drivers/scsi/ipr.c

   1 /*
   2  * ipr.c -- driver for IBM Power Linux RAID adapters
   3  *
   4  * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
   5  *
   6  * Copyright (C) 2003, 2004 IBM Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 /*
  25  * Notes:
  26  *
  27  * This driver is used to control the following SCSI adapters:
  28  *
  29  * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
  30  *
  31  * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
  32  *              PCI-X Dual Channel Ultra 320 SCSI Adapter
  33  *              PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
  34  *              Embedded SCSI adapter on p615 and p655 systems
  35  *
  36  * Supported Hardware Features:
  37  *      - Ultra 320 SCSI controller
  38  *      - PCI-X host interface
  39  *      - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
  40  *      - Non-Volatile Write Cache
  41  *      - Supports attachment of non-RAID disks, tape, and optical devices
  42  *      - RAID Levels 0, 5, 10
  43  *      - Hot spare
  44  *      - Background Parity Checking
  45  *      - Background Data Scrubbing
  46  *      - Ability to increase the capacity of an existing RAID 5 disk array
  47  *              by adding disks
  48  *
  49  * Driver Features:
  50  *      - Tagged command queuing
  51  *      - Adapter microcode download
  52  *      - PCI hot plug
  53  *      - SCSI device hot plug
  54  *
  55  */
  56
  57 #include <linux/fs.h>
  58 #include <linux/init.h>
  59 #include <linux/types.h>
  60 #include <linux/errno.h>
  61 #include <linux/kernel.h>
  62 #include <linux/slab.h>
  63 #include <linux/vmalloc.h>
  64 #include <linux/ioport.h>
  65 #include <linux/delay.h>
  66 #include <linux/pci.h>
  67 #include <linux/wait.h>
  68 #include <linux/spinlock.h>
  69 #include <linux/sched.h>
  70 #include <linux/interrupt.h>
  71 #include <linux/blkdev.h>
  72 #include <linux/firmware.h>
  73 #include <linux/module.h>
  74 #include <linux/moduleparam.h>
  75 #include <linux/libata.h>
  76 #include <linux/hdreg.h>
  77 #include <linux/reboot.h>
  78 #include <linux/stringify.h>
  79 #include <asm/io.h>
  80 #include <asm/irq.h>
  81 #include <asm/processor.h>
  82 #include <scsi/scsi.h>
  83 #include <scsi/scsi_host.h>
  84 #include <scsi/scsi_tcq.h>
  85 #include <scsi/scsi_eh.h>
  86 #include <scsi/scsi_cmnd.h>
  87 #include "ipr.h"
  88
  89 /*
  90  *   Global Data
  91  */
  92 static LIST_HEAD(ipr_ioa_head);
  93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
  94 static unsigned int ipr_max_speed = 1;
  95 static int ipr_testmode = 0;
  96 static unsigned int ipr_fastfail = 0;
  97 static unsigned int ipr_transop_timeout = 0;
  98 static unsigned int ipr_debug = 0;
  99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
 100 static unsigned int ipr_dual_ioa_raid = 1;
 101 static unsigned int ipr_number_of_msix = 16;
 102 static unsigned int ipr_fast_reboot;
 103 static DEFINE_SPINLOCK(ipr_driver_lock);
 104
 105 /* This table describes the differences between DMA controller chips */
 106 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
 107         { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
 108                 .mailbox = 0x0042C,
 109                 .max_cmds = 100,
 110                 .cache_line_size = 0x20,
 111                 .clear_isr = 1,
 112                 .iopoll_weight = 0,
 113                 {
 114                         .set_interrupt_mask_reg = 0x0022C,
 115                         .clr_interrupt_mask_reg = 0x00230,
 116                         .clr_interrupt_mask_reg32 = 0x00230,
 117                         .sense_interrupt_mask_reg = 0x0022C,
 118                         .sense_interrupt_mask_reg32 = 0x0022C,
 119                         .clr_interrupt_reg = 0x00228,
 120                         .clr_interrupt_reg32 = 0x00228,
 121                         .sense_interrupt_reg = 0x00224,
 122                         .sense_interrupt_reg32 = 0x00224,
 123                         .ioarrin_reg = 0x00404,
 124                         .sense_uproc_interrupt_reg = 0x00214,
 125                         .sense_uproc_interrupt_reg32 = 0x00214,
 126                         .set_uproc_interrupt_reg = 0x00214,
 127                         .set_uproc_interrupt_reg32 = 0x00214,
 128                         .clr_uproc_interrupt_reg = 0x00218,
 129                         .clr_uproc_interrupt_reg32 = 0x00218
 130                 }
 131         },
 132         { /* Snipe and Scamp */
 133                 .mailbox = 0x0052C,
 134                 .max_cmds = 100,
 135                 .cache_line_size = 0x20,
 136                 .clear_isr = 1,
 137                 .iopoll_weight = 0,
 138                 {
 139                         .set_interrupt_mask_reg = 0x00288,
 140                         .clr_interrupt_mask_reg = 0x0028C,
 141                         .clr_interrupt_mask_reg32 = 0x0028C,
 142                         .sense_interrupt_mask_reg = 0x00288,
 143                         .sense_interrupt_mask_reg32 = 0x00288,
 144                         .clr_interrupt_reg = 0x00284,
 145                         .clr_interrupt_reg32 = 0x00284,
 146                         .sense_interrupt_reg = 0x00280,
 147                         .sense_interrupt_reg32 = 0x00280,
 148                         .ioarrin_reg = 0x00504,
 149                         .sense_uproc_interrupt_reg = 0x00290,
 150                         .sense_uproc_interrupt_reg32 = 0x00290,
 151                         .set_uproc_interrupt_reg = 0x00290,
 152                         .set_uproc_interrupt_reg32 = 0x00290,
 153                         .clr_uproc_interrupt_reg = 0x00294,
 154                         .clr_uproc_interrupt_reg32 = 0x00294
 155                 }
 156         },
 157         { /* CRoC */
 158                 .mailbox = 0x00044,
 159                 .max_cmds = 1000,
 160                 .cache_line_size = 0x20,
 161                 .clear_isr = 0,
 162                 .iopoll_weight = 64,
 163                 {
 164                         .set_interrupt_mask_reg = 0x00010,
 165                         .clr_interrupt_mask_reg = 0x00018,
 166                         .clr_interrupt_mask_reg32 = 0x0001C,
 167                         .sense_interrupt_mask_reg = 0x00010,
 168                         .sense_interrupt_mask_reg32 = 0x00014,
 169                         .clr_interrupt_reg = 0x00008,
 170                         .clr_interrupt_reg32 = 0x0000C,
 171                         .sense_interrupt_reg = 0x00000,
 172                         .sense_interrupt_reg32 = 0x00004,
 173                         .ioarrin_reg = 0x00070,
 174                         .sense_uproc_interrupt_reg = 0x00020,
 175                         .sense_uproc_interrupt_reg32 = 0x00024,
 176                         .set_uproc_interrupt_reg = 0x00020,
 177                         .set_uproc_interrupt_reg32 = 0x00024,
 178                         .clr_uproc_interrupt_reg = 0x00028,
 179                         .clr_uproc_interrupt_reg32 = 0x0002C,
 180                         .init_feedback_reg = 0x0005C,
 181                         .dump_addr_reg = 0x00064,
 182                         .dump_data_reg = 0x00068,
 183                         .endian_swap_reg = 0x00084
 184                 }
 185         },
 186 };
 187
 188 static const struct ipr_chip_t ipr_chip[] = {
 189         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 190         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 191         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 192         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 193         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 194         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
 195         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
 196         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
 197         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
 198         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
 199 };
 200
 201 static int ipr_max_bus_speeds[] = {
 202         IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
 203 };
 204
 205 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
 206 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
 207 module_param_named(max_speed, ipr_max_speed, uint, 0);
 208 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
 209 module_param_named(log_level, ipr_log_level, uint, 0);
 210 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
 211 module_param_named(testmode, ipr_testmode, int, 0);
 212 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
 213 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
 214 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
 215 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
 216 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
 217 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
 218 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
 219 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
 220 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
 221 module_param_named(max_devs, ipr_max_devs, int, 0);
 222 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
 223                  "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
 224 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
 225 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16).  (default:16)");
 226 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
 227 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
 228 MODULE_LICENSE("GPL");
 229 MODULE_VERSION(IPR_DRIVER_VERSION);
 230
 231 /*  A constant array of IOASCs/URCs/Error Messages */
 232 static const
 233 struct ipr_error_table_t ipr_error_table[] = {
 234         {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
 235         "8155: An unknown error was received"},
 236         {0x00330000, 0, 0,
 237         "Soft underlength error"},
 238         {0x005A0000, 0, 0,
 239         "Command to be cancelled not found"},
 240         {0x00808000, 0, 0,
 241         "Qualified success"},
 242         {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
 243         "FFFE: Soft device bus error recovered by the IOA"},
 244         {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
 245         "4101: Soft device bus fabric error"},
 246         {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
 247         "FFFC: Logical block guard error recovered by the device"},
 248         {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
 249         "FFFC: Logical block reference tag error recovered by the device"},
 250         {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
 251         "4171: Recovered scatter list tag / sequence number error"},
 252         {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
 253         "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
 254         {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
 255         "4171: Recovered logical block sequence number error on IOA to Host transfer"},
 256         {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
 257         "FFFD: Recovered logical block reference tag error detected by the IOA"},
 258         {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
 259         "FFFD: Logical block guard error recovered by the IOA"},
 260         {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
 261         "FFF9: Device sector reassign successful"},
 262         {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
 263         "FFF7: Media error recovered by device rewrite procedures"},
 264         {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
 265         "7001: IOA sector reassignment successful"},
 266         {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
 267         "FFF9: Soft media error. Sector reassignment recommended"},
 268         {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
 269         "FFF7: Media error recovered by IOA rewrite procedures"},
 270         {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
 271         "FF3D: Soft PCI bus error recovered by the IOA"},
 272         {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
 273         "FFF6: Device hardware error recovered by the IOA"},
 274         {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
 275         "FFF6: Device hardware error recovered by the device"},
 276         {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
 277         "FF3D: Soft IOA error recovered by the IOA"},
 278         {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
 279         "FFFA: Undefined device response recovered by the IOA"},
 280         {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
 281         "FFF6: Device bus error, message or command phase"},
 282         {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
 283         "FFFE: Task Management Function failed"},
 284         {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
 285         "FFF6: Failure prediction threshold exceeded"},
 286         {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
 287         "8009: Impending cache battery pack failure"},
 288         {0x02040100, 0, 0,
 289         "Logical Unit in process of becoming ready"},
 290         {0x02040200, 0, 0,
 291         "Initializing command required"},
 292         {0x02040400, 0, 0,
 293         "34FF: Disk device format in progress"},
 294         {0x02040C00, 0, 0,
 295         "Logical unit not accessible, target port in unavailable state"},
 296         {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
 297         "9070: IOA requested reset"},
 298         {0x023F0000, 0, 0,
 299         "Synchronization required"},
 300         {0x02408500, 0, 0,
 301         "IOA microcode download required"},
 302         {0x02408600, 0, 0,
 303         "Device bus connection is prohibited by host"},
 304         {0x024E0000, 0, 0,
 305         "No ready, IOA shutdown"},
 306         {0x025A0000, 0, 0,
 307         "Not ready, IOA has been shutdown"},
 308         {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
 309         "3020: Storage subsystem configuration error"},
 310         {0x03110B00, 0, 0,
 311         "FFF5: Medium error, data unreadable, recommend reassign"},
 312         {0x03110C00, 0, 0,
 313         "7000: Medium error, data unreadable, do not reassign"},
 314         {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
 315         "FFF3: Disk media format bad"},
 316         {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
 317         "3002: Addressed device failed to respond to selection"},
 318         {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
 319         "3100: Device bus error"},
 320         {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
 321         "3109: IOA timed out a device command"},
 322         {0x04088000, 0, 0,
 323         "3120: SCSI bus is not operational"},
 324         {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
 325         "4100: Hard device bus fabric error"},
 326         {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
 327         "310C: Logical block guard error detected by the device"},
 328         {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
 329         "310C: Logical block reference tag error detected by the device"},
 330         {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
 331         "4170: Scatter list tag / sequence number error"},
 332         {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
 333         "8150: Logical block CRC error on IOA to Host transfer"},
 334         {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
 335         "4170: Logical block sequence number error on IOA to Host transfer"},
 336         {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
 337         "310D: Logical block reference tag error detected by the IOA"},
 338         {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
 339         "310D: Logical block guard error detected by the IOA"},
 340         {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
 341         "9000: IOA reserved area data check"},
 342         {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
 343         "9001: IOA reserved area invalid data pattern"},
 344         {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
 345         "9002: IOA reserved area LRC error"},
 346         {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
 347         "Hardware Error, IOA metadata access error"},
 348         {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
 349         "102E: Out of alternate sectors for disk storage"},
 350         {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
 351         "FFF4: Data transfer underlength error"},
 352         {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
 353         "FFF4: Data transfer overlength error"},
 354         {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
 355         "3400: Logical unit failure"},
 356         {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
 357         "FFF4: Device microcode is corrupt"},
 358         {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
 359         "8150: PCI bus error"},
 360         {0x04430000, 1, 0,
 361         "Unsupported device bus message received"},
 362         {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
 363         "FFF4: Disk device problem"},
 364         {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
 365         "8150: Permanent IOA failure"},
 366         {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
 367         "3010: Disk device returned wrong response to IOA"},
 368         {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
 369         "8151: IOA microcode error"},
 370         {0x04448500, 0, 0,
 371         "Device bus status error"},
 372         {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
 373         "8157: IOA error requiring IOA reset to recover"},
 374         {0x04448700, 0, 0,
 375         "ATA device status error"},
 376         {0x04490000, 0, 0,
 377         "Message reject received from the device"},
 378         {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
 379         "8008: A permanent cache battery pack failure occurred"},
 380         {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
 381         "9090: Disk unit has been modified after the last known status"},
 382         {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
 383         "9081: IOA detected device error"},
 384         {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
 385         "9082: IOA detected device error"},
 386         {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
 387         "3110: Device bus error, message or command phase"},
 388         {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
 389         "3110: SAS Command / Task Management Function failed"},
 390         {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
 391         "9091: Incorrect hardware configuration change has been detected"},
 392         {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
 393         "9073: Invalid multi-adapter configuration"},
 394         {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
 395         "4010: Incorrect connection between cascaded expanders"},
 396         {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
 397         "4020: Connections exceed IOA design limits"},
 398         {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
 399         "4030: Incorrect multipath connection"},
 400         {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
 401         "4110: Unsupported enclosure function"},
 402         {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
 403         "4120: SAS cable VPD cannot be read"},
 404         {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
 405         "FFF4: Command to logical unit failed"},
 406         {0x05240000, 1, 0,
 407         "Illegal request, invalid request type or request packet"},
 408         {0x05250000, 0, 0,
 409         "Illegal request, invalid resource handle"},
 410         {0x05258000, 0, 0,
 411         "Illegal request, commands not allowed to this device"},
 412         {0x05258100, 0, 0,
 413         "Illegal request, command not allowed to a secondary adapter"},
 414         {0x05258200, 0, 0,
 415         "Illegal request, command not allowed to a non-optimized resource"},
 416         {0x05260000, 0, 0,
 417         "Illegal request, invalid field in parameter list"},
 418         {0x05260100, 0, 0,
 419         "Illegal request, parameter not supported"},
 420         {0x05260200, 0, 0,
 421         "Illegal request, parameter value invalid"},
 422         {0x052C0000, 0, 0,
 423         "Illegal request, command sequence error"},
 424         {0x052C8000, 1, 0,
 425         "Illegal request, dual adapter support not enabled"},
 426         {0x052C8100, 1, 0,
 427         "Illegal request, another cable connector was physically disabled"},
 428         {0x054E8000, 1, 0,
 429         "Illegal request, inconsistent group id/group count"},
 430         {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
 431         "9031: Array protection temporarily suspended, protection resuming"},
 432         {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
 433         "9040: Array protection temporarily suspended, protection resuming"},
 434         {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
 435         "4080: IOA exceeded maximum operating temperature"},
 436         {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
 437         "4085: Service required"},
 438         {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
 439         "3140: Device bus not ready to ready transition"},
 440         {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
 441         "FFFB: SCSI bus was reset"},
 442         {0x06290500, 0, 0,
 443         "FFFE: SCSI bus transition to single ended"},
 444         {0x06290600, 0, 0,
 445         "FFFE: SCSI bus transition to LVD"},
 446         {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
 447         "FFFB: SCSI bus was reset by another initiator"},
 448         {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
 449         "3029: A device replacement has occurred"},
 450         {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
 451         "4102: Device bus fabric performance degradation"},
 452         {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
 453         "9051: IOA cache data exists for a missing or failed device"},
 454         {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
 455         "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
 456         {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
 457         "9025: Disk unit is not supported at its physical location"},
 458         {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
 459         "3020: IOA detected a SCSI bus configuration error"},
 460         {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
 461         "3150: SCSI bus configuration error"},
 462         {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
 463         "9074: Asymmetric advanced function disk configuration"},
 464         {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
 465         "4040: Incomplete multipath connection between IOA and enclosure"},
 466         {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
 467         "4041: Incomplete multipath connection between enclosure and device"},
 468         {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
 469         "9075: Incomplete multipath connection between IOA and remote IOA"},
 470         {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
 471         "9076: Configuration error, missing remote IOA"},
 472         {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
 473         "4050: Enclosure does not support a required multipath function"},
 474         {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
 475         "4121: Configuration error, required cable is missing"},
 476         {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
 477         "4122: Cable is not plugged into the correct location on remote IOA"},
 478         {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
 479         "4123: Configuration error, invalid cable vital product data"},
 480         {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
 481         "4124: Configuration error, both cable ends are plugged into the same IOA"},
 482         {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
 483         "4070: Logically bad block written on device"},
 484         {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
 485         "9041: Array protection temporarily suspended"},
 486         {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
 487         "9042: Corrupt array parity detected on specified device"},
 488         {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
 489         "9030: Array no longer protected due to missing or failed disk unit"},
 490         {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
 491         "9071: Link operational transition"},
 492         {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
 493         "9072: Link not operational transition"},
 494         {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
 495         "9032: Array exposed but still protected"},
 496         {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
 497         "70DD: Device forced failed by disrupt device command"},
 498         {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
 499         "4061: Multipath redundancy level got better"},
 500         {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
 501         "4060: Multipath redundancy level got worse"},
 502         {0x06808100, 0, IPR_DEFAULT_LOG_LEVEL,
 503         "9083: Device raw mode enabled"},
 504         {0x06808200, 0, IPR_DEFAULT_LOG_LEVEL,
 505         "9084: Device raw mode disabled"},
 506         {0x07270000, 0, 0,
 507         "Failure due to other device"},
 508         {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
 509         "9008: IOA does not support functions expected by devices"},
 510         {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
 511         "9010: Cache data associated with attached devices cannot be found"},
 512         {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
 513         "9011: Cache data belongs to devices other than those attached"},
 514         {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
 515         "9020: Array missing 2 or more devices with only 1 device present"},
 516         {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
 517         "9021: Array missing 2 or more devices with 2 or more devices present"},
 518         {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
 519         "9022: Exposed array is missing a required device"},
 520         {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
 521         "9023: Array member(s) not at required physical locations"},
 522         {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
 523         "9024: Array not functional due to present hardware configuration"},
 524         {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
 525         "9026: Array not functional due to present hardware configuration"},
 526         {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
 527         "9027: Array is missing a device and parity is out of sync"},
 528         {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
 529         "9028: Maximum number of arrays already exist"},
 530         {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
 531         "9050: Required cache data cannot be located for a disk unit"},
 532         {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
 533         "9052: Cache data exists for a device that has been modified"},
 534         {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
 535         "9054: IOA resources not available due to previous problems"},
 536         {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
 537         "9092: Disk unit requires initialization before use"},
 538         {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
 539         "9029: Incorrect hardware configuration change has been detected"},
 540         {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
 541         "9060: One or more disk pairs are missing from an array"},
 542         {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
 543         "9061: One or more disks are missing from an array"},
 544         {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
 545         "9062: One or more disks are missing from an array"},
 546         {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
 547         "9063: Maximum number of functional arrays has been exceeded"},
 548         {0x07279A00, 0, 0,
 549         "Data protect, other volume set problem"},
 550         {0x0B260000, 0, 0,
 551         "Aborted command, invalid descriptor"},
 552         {0x0B3F9000, 0, 0,
 553         "Target operating conditions have changed, dual adapter takeover"},
 554         {0x0B530200, 0, 0,
 555         "Aborted command, medium removal prevented"},
 556         {0x0B5A0000, 0, 0,
 557         "Command terminated by host"},
 558         {0x0B5B8000, 0, 0,
 559         "Aborted command, command terminated by host"}
 560 };
 561
 562 static const struct ipr_ses_table_entry ipr_ses_table[] = {
 563         { "2104-DL1        ", "XXXXXXXXXXXXXXXX", 80 },
 564         { "2104-TL1        ", "XXXXXXXXXXXXXXXX", 80 },
 565         { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
 566         { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
 567         { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
 568         { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
 569         { "2104-DU3        ", "XXXXXXXXXXXXXXXX", 160 },
 570         { "2104-TU3        ", "XXXXXXXXXXXXXXXX", 160 },
 571         { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
 572         { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
 573         { "St  V1S2        ", "XXXXXXXXXXXXXXXX", 160 },
 574         { "HSBPD4M  PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
 575         { "VSBPD1H   U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
 576 };
 577
 578 /*
 579  *  Function Prototypes
 580  */
 581 static int ipr_reset_alert(struct ipr_cmnd *);
 582 static void ipr_process_ccn(struct ipr_cmnd *);
 583 static void ipr_process_error(struct ipr_cmnd *);
 584 static void ipr_reset_ioa_job(struct ipr_cmnd *);
 585 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
 586                                    enum ipr_shutdown_type);
 587
 588 #ifdef CONFIG_SCSI_IPR_TRACE
 589 /**
 590  * ipr_trc_hook - Add a trace entry to the driver trace
 591  * @ipr_cmd:    ipr command struct
 592  * @type:               trace type
 593  * @add_data:   additional data
 594  *
 595  * Return value:
 596  *      none
 597  **/
 598 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
 599                          u8 type, u32 add_data)
 600 {
 601         struct ipr_trace_entry *trace_entry;
 602         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 603         unsigned int trace_index;
 604
 605         trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
 606         trace_entry = &ioa_cfg->trace[trace_index];
 607         trace_entry->time = jiffies;
 608         trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
 609         trace_entry->type = type;
 610         if (ipr_cmd->ioa_cfg->sis64)
 611                 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
 612         else
 613                 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
 614         trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
 615         trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
 616         trace_entry->u.add_data = add_data;
 617         wmb();
 618 }
 619 #else
 620 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
 621 #endif
 622
 623 /**
 624  * ipr_lock_and_done - Acquire lock and complete command
 625  * @ipr_cmd:    ipr command struct
 626  *
 627  * Return value:
 628  *      none
 629  **/
 630 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
 631 {
 632         unsigned long lock_flags;
 633         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 634
 635         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
 636         ipr_cmd->done(ipr_cmd);
 637         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
 638 }
 639
 640 /**
 641  * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
 642  * @ipr_cmd:    ipr command struct
 643  *
 644  * Return value:
 645  *      none
 646  **/
 647 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
 648 {
 649         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
 650         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
 651         struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
 652         dma_addr_t dma_addr = ipr_cmd->dma_addr;
 653         int hrrq_id;
 654
 655         hrrq_id = ioarcb->cmd_pkt.hrrq_id;
 656         memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
 657         ioarcb->cmd_pkt.hrrq_id = hrrq_id;
 658         ioarcb->data_transfer_length = 0;
 659         ioarcb->read_data_transfer_length = 0;
 660         ioarcb->ioadl_len = 0;
 661         ioarcb->read_ioadl_len = 0;
 662
 663         if (ipr_cmd->ioa_cfg->sis64) {
 664                 ioarcb->u.sis64_addr_data.data_ioadl_addr =
 665                         cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
 666                 ioasa64->u.gata.status = 0;
 667         } else {
 668                 ioarcb->write_ioadl_addr =
 669                         cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
 670                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
 671                 ioasa->u.gata.status = 0;
 672         }
 673
 674         ioasa->hdr.ioasc = 0;
 675         ioasa->hdr.residual_data_len = 0;
 676         ipr_cmd->scsi_cmd = NULL;
 677         ipr_cmd->qc = NULL;
 678         ipr_cmd->sense_buffer[0] = 0;
 679         ipr_cmd->dma_use_sg = 0;
 680 }
 681
 682 /**
 683  * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
 684  * @ipr_cmd:    ipr command struct
 685  *
 686  * Return value:
 687  *      none
 688  **/
 689 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
 690                               void (*fast_done) (struct ipr_cmnd *))
 691 {
 692         ipr_reinit_ipr_cmnd(ipr_cmd);
 693         ipr_cmd->u.scratch = 0;
 694         ipr_cmd->sibling = NULL;
 695         ipr_cmd->eh_comp = NULL;
 696         ipr_cmd->fast_done = fast_done;
 697         init_timer(&ipr_cmd->timer);
 698 }
 699
 700 /**
 701  * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
 702  * @ioa_cfg:    ioa config struct
 703  *
 704  * Return value:
 705  *      pointer to ipr command struct
 706  **/
 707 static
 708 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
 709 {
 710         struct ipr_cmnd *ipr_cmd = NULL;
 711
 712         if (likely(!list_empty(&hrrq->hrrq_free_q))) {
 713                 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
 714                         struct ipr_cmnd, queue);
 715                 list_del(&ipr_cmd->queue);
 716         }
 717
 718
 719         return ipr_cmd;
 720 }
 721
 722 /**
 723  * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
 724  * @ioa_cfg:    ioa config struct
 725  *
 726  * Return value:
 727  *      pointer to ipr command struct
 728  **/
 729 static
 730 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
 731 {
 732         struct ipr_cmnd *ipr_cmd =
 733                 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
 734         ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
 735         return ipr_cmd;
 736 }
 737
 738 /**
 739  * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
 740  * @ioa_cfg:    ioa config struct
 741  * @clr_ints:     interrupts to clear
 742  *
 743  * This function masks all interrupts on the adapter, then clears the
 744  * interrupts specified in the mask
 745  *
 746  * Return value:
 747  *      none
 748  **/
 749 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
 750                                           u32 clr_ints)
 751 {
 752         volatile u32 int_reg;
 753         int i;
 754
 755         /* Stop new interrupts */
 756         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
 757                 spin_lock(&ioa_cfg->hrrq[i]._lock);
 758                 ioa_cfg->hrrq[i].allow_interrupts = 0;
 759                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
 760         }
 761         wmb();
 762
 763         /* Set interrupt mask to stop all new interrupts */
 764         if (ioa_cfg->sis64)
 765                 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
 766         else
 767                 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
 768
 769         /* Clear any pending interrupts */
 770         if (ioa_cfg->sis64)
 771                 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
 772         writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
 773         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
 774 }
 775
 776 /**
 777  * ipr_save_pcix_cmd_reg - Save PCI-X command register
 778  * @ioa_cfg:    ioa config struct
 779  *
 780  * Return value:
 781  *      0 on success / -EIO on failure
 782  **/
 783 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
 784 {
 785         int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
 786
 787         if (pcix_cmd_reg == 0)
 788                 return 0;
 789
 790         if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
 791                                  &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
 792                 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
 793                 return -EIO;
 794         }
 795
 796         ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
 797         return 0;
 798 }
 799
 800 /**
 801  * ipr_set_pcix_cmd_reg - Setup PCI-X command register
 802  * @ioa_cfg:    ioa config struct
 803  *
 804  * Return value:
 805  *      0 on success / -EIO on failure
 806  **/
 807 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
 808 {
 809         int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
 810
 811         if (pcix_cmd_reg) {
 812                 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
 813                                           ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
 814                         dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
 815                         return -EIO;
 816                 }
 817         }
 818
 819         return 0;
 820 }
 821
 822 /**
 823  * ipr_sata_eh_done - done function for aborted SATA commands
 824  * @ipr_cmd:    ipr command struct
 825  *
 826  * This function is invoked for ops generated to SATA
 827  * devices which are being aborted.
 828  *
 829  * Return value:
 830  *      none
 831  **/
 832 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
 833 {
 834         struct ata_queued_cmd *qc = ipr_cmd->qc;
 835         struct ipr_sata_port *sata_port = qc->ap->private_data;
 836
 837         qc->err_mask |= AC_ERR_OTHER;
 838         sata_port->ioasa.status |= ATA_BUSY;
 839         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 840         ata_qc_complete(qc);
 841 }
 842
 843 /**
 844  * ipr_scsi_eh_done - mid-layer done function for aborted ops
 845  * @ipr_cmd:    ipr command struct
 846  *
 847  * This function is invoked by the interrupt handler for
 848  * ops generated by the SCSI mid-layer which are being aborted.
 849  *
 850  * Return value:
 851  *      none
 852  **/
 853 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
 854 {
 855         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
 856
 857         scsi_cmd->result |= (DID_ERROR << 16);
 858
 859         scsi_dma_unmap(ipr_cmd->scsi_cmd);
 860         scsi_cmd->scsi_done(scsi_cmd);
 861         if (ipr_cmd->eh_comp)
 862                 complete(ipr_cmd->eh_comp);
 863         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 864 }
 865
 866 /**
 867  * ipr_fail_all_ops - Fails all outstanding ops.
 868  * @ioa_cfg:    ioa config struct
 869  *
 870  * This function fails all outstanding ops.
 871  *
 872  * Return value:
 873  *      none
 874  **/
 875 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
 876 {
 877         struct ipr_cmnd *ipr_cmd, *temp;
 878         struct ipr_hrr_queue *hrrq;
 879
 880         ENTER;
 881         for_each_hrrq(hrrq, ioa_cfg) {
 882                 spin_lock(&hrrq->_lock);
 883                 list_for_each_entry_safe(ipr_cmd,
 884                                         temp, &hrrq->hrrq_pending_q, queue) {
 885                         list_del(&ipr_cmd->queue);
 886
 887                         ipr_cmd->s.ioasa.hdr.ioasc =
 888                                 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
 889                         ipr_cmd->s.ioasa.hdr.ilid =
 890                                 cpu_to_be32(IPR_DRIVER_ILID);
 891
 892                         if (ipr_cmd->scsi_cmd)
 893                                 ipr_cmd->done = ipr_scsi_eh_done;
 894                         else if (ipr_cmd->qc)
 895                                 ipr_cmd->done = ipr_sata_eh_done;
 896
 897                         ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
 898                                      IPR_IOASC_IOA_WAS_RESET);
 899                         del_timer(&ipr_cmd->timer);
 900                         ipr_cmd->done(ipr_cmd);
 901                 }
 902                 spin_unlock(&hrrq->_lock);
 903         }
 904         LEAVE;
 905 }
 906
 907 /**
 908  * ipr_send_command -  Send driver initiated requests.
 909  * @ipr_cmd:            ipr command struct
 910  *
 911  * This function sends a command to the adapter using the correct write call.
 912  * In the case of sis64, calculate the ioarcb size required. Then or in the
 913  * appropriate bits.
 914  *
 915  * Return value:
 916  *      none
 917  **/
 918 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
 919 {
 920         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 921         dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
 922
 923         if (ioa_cfg->sis64) {
 924                 /* The default size is 256 bytes */
 925                 send_dma_addr |= 0x1;
 926
 927                 /* If the number of ioadls * size of ioadl > 128 bytes,
 928                    then use a 512 byte ioarcb */
 929                 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
 930                         send_dma_addr |= 0x4;
 931                 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
 932         } else
 933                 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
 934 }
 935
 936 /**
 937  * ipr_do_req -  Send driver initiated requests.
 938  * @ipr_cmd:            ipr command struct
 939  * @done:                       done function
 940  * @timeout_func:       timeout function
 941  * @timeout:            timeout value
 942  *
 943  * This function sends the specified command to the adapter with the
 944  * timeout given. The done function is invoked on command completion.
 945  *
 946  * Return value:
 947  *      none
 948  **/
 949 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
 950                        void (*done) (struct ipr_cmnd *),
 951                        void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
 952 {
 953         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
 954
 955         ipr_cmd->done = done;
 956
 957         ipr_cmd->timer.data = (unsigned long) ipr_cmd;
 958         ipr_cmd->timer.expires = jiffies + timeout;
 959         ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
 960
 961         add_timer(&ipr_cmd->timer);
 962
 963         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
 964
 965         ipr_send_command(ipr_cmd);
 966 }
 967
 968 /**
 969  * ipr_internal_cmd_done - Op done function for an internally generated op.
 970  * @ipr_cmd:    ipr command struct
 971  *
 972  * This function is the op done function for an internally generated,
 973  * blocking op. It simply wakes the sleeping thread.
 974  *
 975  * Return value:
 976  *      none
 977  **/
 978 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
 979 {
 980         if (ipr_cmd->sibling)
 981                 ipr_cmd->sibling = NULL;
 982         else
 983                 complete(&ipr_cmd->completion);
 984 }
 985
 986 /**
 987  * ipr_init_ioadl - initialize the ioadl for the correct SIS type
 988  * @ipr_cmd:    ipr command struct
 989  * @dma_addr:   dma address
 990  * @len:        transfer length
 991  * @flags:      ioadl flag value
 992  *
 993  * This function initializes an ioadl in the case where there is only a single
 994  * descriptor.
 995  *
 996  * Return value:
 997  *      nothing
 998  **/
 999 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
1000                            u32 len, int flags)
1001 {
1002         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1003         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
1004
1005         ipr_cmd->dma_use_sg = 1;
1006
1007         if (ipr_cmd->ioa_cfg->sis64) {
1008                 ioadl64->flags = cpu_to_be32(flags);
1009                 ioadl64->data_len = cpu_to_be32(len);
1010                 ioadl64->address = cpu_to_be64(dma_addr);
1011
1012                 ipr_cmd->ioarcb.ioadl_len =
1013                         cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1014                 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1015         } else {
1016                 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1017                 ioadl->address = cpu_to_be32(dma_addr);
1018
1019                 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1020                         ipr_cmd->ioarcb.read_ioadl_len =
1021                                 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1022                         ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1023                 } else {
1024                         ipr_cmd->ioarcb.ioadl_len =
1025                                 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1026                         ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1027                 }
1028         }
1029 }
1030
1031 /**
1032  * ipr_send_blocking_cmd - Send command and sleep on its completion.
1033  * @ipr_cmd:    ipr command struct
1034  * @timeout_func:       function to invoke if command times out
1035  * @timeout:    timeout
1036  *
1037  * Return value:
1038  *      none
1039  **/
1040 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1041                                   void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
1042                                   u32 timeout)
1043 {
1044         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1045
1046         init_completion(&ipr_cmd->completion);
1047         ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1048
1049         spin_unlock_irq(ioa_cfg->host->host_lock);
1050         wait_for_completion(&ipr_cmd->completion);
1051         spin_lock_irq(ioa_cfg->host->host_lock);
1052 }
1053
1054 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1055 {
1056         unsigned int hrrq;
1057
1058         if (ioa_cfg->hrrq_num == 1)
1059                 hrrq = 0;
1060         else {
1061                 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1062                 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1063         }
1064         return hrrq;
1065 }
1066
1067 /**
1068  * ipr_send_hcam - Send an HCAM to the adapter.
1069  * @ioa_cfg:    ioa config struct
1070  * @type:               HCAM type
1071  * @hostrcb:    hostrcb struct
1072  *
1073  * This function will send a Host Controlled Async command to the adapter.
1074  * If HCAMs are currently not allowed to be issued to the adapter, it will
1075  * place the hostrcb on the free queue.
1076  *
1077  * Return value:
1078  *      none
1079  **/
1080 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1081                           struct ipr_hostrcb *hostrcb)
1082 {
1083         struct ipr_cmnd *ipr_cmd;
1084         struct ipr_ioarcb *ioarcb;
1085
1086         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1087                 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1088                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1089                 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1090
1091                 ipr_cmd->u.hostrcb = hostrcb;
1092                 ioarcb = &ipr_cmd->ioarcb;
1093
1094                 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1095                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1096                 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1097                 ioarcb->cmd_pkt.cdb[1] = type;
1098                 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1099                 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1100
1101                 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1102                                sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1103
1104                 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1105                         ipr_cmd->done = ipr_process_ccn;
1106                 else
1107                         ipr_cmd->done = ipr_process_error;
1108
1109                 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1110
1111                 ipr_send_command(ipr_cmd);
1112         } else {
1113                 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1114         }
1115 }
1116
1117 /**
1118  * ipr_update_ata_class - Update the ata class in the resource entry
1119  * @res:        resource entry struct
1120  * @proto:      cfgte device bus protocol value
1121  *
1122  * Return value:
1123  *      none
1124  **/
1125 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1126 {
1127         switch (proto) {
1128         case IPR_PROTO_SATA:
1129         case IPR_PROTO_SAS_STP:
1130                 res->ata_class = ATA_DEV_ATA;
1131                 break;
1132         case IPR_PROTO_SATA_ATAPI:
1133         case IPR_PROTO_SAS_STP_ATAPI:
1134                 res->ata_class = ATA_DEV_ATAPI;
1135                 break;
1136         default:
1137                 res->ata_class = ATA_DEV_UNKNOWN;
1138                 break;
1139         };
1140 }
1141
1142 /**
1143  * ipr_init_res_entry - Initialize a resource entry struct.
1144  * @res:        resource entry struct
1145  * @cfgtew:     config table entry wrapper struct
1146  *
1147  * Return value:
1148  *      none
1149  **/
1150 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1151                                struct ipr_config_table_entry_wrapper *cfgtew)
1152 {
1153         int found = 0;
1154         unsigned int proto;
1155         struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1156         struct ipr_resource_entry *gscsi_res = NULL;
1157
1158         res->needs_sync_complete = 0;
1159         res->in_erp = 0;
1160         res->add_to_ml = 0;
1161         res->del_from_ml = 0;
1162         res->resetting_device = 0;
1163         res->reset_occurred = 0;
1164         res->sdev = NULL;
1165         res->sata_port = NULL;
1166
1167         if (ioa_cfg->sis64) {
1168                 proto = cfgtew->u.cfgte64->proto;
1169                 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1170                 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1171                 res->qmodel = IPR_QUEUEING_MODEL64(res);
1172                 res->type = cfgtew->u.cfgte64->res_type;
1173
1174                 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1175                         sizeof(res->res_path));
1176
1177                 res->bus = 0;
1178                 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1179                         sizeof(res->dev_lun.scsi_lun));
1180                 res->lun = scsilun_to_int(&res->dev_lun);
1181
1182                 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1183                         list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1184                                 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1185                                         found = 1;
1186                                         res->target = gscsi_res->target;
1187                                         break;
1188                                 }
1189                         }
1190                         if (!found) {
1191                                 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1192                                                                   ioa_cfg->max_devs_supported);
1193                                 set_bit(res->target, ioa_cfg->target_ids);
1194                         }
1195                 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1196                         res->bus = IPR_IOAFP_VIRTUAL_BUS;
1197                         res->target = 0;
1198                 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1199                         res->bus = IPR_ARRAY_VIRTUAL_BUS;
1200                         res->target = find_first_zero_bit(ioa_cfg->array_ids,
1201                                                           ioa_cfg->max_devs_supported);
1202                         set_bit(res->target, ioa_cfg->array_ids);
1203                 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1204                         res->bus = IPR_VSET_VIRTUAL_BUS;
1205                         res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1206                                                           ioa_cfg->max_devs_supported);
1207                         set_bit(res->target, ioa_cfg->vset_ids);
1208                 } else {
1209                         res->target = find_first_zero_bit(ioa_cfg->target_ids,
1210                                                           ioa_cfg->max_devs_supported);
1211                         set_bit(res->target, ioa_cfg->target_ids);
1212                 }
1213         } else {
1214                 proto = cfgtew->u.cfgte->proto;
1215                 res->qmodel = IPR_QUEUEING_MODEL(res);
1216                 res->flags = cfgtew->u.cfgte->flags;
1217                 if (res->flags & IPR_IS_IOA_RESOURCE)
1218                         res->type = IPR_RES_TYPE_IOAFP;
1219                 else
1220                         res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1221
1222                 res->bus = cfgtew->u.cfgte->res_addr.bus;
1223                 res->target = cfgtew->u.cfgte->res_addr.target;
1224                 res->lun = cfgtew->u.cfgte->res_addr.lun;
1225                 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1226         }
1227
1228         ipr_update_ata_class(res, proto);
1229 }
1230
1231 /**
1232  * ipr_is_same_device - Determine if two devices are the same.
1233  * @res:        resource entry struct
1234  * @cfgtew:     config table entry wrapper struct
1235  *
1236  * Return value:
1237  *      1 if the devices are the same / 0 otherwise
1238  **/
1239 static int ipr_is_same_device(struct ipr_resource_entry *res,
1240                               struct ipr_config_table_entry_wrapper *cfgtew)
1241 {
1242         if (res->ioa_cfg->sis64) {
1243                 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1244                                         sizeof(cfgtew->u.cfgte64->dev_id)) &&
1245                         !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1246                                         sizeof(cfgtew->u.cfgte64->lun))) {
1247                         return 1;
1248                 }
1249         } else {
1250                 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1251                     res->target == cfgtew->u.cfgte->res_addr.target &&
1252                     res->lun == cfgtew->u.cfgte->res_addr.lun)
1253                         return 1;
1254         }
1255
1256         return 0;
1257 }
1258
1259 /**
1260  * __ipr_format_res_path - Format the resource path for printing.
1261  * @res_path:   resource path
1262  * @buf:        buffer
1263  * @len:        length of buffer provided
1264  *
1265  * Return value:
1266  *      pointer to buffer
1267  **/
1268 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1269 {
1270         int i;
1271         char *p = buffer;
1272
1273         *p = '\0';
1274         p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1275         for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1276                 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1277
1278         return buffer;
1279 }
1280
1281 /**
1282  * ipr_format_res_path - Format the resource path for printing.
1283  * @ioa_cfg:    ioa config struct
1284  * @res_path:   resource path
1285  * @buf:        buffer
1286  * @len:        length of buffer provided
1287  *
1288  * Return value:
1289  *      pointer to buffer
1290  **/
1291 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1292                                  u8 *res_path, char *buffer, int len)
1293 {
1294         char *p = buffer;
1295
1296         *p = '\0';
1297         p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1298         __ipr_format_res_path(res_path, p, len - (buffer - p));
1299         return buffer;
1300 }
1301
1302 /**
1303  * ipr_update_res_entry - Update the resource entry.
1304  * @res:        resource entry struct
1305  * @cfgtew:     config table entry wrapper struct
1306  *
1307  * Return value:
1308  *      none
1309  **/
1310 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1311                                  struct ipr_config_table_entry_wrapper *cfgtew)
1312 {
1313         char buffer[IPR_MAX_RES_PATH_LENGTH];
1314         unsigned int proto;
1315         int new_path = 0;
1316
1317         if (res->ioa_cfg->sis64) {
1318                 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1319                 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1320                 res->type = cfgtew->u.cfgte64->res_type;
1321
1322                 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1323                         sizeof(struct ipr_std_inq_data));
1324
1325                 res->qmodel = IPR_QUEUEING_MODEL64(res);
1326                 proto = cfgtew->u.cfgte64->proto;
1327                 res->res_handle = cfgtew->u.cfgte64->res_handle;
1328                 res->dev_id = cfgtew->u.cfgte64->dev_id;
1329
1330                 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1331                         sizeof(res->dev_lun.scsi_lun));
1332
1333                 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1334                                         sizeof(res->res_path))) {
1335                         memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1336                                 sizeof(res->res_path));
1337                         new_path = 1;
1338                 }
1339
1340                 if (res->sdev && new_path)
1341                         sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1342                                     ipr_format_res_path(res->ioa_cfg,
1343                                         res->res_path, buffer, sizeof(buffer)));
1344         } else {
1345                 res->flags = cfgtew->u.cfgte->flags;
1346                 if (res->flags & IPR_IS_IOA_RESOURCE)
1347                         res->type = IPR_RES_TYPE_IOAFP;
1348                 else
1349                         res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1350
1351                 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1352                         sizeof(struct ipr_std_inq_data));
1353
1354                 res->qmodel = IPR_QUEUEING_MODEL(res);
1355                 proto = cfgtew->u.cfgte->proto;
1356                 res->res_handle = cfgtew->u.cfgte->res_handle;
1357         }
1358
1359         ipr_update_ata_class(res, proto);
1360 }
1361
1362 /**
1363  * ipr_clear_res_target - Clear the bit in the bit map representing the target
1364  *                        for the resource.
1365  * @res:        resource entry struct
1366  * @cfgtew:     config table entry wrapper struct
1367  *
1368  * Return value:
1369  *      none
1370  **/
1371 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1372 {
1373         struct ipr_resource_entry *gscsi_res = NULL;
1374         struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1375
1376         if (!ioa_cfg->sis64)
1377                 return;
1378
1379         if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1380                 clear_bit(res->target, ioa_cfg->array_ids);
1381         else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1382                 clear_bit(res->target, ioa_cfg->vset_ids);
1383         else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1384                 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1385                         if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1386                                 return;
1387                 clear_bit(res->target, ioa_cfg->target_ids);
1388
1389         } else if (res->bus == 0)
1390                 clear_bit(res->target, ioa_cfg->target_ids);
1391 }
1392
1393 /**
1394  * ipr_handle_config_change - Handle a config change from the adapter
1395  * @ioa_cfg:    ioa config struct
1396  * @hostrcb:    hostrcb
1397  *
1398  * Return value:
1399  *      none
1400  **/
1401 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1402                                      struct ipr_hostrcb *hostrcb)
1403 {
1404         struct ipr_resource_entry *res = NULL;
1405         struct ipr_config_table_entry_wrapper cfgtew;
1406         __be32 cc_res_handle;
1407
1408         u32 is_ndn = 1;
1409
1410         if (ioa_cfg->sis64) {
1411                 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1412                 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1413         } else {
1414                 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1415                 cc_res_handle = cfgtew.u.cfgte->res_handle;
1416         }
1417
1418         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1419                 if (res->res_handle == cc_res_handle) {
1420                         is_ndn = 0;
1421                         break;
1422                 }
1423         }
1424
1425         if (is_ndn) {
1426                 if (list_empty(&ioa_cfg->free_res_q)) {
1427                         ipr_send_hcam(ioa_cfg,
1428                                       IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1429                                       hostrcb);
1430                         return;
1431                 }
1432
1433                 res = list_entry(ioa_cfg->free_res_q.next,
1434                                  struct ipr_resource_entry, queue);
1435
1436                 list_del(&res->queue);
1437                 ipr_init_res_entry(res, &cfgtew);
1438                 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1439         }
1440
1441         ipr_update_res_entry(res, &cfgtew);
1442
1443         if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1444                 if (res->sdev) {
1445                         res->del_from_ml = 1;
1446                         res->res_handle = IPR_INVALID_RES_HANDLE;
1447                         schedule_work(&ioa_cfg->work_q);
1448                 } else {
1449                         ipr_clear_res_target(res);
1450                         list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1451                 }
1452         } else if (!res->sdev || res->del_from_ml) {
1453                 res->add_to_ml = 1;
1454                 schedule_work(&ioa_cfg->work_q);
1455         }
1456
1457         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1458 }
1459
1460 /**
1461  * ipr_process_ccn - Op done function for a CCN.
1462  * @ipr_cmd:    ipr command struct
1463  *
1464  * This function is the op done function for a configuration
1465  * change notification host controlled async from the adapter.
1466  *
1467  * Return value:
1468  *      none
1469  **/
1470 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1471 {
1472         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1473         struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1474         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1475
1476         list_del(&hostrcb->queue);
1477         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1478
1479         if (ioasc) {
1480                 if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1481                     ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1482                         dev_err(&ioa_cfg->pdev->dev,
1483                                 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1484
1485                 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1486         } else {
1487                 ipr_handle_config_change(ioa_cfg, hostrcb);
1488         }
1489 }
1490
1491 /**
1492  * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1493  * @i:          index into buffer
1494  * @buf:                string to modify
1495  *
1496  * This function will strip all trailing whitespace, pad the end
1497  * of the string with a single space, and NULL terminate the string.
1498  *
1499  * Return value:
1500  *      new length of string
1501  **/
1502 static int strip_and_pad_whitespace(int i, char *buf)
1503 {
1504         while (i && buf[i] == ' ')
1505                 i--;
1506         buf[i+1] = ' ';
1507         buf[i+2] = '\0';
1508         return i + 2;
1509 }
1510
1511 /**
1512  * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1513  * @prefix:             string to print at start of printk
1514  * @hostrcb:    hostrcb pointer
1515  * @vpd:                vendor/product id/sn struct
1516  *
1517  * Return value:
1518  *      none
1519  **/
1520 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1521                                 struct ipr_vpd *vpd)
1522 {
1523         char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1524         int i = 0;
1525
1526         memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1527         i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1528
1529         memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1530         i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1531
1532         memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1533         buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1534
1535         ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1536 }
1537
1538 /**
1539  * ipr_log_vpd - Log the passed VPD to the error log.
1540  * @vpd:                vendor/product id/sn struct
1541  *
1542  * Return value:
1543  *      none
1544  **/
1545 static void ipr_log_vpd(struct ipr_vpd *vpd)
1546 {
1547         char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1548                     + IPR_SERIAL_NUM_LEN];
1549
1550         memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1551         memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1552                IPR_PROD_ID_LEN);
1553         buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1554         ipr_err("Vendor/Product ID: %s\n", buffer);
1555
1556         memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1557         buffer[IPR_SERIAL_NUM_LEN] = '\0';
1558         ipr_err("    Serial Number: %s\n", buffer);
1559 }
1560
1561 /**
1562  * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1563  * @prefix:             string to print at start of printk
1564  * @hostrcb:    hostrcb pointer
1565  * @vpd:                vendor/product id/sn/wwn struct
1566  *
1567  * Return value:
1568  *      none
1569  **/
1570 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1571                                     struct ipr_ext_vpd *vpd)
1572 {
1573         ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1574         ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1575                      be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1576 }
1577
1578 /**
1579  * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1580  * @vpd:                vendor/product id/sn/wwn struct
1581  *
1582  * Return value:
1583  *      none
1584  **/
1585 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1586 {
1587         ipr_log_vpd(&vpd->vpd);
1588         ipr_err("    WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1589                 be32_to_cpu(vpd->wwid[1]));
1590 }
1591
1592 /**
1593  * ipr_log_enhanced_cache_error - Log a cache error.
1594  * @ioa_cfg:    ioa config struct
1595  * @hostrcb:    hostrcb struct
1596  *
1597  * Return value:
1598  *      none
1599  **/
1600 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1601                                          struct ipr_hostrcb *hostrcb)
1602 {
1603         struct ipr_hostrcb_type_12_error *error;
1604
1605         if (ioa_cfg->sis64)
1606                 error = &hostrcb->hcam.u.error64.u.type_12_error;
1607         else
1608                 error = &hostrcb->hcam.u.error.u.type_12_error;
1609
1610         ipr_err("-----Current Configuration-----\n");
1611         ipr_err("Cache Directory Card Information:\n");
1612         ipr_log_ext_vpd(&error->ioa_vpd);
1613         ipr_err("Adapter Card Information:\n");
1614         ipr_log_ext_vpd(&error->cfc_vpd);
1615
1616         ipr_err("-----Expected Configuration-----\n");
1617         ipr_err("Cache Directory Card Information:\n");
1618         ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1619         ipr_err("Adapter Card Information:\n");
1620         ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1621
1622         ipr_err("Additional IOA Data: %08X %08X %08X\n",
1623                      be32_to_cpu(error->ioa_data[0]),
1624                      be32_to_cpu(error->ioa_data[1]),
1625                      be32_to_cpu(error->ioa_data[2]));
1626 }
1627
1628 /**
1629  * ipr_log_cache_error - Log a cache error.
1630  * @ioa_cfg:    ioa config struct
1631  * @hostrcb:    hostrcb struct
1632  *
1633  * Return value:
1634  *      none
1635  **/
1636 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1637                                 struct ipr_hostrcb *hostrcb)
1638 {
1639         struct ipr_hostrcb_type_02_error *error =
1640                 &hostrcb->hcam.u.error.u.type_02_error;
1641
1642         ipr_err("-----Current Configuration-----\n");
1643         ipr_err("Cache Directory Card Information:\n");
1644         ipr_log_vpd(&error->ioa_vpd);
1645         ipr_err("Adapter Card Information:\n");
1646         ipr_log_vpd(&error->cfc_vpd);
1647
1648         ipr_err("-----Expected Configuration-----\n");
1649         ipr_err("Cache Directory Card Information:\n");
1650         ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1651         ipr_err("Adapter Card Information:\n");
1652         ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1653
1654         ipr_err("Additional IOA Data: %08X %08X %08X\n",
1655                      be32_to_cpu(error->ioa_data[0]),
1656                      be32_to_cpu(error->ioa_data[1]),
1657                      be32_to_cpu(error->ioa_data[2]));
1658 }
1659
1660 /**
1661  * ipr_log_enhanced_config_error - Log a configuration error.
1662  * @ioa_cfg:    ioa config struct
1663  * @hostrcb:    hostrcb struct
1664  *
1665  * Return value:
1666  *      none
1667  **/
1668 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1669                                           struct ipr_hostrcb *hostrcb)
1670 {
1671         int errors_logged, i;
1672         struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1673         struct ipr_hostrcb_type_13_error *error;
1674
1675         error = &hostrcb->hcam.u.error.u.type_13_error;
1676         errors_logged = be32_to_cpu(error->errors_logged);
1677
1678         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1679                 be32_to_cpu(error->errors_detected), errors_logged);
1680
1681         dev_entry = error->dev;
1682
1683         for (i = 0; i < errors_logged; i++, dev_entry++) {
1684                 ipr_err_separator;
1685
1686                 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1687                 ipr_log_ext_vpd(&dev_entry->vpd);
1688
1689                 ipr_err("-----New Device Information-----\n");
1690                 ipr_log_ext_vpd(&dev_entry->new_vpd);
1691
1692                 ipr_err("Cache Directory Card Information:\n");
1693                 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1694
1695                 ipr_err("Adapter Card Information:\n");
1696                 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1697         }
1698 }
1699
1700 /**
1701  * ipr_log_sis64_config_error - Log a device error.
1702  * @ioa_cfg:    ioa config struct
1703  * @hostrcb:    hostrcb struct
1704  *
1705  * Return value:
1706  *      none
1707  **/
1708 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1709                                        struct ipr_hostrcb *hostrcb)
1710 {
1711         int errors_logged, i;
1712         struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1713         struct ipr_hostrcb_type_23_error *error;
1714         char buffer[IPR_MAX_RES_PATH_LENGTH];
1715
1716         error = &hostrcb->hcam.u.error64.u.type_23_error;
1717         errors_logged = be32_to_cpu(error->errors_logged);
1718
1719         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1720                 be32_to_cpu(error->errors_detected), errors_logged);
1721
1722         dev_entry = error->dev;
1723
1724         for (i = 0; i < errors_logged; i++, dev_entry++) {
1725                 ipr_err_separator;
1726
1727                 ipr_err("Device %d : %s", i + 1,
1728                         __ipr_format_res_path(dev_entry->res_path,
1729                                               buffer, sizeof(buffer)));
1730                 ipr_log_ext_vpd(&dev_entry->vpd);
1731
1732                 ipr_err("-----New Device Information-----\n");
1733                 ipr_log_ext_vpd(&dev_entry->new_vpd);
1734
1735                 ipr_err("Cache Directory Card Information:\n");
1736                 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1737
1738                 ipr_err("Adapter Card Information:\n");
1739                 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1740         }
1741 }
1742
1743 /**
1744  * ipr_log_config_error - Log a configuration error.
1745  * @ioa_cfg:    ioa config struct
1746  * @hostrcb:    hostrcb struct
1747  *
1748  * Return value:
1749  *      none
1750  **/
1751 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1752                                  struct ipr_hostrcb *hostrcb)
1753 {
1754         int errors_logged, i;
1755         struct ipr_hostrcb_device_data_entry *dev_entry;
1756         struct ipr_hostrcb_type_03_error *error;
1757
1758         error = &hostrcb->hcam.u.error.u.type_03_error;
1759         errors_logged = be32_to_cpu(error->errors_logged);
1760
1761         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1762                 be32_to_cpu(error->errors_detected), errors_logged);
1763
1764         dev_entry = error->dev;
1765
1766         for (i = 0; i < errors_logged; i++, dev_entry++) {
1767                 ipr_err_separator;
1768
1769                 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1770                 ipr_log_vpd(&dev_entry->vpd);
1771
1772                 ipr_err("-----New Device Information-----\n");
1773                 ipr_log_vpd(&dev_entry->new_vpd);
1774
1775                 ipr_err("Cache Directory Card Information:\n");
1776                 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1777
1778                 ipr_err("Adapter Card Information:\n");
1779                 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1780
1781                 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1782                         be32_to_cpu(dev_entry->ioa_data[0]),
1783                         be32_to_cpu(dev_entry->ioa_data[1]),
1784                         be32_to_cpu(dev_entry->ioa_data[2]),
1785                         be32_to_cpu(dev_entry->ioa_data[3]),
1786                         be32_to_cpu(dev_entry->ioa_data[4]));
1787         }
1788 }
1789
1790 /**
1791  * ipr_log_enhanced_array_error - Log an array configuration error.
1792  * @ioa_cfg:    ioa config struct
1793  * @hostrcb:    hostrcb struct
1794  *
1795  * Return value:
1796  *      none
1797  **/
1798 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1799                                          struct ipr_hostrcb *hostrcb)
1800 {
1801         int i, num_entries;
1802         struct ipr_hostrcb_type_14_error *error;
1803         struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1804         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1805
1806         error = &hostrcb->hcam.u.error.u.type_14_error;
1807
1808         ipr_err_separator;
1809
1810         ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1811                 error->protection_level,
1812                 ioa_cfg->host->host_no,
1813                 error->last_func_vset_res_addr.bus,
1814                 error->last_func_vset_res_addr.target,
1815                 error->last_func_vset_res_addr.lun);
1816
1817         ipr_err_separator;
1818
1819         array_entry = error->array_member;
1820         num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1821                             ARRAY_SIZE(error->array_member));
1822
1823         for (i = 0; i < num_entries; i++, array_entry++) {
1824                 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1825                         continue;
1826
1827                 if (be32_to_cpu(error->exposed_mode_adn) == i)
1828                         ipr_err("Exposed Array Member %d:\n", i);
1829                 else
1830                         ipr_err("Array Member %d:\n", i);
1831
1832                 ipr_log_ext_vpd(&array_entry->vpd);
1833                 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1834                 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1835                                  "Expected Location");
1836
1837                 ipr_err_separator;
1838         }
1839 }
1840
1841 /**
1842  * ipr_log_array_error - Log an array configuration error.
1843  * @ioa_cfg:    ioa config struct
1844  * @hostrcb:    hostrcb struct
1845  *
1846  * Return value:
1847  *      none
1848  **/
1849 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1850                                 struct ipr_hostrcb *hostrcb)
1851 {
1852         int i;
1853         struct ipr_hostrcb_type_04_error *error;
1854         struct ipr_hostrcb_array_data_entry *array_entry;
1855         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1856
1857         error = &hostrcb->hcam.u.error.u.type_04_error;
1858
1859         ipr_err_separator;
1860
1861         ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1862                 error->protection_level,
1863                 ioa_cfg->host->host_no,
1864                 error->last_func_vset_res_addr.bus,
1865                 error->last_func_vset_res_addr.target,
1866                 error->last_func_vset_res_addr.lun);
1867
1868         ipr_err_separator;
1869
1870         array_entry = error->array_member;
1871
1872         for (i = 0; i < 18; i++) {
1873                 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1874                         continue;
1875
1876                 if (be32_to_cpu(error->exposed_mode_adn) == i)
1877                         ipr_err("Exposed Array Member %d:\n", i);
1878                 else
1879                         ipr_err("Array Member %d:\n", i);
1880
1881                 ipr_log_vpd(&array_entry->vpd);
1882
1883                 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1884                 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1885                                  "Expected Location");
1886
1887                 ipr_err_separator;
1888
1889                 if (i == 9)
1890                         array_entry = error->array_member2;
1891                 else
1892                         array_entry++;
1893         }
1894 }
1895
1896 /**
1897  * ipr_log_hex_data - Log additional hex IOA error data.
1898  * @ioa_cfg:    ioa config struct
1899  * @data:               IOA error data
1900  * @len:                data length
1901  *
1902  * Return value:
1903  *      none
1904  **/
1905 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1906 {
1907         int i;
1908
1909         if (len == 0)
1910                 return;
1911
1912         if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1913                 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1914
1915         for (i = 0; i < len / 4; i += 4) {
1916                 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1917                         be32_to_cpu(data[i]),
1918                         be32_to_cpu(data[i+1]),
1919                         be32_to_cpu(data[i+2]),
1920                         be32_to_cpu(data[i+3]));
1921         }
1922 }
1923
1924 /**
1925  * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1926  * @ioa_cfg:    ioa config struct
1927  * @hostrcb:    hostrcb struct
1928  *
1929  * Return value:
1930  *      none
1931  **/
1932 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1933                                             struct ipr_hostrcb *hostrcb)
1934 {
1935         struct ipr_hostrcb_type_17_error *error;
1936
1937         if (ioa_cfg->sis64)
1938                 error = &hostrcb->hcam.u.error64.u.type_17_error;
1939         else
1940                 error = &hostrcb->hcam.u.error.u.type_17_error;
1941
1942         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1943         strim(error->failure_reason);
1944
1945         ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1946                      be32_to_cpu(hostrcb->hcam.u.error.prc));
1947         ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1948         ipr_log_hex_data(ioa_cfg, error->data,
1949                          be32_to_cpu(hostrcb->hcam.length) -
1950                          (offsetof(struct ipr_hostrcb_error, u) +
1951                           offsetof(struct ipr_hostrcb_type_17_error, data)));
1952 }
1953
1954 /**
1955  * ipr_log_dual_ioa_error - Log a dual adapter error.
1956  * @ioa_cfg:    ioa config struct
1957  * @hostrcb:    hostrcb struct
1958  *
1959  * Return value:
1960  *      none
1961  **/
1962 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1963                                    struct ipr_hostrcb *hostrcb)
1964 {
1965         struct ipr_hostrcb_type_07_error *error;
1966
1967         error = &hostrcb->hcam.u.error.u.type_07_error;
1968         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1969         strim(error->failure_reason);
1970
1971         ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1972                      be32_to_cpu(hostrcb->hcam.u.error.prc));
1973         ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1974         ipr_log_hex_data(ioa_cfg, error->data,
1975                          be32_to_cpu(hostrcb->hcam.length) -
1976                          (offsetof(struct ipr_hostrcb_error, u) +
1977                           offsetof(struct ipr_hostrcb_type_07_error, data)));
1978 }
1979
1980 static const struct {
1981         u8 active;
1982         char *desc;
1983 } path_active_desc[] = {
1984         { IPR_PATH_NO_INFO, "Path" },
1985         { IPR_PATH_ACTIVE, "Active path" },
1986         { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1987 };
1988
1989 static const struct {
1990         u8 state;
1991         char *desc;
1992 } path_state_desc[] = {
1993         { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1994         { IPR_PATH_HEALTHY, "is healthy" },
1995         { IPR_PATH_DEGRADED, "is degraded" },
1996         { IPR_PATH_FAILED, "is failed" }
1997 };
1998
1999 /**
2000  * ipr_log_fabric_path - Log a fabric path error
2001  * @hostrcb:    hostrcb struct
2002  * @fabric:             fabric descriptor
2003  *
2004  * Return value:
2005  *      none
2006  **/
2007 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
2008                                 struct ipr_hostrcb_fabric_desc *fabric)
2009 {
2010         int i, j;
2011         u8 path_state = fabric->path_state;
2012         u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2013         u8 state = path_state & IPR_PATH_STATE_MASK;
2014
2015         for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2016                 if (path_active_desc[i].active != active)
2017                         continue;
2018
2019                 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2020                         if (path_state_desc[j].state != state)
2021                                 continue;
2022
2023                         if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2024                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2025                                              path_active_desc[i].desc, path_state_desc[j].desc,
2026                                              fabric->ioa_port);
2027                         } else if (fabric->cascaded_expander == 0xff) {
2028                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2029                                              path_active_desc[i].desc, path_state_desc[j].desc,
2030                                              fabric->ioa_port, fabric->phy);
2031                         } else if (fabric->phy == 0xff) {
2032                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2033                                              path_active_desc[i].desc, path_state_desc[j].desc,
2034                                              fabric->ioa_port, fabric->cascaded_expander);
2035                         } else {
2036                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2037                                              path_active_desc[i].desc, path_state_desc[j].desc,
2038                                              fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2039                         }
2040                         return;
2041                 }
2042         }
2043
2044         ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2045                 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2046 }
2047
2048 /**
2049  * ipr_log64_fabric_path - Log a fabric path error
2050  * @hostrcb:    hostrcb struct
2051  * @fabric:             fabric descriptor
2052  *
2053  * Return value:
2054  *      none
2055  **/
2056 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2057                                   struct ipr_hostrcb64_fabric_desc *fabric)
2058 {
2059         int i, j;
2060         u8 path_state = fabric->path_state;
2061         u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2062         u8 state = path_state & IPR_PATH_STATE_MASK;
2063         char buffer[IPR_MAX_RES_PATH_LENGTH];
2064
2065         for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2066                 if (path_active_desc[i].active != active)
2067                         continue;
2068
2069                 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2070                         if (path_state_desc[j].state != state)
2071                                 continue;
2072
2073                         ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2074                                      path_active_desc[i].desc, path_state_desc[j].desc,
2075                                      ipr_format_res_path(hostrcb->ioa_cfg,
2076                                                 fabric->res_path,
2077                                                 buffer, sizeof(buffer)));
2078                         return;
2079                 }
2080         }
2081
2082         ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2083                 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2084                                     buffer, sizeof(buffer)));
2085 }
2086
2087 static const struct {
2088         u8 type;
2089         char *desc;
2090 } path_type_desc[] = {
2091         { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2092         { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2093         { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2094         { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2095 };
2096
2097 static const struct {
2098         u8 status;
2099         char *desc;
2100 } path_status_desc[] = {
2101         { IPR_PATH_CFG_NO_PROB, "Functional" },
2102         { IPR_PATH_CFG_DEGRADED, "Degraded" },
2103         { IPR_PATH_CFG_FAILED, "Failed" },
2104         { IPR_PATH_CFG_SUSPECT, "Suspect" },
2105         { IPR_PATH_NOT_DETECTED, "Missing" },
2106         { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2107 };
2108
2109 static const char *link_rate[] = {
2110         "unknown",
2111         "disabled",
2112         "phy reset problem",
2113         "spinup hold",
2114         "port selector",
2115         "unknown",
2116         "unknown",
2117         "unknown",
2118         "1.5Gbps",
2119         "3.0Gbps",
2120         "unknown",
2121         "unknown",
2122         "unknown",
2123         "unknown",
2124         "unknown",
2125         "unknown"
2126 };
2127
2128 /**
2129  * ipr_log_path_elem - Log a fabric path element.
2130  * @hostrcb:    hostrcb struct
2131  * @cfg:                fabric path element struct
2132  *
2133  * Return value:
2134  *      none
2135  **/
2136 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2137                               struct ipr_hostrcb_config_element *cfg)
2138 {
2139         int i, j;
2140         u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2141         u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2142
2143         if (type == IPR_PATH_CFG_NOT_EXIST)
2144                 return;
2145
2146         for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2147                 if (path_type_desc[i].type != type)
2148                         continue;
2149
2150                 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2151                         if (path_status_desc[j].status != status)
2152                                 continue;
2153
2154                         if (type == IPR_PATH_CFG_IOA_PORT) {
2155                                 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2156                                              path_status_desc[j].desc, path_type_desc[i].desc,
2157                                              cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2158                                              be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2159                         } else {
2160                                 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2161                                         ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2162                                                      path_status_desc[j].desc, path_type_desc[i].desc,
2163                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2164                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2165                                 } else if (cfg->cascaded_expander == 0xff) {
2166                                         ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2167                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2168                                                      path_type_desc[i].desc, cfg->phy,
2169                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2170                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2171                                 } else if (cfg->phy == 0xff) {
2172                                         ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2173                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2174                                                      path_type_desc[i].desc, cfg->cascaded_expander,
2175                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2176                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2177                                 } else {
2178                                         ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2179                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2180                                                      path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2181                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2182                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2183                                 }
2184                         }
2185                         return;
2186                 }
2187         }
2188
2189         ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2190                      "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2191                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2192                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2193 }
2194
2195 /**
2196  * ipr_log64_path_elem - Log a fabric path element.
2197  * @hostrcb:    hostrcb struct
2198  * @cfg:                fabric path element struct
2199  *
2200  * Return value:
2201  *      none
2202  **/
2203 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2204                                 struct ipr_hostrcb64_config_element *cfg)
2205 {
2206         int i, j;
2207         u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2208         u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2209         u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2210         char buffer[IPR_MAX_RES_PATH_LENGTH];
2211
2212         if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2213                 return;
2214
2215         for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2216                 if (path_type_desc[i].type != type)
2217                         continue;
2218
2219                 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2220                         if (path_status_desc[j].status != status)
2221                                 continue;
2222
2223                         ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2224                                      path_status_desc[j].desc, path_type_desc[i].desc,
2225                                      ipr_format_res_path(hostrcb->ioa_cfg,
2226                                         cfg->res_path, buffer, sizeof(buffer)),
2227                                         link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2228                                         be32_to_cpu(cfg->wwid[0]),
2229                                         be32_to_cpu(cfg->wwid[1]));
2230                         return;
2231                 }
2232         }
2233         ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2234                      "WWN=%08X%08X\n", cfg->type_status,
2235                      ipr_format_res_path(hostrcb->ioa_cfg,
2236                         cfg->res_path, buffer, sizeof(buffer)),
2237                         link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2238                         be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2239 }
2240
2241 /**
2242  * ipr_log_fabric_error - Log a fabric error.
2243  * @ioa_cfg:    ioa config struct
2244  * @hostrcb:    hostrcb struct
2245  *
2246  * Return value:
2247  *      none
2248  **/
2249 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2250                                  struct ipr_hostrcb *hostrcb)
2251 {
2252         struct ipr_hostrcb_type_20_error *error;
2253         struct ipr_hostrcb_fabric_desc *fabric;
2254         struct ipr_hostrcb_config_element *cfg;
2255         int i, add_len;
2256
2257         error = &hostrcb->hcam.u.error.u.type_20_error;
2258         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2259         ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2260
2261         add_len = be32_to_cpu(hostrcb->hcam.length) -
2262                 (offsetof(struct ipr_hostrcb_error, u) +
2263                  offsetof(struct ipr_hostrcb_type_20_error, desc));
2264
2265         for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2266                 ipr_log_fabric_path(hostrcb, fabric);
2267                 for_each_fabric_cfg(fabric, cfg)
2268                         ipr_log_path_elem(hostrcb, cfg);
2269
2270                 add_len -= be16_to_cpu(fabric->length);
2271                 fabric = (struct ipr_hostrcb_fabric_desc *)
2272                         ((unsigned long)fabric + be16_to_cpu(fabric->length));
2273         }
2274
2275         ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2276 }
2277
2278 /**
2279  * ipr_log_sis64_array_error - Log a sis64 array error.
2280  * @ioa_cfg:    ioa config struct
2281  * @hostrcb:    hostrcb struct
2282  *
2283  * Return value:
2284  *      none
2285  **/
2286 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2287                                       struct ipr_hostrcb *hostrcb)
2288 {
2289         int i, num_entries;
2290         struct ipr_hostrcb_type_24_error *error;
2291         struct ipr_hostrcb64_array_data_entry *array_entry;
2292         char buffer[IPR_MAX_RES_PATH_LENGTH];
2293         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2294
2295         error = &hostrcb->hcam.u.error64.u.type_24_error;
2296
2297         ipr_err_separator;
2298
2299         ipr_err("RAID %s Array Configuration: %s\n",
2300                 error->protection_level,
2301                 ipr_format_res_path(ioa_cfg, error->last_res_path,
2302                         buffer, sizeof(buffer)));
2303
2304         ipr_err_separator;
2305
2306         array_entry = error->array_member;
2307         num_entries = min_t(u32, error->num_entries,
2308                             ARRAY_SIZE(error->array_member));
2309
2310         for (i = 0; i < num_entries; i++, array_entry++) {
2311
2312                 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2313                         continue;
2314
2315                 if (error->exposed_mode_adn == i)
2316                         ipr_err("Exposed Array Member %d:\n", i);
2317                 else
2318                         ipr_err("Array Member %d:\n", i);
2319
2320                 ipr_err("Array Member %d:\n", i);
2321                 ipr_log_ext_vpd(&array_entry->vpd);
2322                 ipr_err("Current Location: %s\n",
2323                          ipr_format_res_path(ioa_cfg, array_entry->res_path,
2324                                 buffer, sizeof(buffer)));
2325                 ipr_err("Expected Location: %s\n",
2326                          ipr_format_res_path(ioa_cfg,
2327                                 array_entry->expected_res_path,
2328                                 buffer, sizeof(buffer)));
2329
2330                 ipr_err_separator;
2331         }
2332 }
2333
2334 /**
2335  * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2336  * @ioa_cfg:    ioa config struct
2337  * @hostrcb:    hostrcb struct
2338  *
2339  * Return value:
2340  *      none
2341  **/
2342 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2343                                        struct ipr_hostrcb *hostrcb)
2344 {
2345         struct ipr_hostrcb_type_30_error *error;
2346         struct ipr_hostrcb64_fabric_desc *fabric;
2347         struct ipr_hostrcb64_config_element *cfg;
2348         int i, add_len;
2349
2350         error = &hostrcb->hcam.u.error64.u.type_30_error;
2351
2352         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2353         ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2354
2355         add_len = be32_to_cpu(hostrcb->hcam.length) -
2356                 (offsetof(struct ipr_hostrcb64_error, u) +
2357                  offsetof(struct ipr_hostrcb_type_30_error, desc));
2358
2359         for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2360                 ipr_log64_fabric_path(hostrcb, fabric);
2361                 for_each_fabric_cfg(fabric, cfg)
2362                         ipr_log64_path_elem(hostrcb, cfg);
2363
2364                 add_len -= be16_to_cpu(fabric->length);
2365                 fabric = (struct ipr_hostrcb64_fabric_desc *)
2366                         ((unsigned long)fabric + be16_to_cpu(fabric->length));
2367         }
2368
2369         ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2370 }
2371
2372 /**
2373  * ipr_log_generic_error - Log an adapter error.
2374  * @ioa_cfg:    ioa config struct
2375  * @hostrcb:    hostrcb struct
2376  *
2377  * Return value:
2378  *      none
2379  **/
2380 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2381                                   struct ipr_hostrcb *hostrcb)
2382 {
2383         ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2384                          be32_to_cpu(hostrcb->hcam.length));
2385 }
2386
2387 /**
2388  * ipr_log_sis64_device_error - Log a cache error.
2389  * @ioa_cfg:    ioa config struct
2390  * @hostrcb:    hostrcb struct
2391  *
2392  * Return value:
2393  *      none
2394  **/
2395 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2396                                          struct ipr_hostrcb *hostrcb)
2397 {
2398         struct ipr_hostrcb_type_21_error *error;
2399         char buffer[IPR_MAX_RES_PATH_LENGTH];
2400
2401         error = &hostrcb->hcam.u.error64.u.type_21_error;
2402
2403         ipr_err("-----Failing Device Information-----\n");
2404         ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2405                 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2406                  be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2407         ipr_err("Device Resource Path: %s\n",
2408                 __ipr_format_res_path(error->res_path,
2409                                       buffer, sizeof(buffer)));
2410         error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2411         error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2412         ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2413         ipr_err("Secondary Problem Description:  %s\n", error->second_problem_desc);
2414         ipr_err("SCSI Sense Data:\n");
2415         ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2416         ipr_err("SCSI Command Descriptor Block: \n");
2417         ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2418
2419         ipr_err("Additional IOA Data:\n");
2420         ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2421 }
2422
2423 /**
2424  * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2425  * @ioasc:      IOASC
2426  *
2427  * This function will return the index of into the ipr_error_table
2428  * for the specified IOASC. If the IOASC is not in the table,
2429  * 0 will be returned, which points to the entry used for unknown errors.
2430  *
2431  * Return value:
2432  *      index into the ipr_error_table
2433  **/
2434 static u32 ipr_get_error(u32 ioasc)
2435 {
2436         int i;
2437
2438         for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2439                 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2440                         return i;
2441
2442         return 0;
2443 }
2444
2445 /**
2446  * ipr_handle_log_data - Log an adapter error.
2447  * @ioa_cfg:    ioa config struct
2448  * @hostrcb:    hostrcb struct
2449  *
2450  * This function logs an adapter error to the system.
2451  *
2452  * Return value:
2453  *      none
2454  **/
2455 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2456                                 struct ipr_hostrcb *hostrcb)
2457 {
2458         u32 ioasc;
2459         int error_index;
2460         struct ipr_hostrcb_type_21_error *error;
2461
2462         if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2463                 return;
2464
2465         if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2466                 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2467
2468         if (ioa_cfg->sis64)
2469                 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2470         else
2471                 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2472
2473         if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2474             ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2475                 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2476                 scsi_report_bus_reset(ioa_cfg->host,
2477                                       hostrcb->hcam.u.error.fd_res_addr.bus);
2478         }
2479
2480         error_index = ipr_get_error(ioasc);
2481
2482         if (!ipr_error_table[error_index].log_hcam)
2483                 return;
2484
2485         if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2486             hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2487                 error = &hostrcb->hcam.u.error64.u.type_21_error;
2488
2489                 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2490                         ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2491                                 return;
2492         }
2493
2494         ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2495
2496         /* Set indication we have logged an error */
2497         ioa_cfg->errors_logged++;
2498
2499         if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2500                 return;
2501         if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2502                 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2503
2504         switch (hostrcb->hcam.overlay_id) {
2505         case IPR_HOST_RCB_OVERLAY_ID_2:
2506                 ipr_log_cache_error(ioa_cfg, hostrcb);
2507                 break;
2508         case IPR_HOST_RCB_OVERLAY_ID_3:
2509                 ipr_log_config_error(ioa_cfg, hostrcb);
2510                 break;
2511         case IPR_HOST_RCB_OVERLAY_ID_4:
2512         case IPR_HOST_RCB_OVERLAY_ID_6:
2513                 ipr_log_array_error(ioa_cfg, hostrcb);
2514                 break;
2515         case IPR_HOST_RCB_OVERLAY_ID_7:
2516                 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2517                 break;
2518         case IPR_HOST_RCB_OVERLAY_ID_12:
2519                 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2520                 break;
2521         case IPR_HOST_RCB_OVERLAY_ID_13:
2522                 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2523                 break;
2524         case IPR_HOST_RCB_OVERLAY_ID_14:
2525         case IPR_HOST_RCB_OVERLAY_ID_16:
2526                 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2527                 break;
2528         case IPR_HOST_RCB_OVERLAY_ID_17:
2529                 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2530                 break;
2531         case IPR_HOST_RCB_OVERLAY_ID_20:
2532                 ipr_log_fabric_error(ioa_cfg, hostrcb);
2533                 break;
2534         case IPR_HOST_RCB_OVERLAY_ID_21:
2535                 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2536                 break;
2537         case IPR_HOST_RCB_OVERLAY_ID_23:
2538                 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2539                 break;
2540         case IPR_HOST_RCB_OVERLAY_ID_24:
2541         case IPR_HOST_RCB_OVERLAY_ID_26:
2542                 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2543                 break;
2544         case IPR_HOST_RCB_OVERLAY_ID_30:
2545                 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2546                 break;
2547         case IPR_HOST_RCB_OVERLAY_ID_1:
2548         case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2549         default:
2550                 ipr_log_generic_error(ioa_cfg, hostrcb);
2551                 break;
2552         }
2553 }
2554
2555 /**
2556  * ipr_process_error - Op done function for an adapter error log.
2557  * @ipr_cmd:    ipr command struct
2558  *
2559  * This function is the op done function for an error log host
2560  * controlled async from the adapter. It will log the error and
2561  * send the HCAM back to the adapter.
2562  *
2563  * Return value:
2564  *      none
2565  **/
2566 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2567 {
2568         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2569         struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2570         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2571         u32 fd_ioasc;
2572
2573         if (ioa_cfg->sis64)
2574                 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2575         else
2576                 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2577
2578         list_del(&hostrcb->queue);
2579         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2580
2581         if (!ioasc) {
2582                 ipr_handle_log_data(ioa_cfg, hostrcb);
2583                 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2584                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2585         } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2586                    ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2587                 dev_err(&ioa_cfg->pdev->dev,
2588                         "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2589         }
2590
2591         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2592 }
2593
2594 /**
2595  * ipr_timeout -  An internally generated op has timed out.
2596  * @ipr_cmd:    ipr command struct
2597  *
2598  * This function blocks host requests and initiates an
2599  * adapter reset.
2600  *
2601  * Return value:
2602  *      none
2603  **/
2604 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2605 {
2606         unsigned long lock_flags = 0;
2607         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2608
2609         ENTER;
2610         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2611
2612         ioa_cfg->errors_logged++;
2613         dev_err(&ioa_cfg->pdev->dev,
2614                 "Adapter being reset due to command timeout.\n");
2615
2616         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2617                 ioa_cfg->sdt_state = GET_DUMP;
2618
2619         if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2620                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2621
2622         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2623         LEAVE;
2624 }
2625
2626 /**
2627  * ipr_oper_timeout -  Adapter timed out transitioning to operational
2628  * @ipr_cmd:    ipr command struct
2629  *
2630  * This function blocks host requests and initiates an
2631  * adapter reset.
2632  *
2633  * Return value:
2634  *      none
2635  **/
2636 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2637 {
2638         unsigned long lock_flags = 0;
2639         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2640
2641         ENTER;
2642         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2643
2644         ioa_cfg->errors_logged++;
2645         dev_err(&ioa_cfg->pdev->dev,
2646                 "Adapter timed out transitioning to operational.\n");
2647
2648         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2649                 ioa_cfg->sdt_state = GET_DUMP;
2650
2651         if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2652                 if (ipr_fastfail)
2653                         ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2654                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2655         }
2656
2657         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2658         LEAVE;
2659 }
2660
2661 /**
2662  * ipr_find_ses_entry - Find matching SES in SES table
2663  * @res:        resource entry struct of SES
2664  *
2665  * Return value:
2666  *      pointer to SES table entry / NULL on failure
2667  **/
2668 static const struct ipr_ses_table_entry *
2669 ipr_find_ses_entry(struct ipr_resource_entry *res)
2670 {
2671         int i, j, matches;
2672         struct ipr_std_inq_vpids *vpids;
2673         const struct ipr_ses_table_entry *ste = ipr_ses_table;
2674
2675         for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2676                 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2677                         if (ste->compare_product_id_byte[j] == 'X') {
2678                                 vpids = &res->std_inq_data.vpids;
2679                                 if (vpids->product_id[j] == ste->product_id[j])
2680                                         matches++;
2681                                 else
2682                                         break;
2683                         } else
2684                                 matches++;
2685                 }
2686
2687                 if (matches == IPR_PROD_ID_LEN)
2688                         return ste;
2689         }
2690
2691         return NULL;
2692 }
2693
2694 /**
2695  * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2696  * @ioa_cfg:    ioa config struct
2697  * @bus:                SCSI bus
2698  * @bus_width:  bus width
2699  *
2700  * Return value:
2701  *      SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2702  *      For a 2-byte wide SCSI bus, the maximum transfer speed is
2703  *      twice the maximum transfer rate (e.g. for a wide enabled bus,
2704  *      max 160MHz = max 320MB/sec).
2705  **/
2706 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2707 {
2708         struct ipr_resource_entry *res;
2709         const struct ipr_ses_table_entry *ste;
2710         u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2711
2712         /* Loop through each config table entry in the config table buffer */
2713         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2714                 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2715                         continue;
2716
2717                 if (bus != res->bus)
2718                         continue;
2719
2720                 if (!(ste = ipr_find_ses_entry(res)))
2721                         continue;
2722
2723                 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2724         }
2725
2726         return max_xfer_rate;
2727 }
2728
2729 /**
2730  * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2731  * @ioa_cfg:            ioa config struct
2732  * @max_delay:          max delay in micro-seconds to wait
2733  *
2734  * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2735  *
2736  * Return value:
2737  *      0 on success / other on failure
2738  **/
2739 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2740 {
2741         volatile u32 pcii_reg;
2742         int delay = 1;
2743
2744         /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2745         while (delay < max_delay) {
2746                 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2747
2748                 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2749                         return 0;
2750
2751                 /* udelay cannot be used if delay is more than a few milliseconds */
2752                 if ((delay / 1000) > MAX_UDELAY_MS)
2753                         mdelay(delay / 1000);
2754                 else
2755                         udelay(delay);
2756
2757                 delay += delay;
2758         }
2759         return -EIO;
2760 }
2761
2762 /**
2763  * ipr_get_sis64_dump_data_section - Dump IOA memory
2764  * @ioa_cfg:                    ioa config struct
2765  * @start_addr:                 adapter address to dump
2766  * @dest:                       destination kernel buffer
2767  * @length_in_words:            length to dump in 4 byte words
2768  *
2769  * Return value:
2770  *      0 on success
2771  **/
2772 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2773                                            u32 start_addr,
2774                                            __be32 *dest, u32 length_in_words)
2775 {
2776         int i;
2777
2778         for (i = 0; i < length_in_words; i++) {
2779                 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2780                 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2781                 dest++;
2782         }
2783
2784         return 0;
2785 }
2786
2787 /**
2788  * ipr_get_ldump_data_section - Dump IOA memory
2789  * @ioa_cfg:                    ioa config struct
2790  * @start_addr:                 adapter address to dump
2791  * @dest:                               destination kernel buffer
2792  * @length_in_words:    length to dump in 4 byte words
2793  *
2794  * Return value:
2795  *      0 on success / -EIO on failure
2796  **/
2797 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2798                                       u32 start_addr,
2799                                       __be32 *dest, u32 length_in_words)
2800 {
2801         volatile u32 temp_pcii_reg;
2802         int i, delay = 0;
2803
2804         if (ioa_cfg->sis64)
2805                 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2806                                                        dest, length_in_words);
2807
2808         /* Write IOA interrupt reg starting LDUMP state  */
2809         writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2810                ioa_cfg->regs.set_uproc_interrupt_reg32);
2811
2812         /* Wait for IO debug acknowledge */
2813         if (ipr_wait_iodbg_ack(ioa_cfg,
2814                                IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2815                 dev_err(&ioa_cfg->pdev->dev,
2816                         "IOA dump long data transfer timeout\n");
2817                 return -EIO;
2818         }
2819
2820         /* Signal LDUMP interlocked - clear IO debug ack */
2821         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2822                ioa_cfg->regs.clr_interrupt_reg);
2823
2824         /* Write Mailbox with starting address */
2825         writel(start_addr, ioa_cfg->ioa_mailbox);
2826
2827         /* Signal address valid - clear IOA Reset alert */
2828         writel(IPR_UPROCI_RESET_ALERT,
2829                ioa_cfg->regs.clr_uproc_interrupt_reg32);
2830
2831         for (i = 0; i < length_in_words; i++) {
2832                 /* Wait for IO debug acknowledge */
2833                 if (ipr_wait_iodbg_ack(ioa_cfg,
2834                                        IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2835                         dev_err(&ioa_cfg->pdev->dev,
2836                                 "IOA dump short data transfer timeout\n");
2837                         return -EIO;
2838                 }
2839
2840                 /* Read data from mailbox and increment destination pointer */
2841                 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2842                 dest++;
2843
2844                 /* For all but the last word of data, signal data received */
2845                 if (i < (length_in_words - 1)) {
2846                         /* Signal dump data received - Clear IO debug Ack */
2847                         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2848                                ioa_cfg->regs.clr_interrupt_reg);
2849                 }
2850         }
2851
2852         /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2853         writel(IPR_UPROCI_RESET_ALERT,
2854                ioa_cfg->regs.set_uproc_interrupt_reg32);
2855
2856         writel(IPR_UPROCI_IO_DEBUG_ALERT,
2857                ioa_cfg->regs.clr_uproc_interrupt_reg32);
2858
2859         /* Signal dump data received - Clear IO debug Ack */
2860         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2861                ioa_cfg->regs.clr_interrupt_reg);
2862
2863         /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2864         while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2865                 temp_pcii_reg =
2866                     readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2867
2868                 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2869                         return 0;
2870
2871                 udelay(10);
2872                 delay += 10;
2873         }
2874
2875         return 0;
2876 }
2877
2878 #ifdef CONFIG_SCSI_IPR_DUMP
2879 /**
2880  * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2881  * @ioa_cfg:            ioa config struct
2882  * @pci_address:        adapter address
2883  * @length:                     length of data to copy
2884  *
2885  * Copy data from PCI adapter to kernel buffer.
2886  * Note: length MUST be a 4 byte multiple
2887  * Return value:
2888  *      0 on success / other on failure
2889  **/
2890 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2891                         unsigned long pci_address, u32 length)
2892 {
2893         int bytes_copied = 0;
2894         int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2895         __be32 *page;
2896         unsigned long lock_flags = 0;
2897         struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2898
2899         if (ioa_cfg->sis64)
2900                 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2901         else
2902                 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2903
2904         while (bytes_copied < length &&
2905                (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2906                 if (ioa_dump->page_offset >= PAGE_SIZE ||
2907                     ioa_dump->page_offset == 0) {
2908                         page = (__be32 *)__get_free_page(GFP_ATOMIC);
2909
2910                         if (!page) {
2911                                 ipr_trace;
2912                                 return bytes_copied;
2913                         }
2914
2915                         ioa_dump->page_offset = 0;
2916                         ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2917                         ioa_dump->next_page_index++;
2918                 } else
2919                         page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2920
2921                 rem_len = length - bytes_copied;
2922                 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2923                 cur_len = min(rem_len, rem_page_len);
2924
2925                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2926                 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2927                         rc = -EIO;
2928                 } else {
2929                         rc = ipr_get_ldump_data_section(ioa_cfg,
2930                                                         pci_address + bytes_copied,
2931                                                         &page[ioa_dump->page_offset / 4],
2932                                                         (cur_len / sizeof(u32)));
2933                 }
2934                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2935
2936                 if (!rc) {
2937                         ioa_dump->page_offset += cur_len;
2938                         bytes_copied += cur_len;
2939                 } else {
2940                         ipr_trace;
2941                         break;
2942                 }
2943                 schedule();
2944         }
2945
2946         return bytes_copied;
2947 }
2948
2949 /**
2950  * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2951  * @hdr:        dump entry header struct
2952  *
2953  * Return value:
2954  *      nothing
2955  **/
2956 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2957 {
2958         hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2959         hdr->num_elems = 1;
2960         hdr->offset = sizeof(*hdr);
2961         hdr->status = IPR_DUMP_STATUS_SUCCESS;
2962 }
2963
2964 /**
2965  * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2966  * @ioa_cfg:    ioa config struct
2967  * @driver_dump:        driver dump struct
2968  *
2969  * Return value:
2970  *      nothing
2971  **/
2972 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2973                                    struct ipr_driver_dump *driver_dump)
2974 {
2975         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2976
2977         ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2978         driver_dump->ioa_type_entry.hdr.len =
2979                 sizeof(struct ipr_dump_ioa_type_entry) -
2980                 sizeof(struct ipr_dump_entry_header);
2981         driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2982         driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2983         driver_dump->ioa_type_entry.type = ioa_cfg->type;
2984         driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2985                 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2986                 ucode_vpd->minor_release[1];
2987         driver_dump->hdr.num_entries++;
2988 }
2989
2990 /**
2991  * ipr_dump_version_data - Fill in the driver version in the dump.
2992  * @ioa_cfg:    ioa config struct
2993  * @driver_dump:        driver dump struct
2994  *
2995  * Return value:
2996  *      nothing
2997  **/
2998 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2999                                   struct ipr_driver_dump *driver_dump)
3000 {
3001         ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3002         driver_dump->version_entry.hdr.len =
3003                 sizeof(struct ipr_dump_version_entry) -
3004                 sizeof(struct ipr_dump_entry_header);
3005         driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3006         driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3007         strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3008         driver_dump->hdr.num_entries++;
3009 }
3010
3011 /**
3012  * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3013  * @ioa_cfg:    ioa config struct
3014  * @driver_dump:        driver dump struct
3015  *
3016  * Return value:
3017  *      nothing
3018  **/
3019 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3020                                    struct ipr_driver_dump *driver_dump)
3021 {
3022         ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3023         driver_dump->trace_entry.hdr.len =
3024                 sizeof(struct ipr_dump_trace_entry) -
3025                 sizeof(struct ipr_dump_entry_header);
3026         driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3027         driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3028         memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3029         driver_dump->hdr.num_entries++;
3030 }
3031
3032 /**
3033  * ipr_dump_location_data - Fill in the IOA location in the dump.
3034  * @ioa_cfg:    ioa config struct
3035  * @driver_dump:        driver dump struct
3036  *
3037  * Return value:
3038  *      nothing
3039  **/
3040 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3041                                    struct ipr_driver_dump *driver_dump)
3042 {
3043         ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3044         driver_dump->location_entry.hdr.len =
3045                 sizeof(struct ipr_dump_location_entry) -
3046                 sizeof(struct ipr_dump_entry_header);
3047         driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3048         driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3049         strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3050         driver_dump->hdr.num_entries++;
3051 }
3052
3053 /**
3054  * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3055  * @ioa_cfg:    ioa config struct
3056  * @dump:               dump struct
3057  *
3058  * Return value:
3059  *      nothing
3060  **/
3061 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3062 {
3063         unsigned long start_addr, sdt_word;
3064         unsigned long lock_flags = 0;
3065         struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3066         struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3067         u32 num_entries, max_num_entries, start_off, end_off;
3068         u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3069         struct ipr_sdt *sdt;
3070         int valid = 1;
3071         int i;
3072
3073         ENTER;
3074
3075         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3076
3077         if (ioa_cfg->sdt_state != READ_DUMP) {
3078                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3079                 return;
3080         }
3081
3082         if (ioa_cfg->sis64) {
3083                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3084                 ssleep(IPR_DUMP_DELAY_SECONDS);
3085                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3086         }
3087
3088         start_addr = readl(ioa_cfg->ioa_mailbox);
3089
3090         if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3091                 dev_err(&ioa_cfg->pdev->dev,
3092                         "Invalid dump table format: %lx\n", start_addr);
3093                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3094                 return;
3095         }
3096
3097         dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3098
3099         driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3100
3101         /* Initialize the overall dump header */
3102         driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3103         driver_dump->hdr.num_entries = 1;
3104         driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3105         driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3106         driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3107         driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3108
3109         ipr_dump_version_data(ioa_cfg, driver_dump);
3110         ipr_dump_location_data(ioa_cfg, driver_dump);
3111         ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3112         ipr_dump_trace_data(ioa_cfg, driver_dump);
3113
3114         /* Update dump_header */
3115         driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3116
3117         /* IOA Dump entry */
3118         ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3119         ioa_dump->hdr.len = 0;
3120         ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3121         ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3122
3123         /* First entries in sdt are actually a list of dump addresses and
3124          lengths to gather the real dump data.  sdt represents the pointer
3125          to the ioa generated dump table.  Dump data will be extracted based
3126          on entries in this table */
3127         sdt = &ioa_dump->sdt;
3128
3129         if (ioa_cfg->sis64) {
3130                 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3131                 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3132         } else {
3133                 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3134                 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3135         }
3136
3137         bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3138                         (max_num_entries * sizeof(struct ipr_sdt_entry));
3139         rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3140                                         bytes_to_copy / sizeof(__be32));
3141
3142         /* Smart Dump table is ready to use and the first entry is valid */
3143         if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3144             (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3145                 dev_err(&ioa_cfg->pdev->dev,
3146                         "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3147                         rc, be32_to_cpu(sdt->hdr.state));
3148                 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3149                 ioa_cfg->sdt_state = DUMP_OBTAINED;
3150                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3151                 return;
3152         }
3153
3154         num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3155
3156         if (num_entries > max_num_entries)
3157                 num_entries = max_num_entries;
3158
3159         /* Update dump length to the actual data to be copied */
3160         dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3161         if (ioa_cfg->sis64)
3162                 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3163         else
3164                 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3165
3166         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3167
3168         for (i = 0; i < num_entries; i++) {
3169                 if (ioa_dump->hdr.len > max_dump_size) {
3170                         driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3171                         break;
3172                 }
3173
3174                 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3175                         sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3176                         if (ioa_cfg->sis64)
3177                                 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3178                         else {
3179                                 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3180                                 end_off = be32_to_cpu(sdt->entry[i].end_token);
3181
3182                                 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3183                                         bytes_to_copy = end_off - start_off;
3184                                 else
3185                                         valid = 0;
3186                         }
3187                         if (valid) {
3188                                 if (bytes_to_copy > max_dump_size) {
3189                                         sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3190                                         continue;
3191                                 }
3192
3193                                 /* Copy data from adapter to driver buffers */
3194                                 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3195                                                             bytes_to_copy);
3196
3197                                 ioa_dump->hdr.len += bytes_copied;
3198
3199                                 if (bytes_copied != bytes_to_copy) {
3200                                         driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3201                                         break;
3202                                 }
3203                         }
3204                 }
3205         }
3206
3207         dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3208
3209         /* Update dump_header */
3210         driver_dump->hdr.len += ioa_dump->hdr.len;
3211         wmb();
3212         ioa_cfg->sdt_state = DUMP_OBTAINED;
3213         LEAVE;
3214 }
3215
3216 #else
3217 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3218 #endif
3219
3220 /**
3221  * ipr_release_dump - Free adapter dump memory
3222  * @kref:       kref struct
3223  *
3224  * Return value:
3225  *      nothing
3226  **/
3227 static void ipr_release_dump(struct kref *kref)
3228 {
3229         struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3230         struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3231         unsigned long lock_flags = 0;
3232         int i;
3233
3234         ENTER;
3235         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3236         ioa_cfg->dump = NULL;
3237         ioa_cfg->sdt_state = INACTIVE;
3238         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3239
3240         for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3241                 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3242
3243         vfree(dump->ioa_dump.ioa_data);
3244         kfree(dump);
3245         LEAVE;
3246 }
3247
3248 /**
3249  * ipr_worker_thread - Worker thread
3250  * @work:               ioa config struct
3251  *
3252  * Called at task level from a work thread. This function takes care
3253  * of adding and removing device from the mid-layer as configuration
3254  * changes are detected by the adapter.
3255  *
3256  * Return value:
3257  *      nothing
3258  **/
3259 static void ipr_worker_thread(struct work_struct *work)
3260 {
3261         unsigned long lock_flags;
3262         struct ipr_resource_entry *res;
3263         struct scsi_device *sdev;
3264         struct ipr_dump *dump;
3265         struct ipr_ioa_cfg *ioa_cfg =
3266                 container_of(work, struct ipr_ioa_cfg, work_q);
3267         u8 bus, target, lun;
3268         int did_work;
3269
3270         ENTER;
3271         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3272
3273         if (ioa_cfg->sdt_state == READ_DUMP) {
3274                 dump = ioa_cfg->dump;
3275                 if (!dump) {
3276                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3277                         return;
3278                 }
3279                 kref_get(&dump->kref);
3280                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3281                 ipr_get_ioa_dump(ioa_cfg, dump);
3282                 kref_put(&dump->kref, ipr_release_dump);
3283
3284                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3285                 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3286                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3287                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3288                 return;
3289         }
3290
3291 restart:
3292         do {
3293                 did_work = 0;
3294                 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3295                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3296                         return;
3297                 }
3298
3299                 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3300                         if (res->del_from_ml && res->sdev) {
3301                                 did_work = 1;
3302                                 sdev = res->sdev;
3303                                 if (!scsi_device_get(sdev)) {
3304                                         if (!res->add_to_ml)
3305                                                 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3306                                         else
3307                                                 res->del_from_ml = 0;
3308                                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3309                                         scsi_remove_device(sdev);
3310                                         scsi_device_put(sdev);
3311                                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3312                                 }
3313                                 break;
3314                         }
3315                 }
3316         } while (did_work);
3317
3318         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3319                 if (res->add_to_ml) {
3320                         bus = res->bus;
3321                         target = res->target;
3322                         lun = res->lun;
3323                         res->add_to_ml = 0;
3324                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3325                         scsi_add_device(ioa_cfg->host, bus, target, lun);
3326                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3327                         goto restart;
3328                 }
3329         }
3330
3331         ioa_cfg->scan_done = 1;
3332         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3333         kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3334         LEAVE;
3335 }
3336
3337 #ifdef CONFIG_SCSI_IPR_TRACE
3338 /**
3339  * ipr_read_trace - Dump the adapter trace
3340  * @filp:               open sysfs file
3341  * @kobj:               kobject struct
3342  * @bin_attr:           bin_attribute struct
3343  * @buf:                buffer
3344  * @off:                offset
3345  * @count:              buffer size
3346  *
3347  * Return value:
3348  *      number of bytes printed to buffer
3349  **/
3350 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3351                               struct bin_attribute *bin_attr,
3352                               char *buf, loff_t off, size_t count)
3353 {
3354         struct device *dev = container_of(kobj, struct device, kobj);
3355         struct Scsi_Host *shost = class_to_shost(dev);
3356         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3357         unsigned long lock_flags = 0;
3358         ssize_t ret;
3359
3360         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3361         ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3362                                 IPR_TRACE_SIZE);
3363         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3364
3365         return ret;
3366 }
3367
3368 static struct bin_attribute ipr_trace_attr = {
3369         .attr = {
3370                 .name = "trace",
3371                 .mode = S_IRUGO,
3372         },
3373         .size = 0,
3374         .read = ipr_read_trace,
3375 };
3376 #endif
3377
3378 /**
3379  * ipr_show_fw_version - Show the firmware version
3380  * @dev:        class device struct
3381  * @buf:        buffer
3382  *
3383  * Return value:
3384  *      number of bytes printed to buffer
3385  **/
3386 static ssize_t ipr_show_fw_version(struct device *dev,
3387                                    struct device_attribute *attr, char *buf)
3388 {
3389         struct Scsi_Host *shost = class_to_shost(dev);
3390         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3391         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3392         unsigned long lock_flags = 0;
3393         int len;
3394
3395         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3396         len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3397                        ucode_vpd->major_release, ucode_vpd->card_type,
3398                        ucode_vpd->minor_release[0],
3399                        ucode_vpd->minor_release[1]);
3400         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3401         return len;
3402 }
3403
3404 static struct device_attribute ipr_fw_version_attr = {
3405         .attr = {
3406                 .name =         "fw_version",
3407                 .mode =         S_IRUGO,
3408         },
3409         .show = ipr_show_fw_version,
3410 };
3411
3412 /**
3413  * ipr_show_log_level - Show the adapter's error logging level
3414  * @dev:        class device struct
3415  * @buf:        buffer
3416  *
3417  * Return value:
3418  *      number of bytes printed to buffer
3419  **/
3420 static ssize_t ipr_show_log_level(struct device *dev,
3421                                    struct device_attribute *attr, char *buf)
3422 {
3423         struct Scsi_Host *shost = class_to_shost(dev);
3424         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3425         unsigned long lock_flags = 0;
3426         int len;
3427
3428         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3429         len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3430         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3431         return len;
3432 }
3433
3434 /**
3435  * ipr_store_log_level - Change the adapter's error logging level
3436  * @dev:        class device struct
3437  * @buf:        buffer
3438  *
3439  * Return value:
3440  *      number of bytes printed to buffer
3441  **/
3442 static ssize_t ipr_store_log_level(struct device *dev,
3443                                    struct device_attribute *attr,
3444                                    const char *buf, size_t count)
3445 {
3446         struct Scsi_Host *shost = class_to_shost(dev);
3447         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3448         unsigned long lock_flags = 0;
3449
3450         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3451         ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3452         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3453         return strlen(buf);
3454 }
3455
3456 static struct device_attribute ipr_log_level_attr = {
3457         .attr = {
3458                 .name =         "log_level",
3459                 .mode =         S_IRUGO | S_IWUSR,
3460         },
3461         .show = ipr_show_log_level,
3462         .store = ipr_store_log_level
3463 };
3464
3465 /**
3466  * ipr_store_diagnostics - IOA Diagnostics interface
3467  * @dev:        device struct
3468  * @buf:        buffer
3469  * @count:      buffer size
3470  *
3471  * This function will reset the adapter and wait a reasonable
3472  * amount of time for any errors that the adapter might log.
3473  *
3474  * Return value:
3475  *      count on success / other on failure
3476  **/
3477 static ssize_t ipr_store_diagnostics(struct device *dev,
3478                                      struct device_attribute *attr,
3479                                      const char *buf, size_t count)
3480 {
3481         struct Scsi_Host *shost = class_to_shost(dev);
3482         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3483         unsigned long lock_flags = 0;
3484         int rc = count;
3485
3486         if (!capable(CAP_SYS_ADMIN))
3487                 return -EACCES;
3488
3489         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3490         while (ioa_cfg->in_reset_reload) {
3491                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3492                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3493                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3494         }
3495
3496         ioa_cfg->errors_logged = 0;
3497         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3498
3499         if (ioa_cfg->in_reset_reload) {
3500                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3501                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3502
3503                 /* Wait for a second for any errors to be logged */
3504                 msleep(1000);
3505         } else {
3506                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3507                 return -EIO;
3508         }
3509
3510         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3511         if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3512                 rc = -EIO;
3513         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3514
3515         return rc;
3516 }
3517
3518 static struct device_attribute ipr_diagnostics_attr = {
3519         .attr = {
3520                 .name =         "run_diagnostics",
3521                 .mode =         S_IWUSR,
3522         },
3523         .store = ipr_store_diagnostics
3524 };
3525
3526 /**
3527  * ipr_show_adapter_state - Show the adapter's state
3528  * @class_dev:  device struct
3529  * @buf:        buffer
3530  *
3531  * Return value:
3532  *      number of bytes printed to buffer
3533  **/
3534 static ssize_t ipr_show_adapter_state(struct device *dev,
3535                                       struct device_attribute *attr, char *buf)
3536 {
3537         struct Scsi_Host *shost = class_to_shost(dev);
3538         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3539         unsigned long lock_flags = 0;
3540         int len;
3541
3542         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3543         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3544                 len = snprintf(buf, PAGE_SIZE, "offline\n");
3545         else
3546                 len = snprintf(buf, PAGE_SIZE, "online\n");
3547         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3548         return len;
3549 }
3550
3551 /**
3552  * ipr_store_adapter_state - Change adapter state
3553  * @dev:        device struct
3554  * @buf:        buffer
3555  * @count:      buffer size
3556  *
3557  * This function will change the adapter's state.
3558  *
3559  * Return value:
3560  *      count on success / other on failure
3561  **/
3562 static ssize_t ipr_store_adapter_state(struct device *dev,
3563                                        struct device_attribute *attr,
3564                                        const char *buf, size_t count)
3565 {
3566         struct Scsi_Host *shost = class_to_shost(dev);
3567         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3568         unsigned long lock_flags;
3569         int result = count, i;
3570
3571         if (!capable(CAP_SYS_ADMIN))
3572                 return -EACCES;
3573
3574         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3575         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3576             !strncmp(buf, "online", 6)) {
3577                 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3578                         spin_lock(&ioa_cfg->hrrq[i]._lock);
3579                         ioa_cfg->hrrq[i].ioa_is_dead = 0;
3580                         spin_unlock(&ioa_cfg->hrrq[i]._lock);
3581                 }
3582                 wmb();
3583                 ioa_cfg->reset_retries = 0;
3584                 ioa_cfg->in_ioa_bringdown = 0;
3585                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3586         }
3587         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3588         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3589
3590         return result;
3591 }
3592
3593 static struct device_attribute ipr_ioa_state_attr = {
3594         .attr = {
3595                 .name =         "online_state",
3596                 .mode =         S_IRUGO | S_IWUSR,
3597         },
3598         .show = ipr_show_adapter_state,
3599         .store = ipr_store_adapter_state
3600 };
3601
3602 /**
3603  * ipr_store_reset_adapter - Reset the adapter
3604  * @dev:        device struct
3605  * @buf:        buffer
3606  * @count:      buffer size
3607  *
3608  * This function will reset the adapter.
3609  *
3610  * Return value:
3611  *      count on success / other on failure
3612  **/
3613 static ssize_t ipr_store_reset_adapter(struct device *dev,
3614                                        struct device_attribute *attr,
3615                                        const char *buf, size_t count)
3616 {
3617         struct Scsi_Host *shost = class_to_shost(dev);
3618         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3619         unsigned long lock_flags;
3620         int result = count;
3621
3622         if (!capable(CAP_SYS_ADMIN))
3623                 return -EACCES;
3624
3625         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3626         if (!ioa_cfg->in_reset_reload)
3627                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3628         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3629         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3630
3631         return result;
3632 }
3633
3634 static struct device_attribute ipr_ioa_reset_attr = {
3635         .attr = {
3636                 .name =         "reset_host",
3637                 .mode =         S_IWUSR,
3638         },
3639         .store = ipr_store_reset_adapter
3640 };
3641
3642 static int ipr_iopoll(struct irq_poll *iop, int budget);
3643  /**
3644  * ipr_show_iopoll_weight - Show ipr polling mode
3645  * @dev:        class device struct
3646  * @buf:        buffer
3647  *
3648  * Return value:
3649  *      number of bytes printed to buffer
3650  **/
3651 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3652                                    struct device_attribute *attr, char *buf)
3653 {
3654         struct Scsi_Host *shost = class_to_shost(dev);
3655         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3656         unsigned long lock_flags = 0;
3657         int len;
3658
3659         spin_lock_irqsave(shost->host_lock, lock_flags);
3660         len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3661         spin_unlock_irqrestore(shost->host_lock, lock_flags);
3662
3663         return len;
3664 }
3665
3666 /**
3667  * ipr_store_iopoll_weight - Change the adapter's polling mode
3668  * @dev:        class device struct
3669  * @buf:        buffer
3670  *
3671  * Return value:
3672  *      number of bytes printed to buffer
3673  **/
3674 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3675                                         struct device_attribute *attr,
3676                                         const char *buf, size_t count)
3677 {
3678         struct Scsi_Host *shost = class_to_shost(dev);
3679         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3680         unsigned long user_iopoll_weight;
3681         unsigned long lock_flags = 0;
3682         int i;
3683
3684         if (!ioa_cfg->sis64) {
3685                 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n");
3686                 return -EINVAL;
3687         }
3688         if (kstrtoul(buf, 10, &user_iopoll_weight))
3689                 return -EINVAL;
3690
3691         if (user_iopoll_weight > 256) {
3692                 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n");
3693                 return -EINVAL;
3694         }
3695
3696         if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3697                 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n");
3698                 return strlen(buf);
3699         }
3700
3701         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3702                 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3703                         irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
3704         }
3705
3706         spin_lock_irqsave(shost->host_lock, lock_flags);
3707         ioa_cfg->iopoll_weight = user_iopoll_weight;
3708         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3709                 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3710                         irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
3711                                         ioa_cfg->iopoll_weight, ipr_iopoll);
3712                 }
3713         }
3714         spin_unlock_irqrestore(shost->host_lock, lock_flags);
3715
3716         return strlen(buf);
3717 }
3718
3719 static struct device_attribute ipr_iopoll_weight_attr = {
3720         .attr = {
3721                 .name =         "iopoll_weight",
3722                 .mode =         S_IRUGO | S_IWUSR,
3723         },
3724         .show = ipr_show_iopoll_weight,
3725         .store = ipr_store_iopoll_weight
3726 };
3727
3728 /**
3729  * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3730  * @buf_len:            buffer length
3731  *
3732  * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3733  * list to use for microcode download
3734  *
3735  * Return value:
3736  *      pointer to sglist / NULL on failure
3737  **/
3738 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3739 {
3740         int sg_size, order, bsize_elem, num_elem, i, j;
3741         struct ipr_sglist *sglist;
3742         struct scatterlist *scatterlist;
3743         struct page *page;
3744
3745         /* Get the minimum size per scatter/gather element */
3746         sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3747
3748         /* Get the actual size per element */
3749         order = get_order(sg_size);
3750
3751         /* Determine the actual number of bytes per element */
3752         bsize_elem = PAGE_SIZE * (1 << order);
3753
3754         /* Determine the actual number of sg entries needed */
3755         if (buf_len % bsize_elem)
3756                 num_elem = (buf_len / bsize_elem) + 1;
3757         else
3758                 num_elem = buf_len / bsize_elem;
3759
3760         /* Allocate a scatter/gather list for the DMA */
3761         sglist = kzalloc(sizeof(struct ipr_sglist) +
3762                          (sizeof(struct scatterlist) * (num_elem - 1)),
3763                          GFP_KERNEL);
3764
3765         if (sglist == NULL) {
3766                 ipr_trace;
3767                 return NULL;
3768         }
3769
3770         scatterlist = sglist->scatterlist;
3771         sg_init_table(scatterlist, num_elem);
3772
3773         sglist->order = order;
3774         sglist->num_sg = num_elem;
3775
3776         /* Allocate a bunch of sg elements */
3777         for (i = 0; i < num_elem; i++) {
3778                 page = alloc_pages(GFP_KERNEL, order);
3779                 if (!page) {
3780                         ipr_trace;
3781
3782                         /* Free up what we already allocated */
3783                         for (j = i - 1; j >= 0; j--)
3784                                 __free_pages(sg_page(&scatterlist[j]), order);
3785                         kfree(sglist);
3786                         return NULL;
3787                 }
3788
3789                 sg_set_page(&scatterlist[i], page, 0, 0);
3790         }
3791
3792         return sglist;
3793 }
3794
3795 /**
3796  * ipr_free_ucode_buffer - Frees a microcode download buffer
3797  * @p_dnld:             scatter/gather list pointer
3798  *
3799  * Free a DMA'able ucode download buffer previously allocated with
3800  * ipr_alloc_ucode_buffer
3801  *
3802  * Return value:
3803  *      nothing
3804  **/
3805 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3806 {
3807         int i;
3808
3809         for (i = 0; i < sglist->num_sg; i++)
3810                 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3811
3812         kfree(sglist);
3813 }
3814
3815 /**
3816  * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3817  * @sglist:             scatter/gather list pointer
3818  * @buffer:             buffer pointer
3819  * @len:                buffer length
3820  *
3821  * Copy a microcode image from a user buffer into a buffer allocated by
3822  * ipr_alloc_ucode_buffer
3823  *
3824  * Return value:
3825  *      0 on success / other on failure
3826  **/
3827 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3828                                  u8 *buffer, u32 len)
3829 {
3830         int bsize_elem, i, result = 0;
3831         struct scatterlist *scatterlist;
3832         void *kaddr;
3833
3834         /* Determine the actual number of bytes per element */
3835         bsize_elem = PAGE_SIZE * (1 << sglist->order);
3836
3837         scatterlist = sglist->scatterlist;
3838
3839         for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3840                 struct page *page = sg_page(&scatterlist[i]);
3841
3842                 kaddr = kmap(page);
3843                 memcpy(kaddr, buffer, bsize_elem);
3844                 kunmap(page);
3845
3846                 scatterlist[i].length = bsize_elem;
3847
3848                 if (result != 0) {
3849                         ipr_trace;
3850                         return result;
3851                 }
3852         }
3853
3854         if (len % bsize_elem) {
3855                 struct page *page = sg_page(&scatterlist[i]);
3856
3857                 kaddr = kmap(page);
3858                 memcpy(kaddr, buffer, len % bsize_elem);
3859                 kunmap(page);
3860
3861                 scatterlist[i].length = len % bsize_elem;
3862         }
3863
3864         sglist->buffer_len = len;
3865         return result;
3866 }
3867
3868 /**
3869  * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3870  * @ipr_cmd:            ipr command struct
3871  * @sglist:             scatter/gather list
3872  *
3873  * Builds a microcode download IOA data list (IOADL).
3874  *
3875  **/
3876 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3877                                     struct ipr_sglist *sglist)
3878 {
3879         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3880         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3881         struct scatterlist *scatterlist = sglist->scatterlist;
3882         int i;
3883
3884         ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3885         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3886         ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3887
3888         ioarcb->ioadl_len =
3889                 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3890         for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3891                 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3892                 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3893                 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3894         }
3895
3896         ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3897 }
3898
3899 /**
3900  * ipr_build_ucode_ioadl - Build a microcode download IOADL
3901  * @ipr_cmd:    ipr command struct
3902  * @sglist:             scatter/gather list
3903  *
3904  * Builds a microcode download IOA data list (IOADL).
3905  *
3906  **/
3907 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3908                                   struct ipr_sglist *sglist)
3909 {
3910         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3911         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3912         struct scatterlist *scatterlist = sglist->scatterlist;
3913         int i;
3914
3915         ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3916         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3917         ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3918
3919         ioarcb->ioadl_len =
3920                 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3921
3922         for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3923                 ioadl[i].flags_and_data_len =
3924                         cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3925                 ioadl[i].address =
3926                         cpu_to_be32(sg_dma_address(&scatterlist[i]));
3927         }
3928
3929         ioadl[i-1].flags_and_data_len |=
3930                 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3931 }
3932
3933 /**
3934  * ipr_update_ioa_ucode - Update IOA's microcode
3935  * @ioa_cfg:    ioa config struct
3936  * @sglist:             scatter/gather list
3937  *
3938  * Initiate an adapter reset to update the IOA's microcode
3939  *
3940  * Return value:
3941  *      0 on success / -EIO on failure
3942  **/
3943 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3944                                 struct ipr_sglist *sglist)
3945 {
3946         unsigned long lock_flags;
3947
3948         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3949         while (ioa_cfg->in_reset_reload) {
3950                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3951                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3952                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3953         }
3954
3955         if (ioa_cfg->ucode_sglist) {
3956                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3957                 dev_err(&ioa_cfg->pdev->dev,
3958                         "Microcode download already in progress\n");
3959                 return -EIO;
3960         }
3961
3962         sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
3963                                         sglist->scatterlist, sglist->num_sg,
3964                                         DMA_TO_DEVICE);
3965
3966         if (!sglist->num_dma_sg) {
3967                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3968                 dev_err(&ioa_cfg->pdev->dev,
3969                         "Failed to map microcode download buffer!\n");
3970                 return -EIO;
3971         }
3972
3973         ioa_cfg->ucode_sglist = sglist;
3974         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3975         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3976         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3977
3978         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3979         ioa_cfg->ucode_sglist = NULL;
3980         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3981         return 0;
3982 }
3983
3984 /**
3985  * ipr_store_update_fw - Update the firmware on the adapter
3986  * @class_dev:  device struct
3987  * @buf:        buffer
3988  * @count:      buffer size
3989  *
3990  * This function will update the firmware on the adapter.
3991  *
3992  * Return value:
3993  *      count on success / other on failure
3994  **/
3995 static ssize_t ipr_store_update_fw(struct device *dev,
3996                                    struct device_attribute *attr,
3997                                    const char *buf, size_t count)
3998 {
3999         struct Scsi_Host *shost = class_to_shost(dev);
4000         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4001         struct ipr_ucode_image_header *image_hdr;
4002         const struct firmware *fw_entry;
4003         struct ipr_sglist *sglist;
4004         char fname[100];
4005         char *src;
4006         char *endline;
4007         int result, dnld_size;
4008
4009         if (!capable(CAP_SYS_ADMIN))
4010                 return -EACCES;
4011
4012         snprintf(fname, sizeof(fname), "%s", buf);
4013
4014         endline = strchr(fname, '\n');
4015         if (endline)
4016                 *endline = '\0';
4017
4018         if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4019                 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4020                 return -EIO;
4021         }
4022
4023         image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4024
4025         src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4026         dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4027         sglist = ipr_alloc_ucode_buffer(dnld_size);
4028
4029         if (!sglist) {
4030                 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4031                 release_firmware(fw_entry);
4032                 return -ENOMEM;
4033         }
4034
4035         result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4036
4037         if (result) {
4038                 dev_err(&ioa_cfg->pdev->dev,
4039                         "Microcode buffer copy to DMA buffer failed\n");
4040                 goto out;
4041         }
4042
4043         ipr_info("Updating microcode, please be patient.  This may take up to 30 minutes.\n");
4044
4045         result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4046
4047         if (!result)
4048                 result = count;
4049 out:
4050         ipr_free_ucode_buffer(sglist);
4051         release_firmware(fw_entry);
4052         return result;
4053 }
4054
4055 static struct device_attribute ipr_update_fw_attr = {
4056         .attr = {
4057                 .name =         "update_fw",
4058                 .mode =         S_IWUSR,
4059         },
4060         .store = ipr_store_update_fw
4061 };
4062
4063 /**
4064  * ipr_show_fw_type - Show the adapter's firmware type.
4065  * @dev:        class device struct
4066  * @buf:        buffer
4067  *
4068  * Return value:
4069  *      number of bytes printed to buffer
4070  **/
4071 static ssize_t ipr_show_fw_type(struct device *dev,
4072                                 struct device_attribute *attr, char *buf)
4073 {
4074         struct Scsi_Host *shost = class_to_shost(dev);
4075         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4076         unsigned long lock_flags = 0;
4077         int len;
4078
4079         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4080         len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4081         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4082         return len;
4083 }
4084
4085 static struct device_attribute ipr_ioa_fw_type_attr = {
4086         .attr = {
4087                 .name =         "fw_type",
4088                 .mode =         S_IRUGO,
4089         },
4090         .show = ipr_show_fw_type
4091 };
4092
4093 static struct device_attribute *ipr_ioa_attrs[] = {
4094         &ipr_fw_version_attr,
4095         &ipr_log_level_attr,
4096         &ipr_diagnostics_attr,
4097         &ipr_ioa_state_attr,
4098         &ipr_ioa_reset_attr,
4099         &ipr_update_fw_attr,
4100         &ipr_ioa_fw_type_attr,
4101         &ipr_iopoll_weight_attr,
4102         NULL,
4103 };
4104
4105 #ifdef CONFIG_SCSI_IPR_DUMP
4106 /**
4107  * ipr_read_dump - Dump the adapter
4108  * @filp:               open sysfs file
4109  * @kobj:               kobject struct
4110  * @bin_attr:           bin_attribute struct
4111  * @buf:                buffer
4112  * @off:                offset
4113  * @count:              buffer size
4114  *
4115  * Return value:
4116  *      number of bytes printed to buffer
4117  **/
4118 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4119                              struct bin_attribute *bin_attr,
4120                              char *buf, loff_t off, size_t count)
4121 {
4122         struct device *cdev = container_of(kobj, struct device, kobj);
4123         struct Scsi_Host *shost = class_to_shost(cdev);
4124         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4125         struct ipr_dump *dump;
4126         unsigned long lock_flags = 0;
4127         char *src;
4128         int len, sdt_end;
4129         size_t rc = count;
4130
4131         if (!capable(CAP_SYS_ADMIN))
4132                 return -EACCES;
4133
4134         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4135         dump = ioa_cfg->dump;
4136
4137         if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4138                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4139                 return 0;
4140         }
4141         kref_get(&dump->kref);
4142         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4143
4144         if (off > dump->driver_dump.hdr.len) {
4145                 kref_put(&dump->kref, ipr_release_dump);
4146                 return 0;
4147         }
4148
4149         if (off + count > dump->driver_dump.hdr.len) {
4150                 count = dump->driver_dump.hdr.len - off;
4151                 rc = count;
4152         }
4153
4154         if (count && off < sizeof(dump->driver_dump)) {
4155                 if (off + count > sizeof(dump->driver_dump))
4156                         len = sizeof(dump->driver_dump) - off;
4157                 else
4158                         len = count;
4159                 src = (u8 *)&dump->driver_dump + off;
4160                 memcpy(buf, src, len);
4161                 buf += len;
4162                 off += len;
4163                 count -= len;
4164         }
4165
4166         off -= sizeof(dump->driver_dump);
4167
4168         if (ioa_cfg->sis64)
4169                 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4170                           (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4171                            sizeof(struct ipr_sdt_entry));
4172         else
4173                 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4174                           (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4175
4176         if (count && off < sdt_end) {
4177                 if (off + count > sdt_end)
4178                         len = sdt_end - off;
4179                 else
4180                         len = count;
4181                 src = (u8 *)&dump->ioa_dump + off;
4182                 memcpy(buf, src, len);
4183                 buf += len;
4184                 off += len;
4185                 count -= len;
4186         }
4187
4188         off -= sdt_end;
4189
4190         while (count) {
4191                 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4192                         len = PAGE_ALIGN(off) - off;
4193                 else
4194                         len = count;
4195                 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4196                 src += off & ~PAGE_MASK;
4197                 memcpy(buf, src, len);
4198                 buf += len;
4199                 off += len;
4200                 count -= len;
4201         }
4202
4203         kref_put(&dump->kref, ipr_release_dump);
4204         return rc;
4205 }
4206
4207 /**
4208  * ipr_alloc_dump - Prepare for adapter dump
4209  * @ioa_cfg:    ioa config struct
4210  *
4211  * Return value:
4212  *      0 on success / other on failure
4213  **/
4214 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4215 {
4216         struct ipr_dump *dump;
4217         __be32 **ioa_data;
4218         unsigned long lock_flags = 0;
4219
4220         dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4221
4222         if (!dump) {
4223                 ipr_err("Dump memory allocation failed\n");
4224                 return -ENOMEM;
4225         }
4226
4227         if (ioa_cfg->sis64)
4228                 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4229         else
4230                 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4231
4232         if (!ioa_data) {
4233                 ipr_err("Dump memory allocation failed\n");
4234                 kfree(dump);
4235                 return -ENOMEM;
4236         }
4237
4238         dump->ioa_dump.ioa_data = ioa_data;
4239
4240         kref_init(&dump->kref);
4241         dump->ioa_cfg = ioa_cfg;
4242
4243         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4244
4245         if (INACTIVE != ioa_cfg->sdt_state) {
4246                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4247                 vfree(dump->ioa_dump.ioa_data);
4248                 kfree(dump);
4249                 return 0;
4250         }
4251
4252         ioa_cfg->dump = dump;
4253         ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4254         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4255                 ioa_cfg->dump_taken = 1;
4256                 schedule_work(&ioa_cfg->work_q);
4257         }
4258         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4259
4260         return 0;
4261 }
4262
4263 /**
4264  * ipr_free_dump - Free adapter dump memory
4265  * @ioa_cfg:    ioa config struct
4266  *
4267  * Return value:
4268  *      0 on success / other on failure
4269  **/
4270 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4271 {
4272         struct ipr_dump *dump;
4273         unsigned long lock_flags = 0;
4274
4275         ENTER;
4276
4277         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4278         dump = ioa_cfg->dump;
4279         if (!dump) {
4280                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4281                 return 0;
4282         }
4283
4284         ioa_cfg->dump = NULL;
4285         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4286
4287         kref_put(&dump->kref, ipr_release_dump);
4288
4289         LEAVE;
4290         return 0;
4291 }
4292
4293 /**
4294  * ipr_write_dump - Setup dump state of adapter
4295  * @filp:               open sysfs file
4296  * @kobj:               kobject struct
4297  * @bin_attr:           bin_attribute struct
4298  * @buf:                buffer
4299  * @off:                offset
4300  * @count:              buffer size
4301  *
4302  * Return value:
4303  *      number of bytes printed to buffer
4304  **/
4305 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4306                               struct bin_attribute *bin_attr,
4307                               char *buf, loff_t off, size_t count)
4308 {
4309         struct device *cdev = container_of(kobj, struct device, kobj);
4310         struct Scsi_Host *shost = class_to_shost(cdev);
4311         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4312         int rc;
4313
4314         if (!capable(CAP_SYS_ADMIN))
4315                 return -EACCES;
4316
4317         if (buf[0] == '1')
4318                 rc = ipr_alloc_dump(ioa_cfg);
4319         else if (buf[0] == '0')
4320                 rc = ipr_free_dump(ioa_cfg);
4321         else
4322                 return -EINVAL;
4323
4324         if (rc)
4325                 return rc;
4326         else
4327                 return count;
4328 }
4329
4330 static struct bin_attribute ipr_dump_attr = {
4331         .attr = {
4332                 .name = "dump",
4333                 .mode = S_IRUSR | S_IWUSR,
4334         },
4335         .size = 0,
4336         .read = ipr_read_dump,
4337         .write = ipr_write_dump
4338 };
4339 #else
4340 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4341 #endif
4342
4343 /**
4344  * ipr_change_queue_depth - Change the device's queue depth
4345  * @sdev:       scsi device struct
4346  * @qdepth:     depth to set
4347  * @reason:     calling context
4348  *
4349  * Return value:
4350  *      actual depth set
4351  **/
4352 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4353 {
4354         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4355         struct ipr_resource_entry *res;
4356         unsigned long lock_flags = 0;
4357
4358         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4359         res = (struct ipr_resource_entry *)sdev->hostdata;
4360
4361         if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4362                 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4363         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4364
4365         scsi_change_queue_depth(sdev, qdepth);
4366         return sdev->queue_depth;
4367 }
4368
4369 /**
4370  * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4371  * @dev:        device struct
4372  * @attr:       device attribute structure
4373  * @buf:        buffer
4374  *
4375  * Return value:
4376  *      number of bytes printed to buffer
4377  **/
4378 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4379 {
4380         struct scsi_device *sdev = to_scsi_device(dev);
4381         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4382         struct ipr_resource_entry *res;
4383         unsigned long lock_flags = 0;
4384         ssize_t len = -ENXIO;
4385
4386         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4387         res = (struct ipr_resource_entry *)sdev->hostdata;
4388         if (res)
4389                 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4390         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4391         return len;
4392 }
4393
4394 static struct device_attribute ipr_adapter_handle_attr = {
4395         .attr = {
4396                 .name =         "adapter_handle",
4397                 .mode =         S_IRUSR,
4398         },
4399         .show = ipr_show_adapter_handle
4400 };
4401
4402 /**
4403  * ipr_show_resource_path - Show the resource path or the resource address for
4404  *                          this device.
4405  * @dev:        device struct
4406  * @attr:       device attribute structure
4407  * @buf:        buffer
4408  *
4409  * Return value:
4410  *      number of bytes printed to buffer
4411  **/
4412 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4413 {
4414         struct scsi_device *sdev = to_scsi_device(dev);
4415         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4416         struct ipr_resource_entry *res;
4417         unsigned long lock_flags = 0;
4418         ssize_t len = -ENXIO;
4419         char buffer[IPR_MAX_RES_PATH_LENGTH];
4420
4421         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4422         res = (struct ipr_resource_entry *)sdev->hostdata;
4423         if (res && ioa_cfg->sis64)
4424                 len = snprintf(buf, PAGE_SIZE, "%s\n",
4425                                __ipr_format_res_path(res->res_path, buffer,
4426                                                      sizeof(buffer)));
4427         else if (res)
4428                 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4429                                res->bus, res->target, res->lun);
4430
4431         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4432         return len;
4433 }
4434
4435 static struct device_attribute ipr_resource_path_attr = {
4436         .attr = {
4437                 .name =         "resource_path",
4438                 .mode =         S_IRUGO,
4439         },
4440         .show = ipr_show_resource_path
4441 };
4442
4443 /**
4444  * ipr_show_device_id - Show the device_id for this device.
4445  * @dev:        device struct
4446  * @attr:       device attribute structure
4447  * @buf:        buffer
4448  *
4449  * Return value:
4450  *      number of bytes printed to buffer
4451  **/
4452 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4453 {
4454         struct scsi_device *sdev = to_scsi_device(dev);
4455         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4456         struct ipr_resource_entry *res;
4457         unsigned long lock_flags = 0;
4458         ssize_t len = -ENXIO;
4459
4460         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4461         res = (struct ipr_resource_entry *)sdev->hostdata;
4462         if (res && ioa_cfg->sis64)
4463                 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4464         else if (res)
4465                 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4466
4467         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4468         return len;
4469 }
4470
4471 static struct device_attribute ipr_device_id_attr = {
4472         .attr = {
4473                 .name =         "device_id",
4474                 .mode =         S_IRUGO,
4475         },
4476         .show = ipr_show_device_id
4477 };
4478
4479 /**
4480  * ipr_show_resource_type - Show the resource type for this device.
4481  * @dev:        device struct
4482  * @attr:       device attribute structure
4483  * @buf:        buffer
4484  *
4485  * Return value:
4486  *      number of bytes printed to buffer
4487  **/
4488 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4489 {
4490         struct scsi_device *sdev = to_scsi_device(dev);
4491         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4492         struct ipr_resource_entry *res;
4493         unsigned long lock_flags = 0;
4494         ssize_t len = -ENXIO;
4495
4496         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4497         res = (struct ipr_resource_entry *)sdev->hostdata;
4498
4499         if (res)
4500                 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4501
4502         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4503         return len;
4504 }
4505
4506 static struct device_attribute ipr_resource_type_attr = {
4507         .attr = {
4508                 .name =         "resource_type",
4509                 .mode =         S_IRUGO,
4510         },
4511         .show = ipr_show_resource_type
4512 };
4513
4514 /**
4515  * ipr_show_raw_mode - Show the adapter's raw mode
4516  * @dev:        class device struct
4517  * @buf:        buffer
4518  *
4519  * Return value:
4520  *      number of bytes printed to buffer
4521  **/
4522 static ssize_t ipr_show_raw_mode(struct device *dev,
4523                                  struct device_attribute *attr, char *buf)
4524 {
4525         struct scsi_device *sdev = to_scsi_device(dev);
4526         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4527         struct ipr_resource_entry *res;
4528         unsigned long lock_flags = 0;
4529         ssize_t len;
4530
4531         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4532         res = (struct ipr_resource_entry *)sdev->hostdata;
4533         if (res)
4534                 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4535         else
4536                 len = -ENXIO;
4537         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4538         return len;
4539 }
4540
4541 /**
4542  * ipr_store_raw_mode - Change the adapter's raw mode
4543  * @dev:        class device struct
4544  * @buf:        buffer
4545  *
4546  * Return value:
4547  *      number of bytes printed to buffer
4548  **/
4549 static ssize_t ipr_store_raw_mode(struct device *dev,
4550                                   struct device_attribute *attr,
4551                                   const char *buf, size_t count)
4552 {
4553         struct scsi_device *sdev = to_scsi_device(dev);
4554         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4555         struct ipr_resource_entry *res;
4556         unsigned long lock_flags = 0;
4557         ssize_t len;
4558
4559         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4560         res = (struct ipr_resource_entry *)sdev->hostdata;
4561         if (res) {
4562                 if (ipr_is_af_dasd_device(res)) {
4563                         res->raw_mode = simple_strtoul(buf, NULL, 10);
4564                         len = strlen(buf);
4565                         if (res->sdev)
4566                                 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4567                                         res->raw_mode ? "enabled" : "disabled");
4568                 } else
4569                         len = -EINVAL;
4570         } else
4571                 len = -ENXIO;
4572         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4573         return len;
4574 }
4575
4576 static struct device_attribute ipr_raw_mode_attr = {
4577         .attr = {
4578                 .name =         "raw_mode",
4579                 .mode =         S_IRUGO | S_IWUSR,
4580         },
4581         .show = ipr_show_raw_mode,
4582         .store = ipr_store_raw_mode
4583 };
4584
4585 static struct device_attribute *ipr_dev_attrs[] = {
4586         &ipr_adapter_handle_attr,
4587         &ipr_resource_path_attr,
4588         &ipr_device_id_attr,
4589         &ipr_resource_type_attr,
4590         &ipr_raw_mode_attr,
4591         NULL,
4592 };
4593
4594 /**
4595  * ipr_biosparam - Return the HSC mapping
4596  * @sdev:                       scsi device struct
4597  * @block_device:       block device pointer
4598  * @capacity:           capacity of the device
4599  * @parm:                       Array containing returned HSC values.
4600  *
4601  * This function generates the HSC parms that fdisk uses.
4602  * We want to make sure we return something that places partitions
4603  * on 4k boundaries for best performance with the IOA.
4604  *
4605  * Return value:
4606  *      0 on success
4607  **/
4608 static int ipr_biosparam(struct scsi_device *sdev,
4609                          struct block_device *block_device,
4610                          sector_t capacity, int *parm)
4611 {
4612         int heads, sectors;
4613         sector_t cylinders;
4614
4615         heads = 128;
4616         sectors = 32;
4617
4618         cylinders = capacity;
4619         sector_div(cylinders, (128 * 32));
4620
4621         /* return result */
4622         parm[0] = heads;
4623         parm[1] = sectors;
4624         parm[2] = cylinders;
4625
4626         return 0;
4627 }
4628
4629 /**
4630  * ipr_find_starget - Find target based on bus/target.
4631  * @starget:    scsi target struct
4632  *
4633  * Return value:
4634  *      resource entry pointer if found / NULL if not found
4635  **/
4636 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4637 {
4638         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4639         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4640         struct ipr_resource_entry *res;
4641
4642         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4643                 if ((res->bus == starget->channel) &&
4644                     (res->target == starget->id)) {
4645                         return res;
4646                 }
4647         }
4648
4649         return NULL;
4650 }
4651
4652 static struct ata_port_info sata_port_info;
4653
4654 /**
4655  * ipr_target_alloc - Prepare for commands to a SCSI target
4656  * @starget:    scsi target struct
4657  *
4658  * If the device is a SATA device, this function allocates an
4659  * ATA port with libata, else it does nothing.
4660  *
4661  * Return value:
4662  *      0 on success / non-0 on failure
4663  **/
4664 static int ipr_target_alloc(struct scsi_target *starget)
4665 {
4666         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4667         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4668         struct ipr_sata_port *sata_port;
4669         struct ata_port *ap;
4670         struct ipr_resource_entry *res;
4671         unsigned long lock_flags;
4672
4673         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4674         res = ipr_find_starget(starget);
4675         starget->hostdata = NULL;
4676
4677         if (res && ipr_is_gata(res)) {
4678                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4679                 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4680                 if (!sata_port)
4681                         return -ENOMEM;
4682
4683                 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4684                 if (ap) {
4685                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4686                         sata_port->ioa_cfg = ioa_cfg;
4687                         sata_port->ap = ap;
4688                         sata_port->res = res;
4689
4690                         res->sata_port = sata_port;
4691                         ap->private_data = sata_port;
4692                         starget->hostdata = sata_port;
4693                 } else {
4694                         kfree(sata_port);
4695                         return -ENOMEM;
4696                 }
4697         }
4698         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4699
4700         return 0;
4701 }
4702
4703 /**
4704  * ipr_target_destroy - Destroy a SCSI target
4705  * @starget:    scsi target struct
4706  *
4707  * If the device was a SATA device, this function frees the libata
4708  * ATA port, else it does nothing.
4709  *
4710  **/
4711 static void ipr_target_destroy(struct scsi_target *starget)
4712 {
4713         struct ipr_sata_port *sata_port = starget->hostdata;
4714         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4715         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4716
4717         if (ioa_cfg->sis64) {
4718                 if (!ipr_find_starget(starget)) {
4719                         if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4720                                 clear_bit(starget->id, ioa_cfg->array_ids);
4721                         else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4722                                 clear_bit(starget->id, ioa_cfg->vset_ids);
4723                         else if (starget->channel == 0)
4724                                 clear_bit(starget->id, ioa_cfg->target_ids);
4725                 }
4726         }
4727
4728         if (sata_port) {
4729                 starget->hostdata = NULL;
4730                 ata_sas_port_destroy(sata_port->ap);
4731                 kfree(sata_port);
4732         }
4733 }
4734
4735 /**
4736  * ipr_find_sdev - Find device based on bus/target/lun.
4737  * @sdev:       scsi device struct
4738  *
4739  * Return value:
4740  *      resource entry pointer if found / NULL if not found
4741  **/
4742 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4743 {
4744         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4745         struct ipr_resource_entry *res;
4746
4747         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4748                 if ((res->bus == sdev->channel) &&
4749                     (res->target == sdev->id) &&
4750                     (res->lun == sdev->lun))
4751                         return res;
4752         }
4753
4754         return NULL;
4755 }
4756
4757 /**
4758  * ipr_slave_destroy - Unconfigure a SCSI device
4759  * @sdev:       scsi device struct
4760  *
4761  * Return value:
4762  *      nothing
4763  **/
4764 static void ipr_slave_destroy(struct scsi_device *sdev)
4765 {
4766         struct ipr_resource_entry *res;
4767         struct ipr_ioa_cfg *ioa_cfg;
4768         unsigned long lock_flags = 0;
4769
4770         ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4771
4772         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4773         res = (struct ipr_resource_entry *) sdev->hostdata;
4774         if (res) {
4775                 if (res->sata_port)
4776                         res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4777                 sdev->hostdata = NULL;
4778                 res->sdev = NULL;
4779                 res->sata_port = NULL;
4780         }
4781         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4782 }
4783
4784 /**
4785  * ipr_slave_configure - Configure a SCSI device
4786  * @sdev:       scsi device struct
4787  *
4788  * This function configures the specified scsi device.
4789  *
4790  * Return value:
4791  *      0 on success
4792  **/
4793 static int ipr_slave_configure(struct scsi_device *sdev)
4794 {
4795         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4796         struct ipr_resource_entry *res;
4797         struct ata_port *ap = NULL;
4798         unsigned long lock_flags = 0;
4799         char buffer[IPR_MAX_RES_PATH_LENGTH];
4800
4801         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4802         res = sdev->hostdata;
4803         if (res) {
4804                 if (ipr_is_af_dasd_device(res))
4805                         sdev->type = TYPE_RAID;
4806                 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4807                         sdev->scsi_level = 4;
4808                         sdev->no_uld_attach = 1;
4809                 }
4810                 if (ipr_is_vset_device(res)) {
4811                         sdev->scsi_level = SCSI_SPC_3;
4812                         blk_queue_rq_timeout(sdev->request_queue,
4813                                              IPR_VSET_RW_TIMEOUT);
4814                         blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4815                 }
4816                 if (ipr_is_gata(res) && res->sata_port)
4817                         ap = res->sata_port->ap;
4818                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4819
4820                 if (ap) {
4821                         scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4822                         ata_sas_slave_configure(sdev, ap);
4823                 }
4824
4825                 if (ioa_cfg->sis64)
4826                         sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4827                                     ipr_format_res_path(ioa_cfg,
4828                                 res->res_path, buffer, sizeof(buffer)));
4829                 return 0;
4830         }
4831         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4832         return 0;
4833 }
4834
4835 /**
4836  * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4837  * @sdev:       scsi device struct
4838  *
4839  * This function initializes an ATA port so that future commands
4840  * sent through queuecommand will work.
4841  *
4842  * Return value:
4843  *      0 on success
4844  **/
4845 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4846 {
4847         struct ipr_sata_port *sata_port = NULL;
4848         int rc = -ENXIO;
4849
4850         ENTER;
4851         if (sdev->sdev_target)
4852                 sata_port = sdev->sdev_target->hostdata;
4853         if (sata_port) {
4854                 rc = ata_sas_port_init(sata_port->ap);
4855                 if (rc == 0)
4856                         rc = ata_sas_sync_probe(sata_port->ap);
4857         }
4858
4859         if (rc)
4860                 ipr_slave_destroy(sdev);
4861
4862         LEAVE;
4863         return rc;
4864 }
4865
4866 /**
4867  * ipr_slave_alloc - Prepare for commands to a device.
4868  * @sdev:       scsi device struct
4869  *
4870  * This function saves a pointer to the resource entry
4871  * in the scsi device struct if the device exists. We
4872  * can then use this pointer in ipr_queuecommand when
4873  * handling new commands.
4874  *
4875  * Return value:
4876  *      0 on success / -ENXIO if device does not exist
4877  **/
4878 static int ipr_slave_alloc(struct scsi_device *sdev)
4879 {
4880         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4881         struct ipr_resource_entry *res;
4882         unsigned long lock_flags;
4883         int rc = -ENXIO;
4884
4885         sdev->hostdata = NULL;
4886
4887         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4888
4889         res = ipr_find_sdev(sdev);
4890         if (res) {
4891                 res->sdev = sdev;
4892                 res->add_to_ml = 0;
4893                 res->in_erp = 0;
4894                 sdev->hostdata = res;
4895                 if (!ipr_is_naca_model(res))
4896                         res->needs_sync_complete = 1;
4897                 rc = 0;
4898                 if (ipr_is_gata(res)) {
4899                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4900                         return ipr_ata_slave_alloc(sdev);
4901                 }
4902         }
4903
4904         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4905
4906         return rc;
4907 }
4908
4909 /**
4910  * ipr_match_lun - Match function for specified LUN
4911  * @ipr_cmd:    ipr command struct
4912  * @device:             device to match (sdev)
4913  *
4914  * Returns:
4915  *      1 if command matches sdev / 0 if command does not match sdev
4916  **/
4917 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
4918 {
4919         if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
4920                 return 1;
4921         return 0;
4922 }
4923
4924 /**
4925  * ipr_wait_for_ops - Wait for matching commands to complete
4926  * @ipr_cmd:    ipr command struct
4927  * @device:             device to match (sdev)
4928  * @match:              match function to use
4929  *
4930  * Returns:
4931  *      SUCCESS / FAILED
4932  **/
4933 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
4934                             int (*match)(struct ipr_cmnd *, void *))
4935 {
4936         struct ipr_cmnd *ipr_cmd;
4937         int wait;
4938         unsigned long flags;
4939         struct ipr_hrr_queue *hrrq;
4940         signed long timeout = IPR_ABORT_TASK_TIMEOUT;
4941         DECLARE_COMPLETION_ONSTACK(comp);
4942
4943         ENTER;
4944         do {
4945                 wait = 0;
4946
4947                 for_each_hrrq(hrrq, ioa_cfg) {
4948                         spin_lock_irqsave(hrrq->lock, flags);
4949                         list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4950                                 if (match(ipr_cmd, device)) {
4951                                         ipr_cmd->eh_comp = &comp;
4952                                         wait++;
4953                                 }
4954                         }
4955                         spin_unlock_irqrestore(hrrq->lock, flags);
4956                 }
4957
4958                 if (wait) {
4959                         timeout = wait_for_completion_timeout(&comp, timeout);
4960
4961                         if (!timeout) {
4962                                 wait = 0;
4963
4964                                 for_each_hrrq(hrrq, ioa_cfg) {
4965                                         spin_lock_irqsave(hrrq->lock, flags);
4966                                         list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4967                                                 if (match(ipr_cmd, device)) {
4968                                                         ipr_cmd->eh_comp = NULL;
4969                                                         wait++;
4970                                                 }
4971                                         }
4972                                         spin_unlock_irqrestore(hrrq->lock, flags);
4973                                 }
4974
4975                                 if (wait)
4976                                         dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
4977                                 LEAVE;
4978                                 return wait ? FAILED : SUCCESS;
4979                         }
4980                 }
4981         } while (wait);
4982
4983         LEAVE;
4984         return SUCCESS;
4985 }
4986
4987 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
4988 {
4989         struct ipr_ioa_cfg *ioa_cfg;
4990         unsigned long lock_flags = 0;
4991         int rc = SUCCESS;
4992
4993         ENTER;
4994         ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
4995         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4996
4997         if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4998                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4999                 dev_err(&ioa_cfg->pdev->dev,
5000                         "Adapter being reset as a result of error recovery.\n");
5001
5002                 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5003                         ioa_cfg->sdt_state = GET_DUMP;
5004         }
5005
5006         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5007         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5008         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5009
5010         /* If we got hit with a host reset while we were already resetting
5011          the adapter for some reason, and the reset failed. */
5012         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5013                 ipr_trace;
5014                 rc = FAILED;
5015         }
5016
5017         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5018         LEAVE;
5019         return rc;
5020 }
5021
5022 /**
5023  * ipr_device_reset - Reset the device
5024  * @ioa_cfg:    ioa config struct
5025  * @res:                resource entry struct
5026  *
5027  * This function issues a device reset to the affected device.
5028  * If the device is a SCSI device, a LUN reset will be sent
5029  * to the device first. If that does not work, a target reset
5030  * will be sent. If the device is a SATA device, a PHY reset will
5031  * be sent.
5032  *
5033  * Return value:
5034  *      0 on success / non-zero on failure
5035  **/
5036 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5037                             struct ipr_resource_entry *res)
5038 {
5039         struct ipr_cmnd *ipr_cmd;
5040         struct ipr_ioarcb *ioarcb;
5041         struct ipr_cmd_pkt *cmd_pkt;
5042         struct ipr_ioarcb_ata_regs *regs;
5043         u32 ioasc;
5044
5045         ENTER;
5046         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5047         ioarcb = &ipr_cmd->ioarcb;
5048         cmd_pkt = &ioarcb->cmd_pkt;
5049
5050         if (ipr_cmd->ioa_cfg->sis64) {
5051                 regs = &ipr_cmd->i.ata_ioadl.regs;
5052                 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5053         } else
5054                 regs = &ioarcb->u.add_data.u.regs;
5055
5056         ioarcb->res_handle = res->res_handle;
5057         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5058         cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5059         if (ipr_is_gata(res)) {
5060                 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5061                 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5062                 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5063         }
5064
5065         ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5066         ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5067         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5068         if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5069                 if (ipr_cmd->ioa_cfg->sis64)
5070                         memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5071                                sizeof(struct ipr_ioasa_gata));
5072                 else
5073                         memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5074                                sizeof(struct ipr_ioasa_gata));
5075         }
5076
5077         LEAVE;
5078         return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5079 }
5080
5081 /**
5082  * ipr_sata_reset - Reset the SATA port
5083  * @link:       SATA link to reset
5084  * @classes:    class of the attached device
5085  *
5086  * This function issues a SATA phy reset to the affected ATA link.
5087  *
5088  * Return value:
5089  *      0 on success / non-zero on failure
5090  **/
5091 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5092                                 unsigned long deadline)
5093 {
5094         struct ipr_sata_port *sata_port = link->ap->private_data;
5095         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5096         struct ipr_resource_entry *res;
5097         unsigned long lock_flags = 0;
5098         int rc = -ENXIO;
5099
5100         ENTER;
5101         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5102         while (ioa_cfg->in_reset_reload) {
5103                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5104                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5105                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5106         }
5107
5108         res = sata_port->res;
5109         if (res) {
5110                 rc = ipr_device_reset(ioa_cfg, res);
5111                 *classes = res->ata_class;
5112         }
5113
5114         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5115         LEAVE;
5116         return rc;
5117 }
5118
5119 /**
5120  * ipr_eh_dev_reset - Reset the device
5121  * @scsi_cmd:   scsi command struct
5122  *
5123  * This function issues a device reset to the affected device.
5124  * A LUN reset will be sent to the device first. If that does
5125  * not work, a target reset will be sent.
5126  *
5127  * Return value:
5128  *      SUCCESS / FAILED
5129  **/
5130 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5131 {
5132         struct ipr_cmnd *ipr_cmd;
5133         struct ipr_ioa_cfg *ioa_cfg;
5134         struct ipr_resource_entry *res;
5135         struct ata_port *ap;
5136         int rc = 0;
5137         struct ipr_hrr_queue *hrrq;
5138
5139         ENTER;
5140         ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5141         res = scsi_cmd->device->hostdata;
5142
5143         if (!res)
5144                 return FAILED;
5145
5146         /*
5147          * If we are currently going through reset/reload, return failed. This will force the
5148          * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5149          * reset to complete
5150          */
5151         if (ioa_cfg->in_reset_reload)
5152                 return FAILED;
5153         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5154                 return FAILED;
5155
5156         for_each_hrrq(hrrq, ioa_cfg) {
5157                 spin_lock(&hrrq->_lock);
5158                 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5159                         if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5160                                 if (ipr_cmd->scsi_cmd)
5161                                         ipr_cmd->done = ipr_scsi_eh_done;
5162                                 if (ipr_cmd->qc)
5163                                         ipr_cmd->done = ipr_sata_eh_done;
5164                                 if (ipr_cmd->qc &&
5165                                     !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5166                                         ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5167                                         ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5168                                 }
5169                         }
5170                 }
5171                 spin_unlock(&hrrq->_lock);
5172         }
5173         res->resetting_device = 1;
5174         scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5175
5176         if (ipr_is_gata(res) && res->sata_port) {
5177                 ap = res->sata_port->ap;
5178                 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5179                 ata_std_error_handler(ap);
5180                 spin_lock_irq(scsi_cmd->device->host->host_lock);
5181
5182                 for_each_hrrq(hrrq, ioa_cfg) {
5183                         spin_lock(&hrrq->_lock);
5184                         list_for_each_entry(ipr_cmd,
5185                                             &hrrq->hrrq_pending_q, queue) {
5186                                 if (ipr_cmd->ioarcb.res_handle ==
5187                                     res->res_handle) {
5188                                         rc = -EIO;
5189                                         break;
5190                                 }
5191                         }
5192                         spin_unlock(&hrrq->_lock);
5193                 }
5194         } else
5195                 rc = ipr_device_reset(ioa_cfg, res);
5196         res->resetting_device = 0;
5197         res->reset_occurred = 1;
5198
5199         LEAVE;
5200         return rc ? FAILED : SUCCESS;
5201 }
5202
5203 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5204 {
5205         int rc;
5206         struct ipr_ioa_cfg *ioa_cfg;
5207
5208         ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5209
5210         spin_lock_irq(cmd->device->host->host_lock);
5211         rc = __ipr_eh_dev_reset(cmd);
5212         spin_unlock_irq(cmd->device->host->host_lock);
5213
5214         if (rc == SUCCESS)
5215                 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5216
5217         return rc;
5218 }
5219
5220 /**
5221  * ipr_bus_reset_done - Op done function for bus reset.
5222  * @ipr_cmd:    ipr command struct
5223  *
5224  * This function is the op done function for a bus reset
5225  *
5226  * Return value:
5227  *      none
5228  **/
5229 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5230 {
5231         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5232         struct ipr_resource_entry *res;
5233
5234         ENTER;
5235         if (!ioa_cfg->sis64)
5236                 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5237                         if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5238                                 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5239                                 break;
5240                         }
5241                 }
5242
5243         /*
5244          * If abort has not completed, indicate the reset has, else call the
5245          * abort's done function to wake the sleeping eh thread
5246          */
5247         if (ipr_cmd->sibling->sibling)
5248                 ipr_cmd->sibling->sibling = NULL;
5249         else
5250                 ipr_cmd->sibling->done(ipr_cmd->sibling);
5251
5252         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5253         LEAVE;
5254 }
5255
5256 /**
5257  * ipr_abort_timeout - An abort task has timed out
5258  * @ipr_cmd:    ipr command struct
5259  *
5260  * This function handles when an abort task times out. If this
5261  * happens we issue a bus reset since we have resources tied
5262  * up that must be freed before returning to the midlayer.
5263  *
5264  * Return value:
5265  *      none
5266  **/
5267 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5268 {
5269         struct ipr_cmnd *reset_cmd;
5270         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5271         struct ipr_cmd_pkt *cmd_pkt;
5272         unsigned long lock_flags = 0;
5273
5274         ENTER;
5275         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5276         if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5277                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5278                 return;
5279         }
5280
5281         sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5282         reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5283         ipr_cmd->sibling = reset_cmd;
5284         reset_cmd->sibling = ipr_cmd;
5285         reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5286         cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5287         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5288         cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5289         cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5290
5291         ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5292         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5293         LEAVE;
5294 }
5295
5296 /**
5297  * ipr_cancel_op - Cancel specified op
5298  * @scsi_cmd:   scsi command struct
5299  *
5300  * This function cancels specified op.
5301  *
5302  * Return value:
5303  *      SUCCESS / FAILED
5304  **/
5305 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5306 {
5307         struct ipr_cmnd *ipr_cmd;
5308         struct ipr_ioa_cfg *ioa_cfg;
5309         struct ipr_resource_entry *res;
5310         struct ipr_cmd_pkt *cmd_pkt;
5311         u32 ioasc, int_reg;
5312         int op_found = 0;
5313         struct ipr_hrr_queue *hrrq;
5314
5315         ENTER;
5316         ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5317         res = scsi_cmd->device->hostdata;
5318
5319         /* If we are currently going through reset/reload, return failed.
5320          * This will force the mid-layer to call ipr_eh_host_reset,
5321          * which will then go to sleep and wait for the reset to complete
5322          */
5323         if (ioa_cfg->in_reset_reload ||
5324             ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5325                 return FAILED;
5326         if (!res)
5327                 return FAILED;
5328
5329         /*
5330          * If we are aborting a timed out op, chances are that the timeout was caused
5331          * by a still not detected EEH error. In such cases, reading a register will
5332          * trigger the EEH recovery infrastructure.
5333          */
5334         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5335
5336         if (!ipr_is_gscsi(res))
5337                 return FAILED;
5338
5339         for_each_hrrq(hrrq, ioa_cfg) {
5340                 spin_lock(&hrrq->_lock);
5341                 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5342                         if (ipr_cmd->scsi_cmd == scsi_cmd) {
5343                                 ipr_cmd->done = ipr_scsi_eh_done;
5344                                 op_found = 1;
5345                                 break;
5346                         }
5347                 }
5348                 spin_unlock(&hrrq->_lock);
5349         }
5350
5351         if (!op_found)
5352                 return SUCCESS;
5353
5354         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5355         ipr_cmd->ioarcb.res_handle = res->res_handle;
5356         cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5357         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5358         cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5359         ipr_cmd->u.sdev = scsi_cmd->device;
5360
5361         scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5362                     scsi_cmd->cmnd[0]);
5363         ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5364         ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5365
5366         /*
5367          * If the abort task timed out and we sent a bus reset, we will get
5368          * one the following responses to the abort
5369          */
5370         if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5371                 ioasc = 0;
5372                 ipr_trace;
5373         }
5374
5375         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5376         if (!ipr_is_naca_model(res))
5377                 res->needs_sync_complete = 1;
5378
5379         LEAVE;
5380         return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5381 }
5382
5383 /**
5384  * ipr_eh_abort - Abort a single op
5385  * @scsi_cmd:   scsi command struct
5386  *
5387  * Return value:
5388  *      0 if scan in progress / 1 if scan is complete
5389  **/
5390 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5391 {
5392         unsigned long lock_flags;
5393         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5394         int rc = 0;
5395
5396         spin_lock_irqsave(shost->host_lock, lock_flags);
5397         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5398                 rc = 1;
5399         if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5400                 rc = 1;
5401         spin_unlock_irqrestore(shost->host_lock, lock_flags);
5402         return rc;
5403 }
5404
5405 /**
5406  * ipr_eh_host_reset - Reset the host adapter
5407  * @scsi_cmd:   scsi command struct
5408  *
5409  * Return value:
5410  *      SUCCESS / FAILED
5411  **/
5412 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5413 {
5414         unsigned long flags;
5415         int rc;
5416         struct ipr_ioa_cfg *ioa_cfg;
5417
5418         ENTER;
5419
5420         ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5421
5422         spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5423         rc = ipr_cancel_op(scsi_cmd);
5424         spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5425
5426         if (rc == SUCCESS)
5427                 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5428         LEAVE;
5429         return rc;
5430 }
5431
5432 /**
5433  * ipr_handle_other_interrupt - Handle "other" interrupts
5434  * @ioa_cfg:    ioa config struct
5435  * @int_reg:    interrupt register
5436  *
5437  * Return value:
5438  *      IRQ_NONE / IRQ_HANDLED
5439  **/
5440 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5441                                               u32 int_reg)
5442 {
5443         irqreturn_t rc = IRQ_HANDLED;
5444         u32 int_mask_reg;
5445
5446         int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5447         int_reg &= ~int_mask_reg;
5448
5449         /* If an interrupt on the adapter did not occur, ignore it.
5450          * Or in the case of SIS 64, check for a stage change interrupt.
5451          */
5452         if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5453                 if (ioa_cfg->sis64) {
5454                         int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5455                         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5456                         if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5457
5458                                 /* clear stage change */
5459                                 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5460                                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5461                                 list_del(&ioa_cfg->reset_cmd->queue);
5462                                 del_timer(&ioa_cfg->reset_cmd->timer);
5463                                 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5464                                 return IRQ_HANDLED;
5465                         }
5466                 }
5467
5468                 return IRQ_NONE;
5469         }
5470
5471         if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5472                 /* Mask the interrupt */
5473                 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5474                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5475
5476                 list_del(&ioa_cfg->reset_cmd->queue);
5477                 del_timer(&ioa_cfg->reset_cmd->timer);
5478                 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5479         } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5480                 if (ioa_cfg->clear_isr) {
5481                         if (ipr_debug && printk_ratelimit())
5482                                 dev_err(&ioa_cfg->pdev->dev,
5483                                         "Spurious interrupt detected. 0x%08X\n", int_reg);
5484                         writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5485                         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5486                         return IRQ_NONE;
5487                 }
5488         } else {
5489                 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5490                         ioa_cfg->ioa_unit_checked = 1;
5491                 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5492                         dev_err(&ioa_cfg->pdev->dev,
5493                                 "No Host RRQ. 0x%08X\n", int_reg);
5494                 else
5495                         dev_err(&ioa_cfg->pdev->dev,
5496                                 "Permanent IOA failure. 0x%08X\n", int_reg);
5497
5498                 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5499                         ioa_cfg->sdt_state = GET_DUMP;
5500
5501                 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5502                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5503         }
5504
5505         return rc;
5506 }
5507
5508 /**
5509  * ipr_isr_eh - Interrupt service routine error handler
5510  * @ioa_cfg:    ioa config struct
5511  * @msg:        message to log
5512  *
5513  * Return value:
5514  *      none
5515  **/
5516 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5517 {
5518         ioa_cfg->errors_logged++;
5519         dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5520
5521         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5522                 ioa_cfg->sdt_state = GET_DUMP;
5523
5524         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5525 }
5526
5527 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5528                                                 struct list_head *doneq)
5529 {
5530         u32 ioasc;
5531         u16 cmd_index;
5532         struct ipr_cmnd *ipr_cmd;
5533         struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5534         int num_hrrq = 0;
5535
5536         /* If interrupts are disabled, ignore the interrupt */
5537         if (!hrr_queue->allow_interrupts)
5538                 return 0;
5539
5540         while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5541                hrr_queue->toggle_bit) {
5542
5543                 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5544                              IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5545                              IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5546
5547                 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5548                              cmd_index < hrr_queue->min_cmd_id)) {
5549                         ipr_isr_eh(ioa_cfg,
5550                                 "Invalid response handle from IOA: ",
5551                                 cmd_index);
5552                         break;
5553                 }
5554
5555                 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5556                 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5557
5558                 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5559
5560                 list_move_tail(&ipr_cmd->queue, doneq);
5561
5562                 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5563                         hrr_queue->hrrq_curr++;
5564                 } else {
5565                         hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5566                         hrr_queue->toggle_bit ^= 1u;
5567                 }
5568                 num_hrrq++;
5569                 if (budget > 0 && num_hrrq >= budget)
5570                         break;
5571         }
5572
5573         return num_hrrq;
5574 }
5575
5576 static int ipr_iopoll(struct irq_poll *iop, int budget)
5577 {
5578         struct ipr_ioa_cfg *ioa_cfg;
5579         struct ipr_hrr_queue *hrrq;
5580         struct ipr_cmnd *ipr_cmd, *temp;
5581         unsigned long hrrq_flags;
5582         int completed_ops;
5583         LIST_HEAD(doneq);
5584
5585         hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5586         ioa_cfg = hrrq->ioa_cfg;
5587
5588         spin_lock_irqsave(hrrq->lock, hrrq_flags);
5589         completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5590
5591         if (completed_ops < budget)
5592                 irq_poll_complete(iop);
5593         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5594
5595         list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5596                 list_del(&ipr_cmd->queue);
5597                 del_timer(&ipr_cmd->timer);
5598                 ipr_cmd->fast_done(ipr_cmd);
5599         }
5600
5601         return completed_ops;
5602 }
5603
5604 /**
5605  * ipr_isr - Interrupt service routine
5606  * @irq:        irq number
5607  * @devp:       pointer to ioa config struct
5608  *
5609  * Return value:
5610  *      IRQ_NONE / IRQ_HANDLED
5611  **/
5612 static irqreturn_t ipr_isr(int irq, void *devp)
5613 {
5614         struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5615         struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5616         unsigned long hrrq_flags = 0;
5617         u32 int_reg = 0;
5618         int num_hrrq = 0;
5619         int irq_none = 0;
5620         struct ipr_cmnd *ipr_cmd, *temp;
5621         irqreturn_t rc = IRQ_NONE;
5622         LIST_HEAD(doneq);
5623
5624         spin_lock_irqsave(hrrq->lock, hrrq_flags);
5625         /* If interrupts are disabled, ignore the interrupt */
5626         if (!hrrq->allow_interrupts) {
5627                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5628                 return IRQ_NONE;
5629         }
5630
5631         while (1) {
5632                 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5633                         rc =  IRQ_HANDLED;
5634
5635                         if (!ioa_cfg->clear_isr)
5636                                 break;
5637
5638                         /* Clear the PCI interrupt */
5639                         num_hrrq = 0;
5640                         do {
5641                                 writel(IPR_PCII_HRRQ_UPDATED,
5642                                      ioa_cfg->regs.clr_interrupt_reg32);
5643                                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5644                         } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5645                                 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5646
5647                 } else if (rc == IRQ_NONE && irq_none == 0) {
5648                         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5649                         irq_none++;
5650                 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5651                            int_reg & IPR_PCII_HRRQ_UPDATED) {
5652                         ipr_isr_eh(ioa_cfg,
5653                                 "Error clearing HRRQ: ", num_hrrq);
5654                         rc = IRQ_HANDLED;
5655                         break;
5656                 } else
5657                         break;
5658         }
5659
5660         if (unlikely(rc == IRQ_NONE))
5661                 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5662
5663         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5664         list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5665                 list_del(&ipr_cmd->queue);
5666                 del_timer(&ipr_cmd->timer);
5667                 ipr_cmd->fast_done(ipr_cmd);
5668         }
5669         return rc;
5670 }
5671
5672 /**
5673  * ipr_isr_mhrrq - Interrupt service routine
5674  * @irq:        irq number
5675  * @devp:       pointer to ioa config struct
5676  *
5677  * Return value:
5678  *      IRQ_NONE / IRQ_HANDLED
5679  **/
5680 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5681 {
5682         struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5683         struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5684         unsigned long hrrq_flags = 0;
5685         struct ipr_cmnd *ipr_cmd, *temp;
5686         irqreturn_t rc = IRQ_NONE;
5687         LIST_HEAD(doneq);
5688
5689         spin_lock_irqsave(hrrq->lock, hrrq_flags);
5690
5691         /* If interrupts are disabled, ignore the interrupt */
5692         if (!hrrq->allow_interrupts) {
5693                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5694                 return IRQ_NONE;
5695         }
5696
5697         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5698                 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5699                        hrrq->toggle_bit) {
5700                         irq_poll_sched(&hrrq->iopoll);
5701                         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5702                         return IRQ_HANDLED;
5703                 }
5704         } else {
5705                 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5706                         hrrq->toggle_bit)
5707
5708                         if (ipr_process_hrrq(hrrq, -1, &doneq))
5709                                 rc =  IRQ_HANDLED;
5710         }
5711
5712         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5713
5714         list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5715                 list_del(&ipr_cmd->queue);
5716                 del_timer(&ipr_cmd->timer);
5717                 ipr_cmd->fast_done(ipr_cmd);
5718         }
5719         return rc;
5720 }
5721
5722 /**
5723  * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5724  * @ioa_cfg:    ioa config struct
5725  * @ipr_cmd:    ipr command struct
5726  *
5727  * Return value:
5728  *      0 on success / -1 on failure
5729  **/
5730 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5731                              struct ipr_cmnd *ipr_cmd)
5732 {
5733         int i, nseg;
5734         struct scatterlist *sg;
5735         u32 length;
5736         u32 ioadl_flags = 0;
5737         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5738         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5739         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5740
5741         length = scsi_bufflen(scsi_cmd);
5742         if (!length)
5743                 return 0;
5744
5745         nseg = scsi_dma_map(scsi_cmd);
5746         if (nseg < 0) {
5747                 if (printk_ratelimit())
5748                         dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5749                 return -1;
5750         }
5751
5752         ipr_cmd->dma_use_sg = nseg;
5753
5754         ioarcb->data_transfer_length = cpu_to_be32(length);
5755         ioarcb->ioadl_len =
5756                 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5757
5758         if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5759                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5760                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5761         } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5762                 ioadl_flags = IPR_IOADL_FLAGS_READ;
5763
5764         scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5765                 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5766                 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5767                 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5768         }
5769
5770         ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5771         return 0;
5772 }
5773
5774 /**
5775  * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5776  * @ioa_cfg:    ioa config struct
5777  * @ipr_cmd:    ipr command struct
5778  *
5779  * Return value:
5780  *      0 on success / -1 on failure
5781  **/
5782 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5783                            struct ipr_cmnd *ipr_cmd)
5784 {
5785         int i, nseg;
5786         struct scatterlist *sg;
5787         u32 length;
5788         u32 ioadl_flags = 0;
5789         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5790         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5791         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5792
5793         length = scsi_bufflen(scsi_cmd);
5794         if (!length)
5795                 return 0;
5796
5797         nseg = scsi_dma_map(scsi_cmd);
5798         if (nseg < 0) {
5799                 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5800                 return -1;
5801         }
5802
5803         ipr_cmd->dma_use_sg = nseg;
5804
5805         if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5806                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5807                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5808                 ioarcb->data_transfer_length = cpu_to_be32(length);
5809                 ioarcb->ioadl_len =
5810                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5811         } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5812                 ioadl_flags = IPR_IOADL_FLAGS_READ;
5813                 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5814                 ioarcb->read_ioadl_len =
5815                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5816         }
5817
5818         if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5819                 ioadl = ioarcb->u.add_data.u.ioadl;
5820                 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5821                                     offsetof(struct ipr_ioarcb, u.add_data));
5822                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5823         }
5824
5825         scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5826                 ioadl[i].flags_and_data_len =
5827                         cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5828                 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5829         }
5830
5831         ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5832         return 0;
5833 }
5834
5835 /**
5836  * ipr_erp_done - Process completion of ERP for a device
5837  * @ipr_cmd:            ipr command struct
5838  *
5839  * This function copies the sense buffer into the scsi_cmd
5840  * struct and pushes the scsi_done function.
5841  *
5842  * Return value:
5843  *      nothing
5844  **/
5845 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5846 {
5847         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5848         struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5849         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5850
5851         if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5852                 scsi_cmd->result |= (DID_ERROR << 16);
5853                 scmd_printk(KERN_ERR, scsi_cmd,
5854                             "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5855         } else {
5856                 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5857                        SCSI_SENSE_BUFFERSIZE);
5858         }
5859
5860         if (res) {
5861                 if (!ipr_is_naca_model(res))
5862                         res->needs_sync_complete = 1;
5863                 res->in_erp = 0;
5864         }
5865         scsi_dma_unmap(ipr_cmd->scsi_cmd);
5866         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5867         scsi_cmd->scsi_done(scsi_cmd);
5868 }
5869
5870 /**
5871  * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5872  * @ipr_cmd:    ipr command struct
5873  *
5874  * Return value:
5875  *      none
5876  **/
5877 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5878 {
5879         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5880         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5881         dma_addr_t dma_addr = ipr_cmd->dma_addr;
5882
5883         memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5884         ioarcb->data_transfer_length = 0;
5885         ioarcb->read_data_transfer_length = 0;
5886         ioarcb->ioadl_len = 0;
5887         ioarcb->read_ioadl_len = 0;
5888         ioasa->hdr.ioasc = 0;
5889         ioasa->hdr.residual_data_len = 0;
5890
5891         if (ipr_cmd->ioa_cfg->sis64)
5892                 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5893                         cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5894         else {
5895                 ioarcb->write_ioadl_addr =
5896                         cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5897                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5898         }
5899 }
5900
5901 /**
5902  * ipr_erp_request_sense - Send request sense to a device
5903  * @ipr_cmd:    ipr command struct
5904  *
5905  * This function sends a request sense to a device as a result
5906  * of a check condition.
5907  *
5908  * Return value:
5909  *      nothing
5910  **/
5911 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5912 {
5913         struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5914         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5915
5916         if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5917                 ipr_erp_done(ipr_cmd);
5918                 return;
5919         }
5920
5921         ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5922
5923         cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5924         cmd_pkt->cdb[0] = REQUEST_SENSE;
5925         cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5926         cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5927         cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5928         cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5929
5930         ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5931                        SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5932
5933         ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5934                    IPR_REQUEST_SENSE_TIMEOUT * 2);
5935 }
5936
5937 /**
5938  * ipr_erp_cancel_all - Send cancel all to a device
5939  * @ipr_cmd:    ipr command struct
5940  *
5941  * This function sends a cancel all to a device to clear the
5942  * queue. If we are running TCQ on the device, QERR is set to 1,
5943  * which means all outstanding ops have been dropped on the floor.
5944  * Cancel all will return them to us.
5945  *
5946  * Return value:
5947  *      nothing
5948  **/
5949 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5950 {
5951         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5952         struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5953         struct ipr_cmd_pkt *cmd_pkt;
5954
5955         res->in_erp = 1;
5956
5957         ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5958
5959         if (!scsi_cmd->device->simple_tags) {
5960                 ipr_erp_request_sense(ipr_cmd);
5961                 return;
5962         }
5963
5964         cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5965         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5966         cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5967
5968         ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5969                    IPR_CANCEL_ALL_TIMEOUT);
5970 }
5971
5972 /**
5973  * ipr_dump_ioasa - Dump contents of IOASA
5974  * @ioa_cfg:    ioa config struct
5975  * @ipr_cmd:    ipr command struct
5976  * @res:                resource entry struct
5977  *
5978  * This function is invoked by the interrupt handler when ops
5979  * fail. It will log the IOASA if appropriate. Only called
5980  * for GPDD ops.
5981  *
5982  * Return value:
5983  *      none
5984  **/
5985 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5986                            struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5987 {
5988         int i;
5989         u16 data_len;
5990         u32 ioasc, fd_ioasc;
5991         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5992         __be32 *ioasa_data = (__be32 *)ioasa;
5993         int error_index;
5994
5995         ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5996         fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5997
5998         if (0 == ioasc)
5999                 return;
6000
6001         if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
6002                 return;
6003
6004         if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6005                 error_index = ipr_get_error(fd_ioasc);
6006         else
6007                 error_index = ipr_get_error(ioasc);
6008
6009         if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6010                 /* Don't log an error if the IOA already logged one */
6011                 if (ioasa->hdr.ilid != 0)
6012                         return;
6013
6014                 if (!ipr_is_gscsi(res))
6015                         return;
6016
6017                 if (ipr_error_table[error_index].log_ioasa == 0)
6018                         return;
6019         }
6020
6021         ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6022
6023         data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6024         if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6025                 data_len = sizeof(struct ipr_ioasa64);
6026         else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6027                 data_len = sizeof(struct ipr_ioasa);
6028
6029         ipr_err("IOASA Dump:\n");
6030
6031         for (i = 0; i < data_len / 4; i += 4) {
6032                 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6033                         be32_to_cpu(ioasa_data[i]),
6034                         be32_to_cpu(ioasa_data[i+1]),
6035                         be32_to_cpu(ioasa_data[i+2]),
6036                         be32_to_cpu(ioasa_data[i+3]));
6037         }
6038 }
6039
6040 /**
6041  * ipr_gen_sense - Generate SCSI sense data from an IOASA
6042  * @ioasa:              IOASA
6043  * @sense_buf:  sense data buffer
6044  *
6045  * Return value:
6046  *      none
6047  **/
6048 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6049 {
6050         u32 failing_lba;
6051         u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6052         struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6053         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6054         u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6055
6056         memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6057
6058         if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6059                 return;
6060
6061         ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6062
6063         if (ipr_is_vset_device(res) &&
6064             ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6065             ioasa->u.vset.failing_lba_hi != 0) {
6066                 sense_buf[0] = 0x72;
6067                 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6068                 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6069                 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6070
6071                 sense_buf[7] = 12;
6072                 sense_buf[8] = 0;
6073                 sense_buf[9] = 0x0A;
6074                 sense_buf[10] = 0x80;
6075
6076                 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6077
6078                 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6079                 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6080                 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6081                 sense_buf[15] = failing_lba & 0x000000ff;
6082
6083                 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6084
6085                 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6086                 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6087                 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6088                 sense_buf[19] = failing_lba & 0x000000ff;
6089         } else {
6090                 sense_buf[0] = 0x70;
6091                 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6092                 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6093                 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6094
6095                 /* Illegal request */
6096                 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6097                     (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6098                         sense_buf[7] = 10;      /* additional length */
6099
6100                         /* IOARCB was in error */
6101                         if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6102                                 sense_buf[15] = 0xC0;
6103                         else    /* Parameter data was invalid */
6104                                 sense_buf[15] = 0x80;
6105
6106                         sense_buf[16] =
6107                             ((IPR_FIELD_POINTER_MASK &
6108                               be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6109                         sense_buf[17] =
6110                             (IPR_FIELD_POINTER_MASK &
6111                              be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6112                 } else {
6113                         if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6114                                 if (ipr_is_vset_device(res))
6115                                         failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6116                                 else
6117                                         failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6118
6119                                 sense_buf[0] |= 0x80;   /* Or in the Valid bit */
6120                                 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6121                                 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6122                                 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6123                                 sense_buf[6] = failing_lba & 0x000000ff;
6124                         }
6125
6126                         sense_buf[7] = 6;       /* additional length */
6127                 }
6128         }
6129 }
6130
6131 /**
6132  * ipr_get_autosense - Copy autosense data to sense buffer
6133  * @ipr_cmd:    ipr command struct
6134  *
6135  * This function copies the autosense buffer to the buffer
6136  * in the scsi_cmd, if there is autosense available.
6137  *
6138  * Return value:
6139  *      1 if autosense was available / 0 if not
6140  **/
6141 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6142 {
6143         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6144         struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6145
6146         if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6147                 return 0;
6148
6149         if (ipr_cmd->ioa_cfg->sis64)
6150                 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6151                        min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6152                            SCSI_SENSE_BUFFERSIZE));
6153         else
6154                 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6155                        min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6156                            SCSI_SENSE_BUFFERSIZE));
6157         return 1;
6158 }
6159
6160 /**
6161  * ipr_erp_start - Process an error response for a SCSI op
6162  * @ioa_cfg:    ioa config struct
6163  * @ipr_cmd:    ipr command struct
6164  *
6165  * This function determines whether or not to initiate ERP
6166  * on the affected device.
6167  *
6168  * Return value:
6169  *      nothing
6170  **/
6171 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6172                               struct ipr_cmnd *ipr_cmd)
6173 {
6174         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6175         struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6176         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6177         u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6178
6179         if (!res) {
6180                 ipr_scsi_eh_done(ipr_cmd);
6181                 return;
6182         }
6183
6184         if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6185                 ipr_gen_sense(ipr_cmd);
6186
6187         ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6188
6189         switch (masked_ioasc) {
6190         case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6191                 if (ipr_is_naca_model(res))
6192                         scsi_cmd->result |= (DID_ABORT << 16);
6193                 else
6194                         scsi_cmd->result |= (DID_IMM_RETRY << 16);
6195                 break;
6196         case IPR_IOASC_IR_RESOURCE_HANDLE:
6197         case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6198                 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6199                 break;
6200         case IPR_IOASC_HW_SEL_TIMEOUT:
6201                 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6202                 if (!ipr_is_naca_model(res))
6203                         res->needs_sync_complete = 1;
6204                 break;
6205         case IPR_IOASC_SYNC_REQUIRED:
6206                 if (!res->in_erp)
6207                         res->needs_sync_complete = 1;
6208                 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6209                 break;
6210         case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6211         case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6212                 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6213                 break;
6214         case IPR_IOASC_BUS_WAS_RESET:
6215         case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6216                 /*
6217                  * Report the bus reset and ask for a retry. The device
6218                  * will give CC/UA the next command.
6219                  */
6220                 if (!res->resetting_device)
6221                         scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6222                 scsi_cmd->result |= (DID_ERROR << 16);
6223                 if (!ipr_is_naca_model(res))
6224                         res->needs_sync_complete = 1;
6225                 break;
6226         case IPR_IOASC_HW_DEV_BUS_STATUS:
6227                 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6228                 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6229                         if (!ipr_get_autosense(ipr_cmd)) {
6230                                 if (!ipr_is_naca_model(res)) {
6231                                         ipr_erp_cancel_all(ipr_cmd);
6232                                         return;
6233                                 }
6234                         }
6235                 }
6236                 if (!ipr_is_naca_model(res))
6237                         res->needs_sync_complete = 1;
6238                 break;
6239         case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6240                 break;
6241         case IPR_IOASC_IR_NON_OPTIMIZED:
6242                 if (res->raw_mode) {
6243                         res->raw_mode = 0;
6244                         scsi_cmd->result |= (DID_IMM_RETRY << 16);
6245                 } else
6246                         scsi_cmd->result |= (DID_ERROR << 16);
6247                 break;
6248         default:
6249                 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6250                         scsi_cmd->result |= (DID_ERROR << 16);
6251                 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6252                         res->needs_sync_complete = 1;
6253                 break;
6254         }
6255
6256         scsi_dma_unmap(ipr_cmd->scsi_cmd);
6257         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6258         scsi_cmd->scsi_done(scsi_cmd);
6259 }
6260
6261 /**
6262  * ipr_scsi_done - mid-layer done function
6263  * @ipr_cmd:    ipr command struct
6264  *
6265  * This function is invoked by the interrupt handler for
6266  * ops generated by the SCSI mid-layer
6267  *
6268  * Return value:
6269  *      none
6270  **/
6271 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6272 {
6273         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6274         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6275         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6276         unsigned long lock_flags;
6277
6278         scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6279
6280         if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6281                 scsi_dma_unmap(scsi_cmd);
6282
6283                 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6284                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6285                 scsi_cmd->scsi_done(scsi_cmd);
6286                 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6287         } else {
6288                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6289                 spin_lock(&ipr_cmd->hrrq->_lock);
6290                 ipr_erp_start(ioa_cfg, ipr_cmd);
6291                 spin_unlock(&ipr_cmd->hrrq->_lock);
6292                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6293         }
6294 }
6295
6296 /**
6297  * ipr_queuecommand - Queue a mid-layer request
6298  * @shost:              scsi host struct
6299  * @scsi_cmd:   scsi command struct
6300  *
6301  * This function queues a request generated by the mid-layer.
6302  *
6303  * Return value:
6304  *      0 on success
6305  *      SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6306  *      SCSI_MLQUEUE_HOST_BUSY if host is busy
6307  **/
6308 static int ipr_queuecommand(struct Scsi_Host *shost,
6309                             struct scsi_cmnd *scsi_cmd)
6310 {
6311         struct ipr_ioa_cfg *ioa_cfg;
6312         struct ipr_resource_entry *res;
6313         struct ipr_ioarcb *ioarcb;
6314         struct ipr_cmnd *ipr_cmd;
6315         unsigned long hrrq_flags, lock_flags;
6316         int rc;
6317         struct ipr_hrr_queue *hrrq;
6318         int hrrq_id;
6319
6320         ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6321
6322         scsi_cmd->result = (DID_OK << 16);
6323         res = scsi_cmd->device->hostdata;
6324
6325         if (ipr_is_gata(res) && res->sata_port) {
6326                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6327                 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6328                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6329                 return rc;
6330         }
6331
6332         hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6333         hrrq = &ioa_cfg->hrrq[hrrq_id];
6334
6335         spin_lock_irqsave(hrrq->lock, hrrq_flags);
6336         /*
6337          * We are currently blocking all devices due to a host reset
6338          * We have told the host to stop giving us new requests, but
6339          * ERP ops don't count. FIXME
6340          */
6341         if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6342                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6343                 return SCSI_MLQUEUE_HOST_BUSY;
6344         }
6345
6346         /*
6347          * FIXME - Create scsi_set_host_offline interface
6348          *  and the ioa_is_dead check can be removed
6349          */
6350         if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6351                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6352                 goto err_nodev;
6353         }
6354
6355         ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6356         if (ipr_cmd == NULL) {
6357                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6358                 return SCSI_MLQUEUE_HOST_BUSY;
6359         }
6360         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6361
6362         ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6363         ioarcb = &ipr_cmd->ioarcb;
6364
6365         memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6366         ipr_cmd->scsi_cmd = scsi_cmd;
6367         ipr_cmd->done = ipr_scsi_eh_done;
6368
6369         if (ipr_is_gscsi(res)) {
6370                 if (scsi_cmd->underflow == 0)
6371                         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6372
6373                 if (res->reset_occurred) {
6374                         res->reset_occurred = 0;
6375                         ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6376                 }
6377         }
6378
6379         if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6380                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6381
6382                 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6383                 if (scsi_cmd->flags & SCMD_TAGGED)
6384                         ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6385                 else
6386                         ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6387         }
6388
6389         if (scsi_cmd->cmnd[0] >= 0xC0 &&
6390             (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6391                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6392         }
6393         if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6394                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6395
6396                 if (scsi_cmd->underflow == 0)
6397                         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6398         }
6399
6400         if (ioa_cfg->sis64)
6401                 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6402         else
6403                 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6404
6405         spin_lock_irqsave(hrrq->lock, hrrq_flags);
6406         if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6407                 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6408                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6409                 if (!rc)
6410                         scsi_dma_unmap(scsi_cmd);
6411                 return SCSI_MLQUEUE_HOST_BUSY;
6412         }
6413
6414         if (unlikely(hrrq->ioa_is_dead)) {
6415                 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6416                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6417                 scsi_dma_unmap(scsi_cmd);
6418                 goto err_nodev;
6419         }
6420
6421         ioarcb->res_handle = res->res_handle;
6422         if (res->needs_sync_complete) {
6423                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6424                 res->needs_sync_complete = 0;
6425         }
6426         list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6427         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6428         ipr_send_command(ipr_cmd);
6429         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6430         return 0;
6431
6432 err_nodev:
6433         spin_lock_irqsave(hrrq->lock, hrrq_flags);
6434         memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6435         scsi_cmd->result = (DID_NO_CONNECT << 16);
6436         scsi_cmd->scsi_done(scsi_cmd);
6437         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6438         return 0;
6439 }
6440
6441 /**
6442  * ipr_ioctl - IOCTL handler
6443  * @sdev:       scsi device struct
6444  * @cmd:        IOCTL cmd
6445  * @arg:        IOCTL arg
6446  *
6447  * Return value:
6448  *      0 on success / other on failure
6449  **/
6450 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6451 {
6452         struct ipr_resource_entry *res;
6453
6454         res = (struct ipr_resource_entry *)sdev->hostdata;
6455         if (res && ipr_is_gata(res)) {
6456                 if (cmd == HDIO_GET_IDENTITY)
6457                         return -ENOTTY;
6458                 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6459         }
6460
6461         return -EINVAL;
6462 }
6463
6464 /**
6465  * ipr_info - Get information about the card/driver
6466  * @scsi_host:  scsi host struct
6467  *
6468  * Return value:
6469  *      pointer to buffer with description string
6470  **/
6471 static const char *ipr_ioa_info(struct Scsi_Host *host)
6472 {
6473         static char buffer[512];
6474         struct ipr_ioa_cfg *ioa_cfg;
6475         unsigned long lock_flags = 0;
6476
6477         ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6478
6479         spin_lock_irqsave(host->host_lock, lock_flags);
6480         sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6481         spin_unlock_irqrestore(host->host_lock, lock_flags);
6482
6483         return buffer;
6484 }
6485
6486 static struct scsi_host_template driver_template = {
6487         .module = THIS_MODULE,
6488         .name = "IPR",
6489         .info = ipr_ioa_info,
6490         .ioctl = ipr_ioctl,
6491         .queuecommand = ipr_queuecommand,
6492         .eh_abort_handler = ipr_eh_abort,
6493         .eh_device_reset_handler = ipr_eh_dev_reset,
6494         .eh_host_reset_handler = ipr_eh_host_reset,
6495         .slave_alloc = ipr_slave_alloc,
6496         .slave_configure = ipr_slave_configure,
6497         .slave_destroy = ipr_slave_destroy,
6498         .scan_finished = ipr_scan_finished,
6499         .target_alloc = ipr_target_alloc,
6500         .target_destroy = ipr_target_destroy,
6501         .change_queue_depth = ipr_change_queue_depth,
6502         .bios_param = ipr_biosparam,
6503         .can_queue = IPR_MAX_COMMANDS,
6504         .this_id = -1,
6505         .sg_tablesize = IPR_MAX_SGLIST,
6506         .max_sectors = IPR_IOA_MAX_SECTORS,
6507         .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6508         .use_clustering = ENABLE_CLUSTERING,
6509         .shost_attrs = ipr_ioa_attrs,
6510         .sdev_attrs = ipr_dev_attrs,
6511         .proc_name = IPR_NAME,
6512 };
6513
6514 /**
6515  * ipr_ata_phy_reset - libata phy_reset handler
6516  * @ap:         ata port to reset
6517  *
6518  **/
6519 static void ipr_ata_phy_reset(struct ata_port *ap)
6520 {
6521         unsigned long flags;
6522         struct ipr_sata_port *sata_port = ap->private_data;
6523         struct ipr_resource_entry *res = sata_port->res;
6524         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6525         int rc;
6526
6527         ENTER;
6528         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6529         while (ioa_cfg->in_reset_reload) {
6530                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6531                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6532                 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6533         }
6534
6535         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6536                 goto out_unlock;
6537
6538         rc = ipr_device_reset(ioa_cfg, res);
6539
6540         if (rc) {
6541                 ap->link.device[0].class = ATA_DEV_NONE;
6542                 goto out_unlock;
6543         }
6544
6545         ap->link.device[0].class = res->ata_class;
6546         if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6547                 ap->link.device[0].class = ATA_DEV_NONE;
6548
6549 out_unlock:
6550         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6551         LEAVE;
6552 }
6553
6554 /**
6555  * ipr_ata_post_internal - Cleanup after an internal command
6556  * @qc: ATA queued command
6557  *
6558  * Return value:
6559  *      none
6560  **/
6561 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6562 {
6563         struct ipr_sata_port *sata_port = qc->ap->private_data;
6564         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6565         struct ipr_cmnd *ipr_cmd;
6566         struct ipr_hrr_queue *hrrq;
6567         unsigned long flags;
6568
6569         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6570         while (ioa_cfg->in_reset_reload) {
6571                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6572                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6573                 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6574         }
6575
6576         for_each_hrrq(hrrq, ioa_cfg) {
6577                 spin_lock(&hrrq->_lock);
6578                 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6579                         if (ipr_cmd->qc == qc) {
6580                                 ipr_device_reset(ioa_cfg, sata_port->res);
6581                                 break;
6582                         }
6583                 }
6584                 spin_unlock(&hrrq->_lock);
6585         }
6586         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6587 }
6588
6589 /**
6590  * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6591  * @regs:       destination
6592  * @tf: source ATA taskfile
6593  *
6594  * Return value:
6595  *      none
6596  **/
6597 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6598                              struct ata_taskfile *tf)
6599 {
6600         regs->feature = tf->feature;
6601         regs->nsect = tf->nsect;
6602         regs->lbal = tf->lbal;
6603         regs->lbam = tf->lbam;
6604         regs->lbah = tf->lbah;
6605         regs->device = tf->device;
6606         regs->command = tf->command;
6607         regs->hob_feature = tf->hob_feature;
6608         regs->hob_nsect = tf->hob_nsect;
6609         regs->hob_lbal = tf->hob_lbal;
6610         regs->hob_lbam = tf->hob_lbam;
6611         regs->hob_lbah = tf->hob_lbah;
6612         regs->ctl = tf->ctl;
6613 }
6614
6615 /**
6616  * ipr_sata_done - done function for SATA commands
6617  * @ipr_cmd:    ipr command struct
6618  *
6619  * This function is invoked by the interrupt handler for
6620  * ops generated by the SCSI mid-layer to SATA devices
6621  *
6622  * Return value:
6623  *      none
6624  **/
6625 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6626 {
6627         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6628         struct ata_queued_cmd *qc = ipr_cmd->qc;
6629         struct ipr_sata_port *sata_port = qc->ap->private_data;
6630         struct ipr_resource_entry *res = sata_port->res;
6631         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6632
6633         spin_lock(&ipr_cmd->hrrq->_lock);
6634         if (ipr_cmd->ioa_cfg->sis64)
6635                 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6636                        sizeof(struct ipr_ioasa_gata));
6637         else
6638                 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6639                        sizeof(struct ipr_ioasa_gata));
6640         ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6641
6642         if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6643                 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6644
6645         if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6646                 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6647         else
6648                 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6649         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6650         spin_unlock(&ipr_cmd->hrrq->_lock);
6651         ata_qc_complete(qc);
6652 }
6653
6654 /**
6655  * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6656  * @ipr_cmd:    ipr command struct
6657  * @qc:         ATA queued command
6658  *
6659  **/
6660 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6661                                   struct ata_queued_cmd *qc)
6662 {
6663         u32 ioadl_flags = 0;
6664         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6665         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6666         struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6667         int len = qc->nbytes;
6668         struct scatterlist *sg;
6669         unsigned int si;
6670         dma_addr_t dma_addr = ipr_cmd->dma_addr;
6671
6672         if (len == 0)
6673                 return;
6674
6675         if (qc->dma_dir == DMA_TO_DEVICE) {
6676                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6677                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6678         } else if (qc->dma_dir == DMA_FROM_DEVICE)
6679                 ioadl_flags = IPR_IOADL_FLAGS_READ;
6680
6681         ioarcb->data_transfer_length = cpu_to_be32(len);
6682         ioarcb->ioadl_len =
6683                 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6684         ioarcb->u.sis64_addr_data.data_ioadl_addr =
6685                 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6686
6687         for_each_sg(qc->sg, sg, qc->n_elem, si) {
6688                 ioadl64->flags = cpu_to_be32(ioadl_flags);
6689                 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6690                 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6691
6692                 last_ioadl64 = ioadl64;
6693                 ioadl64++;
6694         }
6695
6696         if (likely(last_ioadl64))
6697                 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6698 }
6699
6700 /**
6701  * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6702  * @ipr_cmd:    ipr command struct
6703  * @qc:         ATA queued command
6704  *
6705  **/
6706 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6707                                 struct ata_queued_cmd *qc)
6708 {
6709         u32 ioadl_flags = 0;
6710         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6711         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6712         struct ipr_ioadl_desc *last_ioadl = NULL;
6713         int len = qc->nbytes;
6714         struct scatterlist *sg;
6715         unsigned int si;
6716
6717         if (len == 0)
6718                 return;
6719
6720         if (qc->dma_dir == DMA_TO_DEVICE) {
6721                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6722                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6723                 ioarcb->data_transfer_length = cpu_to_be32(len);
6724                 ioarcb->ioadl_len =
6725                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6726         } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6727                 ioadl_flags = IPR_IOADL_FLAGS_READ;
6728                 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6729                 ioarcb->read_ioadl_len =
6730                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6731         }
6732
6733         for_each_sg(qc->sg, sg, qc->n_elem, si) {
6734                 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6735                 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6736
6737                 last_ioadl = ioadl;
6738                 ioadl++;
6739         }
6740
6741         if (likely(last_ioadl))
6742                 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6743 }
6744
6745 /**
6746  * ipr_qc_defer - Get a free ipr_cmd
6747  * @qc: queued command
6748  *
6749  * Return value:
6750  *      0 if success
6751  **/
6752 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6753 {
6754         struct ata_port *ap = qc->ap;
6755         struct ipr_sata_port *sata_port = ap->private_data;
6756         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6757         struct ipr_cmnd *ipr_cmd;
6758         struct ipr_hrr_queue *hrrq;
6759         int hrrq_id;
6760
6761         hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6762         hrrq = &ioa_cfg->hrrq[hrrq_id];
6763
6764         qc->lldd_task = NULL;
6765         spin_lock(&hrrq->_lock);
6766         if (unlikely(hrrq->ioa_is_dead)) {
6767                 spin_unlock(&hrrq->_lock);
6768                 return 0;
6769         }
6770
6771         if (unlikely(!hrrq->allow_cmds)) {
6772                 spin_unlock(&hrrq->_lock);
6773                 return ATA_DEFER_LINK;
6774         }
6775
6776         ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6777         if (ipr_cmd == NULL) {
6778                 spin_unlock(&hrrq->_lock);
6779                 return ATA_DEFER_LINK;
6780         }
6781
6782         qc->lldd_task = ipr_cmd;
6783         spin_unlock(&hrrq->_lock);
6784         return 0;
6785 }
6786
6787 /**
6788  * ipr_qc_issue - Issue a SATA qc to a device
6789  * @qc: queued command
6790  *
6791  * Return value:
6792  *      0 if success
6793  **/
6794 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6795 {
6796         struct ata_port *ap = qc->ap;
6797         struct ipr_sata_port *sata_port = ap->private_data;
6798         struct ipr_resource_entry *res = sata_port->res;
6799         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6800         struct ipr_cmnd *ipr_cmd;
6801         struct ipr_ioarcb *ioarcb;
6802         struct ipr_ioarcb_ata_regs *regs;
6803
6804         if (qc->lldd_task == NULL)
6805                 ipr_qc_defer(qc);
6806
6807         ipr_cmd = qc->lldd_task;
6808         if (ipr_cmd == NULL)
6809                 return AC_ERR_SYSTEM;
6810
6811         qc->lldd_task = NULL;
6812         spin_lock(&ipr_cmd->hrrq->_lock);
6813         if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6814                         ipr_cmd->hrrq->ioa_is_dead)) {
6815                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6816                 spin_unlock(&ipr_cmd->hrrq->_lock);
6817                 return AC_ERR_SYSTEM;
6818         }
6819
6820         ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6821         ioarcb = &ipr_cmd->ioarcb;
6822
6823         if (ioa_cfg->sis64) {
6824                 regs = &ipr_cmd->i.ata_ioadl.regs;
6825                 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6826         } else
6827                 regs = &ioarcb->u.add_data.u.regs;
6828
6829         memset(regs, 0, sizeof(*regs));
6830         ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6831
6832         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6833         ipr_cmd->qc = qc;
6834         ipr_cmd->done = ipr_sata_done;
6835         ipr_cmd->ioarcb.res_handle = res->res_handle;
6836         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6837         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6838         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6839         ipr_cmd->dma_use_sg = qc->n_elem;
6840
6841         if (ioa_cfg->sis64)
6842                 ipr_build_ata_ioadl64(ipr_cmd, qc);
6843         else
6844                 ipr_build_ata_ioadl(ipr_cmd, qc);
6845
6846         regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6847         ipr_copy_sata_tf(regs, &qc->tf);
6848         memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6849         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6850
6851         switch (qc->tf.protocol) {
6852         case ATA_PROT_NODATA:
6853         case ATA_PROT_PIO:
6854                 break;
6855
6856         case ATA_PROT_DMA:
6857                 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6858                 break;
6859
6860         case ATAPI_PROT_PIO:
6861         case ATAPI_PROT_NODATA:
6862                 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6863                 break;
6864
6865         case ATAPI_PROT_DMA:
6866                 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6867                 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6868                 break;
6869
6870         default:
6871                 WARN_ON(1);
6872                 spin_unlock(&ipr_cmd->hrrq->_lock);
6873                 return AC_ERR_INVALID;
6874         }
6875
6876         ipr_send_command(ipr_cmd);
6877         spin_unlock(&ipr_cmd->hrrq->_lock);
6878
6879         return 0;
6880 }
6881
6882 /**
6883  * ipr_qc_fill_rtf - Read result TF
6884  * @qc: ATA queued command
6885  *
6886  * Return value:
6887  *      true
6888  **/
6889 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6890 {
6891         struct ipr_sata_port *sata_port = qc->ap->private_data;
6892         struct ipr_ioasa_gata *g = &sata_port->ioasa;
6893         struct ata_taskfile *tf = &qc->result_tf;
6894
6895         tf->feature = g->error;
6896         tf->nsect = g->nsect;
6897         tf->lbal = g->lbal;
6898         tf->lbam = g->lbam;
6899         tf->lbah = g->lbah;
6900         tf->device = g->device;
6901         tf->command = g->status;
6902         tf->hob_nsect = g->hob_nsect;
6903         tf->hob_lbal = g->hob_lbal;
6904         tf->hob_lbam = g->hob_lbam;
6905         tf->hob_lbah = g->hob_lbah;
6906
6907         return true;
6908 }
6909
6910 static struct ata_port_operations ipr_sata_ops = {
6911         .phy_reset = ipr_ata_phy_reset,
6912         .hardreset = ipr_sata_reset,
6913         .post_internal_cmd = ipr_ata_post_internal,
6914         .qc_prep = ata_noop_qc_prep,
6915         .qc_defer = ipr_qc_defer,
6916         .qc_issue = ipr_qc_issue,
6917         .qc_fill_rtf = ipr_qc_fill_rtf,
6918         .port_start = ata_sas_port_start,
6919         .port_stop = ata_sas_port_stop
6920 };
6921
6922 static struct ata_port_info sata_port_info = {
6923         .flags          = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
6924                           ATA_FLAG_SAS_HOST,
6925         .pio_mask       = ATA_PIO4_ONLY,
6926         .mwdma_mask     = ATA_MWDMA2,
6927         .udma_mask      = ATA_UDMA6,
6928         .port_ops       = &ipr_sata_ops
6929 };
6930
6931 #ifdef CONFIG_PPC_PSERIES
6932 static const u16 ipr_blocked_processors[] = {
6933         PVR_NORTHSTAR,
6934         PVR_PULSAR,
6935         PVR_POWER4,
6936         PVR_ICESTAR,
6937         PVR_SSTAR,
6938         PVR_POWER4p,
6939         PVR_630,
6940         PVR_630p
6941 };
6942
6943 /**
6944  * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6945  * @ioa_cfg:    ioa cfg struct
6946  *
6947  * Adapters that use Gemstone revision < 3.1 do not work reliably on
6948  * certain pSeries hardware. This function determines if the given
6949  * adapter is in one of these confgurations or not.
6950  *
6951  * Return value:
6952  *      1 if adapter is not supported / 0 if adapter is supported
6953  **/
6954 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6955 {
6956         int i;
6957
6958         if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6959                 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
6960                         if (pvr_version_is(ipr_blocked_processors[i]))
6961                                 return 1;
6962                 }
6963         }
6964         return 0;
6965 }
6966 #else
6967 #define ipr_invalid_adapter(ioa_cfg) 0
6968 #endif
6969
6970 /**
6971  * ipr_ioa_bringdown_done - IOA bring down completion.
6972  * @ipr_cmd:    ipr command struct
6973  *
6974  * This function processes the completion of an adapter bring down.
6975  * It wakes any reset sleepers.
6976  *
6977  * Return value:
6978  *      IPR_RC_JOB_RETURN
6979  **/
6980 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6981 {
6982         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6983         int i;
6984
6985         ENTER;
6986         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6987                 ipr_trace;
6988                 spin_unlock_irq(ioa_cfg->host->host_lock);
6989                 scsi_unblock_requests(ioa_cfg->host);
6990                 spin_lock_irq(ioa_cfg->host->host_lock);
6991         }
6992
6993         ioa_cfg->in_reset_reload = 0;
6994         ioa_cfg->reset_retries = 0;
6995         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
6996                 spin_lock(&ioa_cfg->hrrq[i]._lock);
6997                 ioa_cfg->hrrq[i].ioa_is_dead = 1;
6998                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
6999         }
7000         wmb();
7001
7002         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7003         wake_up_all(&ioa_cfg->reset_wait_q);
7004         LEAVE;
7005
7006         return IPR_RC_JOB_RETURN;
7007 }
7008
7009 /**
7010  * ipr_ioa_reset_done - IOA reset completion.
7011  * @ipr_cmd:    ipr command struct
7012  *
7013  * This function processes the completion of an adapter reset.
7014  * It schedules any necessary mid-layer add/removes and
7015  * wakes any reset sleepers.
7016  *
7017  * Return value:
7018  *      IPR_RC_JOB_RETURN
7019  **/
7020 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7021 {
7022         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7023         struct ipr_resource_entry *res;
7024         struct ipr_hostrcb *hostrcb, *temp;
7025         int i = 0, j;
7026
7027         ENTER;
7028         ioa_cfg->in_reset_reload = 0;
7029         for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7030                 spin_lock(&ioa_cfg->hrrq[j]._lock);
7031                 ioa_cfg->hrrq[j].allow_cmds = 1;
7032                 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7033         }
7034         wmb();
7035         ioa_cfg->reset_cmd = NULL;
7036         ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7037
7038         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7039                 if (res->add_to_ml || res->del_from_ml) {
7040                         ipr_trace;
7041                         break;
7042                 }
7043         }
7044         schedule_work(&ioa_cfg->work_q);
7045
7046         list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
7047                 list_del(&hostrcb->queue);
7048                 if (i++ < IPR_NUM_LOG_HCAMS)
7049                         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
7050                 else
7051                         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
7052         }
7053
7054         scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7055         dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7056
7057         ioa_cfg->reset_retries = 0;
7058         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7059         wake_up_all(&ioa_cfg->reset_wait_q);
7060
7061         spin_unlock(ioa_cfg->host->host_lock);
7062         scsi_unblock_requests(ioa_cfg->host);
7063         spin_lock(ioa_cfg->host->host_lock);
7064
7065         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
7066                 scsi_block_requests(ioa_cfg->host);
7067
7068         schedule_work(&ioa_cfg->work_q);
7069         LEAVE;
7070         return IPR_RC_JOB_RETURN;
7071 }
7072
7073 /**
7074  * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7075  * @supported_dev:      supported device struct
7076  * @vpids:                      vendor product id struct
7077  *
7078  * Return value:
7079  *      none
7080  **/
7081 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7082                                  struct ipr_std_inq_vpids *vpids)
7083 {
7084         memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7085         memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7086         supported_dev->num_records = 1;
7087         supported_dev->data_length =
7088                 cpu_to_be16(sizeof(struct ipr_supported_device));
7089         supported_dev->reserved = 0;
7090 }
7091
7092 /**
7093  * ipr_set_supported_devs - Send Set Supported Devices for a device
7094  * @ipr_cmd:    ipr command struct
7095  *
7096  * This function sends a Set Supported Devices to the adapter
7097  *
7098  * Return value:
7099  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7100  **/
7101 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7102 {
7103         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7104         struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7105         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7106         struct ipr_resource_entry *res = ipr_cmd->u.res;
7107
7108         ipr_cmd->job_step = ipr_ioa_reset_done;
7109
7110         list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7111                 if (!ipr_is_scsi_disk(res))
7112                         continue;
7113
7114                 ipr_cmd->u.res = res;
7115                 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7116
7117                 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7118                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7119                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7120
7121                 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7122                 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7123                 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7124                 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7125
7126                 ipr_init_ioadl(ipr_cmd,
7127                                ioa_cfg->vpd_cbs_dma +
7128                                  offsetof(struct ipr_misc_cbs, supp_dev),
7129                                sizeof(struct ipr_supported_device),
7130                                IPR_IOADL_FLAGS_WRITE_LAST);
7131
7132                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7133                            IPR_SET_SUP_DEVICE_TIMEOUT);
7134
7135                 if (!ioa_cfg->sis64)
7136                         ipr_cmd->job_step = ipr_set_supported_devs;
7137                 LEAVE;
7138                 return IPR_RC_JOB_RETURN;
7139         }
7140
7141         LEAVE;
7142         return IPR_RC_JOB_CONTINUE;
7143 }
7144
7145 /**
7146  * ipr_get_mode_page - Locate specified mode page
7147  * @mode_pages: mode page buffer
7148  * @page_code:  page code to find
7149  * @len:                minimum required length for mode page
7150  *
7151  * Return value:
7152  *      pointer to mode page / NULL on failure
7153  **/
7154 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7155                                u32 page_code, u32 len)
7156 {
7157         struct ipr_mode_page_hdr *mode_hdr;
7158         u32 page_length;
7159         u32 length;
7160
7161         if (!mode_pages || (mode_pages->hdr.length == 0))
7162                 return NULL;
7163
7164         length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7165         mode_hdr = (struct ipr_mode_page_hdr *)
7166                 (mode_pages->data + mode_pages->hdr.block_desc_len);
7167
7168         while (length) {
7169                 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7170                         if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7171                                 return mode_hdr;
7172                         break;
7173                 } else {
7174                         page_length = (sizeof(struct ipr_mode_page_hdr) +
7175                                        mode_hdr->page_length);
7176                         length -= page_length;
7177                         mode_hdr = (struct ipr_mode_page_hdr *)
7178                                 ((unsigned long)mode_hdr + page_length);
7179                 }
7180         }
7181         return NULL;
7182 }
7183
7184 /**
7185  * ipr_check_term_power - Check for term power errors
7186  * @ioa_cfg:    ioa config struct
7187  * @mode_pages: IOAFP mode pages buffer
7188  *
7189  * Check the IOAFP's mode page 28 for term power errors
7190  *
7191  * Return value:
7192  *      nothing
7193  **/
7194 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7195                                  struct ipr_mode_pages *mode_pages)
7196 {
7197         int i;
7198         int entry_length;
7199         struct ipr_dev_bus_entry *bus;
7200         struct ipr_mode_page28 *mode_page;
7201
7202         mode_page = ipr_get_mode_page(mode_pages, 0x28,
7203                                       sizeof(struct ipr_mode_page28));
7204
7205         entry_length = mode_page->entry_length;
7206
7207         bus = mode_page->bus;
7208
7209         for (i = 0; i < mode_page->num_entries; i++) {
7210                 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7211                         dev_err(&ioa_cfg->pdev->dev,
7212                                 "Term power is absent on scsi bus %d\n",
7213                                 bus->res_addr.bus);
7214                 }
7215
7216                 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7217         }
7218 }
7219
7220 /**
7221  * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7222  * @ioa_cfg:    ioa config struct
7223  *
7224  * Looks through the config table checking for SES devices. If
7225  * the SES device is in the SES table indicating a maximum SCSI
7226  * bus speed, the speed is limited for the bus.
7227  *
7228  * Return value:
7229  *      none
7230  **/
7231 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7232 {
7233         u32 max_xfer_rate;
7234         int i;
7235
7236         for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7237                 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7238                                                        ioa_cfg->bus_attr[i].bus_width);
7239
7240                 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7241                         ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7242         }
7243 }
7244
7245 /**
7246  * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7247  * @ioa_cfg:    ioa config struct
7248  * @mode_pages: mode page 28 buffer
7249  *
7250  * Updates mode page 28 based on driver configuration
7251  *
7252  * Return value:
7253  *      none
7254  **/
7255 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7256                                           struct ipr_mode_pages *mode_pages)
7257 {
7258         int i, entry_length;
7259         struct ipr_dev_bus_entry *bus;
7260         struct ipr_bus_attributes *bus_attr;
7261         struct ipr_mode_page28 *mode_page;
7262
7263         mode_page = ipr_get_mode_page(mode_pages, 0x28,
7264                                       sizeof(struct ipr_mode_page28));
7265
7266         entry_length = mode_page->entry_length;
7267
7268         /* Loop for each device bus entry */
7269         for (i = 0, bus = mode_page->bus;
7270              i < mode_page->num_entries;
7271              i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7272                 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7273                         dev_err(&ioa_cfg->pdev->dev,
7274                                 "Invalid resource address reported: 0x%08X\n",
7275                                 IPR_GET_PHYS_LOC(bus->res_addr));
7276                         continue;
7277                 }
7278
7279                 bus_attr = &ioa_cfg->bus_attr[i];
7280                 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7281                 bus->bus_width = bus_attr->bus_width;
7282                 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7283                 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7284                 if (bus_attr->qas_enabled)
7285                         bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7286                 else
7287                         bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7288         }
7289 }
7290
7291 /**
7292  * ipr_build_mode_select - Build a mode select command
7293  * @ipr_cmd:    ipr command struct
7294  * @res_handle: resource handle to send command to
7295  * @parm:               Byte 2 of Mode Sense command
7296  * @dma_addr:   DMA buffer address
7297  * @xfer_len:   data transfer length
7298  *
7299  * Return value:
7300  *      none
7301  **/
7302 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7303                                   __be32 res_handle, u8 parm,
7304                                   dma_addr_t dma_addr, u8 xfer_len)
7305 {
7306         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7307
7308         ioarcb->res_handle = res_handle;
7309         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7310         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7311         ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7312         ioarcb->cmd_pkt.cdb[1] = parm;
7313         ioarcb->cmd_pkt.cdb[4] = xfer_len;
7314
7315         ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7316 }
7317
7318 /**
7319  * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7320  * @ipr_cmd:    ipr command struct
7321  *
7322  * This function sets up the SCSI bus attributes and sends
7323  * a Mode Select for Page 28 to activate them.
7324  *
7325  * Return value:
7326  *      IPR_RC_JOB_RETURN
7327  **/
7328 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7329 {
7330         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7331         struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7332         int length;
7333
7334         ENTER;
7335         ipr_scsi_bus_speed_limit(ioa_cfg);
7336         ipr_check_term_power(ioa_cfg, mode_pages);
7337         ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7338         length = mode_pages->hdr.length + 1;
7339         mode_pages->hdr.length = 0;
7340
7341         ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7342                               ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7343                               length);
7344
7345         ipr_cmd->job_step = ipr_set_supported_devs;
7346         ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7347                                     struct ipr_resource_entry, queue);
7348         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7349
7350         LEAVE;
7351         return IPR_RC_JOB_RETURN;
7352 }
7353
7354 /**
7355  * ipr_build_mode_sense - Builds a mode sense command
7356  * @ipr_cmd:    ipr command struct
7357  * @res:                resource entry struct
7358  * @parm:               Byte 2 of mode sense command
7359  * @dma_addr:   DMA address of mode sense buffer
7360  * @xfer_len:   Size of DMA buffer
7361  *
7362  * Return value:
7363  *      none
7364  **/
7365 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7366                                  __be32 res_handle,
7367                                  u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7368 {
7369         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7370
7371         ioarcb->res_handle = res_handle;
7372         ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7373         ioarcb->cmd_pkt.cdb[2] = parm;
7374         ioarcb->cmd_pkt.cdb[4] = xfer_len;
7375         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7376
7377         ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7378 }
7379
7380 /**
7381  * ipr_reset_cmd_failed - Handle failure of IOA reset command
7382  * @ipr_cmd:    ipr command struct
7383  *
7384  * This function handles the failure of an IOA bringup command.
7385  *
7386  * Return value:
7387  *      IPR_RC_JOB_RETURN
7388  **/
7389 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7390 {
7391         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7392         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7393
7394         dev_err(&ioa_cfg->pdev->dev,
7395                 "0x%02X failed with IOASC: 0x%08X\n",
7396                 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7397
7398         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7399         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7400         return IPR_RC_JOB_RETURN;
7401 }
7402
7403 /**
7404  * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7405  * @ipr_cmd:    ipr command struct
7406  *
7407  * This function handles the failure of a Mode Sense to the IOAFP.
7408  * Some adapters do not handle all mode pages.
7409  *
7410  * Return value:
7411  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7412  **/
7413 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7414 {
7415         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7416         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7417
7418         if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7419                 ipr_cmd->job_step = ipr_set_supported_devs;
7420                 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7421                                             struct ipr_resource_entry, queue);
7422                 return IPR_RC_JOB_CONTINUE;
7423         }
7424
7425         return ipr_reset_cmd_failed(ipr_cmd);
7426 }
7427
7428 /**
7429  * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7430  * @ipr_cmd:    ipr command struct
7431  *
7432  * This function send a Page 28 mode sense to the IOA to
7433  * retrieve SCSI bus attributes.
7434  *
7435  * Return value:
7436  *      IPR_RC_JOB_RETURN
7437  **/
7438 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7439 {
7440         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7441
7442         ENTER;
7443         ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7444                              0x28, ioa_cfg->vpd_cbs_dma +
7445                              offsetof(struct ipr_misc_cbs, mode_pages),
7446                              sizeof(struct ipr_mode_pages));
7447
7448         ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7449         ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7450
7451         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7452
7453         LEAVE;
7454         return IPR_RC_JOB_RETURN;
7455 }
7456
7457 /**
7458  * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7459  * @ipr_cmd:    ipr command struct
7460  *
7461  * This function enables dual IOA RAID support if possible.
7462  *
7463  * Return value:
7464  *      IPR_RC_JOB_RETURN
7465  **/
7466 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7467 {
7468         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7469         struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7470         struct ipr_mode_page24 *mode_page;
7471         int length;
7472
7473         ENTER;
7474         mode_page = ipr_get_mode_page(mode_pages, 0x24,
7475                                       sizeof(struct ipr_mode_page24));
7476
7477         if (mode_page)
7478                 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7479
7480         length = mode_pages->hdr.length + 1;
7481         mode_pages->hdr.length = 0;
7482
7483         ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7484                               ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7485                               length);
7486
7487         ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7488         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7489
7490         LEAVE;
7491         return IPR_RC_JOB_RETURN;
7492 }
7493
7494 /**
7495  * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7496  * @ipr_cmd:    ipr command struct
7497  *
7498  * This function handles the failure of a Mode Sense to the IOAFP.
7499  * Some adapters do not handle all mode pages.
7500  *
7501  * Return value:
7502  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7503  **/
7504 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7505 {
7506         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7507
7508         if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7509                 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7510                 return IPR_RC_JOB_CONTINUE;
7511         }
7512
7513         return ipr_reset_cmd_failed(ipr_cmd);
7514 }
7515
7516 /**
7517  * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7518  * @ipr_cmd:    ipr command struct
7519  *
7520  * This function send a mode sense to the IOA to retrieve
7521  * the IOA Advanced Function Control mode page.
7522  *
7523  * Return value:
7524  *      IPR_RC_JOB_RETURN
7525  **/
7526 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7527 {
7528         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7529
7530         ENTER;
7531         ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7532                              0x24, ioa_cfg->vpd_cbs_dma +
7533                              offsetof(struct ipr_misc_cbs, mode_pages),
7534                              sizeof(struct ipr_mode_pages));
7535
7536         ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7537         ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7538
7539         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7540
7541         LEAVE;
7542         return IPR_RC_JOB_RETURN;
7543 }
7544
7545 /**
7546  * ipr_init_res_table - Initialize the resource table
7547  * @ipr_cmd:    ipr command struct
7548  *
7549  * This function looks through the existing resource table, comparing
7550  * it with the config table. This function will take care of old/new
7551  * devices and schedule adding/removing them from the mid-layer
7552  * as appropriate.
7553  *
7554  * Return value:
7555  *      IPR_RC_JOB_CONTINUE
7556  **/
7557 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7558 {
7559         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7560         struct ipr_resource_entry *res, *temp;
7561         struct ipr_config_table_entry_wrapper cfgtew;
7562         int entries, found, flag, i;
7563         LIST_HEAD(old_res);
7564
7565         ENTER;
7566         if (ioa_cfg->sis64)
7567                 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7568         else
7569                 flag = ioa_cfg->u.cfg_table->hdr.flags;
7570
7571         if (flag & IPR_UCODE_DOWNLOAD_REQ)
7572                 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7573
7574         list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7575                 list_move_tail(&res->queue, &old_res);
7576
7577         if (ioa_cfg->sis64)
7578                 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7579         else
7580                 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7581
7582         for (i = 0; i < entries; i++) {
7583                 if (ioa_cfg->sis64)
7584                         cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7585                 else
7586                         cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7587                 found = 0;
7588
7589                 list_for_each_entry_safe(res, temp, &old_res, queue) {
7590                         if (ipr_is_same_device(res, &cfgtew)) {
7591                                 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7592                                 found = 1;
7593                                 break;
7594                         }
7595                 }
7596
7597                 if (!found) {
7598                         if (list_empty(&ioa_cfg->free_res_q)) {
7599                                 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7600                                 break;
7601                         }
7602
7603                         found = 1;
7604                         res = list_entry(ioa_cfg->free_res_q.next,
7605                                          struct ipr_resource_entry, queue);
7606                         list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7607                         ipr_init_res_entry(res, &cfgtew);
7608                         res->add_to_ml = 1;
7609                 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7610                         res->sdev->allow_restart = 1;
7611
7612                 if (found)
7613                         ipr_update_res_entry(res, &cfgtew);
7614         }
7615
7616         list_for_each_entry_safe(res, temp, &old_res, queue) {
7617                 if (res->sdev) {
7618                         res->del_from_ml = 1;
7619                         res->res_handle = IPR_INVALID_RES_HANDLE;
7620                         list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7621                 }
7622         }
7623
7624         list_for_each_entry_safe(res, temp, &old_res, queue) {
7625                 ipr_clear_res_target(res);
7626                 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7627         }
7628
7629         if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7630                 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7631         else
7632                 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7633
7634         LEAVE;
7635         return IPR_RC_JOB_CONTINUE;
7636 }
7637
7638 /**
7639  * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7640  * @ipr_cmd:    ipr command struct
7641  *
7642  * This function sends a Query IOA Configuration command
7643  * to the adapter to retrieve the IOA configuration table.
7644  *
7645  * Return value:
7646  *      IPR_RC_JOB_RETURN
7647  **/
7648 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7649 {
7650         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7651         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7652         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7653         struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7654
7655         ENTER;
7656         if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7657                 ioa_cfg->dual_raid = 1;
7658         dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7659                  ucode_vpd->major_release, ucode_vpd->card_type,
7660                  ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7661         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7662         ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7663
7664         ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7665         ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7666         ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7667         ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7668
7669         ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7670                        IPR_IOADL_FLAGS_READ_LAST);
7671
7672         ipr_cmd->job_step = ipr_init_res_table;
7673
7674         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7675
7676         LEAVE;
7677         return IPR_RC_JOB_RETURN;
7678 }
7679
7680 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7681 {
7682         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7683
7684         if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7685                 return IPR_RC_JOB_CONTINUE;
7686
7687         return ipr_reset_cmd_failed(ipr_cmd);
7688 }
7689
7690 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7691                                          __be32 res_handle, u8 sa_code)
7692 {
7693         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7694
7695         ioarcb->res_handle = res_handle;
7696         ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7697         ioarcb->cmd_pkt.cdb[1] = sa_code;
7698         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7699 }
7700
7701 /**
7702  * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7703  * action
7704  *
7705  * Return value:
7706  *      none
7707  **/
7708 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7709 {
7710         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7711         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7712         struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7713
7714         ENTER;
7715
7716         ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7717
7718         if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7719                 ipr_build_ioa_service_action(ipr_cmd,
7720                                              cpu_to_be32(IPR_IOA_RES_HANDLE),
7721                                              IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7722
7723                 ioarcb->cmd_pkt.cdb[2] = 0x40;
7724
7725                 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7726                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7727                            IPR_SET_SUP_DEVICE_TIMEOUT);
7728
7729                 LEAVE;
7730                 return IPR_RC_JOB_RETURN;
7731         }
7732
7733         LEAVE;
7734         return IPR_RC_JOB_CONTINUE;
7735 }
7736
7737 /**
7738  * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7739  * @ipr_cmd:    ipr command struct
7740  *
7741  * This utility function sends an inquiry to the adapter.
7742  *
7743  * Return value:
7744  *      none
7745  **/
7746 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7747                               dma_addr_t dma_addr, u8 xfer_len)
7748 {
7749         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7750
7751         ENTER;
7752         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7753         ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7754
7755         ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7756         ioarcb->cmd_pkt.cdb[1] = flags;
7757         ioarcb->cmd_pkt.cdb[2] = page;
7758         ioarcb->cmd_pkt.cdb[4] = xfer_len;
7759
7760         ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7761
7762         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7763         LEAVE;
7764 }
7765
7766 /**
7767  * ipr_inquiry_page_supported - Is the given inquiry page supported
7768  * @page0:              inquiry page 0 buffer
7769  * @page:               page code.
7770  *
7771  * This function determines if the specified inquiry page is supported.
7772  *
7773  * Return value:
7774  *      1 if page is supported / 0 if not
7775  **/
7776 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7777 {
7778         int i;
7779
7780         for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7781                 if (page0->page[i] == page)
7782                         return 1;
7783
7784         return 0;
7785 }
7786
7787 /**
7788  * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
7789  * @ipr_cmd:    ipr command struct
7790  *
7791  * This function sends a Page 0xC4 inquiry to the adapter
7792  * to retrieve software VPD information.
7793  *
7794  * Return value:
7795  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7796  **/
7797 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
7798 {
7799         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7800         struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7801         struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7802
7803         ENTER;
7804         ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
7805         memset(pageC4, 0, sizeof(*pageC4));
7806
7807         if (ipr_inquiry_page_supported(page0, 0xC4)) {
7808                 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
7809                                   (ioa_cfg->vpd_cbs_dma
7810                                    + offsetof(struct ipr_misc_cbs,
7811                                               pageC4_data)),
7812                                   sizeof(struct ipr_inquiry_pageC4));
7813                 return IPR_RC_JOB_RETURN;
7814         }
7815
7816         LEAVE;
7817         return IPR_RC_JOB_CONTINUE;
7818 }
7819
7820 /**
7821  * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7822  * @ipr_cmd:    ipr command struct
7823  *
7824  * This function sends a Page 0xD0 inquiry to the adapter
7825  * to retrieve adapter capabilities.
7826  *
7827  * Return value:
7828  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7829  **/
7830 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7831 {
7832         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7833         struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7834         struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7835
7836         ENTER;
7837         ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
7838         memset(cap, 0, sizeof(*cap));
7839
7840         if (ipr_inquiry_page_supported(page0, 0xD0)) {
7841                 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7842                                   ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7843                                   sizeof(struct ipr_inquiry_cap));
7844                 return IPR_RC_JOB_RETURN;
7845         }
7846
7847         LEAVE;
7848         return IPR_RC_JOB_CONTINUE;
7849 }
7850
7851 /**
7852  * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7853  * @ipr_cmd:    ipr command struct
7854  *
7855  * This function sends a Page 3 inquiry to the adapter
7856  * to retrieve software VPD information.
7857  *
7858  * Return value:
7859  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7860  **/
7861 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7862 {
7863         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7864
7865         ENTER;
7866
7867         ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7868
7869         ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7870                           ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7871                           sizeof(struct ipr_inquiry_page3));
7872
7873         LEAVE;
7874         return IPR_RC_JOB_RETURN;
7875 }
7876
7877 /**
7878  * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7879  * @ipr_cmd:    ipr command struct
7880  *
7881  * This function sends a Page 0 inquiry to the adapter
7882  * to retrieve supported inquiry pages.
7883  *
7884  * Return value:
7885  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7886  **/
7887 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7888 {
7889         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7890         char type[5];
7891
7892         ENTER;
7893
7894         /* Grab the type out of the VPD and store it away */
7895         memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7896         type[4] = '\0';
7897         ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7898
7899         if (ipr_invalid_adapter(ioa_cfg)) {
7900                 dev_err(&ioa_cfg->pdev->dev,
7901                         "Adapter not supported in this hardware configuration.\n");
7902
7903                 if (!ipr_testmode) {
7904                         ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
7905                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7906                         list_add_tail(&ipr_cmd->queue,
7907                                         &ioa_cfg->hrrq->hrrq_free_q);
7908                         return IPR_RC_JOB_RETURN;
7909                 }
7910         }
7911
7912         ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7913
7914         ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7915                           ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7916                           sizeof(struct ipr_inquiry_page0));
7917
7918         LEAVE;
7919         return IPR_RC_JOB_RETURN;
7920 }
7921
7922 /**
7923  * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7924  * @ipr_cmd:    ipr command struct
7925  *
7926  * This function sends a standard inquiry to the adapter.
7927  *
7928  * Return value:
7929  *      IPR_RC_JOB_RETURN
7930  **/
7931 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7932 {
7933         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7934
7935         ENTER;
7936         ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7937
7938         ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7939                           ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7940                           sizeof(struct ipr_ioa_vpd));
7941
7942         LEAVE;
7943         return IPR_RC_JOB_RETURN;
7944 }
7945
7946 /**
7947  * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7948  * @ipr_cmd:    ipr command struct
7949  *
7950  * This function send an Identify Host Request Response Queue
7951  * command to establish the HRRQ with the adapter.
7952  *
7953  * Return value:
7954  *      IPR_RC_JOB_RETURN
7955  **/
7956 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7957 {
7958         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7959         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7960         struct ipr_hrr_queue *hrrq;
7961
7962         ENTER;
7963         ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7964         dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7965
7966         if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7967                 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7968
7969                 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7970                 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7971
7972                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7973                 if (ioa_cfg->sis64)
7974                         ioarcb->cmd_pkt.cdb[1] = 0x1;
7975
7976                 if (ioa_cfg->nvectors == 1)
7977                         ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7978                 else
7979                         ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7980
7981                 ioarcb->cmd_pkt.cdb[2] =
7982                         ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7983                 ioarcb->cmd_pkt.cdb[3] =
7984                         ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7985                 ioarcb->cmd_pkt.cdb[4] =
7986                         ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7987                 ioarcb->cmd_pkt.cdb[5] =
7988                         ((u64) hrrq->host_rrq_dma) & 0xff;
7989                 ioarcb->cmd_pkt.cdb[7] =
7990                         ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7991                 ioarcb->cmd_pkt.cdb[8] =
7992                         (sizeof(u32) * hrrq->size) & 0xff;
7993
7994                 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7995                         ioarcb->cmd_pkt.cdb[9] =
7996                                         ioa_cfg->identify_hrrq_index;
7997
7998                 if (ioa_cfg->sis64) {
7999                         ioarcb->cmd_pkt.cdb[10] =
8000                                 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
8001                         ioarcb->cmd_pkt.cdb[11] =
8002                                 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
8003                         ioarcb->cmd_pkt.cdb[12] =
8004                                 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
8005                         ioarcb->cmd_pkt.cdb[13] =
8006                                 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8007                 }
8008
8009                 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8010                         ioarcb->cmd_pkt.cdb[14] =
8011                                         ioa_cfg->identify_hrrq_index;
8012
8013                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8014                            IPR_INTERNAL_TIMEOUT);
8015
8016                 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8017                         ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8018
8019                 LEAVE;
8020                 return IPR_RC_JOB_RETURN;
8021         }
8022
8023         LEAVE;
8024         return IPR_RC_JOB_CONTINUE;
8025 }
8026
8027 /**
8028  * ipr_reset_timer_done - Adapter reset timer function
8029  * @ipr_cmd:    ipr command struct
8030  *
8031  * Description: This function is used in adapter reset processing
8032  * for timing events. If the reset_cmd pointer in the IOA
8033  * config struct is not this adapter's we are doing nested
8034  * resets and fail_all_ops will take care of freeing the
8035  * command block.
8036  *
8037  * Return value:
8038  *      none
8039  **/
8040 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
8041 {
8042         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8043         unsigned long lock_flags = 0;
8044
8045         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8046
8047         if (ioa_cfg->reset_cmd == ipr_cmd) {
8048                 list_del(&ipr_cmd->queue);
8049                 ipr_cmd->done(ipr_cmd);
8050         }
8051
8052         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8053 }
8054
8055 /**
8056  * ipr_reset_start_timer - Start a timer for adapter reset job
8057  * @ipr_cmd:    ipr command struct
8058  * @timeout:    timeout value
8059  *
8060  * Description: This function is used in adapter reset processing
8061  * for timing events. If the reset_cmd pointer in the IOA
8062  * config struct is not this adapter's we are doing nested
8063  * resets and fail_all_ops will take care of freeing the
8064  * command block.
8065  *
8066  * Return value:
8067  *      none
8068  **/
8069 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8070                                   unsigned long timeout)
8071 {
8072
8073         ENTER;
8074         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8075         ipr_cmd->done = ipr_reset_ioa_job;
8076
8077         ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8078         ipr_cmd->timer.expires = jiffies + timeout;
8079         ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
8080         add_timer(&ipr_cmd->timer);
8081 }
8082
8083 /**
8084  * ipr_init_ioa_mem - Initialize ioa_cfg control block
8085  * @ioa_cfg:    ioa cfg struct
8086  *
8087  * Return value:
8088  *      nothing
8089  **/
8090 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8091 {
8092         struct ipr_hrr_queue *hrrq;
8093
8094         for_each_hrrq(hrrq, ioa_cfg) {
8095                 spin_lock(&hrrq->_lock);
8096                 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8097
8098                 /* Initialize Host RRQ pointers */
8099                 hrrq->hrrq_start = hrrq->host_rrq;
8100                 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8101                 hrrq->hrrq_curr = hrrq->hrrq_start;
8102                 hrrq->toggle_bit = 1;
8103                 spin_unlock(&hrrq->_lock);
8104         }
8105         wmb();
8106
8107         ioa_cfg->identify_hrrq_index = 0;
8108         if (ioa_cfg->hrrq_num == 1)
8109                 atomic_set(&ioa_cfg->hrrq_index, 0);
8110         else
8111                 atomic_set(&ioa_cfg->hrrq_index, 1);
8112
8113         /* Zero out config table */
8114         memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8115 }
8116
8117 /**
8118  * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8119  * @ipr_cmd:    ipr command struct
8120  *
8121  * Return value:
8122  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8123  **/
8124 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8125 {
8126         unsigned long stage, stage_time;
8127         u32 feedback;
8128         volatile u32 int_reg;
8129         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8130         u64 maskval = 0;
8131
8132         feedback = readl(ioa_cfg->regs.init_feedback_reg);
8133         stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8134         stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8135
8136         ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8137
8138         /* sanity check the stage_time value */
8139         if (stage_time == 0)
8140                 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8141         else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8142                 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8143         else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8144                 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8145
8146         if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8147                 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8148                 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8149                 stage_time = ioa_cfg->transop_timeout;
8150                 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8151         } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8152                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8153                 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8154                         ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8155                         maskval = IPR_PCII_IPL_STAGE_CHANGE;
8156                         maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8157                         writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8158                         int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8159                         return IPR_RC_JOB_CONTINUE;
8160                 }
8161         }
8162
8163         ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8164         ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8165         ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8166         ipr_cmd->done = ipr_reset_ioa_job;
8167         add_timer(&ipr_cmd->timer);
8168
8169         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8170
8171         return IPR_RC_JOB_RETURN;
8172 }
8173
8174 /**
8175  * ipr_reset_enable_ioa - Enable the IOA following a reset.
8176  * @ipr_cmd:    ipr command struct
8177  *
8178  * This function reinitializes some control blocks and
8179  * enables destructive diagnostics on the adapter.
8180  *
8181  * Return value:
8182  *      IPR_RC_JOB_RETURN
8183  **/
8184 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8185 {
8186         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8187         volatile u32 int_reg;
8188         volatile u64 maskval;
8189         int i;
8190
8191         ENTER;
8192         ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8193         ipr_init_ioa_mem(ioa_cfg);
8194
8195         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8196                 spin_lock(&ioa_cfg->hrrq[i]._lock);
8197                 ioa_cfg->hrrq[i].allow_interrupts = 1;
8198                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8199         }
8200         wmb();
8201         if (ioa_cfg->sis64) {
8202                 /* Set the adapter to the correct endian mode. */
8203                 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8204                 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8205         }
8206
8207         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8208
8209         if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8210                 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8211                        ioa_cfg->regs.clr_interrupt_mask_reg32);
8212                 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8213                 return IPR_RC_JOB_CONTINUE;
8214         }
8215
8216         /* Enable destructive diagnostics on IOA */
8217         writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8218
8219         if (ioa_cfg->sis64) {
8220                 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8221                 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8222                 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8223         } else
8224                 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8225
8226         int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8227
8228         dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8229
8230         if (ioa_cfg->sis64) {
8231                 ipr_cmd->job_step = ipr_reset_next_stage;
8232                 return IPR_RC_JOB_CONTINUE;
8233         }
8234
8235         ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8236         ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8237         ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8238         ipr_cmd->done = ipr_reset_ioa_job;
8239         add_timer(&ipr_cmd->timer);
8240         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8241
8242         LEAVE;
8243         return IPR_RC_JOB_RETURN;
8244 }
8245
8246 /**
8247  * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8248  * @ipr_cmd:    ipr command struct
8249  *
8250  * This function is invoked when an adapter dump has run out
8251  * of processing time.
8252  *
8253  * Return value:
8254  *      IPR_RC_JOB_CONTINUE
8255  **/
8256 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8257 {
8258         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8259
8260         if (ioa_cfg->sdt_state == GET_DUMP)
8261                 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8262         else if (ioa_cfg->sdt_state == READ_DUMP)
8263                 ioa_cfg->sdt_state = ABORT_DUMP;
8264
8265         ioa_cfg->dump_timeout = 1;
8266         ipr_cmd->job_step = ipr_reset_alert;
8267
8268         return IPR_RC_JOB_CONTINUE;
8269 }
8270
8271 /**
8272  * ipr_unit_check_no_data - Log a unit check/no data error log
8273  * @ioa_cfg:            ioa config struct
8274  *
8275  * Logs an error indicating the adapter unit checked, but for some
8276  * reason, we were unable to fetch the unit check buffer.
8277  *
8278  * Return value:
8279  *      nothing
8280  **/
8281 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8282 {
8283         ioa_cfg->errors_logged++;
8284         dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8285 }
8286
8287 /**
8288  * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8289  * @ioa_cfg:            ioa config struct
8290  *
8291  * Fetches the unit check buffer from the adapter by clocking the data
8292  * through the mailbox register.
8293  *
8294  * Return value:
8295  *      nothing
8296  **/
8297 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8298 {
8299         unsigned long mailbox;
8300         struct ipr_hostrcb *hostrcb;
8301         struct ipr_uc_sdt sdt;
8302         int rc, length;
8303         u32 ioasc;
8304
8305         mailbox = readl(ioa_cfg->ioa_mailbox);
8306
8307         if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8308                 ipr_unit_check_no_data(ioa_cfg);
8309                 return;
8310         }
8311
8312         memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8313         rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8314                                         (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8315
8316         if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8317             ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8318             (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8319                 ipr_unit_check_no_data(ioa_cfg);
8320                 return;
8321         }
8322
8323         /* Find length of the first sdt entry (UC buffer) */
8324         if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8325                 length = be32_to_cpu(sdt.entry[0].end_token);
8326         else
8327                 length = (be32_to_cpu(sdt.entry[0].end_token) -
8328                           be32_to_cpu(sdt.entry[0].start_token)) &
8329                           IPR_FMT2_MBX_ADDR_MASK;
8330
8331         hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8332                              struct ipr_hostrcb, queue);
8333         list_del(&hostrcb->queue);
8334         memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8335
8336         rc = ipr_get_ldump_data_section(ioa_cfg,
8337                                         be32_to_cpu(sdt.entry[0].start_token),
8338                                         (__be32 *)&hostrcb->hcam,
8339                                         min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8340
8341         if (!rc) {
8342                 ipr_handle_log_data(ioa_cfg, hostrcb);
8343                 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8344                 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8345                     ioa_cfg->sdt_state == GET_DUMP)
8346                         ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8347         } else
8348                 ipr_unit_check_no_data(ioa_cfg);
8349
8350         list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8351 }
8352
8353 /**
8354  * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8355  * @ipr_cmd:    ipr command struct
8356  *
8357  * Description: This function will call to get the unit check buffer.
8358  *
8359  * Return value:
8360  *      IPR_RC_JOB_RETURN
8361  **/
8362 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8363 {
8364         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8365
8366         ENTER;
8367         ioa_cfg->ioa_unit_checked = 0;
8368         ipr_get_unit_check_buffer(ioa_cfg);
8369         ipr_cmd->job_step = ipr_reset_alert;
8370         ipr_reset_start_timer(ipr_cmd, 0);
8371
8372         LEAVE;
8373         return IPR_RC_JOB_RETURN;
8374 }
8375
8376 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8377 {
8378         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8379
8380         ENTER;
8381
8382         if (ioa_cfg->sdt_state != GET_DUMP)
8383                 return IPR_RC_JOB_RETURN;
8384
8385         if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8386             (readl(ioa_cfg->regs.sense_interrupt_reg) &
8387              IPR_PCII_MAILBOX_STABLE)) {
8388
8389                 if (!ipr_cmd->u.time_left)
8390                         dev_err(&ioa_cfg->pdev->dev,
8391                                 "Timed out waiting for Mailbox register.\n");
8392
8393                 ioa_cfg->sdt_state = READ_DUMP;
8394                 ioa_cfg->dump_timeout = 0;
8395                 if (ioa_cfg->sis64)
8396                         ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8397                 else
8398                         ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8399                 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8400                 schedule_work(&ioa_cfg->work_q);
8401
8402         } else {
8403                 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8404                 ipr_reset_start_timer(ipr_cmd,
8405                                       IPR_CHECK_FOR_RESET_TIMEOUT);
8406         }
8407
8408         LEAVE;
8409         return IPR_RC_JOB_RETURN;
8410 }
8411
8412 /**
8413  * ipr_reset_restore_cfg_space - Restore PCI config space.
8414  * @ipr_cmd:    ipr command struct
8415  *
8416  * Description: This function restores the saved PCI config space of
8417  * the adapter, fails all outstanding ops back to the callers, and
8418  * fetches the dump/unit check if applicable to this reset.
8419  *
8420  * Return value:
8421  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8422  **/
8423 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8424 {
8425         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8426         u32 int_reg;
8427
8428         ENTER;
8429         ioa_cfg->pdev->state_saved = true;
8430         pci_restore_state(ioa_cfg->pdev);
8431
8432         if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8433                 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8434                 return IPR_RC_JOB_CONTINUE;
8435         }
8436
8437         ipr_fail_all_ops(ioa_cfg);
8438
8439         if (ioa_cfg->sis64) {
8440                 /* Set the adapter to the correct endian mode. */
8441                 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8442                 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8443         }
8444
8445         if (ioa_cfg->ioa_unit_checked) {
8446                 if (ioa_cfg->sis64) {
8447                         ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8448                         ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8449                         return IPR_RC_JOB_RETURN;
8450                 } else {
8451                         ioa_cfg->ioa_unit_checked = 0;
8452                         ipr_get_unit_check_buffer(ioa_cfg);
8453                         ipr_cmd->job_step = ipr_reset_alert;
8454                         ipr_reset_start_timer(ipr_cmd, 0);
8455                         return IPR_RC_JOB_RETURN;
8456                 }
8457         }
8458
8459         if (ioa_cfg->in_ioa_bringdown) {
8460                 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8461         } else if (ioa_cfg->sdt_state == GET_DUMP) {
8462                 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8463                 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8464         } else {
8465                 ipr_cmd->job_step = ipr_reset_enable_ioa;
8466         }
8467
8468         LEAVE;
8469         return IPR_RC_JOB_CONTINUE;
8470 }
8471
8472 /**
8473  * ipr_reset_bist_done - BIST has completed on the adapter.
8474  * @ipr_cmd:    ipr command struct
8475  *
8476  * Description: Unblock config space and resume the reset process.
8477  *
8478  * Return value:
8479  *      IPR_RC_JOB_CONTINUE
8480  **/
8481 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8482 {
8483         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8484
8485         ENTER;
8486         if (ioa_cfg->cfg_locked)
8487                 pci_cfg_access_unlock(ioa_cfg->pdev);
8488         ioa_cfg->cfg_locked = 0;
8489         ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8490         LEAVE;
8491         return IPR_RC_JOB_CONTINUE;
8492 }
8493
8494 /**
8495  * ipr_reset_start_bist - Run BIST on the adapter.
8496  * @ipr_cmd:    ipr command struct
8497  *
8498  * Description: This function runs BIST on the adapter, then delays 2 seconds.
8499  *
8500  * Return value:
8501  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8502  **/
8503 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8504 {
8505         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8506         int rc = PCIBIOS_SUCCESSFUL;
8507
8508         ENTER;
8509         if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8510                 writel(IPR_UPROCI_SIS64_START_BIST,
8511                        ioa_cfg->regs.set_uproc_interrupt_reg32);
8512         else
8513                 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8514
8515         if (rc == PCIBIOS_SUCCESSFUL) {
8516                 ipr_cmd->job_step = ipr_reset_bist_done;
8517                 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8518                 rc = IPR_RC_JOB_RETURN;
8519         } else {
8520                 if (ioa_cfg->cfg_locked)
8521                         pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8522                 ioa_cfg->cfg_locked = 0;
8523                 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8524                 rc = IPR_RC_JOB_CONTINUE;
8525         }
8526
8527         LEAVE;
8528         return rc;
8529 }
8530
8531 /**
8532  * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8533  * @ipr_cmd:    ipr command struct
8534  *
8535  * Description: This clears PCI reset to the adapter and delays two seconds.
8536  *
8537  * Return value:
8538  *      IPR_RC_JOB_RETURN
8539  **/
8540 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8541 {
8542         ENTER;
8543         ipr_cmd->job_step = ipr_reset_bist_done;
8544         ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8545         LEAVE;
8546         return IPR_RC_JOB_RETURN;
8547 }
8548
8549 /**
8550  * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8551  * @work:       work struct
8552  *
8553  * Description: This pulses warm reset to a slot.
8554  *
8555  **/
8556 static void ipr_reset_reset_work(struct work_struct *work)
8557 {
8558         struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8559         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8560         struct pci_dev *pdev = ioa_cfg->pdev;
8561         unsigned long lock_flags = 0;
8562
8563         ENTER;
8564         pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8565         msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8566         pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8567
8568         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8569         if (ioa_cfg->reset_cmd == ipr_cmd)
8570                 ipr_reset_ioa_job(ipr_cmd);
8571         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8572         LEAVE;
8573 }
8574
8575 /**
8576  * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8577  * @ipr_cmd:    ipr command struct
8578  *
8579  * Description: This asserts PCI reset to the adapter.
8580  *
8581  * Return value:
8582  *      IPR_RC_JOB_RETURN
8583  **/
8584 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8585 {
8586         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8587
8588         ENTER;
8589         INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8590         queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8591         ipr_cmd->job_step = ipr_reset_slot_reset_done;
8592         LEAVE;
8593         return IPR_RC_JOB_RETURN;
8594 }
8595
8596 /**
8597  * ipr_reset_block_config_access_wait - Wait for permission to block config access
8598  * @ipr_cmd:    ipr command struct
8599  *
8600  * Description: This attempts to block config access to the IOA.
8601  *
8602  * Return value:
8603  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8604  **/
8605 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8606 {
8607         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8608         int rc = IPR_RC_JOB_CONTINUE;
8609
8610         if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8611                 ioa_cfg->cfg_locked = 1;
8612                 ipr_cmd->job_step = ioa_cfg->reset;
8613         } else {
8614                 if (ipr_cmd->u.time_left) {
8615                         rc = IPR_RC_JOB_RETURN;
8616                         ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8617                         ipr_reset_start_timer(ipr_cmd,
8618                                               IPR_CHECK_FOR_RESET_TIMEOUT);
8619                 } else {
8620                         ipr_cmd->job_step = ioa_cfg->reset;
8621                         dev_err(&ioa_cfg->pdev->dev,
8622                                 "Timed out waiting to lock config access. Resetting anyway.\n");
8623                 }
8624         }
8625
8626         return rc;
8627 }
8628
8629 /**
8630  * ipr_reset_block_config_access - Block config access to the IOA
8631  * @ipr_cmd:    ipr command struct
8632  *
8633  * Description: This attempts to block config access to the IOA
8634  *
8635  * Return value:
8636  *      IPR_RC_JOB_CONTINUE
8637  **/
8638 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8639 {
8640         ipr_cmd->ioa_cfg->cfg_locked = 0;
8641         ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8642         ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8643         return IPR_RC_JOB_CONTINUE;
8644 }
8645
8646 /**
8647  * ipr_reset_allowed - Query whether or not IOA can be reset
8648  * @ioa_cfg:    ioa config struct
8649  *
8650  * Return value:
8651  *      0 if reset not allowed / non-zero if reset is allowed
8652  **/
8653 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8654 {
8655         volatile u32 temp_reg;
8656
8657         temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8658         return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8659 }
8660
8661 /**
8662  * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8663  * @ipr_cmd:    ipr command struct
8664  *
8665  * Description: This function waits for adapter permission to run BIST,
8666  * then runs BIST. If the adapter does not give permission after a
8667  * reasonable time, we will reset the adapter anyway. The impact of
8668  * resetting the adapter without warning the adapter is the risk of
8669  * losing the persistent error log on the adapter. If the adapter is
8670  * reset while it is writing to the flash on the adapter, the flash
8671  * segment will have bad ECC and be zeroed.
8672  *
8673  * Return value:
8674  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8675  **/
8676 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8677 {
8678         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8679         int rc = IPR_RC_JOB_RETURN;
8680
8681         if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8682                 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8683                 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8684         } else {
8685                 ipr_cmd->job_step = ipr_reset_block_config_access;
8686                 rc = IPR_RC_JOB_CONTINUE;
8687         }
8688
8689         return rc;
8690 }
8691
8692 /**
8693  * ipr_reset_alert - Alert the adapter of a pending reset
8694  * @ipr_cmd:    ipr command struct
8695  *
8696  * Description: This function alerts the adapter that it will be reset.
8697  * If memory space is not currently enabled, proceed directly
8698  * to running BIST on the adapter. The timer must always be started
8699  * so we guarantee we do not run BIST from ipr_isr.
8700  *
8701  * Return value:
8702  *      IPR_RC_JOB_RETURN
8703  **/
8704 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8705 {
8706         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8707         u16 cmd_reg;
8708         int rc;
8709
8710         ENTER;
8711         rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8712
8713         if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8714                 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8715                 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8716                 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8717         } else {
8718                 ipr_cmd->job_step = ipr_reset_block_config_access;
8719         }
8720
8721         ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8722         ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8723
8724         LEAVE;
8725         return IPR_RC_JOB_RETURN;
8726 }
8727
8728 /**
8729  * ipr_reset_quiesce_done - Complete IOA disconnect
8730  * @ipr_cmd:    ipr command struct
8731  *
8732  * Description: Freeze the adapter to complete quiesce processing
8733  *
8734  * Return value:
8735  *      IPR_RC_JOB_CONTINUE
8736  **/
8737 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8738 {
8739         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8740
8741         ENTER;
8742         ipr_cmd->job_step = ipr_ioa_bringdown_done;
8743         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8744         LEAVE;
8745         return IPR_RC_JOB_CONTINUE;
8746 }
8747
8748 /**
8749  * ipr_reset_cancel_hcam_done - Check for outstanding commands
8750  * @ipr_cmd:    ipr command struct
8751  *
8752  * Description: Ensure nothing is outstanding to the IOA and
8753  *                      proceed with IOA disconnect. Otherwise reset the IOA.
8754  *
8755  * Return value:
8756  *      IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8757  **/
8758 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8759 {
8760         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8761         struct ipr_cmnd *loop_cmd;
8762         struct ipr_hrr_queue *hrrq;
8763         int rc = IPR_RC_JOB_CONTINUE;
8764         int count = 0;
8765
8766         ENTER;
8767         ipr_cmd->job_step = ipr_reset_quiesce_done;
8768
8769         for_each_hrrq(hrrq, ioa_cfg) {
8770                 spin_lock(&hrrq->_lock);
8771                 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8772                         count++;
8773                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8774                         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8775                         rc = IPR_RC_JOB_RETURN;
8776                         break;
8777                 }
8778                 spin_unlock(&hrrq->_lock);
8779
8780                 if (count)
8781                         break;
8782         }
8783
8784         LEAVE;
8785         return rc;
8786 }
8787
8788 /**
8789  * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8790  * @ipr_cmd:    ipr command struct
8791  *
8792  * Description: Cancel any oustanding HCAMs to the IOA.
8793  *
8794  * Return value:
8795  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8796  **/
8797 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
8798 {
8799         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8800         int rc = IPR_RC_JOB_CONTINUE;
8801         struct ipr_cmd_pkt *cmd_pkt;
8802         struct ipr_cmnd *hcam_cmd;
8803         struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
8804
8805         ENTER;
8806         ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
8807
8808         if (!hrrq->ioa_is_dead) {
8809                 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
8810                         list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
8811                                 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
8812                                         continue;
8813
8814                                 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8815                                 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8816                                 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
8817                                 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
8818                                 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
8819                                 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
8820                                 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
8821                                 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
8822                                 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
8823                                 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
8824                                 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
8825                                 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
8826                                 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
8827                                 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
8828
8829                                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8830                                            IPR_CANCEL_TIMEOUT);
8831
8832                                 rc = IPR_RC_JOB_RETURN;
8833                                 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8834                                 break;
8835                         }
8836                 }
8837         } else
8838                 ipr_cmd->job_step = ipr_reset_alert;
8839
8840         LEAVE;
8841         return rc;
8842 }
8843
8844 /**
8845  * ipr_reset_ucode_download_done - Microcode download completion
8846  * @ipr_cmd:    ipr command struct
8847  *
8848  * Description: This function unmaps the microcode download buffer.
8849  *
8850  * Return value:
8851  *      IPR_RC_JOB_CONTINUE
8852  **/
8853 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8854 {
8855         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8856         struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8857
8858         dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
8859                      sglist->num_sg, DMA_TO_DEVICE);
8860
8861         ipr_cmd->job_step = ipr_reset_alert;
8862         return IPR_RC_JOB_CONTINUE;
8863 }
8864
8865 /**
8866  * ipr_reset_ucode_download - Download microcode to the adapter
8867  * @ipr_cmd:    ipr command struct
8868  *
8869  * Description: This function checks to see if it there is microcode
8870  * to download to the adapter. If there is, a download is performed.
8871  *
8872  * Return value:
8873  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8874  **/
8875 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8876 {
8877         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8878         struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8879
8880         ENTER;
8881         ipr_cmd->job_step = ipr_reset_alert;
8882
8883         if (!sglist)
8884                 return IPR_RC_JOB_CONTINUE;
8885
8886         ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8887         ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8888         ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8889         ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8890         ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8891         ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8892         ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8893
8894         if (ioa_cfg->sis64)
8895                 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8896         else
8897                 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8898         ipr_cmd->job_step = ipr_reset_ucode_download_done;
8899
8900         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8901                    IPR_WRITE_BUFFER_TIMEOUT);
8902
8903         LEAVE;
8904         return IPR_RC_JOB_RETURN;
8905 }
8906
8907 /**
8908  * ipr_reset_shutdown_ioa - Shutdown the adapter
8909  * @ipr_cmd:    ipr command struct
8910  *
8911  * Description: This function issues an adapter shutdown of the
8912  * specified type to the specified adapter as part of the
8913  * adapter reset job.
8914  *
8915  * Return value:
8916  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8917  **/
8918 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8919 {
8920         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8921         enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8922         unsigned long timeout;
8923         int rc = IPR_RC_JOB_CONTINUE;
8924
8925         ENTER;
8926         if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
8927                 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8928         else if (shutdown_type != IPR_SHUTDOWN_NONE &&
8929                         !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8930                 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8931                 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8932                 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8933                 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8934
8935                 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8936                         timeout = IPR_SHUTDOWN_TIMEOUT;
8937                 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8938                         timeout = IPR_INTERNAL_TIMEOUT;
8939                 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8940                         timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8941                 else
8942                         timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8943
8944                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8945
8946                 rc = IPR_RC_JOB_RETURN;
8947                 ipr_cmd->job_step = ipr_reset_ucode_download;
8948         } else
8949                 ipr_cmd->job_step = ipr_reset_alert;
8950
8951         LEAVE;
8952         return rc;
8953 }
8954
8955 /**
8956  * ipr_reset_ioa_job - Adapter reset job
8957  * @ipr_cmd:    ipr command struct
8958  *
8959  * Description: This function is the job router for the adapter reset job.
8960  *
8961  * Return value:
8962  *      none
8963  **/
8964 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8965 {
8966         u32 rc, ioasc;
8967         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8968
8969         do {
8970                 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8971
8972                 if (ioa_cfg->reset_cmd != ipr_cmd) {
8973                         /*
8974                          * We are doing nested adapter resets and this is
8975                          * not the current reset job.
8976                          */
8977                         list_add_tail(&ipr_cmd->queue,
8978                                         &ipr_cmd->hrrq->hrrq_free_q);
8979                         return;
8980                 }
8981
8982                 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8983                         rc = ipr_cmd->job_step_failed(ipr_cmd);
8984                         if (rc == IPR_RC_JOB_RETURN)
8985                                 return;
8986                 }
8987
8988                 ipr_reinit_ipr_cmnd(ipr_cmd);
8989                 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8990                 rc = ipr_cmd->job_step(ipr_cmd);
8991         } while (rc == IPR_RC_JOB_CONTINUE);
8992 }
8993
8994 /**
8995  * _ipr_initiate_ioa_reset - Initiate an adapter reset
8996  * @ioa_cfg:            ioa config struct
8997  * @job_step:           first job step of reset job
8998  * @shutdown_type:      shutdown type
8999  *
9000  * Description: This function will initiate the reset of the given adapter
9001  * starting at the selected job step.
9002  * If the caller needs to wait on the completion of the reset,
9003  * the caller must sleep on the reset_wait_q.
9004  *
9005  * Return value:
9006  *      none
9007  **/
9008 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9009                                     int (*job_step) (struct ipr_cmnd *),
9010                                     enum ipr_shutdown_type shutdown_type)
9011 {
9012         struct ipr_cmnd *ipr_cmd;
9013         int i;
9014
9015         ioa_cfg->in_reset_reload = 1;
9016         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9017                 spin_lock(&ioa_cfg->hrrq[i]._lock);
9018                 ioa_cfg->hrrq[i].allow_cmds = 0;
9019                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9020         }
9021         wmb();
9022         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
9023                 scsi_block_requests(ioa_cfg->host);
9024
9025         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9026         ioa_cfg->reset_cmd = ipr_cmd;
9027         ipr_cmd->job_step = job_step;
9028         ipr_cmd->u.shutdown_type = shutdown_type;
9029
9030         ipr_reset_ioa_job(ipr_cmd);
9031 }
9032
9033 /**
9034  * ipr_initiate_ioa_reset - Initiate an adapter reset
9035  * @ioa_cfg:            ioa config struct
9036  * @shutdown_type:      shutdown type
9037  *
9038  * Description: This function will initiate the reset of the given adapter.
9039  * If the caller needs to wait on the completion of the reset,
9040  * the caller must sleep on the reset_wait_q.
9041  *
9042  * Return value:
9043  *      none
9044  **/
9045 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9046                                    enum ipr_shutdown_type shutdown_type)
9047 {
9048         int i;
9049
9050         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9051                 return;
9052
9053         if (ioa_cfg->in_reset_reload) {
9054                 if (ioa_cfg->sdt_state == GET_DUMP)
9055                         ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9056                 else if (ioa_cfg->sdt_state == READ_DUMP)
9057                         ioa_cfg->sdt_state = ABORT_DUMP;
9058         }
9059
9060         if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9061                 dev_err(&ioa_cfg->pdev->dev,
9062                         "IOA taken offline - error recovery failed\n");
9063
9064                 ioa_cfg->reset_retries = 0;
9065                 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9066                         spin_lock(&ioa_cfg->hrrq[i]._lock);
9067                         ioa_cfg->hrrq[i].ioa_is_dead = 1;
9068                         spin_unlock(&ioa_cfg->hrrq[i]._lock);
9069                 }
9070                 wmb();
9071
9072                 if (ioa_cfg->in_ioa_bringdown) {
9073                         ioa_cfg->reset_cmd = NULL;
9074                         ioa_cfg->in_reset_reload = 0;
9075                         ipr_fail_all_ops(ioa_cfg);
9076                         wake_up_all(&ioa_cfg->reset_wait_q);
9077
9078                         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9079                                 spin_unlock_irq(ioa_cfg->host->host_lock);
9080                                 scsi_unblock_requests(ioa_cfg->host);
9081                                 spin_lock_irq(ioa_cfg->host->host_lock);
9082                         }
9083                         return;
9084                 } else {
9085                         ioa_cfg->in_ioa_bringdown = 1;
9086                         shutdown_type = IPR_SHUTDOWN_NONE;
9087                 }
9088         }
9089
9090         _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9091                                 shutdown_type);
9092 }
9093
9094 /**
9095  * ipr_reset_freeze - Hold off all I/O activity
9096  * @ipr_cmd:    ipr command struct
9097  *
9098  * Description: If the PCI slot is frozen, hold off all I/O
9099  * activity; then, as soon as the slot is available again,
9100  * initiate an adapter reset.
9101  */
9102 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9103 {
9104         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9105         int i;
9106
9107         /* Disallow new interrupts, avoid loop */
9108         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9109                 spin_lock(&ioa_cfg->hrrq[i]._lock);
9110                 ioa_cfg->hrrq[i].allow_interrupts = 0;
9111                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9112         }
9113         wmb();
9114         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9115         ipr_cmd->done = ipr_reset_ioa_job;
9116         return IPR_RC_JOB_RETURN;
9117 }
9118
9119 /**
9120  * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9121  * @pdev:       PCI device struct
9122  *
9123  * Description: This routine is called to tell us that the MMIO
9124  * access to the IOA has been restored
9125  */
9126 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9127 {
9128         unsigned long flags = 0;
9129         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9130
9131         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9132         if (!ioa_cfg->probe_done)
9133                 pci_save_state(pdev);
9134         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9135         return PCI_ERS_RESULT_NEED_RESET;
9136 }
9137
9138 /**
9139  * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9140  * @pdev:       PCI device struct
9141  *
9142  * Description: This routine is called to tell us that the PCI bus
9143  * is down. Can't do anything here, except put the device driver
9144  * into a holding pattern, waiting for the PCI bus to come back.
9145  */
9146 static void ipr_pci_frozen(struct pci_dev *pdev)
9147 {
9148         unsigned long flags = 0;
9149         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9150
9151         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9152         if (ioa_cfg->probe_done)
9153                 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9154         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9155 }
9156
9157 /**
9158  * ipr_pci_slot_reset - Called when PCI slot has been reset.
9159  * @pdev:       PCI device struct
9160  *
9161  * Description: This routine is called by the pci error recovery
9162  * code after the PCI slot has been reset, just before we
9163  * should resume normal operations.
9164  */
9165 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9166 {
9167         unsigned long flags = 0;
9168         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9169
9170         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9171         if (ioa_cfg->probe_done) {
9172                 if (ioa_cfg->needs_warm_reset)
9173                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9174                 else
9175                         _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9176                                                 IPR_SHUTDOWN_NONE);
9177         } else
9178                 wake_up_all(&ioa_cfg->eeh_wait_q);
9179         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9180         return PCI_ERS_RESULT_RECOVERED;
9181 }
9182
9183 /**
9184  * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9185  * @pdev:       PCI device struct
9186  *
9187  * Description: This routine is called when the PCI bus has
9188  * permanently failed.
9189  */
9190 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9191 {
9192         unsigned long flags = 0;
9193         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9194         int i;
9195
9196         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9197         if (ioa_cfg->probe_done) {
9198                 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9199                         ioa_cfg->sdt_state = ABORT_DUMP;
9200                 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9201                 ioa_cfg->in_ioa_bringdown = 1;
9202                 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9203                         spin_lock(&ioa_cfg->hrrq[i]._lock);
9204                         ioa_cfg->hrrq[i].allow_cmds = 0;
9205                         spin_unlock(&ioa_cfg->hrrq[i]._lock);
9206                 }
9207                 wmb();
9208                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9209         } else
9210                 wake_up_all(&ioa_cfg->eeh_wait_q);
9211         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9212 }
9213
9214 /**
9215  * ipr_pci_error_detected - Called when a PCI error is detected.
9216  * @pdev:       PCI device struct
9217  * @state:      PCI channel state
9218  *
9219  * Description: Called when a PCI error is detected.
9220  *
9221  * Return value:
9222  *      PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9223  */
9224 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9225                                                pci_channel_state_t state)
9226 {
9227         switch (state) {
9228         case pci_channel_io_frozen:
9229                 ipr_pci_frozen(pdev);
9230                 return PCI_ERS_RESULT_CAN_RECOVER;
9231         case pci_channel_io_perm_failure:
9232                 ipr_pci_perm_failure(pdev);
9233                 return PCI_ERS_RESULT_DISCONNECT;
9234                 break;
9235         default:
9236                 break;
9237         }
9238         return PCI_ERS_RESULT_NEED_RESET;
9239 }
9240
9241 /**
9242  * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9243  * @ioa_cfg:    ioa cfg struct
9244  *
9245  * Description: This is the second phase of adapter intialization
9246  * This function takes care of initilizing the adapter to the point
9247  * where it can accept new commands.
9248
9249  * Return value:
9250  *      0 on success / -EIO on failure
9251  **/
9252 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9253 {
9254         int rc = 0;
9255         unsigned long host_lock_flags = 0;
9256
9257         ENTER;
9258         spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9259         dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9260         ioa_cfg->probe_done = 1;
9261         if (ioa_cfg->needs_hard_reset) {
9262                 ioa_cfg->needs_hard_reset = 0;
9263                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9264         } else
9265                 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9266                                         IPR_SHUTDOWN_NONE);
9267         spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9268
9269         LEAVE;
9270         return rc;
9271 }
9272
9273 /**
9274  * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9275  * @ioa_cfg:    ioa config struct
9276  *
9277  * Return value:
9278  *      none
9279  **/
9280 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9281 {
9282         int i;
9283
9284         if (ioa_cfg->ipr_cmnd_list) {
9285                 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9286                         if (ioa_cfg->ipr_cmnd_list[i])
9287                                 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9288                                               ioa_cfg->ipr_cmnd_list[i],
9289                                               ioa_cfg->ipr_cmnd_list_dma[i]);
9290
9291                         ioa_cfg->ipr_cmnd_list[i] = NULL;
9292                 }
9293         }
9294
9295         if (ioa_cfg->ipr_cmd_pool)
9296                 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9297
9298         kfree(ioa_cfg->ipr_cmnd_list);
9299         kfree(ioa_cfg->ipr_cmnd_list_dma);
9300         ioa_cfg->ipr_cmnd_list = NULL;
9301         ioa_cfg->ipr_cmnd_list_dma = NULL;
9302         ioa_cfg->ipr_cmd_pool = NULL;
9303 }
9304
9305 /**
9306  * ipr_free_mem - Frees memory allocated for an adapter
9307  * @ioa_cfg:    ioa cfg struct
9308  *
9309  * Return value:
9310  *      nothing
9311  **/
9312 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9313 {
9314         int i;
9315
9316         kfree(ioa_cfg->res_entries);
9317         dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9318                           ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9319         ipr_free_cmd_blks(ioa_cfg);
9320
9321         for (i = 0; i < ioa_cfg->hrrq_num; i++)
9322                 dma_free_coherent(&ioa_cfg->pdev->dev,
9323                                   sizeof(u32) * ioa_cfg->hrrq[i].size,
9324                                   ioa_cfg->hrrq[i].host_rrq,
9325                                   ioa_cfg->hrrq[i].host_rrq_dma);
9326
9327         dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9328                           ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9329
9330         for (i = 0; i < IPR_NUM_HCAMS; i++) {
9331                 dma_free_coherent(&ioa_cfg->pdev->dev,
9332                                   sizeof(struct ipr_hostrcb),
9333                                   ioa_cfg->hostrcb[i],
9334                                   ioa_cfg->hostrcb_dma[i]);
9335         }
9336
9337         ipr_free_dump(ioa_cfg);
9338         kfree(ioa_cfg->trace);
9339 }
9340
9341 /**
9342  * ipr_free_irqs - Free all allocated IRQs for the adapter.
9343  * @ioa_cfg:    ipr cfg struct
9344  *
9345  * This function frees all allocated IRQs for the
9346  * specified adapter.
9347  *
9348  * Return value:
9349  *      none
9350  **/
9351 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9352 {
9353         struct pci_dev *pdev = ioa_cfg->pdev;
9354
9355         if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9356             ioa_cfg->intr_flag == IPR_USE_MSIX) {
9357                 int i;
9358                 for (i = 0; i < ioa_cfg->nvectors; i++)
9359                         free_irq(ioa_cfg->vectors_info[i].vec,
9360                                  &ioa_cfg->hrrq[i]);
9361         } else
9362                 free_irq(pdev->irq, &ioa_cfg->hrrq[0]);
9363
9364         if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9365                 pci_disable_msi(pdev);
9366                 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9367         } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9368                 pci_disable_msix(pdev);
9369                 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9370         }
9371 }
9372
9373 /**
9374  * ipr_free_all_resources - Free all allocated resources for an adapter.
9375  * @ipr_cmd:    ipr command struct
9376  *
9377  * This function frees all allocated resources for the
9378  * specified adapter.
9379  *
9380  * Return value:
9381  *      none
9382  **/
9383 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9384 {
9385         struct pci_dev *pdev = ioa_cfg->pdev;
9386
9387         ENTER;
9388         ipr_free_irqs(ioa_cfg);
9389         if (ioa_cfg->reset_work_q)
9390                 destroy_workqueue(ioa_cfg->reset_work_q);
9391         iounmap(ioa_cfg->hdw_dma_regs);
9392         pci_release_regions(pdev);
9393         ipr_free_mem(ioa_cfg);
9394         scsi_host_put(ioa_cfg->host);
9395         pci_disable_device(pdev);
9396         LEAVE;
9397 }
9398
9399 /**
9400  * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9401  * @ioa_cfg:    ioa config struct
9402  *
9403  * Return value:
9404  *      0 on success / -ENOMEM on allocation failure
9405  **/
9406 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9407 {
9408         struct ipr_cmnd *ipr_cmd;
9409         struct ipr_ioarcb *ioarcb;
9410         dma_addr_t dma_addr;
9411         int i, entries_each_hrrq, hrrq_id = 0;
9412
9413         ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9414                                                 sizeof(struct ipr_cmnd), 512, 0);
9415
9416         if (!ioa_cfg->ipr_cmd_pool)
9417                 return -ENOMEM;
9418
9419         ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9420         ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9421
9422         if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9423                 ipr_free_cmd_blks(ioa_cfg);
9424                 return -ENOMEM;
9425         }
9426
9427         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9428                 if (ioa_cfg->hrrq_num > 1) {
9429                         if (i == 0) {
9430                                 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9431                                 ioa_cfg->hrrq[i].min_cmd_id = 0;
9432                                         ioa_cfg->hrrq[i].max_cmd_id =
9433                                                 (entries_each_hrrq - 1);
9434                         } else {
9435                                 entries_each_hrrq =
9436                                         IPR_NUM_BASE_CMD_BLKS/
9437                                         (ioa_cfg->hrrq_num - 1);
9438                                 ioa_cfg->hrrq[i].min_cmd_id =
9439                                         IPR_NUM_INTERNAL_CMD_BLKS +
9440                                         (i - 1) * entries_each_hrrq;
9441                                 ioa_cfg->hrrq[i].max_cmd_id =
9442                                         (IPR_NUM_INTERNAL_CMD_BLKS +
9443                                         i * entries_each_hrrq - 1);
9444                         }
9445                 } else {
9446                         entries_each_hrrq = IPR_NUM_CMD_BLKS;
9447                         ioa_cfg->hrrq[i].min_cmd_id = 0;
9448                         ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9449                 }
9450                 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9451         }
9452
9453         BUG_ON(ioa_cfg->hrrq_num == 0);
9454
9455         i = IPR_NUM_CMD_BLKS -
9456                 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9457         if (i > 0) {
9458                 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9459                 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9460         }
9461
9462         for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9463                 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9464
9465                 if (!ipr_cmd) {
9466                         ipr_free_cmd_blks(ioa_cfg);
9467                         return -ENOMEM;
9468                 }
9469
9470                 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9471                 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9472                 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9473
9474                 ioarcb = &ipr_cmd->ioarcb;
9475                 ipr_cmd->dma_addr = dma_addr;
9476                 if (ioa_cfg->sis64)
9477                         ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9478                 else
9479                         ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9480
9481                 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9482                 if (ioa_cfg->sis64) {
9483                         ioarcb->u.sis64_addr_data.data_ioadl_addr =
9484                                 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9485                         ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9486                                 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9487                 } else {
9488                         ioarcb->write_ioadl_addr =
9489                                 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9490                         ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9491                         ioarcb->ioasa_host_pci_addr =
9492                                 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9493                 }
9494                 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9495                 ipr_cmd->cmd_index = i;
9496                 ipr_cmd->ioa_cfg = ioa_cfg;
9497                 ipr_cmd->sense_buffer_dma = dma_addr +
9498                         offsetof(struct ipr_cmnd, sense_buffer);
9499
9500                 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9501                 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9502                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9503                 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9504                         hrrq_id++;
9505         }
9506
9507         return 0;
9508 }
9509
9510 /**
9511  * ipr_alloc_mem - Allocate memory for an adapter
9512  * @ioa_cfg:    ioa config struct
9513  *
9514  * Return value:
9515  *      0 on success / non-zero for error
9516  **/
9517 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9518 {
9519         struct pci_dev *pdev = ioa_cfg->pdev;
9520         int i, rc = -ENOMEM;
9521
9522         ENTER;
9523         ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9524                                        ioa_cfg->max_devs_supported, GFP_KERNEL);
9525
9526         if (!ioa_cfg->res_entries)
9527                 goto out;
9528
9529         for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9530                 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9531                 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9532         }
9533
9534         ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9535                                               sizeof(struct ipr_misc_cbs),
9536                                               &ioa_cfg->vpd_cbs_dma,
9537                                               GFP_KERNEL);
9538
9539         if (!ioa_cfg->vpd_cbs)
9540                 goto out_free_res_entries;
9541
9542         if (ipr_alloc_cmd_blks(ioa_cfg))
9543                 goto out_free_vpd_cbs;
9544
9545         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9546                 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9547                                         sizeof(u32) * ioa_cfg->hrrq[i].size,
9548                                         &ioa_cfg->hrrq[i].host_rrq_dma,
9549                                         GFP_KERNEL);
9550
9551                 if (!ioa_cfg->hrrq[i].host_rrq)  {
9552                         while (--i > 0)
9553                                 dma_free_coherent(&pdev->dev,
9554                                         sizeof(u32) * ioa_cfg->hrrq[i].size,
9555                                         ioa_cfg->hrrq[i].host_rrq,
9556                                         ioa_cfg->hrrq[i].host_rrq_dma);
9557                         goto out_ipr_free_cmd_blocks;
9558                 }
9559                 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9560         }
9561
9562         ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9563                                                   ioa_cfg->cfg_table_size,
9564                                                   &ioa_cfg->cfg_table_dma,
9565                                                   GFP_KERNEL);
9566
9567         if (!ioa_cfg->u.cfg_table)
9568                 goto out_free_host_rrq;
9569
9570         for (i = 0; i < IPR_NUM_HCAMS; i++) {
9571                 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9572                                                          sizeof(struct ipr_hostrcb),
9573                                                          &ioa_cfg->hostrcb_dma[i],
9574                                                          GFP_KERNEL);
9575
9576                 if (!ioa_cfg->hostrcb[i])
9577                         goto out_free_hostrcb_dma;
9578
9579                 ioa_cfg->hostrcb[i]->hostrcb_dma =
9580                         ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9581                 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9582                 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9583         }
9584
9585         ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9586                                  IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9587
9588         if (!ioa_cfg->trace)
9589                 goto out_free_hostrcb_dma;
9590
9591         rc = 0;
9592 out:
9593         LEAVE;
9594         return rc;
9595
9596 out_free_hostrcb_dma:
9597         while (i-- > 0) {
9598                 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9599                                   ioa_cfg->hostrcb[i],
9600                                   ioa_cfg->hostrcb_dma[i]);
9601         }
9602         dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9603                           ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9604 out_free_host_rrq:
9605         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9606                 dma_free_coherent(&pdev->dev,
9607                                   sizeof(u32) * ioa_cfg->hrrq[i].size,
9608                                   ioa_cfg->hrrq[i].host_rrq,
9609                                   ioa_cfg->hrrq[i].host_rrq_dma);
9610         }
9611 out_ipr_free_cmd_blocks:
9612         ipr_free_cmd_blks(ioa_cfg);
9613 out_free_vpd_cbs:
9614         dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9615                           ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9616 out_free_res_entries:
9617         kfree(ioa_cfg->res_entries);
9618         goto out;
9619 }
9620
9621 /**
9622  * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9623  * @ioa_cfg:    ioa config struct
9624  *
9625  * Return value:
9626  *      none
9627  **/
9628 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9629 {
9630         int i;
9631
9632         for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9633                 ioa_cfg->bus_attr[i].bus = i;
9634                 ioa_cfg->bus_attr[i].qas_enabled = 0;
9635                 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9636                 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9637                         ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9638                 else
9639                         ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9640         }
9641 }
9642
9643 /**
9644  * ipr_init_regs - Initialize IOA registers
9645  * @ioa_cfg:    ioa config struct
9646  *
9647  * Return value:
9648  *      none
9649  **/
9650 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9651 {
9652         const struct ipr_interrupt_offsets *p;
9653         struct ipr_interrupts *t;
9654         void __iomem *base;
9655
9656         p = &ioa_cfg->chip_cfg->regs;
9657         t = &ioa_cfg->regs;
9658         base = ioa_cfg->hdw_dma_regs;
9659
9660         t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9661         t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9662         t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9663         t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9664         t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9665         t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9666         t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9667         t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9668         t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9669         t->ioarrin_reg = base + p->ioarrin_reg;
9670         t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9671         t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9672         t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9673         t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9674         t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9675         t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9676
9677         if (ioa_cfg->sis64) {
9678                 t->init_feedback_reg = base + p->init_feedback_reg;
9679                 t->dump_addr_reg = base + p->dump_addr_reg;
9680                 t->dump_data_reg = base + p->dump_data_reg;
9681                 t->endian_swap_reg = base + p->endian_swap_reg;
9682         }
9683 }
9684
9685 /**
9686  * ipr_init_ioa_cfg - Initialize IOA config struct
9687  * @ioa_cfg:    ioa config struct
9688  * @host:               scsi host struct
9689  * @pdev:               PCI dev struct
9690  *
9691  * Return value:
9692  *      none
9693  **/
9694 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9695                              struct Scsi_Host *host, struct pci_dev *pdev)
9696 {
9697         int i;
9698
9699         ioa_cfg->host = host;
9700         ioa_cfg->pdev = pdev;
9701         ioa_cfg->log_level = ipr_log_level;
9702         ioa_cfg->doorbell = IPR_DOORBELL;
9703         sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9704         sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9705         sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9706         sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9707         sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9708         sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9709
9710         INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9711         INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9712         INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9713         INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9714         INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9715         init_waitqueue_head(&ioa_cfg->reset_wait_q);
9716         init_waitqueue_head(&ioa_cfg->msi_wait_q);
9717         init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9718         ioa_cfg->sdt_state = INACTIVE;
9719
9720         ipr_initialize_bus_attr(ioa_cfg);
9721         ioa_cfg->max_devs_supported = ipr_max_devs;
9722
9723         if (ioa_cfg->sis64) {
9724                 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9725                 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9726                 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9727                         ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9728                 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9729                                            + ((sizeof(struct ipr_config_table_entry64)
9730                                                * ioa_cfg->max_devs_supported)));
9731         } else {
9732                 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9733                 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9734                 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9735                         ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9736                 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9737                                            + ((sizeof(struct ipr_config_table_entry)
9738                                                * ioa_cfg->max_devs_supported)));
9739         }
9740
9741         host->max_channel = IPR_VSET_BUS;
9742         host->unique_id = host->host_no;
9743         host->max_cmd_len = IPR_MAX_CDB_LEN;
9744         host->can_queue = ioa_cfg->max_cmds;
9745         pci_set_drvdata(pdev, ioa_cfg);
9746
9747         for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9748                 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9749                 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9750                 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9751                 if (i == 0)
9752                         ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9753                 else
9754                         ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9755         }
9756 }
9757
9758 /**
9759  * ipr_get_chip_info - Find adapter chip information
9760  * @dev_id:             PCI device id struct
9761  *
9762  * Return value:
9763  *      ptr to chip information on success / NULL on failure
9764  **/
9765 static const struct ipr_chip_t *
9766 ipr_get_chip_info(const struct pci_device_id *dev_id)
9767 {
9768         int i;
9769
9770         for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9771                 if (ipr_chip[i].vendor == dev_id->vendor &&
9772                     ipr_chip[i].device == dev_id->device)
9773                         return &ipr_chip[i];
9774         return NULL;
9775 }
9776
9777 /**
9778  * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9779  *                                              during probe time
9780  * @ioa_cfg:    ioa config struct
9781  *
9782  * Return value:
9783  *      None
9784  **/
9785 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9786 {
9787         struct pci_dev *pdev = ioa_cfg->pdev;
9788
9789         if (pci_channel_offline(pdev)) {
9790                 wait_event_timeout(ioa_cfg->eeh_wait_q,
9791                                    !pci_channel_offline(pdev),
9792                                    IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9793                 pci_restore_state(pdev);
9794         }
9795 }
9796
9797 static int ipr_enable_msix(struct ipr_ioa_cfg *ioa_cfg)
9798 {
9799         struct msix_entry entries[IPR_MAX_MSIX_VECTORS];
9800         int i, vectors;
9801
9802         for (i = 0; i < ARRAY_SIZE(entries); ++i)
9803                 entries[i].entry = i;
9804
9805         vectors = pci_enable_msix_range(ioa_cfg->pdev,
9806                                         entries, 1, ipr_number_of_msix);
9807         if (vectors < 0) {
9808                 ipr_wait_for_pci_err_recovery(ioa_cfg);
9809                 return vectors;
9810         }
9811
9812         for (i = 0; i < vectors; i++)
9813                 ioa_cfg->vectors_info[i].vec = entries[i].vector;
9814         ioa_cfg->nvectors = vectors;
9815
9816         return 0;
9817 }
9818
9819 static int ipr_enable_msi(struct ipr_ioa_cfg *ioa_cfg)
9820 {
9821         int i, vectors;
9822
9823         vectors = pci_enable_msi_range(ioa_cfg->pdev, 1, ipr_number_of_msix);
9824         if (vectors < 0) {
9825                 ipr_wait_for_pci_err_recovery(ioa_cfg);
9826                 return vectors;
9827         }
9828
9829         for (i = 0; i < vectors; i++)
9830                 ioa_cfg->vectors_info[i].vec = ioa_cfg->pdev->irq + i;
9831         ioa_cfg->nvectors = vectors;
9832
9833         return 0;
9834 }
9835
9836 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9837 {
9838         int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9839
9840         for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9841                 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9842                          "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9843                 ioa_cfg->vectors_info[vec_idx].
9844                         desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9845         }
9846 }
9847
9848 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg)
9849 {
9850         int i, rc;
9851
9852         for (i = 1; i < ioa_cfg->nvectors; i++) {
9853                 rc = request_irq(ioa_cfg->vectors_info[i].vec,
9854                         ipr_isr_mhrrq,
9855                         0,
9856                         ioa_cfg->vectors_info[i].desc,
9857                         &ioa_cfg->hrrq[i]);
9858                 if (rc) {
9859                         while (--i >= 0)
9860                                 free_irq(ioa_cfg->vectors_info[i].vec,
9861                                         &ioa_cfg->hrrq[i]);
9862                         return rc;
9863                 }
9864         }
9865         return 0;
9866 }
9867
9868 /**
9869  * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9870  * @pdev:               PCI device struct
9871  *
9872  * Description: Simply set the msi_received flag to 1 indicating that
9873  * Message Signaled Interrupts are supported.
9874  *
9875  * Return value:
9876  *      0 on success / non-zero on failure
9877  **/
9878 static irqreturn_t ipr_test_intr(int irq, void *devp)
9879 {
9880         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9881         unsigned long lock_flags = 0;
9882         irqreturn_t rc = IRQ_HANDLED;
9883
9884         dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9885         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9886
9887         ioa_cfg->msi_received = 1;
9888         wake_up(&ioa_cfg->msi_wait_q);
9889
9890         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9891         return rc;
9892 }
9893
9894 /**
9895  * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9896  * @pdev:               PCI device struct
9897  *
9898  * Description: The return value from pci_enable_msi_range() can not always be
9899  * trusted.  This routine sets up and initiates a test interrupt to determine
9900  * if the interrupt is received via the ipr_test_intr() service routine.
9901  * If the tests fails, the driver will fall back to LSI.
9902  *
9903  * Return value:
9904  *      0 on success / non-zero on failure
9905  **/
9906 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9907 {
9908         int rc;
9909         volatile u32 int_reg;
9910         unsigned long lock_flags = 0;
9911
9912         ENTER;
9913
9914         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9915         init_waitqueue_head(&ioa_cfg->msi_wait_q);
9916         ioa_cfg->msi_received = 0;
9917         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9918         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9919         int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9920         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9921
9922         if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9923                 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9924         else
9925                 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9926         if (rc) {
9927                 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
9928                 return rc;
9929         } else if (ipr_debug)
9930                 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
9931
9932         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9933         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9934         wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9935         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9936         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9937
9938         if (!ioa_cfg->msi_received) {
9939                 /* MSI test failed */
9940                 dev_info(&pdev->dev, "MSI test failed.  Falling back to LSI.\n");
9941                 rc = -EOPNOTSUPP;
9942         } else if (ipr_debug)
9943                 dev_info(&pdev->dev, "MSI test succeeded.\n");
9944
9945         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9946
9947         if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9948                 free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg);
9949         else
9950                 free_irq(pdev->irq, ioa_cfg);
9951
9952         LEAVE;
9953
9954         return rc;
9955 }
9956
9957  /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9958  * @pdev:               PCI device struct
9959  * @dev_id:             PCI device id struct
9960  *
9961  * Return value:
9962  *      0 on success / non-zero on failure
9963  **/
9964 static int ipr_probe_ioa(struct pci_dev *pdev,
9965                          const struct pci_device_id *dev_id)
9966 {
9967         struct ipr_ioa_cfg *ioa_cfg;
9968         struct Scsi_Host *host;
9969         unsigned long ipr_regs_pci;
9970         void __iomem *ipr_regs;
9971         int rc = PCIBIOS_SUCCESSFUL;
9972         volatile u32 mask, uproc, interrupts;
9973         unsigned long lock_flags, driver_lock_flags;
9974
9975         ENTER;
9976
9977         dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9978         host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9979
9980         if (!host) {
9981                 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9982                 rc = -ENOMEM;
9983                 goto out;
9984         }
9985
9986         ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9987         memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9988         ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
9989
9990         ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9991
9992         if (!ioa_cfg->ipr_chip) {
9993                 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9994                         dev_id->vendor, dev_id->device);
9995                 goto out_scsi_host_put;
9996         }
9997
9998         /* set SIS 32 or SIS 64 */
9999         ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
10000         ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
10001         ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
10002         ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
10003
10004         if (ipr_transop_timeout)
10005                 ioa_cfg->transop_timeout = ipr_transop_timeout;
10006         else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10007                 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10008         else
10009                 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10010
10011         ioa_cfg->revid = pdev->revision;
10012
10013         ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10014
10015         ipr_regs_pci = pci_resource_start(pdev, 0);
10016
10017         rc = pci_request_regions(pdev, IPR_NAME);
10018         if (rc < 0) {
10019                 dev_err(&pdev->dev,
10020                         "Couldn't register memory range of registers\n");
10021                 goto out_scsi_host_put;
10022         }
10023
10024         rc = pci_enable_device(pdev);
10025
10026         if (rc || pci_channel_offline(pdev)) {
10027                 if (pci_channel_offline(pdev)) {
10028                         ipr_wait_for_pci_err_recovery(ioa_cfg);
10029                         rc = pci_enable_device(pdev);
10030                 }
10031
10032                 if (rc) {
10033                         dev_err(&pdev->dev, "Cannot enable adapter\n");
10034                         ipr_wait_for_pci_err_recovery(ioa_cfg);
10035                         goto out_release_regions;
10036                 }
10037         }
10038
10039         ipr_regs = pci_ioremap_bar(pdev, 0);
10040
10041         if (!ipr_regs) {
10042                 dev_err(&pdev->dev,
10043                         "Couldn't map memory range of registers\n");
10044                 rc = -ENOMEM;
10045                 goto out_disable;
10046         }
10047
10048         ioa_cfg->hdw_dma_regs = ipr_regs;
10049         ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10050         ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10051
10052         ipr_init_regs(ioa_cfg);
10053
10054         if (ioa_cfg->sis64) {
10055                 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10056                 if (rc < 0) {
10057                         dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10058                         rc = dma_set_mask_and_coherent(&pdev->dev,
10059                                                        DMA_BIT_MASK(32));
10060                 }
10061         } else
10062                 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10063
10064         if (rc < 0) {
10065                 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10066                 goto cleanup_nomem;
10067         }
10068
10069         rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10070                                    ioa_cfg->chip_cfg->cache_line_size);
10071
10072         if (rc != PCIBIOS_SUCCESSFUL) {
10073                 dev_err(&pdev->dev, "Write of cache line size failed\n");
10074                 ipr_wait_for_pci_err_recovery(ioa_cfg);
10075                 rc = -EIO;
10076                 goto cleanup_nomem;
10077         }
10078
10079         /* Issue MMIO read to ensure card is not in EEH */
10080         interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10081         ipr_wait_for_pci_err_recovery(ioa_cfg);
10082
10083         if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10084                 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10085                         IPR_MAX_MSIX_VECTORS);
10086                 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10087         }
10088
10089         if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10090                         ipr_enable_msix(ioa_cfg) == 0)
10091                 ioa_cfg->intr_flag = IPR_USE_MSIX;
10092         else if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10093                         ipr_enable_msi(ioa_cfg) == 0)
10094                 ioa_cfg->intr_flag = IPR_USE_MSI;
10095         else {
10096                 ioa_cfg->intr_flag = IPR_USE_LSI;
10097                 ioa_cfg->clear_isr = 1;
10098                 ioa_cfg->nvectors = 1;
10099                 dev_info(&pdev->dev, "Cannot enable MSI.\n");
10100         }
10101
10102         pci_set_master(pdev);
10103
10104         if (pci_channel_offline(pdev)) {
10105                 ipr_wait_for_pci_err_recovery(ioa_cfg);
10106                 pci_set_master(pdev);
10107                 if (pci_channel_offline(pdev)) {
10108                         rc = -EIO;
10109                         goto out_msi_disable;
10110                 }
10111         }
10112
10113         if (ioa_cfg->intr_flag == IPR_USE_MSI ||
10114             ioa_cfg->intr_flag == IPR_USE_MSIX) {
10115                 rc = ipr_test_msi(ioa_cfg, pdev);
10116                 if (rc == -EOPNOTSUPP) {
10117                         ipr_wait_for_pci_err_recovery(ioa_cfg);
10118                         if (ioa_cfg->intr_flag == IPR_USE_MSI) {
10119                                 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
10120                                 pci_disable_msi(pdev);
10121                          } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
10122                                 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
10123                                 pci_disable_msix(pdev);
10124                         }
10125
10126                         ioa_cfg->intr_flag = IPR_USE_LSI;
10127                         ioa_cfg->nvectors = 1;
10128                 }
10129                 else if (rc)
10130                         goto out_msi_disable;
10131                 else {
10132                         if (ioa_cfg->intr_flag == IPR_USE_MSI)
10133                                 dev_info(&pdev->dev,
10134                                         "Request for %d MSIs succeeded with starting IRQ: %d\n",
10135                                         ioa_cfg->nvectors, pdev->irq);
10136                         else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10137                                 dev_info(&pdev->dev,
10138                                         "Request for %d MSIXs succeeded.",
10139                                         ioa_cfg->nvectors);
10140                 }
10141         }
10142
10143         ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10144                                 (unsigned int)num_online_cpus(),
10145                                 (unsigned int)IPR_MAX_HRRQ_NUM);
10146
10147         if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10148                 goto out_msi_disable;
10149
10150         if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10151                 goto out_msi_disable;
10152
10153         rc = ipr_alloc_mem(ioa_cfg);
10154         if (rc < 0) {
10155                 dev_err(&pdev->dev,
10156                         "Couldn't allocate enough memory for device driver!\n");
10157                 goto out_msi_disable;
10158         }
10159
10160         /* Save away PCI config space for use following IOA reset */
10161         rc = pci_save_state(pdev);
10162
10163         if (rc != PCIBIOS_SUCCESSFUL) {
10164                 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10165                 rc = -EIO;
10166                 goto cleanup_nolog;
10167         }
10168
10169         /*
10170          * If HRRQ updated interrupt is not masked, or reset alert is set,
10171          * the card is in an unknown state and needs a hard reset
10172          */
10173         mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10174         interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10175         uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10176         if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10177                 ioa_cfg->needs_hard_reset = 1;
10178         if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10179                 ioa_cfg->needs_hard_reset = 1;
10180         if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10181                 ioa_cfg->ioa_unit_checked = 1;
10182
10183         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10184         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10185         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10186
10187         if (ioa_cfg->intr_flag == IPR_USE_MSI
10188                         || ioa_cfg->intr_flag == IPR_USE_MSIX) {
10189                 name_msi_vectors(ioa_cfg);
10190                 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_isr,
10191                         0,
10192                         ioa_cfg->vectors_info[0].desc,
10193                         &ioa_cfg->hrrq[0]);
10194                 if (!rc)
10195                         rc = ipr_request_other_msi_irqs(ioa_cfg);
10196         } else {
10197                 rc = request_irq(pdev->irq, ipr_isr,
10198                          IRQF_SHARED,
10199                          IPR_NAME, &ioa_cfg->hrrq[0]);
10200         }
10201         if (rc) {
10202                 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10203                         pdev->irq, rc);
10204                 goto cleanup_nolog;
10205         }
10206
10207         if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10208             (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10209                 ioa_cfg->needs_warm_reset = 1;
10210                 ioa_cfg->reset = ipr_reset_slot_reset;
10211
10212                 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10213                                                                 WQ_MEM_RECLAIM, host->host_no);
10214
10215                 if (!ioa_cfg->reset_work_q) {
10216                         dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10217                         goto out_free_irq;
10218                 }
10219         } else
10220                 ioa_cfg->reset = ipr_reset_start_bist;
10221
10222         spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10223         list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10224         spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10225
10226         LEAVE;
10227 out:
10228         return rc;
10229
10230 out_free_irq:
10231         ipr_free_irqs(ioa_cfg);
10232 cleanup_nolog:
10233         ipr_free_mem(ioa_cfg);
10234 out_msi_disable:
10235         ipr_wait_for_pci_err_recovery(ioa_cfg);
10236         if (ioa_cfg->intr_flag == IPR_USE_MSI)
10237                 pci_disable_msi(pdev);
10238         else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10239                 pci_disable_msix(pdev);
10240 cleanup_nomem:
10241         iounmap(ipr_regs);
10242 out_disable:
10243         pci_disable_device(pdev);
10244 out_release_regions:
10245         pci_release_regions(pdev);
10246 out_scsi_host_put:
10247         scsi_host_put(host);
10248         goto out;
10249 }
10250
10251 /**
10252  * ipr_initiate_ioa_bringdown - Bring down an adapter
10253  * @ioa_cfg:            ioa config struct
10254  * @shutdown_type:      shutdown type
10255  *
10256  * Description: This function will initiate bringing down the adapter.
10257  * This consists of issuing an IOA shutdown to the adapter
10258  * to flush the cache, and running BIST.
10259  * If the caller needs to wait on the completion of the reset,
10260  * the caller must sleep on the reset_wait_q.
10261  *
10262  * Return value:
10263  *      none
10264  **/
10265 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10266                                        enum ipr_shutdown_type shutdown_type)
10267 {
10268         ENTER;
10269         if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10270                 ioa_cfg->sdt_state = ABORT_DUMP;
10271         ioa_cfg->reset_retries = 0;
10272         ioa_cfg->in_ioa_bringdown = 1;
10273         ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10274         LEAVE;
10275 }
10276
10277 /**
10278  * __ipr_remove - Remove a single adapter
10279  * @pdev:       pci device struct
10280  *
10281  * Adapter hot plug remove entry point.
10282  *
10283  * Return value:
10284  *      none
10285  **/
10286 static void __ipr_remove(struct pci_dev *pdev)
10287 {
10288         unsigned long host_lock_flags = 0;
10289         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10290         int i;
10291         unsigned long driver_lock_flags;
10292         ENTER;
10293
10294         spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10295         while (ioa_cfg->in_reset_reload) {
10296                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10297                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10298                 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10299         }
10300
10301         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10302                 spin_lock(&ioa_cfg->hrrq[i]._lock);
10303                 ioa_cfg->hrrq[i].removing_ioa = 1;
10304                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10305         }
10306         wmb();
10307         ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10308
10309         spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10310         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10311         flush_work(&ioa_cfg->work_q);
10312         if (ioa_cfg->reset_work_q)
10313                 flush_workqueue(ioa_cfg->reset_work_q);
10314         INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10315         spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10316
10317         spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10318         list_del(&ioa_cfg->queue);
10319         spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10320
10321         if (ioa_cfg->sdt_state == ABORT_DUMP)
10322                 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10323         spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10324
10325         ipr_free_all_resources(ioa_cfg);
10326
10327         LEAVE;
10328 }
10329
10330 /**
10331  * ipr_remove - IOA hot plug remove entry point
10332  * @pdev:       pci device struct
10333  *
10334  * Adapter hot plug remove entry point.
10335  *
10336  * Return value:
10337  *      none
10338  **/
10339 static void ipr_remove(struct pci_dev *pdev)
10340 {
10341         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10342
10343         ENTER;
10344
10345         ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10346                               &ipr_trace_attr);
10347         ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10348                              &ipr_dump_attr);
10349         scsi_remove_host(ioa_cfg->host);
10350
10351         __ipr_remove(pdev);
10352
10353         LEAVE;
10354 }
10355
10356 /**
10357  * ipr_probe - Adapter hot plug add entry point
10358  *
10359  * Return value:
10360  *      0 on success / non-zero on failure
10361  **/
10362 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10363 {
10364         struct ipr_ioa_cfg *ioa_cfg;
10365         int rc, i;
10366
10367         rc = ipr_probe_ioa(pdev, dev_id);
10368
10369         if (rc)
10370                 return rc;
10371
10372         ioa_cfg = pci_get_drvdata(pdev);
10373         rc = ipr_probe_ioa_part2(ioa_cfg);
10374
10375         if (rc) {
10376                 __ipr_remove(pdev);
10377                 return rc;
10378         }
10379
10380         rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10381
10382         if (rc) {
10383                 __ipr_remove(pdev);
10384                 return rc;
10385         }
10386
10387         rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10388                                    &ipr_trace_attr);
10389
10390         if (rc) {
10391                 scsi_remove_host(ioa_cfg->host);
10392                 __ipr_remove(pdev);
10393                 return rc;
10394         }
10395
10396         rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10397                                    &ipr_dump_attr);
10398
10399         if (rc) {
10400                 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10401                                       &ipr_trace_attr);
10402                 scsi_remove_host(ioa_cfg->host);
10403                 __ipr_remove(pdev);
10404                 return rc;
10405         }
10406
10407         scsi_scan_host(ioa_cfg->host);
10408         ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10409
10410         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10411                 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10412                         irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
10413                                         ioa_cfg->iopoll_weight, ipr_iopoll);
10414                 }
10415         }
10416
10417         schedule_work(&ioa_cfg->work_q);
10418         return 0;
10419 }
10420
10421 /**
10422  * ipr_shutdown - Shutdown handler.
10423  * @pdev:       pci device struct
10424  *
10425  * This function is invoked upon system shutdown/reboot. It will issue
10426  * an adapter shutdown to the adapter to flush the write cache.
10427  *
10428  * Return value:
10429  *      none
10430  **/
10431 static void ipr_shutdown(struct pci_dev *pdev)
10432 {
10433         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10434         unsigned long lock_flags = 0;
10435         enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10436         int i;
10437
10438         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10439         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10440                 ioa_cfg->iopoll_weight = 0;
10441                 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10442                         irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
10443         }
10444
10445         while (ioa_cfg->in_reset_reload) {
10446                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10447                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10448                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10449         }
10450
10451         if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10452                 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10453
10454         ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10455         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10456         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10457         if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10458                 ipr_free_irqs(ioa_cfg);
10459                 pci_disable_device(ioa_cfg->pdev);
10460         }
10461 }
10462
10463 static struct pci_device_id ipr_pci_table[] = {
10464         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10465                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10466         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10467                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10468         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10469                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10470         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10471                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10472         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10473                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10474         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10475                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10476         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10477                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10478         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10479                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10480                 IPR_USE_LONG_TRANSOP_TIMEOUT },
10481         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10482               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10483         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10484               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10485               IPR_USE_LONG_TRANSOP_TIMEOUT },
10486         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10487               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10488               IPR_USE_LONG_TRANSOP_TIMEOUT },
10489         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10490               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10491         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10492               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10493               IPR_USE_LONG_TRANSOP_TIMEOUT},
10494         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10495               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10496               IPR_USE_LONG_TRANSOP_TIMEOUT },
10497         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10498               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10499               IPR_USE_LONG_TRANSOP_TIMEOUT },
10500         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10501               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10502         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10503               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10504         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10505               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10506               IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10507         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10508                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10509         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10510                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10511         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10512                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10513                 IPR_USE_LONG_TRANSOP_TIMEOUT },
10514         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10515                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10516                 IPR_USE_LONG_TRANSOP_TIMEOUT },
10517         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10518                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10519         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10520                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10521         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10522                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10523         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10524                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10525         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10526                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10527         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10528                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10529         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10530                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10531         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10532                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10533         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10534                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10535         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10536                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10537         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10538                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10539         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10540                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10541         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10542                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10543         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10544                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10545         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10546                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10547         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10548                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10549         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10550                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10551         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10552                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10553         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10554                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10555         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10556                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10557         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10558                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10559         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10560                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10561         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10562                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10563         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10564                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10565         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10566                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10567         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10568                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10569         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10570                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 },
10571         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10572                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 },
10573         { }
10574 };
10575 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10576
10577 static const struct pci_error_handlers ipr_err_handler = {
10578         .error_detected = ipr_pci_error_detected,
10579         .mmio_enabled = ipr_pci_mmio_enabled,
10580         .slot_reset = ipr_pci_slot_reset,
10581 };
10582
10583 static struct pci_driver ipr_driver = {
10584         .name = IPR_NAME,
10585         .id_table = ipr_pci_table,
10586         .probe = ipr_probe,
10587         .remove = ipr_remove,
10588         .shutdown = ipr_shutdown,
10589         .err_handler = &ipr_err_handler,
10590 };
10591
10592 /**
10593  * ipr_halt_done - Shutdown prepare completion
10594  *
10595  * Return value:
10596  *      none
10597  **/
10598 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10599 {
10600         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10601 }
10602
10603 /**
10604  * ipr_halt - Issue shutdown prepare to all adapters
10605  *
10606  * Return value:
10607  *      NOTIFY_OK on success / NOTIFY_DONE on failure
10608  **/
10609 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10610 {
10611         struct ipr_cmnd *ipr_cmd;
10612         struct ipr_ioa_cfg *ioa_cfg;
10613         unsigned long flags = 0, driver_lock_flags;
10614
10615         if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10616                 return NOTIFY_DONE;
10617
10618         spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10619
10620         list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10621                 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10622                 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10623                     (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10624                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10625                         continue;
10626                 }
10627
10628                 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10629                 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10630                 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10631                 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10632                 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10633
10634                 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10635                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10636         }
10637         spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10638
10639         return NOTIFY_OK;
10640 }
10641
10642 static struct notifier_block ipr_notifier = {
10643         ipr_halt, NULL, 0
10644 };
10645
10646 /**
10647  * ipr_init - Module entry point
10648  *
10649  * Return value:
10650  *      0 on success / negative value on failure
10651  **/
10652 static int __init ipr_init(void)
10653 {
10654         ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10655                  IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10656
10657         register_reboot_notifier(&ipr_notifier);
10658         return pci_register_driver(&ipr_driver);
10659 }
10660
10661 /**
10662  * ipr_exit - Module unload
10663  *
10664  * Module unload entry point.
10665  *
10666  * Return value:
10667  *      none
10668  **/
10669 static void __exit ipr_exit(void)
10670 {
10671         unregister_reboot_notifier(&ipr_notifier);
10672         pci_unregister_driver(&ipr_driver);
10673 }
10674
10675 module_init(ipr_init);
10676 module_exit(ipr_exit);