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