drivers/scsi/mpt3sas/mpt3sas_scsih.c

   1 /*
   2  * Scsi Host Layer for MPT (Message Passing Technology) based controllers
   3  *
   4  * This code is based on drivers/scsi/mpt3sas/mpt3sas_scsih.c
   5  * Copyright (C) 2012-2014  LSI Corporation
   6  * Copyright (C) 2013-2014 Avago Technologies
   7  *  (mailto: MPT-FusionLinux.pdl@avagotech.com)
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * NO WARRANTY
  20  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  21  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  22  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  23  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  24  * solely responsible for determining the appropriateness of using and
  25  * distributing the Program and assumes all risks associated with its
  26  * exercise of rights under this Agreement, including but not limited to
  27  * the risks and costs of program errors, damage to or loss of data,
  28  * programs or equipment, and unavailability or interruption of operations.
  29
  30  * DISCLAIMER OF LIABILITY
  31  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  32  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  34  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  35  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  36  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  37  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  38
  39  * You should have received a copy of the GNU General Public License
  40  * along with this program; if not, write to the Free Software
  41  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  42  * USA.
  43  */
  44
  45 #include <linux/module.h>
  46 #include <linux/kernel.h>
  47 #include <linux/init.h>
  48 #include <linux/errno.h>
  49 #include <linux/blkdev.h>
  50 #include <linux/sched.h>
  51 #include <linux/workqueue.h>
  52 #include <linux/delay.h>
  53 #include <linux/pci.h>
  54 #include <linux/interrupt.h>
  55 #include <linux/aer.h>
  56 #include <linux/raid_class.h>
  57 #include <asm/unaligned.h>
  58
  59 #include "mpt3sas_base.h"
  60
  61 #define RAID_CHANNEL 1
  62 /* forward proto's */
  63 static void _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
  64         struct _sas_node *sas_expander);
  65 static void _firmware_event_work(struct work_struct *work);
  66
  67 static void _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
  68         struct _sas_device *sas_device);
  69 static int _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle,
  70         u8 retry_count, u8 is_pd);
  71
  72 static u8 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid);
  73
  74 /* global parameters */
  75 LIST_HEAD(mpt3sas_ioc_list);
  76 /* global ioc lock for list operations */
  77 DEFINE_SPINLOCK(gioc_lock);
  78
  79 MODULE_AUTHOR(MPT3SAS_AUTHOR);
  80 MODULE_DESCRIPTION(MPT3SAS_DESCRIPTION);
  81 MODULE_LICENSE("GPL");
  82 MODULE_VERSION(MPT3SAS_DRIVER_VERSION);
  83 MODULE_ALIAS("mpt2sas");
  84
  85 /* local parameters */
  86 static u8 scsi_io_cb_idx = -1;
  87 static u8 tm_cb_idx = -1;
  88 static u8 ctl_cb_idx = -1;
  89 static u8 base_cb_idx = -1;
  90 static u8 port_enable_cb_idx = -1;
  91 static u8 transport_cb_idx = -1;
  92 static u8 scsih_cb_idx = -1;
  93 static u8 config_cb_idx = -1;
  94 static int mpt2_ids;
  95 static int mpt3_ids;
  96
  97 static u8 tm_tr_cb_idx = -1 ;
  98 static u8 tm_tr_volume_cb_idx = -1 ;
  99 static u8 tm_sas_control_cb_idx = -1;
 100
 101 /* command line options */
 102 static u32 logging_level;
 103 MODULE_PARM_DESC(logging_level,
 104         " bits for enabling additional logging info (default=0)");
 105
 106
 107 static ushort max_sectors = 0xFFFF;
 108 module_param(max_sectors, ushort, 0);
 109 MODULE_PARM_DESC(max_sectors, "max sectors, range 64 to 32767  default=32767");
 110
 111
 112 static int missing_delay[2] = {-1, -1};
 113 module_param_array(missing_delay, int, NULL, 0);
 114 MODULE_PARM_DESC(missing_delay, " device missing delay , io missing delay");
 115
 116 /* scsi-mid layer global parmeter is max_report_luns, which is 511 */
 117 #define MPT3SAS_MAX_LUN (16895)
 118 static u64 max_lun = MPT3SAS_MAX_LUN;
 119 module_param(max_lun, ullong, 0);
 120 MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");
 121
 122 static ushort hbas_to_enumerate;
 123 module_param(hbas_to_enumerate, ushort, 0);
 124 MODULE_PARM_DESC(hbas_to_enumerate,
 125                 " 0 - enumerates both SAS 2.0 & SAS 3.0 generation HBAs\n \
 126                   1 - enumerates only SAS 2.0 generation HBAs\n \
 127                   2 - enumerates only SAS 3.0 generation HBAs (default=0)");
 128
 129 /* diag_buffer_enable is bitwise
 130  * bit 0 set = TRACE
 131  * bit 1 set = SNAPSHOT
 132  * bit 2 set = EXTENDED
 133  *
 134  * Either bit can be set, or both
 135  */
 136 static int diag_buffer_enable = -1;
 137 module_param(diag_buffer_enable, int, 0);
 138 MODULE_PARM_DESC(diag_buffer_enable,
 139         " post diag buffers (TRACE=1/SNAPSHOT=2/EXTENDED=4/default=0)");
 140 static int disable_discovery = -1;
 141 module_param(disable_discovery, int, 0);
 142 MODULE_PARM_DESC(disable_discovery, " disable discovery ");
 143
 144
 145 /* permit overriding the host protection capabilities mask (EEDP/T10 PI) */
 146 static int prot_mask = -1;
 147 module_param(prot_mask, int, 0);
 148 MODULE_PARM_DESC(prot_mask, " host protection capabilities mask, def=7 ");
 149
 150
 151 /* raid transport support */
 152 struct raid_template *mpt3sas_raid_template;
 153 struct raid_template *mpt2sas_raid_template;
 154
 155
 156 /**
 157  * struct sense_info - common structure for obtaining sense keys
 158  * @skey: sense key
 159  * @asc: additional sense code
 160  * @ascq: additional sense code qualifier
 161  */
 162 struct sense_info {
 163         u8 skey;
 164         u8 asc;
 165         u8 ascq;
 166 };
 167
 168 #define MPT3SAS_PROCESS_TRIGGER_DIAG (0xFFFB)
 169 #define MPT3SAS_TURN_ON_PFA_LED (0xFFFC)
 170 #define MPT3SAS_PORT_ENABLE_COMPLETE (0xFFFD)
 171 #define MPT3SAS_ABRT_TASK_SET (0xFFFE)
 172 #define MPT3SAS_REMOVE_UNRESPONDING_DEVICES (0xFFFF)
 173 /**
 174  * struct fw_event_work - firmware event struct
 175  * @list: link list framework
 176  * @work: work object (ioc->fault_reset_work_q)
 177  * @ioc: per adapter object
 178  * @device_handle: device handle
 179  * @VF_ID: virtual function id
 180  * @VP_ID: virtual port id
 181  * @ignore: flag meaning this event has been marked to ignore
 182  * @event: firmware event MPI2_EVENT_XXX defined in mpi2_ioc.h
 183  * @refcount: kref for this event
 184  * @event_data: reply event data payload follows
 185  *
 186  * This object stored on ioc->fw_event_list.
 187  */
 188 struct fw_event_work {
 189         struct list_head        list;
 190         struct work_struct      work;
 191
 192         struct MPT3SAS_ADAPTER *ioc;
 193         u16                     device_handle;
 194         u8                      VF_ID;
 195         u8                      VP_ID;
 196         u8                      ignore;
 197         u16                     event;
 198         struct kref             refcount;
 199         char                    event_data[0] __aligned(4);
 200 };
 201
 202 static void fw_event_work_free(struct kref *r)
 203 {
 204         kfree(container_of(r, struct fw_event_work, refcount));
 205 }
 206
 207 static void fw_event_work_get(struct fw_event_work *fw_work)
 208 {
 209         kref_get(&fw_work->refcount);
 210 }
 211
 212 static void fw_event_work_put(struct fw_event_work *fw_work)
 213 {
 214         kref_put(&fw_work->refcount, fw_event_work_free);
 215 }
 216
 217 static struct fw_event_work *alloc_fw_event_work(int len)
 218 {
 219         struct fw_event_work *fw_event;
 220
 221         fw_event = kzalloc(sizeof(*fw_event) + len, GFP_ATOMIC);
 222         if (!fw_event)
 223                 return NULL;
 224
 225         kref_init(&fw_event->refcount);
 226         return fw_event;
 227 }
 228
 229 /**
 230  * struct _scsi_io_transfer - scsi io transfer
 231  * @handle: sas device handle (assigned by firmware)
 232  * @is_raid: flag set for hidden raid components
 233  * @dir: DMA_TO_DEVICE, DMA_FROM_DEVICE,
 234  * @data_length: data transfer length
 235  * @data_dma: dma pointer to data
 236  * @sense: sense data
 237  * @lun: lun number
 238  * @cdb_length: cdb length
 239  * @cdb: cdb contents
 240  * @timeout: timeout for this command
 241  * @VF_ID: virtual function id
 242  * @VP_ID: virtual port id
 243  * @valid_reply: flag set for reply message
 244  * @sense_length: sense length
 245  * @ioc_status: ioc status
 246  * @scsi_state: scsi state
 247  * @scsi_status: scsi staus
 248  * @log_info: log information
 249  * @transfer_length: data length transfer when there is a reply message
 250  *
 251  * Used for sending internal scsi commands to devices within this module.
 252  * Refer to _scsi_send_scsi_io().
 253  */
 254 struct _scsi_io_transfer {
 255         u16     handle;
 256         u8      is_raid;
 257         enum dma_data_direction dir;
 258         u32     data_length;
 259         dma_addr_t data_dma;
 260         u8      sense[SCSI_SENSE_BUFFERSIZE];
 261         u32     lun;
 262         u8      cdb_length;
 263         u8      cdb[32];
 264         u8      timeout;
 265         u8      VF_ID;
 266         u8      VP_ID;
 267         u8      valid_reply;
 268   /* the following bits are only valid when 'valid_reply = 1' */
 269         u32     sense_length;
 270         u16     ioc_status;
 271         u8      scsi_state;
 272         u8      scsi_status;
 273         u32     log_info;
 274         u32     transfer_length;
 275 };
 276
 277 /**
 278  * _scsih_set_debug_level - global setting of ioc->logging_level.
 279  *
 280  * Note: The logging levels are defined in mpt3sas_debug.h.
 281  */
 282 static int
 283 _scsih_set_debug_level(const char *val, struct kernel_param *kp)
 284 {
 285         int ret = param_set_int(val, kp);
 286         struct MPT3SAS_ADAPTER *ioc;
 287
 288         if (ret)
 289                 return ret;
 290
 291         pr_info("setting logging_level(0x%08x)\n", logging_level);
 292         spin_lock(&gioc_lock);
 293         list_for_each_entry(ioc, &mpt3sas_ioc_list, list)
 294                 ioc->logging_level = logging_level;
 295         spin_unlock(&gioc_lock);
 296         return 0;
 297 }
 298 module_param_call(logging_level, _scsih_set_debug_level, param_get_int,
 299         &logging_level, 0644);
 300
 301 /**
 302  * _scsih_srch_boot_sas_address - search based on sas_address
 303  * @sas_address: sas address
 304  * @boot_device: boot device object from bios page 2
 305  *
 306  * Returns 1 when there's a match, 0 means no match.
 307  */
 308 static inline int
 309 _scsih_srch_boot_sas_address(u64 sas_address,
 310         Mpi2BootDeviceSasWwid_t *boot_device)
 311 {
 312         return (sas_address == le64_to_cpu(boot_device->SASAddress)) ?  1 : 0;
 313 }
 314
 315 /**
 316  * _scsih_srch_boot_device_name - search based on device name
 317  * @device_name: device name specified in INDENTIFY fram
 318  * @boot_device: boot device object from bios page 2
 319  *
 320  * Returns 1 when there's a match, 0 means no match.
 321  */
 322 static inline int
 323 _scsih_srch_boot_device_name(u64 device_name,
 324         Mpi2BootDeviceDeviceName_t *boot_device)
 325 {
 326         return (device_name == le64_to_cpu(boot_device->DeviceName)) ? 1 : 0;
 327 }
 328
 329 /**
 330  * _scsih_srch_boot_encl_slot - search based on enclosure_logical_id/slot
 331  * @enclosure_logical_id: enclosure logical id
 332  * @slot_number: slot number
 333  * @boot_device: boot device object from bios page 2
 334  *
 335  * Returns 1 when there's a match, 0 means no match.
 336  */
 337 static inline int
 338 _scsih_srch_boot_encl_slot(u64 enclosure_logical_id, u16 slot_number,
 339         Mpi2BootDeviceEnclosureSlot_t *boot_device)
 340 {
 341         return (enclosure_logical_id == le64_to_cpu(boot_device->
 342             EnclosureLogicalID) && slot_number == le16_to_cpu(boot_device->
 343             SlotNumber)) ? 1 : 0;
 344 }
 345
 346 /**
 347  * _scsih_is_boot_device - search for matching boot device.
 348  * @sas_address: sas address
 349  * @device_name: device name specified in INDENTIFY fram
 350  * @enclosure_logical_id: enclosure logical id
 351  * @slot_number: slot number
 352  * @form: specifies boot device form
 353  * @boot_device: boot device object from bios page 2
 354  *
 355  * Returns 1 when there's a match, 0 means no match.
 356  */
 357 static int
 358 _scsih_is_boot_device(u64 sas_address, u64 device_name,
 359         u64 enclosure_logical_id, u16 slot, u8 form,
 360         Mpi2BiosPage2BootDevice_t *boot_device)
 361 {
 362         int rc = 0;
 363
 364         switch (form) {
 365         case MPI2_BIOSPAGE2_FORM_SAS_WWID:
 366                 if (!sas_address)
 367                         break;
 368                 rc = _scsih_srch_boot_sas_address(
 369                     sas_address, &boot_device->SasWwid);
 370                 break;
 371         case MPI2_BIOSPAGE2_FORM_ENCLOSURE_SLOT:
 372                 if (!enclosure_logical_id)
 373                         break;
 374                 rc = _scsih_srch_boot_encl_slot(
 375                     enclosure_logical_id,
 376                     slot, &boot_device->EnclosureSlot);
 377                 break;
 378         case MPI2_BIOSPAGE2_FORM_DEVICE_NAME:
 379                 if (!device_name)
 380                         break;
 381                 rc = _scsih_srch_boot_device_name(
 382                     device_name, &boot_device->DeviceName);
 383                 break;
 384         case MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED:
 385                 break;
 386         }
 387
 388         return rc;
 389 }
 390
 391 /**
 392  * _scsih_get_sas_address - set the sas_address for given device handle
 393  * @handle: device handle
 394  * @sas_address: sas address
 395  *
 396  * Returns 0 success, non-zero when failure
 397  */
 398 static int
 399 _scsih_get_sas_address(struct MPT3SAS_ADAPTER *ioc, u16 handle,
 400         u64 *sas_address)
 401 {
 402         Mpi2SasDevicePage0_t sas_device_pg0;
 403         Mpi2ConfigReply_t mpi_reply;
 404         u32 ioc_status;
 405
 406         *sas_address = 0;
 407
 408         if (handle <= ioc->sas_hba.num_phys) {
 409                 *sas_address = ioc->sas_hba.sas_address;
 410                 return 0;
 411         }
 412
 413         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
 414             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
 415                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
 416                 __FILE__, __LINE__, __func__);
 417                 return -ENXIO;
 418         }
 419
 420         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
 421         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
 422                 *sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
 423                 return 0;
 424         }
 425
 426         /* we hit this becuase the given parent handle doesn't exist */
 427         if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
 428                 return -ENXIO;
 429
 430         /* else error case */
 431         pr_err(MPT3SAS_FMT
 432                 "handle(0x%04x), ioc_status(0x%04x), failure at %s:%d/%s()!\n",
 433                 ioc->name, handle, ioc_status,
 434              __FILE__, __LINE__, __func__);
 435         return -EIO;
 436 }
 437
 438 /**
 439  * _scsih_determine_boot_device - determine boot device.
 440  * @ioc: per adapter object
 441  * @device: either sas_device or raid_device object
 442  * @is_raid: [flag] 1 = raid object, 0 = sas object
 443  *
 444  * Determines whether this device should be first reported device to
 445  * to scsi-ml or sas transport, this purpose is for persistent boot device.
 446  * There are primary, alternate, and current entries in bios page 2. The order
 447  * priority is primary, alternate, then current.  This routine saves
 448  * the corresponding device object and is_raid flag in the ioc object.
 449  * The saved data to be used later in _scsih_probe_boot_devices().
 450  */
 451 static void
 452 _scsih_determine_boot_device(struct MPT3SAS_ADAPTER *ioc,
 453         void *device, u8 is_raid)
 454 {
 455         struct _sas_device *sas_device;
 456         struct _raid_device *raid_device;
 457         u64 sas_address;
 458         u64 device_name;
 459         u64 enclosure_logical_id;
 460         u16 slot;
 461
 462          /* only process this function when driver loads */
 463         if (!ioc->is_driver_loading)
 464                 return;
 465
 466          /* no Bios, return immediately */
 467         if (!ioc->bios_pg3.BiosVersion)
 468                 return;
 469
 470         if (!is_raid) {
 471                 sas_device = device;
 472                 sas_address = sas_device->sas_address;
 473                 device_name = sas_device->device_name;
 474                 enclosure_logical_id = sas_device->enclosure_logical_id;
 475                 slot = sas_device->slot;
 476         } else {
 477                 raid_device = device;
 478                 sas_address = raid_device->wwid;
 479                 device_name = 0;
 480                 enclosure_logical_id = 0;
 481                 slot = 0;
 482         }
 483
 484         if (!ioc->req_boot_device.device) {
 485                 if (_scsih_is_boot_device(sas_address, device_name,
 486                     enclosure_logical_id, slot,
 487                     (ioc->bios_pg2.ReqBootDeviceForm &
 488                     MPI2_BIOSPAGE2_FORM_MASK),
 489                     &ioc->bios_pg2.RequestedBootDevice)) {
 490                         dinitprintk(ioc, pr_info(MPT3SAS_FMT
 491                            "%s: req_boot_device(0x%016llx)\n",
 492                             ioc->name, __func__,
 493                             (unsigned long long)sas_address));
 494                         ioc->req_boot_device.device = device;
 495                         ioc->req_boot_device.is_raid = is_raid;
 496                 }
 497         }
 498
 499         if (!ioc->req_alt_boot_device.device) {
 500                 if (_scsih_is_boot_device(sas_address, device_name,
 501                     enclosure_logical_id, slot,
 502                     (ioc->bios_pg2.ReqAltBootDeviceForm &
 503                     MPI2_BIOSPAGE2_FORM_MASK),
 504                     &ioc->bios_pg2.RequestedAltBootDevice)) {
 505                         dinitprintk(ioc, pr_info(MPT3SAS_FMT
 506                            "%s: req_alt_boot_device(0x%016llx)\n",
 507                             ioc->name, __func__,
 508                             (unsigned long long)sas_address));
 509                         ioc->req_alt_boot_device.device = device;
 510                         ioc->req_alt_boot_device.is_raid = is_raid;
 511                 }
 512         }
 513
 514         if (!ioc->current_boot_device.device) {
 515                 if (_scsih_is_boot_device(sas_address, device_name,
 516                     enclosure_logical_id, slot,
 517                     (ioc->bios_pg2.CurrentBootDeviceForm &
 518                     MPI2_BIOSPAGE2_FORM_MASK),
 519                     &ioc->bios_pg2.CurrentBootDevice)) {
 520                         dinitprintk(ioc, pr_info(MPT3SAS_FMT
 521                            "%s: current_boot_device(0x%016llx)\n",
 522                             ioc->name, __func__,
 523                             (unsigned long long)sas_address));
 524                         ioc->current_boot_device.device = device;
 525                         ioc->current_boot_device.is_raid = is_raid;
 526                 }
 527         }
 528 }
 529
 530 static struct _sas_device *
 531 __mpt3sas_get_sdev_from_target(struct MPT3SAS_ADAPTER *ioc,
 532                 struct MPT3SAS_TARGET *tgt_priv)
 533 {
 534         struct _sas_device *ret;
 535
 536         assert_spin_locked(&ioc->sas_device_lock);
 537
 538         ret = tgt_priv->sdev;
 539         if (ret)
 540                 sas_device_get(ret);
 541
 542         return ret;
 543 }
 544
 545 static struct _sas_device *
 546 mpt3sas_get_sdev_from_target(struct MPT3SAS_ADAPTER *ioc,
 547                 struct MPT3SAS_TARGET *tgt_priv)
 548 {
 549         struct _sas_device *ret;
 550         unsigned long flags;
 551
 552         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 553         ret = __mpt3sas_get_sdev_from_target(ioc, tgt_priv);
 554         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 555
 556         return ret;
 557 }
 558
 559
 560 struct _sas_device *
 561 __mpt3sas_get_sdev_by_addr(struct MPT3SAS_ADAPTER *ioc,
 562                                         u64 sas_address)
 563 {
 564         struct _sas_device *sas_device;
 565
 566         assert_spin_locked(&ioc->sas_device_lock);
 567
 568         list_for_each_entry(sas_device, &ioc->sas_device_list, list)
 569                 if (sas_device->sas_address == sas_address)
 570                         goto found_device;
 571
 572         list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
 573                 if (sas_device->sas_address == sas_address)
 574                         goto found_device;
 575
 576         return NULL;
 577
 578 found_device:
 579         sas_device_get(sas_device);
 580         return sas_device;
 581 }
 582
 583 /**
 584  * mpt3sas_get_sdev_by_addr - sas device search
 585  * @ioc: per adapter object
 586  * @sas_address: sas address
 587  * Context: Calling function should acquire ioc->sas_device_lock
 588  *
 589  * This searches for sas_device based on sas_address, then return sas_device
 590  * object.
 591  */
 592 struct _sas_device *
 593 mpt3sas_get_sdev_by_addr(struct MPT3SAS_ADAPTER *ioc,
 594         u64 sas_address)
 595 {
 596         struct _sas_device *sas_device;
 597         unsigned long flags;
 598
 599         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 600         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
 601                         sas_address);
 602         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 603
 604         return sas_device;
 605 }
 606
 607 static struct _sas_device *
 608 __mpt3sas_get_sdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 609 {
 610         struct _sas_device *sas_device;
 611
 612         assert_spin_locked(&ioc->sas_device_lock);
 613
 614         list_for_each_entry(sas_device, &ioc->sas_device_list, list)
 615                 if (sas_device->handle == handle)
 616                         goto found_device;
 617
 618         list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
 619                 if (sas_device->handle == handle)
 620                         goto found_device;
 621
 622         return NULL;
 623
 624 found_device:
 625         sas_device_get(sas_device);
 626         return sas_device;
 627 }
 628
 629 /**
 630  * mpt3sas_get_sdev_by_handle - sas device search
 631  * @ioc: per adapter object
 632  * @handle: sas device handle (assigned by firmware)
 633  * Context: Calling function should acquire ioc->sas_device_lock
 634  *
 635  * This searches for sas_device based on sas_address, then return sas_device
 636  * object.
 637  */
 638 static struct _sas_device *
 639 mpt3sas_get_sdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 640 {
 641         struct _sas_device *sas_device;
 642         unsigned long flags;
 643
 644         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 645         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
 646         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 647
 648         return sas_device;
 649 }
 650
 651 /**
 652  * _scsih_sas_device_remove - remove sas_device from list.
 653  * @ioc: per adapter object
 654  * @sas_device: the sas_device object
 655  * Context: This function will acquire ioc->sas_device_lock.
 656  *
 657  * If sas_device is on the list, remove it and decrement its reference count.
 658  */
 659 static void
 660 _scsih_sas_device_remove(struct MPT3SAS_ADAPTER *ioc,
 661         struct _sas_device *sas_device)
 662 {
 663         unsigned long flags;
 664
 665         if (!sas_device)
 666                 return;
 667         pr_info(MPT3SAS_FMT
 668             "removing handle(0x%04x), sas_addr(0x%016llx)\n",
 669             ioc->name, sas_device->handle,
 670             (unsigned long long) sas_device->sas_address);
 671
 672         if (sas_device->enclosure_handle != 0)
 673                 pr_info(MPT3SAS_FMT
 674                    "removing enclosure logical id(0x%016llx), slot(%d)\n",
 675                    ioc->name, (unsigned long long)
 676                    sas_device->enclosure_logical_id, sas_device->slot);
 677
 678         if (sas_device->connector_name[0] != '\0')
 679                 pr_info(MPT3SAS_FMT
 680                    "removing enclosure level(0x%04x), connector name( %s)\n",
 681                    ioc->name, sas_device->enclosure_level,
 682                    sas_device->connector_name);
 683
 684         /*
 685          * The lock serializes access to the list, but we still need to verify
 686          * that nobody removed the entry while we were waiting on the lock.
 687          */
 688         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 689         if (!list_empty(&sas_device->list)) {
 690                 list_del_init(&sas_device->list);
 691                 sas_device_put(sas_device);
 692         }
 693         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 694 }
 695
 696 /**
 697  * _scsih_device_remove_by_handle - removing device object by handle
 698  * @ioc: per adapter object
 699  * @handle: device handle
 700  *
 701  * Return nothing.
 702  */
 703 static void
 704 _scsih_device_remove_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 705 {
 706         struct _sas_device *sas_device;
 707         unsigned long flags;
 708
 709         if (ioc->shost_recovery)
 710                 return;
 711
 712         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 713         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
 714         if (sas_device) {
 715                 list_del_init(&sas_device->list);
 716                 sas_device_put(sas_device);
 717         }
 718         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 719         if (sas_device) {
 720                 _scsih_remove_device(ioc, sas_device);
 721                 sas_device_put(sas_device);
 722         }
 723 }
 724
 725 /**
 726  * mpt3sas_device_remove_by_sas_address - removing device object by sas address
 727  * @ioc: per adapter object
 728  * @sas_address: device sas_address
 729  *
 730  * Return nothing.
 731  */
 732 void
 733 mpt3sas_device_remove_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
 734         u64 sas_address)
 735 {
 736         struct _sas_device *sas_device;
 737         unsigned long flags;
 738
 739         if (ioc->shost_recovery)
 740                 return;
 741
 742         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 743         sas_device = __mpt3sas_get_sdev_by_addr(ioc, sas_address);
 744         if (sas_device) {
 745                 list_del_init(&sas_device->list);
 746                 sas_device_put(sas_device);
 747         }
 748         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 749         if (sas_device) {
 750                 _scsih_remove_device(ioc, sas_device);
 751                 sas_device_put(sas_device);
 752         }
 753 }
 754
 755 /**
 756  * _scsih_sas_device_add - insert sas_device to the list.
 757  * @ioc: per adapter object
 758  * @sas_device: the sas_device object
 759  * Context: This function will acquire ioc->sas_device_lock.
 760  *
 761  * Adding new object to the ioc->sas_device_list.
 762  */
 763 static void
 764 _scsih_sas_device_add(struct MPT3SAS_ADAPTER *ioc,
 765         struct _sas_device *sas_device)
 766 {
 767         unsigned long flags;
 768
 769         dewtprintk(ioc, pr_info(MPT3SAS_FMT
 770                 "%s: handle(0x%04x), sas_addr(0x%016llx)\n",
 771                 ioc->name, __func__, sas_device->handle,
 772                 (unsigned long long)sas_device->sas_address));
 773
 774         if (sas_device->enclosure_handle != 0)
 775                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 776                     "%s: enclosure logical id(0x%016llx), slot( %d)\n",
 777                     ioc->name, __func__, (unsigned long long)
 778                     sas_device->enclosure_logical_id, sas_device->slot));
 779
 780         if (sas_device->connector_name[0] != '\0')
 781                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 782                     "%s: enclosure level(0x%04x), connector name( %s)\n",
 783                     ioc->name, __func__,
 784                     sas_device->enclosure_level, sas_device->connector_name));
 785
 786         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 787         sas_device_get(sas_device);
 788         list_add_tail(&sas_device->list, &ioc->sas_device_list);
 789         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 790
 791         if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
 792              sas_device->sas_address_parent)) {
 793                 _scsih_sas_device_remove(ioc, sas_device);
 794         } else if (!sas_device->starget) {
 795                 /*
 796                  * When asyn scanning is enabled, its not possible to remove
 797                  * devices while scanning is turned on due to an oops in
 798                  * scsi_sysfs_add_sdev()->add_device()->sysfs_addrm_start()
 799                  */
 800                 if (!ioc->is_driver_loading) {
 801                         mpt3sas_transport_port_remove(ioc,
 802                             sas_device->sas_address,
 803                             sas_device->sas_address_parent);
 804                         _scsih_sas_device_remove(ioc, sas_device);
 805                 }
 806         }
 807 }
 808
 809 /**
 810  * _scsih_sas_device_init_add - insert sas_device to the list.
 811  * @ioc: per adapter object
 812  * @sas_device: the sas_device object
 813  * Context: This function will acquire ioc->sas_device_lock.
 814  *
 815  * Adding new object at driver load time to the ioc->sas_device_init_list.
 816  */
 817 static void
 818 _scsih_sas_device_init_add(struct MPT3SAS_ADAPTER *ioc,
 819         struct _sas_device *sas_device)
 820 {
 821         unsigned long flags;
 822
 823         dewtprintk(ioc, pr_info(MPT3SAS_FMT
 824                 "%s: handle(0x%04x), sas_addr(0x%016llx)\n", ioc->name,
 825                 __func__, sas_device->handle,
 826                 (unsigned long long)sas_device->sas_address));
 827
 828         if (sas_device->enclosure_handle != 0)
 829                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 830                     "%s: enclosure logical id(0x%016llx), slot( %d)\n",
 831                     ioc->name, __func__, (unsigned long long)
 832                     sas_device->enclosure_logical_id, sas_device->slot));
 833
 834         if (sas_device->connector_name[0] != '\0')
 835                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 836                     "%s: enclosure level(0x%04x), connector name( %s)\n",
 837                     ioc->name, __func__, sas_device->enclosure_level,
 838                     sas_device->connector_name));
 839
 840         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 841         sas_device_get(sas_device);
 842         list_add_tail(&sas_device->list, &ioc->sas_device_init_list);
 843         _scsih_determine_boot_device(ioc, sas_device, 0);
 844         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 845 }
 846
 847 /**
 848  * _scsih_raid_device_find_by_id - raid device search
 849  * @ioc: per adapter object
 850  * @id: sas device target id
 851  * @channel: sas device channel
 852  * Context: Calling function should acquire ioc->raid_device_lock
 853  *
 854  * This searches for raid_device based on target id, then return raid_device
 855  * object.
 856  */
 857 static struct _raid_device *
 858 _scsih_raid_device_find_by_id(struct MPT3SAS_ADAPTER *ioc, int id, int channel)
 859 {
 860         struct _raid_device *raid_device, *r;
 861
 862         r = NULL;
 863         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
 864                 if (raid_device->id == id && raid_device->channel == channel) {
 865                         r = raid_device;
 866                         goto out;
 867                 }
 868         }
 869
 870  out:
 871         return r;
 872 }
 873
 874 /**
 875  * mpt3sas_raid_device_find_by_handle - raid device search
 876  * @ioc: per adapter object
 877  * @handle: sas device handle (assigned by firmware)
 878  * Context: Calling function should acquire ioc->raid_device_lock
 879  *
 880  * This searches for raid_device based on handle, then return raid_device
 881  * object.
 882  */
 883 struct _raid_device *
 884 mpt3sas_raid_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 885 {
 886         struct _raid_device *raid_device, *r;
 887
 888         r = NULL;
 889         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
 890                 if (raid_device->handle != handle)
 891                         continue;
 892                 r = raid_device;
 893                 goto out;
 894         }
 895
 896  out:
 897         return r;
 898 }
 899
 900 /**
 901  * _scsih_raid_device_find_by_wwid - raid device search
 902  * @ioc: per adapter object
 903  * @handle: sas device handle (assigned by firmware)
 904  * Context: Calling function should acquire ioc->raid_device_lock
 905  *
 906  * This searches for raid_device based on wwid, then return raid_device
 907  * object.
 908  */
 909 static struct _raid_device *
 910 _scsih_raid_device_find_by_wwid(struct MPT3SAS_ADAPTER *ioc, u64 wwid)
 911 {
 912         struct _raid_device *raid_device, *r;
 913
 914         r = NULL;
 915         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
 916                 if (raid_device->wwid != wwid)
 917                         continue;
 918                 r = raid_device;
 919                 goto out;
 920         }
 921
 922  out:
 923         return r;
 924 }
 925
 926 /**
 927  * _scsih_raid_device_add - add raid_device object
 928  * @ioc: per adapter object
 929  * @raid_device: raid_device object
 930  *
 931  * This is added to the raid_device_list link list.
 932  */
 933 static void
 934 _scsih_raid_device_add(struct MPT3SAS_ADAPTER *ioc,
 935         struct _raid_device *raid_device)
 936 {
 937         unsigned long flags;
 938
 939         dewtprintk(ioc, pr_info(MPT3SAS_FMT
 940                 "%s: handle(0x%04x), wwid(0x%016llx)\n", ioc->name, __func__,
 941             raid_device->handle, (unsigned long long)raid_device->wwid));
 942
 943         spin_lock_irqsave(&ioc->raid_device_lock, flags);
 944         list_add_tail(&raid_device->list, &ioc->raid_device_list);
 945         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
 946 }
 947
 948 /**
 949  * _scsih_raid_device_remove - delete raid_device object
 950  * @ioc: per adapter object
 951  * @raid_device: raid_device object
 952  *
 953  */
 954 static void
 955 _scsih_raid_device_remove(struct MPT3SAS_ADAPTER *ioc,
 956         struct _raid_device *raid_device)
 957 {
 958         unsigned long flags;
 959
 960         spin_lock_irqsave(&ioc->raid_device_lock, flags);
 961         list_del(&raid_device->list);
 962         kfree(raid_device);
 963         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
 964 }
 965
 966 /**
 967  * mpt3sas_scsih_expander_find_by_handle - expander device search
 968  * @ioc: per adapter object
 969  * @handle: expander handle (assigned by firmware)
 970  * Context: Calling function should acquire ioc->sas_device_lock
 971  *
 972  * This searches for expander device based on handle, then returns the
 973  * sas_node object.
 974  */
 975 struct _sas_node *
 976 mpt3sas_scsih_expander_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 977 {
 978         struct _sas_node *sas_expander, *r;
 979
 980         r = NULL;
 981         list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
 982                 if (sas_expander->handle != handle)
 983                         continue;
 984                 r = sas_expander;
 985                 goto out;
 986         }
 987  out:
 988         return r;
 989 }
 990
 991 /**
 992  * mpt3sas_scsih_expander_find_by_sas_address - expander device search
 993  * @ioc: per adapter object
 994  * @sas_address: sas address
 995  * Context: Calling function should acquire ioc->sas_node_lock.
 996  *
 997  * This searches for expander device based on sas_address, then returns the
 998  * sas_node object.
 999  */
1000 struct _sas_node *
1001 mpt3sas_scsih_expander_find_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
1002         u64 sas_address)
1003 {
1004         struct _sas_node *sas_expander, *r;
1005
1006         r = NULL;
1007         list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
1008                 if (sas_expander->sas_address != sas_address)
1009                         continue;
1010                 r = sas_expander;
1011                 goto out;
1012         }
1013  out:
1014         return r;
1015 }
1016
1017 /**
1018  * _scsih_expander_node_add - insert expander device to the list.
1019  * @ioc: per adapter object
1020  * @sas_expander: the sas_device object
1021  * Context: This function will acquire ioc->sas_node_lock.
1022  *
1023  * Adding new object to the ioc->sas_expander_list.
1024  *
1025  * Return nothing.
1026  */
1027 static void
1028 _scsih_expander_node_add(struct MPT3SAS_ADAPTER *ioc,
1029         struct _sas_node *sas_expander)
1030 {
1031         unsigned long flags;
1032
1033         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1034         list_add_tail(&sas_expander->list, &ioc->sas_expander_list);
1035         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1036 }
1037
1038 /**
1039  * _scsih_is_end_device - determines if device is an end device
1040  * @device_info: bitfield providing information about the device.
1041  * Context: none
1042  *
1043  * Returns 1 if end device.
1044  */
1045 static int
1046 _scsih_is_end_device(u32 device_info)
1047 {
1048         if (device_info & MPI2_SAS_DEVICE_INFO_END_DEVICE &&
1049                 ((device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) |
1050                 (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET) |
1051                 (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)))
1052                 return 1;
1053         else
1054                 return 0;
1055 }
1056
1057 /**
1058  * _scsih_scsi_lookup_get - returns scmd entry
1059  * @ioc: per adapter object
1060  * @smid: system request message index
1061  *
1062  * Returns the smid stored scmd pointer.
1063  */
1064 static struct scsi_cmnd *
1065 _scsih_scsi_lookup_get(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1066 {
1067         return ioc->scsi_lookup[smid - 1].scmd;
1068 }
1069
1070 /**
1071  * _scsih_scsi_lookup_get_clear - returns scmd entry
1072  * @ioc: per adapter object
1073  * @smid: system request message index
1074  *
1075  * Returns the smid stored scmd pointer.
1076  * Then will derefrence the stored scmd pointer.
1077  */
1078 static inline struct scsi_cmnd *
1079 _scsih_scsi_lookup_get_clear(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1080 {
1081         unsigned long flags;
1082         struct scsi_cmnd *scmd;
1083
1084         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1085         scmd = ioc->scsi_lookup[smid - 1].scmd;
1086         ioc->scsi_lookup[smid - 1].scmd = NULL;
1087         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1088
1089         return scmd;
1090 }
1091
1092 /**
1093  * _scsih_scsi_lookup_find_by_scmd - scmd lookup
1094  * @ioc: per adapter object
1095  * @smid: system request message index
1096  * @scmd: pointer to scsi command object
1097  * Context: This function will acquire ioc->scsi_lookup_lock.
1098  *
1099  * This will search for a scmd pointer in the scsi_lookup array,
1100  * returning the revelent smid.  A returned value of zero means invalid.
1101  */
1102 static u16
1103 _scsih_scsi_lookup_find_by_scmd(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd
1104         *scmd)
1105 {
1106         u16 smid;
1107         unsigned long   flags;
1108         int i;
1109
1110         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1111         smid = 0;
1112         for (i = 0; i < ioc->scsiio_depth; i++) {
1113                 if (ioc->scsi_lookup[i].scmd == scmd) {
1114                         smid = ioc->scsi_lookup[i].smid;
1115                         goto out;
1116                 }
1117         }
1118  out:
1119         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1120         return smid;
1121 }
1122
1123 /**
1124  * _scsih_scsi_lookup_find_by_target - search for matching channel:id
1125  * @ioc: per adapter object
1126  * @id: target id
1127  * @channel: channel
1128  * Context: This function will acquire ioc->scsi_lookup_lock.
1129  *
1130  * This will search for a matching channel:id in the scsi_lookup array,
1131  * returning 1 if found.
1132  */
1133 static u8
1134 _scsih_scsi_lookup_find_by_target(struct MPT3SAS_ADAPTER *ioc, int id,
1135         int channel)
1136 {
1137         u8 found;
1138         unsigned long   flags;
1139         int i;
1140
1141         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1142         found = 0;
1143         for (i = 0 ; i < ioc->scsiio_depth; i++) {
1144                 if (ioc->scsi_lookup[i].scmd &&
1145                     (ioc->scsi_lookup[i].scmd->device->id == id &&
1146                     ioc->scsi_lookup[i].scmd->device->channel == channel)) {
1147                         found = 1;
1148                         goto out;
1149                 }
1150         }
1151  out:
1152         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1153         return found;
1154 }
1155
1156 /**
1157  * _scsih_scsi_lookup_find_by_lun - search for matching channel:id:lun
1158  * @ioc: per adapter object
1159  * @id: target id
1160  * @lun: lun number
1161  * @channel: channel
1162  * Context: This function will acquire ioc->scsi_lookup_lock.
1163  *
1164  * This will search for a matching channel:id:lun in the scsi_lookup array,
1165  * returning 1 if found.
1166  */
1167 static u8
1168 _scsih_scsi_lookup_find_by_lun(struct MPT3SAS_ADAPTER *ioc, int id,
1169         unsigned int lun, int channel)
1170 {
1171         u8 found;
1172         unsigned long   flags;
1173         int i;
1174
1175         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1176         found = 0;
1177         for (i = 0 ; i < ioc->scsiio_depth; i++) {
1178                 if (ioc->scsi_lookup[i].scmd &&
1179                     (ioc->scsi_lookup[i].scmd->device->id == id &&
1180                     ioc->scsi_lookup[i].scmd->device->channel == channel &&
1181                     ioc->scsi_lookup[i].scmd->device->lun == lun)) {
1182                         found = 1;
1183                         goto out;
1184                 }
1185         }
1186  out:
1187         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1188         return found;
1189 }
1190
1191 /**
1192  * scsih_change_queue_depth - setting device queue depth
1193  * @sdev: scsi device struct
1194  * @qdepth: requested queue depth
1195  *
1196  * Returns queue depth.
1197  */
1198 int
1199 scsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
1200 {
1201         struct Scsi_Host *shost = sdev->host;
1202         int max_depth;
1203         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1204         struct MPT3SAS_DEVICE *sas_device_priv_data;
1205         struct MPT3SAS_TARGET *sas_target_priv_data;
1206         struct _sas_device *sas_device;
1207         unsigned long flags;
1208
1209         max_depth = shost->can_queue;
1210
1211         /* limit max device queue for SATA to 32 */
1212         sas_device_priv_data = sdev->hostdata;
1213         if (!sas_device_priv_data)
1214                 goto not_sata;
1215         sas_target_priv_data = sas_device_priv_data->sas_target;
1216         if (!sas_target_priv_data)
1217                 goto not_sata;
1218         if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME))
1219                 goto not_sata;
1220
1221         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1222         sas_device = __mpt3sas_get_sdev_from_target(ioc, sas_target_priv_data);
1223         if (sas_device) {
1224                 if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1225                         max_depth = MPT3SAS_SATA_QUEUE_DEPTH;
1226
1227                 sas_device_put(sas_device);
1228         }
1229         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1230
1231  not_sata:
1232
1233         if (!sdev->tagged_supported)
1234                 max_depth = 1;
1235         if (qdepth > max_depth)
1236                 qdepth = max_depth;
1237         return scsi_change_queue_depth(sdev, qdepth);
1238 }
1239
1240 /**
1241  * scsih_target_alloc - target add routine
1242  * @starget: scsi target struct
1243  *
1244  * Returns 0 if ok. Any other return is assumed to be an error and
1245  * the device is ignored.
1246  */
1247 int
1248 scsih_target_alloc(struct scsi_target *starget)
1249 {
1250         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1251         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1252         struct MPT3SAS_TARGET *sas_target_priv_data;
1253         struct _sas_device *sas_device;
1254         struct _raid_device *raid_device;
1255         unsigned long flags;
1256         struct sas_rphy *rphy;
1257
1258         sas_target_priv_data = kzalloc(sizeof(*sas_target_priv_data),
1259                                        GFP_KERNEL);
1260         if (!sas_target_priv_data)
1261                 return -ENOMEM;
1262
1263         starget->hostdata = sas_target_priv_data;
1264         sas_target_priv_data->starget = starget;
1265         sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
1266
1267         /* RAID volumes */
1268         if (starget->channel == RAID_CHANNEL) {
1269                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1270                 raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
1271                     starget->channel);
1272                 if (raid_device) {
1273                         sas_target_priv_data->handle = raid_device->handle;
1274                         sas_target_priv_data->sas_address = raid_device->wwid;
1275                         sas_target_priv_data->flags |= MPT_TARGET_FLAGS_VOLUME;
1276                         sas_target_priv_data->raid_device = raid_device;
1277                         if (ioc->is_warpdrive)
1278                                 raid_device->starget = starget;
1279                 }
1280                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1281                 return 0;
1282         }
1283
1284         /* sas/sata devices */
1285         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1286         rphy = dev_to_rphy(starget->dev.parent);
1287         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1288            rphy->identify.sas_address);
1289
1290         if (sas_device) {
1291                 sas_target_priv_data->handle = sas_device->handle;
1292                 sas_target_priv_data->sas_address = sas_device->sas_address;
1293                 sas_target_priv_data->sdev = sas_device;
1294                 sas_device->starget = starget;
1295                 sas_device->id = starget->id;
1296                 sas_device->channel = starget->channel;
1297                 if (test_bit(sas_device->handle, ioc->pd_handles))
1298                         sas_target_priv_data->flags |=
1299                             MPT_TARGET_FLAGS_RAID_COMPONENT;
1300                 if (sas_device->fast_path)
1301                         sas_target_priv_data->flags |= MPT_TARGET_FASTPATH_IO;
1302         }
1303         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1304
1305         return 0;
1306 }
1307
1308 /**
1309  * scsih_target_destroy - target destroy routine
1310  * @starget: scsi target struct
1311  *
1312  * Returns nothing.
1313  */
1314 void
1315 scsih_target_destroy(struct scsi_target *starget)
1316 {
1317         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1318         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1319         struct MPT3SAS_TARGET *sas_target_priv_data;
1320         struct _sas_device *sas_device;
1321         struct _raid_device *raid_device;
1322         unsigned long flags;
1323         struct sas_rphy *rphy;
1324
1325         sas_target_priv_data = starget->hostdata;
1326         if (!sas_target_priv_data)
1327                 return;
1328
1329         if (starget->channel == RAID_CHANNEL) {
1330                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1331                 raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
1332                     starget->channel);
1333                 if (raid_device) {
1334                         raid_device->starget = NULL;
1335                         raid_device->sdev = NULL;
1336                 }
1337                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1338                 goto out;
1339         }
1340
1341         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1342         rphy = dev_to_rphy(starget->dev.parent);
1343         sas_device = __mpt3sas_get_sdev_from_target(ioc, sas_target_priv_data);
1344         if (sas_device && (sas_device->starget == starget) &&
1345             (sas_device->id == starget->id) &&
1346             (sas_device->channel == starget->channel))
1347                 sas_device->starget = NULL;
1348
1349         if (sas_device) {
1350                 /*
1351                  * Corresponding get() is in _scsih_target_alloc()
1352                  */
1353                 sas_target_priv_data->sdev = NULL;
1354                 sas_device_put(sas_device);
1355
1356                 sas_device_put(sas_device);
1357         }
1358         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1359
1360  out:
1361         kfree(sas_target_priv_data);
1362         starget->hostdata = NULL;
1363 }
1364
1365 /**
1366  * scsih_slave_alloc - device add routine
1367  * @sdev: scsi device struct
1368  *
1369  * Returns 0 if ok. Any other return is assumed to be an error and
1370  * the device is ignored.
1371  */
1372 int
1373 scsih_slave_alloc(struct scsi_device *sdev)
1374 {
1375         struct Scsi_Host *shost;
1376         struct MPT3SAS_ADAPTER *ioc;
1377         struct MPT3SAS_TARGET *sas_target_priv_data;
1378         struct MPT3SAS_DEVICE *sas_device_priv_data;
1379         struct scsi_target *starget;
1380         struct _raid_device *raid_device;
1381         struct _sas_device *sas_device;
1382         unsigned long flags;
1383
1384         sas_device_priv_data = kzalloc(sizeof(*sas_device_priv_data),
1385                                        GFP_KERNEL);
1386         if (!sas_device_priv_data)
1387                 return -ENOMEM;
1388
1389         sas_device_priv_data->lun = sdev->lun;
1390         sas_device_priv_data->flags = MPT_DEVICE_FLAGS_INIT;
1391
1392         starget = scsi_target(sdev);
1393         sas_target_priv_data = starget->hostdata;
1394         sas_target_priv_data->num_luns++;
1395         sas_device_priv_data->sas_target = sas_target_priv_data;
1396         sdev->hostdata = sas_device_priv_data;
1397         if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT))
1398                 sdev->no_uld_attach = 1;
1399
1400         shost = dev_to_shost(&starget->dev);
1401         ioc = shost_priv(shost);
1402         if (starget->channel == RAID_CHANNEL) {
1403                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1404                 raid_device = _scsih_raid_device_find_by_id(ioc,
1405                     starget->id, starget->channel);
1406                 if (raid_device)
1407                         raid_device->sdev = sdev; /* raid is single lun */
1408                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1409         }
1410
1411         if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
1412                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1413                 sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1414                                         sas_target_priv_data->sas_address);
1415                 if (sas_device && (sas_device->starget == NULL)) {
1416                         sdev_printk(KERN_INFO, sdev,
1417                         "%s : sas_device->starget set to starget @ %d\n",
1418                              __func__, __LINE__);
1419                         sas_device->starget = starget;
1420                 }
1421
1422                 if (sas_device)
1423                         sas_device_put(sas_device);
1424
1425                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1426         }
1427
1428         return 0;
1429 }
1430
1431 /**
1432  * scsih_slave_destroy - device destroy routine
1433  * @sdev: scsi device struct
1434  *
1435  * Returns nothing.
1436  */
1437 void
1438 scsih_slave_destroy(struct scsi_device *sdev)
1439 {
1440         struct MPT3SAS_TARGET *sas_target_priv_data;
1441         struct scsi_target *starget;
1442         struct Scsi_Host *shost;
1443         struct MPT3SAS_ADAPTER *ioc;
1444         struct _sas_device *sas_device;
1445         unsigned long flags;
1446
1447         if (!sdev->hostdata)
1448                 return;
1449
1450         starget = scsi_target(sdev);
1451         sas_target_priv_data = starget->hostdata;
1452         sas_target_priv_data->num_luns--;
1453
1454         shost = dev_to_shost(&starget->dev);
1455         ioc = shost_priv(shost);
1456
1457         if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
1458                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1459                 sas_device = __mpt3sas_get_sdev_from_target(ioc,
1460                                 sas_target_priv_data);
1461                 if (sas_device && !sas_target_priv_data->num_luns)
1462                         sas_device->starget = NULL;
1463
1464                 if (sas_device)
1465                         sas_device_put(sas_device);
1466                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1467         }
1468
1469         kfree(sdev->hostdata);
1470         sdev->hostdata = NULL;
1471 }
1472
1473 /**
1474  * _scsih_display_sata_capabilities - sata capabilities
1475  * @ioc: per adapter object
1476  * @handle: device handle
1477  * @sdev: scsi device struct
1478  */
1479 static void
1480 _scsih_display_sata_capabilities(struct MPT3SAS_ADAPTER *ioc,
1481         u16 handle, struct scsi_device *sdev)
1482 {
1483         Mpi2ConfigReply_t mpi_reply;
1484         Mpi2SasDevicePage0_t sas_device_pg0;
1485         u32 ioc_status;
1486         u16 flags;
1487         u32 device_info;
1488
1489         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
1490             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
1491                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1492                     ioc->name, __FILE__, __LINE__, __func__);
1493                 return;
1494         }
1495
1496         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1497             MPI2_IOCSTATUS_MASK;
1498         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1499                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1500                     ioc->name, __FILE__, __LINE__, __func__);
1501                 return;
1502         }
1503
1504         flags = le16_to_cpu(sas_device_pg0.Flags);
1505         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
1506
1507         sdev_printk(KERN_INFO, sdev,
1508             "atapi(%s), ncq(%s), asyn_notify(%s), smart(%s), fua(%s), "
1509             "sw_preserve(%s)\n",
1510             (device_info & MPI2_SAS_DEVICE_INFO_ATAPI_DEVICE) ? "y" : "n",
1511             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_NCQ_SUPPORTED) ? "y" : "n",
1512             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_ASYNCHRONOUS_NOTIFY) ? "y" :
1513             "n",
1514             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SMART_SUPPORTED) ? "y" : "n",
1515             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_FUA_SUPPORTED) ? "y" : "n",
1516             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SW_PRESERVE) ? "y" : "n");
1517 }
1518
1519 /*
1520  * raid transport support -
1521  * Enabled for SLES11 and newer, in older kernels the driver will panic when
1522  * unloading the driver followed by a load - I beleive that the subroutine
1523  * raid_class_release() is not cleaning up properly.
1524  */
1525
1526 /**
1527  * scsih_is_raid - return boolean indicating device is raid volume
1528  * @dev the device struct object
1529  */
1530 int
1531 scsih_is_raid(struct device *dev)
1532 {
1533         struct scsi_device *sdev = to_scsi_device(dev);
1534         struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1535
1536         if (ioc->is_warpdrive)
1537                 return 0;
1538         return (sdev->channel == RAID_CHANNEL) ? 1 : 0;
1539 }
1540
1541 /**
1542  * scsih_get_resync - get raid volume resync percent complete
1543  * @dev the device struct object
1544  */
1545 void
1546 scsih_get_resync(struct device *dev)
1547 {
1548         struct scsi_device *sdev = to_scsi_device(dev);
1549         struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1550         static struct _raid_device *raid_device;
1551         unsigned long flags;
1552         Mpi2RaidVolPage0_t vol_pg0;
1553         Mpi2ConfigReply_t mpi_reply;
1554         u32 volume_status_flags;
1555         u8 percent_complete;
1556         u16 handle;
1557
1558         percent_complete = 0;
1559         handle = 0;
1560         if (ioc->is_warpdrive)
1561                 goto out;
1562
1563         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1564         raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
1565             sdev->channel);
1566         if (raid_device) {
1567                 handle = raid_device->handle;
1568                 percent_complete = raid_device->percent_complete;
1569         }
1570         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1571
1572         if (!handle)
1573                 goto out;
1574
1575         if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
1576              MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
1577              sizeof(Mpi2RaidVolPage0_t))) {
1578                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1579                     ioc->name, __FILE__, __LINE__, __func__);
1580                 percent_complete = 0;
1581                 goto out;
1582         }
1583
1584         volume_status_flags = le32_to_cpu(vol_pg0.VolumeStatusFlags);
1585         if (!(volume_status_flags &
1586             MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS))
1587                 percent_complete = 0;
1588
1589  out:
1590
1591         switch (ioc->hba_mpi_version_belonged) {
1592         case MPI2_VERSION:
1593                 raid_set_resync(mpt2sas_raid_template, dev, percent_complete);
1594                 break;
1595         case MPI25_VERSION:
1596         case MPI26_VERSION:
1597                 raid_set_resync(mpt3sas_raid_template, dev, percent_complete);
1598                 break;
1599         }
1600 }
1601
1602 /**
1603  * scsih_get_state - get raid volume level
1604  * @dev the device struct object
1605  */
1606 void
1607 scsih_get_state(struct device *dev)
1608 {
1609         struct scsi_device *sdev = to_scsi_device(dev);
1610         struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1611         static struct _raid_device *raid_device;
1612         unsigned long flags;
1613         Mpi2RaidVolPage0_t vol_pg0;
1614         Mpi2ConfigReply_t mpi_reply;
1615         u32 volstate;
1616         enum raid_state state = RAID_STATE_UNKNOWN;
1617         u16 handle = 0;
1618
1619         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1620         raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
1621             sdev->channel);
1622         if (raid_device)
1623                 handle = raid_device->handle;
1624         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1625
1626         if (!raid_device)
1627                 goto out;
1628
1629         if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
1630              MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
1631              sizeof(Mpi2RaidVolPage0_t))) {
1632                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1633                     ioc->name, __FILE__, __LINE__, __func__);
1634                 goto out;
1635         }
1636
1637         volstate = le32_to_cpu(vol_pg0.VolumeStatusFlags);
1638         if (volstate & MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS) {
1639                 state = RAID_STATE_RESYNCING;
1640                 goto out;
1641         }
1642
1643         switch (vol_pg0.VolumeState) {
1644         case MPI2_RAID_VOL_STATE_OPTIMAL:
1645         case MPI2_RAID_VOL_STATE_ONLINE:
1646                 state = RAID_STATE_ACTIVE;
1647                 break;
1648         case  MPI2_RAID_VOL_STATE_DEGRADED:
1649                 state = RAID_STATE_DEGRADED;
1650                 break;
1651         case MPI2_RAID_VOL_STATE_FAILED:
1652         case MPI2_RAID_VOL_STATE_MISSING:
1653                 state = RAID_STATE_OFFLINE;
1654                 break;
1655         }
1656  out:
1657         switch (ioc->hba_mpi_version_belonged) {
1658         case MPI2_VERSION:
1659                 raid_set_state(mpt2sas_raid_template, dev, state);
1660                 break;
1661         case MPI25_VERSION:
1662         case MPI26_VERSION:
1663                 raid_set_state(mpt3sas_raid_template, dev, state);
1664                 break;
1665         }
1666 }
1667
1668 /**
1669  * _scsih_set_level - set raid level
1670  * @sdev: scsi device struct
1671  * @volume_type: volume type
1672  */
1673 static void
1674 _scsih_set_level(struct MPT3SAS_ADAPTER *ioc,
1675         struct scsi_device *sdev, u8 volume_type)
1676 {
1677         enum raid_level level = RAID_LEVEL_UNKNOWN;
1678
1679         switch (volume_type) {
1680         case MPI2_RAID_VOL_TYPE_RAID0:
1681                 level = RAID_LEVEL_0;
1682                 break;
1683         case MPI2_RAID_VOL_TYPE_RAID10:
1684                 level = RAID_LEVEL_10;
1685                 break;
1686         case MPI2_RAID_VOL_TYPE_RAID1E:
1687                 level = RAID_LEVEL_1E;
1688                 break;
1689         case MPI2_RAID_VOL_TYPE_RAID1:
1690                 level = RAID_LEVEL_1;
1691                 break;
1692         }
1693
1694         switch (ioc->hba_mpi_version_belonged) {
1695         case MPI2_VERSION:
1696                 raid_set_level(mpt2sas_raid_template,
1697                         &sdev->sdev_gendev, level);
1698                 break;
1699         case MPI25_VERSION:
1700         case MPI26_VERSION:
1701                 raid_set_level(mpt3sas_raid_template,
1702                         &sdev->sdev_gendev, level);
1703                 break;
1704         }
1705 }
1706
1707
1708 /**
1709  * _scsih_get_volume_capabilities - volume capabilities
1710  * @ioc: per adapter object
1711  * @sas_device: the raid_device object
1712  *
1713  * Returns 0 for success, else 1
1714  */
1715 static int
1716 _scsih_get_volume_capabilities(struct MPT3SAS_ADAPTER *ioc,
1717         struct _raid_device *raid_device)
1718 {
1719         Mpi2RaidVolPage0_t *vol_pg0;
1720         Mpi2RaidPhysDiskPage0_t pd_pg0;
1721         Mpi2SasDevicePage0_t sas_device_pg0;
1722         Mpi2ConfigReply_t mpi_reply;
1723         u16 sz;
1724         u8 num_pds;
1725
1726         if ((mpt3sas_config_get_number_pds(ioc, raid_device->handle,
1727             &num_pds)) || !num_pds) {
1728                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1729                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1730                     __func__));
1731                 return 1;
1732         }
1733
1734         raid_device->num_pds = num_pds;
1735         sz = offsetof(Mpi2RaidVolPage0_t, PhysDisk) + (num_pds *
1736             sizeof(Mpi2RaidVol0PhysDisk_t));
1737         vol_pg0 = kzalloc(sz, GFP_KERNEL);
1738         if (!vol_pg0) {
1739                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1740                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1741                     __func__));
1742                 return 1;
1743         }
1744
1745         if ((mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, vol_pg0,
1746              MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle, sz))) {
1747                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1748                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1749                     __func__));
1750                 kfree(vol_pg0);
1751                 return 1;
1752         }
1753
1754         raid_device->volume_type = vol_pg0->VolumeType;
1755
1756         /* figure out what the underlying devices are by
1757          * obtaining the device_info bits for the 1st device
1758          */
1759         if (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
1760             &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_PHYSDISKNUM,
1761             vol_pg0->PhysDisk[0].PhysDiskNum))) {
1762                 if (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
1763                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
1764                     le16_to_cpu(pd_pg0.DevHandle)))) {
1765                         raid_device->device_info =
1766                             le32_to_cpu(sas_device_pg0.DeviceInfo);
1767                 }
1768         }
1769
1770         kfree(vol_pg0);
1771         return 0;
1772 }
1773
1774 /**
1775  * _scsih_enable_tlr - setting TLR flags
1776  * @ioc: per adapter object
1777  * @sdev: scsi device struct
1778  *
1779  * Enabling Transaction Layer Retries for tape devices when
1780  * vpd page 0x90 is present
1781  *
1782  */
1783 static void
1784 _scsih_enable_tlr(struct MPT3SAS_ADAPTER *ioc, struct scsi_device *sdev)
1785 {
1786
1787         /* only for TAPE */
1788         if (sdev->type != TYPE_TAPE)
1789                 return;
1790
1791         if (!(ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR))
1792                 return;
1793
1794         sas_enable_tlr(sdev);
1795         sdev_printk(KERN_INFO, sdev, "TLR %s\n",
1796             sas_is_tlr_enabled(sdev) ? "Enabled" : "Disabled");
1797         return;
1798
1799 }
1800
1801 /**
1802  * scsih_slave_configure - device configure routine.
1803  * @sdev: scsi device struct
1804  *
1805  * Returns 0 if ok. Any other return is assumed to be an error and
1806  * the device is ignored.
1807  */
1808 int
1809 scsih_slave_configure(struct scsi_device *sdev)
1810 {
1811         struct Scsi_Host *shost = sdev->host;
1812         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1813         struct MPT3SAS_DEVICE *sas_device_priv_data;
1814         struct MPT3SAS_TARGET *sas_target_priv_data;
1815         struct _sas_device *sas_device;
1816         struct _raid_device *raid_device;
1817         unsigned long flags;
1818         int qdepth;
1819         u8 ssp_target = 0;
1820         char *ds = "";
1821         char *r_level = "";
1822         u16 handle, volume_handle = 0;
1823         u64 volume_wwid = 0;
1824
1825         qdepth = 1;
1826         sas_device_priv_data = sdev->hostdata;
1827         sas_device_priv_data->configured_lun = 1;
1828         sas_device_priv_data->flags &= ~MPT_DEVICE_FLAGS_INIT;
1829         sas_target_priv_data = sas_device_priv_data->sas_target;
1830         handle = sas_target_priv_data->handle;
1831
1832         /* raid volume handling */
1833         if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME) {
1834
1835                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1836                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
1837                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1838                 if (!raid_device) {
1839                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1840                             "failure at %s:%d/%s()!\n", ioc->name, __FILE__,
1841                             __LINE__, __func__));
1842                         return 1;
1843                 }
1844
1845                 if (_scsih_get_volume_capabilities(ioc, raid_device)) {
1846                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1847                             "failure at %s:%d/%s()!\n", ioc->name, __FILE__,
1848                             __LINE__, __func__));
1849                         return 1;
1850                 }
1851
1852                 /*
1853                  * WARPDRIVE: Initialize the required data for Direct IO
1854                  */
1855                 mpt3sas_init_warpdrive_properties(ioc, raid_device);
1856
1857                 /* RAID Queue Depth Support
1858                  * IS volume = underlying qdepth of drive type, either
1859                  *    MPT3SAS_SAS_QUEUE_DEPTH or MPT3SAS_SATA_QUEUE_DEPTH
1860                  * IM/IME/R10 = 128 (MPT3SAS_RAID_QUEUE_DEPTH)
1861                  */
1862                 if (raid_device->device_info &
1863                     MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
1864                         qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
1865                         ds = "SSP";
1866                 } else {
1867                         qdepth = MPT3SAS_SATA_QUEUE_DEPTH;
1868                          if (raid_device->device_info &
1869                             MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1870                                 ds = "SATA";
1871                         else
1872                                 ds = "STP";
1873                 }
1874
1875                 switch (raid_device->volume_type) {
1876                 case MPI2_RAID_VOL_TYPE_RAID0:
1877                         r_level = "RAID0";
1878                         break;
1879                 case MPI2_RAID_VOL_TYPE_RAID1E:
1880                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1881                         if (ioc->manu_pg10.OEMIdentifier &&
1882                             (le32_to_cpu(ioc->manu_pg10.GenericFlags0) &
1883                             MFG10_GF0_R10_DISPLAY) &&
1884                             !(raid_device->num_pds % 2))
1885                                 r_level = "RAID10";
1886                         else
1887                                 r_level = "RAID1E";
1888                         break;
1889                 case MPI2_RAID_VOL_TYPE_RAID1:
1890                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1891                         r_level = "RAID1";
1892                         break;
1893                 case MPI2_RAID_VOL_TYPE_RAID10:
1894                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1895                         r_level = "RAID10";
1896                         break;
1897                 case MPI2_RAID_VOL_TYPE_UNKNOWN:
1898                 default:
1899                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1900                         r_level = "RAIDX";
1901                         break;
1902                 }
1903
1904                 if (!ioc->hide_ir_msg)
1905                         sdev_printk(KERN_INFO, sdev,
1906                            "%s: handle(0x%04x), wwid(0x%016llx),"
1907                             " pd_count(%d), type(%s)\n",
1908                             r_level, raid_device->handle,
1909                             (unsigned long long)raid_device->wwid,
1910                             raid_device->num_pds, ds);
1911
1912                 if (shost->max_sectors > MPT3SAS_RAID_MAX_SECTORS) {
1913                         blk_queue_max_hw_sectors(sdev->request_queue,
1914                                                 MPT3SAS_RAID_MAX_SECTORS);
1915                         sdev_printk(KERN_INFO, sdev,
1916                                         "Set queue's max_sector to: %u\n",
1917                                                 MPT3SAS_RAID_MAX_SECTORS);
1918                 }
1919
1920                 scsih_change_queue_depth(sdev, qdepth);
1921
1922                 /* raid transport support */
1923                 if (!ioc->is_warpdrive)
1924                         _scsih_set_level(ioc, sdev, raid_device->volume_type);
1925                 return 0;
1926         }
1927
1928         /* non-raid handling */
1929         if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1930                 if (mpt3sas_config_get_volume_handle(ioc, handle,
1931                     &volume_handle)) {
1932                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1933                             "failure at %s:%d/%s()!\n", ioc->name,
1934                             __FILE__, __LINE__, __func__));
1935                         return 1;
1936                 }
1937                 if (volume_handle && mpt3sas_config_get_volume_wwid(ioc,
1938                     volume_handle, &volume_wwid)) {
1939                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1940                             "failure at %s:%d/%s()!\n", ioc->name,
1941                             __FILE__, __LINE__, __func__));
1942                         return 1;
1943                 }
1944         }
1945
1946         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1947         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1948            sas_device_priv_data->sas_target->sas_address);
1949         if (!sas_device) {
1950                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1951                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1952                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1953                     __func__));
1954                 return 1;
1955         }
1956
1957         sas_device->volume_handle = volume_handle;
1958         sas_device->volume_wwid = volume_wwid;
1959         if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
1960                 qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
1961                 ssp_target = 1;
1962                 if (sas_device->device_info &
1963                                 MPI2_SAS_DEVICE_INFO_SEP) {
1964                         sdev_printk(KERN_WARNING, sdev,
1965                         "set ignore_delay_remove for handle(0x%04x)\n",
1966                         sas_device_priv_data->sas_target->handle);
1967                         sas_device_priv_data->ignore_delay_remove = 1;
1968                         ds = "SES";
1969                 } else
1970                         ds = "SSP";
1971         } else {
1972                 qdepth = MPT3SAS_SATA_QUEUE_DEPTH;
1973                 if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
1974                         ds = "STP";
1975                 else if (sas_device->device_info &
1976                     MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1977                         ds = "SATA";
1978         }
1979
1980         sdev_printk(KERN_INFO, sdev, "%s: handle(0x%04x), " \
1981             "sas_addr(0x%016llx), phy(%d), device_name(0x%016llx)\n",
1982             ds, handle, (unsigned long long)sas_device->sas_address,
1983             sas_device->phy, (unsigned long long)sas_device->device_name);
1984         if (sas_device->enclosure_handle != 0)
1985                 sdev_printk(KERN_INFO, sdev,
1986                      "%s: enclosure_logical_id(0x%016llx), slot(%d)\n",
1987                      ds, (unsigned long long)
1988                      sas_device->enclosure_logical_id, sas_device->slot);
1989         if (sas_device->connector_name[0] != '\0')
1990                 sdev_printk(KERN_INFO, sdev,
1991                      "%s: enclosure level(0x%04x), connector name( %s)\n",
1992                      ds, sas_device->enclosure_level,
1993                      sas_device->connector_name);
1994
1995         sas_device_put(sas_device);
1996         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1997
1998         if (!ssp_target)
1999                 _scsih_display_sata_capabilities(ioc, handle, sdev);
2000
2001
2002         scsih_change_queue_depth(sdev, qdepth);
2003
2004         if (ssp_target) {
2005                 sas_read_port_mode_page(sdev);
2006                 _scsih_enable_tlr(ioc, sdev);
2007         }
2008
2009         return 0;
2010 }
2011
2012 /**
2013  * scsih_bios_param - fetch head, sector, cylinder info for a disk
2014  * @sdev: scsi device struct
2015  * @bdev: pointer to block device context
2016  * @capacity: device size (in 512 byte sectors)
2017  * @params: three element array to place output:
2018  *              params[0] number of heads (max 255)
2019  *              params[1] number of sectors (max 63)
2020  *              params[2] number of cylinders
2021  *
2022  * Return nothing.
2023  */
2024 int
2025 scsih_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2026         sector_t capacity, int params[])
2027 {
2028         int             heads;
2029         int             sectors;
2030         sector_t        cylinders;
2031         ulong           dummy;
2032
2033         heads = 64;
2034         sectors = 32;
2035
2036         dummy = heads * sectors;
2037         cylinders = capacity;
2038         sector_div(cylinders, dummy);
2039
2040         /*
2041          * Handle extended translation size for logical drives
2042          * > 1Gb
2043          */
2044         if ((ulong)capacity >= 0x200000) {
2045                 heads = 255;
2046                 sectors = 63;
2047                 dummy = heads * sectors;
2048                 cylinders = capacity;
2049                 sector_div(cylinders, dummy);
2050         }
2051
2052         /* return result */
2053         params[0] = heads;
2054         params[1] = sectors;
2055         params[2] = cylinders;
2056
2057         return 0;
2058 }
2059
2060 /**
2061  * _scsih_response_code - translation of device response code
2062  * @ioc: per adapter object
2063  * @response_code: response code returned by the device
2064  *
2065  * Return nothing.
2066  */
2067 static void
2068 _scsih_response_code(struct MPT3SAS_ADAPTER *ioc, u8 response_code)
2069 {
2070         char *desc;
2071
2072         switch (response_code) {
2073         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
2074                 desc = "task management request completed";
2075                 break;
2076         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
2077                 desc = "invalid frame";
2078                 break;
2079         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2080                 desc = "task management request not supported";
2081                 break;
2082         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
2083                 desc = "task management request failed";
2084                 break;
2085         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2086                 desc = "task management request succeeded";
2087                 break;
2088         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2089                 desc = "invalid lun";
2090                 break;
2091         case 0xA:
2092                 desc = "overlapped tag attempted";
2093                 break;
2094         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2095                 desc = "task queued, however not sent to target";
2096                 break;
2097         default:
2098                 desc = "unknown";
2099                 break;
2100         }
2101         pr_warn(MPT3SAS_FMT "response_code(0x%01x): %s\n",
2102                 ioc->name, response_code, desc);
2103 }
2104
2105 /**
2106  * _scsih_tm_done - tm completion routine
2107  * @ioc: per adapter object
2108  * @smid: system request message index
2109  * @msix_index: MSIX table index supplied by the OS
2110  * @reply: reply message frame(lower 32bit addr)
2111  * Context: none.
2112  *
2113  * The callback handler when using scsih_issue_tm.
2114  *
2115  * Return 1 meaning mf should be freed from _base_interrupt
2116  *        0 means the mf is freed from this function.
2117  */
2118 static u8
2119 _scsih_tm_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
2120 {
2121         MPI2DefaultReply_t *mpi_reply;
2122
2123         if (ioc->tm_cmds.status == MPT3_CMD_NOT_USED)
2124                 return 1;
2125         if (ioc->tm_cmds.smid != smid)
2126                 return 1;
2127         ioc->tm_cmds.status |= MPT3_CMD_COMPLETE;
2128         mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
2129         if (mpi_reply) {
2130                 memcpy(ioc->tm_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
2131                 ioc->tm_cmds.status |= MPT3_CMD_REPLY_VALID;
2132         }
2133         ioc->tm_cmds.status &= ~MPT3_CMD_PENDING;
2134         complete(&ioc->tm_cmds.done);
2135         return 1;
2136 }
2137
2138 /**
2139  * mpt3sas_scsih_set_tm_flag - set per target tm_busy
2140  * @ioc: per adapter object
2141  * @handle: device handle
2142  *
2143  * During taskmangement request, we need to freeze the device queue.
2144  */
2145 void
2146 mpt3sas_scsih_set_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2147 {
2148         struct MPT3SAS_DEVICE *sas_device_priv_data;
2149         struct scsi_device *sdev;
2150         u8 skip = 0;
2151
2152         shost_for_each_device(sdev, ioc->shost) {
2153                 if (skip)
2154                         continue;
2155                 sas_device_priv_data = sdev->hostdata;
2156                 if (!sas_device_priv_data)
2157                         continue;
2158                 if (sas_device_priv_data->sas_target->handle == handle) {
2159                         sas_device_priv_data->sas_target->tm_busy = 1;
2160                         skip = 1;
2161                         ioc->ignore_loginfos = 1;
2162                 }
2163         }
2164 }
2165
2166 /**
2167  * mpt3sas_scsih_clear_tm_flag - clear per target tm_busy
2168  * @ioc: per adapter object
2169  * @handle: device handle
2170  *
2171  * During taskmangement request, we need to freeze the device queue.
2172  */
2173 void
2174 mpt3sas_scsih_clear_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2175 {
2176         struct MPT3SAS_DEVICE *sas_device_priv_data;
2177         struct scsi_device *sdev;
2178         u8 skip = 0;
2179
2180         shost_for_each_device(sdev, ioc->shost) {
2181                 if (skip)
2182                         continue;
2183                 sas_device_priv_data = sdev->hostdata;
2184                 if (!sas_device_priv_data)
2185                         continue;
2186                 if (sas_device_priv_data->sas_target->handle == handle) {
2187                         sas_device_priv_data->sas_target->tm_busy = 0;
2188                         skip = 1;
2189                         ioc->ignore_loginfos = 0;
2190                 }
2191         }
2192 }
2193
2194 /**
2195  * mpt3sas_scsih_issue_tm - main routine for sending tm requests
2196  * @ioc: per adapter struct
2197  * @device_handle: device handle
2198  * @channel: the channel assigned by the OS
2199  * @id: the id assigned by the OS
2200  * @lun: lun number
2201  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in mpi2_init.h)
2202  * @smid_task: smid assigned to the task
2203  * @timeout: timeout in seconds
2204  * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
2205  * Context: user
2206  *
2207  * A generic API for sending task management requests to firmware.
2208  *
2209  * The callback index is set inside `ioc->tm_cb_idx`.
2210  *
2211  * Return SUCCESS or FAILED.
2212  */
2213 int
2214 mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel,
2215         uint id, uint lun, u8 type, u16 smid_task, ulong timeout,
2216         enum mutex_type m_type)
2217 {
2218         Mpi2SCSITaskManagementRequest_t *mpi_request;
2219         Mpi2SCSITaskManagementReply_t *mpi_reply;
2220         u16 smid = 0;
2221         u32 ioc_state;
2222         unsigned long timeleft;
2223         struct scsiio_tracker *scsi_lookup = NULL;
2224         int rc;
2225         u16 msix_task = 0;
2226
2227         if (m_type == TM_MUTEX_ON)
2228                 mutex_lock(&ioc->tm_cmds.mutex);
2229         if (ioc->tm_cmds.status != MPT3_CMD_NOT_USED) {
2230                 pr_info(MPT3SAS_FMT "%s: tm_cmd busy!!!\n",
2231                     __func__, ioc->name);
2232                 rc = FAILED;
2233                 goto err_out;
2234         }
2235
2236         if (ioc->shost_recovery || ioc->remove_host ||
2237             ioc->pci_error_recovery) {
2238                 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
2239                     __func__, ioc->name);
2240                 rc = FAILED;
2241                 goto err_out;
2242         }
2243
2244         ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
2245         if (ioc_state & MPI2_DOORBELL_USED) {
2246                 dhsprintk(ioc, pr_info(MPT3SAS_FMT
2247                         "unexpected doorbell active!\n", ioc->name));
2248                 rc = mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2249                     FORCE_BIG_HAMMER);
2250                 rc = (!rc) ? SUCCESS : FAILED;
2251                 goto err_out;
2252         }
2253
2254         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
2255                 mpt3sas_base_fault_info(ioc, ioc_state &
2256                     MPI2_DOORBELL_DATA_MASK);
2257                 rc = mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2258                     FORCE_BIG_HAMMER);
2259                 rc = (!rc) ? SUCCESS : FAILED;
2260                 goto err_out;
2261         }
2262
2263         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_cb_idx);
2264         if (!smid) {
2265                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
2266                     ioc->name, __func__);
2267                 rc = FAILED;
2268                 goto err_out;
2269         }
2270
2271         if (type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
2272                 scsi_lookup = &ioc->scsi_lookup[smid_task - 1];
2273
2274         dtmprintk(ioc, pr_info(MPT3SAS_FMT
2275                 "sending tm: handle(0x%04x), task_type(0x%02x), smid(%d)\n",
2276                 ioc->name, handle, type, smid_task));
2277         ioc->tm_cmds.status = MPT3_CMD_PENDING;
2278         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2279         ioc->tm_cmds.smid = smid;
2280         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
2281         memset(ioc->tm_cmds.reply, 0, sizeof(Mpi2SCSITaskManagementReply_t));
2282         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
2283         mpi_request->DevHandle = cpu_to_le16(handle);
2284         mpi_request->TaskType = type;
2285         mpi_request->TaskMID = cpu_to_le16(smid_task);
2286         int_to_scsilun(lun, (struct scsi_lun *)mpi_request->LUN);
2287         mpt3sas_scsih_set_tm_flag(ioc, handle);
2288         init_completion(&ioc->tm_cmds.done);
2289         if ((type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) &&
2290                         (scsi_lookup->msix_io < ioc->reply_queue_count))
2291                 msix_task = scsi_lookup->msix_io;
2292         else
2293                 msix_task = 0;
2294         mpt3sas_base_put_smid_hi_priority(ioc, smid, msix_task);
2295         timeleft = wait_for_completion_timeout(&ioc->tm_cmds.done, timeout*HZ);
2296         if (!(ioc->tm_cmds.status & MPT3_CMD_COMPLETE)) {
2297                 pr_err(MPT3SAS_FMT "%s: timeout\n",
2298                     ioc->name, __func__);
2299                 _debug_dump_mf(mpi_request,
2300                     sizeof(Mpi2SCSITaskManagementRequest_t)/4);
2301                 if (!(ioc->tm_cmds.status & MPT3_CMD_RESET)) {
2302                         rc = mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2303                             FORCE_BIG_HAMMER);
2304                         rc = (!rc) ? SUCCESS : FAILED;
2305                         ioc->tm_cmds.status = MPT3_CMD_NOT_USED;
2306                         mpt3sas_scsih_clear_tm_flag(ioc, handle);
2307                         goto err_out;
2308                 }
2309         }
2310
2311         /* sync IRQs in case those were busy during flush. */
2312         mpt3sas_base_sync_reply_irqs(ioc);
2313
2314         if (ioc->tm_cmds.status & MPT3_CMD_REPLY_VALID) {
2315                 mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
2316                 mpi_reply = ioc->tm_cmds.reply;
2317                 dtmprintk(ioc, pr_info(MPT3SAS_FMT "complete tm: " \
2318                     "ioc_status(0x%04x), loginfo(0x%08x), term_count(0x%08x)\n",
2319                     ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
2320                     le32_to_cpu(mpi_reply->IOCLogInfo),
2321                     le32_to_cpu(mpi_reply->TerminationCount)));
2322                 if (ioc->logging_level & MPT_DEBUG_TM) {
2323                         _scsih_response_code(ioc, mpi_reply->ResponseCode);
2324                         if (mpi_reply->IOCStatus)
2325                                 _debug_dump_mf(mpi_request,
2326                                     sizeof(Mpi2SCSITaskManagementRequest_t)/4);
2327                 }
2328         }
2329
2330         switch (type) {
2331         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
2332                 rc = SUCCESS;
2333                 if (scsi_lookup->scmd == NULL)
2334                         break;
2335                 rc = FAILED;
2336                 break;
2337
2338         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
2339                 if (_scsih_scsi_lookup_find_by_target(ioc, id, channel))
2340                         rc = FAILED;
2341                 else
2342                         rc = SUCCESS;
2343                 break;
2344         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
2345         case MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
2346                 if (_scsih_scsi_lookup_find_by_lun(ioc, id, lun, channel))
2347                         rc = FAILED;
2348                 else
2349                         rc = SUCCESS;
2350                 break;
2351         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
2352                 rc = SUCCESS;
2353                 break;
2354         default:
2355                 rc = FAILED;
2356                 break;
2357         }
2358
2359         mpt3sas_scsih_clear_tm_flag(ioc, handle);
2360         ioc->tm_cmds.status = MPT3_CMD_NOT_USED;
2361         if (m_type == TM_MUTEX_ON)
2362                 mutex_unlock(&ioc->tm_cmds.mutex);
2363
2364         return rc;
2365
2366  err_out:
2367         if (m_type == TM_MUTEX_ON)
2368                 mutex_unlock(&ioc->tm_cmds.mutex);
2369         return rc;
2370 }
2371
2372 /**
2373  * _scsih_tm_display_info - displays info about the device
2374  * @ioc: per adapter struct
2375  * @scmd: pointer to scsi command object
2376  *
2377  * Called by task management callback handlers.
2378  */
2379 static void
2380 _scsih_tm_display_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd)
2381 {
2382         struct scsi_target *starget = scmd->device->sdev_target;
2383         struct MPT3SAS_TARGET *priv_target = starget->hostdata;
2384         struct _sas_device *sas_device = NULL;
2385         unsigned long flags;
2386         char *device_str = NULL;
2387
2388         if (!priv_target)
2389                 return;
2390         if (ioc->hide_ir_msg)
2391                 device_str = "WarpDrive";
2392         else
2393                 device_str = "volume";
2394
2395         scsi_print_command(scmd);
2396         if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2397                 starget_printk(KERN_INFO, starget,
2398                         "%s handle(0x%04x), %s wwid(0x%016llx)\n",
2399                         device_str, priv_target->handle,
2400                     device_str, (unsigned long long)priv_target->sas_address);
2401         } else {
2402                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
2403                 sas_device = __mpt3sas_get_sdev_from_target(ioc, priv_target);
2404                 if (sas_device) {
2405                         if (priv_target->flags &
2406                             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2407                                 starget_printk(KERN_INFO, starget,
2408                                     "volume handle(0x%04x), "
2409                                     "volume wwid(0x%016llx)\n",
2410                                     sas_device->volume_handle,
2411                                    (unsigned long long)sas_device->volume_wwid);
2412                         }
2413                         starget_printk(KERN_INFO, starget,
2414                             "handle(0x%04x), sas_address(0x%016llx), phy(%d)\n",
2415                             sas_device->handle,
2416                             (unsigned long long)sas_device->sas_address,
2417                             sas_device->phy);
2418                         if (sas_device->enclosure_handle != 0)
2419                                 starget_printk(KERN_INFO, starget,
2420                                  "enclosure_logical_id(0x%016llx), slot(%d)\n",
2421                                  (unsigned long long)
2422                                  sas_device->enclosure_logical_id,
2423                                  sas_device->slot);
2424                         if (sas_device->connector_name[0] != '\0')
2425                                 starget_printk(KERN_INFO, starget,
2426                                 "enclosure level(0x%04x),connector name(%s)\n",
2427                                  sas_device->enclosure_level,
2428                                  sas_device->connector_name);
2429
2430                         sas_device_put(sas_device);
2431                 }
2432                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
2433         }
2434 }
2435
2436 /**
2437  * scsih_abort - eh threads main abort routine
2438  * @scmd: pointer to scsi command object
2439  *
2440  * Returns SUCCESS if command aborted else FAILED
2441  */
2442 int
2443 scsih_abort(struct scsi_cmnd *scmd)
2444 {
2445         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2446         struct MPT3SAS_DEVICE *sas_device_priv_data;
2447         u16 smid;
2448         u16 handle;
2449         int r;
2450
2451         sdev_printk(KERN_INFO, scmd->device,
2452                 "attempting task abort! scmd(%p)\n", scmd);
2453         _scsih_tm_display_info(ioc, scmd);
2454
2455         sas_device_priv_data = scmd->device->hostdata;
2456         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2457                 sdev_printk(KERN_INFO, scmd->device,
2458                         "device been deleted! scmd(%p)\n", scmd);
2459                 scmd->result = DID_NO_CONNECT << 16;
2460                 scmd->scsi_done(scmd);
2461                 r = SUCCESS;
2462                 goto out;
2463         }
2464
2465         /* search for the command */
2466         smid = _scsih_scsi_lookup_find_by_scmd(ioc, scmd);
2467         if (!smid) {
2468                 scmd->result = DID_RESET << 16;
2469                 r = SUCCESS;
2470                 goto out;
2471         }
2472
2473         /* for hidden raid components and volumes this is not supported */
2474         if (sas_device_priv_data->sas_target->flags &
2475             MPT_TARGET_FLAGS_RAID_COMPONENT ||
2476             sas_device_priv_data->sas_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2477                 scmd->result = DID_RESET << 16;
2478                 r = FAILED;
2479                 goto out;
2480         }
2481
2482         mpt3sas_halt_firmware(ioc);
2483
2484         handle = sas_device_priv_data->sas_target->handle;
2485         r = mpt3sas_scsih_issue_tm(ioc, handle, scmd->device->channel,
2486             scmd->device->id, scmd->device->lun,
2487             MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid, 30, TM_MUTEX_ON);
2488
2489  out:
2490         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
2491             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2492         return r;
2493 }
2494
2495 /**
2496  * scsih_dev_reset - eh threads main device reset routine
2497  * @scmd: pointer to scsi command object
2498  *
2499  * Returns SUCCESS if command aborted else FAILED
2500  */
2501 int
2502 scsih_dev_reset(struct scsi_cmnd *scmd)
2503 {
2504         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2505         struct MPT3SAS_DEVICE *sas_device_priv_data;
2506         struct _sas_device *sas_device = NULL;
2507         u16     handle;
2508         int r;
2509
2510         struct scsi_target *starget = scmd->device->sdev_target;
2511         struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2512
2513         sdev_printk(KERN_INFO, scmd->device,
2514                 "attempting device reset! scmd(%p)\n", scmd);
2515         _scsih_tm_display_info(ioc, scmd);
2516
2517         sas_device_priv_data = scmd->device->hostdata;
2518         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2519                 sdev_printk(KERN_INFO, scmd->device,
2520                         "device been deleted! scmd(%p)\n", scmd);
2521                 scmd->result = DID_NO_CONNECT << 16;
2522                 scmd->scsi_done(scmd);
2523                 r = SUCCESS;
2524                 goto out;
2525         }
2526
2527         /* for hidden raid components obtain the volume_handle */
2528         handle = 0;
2529         if (sas_device_priv_data->sas_target->flags &
2530             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2531                 sas_device = mpt3sas_get_sdev_from_target(ioc,
2532                                 target_priv_data);
2533                 if (sas_device)
2534                         handle = sas_device->volume_handle;
2535         } else
2536                 handle = sas_device_priv_data->sas_target->handle;
2537
2538         if (!handle) {
2539                 scmd->result = DID_RESET << 16;
2540                 r = FAILED;
2541                 goto out;
2542         }
2543
2544         r = mpt3sas_scsih_issue_tm(ioc, handle, scmd->device->channel,
2545             scmd->device->id, scmd->device->lun,
2546             MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 30, TM_MUTEX_ON);
2547
2548  out:
2549         sdev_printk(KERN_INFO, scmd->device, "device reset: %s scmd(%p)\n",
2550             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2551
2552         if (sas_device)
2553                 sas_device_put(sas_device);
2554
2555         return r;
2556 }
2557
2558 /**
2559  * scsih_target_reset - eh threads main target reset routine
2560  * @scmd: pointer to scsi command object
2561  *
2562  * Returns SUCCESS if command aborted else FAILED
2563  */
2564 int
2565 scsih_target_reset(struct scsi_cmnd *scmd)
2566 {
2567         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2568         struct MPT3SAS_DEVICE *sas_device_priv_data;
2569         struct _sas_device *sas_device = NULL;
2570         u16     handle;
2571         int r;
2572         struct scsi_target *starget = scmd->device->sdev_target;
2573         struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2574
2575         starget_printk(KERN_INFO, starget, "attempting target reset! scmd(%p)\n",
2576                 scmd);
2577         _scsih_tm_display_info(ioc, scmd);
2578
2579         sas_device_priv_data = scmd->device->hostdata;
2580         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2581                 starget_printk(KERN_INFO, starget, "target been deleted! scmd(%p)\n",
2582                         scmd);
2583                 scmd->result = DID_NO_CONNECT << 16;
2584                 scmd->scsi_done(scmd);
2585                 r = SUCCESS;
2586                 goto out;
2587         }
2588
2589         /* for hidden raid components obtain the volume_handle */
2590         handle = 0;
2591         if (sas_device_priv_data->sas_target->flags &
2592             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2593                 sas_device = mpt3sas_get_sdev_from_target(ioc,
2594                                 target_priv_data);
2595                 if (sas_device)
2596                         handle = sas_device->volume_handle;
2597         } else
2598                 handle = sas_device_priv_data->sas_target->handle;
2599
2600         if (!handle) {
2601                 scmd->result = DID_RESET << 16;
2602                 r = FAILED;
2603                 goto out;
2604         }
2605
2606         r = mpt3sas_scsih_issue_tm(ioc, handle, scmd->device->channel,
2607             scmd->device->id, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
2608             30, TM_MUTEX_ON);
2609
2610  out:
2611         starget_printk(KERN_INFO, starget, "target reset: %s scmd(%p)\n",
2612             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2613
2614         if (sas_device)
2615                 sas_device_put(sas_device);
2616
2617         return r;
2618 }
2619
2620
2621 /**
2622  * scsih_host_reset - eh threads main host reset routine
2623  * @scmd: pointer to scsi command object
2624  *
2625  * Returns SUCCESS if command aborted else FAILED
2626  */
2627 int
2628 scsih_host_reset(struct scsi_cmnd *scmd)
2629 {
2630         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2631         int r, retval;
2632
2633         pr_info(MPT3SAS_FMT "attempting host reset! scmd(%p)\n",
2634             ioc->name, scmd);
2635         scsi_print_command(scmd);
2636
2637         if (ioc->is_driver_loading) {
2638                 pr_info(MPT3SAS_FMT "Blocking the host reset\n",
2639                     ioc->name);
2640                 r = FAILED;
2641                 goto out;
2642         }
2643
2644         retval = mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2645             FORCE_BIG_HAMMER);
2646         r = (retval < 0) ? FAILED : SUCCESS;
2647 out:
2648         pr_info(MPT3SAS_FMT "host reset: %s scmd(%p)\n",
2649             ioc->name, ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2650
2651         return r;
2652 }
2653
2654 /**
2655  * _scsih_fw_event_add - insert and queue up fw_event
2656  * @ioc: per adapter object
2657  * @fw_event: object describing the event
2658  * Context: This function will acquire ioc->fw_event_lock.
2659  *
2660  * This adds the firmware event object into link list, then queues it up to
2661  * be processed from user context.
2662  *
2663  * Return nothing.
2664  */
2665 static void
2666 _scsih_fw_event_add(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
2667 {
2668         unsigned long flags;
2669
2670         if (ioc->firmware_event_thread == NULL)
2671                 return;
2672
2673         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2674         fw_event_work_get(fw_event);
2675         INIT_LIST_HEAD(&fw_event->list);
2676         list_add_tail(&fw_event->list, &ioc->fw_event_list);
2677         INIT_WORK(&fw_event->work, _firmware_event_work);
2678         fw_event_work_get(fw_event);
2679         queue_work(ioc->firmware_event_thread, &fw_event->work);
2680         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2681 }
2682
2683 /**
2684  * _scsih_fw_event_del_from_list - delete fw_event from the list
2685  * @ioc: per adapter object
2686  * @fw_event: object describing the event
2687  * Context: This function will acquire ioc->fw_event_lock.
2688  *
2689  * If the fw_event is on the fw_event_list, remove it and do a put.
2690  *
2691  * Return nothing.
2692  */
2693 static void
2694 _scsih_fw_event_del_from_list(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work
2695         *fw_event)
2696 {
2697         unsigned long flags;
2698
2699         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2700         if (!list_empty(&fw_event->list)) {
2701                 list_del_init(&fw_event->list);
2702                 fw_event_work_put(fw_event);
2703         }
2704         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2705 }
2706
2707
2708  /**
2709  * mpt3sas_send_trigger_data_event - send event for processing trigger data
2710  * @ioc: per adapter object
2711  * @event_data: trigger event data
2712  *
2713  * Return nothing.
2714  */
2715 void
2716 mpt3sas_send_trigger_data_event(struct MPT3SAS_ADAPTER *ioc,
2717         struct SL_WH_TRIGGERS_EVENT_DATA_T *event_data)
2718 {
2719         struct fw_event_work *fw_event;
2720         u16 sz;
2721
2722         if (ioc->is_driver_loading)
2723                 return;
2724         sz = sizeof(*event_data);
2725         fw_event = alloc_fw_event_work(sz);
2726         if (!fw_event)
2727                 return;
2728         fw_event->event = MPT3SAS_PROCESS_TRIGGER_DIAG;
2729         fw_event->ioc = ioc;
2730         memcpy(fw_event->event_data, event_data, sizeof(*event_data));
2731         _scsih_fw_event_add(ioc, fw_event);
2732         fw_event_work_put(fw_event);
2733 }
2734
2735 /**
2736  * _scsih_error_recovery_delete_devices - remove devices not responding
2737  * @ioc: per adapter object
2738  *
2739  * Return nothing.
2740  */
2741 static void
2742 _scsih_error_recovery_delete_devices(struct MPT3SAS_ADAPTER *ioc)
2743 {
2744         struct fw_event_work *fw_event;
2745
2746         if (ioc->is_driver_loading)
2747                 return;
2748         fw_event = alloc_fw_event_work(0);
2749         if (!fw_event)
2750                 return;
2751         fw_event->event = MPT3SAS_REMOVE_UNRESPONDING_DEVICES;
2752         fw_event->ioc = ioc;
2753         _scsih_fw_event_add(ioc, fw_event);
2754         fw_event_work_put(fw_event);
2755 }
2756
2757 /**
2758  * mpt3sas_port_enable_complete - port enable completed (fake event)
2759  * @ioc: per adapter object
2760  *
2761  * Return nothing.
2762  */
2763 void
2764 mpt3sas_port_enable_complete(struct MPT3SAS_ADAPTER *ioc)
2765 {
2766         struct fw_event_work *fw_event;
2767
2768         fw_event = alloc_fw_event_work(0);
2769         if (!fw_event)
2770                 return;
2771         fw_event->event = MPT3SAS_PORT_ENABLE_COMPLETE;
2772         fw_event->ioc = ioc;
2773         _scsih_fw_event_add(ioc, fw_event);
2774         fw_event_work_put(fw_event);
2775 }
2776
2777 static struct fw_event_work *dequeue_next_fw_event(struct MPT3SAS_ADAPTER *ioc)
2778 {
2779         unsigned long flags;
2780         struct fw_event_work *fw_event = NULL;
2781
2782         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2783         if (!list_empty(&ioc->fw_event_list)) {
2784                 fw_event = list_first_entry(&ioc->fw_event_list,
2785                                 struct fw_event_work, list);
2786                 list_del_init(&fw_event->list);
2787         }
2788         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2789
2790         return fw_event;
2791 }
2792
2793 /**
2794  * _scsih_fw_event_cleanup_queue - cleanup event queue
2795  * @ioc: per adapter object
2796  *
2797  * Walk the firmware event queue, either killing timers, or waiting
2798  * for outstanding events to complete
2799  *
2800  * Return nothing.
2801  */
2802 static void
2803 _scsih_fw_event_cleanup_queue(struct MPT3SAS_ADAPTER *ioc)
2804 {
2805         struct fw_event_work *fw_event;
2806
2807         if (list_empty(&ioc->fw_event_list) ||
2808              !ioc->firmware_event_thread || in_interrupt())
2809                 return;
2810
2811         while ((fw_event = dequeue_next_fw_event(ioc))) {
2812                 /*
2813                  * Wait on the fw_event to complete. If this returns 1, then
2814                  * the event was never executed, and we need a put for the
2815                  * reference the work had on the fw_event.
2816                  *
2817                  * If it did execute, we wait for it to finish, and the put will
2818                  * happen from _firmware_event_work()
2819                  */
2820                 if (cancel_work_sync(&fw_event->work))
2821                         fw_event_work_put(fw_event);
2822
2823                 fw_event_work_put(fw_event);
2824         }
2825 }
2826
2827 /**
2828  * _scsih_internal_device_block - block the sdev device
2829  * @sdev: per device object
2830  * @sas_device_priv_data : per device driver private data
2831  *
2832  * make sure device is blocked without error, if not
2833  * print an error
2834  */
2835 static void
2836 _scsih_internal_device_block(struct scsi_device *sdev,
2837                         struct MPT3SAS_DEVICE *sas_device_priv_data)
2838 {
2839         int r = 0;
2840
2841         sdev_printk(KERN_INFO, sdev, "device_block, handle(0x%04x)\n",
2842             sas_device_priv_data->sas_target->handle);
2843         sas_device_priv_data->block = 1;
2844
2845         r = scsi_internal_device_block(sdev);
2846         if (r == -EINVAL)
2847                 sdev_printk(KERN_WARNING, sdev,
2848                     "device_block failed with return(%d) for handle(0x%04x)\n",
2849                     sas_device_priv_data->sas_target->handle, r);
2850 }
2851
2852 /**
2853  * _scsih_internal_device_unblock - unblock the sdev device
2854  * @sdev: per device object
2855  * @sas_device_priv_data : per device driver private data
2856  * make sure device is unblocked without error, if not retry
2857  * by blocking and then unblocking
2858  */
2859
2860 static void
2861 _scsih_internal_device_unblock(struct scsi_device *sdev,
2862                         struct MPT3SAS_DEVICE *sas_device_priv_data)
2863 {
2864         int r = 0;
2865
2866         sdev_printk(KERN_WARNING, sdev, "device_unblock and setting to running, "
2867             "handle(0x%04x)\n", sas_device_priv_data->sas_target->handle);
2868         sas_device_priv_data->block = 0;
2869         r = scsi_internal_device_unblock(sdev, SDEV_RUNNING);
2870         if (r == -EINVAL) {
2871                 /* The device has been set to SDEV_RUNNING by SD layer during
2872                  * device addition but the request queue is still stopped by
2873                  * our earlier block call. We need to perform a block again
2874                  * to get the device to SDEV_BLOCK and then to SDEV_RUNNING */
2875
2876                 sdev_printk(KERN_WARNING, sdev,
2877                     "device_unblock failed with return(%d) for handle(0x%04x) "
2878                     "performing a block followed by an unblock\n",
2879                     sas_device_priv_data->sas_target->handle, r);
2880                 sas_device_priv_data->block = 1;
2881                 r = scsi_internal_device_block(sdev);
2882                 if (r)
2883                         sdev_printk(KERN_WARNING, sdev, "retried device_block "
2884                             "failed with return(%d) for handle(0x%04x)\n",
2885                             sas_device_priv_data->sas_target->handle, r);
2886
2887                 sas_device_priv_data->block = 0;
2888                 r = scsi_internal_device_unblock(sdev, SDEV_RUNNING);
2889                 if (r)
2890                         sdev_printk(KERN_WARNING, sdev, "retried device_unblock"
2891                             " failed with return(%d) for handle(0x%04x)\n",
2892                             sas_device_priv_data->sas_target->handle, r);
2893         }
2894 }
2895
2896 /**
2897  * _scsih_ublock_io_all_device - unblock every device
2898  * @ioc: per adapter object
2899  *
2900  * change the device state from block to running
2901  */
2902 static void
2903 _scsih_ublock_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2904 {
2905         struct MPT3SAS_DEVICE *sas_device_priv_data;
2906         struct scsi_device *sdev;
2907
2908         shost_for_each_device(sdev, ioc->shost) {
2909                 sas_device_priv_data = sdev->hostdata;
2910                 if (!sas_device_priv_data)
2911                         continue;
2912                 if (!sas_device_priv_data->block)
2913                         continue;
2914
2915                 dewtprintk(ioc, sdev_printk(KERN_INFO, sdev,
2916                         "device_running, handle(0x%04x)\n",
2917                     sas_device_priv_data->sas_target->handle));
2918                 _scsih_internal_device_unblock(sdev, sas_device_priv_data);
2919         }
2920 }
2921
2922
2923 /**
2924  * _scsih_ublock_io_device - prepare device to be deleted
2925  * @ioc: per adapter object
2926  * @sas_addr: sas address
2927  *
2928  * unblock then put device in offline state
2929  */
2930 static void
2931 _scsih_ublock_io_device(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
2932 {
2933         struct MPT3SAS_DEVICE *sas_device_priv_data;
2934         struct scsi_device *sdev;
2935
2936         shost_for_each_device(sdev, ioc->shost) {
2937                 sas_device_priv_data = sdev->hostdata;
2938                 if (!sas_device_priv_data)
2939                         continue;
2940                 if (sas_device_priv_data->sas_target->sas_address
2941                     != sas_address)
2942                         continue;
2943                 if (sas_device_priv_data->block)
2944                         _scsih_internal_device_unblock(sdev,
2945                                 sas_device_priv_data);
2946         }
2947 }
2948
2949 /**
2950  * _scsih_block_io_all_device - set the device state to SDEV_BLOCK
2951  * @ioc: per adapter object
2952  * @handle: device handle
2953  *
2954  * During device pull we need to appropiately set the sdev state.
2955  */
2956 static void
2957 _scsih_block_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2958 {
2959         struct MPT3SAS_DEVICE *sas_device_priv_data;
2960         struct scsi_device *sdev;
2961
2962         shost_for_each_device(sdev, ioc->shost) {
2963                 sas_device_priv_data = sdev->hostdata;
2964                 if (!sas_device_priv_data)
2965                         continue;
2966                 if (sas_device_priv_data->block)
2967                         continue;
2968                 if (sas_device_priv_data->ignore_delay_remove) {
2969                         sdev_printk(KERN_INFO, sdev,
2970                         "%s skip device_block for SES handle(0x%04x)\n",
2971                         __func__, sas_device_priv_data->sas_target->handle);
2972                         continue;
2973                 }
2974                 _scsih_internal_device_block(sdev, sas_device_priv_data);
2975         }
2976 }
2977
2978 /**
2979  * _scsih_block_io_device - set the device state to SDEV_BLOCK
2980  * @ioc: per adapter object
2981  * @handle: device handle
2982  *
2983  * During device pull we need to appropiately set the sdev state.
2984  */
2985 static void
2986 _scsih_block_io_device(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2987 {
2988         struct MPT3SAS_DEVICE *sas_device_priv_data;
2989         struct scsi_device *sdev;
2990         struct _sas_device *sas_device;
2991
2992         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
2993         if (!sas_device)
2994                 return;
2995
2996         shost_for_each_device(sdev, ioc->shost) {
2997                 sas_device_priv_data = sdev->hostdata;
2998                 if (!sas_device_priv_data)
2999                         continue;
3000                 if (sas_device_priv_data->sas_target->handle != handle)
3001                         continue;
3002                 if (sas_device_priv_data->block)
3003                         continue;
3004                 if (sas_device->pend_sas_rphy_add)
3005                         continue;
3006                 if (sas_device_priv_data->ignore_delay_remove) {
3007                         sdev_printk(KERN_INFO, sdev,
3008                         "%s skip device_block for SES handle(0x%04x)\n",
3009                         __func__, sas_device_priv_data->sas_target->handle);
3010                         continue;
3011                 }
3012                 _scsih_internal_device_block(sdev, sas_device_priv_data);
3013         }
3014
3015         sas_device_put(sas_device);
3016 }
3017
3018 /**
3019  * _scsih_block_io_to_children_attached_to_ex
3020  * @ioc: per adapter object
3021  * @sas_expander: the sas_device object
3022  *
3023  * This routine set sdev state to SDEV_BLOCK for all devices
3024  * attached to this expander. This function called when expander is
3025  * pulled.
3026  */
3027 static void
3028 _scsih_block_io_to_children_attached_to_ex(struct MPT3SAS_ADAPTER *ioc,
3029         struct _sas_node *sas_expander)
3030 {
3031         struct _sas_port *mpt3sas_port;
3032         struct _sas_device *sas_device;
3033         struct _sas_node *expander_sibling;
3034         unsigned long flags;
3035
3036         if (!sas_expander)
3037                 return;
3038
3039         list_for_each_entry(mpt3sas_port,
3040            &sas_expander->sas_port_list, port_list) {
3041                 if (mpt3sas_port->remote_identify.device_type ==
3042                     SAS_END_DEVICE) {
3043                         spin_lock_irqsave(&ioc->sas_device_lock, flags);
3044                         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
3045                             mpt3sas_port->remote_identify.sas_address);
3046                         if (sas_device) {
3047                                 set_bit(sas_device->handle,
3048                                                 ioc->blocking_handles);
3049                                 sas_device_put(sas_device);
3050                         }
3051                         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3052                 }
3053         }
3054
3055         list_for_each_entry(mpt3sas_port,
3056            &sas_expander->sas_port_list, port_list) {
3057
3058                 if (mpt3sas_port->remote_identify.device_type ==
3059                     SAS_EDGE_EXPANDER_DEVICE ||
3060                     mpt3sas_port->remote_identify.device_type ==
3061                     SAS_FANOUT_EXPANDER_DEVICE) {
3062                         expander_sibling =
3063                             mpt3sas_scsih_expander_find_by_sas_address(
3064                             ioc, mpt3sas_port->remote_identify.sas_address);
3065                         _scsih_block_io_to_children_attached_to_ex(ioc,
3066                             expander_sibling);
3067                 }
3068         }
3069 }
3070
3071 /**
3072  * _scsih_block_io_to_children_attached_directly
3073  * @ioc: per adapter object
3074  * @event_data: topology change event data
3075  *
3076  * This routine set sdev state to SDEV_BLOCK for all devices
3077  * direct attached during device pull.
3078  */
3079 static void
3080 _scsih_block_io_to_children_attached_directly(struct MPT3SAS_ADAPTER *ioc,
3081         Mpi2EventDataSasTopologyChangeList_t *event_data)
3082 {
3083         int i;
3084         u16 handle;
3085         u16 reason_code;
3086
3087         for (i = 0; i < event_data->NumEntries; i++) {
3088                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3089                 if (!handle)
3090                         continue;
3091                 reason_code = event_data->PHY[i].PhyStatus &
3092                     MPI2_EVENT_SAS_TOPO_RC_MASK;
3093                 if (reason_code == MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING)
3094                         _scsih_block_io_device(ioc, handle);
3095         }
3096 }
3097
3098 /**
3099  * _scsih_tm_tr_send - send task management request
3100  * @ioc: per adapter object
3101  * @handle: device handle
3102  * Context: interrupt time.
3103  *
3104  * This code is to initiate the device removal handshake protocol
3105  * with controller firmware.  This function will issue target reset
3106  * using high priority request queue.  It will send a sas iounit
3107  * control request (MPI2_SAS_OP_REMOVE_DEVICE) from this completion.
3108  *
3109  * This is designed to send muliple task management request at the same
3110  * time to the fifo. If the fifo is full, we will append the request,
3111  * and process it in a future completion.
3112  */
3113 static void
3114 _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3115 {
3116         Mpi2SCSITaskManagementRequest_t *mpi_request;
3117         u16 smid;
3118         struct _sas_device *sas_device = NULL;
3119         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
3120         u64 sas_address = 0;
3121         unsigned long flags;
3122         struct _tr_list *delayed_tr;
3123         u32 ioc_state;
3124
3125         if (ioc->remove_host) {
3126                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3127                         "%s: host has been removed: handle(0x%04x)\n",
3128                         __func__, ioc->name, handle));
3129                 return;
3130         } else if (ioc->pci_error_recovery) {
3131                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3132                         "%s: host in pci error recovery: handle(0x%04x)\n",
3133                         __func__, ioc->name,
3134                     handle));
3135                 return;
3136         }
3137         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3138         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3139                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3140                         "%s: host is not operational: handle(0x%04x)\n",
3141                         __func__, ioc->name,
3142                    handle));
3143                 return;
3144         }
3145
3146         /* if PD, then return */
3147         if (test_bit(handle, ioc->pd_handles))
3148                 return;
3149
3150         spin_lock_irqsave(&ioc->sas_device_lock, flags);
3151         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
3152         if (sas_device && sas_device->starget &&
3153             sas_device->starget->hostdata) {
3154                 sas_target_priv_data = sas_device->starget->hostdata;
3155                 sas_target_priv_data->deleted = 1;
3156                 sas_address = sas_device->sas_address;
3157         }
3158         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3159
3160         if (sas_target_priv_data) {
3161                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3162                         "setting delete flag: handle(0x%04x), sas_addr(0x%016llx)\n",
3163                         ioc->name, handle,
3164                     (unsigned long long)sas_address));
3165                 if (sas_device->enclosure_handle != 0)
3166                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3167                          "setting delete flag:enclosure logical id(0x%016llx),"
3168                          " slot(%d)\n", ioc->name, (unsigned long long)
3169                           sas_device->enclosure_logical_id,
3170                           sas_device->slot));
3171                 if (sas_device->connector_name[0] != '\0')
3172                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3173                          "setting delete flag: enclosure level(0x%04x),"
3174                          " connector name( %s)\n", ioc->name,
3175                           sas_device->enclosure_level,
3176                           sas_device->connector_name));
3177                 _scsih_ublock_io_device(ioc, sas_address);
3178                 sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
3179         }
3180
3181         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_cb_idx);
3182         if (!smid) {
3183                 delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3184                 if (!delayed_tr)
3185                         goto out;
3186                 INIT_LIST_HEAD(&delayed_tr->list);
3187                 delayed_tr->handle = handle;
3188                 list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3189                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3190                     "DELAYED:tr:handle(0x%04x), (open)\n",
3191                     ioc->name, handle));
3192                 goto out;
3193         }
3194
3195         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3196                 "tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3197                 ioc->name, handle, smid,
3198             ioc->tm_tr_cb_idx));
3199         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3200         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3201         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3202         mpi_request->DevHandle = cpu_to_le16(handle);
3203         mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3204         mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
3205         mpt3sas_trigger_master(ioc, MASTER_TRIGGER_DEVICE_REMOVAL);
3206
3207 out:
3208         if (sas_device)
3209                 sas_device_put(sas_device);
3210 }
3211
3212 /**
3213  * _scsih_tm_tr_complete -
3214  * @ioc: per adapter object
3215  * @smid: system request message index
3216  * @msix_index: MSIX table index supplied by the OS
3217  * @reply: reply message frame(lower 32bit addr)
3218  * Context: interrupt time.
3219  *
3220  * This is the target reset completion routine.
3221  * This code is part of the code to initiate the device removal
3222  * handshake protocol with controller firmware.
3223  * It will send a sas iounit control request (MPI2_SAS_OP_REMOVE_DEVICE)
3224  *
3225  * Return 1 meaning mf should be freed from _base_interrupt
3226  *        0 means the mf is freed from this function.
3227  */
3228 static u8
3229 _scsih_tm_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3230         u32 reply)
3231 {
3232         u16 handle;
3233         Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3234         Mpi2SCSITaskManagementReply_t *mpi_reply =
3235             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3236         Mpi2SasIoUnitControlRequest_t *mpi_request;
3237         u16 smid_sas_ctrl;
3238         u32 ioc_state;
3239         struct _sc_list *delayed_sc;
3240
3241         if (ioc->remove_host) {
3242                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3243                         "%s: host has been removed\n", __func__, ioc->name));
3244                 return 1;
3245         } else if (ioc->pci_error_recovery) {
3246                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3247                         "%s: host in pci error recovery\n", __func__,
3248                         ioc->name));
3249                 return 1;
3250         }
3251         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3252         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3253                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3254                         "%s: host is not operational\n", __func__, ioc->name));
3255                 return 1;
3256         }
3257         if (unlikely(!mpi_reply)) {
3258                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3259                     ioc->name, __FILE__, __LINE__, __func__);
3260                 return 1;
3261         }
3262         mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3263         handle = le16_to_cpu(mpi_request_tm->DevHandle);
3264         if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3265                 dewtprintk(ioc, pr_err(MPT3SAS_FMT
3266                         "spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3267                         ioc->name, handle,
3268                     le16_to_cpu(mpi_reply->DevHandle), smid));
3269                 return 0;
3270         }
3271
3272         mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
3273         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3274             "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3275             "loginfo(0x%08x), completed(%d)\n", ioc->name,
3276             handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3277             le32_to_cpu(mpi_reply->IOCLogInfo),
3278             le32_to_cpu(mpi_reply->TerminationCount)));
3279
3280         smid_sas_ctrl = mpt3sas_base_get_smid(ioc, ioc->tm_sas_control_cb_idx);
3281         if (!smid_sas_ctrl) {
3282                 delayed_sc = kzalloc(sizeof(*delayed_sc), GFP_ATOMIC);
3283                 if (!delayed_sc)
3284                         return _scsih_check_for_pending_tm(ioc, smid);
3285                 INIT_LIST_HEAD(&delayed_sc->list);
3286                 delayed_sc->handle = mpi_request_tm->DevHandle;
3287                 list_add_tail(&delayed_sc->list, &ioc->delayed_sc_list);
3288                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3289                     "DELAYED:sc:handle(0x%04x), (open)\n",
3290                     ioc->name, handle));
3291                 return _scsih_check_for_pending_tm(ioc, smid);
3292         }
3293
3294         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3295                 "sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3296                 ioc->name, handle, smid_sas_ctrl,
3297             ioc->tm_sas_control_cb_idx));
3298         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid_sas_ctrl);
3299         memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3300         mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3301         mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3302         mpi_request->DevHandle = mpi_request_tm->DevHandle;
3303         mpt3sas_base_put_smid_default(ioc, smid_sas_ctrl);
3304
3305         return _scsih_check_for_pending_tm(ioc, smid);
3306 }
3307
3308
3309 /**
3310  * _scsih_sas_control_complete - completion routine
3311  * @ioc: per adapter object
3312  * @smid: system request message index
3313  * @msix_index: MSIX table index supplied by the OS
3314  * @reply: reply message frame(lower 32bit addr)
3315  * Context: interrupt time.
3316  *
3317  * This is the sas iounit control completion routine.
3318  * This code is part of the code to initiate the device removal
3319  * handshake protocol with controller firmware.
3320  *
3321  * Return 1 meaning mf should be freed from _base_interrupt
3322  *        0 means the mf is freed from this function.
3323  */
3324 static u8
3325 _scsih_sas_control_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3326         u8 msix_index, u32 reply)
3327 {
3328         Mpi2SasIoUnitControlReply_t *mpi_reply =
3329             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3330
3331         if (likely(mpi_reply)) {
3332                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3333                 "sc_complete:handle(0x%04x), (open) "
3334                 "smid(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
3335                 ioc->name, le16_to_cpu(mpi_reply->DevHandle), smid,
3336                 le16_to_cpu(mpi_reply->IOCStatus),
3337                 le32_to_cpu(mpi_reply->IOCLogInfo)));
3338         } else {
3339                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3340                     ioc->name, __FILE__, __LINE__, __func__);
3341         }
3342         return mpt3sas_check_for_pending_internal_cmds(ioc, smid);
3343 }
3344
3345 /**
3346  * _scsih_tm_tr_volume_send - send target reset request for volumes
3347  * @ioc: per adapter object
3348  * @handle: device handle
3349  * Context: interrupt time.
3350  *
3351  * This is designed to send muliple task management request at the same
3352  * time to the fifo. If the fifo is full, we will append the request,
3353  * and process it in a future completion.
3354  */
3355 static void
3356 _scsih_tm_tr_volume_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3357 {
3358         Mpi2SCSITaskManagementRequest_t *mpi_request;
3359         u16 smid;
3360         struct _tr_list *delayed_tr;
3361
3362         if (ioc->shost_recovery || ioc->remove_host ||
3363             ioc->pci_error_recovery) {
3364                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3365                         "%s: host reset in progress!\n",
3366                         __func__, ioc->name));
3367                 return;
3368         }
3369
3370         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_volume_cb_idx);
3371         if (!smid) {
3372                 delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3373                 if (!delayed_tr)
3374                         return;
3375                 INIT_LIST_HEAD(&delayed_tr->list);
3376                 delayed_tr->handle = handle;
3377                 list_add_tail(&delayed_tr->list, &ioc->delayed_tr_volume_list);
3378                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3379                     "DELAYED:tr:handle(0x%04x), (open)\n",
3380                     ioc->name, handle));
3381                 return;
3382         }
3383
3384         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3385                 "tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3386                 ioc->name, handle, smid,
3387             ioc->tm_tr_volume_cb_idx));
3388         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3389         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3390         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3391         mpi_request->DevHandle = cpu_to_le16(handle);
3392         mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3393         mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
3394 }
3395
3396 /**
3397  * _scsih_tm_volume_tr_complete - target reset completion
3398  * @ioc: per adapter object
3399  * @smid: system request message index
3400  * @msix_index: MSIX table index supplied by the OS
3401  * @reply: reply message frame(lower 32bit addr)
3402  * Context: interrupt time.
3403  *
3404  * Return 1 meaning mf should be freed from _base_interrupt
3405  *        0 means the mf is freed from this function.
3406  */
3407 static u8
3408 _scsih_tm_volume_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3409         u8 msix_index, u32 reply)
3410 {
3411         u16 handle;
3412         Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3413         Mpi2SCSITaskManagementReply_t *mpi_reply =
3414             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3415
3416         if (ioc->shost_recovery || ioc->remove_host ||
3417             ioc->pci_error_recovery) {
3418                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3419                         "%s: host reset in progress!\n",
3420                         __func__, ioc->name));
3421                 return 1;
3422         }
3423         if (unlikely(!mpi_reply)) {
3424                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3425                     ioc->name, __FILE__, __LINE__, __func__);
3426                 return 1;
3427         }
3428
3429         mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3430         handle = le16_to_cpu(mpi_request_tm->DevHandle);
3431         if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3432                 dewtprintk(ioc, pr_err(MPT3SAS_FMT
3433                         "spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3434                         ioc->name, handle,
3435                     le16_to_cpu(mpi_reply->DevHandle), smid));
3436                 return 0;
3437         }
3438
3439         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3440             "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3441             "loginfo(0x%08x), completed(%d)\n", ioc->name,
3442             handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3443             le32_to_cpu(mpi_reply->IOCLogInfo),
3444             le32_to_cpu(mpi_reply->TerminationCount)));
3445
3446         return _scsih_check_for_pending_tm(ioc, smid);
3447 }
3448
3449 /**
3450  * _scsih_issue_delayed_event_ack - issue delayed Event ACK messages
3451  * @ioc: per adapter object
3452  * @smid: system request message index
3453  * @event: Event ID
3454  * @event_context: used to track events uniquely
3455  *
3456  * Context - processed in interrupt context.
3457  */
3458 void
3459 _scsih_issue_delayed_event_ack(struct MPT3SAS_ADAPTER *ioc, u16 smid, u16 event,
3460                                 u32 event_context)
3461 {
3462         Mpi2EventAckRequest_t *ack_request;
3463         int i = smid - ioc->internal_smid;
3464         unsigned long flags;
3465
3466         /* Without releasing the smid just update the
3467          * call back index and reuse the same smid for
3468          * processing this delayed request
3469          */
3470         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3471         ioc->internal_lookup[i].cb_idx = ioc->base_cb_idx;
3472         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3473
3474         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3475                 "EVENT ACK: event(0x%04x), smid(%d), cb(%d)\n",
3476                 ioc->name, le16_to_cpu(event), smid,
3477                 ioc->base_cb_idx));
3478         ack_request = mpt3sas_base_get_msg_frame(ioc, smid);
3479         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
3480         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
3481         ack_request->Event = event;
3482         ack_request->EventContext = event_context;
3483         ack_request->VF_ID = 0;  /* TODO */
3484         ack_request->VP_ID = 0;
3485         mpt3sas_base_put_smid_default(ioc, smid);
3486 }
3487
3488 /**
3489  * _scsih_issue_delayed_sas_io_unit_ctrl - issue delayed
3490  *                              sas_io_unit_ctrl messages
3491  * @ioc: per adapter object
3492  * @smid: system request message index
3493  * @handle: device handle
3494  *
3495  * Context - processed in interrupt context.
3496  */
3497 void
3498 _scsih_issue_delayed_sas_io_unit_ctrl(struct MPT3SAS_ADAPTER *ioc,
3499                                         u16 smid, u16 handle)
3500         {
3501                 Mpi2SasIoUnitControlRequest_t *mpi_request;
3502                 u32 ioc_state;
3503                 int i = smid - ioc->internal_smid;
3504                 unsigned long flags;
3505
3506                 if (ioc->remove_host) {
3507                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3508                             "%s: host has been removed\n",
3509                              __func__, ioc->name));
3510                         return;
3511                 } else if (ioc->pci_error_recovery) {
3512                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3513                             "%s: host in pci error recovery\n",
3514                             __func__, ioc->name));
3515                 return;
3516         }
3517         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3518         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3519                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3520                     "%s: host is not operational\n",
3521                     __func__, ioc->name));
3522                 return;
3523         }
3524
3525         /* Without releasing the smid just update the
3526          * call back index and reuse the same smid for
3527          * processing this delayed request
3528          */
3529         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3530         ioc->internal_lookup[i].cb_idx = ioc->tm_sas_control_cb_idx;
3531         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3532
3533         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3534             "sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3535             ioc->name, le16_to_cpu(handle), smid,
3536             ioc->tm_sas_control_cb_idx));
3537         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3538         memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3539         mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3540         mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3541         mpi_request->DevHandle = handle;
3542         mpt3sas_base_put_smid_default(ioc, smid);
3543 }
3544
3545 /**
3546  * _scsih_check_for_pending_internal_cmds - check for pending internal messages
3547  * @ioc: per adapter object
3548  * @smid: system request message index
3549  *
3550  * Context: Executed in interrupt context
3551  *
3552  * This will check delayed internal messages list, and process the
3553  * next request.
3554  *
3555  * Return 1 meaning mf should be freed from _base_interrupt
3556  *        0 means the mf is freed from this function.
3557  */
3558 u8
3559 mpt3sas_check_for_pending_internal_cmds(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3560 {
3561         struct _sc_list *delayed_sc;
3562         struct _event_ack_list *delayed_event_ack;
3563
3564         if (!list_empty(&ioc->delayed_event_ack_list)) {
3565                 delayed_event_ack = list_entry(ioc->delayed_event_ack_list.next,
3566                                                 struct _event_ack_list, list);
3567                 _scsih_issue_delayed_event_ack(ioc, smid,
3568                   delayed_event_ack->Event, delayed_event_ack->EventContext);
3569                 list_del(&delayed_event_ack->list);
3570                 kfree(delayed_event_ack);
3571                 return 0;
3572         }
3573
3574         if (!list_empty(&ioc->delayed_sc_list)) {
3575                 delayed_sc = list_entry(ioc->delayed_sc_list.next,
3576                                                 struct _sc_list, list);
3577                 _scsih_issue_delayed_sas_io_unit_ctrl(ioc, smid,
3578                                                  delayed_sc->handle);
3579                 list_del(&delayed_sc->list);
3580                 kfree(delayed_sc);
3581                 return 0;
3582         }
3583         return 1;
3584 }
3585
3586 /**
3587  * _scsih_check_for_pending_tm - check for pending task management
3588  * @ioc: per adapter object
3589  * @smid: system request message index
3590  *
3591  * This will check delayed target reset list, and feed the
3592  * next reqeust.
3593  *
3594  * Return 1 meaning mf should be freed from _base_interrupt
3595  *        0 means the mf is freed from this function.
3596  */
3597 static u8
3598 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3599 {
3600         struct _tr_list *delayed_tr;
3601
3602         if (!list_empty(&ioc->delayed_tr_volume_list)) {
3603                 delayed_tr = list_entry(ioc->delayed_tr_volume_list.next,
3604                     struct _tr_list, list);
3605                 mpt3sas_base_free_smid(ioc, smid);
3606                 _scsih_tm_tr_volume_send(ioc, delayed_tr->handle);
3607                 list_del(&delayed_tr->list);
3608                 kfree(delayed_tr);
3609                 return 0;
3610         }
3611
3612         if (!list_empty(&ioc->delayed_tr_list)) {
3613                 delayed_tr = list_entry(ioc->delayed_tr_list.next,
3614                     struct _tr_list, list);
3615                 mpt3sas_base_free_smid(ioc, smid);
3616                 _scsih_tm_tr_send(ioc, delayed_tr->handle);
3617                 list_del(&delayed_tr->list);
3618                 kfree(delayed_tr);
3619                 return 0;
3620         }
3621
3622         return 1;
3623 }
3624
3625 /**
3626  * _scsih_check_topo_delete_events - sanity check on topo events
3627  * @ioc: per adapter object
3628  * @event_data: the event data payload
3629  *
3630  * This routine added to better handle cable breaker.
3631  *
3632  * This handles the case where driver receives multiple expander
3633  * add and delete events in a single shot.  When there is a delete event
3634  * the routine will void any pending add events waiting in the event queue.
3635  *
3636  * Return nothing.
3637  */
3638 static void
3639 _scsih_check_topo_delete_events(struct MPT3SAS_ADAPTER *ioc,
3640         Mpi2EventDataSasTopologyChangeList_t *event_data)
3641 {
3642         struct fw_event_work *fw_event;
3643         Mpi2EventDataSasTopologyChangeList_t *local_event_data;
3644         u16 expander_handle;
3645         struct _sas_node *sas_expander;
3646         unsigned long flags;
3647         int i, reason_code;
3648         u16 handle;
3649
3650         for (i = 0 ; i < event_data->NumEntries; i++) {
3651                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3652                 if (!handle)
3653                         continue;
3654                 reason_code = event_data->PHY[i].PhyStatus &
3655                     MPI2_EVENT_SAS_TOPO_RC_MASK;
3656                 if (reason_code == MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING)
3657                         _scsih_tm_tr_send(ioc, handle);
3658         }
3659
3660         expander_handle = le16_to_cpu(event_data->ExpanderDevHandle);
3661         if (expander_handle < ioc->sas_hba.num_phys) {
3662                 _scsih_block_io_to_children_attached_directly(ioc, event_data);
3663                 return;
3664         }
3665         if (event_data->ExpStatus ==
3666             MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING) {
3667                 /* put expander attached devices into blocking state */
3668                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
3669                 sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
3670                     expander_handle);
3671                 _scsih_block_io_to_children_attached_to_ex(ioc, sas_expander);
3672                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
3673                 do {
3674                         handle = find_first_bit(ioc->blocking_handles,
3675                             ioc->facts.MaxDevHandle);
3676                         if (handle < ioc->facts.MaxDevHandle)
3677                                 _scsih_block_io_device(ioc, handle);
3678                 } while (test_and_clear_bit(handle, ioc->blocking_handles));
3679         } else if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_RESPONDING)
3680                 _scsih_block_io_to_children_attached_directly(ioc, event_data);
3681
3682         if (event_data->ExpStatus != MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING)
3683                 return;
3684
3685         /* mark ignore flag for pending events */
3686         spin_lock_irqsave(&ioc->fw_event_lock, flags);
3687         list_for_each_entry(fw_event, &ioc->fw_event_list, list) {
3688                 if (fw_event->event != MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST ||
3689                     fw_event->ignore)
3690                         continue;
3691                 local_event_data = (Mpi2EventDataSasTopologyChangeList_t *)
3692                                    fw_event->event_data;
3693                 if (local_event_data->ExpStatus ==
3694                     MPI2_EVENT_SAS_TOPO_ES_ADDED ||
3695                     local_event_data->ExpStatus ==
3696                     MPI2_EVENT_SAS_TOPO_ES_RESPONDING) {
3697                         if (le16_to_cpu(local_event_data->ExpanderDevHandle) ==
3698                             expander_handle) {
3699                                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3700                                     "setting ignoring flag\n", ioc->name));
3701                                 fw_event->ignore = 1;
3702                         }
3703                 }
3704         }
3705         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
3706 }
3707
3708 /**
3709  * _scsih_set_volume_delete_flag - setting volume delete flag
3710  * @ioc: per adapter object
3711  * @handle: device handle
3712  *
3713  * This returns nothing.
3714  */
3715 static void
3716 _scsih_set_volume_delete_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3717 {
3718         struct _raid_device *raid_device;
3719         struct MPT3SAS_TARGET *sas_target_priv_data;
3720         unsigned long flags;
3721
3722         spin_lock_irqsave(&ioc->raid_device_lock, flags);
3723         raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
3724         if (raid_device && raid_device->starget &&
3725             raid_device->starget->hostdata) {
3726                 sas_target_priv_data =
3727                     raid_device->starget->hostdata;
3728                 sas_target_priv_data->deleted = 1;
3729                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3730                     "setting delete flag: handle(0x%04x), "
3731                     "wwid(0x%016llx)\n", ioc->name, handle,
3732                     (unsigned long long) raid_device->wwid));
3733         }
3734         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
3735 }
3736
3737 /**
3738  * _scsih_set_volume_handle_for_tr - set handle for target reset to volume
3739  * @handle: input handle
3740  * @a: handle for volume a
3741  * @b: handle for volume b
3742  *
3743  * IR firmware only supports two raid volumes.  The purpose of this
3744  * routine is to set the volume handle in either a or b. When the given
3745  * input handle is non-zero, or when a and b have not been set before.
3746  */
3747 static void
3748 _scsih_set_volume_handle_for_tr(u16 handle, u16 *a, u16 *b)
3749 {
3750         if (!handle || handle == *a || handle == *b)
3751                 return;
3752         if (!*a)
3753                 *a = handle;
3754         else if (!*b)
3755                 *b = handle;
3756 }
3757
3758 /**
3759  * _scsih_check_ir_config_unhide_events - check for UNHIDE events
3760  * @ioc: per adapter object
3761  * @event_data: the event data payload
3762  * Context: interrupt time.
3763  *
3764  * This routine will send target reset to volume, followed by target
3765  * resets to the PDs. This is called when a PD has been removed, or
3766  * volume has been deleted or removed. When the target reset is sent
3767  * to volume, the PD target resets need to be queued to start upon
3768  * completion of the volume target reset.
3769  *
3770  * Return nothing.
3771  */
3772 static void
3773 _scsih_check_ir_config_unhide_events(struct MPT3SAS_ADAPTER *ioc,
3774         Mpi2EventDataIrConfigChangeList_t *event_data)
3775 {
3776         Mpi2EventIrConfigElement_t *element;
3777         int i;
3778         u16 handle, volume_handle, a, b;
3779         struct _tr_list *delayed_tr;
3780
3781         a = 0;
3782         b = 0;
3783
3784         if (ioc->is_warpdrive)
3785                 return;
3786
3787         /* Volume Resets for Deleted or Removed */
3788         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3789         for (i = 0; i < event_data->NumElements; i++, element++) {
3790                 if (le32_to_cpu(event_data->Flags) &
3791                     MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3792                         continue;
3793                 if (element->ReasonCode ==
3794                     MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED ||
3795                     element->ReasonCode ==
3796                     MPI2_EVENT_IR_CHANGE_RC_REMOVED) {
3797                         volume_handle = le16_to_cpu(element->VolDevHandle);
3798                         _scsih_set_volume_delete_flag(ioc, volume_handle);
3799                         _scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3800                 }
3801         }
3802
3803         /* Volume Resets for UNHIDE events */
3804         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3805         for (i = 0; i < event_data->NumElements; i++, element++) {
3806                 if (le32_to_cpu(event_data->Flags) &
3807                     MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3808                         continue;
3809                 if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_UNHIDE) {
3810                         volume_handle = le16_to_cpu(element->VolDevHandle);
3811                         _scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3812                 }
3813         }
3814
3815         if (a)
3816                 _scsih_tm_tr_volume_send(ioc, a);
3817         if (b)
3818                 _scsih_tm_tr_volume_send(ioc, b);
3819
3820         /* PD target resets */
3821         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3822         for (i = 0; i < event_data->NumElements; i++, element++) {
3823                 if (element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_UNHIDE)
3824                         continue;
3825                 handle = le16_to_cpu(element->PhysDiskDevHandle);
3826                 volume_handle = le16_to_cpu(element->VolDevHandle);
3827                 clear_bit(handle, ioc->pd_handles);
3828                 if (!volume_handle)
3829                         _scsih_tm_tr_send(ioc, handle);
3830                 else if (volume_handle == a || volume_handle == b) {
3831                         delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3832                         BUG_ON(!delayed_tr);
3833                         INIT_LIST_HEAD(&delayed_tr->list);
3834                         delayed_tr->handle = handle;
3835                         list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3836                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3837                             "DELAYED:tr:handle(0x%04x), (open)\n", ioc->name,
3838                             handle));
3839                 } else
3840                         _scsih_tm_tr_send(ioc, handle);
3841         }
3842 }
3843
3844
3845 /**
3846  * _scsih_check_volume_delete_events - set delete flag for volumes
3847  * @ioc: per adapter object
3848  * @event_data: the event data payload
3849  * Context: interrupt time.
3850  *
3851  * This will handle the case when the cable connected to entire volume is
3852  * pulled. We will take care of setting the deleted flag so normal IO will
3853  * not be sent.
3854  *
3855  * Return nothing.
3856  */
3857 static void
3858 _scsih_check_volume_delete_events(struct MPT3SAS_ADAPTER *ioc,
3859         Mpi2EventDataIrVolume_t *event_data)
3860 {
3861         u32 state;
3862
3863         if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
3864                 return;
3865         state = le32_to_cpu(event_data->NewValue);
3866         if (state == MPI2_RAID_VOL_STATE_MISSING || state ==
3867             MPI2_RAID_VOL_STATE_FAILED)
3868                 _scsih_set_volume_delete_flag(ioc,
3869                     le16_to_cpu(event_data->VolDevHandle));
3870 }
3871
3872 /**
3873  * _scsih_temp_threshold_events - display temperature threshold exceeded events
3874  * @ioc: per adapter object
3875  * @event_data: the temp threshold event data
3876  * Context: interrupt time.
3877  *
3878  * Return nothing.
3879  */
3880 static void
3881 _scsih_temp_threshold_events(struct MPT3SAS_ADAPTER *ioc,
3882         Mpi2EventDataTemperature_t *event_data)
3883 {
3884         if (ioc->temp_sensors_count >= event_data->SensorNum) {
3885                 pr_err(MPT3SAS_FMT "Temperature Threshold flags %s%s%s%s"
3886                   " exceeded for Sensor: %d !!!\n", ioc->name,
3887                   ((le16_to_cpu(event_data->Status) & 0x1) == 1) ? "0 " : " ",
3888                   ((le16_to_cpu(event_data->Status) & 0x2) == 2) ? "1 " : " ",
3889                   ((le16_to_cpu(event_data->Status) & 0x4) == 4) ? "2 " : " ",
3890                   ((le16_to_cpu(event_data->Status) & 0x8) == 8) ? "3 " : " ",
3891                   event_data->SensorNum);
3892                 pr_err(MPT3SAS_FMT "Current Temp In Celsius: %d\n",
3893                         ioc->name, event_data->CurrentTemperature);
3894         }
3895 }
3896
3897 /**
3898  * _scsih_flush_running_cmds - completing outstanding commands.
3899  * @ioc: per adapter object
3900  *
3901  * The flushing out of all pending scmd commands following host reset,
3902  * where all IO is dropped to the floor.
3903  *
3904  * Return nothing.
3905  */
3906 static void
3907 _scsih_flush_running_cmds(struct MPT3SAS_ADAPTER *ioc)
3908 {
3909         struct scsi_cmnd *scmd;
3910         u16 smid;
3911         u16 count = 0;
3912
3913         for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
3914                 scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
3915                 if (!scmd)
3916                         continue;
3917                 count++;
3918                 mpt3sas_base_free_smid(ioc, smid);
3919                 scsi_dma_unmap(scmd);
3920                 if (ioc->pci_error_recovery)
3921                         scmd->result = DID_NO_CONNECT << 16;
3922                 else
3923                         scmd->result = DID_RESET << 16;
3924                 scmd->scsi_done(scmd);
3925         }
3926         dtmprintk(ioc, pr_info(MPT3SAS_FMT "completing %d cmds\n",
3927             ioc->name, count));
3928 }
3929
3930 /**
3931  * _scsih_setup_eedp - setup MPI request for EEDP transfer
3932  * @ioc: per adapter object
3933  * @scmd: pointer to scsi command object
3934  * @mpi_request: pointer to the SCSI_IO reqest message frame
3935  *
3936  * Supporting protection 1 and 3.
3937  *
3938  * Returns nothing
3939  */
3940 static void
3941 _scsih_setup_eedp(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
3942         Mpi2SCSIIORequest_t *mpi_request)
3943 {
3944         u16 eedp_flags;
3945         unsigned char prot_op = scsi_get_prot_op(scmd);
3946         unsigned char prot_type = scsi_get_prot_type(scmd);
3947         Mpi25SCSIIORequest_t *mpi_request_3v =
3948            (Mpi25SCSIIORequest_t *)mpi_request;
3949
3950         if (prot_type == SCSI_PROT_DIF_TYPE0 || prot_op == SCSI_PROT_NORMAL)
3951                 return;
3952
3953         if (prot_op ==  SCSI_PROT_READ_STRIP)
3954                 eedp_flags = MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP;
3955         else if (prot_op ==  SCSI_PROT_WRITE_INSERT)
3956                 eedp_flags = MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
3957         else
3958                 return;
3959
3960         switch (prot_type) {
3961         case SCSI_PROT_DIF_TYPE1:
3962         case SCSI_PROT_DIF_TYPE2:
3963
3964                 /*
3965                 * enable ref/guard checking
3966                 * auto increment ref tag
3967                 */
3968                 eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
3969                     MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
3970                     MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
3971                 mpi_request->CDB.EEDP32.PrimaryReferenceTag =
3972                     cpu_to_be32(scsi_prot_ref_tag(scmd));
3973                 break;
3974
3975         case SCSI_PROT_DIF_TYPE3:
3976
3977                 /*
3978                 * enable guard checking
3979                 */
3980                 eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
3981
3982                 break;
3983         }
3984
3985         mpi_request_3v->EEDPBlockSize =
3986             cpu_to_le16(scmd->device->sector_size);
3987         mpi_request->EEDPFlags = cpu_to_le16(eedp_flags);
3988 }
3989
3990 /**
3991  * _scsih_eedp_error_handling - return sense code for EEDP errors
3992  * @scmd: pointer to scsi command object
3993  * @ioc_status: ioc status
3994  *
3995  * Returns nothing
3996  */
3997 static void
3998 _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
3999 {
4000         u8 ascq;
4001
4002         switch (ioc_status) {
4003         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4004                 ascq = 0x01;
4005                 break;
4006         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4007                 ascq = 0x02;
4008                 break;
4009         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4010                 ascq = 0x03;
4011                 break;
4012         default:
4013                 ascq = 0x00;
4014                 break;
4015         }
4016         scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x10,
4017             ascq);
4018         scmd->result = DRIVER_SENSE << 24 | (DID_ABORT << 16) |
4019             SAM_STAT_CHECK_CONDITION;
4020 }
4021
4022
4023
4024 /**
4025  * scsih_qcmd - main scsi request entry point
4026  * @scmd: pointer to scsi command object
4027  * @done: function pointer to be invoked on completion
4028  *
4029  * The callback index is set inside `ioc->scsi_io_cb_idx`.
4030  *
4031  * Returns 0 on success.  If there's a failure, return either:
4032  * SCSI_MLQUEUE_DEVICE_BUSY if the device queue is full, or
4033  * SCSI_MLQUEUE_HOST_BUSY if the entire host queue is full
4034  */
4035 int
4036 scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
4037 {
4038         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
4039         struct MPT3SAS_DEVICE *sas_device_priv_data;
4040         struct MPT3SAS_TARGET *sas_target_priv_data;
4041         struct _raid_device *raid_device;
4042         Mpi2SCSIIORequest_t *mpi_request;
4043         u32 mpi_control;
4044         u16 smid;
4045         u16 handle;
4046
4047         if (ioc->logging_level & MPT_DEBUG_SCSI)
4048                 scsi_print_command(scmd);
4049
4050         sas_device_priv_data = scmd->device->hostdata;
4051         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
4052                 scmd->result = DID_NO_CONNECT << 16;
4053                 scmd->scsi_done(scmd);
4054                 return 0;
4055         }
4056
4057         if (ioc->pci_error_recovery || ioc->remove_host) {
4058                 scmd->result = DID_NO_CONNECT << 16;
4059                 scmd->scsi_done(scmd);
4060                 return 0;
4061         }
4062
4063         sas_target_priv_data = sas_device_priv_data->sas_target;
4064
4065         /* invalid device handle */
4066         handle = sas_target_priv_data->handle;
4067         if (handle == MPT3SAS_INVALID_DEVICE_HANDLE) {
4068                 scmd->result = DID_NO_CONNECT << 16;
4069                 scmd->scsi_done(scmd);
4070                 return 0;
4071         }
4072
4073
4074         /* host recovery or link resets sent via IOCTLs */
4075         if (ioc->shost_recovery || ioc->ioc_link_reset_in_progress)
4076                 return SCSI_MLQUEUE_HOST_BUSY;
4077
4078         /* device has been deleted */
4079         else if (sas_target_priv_data->deleted) {
4080                 scmd->result = DID_NO_CONNECT << 16;
4081                 scmd->scsi_done(scmd);
4082                 return 0;
4083         /* device busy with task managment */
4084         } else if (sas_target_priv_data->tm_busy ||
4085             sas_device_priv_data->block)
4086                 return SCSI_MLQUEUE_DEVICE_BUSY;
4087
4088         if (scmd->sc_data_direction == DMA_FROM_DEVICE)
4089                 mpi_control = MPI2_SCSIIO_CONTROL_READ;
4090         else if (scmd->sc_data_direction == DMA_TO_DEVICE)
4091                 mpi_control = MPI2_SCSIIO_CONTROL_WRITE;
4092         else
4093                 mpi_control = MPI2_SCSIIO_CONTROL_NODATATRANSFER;
4094
4095         /* set tags */
4096         mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
4097
4098         /* Make sure Device is not raid volume.
4099          * We do not expose raid functionality to upper layer for warpdrive.
4100          */
4101         if (!ioc->is_warpdrive && !scsih_is_raid(&scmd->device->sdev_gendev)
4102             && sas_is_tlr_enabled(scmd->device) && scmd->cmd_len != 32)
4103                 mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
4104
4105         smid = mpt3sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);
4106         if (!smid) {
4107                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4108                     ioc->name, __func__);
4109                 goto out;
4110         }
4111         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4112         memset(mpi_request, 0, sizeof(Mpi2SCSIIORequest_t));
4113         _scsih_setup_eedp(ioc, scmd, mpi_request);
4114
4115         if (scmd->cmd_len == 32)
4116                 mpi_control |= 4 << MPI2_SCSIIO_CONTROL_ADDCDBLEN_SHIFT;
4117         mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4118         if (sas_device_priv_data->sas_target->flags &
4119             MPT_TARGET_FLAGS_RAID_COMPONENT)
4120                 mpi_request->Function = MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
4121         else
4122                 mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4123         mpi_request->DevHandle = cpu_to_le16(handle);
4124         mpi_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
4125         mpi_request->Control = cpu_to_le32(mpi_control);
4126         mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len);
4127         mpi_request->MsgFlags = MPI2_SCSIIO_MSGFLAGS_SYSTEM_SENSE_ADDR;
4128         mpi_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
4129         mpi_request->SenseBufferLowAddress =
4130             mpt3sas_base_get_sense_buffer_dma(ioc, smid);
4131         mpi_request->SGLOffset0 = offsetof(Mpi2SCSIIORequest_t, SGL) / 4;
4132         int_to_scsilun(sas_device_priv_data->lun, (struct scsi_lun *)
4133             mpi_request->LUN);
4134         memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4135
4136         if (mpi_request->DataLength) {
4137                 if (ioc->build_sg_scmd(ioc, scmd, smid)) {
4138                         mpt3sas_base_free_smid(ioc, smid);
4139                         goto out;
4140                 }
4141         } else
4142                 ioc->build_zero_len_sge(ioc, &mpi_request->SGL);
4143
4144         raid_device = sas_target_priv_data->raid_device;
4145         if (raid_device && raid_device->direct_io_enabled)
4146                 mpt3sas_setup_direct_io(ioc, scmd, raid_device, mpi_request,
4147                     smid);
4148
4149         if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)) {
4150                 if (sas_target_priv_data->flags & MPT_TARGET_FASTPATH_IO) {
4151                         mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len |
4152                             MPI25_SCSIIO_IOFLAGS_FAST_PATH);
4153                         mpt3sas_base_put_smid_fast_path(ioc, smid, handle);
4154                 } else
4155                         mpt3sas_base_put_smid_scsi_io(ioc, smid,
4156                             le16_to_cpu(mpi_request->DevHandle));
4157         } else
4158                 mpt3sas_base_put_smid_default(ioc, smid);
4159         return 0;
4160
4161  out:
4162         return SCSI_MLQUEUE_HOST_BUSY;
4163 }
4164
4165 /**
4166  * _scsih_normalize_sense - normalize descriptor and fixed format sense data
4167  * @sense_buffer: sense data returned by target
4168  * @data: normalized skey/asc/ascq
4169  *
4170  * Return nothing.
4171  */
4172 static void
4173 _scsih_normalize_sense(char *sense_buffer, struct sense_info *data)
4174 {
4175         if ((sense_buffer[0] & 0x7F) >= 0x72) {
4176                 /* descriptor format */
4177                 data->skey = sense_buffer[1] & 0x0F;
4178                 data->asc = sense_buffer[2];
4179                 data->ascq = sense_buffer[3];
4180         } else {
4181                 /* fixed format */
4182                 data->skey = sense_buffer[2] & 0x0F;
4183                 data->asc = sense_buffer[12];
4184                 data->ascq = sense_buffer[13];
4185         }
4186 }
4187
4188 /**
4189  * _scsih_scsi_ioc_info - translated non-succesfull SCSI_IO request
4190  * @ioc: per adapter object
4191  * @scmd: pointer to scsi command object
4192  * @mpi_reply: reply mf payload returned from firmware
4193  *
4194  * scsi_status - SCSI Status code returned from target device
4195  * scsi_state - state info associated with SCSI_IO determined by ioc
4196  * ioc_status - ioc supplied status info
4197  *
4198  * Return nothing.
4199  */
4200 static void
4201 _scsih_scsi_ioc_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
4202         Mpi2SCSIIOReply_t *mpi_reply, u16 smid)
4203 {
4204         u32 response_info;
4205         u8 *response_bytes;
4206         u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
4207             MPI2_IOCSTATUS_MASK;
4208         u8 scsi_state = mpi_reply->SCSIState;
4209         u8 scsi_status = mpi_reply->SCSIStatus;
4210         char *desc_ioc_state = NULL;
4211         char *desc_scsi_status = NULL;
4212         char *desc_scsi_state = ioc->tmp_string;
4213         u32 log_info = le32_to_cpu(mpi_reply->IOCLogInfo);
4214         struct _sas_device *sas_device = NULL;
4215         struct scsi_target *starget = scmd->device->sdev_target;
4216         struct MPT3SAS_TARGET *priv_target = starget->hostdata;
4217         char *device_str = NULL;
4218
4219         if (!priv_target)
4220                 return;
4221         if (ioc->hide_ir_msg)
4222                 device_str = "WarpDrive";
4223         else
4224                 device_str = "volume";
4225
4226         if (log_info == 0x31170000)
4227                 return;
4228
4229         switch (ioc_status) {
4230         case MPI2_IOCSTATUS_SUCCESS:
4231                 desc_ioc_state = "success";
4232                 break;
4233         case MPI2_IOCSTATUS_INVALID_FUNCTION:
4234                 desc_ioc_state = "invalid function";
4235                 break;
4236         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4237                 desc_ioc_state = "scsi recovered error";
4238                 break;
4239         case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
4240                 desc_ioc_state = "scsi invalid dev handle";
4241                 break;
4242         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4243                 desc_ioc_state = "scsi device not there";
4244                 break;
4245         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4246                 desc_ioc_state = "scsi data overrun";
4247                 break;
4248         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4249                 desc_ioc_state = "scsi data underrun";
4250                 break;
4251         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4252                 desc_ioc_state = "scsi io data error";
4253                 break;
4254         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4255                 desc_ioc_state = "scsi protocol error";
4256                 break;
4257         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4258                 desc_ioc_state = "scsi task terminated";
4259                 break;
4260         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4261                 desc_ioc_state = "scsi residual mismatch";
4262                 break;
4263         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4264                 desc_ioc_state = "scsi task mgmt failed";
4265                 break;
4266         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4267                 desc_ioc_state = "scsi ioc terminated";
4268                 break;
4269         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4270                 desc_ioc_state = "scsi ext terminated";
4271                 break;
4272         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4273                 desc_ioc_state = "eedp guard error";
4274                 break;
4275         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4276                 desc_ioc_state = "eedp ref tag error";
4277                 break;
4278         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4279                 desc_ioc_state = "eedp app tag error";
4280                 break;
4281         case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4282                 desc_ioc_state = "insufficient power";
4283                 break;
4284         default:
4285                 desc_ioc_state = "unknown";
4286                 break;
4287         }
4288
4289         switch (scsi_status) {
4290         case MPI2_SCSI_STATUS_GOOD:
4291                 desc_scsi_status = "good";
4292                 break;
4293         case MPI2_SCSI_STATUS_CHECK_CONDITION:
4294                 desc_scsi_status = "check condition";
4295                 break;
4296         case MPI2_SCSI_STATUS_CONDITION_MET:
4297                 desc_scsi_status = "condition met";
4298                 break;
4299         case MPI2_SCSI_STATUS_BUSY:
4300                 desc_scsi_status = "busy";
4301                 break;
4302         case MPI2_SCSI_STATUS_INTERMEDIATE:
4303                 desc_scsi_status = "intermediate";
4304                 break;
4305         case MPI2_SCSI_STATUS_INTERMEDIATE_CONDMET:
4306                 desc_scsi_status = "intermediate condmet";
4307                 break;
4308         case MPI2_SCSI_STATUS_RESERVATION_CONFLICT:
4309                 desc_scsi_status = "reservation conflict";
4310                 break;
4311         case MPI2_SCSI_STATUS_COMMAND_TERMINATED:
4312                 desc_scsi_status = "command terminated";
4313                 break;
4314         case MPI2_SCSI_STATUS_TASK_SET_FULL:
4315                 desc_scsi_status = "task set full";
4316                 break;
4317         case MPI2_SCSI_STATUS_ACA_ACTIVE:
4318                 desc_scsi_status = "aca active";
4319                 break;
4320         case MPI2_SCSI_STATUS_TASK_ABORTED:
4321                 desc_scsi_status = "task aborted";
4322                 break;
4323         default:
4324                 desc_scsi_status = "unknown";
4325                 break;
4326         }
4327
4328         desc_scsi_state[0] = '\0';
4329         if (!scsi_state)
4330                 desc_scsi_state = " ";
4331         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4332                 strcat(desc_scsi_state, "response info ");
4333         if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4334                 strcat(desc_scsi_state, "state terminated ");
4335         if (scsi_state & MPI2_SCSI_STATE_NO_SCSI_STATUS)
4336                 strcat(desc_scsi_state, "no status ");
4337         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_FAILED)
4338                 strcat(desc_scsi_state, "autosense failed ");
4339         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID)
4340                 strcat(desc_scsi_state, "autosense valid ");
4341
4342         scsi_print_command(scmd);
4343
4344         if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
4345                 pr_warn(MPT3SAS_FMT "\t%s wwid(0x%016llx)\n", ioc->name,
4346                     device_str, (unsigned long long)priv_target->sas_address);
4347         } else {
4348                 sas_device = mpt3sas_get_sdev_from_target(ioc, priv_target);
4349                 if (sas_device) {
4350                         pr_warn(MPT3SAS_FMT
4351                                 "\tsas_address(0x%016llx), phy(%d)\n",
4352                                 ioc->name, (unsigned long long)
4353                             sas_device->sas_address, sas_device->phy);
4354                         if (sas_device->enclosure_handle != 0)
4355                                 pr_warn(MPT3SAS_FMT
4356                                   "\tenclosure_logical_id(0x%016llx),"
4357                                   "slot(%d)\n", ioc->name,
4358                                   (unsigned long long)
4359                                   sas_device->enclosure_logical_id,
4360                                   sas_device->slot);
4361                         if (sas_device->connector_name[0])
4362                                 pr_warn(MPT3SAS_FMT
4363                                   "\tenclosure level(0x%04x),"
4364                                   " connector name( %s)\n", ioc->name,
4365                                   sas_device->enclosure_level,
4366                                   sas_device->connector_name);
4367
4368                         sas_device_put(sas_device);
4369                 }
4370         }
4371
4372         pr_warn(MPT3SAS_FMT
4373                 "\thandle(0x%04x), ioc_status(%s)(0x%04x), smid(%d)\n",
4374                 ioc->name, le16_to_cpu(mpi_reply->DevHandle),
4375             desc_ioc_state, ioc_status, smid);
4376         pr_warn(MPT3SAS_FMT
4377                 "\trequest_len(%d), underflow(%d), resid(%d)\n",
4378                 ioc->name, scsi_bufflen(scmd), scmd->underflow,
4379             scsi_get_resid(scmd));
4380         pr_warn(MPT3SAS_FMT
4381                 "\ttag(%d), transfer_count(%d), sc->result(0x%08x)\n",
4382                 ioc->name, le16_to_cpu(mpi_reply->TaskTag),
4383             le32_to_cpu(mpi_reply->TransferCount), scmd->result);
4384         pr_warn(MPT3SAS_FMT
4385                 "\tscsi_status(%s)(0x%02x), scsi_state(%s)(0x%02x)\n",
4386                 ioc->name, desc_scsi_status,
4387             scsi_status, desc_scsi_state, scsi_state);
4388
4389         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4390                 struct sense_info data;
4391                 _scsih_normalize_sense(scmd->sense_buffer, &data);
4392                 pr_warn(MPT3SAS_FMT
4393                         "\t[sense_key,asc,ascq]: [0x%02x,0x%02x,0x%02x], count(%d)\n",
4394                         ioc->name, data.skey,
4395                     data.asc, data.ascq, le32_to_cpu(mpi_reply->SenseCount));
4396         }
4397
4398         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID) {
4399                 response_info = le32_to_cpu(mpi_reply->ResponseInfo);
4400                 response_bytes = (u8 *)&response_info;
4401                 _scsih_response_code(ioc, response_bytes[0]);
4402         }
4403 }
4404
4405 /**
4406  * _scsih_turn_on_pfa_led - illuminate PFA LED
4407  * @ioc: per adapter object
4408  * @handle: device handle
4409  * Context: process
4410  *
4411  * Return nothing.
4412  */
4413 static void
4414 _scsih_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4415 {
4416         Mpi2SepReply_t mpi_reply;
4417         Mpi2SepRequest_t mpi_request;
4418         struct _sas_device *sas_device;
4419
4420         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
4421         if (!sas_device)
4422                 return;
4423
4424         memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4425         mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4426         mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4427         mpi_request.SlotStatus =
4428             cpu_to_le32(MPI2_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
4429         mpi_request.DevHandle = cpu_to_le16(handle);
4430         mpi_request.Flags = MPI2_SEP_REQ_FLAGS_DEVHANDLE_ADDRESS;
4431         if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4432             &mpi_request)) != 0) {
4433                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4434                 __FILE__, __LINE__, __func__);
4435                 goto out;
4436         }
4437         sas_device->pfa_led_on = 1;
4438
4439         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4440                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
4441                         "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4442                         ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4443                     le32_to_cpu(mpi_reply.IOCLogInfo)));
4444                 goto out;
4445         }
4446 out:
4447         sas_device_put(sas_device);
4448 }
4449
4450 /**
4451  * _scsih_turn_off_pfa_led - turn off Fault LED
4452  * @ioc: per adapter object
4453  * @sas_device: sas device whose PFA LED has to turned off
4454  * Context: process
4455  *
4456  * Return nothing.
4457  */
4458 static void
4459 _scsih_turn_off_pfa_led(struct MPT3SAS_ADAPTER *ioc,
4460         struct _sas_device *sas_device)
4461 {
4462         Mpi2SepReply_t mpi_reply;
4463         Mpi2SepRequest_t mpi_request;
4464
4465         memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4466         mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4467         mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4468         mpi_request.SlotStatus = 0;
4469         mpi_request.Slot = cpu_to_le16(sas_device->slot);
4470         mpi_request.DevHandle = 0;
4471         mpi_request.EnclosureHandle = cpu_to_le16(sas_device->enclosure_handle);
4472         mpi_request.Flags = MPI2_SEP_REQ_FLAGS_ENCLOSURE_SLOT_ADDRESS;
4473         if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4474                 &mpi_request)) != 0) {
4475                 printk(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4476                 __FILE__, __LINE__, __func__);
4477                 return;
4478         }
4479
4480         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4481                 dewtprintk(ioc, printk(MPT3SAS_FMT
4482                  "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4483                  ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4484                  le32_to_cpu(mpi_reply.IOCLogInfo)));
4485                 return;
4486         }
4487 }
4488
4489 /**
4490  * _scsih_send_event_to_turn_on_pfa_led - fire delayed event
4491  * @ioc: per adapter object
4492  * @handle: device handle
4493  * Context: interrupt.
4494  *
4495  * Return nothing.
4496  */
4497 static void
4498 _scsih_send_event_to_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4499 {
4500         struct fw_event_work *fw_event;
4501
4502         fw_event = alloc_fw_event_work(0);
4503         if (!fw_event)
4504                 return;
4505         fw_event->event = MPT3SAS_TURN_ON_PFA_LED;
4506         fw_event->device_handle = handle;
4507         fw_event->ioc = ioc;
4508         _scsih_fw_event_add(ioc, fw_event);
4509         fw_event_work_put(fw_event);
4510 }
4511
4512 /**
4513  * _scsih_smart_predicted_fault - process smart errors
4514  * @ioc: per adapter object
4515  * @handle: device handle
4516  * Context: interrupt.
4517  *
4518  * Return nothing.
4519  */
4520 static void
4521 _scsih_smart_predicted_fault(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4522 {
4523         struct scsi_target *starget;
4524         struct MPT3SAS_TARGET *sas_target_priv_data;
4525         Mpi2EventNotificationReply_t *event_reply;
4526         Mpi2EventDataSasDeviceStatusChange_t *event_data;
4527         struct _sas_device *sas_device;
4528         ssize_t sz;
4529         unsigned long flags;
4530
4531         /* only handle non-raid devices */
4532         spin_lock_irqsave(&ioc->sas_device_lock, flags);
4533         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
4534         if (!sas_device)
4535                 goto out_unlock;
4536
4537         starget = sas_device->starget;
4538         sas_target_priv_data = starget->hostdata;
4539
4540         if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) ||
4541            ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)))
4542                 goto out_unlock;
4543
4544         if (sas_device->enclosure_handle != 0)
4545                 starget_printk(KERN_INFO, starget, "predicted fault, "
4546                         "enclosure logical id(0x%016llx), slot(%d)\n",
4547                         (unsigned long long)sas_device->enclosure_logical_id,
4548                         sas_device->slot);
4549         if (sas_device->connector_name[0] != '\0')
4550                 starget_printk(KERN_WARNING, starget, "predicted fault, "
4551                         "enclosure level(0x%04x), connector name( %s)\n",
4552                         sas_device->enclosure_level,
4553                         sas_device->connector_name);
4554         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4555
4556         if (ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
4557                 _scsih_send_event_to_turn_on_pfa_led(ioc, handle);
4558
4559         /* insert into event log */
4560         sz = offsetof(Mpi2EventNotificationReply_t, EventData) +
4561              sizeof(Mpi2EventDataSasDeviceStatusChange_t);
4562         event_reply = kzalloc(sz, GFP_KERNEL);
4563         if (!event_reply) {
4564                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4565                     ioc->name, __FILE__, __LINE__, __func__);
4566                 goto out;
4567         }
4568
4569         event_reply->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
4570         event_reply->Event =
4571             cpu_to_le16(MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4572         event_reply->MsgLength = sz/4;
4573         event_reply->EventDataLength =
4574             cpu_to_le16(sizeof(Mpi2EventDataSasDeviceStatusChange_t)/4);
4575         event_data = (Mpi2EventDataSasDeviceStatusChange_t *)
4576             event_reply->EventData;
4577         event_data->ReasonCode = MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA;
4578         event_data->ASC = 0x5D;
4579         event_data->DevHandle = cpu_to_le16(handle);
4580         event_data->SASAddress = cpu_to_le64(sas_target_priv_data->sas_address);
4581         mpt3sas_ctl_add_to_event_log(ioc, event_reply);
4582         kfree(event_reply);
4583 out:
4584         if (sas_device)
4585                 sas_device_put(sas_device);
4586         return;
4587
4588 out_unlock:
4589         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4590         goto out;
4591 }
4592
4593 /**
4594  * _scsih_io_done - scsi request callback
4595  * @ioc: per adapter object
4596  * @smid: system request message index
4597  * @msix_index: MSIX table index supplied by the OS
4598  * @reply: reply message frame(lower 32bit addr)
4599  *
4600  * Callback handler when using _scsih_qcmd.
4601  *
4602  * Return 1 meaning mf should be freed from _base_interrupt
4603  *        0 means the mf is freed from this function.
4604  */
4605 static u8
4606 _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
4607 {
4608         Mpi2SCSIIORequest_t *mpi_request;
4609         Mpi2SCSIIOReply_t *mpi_reply;
4610         struct scsi_cmnd *scmd;
4611         u16 ioc_status;
4612         u32 xfer_cnt;
4613         u8 scsi_state;
4614         u8 scsi_status;
4615         u32 log_info;
4616         struct MPT3SAS_DEVICE *sas_device_priv_data;
4617         u32 response_code = 0;
4618         unsigned long flags;
4619
4620         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
4621         scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
4622         if (scmd == NULL)
4623                 return 1;
4624
4625         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4626
4627         if (mpi_reply == NULL) {
4628                 scmd->result = DID_OK << 16;
4629                 goto out;
4630         }
4631
4632         sas_device_priv_data = scmd->device->hostdata;
4633         if (!sas_device_priv_data || !sas_device_priv_data->sas_target ||
4634              sas_device_priv_data->sas_target->deleted) {
4635                 scmd->result = DID_NO_CONNECT << 16;
4636                 goto out;
4637         }
4638         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
4639
4640         /*
4641          * WARPDRIVE: If direct_io is set then it is directIO,
4642          * the failed direct I/O should be redirected to volume
4643          */
4644         if (mpt3sas_scsi_direct_io_get(ioc, smid) &&
4645              ((ioc_status & MPI2_IOCSTATUS_MASK)
4646               != MPI2_IOCSTATUS_SCSI_TASK_TERMINATED)) {
4647                 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4648                 ioc->scsi_lookup[smid - 1].scmd = scmd;
4649                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4650                 mpt3sas_scsi_direct_io_set(ioc, smid, 0);
4651                 memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4652                 mpi_request->DevHandle =
4653                     cpu_to_le16(sas_device_priv_data->sas_target->handle);
4654                 mpt3sas_base_put_smid_scsi_io(ioc, smid,
4655                     sas_device_priv_data->sas_target->handle);
4656                 return 0;
4657         }
4658         /* turning off TLR */
4659         scsi_state = mpi_reply->SCSIState;
4660         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4661                 response_code =
4662                     le32_to_cpu(mpi_reply->ResponseInfo) & 0xFF;
4663         if (!sas_device_priv_data->tlr_snoop_check) {
4664                 sas_device_priv_data->tlr_snoop_check++;
4665                 if (!ioc->is_warpdrive &&
4666                     !scsih_is_raid(&scmd->device->sdev_gendev) &&
4667                     sas_is_tlr_enabled(scmd->device) &&
4668                     response_code == MPI2_SCSITASKMGMT_RSP_INVALID_FRAME) {
4669                         sas_disable_tlr(scmd->device);
4670                         sdev_printk(KERN_INFO, scmd->device, "TLR disabled\n");
4671                 }
4672         }
4673
4674         xfer_cnt = le32_to_cpu(mpi_reply->TransferCount);
4675         scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_cnt);
4676         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
4677                 log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
4678         else
4679                 log_info = 0;
4680         ioc_status &= MPI2_IOCSTATUS_MASK;
4681         scsi_status = mpi_reply->SCSIStatus;
4682
4683         if (ioc_status == MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
4684             (scsi_status == MPI2_SCSI_STATUS_BUSY ||
4685              scsi_status == MPI2_SCSI_STATUS_RESERVATION_CONFLICT ||
4686              scsi_status == MPI2_SCSI_STATUS_TASK_SET_FULL)) {
4687                 ioc_status = MPI2_IOCSTATUS_SUCCESS;
4688         }
4689
4690         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4691                 struct sense_info data;
4692                 const void *sense_data = mpt3sas_base_get_sense_buffer(ioc,
4693                     smid);
4694                 u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
4695                     le32_to_cpu(mpi_reply->SenseCount));
4696                 memcpy(scmd->sense_buffer, sense_data, sz);
4697                 _scsih_normalize_sense(scmd->sense_buffer, &data);
4698                 /* failure prediction threshold exceeded */
4699                 if (data.asc == 0x5D)
4700                         _scsih_smart_predicted_fault(ioc,
4701                             le16_to_cpu(mpi_reply->DevHandle));
4702                 mpt3sas_trigger_scsi(ioc, data.skey, data.asc, data.ascq);
4703
4704                 if (!(ioc->logging_level & MPT_DEBUG_REPLY) &&
4705                      ((scmd->sense_buffer[2] == UNIT_ATTENTION) ||
4706                      (scmd->sense_buffer[2] == MEDIUM_ERROR) ||
4707                      (scmd->sense_buffer[2] == HARDWARE_ERROR)))
4708                         _scsih_scsi_ioc_info(ioc, scmd, mpi_reply, smid);
4709         }
4710         switch (ioc_status) {
4711         case MPI2_IOCSTATUS_BUSY:
4712         case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
4713                 scmd->result = SAM_STAT_BUSY;
4714                 break;
4715
4716         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4717                 scmd->result = DID_NO_CONNECT << 16;
4718                 break;
4719
4720         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4721                 if (sas_device_priv_data->block) {
4722                         scmd->result = DID_TRANSPORT_DISRUPTED << 16;
4723                         goto out;
4724                 }
4725                 if (log_info == 0x31110630) {
4726                         if (scmd->retries > 2) {
4727                                 scmd->result = DID_NO_CONNECT << 16;
4728                                 scsi_device_set_state(scmd->device,
4729                                     SDEV_OFFLINE);
4730                         } else {
4731                                 scmd->result = DID_SOFT_ERROR << 16;
4732                                 scmd->device->expecting_cc_ua = 1;
4733                         }
4734                         break;
4735                 } else if (log_info == VIRTUAL_IO_FAILED_RETRY) {
4736                         scmd->result = DID_RESET << 16;
4737                         break;
4738                 }
4739                 scmd->result = DID_SOFT_ERROR << 16;
4740                 break;
4741         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4742         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4743                 scmd->result = DID_RESET << 16;
4744                 break;
4745
4746         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4747                 if ((xfer_cnt == 0) || (scmd->underflow > xfer_cnt))
4748                         scmd->result = DID_SOFT_ERROR << 16;
4749                 else
4750                         scmd->result = (DID_OK << 16) | scsi_status;
4751                 break;
4752
4753         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4754                 scmd->result = (DID_OK << 16) | scsi_status;
4755
4756                 if ((scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID))
4757                         break;
4758
4759                 if (xfer_cnt < scmd->underflow) {
4760                         if (scsi_status == SAM_STAT_BUSY)
4761                                 scmd->result = SAM_STAT_BUSY;
4762                         else
4763                                 scmd->result = DID_SOFT_ERROR << 16;
4764                 } else if (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4765                      MPI2_SCSI_STATE_NO_SCSI_STATUS))
4766                         scmd->result = DID_SOFT_ERROR << 16;
4767                 else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4768                         scmd->result = DID_RESET << 16;
4769                 else if (!xfer_cnt && scmd->cmnd[0] == REPORT_LUNS) {
4770                         mpi_reply->SCSIState = MPI2_SCSI_STATE_AUTOSENSE_VALID;
4771                         mpi_reply->SCSIStatus = SAM_STAT_CHECK_CONDITION;
4772                         scmd->result = (DRIVER_SENSE << 24) |
4773                             SAM_STAT_CHECK_CONDITION;
4774                         scmd->sense_buffer[0] = 0x70;
4775                         scmd->sense_buffer[2] = ILLEGAL_REQUEST;
4776                         scmd->sense_buffer[12] = 0x20;
4777                         scmd->sense_buffer[13] = 0;
4778                 }
4779                 break;
4780
4781         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4782                 scsi_set_resid(scmd, 0);
4783         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4784         case MPI2_IOCSTATUS_SUCCESS:
4785                 scmd->result = (DID_OK << 16) | scsi_status;
4786                 if (response_code ==
4787                     MPI2_SCSITASKMGMT_RSP_INVALID_FRAME ||
4788                     (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4789                      MPI2_SCSI_STATE_NO_SCSI_STATUS)))
4790                         scmd->result = DID_SOFT_ERROR << 16;
4791                 else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4792                         scmd->result = DID_RESET << 16;
4793                 break;
4794
4795         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4796         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4797         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4798                 _scsih_eedp_error_handling(scmd, ioc_status);
4799                 break;
4800
4801         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4802         case MPI2_IOCSTATUS_INVALID_FUNCTION:
4803         case MPI2_IOCSTATUS_INVALID_SGL:
4804         case MPI2_IOCSTATUS_INTERNAL_ERROR:
4805         case MPI2_IOCSTATUS_INVALID_FIELD:
4806         case MPI2_IOCSTATUS_INVALID_STATE:
4807         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4808         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4809         case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4810         default:
4811                 scmd->result = DID_SOFT_ERROR << 16;
4812                 break;
4813
4814         }
4815
4816         if (scmd->result && (ioc->logging_level & MPT_DEBUG_REPLY))
4817                 _scsih_scsi_ioc_info(ioc , scmd, mpi_reply, smid);
4818
4819  out:
4820
4821         scsi_dma_unmap(scmd);
4822
4823         scmd->scsi_done(scmd);
4824         return 1;
4825 }
4826
4827 /**
4828  * _scsih_sas_host_refresh - refreshing sas host object contents
4829  * @ioc: per adapter object
4830  * Context: user
4831  *
4832  * During port enable, fw will send topology events for every device. Its
4833  * possible that the handles may change from the previous setting, so this
4834  * code keeping handles updating if changed.
4835  *
4836  * Return nothing.
4837  */
4838 static void
4839 _scsih_sas_host_refresh(struct MPT3SAS_ADAPTER *ioc)
4840 {
4841         u16 sz;
4842         u16 ioc_status;
4843         int i;
4844         Mpi2ConfigReply_t mpi_reply;
4845         Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4846         u16 attached_handle;
4847         u8 link_rate;
4848
4849         dtmprintk(ioc, pr_info(MPT3SAS_FMT
4850             "updating handles for sas_host(0x%016llx)\n",
4851             ioc->name, (unsigned long long)ioc->sas_hba.sas_address));
4852
4853         sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys
4854             * sizeof(Mpi2SasIOUnit0PhyData_t));
4855         sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4856         if (!sas_iounit_pg0) {
4857                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4858                     ioc->name, __FILE__, __LINE__, __func__);
4859                 return;
4860         }
4861
4862         if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
4863             sas_iounit_pg0, sz)) != 0)
4864                 goto out;
4865         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
4866         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
4867                 goto out;
4868         for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
4869                 link_rate = sas_iounit_pg0->PhyData[i].NegotiatedLinkRate >> 4;
4870                 if (i == 0)
4871                         ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
4872                             PhyData[0].ControllerDevHandle);
4873                 ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
4874                 attached_handle = le16_to_cpu(sas_iounit_pg0->PhyData[i].
4875                     AttachedDevHandle);
4876                 if (attached_handle && link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
4877                         link_rate = MPI2_SAS_NEG_LINK_RATE_1_5;
4878                 mpt3sas_transport_update_links(ioc, ioc->sas_hba.sas_address,
4879                     attached_handle, i, link_rate);
4880         }
4881  out:
4882         kfree(sas_iounit_pg0);
4883 }
4884
4885 /**
4886  * _scsih_sas_host_add - create sas host object
4887  * @ioc: per adapter object
4888  *
4889  * Creating host side data object, stored in ioc->sas_hba
4890  *
4891  * Return nothing.
4892  */
4893 static void
4894 _scsih_sas_host_add(struct MPT3SAS_ADAPTER *ioc)
4895 {
4896         int i;
4897         Mpi2ConfigReply_t mpi_reply;
4898         Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4899         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
4900         Mpi2SasPhyPage0_t phy_pg0;
4901         Mpi2SasDevicePage0_t sas_device_pg0;
4902         Mpi2SasEnclosurePage0_t enclosure_pg0;
4903         u16 ioc_status;
4904         u16 sz;
4905         u8 device_missing_delay;
4906         u8 num_phys;
4907
4908         mpt3sas_config_get_number_hba_phys(ioc, &num_phys);
4909         if (!num_phys) {
4910                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4911                     ioc->name, __FILE__, __LINE__, __func__);
4912                 return;
4913         }
4914         ioc->sas_hba.phy = kcalloc(num_phys,
4915             sizeof(struct _sas_phy), GFP_KERNEL);
4916         if (!ioc->sas_hba.phy) {
4917                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4918                     ioc->name, __FILE__, __LINE__, __func__);
4919                 goto out;
4920         }
4921         ioc->sas_hba.num_phys = num_phys;
4922
4923         /* sas_iounit page 0 */
4924         sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
4925             sizeof(Mpi2SasIOUnit0PhyData_t));
4926         sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4927         if (!sas_iounit_pg0) {
4928                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4929                     ioc->name, __FILE__, __LINE__, __func__);
4930                 return;
4931         }
4932         if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
4933             sas_iounit_pg0, sz))) {
4934                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4935                     ioc->name, __FILE__, __LINE__, __func__);
4936                 goto out;
4937         }
4938         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
4939             MPI2_IOCSTATUS_MASK;
4940         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
4941                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4942                     ioc->name, __FILE__, __LINE__, __func__);
4943                 goto out;
4944         }
4945
4946         /* sas_iounit page 1 */
4947         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
4948             sizeof(Mpi2SasIOUnit1PhyData_t));
4949         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
4950         if (!sas_iounit_pg1) {
4951                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4952                     ioc->name, __FILE__, __LINE__, __func__);
4953                 goto out;
4954         }
4955         if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
4956             sas_iounit_pg1, sz))) {
4957                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4958                     ioc->name, __FILE__, __LINE__, __func__);
4959                 goto out;
4960         }
4961         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
4962             MPI2_IOCSTATUS_MASK;
4963         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
4964                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4965                     ioc->name, __FILE__, __LINE__, __func__);
4966                 goto out;
4967         }
4968
4969         ioc->io_missing_delay =
4970             sas_iounit_pg1->IODeviceMissingDelay;
4971         device_missing_delay =
4972             sas_iounit_pg1->ReportDeviceMissingDelay;
4973         if (device_missing_delay & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
4974                 ioc->device_missing_delay = (device_missing_delay &
4975                     MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
4976         else
4977                 ioc->device_missing_delay = device_missing_delay &
4978                     MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
4979
4980         ioc->sas_hba.parent_dev = &ioc->shost->shost_gendev;
4981         for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
4982                 if ((mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
4983                     i))) {
4984                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4985                             ioc->name, __FILE__, __LINE__, __func__);
4986                         goto out;
4987                 }
4988                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
4989                     MPI2_IOCSTATUS_MASK;
4990                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
4991                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4992                             ioc->name, __FILE__, __LINE__, __func__);
4993                         goto out;
4994                 }
4995
4996                 if (i == 0)
4997                         ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
4998                             PhyData[0].ControllerDevHandle);
4999                 ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
5000                 ioc->sas_hba.phy[i].phy_id = i;
5001                 mpt3sas_transport_add_host_phy(ioc, &ioc->sas_hba.phy[i],
5002                     phy_pg0, ioc->sas_hba.parent_dev);
5003         }
5004         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5005             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, ioc->sas_hba.handle))) {
5006                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5007                     ioc->name, __FILE__, __LINE__, __func__);
5008                 goto out;
5009         }
5010         ioc->sas_hba.enclosure_handle =
5011             le16_to_cpu(sas_device_pg0.EnclosureHandle);
5012         ioc->sas_hba.sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5013         pr_info(MPT3SAS_FMT
5014                 "host_add: handle(0x%04x), sas_addr(0x%016llx), phys(%d)\n",
5015                 ioc->name, ioc->sas_hba.handle,
5016             (unsigned long long) ioc->sas_hba.sas_address,
5017             ioc->sas_hba.num_phys) ;
5018
5019         if (ioc->sas_hba.enclosure_handle) {
5020                 if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5021                     &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5022                    ioc->sas_hba.enclosure_handle)))
5023                         ioc->sas_hba.enclosure_logical_id =
5024                             le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5025         }
5026
5027  out:
5028         kfree(sas_iounit_pg1);
5029         kfree(sas_iounit_pg0);
5030 }
5031
5032 /**
5033  * _scsih_expander_add -  creating expander object
5034  * @ioc: per adapter object
5035  * @handle: expander handle
5036  *
5037  * Creating expander object, stored in ioc->sas_expander_list.
5038  *
5039  * Return 0 for success, else error.
5040  */
5041 static int
5042 _scsih_expander_add(struct MPT3SAS_ADAPTER *ioc, u16 handle)
5043 {
5044         struct _sas_node *sas_expander;
5045         Mpi2ConfigReply_t mpi_reply;
5046         Mpi2ExpanderPage0_t expander_pg0;
5047         Mpi2ExpanderPage1_t expander_pg1;
5048         Mpi2SasEnclosurePage0_t enclosure_pg0;
5049         u32 ioc_status;
5050         u16 parent_handle;
5051         u64 sas_address, sas_address_parent = 0;
5052         int i;
5053         unsigned long flags;
5054         struct _sas_port *mpt3sas_port = NULL;
5055
5056         int rc = 0;
5057
5058         if (!handle)
5059                 return -1;
5060
5061         if (ioc->shost_recovery || ioc->pci_error_recovery)
5062                 return -1;
5063
5064         if ((mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
5065             MPI2_SAS_EXPAND_PGAD_FORM_HNDL, handle))) {
5066                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5067                     ioc->name, __FILE__, __LINE__, __func__);
5068                 return -1;
5069         }
5070
5071         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5072             MPI2_IOCSTATUS_MASK;
5073         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5074                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5075                     ioc->name, __FILE__, __LINE__, __func__);
5076                 return -1;
5077         }
5078
5079         /* handle out of order topology events */
5080         parent_handle = le16_to_cpu(expander_pg0.ParentDevHandle);
5081         if (_scsih_get_sas_address(ioc, parent_handle, &sas_address_parent)
5082             != 0) {
5083                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5084                     ioc->name, __FILE__, __LINE__, __func__);
5085                 return -1;
5086         }
5087         if (sas_address_parent != ioc->sas_hba.sas_address) {
5088                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
5089                 sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5090                     sas_address_parent);
5091                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5092                 if (!sas_expander) {
5093                         rc = _scsih_expander_add(ioc, parent_handle);
5094                         if (rc != 0)
5095                                 return rc;
5096                 }
5097         }
5098
5099         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5100         sas_address = le64_to_cpu(expander_pg0.SASAddress);
5101         sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5102             sas_address);
5103         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5104
5105         if (sas_expander)
5106                 return 0;
5107
5108         sas_expander = kzalloc(sizeof(struct _sas_node),
5109             GFP_KERNEL);
5110         if (!sas_expander) {
5111                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5112                     ioc->name, __FILE__, __LINE__, __func__);
5113                 return -1;
5114         }
5115
5116         sas_expander->handle = handle;
5117         sas_expander->num_phys = expander_pg0.NumPhys;
5118         sas_expander->sas_address_parent = sas_address_parent;
5119         sas_expander->sas_address = sas_address;
5120
5121         pr_info(MPT3SAS_FMT "expander_add: handle(0x%04x)," \
5122             " parent(0x%04x), sas_addr(0x%016llx), phys(%d)\n", ioc->name,
5123             handle, parent_handle, (unsigned long long)
5124             sas_expander->sas_address, sas_expander->num_phys);
5125
5126         if (!sas_expander->num_phys)
5127                 goto out_fail;
5128         sas_expander->phy = kcalloc(sas_expander->num_phys,
5129             sizeof(struct _sas_phy), GFP_KERNEL);
5130         if (!sas_expander->phy) {
5131                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5132                     ioc->name, __FILE__, __LINE__, __func__);
5133                 rc = -1;
5134                 goto out_fail;
5135         }
5136
5137         INIT_LIST_HEAD(&sas_expander->sas_port_list);
5138         mpt3sas_port = mpt3sas_transport_port_add(ioc, handle,
5139             sas_address_parent);
5140         if (!mpt3sas_port) {
5141                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5142                     ioc->name, __FILE__, __LINE__, __func__);
5143                 rc = -1;
5144                 goto out_fail;
5145         }
5146         sas_expander->parent_dev = &mpt3sas_port->rphy->dev;
5147
5148         for (i = 0 ; i < sas_expander->num_phys ; i++) {
5149                 if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
5150                     &expander_pg1, i, handle))) {
5151                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5152                             ioc->name, __FILE__, __LINE__, __func__);
5153                         rc = -1;
5154                         goto out_fail;
5155                 }
5156                 sas_expander->phy[i].handle = handle;
5157                 sas_expander->phy[i].phy_id = i;
5158
5159                 if ((mpt3sas_transport_add_expander_phy(ioc,
5160                     &sas_expander->phy[i], expander_pg1,
5161                     sas_expander->parent_dev))) {
5162                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5163                             ioc->name, __FILE__, __LINE__, __func__);
5164                         rc = -1;
5165                         goto out_fail;
5166                 }
5167         }
5168
5169         if (sas_expander->enclosure_handle) {
5170                 if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5171                     &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5172                    sas_expander->enclosure_handle)))
5173                         sas_expander->enclosure_logical_id =
5174                             le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5175         }
5176
5177         _scsih_expander_node_add(ioc, sas_expander);
5178          return 0;
5179
5180  out_fail:
5181
5182         if (mpt3sas_port)
5183                 mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
5184                     sas_address_parent);
5185         kfree(sas_expander);
5186         return rc;
5187 }
5188
5189 /**
5190  * mpt3sas_expander_remove - removing expander object
5191  * @ioc: per adapter object
5192  * @sas_address: expander sas_address
5193  *
5194  * Return nothing.
5195  */
5196 void
5197 mpt3sas_expander_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
5198 {
5199         struct _sas_node *sas_expander;
5200         unsigned long flags;
5201
5202         if (ioc->shost_recovery)
5203                 return;
5204
5205         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5206         sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5207             sas_address);
5208         if (sas_expander)
5209                 list_del(&sas_expander->list);
5210         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5211         if (sas_expander)
5212                 _scsih_expander_node_remove(ioc, sas_expander);
5213 }
5214
5215 /**
5216  * _scsih_done -  internal SCSI_IO callback handler.
5217  * @ioc: per adapter object
5218  * @smid: system request message index
5219  * @msix_index: MSIX table index supplied by the OS
5220  * @reply: reply message frame(lower 32bit addr)
5221  *
5222  * Callback handler when sending internal generated SCSI_IO.
5223  * The callback index passed is `ioc->scsih_cb_idx`
5224  *
5225  * Return 1 meaning mf should be freed from _base_interrupt
5226  *        0 means the mf is freed from this function.
5227  */
5228 static u8
5229 _scsih_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
5230 {
5231         MPI2DefaultReply_t *mpi_reply;
5232
5233         mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
5234         if (ioc->scsih_cmds.status == MPT3_CMD_NOT_USED)
5235                 return 1;
5236         if (ioc->scsih_cmds.smid != smid)
5237                 return 1;
5238         ioc->scsih_cmds.status |= MPT3_CMD_COMPLETE;
5239         if (mpi_reply) {
5240                 memcpy(ioc->scsih_cmds.reply, mpi_reply,
5241                     mpi_reply->MsgLength*4);
5242                 ioc->scsih_cmds.status |= MPT3_CMD_REPLY_VALID;
5243         }
5244         ioc->scsih_cmds.status &= ~MPT3_CMD_PENDING;
5245         complete(&ioc->scsih_cmds.done);
5246         return 1;
5247 }
5248
5249
5250
5251
5252 #define MPT3_MAX_LUNS (255)
5253
5254
5255 /**
5256  * _scsih_check_access_status - check access flags
5257  * @ioc: per adapter object
5258  * @sas_address: sas address
5259  * @handle: sas device handle
5260  * @access_flags: errors returned during discovery of the device
5261  *
5262  * Return 0 for success, else failure
5263  */
5264 static u8
5265 _scsih_check_access_status(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
5266         u16 handle, u8 access_status)
5267 {
5268         u8 rc = 1;
5269         char *desc = NULL;
5270
5271         switch (access_status) {
5272         case MPI2_SAS_DEVICE0_ASTATUS_NO_ERRORS:
5273         case MPI2_SAS_DEVICE0_ASTATUS_SATA_NEEDS_INITIALIZATION:
5274                 rc = 0;
5275                 break;
5276         case MPI2_SAS_DEVICE0_ASTATUS_SATA_CAPABILITY_FAILED:
5277                 desc = "sata capability failed";
5278                 break;
5279         case MPI2_SAS_DEVICE0_ASTATUS_SATA_AFFILIATION_CONFLICT:
5280                 desc = "sata affiliation conflict";
5281                 break;
5282         case MPI2_SAS_DEVICE0_ASTATUS_ROUTE_NOT_ADDRESSABLE:
5283                 desc = "route not addressable";
5284                 break;
5285         case MPI2_SAS_DEVICE0_ASTATUS_SMP_ERROR_NOT_ADDRESSABLE:
5286                 desc = "smp error not addressable";
5287                 break;
5288         case MPI2_SAS_DEVICE0_ASTATUS_DEVICE_BLOCKED:
5289                 desc = "device blocked";
5290                 break;
5291         case MPI2_SAS_DEVICE0_ASTATUS_SATA_INIT_FAILED:
5292         case MPI2_SAS_DEVICE0_ASTATUS_SIF_UNKNOWN:
5293         case MPI2_SAS_DEVICE0_ASTATUS_SIF_AFFILIATION_CONFLICT:
5294         case MPI2_SAS_DEVICE0_ASTATUS_SIF_DIAG:
5295         case MPI2_SAS_DEVICE0_ASTATUS_SIF_IDENTIFICATION:
5296         case MPI2_SAS_DEVICE0_ASTATUS_SIF_CHECK_POWER:
5297         case MPI2_SAS_DEVICE0_ASTATUS_SIF_PIO_SN:
5298         case MPI2_SAS_DEVICE0_ASTATUS_SIF_MDMA_SN:
5299         case MPI2_SAS_DEVICE0_ASTATUS_SIF_UDMA_SN:
5300         case MPI2_SAS_DEVICE0_ASTATUS_SIF_ZONING_VIOLATION:
5301         case MPI2_SAS_DEVICE0_ASTATUS_SIF_NOT_ADDRESSABLE:
5302         case MPI2_SAS_DEVICE0_ASTATUS_SIF_MAX:
5303                 desc = "sata initialization failed";
5304                 break;
5305         default:
5306                 desc = "unknown";
5307                 break;
5308         }
5309
5310         if (!rc)
5311                 return 0;
5312
5313         pr_err(MPT3SAS_FMT
5314                 "discovery errors(%s): sas_address(0x%016llx), handle(0x%04x)\n",
5315                 ioc->name, desc, (unsigned long long)sas_address, handle);
5316         return rc;
5317 }
5318
5319 /**
5320  * _scsih_check_device - checking device responsiveness
5321  * @ioc: per adapter object
5322  * @parent_sas_address: sas address of parent expander or sas host
5323  * @handle: attached device handle
5324  * @phy_numberv: phy number
5325  * @link_rate: new link rate
5326  *
5327  * Returns nothing.
5328  */
5329 static void
5330 _scsih_check_device(struct MPT3SAS_ADAPTER *ioc,
5331         u64 parent_sas_address, u16 handle, u8 phy_number, u8 link_rate)
5332 {
5333         Mpi2ConfigReply_t mpi_reply;
5334         Mpi2SasDevicePage0_t sas_device_pg0;
5335         struct _sas_device *sas_device;
5336         u32 ioc_status;
5337         unsigned long flags;
5338         u64 sas_address;
5339         struct scsi_target *starget;
5340         struct MPT3SAS_TARGET *sas_target_priv_data;
5341         u32 device_info;
5342
5343
5344         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5345             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle)))
5346                 return;
5347
5348         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
5349         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
5350                 return;
5351
5352         /* wide port handling ~ we need only handle device once for the phy that
5353          * is matched in sas device page zero
5354          */
5355         if (phy_number != sas_device_pg0.PhyNum)
5356                 return;
5357
5358         /* check if this is end device */
5359         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5360         if (!(_scsih_is_end_device(device_info)))
5361                 return;
5362
5363         spin_lock_irqsave(&ioc->sas_device_lock, flags);
5364         sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5365         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
5366             sas_address);
5367
5368         if (!sas_device)
5369                 goto out_unlock;
5370
5371         if (unlikely(sas_device->handle != handle)) {
5372                 starget = sas_device->starget;
5373                 sas_target_priv_data = starget->hostdata;
5374                 starget_printk(KERN_INFO, starget,
5375                         "handle changed from(0x%04x) to (0x%04x)!!!\n",
5376                         sas_device->handle, handle);
5377                 sas_target_priv_data->handle = handle;
5378                 sas_device->handle = handle;
5379                 if (sas_device_pg0.Flags &
5380                      MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5381                         sas_device->enclosure_level =
5382                                 le16_to_cpu(sas_device_pg0.EnclosureLevel);
5383                         memcpy(&sas_device->connector_name[0],
5384                                 &sas_device_pg0.ConnectorName[0], 4);
5385                 } else {
5386                         sas_device->enclosure_level = 0;
5387                         sas_device->connector_name[0] = '\0';
5388                 }
5389         }
5390
5391         /* check if device is present */
5392         if (!(le16_to_cpu(sas_device_pg0.Flags) &
5393             MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5394                 pr_err(MPT3SAS_FMT
5395                         "device is not present handle(0x%04x), flags!!!\n",
5396                         ioc->name, handle);
5397                 goto out_unlock;
5398         }
5399
5400         /* check if there were any issues with discovery */
5401         if (_scsih_check_access_status(ioc, sas_address, handle,
5402             sas_device_pg0.AccessStatus))
5403                 goto out_unlock;
5404
5405         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5406         _scsih_ublock_io_device(ioc, sas_address);
5407
5408         if (sas_device)
5409                 sas_device_put(sas_device);
5410         return;
5411
5412 out_unlock:
5413         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5414         if (sas_device)
5415                 sas_device_put(sas_device);
5416 }
5417
5418 /**
5419  * _scsih_add_device -  creating sas device object
5420  * @ioc: per adapter object
5421  * @handle: sas device handle
5422  * @phy_num: phy number end device attached to
5423  * @is_pd: is this hidden raid component
5424  *
5425  * Creating end device object, stored in ioc->sas_device_list.
5426  *
5427  * Returns 0 for success, non-zero for failure.
5428  */
5429 static int
5430 _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phy_num,
5431         u8 is_pd)
5432 {
5433         Mpi2ConfigReply_t mpi_reply;
5434         Mpi2SasDevicePage0_t sas_device_pg0;
5435         Mpi2SasEnclosurePage0_t enclosure_pg0;
5436         struct _sas_device *sas_device;
5437         u32 ioc_status;
5438         u64 sas_address;
5439         u32 device_info;
5440
5441         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5442             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
5443                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5444                     ioc->name, __FILE__, __LINE__, __func__);
5445                 return -1;
5446         }
5447
5448         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5449             MPI2_IOCSTATUS_MASK;
5450         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5451                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5452                     ioc->name, __FILE__, __LINE__, __func__);
5453                 return -1;
5454         }
5455
5456         /* check if this is end device */
5457         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5458         if (!(_scsih_is_end_device(device_info)))
5459                 return -1;
5460         sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5461
5462         /* check if device is present */
5463         if (!(le16_to_cpu(sas_device_pg0.Flags) &
5464             MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5465                 pr_err(MPT3SAS_FMT "device is not present handle(0x04%x)!!!\n",
5466                         ioc->name, handle);
5467                 return -1;
5468         }
5469
5470         /* check if there were any issues with discovery */
5471         if (_scsih_check_access_status(ioc, sas_address, handle,
5472             sas_device_pg0.AccessStatus))
5473                 return -1;
5474
5475         sas_device = mpt3sas_get_sdev_by_addr(ioc,
5476                                         sas_address);
5477         if (sas_device) {
5478                 sas_device_put(sas_device);
5479                 return -1;
5480         }
5481
5482         sas_device = kzalloc(sizeof(struct _sas_device),
5483             GFP_KERNEL);
5484         if (!sas_device) {
5485                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5486                     ioc->name, __FILE__, __LINE__, __func__);
5487                 return 0;
5488         }
5489
5490         kref_init(&sas_device->refcount);
5491         sas_device->handle = handle;
5492         if (_scsih_get_sas_address(ioc,
5493             le16_to_cpu(sas_device_pg0.ParentDevHandle),
5494             &sas_device->sas_address_parent) != 0)
5495                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5496                     ioc->name, __FILE__, __LINE__, __func__);
5497         sas_device->enclosure_handle =
5498             le16_to_cpu(sas_device_pg0.EnclosureHandle);
5499         if (sas_device->enclosure_handle != 0)
5500                 sas_device->slot =
5501                     le16_to_cpu(sas_device_pg0.Slot);
5502         sas_device->device_info = device_info;
5503         sas_device->sas_address = sas_address;
5504         sas_device->phy = sas_device_pg0.PhyNum;
5505         sas_device->fast_path = (le16_to_cpu(sas_device_pg0.Flags) &
5506             MPI25_SAS_DEVICE0_FLAGS_FAST_PATH_CAPABLE) ? 1 : 0;
5507
5508         if (sas_device_pg0.Flags & MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5509                 sas_device->enclosure_level =
5510                         le16_to_cpu(sas_device_pg0.EnclosureLevel);
5511                 memcpy(&sas_device->connector_name[0],
5512                         &sas_device_pg0.ConnectorName[0], 4);
5513         } else {
5514                 sas_device->enclosure_level = 0;
5515                 sas_device->connector_name[0] = '\0';
5516         }
5517         /* get enclosure_logical_id */
5518         if (sas_device->enclosure_handle && !(mpt3sas_config_get_enclosure_pg0(
5519            ioc, &mpi_reply, &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5520            sas_device->enclosure_handle)))
5521                 sas_device->enclosure_logical_id =
5522                     le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5523
5524         /* get device name */
5525         sas_device->device_name = le64_to_cpu(sas_device_pg0.DeviceName);
5526
5527         if (ioc->wait_for_discovery_to_complete)
5528                 _scsih_sas_device_init_add(ioc, sas_device);
5529         else
5530                 _scsih_sas_device_add(ioc, sas_device);
5531
5532         sas_device_put(sas_device);
5533         return 0;
5534 }
5535
5536 /**
5537  * _scsih_remove_device -  removing sas device object
5538  * @ioc: per adapter object
5539  * @sas_device_delete: the sas_device object
5540  *
5541  * Return nothing.
5542  */
5543 static void
5544 _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
5545         struct _sas_device *sas_device)
5546 {
5547         struct MPT3SAS_TARGET *sas_target_priv_data;
5548
5549         if ((ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM) &&
5550              (sas_device->pfa_led_on)) {
5551                 _scsih_turn_off_pfa_led(ioc, sas_device);
5552                 sas_device->pfa_led_on = 0;
5553         }
5554         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5555                 "%s: enter: handle(0x%04x), sas_addr(0x%016llx)\n",
5556                 ioc->name, __func__,
5557             sas_device->handle, (unsigned long long)
5558             sas_device->sas_address));
5559         if (sas_device->enclosure_handle != 0)
5560                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5561                     "%s: enter: enclosure logical id(0x%016llx), slot(%d)\n",
5562                     ioc->name, __func__,
5563                     (unsigned long long)sas_device->enclosure_logical_id,
5564                     sas_device->slot));
5565         if (sas_device->connector_name[0] != '\0')
5566                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5567                   "%s: enter: enclosure level(0x%04x), connector name( %s)\n",
5568                   ioc->name, __func__,
5569                   sas_device->enclosure_level,
5570                   sas_device->connector_name));
5571
5572         if (sas_device->starget && sas_device->starget->hostdata) {
5573                 sas_target_priv_data = sas_device->starget->hostdata;
5574                 sas_target_priv_data->deleted = 1;
5575                 _scsih_ublock_io_device(ioc, sas_device->sas_address);
5576                 sas_target_priv_data->handle =
5577                      MPT3SAS_INVALID_DEVICE_HANDLE;
5578         }
5579
5580         if (!ioc->hide_drives)
5581                 mpt3sas_transport_port_remove(ioc,
5582                     sas_device->sas_address,
5583                     sas_device->sas_address_parent);
5584
5585         pr_info(MPT3SAS_FMT
5586                 "removing handle(0x%04x), sas_addr(0x%016llx)\n",
5587                 ioc->name, sas_device->handle,
5588             (unsigned long long) sas_device->sas_address);
5589         if (sas_device->enclosure_handle != 0)
5590                 pr_info(MPT3SAS_FMT
5591                   "removing : enclosure logical id(0x%016llx), slot(%d)\n",
5592                   ioc->name,
5593                   (unsigned long long)sas_device->enclosure_logical_id,
5594                   sas_device->slot);
5595         if (sas_device->connector_name[0] != '\0')
5596                 pr_info(MPT3SAS_FMT
5597                   "removing enclosure level(0x%04x), connector name( %s)\n",
5598                   ioc->name, sas_device->enclosure_level,
5599                   sas_device->connector_name);
5600
5601         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5602                 "%s: exit: handle(0x%04x), sas_addr(0x%016llx)\n",
5603                 ioc->name, __func__,
5604                 sas_device->handle, (unsigned long long)
5605                 sas_device->sas_address));
5606         if (sas_device->enclosure_handle != 0)
5607                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5608                     "%s: exit: enclosure logical id(0x%016llx), slot(%d)\n",
5609                     ioc->name, __func__,
5610                     (unsigned long long)sas_device->enclosure_logical_id,
5611                     sas_device->slot));
5612         if (sas_device->connector_name[0] != '\0')
5613                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5614                     "%s: exit: enclosure level(0x%04x), connector name(%s)\n",
5615                     ioc->name, __func__, sas_device->enclosure_level,
5616                     sas_device->connector_name));
5617 }
5618
5619 /**
5620  * _scsih_sas_topology_change_event_debug - debug for topology event
5621  * @ioc: per adapter object
5622  * @event_data: event data payload
5623  * Context: user.
5624  */
5625 static void
5626 _scsih_sas_topology_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5627         Mpi2EventDataSasTopologyChangeList_t *event_data)
5628 {
5629         int i;
5630         u16 handle;
5631         u16 reason_code;
5632         u8 phy_number;
5633         char *status_str = NULL;
5634         u8 link_rate, prev_link_rate;
5635
5636         switch (event_data->ExpStatus) {
5637         case MPI2_EVENT_SAS_TOPO_ES_ADDED:
5638                 status_str = "add";
5639                 break;
5640         case MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
5641                 status_str = "remove";
5642                 break;
5643         case MPI2_EVENT_SAS_TOPO_ES_RESPONDING:
5644         case 0:
5645                 status_str =  "responding";
5646                 break;
5647         case MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
5648                 status_str = "remove delay";
5649                 break;
5650         default:
5651                 status_str = "unknown status";
5652                 break;
5653         }
5654         pr_info(MPT3SAS_FMT "sas topology change: (%s)\n",
5655             ioc->name, status_str);
5656         pr_info("\thandle(0x%04x), enclosure_handle(0x%04x) " \
5657             "start_phy(%02d), count(%d)\n",
5658             le16_to_cpu(event_data->ExpanderDevHandle),
5659             le16_to_cpu(event_data->EnclosureHandle),
5660             event_data->StartPhyNum, event_data->NumEntries);
5661         for (i = 0; i < event_data->NumEntries; i++) {
5662                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5663                 if (!handle)
5664                         continue;
5665                 phy_number = event_data->StartPhyNum + i;
5666                 reason_code = event_data->PHY[i].PhyStatus &
5667                     MPI2_EVENT_SAS_TOPO_RC_MASK;
5668                 switch (reason_code) {
5669                 case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5670                         status_str = "target add";
5671                         break;
5672                 case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5673                         status_str = "target remove";
5674                         break;
5675                 case MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING:
5676                         status_str = "delay target remove";
5677                         break;
5678                 case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5679                         status_str = "link rate change";
5680                         break;
5681                 case MPI2_EVENT_SAS_TOPO_RC_NO_CHANGE:
5682                         status_str = "target responding";
5683                         break;
5684                 default:
5685                         status_str = "unknown";
5686                         break;
5687                 }
5688                 link_rate = event_data->PHY[i].LinkRate >> 4;
5689                 prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5690                 pr_info("\tphy(%02d), attached_handle(0x%04x): %s:" \
5691                     " link rate: new(0x%02x), old(0x%02x)\n", phy_number,
5692                     handle, status_str, link_rate, prev_link_rate);
5693
5694         }
5695 }
5696
5697 /**
5698  * _scsih_sas_topology_change_event - handle topology changes
5699  * @ioc: per adapter object
5700  * @fw_event: The fw_event_work object
5701  * Context: user.
5702  *
5703  */
5704 static int
5705 _scsih_sas_topology_change_event(struct MPT3SAS_ADAPTER *ioc,
5706         struct fw_event_work *fw_event)
5707 {
5708         int i;
5709         u16 parent_handle, handle;
5710         u16 reason_code;
5711         u8 phy_number, max_phys;
5712         struct _sas_node *sas_expander;
5713         u64 sas_address;
5714         unsigned long flags;
5715         u8 link_rate, prev_link_rate;
5716         Mpi2EventDataSasTopologyChangeList_t *event_data =
5717                 (Mpi2EventDataSasTopologyChangeList_t *)
5718                 fw_event->event_data;
5719
5720         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5721                 _scsih_sas_topology_change_event_debug(ioc, event_data);
5722
5723         if (ioc->shost_recovery || ioc->remove_host || ioc->pci_error_recovery)
5724                 return 0;
5725
5726         if (!ioc->sas_hba.num_phys)
5727                 _scsih_sas_host_add(ioc);
5728         else
5729                 _scsih_sas_host_refresh(ioc);
5730
5731         if (fw_event->ignore) {
5732                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5733                         "ignoring expander event\n", ioc->name));
5734                 return 0;
5735         }
5736
5737         parent_handle = le16_to_cpu(event_data->ExpanderDevHandle);
5738
5739         /* handle expander add */
5740         if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_ADDED)
5741                 if (_scsih_expander_add(ioc, parent_handle) != 0)
5742                         return 0;
5743
5744         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5745         sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
5746             parent_handle);
5747         if (sas_expander) {
5748                 sas_address = sas_expander->sas_address;
5749                 max_phys = sas_expander->num_phys;
5750         } else if (parent_handle < ioc->sas_hba.num_phys) {
5751                 sas_address = ioc->sas_hba.sas_address;
5752                 max_phys = ioc->sas_hba.num_phys;
5753         } else {
5754                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5755                 return 0;
5756         }
5757         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5758
5759         /* handle siblings events */
5760         for (i = 0; i < event_data->NumEntries; i++) {
5761                 if (fw_event->ignore) {
5762                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5763                                 "ignoring expander event\n", ioc->name));
5764                         return 0;
5765                 }
5766                 if (ioc->remove_host || ioc->pci_error_recovery)
5767                         return 0;
5768                 phy_number = event_data->StartPhyNum + i;
5769                 if (phy_number >= max_phys)
5770                         continue;
5771                 reason_code = event_data->PHY[i].PhyStatus &
5772                     MPI2_EVENT_SAS_TOPO_RC_MASK;
5773                 if ((event_data->PHY[i].PhyStatus &
5774                     MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT) && (reason_code !=
5775                     MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING))
5776                                 continue;
5777                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5778                 if (!handle)
5779                         continue;
5780                 link_rate = event_data->PHY[i].LinkRate >> 4;
5781                 prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5782                 switch (reason_code) {
5783                 case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5784
5785                         if (ioc->shost_recovery)
5786                                 break;
5787
5788                         if (link_rate == prev_link_rate)
5789                                 break;
5790
5791                         mpt3sas_transport_update_links(ioc, sas_address,
5792                             handle, phy_number, link_rate);
5793
5794                         if (link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
5795                                 break;
5796
5797                         _scsih_check_device(ioc, sas_address, handle,
5798                             phy_number, link_rate);
5799
5800
5801                 case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5802
5803                         if (ioc->shost_recovery)
5804                                 break;
5805
5806                         mpt3sas_transport_update_links(ioc, sas_address,
5807                             handle, phy_number, link_rate);
5808
5809                         _scsih_add_device(ioc, handle, phy_number, 0);
5810
5811                         break;
5812                 case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5813
5814                         _scsih_device_remove_by_handle(ioc, handle);
5815                         break;
5816                 }
5817         }
5818
5819         /* handle expander removal */
5820         if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING &&
5821             sas_expander)
5822                 mpt3sas_expander_remove(ioc, sas_address);
5823
5824         return 0;
5825 }
5826
5827 /**
5828  * _scsih_sas_device_status_change_event_debug - debug for device event
5829  * @event_data: event data payload
5830  * Context: user.
5831  *
5832  * Return nothing.
5833  */
5834 static void
5835 _scsih_sas_device_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5836         Mpi2EventDataSasDeviceStatusChange_t *event_data)
5837 {
5838         char *reason_str = NULL;
5839
5840         switch (event_data->ReasonCode) {
5841         case MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA:
5842                 reason_str = "smart data";
5843                 break;
5844         case MPI2_EVENT_SAS_DEV_STAT_RC_UNSUPPORTED:
5845                 reason_str = "unsupported device discovered";
5846                 break;
5847         case MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET:
5848                 reason_str = "internal device reset";
5849                 break;
5850         case MPI2_EVENT_SAS_DEV_STAT_RC_TASK_ABORT_INTERNAL:
5851                 reason_str = "internal task abort";
5852                 break;
5853         case MPI2_EVENT_SAS_DEV_STAT_RC_ABORT_TASK_SET_INTERNAL:
5854                 reason_str = "internal task abort set";
5855                 break;
5856         case MPI2_EVENT_SAS_DEV_STAT_RC_CLEAR_TASK_SET_INTERNAL:
5857                 reason_str = "internal clear task set";
5858                 break;
5859         case MPI2_EVENT_SAS_DEV_STAT_RC_QUERY_TASK_INTERNAL:
5860                 reason_str = "internal query task";
5861                 break;
5862         case MPI2_EVENT_SAS_DEV_STAT_RC_SATA_INIT_FAILURE:
5863                 reason_str = "sata init failure";
5864                 break;
5865         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET:
5866                 reason_str = "internal device reset complete";
5867                 break;
5868         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_TASK_ABORT_INTERNAL:
5869                 reason_str = "internal task abort complete";
5870                 break;
5871         case MPI2_EVENT_SAS_DEV_STAT_RC_ASYNC_NOTIFICATION:
5872                 reason_str = "internal async notification";
5873                 break;
5874         case MPI2_EVENT_SAS_DEV_STAT_RC_EXPANDER_REDUCED_FUNCTIONALITY:
5875                 reason_str = "expander reduced functionality";
5876                 break;
5877         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_EXPANDER_REDUCED_FUNCTIONALITY:
5878                 reason_str = "expander reduced functionality complete";
5879                 break;
5880         default:
5881                 reason_str = "unknown reason";
5882                 break;
5883         }
5884         pr_info(MPT3SAS_FMT "device status change: (%s)\n"
5885             "\thandle(0x%04x), sas address(0x%016llx), tag(%d)",
5886             ioc->name, reason_str, le16_to_cpu(event_data->DevHandle),
5887             (unsigned long long)le64_to_cpu(event_data->SASAddress),
5888             le16_to_cpu(event_data->TaskTag));
5889         if (event_data->ReasonCode == MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA)
5890                 pr_info(MPT3SAS_FMT ", ASC(0x%x), ASCQ(0x%x)\n", ioc->name,
5891                     event_data->ASC, event_data->ASCQ);
5892         pr_info("\n");
5893 }
5894
5895 /**
5896  * _scsih_sas_device_status_change_event - handle device status change
5897  * @ioc: per adapter object
5898  * @fw_event: The fw_event_work object
5899  * Context: user.
5900  *
5901  * Return nothing.
5902  */
5903 static void
5904 _scsih_sas_device_status_change_event(struct MPT3SAS_ADAPTER *ioc,
5905         struct fw_event_work *fw_event)
5906 {
5907         struct MPT3SAS_TARGET *target_priv_data;
5908         struct _sas_device *sas_device;
5909         u64 sas_address;
5910         unsigned long flags;
5911         Mpi2EventDataSasDeviceStatusChange_t *event_data =
5912                 (Mpi2EventDataSasDeviceStatusChange_t *)
5913                 fw_event->event_data;
5914
5915         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5916                 _scsih_sas_device_status_change_event_debug(ioc,
5917                      event_data);
5918
5919         /* In MPI Revision K (0xC), the internal device reset complete was
5920          * implemented, so avoid setting tm_busy flag for older firmware.
5921          */
5922         if ((ioc->facts.HeaderVersion >> 8) < 0xC)
5923                 return;
5924
5925         if (event_data->ReasonCode !=
5926             MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET &&
5927            event_data->ReasonCode !=
5928             MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET)
5929                 return;
5930
5931         spin_lock_irqsave(&ioc->sas_device_lock, flags);
5932         sas_address = le64_to_cpu(event_data->SASAddress);
5933         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
5934             sas_address);
5935
5936         if (!sas_device || !sas_device->starget)
5937                 goto out;
5938
5939         target_priv_data = sas_device->starget->hostdata;
5940         if (!target_priv_data)
5941                 goto out;
5942
5943         if (event_data->ReasonCode ==
5944             MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET)
5945                 target_priv_data->tm_busy = 1;
5946         else
5947                 target_priv_data->tm_busy = 0;
5948
5949 out:
5950         if (sas_device)
5951                 sas_device_put(sas_device);
5952
5953         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5954
5955 }
5956
5957 /**
5958  * _scsih_sas_enclosure_dev_status_change_event_debug - debug for enclosure
5959  * event
5960  * @ioc: per adapter object
5961  * @event_data: event data payload
5962  * Context: user.
5963  *
5964  * Return nothing.
5965  */
5966 static void
5967 _scsih_sas_enclosure_dev_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5968         Mpi2EventDataSasEnclDevStatusChange_t *event_data)
5969 {
5970         char *reason_str = NULL;
5971
5972         switch (event_data->ReasonCode) {
5973         case MPI2_EVENT_SAS_ENCL_RC_ADDED:
5974                 reason_str = "enclosure add";
5975                 break;
5976         case MPI2_EVENT_SAS_ENCL_RC_NOT_RESPONDING:
5977                 reason_str = "enclosure remove";
5978                 break;
5979         default:
5980                 reason_str = "unknown reason";
5981                 break;
5982         }
5983
5984         pr_info(MPT3SAS_FMT "enclosure status change: (%s)\n"
5985             "\thandle(0x%04x), enclosure logical id(0x%016llx)"
5986             " number slots(%d)\n", ioc->name, reason_str,
5987             le16_to_cpu(event_data->EnclosureHandle),
5988             (unsigned long long)le64_to_cpu(event_data->EnclosureLogicalID),
5989             le16_to_cpu(event_data->StartSlot));
5990 }
5991
5992 /**
5993  * _scsih_sas_enclosure_dev_status_change_event - handle enclosure events
5994  * @ioc: per adapter object
5995  * @fw_event: The fw_event_work object
5996  * Context: user.
5997  *
5998  * Return nothing.
5999  */
6000 static void
6001 _scsih_sas_enclosure_dev_status_change_event(struct MPT3SAS_ADAPTER *ioc,
6002         struct fw_event_work *fw_event)
6003 {
6004         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
6005                 _scsih_sas_enclosure_dev_status_change_event_debug(ioc,
6006                      (Mpi2EventDataSasEnclDevStatusChange_t *)
6007                      fw_event->event_data);
6008 }
6009
6010 /**
6011  * _scsih_sas_broadcast_primitive_event - handle broadcast events
6012  * @ioc: per adapter object
6013  * @fw_event: The fw_event_work object
6014  * Context: user.
6015  *
6016  * Return nothing.
6017  */
6018 static void
6019 _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
6020         struct fw_event_work *fw_event)
6021 {
6022         struct scsi_cmnd *scmd;
6023         struct scsi_device *sdev;
6024         u16 smid, handle;
6025         u32 lun;
6026         struct MPT3SAS_DEVICE *sas_device_priv_data;
6027         u32 termination_count;
6028         u32 query_count;
6029         Mpi2SCSITaskManagementReply_t *mpi_reply;
6030         Mpi2EventDataSasBroadcastPrimitive_t *event_data =
6031                 (Mpi2EventDataSasBroadcastPrimitive_t *)
6032                 fw_event->event_data;
6033         u16 ioc_status;
6034         unsigned long flags;
6035         int r;
6036         u8 max_retries = 0;
6037         u8 task_abort_retries;
6038
6039         mutex_lock(&ioc->tm_cmds.mutex);
6040         pr_info(MPT3SAS_FMT
6041                 "%s: enter: phy number(%d), width(%d)\n",
6042                 ioc->name, __func__, event_data->PhyNum,
6043              event_data->PortWidth);
6044
6045         _scsih_block_io_all_device(ioc);
6046
6047         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6048         mpi_reply = ioc->tm_cmds.reply;
6049  broadcast_aen_retry:
6050
6051         /* sanity checks for retrying this loop */
6052         if (max_retries++ == 5) {
6053                 dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: giving up\n",
6054                     ioc->name, __func__));
6055                 goto out;
6056         } else if (max_retries > 1)
6057                 dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: %d retry\n",
6058                     ioc->name, __func__, max_retries - 1));
6059
6060         termination_count = 0;
6061         query_count = 0;
6062         for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
6063                 if (ioc->shost_recovery)
6064                         goto out;
6065                 scmd = _scsih_scsi_lookup_get(ioc, smid);
6066                 if (!scmd)
6067                         continue;
6068                 sdev = scmd->device;
6069                 sas_device_priv_data = sdev->hostdata;
6070                 if (!sas_device_priv_data || !sas_device_priv_data->sas_target)
6071                         continue;
6072                  /* skip hidden raid components */
6073                 if (sas_device_priv_data->sas_target->flags &
6074                     MPT_TARGET_FLAGS_RAID_COMPONENT)
6075                         continue;
6076                  /* skip volumes */
6077                 if (sas_device_priv_data->sas_target->flags &
6078                     MPT_TARGET_FLAGS_VOLUME)
6079                         continue;
6080
6081                 handle = sas_device_priv_data->sas_target->handle;
6082                 lun = sas_device_priv_data->lun;
6083                 query_count++;
6084
6085                 if (ioc->shost_recovery)
6086                         goto out;
6087
6088                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6089                 r = mpt3sas_scsih_issue_tm(ioc, handle, 0, 0, lun,
6090                     MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK, smid, 30,
6091                     TM_MUTEX_OFF);
6092                 if (r == FAILED) {
6093                         sdev_printk(KERN_WARNING, sdev,
6094                             "mpt3sas_scsih_issue_tm: FAILED when sending "
6095                             "QUERY_TASK: scmd(%p)\n", scmd);
6096                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6097                         goto broadcast_aen_retry;
6098                 }
6099                 ioc_status = le16_to_cpu(mpi_reply->IOCStatus)
6100                     & MPI2_IOCSTATUS_MASK;
6101                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6102                         sdev_printk(KERN_WARNING, sdev,
6103                                 "query task: FAILED with IOCSTATUS(0x%04x), scmd(%p)\n",
6104                                 ioc_status, scmd);
6105                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6106                         goto broadcast_aen_retry;
6107                 }
6108
6109                 /* see if IO is still owned by IOC and target */
6110                 if (mpi_reply->ResponseCode ==
6111                      MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED ||
6112                      mpi_reply->ResponseCode ==
6113                      MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC) {
6114                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6115                         continue;
6116                 }
6117                 task_abort_retries = 0;
6118  tm_retry:
6119                 if (task_abort_retries++ == 60) {
6120                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6121                             "%s: ABORT_TASK: giving up\n", ioc->name,
6122                             __func__));
6123                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6124                         goto broadcast_aen_retry;
6125                 }
6126
6127                 if (ioc->shost_recovery)
6128                         goto out_no_lock;
6129
6130                 r = mpt3sas_scsih_issue_tm(ioc, handle, sdev->channel, sdev->id,
6131                     sdev->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid, 30,
6132                     TM_MUTEX_OFF);
6133                 if (r == FAILED) {
6134                         sdev_printk(KERN_WARNING, sdev,
6135                             "mpt3sas_scsih_issue_tm: ABORT_TASK: FAILED : "
6136                             "scmd(%p)\n", scmd);
6137                         goto tm_retry;
6138                 }
6139
6140                 if (task_abort_retries > 1)
6141                         sdev_printk(KERN_WARNING, sdev,
6142                             "mpt3sas_scsih_issue_tm: ABORT_TASK: RETRIES (%d):"
6143                             " scmd(%p)\n",
6144                             task_abort_retries - 1, scmd);
6145
6146                 termination_count += le32_to_cpu(mpi_reply->TerminationCount);
6147                 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6148         }
6149
6150         if (ioc->broadcast_aen_pending) {
6151                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6152                         "%s: loop back due to pending AEN\n",
6153                         ioc->name, __func__));
6154                  ioc->broadcast_aen_pending = 0;
6155                  goto broadcast_aen_retry;
6156         }
6157
6158  out:
6159         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6160  out_no_lock:
6161
6162         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6163             "%s - exit, query_count = %d termination_count = %d\n",
6164             ioc->name, __func__, query_count, termination_count));
6165
6166         ioc->broadcast_aen_busy = 0;
6167         if (!ioc->shost_recovery)
6168                 _scsih_ublock_io_all_device(ioc);
6169         mutex_unlock(&ioc->tm_cmds.mutex);
6170 }
6171
6172 /**
6173  * _scsih_sas_discovery_event - handle discovery events
6174  * @ioc: per adapter object
6175  * @fw_event: The fw_event_work object
6176  * Context: user.
6177  *
6178  * Return nothing.
6179  */
6180 static void
6181 _scsih_sas_discovery_event(struct MPT3SAS_ADAPTER *ioc,
6182         struct fw_event_work *fw_event)
6183 {
6184         Mpi2EventDataSasDiscovery_t *event_data =
6185                 (Mpi2EventDataSasDiscovery_t *) fw_event->event_data;
6186
6187         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) {
6188                 pr_info(MPT3SAS_FMT "discovery event: (%s)", ioc->name,
6189                     (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
6190                     "start" : "stop");
6191                 if (event_data->DiscoveryStatus)
6192                         pr_info("discovery_status(0x%08x)",
6193                             le32_to_cpu(event_data->DiscoveryStatus));
6194                 pr_info("\n");
6195         }
6196
6197         if (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED &&
6198             !ioc->sas_hba.num_phys) {
6199                 if (disable_discovery > 0 && ioc->shost_recovery) {
6200                         /* Wait for the reset to complete */
6201                         while (ioc->shost_recovery)
6202                                 ssleep(1);
6203                 }
6204                 _scsih_sas_host_add(ioc);
6205         }
6206 }
6207
6208 /**
6209  * _scsih_ir_fastpath - turn on fastpath for IR physdisk
6210  * @ioc: per adapter object
6211  * @handle: device handle for physical disk
6212  * @phys_disk_num: physical disk number
6213  *
6214  * Return 0 for success, else failure.
6215  */
6216 static int
6217 _scsih_ir_fastpath(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phys_disk_num)
6218 {
6219         Mpi2RaidActionRequest_t *mpi_request;
6220         Mpi2RaidActionReply_t *mpi_reply;
6221         u16 smid;
6222         u8 issue_reset = 0;
6223         int rc = 0;
6224         u16 ioc_status;
6225         u32 log_info;
6226
6227         if (ioc->hba_mpi_version_belonged == MPI2_VERSION)
6228                 return rc;
6229
6230         mutex_lock(&ioc->scsih_cmds.mutex);
6231
6232         if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
6233                 pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
6234                     ioc->name, __func__);
6235                 rc = -EAGAIN;
6236                 goto out;
6237         }
6238         ioc->scsih_cmds.status = MPT3_CMD_PENDING;
6239
6240         smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
6241         if (!smid) {
6242                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
6243                     ioc->name, __func__);
6244                 ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6245                 rc = -EAGAIN;
6246                 goto out;
6247         }
6248
6249         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
6250         ioc->scsih_cmds.smid = smid;
6251         memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
6252
6253         mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
6254         mpi_request->Action = MPI2_RAID_ACTION_PHYSDISK_HIDDEN;
6255         mpi_request->PhysDiskNum = phys_disk_num;
6256
6257         dewtprintk(ioc, pr_info(MPT3SAS_FMT "IR RAID_ACTION: turning fast "\
6258             "path on for handle(0x%04x), phys_disk_num (0x%02x)\n", ioc->name,
6259             handle, phys_disk_num));
6260
6261         init_completion(&ioc->scsih_cmds.done);
6262         mpt3sas_base_put_smid_default(ioc, smid);
6263         wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
6264
6265         if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
6266                 pr_err(MPT3SAS_FMT "%s: timeout\n",
6267                     ioc->name, __func__);
6268                 if (!(ioc->scsih_cmds.status & MPT3_CMD_RESET))
6269                         issue_reset = 1;
6270                 rc = -EFAULT;
6271                 goto out;
6272         }
6273
6274         if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
6275
6276                 mpi_reply = ioc->scsih_cmds.reply;
6277                 ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
6278                 if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
6279                         log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
6280                 else
6281                         log_info = 0;
6282                 ioc_status &= MPI2_IOCSTATUS_MASK;
6283                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6284                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6285                             "IR RAID_ACTION: failed: ioc_status(0x%04x), "
6286                             "loginfo(0x%08x)!!!\n", ioc->name, ioc_status,
6287                             log_info));
6288                         rc = -EFAULT;
6289                 } else
6290                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6291                             "IR RAID_ACTION: completed successfully\n",
6292                             ioc->name));
6293         }
6294
6295  out:
6296         ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6297         mutex_unlock(&ioc->scsih_cmds.mutex);
6298
6299         if (issue_reset)
6300                 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
6301                     FORCE_BIG_HAMMER);
6302         return rc;
6303 }
6304
6305 /**
6306  * _scsih_reprobe_lun - reprobing lun
6307  * @sdev: scsi device struct
6308  * @no_uld_attach: sdev->no_uld_attach flag setting
6309  *
6310  **/
6311 static void
6312 _scsih_reprobe_lun(struct scsi_device *sdev, void *no_uld_attach)
6313 {
6314         int rc;
6315         sdev->no_uld_attach = no_uld_attach ? 1 : 0;
6316         sdev_printk(KERN_INFO, sdev, "%s raid component\n",
6317             sdev->no_uld_attach ? "hidding" : "exposing");
6318         rc = scsi_device_reprobe(sdev);
6319 }
6320
6321 /**
6322  * _scsih_sas_volume_add - add new volume
6323  * @ioc: per adapter object
6324  * @element: IR config element data
6325  * Context: user.
6326  *
6327  * Return nothing.
6328  */
6329 static void
6330 _scsih_sas_volume_add(struct MPT3SAS_ADAPTER *ioc,
6331         Mpi2EventIrConfigElement_t *element)
6332 {
6333         struct _raid_device *raid_device;
6334         unsigned long flags;
6335         u64 wwid;
6336         u16 handle = le16_to_cpu(element->VolDevHandle);
6337         int rc;
6338
6339         mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6340         if (!wwid) {
6341                 pr_err(MPT3SAS_FMT
6342                     "failure at %s:%d/%s()!\n", ioc->name,
6343                     __FILE__, __LINE__, __func__);
6344                 return;
6345         }
6346
6347         spin_lock_irqsave(&ioc->raid_device_lock, flags);
6348         raid_device = _scsih_raid_device_find_by_wwid(ioc, wwid);
6349         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6350
6351         if (raid_device)
6352                 return;
6353
6354         raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6355         if (!raid_device) {
6356                 pr_err(MPT3SAS_FMT
6357                     "failure at %s:%d/%s()!\n", ioc->name,
6358                     __FILE__, __LINE__, __func__);
6359                 return;
6360         }
6361
6362         raid_device->id = ioc->sas_id++;
6363         raid_device->channel = RAID_CHANNEL;
6364         raid_device->handle = handle;
6365         raid_device->wwid = wwid;
6366         _scsih_raid_device_add(ioc, raid_device);
6367         if (!ioc->wait_for_discovery_to_complete) {
6368                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6369                     raid_device->id, 0);
6370                 if (rc)
6371                         _scsih_raid_device_remove(ioc, raid_device);
6372         } else {
6373                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
6374                 _scsih_determine_boot_device(ioc, raid_device, 1);
6375                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6376         }
6377 }
6378
6379 /**
6380  * _scsih_sas_volume_delete - delete volume
6381  * @ioc: per adapter object
6382  * @handle: volume device handle
6383  * Context: user.
6384  *
6385  * Return nothing.
6386  */
6387 static void
6388 _scsih_sas_volume_delete(struct MPT3SAS_ADAPTER *ioc, u16 handle)
6389 {
6390         struct _raid_device *raid_device;
6391         unsigned long flags;
6392         struct MPT3SAS_TARGET *sas_target_priv_data;
6393         struct scsi_target *starget = NULL;
6394
6395         spin_lock_irqsave(&ioc->raid_device_lock, flags);
6396         raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6397         if (raid_device) {
6398                 if (raid_device->starget) {
6399                         starget = raid_device->starget;
6400                         sas_target_priv_data = starget->hostdata;
6401                         sas_target_priv_data->deleted = 1;
6402                 }
6403                 pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
6404                         ioc->name,  raid_device->handle,
6405                     (unsigned long long) raid_device->wwid);
6406                 list_del(&raid_device->list);
6407                 kfree(raid_device);
6408         }
6409         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6410         if (starget)
6411                 scsi_remove_target(&starget->dev);
6412 }
6413
6414 /**
6415  * _scsih_sas_pd_expose - expose pd component to /dev/sdX
6416  * @ioc: per adapter object
6417  * @element: IR config element data
6418  * Context: user.
6419  *
6420  * Return nothing.
6421  */
6422 static void
6423 _scsih_sas_pd_expose(struct MPT3SAS_ADAPTER *ioc,
6424         Mpi2EventIrConfigElement_t *element)
6425 {
6426         struct _sas_device *sas_device;
6427         struct scsi_target *starget = NULL;
6428         struct MPT3SAS_TARGET *sas_target_priv_data;
6429         unsigned long flags;
6430         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6431
6432         spin_lock_irqsave(&ioc->sas_device_lock, flags);
6433         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6434         if (sas_device) {
6435                 sas_device->volume_handle = 0;
6436                 sas_device->volume_wwid = 0;
6437                 clear_bit(handle, ioc->pd_handles);
6438                 if (sas_device->starget && sas_device->starget->hostdata) {
6439                         starget = sas_device->starget;
6440                         sas_target_priv_data = starget->hostdata;
6441                         sas_target_priv_data->flags &=
6442                             ~MPT_TARGET_FLAGS_RAID_COMPONENT;
6443                 }
6444         }
6445         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6446         if (!sas_device)
6447                 return;
6448
6449         /* exposing raid component */
6450         if (starget)
6451                 starget_for_each_device(starget, NULL, _scsih_reprobe_lun);
6452
6453         sas_device_put(sas_device);
6454 }
6455
6456 /**
6457  * _scsih_sas_pd_hide - hide pd component from /dev/sdX
6458  * @ioc: per adapter object
6459  * @element: IR config element data
6460  * Context: user.
6461  *
6462  * Return nothing.
6463  */
6464 static void
6465 _scsih_sas_pd_hide(struct MPT3SAS_ADAPTER *ioc,
6466         Mpi2EventIrConfigElement_t *element)
6467 {
6468         struct _sas_device *sas_device;
6469         struct scsi_target *starget = NULL;
6470         struct MPT3SAS_TARGET *sas_target_priv_data;
6471         unsigned long flags;
6472         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6473         u16 volume_handle = 0;
6474         u64 volume_wwid = 0;
6475
6476         mpt3sas_config_get_volume_handle(ioc, handle, &volume_handle);
6477         if (volume_handle)
6478                 mpt3sas_config_get_volume_wwid(ioc, volume_handle,
6479                     &volume_wwid);
6480
6481         spin_lock_irqsave(&ioc->sas_device_lock, flags);
6482         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6483         if (sas_device) {
6484                 set_bit(handle, ioc->pd_handles);
6485                 if (sas_device->starget && sas_device->starget->hostdata) {
6486                         starget = sas_device->starget;
6487                         sas_target_priv_data = starget->hostdata;
6488                         sas_target_priv_data->flags |=
6489                             MPT_TARGET_FLAGS_RAID_COMPONENT;
6490                         sas_device->volume_handle = volume_handle;
6491                         sas_device->volume_wwid = volume_wwid;
6492                 }
6493         }
6494         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6495         if (!sas_device)
6496                 return;
6497
6498         /* hiding raid component */
6499         _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6500
6501         if (starget)
6502                 starget_for_each_device(starget, (void *)1, _scsih_reprobe_lun);
6503
6504         sas_device_put(sas_device);
6505 }
6506
6507 /**
6508  * _scsih_sas_pd_delete - delete pd component
6509  * @ioc: per adapter object
6510  * @element: IR config element data
6511  * Context: user.
6512  *
6513  * Return nothing.
6514  */
6515 static void
6516 _scsih_sas_pd_delete(struct MPT3SAS_ADAPTER *ioc,
6517         Mpi2EventIrConfigElement_t *element)
6518 {
6519         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6520
6521         _scsih_device_remove_by_handle(ioc, handle);
6522 }
6523
6524 /**
6525  * _scsih_sas_pd_add - remove pd component
6526  * @ioc: per adapter object
6527  * @element: IR config element data
6528  * Context: user.
6529  *
6530  * Return nothing.
6531  */
6532 static void
6533 _scsih_sas_pd_add(struct MPT3SAS_ADAPTER *ioc,
6534         Mpi2EventIrConfigElement_t *element)
6535 {
6536         struct _sas_device *sas_device;
6537         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6538         Mpi2ConfigReply_t mpi_reply;
6539         Mpi2SasDevicePage0_t sas_device_pg0;
6540         u32 ioc_status;
6541         u64 sas_address;
6542         u16 parent_handle;
6543
6544         set_bit(handle, ioc->pd_handles);
6545
6546         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6547         if (sas_device) {
6548                 _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6549                 sas_device_put(sas_device);
6550                 return;
6551         }
6552
6553         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
6554             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
6555                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6556                     ioc->name, __FILE__, __LINE__, __func__);
6557                 return;
6558         }
6559
6560         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6561             MPI2_IOCSTATUS_MASK;
6562         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6563                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6564                     ioc->name, __FILE__, __LINE__, __func__);
6565                 return;
6566         }
6567
6568         parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6569         if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6570                 mpt3sas_transport_update_links(ioc, sas_address, handle,
6571                     sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6572
6573         _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6574         _scsih_add_device(ioc, handle, 0, 1);
6575 }
6576
6577 /**
6578  * _scsih_sas_ir_config_change_event_debug - debug for IR Config Change events
6579  * @ioc: per adapter object
6580  * @event_data: event data payload
6581  * Context: user.
6582  *
6583  * Return nothing.
6584  */
6585 static void
6586 _scsih_sas_ir_config_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
6587         Mpi2EventDataIrConfigChangeList_t *event_data)
6588 {
6589         Mpi2EventIrConfigElement_t *element;
6590         u8 element_type;
6591         int i;
6592         char *reason_str = NULL, *element_str = NULL;
6593
6594         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6595
6596         pr_info(MPT3SAS_FMT "raid config change: (%s), elements(%d)\n",
6597             ioc->name, (le32_to_cpu(event_data->Flags) &
6598             MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ?
6599             "foreign" : "native", event_data->NumElements);
6600         for (i = 0; i < event_data->NumElements; i++, element++) {
6601                 switch (element->ReasonCode) {
6602                 case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6603                         reason_str = "add";
6604                         break;
6605                 case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6606                         reason_str = "remove";
6607                         break;
6608                 case MPI2_EVENT_IR_CHANGE_RC_NO_CHANGE:
6609                         reason_str = "no change";
6610                         break;
6611                 case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6612                         reason_str = "hide";
6613                         break;
6614                 case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6615                         reason_str = "unhide";
6616                         break;
6617                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6618                         reason_str = "volume_created";
6619                         break;
6620                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6621                         reason_str = "volume_deleted";
6622                         break;
6623                 case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6624                         reason_str = "pd_created";
6625                         break;
6626                 case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6627                         reason_str = "pd_deleted";
6628                         break;
6629                 default:
6630                         reason_str = "unknown reason";
6631                         break;
6632                 }
6633                 element_type = le16_to_cpu(element->ElementFlags) &
6634                     MPI2_EVENT_IR_CHANGE_EFLAGS_ELEMENT_TYPE_MASK;
6635                 switch (element_type) {
6636                 case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLUME_ELEMENT:
6637                         element_str = "volume";
6638                         break;
6639                 case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLPHYSDISK_ELEMENT:
6640                         element_str = "phys disk";
6641                         break;
6642                 case MPI2_EVENT_IR_CHANGE_EFLAGS_HOTSPARE_ELEMENT:
6643                         element_str = "hot spare";
6644                         break;
6645                 default:
6646                         element_str = "unknown element";
6647                         break;
6648                 }
6649                 pr_info("\t(%s:%s), vol handle(0x%04x), " \
6650                     "pd handle(0x%04x), pd num(0x%02x)\n", element_str,
6651                     reason_str, le16_to_cpu(element->VolDevHandle),
6652                     le16_to_cpu(element->PhysDiskDevHandle),
6653                     element->PhysDiskNum);
6654         }
6655 }
6656
6657 /**
6658  * _scsih_sas_ir_config_change_event - handle ir configuration change events
6659  * @ioc: per adapter object
6660  * @fw_event: The fw_event_work object
6661  * Context: user.
6662  *
6663  * Return nothing.
6664  */
6665 static void
6666 _scsih_sas_ir_config_change_event(struct MPT3SAS_ADAPTER *ioc,
6667         struct fw_event_work *fw_event)
6668 {
6669         Mpi2EventIrConfigElement_t *element;
6670         int i;
6671         u8 foreign_config;
6672         Mpi2EventDataIrConfigChangeList_t *event_data =
6673                 (Mpi2EventDataIrConfigChangeList_t *)
6674                 fw_event->event_data;
6675
6676         if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
6677              (!ioc->hide_ir_msg))
6678                 _scsih_sas_ir_config_change_event_debug(ioc, event_data);
6679
6680         foreign_config = (le32_to_cpu(event_data->Flags) &
6681             MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ? 1 : 0;
6682
6683         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6684         if (ioc->shost_recovery &&
6685             ioc->hba_mpi_version_belonged != MPI2_VERSION) {
6686                 for (i = 0; i < event_data->NumElements; i++, element++) {
6687                         if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_HIDE)
6688                                 _scsih_ir_fastpath(ioc,
6689                                         le16_to_cpu(element->PhysDiskDevHandle),
6690                                         element->PhysDiskNum);
6691                 }
6692                 return;
6693         }
6694
6695         for (i = 0; i < event_data->NumElements; i++, element++) {
6696
6697                 switch (element->ReasonCode) {
6698                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6699                 case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6700                         if (!foreign_config)
6701                                 _scsih_sas_volume_add(ioc, element);
6702                         break;
6703                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6704                 case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6705                         if (!foreign_config)
6706                                 _scsih_sas_volume_delete(ioc,
6707                                     le16_to_cpu(element->VolDevHandle));
6708                         break;
6709                 case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6710                         if (!ioc->is_warpdrive)
6711                                 _scsih_sas_pd_hide(ioc, element);
6712                         break;
6713                 case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6714                         if (!ioc->is_warpdrive)
6715                                 _scsih_sas_pd_expose(ioc, element);
6716                         break;
6717                 case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6718                         if (!ioc->is_warpdrive)
6719                                 _scsih_sas_pd_add(ioc, element);
6720                         break;
6721                 case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6722                         if (!ioc->is_warpdrive)
6723                                 _scsih_sas_pd_delete(ioc, element);
6724                         break;
6725                 }
6726         }
6727 }
6728
6729 /**
6730  * _scsih_sas_ir_volume_event - IR volume event
6731  * @ioc: per adapter object
6732  * @fw_event: The fw_event_work object
6733  * Context: user.
6734  *
6735  * Return nothing.
6736  */
6737 static void
6738 _scsih_sas_ir_volume_event(struct MPT3SAS_ADAPTER *ioc,
6739         struct fw_event_work *fw_event)
6740 {
6741         u64 wwid;
6742         unsigned long flags;
6743         struct _raid_device *raid_device;
6744         u16 handle;
6745         u32 state;
6746         int rc;
6747         Mpi2EventDataIrVolume_t *event_data =
6748                 (Mpi2EventDataIrVolume_t *) fw_event->event_data;
6749
6750         if (ioc->shost_recovery)
6751                 return;
6752
6753         if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
6754                 return;
6755
6756         handle = le16_to_cpu(event_data->VolDevHandle);
6757         state = le32_to_cpu(event_data->NewValue);
6758         if (!ioc->hide_ir_msg)
6759                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6760                     "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6761                     ioc->name, __func__,  handle,
6762                     le32_to_cpu(event_data->PreviousValue), state));
6763         switch (state) {
6764         case MPI2_RAID_VOL_STATE_MISSING:
6765         case MPI2_RAID_VOL_STATE_FAILED:
6766                 _scsih_sas_volume_delete(ioc, handle);
6767                 break;
6768
6769         case MPI2_RAID_VOL_STATE_ONLINE:
6770         case MPI2_RAID_VOL_STATE_DEGRADED:
6771         case MPI2_RAID_VOL_STATE_OPTIMAL:
6772
6773                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
6774                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6775                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6776
6777                 if (raid_device)
6778                         break;
6779
6780                 mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6781                 if (!wwid) {
6782                         pr_err(MPT3SAS_FMT
6783                             "failure at %s:%d/%s()!\n", ioc->name,
6784                             __FILE__, __LINE__, __func__);
6785                         break;
6786                 }
6787
6788                 raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6789                 if (!raid_device) {
6790                         pr_err(MPT3SAS_FMT
6791                             "failure at %s:%d/%s()!\n", ioc->name,
6792                             __FILE__, __LINE__, __func__);
6793                         break;
6794                 }
6795
6796                 raid_device->id = ioc->sas_id++;
6797                 raid_device->channel = RAID_CHANNEL;
6798                 raid_device->handle = handle;
6799                 raid_device->wwid = wwid;
6800                 _scsih_raid_device_add(ioc, raid_device);
6801                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6802                     raid_device->id, 0);
6803                 if (rc)
6804                         _scsih_raid_device_remove(ioc, raid_device);
6805                 break;
6806
6807         case MPI2_RAID_VOL_STATE_INITIALIZING:
6808         default:
6809                 break;
6810         }
6811 }
6812
6813 /**
6814  * _scsih_sas_ir_physical_disk_event - PD event
6815  * @ioc: per adapter object
6816  * @fw_event: The fw_event_work object
6817  * Context: user.
6818  *
6819  * Return nothing.
6820  */
6821 static void
6822 _scsih_sas_ir_physical_disk_event(struct MPT3SAS_ADAPTER *ioc,
6823         struct fw_event_work *fw_event)
6824 {
6825         u16 handle, parent_handle;
6826         u32 state;
6827         struct _sas_device *sas_device;
6828         Mpi2ConfigReply_t mpi_reply;
6829         Mpi2SasDevicePage0_t sas_device_pg0;
6830         u32 ioc_status;
6831         Mpi2EventDataIrPhysicalDisk_t *event_data =
6832                 (Mpi2EventDataIrPhysicalDisk_t *) fw_event->event_data;
6833         u64 sas_address;
6834
6835         if (ioc->shost_recovery)
6836                 return;
6837
6838         if (event_data->ReasonCode != MPI2_EVENT_IR_PHYSDISK_RC_STATE_CHANGED)
6839                 return;
6840
6841         handle = le16_to_cpu(event_data->PhysDiskDevHandle);
6842         state = le32_to_cpu(event_data->NewValue);
6843
6844         if (!ioc->hide_ir_msg)
6845                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6846                     "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6847                     ioc->name, __func__,  handle,
6848                     le32_to_cpu(event_data->PreviousValue), state));
6849
6850         switch (state) {
6851         case MPI2_RAID_PD_STATE_ONLINE:
6852         case MPI2_RAID_PD_STATE_DEGRADED:
6853         case MPI2_RAID_PD_STATE_REBUILDING:
6854         case MPI2_RAID_PD_STATE_OPTIMAL:
6855         case MPI2_RAID_PD_STATE_HOT_SPARE:
6856
6857                 if (!ioc->is_warpdrive)
6858                         set_bit(handle, ioc->pd_handles);
6859
6860                 sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6861                 if (sas_device) {
6862                         sas_device_put(sas_device);
6863                         return;
6864                 }
6865
6866                 if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
6867                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
6868                     handle))) {
6869                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6870                             ioc->name, __FILE__, __LINE__, __func__);
6871                         return;
6872                 }
6873
6874                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6875                     MPI2_IOCSTATUS_MASK;
6876                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6877                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6878                             ioc->name, __FILE__, __LINE__, __func__);
6879                         return;
6880                 }
6881
6882                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6883                 if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6884                         mpt3sas_transport_update_links(ioc, sas_address, handle,
6885                             sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6886
6887                 _scsih_add_device(ioc, handle, 0, 1);
6888
6889                 break;
6890
6891         case MPI2_RAID_PD_STATE_OFFLINE:
6892         case MPI2_RAID_PD_STATE_NOT_CONFIGURED:
6893         case MPI2_RAID_PD_STATE_NOT_COMPATIBLE:
6894         default:
6895                 break;
6896         }
6897 }
6898
6899 /**
6900  * _scsih_sas_ir_operation_status_event_debug - debug for IR op event
6901  * @ioc: per adapter object
6902  * @event_data: event data payload
6903  * Context: user.
6904  *
6905  * Return nothing.
6906  */
6907 static void
6908 _scsih_sas_ir_operation_status_event_debug(struct MPT3SAS_ADAPTER *ioc,
6909         Mpi2EventDataIrOperationStatus_t *event_data)
6910 {
6911         char *reason_str = NULL;
6912
6913         switch (event_data->RAIDOperation) {
6914         case MPI2_EVENT_IR_RAIDOP_RESYNC:
6915                 reason_str = "resync";
6916                 break;
6917         case MPI2_EVENT_IR_RAIDOP_ONLINE_CAP_EXPANSION:
6918                 reason_str = "online capacity expansion";
6919                 break;
6920         case MPI2_EVENT_IR_RAIDOP_CONSISTENCY_CHECK:
6921                 reason_str = "consistency check";
6922                 break;
6923         case MPI2_EVENT_IR_RAIDOP_BACKGROUND_INIT:
6924                 reason_str = "background init";
6925                 break;
6926         case MPI2_EVENT_IR_RAIDOP_MAKE_DATA_CONSISTENT:
6927                 reason_str = "make data consistent";
6928                 break;
6929         }
6930
6931         if (!reason_str)
6932                 return;
6933
6934         pr_info(MPT3SAS_FMT "raid operational status: (%s)" \
6935             "\thandle(0x%04x), percent complete(%d)\n",
6936             ioc->name, reason_str,
6937             le16_to_cpu(event_data->VolDevHandle),
6938             event_data->PercentComplete);
6939 }
6940
6941 /**
6942  * _scsih_sas_ir_operation_status_event - handle RAID operation events
6943  * @ioc: per adapter object
6944  * @fw_event: The fw_event_work object
6945  * Context: user.
6946  *
6947  * Return nothing.
6948  */
6949 static void
6950 _scsih_sas_ir_operation_status_event(struct MPT3SAS_ADAPTER *ioc,
6951         struct fw_event_work *fw_event)
6952 {
6953         Mpi2EventDataIrOperationStatus_t *event_data =
6954                 (Mpi2EventDataIrOperationStatus_t *)
6955                 fw_event->event_data;
6956         static struct _raid_device *raid_device;
6957         unsigned long flags;
6958         u16 handle;
6959
6960         if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
6961             (!ioc->hide_ir_msg))
6962                 _scsih_sas_ir_operation_status_event_debug(ioc,
6963                      event_data);
6964
6965         /* code added for raid transport support */
6966         if (event_data->RAIDOperation == MPI2_EVENT_IR_RAIDOP_RESYNC) {
6967
6968                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
6969                 handle = le16_to_cpu(event_data->VolDevHandle);
6970                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6971                 if (raid_device)
6972                         raid_device->percent_complete =
6973                             event_data->PercentComplete;
6974                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6975         }
6976 }
6977
6978 /**
6979  * _scsih_prep_device_scan - initialize parameters prior to device scan
6980  * @ioc: per adapter object
6981  *
6982  * Set the deleted flag prior to device scan.  If the device is found during
6983  * the scan, then we clear the deleted flag.
6984  */
6985 static void
6986 _scsih_prep_device_scan(struct MPT3SAS_ADAPTER *ioc)
6987 {
6988         struct MPT3SAS_DEVICE *sas_device_priv_data;
6989         struct scsi_device *sdev;
6990
6991         shost_for_each_device(sdev, ioc->shost) {
6992                 sas_device_priv_data = sdev->hostdata;
6993                 if (sas_device_priv_data && sas_device_priv_data->sas_target)
6994                         sas_device_priv_data->sas_target->deleted = 1;
6995         }
6996 }
6997
6998 /**
6999  * _scsih_mark_responding_sas_device - mark a sas_devices as responding
7000  * @ioc: per adapter object
7001  * @sas_device_pg0: SAS Device page 0
7002  *
7003  * After host reset, find out whether devices are still responding.
7004  * Used in _scsih_remove_unresponsive_sas_devices.
7005  *
7006  * Return nothing.
7007  */
7008 static void
7009 _scsih_mark_responding_sas_device(struct MPT3SAS_ADAPTER *ioc,
7010 Mpi2SasDevicePage0_t *sas_device_pg0)
7011 {
7012         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7013         struct scsi_target *starget;
7014         struct _sas_device *sas_device;
7015         unsigned long flags;
7016
7017         spin_lock_irqsave(&ioc->sas_device_lock, flags);
7018         list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
7019                 if ((sas_device->sas_address == sas_device_pg0->SASAddress) &&
7020                         (sas_device->slot == sas_device_pg0->Slot)) {
7021                         sas_device->responding = 1;
7022                         starget = sas_device->starget;
7023                         if (starget && starget->hostdata) {
7024                                 sas_target_priv_data = starget->hostdata;
7025                                 sas_target_priv_data->tm_busy = 0;
7026                                 sas_target_priv_data->deleted = 0;
7027                         } else
7028                                 sas_target_priv_data = NULL;
7029                         if (starget) {
7030                                 starget_printk(KERN_INFO, starget,
7031                                     "handle(0x%04x), sas_addr(0x%016llx)\n",
7032                                     sas_device_pg0->DevHandle,
7033                                     (unsigned long long)
7034                                     sas_device->sas_address);
7035
7036                                 if (sas_device->enclosure_handle != 0)
7037                                         starget_printk(KERN_INFO, starget,
7038                                          "enclosure logical id(0x%016llx),"
7039                                          " slot(%d)\n",
7040                                          (unsigned long long)
7041                                          sas_device->enclosure_logical_id,
7042                                          sas_device->slot);
7043                         }
7044                         if (sas_device_pg0->Flags &
7045                               MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
7046                                 sas_device->enclosure_level =
7047                                    le16_to_cpu(sas_device_pg0->EnclosureLevel);
7048                                 memcpy(&sas_device->connector_name[0],
7049                                         &sas_device_pg0->ConnectorName[0], 4);
7050                         } else {
7051                                 sas_device->enclosure_level = 0;
7052                                 sas_device->connector_name[0] = '\0';
7053                         }
7054
7055                         if (sas_device->handle == sas_device_pg0->DevHandle)
7056                                 goto out;
7057                         pr_info("\thandle changed from(0x%04x)!!!\n",
7058                             sas_device->handle);
7059                         sas_device->handle = sas_device_pg0->DevHandle;
7060                         if (sas_target_priv_data)
7061                                 sas_target_priv_data->handle =
7062                                         sas_device_pg0->DevHandle;
7063                         goto out;
7064                 }
7065         }
7066  out:
7067         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7068 }
7069
7070 /**
7071  * _scsih_search_responding_sas_devices -
7072  * @ioc: per adapter object
7073  *
7074  * After host reset, find out whether devices are still responding.
7075  * If not remove.
7076  *
7077  * Return nothing.
7078  */
7079 static void
7080 _scsih_search_responding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7081 {
7082         Mpi2SasDevicePage0_t sas_device_pg0;
7083         Mpi2ConfigReply_t mpi_reply;
7084         u16 ioc_status;
7085         u16 handle;
7086         u32 device_info;
7087
7088         pr_info(MPT3SAS_FMT "search for end-devices: start\n", ioc->name);
7089
7090         if (list_empty(&ioc->sas_device_list))
7091                 goto out;
7092
7093         handle = 0xFFFF;
7094         while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7095             &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7096             handle))) {
7097                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7098                     MPI2_IOCSTATUS_MASK;
7099                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7100                         break;
7101                 handle = sas_device_pg0.DevHandle =
7102                                 le16_to_cpu(sas_device_pg0.DevHandle);
7103                 device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
7104                 if (!(_scsih_is_end_device(device_info)))
7105                         continue;
7106                 sas_device_pg0.SASAddress =
7107                                 le64_to_cpu(sas_device_pg0.SASAddress);
7108                 sas_device_pg0.Slot = le16_to_cpu(sas_device_pg0.Slot);
7109                 _scsih_mark_responding_sas_device(ioc, &sas_device_pg0);
7110         }
7111
7112  out:
7113         pr_info(MPT3SAS_FMT "search for end-devices: complete\n",
7114             ioc->name);
7115 }
7116
7117 /**
7118  * _scsih_mark_responding_raid_device - mark a raid_device as responding
7119  * @ioc: per adapter object
7120  * @wwid: world wide identifier for raid volume
7121  * @handle: device handle
7122  *
7123  * After host reset, find out whether devices are still responding.
7124  * Used in _scsih_remove_unresponsive_raid_devices.
7125  *
7126  * Return nothing.
7127  */
7128 static void
7129 _scsih_mark_responding_raid_device(struct MPT3SAS_ADAPTER *ioc, u64 wwid,
7130         u16 handle)
7131 {
7132         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7133         struct scsi_target *starget;
7134         struct _raid_device *raid_device;
7135         unsigned long flags;
7136
7137         spin_lock_irqsave(&ioc->raid_device_lock, flags);
7138         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
7139                 if (raid_device->wwid == wwid && raid_device->starget) {
7140                         starget = raid_device->starget;
7141                         if (starget && starget->hostdata) {
7142                                 sas_target_priv_data = starget->hostdata;
7143                                 sas_target_priv_data->deleted = 0;
7144                         } else
7145                                 sas_target_priv_data = NULL;
7146                         raid_device->responding = 1;
7147                         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7148                         starget_printk(KERN_INFO, raid_device->starget,
7149                             "handle(0x%04x), wwid(0x%016llx)\n", handle,
7150                             (unsigned long long)raid_device->wwid);
7151
7152                         /*
7153                          * WARPDRIVE: The handles of the PDs might have changed
7154                          * across the host reset so re-initialize the
7155                          * required data for Direct IO
7156                          */
7157                         mpt3sas_init_warpdrive_properties(ioc, raid_device);
7158                         spin_lock_irqsave(&ioc->raid_device_lock, flags);
7159                         if (raid_device->handle == handle) {
7160                                 spin_unlock_irqrestore(&ioc->raid_device_lock,
7161                                     flags);
7162                                 return;
7163                         }
7164                         pr_info("\thandle changed from(0x%04x)!!!\n",
7165                             raid_device->handle);
7166                         raid_device->handle = handle;
7167                         if (sas_target_priv_data)
7168                                 sas_target_priv_data->handle = handle;
7169                         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7170                         return;
7171                 }
7172         }
7173         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7174 }
7175
7176 /**
7177  * _scsih_search_responding_raid_devices -
7178  * @ioc: per adapter object
7179  *
7180  * After host reset, find out whether devices are still responding.
7181  * If not remove.
7182  *
7183  * Return nothing.
7184  */
7185 static void
7186 _scsih_search_responding_raid_devices(struct MPT3SAS_ADAPTER *ioc)
7187 {
7188         Mpi2RaidVolPage1_t volume_pg1;
7189         Mpi2RaidVolPage0_t volume_pg0;
7190         Mpi2RaidPhysDiskPage0_t pd_pg0;
7191         Mpi2ConfigReply_t mpi_reply;
7192         u16 ioc_status;
7193         u16 handle;
7194         u8 phys_disk_num;
7195
7196         if (!ioc->ir_firmware)
7197                 return;
7198
7199         pr_info(MPT3SAS_FMT "search for raid volumes: start\n",
7200             ioc->name);
7201
7202         if (list_empty(&ioc->raid_device_list))
7203                 goto out;
7204
7205         handle = 0xFFFF;
7206         while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7207             &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7208                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7209                     MPI2_IOCSTATUS_MASK;
7210                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7211                         break;
7212                 handle = le16_to_cpu(volume_pg1.DevHandle);
7213
7214                 if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7215                     &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7216                      sizeof(Mpi2RaidVolPage0_t)))
7217                         continue;
7218
7219                 if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7220                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7221                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED)
7222                         _scsih_mark_responding_raid_device(ioc,
7223                             le64_to_cpu(volume_pg1.WWID), handle);
7224         }
7225
7226         /* refresh the pd_handles */
7227         if (!ioc->is_warpdrive) {
7228                 phys_disk_num = 0xFF;
7229                 memset(ioc->pd_handles, 0, ioc->pd_handles_sz);
7230                 while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7231                     &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7232                     phys_disk_num))) {
7233                         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7234                             MPI2_IOCSTATUS_MASK;
7235                         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7236                                 break;
7237                         phys_disk_num = pd_pg0.PhysDiskNum;
7238                         handle = le16_to_cpu(pd_pg0.DevHandle);
7239                         set_bit(handle, ioc->pd_handles);
7240                 }
7241         }
7242  out:
7243         pr_info(MPT3SAS_FMT "search for responding raid volumes: complete\n",
7244                 ioc->name);
7245 }
7246
7247 /**
7248  * _scsih_mark_responding_expander - mark a expander as responding
7249  * @ioc: per adapter object
7250  * @sas_address: sas address
7251  * @handle:
7252  *
7253  * After host reset, find out whether devices are still responding.
7254  * Used in _scsih_remove_unresponsive_expanders.
7255  *
7256  * Return nothing.
7257  */
7258 static void
7259 _scsih_mark_responding_expander(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
7260         u16 handle)
7261 {
7262         struct _sas_node *sas_expander;
7263         unsigned long flags;
7264         int i;
7265
7266         spin_lock_irqsave(&ioc->sas_node_lock, flags);
7267         list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
7268                 if (sas_expander->sas_address != sas_address)
7269                         continue;
7270                 sas_expander->responding = 1;
7271                 if (sas_expander->handle == handle)
7272                         goto out;
7273                 pr_info("\texpander(0x%016llx): handle changed" \
7274                     " from(0x%04x) to (0x%04x)!!!\n",
7275                     (unsigned long long)sas_expander->sas_address,
7276                     sas_expander->handle, handle);
7277                 sas_expander->handle = handle;
7278                 for (i = 0 ; i < sas_expander->num_phys ; i++)
7279                         sas_expander->phy[i].handle = handle;
7280                 goto out;
7281         }
7282  out:
7283         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7284 }
7285
7286 /**
7287  * _scsih_search_responding_expanders -
7288  * @ioc: per adapter object
7289  *
7290  * After host reset, find out whether devices are still responding.
7291  * If not remove.
7292  *
7293  * Return nothing.
7294  */
7295 static void
7296 _scsih_search_responding_expanders(struct MPT3SAS_ADAPTER *ioc)
7297 {
7298         Mpi2ExpanderPage0_t expander_pg0;
7299         Mpi2ConfigReply_t mpi_reply;
7300         u16 ioc_status;
7301         u64 sas_address;
7302         u16 handle;
7303
7304         pr_info(MPT3SAS_FMT "search for expanders: start\n", ioc->name);
7305
7306         if (list_empty(&ioc->sas_expander_list))
7307                 goto out;
7308
7309         handle = 0xFFFF;
7310         while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7311             MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7312
7313                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7314                     MPI2_IOCSTATUS_MASK;
7315                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7316                         break;
7317
7318                 handle = le16_to_cpu(expander_pg0.DevHandle);
7319                 sas_address = le64_to_cpu(expander_pg0.SASAddress);
7320                 pr_info("\texpander present: handle(0x%04x), sas_addr(0x%016llx)\n",
7321                         handle,
7322                     (unsigned long long)sas_address);
7323                 _scsih_mark_responding_expander(ioc, sas_address, handle);
7324         }
7325
7326  out:
7327         pr_info(MPT3SAS_FMT "search for expanders: complete\n", ioc->name);
7328 }
7329
7330 /**
7331  * _scsih_remove_unresponding_sas_devices - removing unresponding devices
7332  * @ioc: per adapter object
7333  *
7334  * Return nothing.
7335  */
7336 static void
7337 _scsih_remove_unresponding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7338 {
7339         struct _sas_device *sas_device, *sas_device_next;
7340         struct _sas_node *sas_expander, *sas_expander_next;
7341         struct _raid_device *raid_device, *raid_device_next;
7342         struct list_head tmp_list;
7343         unsigned long flags;
7344         LIST_HEAD(head);
7345
7346         pr_info(MPT3SAS_FMT "removing unresponding devices: start\n",
7347             ioc->name);
7348
7349         /* removing unresponding end devices */
7350         pr_info(MPT3SAS_FMT "removing unresponding devices: end-devices\n",
7351             ioc->name);
7352         /*
7353          * Iterate, pulling off devices marked as non-responding. We become the
7354          * owner for the reference the list had on any object we prune.
7355          */
7356         spin_lock_irqsave(&ioc->sas_device_lock, flags);
7357         list_for_each_entry_safe(sas_device, sas_device_next,
7358             &ioc->sas_device_list, list) {
7359                 if (!sas_device->responding)
7360                         list_move_tail(&sas_device->list, &head);
7361                 else
7362                         sas_device->responding = 0;
7363         }
7364         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7365
7366         /*
7367          * Now, uninitialize and remove the unresponding devices we pruned.
7368          */
7369         list_for_each_entry_safe(sas_device, sas_device_next, &head, list) {
7370                 _scsih_remove_device(ioc, sas_device);
7371                 list_del_init(&sas_device->list);
7372                 sas_device_put(sas_device);
7373         }
7374
7375         /* removing unresponding volumes */
7376         if (ioc->ir_firmware) {
7377                 pr_info(MPT3SAS_FMT "removing unresponding devices: volumes\n",
7378                         ioc->name);
7379                 list_for_each_entry_safe(raid_device, raid_device_next,
7380                     &ioc->raid_device_list, list) {
7381                         if (!raid_device->responding)
7382                                 _scsih_sas_volume_delete(ioc,
7383                                     raid_device->handle);
7384                         else
7385                                 raid_device->responding = 0;
7386                 }
7387         }
7388
7389         /* removing unresponding expanders */
7390         pr_info(MPT3SAS_FMT "removing unresponding devices: expanders\n",
7391             ioc->name);
7392         spin_lock_irqsave(&ioc->sas_node_lock, flags);
7393         INIT_LIST_HEAD(&tmp_list);
7394         list_for_each_entry_safe(sas_expander, sas_expander_next,
7395             &ioc->sas_expander_list, list) {
7396                 if (!sas_expander->responding)
7397                         list_move_tail(&sas_expander->list, &tmp_list);
7398                 else
7399                         sas_expander->responding = 0;
7400         }
7401         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7402         list_for_each_entry_safe(sas_expander, sas_expander_next, &tmp_list,
7403             list) {
7404                 list_del(&sas_expander->list);
7405                 _scsih_expander_node_remove(ioc, sas_expander);
7406         }
7407
7408         pr_info(MPT3SAS_FMT "removing unresponding devices: complete\n",
7409             ioc->name);
7410
7411         /* unblock devices */
7412         _scsih_ublock_io_all_device(ioc);
7413 }
7414
7415 static void
7416 _scsih_refresh_expander_links(struct MPT3SAS_ADAPTER *ioc,
7417         struct _sas_node *sas_expander, u16 handle)
7418 {
7419         Mpi2ExpanderPage1_t expander_pg1;
7420         Mpi2ConfigReply_t mpi_reply;
7421         int i;
7422
7423         for (i = 0 ; i < sas_expander->num_phys ; i++) {
7424                 if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
7425                     &expander_pg1, i, handle))) {
7426                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
7427                             ioc->name, __FILE__, __LINE__, __func__);
7428                         return;
7429                 }
7430
7431                 mpt3sas_transport_update_links(ioc, sas_expander->sas_address,
7432                     le16_to_cpu(expander_pg1.AttachedDevHandle), i,
7433                     expander_pg1.NegotiatedLinkRate >> 4);
7434         }
7435 }
7436
7437 /**
7438  * _scsih_scan_for_devices_after_reset - scan for devices after host reset
7439  * @ioc: per adapter object
7440  *
7441  * Return nothing.
7442  */
7443 static void
7444 _scsih_scan_for_devices_after_reset(struct MPT3SAS_ADAPTER *ioc)
7445 {
7446         Mpi2ExpanderPage0_t expander_pg0;
7447         Mpi2SasDevicePage0_t sas_device_pg0;
7448         Mpi2RaidVolPage1_t volume_pg1;
7449         Mpi2RaidVolPage0_t volume_pg0;
7450         Mpi2RaidPhysDiskPage0_t pd_pg0;
7451         Mpi2EventIrConfigElement_t element;
7452         Mpi2ConfigReply_t mpi_reply;
7453         u8 phys_disk_num;
7454         u16 ioc_status;
7455         u16 handle, parent_handle;
7456         u64 sas_address;
7457         struct _sas_device *sas_device;
7458         struct _sas_node *expander_device;
7459         static struct _raid_device *raid_device;
7460         u8 retry_count;
7461         unsigned long flags;
7462
7463         pr_info(MPT3SAS_FMT "scan devices: start\n", ioc->name);
7464
7465         _scsih_sas_host_refresh(ioc);
7466
7467         pr_info(MPT3SAS_FMT "\tscan devices: expanders start\n", ioc->name);
7468
7469         /* expanders */
7470         handle = 0xFFFF;
7471         while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7472             MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7473                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7474                     MPI2_IOCSTATUS_MASK;
7475                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7476                         pr_info(MPT3SAS_FMT "\tbreak from expander scan: " \
7477                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7478                             ioc->name, ioc_status,
7479                             le32_to_cpu(mpi_reply.IOCLogInfo));
7480                         break;
7481                 }
7482                 handle = le16_to_cpu(expander_pg0.DevHandle);
7483                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
7484                 expander_device = mpt3sas_scsih_expander_find_by_sas_address(
7485                     ioc, le64_to_cpu(expander_pg0.SASAddress));
7486                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7487                 if (expander_device)
7488                         _scsih_refresh_expander_links(ioc, expander_device,
7489                             handle);
7490                 else {
7491                         pr_info(MPT3SAS_FMT "\tBEFORE adding expander: " \
7492                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7493                             handle, (unsigned long long)
7494                             le64_to_cpu(expander_pg0.SASAddress));
7495                         _scsih_expander_add(ioc, handle);
7496                         pr_info(MPT3SAS_FMT "\tAFTER adding expander: " \
7497                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7498                             handle, (unsigned long long)
7499                             le64_to_cpu(expander_pg0.SASAddress));
7500                 }
7501         }
7502
7503         pr_info(MPT3SAS_FMT "\tscan devices: expanders complete\n",
7504             ioc->name);
7505
7506         if (!ioc->ir_firmware)
7507                 goto skip_to_sas;
7508
7509         pr_info(MPT3SAS_FMT "\tscan devices: phys disk start\n", ioc->name);
7510
7511         /* phys disk */
7512         phys_disk_num = 0xFF;
7513         while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7514             &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7515             phys_disk_num))) {
7516                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7517                     MPI2_IOCSTATUS_MASK;
7518                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7519                         pr_info(MPT3SAS_FMT "\tbreak from phys disk scan: "\
7520                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7521                             ioc->name, ioc_status,
7522                             le32_to_cpu(mpi_reply.IOCLogInfo));
7523                         break;
7524                 }
7525                 phys_disk_num = pd_pg0.PhysDiskNum;
7526                 handle = le16_to_cpu(pd_pg0.DevHandle);
7527                 sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
7528                 if (sas_device) {
7529                         sas_device_put(sas_device);
7530                         continue;
7531                 }
7532                 if (mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7533                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
7534                     handle) != 0)
7535                         continue;
7536                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7537                     MPI2_IOCSTATUS_MASK;
7538                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7539                         pr_info(MPT3SAS_FMT "\tbreak from phys disk scan " \
7540                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7541                             ioc->name, ioc_status,
7542                             le32_to_cpu(mpi_reply.IOCLogInfo));
7543                         break;
7544                 }
7545                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7546                 if (!_scsih_get_sas_address(ioc, parent_handle,
7547                     &sas_address)) {
7548                         pr_info(MPT3SAS_FMT "\tBEFORE adding phys disk: " \
7549                             " handle (0x%04x), sas_addr(0x%016llx)\n",
7550                             ioc->name, handle, (unsigned long long)
7551                             le64_to_cpu(sas_device_pg0.SASAddress));
7552                         mpt3sas_transport_update_links(ioc, sas_address,
7553                             handle, sas_device_pg0.PhyNum,
7554                             MPI2_SAS_NEG_LINK_RATE_1_5);
7555                         set_bit(handle, ioc->pd_handles);
7556                         retry_count = 0;
7557                         /* This will retry adding the end device.
7558                          * _scsih_add_device() will decide on retries and
7559                          * return "1" when it should be retried
7560                          */
7561                         while (_scsih_add_device(ioc, handle, retry_count++,
7562                             1)) {
7563                                 ssleep(1);
7564                         }
7565                         pr_info(MPT3SAS_FMT "\tAFTER adding phys disk: " \
7566                             " handle (0x%04x), sas_addr(0x%016llx)\n",
7567                             ioc->name, handle, (unsigned long long)
7568                             le64_to_cpu(sas_device_pg0.SASAddress));
7569                 }
7570         }
7571
7572         pr_info(MPT3SAS_FMT "\tscan devices: phys disk complete\n",
7573             ioc->name);
7574
7575         pr_info(MPT3SAS_FMT "\tscan devices: volumes start\n", ioc->name);
7576
7577         /* volumes */
7578         handle = 0xFFFF;
7579         while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7580             &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7581                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7582                     MPI2_IOCSTATUS_MASK;
7583                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7584                         pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7585                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7586                             ioc->name, ioc_status,
7587                             le32_to_cpu(mpi_reply.IOCLogInfo));
7588                         break;
7589                 }
7590                 handle = le16_to_cpu(volume_pg1.DevHandle);
7591                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
7592                 raid_device = _scsih_raid_device_find_by_wwid(ioc,
7593                     le64_to_cpu(volume_pg1.WWID));
7594                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7595                 if (raid_device)
7596                         continue;
7597                 if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7598                     &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7599                      sizeof(Mpi2RaidVolPage0_t)))
7600                         continue;
7601                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7602                     MPI2_IOCSTATUS_MASK;
7603                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7604                         pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7605                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7606                             ioc->name, ioc_status,
7607                             le32_to_cpu(mpi_reply.IOCLogInfo));
7608                         break;
7609                 }
7610                 if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7611                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7612                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED) {
7613                         memset(&element, 0, sizeof(Mpi2EventIrConfigElement_t));
7614                         element.ReasonCode = MPI2_EVENT_IR_CHANGE_RC_ADDED;
7615                         element.VolDevHandle = volume_pg1.DevHandle;
7616                         pr_info(MPT3SAS_FMT
7617                                 "\tBEFORE adding volume: handle (0x%04x)\n",
7618                                 ioc->name, volume_pg1.DevHandle);
7619                         _scsih_sas_volume_add(ioc, &element);
7620                         pr_info(MPT3SAS_FMT
7621                                 "\tAFTER adding volume: handle (0x%04x)\n",
7622                                 ioc->name, volume_pg1.DevHandle);
7623                 }
7624         }
7625
7626         pr_info(MPT3SAS_FMT "\tscan devices: volumes complete\n",
7627             ioc->name);
7628
7629  skip_to_sas:
7630
7631         pr_info(MPT3SAS_FMT "\tscan devices: end devices start\n",
7632             ioc->name);
7633
7634         /* sas devices */
7635         handle = 0xFFFF;
7636         while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7637             &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7638             handle))) {
7639                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7640                     MPI2_IOCSTATUS_MASK;
7641                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7642                         pr_info(MPT3SAS_FMT "\tbreak from end device scan:"\
7643                             " ioc_status(0x%04x), loginfo(0x%08x)\n",
7644                             ioc->name, ioc_status,
7645                             le32_to_cpu(mpi_reply.IOCLogInfo));
7646                         break;
7647                 }
7648                 handle = le16_to_cpu(sas_device_pg0.DevHandle);
7649                 if (!(_scsih_is_end_device(
7650                     le32_to_cpu(sas_device_pg0.DeviceInfo))))
7651                         continue;
7652                 sas_device = mpt3sas_get_sdev_by_addr(ioc,
7653                     le64_to_cpu(sas_device_pg0.SASAddress));
7654                 if (sas_device) {
7655                         sas_device_put(sas_device);
7656                         continue;
7657                 }
7658                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7659                 if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address)) {
7660                         pr_info(MPT3SAS_FMT "\tBEFORE adding end device: " \
7661                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7662                             handle, (unsigned long long)
7663                             le64_to_cpu(sas_device_pg0.SASAddress));
7664                         mpt3sas_transport_update_links(ioc, sas_address, handle,
7665                             sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
7666                         retry_count = 0;
7667                         /* This will retry adding the end device.
7668                          * _scsih_add_device() will decide on retries and
7669                          * return "1" when it should be retried
7670                          */
7671                         while (_scsih_add_device(ioc, handle, retry_count++,
7672                             0)) {
7673                                 ssleep(1);
7674                         }
7675                         pr_info(MPT3SAS_FMT "\tAFTER adding end device: " \
7676                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7677                             handle, (unsigned long long)
7678                             le64_to_cpu(sas_device_pg0.SASAddress));
7679                 }
7680         }
7681         pr_info(MPT3SAS_FMT "\tscan devices: end devices complete\n",
7682             ioc->name);
7683
7684         pr_info(MPT3SAS_FMT "scan devices: complete\n", ioc->name);
7685 }
7686 /**
7687  * mpt3sas_scsih_reset_handler - reset callback handler (for scsih)
7688  * @ioc: per adapter object
7689  * @reset_phase: phase
7690  *
7691  * The handler for doing any required cleanup or initialization.
7692  *
7693  * The reset phase can be MPT3_IOC_PRE_RESET, MPT3_IOC_AFTER_RESET,
7694  * MPT3_IOC_DONE_RESET
7695  *
7696  * Return nothing.
7697  */
7698 void
7699 mpt3sas_scsih_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
7700 {
7701         switch (reset_phase) {
7702         case MPT3_IOC_PRE_RESET:
7703                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7704                         "%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
7705                 break;
7706         case MPT3_IOC_AFTER_RESET:
7707                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7708                         "%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
7709                 if (ioc->scsih_cmds.status & MPT3_CMD_PENDING) {
7710                         ioc->scsih_cmds.status |= MPT3_CMD_RESET;
7711                         mpt3sas_base_free_smid(ioc, ioc->scsih_cmds.smid);
7712                         complete(&ioc->scsih_cmds.done);
7713                 }
7714                 if (ioc->tm_cmds.status & MPT3_CMD_PENDING) {
7715                         ioc->tm_cmds.status |= MPT3_CMD_RESET;
7716                         mpt3sas_base_free_smid(ioc, ioc->tm_cmds.smid);
7717                         complete(&ioc->tm_cmds.done);
7718                 }
7719
7720                 _scsih_fw_event_cleanup_queue(ioc);
7721                 _scsih_flush_running_cmds(ioc);
7722                 break;
7723         case MPT3_IOC_DONE_RESET:
7724                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7725                         "%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));
7726                 if ((!ioc->is_driver_loading) && !(disable_discovery > 0 &&
7727                     !ioc->sas_hba.num_phys)) {
7728                         _scsih_prep_device_scan(ioc);
7729                         _scsih_search_responding_sas_devices(ioc);
7730                         _scsih_search_responding_raid_devices(ioc);
7731                         _scsih_search_responding_expanders(ioc);
7732                         _scsih_error_recovery_delete_devices(ioc);
7733                 }
7734                 break;
7735         }
7736 }
7737
7738 /**
7739  * _mpt3sas_fw_work - delayed task for processing firmware events
7740  * @ioc: per adapter object
7741  * @fw_event: The fw_event_work object
7742  * Context: user.
7743  *
7744  * Return nothing.
7745  */
7746 static void
7747 _mpt3sas_fw_work(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
7748 {
7749         _scsih_fw_event_del_from_list(ioc, fw_event);
7750
7751         /* the queue is being flushed so ignore this event */
7752         if (ioc->remove_host || ioc->pci_error_recovery) {
7753                 fw_event_work_put(fw_event);
7754                 return;
7755         }
7756
7757         switch (fw_event->event) {
7758         case MPT3SAS_PROCESS_TRIGGER_DIAG:
7759                 mpt3sas_process_trigger_data(ioc,
7760                         (struct SL_WH_TRIGGERS_EVENT_DATA_T *)
7761                         fw_event->event_data);
7762                 break;
7763         case MPT3SAS_REMOVE_UNRESPONDING_DEVICES:
7764                 while (scsi_host_in_recovery(ioc->shost) ||
7765                                          ioc->shost_recovery) {
7766                         /*
7767                          * If we're unloading, bail. Otherwise, this can become
7768                          * an infinite loop.
7769                          */
7770                         if (ioc->remove_host)
7771                                 goto out;
7772                         ssleep(1);
7773                 }
7774                 _scsih_remove_unresponding_sas_devices(ioc);
7775                 _scsih_scan_for_devices_after_reset(ioc);
7776                 break;
7777         case MPT3SAS_PORT_ENABLE_COMPLETE:
7778                 ioc->start_scan = 0;
7779         if (missing_delay[0] != -1 && missing_delay[1] != -1)
7780                         mpt3sas_base_update_missing_delay(ioc, missing_delay[0],
7781                             missing_delay[1]);
7782                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
7783                         "port enable: complete from worker thread\n",
7784                         ioc->name));
7785                 break;
7786         case MPT3SAS_TURN_ON_PFA_LED:
7787                 _scsih_turn_on_pfa_led(ioc, fw_event->device_handle);
7788                 break;
7789         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7790                 _scsih_sas_topology_change_event(ioc, fw_event);
7791                 break;
7792         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
7793                 _scsih_sas_device_status_change_event(ioc, fw_event);
7794                 break;
7795         case MPI2_EVENT_SAS_DISCOVERY:
7796                 _scsih_sas_discovery_event(ioc, fw_event);
7797                 break;
7798         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7799                 _scsih_sas_broadcast_primitive_event(ioc, fw_event);
7800                 break;
7801         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
7802                 _scsih_sas_enclosure_dev_status_change_event(ioc,
7803                     fw_event);
7804                 break;
7805         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7806                 _scsih_sas_ir_config_change_event(ioc, fw_event);
7807                 break;
7808         case MPI2_EVENT_IR_VOLUME:
7809                 _scsih_sas_ir_volume_event(ioc, fw_event);
7810                 break;
7811         case MPI2_EVENT_IR_PHYSICAL_DISK:
7812                 _scsih_sas_ir_physical_disk_event(ioc, fw_event);
7813                 break;
7814         case MPI2_EVENT_IR_OPERATION_STATUS:
7815                 _scsih_sas_ir_operation_status_event(ioc, fw_event);
7816                 break;
7817         }
7818 out:
7819         fw_event_work_put(fw_event);
7820 }
7821
7822 /**
7823  * _firmware_event_work
7824  * @ioc: per adapter object
7825  * @work: The fw_event_work object
7826  * Context: user.
7827  *
7828  * wrappers for the work thread handling firmware events
7829  *
7830  * Return nothing.
7831  */
7832
7833 static void
7834 _firmware_event_work(struct work_struct *work)
7835 {
7836         struct fw_event_work *fw_event = container_of(work,
7837             struct fw_event_work, work);
7838
7839         _mpt3sas_fw_work(fw_event->ioc, fw_event);
7840 }
7841
7842 /**
7843  * mpt3sas_scsih_event_callback - firmware event handler (called at ISR time)
7844  * @ioc: per adapter object
7845  * @msix_index: MSIX table index supplied by the OS
7846  * @reply: reply message frame(lower 32bit addr)
7847  * Context: interrupt.
7848  *
7849  * This function merely adds a new work task into ioc->firmware_event_thread.
7850  * The tasks are worked from _firmware_event_work in user context.
7851  *
7852  * Return 1 meaning mf should be freed from _base_interrupt
7853  *        0 means the mf is freed from this function.
7854  */
7855 u8
7856 mpt3sas_scsih_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
7857         u32 reply)
7858 {
7859         struct fw_event_work *fw_event;
7860         Mpi2EventNotificationReply_t *mpi_reply;
7861         u16 event;
7862         u16 sz;
7863         Mpi26EventDataActiveCableExcept_t *ActiveCableEventData;
7864
7865         /* events turned off due to host reset or driver unloading */
7866         if (ioc->remove_host || ioc->pci_error_recovery)
7867                 return 1;
7868
7869         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
7870
7871         if (unlikely(!mpi_reply)) {
7872                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
7873                     ioc->name, __FILE__, __LINE__, __func__);
7874                 return 1;
7875         }
7876
7877         event = le16_to_cpu(mpi_reply->Event);
7878
7879         if (event != MPI2_EVENT_LOG_ENTRY_ADDED)
7880                 mpt3sas_trigger_event(ioc, event, 0);
7881
7882         switch (event) {
7883         /* handle these */
7884         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7885         {
7886                 Mpi2EventDataSasBroadcastPrimitive_t *baen_data =
7887                     (Mpi2EventDataSasBroadcastPrimitive_t *)
7888                     mpi_reply->EventData;
7889
7890                 if (baen_data->Primitive !=
7891                     MPI2_EVENT_PRIMITIVE_ASYNCHRONOUS_EVENT)
7892                         return 1;
7893
7894                 if (ioc->broadcast_aen_busy) {
7895                         ioc->broadcast_aen_pending++;
7896                         return 1;
7897                 } else
7898                         ioc->broadcast_aen_busy = 1;
7899                 break;
7900         }
7901
7902         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7903                 _scsih_check_topo_delete_events(ioc,
7904                     (Mpi2EventDataSasTopologyChangeList_t *)
7905                     mpi_reply->EventData);
7906                 break;
7907         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7908                 _scsih_check_ir_config_unhide_events(ioc,
7909                     (Mpi2EventDataIrConfigChangeList_t *)
7910                     mpi_reply->EventData);
7911                 break;
7912         case MPI2_EVENT_IR_VOLUME:
7913                 _scsih_check_volume_delete_events(ioc,
7914                     (Mpi2EventDataIrVolume_t *)
7915                     mpi_reply->EventData);
7916                 break;
7917         case MPI2_EVENT_LOG_ENTRY_ADDED:
7918         {
7919                 Mpi2EventDataLogEntryAdded_t *log_entry;
7920                 u32 *log_code;
7921
7922                 if (!ioc->is_warpdrive)
7923                         break;
7924
7925                 log_entry = (Mpi2EventDataLogEntryAdded_t *)
7926                     mpi_reply->EventData;
7927                 log_code = (u32 *)log_entry->LogData;
7928
7929                 if (le16_to_cpu(log_entry->LogEntryQualifier)
7930                     != MPT2_WARPDRIVE_LOGENTRY)
7931                         break;
7932
7933                 switch (le32_to_cpu(*log_code)) {
7934                 case MPT2_WARPDRIVE_LC_SSDT:
7935                         pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
7936                             "IO Throttling has occurred in the WarpDrive "
7937                             "subsystem. Check WarpDrive documentation for "
7938                             "additional details.\n", ioc->name);
7939                         break;
7940                 case MPT2_WARPDRIVE_LC_SSDLW:
7941                         pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
7942                             "Program/Erase Cycles for the WarpDrive subsystem "
7943                             "in degraded range. Check WarpDrive documentation "
7944                             "for additional details.\n", ioc->name);
7945                         break;
7946                 case MPT2_WARPDRIVE_LC_SSDLF:
7947                         pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
7948                             "There are no Program/Erase Cycles for the "
7949                             "WarpDrive subsystem. The storage device will be "
7950                             "in read-only mode. Check WarpDrive documentation "
7951                             "for additional details.\n", ioc->name);
7952                         break;
7953                 case MPT2_WARPDRIVE_LC_BRMF:
7954                         pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
7955                             "The Backup Rail Monitor has failed on the "
7956                             "WarpDrive subsystem. Check WarpDrive "
7957                             "documentation for additional details.\n",
7958                             ioc->name);
7959                         break;
7960                 }
7961
7962                 break;
7963         }
7964         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
7965         case MPI2_EVENT_IR_OPERATION_STATUS:
7966         case MPI2_EVENT_SAS_DISCOVERY:
7967         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
7968         case MPI2_EVENT_IR_PHYSICAL_DISK:
7969                 break;
7970
7971         case MPI2_EVENT_TEMP_THRESHOLD:
7972                 _scsih_temp_threshold_events(ioc,
7973                         (Mpi2EventDataTemperature_t *)
7974                         mpi_reply->EventData);
7975                 break;
7976         case MPI2_EVENT_ACTIVE_CABLE_EXCEPTION:
7977                 ActiveCableEventData =
7978                     (Mpi26EventDataActiveCableExcept_t *) mpi_reply->EventData;
7979                 if (ActiveCableEventData->ReasonCode ==
7980                                 MPI26_EVENT_ACTIVE_CABLE_INSUFFICIENT_POWER) {
7981                         pr_info(MPT3SAS_FMT "Currently an active cable with ReceptacleID %d",
7982                             ioc->name, ActiveCableEventData->ReceptacleID);
7983                         pr_info("cannot be powered and devices connected to this active cable");
7984                         pr_info("will not be seen. This active cable");
7985                         pr_info("requires %d mW of power",
7986                             ActiveCableEventData->ActiveCablePowerRequirement);
7987                 }
7988                 break;
7989
7990         default: /* ignore the rest */
7991                 return 1;
7992         }
7993
7994         sz = le16_to_cpu(mpi_reply->EventDataLength) * 4;
7995         fw_event = alloc_fw_event_work(sz);
7996         if (!fw_event) {
7997                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
7998                     ioc->name, __FILE__, __LINE__, __func__);
7999                 return 1;
8000         }
8001
8002         memcpy(fw_event->event_data, mpi_reply->EventData, sz);
8003         fw_event->ioc = ioc;
8004         fw_event->VF_ID = mpi_reply->VF_ID;
8005         fw_event->VP_ID = mpi_reply->VP_ID;
8006         fw_event->event = event;
8007         _scsih_fw_event_add(ioc, fw_event);
8008         fw_event_work_put(fw_event);
8009         return 1;
8010 }
8011
8012 /**
8013  * _scsih_expander_node_remove - removing expander device from list.
8014  * @ioc: per adapter object
8015  * @sas_expander: the sas_device object
8016  * Context: Calling function should acquire ioc->sas_node_lock.
8017  *
8018  * Removing object and freeing associated memory from the
8019  * ioc->sas_expander_list.
8020  *
8021  * Return nothing.
8022  */
8023 static void
8024 _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
8025         struct _sas_node *sas_expander)
8026 {
8027         struct _sas_port *mpt3sas_port, *next;
8028
8029         /* remove sibling ports attached to this expander */
8030         list_for_each_entry_safe(mpt3sas_port, next,
8031            &sas_expander->sas_port_list, port_list) {
8032                 if (ioc->shost_recovery)
8033                         return;
8034                 if (mpt3sas_port->remote_identify.device_type ==
8035                     SAS_END_DEVICE)
8036                         mpt3sas_device_remove_by_sas_address(ioc,
8037                             mpt3sas_port->remote_identify.sas_address);
8038                 else if (mpt3sas_port->remote_identify.device_type ==
8039                     SAS_EDGE_EXPANDER_DEVICE ||
8040                     mpt3sas_port->remote_identify.device_type ==
8041                     SAS_FANOUT_EXPANDER_DEVICE)
8042                         mpt3sas_expander_remove(ioc,
8043                             mpt3sas_port->remote_identify.sas_address);
8044         }
8045
8046         mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
8047             sas_expander->sas_address_parent);
8048
8049         pr_info(MPT3SAS_FMT
8050                 "expander_remove: handle(0x%04x), sas_addr(0x%016llx)\n",
8051                 ioc->name,
8052             sas_expander->handle, (unsigned long long)
8053             sas_expander->sas_address);
8054
8055         kfree(sas_expander->phy);
8056         kfree(sas_expander);
8057 }
8058
8059 /**
8060  * _scsih_ir_shutdown - IR shutdown notification
8061  * @ioc: per adapter object
8062  *
8063  * Sending RAID Action to alert the Integrated RAID subsystem of the IOC that
8064  * the host system is shutting down.
8065  *
8066  * Return nothing.
8067  */
8068 static void
8069 _scsih_ir_shutdown(struct MPT3SAS_ADAPTER *ioc)
8070 {
8071         Mpi2RaidActionRequest_t *mpi_request;
8072         Mpi2RaidActionReply_t *mpi_reply;
8073         u16 smid;
8074
8075         /* is IR firmware build loaded ? */
8076         if (!ioc->ir_firmware)
8077                 return;
8078
8079         /* are there any volumes ? */
8080         if (list_empty(&ioc->raid_device_list))
8081                 return;
8082
8083         mutex_lock(&ioc->scsih_cmds.mutex);
8084
8085         if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
8086                 pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
8087                     ioc->name, __func__);
8088                 goto out;
8089         }
8090         ioc->scsih_cmds.status = MPT3_CMD_PENDING;
8091
8092         smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
8093         if (!smid) {
8094                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
8095                     ioc->name, __func__);
8096                 ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8097                 goto out;
8098         }
8099
8100         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
8101         ioc->scsih_cmds.smid = smid;
8102         memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
8103
8104         mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
8105         mpi_request->Action = MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED;
8106
8107         if (!ioc->hide_ir_msg)
8108                 pr_info(MPT3SAS_FMT "IR shutdown (sending)\n", ioc->name);
8109         init_completion(&ioc->scsih_cmds.done);
8110         mpt3sas_base_put_smid_default(ioc, smid);
8111         wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
8112
8113         if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
8114                 pr_err(MPT3SAS_FMT "%s: timeout\n",
8115                     ioc->name, __func__);
8116                 goto out;
8117         }
8118
8119         if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
8120                 mpi_reply = ioc->scsih_cmds.reply;
8121                 if (!ioc->hide_ir_msg)
8122                         pr_info(MPT3SAS_FMT "IR shutdown "
8123                            "(complete): ioc_status(0x%04x), loginfo(0x%08x)\n",
8124                             ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
8125                             le32_to_cpu(mpi_reply->IOCLogInfo));
8126         }
8127
8128  out:
8129         ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8130         mutex_unlock(&ioc->scsih_cmds.mutex);
8131 }
8132
8133 /**
8134  * scsih_remove - detach and remove add host
8135  * @pdev: PCI device struct
8136  *
8137  * Routine called when unloading the driver.
8138  * Return nothing.
8139  */
8140 void scsih_remove(struct pci_dev *pdev)
8141 {
8142         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8143         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8144         struct _sas_port *mpt3sas_port, *next_port;
8145         struct _raid_device *raid_device, *next;
8146         struct MPT3SAS_TARGET *sas_target_priv_data;
8147         struct workqueue_struct *wq;
8148         unsigned long flags;
8149
8150         ioc->remove_host = 1;
8151         _scsih_fw_event_cleanup_queue(ioc);
8152
8153         spin_lock_irqsave(&ioc->fw_event_lock, flags);
8154         wq = ioc->firmware_event_thread;
8155         ioc->firmware_event_thread = NULL;
8156         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8157         if (wq)
8158                 destroy_workqueue(wq);
8159
8160         /* release all the volumes */
8161         _scsih_ir_shutdown(ioc);
8162         list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list,
8163             list) {
8164                 if (raid_device->starget) {
8165                         sas_target_priv_data =
8166                             raid_device->starget->hostdata;
8167                         sas_target_priv_data->deleted = 1;
8168                         scsi_remove_target(&raid_device->starget->dev);
8169                 }
8170                 pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
8171                         ioc->name,  raid_device->handle,
8172                     (unsigned long long) raid_device->wwid);
8173                 _scsih_raid_device_remove(ioc, raid_device);
8174         }
8175
8176         /* free ports attached to the sas_host */
8177         list_for_each_entry_safe(mpt3sas_port, next_port,
8178            &ioc->sas_hba.sas_port_list, port_list) {
8179                 if (mpt3sas_port->remote_identify.device_type ==
8180                     SAS_END_DEVICE)
8181                         mpt3sas_device_remove_by_sas_address(ioc,
8182                             mpt3sas_port->remote_identify.sas_address);
8183                 else if (mpt3sas_port->remote_identify.device_type ==
8184                     SAS_EDGE_EXPANDER_DEVICE ||
8185                     mpt3sas_port->remote_identify.device_type ==
8186                     SAS_FANOUT_EXPANDER_DEVICE)
8187                         mpt3sas_expander_remove(ioc,
8188                             mpt3sas_port->remote_identify.sas_address);
8189         }
8190
8191         /* free phys attached to the sas_host */
8192         if (ioc->sas_hba.num_phys) {
8193                 kfree(ioc->sas_hba.phy);
8194                 ioc->sas_hba.phy = NULL;
8195                 ioc->sas_hba.num_phys = 0;
8196         }
8197
8198         sas_remove_host(shost);
8199         scsi_remove_host(shost);
8200         mpt3sas_base_detach(ioc);
8201         spin_lock(&gioc_lock);
8202         list_del(&ioc->list);
8203         spin_unlock(&gioc_lock);
8204         scsi_host_put(shost);
8205 }
8206
8207 /**
8208  * scsih_shutdown - routine call during system shutdown
8209  * @pdev: PCI device struct
8210  *
8211  * Return nothing.
8212  */
8213 void
8214 scsih_shutdown(struct pci_dev *pdev)
8215 {
8216         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8217         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8218         struct workqueue_struct *wq;
8219         unsigned long flags;
8220
8221         ioc->remove_host = 1;
8222         _scsih_fw_event_cleanup_queue(ioc);
8223
8224         spin_lock_irqsave(&ioc->fw_event_lock, flags);
8225         wq = ioc->firmware_event_thread;
8226         ioc->firmware_event_thread = NULL;
8227         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8228         if (wq)
8229                 destroy_workqueue(wq);
8230
8231         _scsih_ir_shutdown(ioc);
8232         mpt3sas_base_detach(ioc);
8233 }
8234
8235
8236 /**
8237  * _scsih_probe_boot_devices - reports 1st device
8238  * @ioc: per adapter object
8239  *
8240  * If specified in bios page 2, this routine reports the 1st
8241  * device scsi-ml or sas transport for persistent boot device
8242  * purposes.  Please refer to function _scsih_determine_boot_device()
8243  */
8244 static void
8245 _scsih_probe_boot_devices(struct MPT3SAS_ADAPTER *ioc)
8246 {
8247         u8 is_raid;
8248         void *device;
8249         struct _sas_device *sas_device;
8250         struct _raid_device *raid_device;
8251         u16 handle;
8252         u64 sas_address_parent;
8253         u64 sas_address;
8254         unsigned long flags;
8255         int rc;
8256
8257          /* no Bios, return immediately */
8258         if (!ioc->bios_pg3.BiosVersion)
8259                 return;
8260
8261         device = NULL;
8262         is_raid = 0;
8263         if (ioc->req_boot_device.device) {
8264                 device =  ioc->req_boot_device.device;
8265                 is_raid = ioc->req_boot_device.is_raid;
8266         } else if (ioc->req_alt_boot_device.device) {
8267                 device =  ioc->req_alt_boot_device.device;
8268                 is_raid = ioc->req_alt_boot_device.is_raid;
8269         } else if (ioc->current_boot_device.device) {
8270                 device =  ioc->current_boot_device.device;
8271                 is_raid = ioc->current_boot_device.is_raid;
8272         }
8273
8274         if (!device)
8275                 return;
8276
8277         if (is_raid) {
8278                 raid_device = device;
8279                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8280                     raid_device->id, 0);
8281                 if (rc)
8282                         _scsih_raid_device_remove(ioc, raid_device);
8283         } else {
8284                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
8285                 sas_device = device;
8286                 handle = sas_device->handle;
8287                 sas_address_parent = sas_device->sas_address_parent;
8288                 sas_address = sas_device->sas_address;
8289                 list_move_tail(&sas_device->list, &ioc->sas_device_list);
8290                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8291
8292                 if (ioc->hide_drives)
8293                         return;
8294                 if (!mpt3sas_transport_port_add(ioc, handle,
8295                     sas_address_parent)) {
8296                         _scsih_sas_device_remove(ioc, sas_device);
8297                 } else if (!sas_device->starget) {
8298                         if (!ioc->is_driver_loading) {
8299                                 mpt3sas_transport_port_remove(ioc,
8300                                     sas_address,
8301                                     sas_address_parent);
8302                                 _scsih_sas_device_remove(ioc, sas_device);
8303                         }
8304                 }
8305         }
8306 }
8307
8308 /**
8309  * _scsih_probe_raid - reporting raid volumes to scsi-ml
8310  * @ioc: per adapter object
8311  *
8312  * Called during initial loading of the driver.
8313  */
8314 static void
8315 _scsih_probe_raid(struct MPT3SAS_ADAPTER *ioc)
8316 {
8317         struct _raid_device *raid_device, *raid_next;
8318         int rc;
8319
8320         list_for_each_entry_safe(raid_device, raid_next,
8321             &ioc->raid_device_list, list) {
8322                 if (raid_device->starget)
8323                         continue;
8324                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8325                     raid_device->id, 0);
8326                 if (rc)
8327                         _scsih_raid_device_remove(ioc, raid_device);
8328         }
8329 }
8330
8331 static struct _sas_device *get_next_sas_device(struct MPT3SAS_ADAPTER *ioc)
8332 {
8333         struct _sas_device *sas_device = NULL;
8334         unsigned long flags;
8335
8336         spin_lock_irqsave(&ioc->sas_device_lock, flags);
8337         if (!list_empty(&ioc->sas_device_init_list)) {
8338                 sas_device = list_first_entry(&ioc->sas_device_init_list,
8339                                 struct _sas_device, list);
8340                 sas_device_get(sas_device);
8341         }
8342         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8343
8344         return sas_device;
8345 }
8346
8347 static void sas_device_make_active(struct MPT3SAS_ADAPTER *ioc,
8348                 struct _sas_device *sas_device)
8349 {
8350         unsigned long flags;
8351
8352         spin_lock_irqsave(&ioc->sas_device_lock, flags);
8353
8354         /*
8355          * Since we dropped the lock during the call to port_add(), we need to
8356          * be careful here that somebody else didn't move or delete this item
8357          * while we were busy with other things.
8358          *
8359          * If it was on the list, we need a put() for the reference the list
8360          * had. Either way, we need a get() for the destination list.
8361          */
8362         if (!list_empty(&sas_device->list)) {
8363                 list_del_init(&sas_device->list);
8364                 sas_device_put(sas_device);
8365         }
8366
8367         sas_device_get(sas_device);
8368         list_add_tail(&sas_device->list, &ioc->sas_device_list);
8369
8370         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8371 }
8372
8373 /**
8374  * _scsih_probe_sas - reporting sas devices to sas transport
8375  * @ioc: per adapter object
8376  *
8377  * Called during initial loading of the driver.
8378  */
8379 static void
8380 _scsih_probe_sas(struct MPT3SAS_ADAPTER *ioc)
8381 {
8382         struct _sas_device *sas_device;
8383
8384         if (ioc->hide_drives)
8385                 return;
8386
8387         while ((sas_device = get_next_sas_device(ioc))) {
8388                 if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
8389                     sas_device->sas_address_parent)) {
8390                         _scsih_sas_device_remove(ioc, sas_device);
8391                         sas_device_put(sas_device);
8392                         continue;
8393                 } else if (!sas_device->starget) {
8394                         /*
8395                          * When asyn scanning is enabled, its not possible to
8396                          * remove devices while scanning is turned on due to an
8397                          * oops in scsi_sysfs_add_sdev()->add_device()->
8398                          * sysfs_addrm_start()
8399                          */
8400                         if (!ioc->is_driver_loading) {
8401                                 mpt3sas_transport_port_remove(ioc,
8402                                     sas_device->sas_address,
8403                                     sas_device->sas_address_parent);
8404                                 _scsih_sas_device_remove(ioc, sas_device);
8405                                 sas_device_put(sas_device);
8406                                 continue;
8407                         }
8408                 }
8409                 sas_device_make_active(ioc, sas_device);
8410                 sas_device_put(sas_device);
8411         }
8412 }
8413
8414 /**
8415  * _scsih_probe_devices - probing for devices
8416  * @ioc: per adapter object
8417  *
8418  * Called during initial loading of the driver.
8419  */
8420 static void
8421 _scsih_probe_devices(struct MPT3SAS_ADAPTER *ioc)
8422 {
8423         u16 volume_mapping_flags;
8424
8425         if (!(ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR))
8426                 return;  /* return when IOC doesn't support initiator mode */
8427
8428         _scsih_probe_boot_devices(ioc);
8429
8430         if (ioc->ir_firmware) {
8431                 volume_mapping_flags =
8432                     le16_to_cpu(ioc->ioc_pg8.IRVolumeMappingFlags) &
8433                     MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE;
8434                 if (volume_mapping_flags ==
8435                     MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING) {
8436                         _scsih_probe_raid(ioc);
8437                         _scsih_probe_sas(ioc);
8438                 } else {
8439                         _scsih_probe_sas(ioc);
8440                         _scsih_probe_raid(ioc);
8441                 }
8442         } else
8443                 _scsih_probe_sas(ioc);
8444 }
8445
8446 /**
8447  * scsih_scan_start - scsi lld callback for .scan_start
8448  * @shost: SCSI host pointer
8449  *
8450  * The shost has the ability to discover targets on its own instead
8451  * of scanning the entire bus.  In our implemention, we will kick off
8452  * firmware discovery.
8453  */
8454 void
8455 scsih_scan_start(struct Scsi_Host *shost)
8456 {
8457         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8458         int rc;
8459         if (diag_buffer_enable != -1 && diag_buffer_enable != 0)
8460                 mpt3sas_enable_diag_buffer(ioc, diag_buffer_enable);
8461
8462         if (disable_discovery > 0)
8463                 return;
8464
8465         ioc->start_scan = 1;
8466         rc = mpt3sas_port_enable(ioc);
8467
8468         if (rc != 0)
8469                 pr_info(MPT3SAS_FMT "port enable: FAILED\n", ioc->name);
8470 }
8471
8472 /**
8473  * scsih_scan_finished - scsi lld callback for .scan_finished
8474  * @shost: SCSI host pointer
8475  * @time: elapsed time of the scan in jiffies
8476  *
8477  * This function will be called periodicallyn until it returns 1 with the
8478  * scsi_host and the elapsed time of the scan in jiffies. In our implemention,
8479  * we wait for firmware discovery to complete, then return 1.
8480  */
8481 int
8482 scsih_scan_finished(struct Scsi_Host *shost, unsigned long time)
8483 {
8484         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8485
8486         if (disable_discovery > 0) {
8487                 ioc->is_driver_loading = 0;
8488                 ioc->wait_for_discovery_to_complete = 0;
8489                 return 1;
8490         }
8491
8492         if (time >= (300 * HZ)) {
8493                 ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8494                 pr_info(MPT3SAS_FMT
8495                         "port enable: FAILED with timeout (timeout=300s)\n",
8496                         ioc->name);
8497                 ioc->is_driver_loading = 0;
8498                 return 1;
8499         }
8500
8501         if (ioc->start_scan)
8502                 return 0;
8503
8504         if (ioc->start_scan_failed) {
8505                 pr_info(MPT3SAS_FMT
8506                         "port enable: FAILED with (ioc_status=0x%08x)\n",
8507                         ioc->name, ioc->start_scan_failed);
8508                 ioc->is_driver_loading = 0;
8509                 ioc->wait_for_discovery_to_complete = 0;
8510                 ioc->remove_host = 1;
8511                 return 1;
8512         }
8513
8514         pr_info(MPT3SAS_FMT "port enable: SUCCESS\n", ioc->name);
8515         ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8516
8517         if (ioc->wait_for_discovery_to_complete) {
8518                 ioc->wait_for_discovery_to_complete = 0;
8519                 _scsih_probe_devices(ioc);
8520         }
8521         mpt3sas_base_start_watchdog(ioc);
8522         ioc->is_driver_loading = 0;
8523         return 1;
8524 }
8525
8526 /* shost template for SAS 2.0 HBA devices */
8527 static struct scsi_host_template mpt2sas_driver_template = {
8528         .module                         = THIS_MODULE,
8529         .name                           = "Fusion MPT SAS Host",
8530         .proc_name                      = MPT2SAS_DRIVER_NAME,
8531         .queuecommand                   = scsih_qcmd,
8532         .target_alloc                   = scsih_target_alloc,
8533         .slave_alloc                    = scsih_slave_alloc,
8534         .slave_configure                = scsih_slave_configure,
8535         .target_destroy                 = scsih_target_destroy,
8536         .slave_destroy                  = scsih_slave_destroy,
8537         .scan_finished                  = scsih_scan_finished,
8538         .scan_start                     = scsih_scan_start,
8539         .change_queue_depth             = scsih_change_queue_depth,
8540         .eh_abort_handler               = scsih_abort,
8541         .eh_device_reset_handler        = scsih_dev_reset,
8542         .eh_target_reset_handler        = scsih_target_reset,
8543         .eh_host_reset_handler          = scsih_host_reset,
8544         .bios_param                     = scsih_bios_param,
8545         .can_queue                      = 1,
8546         .this_id                        = -1,
8547         .sg_tablesize                   = MPT2SAS_SG_DEPTH,
8548         .max_sectors                    = 32767,
8549         .cmd_per_lun                    = 7,
8550         .use_clustering                 = ENABLE_CLUSTERING,
8551         .shost_attrs                    = mpt3sas_host_attrs,
8552         .sdev_attrs                     = mpt3sas_dev_attrs,
8553         .track_queue_depth              = 1,
8554 };
8555
8556 /* raid transport support for SAS 2.0 HBA devices */
8557 static struct raid_function_template mpt2sas_raid_functions = {
8558         .cookie         = &mpt2sas_driver_template,
8559         .is_raid        = scsih_is_raid,
8560         .get_resync     = scsih_get_resync,
8561         .get_state      = scsih_get_state,
8562 };
8563
8564 /* shost template for SAS 3.0 HBA devices */
8565 static struct scsi_host_template mpt3sas_driver_template = {
8566         .module                         = THIS_MODULE,
8567         .name                           = "Fusion MPT SAS Host",
8568         .proc_name                      = MPT3SAS_DRIVER_NAME,
8569         .queuecommand                   = scsih_qcmd,
8570         .target_alloc                   = scsih_target_alloc,
8571         .slave_alloc                    = scsih_slave_alloc,
8572         .slave_configure                = scsih_slave_configure,
8573         .target_destroy                 = scsih_target_destroy,
8574         .slave_destroy                  = scsih_slave_destroy,
8575         .scan_finished                  = scsih_scan_finished,
8576         .scan_start                     = scsih_scan_start,
8577         .change_queue_depth             = scsih_change_queue_depth,
8578         .eh_abort_handler               = scsih_abort,
8579         .eh_device_reset_handler        = scsih_dev_reset,
8580         .eh_target_reset_handler        = scsih_target_reset,
8581         .eh_host_reset_handler          = scsih_host_reset,
8582         .bios_param                     = scsih_bios_param,
8583         .can_queue                      = 1,
8584         .this_id                        = -1,
8585         .sg_tablesize                   = MPT3SAS_SG_DEPTH,
8586         .max_sectors                    = 32767,
8587         .cmd_per_lun                    = 7,
8588         .use_clustering                 = ENABLE_CLUSTERING,
8589         .shost_attrs                    = mpt3sas_host_attrs,
8590         .sdev_attrs                     = mpt3sas_dev_attrs,
8591         .track_queue_depth              = 1,
8592 };
8593
8594 /* raid transport support for SAS 3.0 HBA devices */
8595 static struct raid_function_template mpt3sas_raid_functions = {
8596         .cookie         = &mpt3sas_driver_template,
8597         .is_raid        = scsih_is_raid,
8598         .get_resync     = scsih_get_resync,
8599         .get_state      = scsih_get_state,
8600 };
8601
8602 /**
8603  * _scsih_determine_hba_mpi_version - determine in which MPI version class
8604  *                                      this device belongs to.
8605  * @pdev: PCI device struct
8606  *
8607  * return MPI2_VERSION for SAS 2.0 HBA devices,
8608  *      MPI25_VERSION for SAS 3.0 HBA devices, and
8609  *      MPI26 VERSION for Cutlass & Invader SAS 3.0 HBA devices
8610  */
8611 u16
8612 _scsih_determine_hba_mpi_version(struct pci_dev *pdev)
8613 {
8614
8615         switch (pdev->device) {
8616         case MPI2_MFGPAGE_DEVID_SSS6200:
8617         case MPI2_MFGPAGE_DEVID_SAS2004:
8618         case MPI2_MFGPAGE_DEVID_SAS2008:
8619         case MPI2_MFGPAGE_DEVID_SAS2108_1:
8620         case MPI2_MFGPAGE_DEVID_SAS2108_2:
8621         case MPI2_MFGPAGE_DEVID_SAS2108_3:
8622         case MPI2_MFGPAGE_DEVID_SAS2116_1:
8623         case MPI2_MFGPAGE_DEVID_SAS2116_2:
8624         case MPI2_MFGPAGE_DEVID_SAS2208_1:
8625         case MPI2_MFGPAGE_DEVID_SAS2208_2:
8626         case MPI2_MFGPAGE_DEVID_SAS2208_3:
8627         case MPI2_MFGPAGE_DEVID_SAS2208_4:
8628         case MPI2_MFGPAGE_DEVID_SAS2208_5:
8629         case MPI2_MFGPAGE_DEVID_SAS2208_6:
8630         case MPI2_MFGPAGE_DEVID_SAS2308_1:
8631         case MPI2_MFGPAGE_DEVID_SAS2308_2:
8632         case MPI2_MFGPAGE_DEVID_SAS2308_3:
8633                 return MPI2_VERSION;
8634         case MPI25_MFGPAGE_DEVID_SAS3004:
8635         case MPI25_MFGPAGE_DEVID_SAS3008:
8636         case MPI25_MFGPAGE_DEVID_SAS3108_1:
8637         case MPI25_MFGPAGE_DEVID_SAS3108_2:
8638         case MPI25_MFGPAGE_DEVID_SAS3108_5:
8639         case MPI25_MFGPAGE_DEVID_SAS3108_6:
8640                 return MPI25_VERSION;
8641         case MPI26_MFGPAGE_DEVID_SAS3216:
8642         case MPI26_MFGPAGE_DEVID_SAS3224:
8643         case MPI26_MFGPAGE_DEVID_SAS3316_1:
8644         case MPI26_MFGPAGE_DEVID_SAS3316_2:
8645         case MPI26_MFGPAGE_DEVID_SAS3316_3:
8646         case MPI26_MFGPAGE_DEVID_SAS3316_4:
8647         case MPI26_MFGPAGE_DEVID_SAS3324_1:
8648         case MPI26_MFGPAGE_DEVID_SAS3324_2:
8649         case MPI26_MFGPAGE_DEVID_SAS3324_3:
8650         case MPI26_MFGPAGE_DEVID_SAS3324_4:
8651                 return MPI26_VERSION;
8652         }
8653         return 0;
8654 }
8655
8656 /**
8657  * _scsih_probe - attach and add scsi host
8658  * @pdev: PCI device struct
8659  * @id: pci device id
8660  *
8661  * Returns 0 success, anything else error.
8662  */
8663 int
8664 _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
8665 {
8666         struct MPT3SAS_ADAPTER *ioc;
8667         struct Scsi_Host *shost = NULL;
8668         int rv;
8669         u16 hba_mpi_version;
8670
8671         /* Determine in which MPI version class this pci device belongs */
8672         hba_mpi_version = _scsih_determine_hba_mpi_version(pdev);
8673         if (hba_mpi_version == 0)
8674                 return -ENODEV;
8675
8676         /* Enumerate only SAS 2.0 HBA's if hbas_to_enumerate is one,
8677          * for other generation HBA's return with -ENODEV
8678          */
8679         if ((hbas_to_enumerate == 1) && (hba_mpi_version !=  MPI2_VERSION))
8680                 return -ENODEV;
8681
8682         /* Enumerate only SAS 3.0 HBA's if hbas_to_enumerate is two,
8683          * for other generation HBA's return with -ENODEV
8684          */
8685         if ((hbas_to_enumerate == 2) && (!(hba_mpi_version ==  MPI25_VERSION
8686                 || hba_mpi_version ==  MPI26_VERSION)))
8687                 return -ENODEV;
8688
8689         switch (hba_mpi_version) {
8690         case MPI2_VERSION:
8691                 /* Use mpt2sas driver host template for SAS 2.0 HBA's */
8692                 shost = scsi_host_alloc(&mpt2sas_driver_template,
8693                   sizeof(struct MPT3SAS_ADAPTER));
8694                 if (!shost)
8695                         return -ENODEV;
8696                 ioc = shost_priv(shost);
8697                 memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8698                 ioc->hba_mpi_version_belonged = hba_mpi_version;
8699                 ioc->id = mpt2_ids++;
8700                 sprintf(ioc->driver_name, "%s", MPT2SAS_DRIVER_NAME);
8701                 if (pdev->device == MPI2_MFGPAGE_DEVID_SSS6200) {
8702                         ioc->is_warpdrive = 1;
8703                         ioc->hide_ir_msg = 1;
8704                 } else
8705                         ioc->mfg_pg10_hide_flag = MFG_PAGE10_EXPOSE_ALL_DISKS;
8706                 break;
8707         case MPI25_VERSION:
8708         case MPI26_VERSION:
8709                 /* Use mpt3sas driver host template for SAS 3.0 HBA's */
8710                 shost = scsi_host_alloc(&mpt3sas_driver_template,
8711                   sizeof(struct MPT3SAS_ADAPTER));
8712                 if (!shost)
8713                         return -ENODEV;
8714                 ioc = shost_priv(shost);
8715                 memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8716                 ioc->hba_mpi_version_belonged = hba_mpi_version;
8717                 ioc->id = mpt3_ids++;
8718                 sprintf(ioc->driver_name, "%s", MPT3SAS_DRIVER_NAME);
8719                 if ((ioc->hba_mpi_version_belonged == MPI25_VERSION &&
8720                         pdev->revision >= SAS3_PCI_DEVICE_C0_REVISION) ||
8721                         (ioc->hba_mpi_version_belonged == MPI26_VERSION))
8722                         ioc->msix96_vector = 1;
8723                 break;
8724         default:
8725                 return -ENODEV;
8726         }
8727
8728         INIT_LIST_HEAD(&ioc->list);
8729         spin_lock(&gioc_lock);
8730         list_add_tail(&ioc->list, &mpt3sas_ioc_list);
8731         spin_unlock(&gioc_lock);
8732         ioc->shost = shost;
8733         ioc->pdev = pdev;
8734         ioc->scsi_io_cb_idx = scsi_io_cb_idx;
8735         ioc->tm_cb_idx = tm_cb_idx;
8736         ioc->ctl_cb_idx = ctl_cb_idx;
8737         ioc->base_cb_idx = base_cb_idx;
8738         ioc->port_enable_cb_idx = port_enable_cb_idx;
8739         ioc->transport_cb_idx = transport_cb_idx;
8740         ioc->scsih_cb_idx = scsih_cb_idx;
8741         ioc->config_cb_idx = config_cb_idx;
8742         ioc->tm_tr_cb_idx = tm_tr_cb_idx;
8743         ioc->tm_tr_volume_cb_idx = tm_tr_volume_cb_idx;
8744         ioc->tm_sas_control_cb_idx = tm_sas_control_cb_idx;
8745         ioc->logging_level = logging_level;
8746         ioc->schedule_dead_ioc_flush_running_cmds = &_scsih_flush_running_cmds;
8747         /* misc semaphores and spin locks */
8748         mutex_init(&ioc->reset_in_progress_mutex);
8749         /* initializing pci_access_mutex lock */
8750         mutex_init(&ioc->pci_access_mutex);
8751         spin_lock_init(&ioc->ioc_reset_in_progress_lock);
8752         spin_lock_init(&ioc->scsi_lookup_lock);
8753         spin_lock_init(&ioc->sas_device_lock);
8754         spin_lock_init(&ioc->sas_node_lock);
8755         spin_lock_init(&ioc->fw_event_lock);
8756         spin_lock_init(&ioc->raid_device_lock);
8757         spin_lock_init(&ioc->diag_trigger_lock);
8758
8759         INIT_LIST_HEAD(&ioc->sas_device_list);
8760         INIT_LIST_HEAD(&ioc->sas_device_init_list);
8761         INIT_LIST_HEAD(&ioc->sas_expander_list);
8762         INIT_LIST_HEAD(&ioc->fw_event_list);
8763         INIT_LIST_HEAD(&ioc->raid_device_list);
8764         INIT_LIST_HEAD(&ioc->sas_hba.sas_port_list);
8765         INIT_LIST_HEAD(&ioc->delayed_tr_list);
8766         INIT_LIST_HEAD(&ioc->delayed_sc_list);
8767         INIT_LIST_HEAD(&ioc->delayed_event_ack_list);
8768         INIT_LIST_HEAD(&ioc->delayed_tr_volume_list);
8769         INIT_LIST_HEAD(&ioc->reply_queue_list);
8770
8771         sprintf(ioc->name, "%s_cm%d", ioc->driver_name, ioc->id);
8772
8773         /* init shost parameters */
8774         shost->max_cmd_len = 32;
8775         shost->max_lun = max_lun;
8776         shost->transportt = mpt3sas_transport_template;
8777         shost->unique_id = ioc->id;
8778
8779         if (max_sectors != 0xFFFF) {
8780                 if (max_sectors < 64) {
8781                         shost->max_sectors = 64;
8782                         pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8783                             "for max_sectors, range is 64 to 32767. Assigning "
8784                             "value of 64.\n", ioc->name, max_sectors);
8785                 } else if (max_sectors > 32767) {
8786                         shost->max_sectors = 32767;
8787                         pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8788                             "for max_sectors, range is 64 to 32767. Assigning "
8789                             "default value of 32767.\n", ioc->name,
8790                             max_sectors);
8791                 } else {
8792                         shost->max_sectors = max_sectors & 0xFFFE;
8793                         pr_info(MPT3SAS_FMT
8794                                 "The max_sectors value is set to %d\n",
8795                                 ioc->name, shost->max_sectors);
8796                 }
8797         }
8798
8799         /* register EEDP capabilities with SCSI layer */
8800         if (prot_mask > 0)
8801                 scsi_host_set_prot(shost, prot_mask);
8802         else
8803                 scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION
8804                                    | SHOST_DIF_TYPE2_PROTECTION
8805                                    | SHOST_DIF_TYPE3_PROTECTION);
8806
8807         scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
8808
8809         /* event thread */
8810         snprintf(ioc->firmware_event_name, sizeof(ioc->firmware_event_name),
8811             "fw_event_%s%d", ioc->driver_name, ioc->id);
8812         ioc->firmware_event_thread = alloc_ordered_workqueue(
8813             ioc->firmware_event_name, WQ_MEM_RECLAIM);
8814         if (!ioc->firmware_event_thread) {
8815                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8816                     ioc->name, __FILE__, __LINE__, __func__);
8817                 rv = -ENODEV;
8818                 goto out_thread_fail;
8819         }
8820
8821         ioc->is_driver_loading = 1;
8822         if ((mpt3sas_base_attach(ioc))) {
8823                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8824                     ioc->name, __FILE__, __LINE__, __func__);
8825                 rv = -ENODEV;
8826                 goto out_attach_fail;
8827         }
8828
8829         if (ioc->is_warpdrive) {
8830                 if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_EXPOSE_ALL_DISKS)
8831                         ioc->hide_drives = 0;
8832                 else if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_HIDE_ALL_DISKS)
8833                         ioc->hide_drives = 1;
8834                 else {
8835                         if (mpt3sas_get_num_volumes(ioc))
8836                                 ioc->hide_drives = 1;
8837                         else
8838                                 ioc->hide_drives = 0;
8839                 }
8840         } else
8841                 ioc->hide_drives = 0;
8842
8843         rv = scsi_add_host(shost, &pdev->dev);
8844         if (rv) {
8845                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8846                     ioc->name, __FILE__, __LINE__, __func__);
8847                 goto out_add_shost_fail;
8848         }
8849
8850         scsi_scan_host(shost);
8851         return 0;
8852 out_add_shost_fail:
8853         mpt3sas_base_detach(ioc);
8854  out_attach_fail:
8855         destroy_workqueue(ioc->firmware_event_thread);
8856  out_thread_fail:
8857         spin_lock(&gioc_lock);
8858         list_del(&ioc->list);
8859         spin_unlock(&gioc_lock);
8860         scsi_host_put(shost);
8861         return rv;
8862 }
8863
8864 #ifdef CONFIG_PM
8865 /**
8866  * scsih_suspend - power management suspend main entry point
8867  * @pdev: PCI device struct
8868  * @state: PM state change to (usually PCI_D3)
8869  *
8870  * Returns 0 success, anything else error.
8871  */
8872 int
8873 scsih_suspend(struct pci_dev *pdev, pm_message_t state)
8874 {
8875         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8876         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8877         pci_power_t device_state;
8878
8879         mpt3sas_base_stop_watchdog(ioc);
8880         flush_scheduled_work();
8881         scsi_block_requests(shost);
8882         device_state = pci_choose_state(pdev, state);
8883         pr_info(MPT3SAS_FMT
8884                 "pdev=0x%p, slot=%s, entering operating state [D%d]\n",
8885                 ioc->name, pdev, pci_name(pdev), device_state);
8886
8887         pci_save_state(pdev);
8888         mpt3sas_base_free_resources(ioc);
8889         pci_set_power_state(pdev, device_state);
8890         return 0;
8891 }
8892
8893 /**
8894  * scsih_resume - power management resume main entry point
8895  * @pdev: PCI device struct
8896  *
8897  * Returns 0 success, anything else error.
8898  */
8899 int
8900 scsih_resume(struct pci_dev *pdev)
8901 {
8902         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8903         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8904         pci_power_t device_state = pdev->current_state;
8905         int r;
8906
8907         pr_info(MPT3SAS_FMT
8908                 "pdev=0x%p, slot=%s, previous operating state [D%d]\n",
8909                 ioc->name, pdev, pci_name(pdev), device_state);
8910
8911         pci_set_power_state(pdev, PCI_D0);
8912         pci_enable_wake(pdev, PCI_D0, 0);
8913         pci_restore_state(pdev);
8914         ioc->pdev = pdev;
8915         r = mpt3sas_base_map_resources(ioc);
8916         if (r)
8917                 return r;
8918
8919         mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP, SOFT_RESET);
8920         scsi_unblock_requests(shost);
8921         mpt3sas_base_start_watchdog(ioc);
8922         return 0;
8923 }
8924 #endif /* CONFIG_PM */
8925
8926 /**
8927  * scsih_pci_error_detected - Called when a PCI error is detected.
8928  * @pdev: PCI device struct
8929  * @state: PCI channel state
8930  *
8931  * Description: Called when a PCI error is detected.
8932  *
8933  * Return value:
8934  *      PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8935  */
8936 pci_ers_result_t
8937 scsih_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
8938 {
8939         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8940         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8941
8942         pr_info(MPT3SAS_FMT "PCI error: detected callback, state(%d)!!\n",
8943             ioc->name, state);
8944
8945         switch (state) {
8946         case pci_channel_io_normal:
8947                 return PCI_ERS_RESULT_CAN_RECOVER;
8948         case pci_channel_io_frozen:
8949                 /* Fatal error, prepare for slot reset */
8950                 ioc->pci_error_recovery = 1;
8951                 scsi_block_requests(ioc->shost);
8952                 mpt3sas_base_stop_watchdog(ioc);
8953                 mpt3sas_base_free_resources(ioc);
8954                 return PCI_ERS_RESULT_NEED_RESET;
8955         case pci_channel_io_perm_failure:
8956                 /* Permanent error, prepare for device removal */
8957                 ioc->pci_error_recovery = 1;
8958                 mpt3sas_base_stop_watchdog(ioc);
8959                 _scsih_flush_running_cmds(ioc);
8960                 return PCI_ERS_RESULT_DISCONNECT;
8961         }
8962         return PCI_ERS_RESULT_NEED_RESET;
8963 }
8964
8965 /**
8966  * scsih_pci_slot_reset - Called when PCI slot has been reset.
8967  * @pdev: PCI device struct
8968  *
8969  * Description: This routine is called by the pci error recovery
8970  * code after the PCI slot has been reset, just before we
8971  * should resume normal operations.
8972  */
8973 pci_ers_result_t
8974 scsih_pci_slot_reset(struct pci_dev *pdev)
8975 {
8976         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8977         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8978         int rc;
8979
8980         pr_info(MPT3SAS_FMT "PCI error: slot reset callback!!\n",
8981              ioc->name);
8982
8983         ioc->pci_error_recovery = 0;
8984         ioc->pdev = pdev;
8985         pci_restore_state(pdev);
8986         rc = mpt3sas_base_map_resources(ioc);
8987         if (rc)
8988                 return PCI_ERS_RESULT_DISCONNECT;
8989
8990         rc = mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
8991             FORCE_BIG_HAMMER);
8992
8993         pr_warn(MPT3SAS_FMT "hard reset: %s\n", ioc->name,
8994             (rc == 0) ? "success" : "failed");
8995
8996         if (!rc)
8997                 return PCI_ERS_RESULT_RECOVERED;
8998         else
8999                 return PCI_ERS_RESULT_DISCONNECT;
9000 }
9001
9002 /**
9003  * scsih_pci_resume() - resume normal ops after PCI reset
9004  * @pdev: pointer to PCI device
9005  *
9006  * Called when the error recovery driver tells us that its
9007  * OK to resume normal operation. Use completion to allow
9008  * halted scsi ops to resume.
9009  */
9010 void
9011 scsih_pci_resume(struct pci_dev *pdev)
9012 {
9013         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9014         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9015
9016         pr_info(MPT3SAS_FMT "PCI error: resume callback!!\n", ioc->name);
9017
9018         pci_cleanup_aer_uncorrect_error_status(pdev);
9019         mpt3sas_base_start_watchdog(ioc);
9020         scsi_unblock_requests(ioc->shost);
9021 }
9022
9023 /**
9024  * scsih_pci_mmio_enabled - Enable MMIO and dump debug registers
9025  * @pdev: pointer to PCI device
9026  */
9027 pci_ers_result_t
9028 scsih_pci_mmio_enabled(struct pci_dev *pdev)
9029 {
9030         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9031         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9032
9033         pr_info(MPT3SAS_FMT "PCI error: mmio enabled callback!!\n",
9034             ioc->name);
9035
9036         /* TODO - dump whatever for debugging purposes */
9037
9038         /* This called only if scsih_pci_error_detected returns
9039          * PCI_ERS_RESULT_CAN_RECOVER. Read/write to the device still
9040          * works, no need to reset slot.
9041          */
9042         return PCI_ERS_RESULT_RECOVERED;
9043 }
9044
9045 /*
9046  * The pci device ids are defined in mpi/mpi2_cnfg.h.
9047  */
9048 static const struct pci_device_id mpt3sas_pci_table[] = {
9049         /* Spitfire ~ 2004 */
9050         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2004,
9051                 PCI_ANY_ID, PCI_ANY_ID },
9052         /* Falcon ~ 2008 */
9053         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2008,
9054                 PCI_ANY_ID, PCI_ANY_ID },
9055         /* Liberator ~ 2108 */
9056         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_1,
9057                 PCI_ANY_ID, PCI_ANY_ID },
9058         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_2,
9059                 PCI_ANY_ID, PCI_ANY_ID },
9060         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_3,
9061                 PCI_ANY_ID, PCI_ANY_ID },
9062         /* Meteor ~ 2116 */
9063         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_1,
9064                 PCI_ANY_ID, PCI_ANY_ID },
9065         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_2,
9066                 PCI_ANY_ID, PCI_ANY_ID },
9067         /* Thunderbolt ~ 2208 */
9068         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_1,
9069                 PCI_ANY_ID, PCI_ANY_ID },
9070         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_2,
9071                 PCI_ANY_ID, PCI_ANY_ID },
9072         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_3,
9073                 PCI_ANY_ID, PCI_ANY_ID },
9074         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_4,
9075                 PCI_ANY_ID, PCI_ANY_ID },
9076         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_5,
9077                 PCI_ANY_ID, PCI_ANY_ID },
9078         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_6,
9079                 PCI_ANY_ID, PCI_ANY_ID },
9080         /* Mustang ~ 2308 */
9081         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_1,
9082                 PCI_ANY_ID, PCI_ANY_ID },
9083         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_2,
9084                 PCI_ANY_ID, PCI_ANY_ID },
9085         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_3,
9086                 PCI_ANY_ID, PCI_ANY_ID },
9087         /* SSS6200 */
9088         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SSS6200,
9089                 PCI_ANY_ID, PCI_ANY_ID },
9090         /* Fury ~ 3004 and 3008 */
9091         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3004,
9092                 PCI_ANY_ID, PCI_ANY_ID },
9093         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3008,
9094                 PCI_ANY_ID, PCI_ANY_ID },
9095         /* Invader ~ 3108 */
9096         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_1,
9097                 PCI_ANY_ID, PCI_ANY_ID },
9098         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_2,
9099                 PCI_ANY_ID, PCI_ANY_ID },
9100         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_5,
9101                 PCI_ANY_ID, PCI_ANY_ID },
9102         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_6,
9103                 PCI_ANY_ID, PCI_ANY_ID },
9104         /* Cutlass ~ 3216 and 3224 */
9105         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3216,
9106                 PCI_ANY_ID, PCI_ANY_ID },
9107         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3224,
9108                 PCI_ANY_ID, PCI_ANY_ID },
9109         /* Intruder ~ 3316 and 3324 */
9110         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_1,
9111                 PCI_ANY_ID, PCI_ANY_ID },
9112         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_2,
9113                 PCI_ANY_ID, PCI_ANY_ID },
9114         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_3,
9115                 PCI_ANY_ID, PCI_ANY_ID },
9116         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_4,
9117                 PCI_ANY_ID, PCI_ANY_ID },
9118         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_1,
9119                 PCI_ANY_ID, PCI_ANY_ID },
9120         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_2,
9121                 PCI_ANY_ID, PCI_ANY_ID },
9122         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_3,
9123                 PCI_ANY_ID, PCI_ANY_ID },
9124         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_4,
9125                 PCI_ANY_ID, PCI_ANY_ID },
9126         {0}     /* Terminating entry */
9127 };
9128 MODULE_DEVICE_TABLE(pci, mpt3sas_pci_table);
9129
9130 static struct pci_error_handlers _mpt3sas_err_handler = {
9131         .error_detected = scsih_pci_error_detected,
9132         .mmio_enabled   = scsih_pci_mmio_enabled,
9133         .slot_reset     = scsih_pci_slot_reset,
9134         .resume         = scsih_pci_resume,
9135 };
9136
9137 static struct pci_driver mpt3sas_driver = {
9138         .name           = MPT3SAS_DRIVER_NAME,
9139         .id_table       = mpt3sas_pci_table,
9140         .probe          = _scsih_probe,
9141         .remove         = scsih_remove,
9142         .shutdown       = scsih_shutdown,
9143         .err_handler    = &_mpt3sas_err_handler,
9144 #ifdef CONFIG_PM
9145         .suspend        = scsih_suspend,
9146         .resume         = scsih_resume,
9147 #endif
9148 };
9149
9150 /**
9151  * scsih_init - main entry point for this driver.
9152  *
9153  * Returns 0 success, anything else error.
9154  */
9155 int
9156 scsih_init(void)
9157 {
9158         mpt2_ids = 0;
9159         mpt3_ids = 0;
9160
9161         mpt3sas_base_initialize_callback_handler();
9162
9163          /* queuecommand callback hander */
9164         scsi_io_cb_idx = mpt3sas_base_register_callback_handler(_scsih_io_done);
9165
9166         /* task managment callback handler */
9167         tm_cb_idx = mpt3sas_base_register_callback_handler(_scsih_tm_done);
9168
9169         /* base internal commands callback handler */
9170         base_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_base_done);
9171         port_enable_cb_idx = mpt3sas_base_register_callback_handler(
9172             mpt3sas_port_enable_done);
9173
9174         /* transport internal commands callback handler */
9175         transport_cb_idx = mpt3sas_base_register_callback_handler(
9176             mpt3sas_transport_done);
9177
9178         /* scsih internal commands callback handler */
9179         scsih_cb_idx = mpt3sas_base_register_callback_handler(_scsih_done);
9180
9181         /* configuration page API internal commands callback handler */
9182         config_cb_idx = mpt3sas_base_register_callback_handler(
9183             mpt3sas_config_done);
9184
9185         /* ctl module callback handler */
9186         ctl_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_ctl_done);
9187
9188         tm_tr_cb_idx = mpt3sas_base_register_callback_handler(
9189             _scsih_tm_tr_complete);
9190
9191         tm_tr_volume_cb_idx = mpt3sas_base_register_callback_handler(
9192             _scsih_tm_volume_tr_complete);
9193
9194         tm_sas_control_cb_idx = mpt3sas_base_register_callback_handler(
9195             _scsih_sas_control_complete);
9196
9197         return 0;
9198 }
9199
9200 /**
9201  * scsih_exit - exit point for this driver (when it is a module).
9202  *
9203  * Returns 0 success, anything else error.
9204  */
9205 void
9206 scsih_exit(void)
9207 {
9208
9209         mpt3sas_base_release_callback_handler(scsi_io_cb_idx);
9210         mpt3sas_base_release_callback_handler(tm_cb_idx);
9211         mpt3sas_base_release_callback_handler(base_cb_idx);
9212         mpt3sas_base_release_callback_handler(port_enable_cb_idx);
9213         mpt3sas_base_release_callback_handler(transport_cb_idx);
9214         mpt3sas_base_release_callback_handler(scsih_cb_idx);
9215         mpt3sas_base_release_callback_handler(config_cb_idx);
9216         mpt3sas_base_release_callback_handler(ctl_cb_idx);
9217
9218         mpt3sas_base_release_callback_handler(tm_tr_cb_idx);
9219         mpt3sas_base_release_callback_handler(tm_tr_volume_cb_idx);
9220         mpt3sas_base_release_callback_handler(tm_sas_control_cb_idx);
9221
9222 /* raid transport support */
9223         if (hbas_to_enumerate != 1)
9224                 raid_class_release(mpt3sas_raid_template);
9225         if (hbas_to_enumerate != 2)
9226                 raid_class_release(mpt2sas_raid_template);
9227         sas_release_transport(mpt3sas_transport_template);
9228 }
9229
9230 /**
9231  * _mpt3sas_init - main entry point for this driver.
9232  *
9233  * Returns 0 success, anything else error.
9234  */
9235 static int __init
9236 _mpt3sas_init(void)
9237 {
9238         int error;
9239
9240         pr_info("%s version %s loaded\n", MPT3SAS_DRIVER_NAME,
9241                                         MPT3SAS_DRIVER_VERSION);
9242
9243         mpt3sas_transport_template =
9244             sas_attach_transport(&mpt3sas_transport_functions);
9245         if (!mpt3sas_transport_template)
9246                 return -ENODEV;
9247
9248         /* No need attach mpt3sas raid functions template
9249          * if hbas_to_enumarate value is one.
9250          */
9251         if (hbas_to_enumerate != 1) {
9252                 mpt3sas_raid_template =
9253                                 raid_class_attach(&mpt3sas_raid_functions);
9254                 if (!mpt3sas_raid_template) {
9255                         sas_release_transport(mpt3sas_transport_template);
9256                         return -ENODEV;
9257                 }
9258         }
9259
9260         /* No need to attach mpt2sas raid functions template
9261          * if hbas_to_enumarate value is two
9262          */
9263         if (hbas_to_enumerate != 2) {
9264                 mpt2sas_raid_template =
9265                                 raid_class_attach(&mpt2sas_raid_functions);
9266                 if (!mpt2sas_raid_template) {
9267                         sas_release_transport(mpt3sas_transport_template);
9268                         return -ENODEV;
9269                 }
9270         }
9271
9272         error = scsih_init();
9273         if (error) {
9274                 scsih_exit();
9275                 return error;
9276         }
9277
9278         mpt3sas_ctl_init(hbas_to_enumerate);
9279
9280         error = pci_register_driver(&mpt3sas_driver);
9281         if (error)
9282                 scsih_exit();
9283
9284         return error;
9285 }
9286
9287 /**
9288  * _mpt3sas_exit - exit point for this driver (when it is a module).
9289  *
9290  */
9291 static void __exit
9292 _mpt3sas_exit(void)
9293 {
9294         pr_info("mpt3sas version %s unloading\n",
9295                                 MPT3SAS_DRIVER_VERSION);
9296
9297         pci_unregister_driver(&mpt3sas_driver);
9298
9299         mpt3sas_ctl_exit(hbas_to_enumerate);
9300
9301         scsih_exit();
9302 }
9303
9304 module_init(_mpt3sas_init);
9305 module_exit(_mpt3sas_exit);