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/pci-aspm.h>
  55 #include <linux/interrupt.h>
  56 #include <linux/aer.h>
  57 #include <linux/raid_class.h>
  58 #include <asm/unaligned.h>
  59
  60 #include "mpt3sas_base.h"
  61
  62 #define RAID_CHANNEL 1
  63 /* forward proto's */
  64 static void _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
  65         struct _sas_node *sas_expander);
  66 static void _firmware_event_work(struct work_struct *work);
  67
  68 static void _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
  69         struct _sas_device *sas_device);
  70 static int _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle,
  71         u8 retry_count, u8 is_pd);
  72
  73 static u8 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid);
  74
  75 /* global parameters */
  76 LIST_HEAD(mpt3sas_ioc_list);
  77 /* global ioc lock for list operations */
  78 DEFINE_SPINLOCK(gioc_lock);
  79
  80 MODULE_AUTHOR(MPT3SAS_AUTHOR);
  81 MODULE_DESCRIPTION(MPT3SAS_DESCRIPTION);
  82 MODULE_LICENSE("GPL");
  83 MODULE_VERSION(MPT3SAS_DRIVER_VERSION);
  84 MODULE_ALIAS("mpt2sas");
  85
  86 /* local parameters */
  87 static u8 scsi_io_cb_idx = -1;
  88 static u8 tm_cb_idx = -1;
  89 static u8 ctl_cb_idx = -1;
  90 static u8 base_cb_idx = -1;
  91 static u8 port_enable_cb_idx = -1;
  92 static u8 transport_cb_idx = -1;
  93 static u8 scsih_cb_idx = -1;
  94 static u8 config_cb_idx = -1;
  95 static int mpt2_ids;
  96 static int mpt3_ids;
  97
  98 static u8 tm_tr_cb_idx = -1 ;
  99 static u8 tm_tr_volume_cb_idx = -1 ;
 100 static u8 tm_sas_control_cb_idx = -1;
 101
 102 /* command line options */
 103 static u32 logging_level;
 104 MODULE_PARM_DESC(logging_level,
 105         " bits for enabling additional logging info (default=0)");
 106
 107
 108 static ushort max_sectors = 0xFFFF;
 109 module_param(max_sectors, ushort, 0);
 110 MODULE_PARM_DESC(max_sectors, "max sectors, range 64 to 32767  default=32767");
 111
 112
 113 static int missing_delay[2] = {-1, -1};
 114 module_param_array(missing_delay, int, NULL, 0);
 115 MODULE_PARM_DESC(missing_delay, " device missing delay , io missing delay");
 116
 117 /* scsi-mid layer global parmeter is max_report_luns, which is 511 */
 118 #define MPT3SAS_MAX_LUN (16895)
 119 static u64 max_lun = MPT3SAS_MAX_LUN;
 120 module_param(max_lun, ullong, 0);
 121 MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");
 122
 123 static ushort hbas_to_enumerate;
 124 module_param(hbas_to_enumerate, ushort, 0);
 125 MODULE_PARM_DESC(hbas_to_enumerate,
 126                 " 0 - enumerates both SAS 2.0 & SAS 3.0 generation HBAs\n \
 127                   1 - enumerates only SAS 2.0 generation HBAs\n \
 128                   2 - enumerates only SAS 3.0 generation HBAs (default=0)");
 129
 130 /* diag_buffer_enable is bitwise
 131  * bit 0 set = TRACE
 132  * bit 1 set = SNAPSHOT
 133  * bit 2 set = EXTENDED
 134  *
 135  * Either bit can be set, or both
 136  */
 137 static int diag_buffer_enable = -1;
 138 module_param(diag_buffer_enable, int, 0);
 139 MODULE_PARM_DESC(diag_buffer_enable,
 140         " post diag buffers (TRACE=1/SNAPSHOT=2/EXTENDED=4/default=0)");
 141 static int disable_discovery = -1;
 142 module_param(disable_discovery, int, 0);
 143 MODULE_PARM_DESC(disable_discovery, " disable discovery ");
 144
 145
 146 /* permit overriding the host protection capabilities mask (EEDP/T10 PI) */
 147 static int prot_mask = -1;
 148 module_param(prot_mask, int, 0);
 149 MODULE_PARM_DESC(prot_mask, " host protection capabilities mask, def=7 ");
 150
 151
 152 /* raid transport support */
 153 struct raid_template *mpt3sas_raid_template;
 154 struct raid_template *mpt2sas_raid_template;
 155
 156
 157 /**
 158  * struct sense_info - common structure for obtaining sense keys
 159  * @skey: sense key
 160  * @asc: additional sense code
 161  * @ascq: additional sense code qualifier
 162  */
 163 struct sense_info {
 164         u8 skey;
 165         u8 asc;
 166         u8 ascq;
 167 };
 168
 169 #define MPT3SAS_PROCESS_TRIGGER_DIAG (0xFFFB)
 170 #define MPT3SAS_TURN_ON_PFA_LED (0xFFFC)
 171 #define MPT3SAS_PORT_ENABLE_COMPLETE (0xFFFD)
 172 #define MPT3SAS_ABRT_TASK_SET (0xFFFE)
 173 #define MPT3SAS_REMOVE_UNRESPONDING_DEVICES (0xFFFF)
 174 /**
 175  * struct fw_event_work - firmware event struct
 176  * @list: link list framework
 177  * @work: work object (ioc->fault_reset_work_q)
 178  * @ioc: per adapter object
 179  * @device_handle: device handle
 180  * @VF_ID: virtual function id
 181  * @VP_ID: virtual port id
 182  * @ignore: flag meaning this event has been marked to ignore
 183  * @event: firmware event MPI2_EVENT_XXX defined in mpi2_ioc.h
 184  * @refcount: kref for this event
 185  * @event_data: reply event data payload follows
 186  *
 187  * This object stored on ioc->fw_event_list.
 188  */
 189 struct fw_event_work {
 190         struct list_head        list;
 191         struct work_struct      work;
 192
 193         struct MPT3SAS_ADAPTER *ioc;
 194         u16                     device_handle;
 195         u8                      VF_ID;
 196         u8                      VP_ID;
 197         u8                      ignore;
 198         u16                     event;
 199         struct kref             refcount;
 200         char                    event_data[0] __aligned(4);
 201 };
 202
 203 static void fw_event_work_free(struct kref *r)
 204 {
 205         kfree(container_of(r, struct fw_event_work, refcount));
 206 }
 207
 208 static void fw_event_work_get(struct fw_event_work *fw_work)
 209 {
 210         kref_get(&fw_work->refcount);
 211 }
 212
 213 static void fw_event_work_put(struct fw_event_work *fw_work)
 214 {
 215         kref_put(&fw_work->refcount, fw_event_work_free);
 216 }
 217
 218 static struct fw_event_work *alloc_fw_event_work(int len)
 219 {
 220         struct fw_event_work *fw_event;
 221
 222         fw_event = kzalloc(sizeof(*fw_event) + len, GFP_ATOMIC);
 223         if (!fw_event)
 224                 return NULL;
 225
 226         kref_init(&fw_event->refcount);
 227         return fw_event;
 228 }
 229
 230 /**
 231  * struct _scsi_io_transfer - scsi io transfer
 232  * @handle: sas device handle (assigned by firmware)
 233  * @is_raid: flag set for hidden raid components
 234  * @dir: DMA_TO_DEVICE, DMA_FROM_DEVICE,
 235  * @data_length: data transfer length
 236  * @data_dma: dma pointer to data
 237  * @sense: sense data
 238  * @lun: lun number
 239  * @cdb_length: cdb length
 240  * @cdb: cdb contents
 241  * @timeout: timeout for this command
 242  * @VF_ID: virtual function id
 243  * @VP_ID: virtual port id
 244  * @valid_reply: flag set for reply message
 245  * @sense_length: sense length
 246  * @ioc_status: ioc status
 247  * @scsi_state: scsi state
 248  * @scsi_status: scsi staus
 249  * @log_info: log information
 250  * @transfer_length: data length transfer when there is a reply message
 251  *
 252  * Used for sending internal scsi commands to devices within this module.
 253  * Refer to _scsi_send_scsi_io().
 254  */
 255 struct _scsi_io_transfer {
 256         u16     handle;
 257         u8      is_raid;
 258         enum dma_data_direction dir;
 259         u32     data_length;
 260         dma_addr_t data_dma;
 261         u8      sense[SCSI_SENSE_BUFFERSIZE];
 262         u32     lun;
 263         u8      cdb_length;
 264         u8      cdb[32];
 265         u8      timeout;
 266         u8      VF_ID;
 267         u8      VP_ID;
 268         u8      valid_reply;
 269   /* the following bits are only valid when 'valid_reply = 1' */
 270         u32     sense_length;
 271         u16     ioc_status;
 272         u8      scsi_state;
 273         u8      scsi_status;
 274         u32     log_info;
 275         u32     transfer_length;
 276 };
 277
 278 /**
 279  * _scsih_set_debug_level - global setting of ioc->logging_level.
 280  *
 281  * Note: The logging levels are defined in mpt3sas_debug.h.
 282  */
 283 static int
 284 _scsih_set_debug_level(const char *val, struct kernel_param *kp)
 285 {
 286         int ret = param_set_int(val, kp);
 287         struct MPT3SAS_ADAPTER *ioc;
 288
 289         if (ret)
 290                 return ret;
 291
 292         pr_info("setting logging_level(0x%08x)\n", logging_level);
 293         spin_lock(&gioc_lock);
 294         list_for_each_entry(ioc, &mpt3sas_ioc_list, list)
 295                 ioc->logging_level = logging_level;
 296         spin_unlock(&gioc_lock);
 297         return 0;
 298 }
 299 module_param_call(logging_level, _scsih_set_debug_level, param_get_int,
 300         &logging_level, 0644);
 301
 302 /**
 303  * _scsih_srch_boot_sas_address - search based on sas_address
 304  * @sas_address: sas address
 305  * @boot_device: boot device object from bios page 2
 306  *
 307  * Returns 1 when there's a match, 0 means no match.
 308  */
 309 static inline int
 310 _scsih_srch_boot_sas_address(u64 sas_address,
 311         Mpi2BootDeviceSasWwid_t *boot_device)
 312 {
 313         return (sas_address == le64_to_cpu(boot_device->SASAddress)) ?  1 : 0;
 314 }
 315
 316 /**
 317  * _scsih_srch_boot_device_name - search based on device name
 318  * @device_name: device name specified in INDENTIFY fram
 319  * @boot_device: boot device object from bios page 2
 320  *
 321  * Returns 1 when there's a match, 0 means no match.
 322  */
 323 static inline int
 324 _scsih_srch_boot_device_name(u64 device_name,
 325         Mpi2BootDeviceDeviceName_t *boot_device)
 326 {
 327         return (device_name == le64_to_cpu(boot_device->DeviceName)) ? 1 : 0;
 328 }
 329
 330 /**
 331  * _scsih_srch_boot_encl_slot - search based on enclosure_logical_id/slot
 332  * @enclosure_logical_id: enclosure logical id
 333  * @slot_number: slot number
 334  * @boot_device: boot device object from bios page 2
 335  *
 336  * Returns 1 when there's a match, 0 means no match.
 337  */
 338 static inline int
 339 _scsih_srch_boot_encl_slot(u64 enclosure_logical_id, u16 slot_number,
 340         Mpi2BootDeviceEnclosureSlot_t *boot_device)
 341 {
 342         return (enclosure_logical_id == le64_to_cpu(boot_device->
 343             EnclosureLogicalID) && slot_number == le16_to_cpu(boot_device->
 344             SlotNumber)) ? 1 : 0;
 345 }
 346
 347 /**
 348  * _scsih_is_boot_device - search for matching boot device.
 349  * @sas_address: sas address
 350  * @device_name: device name specified in INDENTIFY fram
 351  * @enclosure_logical_id: enclosure logical id
 352  * @slot_number: slot number
 353  * @form: specifies boot device form
 354  * @boot_device: boot device object from bios page 2
 355  *
 356  * Returns 1 when there's a match, 0 means no match.
 357  */
 358 static int
 359 _scsih_is_boot_device(u64 sas_address, u64 device_name,
 360         u64 enclosure_logical_id, u16 slot, u8 form,
 361         Mpi2BiosPage2BootDevice_t *boot_device)
 362 {
 363         int rc = 0;
 364
 365         switch (form) {
 366         case MPI2_BIOSPAGE2_FORM_SAS_WWID:
 367                 if (!sas_address)
 368                         break;
 369                 rc = _scsih_srch_boot_sas_address(
 370                     sas_address, &boot_device->SasWwid);
 371                 break;
 372         case MPI2_BIOSPAGE2_FORM_ENCLOSURE_SLOT:
 373                 if (!enclosure_logical_id)
 374                         break;
 375                 rc = _scsih_srch_boot_encl_slot(
 376                     enclosure_logical_id,
 377                     slot, &boot_device->EnclosureSlot);
 378                 break;
 379         case MPI2_BIOSPAGE2_FORM_DEVICE_NAME:
 380                 if (!device_name)
 381                         break;
 382                 rc = _scsih_srch_boot_device_name(
 383                     device_name, &boot_device->DeviceName);
 384                 break;
 385         case MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED:
 386                 break;
 387         }
 388
 389         return rc;
 390 }
 391
 392 /**
 393  * _scsih_get_sas_address - set the sas_address for given device handle
 394  * @handle: device handle
 395  * @sas_address: sas address
 396  *
 397  * Returns 0 success, non-zero when failure
 398  */
 399 static int
 400 _scsih_get_sas_address(struct MPT3SAS_ADAPTER *ioc, u16 handle,
 401         u64 *sas_address)
 402 {
 403         Mpi2SasDevicePage0_t sas_device_pg0;
 404         Mpi2ConfigReply_t mpi_reply;
 405         u32 ioc_status;
 406
 407         *sas_address = 0;
 408
 409         if (handle <= ioc->sas_hba.num_phys) {
 410                 *sas_address = ioc->sas_hba.sas_address;
 411                 return 0;
 412         }
 413
 414         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
 415             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
 416                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
 417                 __FILE__, __LINE__, __func__);
 418                 return -ENXIO;
 419         }
 420
 421         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
 422         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
 423                 *sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
 424                 return 0;
 425         }
 426
 427         /* we hit this because the given parent handle doesn't exist */
 428         if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
 429                 return -ENXIO;
 430
 431         /* else error case */
 432         pr_err(MPT3SAS_FMT
 433                 "handle(0x%04x), ioc_status(0x%04x), failure at %s:%d/%s()!\n",
 434                 ioc->name, handle, ioc_status,
 435              __FILE__, __LINE__, __func__);
 436         return -EIO;
 437 }
 438
 439 /**
 440  * _scsih_determine_boot_device - determine boot device.
 441  * @ioc: per adapter object
 442  * @device: either sas_device or raid_device object
 443  * @is_raid: [flag] 1 = raid object, 0 = sas object
 444  *
 445  * Determines whether this device should be first reported device to
 446  * to scsi-ml or sas transport, this purpose is for persistent boot device.
 447  * There are primary, alternate, and current entries in bios page 2. The order
 448  * priority is primary, alternate, then current.  This routine saves
 449  * the corresponding device object and is_raid flag in the ioc object.
 450  * The saved data to be used later in _scsih_probe_boot_devices().
 451  */
 452 static void
 453 _scsih_determine_boot_device(struct MPT3SAS_ADAPTER *ioc,
 454         void *device, u8 is_raid)
 455 {
 456         struct _sas_device *sas_device;
 457         struct _raid_device *raid_device;
 458         u64 sas_address;
 459         u64 device_name;
 460         u64 enclosure_logical_id;
 461         u16 slot;
 462
 463          /* only process this function when driver loads */
 464         if (!ioc->is_driver_loading)
 465                 return;
 466
 467          /* no Bios, return immediately */
 468         if (!ioc->bios_pg3.BiosVersion)
 469                 return;
 470
 471         if (!is_raid) {
 472                 sas_device = device;
 473                 sas_address = sas_device->sas_address;
 474                 device_name = sas_device->device_name;
 475                 enclosure_logical_id = sas_device->enclosure_logical_id;
 476                 slot = sas_device->slot;
 477         } else {
 478                 raid_device = device;
 479                 sas_address = raid_device->wwid;
 480                 device_name = 0;
 481                 enclosure_logical_id = 0;
 482                 slot = 0;
 483         }
 484
 485         if (!ioc->req_boot_device.device) {
 486                 if (_scsih_is_boot_device(sas_address, device_name,
 487                     enclosure_logical_id, slot,
 488                     (ioc->bios_pg2.ReqBootDeviceForm &
 489                     MPI2_BIOSPAGE2_FORM_MASK),
 490                     &ioc->bios_pg2.RequestedBootDevice)) {
 491                         dinitprintk(ioc, pr_info(MPT3SAS_FMT
 492                            "%s: req_boot_device(0x%016llx)\n",
 493                             ioc->name, __func__,
 494                             (unsigned long long)sas_address));
 495                         ioc->req_boot_device.device = device;
 496                         ioc->req_boot_device.is_raid = is_raid;
 497                 }
 498         }
 499
 500         if (!ioc->req_alt_boot_device.device) {
 501                 if (_scsih_is_boot_device(sas_address, device_name,
 502                     enclosure_logical_id, slot,
 503                     (ioc->bios_pg2.ReqAltBootDeviceForm &
 504                     MPI2_BIOSPAGE2_FORM_MASK),
 505                     &ioc->bios_pg2.RequestedAltBootDevice)) {
 506                         dinitprintk(ioc, pr_info(MPT3SAS_FMT
 507                            "%s: req_alt_boot_device(0x%016llx)\n",
 508                             ioc->name, __func__,
 509                             (unsigned long long)sas_address));
 510                         ioc->req_alt_boot_device.device = device;
 511                         ioc->req_alt_boot_device.is_raid = is_raid;
 512                 }
 513         }
 514
 515         if (!ioc->current_boot_device.device) {
 516                 if (_scsih_is_boot_device(sas_address, device_name,
 517                     enclosure_logical_id, slot,
 518                     (ioc->bios_pg2.CurrentBootDeviceForm &
 519                     MPI2_BIOSPAGE2_FORM_MASK),
 520                     &ioc->bios_pg2.CurrentBootDevice)) {
 521                         dinitprintk(ioc, pr_info(MPT3SAS_FMT
 522                            "%s: current_boot_device(0x%016llx)\n",
 523                             ioc->name, __func__,
 524                             (unsigned long long)sas_address));
 525                         ioc->current_boot_device.device = device;
 526                         ioc->current_boot_device.is_raid = is_raid;
 527                 }
 528         }
 529 }
 530
 531 static struct _sas_device *
 532 __mpt3sas_get_sdev_from_target(struct MPT3SAS_ADAPTER *ioc,
 533                 struct MPT3SAS_TARGET *tgt_priv)
 534 {
 535         struct _sas_device *ret;
 536
 537         assert_spin_locked(&ioc->sas_device_lock);
 538
 539         ret = tgt_priv->sdev;
 540         if (ret)
 541                 sas_device_get(ret);
 542
 543         return ret;
 544 }
 545
 546 static struct _sas_device *
 547 mpt3sas_get_sdev_from_target(struct MPT3SAS_ADAPTER *ioc,
 548                 struct MPT3SAS_TARGET *tgt_priv)
 549 {
 550         struct _sas_device *ret;
 551         unsigned long flags;
 552
 553         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 554         ret = __mpt3sas_get_sdev_from_target(ioc, tgt_priv);
 555         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 556
 557         return ret;
 558 }
 559
 560
 561 struct _sas_device *
 562 __mpt3sas_get_sdev_by_addr(struct MPT3SAS_ADAPTER *ioc,
 563                                         u64 sas_address)
 564 {
 565         struct _sas_device *sas_device;
 566
 567         assert_spin_locked(&ioc->sas_device_lock);
 568
 569         list_for_each_entry(sas_device, &ioc->sas_device_list, list)
 570                 if (sas_device->sas_address == sas_address)
 571                         goto found_device;
 572
 573         list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
 574                 if (sas_device->sas_address == sas_address)
 575                         goto found_device;
 576
 577         return NULL;
 578
 579 found_device:
 580         sas_device_get(sas_device);
 581         return sas_device;
 582 }
 583
 584 /**
 585  * mpt3sas_get_sdev_by_addr - sas device search
 586  * @ioc: per adapter object
 587  * @sas_address: sas address
 588  * Context: Calling function should acquire ioc->sas_device_lock
 589  *
 590  * This searches for sas_device based on sas_address, then return sas_device
 591  * object.
 592  */
 593 struct _sas_device *
 594 mpt3sas_get_sdev_by_addr(struct MPT3SAS_ADAPTER *ioc,
 595         u64 sas_address)
 596 {
 597         struct _sas_device *sas_device;
 598         unsigned long flags;
 599
 600         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 601         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
 602                         sas_address);
 603         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 604
 605         return sas_device;
 606 }
 607
 608 static struct _sas_device *
 609 __mpt3sas_get_sdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 610 {
 611         struct _sas_device *sas_device;
 612
 613         assert_spin_locked(&ioc->sas_device_lock);
 614
 615         list_for_each_entry(sas_device, &ioc->sas_device_list, list)
 616                 if (sas_device->handle == handle)
 617                         goto found_device;
 618
 619         list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
 620                 if (sas_device->handle == handle)
 621                         goto found_device;
 622
 623         return NULL;
 624
 625 found_device:
 626         sas_device_get(sas_device);
 627         return sas_device;
 628 }
 629
 630 /**
 631  * mpt3sas_get_sdev_by_handle - sas device search
 632  * @ioc: per adapter object
 633  * @handle: sas device handle (assigned by firmware)
 634  * Context: Calling function should acquire ioc->sas_device_lock
 635  *
 636  * This searches for sas_device based on sas_address, then return sas_device
 637  * object.
 638  */
 639 static struct _sas_device *
 640 mpt3sas_get_sdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 641 {
 642         struct _sas_device *sas_device;
 643         unsigned long flags;
 644
 645         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 646         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
 647         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 648
 649         return sas_device;
 650 }
 651
 652 /**
 653  * _scsih_sas_device_remove - remove sas_device from list.
 654  * @ioc: per adapter object
 655  * @sas_device: the sas_device object
 656  * Context: This function will acquire ioc->sas_device_lock.
 657  *
 658  * If sas_device is on the list, remove it and decrement its reference count.
 659  */
 660 static void
 661 _scsih_sas_device_remove(struct MPT3SAS_ADAPTER *ioc,
 662         struct _sas_device *sas_device)
 663 {
 664         unsigned long flags;
 665
 666         if (!sas_device)
 667                 return;
 668         pr_info(MPT3SAS_FMT
 669             "removing handle(0x%04x), sas_addr(0x%016llx)\n",
 670             ioc->name, sas_device->handle,
 671             (unsigned long long) sas_device->sas_address);
 672
 673         if (sas_device->enclosure_handle != 0)
 674                 pr_info(MPT3SAS_FMT
 675                    "removing enclosure logical id(0x%016llx), slot(%d)\n",
 676                    ioc->name, (unsigned long long)
 677                    sas_device->enclosure_logical_id, sas_device->slot);
 678
 679         if (sas_device->connector_name[0] != '\0')
 680                 pr_info(MPT3SAS_FMT
 681                    "removing enclosure level(0x%04x), connector name( %s)\n",
 682                    ioc->name, sas_device->enclosure_level,
 683                    sas_device->connector_name);
 684
 685         /*
 686          * The lock serializes access to the list, but we still need to verify
 687          * that nobody removed the entry while we were waiting on the lock.
 688          */
 689         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 690         if (!list_empty(&sas_device->list)) {
 691                 list_del_init(&sas_device->list);
 692                 sas_device_put(sas_device);
 693         }
 694         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 695 }
 696
 697 /**
 698  * _scsih_device_remove_by_handle - removing device object by handle
 699  * @ioc: per adapter object
 700  * @handle: device handle
 701  *
 702  * Return nothing.
 703  */
 704 static void
 705 _scsih_device_remove_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 706 {
 707         struct _sas_device *sas_device;
 708         unsigned long flags;
 709
 710         if (ioc->shost_recovery)
 711                 return;
 712
 713         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 714         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
 715         if (sas_device) {
 716                 list_del_init(&sas_device->list);
 717                 sas_device_put(sas_device);
 718         }
 719         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 720         if (sas_device) {
 721                 _scsih_remove_device(ioc, sas_device);
 722                 sas_device_put(sas_device);
 723         }
 724 }
 725
 726 /**
 727  * mpt3sas_device_remove_by_sas_address - removing device object by sas address
 728  * @ioc: per adapter object
 729  * @sas_address: device sas_address
 730  *
 731  * Return nothing.
 732  */
 733 void
 734 mpt3sas_device_remove_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
 735         u64 sas_address)
 736 {
 737         struct _sas_device *sas_device;
 738         unsigned long flags;
 739
 740         if (ioc->shost_recovery)
 741                 return;
 742
 743         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 744         sas_device = __mpt3sas_get_sdev_by_addr(ioc, sas_address);
 745         if (sas_device) {
 746                 list_del_init(&sas_device->list);
 747                 sas_device_put(sas_device);
 748         }
 749         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 750         if (sas_device) {
 751                 _scsih_remove_device(ioc, sas_device);
 752                 sas_device_put(sas_device);
 753         }
 754 }
 755
 756 /**
 757  * _scsih_sas_device_add - insert sas_device to the list.
 758  * @ioc: per adapter object
 759  * @sas_device: the sas_device object
 760  * Context: This function will acquire ioc->sas_device_lock.
 761  *
 762  * Adding new object to the ioc->sas_device_list.
 763  */
 764 static void
 765 _scsih_sas_device_add(struct MPT3SAS_ADAPTER *ioc,
 766         struct _sas_device *sas_device)
 767 {
 768         unsigned long flags;
 769
 770         dewtprintk(ioc, pr_info(MPT3SAS_FMT
 771                 "%s: handle(0x%04x), sas_addr(0x%016llx)\n",
 772                 ioc->name, __func__, sas_device->handle,
 773                 (unsigned long long)sas_device->sas_address));
 774
 775         if (sas_device->enclosure_handle != 0)
 776                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 777                     "%s: enclosure logical id(0x%016llx), slot( %d)\n",
 778                     ioc->name, __func__, (unsigned long long)
 779                     sas_device->enclosure_logical_id, sas_device->slot));
 780
 781         if (sas_device->connector_name[0] != '\0')
 782                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 783                     "%s: enclosure level(0x%04x), connector name( %s)\n",
 784                     ioc->name, __func__,
 785                     sas_device->enclosure_level, sas_device->connector_name));
 786
 787         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 788         sas_device_get(sas_device);
 789         list_add_tail(&sas_device->list, &ioc->sas_device_list);
 790         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 791
 792         if (ioc->hide_drives) {
 793                 clear_bit(sas_device->handle, ioc->pend_os_device_add);
 794                 return;
 795         }
 796
 797         if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
 798              sas_device->sas_address_parent)) {
 799                 _scsih_sas_device_remove(ioc, sas_device);
 800         } else if (!sas_device->starget) {
 801                 /*
 802                  * When asyn scanning is enabled, its not possible to remove
 803                  * devices while scanning is turned on due to an oops in
 804                  * scsi_sysfs_add_sdev()->add_device()->sysfs_addrm_start()
 805                  */
 806                 if (!ioc->is_driver_loading) {
 807                         mpt3sas_transport_port_remove(ioc,
 808                             sas_device->sas_address,
 809                             sas_device->sas_address_parent);
 810                         _scsih_sas_device_remove(ioc, sas_device);
 811                 }
 812         } else
 813                 clear_bit(sas_device->handle, ioc->pend_os_device_add);
 814 }
 815
 816 /**
 817  * _scsih_sas_device_init_add - insert sas_device to the list.
 818  * @ioc: per adapter object
 819  * @sas_device: the sas_device object
 820  * Context: This function will acquire ioc->sas_device_lock.
 821  *
 822  * Adding new object at driver load time to the ioc->sas_device_init_list.
 823  */
 824 static void
 825 _scsih_sas_device_init_add(struct MPT3SAS_ADAPTER *ioc,
 826         struct _sas_device *sas_device)
 827 {
 828         unsigned long flags;
 829
 830         dewtprintk(ioc, pr_info(MPT3SAS_FMT
 831                 "%s: handle(0x%04x), sas_addr(0x%016llx)\n", ioc->name,
 832                 __func__, sas_device->handle,
 833                 (unsigned long long)sas_device->sas_address));
 834
 835         if (sas_device->enclosure_handle != 0)
 836                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 837                     "%s: enclosure logical id(0x%016llx), slot( %d)\n",
 838                     ioc->name, __func__, (unsigned long long)
 839                     sas_device->enclosure_logical_id, sas_device->slot));
 840
 841         if (sas_device->connector_name[0] != '\0')
 842                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 843                     "%s: enclosure level(0x%04x), connector name( %s)\n",
 844                     ioc->name, __func__, sas_device->enclosure_level,
 845                     sas_device->connector_name));
 846
 847         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 848         sas_device_get(sas_device);
 849         list_add_tail(&sas_device->list, &ioc->sas_device_init_list);
 850         _scsih_determine_boot_device(ioc, sas_device, 0);
 851         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 852 }
 853
 854 /**
 855  * _scsih_raid_device_find_by_id - raid device search
 856  * @ioc: per adapter object
 857  * @id: sas device target id
 858  * @channel: sas device channel
 859  * Context: Calling function should acquire ioc->raid_device_lock
 860  *
 861  * This searches for raid_device based on target id, then return raid_device
 862  * object.
 863  */
 864 static struct _raid_device *
 865 _scsih_raid_device_find_by_id(struct MPT3SAS_ADAPTER *ioc, int id, int channel)
 866 {
 867         struct _raid_device *raid_device, *r;
 868
 869         r = NULL;
 870         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
 871                 if (raid_device->id == id && raid_device->channel == channel) {
 872                         r = raid_device;
 873                         goto out;
 874                 }
 875         }
 876
 877  out:
 878         return r;
 879 }
 880
 881 /**
 882  * mpt3sas_raid_device_find_by_handle - raid device search
 883  * @ioc: per adapter object
 884  * @handle: sas device handle (assigned by firmware)
 885  * Context: Calling function should acquire ioc->raid_device_lock
 886  *
 887  * This searches for raid_device based on handle, then return raid_device
 888  * object.
 889  */
 890 struct _raid_device *
 891 mpt3sas_raid_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 892 {
 893         struct _raid_device *raid_device, *r;
 894
 895         r = NULL;
 896         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
 897                 if (raid_device->handle != handle)
 898                         continue;
 899                 r = raid_device;
 900                 goto out;
 901         }
 902
 903  out:
 904         return r;
 905 }
 906
 907 /**
 908  * _scsih_raid_device_find_by_wwid - raid device search
 909  * @ioc: per adapter object
 910  * @handle: sas device handle (assigned by firmware)
 911  * Context: Calling function should acquire ioc->raid_device_lock
 912  *
 913  * This searches for raid_device based on wwid, then return raid_device
 914  * object.
 915  */
 916 static struct _raid_device *
 917 _scsih_raid_device_find_by_wwid(struct MPT3SAS_ADAPTER *ioc, u64 wwid)
 918 {
 919         struct _raid_device *raid_device, *r;
 920
 921         r = NULL;
 922         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
 923                 if (raid_device->wwid != wwid)
 924                         continue;
 925                 r = raid_device;
 926                 goto out;
 927         }
 928
 929  out:
 930         return r;
 931 }
 932
 933 /**
 934  * _scsih_raid_device_add - add raid_device object
 935  * @ioc: per adapter object
 936  * @raid_device: raid_device object
 937  *
 938  * This is added to the raid_device_list link list.
 939  */
 940 static void
 941 _scsih_raid_device_add(struct MPT3SAS_ADAPTER *ioc,
 942         struct _raid_device *raid_device)
 943 {
 944         unsigned long flags;
 945
 946         dewtprintk(ioc, pr_info(MPT3SAS_FMT
 947                 "%s: handle(0x%04x), wwid(0x%016llx)\n", ioc->name, __func__,
 948             raid_device->handle, (unsigned long long)raid_device->wwid));
 949
 950         spin_lock_irqsave(&ioc->raid_device_lock, flags);
 951         list_add_tail(&raid_device->list, &ioc->raid_device_list);
 952         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
 953 }
 954
 955 /**
 956  * _scsih_raid_device_remove - delete raid_device object
 957  * @ioc: per adapter object
 958  * @raid_device: raid_device object
 959  *
 960  */
 961 static void
 962 _scsih_raid_device_remove(struct MPT3SAS_ADAPTER *ioc,
 963         struct _raid_device *raid_device)
 964 {
 965         unsigned long flags;
 966
 967         spin_lock_irqsave(&ioc->raid_device_lock, flags);
 968         list_del(&raid_device->list);
 969         kfree(raid_device);
 970         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
 971 }
 972
 973 /**
 974  * mpt3sas_scsih_expander_find_by_handle - expander device search
 975  * @ioc: per adapter object
 976  * @handle: expander handle (assigned by firmware)
 977  * Context: Calling function should acquire ioc->sas_device_lock
 978  *
 979  * This searches for expander device based on handle, then returns the
 980  * sas_node object.
 981  */
 982 struct _sas_node *
 983 mpt3sas_scsih_expander_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 984 {
 985         struct _sas_node *sas_expander, *r;
 986
 987         r = NULL;
 988         list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
 989                 if (sas_expander->handle != handle)
 990                         continue;
 991                 r = sas_expander;
 992                 goto out;
 993         }
 994  out:
 995         return r;
 996 }
 997
 998 /**
 999  * mpt3sas_scsih_expander_find_by_sas_address - expander device search
1000  * @ioc: per adapter object
1001  * @sas_address: sas address
1002  * Context: Calling function should acquire ioc->sas_node_lock.
1003  *
1004  * This searches for expander device based on sas_address, then returns the
1005  * sas_node object.
1006  */
1007 struct _sas_node *
1008 mpt3sas_scsih_expander_find_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
1009         u64 sas_address)
1010 {
1011         struct _sas_node *sas_expander, *r;
1012
1013         r = NULL;
1014         list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
1015                 if (sas_expander->sas_address != sas_address)
1016                         continue;
1017                 r = sas_expander;
1018                 goto out;
1019         }
1020  out:
1021         return r;
1022 }
1023
1024 /**
1025  * _scsih_expander_node_add - insert expander device to the list.
1026  * @ioc: per adapter object
1027  * @sas_expander: the sas_device object
1028  * Context: This function will acquire ioc->sas_node_lock.
1029  *
1030  * Adding new object to the ioc->sas_expander_list.
1031  *
1032  * Return nothing.
1033  */
1034 static void
1035 _scsih_expander_node_add(struct MPT3SAS_ADAPTER *ioc,
1036         struct _sas_node *sas_expander)
1037 {
1038         unsigned long flags;
1039
1040         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1041         list_add_tail(&sas_expander->list, &ioc->sas_expander_list);
1042         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1043 }
1044
1045 /**
1046  * _scsih_is_end_device - determines if device is an end device
1047  * @device_info: bitfield providing information about the device.
1048  * Context: none
1049  *
1050  * Returns 1 if end device.
1051  */
1052 static int
1053 _scsih_is_end_device(u32 device_info)
1054 {
1055         if (device_info & MPI2_SAS_DEVICE_INFO_END_DEVICE &&
1056                 ((device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) |
1057                 (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET) |
1058                 (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)))
1059                 return 1;
1060         else
1061                 return 0;
1062 }
1063
1064 /**
1065  * _scsih_scsi_lookup_get - returns scmd entry
1066  * @ioc: per adapter object
1067  * @smid: system request message index
1068  *
1069  * Returns the smid stored scmd pointer.
1070  */
1071 static struct scsi_cmnd *
1072 _scsih_scsi_lookup_get(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1073 {
1074         return ioc->scsi_lookup[smid - 1].scmd;
1075 }
1076
1077 /**
1078  * __scsih_scsi_lookup_get_clear - returns scmd entry without
1079  *                                              holding any lock.
1080  * @ioc: per adapter object
1081  * @smid: system request message index
1082  *
1083  * Returns the smid stored scmd pointer.
1084  * Then will dereference the stored scmd pointer.
1085  */
1086 static inline struct scsi_cmnd *
1087 __scsih_scsi_lookup_get_clear(struct MPT3SAS_ADAPTER *ioc,
1088                 u16 smid)
1089 {
1090         struct scsi_cmnd *scmd = NULL;
1091
1092         swap(scmd, ioc->scsi_lookup[smid - 1].scmd);
1093
1094         return scmd;
1095 }
1096
1097 /**
1098  * _scsih_scsi_lookup_get_clear - returns scmd entry
1099  * @ioc: per adapter object
1100  * @smid: system request message index
1101  *
1102  * Returns the smid stored scmd pointer.
1103  * Then will derefrence the stored scmd pointer.
1104  */
1105 static inline struct scsi_cmnd *
1106 _scsih_scsi_lookup_get_clear(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1107 {
1108         unsigned long flags;
1109         struct scsi_cmnd *scmd;
1110
1111         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1112         scmd = __scsih_scsi_lookup_get_clear(ioc, smid);
1113         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1114
1115         return scmd;
1116 }
1117
1118 /**
1119  * _scsih_scsi_lookup_find_by_scmd - scmd lookup
1120  * @ioc: per adapter object
1121  * @smid: system request message index
1122  * @scmd: pointer to scsi command object
1123  * Context: This function will acquire ioc->scsi_lookup_lock.
1124  *
1125  * This will search for a scmd pointer in the scsi_lookup array,
1126  * returning the revelent smid.  A returned value of zero means invalid.
1127  */
1128 static u16
1129 _scsih_scsi_lookup_find_by_scmd(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd
1130         *scmd)
1131 {
1132         u16 smid;
1133         unsigned long   flags;
1134         int i;
1135
1136         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1137         smid = 0;
1138         for (i = 0; i < ioc->scsiio_depth; i++) {
1139                 if (ioc->scsi_lookup[i].scmd == scmd) {
1140                         smid = ioc->scsi_lookup[i].smid;
1141                         goto out;
1142                 }
1143         }
1144  out:
1145         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1146         return smid;
1147 }
1148
1149 /**
1150  * _scsih_scsi_lookup_find_by_target - search for matching channel:id
1151  * @ioc: per adapter object
1152  * @id: target id
1153  * @channel: channel
1154  * Context: This function will acquire ioc->scsi_lookup_lock.
1155  *
1156  * This will search for a matching channel:id in the scsi_lookup array,
1157  * returning 1 if found.
1158  */
1159 static u8
1160 _scsih_scsi_lookup_find_by_target(struct MPT3SAS_ADAPTER *ioc, int id,
1161         int channel)
1162 {
1163         u8 found;
1164         unsigned long   flags;
1165         int i;
1166
1167         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1168         found = 0;
1169         for (i = 0 ; i < ioc->scsiio_depth; i++) {
1170                 if (ioc->scsi_lookup[i].scmd &&
1171                     (ioc->scsi_lookup[i].scmd->device->id == id &&
1172                     ioc->scsi_lookup[i].scmd->device->channel == channel)) {
1173                         found = 1;
1174                         goto out;
1175                 }
1176         }
1177  out:
1178         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1179         return found;
1180 }
1181
1182 /**
1183  * _scsih_scsi_lookup_find_by_lun - search for matching channel:id:lun
1184  * @ioc: per adapter object
1185  * @id: target id
1186  * @lun: lun number
1187  * @channel: channel
1188  * Context: This function will acquire ioc->scsi_lookup_lock.
1189  *
1190  * This will search for a matching channel:id:lun in the scsi_lookup array,
1191  * returning 1 if found.
1192  */
1193 static u8
1194 _scsih_scsi_lookup_find_by_lun(struct MPT3SAS_ADAPTER *ioc, int id,
1195         unsigned int lun, int channel)
1196 {
1197         u8 found;
1198         unsigned long   flags;
1199         int i;
1200
1201         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1202         found = 0;
1203         for (i = 0 ; i < ioc->scsiio_depth; i++) {
1204                 if (ioc->scsi_lookup[i].scmd &&
1205                     (ioc->scsi_lookup[i].scmd->device->id == id &&
1206                     ioc->scsi_lookup[i].scmd->device->channel == channel &&
1207                     ioc->scsi_lookup[i].scmd->device->lun == lun)) {
1208                         found = 1;
1209                         goto out;
1210                 }
1211         }
1212  out:
1213         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1214         return found;
1215 }
1216
1217 /**
1218  * scsih_change_queue_depth - setting device queue depth
1219  * @sdev: scsi device struct
1220  * @qdepth: requested queue depth
1221  *
1222  * Returns queue depth.
1223  */
1224 static int
1225 scsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
1226 {
1227         struct Scsi_Host *shost = sdev->host;
1228         int max_depth;
1229         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1230         struct MPT3SAS_DEVICE *sas_device_priv_data;
1231         struct MPT3SAS_TARGET *sas_target_priv_data;
1232         struct _sas_device *sas_device;
1233         unsigned long flags;
1234
1235         max_depth = shost->can_queue;
1236
1237         /* limit max device queue for SATA to 32 */
1238         sas_device_priv_data = sdev->hostdata;
1239         if (!sas_device_priv_data)
1240                 goto not_sata;
1241         sas_target_priv_data = sas_device_priv_data->sas_target;
1242         if (!sas_target_priv_data)
1243                 goto not_sata;
1244         if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME))
1245                 goto not_sata;
1246
1247         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1248         sas_device = __mpt3sas_get_sdev_from_target(ioc, sas_target_priv_data);
1249         if (sas_device) {
1250                 if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1251                         max_depth = MPT3SAS_SATA_QUEUE_DEPTH;
1252
1253                 sas_device_put(sas_device);
1254         }
1255         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1256
1257  not_sata:
1258
1259         if (!sdev->tagged_supported)
1260                 max_depth = 1;
1261         if (qdepth > max_depth)
1262                 qdepth = max_depth;
1263         return scsi_change_queue_depth(sdev, qdepth);
1264 }
1265
1266 /**
1267  * scsih_target_alloc - target add routine
1268  * @starget: scsi target struct
1269  *
1270  * Returns 0 if ok. Any other return is assumed to be an error and
1271  * the device is ignored.
1272  */
1273 static int
1274 scsih_target_alloc(struct scsi_target *starget)
1275 {
1276         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1277         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1278         struct MPT3SAS_TARGET *sas_target_priv_data;
1279         struct _sas_device *sas_device;
1280         struct _raid_device *raid_device;
1281         unsigned long flags;
1282         struct sas_rphy *rphy;
1283
1284         sas_target_priv_data = kzalloc(sizeof(*sas_target_priv_data),
1285                                        GFP_KERNEL);
1286         if (!sas_target_priv_data)
1287                 return -ENOMEM;
1288
1289         starget->hostdata = sas_target_priv_data;
1290         sas_target_priv_data->starget = starget;
1291         sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
1292
1293         /* RAID volumes */
1294         if (starget->channel == RAID_CHANNEL) {
1295                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1296                 raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
1297                     starget->channel);
1298                 if (raid_device) {
1299                         sas_target_priv_data->handle = raid_device->handle;
1300                         sas_target_priv_data->sas_address = raid_device->wwid;
1301                         sas_target_priv_data->flags |= MPT_TARGET_FLAGS_VOLUME;
1302                         if (ioc->is_warpdrive)
1303                                 sas_target_priv_data->raid_device = raid_device;
1304                         raid_device->starget = starget;
1305                 }
1306                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1307                 return 0;
1308         }
1309
1310         /* sas/sata devices */
1311         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1312         rphy = dev_to_rphy(starget->dev.parent);
1313         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1314            rphy->identify.sas_address);
1315
1316         if (sas_device) {
1317                 sas_target_priv_data->handle = sas_device->handle;
1318                 sas_target_priv_data->sas_address = sas_device->sas_address;
1319                 sas_target_priv_data->sdev = sas_device;
1320                 sas_device->starget = starget;
1321                 sas_device->id = starget->id;
1322                 sas_device->channel = starget->channel;
1323                 if (test_bit(sas_device->handle, ioc->pd_handles))
1324                         sas_target_priv_data->flags |=
1325                             MPT_TARGET_FLAGS_RAID_COMPONENT;
1326                 if (sas_device->fast_path)
1327                         sas_target_priv_data->flags |= MPT_TARGET_FASTPATH_IO;
1328         }
1329         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1330
1331         return 0;
1332 }
1333
1334 /**
1335  * scsih_target_destroy - target destroy routine
1336  * @starget: scsi target struct
1337  *
1338  * Returns nothing.
1339  */
1340 static void
1341 scsih_target_destroy(struct scsi_target *starget)
1342 {
1343         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1344         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1345         struct MPT3SAS_TARGET *sas_target_priv_data;
1346         struct _sas_device *sas_device;
1347         struct _raid_device *raid_device;
1348         unsigned long flags;
1349
1350         sas_target_priv_data = starget->hostdata;
1351         if (!sas_target_priv_data)
1352                 return;
1353
1354         if (starget->channel == RAID_CHANNEL) {
1355                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1356                 raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
1357                     starget->channel);
1358                 if (raid_device) {
1359                         raid_device->starget = NULL;
1360                         raid_device->sdev = NULL;
1361                 }
1362                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1363                 goto out;
1364         }
1365
1366         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1367         sas_device = __mpt3sas_get_sdev_from_target(ioc, sas_target_priv_data);
1368         if (sas_device && (sas_device->starget == starget) &&
1369             (sas_device->id == starget->id) &&
1370             (sas_device->channel == starget->channel))
1371                 sas_device->starget = NULL;
1372
1373         if (sas_device) {
1374                 /*
1375                  * Corresponding get() is in _scsih_target_alloc()
1376                  */
1377                 sas_target_priv_data->sdev = NULL;
1378                 sas_device_put(sas_device);
1379
1380                 sas_device_put(sas_device);
1381         }
1382         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1383
1384  out:
1385         kfree(sas_target_priv_data);
1386         starget->hostdata = NULL;
1387 }
1388
1389 /**
1390  * scsih_slave_alloc - device add routine
1391  * @sdev: scsi device struct
1392  *
1393  * Returns 0 if ok. Any other return is assumed to be an error and
1394  * the device is ignored.
1395  */
1396 static int
1397 scsih_slave_alloc(struct scsi_device *sdev)
1398 {
1399         struct Scsi_Host *shost;
1400         struct MPT3SAS_ADAPTER *ioc;
1401         struct MPT3SAS_TARGET *sas_target_priv_data;
1402         struct MPT3SAS_DEVICE *sas_device_priv_data;
1403         struct scsi_target *starget;
1404         struct _raid_device *raid_device;
1405         struct _sas_device *sas_device;
1406         unsigned long flags;
1407
1408         sas_device_priv_data = kzalloc(sizeof(*sas_device_priv_data),
1409                                        GFP_KERNEL);
1410         if (!sas_device_priv_data)
1411                 return -ENOMEM;
1412
1413         sas_device_priv_data->lun = sdev->lun;
1414         sas_device_priv_data->flags = MPT_DEVICE_FLAGS_INIT;
1415
1416         starget = scsi_target(sdev);
1417         sas_target_priv_data = starget->hostdata;
1418         sas_target_priv_data->num_luns++;
1419         sas_device_priv_data->sas_target = sas_target_priv_data;
1420         sdev->hostdata = sas_device_priv_data;
1421         if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT))
1422                 sdev->no_uld_attach = 1;
1423
1424         shost = dev_to_shost(&starget->dev);
1425         ioc = shost_priv(shost);
1426         if (starget->channel == RAID_CHANNEL) {
1427                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1428                 raid_device = _scsih_raid_device_find_by_id(ioc,
1429                     starget->id, starget->channel);
1430                 if (raid_device)
1431                         raid_device->sdev = sdev; /* raid is single lun */
1432                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1433         }
1434
1435         if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
1436                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1437                 sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1438                                         sas_target_priv_data->sas_address);
1439                 if (sas_device && (sas_device->starget == NULL)) {
1440                         sdev_printk(KERN_INFO, sdev,
1441                         "%s : sas_device->starget set to starget @ %d\n",
1442                              __func__, __LINE__);
1443                         sas_device->starget = starget;
1444                 }
1445
1446                 if (sas_device)
1447                         sas_device_put(sas_device);
1448
1449                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1450         }
1451
1452         return 0;
1453 }
1454
1455 /**
1456  * scsih_slave_destroy - device destroy routine
1457  * @sdev: scsi device struct
1458  *
1459  * Returns nothing.
1460  */
1461 static void
1462 scsih_slave_destroy(struct scsi_device *sdev)
1463 {
1464         struct MPT3SAS_TARGET *sas_target_priv_data;
1465         struct scsi_target *starget;
1466         struct Scsi_Host *shost;
1467         struct MPT3SAS_ADAPTER *ioc;
1468         struct _sas_device *sas_device;
1469         unsigned long flags;
1470
1471         if (!sdev->hostdata)
1472                 return;
1473
1474         starget = scsi_target(sdev);
1475         sas_target_priv_data = starget->hostdata;
1476         sas_target_priv_data->num_luns--;
1477
1478         shost = dev_to_shost(&starget->dev);
1479         ioc = shost_priv(shost);
1480
1481         if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
1482                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1483                 sas_device = __mpt3sas_get_sdev_from_target(ioc,
1484                                 sas_target_priv_data);
1485                 if (sas_device && !sas_target_priv_data->num_luns)
1486                         sas_device->starget = NULL;
1487
1488                 if (sas_device)
1489                         sas_device_put(sas_device);
1490                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1491         }
1492
1493         kfree(sdev->hostdata);
1494         sdev->hostdata = NULL;
1495 }
1496
1497 /**
1498  * _scsih_display_sata_capabilities - sata capabilities
1499  * @ioc: per adapter object
1500  * @handle: device handle
1501  * @sdev: scsi device struct
1502  */
1503 static void
1504 _scsih_display_sata_capabilities(struct MPT3SAS_ADAPTER *ioc,
1505         u16 handle, struct scsi_device *sdev)
1506 {
1507         Mpi2ConfigReply_t mpi_reply;
1508         Mpi2SasDevicePage0_t sas_device_pg0;
1509         u32 ioc_status;
1510         u16 flags;
1511         u32 device_info;
1512
1513         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
1514             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
1515                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1516                     ioc->name, __FILE__, __LINE__, __func__);
1517                 return;
1518         }
1519
1520         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1521             MPI2_IOCSTATUS_MASK;
1522         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1523                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1524                     ioc->name, __FILE__, __LINE__, __func__);
1525                 return;
1526         }
1527
1528         flags = le16_to_cpu(sas_device_pg0.Flags);
1529         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
1530
1531         sdev_printk(KERN_INFO, sdev,
1532             "atapi(%s), ncq(%s), asyn_notify(%s), smart(%s), fua(%s), "
1533             "sw_preserve(%s)\n",
1534             (device_info & MPI2_SAS_DEVICE_INFO_ATAPI_DEVICE) ? "y" : "n",
1535             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_NCQ_SUPPORTED) ? "y" : "n",
1536             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_ASYNCHRONOUS_NOTIFY) ? "y" :
1537             "n",
1538             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SMART_SUPPORTED) ? "y" : "n",
1539             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_FUA_SUPPORTED) ? "y" : "n",
1540             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SW_PRESERVE) ? "y" : "n");
1541 }
1542
1543 /*
1544  * raid transport support -
1545  * Enabled for SLES11 and newer, in older kernels the driver will panic when
1546  * unloading the driver followed by a load - I believe that the subroutine
1547  * raid_class_release() is not cleaning up properly.
1548  */
1549
1550 /**
1551  * scsih_is_raid - return boolean indicating device is raid volume
1552  * @dev the device struct object
1553  */
1554 static int
1555 scsih_is_raid(struct device *dev)
1556 {
1557         struct scsi_device *sdev = to_scsi_device(dev);
1558         struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1559
1560         if (ioc->is_warpdrive)
1561                 return 0;
1562         return (sdev->channel == RAID_CHANNEL) ? 1 : 0;
1563 }
1564
1565 /**
1566  * scsih_get_resync - get raid volume resync percent complete
1567  * @dev the device struct object
1568  */
1569 static void
1570 scsih_get_resync(struct device *dev)
1571 {
1572         struct scsi_device *sdev = to_scsi_device(dev);
1573         struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1574         static struct _raid_device *raid_device;
1575         unsigned long flags;
1576         Mpi2RaidVolPage0_t vol_pg0;
1577         Mpi2ConfigReply_t mpi_reply;
1578         u32 volume_status_flags;
1579         u8 percent_complete;
1580         u16 handle;
1581
1582         percent_complete = 0;
1583         handle = 0;
1584         if (ioc->is_warpdrive)
1585                 goto out;
1586
1587         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1588         raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
1589             sdev->channel);
1590         if (raid_device) {
1591                 handle = raid_device->handle;
1592                 percent_complete = raid_device->percent_complete;
1593         }
1594         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1595
1596         if (!handle)
1597                 goto out;
1598
1599         if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
1600              MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
1601              sizeof(Mpi2RaidVolPage0_t))) {
1602                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1603                     ioc->name, __FILE__, __LINE__, __func__);
1604                 percent_complete = 0;
1605                 goto out;
1606         }
1607
1608         volume_status_flags = le32_to_cpu(vol_pg0.VolumeStatusFlags);
1609         if (!(volume_status_flags &
1610             MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS))
1611                 percent_complete = 0;
1612
1613  out:
1614
1615         switch (ioc->hba_mpi_version_belonged) {
1616         case MPI2_VERSION:
1617                 raid_set_resync(mpt2sas_raid_template, dev, percent_complete);
1618                 break;
1619         case MPI25_VERSION:
1620         case MPI26_VERSION:
1621                 raid_set_resync(mpt3sas_raid_template, dev, percent_complete);
1622                 break;
1623         }
1624 }
1625
1626 /**
1627  * scsih_get_state - get raid volume level
1628  * @dev the device struct object
1629  */
1630 static void
1631 scsih_get_state(struct device *dev)
1632 {
1633         struct scsi_device *sdev = to_scsi_device(dev);
1634         struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1635         static struct _raid_device *raid_device;
1636         unsigned long flags;
1637         Mpi2RaidVolPage0_t vol_pg0;
1638         Mpi2ConfigReply_t mpi_reply;
1639         u32 volstate;
1640         enum raid_state state = RAID_STATE_UNKNOWN;
1641         u16 handle = 0;
1642
1643         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1644         raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
1645             sdev->channel);
1646         if (raid_device)
1647                 handle = raid_device->handle;
1648         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1649
1650         if (!raid_device)
1651                 goto out;
1652
1653         if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
1654              MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
1655              sizeof(Mpi2RaidVolPage0_t))) {
1656                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1657                     ioc->name, __FILE__, __LINE__, __func__);
1658                 goto out;
1659         }
1660
1661         volstate = le32_to_cpu(vol_pg0.VolumeStatusFlags);
1662         if (volstate & MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS) {
1663                 state = RAID_STATE_RESYNCING;
1664                 goto out;
1665         }
1666
1667         switch (vol_pg0.VolumeState) {
1668         case MPI2_RAID_VOL_STATE_OPTIMAL:
1669         case MPI2_RAID_VOL_STATE_ONLINE:
1670                 state = RAID_STATE_ACTIVE;
1671                 break;
1672         case  MPI2_RAID_VOL_STATE_DEGRADED:
1673                 state = RAID_STATE_DEGRADED;
1674                 break;
1675         case MPI2_RAID_VOL_STATE_FAILED:
1676         case MPI2_RAID_VOL_STATE_MISSING:
1677                 state = RAID_STATE_OFFLINE;
1678                 break;
1679         }
1680  out:
1681         switch (ioc->hba_mpi_version_belonged) {
1682         case MPI2_VERSION:
1683                 raid_set_state(mpt2sas_raid_template, dev, state);
1684                 break;
1685         case MPI25_VERSION:
1686         case MPI26_VERSION:
1687                 raid_set_state(mpt3sas_raid_template, dev, state);
1688                 break;
1689         }
1690 }
1691
1692 /**
1693  * _scsih_set_level - set raid level
1694  * @sdev: scsi device struct
1695  * @volume_type: volume type
1696  */
1697 static void
1698 _scsih_set_level(struct MPT3SAS_ADAPTER *ioc,
1699         struct scsi_device *sdev, u8 volume_type)
1700 {
1701         enum raid_level level = RAID_LEVEL_UNKNOWN;
1702
1703         switch (volume_type) {
1704         case MPI2_RAID_VOL_TYPE_RAID0:
1705                 level = RAID_LEVEL_0;
1706                 break;
1707         case MPI2_RAID_VOL_TYPE_RAID10:
1708                 level = RAID_LEVEL_10;
1709                 break;
1710         case MPI2_RAID_VOL_TYPE_RAID1E:
1711                 level = RAID_LEVEL_1E;
1712                 break;
1713         case MPI2_RAID_VOL_TYPE_RAID1:
1714                 level = RAID_LEVEL_1;
1715                 break;
1716         }
1717
1718         switch (ioc->hba_mpi_version_belonged) {
1719         case MPI2_VERSION:
1720                 raid_set_level(mpt2sas_raid_template,
1721                         &sdev->sdev_gendev, level);
1722                 break;
1723         case MPI25_VERSION:
1724         case MPI26_VERSION:
1725                 raid_set_level(mpt3sas_raid_template,
1726                         &sdev->sdev_gendev, level);
1727                 break;
1728         }
1729 }
1730
1731
1732 /**
1733  * _scsih_get_volume_capabilities - volume capabilities
1734  * @ioc: per adapter object
1735  * @sas_device: the raid_device object
1736  *
1737  * Returns 0 for success, else 1
1738  */
1739 static int
1740 _scsih_get_volume_capabilities(struct MPT3SAS_ADAPTER *ioc,
1741         struct _raid_device *raid_device)
1742 {
1743         Mpi2RaidVolPage0_t *vol_pg0;
1744         Mpi2RaidPhysDiskPage0_t pd_pg0;
1745         Mpi2SasDevicePage0_t sas_device_pg0;
1746         Mpi2ConfigReply_t mpi_reply;
1747         u16 sz;
1748         u8 num_pds;
1749
1750         if ((mpt3sas_config_get_number_pds(ioc, raid_device->handle,
1751             &num_pds)) || !num_pds) {
1752                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1753                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1754                     __func__));
1755                 return 1;
1756         }
1757
1758         raid_device->num_pds = num_pds;
1759         sz = offsetof(Mpi2RaidVolPage0_t, PhysDisk) + (num_pds *
1760             sizeof(Mpi2RaidVol0PhysDisk_t));
1761         vol_pg0 = kzalloc(sz, GFP_KERNEL);
1762         if (!vol_pg0) {
1763                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1764                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1765                     __func__));
1766                 return 1;
1767         }
1768
1769         if ((mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, vol_pg0,
1770              MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle, sz))) {
1771                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1772                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1773                     __func__));
1774                 kfree(vol_pg0);
1775                 return 1;
1776         }
1777
1778         raid_device->volume_type = vol_pg0->VolumeType;
1779
1780         /* figure out what the underlying devices are by
1781          * obtaining the device_info bits for the 1st device
1782          */
1783         if (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
1784             &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_PHYSDISKNUM,
1785             vol_pg0->PhysDisk[0].PhysDiskNum))) {
1786                 if (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
1787                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
1788                     le16_to_cpu(pd_pg0.DevHandle)))) {
1789                         raid_device->device_info =
1790                             le32_to_cpu(sas_device_pg0.DeviceInfo);
1791                 }
1792         }
1793
1794         kfree(vol_pg0);
1795         return 0;
1796 }
1797
1798 /**
1799  * _scsih_enable_tlr - setting TLR flags
1800  * @ioc: per adapter object
1801  * @sdev: scsi device struct
1802  *
1803  * Enabling Transaction Layer Retries for tape devices when
1804  * vpd page 0x90 is present
1805  *
1806  */
1807 static void
1808 _scsih_enable_tlr(struct MPT3SAS_ADAPTER *ioc, struct scsi_device *sdev)
1809 {
1810
1811         /* only for TAPE */
1812         if (sdev->type != TYPE_TAPE)
1813                 return;
1814
1815         if (!(ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR))
1816                 return;
1817
1818         sas_enable_tlr(sdev);
1819         sdev_printk(KERN_INFO, sdev, "TLR %s\n",
1820             sas_is_tlr_enabled(sdev) ? "Enabled" : "Disabled");
1821         return;
1822
1823 }
1824
1825 /**
1826  * scsih_slave_configure - device configure routine.
1827  * @sdev: scsi device struct
1828  *
1829  * Returns 0 if ok. Any other return is assumed to be an error and
1830  * the device is ignored.
1831  */
1832 static int
1833 scsih_slave_configure(struct scsi_device *sdev)
1834 {
1835         struct Scsi_Host *shost = sdev->host;
1836         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1837         struct MPT3SAS_DEVICE *sas_device_priv_data;
1838         struct MPT3SAS_TARGET *sas_target_priv_data;
1839         struct _sas_device *sas_device;
1840         struct _raid_device *raid_device;
1841         unsigned long flags;
1842         int qdepth;
1843         u8 ssp_target = 0;
1844         char *ds = "";
1845         char *r_level = "";
1846         u16 handle, volume_handle = 0;
1847         u64 volume_wwid = 0;
1848
1849         qdepth = 1;
1850         sas_device_priv_data = sdev->hostdata;
1851         sas_device_priv_data->configured_lun = 1;
1852         sas_device_priv_data->flags &= ~MPT_DEVICE_FLAGS_INIT;
1853         sas_target_priv_data = sas_device_priv_data->sas_target;
1854         handle = sas_target_priv_data->handle;
1855
1856         /* raid volume handling */
1857         if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME) {
1858
1859                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1860                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
1861                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1862                 if (!raid_device) {
1863                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1864                             "failure at %s:%d/%s()!\n", ioc->name, __FILE__,
1865                             __LINE__, __func__));
1866                         return 1;
1867                 }
1868
1869                 if (_scsih_get_volume_capabilities(ioc, raid_device)) {
1870                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1871                             "failure at %s:%d/%s()!\n", ioc->name, __FILE__,
1872                             __LINE__, __func__));
1873                         return 1;
1874                 }
1875
1876                 /*
1877                  * WARPDRIVE: Initialize the required data for Direct IO
1878                  */
1879                 mpt3sas_init_warpdrive_properties(ioc, raid_device);
1880
1881                 /* RAID Queue Depth Support
1882                  * IS volume = underlying qdepth of drive type, either
1883                  *    MPT3SAS_SAS_QUEUE_DEPTH or MPT3SAS_SATA_QUEUE_DEPTH
1884                  * IM/IME/R10 = 128 (MPT3SAS_RAID_QUEUE_DEPTH)
1885                  */
1886                 if (raid_device->device_info &
1887                     MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
1888                         qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
1889                         ds = "SSP";
1890                 } else {
1891                         qdepth = MPT3SAS_SATA_QUEUE_DEPTH;
1892                          if (raid_device->device_info &
1893                             MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1894                                 ds = "SATA";
1895                         else
1896                                 ds = "STP";
1897                 }
1898
1899                 switch (raid_device->volume_type) {
1900                 case MPI2_RAID_VOL_TYPE_RAID0:
1901                         r_level = "RAID0";
1902                         break;
1903                 case MPI2_RAID_VOL_TYPE_RAID1E:
1904                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1905                         if (ioc->manu_pg10.OEMIdentifier &&
1906                             (le32_to_cpu(ioc->manu_pg10.GenericFlags0) &
1907                             MFG10_GF0_R10_DISPLAY) &&
1908                             !(raid_device->num_pds % 2))
1909                                 r_level = "RAID10";
1910                         else
1911                                 r_level = "RAID1E";
1912                         break;
1913                 case MPI2_RAID_VOL_TYPE_RAID1:
1914                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1915                         r_level = "RAID1";
1916                         break;
1917                 case MPI2_RAID_VOL_TYPE_RAID10:
1918                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1919                         r_level = "RAID10";
1920                         break;
1921                 case MPI2_RAID_VOL_TYPE_UNKNOWN:
1922                 default:
1923                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1924                         r_level = "RAIDX";
1925                         break;
1926                 }
1927
1928                 if (!ioc->hide_ir_msg)
1929                         sdev_printk(KERN_INFO, sdev,
1930                            "%s: handle(0x%04x), wwid(0x%016llx),"
1931                             " pd_count(%d), type(%s)\n",
1932                             r_level, raid_device->handle,
1933                             (unsigned long long)raid_device->wwid,
1934                             raid_device->num_pds, ds);
1935
1936                 if (shost->max_sectors > MPT3SAS_RAID_MAX_SECTORS) {
1937                         blk_queue_max_hw_sectors(sdev->request_queue,
1938                                                 MPT3SAS_RAID_MAX_SECTORS);
1939                         sdev_printk(KERN_INFO, sdev,
1940                                         "Set queue's max_sector to: %u\n",
1941                                                 MPT3SAS_RAID_MAX_SECTORS);
1942                 }
1943
1944                 scsih_change_queue_depth(sdev, qdepth);
1945
1946                 /* raid transport support */
1947                 if (!ioc->is_warpdrive)
1948                         _scsih_set_level(ioc, sdev, raid_device->volume_type);
1949                 return 0;
1950         }
1951
1952         /* non-raid handling */
1953         if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1954                 if (mpt3sas_config_get_volume_handle(ioc, handle,
1955                     &volume_handle)) {
1956                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1957                             "failure at %s:%d/%s()!\n", ioc->name,
1958                             __FILE__, __LINE__, __func__));
1959                         return 1;
1960                 }
1961                 if (volume_handle && mpt3sas_config_get_volume_wwid(ioc,
1962                     volume_handle, &volume_wwid)) {
1963                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1964                             "failure at %s:%d/%s()!\n", ioc->name,
1965                             __FILE__, __LINE__, __func__));
1966                         return 1;
1967                 }
1968         }
1969
1970         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1971         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1972            sas_device_priv_data->sas_target->sas_address);
1973         if (!sas_device) {
1974                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1975                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1976                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1977                     __func__));
1978                 return 1;
1979         }
1980
1981         sas_device->volume_handle = volume_handle;
1982         sas_device->volume_wwid = volume_wwid;
1983         if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
1984                 qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
1985                 ssp_target = 1;
1986                 if (sas_device->device_info &
1987                                 MPI2_SAS_DEVICE_INFO_SEP) {
1988                         sdev_printk(KERN_WARNING, sdev,
1989                         "set ignore_delay_remove for handle(0x%04x)\n",
1990                         sas_device_priv_data->sas_target->handle);
1991                         sas_device_priv_data->ignore_delay_remove = 1;
1992                         ds = "SES";
1993                 } else
1994                         ds = "SSP";
1995         } else {
1996                 qdepth = MPT3SAS_SATA_QUEUE_DEPTH;
1997                 if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
1998                         ds = "STP";
1999                 else if (sas_device->device_info &
2000                     MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
2001                         ds = "SATA";
2002         }
2003
2004         sdev_printk(KERN_INFO, sdev, "%s: handle(0x%04x), " \
2005             "sas_addr(0x%016llx), phy(%d), device_name(0x%016llx)\n",
2006             ds, handle, (unsigned long long)sas_device->sas_address,
2007             sas_device->phy, (unsigned long long)sas_device->device_name);
2008         if (sas_device->enclosure_handle != 0)
2009                 sdev_printk(KERN_INFO, sdev,
2010                      "%s: enclosure_logical_id(0x%016llx), slot(%d)\n",
2011                      ds, (unsigned long long)
2012                      sas_device->enclosure_logical_id, sas_device->slot);
2013         if (sas_device->connector_name[0] != '\0')
2014                 sdev_printk(KERN_INFO, sdev,
2015                      "%s: enclosure level(0x%04x), connector name( %s)\n",
2016                      ds, sas_device->enclosure_level,
2017                      sas_device->connector_name);
2018
2019         sas_device_put(sas_device);
2020         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
2021
2022         if (!ssp_target)
2023                 _scsih_display_sata_capabilities(ioc, handle, sdev);
2024
2025
2026         scsih_change_queue_depth(sdev, qdepth);
2027
2028         if (ssp_target) {
2029                 sas_read_port_mode_page(sdev);
2030                 _scsih_enable_tlr(ioc, sdev);
2031         }
2032
2033         return 0;
2034 }
2035
2036 /**
2037  * scsih_bios_param - fetch head, sector, cylinder info for a disk
2038  * @sdev: scsi device struct
2039  * @bdev: pointer to block device context
2040  * @capacity: device size (in 512 byte sectors)
2041  * @params: three element array to place output:
2042  *              params[0] number of heads (max 255)
2043  *              params[1] number of sectors (max 63)
2044  *              params[2] number of cylinders
2045  *
2046  * Return nothing.
2047  */
2048 static int
2049 scsih_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2050         sector_t capacity, int params[])
2051 {
2052         int             heads;
2053         int             sectors;
2054         sector_t        cylinders;
2055         ulong           dummy;
2056
2057         heads = 64;
2058         sectors = 32;
2059
2060         dummy = heads * sectors;
2061         cylinders = capacity;
2062         sector_div(cylinders, dummy);
2063
2064         /*
2065          * Handle extended translation size for logical drives
2066          * > 1Gb
2067          */
2068         if ((ulong)capacity >= 0x200000) {
2069                 heads = 255;
2070                 sectors = 63;
2071                 dummy = heads * sectors;
2072                 cylinders = capacity;
2073                 sector_div(cylinders, dummy);
2074         }
2075
2076         /* return result */
2077         params[0] = heads;
2078         params[1] = sectors;
2079         params[2] = cylinders;
2080
2081         return 0;
2082 }
2083
2084 /**
2085  * _scsih_response_code - translation of device response code
2086  * @ioc: per adapter object
2087  * @response_code: response code returned by the device
2088  *
2089  * Return nothing.
2090  */
2091 static void
2092 _scsih_response_code(struct MPT3SAS_ADAPTER *ioc, u8 response_code)
2093 {
2094         char *desc;
2095
2096         switch (response_code) {
2097         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
2098                 desc = "task management request completed";
2099                 break;
2100         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
2101                 desc = "invalid frame";
2102                 break;
2103         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2104                 desc = "task management request not supported";
2105                 break;
2106         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
2107                 desc = "task management request failed";
2108                 break;
2109         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2110                 desc = "task management request succeeded";
2111                 break;
2112         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2113                 desc = "invalid lun";
2114                 break;
2115         case 0xA:
2116                 desc = "overlapped tag attempted";
2117                 break;
2118         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2119                 desc = "task queued, however not sent to target";
2120                 break;
2121         default:
2122                 desc = "unknown";
2123                 break;
2124         }
2125         pr_warn(MPT3SAS_FMT "response_code(0x%01x): %s\n",
2126                 ioc->name, response_code, desc);
2127 }
2128
2129 /**
2130  * _scsih_tm_done - tm completion routine
2131  * @ioc: per adapter object
2132  * @smid: system request message index
2133  * @msix_index: MSIX table index supplied by the OS
2134  * @reply: reply message frame(lower 32bit addr)
2135  * Context: none.
2136  *
2137  * The callback handler when using scsih_issue_tm.
2138  *
2139  * Return 1 meaning mf should be freed from _base_interrupt
2140  *        0 means the mf is freed from this function.
2141  */
2142 static u8
2143 _scsih_tm_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
2144 {
2145         MPI2DefaultReply_t *mpi_reply;
2146
2147         if (ioc->tm_cmds.status == MPT3_CMD_NOT_USED)
2148                 return 1;
2149         if (ioc->tm_cmds.smid != smid)
2150                 return 1;
2151         ioc->tm_cmds.status |= MPT3_CMD_COMPLETE;
2152         mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
2153         if (mpi_reply) {
2154                 memcpy(ioc->tm_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
2155                 ioc->tm_cmds.status |= MPT3_CMD_REPLY_VALID;
2156         }
2157         ioc->tm_cmds.status &= ~MPT3_CMD_PENDING;
2158         complete(&ioc->tm_cmds.done);
2159         return 1;
2160 }
2161
2162 /**
2163  * mpt3sas_scsih_set_tm_flag - set per target tm_busy
2164  * @ioc: per adapter object
2165  * @handle: device handle
2166  *
2167  * During taskmangement request, we need to freeze the device queue.
2168  */
2169 void
2170 mpt3sas_scsih_set_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2171 {
2172         struct MPT3SAS_DEVICE *sas_device_priv_data;
2173         struct scsi_device *sdev;
2174         u8 skip = 0;
2175
2176         shost_for_each_device(sdev, ioc->shost) {
2177                 if (skip)
2178                         continue;
2179                 sas_device_priv_data = sdev->hostdata;
2180                 if (!sas_device_priv_data)
2181                         continue;
2182                 if (sas_device_priv_data->sas_target->handle == handle) {
2183                         sas_device_priv_data->sas_target->tm_busy = 1;
2184                         skip = 1;
2185                         ioc->ignore_loginfos = 1;
2186                 }
2187         }
2188 }
2189
2190 /**
2191  * mpt3sas_scsih_clear_tm_flag - clear per target tm_busy
2192  * @ioc: per adapter object
2193  * @handle: device handle
2194  *
2195  * During taskmangement request, we need to freeze the device queue.
2196  */
2197 void
2198 mpt3sas_scsih_clear_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2199 {
2200         struct MPT3SAS_DEVICE *sas_device_priv_data;
2201         struct scsi_device *sdev;
2202         u8 skip = 0;
2203
2204         shost_for_each_device(sdev, ioc->shost) {
2205                 if (skip)
2206                         continue;
2207                 sas_device_priv_data = sdev->hostdata;
2208                 if (!sas_device_priv_data)
2209                         continue;
2210                 if (sas_device_priv_data->sas_target->handle == handle) {
2211                         sas_device_priv_data->sas_target->tm_busy = 0;
2212                         skip = 1;
2213                         ioc->ignore_loginfos = 0;
2214                 }
2215         }
2216 }
2217
2218 /**
2219  * mpt3sas_scsih_issue_tm - main routine for sending tm requests
2220  * @ioc: per adapter struct
2221  * @device_handle: device handle
2222  * @channel: the channel assigned by the OS
2223  * @id: the id assigned by the OS
2224  * @lun: lun number
2225  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in mpi2_init.h)
2226  * @smid_task: smid assigned to the task
2227  * @timeout: timeout in seconds
2228  * Context: user
2229  *
2230  * A generic API for sending task management requests to firmware.
2231  *
2232  * The callback index is set inside `ioc->tm_cb_idx`.
2233  *
2234  * Return SUCCESS or FAILED.
2235  */
2236 int
2237 mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel,
2238         uint id, uint lun, u8 type, u16 smid_task, ulong timeout)
2239 {
2240         Mpi2SCSITaskManagementRequest_t *mpi_request;
2241         Mpi2SCSITaskManagementReply_t *mpi_reply;
2242         u16 smid = 0;
2243         u32 ioc_state;
2244         struct scsiio_tracker *scsi_lookup = NULL;
2245         int rc;
2246         u16 msix_task = 0;
2247
2248         lockdep_assert_held(&ioc->tm_cmds.mutex);
2249
2250         if (ioc->tm_cmds.status != MPT3_CMD_NOT_USED) {
2251                 pr_info(MPT3SAS_FMT "%s: tm_cmd busy!!!\n",
2252                     __func__, ioc->name);
2253                 return FAILED;
2254         }
2255
2256         if (ioc->shost_recovery || ioc->remove_host ||
2257             ioc->pci_error_recovery) {
2258                 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
2259                     __func__, ioc->name);
2260                 return FAILED;
2261         }
2262
2263         ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
2264         if (ioc_state & MPI2_DOORBELL_USED) {
2265                 dhsprintk(ioc, pr_info(MPT3SAS_FMT
2266                         "unexpected doorbell active!\n", ioc->name));
2267                 rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2268                 return (!rc) ? SUCCESS : FAILED;
2269         }
2270
2271         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
2272                 mpt3sas_base_fault_info(ioc, ioc_state &
2273                     MPI2_DOORBELL_DATA_MASK);
2274                 rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2275                 return (!rc) ? SUCCESS : FAILED;
2276         }
2277
2278         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_cb_idx);
2279         if (!smid) {
2280                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
2281                     ioc->name, __func__);
2282                 return FAILED;
2283         }
2284
2285         if (type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
2286                 scsi_lookup = &ioc->scsi_lookup[smid_task - 1];
2287
2288         dtmprintk(ioc, pr_info(MPT3SAS_FMT
2289                 "sending tm: handle(0x%04x), task_type(0x%02x), smid(%d)\n",
2290                 ioc->name, handle, type, smid_task));
2291         ioc->tm_cmds.status = MPT3_CMD_PENDING;
2292         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2293         ioc->tm_cmds.smid = smid;
2294         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
2295         memset(ioc->tm_cmds.reply, 0, sizeof(Mpi2SCSITaskManagementReply_t));
2296         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
2297         mpi_request->DevHandle = cpu_to_le16(handle);
2298         mpi_request->TaskType = type;
2299         mpi_request->TaskMID = cpu_to_le16(smid_task);
2300         int_to_scsilun(lun, (struct scsi_lun *)mpi_request->LUN);
2301         mpt3sas_scsih_set_tm_flag(ioc, handle);
2302         init_completion(&ioc->tm_cmds.done);
2303         if ((type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) &&
2304                         (scsi_lookup->msix_io < ioc->reply_queue_count))
2305                 msix_task = scsi_lookup->msix_io;
2306         else
2307                 msix_task = 0;
2308         ioc->put_smid_hi_priority(ioc, smid, msix_task);
2309         wait_for_completion_timeout(&ioc->tm_cmds.done, timeout*HZ);
2310         if (!(ioc->tm_cmds.status & MPT3_CMD_COMPLETE)) {
2311                 pr_err(MPT3SAS_FMT "%s: timeout\n",
2312                     ioc->name, __func__);
2313                 _debug_dump_mf(mpi_request,
2314                     sizeof(Mpi2SCSITaskManagementRequest_t)/4);
2315                 if (!(ioc->tm_cmds.status & MPT3_CMD_RESET)) {
2316                         rc = mpt3sas_base_hard_reset_handler(ioc,
2317                                         FORCE_BIG_HAMMER);
2318                         rc = (!rc) ? SUCCESS : FAILED;
2319                         goto out;
2320                 }
2321         }
2322
2323         /* sync IRQs in case those were busy during flush. */
2324         mpt3sas_base_sync_reply_irqs(ioc);
2325
2326         if (ioc->tm_cmds.status & MPT3_CMD_REPLY_VALID) {
2327                 mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
2328                 mpi_reply = ioc->tm_cmds.reply;
2329                 dtmprintk(ioc, pr_info(MPT3SAS_FMT "complete tm: " \
2330                     "ioc_status(0x%04x), loginfo(0x%08x), term_count(0x%08x)\n",
2331                     ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
2332                     le32_to_cpu(mpi_reply->IOCLogInfo),
2333                     le32_to_cpu(mpi_reply->TerminationCount)));
2334                 if (ioc->logging_level & MPT_DEBUG_TM) {
2335                         _scsih_response_code(ioc, mpi_reply->ResponseCode);
2336                         if (mpi_reply->IOCStatus)
2337                                 _debug_dump_mf(mpi_request,
2338                                     sizeof(Mpi2SCSITaskManagementRequest_t)/4);
2339                 }
2340         }
2341
2342         switch (type) {
2343         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
2344                 rc = SUCCESS;
2345                 if (scsi_lookup->scmd == NULL)
2346                         break;
2347                 rc = FAILED;
2348                 break;
2349
2350         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
2351                 if (_scsih_scsi_lookup_find_by_target(ioc, id, channel))
2352                         rc = FAILED;
2353                 else
2354                         rc = SUCCESS;
2355                 break;
2356         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
2357         case MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
2358                 if (_scsih_scsi_lookup_find_by_lun(ioc, id, lun, channel))
2359                         rc = FAILED;
2360                 else
2361                         rc = SUCCESS;
2362                 break;
2363         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
2364                 rc = SUCCESS;
2365                 break;
2366         default:
2367                 rc = FAILED;
2368                 break;
2369         }
2370
2371 out:
2372         mpt3sas_scsih_clear_tm_flag(ioc, handle);
2373         ioc->tm_cmds.status = MPT3_CMD_NOT_USED;
2374         return rc;
2375 }
2376
2377 int mpt3sas_scsih_issue_locked_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle,
2378         uint channel, uint id, uint lun, u8 type, u16 smid_task, ulong timeout)
2379 {
2380         int ret;
2381
2382         mutex_lock(&ioc->tm_cmds.mutex);
2383         ret = mpt3sas_scsih_issue_tm(ioc, handle, channel, id, lun, type,
2384                         smid_task, timeout);
2385         mutex_unlock(&ioc->tm_cmds.mutex);
2386
2387         return ret;
2388 }
2389
2390 /**
2391  * _scsih_tm_display_info - displays info about the device
2392  * @ioc: per adapter struct
2393  * @scmd: pointer to scsi command object
2394  *
2395  * Called by task management callback handlers.
2396  */
2397 static void
2398 _scsih_tm_display_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd)
2399 {
2400         struct scsi_target *starget = scmd->device->sdev_target;
2401         struct MPT3SAS_TARGET *priv_target = starget->hostdata;
2402         struct _sas_device *sas_device = NULL;
2403         unsigned long flags;
2404         char *device_str = NULL;
2405
2406         if (!priv_target)
2407                 return;
2408         if (ioc->hide_ir_msg)
2409                 device_str = "WarpDrive";
2410         else
2411                 device_str = "volume";
2412
2413         scsi_print_command(scmd);
2414         if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2415                 starget_printk(KERN_INFO, starget,
2416                         "%s handle(0x%04x), %s wwid(0x%016llx)\n",
2417                         device_str, priv_target->handle,
2418                     device_str, (unsigned long long)priv_target->sas_address);
2419         } else {
2420                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
2421                 sas_device = __mpt3sas_get_sdev_from_target(ioc, priv_target);
2422                 if (sas_device) {
2423                         if (priv_target->flags &
2424                             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2425                                 starget_printk(KERN_INFO, starget,
2426                                     "volume handle(0x%04x), "
2427                                     "volume wwid(0x%016llx)\n",
2428                                     sas_device->volume_handle,
2429                                    (unsigned long long)sas_device->volume_wwid);
2430                         }
2431                         starget_printk(KERN_INFO, starget,
2432                             "handle(0x%04x), sas_address(0x%016llx), phy(%d)\n",
2433                             sas_device->handle,
2434                             (unsigned long long)sas_device->sas_address,
2435                             sas_device->phy);
2436                         if (sas_device->enclosure_handle != 0)
2437                                 starget_printk(KERN_INFO, starget,
2438                                  "enclosure_logical_id(0x%016llx), slot(%d)\n",
2439                                  (unsigned long long)
2440                                  sas_device->enclosure_logical_id,
2441                                  sas_device->slot);
2442                         if (sas_device->connector_name[0] != '\0')
2443                                 starget_printk(KERN_INFO, starget,
2444                                 "enclosure level(0x%04x),connector name(%s)\n",
2445                                  sas_device->enclosure_level,
2446                                  sas_device->connector_name);
2447
2448                         sas_device_put(sas_device);
2449                 }
2450                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
2451         }
2452 }
2453
2454 /**
2455  * scsih_abort - eh threads main abort routine
2456  * @scmd: pointer to scsi command object
2457  *
2458  * Returns SUCCESS if command aborted else FAILED
2459  */
2460 static int
2461 scsih_abort(struct scsi_cmnd *scmd)
2462 {
2463         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2464         struct MPT3SAS_DEVICE *sas_device_priv_data;
2465         u16 smid;
2466         u16 handle;
2467         int r;
2468
2469         sdev_printk(KERN_INFO, scmd->device,
2470                 "attempting task abort! scmd(%p)\n", scmd);
2471         _scsih_tm_display_info(ioc, scmd);
2472
2473         sas_device_priv_data = scmd->device->hostdata;
2474         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2475                 sdev_printk(KERN_INFO, scmd->device,
2476                         "device been deleted! scmd(%p)\n", scmd);
2477                 scmd->result = DID_NO_CONNECT << 16;
2478                 scmd->scsi_done(scmd);
2479                 r = SUCCESS;
2480                 goto out;
2481         }
2482
2483         /* search for the command */
2484         smid = _scsih_scsi_lookup_find_by_scmd(ioc, scmd);
2485         if (!smid) {
2486                 scmd->result = DID_RESET << 16;
2487                 r = SUCCESS;
2488                 goto out;
2489         }
2490
2491         /* for hidden raid components and volumes this is not supported */
2492         if (sas_device_priv_data->sas_target->flags &
2493             MPT_TARGET_FLAGS_RAID_COMPONENT ||
2494             sas_device_priv_data->sas_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2495                 scmd->result = DID_RESET << 16;
2496                 r = FAILED;
2497                 goto out;
2498         }
2499
2500         mpt3sas_halt_firmware(ioc);
2501
2502         handle = sas_device_priv_data->sas_target->handle;
2503         r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2504             scmd->device->id, scmd->device->lun,
2505             MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid, 30);
2506
2507  out:
2508         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
2509             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2510         return r;
2511 }
2512
2513 /**
2514  * scsih_dev_reset - eh threads main device reset routine
2515  * @scmd: pointer to scsi command object
2516  *
2517  * Returns SUCCESS if command aborted else FAILED
2518  */
2519 static int
2520 scsih_dev_reset(struct scsi_cmnd *scmd)
2521 {
2522         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2523         struct MPT3SAS_DEVICE *sas_device_priv_data;
2524         struct _sas_device *sas_device = NULL;
2525         u16     handle;
2526         int r;
2527
2528         struct scsi_target *starget = scmd->device->sdev_target;
2529         struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2530
2531         sdev_printk(KERN_INFO, scmd->device,
2532                 "attempting device reset! scmd(%p)\n", scmd);
2533         _scsih_tm_display_info(ioc, scmd);
2534
2535         sas_device_priv_data = scmd->device->hostdata;
2536         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2537                 sdev_printk(KERN_INFO, scmd->device,
2538                         "device been deleted! scmd(%p)\n", scmd);
2539                 scmd->result = DID_NO_CONNECT << 16;
2540                 scmd->scsi_done(scmd);
2541                 r = SUCCESS;
2542                 goto out;
2543         }
2544
2545         /* for hidden raid components obtain the volume_handle */
2546         handle = 0;
2547         if (sas_device_priv_data->sas_target->flags &
2548             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2549                 sas_device = mpt3sas_get_sdev_from_target(ioc,
2550                                 target_priv_data);
2551                 if (sas_device)
2552                         handle = sas_device->volume_handle;
2553         } else
2554                 handle = sas_device_priv_data->sas_target->handle;
2555
2556         if (!handle) {
2557                 scmd->result = DID_RESET << 16;
2558                 r = FAILED;
2559                 goto out;
2560         }
2561
2562         r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2563             scmd->device->id, scmd->device->lun,
2564             MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 30);
2565
2566  out:
2567         sdev_printk(KERN_INFO, scmd->device, "device reset: %s scmd(%p)\n",
2568             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2569
2570         if (sas_device)
2571                 sas_device_put(sas_device);
2572
2573         return r;
2574 }
2575
2576 /**
2577  * scsih_target_reset - eh threads main target reset routine
2578  * @scmd: pointer to scsi command object
2579  *
2580  * Returns SUCCESS if command aborted else FAILED
2581  */
2582 static int
2583 scsih_target_reset(struct scsi_cmnd *scmd)
2584 {
2585         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2586         struct MPT3SAS_DEVICE *sas_device_priv_data;
2587         struct _sas_device *sas_device = NULL;
2588         u16     handle;
2589         int r;
2590         struct scsi_target *starget = scmd->device->sdev_target;
2591         struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2592
2593         starget_printk(KERN_INFO, starget, "attempting target reset! scmd(%p)\n",
2594                 scmd);
2595         _scsih_tm_display_info(ioc, scmd);
2596
2597         sas_device_priv_data = scmd->device->hostdata;
2598         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2599                 starget_printk(KERN_INFO, starget, "target been deleted! scmd(%p)\n",
2600                         scmd);
2601                 scmd->result = DID_NO_CONNECT << 16;
2602                 scmd->scsi_done(scmd);
2603                 r = SUCCESS;
2604                 goto out;
2605         }
2606
2607         /* for hidden raid components obtain the volume_handle */
2608         handle = 0;
2609         if (sas_device_priv_data->sas_target->flags &
2610             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2611                 sas_device = mpt3sas_get_sdev_from_target(ioc,
2612                                 target_priv_data);
2613                 if (sas_device)
2614                         handle = sas_device->volume_handle;
2615         } else
2616                 handle = sas_device_priv_data->sas_target->handle;
2617
2618         if (!handle) {
2619                 scmd->result = DID_RESET << 16;
2620                 r = FAILED;
2621                 goto out;
2622         }
2623
2624         r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2625             scmd->device->id, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
2626             30);
2627
2628  out:
2629         starget_printk(KERN_INFO, starget, "target reset: %s scmd(%p)\n",
2630             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2631
2632         if (sas_device)
2633                 sas_device_put(sas_device);
2634
2635         return r;
2636 }
2637
2638
2639 /**
2640  * scsih_host_reset - eh threads main host reset routine
2641  * @scmd: pointer to scsi command object
2642  *
2643  * Returns SUCCESS if command aborted else FAILED
2644  */
2645 static int
2646 scsih_host_reset(struct scsi_cmnd *scmd)
2647 {
2648         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2649         int r, retval;
2650
2651         pr_info(MPT3SAS_FMT "attempting host reset! scmd(%p)\n",
2652             ioc->name, scmd);
2653         scsi_print_command(scmd);
2654
2655         if (ioc->is_driver_loading) {
2656                 pr_info(MPT3SAS_FMT "Blocking the host reset\n",
2657                     ioc->name);
2658                 r = FAILED;
2659                 goto out;
2660         }
2661
2662         retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2663         r = (retval < 0) ? FAILED : SUCCESS;
2664 out:
2665         pr_info(MPT3SAS_FMT "host reset: %s scmd(%p)\n",
2666             ioc->name, ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2667
2668         return r;
2669 }
2670
2671 /**
2672  * _scsih_fw_event_add - insert and queue up fw_event
2673  * @ioc: per adapter object
2674  * @fw_event: object describing the event
2675  * Context: This function will acquire ioc->fw_event_lock.
2676  *
2677  * This adds the firmware event object into link list, then queues it up to
2678  * be processed from user context.
2679  *
2680  * Return nothing.
2681  */
2682 static void
2683 _scsih_fw_event_add(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
2684 {
2685         unsigned long flags;
2686
2687         if (ioc->firmware_event_thread == NULL)
2688                 return;
2689
2690         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2691         fw_event_work_get(fw_event);
2692         INIT_LIST_HEAD(&fw_event->list);
2693         list_add_tail(&fw_event->list, &ioc->fw_event_list);
2694         INIT_WORK(&fw_event->work, _firmware_event_work);
2695         fw_event_work_get(fw_event);
2696         queue_work(ioc->firmware_event_thread, &fw_event->work);
2697         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2698 }
2699
2700 /**
2701  * _scsih_fw_event_del_from_list - delete fw_event from the list
2702  * @ioc: per adapter object
2703  * @fw_event: object describing the event
2704  * Context: This function will acquire ioc->fw_event_lock.
2705  *
2706  * If the fw_event is on the fw_event_list, remove it and do a put.
2707  *
2708  * Return nothing.
2709  */
2710 static void
2711 _scsih_fw_event_del_from_list(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work
2712         *fw_event)
2713 {
2714         unsigned long flags;
2715
2716         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2717         if (!list_empty(&fw_event->list)) {
2718                 list_del_init(&fw_event->list);
2719                 fw_event_work_put(fw_event);
2720         }
2721         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2722 }
2723
2724
2725  /**
2726  * mpt3sas_send_trigger_data_event - send event for processing trigger data
2727  * @ioc: per adapter object
2728  * @event_data: trigger event data
2729  *
2730  * Return nothing.
2731  */
2732 void
2733 mpt3sas_send_trigger_data_event(struct MPT3SAS_ADAPTER *ioc,
2734         struct SL_WH_TRIGGERS_EVENT_DATA_T *event_data)
2735 {
2736         struct fw_event_work *fw_event;
2737         u16 sz;
2738
2739         if (ioc->is_driver_loading)
2740                 return;
2741         sz = sizeof(*event_data);
2742         fw_event = alloc_fw_event_work(sz);
2743         if (!fw_event)
2744                 return;
2745         fw_event->event = MPT3SAS_PROCESS_TRIGGER_DIAG;
2746         fw_event->ioc = ioc;
2747         memcpy(fw_event->event_data, event_data, sizeof(*event_data));
2748         _scsih_fw_event_add(ioc, fw_event);
2749         fw_event_work_put(fw_event);
2750 }
2751
2752 /**
2753  * _scsih_error_recovery_delete_devices - remove devices not responding
2754  * @ioc: per adapter object
2755  *
2756  * Return nothing.
2757  */
2758 static void
2759 _scsih_error_recovery_delete_devices(struct MPT3SAS_ADAPTER *ioc)
2760 {
2761         struct fw_event_work *fw_event;
2762
2763         if (ioc->is_driver_loading)
2764                 return;
2765         fw_event = alloc_fw_event_work(0);
2766         if (!fw_event)
2767                 return;
2768         fw_event->event = MPT3SAS_REMOVE_UNRESPONDING_DEVICES;
2769         fw_event->ioc = ioc;
2770         _scsih_fw_event_add(ioc, fw_event);
2771         fw_event_work_put(fw_event);
2772 }
2773
2774 /**
2775  * mpt3sas_port_enable_complete - port enable completed (fake event)
2776  * @ioc: per adapter object
2777  *
2778  * Return nothing.
2779  */
2780 void
2781 mpt3sas_port_enable_complete(struct MPT3SAS_ADAPTER *ioc)
2782 {
2783         struct fw_event_work *fw_event;
2784
2785         fw_event = alloc_fw_event_work(0);
2786         if (!fw_event)
2787                 return;
2788         fw_event->event = MPT3SAS_PORT_ENABLE_COMPLETE;
2789         fw_event->ioc = ioc;
2790         _scsih_fw_event_add(ioc, fw_event);
2791         fw_event_work_put(fw_event);
2792 }
2793
2794 static struct fw_event_work *dequeue_next_fw_event(struct MPT3SAS_ADAPTER *ioc)
2795 {
2796         unsigned long flags;
2797         struct fw_event_work *fw_event = NULL;
2798
2799         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2800         if (!list_empty(&ioc->fw_event_list)) {
2801                 fw_event = list_first_entry(&ioc->fw_event_list,
2802                                 struct fw_event_work, list);
2803                 list_del_init(&fw_event->list);
2804         }
2805         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2806
2807         return fw_event;
2808 }
2809
2810 /**
2811  * _scsih_fw_event_cleanup_queue - cleanup event queue
2812  * @ioc: per adapter object
2813  *
2814  * Walk the firmware event queue, either killing timers, or waiting
2815  * for outstanding events to complete
2816  *
2817  * Return nothing.
2818  */
2819 static void
2820 _scsih_fw_event_cleanup_queue(struct MPT3SAS_ADAPTER *ioc)
2821 {
2822         struct fw_event_work *fw_event;
2823
2824         if (list_empty(&ioc->fw_event_list) ||
2825              !ioc->firmware_event_thread || in_interrupt())
2826                 return;
2827
2828         while ((fw_event = dequeue_next_fw_event(ioc))) {
2829                 /*
2830                  * Wait on the fw_event to complete. If this returns 1, then
2831                  * the event was never executed, and we need a put for the
2832                  * reference the work had on the fw_event.
2833                  *
2834                  * If it did execute, we wait for it to finish, and the put will
2835                  * happen from _firmware_event_work()
2836                  */
2837                 if (cancel_work_sync(&fw_event->work))
2838                         fw_event_work_put(fw_event);
2839
2840                 fw_event_work_put(fw_event);
2841         }
2842 }
2843
2844 /**
2845  * _scsih_internal_device_block - block the sdev device
2846  * @sdev: per device object
2847  * @sas_device_priv_data : per device driver private data
2848  *
2849  * make sure device is blocked without error, if not
2850  * print an error
2851  */
2852 static void
2853 _scsih_internal_device_block(struct scsi_device *sdev,
2854                         struct MPT3SAS_DEVICE *sas_device_priv_data)
2855 {
2856         int r = 0;
2857
2858         sdev_printk(KERN_INFO, sdev, "device_block, handle(0x%04x)\n",
2859             sas_device_priv_data->sas_target->handle);
2860         sas_device_priv_data->block = 1;
2861
2862         r = scsi_internal_device_block_nowait(sdev);
2863         if (r == -EINVAL)
2864                 sdev_printk(KERN_WARNING, sdev,
2865                     "device_block failed with return(%d) for handle(0x%04x)\n",
2866                     r, sas_device_priv_data->sas_target->handle);
2867 }
2868
2869 /**
2870  * _scsih_internal_device_unblock - unblock the sdev device
2871  * @sdev: per device object
2872  * @sas_device_priv_data : per device driver private data
2873  * make sure device is unblocked without error, if not retry
2874  * by blocking and then unblocking
2875  */
2876
2877 static void
2878 _scsih_internal_device_unblock(struct scsi_device *sdev,
2879                         struct MPT3SAS_DEVICE *sas_device_priv_data)
2880 {
2881         int r = 0;
2882
2883         sdev_printk(KERN_WARNING, sdev, "device_unblock and setting to running, "
2884             "handle(0x%04x)\n", sas_device_priv_data->sas_target->handle);
2885         sas_device_priv_data->block = 0;
2886         r = scsi_internal_device_unblock_nowait(sdev, SDEV_RUNNING);
2887         if (r == -EINVAL) {
2888                 /* The device has been set to SDEV_RUNNING by SD layer during
2889                  * device addition but the request queue is still stopped by
2890                  * our earlier block call. We need to perform a block again
2891                  * to get the device to SDEV_BLOCK and then to SDEV_RUNNING */
2892
2893                 sdev_printk(KERN_WARNING, sdev,
2894                     "device_unblock failed with return(%d) for handle(0x%04x) "
2895                     "performing a block followed by an unblock\n",
2896                     r, sas_device_priv_data->sas_target->handle);
2897                 sas_device_priv_data->block = 1;
2898                 r = scsi_internal_device_block_nowait(sdev);
2899                 if (r)
2900                         sdev_printk(KERN_WARNING, sdev, "retried device_block "
2901                             "failed with return(%d) for handle(0x%04x)\n",
2902                             r, sas_device_priv_data->sas_target->handle);
2903
2904                 sas_device_priv_data->block = 0;
2905                 r = scsi_internal_device_unblock_nowait(sdev, SDEV_RUNNING);
2906                 if (r)
2907                         sdev_printk(KERN_WARNING, sdev, "retried device_unblock"
2908                             " failed with return(%d) for handle(0x%04x)\n",
2909                             r, sas_device_priv_data->sas_target->handle);
2910         }
2911 }
2912
2913 /**
2914  * _scsih_ublock_io_all_device - unblock every device
2915  * @ioc: per adapter object
2916  *
2917  * change the device state from block to running
2918  */
2919 static void
2920 _scsih_ublock_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2921 {
2922         struct MPT3SAS_DEVICE *sas_device_priv_data;
2923         struct scsi_device *sdev;
2924
2925         shost_for_each_device(sdev, ioc->shost) {
2926                 sas_device_priv_data = sdev->hostdata;
2927                 if (!sas_device_priv_data)
2928                         continue;
2929                 if (!sas_device_priv_data->block)
2930                         continue;
2931
2932                 dewtprintk(ioc, sdev_printk(KERN_INFO, sdev,
2933                         "device_running, handle(0x%04x)\n",
2934                     sas_device_priv_data->sas_target->handle));
2935                 _scsih_internal_device_unblock(sdev, sas_device_priv_data);
2936         }
2937 }
2938
2939
2940 /**
2941  * _scsih_ublock_io_device - prepare device to be deleted
2942  * @ioc: per adapter object
2943  * @sas_addr: sas address
2944  *
2945  * unblock then put device in offline state
2946  */
2947 static void
2948 _scsih_ublock_io_device(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
2949 {
2950         struct MPT3SAS_DEVICE *sas_device_priv_data;
2951         struct scsi_device *sdev;
2952
2953         shost_for_each_device(sdev, ioc->shost) {
2954                 sas_device_priv_data = sdev->hostdata;
2955                 if (!sas_device_priv_data)
2956                         continue;
2957                 if (sas_device_priv_data->sas_target->sas_address
2958                     != sas_address)
2959                         continue;
2960                 if (sas_device_priv_data->block)
2961                         _scsih_internal_device_unblock(sdev,
2962                                 sas_device_priv_data);
2963         }
2964 }
2965
2966 /**
2967  * _scsih_block_io_all_device - set the device state to SDEV_BLOCK
2968  * @ioc: per adapter object
2969  * @handle: device handle
2970  *
2971  * During device pull we need to appropriately set the sdev state.
2972  */
2973 static void
2974 _scsih_block_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2975 {
2976         struct MPT3SAS_DEVICE *sas_device_priv_data;
2977         struct scsi_device *sdev;
2978
2979         shost_for_each_device(sdev, ioc->shost) {
2980                 sas_device_priv_data = sdev->hostdata;
2981                 if (!sas_device_priv_data)
2982                         continue;
2983                 if (sas_device_priv_data->block)
2984                         continue;
2985                 if (sas_device_priv_data->ignore_delay_remove) {
2986                         sdev_printk(KERN_INFO, sdev,
2987                         "%s skip device_block for SES handle(0x%04x)\n",
2988                         __func__, sas_device_priv_data->sas_target->handle);
2989                         continue;
2990                 }
2991                 _scsih_internal_device_block(sdev, sas_device_priv_data);
2992         }
2993 }
2994
2995 /**
2996  * _scsih_block_io_device - set the device state to SDEV_BLOCK
2997  * @ioc: per adapter object
2998  * @handle: device handle
2999  *
3000  * During device pull we need to appropriately set the sdev state.
3001  */
3002 static void
3003 _scsih_block_io_device(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3004 {
3005         struct MPT3SAS_DEVICE *sas_device_priv_data;
3006         struct scsi_device *sdev;
3007         struct _sas_device *sas_device;
3008
3009         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
3010         if (!sas_device)
3011                 return;
3012
3013         shost_for_each_device(sdev, ioc->shost) {
3014                 sas_device_priv_data = sdev->hostdata;
3015                 if (!sas_device_priv_data)
3016                         continue;
3017                 if (sas_device_priv_data->sas_target->handle != handle)
3018                         continue;
3019                 if (sas_device_priv_data->block)
3020                         continue;
3021                 if (sas_device->pend_sas_rphy_add)
3022                         continue;
3023                 if (sas_device_priv_data->ignore_delay_remove) {
3024                         sdev_printk(KERN_INFO, sdev,
3025                         "%s skip device_block for SES handle(0x%04x)\n",
3026                         __func__, sas_device_priv_data->sas_target->handle);
3027                         continue;
3028                 }
3029                 _scsih_internal_device_block(sdev, sas_device_priv_data);
3030         }
3031
3032         sas_device_put(sas_device);
3033 }
3034
3035 /**
3036  * _scsih_block_io_to_children_attached_to_ex
3037  * @ioc: per adapter object
3038  * @sas_expander: the sas_device object
3039  *
3040  * This routine set sdev state to SDEV_BLOCK for all devices
3041  * attached to this expander. This function called when expander is
3042  * pulled.
3043  */
3044 static void
3045 _scsih_block_io_to_children_attached_to_ex(struct MPT3SAS_ADAPTER *ioc,
3046         struct _sas_node *sas_expander)
3047 {
3048         struct _sas_port *mpt3sas_port;
3049         struct _sas_device *sas_device;
3050         struct _sas_node *expander_sibling;
3051         unsigned long flags;
3052
3053         if (!sas_expander)
3054                 return;
3055
3056         list_for_each_entry(mpt3sas_port,
3057            &sas_expander->sas_port_list, port_list) {
3058                 if (mpt3sas_port->remote_identify.device_type ==
3059                     SAS_END_DEVICE) {
3060                         spin_lock_irqsave(&ioc->sas_device_lock, flags);
3061                         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
3062                             mpt3sas_port->remote_identify.sas_address);
3063                         if (sas_device) {
3064                                 set_bit(sas_device->handle,
3065                                                 ioc->blocking_handles);
3066                                 sas_device_put(sas_device);
3067                         }
3068                         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3069                 }
3070         }
3071
3072         list_for_each_entry(mpt3sas_port,
3073            &sas_expander->sas_port_list, port_list) {
3074
3075                 if (mpt3sas_port->remote_identify.device_type ==
3076                     SAS_EDGE_EXPANDER_DEVICE ||
3077                     mpt3sas_port->remote_identify.device_type ==
3078                     SAS_FANOUT_EXPANDER_DEVICE) {
3079                         expander_sibling =
3080                             mpt3sas_scsih_expander_find_by_sas_address(
3081                             ioc, mpt3sas_port->remote_identify.sas_address);
3082                         _scsih_block_io_to_children_attached_to_ex(ioc,
3083                             expander_sibling);
3084                 }
3085         }
3086 }
3087
3088 /**
3089  * _scsih_block_io_to_children_attached_directly
3090  * @ioc: per adapter object
3091  * @event_data: topology change event data
3092  *
3093  * This routine set sdev state to SDEV_BLOCK for all devices
3094  * direct attached during device pull.
3095  */
3096 static void
3097 _scsih_block_io_to_children_attached_directly(struct MPT3SAS_ADAPTER *ioc,
3098         Mpi2EventDataSasTopologyChangeList_t *event_data)
3099 {
3100         int i;
3101         u16 handle;
3102         u16 reason_code;
3103
3104         for (i = 0; i < event_data->NumEntries; i++) {
3105                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3106                 if (!handle)
3107                         continue;
3108                 reason_code = event_data->PHY[i].PhyStatus &
3109                     MPI2_EVENT_SAS_TOPO_RC_MASK;
3110                 if (reason_code == MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING)
3111                         _scsih_block_io_device(ioc, handle);
3112         }
3113 }
3114
3115 /**
3116  * _scsih_tm_tr_send - send task management request
3117  * @ioc: per adapter object
3118  * @handle: device handle
3119  * Context: interrupt time.
3120  *
3121  * This code is to initiate the device removal handshake protocol
3122  * with controller firmware.  This function will issue target reset
3123  * using high priority request queue.  It will send a sas iounit
3124  * control request (MPI2_SAS_OP_REMOVE_DEVICE) from this completion.
3125  *
3126  * This is designed to send muliple task management request at the same
3127  * time to the fifo. If the fifo is full, we will append the request,
3128  * and process it in a future completion.
3129  */
3130 static void
3131 _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3132 {
3133         Mpi2SCSITaskManagementRequest_t *mpi_request;
3134         u16 smid;
3135         struct _sas_device *sas_device = NULL;
3136         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
3137         u64 sas_address = 0;
3138         unsigned long flags;
3139         struct _tr_list *delayed_tr;
3140         u32 ioc_state;
3141
3142         if (ioc->remove_host) {
3143                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3144                         "%s: host has been removed: handle(0x%04x)\n",
3145                         __func__, ioc->name, handle));
3146                 return;
3147         } else if (ioc->pci_error_recovery) {
3148                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3149                         "%s: host in pci error recovery: handle(0x%04x)\n",
3150                         __func__, ioc->name,
3151                     handle));
3152                 return;
3153         }
3154         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3155         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3156                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3157                         "%s: host is not operational: handle(0x%04x)\n",
3158                         __func__, ioc->name,
3159                    handle));
3160                 return;
3161         }
3162
3163         /* if PD, then return */
3164         if (test_bit(handle, ioc->pd_handles))
3165                 return;
3166
3167         clear_bit(handle, ioc->pend_os_device_add);
3168
3169         spin_lock_irqsave(&ioc->sas_device_lock, flags);
3170         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
3171         if (sas_device && sas_device->starget &&
3172             sas_device->starget->hostdata) {
3173                 sas_target_priv_data = sas_device->starget->hostdata;
3174                 sas_target_priv_data->deleted = 1;
3175                 sas_address = sas_device->sas_address;
3176         }
3177         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3178
3179         if (sas_target_priv_data) {
3180                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3181                         "setting delete flag: handle(0x%04x), sas_addr(0x%016llx)\n",
3182                         ioc->name, handle,
3183                     (unsigned long long)sas_address));
3184                 if (sas_device->enclosure_handle != 0)
3185                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3186                          "setting delete flag:enclosure logical id(0x%016llx),"
3187                          " slot(%d)\n", ioc->name, (unsigned long long)
3188                           sas_device->enclosure_logical_id,
3189                           sas_device->slot));
3190                 if (sas_device->connector_name[0] != '\0')
3191                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3192                          "setting delete flag: enclosure level(0x%04x),"
3193                          " connector name( %s)\n", ioc->name,
3194                           sas_device->enclosure_level,
3195                           sas_device->connector_name));
3196                 _scsih_ublock_io_device(ioc, sas_address);
3197                 sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
3198         }
3199
3200         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_cb_idx);
3201         if (!smid) {
3202                 delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3203                 if (!delayed_tr)
3204                         goto out;
3205                 INIT_LIST_HEAD(&delayed_tr->list);
3206                 delayed_tr->handle = handle;
3207                 list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3208                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3209                     "DELAYED:tr:handle(0x%04x), (open)\n",
3210                     ioc->name, handle));
3211                 goto out;
3212         }
3213
3214         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3215                 "tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3216                 ioc->name, handle, smid,
3217             ioc->tm_tr_cb_idx));
3218         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3219         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3220         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3221         mpi_request->DevHandle = cpu_to_le16(handle);
3222         mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3223         set_bit(handle, ioc->device_remove_in_progress);
3224         ioc->put_smid_hi_priority(ioc, smid, 0);
3225         mpt3sas_trigger_master(ioc, MASTER_TRIGGER_DEVICE_REMOVAL);
3226
3227 out:
3228         if (sas_device)
3229                 sas_device_put(sas_device);
3230 }
3231
3232 /**
3233  * _scsih_tm_tr_complete -
3234  * @ioc: per adapter object
3235  * @smid: system request message index
3236  * @msix_index: MSIX table index supplied by the OS
3237  * @reply: reply message frame(lower 32bit addr)
3238  * Context: interrupt time.
3239  *
3240  * This is the target reset completion routine.
3241  * This code is part of the code to initiate the device removal
3242  * handshake protocol with controller firmware.
3243  * It will send a sas iounit control request (MPI2_SAS_OP_REMOVE_DEVICE)
3244  *
3245  * Return 1 meaning mf should be freed from _base_interrupt
3246  *        0 means the mf is freed from this function.
3247  */
3248 static u8
3249 _scsih_tm_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3250         u32 reply)
3251 {
3252         u16 handle;
3253         Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3254         Mpi2SCSITaskManagementReply_t *mpi_reply =
3255             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3256         Mpi2SasIoUnitControlRequest_t *mpi_request;
3257         u16 smid_sas_ctrl;
3258         u32 ioc_state;
3259         struct _sc_list *delayed_sc;
3260
3261         if (ioc->remove_host) {
3262                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3263                         "%s: host has been removed\n", __func__, ioc->name));
3264                 return 1;
3265         } else if (ioc->pci_error_recovery) {
3266                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3267                         "%s: host in pci error recovery\n", __func__,
3268                         ioc->name));
3269                 return 1;
3270         }
3271         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3272         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3273                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3274                         "%s: host is not operational\n", __func__, ioc->name));
3275                 return 1;
3276         }
3277         if (unlikely(!mpi_reply)) {
3278                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3279                     ioc->name, __FILE__, __LINE__, __func__);
3280                 return 1;
3281         }
3282         mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3283         handle = le16_to_cpu(mpi_request_tm->DevHandle);
3284         if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3285                 dewtprintk(ioc, pr_err(MPT3SAS_FMT
3286                         "spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3287                         ioc->name, handle,
3288                     le16_to_cpu(mpi_reply->DevHandle), smid));
3289                 return 0;
3290         }
3291
3292         mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
3293         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3294             "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3295             "loginfo(0x%08x), completed(%d)\n", ioc->name,
3296             handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3297             le32_to_cpu(mpi_reply->IOCLogInfo),
3298             le32_to_cpu(mpi_reply->TerminationCount)));
3299
3300         smid_sas_ctrl = mpt3sas_base_get_smid(ioc, ioc->tm_sas_control_cb_idx);
3301         if (!smid_sas_ctrl) {
3302                 delayed_sc = kzalloc(sizeof(*delayed_sc), GFP_ATOMIC);
3303                 if (!delayed_sc)
3304                         return _scsih_check_for_pending_tm(ioc, smid);
3305                 INIT_LIST_HEAD(&delayed_sc->list);
3306                 delayed_sc->handle = mpi_request_tm->DevHandle;
3307                 list_add_tail(&delayed_sc->list, &ioc->delayed_sc_list);
3308                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3309                     "DELAYED:sc:handle(0x%04x), (open)\n",
3310                     ioc->name, handle));
3311                 return _scsih_check_for_pending_tm(ioc, smid);
3312         }
3313
3314         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3315                 "sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3316                 ioc->name, handle, smid_sas_ctrl,
3317             ioc->tm_sas_control_cb_idx));
3318         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid_sas_ctrl);
3319         memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3320         mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3321         mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3322         mpi_request->DevHandle = mpi_request_tm->DevHandle;
3323         ioc->put_smid_default(ioc, smid_sas_ctrl);
3324
3325         return _scsih_check_for_pending_tm(ioc, smid);
3326 }
3327
3328
3329 /**
3330  * _scsih_sas_control_complete - completion routine
3331  * @ioc: per adapter object
3332  * @smid: system request message index
3333  * @msix_index: MSIX table index supplied by the OS
3334  * @reply: reply message frame(lower 32bit addr)
3335  * Context: interrupt time.
3336  *
3337  * This is the sas iounit control completion routine.
3338  * This code is part of the code to initiate the device removal
3339  * handshake protocol with controller firmware.
3340  *
3341  * Return 1 meaning mf should be freed from _base_interrupt
3342  *        0 means the mf is freed from this function.
3343  */
3344 static u8
3345 _scsih_sas_control_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3346         u8 msix_index, u32 reply)
3347 {
3348         Mpi2SasIoUnitControlReply_t *mpi_reply =
3349             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3350
3351         if (likely(mpi_reply)) {
3352                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3353                 "sc_complete:handle(0x%04x), (open) "
3354                 "smid(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
3355                 ioc->name, le16_to_cpu(mpi_reply->DevHandle), smid,
3356                 le16_to_cpu(mpi_reply->IOCStatus),
3357                 le32_to_cpu(mpi_reply->IOCLogInfo)));
3358                 if (le16_to_cpu(mpi_reply->IOCStatus) ==
3359                      MPI2_IOCSTATUS_SUCCESS) {
3360                         clear_bit(le16_to_cpu(mpi_reply->DevHandle),
3361                             ioc->device_remove_in_progress);
3362                 }
3363         } else {
3364                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3365                     ioc->name, __FILE__, __LINE__, __func__);
3366         }
3367         return mpt3sas_check_for_pending_internal_cmds(ioc, smid);
3368 }
3369
3370 /**
3371  * _scsih_tm_tr_volume_send - send target reset request for volumes
3372  * @ioc: per adapter object
3373  * @handle: device handle
3374  * Context: interrupt time.
3375  *
3376  * This is designed to send muliple task management request at the same
3377  * time to the fifo. If the fifo is full, we will append the request,
3378  * and process it in a future completion.
3379  */
3380 static void
3381 _scsih_tm_tr_volume_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3382 {
3383         Mpi2SCSITaskManagementRequest_t *mpi_request;
3384         u16 smid;
3385         struct _tr_list *delayed_tr;
3386
3387         if (ioc->shost_recovery || ioc->remove_host ||
3388             ioc->pci_error_recovery) {
3389                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3390                         "%s: host reset in progress!\n",
3391                         __func__, ioc->name));
3392                 return;
3393         }
3394
3395         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_volume_cb_idx);
3396         if (!smid) {
3397                 delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3398                 if (!delayed_tr)
3399                         return;
3400                 INIT_LIST_HEAD(&delayed_tr->list);
3401                 delayed_tr->handle = handle;
3402                 list_add_tail(&delayed_tr->list, &ioc->delayed_tr_volume_list);
3403                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3404                     "DELAYED:tr:handle(0x%04x), (open)\n",
3405                     ioc->name, handle));
3406                 return;
3407         }
3408
3409         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3410                 "tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3411                 ioc->name, handle, smid,
3412             ioc->tm_tr_volume_cb_idx));
3413         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3414         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3415         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3416         mpi_request->DevHandle = cpu_to_le16(handle);
3417         mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3418         ioc->put_smid_hi_priority(ioc, smid, 0);
3419 }
3420
3421 /**
3422  * _scsih_tm_volume_tr_complete - target reset completion
3423  * @ioc: per adapter object
3424  * @smid: system request message index
3425  * @msix_index: MSIX table index supplied by the OS
3426  * @reply: reply message frame(lower 32bit addr)
3427  * Context: interrupt time.
3428  *
3429  * Return 1 meaning mf should be freed from _base_interrupt
3430  *        0 means the mf is freed from this function.
3431  */
3432 static u8
3433 _scsih_tm_volume_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3434         u8 msix_index, u32 reply)
3435 {
3436         u16 handle;
3437         Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3438         Mpi2SCSITaskManagementReply_t *mpi_reply =
3439             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3440
3441         if (ioc->shost_recovery || ioc->remove_host ||
3442             ioc->pci_error_recovery) {
3443                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3444                         "%s: host reset in progress!\n",
3445                         __func__, ioc->name));
3446                 return 1;
3447         }
3448         if (unlikely(!mpi_reply)) {
3449                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3450                     ioc->name, __FILE__, __LINE__, __func__);
3451                 return 1;
3452         }
3453
3454         mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3455         handle = le16_to_cpu(mpi_request_tm->DevHandle);
3456         if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3457                 dewtprintk(ioc, pr_err(MPT3SAS_FMT
3458                         "spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3459                         ioc->name, handle,
3460                     le16_to_cpu(mpi_reply->DevHandle), smid));
3461                 return 0;
3462         }
3463
3464         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3465             "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3466             "loginfo(0x%08x), completed(%d)\n", ioc->name,
3467             handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3468             le32_to_cpu(mpi_reply->IOCLogInfo),
3469             le32_to_cpu(mpi_reply->TerminationCount)));
3470
3471         return _scsih_check_for_pending_tm(ioc, smid);
3472 }
3473
3474 /**
3475  * _scsih_issue_delayed_event_ack - issue delayed Event ACK messages
3476  * @ioc: per adapter object
3477  * @smid: system request message index
3478  * @event: Event ID
3479  * @event_context: used to track events uniquely
3480  *
3481  * Context - processed in interrupt context.
3482  */
3483 static void
3484 _scsih_issue_delayed_event_ack(struct MPT3SAS_ADAPTER *ioc, u16 smid, u16 event,
3485                                 u32 event_context)
3486 {
3487         Mpi2EventAckRequest_t *ack_request;
3488         int i = smid - ioc->internal_smid;
3489         unsigned long flags;
3490
3491         /* Without releasing the smid just update the
3492          * call back index and reuse the same smid for
3493          * processing this delayed request
3494          */
3495         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3496         ioc->internal_lookup[i].cb_idx = ioc->base_cb_idx;
3497         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3498
3499         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3500                 "EVENT ACK: event(0x%04x), smid(%d), cb(%d)\n",
3501                 ioc->name, le16_to_cpu(event), smid,
3502                 ioc->base_cb_idx));
3503         ack_request = mpt3sas_base_get_msg_frame(ioc, smid);
3504         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
3505         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
3506         ack_request->Event = event;
3507         ack_request->EventContext = event_context;
3508         ack_request->VF_ID = 0;  /* TODO */
3509         ack_request->VP_ID = 0;
3510         ioc->put_smid_default(ioc, smid);
3511 }
3512
3513 /**
3514  * _scsih_issue_delayed_sas_io_unit_ctrl - issue delayed
3515  *                              sas_io_unit_ctrl messages
3516  * @ioc: per adapter object
3517  * @smid: system request message index
3518  * @handle: device handle
3519  *
3520  * Context - processed in interrupt context.
3521  */
3522 static void
3523 _scsih_issue_delayed_sas_io_unit_ctrl(struct MPT3SAS_ADAPTER *ioc,
3524                                         u16 smid, u16 handle)
3525         {
3526                 Mpi2SasIoUnitControlRequest_t *mpi_request;
3527                 u32 ioc_state;
3528                 int i = smid - ioc->internal_smid;
3529                 unsigned long flags;
3530
3531                 if (ioc->remove_host) {
3532                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3533                             "%s: host has been removed\n",
3534                              __func__, ioc->name));
3535                         return;
3536                 } else if (ioc->pci_error_recovery) {
3537                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3538                             "%s: host in pci error recovery\n",
3539                             __func__, ioc->name));
3540                 return;
3541         }
3542         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3543         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3544                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3545                     "%s: host is not operational\n",
3546                     __func__, ioc->name));
3547                 return;
3548         }
3549
3550         /* Without releasing the smid just update the
3551          * call back index and reuse the same smid for
3552          * processing this delayed request
3553          */
3554         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3555         ioc->internal_lookup[i].cb_idx = ioc->tm_sas_control_cb_idx;
3556         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3557
3558         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3559             "sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3560             ioc->name, le16_to_cpu(handle), smid,
3561             ioc->tm_sas_control_cb_idx));
3562         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3563         memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3564         mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3565         mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3566         mpi_request->DevHandle = handle;
3567         ioc->put_smid_default(ioc, smid);
3568 }
3569
3570 /**
3571  * _scsih_check_for_pending_internal_cmds - check for pending internal messages
3572  * @ioc: per adapter object
3573  * @smid: system request message index
3574  *
3575  * Context: Executed in interrupt context
3576  *
3577  * This will check delayed internal messages list, and process the
3578  * next request.
3579  *
3580  * Return 1 meaning mf should be freed from _base_interrupt
3581  *        0 means the mf is freed from this function.
3582  */
3583 u8
3584 mpt3sas_check_for_pending_internal_cmds(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3585 {
3586         struct _sc_list *delayed_sc;
3587         struct _event_ack_list *delayed_event_ack;
3588
3589         if (!list_empty(&ioc->delayed_event_ack_list)) {
3590                 delayed_event_ack = list_entry(ioc->delayed_event_ack_list.next,
3591                                                 struct _event_ack_list, list);
3592                 _scsih_issue_delayed_event_ack(ioc, smid,
3593                   delayed_event_ack->Event, delayed_event_ack->EventContext);
3594                 list_del(&delayed_event_ack->list);
3595                 kfree(delayed_event_ack);
3596                 return 0;
3597         }
3598
3599         if (!list_empty(&ioc->delayed_sc_list)) {
3600                 delayed_sc = list_entry(ioc->delayed_sc_list.next,
3601                                                 struct _sc_list, list);
3602                 _scsih_issue_delayed_sas_io_unit_ctrl(ioc, smid,
3603                                                  delayed_sc->handle);
3604                 list_del(&delayed_sc->list);
3605                 kfree(delayed_sc);
3606                 return 0;
3607         }
3608         return 1;
3609 }
3610
3611 /**
3612  * _scsih_check_for_pending_tm - check for pending task management
3613  * @ioc: per adapter object
3614  * @smid: system request message index
3615  *
3616  * This will check delayed target reset list, and feed the
3617  * next reqeust.
3618  *
3619  * Return 1 meaning mf should be freed from _base_interrupt
3620  *        0 means the mf is freed from this function.
3621  */
3622 static u8
3623 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3624 {
3625         struct _tr_list *delayed_tr;
3626
3627         if (!list_empty(&ioc->delayed_tr_volume_list)) {
3628                 delayed_tr = list_entry(ioc->delayed_tr_volume_list.next,
3629                     struct _tr_list, list);
3630                 mpt3sas_base_free_smid(ioc, smid);
3631                 _scsih_tm_tr_volume_send(ioc, delayed_tr->handle);
3632                 list_del(&delayed_tr->list);
3633                 kfree(delayed_tr);
3634                 return 0;
3635         }
3636
3637         if (!list_empty(&ioc->delayed_tr_list)) {
3638                 delayed_tr = list_entry(ioc->delayed_tr_list.next,
3639                     struct _tr_list, list);
3640                 mpt3sas_base_free_smid(ioc, smid);
3641                 _scsih_tm_tr_send(ioc, delayed_tr->handle);
3642                 list_del(&delayed_tr->list);
3643                 kfree(delayed_tr);
3644                 return 0;
3645         }
3646
3647         return 1;
3648 }
3649
3650 /**
3651  * _scsih_check_topo_delete_events - sanity check on topo events
3652  * @ioc: per adapter object
3653  * @event_data: the event data payload
3654  *
3655  * This routine added to better handle cable breaker.
3656  *
3657  * This handles the case where driver receives multiple expander
3658  * add and delete events in a single shot.  When there is a delete event
3659  * the routine will void any pending add events waiting in the event queue.
3660  *
3661  * Return nothing.
3662  */
3663 static void
3664 _scsih_check_topo_delete_events(struct MPT3SAS_ADAPTER *ioc,
3665         Mpi2EventDataSasTopologyChangeList_t *event_data)
3666 {
3667         struct fw_event_work *fw_event;
3668         Mpi2EventDataSasTopologyChangeList_t *local_event_data;
3669         u16 expander_handle;
3670         struct _sas_node *sas_expander;
3671         unsigned long flags;
3672         int i, reason_code;
3673         u16 handle;
3674
3675         for (i = 0 ; i < event_data->NumEntries; i++) {
3676                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3677                 if (!handle)
3678                         continue;
3679                 reason_code = event_data->PHY[i].PhyStatus &
3680                     MPI2_EVENT_SAS_TOPO_RC_MASK;
3681                 if (reason_code == MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING)
3682                         _scsih_tm_tr_send(ioc, handle);
3683         }
3684
3685         expander_handle = le16_to_cpu(event_data->ExpanderDevHandle);
3686         if (expander_handle < ioc->sas_hba.num_phys) {
3687                 _scsih_block_io_to_children_attached_directly(ioc, event_data);
3688                 return;
3689         }
3690         if (event_data->ExpStatus ==
3691             MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING) {
3692                 /* put expander attached devices into blocking state */
3693                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
3694                 sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
3695                     expander_handle);
3696                 _scsih_block_io_to_children_attached_to_ex(ioc, sas_expander);
3697                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
3698                 do {
3699                         handle = find_first_bit(ioc->blocking_handles,
3700                             ioc->facts.MaxDevHandle);
3701                         if (handle < ioc->facts.MaxDevHandle)
3702                                 _scsih_block_io_device(ioc, handle);
3703                 } while (test_and_clear_bit(handle, ioc->blocking_handles));
3704         } else if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_RESPONDING)
3705                 _scsih_block_io_to_children_attached_directly(ioc, event_data);
3706
3707         if (event_data->ExpStatus != MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING)
3708                 return;
3709
3710         /* mark ignore flag for pending events */
3711         spin_lock_irqsave(&ioc->fw_event_lock, flags);
3712         list_for_each_entry(fw_event, &ioc->fw_event_list, list) {
3713                 if (fw_event->event != MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST ||
3714                     fw_event->ignore)
3715                         continue;
3716                 local_event_data = (Mpi2EventDataSasTopologyChangeList_t *)
3717                                    fw_event->event_data;
3718                 if (local_event_data->ExpStatus ==
3719                     MPI2_EVENT_SAS_TOPO_ES_ADDED ||
3720                     local_event_data->ExpStatus ==
3721                     MPI2_EVENT_SAS_TOPO_ES_RESPONDING) {
3722                         if (le16_to_cpu(local_event_data->ExpanderDevHandle) ==
3723                             expander_handle) {
3724                                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3725                                     "setting ignoring flag\n", ioc->name));
3726                                 fw_event->ignore = 1;
3727                         }
3728                 }
3729         }
3730         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
3731 }
3732
3733 /**
3734  * _scsih_set_volume_delete_flag - setting volume delete flag
3735  * @ioc: per adapter object
3736  * @handle: device handle
3737  *
3738  * This returns nothing.
3739  */
3740 static void
3741 _scsih_set_volume_delete_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3742 {
3743         struct _raid_device *raid_device;
3744         struct MPT3SAS_TARGET *sas_target_priv_data;
3745         unsigned long flags;
3746
3747         spin_lock_irqsave(&ioc->raid_device_lock, flags);
3748         raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
3749         if (raid_device && raid_device->starget &&
3750             raid_device->starget->hostdata) {
3751                 sas_target_priv_data =
3752                     raid_device->starget->hostdata;
3753                 sas_target_priv_data->deleted = 1;
3754                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3755                     "setting delete flag: handle(0x%04x), "
3756                     "wwid(0x%016llx)\n", ioc->name, handle,
3757                     (unsigned long long) raid_device->wwid));
3758         }
3759         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
3760 }
3761
3762 /**
3763  * _scsih_set_volume_handle_for_tr - set handle for target reset to volume
3764  * @handle: input handle
3765  * @a: handle for volume a
3766  * @b: handle for volume b
3767  *
3768  * IR firmware only supports two raid volumes.  The purpose of this
3769  * routine is to set the volume handle in either a or b. When the given
3770  * input handle is non-zero, or when a and b have not been set before.
3771  */
3772 static void
3773 _scsih_set_volume_handle_for_tr(u16 handle, u16 *a, u16 *b)
3774 {
3775         if (!handle || handle == *a || handle == *b)
3776                 return;
3777         if (!*a)
3778                 *a = handle;
3779         else if (!*b)
3780                 *b = handle;
3781 }
3782
3783 /**
3784  * _scsih_check_ir_config_unhide_events - check for UNHIDE events
3785  * @ioc: per adapter object
3786  * @event_data: the event data payload
3787  * Context: interrupt time.
3788  *
3789  * This routine will send target reset to volume, followed by target
3790  * resets to the PDs. This is called when a PD has been removed, or
3791  * volume has been deleted or removed. When the target reset is sent
3792  * to volume, the PD target resets need to be queued to start upon
3793  * completion of the volume target reset.
3794  *
3795  * Return nothing.
3796  */
3797 static void
3798 _scsih_check_ir_config_unhide_events(struct MPT3SAS_ADAPTER *ioc,
3799         Mpi2EventDataIrConfigChangeList_t *event_data)
3800 {
3801         Mpi2EventIrConfigElement_t *element;
3802         int i;
3803         u16 handle, volume_handle, a, b;
3804         struct _tr_list *delayed_tr;
3805
3806         a = 0;
3807         b = 0;
3808
3809         if (ioc->is_warpdrive)
3810                 return;
3811
3812         /* Volume Resets for Deleted or Removed */
3813         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3814         for (i = 0; i < event_data->NumElements; i++, element++) {
3815                 if (le32_to_cpu(event_data->Flags) &
3816                     MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3817                         continue;
3818                 if (element->ReasonCode ==
3819                     MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED ||
3820                     element->ReasonCode ==
3821                     MPI2_EVENT_IR_CHANGE_RC_REMOVED) {
3822                         volume_handle = le16_to_cpu(element->VolDevHandle);
3823                         _scsih_set_volume_delete_flag(ioc, volume_handle);
3824                         _scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3825                 }
3826         }
3827
3828         /* Volume Resets for UNHIDE events */
3829         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3830         for (i = 0; i < event_data->NumElements; i++, element++) {
3831                 if (le32_to_cpu(event_data->Flags) &
3832                     MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3833                         continue;
3834                 if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_UNHIDE) {
3835                         volume_handle = le16_to_cpu(element->VolDevHandle);
3836                         _scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3837                 }
3838         }
3839
3840         if (a)
3841                 _scsih_tm_tr_volume_send(ioc, a);
3842         if (b)
3843                 _scsih_tm_tr_volume_send(ioc, b);
3844
3845         /* PD target resets */
3846         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3847         for (i = 0; i < event_data->NumElements; i++, element++) {
3848                 if (element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_UNHIDE)
3849                         continue;
3850                 handle = le16_to_cpu(element->PhysDiskDevHandle);
3851                 volume_handle = le16_to_cpu(element->VolDevHandle);
3852                 clear_bit(handle, ioc->pd_handles);
3853                 if (!volume_handle)
3854                         _scsih_tm_tr_send(ioc, handle);
3855                 else if (volume_handle == a || volume_handle == b) {
3856                         delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3857                         BUG_ON(!delayed_tr);
3858                         INIT_LIST_HEAD(&delayed_tr->list);
3859                         delayed_tr->handle = handle;
3860                         list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3861                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3862                             "DELAYED:tr:handle(0x%04x), (open)\n", ioc->name,
3863                             handle));
3864                 } else
3865                         _scsih_tm_tr_send(ioc, handle);
3866         }
3867 }
3868
3869
3870 /**
3871  * _scsih_check_volume_delete_events - set delete flag for volumes
3872  * @ioc: per adapter object
3873  * @event_data: the event data payload
3874  * Context: interrupt time.
3875  *
3876  * This will handle the case when the cable connected to entire volume is
3877  * pulled. We will take care of setting the deleted flag so normal IO will
3878  * not be sent.
3879  *
3880  * Return nothing.
3881  */
3882 static void
3883 _scsih_check_volume_delete_events(struct MPT3SAS_ADAPTER *ioc,
3884         Mpi2EventDataIrVolume_t *event_data)
3885 {
3886         u32 state;
3887
3888         if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
3889                 return;
3890         state = le32_to_cpu(event_data->NewValue);
3891         if (state == MPI2_RAID_VOL_STATE_MISSING || state ==
3892             MPI2_RAID_VOL_STATE_FAILED)
3893                 _scsih_set_volume_delete_flag(ioc,
3894                     le16_to_cpu(event_data->VolDevHandle));
3895 }
3896
3897 /**
3898  * _scsih_temp_threshold_events - display temperature threshold exceeded events
3899  * @ioc: per adapter object
3900  * @event_data: the temp threshold event data
3901  * Context: interrupt time.
3902  *
3903  * Return nothing.
3904  */
3905 static void
3906 _scsih_temp_threshold_events(struct MPT3SAS_ADAPTER *ioc,
3907         Mpi2EventDataTemperature_t *event_data)
3908 {
3909         if (ioc->temp_sensors_count >= event_data->SensorNum) {
3910                 pr_err(MPT3SAS_FMT "Temperature Threshold flags %s%s%s%s"
3911                   " exceeded for Sensor: %d !!!\n", ioc->name,
3912                   ((le16_to_cpu(event_data->Status) & 0x1) == 1) ? "0 " : " ",
3913                   ((le16_to_cpu(event_data->Status) & 0x2) == 2) ? "1 " : " ",
3914                   ((le16_to_cpu(event_data->Status) & 0x4) == 4) ? "2 " : " ",
3915                   ((le16_to_cpu(event_data->Status) & 0x8) == 8) ? "3 " : " ",
3916                   event_data->SensorNum);
3917                 pr_err(MPT3SAS_FMT "Current Temp In Celsius: %d\n",
3918                         ioc->name, event_data->CurrentTemperature);
3919         }
3920 }
3921
3922 static int _scsih_set_satl_pending(struct scsi_cmnd *scmd, bool pending)
3923 {
3924         struct MPT3SAS_DEVICE *priv = scmd->device->hostdata;
3925
3926         if (scmd->cmnd[0] != ATA_12 && scmd->cmnd[0] != ATA_16)
3927                 return 0;
3928
3929         if (pending)
3930                 return test_and_set_bit(0, &priv->ata_command_pending);
3931
3932         clear_bit(0, &priv->ata_command_pending);
3933         return 0;
3934 }
3935
3936 /**
3937  * _scsih_flush_running_cmds - completing outstanding commands.
3938  * @ioc: per adapter object
3939  *
3940  * The flushing out of all pending scmd commands following host reset,
3941  * where all IO is dropped to the floor.
3942  *
3943  * Return nothing.
3944  */
3945 static void
3946 _scsih_flush_running_cmds(struct MPT3SAS_ADAPTER *ioc)
3947 {
3948         struct scsi_cmnd *scmd;
3949         u16 smid;
3950         u16 count = 0;
3951
3952         for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
3953                 scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
3954                 if (!scmd)
3955                         continue;
3956                 count++;
3957                 _scsih_set_satl_pending(scmd, false);
3958                 mpt3sas_base_free_smid(ioc, smid);
3959                 scsi_dma_unmap(scmd);
3960                 if (ioc->pci_error_recovery)
3961                         scmd->result = DID_NO_CONNECT << 16;
3962                 else
3963                         scmd->result = DID_RESET << 16;
3964                 scmd->scsi_done(scmd);
3965         }
3966         dtmprintk(ioc, pr_info(MPT3SAS_FMT "completing %d cmds\n",
3967             ioc->name, count));
3968 }
3969
3970 /**
3971  * _scsih_setup_eedp - setup MPI request for EEDP transfer
3972  * @ioc: per adapter object
3973  * @scmd: pointer to scsi command object
3974  * @mpi_request: pointer to the SCSI_IO request message frame
3975  *
3976  * Supporting protection 1 and 3.
3977  *
3978  * Returns nothing
3979  */
3980 static void
3981 _scsih_setup_eedp(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
3982         Mpi2SCSIIORequest_t *mpi_request)
3983 {
3984         u16 eedp_flags;
3985         unsigned char prot_op = scsi_get_prot_op(scmd);
3986         unsigned char prot_type = scsi_get_prot_type(scmd);
3987         Mpi25SCSIIORequest_t *mpi_request_3v =
3988            (Mpi25SCSIIORequest_t *)mpi_request;
3989
3990         if (prot_type == SCSI_PROT_DIF_TYPE0 || prot_op == SCSI_PROT_NORMAL)
3991                 return;
3992
3993         if (prot_op ==  SCSI_PROT_READ_STRIP)
3994                 eedp_flags = MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP;
3995         else if (prot_op ==  SCSI_PROT_WRITE_INSERT)
3996                 eedp_flags = MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
3997         else
3998                 return;
3999
4000         switch (prot_type) {
4001         case SCSI_PROT_DIF_TYPE1:
4002         case SCSI_PROT_DIF_TYPE2:
4003
4004                 /*
4005                 * enable ref/guard checking
4006                 * auto increment ref tag
4007                 */
4008                 eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
4009                     MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
4010                     MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
4011                 mpi_request->CDB.EEDP32.PrimaryReferenceTag =
4012                     cpu_to_be32(scsi_prot_ref_tag(scmd));
4013                 break;
4014
4015         case SCSI_PROT_DIF_TYPE3:
4016
4017                 /*
4018                 * enable guard checking
4019                 */
4020                 eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
4021
4022                 break;
4023         }
4024
4025         mpi_request_3v->EEDPBlockSize =
4026             cpu_to_le16(scmd->device->sector_size);
4027
4028         if (ioc->is_gen35_ioc)
4029                 eedp_flags |= MPI25_SCSIIO_EEDPFLAGS_APPTAG_DISABLE_MODE;
4030         mpi_request->EEDPFlags = cpu_to_le16(eedp_flags);
4031 }
4032
4033 /**
4034  * _scsih_eedp_error_handling - return sense code for EEDP errors
4035  * @scmd: pointer to scsi command object
4036  * @ioc_status: ioc status
4037  *
4038  * Returns nothing
4039  */
4040 static void
4041 _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
4042 {
4043         u8 ascq;
4044
4045         switch (ioc_status) {
4046         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4047                 ascq = 0x01;
4048                 break;
4049         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4050                 ascq = 0x02;
4051                 break;
4052         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4053                 ascq = 0x03;
4054                 break;
4055         default:
4056                 ascq = 0x00;
4057                 break;
4058         }
4059         scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x10,
4060             ascq);
4061         scmd->result = DRIVER_SENSE << 24 | (DID_ABORT << 16) |
4062             SAM_STAT_CHECK_CONDITION;
4063 }
4064
4065 /**
4066  * scsih_qcmd - main scsi request entry point
4067  * @scmd: pointer to scsi command object
4068  * @done: function pointer to be invoked on completion
4069  *
4070  * The callback index is set inside `ioc->scsi_io_cb_idx`.
4071  *
4072  * Returns 0 on success.  If there's a failure, return either:
4073  * SCSI_MLQUEUE_DEVICE_BUSY if the device queue is full, or
4074  * SCSI_MLQUEUE_HOST_BUSY if the entire host queue is full
4075  */
4076 static int
4077 scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
4078 {
4079         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
4080         struct MPT3SAS_DEVICE *sas_device_priv_data;
4081         struct MPT3SAS_TARGET *sas_target_priv_data;
4082         struct _raid_device *raid_device;
4083         struct request *rq = scmd->request;
4084         int class;
4085         Mpi2SCSIIORequest_t *mpi_request;
4086         u32 mpi_control;
4087         u16 smid;
4088         u16 handle;
4089
4090         if (ioc->logging_level & MPT_DEBUG_SCSI)
4091                 scsi_print_command(scmd);
4092
4093         sas_device_priv_data = scmd->device->hostdata;
4094         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
4095                 scmd->result = DID_NO_CONNECT << 16;
4096                 scmd->scsi_done(scmd);
4097                 return 0;
4098         }
4099
4100         if (ioc->pci_error_recovery || ioc->remove_host) {
4101                 scmd->result = DID_NO_CONNECT << 16;
4102                 scmd->scsi_done(scmd);
4103                 return 0;
4104         }
4105
4106         /*
4107          * Bug work around for firmware SATL handling.  The loop
4108          * is based on atomic operations and ensures consistency
4109          * since we're lockless at this point
4110          */
4111         do {
4112                 if (test_bit(0, &sas_device_priv_data->ata_command_pending)) {
4113                         scmd->result = SAM_STAT_BUSY;
4114                         scmd->scsi_done(scmd);
4115                         return 0;
4116                 }
4117         } while (_scsih_set_satl_pending(scmd, true));
4118
4119         sas_target_priv_data = sas_device_priv_data->sas_target;
4120
4121         /* invalid device handle */
4122         handle = sas_target_priv_data->handle;
4123         if (handle == MPT3SAS_INVALID_DEVICE_HANDLE) {
4124                 scmd->result = DID_NO_CONNECT << 16;
4125                 scmd->scsi_done(scmd);
4126                 return 0;
4127         }
4128
4129
4130         /* host recovery or link resets sent via IOCTLs */
4131         if (ioc->shost_recovery || ioc->ioc_link_reset_in_progress)
4132                 return SCSI_MLQUEUE_HOST_BUSY;
4133
4134         /* device has been deleted */
4135         else if (sas_target_priv_data->deleted) {
4136                 scmd->result = DID_NO_CONNECT << 16;
4137                 scmd->scsi_done(scmd);
4138                 return 0;
4139         /* device busy with task management */
4140         } else if (sas_target_priv_data->tm_busy ||
4141             sas_device_priv_data->block)
4142                 return SCSI_MLQUEUE_DEVICE_BUSY;
4143
4144         if (scmd->sc_data_direction == DMA_FROM_DEVICE)
4145                 mpi_control = MPI2_SCSIIO_CONTROL_READ;
4146         else if (scmd->sc_data_direction == DMA_TO_DEVICE)
4147                 mpi_control = MPI2_SCSIIO_CONTROL_WRITE;
4148         else
4149                 mpi_control = MPI2_SCSIIO_CONTROL_NODATATRANSFER;
4150
4151         /* set tags */
4152         mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
4153         /* NCQ Prio supported, make sure control indicated high priority */
4154         if (sas_device_priv_data->ncq_prio_enable) {
4155                 class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
4156                 if (class == IOPRIO_CLASS_RT)
4157                         mpi_control |= 1 << MPI2_SCSIIO_CONTROL_CMDPRI_SHIFT;
4158         }
4159         /* Make sure Device is not raid volume.
4160          * We do not expose raid functionality to upper layer for warpdrive.
4161          */
4162         if (!ioc->is_warpdrive && !scsih_is_raid(&scmd->device->sdev_gendev)
4163             && sas_is_tlr_enabled(scmd->device) && scmd->cmd_len != 32)
4164                 mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
4165
4166         smid = mpt3sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);
4167         if (!smid) {
4168                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4169                     ioc->name, __func__);
4170                 goto out;
4171         }
4172         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4173         memset(mpi_request, 0, sizeof(Mpi2SCSIIORequest_t));
4174         _scsih_setup_eedp(ioc, scmd, mpi_request);
4175
4176         if (scmd->cmd_len == 32)
4177                 mpi_control |= 4 << MPI2_SCSIIO_CONTROL_ADDCDBLEN_SHIFT;
4178         mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4179         if (sas_device_priv_data->sas_target->flags &
4180             MPT_TARGET_FLAGS_RAID_COMPONENT)
4181                 mpi_request->Function = MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
4182         else
4183                 mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4184         mpi_request->DevHandle = cpu_to_le16(handle);
4185         mpi_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
4186         mpi_request->Control = cpu_to_le32(mpi_control);
4187         mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len);
4188         mpi_request->MsgFlags = MPI2_SCSIIO_MSGFLAGS_SYSTEM_SENSE_ADDR;
4189         mpi_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
4190         mpi_request->SenseBufferLowAddress =
4191             mpt3sas_base_get_sense_buffer_dma(ioc, smid);
4192         mpi_request->SGLOffset0 = offsetof(Mpi2SCSIIORequest_t, SGL) / 4;
4193         int_to_scsilun(sas_device_priv_data->lun, (struct scsi_lun *)
4194             mpi_request->LUN);
4195         memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4196
4197         if (mpi_request->DataLength) {
4198                 if (ioc->build_sg_scmd(ioc, scmd, smid)) {
4199                         mpt3sas_base_free_smid(ioc, smid);
4200                         goto out;
4201                 }
4202         } else
4203                 ioc->build_zero_len_sge(ioc, &mpi_request->SGL);
4204
4205         raid_device = sas_target_priv_data->raid_device;
4206         if (raid_device && raid_device->direct_io_enabled)
4207                 mpt3sas_setup_direct_io(ioc, scmd, raid_device, mpi_request,
4208                     smid);
4209
4210         if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)) {
4211                 if (sas_target_priv_data->flags & MPT_TARGET_FASTPATH_IO) {
4212                         mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len |
4213                             MPI25_SCSIIO_IOFLAGS_FAST_PATH);
4214                         ioc->put_smid_fast_path(ioc, smid, handle);
4215                 } else
4216                         ioc->put_smid_scsi_io(ioc, smid,
4217                             le16_to_cpu(mpi_request->DevHandle));
4218         } else
4219                 ioc->put_smid_default(ioc, smid);
4220         return 0;
4221
4222  out:
4223         return SCSI_MLQUEUE_HOST_BUSY;
4224 }
4225
4226 /**
4227  * _scsih_normalize_sense - normalize descriptor and fixed format sense data
4228  * @sense_buffer: sense data returned by target
4229  * @data: normalized skey/asc/ascq
4230  *
4231  * Return nothing.
4232  */
4233 static void
4234 _scsih_normalize_sense(char *sense_buffer, struct sense_info *data)
4235 {
4236         if ((sense_buffer[0] & 0x7F) >= 0x72) {
4237                 /* descriptor format */
4238                 data->skey = sense_buffer[1] & 0x0F;
4239                 data->asc = sense_buffer[2];
4240                 data->ascq = sense_buffer[3];
4241         } else {
4242                 /* fixed format */
4243                 data->skey = sense_buffer[2] & 0x0F;
4244                 data->asc = sense_buffer[12];
4245                 data->ascq = sense_buffer[13];
4246         }
4247 }
4248
4249 /**
4250  * _scsih_scsi_ioc_info - translated non-succesfull SCSI_IO request
4251  * @ioc: per adapter object
4252  * @scmd: pointer to scsi command object
4253  * @mpi_reply: reply mf payload returned from firmware
4254  *
4255  * scsi_status - SCSI Status code returned from target device
4256  * scsi_state - state info associated with SCSI_IO determined by ioc
4257  * ioc_status - ioc supplied status info
4258  *
4259  * Return nothing.
4260  */
4261 static void
4262 _scsih_scsi_ioc_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
4263         Mpi2SCSIIOReply_t *mpi_reply, u16 smid)
4264 {
4265         u32 response_info;
4266         u8 *response_bytes;
4267         u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
4268             MPI2_IOCSTATUS_MASK;
4269         u8 scsi_state = mpi_reply->SCSIState;
4270         u8 scsi_status = mpi_reply->SCSIStatus;
4271         char *desc_ioc_state = NULL;
4272         char *desc_scsi_status = NULL;
4273         char *desc_scsi_state = ioc->tmp_string;
4274         u32 log_info = le32_to_cpu(mpi_reply->IOCLogInfo);
4275         struct _sas_device *sas_device = NULL;
4276         struct scsi_target *starget = scmd->device->sdev_target;
4277         struct MPT3SAS_TARGET *priv_target = starget->hostdata;
4278         char *device_str = NULL;
4279
4280         if (!priv_target)
4281                 return;
4282         if (ioc->hide_ir_msg)
4283                 device_str = "WarpDrive";
4284         else
4285                 device_str = "volume";
4286
4287         if (log_info == 0x31170000)
4288                 return;
4289
4290         switch (ioc_status) {
4291         case MPI2_IOCSTATUS_SUCCESS:
4292                 desc_ioc_state = "success";
4293                 break;
4294         case MPI2_IOCSTATUS_INVALID_FUNCTION:
4295                 desc_ioc_state = "invalid function";
4296                 break;
4297         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4298                 desc_ioc_state = "scsi recovered error";
4299                 break;
4300         case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
4301                 desc_ioc_state = "scsi invalid dev handle";
4302                 break;
4303         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4304                 desc_ioc_state = "scsi device not there";
4305                 break;
4306         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4307                 desc_ioc_state = "scsi data overrun";
4308                 break;
4309         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4310                 desc_ioc_state = "scsi data underrun";
4311                 break;
4312         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4313                 desc_ioc_state = "scsi io data error";
4314                 break;
4315         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4316                 desc_ioc_state = "scsi protocol error";
4317                 break;
4318         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4319                 desc_ioc_state = "scsi task terminated";
4320                 break;
4321         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4322                 desc_ioc_state = "scsi residual mismatch";
4323                 break;
4324         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4325                 desc_ioc_state = "scsi task mgmt failed";
4326                 break;
4327         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4328                 desc_ioc_state = "scsi ioc terminated";
4329                 break;
4330         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4331                 desc_ioc_state = "scsi ext terminated";
4332                 break;
4333         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4334                 desc_ioc_state = "eedp guard error";
4335                 break;
4336         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4337                 desc_ioc_state = "eedp ref tag error";
4338                 break;
4339         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4340                 desc_ioc_state = "eedp app tag error";
4341                 break;
4342         case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4343                 desc_ioc_state = "insufficient power";
4344                 break;
4345         default:
4346                 desc_ioc_state = "unknown";
4347                 break;
4348         }
4349
4350         switch (scsi_status) {
4351         case MPI2_SCSI_STATUS_GOOD:
4352                 desc_scsi_status = "good";
4353                 break;
4354         case MPI2_SCSI_STATUS_CHECK_CONDITION:
4355                 desc_scsi_status = "check condition";
4356                 break;
4357         case MPI2_SCSI_STATUS_CONDITION_MET:
4358                 desc_scsi_status = "condition met";
4359                 break;
4360         case MPI2_SCSI_STATUS_BUSY:
4361                 desc_scsi_status = "busy";
4362                 break;
4363         case MPI2_SCSI_STATUS_INTERMEDIATE:
4364                 desc_scsi_status = "intermediate";
4365                 break;
4366         case MPI2_SCSI_STATUS_INTERMEDIATE_CONDMET:
4367                 desc_scsi_status = "intermediate condmet";
4368                 break;
4369         case MPI2_SCSI_STATUS_RESERVATION_CONFLICT:
4370                 desc_scsi_status = "reservation conflict";
4371                 break;
4372         case MPI2_SCSI_STATUS_COMMAND_TERMINATED:
4373                 desc_scsi_status = "command terminated";
4374                 break;
4375         case MPI2_SCSI_STATUS_TASK_SET_FULL:
4376                 desc_scsi_status = "task set full";
4377                 break;
4378         case MPI2_SCSI_STATUS_ACA_ACTIVE:
4379                 desc_scsi_status = "aca active";
4380                 break;
4381         case MPI2_SCSI_STATUS_TASK_ABORTED:
4382                 desc_scsi_status = "task aborted";
4383                 break;
4384         default:
4385                 desc_scsi_status = "unknown";
4386                 break;
4387         }
4388
4389         desc_scsi_state[0] = '\0';
4390         if (!scsi_state)
4391                 desc_scsi_state = " ";
4392         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4393                 strcat(desc_scsi_state, "response info ");
4394         if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4395                 strcat(desc_scsi_state, "state terminated ");
4396         if (scsi_state & MPI2_SCSI_STATE_NO_SCSI_STATUS)
4397                 strcat(desc_scsi_state, "no status ");
4398         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_FAILED)
4399                 strcat(desc_scsi_state, "autosense failed ");
4400         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID)
4401                 strcat(desc_scsi_state, "autosense valid ");
4402
4403         scsi_print_command(scmd);
4404
4405         if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
4406                 pr_warn(MPT3SAS_FMT "\t%s wwid(0x%016llx)\n", ioc->name,
4407                     device_str, (unsigned long long)priv_target->sas_address);
4408         } else {
4409                 sas_device = mpt3sas_get_sdev_from_target(ioc, priv_target);
4410                 if (sas_device) {
4411                         pr_warn(MPT3SAS_FMT
4412                                 "\tsas_address(0x%016llx), phy(%d)\n",
4413                                 ioc->name, (unsigned long long)
4414                             sas_device->sas_address, sas_device->phy);
4415                         if (sas_device->enclosure_handle != 0)
4416                                 pr_warn(MPT3SAS_FMT
4417                                   "\tenclosure_logical_id(0x%016llx),"
4418                                   "slot(%d)\n", ioc->name,
4419                                   (unsigned long long)
4420                                   sas_device->enclosure_logical_id,
4421                                   sas_device->slot);
4422                         if (sas_device->connector_name[0])
4423                                 pr_warn(MPT3SAS_FMT
4424                                   "\tenclosure level(0x%04x),"
4425                                   " connector name( %s)\n", ioc->name,
4426                                   sas_device->enclosure_level,
4427                                   sas_device->connector_name);
4428
4429                         sas_device_put(sas_device);
4430                 }
4431         }
4432
4433         pr_warn(MPT3SAS_FMT
4434                 "\thandle(0x%04x), ioc_status(%s)(0x%04x), smid(%d)\n",
4435                 ioc->name, le16_to_cpu(mpi_reply->DevHandle),
4436             desc_ioc_state, ioc_status, smid);
4437         pr_warn(MPT3SAS_FMT
4438                 "\trequest_len(%d), underflow(%d), resid(%d)\n",
4439                 ioc->name, scsi_bufflen(scmd), scmd->underflow,
4440             scsi_get_resid(scmd));
4441         pr_warn(MPT3SAS_FMT
4442                 "\ttag(%d), transfer_count(%d), sc->result(0x%08x)\n",
4443                 ioc->name, le16_to_cpu(mpi_reply->TaskTag),
4444             le32_to_cpu(mpi_reply->TransferCount), scmd->result);
4445         pr_warn(MPT3SAS_FMT
4446                 "\tscsi_status(%s)(0x%02x), scsi_state(%s)(0x%02x)\n",
4447                 ioc->name, desc_scsi_status,
4448             scsi_status, desc_scsi_state, scsi_state);
4449
4450         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4451                 struct sense_info data;
4452                 _scsih_normalize_sense(scmd->sense_buffer, &data);
4453                 pr_warn(MPT3SAS_FMT
4454                         "\t[sense_key,asc,ascq]: [0x%02x,0x%02x,0x%02x], count(%d)\n",
4455                         ioc->name, data.skey,
4456                     data.asc, data.ascq, le32_to_cpu(mpi_reply->SenseCount));
4457         }
4458
4459         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID) {
4460                 response_info = le32_to_cpu(mpi_reply->ResponseInfo);
4461                 response_bytes = (u8 *)&response_info;
4462                 _scsih_response_code(ioc, response_bytes[0]);
4463         }
4464 }
4465
4466 /**
4467  * _scsih_turn_on_pfa_led - illuminate PFA LED
4468  * @ioc: per adapter object
4469  * @handle: device handle
4470  * Context: process
4471  *
4472  * Return nothing.
4473  */
4474 static void
4475 _scsih_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4476 {
4477         Mpi2SepReply_t mpi_reply;
4478         Mpi2SepRequest_t mpi_request;
4479         struct _sas_device *sas_device;
4480
4481         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
4482         if (!sas_device)
4483                 return;
4484
4485         memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4486         mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4487         mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4488         mpi_request.SlotStatus =
4489             cpu_to_le32(MPI2_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
4490         mpi_request.DevHandle = cpu_to_le16(handle);
4491         mpi_request.Flags = MPI2_SEP_REQ_FLAGS_DEVHANDLE_ADDRESS;
4492         if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4493             &mpi_request)) != 0) {
4494                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4495                 __FILE__, __LINE__, __func__);
4496                 goto out;
4497         }
4498         sas_device->pfa_led_on = 1;
4499
4500         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4501                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
4502                         "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4503                         ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4504                     le32_to_cpu(mpi_reply.IOCLogInfo)));
4505                 goto out;
4506         }
4507 out:
4508         sas_device_put(sas_device);
4509 }
4510
4511 /**
4512  * _scsih_turn_off_pfa_led - turn off Fault LED
4513  * @ioc: per adapter object
4514  * @sas_device: sas device whose PFA LED has to turned off
4515  * Context: process
4516  *
4517  * Return nothing.
4518  */
4519 static void
4520 _scsih_turn_off_pfa_led(struct MPT3SAS_ADAPTER *ioc,
4521         struct _sas_device *sas_device)
4522 {
4523         Mpi2SepReply_t mpi_reply;
4524         Mpi2SepRequest_t mpi_request;
4525
4526         memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4527         mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4528         mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4529         mpi_request.SlotStatus = 0;
4530         mpi_request.Slot = cpu_to_le16(sas_device->slot);
4531         mpi_request.DevHandle = 0;
4532         mpi_request.EnclosureHandle = cpu_to_le16(sas_device->enclosure_handle);
4533         mpi_request.Flags = MPI2_SEP_REQ_FLAGS_ENCLOSURE_SLOT_ADDRESS;
4534         if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4535                 &mpi_request)) != 0) {
4536                 printk(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4537                 __FILE__, __LINE__, __func__);
4538                 return;
4539         }
4540
4541         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4542                 dewtprintk(ioc, printk(MPT3SAS_FMT
4543                  "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4544                  ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4545                  le32_to_cpu(mpi_reply.IOCLogInfo)));
4546                 return;
4547         }
4548 }
4549
4550 /**
4551  * _scsih_send_event_to_turn_on_pfa_led - fire delayed event
4552  * @ioc: per adapter object
4553  * @handle: device handle
4554  * Context: interrupt.
4555  *
4556  * Return nothing.
4557  */
4558 static void
4559 _scsih_send_event_to_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4560 {
4561         struct fw_event_work *fw_event;
4562
4563         fw_event = alloc_fw_event_work(0);
4564         if (!fw_event)
4565                 return;
4566         fw_event->event = MPT3SAS_TURN_ON_PFA_LED;
4567         fw_event->device_handle = handle;
4568         fw_event->ioc = ioc;
4569         _scsih_fw_event_add(ioc, fw_event);
4570         fw_event_work_put(fw_event);
4571 }
4572
4573 /**
4574  * _scsih_smart_predicted_fault - process smart errors
4575  * @ioc: per adapter object
4576  * @handle: device handle
4577  * Context: interrupt.
4578  *
4579  * Return nothing.
4580  */
4581 static void
4582 _scsih_smart_predicted_fault(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4583 {
4584         struct scsi_target *starget;
4585         struct MPT3SAS_TARGET *sas_target_priv_data;
4586         Mpi2EventNotificationReply_t *event_reply;
4587         Mpi2EventDataSasDeviceStatusChange_t *event_data;
4588         struct _sas_device *sas_device;
4589         ssize_t sz;
4590         unsigned long flags;
4591
4592         /* only handle non-raid devices */
4593         spin_lock_irqsave(&ioc->sas_device_lock, flags);
4594         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
4595         if (!sas_device)
4596                 goto out_unlock;
4597
4598         starget = sas_device->starget;
4599         sas_target_priv_data = starget->hostdata;
4600
4601         if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) ||
4602            ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)))
4603                 goto out_unlock;
4604
4605         if (sas_device->enclosure_handle != 0)
4606                 starget_printk(KERN_INFO, starget, "predicted fault, "
4607                         "enclosure logical id(0x%016llx), slot(%d)\n",
4608                         (unsigned long long)sas_device->enclosure_logical_id,
4609                         sas_device->slot);
4610         if (sas_device->connector_name[0] != '\0')
4611                 starget_printk(KERN_WARNING, starget, "predicted fault, "
4612                         "enclosure level(0x%04x), connector name( %s)\n",
4613                         sas_device->enclosure_level,
4614                         sas_device->connector_name);
4615         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4616
4617         if (ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
4618                 _scsih_send_event_to_turn_on_pfa_led(ioc, handle);
4619
4620         /* insert into event log */
4621         sz = offsetof(Mpi2EventNotificationReply_t, EventData) +
4622              sizeof(Mpi2EventDataSasDeviceStatusChange_t);
4623         event_reply = kzalloc(sz, GFP_KERNEL);
4624         if (!event_reply) {
4625                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4626                     ioc->name, __FILE__, __LINE__, __func__);
4627                 goto out;
4628         }
4629
4630         event_reply->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
4631         event_reply->Event =
4632             cpu_to_le16(MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4633         event_reply->MsgLength = sz/4;
4634         event_reply->EventDataLength =
4635             cpu_to_le16(sizeof(Mpi2EventDataSasDeviceStatusChange_t)/4);
4636         event_data = (Mpi2EventDataSasDeviceStatusChange_t *)
4637             event_reply->EventData;
4638         event_data->ReasonCode = MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA;
4639         event_data->ASC = 0x5D;
4640         event_data->DevHandle = cpu_to_le16(handle);
4641         event_data->SASAddress = cpu_to_le64(sas_target_priv_data->sas_address);
4642         mpt3sas_ctl_add_to_event_log(ioc, event_reply);
4643         kfree(event_reply);
4644 out:
4645         if (sas_device)
4646                 sas_device_put(sas_device);
4647         return;
4648
4649 out_unlock:
4650         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4651         goto out;
4652 }
4653
4654 /**
4655  * _scsih_io_done - scsi request callback
4656  * @ioc: per adapter object
4657  * @smid: system request message index
4658  * @msix_index: MSIX table index supplied by the OS
4659  * @reply: reply message frame(lower 32bit addr)
4660  *
4661  * Callback handler when using _scsih_qcmd.
4662  *
4663  * Return 1 meaning mf should be freed from _base_interrupt
4664  *        0 means the mf is freed from this function.
4665  */
4666 static u8
4667 _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
4668 {
4669         Mpi2SCSIIORequest_t *mpi_request;
4670         Mpi2SCSIIOReply_t *mpi_reply;
4671         struct scsi_cmnd *scmd;
4672         u16 ioc_status;
4673         u32 xfer_cnt;
4674         u8 scsi_state;
4675         u8 scsi_status;
4676         u32 log_info;
4677         struct MPT3SAS_DEVICE *sas_device_priv_data;
4678         u32 response_code = 0;
4679         unsigned long flags;
4680
4681         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
4682
4683         if (ioc->broadcast_aen_busy || ioc->pci_error_recovery ||
4684                         ioc->got_task_abort_from_ioctl)
4685                 scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
4686         else
4687                 scmd = __scsih_scsi_lookup_get_clear(ioc, smid);
4688
4689         if (scmd == NULL)
4690                 return 1;
4691
4692         _scsih_set_satl_pending(scmd, false);
4693
4694         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4695
4696         if (mpi_reply == NULL) {
4697                 scmd->result = DID_OK << 16;
4698                 goto out;
4699         }
4700
4701         sas_device_priv_data = scmd->device->hostdata;
4702         if (!sas_device_priv_data || !sas_device_priv_data->sas_target ||
4703              sas_device_priv_data->sas_target->deleted) {
4704                 scmd->result = DID_NO_CONNECT << 16;
4705                 goto out;
4706         }
4707         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
4708
4709         /*
4710          * WARPDRIVE: If direct_io is set then it is directIO,
4711          * the failed direct I/O should be redirected to volume
4712          */
4713         if (mpt3sas_scsi_direct_io_get(ioc, smid) &&
4714              ((ioc_status & MPI2_IOCSTATUS_MASK)
4715               != MPI2_IOCSTATUS_SCSI_TASK_TERMINATED)) {
4716                 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4717                 ioc->scsi_lookup[smid - 1].scmd = scmd;
4718                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4719                 mpt3sas_scsi_direct_io_set(ioc, smid, 0);
4720                 memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4721                 mpi_request->DevHandle =
4722                     cpu_to_le16(sas_device_priv_data->sas_target->handle);
4723                 ioc->put_smid_scsi_io(ioc, smid,
4724                     sas_device_priv_data->sas_target->handle);
4725                 return 0;
4726         }
4727         /* turning off TLR */
4728         scsi_state = mpi_reply->SCSIState;
4729         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4730                 response_code =
4731                     le32_to_cpu(mpi_reply->ResponseInfo) & 0xFF;
4732         if (!sas_device_priv_data->tlr_snoop_check) {
4733                 sas_device_priv_data->tlr_snoop_check++;
4734                 if (!ioc->is_warpdrive &&
4735                     !scsih_is_raid(&scmd->device->sdev_gendev) &&
4736                     sas_is_tlr_enabled(scmd->device) &&
4737                     response_code == MPI2_SCSITASKMGMT_RSP_INVALID_FRAME) {
4738                         sas_disable_tlr(scmd->device);
4739                         sdev_printk(KERN_INFO, scmd->device, "TLR disabled\n");
4740                 }
4741         }
4742
4743         xfer_cnt = le32_to_cpu(mpi_reply->TransferCount);
4744         scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_cnt);
4745         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
4746                 log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
4747         else
4748                 log_info = 0;
4749         ioc_status &= MPI2_IOCSTATUS_MASK;
4750         scsi_status = mpi_reply->SCSIStatus;
4751
4752         if (ioc_status == MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
4753             (scsi_status == MPI2_SCSI_STATUS_BUSY ||
4754              scsi_status == MPI2_SCSI_STATUS_RESERVATION_CONFLICT ||
4755              scsi_status == MPI2_SCSI_STATUS_TASK_SET_FULL)) {
4756                 ioc_status = MPI2_IOCSTATUS_SUCCESS;
4757         }
4758
4759         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4760                 struct sense_info data;
4761                 const void *sense_data = mpt3sas_base_get_sense_buffer(ioc,
4762                     smid);
4763                 u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
4764                     le32_to_cpu(mpi_reply->SenseCount));
4765                 memcpy(scmd->sense_buffer, sense_data, sz);
4766                 _scsih_normalize_sense(scmd->sense_buffer, &data);
4767                 /* failure prediction threshold exceeded */
4768                 if (data.asc == 0x5D)
4769                         _scsih_smart_predicted_fault(ioc,
4770                             le16_to_cpu(mpi_reply->DevHandle));
4771                 mpt3sas_trigger_scsi(ioc, data.skey, data.asc, data.ascq);
4772
4773                 if ((ioc->logging_level & MPT_DEBUG_REPLY) &&
4774                      ((scmd->sense_buffer[2] == UNIT_ATTENTION) ||
4775                      (scmd->sense_buffer[2] == MEDIUM_ERROR) ||
4776                      (scmd->sense_buffer[2] == HARDWARE_ERROR)))
4777                         _scsih_scsi_ioc_info(ioc, scmd, mpi_reply, smid);
4778         }
4779         switch (ioc_status) {
4780         case MPI2_IOCSTATUS_BUSY:
4781         case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
4782                 scmd->result = SAM_STAT_BUSY;
4783                 break;
4784
4785         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4786                 scmd->result = DID_NO_CONNECT << 16;
4787                 break;
4788
4789         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4790                 if (sas_device_priv_data->block) {
4791                         scmd->result = DID_TRANSPORT_DISRUPTED << 16;
4792                         goto out;
4793                 }
4794                 if (log_info == 0x31110630) {
4795                         if (scmd->retries > 2) {
4796                                 scmd->result = DID_NO_CONNECT << 16;
4797                                 scsi_device_set_state(scmd->device,
4798                                     SDEV_OFFLINE);
4799                         } else {
4800                                 scmd->result = DID_SOFT_ERROR << 16;
4801                                 scmd->device->expecting_cc_ua = 1;
4802                         }
4803                         break;
4804                 } else if (log_info == VIRTUAL_IO_FAILED_RETRY) {
4805                         scmd->result = DID_RESET << 16;
4806                         break;
4807                 }
4808                 scmd->result = DID_SOFT_ERROR << 16;
4809                 break;
4810         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4811         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4812                 scmd->result = DID_RESET << 16;
4813                 break;
4814
4815         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4816                 if ((xfer_cnt == 0) || (scmd->underflow > xfer_cnt))
4817                         scmd->result = DID_SOFT_ERROR << 16;
4818                 else
4819                         scmd->result = (DID_OK << 16) | scsi_status;
4820                 break;
4821
4822         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4823                 scmd->result = (DID_OK << 16) | scsi_status;
4824
4825                 if ((scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID))
4826                         break;
4827
4828                 if (xfer_cnt < scmd->underflow) {
4829                         if (scsi_status == SAM_STAT_BUSY)
4830                                 scmd->result = SAM_STAT_BUSY;
4831                         else
4832                                 scmd->result = DID_SOFT_ERROR << 16;
4833                 } else if (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4834                      MPI2_SCSI_STATE_NO_SCSI_STATUS))
4835                         scmd->result = DID_SOFT_ERROR << 16;
4836                 else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4837                         scmd->result = DID_RESET << 16;
4838                 else if (!xfer_cnt && scmd->cmnd[0] == REPORT_LUNS) {
4839                         mpi_reply->SCSIState = MPI2_SCSI_STATE_AUTOSENSE_VALID;
4840                         mpi_reply->SCSIStatus = SAM_STAT_CHECK_CONDITION;
4841                         scmd->result = (DRIVER_SENSE << 24) |
4842                             SAM_STAT_CHECK_CONDITION;
4843                         scmd->sense_buffer[0] = 0x70;
4844                         scmd->sense_buffer[2] = ILLEGAL_REQUEST;
4845                         scmd->sense_buffer[12] = 0x20;
4846                         scmd->sense_buffer[13] = 0;
4847                 }
4848                 break;
4849
4850         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4851                 scsi_set_resid(scmd, 0);
4852         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4853         case MPI2_IOCSTATUS_SUCCESS:
4854                 scmd->result = (DID_OK << 16) | scsi_status;
4855                 if (response_code ==
4856                     MPI2_SCSITASKMGMT_RSP_INVALID_FRAME ||
4857                     (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4858                      MPI2_SCSI_STATE_NO_SCSI_STATUS)))
4859                         scmd->result = DID_SOFT_ERROR << 16;
4860                 else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4861                         scmd->result = DID_RESET << 16;
4862                 break;
4863
4864         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4865         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4866         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4867                 _scsih_eedp_error_handling(scmd, ioc_status);
4868                 break;
4869
4870         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4871         case MPI2_IOCSTATUS_INVALID_FUNCTION:
4872         case MPI2_IOCSTATUS_INVALID_SGL:
4873         case MPI2_IOCSTATUS_INTERNAL_ERROR:
4874         case MPI2_IOCSTATUS_INVALID_FIELD:
4875         case MPI2_IOCSTATUS_INVALID_STATE:
4876         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4877         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4878         case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4879         default:
4880                 scmd->result = DID_SOFT_ERROR << 16;
4881                 break;
4882
4883         }
4884
4885         if (scmd->result && (ioc->logging_level & MPT_DEBUG_REPLY))
4886                 _scsih_scsi_ioc_info(ioc , scmd, mpi_reply, smid);
4887
4888  out:
4889
4890         scsi_dma_unmap(scmd);
4891
4892         scmd->scsi_done(scmd);
4893         return 1;
4894 }
4895
4896 /**
4897  * _scsih_sas_host_refresh - refreshing sas host object contents
4898  * @ioc: per adapter object
4899  * Context: user
4900  *
4901  * During port enable, fw will send topology events for every device. Its
4902  * possible that the handles may change from the previous setting, so this
4903  * code keeping handles updating if changed.
4904  *
4905  * Return nothing.
4906  */
4907 static void
4908 _scsih_sas_host_refresh(struct MPT3SAS_ADAPTER *ioc)
4909 {
4910         u16 sz;
4911         u16 ioc_status;
4912         int i;
4913         Mpi2ConfigReply_t mpi_reply;
4914         Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4915         u16 attached_handle;
4916         u8 link_rate;
4917
4918         dtmprintk(ioc, pr_info(MPT3SAS_FMT
4919             "updating handles for sas_host(0x%016llx)\n",
4920             ioc->name, (unsigned long long)ioc->sas_hba.sas_address));
4921
4922         sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys
4923             * sizeof(Mpi2SasIOUnit0PhyData_t));
4924         sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4925         if (!sas_iounit_pg0) {
4926                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4927                     ioc->name, __FILE__, __LINE__, __func__);
4928                 return;
4929         }
4930
4931         if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
4932             sas_iounit_pg0, sz)) != 0)
4933                 goto out;
4934         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
4935         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
4936                 goto out;
4937         for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
4938                 link_rate = sas_iounit_pg0->PhyData[i].NegotiatedLinkRate >> 4;
4939                 if (i == 0)
4940                         ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
4941                             PhyData[0].ControllerDevHandle);
4942                 ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
4943                 attached_handle = le16_to_cpu(sas_iounit_pg0->PhyData[i].
4944                     AttachedDevHandle);
4945                 if (attached_handle && link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
4946                         link_rate = MPI2_SAS_NEG_LINK_RATE_1_5;
4947                 mpt3sas_transport_update_links(ioc, ioc->sas_hba.sas_address,
4948                     attached_handle, i, link_rate);
4949         }
4950  out:
4951         kfree(sas_iounit_pg0);
4952 }
4953
4954 /**
4955  * _scsih_sas_host_add - create sas host object
4956  * @ioc: per adapter object
4957  *
4958  * Creating host side data object, stored in ioc->sas_hba
4959  *
4960  * Return nothing.
4961  */
4962 static void
4963 _scsih_sas_host_add(struct MPT3SAS_ADAPTER *ioc)
4964 {
4965         int i;
4966         Mpi2ConfigReply_t mpi_reply;
4967         Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4968         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
4969         Mpi2SasPhyPage0_t phy_pg0;
4970         Mpi2SasDevicePage0_t sas_device_pg0;
4971         Mpi2SasEnclosurePage0_t enclosure_pg0;
4972         u16 ioc_status;
4973         u16 sz;
4974         u8 device_missing_delay;
4975         u8 num_phys;
4976
4977         mpt3sas_config_get_number_hba_phys(ioc, &num_phys);
4978         if (!num_phys) {
4979                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4980                     ioc->name, __FILE__, __LINE__, __func__);
4981                 return;
4982         }
4983         ioc->sas_hba.phy = kcalloc(num_phys,
4984             sizeof(struct _sas_phy), GFP_KERNEL);
4985         if (!ioc->sas_hba.phy) {
4986                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4987                     ioc->name, __FILE__, __LINE__, __func__);
4988                 goto out;
4989         }
4990         ioc->sas_hba.num_phys = num_phys;
4991
4992         /* sas_iounit page 0 */
4993         sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
4994             sizeof(Mpi2SasIOUnit0PhyData_t));
4995         sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4996         if (!sas_iounit_pg0) {
4997                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4998                     ioc->name, __FILE__, __LINE__, __func__);
4999                 return;
5000         }
5001         if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
5002             sas_iounit_pg0, sz))) {
5003                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5004                     ioc->name, __FILE__, __LINE__, __func__);
5005                 goto out;
5006         }
5007         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5008             MPI2_IOCSTATUS_MASK;
5009         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5010                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5011                     ioc->name, __FILE__, __LINE__, __func__);
5012                 goto out;
5013         }
5014
5015         /* sas_iounit page 1 */
5016         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
5017             sizeof(Mpi2SasIOUnit1PhyData_t));
5018         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
5019         if (!sas_iounit_pg1) {
5020                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5021                     ioc->name, __FILE__, __LINE__, __func__);
5022                 goto out;
5023         }
5024         if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
5025             sas_iounit_pg1, sz))) {
5026                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5027                     ioc->name, __FILE__, __LINE__, __func__);
5028                 goto out;
5029         }
5030         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5031             MPI2_IOCSTATUS_MASK;
5032         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5033                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5034                     ioc->name, __FILE__, __LINE__, __func__);
5035                 goto out;
5036         }
5037
5038         ioc->io_missing_delay =
5039             sas_iounit_pg1->IODeviceMissingDelay;
5040         device_missing_delay =
5041             sas_iounit_pg1->ReportDeviceMissingDelay;
5042         if (device_missing_delay & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
5043                 ioc->device_missing_delay = (device_missing_delay &
5044                     MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
5045         else
5046                 ioc->device_missing_delay = device_missing_delay &
5047                     MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
5048
5049         ioc->sas_hba.parent_dev = &ioc->shost->shost_gendev;
5050         for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
5051                 if ((mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
5052                     i))) {
5053                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5054                             ioc->name, __FILE__, __LINE__, __func__);
5055                         goto out;
5056                 }
5057                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5058                     MPI2_IOCSTATUS_MASK;
5059                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5060                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5061                             ioc->name, __FILE__, __LINE__, __func__);
5062                         goto out;
5063                 }
5064
5065                 if (i == 0)
5066                         ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
5067                             PhyData[0].ControllerDevHandle);
5068                 ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
5069                 ioc->sas_hba.phy[i].phy_id = i;
5070                 mpt3sas_transport_add_host_phy(ioc, &ioc->sas_hba.phy[i],
5071                     phy_pg0, ioc->sas_hba.parent_dev);
5072         }
5073         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5074             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, ioc->sas_hba.handle))) {
5075                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5076                     ioc->name, __FILE__, __LINE__, __func__);
5077                 goto out;
5078         }
5079         ioc->sas_hba.enclosure_handle =
5080             le16_to_cpu(sas_device_pg0.EnclosureHandle);
5081         ioc->sas_hba.sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5082         pr_info(MPT3SAS_FMT
5083                 "host_add: handle(0x%04x), sas_addr(0x%016llx), phys(%d)\n",
5084                 ioc->name, ioc->sas_hba.handle,
5085             (unsigned long long) ioc->sas_hba.sas_address,
5086             ioc->sas_hba.num_phys) ;
5087
5088         if (ioc->sas_hba.enclosure_handle) {
5089                 if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5090                     &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5091                    ioc->sas_hba.enclosure_handle)))
5092                         ioc->sas_hba.enclosure_logical_id =
5093                             le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5094         }
5095
5096  out:
5097         kfree(sas_iounit_pg1);
5098         kfree(sas_iounit_pg0);
5099 }
5100
5101 /**
5102  * _scsih_expander_add -  creating expander object
5103  * @ioc: per adapter object
5104  * @handle: expander handle
5105  *
5106  * Creating expander object, stored in ioc->sas_expander_list.
5107  *
5108  * Return 0 for success, else error.
5109  */
5110 static int
5111 _scsih_expander_add(struct MPT3SAS_ADAPTER *ioc, u16 handle)
5112 {
5113         struct _sas_node *sas_expander;
5114         Mpi2ConfigReply_t mpi_reply;
5115         Mpi2ExpanderPage0_t expander_pg0;
5116         Mpi2ExpanderPage1_t expander_pg1;
5117         Mpi2SasEnclosurePage0_t enclosure_pg0;
5118         u32 ioc_status;
5119         u16 parent_handle;
5120         u64 sas_address, sas_address_parent = 0;
5121         int i;
5122         unsigned long flags;
5123         struct _sas_port *mpt3sas_port = NULL;
5124
5125         int rc = 0;
5126
5127         if (!handle)
5128                 return -1;
5129
5130         if (ioc->shost_recovery || ioc->pci_error_recovery)
5131                 return -1;
5132
5133         if ((mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
5134             MPI2_SAS_EXPAND_PGAD_FORM_HNDL, handle))) {
5135                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5136                     ioc->name, __FILE__, __LINE__, __func__);
5137                 return -1;
5138         }
5139
5140         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5141             MPI2_IOCSTATUS_MASK;
5142         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5143                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5144                     ioc->name, __FILE__, __LINE__, __func__);
5145                 return -1;
5146         }
5147
5148         /* handle out of order topology events */
5149         parent_handle = le16_to_cpu(expander_pg0.ParentDevHandle);
5150         if (_scsih_get_sas_address(ioc, parent_handle, &sas_address_parent)
5151             != 0) {
5152                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5153                     ioc->name, __FILE__, __LINE__, __func__);
5154                 return -1;
5155         }
5156         if (sas_address_parent != ioc->sas_hba.sas_address) {
5157                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
5158                 sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5159                     sas_address_parent);
5160                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5161                 if (!sas_expander) {
5162                         rc = _scsih_expander_add(ioc, parent_handle);
5163                         if (rc != 0)
5164                                 return rc;
5165                 }
5166         }
5167
5168         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5169         sas_address = le64_to_cpu(expander_pg0.SASAddress);
5170         sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5171             sas_address);
5172         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5173
5174         if (sas_expander)
5175                 return 0;
5176
5177         sas_expander = kzalloc(sizeof(struct _sas_node),
5178             GFP_KERNEL);
5179         if (!sas_expander) {
5180                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5181                     ioc->name, __FILE__, __LINE__, __func__);
5182                 return -1;
5183         }
5184
5185         sas_expander->handle = handle;
5186         sas_expander->num_phys = expander_pg0.NumPhys;
5187         sas_expander->sas_address_parent = sas_address_parent;
5188         sas_expander->sas_address = sas_address;
5189
5190         pr_info(MPT3SAS_FMT "expander_add: handle(0x%04x)," \
5191             " parent(0x%04x), sas_addr(0x%016llx), phys(%d)\n", ioc->name,
5192             handle, parent_handle, (unsigned long long)
5193             sas_expander->sas_address, sas_expander->num_phys);
5194
5195         if (!sas_expander->num_phys)
5196                 goto out_fail;
5197         sas_expander->phy = kcalloc(sas_expander->num_phys,
5198             sizeof(struct _sas_phy), GFP_KERNEL);
5199         if (!sas_expander->phy) {
5200                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5201                     ioc->name, __FILE__, __LINE__, __func__);
5202                 rc = -1;
5203                 goto out_fail;
5204         }
5205
5206         INIT_LIST_HEAD(&sas_expander->sas_port_list);
5207         mpt3sas_port = mpt3sas_transport_port_add(ioc, handle,
5208             sas_address_parent);
5209         if (!mpt3sas_port) {
5210                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5211                     ioc->name, __FILE__, __LINE__, __func__);
5212                 rc = -1;
5213                 goto out_fail;
5214         }
5215         sas_expander->parent_dev = &mpt3sas_port->rphy->dev;
5216
5217         for (i = 0 ; i < sas_expander->num_phys ; i++) {
5218                 if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
5219                     &expander_pg1, i, handle))) {
5220                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5221                             ioc->name, __FILE__, __LINE__, __func__);
5222                         rc = -1;
5223                         goto out_fail;
5224                 }
5225                 sas_expander->phy[i].handle = handle;
5226                 sas_expander->phy[i].phy_id = i;
5227
5228                 if ((mpt3sas_transport_add_expander_phy(ioc,
5229                     &sas_expander->phy[i], expander_pg1,
5230                     sas_expander->parent_dev))) {
5231                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5232                             ioc->name, __FILE__, __LINE__, __func__);
5233                         rc = -1;
5234                         goto out_fail;
5235                 }
5236         }
5237
5238         if (sas_expander->enclosure_handle) {
5239                 if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5240                     &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5241                    sas_expander->enclosure_handle)))
5242                         sas_expander->enclosure_logical_id =
5243                             le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5244         }
5245
5246         _scsih_expander_node_add(ioc, sas_expander);
5247          return 0;
5248
5249  out_fail:
5250
5251         if (mpt3sas_port)
5252                 mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
5253                     sas_address_parent);
5254         kfree(sas_expander);
5255         return rc;
5256 }
5257
5258 /**
5259  * mpt3sas_expander_remove - removing expander object
5260  * @ioc: per adapter object
5261  * @sas_address: expander sas_address
5262  *
5263  * Return nothing.
5264  */
5265 void
5266 mpt3sas_expander_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
5267 {
5268         struct _sas_node *sas_expander;
5269         unsigned long flags;
5270
5271         if (ioc->shost_recovery)
5272                 return;
5273
5274         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5275         sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5276             sas_address);
5277         if (sas_expander)
5278                 list_del(&sas_expander->list);
5279         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5280         if (sas_expander)
5281                 _scsih_expander_node_remove(ioc, sas_expander);
5282 }
5283
5284 /**
5285  * _scsih_done -  internal SCSI_IO callback handler.
5286  * @ioc: per adapter object
5287  * @smid: system request message index
5288  * @msix_index: MSIX table index supplied by the OS
5289  * @reply: reply message frame(lower 32bit addr)
5290  *
5291  * Callback handler when sending internal generated SCSI_IO.
5292  * The callback index passed is `ioc->scsih_cb_idx`
5293  *
5294  * Return 1 meaning mf should be freed from _base_interrupt
5295  *        0 means the mf is freed from this function.
5296  */
5297 static u8
5298 _scsih_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
5299 {
5300         MPI2DefaultReply_t *mpi_reply;
5301
5302         mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
5303         if (ioc->scsih_cmds.status == MPT3_CMD_NOT_USED)
5304                 return 1;
5305         if (ioc->scsih_cmds.smid != smid)
5306                 return 1;
5307         ioc->scsih_cmds.status |= MPT3_CMD_COMPLETE;
5308         if (mpi_reply) {
5309                 memcpy(ioc->scsih_cmds.reply, mpi_reply,
5310                     mpi_reply->MsgLength*4);
5311                 ioc->scsih_cmds.status |= MPT3_CMD_REPLY_VALID;
5312         }
5313         ioc->scsih_cmds.status &= ~MPT3_CMD_PENDING;
5314         complete(&ioc->scsih_cmds.done);
5315         return 1;
5316 }
5317
5318
5319
5320
5321 #define MPT3_MAX_LUNS (255)
5322
5323
5324 /**
5325  * _scsih_check_access_status - check access flags
5326  * @ioc: per adapter object
5327  * @sas_address: sas address
5328  * @handle: sas device handle
5329  * @access_flags: errors returned during discovery of the device
5330  *
5331  * Return 0 for success, else failure
5332  */
5333 static u8
5334 _scsih_check_access_status(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
5335         u16 handle, u8 access_status)
5336 {
5337         u8 rc = 1;
5338         char *desc = NULL;
5339
5340         switch (access_status) {
5341         case MPI2_SAS_DEVICE0_ASTATUS_NO_ERRORS:
5342         case MPI2_SAS_DEVICE0_ASTATUS_SATA_NEEDS_INITIALIZATION:
5343                 rc = 0;
5344                 break;
5345         case MPI2_SAS_DEVICE0_ASTATUS_SATA_CAPABILITY_FAILED:
5346                 desc = "sata capability failed";
5347                 break;
5348         case MPI2_SAS_DEVICE0_ASTATUS_SATA_AFFILIATION_CONFLICT:
5349                 desc = "sata affiliation conflict";
5350                 break;
5351         case MPI2_SAS_DEVICE0_ASTATUS_ROUTE_NOT_ADDRESSABLE:
5352                 desc = "route not addressable";
5353                 break;
5354         case MPI2_SAS_DEVICE0_ASTATUS_SMP_ERROR_NOT_ADDRESSABLE:
5355                 desc = "smp error not addressable";
5356                 break;
5357         case MPI2_SAS_DEVICE0_ASTATUS_DEVICE_BLOCKED:
5358                 desc = "device blocked";
5359                 break;
5360         case MPI2_SAS_DEVICE0_ASTATUS_SATA_INIT_FAILED:
5361         case MPI2_SAS_DEVICE0_ASTATUS_SIF_UNKNOWN:
5362         case MPI2_SAS_DEVICE0_ASTATUS_SIF_AFFILIATION_CONFLICT:
5363         case MPI2_SAS_DEVICE0_ASTATUS_SIF_DIAG:
5364         case MPI2_SAS_DEVICE0_ASTATUS_SIF_IDENTIFICATION:
5365         case MPI2_SAS_DEVICE0_ASTATUS_SIF_CHECK_POWER:
5366         case MPI2_SAS_DEVICE0_ASTATUS_SIF_PIO_SN:
5367         case MPI2_SAS_DEVICE0_ASTATUS_SIF_MDMA_SN:
5368         case MPI2_SAS_DEVICE0_ASTATUS_SIF_UDMA_SN:
5369         case MPI2_SAS_DEVICE0_ASTATUS_SIF_ZONING_VIOLATION:
5370         case MPI2_SAS_DEVICE0_ASTATUS_SIF_NOT_ADDRESSABLE:
5371         case MPI2_SAS_DEVICE0_ASTATUS_SIF_MAX:
5372                 desc = "sata initialization failed";
5373                 break;
5374         default:
5375                 desc = "unknown";
5376                 break;
5377         }
5378
5379         if (!rc)
5380                 return 0;
5381
5382         pr_err(MPT3SAS_FMT
5383                 "discovery errors(%s): sas_address(0x%016llx), handle(0x%04x)\n",
5384                 ioc->name, desc, (unsigned long long)sas_address, handle);
5385         return rc;
5386 }
5387
5388 /**
5389  * _scsih_check_device - checking device responsiveness
5390  * @ioc: per adapter object
5391  * @parent_sas_address: sas address of parent expander or sas host
5392  * @handle: attached device handle
5393  * @phy_numberv: phy number
5394  * @link_rate: new link rate
5395  *
5396  * Returns nothing.
5397  */
5398 static void
5399 _scsih_check_device(struct MPT3SAS_ADAPTER *ioc,
5400         u64 parent_sas_address, u16 handle, u8 phy_number, u8 link_rate)
5401 {
5402         Mpi2ConfigReply_t mpi_reply;
5403         Mpi2SasDevicePage0_t sas_device_pg0;
5404         struct _sas_device *sas_device;
5405         u32 ioc_status;
5406         unsigned long flags;
5407         u64 sas_address;
5408         struct scsi_target *starget;
5409         struct MPT3SAS_TARGET *sas_target_priv_data;
5410         u32 device_info;
5411
5412
5413         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5414             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle)))
5415                 return;
5416
5417         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
5418         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
5419                 return;
5420
5421         /* wide port handling ~ we need only handle device once for the phy that
5422          * is matched in sas device page zero
5423          */
5424         if (phy_number != sas_device_pg0.PhyNum)
5425                 return;
5426
5427         /* check if this is end device */
5428         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5429         if (!(_scsih_is_end_device(device_info)))
5430                 return;
5431
5432         spin_lock_irqsave(&ioc->sas_device_lock, flags);
5433         sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5434         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
5435             sas_address);
5436
5437         if (!sas_device)
5438                 goto out_unlock;
5439
5440         if (unlikely(sas_device->handle != handle)) {
5441                 starget = sas_device->starget;
5442                 sas_target_priv_data = starget->hostdata;
5443                 starget_printk(KERN_INFO, starget,
5444                         "handle changed from(0x%04x) to (0x%04x)!!!\n",
5445                         sas_device->handle, handle);
5446                 sas_target_priv_data->handle = handle;
5447                 sas_device->handle = handle;
5448                 if (le16_to_cpu(sas_device_pg0.Flags) &
5449                      MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5450                         sas_device->enclosure_level =
5451                                 sas_device_pg0.EnclosureLevel;
5452                         memcpy(sas_device->connector_name,
5453                                 sas_device_pg0.ConnectorName, 4);
5454                         sas_device->connector_name[4] = '\0';
5455                 } else {
5456                         sas_device->enclosure_level = 0;
5457                         sas_device->connector_name[0] = '\0';
5458                 }
5459         }
5460
5461         /* check if device is present */
5462         if (!(le16_to_cpu(sas_device_pg0.Flags) &
5463             MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5464                 pr_err(MPT3SAS_FMT
5465                         "device is not present handle(0x%04x), flags!!!\n",
5466                         ioc->name, handle);
5467                 goto out_unlock;
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                 goto out_unlock;
5474
5475         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5476         _scsih_ublock_io_device(ioc, sas_address);
5477
5478         if (sas_device)
5479                 sas_device_put(sas_device);
5480         return;
5481
5482 out_unlock:
5483         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5484         if (sas_device)
5485                 sas_device_put(sas_device);
5486 }
5487
5488 /**
5489  * _scsih_add_device -  creating sas device object
5490  * @ioc: per adapter object
5491  * @handle: sas device handle
5492  * @phy_num: phy number end device attached to
5493  * @is_pd: is this hidden raid component
5494  *
5495  * Creating end device object, stored in ioc->sas_device_list.
5496  *
5497  * Returns 0 for success, non-zero for failure.
5498  */
5499 static int
5500 _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phy_num,
5501         u8 is_pd)
5502 {
5503         Mpi2ConfigReply_t mpi_reply;
5504         Mpi2SasDevicePage0_t sas_device_pg0;
5505         Mpi2SasEnclosurePage0_t enclosure_pg0;
5506         struct _sas_device *sas_device;
5507         u32 ioc_status;
5508         u64 sas_address;
5509         u32 device_info;
5510
5511         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5512             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
5513                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5514                     ioc->name, __FILE__, __LINE__, __func__);
5515                 return -1;
5516         }
5517
5518         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5519             MPI2_IOCSTATUS_MASK;
5520         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5521                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5522                     ioc->name, __FILE__, __LINE__, __func__);
5523                 return -1;
5524         }
5525
5526         /* check if this is end device */
5527         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5528         if (!(_scsih_is_end_device(device_info)))
5529                 return -1;
5530         set_bit(handle, ioc->pend_os_device_add);
5531         sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5532
5533         /* check if device is present */
5534         if (!(le16_to_cpu(sas_device_pg0.Flags) &
5535             MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5536                 pr_err(MPT3SAS_FMT "device is not present handle(0x04%x)!!!\n",
5537                         ioc->name, handle);
5538                 return -1;
5539         }
5540
5541         /* check if there were any issues with discovery */
5542         if (_scsih_check_access_status(ioc, sas_address, handle,
5543             sas_device_pg0.AccessStatus))
5544                 return -1;
5545
5546         sas_device = mpt3sas_get_sdev_by_addr(ioc,
5547                                         sas_address);
5548         if (sas_device) {
5549                 clear_bit(handle, ioc->pend_os_device_add);
5550                 sas_device_put(sas_device);
5551                 return -1;
5552         }
5553
5554         sas_device = kzalloc(sizeof(struct _sas_device),
5555             GFP_KERNEL);
5556         if (!sas_device) {
5557                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5558                     ioc->name, __FILE__, __LINE__, __func__);
5559                 return 0;
5560         }
5561
5562         kref_init(&sas_device->refcount);
5563         sas_device->handle = handle;
5564         if (_scsih_get_sas_address(ioc,
5565             le16_to_cpu(sas_device_pg0.ParentDevHandle),
5566             &sas_device->sas_address_parent) != 0)
5567                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5568                     ioc->name, __FILE__, __LINE__, __func__);
5569         sas_device->enclosure_handle =
5570             le16_to_cpu(sas_device_pg0.EnclosureHandle);
5571         if (sas_device->enclosure_handle != 0)
5572                 sas_device->slot =
5573                     le16_to_cpu(sas_device_pg0.Slot);
5574         sas_device->device_info = device_info;
5575         sas_device->sas_address = sas_address;
5576         sas_device->phy = sas_device_pg0.PhyNum;
5577         sas_device->fast_path = (le16_to_cpu(sas_device_pg0.Flags) &
5578             MPI25_SAS_DEVICE0_FLAGS_FAST_PATH_CAPABLE) ? 1 : 0;
5579
5580         if (le16_to_cpu(sas_device_pg0.Flags)
5581                 & MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5582                 sas_device->enclosure_level =
5583                         sas_device_pg0.EnclosureLevel;
5584                 memcpy(sas_device->connector_name,
5585                         sas_device_pg0.ConnectorName, 4);
5586                 sas_device->connector_name[4] = '\0';
5587         } else {
5588                 sas_device->enclosure_level = 0;
5589                 sas_device->connector_name[0] = '\0';
5590         }
5591         /* get enclosure_logical_id */
5592         if (sas_device->enclosure_handle && !(mpt3sas_config_get_enclosure_pg0(
5593            ioc, &mpi_reply, &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5594            sas_device->enclosure_handle)))
5595                 sas_device->enclosure_logical_id =
5596                     le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5597
5598         /* get device name */
5599         sas_device->device_name = le64_to_cpu(sas_device_pg0.DeviceName);
5600
5601         if (ioc->wait_for_discovery_to_complete)
5602                 _scsih_sas_device_init_add(ioc, sas_device);
5603         else
5604                 _scsih_sas_device_add(ioc, sas_device);
5605
5606         sas_device_put(sas_device);
5607         return 0;
5608 }
5609
5610 /**
5611  * _scsih_remove_device -  removing sas device object
5612  * @ioc: per adapter object
5613  * @sas_device_delete: the sas_device object
5614  *
5615  * Return nothing.
5616  */
5617 static void
5618 _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
5619         struct _sas_device *sas_device)
5620 {
5621         struct MPT3SAS_TARGET *sas_target_priv_data;
5622
5623         if ((ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM) &&
5624              (sas_device->pfa_led_on)) {
5625                 _scsih_turn_off_pfa_led(ioc, sas_device);
5626                 sas_device->pfa_led_on = 0;
5627         }
5628         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5629                 "%s: enter: handle(0x%04x), sas_addr(0x%016llx)\n",
5630                 ioc->name, __func__,
5631             sas_device->handle, (unsigned long long)
5632             sas_device->sas_address));
5633         if (sas_device->enclosure_handle != 0)
5634                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5635                     "%s: enter: enclosure logical id(0x%016llx), slot(%d)\n",
5636                     ioc->name, __func__,
5637                     (unsigned long long)sas_device->enclosure_logical_id,
5638                     sas_device->slot));
5639         if (sas_device->connector_name[0] != '\0')
5640                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5641                   "%s: enter: enclosure level(0x%04x), connector name( %s)\n",
5642                   ioc->name, __func__,
5643                   sas_device->enclosure_level,
5644                   sas_device->connector_name));
5645
5646         if (sas_device->starget && sas_device->starget->hostdata) {
5647                 sas_target_priv_data = sas_device->starget->hostdata;
5648                 sas_target_priv_data->deleted = 1;
5649                 _scsih_ublock_io_device(ioc, sas_device->sas_address);
5650                 sas_target_priv_data->handle =
5651                      MPT3SAS_INVALID_DEVICE_HANDLE;
5652         }
5653
5654         if (!ioc->hide_drives)
5655                 mpt3sas_transport_port_remove(ioc,
5656                     sas_device->sas_address,
5657                     sas_device->sas_address_parent);
5658
5659         pr_info(MPT3SAS_FMT
5660                 "removing handle(0x%04x), sas_addr(0x%016llx)\n",
5661                 ioc->name, sas_device->handle,
5662             (unsigned long long) sas_device->sas_address);
5663         if (sas_device->enclosure_handle != 0)
5664                 pr_info(MPT3SAS_FMT
5665                   "removing : enclosure logical id(0x%016llx), slot(%d)\n",
5666                   ioc->name,
5667                   (unsigned long long)sas_device->enclosure_logical_id,
5668                   sas_device->slot);
5669         if (sas_device->connector_name[0] != '\0')
5670                 pr_info(MPT3SAS_FMT
5671                   "removing enclosure level(0x%04x), connector name( %s)\n",
5672                   ioc->name, sas_device->enclosure_level,
5673                   sas_device->connector_name);
5674
5675         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5676                 "%s: exit: handle(0x%04x), sas_addr(0x%016llx)\n",
5677                 ioc->name, __func__,
5678                 sas_device->handle, (unsigned long long)
5679                 sas_device->sas_address));
5680         if (sas_device->enclosure_handle != 0)
5681                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5682                     "%s: exit: enclosure logical id(0x%016llx), slot(%d)\n",
5683                     ioc->name, __func__,
5684                     (unsigned long long)sas_device->enclosure_logical_id,
5685                     sas_device->slot));
5686         if (sas_device->connector_name[0] != '\0')
5687                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5688                     "%s: exit: enclosure level(0x%04x), connector name(%s)\n",
5689                     ioc->name, __func__, sas_device->enclosure_level,
5690                     sas_device->connector_name));
5691 }
5692
5693 /**
5694  * _scsih_sas_topology_change_event_debug - debug for topology event
5695  * @ioc: per adapter object
5696  * @event_data: event data payload
5697  * Context: user.
5698  */
5699 static void
5700 _scsih_sas_topology_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5701         Mpi2EventDataSasTopologyChangeList_t *event_data)
5702 {
5703         int i;
5704         u16 handle;
5705         u16 reason_code;
5706         u8 phy_number;
5707         char *status_str = NULL;
5708         u8 link_rate, prev_link_rate;
5709
5710         switch (event_data->ExpStatus) {
5711         case MPI2_EVENT_SAS_TOPO_ES_ADDED:
5712                 status_str = "add";
5713                 break;
5714         case MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
5715                 status_str = "remove";
5716                 break;
5717         case MPI2_EVENT_SAS_TOPO_ES_RESPONDING:
5718         case 0:
5719                 status_str =  "responding";
5720                 break;
5721         case MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
5722                 status_str = "remove delay";
5723                 break;
5724         default:
5725                 status_str = "unknown status";
5726                 break;
5727         }
5728         pr_info(MPT3SAS_FMT "sas topology change: (%s)\n",
5729             ioc->name, status_str);
5730         pr_info("\thandle(0x%04x), enclosure_handle(0x%04x) " \
5731             "start_phy(%02d), count(%d)\n",
5732             le16_to_cpu(event_data->ExpanderDevHandle),
5733             le16_to_cpu(event_data->EnclosureHandle),
5734             event_data->StartPhyNum, event_data->NumEntries);
5735         for (i = 0; i < event_data->NumEntries; i++) {
5736                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5737                 if (!handle)
5738                         continue;
5739                 phy_number = event_data->StartPhyNum + i;
5740                 reason_code = event_data->PHY[i].PhyStatus &
5741                     MPI2_EVENT_SAS_TOPO_RC_MASK;
5742                 switch (reason_code) {
5743                 case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5744                         status_str = "target add";
5745                         break;
5746                 case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5747                         status_str = "target remove";
5748                         break;
5749                 case MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING:
5750                         status_str = "delay target remove";
5751                         break;
5752                 case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5753                         status_str = "link rate change";
5754                         break;
5755                 case MPI2_EVENT_SAS_TOPO_RC_NO_CHANGE:
5756                         status_str = "target responding";
5757                         break;
5758                 default:
5759                         status_str = "unknown";
5760                         break;
5761                 }
5762                 link_rate = event_data->PHY[i].LinkRate >> 4;
5763                 prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5764                 pr_info("\tphy(%02d), attached_handle(0x%04x): %s:" \
5765                     " link rate: new(0x%02x), old(0x%02x)\n", phy_number,
5766                     handle, status_str, link_rate, prev_link_rate);
5767
5768         }
5769 }
5770
5771 /**
5772  * _scsih_sas_topology_change_event - handle topology changes
5773  * @ioc: per adapter object
5774  * @fw_event: The fw_event_work object
5775  * Context: user.
5776  *
5777  */
5778 static int
5779 _scsih_sas_topology_change_event(struct MPT3SAS_ADAPTER *ioc,
5780         struct fw_event_work *fw_event)
5781 {
5782         int i;
5783         u16 parent_handle, handle;
5784         u16 reason_code;
5785         u8 phy_number, max_phys;
5786         struct _sas_node *sas_expander;
5787         u64 sas_address;
5788         unsigned long flags;
5789         u8 link_rate, prev_link_rate;
5790         Mpi2EventDataSasTopologyChangeList_t *event_data =
5791                 (Mpi2EventDataSasTopologyChangeList_t *)
5792                 fw_event->event_data;
5793
5794         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5795                 _scsih_sas_topology_change_event_debug(ioc, event_data);
5796
5797         if (ioc->shost_recovery || ioc->remove_host || ioc->pci_error_recovery)
5798                 return 0;
5799
5800         if (!ioc->sas_hba.num_phys)
5801                 _scsih_sas_host_add(ioc);
5802         else
5803                 _scsih_sas_host_refresh(ioc);
5804
5805         if (fw_event->ignore) {
5806                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5807                         "ignoring expander event\n", ioc->name));
5808                 return 0;
5809         }
5810
5811         parent_handle = le16_to_cpu(event_data->ExpanderDevHandle);
5812
5813         /* handle expander add */
5814         if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_ADDED)
5815                 if (_scsih_expander_add(ioc, parent_handle) != 0)
5816                         return 0;
5817
5818         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5819         sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
5820             parent_handle);
5821         if (sas_expander) {
5822                 sas_address = sas_expander->sas_address;
5823                 max_phys = sas_expander->num_phys;
5824         } else if (parent_handle < ioc->sas_hba.num_phys) {
5825                 sas_address = ioc->sas_hba.sas_address;
5826                 max_phys = ioc->sas_hba.num_phys;
5827         } else {
5828                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5829                 return 0;
5830         }
5831         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5832
5833         /* handle siblings events */
5834         for (i = 0; i < event_data->NumEntries; i++) {
5835                 if (fw_event->ignore) {
5836                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5837                                 "ignoring expander event\n", ioc->name));
5838                         return 0;
5839                 }
5840                 if (ioc->remove_host || ioc->pci_error_recovery)
5841                         return 0;
5842                 phy_number = event_data->StartPhyNum + i;
5843                 if (phy_number >= max_phys)
5844                         continue;
5845                 reason_code = event_data->PHY[i].PhyStatus &
5846                     MPI2_EVENT_SAS_TOPO_RC_MASK;
5847                 if ((event_data->PHY[i].PhyStatus &
5848                     MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT) && (reason_code !=
5849                     MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING))
5850                                 continue;
5851                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5852                 if (!handle)
5853                         continue;
5854                 link_rate = event_data->PHY[i].LinkRate >> 4;
5855                 prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5856                 switch (reason_code) {
5857                 case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5858
5859                         if (ioc->shost_recovery)
5860                                 break;
5861
5862                         if (link_rate == prev_link_rate)
5863                                 break;
5864
5865                         mpt3sas_transport_update_links(ioc, sas_address,
5866                             handle, phy_number, link_rate);
5867
5868                         if (link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
5869                                 break;
5870
5871                         _scsih_check_device(ioc, sas_address, handle,
5872                             phy_number, link_rate);
5873
5874                         if (!test_bit(handle, ioc->pend_os_device_add))
5875                                 break;
5876
5877
5878                 case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5879
5880                         if (ioc->shost_recovery)
5881                                 break;
5882
5883                         mpt3sas_transport_update_links(ioc, sas_address,
5884                             handle, phy_number, link_rate);
5885
5886                         _scsih_add_device(ioc, handle, phy_number, 0);
5887
5888                         break;
5889                 case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5890
5891                         _scsih_device_remove_by_handle(ioc, handle);
5892                         break;
5893                 }
5894         }
5895
5896         /* handle expander removal */
5897         if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING &&
5898             sas_expander)
5899                 mpt3sas_expander_remove(ioc, sas_address);
5900
5901         return 0;
5902 }
5903
5904 /**
5905  * _scsih_sas_device_status_change_event_debug - debug for device event
5906  * @event_data: event data payload
5907  * Context: user.
5908  *
5909  * Return nothing.
5910  */
5911 static void
5912 _scsih_sas_device_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5913         Mpi2EventDataSasDeviceStatusChange_t *event_data)
5914 {
5915         char *reason_str = NULL;
5916
5917         switch (event_data->ReasonCode) {
5918         case MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA:
5919                 reason_str = "smart data";
5920                 break;
5921         case MPI2_EVENT_SAS_DEV_STAT_RC_UNSUPPORTED:
5922                 reason_str = "unsupported device discovered";
5923                 break;
5924         case MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET:
5925                 reason_str = "internal device reset";
5926                 break;
5927         case MPI2_EVENT_SAS_DEV_STAT_RC_TASK_ABORT_INTERNAL:
5928                 reason_str = "internal task abort";
5929                 break;
5930         case MPI2_EVENT_SAS_DEV_STAT_RC_ABORT_TASK_SET_INTERNAL:
5931                 reason_str = "internal task abort set";
5932                 break;
5933         case MPI2_EVENT_SAS_DEV_STAT_RC_CLEAR_TASK_SET_INTERNAL:
5934                 reason_str = "internal clear task set";
5935                 break;
5936         case MPI2_EVENT_SAS_DEV_STAT_RC_QUERY_TASK_INTERNAL:
5937                 reason_str = "internal query task";
5938                 break;
5939         case MPI2_EVENT_SAS_DEV_STAT_RC_SATA_INIT_FAILURE:
5940                 reason_str = "sata init failure";
5941                 break;
5942         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET:
5943                 reason_str = "internal device reset complete";
5944                 break;
5945         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_TASK_ABORT_INTERNAL:
5946                 reason_str = "internal task abort complete";
5947                 break;
5948         case MPI2_EVENT_SAS_DEV_STAT_RC_ASYNC_NOTIFICATION:
5949                 reason_str = "internal async notification";
5950                 break;
5951         case MPI2_EVENT_SAS_DEV_STAT_RC_EXPANDER_REDUCED_FUNCTIONALITY:
5952                 reason_str = "expander reduced functionality";
5953                 break;
5954         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_EXPANDER_REDUCED_FUNCTIONALITY:
5955                 reason_str = "expander reduced functionality complete";
5956                 break;
5957         default:
5958                 reason_str = "unknown reason";
5959                 break;
5960         }
5961         pr_info(MPT3SAS_FMT "device status change: (%s)\n"
5962             "\thandle(0x%04x), sas address(0x%016llx), tag(%d)",
5963             ioc->name, reason_str, le16_to_cpu(event_data->DevHandle),
5964             (unsigned long long)le64_to_cpu(event_data->SASAddress),
5965             le16_to_cpu(event_data->TaskTag));
5966         if (event_data->ReasonCode == MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA)
5967                 pr_info(MPT3SAS_FMT ", ASC(0x%x), ASCQ(0x%x)\n", ioc->name,
5968                     event_data->ASC, event_data->ASCQ);
5969         pr_info("\n");
5970 }
5971
5972 /**
5973  * _scsih_sas_device_status_change_event - handle device status change
5974  * @ioc: per adapter object
5975  * @fw_event: The fw_event_work object
5976  * Context: user.
5977  *
5978  * Return nothing.
5979  */
5980 static void
5981 _scsih_sas_device_status_change_event(struct MPT3SAS_ADAPTER *ioc,
5982         struct fw_event_work *fw_event)
5983 {
5984         struct MPT3SAS_TARGET *target_priv_data;
5985         struct _sas_device *sas_device;
5986         u64 sas_address;
5987         unsigned long flags;
5988         Mpi2EventDataSasDeviceStatusChange_t *event_data =
5989                 (Mpi2EventDataSasDeviceStatusChange_t *)
5990                 fw_event->event_data;
5991
5992         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5993                 _scsih_sas_device_status_change_event_debug(ioc,
5994                      event_data);
5995
5996         /* In MPI Revision K (0xC), the internal device reset complete was
5997          * implemented, so avoid setting tm_busy flag for older firmware.
5998          */
5999         if ((ioc->facts.HeaderVersion >> 8) < 0xC)
6000                 return;
6001
6002         if (event_data->ReasonCode !=
6003             MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET &&
6004            event_data->ReasonCode !=
6005             MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET)
6006                 return;
6007
6008         spin_lock_irqsave(&ioc->sas_device_lock, flags);
6009         sas_address = le64_to_cpu(event_data->SASAddress);
6010         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
6011             sas_address);
6012
6013         if (!sas_device || !sas_device->starget)
6014                 goto out;
6015
6016         target_priv_data = sas_device->starget->hostdata;
6017         if (!target_priv_data)
6018                 goto out;
6019
6020         if (event_data->ReasonCode ==
6021             MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET)
6022                 target_priv_data->tm_busy = 1;
6023         else
6024                 target_priv_data->tm_busy = 0;
6025
6026 out:
6027         if (sas_device)
6028                 sas_device_put(sas_device);
6029
6030         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6031
6032 }
6033
6034 /**
6035  * _scsih_sas_enclosure_dev_status_change_event_debug - debug for enclosure
6036  * event
6037  * @ioc: per adapter object
6038  * @event_data: event data payload
6039  * Context: user.
6040  *
6041  * Return nothing.
6042  */
6043 static void
6044 _scsih_sas_enclosure_dev_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
6045         Mpi2EventDataSasEnclDevStatusChange_t *event_data)
6046 {
6047         char *reason_str = NULL;
6048
6049         switch (event_data->ReasonCode) {
6050         case MPI2_EVENT_SAS_ENCL_RC_ADDED:
6051                 reason_str = "enclosure add";
6052                 break;
6053         case MPI2_EVENT_SAS_ENCL_RC_NOT_RESPONDING:
6054                 reason_str = "enclosure remove";
6055                 break;
6056         default:
6057                 reason_str = "unknown reason";
6058                 break;
6059         }
6060
6061         pr_info(MPT3SAS_FMT "enclosure status change: (%s)\n"
6062             "\thandle(0x%04x), enclosure logical id(0x%016llx)"
6063             " number slots(%d)\n", ioc->name, reason_str,
6064             le16_to_cpu(event_data->EnclosureHandle),
6065             (unsigned long long)le64_to_cpu(event_data->EnclosureLogicalID),
6066             le16_to_cpu(event_data->StartSlot));
6067 }
6068
6069 /**
6070  * _scsih_sas_enclosure_dev_status_change_event - handle enclosure events
6071  * @ioc: per adapter object
6072  * @fw_event: The fw_event_work object
6073  * Context: user.
6074  *
6075  * Return nothing.
6076  */
6077 static void
6078 _scsih_sas_enclosure_dev_status_change_event(struct MPT3SAS_ADAPTER *ioc,
6079         struct fw_event_work *fw_event)
6080 {
6081         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
6082                 _scsih_sas_enclosure_dev_status_change_event_debug(ioc,
6083                      (Mpi2EventDataSasEnclDevStatusChange_t *)
6084                      fw_event->event_data);
6085 }
6086
6087 /**
6088  * _scsih_sas_broadcast_primitive_event - handle broadcast events
6089  * @ioc: per adapter object
6090  * @fw_event: The fw_event_work object
6091  * Context: user.
6092  *
6093  * Return nothing.
6094  */
6095 static void
6096 _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
6097         struct fw_event_work *fw_event)
6098 {
6099         struct scsi_cmnd *scmd;
6100         struct scsi_device *sdev;
6101         u16 smid, handle;
6102         u32 lun;
6103         struct MPT3SAS_DEVICE *sas_device_priv_data;
6104         u32 termination_count;
6105         u32 query_count;
6106         Mpi2SCSITaskManagementReply_t *mpi_reply;
6107         Mpi2EventDataSasBroadcastPrimitive_t *event_data =
6108                 (Mpi2EventDataSasBroadcastPrimitive_t *)
6109                 fw_event->event_data;
6110         u16 ioc_status;
6111         unsigned long flags;
6112         int r;
6113         u8 max_retries = 0;
6114         u8 task_abort_retries;
6115
6116         mutex_lock(&ioc->tm_cmds.mutex);
6117         pr_info(MPT3SAS_FMT
6118                 "%s: enter: phy number(%d), width(%d)\n",
6119                 ioc->name, __func__, event_data->PhyNum,
6120              event_data->PortWidth);
6121
6122         _scsih_block_io_all_device(ioc);
6123
6124         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6125         mpi_reply = ioc->tm_cmds.reply;
6126  broadcast_aen_retry:
6127
6128         /* sanity checks for retrying this loop */
6129         if (max_retries++ == 5) {
6130                 dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: giving up\n",
6131                     ioc->name, __func__));
6132                 goto out;
6133         } else if (max_retries > 1)
6134                 dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: %d retry\n",
6135                     ioc->name, __func__, max_retries - 1));
6136
6137         termination_count = 0;
6138         query_count = 0;
6139         for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
6140                 if (ioc->shost_recovery)
6141                         goto out;
6142                 scmd = _scsih_scsi_lookup_get(ioc, smid);
6143                 if (!scmd)
6144                         continue;
6145                 sdev = scmd->device;
6146                 sas_device_priv_data = sdev->hostdata;
6147                 if (!sas_device_priv_data || !sas_device_priv_data->sas_target)
6148                         continue;
6149                  /* skip hidden raid components */
6150                 if (sas_device_priv_data->sas_target->flags &
6151                     MPT_TARGET_FLAGS_RAID_COMPONENT)
6152                         continue;
6153                  /* skip volumes */
6154                 if (sas_device_priv_data->sas_target->flags &
6155                     MPT_TARGET_FLAGS_VOLUME)
6156                         continue;
6157
6158                 handle = sas_device_priv_data->sas_target->handle;
6159                 lun = sas_device_priv_data->lun;
6160                 query_count++;
6161
6162                 if (ioc->shost_recovery)
6163                         goto out;
6164
6165                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6166                 r = mpt3sas_scsih_issue_tm(ioc, handle, 0, 0, lun,
6167                     MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK, smid, 30);
6168                 if (r == FAILED) {
6169                         sdev_printk(KERN_WARNING, sdev,
6170                             "mpt3sas_scsih_issue_tm: FAILED when sending "
6171                             "QUERY_TASK: scmd(%p)\n", scmd);
6172                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6173                         goto broadcast_aen_retry;
6174                 }
6175                 ioc_status = le16_to_cpu(mpi_reply->IOCStatus)
6176                     & MPI2_IOCSTATUS_MASK;
6177                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6178                         sdev_printk(KERN_WARNING, sdev,
6179                                 "query task: FAILED with IOCSTATUS(0x%04x), scmd(%p)\n",
6180                                 ioc_status, scmd);
6181                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6182                         goto broadcast_aen_retry;
6183                 }
6184
6185                 /* see if IO is still owned by IOC and target */
6186                 if (mpi_reply->ResponseCode ==
6187                      MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED ||
6188                      mpi_reply->ResponseCode ==
6189                      MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC) {
6190                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6191                         continue;
6192                 }
6193                 task_abort_retries = 0;
6194  tm_retry:
6195                 if (task_abort_retries++ == 60) {
6196                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6197                             "%s: ABORT_TASK: giving up\n", ioc->name,
6198                             __func__));
6199                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6200                         goto broadcast_aen_retry;
6201                 }
6202
6203                 if (ioc->shost_recovery)
6204                         goto out_no_lock;
6205
6206                 r = mpt3sas_scsih_issue_tm(ioc, handle, sdev->channel, sdev->id,
6207                     sdev->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid,
6208                     30);
6209                 if (r == FAILED) {
6210                         sdev_printk(KERN_WARNING, sdev,
6211                             "mpt3sas_scsih_issue_tm: ABORT_TASK: FAILED : "
6212                             "scmd(%p)\n", scmd);
6213                         goto tm_retry;
6214                 }
6215
6216                 if (task_abort_retries > 1)
6217                         sdev_printk(KERN_WARNING, sdev,
6218                             "mpt3sas_scsih_issue_tm: ABORT_TASK: RETRIES (%d):"
6219                             " scmd(%p)\n",
6220                             task_abort_retries - 1, scmd);
6221
6222                 termination_count += le32_to_cpu(mpi_reply->TerminationCount);
6223                 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6224         }
6225
6226         if (ioc->broadcast_aen_pending) {
6227                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6228                         "%s: loop back due to pending AEN\n",
6229                         ioc->name, __func__));
6230                  ioc->broadcast_aen_pending = 0;
6231                  goto broadcast_aen_retry;
6232         }
6233
6234  out:
6235         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6236  out_no_lock:
6237
6238         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6239             "%s - exit, query_count = %d termination_count = %d\n",
6240             ioc->name, __func__, query_count, termination_count));
6241
6242         ioc->broadcast_aen_busy = 0;
6243         if (!ioc->shost_recovery)
6244                 _scsih_ublock_io_all_device(ioc);
6245         mutex_unlock(&ioc->tm_cmds.mutex);
6246 }
6247
6248 /**
6249  * _scsih_sas_discovery_event - handle discovery events
6250  * @ioc: per adapter object
6251  * @fw_event: The fw_event_work object
6252  * Context: user.
6253  *
6254  * Return nothing.
6255  */
6256 static void
6257 _scsih_sas_discovery_event(struct MPT3SAS_ADAPTER *ioc,
6258         struct fw_event_work *fw_event)
6259 {
6260         Mpi2EventDataSasDiscovery_t *event_data =
6261                 (Mpi2EventDataSasDiscovery_t *) fw_event->event_data;
6262
6263         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) {
6264                 pr_info(MPT3SAS_FMT "discovery event: (%s)", ioc->name,
6265                     (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
6266                     "start" : "stop");
6267                 if (event_data->DiscoveryStatus)
6268                         pr_info("discovery_status(0x%08x)",
6269                             le32_to_cpu(event_data->DiscoveryStatus));
6270                 pr_info("\n");
6271         }
6272
6273         if (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED &&
6274             !ioc->sas_hba.num_phys) {
6275                 if (disable_discovery > 0 && ioc->shost_recovery) {
6276                         /* Wait for the reset to complete */
6277                         while (ioc->shost_recovery)
6278                                 ssleep(1);
6279                 }
6280                 _scsih_sas_host_add(ioc);
6281         }
6282 }
6283
6284 /**
6285  * _scsih_ir_fastpath - turn on fastpath for IR physdisk
6286  * @ioc: per adapter object
6287  * @handle: device handle for physical disk
6288  * @phys_disk_num: physical disk number
6289  *
6290  * Return 0 for success, else failure.
6291  */
6292 static int
6293 _scsih_ir_fastpath(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phys_disk_num)
6294 {
6295         Mpi2RaidActionRequest_t *mpi_request;
6296         Mpi2RaidActionReply_t *mpi_reply;
6297         u16 smid;
6298         u8 issue_reset = 0;
6299         int rc = 0;
6300         u16 ioc_status;
6301         u32 log_info;
6302
6303         if (ioc->hba_mpi_version_belonged == MPI2_VERSION)
6304                 return rc;
6305
6306         mutex_lock(&ioc->scsih_cmds.mutex);
6307
6308         if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
6309                 pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
6310                     ioc->name, __func__);
6311                 rc = -EAGAIN;
6312                 goto out;
6313         }
6314         ioc->scsih_cmds.status = MPT3_CMD_PENDING;
6315
6316         smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
6317         if (!smid) {
6318                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
6319                     ioc->name, __func__);
6320                 ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6321                 rc = -EAGAIN;
6322                 goto out;
6323         }
6324
6325         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
6326         ioc->scsih_cmds.smid = smid;
6327         memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
6328
6329         mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
6330         mpi_request->Action = MPI2_RAID_ACTION_PHYSDISK_HIDDEN;
6331         mpi_request->PhysDiskNum = phys_disk_num;
6332
6333         dewtprintk(ioc, pr_info(MPT3SAS_FMT "IR RAID_ACTION: turning fast "\
6334             "path on for handle(0x%04x), phys_disk_num (0x%02x)\n", ioc->name,
6335             handle, phys_disk_num));
6336
6337         init_completion(&ioc->scsih_cmds.done);
6338         ioc->put_smid_default(ioc, smid);
6339         wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
6340
6341         if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
6342                 pr_err(MPT3SAS_FMT "%s: timeout\n",
6343                     ioc->name, __func__);
6344                 if (!(ioc->scsih_cmds.status & MPT3_CMD_RESET))
6345                         issue_reset = 1;
6346                 rc = -EFAULT;
6347                 goto out;
6348         }
6349
6350         if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
6351
6352                 mpi_reply = ioc->scsih_cmds.reply;
6353                 ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
6354                 if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
6355                         log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
6356                 else
6357                         log_info = 0;
6358                 ioc_status &= MPI2_IOCSTATUS_MASK;
6359                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6360                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6361                             "IR RAID_ACTION: failed: ioc_status(0x%04x), "
6362                             "loginfo(0x%08x)!!!\n", ioc->name, ioc_status,
6363                             log_info));
6364                         rc = -EFAULT;
6365                 } else
6366                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6367                             "IR RAID_ACTION: completed successfully\n",
6368                             ioc->name));
6369         }
6370
6371  out:
6372         ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6373         mutex_unlock(&ioc->scsih_cmds.mutex);
6374
6375         if (issue_reset)
6376                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
6377         return rc;
6378 }
6379
6380 /**
6381  * _scsih_reprobe_lun - reprobing lun
6382  * @sdev: scsi device struct
6383  * @no_uld_attach: sdev->no_uld_attach flag setting
6384  *
6385  **/
6386 static void
6387 _scsih_reprobe_lun(struct scsi_device *sdev, void *no_uld_attach)
6388 {
6389         sdev->no_uld_attach = no_uld_attach ? 1 : 0;
6390         sdev_printk(KERN_INFO, sdev, "%s raid component\n",
6391             sdev->no_uld_attach ? "hiding" : "exposing");
6392         WARN_ON(scsi_device_reprobe(sdev));
6393 }
6394
6395 /**
6396  * _scsih_sas_volume_add - add new volume
6397  * @ioc: per adapter object
6398  * @element: IR config element data
6399  * Context: user.
6400  *
6401  * Return nothing.
6402  */
6403 static void
6404 _scsih_sas_volume_add(struct MPT3SAS_ADAPTER *ioc,
6405         Mpi2EventIrConfigElement_t *element)
6406 {
6407         struct _raid_device *raid_device;
6408         unsigned long flags;
6409         u64 wwid;
6410         u16 handle = le16_to_cpu(element->VolDevHandle);
6411         int rc;
6412
6413         mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6414         if (!wwid) {
6415                 pr_err(MPT3SAS_FMT
6416                     "failure at %s:%d/%s()!\n", ioc->name,
6417                     __FILE__, __LINE__, __func__);
6418                 return;
6419         }
6420
6421         spin_lock_irqsave(&ioc->raid_device_lock, flags);
6422         raid_device = _scsih_raid_device_find_by_wwid(ioc, wwid);
6423         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6424
6425         if (raid_device)
6426                 return;
6427
6428         raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6429         if (!raid_device) {
6430                 pr_err(MPT3SAS_FMT
6431                     "failure at %s:%d/%s()!\n", ioc->name,
6432                     __FILE__, __LINE__, __func__);
6433                 return;
6434         }
6435
6436         raid_device->id = ioc->sas_id++;
6437         raid_device->channel = RAID_CHANNEL;
6438         raid_device->handle = handle;
6439         raid_device->wwid = wwid;
6440         _scsih_raid_device_add(ioc, raid_device);
6441         if (!ioc->wait_for_discovery_to_complete) {
6442                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6443                     raid_device->id, 0);
6444                 if (rc)
6445                         _scsih_raid_device_remove(ioc, raid_device);
6446         } else {
6447                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
6448                 _scsih_determine_boot_device(ioc, raid_device, 1);
6449                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6450         }
6451 }
6452
6453 /**
6454  * _scsih_sas_volume_delete - delete volume
6455  * @ioc: per adapter object
6456  * @handle: volume device handle
6457  * Context: user.
6458  *
6459  * Return nothing.
6460  */
6461 static void
6462 _scsih_sas_volume_delete(struct MPT3SAS_ADAPTER *ioc, u16 handle)
6463 {
6464         struct _raid_device *raid_device;
6465         unsigned long flags;
6466         struct MPT3SAS_TARGET *sas_target_priv_data;
6467         struct scsi_target *starget = NULL;
6468
6469         spin_lock_irqsave(&ioc->raid_device_lock, flags);
6470         raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6471         if (raid_device) {
6472                 if (raid_device->starget) {
6473                         starget = raid_device->starget;
6474                         sas_target_priv_data = starget->hostdata;
6475                         sas_target_priv_data->deleted = 1;
6476                 }
6477                 pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
6478                         ioc->name,  raid_device->handle,
6479                     (unsigned long long) raid_device->wwid);
6480                 list_del(&raid_device->list);
6481                 kfree(raid_device);
6482         }
6483         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6484         if (starget)
6485                 scsi_remove_target(&starget->dev);
6486 }
6487
6488 /**
6489  * _scsih_sas_pd_expose - expose pd component to /dev/sdX
6490  * @ioc: per adapter object
6491  * @element: IR config element data
6492  * Context: user.
6493  *
6494  * Return nothing.
6495  */
6496 static void
6497 _scsih_sas_pd_expose(struct MPT3SAS_ADAPTER *ioc,
6498         Mpi2EventIrConfigElement_t *element)
6499 {
6500         struct _sas_device *sas_device;
6501         struct scsi_target *starget = NULL;
6502         struct MPT3SAS_TARGET *sas_target_priv_data;
6503         unsigned long flags;
6504         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6505
6506         spin_lock_irqsave(&ioc->sas_device_lock, flags);
6507         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6508         if (sas_device) {
6509                 sas_device->volume_handle = 0;
6510                 sas_device->volume_wwid = 0;
6511                 clear_bit(handle, ioc->pd_handles);
6512                 if (sas_device->starget && sas_device->starget->hostdata) {
6513                         starget = sas_device->starget;
6514                         sas_target_priv_data = starget->hostdata;
6515                         sas_target_priv_data->flags &=
6516                             ~MPT_TARGET_FLAGS_RAID_COMPONENT;
6517                 }
6518         }
6519         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6520         if (!sas_device)
6521                 return;
6522
6523         /* exposing raid component */
6524         if (starget)
6525                 starget_for_each_device(starget, NULL, _scsih_reprobe_lun);
6526
6527         sas_device_put(sas_device);
6528 }
6529
6530 /**
6531  * _scsih_sas_pd_hide - hide pd component from /dev/sdX
6532  * @ioc: per adapter object
6533  * @element: IR config element data
6534  * Context: user.
6535  *
6536  * Return nothing.
6537  */
6538 static void
6539 _scsih_sas_pd_hide(struct MPT3SAS_ADAPTER *ioc,
6540         Mpi2EventIrConfigElement_t *element)
6541 {
6542         struct _sas_device *sas_device;
6543         struct scsi_target *starget = NULL;
6544         struct MPT3SAS_TARGET *sas_target_priv_data;
6545         unsigned long flags;
6546         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6547         u16 volume_handle = 0;
6548         u64 volume_wwid = 0;
6549
6550         mpt3sas_config_get_volume_handle(ioc, handle, &volume_handle);
6551         if (volume_handle)
6552                 mpt3sas_config_get_volume_wwid(ioc, volume_handle,
6553                     &volume_wwid);
6554
6555         spin_lock_irqsave(&ioc->sas_device_lock, flags);
6556         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6557         if (sas_device) {
6558                 set_bit(handle, ioc->pd_handles);
6559                 if (sas_device->starget && sas_device->starget->hostdata) {
6560                         starget = sas_device->starget;
6561                         sas_target_priv_data = starget->hostdata;
6562                         sas_target_priv_data->flags |=
6563                             MPT_TARGET_FLAGS_RAID_COMPONENT;
6564                         sas_device->volume_handle = volume_handle;
6565                         sas_device->volume_wwid = volume_wwid;
6566                 }
6567         }
6568         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6569         if (!sas_device)
6570                 return;
6571
6572         /* hiding raid component */
6573         _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6574
6575         if (starget)
6576                 starget_for_each_device(starget, (void *)1, _scsih_reprobe_lun);
6577
6578         sas_device_put(sas_device);
6579 }
6580
6581 /**
6582  * _scsih_sas_pd_delete - delete pd component
6583  * @ioc: per adapter object
6584  * @element: IR config element data
6585  * Context: user.
6586  *
6587  * Return nothing.
6588  */
6589 static void
6590 _scsih_sas_pd_delete(struct MPT3SAS_ADAPTER *ioc,
6591         Mpi2EventIrConfigElement_t *element)
6592 {
6593         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6594
6595         _scsih_device_remove_by_handle(ioc, handle);
6596 }
6597
6598 /**
6599  * _scsih_sas_pd_add - remove pd component
6600  * @ioc: per adapter object
6601  * @element: IR config element data
6602  * Context: user.
6603  *
6604  * Return nothing.
6605  */
6606 static void
6607 _scsih_sas_pd_add(struct MPT3SAS_ADAPTER *ioc,
6608         Mpi2EventIrConfigElement_t *element)
6609 {
6610         struct _sas_device *sas_device;
6611         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6612         Mpi2ConfigReply_t mpi_reply;
6613         Mpi2SasDevicePage0_t sas_device_pg0;
6614         u32 ioc_status;
6615         u64 sas_address;
6616         u16 parent_handle;
6617
6618         set_bit(handle, ioc->pd_handles);
6619
6620         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6621         if (sas_device) {
6622                 _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6623                 sas_device_put(sas_device);
6624                 return;
6625         }
6626
6627         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
6628             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
6629                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6630                     ioc->name, __FILE__, __LINE__, __func__);
6631                 return;
6632         }
6633
6634         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6635             MPI2_IOCSTATUS_MASK;
6636         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6637                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6638                     ioc->name, __FILE__, __LINE__, __func__);
6639                 return;
6640         }
6641
6642         parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6643         if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6644                 mpt3sas_transport_update_links(ioc, sas_address, handle,
6645                     sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6646
6647         _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6648         _scsih_add_device(ioc, handle, 0, 1);
6649 }
6650
6651 /**
6652  * _scsih_sas_ir_config_change_event_debug - debug for IR Config Change events
6653  * @ioc: per adapter object
6654  * @event_data: event data payload
6655  * Context: user.
6656  *
6657  * Return nothing.
6658  */
6659 static void
6660 _scsih_sas_ir_config_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
6661         Mpi2EventDataIrConfigChangeList_t *event_data)
6662 {
6663         Mpi2EventIrConfigElement_t *element;
6664         u8 element_type;
6665         int i;
6666         char *reason_str = NULL, *element_str = NULL;
6667
6668         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6669
6670         pr_info(MPT3SAS_FMT "raid config change: (%s), elements(%d)\n",
6671             ioc->name, (le32_to_cpu(event_data->Flags) &
6672             MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ?
6673             "foreign" : "native", event_data->NumElements);
6674         for (i = 0; i < event_data->NumElements; i++, element++) {
6675                 switch (element->ReasonCode) {
6676                 case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6677                         reason_str = "add";
6678                         break;
6679                 case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6680                         reason_str = "remove";
6681                         break;
6682                 case MPI2_EVENT_IR_CHANGE_RC_NO_CHANGE:
6683                         reason_str = "no change";
6684                         break;
6685                 case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6686                         reason_str = "hide";
6687                         break;
6688                 case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6689                         reason_str = "unhide";
6690                         break;
6691                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6692                         reason_str = "volume_created";
6693                         break;
6694                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6695                         reason_str = "volume_deleted";
6696                         break;
6697                 case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6698                         reason_str = "pd_created";
6699                         break;
6700                 case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6701                         reason_str = "pd_deleted";
6702                         break;
6703                 default:
6704                         reason_str = "unknown reason";
6705                         break;
6706                 }
6707                 element_type = le16_to_cpu(element->ElementFlags) &
6708                     MPI2_EVENT_IR_CHANGE_EFLAGS_ELEMENT_TYPE_MASK;
6709                 switch (element_type) {
6710                 case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLUME_ELEMENT:
6711                         element_str = "volume";
6712                         break;
6713                 case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLPHYSDISK_ELEMENT:
6714                         element_str = "phys disk";
6715                         break;
6716                 case MPI2_EVENT_IR_CHANGE_EFLAGS_HOTSPARE_ELEMENT:
6717                         element_str = "hot spare";
6718                         break;
6719                 default:
6720                         element_str = "unknown element";
6721                         break;
6722                 }
6723                 pr_info("\t(%s:%s), vol handle(0x%04x), " \
6724                     "pd handle(0x%04x), pd num(0x%02x)\n", element_str,
6725                     reason_str, le16_to_cpu(element->VolDevHandle),
6726                     le16_to_cpu(element->PhysDiskDevHandle),
6727                     element->PhysDiskNum);
6728         }
6729 }
6730
6731 /**
6732  * _scsih_sas_ir_config_change_event - handle ir configuration change events
6733  * @ioc: per adapter object
6734  * @fw_event: The fw_event_work object
6735  * Context: user.
6736  *
6737  * Return nothing.
6738  */
6739 static void
6740 _scsih_sas_ir_config_change_event(struct MPT3SAS_ADAPTER *ioc,
6741         struct fw_event_work *fw_event)
6742 {
6743         Mpi2EventIrConfigElement_t *element;
6744         int i;
6745         u8 foreign_config;
6746         Mpi2EventDataIrConfigChangeList_t *event_data =
6747                 (Mpi2EventDataIrConfigChangeList_t *)
6748                 fw_event->event_data;
6749
6750         if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
6751              (!ioc->hide_ir_msg))
6752                 _scsih_sas_ir_config_change_event_debug(ioc, event_data);
6753
6754         foreign_config = (le32_to_cpu(event_data->Flags) &
6755             MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ? 1 : 0;
6756
6757         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6758         if (ioc->shost_recovery &&
6759             ioc->hba_mpi_version_belonged != MPI2_VERSION) {
6760                 for (i = 0; i < event_data->NumElements; i++, element++) {
6761                         if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_HIDE)
6762                                 _scsih_ir_fastpath(ioc,
6763                                         le16_to_cpu(element->PhysDiskDevHandle),
6764                                         element->PhysDiskNum);
6765                 }
6766                 return;
6767         }
6768
6769         for (i = 0; i < event_data->NumElements; i++, element++) {
6770
6771                 switch (element->ReasonCode) {
6772                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6773                 case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6774                         if (!foreign_config)
6775                                 _scsih_sas_volume_add(ioc, element);
6776                         break;
6777                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6778                 case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6779                         if (!foreign_config)
6780                                 _scsih_sas_volume_delete(ioc,
6781                                     le16_to_cpu(element->VolDevHandle));
6782                         break;
6783                 case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6784                         if (!ioc->is_warpdrive)
6785                                 _scsih_sas_pd_hide(ioc, element);
6786                         break;
6787                 case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6788                         if (!ioc->is_warpdrive)
6789                                 _scsih_sas_pd_expose(ioc, element);
6790                         break;
6791                 case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6792                         if (!ioc->is_warpdrive)
6793                                 _scsih_sas_pd_add(ioc, element);
6794                         break;
6795                 case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6796                         if (!ioc->is_warpdrive)
6797                                 _scsih_sas_pd_delete(ioc, element);
6798                         break;
6799                 }
6800         }
6801 }
6802
6803 /**
6804  * _scsih_sas_ir_volume_event - IR volume event
6805  * @ioc: per adapter object
6806  * @fw_event: The fw_event_work object
6807  * Context: user.
6808  *
6809  * Return nothing.
6810  */
6811 static void
6812 _scsih_sas_ir_volume_event(struct MPT3SAS_ADAPTER *ioc,
6813         struct fw_event_work *fw_event)
6814 {
6815         u64 wwid;
6816         unsigned long flags;
6817         struct _raid_device *raid_device;
6818         u16 handle;
6819         u32 state;
6820         int rc;
6821         Mpi2EventDataIrVolume_t *event_data =
6822                 (Mpi2EventDataIrVolume_t *) fw_event->event_data;
6823
6824         if (ioc->shost_recovery)
6825                 return;
6826
6827         if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
6828                 return;
6829
6830         handle = le16_to_cpu(event_data->VolDevHandle);
6831         state = le32_to_cpu(event_data->NewValue);
6832         if (!ioc->hide_ir_msg)
6833                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6834                     "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6835                     ioc->name, __func__,  handle,
6836                     le32_to_cpu(event_data->PreviousValue), state));
6837         switch (state) {
6838         case MPI2_RAID_VOL_STATE_MISSING:
6839         case MPI2_RAID_VOL_STATE_FAILED:
6840                 _scsih_sas_volume_delete(ioc, handle);
6841                 break;
6842
6843         case MPI2_RAID_VOL_STATE_ONLINE:
6844         case MPI2_RAID_VOL_STATE_DEGRADED:
6845         case MPI2_RAID_VOL_STATE_OPTIMAL:
6846
6847                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
6848                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6849                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6850
6851                 if (raid_device)
6852                         break;
6853
6854                 mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6855                 if (!wwid) {
6856                         pr_err(MPT3SAS_FMT
6857                             "failure at %s:%d/%s()!\n", ioc->name,
6858                             __FILE__, __LINE__, __func__);
6859                         break;
6860                 }
6861
6862                 raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6863                 if (!raid_device) {
6864                         pr_err(MPT3SAS_FMT
6865                             "failure at %s:%d/%s()!\n", ioc->name,
6866                             __FILE__, __LINE__, __func__);
6867                         break;
6868                 }
6869
6870                 raid_device->id = ioc->sas_id++;
6871                 raid_device->channel = RAID_CHANNEL;
6872                 raid_device->handle = handle;
6873                 raid_device->wwid = wwid;
6874                 _scsih_raid_device_add(ioc, raid_device);
6875                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6876                     raid_device->id, 0);
6877                 if (rc)
6878                         _scsih_raid_device_remove(ioc, raid_device);
6879                 break;
6880
6881         case MPI2_RAID_VOL_STATE_INITIALIZING:
6882         default:
6883                 break;
6884         }
6885 }
6886
6887 /**
6888  * _scsih_sas_ir_physical_disk_event - PD event
6889  * @ioc: per adapter object
6890  * @fw_event: The fw_event_work object
6891  * Context: user.
6892  *
6893  * Return nothing.
6894  */
6895 static void
6896 _scsih_sas_ir_physical_disk_event(struct MPT3SAS_ADAPTER *ioc,
6897         struct fw_event_work *fw_event)
6898 {
6899         u16 handle, parent_handle;
6900         u32 state;
6901         struct _sas_device *sas_device;
6902         Mpi2ConfigReply_t mpi_reply;
6903         Mpi2SasDevicePage0_t sas_device_pg0;
6904         u32 ioc_status;
6905         Mpi2EventDataIrPhysicalDisk_t *event_data =
6906                 (Mpi2EventDataIrPhysicalDisk_t *) fw_event->event_data;
6907         u64 sas_address;
6908
6909         if (ioc->shost_recovery)
6910                 return;
6911
6912         if (event_data->ReasonCode != MPI2_EVENT_IR_PHYSDISK_RC_STATE_CHANGED)
6913                 return;
6914
6915         handle = le16_to_cpu(event_data->PhysDiskDevHandle);
6916         state = le32_to_cpu(event_data->NewValue);
6917
6918         if (!ioc->hide_ir_msg)
6919                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6920                     "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6921                     ioc->name, __func__,  handle,
6922                     le32_to_cpu(event_data->PreviousValue), state));
6923
6924         switch (state) {
6925         case MPI2_RAID_PD_STATE_ONLINE:
6926         case MPI2_RAID_PD_STATE_DEGRADED:
6927         case MPI2_RAID_PD_STATE_REBUILDING:
6928         case MPI2_RAID_PD_STATE_OPTIMAL:
6929         case MPI2_RAID_PD_STATE_HOT_SPARE:
6930
6931                 if (!ioc->is_warpdrive)
6932                         set_bit(handle, ioc->pd_handles);
6933
6934                 sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6935                 if (sas_device) {
6936                         sas_device_put(sas_device);
6937                         return;
6938                 }
6939
6940                 if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
6941                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
6942                     handle))) {
6943                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6944                             ioc->name, __FILE__, __LINE__, __func__);
6945                         return;
6946                 }
6947
6948                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6949                     MPI2_IOCSTATUS_MASK;
6950                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6951                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6952                             ioc->name, __FILE__, __LINE__, __func__);
6953                         return;
6954                 }
6955
6956                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6957                 if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6958                         mpt3sas_transport_update_links(ioc, sas_address, handle,
6959                             sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6960
6961                 _scsih_add_device(ioc, handle, 0, 1);
6962
6963                 break;
6964
6965         case MPI2_RAID_PD_STATE_OFFLINE:
6966         case MPI2_RAID_PD_STATE_NOT_CONFIGURED:
6967         case MPI2_RAID_PD_STATE_NOT_COMPATIBLE:
6968         default:
6969                 break;
6970         }
6971 }
6972
6973 /**
6974  * _scsih_sas_ir_operation_status_event_debug - debug for IR op event
6975  * @ioc: per adapter object
6976  * @event_data: event data payload
6977  * Context: user.
6978  *
6979  * Return nothing.
6980  */
6981 static void
6982 _scsih_sas_ir_operation_status_event_debug(struct MPT3SAS_ADAPTER *ioc,
6983         Mpi2EventDataIrOperationStatus_t *event_data)
6984 {
6985         char *reason_str = NULL;
6986
6987         switch (event_data->RAIDOperation) {
6988         case MPI2_EVENT_IR_RAIDOP_RESYNC:
6989                 reason_str = "resync";
6990                 break;
6991         case MPI2_EVENT_IR_RAIDOP_ONLINE_CAP_EXPANSION:
6992                 reason_str = "online capacity expansion";
6993                 break;
6994         case MPI2_EVENT_IR_RAIDOP_CONSISTENCY_CHECK:
6995                 reason_str = "consistency check";
6996                 break;
6997         case MPI2_EVENT_IR_RAIDOP_BACKGROUND_INIT:
6998                 reason_str = "background init";
6999                 break;
7000         case MPI2_EVENT_IR_RAIDOP_MAKE_DATA_CONSISTENT:
7001                 reason_str = "make data consistent";
7002                 break;
7003         }
7004
7005         if (!reason_str)
7006                 return;
7007
7008         pr_info(MPT3SAS_FMT "raid operational status: (%s)" \
7009             "\thandle(0x%04x), percent complete(%d)\n",
7010             ioc->name, reason_str,
7011             le16_to_cpu(event_data->VolDevHandle),
7012             event_data->PercentComplete);
7013 }
7014
7015 /**
7016  * _scsih_sas_ir_operation_status_event - handle RAID operation events
7017  * @ioc: per adapter object
7018  * @fw_event: The fw_event_work object
7019  * Context: user.
7020  *
7021  * Return nothing.
7022  */
7023 static void
7024 _scsih_sas_ir_operation_status_event(struct MPT3SAS_ADAPTER *ioc,
7025         struct fw_event_work *fw_event)
7026 {
7027         Mpi2EventDataIrOperationStatus_t *event_data =
7028                 (Mpi2EventDataIrOperationStatus_t *)
7029                 fw_event->event_data;
7030         static struct _raid_device *raid_device;
7031         unsigned long flags;
7032         u16 handle;
7033
7034         if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
7035             (!ioc->hide_ir_msg))
7036                 _scsih_sas_ir_operation_status_event_debug(ioc,
7037                      event_data);
7038
7039         /* code added for raid transport support */
7040         if (event_data->RAIDOperation == MPI2_EVENT_IR_RAIDOP_RESYNC) {
7041
7042                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
7043                 handle = le16_to_cpu(event_data->VolDevHandle);
7044                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
7045                 if (raid_device)
7046                         raid_device->percent_complete =
7047                             event_data->PercentComplete;
7048                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7049         }
7050 }
7051
7052 /**
7053  * _scsih_prep_device_scan - initialize parameters prior to device scan
7054  * @ioc: per adapter object
7055  *
7056  * Set the deleted flag prior to device scan.  If the device is found during
7057  * the scan, then we clear the deleted flag.
7058  */
7059 static void
7060 _scsih_prep_device_scan(struct MPT3SAS_ADAPTER *ioc)
7061 {
7062         struct MPT3SAS_DEVICE *sas_device_priv_data;
7063         struct scsi_device *sdev;
7064
7065         shost_for_each_device(sdev, ioc->shost) {
7066                 sas_device_priv_data = sdev->hostdata;
7067                 if (sas_device_priv_data && sas_device_priv_data->sas_target)
7068                         sas_device_priv_data->sas_target->deleted = 1;
7069         }
7070 }
7071
7072 /**
7073  * _scsih_mark_responding_sas_device - mark a sas_devices as responding
7074  * @ioc: per adapter object
7075  * @sas_device_pg0: SAS Device page 0
7076  *
7077  * After host reset, find out whether devices are still responding.
7078  * Used in _scsih_remove_unresponsive_sas_devices.
7079  *
7080  * Return nothing.
7081  */
7082 static void
7083 _scsih_mark_responding_sas_device(struct MPT3SAS_ADAPTER *ioc,
7084 Mpi2SasDevicePage0_t *sas_device_pg0)
7085 {
7086         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7087         struct scsi_target *starget;
7088         struct _sas_device *sas_device;
7089         unsigned long flags;
7090
7091         spin_lock_irqsave(&ioc->sas_device_lock, flags);
7092         list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
7093                 if ((sas_device->sas_address == sas_device_pg0->SASAddress) &&
7094                         (sas_device->slot == sas_device_pg0->Slot)) {
7095                         sas_device->responding = 1;
7096                         starget = sas_device->starget;
7097                         if (starget && starget->hostdata) {
7098                                 sas_target_priv_data = starget->hostdata;
7099                                 sas_target_priv_data->tm_busy = 0;
7100                                 sas_target_priv_data->deleted = 0;
7101                         } else
7102                                 sas_target_priv_data = NULL;
7103                         if (starget) {
7104                                 starget_printk(KERN_INFO, starget,
7105                                     "handle(0x%04x), sas_addr(0x%016llx)\n",
7106                                     sas_device_pg0->DevHandle,
7107                                     (unsigned long long)
7108                                     sas_device->sas_address);
7109
7110                                 if (sas_device->enclosure_handle != 0)
7111                                         starget_printk(KERN_INFO, starget,
7112                                          "enclosure logical id(0x%016llx),"
7113                                          " slot(%d)\n",
7114                                          (unsigned long long)
7115                                          sas_device->enclosure_logical_id,
7116                                          sas_device->slot);
7117                         }
7118                         if (sas_device_pg0->Flags &
7119                               MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
7120                                 sas_device->enclosure_level =
7121                                    sas_device_pg0->EnclosureLevel;
7122                                 memcpy(&sas_device->connector_name[0],
7123                                         &sas_device_pg0->ConnectorName[0], 4);
7124                         } else {
7125                                 sas_device->enclosure_level = 0;
7126                                 sas_device->connector_name[0] = '\0';
7127                         }
7128
7129                         if (sas_device->handle == sas_device_pg0->DevHandle)
7130                                 goto out;
7131                         pr_info("\thandle changed from(0x%04x)!!!\n",
7132                             sas_device->handle);
7133                         sas_device->handle = sas_device_pg0->DevHandle;
7134                         if (sas_target_priv_data)
7135                                 sas_target_priv_data->handle =
7136                                         sas_device_pg0->DevHandle;
7137                         goto out;
7138                 }
7139         }
7140  out:
7141         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7142 }
7143
7144 /**
7145  * _scsih_search_responding_sas_devices -
7146  * @ioc: per adapter object
7147  *
7148  * After host reset, find out whether devices are still responding.
7149  * If not remove.
7150  *
7151  * Return nothing.
7152  */
7153 static void
7154 _scsih_search_responding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7155 {
7156         Mpi2SasDevicePage0_t sas_device_pg0;
7157         Mpi2ConfigReply_t mpi_reply;
7158         u16 ioc_status;
7159         u16 handle;
7160         u32 device_info;
7161
7162         pr_info(MPT3SAS_FMT "search for end-devices: start\n", ioc->name);
7163
7164         if (list_empty(&ioc->sas_device_list))
7165                 goto out;
7166
7167         handle = 0xFFFF;
7168         while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7169             &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7170             handle))) {
7171                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7172                     MPI2_IOCSTATUS_MASK;
7173                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7174                         break;
7175                 handle = sas_device_pg0.DevHandle =
7176                                 le16_to_cpu(sas_device_pg0.DevHandle);
7177                 device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
7178                 if (!(_scsih_is_end_device(device_info)))
7179                         continue;
7180                 sas_device_pg0.SASAddress =
7181                                 le64_to_cpu(sas_device_pg0.SASAddress);
7182                 sas_device_pg0.Slot = le16_to_cpu(sas_device_pg0.Slot);
7183                 sas_device_pg0.Flags = le16_to_cpu(sas_device_pg0.Flags);
7184                 _scsih_mark_responding_sas_device(ioc, &sas_device_pg0);
7185         }
7186
7187  out:
7188         pr_info(MPT3SAS_FMT "search for end-devices: complete\n",
7189             ioc->name);
7190 }
7191
7192 /**
7193  * _scsih_mark_responding_raid_device - mark a raid_device as responding
7194  * @ioc: per adapter object
7195  * @wwid: world wide identifier for raid volume
7196  * @handle: device handle
7197  *
7198  * After host reset, find out whether devices are still responding.
7199  * Used in _scsih_remove_unresponsive_raid_devices.
7200  *
7201  * Return nothing.
7202  */
7203 static void
7204 _scsih_mark_responding_raid_device(struct MPT3SAS_ADAPTER *ioc, u64 wwid,
7205         u16 handle)
7206 {
7207         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7208         struct scsi_target *starget;
7209         struct _raid_device *raid_device;
7210         unsigned long flags;
7211
7212         spin_lock_irqsave(&ioc->raid_device_lock, flags);
7213         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
7214                 if (raid_device->wwid == wwid && raid_device->starget) {
7215                         starget = raid_device->starget;
7216                         if (starget && starget->hostdata) {
7217                                 sas_target_priv_data = starget->hostdata;
7218                                 sas_target_priv_data->deleted = 0;
7219                         } else
7220                                 sas_target_priv_data = NULL;
7221                         raid_device->responding = 1;
7222                         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7223                         starget_printk(KERN_INFO, raid_device->starget,
7224                             "handle(0x%04x), wwid(0x%016llx)\n", handle,
7225                             (unsigned long long)raid_device->wwid);
7226
7227                         /*
7228                          * WARPDRIVE: The handles of the PDs might have changed
7229                          * across the host reset so re-initialize the
7230                          * required data for Direct IO
7231                          */
7232                         mpt3sas_init_warpdrive_properties(ioc, raid_device);
7233                         spin_lock_irqsave(&ioc->raid_device_lock, flags);
7234                         if (raid_device->handle == handle) {
7235                                 spin_unlock_irqrestore(&ioc->raid_device_lock,
7236                                     flags);
7237                                 return;
7238                         }
7239                         pr_info("\thandle changed from(0x%04x)!!!\n",
7240                             raid_device->handle);
7241                         raid_device->handle = handle;
7242                         if (sas_target_priv_data)
7243                                 sas_target_priv_data->handle = handle;
7244                         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7245                         return;
7246                 }
7247         }
7248         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7249 }
7250
7251 /**
7252  * _scsih_search_responding_raid_devices -
7253  * @ioc: per adapter object
7254  *
7255  * After host reset, find out whether devices are still responding.
7256  * If not remove.
7257  *
7258  * Return nothing.
7259  */
7260 static void
7261 _scsih_search_responding_raid_devices(struct MPT3SAS_ADAPTER *ioc)
7262 {
7263         Mpi2RaidVolPage1_t volume_pg1;
7264         Mpi2RaidVolPage0_t volume_pg0;
7265         Mpi2RaidPhysDiskPage0_t pd_pg0;
7266         Mpi2ConfigReply_t mpi_reply;
7267         u16 ioc_status;
7268         u16 handle;
7269         u8 phys_disk_num;
7270
7271         if (!ioc->ir_firmware)
7272                 return;
7273
7274         pr_info(MPT3SAS_FMT "search for raid volumes: start\n",
7275             ioc->name);
7276
7277         if (list_empty(&ioc->raid_device_list))
7278                 goto out;
7279
7280         handle = 0xFFFF;
7281         while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7282             &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7283                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7284                     MPI2_IOCSTATUS_MASK;
7285                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7286                         break;
7287                 handle = le16_to_cpu(volume_pg1.DevHandle);
7288
7289                 if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7290                     &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7291                      sizeof(Mpi2RaidVolPage0_t)))
7292                         continue;
7293
7294                 if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7295                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7296                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED)
7297                         _scsih_mark_responding_raid_device(ioc,
7298                             le64_to_cpu(volume_pg1.WWID), handle);
7299         }
7300
7301         /* refresh the pd_handles */
7302         if (!ioc->is_warpdrive) {
7303                 phys_disk_num = 0xFF;
7304                 memset(ioc->pd_handles, 0, ioc->pd_handles_sz);
7305                 while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7306                     &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7307                     phys_disk_num))) {
7308                         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7309                             MPI2_IOCSTATUS_MASK;
7310                         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7311                                 break;
7312                         phys_disk_num = pd_pg0.PhysDiskNum;
7313                         handle = le16_to_cpu(pd_pg0.DevHandle);
7314                         set_bit(handle, ioc->pd_handles);
7315                 }
7316         }
7317  out:
7318         pr_info(MPT3SAS_FMT "search for responding raid volumes: complete\n",
7319                 ioc->name);
7320 }
7321
7322 /**
7323  * _scsih_mark_responding_expander - mark a expander as responding
7324  * @ioc: per adapter object
7325  * @sas_address: sas address
7326  * @handle:
7327  *
7328  * After host reset, find out whether devices are still responding.
7329  * Used in _scsih_remove_unresponsive_expanders.
7330  *
7331  * Return nothing.
7332  */
7333 static void
7334 _scsih_mark_responding_expander(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
7335         u16 handle)
7336 {
7337         struct _sas_node *sas_expander;
7338         unsigned long flags;
7339         int i;
7340
7341         spin_lock_irqsave(&ioc->sas_node_lock, flags);
7342         list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
7343                 if (sas_expander->sas_address != sas_address)
7344                         continue;
7345                 sas_expander->responding = 1;
7346                 if (sas_expander->handle == handle)
7347                         goto out;
7348                 pr_info("\texpander(0x%016llx): handle changed" \
7349                     " from(0x%04x) to (0x%04x)!!!\n",
7350                     (unsigned long long)sas_expander->sas_address,
7351                     sas_expander->handle, handle);
7352                 sas_expander->handle = handle;
7353                 for (i = 0 ; i < sas_expander->num_phys ; i++)
7354                         sas_expander->phy[i].handle = handle;
7355                 goto out;
7356         }
7357  out:
7358         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7359 }
7360
7361 /**
7362  * _scsih_search_responding_expanders -
7363  * @ioc: per adapter object
7364  *
7365  * After host reset, find out whether devices are still responding.
7366  * If not remove.
7367  *
7368  * Return nothing.
7369  */
7370 static void
7371 _scsih_search_responding_expanders(struct MPT3SAS_ADAPTER *ioc)
7372 {
7373         Mpi2ExpanderPage0_t expander_pg0;
7374         Mpi2ConfigReply_t mpi_reply;
7375         u16 ioc_status;
7376         u64 sas_address;
7377         u16 handle;
7378
7379         pr_info(MPT3SAS_FMT "search for expanders: start\n", ioc->name);
7380
7381         if (list_empty(&ioc->sas_expander_list))
7382                 goto out;
7383
7384         handle = 0xFFFF;
7385         while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7386             MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7387
7388                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7389                     MPI2_IOCSTATUS_MASK;
7390                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7391                         break;
7392
7393                 handle = le16_to_cpu(expander_pg0.DevHandle);
7394                 sas_address = le64_to_cpu(expander_pg0.SASAddress);
7395                 pr_info("\texpander present: handle(0x%04x), sas_addr(0x%016llx)\n",
7396                         handle,
7397                     (unsigned long long)sas_address);
7398                 _scsih_mark_responding_expander(ioc, sas_address, handle);
7399         }
7400
7401  out:
7402         pr_info(MPT3SAS_FMT "search for expanders: complete\n", ioc->name);
7403 }
7404
7405 /**
7406  * _scsih_remove_unresponding_sas_devices - removing unresponding devices
7407  * @ioc: per adapter object
7408  *
7409  * Return nothing.
7410  */
7411 static void
7412 _scsih_remove_unresponding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7413 {
7414         struct _sas_device *sas_device, *sas_device_next;
7415         struct _sas_node *sas_expander, *sas_expander_next;
7416         struct _raid_device *raid_device, *raid_device_next;
7417         struct list_head tmp_list;
7418         unsigned long flags;
7419         LIST_HEAD(head);
7420
7421         pr_info(MPT3SAS_FMT "removing unresponding devices: start\n",
7422             ioc->name);
7423
7424         /* removing unresponding end devices */
7425         pr_info(MPT3SAS_FMT "removing unresponding devices: end-devices\n",
7426             ioc->name);
7427         /*
7428          * Iterate, pulling off devices marked as non-responding. We become the
7429          * owner for the reference the list had on any object we prune.
7430          */
7431         spin_lock_irqsave(&ioc->sas_device_lock, flags);
7432         list_for_each_entry_safe(sas_device, sas_device_next,
7433             &ioc->sas_device_list, list) {
7434                 if (!sas_device->responding)
7435                         list_move_tail(&sas_device->list, &head);
7436                 else
7437                         sas_device->responding = 0;
7438         }
7439         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7440
7441         /*
7442          * Now, uninitialize and remove the unresponding devices we pruned.
7443          */
7444         list_for_each_entry_safe(sas_device, sas_device_next, &head, list) {
7445                 _scsih_remove_device(ioc, sas_device);
7446                 list_del_init(&sas_device->list);
7447                 sas_device_put(sas_device);
7448         }
7449
7450         /* removing unresponding volumes */
7451         if (ioc->ir_firmware) {
7452                 pr_info(MPT3SAS_FMT "removing unresponding devices: volumes\n",
7453                         ioc->name);
7454                 list_for_each_entry_safe(raid_device, raid_device_next,
7455                     &ioc->raid_device_list, list) {
7456                         if (!raid_device->responding)
7457                                 _scsih_sas_volume_delete(ioc,
7458                                     raid_device->handle);
7459                         else
7460                                 raid_device->responding = 0;
7461                 }
7462         }
7463
7464         /* removing unresponding expanders */
7465         pr_info(MPT3SAS_FMT "removing unresponding devices: expanders\n",
7466             ioc->name);
7467         spin_lock_irqsave(&ioc->sas_node_lock, flags);
7468         INIT_LIST_HEAD(&tmp_list);
7469         list_for_each_entry_safe(sas_expander, sas_expander_next,
7470             &ioc->sas_expander_list, list) {
7471                 if (!sas_expander->responding)
7472                         list_move_tail(&sas_expander->list, &tmp_list);
7473                 else
7474                         sas_expander->responding = 0;
7475         }
7476         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7477         list_for_each_entry_safe(sas_expander, sas_expander_next, &tmp_list,
7478             list) {
7479                 list_del(&sas_expander->list);
7480                 _scsih_expander_node_remove(ioc, sas_expander);
7481         }
7482
7483         pr_info(MPT3SAS_FMT "removing unresponding devices: complete\n",
7484             ioc->name);
7485
7486         /* unblock devices */
7487         _scsih_ublock_io_all_device(ioc);
7488 }
7489
7490 static void
7491 _scsih_refresh_expander_links(struct MPT3SAS_ADAPTER *ioc,
7492         struct _sas_node *sas_expander, u16 handle)
7493 {
7494         Mpi2ExpanderPage1_t expander_pg1;
7495         Mpi2ConfigReply_t mpi_reply;
7496         int i;
7497
7498         for (i = 0 ; i < sas_expander->num_phys ; i++) {
7499                 if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
7500                     &expander_pg1, i, handle))) {
7501                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
7502                             ioc->name, __FILE__, __LINE__, __func__);
7503                         return;
7504                 }
7505
7506                 mpt3sas_transport_update_links(ioc, sas_expander->sas_address,
7507                     le16_to_cpu(expander_pg1.AttachedDevHandle), i,
7508                     expander_pg1.NegotiatedLinkRate >> 4);
7509         }
7510 }
7511
7512 /**
7513  * _scsih_scan_for_devices_after_reset - scan for devices after host reset
7514  * @ioc: per adapter object
7515  *
7516  * Return nothing.
7517  */
7518 static void
7519 _scsih_scan_for_devices_after_reset(struct MPT3SAS_ADAPTER *ioc)
7520 {
7521         Mpi2ExpanderPage0_t expander_pg0;
7522         Mpi2SasDevicePage0_t sas_device_pg0;
7523         Mpi2RaidVolPage1_t volume_pg1;
7524         Mpi2RaidVolPage0_t volume_pg0;
7525         Mpi2RaidPhysDiskPage0_t pd_pg0;
7526         Mpi2EventIrConfigElement_t element;
7527         Mpi2ConfigReply_t mpi_reply;
7528         u8 phys_disk_num;
7529         u16 ioc_status;
7530         u16 handle, parent_handle;
7531         u64 sas_address;
7532         struct _sas_device *sas_device;
7533         struct _sas_node *expander_device;
7534         static struct _raid_device *raid_device;
7535         u8 retry_count;
7536         unsigned long flags;
7537
7538         pr_info(MPT3SAS_FMT "scan devices: start\n", ioc->name);
7539
7540         _scsih_sas_host_refresh(ioc);
7541
7542         pr_info(MPT3SAS_FMT "\tscan devices: expanders start\n", ioc->name);
7543
7544         /* expanders */
7545         handle = 0xFFFF;
7546         while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7547             MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7548                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7549                     MPI2_IOCSTATUS_MASK;
7550                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7551                         pr_info(MPT3SAS_FMT "\tbreak from expander scan: " \
7552                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7553                             ioc->name, ioc_status,
7554                             le32_to_cpu(mpi_reply.IOCLogInfo));
7555                         break;
7556                 }
7557                 handle = le16_to_cpu(expander_pg0.DevHandle);
7558                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
7559                 expander_device = mpt3sas_scsih_expander_find_by_sas_address(
7560                     ioc, le64_to_cpu(expander_pg0.SASAddress));
7561                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7562                 if (expander_device)
7563                         _scsih_refresh_expander_links(ioc, expander_device,
7564                             handle);
7565                 else {
7566                         pr_info(MPT3SAS_FMT "\tBEFORE adding expander: " \
7567                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7568                             handle, (unsigned long long)
7569                             le64_to_cpu(expander_pg0.SASAddress));
7570                         _scsih_expander_add(ioc, handle);
7571                         pr_info(MPT3SAS_FMT "\tAFTER adding expander: " \
7572                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7573                             handle, (unsigned long long)
7574                             le64_to_cpu(expander_pg0.SASAddress));
7575                 }
7576         }
7577
7578         pr_info(MPT3SAS_FMT "\tscan devices: expanders complete\n",
7579             ioc->name);
7580
7581         if (!ioc->ir_firmware)
7582                 goto skip_to_sas;
7583
7584         pr_info(MPT3SAS_FMT "\tscan devices: phys disk start\n", ioc->name);
7585
7586         /* phys disk */
7587         phys_disk_num = 0xFF;
7588         while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7589             &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7590             phys_disk_num))) {
7591                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7592                     MPI2_IOCSTATUS_MASK;
7593                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7594                         pr_info(MPT3SAS_FMT "\tbreak from phys disk scan: "\
7595                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7596                             ioc->name, ioc_status,
7597                             le32_to_cpu(mpi_reply.IOCLogInfo));
7598                         break;
7599                 }
7600                 phys_disk_num = pd_pg0.PhysDiskNum;
7601                 handle = le16_to_cpu(pd_pg0.DevHandle);
7602                 sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
7603                 if (sas_device) {
7604                         sas_device_put(sas_device);
7605                         continue;
7606                 }
7607                 if (mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7608                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
7609                     handle) != 0)
7610                         continue;
7611                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7612                     MPI2_IOCSTATUS_MASK;
7613                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7614                         pr_info(MPT3SAS_FMT "\tbreak from phys disk scan " \
7615                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7616                             ioc->name, ioc_status,
7617                             le32_to_cpu(mpi_reply.IOCLogInfo));
7618                         break;
7619                 }
7620                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7621                 if (!_scsih_get_sas_address(ioc, parent_handle,
7622                     &sas_address)) {
7623                         pr_info(MPT3SAS_FMT "\tBEFORE adding phys disk: " \
7624                             " handle (0x%04x), sas_addr(0x%016llx)\n",
7625                             ioc->name, handle, (unsigned long long)
7626                             le64_to_cpu(sas_device_pg0.SASAddress));
7627                         mpt3sas_transport_update_links(ioc, sas_address,
7628                             handle, sas_device_pg0.PhyNum,
7629                             MPI2_SAS_NEG_LINK_RATE_1_5);
7630                         set_bit(handle, ioc->pd_handles);
7631                         retry_count = 0;
7632                         /* This will retry adding the end device.
7633                          * _scsih_add_device() will decide on retries and
7634                          * return "1" when it should be retried
7635                          */
7636                         while (_scsih_add_device(ioc, handle, retry_count++,
7637                             1)) {
7638                                 ssleep(1);
7639                         }
7640                         pr_info(MPT3SAS_FMT "\tAFTER adding phys disk: " \
7641                             " handle (0x%04x), sas_addr(0x%016llx)\n",
7642                             ioc->name, handle, (unsigned long long)
7643                             le64_to_cpu(sas_device_pg0.SASAddress));
7644                 }
7645         }
7646
7647         pr_info(MPT3SAS_FMT "\tscan devices: phys disk complete\n",
7648             ioc->name);
7649
7650         pr_info(MPT3SAS_FMT "\tscan devices: volumes start\n", ioc->name);
7651
7652         /* volumes */
7653         handle = 0xFFFF;
7654         while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7655             &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7656                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7657                     MPI2_IOCSTATUS_MASK;
7658                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7659                         pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7660                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7661                             ioc->name, ioc_status,
7662                             le32_to_cpu(mpi_reply.IOCLogInfo));
7663                         break;
7664                 }
7665                 handle = le16_to_cpu(volume_pg1.DevHandle);
7666                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
7667                 raid_device = _scsih_raid_device_find_by_wwid(ioc,
7668                     le64_to_cpu(volume_pg1.WWID));
7669                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7670                 if (raid_device)
7671                         continue;
7672                 if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7673                     &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7674                      sizeof(Mpi2RaidVolPage0_t)))
7675                         continue;
7676                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7677                     MPI2_IOCSTATUS_MASK;
7678                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7679                         pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7680                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7681                             ioc->name, ioc_status,
7682                             le32_to_cpu(mpi_reply.IOCLogInfo));
7683                         break;
7684                 }
7685                 if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7686                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7687                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED) {
7688                         memset(&element, 0, sizeof(Mpi2EventIrConfigElement_t));
7689                         element.ReasonCode = MPI2_EVENT_IR_CHANGE_RC_ADDED;
7690                         element.VolDevHandle = volume_pg1.DevHandle;
7691                         pr_info(MPT3SAS_FMT
7692                                 "\tBEFORE adding volume: handle (0x%04x)\n",
7693                                 ioc->name, volume_pg1.DevHandle);
7694                         _scsih_sas_volume_add(ioc, &element);
7695                         pr_info(MPT3SAS_FMT
7696                                 "\tAFTER adding volume: handle (0x%04x)\n",
7697                                 ioc->name, volume_pg1.DevHandle);
7698                 }
7699         }
7700
7701         pr_info(MPT3SAS_FMT "\tscan devices: volumes complete\n",
7702             ioc->name);
7703
7704  skip_to_sas:
7705
7706         pr_info(MPT3SAS_FMT "\tscan devices: end devices start\n",
7707             ioc->name);
7708
7709         /* sas devices */
7710         handle = 0xFFFF;
7711         while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7712             &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7713             handle))) {
7714                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7715                     MPI2_IOCSTATUS_MASK;
7716                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7717                         pr_info(MPT3SAS_FMT "\tbreak from end device scan:"\
7718                             " ioc_status(0x%04x), loginfo(0x%08x)\n",
7719                             ioc->name, ioc_status,
7720                             le32_to_cpu(mpi_reply.IOCLogInfo));
7721                         break;
7722                 }
7723                 handle = le16_to_cpu(sas_device_pg0.DevHandle);
7724                 if (!(_scsih_is_end_device(
7725                     le32_to_cpu(sas_device_pg0.DeviceInfo))))
7726                         continue;
7727                 sas_device = mpt3sas_get_sdev_by_addr(ioc,
7728                     le64_to_cpu(sas_device_pg0.SASAddress));
7729                 if (sas_device) {
7730                         sas_device_put(sas_device);
7731                         continue;
7732                 }
7733                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7734                 if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address)) {
7735                         pr_info(MPT3SAS_FMT "\tBEFORE adding end device: " \
7736                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7737                             handle, (unsigned long long)
7738                             le64_to_cpu(sas_device_pg0.SASAddress));
7739                         mpt3sas_transport_update_links(ioc, sas_address, handle,
7740                             sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
7741                         retry_count = 0;
7742                         /* This will retry adding the end device.
7743                          * _scsih_add_device() will decide on retries and
7744                          * return "1" when it should be retried
7745                          */
7746                         while (_scsih_add_device(ioc, handle, retry_count++,
7747                             0)) {
7748                                 ssleep(1);
7749                         }
7750                         pr_info(MPT3SAS_FMT "\tAFTER adding end device: " \
7751                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7752                             handle, (unsigned long long)
7753                             le64_to_cpu(sas_device_pg0.SASAddress));
7754                 }
7755         }
7756         pr_info(MPT3SAS_FMT "\tscan devices: end devices complete\n",
7757             ioc->name);
7758
7759         pr_info(MPT3SAS_FMT "scan devices: complete\n", ioc->name);
7760 }
7761 /**
7762  * mpt3sas_scsih_reset_handler - reset callback handler (for scsih)
7763  * @ioc: per adapter object
7764  * @reset_phase: phase
7765  *
7766  * The handler for doing any required cleanup or initialization.
7767  *
7768  * The reset phase can be MPT3_IOC_PRE_RESET, MPT3_IOC_AFTER_RESET,
7769  * MPT3_IOC_DONE_RESET
7770  *
7771  * Return nothing.
7772  */
7773 void
7774 mpt3sas_scsih_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
7775 {
7776         switch (reset_phase) {
7777         case MPT3_IOC_PRE_RESET:
7778                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7779                         "%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
7780                 break;
7781         case MPT3_IOC_AFTER_RESET:
7782                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7783                         "%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
7784                 if (ioc->scsih_cmds.status & MPT3_CMD_PENDING) {
7785                         ioc->scsih_cmds.status |= MPT3_CMD_RESET;
7786                         mpt3sas_base_free_smid(ioc, ioc->scsih_cmds.smid);
7787                         complete(&ioc->scsih_cmds.done);
7788                 }
7789                 if (ioc->tm_cmds.status & MPT3_CMD_PENDING) {
7790                         ioc->tm_cmds.status |= MPT3_CMD_RESET;
7791                         mpt3sas_base_free_smid(ioc, ioc->tm_cmds.smid);
7792                         complete(&ioc->tm_cmds.done);
7793                 }
7794
7795                 memset(ioc->pend_os_device_add, 0, ioc->pend_os_device_add_sz);
7796                 memset(ioc->device_remove_in_progress, 0,
7797                        ioc->device_remove_in_progress_sz);
7798                 _scsih_fw_event_cleanup_queue(ioc);
7799                 _scsih_flush_running_cmds(ioc);
7800                 break;
7801         case MPT3_IOC_DONE_RESET:
7802                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7803                         "%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));
7804                 if ((!ioc->is_driver_loading) && !(disable_discovery > 0 &&
7805                     !ioc->sas_hba.num_phys)) {
7806                         _scsih_prep_device_scan(ioc);
7807                         _scsih_search_responding_sas_devices(ioc);
7808                         _scsih_search_responding_raid_devices(ioc);
7809                         _scsih_search_responding_expanders(ioc);
7810                         _scsih_error_recovery_delete_devices(ioc);
7811                 }
7812                 break;
7813         }
7814 }
7815
7816 /**
7817  * _mpt3sas_fw_work - delayed task for processing firmware events
7818  * @ioc: per adapter object
7819  * @fw_event: The fw_event_work object
7820  * Context: user.
7821  *
7822  * Return nothing.
7823  */
7824 static void
7825 _mpt3sas_fw_work(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
7826 {
7827         _scsih_fw_event_del_from_list(ioc, fw_event);
7828
7829         /* the queue is being flushed so ignore this event */
7830         if (ioc->remove_host || ioc->pci_error_recovery) {
7831                 fw_event_work_put(fw_event);
7832                 return;
7833         }
7834
7835         switch (fw_event->event) {
7836         case MPT3SAS_PROCESS_TRIGGER_DIAG:
7837                 mpt3sas_process_trigger_data(ioc,
7838                         (struct SL_WH_TRIGGERS_EVENT_DATA_T *)
7839                         fw_event->event_data);
7840                 break;
7841         case MPT3SAS_REMOVE_UNRESPONDING_DEVICES:
7842                 while (scsi_host_in_recovery(ioc->shost) ||
7843                                          ioc->shost_recovery) {
7844                         /*
7845                          * If we're unloading, bail. Otherwise, this can become
7846                          * an infinite loop.
7847                          */
7848                         if (ioc->remove_host)
7849                                 goto out;
7850                         ssleep(1);
7851                 }
7852                 _scsih_remove_unresponding_sas_devices(ioc);
7853                 _scsih_scan_for_devices_after_reset(ioc);
7854                 break;
7855         case MPT3SAS_PORT_ENABLE_COMPLETE:
7856                 ioc->start_scan = 0;
7857         if (missing_delay[0] != -1 && missing_delay[1] != -1)
7858                         mpt3sas_base_update_missing_delay(ioc, missing_delay[0],
7859                             missing_delay[1]);
7860                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
7861                         "port enable: complete from worker thread\n",
7862                         ioc->name));
7863                 break;
7864         case MPT3SAS_TURN_ON_PFA_LED:
7865                 _scsih_turn_on_pfa_led(ioc, fw_event->device_handle);
7866                 break;
7867         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7868                 _scsih_sas_topology_change_event(ioc, fw_event);
7869                 break;
7870         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
7871                 _scsih_sas_device_status_change_event(ioc, fw_event);
7872                 break;
7873         case MPI2_EVENT_SAS_DISCOVERY:
7874                 _scsih_sas_discovery_event(ioc, fw_event);
7875                 break;
7876         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7877                 _scsih_sas_broadcast_primitive_event(ioc, fw_event);
7878                 break;
7879         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
7880                 _scsih_sas_enclosure_dev_status_change_event(ioc,
7881                     fw_event);
7882                 break;
7883         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7884                 _scsih_sas_ir_config_change_event(ioc, fw_event);
7885                 break;
7886         case MPI2_EVENT_IR_VOLUME:
7887                 _scsih_sas_ir_volume_event(ioc, fw_event);
7888                 break;
7889         case MPI2_EVENT_IR_PHYSICAL_DISK:
7890                 _scsih_sas_ir_physical_disk_event(ioc, fw_event);
7891                 break;
7892         case MPI2_EVENT_IR_OPERATION_STATUS:
7893                 _scsih_sas_ir_operation_status_event(ioc, fw_event);
7894                 break;
7895         }
7896 out:
7897         fw_event_work_put(fw_event);
7898 }
7899
7900 /**
7901  * _firmware_event_work
7902  * @ioc: per adapter object
7903  * @work: The fw_event_work object
7904  * Context: user.
7905  *
7906  * wrappers for the work thread handling firmware events
7907  *
7908  * Return nothing.
7909  */
7910
7911 static void
7912 _firmware_event_work(struct work_struct *work)
7913 {
7914         struct fw_event_work *fw_event = container_of(work,
7915             struct fw_event_work, work);
7916
7917         _mpt3sas_fw_work(fw_event->ioc, fw_event);
7918 }
7919
7920 /**
7921  * mpt3sas_scsih_event_callback - firmware event handler (called at ISR time)
7922  * @ioc: per adapter object
7923  * @msix_index: MSIX table index supplied by the OS
7924  * @reply: reply message frame(lower 32bit addr)
7925  * Context: interrupt.
7926  *
7927  * This function merely adds a new work task into ioc->firmware_event_thread.
7928  * The tasks are worked from _firmware_event_work in user context.
7929  *
7930  * Return 1 meaning mf should be freed from _base_interrupt
7931  *        0 means the mf is freed from this function.
7932  */
7933 u8
7934 mpt3sas_scsih_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
7935         u32 reply)
7936 {
7937         struct fw_event_work *fw_event;
7938         Mpi2EventNotificationReply_t *mpi_reply;
7939         u16 event;
7940         u16 sz;
7941         Mpi26EventDataActiveCableExcept_t *ActiveCableEventData;
7942
7943         /* events turned off due to host reset or driver unloading */
7944         if (ioc->remove_host || ioc->pci_error_recovery)
7945                 return 1;
7946
7947         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
7948
7949         if (unlikely(!mpi_reply)) {
7950                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
7951                     ioc->name, __FILE__, __LINE__, __func__);
7952                 return 1;
7953         }
7954
7955         event = le16_to_cpu(mpi_reply->Event);
7956
7957         if (event != MPI2_EVENT_LOG_ENTRY_ADDED)
7958                 mpt3sas_trigger_event(ioc, event, 0);
7959
7960         switch (event) {
7961         /* handle these */
7962         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7963         {
7964                 Mpi2EventDataSasBroadcastPrimitive_t *baen_data =
7965                     (Mpi2EventDataSasBroadcastPrimitive_t *)
7966                     mpi_reply->EventData;
7967
7968                 if (baen_data->Primitive !=
7969                     MPI2_EVENT_PRIMITIVE_ASYNCHRONOUS_EVENT)
7970                         return 1;
7971
7972                 if (ioc->broadcast_aen_busy) {
7973                         ioc->broadcast_aen_pending++;
7974                         return 1;
7975                 } else
7976                         ioc->broadcast_aen_busy = 1;
7977                 break;
7978         }
7979
7980         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7981                 _scsih_check_topo_delete_events(ioc,
7982                     (Mpi2EventDataSasTopologyChangeList_t *)
7983                     mpi_reply->EventData);
7984                 break;
7985         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7986                 _scsih_check_ir_config_unhide_events(ioc,
7987                     (Mpi2EventDataIrConfigChangeList_t *)
7988                     mpi_reply->EventData);
7989                 break;
7990         case MPI2_EVENT_IR_VOLUME:
7991                 _scsih_check_volume_delete_events(ioc,
7992                     (Mpi2EventDataIrVolume_t *)
7993                     mpi_reply->EventData);
7994                 break;
7995         case MPI2_EVENT_LOG_ENTRY_ADDED:
7996         {
7997                 Mpi2EventDataLogEntryAdded_t *log_entry;
7998                 u32 *log_code;
7999
8000                 if (!ioc->is_warpdrive)
8001                         break;
8002
8003                 log_entry = (Mpi2EventDataLogEntryAdded_t *)
8004                     mpi_reply->EventData;
8005                 log_code = (u32 *)log_entry->LogData;
8006
8007                 if (le16_to_cpu(log_entry->LogEntryQualifier)
8008                     != MPT2_WARPDRIVE_LOGENTRY)
8009                         break;
8010
8011                 switch (le32_to_cpu(*log_code)) {
8012                 case MPT2_WARPDRIVE_LC_SSDT:
8013                         pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
8014                             "IO Throttling has occurred in the WarpDrive "
8015                             "subsystem. Check WarpDrive documentation for "
8016                             "additional details.\n", ioc->name);
8017                         break;
8018                 case MPT2_WARPDRIVE_LC_SSDLW:
8019                         pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
8020                             "Program/Erase Cycles for the WarpDrive subsystem "
8021                             "in degraded range. Check WarpDrive documentation "
8022                             "for additional details.\n", ioc->name);
8023                         break;
8024                 case MPT2_WARPDRIVE_LC_SSDLF:
8025                         pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
8026                             "There are no Program/Erase Cycles for the "
8027                             "WarpDrive subsystem. The storage device will be "
8028                             "in read-only mode. Check WarpDrive documentation "
8029                             "for additional details.\n", ioc->name);
8030                         break;
8031                 case MPT2_WARPDRIVE_LC_BRMF:
8032                         pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
8033                             "The Backup Rail Monitor has failed on the "
8034                             "WarpDrive subsystem. Check WarpDrive "
8035                             "documentation for additional details.\n",
8036                             ioc->name);
8037                         break;
8038                 }
8039
8040                 break;
8041         }
8042         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
8043         case MPI2_EVENT_IR_OPERATION_STATUS:
8044         case MPI2_EVENT_SAS_DISCOVERY:
8045         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
8046         case MPI2_EVENT_IR_PHYSICAL_DISK:
8047                 break;
8048
8049         case MPI2_EVENT_TEMP_THRESHOLD:
8050                 _scsih_temp_threshold_events(ioc,
8051                         (Mpi2EventDataTemperature_t *)
8052                         mpi_reply->EventData);
8053                 break;
8054         case MPI2_EVENT_ACTIVE_CABLE_EXCEPTION:
8055                 ActiveCableEventData =
8056                     (Mpi26EventDataActiveCableExcept_t *) mpi_reply->EventData;
8057                 switch (ActiveCableEventData->ReasonCode) {
8058                 case MPI26_EVENT_ACTIVE_CABLE_INSUFFICIENT_POWER:
8059                         pr_notice(MPT3SAS_FMT "Receptacle ID %d: This active cable"
8060                                   " requires %d mW of power\n", ioc->name,
8061                              ActiveCableEventData->ReceptacleID,
8062                              ActiveCableEventData->ActiveCablePowerRequirement);
8063                         pr_notice(MPT3SAS_FMT "Receptacle ID %d: Devices connected"
8064                                   " to this active cable will not be seen\n",
8065                              ioc->name, ActiveCableEventData->ReceptacleID);
8066                         break;
8067
8068                 case MPI26_EVENT_ACTIVE_CABLE_DEGRADED:
8069                         pr_notice(MPT3SAS_FMT "ReceptacleID %d: This cable",
8070                                 ioc->name, ActiveCableEventData->ReceptacleID);
8071                         pr_notice(" is not running at an optimal speed(12 Gb/s)\n");
8072                         break;
8073                 }
8074
8075                 break;
8076
8077         default: /* ignore the rest */
8078                 return 1;
8079         }
8080
8081         sz = le16_to_cpu(mpi_reply->EventDataLength) * 4;
8082         fw_event = alloc_fw_event_work(sz);
8083         if (!fw_event) {
8084                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8085                     ioc->name, __FILE__, __LINE__, __func__);
8086                 return 1;
8087         }
8088
8089         memcpy(fw_event->event_data, mpi_reply->EventData, sz);
8090         fw_event->ioc = ioc;
8091         fw_event->VF_ID = mpi_reply->VF_ID;
8092         fw_event->VP_ID = mpi_reply->VP_ID;
8093         fw_event->event = event;
8094         _scsih_fw_event_add(ioc, fw_event);
8095         fw_event_work_put(fw_event);
8096         return 1;
8097 }
8098
8099 /**
8100  * _scsih_expander_node_remove - removing expander device from list.
8101  * @ioc: per adapter object
8102  * @sas_expander: the sas_device object
8103  * Context: Calling function should acquire ioc->sas_node_lock.
8104  *
8105  * Removing object and freeing associated memory from the
8106  * ioc->sas_expander_list.
8107  *
8108  * Return nothing.
8109  */
8110 static void
8111 _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
8112         struct _sas_node *sas_expander)
8113 {
8114         struct _sas_port *mpt3sas_port, *next;
8115
8116         /* remove sibling ports attached to this expander */
8117         list_for_each_entry_safe(mpt3sas_port, next,
8118            &sas_expander->sas_port_list, port_list) {
8119                 if (ioc->shost_recovery)
8120                         return;
8121                 if (mpt3sas_port->remote_identify.device_type ==
8122                     SAS_END_DEVICE)
8123                         mpt3sas_device_remove_by_sas_address(ioc,
8124                             mpt3sas_port->remote_identify.sas_address);
8125                 else if (mpt3sas_port->remote_identify.device_type ==
8126                     SAS_EDGE_EXPANDER_DEVICE ||
8127                     mpt3sas_port->remote_identify.device_type ==
8128                     SAS_FANOUT_EXPANDER_DEVICE)
8129                         mpt3sas_expander_remove(ioc,
8130                             mpt3sas_port->remote_identify.sas_address);
8131         }
8132
8133         mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
8134             sas_expander->sas_address_parent);
8135
8136         pr_info(MPT3SAS_FMT
8137                 "expander_remove: handle(0x%04x), sas_addr(0x%016llx)\n",
8138                 ioc->name,
8139             sas_expander->handle, (unsigned long long)
8140             sas_expander->sas_address);
8141
8142         kfree(sas_expander->phy);
8143         kfree(sas_expander);
8144 }
8145
8146 /**
8147  * _scsih_ir_shutdown - IR shutdown notification
8148  * @ioc: per adapter object
8149  *
8150  * Sending RAID Action to alert the Integrated RAID subsystem of the IOC that
8151  * the host system is shutting down.
8152  *
8153  * Return nothing.
8154  */
8155 static void
8156 _scsih_ir_shutdown(struct MPT3SAS_ADAPTER *ioc)
8157 {
8158         Mpi2RaidActionRequest_t *mpi_request;
8159         Mpi2RaidActionReply_t *mpi_reply;
8160         u16 smid;
8161
8162         /* is IR firmware build loaded ? */
8163         if (!ioc->ir_firmware)
8164                 return;
8165
8166         /* are there any volumes ? */
8167         if (list_empty(&ioc->raid_device_list))
8168                 return;
8169
8170         mutex_lock(&ioc->scsih_cmds.mutex);
8171
8172         if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
8173                 pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
8174                     ioc->name, __func__);
8175                 goto out;
8176         }
8177         ioc->scsih_cmds.status = MPT3_CMD_PENDING;
8178
8179         smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
8180         if (!smid) {
8181                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
8182                     ioc->name, __func__);
8183                 ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8184                 goto out;
8185         }
8186
8187         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
8188         ioc->scsih_cmds.smid = smid;
8189         memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
8190
8191         mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
8192         mpi_request->Action = MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED;
8193
8194         if (!ioc->hide_ir_msg)
8195                 pr_info(MPT3SAS_FMT "IR shutdown (sending)\n", ioc->name);
8196         init_completion(&ioc->scsih_cmds.done);
8197         ioc->put_smid_default(ioc, smid);
8198         wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
8199
8200         if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
8201                 pr_err(MPT3SAS_FMT "%s: timeout\n",
8202                     ioc->name, __func__);
8203                 goto out;
8204         }
8205
8206         if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
8207                 mpi_reply = ioc->scsih_cmds.reply;
8208                 if (!ioc->hide_ir_msg)
8209                         pr_info(MPT3SAS_FMT "IR shutdown "
8210                            "(complete): ioc_status(0x%04x), loginfo(0x%08x)\n",
8211                             ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
8212                             le32_to_cpu(mpi_reply->IOCLogInfo));
8213         }
8214
8215  out:
8216         ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8217         mutex_unlock(&ioc->scsih_cmds.mutex);
8218 }
8219
8220 /**
8221  * scsih_remove - detach and remove add host
8222  * @pdev: PCI device struct
8223  *
8224  * Routine called when unloading the driver.
8225  * Return nothing.
8226  */
8227 static void scsih_remove(struct pci_dev *pdev)
8228 {
8229         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8230         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8231         struct _sas_port *mpt3sas_port, *next_port;
8232         struct _raid_device *raid_device, *next;
8233         struct MPT3SAS_TARGET *sas_target_priv_data;
8234         struct workqueue_struct *wq;
8235         unsigned long flags;
8236
8237         ioc->remove_host = 1;
8238         _scsih_fw_event_cleanup_queue(ioc);
8239
8240         spin_lock_irqsave(&ioc->fw_event_lock, flags);
8241         wq = ioc->firmware_event_thread;
8242         ioc->firmware_event_thread = NULL;
8243         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8244         if (wq)
8245                 destroy_workqueue(wq);
8246
8247         /* release all the volumes */
8248         _scsih_ir_shutdown(ioc);
8249         list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list,
8250             list) {
8251                 if (raid_device->starget) {
8252                         sas_target_priv_data =
8253                             raid_device->starget->hostdata;
8254                         sas_target_priv_data->deleted = 1;
8255                         scsi_remove_target(&raid_device->starget->dev);
8256                 }
8257                 pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
8258                         ioc->name,  raid_device->handle,
8259                     (unsigned long long) raid_device->wwid);
8260                 _scsih_raid_device_remove(ioc, raid_device);
8261         }
8262
8263         /* free ports attached to the sas_host */
8264         list_for_each_entry_safe(mpt3sas_port, next_port,
8265            &ioc->sas_hba.sas_port_list, port_list) {
8266                 if (mpt3sas_port->remote_identify.device_type ==
8267                     SAS_END_DEVICE)
8268                         mpt3sas_device_remove_by_sas_address(ioc,
8269                             mpt3sas_port->remote_identify.sas_address);
8270                 else if (mpt3sas_port->remote_identify.device_type ==
8271                     SAS_EDGE_EXPANDER_DEVICE ||
8272                     mpt3sas_port->remote_identify.device_type ==
8273                     SAS_FANOUT_EXPANDER_DEVICE)
8274                         mpt3sas_expander_remove(ioc,
8275                             mpt3sas_port->remote_identify.sas_address);
8276         }
8277
8278         /* free phys attached to the sas_host */
8279         if (ioc->sas_hba.num_phys) {
8280                 kfree(ioc->sas_hba.phy);
8281                 ioc->sas_hba.phy = NULL;
8282                 ioc->sas_hba.num_phys = 0;
8283         }
8284
8285         sas_remove_host(shost);
8286         mpt3sas_base_detach(ioc);
8287         spin_lock(&gioc_lock);
8288         list_del(&ioc->list);
8289         spin_unlock(&gioc_lock);
8290         scsi_host_put(shost);
8291 }
8292
8293 /**
8294  * scsih_shutdown - routine call during system shutdown
8295  * @pdev: PCI device struct
8296  *
8297  * Return nothing.
8298  */
8299 static void
8300 scsih_shutdown(struct pci_dev *pdev)
8301 {
8302         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8303         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8304         struct workqueue_struct *wq;
8305         unsigned long flags;
8306
8307         ioc->remove_host = 1;
8308         _scsih_fw_event_cleanup_queue(ioc);
8309
8310         spin_lock_irqsave(&ioc->fw_event_lock, flags);
8311         wq = ioc->firmware_event_thread;
8312         ioc->firmware_event_thread = NULL;
8313         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8314         if (wq)
8315                 destroy_workqueue(wq);
8316
8317         _scsih_ir_shutdown(ioc);
8318         mpt3sas_base_detach(ioc);
8319 }
8320
8321
8322 /**
8323  * _scsih_probe_boot_devices - reports 1st device
8324  * @ioc: per adapter object
8325  *
8326  * If specified in bios page 2, this routine reports the 1st
8327  * device scsi-ml or sas transport for persistent boot device
8328  * purposes.  Please refer to function _scsih_determine_boot_device()
8329  */
8330 static void
8331 _scsih_probe_boot_devices(struct MPT3SAS_ADAPTER *ioc)
8332 {
8333         u8 is_raid;
8334         void *device;
8335         struct _sas_device *sas_device;
8336         struct _raid_device *raid_device;
8337         u16 handle;
8338         u64 sas_address_parent;
8339         u64 sas_address;
8340         unsigned long flags;
8341         int rc;
8342
8343          /* no Bios, return immediately */
8344         if (!ioc->bios_pg3.BiosVersion)
8345                 return;
8346
8347         device = NULL;
8348         is_raid = 0;
8349         if (ioc->req_boot_device.device) {
8350                 device =  ioc->req_boot_device.device;
8351                 is_raid = ioc->req_boot_device.is_raid;
8352         } else if (ioc->req_alt_boot_device.device) {
8353                 device =  ioc->req_alt_boot_device.device;
8354                 is_raid = ioc->req_alt_boot_device.is_raid;
8355         } else if (ioc->current_boot_device.device) {
8356                 device =  ioc->current_boot_device.device;
8357                 is_raid = ioc->current_boot_device.is_raid;
8358         }
8359
8360         if (!device)
8361                 return;
8362
8363         if (is_raid) {
8364                 raid_device = device;
8365                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8366                     raid_device->id, 0);
8367                 if (rc)
8368                         _scsih_raid_device_remove(ioc, raid_device);
8369         } else {
8370                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
8371                 sas_device = device;
8372                 handle = sas_device->handle;
8373                 sas_address_parent = sas_device->sas_address_parent;
8374                 sas_address = sas_device->sas_address;
8375                 list_move_tail(&sas_device->list, &ioc->sas_device_list);
8376                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8377
8378                 if (ioc->hide_drives)
8379                         return;
8380                 if (!mpt3sas_transport_port_add(ioc, handle,
8381                     sas_address_parent)) {
8382                         _scsih_sas_device_remove(ioc, sas_device);
8383                 } else if (!sas_device->starget) {
8384                         if (!ioc->is_driver_loading) {
8385                                 mpt3sas_transport_port_remove(ioc,
8386                                     sas_address,
8387                                     sas_address_parent);
8388                                 _scsih_sas_device_remove(ioc, sas_device);
8389                         }
8390                 }
8391         }
8392 }
8393
8394 /**
8395  * _scsih_probe_raid - reporting raid volumes to scsi-ml
8396  * @ioc: per adapter object
8397  *
8398  * Called during initial loading of the driver.
8399  */
8400 static void
8401 _scsih_probe_raid(struct MPT3SAS_ADAPTER *ioc)
8402 {
8403         struct _raid_device *raid_device, *raid_next;
8404         int rc;
8405
8406         list_for_each_entry_safe(raid_device, raid_next,
8407             &ioc->raid_device_list, list) {
8408                 if (raid_device->starget)
8409                         continue;
8410                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8411                     raid_device->id, 0);
8412                 if (rc)
8413                         _scsih_raid_device_remove(ioc, raid_device);
8414         }
8415 }
8416
8417 static struct _sas_device *get_next_sas_device(struct MPT3SAS_ADAPTER *ioc)
8418 {
8419         struct _sas_device *sas_device = NULL;
8420         unsigned long flags;
8421
8422         spin_lock_irqsave(&ioc->sas_device_lock, flags);
8423         if (!list_empty(&ioc->sas_device_init_list)) {
8424                 sas_device = list_first_entry(&ioc->sas_device_init_list,
8425                                 struct _sas_device, list);
8426                 sas_device_get(sas_device);
8427         }
8428         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8429
8430         return sas_device;
8431 }
8432
8433 static void sas_device_make_active(struct MPT3SAS_ADAPTER *ioc,
8434                 struct _sas_device *sas_device)
8435 {
8436         unsigned long flags;
8437
8438         spin_lock_irqsave(&ioc->sas_device_lock, flags);
8439
8440         /*
8441          * Since we dropped the lock during the call to port_add(), we need to
8442          * be careful here that somebody else didn't move or delete this item
8443          * while we were busy with other things.
8444          *
8445          * If it was on the list, we need a put() for the reference the list
8446          * had. Either way, we need a get() for the destination list.
8447          */
8448         if (!list_empty(&sas_device->list)) {
8449                 list_del_init(&sas_device->list);
8450                 sas_device_put(sas_device);
8451         }
8452
8453         sas_device_get(sas_device);
8454         list_add_tail(&sas_device->list, &ioc->sas_device_list);
8455
8456         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8457 }
8458
8459 /**
8460  * _scsih_probe_sas - reporting sas devices to sas transport
8461  * @ioc: per adapter object
8462  *
8463  * Called during initial loading of the driver.
8464  */
8465 static void
8466 _scsih_probe_sas(struct MPT3SAS_ADAPTER *ioc)
8467 {
8468         struct _sas_device *sas_device;
8469
8470         if (ioc->hide_drives)
8471                 return;
8472
8473         while ((sas_device = get_next_sas_device(ioc))) {
8474                 if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
8475                     sas_device->sas_address_parent)) {
8476                         _scsih_sas_device_remove(ioc, sas_device);
8477                         sas_device_put(sas_device);
8478                         continue;
8479                 } else if (!sas_device->starget) {
8480                         /*
8481                          * When asyn scanning is enabled, its not possible to
8482                          * remove devices while scanning is turned on due to an
8483                          * oops in scsi_sysfs_add_sdev()->add_device()->
8484                          * sysfs_addrm_start()
8485                          */
8486                         if (!ioc->is_driver_loading) {
8487                                 mpt3sas_transport_port_remove(ioc,
8488                                     sas_device->sas_address,
8489                                     sas_device->sas_address_parent);
8490                                 _scsih_sas_device_remove(ioc, sas_device);
8491                                 sas_device_put(sas_device);
8492                                 continue;
8493                         }
8494                 }
8495                 sas_device_make_active(ioc, sas_device);
8496                 sas_device_put(sas_device);
8497         }
8498 }
8499
8500 /**
8501  * _scsih_probe_devices - probing for devices
8502  * @ioc: per adapter object
8503  *
8504  * Called during initial loading of the driver.
8505  */
8506 static void
8507 _scsih_probe_devices(struct MPT3SAS_ADAPTER *ioc)
8508 {
8509         u16 volume_mapping_flags;
8510
8511         if (!(ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR))
8512                 return;  /* return when IOC doesn't support initiator mode */
8513
8514         _scsih_probe_boot_devices(ioc);
8515
8516         if (ioc->ir_firmware) {
8517                 volume_mapping_flags =
8518                     le16_to_cpu(ioc->ioc_pg8.IRVolumeMappingFlags) &
8519                     MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE;
8520                 if (volume_mapping_flags ==
8521                     MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING) {
8522                         _scsih_probe_raid(ioc);
8523                         _scsih_probe_sas(ioc);
8524                 } else {
8525                         _scsih_probe_sas(ioc);
8526                         _scsih_probe_raid(ioc);
8527                 }
8528         } else
8529                 _scsih_probe_sas(ioc);
8530 }
8531
8532 /**
8533  * scsih_scan_start - scsi lld callback for .scan_start
8534  * @shost: SCSI host pointer
8535  *
8536  * The shost has the ability to discover targets on its own instead
8537  * of scanning the entire bus.  In our implemention, we will kick off
8538  * firmware discovery.
8539  */
8540 static void
8541 scsih_scan_start(struct Scsi_Host *shost)
8542 {
8543         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8544         int rc;
8545         if (diag_buffer_enable != -1 && diag_buffer_enable != 0)
8546                 mpt3sas_enable_diag_buffer(ioc, diag_buffer_enable);
8547
8548         if (disable_discovery > 0)
8549                 return;
8550
8551         ioc->start_scan = 1;
8552         rc = mpt3sas_port_enable(ioc);
8553
8554         if (rc != 0)
8555                 pr_info(MPT3SAS_FMT "port enable: FAILED\n", ioc->name);
8556 }
8557
8558 /**
8559  * scsih_scan_finished - scsi lld callback for .scan_finished
8560  * @shost: SCSI host pointer
8561  * @time: elapsed time of the scan in jiffies
8562  *
8563  * This function will be called periodicallyn until it returns 1 with the
8564  * scsi_host and the elapsed time of the scan in jiffies. In our implemention,
8565  * we wait for firmware discovery to complete, then return 1.
8566  */
8567 static int
8568 scsih_scan_finished(struct Scsi_Host *shost, unsigned long time)
8569 {
8570         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8571
8572         if (disable_discovery > 0) {
8573                 ioc->is_driver_loading = 0;
8574                 ioc->wait_for_discovery_to_complete = 0;
8575                 return 1;
8576         }
8577
8578         if (time >= (300 * HZ)) {
8579                 ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8580                 pr_info(MPT3SAS_FMT
8581                         "port enable: FAILED with timeout (timeout=300s)\n",
8582                         ioc->name);
8583                 ioc->is_driver_loading = 0;
8584                 return 1;
8585         }
8586
8587         if (ioc->start_scan)
8588                 return 0;
8589
8590         if (ioc->start_scan_failed) {
8591                 pr_info(MPT3SAS_FMT
8592                         "port enable: FAILED with (ioc_status=0x%08x)\n",
8593                         ioc->name, ioc->start_scan_failed);
8594                 ioc->is_driver_loading = 0;
8595                 ioc->wait_for_discovery_to_complete = 0;
8596                 ioc->remove_host = 1;
8597                 return 1;
8598         }
8599
8600         pr_info(MPT3SAS_FMT "port enable: SUCCESS\n", ioc->name);
8601         ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8602
8603         if (ioc->wait_for_discovery_to_complete) {
8604                 ioc->wait_for_discovery_to_complete = 0;
8605                 _scsih_probe_devices(ioc);
8606         }
8607         mpt3sas_base_start_watchdog(ioc);
8608         ioc->is_driver_loading = 0;
8609         return 1;
8610 }
8611
8612 /* shost template for SAS 2.0 HBA devices */
8613 static struct scsi_host_template mpt2sas_driver_template = {
8614         .module                         = THIS_MODULE,
8615         .name                           = "Fusion MPT SAS Host",
8616         .proc_name                      = MPT2SAS_DRIVER_NAME,
8617         .queuecommand                   = scsih_qcmd,
8618         .target_alloc                   = scsih_target_alloc,
8619         .slave_alloc                    = scsih_slave_alloc,
8620         .slave_configure                = scsih_slave_configure,
8621         .target_destroy                 = scsih_target_destroy,
8622         .slave_destroy                  = scsih_slave_destroy,
8623         .scan_finished                  = scsih_scan_finished,
8624         .scan_start                     = scsih_scan_start,
8625         .change_queue_depth             = scsih_change_queue_depth,
8626         .eh_abort_handler               = scsih_abort,
8627         .eh_device_reset_handler        = scsih_dev_reset,
8628         .eh_target_reset_handler        = scsih_target_reset,
8629         .eh_host_reset_handler          = scsih_host_reset,
8630         .bios_param                     = scsih_bios_param,
8631         .can_queue                      = 1,
8632         .this_id                        = -1,
8633         .sg_tablesize                   = MPT2SAS_SG_DEPTH,
8634         .max_sectors                    = 32767,
8635         .cmd_per_lun                    = 7,
8636         .use_clustering                 = ENABLE_CLUSTERING,
8637         .shost_attrs                    = mpt3sas_host_attrs,
8638         .sdev_attrs                     = mpt3sas_dev_attrs,
8639         .track_queue_depth              = 1,
8640 };
8641
8642 /* raid transport support for SAS 2.0 HBA devices */
8643 static struct raid_function_template mpt2sas_raid_functions = {
8644         .cookie         = &mpt2sas_driver_template,
8645         .is_raid        = scsih_is_raid,
8646         .get_resync     = scsih_get_resync,
8647         .get_state      = scsih_get_state,
8648 };
8649
8650 /* shost template for SAS 3.0 HBA devices */
8651 static struct scsi_host_template mpt3sas_driver_template = {
8652         .module                         = THIS_MODULE,
8653         .name                           = "Fusion MPT SAS Host",
8654         .proc_name                      = MPT3SAS_DRIVER_NAME,
8655         .queuecommand                   = scsih_qcmd,
8656         .target_alloc                   = scsih_target_alloc,
8657         .slave_alloc                    = scsih_slave_alloc,
8658         .slave_configure                = scsih_slave_configure,
8659         .target_destroy                 = scsih_target_destroy,
8660         .slave_destroy                  = scsih_slave_destroy,
8661         .scan_finished                  = scsih_scan_finished,
8662         .scan_start                     = scsih_scan_start,
8663         .change_queue_depth             = scsih_change_queue_depth,
8664         .eh_abort_handler               = scsih_abort,
8665         .eh_device_reset_handler        = scsih_dev_reset,
8666         .eh_target_reset_handler        = scsih_target_reset,
8667         .eh_host_reset_handler          = scsih_host_reset,
8668         .bios_param                     = scsih_bios_param,
8669         .can_queue                      = 1,
8670         .this_id                        = -1,
8671         .sg_tablesize                   = MPT3SAS_SG_DEPTH,
8672         .max_sectors                    = 32767,
8673         .cmd_per_lun                    = 7,
8674         .use_clustering                 = ENABLE_CLUSTERING,
8675         .shost_attrs                    = mpt3sas_host_attrs,
8676         .sdev_attrs                     = mpt3sas_dev_attrs,
8677         .track_queue_depth              = 1,
8678 };
8679
8680 /* raid transport support for SAS 3.0 HBA devices */
8681 static struct raid_function_template mpt3sas_raid_functions = {
8682         .cookie         = &mpt3sas_driver_template,
8683         .is_raid        = scsih_is_raid,
8684         .get_resync     = scsih_get_resync,
8685         .get_state      = scsih_get_state,
8686 };
8687
8688 /**
8689  * _scsih_determine_hba_mpi_version - determine in which MPI version class
8690  *                                      this device belongs to.
8691  * @pdev: PCI device struct
8692  *
8693  * return MPI2_VERSION for SAS 2.0 HBA devices,
8694  *      MPI25_VERSION for SAS 3.0 HBA devices, and
8695  *      MPI26 VERSION for Cutlass & Invader SAS 3.0 HBA devices
8696  */
8697 static u16
8698 _scsih_determine_hba_mpi_version(struct pci_dev *pdev)
8699 {
8700
8701         switch (pdev->device) {
8702         case MPI2_MFGPAGE_DEVID_SSS6200:
8703         case MPI2_MFGPAGE_DEVID_SAS2004:
8704         case MPI2_MFGPAGE_DEVID_SAS2008:
8705         case MPI2_MFGPAGE_DEVID_SAS2108_1:
8706         case MPI2_MFGPAGE_DEVID_SAS2108_2:
8707         case MPI2_MFGPAGE_DEVID_SAS2108_3:
8708         case MPI2_MFGPAGE_DEVID_SAS2116_1:
8709         case MPI2_MFGPAGE_DEVID_SAS2116_2:
8710         case MPI2_MFGPAGE_DEVID_SAS2208_1:
8711         case MPI2_MFGPAGE_DEVID_SAS2208_2:
8712         case MPI2_MFGPAGE_DEVID_SAS2208_3:
8713         case MPI2_MFGPAGE_DEVID_SAS2208_4:
8714         case MPI2_MFGPAGE_DEVID_SAS2208_5:
8715         case MPI2_MFGPAGE_DEVID_SAS2208_6:
8716         case MPI2_MFGPAGE_DEVID_SAS2308_1:
8717         case MPI2_MFGPAGE_DEVID_SAS2308_2:
8718         case MPI2_MFGPAGE_DEVID_SAS2308_3:
8719                 return MPI2_VERSION;
8720         case MPI25_MFGPAGE_DEVID_SAS3004:
8721         case MPI25_MFGPAGE_DEVID_SAS3008:
8722         case MPI25_MFGPAGE_DEVID_SAS3108_1:
8723         case MPI25_MFGPAGE_DEVID_SAS3108_2:
8724         case MPI25_MFGPAGE_DEVID_SAS3108_5:
8725         case MPI25_MFGPAGE_DEVID_SAS3108_6:
8726                 return MPI25_VERSION;
8727         case MPI26_MFGPAGE_DEVID_SAS3216:
8728         case MPI26_MFGPAGE_DEVID_SAS3224:
8729         case MPI26_MFGPAGE_DEVID_SAS3316_1:
8730         case MPI26_MFGPAGE_DEVID_SAS3316_2:
8731         case MPI26_MFGPAGE_DEVID_SAS3316_3:
8732         case MPI26_MFGPAGE_DEVID_SAS3316_4:
8733         case MPI26_MFGPAGE_DEVID_SAS3324_1:
8734         case MPI26_MFGPAGE_DEVID_SAS3324_2:
8735         case MPI26_MFGPAGE_DEVID_SAS3324_3:
8736         case MPI26_MFGPAGE_DEVID_SAS3324_4:
8737         case MPI26_MFGPAGE_DEVID_SAS3508:
8738         case MPI26_MFGPAGE_DEVID_SAS3508_1:
8739         case MPI26_MFGPAGE_DEVID_SAS3408:
8740         case MPI26_MFGPAGE_DEVID_SAS3516:
8741         case MPI26_MFGPAGE_DEVID_SAS3516_1:
8742         case MPI26_MFGPAGE_DEVID_SAS3416:
8743                 return MPI26_VERSION;
8744         }
8745         return 0;
8746 }
8747
8748 /**
8749  * _scsih_probe - attach and add scsi host
8750  * @pdev: PCI device struct
8751  * @id: pci device id
8752  *
8753  * Returns 0 success, anything else error.
8754  */
8755 static int
8756 _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
8757 {
8758         struct MPT3SAS_ADAPTER *ioc;
8759         struct Scsi_Host *shost = NULL;
8760         int rv;
8761         u16 hba_mpi_version;
8762
8763         /* Determine in which MPI version class this pci device belongs */
8764         hba_mpi_version = _scsih_determine_hba_mpi_version(pdev);
8765         if (hba_mpi_version == 0)
8766                 return -ENODEV;
8767
8768         /* Enumerate only SAS 2.0 HBA's if hbas_to_enumerate is one,
8769          * for other generation HBA's return with -ENODEV
8770          */
8771         if ((hbas_to_enumerate == 1) && (hba_mpi_version !=  MPI2_VERSION))
8772                 return -ENODEV;
8773
8774         /* Enumerate only SAS 3.0 HBA's if hbas_to_enumerate is two,
8775          * for other generation HBA's return with -ENODEV
8776          */
8777         if ((hbas_to_enumerate == 2) && (!(hba_mpi_version ==  MPI25_VERSION
8778                 || hba_mpi_version ==  MPI26_VERSION)))
8779                 return -ENODEV;
8780
8781         switch (hba_mpi_version) {
8782         case MPI2_VERSION:
8783                 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S |
8784                         PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
8785                 /* Use mpt2sas driver host template for SAS 2.0 HBA's */
8786                 shost = scsi_host_alloc(&mpt2sas_driver_template,
8787                   sizeof(struct MPT3SAS_ADAPTER));
8788                 if (!shost)
8789                         return -ENODEV;
8790                 ioc = shost_priv(shost);
8791                 memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8792                 ioc->hba_mpi_version_belonged = hba_mpi_version;
8793                 ioc->id = mpt2_ids++;
8794                 sprintf(ioc->driver_name, "%s", MPT2SAS_DRIVER_NAME);
8795                 if (pdev->device == MPI2_MFGPAGE_DEVID_SSS6200) {
8796                         ioc->is_warpdrive = 1;
8797                         ioc->hide_ir_msg = 1;
8798                 } else
8799                         ioc->mfg_pg10_hide_flag = MFG_PAGE10_EXPOSE_ALL_DISKS;
8800                 break;
8801         case MPI25_VERSION:
8802         case MPI26_VERSION:
8803                 /* Use mpt3sas driver host template for SAS 3.0 HBA's */
8804                 shost = scsi_host_alloc(&mpt3sas_driver_template,
8805                   sizeof(struct MPT3SAS_ADAPTER));
8806                 if (!shost)
8807                         return -ENODEV;
8808                 ioc = shost_priv(shost);
8809                 memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8810                 ioc->hba_mpi_version_belonged = hba_mpi_version;
8811                 ioc->id = mpt3_ids++;
8812                 sprintf(ioc->driver_name, "%s", MPT3SAS_DRIVER_NAME);
8813                 switch (pdev->device) {
8814                 case MPI26_MFGPAGE_DEVID_SAS3508:
8815                 case MPI26_MFGPAGE_DEVID_SAS3508_1:
8816                 case MPI26_MFGPAGE_DEVID_SAS3408:
8817                 case MPI26_MFGPAGE_DEVID_SAS3516:
8818                 case MPI26_MFGPAGE_DEVID_SAS3516_1:
8819                 case MPI26_MFGPAGE_DEVID_SAS3416:
8820                         ioc->is_gen35_ioc = 1;
8821                         break;
8822                 default:
8823                         ioc->is_gen35_ioc = 0;
8824                 }
8825                 if ((ioc->hba_mpi_version_belonged == MPI25_VERSION &&
8826                         pdev->revision >= SAS3_PCI_DEVICE_C0_REVISION) ||
8827                         (ioc->hba_mpi_version_belonged == MPI26_VERSION)) {
8828                         ioc->combined_reply_queue = 1;
8829                         if (ioc->is_gen35_ioc)
8830                                 ioc->combined_reply_index_count =
8831                                  MPT3_SUP_REPLY_POST_HOST_INDEX_REG_COUNT_G35;
8832                         else
8833                                 ioc->combined_reply_index_count =
8834                                  MPT3_SUP_REPLY_POST_HOST_INDEX_REG_COUNT_G3;
8835                 }
8836                 break;
8837         default:
8838                 return -ENODEV;
8839         }
8840
8841         INIT_LIST_HEAD(&ioc->list);
8842         spin_lock(&gioc_lock);
8843         list_add_tail(&ioc->list, &mpt3sas_ioc_list);
8844         spin_unlock(&gioc_lock);
8845         ioc->shost = shost;
8846         ioc->pdev = pdev;
8847         ioc->scsi_io_cb_idx = scsi_io_cb_idx;
8848         ioc->tm_cb_idx = tm_cb_idx;
8849         ioc->ctl_cb_idx = ctl_cb_idx;
8850         ioc->base_cb_idx = base_cb_idx;
8851         ioc->port_enable_cb_idx = port_enable_cb_idx;
8852         ioc->transport_cb_idx = transport_cb_idx;
8853         ioc->scsih_cb_idx = scsih_cb_idx;
8854         ioc->config_cb_idx = config_cb_idx;
8855         ioc->tm_tr_cb_idx = tm_tr_cb_idx;
8856         ioc->tm_tr_volume_cb_idx = tm_tr_volume_cb_idx;
8857         ioc->tm_sas_control_cb_idx = tm_sas_control_cb_idx;
8858         ioc->logging_level = logging_level;
8859         ioc->schedule_dead_ioc_flush_running_cmds = &_scsih_flush_running_cmds;
8860         /* misc semaphores and spin locks */
8861         mutex_init(&ioc->reset_in_progress_mutex);
8862         /* initializing pci_access_mutex lock */
8863         mutex_init(&ioc->pci_access_mutex);
8864         spin_lock_init(&ioc->ioc_reset_in_progress_lock);
8865         spin_lock_init(&ioc->scsi_lookup_lock);
8866         spin_lock_init(&ioc->sas_device_lock);
8867         spin_lock_init(&ioc->sas_node_lock);
8868         spin_lock_init(&ioc->fw_event_lock);
8869         spin_lock_init(&ioc->raid_device_lock);
8870         spin_lock_init(&ioc->diag_trigger_lock);
8871
8872         INIT_LIST_HEAD(&ioc->sas_device_list);
8873         INIT_LIST_HEAD(&ioc->sas_device_init_list);
8874         INIT_LIST_HEAD(&ioc->sas_expander_list);
8875         INIT_LIST_HEAD(&ioc->fw_event_list);
8876         INIT_LIST_HEAD(&ioc->raid_device_list);
8877         INIT_LIST_HEAD(&ioc->sas_hba.sas_port_list);
8878         INIT_LIST_HEAD(&ioc->delayed_tr_list);
8879         INIT_LIST_HEAD(&ioc->delayed_sc_list);
8880         INIT_LIST_HEAD(&ioc->delayed_event_ack_list);
8881         INIT_LIST_HEAD(&ioc->delayed_tr_volume_list);
8882         INIT_LIST_HEAD(&ioc->reply_queue_list);
8883
8884         sprintf(ioc->name, "%s_cm%d", ioc->driver_name, ioc->id);
8885
8886         /* init shost parameters */
8887         shost->max_cmd_len = 32;
8888         shost->max_lun = max_lun;
8889         shost->transportt = mpt3sas_transport_template;
8890         shost->unique_id = ioc->id;
8891
8892         if (max_sectors != 0xFFFF) {
8893                 if (max_sectors < 64) {
8894                         shost->max_sectors = 64;
8895                         pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8896                             "for max_sectors, range is 64 to 32767. Assigning "
8897                             "value of 64.\n", ioc->name, max_sectors);
8898                 } else if (max_sectors > 32767) {
8899                         shost->max_sectors = 32767;
8900                         pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8901                             "for max_sectors, range is 64 to 32767. Assigning "
8902                             "default value of 32767.\n", ioc->name,
8903                             max_sectors);
8904                 } else {
8905                         shost->max_sectors = max_sectors & 0xFFFE;
8906                         pr_info(MPT3SAS_FMT
8907                                 "The max_sectors value is set to %d\n",
8908                                 ioc->name, shost->max_sectors);
8909                 }
8910         }
8911
8912         /* register EEDP capabilities with SCSI layer */
8913         if (prot_mask > 0)
8914                 scsi_host_set_prot(shost, prot_mask);
8915         else
8916                 scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION
8917                                    | SHOST_DIF_TYPE2_PROTECTION
8918                                    | SHOST_DIF_TYPE3_PROTECTION);
8919
8920         scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
8921
8922         /* event thread */
8923         snprintf(ioc->firmware_event_name, sizeof(ioc->firmware_event_name),
8924             "fw_event_%s%d", ioc->driver_name, ioc->id);
8925         ioc->firmware_event_thread = alloc_ordered_workqueue(
8926             ioc->firmware_event_name, WQ_MEM_RECLAIM);
8927         if (!ioc->firmware_event_thread) {
8928                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8929                     ioc->name, __FILE__, __LINE__, __func__);
8930                 rv = -ENODEV;
8931                 goto out_thread_fail;
8932         }
8933
8934         ioc->is_driver_loading = 1;
8935         if ((mpt3sas_base_attach(ioc))) {
8936                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8937                     ioc->name, __FILE__, __LINE__, __func__);
8938                 rv = -ENODEV;
8939                 goto out_attach_fail;
8940         }
8941
8942         if (ioc->is_warpdrive) {
8943                 if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_EXPOSE_ALL_DISKS)
8944                         ioc->hide_drives = 0;
8945                 else if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_HIDE_ALL_DISKS)
8946                         ioc->hide_drives = 1;
8947                 else {
8948                         if (mpt3sas_get_num_volumes(ioc))
8949                                 ioc->hide_drives = 1;
8950                         else
8951                                 ioc->hide_drives = 0;
8952                 }
8953         } else
8954                 ioc->hide_drives = 0;
8955
8956         rv = scsi_add_host(shost, &pdev->dev);
8957         if (rv) {
8958                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8959                     ioc->name, __FILE__, __LINE__, __func__);
8960                 goto out_add_shost_fail;
8961         }
8962
8963         scsi_scan_host(shost);
8964         return 0;
8965 out_add_shost_fail:
8966         mpt3sas_base_detach(ioc);
8967  out_attach_fail:
8968         destroy_workqueue(ioc->firmware_event_thread);
8969  out_thread_fail:
8970         spin_lock(&gioc_lock);
8971         list_del(&ioc->list);
8972         spin_unlock(&gioc_lock);
8973         scsi_host_put(shost);
8974         return rv;
8975 }
8976
8977 #ifdef CONFIG_PM
8978 /**
8979  * scsih_suspend - power management suspend main entry point
8980  * @pdev: PCI device struct
8981  * @state: PM state change to (usually PCI_D3)
8982  *
8983  * Returns 0 success, anything else error.
8984  */
8985 static int
8986 scsih_suspend(struct pci_dev *pdev, pm_message_t state)
8987 {
8988         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8989         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8990         pci_power_t device_state;
8991
8992         mpt3sas_base_stop_watchdog(ioc);
8993         flush_scheduled_work();
8994         scsi_block_requests(shost);
8995         device_state = pci_choose_state(pdev, state);
8996         pr_info(MPT3SAS_FMT
8997                 "pdev=0x%p, slot=%s, entering operating state [D%d]\n",
8998                 ioc->name, pdev, pci_name(pdev), device_state);
8999
9000         pci_save_state(pdev);
9001         mpt3sas_base_free_resources(ioc);
9002         pci_set_power_state(pdev, device_state);
9003         return 0;
9004 }
9005
9006 /**
9007  * scsih_resume - power management resume main entry point
9008  * @pdev: PCI device struct
9009  *
9010  * Returns 0 success, anything else error.
9011  */
9012 static int
9013 scsih_resume(struct pci_dev *pdev)
9014 {
9015         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9016         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9017         pci_power_t device_state = pdev->current_state;
9018         int r;
9019
9020         pr_info(MPT3SAS_FMT
9021                 "pdev=0x%p, slot=%s, previous operating state [D%d]\n",
9022                 ioc->name, pdev, pci_name(pdev), device_state);
9023
9024         pci_set_power_state(pdev, PCI_D0);
9025         pci_enable_wake(pdev, PCI_D0, 0);
9026         pci_restore_state(pdev);
9027         ioc->pdev = pdev;
9028         r = mpt3sas_base_map_resources(ioc);
9029         if (r)
9030                 return r;
9031
9032         mpt3sas_base_hard_reset_handler(ioc, SOFT_RESET);
9033         scsi_unblock_requests(shost);
9034         mpt3sas_base_start_watchdog(ioc);
9035         return 0;
9036 }
9037 #endif /* CONFIG_PM */
9038
9039 /**
9040  * scsih_pci_error_detected - Called when a PCI error is detected.
9041  * @pdev: PCI device struct
9042  * @state: PCI channel state
9043  *
9044  * Description: Called when a PCI error is detected.
9045  *
9046  * Return value:
9047  *      PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9048  */
9049 static pci_ers_result_t
9050 scsih_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9051 {
9052         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9053         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9054
9055         pr_info(MPT3SAS_FMT "PCI error: detected callback, state(%d)!!\n",
9056             ioc->name, state);
9057
9058         switch (state) {
9059         case pci_channel_io_normal:
9060                 return PCI_ERS_RESULT_CAN_RECOVER;
9061         case pci_channel_io_frozen:
9062                 /* Fatal error, prepare for slot reset */
9063                 ioc->pci_error_recovery = 1;
9064                 scsi_block_requests(ioc->shost);
9065                 mpt3sas_base_stop_watchdog(ioc);
9066                 mpt3sas_base_free_resources(ioc);
9067                 return PCI_ERS_RESULT_NEED_RESET;
9068         case pci_channel_io_perm_failure:
9069                 /* Permanent error, prepare for device removal */
9070                 ioc->pci_error_recovery = 1;
9071                 mpt3sas_base_stop_watchdog(ioc);
9072                 _scsih_flush_running_cmds(ioc);
9073                 return PCI_ERS_RESULT_DISCONNECT;
9074         }
9075         return PCI_ERS_RESULT_NEED_RESET;
9076 }
9077
9078 /**
9079  * scsih_pci_slot_reset - Called when PCI slot has been reset.
9080  * @pdev: PCI device struct
9081  *
9082  * Description: This routine is called by the pci error recovery
9083  * code after the PCI slot has been reset, just before we
9084  * should resume normal operations.
9085  */
9086 static pci_ers_result_t
9087 scsih_pci_slot_reset(struct pci_dev *pdev)
9088 {
9089         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9090         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9091         int rc;
9092
9093         pr_info(MPT3SAS_FMT "PCI error: slot reset callback!!\n",
9094              ioc->name);
9095
9096         ioc->pci_error_recovery = 0;
9097         ioc->pdev = pdev;
9098         pci_restore_state(pdev);
9099         rc = mpt3sas_base_map_resources(ioc);
9100         if (rc)
9101                 return PCI_ERS_RESULT_DISCONNECT;
9102
9103         rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
9104
9105         pr_warn(MPT3SAS_FMT "hard reset: %s\n", ioc->name,
9106             (rc == 0) ? "success" : "failed");
9107
9108         if (!rc)
9109                 return PCI_ERS_RESULT_RECOVERED;
9110         else
9111                 return PCI_ERS_RESULT_DISCONNECT;
9112 }
9113
9114 /**
9115  * scsih_pci_resume() - resume normal ops after PCI reset
9116  * @pdev: pointer to PCI device
9117  *
9118  * Called when the error recovery driver tells us that its
9119  * OK to resume normal operation. Use completion to allow
9120  * halted scsi ops to resume.
9121  */
9122 static void
9123 scsih_pci_resume(struct pci_dev *pdev)
9124 {
9125         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9126         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9127
9128         pr_info(MPT3SAS_FMT "PCI error: resume callback!!\n", ioc->name);
9129
9130         pci_cleanup_aer_uncorrect_error_status(pdev);
9131         mpt3sas_base_start_watchdog(ioc);
9132         scsi_unblock_requests(ioc->shost);
9133 }
9134
9135 /**
9136  * scsih_pci_mmio_enabled - Enable MMIO and dump debug registers
9137  * @pdev: pointer to PCI device
9138  */
9139 static pci_ers_result_t
9140 scsih_pci_mmio_enabled(struct pci_dev *pdev)
9141 {
9142         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9143         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9144
9145         pr_info(MPT3SAS_FMT "PCI error: mmio enabled callback!!\n",
9146             ioc->name);
9147
9148         /* TODO - dump whatever for debugging purposes */
9149
9150         /* This called only if scsih_pci_error_detected returns
9151          * PCI_ERS_RESULT_CAN_RECOVER. Read/write to the device still
9152          * works, no need to reset slot.
9153          */
9154         return PCI_ERS_RESULT_RECOVERED;
9155 }
9156
9157 /**
9158  * scsih__ncq_prio_supp - Check for NCQ command priority support
9159  * @sdev: scsi device struct
9160  *
9161  * This is called when a user indicates they would like to enable
9162  * ncq command priorities. This works only on SATA devices.
9163  */
9164 bool scsih_ncq_prio_supp(struct scsi_device *sdev)
9165 {
9166         unsigned char *buf;
9167         bool ncq_prio_supp = false;
9168
9169         if (!scsi_device_supports_vpd(sdev))
9170                 return ncq_prio_supp;
9171
9172         buf = kmalloc(SCSI_VPD_PG_LEN, GFP_KERNEL);
9173         if (!buf)
9174                 return ncq_prio_supp;
9175
9176         if (!scsi_get_vpd_page(sdev, 0x89, buf, SCSI_VPD_PG_LEN))
9177                 ncq_prio_supp = (buf[213] >> 4) & 1;
9178
9179         kfree(buf);
9180         return ncq_prio_supp;
9181 }
9182 /*
9183  * The pci device ids are defined in mpi/mpi2_cnfg.h.
9184  */
9185 static const struct pci_device_id mpt3sas_pci_table[] = {
9186         /* Spitfire ~ 2004 */
9187         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2004,
9188                 PCI_ANY_ID, PCI_ANY_ID },
9189         /* Falcon ~ 2008 */
9190         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2008,
9191                 PCI_ANY_ID, PCI_ANY_ID },
9192         /* Liberator ~ 2108 */
9193         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_1,
9194                 PCI_ANY_ID, PCI_ANY_ID },
9195         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_2,
9196                 PCI_ANY_ID, PCI_ANY_ID },
9197         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_3,
9198                 PCI_ANY_ID, PCI_ANY_ID },
9199         /* Meteor ~ 2116 */
9200         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_1,
9201                 PCI_ANY_ID, PCI_ANY_ID },
9202         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_2,
9203                 PCI_ANY_ID, PCI_ANY_ID },
9204         /* Thunderbolt ~ 2208 */
9205         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_1,
9206                 PCI_ANY_ID, PCI_ANY_ID },
9207         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_2,
9208                 PCI_ANY_ID, PCI_ANY_ID },
9209         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_3,
9210                 PCI_ANY_ID, PCI_ANY_ID },
9211         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_4,
9212                 PCI_ANY_ID, PCI_ANY_ID },
9213         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_5,
9214                 PCI_ANY_ID, PCI_ANY_ID },
9215         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_6,
9216                 PCI_ANY_ID, PCI_ANY_ID },
9217         /* Mustang ~ 2308 */
9218         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_1,
9219                 PCI_ANY_ID, PCI_ANY_ID },
9220         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_2,
9221                 PCI_ANY_ID, PCI_ANY_ID },
9222         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_3,
9223                 PCI_ANY_ID, PCI_ANY_ID },
9224         /* SSS6200 */
9225         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SSS6200,
9226                 PCI_ANY_ID, PCI_ANY_ID },
9227         /* Fury ~ 3004 and 3008 */
9228         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3004,
9229                 PCI_ANY_ID, PCI_ANY_ID },
9230         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3008,
9231                 PCI_ANY_ID, PCI_ANY_ID },
9232         /* Invader ~ 3108 */
9233         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_1,
9234                 PCI_ANY_ID, PCI_ANY_ID },
9235         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_2,
9236                 PCI_ANY_ID, PCI_ANY_ID },
9237         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_5,
9238                 PCI_ANY_ID, PCI_ANY_ID },
9239         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_6,
9240                 PCI_ANY_ID, PCI_ANY_ID },
9241         /* Cutlass ~ 3216 and 3224 */
9242         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3216,
9243                 PCI_ANY_ID, PCI_ANY_ID },
9244         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3224,
9245                 PCI_ANY_ID, PCI_ANY_ID },
9246         /* Intruder ~ 3316 and 3324 */
9247         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_1,
9248                 PCI_ANY_ID, PCI_ANY_ID },
9249         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_2,
9250                 PCI_ANY_ID, PCI_ANY_ID },
9251         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_3,
9252                 PCI_ANY_ID, PCI_ANY_ID },
9253         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_4,
9254                 PCI_ANY_ID, PCI_ANY_ID },
9255         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_1,
9256                 PCI_ANY_ID, PCI_ANY_ID },
9257         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_2,
9258                 PCI_ANY_ID, PCI_ANY_ID },
9259         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_3,
9260                 PCI_ANY_ID, PCI_ANY_ID },
9261         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_4,
9262                 PCI_ANY_ID, PCI_ANY_ID },
9263         /* Ventura, Crusader, Harpoon & Tomcat ~ 3516, 3416, 3508 & 3408*/
9264         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3508,
9265                 PCI_ANY_ID, PCI_ANY_ID },
9266         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3508_1,
9267                 PCI_ANY_ID, PCI_ANY_ID },
9268         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3408,
9269                 PCI_ANY_ID, PCI_ANY_ID },
9270         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3516,
9271                 PCI_ANY_ID, PCI_ANY_ID },
9272         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3516_1,
9273                 PCI_ANY_ID, PCI_ANY_ID },
9274         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3416,
9275                 PCI_ANY_ID, PCI_ANY_ID },
9276         {0}     /* Terminating entry */
9277 };
9278 MODULE_DEVICE_TABLE(pci, mpt3sas_pci_table);
9279
9280 static struct pci_error_handlers _mpt3sas_err_handler = {
9281         .error_detected = scsih_pci_error_detected,
9282         .mmio_enabled   = scsih_pci_mmio_enabled,
9283         .slot_reset     = scsih_pci_slot_reset,
9284         .resume         = scsih_pci_resume,
9285 };
9286
9287 static struct pci_driver mpt3sas_driver = {
9288         .name           = MPT3SAS_DRIVER_NAME,
9289         .id_table       = mpt3sas_pci_table,
9290         .probe          = _scsih_probe,
9291         .remove         = scsih_remove,
9292         .shutdown       = scsih_shutdown,
9293         .err_handler    = &_mpt3sas_err_handler,
9294 #ifdef CONFIG_PM
9295         .suspend        = scsih_suspend,
9296         .resume         = scsih_resume,
9297 #endif
9298 };
9299
9300 /**
9301  * scsih_init - main entry point for this driver.
9302  *
9303  * Returns 0 success, anything else error.
9304  */
9305 static int
9306 scsih_init(void)
9307 {
9308         mpt2_ids = 0;
9309         mpt3_ids = 0;
9310
9311         mpt3sas_base_initialize_callback_handler();
9312
9313          /* queuecommand callback hander */
9314         scsi_io_cb_idx = mpt3sas_base_register_callback_handler(_scsih_io_done);
9315
9316         /* task management callback handler */
9317         tm_cb_idx = mpt3sas_base_register_callback_handler(_scsih_tm_done);
9318
9319         /* base internal commands callback handler */
9320         base_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_base_done);
9321         port_enable_cb_idx = mpt3sas_base_register_callback_handler(
9322             mpt3sas_port_enable_done);
9323
9324         /* transport internal commands callback handler */
9325         transport_cb_idx = mpt3sas_base_register_callback_handler(
9326             mpt3sas_transport_done);
9327
9328         /* scsih internal commands callback handler */
9329         scsih_cb_idx = mpt3sas_base_register_callback_handler(_scsih_done);
9330
9331         /* configuration page API internal commands callback handler */
9332         config_cb_idx = mpt3sas_base_register_callback_handler(
9333             mpt3sas_config_done);
9334
9335         /* ctl module callback handler */
9336         ctl_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_ctl_done);
9337
9338         tm_tr_cb_idx = mpt3sas_base_register_callback_handler(
9339             _scsih_tm_tr_complete);
9340
9341         tm_tr_volume_cb_idx = mpt3sas_base_register_callback_handler(
9342             _scsih_tm_volume_tr_complete);
9343
9344         tm_sas_control_cb_idx = mpt3sas_base_register_callback_handler(
9345             _scsih_sas_control_complete);
9346
9347         return 0;
9348 }
9349
9350 /**
9351  * scsih_exit - exit point for this driver (when it is a module).
9352  *
9353  * Returns 0 success, anything else error.
9354  */
9355 static void
9356 scsih_exit(void)
9357 {
9358
9359         mpt3sas_base_release_callback_handler(scsi_io_cb_idx);
9360         mpt3sas_base_release_callback_handler(tm_cb_idx);
9361         mpt3sas_base_release_callback_handler(base_cb_idx);
9362         mpt3sas_base_release_callback_handler(port_enable_cb_idx);
9363         mpt3sas_base_release_callback_handler(transport_cb_idx);
9364         mpt3sas_base_release_callback_handler(scsih_cb_idx);
9365         mpt3sas_base_release_callback_handler(config_cb_idx);
9366         mpt3sas_base_release_callback_handler(ctl_cb_idx);
9367
9368         mpt3sas_base_release_callback_handler(tm_tr_cb_idx);
9369         mpt3sas_base_release_callback_handler(tm_tr_volume_cb_idx);
9370         mpt3sas_base_release_callback_handler(tm_sas_control_cb_idx);
9371
9372 /* raid transport support */
9373         if (hbas_to_enumerate != 1)
9374                 raid_class_release(mpt3sas_raid_template);
9375         if (hbas_to_enumerate != 2)
9376                 raid_class_release(mpt2sas_raid_template);
9377         sas_release_transport(mpt3sas_transport_template);
9378 }
9379
9380 /**
9381  * _mpt3sas_init - main entry point for this driver.
9382  *
9383  * Returns 0 success, anything else error.
9384  */
9385 static int __init
9386 _mpt3sas_init(void)
9387 {
9388         int error;
9389
9390         pr_info("%s version %s loaded\n", MPT3SAS_DRIVER_NAME,
9391                                         MPT3SAS_DRIVER_VERSION);
9392
9393         mpt3sas_transport_template =
9394             sas_attach_transport(&mpt3sas_transport_functions);
9395         if (!mpt3sas_transport_template)
9396                 return -ENODEV;
9397
9398         /* No need attach mpt3sas raid functions template
9399          * if hbas_to_enumarate value is one.
9400          */
9401         if (hbas_to_enumerate != 1) {
9402                 mpt3sas_raid_template =
9403                                 raid_class_attach(&mpt3sas_raid_functions);
9404                 if (!mpt3sas_raid_template) {
9405                         sas_release_transport(mpt3sas_transport_template);
9406                         return -ENODEV;
9407                 }
9408         }
9409
9410         /* No need to attach mpt2sas raid functions template
9411          * if hbas_to_enumarate value is two
9412          */
9413         if (hbas_to_enumerate != 2) {
9414                 mpt2sas_raid_template =
9415                                 raid_class_attach(&mpt2sas_raid_functions);
9416                 if (!mpt2sas_raid_template) {
9417                         sas_release_transport(mpt3sas_transport_template);
9418                         return -ENODEV;
9419                 }
9420         }
9421
9422         error = scsih_init();
9423         if (error) {
9424                 scsih_exit();
9425                 return error;
9426         }
9427
9428         mpt3sas_ctl_init(hbas_to_enumerate);
9429
9430         error = pci_register_driver(&mpt3sas_driver);
9431         if (error)
9432                 scsih_exit();
9433
9434         return error;
9435 }
9436
9437 /**
9438  * _mpt3sas_exit - exit point for this driver (when it is a module).
9439  *
9440  */
9441 static void __exit
9442 _mpt3sas_exit(void)
9443 {
9444         pr_info("mpt3sas version %s unloading\n",
9445                                 MPT3SAS_DRIVER_VERSION);
9446
9447         pci_unregister_driver(&mpt3sas_driver);
9448
9449         mpt3sas_ctl_exit(hbas_to_enumerate);
9450
9451         scsih_exit();
9452 }
9453
9454 module_init(_mpt3sas_init);
9455 module_exit(_mpt3sas_exit);