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             ioc->remove_host) {
2476                 sdev_printk(KERN_INFO, scmd->device,
2477                         "device been deleted! scmd(%p)\n", scmd);
2478                 scmd->result = DID_NO_CONNECT << 16;
2479                 scmd->scsi_done(scmd);
2480                 r = SUCCESS;
2481                 goto out;
2482         }
2483
2484         /* search for the command */
2485         smid = _scsih_scsi_lookup_find_by_scmd(ioc, scmd);
2486         if (!smid) {
2487                 scmd->result = DID_RESET << 16;
2488                 r = SUCCESS;
2489                 goto out;
2490         }
2491
2492         /* for hidden raid components and volumes this is not supported */
2493         if (sas_device_priv_data->sas_target->flags &
2494             MPT_TARGET_FLAGS_RAID_COMPONENT ||
2495             sas_device_priv_data->sas_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2496                 scmd->result = DID_RESET << 16;
2497                 r = FAILED;
2498                 goto out;
2499         }
2500
2501         mpt3sas_halt_firmware(ioc);
2502
2503         handle = sas_device_priv_data->sas_target->handle;
2504         r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2505             scmd->device->id, scmd->device->lun,
2506             MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid, 30);
2507
2508  out:
2509         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
2510             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2511         return r;
2512 }
2513
2514 /**
2515  * scsih_dev_reset - eh threads main device reset routine
2516  * @scmd: pointer to scsi command object
2517  *
2518  * Returns SUCCESS if command aborted else FAILED
2519  */
2520 static int
2521 scsih_dev_reset(struct scsi_cmnd *scmd)
2522 {
2523         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2524         struct MPT3SAS_DEVICE *sas_device_priv_data;
2525         struct _sas_device *sas_device = NULL;
2526         u16     handle;
2527         int r;
2528
2529         struct scsi_target *starget = scmd->device->sdev_target;
2530         struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2531
2532         sdev_printk(KERN_INFO, scmd->device,
2533                 "attempting device reset! scmd(%p)\n", scmd);
2534         _scsih_tm_display_info(ioc, scmd);
2535
2536         sas_device_priv_data = scmd->device->hostdata;
2537         if (!sas_device_priv_data || !sas_device_priv_data->sas_target ||
2538             ioc->remove_host) {
2539                 sdev_printk(KERN_INFO, scmd->device,
2540                         "device been deleted! scmd(%p)\n", scmd);
2541                 scmd->result = DID_NO_CONNECT << 16;
2542                 scmd->scsi_done(scmd);
2543                 r = SUCCESS;
2544                 goto out;
2545         }
2546
2547         /* for hidden raid components obtain the volume_handle */
2548         handle = 0;
2549         if (sas_device_priv_data->sas_target->flags &
2550             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2551                 sas_device = mpt3sas_get_sdev_from_target(ioc,
2552                                 target_priv_data);
2553                 if (sas_device)
2554                         handle = sas_device->volume_handle;
2555         } else
2556                 handle = sas_device_priv_data->sas_target->handle;
2557
2558         if (!handle) {
2559                 scmd->result = DID_RESET << 16;
2560                 r = FAILED;
2561                 goto out;
2562         }
2563
2564         r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2565             scmd->device->id, scmd->device->lun,
2566             MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 30);
2567
2568  out:
2569         sdev_printk(KERN_INFO, scmd->device, "device reset: %s scmd(%p)\n",
2570             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2571
2572         if (sas_device)
2573                 sas_device_put(sas_device);
2574
2575         return r;
2576 }
2577
2578 /**
2579  * scsih_target_reset - eh threads main target reset routine
2580  * @scmd: pointer to scsi command object
2581  *
2582  * Returns SUCCESS if command aborted else FAILED
2583  */
2584 static int
2585 scsih_target_reset(struct scsi_cmnd *scmd)
2586 {
2587         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2588         struct MPT3SAS_DEVICE *sas_device_priv_data;
2589         struct _sas_device *sas_device = NULL;
2590         u16     handle;
2591         int r;
2592         struct scsi_target *starget = scmd->device->sdev_target;
2593         struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2594
2595         starget_printk(KERN_INFO, starget, "attempting target reset! scmd(%p)\n",
2596                 scmd);
2597         _scsih_tm_display_info(ioc, scmd);
2598
2599         sas_device_priv_data = scmd->device->hostdata;
2600         if (!sas_device_priv_data || !sas_device_priv_data->sas_target ||
2601             ioc->remove_host) {
2602                 starget_printk(KERN_INFO, starget, "target been deleted! scmd(%p)\n",
2603                         scmd);
2604                 scmd->result = DID_NO_CONNECT << 16;
2605                 scmd->scsi_done(scmd);
2606                 r = SUCCESS;
2607                 goto out;
2608         }
2609
2610         /* for hidden raid components obtain the volume_handle */
2611         handle = 0;
2612         if (sas_device_priv_data->sas_target->flags &
2613             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2614                 sas_device = mpt3sas_get_sdev_from_target(ioc,
2615                                 target_priv_data);
2616                 if (sas_device)
2617                         handle = sas_device->volume_handle;
2618         } else
2619                 handle = sas_device_priv_data->sas_target->handle;
2620
2621         if (!handle) {
2622                 scmd->result = DID_RESET << 16;
2623                 r = FAILED;
2624                 goto out;
2625         }
2626
2627         r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2628             scmd->device->id, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
2629             30);
2630
2631  out:
2632         starget_printk(KERN_INFO, starget, "target reset: %s scmd(%p)\n",
2633             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2634
2635         if (sas_device)
2636                 sas_device_put(sas_device);
2637
2638         return r;
2639 }
2640
2641
2642 /**
2643  * scsih_host_reset - eh threads main host reset routine
2644  * @scmd: pointer to scsi command object
2645  *
2646  * Returns SUCCESS if command aborted else FAILED
2647  */
2648 static int
2649 scsih_host_reset(struct scsi_cmnd *scmd)
2650 {
2651         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2652         int r, retval;
2653
2654         pr_info(MPT3SAS_FMT "attempting host reset! scmd(%p)\n",
2655             ioc->name, scmd);
2656         scsi_print_command(scmd);
2657
2658         if (ioc->is_driver_loading || ioc->remove_host) {
2659                 pr_info(MPT3SAS_FMT "Blocking the host reset\n",
2660                     ioc->name);
2661                 r = FAILED;
2662                 goto out;
2663         }
2664
2665         retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2666         r = (retval < 0) ? FAILED : SUCCESS;
2667 out:
2668         pr_info(MPT3SAS_FMT "host reset: %s scmd(%p)\n",
2669             ioc->name, ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2670
2671         return r;
2672 }
2673
2674 /**
2675  * _scsih_fw_event_add - insert and queue up fw_event
2676  * @ioc: per adapter object
2677  * @fw_event: object describing the event
2678  * Context: This function will acquire ioc->fw_event_lock.
2679  *
2680  * This adds the firmware event object into link list, then queues it up to
2681  * be processed from user context.
2682  *
2683  * Return nothing.
2684  */
2685 static void
2686 _scsih_fw_event_add(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
2687 {
2688         unsigned long flags;
2689
2690         if (ioc->firmware_event_thread == NULL)
2691                 return;
2692
2693         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2694         fw_event_work_get(fw_event);
2695         INIT_LIST_HEAD(&fw_event->list);
2696         list_add_tail(&fw_event->list, &ioc->fw_event_list);
2697         INIT_WORK(&fw_event->work, _firmware_event_work);
2698         fw_event_work_get(fw_event);
2699         queue_work(ioc->firmware_event_thread, &fw_event->work);
2700         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2701 }
2702
2703 /**
2704  * _scsih_fw_event_del_from_list - delete fw_event from the list
2705  * @ioc: per adapter object
2706  * @fw_event: object describing the event
2707  * Context: This function will acquire ioc->fw_event_lock.
2708  *
2709  * If the fw_event is on the fw_event_list, remove it and do a put.
2710  *
2711  * Return nothing.
2712  */
2713 static void
2714 _scsih_fw_event_del_from_list(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work
2715         *fw_event)
2716 {
2717         unsigned long flags;
2718
2719         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2720         if (!list_empty(&fw_event->list)) {
2721                 list_del_init(&fw_event->list);
2722                 fw_event_work_put(fw_event);
2723         }
2724         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2725 }
2726
2727
2728  /**
2729  * mpt3sas_send_trigger_data_event - send event for processing trigger data
2730  * @ioc: per adapter object
2731  * @event_data: trigger event data
2732  *
2733  * Return nothing.
2734  */
2735 void
2736 mpt3sas_send_trigger_data_event(struct MPT3SAS_ADAPTER *ioc,
2737         struct SL_WH_TRIGGERS_EVENT_DATA_T *event_data)
2738 {
2739         struct fw_event_work *fw_event;
2740         u16 sz;
2741
2742         if (ioc->is_driver_loading)
2743                 return;
2744         sz = sizeof(*event_data);
2745         fw_event = alloc_fw_event_work(sz);
2746         if (!fw_event)
2747                 return;
2748         fw_event->event = MPT3SAS_PROCESS_TRIGGER_DIAG;
2749         fw_event->ioc = ioc;
2750         memcpy(fw_event->event_data, event_data, sizeof(*event_data));
2751         _scsih_fw_event_add(ioc, fw_event);
2752         fw_event_work_put(fw_event);
2753 }
2754
2755 /**
2756  * _scsih_error_recovery_delete_devices - remove devices not responding
2757  * @ioc: per adapter object
2758  *
2759  * Return nothing.
2760  */
2761 static void
2762 _scsih_error_recovery_delete_devices(struct MPT3SAS_ADAPTER *ioc)
2763 {
2764         struct fw_event_work *fw_event;
2765
2766         if (ioc->is_driver_loading)
2767                 return;
2768         fw_event = alloc_fw_event_work(0);
2769         if (!fw_event)
2770                 return;
2771         fw_event->event = MPT3SAS_REMOVE_UNRESPONDING_DEVICES;
2772         fw_event->ioc = ioc;
2773         _scsih_fw_event_add(ioc, fw_event);
2774         fw_event_work_put(fw_event);
2775 }
2776
2777 /**
2778  * mpt3sas_port_enable_complete - port enable completed (fake event)
2779  * @ioc: per adapter object
2780  *
2781  * Return nothing.
2782  */
2783 void
2784 mpt3sas_port_enable_complete(struct MPT3SAS_ADAPTER *ioc)
2785 {
2786         struct fw_event_work *fw_event;
2787
2788         fw_event = alloc_fw_event_work(0);
2789         if (!fw_event)
2790                 return;
2791         fw_event->event = MPT3SAS_PORT_ENABLE_COMPLETE;
2792         fw_event->ioc = ioc;
2793         _scsih_fw_event_add(ioc, fw_event);
2794         fw_event_work_put(fw_event);
2795 }
2796
2797 static struct fw_event_work *dequeue_next_fw_event(struct MPT3SAS_ADAPTER *ioc)
2798 {
2799         unsigned long flags;
2800         struct fw_event_work *fw_event = NULL;
2801
2802         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2803         if (!list_empty(&ioc->fw_event_list)) {
2804                 fw_event = list_first_entry(&ioc->fw_event_list,
2805                                 struct fw_event_work, list);
2806                 list_del_init(&fw_event->list);
2807         }
2808         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2809
2810         return fw_event;
2811 }
2812
2813 /**
2814  * _scsih_fw_event_cleanup_queue - cleanup event queue
2815  * @ioc: per adapter object
2816  *
2817  * Walk the firmware event queue, either killing timers, or waiting
2818  * for outstanding events to complete
2819  *
2820  * Return nothing.
2821  */
2822 static void
2823 _scsih_fw_event_cleanup_queue(struct MPT3SAS_ADAPTER *ioc)
2824 {
2825         struct fw_event_work *fw_event;
2826
2827         if (list_empty(&ioc->fw_event_list) ||
2828              !ioc->firmware_event_thread || in_interrupt())
2829                 return;
2830
2831         while ((fw_event = dequeue_next_fw_event(ioc))) {
2832                 /*
2833                  * Wait on the fw_event to complete. If this returns 1, then
2834                  * the event was never executed, and we need a put for the
2835                  * reference the work had on the fw_event.
2836                  *
2837                  * If it did execute, we wait for it to finish, and the put will
2838                  * happen from _firmware_event_work()
2839                  */
2840                 if (cancel_work_sync(&fw_event->work))
2841                         fw_event_work_put(fw_event);
2842
2843                 fw_event_work_put(fw_event);
2844         }
2845 }
2846
2847 /**
2848  * _scsih_internal_device_block - block the sdev device
2849  * @sdev: per device object
2850  * @sas_device_priv_data : per device driver private data
2851  *
2852  * make sure device is blocked without error, if not
2853  * print an error
2854  */
2855 static void
2856 _scsih_internal_device_block(struct scsi_device *sdev,
2857                         struct MPT3SAS_DEVICE *sas_device_priv_data)
2858 {
2859         int r = 0;
2860
2861         sdev_printk(KERN_INFO, sdev, "device_block, handle(0x%04x)\n",
2862             sas_device_priv_data->sas_target->handle);
2863         sas_device_priv_data->block = 1;
2864
2865         r = scsi_internal_device_block_nowait(sdev);
2866         if (r == -EINVAL)
2867                 sdev_printk(KERN_WARNING, sdev,
2868                     "device_block failed with return(%d) for handle(0x%04x)\n",
2869                     r, sas_device_priv_data->sas_target->handle);
2870 }
2871
2872 /**
2873  * _scsih_internal_device_unblock - unblock the sdev device
2874  * @sdev: per device object
2875  * @sas_device_priv_data : per device driver private data
2876  * make sure device is unblocked without error, if not retry
2877  * by blocking and then unblocking
2878  */
2879
2880 static void
2881 _scsih_internal_device_unblock(struct scsi_device *sdev,
2882                         struct MPT3SAS_DEVICE *sas_device_priv_data)
2883 {
2884         int r = 0;
2885
2886         sdev_printk(KERN_WARNING, sdev, "device_unblock and setting to running, "
2887             "handle(0x%04x)\n", sas_device_priv_data->sas_target->handle);
2888         sas_device_priv_data->block = 0;
2889         r = scsi_internal_device_unblock_nowait(sdev, SDEV_RUNNING);
2890         if (r == -EINVAL) {
2891                 /* The device has been set to SDEV_RUNNING by SD layer during
2892                  * device addition but the request queue is still stopped by
2893                  * our earlier block call. We need to perform a block again
2894                  * to get the device to SDEV_BLOCK and then to SDEV_RUNNING */
2895
2896                 sdev_printk(KERN_WARNING, sdev,
2897                     "device_unblock failed with return(%d) for handle(0x%04x) "
2898                     "performing a block followed by an unblock\n",
2899                     r, sas_device_priv_data->sas_target->handle);
2900                 sas_device_priv_data->block = 1;
2901                 r = scsi_internal_device_block_nowait(sdev);
2902                 if (r)
2903                         sdev_printk(KERN_WARNING, sdev, "retried device_block "
2904                             "failed with return(%d) for handle(0x%04x)\n",
2905                             r, sas_device_priv_data->sas_target->handle);
2906
2907                 sas_device_priv_data->block = 0;
2908                 r = scsi_internal_device_unblock_nowait(sdev, SDEV_RUNNING);
2909                 if (r)
2910                         sdev_printk(KERN_WARNING, sdev, "retried device_unblock"
2911                             " failed with return(%d) for handle(0x%04x)\n",
2912                             r, sas_device_priv_data->sas_target->handle);
2913         }
2914 }
2915
2916 /**
2917  * _scsih_ublock_io_all_device - unblock every device
2918  * @ioc: per adapter object
2919  *
2920  * change the device state from block to running
2921  */
2922 static void
2923 _scsih_ublock_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2924 {
2925         struct MPT3SAS_DEVICE *sas_device_priv_data;
2926         struct scsi_device *sdev;
2927
2928         shost_for_each_device(sdev, ioc->shost) {
2929                 sas_device_priv_data = sdev->hostdata;
2930                 if (!sas_device_priv_data)
2931                         continue;
2932                 if (!sas_device_priv_data->block)
2933                         continue;
2934
2935                 dewtprintk(ioc, sdev_printk(KERN_INFO, sdev,
2936                         "device_running, handle(0x%04x)\n",
2937                     sas_device_priv_data->sas_target->handle));
2938                 _scsih_internal_device_unblock(sdev, sas_device_priv_data);
2939         }
2940 }
2941
2942
2943 /**
2944  * _scsih_ublock_io_device - prepare device to be deleted
2945  * @ioc: per adapter object
2946  * @sas_addr: sas address
2947  *
2948  * unblock then put device in offline state
2949  */
2950 static void
2951 _scsih_ublock_io_device(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
2952 {
2953         struct MPT3SAS_DEVICE *sas_device_priv_data;
2954         struct scsi_device *sdev;
2955
2956         shost_for_each_device(sdev, ioc->shost) {
2957                 sas_device_priv_data = sdev->hostdata;
2958                 if (!sas_device_priv_data)
2959                         continue;
2960                 if (sas_device_priv_data->sas_target->sas_address
2961                     != sas_address)
2962                         continue;
2963                 if (sas_device_priv_data->block)
2964                         _scsih_internal_device_unblock(sdev,
2965                                 sas_device_priv_data);
2966         }
2967 }
2968
2969 /**
2970  * _scsih_block_io_all_device - set the device state to SDEV_BLOCK
2971  * @ioc: per adapter object
2972  * @handle: device handle
2973  *
2974  * During device pull we need to appropriately set the sdev state.
2975  */
2976 static void
2977 _scsih_block_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2978 {
2979         struct MPT3SAS_DEVICE *sas_device_priv_data;
2980         struct scsi_device *sdev;
2981
2982         shost_for_each_device(sdev, ioc->shost) {
2983                 sas_device_priv_data = sdev->hostdata;
2984                 if (!sas_device_priv_data)
2985                         continue;
2986                 if (sas_device_priv_data->block)
2987                         continue;
2988                 if (sas_device_priv_data->ignore_delay_remove) {
2989                         sdev_printk(KERN_INFO, sdev,
2990                         "%s skip device_block for SES handle(0x%04x)\n",
2991                         __func__, sas_device_priv_data->sas_target->handle);
2992                         continue;
2993                 }
2994                 _scsih_internal_device_block(sdev, sas_device_priv_data);
2995         }
2996 }
2997
2998 /**
2999  * _scsih_block_io_device - set the device state to SDEV_BLOCK
3000  * @ioc: per adapter object
3001  * @handle: device handle
3002  *
3003  * During device pull we need to appropriately set the sdev state.
3004  */
3005 static void
3006 _scsih_block_io_device(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3007 {
3008         struct MPT3SAS_DEVICE *sas_device_priv_data;
3009         struct scsi_device *sdev;
3010         struct _sas_device *sas_device;
3011
3012         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
3013         if (!sas_device)
3014                 return;
3015
3016         shost_for_each_device(sdev, ioc->shost) {
3017                 sas_device_priv_data = sdev->hostdata;
3018                 if (!sas_device_priv_data)
3019                         continue;
3020                 if (sas_device_priv_data->sas_target->handle != handle)
3021                         continue;
3022                 if (sas_device_priv_data->block)
3023                         continue;
3024                 if (sas_device->pend_sas_rphy_add)
3025                         continue;
3026                 if (sas_device_priv_data->ignore_delay_remove) {
3027                         sdev_printk(KERN_INFO, sdev,
3028                         "%s skip device_block for SES handle(0x%04x)\n",
3029                         __func__, sas_device_priv_data->sas_target->handle);
3030                         continue;
3031                 }
3032                 _scsih_internal_device_block(sdev, sas_device_priv_data);
3033         }
3034
3035         sas_device_put(sas_device);
3036 }
3037
3038 /**
3039  * _scsih_block_io_to_children_attached_to_ex
3040  * @ioc: per adapter object
3041  * @sas_expander: the sas_device object
3042  *
3043  * This routine set sdev state to SDEV_BLOCK for all devices
3044  * attached to this expander. This function called when expander is
3045  * pulled.
3046  */
3047 static void
3048 _scsih_block_io_to_children_attached_to_ex(struct MPT3SAS_ADAPTER *ioc,
3049         struct _sas_node *sas_expander)
3050 {
3051         struct _sas_port *mpt3sas_port;
3052         struct _sas_device *sas_device;
3053         struct _sas_node *expander_sibling;
3054         unsigned long flags;
3055
3056         if (!sas_expander)
3057                 return;
3058
3059         list_for_each_entry(mpt3sas_port,
3060            &sas_expander->sas_port_list, port_list) {
3061                 if (mpt3sas_port->remote_identify.device_type ==
3062                     SAS_END_DEVICE) {
3063                         spin_lock_irqsave(&ioc->sas_device_lock, flags);
3064                         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
3065                             mpt3sas_port->remote_identify.sas_address);
3066                         if (sas_device) {
3067                                 set_bit(sas_device->handle,
3068                                                 ioc->blocking_handles);
3069                                 sas_device_put(sas_device);
3070                         }
3071                         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3072                 }
3073         }
3074
3075         list_for_each_entry(mpt3sas_port,
3076            &sas_expander->sas_port_list, port_list) {
3077
3078                 if (mpt3sas_port->remote_identify.device_type ==
3079                     SAS_EDGE_EXPANDER_DEVICE ||
3080                     mpt3sas_port->remote_identify.device_type ==
3081                     SAS_FANOUT_EXPANDER_DEVICE) {
3082                         expander_sibling =
3083                             mpt3sas_scsih_expander_find_by_sas_address(
3084                             ioc, mpt3sas_port->remote_identify.sas_address);
3085                         _scsih_block_io_to_children_attached_to_ex(ioc,
3086                             expander_sibling);
3087                 }
3088         }
3089 }
3090
3091 /**
3092  * _scsih_block_io_to_children_attached_directly
3093  * @ioc: per adapter object
3094  * @event_data: topology change event data
3095  *
3096  * This routine set sdev state to SDEV_BLOCK for all devices
3097  * direct attached during device pull.
3098  */
3099 static void
3100 _scsih_block_io_to_children_attached_directly(struct MPT3SAS_ADAPTER *ioc,
3101         Mpi2EventDataSasTopologyChangeList_t *event_data)
3102 {
3103         int i;
3104         u16 handle;
3105         u16 reason_code;
3106
3107         for (i = 0; i < event_data->NumEntries; i++) {
3108                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3109                 if (!handle)
3110                         continue;
3111                 reason_code = event_data->PHY[i].PhyStatus &
3112                     MPI2_EVENT_SAS_TOPO_RC_MASK;
3113                 if (reason_code == MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING)
3114                         _scsih_block_io_device(ioc, handle);
3115         }
3116 }
3117
3118 /**
3119  * _scsih_tm_tr_send - send task management request
3120  * @ioc: per adapter object
3121  * @handle: device handle
3122  * Context: interrupt time.
3123  *
3124  * This code is to initiate the device removal handshake protocol
3125  * with controller firmware.  This function will issue target reset
3126  * using high priority request queue.  It will send a sas iounit
3127  * control request (MPI2_SAS_OP_REMOVE_DEVICE) from this completion.
3128  *
3129  * This is designed to send muliple task management request at the same
3130  * time to the fifo. If the fifo is full, we will append the request,
3131  * and process it in a future completion.
3132  */
3133 static void
3134 _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3135 {
3136         Mpi2SCSITaskManagementRequest_t *mpi_request;
3137         u16 smid;
3138         struct _sas_device *sas_device = NULL;
3139         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
3140         u64 sas_address = 0;
3141         unsigned long flags;
3142         struct _tr_list *delayed_tr;
3143         u32 ioc_state;
3144
3145         if (ioc->remove_host) {
3146                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3147                         "%s: host has been removed: handle(0x%04x)\n",
3148                         __func__, ioc->name, handle));
3149                 return;
3150         } else if (ioc->pci_error_recovery) {
3151                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3152                         "%s: host in pci error recovery: handle(0x%04x)\n",
3153                         __func__, ioc->name,
3154                     handle));
3155                 return;
3156         }
3157         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3158         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3159                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3160                         "%s: host is not operational: handle(0x%04x)\n",
3161                         __func__, ioc->name,
3162                    handle));
3163                 return;
3164         }
3165
3166         /* if PD, then return */
3167         if (test_bit(handle, ioc->pd_handles))
3168                 return;
3169
3170         clear_bit(handle, ioc->pend_os_device_add);
3171
3172         spin_lock_irqsave(&ioc->sas_device_lock, flags);
3173         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
3174         if (sas_device && sas_device->starget &&
3175             sas_device->starget->hostdata) {
3176                 sas_target_priv_data = sas_device->starget->hostdata;
3177                 sas_target_priv_data->deleted = 1;
3178                 sas_address = sas_device->sas_address;
3179         }
3180         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3181
3182         if (sas_target_priv_data) {
3183                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3184                         "setting delete flag: handle(0x%04x), sas_addr(0x%016llx)\n",
3185                         ioc->name, handle,
3186                     (unsigned long long)sas_address));
3187                 if (sas_device->enclosure_handle != 0)
3188                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3189                          "setting delete flag:enclosure logical id(0x%016llx),"
3190                          " slot(%d)\n", ioc->name, (unsigned long long)
3191                           sas_device->enclosure_logical_id,
3192                           sas_device->slot));
3193                 if (sas_device->connector_name[0] != '\0')
3194                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3195                          "setting delete flag: enclosure level(0x%04x),"
3196                          " connector name( %s)\n", ioc->name,
3197                           sas_device->enclosure_level,
3198                           sas_device->connector_name));
3199                 _scsih_ublock_io_device(ioc, sas_address);
3200                 sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
3201         }
3202
3203         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_cb_idx);
3204         if (!smid) {
3205                 delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3206                 if (!delayed_tr)
3207                         goto out;
3208                 INIT_LIST_HEAD(&delayed_tr->list);
3209                 delayed_tr->handle = handle;
3210                 list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3211                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3212                     "DELAYED:tr:handle(0x%04x), (open)\n",
3213                     ioc->name, handle));
3214                 goto out;
3215         }
3216
3217         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3218                 "tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3219                 ioc->name, handle, smid,
3220             ioc->tm_tr_cb_idx));
3221         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3222         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3223         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3224         mpi_request->DevHandle = cpu_to_le16(handle);
3225         mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3226         set_bit(handle, ioc->device_remove_in_progress);
3227         ioc->put_smid_hi_priority(ioc, smid, 0);
3228         mpt3sas_trigger_master(ioc, MASTER_TRIGGER_DEVICE_REMOVAL);
3229
3230 out:
3231         if (sas_device)
3232                 sas_device_put(sas_device);
3233 }
3234
3235 /**
3236  * _scsih_tm_tr_complete -
3237  * @ioc: per adapter object
3238  * @smid: system request message index
3239  * @msix_index: MSIX table index supplied by the OS
3240  * @reply: reply message frame(lower 32bit addr)
3241  * Context: interrupt time.
3242  *
3243  * This is the target reset completion routine.
3244  * This code is part of the code to initiate the device removal
3245  * handshake protocol with controller firmware.
3246  * It will send a sas iounit control request (MPI2_SAS_OP_REMOVE_DEVICE)
3247  *
3248  * Return 1 meaning mf should be freed from _base_interrupt
3249  *        0 means the mf is freed from this function.
3250  */
3251 static u8
3252 _scsih_tm_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3253         u32 reply)
3254 {
3255         u16 handle;
3256         Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3257         Mpi2SCSITaskManagementReply_t *mpi_reply =
3258             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3259         Mpi2SasIoUnitControlRequest_t *mpi_request;
3260         u16 smid_sas_ctrl;
3261         u32 ioc_state;
3262         struct _sc_list *delayed_sc;
3263
3264         if (ioc->remove_host) {
3265                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3266                         "%s: host has been removed\n", __func__, ioc->name));
3267                 return 1;
3268         } else if (ioc->pci_error_recovery) {
3269                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3270                         "%s: host in pci error recovery\n", __func__,
3271                         ioc->name));
3272                 return 1;
3273         }
3274         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3275         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3276                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3277                         "%s: host is not operational\n", __func__, ioc->name));
3278                 return 1;
3279         }
3280         if (unlikely(!mpi_reply)) {
3281                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3282                     ioc->name, __FILE__, __LINE__, __func__);
3283                 return 1;
3284         }
3285         mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3286         handle = le16_to_cpu(mpi_request_tm->DevHandle);
3287         if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3288                 dewtprintk(ioc, pr_err(MPT3SAS_FMT
3289                         "spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3290                         ioc->name, handle,
3291                     le16_to_cpu(mpi_reply->DevHandle), smid));
3292                 return 0;
3293         }
3294
3295         mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
3296         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3297             "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3298             "loginfo(0x%08x), completed(%d)\n", ioc->name,
3299             handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3300             le32_to_cpu(mpi_reply->IOCLogInfo),
3301             le32_to_cpu(mpi_reply->TerminationCount)));
3302
3303         smid_sas_ctrl = mpt3sas_base_get_smid(ioc, ioc->tm_sas_control_cb_idx);
3304         if (!smid_sas_ctrl) {
3305                 delayed_sc = kzalloc(sizeof(*delayed_sc), GFP_ATOMIC);
3306                 if (!delayed_sc)
3307                         return _scsih_check_for_pending_tm(ioc, smid);
3308                 INIT_LIST_HEAD(&delayed_sc->list);
3309                 delayed_sc->handle = mpi_request_tm->DevHandle;
3310                 list_add_tail(&delayed_sc->list, &ioc->delayed_sc_list);
3311                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3312                     "DELAYED:sc:handle(0x%04x), (open)\n",
3313                     ioc->name, handle));
3314                 return _scsih_check_for_pending_tm(ioc, smid);
3315         }
3316
3317         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3318                 "sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3319                 ioc->name, handle, smid_sas_ctrl,
3320             ioc->tm_sas_control_cb_idx));
3321         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid_sas_ctrl);
3322         memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3323         mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3324         mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3325         mpi_request->DevHandle = mpi_request_tm->DevHandle;
3326         ioc->put_smid_default(ioc, smid_sas_ctrl);
3327
3328         return _scsih_check_for_pending_tm(ioc, smid);
3329 }
3330
3331
3332 /**
3333  * _scsih_sas_control_complete - completion routine
3334  * @ioc: per adapter object
3335  * @smid: system request message index
3336  * @msix_index: MSIX table index supplied by the OS
3337  * @reply: reply message frame(lower 32bit addr)
3338  * Context: interrupt time.
3339  *
3340  * This is the sas iounit control completion routine.
3341  * This code is part of the code to initiate the device removal
3342  * handshake protocol with controller firmware.
3343  *
3344  * Return 1 meaning mf should be freed from _base_interrupt
3345  *        0 means the mf is freed from this function.
3346  */
3347 static u8
3348 _scsih_sas_control_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3349         u8 msix_index, u32 reply)
3350 {
3351         Mpi2SasIoUnitControlReply_t *mpi_reply =
3352             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3353
3354         if (likely(mpi_reply)) {
3355                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3356                 "sc_complete:handle(0x%04x), (open) "
3357                 "smid(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
3358                 ioc->name, le16_to_cpu(mpi_reply->DevHandle), smid,
3359                 le16_to_cpu(mpi_reply->IOCStatus),
3360                 le32_to_cpu(mpi_reply->IOCLogInfo)));
3361                 if (le16_to_cpu(mpi_reply->IOCStatus) ==
3362                      MPI2_IOCSTATUS_SUCCESS) {
3363                         clear_bit(le16_to_cpu(mpi_reply->DevHandle),
3364                             ioc->device_remove_in_progress);
3365                 }
3366         } else {
3367                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3368                     ioc->name, __FILE__, __LINE__, __func__);
3369         }
3370         return mpt3sas_check_for_pending_internal_cmds(ioc, smid);
3371 }
3372
3373 /**
3374  * _scsih_tm_tr_volume_send - send target reset request for volumes
3375  * @ioc: per adapter object
3376  * @handle: device handle
3377  * Context: interrupt time.
3378  *
3379  * This is designed to send muliple task management request at the same
3380  * time to the fifo. If the fifo is full, we will append the request,
3381  * and process it in a future completion.
3382  */
3383 static void
3384 _scsih_tm_tr_volume_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3385 {
3386         Mpi2SCSITaskManagementRequest_t *mpi_request;
3387         u16 smid;
3388         struct _tr_list *delayed_tr;
3389
3390         if (ioc->shost_recovery || ioc->remove_host ||
3391             ioc->pci_error_recovery) {
3392                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3393                         "%s: host reset in progress!\n",
3394                         __func__, ioc->name));
3395                 return;
3396         }
3397
3398         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_volume_cb_idx);
3399         if (!smid) {
3400                 delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3401                 if (!delayed_tr)
3402                         return;
3403                 INIT_LIST_HEAD(&delayed_tr->list);
3404                 delayed_tr->handle = handle;
3405                 list_add_tail(&delayed_tr->list, &ioc->delayed_tr_volume_list);
3406                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3407                     "DELAYED:tr:handle(0x%04x), (open)\n",
3408                     ioc->name, handle));
3409                 return;
3410         }
3411
3412         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3413                 "tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3414                 ioc->name, handle, smid,
3415             ioc->tm_tr_volume_cb_idx));
3416         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3417         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3418         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3419         mpi_request->DevHandle = cpu_to_le16(handle);
3420         mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3421         ioc->put_smid_hi_priority(ioc, smid, 0);
3422 }
3423
3424 /**
3425  * _scsih_tm_volume_tr_complete - target reset completion
3426  * @ioc: per adapter object
3427  * @smid: system request message index
3428  * @msix_index: MSIX table index supplied by the OS
3429  * @reply: reply message frame(lower 32bit addr)
3430  * Context: interrupt time.
3431  *
3432  * Return 1 meaning mf should be freed from _base_interrupt
3433  *        0 means the mf is freed from this function.
3434  */
3435 static u8
3436 _scsih_tm_volume_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3437         u8 msix_index, u32 reply)
3438 {
3439         u16 handle;
3440         Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3441         Mpi2SCSITaskManagementReply_t *mpi_reply =
3442             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3443
3444         if (ioc->shost_recovery || ioc->remove_host ||
3445             ioc->pci_error_recovery) {
3446                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3447                         "%s: host reset in progress!\n",
3448                         __func__, ioc->name));
3449                 return 1;
3450         }
3451         if (unlikely(!mpi_reply)) {
3452                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3453                     ioc->name, __FILE__, __LINE__, __func__);
3454                 return 1;
3455         }
3456
3457         mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3458         handle = le16_to_cpu(mpi_request_tm->DevHandle);
3459         if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3460                 dewtprintk(ioc, pr_err(MPT3SAS_FMT
3461                         "spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3462                         ioc->name, handle,
3463                     le16_to_cpu(mpi_reply->DevHandle), smid));
3464                 return 0;
3465         }
3466
3467         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3468             "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3469             "loginfo(0x%08x), completed(%d)\n", ioc->name,
3470             handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3471             le32_to_cpu(mpi_reply->IOCLogInfo),
3472             le32_to_cpu(mpi_reply->TerminationCount)));
3473
3474         return _scsih_check_for_pending_tm(ioc, smid);
3475 }
3476
3477 /**
3478  * _scsih_issue_delayed_event_ack - issue delayed Event ACK messages
3479  * @ioc: per adapter object
3480  * @smid: system request message index
3481  * @event: Event ID
3482  * @event_context: used to track events uniquely
3483  *
3484  * Context - processed in interrupt context.
3485  */
3486 static void
3487 _scsih_issue_delayed_event_ack(struct MPT3SAS_ADAPTER *ioc, u16 smid, u16 event,
3488                                 u32 event_context)
3489 {
3490         Mpi2EventAckRequest_t *ack_request;
3491         int i = smid - ioc->internal_smid;
3492         unsigned long flags;
3493
3494         /* Without releasing the smid just update the
3495          * call back index and reuse the same smid for
3496          * processing this delayed request
3497          */
3498         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3499         ioc->internal_lookup[i].cb_idx = ioc->base_cb_idx;
3500         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3501
3502         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3503                 "EVENT ACK: event(0x%04x), smid(%d), cb(%d)\n",
3504                 ioc->name, le16_to_cpu(event), smid,
3505                 ioc->base_cb_idx));
3506         ack_request = mpt3sas_base_get_msg_frame(ioc, smid);
3507         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
3508         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
3509         ack_request->Event = event;
3510         ack_request->EventContext = event_context;
3511         ack_request->VF_ID = 0;  /* TODO */
3512         ack_request->VP_ID = 0;
3513         ioc->put_smid_default(ioc, smid);
3514 }
3515
3516 /**
3517  * _scsih_issue_delayed_sas_io_unit_ctrl - issue delayed
3518  *                              sas_io_unit_ctrl messages
3519  * @ioc: per adapter object
3520  * @smid: system request message index
3521  * @handle: device handle
3522  *
3523  * Context - processed in interrupt context.
3524  */
3525 static void
3526 _scsih_issue_delayed_sas_io_unit_ctrl(struct MPT3SAS_ADAPTER *ioc,
3527                                         u16 smid, u16 handle)
3528         {
3529                 Mpi2SasIoUnitControlRequest_t *mpi_request;
3530                 u32 ioc_state;
3531                 int i = smid - ioc->internal_smid;
3532                 unsigned long flags;
3533
3534                 if (ioc->remove_host) {
3535                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3536                             "%s: host has been removed\n",
3537                              __func__, ioc->name));
3538                         return;
3539                 } else if (ioc->pci_error_recovery) {
3540                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3541                             "%s: host in pci error recovery\n",
3542                             __func__, ioc->name));
3543                 return;
3544         }
3545         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3546         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3547                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3548                     "%s: host is not operational\n",
3549                     __func__, ioc->name));
3550                 return;
3551         }
3552
3553         /* Without releasing the smid just update the
3554          * call back index and reuse the same smid for
3555          * processing this delayed request
3556          */
3557         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3558         ioc->internal_lookup[i].cb_idx = ioc->tm_sas_control_cb_idx;
3559         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3560
3561         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3562             "sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3563             ioc->name, le16_to_cpu(handle), smid,
3564             ioc->tm_sas_control_cb_idx));
3565         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3566         memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3567         mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3568         mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3569         mpi_request->DevHandle = handle;
3570         ioc->put_smid_default(ioc, smid);
3571 }
3572
3573 /**
3574  * _scsih_check_for_pending_internal_cmds - check for pending internal messages
3575  * @ioc: per adapter object
3576  * @smid: system request message index
3577  *
3578  * Context: Executed in interrupt context
3579  *
3580  * This will check delayed internal messages list, and process the
3581  * next request.
3582  *
3583  * Return 1 meaning mf should be freed from _base_interrupt
3584  *        0 means the mf is freed from this function.
3585  */
3586 u8
3587 mpt3sas_check_for_pending_internal_cmds(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3588 {
3589         struct _sc_list *delayed_sc;
3590         struct _event_ack_list *delayed_event_ack;
3591
3592         if (!list_empty(&ioc->delayed_event_ack_list)) {
3593                 delayed_event_ack = list_entry(ioc->delayed_event_ack_list.next,
3594                                                 struct _event_ack_list, list);
3595                 _scsih_issue_delayed_event_ack(ioc, smid,
3596                   delayed_event_ack->Event, delayed_event_ack->EventContext);
3597                 list_del(&delayed_event_ack->list);
3598                 kfree(delayed_event_ack);
3599                 return 0;
3600         }
3601
3602         if (!list_empty(&ioc->delayed_sc_list)) {
3603                 delayed_sc = list_entry(ioc->delayed_sc_list.next,
3604                                                 struct _sc_list, list);
3605                 _scsih_issue_delayed_sas_io_unit_ctrl(ioc, smid,
3606                                                  delayed_sc->handle);
3607                 list_del(&delayed_sc->list);
3608                 kfree(delayed_sc);
3609                 return 0;
3610         }
3611         return 1;
3612 }
3613
3614 /**
3615  * _scsih_check_for_pending_tm - check for pending task management
3616  * @ioc: per adapter object
3617  * @smid: system request message index
3618  *
3619  * This will check delayed target reset list, and feed the
3620  * next reqeust.
3621  *
3622  * Return 1 meaning mf should be freed from _base_interrupt
3623  *        0 means the mf is freed from this function.
3624  */
3625 static u8
3626 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3627 {
3628         struct _tr_list *delayed_tr;
3629
3630         if (!list_empty(&ioc->delayed_tr_volume_list)) {
3631                 delayed_tr = list_entry(ioc->delayed_tr_volume_list.next,
3632                     struct _tr_list, list);
3633                 mpt3sas_base_free_smid(ioc, smid);
3634                 _scsih_tm_tr_volume_send(ioc, delayed_tr->handle);
3635                 list_del(&delayed_tr->list);
3636                 kfree(delayed_tr);
3637                 return 0;
3638         }
3639
3640         if (!list_empty(&ioc->delayed_tr_list)) {
3641                 delayed_tr = list_entry(ioc->delayed_tr_list.next,
3642                     struct _tr_list, list);
3643                 mpt3sas_base_free_smid(ioc, smid);
3644                 _scsih_tm_tr_send(ioc, delayed_tr->handle);
3645                 list_del(&delayed_tr->list);
3646                 kfree(delayed_tr);
3647                 return 0;
3648         }
3649
3650         return 1;
3651 }
3652
3653 /**
3654  * _scsih_check_topo_delete_events - sanity check on topo events
3655  * @ioc: per adapter object
3656  * @event_data: the event data payload
3657  *
3658  * This routine added to better handle cable breaker.
3659  *
3660  * This handles the case where driver receives multiple expander
3661  * add and delete events in a single shot.  When there is a delete event
3662  * the routine will void any pending add events waiting in the event queue.
3663  *
3664  * Return nothing.
3665  */
3666 static void
3667 _scsih_check_topo_delete_events(struct MPT3SAS_ADAPTER *ioc,
3668         Mpi2EventDataSasTopologyChangeList_t *event_data)
3669 {
3670         struct fw_event_work *fw_event;
3671         Mpi2EventDataSasTopologyChangeList_t *local_event_data;
3672         u16 expander_handle;
3673         struct _sas_node *sas_expander;
3674         unsigned long flags;
3675         int i, reason_code;
3676         u16 handle;
3677
3678         for (i = 0 ; i < event_data->NumEntries; i++) {
3679                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3680                 if (!handle)
3681                         continue;
3682                 reason_code = event_data->PHY[i].PhyStatus &
3683                     MPI2_EVENT_SAS_TOPO_RC_MASK;
3684                 if (reason_code == MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING)
3685                         _scsih_tm_tr_send(ioc, handle);
3686         }
3687
3688         expander_handle = le16_to_cpu(event_data->ExpanderDevHandle);
3689         if (expander_handle < ioc->sas_hba.num_phys) {
3690                 _scsih_block_io_to_children_attached_directly(ioc, event_data);
3691                 return;
3692         }
3693         if (event_data->ExpStatus ==
3694             MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING) {
3695                 /* put expander attached devices into blocking state */
3696                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
3697                 sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
3698                     expander_handle);
3699                 _scsih_block_io_to_children_attached_to_ex(ioc, sas_expander);
3700                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
3701                 do {
3702                         handle = find_first_bit(ioc->blocking_handles,
3703                             ioc->facts.MaxDevHandle);
3704                         if (handle < ioc->facts.MaxDevHandle)
3705                                 _scsih_block_io_device(ioc, handle);
3706                 } while (test_and_clear_bit(handle, ioc->blocking_handles));
3707         } else if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_RESPONDING)
3708                 _scsih_block_io_to_children_attached_directly(ioc, event_data);
3709
3710         if (event_data->ExpStatus != MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING)
3711                 return;
3712
3713         /* mark ignore flag for pending events */
3714         spin_lock_irqsave(&ioc->fw_event_lock, flags);
3715         list_for_each_entry(fw_event, &ioc->fw_event_list, list) {
3716                 if (fw_event->event != MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST ||
3717                     fw_event->ignore)
3718                         continue;
3719                 local_event_data = (Mpi2EventDataSasTopologyChangeList_t *)
3720                                    fw_event->event_data;
3721                 if (local_event_data->ExpStatus ==
3722                     MPI2_EVENT_SAS_TOPO_ES_ADDED ||
3723                     local_event_data->ExpStatus ==
3724                     MPI2_EVENT_SAS_TOPO_ES_RESPONDING) {
3725                         if (le16_to_cpu(local_event_data->ExpanderDevHandle) ==
3726                             expander_handle) {
3727                                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3728                                     "setting ignoring flag\n", ioc->name));
3729                                 fw_event->ignore = 1;
3730                         }
3731                 }
3732         }
3733         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
3734 }
3735
3736 /**
3737  * _scsih_set_volume_delete_flag - setting volume delete flag
3738  * @ioc: per adapter object
3739  * @handle: device handle
3740  *
3741  * This returns nothing.
3742  */
3743 static void
3744 _scsih_set_volume_delete_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3745 {
3746         struct _raid_device *raid_device;
3747         struct MPT3SAS_TARGET *sas_target_priv_data;
3748         unsigned long flags;
3749
3750         spin_lock_irqsave(&ioc->raid_device_lock, flags);
3751         raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
3752         if (raid_device && raid_device->starget &&
3753             raid_device->starget->hostdata) {
3754                 sas_target_priv_data =
3755                     raid_device->starget->hostdata;
3756                 sas_target_priv_data->deleted = 1;
3757                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3758                     "setting delete flag: handle(0x%04x), "
3759                     "wwid(0x%016llx)\n", ioc->name, handle,
3760                     (unsigned long long) raid_device->wwid));
3761         }
3762         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
3763 }
3764
3765 /**
3766  * _scsih_set_volume_handle_for_tr - set handle for target reset to volume
3767  * @handle: input handle
3768  * @a: handle for volume a
3769  * @b: handle for volume b
3770  *
3771  * IR firmware only supports two raid volumes.  The purpose of this
3772  * routine is to set the volume handle in either a or b. When the given
3773  * input handle is non-zero, or when a and b have not been set before.
3774  */
3775 static void
3776 _scsih_set_volume_handle_for_tr(u16 handle, u16 *a, u16 *b)
3777 {
3778         if (!handle || handle == *a || handle == *b)
3779                 return;
3780         if (!*a)
3781                 *a = handle;
3782         else if (!*b)
3783                 *b = handle;
3784 }
3785
3786 /**
3787  * _scsih_check_ir_config_unhide_events - check for UNHIDE events
3788  * @ioc: per adapter object
3789  * @event_data: the event data payload
3790  * Context: interrupt time.
3791  *
3792  * This routine will send target reset to volume, followed by target
3793  * resets to the PDs. This is called when a PD has been removed, or
3794  * volume has been deleted or removed. When the target reset is sent
3795  * to volume, the PD target resets need to be queued to start upon
3796  * completion of the volume target reset.
3797  *
3798  * Return nothing.
3799  */
3800 static void
3801 _scsih_check_ir_config_unhide_events(struct MPT3SAS_ADAPTER *ioc,
3802         Mpi2EventDataIrConfigChangeList_t *event_data)
3803 {
3804         Mpi2EventIrConfigElement_t *element;
3805         int i;
3806         u16 handle, volume_handle, a, b;
3807         struct _tr_list *delayed_tr;
3808
3809         a = 0;
3810         b = 0;
3811
3812         if (ioc->is_warpdrive)
3813                 return;
3814
3815         /* Volume Resets for Deleted or Removed */
3816         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3817         for (i = 0; i < event_data->NumElements; i++, element++) {
3818                 if (le32_to_cpu(event_data->Flags) &
3819                     MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3820                         continue;
3821                 if (element->ReasonCode ==
3822                     MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED ||
3823                     element->ReasonCode ==
3824                     MPI2_EVENT_IR_CHANGE_RC_REMOVED) {
3825                         volume_handle = le16_to_cpu(element->VolDevHandle);
3826                         _scsih_set_volume_delete_flag(ioc, volume_handle);
3827                         _scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3828                 }
3829         }
3830
3831         /* Volume Resets for UNHIDE events */
3832         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3833         for (i = 0; i < event_data->NumElements; i++, element++) {
3834                 if (le32_to_cpu(event_data->Flags) &
3835                     MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3836                         continue;
3837                 if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_UNHIDE) {
3838                         volume_handle = le16_to_cpu(element->VolDevHandle);
3839                         _scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3840                 }
3841         }
3842
3843         if (a)
3844                 _scsih_tm_tr_volume_send(ioc, a);
3845         if (b)
3846                 _scsih_tm_tr_volume_send(ioc, b);
3847
3848         /* PD target resets */
3849         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3850         for (i = 0; i < event_data->NumElements; i++, element++) {
3851                 if (element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_UNHIDE)
3852                         continue;
3853                 handle = le16_to_cpu(element->PhysDiskDevHandle);
3854                 volume_handle = le16_to_cpu(element->VolDevHandle);
3855                 clear_bit(handle, ioc->pd_handles);
3856                 if (!volume_handle)
3857                         _scsih_tm_tr_send(ioc, handle);
3858                 else if (volume_handle == a || volume_handle == b) {
3859                         delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3860                         BUG_ON(!delayed_tr);
3861                         INIT_LIST_HEAD(&delayed_tr->list);
3862                         delayed_tr->handle = handle;
3863                         list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3864                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3865                             "DELAYED:tr:handle(0x%04x), (open)\n", ioc->name,
3866                             handle));
3867                 } else
3868                         _scsih_tm_tr_send(ioc, handle);
3869         }
3870 }
3871
3872
3873 /**
3874  * _scsih_check_volume_delete_events - set delete flag for volumes
3875  * @ioc: per adapter object
3876  * @event_data: the event data payload
3877  * Context: interrupt time.
3878  *
3879  * This will handle the case when the cable connected to entire volume is
3880  * pulled. We will take care of setting the deleted flag so normal IO will
3881  * not be sent.
3882  *
3883  * Return nothing.
3884  */
3885 static void
3886 _scsih_check_volume_delete_events(struct MPT3SAS_ADAPTER *ioc,
3887         Mpi2EventDataIrVolume_t *event_data)
3888 {
3889         u32 state;
3890
3891         if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
3892                 return;
3893         state = le32_to_cpu(event_data->NewValue);
3894         if (state == MPI2_RAID_VOL_STATE_MISSING || state ==
3895             MPI2_RAID_VOL_STATE_FAILED)
3896                 _scsih_set_volume_delete_flag(ioc,
3897                     le16_to_cpu(event_data->VolDevHandle));
3898 }
3899
3900 /**
3901  * _scsih_temp_threshold_events - display temperature threshold exceeded events
3902  * @ioc: per adapter object
3903  * @event_data: the temp threshold event data
3904  * Context: interrupt time.
3905  *
3906  * Return nothing.
3907  */
3908 static void
3909 _scsih_temp_threshold_events(struct MPT3SAS_ADAPTER *ioc,
3910         Mpi2EventDataTemperature_t *event_data)
3911 {
3912         if (ioc->temp_sensors_count >= event_data->SensorNum) {
3913                 pr_err(MPT3SAS_FMT "Temperature Threshold flags %s%s%s%s"
3914                   " exceeded for Sensor: %d !!!\n", ioc->name,
3915                   ((le16_to_cpu(event_data->Status) & 0x1) == 1) ? "0 " : " ",
3916                   ((le16_to_cpu(event_data->Status) & 0x2) == 2) ? "1 " : " ",
3917                   ((le16_to_cpu(event_data->Status) & 0x4) == 4) ? "2 " : " ",
3918                   ((le16_to_cpu(event_data->Status) & 0x8) == 8) ? "3 " : " ",
3919                   event_data->SensorNum);
3920                 pr_err(MPT3SAS_FMT "Current Temp In Celsius: %d\n",
3921                         ioc->name, event_data->CurrentTemperature);
3922         }
3923 }
3924
3925 static int _scsih_set_satl_pending(struct scsi_cmnd *scmd, bool pending)
3926 {
3927         struct MPT3SAS_DEVICE *priv = scmd->device->hostdata;
3928
3929         if (scmd->cmnd[0] != ATA_12 && scmd->cmnd[0] != ATA_16)
3930                 return 0;
3931
3932         if (pending)
3933                 return test_and_set_bit(0, &priv->ata_command_pending);
3934
3935         clear_bit(0, &priv->ata_command_pending);
3936         return 0;
3937 }
3938
3939 /**
3940  * _scsih_flush_running_cmds - completing outstanding commands.
3941  * @ioc: per adapter object
3942  *
3943  * The flushing out of all pending scmd commands following host reset,
3944  * where all IO is dropped to the floor.
3945  *
3946  * Return nothing.
3947  */
3948 static void
3949 _scsih_flush_running_cmds(struct MPT3SAS_ADAPTER *ioc)
3950 {
3951         struct scsi_cmnd *scmd;
3952         u16 smid;
3953         u16 count = 0;
3954
3955         for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
3956                 scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
3957                 if (!scmd)
3958                         continue;
3959                 count++;
3960                 _scsih_set_satl_pending(scmd, false);
3961                 mpt3sas_base_free_smid(ioc, smid);
3962                 scsi_dma_unmap(scmd);
3963                 if (ioc->pci_error_recovery)
3964                         scmd->result = DID_NO_CONNECT << 16;
3965                 else
3966                         scmd->result = DID_RESET << 16;
3967                 scmd->scsi_done(scmd);
3968         }
3969         dtmprintk(ioc, pr_info(MPT3SAS_FMT "completing %d cmds\n",
3970             ioc->name, count));
3971 }
3972
3973 /**
3974  * _scsih_setup_eedp - setup MPI request for EEDP transfer
3975  * @ioc: per adapter object
3976  * @scmd: pointer to scsi command object
3977  * @mpi_request: pointer to the SCSI_IO request message frame
3978  *
3979  * Supporting protection 1 and 3.
3980  *
3981  * Returns nothing
3982  */
3983 static void
3984 _scsih_setup_eedp(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
3985         Mpi2SCSIIORequest_t *mpi_request)
3986 {
3987         u16 eedp_flags;
3988         unsigned char prot_op = scsi_get_prot_op(scmd);
3989         unsigned char prot_type = scsi_get_prot_type(scmd);
3990         Mpi25SCSIIORequest_t *mpi_request_3v =
3991            (Mpi25SCSIIORequest_t *)mpi_request;
3992
3993         if (prot_type == SCSI_PROT_DIF_TYPE0 || prot_op == SCSI_PROT_NORMAL)
3994                 return;
3995
3996         if (prot_op ==  SCSI_PROT_READ_STRIP)
3997                 eedp_flags = MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP;
3998         else if (prot_op ==  SCSI_PROT_WRITE_INSERT)
3999                 eedp_flags = MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
4000         else
4001                 return;
4002
4003         switch (prot_type) {
4004         case SCSI_PROT_DIF_TYPE1:
4005         case SCSI_PROT_DIF_TYPE2:
4006
4007                 /*
4008                 * enable ref/guard checking
4009                 * auto increment ref tag
4010                 */
4011                 eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
4012                     MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
4013                     MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
4014                 mpi_request->CDB.EEDP32.PrimaryReferenceTag =
4015                     cpu_to_be32(scsi_prot_ref_tag(scmd));
4016                 break;
4017
4018         case SCSI_PROT_DIF_TYPE3:
4019
4020                 /*
4021                 * enable guard checking
4022                 */
4023                 eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
4024
4025                 break;
4026         }
4027
4028         mpi_request_3v->EEDPBlockSize =
4029             cpu_to_le16(scmd->device->sector_size);
4030
4031         if (ioc->is_gen35_ioc)
4032                 eedp_flags |= MPI25_SCSIIO_EEDPFLAGS_APPTAG_DISABLE_MODE;
4033         mpi_request->EEDPFlags = cpu_to_le16(eedp_flags);
4034 }
4035
4036 /**
4037  * _scsih_eedp_error_handling - return sense code for EEDP errors
4038  * @scmd: pointer to scsi command object
4039  * @ioc_status: ioc status
4040  *
4041  * Returns nothing
4042  */
4043 static void
4044 _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
4045 {
4046         u8 ascq;
4047
4048         switch (ioc_status) {
4049         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4050                 ascq = 0x01;
4051                 break;
4052         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4053                 ascq = 0x02;
4054                 break;
4055         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4056                 ascq = 0x03;
4057                 break;
4058         default:
4059                 ascq = 0x00;
4060                 break;
4061         }
4062         scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x10,
4063             ascq);
4064         scmd->result = DRIVER_SENSE << 24 | (DID_ABORT << 16) |
4065             SAM_STAT_CHECK_CONDITION;
4066 }
4067
4068 /**
4069  * scsih_qcmd - main scsi request entry point
4070  * @scmd: pointer to scsi command object
4071  * @done: function pointer to be invoked on completion
4072  *
4073  * The callback index is set inside `ioc->scsi_io_cb_idx`.
4074  *
4075  * Returns 0 on success.  If there's a failure, return either:
4076  * SCSI_MLQUEUE_DEVICE_BUSY if the device queue is full, or
4077  * SCSI_MLQUEUE_HOST_BUSY if the entire host queue is full
4078  */
4079 static int
4080 scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
4081 {
4082         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
4083         struct MPT3SAS_DEVICE *sas_device_priv_data;
4084         struct MPT3SAS_TARGET *sas_target_priv_data;
4085         struct _raid_device *raid_device;
4086         struct request *rq = scmd->request;
4087         int class;
4088         Mpi2SCSIIORequest_t *mpi_request;
4089         u32 mpi_control;
4090         u16 smid;
4091         u16 handle;
4092
4093         if (ioc->logging_level & MPT_DEBUG_SCSI)
4094                 scsi_print_command(scmd);
4095
4096         sas_device_priv_data = scmd->device->hostdata;
4097         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
4098                 scmd->result = DID_NO_CONNECT << 16;
4099                 scmd->scsi_done(scmd);
4100                 return 0;
4101         }
4102
4103         if (ioc->pci_error_recovery || ioc->remove_host) {
4104                 scmd->result = DID_NO_CONNECT << 16;
4105                 scmd->scsi_done(scmd);
4106                 return 0;
4107         }
4108
4109         /*
4110          * Bug work around for firmware SATL handling.  The loop
4111          * is based on atomic operations and ensures consistency
4112          * since we're lockless at this point
4113          */
4114         do {
4115                 if (test_bit(0, &sas_device_priv_data->ata_command_pending)) {
4116                         scmd->result = SAM_STAT_BUSY;
4117                         scmd->scsi_done(scmd);
4118                         return 0;
4119                 }
4120         } while (_scsih_set_satl_pending(scmd, true));
4121
4122         sas_target_priv_data = sas_device_priv_data->sas_target;
4123
4124         /* invalid device handle */
4125         handle = sas_target_priv_data->handle;
4126         if (handle == MPT3SAS_INVALID_DEVICE_HANDLE) {
4127                 scmd->result = DID_NO_CONNECT << 16;
4128                 scmd->scsi_done(scmd);
4129                 return 0;
4130         }
4131
4132
4133         /* host recovery or link resets sent via IOCTLs */
4134         if (ioc->shost_recovery || ioc->ioc_link_reset_in_progress)
4135                 return SCSI_MLQUEUE_HOST_BUSY;
4136
4137         /* device has been deleted */
4138         else if (sas_target_priv_data->deleted) {
4139                 scmd->result = DID_NO_CONNECT << 16;
4140                 scmd->scsi_done(scmd);
4141                 return 0;
4142         /* device busy with task management */
4143         } else if (sas_target_priv_data->tm_busy ||
4144             sas_device_priv_data->block)
4145                 return SCSI_MLQUEUE_DEVICE_BUSY;
4146
4147         if (scmd->sc_data_direction == DMA_FROM_DEVICE)
4148                 mpi_control = MPI2_SCSIIO_CONTROL_READ;
4149         else if (scmd->sc_data_direction == DMA_TO_DEVICE)
4150                 mpi_control = MPI2_SCSIIO_CONTROL_WRITE;
4151         else
4152                 mpi_control = MPI2_SCSIIO_CONTROL_NODATATRANSFER;
4153
4154         /* set tags */
4155         mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
4156         /* NCQ Prio supported, make sure control indicated high priority */
4157         if (sas_device_priv_data->ncq_prio_enable) {
4158                 class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
4159                 if (class == IOPRIO_CLASS_RT)
4160                         mpi_control |= 1 << MPI2_SCSIIO_CONTROL_CMDPRI_SHIFT;
4161         }
4162         /* Make sure Device is not raid volume.
4163          * We do not expose raid functionality to upper layer for warpdrive.
4164          */
4165         if (!ioc->is_warpdrive && !scsih_is_raid(&scmd->device->sdev_gendev)
4166             && sas_is_tlr_enabled(scmd->device) && scmd->cmd_len != 32)
4167                 mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
4168
4169         smid = mpt3sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);
4170         if (!smid) {
4171                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4172                     ioc->name, __func__);
4173                 goto out;
4174         }
4175         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4176         memset(mpi_request, 0, sizeof(Mpi2SCSIIORequest_t));
4177         _scsih_setup_eedp(ioc, scmd, mpi_request);
4178
4179         if (scmd->cmd_len == 32)
4180                 mpi_control |= 4 << MPI2_SCSIIO_CONTROL_ADDCDBLEN_SHIFT;
4181         mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4182         if (sas_device_priv_data->sas_target->flags &
4183             MPT_TARGET_FLAGS_RAID_COMPONENT)
4184                 mpi_request->Function = MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
4185         else
4186                 mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4187         mpi_request->DevHandle = cpu_to_le16(handle);
4188         mpi_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
4189         mpi_request->Control = cpu_to_le32(mpi_control);
4190         mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len);
4191         mpi_request->MsgFlags = MPI2_SCSIIO_MSGFLAGS_SYSTEM_SENSE_ADDR;
4192         mpi_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
4193         mpi_request->SenseBufferLowAddress =
4194             mpt3sas_base_get_sense_buffer_dma(ioc, smid);
4195         mpi_request->SGLOffset0 = offsetof(Mpi2SCSIIORequest_t, SGL) / 4;
4196         int_to_scsilun(sas_device_priv_data->lun, (struct scsi_lun *)
4197             mpi_request->LUN);
4198         memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4199
4200         if (mpi_request->DataLength) {
4201                 if (ioc->build_sg_scmd(ioc, scmd, smid)) {
4202                         mpt3sas_base_free_smid(ioc, smid);
4203                         goto out;
4204                 }
4205         } else
4206                 ioc->build_zero_len_sge(ioc, &mpi_request->SGL);
4207
4208         raid_device = sas_target_priv_data->raid_device;
4209         if (raid_device && raid_device->direct_io_enabled)
4210                 mpt3sas_setup_direct_io(ioc, scmd, raid_device, mpi_request,
4211                     smid);
4212
4213         if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)) {
4214                 if (sas_target_priv_data->flags & MPT_TARGET_FASTPATH_IO) {
4215                         mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len |
4216                             MPI25_SCSIIO_IOFLAGS_FAST_PATH);
4217                         ioc->put_smid_fast_path(ioc, smid, handle);
4218                 } else
4219                         ioc->put_smid_scsi_io(ioc, smid,
4220                             le16_to_cpu(mpi_request->DevHandle));
4221         } else
4222                 ioc->put_smid_default(ioc, smid);
4223         return 0;
4224
4225  out:
4226         return SCSI_MLQUEUE_HOST_BUSY;
4227 }
4228
4229 /**
4230  * _scsih_normalize_sense - normalize descriptor and fixed format sense data
4231  * @sense_buffer: sense data returned by target
4232  * @data: normalized skey/asc/ascq
4233  *
4234  * Return nothing.
4235  */
4236 static void
4237 _scsih_normalize_sense(char *sense_buffer, struct sense_info *data)
4238 {
4239         if ((sense_buffer[0] & 0x7F) >= 0x72) {
4240                 /* descriptor format */
4241                 data->skey = sense_buffer[1] & 0x0F;
4242                 data->asc = sense_buffer[2];
4243                 data->ascq = sense_buffer[3];
4244         } else {
4245                 /* fixed format */
4246                 data->skey = sense_buffer[2] & 0x0F;
4247                 data->asc = sense_buffer[12];
4248                 data->ascq = sense_buffer[13];
4249         }
4250 }
4251
4252 /**
4253  * _scsih_scsi_ioc_info - translated non-succesfull SCSI_IO request
4254  * @ioc: per adapter object
4255  * @scmd: pointer to scsi command object
4256  * @mpi_reply: reply mf payload returned from firmware
4257  *
4258  * scsi_status - SCSI Status code returned from target device
4259  * scsi_state - state info associated with SCSI_IO determined by ioc
4260  * ioc_status - ioc supplied status info
4261  *
4262  * Return nothing.
4263  */
4264 static void
4265 _scsih_scsi_ioc_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
4266         Mpi2SCSIIOReply_t *mpi_reply, u16 smid)
4267 {
4268         u32 response_info;
4269         u8 *response_bytes;
4270         u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
4271             MPI2_IOCSTATUS_MASK;
4272         u8 scsi_state = mpi_reply->SCSIState;
4273         u8 scsi_status = mpi_reply->SCSIStatus;
4274         char *desc_ioc_state = NULL;
4275         char *desc_scsi_status = NULL;
4276         char *desc_scsi_state = ioc->tmp_string;
4277         u32 log_info = le32_to_cpu(mpi_reply->IOCLogInfo);
4278         struct _sas_device *sas_device = NULL;
4279         struct scsi_target *starget = scmd->device->sdev_target;
4280         struct MPT3SAS_TARGET *priv_target = starget->hostdata;
4281         char *device_str = NULL;
4282
4283         if (!priv_target)
4284                 return;
4285         if (ioc->hide_ir_msg)
4286                 device_str = "WarpDrive";
4287         else
4288                 device_str = "volume";
4289
4290         if (log_info == 0x31170000)
4291                 return;
4292
4293         switch (ioc_status) {
4294         case MPI2_IOCSTATUS_SUCCESS:
4295                 desc_ioc_state = "success";
4296                 break;
4297         case MPI2_IOCSTATUS_INVALID_FUNCTION:
4298                 desc_ioc_state = "invalid function";
4299                 break;
4300         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4301                 desc_ioc_state = "scsi recovered error";
4302                 break;
4303         case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
4304                 desc_ioc_state = "scsi invalid dev handle";
4305                 break;
4306         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4307                 desc_ioc_state = "scsi device not there";
4308                 break;
4309         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4310                 desc_ioc_state = "scsi data overrun";
4311                 break;
4312         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4313                 desc_ioc_state = "scsi data underrun";
4314                 break;
4315         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4316                 desc_ioc_state = "scsi io data error";
4317                 break;
4318         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4319                 desc_ioc_state = "scsi protocol error";
4320                 break;
4321         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4322                 desc_ioc_state = "scsi task terminated";
4323                 break;
4324         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4325                 desc_ioc_state = "scsi residual mismatch";
4326                 break;
4327         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4328                 desc_ioc_state = "scsi task mgmt failed";
4329                 break;
4330         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4331                 desc_ioc_state = "scsi ioc terminated";
4332                 break;
4333         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4334                 desc_ioc_state = "scsi ext terminated";
4335                 break;
4336         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4337                 desc_ioc_state = "eedp guard error";
4338                 break;
4339         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4340                 desc_ioc_state = "eedp ref tag error";
4341                 break;
4342         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4343                 desc_ioc_state = "eedp app tag error";
4344                 break;
4345         case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4346                 desc_ioc_state = "insufficient power";
4347                 break;
4348         default:
4349                 desc_ioc_state = "unknown";
4350                 break;
4351         }
4352
4353         switch (scsi_status) {
4354         case MPI2_SCSI_STATUS_GOOD:
4355                 desc_scsi_status = "good";
4356                 break;
4357         case MPI2_SCSI_STATUS_CHECK_CONDITION:
4358                 desc_scsi_status = "check condition";
4359                 break;
4360         case MPI2_SCSI_STATUS_CONDITION_MET:
4361                 desc_scsi_status = "condition met";
4362                 break;
4363         case MPI2_SCSI_STATUS_BUSY:
4364                 desc_scsi_status = "busy";
4365                 break;
4366         case MPI2_SCSI_STATUS_INTERMEDIATE:
4367                 desc_scsi_status = "intermediate";
4368                 break;
4369         case MPI2_SCSI_STATUS_INTERMEDIATE_CONDMET:
4370                 desc_scsi_status = "intermediate condmet";
4371                 break;
4372         case MPI2_SCSI_STATUS_RESERVATION_CONFLICT:
4373                 desc_scsi_status = "reservation conflict";
4374                 break;
4375         case MPI2_SCSI_STATUS_COMMAND_TERMINATED:
4376                 desc_scsi_status = "command terminated";
4377                 break;
4378         case MPI2_SCSI_STATUS_TASK_SET_FULL:
4379                 desc_scsi_status = "task set full";
4380                 break;
4381         case MPI2_SCSI_STATUS_ACA_ACTIVE:
4382                 desc_scsi_status = "aca active";
4383                 break;
4384         case MPI2_SCSI_STATUS_TASK_ABORTED:
4385                 desc_scsi_status = "task aborted";
4386                 break;
4387         default:
4388                 desc_scsi_status = "unknown";
4389                 break;
4390         }
4391
4392         desc_scsi_state[0] = '\0';
4393         if (!scsi_state)
4394                 desc_scsi_state = " ";
4395         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4396                 strcat(desc_scsi_state, "response info ");
4397         if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4398                 strcat(desc_scsi_state, "state terminated ");
4399         if (scsi_state & MPI2_SCSI_STATE_NO_SCSI_STATUS)
4400                 strcat(desc_scsi_state, "no status ");
4401         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_FAILED)
4402                 strcat(desc_scsi_state, "autosense failed ");
4403         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID)
4404                 strcat(desc_scsi_state, "autosense valid ");
4405
4406         scsi_print_command(scmd);
4407
4408         if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
4409                 pr_warn(MPT3SAS_FMT "\t%s wwid(0x%016llx)\n", ioc->name,
4410                     device_str, (unsigned long long)priv_target->sas_address);
4411         } else {
4412                 sas_device = mpt3sas_get_sdev_from_target(ioc, priv_target);
4413                 if (sas_device) {
4414                         pr_warn(MPT3SAS_FMT
4415                                 "\tsas_address(0x%016llx), phy(%d)\n",
4416                                 ioc->name, (unsigned long long)
4417                             sas_device->sas_address, sas_device->phy);
4418                         if (sas_device->enclosure_handle != 0)
4419                                 pr_warn(MPT3SAS_FMT
4420                                   "\tenclosure_logical_id(0x%016llx),"
4421                                   "slot(%d)\n", ioc->name,
4422                                   (unsigned long long)
4423                                   sas_device->enclosure_logical_id,
4424                                   sas_device->slot);
4425                         if (sas_device->connector_name[0])
4426                                 pr_warn(MPT3SAS_FMT
4427                                   "\tenclosure level(0x%04x),"
4428                                   " connector name( %s)\n", ioc->name,
4429                                   sas_device->enclosure_level,
4430                                   sas_device->connector_name);
4431
4432                         sas_device_put(sas_device);
4433                 }
4434         }
4435
4436         pr_warn(MPT3SAS_FMT
4437                 "\thandle(0x%04x), ioc_status(%s)(0x%04x), smid(%d)\n",
4438                 ioc->name, le16_to_cpu(mpi_reply->DevHandle),
4439             desc_ioc_state, ioc_status, smid);
4440         pr_warn(MPT3SAS_FMT
4441                 "\trequest_len(%d), underflow(%d), resid(%d)\n",
4442                 ioc->name, scsi_bufflen(scmd), scmd->underflow,
4443             scsi_get_resid(scmd));
4444         pr_warn(MPT3SAS_FMT
4445                 "\ttag(%d), transfer_count(%d), sc->result(0x%08x)\n",
4446                 ioc->name, le16_to_cpu(mpi_reply->TaskTag),
4447             le32_to_cpu(mpi_reply->TransferCount), scmd->result);
4448         pr_warn(MPT3SAS_FMT
4449                 "\tscsi_status(%s)(0x%02x), scsi_state(%s)(0x%02x)\n",
4450                 ioc->name, desc_scsi_status,
4451             scsi_status, desc_scsi_state, scsi_state);
4452
4453         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4454                 struct sense_info data;
4455                 _scsih_normalize_sense(scmd->sense_buffer, &data);
4456                 pr_warn(MPT3SAS_FMT
4457                         "\t[sense_key,asc,ascq]: [0x%02x,0x%02x,0x%02x], count(%d)\n",
4458                         ioc->name, data.skey,
4459                     data.asc, data.ascq, le32_to_cpu(mpi_reply->SenseCount));
4460         }
4461
4462         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID) {
4463                 response_info = le32_to_cpu(mpi_reply->ResponseInfo);
4464                 response_bytes = (u8 *)&response_info;
4465                 _scsih_response_code(ioc, response_bytes[0]);
4466         }
4467 }
4468
4469 /**
4470  * _scsih_turn_on_pfa_led - illuminate PFA LED
4471  * @ioc: per adapter object
4472  * @handle: device handle
4473  * Context: process
4474  *
4475  * Return nothing.
4476  */
4477 static void
4478 _scsih_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4479 {
4480         Mpi2SepReply_t mpi_reply;
4481         Mpi2SepRequest_t mpi_request;
4482         struct _sas_device *sas_device;
4483
4484         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
4485         if (!sas_device)
4486                 return;
4487
4488         memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4489         mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4490         mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4491         mpi_request.SlotStatus =
4492             cpu_to_le32(MPI2_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
4493         mpi_request.DevHandle = cpu_to_le16(handle);
4494         mpi_request.Flags = MPI2_SEP_REQ_FLAGS_DEVHANDLE_ADDRESS;
4495         if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4496             &mpi_request)) != 0) {
4497                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4498                 __FILE__, __LINE__, __func__);
4499                 goto out;
4500         }
4501         sas_device->pfa_led_on = 1;
4502
4503         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4504                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
4505                         "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4506                         ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4507                     le32_to_cpu(mpi_reply.IOCLogInfo)));
4508                 goto out;
4509         }
4510 out:
4511         sas_device_put(sas_device);
4512 }
4513
4514 /**
4515  * _scsih_turn_off_pfa_led - turn off Fault LED
4516  * @ioc: per adapter object
4517  * @sas_device: sas device whose PFA LED has to turned off
4518  * Context: process
4519  *
4520  * Return nothing.
4521  */
4522 static void
4523 _scsih_turn_off_pfa_led(struct MPT3SAS_ADAPTER *ioc,
4524         struct _sas_device *sas_device)
4525 {
4526         Mpi2SepReply_t mpi_reply;
4527         Mpi2SepRequest_t mpi_request;
4528
4529         memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4530         mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4531         mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4532         mpi_request.SlotStatus = 0;
4533         mpi_request.Slot = cpu_to_le16(sas_device->slot);
4534         mpi_request.DevHandle = 0;
4535         mpi_request.EnclosureHandle = cpu_to_le16(sas_device->enclosure_handle);
4536         mpi_request.Flags = MPI2_SEP_REQ_FLAGS_ENCLOSURE_SLOT_ADDRESS;
4537         if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4538                 &mpi_request)) != 0) {
4539                 printk(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4540                 __FILE__, __LINE__, __func__);
4541                 return;
4542         }
4543
4544         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4545                 dewtprintk(ioc, printk(MPT3SAS_FMT
4546                  "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4547                  ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4548                  le32_to_cpu(mpi_reply.IOCLogInfo)));
4549                 return;
4550         }
4551 }
4552
4553 /**
4554  * _scsih_send_event_to_turn_on_pfa_led - fire delayed event
4555  * @ioc: per adapter object
4556  * @handle: device handle
4557  * Context: interrupt.
4558  *
4559  * Return nothing.
4560  */
4561 static void
4562 _scsih_send_event_to_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4563 {
4564         struct fw_event_work *fw_event;
4565
4566         fw_event = alloc_fw_event_work(0);
4567         if (!fw_event)
4568                 return;
4569         fw_event->event = MPT3SAS_TURN_ON_PFA_LED;
4570         fw_event->device_handle = handle;
4571         fw_event->ioc = ioc;
4572         _scsih_fw_event_add(ioc, fw_event);
4573         fw_event_work_put(fw_event);
4574 }
4575
4576 /**
4577  * _scsih_smart_predicted_fault - process smart errors
4578  * @ioc: per adapter object
4579  * @handle: device handle
4580  * Context: interrupt.
4581  *
4582  * Return nothing.
4583  */
4584 static void
4585 _scsih_smart_predicted_fault(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4586 {
4587         struct scsi_target *starget;
4588         struct MPT3SAS_TARGET *sas_target_priv_data;
4589         Mpi2EventNotificationReply_t *event_reply;
4590         Mpi2EventDataSasDeviceStatusChange_t *event_data;
4591         struct _sas_device *sas_device;
4592         ssize_t sz;
4593         unsigned long flags;
4594
4595         /* only handle non-raid devices */
4596         spin_lock_irqsave(&ioc->sas_device_lock, flags);
4597         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
4598         if (!sas_device)
4599                 goto out_unlock;
4600
4601         starget = sas_device->starget;
4602         sas_target_priv_data = starget->hostdata;
4603
4604         if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) ||
4605            ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)))
4606                 goto out_unlock;
4607
4608         if (sas_device->enclosure_handle != 0)
4609                 starget_printk(KERN_INFO, starget, "predicted fault, "
4610                         "enclosure logical id(0x%016llx), slot(%d)\n",
4611                         (unsigned long long)sas_device->enclosure_logical_id,
4612                         sas_device->slot);
4613         if (sas_device->connector_name[0] != '\0')
4614                 starget_printk(KERN_WARNING, starget, "predicted fault, "
4615                         "enclosure level(0x%04x), connector name( %s)\n",
4616                         sas_device->enclosure_level,
4617                         sas_device->connector_name);
4618         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4619
4620         if (ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
4621                 _scsih_send_event_to_turn_on_pfa_led(ioc, handle);
4622
4623         /* insert into event log */
4624         sz = offsetof(Mpi2EventNotificationReply_t, EventData) +
4625              sizeof(Mpi2EventDataSasDeviceStatusChange_t);
4626         event_reply = kzalloc(sz, GFP_KERNEL);
4627         if (!event_reply) {
4628                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4629                     ioc->name, __FILE__, __LINE__, __func__);
4630                 goto out;
4631         }
4632
4633         event_reply->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
4634         event_reply->Event =
4635             cpu_to_le16(MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4636         event_reply->MsgLength = sz/4;
4637         event_reply->EventDataLength =
4638             cpu_to_le16(sizeof(Mpi2EventDataSasDeviceStatusChange_t)/4);
4639         event_data = (Mpi2EventDataSasDeviceStatusChange_t *)
4640             event_reply->EventData;
4641         event_data->ReasonCode = MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA;
4642         event_data->ASC = 0x5D;
4643         event_data->DevHandle = cpu_to_le16(handle);
4644         event_data->SASAddress = cpu_to_le64(sas_target_priv_data->sas_address);
4645         mpt3sas_ctl_add_to_event_log(ioc, event_reply);
4646         kfree(event_reply);
4647 out:
4648         if (sas_device)
4649                 sas_device_put(sas_device);
4650         return;
4651
4652 out_unlock:
4653         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4654         goto out;
4655 }
4656
4657 /**
4658  * _scsih_io_done - scsi request callback
4659  * @ioc: per adapter object
4660  * @smid: system request message index
4661  * @msix_index: MSIX table index supplied by the OS
4662  * @reply: reply message frame(lower 32bit addr)
4663  *
4664  * Callback handler when using _scsih_qcmd.
4665  *
4666  * Return 1 meaning mf should be freed from _base_interrupt
4667  *        0 means the mf is freed from this function.
4668  */
4669 static u8
4670 _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
4671 {
4672         Mpi2SCSIIORequest_t *mpi_request;
4673         Mpi2SCSIIOReply_t *mpi_reply;
4674         struct scsi_cmnd *scmd;
4675         u16 ioc_status;
4676         u32 xfer_cnt;
4677         u8 scsi_state;
4678         u8 scsi_status;
4679         u32 log_info;
4680         struct MPT3SAS_DEVICE *sas_device_priv_data;
4681         u32 response_code = 0;
4682         unsigned long flags;
4683
4684         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
4685
4686         if (ioc->broadcast_aen_busy || ioc->pci_error_recovery ||
4687                         ioc->got_task_abort_from_ioctl)
4688                 scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
4689         else
4690                 scmd = __scsih_scsi_lookup_get_clear(ioc, smid);
4691
4692         if (scmd == NULL)
4693                 return 1;
4694
4695         _scsih_set_satl_pending(scmd, false);
4696
4697         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4698
4699         if (mpi_reply == NULL) {
4700                 scmd->result = DID_OK << 16;
4701                 goto out;
4702         }
4703
4704         sas_device_priv_data = scmd->device->hostdata;
4705         if (!sas_device_priv_data || !sas_device_priv_data->sas_target ||
4706              sas_device_priv_data->sas_target->deleted) {
4707                 scmd->result = DID_NO_CONNECT << 16;
4708                 goto out;
4709         }
4710         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
4711
4712         /*
4713          * WARPDRIVE: If direct_io is set then it is directIO,
4714          * the failed direct I/O should be redirected to volume
4715          */
4716         if (mpt3sas_scsi_direct_io_get(ioc, smid) &&
4717              ((ioc_status & MPI2_IOCSTATUS_MASK)
4718               != MPI2_IOCSTATUS_SCSI_TASK_TERMINATED)) {
4719                 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4720                 ioc->scsi_lookup[smid - 1].scmd = scmd;
4721                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4722                 mpt3sas_scsi_direct_io_set(ioc, smid, 0);
4723                 memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4724                 mpi_request->DevHandle =
4725                     cpu_to_le16(sas_device_priv_data->sas_target->handle);
4726                 ioc->put_smid_scsi_io(ioc, smid,
4727                     sas_device_priv_data->sas_target->handle);
4728                 return 0;
4729         }
4730         /* turning off TLR */
4731         scsi_state = mpi_reply->SCSIState;
4732         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4733                 response_code =
4734                     le32_to_cpu(mpi_reply->ResponseInfo) & 0xFF;
4735         if (!sas_device_priv_data->tlr_snoop_check) {
4736                 sas_device_priv_data->tlr_snoop_check++;
4737                 if (!ioc->is_warpdrive &&
4738                     !scsih_is_raid(&scmd->device->sdev_gendev) &&
4739                     sas_is_tlr_enabled(scmd->device) &&
4740                     response_code == MPI2_SCSITASKMGMT_RSP_INVALID_FRAME) {
4741                         sas_disable_tlr(scmd->device);
4742                         sdev_printk(KERN_INFO, scmd->device, "TLR disabled\n");
4743                 }
4744         }
4745
4746         xfer_cnt = le32_to_cpu(mpi_reply->TransferCount);
4747         scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_cnt);
4748         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
4749                 log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
4750         else
4751                 log_info = 0;
4752         ioc_status &= MPI2_IOCSTATUS_MASK;
4753         scsi_status = mpi_reply->SCSIStatus;
4754
4755         if (ioc_status == MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
4756             (scsi_status == MPI2_SCSI_STATUS_BUSY ||
4757              scsi_status == MPI2_SCSI_STATUS_RESERVATION_CONFLICT ||
4758              scsi_status == MPI2_SCSI_STATUS_TASK_SET_FULL)) {
4759                 ioc_status = MPI2_IOCSTATUS_SUCCESS;
4760         }
4761
4762         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4763                 struct sense_info data;
4764                 const void *sense_data = mpt3sas_base_get_sense_buffer(ioc,
4765                     smid);
4766                 u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
4767                     le32_to_cpu(mpi_reply->SenseCount));
4768                 memcpy(scmd->sense_buffer, sense_data, sz);
4769                 _scsih_normalize_sense(scmd->sense_buffer, &data);
4770                 /* failure prediction threshold exceeded */
4771                 if (data.asc == 0x5D)
4772                         _scsih_smart_predicted_fault(ioc,
4773                             le16_to_cpu(mpi_reply->DevHandle));
4774                 mpt3sas_trigger_scsi(ioc, data.skey, data.asc, data.ascq);
4775
4776                 if ((ioc->logging_level & MPT_DEBUG_REPLY) &&
4777                      ((scmd->sense_buffer[2] == UNIT_ATTENTION) ||
4778                      (scmd->sense_buffer[2] == MEDIUM_ERROR) ||
4779                      (scmd->sense_buffer[2] == HARDWARE_ERROR)))
4780                         _scsih_scsi_ioc_info(ioc, scmd, mpi_reply, smid);
4781         }
4782         switch (ioc_status) {
4783         case MPI2_IOCSTATUS_BUSY:
4784         case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
4785                 scmd->result = SAM_STAT_BUSY;
4786                 break;
4787
4788         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4789                 scmd->result = DID_NO_CONNECT << 16;
4790                 break;
4791
4792         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4793                 if (sas_device_priv_data->block) {
4794                         scmd->result = DID_TRANSPORT_DISRUPTED << 16;
4795                         goto out;
4796                 }
4797                 if (log_info == 0x31110630) {
4798                         if (scmd->retries > 2) {
4799                                 scmd->result = DID_NO_CONNECT << 16;
4800                                 scsi_device_set_state(scmd->device,
4801                                     SDEV_OFFLINE);
4802                         } else {
4803                                 scmd->result = DID_SOFT_ERROR << 16;
4804                                 scmd->device->expecting_cc_ua = 1;
4805                         }
4806                         break;
4807                 } else if (log_info == VIRTUAL_IO_FAILED_RETRY) {
4808                         scmd->result = DID_RESET << 16;
4809                         break;
4810                 } else if ((scmd->device->channel == RAID_CHANNEL) &&
4811                    (scsi_state == (MPI2_SCSI_STATE_TERMINATED |
4812                    MPI2_SCSI_STATE_NO_SCSI_STATUS))) {
4813                         scmd->result = DID_RESET << 16;
4814                         break;
4815                 }
4816                 scmd->result = DID_SOFT_ERROR << 16;
4817                 break;
4818         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4819         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4820                 scmd->result = DID_RESET << 16;
4821                 break;
4822
4823         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4824                 if ((xfer_cnt == 0) || (scmd->underflow > xfer_cnt))
4825                         scmd->result = DID_SOFT_ERROR << 16;
4826                 else
4827                         scmd->result = (DID_OK << 16) | scsi_status;
4828                 break;
4829
4830         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4831                 scmd->result = (DID_OK << 16) | scsi_status;
4832
4833                 if ((scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID))
4834                         break;
4835
4836                 if (xfer_cnt < scmd->underflow) {
4837                         if (scsi_status == SAM_STAT_BUSY)
4838                                 scmd->result = SAM_STAT_BUSY;
4839                         else
4840                                 scmd->result = DID_SOFT_ERROR << 16;
4841                 } else if (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4842                      MPI2_SCSI_STATE_NO_SCSI_STATUS))
4843                         scmd->result = DID_SOFT_ERROR << 16;
4844                 else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4845                         scmd->result = DID_RESET << 16;
4846                 else if (!xfer_cnt && scmd->cmnd[0] == REPORT_LUNS) {
4847                         mpi_reply->SCSIState = MPI2_SCSI_STATE_AUTOSENSE_VALID;
4848                         mpi_reply->SCSIStatus = SAM_STAT_CHECK_CONDITION;
4849                         scmd->result = (DRIVER_SENSE << 24) |
4850                             SAM_STAT_CHECK_CONDITION;
4851                         scmd->sense_buffer[0] = 0x70;
4852                         scmd->sense_buffer[2] = ILLEGAL_REQUEST;
4853                         scmd->sense_buffer[12] = 0x20;
4854                         scmd->sense_buffer[13] = 0;
4855                 }
4856                 break;
4857
4858         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4859                 scsi_set_resid(scmd, 0);
4860         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4861         case MPI2_IOCSTATUS_SUCCESS:
4862                 scmd->result = (DID_OK << 16) | scsi_status;
4863                 if (response_code ==
4864                     MPI2_SCSITASKMGMT_RSP_INVALID_FRAME ||
4865                     (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4866                      MPI2_SCSI_STATE_NO_SCSI_STATUS)))
4867                         scmd->result = DID_SOFT_ERROR << 16;
4868                 else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4869                         scmd->result = DID_RESET << 16;
4870                 break;
4871
4872         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4873         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4874         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4875                 _scsih_eedp_error_handling(scmd, ioc_status);
4876                 break;
4877
4878         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4879         case MPI2_IOCSTATUS_INVALID_FUNCTION:
4880         case MPI2_IOCSTATUS_INVALID_SGL:
4881         case MPI2_IOCSTATUS_INTERNAL_ERROR:
4882         case MPI2_IOCSTATUS_INVALID_FIELD:
4883         case MPI2_IOCSTATUS_INVALID_STATE:
4884         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4885         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4886         case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4887         default:
4888                 scmd->result = DID_SOFT_ERROR << 16;
4889                 break;
4890
4891         }
4892
4893         if (scmd->result && (ioc->logging_level & MPT_DEBUG_REPLY))
4894                 _scsih_scsi_ioc_info(ioc , scmd, mpi_reply, smid);
4895
4896  out:
4897
4898         scsi_dma_unmap(scmd);
4899
4900         scmd->scsi_done(scmd);
4901         return 1;
4902 }
4903
4904 /**
4905  * _scsih_sas_host_refresh - refreshing sas host object contents
4906  * @ioc: per adapter object
4907  * Context: user
4908  *
4909  * During port enable, fw will send topology events for every device. Its
4910  * possible that the handles may change from the previous setting, so this
4911  * code keeping handles updating if changed.
4912  *
4913  * Return nothing.
4914  */
4915 static void
4916 _scsih_sas_host_refresh(struct MPT3SAS_ADAPTER *ioc)
4917 {
4918         u16 sz;
4919         u16 ioc_status;
4920         int i;
4921         Mpi2ConfigReply_t mpi_reply;
4922         Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4923         u16 attached_handle;
4924         u8 link_rate;
4925
4926         dtmprintk(ioc, pr_info(MPT3SAS_FMT
4927             "updating handles for sas_host(0x%016llx)\n",
4928             ioc->name, (unsigned long long)ioc->sas_hba.sas_address));
4929
4930         sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys
4931             * sizeof(Mpi2SasIOUnit0PhyData_t));
4932         sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4933         if (!sas_iounit_pg0) {
4934                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4935                     ioc->name, __FILE__, __LINE__, __func__);
4936                 return;
4937         }
4938
4939         if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
4940             sas_iounit_pg0, sz)) != 0)
4941                 goto out;
4942         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
4943         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
4944                 goto out;
4945         for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
4946                 link_rate = sas_iounit_pg0->PhyData[i].NegotiatedLinkRate >> 4;
4947                 if (i == 0)
4948                         ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
4949                             PhyData[0].ControllerDevHandle);
4950                 ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
4951                 attached_handle = le16_to_cpu(sas_iounit_pg0->PhyData[i].
4952                     AttachedDevHandle);
4953                 if (attached_handle && link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
4954                         link_rate = MPI2_SAS_NEG_LINK_RATE_1_5;
4955                 mpt3sas_transport_update_links(ioc, ioc->sas_hba.sas_address,
4956                     attached_handle, i, link_rate);
4957         }
4958  out:
4959         kfree(sas_iounit_pg0);
4960 }
4961
4962 /**
4963  * _scsih_sas_host_add - create sas host object
4964  * @ioc: per adapter object
4965  *
4966  * Creating host side data object, stored in ioc->sas_hba
4967  *
4968  * Return nothing.
4969  */
4970 static void
4971 _scsih_sas_host_add(struct MPT3SAS_ADAPTER *ioc)
4972 {
4973         int i;
4974         Mpi2ConfigReply_t mpi_reply;
4975         Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4976         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
4977         Mpi2SasPhyPage0_t phy_pg0;
4978         Mpi2SasDevicePage0_t sas_device_pg0;
4979         Mpi2SasEnclosurePage0_t enclosure_pg0;
4980         u16 ioc_status;
4981         u16 sz;
4982         u8 device_missing_delay;
4983         u8 num_phys;
4984
4985         mpt3sas_config_get_number_hba_phys(ioc, &num_phys);
4986         if (!num_phys) {
4987                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4988                     ioc->name, __FILE__, __LINE__, __func__);
4989                 return;
4990         }
4991         ioc->sas_hba.phy = kcalloc(num_phys,
4992             sizeof(struct _sas_phy), GFP_KERNEL);
4993         if (!ioc->sas_hba.phy) {
4994                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4995                     ioc->name, __FILE__, __LINE__, __func__);
4996                 goto out;
4997         }
4998         ioc->sas_hba.num_phys = num_phys;
4999
5000         /* sas_iounit page 0 */
5001         sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
5002             sizeof(Mpi2SasIOUnit0PhyData_t));
5003         sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
5004         if (!sas_iounit_pg0) {
5005                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5006                     ioc->name, __FILE__, __LINE__, __func__);
5007                 return;
5008         }
5009         if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
5010             sas_iounit_pg0, sz))) {
5011                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5012                     ioc->name, __FILE__, __LINE__, __func__);
5013                 goto out;
5014         }
5015         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5016             MPI2_IOCSTATUS_MASK;
5017         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5018                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5019                     ioc->name, __FILE__, __LINE__, __func__);
5020                 goto out;
5021         }
5022
5023         /* sas_iounit page 1 */
5024         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
5025             sizeof(Mpi2SasIOUnit1PhyData_t));
5026         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
5027         if (!sas_iounit_pg1) {
5028                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5029                     ioc->name, __FILE__, __LINE__, __func__);
5030                 goto out;
5031         }
5032         if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
5033             sas_iounit_pg1, sz))) {
5034                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5035                     ioc->name, __FILE__, __LINE__, __func__);
5036                 goto out;
5037         }
5038         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5039             MPI2_IOCSTATUS_MASK;
5040         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5041                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5042                     ioc->name, __FILE__, __LINE__, __func__);
5043                 goto out;
5044         }
5045
5046         ioc->io_missing_delay =
5047             sas_iounit_pg1->IODeviceMissingDelay;
5048         device_missing_delay =
5049             sas_iounit_pg1->ReportDeviceMissingDelay;
5050         if (device_missing_delay & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
5051                 ioc->device_missing_delay = (device_missing_delay &
5052                     MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
5053         else
5054                 ioc->device_missing_delay = device_missing_delay &
5055                     MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
5056
5057         ioc->sas_hba.parent_dev = &ioc->shost->shost_gendev;
5058         for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
5059                 if ((mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
5060                     i))) {
5061                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5062                             ioc->name, __FILE__, __LINE__, __func__);
5063                         goto out;
5064                 }
5065                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5066                     MPI2_IOCSTATUS_MASK;
5067                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5068                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5069                             ioc->name, __FILE__, __LINE__, __func__);
5070                         goto out;
5071                 }
5072
5073                 if (i == 0)
5074                         ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
5075                             PhyData[0].ControllerDevHandle);
5076                 ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
5077                 ioc->sas_hba.phy[i].phy_id = i;
5078                 mpt3sas_transport_add_host_phy(ioc, &ioc->sas_hba.phy[i],
5079                     phy_pg0, ioc->sas_hba.parent_dev);
5080         }
5081         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5082             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, ioc->sas_hba.handle))) {
5083                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5084                     ioc->name, __FILE__, __LINE__, __func__);
5085                 goto out;
5086         }
5087         ioc->sas_hba.enclosure_handle =
5088             le16_to_cpu(sas_device_pg0.EnclosureHandle);
5089         ioc->sas_hba.sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5090         pr_info(MPT3SAS_FMT
5091                 "host_add: handle(0x%04x), sas_addr(0x%016llx), phys(%d)\n",
5092                 ioc->name, ioc->sas_hba.handle,
5093             (unsigned long long) ioc->sas_hba.sas_address,
5094             ioc->sas_hba.num_phys) ;
5095
5096         if (ioc->sas_hba.enclosure_handle) {
5097                 if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5098                     &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5099                    ioc->sas_hba.enclosure_handle)))
5100                         ioc->sas_hba.enclosure_logical_id =
5101                             le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5102         }
5103
5104  out:
5105         kfree(sas_iounit_pg1);
5106         kfree(sas_iounit_pg0);
5107 }
5108
5109 /**
5110  * _scsih_expander_add -  creating expander object
5111  * @ioc: per adapter object
5112  * @handle: expander handle
5113  *
5114  * Creating expander object, stored in ioc->sas_expander_list.
5115  *
5116  * Return 0 for success, else error.
5117  */
5118 static int
5119 _scsih_expander_add(struct MPT3SAS_ADAPTER *ioc, u16 handle)
5120 {
5121         struct _sas_node *sas_expander;
5122         Mpi2ConfigReply_t mpi_reply;
5123         Mpi2ExpanderPage0_t expander_pg0;
5124         Mpi2ExpanderPage1_t expander_pg1;
5125         Mpi2SasEnclosurePage0_t enclosure_pg0;
5126         u32 ioc_status;
5127         u16 parent_handle;
5128         u64 sas_address, sas_address_parent = 0;
5129         int i;
5130         unsigned long flags;
5131         struct _sas_port *mpt3sas_port = NULL;
5132
5133         int rc = 0;
5134
5135         if (!handle)
5136                 return -1;
5137
5138         if (ioc->shost_recovery || ioc->pci_error_recovery)
5139                 return -1;
5140
5141         if ((mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
5142             MPI2_SAS_EXPAND_PGAD_FORM_HNDL, handle))) {
5143                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5144                     ioc->name, __FILE__, __LINE__, __func__);
5145                 return -1;
5146         }
5147
5148         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5149             MPI2_IOCSTATUS_MASK;
5150         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5151                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5152                     ioc->name, __FILE__, __LINE__, __func__);
5153                 return -1;
5154         }
5155
5156         /* handle out of order topology events */
5157         parent_handle = le16_to_cpu(expander_pg0.ParentDevHandle);
5158         if (_scsih_get_sas_address(ioc, parent_handle, &sas_address_parent)
5159             != 0) {
5160                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5161                     ioc->name, __FILE__, __LINE__, __func__);
5162                 return -1;
5163         }
5164         if (sas_address_parent != ioc->sas_hba.sas_address) {
5165                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
5166                 sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5167                     sas_address_parent);
5168                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5169                 if (!sas_expander) {
5170                         rc = _scsih_expander_add(ioc, parent_handle);
5171                         if (rc != 0)
5172                                 return rc;
5173                 }
5174         }
5175
5176         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5177         sas_address = le64_to_cpu(expander_pg0.SASAddress);
5178         sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5179             sas_address);
5180         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5181
5182         if (sas_expander)
5183                 return 0;
5184
5185         sas_expander = kzalloc(sizeof(struct _sas_node),
5186             GFP_KERNEL);
5187         if (!sas_expander) {
5188                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5189                     ioc->name, __FILE__, __LINE__, __func__);
5190                 return -1;
5191         }
5192
5193         sas_expander->handle = handle;
5194         sas_expander->num_phys = expander_pg0.NumPhys;
5195         sas_expander->sas_address_parent = sas_address_parent;
5196         sas_expander->sas_address = sas_address;
5197
5198         pr_info(MPT3SAS_FMT "expander_add: handle(0x%04x)," \
5199             " parent(0x%04x), sas_addr(0x%016llx), phys(%d)\n", ioc->name,
5200             handle, parent_handle, (unsigned long long)
5201             sas_expander->sas_address, sas_expander->num_phys);
5202
5203         if (!sas_expander->num_phys)
5204                 goto out_fail;
5205         sas_expander->phy = kcalloc(sas_expander->num_phys,
5206             sizeof(struct _sas_phy), GFP_KERNEL);
5207         if (!sas_expander->phy) {
5208                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5209                     ioc->name, __FILE__, __LINE__, __func__);
5210                 rc = -1;
5211                 goto out_fail;
5212         }
5213
5214         INIT_LIST_HEAD(&sas_expander->sas_port_list);
5215         mpt3sas_port = mpt3sas_transport_port_add(ioc, handle,
5216             sas_address_parent);
5217         if (!mpt3sas_port) {
5218                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5219                     ioc->name, __FILE__, __LINE__, __func__);
5220                 rc = -1;
5221                 goto out_fail;
5222         }
5223         sas_expander->parent_dev = &mpt3sas_port->rphy->dev;
5224
5225         for (i = 0 ; i < sas_expander->num_phys ; i++) {
5226                 if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
5227                     &expander_pg1, i, handle))) {
5228                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5229                             ioc->name, __FILE__, __LINE__, __func__);
5230                         rc = -1;
5231                         goto out_fail;
5232                 }
5233                 sas_expander->phy[i].handle = handle;
5234                 sas_expander->phy[i].phy_id = i;
5235
5236                 if ((mpt3sas_transport_add_expander_phy(ioc,
5237                     &sas_expander->phy[i], expander_pg1,
5238                     sas_expander->parent_dev))) {
5239                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5240                             ioc->name, __FILE__, __LINE__, __func__);
5241                         rc = -1;
5242                         goto out_fail;
5243                 }
5244         }
5245
5246         if (sas_expander->enclosure_handle) {
5247                 if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5248                     &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5249                    sas_expander->enclosure_handle)))
5250                         sas_expander->enclosure_logical_id =
5251                             le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5252         }
5253
5254         _scsih_expander_node_add(ioc, sas_expander);
5255          return 0;
5256
5257  out_fail:
5258
5259         if (mpt3sas_port)
5260                 mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
5261                     sas_address_parent);
5262         kfree(sas_expander);
5263         return rc;
5264 }
5265
5266 /**
5267  * mpt3sas_expander_remove - removing expander object
5268  * @ioc: per adapter object
5269  * @sas_address: expander sas_address
5270  *
5271  * Return nothing.
5272  */
5273 void
5274 mpt3sas_expander_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
5275 {
5276         struct _sas_node *sas_expander;
5277         unsigned long flags;
5278
5279         if (ioc->shost_recovery)
5280                 return;
5281
5282         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5283         sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5284             sas_address);
5285         if (sas_expander)
5286                 list_del(&sas_expander->list);
5287         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5288         if (sas_expander)
5289                 _scsih_expander_node_remove(ioc, sas_expander);
5290 }
5291
5292 /**
5293  * _scsih_done -  internal SCSI_IO callback handler.
5294  * @ioc: per adapter object
5295  * @smid: system request message index
5296  * @msix_index: MSIX table index supplied by the OS
5297  * @reply: reply message frame(lower 32bit addr)
5298  *
5299  * Callback handler when sending internal generated SCSI_IO.
5300  * The callback index passed is `ioc->scsih_cb_idx`
5301  *
5302  * Return 1 meaning mf should be freed from _base_interrupt
5303  *        0 means the mf is freed from this function.
5304  */
5305 static u8
5306 _scsih_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
5307 {
5308         MPI2DefaultReply_t *mpi_reply;
5309
5310         mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
5311         if (ioc->scsih_cmds.status == MPT3_CMD_NOT_USED)
5312                 return 1;
5313         if (ioc->scsih_cmds.smid != smid)
5314                 return 1;
5315         ioc->scsih_cmds.status |= MPT3_CMD_COMPLETE;
5316         if (mpi_reply) {
5317                 memcpy(ioc->scsih_cmds.reply, mpi_reply,
5318                     mpi_reply->MsgLength*4);
5319                 ioc->scsih_cmds.status |= MPT3_CMD_REPLY_VALID;
5320         }
5321         ioc->scsih_cmds.status &= ~MPT3_CMD_PENDING;
5322         complete(&ioc->scsih_cmds.done);
5323         return 1;
5324 }
5325
5326
5327
5328
5329 #define MPT3_MAX_LUNS (255)
5330
5331
5332 /**
5333  * _scsih_check_access_status - check access flags
5334  * @ioc: per adapter object
5335  * @sas_address: sas address
5336  * @handle: sas device handle
5337  * @access_flags: errors returned during discovery of the device
5338  *
5339  * Return 0 for success, else failure
5340  */
5341 static u8
5342 _scsih_check_access_status(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
5343         u16 handle, u8 access_status)
5344 {
5345         u8 rc = 1;
5346         char *desc = NULL;
5347
5348         switch (access_status) {
5349         case MPI2_SAS_DEVICE0_ASTATUS_NO_ERRORS:
5350         case MPI2_SAS_DEVICE0_ASTATUS_SATA_NEEDS_INITIALIZATION:
5351                 rc = 0;
5352                 break;
5353         case MPI2_SAS_DEVICE0_ASTATUS_SATA_CAPABILITY_FAILED:
5354                 desc = "sata capability failed";
5355                 break;
5356         case MPI2_SAS_DEVICE0_ASTATUS_SATA_AFFILIATION_CONFLICT:
5357                 desc = "sata affiliation conflict";
5358                 break;
5359         case MPI2_SAS_DEVICE0_ASTATUS_ROUTE_NOT_ADDRESSABLE:
5360                 desc = "route not addressable";
5361                 break;
5362         case MPI2_SAS_DEVICE0_ASTATUS_SMP_ERROR_NOT_ADDRESSABLE:
5363                 desc = "smp error not addressable";
5364                 break;
5365         case MPI2_SAS_DEVICE0_ASTATUS_DEVICE_BLOCKED:
5366                 desc = "device blocked";
5367                 break;
5368         case MPI2_SAS_DEVICE0_ASTATUS_SATA_INIT_FAILED:
5369         case MPI2_SAS_DEVICE0_ASTATUS_SIF_UNKNOWN:
5370         case MPI2_SAS_DEVICE0_ASTATUS_SIF_AFFILIATION_CONFLICT:
5371         case MPI2_SAS_DEVICE0_ASTATUS_SIF_DIAG:
5372         case MPI2_SAS_DEVICE0_ASTATUS_SIF_IDENTIFICATION:
5373         case MPI2_SAS_DEVICE0_ASTATUS_SIF_CHECK_POWER:
5374         case MPI2_SAS_DEVICE0_ASTATUS_SIF_PIO_SN:
5375         case MPI2_SAS_DEVICE0_ASTATUS_SIF_MDMA_SN:
5376         case MPI2_SAS_DEVICE0_ASTATUS_SIF_UDMA_SN:
5377         case MPI2_SAS_DEVICE0_ASTATUS_SIF_ZONING_VIOLATION:
5378         case MPI2_SAS_DEVICE0_ASTATUS_SIF_NOT_ADDRESSABLE:
5379         case MPI2_SAS_DEVICE0_ASTATUS_SIF_MAX:
5380                 desc = "sata initialization failed";
5381                 break;
5382         default:
5383                 desc = "unknown";
5384                 break;
5385         }
5386
5387         if (!rc)
5388                 return 0;
5389
5390         pr_err(MPT3SAS_FMT
5391                 "discovery errors(%s): sas_address(0x%016llx), handle(0x%04x)\n",
5392                 ioc->name, desc, (unsigned long long)sas_address, handle);
5393         return rc;
5394 }
5395
5396 /**
5397  * _scsih_check_device - checking device responsiveness
5398  * @ioc: per adapter object
5399  * @parent_sas_address: sas address of parent expander or sas host
5400  * @handle: attached device handle
5401  * @phy_numberv: phy number
5402  * @link_rate: new link rate
5403  *
5404  * Returns nothing.
5405  */
5406 static void
5407 _scsih_check_device(struct MPT3SAS_ADAPTER *ioc,
5408         u64 parent_sas_address, u16 handle, u8 phy_number, u8 link_rate)
5409 {
5410         Mpi2ConfigReply_t mpi_reply;
5411         Mpi2SasDevicePage0_t sas_device_pg0;
5412         struct _sas_device *sas_device;
5413         u32 ioc_status;
5414         unsigned long flags;
5415         u64 sas_address;
5416         struct scsi_target *starget;
5417         struct MPT3SAS_TARGET *sas_target_priv_data;
5418         u32 device_info;
5419
5420
5421         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5422             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle)))
5423                 return;
5424
5425         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
5426         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
5427                 return;
5428
5429         /* wide port handling ~ we need only handle device once for the phy that
5430          * is matched in sas device page zero
5431          */
5432         if (phy_number != sas_device_pg0.PhyNum)
5433                 return;
5434
5435         /* check if this is end device */
5436         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5437         if (!(_scsih_is_end_device(device_info)))
5438                 return;
5439
5440         spin_lock_irqsave(&ioc->sas_device_lock, flags);
5441         sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5442         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
5443             sas_address);
5444
5445         if (!sas_device)
5446                 goto out_unlock;
5447
5448         if (unlikely(sas_device->handle != handle)) {
5449                 starget = sas_device->starget;
5450                 sas_target_priv_data = starget->hostdata;
5451                 starget_printk(KERN_INFO, starget,
5452                         "handle changed from(0x%04x) to (0x%04x)!!!\n",
5453                         sas_device->handle, handle);
5454                 sas_target_priv_data->handle = handle;
5455                 sas_device->handle = handle;
5456                 if (le16_to_cpu(sas_device_pg0.Flags) &
5457                      MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5458                         sas_device->enclosure_level =
5459                                 sas_device_pg0.EnclosureLevel;
5460                         memcpy(sas_device->connector_name,
5461                                 sas_device_pg0.ConnectorName, 4);
5462                         sas_device->connector_name[4] = '\0';
5463                 } else {
5464                         sas_device->enclosure_level = 0;
5465                         sas_device->connector_name[0] = '\0';
5466                 }
5467         }
5468
5469         /* check if device is present */
5470         if (!(le16_to_cpu(sas_device_pg0.Flags) &
5471             MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5472                 pr_err(MPT3SAS_FMT
5473                         "device is not present handle(0x%04x), flags!!!\n",
5474                         ioc->name, handle);
5475                 goto out_unlock;
5476         }
5477
5478         /* check if there were any issues with discovery */
5479         if (_scsih_check_access_status(ioc, sas_address, handle,
5480             sas_device_pg0.AccessStatus))
5481                 goto out_unlock;
5482
5483         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5484         _scsih_ublock_io_device(ioc, sas_address);
5485
5486         if (sas_device)
5487                 sas_device_put(sas_device);
5488         return;
5489
5490 out_unlock:
5491         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5492         if (sas_device)
5493                 sas_device_put(sas_device);
5494 }
5495
5496 /**
5497  * _scsih_add_device -  creating sas device object
5498  * @ioc: per adapter object
5499  * @handle: sas device handle
5500  * @phy_num: phy number end device attached to
5501  * @is_pd: is this hidden raid component
5502  *
5503  * Creating end device object, stored in ioc->sas_device_list.
5504  *
5505  * Returns 0 for success, non-zero for failure.
5506  */
5507 static int
5508 _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phy_num,
5509         u8 is_pd)
5510 {
5511         Mpi2ConfigReply_t mpi_reply;
5512         Mpi2SasDevicePage0_t sas_device_pg0;
5513         Mpi2SasEnclosurePage0_t enclosure_pg0;
5514         struct _sas_device *sas_device;
5515         u32 ioc_status;
5516         u64 sas_address;
5517         u32 device_info;
5518
5519         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5520             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
5521                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5522                     ioc->name, __FILE__, __LINE__, __func__);
5523                 return -1;
5524         }
5525
5526         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5527             MPI2_IOCSTATUS_MASK;
5528         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5529                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5530                     ioc->name, __FILE__, __LINE__, __func__);
5531                 return -1;
5532         }
5533
5534         /* check if this is end device */
5535         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5536         if (!(_scsih_is_end_device(device_info)))
5537                 return -1;
5538         set_bit(handle, ioc->pend_os_device_add);
5539         sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5540
5541         /* check if device is present */
5542         if (!(le16_to_cpu(sas_device_pg0.Flags) &
5543             MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5544                 pr_err(MPT3SAS_FMT "device is not present handle(0x04%x)!!!\n",
5545                         ioc->name, handle);
5546                 return -1;
5547         }
5548
5549         /* check if there were any issues with discovery */
5550         if (_scsih_check_access_status(ioc, sas_address, handle,
5551             sas_device_pg0.AccessStatus))
5552                 return -1;
5553
5554         sas_device = mpt3sas_get_sdev_by_addr(ioc,
5555                                         sas_address);
5556         if (sas_device) {
5557                 clear_bit(handle, ioc->pend_os_device_add);
5558                 sas_device_put(sas_device);
5559                 return -1;
5560         }
5561
5562         sas_device = kzalloc(sizeof(struct _sas_device),
5563             GFP_KERNEL);
5564         if (!sas_device) {
5565                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5566                     ioc->name, __FILE__, __LINE__, __func__);
5567                 return 0;
5568         }
5569
5570         kref_init(&sas_device->refcount);
5571         sas_device->handle = handle;
5572         if (_scsih_get_sas_address(ioc,
5573             le16_to_cpu(sas_device_pg0.ParentDevHandle),
5574             &sas_device->sas_address_parent) != 0)
5575                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5576                     ioc->name, __FILE__, __LINE__, __func__);
5577         sas_device->enclosure_handle =
5578             le16_to_cpu(sas_device_pg0.EnclosureHandle);
5579         if (sas_device->enclosure_handle != 0)
5580                 sas_device->slot =
5581                     le16_to_cpu(sas_device_pg0.Slot);
5582         sas_device->device_info = device_info;
5583         sas_device->sas_address = sas_address;
5584         sas_device->phy = sas_device_pg0.PhyNum;
5585         sas_device->fast_path = (le16_to_cpu(sas_device_pg0.Flags) &
5586             MPI25_SAS_DEVICE0_FLAGS_FAST_PATH_CAPABLE) ? 1 : 0;
5587
5588         if (le16_to_cpu(sas_device_pg0.Flags)
5589                 & MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5590                 sas_device->enclosure_level =
5591                         sas_device_pg0.EnclosureLevel;
5592                 memcpy(sas_device->connector_name,
5593                         sas_device_pg0.ConnectorName, 4);
5594                 sas_device->connector_name[4] = '\0';
5595         } else {
5596                 sas_device->enclosure_level = 0;
5597                 sas_device->connector_name[0] = '\0';
5598         }
5599         /* get enclosure_logical_id */
5600         if (sas_device->enclosure_handle && !(mpt3sas_config_get_enclosure_pg0(
5601            ioc, &mpi_reply, &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5602            sas_device->enclosure_handle)))
5603                 sas_device->enclosure_logical_id =
5604                     le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5605
5606         /* get device name */
5607         sas_device->device_name = le64_to_cpu(sas_device_pg0.DeviceName);
5608
5609         if (ioc->wait_for_discovery_to_complete)
5610                 _scsih_sas_device_init_add(ioc, sas_device);
5611         else
5612                 _scsih_sas_device_add(ioc, sas_device);
5613
5614         sas_device_put(sas_device);
5615         return 0;
5616 }
5617
5618 /**
5619  * _scsih_remove_device -  removing sas device object
5620  * @ioc: per adapter object
5621  * @sas_device_delete: the sas_device object
5622  *
5623  * Return nothing.
5624  */
5625 static void
5626 _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
5627         struct _sas_device *sas_device)
5628 {
5629         struct MPT3SAS_TARGET *sas_target_priv_data;
5630
5631         if ((ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM) &&
5632              (sas_device->pfa_led_on)) {
5633                 _scsih_turn_off_pfa_led(ioc, sas_device);
5634                 sas_device->pfa_led_on = 0;
5635         }
5636         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5637                 "%s: enter: handle(0x%04x), sas_addr(0x%016llx)\n",
5638                 ioc->name, __func__,
5639             sas_device->handle, (unsigned long long)
5640             sas_device->sas_address));
5641         if (sas_device->enclosure_handle != 0)
5642                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5643                     "%s: enter: enclosure logical id(0x%016llx), slot(%d)\n",
5644                     ioc->name, __func__,
5645                     (unsigned long long)sas_device->enclosure_logical_id,
5646                     sas_device->slot));
5647         if (sas_device->connector_name[0] != '\0')
5648                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5649                   "%s: enter: enclosure level(0x%04x), connector name( %s)\n",
5650                   ioc->name, __func__,
5651                   sas_device->enclosure_level,
5652                   sas_device->connector_name));
5653
5654         if (sas_device->starget && sas_device->starget->hostdata) {
5655                 sas_target_priv_data = sas_device->starget->hostdata;
5656                 sas_target_priv_data->deleted = 1;
5657                 _scsih_ublock_io_device(ioc, sas_device->sas_address);
5658                 sas_target_priv_data->handle =
5659                      MPT3SAS_INVALID_DEVICE_HANDLE;
5660         }
5661
5662         if (!ioc->hide_drives)
5663                 mpt3sas_transport_port_remove(ioc,
5664                     sas_device->sas_address,
5665                     sas_device->sas_address_parent);
5666
5667         pr_info(MPT3SAS_FMT
5668                 "removing handle(0x%04x), sas_addr(0x%016llx)\n",
5669                 ioc->name, sas_device->handle,
5670             (unsigned long long) sas_device->sas_address);
5671         if (sas_device->enclosure_handle != 0)
5672                 pr_info(MPT3SAS_FMT
5673                   "removing : enclosure logical id(0x%016llx), slot(%d)\n",
5674                   ioc->name,
5675                   (unsigned long long)sas_device->enclosure_logical_id,
5676                   sas_device->slot);
5677         if (sas_device->connector_name[0] != '\0')
5678                 pr_info(MPT3SAS_FMT
5679                   "removing enclosure level(0x%04x), connector name( %s)\n",
5680                   ioc->name, sas_device->enclosure_level,
5681                   sas_device->connector_name);
5682
5683         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5684                 "%s: exit: handle(0x%04x), sas_addr(0x%016llx)\n",
5685                 ioc->name, __func__,
5686                 sas_device->handle, (unsigned long long)
5687                 sas_device->sas_address));
5688         if (sas_device->enclosure_handle != 0)
5689                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5690                     "%s: exit: enclosure logical id(0x%016llx), slot(%d)\n",
5691                     ioc->name, __func__,
5692                     (unsigned long long)sas_device->enclosure_logical_id,
5693                     sas_device->slot));
5694         if (sas_device->connector_name[0] != '\0')
5695                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5696                     "%s: exit: enclosure level(0x%04x), connector name(%s)\n",
5697                     ioc->name, __func__, sas_device->enclosure_level,
5698                     sas_device->connector_name));
5699 }
5700
5701 /**
5702  * _scsih_sas_topology_change_event_debug - debug for topology event
5703  * @ioc: per adapter object
5704  * @event_data: event data payload
5705  * Context: user.
5706  */
5707 static void
5708 _scsih_sas_topology_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5709         Mpi2EventDataSasTopologyChangeList_t *event_data)
5710 {
5711         int i;
5712         u16 handle;
5713         u16 reason_code;
5714         u8 phy_number;
5715         char *status_str = NULL;
5716         u8 link_rate, prev_link_rate;
5717
5718         switch (event_data->ExpStatus) {
5719         case MPI2_EVENT_SAS_TOPO_ES_ADDED:
5720                 status_str = "add";
5721                 break;
5722         case MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
5723                 status_str = "remove";
5724                 break;
5725         case MPI2_EVENT_SAS_TOPO_ES_RESPONDING:
5726         case 0:
5727                 status_str =  "responding";
5728                 break;
5729         case MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
5730                 status_str = "remove delay";
5731                 break;
5732         default:
5733                 status_str = "unknown status";
5734                 break;
5735         }
5736         pr_info(MPT3SAS_FMT "sas topology change: (%s)\n",
5737             ioc->name, status_str);
5738         pr_info("\thandle(0x%04x), enclosure_handle(0x%04x) " \
5739             "start_phy(%02d), count(%d)\n",
5740             le16_to_cpu(event_data->ExpanderDevHandle),
5741             le16_to_cpu(event_data->EnclosureHandle),
5742             event_data->StartPhyNum, event_data->NumEntries);
5743         for (i = 0; i < event_data->NumEntries; i++) {
5744                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5745                 if (!handle)
5746                         continue;
5747                 phy_number = event_data->StartPhyNum + i;
5748                 reason_code = event_data->PHY[i].PhyStatus &
5749                     MPI2_EVENT_SAS_TOPO_RC_MASK;
5750                 switch (reason_code) {
5751                 case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5752                         status_str = "target add";
5753                         break;
5754                 case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5755                         status_str = "target remove";
5756                         break;
5757                 case MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING:
5758                         status_str = "delay target remove";
5759                         break;
5760                 case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5761                         status_str = "link rate change";
5762                         break;
5763                 case MPI2_EVENT_SAS_TOPO_RC_NO_CHANGE:
5764                         status_str = "target responding";
5765                         break;
5766                 default:
5767                         status_str = "unknown";
5768                         break;
5769                 }
5770                 link_rate = event_data->PHY[i].LinkRate >> 4;
5771                 prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5772                 pr_info("\tphy(%02d), attached_handle(0x%04x): %s:" \
5773                     " link rate: new(0x%02x), old(0x%02x)\n", phy_number,
5774                     handle, status_str, link_rate, prev_link_rate);
5775
5776         }
5777 }
5778
5779 /**
5780  * _scsih_sas_topology_change_event - handle topology changes
5781  * @ioc: per adapter object
5782  * @fw_event: The fw_event_work object
5783  * Context: user.
5784  *
5785  */
5786 static int
5787 _scsih_sas_topology_change_event(struct MPT3SAS_ADAPTER *ioc,
5788         struct fw_event_work *fw_event)
5789 {
5790         int i;
5791         u16 parent_handle, handle;
5792         u16 reason_code;
5793         u8 phy_number, max_phys;
5794         struct _sas_node *sas_expander;
5795         u64 sas_address;
5796         unsigned long flags;
5797         u8 link_rate, prev_link_rate;
5798         Mpi2EventDataSasTopologyChangeList_t *event_data =
5799                 (Mpi2EventDataSasTopologyChangeList_t *)
5800                 fw_event->event_data;
5801
5802         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5803                 _scsih_sas_topology_change_event_debug(ioc, event_data);
5804
5805         if (ioc->shost_recovery || ioc->remove_host || ioc->pci_error_recovery)
5806                 return 0;
5807
5808         if (!ioc->sas_hba.num_phys)
5809                 _scsih_sas_host_add(ioc);
5810         else
5811                 _scsih_sas_host_refresh(ioc);
5812
5813         if (fw_event->ignore) {
5814                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5815                         "ignoring expander event\n", ioc->name));
5816                 return 0;
5817         }
5818
5819         parent_handle = le16_to_cpu(event_data->ExpanderDevHandle);
5820
5821         /* handle expander add */
5822         if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_ADDED)
5823                 if (_scsih_expander_add(ioc, parent_handle) != 0)
5824                         return 0;
5825
5826         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5827         sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
5828             parent_handle);
5829         if (sas_expander) {
5830                 sas_address = sas_expander->sas_address;
5831                 max_phys = sas_expander->num_phys;
5832         } else if (parent_handle < ioc->sas_hba.num_phys) {
5833                 sas_address = ioc->sas_hba.sas_address;
5834                 max_phys = ioc->sas_hba.num_phys;
5835         } else {
5836                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5837                 return 0;
5838         }
5839         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5840
5841         /* handle siblings events */
5842         for (i = 0; i < event_data->NumEntries; i++) {
5843                 if (fw_event->ignore) {
5844                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5845                                 "ignoring expander event\n", ioc->name));
5846                         return 0;
5847                 }
5848                 if (ioc->remove_host || ioc->pci_error_recovery)
5849                         return 0;
5850                 phy_number = event_data->StartPhyNum + i;
5851                 if (phy_number >= max_phys)
5852                         continue;
5853                 reason_code = event_data->PHY[i].PhyStatus &
5854                     MPI2_EVENT_SAS_TOPO_RC_MASK;
5855                 if ((event_data->PHY[i].PhyStatus &
5856                     MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT) && (reason_code !=
5857                     MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING))
5858                                 continue;
5859                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5860                 if (!handle)
5861                         continue;
5862                 link_rate = event_data->PHY[i].LinkRate >> 4;
5863                 prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5864                 switch (reason_code) {
5865                 case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5866
5867                         if (ioc->shost_recovery)
5868                                 break;
5869
5870                         if (link_rate == prev_link_rate)
5871                                 break;
5872
5873                         mpt3sas_transport_update_links(ioc, sas_address,
5874                             handle, phy_number, link_rate);
5875
5876                         if (link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
5877                                 break;
5878
5879                         _scsih_check_device(ioc, sas_address, handle,
5880                             phy_number, link_rate);
5881
5882                         if (!test_bit(handle, ioc->pend_os_device_add))
5883                                 break;
5884
5885
5886                 case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5887
5888                         if (ioc->shost_recovery)
5889                                 break;
5890
5891                         mpt3sas_transport_update_links(ioc, sas_address,
5892                             handle, phy_number, link_rate);
5893
5894                         _scsih_add_device(ioc, handle, phy_number, 0);
5895
5896                         break;
5897                 case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5898
5899                         _scsih_device_remove_by_handle(ioc, handle);
5900                         break;
5901                 }
5902         }
5903
5904         /* handle expander removal */
5905         if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING &&
5906             sas_expander)
5907                 mpt3sas_expander_remove(ioc, sas_address);
5908
5909         return 0;
5910 }
5911
5912 /**
5913  * _scsih_sas_device_status_change_event_debug - debug for device event
5914  * @event_data: event data payload
5915  * Context: user.
5916  *
5917  * Return nothing.
5918  */
5919 static void
5920 _scsih_sas_device_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5921         Mpi2EventDataSasDeviceStatusChange_t *event_data)
5922 {
5923         char *reason_str = NULL;
5924
5925         switch (event_data->ReasonCode) {
5926         case MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA:
5927                 reason_str = "smart data";
5928                 break;
5929         case MPI2_EVENT_SAS_DEV_STAT_RC_UNSUPPORTED:
5930                 reason_str = "unsupported device discovered";
5931                 break;
5932         case MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET:
5933                 reason_str = "internal device reset";
5934                 break;
5935         case MPI2_EVENT_SAS_DEV_STAT_RC_TASK_ABORT_INTERNAL:
5936                 reason_str = "internal task abort";
5937                 break;
5938         case MPI2_EVENT_SAS_DEV_STAT_RC_ABORT_TASK_SET_INTERNAL:
5939                 reason_str = "internal task abort set";
5940                 break;
5941         case MPI2_EVENT_SAS_DEV_STAT_RC_CLEAR_TASK_SET_INTERNAL:
5942                 reason_str = "internal clear task set";
5943                 break;
5944         case MPI2_EVENT_SAS_DEV_STAT_RC_QUERY_TASK_INTERNAL:
5945                 reason_str = "internal query task";
5946                 break;
5947         case MPI2_EVENT_SAS_DEV_STAT_RC_SATA_INIT_FAILURE:
5948                 reason_str = "sata init failure";
5949                 break;
5950         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET:
5951                 reason_str = "internal device reset complete";
5952                 break;
5953         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_TASK_ABORT_INTERNAL:
5954                 reason_str = "internal task abort complete";
5955                 break;
5956         case MPI2_EVENT_SAS_DEV_STAT_RC_ASYNC_NOTIFICATION:
5957                 reason_str = "internal async notification";
5958                 break;
5959         case MPI2_EVENT_SAS_DEV_STAT_RC_EXPANDER_REDUCED_FUNCTIONALITY:
5960                 reason_str = "expander reduced functionality";
5961                 break;
5962         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_EXPANDER_REDUCED_FUNCTIONALITY:
5963                 reason_str = "expander reduced functionality complete";
5964                 break;
5965         default:
5966                 reason_str = "unknown reason";
5967                 break;
5968         }
5969         pr_info(MPT3SAS_FMT "device status change: (%s)\n"
5970             "\thandle(0x%04x), sas address(0x%016llx), tag(%d)",
5971             ioc->name, reason_str, le16_to_cpu(event_data->DevHandle),
5972             (unsigned long long)le64_to_cpu(event_data->SASAddress),
5973             le16_to_cpu(event_data->TaskTag));
5974         if (event_data->ReasonCode == MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA)
5975                 pr_info(MPT3SAS_FMT ", ASC(0x%x), ASCQ(0x%x)\n", ioc->name,
5976                     event_data->ASC, event_data->ASCQ);
5977         pr_info("\n");
5978 }
5979
5980 /**
5981  * _scsih_sas_device_status_change_event - handle device status change
5982  * @ioc: per adapter object
5983  * @fw_event: The fw_event_work object
5984  * Context: user.
5985  *
5986  * Return nothing.
5987  */
5988 static void
5989 _scsih_sas_device_status_change_event(struct MPT3SAS_ADAPTER *ioc,
5990         struct fw_event_work *fw_event)
5991 {
5992         struct MPT3SAS_TARGET *target_priv_data;
5993         struct _sas_device *sas_device;
5994         u64 sas_address;
5995         unsigned long flags;
5996         Mpi2EventDataSasDeviceStatusChange_t *event_data =
5997                 (Mpi2EventDataSasDeviceStatusChange_t *)
5998                 fw_event->event_data;
5999
6000         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
6001                 _scsih_sas_device_status_change_event_debug(ioc,
6002                      event_data);
6003
6004         /* In MPI Revision K (0xC), the internal device reset complete was
6005          * implemented, so avoid setting tm_busy flag for older firmware.
6006          */
6007         if ((ioc->facts.HeaderVersion >> 8) < 0xC)
6008                 return;
6009
6010         if (event_data->ReasonCode !=
6011             MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET &&
6012            event_data->ReasonCode !=
6013             MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET)
6014                 return;
6015
6016         spin_lock_irqsave(&ioc->sas_device_lock, flags);
6017         sas_address = le64_to_cpu(event_data->SASAddress);
6018         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
6019             sas_address);
6020
6021         if (!sas_device || !sas_device->starget)
6022                 goto out;
6023
6024         target_priv_data = sas_device->starget->hostdata;
6025         if (!target_priv_data)
6026                 goto out;
6027
6028         if (event_data->ReasonCode ==
6029             MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET)
6030                 target_priv_data->tm_busy = 1;
6031         else
6032                 target_priv_data->tm_busy = 0;
6033
6034 out:
6035         if (sas_device)
6036                 sas_device_put(sas_device);
6037
6038         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6039
6040 }
6041
6042 /**
6043  * _scsih_sas_enclosure_dev_status_change_event_debug - debug for enclosure
6044  * event
6045  * @ioc: per adapter object
6046  * @event_data: event data payload
6047  * Context: user.
6048  *
6049  * Return nothing.
6050  */
6051 static void
6052 _scsih_sas_enclosure_dev_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
6053         Mpi2EventDataSasEnclDevStatusChange_t *event_data)
6054 {
6055         char *reason_str = NULL;
6056
6057         switch (event_data->ReasonCode) {
6058         case MPI2_EVENT_SAS_ENCL_RC_ADDED:
6059                 reason_str = "enclosure add";
6060                 break;
6061         case MPI2_EVENT_SAS_ENCL_RC_NOT_RESPONDING:
6062                 reason_str = "enclosure remove";
6063                 break;
6064         default:
6065                 reason_str = "unknown reason";
6066                 break;
6067         }
6068
6069         pr_info(MPT3SAS_FMT "enclosure status change: (%s)\n"
6070             "\thandle(0x%04x), enclosure logical id(0x%016llx)"
6071             " number slots(%d)\n", ioc->name, reason_str,
6072             le16_to_cpu(event_data->EnclosureHandle),
6073             (unsigned long long)le64_to_cpu(event_data->EnclosureLogicalID),
6074             le16_to_cpu(event_data->StartSlot));
6075 }
6076
6077 /**
6078  * _scsih_sas_enclosure_dev_status_change_event - handle enclosure events
6079  * @ioc: per adapter object
6080  * @fw_event: The fw_event_work object
6081  * Context: user.
6082  *
6083  * Return nothing.
6084  */
6085 static void
6086 _scsih_sas_enclosure_dev_status_change_event(struct MPT3SAS_ADAPTER *ioc,
6087         struct fw_event_work *fw_event)
6088 {
6089         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
6090                 _scsih_sas_enclosure_dev_status_change_event_debug(ioc,
6091                      (Mpi2EventDataSasEnclDevStatusChange_t *)
6092                      fw_event->event_data);
6093 }
6094
6095 /**
6096  * _scsih_sas_broadcast_primitive_event - handle broadcast events
6097  * @ioc: per adapter object
6098  * @fw_event: The fw_event_work object
6099  * Context: user.
6100  *
6101  * Return nothing.
6102  */
6103 static void
6104 _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
6105         struct fw_event_work *fw_event)
6106 {
6107         struct scsi_cmnd *scmd;
6108         struct scsi_device *sdev;
6109         u16 smid, handle;
6110         u32 lun;
6111         struct MPT3SAS_DEVICE *sas_device_priv_data;
6112         u32 termination_count;
6113         u32 query_count;
6114         Mpi2SCSITaskManagementReply_t *mpi_reply;
6115         Mpi2EventDataSasBroadcastPrimitive_t *event_data =
6116                 (Mpi2EventDataSasBroadcastPrimitive_t *)
6117                 fw_event->event_data;
6118         u16 ioc_status;
6119         unsigned long flags;
6120         int r;
6121         u8 max_retries = 0;
6122         u8 task_abort_retries;
6123
6124         mutex_lock(&ioc->tm_cmds.mutex);
6125         pr_info(MPT3SAS_FMT
6126                 "%s: enter: phy number(%d), width(%d)\n",
6127                 ioc->name, __func__, event_data->PhyNum,
6128              event_data->PortWidth);
6129
6130         _scsih_block_io_all_device(ioc);
6131
6132         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6133         mpi_reply = ioc->tm_cmds.reply;
6134  broadcast_aen_retry:
6135
6136         /* sanity checks for retrying this loop */
6137         if (max_retries++ == 5) {
6138                 dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: giving up\n",
6139                     ioc->name, __func__));
6140                 goto out;
6141         } else if (max_retries > 1)
6142                 dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: %d retry\n",
6143                     ioc->name, __func__, max_retries - 1));
6144
6145         termination_count = 0;
6146         query_count = 0;
6147         for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
6148                 if (ioc->shost_recovery)
6149                         goto out;
6150                 scmd = _scsih_scsi_lookup_get(ioc, smid);
6151                 if (!scmd)
6152                         continue;
6153                 sdev = scmd->device;
6154                 sas_device_priv_data = sdev->hostdata;
6155                 if (!sas_device_priv_data || !sas_device_priv_data->sas_target)
6156                         continue;
6157                  /* skip hidden raid components */
6158                 if (sas_device_priv_data->sas_target->flags &
6159                     MPT_TARGET_FLAGS_RAID_COMPONENT)
6160                         continue;
6161                  /* skip volumes */
6162                 if (sas_device_priv_data->sas_target->flags &
6163                     MPT_TARGET_FLAGS_VOLUME)
6164                         continue;
6165
6166                 handle = sas_device_priv_data->sas_target->handle;
6167                 lun = sas_device_priv_data->lun;
6168                 query_count++;
6169
6170                 if (ioc->shost_recovery)
6171                         goto out;
6172
6173                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6174                 r = mpt3sas_scsih_issue_tm(ioc, handle, 0, 0, lun,
6175                     MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK, smid, 30);
6176                 if (r == FAILED) {
6177                         sdev_printk(KERN_WARNING, sdev,
6178                             "mpt3sas_scsih_issue_tm: FAILED when sending "
6179                             "QUERY_TASK: scmd(%p)\n", scmd);
6180                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6181                         goto broadcast_aen_retry;
6182                 }
6183                 ioc_status = le16_to_cpu(mpi_reply->IOCStatus)
6184                     & MPI2_IOCSTATUS_MASK;
6185                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6186                         sdev_printk(KERN_WARNING, sdev,
6187                                 "query task: FAILED with IOCSTATUS(0x%04x), scmd(%p)\n",
6188                                 ioc_status, scmd);
6189                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6190                         goto broadcast_aen_retry;
6191                 }
6192
6193                 /* see if IO is still owned by IOC and target */
6194                 if (mpi_reply->ResponseCode ==
6195                      MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED ||
6196                      mpi_reply->ResponseCode ==
6197                      MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC) {
6198                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6199                         continue;
6200                 }
6201                 task_abort_retries = 0;
6202  tm_retry:
6203                 if (task_abort_retries++ == 60) {
6204                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6205                             "%s: ABORT_TASK: giving up\n", ioc->name,
6206                             __func__));
6207                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6208                         goto broadcast_aen_retry;
6209                 }
6210
6211                 if (ioc->shost_recovery)
6212                         goto out_no_lock;
6213
6214                 r = mpt3sas_scsih_issue_tm(ioc, handle, sdev->channel, sdev->id,
6215                     sdev->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid,
6216                     30);
6217                 if (r == FAILED) {
6218                         sdev_printk(KERN_WARNING, sdev,
6219                             "mpt3sas_scsih_issue_tm: ABORT_TASK: FAILED : "
6220                             "scmd(%p)\n", scmd);
6221                         goto tm_retry;
6222                 }
6223
6224                 if (task_abort_retries > 1)
6225                         sdev_printk(KERN_WARNING, sdev,
6226                             "mpt3sas_scsih_issue_tm: ABORT_TASK: RETRIES (%d):"
6227                             " scmd(%p)\n",
6228                             task_abort_retries - 1, scmd);
6229
6230                 termination_count += le32_to_cpu(mpi_reply->TerminationCount);
6231                 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6232         }
6233
6234         if (ioc->broadcast_aen_pending) {
6235                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6236                         "%s: loop back due to pending AEN\n",
6237                         ioc->name, __func__));
6238                  ioc->broadcast_aen_pending = 0;
6239                  goto broadcast_aen_retry;
6240         }
6241
6242  out:
6243         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6244  out_no_lock:
6245
6246         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6247             "%s - exit, query_count = %d termination_count = %d\n",
6248             ioc->name, __func__, query_count, termination_count));
6249
6250         ioc->broadcast_aen_busy = 0;
6251         if (!ioc->shost_recovery)
6252                 _scsih_ublock_io_all_device(ioc);
6253         mutex_unlock(&ioc->tm_cmds.mutex);
6254 }
6255
6256 /**
6257  * _scsih_sas_discovery_event - handle discovery events
6258  * @ioc: per adapter object
6259  * @fw_event: The fw_event_work object
6260  * Context: user.
6261  *
6262  * Return nothing.
6263  */
6264 static void
6265 _scsih_sas_discovery_event(struct MPT3SAS_ADAPTER *ioc,
6266         struct fw_event_work *fw_event)
6267 {
6268         Mpi2EventDataSasDiscovery_t *event_data =
6269                 (Mpi2EventDataSasDiscovery_t *) fw_event->event_data;
6270
6271         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) {
6272                 pr_info(MPT3SAS_FMT "discovery event: (%s)", ioc->name,
6273                     (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
6274                     "start" : "stop");
6275                 if (event_data->DiscoveryStatus)
6276                         pr_info("discovery_status(0x%08x)",
6277                             le32_to_cpu(event_data->DiscoveryStatus));
6278                 pr_info("\n");
6279         }
6280
6281         if (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED &&
6282             !ioc->sas_hba.num_phys) {
6283                 if (disable_discovery > 0 && ioc->shost_recovery) {
6284                         /* Wait for the reset to complete */
6285                         while (ioc->shost_recovery)
6286                                 ssleep(1);
6287                 }
6288                 _scsih_sas_host_add(ioc);
6289         }
6290 }
6291
6292 /**
6293  * _scsih_ir_fastpath - turn on fastpath for IR physdisk
6294  * @ioc: per adapter object
6295  * @handle: device handle for physical disk
6296  * @phys_disk_num: physical disk number
6297  *
6298  * Return 0 for success, else failure.
6299  */
6300 static int
6301 _scsih_ir_fastpath(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phys_disk_num)
6302 {
6303         Mpi2RaidActionRequest_t *mpi_request;
6304         Mpi2RaidActionReply_t *mpi_reply;
6305         u16 smid;
6306         u8 issue_reset = 0;
6307         int rc = 0;
6308         u16 ioc_status;
6309         u32 log_info;
6310
6311         if (ioc->hba_mpi_version_belonged == MPI2_VERSION)
6312                 return rc;
6313
6314         mutex_lock(&ioc->scsih_cmds.mutex);
6315
6316         if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
6317                 pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
6318                     ioc->name, __func__);
6319                 rc = -EAGAIN;
6320                 goto out;
6321         }
6322         ioc->scsih_cmds.status = MPT3_CMD_PENDING;
6323
6324         smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
6325         if (!smid) {
6326                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
6327                     ioc->name, __func__);
6328                 ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6329                 rc = -EAGAIN;
6330                 goto out;
6331         }
6332
6333         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
6334         ioc->scsih_cmds.smid = smid;
6335         memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
6336
6337         mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
6338         mpi_request->Action = MPI2_RAID_ACTION_PHYSDISK_HIDDEN;
6339         mpi_request->PhysDiskNum = phys_disk_num;
6340
6341         dewtprintk(ioc, pr_info(MPT3SAS_FMT "IR RAID_ACTION: turning fast "\
6342             "path on for handle(0x%04x), phys_disk_num (0x%02x)\n", ioc->name,
6343             handle, phys_disk_num));
6344
6345         init_completion(&ioc->scsih_cmds.done);
6346         ioc->put_smid_default(ioc, smid);
6347         wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
6348
6349         if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
6350                 pr_err(MPT3SAS_FMT "%s: timeout\n",
6351                     ioc->name, __func__);
6352                 if (!(ioc->scsih_cmds.status & MPT3_CMD_RESET))
6353                         issue_reset = 1;
6354                 rc = -EFAULT;
6355                 goto out;
6356         }
6357
6358         if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
6359
6360                 mpi_reply = ioc->scsih_cmds.reply;
6361                 ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
6362                 if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
6363                         log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
6364                 else
6365                         log_info = 0;
6366                 ioc_status &= MPI2_IOCSTATUS_MASK;
6367                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6368                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6369                             "IR RAID_ACTION: failed: ioc_status(0x%04x), "
6370                             "loginfo(0x%08x)!!!\n", ioc->name, ioc_status,
6371                             log_info));
6372                         rc = -EFAULT;
6373                 } else
6374                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6375                             "IR RAID_ACTION: completed successfully\n",
6376                             ioc->name));
6377         }
6378
6379  out:
6380         ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6381         mutex_unlock(&ioc->scsih_cmds.mutex);
6382
6383         if (issue_reset)
6384                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
6385         return rc;
6386 }
6387
6388 /**
6389  * _scsih_reprobe_lun - reprobing lun
6390  * @sdev: scsi device struct
6391  * @no_uld_attach: sdev->no_uld_attach flag setting
6392  *
6393  **/
6394 static void
6395 _scsih_reprobe_lun(struct scsi_device *sdev, void *no_uld_attach)
6396 {
6397         sdev->no_uld_attach = no_uld_attach ? 1 : 0;
6398         sdev_printk(KERN_INFO, sdev, "%s raid component\n",
6399             sdev->no_uld_attach ? "hiding" : "exposing");
6400         WARN_ON(scsi_device_reprobe(sdev));
6401 }
6402
6403 /**
6404  * _scsih_sas_volume_add - add new volume
6405  * @ioc: per adapter object
6406  * @element: IR config element data
6407  * Context: user.
6408  *
6409  * Return nothing.
6410  */
6411 static void
6412 _scsih_sas_volume_add(struct MPT3SAS_ADAPTER *ioc,
6413         Mpi2EventIrConfigElement_t *element)
6414 {
6415         struct _raid_device *raid_device;
6416         unsigned long flags;
6417         u64 wwid;
6418         u16 handle = le16_to_cpu(element->VolDevHandle);
6419         int rc;
6420
6421         mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6422         if (!wwid) {
6423                 pr_err(MPT3SAS_FMT
6424                     "failure at %s:%d/%s()!\n", ioc->name,
6425                     __FILE__, __LINE__, __func__);
6426                 return;
6427         }
6428
6429         spin_lock_irqsave(&ioc->raid_device_lock, flags);
6430         raid_device = _scsih_raid_device_find_by_wwid(ioc, wwid);
6431         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6432
6433         if (raid_device)
6434                 return;
6435
6436         raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6437         if (!raid_device) {
6438                 pr_err(MPT3SAS_FMT
6439                     "failure at %s:%d/%s()!\n", ioc->name,
6440                     __FILE__, __LINE__, __func__);
6441                 return;
6442         }
6443
6444         raid_device->id = ioc->sas_id++;
6445         raid_device->channel = RAID_CHANNEL;
6446         raid_device->handle = handle;
6447         raid_device->wwid = wwid;
6448         _scsih_raid_device_add(ioc, raid_device);
6449         if (!ioc->wait_for_discovery_to_complete) {
6450                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6451                     raid_device->id, 0);
6452                 if (rc)
6453                         _scsih_raid_device_remove(ioc, raid_device);
6454         } else {
6455                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
6456                 _scsih_determine_boot_device(ioc, raid_device, 1);
6457                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6458         }
6459 }
6460
6461 /**
6462  * _scsih_sas_volume_delete - delete volume
6463  * @ioc: per adapter object
6464  * @handle: volume device handle
6465  * Context: user.
6466  *
6467  * Return nothing.
6468  */
6469 static void
6470 _scsih_sas_volume_delete(struct MPT3SAS_ADAPTER *ioc, u16 handle)
6471 {
6472         struct _raid_device *raid_device;
6473         unsigned long flags;
6474         struct MPT3SAS_TARGET *sas_target_priv_data;
6475         struct scsi_target *starget = NULL;
6476
6477         spin_lock_irqsave(&ioc->raid_device_lock, flags);
6478         raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6479         if (raid_device) {
6480                 if (raid_device->starget) {
6481                         starget = raid_device->starget;
6482                         sas_target_priv_data = starget->hostdata;
6483                         sas_target_priv_data->deleted = 1;
6484                 }
6485                 pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
6486                         ioc->name,  raid_device->handle,
6487                     (unsigned long long) raid_device->wwid);
6488                 list_del(&raid_device->list);
6489                 kfree(raid_device);
6490         }
6491         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6492         if (starget)
6493                 scsi_remove_target(&starget->dev);
6494 }
6495
6496 /**
6497  * _scsih_sas_pd_expose - expose pd component to /dev/sdX
6498  * @ioc: per adapter object
6499  * @element: IR config element data
6500  * Context: user.
6501  *
6502  * Return nothing.
6503  */
6504 static void
6505 _scsih_sas_pd_expose(struct MPT3SAS_ADAPTER *ioc,
6506         Mpi2EventIrConfigElement_t *element)
6507 {
6508         struct _sas_device *sas_device;
6509         struct scsi_target *starget = NULL;
6510         struct MPT3SAS_TARGET *sas_target_priv_data;
6511         unsigned long flags;
6512         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6513
6514         spin_lock_irqsave(&ioc->sas_device_lock, flags);
6515         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6516         if (sas_device) {
6517                 sas_device->volume_handle = 0;
6518                 sas_device->volume_wwid = 0;
6519                 clear_bit(handle, ioc->pd_handles);
6520                 if (sas_device->starget && sas_device->starget->hostdata) {
6521                         starget = sas_device->starget;
6522                         sas_target_priv_data = starget->hostdata;
6523                         sas_target_priv_data->flags &=
6524                             ~MPT_TARGET_FLAGS_RAID_COMPONENT;
6525                 }
6526         }
6527         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6528         if (!sas_device)
6529                 return;
6530
6531         /* exposing raid component */
6532         if (starget)
6533                 starget_for_each_device(starget, NULL, _scsih_reprobe_lun);
6534
6535         sas_device_put(sas_device);
6536 }
6537
6538 /**
6539  * _scsih_sas_pd_hide - hide pd component from /dev/sdX
6540  * @ioc: per adapter object
6541  * @element: IR config element data
6542  * Context: user.
6543  *
6544  * Return nothing.
6545  */
6546 static void
6547 _scsih_sas_pd_hide(struct MPT3SAS_ADAPTER *ioc,
6548         Mpi2EventIrConfigElement_t *element)
6549 {
6550         struct _sas_device *sas_device;
6551         struct scsi_target *starget = NULL;
6552         struct MPT3SAS_TARGET *sas_target_priv_data;
6553         unsigned long flags;
6554         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6555         u16 volume_handle = 0;
6556         u64 volume_wwid = 0;
6557
6558         mpt3sas_config_get_volume_handle(ioc, handle, &volume_handle);
6559         if (volume_handle)
6560                 mpt3sas_config_get_volume_wwid(ioc, volume_handle,
6561                     &volume_wwid);
6562
6563         spin_lock_irqsave(&ioc->sas_device_lock, flags);
6564         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6565         if (sas_device) {
6566                 set_bit(handle, ioc->pd_handles);
6567                 if (sas_device->starget && sas_device->starget->hostdata) {
6568                         starget = sas_device->starget;
6569                         sas_target_priv_data = starget->hostdata;
6570                         sas_target_priv_data->flags |=
6571                             MPT_TARGET_FLAGS_RAID_COMPONENT;
6572                         sas_device->volume_handle = volume_handle;
6573                         sas_device->volume_wwid = volume_wwid;
6574                 }
6575         }
6576         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6577         if (!sas_device)
6578                 return;
6579
6580         /* hiding raid component */
6581         _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6582
6583         if (starget)
6584                 starget_for_each_device(starget, (void *)1, _scsih_reprobe_lun);
6585
6586         sas_device_put(sas_device);
6587 }
6588
6589 /**
6590  * _scsih_sas_pd_delete - delete pd component
6591  * @ioc: per adapter object
6592  * @element: IR config element data
6593  * Context: user.
6594  *
6595  * Return nothing.
6596  */
6597 static void
6598 _scsih_sas_pd_delete(struct MPT3SAS_ADAPTER *ioc,
6599         Mpi2EventIrConfigElement_t *element)
6600 {
6601         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6602
6603         _scsih_device_remove_by_handle(ioc, handle);
6604 }
6605
6606 /**
6607  * _scsih_sas_pd_add - remove pd component
6608  * @ioc: per adapter object
6609  * @element: IR config element data
6610  * Context: user.
6611  *
6612  * Return nothing.
6613  */
6614 static void
6615 _scsih_sas_pd_add(struct MPT3SAS_ADAPTER *ioc,
6616         Mpi2EventIrConfigElement_t *element)
6617 {
6618         struct _sas_device *sas_device;
6619         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6620         Mpi2ConfigReply_t mpi_reply;
6621         Mpi2SasDevicePage0_t sas_device_pg0;
6622         u32 ioc_status;
6623         u64 sas_address;
6624         u16 parent_handle;
6625
6626         set_bit(handle, ioc->pd_handles);
6627
6628         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6629         if (sas_device) {
6630                 _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6631                 sas_device_put(sas_device);
6632                 return;
6633         }
6634
6635         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
6636             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
6637                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6638                     ioc->name, __FILE__, __LINE__, __func__);
6639                 return;
6640         }
6641
6642         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6643             MPI2_IOCSTATUS_MASK;
6644         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6645                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6646                     ioc->name, __FILE__, __LINE__, __func__);
6647                 return;
6648         }
6649
6650         parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6651         if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6652                 mpt3sas_transport_update_links(ioc, sas_address, handle,
6653                     sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6654
6655         _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6656         _scsih_add_device(ioc, handle, 0, 1);
6657 }
6658
6659 /**
6660  * _scsih_sas_ir_config_change_event_debug - debug for IR Config Change events
6661  * @ioc: per adapter object
6662  * @event_data: event data payload
6663  * Context: user.
6664  *
6665  * Return nothing.
6666  */
6667 static void
6668 _scsih_sas_ir_config_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
6669         Mpi2EventDataIrConfigChangeList_t *event_data)
6670 {
6671         Mpi2EventIrConfigElement_t *element;
6672         u8 element_type;
6673         int i;
6674         char *reason_str = NULL, *element_str = NULL;
6675
6676         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6677
6678         pr_info(MPT3SAS_FMT "raid config change: (%s), elements(%d)\n",
6679             ioc->name, (le32_to_cpu(event_data->Flags) &
6680             MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ?
6681             "foreign" : "native", event_data->NumElements);
6682         for (i = 0; i < event_data->NumElements; i++, element++) {
6683                 switch (element->ReasonCode) {
6684                 case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6685                         reason_str = "add";
6686                         break;
6687                 case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6688                         reason_str = "remove";
6689                         break;
6690                 case MPI2_EVENT_IR_CHANGE_RC_NO_CHANGE:
6691                         reason_str = "no change";
6692                         break;
6693                 case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6694                         reason_str = "hide";
6695                         break;
6696                 case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6697                         reason_str = "unhide";
6698                         break;
6699                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6700                         reason_str = "volume_created";
6701                         break;
6702                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6703                         reason_str = "volume_deleted";
6704                         break;
6705                 case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6706                         reason_str = "pd_created";
6707                         break;
6708                 case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6709                         reason_str = "pd_deleted";
6710                         break;
6711                 default:
6712                         reason_str = "unknown reason";
6713                         break;
6714                 }
6715                 element_type = le16_to_cpu(element->ElementFlags) &
6716                     MPI2_EVENT_IR_CHANGE_EFLAGS_ELEMENT_TYPE_MASK;
6717                 switch (element_type) {
6718                 case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLUME_ELEMENT:
6719                         element_str = "volume";
6720                         break;
6721                 case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLPHYSDISK_ELEMENT:
6722                         element_str = "phys disk";
6723                         break;
6724                 case MPI2_EVENT_IR_CHANGE_EFLAGS_HOTSPARE_ELEMENT:
6725                         element_str = "hot spare";
6726                         break;
6727                 default:
6728                         element_str = "unknown element";
6729                         break;
6730                 }
6731                 pr_info("\t(%s:%s), vol handle(0x%04x), " \
6732                     "pd handle(0x%04x), pd num(0x%02x)\n", element_str,
6733                     reason_str, le16_to_cpu(element->VolDevHandle),
6734                     le16_to_cpu(element->PhysDiskDevHandle),
6735                     element->PhysDiskNum);
6736         }
6737 }
6738
6739 /**
6740  * _scsih_sas_ir_config_change_event - handle ir configuration change events
6741  * @ioc: per adapter object
6742  * @fw_event: The fw_event_work object
6743  * Context: user.
6744  *
6745  * Return nothing.
6746  */
6747 static void
6748 _scsih_sas_ir_config_change_event(struct MPT3SAS_ADAPTER *ioc,
6749         struct fw_event_work *fw_event)
6750 {
6751         Mpi2EventIrConfigElement_t *element;
6752         int i;
6753         u8 foreign_config;
6754         Mpi2EventDataIrConfigChangeList_t *event_data =
6755                 (Mpi2EventDataIrConfigChangeList_t *)
6756                 fw_event->event_data;
6757
6758         if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
6759              (!ioc->hide_ir_msg))
6760                 _scsih_sas_ir_config_change_event_debug(ioc, event_data);
6761
6762         foreign_config = (le32_to_cpu(event_data->Flags) &
6763             MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ? 1 : 0;
6764
6765         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6766         if (ioc->shost_recovery &&
6767             ioc->hba_mpi_version_belonged != MPI2_VERSION) {
6768                 for (i = 0; i < event_data->NumElements; i++, element++) {
6769                         if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_HIDE)
6770                                 _scsih_ir_fastpath(ioc,
6771                                         le16_to_cpu(element->PhysDiskDevHandle),
6772                                         element->PhysDiskNum);
6773                 }
6774                 return;
6775         }
6776
6777         for (i = 0; i < event_data->NumElements; i++, element++) {
6778
6779                 switch (element->ReasonCode) {
6780                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6781                 case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6782                         if (!foreign_config)
6783                                 _scsih_sas_volume_add(ioc, element);
6784                         break;
6785                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6786                 case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6787                         if (!foreign_config)
6788                                 _scsih_sas_volume_delete(ioc,
6789                                     le16_to_cpu(element->VolDevHandle));
6790                         break;
6791                 case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6792                         if (!ioc->is_warpdrive)
6793                                 _scsih_sas_pd_hide(ioc, element);
6794                         break;
6795                 case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6796                         if (!ioc->is_warpdrive)
6797                                 _scsih_sas_pd_expose(ioc, element);
6798                         break;
6799                 case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6800                         if (!ioc->is_warpdrive)
6801                                 _scsih_sas_pd_add(ioc, element);
6802                         break;
6803                 case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6804                         if (!ioc->is_warpdrive)
6805                                 _scsih_sas_pd_delete(ioc, element);
6806                         break;
6807                 }
6808         }
6809 }
6810
6811 /**
6812  * _scsih_sas_ir_volume_event - IR volume event
6813  * @ioc: per adapter object
6814  * @fw_event: The fw_event_work object
6815  * Context: user.
6816  *
6817  * Return nothing.
6818  */
6819 static void
6820 _scsih_sas_ir_volume_event(struct MPT3SAS_ADAPTER *ioc,
6821         struct fw_event_work *fw_event)
6822 {
6823         u64 wwid;
6824         unsigned long flags;
6825         struct _raid_device *raid_device;
6826         u16 handle;
6827         u32 state;
6828         int rc;
6829         Mpi2EventDataIrVolume_t *event_data =
6830                 (Mpi2EventDataIrVolume_t *) fw_event->event_data;
6831
6832         if (ioc->shost_recovery)
6833                 return;
6834
6835         if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
6836                 return;
6837
6838         handle = le16_to_cpu(event_data->VolDevHandle);
6839         state = le32_to_cpu(event_data->NewValue);
6840         if (!ioc->hide_ir_msg)
6841                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6842                     "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6843                     ioc->name, __func__,  handle,
6844                     le32_to_cpu(event_data->PreviousValue), state));
6845         switch (state) {
6846         case MPI2_RAID_VOL_STATE_MISSING:
6847         case MPI2_RAID_VOL_STATE_FAILED:
6848                 _scsih_sas_volume_delete(ioc, handle);
6849                 break;
6850
6851         case MPI2_RAID_VOL_STATE_ONLINE:
6852         case MPI2_RAID_VOL_STATE_DEGRADED:
6853         case MPI2_RAID_VOL_STATE_OPTIMAL:
6854
6855                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
6856                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6857                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6858
6859                 if (raid_device)
6860                         break;
6861
6862                 mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6863                 if (!wwid) {
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 = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6871                 if (!raid_device) {
6872                         pr_err(MPT3SAS_FMT
6873                             "failure at %s:%d/%s()!\n", ioc->name,
6874                             __FILE__, __LINE__, __func__);
6875                         break;
6876                 }
6877
6878                 raid_device->id = ioc->sas_id++;
6879                 raid_device->channel = RAID_CHANNEL;
6880                 raid_device->handle = handle;
6881                 raid_device->wwid = wwid;
6882                 _scsih_raid_device_add(ioc, raid_device);
6883                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6884                     raid_device->id, 0);
6885                 if (rc)
6886                         _scsih_raid_device_remove(ioc, raid_device);
6887                 break;
6888
6889         case MPI2_RAID_VOL_STATE_INITIALIZING:
6890         default:
6891                 break;
6892         }
6893 }
6894
6895 /**
6896  * _scsih_sas_ir_physical_disk_event - PD event
6897  * @ioc: per adapter object
6898  * @fw_event: The fw_event_work object
6899  * Context: user.
6900  *
6901  * Return nothing.
6902  */
6903 static void
6904 _scsih_sas_ir_physical_disk_event(struct MPT3SAS_ADAPTER *ioc,
6905         struct fw_event_work *fw_event)
6906 {
6907         u16 handle, parent_handle;
6908         u32 state;
6909         struct _sas_device *sas_device;
6910         Mpi2ConfigReply_t mpi_reply;
6911         Mpi2SasDevicePage0_t sas_device_pg0;
6912         u32 ioc_status;
6913         Mpi2EventDataIrPhysicalDisk_t *event_data =
6914                 (Mpi2EventDataIrPhysicalDisk_t *) fw_event->event_data;
6915         u64 sas_address;
6916
6917         if (ioc->shost_recovery)
6918                 return;
6919
6920         if (event_data->ReasonCode != MPI2_EVENT_IR_PHYSDISK_RC_STATE_CHANGED)
6921                 return;
6922
6923         handle = le16_to_cpu(event_data->PhysDiskDevHandle);
6924         state = le32_to_cpu(event_data->NewValue);
6925
6926         if (!ioc->hide_ir_msg)
6927                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6928                     "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6929                     ioc->name, __func__,  handle,
6930                     le32_to_cpu(event_data->PreviousValue), state));
6931
6932         switch (state) {
6933         case MPI2_RAID_PD_STATE_ONLINE:
6934         case MPI2_RAID_PD_STATE_DEGRADED:
6935         case MPI2_RAID_PD_STATE_REBUILDING:
6936         case MPI2_RAID_PD_STATE_OPTIMAL:
6937         case MPI2_RAID_PD_STATE_HOT_SPARE:
6938
6939                 if (!ioc->is_warpdrive)
6940                         set_bit(handle, ioc->pd_handles);
6941
6942                 sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6943                 if (sas_device) {
6944                         sas_device_put(sas_device);
6945                         return;
6946                 }
6947
6948                 if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
6949                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
6950                     handle))) {
6951                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6952                             ioc->name, __FILE__, __LINE__, __func__);
6953                         return;
6954                 }
6955
6956                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6957                     MPI2_IOCSTATUS_MASK;
6958                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6959                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6960                             ioc->name, __FILE__, __LINE__, __func__);
6961                         return;
6962                 }
6963
6964                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6965                 if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6966                         mpt3sas_transport_update_links(ioc, sas_address, handle,
6967                             sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6968
6969                 _scsih_add_device(ioc, handle, 0, 1);
6970
6971                 break;
6972
6973         case MPI2_RAID_PD_STATE_OFFLINE:
6974         case MPI2_RAID_PD_STATE_NOT_CONFIGURED:
6975         case MPI2_RAID_PD_STATE_NOT_COMPATIBLE:
6976         default:
6977                 break;
6978         }
6979 }
6980
6981 /**
6982  * _scsih_sas_ir_operation_status_event_debug - debug for IR op event
6983  * @ioc: per adapter object
6984  * @event_data: event data payload
6985  * Context: user.
6986  *
6987  * Return nothing.
6988  */
6989 static void
6990 _scsih_sas_ir_operation_status_event_debug(struct MPT3SAS_ADAPTER *ioc,
6991         Mpi2EventDataIrOperationStatus_t *event_data)
6992 {
6993         char *reason_str = NULL;
6994
6995         switch (event_data->RAIDOperation) {
6996         case MPI2_EVENT_IR_RAIDOP_RESYNC:
6997                 reason_str = "resync";
6998                 break;
6999         case MPI2_EVENT_IR_RAIDOP_ONLINE_CAP_EXPANSION:
7000                 reason_str = "online capacity expansion";
7001                 break;
7002         case MPI2_EVENT_IR_RAIDOP_CONSISTENCY_CHECK:
7003                 reason_str = "consistency check";
7004                 break;
7005         case MPI2_EVENT_IR_RAIDOP_BACKGROUND_INIT:
7006                 reason_str = "background init";
7007                 break;
7008         case MPI2_EVENT_IR_RAIDOP_MAKE_DATA_CONSISTENT:
7009                 reason_str = "make data consistent";
7010                 break;
7011         }
7012
7013         if (!reason_str)
7014                 return;
7015
7016         pr_info(MPT3SAS_FMT "raid operational status: (%s)" \
7017             "\thandle(0x%04x), percent complete(%d)\n",
7018             ioc->name, reason_str,
7019             le16_to_cpu(event_data->VolDevHandle),
7020             event_data->PercentComplete);
7021 }
7022
7023 /**
7024  * _scsih_sas_ir_operation_status_event - handle RAID operation events
7025  * @ioc: per adapter object
7026  * @fw_event: The fw_event_work object
7027  * Context: user.
7028  *
7029  * Return nothing.
7030  */
7031 static void
7032 _scsih_sas_ir_operation_status_event(struct MPT3SAS_ADAPTER *ioc,
7033         struct fw_event_work *fw_event)
7034 {
7035         Mpi2EventDataIrOperationStatus_t *event_data =
7036                 (Mpi2EventDataIrOperationStatus_t *)
7037                 fw_event->event_data;
7038         static struct _raid_device *raid_device;
7039         unsigned long flags;
7040         u16 handle;
7041
7042         if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
7043             (!ioc->hide_ir_msg))
7044                 _scsih_sas_ir_operation_status_event_debug(ioc,
7045                      event_data);
7046
7047         /* code added for raid transport support */
7048         if (event_data->RAIDOperation == MPI2_EVENT_IR_RAIDOP_RESYNC) {
7049
7050                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
7051                 handle = le16_to_cpu(event_data->VolDevHandle);
7052                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
7053                 if (raid_device)
7054                         raid_device->percent_complete =
7055                             event_data->PercentComplete;
7056                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7057         }
7058 }
7059
7060 /**
7061  * _scsih_prep_device_scan - initialize parameters prior to device scan
7062  * @ioc: per adapter object
7063  *
7064  * Set the deleted flag prior to device scan.  If the device is found during
7065  * the scan, then we clear the deleted flag.
7066  */
7067 static void
7068 _scsih_prep_device_scan(struct MPT3SAS_ADAPTER *ioc)
7069 {
7070         struct MPT3SAS_DEVICE *sas_device_priv_data;
7071         struct scsi_device *sdev;
7072
7073         shost_for_each_device(sdev, ioc->shost) {
7074                 sas_device_priv_data = sdev->hostdata;
7075                 if (sas_device_priv_data && sas_device_priv_data->sas_target)
7076                         sas_device_priv_data->sas_target->deleted = 1;
7077         }
7078 }
7079
7080 /**
7081  * _scsih_mark_responding_sas_device - mark a sas_devices as responding
7082  * @ioc: per adapter object
7083  * @sas_device_pg0: SAS Device page 0
7084  *
7085  * After host reset, find out whether devices are still responding.
7086  * Used in _scsih_remove_unresponsive_sas_devices.
7087  *
7088  * Return nothing.
7089  */
7090 static void
7091 _scsih_mark_responding_sas_device(struct MPT3SAS_ADAPTER *ioc,
7092 Mpi2SasDevicePage0_t *sas_device_pg0)
7093 {
7094         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7095         struct scsi_target *starget;
7096         struct _sas_device *sas_device;
7097         unsigned long flags;
7098
7099         spin_lock_irqsave(&ioc->sas_device_lock, flags);
7100         list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
7101                 if ((sas_device->sas_address == sas_device_pg0->SASAddress) &&
7102                         (sas_device->slot == sas_device_pg0->Slot)) {
7103                         sas_device->responding = 1;
7104                         starget = sas_device->starget;
7105                         if (starget && starget->hostdata) {
7106                                 sas_target_priv_data = starget->hostdata;
7107                                 sas_target_priv_data->tm_busy = 0;
7108                                 sas_target_priv_data->deleted = 0;
7109                         } else
7110                                 sas_target_priv_data = NULL;
7111                         if (starget) {
7112                                 starget_printk(KERN_INFO, starget,
7113                                     "handle(0x%04x), sas_addr(0x%016llx)\n",
7114                                     sas_device_pg0->DevHandle,
7115                                     (unsigned long long)
7116                                     sas_device->sas_address);
7117
7118                                 if (sas_device->enclosure_handle != 0)
7119                                         starget_printk(KERN_INFO, starget,
7120                                          "enclosure logical id(0x%016llx),"
7121                                          " slot(%d)\n",
7122                                          (unsigned long long)
7123                                          sas_device->enclosure_logical_id,
7124                                          sas_device->slot);
7125                         }
7126                         if (sas_device_pg0->Flags &
7127                               MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
7128                                 sas_device->enclosure_level =
7129                                    sas_device_pg0->EnclosureLevel;
7130                                 memcpy(&sas_device->connector_name[0],
7131                                         &sas_device_pg0->ConnectorName[0], 4);
7132                         } else {
7133                                 sas_device->enclosure_level = 0;
7134                                 sas_device->connector_name[0] = '\0';
7135                         }
7136
7137                         if (sas_device->handle == sas_device_pg0->DevHandle)
7138                                 goto out;
7139                         pr_info("\thandle changed from(0x%04x)!!!\n",
7140                             sas_device->handle);
7141                         sas_device->handle = sas_device_pg0->DevHandle;
7142                         if (sas_target_priv_data)
7143                                 sas_target_priv_data->handle =
7144                                         sas_device_pg0->DevHandle;
7145                         goto out;
7146                 }
7147         }
7148  out:
7149         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7150 }
7151
7152 /**
7153  * _scsih_search_responding_sas_devices -
7154  * @ioc: per adapter object
7155  *
7156  * After host reset, find out whether devices are still responding.
7157  * If not remove.
7158  *
7159  * Return nothing.
7160  */
7161 static void
7162 _scsih_search_responding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7163 {
7164         Mpi2SasDevicePage0_t sas_device_pg0;
7165         Mpi2ConfigReply_t mpi_reply;
7166         u16 ioc_status;
7167         u16 handle;
7168         u32 device_info;
7169
7170         pr_info(MPT3SAS_FMT "search for end-devices: start\n", ioc->name);
7171
7172         if (list_empty(&ioc->sas_device_list))
7173                 goto out;
7174
7175         handle = 0xFFFF;
7176         while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7177             &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7178             handle))) {
7179                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7180                     MPI2_IOCSTATUS_MASK;
7181                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7182                         break;
7183                 handle = sas_device_pg0.DevHandle =
7184                                 le16_to_cpu(sas_device_pg0.DevHandle);
7185                 device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
7186                 if (!(_scsih_is_end_device(device_info)))
7187                         continue;
7188                 sas_device_pg0.SASAddress =
7189                                 le64_to_cpu(sas_device_pg0.SASAddress);
7190                 sas_device_pg0.Slot = le16_to_cpu(sas_device_pg0.Slot);
7191                 sas_device_pg0.Flags = le16_to_cpu(sas_device_pg0.Flags);
7192                 _scsih_mark_responding_sas_device(ioc, &sas_device_pg0);
7193         }
7194
7195  out:
7196         pr_info(MPT3SAS_FMT "search for end-devices: complete\n",
7197             ioc->name);
7198 }
7199
7200 /**
7201  * _scsih_mark_responding_raid_device - mark a raid_device as responding
7202  * @ioc: per adapter object
7203  * @wwid: world wide identifier for raid volume
7204  * @handle: device handle
7205  *
7206  * After host reset, find out whether devices are still responding.
7207  * Used in _scsih_remove_unresponsive_raid_devices.
7208  *
7209  * Return nothing.
7210  */
7211 static void
7212 _scsih_mark_responding_raid_device(struct MPT3SAS_ADAPTER *ioc, u64 wwid,
7213         u16 handle)
7214 {
7215         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7216         struct scsi_target *starget;
7217         struct _raid_device *raid_device;
7218         unsigned long flags;
7219
7220         spin_lock_irqsave(&ioc->raid_device_lock, flags);
7221         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
7222                 if (raid_device->wwid == wwid && raid_device->starget) {
7223                         starget = raid_device->starget;
7224                         if (starget && starget->hostdata) {
7225                                 sas_target_priv_data = starget->hostdata;
7226                                 sas_target_priv_data->deleted = 0;
7227                         } else
7228                                 sas_target_priv_data = NULL;
7229                         raid_device->responding = 1;
7230                         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7231                         starget_printk(KERN_INFO, raid_device->starget,
7232                             "handle(0x%04x), wwid(0x%016llx)\n", handle,
7233                             (unsigned long long)raid_device->wwid);
7234
7235                         /*
7236                          * WARPDRIVE: The handles of the PDs might have changed
7237                          * across the host reset so re-initialize the
7238                          * required data for Direct IO
7239                          */
7240                         mpt3sas_init_warpdrive_properties(ioc, raid_device);
7241                         spin_lock_irqsave(&ioc->raid_device_lock, flags);
7242                         if (raid_device->handle == handle) {
7243                                 spin_unlock_irqrestore(&ioc->raid_device_lock,
7244                                     flags);
7245                                 return;
7246                         }
7247                         pr_info("\thandle changed from(0x%04x)!!!\n",
7248                             raid_device->handle);
7249                         raid_device->handle = handle;
7250                         if (sas_target_priv_data)
7251                                 sas_target_priv_data->handle = handle;
7252                         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7253                         return;
7254                 }
7255         }
7256         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7257 }
7258
7259 /**
7260  * _scsih_search_responding_raid_devices -
7261  * @ioc: per adapter object
7262  *
7263  * After host reset, find out whether devices are still responding.
7264  * If not remove.
7265  *
7266  * Return nothing.
7267  */
7268 static void
7269 _scsih_search_responding_raid_devices(struct MPT3SAS_ADAPTER *ioc)
7270 {
7271         Mpi2RaidVolPage1_t volume_pg1;
7272         Mpi2RaidVolPage0_t volume_pg0;
7273         Mpi2RaidPhysDiskPage0_t pd_pg0;
7274         Mpi2ConfigReply_t mpi_reply;
7275         u16 ioc_status;
7276         u16 handle;
7277         u8 phys_disk_num;
7278
7279         if (!ioc->ir_firmware)
7280                 return;
7281
7282         pr_info(MPT3SAS_FMT "search for raid volumes: start\n",
7283             ioc->name);
7284
7285         if (list_empty(&ioc->raid_device_list))
7286                 goto out;
7287
7288         handle = 0xFFFF;
7289         while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7290             &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7291                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7292                     MPI2_IOCSTATUS_MASK;
7293                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7294                         break;
7295                 handle = le16_to_cpu(volume_pg1.DevHandle);
7296
7297                 if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7298                     &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7299                      sizeof(Mpi2RaidVolPage0_t)))
7300                         continue;
7301
7302                 if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7303                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7304                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED)
7305                         _scsih_mark_responding_raid_device(ioc,
7306                             le64_to_cpu(volume_pg1.WWID), handle);
7307         }
7308
7309         /* refresh the pd_handles */
7310         if (!ioc->is_warpdrive) {
7311                 phys_disk_num = 0xFF;
7312                 memset(ioc->pd_handles, 0, ioc->pd_handles_sz);
7313                 while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7314                     &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7315                     phys_disk_num))) {
7316                         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7317                             MPI2_IOCSTATUS_MASK;
7318                         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7319                                 break;
7320                         phys_disk_num = pd_pg0.PhysDiskNum;
7321                         handle = le16_to_cpu(pd_pg0.DevHandle);
7322                         set_bit(handle, ioc->pd_handles);
7323                 }
7324         }
7325  out:
7326         pr_info(MPT3SAS_FMT "search for responding raid volumes: complete\n",
7327                 ioc->name);
7328 }
7329
7330 /**
7331  * _scsih_mark_responding_expander - mark a expander as responding
7332  * @ioc: per adapter object
7333  * @sas_address: sas address
7334  * @handle:
7335  *
7336  * After host reset, find out whether devices are still responding.
7337  * Used in _scsih_remove_unresponsive_expanders.
7338  *
7339  * Return nothing.
7340  */
7341 static void
7342 _scsih_mark_responding_expander(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
7343         u16 handle)
7344 {
7345         struct _sas_node *sas_expander;
7346         unsigned long flags;
7347         int i;
7348
7349         spin_lock_irqsave(&ioc->sas_node_lock, flags);
7350         list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
7351                 if (sas_expander->sas_address != sas_address)
7352                         continue;
7353                 sas_expander->responding = 1;
7354                 if (sas_expander->handle == handle)
7355                         goto out;
7356                 pr_info("\texpander(0x%016llx): handle changed" \
7357                     " from(0x%04x) to (0x%04x)!!!\n",
7358                     (unsigned long long)sas_expander->sas_address,
7359                     sas_expander->handle, handle);
7360                 sas_expander->handle = handle;
7361                 for (i = 0 ; i < sas_expander->num_phys ; i++)
7362                         sas_expander->phy[i].handle = handle;
7363                 goto out;
7364         }
7365  out:
7366         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7367 }
7368
7369 /**
7370  * _scsih_search_responding_expanders -
7371  * @ioc: per adapter object
7372  *
7373  * After host reset, find out whether devices are still responding.
7374  * If not remove.
7375  *
7376  * Return nothing.
7377  */
7378 static void
7379 _scsih_search_responding_expanders(struct MPT3SAS_ADAPTER *ioc)
7380 {
7381         Mpi2ExpanderPage0_t expander_pg0;
7382         Mpi2ConfigReply_t mpi_reply;
7383         u16 ioc_status;
7384         u64 sas_address;
7385         u16 handle;
7386
7387         pr_info(MPT3SAS_FMT "search for expanders: start\n", ioc->name);
7388
7389         if (list_empty(&ioc->sas_expander_list))
7390                 goto out;
7391
7392         handle = 0xFFFF;
7393         while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7394             MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7395
7396                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7397                     MPI2_IOCSTATUS_MASK;
7398                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7399                         break;
7400
7401                 handle = le16_to_cpu(expander_pg0.DevHandle);
7402                 sas_address = le64_to_cpu(expander_pg0.SASAddress);
7403                 pr_info("\texpander present: handle(0x%04x), sas_addr(0x%016llx)\n",
7404                         handle,
7405                     (unsigned long long)sas_address);
7406                 _scsih_mark_responding_expander(ioc, sas_address, handle);
7407         }
7408
7409  out:
7410         pr_info(MPT3SAS_FMT "search for expanders: complete\n", ioc->name);
7411 }
7412
7413 /**
7414  * _scsih_remove_unresponding_sas_devices - removing unresponding devices
7415  * @ioc: per adapter object
7416  *
7417  * Return nothing.
7418  */
7419 static void
7420 _scsih_remove_unresponding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7421 {
7422         struct _sas_device *sas_device, *sas_device_next;
7423         struct _sas_node *sas_expander, *sas_expander_next;
7424         struct _raid_device *raid_device, *raid_device_next;
7425         struct list_head tmp_list;
7426         unsigned long flags;
7427         LIST_HEAD(head);
7428
7429         pr_info(MPT3SAS_FMT "removing unresponding devices: start\n",
7430             ioc->name);
7431
7432         /* removing unresponding end devices */
7433         pr_info(MPT3SAS_FMT "removing unresponding devices: end-devices\n",
7434             ioc->name);
7435         /*
7436          * Iterate, pulling off devices marked as non-responding. We become the
7437          * owner for the reference the list had on any object we prune.
7438          */
7439         spin_lock_irqsave(&ioc->sas_device_lock, flags);
7440         list_for_each_entry_safe(sas_device, sas_device_next,
7441             &ioc->sas_device_list, list) {
7442                 if (!sas_device->responding)
7443                         list_move_tail(&sas_device->list, &head);
7444                 else
7445                         sas_device->responding = 0;
7446         }
7447         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7448
7449         /*
7450          * Now, uninitialize and remove the unresponding devices we pruned.
7451          */
7452         list_for_each_entry_safe(sas_device, sas_device_next, &head, list) {
7453                 _scsih_remove_device(ioc, sas_device);
7454                 list_del_init(&sas_device->list);
7455                 sas_device_put(sas_device);
7456         }
7457
7458         /* removing unresponding volumes */
7459         if (ioc->ir_firmware) {
7460                 pr_info(MPT3SAS_FMT "removing unresponding devices: volumes\n",
7461                         ioc->name);
7462                 list_for_each_entry_safe(raid_device, raid_device_next,
7463                     &ioc->raid_device_list, list) {
7464                         if (!raid_device->responding)
7465                                 _scsih_sas_volume_delete(ioc,
7466                                     raid_device->handle);
7467                         else
7468                                 raid_device->responding = 0;
7469                 }
7470         }
7471
7472         /* removing unresponding expanders */
7473         pr_info(MPT3SAS_FMT "removing unresponding devices: expanders\n",
7474             ioc->name);
7475         spin_lock_irqsave(&ioc->sas_node_lock, flags);
7476         INIT_LIST_HEAD(&tmp_list);
7477         list_for_each_entry_safe(sas_expander, sas_expander_next,
7478             &ioc->sas_expander_list, list) {
7479                 if (!sas_expander->responding)
7480                         list_move_tail(&sas_expander->list, &tmp_list);
7481                 else
7482                         sas_expander->responding = 0;
7483         }
7484         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7485         list_for_each_entry_safe(sas_expander, sas_expander_next, &tmp_list,
7486             list) {
7487                 list_del(&sas_expander->list);
7488                 _scsih_expander_node_remove(ioc, sas_expander);
7489         }
7490
7491         pr_info(MPT3SAS_FMT "removing unresponding devices: complete\n",
7492             ioc->name);
7493
7494         /* unblock devices */
7495         _scsih_ublock_io_all_device(ioc);
7496 }
7497
7498 static void
7499 _scsih_refresh_expander_links(struct MPT3SAS_ADAPTER *ioc,
7500         struct _sas_node *sas_expander, u16 handle)
7501 {
7502         Mpi2ExpanderPage1_t expander_pg1;
7503         Mpi2ConfigReply_t mpi_reply;
7504         int i;
7505
7506         for (i = 0 ; i < sas_expander->num_phys ; i++) {
7507                 if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
7508                     &expander_pg1, i, handle))) {
7509                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
7510                             ioc->name, __FILE__, __LINE__, __func__);
7511                         return;
7512                 }
7513
7514                 mpt3sas_transport_update_links(ioc, sas_expander->sas_address,
7515                     le16_to_cpu(expander_pg1.AttachedDevHandle), i,
7516                     expander_pg1.NegotiatedLinkRate >> 4);
7517         }
7518 }
7519
7520 /**
7521  * _scsih_scan_for_devices_after_reset - scan for devices after host reset
7522  * @ioc: per adapter object
7523  *
7524  * Return nothing.
7525  */
7526 static void
7527 _scsih_scan_for_devices_after_reset(struct MPT3SAS_ADAPTER *ioc)
7528 {
7529         Mpi2ExpanderPage0_t expander_pg0;
7530         Mpi2SasDevicePage0_t sas_device_pg0;
7531         Mpi2RaidVolPage1_t volume_pg1;
7532         Mpi2RaidVolPage0_t volume_pg0;
7533         Mpi2RaidPhysDiskPage0_t pd_pg0;
7534         Mpi2EventIrConfigElement_t element;
7535         Mpi2ConfigReply_t mpi_reply;
7536         u8 phys_disk_num;
7537         u16 ioc_status;
7538         u16 handle, parent_handle;
7539         u64 sas_address;
7540         struct _sas_device *sas_device;
7541         struct _sas_node *expander_device;
7542         static struct _raid_device *raid_device;
7543         u8 retry_count;
7544         unsigned long flags;
7545
7546         pr_info(MPT3SAS_FMT "scan devices: start\n", ioc->name);
7547
7548         _scsih_sas_host_refresh(ioc);
7549
7550         pr_info(MPT3SAS_FMT "\tscan devices: expanders start\n", ioc->name);
7551
7552         /* expanders */
7553         handle = 0xFFFF;
7554         while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7555             MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7556                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7557                     MPI2_IOCSTATUS_MASK;
7558                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7559                         pr_info(MPT3SAS_FMT "\tbreak from expander scan: " \
7560                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7561                             ioc->name, ioc_status,
7562                             le32_to_cpu(mpi_reply.IOCLogInfo));
7563                         break;
7564                 }
7565                 handle = le16_to_cpu(expander_pg0.DevHandle);
7566                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
7567                 expander_device = mpt3sas_scsih_expander_find_by_sas_address(
7568                     ioc, le64_to_cpu(expander_pg0.SASAddress));
7569                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7570                 if (expander_device)
7571                         _scsih_refresh_expander_links(ioc, expander_device,
7572                             handle);
7573                 else {
7574                         pr_info(MPT3SAS_FMT "\tBEFORE adding expander: " \
7575                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7576                             handle, (unsigned long long)
7577                             le64_to_cpu(expander_pg0.SASAddress));
7578                         _scsih_expander_add(ioc, handle);
7579                         pr_info(MPT3SAS_FMT "\tAFTER adding expander: " \
7580                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7581                             handle, (unsigned long long)
7582                             le64_to_cpu(expander_pg0.SASAddress));
7583                 }
7584         }
7585
7586         pr_info(MPT3SAS_FMT "\tscan devices: expanders complete\n",
7587             ioc->name);
7588
7589         if (!ioc->ir_firmware)
7590                 goto skip_to_sas;
7591
7592         pr_info(MPT3SAS_FMT "\tscan devices: phys disk start\n", ioc->name);
7593
7594         /* phys disk */
7595         phys_disk_num = 0xFF;
7596         while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7597             &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7598             phys_disk_num))) {
7599                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7600                     MPI2_IOCSTATUS_MASK;
7601                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7602                         pr_info(MPT3SAS_FMT "\tbreak from phys disk scan: "\
7603                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7604                             ioc->name, ioc_status,
7605                             le32_to_cpu(mpi_reply.IOCLogInfo));
7606                         break;
7607                 }
7608                 phys_disk_num = pd_pg0.PhysDiskNum;
7609                 handle = le16_to_cpu(pd_pg0.DevHandle);
7610                 sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
7611                 if (sas_device) {
7612                         sas_device_put(sas_device);
7613                         continue;
7614                 }
7615                 if (mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7616                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
7617                     handle) != 0)
7618                         continue;
7619                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7620                     MPI2_IOCSTATUS_MASK;
7621                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7622                         pr_info(MPT3SAS_FMT "\tbreak from phys disk scan " \
7623                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7624                             ioc->name, ioc_status,
7625                             le32_to_cpu(mpi_reply.IOCLogInfo));
7626                         break;
7627                 }
7628                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7629                 if (!_scsih_get_sas_address(ioc, parent_handle,
7630                     &sas_address)) {
7631                         pr_info(MPT3SAS_FMT "\tBEFORE adding phys disk: " \
7632                             " handle (0x%04x), sas_addr(0x%016llx)\n",
7633                             ioc->name, handle, (unsigned long long)
7634                             le64_to_cpu(sas_device_pg0.SASAddress));
7635                         mpt3sas_transport_update_links(ioc, sas_address,
7636                             handle, sas_device_pg0.PhyNum,
7637                             MPI2_SAS_NEG_LINK_RATE_1_5);
7638                         set_bit(handle, ioc->pd_handles);
7639                         retry_count = 0;
7640                         /* This will retry adding the end device.
7641                          * _scsih_add_device() will decide on retries and
7642                          * return "1" when it should be retried
7643                          */
7644                         while (_scsih_add_device(ioc, handle, retry_count++,
7645                             1)) {
7646                                 ssleep(1);
7647                         }
7648                         pr_info(MPT3SAS_FMT "\tAFTER adding phys disk: " \
7649                             " handle (0x%04x), sas_addr(0x%016llx)\n",
7650                             ioc->name, handle, (unsigned long long)
7651                             le64_to_cpu(sas_device_pg0.SASAddress));
7652                 }
7653         }
7654
7655         pr_info(MPT3SAS_FMT "\tscan devices: phys disk complete\n",
7656             ioc->name);
7657
7658         pr_info(MPT3SAS_FMT "\tscan devices: volumes start\n", ioc->name);
7659
7660         /* volumes */
7661         handle = 0xFFFF;
7662         while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7663             &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7664                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7665                     MPI2_IOCSTATUS_MASK;
7666                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7667                         pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7668                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7669                             ioc->name, ioc_status,
7670                             le32_to_cpu(mpi_reply.IOCLogInfo));
7671                         break;
7672                 }
7673                 handle = le16_to_cpu(volume_pg1.DevHandle);
7674                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
7675                 raid_device = _scsih_raid_device_find_by_wwid(ioc,
7676                     le64_to_cpu(volume_pg1.WWID));
7677                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7678                 if (raid_device)
7679                         continue;
7680                 if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7681                     &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7682                      sizeof(Mpi2RaidVolPage0_t)))
7683                         continue;
7684                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7685                     MPI2_IOCSTATUS_MASK;
7686                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7687                         pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7688                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7689                             ioc->name, ioc_status,
7690                             le32_to_cpu(mpi_reply.IOCLogInfo));
7691                         break;
7692                 }
7693                 if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7694                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7695                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED) {
7696                         memset(&element, 0, sizeof(Mpi2EventIrConfigElement_t));
7697                         element.ReasonCode = MPI2_EVENT_IR_CHANGE_RC_ADDED;
7698                         element.VolDevHandle = volume_pg1.DevHandle;
7699                         pr_info(MPT3SAS_FMT
7700                                 "\tBEFORE adding volume: handle (0x%04x)\n",
7701                                 ioc->name, volume_pg1.DevHandle);
7702                         _scsih_sas_volume_add(ioc, &element);
7703                         pr_info(MPT3SAS_FMT
7704                                 "\tAFTER adding volume: handle (0x%04x)\n",
7705                                 ioc->name, volume_pg1.DevHandle);
7706                 }
7707         }
7708
7709         pr_info(MPT3SAS_FMT "\tscan devices: volumes complete\n",
7710             ioc->name);
7711
7712  skip_to_sas:
7713
7714         pr_info(MPT3SAS_FMT "\tscan devices: end devices start\n",
7715             ioc->name);
7716
7717         /* sas devices */
7718         handle = 0xFFFF;
7719         while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7720             &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7721             handle))) {
7722                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7723                     MPI2_IOCSTATUS_MASK;
7724                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7725                         pr_info(MPT3SAS_FMT "\tbreak from end device scan:"\
7726                             " ioc_status(0x%04x), loginfo(0x%08x)\n",
7727                             ioc->name, ioc_status,
7728                             le32_to_cpu(mpi_reply.IOCLogInfo));
7729                         break;
7730                 }
7731                 handle = le16_to_cpu(sas_device_pg0.DevHandle);
7732                 if (!(_scsih_is_end_device(
7733                     le32_to_cpu(sas_device_pg0.DeviceInfo))))
7734                         continue;
7735                 sas_device = mpt3sas_get_sdev_by_addr(ioc,
7736                     le64_to_cpu(sas_device_pg0.SASAddress));
7737                 if (sas_device) {
7738                         sas_device_put(sas_device);
7739                         continue;
7740                 }
7741                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7742                 if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address)) {
7743                         pr_info(MPT3SAS_FMT "\tBEFORE adding end device: " \
7744                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7745                             handle, (unsigned long long)
7746                             le64_to_cpu(sas_device_pg0.SASAddress));
7747                         mpt3sas_transport_update_links(ioc, sas_address, handle,
7748                             sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
7749                         retry_count = 0;
7750                         /* This will retry adding the end device.
7751                          * _scsih_add_device() will decide on retries and
7752                          * return "1" when it should be retried
7753                          */
7754                         while (_scsih_add_device(ioc, handle, retry_count++,
7755                             0)) {
7756                                 ssleep(1);
7757                         }
7758                         pr_info(MPT3SAS_FMT "\tAFTER adding end device: " \
7759                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7760                             handle, (unsigned long long)
7761                             le64_to_cpu(sas_device_pg0.SASAddress));
7762                 }
7763         }
7764         pr_info(MPT3SAS_FMT "\tscan devices: end devices complete\n",
7765             ioc->name);
7766
7767         pr_info(MPT3SAS_FMT "scan devices: complete\n", ioc->name);
7768 }
7769 /**
7770  * mpt3sas_scsih_reset_handler - reset callback handler (for scsih)
7771  * @ioc: per adapter object
7772  * @reset_phase: phase
7773  *
7774  * The handler for doing any required cleanup or initialization.
7775  *
7776  * The reset phase can be MPT3_IOC_PRE_RESET, MPT3_IOC_AFTER_RESET,
7777  * MPT3_IOC_DONE_RESET
7778  *
7779  * Return nothing.
7780  */
7781 void
7782 mpt3sas_scsih_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
7783 {
7784         switch (reset_phase) {
7785         case MPT3_IOC_PRE_RESET:
7786                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7787                         "%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
7788                 break;
7789         case MPT3_IOC_AFTER_RESET:
7790                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7791                         "%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
7792                 if (ioc->scsih_cmds.status & MPT3_CMD_PENDING) {
7793                         ioc->scsih_cmds.status |= MPT3_CMD_RESET;
7794                         mpt3sas_base_free_smid(ioc, ioc->scsih_cmds.smid);
7795                         complete(&ioc->scsih_cmds.done);
7796                 }
7797                 if (ioc->tm_cmds.status & MPT3_CMD_PENDING) {
7798                         ioc->tm_cmds.status |= MPT3_CMD_RESET;
7799                         mpt3sas_base_free_smid(ioc, ioc->tm_cmds.smid);
7800                         complete(&ioc->tm_cmds.done);
7801                 }
7802
7803                 memset(ioc->pend_os_device_add, 0, ioc->pend_os_device_add_sz);
7804                 memset(ioc->device_remove_in_progress, 0,
7805                        ioc->device_remove_in_progress_sz);
7806                 _scsih_fw_event_cleanup_queue(ioc);
7807                 _scsih_flush_running_cmds(ioc);
7808                 break;
7809         case MPT3_IOC_DONE_RESET:
7810                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7811                         "%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));
7812                 if ((!ioc->is_driver_loading) && !(disable_discovery > 0 &&
7813                     !ioc->sas_hba.num_phys)) {
7814                         _scsih_prep_device_scan(ioc);
7815                         _scsih_search_responding_sas_devices(ioc);
7816                         _scsih_search_responding_raid_devices(ioc);
7817                         _scsih_search_responding_expanders(ioc);
7818                         _scsih_error_recovery_delete_devices(ioc);
7819                 }
7820                 break;
7821         }
7822 }
7823
7824 /**
7825  * _mpt3sas_fw_work - delayed task for processing firmware events
7826  * @ioc: per adapter object
7827  * @fw_event: The fw_event_work object
7828  * Context: user.
7829  *
7830  * Return nothing.
7831  */
7832 static void
7833 _mpt3sas_fw_work(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
7834 {
7835         _scsih_fw_event_del_from_list(ioc, fw_event);
7836
7837         /* the queue is being flushed so ignore this event */
7838         if (ioc->remove_host || ioc->pci_error_recovery) {
7839                 fw_event_work_put(fw_event);
7840                 return;
7841         }
7842
7843         switch (fw_event->event) {
7844         case MPT3SAS_PROCESS_TRIGGER_DIAG:
7845                 mpt3sas_process_trigger_data(ioc,
7846                         (struct SL_WH_TRIGGERS_EVENT_DATA_T *)
7847                         fw_event->event_data);
7848                 break;
7849         case MPT3SAS_REMOVE_UNRESPONDING_DEVICES:
7850                 while (scsi_host_in_recovery(ioc->shost) ||
7851                                          ioc->shost_recovery) {
7852                         /*
7853                          * If we're unloading, bail. Otherwise, this can become
7854                          * an infinite loop.
7855                          */
7856                         if (ioc->remove_host)
7857                                 goto out;
7858                         ssleep(1);
7859                 }
7860                 _scsih_remove_unresponding_sas_devices(ioc);
7861                 _scsih_scan_for_devices_after_reset(ioc);
7862                 break;
7863         case MPT3SAS_PORT_ENABLE_COMPLETE:
7864                 ioc->start_scan = 0;
7865         if (missing_delay[0] != -1 && missing_delay[1] != -1)
7866                         mpt3sas_base_update_missing_delay(ioc, missing_delay[0],
7867                             missing_delay[1]);
7868                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
7869                         "port enable: complete from worker thread\n",
7870                         ioc->name));
7871                 break;
7872         case MPT3SAS_TURN_ON_PFA_LED:
7873                 _scsih_turn_on_pfa_led(ioc, fw_event->device_handle);
7874                 break;
7875         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7876                 _scsih_sas_topology_change_event(ioc, fw_event);
7877                 break;
7878         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
7879                 _scsih_sas_device_status_change_event(ioc, fw_event);
7880                 break;
7881         case MPI2_EVENT_SAS_DISCOVERY:
7882                 _scsih_sas_discovery_event(ioc, fw_event);
7883                 break;
7884         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7885                 _scsih_sas_broadcast_primitive_event(ioc, fw_event);
7886                 break;
7887         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
7888                 _scsih_sas_enclosure_dev_status_change_event(ioc,
7889                     fw_event);
7890                 break;
7891         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7892                 _scsih_sas_ir_config_change_event(ioc, fw_event);
7893                 break;
7894         case MPI2_EVENT_IR_VOLUME:
7895                 _scsih_sas_ir_volume_event(ioc, fw_event);
7896                 break;
7897         case MPI2_EVENT_IR_PHYSICAL_DISK:
7898                 _scsih_sas_ir_physical_disk_event(ioc, fw_event);
7899                 break;
7900         case MPI2_EVENT_IR_OPERATION_STATUS:
7901                 _scsih_sas_ir_operation_status_event(ioc, fw_event);
7902                 break;
7903         }
7904 out:
7905         fw_event_work_put(fw_event);
7906 }
7907
7908 /**
7909  * _firmware_event_work
7910  * @ioc: per adapter object
7911  * @work: The fw_event_work object
7912  * Context: user.
7913  *
7914  * wrappers for the work thread handling firmware events
7915  *
7916  * Return nothing.
7917  */
7918
7919 static void
7920 _firmware_event_work(struct work_struct *work)
7921 {
7922         struct fw_event_work *fw_event = container_of(work,
7923             struct fw_event_work, work);
7924
7925         _mpt3sas_fw_work(fw_event->ioc, fw_event);
7926 }
7927
7928 /**
7929  * mpt3sas_scsih_event_callback - firmware event handler (called at ISR time)
7930  * @ioc: per adapter object
7931  * @msix_index: MSIX table index supplied by the OS
7932  * @reply: reply message frame(lower 32bit addr)
7933  * Context: interrupt.
7934  *
7935  * This function merely adds a new work task into ioc->firmware_event_thread.
7936  * The tasks are worked from _firmware_event_work in user context.
7937  *
7938  * Return 1 meaning mf should be freed from _base_interrupt
7939  *        0 means the mf is freed from this function.
7940  */
7941 u8
7942 mpt3sas_scsih_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
7943         u32 reply)
7944 {
7945         struct fw_event_work *fw_event;
7946         Mpi2EventNotificationReply_t *mpi_reply;
7947         u16 event;
7948         u16 sz;
7949         Mpi26EventDataActiveCableExcept_t *ActiveCableEventData;
7950
7951         /* events turned off due to host reset or driver unloading */
7952         if (ioc->remove_host || ioc->pci_error_recovery)
7953                 return 1;
7954
7955         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
7956
7957         if (unlikely(!mpi_reply)) {
7958                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
7959                     ioc->name, __FILE__, __LINE__, __func__);
7960                 return 1;
7961         }
7962
7963         event = le16_to_cpu(mpi_reply->Event);
7964
7965         if (event != MPI2_EVENT_LOG_ENTRY_ADDED)
7966                 mpt3sas_trigger_event(ioc, event, 0);
7967
7968         switch (event) {
7969         /* handle these */
7970         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7971         {
7972                 Mpi2EventDataSasBroadcastPrimitive_t *baen_data =
7973                     (Mpi2EventDataSasBroadcastPrimitive_t *)
7974                     mpi_reply->EventData;
7975
7976                 if (baen_data->Primitive !=
7977                     MPI2_EVENT_PRIMITIVE_ASYNCHRONOUS_EVENT)
7978                         return 1;
7979
7980                 if (ioc->broadcast_aen_busy) {
7981                         ioc->broadcast_aen_pending++;
7982                         return 1;
7983                 } else
7984                         ioc->broadcast_aen_busy = 1;
7985                 break;
7986         }
7987
7988         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7989                 _scsih_check_topo_delete_events(ioc,
7990                     (Mpi2EventDataSasTopologyChangeList_t *)
7991                     mpi_reply->EventData);
7992                 break;
7993         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7994                 _scsih_check_ir_config_unhide_events(ioc,
7995                     (Mpi2EventDataIrConfigChangeList_t *)
7996                     mpi_reply->EventData);
7997                 break;
7998         case MPI2_EVENT_IR_VOLUME:
7999                 _scsih_check_volume_delete_events(ioc,
8000                     (Mpi2EventDataIrVolume_t *)
8001                     mpi_reply->EventData);
8002                 break;
8003         case MPI2_EVENT_LOG_ENTRY_ADDED:
8004         {
8005                 Mpi2EventDataLogEntryAdded_t *log_entry;
8006                 u32 *log_code;
8007
8008                 if (!ioc->is_warpdrive)
8009                         break;
8010
8011                 log_entry = (Mpi2EventDataLogEntryAdded_t *)
8012                     mpi_reply->EventData;
8013                 log_code = (u32 *)log_entry->LogData;
8014
8015                 if (le16_to_cpu(log_entry->LogEntryQualifier)
8016                     != MPT2_WARPDRIVE_LOGENTRY)
8017                         break;
8018
8019                 switch (le32_to_cpu(*log_code)) {
8020                 case MPT2_WARPDRIVE_LC_SSDT:
8021                         pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
8022                             "IO Throttling has occurred in the WarpDrive "
8023                             "subsystem. Check WarpDrive documentation for "
8024                             "additional details.\n", ioc->name);
8025                         break;
8026                 case MPT2_WARPDRIVE_LC_SSDLW:
8027                         pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
8028                             "Program/Erase Cycles for the WarpDrive subsystem "
8029                             "in degraded range. Check WarpDrive documentation "
8030                             "for additional details.\n", ioc->name);
8031                         break;
8032                 case MPT2_WARPDRIVE_LC_SSDLF:
8033                         pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
8034                             "There are no Program/Erase Cycles for the "
8035                             "WarpDrive subsystem. The storage device will be "
8036                             "in read-only mode. Check WarpDrive documentation "
8037                             "for additional details.\n", ioc->name);
8038                         break;
8039                 case MPT2_WARPDRIVE_LC_BRMF:
8040                         pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
8041                             "The Backup Rail Monitor has failed on the "
8042                             "WarpDrive subsystem. Check WarpDrive "
8043                             "documentation for additional details.\n",
8044                             ioc->name);
8045                         break;
8046                 }
8047
8048                 break;
8049         }
8050         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
8051         case MPI2_EVENT_IR_OPERATION_STATUS:
8052         case MPI2_EVENT_SAS_DISCOVERY:
8053         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
8054         case MPI2_EVENT_IR_PHYSICAL_DISK:
8055                 break;
8056
8057         case MPI2_EVENT_TEMP_THRESHOLD:
8058                 _scsih_temp_threshold_events(ioc,
8059                         (Mpi2EventDataTemperature_t *)
8060                         mpi_reply->EventData);
8061                 break;
8062         case MPI2_EVENT_ACTIVE_CABLE_EXCEPTION:
8063                 ActiveCableEventData =
8064                     (Mpi26EventDataActiveCableExcept_t *) mpi_reply->EventData;
8065                 switch (ActiveCableEventData->ReasonCode) {
8066                 case MPI26_EVENT_ACTIVE_CABLE_INSUFFICIENT_POWER:
8067                         pr_notice(MPT3SAS_FMT "Receptacle ID %d: This active cable"
8068                                   " requires %d mW of power\n", ioc->name,
8069                              ActiveCableEventData->ReceptacleID,
8070                              ActiveCableEventData->ActiveCablePowerRequirement);
8071                         pr_notice(MPT3SAS_FMT "Receptacle ID %d: Devices connected"
8072                                   " to this active cable will not be seen\n",
8073                              ioc->name, ActiveCableEventData->ReceptacleID);
8074                         break;
8075
8076                 case MPI26_EVENT_ACTIVE_CABLE_DEGRADED:
8077                         pr_notice(MPT3SAS_FMT "ReceptacleID %d: This cable",
8078                                 ioc->name, ActiveCableEventData->ReceptacleID);
8079                         pr_notice(" is not running at an optimal speed(12 Gb/s)\n");
8080                         break;
8081                 }
8082
8083                 break;
8084
8085         default: /* ignore the rest */
8086                 return 1;
8087         }
8088
8089         sz = le16_to_cpu(mpi_reply->EventDataLength) * 4;
8090         fw_event = alloc_fw_event_work(sz);
8091         if (!fw_event) {
8092                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8093                     ioc->name, __FILE__, __LINE__, __func__);
8094                 return 1;
8095         }
8096
8097         memcpy(fw_event->event_data, mpi_reply->EventData, sz);
8098         fw_event->ioc = ioc;
8099         fw_event->VF_ID = mpi_reply->VF_ID;
8100         fw_event->VP_ID = mpi_reply->VP_ID;
8101         fw_event->event = event;
8102         _scsih_fw_event_add(ioc, fw_event);
8103         fw_event_work_put(fw_event);
8104         return 1;
8105 }
8106
8107 /**
8108  * _scsih_expander_node_remove - removing expander device from list.
8109  * @ioc: per adapter object
8110  * @sas_expander: the sas_device object
8111  * Context: Calling function should acquire ioc->sas_node_lock.
8112  *
8113  * Removing object and freeing associated memory from the
8114  * ioc->sas_expander_list.
8115  *
8116  * Return nothing.
8117  */
8118 static void
8119 _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
8120         struct _sas_node *sas_expander)
8121 {
8122         struct _sas_port *mpt3sas_port, *next;
8123
8124         /* remove sibling ports attached to this expander */
8125         list_for_each_entry_safe(mpt3sas_port, next,
8126            &sas_expander->sas_port_list, port_list) {
8127                 if (ioc->shost_recovery)
8128                         return;
8129                 if (mpt3sas_port->remote_identify.device_type ==
8130                     SAS_END_DEVICE)
8131                         mpt3sas_device_remove_by_sas_address(ioc,
8132                             mpt3sas_port->remote_identify.sas_address);
8133                 else if (mpt3sas_port->remote_identify.device_type ==
8134                     SAS_EDGE_EXPANDER_DEVICE ||
8135                     mpt3sas_port->remote_identify.device_type ==
8136                     SAS_FANOUT_EXPANDER_DEVICE)
8137                         mpt3sas_expander_remove(ioc,
8138                             mpt3sas_port->remote_identify.sas_address);
8139         }
8140
8141         mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
8142             sas_expander->sas_address_parent);
8143
8144         pr_info(MPT3SAS_FMT
8145                 "expander_remove: handle(0x%04x), sas_addr(0x%016llx)\n",
8146                 ioc->name,
8147             sas_expander->handle, (unsigned long long)
8148             sas_expander->sas_address);
8149
8150         kfree(sas_expander->phy);
8151         kfree(sas_expander);
8152 }
8153
8154 /**
8155  * _scsih_ir_shutdown - IR shutdown notification
8156  * @ioc: per adapter object
8157  *
8158  * Sending RAID Action to alert the Integrated RAID subsystem of the IOC that
8159  * the host system is shutting down.
8160  *
8161  * Return nothing.
8162  */
8163 static void
8164 _scsih_ir_shutdown(struct MPT3SAS_ADAPTER *ioc)
8165 {
8166         Mpi2RaidActionRequest_t *mpi_request;
8167         Mpi2RaidActionReply_t *mpi_reply;
8168         u16 smid;
8169
8170         /* is IR firmware build loaded ? */
8171         if (!ioc->ir_firmware)
8172                 return;
8173
8174         /* are there any volumes ? */
8175         if (list_empty(&ioc->raid_device_list))
8176                 return;
8177
8178         mutex_lock(&ioc->scsih_cmds.mutex);
8179
8180         if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
8181                 pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
8182                     ioc->name, __func__);
8183                 goto out;
8184         }
8185         ioc->scsih_cmds.status = MPT3_CMD_PENDING;
8186
8187         smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
8188         if (!smid) {
8189                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
8190                     ioc->name, __func__);
8191                 ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8192                 goto out;
8193         }
8194
8195         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
8196         ioc->scsih_cmds.smid = smid;
8197         memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
8198
8199         mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
8200         mpi_request->Action = MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED;
8201
8202         if (!ioc->hide_ir_msg)
8203                 pr_info(MPT3SAS_FMT "IR shutdown (sending)\n", ioc->name);
8204         init_completion(&ioc->scsih_cmds.done);
8205         ioc->put_smid_default(ioc, smid);
8206         wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
8207
8208         if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
8209                 pr_err(MPT3SAS_FMT "%s: timeout\n",
8210                     ioc->name, __func__);
8211                 goto out;
8212         }
8213
8214         if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
8215                 mpi_reply = ioc->scsih_cmds.reply;
8216                 if (!ioc->hide_ir_msg)
8217                         pr_info(MPT3SAS_FMT "IR shutdown "
8218                            "(complete): ioc_status(0x%04x), loginfo(0x%08x)\n",
8219                             ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
8220                             le32_to_cpu(mpi_reply->IOCLogInfo));
8221         }
8222
8223  out:
8224         ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8225         mutex_unlock(&ioc->scsih_cmds.mutex);
8226 }
8227
8228 /**
8229  * scsih_remove - detach and remove add host
8230  * @pdev: PCI device struct
8231  *
8232  * Routine called when unloading the driver.
8233  * Return nothing.
8234  */
8235 static void scsih_remove(struct pci_dev *pdev)
8236 {
8237         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8238         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8239         struct _sas_port *mpt3sas_port, *next_port;
8240         struct _raid_device *raid_device, *next;
8241         struct MPT3SAS_TARGET *sas_target_priv_data;
8242         struct workqueue_struct *wq;
8243         unsigned long flags;
8244
8245         ioc->remove_host = 1;
8246         _scsih_fw_event_cleanup_queue(ioc);
8247
8248         spin_lock_irqsave(&ioc->fw_event_lock, flags);
8249         wq = ioc->firmware_event_thread;
8250         ioc->firmware_event_thread = NULL;
8251         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8252         if (wq)
8253                 destroy_workqueue(wq);
8254
8255         /* release all the volumes */
8256         _scsih_ir_shutdown(ioc);
8257         list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list,
8258             list) {
8259                 if (raid_device->starget) {
8260                         sas_target_priv_data =
8261                             raid_device->starget->hostdata;
8262                         sas_target_priv_data->deleted = 1;
8263                         scsi_remove_target(&raid_device->starget->dev);
8264                 }
8265                 pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
8266                         ioc->name,  raid_device->handle,
8267                     (unsigned long long) raid_device->wwid);
8268                 _scsih_raid_device_remove(ioc, raid_device);
8269         }
8270
8271         /* free ports attached to the sas_host */
8272         list_for_each_entry_safe(mpt3sas_port, next_port,
8273            &ioc->sas_hba.sas_port_list, port_list) {
8274                 if (mpt3sas_port->remote_identify.device_type ==
8275                     SAS_END_DEVICE)
8276                         mpt3sas_device_remove_by_sas_address(ioc,
8277                             mpt3sas_port->remote_identify.sas_address);
8278                 else if (mpt3sas_port->remote_identify.device_type ==
8279                     SAS_EDGE_EXPANDER_DEVICE ||
8280                     mpt3sas_port->remote_identify.device_type ==
8281                     SAS_FANOUT_EXPANDER_DEVICE)
8282                         mpt3sas_expander_remove(ioc,
8283                             mpt3sas_port->remote_identify.sas_address);
8284         }
8285
8286         /* free phys attached to the sas_host */
8287         if (ioc->sas_hba.num_phys) {
8288                 kfree(ioc->sas_hba.phy);
8289                 ioc->sas_hba.phy = NULL;
8290                 ioc->sas_hba.num_phys = 0;
8291         }
8292
8293         sas_remove_host(shost);
8294         mpt3sas_base_detach(ioc);
8295         spin_lock(&gioc_lock);
8296         list_del(&ioc->list);
8297         spin_unlock(&gioc_lock);
8298         scsi_host_put(shost);
8299 }
8300
8301 /**
8302  * scsih_shutdown - routine call during system shutdown
8303  * @pdev: PCI device struct
8304  *
8305  * Return nothing.
8306  */
8307 static void
8308 scsih_shutdown(struct pci_dev *pdev)
8309 {
8310         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8311         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8312         struct workqueue_struct *wq;
8313         unsigned long flags;
8314
8315         ioc->remove_host = 1;
8316         _scsih_fw_event_cleanup_queue(ioc);
8317
8318         spin_lock_irqsave(&ioc->fw_event_lock, flags);
8319         wq = ioc->firmware_event_thread;
8320         ioc->firmware_event_thread = NULL;
8321         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8322         if (wq)
8323                 destroy_workqueue(wq);
8324
8325         _scsih_ir_shutdown(ioc);
8326         mpt3sas_base_detach(ioc);
8327 }
8328
8329
8330 /**
8331  * _scsih_probe_boot_devices - reports 1st device
8332  * @ioc: per adapter object
8333  *
8334  * If specified in bios page 2, this routine reports the 1st
8335  * device scsi-ml or sas transport for persistent boot device
8336  * purposes.  Please refer to function _scsih_determine_boot_device()
8337  */
8338 static void
8339 _scsih_probe_boot_devices(struct MPT3SAS_ADAPTER *ioc)
8340 {
8341         u8 is_raid;
8342         void *device;
8343         struct _sas_device *sas_device;
8344         struct _raid_device *raid_device;
8345         u16 handle;
8346         u64 sas_address_parent;
8347         u64 sas_address;
8348         unsigned long flags;
8349         int rc;
8350
8351          /* no Bios, return immediately */
8352         if (!ioc->bios_pg3.BiosVersion)
8353                 return;
8354
8355         device = NULL;
8356         is_raid = 0;
8357         if (ioc->req_boot_device.device) {
8358                 device =  ioc->req_boot_device.device;
8359                 is_raid = ioc->req_boot_device.is_raid;
8360         } else if (ioc->req_alt_boot_device.device) {
8361                 device =  ioc->req_alt_boot_device.device;
8362                 is_raid = ioc->req_alt_boot_device.is_raid;
8363         } else if (ioc->current_boot_device.device) {
8364                 device =  ioc->current_boot_device.device;
8365                 is_raid = ioc->current_boot_device.is_raid;
8366         }
8367
8368         if (!device)
8369                 return;
8370
8371         if (is_raid) {
8372                 raid_device = device;
8373                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8374                     raid_device->id, 0);
8375                 if (rc)
8376                         _scsih_raid_device_remove(ioc, raid_device);
8377         } else {
8378                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
8379                 sas_device = device;
8380                 handle = sas_device->handle;
8381                 sas_address_parent = sas_device->sas_address_parent;
8382                 sas_address = sas_device->sas_address;
8383                 list_move_tail(&sas_device->list, &ioc->sas_device_list);
8384                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8385
8386                 if (ioc->hide_drives)
8387                         return;
8388                 if (!mpt3sas_transport_port_add(ioc, handle,
8389                     sas_address_parent)) {
8390                         _scsih_sas_device_remove(ioc, sas_device);
8391                 } else if (!sas_device->starget) {
8392                         if (!ioc->is_driver_loading) {
8393                                 mpt3sas_transport_port_remove(ioc,
8394                                     sas_address,
8395                                     sas_address_parent);
8396                                 _scsih_sas_device_remove(ioc, sas_device);
8397                         }
8398                 }
8399         }
8400 }
8401
8402 /**
8403  * _scsih_probe_raid - reporting raid volumes to scsi-ml
8404  * @ioc: per adapter object
8405  *
8406  * Called during initial loading of the driver.
8407  */
8408 static void
8409 _scsih_probe_raid(struct MPT3SAS_ADAPTER *ioc)
8410 {
8411         struct _raid_device *raid_device, *raid_next;
8412         int rc;
8413
8414         list_for_each_entry_safe(raid_device, raid_next,
8415             &ioc->raid_device_list, list) {
8416                 if (raid_device->starget)
8417                         continue;
8418                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8419                     raid_device->id, 0);
8420                 if (rc)
8421                         _scsih_raid_device_remove(ioc, raid_device);
8422         }
8423 }
8424
8425 static struct _sas_device *get_next_sas_device(struct MPT3SAS_ADAPTER *ioc)
8426 {
8427         struct _sas_device *sas_device = NULL;
8428         unsigned long flags;
8429
8430         spin_lock_irqsave(&ioc->sas_device_lock, flags);
8431         if (!list_empty(&ioc->sas_device_init_list)) {
8432                 sas_device = list_first_entry(&ioc->sas_device_init_list,
8433                                 struct _sas_device, list);
8434                 sas_device_get(sas_device);
8435         }
8436         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8437
8438         return sas_device;
8439 }
8440
8441 static void sas_device_make_active(struct MPT3SAS_ADAPTER *ioc,
8442                 struct _sas_device *sas_device)
8443 {
8444         unsigned long flags;
8445
8446         spin_lock_irqsave(&ioc->sas_device_lock, flags);
8447
8448         /*
8449          * Since we dropped the lock during the call to port_add(), we need to
8450          * be careful here that somebody else didn't move or delete this item
8451          * while we were busy with other things.
8452          *
8453          * If it was on the list, we need a put() for the reference the list
8454          * had. Either way, we need a get() for the destination list.
8455          */
8456         if (!list_empty(&sas_device->list)) {
8457                 list_del_init(&sas_device->list);
8458                 sas_device_put(sas_device);
8459         }
8460
8461         sas_device_get(sas_device);
8462         list_add_tail(&sas_device->list, &ioc->sas_device_list);
8463
8464         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8465 }
8466
8467 /**
8468  * _scsih_probe_sas - reporting sas devices to sas transport
8469  * @ioc: per adapter object
8470  *
8471  * Called during initial loading of the driver.
8472  */
8473 static void
8474 _scsih_probe_sas(struct MPT3SAS_ADAPTER *ioc)
8475 {
8476         struct _sas_device *sas_device;
8477
8478         if (ioc->hide_drives)
8479                 return;
8480
8481         while ((sas_device = get_next_sas_device(ioc))) {
8482                 if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
8483                     sas_device->sas_address_parent)) {
8484                         _scsih_sas_device_remove(ioc, sas_device);
8485                         sas_device_put(sas_device);
8486                         continue;
8487                 } else if (!sas_device->starget) {
8488                         /*
8489                          * When asyn scanning is enabled, its not possible to
8490                          * remove devices while scanning is turned on due to an
8491                          * oops in scsi_sysfs_add_sdev()->add_device()->
8492                          * sysfs_addrm_start()
8493                          */
8494                         if (!ioc->is_driver_loading) {
8495                                 mpt3sas_transport_port_remove(ioc,
8496                                     sas_device->sas_address,
8497                                     sas_device->sas_address_parent);
8498                                 _scsih_sas_device_remove(ioc, sas_device);
8499                                 sas_device_put(sas_device);
8500                                 continue;
8501                         }
8502                 }
8503                 sas_device_make_active(ioc, sas_device);
8504                 sas_device_put(sas_device);
8505         }
8506 }
8507
8508 /**
8509  * _scsih_probe_devices - probing for devices
8510  * @ioc: per adapter object
8511  *
8512  * Called during initial loading of the driver.
8513  */
8514 static void
8515 _scsih_probe_devices(struct MPT3SAS_ADAPTER *ioc)
8516 {
8517         u16 volume_mapping_flags;
8518
8519         if (!(ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR))
8520                 return;  /* return when IOC doesn't support initiator mode */
8521
8522         _scsih_probe_boot_devices(ioc);
8523
8524         if (ioc->ir_firmware) {
8525                 volume_mapping_flags =
8526                     le16_to_cpu(ioc->ioc_pg8.IRVolumeMappingFlags) &
8527                     MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE;
8528                 if (volume_mapping_flags ==
8529                     MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING) {
8530                         _scsih_probe_raid(ioc);
8531                         _scsih_probe_sas(ioc);
8532                 } else {
8533                         _scsih_probe_sas(ioc);
8534                         _scsih_probe_raid(ioc);
8535                 }
8536         } else
8537                 _scsih_probe_sas(ioc);
8538 }
8539
8540 /**
8541  * scsih_scan_start - scsi lld callback for .scan_start
8542  * @shost: SCSI host pointer
8543  *
8544  * The shost has the ability to discover targets on its own instead
8545  * of scanning the entire bus.  In our implemention, we will kick off
8546  * firmware discovery.
8547  */
8548 static void
8549 scsih_scan_start(struct Scsi_Host *shost)
8550 {
8551         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8552         int rc;
8553         if (diag_buffer_enable != -1 && diag_buffer_enable != 0)
8554                 mpt3sas_enable_diag_buffer(ioc, diag_buffer_enable);
8555
8556         if (disable_discovery > 0)
8557                 return;
8558
8559         ioc->start_scan = 1;
8560         rc = mpt3sas_port_enable(ioc);
8561
8562         if (rc != 0)
8563                 pr_info(MPT3SAS_FMT "port enable: FAILED\n", ioc->name);
8564 }
8565
8566 /**
8567  * scsih_scan_finished - scsi lld callback for .scan_finished
8568  * @shost: SCSI host pointer
8569  * @time: elapsed time of the scan in jiffies
8570  *
8571  * This function will be called periodicallyn until it returns 1 with the
8572  * scsi_host and the elapsed time of the scan in jiffies. In our implemention,
8573  * we wait for firmware discovery to complete, then return 1.
8574  */
8575 static int
8576 scsih_scan_finished(struct Scsi_Host *shost, unsigned long time)
8577 {
8578         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8579
8580         if (disable_discovery > 0) {
8581                 ioc->is_driver_loading = 0;
8582                 ioc->wait_for_discovery_to_complete = 0;
8583                 return 1;
8584         }
8585
8586         if (time >= (300 * HZ)) {
8587                 ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8588                 pr_info(MPT3SAS_FMT
8589                         "port enable: FAILED with timeout (timeout=300s)\n",
8590                         ioc->name);
8591                 ioc->is_driver_loading = 0;
8592                 return 1;
8593         }
8594
8595         if (ioc->start_scan)
8596                 return 0;
8597
8598         if (ioc->start_scan_failed) {
8599                 pr_info(MPT3SAS_FMT
8600                         "port enable: FAILED with (ioc_status=0x%08x)\n",
8601                         ioc->name, ioc->start_scan_failed);
8602                 ioc->is_driver_loading = 0;
8603                 ioc->wait_for_discovery_to_complete = 0;
8604                 ioc->remove_host = 1;
8605                 return 1;
8606         }
8607
8608         pr_info(MPT3SAS_FMT "port enable: SUCCESS\n", ioc->name);
8609         ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8610
8611         if (ioc->wait_for_discovery_to_complete) {
8612                 ioc->wait_for_discovery_to_complete = 0;
8613                 _scsih_probe_devices(ioc);
8614         }
8615         mpt3sas_base_start_watchdog(ioc);
8616         ioc->is_driver_loading = 0;
8617         return 1;
8618 }
8619
8620 /* shost template for SAS 2.0 HBA devices */
8621 static struct scsi_host_template mpt2sas_driver_template = {
8622         .module                         = THIS_MODULE,
8623         .name                           = "Fusion MPT SAS Host",
8624         .proc_name                      = MPT2SAS_DRIVER_NAME,
8625         .queuecommand                   = scsih_qcmd,
8626         .target_alloc                   = scsih_target_alloc,
8627         .slave_alloc                    = scsih_slave_alloc,
8628         .slave_configure                = scsih_slave_configure,
8629         .target_destroy                 = scsih_target_destroy,
8630         .slave_destroy                  = scsih_slave_destroy,
8631         .scan_finished                  = scsih_scan_finished,
8632         .scan_start                     = scsih_scan_start,
8633         .change_queue_depth             = scsih_change_queue_depth,
8634         .eh_abort_handler               = scsih_abort,
8635         .eh_device_reset_handler        = scsih_dev_reset,
8636         .eh_target_reset_handler        = scsih_target_reset,
8637         .eh_host_reset_handler          = scsih_host_reset,
8638         .bios_param                     = scsih_bios_param,
8639         .can_queue                      = 1,
8640         .this_id                        = -1,
8641         .sg_tablesize                   = MPT2SAS_SG_DEPTH,
8642         .max_sectors                    = 32767,
8643         .cmd_per_lun                    = 7,
8644         .use_clustering                 = ENABLE_CLUSTERING,
8645         .shost_attrs                    = mpt3sas_host_attrs,
8646         .sdev_attrs                     = mpt3sas_dev_attrs,
8647         .track_queue_depth              = 1,
8648 };
8649
8650 /* raid transport support for SAS 2.0 HBA devices */
8651 static struct raid_function_template mpt2sas_raid_functions = {
8652         .cookie         = &mpt2sas_driver_template,
8653         .is_raid        = scsih_is_raid,
8654         .get_resync     = scsih_get_resync,
8655         .get_state      = scsih_get_state,
8656 };
8657
8658 /* shost template for SAS 3.0 HBA devices */
8659 static struct scsi_host_template mpt3sas_driver_template = {
8660         .module                         = THIS_MODULE,
8661         .name                           = "Fusion MPT SAS Host",
8662         .proc_name                      = MPT3SAS_DRIVER_NAME,
8663         .queuecommand                   = scsih_qcmd,
8664         .target_alloc                   = scsih_target_alloc,
8665         .slave_alloc                    = scsih_slave_alloc,
8666         .slave_configure                = scsih_slave_configure,
8667         .target_destroy                 = scsih_target_destroy,
8668         .slave_destroy                  = scsih_slave_destroy,
8669         .scan_finished                  = scsih_scan_finished,
8670         .scan_start                     = scsih_scan_start,
8671         .change_queue_depth             = scsih_change_queue_depth,
8672         .eh_abort_handler               = scsih_abort,
8673         .eh_device_reset_handler        = scsih_dev_reset,
8674         .eh_target_reset_handler        = scsih_target_reset,
8675         .eh_host_reset_handler          = scsih_host_reset,
8676         .bios_param                     = scsih_bios_param,
8677         .can_queue                      = 1,
8678         .this_id                        = -1,
8679         .sg_tablesize                   = MPT3SAS_SG_DEPTH,
8680         .max_sectors                    = 32767,
8681         .cmd_per_lun                    = 7,
8682         .use_clustering                 = ENABLE_CLUSTERING,
8683         .shost_attrs                    = mpt3sas_host_attrs,
8684         .sdev_attrs                     = mpt3sas_dev_attrs,
8685         .track_queue_depth              = 1,
8686 };
8687
8688 /* raid transport support for SAS 3.0 HBA devices */
8689 static struct raid_function_template mpt3sas_raid_functions = {
8690         .cookie         = &mpt3sas_driver_template,
8691         .is_raid        = scsih_is_raid,
8692         .get_resync     = scsih_get_resync,
8693         .get_state      = scsih_get_state,
8694 };
8695
8696 /**
8697  * _scsih_determine_hba_mpi_version - determine in which MPI version class
8698  *                                      this device belongs to.
8699  * @pdev: PCI device struct
8700  *
8701  * return MPI2_VERSION for SAS 2.0 HBA devices,
8702  *      MPI25_VERSION for SAS 3.0 HBA devices, and
8703  *      MPI26 VERSION for Cutlass & Invader SAS 3.0 HBA devices
8704  */
8705 static u16
8706 _scsih_determine_hba_mpi_version(struct pci_dev *pdev)
8707 {
8708
8709         switch (pdev->device) {
8710         case MPI2_MFGPAGE_DEVID_SSS6200:
8711         case MPI2_MFGPAGE_DEVID_SAS2004:
8712         case MPI2_MFGPAGE_DEVID_SAS2008:
8713         case MPI2_MFGPAGE_DEVID_SAS2108_1:
8714         case MPI2_MFGPAGE_DEVID_SAS2108_2:
8715         case MPI2_MFGPAGE_DEVID_SAS2108_3:
8716         case MPI2_MFGPAGE_DEVID_SAS2116_1:
8717         case MPI2_MFGPAGE_DEVID_SAS2116_2:
8718         case MPI2_MFGPAGE_DEVID_SAS2208_1:
8719         case MPI2_MFGPAGE_DEVID_SAS2208_2:
8720         case MPI2_MFGPAGE_DEVID_SAS2208_3:
8721         case MPI2_MFGPAGE_DEVID_SAS2208_4:
8722         case MPI2_MFGPAGE_DEVID_SAS2208_5:
8723         case MPI2_MFGPAGE_DEVID_SAS2208_6:
8724         case MPI2_MFGPAGE_DEVID_SAS2308_1:
8725         case MPI2_MFGPAGE_DEVID_SAS2308_2:
8726         case MPI2_MFGPAGE_DEVID_SAS2308_3:
8727                 return MPI2_VERSION;
8728         case MPI25_MFGPAGE_DEVID_SAS3004:
8729         case MPI25_MFGPAGE_DEVID_SAS3008:
8730         case MPI25_MFGPAGE_DEVID_SAS3108_1:
8731         case MPI25_MFGPAGE_DEVID_SAS3108_2:
8732         case MPI25_MFGPAGE_DEVID_SAS3108_5:
8733         case MPI25_MFGPAGE_DEVID_SAS3108_6:
8734                 return MPI25_VERSION;
8735         case MPI26_MFGPAGE_DEVID_SAS3216:
8736         case MPI26_MFGPAGE_DEVID_SAS3224:
8737         case MPI26_MFGPAGE_DEVID_SAS3316_1:
8738         case MPI26_MFGPAGE_DEVID_SAS3316_2:
8739         case MPI26_MFGPAGE_DEVID_SAS3316_3:
8740         case MPI26_MFGPAGE_DEVID_SAS3316_4:
8741         case MPI26_MFGPAGE_DEVID_SAS3324_1:
8742         case MPI26_MFGPAGE_DEVID_SAS3324_2:
8743         case MPI26_MFGPAGE_DEVID_SAS3324_3:
8744         case MPI26_MFGPAGE_DEVID_SAS3324_4:
8745         case MPI26_MFGPAGE_DEVID_SAS3508:
8746         case MPI26_MFGPAGE_DEVID_SAS3508_1:
8747         case MPI26_MFGPAGE_DEVID_SAS3408:
8748         case MPI26_MFGPAGE_DEVID_SAS3516:
8749         case MPI26_MFGPAGE_DEVID_SAS3516_1:
8750         case MPI26_MFGPAGE_DEVID_SAS3416:
8751                 return MPI26_VERSION;
8752         }
8753         return 0;
8754 }
8755
8756 /**
8757  * _scsih_probe - attach and add scsi host
8758  * @pdev: PCI device struct
8759  * @id: pci device id
8760  *
8761  * Returns 0 success, anything else error.
8762  */
8763 static int
8764 _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
8765 {
8766         struct MPT3SAS_ADAPTER *ioc;
8767         struct Scsi_Host *shost = NULL;
8768         int rv;
8769         u16 hba_mpi_version;
8770
8771         /* Determine in which MPI version class this pci device belongs */
8772         hba_mpi_version = _scsih_determine_hba_mpi_version(pdev);
8773         if (hba_mpi_version == 0)
8774                 return -ENODEV;
8775
8776         /* Enumerate only SAS 2.0 HBA's if hbas_to_enumerate is one,
8777          * for other generation HBA's return with -ENODEV
8778          */
8779         if ((hbas_to_enumerate == 1) && (hba_mpi_version !=  MPI2_VERSION))
8780                 return -ENODEV;
8781
8782         /* Enumerate only SAS 3.0 HBA's if hbas_to_enumerate is two,
8783          * for other generation HBA's return with -ENODEV
8784          */
8785         if ((hbas_to_enumerate == 2) && (!(hba_mpi_version ==  MPI25_VERSION
8786                 || hba_mpi_version ==  MPI26_VERSION)))
8787                 return -ENODEV;
8788
8789         switch (hba_mpi_version) {
8790         case MPI2_VERSION:
8791                 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S |
8792                         PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
8793                 /* Use mpt2sas driver host template for SAS 2.0 HBA's */
8794                 shost = scsi_host_alloc(&mpt2sas_driver_template,
8795                   sizeof(struct MPT3SAS_ADAPTER));
8796                 if (!shost)
8797                         return -ENODEV;
8798                 ioc = shost_priv(shost);
8799                 memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8800                 ioc->hba_mpi_version_belonged = hba_mpi_version;
8801                 ioc->id = mpt2_ids++;
8802                 sprintf(ioc->driver_name, "%s", MPT2SAS_DRIVER_NAME);
8803                 if (pdev->device == MPI2_MFGPAGE_DEVID_SSS6200) {
8804                         ioc->is_warpdrive = 1;
8805                         ioc->hide_ir_msg = 1;
8806                 } else
8807                         ioc->mfg_pg10_hide_flag = MFG_PAGE10_EXPOSE_ALL_DISKS;
8808                 break;
8809         case MPI25_VERSION:
8810         case MPI26_VERSION:
8811                 /* Use mpt3sas driver host template for SAS 3.0 HBA's */
8812                 shost = scsi_host_alloc(&mpt3sas_driver_template,
8813                   sizeof(struct MPT3SAS_ADAPTER));
8814                 if (!shost)
8815                         return -ENODEV;
8816                 ioc = shost_priv(shost);
8817                 memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8818                 ioc->hba_mpi_version_belonged = hba_mpi_version;
8819                 ioc->id = mpt3_ids++;
8820                 sprintf(ioc->driver_name, "%s", MPT3SAS_DRIVER_NAME);
8821                 switch (pdev->device) {
8822                 case MPI26_MFGPAGE_DEVID_SAS3508:
8823                 case MPI26_MFGPAGE_DEVID_SAS3508_1:
8824                 case MPI26_MFGPAGE_DEVID_SAS3408:
8825                 case MPI26_MFGPAGE_DEVID_SAS3516:
8826                 case MPI26_MFGPAGE_DEVID_SAS3516_1:
8827                 case MPI26_MFGPAGE_DEVID_SAS3416:
8828                         ioc->is_gen35_ioc = 1;
8829                         break;
8830                 default:
8831                         ioc->is_gen35_ioc = 0;
8832                 }
8833                 if ((ioc->hba_mpi_version_belonged == MPI25_VERSION &&
8834                         pdev->revision >= SAS3_PCI_DEVICE_C0_REVISION) ||
8835                         (ioc->hba_mpi_version_belonged == MPI26_VERSION)) {
8836                         ioc->combined_reply_queue = 1;
8837                         if (ioc->is_gen35_ioc)
8838                                 ioc->combined_reply_index_count =
8839                                  MPT3_SUP_REPLY_POST_HOST_INDEX_REG_COUNT_G35;
8840                         else
8841                                 ioc->combined_reply_index_count =
8842                                  MPT3_SUP_REPLY_POST_HOST_INDEX_REG_COUNT_G3;
8843                 }
8844                 break;
8845         default:
8846                 return -ENODEV;
8847         }
8848
8849         INIT_LIST_HEAD(&ioc->list);
8850         spin_lock(&gioc_lock);
8851         list_add_tail(&ioc->list, &mpt3sas_ioc_list);
8852         spin_unlock(&gioc_lock);
8853         ioc->shost = shost;
8854         ioc->pdev = pdev;
8855         ioc->scsi_io_cb_idx = scsi_io_cb_idx;
8856         ioc->tm_cb_idx = tm_cb_idx;
8857         ioc->ctl_cb_idx = ctl_cb_idx;
8858         ioc->base_cb_idx = base_cb_idx;
8859         ioc->port_enable_cb_idx = port_enable_cb_idx;
8860         ioc->transport_cb_idx = transport_cb_idx;
8861         ioc->scsih_cb_idx = scsih_cb_idx;
8862         ioc->config_cb_idx = config_cb_idx;
8863         ioc->tm_tr_cb_idx = tm_tr_cb_idx;
8864         ioc->tm_tr_volume_cb_idx = tm_tr_volume_cb_idx;
8865         ioc->tm_sas_control_cb_idx = tm_sas_control_cb_idx;
8866         ioc->logging_level = logging_level;
8867         ioc->schedule_dead_ioc_flush_running_cmds = &_scsih_flush_running_cmds;
8868         /* misc semaphores and spin locks */
8869         mutex_init(&ioc->reset_in_progress_mutex);
8870         /* initializing pci_access_mutex lock */
8871         mutex_init(&ioc->pci_access_mutex);
8872         spin_lock_init(&ioc->ioc_reset_in_progress_lock);
8873         spin_lock_init(&ioc->scsi_lookup_lock);
8874         spin_lock_init(&ioc->sas_device_lock);
8875         spin_lock_init(&ioc->sas_node_lock);
8876         spin_lock_init(&ioc->fw_event_lock);
8877         spin_lock_init(&ioc->raid_device_lock);
8878         spin_lock_init(&ioc->diag_trigger_lock);
8879
8880         INIT_LIST_HEAD(&ioc->sas_device_list);
8881         INIT_LIST_HEAD(&ioc->sas_device_init_list);
8882         INIT_LIST_HEAD(&ioc->sas_expander_list);
8883         INIT_LIST_HEAD(&ioc->fw_event_list);
8884         INIT_LIST_HEAD(&ioc->raid_device_list);
8885         INIT_LIST_HEAD(&ioc->sas_hba.sas_port_list);
8886         INIT_LIST_HEAD(&ioc->delayed_tr_list);
8887         INIT_LIST_HEAD(&ioc->delayed_sc_list);
8888         INIT_LIST_HEAD(&ioc->delayed_event_ack_list);
8889         INIT_LIST_HEAD(&ioc->delayed_tr_volume_list);
8890         INIT_LIST_HEAD(&ioc->reply_queue_list);
8891
8892         sprintf(ioc->name, "%s_cm%d", ioc->driver_name, ioc->id);
8893
8894         /* init shost parameters */
8895         shost->max_cmd_len = 32;
8896         shost->max_lun = max_lun;
8897         shost->transportt = mpt3sas_transport_template;
8898         shost->unique_id = ioc->id;
8899
8900         if (max_sectors != 0xFFFF) {
8901                 if (max_sectors < 64) {
8902                         shost->max_sectors = 64;
8903                         pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8904                             "for max_sectors, range is 64 to 32767. Assigning "
8905                             "value of 64.\n", ioc->name, max_sectors);
8906                 } else if (max_sectors > 32767) {
8907                         shost->max_sectors = 32767;
8908                         pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8909                             "for max_sectors, range is 64 to 32767. Assigning "
8910                             "default value of 32767.\n", ioc->name,
8911                             max_sectors);
8912                 } else {
8913                         shost->max_sectors = max_sectors & 0xFFFE;
8914                         pr_info(MPT3SAS_FMT
8915                                 "The max_sectors value is set to %d\n",
8916                                 ioc->name, shost->max_sectors);
8917                 }
8918         }
8919
8920         /* register EEDP capabilities with SCSI layer */
8921         if (prot_mask > 0)
8922                 scsi_host_set_prot(shost, prot_mask);
8923         else
8924                 scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION
8925                                    | SHOST_DIF_TYPE2_PROTECTION
8926                                    | SHOST_DIF_TYPE3_PROTECTION);
8927
8928         scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
8929
8930         /* event thread */
8931         snprintf(ioc->firmware_event_name, sizeof(ioc->firmware_event_name),
8932             "fw_event_%s%d", ioc->driver_name, ioc->id);
8933         ioc->firmware_event_thread = alloc_ordered_workqueue(
8934             ioc->firmware_event_name, WQ_MEM_RECLAIM);
8935         if (!ioc->firmware_event_thread) {
8936                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8937                     ioc->name, __FILE__, __LINE__, __func__);
8938                 rv = -ENODEV;
8939                 goto out_thread_fail;
8940         }
8941
8942         ioc->is_driver_loading = 1;
8943         if ((mpt3sas_base_attach(ioc))) {
8944                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8945                     ioc->name, __FILE__, __LINE__, __func__);
8946                 rv = -ENODEV;
8947                 goto out_attach_fail;
8948         }
8949
8950         if (ioc->is_warpdrive) {
8951                 if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_EXPOSE_ALL_DISKS)
8952                         ioc->hide_drives = 0;
8953                 else if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_HIDE_ALL_DISKS)
8954                         ioc->hide_drives = 1;
8955                 else {
8956                         if (mpt3sas_get_num_volumes(ioc))
8957                                 ioc->hide_drives = 1;
8958                         else
8959                                 ioc->hide_drives = 0;
8960                 }
8961         } else
8962                 ioc->hide_drives = 0;
8963
8964         rv = scsi_add_host(shost, &pdev->dev);
8965         if (rv) {
8966                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8967                     ioc->name, __FILE__, __LINE__, __func__);
8968                 goto out_add_shost_fail;
8969         }
8970
8971         scsi_scan_host(shost);
8972         return 0;
8973 out_add_shost_fail:
8974         mpt3sas_base_detach(ioc);
8975  out_attach_fail:
8976         destroy_workqueue(ioc->firmware_event_thread);
8977  out_thread_fail:
8978         spin_lock(&gioc_lock);
8979         list_del(&ioc->list);
8980         spin_unlock(&gioc_lock);
8981         scsi_host_put(shost);
8982         return rv;
8983 }
8984
8985 #ifdef CONFIG_PM
8986 /**
8987  * scsih_suspend - power management suspend main entry point
8988  * @pdev: PCI device struct
8989  * @state: PM state change to (usually PCI_D3)
8990  *
8991  * Returns 0 success, anything else error.
8992  */
8993 static int
8994 scsih_suspend(struct pci_dev *pdev, pm_message_t state)
8995 {
8996         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8997         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8998         pci_power_t device_state;
8999
9000         mpt3sas_base_stop_watchdog(ioc);
9001         flush_scheduled_work();
9002         scsi_block_requests(shost);
9003         device_state = pci_choose_state(pdev, state);
9004         pr_info(MPT3SAS_FMT
9005                 "pdev=0x%p, slot=%s, entering operating state [D%d]\n",
9006                 ioc->name, pdev, pci_name(pdev), device_state);
9007
9008         pci_save_state(pdev);
9009         mpt3sas_base_free_resources(ioc);
9010         pci_set_power_state(pdev, device_state);
9011         return 0;
9012 }
9013
9014 /**
9015  * scsih_resume - power management resume main entry point
9016  * @pdev: PCI device struct
9017  *
9018  * Returns 0 success, anything else error.
9019  */
9020 static int
9021 scsih_resume(struct pci_dev *pdev)
9022 {
9023         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9024         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9025         pci_power_t device_state = pdev->current_state;
9026         int r;
9027
9028         pr_info(MPT3SAS_FMT
9029                 "pdev=0x%p, slot=%s, previous operating state [D%d]\n",
9030                 ioc->name, pdev, pci_name(pdev), device_state);
9031
9032         pci_set_power_state(pdev, PCI_D0);
9033         pci_enable_wake(pdev, PCI_D0, 0);
9034         pci_restore_state(pdev);
9035         ioc->pdev = pdev;
9036         r = mpt3sas_base_map_resources(ioc);
9037         if (r)
9038                 return r;
9039
9040         mpt3sas_base_hard_reset_handler(ioc, SOFT_RESET);
9041         scsi_unblock_requests(shost);
9042         mpt3sas_base_start_watchdog(ioc);
9043         return 0;
9044 }
9045 #endif /* CONFIG_PM */
9046
9047 /**
9048  * scsih_pci_error_detected - Called when a PCI error is detected.
9049  * @pdev: PCI device struct
9050  * @state: PCI channel state
9051  *
9052  * Description: Called when a PCI error is detected.
9053  *
9054  * Return value:
9055  *      PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9056  */
9057 static pci_ers_result_t
9058 scsih_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9059 {
9060         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9061         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9062
9063         pr_info(MPT3SAS_FMT "PCI error: detected callback, state(%d)!!\n",
9064             ioc->name, state);
9065
9066         switch (state) {
9067         case pci_channel_io_normal:
9068                 return PCI_ERS_RESULT_CAN_RECOVER;
9069         case pci_channel_io_frozen:
9070                 /* Fatal error, prepare for slot reset */
9071                 ioc->pci_error_recovery = 1;
9072                 scsi_block_requests(ioc->shost);
9073                 mpt3sas_base_stop_watchdog(ioc);
9074                 mpt3sas_base_free_resources(ioc);
9075                 return PCI_ERS_RESULT_NEED_RESET;
9076         case pci_channel_io_perm_failure:
9077                 /* Permanent error, prepare for device removal */
9078                 ioc->pci_error_recovery = 1;
9079                 mpt3sas_base_stop_watchdog(ioc);
9080                 _scsih_flush_running_cmds(ioc);
9081                 return PCI_ERS_RESULT_DISCONNECT;
9082         }
9083         return PCI_ERS_RESULT_NEED_RESET;
9084 }
9085
9086 /**
9087  * scsih_pci_slot_reset - Called when PCI slot has been reset.
9088  * @pdev: PCI device struct
9089  *
9090  * Description: This routine is called by the pci error recovery
9091  * code after the PCI slot has been reset, just before we
9092  * should resume normal operations.
9093  */
9094 static pci_ers_result_t
9095 scsih_pci_slot_reset(struct pci_dev *pdev)
9096 {
9097         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9098         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9099         int rc;
9100
9101         pr_info(MPT3SAS_FMT "PCI error: slot reset callback!!\n",
9102              ioc->name);
9103
9104         ioc->pci_error_recovery = 0;
9105         ioc->pdev = pdev;
9106         pci_restore_state(pdev);
9107         rc = mpt3sas_base_map_resources(ioc);
9108         if (rc)
9109                 return PCI_ERS_RESULT_DISCONNECT;
9110
9111         rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
9112
9113         pr_warn(MPT3SAS_FMT "hard reset: %s\n", ioc->name,
9114             (rc == 0) ? "success" : "failed");
9115
9116         if (!rc)
9117                 return PCI_ERS_RESULT_RECOVERED;
9118         else
9119                 return PCI_ERS_RESULT_DISCONNECT;
9120 }
9121
9122 /**
9123  * scsih_pci_resume() - resume normal ops after PCI reset
9124  * @pdev: pointer to PCI device
9125  *
9126  * Called when the error recovery driver tells us that its
9127  * OK to resume normal operation. Use completion to allow
9128  * halted scsi ops to resume.
9129  */
9130 static void
9131 scsih_pci_resume(struct pci_dev *pdev)
9132 {
9133         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9134         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9135
9136         pr_info(MPT3SAS_FMT "PCI error: resume callback!!\n", ioc->name);
9137
9138         pci_cleanup_aer_uncorrect_error_status(pdev);
9139         mpt3sas_base_start_watchdog(ioc);
9140         scsi_unblock_requests(ioc->shost);
9141 }
9142
9143 /**
9144  * scsih_pci_mmio_enabled - Enable MMIO and dump debug registers
9145  * @pdev: pointer to PCI device
9146  */
9147 static pci_ers_result_t
9148 scsih_pci_mmio_enabled(struct pci_dev *pdev)
9149 {
9150         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9151         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9152
9153         pr_info(MPT3SAS_FMT "PCI error: mmio enabled callback!!\n",
9154             ioc->name);
9155
9156         /* TODO - dump whatever for debugging purposes */
9157
9158         /* This called only if scsih_pci_error_detected returns
9159          * PCI_ERS_RESULT_CAN_RECOVER. Read/write to the device still
9160          * works, no need to reset slot.
9161          */
9162         return PCI_ERS_RESULT_RECOVERED;
9163 }
9164
9165 /**
9166  * scsih__ncq_prio_supp - Check for NCQ command priority support
9167  * @sdev: scsi device struct
9168  *
9169  * This is called when a user indicates they would like to enable
9170  * ncq command priorities. This works only on SATA devices.
9171  */
9172 bool scsih_ncq_prio_supp(struct scsi_device *sdev)
9173 {
9174         unsigned char *buf;
9175         bool ncq_prio_supp = false;
9176
9177         if (!scsi_device_supports_vpd(sdev))
9178                 return ncq_prio_supp;
9179
9180         buf = kmalloc(SCSI_VPD_PG_LEN, GFP_KERNEL);
9181         if (!buf)
9182                 return ncq_prio_supp;
9183
9184         if (!scsi_get_vpd_page(sdev, 0x89, buf, SCSI_VPD_PG_LEN))
9185                 ncq_prio_supp = (buf[213] >> 4) & 1;
9186
9187         kfree(buf);
9188         return ncq_prio_supp;
9189 }
9190 /*
9191  * The pci device ids are defined in mpi/mpi2_cnfg.h.
9192  */
9193 static const struct pci_device_id mpt3sas_pci_table[] = {
9194         /* Spitfire ~ 2004 */
9195         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2004,
9196                 PCI_ANY_ID, PCI_ANY_ID },
9197         /* Falcon ~ 2008 */
9198         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2008,
9199                 PCI_ANY_ID, PCI_ANY_ID },
9200         /* Liberator ~ 2108 */
9201         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_1,
9202                 PCI_ANY_ID, PCI_ANY_ID },
9203         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_2,
9204                 PCI_ANY_ID, PCI_ANY_ID },
9205         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_3,
9206                 PCI_ANY_ID, PCI_ANY_ID },
9207         /* Meteor ~ 2116 */
9208         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_1,
9209                 PCI_ANY_ID, PCI_ANY_ID },
9210         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_2,
9211                 PCI_ANY_ID, PCI_ANY_ID },
9212         /* Thunderbolt ~ 2208 */
9213         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_1,
9214                 PCI_ANY_ID, PCI_ANY_ID },
9215         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_2,
9216                 PCI_ANY_ID, PCI_ANY_ID },
9217         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_3,
9218                 PCI_ANY_ID, PCI_ANY_ID },
9219         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_4,
9220                 PCI_ANY_ID, PCI_ANY_ID },
9221         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_5,
9222                 PCI_ANY_ID, PCI_ANY_ID },
9223         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_6,
9224                 PCI_ANY_ID, PCI_ANY_ID },
9225         /* Mustang ~ 2308 */
9226         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_1,
9227                 PCI_ANY_ID, PCI_ANY_ID },
9228         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_2,
9229                 PCI_ANY_ID, PCI_ANY_ID },
9230         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_3,
9231                 PCI_ANY_ID, PCI_ANY_ID },
9232         /* SSS6200 */
9233         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SSS6200,
9234                 PCI_ANY_ID, PCI_ANY_ID },
9235         /* Fury ~ 3004 and 3008 */
9236         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3004,
9237                 PCI_ANY_ID, PCI_ANY_ID },
9238         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3008,
9239                 PCI_ANY_ID, PCI_ANY_ID },
9240         /* Invader ~ 3108 */
9241         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_1,
9242                 PCI_ANY_ID, PCI_ANY_ID },
9243         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_2,
9244                 PCI_ANY_ID, PCI_ANY_ID },
9245         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_5,
9246                 PCI_ANY_ID, PCI_ANY_ID },
9247         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_6,
9248                 PCI_ANY_ID, PCI_ANY_ID },
9249         /* Cutlass ~ 3216 and 3224 */
9250         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3216,
9251                 PCI_ANY_ID, PCI_ANY_ID },
9252         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3224,
9253                 PCI_ANY_ID, PCI_ANY_ID },
9254         /* Intruder ~ 3316 and 3324 */
9255         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_1,
9256                 PCI_ANY_ID, PCI_ANY_ID },
9257         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_2,
9258                 PCI_ANY_ID, PCI_ANY_ID },
9259         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_3,
9260                 PCI_ANY_ID, PCI_ANY_ID },
9261         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_4,
9262                 PCI_ANY_ID, PCI_ANY_ID },
9263         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_1,
9264                 PCI_ANY_ID, PCI_ANY_ID },
9265         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_2,
9266                 PCI_ANY_ID, PCI_ANY_ID },
9267         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_3,
9268                 PCI_ANY_ID, PCI_ANY_ID },
9269         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_4,
9270                 PCI_ANY_ID, PCI_ANY_ID },
9271         /* Ventura, Crusader, Harpoon & Tomcat ~ 3516, 3416, 3508 & 3408*/
9272         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3508,
9273                 PCI_ANY_ID, PCI_ANY_ID },
9274         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3508_1,
9275                 PCI_ANY_ID, PCI_ANY_ID },
9276         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3408,
9277                 PCI_ANY_ID, PCI_ANY_ID },
9278         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3516,
9279                 PCI_ANY_ID, PCI_ANY_ID },
9280         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3516_1,
9281                 PCI_ANY_ID, PCI_ANY_ID },
9282         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3416,
9283                 PCI_ANY_ID, PCI_ANY_ID },
9284         {0}     /* Terminating entry */
9285 };
9286 MODULE_DEVICE_TABLE(pci, mpt3sas_pci_table);
9287
9288 static struct pci_error_handlers _mpt3sas_err_handler = {
9289         .error_detected = scsih_pci_error_detected,
9290         .mmio_enabled   = scsih_pci_mmio_enabled,
9291         .slot_reset     = scsih_pci_slot_reset,
9292         .resume         = scsih_pci_resume,
9293 };
9294
9295 static struct pci_driver mpt3sas_driver = {
9296         .name           = MPT3SAS_DRIVER_NAME,
9297         .id_table       = mpt3sas_pci_table,
9298         .probe          = _scsih_probe,
9299         .remove         = scsih_remove,
9300         .shutdown       = scsih_shutdown,
9301         .err_handler    = &_mpt3sas_err_handler,
9302 #ifdef CONFIG_PM
9303         .suspend        = scsih_suspend,
9304         .resume         = scsih_resume,
9305 #endif
9306 };
9307
9308 /**
9309  * scsih_init - main entry point for this driver.
9310  *
9311  * Returns 0 success, anything else error.
9312  */
9313 static int
9314 scsih_init(void)
9315 {
9316         mpt2_ids = 0;
9317         mpt3_ids = 0;
9318
9319         mpt3sas_base_initialize_callback_handler();
9320
9321          /* queuecommand callback hander */
9322         scsi_io_cb_idx = mpt3sas_base_register_callback_handler(_scsih_io_done);
9323
9324         /* task management callback handler */
9325         tm_cb_idx = mpt3sas_base_register_callback_handler(_scsih_tm_done);
9326
9327         /* base internal commands callback handler */
9328         base_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_base_done);
9329         port_enable_cb_idx = mpt3sas_base_register_callback_handler(
9330             mpt3sas_port_enable_done);
9331
9332         /* transport internal commands callback handler */
9333         transport_cb_idx = mpt3sas_base_register_callback_handler(
9334             mpt3sas_transport_done);
9335
9336         /* scsih internal commands callback handler */
9337         scsih_cb_idx = mpt3sas_base_register_callback_handler(_scsih_done);
9338
9339         /* configuration page API internal commands callback handler */
9340         config_cb_idx = mpt3sas_base_register_callback_handler(
9341             mpt3sas_config_done);
9342
9343         /* ctl module callback handler */
9344         ctl_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_ctl_done);
9345
9346         tm_tr_cb_idx = mpt3sas_base_register_callback_handler(
9347             _scsih_tm_tr_complete);
9348
9349         tm_tr_volume_cb_idx = mpt3sas_base_register_callback_handler(
9350             _scsih_tm_volume_tr_complete);
9351
9352         tm_sas_control_cb_idx = mpt3sas_base_register_callback_handler(
9353             _scsih_sas_control_complete);
9354
9355         return 0;
9356 }
9357
9358 /**
9359  * scsih_exit - exit point for this driver (when it is a module).
9360  *
9361  * Returns 0 success, anything else error.
9362  */
9363 static void
9364 scsih_exit(void)
9365 {
9366
9367         mpt3sas_base_release_callback_handler(scsi_io_cb_idx);
9368         mpt3sas_base_release_callback_handler(tm_cb_idx);
9369         mpt3sas_base_release_callback_handler(base_cb_idx);
9370         mpt3sas_base_release_callback_handler(port_enable_cb_idx);
9371         mpt3sas_base_release_callback_handler(transport_cb_idx);
9372         mpt3sas_base_release_callback_handler(scsih_cb_idx);
9373         mpt3sas_base_release_callback_handler(config_cb_idx);
9374         mpt3sas_base_release_callback_handler(ctl_cb_idx);
9375
9376         mpt3sas_base_release_callback_handler(tm_tr_cb_idx);
9377         mpt3sas_base_release_callback_handler(tm_tr_volume_cb_idx);
9378         mpt3sas_base_release_callback_handler(tm_sas_control_cb_idx);
9379
9380 /* raid transport support */
9381         if (hbas_to_enumerate != 1)
9382                 raid_class_release(mpt3sas_raid_template);
9383         if (hbas_to_enumerate != 2)
9384                 raid_class_release(mpt2sas_raid_template);
9385         sas_release_transport(mpt3sas_transport_template);
9386 }
9387
9388 /**
9389  * _mpt3sas_init - main entry point for this driver.
9390  *
9391  * Returns 0 success, anything else error.
9392  */
9393 static int __init
9394 _mpt3sas_init(void)
9395 {
9396         int error;
9397
9398         pr_info("%s version %s loaded\n", MPT3SAS_DRIVER_NAME,
9399                                         MPT3SAS_DRIVER_VERSION);
9400
9401         mpt3sas_transport_template =
9402             sas_attach_transport(&mpt3sas_transport_functions);
9403         if (!mpt3sas_transport_template)
9404                 return -ENODEV;
9405
9406         /* No need attach mpt3sas raid functions template
9407          * if hbas_to_enumarate value is one.
9408          */
9409         if (hbas_to_enumerate != 1) {
9410                 mpt3sas_raid_template =
9411                                 raid_class_attach(&mpt3sas_raid_functions);
9412                 if (!mpt3sas_raid_template) {
9413                         sas_release_transport(mpt3sas_transport_template);
9414                         return -ENODEV;
9415                 }
9416         }
9417
9418         /* No need to attach mpt2sas raid functions template
9419          * if hbas_to_enumarate value is two
9420          */
9421         if (hbas_to_enumerate != 2) {
9422                 mpt2sas_raid_template =
9423                                 raid_class_attach(&mpt2sas_raid_functions);
9424                 if (!mpt2sas_raid_template) {
9425                         sas_release_transport(mpt3sas_transport_template);
9426                         return -ENODEV;
9427                 }
9428         }
9429
9430         error = scsih_init();
9431         if (error) {
9432                 scsih_exit();
9433                 return error;
9434         }
9435
9436         mpt3sas_ctl_init(hbas_to_enumerate);
9437
9438         error = pci_register_driver(&mpt3sas_driver);
9439         if (error)
9440                 scsih_exit();
9441
9442         return error;
9443 }
9444
9445 /**
9446  * _mpt3sas_exit - exit point for this driver (when it is a module).
9447  *
9448  */
9449 static void __exit
9450 _mpt3sas_exit(void)
9451 {
9452         pr_info("mpt3sas version %s unloading\n",
9453                                 MPT3SAS_DRIVER_VERSION);
9454
9455         pci_unregister_driver(&mpt3sas_driver);
9456
9457         mpt3sas_ctl_exit(hbas_to_enumerate);
9458
9459         scsih_exit();
9460 }
9461
9462 module_init(_mpt3sas_init);
9463 module_exit(_mpt3sas_exit);