drivers/scsi/mpt3sas/mpt3sas_scsih.c

   1 /*
   2  * Scsi Host Layer for MPT (Message Passing Technology) based controllers
   3  *
   4  * This code is based on drivers/scsi/mpt3sas/mpt3sas_scsih.c
   5  * Copyright (C) 2012-2014  LSI Corporation
   6  * Copyright (C) 2013-2014 Avago Technologies
   7  *  (mailto: MPT-FusionLinux.pdl@avagotech.com)
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * NO WARRANTY
  20  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  21  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  22  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  23  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  24  * solely responsible for determining the appropriateness of using and
  25  * distributing the Program and assumes all risks associated with its
  26  * exercise of rights under this Agreement, including but not limited to
  27  * the risks and costs of program errors, damage to or loss of data,
  28  * programs or equipment, and unavailability or interruption of operations.
  29
  30  * DISCLAIMER OF LIABILITY
  31  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  32  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  34  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  35  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  36  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  37  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  38
  39  * You should have received a copy of the GNU General Public License
  40  * along with this program; if not, write to the Free Software
  41  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  42  * USA.
  43  */
  44
  45 #include <linux/module.h>
  46 #include <linux/kernel.h>
  47 #include <linux/init.h>
  48 #include <linux/errno.h>
  49 #include <linux/blkdev.h>
  50 #include <linux/sched.h>
  51 #include <linux/workqueue.h>
  52 #include <linux/delay.h>
  53 #include <linux/pci.h>
  54 #include <linux/interrupt.h>
  55 #include <linux/aer.h>
  56 #include <linux/raid_class.h>
  57 #include <asm/unaligned.h>
  58
  59 #include "mpt3sas_base.h"
  60
  61 #define RAID_CHANNEL 1
  62 /* forward proto's */
  63 static void _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
  64         struct _sas_node *sas_expander);
  65 static void _firmware_event_work(struct work_struct *work);
  66
  67 static void _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
  68         struct _sas_device *sas_device);
  69 static int _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle,
  70         u8 retry_count, u8 is_pd);
  71
  72 static u8 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid);
  73
  74 /* global parameters */
  75 LIST_HEAD(mpt3sas_ioc_list);
  76 /* global ioc lock for list operations */
  77 DEFINE_SPINLOCK(gioc_lock);
  78
  79 MODULE_AUTHOR(MPT3SAS_AUTHOR);
  80 MODULE_DESCRIPTION(MPT3SAS_DESCRIPTION);
  81 MODULE_LICENSE("GPL");
  82 MODULE_VERSION(MPT3SAS_DRIVER_VERSION);
  83 MODULE_ALIAS("mpt2sas");
  84
  85 /* local parameters */
  86 static u8 scsi_io_cb_idx = -1;
  87 static u8 tm_cb_idx = -1;
  88 static u8 ctl_cb_idx = -1;
  89 static u8 base_cb_idx = -1;
  90 static u8 port_enable_cb_idx = -1;
  91 static u8 transport_cb_idx = -1;
  92 static u8 scsih_cb_idx = -1;
  93 static u8 config_cb_idx = -1;
  94 static int mpt2_ids;
  95 static int mpt3_ids;
  96
  97 static u8 tm_tr_cb_idx = -1 ;
  98 static u8 tm_tr_volume_cb_idx = -1 ;
  99 static u8 tm_sas_control_cb_idx = -1;
 100
 101 /* command line options */
 102 static u32 logging_level;
 103 MODULE_PARM_DESC(logging_level,
 104         " bits for enabling additional logging info (default=0)");
 105
 106
 107 static ushort max_sectors = 0xFFFF;
 108 module_param(max_sectors, ushort, 0);
 109 MODULE_PARM_DESC(max_sectors, "max sectors, range 64 to 32767  default=32767");
 110
 111
 112 static int missing_delay[2] = {-1, -1};
 113 module_param_array(missing_delay, int, NULL, 0);
 114 MODULE_PARM_DESC(missing_delay, " device missing delay , io missing delay");
 115
 116 /* scsi-mid layer global parmeter is max_report_luns, which is 511 */
 117 #define MPT3SAS_MAX_LUN (16895)
 118 static u64 max_lun = MPT3SAS_MAX_LUN;
 119 module_param(max_lun, ullong, 0);
 120 MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");
 121
 122 static ushort hbas_to_enumerate;
 123 module_param(hbas_to_enumerate, ushort, 0);
 124 MODULE_PARM_DESC(hbas_to_enumerate,
 125                 " 0 - enumerates both SAS 2.0 & SAS 3.0 generation HBAs\n \
 126                   1 - enumerates only SAS 2.0 generation HBAs\n \
 127                   2 - enumerates only SAS 3.0 generation HBAs (default=0)");
 128
 129 /* diag_buffer_enable is bitwise
 130  * bit 0 set = TRACE
 131  * bit 1 set = SNAPSHOT
 132  * bit 2 set = EXTENDED
 133  *
 134  * Either bit can be set, or both
 135  */
 136 static int diag_buffer_enable = -1;
 137 module_param(diag_buffer_enable, int, 0);
 138 MODULE_PARM_DESC(diag_buffer_enable,
 139         " post diag buffers (TRACE=1/SNAPSHOT=2/EXTENDED=4/default=0)");
 140 static int disable_discovery = -1;
 141 module_param(disable_discovery, int, 0);
 142 MODULE_PARM_DESC(disable_discovery, " disable discovery ");
 143
 144
 145 /* permit overriding the host protection capabilities mask (EEDP/T10 PI) */
 146 static int prot_mask = -1;
 147 module_param(prot_mask, int, 0);
 148 MODULE_PARM_DESC(prot_mask, " host protection capabilities mask, def=7 ");
 149
 150
 151 /* raid transport support */
 152 struct raid_template *mpt3sas_raid_template;
 153 struct raid_template *mpt2sas_raid_template;
 154
 155
 156 /**
 157  * struct sense_info - common structure for obtaining sense keys
 158  * @skey: sense key
 159  * @asc: additional sense code
 160  * @ascq: additional sense code qualifier
 161  */
 162 struct sense_info {
 163         u8 skey;
 164         u8 asc;
 165         u8 ascq;
 166 };
 167
 168 #define MPT3SAS_PROCESS_TRIGGER_DIAG (0xFFFB)
 169 #define MPT3SAS_TURN_ON_PFA_LED (0xFFFC)
 170 #define MPT3SAS_PORT_ENABLE_COMPLETE (0xFFFD)
 171 #define MPT3SAS_ABRT_TASK_SET (0xFFFE)
 172 #define MPT3SAS_REMOVE_UNRESPONDING_DEVICES (0xFFFF)
 173 /**
 174  * struct fw_event_work - firmware event struct
 175  * @list: link list framework
 176  * @work: work object (ioc->fault_reset_work_q)
 177  * @ioc: per adapter object
 178  * @device_handle: device handle
 179  * @VF_ID: virtual function id
 180  * @VP_ID: virtual port id
 181  * @ignore: flag meaning this event has been marked to ignore
 182  * @event: firmware event MPI2_EVENT_XXX defined in mpi2_ioc.h
 183  * @refcount: kref for this event
 184  * @event_data: reply event data payload follows
 185  *
 186  * This object stored on ioc->fw_event_list.
 187  */
 188 struct fw_event_work {
 189         struct list_head        list;
 190         struct work_struct      work;
 191
 192         struct MPT3SAS_ADAPTER *ioc;
 193         u16                     device_handle;
 194         u8                      VF_ID;
 195         u8                      VP_ID;
 196         u8                      ignore;
 197         u16                     event;
 198         struct kref             refcount;
 199         char                    event_data[0] __aligned(4);
 200 };
 201
 202 static void fw_event_work_free(struct kref *r)
 203 {
 204         kfree(container_of(r, struct fw_event_work, refcount));
 205 }
 206
 207 static void fw_event_work_get(struct fw_event_work *fw_work)
 208 {
 209         kref_get(&fw_work->refcount);
 210 }
 211
 212 static void fw_event_work_put(struct fw_event_work *fw_work)
 213 {
 214         kref_put(&fw_work->refcount, fw_event_work_free);
 215 }
 216
 217 static struct fw_event_work *alloc_fw_event_work(int len)
 218 {
 219         struct fw_event_work *fw_event;
 220
 221         fw_event = kzalloc(sizeof(*fw_event) + len, GFP_ATOMIC);
 222         if (!fw_event)
 223                 return NULL;
 224
 225         kref_init(&fw_event->refcount);
 226         return fw_event;
 227 }
 228
 229 /**
 230  * struct _scsi_io_transfer - scsi io transfer
 231  * @handle: sas device handle (assigned by firmware)
 232  * @is_raid: flag set for hidden raid components
 233  * @dir: DMA_TO_DEVICE, DMA_FROM_DEVICE,
 234  * @data_length: data transfer length
 235  * @data_dma: dma pointer to data
 236  * @sense: sense data
 237  * @lun: lun number
 238  * @cdb_length: cdb length
 239  * @cdb: cdb contents
 240  * @timeout: timeout for this command
 241  * @VF_ID: virtual function id
 242  * @VP_ID: virtual port id
 243  * @valid_reply: flag set for reply message
 244  * @sense_length: sense length
 245  * @ioc_status: ioc status
 246  * @scsi_state: scsi state
 247  * @scsi_status: scsi staus
 248  * @log_info: log information
 249  * @transfer_length: data length transfer when there is a reply message
 250  *
 251  * Used for sending internal scsi commands to devices within this module.
 252  * Refer to _scsi_send_scsi_io().
 253  */
 254 struct _scsi_io_transfer {
 255         u16     handle;
 256         u8      is_raid;
 257         enum dma_data_direction dir;
 258         u32     data_length;
 259         dma_addr_t data_dma;
 260         u8      sense[SCSI_SENSE_BUFFERSIZE];
 261         u32     lun;
 262         u8      cdb_length;
 263         u8      cdb[32];
 264         u8      timeout;
 265         u8      VF_ID;
 266         u8      VP_ID;
 267         u8      valid_reply;
 268   /* the following bits are only valid when 'valid_reply = 1' */
 269         u32     sense_length;
 270         u16     ioc_status;
 271         u8      scsi_state;
 272         u8      scsi_status;
 273         u32     log_info;
 274         u32     transfer_length;
 275 };
 276
 277 /**
 278  * _scsih_set_debug_level - global setting of ioc->logging_level.
 279  *
 280  * Note: The logging levels are defined in mpt3sas_debug.h.
 281  */
 282 static int
 283 _scsih_set_debug_level(const char *val, struct kernel_param *kp)
 284 {
 285         int ret = param_set_int(val, kp);
 286         struct MPT3SAS_ADAPTER *ioc;
 287
 288         if (ret)
 289                 return ret;
 290
 291         pr_info("setting logging_level(0x%08x)\n", logging_level);
 292         spin_lock(&gioc_lock);
 293         list_for_each_entry(ioc, &mpt3sas_ioc_list, list)
 294                 ioc->logging_level = logging_level;
 295         spin_unlock(&gioc_lock);
 296         return 0;
 297 }
 298 module_param_call(logging_level, _scsih_set_debug_level, param_get_int,
 299         &logging_level, 0644);
 300
 301 /**
 302  * _scsih_srch_boot_sas_address - search based on sas_address
 303  * @sas_address: sas address
 304  * @boot_device: boot device object from bios page 2
 305  *
 306  * Returns 1 when there's a match, 0 means no match.
 307  */
 308 static inline int
 309 _scsih_srch_boot_sas_address(u64 sas_address,
 310         Mpi2BootDeviceSasWwid_t *boot_device)
 311 {
 312         return (sas_address == le64_to_cpu(boot_device->SASAddress)) ?  1 : 0;
 313 }
 314
 315 /**
 316  * _scsih_srch_boot_device_name - search based on device name
 317  * @device_name: device name specified in INDENTIFY fram
 318  * @boot_device: boot device object from bios page 2
 319  *
 320  * Returns 1 when there's a match, 0 means no match.
 321  */
 322 static inline int
 323 _scsih_srch_boot_device_name(u64 device_name,
 324         Mpi2BootDeviceDeviceName_t *boot_device)
 325 {
 326         return (device_name == le64_to_cpu(boot_device->DeviceName)) ? 1 : 0;
 327 }
 328
 329 /**
 330  * _scsih_srch_boot_encl_slot - search based on enclosure_logical_id/slot
 331  * @enclosure_logical_id: enclosure logical id
 332  * @slot_number: slot number
 333  * @boot_device: boot device object from bios page 2
 334  *
 335  * Returns 1 when there's a match, 0 means no match.
 336  */
 337 static inline int
 338 _scsih_srch_boot_encl_slot(u64 enclosure_logical_id, u16 slot_number,
 339         Mpi2BootDeviceEnclosureSlot_t *boot_device)
 340 {
 341         return (enclosure_logical_id == le64_to_cpu(boot_device->
 342             EnclosureLogicalID) && slot_number == le16_to_cpu(boot_device->
 343             SlotNumber)) ? 1 : 0;
 344 }
 345
 346 /**
 347  * _scsih_is_boot_device - search for matching boot device.
 348  * @sas_address: sas address
 349  * @device_name: device name specified in INDENTIFY fram
 350  * @enclosure_logical_id: enclosure logical id
 351  * @slot_number: slot number
 352  * @form: specifies boot device form
 353  * @boot_device: boot device object from bios page 2
 354  *
 355  * Returns 1 when there's a match, 0 means no match.
 356  */
 357 static int
 358 _scsih_is_boot_device(u64 sas_address, u64 device_name,
 359         u64 enclosure_logical_id, u16 slot, u8 form,
 360         Mpi2BiosPage2BootDevice_t *boot_device)
 361 {
 362         int rc = 0;
 363
 364         switch (form) {
 365         case MPI2_BIOSPAGE2_FORM_SAS_WWID:
 366                 if (!sas_address)
 367                         break;
 368                 rc = _scsih_srch_boot_sas_address(
 369                     sas_address, &boot_device->SasWwid);
 370                 break;
 371         case MPI2_BIOSPAGE2_FORM_ENCLOSURE_SLOT:
 372                 if (!enclosure_logical_id)
 373                         break;
 374                 rc = _scsih_srch_boot_encl_slot(
 375                     enclosure_logical_id,
 376                     slot, &boot_device->EnclosureSlot);
 377                 break;
 378         case MPI2_BIOSPAGE2_FORM_DEVICE_NAME:
 379                 if (!device_name)
 380                         break;
 381                 rc = _scsih_srch_boot_device_name(
 382                     device_name, &boot_device->DeviceName);
 383                 break;
 384         case MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED:
 385                 break;
 386         }
 387
 388         return rc;
 389 }
 390
 391 /**
 392  * _scsih_get_sas_address - set the sas_address for given device handle
 393  * @handle: device handle
 394  * @sas_address: sas address
 395  *
 396  * Returns 0 success, non-zero when failure
 397  */
 398 static int
 399 _scsih_get_sas_address(struct MPT3SAS_ADAPTER *ioc, u16 handle,
 400         u64 *sas_address)
 401 {
 402         Mpi2SasDevicePage0_t sas_device_pg0;
 403         Mpi2ConfigReply_t mpi_reply;
 404         u32 ioc_status;
 405
 406         *sas_address = 0;
 407
 408         if (handle <= ioc->sas_hba.num_phys) {
 409                 *sas_address = ioc->sas_hba.sas_address;
 410                 return 0;
 411         }
 412
 413         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
 414             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
 415                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
 416                 __FILE__, __LINE__, __func__);
 417                 return -ENXIO;
 418         }
 419
 420         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
 421         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
 422                 *sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
 423                 return 0;
 424         }
 425
 426         /* we hit this becuase the given parent handle doesn't exist */
 427         if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
 428                 return -ENXIO;
 429
 430         /* else error case */
 431         pr_err(MPT3SAS_FMT
 432                 "handle(0x%04x), ioc_status(0x%04x), failure at %s:%d/%s()!\n",
 433                 ioc->name, handle, ioc_status,
 434              __FILE__, __LINE__, __func__);
 435         return -EIO;
 436 }
 437
 438 /**
 439  * _scsih_determine_boot_device - determine boot device.
 440  * @ioc: per adapter object
 441  * @device: either sas_device or raid_device object
 442  * @is_raid: [flag] 1 = raid object, 0 = sas object
 443  *
 444  * Determines whether this device should be first reported device to
 445  * to scsi-ml or sas transport, this purpose is for persistent boot device.
 446  * There are primary, alternate, and current entries in bios page 2. The order
 447  * priority is primary, alternate, then current.  This routine saves
 448  * the corresponding device object and is_raid flag in the ioc object.
 449  * The saved data to be used later in _scsih_probe_boot_devices().
 450  */
 451 static void
 452 _scsih_determine_boot_device(struct MPT3SAS_ADAPTER *ioc,
 453         void *device, u8 is_raid)
 454 {
 455         struct _sas_device *sas_device;
 456         struct _raid_device *raid_device;
 457         u64 sas_address;
 458         u64 device_name;
 459         u64 enclosure_logical_id;
 460         u16 slot;
 461
 462          /* only process this function when driver loads */
 463         if (!ioc->is_driver_loading)
 464                 return;
 465
 466          /* no Bios, return immediately */
 467         if (!ioc->bios_pg3.BiosVersion)
 468                 return;
 469
 470         if (!is_raid) {
 471                 sas_device = device;
 472                 sas_address = sas_device->sas_address;
 473                 device_name = sas_device->device_name;
 474                 enclosure_logical_id = sas_device->enclosure_logical_id;
 475                 slot = sas_device->slot;
 476         } else {
 477                 raid_device = device;
 478                 sas_address = raid_device->wwid;
 479                 device_name = 0;
 480                 enclosure_logical_id = 0;
 481                 slot = 0;
 482         }
 483
 484         if (!ioc->req_boot_device.device) {
 485                 if (_scsih_is_boot_device(sas_address, device_name,
 486                     enclosure_logical_id, slot,
 487                     (ioc->bios_pg2.ReqBootDeviceForm &
 488                     MPI2_BIOSPAGE2_FORM_MASK),
 489                     &ioc->bios_pg2.RequestedBootDevice)) {
 490                         dinitprintk(ioc, pr_info(MPT3SAS_FMT
 491                            "%s: req_boot_device(0x%016llx)\n",
 492                             ioc->name, __func__,
 493                             (unsigned long long)sas_address));
 494                         ioc->req_boot_device.device = device;
 495                         ioc->req_boot_device.is_raid = is_raid;
 496                 }
 497         }
 498
 499         if (!ioc->req_alt_boot_device.device) {
 500                 if (_scsih_is_boot_device(sas_address, device_name,
 501                     enclosure_logical_id, slot,
 502                     (ioc->bios_pg2.ReqAltBootDeviceForm &
 503                     MPI2_BIOSPAGE2_FORM_MASK),
 504                     &ioc->bios_pg2.RequestedAltBootDevice)) {
 505                         dinitprintk(ioc, pr_info(MPT3SAS_FMT
 506                            "%s: req_alt_boot_device(0x%016llx)\n",
 507                             ioc->name, __func__,
 508                             (unsigned long long)sas_address));
 509                         ioc->req_alt_boot_device.device = device;
 510                         ioc->req_alt_boot_device.is_raid = is_raid;
 511                 }
 512         }
 513
 514         if (!ioc->current_boot_device.device) {
 515                 if (_scsih_is_boot_device(sas_address, device_name,
 516                     enclosure_logical_id, slot,
 517                     (ioc->bios_pg2.CurrentBootDeviceForm &
 518                     MPI2_BIOSPAGE2_FORM_MASK),
 519                     &ioc->bios_pg2.CurrentBootDevice)) {
 520                         dinitprintk(ioc, pr_info(MPT3SAS_FMT
 521                            "%s: current_boot_device(0x%016llx)\n",
 522                             ioc->name, __func__,
 523                             (unsigned long long)sas_address));
 524                         ioc->current_boot_device.device = device;
 525                         ioc->current_boot_device.is_raid = is_raid;
 526                 }
 527         }
 528 }
 529
 530 static struct _sas_device *
 531 __mpt3sas_get_sdev_from_target(struct MPT3SAS_ADAPTER *ioc,
 532                 struct MPT3SAS_TARGET *tgt_priv)
 533 {
 534         struct _sas_device *ret;
 535
 536         assert_spin_locked(&ioc->sas_device_lock);
 537
 538         ret = tgt_priv->sdev;
 539         if (ret)
 540                 sas_device_get(ret);
 541
 542         return ret;
 543 }
 544
 545 static struct _sas_device *
 546 mpt3sas_get_sdev_from_target(struct MPT3SAS_ADAPTER *ioc,
 547                 struct MPT3SAS_TARGET *tgt_priv)
 548 {
 549         struct _sas_device *ret;
 550         unsigned long flags;
 551
 552         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 553         ret = __mpt3sas_get_sdev_from_target(ioc, tgt_priv);
 554         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 555
 556         return ret;
 557 }
 558
 559
 560 struct _sas_device *
 561 __mpt3sas_get_sdev_by_addr(struct MPT3SAS_ADAPTER *ioc,
 562                                         u64 sas_address)
 563 {
 564         struct _sas_device *sas_device;
 565
 566         assert_spin_locked(&ioc->sas_device_lock);
 567
 568         list_for_each_entry(sas_device, &ioc->sas_device_list, list)
 569                 if (sas_device->sas_address == sas_address)
 570                         goto found_device;
 571
 572         list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
 573                 if (sas_device->sas_address == sas_address)
 574                         goto found_device;
 575
 576         return NULL;
 577
 578 found_device:
 579         sas_device_get(sas_device);
 580         return sas_device;
 581 }
 582
 583 /**
 584  * mpt3sas_get_sdev_by_addr - sas device search
 585  * @ioc: per adapter object
 586  * @sas_address: sas address
 587  * Context: Calling function should acquire ioc->sas_device_lock
 588  *
 589  * This searches for sas_device based on sas_address, then return sas_device
 590  * object.
 591  */
 592 struct _sas_device *
 593 mpt3sas_get_sdev_by_addr(struct MPT3SAS_ADAPTER *ioc,
 594         u64 sas_address)
 595 {
 596         struct _sas_device *sas_device;
 597         unsigned long flags;
 598
 599         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 600         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
 601                         sas_address);
 602         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 603
 604         return sas_device;
 605 }
 606
 607 static struct _sas_device *
 608 __mpt3sas_get_sdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 609 {
 610         struct _sas_device *sas_device;
 611
 612         assert_spin_locked(&ioc->sas_device_lock);
 613
 614         list_for_each_entry(sas_device, &ioc->sas_device_list, list)
 615                 if (sas_device->handle == handle)
 616                         goto found_device;
 617
 618         list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
 619                 if (sas_device->handle == handle)
 620                         goto found_device;
 621
 622         return NULL;
 623
 624 found_device:
 625         sas_device_get(sas_device);
 626         return sas_device;
 627 }
 628
 629 /**
 630  * mpt3sas_get_sdev_by_handle - sas device search
 631  * @ioc: per adapter object
 632  * @handle: sas device handle (assigned by firmware)
 633  * Context: Calling function should acquire ioc->sas_device_lock
 634  *
 635  * This searches for sas_device based on sas_address, then return sas_device
 636  * object.
 637  */
 638 static struct _sas_device *
 639 mpt3sas_get_sdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 640 {
 641         struct _sas_device *sas_device;
 642         unsigned long flags;
 643
 644         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 645         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
 646         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 647
 648         return sas_device;
 649 }
 650
 651 /**
 652  * _scsih_sas_device_remove - remove sas_device from list.
 653  * @ioc: per adapter object
 654  * @sas_device: the sas_device object
 655  * Context: This function will acquire ioc->sas_device_lock.
 656  *
 657  * If sas_device is on the list, remove it and decrement its reference count.
 658  */
 659 static void
 660 _scsih_sas_device_remove(struct MPT3SAS_ADAPTER *ioc,
 661         struct _sas_device *sas_device)
 662 {
 663         unsigned long flags;
 664
 665         if (!sas_device)
 666                 return;
 667         pr_info(MPT3SAS_FMT
 668             "removing handle(0x%04x), sas_addr(0x%016llx)\n",
 669             ioc->name, sas_device->handle,
 670             (unsigned long long) sas_device->sas_address);
 671
 672         if (sas_device->enclosure_handle != 0)
 673                 pr_info(MPT3SAS_FMT
 674                    "removing enclosure logical id(0x%016llx), slot(%d)\n",
 675                    ioc->name, (unsigned long long)
 676                    sas_device->enclosure_logical_id, sas_device->slot);
 677
 678         if (sas_device->connector_name[0] != '\0')
 679                 pr_info(MPT3SAS_FMT
 680                    "removing enclosure level(0x%04x), connector name( %s)\n",
 681                    ioc->name, sas_device->enclosure_level,
 682                    sas_device->connector_name);
 683
 684         /*
 685          * The lock serializes access to the list, but we still need to verify
 686          * that nobody removed the entry while we were waiting on the lock.
 687          */
 688         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 689         if (!list_empty(&sas_device->list)) {
 690                 list_del_init(&sas_device->list);
 691                 sas_device_put(sas_device);
 692         }
 693         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 694 }
 695
 696 /**
 697  * _scsih_device_remove_by_handle - removing device object by handle
 698  * @ioc: per adapter object
 699  * @handle: device handle
 700  *
 701  * Return nothing.
 702  */
 703 static void
 704 _scsih_device_remove_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 705 {
 706         struct _sas_device *sas_device;
 707         unsigned long flags;
 708
 709         if (ioc->shost_recovery)
 710                 return;
 711
 712         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 713         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
 714         if (sas_device) {
 715                 list_del_init(&sas_device->list);
 716                 sas_device_put(sas_device);
 717         }
 718         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 719         if (sas_device) {
 720                 _scsih_remove_device(ioc, sas_device);
 721                 sas_device_put(sas_device);
 722         }
 723 }
 724
 725 /**
 726  * mpt3sas_device_remove_by_sas_address - removing device object by sas address
 727  * @ioc: per adapter object
 728  * @sas_address: device sas_address
 729  *
 730  * Return nothing.
 731  */
 732 void
 733 mpt3sas_device_remove_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
 734         u64 sas_address)
 735 {
 736         struct _sas_device *sas_device;
 737         unsigned long flags;
 738
 739         if (ioc->shost_recovery)
 740                 return;
 741
 742         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 743         sas_device = __mpt3sas_get_sdev_by_addr(ioc, sas_address);
 744         if (sas_device) {
 745                 list_del_init(&sas_device->list);
 746                 sas_device_put(sas_device);
 747         }
 748         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 749         if (sas_device) {
 750                 _scsih_remove_device(ioc, sas_device);
 751                 sas_device_put(sas_device);
 752         }
 753 }
 754
 755 /**
 756  * _scsih_sas_device_add - insert sas_device to the list.
 757  * @ioc: per adapter object
 758  * @sas_device: the sas_device object
 759  * Context: This function will acquire ioc->sas_device_lock.
 760  *
 761  * Adding new object to the ioc->sas_device_list.
 762  */
 763 static void
 764 _scsih_sas_device_add(struct MPT3SAS_ADAPTER *ioc,
 765         struct _sas_device *sas_device)
 766 {
 767         unsigned long flags;
 768
 769         dewtprintk(ioc, pr_info(MPT3SAS_FMT
 770                 "%s: handle(0x%04x), sas_addr(0x%016llx)\n",
 771                 ioc->name, __func__, sas_device->handle,
 772                 (unsigned long long)sas_device->sas_address));
 773
 774         if (sas_device->enclosure_handle != 0)
 775                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 776                     "%s: enclosure logical id(0x%016llx), slot( %d)\n",
 777                     ioc->name, __func__, (unsigned long long)
 778                     sas_device->enclosure_logical_id, sas_device->slot));
 779
 780         if (sas_device->connector_name[0] != '\0')
 781                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 782                     "%s: enclosure level(0x%04x), connector name( %s)\n",
 783                     ioc->name, __func__,
 784                     sas_device->enclosure_level, sas_device->connector_name));
 785
 786         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 787         sas_device_get(sas_device);
 788         list_add_tail(&sas_device->list, &ioc->sas_device_list);
 789         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 790
 791         if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
 792              sas_device->sas_address_parent)) {
 793                 _scsih_sas_device_remove(ioc, sas_device);
 794         } else if (!sas_device->starget) {
 795                 /*
 796                  * When asyn scanning is enabled, its not possible to remove
 797                  * devices while scanning is turned on due to an oops in
 798                  * scsi_sysfs_add_sdev()->add_device()->sysfs_addrm_start()
 799                  */
 800                 if (!ioc->is_driver_loading) {
 801                         mpt3sas_transport_port_remove(ioc,
 802                             sas_device->sas_address,
 803                             sas_device->sas_address_parent);
 804                         _scsih_sas_device_remove(ioc, sas_device);
 805                 }
 806         }
 807 }
 808
 809 /**
 810  * _scsih_sas_device_init_add - insert sas_device to the list.
 811  * @ioc: per adapter object
 812  * @sas_device: the sas_device object
 813  * Context: This function will acquire ioc->sas_device_lock.
 814  *
 815  * Adding new object at driver load time to the ioc->sas_device_init_list.
 816  */
 817 static void
 818 _scsih_sas_device_init_add(struct MPT3SAS_ADAPTER *ioc,
 819         struct _sas_device *sas_device)
 820 {
 821         unsigned long flags;
 822
 823         dewtprintk(ioc, pr_info(MPT3SAS_FMT
 824                 "%s: handle(0x%04x), sas_addr(0x%016llx)\n", ioc->name,
 825                 __func__, sas_device->handle,
 826                 (unsigned long long)sas_device->sas_address));
 827
 828         if (sas_device->enclosure_handle != 0)
 829                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 830                     "%s: enclosure logical id(0x%016llx), slot( %d)\n",
 831                     ioc->name, __func__, (unsigned long long)
 832                     sas_device->enclosure_logical_id, sas_device->slot));
 833
 834         if (sas_device->connector_name[0] != '\0')
 835                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 836                     "%s: enclosure level(0x%04x), connector name( %s)\n",
 837                     ioc->name, __func__, sas_device->enclosure_level,
 838                     sas_device->connector_name));
 839
 840         spin_lock_irqsave(&ioc->sas_device_lock, flags);
 841         sas_device_get(sas_device);
 842         list_add_tail(&sas_device->list, &ioc->sas_device_init_list);
 843         _scsih_determine_boot_device(ioc, sas_device, 0);
 844         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 845 }
 846
 847 /**
 848  * _scsih_raid_device_find_by_id - raid device search
 849  * @ioc: per adapter object
 850  * @id: sas device target id
 851  * @channel: sas device channel
 852  * Context: Calling function should acquire ioc->raid_device_lock
 853  *
 854  * This searches for raid_device based on target id, then return raid_device
 855  * object.
 856  */
 857 static struct _raid_device *
 858 _scsih_raid_device_find_by_id(struct MPT3SAS_ADAPTER *ioc, int id, int channel)
 859 {
 860         struct _raid_device *raid_device, *r;
 861
 862         r = NULL;
 863         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
 864                 if (raid_device->id == id && raid_device->channel == channel) {
 865                         r = raid_device;
 866                         goto out;
 867                 }
 868         }
 869
 870  out:
 871         return r;
 872 }
 873
 874 /**
 875  * mpt3sas_raid_device_find_by_handle - raid device search
 876  * @ioc: per adapter object
 877  * @handle: sas device handle (assigned by firmware)
 878  * Context: Calling function should acquire ioc->raid_device_lock
 879  *
 880  * This searches for raid_device based on handle, then return raid_device
 881  * object.
 882  */
 883 struct _raid_device *
 884 mpt3sas_raid_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 885 {
 886         struct _raid_device *raid_device, *r;
 887
 888         r = NULL;
 889         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
 890                 if (raid_device->handle != handle)
 891                         continue;
 892                 r = raid_device;
 893                 goto out;
 894         }
 895
 896  out:
 897         return r;
 898 }
 899
 900 /**
 901  * _scsih_raid_device_find_by_wwid - raid device search
 902  * @ioc: per adapter object
 903  * @handle: sas device handle (assigned by firmware)
 904  * Context: Calling function should acquire ioc->raid_device_lock
 905  *
 906  * This searches for raid_device based on wwid, then return raid_device
 907  * object.
 908  */
 909 static struct _raid_device *
 910 _scsih_raid_device_find_by_wwid(struct MPT3SAS_ADAPTER *ioc, u64 wwid)
 911 {
 912         struct _raid_device *raid_device, *r;
 913
 914         r = NULL;
 915         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
 916                 if (raid_device->wwid != wwid)
 917                         continue;
 918                 r = raid_device;
 919                 goto out;
 920         }
 921
 922  out:
 923         return r;
 924 }
 925
 926 /**
 927  * _scsih_raid_device_add - add raid_device object
 928  * @ioc: per adapter object
 929  * @raid_device: raid_device object
 930  *
 931  * This is added to the raid_device_list link list.
 932  */
 933 static void
 934 _scsih_raid_device_add(struct MPT3SAS_ADAPTER *ioc,
 935         struct _raid_device *raid_device)
 936 {
 937         unsigned long flags;
 938
 939         dewtprintk(ioc, pr_info(MPT3SAS_FMT
 940                 "%s: handle(0x%04x), wwid(0x%016llx)\n", ioc->name, __func__,
 941             raid_device->handle, (unsigned long long)raid_device->wwid));
 942
 943         spin_lock_irqsave(&ioc->raid_device_lock, flags);
 944         list_add_tail(&raid_device->list, &ioc->raid_device_list);
 945         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
 946 }
 947
 948 /**
 949  * _scsih_raid_device_remove - delete raid_device object
 950  * @ioc: per adapter object
 951  * @raid_device: raid_device object
 952  *
 953  */
 954 static void
 955 _scsih_raid_device_remove(struct MPT3SAS_ADAPTER *ioc,
 956         struct _raid_device *raid_device)
 957 {
 958         unsigned long flags;
 959
 960         spin_lock_irqsave(&ioc->raid_device_lock, flags);
 961         list_del(&raid_device->list);
 962         kfree(raid_device);
 963         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
 964 }
 965
 966 /**
 967  * mpt3sas_scsih_expander_find_by_handle - expander device search
 968  * @ioc: per adapter object
 969  * @handle: expander handle (assigned by firmware)
 970  * Context: Calling function should acquire ioc->sas_device_lock
 971  *
 972  * This searches for expander device based on handle, then returns the
 973  * sas_node object.
 974  */
 975 struct _sas_node *
 976 mpt3sas_scsih_expander_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 977 {
 978         struct _sas_node *sas_expander, *r;
 979
 980         r = NULL;
 981         list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
 982                 if (sas_expander->handle != handle)
 983                         continue;
 984                 r = sas_expander;
 985                 goto out;
 986         }
 987  out:
 988         return r;
 989 }
 990
 991 /**
 992  * mpt3sas_scsih_expander_find_by_sas_address - expander device search
 993  * @ioc: per adapter object
 994  * @sas_address: sas address
 995  * Context: Calling function should acquire ioc->sas_node_lock.
 996  *
 997  * This searches for expander device based on sas_address, then returns the
 998  * sas_node object.
 999  */
1000 struct _sas_node *
1001 mpt3sas_scsih_expander_find_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
1002         u64 sas_address)
1003 {
1004         struct _sas_node *sas_expander, *r;
1005
1006         r = NULL;
1007         list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
1008                 if (sas_expander->sas_address != sas_address)
1009                         continue;
1010                 r = sas_expander;
1011                 goto out;
1012         }
1013  out:
1014         return r;
1015 }
1016
1017 /**
1018  * _scsih_expander_node_add - insert expander device to the list.
1019  * @ioc: per adapter object
1020  * @sas_expander: the sas_device object
1021  * Context: This function will acquire ioc->sas_node_lock.
1022  *
1023  * Adding new object to the ioc->sas_expander_list.
1024  *
1025  * Return nothing.
1026  */
1027 static void
1028 _scsih_expander_node_add(struct MPT3SAS_ADAPTER *ioc,
1029         struct _sas_node *sas_expander)
1030 {
1031         unsigned long flags;
1032
1033         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1034         list_add_tail(&sas_expander->list, &ioc->sas_expander_list);
1035         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1036 }
1037
1038 /**
1039  * _scsih_is_end_device - determines if device is an end device
1040  * @device_info: bitfield providing information about the device.
1041  * Context: none
1042  *
1043  * Returns 1 if end device.
1044  */
1045 static int
1046 _scsih_is_end_device(u32 device_info)
1047 {
1048         if (device_info & MPI2_SAS_DEVICE_INFO_END_DEVICE &&
1049                 ((device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) |
1050                 (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET) |
1051                 (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)))
1052                 return 1;
1053         else
1054                 return 0;
1055 }
1056
1057 /**
1058  * _scsih_scsi_lookup_get - returns scmd entry
1059  * @ioc: per adapter object
1060  * @smid: system request message index
1061  *
1062  * Returns the smid stored scmd pointer.
1063  */
1064 static struct scsi_cmnd *
1065 _scsih_scsi_lookup_get(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1066 {
1067         return ioc->scsi_lookup[smid - 1].scmd;
1068 }
1069
1070 /**
1071  * _scsih_scsi_lookup_get_clear - returns scmd entry
1072  * @ioc: per adapter object
1073  * @smid: system request message index
1074  *
1075  * Returns the smid stored scmd pointer.
1076  * Then will derefrence the stored scmd pointer.
1077  */
1078 static inline struct scsi_cmnd *
1079 _scsih_scsi_lookup_get_clear(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1080 {
1081         unsigned long flags;
1082         struct scsi_cmnd *scmd;
1083
1084         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1085         scmd = ioc->scsi_lookup[smid - 1].scmd;
1086         ioc->scsi_lookup[smid - 1].scmd = NULL;
1087         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1088
1089         return scmd;
1090 }
1091
1092 /**
1093  * _scsih_scsi_lookup_find_by_scmd - scmd lookup
1094  * @ioc: per adapter object
1095  * @smid: system request message index
1096  * @scmd: pointer to scsi command object
1097  * Context: This function will acquire ioc->scsi_lookup_lock.
1098  *
1099  * This will search for a scmd pointer in the scsi_lookup array,
1100  * returning the revelent smid.  A returned value of zero means invalid.
1101  */
1102 static u16
1103 _scsih_scsi_lookup_find_by_scmd(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd
1104         *scmd)
1105 {
1106         u16 smid;
1107         unsigned long   flags;
1108         int i;
1109
1110         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1111         smid = 0;
1112         for (i = 0; i < ioc->scsiio_depth; i++) {
1113                 if (ioc->scsi_lookup[i].scmd == scmd) {
1114                         smid = ioc->scsi_lookup[i].smid;
1115                         goto out;
1116                 }
1117         }
1118  out:
1119         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1120         return smid;
1121 }
1122
1123 /**
1124  * _scsih_scsi_lookup_find_by_target - search for matching channel:id
1125  * @ioc: per adapter object
1126  * @id: target id
1127  * @channel: channel
1128  * Context: This function will acquire ioc->scsi_lookup_lock.
1129  *
1130  * This will search for a matching channel:id in the scsi_lookup array,
1131  * returning 1 if found.
1132  */
1133 static u8
1134 _scsih_scsi_lookup_find_by_target(struct MPT3SAS_ADAPTER *ioc, int id,
1135         int channel)
1136 {
1137         u8 found;
1138         unsigned long   flags;
1139         int i;
1140
1141         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1142         found = 0;
1143         for (i = 0 ; i < ioc->scsiio_depth; i++) {
1144                 if (ioc->scsi_lookup[i].scmd &&
1145                     (ioc->scsi_lookup[i].scmd->device->id == id &&
1146                     ioc->scsi_lookup[i].scmd->device->channel == channel)) {
1147                         found = 1;
1148                         goto out;
1149                 }
1150         }
1151  out:
1152         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1153         return found;
1154 }
1155
1156 /**
1157  * _scsih_scsi_lookup_find_by_lun - search for matching channel:id:lun
1158  * @ioc: per adapter object
1159  * @id: target id
1160  * @lun: lun number
1161  * @channel: channel
1162  * Context: This function will acquire ioc->scsi_lookup_lock.
1163  *
1164  * This will search for a matching channel:id:lun in the scsi_lookup array,
1165  * returning 1 if found.
1166  */
1167 static u8
1168 _scsih_scsi_lookup_find_by_lun(struct MPT3SAS_ADAPTER *ioc, int id,
1169         unsigned int lun, int channel)
1170 {
1171         u8 found;
1172         unsigned long   flags;
1173         int i;
1174
1175         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1176         found = 0;
1177         for (i = 0 ; i < ioc->scsiio_depth; i++) {
1178                 if (ioc->scsi_lookup[i].scmd &&
1179                     (ioc->scsi_lookup[i].scmd->device->id == id &&
1180                     ioc->scsi_lookup[i].scmd->device->channel == channel &&
1181                     ioc->scsi_lookup[i].scmd->device->lun == lun)) {
1182                         found = 1;
1183                         goto out;
1184                 }
1185         }
1186  out:
1187         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1188         return found;
1189 }
1190
1191 /**
1192  * scsih_change_queue_depth - setting device queue depth
1193  * @sdev: scsi device struct
1194  * @qdepth: requested queue depth
1195  *
1196  * Returns queue depth.
1197  */
1198 static int
1199 scsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
1200 {
1201         struct Scsi_Host *shost = sdev->host;
1202         int max_depth;
1203         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1204         struct MPT3SAS_DEVICE *sas_device_priv_data;
1205         struct MPT3SAS_TARGET *sas_target_priv_data;
1206         struct _sas_device *sas_device;
1207         unsigned long flags;
1208
1209         max_depth = shost->can_queue;
1210
1211         /* limit max device queue for SATA to 32 */
1212         sas_device_priv_data = sdev->hostdata;
1213         if (!sas_device_priv_data)
1214                 goto not_sata;
1215         sas_target_priv_data = sas_device_priv_data->sas_target;
1216         if (!sas_target_priv_data)
1217                 goto not_sata;
1218         if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME))
1219                 goto not_sata;
1220
1221         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1222         sas_device = __mpt3sas_get_sdev_from_target(ioc, sas_target_priv_data);
1223         if (sas_device) {
1224                 if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1225                         max_depth = MPT3SAS_SATA_QUEUE_DEPTH;
1226
1227                 sas_device_put(sas_device);
1228         }
1229         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1230
1231  not_sata:
1232
1233         if (!sdev->tagged_supported)
1234                 max_depth = 1;
1235         if (qdepth > max_depth)
1236                 qdepth = max_depth;
1237         return scsi_change_queue_depth(sdev, qdepth);
1238 }
1239
1240 /**
1241  * scsih_target_alloc - target add routine
1242  * @starget: scsi target struct
1243  *
1244  * Returns 0 if ok. Any other return is assumed to be an error and
1245  * the device is ignored.
1246  */
1247 static int
1248 scsih_target_alloc(struct scsi_target *starget)
1249 {
1250         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1251         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1252         struct MPT3SAS_TARGET *sas_target_priv_data;
1253         struct _sas_device *sas_device;
1254         struct _raid_device *raid_device;
1255         unsigned long flags;
1256         struct sas_rphy *rphy;
1257
1258         sas_target_priv_data = kzalloc(sizeof(*sas_target_priv_data),
1259                                        GFP_KERNEL);
1260         if (!sas_target_priv_data)
1261                 return -ENOMEM;
1262
1263         starget->hostdata = sas_target_priv_data;
1264         sas_target_priv_data->starget = starget;
1265         sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
1266
1267         /* RAID volumes */
1268         if (starget->channel == RAID_CHANNEL) {
1269                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1270                 raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
1271                     starget->channel);
1272                 if (raid_device) {
1273                         sas_target_priv_data->handle = raid_device->handle;
1274                         sas_target_priv_data->sas_address = raid_device->wwid;
1275                         sas_target_priv_data->flags |= MPT_TARGET_FLAGS_VOLUME;
1276                         sas_target_priv_data->raid_device = raid_device;
1277                         if (ioc->is_warpdrive)
1278                                 raid_device->starget = starget;
1279                 }
1280                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1281                 return 0;
1282         }
1283
1284         /* sas/sata devices */
1285         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1286         rphy = dev_to_rphy(starget->dev.parent);
1287         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1288            rphy->identify.sas_address);
1289
1290         if (sas_device) {
1291                 sas_target_priv_data->handle = sas_device->handle;
1292                 sas_target_priv_data->sas_address = sas_device->sas_address;
1293                 sas_target_priv_data->sdev = sas_device;
1294                 sas_device->starget = starget;
1295                 sas_device->id = starget->id;
1296                 sas_device->channel = starget->channel;
1297                 if (test_bit(sas_device->handle, ioc->pd_handles))
1298                         sas_target_priv_data->flags |=
1299                             MPT_TARGET_FLAGS_RAID_COMPONENT;
1300                 if (sas_device->fast_path)
1301                         sas_target_priv_data->flags |= MPT_TARGET_FASTPATH_IO;
1302         }
1303         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1304
1305         return 0;
1306 }
1307
1308 /**
1309  * scsih_target_destroy - target destroy routine
1310  * @starget: scsi target struct
1311  *
1312  * Returns nothing.
1313  */
1314 static void
1315 scsih_target_destroy(struct scsi_target *starget)
1316 {
1317         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1318         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1319         struct MPT3SAS_TARGET *sas_target_priv_data;
1320         struct _sas_device *sas_device;
1321         struct _raid_device *raid_device;
1322         unsigned long flags;
1323
1324         sas_target_priv_data = starget->hostdata;
1325         if (!sas_target_priv_data)
1326                 return;
1327
1328         if (starget->channel == RAID_CHANNEL) {
1329                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1330                 raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
1331                     starget->channel);
1332                 if (raid_device) {
1333                         raid_device->starget = NULL;
1334                         raid_device->sdev = NULL;
1335                 }
1336                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1337                 goto out;
1338         }
1339
1340         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1341         sas_device = __mpt3sas_get_sdev_from_target(ioc, sas_target_priv_data);
1342         if (sas_device && (sas_device->starget == starget) &&
1343             (sas_device->id == starget->id) &&
1344             (sas_device->channel == starget->channel))
1345                 sas_device->starget = NULL;
1346
1347         if (sas_device) {
1348                 /*
1349                  * Corresponding get() is in _scsih_target_alloc()
1350                  */
1351                 sas_target_priv_data->sdev = NULL;
1352                 sas_device_put(sas_device);
1353
1354                 sas_device_put(sas_device);
1355         }
1356         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1357
1358  out:
1359         kfree(sas_target_priv_data);
1360         starget->hostdata = NULL;
1361 }
1362
1363 /**
1364  * scsih_slave_alloc - device add routine
1365  * @sdev: scsi device struct
1366  *
1367  * Returns 0 if ok. Any other return is assumed to be an error and
1368  * the device is ignored.
1369  */
1370 static int
1371 scsih_slave_alloc(struct scsi_device *sdev)
1372 {
1373         struct Scsi_Host *shost;
1374         struct MPT3SAS_ADAPTER *ioc;
1375         struct MPT3SAS_TARGET *sas_target_priv_data;
1376         struct MPT3SAS_DEVICE *sas_device_priv_data;
1377         struct scsi_target *starget;
1378         struct _raid_device *raid_device;
1379         struct _sas_device *sas_device;
1380         unsigned long flags;
1381
1382         sas_device_priv_data = kzalloc(sizeof(*sas_device_priv_data),
1383                                        GFP_KERNEL);
1384         if (!sas_device_priv_data)
1385                 return -ENOMEM;
1386
1387         sas_device_priv_data->lun = sdev->lun;
1388         sas_device_priv_data->flags = MPT_DEVICE_FLAGS_INIT;
1389
1390         starget = scsi_target(sdev);
1391         sas_target_priv_data = starget->hostdata;
1392         sas_target_priv_data->num_luns++;
1393         sas_device_priv_data->sas_target = sas_target_priv_data;
1394         sdev->hostdata = sas_device_priv_data;
1395         if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT))
1396                 sdev->no_uld_attach = 1;
1397
1398         shost = dev_to_shost(&starget->dev);
1399         ioc = shost_priv(shost);
1400         if (starget->channel == RAID_CHANNEL) {
1401                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1402                 raid_device = _scsih_raid_device_find_by_id(ioc,
1403                     starget->id, starget->channel);
1404                 if (raid_device)
1405                         raid_device->sdev = sdev; /* raid is single lun */
1406                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1407         }
1408
1409         if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
1410                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1411                 sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1412                                         sas_target_priv_data->sas_address);
1413                 if (sas_device && (sas_device->starget == NULL)) {
1414                         sdev_printk(KERN_INFO, sdev,
1415                         "%s : sas_device->starget set to starget @ %d\n",
1416                              __func__, __LINE__);
1417                         sas_device->starget = starget;
1418                 }
1419
1420                 if (sas_device)
1421                         sas_device_put(sas_device);
1422
1423                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1424         }
1425
1426         return 0;
1427 }
1428
1429 /**
1430  * scsih_slave_destroy - device destroy routine
1431  * @sdev: scsi device struct
1432  *
1433  * Returns nothing.
1434  */
1435 static void
1436 scsih_slave_destroy(struct scsi_device *sdev)
1437 {
1438         struct MPT3SAS_TARGET *sas_target_priv_data;
1439         struct scsi_target *starget;
1440         struct Scsi_Host *shost;
1441         struct MPT3SAS_ADAPTER *ioc;
1442         struct _sas_device *sas_device;
1443         unsigned long flags;
1444
1445         if (!sdev->hostdata)
1446                 return;
1447
1448         starget = scsi_target(sdev);
1449         sas_target_priv_data = starget->hostdata;
1450         sas_target_priv_data->num_luns--;
1451
1452         shost = dev_to_shost(&starget->dev);
1453         ioc = shost_priv(shost);
1454
1455         if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
1456                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1457                 sas_device = __mpt3sas_get_sdev_from_target(ioc,
1458                                 sas_target_priv_data);
1459                 if (sas_device && !sas_target_priv_data->num_luns)
1460                         sas_device->starget = NULL;
1461
1462                 if (sas_device)
1463                         sas_device_put(sas_device);
1464                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1465         }
1466
1467         kfree(sdev->hostdata);
1468         sdev->hostdata = NULL;
1469 }
1470
1471 /**
1472  * _scsih_display_sata_capabilities - sata capabilities
1473  * @ioc: per adapter object
1474  * @handle: device handle
1475  * @sdev: scsi device struct
1476  */
1477 static void
1478 _scsih_display_sata_capabilities(struct MPT3SAS_ADAPTER *ioc,
1479         u16 handle, struct scsi_device *sdev)
1480 {
1481         Mpi2ConfigReply_t mpi_reply;
1482         Mpi2SasDevicePage0_t sas_device_pg0;
1483         u32 ioc_status;
1484         u16 flags;
1485         u32 device_info;
1486
1487         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
1488             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
1489                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1490                     ioc->name, __FILE__, __LINE__, __func__);
1491                 return;
1492         }
1493
1494         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1495             MPI2_IOCSTATUS_MASK;
1496         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1497                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1498                     ioc->name, __FILE__, __LINE__, __func__);
1499                 return;
1500         }
1501
1502         flags = le16_to_cpu(sas_device_pg0.Flags);
1503         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
1504
1505         sdev_printk(KERN_INFO, sdev,
1506             "atapi(%s), ncq(%s), asyn_notify(%s), smart(%s), fua(%s), "
1507             "sw_preserve(%s)\n",
1508             (device_info & MPI2_SAS_DEVICE_INFO_ATAPI_DEVICE) ? "y" : "n",
1509             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_NCQ_SUPPORTED) ? "y" : "n",
1510             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_ASYNCHRONOUS_NOTIFY) ? "y" :
1511             "n",
1512             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SMART_SUPPORTED) ? "y" : "n",
1513             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_FUA_SUPPORTED) ? "y" : "n",
1514             (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SW_PRESERVE) ? "y" : "n");
1515 }
1516
1517 /*
1518  * raid transport support -
1519  * Enabled for SLES11 and newer, in older kernels the driver will panic when
1520  * unloading the driver followed by a load - I beleive that the subroutine
1521  * raid_class_release() is not cleaning up properly.
1522  */
1523
1524 /**
1525  * scsih_is_raid - return boolean indicating device is raid volume
1526  * @dev the device struct object
1527  */
1528 static int
1529 scsih_is_raid(struct device *dev)
1530 {
1531         struct scsi_device *sdev = to_scsi_device(dev);
1532         struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1533
1534         if (ioc->is_warpdrive)
1535                 return 0;
1536         return (sdev->channel == RAID_CHANNEL) ? 1 : 0;
1537 }
1538
1539 /**
1540  * scsih_get_resync - get raid volume resync percent complete
1541  * @dev the device struct object
1542  */
1543 static void
1544 scsih_get_resync(struct device *dev)
1545 {
1546         struct scsi_device *sdev = to_scsi_device(dev);
1547         struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1548         static struct _raid_device *raid_device;
1549         unsigned long flags;
1550         Mpi2RaidVolPage0_t vol_pg0;
1551         Mpi2ConfigReply_t mpi_reply;
1552         u32 volume_status_flags;
1553         u8 percent_complete;
1554         u16 handle;
1555
1556         percent_complete = 0;
1557         handle = 0;
1558         if (ioc->is_warpdrive)
1559                 goto out;
1560
1561         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1562         raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
1563             sdev->channel);
1564         if (raid_device) {
1565                 handle = raid_device->handle;
1566                 percent_complete = raid_device->percent_complete;
1567         }
1568         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1569
1570         if (!handle)
1571                 goto out;
1572
1573         if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
1574              MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
1575              sizeof(Mpi2RaidVolPage0_t))) {
1576                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1577                     ioc->name, __FILE__, __LINE__, __func__);
1578                 percent_complete = 0;
1579                 goto out;
1580         }
1581
1582         volume_status_flags = le32_to_cpu(vol_pg0.VolumeStatusFlags);
1583         if (!(volume_status_flags &
1584             MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS))
1585                 percent_complete = 0;
1586
1587  out:
1588
1589         switch (ioc->hba_mpi_version_belonged) {
1590         case MPI2_VERSION:
1591                 raid_set_resync(mpt2sas_raid_template, dev, percent_complete);
1592                 break;
1593         case MPI25_VERSION:
1594         case MPI26_VERSION:
1595                 raid_set_resync(mpt3sas_raid_template, dev, percent_complete);
1596                 break;
1597         }
1598 }
1599
1600 /**
1601  * scsih_get_state - get raid volume level
1602  * @dev the device struct object
1603  */
1604 static void
1605 scsih_get_state(struct device *dev)
1606 {
1607         struct scsi_device *sdev = to_scsi_device(dev);
1608         struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1609         static struct _raid_device *raid_device;
1610         unsigned long flags;
1611         Mpi2RaidVolPage0_t vol_pg0;
1612         Mpi2ConfigReply_t mpi_reply;
1613         u32 volstate;
1614         enum raid_state state = RAID_STATE_UNKNOWN;
1615         u16 handle = 0;
1616
1617         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1618         raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
1619             sdev->channel);
1620         if (raid_device)
1621                 handle = raid_device->handle;
1622         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1623
1624         if (!raid_device)
1625                 goto out;
1626
1627         if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
1628              MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
1629              sizeof(Mpi2RaidVolPage0_t))) {
1630                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1631                     ioc->name, __FILE__, __LINE__, __func__);
1632                 goto out;
1633         }
1634
1635         volstate = le32_to_cpu(vol_pg0.VolumeStatusFlags);
1636         if (volstate & MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS) {
1637                 state = RAID_STATE_RESYNCING;
1638                 goto out;
1639         }
1640
1641         switch (vol_pg0.VolumeState) {
1642         case MPI2_RAID_VOL_STATE_OPTIMAL:
1643         case MPI2_RAID_VOL_STATE_ONLINE:
1644                 state = RAID_STATE_ACTIVE;
1645                 break;
1646         case  MPI2_RAID_VOL_STATE_DEGRADED:
1647                 state = RAID_STATE_DEGRADED;
1648                 break;
1649         case MPI2_RAID_VOL_STATE_FAILED:
1650         case MPI2_RAID_VOL_STATE_MISSING:
1651                 state = RAID_STATE_OFFLINE;
1652                 break;
1653         }
1654  out:
1655         switch (ioc->hba_mpi_version_belonged) {
1656         case MPI2_VERSION:
1657                 raid_set_state(mpt2sas_raid_template, dev, state);
1658                 break;
1659         case MPI25_VERSION:
1660         case MPI26_VERSION:
1661                 raid_set_state(mpt3sas_raid_template, dev, state);
1662                 break;
1663         }
1664 }
1665
1666 /**
1667  * _scsih_set_level - set raid level
1668  * @sdev: scsi device struct
1669  * @volume_type: volume type
1670  */
1671 static void
1672 _scsih_set_level(struct MPT3SAS_ADAPTER *ioc,
1673         struct scsi_device *sdev, u8 volume_type)
1674 {
1675         enum raid_level level = RAID_LEVEL_UNKNOWN;
1676
1677         switch (volume_type) {
1678         case MPI2_RAID_VOL_TYPE_RAID0:
1679                 level = RAID_LEVEL_0;
1680                 break;
1681         case MPI2_RAID_VOL_TYPE_RAID10:
1682                 level = RAID_LEVEL_10;
1683                 break;
1684         case MPI2_RAID_VOL_TYPE_RAID1E:
1685                 level = RAID_LEVEL_1E;
1686                 break;
1687         case MPI2_RAID_VOL_TYPE_RAID1:
1688                 level = RAID_LEVEL_1;
1689                 break;
1690         }
1691
1692         switch (ioc->hba_mpi_version_belonged) {
1693         case MPI2_VERSION:
1694                 raid_set_level(mpt2sas_raid_template,
1695                         &sdev->sdev_gendev, level);
1696                 break;
1697         case MPI25_VERSION:
1698         case MPI26_VERSION:
1699                 raid_set_level(mpt3sas_raid_template,
1700                         &sdev->sdev_gendev, level);
1701                 break;
1702         }
1703 }
1704
1705
1706 /**
1707  * _scsih_get_volume_capabilities - volume capabilities
1708  * @ioc: per adapter object
1709  * @sas_device: the raid_device object
1710  *
1711  * Returns 0 for success, else 1
1712  */
1713 static int
1714 _scsih_get_volume_capabilities(struct MPT3SAS_ADAPTER *ioc,
1715         struct _raid_device *raid_device)
1716 {
1717         Mpi2RaidVolPage0_t *vol_pg0;
1718         Mpi2RaidPhysDiskPage0_t pd_pg0;
1719         Mpi2SasDevicePage0_t sas_device_pg0;
1720         Mpi2ConfigReply_t mpi_reply;
1721         u16 sz;
1722         u8 num_pds;
1723
1724         if ((mpt3sas_config_get_number_pds(ioc, raid_device->handle,
1725             &num_pds)) || !num_pds) {
1726                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1727                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1728                     __func__));
1729                 return 1;
1730         }
1731
1732         raid_device->num_pds = num_pds;
1733         sz = offsetof(Mpi2RaidVolPage0_t, PhysDisk) + (num_pds *
1734             sizeof(Mpi2RaidVol0PhysDisk_t));
1735         vol_pg0 = kzalloc(sz, GFP_KERNEL);
1736         if (!vol_pg0) {
1737                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1738                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1739                     __func__));
1740                 return 1;
1741         }
1742
1743         if ((mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, vol_pg0,
1744              MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle, sz))) {
1745                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1746                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1747                     __func__));
1748                 kfree(vol_pg0);
1749                 return 1;
1750         }
1751
1752         raid_device->volume_type = vol_pg0->VolumeType;
1753
1754         /* figure out what the underlying devices are by
1755          * obtaining the device_info bits for the 1st device
1756          */
1757         if (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
1758             &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_PHYSDISKNUM,
1759             vol_pg0->PhysDisk[0].PhysDiskNum))) {
1760                 if (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
1761                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
1762                     le16_to_cpu(pd_pg0.DevHandle)))) {
1763                         raid_device->device_info =
1764                             le32_to_cpu(sas_device_pg0.DeviceInfo);
1765                 }
1766         }
1767
1768         kfree(vol_pg0);
1769         return 0;
1770 }
1771
1772 /**
1773  * _scsih_enable_tlr - setting TLR flags
1774  * @ioc: per adapter object
1775  * @sdev: scsi device struct
1776  *
1777  * Enabling Transaction Layer Retries for tape devices when
1778  * vpd page 0x90 is present
1779  *
1780  */
1781 static void
1782 _scsih_enable_tlr(struct MPT3SAS_ADAPTER *ioc, struct scsi_device *sdev)
1783 {
1784
1785         /* only for TAPE */
1786         if (sdev->type != TYPE_TAPE)
1787                 return;
1788
1789         if (!(ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR))
1790                 return;
1791
1792         sas_enable_tlr(sdev);
1793         sdev_printk(KERN_INFO, sdev, "TLR %s\n",
1794             sas_is_tlr_enabled(sdev) ? "Enabled" : "Disabled");
1795         return;
1796
1797 }
1798
1799 /**
1800  * scsih_slave_configure - device configure routine.
1801  * @sdev: scsi device struct
1802  *
1803  * Returns 0 if ok. Any other return is assumed to be an error and
1804  * the device is ignored.
1805  */
1806 static int
1807 scsih_slave_configure(struct scsi_device *sdev)
1808 {
1809         struct Scsi_Host *shost = sdev->host;
1810         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1811         struct MPT3SAS_DEVICE *sas_device_priv_data;
1812         struct MPT3SAS_TARGET *sas_target_priv_data;
1813         struct _sas_device *sas_device;
1814         struct _raid_device *raid_device;
1815         unsigned long flags;
1816         int qdepth;
1817         u8 ssp_target = 0;
1818         char *ds = "";
1819         char *r_level = "";
1820         u16 handle, volume_handle = 0;
1821         u64 volume_wwid = 0;
1822
1823         qdepth = 1;
1824         sas_device_priv_data = sdev->hostdata;
1825         sas_device_priv_data->configured_lun = 1;
1826         sas_device_priv_data->flags &= ~MPT_DEVICE_FLAGS_INIT;
1827         sas_target_priv_data = sas_device_priv_data->sas_target;
1828         handle = sas_target_priv_data->handle;
1829
1830         /* raid volume handling */
1831         if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME) {
1832
1833                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1834                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
1835                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1836                 if (!raid_device) {
1837                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1838                             "failure at %s:%d/%s()!\n", ioc->name, __FILE__,
1839                             __LINE__, __func__));
1840                         return 1;
1841                 }
1842
1843                 if (_scsih_get_volume_capabilities(ioc, raid_device)) {
1844                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1845                             "failure at %s:%d/%s()!\n", ioc->name, __FILE__,
1846                             __LINE__, __func__));
1847                         return 1;
1848                 }
1849
1850                 /*
1851                  * WARPDRIVE: Initialize the required data for Direct IO
1852                  */
1853                 mpt3sas_init_warpdrive_properties(ioc, raid_device);
1854
1855                 /* RAID Queue Depth Support
1856                  * IS volume = underlying qdepth of drive type, either
1857                  *    MPT3SAS_SAS_QUEUE_DEPTH or MPT3SAS_SATA_QUEUE_DEPTH
1858                  * IM/IME/R10 = 128 (MPT3SAS_RAID_QUEUE_DEPTH)
1859                  */
1860                 if (raid_device->device_info &
1861                     MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
1862                         qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
1863                         ds = "SSP";
1864                 } else {
1865                         qdepth = MPT3SAS_SATA_QUEUE_DEPTH;
1866                          if (raid_device->device_info &
1867                             MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1868                                 ds = "SATA";
1869                         else
1870                                 ds = "STP";
1871                 }
1872
1873                 switch (raid_device->volume_type) {
1874                 case MPI2_RAID_VOL_TYPE_RAID0:
1875                         r_level = "RAID0";
1876                         break;
1877                 case MPI2_RAID_VOL_TYPE_RAID1E:
1878                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1879                         if (ioc->manu_pg10.OEMIdentifier &&
1880                             (le32_to_cpu(ioc->manu_pg10.GenericFlags0) &
1881                             MFG10_GF0_R10_DISPLAY) &&
1882                             !(raid_device->num_pds % 2))
1883                                 r_level = "RAID10";
1884                         else
1885                                 r_level = "RAID1E";
1886                         break;
1887                 case MPI2_RAID_VOL_TYPE_RAID1:
1888                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1889                         r_level = "RAID1";
1890                         break;
1891                 case MPI2_RAID_VOL_TYPE_RAID10:
1892                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1893                         r_level = "RAID10";
1894                         break;
1895                 case MPI2_RAID_VOL_TYPE_UNKNOWN:
1896                 default:
1897                         qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1898                         r_level = "RAIDX";
1899                         break;
1900                 }
1901
1902                 if (!ioc->hide_ir_msg)
1903                         sdev_printk(KERN_INFO, sdev,
1904                            "%s: handle(0x%04x), wwid(0x%016llx),"
1905                             " pd_count(%d), type(%s)\n",
1906                             r_level, raid_device->handle,
1907                             (unsigned long long)raid_device->wwid,
1908                             raid_device->num_pds, ds);
1909
1910                 if (shost->max_sectors > MPT3SAS_RAID_MAX_SECTORS) {
1911                         blk_queue_max_hw_sectors(sdev->request_queue,
1912                                                 MPT3SAS_RAID_MAX_SECTORS);
1913                         sdev_printk(KERN_INFO, sdev,
1914                                         "Set queue's max_sector to: %u\n",
1915                                                 MPT3SAS_RAID_MAX_SECTORS);
1916                 }
1917
1918                 scsih_change_queue_depth(sdev, qdepth);
1919
1920                 /* raid transport support */
1921                 if (!ioc->is_warpdrive)
1922                         _scsih_set_level(ioc, sdev, raid_device->volume_type);
1923                 return 0;
1924         }
1925
1926         /* non-raid handling */
1927         if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1928                 if (mpt3sas_config_get_volume_handle(ioc, handle,
1929                     &volume_handle)) {
1930                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1931                             "failure at %s:%d/%s()!\n", ioc->name,
1932                             __FILE__, __LINE__, __func__));
1933                         return 1;
1934                 }
1935                 if (volume_handle && mpt3sas_config_get_volume_wwid(ioc,
1936                     volume_handle, &volume_wwid)) {
1937                         dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1938                             "failure at %s:%d/%s()!\n", ioc->name,
1939                             __FILE__, __LINE__, __func__));
1940                         return 1;
1941                 }
1942         }
1943
1944         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1945         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1946            sas_device_priv_data->sas_target->sas_address);
1947         if (!sas_device) {
1948                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1949                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1950                     "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1951                     __func__));
1952                 return 1;
1953         }
1954
1955         sas_device->volume_handle = volume_handle;
1956         sas_device->volume_wwid = volume_wwid;
1957         if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
1958                 qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
1959                 ssp_target = 1;
1960                 if (sas_device->device_info &
1961                                 MPI2_SAS_DEVICE_INFO_SEP) {
1962                         sdev_printk(KERN_WARNING, sdev,
1963                         "set ignore_delay_remove for handle(0x%04x)\n",
1964                         sas_device_priv_data->sas_target->handle);
1965                         sas_device_priv_data->ignore_delay_remove = 1;
1966                         ds = "SES";
1967                 } else
1968                         ds = "SSP";
1969         } else {
1970                 qdepth = MPT3SAS_SATA_QUEUE_DEPTH;
1971                 if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
1972                         ds = "STP";
1973                 else if (sas_device->device_info &
1974                     MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1975                         ds = "SATA";
1976         }
1977
1978         sdev_printk(KERN_INFO, sdev, "%s: handle(0x%04x), " \
1979             "sas_addr(0x%016llx), phy(%d), device_name(0x%016llx)\n",
1980             ds, handle, (unsigned long long)sas_device->sas_address,
1981             sas_device->phy, (unsigned long long)sas_device->device_name);
1982         if (sas_device->enclosure_handle != 0)
1983                 sdev_printk(KERN_INFO, sdev,
1984                      "%s: enclosure_logical_id(0x%016llx), slot(%d)\n",
1985                      ds, (unsigned long long)
1986                      sas_device->enclosure_logical_id, sas_device->slot);
1987         if (sas_device->connector_name[0] != '\0')
1988                 sdev_printk(KERN_INFO, sdev,
1989                      "%s: enclosure level(0x%04x), connector name( %s)\n",
1990                      ds, sas_device->enclosure_level,
1991                      sas_device->connector_name);
1992
1993         sas_device_put(sas_device);
1994         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1995
1996         if (!ssp_target)
1997                 _scsih_display_sata_capabilities(ioc, handle, sdev);
1998
1999
2000         scsih_change_queue_depth(sdev, qdepth);
2001
2002         if (ssp_target) {
2003                 sas_read_port_mode_page(sdev);
2004                 _scsih_enable_tlr(ioc, sdev);
2005         }
2006
2007         return 0;
2008 }
2009
2010 /**
2011  * scsih_bios_param - fetch head, sector, cylinder info for a disk
2012  * @sdev: scsi device struct
2013  * @bdev: pointer to block device context
2014  * @capacity: device size (in 512 byte sectors)
2015  * @params: three element array to place output:
2016  *              params[0] number of heads (max 255)
2017  *              params[1] number of sectors (max 63)
2018  *              params[2] number of cylinders
2019  *
2020  * Return nothing.
2021  */
2022 static int
2023 scsih_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2024         sector_t capacity, int params[])
2025 {
2026         int             heads;
2027         int             sectors;
2028         sector_t        cylinders;
2029         ulong           dummy;
2030
2031         heads = 64;
2032         sectors = 32;
2033
2034         dummy = heads * sectors;
2035         cylinders = capacity;
2036         sector_div(cylinders, dummy);
2037
2038         /*
2039          * Handle extended translation size for logical drives
2040          * > 1Gb
2041          */
2042         if ((ulong)capacity >= 0x200000) {
2043                 heads = 255;
2044                 sectors = 63;
2045                 dummy = heads * sectors;
2046                 cylinders = capacity;
2047                 sector_div(cylinders, dummy);
2048         }
2049
2050         /* return result */
2051         params[0] = heads;
2052         params[1] = sectors;
2053         params[2] = cylinders;
2054
2055         return 0;
2056 }
2057
2058 /**
2059  * _scsih_response_code - translation of device response code
2060  * @ioc: per adapter object
2061  * @response_code: response code returned by the device
2062  *
2063  * Return nothing.
2064  */
2065 static void
2066 _scsih_response_code(struct MPT3SAS_ADAPTER *ioc, u8 response_code)
2067 {
2068         char *desc;
2069
2070         switch (response_code) {
2071         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
2072                 desc = "task management request completed";
2073                 break;
2074         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
2075                 desc = "invalid frame";
2076                 break;
2077         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2078                 desc = "task management request not supported";
2079                 break;
2080         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
2081                 desc = "task management request failed";
2082                 break;
2083         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2084                 desc = "task management request succeeded";
2085                 break;
2086         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2087                 desc = "invalid lun";
2088                 break;
2089         case 0xA:
2090                 desc = "overlapped tag attempted";
2091                 break;
2092         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2093                 desc = "task queued, however not sent to target";
2094                 break;
2095         default:
2096                 desc = "unknown";
2097                 break;
2098         }
2099         pr_warn(MPT3SAS_FMT "response_code(0x%01x): %s\n",
2100                 ioc->name, response_code, desc);
2101 }
2102
2103 /**
2104  * _scsih_tm_done - tm completion routine
2105  * @ioc: per adapter object
2106  * @smid: system request message index
2107  * @msix_index: MSIX table index supplied by the OS
2108  * @reply: reply message frame(lower 32bit addr)
2109  * Context: none.
2110  *
2111  * The callback handler when using scsih_issue_tm.
2112  *
2113  * Return 1 meaning mf should be freed from _base_interrupt
2114  *        0 means the mf is freed from this function.
2115  */
2116 static u8
2117 _scsih_tm_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
2118 {
2119         MPI2DefaultReply_t *mpi_reply;
2120
2121         if (ioc->tm_cmds.status == MPT3_CMD_NOT_USED)
2122                 return 1;
2123         if (ioc->tm_cmds.smid != smid)
2124                 return 1;
2125         ioc->tm_cmds.status |= MPT3_CMD_COMPLETE;
2126         mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
2127         if (mpi_reply) {
2128                 memcpy(ioc->tm_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
2129                 ioc->tm_cmds.status |= MPT3_CMD_REPLY_VALID;
2130         }
2131         ioc->tm_cmds.status &= ~MPT3_CMD_PENDING;
2132         complete(&ioc->tm_cmds.done);
2133         return 1;
2134 }
2135
2136 /**
2137  * mpt3sas_scsih_set_tm_flag - set per target tm_busy
2138  * @ioc: per adapter object
2139  * @handle: device handle
2140  *
2141  * During taskmangement request, we need to freeze the device queue.
2142  */
2143 void
2144 mpt3sas_scsih_set_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2145 {
2146         struct MPT3SAS_DEVICE *sas_device_priv_data;
2147         struct scsi_device *sdev;
2148         u8 skip = 0;
2149
2150         shost_for_each_device(sdev, ioc->shost) {
2151                 if (skip)
2152                         continue;
2153                 sas_device_priv_data = sdev->hostdata;
2154                 if (!sas_device_priv_data)
2155                         continue;
2156                 if (sas_device_priv_data->sas_target->handle == handle) {
2157                         sas_device_priv_data->sas_target->tm_busy = 1;
2158                         skip = 1;
2159                         ioc->ignore_loginfos = 1;
2160                 }
2161         }
2162 }
2163
2164 /**
2165  * mpt3sas_scsih_clear_tm_flag - clear per target tm_busy
2166  * @ioc: per adapter object
2167  * @handle: device handle
2168  *
2169  * During taskmangement request, we need to freeze the device queue.
2170  */
2171 void
2172 mpt3sas_scsih_clear_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2173 {
2174         struct MPT3SAS_DEVICE *sas_device_priv_data;
2175         struct scsi_device *sdev;
2176         u8 skip = 0;
2177
2178         shost_for_each_device(sdev, ioc->shost) {
2179                 if (skip)
2180                         continue;
2181                 sas_device_priv_data = sdev->hostdata;
2182                 if (!sas_device_priv_data)
2183                         continue;
2184                 if (sas_device_priv_data->sas_target->handle == handle) {
2185                         sas_device_priv_data->sas_target->tm_busy = 0;
2186                         skip = 1;
2187                         ioc->ignore_loginfos = 0;
2188                 }
2189         }
2190 }
2191
2192 /**
2193  * mpt3sas_scsih_issue_tm - main routine for sending tm requests
2194  * @ioc: per adapter struct
2195  * @device_handle: device handle
2196  * @channel: the channel assigned by the OS
2197  * @id: the id assigned by the OS
2198  * @lun: lun number
2199  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in mpi2_init.h)
2200  * @smid_task: smid assigned to the task
2201  * @timeout: timeout in seconds
2202  * Context: user
2203  *
2204  * A generic API for sending task management requests to firmware.
2205  *
2206  * The callback index is set inside `ioc->tm_cb_idx`.
2207  *
2208  * Return SUCCESS or FAILED.
2209  */
2210 int
2211 mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel,
2212         uint id, uint lun, u8 type, u16 smid_task, ulong timeout)
2213 {
2214         Mpi2SCSITaskManagementRequest_t *mpi_request;
2215         Mpi2SCSITaskManagementReply_t *mpi_reply;
2216         u16 smid = 0;
2217         u32 ioc_state;
2218         struct scsiio_tracker *scsi_lookup = NULL;
2219         int rc;
2220         u16 msix_task = 0;
2221
2222         lockdep_assert_held(&ioc->tm_cmds.mutex);
2223
2224         if (ioc->tm_cmds.status != MPT3_CMD_NOT_USED) {
2225                 pr_info(MPT3SAS_FMT "%s: tm_cmd busy!!!\n",
2226                     __func__, ioc->name);
2227                 return FAILED;
2228         }
2229
2230         if (ioc->shost_recovery || ioc->remove_host ||
2231             ioc->pci_error_recovery) {
2232                 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
2233                     __func__, ioc->name);
2234                 return FAILED;
2235         }
2236
2237         ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
2238         if (ioc_state & MPI2_DOORBELL_USED) {
2239                 dhsprintk(ioc, pr_info(MPT3SAS_FMT
2240                         "unexpected doorbell active!\n", ioc->name));
2241                 rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2242                 return (!rc) ? SUCCESS : FAILED;
2243         }
2244
2245         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
2246                 mpt3sas_base_fault_info(ioc, ioc_state &
2247                     MPI2_DOORBELL_DATA_MASK);
2248                 rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2249                 return (!rc) ? SUCCESS : FAILED;
2250         }
2251
2252         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_cb_idx);
2253         if (!smid) {
2254                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
2255                     ioc->name, __func__);
2256                 return FAILED;
2257         }
2258
2259         if (type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
2260                 scsi_lookup = &ioc->scsi_lookup[smid_task - 1];
2261
2262         dtmprintk(ioc, pr_info(MPT3SAS_FMT
2263                 "sending tm: handle(0x%04x), task_type(0x%02x), smid(%d)\n",
2264                 ioc->name, handle, type, smid_task));
2265         ioc->tm_cmds.status = MPT3_CMD_PENDING;
2266         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2267         ioc->tm_cmds.smid = smid;
2268         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
2269         memset(ioc->tm_cmds.reply, 0, sizeof(Mpi2SCSITaskManagementReply_t));
2270         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
2271         mpi_request->DevHandle = cpu_to_le16(handle);
2272         mpi_request->TaskType = type;
2273         mpi_request->TaskMID = cpu_to_le16(smid_task);
2274         int_to_scsilun(lun, (struct scsi_lun *)mpi_request->LUN);
2275         mpt3sas_scsih_set_tm_flag(ioc, handle);
2276         init_completion(&ioc->tm_cmds.done);
2277         if ((type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) &&
2278                         (scsi_lookup->msix_io < ioc->reply_queue_count))
2279                 msix_task = scsi_lookup->msix_io;
2280         else
2281                 msix_task = 0;
2282         mpt3sas_base_put_smid_hi_priority(ioc, smid, msix_task);
2283         wait_for_completion_timeout(&ioc->tm_cmds.done, timeout*HZ);
2284         if (!(ioc->tm_cmds.status & MPT3_CMD_COMPLETE)) {
2285                 pr_err(MPT3SAS_FMT "%s: timeout\n",
2286                     ioc->name, __func__);
2287                 _debug_dump_mf(mpi_request,
2288                     sizeof(Mpi2SCSITaskManagementRequest_t)/4);
2289                 if (!(ioc->tm_cmds.status & MPT3_CMD_RESET)) {
2290                         rc = mpt3sas_base_hard_reset_handler(ioc,
2291                                         FORCE_BIG_HAMMER);
2292                         rc = (!rc) ? SUCCESS : FAILED;
2293                         goto out;
2294                 }
2295         }
2296
2297         /* sync IRQs in case those were busy during flush. */
2298         mpt3sas_base_sync_reply_irqs(ioc);
2299
2300         if (ioc->tm_cmds.status & MPT3_CMD_REPLY_VALID) {
2301                 mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
2302                 mpi_reply = ioc->tm_cmds.reply;
2303                 dtmprintk(ioc, pr_info(MPT3SAS_FMT "complete tm: " \
2304                     "ioc_status(0x%04x), loginfo(0x%08x), term_count(0x%08x)\n",
2305                     ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
2306                     le32_to_cpu(mpi_reply->IOCLogInfo),
2307                     le32_to_cpu(mpi_reply->TerminationCount)));
2308                 if (ioc->logging_level & MPT_DEBUG_TM) {
2309                         _scsih_response_code(ioc, mpi_reply->ResponseCode);
2310                         if (mpi_reply->IOCStatus)
2311                                 _debug_dump_mf(mpi_request,
2312                                     sizeof(Mpi2SCSITaskManagementRequest_t)/4);
2313                 }
2314         }
2315
2316         switch (type) {
2317         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
2318                 rc = SUCCESS;
2319                 if (scsi_lookup->scmd == NULL)
2320                         break;
2321                 rc = FAILED;
2322                 break;
2323
2324         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
2325                 if (_scsih_scsi_lookup_find_by_target(ioc, id, channel))
2326                         rc = FAILED;
2327                 else
2328                         rc = SUCCESS;
2329                 break;
2330         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
2331         case MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
2332                 if (_scsih_scsi_lookup_find_by_lun(ioc, id, lun, channel))
2333                         rc = FAILED;
2334                 else
2335                         rc = SUCCESS;
2336                 break;
2337         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
2338                 rc = SUCCESS;
2339                 break;
2340         default:
2341                 rc = FAILED;
2342                 break;
2343         }
2344
2345 out:
2346         mpt3sas_scsih_clear_tm_flag(ioc, handle);
2347         ioc->tm_cmds.status = MPT3_CMD_NOT_USED;
2348         return rc;
2349 }
2350
2351 int mpt3sas_scsih_issue_locked_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle,
2352         uint channel, uint id, uint lun, u8 type, u16 smid_task, ulong timeout)
2353 {
2354         int ret;
2355
2356         mutex_lock(&ioc->tm_cmds.mutex);
2357         ret = mpt3sas_scsih_issue_tm(ioc, handle, channel, id, lun, type,
2358                         smid_task, timeout);
2359         mutex_unlock(&ioc->tm_cmds.mutex);
2360
2361         return ret;
2362 }
2363
2364 /**
2365  * _scsih_tm_display_info - displays info about the device
2366  * @ioc: per adapter struct
2367  * @scmd: pointer to scsi command object
2368  *
2369  * Called by task management callback handlers.
2370  */
2371 static void
2372 _scsih_tm_display_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd)
2373 {
2374         struct scsi_target *starget = scmd->device->sdev_target;
2375         struct MPT3SAS_TARGET *priv_target = starget->hostdata;
2376         struct _sas_device *sas_device = NULL;
2377         unsigned long flags;
2378         char *device_str = NULL;
2379
2380         if (!priv_target)
2381                 return;
2382         if (ioc->hide_ir_msg)
2383                 device_str = "WarpDrive";
2384         else
2385                 device_str = "volume";
2386
2387         scsi_print_command(scmd);
2388         if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2389                 starget_printk(KERN_INFO, starget,
2390                         "%s handle(0x%04x), %s wwid(0x%016llx)\n",
2391                         device_str, priv_target->handle,
2392                     device_str, (unsigned long long)priv_target->sas_address);
2393         } else {
2394                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
2395                 sas_device = __mpt3sas_get_sdev_from_target(ioc, priv_target);
2396                 if (sas_device) {
2397                         if (priv_target->flags &
2398                             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2399                                 starget_printk(KERN_INFO, starget,
2400                                     "volume handle(0x%04x), "
2401                                     "volume wwid(0x%016llx)\n",
2402                                     sas_device->volume_handle,
2403                                    (unsigned long long)sas_device->volume_wwid);
2404                         }
2405                         starget_printk(KERN_INFO, starget,
2406                             "handle(0x%04x), sas_address(0x%016llx), phy(%d)\n",
2407                             sas_device->handle,
2408                             (unsigned long long)sas_device->sas_address,
2409                             sas_device->phy);
2410                         if (sas_device->enclosure_handle != 0)
2411                                 starget_printk(KERN_INFO, starget,
2412                                  "enclosure_logical_id(0x%016llx), slot(%d)\n",
2413                                  (unsigned long long)
2414                                  sas_device->enclosure_logical_id,
2415                                  sas_device->slot);
2416                         if (sas_device->connector_name[0] != '\0')
2417                                 starget_printk(KERN_INFO, starget,
2418                                 "enclosure level(0x%04x),connector name(%s)\n",
2419                                  sas_device->enclosure_level,
2420                                  sas_device->connector_name);
2421
2422                         sas_device_put(sas_device);
2423                 }
2424                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
2425         }
2426 }
2427
2428 /**
2429  * scsih_abort - eh threads main abort routine
2430  * @scmd: pointer to scsi command object
2431  *
2432  * Returns SUCCESS if command aborted else FAILED
2433  */
2434 static int
2435 scsih_abort(struct scsi_cmnd *scmd)
2436 {
2437         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2438         struct MPT3SAS_DEVICE *sas_device_priv_data;
2439         u16 smid;
2440         u16 handle;
2441         int r;
2442
2443         sdev_printk(KERN_INFO, scmd->device,
2444                 "attempting task abort! scmd(%p)\n", scmd);
2445         _scsih_tm_display_info(ioc, scmd);
2446
2447         sas_device_priv_data = scmd->device->hostdata;
2448         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2449                 sdev_printk(KERN_INFO, scmd->device,
2450                         "device been deleted! scmd(%p)\n", scmd);
2451                 scmd->result = DID_NO_CONNECT << 16;
2452                 scmd->scsi_done(scmd);
2453                 r = SUCCESS;
2454                 goto out;
2455         }
2456
2457         /* search for the command */
2458         smid = _scsih_scsi_lookup_find_by_scmd(ioc, scmd);
2459         if (!smid) {
2460                 scmd->result = DID_RESET << 16;
2461                 r = SUCCESS;
2462                 goto out;
2463         }
2464
2465         /* for hidden raid components and volumes this is not supported */
2466         if (sas_device_priv_data->sas_target->flags &
2467             MPT_TARGET_FLAGS_RAID_COMPONENT ||
2468             sas_device_priv_data->sas_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2469                 scmd->result = DID_RESET << 16;
2470                 r = FAILED;
2471                 goto out;
2472         }
2473
2474         mpt3sas_halt_firmware(ioc);
2475
2476         handle = sas_device_priv_data->sas_target->handle;
2477         r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2478             scmd->device->id, scmd->device->lun,
2479             MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid, 30);
2480
2481  out:
2482         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
2483             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2484         return r;
2485 }
2486
2487 /**
2488  * scsih_dev_reset - eh threads main device reset routine
2489  * @scmd: pointer to scsi command object
2490  *
2491  * Returns SUCCESS if command aborted else FAILED
2492  */
2493 static int
2494 scsih_dev_reset(struct scsi_cmnd *scmd)
2495 {
2496         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2497         struct MPT3SAS_DEVICE *sas_device_priv_data;
2498         struct _sas_device *sas_device = NULL;
2499         u16     handle;
2500         int r;
2501
2502         struct scsi_target *starget = scmd->device->sdev_target;
2503         struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2504
2505         sdev_printk(KERN_INFO, scmd->device,
2506                 "attempting device reset! scmd(%p)\n", scmd);
2507         _scsih_tm_display_info(ioc, scmd);
2508
2509         sas_device_priv_data = scmd->device->hostdata;
2510         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2511                 sdev_printk(KERN_INFO, scmd->device,
2512                         "device been deleted! scmd(%p)\n", scmd);
2513                 scmd->result = DID_NO_CONNECT << 16;
2514                 scmd->scsi_done(scmd);
2515                 r = SUCCESS;
2516                 goto out;
2517         }
2518
2519         /* for hidden raid components obtain the volume_handle */
2520         handle = 0;
2521         if (sas_device_priv_data->sas_target->flags &
2522             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2523                 sas_device = mpt3sas_get_sdev_from_target(ioc,
2524                                 target_priv_data);
2525                 if (sas_device)
2526                         handle = sas_device->volume_handle;
2527         } else
2528                 handle = sas_device_priv_data->sas_target->handle;
2529
2530         if (!handle) {
2531                 scmd->result = DID_RESET << 16;
2532                 r = FAILED;
2533                 goto out;
2534         }
2535
2536         r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2537             scmd->device->id, scmd->device->lun,
2538             MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 30);
2539
2540  out:
2541         sdev_printk(KERN_INFO, scmd->device, "device reset: %s scmd(%p)\n",
2542             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2543
2544         if (sas_device)
2545                 sas_device_put(sas_device);
2546
2547         return r;
2548 }
2549
2550 /**
2551  * scsih_target_reset - eh threads main target reset routine
2552  * @scmd: pointer to scsi command object
2553  *
2554  * Returns SUCCESS if command aborted else FAILED
2555  */
2556 static int
2557 scsih_target_reset(struct scsi_cmnd *scmd)
2558 {
2559         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2560         struct MPT3SAS_DEVICE *sas_device_priv_data;
2561         struct _sas_device *sas_device = NULL;
2562         u16     handle;
2563         int r;
2564         struct scsi_target *starget = scmd->device->sdev_target;
2565         struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2566
2567         starget_printk(KERN_INFO, starget, "attempting target reset! scmd(%p)\n",
2568                 scmd);
2569         _scsih_tm_display_info(ioc, scmd);
2570
2571         sas_device_priv_data = scmd->device->hostdata;
2572         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2573                 starget_printk(KERN_INFO, starget, "target been deleted! scmd(%p)\n",
2574                         scmd);
2575                 scmd->result = DID_NO_CONNECT << 16;
2576                 scmd->scsi_done(scmd);
2577                 r = SUCCESS;
2578                 goto out;
2579         }
2580
2581         /* for hidden raid components obtain the volume_handle */
2582         handle = 0;
2583         if (sas_device_priv_data->sas_target->flags &
2584             MPT_TARGET_FLAGS_RAID_COMPONENT) {
2585                 sas_device = mpt3sas_get_sdev_from_target(ioc,
2586                                 target_priv_data);
2587                 if (sas_device)
2588                         handle = sas_device->volume_handle;
2589         } else
2590                 handle = sas_device_priv_data->sas_target->handle;
2591
2592         if (!handle) {
2593                 scmd->result = DID_RESET << 16;
2594                 r = FAILED;
2595                 goto out;
2596         }
2597
2598         r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2599             scmd->device->id, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
2600             30);
2601
2602  out:
2603         starget_printk(KERN_INFO, starget, "target reset: %s scmd(%p)\n",
2604             ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2605
2606         if (sas_device)
2607                 sas_device_put(sas_device);
2608
2609         return r;
2610 }
2611
2612
2613 /**
2614  * scsih_host_reset - eh threads main host reset routine
2615  * @scmd: pointer to scsi command object
2616  *
2617  * Returns SUCCESS if command aborted else FAILED
2618  */
2619 static int
2620 scsih_host_reset(struct scsi_cmnd *scmd)
2621 {
2622         struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2623         int r, retval;
2624
2625         pr_info(MPT3SAS_FMT "attempting host reset! scmd(%p)\n",
2626             ioc->name, scmd);
2627         scsi_print_command(scmd);
2628
2629         if (ioc->is_driver_loading) {
2630                 pr_info(MPT3SAS_FMT "Blocking the host reset\n",
2631                     ioc->name);
2632                 r = FAILED;
2633                 goto out;
2634         }
2635
2636         retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2637         r = (retval < 0) ? FAILED : SUCCESS;
2638 out:
2639         pr_info(MPT3SAS_FMT "host reset: %s scmd(%p)\n",
2640             ioc->name, ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2641
2642         return r;
2643 }
2644
2645 /**
2646  * _scsih_fw_event_add - insert and queue up fw_event
2647  * @ioc: per adapter object
2648  * @fw_event: object describing the event
2649  * Context: This function will acquire ioc->fw_event_lock.
2650  *
2651  * This adds the firmware event object into link list, then queues it up to
2652  * be processed from user context.
2653  *
2654  * Return nothing.
2655  */
2656 static void
2657 _scsih_fw_event_add(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
2658 {
2659         unsigned long flags;
2660
2661         if (ioc->firmware_event_thread == NULL)
2662                 return;
2663
2664         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2665         fw_event_work_get(fw_event);
2666         INIT_LIST_HEAD(&fw_event->list);
2667         list_add_tail(&fw_event->list, &ioc->fw_event_list);
2668         INIT_WORK(&fw_event->work, _firmware_event_work);
2669         fw_event_work_get(fw_event);
2670         queue_work(ioc->firmware_event_thread, &fw_event->work);
2671         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2672 }
2673
2674 /**
2675  * _scsih_fw_event_del_from_list - delete fw_event from the list
2676  * @ioc: per adapter object
2677  * @fw_event: object describing the event
2678  * Context: This function will acquire ioc->fw_event_lock.
2679  *
2680  * If the fw_event is on the fw_event_list, remove it and do a put.
2681  *
2682  * Return nothing.
2683  */
2684 static void
2685 _scsih_fw_event_del_from_list(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work
2686         *fw_event)
2687 {
2688         unsigned long flags;
2689
2690         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2691         if (!list_empty(&fw_event->list)) {
2692                 list_del_init(&fw_event->list);
2693                 fw_event_work_put(fw_event);
2694         }
2695         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2696 }
2697
2698
2699  /**
2700  * mpt3sas_send_trigger_data_event - send event for processing trigger data
2701  * @ioc: per adapter object
2702  * @event_data: trigger event data
2703  *
2704  * Return nothing.
2705  */
2706 void
2707 mpt3sas_send_trigger_data_event(struct MPT3SAS_ADAPTER *ioc,
2708         struct SL_WH_TRIGGERS_EVENT_DATA_T *event_data)
2709 {
2710         struct fw_event_work *fw_event;
2711         u16 sz;
2712
2713         if (ioc->is_driver_loading)
2714                 return;
2715         sz = sizeof(*event_data);
2716         fw_event = alloc_fw_event_work(sz);
2717         if (!fw_event)
2718                 return;
2719         fw_event->event = MPT3SAS_PROCESS_TRIGGER_DIAG;
2720         fw_event->ioc = ioc;
2721         memcpy(fw_event->event_data, event_data, sizeof(*event_data));
2722         _scsih_fw_event_add(ioc, fw_event);
2723         fw_event_work_put(fw_event);
2724 }
2725
2726 /**
2727  * _scsih_error_recovery_delete_devices - remove devices not responding
2728  * @ioc: per adapter object
2729  *
2730  * Return nothing.
2731  */
2732 static void
2733 _scsih_error_recovery_delete_devices(struct MPT3SAS_ADAPTER *ioc)
2734 {
2735         struct fw_event_work *fw_event;
2736
2737         if (ioc->is_driver_loading)
2738                 return;
2739         fw_event = alloc_fw_event_work(0);
2740         if (!fw_event)
2741                 return;
2742         fw_event->event = MPT3SAS_REMOVE_UNRESPONDING_DEVICES;
2743         fw_event->ioc = ioc;
2744         _scsih_fw_event_add(ioc, fw_event);
2745         fw_event_work_put(fw_event);
2746 }
2747
2748 /**
2749  * mpt3sas_port_enable_complete - port enable completed (fake event)
2750  * @ioc: per adapter object
2751  *
2752  * Return nothing.
2753  */
2754 void
2755 mpt3sas_port_enable_complete(struct MPT3SAS_ADAPTER *ioc)
2756 {
2757         struct fw_event_work *fw_event;
2758
2759         fw_event = alloc_fw_event_work(0);
2760         if (!fw_event)
2761                 return;
2762         fw_event->event = MPT3SAS_PORT_ENABLE_COMPLETE;
2763         fw_event->ioc = ioc;
2764         _scsih_fw_event_add(ioc, fw_event);
2765         fw_event_work_put(fw_event);
2766 }
2767
2768 static struct fw_event_work *dequeue_next_fw_event(struct MPT3SAS_ADAPTER *ioc)
2769 {
2770         unsigned long flags;
2771         struct fw_event_work *fw_event = NULL;
2772
2773         spin_lock_irqsave(&ioc->fw_event_lock, flags);
2774         if (!list_empty(&ioc->fw_event_list)) {
2775                 fw_event = list_first_entry(&ioc->fw_event_list,
2776                                 struct fw_event_work, list);
2777                 list_del_init(&fw_event->list);
2778         }
2779         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2780
2781         return fw_event;
2782 }
2783
2784 /**
2785  * _scsih_fw_event_cleanup_queue - cleanup event queue
2786  * @ioc: per adapter object
2787  *
2788  * Walk the firmware event queue, either killing timers, or waiting
2789  * for outstanding events to complete
2790  *
2791  * Return nothing.
2792  */
2793 static void
2794 _scsih_fw_event_cleanup_queue(struct MPT3SAS_ADAPTER *ioc)
2795 {
2796         struct fw_event_work *fw_event;
2797
2798         if (list_empty(&ioc->fw_event_list) ||
2799              !ioc->firmware_event_thread || in_interrupt())
2800                 return;
2801
2802         while ((fw_event = dequeue_next_fw_event(ioc))) {
2803                 /*
2804                  * Wait on the fw_event to complete. If this returns 1, then
2805                  * the event was never executed, and we need a put for the
2806                  * reference the work had on the fw_event.
2807                  *
2808                  * If it did execute, we wait for it to finish, and the put will
2809                  * happen from _firmware_event_work()
2810                  */
2811                 if (cancel_work_sync(&fw_event->work))
2812                         fw_event_work_put(fw_event);
2813
2814                 fw_event_work_put(fw_event);
2815         }
2816 }
2817
2818 /**
2819  * _scsih_internal_device_block - block the sdev device
2820  * @sdev: per device object
2821  * @sas_device_priv_data : per device driver private data
2822  *
2823  * make sure device is blocked without error, if not
2824  * print an error
2825  */
2826 static void
2827 _scsih_internal_device_block(struct scsi_device *sdev,
2828                         struct MPT3SAS_DEVICE *sas_device_priv_data)
2829 {
2830         int r = 0;
2831
2832         sdev_printk(KERN_INFO, sdev, "device_block, handle(0x%04x)\n",
2833             sas_device_priv_data->sas_target->handle);
2834         sas_device_priv_data->block = 1;
2835
2836         r = scsi_internal_device_block(sdev);
2837         if (r == -EINVAL)
2838                 sdev_printk(KERN_WARNING, sdev,
2839                     "device_block failed with return(%d) for handle(0x%04x)\n",
2840                     sas_device_priv_data->sas_target->handle, r);
2841 }
2842
2843 /**
2844  * _scsih_internal_device_unblock - unblock the sdev device
2845  * @sdev: per device object
2846  * @sas_device_priv_data : per device driver private data
2847  * make sure device is unblocked without error, if not retry
2848  * by blocking and then unblocking
2849  */
2850
2851 static void
2852 _scsih_internal_device_unblock(struct scsi_device *sdev,
2853                         struct MPT3SAS_DEVICE *sas_device_priv_data)
2854 {
2855         int r = 0;
2856
2857         sdev_printk(KERN_WARNING, sdev, "device_unblock and setting to running, "
2858             "handle(0x%04x)\n", sas_device_priv_data->sas_target->handle);
2859         sas_device_priv_data->block = 0;
2860         r = scsi_internal_device_unblock(sdev, SDEV_RUNNING);
2861         if (r == -EINVAL) {
2862                 /* The device has been set to SDEV_RUNNING by SD layer during
2863                  * device addition but the request queue is still stopped by
2864                  * our earlier block call. We need to perform a block again
2865                  * to get the device to SDEV_BLOCK and then to SDEV_RUNNING */
2866
2867                 sdev_printk(KERN_WARNING, sdev,
2868                     "device_unblock failed with return(%d) for handle(0x%04x) "
2869                     "performing a block followed by an unblock\n",
2870                     sas_device_priv_data->sas_target->handle, r);
2871                 sas_device_priv_data->block = 1;
2872                 r = scsi_internal_device_block(sdev);
2873                 if (r)
2874                         sdev_printk(KERN_WARNING, sdev, "retried device_block "
2875                             "failed with return(%d) for handle(0x%04x)\n",
2876                             sas_device_priv_data->sas_target->handle, r);
2877
2878                 sas_device_priv_data->block = 0;
2879                 r = scsi_internal_device_unblock(sdev, SDEV_RUNNING);
2880                 if (r)
2881                         sdev_printk(KERN_WARNING, sdev, "retried device_unblock"
2882                             " failed with return(%d) for handle(0x%04x)\n",
2883                             sas_device_priv_data->sas_target->handle, r);
2884         }
2885 }
2886
2887 /**
2888  * _scsih_ublock_io_all_device - unblock every device
2889  * @ioc: per adapter object
2890  *
2891  * change the device state from block to running
2892  */
2893 static void
2894 _scsih_ublock_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2895 {
2896         struct MPT3SAS_DEVICE *sas_device_priv_data;
2897         struct scsi_device *sdev;
2898
2899         shost_for_each_device(sdev, ioc->shost) {
2900                 sas_device_priv_data = sdev->hostdata;
2901                 if (!sas_device_priv_data)
2902                         continue;
2903                 if (!sas_device_priv_data->block)
2904                         continue;
2905
2906                 dewtprintk(ioc, sdev_printk(KERN_INFO, sdev,
2907                         "device_running, handle(0x%04x)\n",
2908                     sas_device_priv_data->sas_target->handle));
2909                 _scsih_internal_device_unblock(sdev, sas_device_priv_data);
2910         }
2911 }
2912
2913
2914 /**
2915  * _scsih_ublock_io_device - prepare device to be deleted
2916  * @ioc: per adapter object
2917  * @sas_addr: sas address
2918  *
2919  * unblock then put device in offline state
2920  */
2921 static void
2922 _scsih_ublock_io_device(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
2923 {
2924         struct MPT3SAS_DEVICE *sas_device_priv_data;
2925         struct scsi_device *sdev;
2926
2927         shost_for_each_device(sdev, ioc->shost) {
2928                 sas_device_priv_data = sdev->hostdata;
2929                 if (!sas_device_priv_data)
2930                         continue;
2931                 if (sas_device_priv_data->sas_target->sas_address
2932                     != sas_address)
2933                         continue;
2934                 if (sas_device_priv_data->block)
2935                         _scsih_internal_device_unblock(sdev,
2936                                 sas_device_priv_data);
2937         }
2938 }
2939
2940 /**
2941  * _scsih_block_io_all_device - set the device state to SDEV_BLOCK
2942  * @ioc: per adapter object
2943  * @handle: device handle
2944  *
2945  * During device pull we need to appropiately set the sdev state.
2946  */
2947 static void
2948 _scsih_block_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2949 {
2950         struct MPT3SAS_DEVICE *sas_device_priv_data;
2951         struct scsi_device *sdev;
2952
2953         shost_for_each_device(sdev, ioc->shost) {
2954                 sas_device_priv_data = sdev->hostdata;
2955                 if (!sas_device_priv_data)
2956                         continue;
2957                 if (sas_device_priv_data->block)
2958                         continue;
2959                 if (sas_device_priv_data->ignore_delay_remove) {
2960                         sdev_printk(KERN_INFO, sdev,
2961                         "%s skip device_block for SES handle(0x%04x)\n",
2962                         __func__, sas_device_priv_data->sas_target->handle);
2963                         continue;
2964                 }
2965                 _scsih_internal_device_block(sdev, sas_device_priv_data);
2966         }
2967 }
2968
2969 /**
2970  * _scsih_block_io_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 appropiately set the sdev state.
2975  */
2976 static void
2977 _scsih_block_io_device(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2978 {
2979         struct MPT3SAS_DEVICE *sas_device_priv_data;
2980         struct scsi_device *sdev;
2981         struct _sas_device *sas_device;
2982
2983         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
2984         if (!sas_device)
2985                 return;
2986
2987         shost_for_each_device(sdev, ioc->shost) {
2988                 sas_device_priv_data = sdev->hostdata;
2989                 if (!sas_device_priv_data)
2990                         continue;
2991                 if (sas_device_priv_data->sas_target->handle != handle)
2992                         continue;
2993                 if (sas_device_priv_data->block)
2994                         continue;
2995                 if (sas_device->pend_sas_rphy_add)
2996                         continue;
2997                 if (sas_device_priv_data->ignore_delay_remove) {
2998                         sdev_printk(KERN_INFO, sdev,
2999                         "%s skip device_block for SES handle(0x%04x)\n",
3000                         __func__, sas_device_priv_data->sas_target->handle);
3001                         continue;
3002                 }
3003                 _scsih_internal_device_block(sdev, sas_device_priv_data);
3004         }
3005
3006         sas_device_put(sas_device);
3007 }
3008
3009 /**
3010  * _scsih_block_io_to_children_attached_to_ex
3011  * @ioc: per adapter object
3012  * @sas_expander: the sas_device object
3013  *
3014  * This routine set sdev state to SDEV_BLOCK for all devices
3015  * attached to this expander. This function called when expander is
3016  * pulled.
3017  */
3018 static void
3019 _scsih_block_io_to_children_attached_to_ex(struct MPT3SAS_ADAPTER *ioc,
3020         struct _sas_node *sas_expander)
3021 {
3022         struct _sas_port *mpt3sas_port;
3023         struct _sas_device *sas_device;
3024         struct _sas_node *expander_sibling;
3025         unsigned long flags;
3026
3027         if (!sas_expander)
3028                 return;
3029
3030         list_for_each_entry(mpt3sas_port,
3031            &sas_expander->sas_port_list, port_list) {
3032                 if (mpt3sas_port->remote_identify.device_type ==
3033                     SAS_END_DEVICE) {
3034                         spin_lock_irqsave(&ioc->sas_device_lock, flags);
3035                         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
3036                             mpt3sas_port->remote_identify.sas_address);
3037                         if (sas_device) {
3038                                 set_bit(sas_device->handle,
3039                                                 ioc->blocking_handles);
3040                                 sas_device_put(sas_device);
3041                         }
3042                         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3043                 }
3044         }
3045
3046         list_for_each_entry(mpt3sas_port,
3047            &sas_expander->sas_port_list, port_list) {
3048
3049                 if (mpt3sas_port->remote_identify.device_type ==
3050                     SAS_EDGE_EXPANDER_DEVICE ||
3051                     mpt3sas_port->remote_identify.device_type ==
3052                     SAS_FANOUT_EXPANDER_DEVICE) {
3053                         expander_sibling =
3054                             mpt3sas_scsih_expander_find_by_sas_address(
3055                             ioc, mpt3sas_port->remote_identify.sas_address);
3056                         _scsih_block_io_to_children_attached_to_ex(ioc,
3057                             expander_sibling);
3058                 }
3059         }
3060 }
3061
3062 /**
3063  * _scsih_block_io_to_children_attached_directly
3064  * @ioc: per adapter object
3065  * @event_data: topology change event data
3066  *
3067  * This routine set sdev state to SDEV_BLOCK for all devices
3068  * direct attached during device pull.
3069  */
3070 static void
3071 _scsih_block_io_to_children_attached_directly(struct MPT3SAS_ADAPTER *ioc,
3072         Mpi2EventDataSasTopologyChangeList_t *event_data)
3073 {
3074         int i;
3075         u16 handle;
3076         u16 reason_code;
3077
3078         for (i = 0; i < event_data->NumEntries; i++) {
3079                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3080                 if (!handle)
3081                         continue;
3082                 reason_code = event_data->PHY[i].PhyStatus &
3083                     MPI2_EVENT_SAS_TOPO_RC_MASK;
3084                 if (reason_code == MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING)
3085                         _scsih_block_io_device(ioc, handle);
3086         }
3087 }
3088
3089 /**
3090  * _scsih_tm_tr_send - send task management request
3091  * @ioc: per adapter object
3092  * @handle: device handle
3093  * Context: interrupt time.
3094  *
3095  * This code is to initiate the device removal handshake protocol
3096  * with controller firmware.  This function will issue target reset
3097  * using high priority request queue.  It will send a sas iounit
3098  * control request (MPI2_SAS_OP_REMOVE_DEVICE) from this completion.
3099  *
3100  * This is designed to send muliple task management request at the same
3101  * time to the fifo. If the fifo is full, we will append the request,
3102  * and process it in a future completion.
3103  */
3104 static void
3105 _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3106 {
3107         Mpi2SCSITaskManagementRequest_t *mpi_request;
3108         u16 smid;
3109         struct _sas_device *sas_device = NULL;
3110         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
3111         u64 sas_address = 0;
3112         unsigned long flags;
3113         struct _tr_list *delayed_tr;
3114         u32 ioc_state;
3115
3116         if (ioc->remove_host) {
3117                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3118                         "%s: host has been removed: handle(0x%04x)\n",
3119                         __func__, ioc->name, handle));
3120                 return;
3121         } else if (ioc->pci_error_recovery) {
3122                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3123                         "%s: host in pci error recovery: handle(0x%04x)\n",
3124                         __func__, ioc->name,
3125                     handle));
3126                 return;
3127         }
3128         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3129         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3130                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3131                         "%s: host is not operational: handle(0x%04x)\n",
3132                         __func__, ioc->name,
3133                    handle));
3134                 return;
3135         }
3136
3137         /* if PD, then return */
3138         if (test_bit(handle, ioc->pd_handles))
3139                 return;
3140
3141         spin_lock_irqsave(&ioc->sas_device_lock, flags);
3142         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
3143         if (sas_device && sas_device->starget &&
3144             sas_device->starget->hostdata) {
3145                 sas_target_priv_data = sas_device->starget->hostdata;
3146                 sas_target_priv_data->deleted = 1;
3147                 sas_address = sas_device->sas_address;
3148         }
3149         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3150
3151         if (sas_target_priv_data) {
3152                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3153                         "setting delete flag: handle(0x%04x), sas_addr(0x%016llx)\n",
3154                         ioc->name, handle,
3155                     (unsigned long long)sas_address));
3156                 if (sas_device->enclosure_handle != 0)
3157                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3158                          "setting delete flag:enclosure logical id(0x%016llx),"
3159                          " slot(%d)\n", ioc->name, (unsigned long long)
3160                           sas_device->enclosure_logical_id,
3161                           sas_device->slot));
3162                 if (sas_device->connector_name[0] != '\0')
3163                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3164                          "setting delete flag: enclosure level(0x%04x),"
3165                          " connector name( %s)\n", ioc->name,
3166                           sas_device->enclosure_level,
3167                           sas_device->connector_name));
3168                 _scsih_ublock_io_device(ioc, sas_address);
3169                 sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
3170         }
3171
3172         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_cb_idx);
3173         if (!smid) {
3174                 delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3175                 if (!delayed_tr)
3176                         goto out;
3177                 INIT_LIST_HEAD(&delayed_tr->list);
3178                 delayed_tr->handle = handle;
3179                 list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3180                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3181                     "DELAYED:tr:handle(0x%04x), (open)\n",
3182                     ioc->name, handle));
3183                 goto out;
3184         }
3185
3186         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3187                 "tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3188                 ioc->name, handle, smid,
3189             ioc->tm_tr_cb_idx));
3190         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3191         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3192         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3193         mpi_request->DevHandle = cpu_to_le16(handle);
3194         mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3195         mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
3196         mpt3sas_trigger_master(ioc, MASTER_TRIGGER_DEVICE_REMOVAL);
3197
3198 out:
3199         if (sas_device)
3200                 sas_device_put(sas_device);
3201 }
3202
3203 /**
3204  * _scsih_tm_tr_complete -
3205  * @ioc: per adapter object
3206  * @smid: system request message index
3207  * @msix_index: MSIX table index supplied by the OS
3208  * @reply: reply message frame(lower 32bit addr)
3209  * Context: interrupt time.
3210  *
3211  * This is the target reset completion routine.
3212  * This code is part of the code to initiate the device removal
3213  * handshake protocol with controller firmware.
3214  * It will send a sas iounit control request (MPI2_SAS_OP_REMOVE_DEVICE)
3215  *
3216  * Return 1 meaning mf should be freed from _base_interrupt
3217  *        0 means the mf is freed from this function.
3218  */
3219 static u8
3220 _scsih_tm_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3221         u32 reply)
3222 {
3223         u16 handle;
3224         Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3225         Mpi2SCSITaskManagementReply_t *mpi_reply =
3226             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3227         Mpi2SasIoUnitControlRequest_t *mpi_request;
3228         u16 smid_sas_ctrl;
3229         u32 ioc_state;
3230         struct _sc_list *delayed_sc;
3231
3232         if (ioc->remove_host) {
3233                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3234                         "%s: host has been removed\n", __func__, ioc->name));
3235                 return 1;
3236         } else if (ioc->pci_error_recovery) {
3237                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3238                         "%s: host in pci error recovery\n", __func__,
3239                         ioc->name));
3240                 return 1;
3241         }
3242         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3243         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3244                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3245                         "%s: host is not operational\n", __func__, ioc->name));
3246                 return 1;
3247         }
3248         if (unlikely(!mpi_reply)) {
3249                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3250                     ioc->name, __FILE__, __LINE__, __func__);
3251                 return 1;
3252         }
3253         mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3254         handle = le16_to_cpu(mpi_request_tm->DevHandle);
3255         if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3256                 dewtprintk(ioc, pr_err(MPT3SAS_FMT
3257                         "spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3258                         ioc->name, handle,
3259                     le16_to_cpu(mpi_reply->DevHandle), smid));
3260                 return 0;
3261         }
3262
3263         mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
3264         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3265             "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3266             "loginfo(0x%08x), completed(%d)\n", ioc->name,
3267             handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3268             le32_to_cpu(mpi_reply->IOCLogInfo),
3269             le32_to_cpu(mpi_reply->TerminationCount)));
3270
3271         smid_sas_ctrl = mpt3sas_base_get_smid(ioc, ioc->tm_sas_control_cb_idx);
3272         if (!smid_sas_ctrl) {
3273                 delayed_sc = kzalloc(sizeof(*delayed_sc), GFP_ATOMIC);
3274                 if (!delayed_sc)
3275                         return _scsih_check_for_pending_tm(ioc, smid);
3276                 INIT_LIST_HEAD(&delayed_sc->list);
3277                 delayed_sc->handle = mpi_request_tm->DevHandle;
3278                 list_add_tail(&delayed_sc->list, &ioc->delayed_sc_list);
3279                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3280                     "DELAYED:sc:handle(0x%04x), (open)\n",
3281                     ioc->name, handle));
3282                 return _scsih_check_for_pending_tm(ioc, smid);
3283         }
3284
3285         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3286                 "sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3287                 ioc->name, handle, smid_sas_ctrl,
3288             ioc->tm_sas_control_cb_idx));
3289         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid_sas_ctrl);
3290         memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3291         mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3292         mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3293         mpi_request->DevHandle = mpi_request_tm->DevHandle;
3294         mpt3sas_base_put_smid_default(ioc, smid_sas_ctrl);
3295
3296         return _scsih_check_for_pending_tm(ioc, smid);
3297 }
3298
3299
3300 /**
3301  * _scsih_sas_control_complete - completion routine
3302  * @ioc: per adapter object
3303  * @smid: system request message index
3304  * @msix_index: MSIX table index supplied by the OS
3305  * @reply: reply message frame(lower 32bit addr)
3306  * Context: interrupt time.
3307  *
3308  * This is the sas iounit control completion routine.
3309  * This code is part of the code to initiate the device removal
3310  * handshake protocol with controller firmware.
3311  *
3312  * Return 1 meaning mf should be freed from _base_interrupt
3313  *        0 means the mf is freed from this function.
3314  */
3315 static u8
3316 _scsih_sas_control_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3317         u8 msix_index, u32 reply)
3318 {
3319         Mpi2SasIoUnitControlReply_t *mpi_reply =
3320             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3321
3322         if (likely(mpi_reply)) {
3323                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3324                 "sc_complete:handle(0x%04x), (open) "
3325                 "smid(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
3326                 ioc->name, le16_to_cpu(mpi_reply->DevHandle), smid,
3327                 le16_to_cpu(mpi_reply->IOCStatus),
3328                 le32_to_cpu(mpi_reply->IOCLogInfo)));
3329         } else {
3330                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3331                     ioc->name, __FILE__, __LINE__, __func__);
3332         }
3333         return mpt3sas_check_for_pending_internal_cmds(ioc, smid);
3334 }
3335
3336 /**
3337  * _scsih_tm_tr_volume_send - send target reset request for volumes
3338  * @ioc: per adapter object
3339  * @handle: device handle
3340  * Context: interrupt time.
3341  *
3342  * This is designed to send muliple task management request at the same
3343  * time to the fifo. If the fifo is full, we will append the request,
3344  * and process it in a future completion.
3345  */
3346 static void
3347 _scsih_tm_tr_volume_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3348 {
3349         Mpi2SCSITaskManagementRequest_t *mpi_request;
3350         u16 smid;
3351         struct _tr_list *delayed_tr;
3352
3353         if (ioc->shost_recovery || ioc->remove_host ||
3354             ioc->pci_error_recovery) {
3355                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3356                         "%s: host reset in progress!\n",
3357                         __func__, ioc->name));
3358                 return;
3359         }
3360
3361         smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_volume_cb_idx);
3362         if (!smid) {
3363                 delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3364                 if (!delayed_tr)
3365                         return;
3366                 INIT_LIST_HEAD(&delayed_tr->list);
3367                 delayed_tr->handle = handle;
3368                 list_add_tail(&delayed_tr->list, &ioc->delayed_tr_volume_list);
3369                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3370                     "DELAYED:tr:handle(0x%04x), (open)\n",
3371                     ioc->name, handle));
3372                 return;
3373         }
3374
3375         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3376                 "tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3377                 ioc->name, handle, smid,
3378             ioc->tm_tr_volume_cb_idx));
3379         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3380         memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3381         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3382         mpi_request->DevHandle = cpu_to_le16(handle);
3383         mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3384         mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
3385 }
3386
3387 /**
3388  * _scsih_tm_volume_tr_complete - target reset completion
3389  * @ioc: per adapter object
3390  * @smid: system request message index
3391  * @msix_index: MSIX table index supplied by the OS
3392  * @reply: reply message frame(lower 32bit addr)
3393  * Context: interrupt time.
3394  *
3395  * Return 1 meaning mf should be freed from _base_interrupt
3396  *        0 means the mf is freed from this function.
3397  */
3398 static u8
3399 _scsih_tm_volume_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3400         u8 msix_index, u32 reply)
3401 {
3402         u16 handle;
3403         Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3404         Mpi2SCSITaskManagementReply_t *mpi_reply =
3405             mpt3sas_base_get_reply_virt_addr(ioc, reply);
3406
3407         if (ioc->shost_recovery || ioc->remove_host ||
3408             ioc->pci_error_recovery) {
3409                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3410                         "%s: host reset in progress!\n",
3411                         __func__, ioc->name));
3412                 return 1;
3413         }
3414         if (unlikely(!mpi_reply)) {
3415                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3416                     ioc->name, __FILE__, __LINE__, __func__);
3417                 return 1;
3418         }
3419
3420         mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3421         handle = le16_to_cpu(mpi_request_tm->DevHandle);
3422         if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3423                 dewtprintk(ioc, pr_err(MPT3SAS_FMT
3424                         "spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3425                         ioc->name, handle,
3426                     le16_to_cpu(mpi_reply->DevHandle), smid));
3427                 return 0;
3428         }
3429
3430         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3431             "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3432             "loginfo(0x%08x), completed(%d)\n", ioc->name,
3433             handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3434             le32_to_cpu(mpi_reply->IOCLogInfo),
3435             le32_to_cpu(mpi_reply->TerminationCount)));
3436
3437         return _scsih_check_for_pending_tm(ioc, smid);
3438 }
3439
3440 /**
3441  * _scsih_issue_delayed_event_ack - issue delayed Event ACK messages
3442  * @ioc: per adapter object
3443  * @smid: system request message index
3444  * @event: Event ID
3445  * @event_context: used to track events uniquely
3446  *
3447  * Context - processed in interrupt context.
3448  */
3449 static void
3450 _scsih_issue_delayed_event_ack(struct MPT3SAS_ADAPTER *ioc, u16 smid, u16 event,
3451                                 u32 event_context)
3452 {
3453         Mpi2EventAckRequest_t *ack_request;
3454         int i = smid - ioc->internal_smid;
3455         unsigned long flags;
3456
3457         /* Without releasing the smid just update the
3458          * call back index and reuse the same smid for
3459          * processing this delayed request
3460          */
3461         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3462         ioc->internal_lookup[i].cb_idx = ioc->base_cb_idx;
3463         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3464
3465         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3466                 "EVENT ACK: event(0x%04x), smid(%d), cb(%d)\n",
3467                 ioc->name, le16_to_cpu(event), smid,
3468                 ioc->base_cb_idx));
3469         ack_request = mpt3sas_base_get_msg_frame(ioc, smid);
3470         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
3471         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
3472         ack_request->Event = event;
3473         ack_request->EventContext = event_context;
3474         ack_request->VF_ID = 0;  /* TODO */
3475         ack_request->VP_ID = 0;
3476         mpt3sas_base_put_smid_default(ioc, smid);
3477 }
3478
3479 /**
3480  * _scsih_issue_delayed_sas_io_unit_ctrl - issue delayed
3481  *                              sas_io_unit_ctrl messages
3482  * @ioc: per adapter object
3483  * @smid: system request message index
3484  * @handle: device handle
3485  *
3486  * Context - processed in interrupt context.
3487  */
3488 static void
3489 _scsih_issue_delayed_sas_io_unit_ctrl(struct MPT3SAS_ADAPTER *ioc,
3490                                         u16 smid, u16 handle)
3491         {
3492                 Mpi2SasIoUnitControlRequest_t *mpi_request;
3493                 u32 ioc_state;
3494                 int i = smid - ioc->internal_smid;
3495                 unsigned long flags;
3496
3497                 if (ioc->remove_host) {
3498                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3499                             "%s: host has been removed\n",
3500                              __func__, ioc->name));
3501                         return;
3502                 } else if (ioc->pci_error_recovery) {
3503                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3504                             "%s: host in pci error recovery\n",
3505                             __func__, ioc->name));
3506                 return;
3507         }
3508         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3509         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3510                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3511                     "%s: host is not operational\n",
3512                     __func__, ioc->name));
3513                 return;
3514         }
3515
3516         /* Without releasing the smid just update the
3517          * call back index and reuse the same smid for
3518          * processing this delayed request
3519          */
3520         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3521         ioc->internal_lookup[i].cb_idx = ioc->tm_sas_control_cb_idx;
3522         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3523
3524         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3525             "sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3526             ioc->name, le16_to_cpu(handle), smid,
3527             ioc->tm_sas_control_cb_idx));
3528         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3529         memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3530         mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3531         mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3532         mpi_request->DevHandle = handle;
3533         mpt3sas_base_put_smid_default(ioc, smid);
3534 }
3535
3536 /**
3537  * _scsih_check_for_pending_internal_cmds - check for pending internal messages
3538  * @ioc: per adapter object
3539  * @smid: system request message index
3540  *
3541  * Context: Executed in interrupt context
3542  *
3543  * This will check delayed internal messages list, and process the
3544  * next request.
3545  *
3546  * Return 1 meaning mf should be freed from _base_interrupt
3547  *        0 means the mf is freed from this function.
3548  */
3549 u8
3550 mpt3sas_check_for_pending_internal_cmds(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3551 {
3552         struct _sc_list *delayed_sc;
3553         struct _event_ack_list *delayed_event_ack;
3554
3555         if (!list_empty(&ioc->delayed_event_ack_list)) {
3556                 delayed_event_ack = list_entry(ioc->delayed_event_ack_list.next,
3557                                                 struct _event_ack_list, list);
3558                 _scsih_issue_delayed_event_ack(ioc, smid,
3559                   delayed_event_ack->Event, delayed_event_ack->EventContext);
3560                 list_del(&delayed_event_ack->list);
3561                 kfree(delayed_event_ack);
3562                 return 0;
3563         }
3564
3565         if (!list_empty(&ioc->delayed_sc_list)) {
3566                 delayed_sc = list_entry(ioc->delayed_sc_list.next,
3567                                                 struct _sc_list, list);
3568                 _scsih_issue_delayed_sas_io_unit_ctrl(ioc, smid,
3569                                                  delayed_sc->handle);
3570                 list_del(&delayed_sc->list);
3571                 kfree(delayed_sc);
3572                 return 0;
3573         }
3574         return 1;
3575 }
3576
3577 /**
3578  * _scsih_check_for_pending_tm - check for pending task management
3579  * @ioc: per adapter object
3580  * @smid: system request message index
3581  *
3582  * This will check delayed target reset list, and feed the
3583  * next reqeust.
3584  *
3585  * Return 1 meaning mf should be freed from _base_interrupt
3586  *        0 means the mf is freed from this function.
3587  */
3588 static u8
3589 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3590 {
3591         struct _tr_list *delayed_tr;
3592
3593         if (!list_empty(&ioc->delayed_tr_volume_list)) {
3594                 delayed_tr = list_entry(ioc->delayed_tr_volume_list.next,
3595                     struct _tr_list, list);
3596                 mpt3sas_base_free_smid(ioc, smid);
3597                 _scsih_tm_tr_volume_send(ioc, delayed_tr->handle);
3598                 list_del(&delayed_tr->list);
3599                 kfree(delayed_tr);
3600                 return 0;
3601         }
3602
3603         if (!list_empty(&ioc->delayed_tr_list)) {
3604                 delayed_tr = list_entry(ioc->delayed_tr_list.next,
3605                     struct _tr_list, list);
3606                 mpt3sas_base_free_smid(ioc, smid);
3607                 _scsih_tm_tr_send(ioc, delayed_tr->handle);
3608                 list_del(&delayed_tr->list);
3609                 kfree(delayed_tr);
3610                 return 0;
3611         }
3612
3613         return 1;
3614 }
3615
3616 /**
3617  * _scsih_check_topo_delete_events - sanity check on topo events
3618  * @ioc: per adapter object
3619  * @event_data: the event data payload
3620  *
3621  * This routine added to better handle cable breaker.
3622  *
3623  * This handles the case where driver receives multiple expander
3624  * add and delete events in a single shot.  When there is a delete event
3625  * the routine will void any pending add events waiting in the event queue.
3626  *
3627  * Return nothing.
3628  */
3629 static void
3630 _scsih_check_topo_delete_events(struct MPT3SAS_ADAPTER *ioc,
3631         Mpi2EventDataSasTopologyChangeList_t *event_data)
3632 {
3633         struct fw_event_work *fw_event;
3634         Mpi2EventDataSasTopologyChangeList_t *local_event_data;
3635         u16 expander_handle;
3636         struct _sas_node *sas_expander;
3637         unsigned long flags;
3638         int i, reason_code;
3639         u16 handle;
3640
3641         for (i = 0 ; i < event_data->NumEntries; i++) {
3642                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3643                 if (!handle)
3644                         continue;
3645                 reason_code = event_data->PHY[i].PhyStatus &
3646                     MPI2_EVENT_SAS_TOPO_RC_MASK;
3647                 if (reason_code == MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING)
3648                         _scsih_tm_tr_send(ioc, handle);
3649         }
3650
3651         expander_handle = le16_to_cpu(event_data->ExpanderDevHandle);
3652         if (expander_handle < ioc->sas_hba.num_phys) {
3653                 _scsih_block_io_to_children_attached_directly(ioc, event_data);
3654                 return;
3655         }
3656         if (event_data->ExpStatus ==
3657             MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING) {
3658                 /* put expander attached devices into blocking state */
3659                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
3660                 sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
3661                     expander_handle);
3662                 _scsih_block_io_to_children_attached_to_ex(ioc, sas_expander);
3663                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
3664                 do {
3665                         handle = find_first_bit(ioc->blocking_handles,
3666                             ioc->facts.MaxDevHandle);
3667                         if (handle < ioc->facts.MaxDevHandle)
3668                                 _scsih_block_io_device(ioc, handle);
3669                 } while (test_and_clear_bit(handle, ioc->blocking_handles));
3670         } else if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_RESPONDING)
3671                 _scsih_block_io_to_children_attached_directly(ioc, event_data);
3672
3673         if (event_data->ExpStatus != MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING)
3674                 return;
3675
3676         /* mark ignore flag for pending events */
3677         spin_lock_irqsave(&ioc->fw_event_lock, flags);
3678         list_for_each_entry(fw_event, &ioc->fw_event_list, list) {
3679                 if (fw_event->event != MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST ||
3680                     fw_event->ignore)
3681                         continue;
3682                 local_event_data = (Mpi2EventDataSasTopologyChangeList_t *)
3683                                    fw_event->event_data;
3684                 if (local_event_data->ExpStatus ==
3685                     MPI2_EVENT_SAS_TOPO_ES_ADDED ||
3686                     local_event_data->ExpStatus ==
3687                     MPI2_EVENT_SAS_TOPO_ES_RESPONDING) {
3688                         if (le16_to_cpu(local_event_data->ExpanderDevHandle) ==
3689                             expander_handle) {
3690                                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3691                                     "setting ignoring flag\n", ioc->name));
3692                                 fw_event->ignore = 1;
3693                         }
3694                 }
3695         }
3696         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
3697 }
3698
3699 /**
3700  * _scsih_set_volume_delete_flag - setting volume delete flag
3701  * @ioc: per adapter object
3702  * @handle: device handle
3703  *
3704  * This returns nothing.
3705  */
3706 static void
3707 _scsih_set_volume_delete_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3708 {
3709         struct _raid_device *raid_device;
3710         struct MPT3SAS_TARGET *sas_target_priv_data;
3711         unsigned long flags;
3712
3713         spin_lock_irqsave(&ioc->raid_device_lock, flags);
3714         raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
3715         if (raid_device && raid_device->starget &&
3716             raid_device->starget->hostdata) {
3717                 sas_target_priv_data =
3718                     raid_device->starget->hostdata;
3719                 sas_target_priv_data->deleted = 1;
3720                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
3721                     "setting delete flag: handle(0x%04x), "
3722                     "wwid(0x%016llx)\n", ioc->name, handle,
3723                     (unsigned long long) raid_device->wwid));
3724         }
3725         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
3726 }
3727
3728 /**
3729  * _scsih_set_volume_handle_for_tr - set handle for target reset to volume
3730  * @handle: input handle
3731  * @a: handle for volume a
3732  * @b: handle for volume b
3733  *
3734  * IR firmware only supports two raid volumes.  The purpose of this
3735  * routine is to set the volume handle in either a or b. When the given
3736  * input handle is non-zero, or when a and b have not been set before.
3737  */
3738 static void
3739 _scsih_set_volume_handle_for_tr(u16 handle, u16 *a, u16 *b)
3740 {
3741         if (!handle || handle == *a || handle == *b)
3742                 return;
3743         if (!*a)
3744                 *a = handle;
3745         else if (!*b)
3746                 *b = handle;
3747 }
3748
3749 /**
3750  * _scsih_check_ir_config_unhide_events - check for UNHIDE events
3751  * @ioc: per adapter object
3752  * @event_data: the event data payload
3753  * Context: interrupt time.
3754  *
3755  * This routine will send target reset to volume, followed by target
3756  * resets to the PDs. This is called when a PD has been removed, or
3757  * volume has been deleted or removed. When the target reset is sent
3758  * to volume, the PD target resets need to be queued to start upon
3759  * completion of the volume target reset.
3760  *
3761  * Return nothing.
3762  */
3763 static void
3764 _scsih_check_ir_config_unhide_events(struct MPT3SAS_ADAPTER *ioc,
3765         Mpi2EventDataIrConfigChangeList_t *event_data)
3766 {
3767         Mpi2EventIrConfigElement_t *element;
3768         int i;
3769         u16 handle, volume_handle, a, b;
3770         struct _tr_list *delayed_tr;
3771
3772         a = 0;
3773         b = 0;
3774
3775         if (ioc->is_warpdrive)
3776                 return;
3777
3778         /* Volume Resets for Deleted or Removed */
3779         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3780         for (i = 0; i < event_data->NumElements; i++, element++) {
3781                 if (le32_to_cpu(event_data->Flags) &
3782                     MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3783                         continue;
3784                 if (element->ReasonCode ==
3785                     MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED ||
3786                     element->ReasonCode ==
3787                     MPI2_EVENT_IR_CHANGE_RC_REMOVED) {
3788                         volume_handle = le16_to_cpu(element->VolDevHandle);
3789                         _scsih_set_volume_delete_flag(ioc, volume_handle);
3790                         _scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3791                 }
3792         }
3793
3794         /* Volume Resets for UNHIDE events */
3795         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3796         for (i = 0; i < event_data->NumElements; i++, element++) {
3797                 if (le32_to_cpu(event_data->Flags) &
3798                     MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3799                         continue;
3800                 if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_UNHIDE) {
3801                         volume_handle = le16_to_cpu(element->VolDevHandle);
3802                         _scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3803                 }
3804         }
3805
3806         if (a)
3807                 _scsih_tm_tr_volume_send(ioc, a);
3808         if (b)
3809                 _scsih_tm_tr_volume_send(ioc, b);
3810
3811         /* PD target resets */
3812         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3813         for (i = 0; i < event_data->NumElements; i++, element++) {
3814                 if (element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_UNHIDE)
3815                         continue;
3816                 handle = le16_to_cpu(element->PhysDiskDevHandle);
3817                 volume_handle = le16_to_cpu(element->VolDevHandle);
3818                 clear_bit(handle, ioc->pd_handles);
3819                 if (!volume_handle)
3820                         _scsih_tm_tr_send(ioc, handle);
3821                 else if (volume_handle == a || volume_handle == b) {
3822                         delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3823                         BUG_ON(!delayed_tr);
3824                         INIT_LIST_HEAD(&delayed_tr->list);
3825                         delayed_tr->handle = handle;
3826                         list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3827                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
3828                             "DELAYED:tr:handle(0x%04x), (open)\n", ioc->name,
3829                             handle));
3830                 } else
3831                         _scsih_tm_tr_send(ioc, handle);
3832         }
3833 }
3834
3835
3836 /**
3837  * _scsih_check_volume_delete_events - set delete flag for volumes
3838  * @ioc: per adapter object
3839  * @event_data: the event data payload
3840  * Context: interrupt time.
3841  *
3842  * This will handle the case when the cable connected to entire volume is
3843  * pulled. We will take care of setting the deleted flag so normal IO will
3844  * not be sent.
3845  *
3846  * Return nothing.
3847  */
3848 static void
3849 _scsih_check_volume_delete_events(struct MPT3SAS_ADAPTER *ioc,
3850         Mpi2EventDataIrVolume_t *event_data)
3851 {
3852         u32 state;
3853
3854         if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
3855                 return;
3856         state = le32_to_cpu(event_data->NewValue);
3857         if (state == MPI2_RAID_VOL_STATE_MISSING || state ==
3858             MPI2_RAID_VOL_STATE_FAILED)
3859                 _scsih_set_volume_delete_flag(ioc,
3860                     le16_to_cpu(event_data->VolDevHandle));
3861 }
3862
3863 /**
3864  * _scsih_temp_threshold_events - display temperature threshold exceeded events
3865  * @ioc: per adapter object
3866  * @event_data: the temp threshold event data
3867  * Context: interrupt time.
3868  *
3869  * Return nothing.
3870  */
3871 static void
3872 _scsih_temp_threshold_events(struct MPT3SAS_ADAPTER *ioc,
3873         Mpi2EventDataTemperature_t *event_data)
3874 {
3875         if (ioc->temp_sensors_count >= event_data->SensorNum) {
3876                 pr_err(MPT3SAS_FMT "Temperature Threshold flags %s%s%s%s"
3877                   " exceeded for Sensor: %d !!!\n", ioc->name,
3878                   ((le16_to_cpu(event_data->Status) & 0x1) == 1) ? "0 " : " ",
3879                   ((le16_to_cpu(event_data->Status) & 0x2) == 2) ? "1 " : " ",
3880                   ((le16_to_cpu(event_data->Status) & 0x4) == 4) ? "2 " : " ",
3881                   ((le16_to_cpu(event_data->Status) & 0x8) == 8) ? "3 " : " ",
3882                   event_data->SensorNum);
3883                 pr_err(MPT3SAS_FMT "Current Temp In Celsius: %d\n",
3884                         ioc->name, event_data->CurrentTemperature);
3885         }
3886 }
3887
3888 /**
3889  * _scsih_flush_running_cmds - completing outstanding commands.
3890  * @ioc: per adapter object
3891  *
3892  * The flushing out of all pending scmd commands following host reset,
3893  * where all IO is dropped to the floor.
3894  *
3895  * Return nothing.
3896  */
3897 static void
3898 _scsih_flush_running_cmds(struct MPT3SAS_ADAPTER *ioc)
3899 {
3900         struct scsi_cmnd *scmd;
3901         u16 smid;
3902         u16 count = 0;
3903
3904         for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
3905                 scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
3906                 if (!scmd)
3907                         continue;
3908                 count++;
3909                 mpt3sas_base_free_smid(ioc, smid);
3910                 scsi_dma_unmap(scmd);
3911                 if (ioc->pci_error_recovery)
3912                         scmd->result = DID_NO_CONNECT << 16;
3913                 else
3914                         scmd->result = DID_RESET << 16;
3915                 scmd->scsi_done(scmd);
3916         }
3917         dtmprintk(ioc, pr_info(MPT3SAS_FMT "completing %d cmds\n",
3918             ioc->name, count));
3919 }
3920
3921 /**
3922  * _scsih_setup_eedp - setup MPI request for EEDP transfer
3923  * @ioc: per adapter object
3924  * @scmd: pointer to scsi command object
3925  * @mpi_request: pointer to the SCSI_IO reqest message frame
3926  *
3927  * Supporting protection 1 and 3.
3928  *
3929  * Returns nothing
3930  */
3931 static void
3932 _scsih_setup_eedp(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
3933         Mpi2SCSIIORequest_t *mpi_request)
3934 {
3935         u16 eedp_flags;
3936         unsigned char prot_op = scsi_get_prot_op(scmd);
3937         unsigned char prot_type = scsi_get_prot_type(scmd);
3938         Mpi25SCSIIORequest_t *mpi_request_3v =
3939            (Mpi25SCSIIORequest_t *)mpi_request;
3940
3941         if (prot_type == SCSI_PROT_DIF_TYPE0 || prot_op == SCSI_PROT_NORMAL)
3942                 return;
3943
3944         if (prot_op ==  SCSI_PROT_READ_STRIP)
3945                 eedp_flags = MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP;
3946         else if (prot_op ==  SCSI_PROT_WRITE_INSERT)
3947                 eedp_flags = MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
3948         else
3949                 return;
3950
3951         switch (prot_type) {
3952         case SCSI_PROT_DIF_TYPE1:
3953         case SCSI_PROT_DIF_TYPE2:
3954
3955                 /*
3956                 * enable ref/guard checking
3957                 * auto increment ref tag
3958                 */
3959                 eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
3960                     MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
3961                     MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
3962                 mpi_request->CDB.EEDP32.PrimaryReferenceTag =
3963                     cpu_to_be32(scsi_prot_ref_tag(scmd));
3964                 break;
3965
3966         case SCSI_PROT_DIF_TYPE3:
3967
3968                 /*
3969                 * enable guard checking
3970                 */
3971                 eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
3972
3973                 break;
3974         }
3975
3976         mpi_request_3v->EEDPBlockSize =
3977             cpu_to_le16(scmd->device->sector_size);
3978         mpi_request->EEDPFlags = cpu_to_le16(eedp_flags);
3979 }
3980
3981 /**
3982  * _scsih_eedp_error_handling - return sense code for EEDP errors
3983  * @scmd: pointer to scsi command object
3984  * @ioc_status: ioc status
3985  *
3986  * Returns nothing
3987  */
3988 static void
3989 _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
3990 {
3991         u8 ascq;
3992
3993         switch (ioc_status) {
3994         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
3995                 ascq = 0x01;
3996                 break;
3997         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
3998                 ascq = 0x02;
3999                 break;
4000         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4001                 ascq = 0x03;
4002                 break;
4003         default:
4004                 ascq = 0x00;
4005                 break;
4006         }
4007         scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x10,
4008             ascq);
4009         scmd->result = DRIVER_SENSE << 24 | (DID_ABORT << 16) |
4010             SAM_STAT_CHECK_CONDITION;
4011 }
4012
4013
4014
4015 /**
4016  * scsih_qcmd - main scsi request entry point
4017  * @scmd: pointer to scsi command object
4018  * @done: function pointer to be invoked on completion
4019  *
4020  * The callback index is set inside `ioc->scsi_io_cb_idx`.
4021  *
4022  * Returns 0 on success.  If there's a failure, return either:
4023  * SCSI_MLQUEUE_DEVICE_BUSY if the device queue is full, or
4024  * SCSI_MLQUEUE_HOST_BUSY if the entire host queue is full
4025  */
4026 static int
4027 scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
4028 {
4029         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
4030         struct MPT3SAS_DEVICE *sas_device_priv_data;
4031         struct MPT3SAS_TARGET *sas_target_priv_data;
4032         struct _raid_device *raid_device;
4033         Mpi2SCSIIORequest_t *mpi_request;
4034         u32 mpi_control;
4035         u16 smid;
4036         u16 handle;
4037
4038         if (ioc->logging_level & MPT_DEBUG_SCSI)
4039                 scsi_print_command(scmd);
4040
4041         sas_device_priv_data = scmd->device->hostdata;
4042         if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
4043                 scmd->result = DID_NO_CONNECT << 16;
4044                 scmd->scsi_done(scmd);
4045                 return 0;
4046         }
4047
4048         if (ioc->pci_error_recovery || ioc->remove_host) {
4049                 scmd->result = DID_NO_CONNECT << 16;
4050                 scmd->scsi_done(scmd);
4051                 return 0;
4052         }
4053
4054         sas_target_priv_data = sas_device_priv_data->sas_target;
4055
4056         /* invalid device handle */
4057         handle = sas_target_priv_data->handle;
4058         if (handle == MPT3SAS_INVALID_DEVICE_HANDLE) {
4059                 scmd->result = DID_NO_CONNECT << 16;
4060                 scmd->scsi_done(scmd);
4061                 return 0;
4062         }
4063
4064
4065         /* host recovery or link resets sent via IOCTLs */
4066         if (ioc->shost_recovery || ioc->ioc_link_reset_in_progress)
4067                 return SCSI_MLQUEUE_HOST_BUSY;
4068
4069         /* device has been deleted */
4070         else if (sas_target_priv_data->deleted) {
4071                 scmd->result = DID_NO_CONNECT << 16;
4072                 scmd->scsi_done(scmd);
4073                 return 0;
4074         /* device busy with task managment */
4075         } else if (sas_target_priv_data->tm_busy ||
4076             sas_device_priv_data->block)
4077                 return SCSI_MLQUEUE_DEVICE_BUSY;
4078
4079         if (scmd->sc_data_direction == DMA_FROM_DEVICE)
4080                 mpi_control = MPI2_SCSIIO_CONTROL_READ;
4081         else if (scmd->sc_data_direction == DMA_TO_DEVICE)
4082                 mpi_control = MPI2_SCSIIO_CONTROL_WRITE;
4083         else
4084                 mpi_control = MPI2_SCSIIO_CONTROL_NODATATRANSFER;
4085
4086         /* set tags */
4087         mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
4088
4089         /* Make sure Device is not raid volume.
4090          * We do not expose raid functionality to upper layer for warpdrive.
4091          */
4092         if (!ioc->is_warpdrive && !scsih_is_raid(&scmd->device->sdev_gendev)
4093             && sas_is_tlr_enabled(scmd->device) && scmd->cmd_len != 32)
4094                 mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
4095
4096         smid = mpt3sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);
4097         if (!smid) {
4098                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4099                     ioc->name, __func__);
4100                 goto out;
4101         }
4102         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4103         memset(mpi_request, 0, sizeof(Mpi2SCSIIORequest_t));
4104         _scsih_setup_eedp(ioc, scmd, mpi_request);
4105
4106         if (scmd->cmd_len == 32)
4107                 mpi_control |= 4 << MPI2_SCSIIO_CONTROL_ADDCDBLEN_SHIFT;
4108         mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4109         if (sas_device_priv_data->sas_target->flags &
4110             MPT_TARGET_FLAGS_RAID_COMPONENT)
4111                 mpi_request->Function = MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
4112         else
4113                 mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4114         mpi_request->DevHandle = cpu_to_le16(handle);
4115         mpi_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
4116         mpi_request->Control = cpu_to_le32(mpi_control);
4117         mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len);
4118         mpi_request->MsgFlags = MPI2_SCSIIO_MSGFLAGS_SYSTEM_SENSE_ADDR;
4119         mpi_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
4120         mpi_request->SenseBufferLowAddress =
4121             mpt3sas_base_get_sense_buffer_dma(ioc, smid);
4122         mpi_request->SGLOffset0 = offsetof(Mpi2SCSIIORequest_t, SGL) / 4;
4123         int_to_scsilun(sas_device_priv_data->lun, (struct scsi_lun *)
4124             mpi_request->LUN);
4125         memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4126
4127         if (mpi_request->DataLength) {
4128                 if (ioc->build_sg_scmd(ioc, scmd, smid)) {
4129                         mpt3sas_base_free_smid(ioc, smid);
4130                         goto out;
4131                 }
4132         } else
4133                 ioc->build_zero_len_sge(ioc, &mpi_request->SGL);
4134
4135         raid_device = sas_target_priv_data->raid_device;
4136         if (raid_device && raid_device->direct_io_enabled)
4137                 mpt3sas_setup_direct_io(ioc, scmd, raid_device, mpi_request,
4138                     smid);
4139
4140         if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)) {
4141                 if (sas_target_priv_data->flags & MPT_TARGET_FASTPATH_IO) {
4142                         mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len |
4143                             MPI25_SCSIIO_IOFLAGS_FAST_PATH);
4144                         mpt3sas_base_put_smid_fast_path(ioc, smid, handle);
4145                 } else
4146                         mpt3sas_base_put_smid_scsi_io(ioc, smid,
4147                             le16_to_cpu(mpi_request->DevHandle));
4148         } else
4149                 mpt3sas_base_put_smid_default(ioc, smid);
4150         return 0;
4151
4152  out:
4153         return SCSI_MLQUEUE_HOST_BUSY;
4154 }
4155
4156 /**
4157  * _scsih_normalize_sense - normalize descriptor and fixed format sense data
4158  * @sense_buffer: sense data returned by target
4159  * @data: normalized skey/asc/ascq
4160  *
4161  * Return nothing.
4162  */
4163 static void
4164 _scsih_normalize_sense(char *sense_buffer, struct sense_info *data)
4165 {
4166         if ((sense_buffer[0] & 0x7F) >= 0x72) {
4167                 /* descriptor format */
4168                 data->skey = sense_buffer[1] & 0x0F;
4169                 data->asc = sense_buffer[2];
4170                 data->ascq = sense_buffer[3];
4171         } else {
4172                 /* fixed format */
4173                 data->skey = sense_buffer[2] & 0x0F;
4174                 data->asc = sense_buffer[12];
4175                 data->ascq = sense_buffer[13];
4176         }
4177 }
4178
4179 /**
4180  * _scsih_scsi_ioc_info - translated non-succesfull SCSI_IO request
4181  * @ioc: per adapter object
4182  * @scmd: pointer to scsi command object
4183  * @mpi_reply: reply mf payload returned from firmware
4184  *
4185  * scsi_status - SCSI Status code returned from target device
4186  * scsi_state - state info associated with SCSI_IO determined by ioc
4187  * ioc_status - ioc supplied status info
4188  *
4189  * Return nothing.
4190  */
4191 static void
4192 _scsih_scsi_ioc_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
4193         Mpi2SCSIIOReply_t *mpi_reply, u16 smid)
4194 {
4195         u32 response_info;
4196         u8 *response_bytes;
4197         u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
4198             MPI2_IOCSTATUS_MASK;
4199         u8 scsi_state = mpi_reply->SCSIState;
4200         u8 scsi_status = mpi_reply->SCSIStatus;
4201         char *desc_ioc_state = NULL;
4202         char *desc_scsi_status = NULL;
4203         char *desc_scsi_state = ioc->tmp_string;
4204         u32 log_info = le32_to_cpu(mpi_reply->IOCLogInfo);
4205         struct _sas_device *sas_device = NULL;
4206         struct scsi_target *starget = scmd->device->sdev_target;
4207         struct MPT3SAS_TARGET *priv_target = starget->hostdata;
4208         char *device_str = NULL;
4209
4210         if (!priv_target)
4211                 return;
4212         if (ioc->hide_ir_msg)
4213                 device_str = "WarpDrive";
4214         else
4215                 device_str = "volume";
4216
4217         if (log_info == 0x31170000)
4218                 return;
4219
4220         switch (ioc_status) {
4221         case MPI2_IOCSTATUS_SUCCESS:
4222                 desc_ioc_state = "success";
4223                 break;
4224         case MPI2_IOCSTATUS_INVALID_FUNCTION:
4225                 desc_ioc_state = "invalid function";
4226                 break;
4227         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4228                 desc_ioc_state = "scsi recovered error";
4229                 break;
4230         case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
4231                 desc_ioc_state = "scsi invalid dev handle";
4232                 break;
4233         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4234                 desc_ioc_state = "scsi device not there";
4235                 break;
4236         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4237                 desc_ioc_state = "scsi data overrun";
4238                 break;
4239         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4240                 desc_ioc_state = "scsi data underrun";
4241                 break;
4242         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4243                 desc_ioc_state = "scsi io data error";
4244                 break;
4245         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4246                 desc_ioc_state = "scsi protocol error";
4247                 break;
4248         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4249                 desc_ioc_state = "scsi task terminated";
4250                 break;
4251         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4252                 desc_ioc_state = "scsi residual mismatch";
4253                 break;
4254         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4255                 desc_ioc_state = "scsi task mgmt failed";
4256                 break;
4257         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4258                 desc_ioc_state = "scsi ioc terminated";
4259                 break;
4260         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4261                 desc_ioc_state = "scsi ext terminated";
4262                 break;
4263         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4264                 desc_ioc_state = "eedp guard error";
4265                 break;
4266         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4267                 desc_ioc_state = "eedp ref tag error";
4268                 break;
4269         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4270                 desc_ioc_state = "eedp app tag error";
4271                 break;
4272         case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4273                 desc_ioc_state = "insufficient power";
4274                 break;
4275         default:
4276                 desc_ioc_state = "unknown";
4277                 break;
4278         }
4279
4280         switch (scsi_status) {
4281         case MPI2_SCSI_STATUS_GOOD:
4282                 desc_scsi_status = "good";
4283                 break;
4284         case MPI2_SCSI_STATUS_CHECK_CONDITION:
4285                 desc_scsi_status = "check condition";
4286                 break;
4287         case MPI2_SCSI_STATUS_CONDITION_MET:
4288                 desc_scsi_status = "condition met";
4289                 break;
4290         case MPI2_SCSI_STATUS_BUSY:
4291                 desc_scsi_status = "busy";
4292                 break;
4293         case MPI2_SCSI_STATUS_INTERMEDIATE:
4294                 desc_scsi_status = "intermediate";
4295                 break;
4296         case MPI2_SCSI_STATUS_INTERMEDIATE_CONDMET:
4297                 desc_scsi_status = "intermediate condmet";
4298                 break;
4299         case MPI2_SCSI_STATUS_RESERVATION_CONFLICT:
4300                 desc_scsi_status = "reservation conflict";
4301                 break;
4302         case MPI2_SCSI_STATUS_COMMAND_TERMINATED:
4303                 desc_scsi_status = "command terminated";
4304                 break;
4305         case MPI2_SCSI_STATUS_TASK_SET_FULL:
4306                 desc_scsi_status = "task set full";
4307                 break;
4308         case MPI2_SCSI_STATUS_ACA_ACTIVE:
4309                 desc_scsi_status = "aca active";
4310                 break;
4311         case MPI2_SCSI_STATUS_TASK_ABORTED:
4312                 desc_scsi_status = "task aborted";
4313                 break;
4314         default:
4315                 desc_scsi_status = "unknown";
4316                 break;
4317         }
4318
4319         desc_scsi_state[0] = '\0';
4320         if (!scsi_state)
4321                 desc_scsi_state = " ";
4322         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4323                 strcat(desc_scsi_state, "response info ");
4324         if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4325                 strcat(desc_scsi_state, "state terminated ");
4326         if (scsi_state & MPI2_SCSI_STATE_NO_SCSI_STATUS)
4327                 strcat(desc_scsi_state, "no status ");
4328         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_FAILED)
4329                 strcat(desc_scsi_state, "autosense failed ");
4330         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID)
4331                 strcat(desc_scsi_state, "autosense valid ");
4332
4333         scsi_print_command(scmd);
4334
4335         if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
4336                 pr_warn(MPT3SAS_FMT "\t%s wwid(0x%016llx)\n", ioc->name,
4337                     device_str, (unsigned long long)priv_target->sas_address);
4338         } else {
4339                 sas_device = mpt3sas_get_sdev_from_target(ioc, priv_target);
4340                 if (sas_device) {
4341                         pr_warn(MPT3SAS_FMT
4342                                 "\tsas_address(0x%016llx), phy(%d)\n",
4343                                 ioc->name, (unsigned long long)
4344                             sas_device->sas_address, sas_device->phy);
4345                         if (sas_device->enclosure_handle != 0)
4346                                 pr_warn(MPT3SAS_FMT
4347                                   "\tenclosure_logical_id(0x%016llx),"
4348                                   "slot(%d)\n", ioc->name,
4349                                   (unsigned long long)
4350                                   sas_device->enclosure_logical_id,
4351                                   sas_device->slot);
4352                         if (sas_device->connector_name[0])
4353                                 pr_warn(MPT3SAS_FMT
4354                                   "\tenclosure level(0x%04x),"
4355                                   " connector name( %s)\n", ioc->name,
4356                                   sas_device->enclosure_level,
4357                                   sas_device->connector_name);
4358
4359                         sas_device_put(sas_device);
4360                 }
4361         }
4362
4363         pr_warn(MPT3SAS_FMT
4364                 "\thandle(0x%04x), ioc_status(%s)(0x%04x), smid(%d)\n",
4365                 ioc->name, le16_to_cpu(mpi_reply->DevHandle),
4366             desc_ioc_state, ioc_status, smid);
4367         pr_warn(MPT3SAS_FMT
4368                 "\trequest_len(%d), underflow(%d), resid(%d)\n",
4369                 ioc->name, scsi_bufflen(scmd), scmd->underflow,
4370             scsi_get_resid(scmd));
4371         pr_warn(MPT3SAS_FMT
4372                 "\ttag(%d), transfer_count(%d), sc->result(0x%08x)\n",
4373                 ioc->name, le16_to_cpu(mpi_reply->TaskTag),
4374             le32_to_cpu(mpi_reply->TransferCount), scmd->result);
4375         pr_warn(MPT3SAS_FMT
4376                 "\tscsi_status(%s)(0x%02x), scsi_state(%s)(0x%02x)\n",
4377                 ioc->name, desc_scsi_status,
4378             scsi_status, desc_scsi_state, scsi_state);
4379
4380         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4381                 struct sense_info data;
4382                 _scsih_normalize_sense(scmd->sense_buffer, &data);
4383                 pr_warn(MPT3SAS_FMT
4384                         "\t[sense_key,asc,ascq]: [0x%02x,0x%02x,0x%02x], count(%d)\n",
4385                         ioc->name, data.skey,
4386                     data.asc, data.ascq, le32_to_cpu(mpi_reply->SenseCount));
4387         }
4388
4389         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID) {
4390                 response_info = le32_to_cpu(mpi_reply->ResponseInfo);
4391                 response_bytes = (u8 *)&response_info;
4392                 _scsih_response_code(ioc, response_bytes[0]);
4393         }
4394 }
4395
4396 /**
4397  * _scsih_turn_on_pfa_led - illuminate PFA LED
4398  * @ioc: per adapter object
4399  * @handle: device handle
4400  * Context: process
4401  *
4402  * Return nothing.
4403  */
4404 static void
4405 _scsih_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4406 {
4407         Mpi2SepReply_t mpi_reply;
4408         Mpi2SepRequest_t mpi_request;
4409         struct _sas_device *sas_device;
4410
4411         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
4412         if (!sas_device)
4413                 return;
4414
4415         memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4416         mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4417         mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4418         mpi_request.SlotStatus =
4419             cpu_to_le32(MPI2_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
4420         mpi_request.DevHandle = cpu_to_le16(handle);
4421         mpi_request.Flags = MPI2_SEP_REQ_FLAGS_DEVHANDLE_ADDRESS;
4422         if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4423             &mpi_request)) != 0) {
4424                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4425                 __FILE__, __LINE__, __func__);
4426                 goto out;
4427         }
4428         sas_device->pfa_led_on = 1;
4429
4430         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4431                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
4432                         "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4433                         ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4434                     le32_to_cpu(mpi_reply.IOCLogInfo)));
4435                 goto out;
4436         }
4437 out:
4438         sas_device_put(sas_device);
4439 }
4440
4441 /**
4442  * _scsih_turn_off_pfa_led - turn off Fault LED
4443  * @ioc: per adapter object
4444  * @sas_device: sas device whose PFA LED has to turned off
4445  * Context: process
4446  *
4447  * Return nothing.
4448  */
4449 static void
4450 _scsih_turn_off_pfa_led(struct MPT3SAS_ADAPTER *ioc,
4451         struct _sas_device *sas_device)
4452 {
4453         Mpi2SepReply_t mpi_reply;
4454         Mpi2SepRequest_t mpi_request;
4455
4456         memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4457         mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4458         mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4459         mpi_request.SlotStatus = 0;
4460         mpi_request.Slot = cpu_to_le16(sas_device->slot);
4461         mpi_request.DevHandle = 0;
4462         mpi_request.EnclosureHandle = cpu_to_le16(sas_device->enclosure_handle);
4463         mpi_request.Flags = MPI2_SEP_REQ_FLAGS_ENCLOSURE_SLOT_ADDRESS;
4464         if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4465                 &mpi_request)) != 0) {
4466                 printk(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4467                 __FILE__, __LINE__, __func__);
4468                 return;
4469         }
4470
4471         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4472                 dewtprintk(ioc, printk(MPT3SAS_FMT
4473                  "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4474                  ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4475                  le32_to_cpu(mpi_reply.IOCLogInfo)));
4476                 return;
4477         }
4478 }
4479
4480 /**
4481  * _scsih_send_event_to_turn_on_pfa_led - fire delayed event
4482  * @ioc: per adapter object
4483  * @handle: device handle
4484  * Context: interrupt.
4485  *
4486  * Return nothing.
4487  */
4488 static void
4489 _scsih_send_event_to_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4490 {
4491         struct fw_event_work *fw_event;
4492
4493         fw_event = alloc_fw_event_work(0);
4494         if (!fw_event)
4495                 return;
4496         fw_event->event = MPT3SAS_TURN_ON_PFA_LED;
4497         fw_event->device_handle = handle;
4498         fw_event->ioc = ioc;
4499         _scsih_fw_event_add(ioc, fw_event);
4500         fw_event_work_put(fw_event);
4501 }
4502
4503 /**
4504  * _scsih_smart_predicted_fault - process smart errors
4505  * @ioc: per adapter object
4506  * @handle: device handle
4507  * Context: interrupt.
4508  *
4509  * Return nothing.
4510  */
4511 static void
4512 _scsih_smart_predicted_fault(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4513 {
4514         struct scsi_target *starget;
4515         struct MPT3SAS_TARGET *sas_target_priv_data;
4516         Mpi2EventNotificationReply_t *event_reply;
4517         Mpi2EventDataSasDeviceStatusChange_t *event_data;
4518         struct _sas_device *sas_device;
4519         ssize_t sz;
4520         unsigned long flags;
4521
4522         /* only handle non-raid devices */
4523         spin_lock_irqsave(&ioc->sas_device_lock, flags);
4524         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
4525         if (!sas_device)
4526                 goto out_unlock;
4527
4528         starget = sas_device->starget;
4529         sas_target_priv_data = starget->hostdata;
4530
4531         if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) ||
4532            ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)))
4533                 goto out_unlock;
4534
4535         if (sas_device->enclosure_handle != 0)
4536                 starget_printk(KERN_INFO, starget, "predicted fault, "
4537                         "enclosure logical id(0x%016llx), slot(%d)\n",
4538                         (unsigned long long)sas_device->enclosure_logical_id,
4539                         sas_device->slot);
4540         if (sas_device->connector_name[0] != '\0')
4541                 starget_printk(KERN_WARNING, starget, "predicted fault, "
4542                         "enclosure level(0x%04x), connector name( %s)\n",
4543                         sas_device->enclosure_level,
4544                         sas_device->connector_name);
4545         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4546
4547         if (ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
4548                 _scsih_send_event_to_turn_on_pfa_led(ioc, handle);
4549
4550         /* insert into event log */
4551         sz = offsetof(Mpi2EventNotificationReply_t, EventData) +
4552              sizeof(Mpi2EventDataSasDeviceStatusChange_t);
4553         event_reply = kzalloc(sz, GFP_KERNEL);
4554         if (!event_reply) {
4555                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4556                     ioc->name, __FILE__, __LINE__, __func__);
4557                 goto out;
4558         }
4559
4560         event_reply->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
4561         event_reply->Event =
4562             cpu_to_le16(MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4563         event_reply->MsgLength = sz/4;
4564         event_reply->EventDataLength =
4565             cpu_to_le16(sizeof(Mpi2EventDataSasDeviceStatusChange_t)/4);
4566         event_data = (Mpi2EventDataSasDeviceStatusChange_t *)
4567             event_reply->EventData;
4568         event_data->ReasonCode = MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA;
4569         event_data->ASC = 0x5D;
4570         event_data->DevHandle = cpu_to_le16(handle);
4571         event_data->SASAddress = cpu_to_le64(sas_target_priv_data->sas_address);
4572         mpt3sas_ctl_add_to_event_log(ioc, event_reply);
4573         kfree(event_reply);
4574 out:
4575         if (sas_device)
4576                 sas_device_put(sas_device);
4577         return;
4578
4579 out_unlock:
4580         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4581         goto out;
4582 }
4583
4584 /**
4585  * _scsih_io_done - scsi request callback
4586  * @ioc: per adapter object
4587  * @smid: system request message index
4588  * @msix_index: MSIX table index supplied by the OS
4589  * @reply: reply message frame(lower 32bit addr)
4590  *
4591  * Callback handler when using _scsih_qcmd.
4592  *
4593  * Return 1 meaning mf should be freed from _base_interrupt
4594  *        0 means the mf is freed from this function.
4595  */
4596 static u8
4597 _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
4598 {
4599         Mpi2SCSIIORequest_t *mpi_request;
4600         Mpi2SCSIIOReply_t *mpi_reply;
4601         struct scsi_cmnd *scmd;
4602         u16 ioc_status;
4603         u32 xfer_cnt;
4604         u8 scsi_state;
4605         u8 scsi_status;
4606         u32 log_info;
4607         struct MPT3SAS_DEVICE *sas_device_priv_data;
4608         u32 response_code = 0;
4609         unsigned long flags;
4610
4611         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
4612         scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
4613         if (scmd == NULL)
4614                 return 1;
4615
4616         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4617
4618         if (mpi_reply == NULL) {
4619                 scmd->result = DID_OK << 16;
4620                 goto out;
4621         }
4622
4623         sas_device_priv_data = scmd->device->hostdata;
4624         if (!sas_device_priv_data || !sas_device_priv_data->sas_target ||
4625              sas_device_priv_data->sas_target->deleted) {
4626                 scmd->result = DID_NO_CONNECT << 16;
4627                 goto out;
4628         }
4629         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
4630
4631         /*
4632          * WARPDRIVE: If direct_io is set then it is directIO,
4633          * the failed direct I/O should be redirected to volume
4634          */
4635         if (mpt3sas_scsi_direct_io_get(ioc, smid) &&
4636              ((ioc_status & MPI2_IOCSTATUS_MASK)
4637               != MPI2_IOCSTATUS_SCSI_TASK_TERMINATED)) {
4638                 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4639                 ioc->scsi_lookup[smid - 1].scmd = scmd;
4640                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4641                 mpt3sas_scsi_direct_io_set(ioc, smid, 0);
4642                 memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4643                 mpi_request->DevHandle =
4644                     cpu_to_le16(sas_device_priv_data->sas_target->handle);
4645                 mpt3sas_base_put_smid_scsi_io(ioc, smid,
4646                     sas_device_priv_data->sas_target->handle);
4647                 return 0;
4648         }
4649         /* turning off TLR */
4650         scsi_state = mpi_reply->SCSIState;
4651         if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4652                 response_code =
4653                     le32_to_cpu(mpi_reply->ResponseInfo) & 0xFF;
4654         if (!sas_device_priv_data->tlr_snoop_check) {
4655                 sas_device_priv_data->tlr_snoop_check++;
4656                 if (!ioc->is_warpdrive &&
4657                     !scsih_is_raid(&scmd->device->sdev_gendev) &&
4658                     sas_is_tlr_enabled(scmd->device) &&
4659                     response_code == MPI2_SCSITASKMGMT_RSP_INVALID_FRAME) {
4660                         sas_disable_tlr(scmd->device);
4661                         sdev_printk(KERN_INFO, scmd->device, "TLR disabled\n");
4662                 }
4663         }
4664
4665         xfer_cnt = le32_to_cpu(mpi_reply->TransferCount);
4666         scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_cnt);
4667         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
4668                 log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
4669         else
4670                 log_info = 0;
4671         ioc_status &= MPI2_IOCSTATUS_MASK;
4672         scsi_status = mpi_reply->SCSIStatus;
4673
4674         if (ioc_status == MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
4675             (scsi_status == MPI2_SCSI_STATUS_BUSY ||
4676              scsi_status == MPI2_SCSI_STATUS_RESERVATION_CONFLICT ||
4677              scsi_status == MPI2_SCSI_STATUS_TASK_SET_FULL)) {
4678                 ioc_status = MPI2_IOCSTATUS_SUCCESS;
4679         }
4680
4681         if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4682                 struct sense_info data;
4683                 const void *sense_data = mpt3sas_base_get_sense_buffer(ioc,
4684                     smid);
4685                 u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
4686                     le32_to_cpu(mpi_reply->SenseCount));
4687                 memcpy(scmd->sense_buffer, sense_data, sz);
4688                 _scsih_normalize_sense(scmd->sense_buffer, &data);
4689                 /* failure prediction threshold exceeded */
4690                 if (data.asc == 0x5D)
4691                         _scsih_smart_predicted_fault(ioc,
4692                             le16_to_cpu(mpi_reply->DevHandle));
4693                 mpt3sas_trigger_scsi(ioc, data.skey, data.asc, data.ascq);
4694
4695                 if ((ioc->logging_level & MPT_DEBUG_REPLY) &&
4696                      ((scmd->sense_buffer[2] == UNIT_ATTENTION) ||
4697                      (scmd->sense_buffer[2] == MEDIUM_ERROR) ||
4698                      (scmd->sense_buffer[2] == HARDWARE_ERROR)))
4699                         _scsih_scsi_ioc_info(ioc, scmd, mpi_reply, smid);
4700         }
4701         switch (ioc_status) {
4702         case MPI2_IOCSTATUS_BUSY:
4703         case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
4704                 scmd->result = SAM_STAT_BUSY;
4705                 break;
4706
4707         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4708                 scmd->result = DID_NO_CONNECT << 16;
4709                 break;
4710
4711         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4712                 if (sas_device_priv_data->block) {
4713                         scmd->result = DID_TRANSPORT_DISRUPTED << 16;
4714                         goto out;
4715                 }
4716                 if (log_info == 0x31110630) {
4717                         if (scmd->retries > 2) {
4718                                 scmd->result = DID_NO_CONNECT << 16;
4719                                 scsi_device_set_state(scmd->device,
4720                                     SDEV_OFFLINE);
4721                         } else {
4722                                 scmd->result = DID_SOFT_ERROR << 16;
4723                                 scmd->device->expecting_cc_ua = 1;
4724                         }
4725                         break;
4726                 } else if (log_info == VIRTUAL_IO_FAILED_RETRY) {
4727                         scmd->result = DID_RESET << 16;
4728                         break;
4729                 }
4730                 scmd->result = DID_SOFT_ERROR << 16;
4731                 break;
4732         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4733         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4734                 scmd->result = DID_RESET << 16;
4735                 break;
4736
4737         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4738                 if ((xfer_cnt == 0) || (scmd->underflow > xfer_cnt))
4739                         scmd->result = DID_SOFT_ERROR << 16;
4740                 else
4741                         scmd->result = (DID_OK << 16) | scsi_status;
4742                 break;
4743
4744         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4745                 scmd->result = (DID_OK << 16) | scsi_status;
4746
4747                 if ((scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID))
4748                         break;
4749
4750                 if (xfer_cnt < scmd->underflow) {
4751                         if (scsi_status == SAM_STAT_BUSY)
4752                                 scmd->result = SAM_STAT_BUSY;
4753                         else
4754                                 scmd->result = DID_SOFT_ERROR << 16;
4755                 } else if (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4756                      MPI2_SCSI_STATE_NO_SCSI_STATUS))
4757                         scmd->result = DID_SOFT_ERROR << 16;
4758                 else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4759                         scmd->result = DID_RESET << 16;
4760                 else if (!xfer_cnt && scmd->cmnd[0] == REPORT_LUNS) {
4761                         mpi_reply->SCSIState = MPI2_SCSI_STATE_AUTOSENSE_VALID;
4762                         mpi_reply->SCSIStatus = SAM_STAT_CHECK_CONDITION;
4763                         scmd->result = (DRIVER_SENSE << 24) |
4764                             SAM_STAT_CHECK_CONDITION;
4765                         scmd->sense_buffer[0] = 0x70;
4766                         scmd->sense_buffer[2] = ILLEGAL_REQUEST;
4767                         scmd->sense_buffer[12] = 0x20;
4768                         scmd->sense_buffer[13] = 0;
4769                 }
4770                 break;
4771
4772         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4773                 scsi_set_resid(scmd, 0);
4774         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4775         case MPI2_IOCSTATUS_SUCCESS:
4776                 scmd->result = (DID_OK << 16) | scsi_status;
4777                 if (response_code ==
4778                     MPI2_SCSITASKMGMT_RSP_INVALID_FRAME ||
4779                     (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4780                      MPI2_SCSI_STATE_NO_SCSI_STATUS)))
4781                         scmd->result = DID_SOFT_ERROR << 16;
4782                 else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4783                         scmd->result = DID_RESET << 16;
4784                 break;
4785
4786         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4787         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4788         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4789                 _scsih_eedp_error_handling(scmd, ioc_status);
4790                 break;
4791
4792         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4793         case MPI2_IOCSTATUS_INVALID_FUNCTION:
4794         case MPI2_IOCSTATUS_INVALID_SGL:
4795         case MPI2_IOCSTATUS_INTERNAL_ERROR:
4796         case MPI2_IOCSTATUS_INVALID_FIELD:
4797         case MPI2_IOCSTATUS_INVALID_STATE:
4798         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4799         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4800         case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4801         default:
4802                 scmd->result = DID_SOFT_ERROR << 16;
4803                 break;
4804
4805         }
4806
4807         if (scmd->result && (ioc->logging_level & MPT_DEBUG_REPLY))
4808                 _scsih_scsi_ioc_info(ioc , scmd, mpi_reply, smid);
4809
4810  out:
4811
4812         scsi_dma_unmap(scmd);
4813
4814         scmd->scsi_done(scmd);
4815         return 1;
4816 }
4817
4818 /**
4819  * _scsih_sas_host_refresh - refreshing sas host object contents
4820  * @ioc: per adapter object
4821  * Context: user
4822  *
4823  * During port enable, fw will send topology events for every device. Its
4824  * possible that the handles may change from the previous setting, so this
4825  * code keeping handles updating if changed.
4826  *
4827  * Return nothing.
4828  */
4829 static void
4830 _scsih_sas_host_refresh(struct MPT3SAS_ADAPTER *ioc)
4831 {
4832         u16 sz;
4833         u16 ioc_status;
4834         int i;
4835         Mpi2ConfigReply_t mpi_reply;
4836         Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4837         u16 attached_handle;
4838         u8 link_rate;
4839
4840         dtmprintk(ioc, pr_info(MPT3SAS_FMT
4841             "updating handles for sas_host(0x%016llx)\n",
4842             ioc->name, (unsigned long long)ioc->sas_hba.sas_address));
4843
4844         sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys
4845             * sizeof(Mpi2SasIOUnit0PhyData_t));
4846         sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4847         if (!sas_iounit_pg0) {
4848                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4849                     ioc->name, __FILE__, __LINE__, __func__);
4850                 return;
4851         }
4852
4853         if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
4854             sas_iounit_pg0, sz)) != 0)
4855                 goto out;
4856         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
4857         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
4858                 goto out;
4859         for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
4860                 link_rate = sas_iounit_pg0->PhyData[i].NegotiatedLinkRate >> 4;
4861                 if (i == 0)
4862                         ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
4863                             PhyData[0].ControllerDevHandle);
4864                 ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
4865                 attached_handle = le16_to_cpu(sas_iounit_pg0->PhyData[i].
4866                     AttachedDevHandle);
4867                 if (attached_handle && link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
4868                         link_rate = MPI2_SAS_NEG_LINK_RATE_1_5;
4869                 mpt3sas_transport_update_links(ioc, ioc->sas_hba.sas_address,
4870                     attached_handle, i, link_rate);
4871         }
4872  out:
4873         kfree(sas_iounit_pg0);
4874 }
4875
4876 /**
4877  * _scsih_sas_host_add - create sas host object
4878  * @ioc: per adapter object
4879  *
4880  * Creating host side data object, stored in ioc->sas_hba
4881  *
4882  * Return nothing.
4883  */
4884 static void
4885 _scsih_sas_host_add(struct MPT3SAS_ADAPTER *ioc)
4886 {
4887         int i;
4888         Mpi2ConfigReply_t mpi_reply;
4889         Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4890         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
4891         Mpi2SasPhyPage0_t phy_pg0;
4892         Mpi2SasDevicePage0_t sas_device_pg0;
4893         Mpi2SasEnclosurePage0_t enclosure_pg0;
4894         u16 ioc_status;
4895         u16 sz;
4896         u8 device_missing_delay;
4897         u8 num_phys;
4898
4899         mpt3sas_config_get_number_hba_phys(ioc, &num_phys);
4900         if (!num_phys) {
4901                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4902                     ioc->name, __FILE__, __LINE__, __func__);
4903                 return;
4904         }
4905         ioc->sas_hba.phy = kcalloc(num_phys,
4906             sizeof(struct _sas_phy), GFP_KERNEL);
4907         if (!ioc->sas_hba.phy) {
4908                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4909                     ioc->name, __FILE__, __LINE__, __func__);
4910                 goto out;
4911         }
4912         ioc->sas_hba.num_phys = num_phys;
4913
4914         /* sas_iounit page 0 */
4915         sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
4916             sizeof(Mpi2SasIOUnit0PhyData_t));
4917         sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4918         if (!sas_iounit_pg0) {
4919                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4920                     ioc->name, __FILE__, __LINE__, __func__);
4921                 return;
4922         }
4923         if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
4924             sas_iounit_pg0, sz))) {
4925                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4926                     ioc->name, __FILE__, __LINE__, __func__);
4927                 goto out;
4928         }
4929         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
4930             MPI2_IOCSTATUS_MASK;
4931         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
4932                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4933                     ioc->name, __FILE__, __LINE__, __func__);
4934                 goto out;
4935         }
4936
4937         /* sas_iounit page 1 */
4938         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
4939             sizeof(Mpi2SasIOUnit1PhyData_t));
4940         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
4941         if (!sas_iounit_pg1) {
4942                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4943                     ioc->name, __FILE__, __LINE__, __func__);
4944                 goto out;
4945         }
4946         if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
4947             sas_iounit_pg1, sz))) {
4948                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4949                     ioc->name, __FILE__, __LINE__, __func__);
4950                 goto out;
4951         }
4952         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
4953             MPI2_IOCSTATUS_MASK;
4954         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
4955                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4956                     ioc->name, __FILE__, __LINE__, __func__);
4957                 goto out;
4958         }
4959
4960         ioc->io_missing_delay =
4961             sas_iounit_pg1->IODeviceMissingDelay;
4962         device_missing_delay =
4963             sas_iounit_pg1->ReportDeviceMissingDelay;
4964         if (device_missing_delay & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
4965                 ioc->device_missing_delay = (device_missing_delay &
4966                     MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
4967         else
4968                 ioc->device_missing_delay = device_missing_delay &
4969                     MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
4970
4971         ioc->sas_hba.parent_dev = &ioc->shost->shost_gendev;
4972         for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
4973                 if ((mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
4974                     i))) {
4975                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4976                             ioc->name, __FILE__, __LINE__, __func__);
4977                         goto out;
4978                 }
4979                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
4980                     MPI2_IOCSTATUS_MASK;
4981                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
4982                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4983                             ioc->name, __FILE__, __LINE__, __func__);
4984                         goto out;
4985                 }
4986
4987                 if (i == 0)
4988                         ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
4989                             PhyData[0].ControllerDevHandle);
4990                 ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
4991                 ioc->sas_hba.phy[i].phy_id = i;
4992                 mpt3sas_transport_add_host_phy(ioc, &ioc->sas_hba.phy[i],
4993                     phy_pg0, ioc->sas_hba.parent_dev);
4994         }
4995         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
4996             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, ioc->sas_hba.handle))) {
4997                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4998                     ioc->name, __FILE__, __LINE__, __func__);
4999                 goto out;
5000         }
5001         ioc->sas_hba.enclosure_handle =
5002             le16_to_cpu(sas_device_pg0.EnclosureHandle);
5003         ioc->sas_hba.sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5004         pr_info(MPT3SAS_FMT
5005                 "host_add: handle(0x%04x), sas_addr(0x%016llx), phys(%d)\n",
5006                 ioc->name, ioc->sas_hba.handle,
5007             (unsigned long long) ioc->sas_hba.sas_address,
5008             ioc->sas_hba.num_phys) ;
5009
5010         if (ioc->sas_hba.enclosure_handle) {
5011                 if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5012                     &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5013                    ioc->sas_hba.enclosure_handle)))
5014                         ioc->sas_hba.enclosure_logical_id =
5015                             le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5016         }
5017
5018  out:
5019         kfree(sas_iounit_pg1);
5020         kfree(sas_iounit_pg0);
5021 }
5022
5023 /**
5024  * _scsih_expander_add -  creating expander object
5025  * @ioc: per adapter object
5026  * @handle: expander handle
5027  *
5028  * Creating expander object, stored in ioc->sas_expander_list.
5029  *
5030  * Return 0 for success, else error.
5031  */
5032 static int
5033 _scsih_expander_add(struct MPT3SAS_ADAPTER *ioc, u16 handle)
5034 {
5035         struct _sas_node *sas_expander;
5036         Mpi2ConfigReply_t mpi_reply;
5037         Mpi2ExpanderPage0_t expander_pg0;
5038         Mpi2ExpanderPage1_t expander_pg1;
5039         Mpi2SasEnclosurePage0_t enclosure_pg0;
5040         u32 ioc_status;
5041         u16 parent_handle;
5042         u64 sas_address, sas_address_parent = 0;
5043         int i;
5044         unsigned long flags;
5045         struct _sas_port *mpt3sas_port = NULL;
5046
5047         int rc = 0;
5048
5049         if (!handle)
5050                 return -1;
5051
5052         if (ioc->shost_recovery || ioc->pci_error_recovery)
5053                 return -1;
5054
5055         if ((mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
5056             MPI2_SAS_EXPAND_PGAD_FORM_HNDL, handle))) {
5057                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5058                     ioc->name, __FILE__, __LINE__, __func__);
5059                 return -1;
5060         }
5061
5062         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5063             MPI2_IOCSTATUS_MASK;
5064         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5065                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5066                     ioc->name, __FILE__, __LINE__, __func__);
5067                 return -1;
5068         }
5069
5070         /* handle out of order topology events */
5071         parent_handle = le16_to_cpu(expander_pg0.ParentDevHandle);
5072         if (_scsih_get_sas_address(ioc, parent_handle, &sas_address_parent)
5073             != 0) {
5074                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5075                     ioc->name, __FILE__, __LINE__, __func__);
5076                 return -1;
5077         }
5078         if (sas_address_parent != ioc->sas_hba.sas_address) {
5079                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
5080                 sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5081                     sas_address_parent);
5082                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5083                 if (!sas_expander) {
5084                         rc = _scsih_expander_add(ioc, parent_handle);
5085                         if (rc != 0)
5086                                 return rc;
5087                 }
5088         }
5089
5090         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5091         sas_address = le64_to_cpu(expander_pg0.SASAddress);
5092         sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5093             sas_address);
5094         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5095
5096         if (sas_expander)
5097                 return 0;
5098
5099         sas_expander = kzalloc(sizeof(struct _sas_node),
5100             GFP_KERNEL);
5101         if (!sas_expander) {
5102                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5103                     ioc->name, __FILE__, __LINE__, __func__);
5104                 return -1;
5105         }
5106
5107         sas_expander->handle = handle;
5108         sas_expander->num_phys = expander_pg0.NumPhys;
5109         sas_expander->sas_address_parent = sas_address_parent;
5110         sas_expander->sas_address = sas_address;
5111
5112         pr_info(MPT3SAS_FMT "expander_add: handle(0x%04x)," \
5113             " parent(0x%04x), sas_addr(0x%016llx), phys(%d)\n", ioc->name,
5114             handle, parent_handle, (unsigned long long)
5115             sas_expander->sas_address, sas_expander->num_phys);
5116
5117         if (!sas_expander->num_phys)
5118                 goto out_fail;
5119         sas_expander->phy = kcalloc(sas_expander->num_phys,
5120             sizeof(struct _sas_phy), GFP_KERNEL);
5121         if (!sas_expander->phy) {
5122                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5123                     ioc->name, __FILE__, __LINE__, __func__);
5124                 rc = -1;
5125                 goto out_fail;
5126         }
5127
5128         INIT_LIST_HEAD(&sas_expander->sas_port_list);
5129         mpt3sas_port = mpt3sas_transport_port_add(ioc, handle,
5130             sas_address_parent);
5131         if (!mpt3sas_port) {
5132                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5133                     ioc->name, __FILE__, __LINE__, __func__);
5134                 rc = -1;
5135                 goto out_fail;
5136         }
5137         sas_expander->parent_dev = &mpt3sas_port->rphy->dev;
5138
5139         for (i = 0 ; i < sas_expander->num_phys ; i++) {
5140                 if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
5141                     &expander_pg1, i, handle))) {
5142                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5143                             ioc->name, __FILE__, __LINE__, __func__);
5144                         rc = -1;
5145                         goto out_fail;
5146                 }
5147                 sas_expander->phy[i].handle = handle;
5148                 sas_expander->phy[i].phy_id = i;
5149
5150                 if ((mpt3sas_transport_add_expander_phy(ioc,
5151                     &sas_expander->phy[i], expander_pg1,
5152                     sas_expander->parent_dev))) {
5153                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5154                             ioc->name, __FILE__, __LINE__, __func__);
5155                         rc = -1;
5156                         goto out_fail;
5157                 }
5158         }
5159
5160         if (sas_expander->enclosure_handle) {
5161                 if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5162                     &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5163                    sas_expander->enclosure_handle)))
5164                         sas_expander->enclosure_logical_id =
5165                             le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5166         }
5167
5168         _scsih_expander_node_add(ioc, sas_expander);
5169          return 0;
5170
5171  out_fail:
5172
5173         if (mpt3sas_port)
5174                 mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
5175                     sas_address_parent);
5176         kfree(sas_expander);
5177         return rc;
5178 }
5179
5180 /**
5181  * mpt3sas_expander_remove - removing expander object
5182  * @ioc: per adapter object
5183  * @sas_address: expander sas_address
5184  *
5185  * Return nothing.
5186  */
5187 void
5188 mpt3sas_expander_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
5189 {
5190         struct _sas_node *sas_expander;
5191         unsigned long flags;
5192
5193         if (ioc->shost_recovery)
5194                 return;
5195
5196         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5197         sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5198             sas_address);
5199         if (sas_expander)
5200                 list_del(&sas_expander->list);
5201         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5202         if (sas_expander)
5203                 _scsih_expander_node_remove(ioc, sas_expander);
5204 }
5205
5206 /**
5207  * _scsih_done -  internal SCSI_IO callback handler.
5208  * @ioc: per adapter object
5209  * @smid: system request message index
5210  * @msix_index: MSIX table index supplied by the OS
5211  * @reply: reply message frame(lower 32bit addr)
5212  *
5213  * Callback handler when sending internal generated SCSI_IO.
5214  * The callback index passed is `ioc->scsih_cb_idx`
5215  *
5216  * Return 1 meaning mf should be freed from _base_interrupt
5217  *        0 means the mf is freed from this function.
5218  */
5219 static u8
5220 _scsih_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
5221 {
5222         MPI2DefaultReply_t *mpi_reply;
5223
5224         mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
5225         if (ioc->scsih_cmds.status == MPT3_CMD_NOT_USED)
5226                 return 1;
5227         if (ioc->scsih_cmds.smid != smid)
5228                 return 1;
5229         ioc->scsih_cmds.status |= MPT3_CMD_COMPLETE;
5230         if (mpi_reply) {
5231                 memcpy(ioc->scsih_cmds.reply, mpi_reply,
5232                     mpi_reply->MsgLength*4);
5233                 ioc->scsih_cmds.status |= MPT3_CMD_REPLY_VALID;
5234         }
5235         ioc->scsih_cmds.status &= ~MPT3_CMD_PENDING;
5236         complete(&ioc->scsih_cmds.done);
5237         return 1;
5238 }
5239
5240
5241
5242
5243 #define MPT3_MAX_LUNS (255)
5244
5245
5246 /**
5247  * _scsih_check_access_status - check access flags
5248  * @ioc: per adapter object
5249  * @sas_address: sas address
5250  * @handle: sas device handle
5251  * @access_flags: errors returned during discovery of the device
5252  *
5253  * Return 0 for success, else failure
5254  */
5255 static u8
5256 _scsih_check_access_status(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
5257         u16 handle, u8 access_status)
5258 {
5259         u8 rc = 1;
5260         char *desc = NULL;
5261
5262         switch (access_status) {
5263         case MPI2_SAS_DEVICE0_ASTATUS_NO_ERRORS:
5264         case MPI2_SAS_DEVICE0_ASTATUS_SATA_NEEDS_INITIALIZATION:
5265                 rc = 0;
5266                 break;
5267         case MPI2_SAS_DEVICE0_ASTATUS_SATA_CAPABILITY_FAILED:
5268                 desc = "sata capability failed";
5269                 break;
5270         case MPI2_SAS_DEVICE0_ASTATUS_SATA_AFFILIATION_CONFLICT:
5271                 desc = "sata affiliation conflict";
5272                 break;
5273         case MPI2_SAS_DEVICE0_ASTATUS_ROUTE_NOT_ADDRESSABLE:
5274                 desc = "route not addressable";
5275                 break;
5276         case MPI2_SAS_DEVICE0_ASTATUS_SMP_ERROR_NOT_ADDRESSABLE:
5277                 desc = "smp error not addressable";
5278                 break;
5279         case MPI2_SAS_DEVICE0_ASTATUS_DEVICE_BLOCKED:
5280                 desc = "device blocked";
5281                 break;
5282         case MPI2_SAS_DEVICE0_ASTATUS_SATA_INIT_FAILED:
5283         case MPI2_SAS_DEVICE0_ASTATUS_SIF_UNKNOWN:
5284         case MPI2_SAS_DEVICE0_ASTATUS_SIF_AFFILIATION_CONFLICT:
5285         case MPI2_SAS_DEVICE0_ASTATUS_SIF_DIAG:
5286         case MPI2_SAS_DEVICE0_ASTATUS_SIF_IDENTIFICATION:
5287         case MPI2_SAS_DEVICE0_ASTATUS_SIF_CHECK_POWER:
5288         case MPI2_SAS_DEVICE0_ASTATUS_SIF_PIO_SN:
5289         case MPI2_SAS_DEVICE0_ASTATUS_SIF_MDMA_SN:
5290         case MPI2_SAS_DEVICE0_ASTATUS_SIF_UDMA_SN:
5291         case MPI2_SAS_DEVICE0_ASTATUS_SIF_ZONING_VIOLATION:
5292         case MPI2_SAS_DEVICE0_ASTATUS_SIF_NOT_ADDRESSABLE:
5293         case MPI2_SAS_DEVICE0_ASTATUS_SIF_MAX:
5294                 desc = "sata initialization failed";
5295                 break;
5296         default:
5297                 desc = "unknown";
5298                 break;
5299         }
5300
5301         if (!rc)
5302                 return 0;
5303
5304         pr_err(MPT3SAS_FMT
5305                 "discovery errors(%s): sas_address(0x%016llx), handle(0x%04x)\n",
5306                 ioc->name, desc, (unsigned long long)sas_address, handle);
5307         return rc;
5308 }
5309
5310 /**
5311  * _scsih_check_device - checking device responsiveness
5312  * @ioc: per adapter object
5313  * @parent_sas_address: sas address of parent expander or sas host
5314  * @handle: attached device handle
5315  * @phy_numberv: phy number
5316  * @link_rate: new link rate
5317  *
5318  * Returns nothing.
5319  */
5320 static void
5321 _scsih_check_device(struct MPT3SAS_ADAPTER *ioc,
5322         u64 parent_sas_address, u16 handle, u8 phy_number, u8 link_rate)
5323 {
5324         Mpi2ConfigReply_t mpi_reply;
5325         Mpi2SasDevicePage0_t sas_device_pg0;
5326         struct _sas_device *sas_device;
5327         u32 ioc_status;
5328         unsigned long flags;
5329         u64 sas_address;
5330         struct scsi_target *starget;
5331         struct MPT3SAS_TARGET *sas_target_priv_data;
5332         u32 device_info;
5333
5334
5335         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5336             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle)))
5337                 return;
5338
5339         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
5340         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
5341                 return;
5342
5343         /* wide port handling ~ we need only handle device once for the phy that
5344          * is matched in sas device page zero
5345          */
5346         if (phy_number != sas_device_pg0.PhyNum)
5347                 return;
5348
5349         /* check if this is end device */
5350         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5351         if (!(_scsih_is_end_device(device_info)))
5352                 return;
5353
5354         spin_lock_irqsave(&ioc->sas_device_lock, flags);
5355         sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5356         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
5357             sas_address);
5358
5359         if (!sas_device)
5360                 goto out_unlock;
5361
5362         if (unlikely(sas_device->handle != handle)) {
5363                 starget = sas_device->starget;
5364                 sas_target_priv_data = starget->hostdata;
5365                 starget_printk(KERN_INFO, starget,
5366                         "handle changed from(0x%04x) to (0x%04x)!!!\n",
5367                         sas_device->handle, handle);
5368                 sas_target_priv_data->handle = handle;
5369                 sas_device->handle = handle;
5370                 if (sas_device_pg0.Flags &
5371                      MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5372                         sas_device->enclosure_level =
5373                                 le16_to_cpu(sas_device_pg0.EnclosureLevel);
5374                         memcpy(sas_device->connector_name,
5375                                 sas_device_pg0.ConnectorName, 4);
5376                         sas_device->connector_name[4] = '\0';
5377                 } else {
5378                         sas_device->enclosure_level = 0;
5379                         sas_device->connector_name[0] = '\0';
5380                 }
5381         }
5382
5383         /* check if device is present */
5384         if (!(le16_to_cpu(sas_device_pg0.Flags) &
5385             MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5386                 pr_err(MPT3SAS_FMT
5387                         "device is not present handle(0x%04x), flags!!!\n",
5388                         ioc->name, handle);
5389                 goto out_unlock;
5390         }
5391
5392         /* check if there were any issues with discovery */
5393         if (_scsih_check_access_status(ioc, sas_address, handle,
5394             sas_device_pg0.AccessStatus))
5395                 goto out_unlock;
5396
5397         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5398         _scsih_ublock_io_device(ioc, sas_address);
5399
5400         if (sas_device)
5401                 sas_device_put(sas_device);
5402         return;
5403
5404 out_unlock:
5405         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5406         if (sas_device)
5407                 sas_device_put(sas_device);
5408 }
5409
5410 /**
5411  * _scsih_add_device -  creating sas device object
5412  * @ioc: per adapter object
5413  * @handle: sas device handle
5414  * @phy_num: phy number end device attached to
5415  * @is_pd: is this hidden raid component
5416  *
5417  * Creating end device object, stored in ioc->sas_device_list.
5418  *
5419  * Returns 0 for success, non-zero for failure.
5420  */
5421 static int
5422 _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phy_num,
5423         u8 is_pd)
5424 {
5425         Mpi2ConfigReply_t mpi_reply;
5426         Mpi2SasDevicePage0_t sas_device_pg0;
5427         Mpi2SasEnclosurePage0_t enclosure_pg0;
5428         struct _sas_device *sas_device;
5429         u32 ioc_status;
5430         u64 sas_address;
5431         u32 device_info;
5432
5433         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5434             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
5435                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5436                     ioc->name, __FILE__, __LINE__, __func__);
5437                 return -1;
5438         }
5439
5440         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5441             MPI2_IOCSTATUS_MASK;
5442         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5443                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5444                     ioc->name, __FILE__, __LINE__, __func__);
5445                 return -1;
5446         }
5447
5448         /* check if this is end device */
5449         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5450         if (!(_scsih_is_end_device(device_info)))
5451                 return -1;
5452         sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5453
5454         /* check if device is present */
5455         if (!(le16_to_cpu(sas_device_pg0.Flags) &
5456             MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5457                 pr_err(MPT3SAS_FMT "device is not present handle(0x04%x)!!!\n",
5458                         ioc->name, handle);
5459                 return -1;
5460         }
5461
5462         /* check if there were any issues with discovery */
5463         if (_scsih_check_access_status(ioc, sas_address, handle,
5464             sas_device_pg0.AccessStatus))
5465                 return -1;
5466
5467         sas_device = mpt3sas_get_sdev_by_addr(ioc,
5468                                         sas_address);
5469         if (sas_device) {
5470                 sas_device_put(sas_device);
5471                 return -1;
5472         }
5473
5474         sas_device = kzalloc(sizeof(struct _sas_device),
5475             GFP_KERNEL);
5476         if (!sas_device) {
5477                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5478                     ioc->name, __FILE__, __LINE__, __func__);
5479                 return 0;
5480         }
5481
5482         kref_init(&sas_device->refcount);
5483         sas_device->handle = handle;
5484         if (_scsih_get_sas_address(ioc,
5485             le16_to_cpu(sas_device_pg0.ParentDevHandle),
5486             &sas_device->sas_address_parent) != 0)
5487                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5488                     ioc->name, __FILE__, __LINE__, __func__);
5489         sas_device->enclosure_handle =
5490             le16_to_cpu(sas_device_pg0.EnclosureHandle);
5491         if (sas_device->enclosure_handle != 0)
5492                 sas_device->slot =
5493                     le16_to_cpu(sas_device_pg0.Slot);
5494         sas_device->device_info = device_info;
5495         sas_device->sas_address = sas_address;
5496         sas_device->phy = sas_device_pg0.PhyNum;
5497         sas_device->fast_path = (le16_to_cpu(sas_device_pg0.Flags) &
5498             MPI25_SAS_DEVICE0_FLAGS_FAST_PATH_CAPABLE) ? 1 : 0;
5499
5500         if (sas_device_pg0.Flags & MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5501                 sas_device->enclosure_level =
5502                         le16_to_cpu(sas_device_pg0.EnclosureLevel);
5503                 memcpy(sas_device->connector_name,
5504                         sas_device_pg0.ConnectorName, 4);
5505                 sas_device->connector_name[4] = '\0';
5506         } else {
5507                 sas_device->enclosure_level = 0;
5508                 sas_device->connector_name[0] = '\0';
5509         }
5510         /* get enclosure_logical_id */
5511         if (sas_device->enclosure_handle && !(mpt3sas_config_get_enclosure_pg0(
5512            ioc, &mpi_reply, &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5513            sas_device->enclosure_handle)))
5514                 sas_device->enclosure_logical_id =
5515                     le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5516
5517         /* get device name */
5518         sas_device->device_name = le64_to_cpu(sas_device_pg0.DeviceName);
5519
5520         if (ioc->wait_for_discovery_to_complete)
5521                 _scsih_sas_device_init_add(ioc, sas_device);
5522         else
5523                 _scsih_sas_device_add(ioc, sas_device);
5524
5525         sas_device_put(sas_device);
5526         return 0;
5527 }
5528
5529 /**
5530  * _scsih_remove_device -  removing sas device object
5531  * @ioc: per adapter object
5532  * @sas_device_delete: the sas_device object
5533  *
5534  * Return nothing.
5535  */
5536 static void
5537 _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
5538         struct _sas_device *sas_device)
5539 {
5540         struct MPT3SAS_TARGET *sas_target_priv_data;
5541
5542         if ((ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM) &&
5543              (sas_device->pfa_led_on)) {
5544                 _scsih_turn_off_pfa_led(ioc, sas_device);
5545                 sas_device->pfa_led_on = 0;
5546         }
5547         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5548                 "%s: enter: handle(0x%04x), sas_addr(0x%016llx)\n",
5549                 ioc->name, __func__,
5550             sas_device->handle, (unsigned long long)
5551             sas_device->sas_address));
5552         if (sas_device->enclosure_handle != 0)
5553                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5554                     "%s: enter: enclosure logical id(0x%016llx), slot(%d)\n",
5555                     ioc->name, __func__,
5556                     (unsigned long long)sas_device->enclosure_logical_id,
5557                     sas_device->slot));
5558         if (sas_device->connector_name[0] != '\0')
5559                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5560                   "%s: enter: enclosure level(0x%04x), connector name( %s)\n",
5561                   ioc->name, __func__,
5562                   sas_device->enclosure_level,
5563                   sas_device->connector_name));
5564
5565         if (sas_device->starget && sas_device->starget->hostdata) {
5566                 sas_target_priv_data = sas_device->starget->hostdata;
5567                 sas_target_priv_data->deleted = 1;
5568                 _scsih_ublock_io_device(ioc, sas_device->sas_address);
5569                 sas_target_priv_data->handle =
5570                      MPT3SAS_INVALID_DEVICE_HANDLE;
5571         }
5572
5573         if (!ioc->hide_drives)
5574                 mpt3sas_transport_port_remove(ioc,
5575                     sas_device->sas_address,
5576                     sas_device->sas_address_parent);
5577
5578         pr_info(MPT3SAS_FMT
5579                 "removing handle(0x%04x), sas_addr(0x%016llx)\n",
5580                 ioc->name, sas_device->handle,
5581             (unsigned long long) sas_device->sas_address);
5582         if (sas_device->enclosure_handle != 0)
5583                 pr_info(MPT3SAS_FMT
5584                   "removing : enclosure logical id(0x%016llx), slot(%d)\n",
5585                   ioc->name,
5586                   (unsigned long long)sas_device->enclosure_logical_id,
5587                   sas_device->slot);
5588         if (sas_device->connector_name[0] != '\0')
5589                 pr_info(MPT3SAS_FMT
5590                   "removing enclosure level(0x%04x), connector name( %s)\n",
5591                   ioc->name, sas_device->enclosure_level,
5592                   sas_device->connector_name);
5593
5594         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5595                 "%s: exit: handle(0x%04x), sas_addr(0x%016llx)\n",
5596                 ioc->name, __func__,
5597                 sas_device->handle, (unsigned long long)
5598                 sas_device->sas_address));
5599         if (sas_device->enclosure_handle != 0)
5600                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5601                     "%s: exit: enclosure logical id(0x%016llx), slot(%d)\n",
5602                     ioc->name, __func__,
5603                     (unsigned long long)sas_device->enclosure_logical_id,
5604                     sas_device->slot));
5605         if (sas_device->connector_name[0] != '\0')
5606                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5607                     "%s: exit: enclosure level(0x%04x), connector name(%s)\n",
5608                     ioc->name, __func__, sas_device->enclosure_level,
5609                     sas_device->connector_name));
5610 }
5611
5612 /**
5613  * _scsih_sas_topology_change_event_debug - debug for topology event
5614  * @ioc: per adapter object
5615  * @event_data: event data payload
5616  * Context: user.
5617  */
5618 static void
5619 _scsih_sas_topology_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5620         Mpi2EventDataSasTopologyChangeList_t *event_data)
5621 {
5622         int i;
5623         u16 handle;
5624         u16 reason_code;
5625         u8 phy_number;
5626         char *status_str = NULL;
5627         u8 link_rate, prev_link_rate;
5628
5629         switch (event_data->ExpStatus) {
5630         case MPI2_EVENT_SAS_TOPO_ES_ADDED:
5631                 status_str = "add";
5632                 break;
5633         case MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
5634                 status_str = "remove";
5635                 break;
5636         case MPI2_EVENT_SAS_TOPO_ES_RESPONDING:
5637         case 0:
5638                 status_str =  "responding";
5639                 break;
5640         case MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
5641                 status_str = "remove delay";
5642                 break;
5643         default:
5644                 status_str = "unknown status";
5645                 break;
5646         }
5647         pr_info(MPT3SAS_FMT "sas topology change: (%s)\n",
5648             ioc->name, status_str);
5649         pr_info("\thandle(0x%04x), enclosure_handle(0x%04x) " \
5650             "start_phy(%02d), count(%d)\n",
5651             le16_to_cpu(event_data->ExpanderDevHandle),
5652             le16_to_cpu(event_data->EnclosureHandle),
5653             event_data->StartPhyNum, event_data->NumEntries);
5654         for (i = 0; i < event_data->NumEntries; i++) {
5655                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5656                 if (!handle)
5657                         continue;
5658                 phy_number = event_data->StartPhyNum + i;
5659                 reason_code = event_data->PHY[i].PhyStatus &
5660                     MPI2_EVENT_SAS_TOPO_RC_MASK;
5661                 switch (reason_code) {
5662                 case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5663                         status_str = "target add";
5664                         break;
5665                 case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5666                         status_str = "target remove";
5667                         break;
5668                 case MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING:
5669                         status_str = "delay target remove";
5670                         break;
5671                 case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5672                         status_str = "link rate change";
5673                         break;
5674                 case MPI2_EVENT_SAS_TOPO_RC_NO_CHANGE:
5675                         status_str = "target responding";
5676                         break;
5677                 default:
5678                         status_str = "unknown";
5679                         break;
5680                 }
5681                 link_rate = event_data->PHY[i].LinkRate >> 4;
5682                 prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5683                 pr_info("\tphy(%02d), attached_handle(0x%04x): %s:" \
5684                     " link rate: new(0x%02x), old(0x%02x)\n", phy_number,
5685                     handle, status_str, link_rate, prev_link_rate);
5686
5687         }
5688 }
5689
5690 /**
5691  * _scsih_sas_topology_change_event - handle topology changes
5692  * @ioc: per adapter object
5693  * @fw_event: The fw_event_work object
5694  * Context: user.
5695  *
5696  */
5697 static int
5698 _scsih_sas_topology_change_event(struct MPT3SAS_ADAPTER *ioc,
5699         struct fw_event_work *fw_event)
5700 {
5701         int i;
5702         u16 parent_handle, handle;
5703         u16 reason_code;
5704         u8 phy_number, max_phys;
5705         struct _sas_node *sas_expander;
5706         u64 sas_address;
5707         unsigned long flags;
5708         u8 link_rate, prev_link_rate;
5709         Mpi2EventDataSasTopologyChangeList_t *event_data =
5710                 (Mpi2EventDataSasTopologyChangeList_t *)
5711                 fw_event->event_data;
5712
5713         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5714                 _scsih_sas_topology_change_event_debug(ioc, event_data);
5715
5716         if (ioc->shost_recovery || ioc->remove_host || ioc->pci_error_recovery)
5717                 return 0;
5718
5719         if (!ioc->sas_hba.num_phys)
5720                 _scsih_sas_host_add(ioc);
5721         else
5722                 _scsih_sas_host_refresh(ioc);
5723
5724         if (fw_event->ignore) {
5725                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
5726                         "ignoring expander event\n", ioc->name));
5727                 return 0;
5728         }
5729
5730         parent_handle = le16_to_cpu(event_data->ExpanderDevHandle);
5731
5732         /* handle expander add */
5733         if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_ADDED)
5734                 if (_scsih_expander_add(ioc, parent_handle) != 0)
5735                         return 0;
5736
5737         spin_lock_irqsave(&ioc->sas_node_lock, flags);
5738         sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
5739             parent_handle);
5740         if (sas_expander) {
5741                 sas_address = sas_expander->sas_address;
5742                 max_phys = sas_expander->num_phys;
5743         } else if (parent_handle < ioc->sas_hba.num_phys) {
5744                 sas_address = ioc->sas_hba.sas_address;
5745                 max_phys = ioc->sas_hba.num_phys;
5746         } else {
5747                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5748                 return 0;
5749         }
5750         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5751
5752         /* handle siblings events */
5753         for (i = 0; i < event_data->NumEntries; i++) {
5754                 if (fw_event->ignore) {
5755                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
5756                                 "ignoring expander event\n", ioc->name));
5757                         return 0;
5758                 }
5759                 if (ioc->remove_host || ioc->pci_error_recovery)
5760                         return 0;
5761                 phy_number = event_data->StartPhyNum + i;
5762                 if (phy_number >= max_phys)
5763                         continue;
5764                 reason_code = event_data->PHY[i].PhyStatus &
5765                     MPI2_EVENT_SAS_TOPO_RC_MASK;
5766                 if ((event_data->PHY[i].PhyStatus &
5767                     MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT) && (reason_code !=
5768                     MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING))
5769                                 continue;
5770                 handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5771                 if (!handle)
5772                         continue;
5773                 link_rate = event_data->PHY[i].LinkRate >> 4;
5774                 prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5775                 switch (reason_code) {
5776                 case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5777
5778                         if (ioc->shost_recovery)
5779                                 break;
5780
5781                         if (link_rate == prev_link_rate)
5782                                 break;
5783
5784                         mpt3sas_transport_update_links(ioc, sas_address,
5785                             handle, phy_number, link_rate);
5786
5787                         if (link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
5788                                 break;
5789
5790                         _scsih_check_device(ioc, sas_address, handle,
5791                             phy_number, link_rate);
5792
5793
5794                 case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5795
5796                         if (ioc->shost_recovery)
5797                                 break;
5798
5799                         mpt3sas_transport_update_links(ioc, sas_address,
5800                             handle, phy_number, link_rate);
5801
5802                         _scsih_add_device(ioc, handle, phy_number, 0);
5803
5804                         break;
5805                 case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5806
5807                         _scsih_device_remove_by_handle(ioc, handle);
5808                         break;
5809                 }
5810         }
5811
5812         /* handle expander removal */
5813         if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING &&
5814             sas_expander)
5815                 mpt3sas_expander_remove(ioc, sas_address);
5816
5817         return 0;
5818 }
5819
5820 /**
5821  * _scsih_sas_device_status_change_event_debug - debug for device event
5822  * @event_data: event data payload
5823  * Context: user.
5824  *
5825  * Return nothing.
5826  */
5827 static void
5828 _scsih_sas_device_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5829         Mpi2EventDataSasDeviceStatusChange_t *event_data)
5830 {
5831         char *reason_str = NULL;
5832
5833         switch (event_data->ReasonCode) {
5834         case MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA:
5835                 reason_str = "smart data";
5836                 break;
5837         case MPI2_EVENT_SAS_DEV_STAT_RC_UNSUPPORTED:
5838                 reason_str = "unsupported device discovered";
5839                 break;
5840         case MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET:
5841                 reason_str = "internal device reset";
5842                 break;
5843         case MPI2_EVENT_SAS_DEV_STAT_RC_TASK_ABORT_INTERNAL:
5844                 reason_str = "internal task abort";
5845                 break;
5846         case MPI2_EVENT_SAS_DEV_STAT_RC_ABORT_TASK_SET_INTERNAL:
5847                 reason_str = "internal task abort set";
5848                 break;
5849         case MPI2_EVENT_SAS_DEV_STAT_RC_CLEAR_TASK_SET_INTERNAL:
5850                 reason_str = "internal clear task set";
5851                 break;
5852         case MPI2_EVENT_SAS_DEV_STAT_RC_QUERY_TASK_INTERNAL:
5853                 reason_str = "internal query task";
5854                 break;
5855         case MPI2_EVENT_SAS_DEV_STAT_RC_SATA_INIT_FAILURE:
5856                 reason_str = "sata init failure";
5857                 break;
5858         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET:
5859                 reason_str = "internal device reset complete";
5860                 break;
5861         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_TASK_ABORT_INTERNAL:
5862                 reason_str = "internal task abort complete";
5863                 break;
5864         case MPI2_EVENT_SAS_DEV_STAT_RC_ASYNC_NOTIFICATION:
5865                 reason_str = "internal async notification";
5866                 break;
5867         case MPI2_EVENT_SAS_DEV_STAT_RC_EXPANDER_REDUCED_FUNCTIONALITY:
5868                 reason_str = "expander reduced functionality";
5869                 break;
5870         case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_EXPANDER_REDUCED_FUNCTIONALITY:
5871                 reason_str = "expander reduced functionality complete";
5872                 break;
5873         default:
5874                 reason_str = "unknown reason";
5875                 break;
5876         }
5877         pr_info(MPT3SAS_FMT "device status change: (%s)\n"
5878             "\thandle(0x%04x), sas address(0x%016llx), tag(%d)",
5879             ioc->name, reason_str, le16_to_cpu(event_data->DevHandle),
5880             (unsigned long long)le64_to_cpu(event_data->SASAddress),
5881             le16_to_cpu(event_data->TaskTag));
5882         if (event_data->ReasonCode == MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA)
5883                 pr_info(MPT3SAS_FMT ", ASC(0x%x), ASCQ(0x%x)\n", ioc->name,
5884                     event_data->ASC, event_data->ASCQ);
5885         pr_info("\n");
5886 }
5887
5888 /**
5889  * _scsih_sas_device_status_change_event - handle device status change
5890  * @ioc: per adapter object
5891  * @fw_event: The fw_event_work object
5892  * Context: user.
5893  *
5894  * Return nothing.
5895  */
5896 static void
5897 _scsih_sas_device_status_change_event(struct MPT3SAS_ADAPTER *ioc,
5898         struct fw_event_work *fw_event)
5899 {
5900         struct MPT3SAS_TARGET *target_priv_data;
5901         struct _sas_device *sas_device;
5902         u64 sas_address;
5903         unsigned long flags;
5904         Mpi2EventDataSasDeviceStatusChange_t *event_data =
5905                 (Mpi2EventDataSasDeviceStatusChange_t *)
5906                 fw_event->event_data;
5907
5908         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5909                 _scsih_sas_device_status_change_event_debug(ioc,
5910                      event_data);
5911
5912         /* In MPI Revision K (0xC), the internal device reset complete was
5913          * implemented, so avoid setting tm_busy flag for older firmware.
5914          */
5915         if ((ioc->facts.HeaderVersion >> 8) < 0xC)
5916                 return;
5917
5918         if (event_data->ReasonCode !=
5919             MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET &&
5920            event_data->ReasonCode !=
5921             MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET)
5922                 return;
5923
5924         spin_lock_irqsave(&ioc->sas_device_lock, flags);
5925         sas_address = le64_to_cpu(event_data->SASAddress);
5926         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
5927             sas_address);
5928
5929         if (!sas_device || !sas_device->starget)
5930                 goto out;
5931
5932         target_priv_data = sas_device->starget->hostdata;
5933         if (!target_priv_data)
5934                 goto out;
5935
5936         if (event_data->ReasonCode ==
5937             MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET)
5938                 target_priv_data->tm_busy = 1;
5939         else
5940                 target_priv_data->tm_busy = 0;
5941
5942 out:
5943         if (sas_device)
5944                 sas_device_put(sas_device);
5945
5946         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5947
5948 }
5949
5950 /**
5951  * _scsih_sas_enclosure_dev_status_change_event_debug - debug for enclosure
5952  * event
5953  * @ioc: per adapter object
5954  * @event_data: event data payload
5955  * Context: user.
5956  *
5957  * Return nothing.
5958  */
5959 static void
5960 _scsih_sas_enclosure_dev_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5961         Mpi2EventDataSasEnclDevStatusChange_t *event_data)
5962 {
5963         char *reason_str = NULL;
5964
5965         switch (event_data->ReasonCode) {
5966         case MPI2_EVENT_SAS_ENCL_RC_ADDED:
5967                 reason_str = "enclosure add";
5968                 break;
5969         case MPI2_EVENT_SAS_ENCL_RC_NOT_RESPONDING:
5970                 reason_str = "enclosure remove";
5971                 break;
5972         default:
5973                 reason_str = "unknown reason";
5974                 break;
5975         }
5976
5977         pr_info(MPT3SAS_FMT "enclosure status change: (%s)\n"
5978             "\thandle(0x%04x), enclosure logical id(0x%016llx)"
5979             " number slots(%d)\n", ioc->name, reason_str,
5980             le16_to_cpu(event_data->EnclosureHandle),
5981             (unsigned long long)le64_to_cpu(event_data->EnclosureLogicalID),
5982             le16_to_cpu(event_data->StartSlot));
5983 }
5984
5985 /**
5986  * _scsih_sas_enclosure_dev_status_change_event - handle enclosure events
5987  * @ioc: per adapter object
5988  * @fw_event: The fw_event_work object
5989  * Context: user.
5990  *
5991  * Return nothing.
5992  */
5993 static void
5994 _scsih_sas_enclosure_dev_status_change_event(struct MPT3SAS_ADAPTER *ioc,
5995         struct fw_event_work *fw_event)
5996 {
5997         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5998                 _scsih_sas_enclosure_dev_status_change_event_debug(ioc,
5999                      (Mpi2EventDataSasEnclDevStatusChange_t *)
6000                      fw_event->event_data);
6001 }
6002
6003 /**
6004  * _scsih_sas_broadcast_primitive_event - handle broadcast events
6005  * @ioc: per adapter object
6006  * @fw_event: The fw_event_work object
6007  * Context: user.
6008  *
6009  * Return nothing.
6010  */
6011 static void
6012 _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
6013         struct fw_event_work *fw_event)
6014 {
6015         struct scsi_cmnd *scmd;
6016         struct scsi_device *sdev;
6017         u16 smid, handle;
6018         u32 lun;
6019         struct MPT3SAS_DEVICE *sas_device_priv_data;
6020         u32 termination_count;
6021         u32 query_count;
6022         Mpi2SCSITaskManagementReply_t *mpi_reply;
6023         Mpi2EventDataSasBroadcastPrimitive_t *event_data =
6024                 (Mpi2EventDataSasBroadcastPrimitive_t *)
6025                 fw_event->event_data;
6026         u16 ioc_status;
6027         unsigned long flags;
6028         int r;
6029         u8 max_retries = 0;
6030         u8 task_abort_retries;
6031
6032         mutex_lock(&ioc->tm_cmds.mutex);
6033         pr_info(MPT3SAS_FMT
6034                 "%s: enter: phy number(%d), width(%d)\n",
6035                 ioc->name, __func__, event_data->PhyNum,
6036              event_data->PortWidth);
6037
6038         _scsih_block_io_all_device(ioc);
6039
6040         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6041         mpi_reply = ioc->tm_cmds.reply;
6042  broadcast_aen_retry:
6043
6044         /* sanity checks for retrying this loop */
6045         if (max_retries++ == 5) {
6046                 dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: giving up\n",
6047                     ioc->name, __func__));
6048                 goto out;
6049         } else if (max_retries > 1)
6050                 dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: %d retry\n",
6051                     ioc->name, __func__, max_retries - 1));
6052
6053         termination_count = 0;
6054         query_count = 0;
6055         for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
6056                 if (ioc->shost_recovery)
6057                         goto out;
6058                 scmd = _scsih_scsi_lookup_get(ioc, smid);
6059                 if (!scmd)
6060                         continue;
6061                 sdev = scmd->device;
6062                 sas_device_priv_data = sdev->hostdata;
6063                 if (!sas_device_priv_data || !sas_device_priv_data->sas_target)
6064                         continue;
6065                  /* skip hidden raid components */
6066                 if (sas_device_priv_data->sas_target->flags &
6067                     MPT_TARGET_FLAGS_RAID_COMPONENT)
6068                         continue;
6069                  /* skip volumes */
6070                 if (sas_device_priv_data->sas_target->flags &
6071                     MPT_TARGET_FLAGS_VOLUME)
6072                         continue;
6073
6074                 handle = sas_device_priv_data->sas_target->handle;
6075                 lun = sas_device_priv_data->lun;
6076                 query_count++;
6077
6078                 if (ioc->shost_recovery)
6079                         goto out;
6080
6081                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6082                 r = mpt3sas_scsih_issue_tm(ioc, handle, 0, 0, lun,
6083                     MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK, smid, 30);
6084                 if (r == FAILED) {
6085                         sdev_printk(KERN_WARNING, sdev,
6086                             "mpt3sas_scsih_issue_tm: FAILED when sending "
6087                             "QUERY_TASK: scmd(%p)\n", scmd);
6088                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6089                         goto broadcast_aen_retry;
6090                 }
6091                 ioc_status = le16_to_cpu(mpi_reply->IOCStatus)
6092                     & MPI2_IOCSTATUS_MASK;
6093                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6094                         sdev_printk(KERN_WARNING, sdev,
6095                                 "query task: FAILED with IOCSTATUS(0x%04x), scmd(%p)\n",
6096                                 ioc_status, scmd);
6097                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6098                         goto broadcast_aen_retry;
6099                 }
6100
6101                 /* see if IO is still owned by IOC and target */
6102                 if (mpi_reply->ResponseCode ==
6103                      MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED ||
6104                      mpi_reply->ResponseCode ==
6105                      MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC) {
6106                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6107                         continue;
6108                 }
6109                 task_abort_retries = 0;
6110  tm_retry:
6111                 if (task_abort_retries++ == 60) {
6112                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6113                             "%s: ABORT_TASK: giving up\n", ioc->name,
6114                             __func__));
6115                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6116                         goto broadcast_aen_retry;
6117                 }
6118
6119                 if (ioc->shost_recovery)
6120                         goto out_no_lock;
6121
6122                 r = mpt3sas_scsih_issue_tm(ioc, handle, sdev->channel, sdev->id,
6123                     sdev->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid,
6124                     30);
6125                 if (r == FAILED) {
6126                         sdev_printk(KERN_WARNING, sdev,
6127                             "mpt3sas_scsih_issue_tm: ABORT_TASK: FAILED : "
6128                             "scmd(%p)\n", scmd);
6129                         goto tm_retry;
6130                 }
6131
6132                 if (task_abort_retries > 1)
6133                         sdev_printk(KERN_WARNING, sdev,
6134                             "mpt3sas_scsih_issue_tm: ABORT_TASK: RETRIES (%d):"
6135                             " scmd(%p)\n",
6136                             task_abort_retries - 1, scmd);
6137
6138                 termination_count += le32_to_cpu(mpi_reply->TerminationCount);
6139                 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6140         }
6141
6142         if (ioc->broadcast_aen_pending) {
6143                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6144                         "%s: loop back due to pending AEN\n",
6145                         ioc->name, __func__));
6146                  ioc->broadcast_aen_pending = 0;
6147                  goto broadcast_aen_retry;
6148         }
6149
6150  out:
6151         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6152  out_no_lock:
6153
6154         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6155             "%s - exit, query_count = %d termination_count = %d\n",
6156             ioc->name, __func__, query_count, termination_count));
6157
6158         ioc->broadcast_aen_busy = 0;
6159         if (!ioc->shost_recovery)
6160                 _scsih_ublock_io_all_device(ioc);
6161         mutex_unlock(&ioc->tm_cmds.mutex);
6162 }
6163
6164 /**
6165  * _scsih_sas_discovery_event - handle discovery events
6166  * @ioc: per adapter object
6167  * @fw_event: The fw_event_work object
6168  * Context: user.
6169  *
6170  * Return nothing.
6171  */
6172 static void
6173 _scsih_sas_discovery_event(struct MPT3SAS_ADAPTER *ioc,
6174         struct fw_event_work *fw_event)
6175 {
6176         Mpi2EventDataSasDiscovery_t *event_data =
6177                 (Mpi2EventDataSasDiscovery_t *) fw_event->event_data;
6178
6179         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) {
6180                 pr_info(MPT3SAS_FMT "discovery event: (%s)", ioc->name,
6181                     (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
6182                     "start" : "stop");
6183                 if (event_data->DiscoveryStatus)
6184                         pr_info("discovery_status(0x%08x)",
6185                             le32_to_cpu(event_data->DiscoveryStatus));
6186                 pr_info("\n");
6187         }
6188
6189         if (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED &&
6190             !ioc->sas_hba.num_phys) {
6191                 if (disable_discovery > 0 && ioc->shost_recovery) {
6192                         /* Wait for the reset to complete */
6193                         while (ioc->shost_recovery)
6194                                 ssleep(1);
6195                 }
6196                 _scsih_sas_host_add(ioc);
6197         }
6198 }
6199
6200 /**
6201  * _scsih_ir_fastpath - turn on fastpath for IR physdisk
6202  * @ioc: per adapter object
6203  * @handle: device handle for physical disk
6204  * @phys_disk_num: physical disk number
6205  *
6206  * Return 0 for success, else failure.
6207  */
6208 static int
6209 _scsih_ir_fastpath(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phys_disk_num)
6210 {
6211         Mpi2RaidActionRequest_t *mpi_request;
6212         Mpi2RaidActionReply_t *mpi_reply;
6213         u16 smid;
6214         u8 issue_reset = 0;
6215         int rc = 0;
6216         u16 ioc_status;
6217         u32 log_info;
6218
6219         if (ioc->hba_mpi_version_belonged == MPI2_VERSION)
6220                 return rc;
6221
6222         mutex_lock(&ioc->scsih_cmds.mutex);
6223
6224         if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
6225                 pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
6226                     ioc->name, __func__);
6227                 rc = -EAGAIN;
6228                 goto out;
6229         }
6230         ioc->scsih_cmds.status = MPT3_CMD_PENDING;
6231
6232         smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
6233         if (!smid) {
6234                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
6235                     ioc->name, __func__);
6236                 ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6237                 rc = -EAGAIN;
6238                 goto out;
6239         }
6240
6241         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
6242         ioc->scsih_cmds.smid = smid;
6243         memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
6244
6245         mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
6246         mpi_request->Action = MPI2_RAID_ACTION_PHYSDISK_HIDDEN;
6247         mpi_request->PhysDiskNum = phys_disk_num;
6248
6249         dewtprintk(ioc, pr_info(MPT3SAS_FMT "IR RAID_ACTION: turning fast "\
6250             "path on for handle(0x%04x), phys_disk_num (0x%02x)\n", ioc->name,
6251             handle, phys_disk_num));
6252
6253         init_completion(&ioc->scsih_cmds.done);
6254         mpt3sas_base_put_smid_default(ioc, smid);
6255         wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
6256
6257         if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
6258                 pr_err(MPT3SAS_FMT "%s: timeout\n",
6259                     ioc->name, __func__);
6260                 if (!(ioc->scsih_cmds.status & MPT3_CMD_RESET))
6261                         issue_reset = 1;
6262                 rc = -EFAULT;
6263                 goto out;
6264         }
6265
6266         if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
6267
6268                 mpi_reply = ioc->scsih_cmds.reply;
6269                 ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
6270                 if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
6271                         log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
6272                 else
6273                         log_info = 0;
6274                 ioc_status &= MPI2_IOCSTATUS_MASK;
6275                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6276                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6277                             "IR RAID_ACTION: failed: ioc_status(0x%04x), "
6278                             "loginfo(0x%08x)!!!\n", ioc->name, ioc_status,
6279                             log_info));
6280                         rc = -EFAULT;
6281                 } else
6282                         dewtprintk(ioc, pr_info(MPT3SAS_FMT
6283                             "IR RAID_ACTION: completed successfully\n",
6284                             ioc->name));
6285         }
6286
6287  out:
6288         ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6289         mutex_unlock(&ioc->scsih_cmds.mutex);
6290
6291         if (issue_reset)
6292                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
6293         return rc;
6294 }
6295
6296 /**
6297  * _scsih_reprobe_lun - reprobing lun
6298  * @sdev: scsi device struct
6299  * @no_uld_attach: sdev->no_uld_attach flag setting
6300  *
6301  **/
6302 static void
6303 _scsih_reprobe_lun(struct scsi_device *sdev, void *no_uld_attach)
6304 {
6305         sdev->no_uld_attach = no_uld_attach ? 1 : 0;
6306         sdev_printk(KERN_INFO, sdev, "%s raid component\n",
6307             sdev->no_uld_attach ? "hidding" : "exposing");
6308         WARN_ON(scsi_device_reprobe(sdev));
6309 }
6310
6311 /**
6312  * _scsih_sas_volume_add - add new volume
6313  * @ioc: per adapter object
6314  * @element: IR config element data
6315  * Context: user.
6316  *
6317  * Return nothing.
6318  */
6319 static void
6320 _scsih_sas_volume_add(struct MPT3SAS_ADAPTER *ioc,
6321         Mpi2EventIrConfigElement_t *element)
6322 {
6323         struct _raid_device *raid_device;
6324         unsigned long flags;
6325         u64 wwid;
6326         u16 handle = le16_to_cpu(element->VolDevHandle);
6327         int rc;
6328
6329         mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6330         if (!wwid) {
6331                 pr_err(MPT3SAS_FMT
6332                     "failure at %s:%d/%s()!\n", ioc->name,
6333                     __FILE__, __LINE__, __func__);
6334                 return;
6335         }
6336
6337         spin_lock_irqsave(&ioc->raid_device_lock, flags);
6338         raid_device = _scsih_raid_device_find_by_wwid(ioc, wwid);
6339         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6340
6341         if (raid_device)
6342                 return;
6343
6344         raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6345         if (!raid_device) {
6346                 pr_err(MPT3SAS_FMT
6347                     "failure at %s:%d/%s()!\n", ioc->name,
6348                     __FILE__, __LINE__, __func__);
6349                 return;
6350         }
6351
6352         raid_device->id = ioc->sas_id++;
6353         raid_device->channel = RAID_CHANNEL;
6354         raid_device->handle = handle;
6355         raid_device->wwid = wwid;
6356         _scsih_raid_device_add(ioc, raid_device);
6357         if (!ioc->wait_for_discovery_to_complete) {
6358                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6359                     raid_device->id, 0);
6360                 if (rc)
6361                         _scsih_raid_device_remove(ioc, raid_device);
6362         } else {
6363                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
6364                 _scsih_determine_boot_device(ioc, raid_device, 1);
6365                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6366         }
6367 }
6368
6369 /**
6370  * _scsih_sas_volume_delete - delete volume
6371  * @ioc: per adapter object
6372  * @handle: volume device handle
6373  * Context: user.
6374  *
6375  * Return nothing.
6376  */
6377 static void
6378 _scsih_sas_volume_delete(struct MPT3SAS_ADAPTER *ioc, u16 handle)
6379 {
6380         struct _raid_device *raid_device;
6381         unsigned long flags;
6382         struct MPT3SAS_TARGET *sas_target_priv_data;
6383         struct scsi_target *starget = NULL;
6384
6385         spin_lock_irqsave(&ioc->raid_device_lock, flags);
6386         raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6387         if (raid_device) {
6388                 if (raid_device->starget) {
6389                         starget = raid_device->starget;
6390                         sas_target_priv_data = starget->hostdata;
6391                         sas_target_priv_data->deleted = 1;
6392                 }
6393                 pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
6394                         ioc->name,  raid_device->handle,
6395                     (unsigned long long) raid_device->wwid);
6396                 list_del(&raid_device->list);
6397                 kfree(raid_device);
6398         }
6399         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6400         if (starget)
6401                 scsi_remove_target(&starget->dev);
6402 }
6403
6404 /**
6405  * _scsih_sas_pd_expose - expose pd component to /dev/sdX
6406  * @ioc: per adapter object
6407  * @element: IR config element data
6408  * Context: user.
6409  *
6410  * Return nothing.
6411  */
6412 static void
6413 _scsih_sas_pd_expose(struct MPT3SAS_ADAPTER *ioc,
6414         Mpi2EventIrConfigElement_t *element)
6415 {
6416         struct _sas_device *sas_device;
6417         struct scsi_target *starget = NULL;
6418         struct MPT3SAS_TARGET *sas_target_priv_data;
6419         unsigned long flags;
6420         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6421
6422         spin_lock_irqsave(&ioc->sas_device_lock, flags);
6423         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6424         if (sas_device) {
6425                 sas_device->volume_handle = 0;
6426                 sas_device->volume_wwid = 0;
6427                 clear_bit(handle, ioc->pd_handles);
6428                 if (sas_device->starget && sas_device->starget->hostdata) {
6429                         starget = sas_device->starget;
6430                         sas_target_priv_data = starget->hostdata;
6431                         sas_target_priv_data->flags &=
6432                             ~MPT_TARGET_FLAGS_RAID_COMPONENT;
6433                 }
6434         }
6435         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6436         if (!sas_device)
6437                 return;
6438
6439         /* exposing raid component */
6440         if (starget)
6441                 starget_for_each_device(starget, NULL, _scsih_reprobe_lun);
6442
6443         sas_device_put(sas_device);
6444 }
6445
6446 /**
6447  * _scsih_sas_pd_hide - hide pd component from /dev/sdX
6448  * @ioc: per adapter object
6449  * @element: IR config element data
6450  * Context: user.
6451  *
6452  * Return nothing.
6453  */
6454 static void
6455 _scsih_sas_pd_hide(struct MPT3SAS_ADAPTER *ioc,
6456         Mpi2EventIrConfigElement_t *element)
6457 {
6458         struct _sas_device *sas_device;
6459         struct scsi_target *starget = NULL;
6460         struct MPT3SAS_TARGET *sas_target_priv_data;
6461         unsigned long flags;
6462         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6463         u16 volume_handle = 0;
6464         u64 volume_wwid = 0;
6465
6466         mpt3sas_config_get_volume_handle(ioc, handle, &volume_handle);
6467         if (volume_handle)
6468                 mpt3sas_config_get_volume_wwid(ioc, volume_handle,
6469                     &volume_wwid);
6470
6471         spin_lock_irqsave(&ioc->sas_device_lock, flags);
6472         sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6473         if (sas_device) {
6474                 set_bit(handle, ioc->pd_handles);
6475                 if (sas_device->starget && sas_device->starget->hostdata) {
6476                         starget = sas_device->starget;
6477                         sas_target_priv_data = starget->hostdata;
6478                         sas_target_priv_data->flags |=
6479                             MPT_TARGET_FLAGS_RAID_COMPONENT;
6480                         sas_device->volume_handle = volume_handle;
6481                         sas_device->volume_wwid = volume_wwid;
6482                 }
6483         }
6484         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6485         if (!sas_device)
6486                 return;
6487
6488         /* hiding raid component */
6489         _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6490
6491         if (starget)
6492                 starget_for_each_device(starget, (void *)1, _scsih_reprobe_lun);
6493
6494         sas_device_put(sas_device);
6495 }
6496
6497 /**
6498  * _scsih_sas_pd_delete - delete pd component
6499  * @ioc: per adapter object
6500  * @element: IR config element data
6501  * Context: user.
6502  *
6503  * Return nothing.
6504  */
6505 static void
6506 _scsih_sas_pd_delete(struct MPT3SAS_ADAPTER *ioc,
6507         Mpi2EventIrConfigElement_t *element)
6508 {
6509         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6510
6511         _scsih_device_remove_by_handle(ioc, handle);
6512 }
6513
6514 /**
6515  * _scsih_sas_pd_add - remove pd component
6516  * @ioc: per adapter object
6517  * @element: IR config element data
6518  * Context: user.
6519  *
6520  * Return nothing.
6521  */
6522 static void
6523 _scsih_sas_pd_add(struct MPT3SAS_ADAPTER *ioc,
6524         Mpi2EventIrConfigElement_t *element)
6525 {
6526         struct _sas_device *sas_device;
6527         u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6528         Mpi2ConfigReply_t mpi_reply;
6529         Mpi2SasDevicePage0_t sas_device_pg0;
6530         u32 ioc_status;
6531         u64 sas_address;
6532         u16 parent_handle;
6533
6534         set_bit(handle, ioc->pd_handles);
6535
6536         sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6537         if (sas_device) {
6538                 _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6539                 sas_device_put(sas_device);
6540                 return;
6541         }
6542
6543         if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
6544             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
6545                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6546                     ioc->name, __FILE__, __LINE__, __func__);
6547                 return;
6548         }
6549
6550         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6551             MPI2_IOCSTATUS_MASK;
6552         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6553                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6554                     ioc->name, __FILE__, __LINE__, __func__);
6555                 return;
6556         }
6557
6558         parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6559         if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6560                 mpt3sas_transport_update_links(ioc, sas_address, handle,
6561                     sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6562
6563         _scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6564         _scsih_add_device(ioc, handle, 0, 1);
6565 }
6566
6567 /**
6568  * _scsih_sas_ir_config_change_event_debug - debug for IR Config Change events
6569  * @ioc: per adapter object
6570  * @event_data: event data payload
6571  * Context: user.
6572  *
6573  * Return nothing.
6574  */
6575 static void
6576 _scsih_sas_ir_config_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
6577         Mpi2EventDataIrConfigChangeList_t *event_data)
6578 {
6579         Mpi2EventIrConfigElement_t *element;
6580         u8 element_type;
6581         int i;
6582         char *reason_str = NULL, *element_str = NULL;
6583
6584         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6585
6586         pr_info(MPT3SAS_FMT "raid config change: (%s), elements(%d)\n",
6587             ioc->name, (le32_to_cpu(event_data->Flags) &
6588             MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ?
6589             "foreign" : "native", event_data->NumElements);
6590         for (i = 0; i < event_data->NumElements; i++, element++) {
6591                 switch (element->ReasonCode) {
6592                 case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6593                         reason_str = "add";
6594                         break;
6595                 case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6596                         reason_str = "remove";
6597                         break;
6598                 case MPI2_EVENT_IR_CHANGE_RC_NO_CHANGE:
6599                         reason_str = "no change";
6600                         break;
6601                 case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6602                         reason_str = "hide";
6603                         break;
6604                 case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6605                         reason_str = "unhide";
6606                         break;
6607                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6608                         reason_str = "volume_created";
6609                         break;
6610                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6611                         reason_str = "volume_deleted";
6612                         break;
6613                 case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6614                         reason_str = "pd_created";
6615                         break;
6616                 case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6617                         reason_str = "pd_deleted";
6618                         break;
6619                 default:
6620                         reason_str = "unknown reason";
6621                         break;
6622                 }
6623                 element_type = le16_to_cpu(element->ElementFlags) &
6624                     MPI2_EVENT_IR_CHANGE_EFLAGS_ELEMENT_TYPE_MASK;
6625                 switch (element_type) {
6626                 case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLUME_ELEMENT:
6627                         element_str = "volume";
6628                         break;
6629                 case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLPHYSDISK_ELEMENT:
6630                         element_str = "phys disk";
6631                         break;
6632                 case MPI2_EVENT_IR_CHANGE_EFLAGS_HOTSPARE_ELEMENT:
6633                         element_str = "hot spare";
6634                         break;
6635                 default:
6636                         element_str = "unknown element";
6637                         break;
6638                 }
6639                 pr_info("\t(%s:%s), vol handle(0x%04x), " \
6640                     "pd handle(0x%04x), pd num(0x%02x)\n", element_str,
6641                     reason_str, le16_to_cpu(element->VolDevHandle),
6642                     le16_to_cpu(element->PhysDiskDevHandle),
6643                     element->PhysDiskNum);
6644         }
6645 }
6646
6647 /**
6648  * _scsih_sas_ir_config_change_event - handle ir configuration change events
6649  * @ioc: per adapter object
6650  * @fw_event: The fw_event_work object
6651  * Context: user.
6652  *
6653  * Return nothing.
6654  */
6655 static void
6656 _scsih_sas_ir_config_change_event(struct MPT3SAS_ADAPTER *ioc,
6657         struct fw_event_work *fw_event)
6658 {
6659         Mpi2EventIrConfigElement_t *element;
6660         int i;
6661         u8 foreign_config;
6662         Mpi2EventDataIrConfigChangeList_t *event_data =
6663                 (Mpi2EventDataIrConfigChangeList_t *)
6664                 fw_event->event_data;
6665
6666         if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
6667              (!ioc->hide_ir_msg))
6668                 _scsih_sas_ir_config_change_event_debug(ioc, event_data);
6669
6670         foreign_config = (le32_to_cpu(event_data->Flags) &
6671             MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ? 1 : 0;
6672
6673         element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6674         if (ioc->shost_recovery &&
6675             ioc->hba_mpi_version_belonged != MPI2_VERSION) {
6676                 for (i = 0; i < event_data->NumElements; i++, element++) {
6677                         if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_HIDE)
6678                                 _scsih_ir_fastpath(ioc,
6679                                         le16_to_cpu(element->PhysDiskDevHandle),
6680                                         element->PhysDiskNum);
6681                 }
6682                 return;
6683         }
6684
6685         for (i = 0; i < event_data->NumElements; i++, element++) {
6686
6687                 switch (element->ReasonCode) {
6688                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6689                 case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6690                         if (!foreign_config)
6691                                 _scsih_sas_volume_add(ioc, element);
6692                         break;
6693                 case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6694                 case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6695                         if (!foreign_config)
6696                                 _scsih_sas_volume_delete(ioc,
6697                                     le16_to_cpu(element->VolDevHandle));
6698                         break;
6699                 case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6700                         if (!ioc->is_warpdrive)
6701                                 _scsih_sas_pd_hide(ioc, element);
6702                         break;
6703                 case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6704                         if (!ioc->is_warpdrive)
6705                                 _scsih_sas_pd_expose(ioc, element);
6706                         break;
6707                 case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6708                         if (!ioc->is_warpdrive)
6709                                 _scsih_sas_pd_add(ioc, element);
6710                         break;
6711                 case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6712                         if (!ioc->is_warpdrive)
6713                                 _scsih_sas_pd_delete(ioc, element);
6714                         break;
6715                 }
6716         }
6717 }
6718
6719 /**
6720  * _scsih_sas_ir_volume_event - IR volume event
6721  * @ioc: per adapter object
6722  * @fw_event: The fw_event_work object
6723  * Context: user.
6724  *
6725  * Return nothing.
6726  */
6727 static void
6728 _scsih_sas_ir_volume_event(struct MPT3SAS_ADAPTER *ioc,
6729         struct fw_event_work *fw_event)
6730 {
6731         u64 wwid;
6732         unsigned long flags;
6733         struct _raid_device *raid_device;
6734         u16 handle;
6735         u32 state;
6736         int rc;
6737         Mpi2EventDataIrVolume_t *event_data =
6738                 (Mpi2EventDataIrVolume_t *) fw_event->event_data;
6739
6740         if (ioc->shost_recovery)
6741                 return;
6742
6743         if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
6744                 return;
6745
6746         handle = le16_to_cpu(event_data->VolDevHandle);
6747         state = le32_to_cpu(event_data->NewValue);
6748         if (!ioc->hide_ir_msg)
6749                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6750                     "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6751                     ioc->name, __func__,  handle,
6752                     le32_to_cpu(event_data->PreviousValue), state));
6753         switch (state) {
6754         case MPI2_RAID_VOL_STATE_MISSING:
6755         case MPI2_RAID_VOL_STATE_FAILED:
6756                 _scsih_sas_volume_delete(ioc, handle);
6757                 break;
6758
6759         case MPI2_RAID_VOL_STATE_ONLINE:
6760         case MPI2_RAID_VOL_STATE_DEGRADED:
6761         case MPI2_RAID_VOL_STATE_OPTIMAL:
6762
6763                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
6764                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6765                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6766
6767                 if (raid_device)
6768                         break;
6769
6770                 mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6771                 if (!wwid) {
6772                         pr_err(MPT3SAS_FMT
6773                             "failure at %s:%d/%s()!\n", ioc->name,
6774                             __FILE__, __LINE__, __func__);
6775                         break;
6776                 }
6777
6778                 raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6779                 if (!raid_device) {
6780                         pr_err(MPT3SAS_FMT
6781                             "failure at %s:%d/%s()!\n", ioc->name,
6782                             __FILE__, __LINE__, __func__);
6783                         break;
6784                 }
6785
6786                 raid_device->id = ioc->sas_id++;
6787                 raid_device->channel = RAID_CHANNEL;
6788                 raid_device->handle = handle;
6789                 raid_device->wwid = wwid;
6790                 _scsih_raid_device_add(ioc, raid_device);
6791                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6792                     raid_device->id, 0);
6793                 if (rc)
6794                         _scsih_raid_device_remove(ioc, raid_device);
6795                 break;
6796
6797         case MPI2_RAID_VOL_STATE_INITIALIZING:
6798         default:
6799                 break;
6800         }
6801 }
6802
6803 /**
6804  * _scsih_sas_ir_physical_disk_event - PD event
6805  * @ioc: per adapter object
6806  * @fw_event: The fw_event_work object
6807  * Context: user.
6808  *
6809  * Return nothing.
6810  */
6811 static void
6812 _scsih_sas_ir_physical_disk_event(struct MPT3SAS_ADAPTER *ioc,
6813         struct fw_event_work *fw_event)
6814 {
6815         u16 handle, parent_handle;
6816         u32 state;
6817         struct _sas_device *sas_device;
6818         Mpi2ConfigReply_t mpi_reply;
6819         Mpi2SasDevicePage0_t sas_device_pg0;
6820         u32 ioc_status;
6821         Mpi2EventDataIrPhysicalDisk_t *event_data =
6822                 (Mpi2EventDataIrPhysicalDisk_t *) fw_event->event_data;
6823         u64 sas_address;
6824
6825         if (ioc->shost_recovery)
6826                 return;
6827
6828         if (event_data->ReasonCode != MPI2_EVENT_IR_PHYSDISK_RC_STATE_CHANGED)
6829                 return;
6830
6831         handle = le16_to_cpu(event_data->PhysDiskDevHandle);
6832         state = le32_to_cpu(event_data->NewValue);
6833
6834         if (!ioc->hide_ir_msg)
6835                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
6836                     "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6837                     ioc->name, __func__,  handle,
6838                     le32_to_cpu(event_data->PreviousValue), state));
6839
6840         switch (state) {
6841         case MPI2_RAID_PD_STATE_ONLINE:
6842         case MPI2_RAID_PD_STATE_DEGRADED:
6843         case MPI2_RAID_PD_STATE_REBUILDING:
6844         case MPI2_RAID_PD_STATE_OPTIMAL:
6845         case MPI2_RAID_PD_STATE_HOT_SPARE:
6846
6847                 if (!ioc->is_warpdrive)
6848                         set_bit(handle, ioc->pd_handles);
6849
6850                 sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6851                 if (sas_device) {
6852                         sas_device_put(sas_device);
6853                         return;
6854                 }
6855
6856                 if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
6857                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
6858                     handle))) {
6859                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6860                             ioc->name, __FILE__, __LINE__, __func__);
6861                         return;
6862                 }
6863
6864                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6865                     MPI2_IOCSTATUS_MASK;
6866                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6867                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6868                             ioc->name, __FILE__, __LINE__, __func__);
6869                         return;
6870                 }
6871
6872                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6873                 if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6874                         mpt3sas_transport_update_links(ioc, sas_address, handle,
6875                             sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6876
6877                 _scsih_add_device(ioc, handle, 0, 1);
6878
6879                 break;
6880
6881         case MPI2_RAID_PD_STATE_OFFLINE:
6882         case MPI2_RAID_PD_STATE_NOT_CONFIGURED:
6883         case MPI2_RAID_PD_STATE_NOT_COMPATIBLE:
6884         default:
6885                 break;
6886         }
6887 }
6888
6889 /**
6890  * _scsih_sas_ir_operation_status_event_debug - debug for IR op event
6891  * @ioc: per adapter object
6892  * @event_data: event data payload
6893  * Context: user.
6894  *
6895  * Return nothing.
6896  */
6897 static void
6898 _scsih_sas_ir_operation_status_event_debug(struct MPT3SAS_ADAPTER *ioc,
6899         Mpi2EventDataIrOperationStatus_t *event_data)
6900 {
6901         char *reason_str = NULL;
6902
6903         switch (event_data->RAIDOperation) {
6904         case MPI2_EVENT_IR_RAIDOP_RESYNC:
6905                 reason_str = "resync";
6906                 break;
6907         case MPI2_EVENT_IR_RAIDOP_ONLINE_CAP_EXPANSION:
6908                 reason_str = "online capacity expansion";
6909                 break;
6910         case MPI2_EVENT_IR_RAIDOP_CONSISTENCY_CHECK:
6911                 reason_str = "consistency check";
6912                 break;
6913         case MPI2_EVENT_IR_RAIDOP_BACKGROUND_INIT:
6914                 reason_str = "background init";
6915                 break;
6916         case MPI2_EVENT_IR_RAIDOP_MAKE_DATA_CONSISTENT:
6917                 reason_str = "make data consistent";
6918                 break;
6919         }
6920
6921         if (!reason_str)
6922                 return;
6923
6924         pr_info(MPT3SAS_FMT "raid operational status: (%s)" \
6925             "\thandle(0x%04x), percent complete(%d)\n",
6926             ioc->name, reason_str,
6927             le16_to_cpu(event_data->VolDevHandle),
6928             event_data->PercentComplete);
6929 }
6930
6931 /**
6932  * _scsih_sas_ir_operation_status_event - handle RAID operation events
6933  * @ioc: per adapter object
6934  * @fw_event: The fw_event_work object
6935  * Context: user.
6936  *
6937  * Return nothing.
6938  */
6939 static void
6940 _scsih_sas_ir_operation_status_event(struct MPT3SAS_ADAPTER *ioc,
6941         struct fw_event_work *fw_event)
6942 {
6943         Mpi2EventDataIrOperationStatus_t *event_data =
6944                 (Mpi2EventDataIrOperationStatus_t *)
6945                 fw_event->event_data;
6946         static struct _raid_device *raid_device;
6947         unsigned long flags;
6948         u16 handle;
6949
6950         if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
6951             (!ioc->hide_ir_msg))
6952                 _scsih_sas_ir_operation_status_event_debug(ioc,
6953                      event_data);
6954
6955         /* code added for raid transport support */
6956         if (event_data->RAIDOperation == MPI2_EVENT_IR_RAIDOP_RESYNC) {
6957
6958                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
6959                 handle = le16_to_cpu(event_data->VolDevHandle);
6960                 raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6961                 if (raid_device)
6962                         raid_device->percent_complete =
6963                             event_data->PercentComplete;
6964                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6965         }
6966 }
6967
6968 /**
6969  * _scsih_prep_device_scan - initialize parameters prior to device scan
6970  * @ioc: per adapter object
6971  *
6972  * Set the deleted flag prior to device scan.  If the device is found during
6973  * the scan, then we clear the deleted flag.
6974  */
6975 static void
6976 _scsih_prep_device_scan(struct MPT3SAS_ADAPTER *ioc)
6977 {
6978         struct MPT3SAS_DEVICE *sas_device_priv_data;
6979         struct scsi_device *sdev;
6980
6981         shost_for_each_device(sdev, ioc->shost) {
6982                 sas_device_priv_data = sdev->hostdata;
6983                 if (sas_device_priv_data && sas_device_priv_data->sas_target)
6984                         sas_device_priv_data->sas_target->deleted = 1;
6985         }
6986 }
6987
6988 /**
6989  * _scsih_mark_responding_sas_device - mark a sas_devices as responding
6990  * @ioc: per adapter object
6991  * @sas_device_pg0: SAS Device page 0
6992  *
6993  * After host reset, find out whether devices are still responding.
6994  * Used in _scsih_remove_unresponsive_sas_devices.
6995  *
6996  * Return nothing.
6997  */
6998 static void
6999 _scsih_mark_responding_sas_device(struct MPT3SAS_ADAPTER *ioc,
7000 Mpi2SasDevicePage0_t *sas_device_pg0)
7001 {
7002         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7003         struct scsi_target *starget;
7004         struct _sas_device *sas_device;
7005         unsigned long flags;
7006
7007         spin_lock_irqsave(&ioc->sas_device_lock, flags);
7008         list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
7009                 if ((sas_device->sas_address == sas_device_pg0->SASAddress) &&
7010                         (sas_device->slot == sas_device_pg0->Slot)) {
7011                         sas_device->responding = 1;
7012                         starget = sas_device->starget;
7013                         if (starget && starget->hostdata) {
7014                                 sas_target_priv_data = starget->hostdata;
7015                                 sas_target_priv_data->tm_busy = 0;
7016                                 sas_target_priv_data->deleted = 0;
7017                         } else
7018                                 sas_target_priv_data = NULL;
7019                         if (starget) {
7020                                 starget_printk(KERN_INFO, starget,
7021                                     "handle(0x%04x), sas_addr(0x%016llx)\n",
7022                                     sas_device_pg0->DevHandle,
7023                                     (unsigned long long)
7024                                     sas_device->sas_address);
7025
7026                                 if (sas_device->enclosure_handle != 0)
7027                                         starget_printk(KERN_INFO, starget,
7028                                          "enclosure logical id(0x%016llx),"
7029                                          " slot(%d)\n",
7030                                          (unsigned long long)
7031                                          sas_device->enclosure_logical_id,
7032                                          sas_device->slot);
7033                         }
7034                         if (sas_device_pg0->Flags &
7035                               MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
7036                                 sas_device->enclosure_level =
7037                                    le16_to_cpu(sas_device_pg0->EnclosureLevel);
7038                                 memcpy(&sas_device->connector_name[0],
7039                                         &sas_device_pg0->ConnectorName[0], 4);
7040                         } else {
7041                                 sas_device->enclosure_level = 0;
7042                                 sas_device->connector_name[0] = '\0';
7043                         }
7044
7045                         if (sas_device->handle == sas_device_pg0->DevHandle)
7046                                 goto out;
7047                         pr_info("\thandle changed from(0x%04x)!!!\n",
7048                             sas_device->handle);
7049                         sas_device->handle = sas_device_pg0->DevHandle;
7050                         if (sas_target_priv_data)
7051                                 sas_target_priv_data->handle =
7052                                         sas_device_pg0->DevHandle;
7053                         goto out;
7054                 }
7055         }
7056  out:
7057         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7058 }
7059
7060 /**
7061  * _scsih_search_responding_sas_devices -
7062  * @ioc: per adapter object
7063  *
7064  * After host reset, find out whether devices are still responding.
7065  * If not remove.
7066  *
7067  * Return nothing.
7068  */
7069 static void
7070 _scsih_search_responding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7071 {
7072         Mpi2SasDevicePage0_t sas_device_pg0;
7073         Mpi2ConfigReply_t mpi_reply;
7074         u16 ioc_status;
7075         u16 handle;
7076         u32 device_info;
7077
7078         pr_info(MPT3SAS_FMT "search for end-devices: start\n", ioc->name);
7079
7080         if (list_empty(&ioc->sas_device_list))
7081                 goto out;
7082
7083         handle = 0xFFFF;
7084         while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7085             &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7086             handle))) {
7087                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7088                     MPI2_IOCSTATUS_MASK;
7089                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7090                         break;
7091                 handle = sas_device_pg0.DevHandle =
7092                                 le16_to_cpu(sas_device_pg0.DevHandle);
7093                 device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
7094                 if (!(_scsih_is_end_device(device_info)))
7095                         continue;
7096                 sas_device_pg0.SASAddress =
7097                                 le64_to_cpu(sas_device_pg0.SASAddress);
7098                 sas_device_pg0.Slot = le16_to_cpu(sas_device_pg0.Slot);
7099                 _scsih_mark_responding_sas_device(ioc, &sas_device_pg0);
7100         }
7101
7102  out:
7103         pr_info(MPT3SAS_FMT "search for end-devices: complete\n",
7104             ioc->name);
7105 }
7106
7107 /**
7108  * _scsih_mark_responding_raid_device - mark a raid_device as responding
7109  * @ioc: per adapter object
7110  * @wwid: world wide identifier for raid volume
7111  * @handle: device handle
7112  *
7113  * After host reset, find out whether devices are still responding.
7114  * Used in _scsih_remove_unresponsive_raid_devices.
7115  *
7116  * Return nothing.
7117  */
7118 static void
7119 _scsih_mark_responding_raid_device(struct MPT3SAS_ADAPTER *ioc, u64 wwid,
7120         u16 handle)
7121 {
7122         struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7123         struct scsi_target *starget;
7124         struct _raid_device *raid_device;
7125         unsigned long flags;
7126
7127         spin_lock_irqsave(&ioc->raid_device_lock, flags);
7128         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
7129                 if (raid_device->wwid == wwid && raid_device->starget) {
7130                         starget = raid_device->starget;
7131                         if (starget && starget->hostdata) {
7132                                 sas_target_priv_data = starget->hostdata;
7133                                 sas_target_priv_data->deleted = 0;
7134                         } else
7135                                 sas_target_priv_data = NULL;
7136                         raid_device->responding = 1;
7137                         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7138                         starget_printk(KERN_INFO, raid_device->starget,
7139                             "handle(0x%04x), wwid(0x%016llx)\n", handle,
7140                             (unsigned long long)raid_device->wwid);
7141
7142                         /*
7143                          * WARPDRIVE: The handles of the PDs might have changed
7144                          * across the host reset so re-initialize the
7145                          * required data for Direct IO
7146                          */
7147                         mpt3sas_init_warpdrive_properties(ioc, raid_device);
7148                         spin_lock_irqsave(&ioc->raid_device_lock, flags);
7149                         if (raid_device->handle == handle) {
7150                                 spin_unlock_irqrestore(&ioc->raid_device_lock,
7151                                     flags);
7152                                 return;
7153                         }
7154                         pr_info("\thandle changed from(0x%04x)!!!\n",
7155                             raid_device->handle);
7156                         raid_device->handle = handle;
7157                         if (sas_target_priv_data)
7158                                 sas_target_priv_data->handle = handle;
7159                         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7160                         return;
7161                 }
7162         }
7163         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7164 }
7165
7166 /**
7167  * _scsih_search_responding_raid_devices -
7168  * @ioc: per adapter object
7169  *
7170  * After host reset, find out whether devices are still responding.
7171  * If not remove.
7172  *
7173  * Return nothing.
7174  */
7175 static void
7176 _scsih_search_responding_raid_devices(struct MPT3SAS_ADAPTER *ioc)
7177 {
7178         Mpi2RaidVolPage1_t volume_pg1;
7179         Mpi2RaidVolPage0_t volume_pg0;
7180         Mpi2RaidPhysDiskPage0_t pd_pg0;
7181         Mpi2ConfigReply_t mpi_reply;
7182         u16 ioc_status;
7183         u16 handle;
7184         u8 phys_disk_num;
7185
7186         if (!ioc->ir_firmware)
7187                 return;
7188
7189         pr_info(MPT3SAS_FMT "search for raid volumes: start\n",
7190             ioc->name);
7191
7192         if (list_empty(&ioc->raid_device_list))
7193                 goto out;
7194
7195         handle = 0xFFFF;
7196         while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7197             &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7198                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7199                     MPI2_IOCSTATUS_MASK;
7200                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7201                         break;
7202                 handle = le16_to_cpu(volume_pg1.DevHandle);
7203
7204                 if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7205                     &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7206                      sizeof(Mpi2RaidVolPage0_t)))
7207                         continue;
7208
7209                 if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7210                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7211                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED)
7212                         _scsih_mark_responding_raid_device(ioc,
7213                             le64_to_cpu(volume_pg1.WWID), handle);
7214         }
7215
7216         /* refresh the pd_handles */
7217         if (!ioc->is_warpdrive) {
7218                 phys_disk_num = 0xFF;
7219                 memset(ioc->pd_handles, 0, ioc->pd_handles_sz);
7220                 while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7221                     &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7222                     phys_disk_num))) {
7223                         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7224                             MPI2_IOCSTATUS_MASK;
7225                         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7226                                 break;
7227                         phys_disk_num = pd_pg0.PhysDiskNum;
7228                         handle = le16_to_cpu(pd_pg0.DevHandle);
7229                         set_bit(handle, ioc->pd_handles);
7230                 }
7231         }
7232  out:
7233         pr_info(MPT3SAS_FMT "search for responding raid volumes: complete\n",
7234                 ioc->name);
7235 }
7236
7237 /**
7238  * _scsih_mark_responding_expander - mark a expander as responding
7239  * @ioc: per adapter object
7240  * @sas_address: sas address
7241  * @handle:
7242  *
7243  * After host reset, find out whether devices are still responding.
7244  * Used in _scsih_remove_unresponsive_expanders.
7245  *
7246  * Return nothing.
7247  */
7248 static void
7249 _scsih_mark_responding_expander(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
7250         u16 handle)
7251 {
7252         struct _sas_node *sas_expander;
7253         unsigned long flags;
7254         int i;
7255
7256         spin_lock_irqsave(&ioc->sas_node_lock, flags);
7257         list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
7258                 if (sas_expander->sas_address != sas_address)
7259                         continue;
7260                 sas_expander->responding = 1;
7261                 if (sas_expander->handle == handle)
7262                         goto out;
7263                 pr_info("\texpander(0x%016llx): handle changed" \
7264                     " from(0x%04x) to (0x%04x)!!!\n",
7265                     (unsigned long long)sas_expander->sas_address,
7266                     sas_expander->handle, handle);
7267                 sas_expander->handle = handle;
7268                 for (i = 0 ; i < sas_expander->num_phys ; i++)
7269                         sas_expander->phy[i].handle = handle;
7270                 goto out;
7271         }
7272  out:
7273         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7274 }
7275
7276 /**
7277  * _scsih_search_responding_expanders -
7278  * @ioc: per adapter object
7279  *
7280  * After host reset, find out whether devices are still responding.
7281  * If not remove.
7282  *
7283  * Return nothing.
7284  */
7285 static void
7286 _scsih_search_responding_expanders(struct MPT3SAS_ADAPTER *ioc)
7287 {
7288         Mpi2ExpanderPage0_t expander_pg0;
7289         Mpi2ConfigReply_t mpi_reply;
7290         u16 ioc_status;
7291         u64 sas_address;
7292         u16 handle;
7293
7294         pr_info(MPT3SAS_FMT "search for expanders: start\n", ioc->name);
7295
7296         if (list_empty(&ioc->sas_expander_list))
7297                 goto out;
7298
7299         handle = 0xFFFF;
7300         while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7301             MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7302
7303                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7304                     MPI2_IOCSTATUS_MASK;
7305                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7306                         break;
7307
7308                 handle = le16_to_cpu(expander_pg0.DevHandle);
7309                 sas_address = le64_to_cpu(expander_pg0.SASAddress);
7310                 pr_info("\texpander present: handle(0x%04x), sas_addr(0x%016llx)\n",
7311                         handle,
7312                     (unsigned long long)sas_address);
7313                 _scsih_mark_responding_expander(ioc, sas_address, handle);
7314         }
7315
7316  out:
7317         pr_info(MPT3SAS_FMT "search for expanders: complete\n", ioc->name);
7318 }
7319
7320 /**
7321  * _scsih_remove_unresponding_sas_devices - removing unresponding devices
7322  * @ioc: per adapter object
7323  *
7324  * Return nothing.
7325  */
7326 static void
7327 _scsih_remove_unresponding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7328 {
7329         struct _sas_device *sas_device, *sas_device_next;
7330         struct _sas_node *sas_expander, *sas_expander_next;
7331         struct _raid_device *raid_device, *raid_device_next;
7332         struct list_head tmp_list;
7333         unsigned long flags;
7334         LIST_HEAD(head);
7335
7336         pr_info(MPT3SAS_FMT "removing unresponding devices: start\n",
7337             ioc->name);
7338
7339         /* removing unresponding end devices */
7340         pr_info(MPT3SAS_FMT "removing unresponding devices: end-devices\n",
7341             ioc->name);
7342         /*
7343          * Iterate, pulling off devices marked as non-responding. We become the
7344          * owner for the reference the list had on any object we prune.
7345          */
7346         spin_lock_irqsave(&ioc->sas_device_lock, flags);
7347         list_for_each_entry_safe(sas_device, sas_device_next,
7348             &ioc->sas_device_list, list) {
7349                 if (!sas_device->responding)
7350                         list_move_tail(&sas_device->list, &head);
7351                 else
7352                         sas_device->responding = 0;
7353         }
7354         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7355
7356         /*
7357          * Now, uninitialize and remove the unresponding devices we pruned.
7358          */
7359         list_for_each_entry_safe(sas_device, sas_device_next, &head, list) {
7360                 _scsih_remove_device(ioc, sas_device);
7361                 list_del_init(&sas_device->list);
7362                 sas_device_put(sas_device);
7363         }
7364
7365         /* removing unresponding volumes */
7366         if (ioc->ir_firmware) {
7367                 pr_info(MPT3SAS_FMT "removing unresponding devices: volumes\n",
7368                         ioc->name);
7369                 list_for_each_entry_safe(raid_device, raid_device_next,
7370                     &ioc->raid_device_list, list) {
7371                         if (!raid_device->responding)
7372                                 _scsih_sas_volume_delete(ioc,
7373                                     raid_device->handle);
7374                         else
7375                                 raid_device->responding = 0;
7376                 }
7377         }
7378
7379         /* removing unresponding expanders */
7380         pr_info(MPT3SAS_FMT "removing unresponding devices: expanders\n",
7381             ioc->name);
7382         spin_lock_irqsave(&ioc->sas_node_lock, flags);
7383         INIT_LIST_HEAD(&tmp_list);
7384         list_for_each_entry_safe(sas_expander, sas_expander_next,
7385             &ioc->sas_expander_list, list) {
7386                 if (!sas_expander->responding)
7387                         list_move_tail(&sas_expander->list, &tmp_list);
7388                 else
7389                         sas_expander->responding = 0;
7390         }
7391         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7392         list_for_each_entry_safe(sas_expander, sas_expander_next, &tmp_list,
7393             list) {
7394                 list_del(&sas_expander->list);
7395                 _scsih_expander_node_remove(ioc, sas_expander);
7396         }
7397
7398         pr_info(MPT3SAS_FMT "removing unresponding devices: complete\n",
7399             ioc->name);
7400
7401         /* unblock devices */
7402         _scsih_ublock_io_all_device(ioc);
7403 }
7404
7405 static void
7406 _scsih_refresh_expander_links(struct MPT3SAS_ADAPTER *ioc,
7407         struct _sas_node *sas_expander, u16 handle)
7408 {
7409         Mpi2ExpanderPage1_t expander_pg1;
7410         Mpi2ConfigReply_t mpi_reply;
7411         int i;
7412
7413         for (i = 0 ; i < sas_expander->num_phys ; i++) {
7414                 if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
7415                     &expander_pg1, i, handle))) {
7416                         pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
7417                             ioc->name, __FILE__, __LINE__, __func__);
7418                         return;
7419                 }
7420
7421                 mpt3sas_transport_update_links(ioc, sas_expander->sas_address,
7422                     le16_to_cpu(expander_pg1.AttachedDevHandle), i,
7423                     expander_pg1.NegotiatedLinkRate >> 4);
7424         }
7425 }
7426
7427 /**
7428  * _scsih_scan_for_devices_after_reset - scan for devices after host reset
7429  * @ioc: per adapter object
7430  *
7431  * Return nothing.
7432  */
7433 static void
7434 _scsih_scan_for_devices_after_reset(struct MPT3SAS_ADAPTER *ioc)
7435 {
7436         Mpi2ExpanderPage0_t expander_pg0;
7437         Mpi2SasDevicePage0_t sas_device_pg0;
7438         Mpi2RaidVolPage1_t volume_pg1;
7439         Mpi2RaidVolPage0_t volume_pg0;
7440         Mpi2RaidPhysDiskPage0_t pd_pg0;
7441         Mpi2EventIrConfigElement_t element;
7442         Mpi2ConfigReply_t mpi_reply;
7443         u8 phys_disk_num;
7444         u16 ioc_status;
7445         u16 handle, parent_handle;
7446         u64 sas_address;
7447         struct _sas_device *sas_device;
7448         struct _sas_node *expander_device;
7449         static struct _raid_device *raid_device;
7450         u8 retry_count;
7451         unsigned long flags;
7452
7453         pr_info(MPT3SAS_FMT "scan devices: start\n", ioc->name);
7454
7455         _scsih_sas_host_refresh(ioc);
7456
7457         pr_info(MPT3SAS_FMT "\tscan devices: expanders start\n", ioc->name);
7458
7459         /* expanders */
7460         handle = 0xFFFF;
7461         while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7462             MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7463                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7464                     MPI2_IOCSTATUS_MASK;
7465                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7466                         pr_info(MPT3SAS_FMT "\tbreak from expander scan: " \
7467                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7468                             ioc->name, ioc_status,
7469                             le32_to_cpu(mpi_reply.IOCLogInfo));
7470                         break;
7471                 }
7472                 handle = le16_to_cpu(expander_pg0.DevHandle);
7473                 spin_lock_irqsave(&ioc->sas_node_lock, flags);
7474                 expander_device = mpt3sas_scsih_expander_find_by_sas_address(
7475                     ioc, le64_to_cpu(expander_pg0.SASAddress));
7476                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7477                 if (expander_device)
7478                         _scsih_refresh_expander_links(ioc, expander_device,
7479                             handle);
7480                 else {
7481                         pr_info(MPT3SAS_FMT "\tBEFORE adding expander: " \
7482                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7483                             handle, (unsigned long long)
7484                             le64_to_cpu(expander_pg0.SASAddress));
7485                         _scsih_expander_add(ioc, handle);
7486                         pr_info(MPT3SAS_FMT "\tAFTER adding expander: " \
7487                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7488                             handle, (unsigned long long)
7489                             le64_to_cpu(expander_pg0.SASAddress));
7490                 }
7491         }
7492
7493         pr_info(MPT3SAS_FMT "\tscan devices: expanders complete\n",
7494             ioc->name);
7495
7496         if (!ioc->ir_firmware)
7497                 goto skip_to_sas;
7498
7499         pr_info(MPT3SAS_FMT "\tscan devices: phys disk start\n", ioc->name);
7500
7501         /* phys disk */
7502         phys_disk_num = 0xFF;
7503         while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7504             &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7505             phys_disk_num))) {
7506                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7507                     MPI2_IOCSTATUS_MASK;
7508                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7509                         pr_info(MPT3SAS_FMT "\tbreak from phys disk scan: "\
7510                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7511                             ioc->name, ioc_status,
7512                             le32_to_cpu(mpi_reply.IOCLogInfo));
7513                         break;
7514                 }
7515                 phys_disk_num = pd_pg0.PhysDiskNum;
7516                 handle = le16_to_cpu(pd_pg0.DevHandle);
7517                 sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
7518                 if (sas_device) {
7519                         sas_device_put(sas_device);
7520                         continue;
7521                 }
7522                 if (mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7523                     &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
7524                     handle) != 0)
7525                         continue;
7526                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7527                     MPI2_IOCSTATUS_MASK;
7528                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7529                         pr_info(MPT3SAS_FMT "\tbreak from phys disk scan " \
7530                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7531                             ioc->name, ioc_status,
7532                             le32_to_cpu(mpi_reply.IOCLogInfo));
7533                         break;
7534                 }
7535                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7536                 if (!_scsih_get_sas_address(ioc, parent_handle,
7537                     &sas_address)) {
7538                         pr_info(MPT3SAS_FMT "\tBEFORE adding phys disk: " \
7539                             " handle (0x%04x), sas_addr(0x%016llx)\n",
7540                             ioc->name, handle, (unsigned long long)
7541                             le64_to_cpu(sas_device_pg0.SASAddress));
7542                         mpt3sas_transport_update_links(ioc, sas_address,
7543                             handle, sas_device_pg0.PhyNum,
7544                             MPI2_SAS_NEG_LINK_RATE_1_5);
7545                         set_bit(handle, ioc->pd_handles);
7546                         retry_count = 0;
7547                         /* This will retry adding the end device.
7548                          * _scsih_add_device() will decide on retries and
7549                          * return "1" when it should be retried
7550                          */
7551                         while (_scsih_add_device(ioc, handle, retry_count++,
7552                             1)) {
7553                                 ssleep(1);
7554                         }
7555                         pr_info(MPT3SAS_FMT "\tAFTER adding phys disk: " \
7556                             " handle (0x%04x), sas_addr(0x%016llx)\n",
7557                             ioc->name, handle, (unsigned long long)
7558                             le64_to_cpu(sas_device_pg0.SASAddress));
7559                 }
7560         }
7561
7562         pr_info(MPT3SAS_FMT "\tscan devices: phys disk complete\n",
7563             ioc->name);
7564
7565         pr_info(MPT3SAS_FMT "\tscan devices: volumes start\n", ioc->name);
7566
7567         /* volumes */
7568         handle = 0xFFFF;
7569         while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7570             &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7571                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7572                     MPI2_IOCSTATUS_MASK;
7573                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7574                         pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7575                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7576                             ioc->name, ioc_status,
7577                             le32_to_cpu(mpi_reply.IOCLogInfo));
7578                         break;
7579                 }
7580                 handle = le16_to_cpu(volume_pg1.DevHandle);
7581                 spin_lock_irqsave(&ioc->raid_device_lock, flags);
7582                 raid_device = _scsih_raid_device_find_by_wwid(ioc,
7583                     le64_to_cpu(volume_pg1.WWID));
7584                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7585                 if (raid_device)
7586                         continue;
7587                 if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7588                     &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7589                      sizeof(Mpi2RaidVolPage0_t)))
7590                         continue;
7591                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7592                     MPI2_IOCSTATUS_MASK;
7593                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7594                         pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7595                             "ioc_status(0x%04x), loginfo(0x%08x)\n",
7596                             ioc->name, ioc_status,
7597                             le32_to_cpu(mpi_reply.IOCLogInfo));
7598                         break;
7599                 }
7600                 if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7601                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7602                     volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED) {
7603                         memset(&element, 0, sizeof(Mpi2EventIrConfigElement_t));
7604                         element.ReasonCode = MPI2_EVENT_IR_CHANGE_RC_ADDED;
7605                         element.VolDevHandle = volume_pg1.DevHandle;
7606                         pr_info(MPT3SAS_FMT
7607                                 "\tBEFORE adding volume: handle (0x%04x)\n",
7608                                 ioc->name, volume_pg1.DevHandle);
7609                         _scsih_sas_volume_add(ioc, &element);
7610                         pr_info(MPT3SAS_FMT
7611                                 "\tAFTER adding volume: handle (0x%04x)\n",
7612                                 ioc->name, volume_pg1.DevHandle);
7613                 }
7614         }
7615
7616         pr_info(MPT3SAS_FMT "\tscan devices: volumes complete\n",
7617             ioc->name);
7618
7619  skip_to_sas:
7620
7621         pr_info(MPT3SAS_FMT "\tscan devices: end devices start\n",
7622             ioc->name);
7623
7624         /* sas devices */
7625         handle = 0xFFFF;
7626         while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7627             &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7628             handle))) {
7629                 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7630                     MPI2_IOCSTATUS_MASK;
7631                 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7632                         pr_info(MPT3SAS_FMT "\tbreak from end device scan:"\
7633                             " ioc_status(0x%04x), loginfo(0x%08x)\n",
7634                             ioc->name, ioc_status,
7635                             le32_to_cpu(mpi_reply.IOCLogInfo));
7636                         break;
7637                 }
7638                 handle = le16_to_cpu(sas_device_pg0.DevHandle);
7639                 if (!(_scsih_is_end_device(
7640                     le32_to_cpu(sas_device_pg0.DeviceInfo))))
7641                         continue;
7642                 sas_device = mpt3sas_get_sdev_by_addr(ioc,
7643                     le64_to_cpu(sas_device_pg0.SASAddress));
7644                 if (sas_device) {
7645                         sas_device_put(sas_device);
7646                         continue;
7647                 }
7648                 parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7649                 if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address)) {
7650                         pr_info(MPT3SAS_FMT "\tBEFORE adding end device: " \
7651                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7652                             handle, (unsigned long long)
7653                             le64_to_cpu(sas_device_pg0.SASAddress));
7654                         mpt3sas_transport_update_links(ioc, sas_address, handle,
7655                             sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
7656                         retry_count = 0;
7657                         /* This will retry adding the end device.
7658                          * _scsih_add_device() will decide on retries and
7659                          * return "1" when it should be retried
7660                          */
7661                         while (_scsih_add_device(ioc, handle, retry_count++,
7662                             0)) {
7663                                 ssleep(1);
7664                         }
7665                         pr_info(MPT3SAS_FMT "\tAFTER adding end device: " \
7666                             "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7667                             handle, (unsigned long long)
7668                             le64_to_cpu(sas_device_pg0.SASAddress));
7669                 }
7670         }
7671         pr_info(MPT3SAS_FMT "\tscan devices: end devices complete\n",
7672             ioc->name);
7673
7674         pr_info(MPT3SAS_FMT "scan devices: complete\n", ioc->name);
7675 }
7676 /**
7677  * mpt3sas_scsih_reset_handler - reset callback handler (for scsih)
7678  * @ioc: per adapter object
7679  * @reset_phase: phase
7680  *
7681  * The handler for doing any required cleanup or initialization.
7682  *
7683  * The reset phase can be MPT3_IOC_PRE_RESET, MPT3_IOC_AFTER_RESET,
7684  * MPT3_IOC_DONE_RESET
7685  *
7686  * Return nothing.
7687  */
7688 void
7689 mpt3sas_scsih_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
7690 {
7691         switch (reset_phase) {
7692         case MPT3_IOC_PRE_RESET:
7693                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7694                         "%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
7695                 break;
7696         case MPT3_IOC_AFTER_RESET:
7697                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7698                         "%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
7699                 if (ioc->scsih_cmds.status & MPT3_CMD_PENDING) {
7700                         ioc->scsih_cmds.status |= MPT3_CMD_RESET;
7701                         mpt3sas_base_free_smid(ioc, ioc->scsih_cmds.smid);
7702                         complete(&ioc->scsih_cmds.done);
7703                 }
7704                 if (ioc->tm_cmds.status & MPT3_CMD_PENDING) {
7705                         ioc->tm_cmds.status |= MPT3_CMD_RESET;
7706                         mpt3sas_base_free_smid(ioc, ioc->tm_cmds.smid);
7707                         complete(&ioc->tm_cmds.done);
7708                 }
7709
7710                 _scsih_fw_event_cleanup_queue(ioc);
7711                 _scsih_flush_running_cmds(ioc);
7712                 break;
7713         case MPT3_IOC_DONE_RESET:
7714                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
7715                         "%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));
7716                 if ((!ioc->is_driver_loading) && !(disable_discovery > 0 &&
7717                     !ioc->sas_hba.num_phys)) {
7718                         _scsih_prep_device_scan(ioc);
7719                         _scsih_search_responding_sas_devices(ioc);
7720                         _scsih_search_responding_raid_devices(ioc);
7721                         _scsih_search_responding_expanders(ioc);
7722                         _scsih_error_recovery_delete_devices(ioc);
7723                 }
7724                 break;
7725         }
7726 }
7727
7728 /**
7729  * _mpt3sas_fw_work - delayed task for processing firmware events
7730  * @ioc: per adapter object
7731  * @fw_event: The fw_event_work object
7732  * Context: user.
7733  *
7734  * Return nothing.
7735  */
7736 static void
7737 _mpt3sas_fw_work(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
7738 {
7739         _scsih_fw_event_del_from_list(ioc, fw_event);
7740
7741         /* the queue is being flushed so ignore this event */
7742         if (ioc->remove_host || ioc->pci_error_recovery) {
7743                 fw_event_work_put(fw_event);
7744                 return;
7745         }
7746
7747         switch (fw_event->event) {
7748         case MPT3SAS_PROCESS_TRIGGER_DIAG:
7749                 mpt3sas_process_trigger_data(ioc,
7750                         (struct SL_WH_TRIGGERS_EVENT_DATA_T *)
7751                         fw_event->event_data);
7752                 break;
7753         case MPT3SAS_REMOVE_UNRESPONDING_DEVICES:
7754                 while (scsi_host_in_recovery(ioc->shost) ||
7755                                          ioc->shost_recovery) {
7756                         /*
7757                          * If we're unloading, bail. Otherwise, this can become
7758                          * an infinite loop.
7759                          */
7760                         if (ioc->remove_host)
7761                                 goto out;
7762                         ssleep(1);
7763                 }
7764                 _scsih_remove_unresponding_sas_devices(ioc);
7765                 _scsih_scan_for_devices_after_reset(ioc);
7766                 break;
7767         case MPT3SAS_PORT_ENABLE_COMPLETE:
7768                 ioc->start_scan = 0;
7769         if (missing_delay[0] != -1 && missing_delay[1] != -1)
7770                         mpt3sas_base_update_missing_delay(ioc, missing_delay[0],
7771                             missing_delay[1]);
7772                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
7773                         "port enable: complete from worker thread\n",
7774                         ioc->name));
7775                 break;
7776         case MPT3SAS_TURN_ON_PFA_LED:
7777                 _scsih_turn_on_pfa_led(ioc, fw_event->device_handle);
7778                 break;
7779         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7780                 _scsih_sas_topology_change_event(ioc, fw_event);
7781                 break;
7782         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
7783                 _scsih_sas_device_status_change_event(ioc, fw_event);
7784                 break;
7785         case MPI2_EVENT_SAS_DISCOVERY:
7786                 _scsih_sas_discovery_event(ioc, fw_event);
7787                 break;
7788         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7789                 _scsih_sas_broadcast_primitive_event(ioc, fw_event);
7790                 break;
7791         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
7792                 _scsih_sas_enclosure_dev_status_change_event(ioc,
7793                     fw_event);
7794                 break;
7795         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7796                 _scsih_sas_ir_config_change_event(ioc, fw_event);
7797                 break;
7798         case MPI2_EVENT_IR_VOLUME:
7799                 _scsih_sas_ir_volume_event(ioc, fw_event);
7800                 break;
7801         case MPI2_EVENT_IR_PHYSICAL_DISK:
7802                 _scsih_sas_ir_physical_disk_event(ioc, fw_event);
7803                 break;
7804         case MPI2_EVENT_IR_OPERATION_STATUS:
7805                 _scsih_sas_ir_operation_status_event(ioc, fw_event);
7806                 break;
7807         }
7808 out:
7809         fw_event_work_put(fw_event);
7810 }
7811
7812 /**
7813  * _firmware_event_work
7814  * @ioc: per adapter object
7815  * @work: The fw_event_work object
7816  * Context: user.
7817  *
7818  * wrappers for the work thread handling firmware events
7819  *
7820  * Return nothing.
7821  */
7822
7823 static void
7824 _firmware_event_work(struct work_struct *work)
7825 {
7826         struct fw_event_work *fw_event = container_of(work,
7827             struct fw_event_work, work);
7828
7829         _mpt3sas_fw_work(fw_event->ioc, fw_event);
7830 }
7831
7832 /**
7833  * mpt3sas_scsih_event_callback - firmware event handler (called at ISR time)
7834  * @ioc: per adapter object
7835  * @msix_index: MSIX table index supplied by the OS
7836  * @reply: reply message frame(lower 32bit addr)
7837  * Context: interrupt.
7838  *
7839  * This function merely adds a new work task into ioc->firmware_event_thread.
7840  * The tasks are worked from _firmware_event_work in user context.
7841  *
7842  * Return 1 meaning mf should be freed from _base_interrupt
7843  *        0 means the mf is freed from this function.
7844  */
7845 u8
7846 mpt3sas_scsih_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
7847         u32 reply)
7848 {
7849         struct fw_event_work *fw_event;
7850         Mpi2EventNotificationReply_t *mpi_reply;
7851         u16 event;
7852         u16 sz;
7853         Mpi26EventDataActiveCableExcept_t *ActiveCableEventData;
7854
7855         /* events turned off due to host reset or driver unloading */
7856         if (ioc->remove_host || ioc->pci_error_recovery)
7857                 return 1;
7858
7859         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
7860
7861         if (unlikely(!mpi_reply)) {
7862                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
7863                     ioc->name, __FILE__, __LINE__, __func__);
7864                 return 1;
7865         }
7866
7867         event = le16_to_cpu(mpi_reply->Event);
7868
7869         if (event != MPI2_EVENT_LOG_ENTRY_ADDED)
7870                 mpt3sas_trigger_event(ioc, event, 0);
7871
7872         switch (event) {
7873         /* handle these */
7874         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7875         {
7876                 Mpi2EventDataSasBroadcastPrimitive_t *baen_data =
7877                     (Mpi2EventDataSasBroadcastPrimitive_t *)
7878                     mpi_reply->EventData;
7879
7880                 if (baen_data->Primitive !=
7881                     MPI2_EVENT_PRIMITIVE_ASYNCHRONOUS_EVENT)
7882                         return 1;
7883
7884                 if (ioc->broadcast_aen_busy) {
7885                         ioc->broadcast_aen_pending++;
7886                         return 1;
7887                 } else
7888                         ioc->broadcast_aen_busy = 1;
7889                 break;
7890         }
7891
7892         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7893                 _scsih_check_topo_delete_events(ioc,
7894                     (Mpi2EventDataSasTopologyChangeList_t *)
7895                     mpi_reply->EventData);
7896                 break;
7897         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7898                 _scsih_check_ir_config_unhide_events(ioc,
7899                     (Mpi2EventDataIrConfigChangeList_t *)
7900                     mpi_reply->EventData);
7901                 break;
7902         case MPI2_EVENT_IR_VOLUME:
7903                 _scsih_check_volume_delete_events(ioc,
7904                     (Mpi2EventDataIrVolume_t *)
7905                     mpi_reply->EventData);
7906                 break;
7907         case MPI2_EVENT_LOG_ENTRY_ADDED:
7908         {
7909                 Mpi2EventDataLogEntryAdded_t *log_entry;
7910                 u32 *log_code;
7911
7912                 if (!ioc->is_warpdrive)
7913                         break;
7914
7915                 log_entry = (Mpi2EventDataLogEntryAdded_t *)
7916                     mpi_reply->EventData;
7917                 log_code = (u32 *)log_entry->LogData;
7918
7919                 if (le16_to_cpu(log_entry->LogEntryQualifier)
7920                     != MPT2_WARPDRIVE_LOGENTRY)
7921                         break;
7922
7923                 switch (le32_to_cpu(*log_code)) {
7924                 case MPT2_WARPDRIVE_LC_SSDT:
7925                         pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
7926                             "IO Throttling has occurred in the WarpDrive "
7927                             "subsystem. Check WarpDrive documentation for "
7928                             "additional details.\n", ioc->name);
7929                         break;
7930                 case MPT2_WARPDRIVE_LC_SSDLW:
7931                         pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
7932                             "Program/Erase Cycles for the WarpDrive subsystem "
7933                             "in degraded range. Check WarpDrive documentation "
7934                             "for additional details.\n", ioc->name);
7935                         break;
7936                 case MPT2_WARPDRIVE_LC_SSDLF:
7937                         pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
7938                             "There are no Program/Erase Cycles for the "
7939                             "WarpDrive subsystem. The storage device will be "
7940                             "in read-only mode. Check WarpDrive documentation "
7941                             "for additional details.\n", ioc->name);
7942                         break;
7943                 case MPT2_WARPDRIVE_LC_BRMF:
7944                         pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
7945                             "The Backup Rail Monitor has failed on the "
7946                             "WarpDrive subsystem. Check WarpDrive "
7947                             "documentation for additional details.\n",
7948                             ioc->name);
7949                         break;
7950                 }
7951
7952                 break;
7953         }
7954         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
7955         case MPI2_EVENT_IR_OPERATION_STATUS:
7956         case MPI2_EVENT_SAS_DISCOVERY:
7957         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
7958         case MPI2_EVENT_IR_PHYSICAL_DISK:
7959                 break;
7960
7961         case MPI2_EVENT_TEMP_THRESHOLD:
7962                 _scsih_temp_threshold_events(ioc,
7963                         (Mpi2EventDataTemperature_t *)
7964                         mpi_reply->EventData);
7965                 break;
7966         case MPI2_EVENT_ACTIVE_CABLE_EXCEPTION:
7967                 ActiveCableEventData =
7968                     (Mpi26EventDataActiveCableExcept_t *) mpi_reply->EventData;
7969                 if (ActiveCableEventData->ReasonCode ==
7970                                 MPI26_EVENT_ACTIVE_CABLE_INSUFFICIENT_POWER) {
7971                         pr_info(MPT3SAS_FMT "Currently an active cable with ReceptacleID %d",
7972                             ioc->name, ActiveCableEventData->ReceptacleID);
7973                         pr_info("cannot be powered and devices connected to this active cable");
7974                         pr_info("will not be seen. This active cable");
7975                         pr_info("requires %d mW of power",
7976                             ActiveCableEventData->ActiveCablePowerRequirement);
7977                 }
7978                 break;
7979
7980         default: /* ignore the rest */
7981                 return 1;
7982         }
7983
7984         sz = le16_to_cpu(mpi_reply->EventDataLength) * 4;
7985         fw_event = alloc_fw_event_work(sz);
7986         if (!fw_event) {
7987                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
7988                     ioc->name, __FILE__, __LINE__, __func__);
7989                 return 1;
7990         }
7991
7992         memcpy(fw_event->event_data, mpi_reply->EventData, sz);
7993         fw_event->ioc = ioc;
7994         fw_event->VF_ID = mpi_reply->VF_ID;
7995         fw_event->VP_ID = mpi_reply->VP_ID;
7996         fw_event->event = event;
7997         _scsih_fw_event_add(ioc, fw_event);
7998         fw_event_work_put(fw_event);
7999         return 1;
8000 }
8001
8002 /**
8003  * _scsih_expander_node_remove - removing expander device from list.
8004  * @ioc: per adapter object
8005  * @sas_expander: the sas_device object
8006  * Context: Calling function should acquire ioc->sas_node_lock.
8007  *
8008  * Removing object and freeing associated memory from the
8009  * ioc->sas_expander_list.
8010  *
8011  * Return nothing.
8012  */
8013 static void
8014 _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
8015         struct _sas_node *sas_expander)
8016 {
8017         struct _sas_port *mpt3sas_port, *next;
8018
8019         /* remove sibling ports attached to this expander */
8020         list_for_each_entry_safe(mpt3sas_port, next,
8021            &sas_expander->sas_port_list, port_list) {
8022                 if (ioc->shost_recovery)
8023                         return;
8024                 if (mpt3sas_port->remote_identify.device_type ==
8025                     SAS_END_DEVICE)
8026                         mpt3sas_device_remove_by_sas_address(ioc,
8027                             mpt3sas_port->remote_identify.sas_address);
8028                 else if (mpt3sas_port->remote_identify.device_type ==
8029                     SAS_EDGE_EXPANDER_DEVICE ||
8030                     mpt3sas_port->remote_identify.device_type ==
8031                     SAS_FANOUT_EXPANDER_DEVICE)
8032                         mpt3sas_expander_remove(ioc,
8033                             mpt3sas_port->remote_identify.sas_address);
8034         }
8035
8036         mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
8037             sas_expander->sas_address_parent);
8038
8039         pr_info(MPT3SAS_FMT
8040                 "expander_remove: handle(0x%04x), sas_addr(0x%016llx)\n",
8041                 ioc->name,
8042             sas_expander->handle, (unsigned long long)
8043             sas_expander->sas_address);
8044
8045         kfree(sas_expander->phy);
8046         kfree(sas_expander);
8047 }
8048
8049 /**
8050  * _scsih_ir_shutdown - IR shutdown notification
8051  * @ioc: per adapter object
8052  *
8053  * Sending RAID Action to alert the Integrated RAID subsystem of the IOC that
8054  * the host system is shutting down.
8055  *
8056  * Return nothing.
8057  */
8058 static void
8059 _scsih_ir_shutdown(struct MPT3SAS_ADAPTER *ioc)
8060 {
8061         Mpi2RaidActionRequest_t *mpi_request;
8062         Mpi2RaidActionReply_t *mpi_reply;
8063         u16 smid;
8064
8065         /* is IR firmware build loaded ? */
8066         if (!ioc->ir_firmware)
8067                 return;
8068
8069         /* are there any volumes ? */
8070         if (list_empty(&ioc->raid_device_list))
8071                 return;
8072
8073         mutex_lock(&ioc->scsih_cmds.mutex);
8074
8075         if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
8076                 pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
8077                     ioc->name, __func__);
8078                 goto out;
8079         }
8080         ioc->scsih_cmds.status = MPT3_CMD_PENDING;
8081
8082         smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
8083         if (!smid) {
8084                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
8085                     ioc->name, __func__);
8086                 ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8087                 goto out;
8088         }
8089
8090         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
8091         ioc->scsih_cmds.smid = smid;
8092         memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
8093
8094         mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
8095         mpi_request->Action = MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED;
8096
8097         if (!ioc->hide_ir_msg)
8098                 pr_info(MPT3SAS_FMT "IR shutdown (sending)\n", ioc->name);
8099         init_completion(&ioc->scsih_cmds.done);
8100         mpt3sas_base_put_smid_default(ioc, smid);
8101         wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
8102
8103         if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
8104                 pr_err(MPT3SAS_FMT "%s: timeout\n",
8105                     ioc->name, __func__);
8106                 goto out;
8107         }
8108
8109         if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
8110                 mpi_reply = ioc->scsih_cmds.reply;
8111                 if (!ioc->hide_ir_msg)
8112                         pr_info(MPT3SAS_FMT "IR shutdown "
8113                            "(complete): ioc_status(0x%04x), loginfo(0x%08x)\n",
8114                             ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
8115                             le32_to_cpu(mpi_reply->IOCLogInfo));
8116         }
8117
8118  out:
8119         ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8120         mutex_unlock(&ioc->scsih_cmds.mutex);
8121 }
8122
8123 /**
8124  * scsih_remove - detach and remove add host
8125  * @pdev: PCI device struct
8126  *
8127  * Routine called when unloading the driver.
8128  * Return nothing.
8129  */
8130 static void scsih_remove(struct pci_dev *pdev)
8131 {
8132         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8133         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8134         struct _sas_port *mpt3sas_port, *next_port;
8135         struct _raid_device *raid_device, *next;
8136         struct MPT3SAS_TARGET *sas_target_priv_data;
8137         struct workqueue_struct *wq;
8138         unsigned long flags;
8139
8140         ioc->remove_host = 1;
8141         _scsih_fw_event_cleanup_queue(ioc);
8142
8143         spin_lock_irqsave(&ioc->fw_event_lock, flags);
8144         wq = ioc->firmware_event_thread;
8145         ioc->firmware_event_thread = NULL;
8146         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8147         if (wq)
8148                 destroy_workqueue(wq);
8149
8150         /* release all the volumes */
8151         _scsih_ir_shutdown(ioc);
8152         list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list,
8153             list) {
8154                 if (raid_device->starget) {
8155                         sas_target_priv_data =
8156                             raid_device->starget->hostdata;
8157                         sas_target_priv_data->deleted = 1;
8158                         scsi_remove_target(&raid_device->starget->dev);
8159                 }
8160                 pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
8161                         ioc->name,  raid_device->handle,
8162                     (unsigned long long) raid_device->wwid);
8163                 _scsih_raid_device_remove(ioc, raid_device);
8164         }
8165
8166         /* free ports attached to the sas_host */
8167         list_for_each_entry_safe(mpt3sas_port, next_port,
8168            &ioc->sas_hba.sas_port_list, port_list) {
8169                 if (mpt3sas_port->remote_identify.device_type ==
8170                     SAS_END_DEVICE)
8171                         mpt3sas_device_remove_by_sas_address(ioc,
8172                             mpt3sas_port->remote_identify.sas_address);
8173                 else if (mpt3sas_port->remote_identify.device_type ==
8174                     SAS_EDGE_EXPANDER_DEVICE ||
8175                     mpt3sas_port->remote_identify.device_type ==
8176                     SAS_FANOUT_EXPANDER_DEVICE)
8177                         mpt3sas_expander_remove(ioc,
8178                             mpt3sas_port->remote_identify.sas_address);
8179         }
8180
8181         /* free phys attached to the sas_host */
8182         if (ioc->sas_hba.num_phys) {
8183                 kfree(ioc->sas_hba.phy);
8184                 ioc->sas_hba.phy = NULL;
8185                 ioc->sas_hba.num_phys = 0;
8186         }
8187
8188         sas_remove_host(shost);
8189         scsi_remove_host(shost);
8190         mpt3sas_base_detach(ioc);
8191         spin_lock(&gioc_lock);
8192         list_del(&ioc->list);
8193         spin_unlock(&gioc_lock);
8194         scsi_host_put(shost);
8195 }
8196
8197 /**
8198  * scsih_shutdown - routine call during system shutdown
8199  * @pdev: PCI device struct
8200  *
8201  * Return nothing.
8202  */
8203 static void
8204 scsih_shutdown(struct pci_dev *pdev)
8205 {
8206         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8207         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8208         struct workqueue_struct *wq;
8209         unsigned long flags;
8210
8211         ioc->remove_host = 1;
8212         _scsih_fw_event_cleanup_queue(ioc);
8213
8214         spin_lock_irqsave(&ioc->fw_event_lock, flags);
8215         wq = ioc->firmware_event_thread;
8216         ioc->firmware_event_thread = NULL;
8217         spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8218         if (wq)
8219                 destroy_workqueue(wq);
8220
8221         _scsih_ir_shutdown(ioc);
8222         mpt3sas_base_detach(ioc);
8223 }
8224
8225
8226 /**
8227  * _scsih_probe_boot_devices - reports 1st device
8228  * @ioc: per adapter object
8229  *
8230  * If specified in bios page 2, this routine reports the 1st
8231  * device scsi-ml or sas transport for persistent boot device
8232  * purposes.  Please refer to function _scsih_determine_boot_device()
8233  */
8234 static void
8235 _scsih_probe_boot_devices(struct MPT3SAS_ADAPTER *ioc)
8236 {
8237         u8 is_raid;
8238         void *device;
8239         struct _sas_device *sas_device;
8240         struct _raid_device *raid_device;
8241         u16 handle;
8242         u64 sas_address_parent;
8243         u64 sas_address;
8244         unsigned long flags;
8245         int rc;
8246
8247          /* no Bios, return immediately */
8248         if (!ioc->bios_pg3.BiosVersion)
8249                 return;
8250
8251         device = NULL;
8252         is_raid = 0;
8253         if (ioc->req_boot_device.device) {
8254                 device =  ioc->req_boot_device.device;
8255                 is_raid = ioc->req_boot_device.is_raid;
8256         } else if (ioc->req_alt_boot_device.device) {
8257                 device =  ioc->req_alt_boot_device.device;
8258                 is_raid = ioc->req_alt_boot_device.is_raid;
8259         } else if (ioc->current_boot_device.device) {
8260                 device =  ioc->current_boot_device.device;
8261                 is_raid = ioc->current_boot_device.is_raid;
8262         }
8263
8264         if (!device)
8265                 return;
8266
8267         if (is_raid) {
8268                 raid_device = device;
8269                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8270                     raid_device->id, 0);
8271                 if (rc)
8272                         _scsih_raid_device_remove(ioc, raid_device);
8273         } else {
8274                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
8275                 sas_device = device;
8276                 handle = sas_device->handle;
8277                 sas_address_parent = sas_device->sas_address_parent;
8278                 sas_address = sas_device->sas_address;
8279                 list_move_tail(&sas_device->list, &ioc->sas_device_list);
8280                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8281
8282                 if (ioc->hide_drives)
8283                         return;
8284                 if (!mpt3sas_transport_port_add(ioc, handle,
8285                     sas_address_parent)) {
8286                         _scsih_sas_device_remove(ioc, sas_device);
8287                 } else if (!sas_device->starget) {
8288                         if (!ioc->is_driver_loading) {
8289                                 mpt3sas_transport_port_remove(ioc,
8290                                     sas_address,
8291                                     sas_address_parent);
8292                                 _scsih_sas_device_remove(ioc, sas_device);
8293                         }
8294                 }
8295         }
8296 }
8297
8298 /**
8299  * _scsih_probe_raid - reporting raid volumes to scsi-ml
8300  * @ioc: per adapter object
8301  *
8302  * Called during initial loading of the driver.
8303  */
8304 static void
8305 _scsih_probe_raid(struct MPT3SAS_ADAPTER *ioc)
8306 {
8307         struct _raid_device *raid_device, *raid_next;
8308         int rc;
8309
8310         list_for_each_entry_safe(raid_device, raid_next,
8311             &ioc->raid_device_list, list) {
8312                 if (raid_device->starget)
8313                         continue;
8314                 rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8315                     raid_device->id, 0);
8316                 if (rc)
8317                         _scsih_raid_device_remove(ioc, raid_device);
8318         }
8319 }
8320
8321 static struct _sas_device *get_next_sas_device(struct MPT3SAS_ADAPTER *ioc)
8322 {
8323         struct _sas_device *sas_device = NULL;
8324         unsigned long flags;
8325
8326         spin_lock_irqsave(&ioc->sas_device_lock, flags);
8327         if (!list_empty(&ioc->sas_device_init_list)) {
8328                 sas_device = list_first_entry(&ioc->sas_device_init_list,
8329                                 struct _sas_device, list);
8330                 sas_device_get(sas_device);
8331         }
8332         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8333
8334         return sas_device;
8335 }
8336
8337 static void sas_device_make_active(struct MPT3SAS_ADAPTER *ioc,
8338                 struct _sas_device *sas_device)
8339 {
8340         unsigned long flags;
8341
8342         spin_lock_irqsave(&ioc->sas_device_lock, flags);
8343
8344         /*
8345          * Since we dropped the lock during the call to port_add(), we need to
8346          * be careful here that somebody else didn't move or delete this item
8347          * while we were busy with other things.
8348          *
8349          * If it was on the list, we need a put() for the reference the list
8350          * had. Either way, we need a get() for the destination list.
8351          */
8352         if (!list_empty(&sas_device->list)) {
8353                 list_del_init(&sas_device->list);
8354                 sas_device_put(sas_device);
8355         }
8356
8357         sas_device_get(sas_device);
8358         list_add_tail(&sas_device->list, &ioc->sas_device_list);
8359
8360         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8361 }
8362
8363 /**
8364  * _scsih_probe_sas - reporting sas devices to sas transport
8365  * @ioc: per adapter object
8366  *
8367  * Called during initial loading of the driver.
8368  */
8369 static void
8370 _scsih_probe_sas(struct MPT3SAS_ADAPTER *ioc)
8371 {
8372         struct _sas_device *sas_device;
8373
8374         if (ioc->hide_drives)
8375                 return;
8376
8377         while ((sas_device = get_next_sas_device(ioc))) {
8378                 if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
8379                     sas_device->sas_address_parent)) {
8380                         _scsih_sas_device_remove(ioc, sas_device);
8381                         sas_device_put(sas_device);
8382                         continue;
8383                 } else if (!sas_device->starget) {
8384                         /*
8385                          * When asyn scanning is enabled, its not possible to
8386                          * remove devices while scanning is turned on due to an
8387                          * oops in scsi_sysfs_add_sdev()->add_device()->
8388                          * sysfs_addrm_start()
8389                          */
8390                         if (!ioc->is_driver_loading) {
8391                                 mpt3sas_transport_port_remove(ioc,
8392                                     sas_device->sas_address,
8393                                     sas_device->sas_address_parent);
8394                                 _scsih_sas_device_remove(ioc, sas_device);
8395                                 sas_device_put(sas_device);
8396                                 continue;
8397                         }
8398                 }
8399                 sas_device_make_active(ioc, sas_device);
8400                 sas_device_put(sas_device);
8401         }
8402 }
8403
8404 /**
8405  * _scsih_probe_devices - probing for devices
8406  * @ioc: per adapter object
8407  *
8408  * Called during initial loading of the driver.
8409  */
8410 static void
8411 _scsih_probe_devices(struct MPT3SAS_ADAPTER *ioc)
8412 {
8413         u16 volume_mapping_flags;
8414
8415         if (!(ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR))
8416                 return;  /* return when IOC doesn't support initiator mode */
8417
8418         _scsih_probe_boot_devices(ioc);
8419
8420         if (ioc->ir_firmware) {
8421                 volume_mapping_flags =
8422                     le16_to_cpu(ioc->ioc_pg8.IRVolumeMappingFlags) &
8423                     MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE;
8424                 if (volume_mapping_flags ==
8425                     MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING) {
8426                         _scsih_probe_raid(ioc);
8427                         _scsih_probe_sas(ioc);
8428                 } else {
8429                         _scsih_probe_sas(ioc);
8430                         _scsih_probe_raid(ioc);
8431                 }
8432         } else
8433                 _scsih_probe_sas(ioc);
8434 }
8435
8436 /**
8437  * scsih_scan_start - scsi lld callback for .scan_start
8438  * @shost: SCSI host pointer
8439  *
8440  * The shost has the ability to discover targets on its own instead
8441  * of scanning the entire bus.  In our implemention, we will kick off
8442  * firmware discovery.
8443  */
8444 static void
8445 scsih_scan_start(struct Scsi_Host *shost)
8446 {
8447         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8448         int rc;
8449         if (diag_buffer_enable != -1 && diag_buffer_enable != 0)
8450                 mpt3sas_enable_diag_buffer(ioc, diag_buffer_enable);
8451
8452         if (disable_discovery > 0)
8453                 return;
8454
8455         ioc->start_scan = 1;
8456         rc = mpt3sas_port_enable(ioc);
8457
8458         if (rc != 0)
8459                 pr_info(MPT3SAS_FMT "port enable: FAILED\n", ioc->name);
8460 }
8461
8462 /**
8463  * scsih_scan_finished - scsi lld callback for .scan_finished
8464  * @shost: SCSI host pointer
8465  * @time: elapsed time of the scan in jiffies
8466  *
8467  * This function will be called periodicallyn until it returns 1 with the
8468  * scsi_host and the elapsed time of the scan in jiffies. In our implemention,
8469  * we wait for firmware discovery to complete, then return 1.
8470  */
8471 static int
8472 scsih_scan_finished(struct Scsi_Host *shost, unsigned long time)
8473 {
8474         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8475
8476         if (disable_discovery > 0) {
8477                 ioc->is_driver_loading = 0;
8478                 ioc->wait_for_discovery_to_complete = 0;
8479                 return 1;
8480         }
8481
8482         if (time >= (300 * HZ)) {
8483                 ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8484                 pr_info(MPT3SAS_FMT
8485                         "port enable: FAILED with timeout (timeout=300s)\n",
8486                         ioc->name);
8487                 ioc->is_driver_loading = 0;
8488                 return 1;
8489         }
8490
8491         if (ioc->start_scan)
8492                 return 0;
8493
8494         if (ioc->start_scan_failed) {
8495                 pr_info(MPT3SAS_FMT
8496                         "port enable: FAILED with (ioc_status=0x%08x)\n",
8497                         ioc->name, ioc->start_scan_failed);
8498                 ioc->is_driver_loading = 0;
8499                 ioc->wait_for_discovery_to_complete = 0;
8500                 ioc->remove_host = 1;
8501                 return 1;
8502         }
8503
8504         pr_info(MPT3SAS_FMT "port enable: SUCCESS\n", ioc->name);
8505         ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8506
8507         if (ioc->wait_for_discovery_to_complete) {
8508                 ioc->wait_for_discovery_to_complete = 0;
8509                 _scsih_probe_devices(ioc);
8510         }
8511         mpt3sas_base_start_watchdog(ioc);
8512         ioc->is_driver_loading = 0;
8513         return 1;
8514 }
8515
8516 /* shost template for SAS 2.0 HBA devices */
8517 static struct scsi_host_template mpt2sas_driver_template = {
8518         .module                         = THIS_MODULE,
8519         .name                           = "Fusion MPT SAS Host",
8520         .proc_name                      = MPT2SAS_DRIVER_NAME,
8521         .queuecommand                   = scsih_qcmd,
8522         .target_alloc                   = scsih_target_alloc,
8523         .slave_alloc                    = scsih_slave_alloc,
8524         .slave_configure                = scsih_slave_configure,
8525         .target_destroy                 = scsih_target_destroy,
8526         .slave_destroy                  = scsih_slave_destroy,
8527         .scan_finished                  = scsih_scan_finished,
8528         .scan_start                     = scsih_scan_start,
8529         .change_queue_depth             = scsih_change_queue_depth,
8530         .eh_abort_handler               = scsih_abort,
8531         .eh_device_reset_handler        = scsih_dev_reset,
8532         .eh_target_reset_handler        = scsih_target_reset,
8533         .eh_host_reset_handler          = scsih_host_reset,
8534         .bios_param                     = scsih_bios_param,
8535         .can_queue                      = 1,
8536         .this_id                        = -1,
8537         .sg_tablesize                   = MPT2SAS_SG_DEPTH,
8538         .max_sectors                    = 32767,
8539         .cmd_per_lun                    = 7,
8540         .use_clustering                 = ENABLE_CLUSTERING,
8541         .shost_attrs                    = mpt3sas_host_attrs,
8542         .sdev_attrs                     = mpt3sas_dev_attrs,
8543         .track_queue_depth              = 1,
8544 };
8545
8546 /* raid transport support for SAS 2.0 HBA devices */
8547 static struct raid_function_template mpt2sas_raid_functions = {
8548         .cookie         = &mpt2sas_driver_template,
8549         .is_raid        = scsih_is_raid,
8550         .get_resync     = scsih_get_resync,
8551         .get_state      = scsih_get_state,
8552 };
8553
8554 /* shost template for SAS 3.0 HBA devices */
8555 static struct scsi_host_template mpt3sas_driver_template = {
8556         .module                         = THIS_MODULE,
8557         .name                           = "Fusion MPT SAS Host",
8558         .proc_name                      = MPT3SAS_DRIVER_NAME,
8559         .queuecommand                   = scsih_qcmd,
8560         .target_alloc                   = scsih_target_alloc,
8561         .slave_alloc                    = scsih_slave_alloc,
8562         .slave_configure                = scsih_slave_configure,
8563         .target_destroy                 = scsih_target_destroy,
8564         .slave_destroy                  = scsih_slave_destroy,
8565         .scan_finished                  = scsih_scan_finished,
8566         .scan_start                     = scsih_scan_start,
8567         .change_queue_depth             = scsih_change_queue_depth,
8568         .eh_abort_handler               = scsih_abort,
8569         .eh_device_reset_handler        = scsih_dev_reset,
8570         .eh_target_reset_handler        = scsih_target_reset,
8571         .eh_host_reset_handler          = scsih_host_reset,
8572         .bios_param                     = scsih_bios_param,
8573         .can_queue                      = 1,
8574         .this_id                        = -1,
8575         .sg_tablesize                   = MPT3SAS_SG_DEPTH,
8576         .max_sectors                    = 32767,
8577         .cmd_per_lun                    = 7,
8578         .use_clustering                 = ENABLE_CLUSTERING,
8579         .shost_attrs                    = mpt3sas_host_attrs,
8580         .sdev_attrs                     = mpt3sas_dev_attrs,
8581         .track_queue_depth              = 1,
8582 };
8583
8584 /* raid transport support for SAS 3.0 HBA devices */
8585 static struct raid_function_template mpt3sas_raid_functions = {
8586         .cookie         = &mpt3sas_driver_template,
8587         .is_raid        = scsih_is_raid,
8588         .get_resync     = scsih_get_resync,
8589         .get_state      = scsih_get_state,
8590 };
8591
8592 /**
8593  * _scsih_determine_hba_mpi_version - determine in which MPI version class
8594  *                                      this device belongs to.
8595  * @pdev: PCI device struct
8596  *
8597  * return MPI2_VERSION for SAS 2.0 HBA devices,
8598  *      MPI25_VERSION for SAS 3.0 HBA devices, and
8599  *      MPI26 VERSION for Cutlass & Invader SAS 3.0 HBA devices
8600  */
8601 static u16
8602 _scsih_determine_hba_mpi_version(struct pci_dev *pdev)
8603 {
8604
8605         switch (pdev->device) {
8606         case MPI2_MFGPAGE_DEVID_SSS6200:
8607         case MPI2_MFGPAGE_DEVID_SAS2004:
8608         case MPI2_MFGPAGE_DEVID_SAS2008:
8609         case MPI2_MFGPAGE_DEVID_SAS2108_1:
8610         case MPI2_MFGPAGE_DEVID_SAS2108_2:
8611         case MPI2_MFGPAGE_DEVID_SAS2108_3:
8612         case MPI2_MFGPAGE_DEVID_SAS2116_1:
8613         case MPI2_MFGPAGE_DEVID_SAS2116_2:
8614         case MPI2_MFGPAGE_DEVID_SAS2208_1:
8615         case MPI2_MFGPAGE_DEVID_SAS2208_2:
8616         case MPI2_MFGPAGE_DEVID_SAS2208_3:
8617         case MPI2_MFGPAGE_DEVID_SAS2208_4:
8618         case MPI2_MFGPAGE_DEVID_SAS2208_5:
8619         case MPI2_MFGPAGE_DEVID_SAS2208_6:
8620         case MPI2_MFGPAGE_DEVID_SAS2308_1:
8621         case MPI2_MFGPAGE_DEVID_SAS2308_2:
8622         case MPI2_MFGPAGE_DEVID_SAS2308_3:
8623                 return MPI2_VERSION;
8624         case MPI25_MFGPAGE_DEVID_SAS3004:
8625         case MPI25_MFGPAGE_DEVID_SAS3008:
8626         case MPI25_MFGPAGE_DEVID_SAS3108_1:
8627         case MPI25_MFGPAGE_DEVID_SAS3108_2:
8628         case MPI25_MFGPAGE_DEVID_SAS3108_5:
8629         case MPI25_MFGPAGE_DEVID_SAS3108_6:
8630                 return MPI25_VERSION;
8631         case MPI26_MFGPAGE_DEVID_SAS3216:
8632         case MPI26_MFGPAGE_DEVID_SAS3224:
8633         case MPI26_MFGPAGE_DEVID_SAS3316_1:
8634         case MPI26_MFGPAGE_DEVID_SAS3316_2:
8635         case MPI26_MFGPAGE_DEVID_SAS3316_3:
8636         case MPI26_MFGPAGE_DEVID_SAS3316_4:
8637         case MPI26_MFGPAGE_DEVID_SAS3324_1:
8638         case MPI26_MFGPAGE_DEVID_SAS3324_2:
8639         case MPI26_MFGPAGE_DEVID_SAS3324_3:
8640         case MPI26_MFGPAGE_DEVID_SAS3324_4:
8641                 return MPI26_VERSION;
8642         }
8643         return 0;
8644 }
8645
8646 /**
8647  * _scsih_probe - attach and add scsi host
8648  * @pdev: PCI device struct
8649  * @id: pci device id
8650  *
8651  * Returns 0 success, anything else error.
8652  */
8653 static int
8654 _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
8655 {
8656         struct MPT3SAS_ADAPTER *ioc;
8657         struct Scsi_Host *shost = NULL;
8658         int rv;
8659         u16 hba_mpi_version;
8660
8661         /* Determine in which MPI version class this pci device belongs */
8662         hba_mpi_version = _scsih_determine_hba_mpi_version(pdev);
8663         if (hba_mpi_version == 0)
8664                 return -ENODEV;
8665
8666         /* Enumerate only SAS 2.0 HBA's if hbas_to_enumerate is one,
8667          * for other generation HBA's return with -ENODEV
8668          */
8669         if ((hbas_to_enumerate == 1) && (hba_mpi_version !=  MPI2_VERSION))
8670                 return -ENODEV;
8671
8672         /* Enumerate only SAS 3.0 HBA's if hbas_to_enumerate is two,
8673          * for other generation HBA's return with -ENODEV
8674          */
8675         if ((hbas_to_enumerate == 2) && (!(hba_mpi_version ==  MPI25_VERSION
8676                 || hba_mpi_version ==  MPI26_VERSION)))
8677                 return -ENODEV;
8678
8679         switch (hba_mpi_version) {
8680         case MPI2_VERSION:
8681                 /* Use mpt2sas driver host template for SAS 2.0 HBA's */
8682                 shost = scsi_host_alloc(&mpt2sas_driver_template,
8683                   sizeof(struct MPT3SAS_ADAPTER));
8684                 if (!shost)
8685                         return -ENODEV;
8686                 ioc = shost_priv(shost);
8687                 memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8688                 ioc->hba_mpi_version_belonged = hba_mpi_version;
8689                 ioc->id = mpt2_ids++;
8690                 sprintf(ioc->driver_name, "%s", MPT2SAS_DRIVER_NAME);
8691                 if (pdev->device == MPI2_MFGPAGE_DEVID_SSS6200) {
8692                         ioc->is_warpdrive = 1;
8693                         ioc->hide_ir_msg = 1;
8694                 } else
8695                         ioc->mfg_pg10_hide_flag = MFG_PAGE10_EXPOSE_ALL_DISKS;
8696                 break;
8697         case MPI25_VERSION:
8698         case MPI26_VERSION:
8699                 /* Use mpt3sas driver host template for SAS 3.0 HBA's */
8700                 shost = scsi_host_alloc(&mpt3sas_driver_template,
8701                   sizeof(struct MPT3SAS_ADAPTER));
8702                 if (!shost)
8703                         return -ENODEV;
8704                 ioc = shost_priv(shost);
8705                 memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8706                 ioc->hba_mpi_version_belonged = hba_mpi_version;
8707                 ioc->id = mpt3_ids++;
8708                 sprintf(ioc->driver_name, "%s", MPT3SAS_DRIVER_NAME);
8709                 if ((ioc->hba_mpi_version_belonged == MPI25_VERSION &&
8710                         pdev->revision >= SAS3_PCI_DEVICE_C0_REVISION) ||
8711                         (ioc->hba_mpi_version_belonged == MPI26_VERSION))
8712                         ioc->msix96_vector = 1;
8713                 break;
8714         default:
8715                 return -ENODEV;
8716         }
8717
8718         INIT_LIST_HEAD(&ioc->list);
8719         spin_lock(&gioc_lock);
8720         list_add_tail(&ioc->list, &mpt3sas_ioc_list);
8721         spin_unlock(&gioc_lock);
8722         ioc->shost = shost;
8723         ioc->pdev = pdev;
8724         ioc->scsi_io_cb_idx = scsi_io_cb_idx;
8725         ioc->tm_cb_idx = tm_cb_idx;
8726         ioc->ctl_cb_idx = ctl_cb_idx;
8727         ioc->base_cb_idx = base_cb_idx;
8728         ioc->port_enable_cb_idx = port_enable_cb_idx;
8729         ioc->transport_cb_idx = transport_cb_idx;
8730         ioc->scsih_cb_idx = scsih_cb_idx;
8731         ioc->config_cb_idx = config_cb_idx;
8732         ioc->tm_tr_cb_idx = tm_tr_cb_idx;
8733         ioc->tm_tr_volume_cb_idx = tm_tr_volume_cb_idx;
8734         ioc->tm_sas_control_cb_idx = tm_sas_control_cb_idx;
8735         ioc->logging_level = logging_level;
8736         ioc->schedule_dead_ioc_flush_running_cmds = &_scsih_flush_running_cmds;
8737         /* misc semaphores and spin locks */
8738         mutex_init(&ioc->reset_in_progress_mutex);
8739         /* initializing pci_access_mutex lock */
8740         mutex_init(&ioc->pci_access_mutex);
8741         spin_lock_init(&ioc->ioc_reset_in_progress_lock);
8742         spin_lock_init(&ioc->scsi_lookup_lock);
8743         spin_lock_init(&ioc->sas_device_lock);
8744         spin_lock_init(&ioc->sas_node_lock);
8745         spin_lock_init(&ioc->fw_event_lock);
8746         spin_lock_init(&ioc->raid_device_lock);
8747         spin_lock_init(&ioc->diag_trigger_lock);
8748
8749         INIT_LIST_HEAD(&ioc->sas_device_list);
8750         INIT_LIST_HEAD(&ioc->sas_device_init_list);
8751         INIT_LIST_HEAD(&ioc->sas_expander_list);
8752         INIT_LIST_HEAD(&ioc->fw_event_list);
8753         INIT_LIST_HEAD(&ioc->raid_device_list);
8754         INIT_LIST_HEAD(&ioc->sas_hba.sas_port_list);
8755         INIT_LIST_HEAD(&ioc->delayed_tr_list);
8756         INIT_LIST_HEAD(&ioc->delayed_sc_list);
8757         INIT_LIST_HEAD(&ioc->delayed_event_ack_list);
8758         INIT_LIST_HEAD(&ioc->delayed_tr_volume_list);
8759         INIT_LIST_HEAD(&ioc->reply_queue_list);
8760
8761         sprintf(ioc->name, "%s_cm%d", ioc->driver_name, ioc->id);
8762
8763         /* init shost parameters */
8764         shost->max_cmd_len = 32;
8765         shost->max_lun = max_lun;
8766         shost->transportt = mpt3sas_transport_template;
8767         shost->unique_id = ioc->id;
8768
8769         if (max_sectors != 0xFFFF) {
8770                 if (max_sectors < 64) {
8771                         shost->max_sectors = 64;
8772                         pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8773                             "for max_sectors, range is 64 to 32767. Assigning "
8774                             "value of 64.\n", ioc->name, max_sectors);
8775                 } else if (max_sectors > 32767) {
8776                         shost->max_sectors = 32767;
8777                         pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8778                             "for max_sectors, range is 64 to 32767. Assigning "
8779                             "default value of 32767.\n", ioc->name,
8780                             max_sectors);
8781                 } else {
8782                         shost->max_sectors = max_sectors & 0xFFFE;
8783                         pr_info(MPT3SAS_FMT
8784                                 "The max_sectors value is set to %d\n",
8785                                 ioc->name, shost->max_sectors);
8786                 }
8787         }
8788
8789         /* register EEDP capabilities with SCSI layer */
8790         if (prot_mask > 0)
8791                 scsi_host_set_prot(shost, prot_mask);
8792         else
8793                 scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION
8794                                    | SHOST_DIF_TYPE2_PROTECTION
8795                                    | SHOST_DIF_TYPE3_PROTECTION);
8796
8797         scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
8798
8799         /* event thread */
8800         snprintf(ioc->firmware_event_name, sizeof(ioc->firmware_event_name),
8801             "fw_event_%s%d", ioc->driver_name, ioc->id);
8802         ioc->firmware_event_thread = alloc_ordered_workqueue(
8803             ioc->firmware_event_name, WQ_MEM_RECLAIM);
8804         if (!ioc->firmware_event_thread) {
8805                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8806                     ioc->name, __FILE__, __LINE__, __func__);
8807                 rv = -ENODEV;
8808                 goto out_thread_fail;
8809         }
8810
8811         ioc->is_driver_loading = 1;
8812         if ((mpt3sas_base_attach(ioc))) {
8813                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8814                     ioc->name, __FILE__, __LINE__, __func__);
8815                 rv = -ENODEV;
8816                 goto out_attach_fail;
8817         }
8818
8819         if (ioc->is_warpdrive) {
8820                 if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_EXPOSE_ALL_DISKS)
8821                         ioc->hide_drives = 0;
8822                 else if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_HIDE_ALL_DISKS)
8823                         ioc->hide_drives = 1;
8824                 else {
8825                         if (mpt3sas_get_num_volumes(ioc))
8826                                 ioc->hide_drives = 1;
8827                         else
8828                                 ioc->hide_drives = 0;
8829                 }
8830         } else
8831                 ioc->hide_drives = 0;
8832
8833         rv = scsi_add_host(shost, &pdev->dev);
8834         if (rv) {
8835                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8836                     ioc->name, __FILE__, __LINE__, __func__);
8837                 goto out_add_shost_fail;
8838         }
8839
8840         scsi_scan_host(shost);
8841         return 0;
8842 out_add_shost_fail:
8843         mpt3sas_base_detach(ioc);
8844  out_attach_fail:
8845         destroy_workqueue(ioc->firmware_event_thread);
8846  out_thread_fail:
8847         spin_lock(&gioc_lock);
8848         list_del(&ioc->list);
8849         spin_unlock(&gioc_lock);
8850         scsi_host_put(shost);
8851         return rv;
8852 }
8853
8854 #ifdef CONFIG_PM
8855 /**
8856  * scsih_suspend - power management suspend main entry point
8857  * @pdev: PCI device struct
8858  * @state: PM state change to (usually PCI_D3)
8859  *
8860  * Returns 0 success, anything else error.
8861  */
8862 static int
8863 scsih_suspend(struct pci_dev *pdev, pm_message_t state)
8864 {
8865         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8866         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8867         pci_power_t device_state;
8868
8869         mpt3sas_base_stop_watchdog(ioc);
8870         flush_scheduled_work();
8871         scsi_block_requests(shost);
8872         device_state = pci_choose_state(pdev, state);
8873         pr_info(MPT3SAS_FMT
8874                 "pdev=0x%p, slot=%s, entering operating state [D%d]\n",
8875                 ioc->name, pdev, pci_name(pdev), device_state);
8876
8877         pci_save_state(pdev);
8878         mpt3sas_base_free_resources(ioc);
8879         pci_set_power_state(pdev, device_state);
8880         return 0;
8881 }
8882
8883 /**
8884  * scsih_resume - power management resume main entry point
8885  * @pdev: PCI device struct
8886  *
8887  * Returns 0 success, anything else error.
8888  */
8889 static int
8890 scsih_resume(struct pci_dev *pdev)
8891 {
8892         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8893         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8894         pci_power_t device_state = pdev->current_state;
8895         int r;
8896
8897         pr_info(MPT3SAS_FMT
8898                 "pdev=0x%p, slot=%s, previous operating state [D%d]\n",
8899                 ioc->name, pdev, pci_name(pdev), device_state);
8900
8901         pci_set_power_state(pdev, PCI_D0);
8902         pci_enable_wake(pdev, PCI_D0, 0);
8903         pci_restore_state(pdev);
8904         ioc->pdev = pdev;
8905         r = mpt3sas_base_map_resources(ioc);
8906         if (r)
8907                 return r;
8908
8909         mpt3sas_base_hard_reset_handler(ioc, SOFT_RESET);
8910         scsi_unblock_requests(shost);
8911         mpt3sas_base_start_watchdog(ioc);
8912         return 0;
8913 }
8914 #endif /* CONFIG_PM */
8915
8916 /**
8917  * scsih_pci_error_detected - Called when a PCI error is detected.
8918  * @pdev: PCI device struct
8919  * @state: PCI channel state
8920  *
8921  * Description: Called when a PCI error is detected.
8922  *
8923  * Return value:
8924  *      PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8925  */
8926 static pci_ers_result_t
8927 scsih_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
8928 {
8929         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8930         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8931
8932         pr_info(MPT3SAS_FMT "PCI error: detected callback, state(%d)!!\n",
8933             ioc->name, state);
8934
8935         switch (state) {
8936         case pci_channel_io_normal:
8937                 return PCI_ERS_RESULT_CAN_RECOVER;
8938         case pci_channel_io_frozen:
8939                 /* Fatal error, prepare for slot reset */
8940                 ioc->pci_error_recovery = 1;
8941                 scsi_block_requests(ioc->shost);
8942                 mpt3sas_base_stop_watchdog(ioc);
8943                 mpt3sas_base_free_resources(ioc);
8944                 return PCI_ERS_RESULT_NEED_RESET;
8945         case pci_channel_io_perm_failure:
8946                 /* Permanent error, prepare for device removal */
8947                 ioc->pci_error_recovery = 1;
8948                 mpt3sas_base_stop_watchdog(ioc);
8949                 _scsih_flush_running_cmds(ioc);
8950                 return PCI_ERS_RESULT_DISCONNECT;
8951         }
8952         return PCI_ERS_RESULT_NEED_RESET;
8953 }
8954
8955 /**
8956  * scsih_pci_slot_reset - Called when PCI slot has been reset.
8957  * @pdev: PCI device struct
8958  *
8959  * Description: This routine is called by the pci error recovery
8960  * code after the PCI slot has been reset, just before we
8961  * should resume normal operations.
8962  */
8963 static pci_ers_result_t
8964 scsih_pci_slot_reset(struct pci_dev *pdev)
8965 {
8966         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8967         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8968         int rc;
8969
8970         pr_info(MPT3SAS_FMT "PCI error: slot reset callback!!\n",
8971              ioc->name);
8972
8973         ioc->pci_error_recovery = 0;
8974         ioc->pdev = pdev;
8975         pci_restore_state(pdev);
8976         rc = mpt3sas_base_map_resources(ioc);
8977         if (rc)
8978                 return PCI_ERS_RESULT_DISCONNECT;
8979
8980         rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
8981
8982         pr_warn(MPT3SAS_FMT "hard reset: %s\n", ioc->name,
8983             (rc == 0) ? "success" : "failed");
8984
8985         if (!rc)
8986                 return PCI_ERS_RESULT_RECOVERED;
8987         else
8988                 return PCI_ERS_RESULT_DISCONNECT;
8989 }
8990
8991 /**
8992  * scsih_pci_resume() - resume normal ops after PCI reset
8993  * @pdev: pointer to PCI device
8994  *
8995  * Called when the error recovery driver tells us that its
8996  * OK to resume normal operation. Use completion to allow
8997  * halted scsi ops to resume.
8998  */
8999 static void
9000 scsih_pci_resume(struct pci_dev *pdev)
9001 {
9002         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9003         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9004
9005         pr_info(MPT3SAS_FMT "PCI error: resume callback!!\n", ioc->name);
9006
9007         pci_cleanup_aer_uncorrect_error_status(pdev);
9008         mpt3sas_base_start_watchdog(ioc);
9009         scsi_unblock_requests(ioc->shost);
9010 }
9011
9012 /**
9013  * scsih_pci_mmio_enabled - Enable MMIO and dump debug registers
9014  * @pdev: pointer to PCI device
9015  */
9016 static pci_ers_result_t
9017 scsih_pci_mmio_enabled(struct pci_dev *pdev)
9018 {
9019         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9020         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9021
9022         pr_info(MPT3SAS_FMT "PCI error: mmio enabled callback!!\n",
9023             ioc->name);
9024
9025         /* TODO - dump whatever for debugging purposes */
9026
9027         /* This called only if scsih_pci_error_detected returns
9028          * PCI_ERS_RESULT_CAN_RECOVER. Read/write to the device still
9029          * works, no need to reset slot.
9030          */
9031         return PCI_ERS_RESULT_RECOVERED;
9032 }
9033
9034 /*
9035  * The pci device ids are defined in mpi/mpi2_cnfg.h.
9036  */
9037 static const struct pci_device_id mpt3sas_pci_table[] = {
9038         /* Spitfire ~ 2004 */
9039         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2004,
9040                 PCI_ANY_ID, PCI_ANY_ID },
9041         /* Falcon ~ 2008 */
9042         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2008,
9043                 PCI_ANY_ID, PCI_ANY_ID },
9044         /* Liberator ~ 2108 */
9045         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_1,
9046                 PCI_ANY_ID, PCI_ANY_ID },
9047         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_2,
9048                 PCI_ANY_ID, PCI_ANY_ID },
9049         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_3,
9050                 PCI_ANY_ID, PCI_ANY_ID },
9051         /* Meteor ~ 2116 */
9052         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_1,
9053                 PCI_ANY_ID, PCI_ANY_ID },
9054         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_2,
9055                 PCI_ANY_ID, PCI_ANY_ID },
9056         /* Thunderbolt ~ 2208 */
9057         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_1,
9058                 PCI_ANY_ID, PCI_ANY_ID },
9059         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_2,
9060                 PCI_ANY_ID, PCI_ANY_ID },
9061         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_3,
9062                 PCI_ANY_ID, PCI_ANY_ID },
9063         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_4,
9064                 PCI_ANY_ID, PCI_ANY_ID },
9065         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_5,
9066                 PCI_ANY_ID, PCI_ANY_ID },
9067         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_6,
9068                 PCI_ANY_ID, PCI_ANY_ID },
9069         /* Mustang ~ 2308 */
9070         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_1,
9071                 PCI_ANY_ID, PCI_ANY_ID },
9072         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_2,
9073                 PCI_ANY_ID, PCI_ANY_ID },
9074         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_3,
9075                 PCI_ANY_ID, PCI_ANY_ID },
9076         /* SSS6200 */
9077         { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SSS6200,
9078                 PCI_ANY_ID, PCI_ANY_ID },
9079         /* Fury ~ 3004 and 3008 */
9080         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3004,
9081                 PCI_ANY_ID, PCI_ANY_ID },
9082         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3008,
9083                 PCI_ANY_ID, PCI_ANY_ID },
9084         /* Invader ~ 3108 */
9085         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_1,
9086                 PCI_ANY_ID, PCI_ANY_ID },
9087         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_2,
9088                 PCI_ANY_ID, PCI_ANY_ID },
9089         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_5,
9090                 PCI_ANY_ID, PCI_ANY_ID },
9091         { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_6,
9092                 PCI_ANY_ID, PCI_ANY_ID },
9093         /* Cutlass ~ 3216 and 3224 */
9094         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3216,
9095                 PCI_ANY_ID, PCI_ANY_ID },
9096         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3224,
9097                 PCI_ANY_ID, PCI_ANY_ID },
9098         /* Intruder ~ 3316 and 3324 */
9099         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_1,
9100                 PCI_ANY_ID, PCI_ANY_ID },
9101         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_2,
9102                 PCI_ANY_ID, PCI_ANY_ID },
9103         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_3,
9104                 PCI_ANY_ID, PCI_ANY_ID },
9105         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_4,
9106                 PCI_ANY_ID, PCI_ANY_ID },
9107         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_1,
9108                 PCI_ANY_ID, PCI_ANY_ID },
9109         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_2,
9110                 PCI_ANY_ID, PCI_ANY_ID },
9111         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_3,
9112                 PCI_ANY_ID, PCI_ANY_ID },
9113         { MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_4,
9114                 PCI_ANY_ID, PCI_ANY_ID },
9115         {0}     /* Terminating entry */
9116 };
9117 MODULE_DEVICE_TABLE(pci, mpt3sas_pci_table);
9118
9119 static struct pci_error_handlers _mpt3sas_err_handler = {
9120         .error_detected = scsih_pci_error_detected,
9121         .mmio_enabled   = scsih_pci_mmio_enabled,
9122         .slot_reset     = scsih_pci_slot_reset,
9123         .resume         = scsih_pci_resume,
9124 };
9125
9126 static struct pci_driver mpt3sas_driver = {
9127         .name           = MPT3SAS_DRIVER_NAME,
9128         .id_table       = mpt3sas_pci_table,
9129         .probe          = _scsih_probe,
9130         .remove         = scsih_remove,
9131         .shutdown       = scsih_shutdown,
9132         .err_handler    = &_mpt3sas_err_handler,
9133 #ifdef CONFIG_PM
9134         .suspend        = scsih_suspend,
9135         .resume         = scsih_resume,
9136 #endif
9137 };
9138
9139 /**
9140  * scsih_init - main entry point for this driver.
9141  *
9142  * Returns 0 success, anything else error.
9143  */
9144 static int
9145 scsih_init(void)
9146 {
9147         mpt2_ids = 0;
9148         mpt3_ids = 0;
9149
9150         mpt3sas_base_initialize_callback_handler();
9151
9152          /* queuecommand callback hander */
9153         scsi_io_cb_idx = mpt3sas_base_register_callback_handler(_scsih_io_done);
9154
9155         /* task managment callback handler */
9156         tm_cb_idx = mpt3sas_base_register_callback_handler(_scsih_tm_done);
9157
9158         /* base internal commands callback handler */
9159         base_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_base_done);
9160         port_enable_cb_idx = mpt3sas_base_register_callback_handler(
9161             mpt3sas_port_enable_done);
9162
9163         /* transport internal commands callback handler */
9164         transport_cb_idx = mpt3sas_base_register_callback_handler(
9165             mpt3sas_transport_done);
9166
9167         /* scsih internal commands callback handler */
9168         scsih_cb_idx = mpt3sas_base_register_callback_handler(_scsih_done);
9169
9170         /* configuration page API internal commands callback handler */
9171         config_cb_idx = mpt3sas_base_register_callback_handler(
9172             mpt3sas_config_done);
9173
9174         /* ctl module callback handler */
9175         ctl_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_ctl_done);
9176
9177         tm_tr_cb_idx = mpt3sas_base_register_callback_handler(
9178             _scsih_tm_tr_complete);
9179
9180         tm_tr_volume_cb_idx = mpt3sas_base_register_callback_handler(
9181             _scsih_tm_volume_tr_complete);
9182
9183         tm_sas_control_cb_idx = mpt3sas_base_register_callback_handler(
9184             _scsih_sas_control_complete);
9185
9186         return 0;
9187 }
9188
9189 /**
9190  * scsih_exit - exit point for this driver (when it is a module).
9191  *
9192  * Returns 0 success, anything else error.
9193  */
9194 static void
9195 scsih_exit(void)
9196 {
9197
9198         mpt3sas_base_release_callback_handler(scsi_io_cb_idx);
9199         mpt3sas_base_release_callback_handler(tm_cb_idx);
9200         mpt3sas_base_release_callback_handler(base_cb_idx);
9201         mpt3sas_base_release_callback_handler(port_enable_cb_idx);
9202         mpt3sas_base_release_callback_handler(transport_cb_idx);
9203         mpt3sas_base_release_callback_handler(scsih_cb_idx);
9204         mpt3sas_base_release_callback_handler(config_cb_idx);
9205         mpt3sas_base_release_callback_handler(ctl_cb_idx);
9206
9207         mpt3sas_base_release_callback_handler(tm_tr_cb_idx);
9208         mpt3sas_base_release_callback_handler(tm_tr_volume_cb_idx);
9209         mpt3sas_base_release_callback_handler(tm_sas_control_cb_idx);
9210
9211 /* raid transport support */
9212         if (hbas_to_enumerate != 1)
9213                 raid_class_release(mpt3sas_raid_template);
9214         if (hbas_to_enumerate != 2)
9215                 raid_class_release(mpt2sas_raid_template);
9216         sas_release_transport(mpt3sas_transport_template);
9217 }
9218
9219 /**
9220  * _mpt3sas_init - main entry point for this driver.
9221  *
9222  * Returns 0 success, anything else error.
9223  */
9224 static int __init
9225 _mpt3sas_init(void)
9226 {
9227         int error;
9228
9229         pr_info("%s version %s loaded\n", MPT3SAS_DRIVER_NAME,
9230                                         MPT3SAS_DRIVER_VERSION);
9231
9232         mpt3sas_transport_template =
9233             sas_attach_transport(&mpt3sas_transport_functions);
9234         if (!mpt3sas_transport_template)
9235                 return -ENODEV;
9236
9237         /* No need attach mpt3sas raid functions template
9238          * if hbas_to_enumarate value is one.
9239          */
9240         if (hbas_to_enumerate != 1) {
9241                 mpt3sas_raid_template =
9242                                 raid_class_attach(&mpt3sas_raid_functions);
9243                 if (!mpt3sas_raid_template) {
9244                         sas_release_transport(mpt3sas_transport_template);
9245                         return -ENODEV;
9246                 }
9247         }
9248
9249         /* No need to attach mpt2sas raid functions template
9250          * if hbas_to_enumarate value is two
9251          */
9252         if (hbas_to_enumerate != 2) {
9253                 mpt2sas_raid_template =
9254                                 raid_class_attach(&mpt2sas_raid_functions);
9255                 if (!mpt2sas_raid_template) {
9256                         sas_release_transport(mpt3sas_transport_template);
9257                         return -ENODEV;
9258                 }
9259         }
9260
9261         error = scsih_init();
9262         if (error) {
9263                 scsih_exit();
9264                 return error;
9265         }
9266
9267         mpt3sas_ctl_init(hbas_to_enumerate);
9268
9269         error = pci_register_driver(&mpt3sas_driver);
9270         if (error)
9271                 scsih_exit();
9272
9273         return error;
9274 }
9275
9276 /**
9277  * _mpt3sas_exit - exit point for this driver (when it is a module).
9278  *
9279  */
9280 static void __exit
9281 _mpt3sas_exit(void)
9282 {
9283         pr_info("mpt3sas version %s unloading\n",
9284                                 MPT3SAS_DRIVER_VERSION);
9285
9286         pci_unregister_driver(&mpt3sas_driver);
9287
9288         mpt3sas_ctl_exit(hbas_to_enumerate);
9289
9290         scsih_exit();
9291 }
9292
9293 module_init(_mpt3sas_init);
9294 module_exit(_mpt3sas_exit);