drivers/scsi/mpt2sas/mpt2sas_base.c

   1 /*
   2  * This is the Fusion MPT base driver providing common API layer interface
   3  * for access to MPT (Message Passing Technology) firmware.
   4  *
   5  * This code is based on drivers/scsi/mpt2sas/mpt2_base.c
   6  * Copyright (C) 2007-2009  LSI Corporation
   7  *  (mailto:DL-MPTFusionLinux@lsi.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/version.h>
  46 #include <linux/kernel.h>
  47 #include <linux/module.h>
  48 #include <linux/errno.h>
  49 #include <linux/init.h>
  50 #include <linux/slab.h>
  51 #include <linux/types.h>
  52 #include <linux/pci.h>
  53 #include <linux/kdev_t.h>
  54 #include <linux/blkdev.h>
  55 #include <linux/delay.h>
  56 #include <linux/interrupt.h>
  57 #include <linux/dma-mapping.h>
  58 #include <linux/sort.h>
  59 #include <linux/io.h>
  60
  61 #include "mpt2sas_base.h"
  62
  63 static MPT_CALLBACK     mpt_callbacks[MPT_MAX_CALLBACKS];
  64
  65 #define FAULT_POLLING_INTERVAL 1000 /* in milliseconds */
  66 #define MPT2SAS_MAX_REQUEST_QUEUE 500 /* maximum controller queue depth */
  67
  68 static int max_queue_depth = -1;
  69 module_param(max_queue_depth, int, 0);
  70 MODULE_PARM_DESC(max_queue_depth, " max controller queue depth ");
  71
  72 static int max_sgl_entries = -1;
  73 module_param(max_sgl_entries, int, 0);
  74 MODULE_PARM_DESC(max_sgl_entries, " max sg entries ");
  75
  76 static int msix_disable = -1;
  77 module_param(msix_disable, int, 0);
  78 MODULE_PARM_DESC(msix_disable, " disable msix routed interrupts (default=0)");
  79
  80 /**
  81  * _base_fault_reset_work - workq handling ioc fault conditions
  82  * @work: input argument, used to derive ioc
  83  * Context: sleep.
  84  *
  85  * Return nothing.
  86  */
  87 static void
  88 _base_fault_reset_work(struct work_struct *work)
  89 {
  90         struct MPT2SAS_ADAPTER *ioc =
  91             container_of(work, struct MPT2SAS_ADAPTER, fault_reset_work.work);
  92         unsigned long    flags;
  93         u32 doorbell;
  94         int rc;
  95
  96         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
  97         if (ioc->shost_recovery)
  98                 goto rearm_timer;
  99         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 100
 101         doorbell = mpt2sas_base_get_iocstate(ioc, 0);
 102         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
 103                 rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
 104                     FORCE_BIG_HAMMER);
 105                 printk(MPT2SAS_WARN_FMT "%s: hard reset: %s\n", ioc->name,
 106                     __func__, (rc == 0) ? "success" : "failed");
 107                 doorbell = mpt2sas_base_get_iocstate(ioc, 0);
 108                 if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
 109                         mpt2sas_base_fault_info(ioc, doorbell &
 110                             MPI2_DOORBELL_DATA_MASK);
 111         }
 112
 113         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 114  rearm_timer:
 115         if (ioc->fault_reset_work_q)
 116                 queue_delayed_work(ioc->fault_reset_work_q,
 117                     &ioc->fault_reset_work,
 118                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
 119         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 120 }
 121
 122 /**
 123  * mpt2sas_base_start_watchdog - start the fault_reset_work_q
 124  * @ioc: pointer to scsi command object
 125  * Context: sleep.
 126  *
 127  * Return nothing.
 128  */
 129 void
 130 mpt2sas_base_start_watchdog(struct MPT2SAS_ADAPTER *ioc)
 131 {
 132         unsigned long    flags;
 133
 134         if (ioc->fault_reset_work_q)
 135                 return;
 136
 137         /* initialize fault polling */
 138         INIT_DELAYED_WORK(&ioc->fault_reset_work, _base_fault_reset_work);
 139         snprintf(ioc->fault_reset_work_q_name,
 140             sizeof(ioc->fault_reset_work_q_name), "poll_%d_status", ioc->id);
 141         ioc->fault_reset_work_q =
 142                 create_singlethread_workqueue(ioc->fault_reset_work_q_name);
 143         if (!ioc->fault_reset_work_q) {
 144                 printk(MPT2SAS_ERR_FMT "%s: failed (line=%d)\n",
 145                     ioc->name, __func__, __LINE__);
 146                         return;
 147         }
 148         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 149         if (ioc->fault_reset_work_q)
 150                 queue_delayed_work(ioc->fault_reset_work_q,
 151                     &ioc->fault_reset_work,
 152                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
 153         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 154 }
 155
 156 /**
 157  * mpt2sas_base_stop_watchdog - stop the fault_reset_work_q
 158  * @ioc: pointer to scsi command object
 159  * Context: sleep.
 160  *
 161  * Return nothing.
 162  */
 163 void
 164 mpt2sas_base_stop_watchdog(struct MPT2SAS_ADAPTER *ioc)
 165 {
 166         unsigned long    flags;
 167         struct workqueue_struct *wq;
 168
 169         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 170         wq = ioc->fault_reset_work_q;
 171         ioc->fault_reset_work_q = NULL;
 172         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 173         if (wq) {
 174                 if (!cancel_delayed_work(&ioc->fault_reset_work))
 175                         flush_workqueue(wq);
 176                 destroy_workqueue(wq);
 177         }
 178 }
 179
 180 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 181 /**
 182  * _base_sas_ioc_info - verbose translation of the ioc status
 183  * @ioc: pointer to scsi command object
 184  * @mpi_reply: reply mf payload returned from firmware
 185  * @request_hdr: request mf
 186  *
 187  * Return nothing.
 188  */
 189 static void
 190 _base_sas_ioc_info(struct MPT2SAS_ADAPTER *ioc, MPI2DefaultReply_t *mpi_reply,
 191      MPI2RequestHeader_t *request_hdr)
 192 {
 193         u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
 194             MPI2_IOCSTATUS_MASK;
 195         char *desc = NULL;
 196         u16 frame_sz;
 197         char *func_str = NULL;
 198
 199         /* SCSI_IO, RAID_PASS are handled from _scsih_scsi_ioc_info */
 200         if (request_hdr->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 201             request_hdr->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
 202             request_hdr->Function == MPI2_FUNCTION_EVENT_NOTIFICATION)
 203                 return;
 204
 205         switch (ioc_status) {
 206
 207 /****************************************************************************
 208 *  Common IOCStatus values for all replies
 209 ****************************************************************************/
 210
 211         case MPI2_IOCSTATUS_INVALID_FUNCTION:
 212                 desc = "invalid function";
 213                 break;
 214         case MPI2_IOCSTATUS_BUSY:
 215                 desc = "busy";
 216                 break;
 217         case MPI2_IOCSTATUS_INVALID_SGL:
 218                 desc = "invalid sgl";
 219                 break;
 220         case MPI2_IOCSTATUS_INTERNAL_ERROR:
 221                 desc = "internal error";
 222                 break;
 223         case MPI2_IOCSTATUS_INVALID_VPID:
 224                 desc = "invalid vpid";
 225                 break;
 226         case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
 227                 desc = "insufficient resources";
 228                 break;
 229         case MPI2_IOCSTATUS_INVALID_FIELD:
 230                 desc = "invalid field";
 231                 break;
 232         case MPI2_IOCSTATUS_INVALID_STATE:
 233                 desc = "invalid state";
 234                 break;
 235         case MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED:
 236                 desc = "op state not supported";
 237                 break;
 238
 239 /****************************************************************************
 240 *  Config IOCStatus values
 241 ****************************************************************************/
 242
 243         case MPI2_IOCSTATUS_CONFIG_INVALID_ACTION:
 244                 desc = "config invalid action";
 245                 break;
 246         case MPI2_IOCSTATUS_CONFIG_INVALID_TYPE:
 247                 desc = "config invalid type";
 248                 break;
 249         case MPI2_IOCSTATUS_CONFIG_INVALID_PAGE:
 250                 desc = "config invalid page";
 251                 break;
 252         case MPI2_IOCSTATUS_CONFIG_INVALID_DATA:
 253                 desc = "config invalid data";
 254                 break;
 255         case MPI2_IOCSTATUS_CONFIG_NO_DEFAULTS:
 256                 desc = "config no defaults";
 257                 break;
 258         case MPI2_IOCSTATUS_CONFIG_CANT_COMMIT:
 259                 desc = "config cant commit";
 260                 break;
 261
 262 /****************************************************************************
 263 *  SCSI IO Reply
 264 ****************************************************************************/
 265
 266         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
 267         case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
 268         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
 269         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
 270         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
 271         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
 272         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
 273         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
 274         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
 275         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
 276         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
 277         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
 278                 break;
 279
 280 /****************************************************************************
 281 *  For use by SCSI Initiator and SCSI Target end-to-end data protection
 282 ****************************************************************************/
 283
 284         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
 285                 desc = "eedp guard error";
 286                 break;
 287         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
 288                 desc = "eedp ref tag error";
 289                 break;
 290         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
 291                 desc = "eedp app tag error";
 292                 break;
 293
 294 /****************************************************************************
 295 *  SCSI Target values
 296 ****************************************************************************/
 297
 298         case MPI2_IOCSTATUS_TARGET_INVALID_IO_INDEX:
 299                 desc = "target invalid io index";
 300                 break;
 301         case MPI2_IOCSTATUS_TARGET_ABORTED:
 302                 desc = "target aborted";
 303                 break;
 304         case MPI2_IOCSTATUS_TARGET_NO_CONN_RETRYABLE:
 305                 desc = "target no conn retryable";
 306                 break;
 307         case MPI2_IOCSTATUS_TARGET_NO_CONNECTION:
 308                 desc = "target no connection";
 309                 break;
 310         case MPI2_IOCSTATUS_TARGET_XFER_COUNT_MISMATCH:
 311                 desc = "target xfer count mismatch";
 312                 break;
 313         case MPI2_IOCSTATUS_TARGET_DATA_OFFSET_ERROR:
 314                 desc = "target data offset error";
 315                 break;
 316         case MPI2_IOCSTATUS_TARGET_TOO_MUCH_WRITE_DATA:
 317                 desc = "target too much write data";
 318                 break;
 319         case MPI2_IOCSTATUS_TARGET_IU_TOO_SHORT:
 320                 desc = "target iu too short";
 321                 break;
 322         case MPI2_IOCSTATUS_TARGET_ACK_NAK_TIMEOUT:
 323                 desc = "target ack nak timeout";
 324                 break;
 325         case MPI2_IOCSTATUS_TARGET_NAK_RECEIVED:
 326                 desc = "target nak received";
 327                 break;
 328
 329 /****************************************************************************
 330 *  Serial Attached SCSI values
 331 ****************************************************************************/
 332
 333         case MPI2_IOCSTATUS_SAS_SMP_REQUEST_FAILED:
 334                 desc = "smp request failed";
 335                 break;
 336         case MPI2_IOCSTATUS_SAS_SMP_DATA_OVERRUN:
 337                 desc = "smp data overrun";
 338                 break;
 339
 340 /****************************************************************************
 341 *  Diagnostic Buffer Post / Diagnostic Release values
 342 ****************************************************************************/
 343
 344         case MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED:
 345                 desc = "diagnostic released";
 346                 break;
 347         default:
 348                 break;
 349         }
 350
 351         if (!desc)
 352                 return;
 353
 354         switch (request_hdr->Function) {
 355         case MPI2_FUNCTION_CONFIG:
 356                 frame_sz = sizeof(Mpi2ConfigRequest_t) + ioc->sge_size;
 357                 func_str = "config_page";
 358                 break;
 359         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 360                 frame_sz = sizeof(Mpi2SCSITaskManagementRequest_t);
 361                 func_str = "task_mgmt";
 362                 break;
 363         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 364                 frame_sz = sizeof(Mpi2SasIoUnitControlRequest_t);
 365                 func_str = "sas_iounit_ctl";
 366                 break;
 367         case MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR:
 368                 frame_sz = sizeof(Mpi2SepRequest_t);
 369                 func_str = "enclosure";
 370                 break;
 371         case MPI2_FUNCTION_IOC_INIT:
 372                 frame_sz = sizeof(Mpi2IOCInitRequest_t);
 373                 func_str = "ioc_init";
 374                 break;
 375         case MPI2_FUNCTION_PORT_ENABLE:
 376                 frame_sz = sizeof(Mpi2PortEnableRequest_t);
 377                 func_str = "port_enable";
 378                 break;
 379         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 380                 frame_sz = sizeof(Mpi2SmpPassthroughRequest_t) + ioc->sge_size;
 381                 func_str = "smp_passthru";
 382                 break;
 383         default:
 384                 frame_sz = 32;
 385                 func_str = "unknown";
 386                 break;
 387         }
 388
 389         printk(MPT2SAS_WARN_FMT "ioc_status: %s(0x%04x), request(0x%p),"
 390             " (%s)\n", ioc->name, desc, ioc_status, request_hdr, func_str);
 391
 392         _debug_dump_mf(request_hdr, frame_sz/4);
 393 }
 394
 395 /**
 396  * _base_display_event_data - verbose translation of firmware asyn events
 397  * @ioc: pointer to scsi command object
 398  * @mpi_reply: reply mf payload returned from firmware
 399  *
 400  * Return nothing.
 401  */
 402 static void
 403 _base_display_event_data(struct MPT2SAS_ADAPTER *ioc,
 404     Mpi2EventNotificationReply_t *mpi_reply)
 405 {
 406         char *desc = NULL;
 407         u16 event;
 408
 409         if (!(ioc->logging_level & MPT_DEBUG_EVENTS))
 410                 return;
 411
 412         event = le16_to_cpu(mpi_reply->Event);
 413
 414         switch (event) {
 415         case MPI2_EVENT_LOG_DATA:
 416                 desc = "Log Data";
 417                 break;
 418         case MPI2_EVENT_STATE_CHANGE:
 419                 desc = "Status Change";
 420                 break;
 421         case MPI2_EVENT_HARD_RESET_RECEIVED:
 422                 desc = "Hard Reset Received";
 423                 break;
 424         case MPI2_EVENT_EVENT_CHANGE:
 425                 desc = "Event Change";
 426                 break;
 427         case MPI2_EVENT_TASK_SET_FULL:
 428                 desc = "Task Set Full";
 429                 break;
 430         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
 431                 desc = "Device Status Change";
 432                 break;
 433         case MPI2_EVENT_IR_OPERATION_STATUS:
 434                 desc = "IR Operation Status";
 435                 break;
 436         case MPI2_EVENT_SAS_DISCOVERY:
 437                 desc =  "Discovery";
 438                 break;
 439         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
 440                 desc = "SAS Broadcast Primitive";
 441                 break;
 442         case MPI2_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE:
 443                 desc = "SAS Init Device Status Change";
 444                 break;
 445         case MPI2_EVENT_SAS_INIT_TABLE_OVERFLOW:
 446                 desc = "SAS Init Table Overflow";
 447                 break;
 448         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
 449                 desc = "SAS Topology Change List";
 450                 break;
 451         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
 452                 desc = "SAS Enclosure Device Status Change";
 453                 break;
 454         case MPI2_EVENT_IR_VOLUME:
 455                 desc = "IR Volume";
 456                 break;
 457         case MPI2_EVENT_IR_PHYSICAL_DISK:
 458                 desc = "IR Physical Disk";
 459                 break;
 460         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
 461                 desc = "IR Configuration Change List";
 462                 break;
 463         case MPI2_EVENT_LOG_ENTRY_ADDED:
 464                 desc = "Log Entry Added";
 465                 break;
 466         }
 467
 468         if (!desc)
 469                 return;
 470
 471         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, desc);
 472 }
 473 #endif
 474
 475 /**
 476  * _base_sas_log_info - verbose translation of firmware log info
 477  * @ioc: pointer to scsi command object
 478  * @log_info: log info
 479  *
 480  * Return nothing.
 481  */
 482 static void
 483 _base_sas_log_info(struct MPT2SAS_ADAPTER *ioc , u32 log_info)
 484 {
 485         union loginfo_type {
 486                 u32     loginfo;
 487                 struct {
 488                         u32     subcode:16;
 489                         u32     code:8;
 490                         u32     originator:4;
 491                         u32     bus_type:4;
 492                 } dw;
 493         };
 494         union loginfo_type sas_loginfo;
 495         char *originator_str = NULL;
 496
 497         sas_loginfo.loginfo = log_info;
 498         if (sas_loginfo.dw.bus_type != 3 /*SAS*/)
 499                 return;
 500
 501         /* each nexus loss loginfo */
 502         if (log_info == 0x31170000)
 503                 return;
 504
 505         /* eat the loginfos associated with task aborts */
 506         if (ioc->ignore_loginfos && (log_info == 30050000 || log_info ==
 507             0x31140000 || log_info == 0x31130000))
 508                 return;
 509
 510         switch (sas_loginfo.dw.originator) {
 511         case 0:
 512                 originator_str = "IOP";
 513                 break;
 514         case 1:
 515                 originator_str = "PL";
 516                 break;
 517         case 2:
 518                 originator_str = "IR";
 519                 break;
 520         }
 521
 522         printk(MPT2SAS_WARN_FMT "log_info(0x%08x): originator(%s), "
 523             "code(0x%02x), sub_code(0x%04x)\n", ioc->name, log_info,
 524              originator_str, sas_loginfo.dw.code,
 525              sas_loginfo.dw.subcode);
 526 }
 527
 528 /**
 529  * mpt2sas_base_fault_info - verbose translation of firmware FAULT code
 530  * @ioc: pointer to scsi command object
 531  * @fault_code: fault code
 532  *
 533  * Return nothing.
 534  */
 535 void
 536 mpt2sas_base_fault_info(struct MPT2SAS_ADAPTER *ioc , u16 fault_code)
 537 {
 538         printk(MPT2SAS_ERR_FMT "fault_state(0x%04x)!\n",
 539             ioc->name, fault_code);
 540 }
 541
 542 /**
 543  * _base_display_reply_info -
 544  * @ioc: pointer to scsi command object
 545  * @smid: system request message index
 546  * @msix_index: MSIX table index supplied by the OS
 547  * @reply: reply message frame(lower 32bit addr)
 548  *
 549  * Return nothing.
 550  */
 551 static void
 552 _base_display_reply_info(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 553     u32 reply)
 554 {
 555         MPI2DefaultReply_t *mpi_reply;
 556         u16 ioc_status;
 557
 558         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 559         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
 560 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 561         if ((ioc_status & MPI2_IOCSTATUS_MASK) &&
 562             (ioc->logging_level & MPT_DEBUG_REPLY)) {
 563                 _base_sas_ioc_info(ioc , mpi_reply,
 564                    mpt2sas_base_get_msg_frame(ioc, smid));
 565         }
 566 #endif
 567         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
 568                 _base_sas_log_info(ioc, le32_to_cpu(mpi_reply->IOCLogInfo));
 569 }
 570
 571 /**
 572  * mpt2sas_base_done - base internal command completion routine
 573  * @ioc: pointer to scsi command object
 574  * @smid: system request message index
 575  * @msix_index: MSIX table index supplied by the OS
 576  * @reply: reply message frame(lower 32bit addr)
 577  *
 578  * Return nothing.
 579  */
 580 void
 581 mpt2sas_base_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 582     u32 reply)
 583 {
 584         MPI2DefaultReply_t *mpi_reply;
 585
 586         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 587         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
 588                 return;
 589
 590         if (ioc->base_cmds.status == MPT2_CMD_NOT_USED)
 591                 return;
 592
 593         ioc->base_cmds.status |= MPT2_CMD_COMPLETE;
 594         if (mpi_reply) {
 595                 ioc->base_cmds.status |= MPT2_CMD_REPLY_VALID;
 596                 memcpy(ioc->base_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 597         }
 598         ioc->base_cmds.status &= ~MPT2_CMD_PENDING;
 599         complete(&ioc->base_cmds.done);
 600 }
 601
 602 /**
 603  * _base_async_event - main callback handler for firmware asyn events
 604  * @ioc: pointer to scsi command object
 605  * @msix_index: MSIX table index supplied by the OS
 606  * @reply: reply message frame(lower 32bit addr)
 607  *
 608  * Return nothing.
 609  */
 610 static void
 611 _base_async_event(struct MPT2SAS_ADAPTER *ioc, u8 msix_index, u32 reply)
 612 {
 613         Mpi2EventNotificationReply_t *mpi_reply;
 614         Mpi2EventAckRequest_t *ack_request;
 615         u16 smid;
 616
 617         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 618         if (!mpi_reply)
 619                 return;
 620         if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION)
 621                 return;
 622 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 623         _base_display_event_data(ioc, mpi_reply);
 624 #endif
 625         if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED))
 626                 goto out;
 627         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
 628         if (!smid) {
 629                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
 630                     ioc->name, __func__);
 631                 goto out;
 632         }
 633
 634         ack_request = mpt2sas_base_get_msg_frame(ioc, smid);
 635         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
 636         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
 637         ack_request->Event = mpi_reply->Event;
 638         ack_request->EventContext = mpi_reply->EventContext;
 639         ack_request->VF_ID = 0;  /* TODO */
 640         ack_request->VP_ID = 0;
 641         mpt2sas_base_put_smid_default(ioc, smid);
 642
 643  out:
 644
 645         /* scsih callback handler */
 646         mpt2sas_scsih_event_callback(ioc, msix_index, reply);
 647
 648         /* ctl callback handler */
 649         mpt2sas_ctl_event_callback(ioc, msix_index, reply);
 650 }
 651
 652 /**
 653  * _base_mask_interrupts - disable interrupts
 654  * @ioc: pointer to scsi command object
 655  *
 656  * Disabling ResetIRQ, Reply and Doorbell Interrupts
 657  *
 658  * Return nothing.
 659  */
 660 static void
 661 _base_mask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 662 {
 663         u32 him_register;
 664
 665         ioc->mask_interrupts = 1;
 666         him_register = readl(&ioc->chip->HostInterruptMask);
 667         him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK;
 668         writel(him_register, &ioc->chip->HostInterruptMask);
 669         readl(&ioc->chip->HostInterruptMask);
 670 }
 671
 672 /**
 673  * _base_unmask_interrupts - enable interrupts
 674  * @ioc: pointer to scsi command object
 675  *
 676  * Enabling only Reply Interrupts
 677  *
 678  * Return nothing.
 679  */
 680 static void
 681 _base_unmask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 682 {
 683         u32 him_register;
 684
 685         writel(0, &ioc->chip->HostInterruptStatus);
 686         him_register = readl(&ioc->chip->HostInterruptMask);
 687         him_register &= ~MPI2_HIM_RIM;
 688         writel(him_register, &ioc->chip->HostInterruptMask);
 689         ioc->mask_interrupts = 0;
 690 }
 691
 692 union reply_descriptor {
 693         u64 word;
 694         struct {
 695                 u32 low;
 696                 u32 high;
 697         } u;
 698 };
 699
 700 /**
 701  * _base_interrupt - MPT adapter (IOC) specific interrupt handler.
 702  * @irq: irq number (not used)
 703  * @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure
 704  * @r: pt_regs pointer (not used)
 705  *
 706  * Return IRQ_HANDLE if processed, else IRQ_NONE.
 707  */
 708 static irqreturn_t
 709 _base_interrupt(int irq, void *bus_id)
 710 {
 711         union reply_descriptor rd;
 712         u32 completed_cmds;
 713         u8 request_desript_type;
 714         u16 smid;
 715         u8 cb_idx;
 716         u32 reply;
 717         u8 msix_index;
 718         struct MPT2SAS_ADAPTER *ioc = bus_id;
 719         Mpi2ReplyDescriptorsUnion_t *rpf;
 720
 721         if (ioc->mask_interrupts)
 722                 return IRQ_NONE;
 723
 724         rpf = &ioc->reply_post_free[ioc->reply_post_host_index];
 725         request_desript_type = rpf->Default.ReplyFlags
 726              & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 727         if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
 728                 return IRQ_NONE;
 729
 730         completed_cmds = 0;
 731         do {
 732                 rd.word = rpf->Words;
 733                 if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX)
 734                         goto out;
 735                 reply = 0;
 736                 cb_idx = 0xFF;
 737                 smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1);
 738                 msix_index = rpf->Default.MSIxIndex;
 739                 if (request_desript_type ==
 740                     MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
 741                         reply = le32_to_cpu
 742                                 (rpf->AddressReply.ReplyFrameAddress);
 743                 } else if (request_desript_type ==
 744                     MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER)
 745                         goto next;
 746                 else if (request_desript_type ==
 747                     MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS)
 748                         goto next;
 749                 if (smid)
 750                         cb_idx = ioc->scsi_lookup[smid - 1].cb_idx;
 751                 if (smid && cb_idx != 0xFF) {
 752                         mpt_callbacks[cb_idx](ioc, smid, msix_index, reply);
 753                         if (reply)
 754                                 _base_display_reply_info(ioc, smid, msix_index,
 755                                     reply);
 756                         mpt2sas_base_free_smid(ioc, smid);
 757                 }
 758                 if (!smid)
 759                         _base_async_event(ioc, msix_index, reply);
 760
 761                 /* reply free queue handling */
 762                 if (reply) {
 763                         ioc->reply_free_host_index =
 764                             (ioc->reply_free_host_index ==
 765                             (ioc->reply_free_queue_depth - 1)) ?
 766                             0 : ioc->reply_free_host_index + 1;
 767                         ioc->reply_free[ioc->reply_free_host_index] =
 768                             cpu_to_le32(reply);
 769                         wmb();
 770                         writel(ioc->reply_free_host_index,
 771                             &ioc->chip->ReplyFreeHostIndex);
 772                 }
 773
 774  next:
 775
 776                 rpf->Words = ULLONG_MAX;
 777                 ioc->reply_post_host_index = (ioc->reply_post_host_index ==
 778                     (ioc->reply_post_queue_depth - 1)) ? 0 :
 779                     ioc->reply_post_host_index + 1;
 780                 request_desript_type =
 781                     ioc->reply_post_free[ioc->reply_post_host_index].Default.
 782                     ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 783                 completed_cmds++;
 784                 if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
 785                         goto out;
 786                 if (!ioc->reply_post_host_index)
 787                         rpf = ioc->reply_post_free;
 788                 else
 789                         rpf++;
 790         } while (1);
 791
 792  out:
 793
 794         if (!completed_cmds)
 795                 return IRQ_NONE;
 796
 797         wmb();
 798         writel(ioc->reply_post_host_index, &ioc->chip->ReplyPostHostIndex);
 799         return IRQ_HANDLED;
 800 }
 801
 802 /**
 803  * mpt2sas_base_release_callback_handler - clear interupt callback handler
 804  * @cb_idx: callback index
 805  *
 806  * Return nothing.
 807  */
 808 void
 809 mpt2sas_base_release_callback_handler(u8 cb_idx)
 810 {
 811         mpt_callbacks[cb_idx] = NULL;
 812 }
 813
 814 /**
 815  * mpt2sas_base_register_callback_handler - obtain index for the interrupt callback handler
 816  * @cb_func: callback function
 817  *
 818  * Returns cb_func.
 819  */
 820 u8
 821 mpt2sas_base_register_callback_handler(MPT_CALLBACK cb_func)
 822 {
 823         u8 cb_idx;
 824
 825         for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--)
 826                 if (mpt_callbacks[cb_idx] == NULL)
 827                         break;
 828
 829         mpt_callbacks[cb_idx] = cb_func;
 830         return cb_idx;
 831 }
 832
 833 /**
 834  * mpt2sas_base_initialize_callback_handler - initialize the interrupt callback handler
 835  *
 836  * Return nothing.
 837  */
 838 void
 839 mpt2sas_base_initialize_callback_handler(void)
 840 {
 841         u8 cb_idx;
 842
 843         for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++)
 844                 mpt2sas_base_release_callback_handler(cb_idx);
 845 }
 846
 847 /**
 848  * mpt2sas_base_build_zero_len_sge - build zero length sg entry
 849  * @ioc: per adapter object
 850  * @paddr: virtual address for SGE
 851  *
 852  * Create a zero length scatter gather entry to insure the IOCs hardware has
 853  * something to use if the target device goes brain dead and tries
 854  * to send data even when none is asked for.
 855  *
 856  * Return nothing.
 857  */
 858 void
 859 mpt2sas_base_build_zero_len_sge(struct MPT2SAS_ADAPTER *ioc, void *paddr)
 860 {
 861         u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT |
 862             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST |
 863             MPI2_SGE_FLAGS_SIMPLE_ELEMENT) <<
 864             MPI2_SGE_FLAGS_SHIFT);
 865         ioc->base_add_sg_single(paddr, flags_length, -1);
 866 }
 867
 868 /**
 869  * _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr.
 870  * @paddr: virtual address for SGE
 871  * @flags_length: SGE flags and data transfer length
 872  * @dma_addr: Physical address
 873  *
 874  * Return nothing.
 875  */
 876 static void
 877 _base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr)
 878 {
 879         Mpi2SGESimple32_t *sgel = paddr;
 880
 881         flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING |
 882             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
 883         sgel->FlagsLength = cpu_to_le32(flags_length);
 884         sgel->Address = cpu_to_le32(dma_addr);
 885 }
 886
 887
 888 /**
 889  * _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr.
 890  * @paddr: virtual address for SGE
 891  * @flags_length: SGE flags and data transfer length
 892  * @dma_addr: Physical address
 893  *
 894  * Return nothing.
 895  */
 896 static void
 897 _base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr)
 898 {
 899         Mpi2SGESimple64_t *sgel = paddr;
 900
 901         flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
 902             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
 903         sgel->FlagsLength = cpu_to_le32(flags_length);
 904         sgel->Address = cpu_to_le64(dma_addr);
 905 }
 906
 907 #define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10))
 908
 909 /**
 910  * _base_config_dma_addressing - set dma addressing
 911  * @ioc: per adapter object
 912  * @pdev: PCI device struct
 913  *
 914  * Returns 0 for success, non-zero for failure.
 915  */
 916 static int
 917 _base_config_dma_addressing(struct MPT2SAS_ADAPTER *ioc, struct pci_dev *pdev)
 918 {
 919         struct sysinfo s;
 920         char *desc = NULL;
 921
 922         if (sizeof(dma_addr_t) > 4) {
 923                 const uint64_t required_mask =
 924                     dma_get_required_mask(&pdev->dev);
 925                 if ((required_mask > DMA_BIT_MASK(32)) && !pci_set_dma_mask(pdev,
 926                     DMA_BIT_MASK(64)) && !pci_set_consistent_dma_mask(pdev,
 927                     DMA_BIT_MASK(64))) {
 928                         ioc->base_add_sg_single = &_base_add_sg_single_64;
 929                         ioc->sge_size = sizeof(Mpi2SGESimple64_t);
 930                         desc = "64";
 931                         goto out;
 932                 }
 933         }
 934
 935         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
 936             && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
 937                 ioc->base_add_sg_single = &_base_add_sg_single_32;
 938                 ioc->sge_size = sizeof(Mpi2SGESimple32_t);
 939                 desc = "32";
 940         } else
 941                 return -ENODEV;
 942
 943  out:
 944         si_meminfo(&s);
 945         printk(MPT2SAS_INFO_FMT "%s BIT PCI BUS DMA ADDRESSING SUPPORTED, "
 946             "total mem (%ld kB)\n", ioc->name, desc, convert_to_kb(s.totalram));
 947
 948         return 0;
 949 }
 950
 951 /**
 952  * _base_save_msix_table - backup msix vector table
 953  * @ioc: per adapter object
 954  *
 955  * This address an errata where diag reset clears out the table
 956  */
 957 static void
 958 _base_save_msix_table(struct MPT2SAS_ADAPTER *ioc)
 959 {
 960         int i;
 961
 962         if (!ioc->msix_enable || ioc->msix_table_backup == NULL)
 963                 return;
 964
 965         for (i = 0; i < ioc->msix_vector_count; i++)
 966                 ioc->msix_table_backup[i] = ioc->msix_table[i];
 967 }
 968
 969 /**
 970  * _base_restore_msix_table - this restores the msix vector table
 971  * @ioc: per adapter object
 972  *
 973  */
 974 static void
 975 _base_restore_msix_table(struct MPT2SAS_ADAPTER *ioc)
 976 {
 977         int i;
 978
 979         if (!ioc->msix_enable || ioc->msix_table_backup == NULL)
 980                 return;
 981
 982         for (i = 0; i < ioc->msix_vector_count; i++)
 983                 ioc->msix_table[i] = ioc->msix_table_backup[i];
 984 }
 985
 986 /**
 987  * _base_check_enable_msix - checks MSIX capabable.
 988  * @ioc: per adapter object
 989  *
 990  * Check to see if card is capable of MSIX, and set number
 991  * of avaliable msix vectors
 992  */
 993 static int
 994 _base_check_enable_msix(struct MPT2SAS_ADAPTER *ioc)
 995 {
 996         int base;
 997         u16 message_control;
 998         u32 msix_table_offset;
 999
1000         base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
1001         if (!base) {
1002                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "msix not "
1003                     "supported\n", ioc->name));
1004                 return -EINVAL;
1005         }
1006
1007         /* get msix vector count */
1008         pci_read_config_word(ioc->pdev, base + 2, &message_control);
1009         ioc->msix_vector_count = (message_control & 0x3FF) + 1;
1010
1011         /* get msix table  */
1012         pci_read_config_dword(ioc->pdev, base + 4, &msix_table_offset);
1013         msix_table_offset &= 0xFFFFFFF8;
1014         ioc->msix_table = (u32 *)((void *)ioc->chip + msix_table_offset);
1015
1016         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "msix is supported, "
1017             "vector_count(%d), table_offset(0x%08x), table(%p)\n", ioc->name,
1018             ioc->msix_vector_count, msix_table_offset, ioc->msix_table));
1019         return 0;
1020 }
1021
1022 /**
1023  * _base_disable_msix - disables msix
1024  * @ioc: per adapter object
1025  *
1026  */
1027 static void
1028 _base_disable_msix(struct MPT2SAS_ADAPTER *ioc)
1029 {
1030         if (ioc->msix_enable) {
1031                 pci_disable_msix(ioc->pdev);
1032                 kfree(ioc->msix_table_backup);
1033                 ioc->msix_table_backup = NULL;
1034                 ioc->msix_enable = 0;
1035         }
1036 }
1037
1038 /**
1039  * _base_enable_msix - enables msix, failback to io_apic
1040  * @ioc: per adapter object
1041  *
1042  */
1043 static int
1044 _base_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1045 {
1046         struct msix_entry entries;
1047         int r;
1048         u8 try_msix = 0;
1049
1050         if (msix_disable == -1 || msix_disable == 0)
1051                 try_msix = 1;
1052
1053         if (!try_msix)
1054                 goto try_ioapic;
1055
1056         if (_base_check_enable_msix(ioc) != 0)
1057                 goto try_ioapic;
1058
1059         ioc->msix_table_backup = kcalloc(ioc->msix_vector_count,
1060             sizeof(u32), GFP_KERNEL);
1061         if (!ioc->msix_table_backup) {
1062                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation for "
1063                     "msix_table_backup failed!!!\n", ioc->name));
1064                 goto try_ioapic;
1065         }
1066
1067         memset(&entries, 0, sizeof(struct msix_entry));
1068         r = pci_enable_msix(ioc->pdev, &entries, 1);
1069         if (r) {
1070                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "pci_enable_msix "
1071                     "failed (r=%d) !!!\n", ioc->name, r));
1072                 goto try_ioapic;
1073         }
1074
1075         r = request_irq(entries.vector, _base_interrupt, IRQF_SHARED,
1076             ioc->name, ioc);
1077         if (r) {
1078                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "unable to allocate "
1079                     "interrupt %d !!!\n", ioc->name, entries.vector));
1080                 pci_disable_msix(ioc->pdev);
1081                 goto try_ioapic;
1082         }
1083
1084         ioc->pci_irq = entries.vector;
1085         ioc->msix_enable = 1;
1086         return 0;
1087
1088 /* failback to io_apic interrupt routing */
1089  try_ioapic:
1090
1091         r = request_irq(ioc->pdev->irq, _base_interrupt, IRQF_SHARED,
1092             ioc->name, ioc);
1093         if (r) {
1094                 printk(MPT2SAS_ERR_FMT "unable to allocate interrupt %d!\n",
1095                     ioc->name, ioc->pdev->irq);
1096                 r = -EBUSY;
1097                 goto out_fail;
1098         }
1099
1100         ioc->pci_irq = ioc->pdev->irq;
1101         return 0;
1102
1103  out_fail:
1104         return r;
1105 }
1106
1107 /**
1108  * mpt2sas_base_map_resources - map in controller resources (io/irq/memap)
1109  * @ioc: per adapter object
1110  *
1111  * Returns 0 for success, non-zero for failure.
1112  */
1113 int
1114 mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
1115 {
1116         struct pci_dev *pdev = ioc->pdev;
1117         u32 memap_sz;
1118         u32 pio_sz;
1119         int i, r = 0;
1120
1121         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n",
1122             ioc->name, __func__));
1123
1124         ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM);
1125         if (pci_enable_device_mem(pdev)) {
1126                 printk(MPT2SAS_WARN_FMT "pci_enable_device_mem: "
1127                     "failed\n", ioc->name);
1128                 return -ENODEV;
1129         }
1130
1131
1132         if (pci_request_selected_regions(pdev, ioc->bars,
1133             MPT2SAS_DRIVER_NAME)) {
1134                 printk(MPT2SAS_WARN_FMT "pci_request_selected_regions: "
1135                     "failed\n", ioc->name);
1136                 r = -ENODEV;
1137                 goto out_fail;
1138         }
1139
1140         pci_set_master(pdev);
1141
1142         if (_base_config_dma_addressing(ioc, pdev) != 0) {
1143                 printk(MPT2SAS_WARN_FMT "no suitable DMA mask for %s\n",
1144                     ioc->name, pci_name(pdev));
1145                 r = -ENODEV;
1146                 goto out_fail;
1147         }
1148
1149         for (i = 0, memap_sz = 0, pio_sz = 0 ; i < DEVICE_COUNT_RESOURCE; i++) {
1150                 if (pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE_IO) {
1151                         if (pio_sz)
1152                                 continue;
1153                         ioc->pio_chip = pci_resource_start(pdev, i);
1154                         pio_sz = pci_resource_len(pdev, i);
1155                 } else {
1156                         if (memap_sz)
1157                                 continue;
1158                         ioc->chip_phys = pci_resource_start(pdev, i);
1159                         memap_sz = pci_resource_len(pdev, i);
1160                         ioc->chip = ioremap(ioc->chip_phys, memap_sz);
1161                         if (ioc->chip == NULL) {
1162                                 printk(MPT2SAS_ERR_FMT "unable to map adapter "
1163                                     "memory!\n", ioc->name);
1164                                 r = -EINVAL;
1165                                 goto out_fail;
1166                         }
1167                 }
1168         }
1169
1170         _base_mask_interrupts(ioc);
1171         r = _base_enable_msix(ioc);
1172         if (r)
1173                 goto out_fail;
1174
1175         printk(MPT2SAS_INFO_FMT "%s: IRQ %d\n",
1176             ioc->name,  ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
1177             "IO-APIC enabled"), ioc->pci_irq);
1178         printk(MPT2SAS_INFO_FMT "iomem(0x%lx), mapped(0x%p), size(%d)\n",
1179             ioc->name, ioc->chip_phys, ioc->chip, memap_sz);
1180         printk(MPT2SAS_INFO_FMT "ioport(0x%lx), size(%d)\n",
1181             ioc->name, ioc->pio_chip, pio_sz);
1182
1183         return 0;
1184
1185  out_fail:
1186         if (ioc->chip_phys)
1187                 iounmap(ioc->chip);
1188         ioc->chip_phys = 0;
1189         ioc->pci_irq = -1;
1190         pci_release_selected_regions(ioc->pdev, ioc->bars);
1191         pci_disable_device(pdev);
1192         return r;
1193 }
1194
1195 /**
1196  * mpt2sas_base_get_msg_frame_dma - obtain request mf pointer phys addr
1197  * @ioc: per adapter object
1198  * @smid: system request message index(smid zero is invalid)
1199  *
1200  * Returns phys pointer to message frame.
1201  */
1202 dma_addr_t
1203 mpt2sas_base_get_msg_frame_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1204 {
1205         return ioc->request_dma + (smid * ioc->request_sz);
1206 }
1207
1208 /**
1209  * mpt2sas_base_get_msg_frame - obtain request mf pointer
1210  * @ioc: per adapter object
1211  * @smid: system request message index(smid zero is invalid)
1212  *
1213  * Returns virt pointer to message frame.
1214  */
1215 void *
1216 mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1217 {
1218         return (void *)(ioc->request + (smid * ioc->request_sz));
1219 }
1220
1221 /**
1222  * mpt2sas_base_get_sense_buffer - obtain a sense buffer assigned to a mf request
1223  * @ioc: per adapter object
1224  * @smid: system request message index
1225  *
1226  * Returns virt pointer to sense buffer.
1227  */
1228 void *
1229 mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1230 {
1231         return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1232 }
1233
1234 /**
1235  * mpt2sas_base_get_sense_buffer_dma - obtain a sense buffer assigned to a mf request
1236  * @ioc: per adapter object
1237  * @smid: system request message index
1238  *
1239  * Returns phys pointer to sense buffer.
1240  */
1241 dma_addr_t
1242 mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1243 {
1244         return ioc->sense_dma + ((smid - 1) * SCSI_SENSE_BUFFERSIZE);
1245 }
1246
1247 /**
1248  * mpt2sas_base_get_reply_virt_addr - obtain reply frames virt address
1249  * @ioc: per adapter object
1250  * @phys_addr: lower 32 physical addr of the reply
1251  *
1252  * Converts 32bit lower physical addr into a virt address.
1253  */
1254 void *
1255 mpt2sas_base_get_reply_virt_addr(struct MPT2SAS_ADAPTER *ioc, u32 phys_addr)
1256 {
1257         if (!phys_addr)
1258                 return NULL;
1259         return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
1260 }
1261
1262 /**
1263  * mpt2sas_base_get_smid - obtain a free smid
1264  * @ioc: per adapter object
1265  * @cb_idx: callback index
1266  *
1267  * Returns smid (zero is invalid)
1268  */
1269 u16
1270 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1271 {
1272         unsigned long flags;
1273         struct request_tracker *request;
1274         u16 smid;
1275
1276         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1277         if (list_empty(&ioc->free_list)) {
1278                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1279                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1280                     ioc->name, __func__);
1281                 return 0;
1282         }
1283
1284         request = list_entry(ioc->free_list.next,
1285             struct request_tracker, tracker_list);
1286         request->cb_idx = cb_idx;
1287         smid = request->smid;
1288         list_del(&request->tracker_list);
1289         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1290         return smid;
1291 }
1292
1293
1294 /**
1295  * mpt2sas_base_free_smid - put smid back on free_list
1296  * @ioc: per adapter object
1297  * @smid: system request message index
1298  *
1299  * Return nothing.
1300  */
1301 void
1302 mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1303 {
1304         unsigned long flags;
1305
1306         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1307         ioc->scsi_lookup[smid - 1].cb_idx = 0xFF;
1308         list_add_tail(&ioc->scsi_lookup[smid - 1].tracker_list,
1309             &ioc->free_list);
1310         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1311
1312         /*
1313          * See _wait_for_commands_to_complete() call with regards to this code.
1314          */
1315         if (ioc->shost_recovery && ioc->pending_io_count) {
1316                 if (ioc->pending_io_count == 1)
1317                         wake_up(&ioc->reset_wq);
1318                 ioc->pending_io_count--;
1319         }
1320 }
1321
1322 /**
1323  * _base_writeq - 64 bit write to MMIO
1324  * @ioc: per adapter object
1325  * @b: data payload
1326  * @addr: address in MMIO space
1327  * @writeq_lock: spin lock
1328  *
1329  * Glue for handling an atomic 64 bit word to MMIO. This special handling takes
1330  * care of 32 bit environment where its not quarenteed to send the entire word
1331  * in one transfer.
1332  */
1333 #ifndef writeq
1334 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1335     spinlock_t *writeq_lock)
1336 {
1337         unsigned long flags;
1338         __u64 data_out = cpu_to_le64(b);
1339
1340         spin_lock_irqsave(writeq_lock, flags);
1341         writel((u32)(data_out), addr);
1342         writel((u32)(data_out >> 32), (addr + 4));
1343         spin_unlock_irqrestore(writeq_lock, flags);
1344 }
1345 #else
1346 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1347     spinlock_t *writeq_lock)
1348 {
1349         writeq(cpu_to_le64(b), addr);
1350 }
1351 #endif
1352
1353 /**
1354  * mpt2sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
1355  * @ioc: per adapter object
1356  * @smid: system request message index
1357  * @handle: device handle
1358  *
1359  * Return nothing.
1360  */
1361 void
1362 mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid, u16 handle)
1363 {
1364         Mpi2RequestDescriptorUnion_t descriptor;
1365         u64 *request = (u64 *)&descriptor;
1366
1367
1368         descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
1369         descriptor.SCSIIO.MSIxIndex = 0; /* TODO */
1370         descriptor.SCSIIO.SMID = cpu_to_le16(smid);
1371         descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
1372         descriptor.SCSIIO.LMID = 0;
1373         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1374             &ioc->scsi_lookup_lock);
1375 }
1376
1377
1378 /**
1379  * mpt2sas_base_put_smid_hi_priority - send Task Managment request to firmware
1380  * @ioc: per adapter object
1381  * @smid: system request message index
1382  *
1383  * Return nothing.
1384  */
1385 void
1386 mpt2sas_base_put_smid_hi_priority(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1387 {
1388         Mpi2RequestDescriptorUnion_t descriptor;
1389         u64 *request = (u64 *)&descriptor;
1390
1391         descriptor.HighPriority.RequestFlags =
1392             MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
1393         descriptor.HighPriority.MSIxIndex = 0; /* TODO */
1394         descriptor.HighPriority.SMID = cpu_to_le16(smid);
1395         descriptor.HighPriority.LMID = 0;
1396         descriptor.HighPriority.Reserved1 = 0;
1397         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1398             &ioc->scsi_lookup_lock);
1399 }
1400
1401 /**
1402  * mpt2sas_base_put_smid_default - Default, primarily used for config pages
1403  * @ioc: per adapter object
1404  * @smid: system request message index
1405  *
1406  * Return nothing.
1407  */
1408 void
1409 mpt2sas_base_put_smid_default(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1410 {
1411         Mpi2RequestDescriptorUnion_t descriptor;
1412         u64 *request = (u64 *)&descriptor;
1413
1414         descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1415         descriptor.Default.MSIxIndex = 0; /* TODO */
1416         descriptor.Default.SMID = cpu_to_le16(smid);
1417         descriptor.Default.LMID = 0;
1418         descriptor.Default.DescriptorTypeDependent = 0;
1419         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1420             &ioc->scsi_lookup_lock);
1421 }
1422
1423 /**
1424  * mpt2sas_base_put_smid_target_assist - send Target Assist/Status to firmware
1425  * @ioc: per adapter object
1426  * @smid: system request message index
1427  * @io_index: value used to track the IO
1428  *
1429  * Return nothing.
1430  */
1431 void
1432 mpt2sas_base_put_smid_target_assist(struct MPT2SAS_ADAPTER *ioc, u16 smid,
1433     u16 io_index)
1434 {
1435         Mpi2RequestDescriptorUnion_t descriptor;
1436         u64 *request = (u64 *)&descriptor;
1437
1438         descriptor.SCSITarget.RequestFlags =
1439             MPI2_REQ_DESCRIPT_FLAGS_SCSI_TARGET;
1440         descriptor.SCSITarget.MSIxIndex = 0; /* TODO */
1441         descriptor.SCSITarget.SMID = cpu_to_le16(smid);
1442         descriptor.SCSITarget.LMID = 0;
1443         descriptor.SCSITarget.IoIndex = cpu_to_le16(io_index);
1444         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1445             &ioc->scsi_lookup_lock);
1446 }
1447
1448 /**
1449  * _base_display_dell_branding - Disply branding string
1450  * @ioc: per adapter object
1451  *
1452  * Return nothing.
1453  */
1454 static void
1455 _base_display_dell_branding(struct MPT2SAS_ADAPTER *ioc)
1456 {
1457         char dell_branding[MPT2SAS_DELL_BRANDING_SIZE];
1458
1459         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_DELL)
1460                 return;
1461
1462         memset(dell_branding, 0, MPT2SAS_DELL_BRANDING_SIZE);
1463         switch (ioc->pdev->subsystem_device) {
1464         case MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID:
1465                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING,
1466                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1467                 break;
1468         case MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID:
1469                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING,
1470                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1471                 break;
1472         case MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID:
1473                 strncpy(dell_branding,
1474                     MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING,
1475                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1476                 break;
1477         case MPT2SAS_DELL_PERC_H200_MODULAR_SSDID:
1478                 strncpy(dell_branding,
1479                     MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING,
1480                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1481                 break;
1482         case MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID:
1483                 strncpy(dell_branding,
1484                     MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING,
1485                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1486                 break;
1487         case MPT2SAS_DELL_PERC_H200_SSDID:
1488                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_BRANDING,
1489                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1490                 break;
1491         case MPT2SAS_DELL_6GBPS_SAS_SSDID:
1492                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_BRANDING,
1493                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1494                 break;
1495         default:
1496                 sprintf(dell_branding, "0x%4X", ioc->pdev->subsystem_device);
1497                 break;
1498         }
1499
1500         printk(MPT2SAS_INFO_FMT "%s: Vendor(0x%04X), Device(0x%04X),"
1501             " SSVID(0x%04X), SSDID(0x%04X)\n", ioc->name, dell_branding,
1502             ioc->pdev->vendor, ioc->pdev->device, ioc->pdev->subsystem_vendor,
1503             ioc->pdev->subsystem_device);
1504 }
1505
1506 /**
1507  * _base_display_ioc_capabilities - Disply IOC's capabilities.
1508  * @ioc: per adapter object
1509  *
1510  * Return nothing.
1511  */
1512 static void
1513 _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc)
1514 {
1515         int i = 0;
1516         char desc[16];
1517         u8 revision;
1518         u32 iounit_pg1_flags;
1519
1520         pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
1521         strncpy(desc, ioc->manu_pg0.ChipName, 16);
1522         printk(MPT2SAS_INFO_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "
1523            "ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
1524             ioc->name, desc,
1525            (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
1526            (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
1527            (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
1528            ioc->facts.FWVersion.Word & 0x000000FF,
1529            revision,
1530            (ioc->bios_pg3.BiosVersion & 0xFF000000) >> 24,
1531            (ioc->bios_pg3.BiosVersion & 0x00FF0000) >> 16,
1532            (ioc->bios_pg3.BiosVersion & 0x0000FF00) >> 8,
1533             ioc->bios_pg3.BiosVersion & 0x000000FF);
1534
1535         _base_display_dell_branding(ioc);
1536
1537         printk(MPT2SAS_INFO_FMT "Protocol=(", ioc->name);
1538
1539         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
1540                 printk("Initiator");
1541                 i++;
1542         }
1543
1544         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
1545                 printk("%sTarget", i ? "," : "");
1546                 i++;
1547         }
1548
1549         i = 0;
1550         printk("), ");
1551         printk("Capabilities=(");
1552
1553         if (ioc->facts.IOCCapabilities &
1554             MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
1555                 printk("Raid");
1556                 i++;
1557         }
1558
1559         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
1560                 printk("%sTLR", i ? "," : "");
1561                 i++;
1562         }
1563
1564         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
1565                 printk("%sMulticast", i ? "," : "");
1566                 i++;
1567         }
1568
1569         if (ioc->facts.IOCCapabilities &
1570             MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
1571                 printk("%sBIDI Target", i ? "," : "");
1572                 i++;
1573         }
1574
1575         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
1576                 printk("%sEEDP", i ? "," : "");
1577                 i++;
1578         }
1579
1580         if (ioc->facts.IOCCapabilities &
1581             MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
1582                 printk("%sSnapshot Buffer", i ? "," : "");
1583                 i++;
1584         }
1585
1586         if (ioc->facts.IOCCapabilities &
1587             MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
1588                 printk("%sDiag Trace Buffer", i ? "," : "");
1589                 i++;
1590         }
1591
1592         if (ioc->facts.IOCCapabilities &
1593             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
1594                 printk("%sTask Set Full", i ? "," : "");
1595                 i++;
1596         }
1597
1598         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
1599         if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
1600                 printk("%sNCQ", i ? "," : "");
1601                 i++;
1602         }
1603
1604         printk(")\n");
1605 }
1606
1607 /**
1608  * _base_static_config_pages - static start of day config pages
1609  * @ioc: per adapter object
1610  *
1611  * Return nothing.
1612  */
1613 static void
1614 _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc)
1615 {
1616         Mpi2ConfigReply_t mpi_reply;
1617         u32 iounit_pg1_flags;
1618
1619         mpt2sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
1620         if (ioc->ir_firmware)
1621                 mpt2sas_config_get_manufacturing_pg10(ioc, &mpi_reply,
1622                     &ioc->manu_pg10);
1623         mpt2sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
1624         mpt2sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
1625         mpt2sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
1626         mpt2sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
1627         mpt2sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
1628         _base_display_ioc_capabilities(ioc);
1629
1630         /*
1631          * Enable task_set_full handling in iounit_pg1 when the
1632          * facts capabilities indicate that its supported.
1633          */
1634         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
1635         if ((ioc->facts.IOCCapabilities &
1636             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
1637                 iounit_pg1_flags &=
1638                     ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
1639         else
1640                 iounit_pg1_flags |=
1641                     MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
1642         ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
1643         mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
1644 }
1645
1646 /**
1647  * _base_release_memory_pools - release memory
1648  * @ioc: per adapter object
1649  *
1650  * Free memory allocated from _base_allocate_memory_pools.
1651  *
1652  * Return nothing.
1653  */
1654 static void
1655 _base_release_memory_pools(struct MPT2SAS_ADAPTER *ioc)
1656 {
1657         dexitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1658             __func__));
1659
1660         if (ioc->request) {
1661                 pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
1662                     ioc->request,  ioc->request_dma);
1663                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "request_pool(0x%p)"
1664                     ": free\n", ioc->name, ioc->request));
1665                 ioc->request = NULL;
1666         }
1667
1668         if (ioc->sense) {
1669                 pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
1670                 if (ioc->sense_dma_pool)
1671                         pci_pool_destroy(ioc->sense_dma_pool);
1672                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_pool(0x%p)"
1673                     ": free\n", ioc->name, ioc->sense));
1674                 ioc->sense = NULL;
1675         }
1676
1677         if (ioc->reply) {
1678                 pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
1679                 if (ioc->reply_dma_pool)
1680                         pci_pool_destroy(ioc->reply_dma_pool);
1681                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_pool(0x%p)"
1682                      ": free\n", ioc->name, ioc->reply));
1683                 ioc->reply = NULL;
1684         }
1685
1686         if (ioc->reply_free) {
1687                 pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
1688                     ioc->reply_free_dma);
1689                 if (ioc->reply_free_dma_pool)
1690                         pci_pool_destroy(ioc->reply_free_dma_pool);
1691                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_pool"
1692                     "(0x%p): free\n", ioc->name, ioc->reply_free));
1693                 ioc->reply_free = NULL;
1694         }
1695
1696         if (ioc->reply_post_free) {
1697                 pci_pool_free(ioc->reply_post_free_dma_pool,
1698                     ioc->reply_post_free, ioc->reply_post_free_dma);
1699                 if (ioc->reply_post_free_dma_pool)
1700                         pci_pool_destroy(ioc->reply_post_free_dma_pool);
1701                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
1702                     "reply_post_free_pool(0x%p): free\n", ioc->name,
1703                     ioc->reply_post_free));
1704                 ioc->reply_post_free = NULL;
1705         }
1706
1707         if (ioc->config_page) {
1708                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
1709                     "config_page(0x%p): free\n", ioc->name,
1710                     ioc->config_page));
1711                 pci_free_consistent(ioc->pdev, ioc->config_page_sz,
1712                     ioc->config_page, ioc->config_page_dma);
1713         }
1714
1715         kfree(ioc->scsi_lookup);
1716 }
1717
1718
1719 /**
1720  * _base_allocate_memory_pools - allocate start of day memory pools
1721  * @ioc: per adapter object
1722  * @sleep_flag: CAN_SLEEP or NO_SLEEP
1723  *
1724  * Returns 0 success, anything else error
1725  */
1726 static int
1727 _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc,  int sleep_flag)
1728 {
1729         Mpi2IOCFactsReply_t *facts;
1730         u32 queue_size, queue_diff;
1731         u16 max_sge_elements;
1732         u16 num_of_reply_frames;
1733         u16 chains_needed_per_io;
1734         u32 sz, total_sz;
1735         u16 i;
1736         u32 retry_sz;
1737         u16 max_request_credit;
1738
1739         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1740             __func__));
1741
1742         retry_sz = 0;
1743         facts = &ioc->facts;
1744
1745         /* command line tunables  for max sgl entries */
1746         if (max_sgl_entries != -1) {
1747                 ioc->shost->sg_tablesize = (max_sgl_entries <
1748                     MPT2SAS_SG_DEPTH) ? max_sgl_entries :
1749                     MPT2SAS_SG_DEPTH;
1750         } else {
1751                 ioc->shost->sg_tablesize = MPT2SAS_SG_DEPTH;
1752         }
1753
1754         /* command line tunables  for max controller queue depth */
1755         if (max_queue_depth != -1) {
1756                 max_request_credit = (max_queue_depth < facts->RequestCredit)
1757                     ? max_queue_depth : facts->RequestCredit;
1758         } else {
1759                 max_request_credit = (facts->RequestCredit >
1760                     MPT2SAS_MAX_REQUEST_QUEUE) ? MPT2SAS_MAX_REQUEST_QUEUE :
1761                     facts->RequestCredit;
1762         }
1763         ioc->request_depth = max_request_credit;
1764
1765         /* request frame size */
1766         ioc->request_sz = facts->IOCRequestFrameSize * 4;
1767
1768         /* reply frame size */
1769         ioc->reply_sz = facts->ReplyFrameSize * 4;
1770
1771  retry_allocation:
1772         total_sz = 0;
1773         /* calculate number of sg elements left over in the 1st frame */
1774         max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
1775             sizeof(Mpi2SGEIOUnion_t)) + ioc->sge_size);
1776         ioc->max_sges_in_main_message = max_sge_elements/ioc->sge_size;
1777
1778         /* now do the same for a chain buffer */
1779         max_sge_elements = ioc->request_sz - ioc->sge_size;
1780         ioc->max_sges_in_chain_message = max_sge_elements/ioc->sge_size;
1781
1782         ioc->chain_offset_value_for_main_message =
1783             ((sizeof(Mpi2SCSIIORequest_t) - sizeof(Mpi2SGEIOUnion_t)) +
1784              (ioc->max_sges_in_chain_message * ioc->sge_size)) / 4;
1785
1786         /*
1787          *  MPT2SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
1788          */
1789         chains_needed_per_io = ((ioc->shost->sg_tablesize -
1790            ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
1791             + 1;
1792         if (chains_needed_per_io > facts->MaxChainDepth) {
1793                 chains_needed_per_io = facts->MaxChainDepth;
1794                 ioc->shost->sg_tablesize = min_t(u16,
1795                 ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
1796                 * chains_needed_per_io), ioc->shost->sg_tablesize);
1797         }
1798         ioc->chains_needed_per_io = chains_needed_per_io;
1799
1800         /* reply free queue sizing - taking into account for events */
1801         num_of_reply_frames = ioc->request_depth + 32;
1802
1803         /* number of replies frames can't be a multiple of 16 */
1804         /* decrease number of reply frames by 1 */
1805         if (!(num_of_reply_frames % 16))
1806                 num_of_reply_frames--;
1807
1808         /* calculate number of reply free queue entries
1809          *  (must be multiple of 16)
1810          */
1811
1812         /* (we know reply_free_queue_depth is not a multiple of 16) */
1813         queue_size = num_of_reply_frames;
1814         queue_size += 16 - (queue_size % 16);
1815         ioc->reply_free_queue_depth = queue_size;
1816
1817         /* reply descriptor post queue sizing */
1818         /* this size should be the number of request frames + number of reply
1819          * frames
1820          */
1821
1822         queue_size = ioc->request_depth + num_of_reply_frames + 1;
1823         /* round up to 16 byte boundary */
1824         if (queue_size % 16)
1825                 queue_size += 16 - (queue_size % 16);
1826
1827         /* check against IOC maximum reply post queue depth */
1828         if (queue_size > facts->MaxReplyDescriptorPostQueueDepth) {
1829                 queue_diff = queue_size -
1830                     facts->MaxReplyDescriptorPostQueueDepth;
1831
1832                 /* round queue_diff up to multiple of 16 */
1833                 if (queue_diff % 16)
1834                         queue_diff += 16 - (queue_diff % 16);
1835
1836                 /* adjust request_depth, reply_free_queue_depth,
1837                  * and queue_size
1838                  */
1839                 ioc->request_depth -= queue_diff;
1840                 ioc->reply_free_queue_depth -= queue_diff;
1841                 queue_size -= queue_diff;
1842         }
1843         ioc->reply_post_queue_depth = queue_size;
1844
1845         /* max scsi host queue depth */
1846         ioc->shost->can_queue = ioc->request_depth - INTERNAL_CMDS_COUNT;
1847         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host queue: depth"
1848             "(%d)\n", ioc->name, ioc->shost->can_queue));
1849
1850         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "
1851             "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
1852             "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
1853             ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
1854             ioc->chains_needed_per_io));
1855
1856         /* contiguous pool for request and chains, 16 byte align, one extra "
1857          * "frame for smid=0
1858          */
1859         ioc->chain_depth = ioc->chains_needed_per_io * ioc->request_depth;
1860         sz = ((ioc->request_depth + 1 + ioc->chain_depth) * ioc->request_sz);
1861
1862         ioc->request_dma_sz = sz;
1863         ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
1864         if (!ioc->request) {
1865                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
1866                     "failed: req_depth(%d), chains_per_io(%d), frame_sz(%d), "
1867                     "total(%d kB)\n", ioc->name, ioc->request_depth,
1868                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
1869                 if (ioc->request_depth < MPT2SAS_SAS_QUEUE_DEPTH)
1870                         goto out;
1871                 retry_sz += 64;
1872                 ioc->request_depth = max_request_credit - retry_sz;
1873                 goto retry_allocation;
1874         }
1875
1876         if (retry_sz)
1877                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
1878                     "succeed: req_depth(%d), chains_per_io(%d), frame_sz(%d), "
1879                     "total(%d kb)\n", ioc->name, ioc->request_depth,
1880                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
1881
1882         ioc->chain = ioc->request + ((ioc->request_depth + 1) *
1883             ioc->request_sz);
1884         ioc->chain_dma = ioc->request_dma + ((ioc->request_depth + 1) *
1885             ioc->request_sz);
1886         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool(0x%p): "
1887             "depth(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
1888             ioc->request, ioc->request_depth, ioc->request_sz,
1889             ((ioc->request_depth + 1) * ioc->request_sz)/1024));
1890         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "chain pool(0x%p): depth"
1891             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->chain,
1892             ioc->chain_depth, ioc->request_sz, ((ioc->chain_depth *
1893             ioc->request_sz))/1024));
1894         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool: dma(0x%llx)\n",
1895             ioc->name, (unsigned long long) ioc->request_dma));
1896         total_sz += sz;
1897
1898         ioc->scsi_lookup = kcalloc(ioc->request_depth,
1899             sizeof(struct request_tracker), GFP_KERNEL);
1900         if (!ioc->scsi_lookup) {
1901                 printk(MPT2SAS_ERR_FMT "scsi_lookup: kcalloc failed\n",
1902                     ioc->name);
1903                 goto out;
1904         }
1905
1906          /* initialize some bits */
1907         for (i = 0; i < ioc->request_depth; i++)
1908                 ioc->scsi_lookup[i].smid = i + 1;
1909
1910         /* sense buffers, 4 byte align */
1911         sz = ioc->request_depth * SCSI_SENSE_BUFFERSIZE;
1912         ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
1913             0);
1914         if (!ioc->sense_dma_pool) {
1915                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_create failed\n",
1916                     ioc->name);
1917                 goto out;
1918         }
1919         ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
1920             &ioc->sense_dma);
1921         if (!ioc->sense) {
1922                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_alloc failed\n",
1923                     ioc->name);
1924                 goto out;
1925         }
1926         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
1927             "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
1928             "(%d kB)\n", ioc->name, ioc->sense, ioc->request_depth,
1929             SCSI_SENSE_BUFFERSIZE, sz/1024));
1930         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_dma(0x%llx)\n",
1931             ioc->name, (unsigned long long)ioc->sense_dma));
1932         total_sz += sz;
1933
1934         /* reply pool, 4 byte align */
1935         sz = ioc->reply_free_queue_depth * ioc->reply_sz;
1936         ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
1937             0);
1938         if (!ioc->reply_dma_pool) {
1939                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_create failed\n",
1940                     ioc->name);
1941                 goto out;
1942         }
1943         ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
1944             &ioc->reply_dma);
1945         if (!ioc->reply) {
1946                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_alloc failed\n",
1947                     ioc->name);
1948                 goto out;
1949         }
1950         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply pool(0x%p): depth"
1951             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->reply,
1952             ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
1953         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_dma(0x%llx)\n",
1954             ioc->name, (unsigned long long)ioc->reply_dma));
1955         total_sz += sz;
1956
1957         /* reply free queue, 16 byte align */
1958         sz = ioc->reply_free_queue_depth * 4;
1959         ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
1960             ioc->pdev, sz, 16, 0);
1961         if (!ioc->reply_free_dma_pool) {
1962                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_create "
1963                     "failed\n", ioc->name);
1964                 goto out;
1965         }
1966         ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
1967             &ioc->reply_free_dma);
1968         if (!ioc->reply_free) {
1969                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_alloc "
1970                     "failed\n", ioc->name);
1971                 goto out;
1972         }
1973         memset(ioc->reply_free, 0, sz);
1974         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free pool(0x%p): "
1975             "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
1976             ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
1977         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_dma"
1978             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->reply_free_dma));
1979         total_sz += sz;
1980
1981         /* reply post queue, 16 byte align */
1982         sz = ioc->reply_post_queue_depth * sizeof(Mpi2DefaultReplyDescriptor_t);
1983         ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
1984             ioc->pdev, sz, 16, 0);
1985         if (!ioc->reply_post_free_dma_pool) {
1986                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_create "
1987                     "failed\n", ioc->name);
1988                 goto out;
1989         }
1990         ioc->reply_post_free = pci_pool_alloc(ioc->reply_post_free_dma_pool ,
1991             GFP_KERNEL, &ioc->reply_post_free_dma);
1992         if (!ioc->reply_post_free) {
1993                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_alloc "
1994                     "failed\n", ioc->name);
1995                 goto out;
1996         }
1997         memset(ioc->reply_post_free, 0, sz);
1998         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply post free pool"
1999             "(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n",
2000             ioc->name, ioc->reply_post_free, ioc->reply_post_queue_depth, 8,
2001             sz/1024));
2002         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_post_free_dma = "
2003             "(0x%llx)\n", ioc->name, (unsigned long long)
2004             ioc->reply_post_free_dma));
2005         total_sz += sz;
2006
2007         ioc->config_page_sz = 512;
2008         ioc->config_page = pci_alloc_consistent(ioc->pdev,
2009             ioc->config_page_sz, &ioc->config_page_dma);
2010         if (!ioc->config_page) {
2011                 printk(MPT2SAS_ERR_FMT "config page: pci_pool_alloc "
2012                     "failed\n", ioc->name);
2013                 goto out;
2014         }
2015         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config page(0x%p): size"
2016             "(%d)\n", ioc->name, ioc->config_page, ioc->config_page_sz));
2017         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config_page_dma"
2018             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->config_page_dma));
2019         total_sz += ioc->config_page_sz;
2020
2021         printk(MPT2SAS_INFO_FMT "Allocated physical memory: size(%d kB)\n",
2022             ioc->name, total_sz/1024);
2023         printk(MPT2SAS_INFO_FMT "Current Controller Queue Depth(%d), "
2024             "Max Controller Queue Depth(%d)\n",
2025             ioc->name, ioc->shost->can_queue, facts->RequestCredit);
2026         printk(MPT2SAS_INFO_FMT "Scatter Gather Elements per IO(%d)\n",
2027             ioc->name, ioc->shost->sg_tablesize);
2028         return 0;
2029
2030  out:
2031         _base_release_memory_pools(ioc);
2032         return -ENOMEM;
2033 }
2034
2035
2036 /**
2037  * mpt2sas_base_get_iocstate - Get the current state of a MPT adapter.
2038  * @ioc: Pointer to MPT_ADAPTER structure
2039  * @cooked: Request raw or cooked IOC state
2040  *
2041  * Returns all IOC Doorbell register bits if cooked==0, else just the
2042  * Doorbell bits in MPI_IOC_STATE_MASK.
2043  */
2044 u32
2045 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked)
2046 {
2047         u32 s, sc;
2048
2049         s = readl(&ioc->chip->Doorbell);
2050         sc = s & MPI2_IOC_STATE_MASK;
2051         return cooked ? sc : s;
2052 }
2053
2054 /**
2055  * _base_wait_on_iocstate - waiting on a particular ioc state
2056  * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
2057  * @timeout: timeout in second
2058  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2059  *
2060  * Returns 0 for success, non-zero for failure.
2061  */
2062 static int
2063 _base_wait_on_iocstate(struct MPT2SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
2064     int sleep_flag)
2065 {
2066         u32 count, cntdn;
2067         u32 current_state;
2068
2069         count = 0;
2070         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2071         do {
2072                 current_state = mpt2sas_base_get_iocstate(ioc, 1);
2073                 if (current_state == ioc_state)
2074                         return 0;
2075                 if (count && current_state == MPI2_IOC_STATE_FAULT)
2076                         break;
2077                 if (sleep_flag == CAN_SLEEP)
2078                         msleep(1);
2079                 else
2080                         udelay(500);
2081                 count++;
2082         } while (--cntdn);
2083
2084         return current_state;
2085 }
2086
2087 /**
2088  * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
2089  * a write to the doorbell)
2090  * @ioc: per adapter object
2091  * @timeout: timeout in second
2092  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2093  *
2094  * Returns 0 for success, non-zero for failure.
2095  *
2096  * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
2097  */
2098 static int
2099 _base_wait_for_doorbell_int(struct MPT2SAS_ADAPTER *ioc, int timeout,
2100     int sleep_flag)
2101 {
2102         u32 cntdn, count;
2103         u32 int_status;
2104
2105         count = 0;
2106         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2107         do {
2108                 int_status = readl(&ioc->chip->HostInterruptStatus);
2109                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2110                         dhsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
2111                             "successfull count(%d), timeout(%d)\n", ioc->name,
2112                             __func__, count, timeout));
2113                         return 0;
2114                 }
2115                 if (sleep_flag == CAN_SLEEP)
2116                         msleep(1);
2117                 else
2118                         udelay(500);
2119                 count++;
2120         } while (--cntdn);
2121
2122         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2123             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2124         return -EFAULT;
2125 }
2126
2127 /**
2128  * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
2129  * @ioc: per adapter object
2130  * @timeout: timeout in second
2131  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2132  *
2133  * Returns 0 for success, non-zero for failure.
2134  *
2135  * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
2136  * doorbell.
2137  */
2138 static int
2139 _base_wait_for_doorbell_ack(struct MPT2SAS_ADAPTER *ioc, int timeout,
2140     int sleep_flag)
2141 {
2142         u32 cntdn, count;
2143         u32 int_status;
2144         u32 doorbell;
2145
2146         count = 0;
2147         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2148         do {
2149                 int_status = readl(&ioc->chip->HostInterruptStatus);
2150                 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
2151                         dhsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
2152                             "successfull count(%d), timeout(%d)\n", ioc->name,
2153                             __func__, count, timeout));
2154                         return 0;
2155                 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2156                         doorbell = readl(&ioc->chip->Doorbell);
2157                         if ((doorbell & MPI2_IOC_STATE_MASK) ==
2158                             MPI2_IOC_STATE_FAULT) {
2159                                 mpt2sas_base_fault_info(ioc , doorbell);
2160                                 return -EFAULT;
2161                         }
2162                 } else if (int_status == 0xFFFFFFFF)
2163                         goto out;
2164
2165                 if (sleep_flag == CAN_SLEEP)
2166                         msleep(1);
2167                 else
2168                         udelay(500);
2169                 count++;
2170         } while (--cntdn);
2171
2172  out:
2173         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2174             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2175         return -EFAULT;
2176 }
2177
2178 /**
2179  * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
2180  * @ioc: per adapter object
2181  * @timeout: timeout in second
2182  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2183  *
2184  * Returns 0 for success, non-zero for failure.
2185  *
2186  */
2187 static int
2188 _base_wait_for_doorbell_not_used(struct MPT2SAS_ADAPTER *ioc, int timeout,
2189     int sleep_flag)
2190 {
2191         u32 cntdn, count;
2192         u32 doorbell_reg;
2193
2194         count = 0;
2195         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2196         do {
2197                 doorbell_reg = readl(&ioc->chip->Doorbell);
2198                 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
2199                         dhsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
2200                             "successfull count(%d), timeout(%d)\n", ioc->name,
2201                             __func__, count, timeout));
2202                         return 0;
2203                 }
2204                 if (sleep_flag == CAN_SLEEP)
2205                         msleep(1);
2206                 else
2207                         udelay(500);
2208                 count++;
2209         } while (--cntdn);
2210
2211         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2212             "doorbell_reg(%x)!\n", ioc->name, __func__, count, doorbell_reg);
2213         return -EFAULT;
2214 }
2215
2216 /**
2217  * _base_send_ioc_reset - send doorbell reset
2218  * @ioc: per adapter object
2219  * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
2220  * @timeout: timeout in second
2221  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2222  *
2223  * Returns 0 for success, non-zero for failure.
2224  */
2225 static int
2226 _base_send_ioc_reset(struct MPT2SAS_ADAPTER *ioc, u8 reset_type, int timeout,
2227     int sleep_flag)
2228 {
2229         u32 ioc_state;
2230         int r = 0;
2231
2232         if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
2233                 printk(MPT2SAS_ERR_FMT "%s: unknown reset_type\n",
2234                     ioc->name, __func__);
2235                 return -EFAULT;
2236         }
2237
2238         if (!(ioc->facts.IOCCapabilities &
2239            MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
2240                 return -EFAULT;
2241
2242         printk(MPT2SAS_INFO_FMT "sending message unit reset !!\n", ioc->name);
2243
2244         writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
2245             &ioc->chip->Doorbell);
2246         if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
2247                 r = -EFAULT;
2248                 goto out;
2249         }
2250         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
2251             timeout, sleep_flag);
2252         if (ioc_state) {
2253                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
2254                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
2255                 r = -EFAULT;
2256                 goto out;
2257         }
2258  out:
2259         printk(MPT2SAS_INFO_FMT "message unit reset: %s\n",
2260             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
2261         return r;
2262 }
2263
2264 /**
2265  * _base_handshake_req_reply_wait - send request thru doorbell interface
2266  * @ioc: per adapter object
2267  * @request_bytes: request length
2268  * @request: pointer having request payload
2269  * @reply_bytes: reply length
2270  * @reply: pointer to reply payload
2271  * @timeout: timeout in second
2272  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2273  *
2274  * Returns 0 for success, non-zero for failure.
2275  */
2276 static int
2277 _base_handshake_req_reply_wait(struct MPT2SAS_ADAPTER *ioc, int request_bytes,
2278     u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
2279 {
2280         MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
2281         int i;
2282         u8 failed;
2283         u16 dummy;
2284         u32 *mfp;
2285
2286         /* make sure doorbell is not in use */
2287         if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
2288                 printk(MPT2SAS_ERR_FMT "doorbell is in use "
2289                     " (line=%d)\n", ioc->name, __LINE__);
2290                 return -EFAULT;
2291         }
2292
2293         /* clear pending doorbell interrupts from previous state changes */
2294         if (readl(&ioc->chip->HostInterruptStatus) &
2295             MPI2_HIS_IOC2SYS_DB_STATUS)
2296                 writel(0, &ioc->chip->HostInterruptStatus);
2297
2298         /* send message to ioc */
2299         writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
2300             ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
2301             &ioc->chip->Doorbell);
2302
2303         if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
2304                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2305                    "int failed (line=%d)\n", ioc->name, __LINE__);
2306                 return -EFAULT;
2307         }
2308         writel(0, &ioc->chip->HostInterruptStatus);
2309
2310         if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
2311                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2312                     "ack failed (line=%d)\n", ioc->name, __LINE__);
2313                 return -EFAULT;
2314         }
2315
2316         /* send message 32-bits at a time */
2317         for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
2318                 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
2319                 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
2320                         failed = 1;
2321         }
2322
2323         if (failed) {
2324                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2325                     "sending request failed (line=%d)\n", ioc->name, __LINE__);
2326                 return -EFAULT;
2327         }
2328
2329         /* now wait for the reply */
2330         if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
2331                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2332                    "int failed (line=%d)\n", ioc->name, __LINE__);
2333                 return -EFAULT;
2334         }
2335
2336         /* read the first two 16-bits, it gives the total length of the reply */
2337         reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
2338             & MPI2_DOORBELL_DATA_MASK);
2339         writel(0, &ioc->chip->HostInterruptStatus);
2340         if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
2341                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2342                    "int failed (line=%d)\n", ioc->name, __LINE__);
2343                 return -EFAULT;
2344         }
2345         reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
2346             & MPI2_DOORBELL_DATA_MASK);
2347         writel(0, &ioc->chip->HostInterruptStatus);
2348
2349         for (i = 2; i < default_reply->MsgLength * 2; i++)  {
2350                 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
2351                         printk(MPT2SAS_ERR_FMT "doorbell "
2352                             "handshake int failed (line=%d)\n", ioc->name,
2353                             __LINE__);
2354                         return -EFAULT;
2355                 }
2356                 if (i >=  reply_bytes/2) /* overflow case */
2357                         dummy = readl(&ioc->chip->Doorbell);
2358                 else
2359                         reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
2360                             & MPI2_DOORBELL_DATA_MASK);
2361                 writel(0, &ioc->chip->HostInterruptStatus);
2362         }
2363
2364         _base_wait_for_doorbell_int(ioc, 5, sleep_flag);
2365         if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
2366                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "doorbell is in use "
2367                     " (line=%d)\n", ioc->name, __LINE__));
2368         }
2369         writel(0, &ioc->chip->HostInterruptStatus);
2370
2371         if (ioc->logging_level & MPT_DEBUG_INIT) {
2372                 mfp = (u32 *)reply;
2373                 printk(KERN_DEBUG "\toffset:data\n");
2374                 for (i = 0; i < reply_bytes/4; i++)
2375                         printk(KERN_DEBUG "\t[0x%02x]:%08x\n", i*4,
2376                             le32_to_cpu(mfp[i]));
2377         }
2378         return 0;
2379 }
2380
2381 /**
2382  * mpt2sas_base_sas_iounit_control - send sas iounit control to FW
2383  * @ioc: per adapter object
2384  * @mpi_reply: the reply payload from FW
2385  * @mpi_request: the request payload sent to FW
2386  *
2387  * The SAS IO Unit Control Request message allows the host to perform low-level
2388  * operations, such as resets on the PHYs of the IO Unit, also allows the host
2389  * to obtain the IOC assigned device handles for a device if it has other
2390  * identifying information about the device, in addition allows the host to
2391  * remove IOC resources associated with the device.
2392  *
2393  * Returns 0 for success, non-zero for failure.
2394  */
2395 int
2396 mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
2397     Mpi2SasIoUnitControlReply_t *mpi_reply,
2398     Mpi2SasIoUnitControlRequest_t *mpi_request)
2399 {
2400         u16 smid;
2401         u32 ioc_state;
2402         unsigned long timeleft;
2403         u8 issue_reset;
2404         int rc;
2405         void *request;
2406         u16 wait_state_count;
2407
2408         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2409             __func__));
2410
2411         mutex_lock(&ioc->base_cmds.mutex);
2412
2413         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
2414                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
2415                     ioc->name, __func__);
2416                 rc = -EAGAIN;
2417                 goto out;
2418         }
2419
2420         wait_state_count = 0;
2421         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
2422         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
2423                 if (wait_state_count++ == 10) {
2424                         printk(MPT2SAS_ERR_FMT
2425                             "%s: failed due to ioc not operational\n",
2426                             ioc->name, __func__);
2427                         rc = -EFAULT;
2428                         goto out;
2429                 }
2430                 ssleep(1);
2431                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
2432                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
2433                     "operational state(count=%d)\n", ioc->name,
2434                     __func__, wait_state_count);
2435         }
2436
2437         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
2438         if (!smid) {
2439                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2440                     ioc->name, __func__);
2441                 rc = -EAGAIN;
2442                 goto out;
2443         }
2444
2445         rc = 0;
2446         ioc->base_cmds.status = MPT2_CMD_PENDING;
2447         request = mpt2sas_base_get_msg_frame(ioc, smid);
2448         ioc->base_cmds.smid = smid;
2449         memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
2450         if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
2451             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
2452                 ioc->ioc_link_reset_in_progress = 1;
2453         mpt2sas_base_put_smid_default(ioc, smid);
2454         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
2455             msecs_to_jiffies(10000));
2456         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
2457             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
2458             ioc->ioc_link_reset_in_progress)
2459                 ioc->ioc_link_reset_in_progress = 0;
2460         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
2461                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
2462                     ioc->name, __func__);
2463                 _debug_dump_mf(mpi_request,
2464                     sizeof(Mpi2SasIoUnitControlRequest_t)/4);
2465                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
2466                         issue_reset = 1;
2467                 goto issue_host_reset;
2468         }
2469         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
2470                 memcpy(mpi_reply, ioc->base_cmds.reply,
2471                     sizeof(Mpi2SasIoUnitControlReply_t));
2472         else
2473                 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
2474         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2475         goto out;
2476
2477  issue_host_reset:
2478         if (issue_reset)
2479                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2480                     FORCE_BIG_HAMMER);
2481         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2482         rc = -EFAULT;
2483  out:
2484         mutex_unlock(&ioc->base_cmds.mutex);
2485         return rc;
2486 }
2487
2488
2489 /**
2490  * mpt2sas_base_scsi_enclosure_processor - sending request to sep device
2491  * @ioc: per adapter object
2492  * @mpi_reply: the reply payload from FW
2493  * @mpi_request: the request payload sent to FW
2494  *
2495  * The SCSI Enclosure Processor request message causes the IOC to
2496  * communicate with SES devices to control LED status signals.
2497  *
2498  * Returns 0 for success, non-zero for failure.
2499  */
2500 int
2501 mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
2502     Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
2503 {
2504         u16 smid;
2505         u32 ioc_state;
2506         unsigned long timeleft;
2507         u8 issue_reset;
2508         int rc;
2509         void *request;
2510         u16 wait_state_count;
2511
2512         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2513             __func__));
2514
2515         mutex_lock(&ioc->base_cmds.mutex);
2516
2517         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
2518                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
2519                     ioc->name, __func__);
2520                 rc = -EAGAIN;
2521                 goto out;
2522         }
2523
2524         wait_state_count = 0;
2525         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
2526         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
2527                 if (wait_state_count++ == 10) {
2528                         printk(MPT2SAS_ERR_FMT
2529                             "%s: failed due to ioc not operational\n",
2530                             ioc->name, __func__);
2531                         rc = -EFAULT;
2532                         goto out;
2533                 }
2534                 ssleep(1);
2535                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
2536                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
2537                     "operational state(count=%d)\n", ioc->name,
2538                     __func__, wait_state_count);
2539         }
2540
2541         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
2542         if (!smid) {
2543                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2544                     ioc->name, __func__);
2545                 rc = -EAGAIN;
2546                 goto out;
2547         }
2548
2549         rc = 0;
2550         ioc->base_cmds.status = MPT2_CMD_PENDING;
2551         request = mpt2sas_base_get_msg_frame(ioc, smid);
2552         ioc->base_cmds.smid = smid;
2553         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
2554         mpt2sas_base_put_smid_default(ioc, smid);
2555         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
2556             msecs_to_jiffies(10000));
2557         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
2558                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
2559                     ioc->name, __func__);
2560                 _debug_dump_mf(mpi_request,
2561                     sizeof(Mpi2SepRequest_t)/4);
2562                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
2563                         issue_reset = 1;
2564                 goto issue_host_reset;
2565         }
2566         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
2567                 memcpy(mpi_reply, ioc->base_cmds.reply,
2568                     sizeof(Mpi2SepReply_t));
2569         else
2570                 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
2571         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2572         goto out;
2573
2574  issue_host_reset:
2575         if (issue_reset)
2576                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2577                     FORCE_BIG_HAMMER);
2578         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2579         rc = -EFAULT;
2580  out:
2581         mutex_unlock(&ioc->base_cmds.mutex);
2582         return rc;
2583 }
2584
2585 /**
2586  * _base_get_port_facts - obtain port facts reply and save in ioc
2587  * @ioc: per adapter object
2588  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2589  *
2590  * Returns 0 for success, non-zero for failure.
2591  */
2592 static int
2593 _base_get_port_facts(struct MPT2SAS_ADAPTER *ioc, int port, int sleep_flag)
2594 {
2595         Mpi2PortFactsRequest_t mpi_request;
2596         Mpi2PortFactsReply_t mpi_reply, *pfacts;
2597         int mpi_reply_sz, mpi_request_sz, r;
2598
2599         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2600             __func__));
2601
2602         mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
2603         mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
2604         memset(&mpi_request, 0, mpi_request_sz);
2605         mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
2606         mpi_request.PortNumber = port;
2607         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
2608             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
2609
2610         if (r != 0) {
2611                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
2612                     ioc->name, __func__, r);
2613                 return r;
2614         }
2615
2616         pfacts = &ioc->pfacts[port];
2617         memset(pfacts, 0, sizeof(Mpi2PortFactsReply_t));
2618         pfacts->PortNumber = mpi_reply.PortNumber;
2619         pfacts->VP_ID = mpi_reply.VP_ID;
2620         pfacts->VF_ID = mpi_reply.VF_ID;
2621         pfacts->MaxPostedCmdBuffers =
2622             le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
2623
2624         return 0;
2625 }
2626
2627 /**
2628  * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
2629  * @ioc: per adapter object
2630  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2631  *
2632  * Returns 0 for success, non-zero for failure.
2633  */
2634 static int
2635 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
2636 {
2637         Mpi2IOCFactsRequest_t mpi_request;
2638         Mpi2IOCFactsReply_t mpi_reply, *facts;
2639         int mpi_reply_sz, mpi_request_sz, r;
2640
2641         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2642             __func__));
2643
2644         mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
2645         mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
2646         memset(&mpi_request, 0, mpi_request_sz);
2647         mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
2648         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
2649             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
2650
2651         if (r != 0) {
2652                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
2653                     ioc->name, __func__, r);
2654                 return r;
2655         }
2656
2657         facts = &ioc->facts;
2658         memset(facts, 0, sizeof(Mpi2IOCFactsReply_t));
2659         facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
2660         facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
2661         facts->VP_ID = mpi_reply.VP_ID;
2662         facts->VF_ID = mpi_reply.VF_ID;
2663         facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
2664         facts->MaxChainDepth = mpi_reply.MaxChainDepth;
2665         facts->WhoInit = mpi_reply.WhoInit;
2666         facts->NumberOfPorts = mpi_reply.NumberOfPorts;
2667         facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
2668         facts->MaxReplyDescriptorPostQueueDepth =
2669             le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
2670         facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
2671         facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
2672         if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
2673                 ioc->ir_firmware = 1;
2674         facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
2675         facts->IOCRequestFrameSize =
2676             le16_to_cpu(mpi_reply.IOCRequestFrameSize);
2677         facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
2678         facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
2679         ioc->shost->max_id = -1;
2680         facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
2681         facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
2682         facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
2683         facts->HighPriorityCredit =
2684             le16_to_cpu(mpi_reply.HighPriorityCredit);
2685         facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
2686         facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
2687
2688         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hba queue depth(%d), "
2689             "max chains per io(%d)\n", ioc->name, facts->RequestCredit,
2690             facts->MaxChainDepth));
2691         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request frame size(%d), "
2692             "reply frame size(%d)\n", ioc->name,
2693             facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
2694         return 0;
2695 }
2696
2697 /**
2698  * _base_send_ioc_init - send ioc_init to firmware
2699  * @ioc: per adapter object
2700  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2701  *
2702  * Returns 0 for success, non-zero for failure.
2703  */
2704 static int
2705 _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
2706 {
2707         Mpi2IOCInitRequest_t mpi_request;
2708         Mpi2IOCInitReply_t mpi_reply;
2709         int r;
2710
2711         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2712             __func__));
2713
2714         memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
2715         mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
2716         mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
2717         mpi_request.VF_ID = 0; /* TODO */
2718         mpi_request.VP_ID = 0;
2719         mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
2720         mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
2721
2722         /* In MPI Revision I (0xA), the SystemReplyFrameSize(offset 0x18) was
2723          * removed and made reserved.  For those with older firmware will need
2724          * this fix. It was decided that the Reply and Request frame sizes are
2725          * the same.
2726          */
2727         if ((ioc->facts.HeaderVersion >> 8) < 0xA) {
2728                 mpi_request.Reserved7 = cpu_to_le16(ioc->reply_sz);
2729 /*              mpi_request.SystemReplyFrameSize =
2730  *               cpu_to_le16(ioc->reply_sz);
2731  */
2732         }
2733
2734         mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
2735         mpi_request.ReplyDescriptorPostQueueDepth =
2736             cpu_to_le16(ioc->reply_post_queue_depth);
2737         mpi_request.ReplyFreeQueueDepth =
2738             cpu_to_le16(ioc->reply_free_queue_depth);
2739
2740 #if BITS_PER_LONG > 32
2741         mpi_request.SenseBufferAddressHigh =
2742             cpu_to_le32(ioc->sense_dma >> 32);
2743         mpi_request.SystemReplyAddressHigh =
2744             cpu_to_le32(ioc->reply_dma >> 32);
2745         mpi_request.SystemRequestFrameBaseAddress =
2746             cpu_to_le64(ioc->request_dma);
2747         mpi_request.ReplyFreeQueueAddress =
2748             cpu_to_le64(ioc->reply_free_dma);
2749         mpi_request.ReplyDescriptorPostQueueAddress =
2750             cpu_to_le64(ioc->reply_post_free_dma);
2751 #else
2752         mpi_request.SystemRequestFrameBaseAddress =
2753             cpu_to_le32(ioc->request_dma);
2754         mpi_request.ReplyFreeQueueAddress =
2755             cpu_to_le32(ioc->reply_free_dma);
2756         mpi_request.ReplyDescriptorPostQueueAddress =
2757             cpu_to_le32(ioc->reply_post_free_dma);
2758 #endif
2759
2760         if (ioc->logging_level & MPT_DEBUG_INIT) {
2761                 u32 *mfp;
2762                 int i;
2763
2764                 mfp = (u32 *)&mpi_request;
2765                 printk(KERN_DEBUG "\toffset:data\n");
2766                 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
2767                         printk(KERN_DEBUG "\t[0x%02x]:%08x\n", i*4,
2768                             le32_to_cpu(mfp[i]));
2769         }
2770
2771         r = _base_handshake_req_reply_wait(ioc,
2772             sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
2773             sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
2774             sleep_flag);
2775
2776         if (r != 0) {
2777                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
2778                     ioc->name, __func__, r);
2779                 return r;
2780         }
2781
2782         if (mpi_reply.IOCStatus != MPI2_IOCSTATUS_SUCCESS ||
2783             mpi_reply.IOCLogInfo) {
2784                 printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
2785                 r = -EIO;
2786         }
2787
2788         return 0;
2789 }
2790
2791 /**
2792  * _base_send_port_enable - send port_enable(discovery stuff) to firmware
2793  * @ioc: per adapter object
2794  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2795  *
2796  * Returns 0 for success, non-zero for failure.
2797  */
2798 static int
2799 _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
2800 {
2801         Mpi2PortEnableRequest_t *mpi_request;
2802         u32 ioc_state;
2803         unsigned long timeleft;
2804         int r = 0;
2805         u16 smid;
2806
2807         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
2808
2809         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
2810                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
2811                     ioc->name, __func__);
2812                 return -EAGAIN;
2813         }
2814
2815         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
2816         if (!smid) {
2817                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2818                     ioc->name, __func__);
2819                 return -EAGAIN;
2820         }
2821
2822         ioc->base_cmds.status = MPT2_CMD_PENDING;
2823         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
2824         ioc->base_cmds.smid = smid;
2825         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
2826         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
2827         mpi_request->VF_ID = 0; /* TODO */
2828         mpi_request->VP_ID = 0;
2829
2830         mpt2sas_base_put_smid_default(ioc, smid);
2831         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
2832             300*HZ);
2833         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
2834                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
2835                     ioc->name, __func__);
2836                 _debug_dump_mf(mpi_request,
2837                     sizeof(Mpi2PortEnableRequest_t)/4);
2838                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
2839                         r = -EFAULT;
2840                 else
2841                         r = -ETIME;
2842                 goto out;
2843         } else
2844                 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: complete\n",
2845                     ioc->name, __func__));
2846
2847         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_OPERATIONAL,
2848             60, sleep_flag);
2849         if (ioc_state) {
2850                 printk(MPT2SAS_ERR_FMT "%s: failed going to operational state "
2851                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
2852                 r = -EFAULT;
2853         }
2854  out:
2855         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2856         printk(MPT2SAS_INFO_FMT "port enable: %s\n",
2857             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
2858         return r;
2859 }
2860
2861 /**
2862  * _base_unmask_events - turn on notification for this event
2863  * @ioc: per adapter object
2864  * @event: firmware event
2865  *
2866  * The mask is stored in ioc->event_masks.
2867  */
2868 static void
2869 _base_unmask_events(struct MPT2SAS_ADAPTER *ioc, u16 event)
2870 {
2871         u32 desired_event;
2872
2873         if (event >= 128)
2874                 return;
2875
2876         desired_event = (1 << (event % 32));
2877
2878         if (event < 32)
2879                 ioc->event_masks[0] &= ~desired_event;
2880         else if (event < 64)
2881                 ioc->event_masks[1] &= ~desired_event;
2882         else if (event < 96)
2883                 ioc->event_masks[2] &= ~desired_event;
2884         else if (event < 128)
2885                 ioc->event_masks[3] &= ~desired_event;
2886 }
2887
2888 /**
2889  * _base_event_notification - send event notification
2890  * @ioc: per adapter object
2891  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2892  *
2893  * Returns 0 for success, non-zero for failure.
2894  */
2895 static int
2896 _base_event_notification(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
2897 {
2898         Mpi2EventNotificationRequest_t *mpi_request;
2899         unsigned long timeleft;
2900         u16 smid;
2901         int r = 0;
2902         int i;
2903
2904         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2905             __func__));
2906
2907         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
2908                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
2909                     ioc->name, __func__);
2910                 return -EAGAIN;
2911         }
2912
2913         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
2914         if (!smid) {
2915                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2916                     ioc->name, __func__);
2917                 return -EAGAIN;
2918         }
2919         ioc->base_cmds.status = MPT2_CMD_PENDING;
2920         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
2921         ioc->base_cmds.smid = smid;
2922         memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
2923         mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
2924         mpi_request->VF_ID = 0; /* TODO */
2925         mpi_request->VP_ID = 0;
2926         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
2927                 mpi_request->EventMasks[i] =
2928                     le32_to_cpu(ioc->event_masks[i]);
2929         mpt2sas_base_put_smid_default(ioc, smid);
2930         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
2931         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
2932                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
2933                     ioc->name, __func__);
2934                 _debug_dump_mf(mpi_request,
2935                     sizeof(Mpi2EventNotificationRequest_t)/4);
2936                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
2937                         r = -EFAULT;
2938                 else
2939                         r = -ETIME;
2940         } else
2941                 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: complete\n",
2942                     ioc->name, __func__));
2943         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2944         return r;
2945 }
2946
2947 /**
2948  * mpt2sas_base_validate_event_type - validating event types
2949  * @ioc: per adapter object
2950  * @event: firmware event
2951  *
2952  * This will turn on firmware event notification when application
2953  * ask for that event. We don't mask events that are already enabled.
2954  */
2955 void
2956 mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type)
2957 {
2958         int i, j;
2959         u32 event_mask, desired_event;
2960         u8 send_update_to_fw;
2961
2962         for (i = 0, send_update_to_fw = 0; i <
2963             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
2964                 event_mask = ~event_type[i];
2965                 desired_event = 1;
2966                 for (j = 0; j < 32; j++) {
2967                         if (!(event_mask & desired_event) &&
2968                             (ioc->event_masks[i] & desired_event)) {
2969                                 ioc->event_masks[i] &= ~desired_event;
2970                                 send_update_to_fw = 1;
2971                         }
2972                         desired_event = (desired_event << 1);
2973                 }
2974         }
2975
2976         if (!send_update_to_fw)
2977                 return;
2978
2979         mutex_lock(&ioc->base_cmds.mutex);
2980         _base_event_notification(ioc, CAN_SLEEP);
2981         mutex_unlock(&ioc->base_cmds.mutex);
2982 }
2983
2984 /**
2985  * _base_diag_reset - the "big hammer" start of day reset
2986  * @ioc: per adapter object
2987  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2988  *
2989  * Returns 0 for success, non-zero for failure.
2990  */
2991 static int
2992 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
2993 {
2994         u32 host_diagnostic;
2995         u32 ioc_state;
2996         u32 count;
2997         u32 hcb_size;
2998
2999         printk(MPT2SAS_INFO_FMT "sending diag reset !!\n", ioc->name);
3000
3001         _base_save_msix_table(ioc);
3002
3003         drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "clear interrupts\n",
3004             ioc->name));
3005         writel(0, &ioc->chip->HostInterruptStatus);
3006
3007         count = 0;
3008         do {
3009                 /* Write magic sequence to WriteSequence register
3010                  * Loop until in diagnostic mode
3011                  */
3012                 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "write magic "
3013                     "sequence\n", ioc->name));
3014                 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3015                 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
3016                 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
3017                 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
3018                 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
3019                 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
3020                 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
3021
3022                 /* wait 100 msec */
3023                 if (sleep_flag == CAN_SLEEP)
3024                         msleep(100);
3025                 else
3026                         mdelay(100);
3027
3028                 if (count++ > 20)
3029                         goto out;
3030
3031                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3032                 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "wrote magic "
3033                     "sequence: count(%d), host_diagnostic(0x%08x)\n",
3034                     ioc->name, count, host_diagnostic));
3035
3036         } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
3037
3038         hcb_size = readl(&ioc->chip->HCBSize);
3039
3040         drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "diag reset: issued\n",
3041             ioc->name));
3042         writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
3043              &ioc->chip->HostDiagnostic);
3044
3045         /* don't access any registers for 50 milliseconds */
3046         msleep(50);
3047
3048         /* 300 second max wait */
3049         for (count = 0; count < 3000000 ; count++) {
3050
3051                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3052
3053                 if (host_diagnostic == 0xFFFFFFFF)
3054                         goto out;
3055                 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
3056                         break;
3057
3058                 /* wait 100 msec */
3059                 if (sleep_flag == CAN_SLEEP)
3060                         msleep(1);
3061                 else
3062                         mdelay(1);
3063         }
3064
3065         if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
3066
3067                 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "restart the adapter "
3068                     "assuming the HCB Address points to good F/W\n",
3069                     ioc->name));
3070                 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
3071                 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
3072                 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
3073
3074                 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT
3075                     "re-enable the HCDW\n", ioc->name));
3076                 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
3077                     &ioc->chip->HCBSize);
3078         }
3079
3080         drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "restart the adapter\n",
3081             ioc->name));
3082         writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
3083             &ioc->chip->HostDiagnostic);
3084
3085         drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "disable writes to the "
3086             "diagnostic register\n", ioc->name));
3087         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3088
3089         drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "Wait for FW to go to the "
3090             "READY state\n", ioc->name));
3091         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
3092             sleep_flag);
3093         if (ioc_state) {
3094                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3095                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3096                 goto out;
3097         }
3098
3099         _base_restore_msix_table(ioc);
3100         printk(MPT2SAS_INFO_FMT "diag reset: SUCCESS\n", ioc->name);
3101         return 0;
3102
3103  out:
3104         printk(MPT2SAS_ERR_FMT "diag reset: FAILED\n", ioc->name);
3105         return -EFAULT;
3106 }
3107
3108 /**
3109  * _base_make_ioc_ready - put controller in READY state
3110  * @ioc: per adapter object
3111  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3112  * @type: FORCE_BIG_HAMMER or SOFT_RESET
3113  *
3114  * Returns 0 for success, non-zero for failure.
3115  */
3116 static int
3117 _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
3118     enum reset_type type)
3119 {
3120         u32 ioc_state;
3121
3122         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
3123             __func__));
3124
3125         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
3126         dhsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: ioc_state(0x%08x)\n",
3127             ioc->name, __func__, ioc_state));
3128
3129         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
3130                 return 0;
3131
3132         if (ioc_state & MPI2_DOORBELL_USED) {
3133                 dhsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "unexpected doorbell "
3134                     "active!\n", ioc->name));
3135                 goto issue_diag_reset;
3136         }
3137
3138         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
3139                 mpt2sas_base_fault_info(ioc, ioc_state &
3140                     MPI2_DOORBELL_DATA_MASK);
3141                 goto issue_diag_reset;
3142         }
3143
3144         if (type == FORCE_BIG_HAMMER)
3145                 goto issue_diag_reset;
3146
3147         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
3148                 if (!(_base_send_ioc_reset(ioc,
3149                     MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP)))
3150                         return 0;
3151
3152  issue_diag_reset:
3153         return _base_diag_reset(ioc, CAN_SLEEP);
3154 }
3155
3156 /**
3157  * _base_make_ioc_operational - put controller in OPERATIONAL state
3158  * @ioc: per adapter object
3159  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3160  *
3161  * Returns 0 for success, non-zero for failure.
3162  */
3163 static int
3164 _base_make_ioc_operational(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3165 {
3166         int r, i;
3167         unsigned long   flags;
3168         u32 reply_address;
3169
3170         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
3171             __func__));
3172
3173         /* initialize the scsi lookup free list */
3174         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3175         INIT_LIST_HEAD(&ioc->free_list);
3176         for (i = 0; i < ioc->request_depth; i++) {
3177                 ioc->scsi_lookup[i].cb_idx = 0xFF;
3178                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
3179                     &ioc->free_list);
3180         }
3181         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3182
3183         /* initialize Reply Free Queue */
3184         for (i = 0, reply_address = (u32)ioc->reply_dma ;
3185             i < ioc->reply_free_queue_depth ; i++, reply_address +=
3186             ioc->reply_sz)
3187                 ioc->reply_free[i] = cpu_to_le32(reply_address);
3188
3189         /* initialize Reply Post Free Queue */
3190         for (i = 0; i < ioc->reply_post_queue_depth; i++)
3191                 ioc->reply_post_free[i].Words = ULLONG_MAX;
3192
3193         r = _base_send_ioc_init(ioc, sleep_flag);
3194         if (r)
3195                 return r;
3196
3197         /* initialize the index's */
3198         ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
3199         ioc->reply_post_host_index = 0;
3200         writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
3201         writel(0, &ioc->chip->ReplyPostHostIndex);
3202
3203         _base_unmask_interrupts(ioc);
3204         r = _base_event_notification(ioc, sleep_flag);
3205         if (r)
3206                 return r;
3207
3208         if (sleep_flag == CAN_SLEEP)
3209                 _base_static_config_pages(ioc);
3210
3211         r = _base_send_port_enable(ioc, sleep_flag);
3212         if (r)
3213                 return r;
3214
3215         return r;
3216 }
3217
3218 /**
3219  * mpt2sas_base_free_resources - free resources controller resources (io/irq/memap)
3220  * @ioc: per adapter object
3221  *
3222  * Return nothing.
3223  */
3224 void
3225 mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
3226 {
3227         struct pci_dev *pdev = ioc->pdev;
3228
3229         dexitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
3230             __func__));
3231
3232         _base_mask_interrupts(ioc);
3233         _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
3234         if (ioc->pci_irq) {
3235                 synchronize_irq(pdev->irq);
3236                 free_irq(ioc->pci_irq, ioc);
3237         }
3238         _base_disable_msix(ioc);
3239         if (ioc->chip_phys)
3240                 iounmap(ioc->chip);
3241         ioc->pci_irq = -1;
3242         ioc->chip_phys = 0;
3243         pci_release_selected_regions(ioc->pdev, ioc->bars);
3244         pci_disable_device(pdev);
3245         return;
3246 }
3247
3248 /**
3249  * mpt2sas_base_attach - attach controller instance
3250  * @ioc: per adapter object
3251  *
3252  * Returns 0 for success, non-zero for failure.
3253  */
3254 int
3255 mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
3256 {
3257         int r, i;
3258
3259         dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
3260             __func__));
3261
3262         r = mpt2sas_base_map_resources(ioc);
3263         if (r)
3264                 return r;
3265
3266         pci_set_drvdata(ioc->pdev, ioc->shost);
3267         r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
3268         if (r)
3269                 goto out_free_resources;
3270
3271         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
3272         if (r)
3273                 goto out_free_resources;
3274
3275         r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
3276         if (r)
3277                 goto out_free_resources;
3278
3279         init_waitqueue_head(&ioc->reset_wq);
3280
3281         /* base internal command bits */
3282         mutex_init(&ioc->base_cmds.mutex);
3283         init_completion(&ioc->base_cmds.done);
3284         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
3285         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3286
3287         /* transport internal command bits */
3288         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
3289         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
3290         mutex_init(&ioc->transport_cmds.mutex);
3291         init_completion(&ioc->transport_cmds.done);
3292
3293         /* task management internal command bits */
3294         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
3295         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
3296         mutex_init(&ioc->tm_cmds.mutex);
3297
3298         /* config page internal command bits */
3299         ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
3300         ioc->config_cmds.status = MPT2_CMD_NOT_USED;
3301         mutex_init(&ioc->config_cmds.mutex);
3302
3303         /* ctl module internal command bits */
3304         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
3305         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
3306         mutex_init(&ioc->ctl_cmds.mutex);
3307         init_completion(&ioc->ctl_cmds.done);
3308
3309         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
3310                 ioc->event_masks[i] = -1;
3311
3312         /* here we enable the events we care about */
3313         _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
3314         _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
3315         _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
3316         _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
3317         _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
3318         _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
3319         _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
3320         _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
3321         _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
3322         _base_unmask_events(ioc, MPI2_EVENT_TASK_SET_FULL);
3323         _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
3324
3325         ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
3326             sizeof(Mpi2PortFactsReply_t), GFP_KERNEL);
3327         if (!ioc->pfacts)
3328                 goto out_free_resources;
3329
3330         for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
3331                 r = _base_get_port_facts(ioc, i, CAN_SLEEP);
3332                 if (r)
3333                         goto out_free_resources;
3334         }
3335         r = _base_make_ioc_operational(ioc, CAN_SLEEP);
3336         if (r)
3337                 goto out_free_resources;
3338
3339         mpt2sas_base_start_watchdog(ioc);
3340         return 0;
3341
3342  out_free_resources:
3343
3344         ioc->remove_host = 1;
3345         mpt2sas_base_free_resources(ioc);
3346         _base_release_memory_pools(ioc);
3347         pci_set_drvdata(ioc->pdev, NULL);
3348         kfree(ioc->tm_cmds.reply);
3349         kfree(ioc->transport_cmds.reply);
3350         kfree(ioc->config_cmds.reply);
3351         kfree(ioc->base_cmds.reply);
3352         kfree(ioc->ctl_cmds.reply);
3353         kfree(ioc->pfacts);
3354         ioc->ctl_cmds.reply = NULL;
3355         ioc->base_cmds.reply = NULL;
3356         ioc->tm_cmds.reply = NULL;
3357         ioc->transport_cmds.reply = NULL;
3358         ioc->config_cmds.reply = NULL;
3359         ioc->pfacts = NULL;
3360         return r;
3361 }
3362
3363
3364 /**
3365  * mpt2sas_base_detach - remove controller instance
3366  * @ioc: per adapter object
3367  *
3368  * Return nothing.
3369  */
3370 void
3371 mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc)
3372 {
3373
3374         dexitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
3375             __func__));
3376
3377         mpt2sas_base_stop_watchdog(ioc);
3378         mpt2sas_base_free_resources(ioc);
3379         _base_release_memory_pools(ioc);
3380         pci_set_drvdata(ioc->pdev, NULL);
3381         kfree(ioc->pfacts);
3382         kfree(ioc->ctl_cmds.reply);
3383         kfree(ioc->base_cmds.reply);
3384         kfree(ioc->tm_cmds.reply);
3385         kfree(ioc->transport_cmds.reply);
3386         kfree(ioc->config_cmds.reply);
3387 }
3388
3389 /**
3390  * _base_reset_handler - reset callback handler (for base)
3391  * @ioc: per adapter object
3392  * @reset_phase: phase
3393  *
3394  * The handler for doing any required cleanup or initialization.
3395  *
3396  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
3397  * MPT2_IOC_DONE_RESET
3398  *
3399  * Return nothing.
3400  */
3401 static void
3402 _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
3403 {
3404         switch (reset_phase) {
3405         case MPT2_IOC_PRE_RESET:
3406                 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
3407                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
3408                 break;
3409         case MPT2_IOC_AFTER_RESET:
3410                 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
3411                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
3412                 if (ioc->transport_cmds.status & MPT2_CMD_PENDING) {
3413                         ioc->transport_cmds.status |= MPT2_CMD_RESET;
3414                         mpt2sas_base_free_smid(ioc, ioc->transport_cmds.smid);
3415                         complete(&ioc->transport_cmds.done);
3416                 }
3417                 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
3418                         ioc->base_cmds.status |= MPT2_CMD_RESET;
3419                         mpt2sas_base_free_smid(ioc, ioc->base_cmds.smid);
3420                         complete(&ioc->base_cmds.done);
3421                 }
3422                 if (ioc->config_cmds.status & MPT2_CMD_PENDING) {
3423                         ioc->config_cmds.status |= MPT2_CMD_RESET;
3424                         mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid);
3425                         ioc->config_cmds.smid = USHORT_MAX;
3426                         complete(&ioc->config_cmds.done);
3427                 }
3428                 break;
3429         case MPT2_IOC_DONE_RESET:
3430                 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
3431                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
3432                 break;
3433         }
3434         mpt2sas_scsih_reset_handler(ioc, reset_phase);
3435         mpt2sas_ctl_reset_handler(ioc, reset_phase);
3436 }
3437
3438 /**
3439  * _wait_for_commands_to_complete - reset controller
3440  * @ioc: Pointer to MPT_ADAPTER structure
3441  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3442  *
3443  * This function waiting(3s) for all pending commands to complete
3444  * prior to putting controller in reset.
3445  */
3446 static void
3447 _wait_for_commands_to_complete(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3448 {
3449         u32 ioc_state;
3450         unsigned long flags;
3451         u16 i;
3452
3453         ioc->pending_io_count = 0;
3454         if (sleep_flag != CAN_SLEEP)
3455                 return;
3456
3457         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
3458         if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
3459                 return;
3460
3461         /* pending command count */
3462         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3463         for (i = 0; i < ioc->request_depth; i++)
3464                 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
3465                         ioc->pending_io_count++;
3466         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3467
3468         if (!ioc->pending_io_count)
3469                 return;
3470
3471         /* wait for pending commands to complete */
3472         wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 3 * HZ);
3473 }
3474
3475 /**
3476  * mpt2sas_base_hard_reset_handler - reset controller
3477  * @ioc: Pointer to MPT_ADAPTER structure
3478  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3479  * @type: FORCE_BIG_HAMMER or SOFT_RESET
3480  *
3481  * Returns 0 for success, non-zero for failure.
3482  */
3483 int
3484 mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
3485     enum reset_type type)
3486 {
3487         int r;
3488         unsigned long flags;
3489
3490         dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
3491             __func__));
3492
3493         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
3494         if (ioc->shost_recovery) {
3495                 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
3496                 printk(MPT2SAS_ERR_FMT "%s: busy\n",
3497                     ioc->name, __func__);
3498                 return -EBUSY;
3499         }
3500         ioc->shost_recovery = 1;
3501         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
3502
3503         _base_reset_handler(ioc, MPT2_IOC_PRE_RESET);
3504         _wait_for_commands_to_complete(ioc, sleep_flag);
3505         _base_mask_interrupts(ioc);
3506         r = _base_make_ioc_ready(ioc, sleep_flag, type);
3507         if (r)
3508                 goto out;
3509         _base_reset_handler(ioc, MPT2_IOC_AFTER_RESET);
3510         r = _base_make_ioc_operational(ioc, sleep_flag);
3511         if (!r)
3512                 _base_reset_handler(ioc, MPT2_IOC_DONE_RESET);
3513  out:
3514         dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: %s\n",
3515             ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
3516
3517         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
3518         ioc->shost_recovery = 0;
3519         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
3520
3521         if (!r)
3522                 _base_reset_handler(ioc, MPT2_IOC_RUNNING);
3523         return r;
3524 }