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) 2007-2014  LSI Corporation
   7  * Copyright (C) 20013-2014 Avago Technologies
   8  *  (mailto: MPT-FusionLinux.pdl@avagotech.com)
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * NO WARRANTY
  21  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  22  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  23  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  24  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  25  * solely responsible for determining the appropriateness of using and
  26  * distributing the Program and assumes all risks associated with its
  27  * exercise of rights under this Agreement, including but not limited to
  28  * the risks and costs of program errors, damage to or loss of data,
  29  * programs or equipment, and unavailability or interruption of operations.
  30
  31  * DISCLAIMER OF LIABILITY
  32  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  33  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  35  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  36  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  37  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  38  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  39
  40  * You should have received a copy of the GNU General Public License
  41  * along with this program; if not, write to the Free Software
  42  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  43  * USA.
  44  */
  45
  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 #include <linux/time.h>
  61 #include <linux/kthread.h>
  62 #include <linux/aer.h>
  63
  64 #include "mpt2sas_base.h"
  65
  66 static MPT_CALLBACK     mpt_callbacks[MPT_MAX_CALLBACKS];
  67
  68 #define FAULT_POLLING_INTERVAL 1000 /* in milliseconds */
  69
  70 #define MAX_HBA_QUEUE_DEPTH     30000
  71 #define MAX_CHAIN_DEPTH         100000
  72 static int max_queue_depth = -1;
  73 module_param(max_queue_depth, int, 0);
  74 MODULE_PARM_DESC(max_queue_depth, " max controller queue depth ");
  75
  76 static int max_sgl_entries = -1;
  77 module_param(max_sgl_entries, int, 0);
  78 MODULE_PARM_DESC(max_sgl_entries, " max sg entries ");
  79
  80 static int msix_disable = -1;
  81 module_param(msix_disable, int, 0);
  82 MODULE_PARM_DESC(msix_disable, " disable msix routed interrupts (default=0)");
  83
  84 static int max_msix_vectors = -1;
  85 module_param(max_msix_vectors, int, 0);
  86 MODULE_PARM_DESC(max_msix_vectors, " max msix vectors ");
  87
  88 static int mpt2sas_fwfault_debug;
  89 MODULE_PARM_DESC(mpt2sas_fwfault_debug, " enable detection of firmware fault "
  90         "and halt firmware - (default=0)");
  91
  92 static int disable_discovery = -1;
  93 module_param(disable_discovery, int, 0);
  94 MODULE_PARM_DESC(disable_discovery, " disable discovery ");
  95
  96 static int
  97 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag);
  98
  99 static int
 100 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag);
 101
 102 /**
 103  * _scsih_set_fwfault_debug - global setting of ioc->fwfault_debug.
 104  *
 105  */
 106 static int
 107 _scsih_set_fwfault_debug(const char *val, struct kernel_param *kp)
 108 {
 109         int ret = param_set_int(val, kp);
 110         struct MPT2SAS_ADAPTER *ioc;
 111
 112         if (ret)
 113                 return ret;
 114
 115         printk(KERN_INFO "setting fwfault_debug(%d)\n", mpt2sas_fwfault_debug);
 116         list_for_each_entry(ioc, &mpt2sas_ioc_list, list)
 117                 ioc->fwfault_debug = mpt2sas_fwfault_debug;
 118         return 0;
 119 }
 120
 121 module_param_call(mpt2sas_fwfault_debug, _scsih_set_fwfault_debug,
 122     param_get_int, &mpt2sas_fwfault_debug, 0644);
 123
 124 /**
 125  *  mpt2sas_remove_dead_ioc_func - kthread context to remove dead ioc
 126  * @arg: input argument, used to derive ioc
 127  *
 128  * Return 0 if controller is removed from pci subsystem.
 129  * Return -1 for other case.
 130  */
 131 static int mpt2sas_remove_dead_ioc_func(void *arg)
 132 {
 133                 struct MPT2SAS_ADAPTER *ioc = (struct MPT2SAS_ADAPTER *)arg;
 134                 struct pci_dev *pdev;
 135
 136                 if ((ioc == NULL))
 137                         return -1;
 138
 139                 pdev = ioc->pdev;
 140                 if ((pdev == NULL))
 141                         return -1;
 142                 pci_stop_and_remove_bus_device_locked(pdev);
 143                 return 0;
 144 }
 145
 146
 147 /**
 148  * _base_fault_reset_work - workq handling ioc fault conditions
 149  * @work: input argument, used to derive ioc
 150  * Context: sleep.
 151  *
 152  * Return nothing.
 153  */
 154 static void
 155 _base_fault_reset_work(struct work_struct *work)
 156 {
 157         struct MPT2SAS_ADAPTER *ioc =
 158             container_of(work, struct MPT2SAS_ADAPTER, fault_reset_work.work);
 159         unsigned long    flags;
 160         u32 doorbell;
 161         int rc;
 162         struct task_struct *p;
 163
 164         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 165         if (ioc->shost_recovery || ioc->pci_error_recovery)
 166                 goto rearm_timer;
 167         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 168
 169         doorbell = mpt2sas_base_get_iocstate(ioc, 0);
 170         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_MASK) {
 171                 printk(MPT2SAS_INFO_FMT "%s : SAS host is non-operational !!!!\n",
 172                         ioc->name, __func__);
 173
 174                 /* It may be possible that EEH recovery can resolve some of
 175                  * pci bus failure issues rather removing the dead ioc function
 176                  * by considering controller is in a non-operational state. So
 177                  * here priority is given to the EEH recovery. If it doesn't
 178                  * not resolve this issue, mpt2sas driver will consider this
 179                  * controller to non-operational state and remove the dead ioc
 180                  * function.
 181                  */
 182                 if (ioc->non_operational_loop++ < 5) {
 183                         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock,
 184                                                          flags);
 185                         goto rearm_timer;
 186                 }
 187
 188                 /*
 189                  * Call _scsih_flush_pending_cmds callback so that we flush all
 190                  * pending commands back to OS. This call is required to aovid
 191                  * deadlock at block layer. Dead IOC will fail to do diag reset,
 192                  * and this call is safe since dead ioc will never return any
 193                  * command back from HW.
 194                  */
 195                 ioc->schedule_dead_ioc_flush_running_cmds(ioc);
 196                 /*
 197                  * Set remove_host flag early since kernel thread will
 198                  * take some time to execute.
 199                  */
 200                 ioc->remove_host = 1;
 201                 /*Remove the Dead Host */
 202                 p = kthread_run(mpt2sas_remove_dead_ioc_func, ioc,
 203                     "mpt2sas_dead_ioc_%d", ioc->id);
 204                 if (IS_ERR(p)) {
 205                         printk(MPT2SAS_ERR_FMT
 206                         "%s: Running mpt2sas_dead_ioc thread failed !!!!\n",
 207                         ioc->name, __func__);
 208                 } else {
 209                     printk(MPT2SAS_ERR_FMT
 210                         "%s: Running mpt2sas_dead_ioc thread success !!!!\n",
 211                         ioc->name, __func__);
 212                 }
 213
 214                 return; /* don't rearm timer */
 215         }
 216
 217         ioc->non_operational_loop = 0;
 218
 219         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
 220                 rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
 221                     FORCE_BIG_HAMMER);
 222                 printk(MPT2SAS_WARN_FMT "%s: hard reset: %s\n", ioc->name,
 223                     __func__, (rc == 0) ? "success" : "failed");
 224                 doorbell = mpt2sas_base_get_iocstate(ioc, 0);
 225                 if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
 226                         mpt2sas_base_fault_info(ioc, doorbell &
 227                             MPI2_DOORBELL_DATA_MASK);
 228         }
 229
 230         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 231  rearm_timer:
 232         if (ioc->fault_reset_work_q)
 233                 queue_delayed_work(ioc->fault_reset_work_q,
 234                     &ioc->fault_reset_work,
 235                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
 236         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 237 }
 238
 239 /**
 240  * mpt2sas_base_start_watchdog - start the fault_reset_work_q
 241  * @ioc: per adapter object
 242  * Context: sleep.
 243  *
 244  * Return nothing.
 245  */
 246 void
 247 mpt2sas_base_start_watchdog(struct MPT2SAS_ADAPTER *ioc)
 248 {
 249         unsigned long    flags;
 250
 251         if (ioc->fault_reset_work_q)
 252                 return;
 253
 254         /* initialize fault polling */
 255         INIT_DELAYED_WORK(&ioc->fault_reset_work, _base_fault_reset_work);
 256         snprintf(ioc->fault_reset_work_q_name,
 257             sizeof(ioc->fault_reset_work_q_name), "poll_%d_status", ioc->id);
 258         ioc->fault_reset_work_q =
 259                 create_singlethread_workqueue(ioc->fault_reset_work_q_name);
 260         if (!ioc->fault_reset_work_q) {
 261                 printk(MPT2SAS_ERR_FMT "%s: failed (line=%d)\n",
 262                     ioc->name, __func__, __LINE__);
 263                         return;
 264         }
 265         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 266         if (ioc->fault_reset_work_q)
 267                 queue_delayed_work(ioc->fault_reset_work_q,
 268                     &ioc->fault_reset_work,
 269                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
 270         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 271 }
 272
 273 /**
 274  * mpt2sas_base_stop_watchdog - stop the fault_reset_work_q
 275  * @ioc: per adapter object
 276  * Context: sleep.
 277  *
 278  * Return nothing.
 279  */
 280 void
 281 mpt2sas_base_stop_watchdog(struct MPT2SAS_ADAPTER *ioc)
 282 {
 283         unsigned long    flags;
 284         struct workqueue_struct *wq;
 285
 286         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 287         wq = ioc->fault_reset_work_q;
 288         ioc->fault_reset_work_q = NULL;
 289         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 290         if (wq) {
 291                 if (!cancel_delayed_work_sync(&ioc->fault_reset_work))
 292                         flush_workqueue(wq);
 293                 destroy_workqueue(wq);
 294         }
 295 }
 296
 297 /**
 298  * mpt2sas_base_fault_info - verbose translation of firmware FAULT code
 299  * @ioc: per adapter object
 300  * @fault_code: fault code
 301  *
 302  * Return nothing.
 303  */
 304 void
 305 mpt2sas_base_fault_info(struct MPT2SAS_ADAPTER *ioc , u16 fault_code)
 306 {
 307         printk(MPT2SAS_ERR_FMT "fault_state(0x%04x)!\n",
 308             ioc->name, fault_code);
 309 }
 310
 311 /**
 312  * mpt2sas_halt_firmware - halt's mpt controller firmware
 313  * @ioc: per adapter object
 314  *
 315  * For debugging timeout related issues.  Writing 0xCOFFEE00
 316  * to the doorbell register will halt controller firmware. With
 317  * the purpose to stop both driver and firmware, the enduser can
 318  * obtain a ring buffer from controller UART.
 319  */
 320 void
 321 mpt2sas_halt_firmware(struct MPT2SAS_ADAPTER *ioc)
 322 {
 323         u32 doorbell;
 324
 325         if (!ioc->fwfault_debug)
 326                 return;
 327
 328         dump_stack();
 329
 330         doorbell = readl(&ioc->chip->Doorbell);
 331         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
 332                 mpt2sas_base_fault_info(ioc , doorbell);
 333         else {
 334                 writel(0xC0FFEE00, &ioc->chip->Doorbell);
 335                 printk(MPT2SAS_ERR_FMT "Firmware is halted due to command "
 336                     "timeout\n", ioc->name);
 337         }
 338
 339         panic("panic in %s\n", __func__);
 340 }
 341
 342 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 343 /**
 344  * _base_sas_ioc_info - verbose translation of the ioc status
 345  * @ioc: per adapter object
 346  * @mpi_reply: reply mf payload returned from firmware
 347  * @request_hdr: request mf
 348  *
 349  * Return nothing.
 350  */
 351 static void
 352 _base_sas_ioc_info(struct MPT2SAS_ADAPTER *ioc, MPI2DefaultReply_t *mpi_reply,
 353      MPI2RequestHeader_t *request_hdr)
 354 {
 355         u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
 356             MPI2_IOCSTATUS_MASK;
 357         char *desc = NULL;
 358         u16 frame_sz;
 359         char *func_str = NULL;
 360
 361         /* SCSI_IO, RAID_PASS are handled from _scsih_scsi_ioc_info */
 362         if (request_hdr->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 363             request_hdr->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
 364             request_hdr->Function == MPI2_FUNCTION_EVENT_NOTIFICATION)
 365                 return;
 366
 367         if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
 368                 return;
 369
 370         switch (ioc_status) {
 371
 372 /****************************************************************************
 373 *  Common IOCStatus values for all replies
 374 ****************************************************************************/
 375
 376         case MPI2_IOCSTATUS_INVALID_FUNCTION:
 377                 desc = "invalid function";
 378                 break;
 379         case MPI2_IOCSTATUS_BUSY:
 380                 desc = "busy";
 381                 break;
 382         case MPI2_IOCSTATUS_INVALID_SGL:
 383                 desc = "invalid sgl";
 384                 break;
 385         case MPI2_IOCSTATUS_INTERNAL_ERROR:
 386                 desc = "internal error";
 387                 break;
 388         case MPI2_IOCSTATUS_INVALID_VPID:
 389                 desc = "invalid vpid";
 390                 break;
 391         case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
 392                 desc = "insufficient resources";
 393                 break;
 394         case MPI2_IOCSTATUS_INVALID_FIELD:
 395                 desc = "invalid field";
 396                 break;
 397         case MPI2_IOCSTATUS_INVALID_STATE:
 398                 desc = "invalid state";
 399                 break;
 400         case MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED:
 401                 desc = "op state not supported";
 402                 break;
 403
 404 /****************************************************************************
 405 *  Config IOCStatus values
 406 ****************************************************************************/
 407
 408         case MPI2_IOCSTATUS_CONFIG_INVALID_ACTION:
 409                 desc = "config invalid action";
 410                 break;
 411         case MPI2_IOCSTATUS_CONFIG_INVALID_TYPE:
 412                 desc = "config invalid type";
 413                 break;
 414         case MPI2_IOCSTATUS_CONFIG_INVALID_PAGE:
 415                 desc = "config invalid page";
 416                 break;
 417         case MPI2_IOCSTATUS_CONFIG_INVALID_DATA:
 418                 desc = "config invalid data";
 419                 break;
 420         case MPI2_IOCSTATUS_CONFIG_NO_DEFAULTS:
 421                 desc = "config no defaults";
 422                 break;
 423         case MPI2_IOCSTATUS_CONFIG_CANT_COMMIT:
 424                 desc = "config cant commit";
 425                 break;
 426
 427 /****************************************************************************
 428 *  SCSI IO Reply
 429 ****************************************************************************/
 430
 431         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
 432         case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
 433         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
 434         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
 435         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
 436         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
 437         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
 438         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
 439         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
 440         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
 441         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
 442         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
 443                 break;
 444
 445 /****************************************************************************
 446 *  For use by SCSI Initiator and SCSI Target end-to-end data protection
 447 ****************************************************************************/
 448
 449         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
 450                 desc = "eedp guard error";
 451                 break;
 452         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
 453                 desc = "eedp ref tag error";
 454                 break;
 455         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
 456                 desc = "eedp app tag error";
 457                 break;
 458
 459 /****************************************************************************
 460 *  SCSI Target values
 461 ****************************************************************************/
 462
 463         case MPI2_IOCSTATUS_TARGET_INVALID_IO_INDEX:
 464                 desc = "target invalid io index";
 465                 break;
 466         case MPI2_IOCSTATUS_TARGET_ABORTED:
 467                 desc = "target aborted";
 468                 break;
 469         case MPI2_IOCSTATUS_TARGET_NO_CONN_RETRYABLE:
 470                 desc = "target no conn retryable";
 471                 break;
 472         case MPI2_IOCSTATUS_TARGET_NO_CONNECTION:
 473                 desc = "target no connection";
 474                 break;
 475         case MPI2_IOCSTATUS_TARGET_XFER_COUNT_MISMATCH:
 476                 desc = "target xfer count mismatch";
 477                 break;
 478         case MPI2_IOCSTATUS_TARGET_DATA_OFFSET_ERROR:
 479                 desc = "target data offset error";
 480                 break;
 481         case MPI2_IOCSTATUS_TARGET_TOO_MUCH_WRITE_DATA:
 482                 desc = "target too much write data";
 483                 break;
 484         case MPI2_IOCSTATUS_TARGET_IU_TOO_SHORT:
 485                 desc = "target iu too short";
 486                 break;
 487         case MPI2_IOCSTATUS_TARGET_ACK_NAK_TIMEOUT:
 488                 desc = "target ack nak timeout";
 489                 break;
 490         case MPI2_IOCSTATUS_TARGET_NAK_RECEIVED:
 491                 desc = "target nak received";
 492                 break;
 493
 494 /****************************************************************************
 495 *  Serial Attached SCSI values
 496 ****************************************************************************/
 497
 498         case MPI2_IOCSTATUS_SAS_SMP_REQUEST_FAILED:
 499                 desc = "smp request failed";
 500                 break;
 501         case MPI2_IOCSTATUS_SAS_SMP_DATA_OVERRUN:
 502                 desc = "smp data overrun";
 503                 break;
 504
 505 /****************************************************************************
 506 *  Diagnostic Buffer Post / Diagnostic Release values
 507 ****************************************************************************/
 508
 509         case MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED:
 510                 desc = "diagnostic released";
 511                 break;
 512         default:
 513                 break;
 514         }
 515
 516         if (!desc)
 517                 return;
 518
 519         switch (request_hdr->Function) {
 520         case MPI2_FUNCTION_CONFIG:
 521                 frame_sz = sizeof(Mpi2ConfigRequest_t) + ioc->sge_size;
 522                 func_str = "config_page";
 523                 break;
 524         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 525                 frame_sz = sizeof(Mpi2SCSITaskManagementRequest_t);
 526                 func_str = "task_mgmt";
 527                 break;
 528         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 529                 frame_sz = sizeof(Mpi2SasIoUnitControlRequest_t);
 530                 func_str = "sas_iounit_ctl";
 531                 break;
 532         case MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR:
 533                 frame_sz = sizeof(Mpi2SepRequest_t);
 534                 func_str = "enclosure";
 535                 break;
 536         case MPI2_FUNCTION_IOC_INIT:
 537                 frame_sz = sizeof(Mpi2IOCInitRequest_t);
 538                 func_str = "ioc_init";
 539                 break;
 540         case MPI2_FUNCTION_PORT_ENABLE:
 541                 frame_sz = sizeof(Mpi2PortEnableRequest_t);
 542                 func_str = "port_enable";
 543                 break;
 544         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 545                 frame_sz = sizeof(Mpi2SmpPassthroughRequest_t) + ioc->sge_size;
 546                 func_str = "smp_passthru";
 547                 break;
 548         default:
 549                 frame_sz = 32;
 550                 func_str = "unknown";
 551                 break;
 552         }
 553
 554         printk(MPT2SAS_WARN_FMT "ioc_status: %s(0x%04x), request(0x%p),"
 555             " (%s)\n", ioc->name, desc, ioc_status, request_hdr, func_str);
 556
 557         _debug_dump_mf(request_hdr, frame_sz/4);
 558 }
 559
 560 /**
 561  * _base_display_event_data - verbose translation of firmware asyn events
 562  * @ioc: per adapter object
 563  * @mpi_reply: reply mf payload returned from firmware
 564  *
 565  * Return nothing.
 566  */
 567 static void
 568 _base_display_event_data(struct MPT2SAS_ADAPTER *ioc,
 569     Mpi2EventNotificationReply_t *mpi_reply)
 570 {
 571         char *desc = NULL;
 572         u16 event;
 573
 574         if (!(ioc->logging_level & MPT_DEBUG_EVENTS))
 575                 return;
 576
 577         event = le16_to_cpu(mpi_reply->Event);
 578
 579         switch (event) {
 580         case MPI2_EVENT_LOG_DATA:
 581                 desc = "Log Data";
 582                 break;
 583         case MPI2_EVENT_STATE_CHANGE:
 584                 desc = "Status Change";
 585                 break;
 586         case MPI2_EVENT_HARD_RESET_RECEIVED:
 587                 desc = "Hard Reset Received";
 588                 break;
 589         case MPI2_EVENT_EVENT_CHANGE:
 590                 desc = "Event Change";
 591                 break;
 592         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
 593                 desc = "Device Status Change";
 594                 break;
 595         case MPI2_EVENT_IR_OPERATION_STATUS:
 596                 if (!ioc->hide_ir_msg)
 597                         desc = "IR Operation Status";
 598                 break;
 599         case MPI2_EVENT_SAS_DISCOVERY:
 600         {
 601                 Mpi2EventDataSasDiscovery_t *event_data =
 602                     (Mpi2EventDataSasDiscovery_t *)mpi_reply->EventData;
 603                 printk(MPT2SAS_INFO_FMT "Discovery: (%s)", ioc->name,
 604                     (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
 605                     "start" : "stop");
 606                 if (event_data->DiscoveryStatus)
 607                         printk("discovery_status(0x%08x)",
 608                             le32_to_cpu(event_data->DiscoveryStatus));
 609                 printk("\n");
 610                 return;
 611         }
 612         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
 613                 desc = "SAS Broadcast Primitive";
 614                 break;
 615         case MPI2_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE:
 616                 desc = "SAS Init Device Status Change";
 617                 break;
 618         case MPI2_EVENT_SAS_INIT_TABLE_OVERFLOW:
 619                 desc = "SAS Init Table Overflow";
 620                 break;
 621         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
 622                 desc = "SAS Topology Change List";
 623                 break;
 624         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
 625                 desc = "SAS Enclosure Device Status Change";
 626                 break;
 627         case MPI2_EVENT_IR_VOLUME:
 628                 if (!ioc->hide_ir_msg)
 629                         desc = "IR Volume";
 630                 break;
 631         case MPI2_EVENT_IR_PHYSICAL_DISK:
 632                 if (!ioc->hide_ir_msg)
 633                         desc = "IR Physical Disk";
 634                 break;
 635         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
 636                 if (!ioc->hide_ir_msg)
 637                         desc = "IR Configuration Change List";
 638                 break;
 639         case MPI2_EVENT_LOG_ENTRY_ADDED:
 640                 if (!ioc->hide_ir_msg)
 641                         desc = "Log Entry Added";
 642                 break;
 643         case MPI2_EVENT_TEMP_THRESHOLD:
 644                 desc = "Temperature Threshold";
 645                 break;
 646         }
 647
 648         if (!desc)
 649                 return;
 650
 651         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, desc);
 652 }
 653 #endif
 654
 655 /**
 656  * _base_sas_log_info - verbose translation of firmware log info
 657  * @ioc: per adapter object
 658  * @log_info: log info
 659  *
 660  * Return nothing.
 661  */
 662 static void
 663 _base_sas_log_info(struct MPT2SAS_ADAPTER *ioc , u32 log_info)
 664 {
 665         union loginfo_type {
 666                 u32     loginfo;
 667                 struct {
 668                         u32     subcode:16;
 669                         u32     code:8;
 670                         u32     originator:4;
 671                         u32     bus_type:4;
 672                 } dw;
 673         };
 674         union loginfo_type sas_loginfo;
 675         char *originator_str = NULL;
 676
 677         sas_loginfo.loginfo = log_info;
 678         if (sas_loginfo.dw.bus_type != 3 /*SAS*/)
 679                 return;
 680
 681         /* each nexus loss loginfo */
 682         if (log_info == 0x31170000)
 683                 return;
 684
 685         /* eat the loginfos associated with task aborts */
 686         if (ioc->ignore_loginfos && (log_info == 0x30050000 || log_info ==
 687             0x31140000 || log_info == 0x31130000))
 688                 return;
 689
 690         switch (sas_loginfo.dw.originator) {
 691         case 0:
 692                 originator_str = "IOP";
 693                 break;
 694         case 1:
 695                 originator_str = "PL";
 696                 break;
 697         case 2:
 698                 if (!ioc->hide_ir_msg)
 699                         originator_str = "IR";
 700                 else
 701                         originator_str = "WarpDrive";
 702                 break;
 703         }
 704
 705         printk(MPT2SAS_WARN_FMT "log_info(0x%08x): originator(%s), "
 706             "code(0x%02x), sub_code(0x%04x)\n", ioc->name, log_info,
 707              originator_str, sas_loginfo.dw.code,
 708              sas_loginfo.dw.subcode);
 709 }
 710
 711 /**
 712  * _base_display_reply_info -
 713  * @ioc: per adapter object
 714  * @smid: system request message index
 715  * @msix_index: MSIX table index supplied by the OS
 716  * @reply: reply message frame(lower 32bit addr)
 717  *
 718  * Return nothing.
 719  */
 720 static void
 721 _base_display_reply_info(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 722     u32 reply)
 723 {
 724         MPI2DefaultReply_t *mpi_reply;
 725         u16 ioc_status;
 726
 727         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 728         if (unlikely(!mpi_reply)) {
 729                 printk(MPT2SAS_ERR_FMT "mpi_reply not valid at %s:%d/%s()!\n",
 730                         ioc->name, __FILE__, __LINE__, __func__);
 731                 return;
 732         }
 733         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
 734 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 735         if ((ioc_status & MPI2_IOCSTATUS_MASK) &&
 736             (ioc->logging_level & MPT_DEBUG_REPLY)) {
 737                 _base_sas_ioc_info(ioc , mpi_reply,
 738                    mpt2sas_base_get_msg_frame(ioc, smid));
 739         }
 740 #endif
 741         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
 742                 _base_sas_log_info(ioc, le32_to_cpu(mpi_reply->IOCLogInfo));
 743 }
 744
 745 /**
 746  * mpt2sas_base_done - base internal command completion routine
 747  * @ioc: per adapter object
 748  * @smid: system request message index
 749  * @msix_index: MSIX table index supplied by the OS
 750  * @reply: reply message frame(lower 32bit addr)
 751  *
 752  * Return 1 meaning mf should be freed from _base_interrupt
 753  *        0 means the mf is freed from this function.
 754  */
 755 u8
 756 mpt2sas_base_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 757     u32 reply)
 758 {
 759         MPI2DefaultReply_t *mpi_reply;
 760
 761         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 762         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
 763                 return 1;
 764
 765         if (ioc->base_cmds.status == MPT2_CMD_NOT_USED)
 766                 return 1;
 767
 768         ioc->base_cmds.status |= MPT2_CMD_COMPLETE;
 769         if (mpi_reply) {
 770                 ioc->base_cmds.status |= MPT2_CMD_REPLY_VALID;
 771                 memcpy(ioc->base_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 772         }
 773         ioc->base_cmds.status &= ~MPT2_CMD_PENDING;
 774
 775         complete(&ioc->base_cmds.done);
 776         return 1;
 777 }
 778
 779 /**
 780  * _base_async_event - main callback handler for firmware asyn events
 781  * @ioc: per adapter object
 782  * @msix_index: MSIX table index supplied by the OS
 783  * @reply: reply message frame(lower 32bit addr)
 784  *
 785  * Returns void.
 786  */
 787 static void
 788 _base_async_event(struct MPT2SAS_ADAPTER *ioc, u8 msix_index, u32 reply)
 789 {
 790         Mpi2EventNotificationReply_t *mpi_reply;
 791         Mpi2EventAckRequest_t *ack_request;
 792         u16 smid;
 793
 794         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 795         if (!mpi_reply)
 796                 return;
 797         if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION)
 798                 return;
 799 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 800         _base_display_event_data(ioc, mpi_reply);
 801 #endif
 802         if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED))
 803                 goto out;
 804         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
 805         if (!smid) {
 806                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
 807                     ioc->name, __func__);
 808                 goto out;
 809         }
 810
 811         ack_request = mpt2sas_base_get_msg_frame(ioc, smid);
 812         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
 813         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
 814         ack_request->Event = mpi_reply->Event;
 815         ack_request->EventContext = mpi_reply->EventContext;
 816         ack_request->VF_ID = 0;  /* TODO */
 817         ack_request->VP_ID = 0;
 818         mpt2sas_base_put_smid_default(ioc, smid);
 819
 820  out:
 821
 822         /* scsih callback handler */
 823         mpt2sas_scsih_event_callback(ioc, msix_index, reply);
 824
 825         /* ctl callback handler */
 826         mpt2sas_ctl_event_callback(ioc, msix_index, reply);
 827
 828         return;
 829 }
 830
 831 /**
 832  * _base_get_cb_idx - obtain the callback index
 833  * @ioc: per adapter object
 834  * @smid: system request message index
 835  *
 836  * Return callback index.
 837  */
 838 static u8
 839 _base_get_cb_idx(struct MPT2SAS_ADAPTER *ioc, u16 smid)
 840 {
 841         int i;
 842         u8 cb_idx;
 843
 844         if (smid < ioc->hi_priority_smid) {
 845                 i = smid - 1;
 846                 cb_idx = ioc->scsi_lookup[i].cb_idx;
 847         } else if (smid < ioc->internal_smid) {
 848                 i = smid - ioc->hi_priority_smid;
 849                 cb_idx = ioc->hpr_lookup[i].cb_idx;
 850         } else if (smid <= ioc->hba_queue_depth) {
 851                 i = smid - ioc->internal_smid;
 852                 cb_idx = ioc->internal_lookup[i].cb_idx;
 853         } else
 854                 cb_idx = 0xFF;
 855         return cb_idx;
 856 }
 857
 858 /**
 859  * _base_mask_interrupts - disable interrupts
 860  * @ioc: per adapter object
 861  *
 862  * Disabling ResetIRQ, Reply and Doorbell Interrupts
 863  *
 864  * Return nothing.
 865  */
 866 static void
 867 _base_mask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 868 {
 869         u32 him_register;
 870
 871         ioc->mask_interrupts = 1;
 872         him_register = readl(&ioc->chip->HostInterruptMask);
 873         him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK;
 874         writel(him_register, &ioc->chip->HostInterruptMask);
 875         readl(&ioc->chip->HostInterruptMask);
 876 }
 877
 878 /**
 879  * _base_unmask_interrupts - enable interrupts
 880  * @ioc: per adapter object
 881  *
 882  * Enabling only Reply Interrupts
 883  *
 884  * Return nothing.
 885  */
 886 static void
 887 _base_unmask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 888 {
 889         u32 him_register;
 890
 891         him_register = readl(&ioc->chip->HostInterruptMask);
 892         him_register &= ~MPI2_HIM_RIM;
 893         writel(him_register, &ioc->chip->HostInterruptMask);
 894         ioc->mask_interrupts = 0;
 895 }
 896
 897 union reply_descriptor {
 898         u64 word;
 899         struct {
 900                 u32 low;
 901                 u32 high;
 902         } u;
 903 };
 904
 905 /**
 906  * _base_interrupt - MPT adapter (IOC) specific interrupt handler.
 907  * @irq: irq number (not used)
 908  * @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure
 909  * @r: pt_regs pointer (not used)
 910  *
 911  * Return IRQ_HANDLE if processed, else IRQ_NONE.
 912  */
 913 static irqreturn_t
 914 _base_interrupt(int irq, void *bus_id)
 915 {
 916         struct adapter_reply_queue *reply_q = bus_id;
 917         union reply_descriptor rd;
 918         u32 completed_cmds;
 919         u8 request_desript_type;
 920         u16 smid;
 921         u8 cb_idx;
 922         u32 reply;
 923         u8 msix_index = reply_q->msix_index;
 924         struct MPT2SAS_ADAPTER *ioc = reply_q->ioc;
 925         Mpi2ReplyDescriptorsUnion_t *rpf;
 926         u8 rc;
 927
 928         if (ioc->mask_interrupts)
 929                 return IRQ_NONE;
 930
 931         if (!atomic_add_unless(&reply_q->busy, 1, 1))
 932                 return IRQ_NONE;
 933
 934         rpf = &reply_q->reply_post_free[reply_q->reply_post_host_index];
 935         request_desript_type = rpf->Default.ReplyFlags
 936              & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 937         if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) {
 938                 atomic_dec(&reply_q->busy);
 939                 return IRQ_NONE;
 940         }
 941
 942         completed_cmds = 0;
 943         cb_idx = 0xFF;
 944         do {
 945                 rd.word = le64_to_cpu(rpf->Words);
 946                 if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX)
 947                         goto out;
 948                 reply = 0;
 949                 smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1);
 950                 if (request_desript_type ==
 951                     MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
 952                         reply = le32_to_cpu
 953                                 (rpf->AddressReply.ReplyFrameAddress);
 954                         if (reply > ioc->reply_dma_max_address ||
 955                             reply < ioc->reply_dma_min_address)
 956                                 reply = 0;
 957                 } else if (request_desript_type ==
 958                     MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER)
 959                         goto next;
 960                 else if (request_desript_type ==
 961                     MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS)
 962                         goto next;
 963                 if (smid) {
 964                         cb_idx = _base_get_cb_idx(ioc, smid);
 965                 if ((likely(cb_idx < MPT_MAX_CALLBACKS))
 966                             && (likely(mpt_callbacks[cb_idx] != NULL))) {
 967                                 rc = mpt_callbacks[cb_idx](ioc, smid,
 968                                     msix_index, reply);
 969                         if (reply)
 970                                 _base_display_reply_info(ioc, smid,
 971                                     msix_index, reply);
 972                         if (rc)
 973                                 mpt2sas_base_free_smid(ioc, smid);
 974                         }
 975                 }
 976                 if (!smid)
 977                         _base_async_event(ioc, msix_index, reply);
 978
 979                 /* reply free queue handling */
 980                 if (reply) {
 981                         ioc->reply_free_host_index =
 982                             (ioc->reply_free_host_index ==
 983                             (ioc->reply_free_queue_depth - 1)) ?
 984                             0 : ioc->reply_free_host_index + 1;
 985                         ioc->reply_free[ioc->reply_free_host_index] =
 986                             cpu_to_le32(reply);
 987                         wmb();
 988                         writel(ioc->reply_free_host_index,
 989                             &ioc->chip->ReplyFreeHostIndex);
 990                 }
 991
 992  next:
 993
 994                 rpf->Words = cpu_to_le64(ULLONG_MAX);
 995                 reply_q->reply_post_host_index =
 996                     (reply_q->reply_post_host_index ==
 997                     (ioc->reply_post_queue_depth - 1)) ? 0 :
 998                     reply_q->reply_post_host_index + 1;
 999                 request_desript_type =
1000                     reply_q->reply_post_free[reply_q->reply_post_host_index].
1001                     Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1002                 completed_cmds++;
1003                 if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1004                         goto out;
1005                 if (!reply_q->reply_post_host_index)
1006                         rpf = reply_q->reply_post_free;
1007                 else
1008                         rpf++;
1009         } while (1);
1010
1011  out:
1012
1013         if (!completed_cmds) {
1014                 atomic_dec(&reply_q->busy);
1015                 return IRQ_NONE;
1016         }
1017         wmb();
1018         if (ioc->is_warpdrive) {
1019                 writel(reply_q->reply_post_host_index,
1020                 ioc->reply_post_host_index[msix_index]);
1021                 atomic_dec(&reply_q->busy);
1022                 return IRQ_HANDLED;
1023         }
1024         writel(reply_q->reply_post_host_index | (msix_index <<
1025             MPI2_RPHI_MSIX_INDEX_SHIFT), &ioc->chip->ReplyPostHostIndex);
1026         atomic_dec(&reply_q->busy);
1027         return IRQ_HANDLED;
1028 }
1029
1030 /**
1031  * _base_is_controller_msix_enabled - is controller support muli-reply queues
1032  * @ioc: per adapter object
1033  *
1034  */
1035 static inline int
1036 _base_is_controller_msix_enabled(struct MPT2SAS_ADAPTER *ioc)
1037 {
1038         return (ioc->facts.IOCCapabilities &
1039             MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable;
1040 }
1041
1042 /**
1043  * mpt2sas_base_flush_reply_queues - flushing the MSIX reply queues
1044  * @ioc: per adapter object
1045  * Context: ISR conext
1046  *
1047  * Called when a Task Management request has completed. We want
1048  * to flush the other reply queues so all the outstanding IO has been
1049  * completed back to OS before we process the TM completetion.
1050  *
1051  * Return nothing.
1052  */
1053 void
1054 mpt2sas_base_flush_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1055 {
1056         struct adapter_reply_queue *reply_q;
1057
1058         /* If MSIX capability is turned off
1059          * then multi-queues are not enabled
1060          */
1061         if (!_base_is_controller_msix_enabled(ioc))
1062                 return;
1063
1064         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
1065                 if (ioc->shost_recovery)
1066                         return;
1067                 /* TMs are on msix_index == 0 */
1068                 if (reply_q->msix_index == 0)
1069                         continue;
1070                 _base_interrupt(reply_q->vector, (void *)reply_q);
1071         }
1072 }
1073
1074 /**
1075  * mpt2sas_base_release_callback_handler - clear interrupt callback handler
1076  * @cb_idx: callback index
1077  *
1078  * Return nothing.
1079  */
1080 void
1081 mpt2sas_base_release_callback_handler(u8 cb_idx)
1082 {
1083         mpt_callbacks[cb_idx] = NULL;
1084 }
1085
1086 /**
1087  * mpt2sas_base_register_callback_handler - obtain index for the interrupt callback handler
1088  * @cb_func: callback function
1089  *
1090  * Returns cb_func.
1091  */
1092 u8
1093 mpt2sas_base_register_callback_handler(MPT_CALLBACK cb_func)
1094 {
1095         u8 cb_idx;
1096
1097         for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--)
1098                 if (mpt_callbacks[cb_idx] == NULL)
1099                         break;
1100
1101         mpt_callbacks[cb_idx] = cb_func;
1102         return cb_idx;
1103 }
1104
1105 /**
1106  * mpt2sas_base_initialize_callback_handler - initialize the interrupt callback handler
1107  *
1108  * Return nothing.
1109  */
1110 void
1111 mpt2sas_base_initialize_callback_handler(void)
1112 {
1113         u8 cb_idx;
1114
1115         for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++)
1116                 mpt2sas_base_release_callback_handler(cb_idx);
1117 }
1118
1119 /**
1120  * mpt2sas_base_build_zero_len_sge - build zero length sg entry
1121  * @ioc: per adapter object
1122  * @paddr: virtual address for SGE
1123  *
1124  * Create a zero length scatter gather entry to insure the IOCs hardware has
1125  * something to use if the target device goes brain dead and tries
1126  * to send data even when none is asked for.
1127  *
1128  * Return nothing.
1129  */
1130 void
1131 mpt2sas_base_build_zero_len_sge(struct MPT2SAS_ADAPTER *ioc, void *paddr)
1132 {
1133         u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT |
1134             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST |
1135             MPI2_SGE_FLAGS_SIMPLE_ELEMENT) <<
1136             MPI2_SGE_FLAGS_SHIFT);
1137         ioc->base_add_sg_single(paddr, flags_length, -1);
1138 }
1139
1140 /**
1141  * _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr.
1142  * @paddr: virtual address for SGE
1143  * @flags_length: SGE flags and data transfer length
1144  * @dma_addr: Physical address
1145  *
1146  * Return nothing.
1147  */
1148 static void
1149 _base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1150 {
1151         Mpi2SGESimple32_t *sgel = paddr;
1152
1153         flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING |
1154             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1155         sgel->FlagsLength = cpu_to_le32(flags_length);
1156         sgel->Address = cpu_to_le32(dma_addr);
1157 }
1158
1159
1160 /**
1161  * _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr.
1162  * @paddr: virtual address for SGE
1163  * @flags_length: SGE flags and data transfer length
1164  * @dma_addr: Physical address
1165  *
1166  * Return nothing.
1167  */
1168 static void
1169 _base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1170 {
1171         Mpi2SGESimple64_t *sgel = paddr;
1172
1173         flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
1174             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1175         sgel->FlagsLength = cpu_to_le32(flags_length);
1176         sgel->Address = cpu_to_le64(dma_addr);
1177 }
1178
1179 #define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10))
1180
1181 /**
1182  * _base_config_dma_addressing - set dma addressing
1183  * @ioc: per adapter object
1184  * @pdev: PCI device struct
1185  *
1186  * Returns 0 for success, non-zero for failure.
1187  */
1188 static int
1189 _base_config_dma_addressing(struct MPT2SAS_ADAPTER *ioc, struct pci_dev *pdev)
1190 {
1191         struct sysinfo s;
1192         u64 consistent_dma_mask;
1193
1194         if (ioc->dma_mask)
1195                 consistent_dma_mask = DMA_BIT_MASK(64);
1196         else
1197                 consistent_dma_mask = DMA_BIT_MASK(32);
1198
1199         if (sizeof(dma_addr_t) > 4) {
1200                 const uint64_t required_mask =
1201                     dma_get_required_mask(&pdev->dev);
1202                 if ((required_mask > DMA_BIT_MASK(32)) &&
1203                     !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
1204                     !pci_set_consistent_dma_mask(pdev, consistent_dma_mask)) {
1205                         ioc->base_add_sg_single = &_base_add_sg_single_64;
1206                         ioc->sge_size = sizeof(Mpi2SGESimple64_t);
1207                         ioc->dma_mask = 64;
1208                         goto out;
1209                 }
1210         }
1211
1212         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
1213             && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1214                 ioc->base_add_sg_single = &_base_add_sg_single_32;
1215                 ioc->sge_size = sizeof(Mpi2SGESimple32_t);
1216                 ioc->dma_mask = 32;
1217         } else
1218                 return -ENODEV;
1219
1220  out:
1221         si_meminfo(&s);
1222         printk(MPT2SAS_INFO_FMT
1223             "%d BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (%ld kB)\n",
1224             ioc->name, ioc->dma_mask, convert_to_kb(s.totalram));
1225
1226         return 0;
1227 }
1228
1229 static int
1230 _base_change_consistent_dma_mask(struct MPT2SAS_ADAPTER *ioc,
1231                                   struct pci_dev *pdev)
1232 {
1233         if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
1234                 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
1235                         return -ENODEV;
1236         }
1237         return 0;
1238 }
1239 /**
1240  * _base_check_enable_msix - checks MSIX capabable.
1241  * @ioc: per adapter object
1242  *
1243  * Check to see if card is capable of MSIX, and set number
1244  * of available msix vectors
1245  */
1246 static int
1247 _base_check_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1248 {
1249         int base;
1250         u16 message_control;
1251
1252
1253         /* Check whether controller SAS2008 B0 controller,
1254            if it is SAS2008 B0 controller use IO-APIC instead of MSIX */
1255         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 &&
1256             ioc->pdev->revision == 0x01) {
1257                 return -EINVAL;
1258         }
1259
1260         base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
1261         if (!base) {
1262                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "msix not "
1263                     "supported\n", ioc->name));
1264                 return -EINVAL;
1265         }
1266
1267         /* get msix vector count */
1268         /* NUMA_IO not supported for older controllers */
1269         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2004 ||
1270             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 ||
1271             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_1 ||
1272             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_2 ||
1273             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_3 ||
1274             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_1 ||
1275             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_2)
1276                 ioc->msix_vector_count = 1;
1277         else {
1278                 pci_read_config_word(ioc->pdev, base + 2, &message_control);
1279                 ioc->msix_vector_count = (message_control & 0x3FF) + 1;
1280         }
1281         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "msix is supported, "
1282             "vector_count(%d)\n", ioc->name, ioc->msix_vector_count));
1283
1284         return 0;
1285 }
1286
1287 /**
1288  * _base_free_irq - free irq
1289  * @ioc: per adapter object
1290  *
1291  * Freeing respective reply_queue from the list.
1292  */
1293 static void
1294 _base_free_irq(struct MPT2SAS_ADAPTER *ioc)
1295 {
1296         struct adapter_reply_queue *reply_q, *next;
1297
1298         if (list_empty(&ioc->reply_queue_list))
1299                 return;
1300
1301         list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) {
1302                 list_del(&reply_q->list);
1303                 irq_set_affinity_hint(reply_q->vector, NULL);
1304                 free_cpumask_var(reply_q->affinity_hint);
1305                 synchronize_irq(reply_q->vector);
1306                 free_irq(reply_q->vector, reply_q);
1307                 kfree(reply_q);
1308         }
1309 }
1310
1311 /**
1312  * _base_request_irq - request irq
1313  * @ioc: per adapter object
1314  * @index: msix index into vector table
1315  * @vector: irq vector
1316  *
1317  * Inserting respective reply_queue into the list.
1318  */
1319 static int
1320 _base_request_irq(struct MPT2SAS_ADAPTER *ioc, u8 index, u32 vector)
1321 {
1322         struct adapter_reply_queue *reply_q;
1323         int r;
1324
1325         reply_q =  kzalloc(sizeof(struct adapter_reply_queue), GFP_KERNEL);
1326         if (!reply_q) {
1327                 printk(MPT2SAS_ERR_FMT "unable to allocate memory %d!\n",
1328                     ioc->name, (int)sizeof(struct adapter_reply_queue));
1329                 return -ENOMEM;
1330         }
1331         reply_q->ioc = ioc;
1332         reply_q->msix_index = index;
1333         reply_q->vector = vector;
1334
1335         if (!alloc_cpumask_var(&reply_q->affinity_hint, GFP_KERNEL))
1336                 return -ENOMEM;
1337         cpumask_clear(reply_q->affinity_hint);
1338
1339         atomic_set(&reply_q->busy, 0);
1340         if (ioc->msix_enable)
1341                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d-msix%d",
1342                     MPT2SAS_DRIVER_NAME, ioc->id, index);
1343         else
1344                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d",
1345                     MPT2SAS_DRIVER_NAME, ioc->id);
1346         r = request_irq(vector, _base_interrupt, IRQF_SHARED, reply_q->name,
1347             reply_q);
1348         if (r) {
1349                 printk(MPT2SAS_ERR_FMT "unable to allocate interrupt %d!\n",
1350                     reply_q->name, vector);
1351                 kfree(reply_q);
1352                 return -EBUSY;
1353         }
1354
1355         INIT_LIST_HEAD(&reply_q->list);
1356         list_add_tail(&reply_q->list, &ioc->reply_queue_list);
1357         return 0;
1358 }
1359
1360 /**
1361  * _base_assign_reply_queues - assigning msix index for each cpu
1362  * @ioc: per adapter object
1363  *
1364  * The enduser would need to set the affinity via /proc/irq/#/smp_affinity
1365  *
1366  * It would nice if we could call irq_set_affinity, however it is not
1367  * an exported symbol
1368  */
1369 static void
1370 _base_assign_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1371 {
1372         unsigned int cpu, nr_cpus, nr_msix, index = 0;
1373         struct adapter_reply_queue *reply_q;
1374
1375         if (!_base_is_controller_msix_enabled(ioc))
1376                 return;
1377
1378         memset(ioc->cpu_msix_table, 0, ioc->cpu_msix_table_sz);
1379
1380         nr_cpus = num_online_cpus();
1381         nr_msix = ioc->reply_queue_count = min(ioc->reply_queue_count,
1382                                                ioc->facts.MaxMSIxVectors);
1383         if (!nr_msix)
1384                 return;
1385
1386         cpu = cpumask_first(cpu_online_mask);
1387
1388         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
1389
1390                 unsigned int i, group = nr_cpus / nr_msix;
1391
1392                 if (cpu >= nr_cpus)
1393                         break;
1394
1395                 if (index < nr_cpus % nr_msix)
1396                         group++;
1397
1398                 for (i = 0 ; i < group ; i++) {
1399                         ioc->cpu_msix_table[cpu] = index;
1400                         cpumask_or(reply_q->affinity_hint,
1401                                    reply_q->affinity_hint, get_cpu_mask(cpu));
1402                         cpu = cpumask_next(cpu, cpu_online_mask);
1403                 }
1404
1405                 if (irq_set_affinity_hint(reply_q->vector,
1406                                            reply_q->affinity_hint))
1407                         dinitprintk(ioc, pr_info(MPT2SAS_FMT
1408                             "error setting affinity hint for irq vector %d\n",
1409                             ioc->name, reply_q->vector));
1410                 index++;
1411         }
1412 }
1413
1414 /**
1415  * _base_disable_msix - disables msix
1416  * @ioc: per adapter object
1417  *
1418  */
1419 static void
1420 _base_disable_msix(struct MPT2SAS_ADAPTER *ioc)
1421 {
1422         if (ioc->msix_enable) {
1423                 pci_disable_msix(ioc->pdev);
1424                 ioc->msix_enable = 0;
1425         }
1426 }
1427
1428 /**
1429  * _base_enable_msix - enables msix, failback to io_apic
1430  * @ioc: per adapter object
1431  *
1432  */
1433 static int
1434 _base_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1435 {
1436         struct msix_entry *entries, *a;
1437         int r;
1438         int i;
1439         u8 try_msix = 0;
1440
1441         if (msix_disable == -1 || msix_disable == 0)
1442                 try_msix = 1;
1443
1444         if (!try_msix)
1445                 goto try_ioapic;
1446
1447         if (_base_check_enable_msix(ioc) != 0)
1448                 goto try_ioapic;
1449
1450         ioc->reply_queue_count = min_t(int, ioc->cpu_count,
1451             ioc->msix_vector_count);
1452
1453         if (!ioc->rdpq_array_enable && max_msix_vectors == -1)
1454                 max_msix_vectors = 8;
1455
1456         if (max_msix_vectors > 0) {
1457                 ioc->reply_queue_count = min_t(int, max_msix_vectors,
1458                     ioc->reply_queue_count);
1459                 ioc->msix_vector_count = ioc->reply_queue_count;
1460         } else if (max_msix_vectors == 0)
1461                 goto try_ioapic;
1462
1463         printk(MPT2SAS_INFO_FMT
1464         "MSI-X vectors supported: %d, no of cores: %d, max_msix_vectors: %d\n",
1465          ioc->name, ioc->msix_vector_count, ioc->cpu_count, max_msix_vectors);
1466
1467         entries = kcalloc(ioc->reply_queue_count, sizeof(struct msix_entry),
1468             GFP_KERNEL);
1469         if (!entries) {
1470                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "kcalloc "
1471                     "failed @ at %s:%d/%s() !!!\n", ioc->name, __FILE__,
1472                     __LINE__, __func__));
1473                 goto try_ioapic;
1474         }
1475
1476         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++)
1477                 a->entry = i;
1478
1479         r = pci_enable_msix_exact(ioc->pdev, entries, ioc->reply_queue_count);
1480         if (r) {
1481                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT
1482                     "pci_enable_msix_exact failed (r=%d) !!!\n", ioc->name, r));
1483                 kfree(entries);
1484                 goto try_ioapic;
1485         }
1486
1487         ioc->msix_enable = 1;
1488         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++) {
1489                 r = _base_request_irq(ioc, i, a->vector);
1490                 if (r) {
1491                         _base_free_irq(ioc);
1492                         _base_disable_msix(ioc);
1493                         kfree(entries);
1494                         goto try_ioapic;
1495                 }
1496         }
1497
1498         kfree(entries);
1499         return 0;
1500
1501 /* failback to io_apic interrupt routing */
1502  try_ioapic:
1503
1504         ioc->reply_queue_count = 1;
1505         r = _base_request_irq(ioc, 0, ioc->pdev->irq);
1506
1507         return r;
1508 }
1509
1510 /**
1511  * mpt2sas_base_map_resources - map in controller resources (io/irq/memap)
1512  * @ioc: per adapter object
1513  *
1514  * Returns 0 for success, non-zero for failure.
1515  */
1516 int
1517 mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
1518 {
1519         struct pci_dev *pdev = ioc->pdev;
1520         u32 memap_sz;
1521         u32 pio_sz;
1522         int i, r = 0;
1523         u64 pio_chip = 0;
1524         u64 chip_phys = 0;
1525         struct adapter_reply_queue *reply_q;
1526
1527         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n",
1528             ioc->name, __func__));
1529
1530         ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM);
1531         if (pci_enable_device_mem(pdev)) {
1532                 printk(MPT2SAS_WARN_FMT "pci_enable_device_mem: "
1533                     "failed\n", ioc->name);
1534                 ioc->bars = 0;
1535                 return -ENODEV;
1536         }
1537
1538
1539         if (pci_request_selected_regions(pdev, ioc->bars,
1540             MPT2SAS_DRIVER_NAME)) {
1541                 printk(MPT2SAS_WARN_FMT "pci_request_selected_regions: "
1542                     "failed\n", ioc->name);
1543                 ioc->bars = 0;
1544                 r = -ENODEV;
1545                 goto out_fail;
1546         }
1547
1548         /* AER (Advanced Error Reporting) hooks */
1549         pci_enable_pcie_error_reporting(pdev);
1550
1551         pci_set_master(pdev);
1552
1553         if (_base_config_dma_addressing(ioc, pdev) != 0) {
1554                 printk(MPT2SAS_WARN_FMT "no suitable DMA mask for %s\n",
1555                     ioc->name, pci_name(pdev));
1556                 r = -ENODEV;
1557                 goto out_fail;
1558         }
1559
1560         for (i = 0, memap_sz = 0, pio_sz = 0; (i < DEVICE_COUNT_RESOURCE) &&
1561              (!memap_sz || !pio_sz); i++) {
1562                 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
1563                         if (pio_sz)
1564                                 continue;
1565                         pio_chip = (u64)pci_resource_start(pdev, i);
1566                         pio_sz = pci_resource_len(pdev, i);
1567                 } else {
1568                         if (memap_sz)
1569                                 continue;
1570                         /* verify memory resource is valid before using */
1571                         if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
1572                                 ioc->chip_phys = pci_resource_start(pdev, i);
1573                                 chip_phys = (u64)ioc->chip_phys;
1574                                 memap_sz = pci_resource_len(pdev, i);
1575                                 ioc->chip = ioremap(ioc->chip_phys, memap_sz);
1576                         }
1577                 }
1578         }
1579
1580         if (ioc->chip == NULL) {
1581                 printk(MPT2SAS_ERR_FMT "unable to map adapter memory! "
1582                        "or resource not found\n", ioc->name);
1583                 r = -EINVAL;
1584                 goto out_fail;
1585         }
1586
1587         _base_mask_interrupts(ioc);
1588
1589         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
1590         if (r)
1591                 goto out_fail;
1592
1593         if (!ioc->rdpq_array_enable_assigned) {
1594                 ioc->rdpq_array_enable = ioc->rdpq_array_capable;
1595                 ioc->rdpq_array_enable_assigned = 1;
1596         }
1597
1598         r = _base_enable_msix(ioc);
1599         if (r)
1600                 goto out_fail;
1601
1602         list_for_each_entry(reply_q, &ioc->reply_queue_list, list)
1603                 printk(MPT2SAS_INFO_FMT "%s: IRQ %d\n",
1604                     reply_q->name,  ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
1605                     "IO-APIC enabled"), reply_q->vector);
1606
1607         printk(MPT2SAS_INFO_FMT "iomem(0x%016llx), mapped(0x%p), size(%d)\n",
1608             ioc->name, (unsigned long long)chip_phys, ioc->chip, memap_sz);
1609         printk(MPT2SAS_INFO_FMT "ioport(0x%016llx), size(%d)\n",
1610             ioc->name, (unsigned long long)pio_chip, pio_sz);
1611
1612         /* Save PCI configuration state for recovery from PCI AER/EEH errors */
1613         pci_save_state(pdev);
1614
1615         return 0;
1616
1617  out_fail:
1618         if (ioc->chip_phys)
1619                 iounmap(ioc->chip);
1620         ioc->chip_phys = 0;
1621         pci_release_selected_regions(ioc->pdev, ioc->bars);
1622         pci_disable_pcie_error_reporting(pdev);
1623         pci_disable_device(pdev);
1624         return r;
1625 }
1626
1627 /**
1628  * mpt2sas_base_get_msg_frame - obtain request mf pointer
1629  * @ioc: per adapter object
1630  * @smid: system request message index(smid zero is invalid)
1631  *
1632  * Returns virt pointer to message frame.
1633  */
1634 void *
1635 mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1636 {
1637         return (void *)(ioc->request + (smid * ioc->request_sz));
1638 }
1639
1640 /**
1641  * mpt2sas_base_get_sense_buffer - obtain a sense buffer assigned to a mf request
1642  * @ioc: per adapter object
1643  * @smid: system request message index
1644  *
1645  * Returns virt pointer to sense buffer.
1646  */
1647 void *
1648 mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1649 {
1650         return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1651 }
1652
1653 /**
1654  * mpt2sas_base_get_sense_buffer_dma - obtain a sense buffer assigned to a mf request
1655  * @ioc: per adapter object
1656  * @smid: system request message index
1657  *
1658  * Returns phys pointer to the low 32bit address of the sense buffer.
1659  */
1660 __le32
1661 mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1662 {
1663         return cpu_to_le32(ioc->sense_dma +
1664                         ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1665 }
1666
1667 /**
1668  * mpt2sas_base_get_reply_virt_addr - obtain reply frames virt address
1669  * @ioc: per adapter object
1670  * @phys_addr: lower 32 physical addr of the reply
1671  *
1672  * Converts 32bit lower physical addr into a virt address.
1673  */
1674 void *
1675 mpt2sas_base_get_reply_virt_addr(struct MPT2SAS_ADAPTER *ioc, u32 phys_addr)
1676 {
1677         if (!phys_addr)
1678                 return NULL;
1679         return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
1680 }
1681
1682 /**
1683  * mpt2sas_base_get_smid - obtain a free smid from internal queue
1684  * @ioc: per adapter object
1685  * @cb_idx: callback index
1686  *
1687  * Returns smid (zero is invalid)
1688  */
1689 u16
1690 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1691 {
1692         unsigned long flags;
1693         struct request_tracker *request;
1694         u16 smid;
1695
1696         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1697         if (list_empty(&ioc->internal_free_list)) {
1698                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1699                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1700                     ioc->name, __func__);
1701                 return 0;
1702         }
1703
1704         request = list_entry(ioc->internal_free_list.next,
1705             struct request_tracker, tracker_list);
1706         request->cb_idx = cb_idx;
1707         smid = request->smid;
1708         list_del(&request->tracker_list);
1709         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1710         return smid;
1711 }
1712
1713 /**
1714  * mpt2sas_base_get_smid_scsiio - obtain a free smid from scsiio queue
1715  * @ioc: per adapter object
1716  * @cb_idx: callback index
1717  * @scmd: pointer to scsi command object
1718  *
1719  * Returns smid (zero is invalid)
1720  */
1721 u16
1722 mpt2sas_base_get_smid_scsiio(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx,
1723     struct scsi_cmnd *scmd)
1724 {
1725         unsigned long flags;
1726         struct scsiio_tracker *request;
1727         u16 smid;
1728
1729         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1730         if (list_empty(&ioc->free_list)) {
1731                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1732                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1733                     ioc->name, __func__);
1734                 return 0;
1735         }
1736
1737         request = list_entry(ioc->free_list.next,
1738             struct scsiio_tracker, tracker_list);
1739         request->scmd = scmd;
1740         request->cb_idx = cb_idx;
1741         smid = request->smid;
1742         list_del(&request->tracker_list);
1743         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1744         return smid;
1745 }
1746
1747 /**
1748  * mpt2sas_base_get_smid_hpr - obtain a free smid from hi-priority queue
1749  * @ioc: per adapter object
1750  * @cb_idx: callback index
1751  *
1752  * Returns smid (zero is invalid)
1753  */
1754 u16
1755 mpt2sas_base_get_smid_hpr(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1756 {
1757         unsigned long flags;
1758         struct request_tracker *request;
1759         u16 smid;
1760
1761         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1762         if (list_empty(&ioc->hpr_free_list)) {
1763                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1764                 return 0;
1765         }
1766
1767         request = list_entry(ioc->hpr_free_list.next,
1768             struct request_tracker, tracker_list);
1769         request->cb_idx = cb_idx;
1770         smid = request->smid;
1771         list_del(&request->tracker_list);
1772         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1773         return smid;
1774 }
1775
1776
1777 /**
1778  * mpt2sas_base_free_smid - put smid back on free_list
1779  * @ioc: per adapter object
1780  * @smid: system request message index
1781  *
1782  * Return nothing.
1783  */
1784 void
1785 mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1786 {
1787         unsigned long flags;
1788         int i;
1789         struct chain_tracker *chain_req, *next;
1790
1791         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1792         if (smid < ioc->hi_priority_smid) {
1793                 /* scsiio queue */
1794                 i = smid - 1;
1795                 if (!list_empty(&ioc->scsi_lookup[i].chain_list)) {
1796                         list_for_each_entry_safe(chain_req, next,
1797                             &ioc->scsi_lookup[i].chain_list, tracker_list) {
1798                                 list_del_init(&chain_req->tracker_list);
1799                                 list_add(&chain_req->tracker_list,
1800                                     &ioc->free_chain_list);
1801                         }
1802                 }
1803                 ioc->scsi_lookup[i].cb_idx = 0xFF;
1804                 ioc->scsi_lookup[i].scmd = NULL;
1805                 ioc->scsi_lookup[i].direct_io = 0;
1806                 list_add(&ioc->scsi_lookup[i].tracker_list,
1807                     &ioc->free_list);
1808                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1809
1810                 /*
1811                  * See _wait_for_commands_to_complete() call with regards
1812                  * to this code.
1813                  */
1814                 if (ioc->shost_recovery && ioc->pending_io_count) {
1815                         if (ioc->pending_io_count == 1)
1816                                 wake_up(&ioc->reset_wq);
1817                         ioc->pending_io_count--;
1818                 }
1819                 return;
1820         } else if (smid < ioc->internal_smid) {
1821                 /* hi-priority */
1822                 i = smid - ioc->hi_priority_smid;
1823                 ioc->hpr_lookup[i].cb_idx = 0xFF;
1824                 list_add(&ioc->hpr_lookup[i].tracker_list,
1825                     &ioc->hpr_free_list);
1826         } else if (smid <= ioc->hba_queue_depth) {
1827                 /* internal queue */
1828                 i = smid - ioc->internal_smid;
1829                 ioc->internal_lookup[i].cb_idx = 0xFF;
1830                 list_add(&ioc->internal_lookup[i].tracker_list,
1831                     &ioc->internal_free_list);
1832         }
1833         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1834 }
1835
1836 /**
1837  * _base_writeq - 64 bit write to MMIO
1838  * @ioc: per adapter object
1839  * @b: data payload
1840  * @addr: address in MMIO space
1841  * @writeq_lock: spin lock
1842  *
1843  * Glue for handling an atomic 64 bit word to MMIO. This special handling takes
1844  * care of 32 bit environment where its not quarenteed to send the entire word
1845  * in one transfer.
1846  */
1847 #ifndef writeq
1848 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1849     spinlock_t *writeq_lock)
1850 {
1851         unsigned long flags;
1852         __u64 data_out = cpu_to_le64(b);
1853
1854         spin_lock_irqsave(writeq_lock, flags);
1855         writel((u32)(data_out), addr);
1856         writel((u32)(data_out >> 32), (addr + 4));
1857         spin_unlock_irqrestore(writeq_lock, flags);
1858 }
1859 #else
1860 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1861     spinlock_t *writeq_lock)
1862 {
1863         writeq(cpu_to_le64(b), addr);
1864 }
1865 #endif
1866
1867 static inline u8
1868 _base_get_msix_index(struct MPT2SAS_ADAPTER *ioc)
1869 {
1870         return ioc->cpu_msix_table[raw_smp_processor_id()];
1871 }
1872
1873 /**
1874  * mpt2sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
1875  * @ioc: per adapter object
1876  * @smid: system request message index
1877  * @handle: device handle
1878  *
1879  * Return nothing.
1880  */
1881 void
1882 mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid, u16 handle)
1883 {
1884         Mpi2RequestDescriptorUnion_t descriptor;
1885         u64 *request = (u64 *)&descriptor;
1886
1887
1888         descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
1889         descriptor.SCSIIO.MSIxIndex =  _base_get_msix_index(ioc);
1890         descriptor.SCSIIO.SMID = cpu_to_le16(smid);
1891         descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
1892         descriptor.SCSIIO.LMID = 0;
1893         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1894             &ioc->scsi_lookup_lock);
1895 }
1896
1897
1898 /**
1899  * mpt2sas_base_put_smid_hi_priority - send Task Management request to firmware
1900  * @ioc: per adapter object
1901  * @smid: system request message index
1902  *
1903  * Return nothing.
1904  */
1905 void
1906 mpt2sas_base_put_smid_hi_priority(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1907 {
1908         Mpi2RequestDescriptorUnion_t descriptor;
1909         u64 *request = (u64 *)&descriptor;
1910
1911         descriptor.HighPriority.RequestFlags =
1912             MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
1913         descriptor.HighPriority.MSIxIndex =  0;
1914         descriptor.HighPriority.SMID = cpu_to_le16(smid);
1915         descriptor.HighPriority.LMID = 0;
1916         descriptor.HighPriority.Reserved1 = 0;
1917         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1918             &ioc->scsi_lookup_lock);
1919 }
1920
1921 /**
1922  * mpt2sas_base_put_smid_default - Default, primarily used for config pages
1923  * @ioc: per adapter object
1924  * @smid: system request message index
1925  *
1926  * Return nothing.
1927  */
1928 void
1929 mpt2sas_base_put_smid_default(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1930 {
1931         Mpi2RequestDescriptorUnion_t descriptor;
1932         u64 *request = (u64 *)&descriptor;
1933
1934         descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1935         descriptor.Default.MSIxIndex =  _base_get_msix_index(ioc);
1936         descriptor.Default.SMID = cpu_to_le16(smid);
1937         descriptor.Default.LMID = 0;
1938         descriptor.Default.DescriptorTypeDependent = 0;
1939         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1940             &ioc->scsi_lookup_lock);
1941 }
1942
1943 /**
1944  * mpt2sas_base_put_smid_target_assist - send Target Assist/Status to firmware
1945  * @ioc: per adapter object
1946  * @smid: system request message index
1947  * @io_index: value used to track the IO
1948  *
1949  * Return nothing.
1950  */
1951 void
1952 mpt2sas_base_put_smid_target_assist(struct MPT2SAS_ADAPTER *ioc, u16 smid,
1953     u16 io_index)
1954 {
1955         Mpi2RequestDescriptorUnion_t descriptor;
1956         u64 *request = (u64 *)&descriptor;
1957
1958         descriptor.SCSITarget.RequestFlags =
1959             MPI2_REQ_DESCRIPT_FLAGS_SCSI_TARGET;
1960         descriptor.SCSITarget.MSIxIndex =  _base_get_msix_index(ioc);
1961         descriptor.SCSITarget.SMID = cpu_to_le16(smid);
1962         descriptor.SCSITarget.LMID = 0;
1963         descriptor.SCSITarget.IoIndex = cpu_to_le16(io_index);
1964         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1965             &ioc->scsi_lookup_lock);
1966 }
1967
1968 /**
1969  * _base_display_dell_branding - Disply branding string
1970  * @ioc: per adapter object
1971  *
1972  * Return nothing.
1973  */
1974 static void
1975 _base_display_dell_branding(struct MPT2SAS_ADAPTER *ioc)
1976 {
1977         char dell_branding[MPT2SAS_DELL_BRANDING_SIZE];
1978
1979         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_DELL)
1980                 return;
1981
1982         memset(dell_branding, 0, MPT2SAS_DELL_BRANDING_SIZE);
1983         switch (ioc->pdev->subsystem_device) {
1984         case MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID:
1985                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING,
1986                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1987                 break;
1988         case MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID:
1989                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING,
1990                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1991                 break;
1992         case MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID:
1993                 strncpy(dell_branding,
1994                     MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING,
1995                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1996                 break;
1997         case MPT2SAS_DELL_PERC_H200_MODULAR_SSDID:
1998                 strncpy(dell_branding,
1999                     MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING,
2000                     MPT2SAS_DELL_BRANDING_SIZE - 1);
2001                 break;
2002         case MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID:
2003                 strncpy(dell_branding,
2004                     MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING,
2005                     MPT2SAS_DELL_BRANDING_SIZE - 1);
2006                 break;
2007         case MPT2SAS_DELL_PERC_H200_SSDID:
2008                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_BRANDING,
2009                     MPT2SAS_DELL_BRANDING_SIZE - 1);
2010                 break;
2011         case MPT2SAS_DELL_6GBPS_SAS_SSDID:
2012                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_BRANDING,
2013                     MPT2SAS_DELL_BRANDING_SIZE - 1);
2014                 break;
2015         default:
2016                 sprintf(dell_branding, "0x%4X", ioc->pdev->subsystem_device);
2017                 break;
2018         }
2019
2020         printk(MPT2SAS_INFO_FMT "%s: Vendor(0x%04X), Device(0x%04X),"
2021             " SSVID(0x%04X), SSDID(0x%04X)\n", ioc->name, dell_branding,
2022             ioc->pdev->vendor, ioc->pdev->device, ioc->pdev->subsystem_vendor,
2023             ioc->pdev->subsystem_device);
2024 }
2025
2026 /**
2027  * _base_display_intel_branding - Display branding string
2028  * @ioc: per adapter object
2029  *
2030  * Return nothing.
2031  */
2032 static void
2033 _base_display_intel_branding(struct MPT2SAS_ADAPTER *ioc)
2034 {
2035         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
2036                 return;
2037
2038         switch (ioc->pdev->device) {
2039         case MPI2_MFGPAGE_DEVID_SAS2008:
2040                 switch (ioc->pdev->subsystem_device) {
2041                 case MPT2SAS_INTEL_RMS2LL080_SSDID:
2042                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2043                             MPT2SAS_INTEL_RMS2LL080_BRANDING);
2044                         break;
2045                 case MPT2SAS_INTEL_RMS2LL040_SSDID:
2046                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2047                             MPT2SAS_INTEL_RMS2LL040_BRANDING);
2048                         break;
2049                 case MPT2SAS_INTEL_SSD910_SSDID:
2050                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2051                             MPT2SAS_INTEL_SSD910_BRANDING);
2052                         break;
2053                 default:
2054                         break;
2055                 }
2056         case MPI2_MFGPAGE_DEVID_SAS2308_2:
2057                 switch (ioc->pdev->subsystem_device) {
2058                 case MPT2SAS_INTEL_RS25GB008_SSDID:
2059                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2060                             MPT2SAS_INTEL_RS25GB008_BRANDING);
2061                         break;
2062                 case MPT2SAS_INTEL_RMS25JB080_SSDID:
2063                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2064                             MPT2SAS_INTEL_RMS25JB080_BRANDING);
2065                         break;
2066                 case MPT2SAS_INTEL_RMS25JB040_SSDID:
2067                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2068                             MPT2SAS_INTEL_RMS25JB040_BRANDING);
2069                         break;
2070                 case MPT2SAS_INTEL_RMS25KB080_SSDID:
2071                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2072                             MPT2SAS_INTEL_RMS25KB080_BRANDING);
2073                         break;
2074                 case MPT2SAS_INTEL_RMS25KB040_SSDID:
2075                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2076                             MPT2SAS_INTEL_RMS25KB040_BRANDING);
2077                         break;
2078                 case MPT2SAS_INTEL_RMS25LB040_SSDID:
2079                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2080                             MPT2SAS_INTEL_RMS25LB040_BRANDING);
2081                         break;
2082                 case MPT2SAS_INTEL_RMS25LB080_SSDID:
2083                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2084                             MPT2SAS_INTEL_RMS25LB080_BRANDING);
2085                         break;
2086                 default:
2087                         break;
2088                 }
2089         default:
2090                 break;
2091         }
2092 }
2093
2094 /**
2095  * _base_display_hp_branding - Display branding string
2096  * @ioc: per adapter object
2097  *
2098  * Return nothing.
2099  */
2100 static void
2101 _base_display_hp_branding(struct MPT2SAS_ADAPTER *ioc)
2102 {
2103         if (ioc->pdev->subsystem_vendor != MPT2SAS_HP_3PAR_SSVID)
2104                 return;
2105
2106         switch (ioc->pdev->device) {
2107         case MPI2_MFGPAGE_DEVID_SAS2004:
2108                 switch (ioc->pdev->subsystem_device) {
2109                 case MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_SSDID:
2110                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2111                             MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_BRANDING);
2112                         break;
2113                 default:
2114                         break;
2115                 }
2116         case MPI2_MFGPAGE_DEVID_SAS2308_2:
2117                 switch (ioc->pdev->subsystem_device) {
2118                 case MPT2SAS_HP_2_4_INTERNAL_SSDID:
2119                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2120                             MPT2SAS_HP_2_4_INTERNAL_BRANDING);
2121                         break;
2122                 case MPT2SAS_HP_2_4_EXTERNAL_SSDID:
2123                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2124                             MPT2SAS_HP_2_4_EXTERNAL_BRANDING);
2125                         break;
2126                 case MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_SSDID:
2127                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2128                             MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_BRANDING);
2129                         break;
2130                 case MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_SSDID:
2131                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2132                             MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_BRANDING);
2133                         break;
2134                 default:
2135                         break;
2136                 }
2137         default:
2138                 break;
2139         }
2140 }
2141
2142 /**
2143  * _base_display_ioc_capabilities - Disply IOC's capabilities.
2144  * @ioc: per adapter object
2145  *
2146  * Return nothing.
2147  */
2148 static void
2149 _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc)
2150 {
2151         int i = 0;
2152         char desc[16];
2153         u32 iounit_pg1_flags;
2154         u32 bios_version;
2155
2156         bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2157         strncpy(desc, ioc->manu_pg0.ChipName, 16);
2158         printk(MPT2SAS_INFO_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "
2159            "ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
2160             ioc->name, desc,
2161            (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2162            (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2163            (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2164            ioc->facts.FWVersion.Word & 0x000000FF,
2165            ioc->pdev->revision,
2166            (bios_version & 0xFF000000) >> 24,
2167            (bios_version & 0x00FF0000) >> 16,
2168            (bios_version & 0x0000FF00) >> 8,
2169             bios_version & 0x000000FF);
2170
2171         _base_display_dell_branding(ioc);
2172         _base_display_intel_branding(ioc);
2173         _base_display_hp_branding(ioc);
2174
2175         printk(MPT2SAS_INFO_FMT "Protocol=(", ioc->name);
2176
2177         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
2178                 printk("Initiator");
2179                 i++;
2180         }
2181
2182         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
2183                 printk("%sTarget", i ? "," : "");
2184                 i++;
2185         }
2186
2187         i = 0;
2188         printk("), ");
2189         printk("Capabilities=(");
2190
2191         if (!ioc->hide_ir_msg) {
2192                 if (ioc->facts.IOCCapabilities &
2193                     MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
2194                         printk("Raid");
2195                         i++;
2196                 }
2197         }
2198
2199         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
2200                 printk("%sTLR", i ? "," : "");
2201                 i++;
2202         }
2203
2204         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
2205                 printk("%sMulticast", i ? "," : "");
2206                 i++;
2207         }
2208
2209         if (ioc->facts.IOCCapabilities &
2210             MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
2211                 printk("%sBIDI Target", i ? "," : "");
2212                 i++;
2213         }
2214
2215         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
2216                 printk("%sEEDP", i ? "," : "");
2217                 i++;
2218         }
2219
2220         if (ioc->facts.IOCCapabilities &
2221             MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
2222                 printk("%sSnapshot Buffer", i ? "," : "");
2223                 i++;
2224         }
2225
2226         if (ioc->facts.IOCCapabilities &
2227             MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
2228                 printk("%sDiag Trace Buffer", i ? "," : "");
2229                 i++;
2230         }
2231
2232         if (ioc->facts.IOCCapabilities &
2233             MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) {
2234                 printk(KERN_INFO "%sDiag Extended Buffer", i ? "," : "");
2235                 i++;
2236         }
2237
2238         if (ioc->facts.IOCCapabilities &
2239             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
2240                 printk("%sTask Set Full", i ? "," : "");
2241                 i++;
2242         }
2243
2244         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2245         if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
2246                 printk("%sNCQ", i ? "," : "");
2247                 i++;
2248         }
2249
2250         printk(")\n");
2251 }
2252
2253 /**
2254  * mpt2sas_base_update_missing_delay - change the missing delay timers
2255  * @ioc: per adapter object
2256  * @device_missing_delay: amount of time till device is reported missing
2257  * @io_missing_delay: interval IO is returned when there is a missing device
2258  *
2259  * Return nothing.
2260  *
2261  * Passed on the command line, this function will modify the device missing
2262  * delay, as well as the io missing delay. This should be called at driver
2263  * load time.
2264  */
2265 void
2266 mpt2sas_base_update_missing_delay(struct MPT2SAS_ADAPTER *ioc,
2267         u16 device_missing_delay, u8 io_missing_delay)
2268 {
2269         u16 dmd, dmd_new, dmd_orignal;
2270         u8 io_missing_delay_original;
2271         u16 sz;
2272         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
2273         Mpi2ConfigReply_t mpi_reply;
2274         u8 num_phys = 0;
2275         u16 ioc_status;
2276
2277         mpt2sas_config_get_number_hba_phys(ioc, &num_phys);
2278         if (!num_phys)
2279                 return;
2280
2281         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (num_phys *
2282             sizeof(Mpi2SasIOUnit1PhyData_t));
2283         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
2284         if (!sas_iounit_pg1) {
2285                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2286                     ioc->name, __FILE__, __LINE__, __func__);
2287                 goto out;
2288         }
2289         if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
2290             sas_iounit_pg1, sz))) {
2291                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2292                     ioc->name, __FILE__, __LINE__, __func__);
2293                 goto out;
2294         }
2295         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
2296             MPI2_IOCSTATUS_MASK;
2297         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2298                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2299                     ioc->name, __FILE__, __LINE__, __func__);
2300                 goto out;
2301         }
2302
2303         /* device missing delay */
2304         dmd = sas_iounit_pg1->ReportDeviceMissingDelay;
2305         if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2306                 dmd = (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2307         else
2308                 dmd = dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2309         dmd_orignal = dmd;
2310         if (device_missing_delay > 0x7F) {
2311                 dmd = (device_missing_delay > 0x7F0) ? 0x7F0 :
2312                     device_missing_delay;
2313                 dmd = dmd / 16;
2314                 dmd |= MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16;
2315         } else
2316                 dmd = device_missing_delay;
2317         sas_iounit_pg1->ReportDeviceMissingDelay = dmd;
2318
2319         /* io missing delay */
2320         io_missing_delay_original = sas_iounit_pg1->IODeviceMissingDelay;
2321         sas_iounit_pg1->IODeviceMissingDelay = io_missing_delay;
2322
2323         if (!mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
2324             sz)) {
2325                 if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2326                         dmd_new = (dmd &
2327                             MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2328                 else
2329                         dmd_new =
2330                     dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2331                 printk(MPT2SAS_INFO_FMT "device_missing_delay: old(%d), "
2332                     "new(%d)\n", ioc->name, dmd_orignal, dmd_new);
2333                 printk(MPT2SAS_INFO_FMT "ioc_missing_delay: old(%d), "
2334                     "new(%d)\n", ioc->name, io_missing_delay_original,
2335                     io_missing_delay);
2336                 ioc->device_missing_delay = dmd_new;
2337                 ioc->io_missing_delay = io_missing_delay;
2338         }
2339
2340 out:
2341         kfree(sas_iounit_pg1);
2342 }
2343
2344 /**
2345  * _base_static_config_pages - static start of day config pages
2346  * @ioc: per adapter object
2347  *
2348  * Return nothing.
2349  */
2350 static void
2351 _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc)
2352 {
2353         Mpi2ConfigReply_t mpi_reply;
2354         u32 iounit_pg1_flags;
2355
2356         mpt2sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
2357         if (ioc->ir_firmware)
2358                 mpt2sas_config_get_manufacturing_pg10(ioc, &mpi_reply,
2359                     &ioc->manu_pg10);
2360         mpt2sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
2361         mpt2sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
2362         mpt2sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
2363         mpt2sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
2364         mpt2sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2365         mpt2sas_config_get_iounit_pg8(ioc, &mpi_reply, &ioc->iounit_pg8);
2366         _base_display_ioc_capabilities(ioc);
2367
2368         /*
2369          * Enable task_set_full handling in iounit_pg1 when the
2370          * facts capabilities indicate that its supported.
2371          */
2372         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2373         if ((ioc->facts.IOCCapabilities &
2374             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
2375                 iounit_pg1_flags &=
2376                     ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2377         else
2378                 iounit_pg1_flags |=
2379                     MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2380         ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
2381         mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2382
2383         if (ioc->iounit_pg8.NumSensors)
2384                 ioc->temp_sensors_count = ioc->iounit_pg8.NumSensors;
2385 }
2386
2387 /**
2388  * _base_release_memory_pools - release memory
2389  * @ioc: per adapter object
2390  *
2391  * Free memory allocated from _base_allocate_memory_pools.
2392  *
2393  * Return nothing.
2394  */
2395 static void
2396 _base_release_memory_pools(struct MPT2SAS_ADAPTER *ioc)
2397 {
2398         int i = 0;
2399         struct reply_post_struct *rps;
2400
2401         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2402             __func__));
2403
2404         if (ioc->request) {
2405                 pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
2406                     ioc->request,  ioc->request_dma);
2407                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "request_pool(0x%p)"
2408                     ": free\n", ioc->name, ioc->request));
2409                 ioc->request = NULL;
2410         }
2411
2412         if (ioc->sense) {
2413                 pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
2414                 if (ioc->sense_dma_pool)
2415                         pci_pool_destroy(ioc->sense_dma_pool);
2416                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_pool(0x%p)"
2417                     ": free\n", ioc->name, ioc->sense));
2418                 ioc->sense = NULL;
2419         }
2420
2421         if (ioc->reply) {
2422                 pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
2423                 if (ioc->reply_dma_pool)
2424                         pci_pool_destroy(ioc->reply_dma_pool);
2425                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_pool(0x%p)"
2426                      ": free\n", ioc->name, ioc->reply));
2427                 ioc->reply = NULL;
2428         }
2429
2430         if (ioc->reply_free) {
2431                 pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
2432                     ioc->reply_free_dma);
2433                 if (ioc->reply_free_dma_pool)
2434                         pci_pool_destroy(ioc->reply_free_dma_pool);
2435                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_pool"
2436                     "(0x%p): free\n", ioc->name, ioc->reply_free));
2437                 ioc->reply_free = NULL;
2438         }
2439
2440         if (ioc->reply_post) {
2441                 do {
2442                         rps = &ioc->reply_post[i];
2443                         if (rps->reply_post_free) {
2444                                 pci_pool_free(
2445                                     ioc->reply_post_free_dma_pool,
2446                                     rps->reply_post_free,
2447                                     rps->reply_post_free_dma);
2448                                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2449                                     "reply_post_free_pool(0x%p): free\n",
2450                                     ioc->name, rps->reply_post_free));
2451                                 rps->reply_post_free = NULL;
2452                         }
2453                 } while (ioc->rdpq_array_enable &&
2454                            (++i < ioc->reply_queue_count));
2455
2456                 if (ioc->reply_post_free_dma_pool)
2457                         pci_pool_destroy(ioc->reply_post_free_dma_pool);
2458                 kfree(ioc->reply_post);
2459         }
2460
2461         if (ioc->config_page) {
2462                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2463                     "config_page(0x%p): free\n", ioc->name,
2464                     ioc->config_page));
2465                 pci_free_consistent(ioc->pdev, ioc->config_page_sz,
2466                     ioc->config_page, ioc->config_page_dma);
2467         }
2468
2469         if (ioc->scsi_lookup) {
2470                 free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
2471                 ioc->scsi_lookup = NULL;
2472         }
2473         kfree(ioc->hpr_lookup);
2474         kfree(ioc->internal_lookup);
2475         if (ioc->chain_lookup) {
2476                 for (i = 0; i < ioc->chain_depth; i++) {
2477                         if (ioc->chain_lookup[i].chain_buffer)
2478                                 pci_pool_free(ioc->chain_dma_pool,
2479                                     ioc->chain_lookup[i].chain_buffer,
2480                                     ioc->chain_lookup[i].chain_buffer_dma);
2481                 }
2482                 if (ioc->chain_dma_pool)
2483                         pci_pool_destroy(ioc->chain_dma_pool);
2484                 free_pages((ulong)ioc->chain_lookup, ioc->chain_pages);
2485                 ioc->chain_lookup = NULL;
2486         }
2487 }
2488
2489
2490 /**
2491  * _base_allocate_memory_pools - allocate start of day memory pools
2492  * @ioc: per adapter object
2493  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2494  *
2495  * Returns 0 success, anything else error
2496  */
2497 static int
2498 _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc,  int sleep_flag)
2499 {
2500         struct mpt2sas_facts *facts;
2501         u16 max_sge_elements;
2502         u16 chains_needed_per_io;
2503         u32 sz, total_sz, reply_post_free_sz;
2504         u32 retry_sz;
2505         u16 max_request_credit;
2506         int i;
2507
2508         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2509             __func__));
2510
2511         retry_sz = 0;
2512         facts = &ioc->facts;
2513
2514         /* command line tunables  for max sgl entries */
2515         if (max_sgl_entries != -1) {
2516                 ioc->shost->sg_tablesize =  min_t(unsigned short,
2517                              max_sgl_entries, SCSI_MAX_SG_CHAIN_SEGMENTS);
2518                 if (ioc->shost->sg_tablesize > MPT2SAS_SG_DEPTH)
2519                         printk(MPT2SAS_WARN_FMT
2520                          "sg_tablesize(%u) is bigger than kernel defined"
2521                          " SCSI_MAX_SG_SEGMENTS(%u)\n", ioc->name,
2522                           ioc->shost->sg_tablesize, MPT2SAS_SG_DEPTH);
2523         } else {
2524                 ioc->shost->sg_tablesize = MPT2SAS_SG_DEPTH;
2525         }
2526
2527         /* command line tunables  for max controller queue depth */
2528         if (max_queue_depth != -1 && max_queue_depth != 0) {
2529                 max_request_credit = min_t(u16, max_queue_depth +
2530                         ioc->hi_priority_depth + ioc->internal_depth,
2531                         facts->RequestCredit);
2532                 if (max_request_credit > MAX_HBA_QUEUE_DEPTH)
2533                         max_request_credit =  MAX_HBA_QUEUE_DEPTH;
2534         } else
2535                 max_request_credit = min_t(u16, facts->RequestCredit,
2536                     MAX_HBA_QUEUE_DEPTH);
2537
2538         ioc->hba_queue_depth = max_request_credit;
2539         ioc->hi_priority_depth = facts->HighPriorityCredit;
2540         ioc->internal_depth = ioc->hi_priority_depth + 5;
2541
2542         /* request frame size */
2543         ioc->request_sz = facts->IOCRequestFrameSize * 4;
2544
2545         /* reply frame size */
2546         ioc->reply_sz = facts->ReplyFrameSize * 4;
2547
2548  retry_allocation:
2549         total_sz = 0;
2550         /* calculate number of sg elements left over in the 1st frame */
2551         max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
2552             sizeof(Mpi2SGEIOUnion_t)) + ioc->sge_size);
2553         ioc->max_sges_in_main_message = max_sge_elements/ioc->sge_size;
2554
2555         /* now do the same for a chain buffer */
2556         max_sge_elements = ioc->request_sz - ioc->sge_size;
2557         ioc->max_sges_in_chain_message = max_sge_elements/ioc->sge_size;
2558
2559         ioc->chain_offset_value_for_main_message =
2560             ((sizeof(Mpi2SCSIIORequest_t) - sizeof(Mpi2SGEIOUnion_t)) +
2561              (ioc->max_sges_in_chain_message * ioc->sge_size)) / 4;
2562
2563         /*
2564          *  MPT2SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
2565          */
2566         chains_needed_per_io = ((ioc->shost->sg_tablesize -
2567            ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
2568             + 1;
2569         if (chains_needed_per_io > facts->MaxChainDepth) {
2570                 chains_needed_per_io = facts->MaxChainDepth;
2571                 ioc->shost->sg_tablesize = min_t(u16,
2572                 ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
2573                 * chains_needed_per_io), ioc->shost->sg_tablesize);
2574         }
2575         ioc->chains_needed_per_io = chains_needed_per_io;
2576
2577         /* reply free queue sizing - taking into account for 64 FW events */
2578         ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
2579
2580         /* calculate reply descriptor post queue depth */
2581         ioc->reply_post_queue_depth = ioc->hba_queue_depth +
2582                                         ioc->reply_free_queue_depth +  1;
2583         /* align the reply post queue on the next 16 count boundary */
2584         if (ioc->reply_post_queue_depth % 16)
2585                 ioc->reply_post_queue_depth += 16 -
2586                         (ioc->reply_post_queue_depth % 16);
2587
2588
2589         if (ioc->reply_post_queue_depth >
2590             facts->MaxReplyDescriptorPostQueueDepth) {
2591                 ioc->reply_post_queue_depth =
2592                         facts->MaxReplyDescriptorPostQueueDepth -
2593                     (facts->MaxReplyDescriptorPostQueueDepth % 16);
2594                 ioc->hba_queue_depth =
2595                         ((ioc->reply_post_queue_depth - 64) / 2) - 1;
2596                 ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
2597         }
2598
2599         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "
2600             "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
2601             "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
2602             ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
2603             ioc->chains_needed_per_io));
2604
2605         /* reply post queue, 16 byte align */
2606         reply_post_free_sz = ioc->reply_post_queue_depth *
2607             sizeof(Mpi2DefaultReplyDescriptor_t);
2608
2609         sz = reply_post_free_sz;
2610         if (_base_is_controller_msix_enabled(ioc) && !ioc->rdpq_array_enable)
2611                 sz *= ioc->reply_queue_count;
2612
2613         ioc->reply_post = kcalloc((ioc->rdpq_array_enable) ?
2614             (ioc->reply_queue_count):1,
2615             sizeof(struct reply_post_struct), GFP_KERNEL);
2616
2617         if (!ioc->reply_post) {
2618                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: kcalloc failed\n",
2619                         ioc->name);
2620                 goto out;
2621         }
2622         ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
2623             ioc->pdev, sz, 16, 0);
2624         if (!ioc->reply_post_free_dma_pool) {
2625                 printk(MPT2SAS_ERR_FMT
2626                  "reply_post_free pool: pci_pool_create failed\n",
2627                  ioc->name);
2628                 goto out;
2629         }
2630         i = 0;
2631         do {
2632                 ioc->reply_post[i].reply_post_free =
2633                     pci_pool_alloc(ioc->reply_post_free_dma_pool,
2634                     GFP_KERNEL,
2635                     &ioc->reply_post[i].reply_post_free_dma);
2636                 if (!ioc->reply_post[i].reply_post_free) {
2637                         printk(MPT2SAS_ERR_FMT
2638                         "reply_post_free pool: pci_pool_alloc failed\n",
2639                         ioc->name);
2640                         goto out;
2641                 }
2642                 memset(ioc->reply_post[i].reply_post_free, 0, sz);
2643                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2644                     "reply post free pool (0x%p): depth(%d),"
2645                     "element_size(%d), pool_size(%d kB)\n", ioc->name,
2646                     ioc->reply_post[i].reply_post_free,
2647                     ioc->reply_post_queue_depth, 8, sz/1024));
2648                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2649                     "reply_post_free_dma = (0x%llx)\n", ioc->name,
2650                     (unsigned long long)
2651                     ioc->reply_post[i].reply_post_free_dma));
2652                 total_sz += sz;
2653         } while (ioc->rdpq_array_enable && (++i < ioc->reply_queue_count));
2654
2655         if (ioc->dma_mask == 64) {
2656                 if (_base_change_consistent_dma_mask(ioc, ioc->pdev) != 0) {
2657                         printk(MPT2SAS_WARN_FMT
2658                             "no suitable consistent DMA mask for %s\n",
2659                             ioc->name, pci_name(ioc->pdev));
2660                         goto out;
2661                 }
2662         }
2663
2664         ioc->scsiio_depth = ioc->hba_queue_depth -
2665             ioc->hi_priority_depth - ioc->internal_depth;
2666
2667         /* set the scsi host can_queue depth
2668          * with some internal commands that could be outstanding
2669          */
2670         ioc->shost->can_queue = ioc->scsiio_depth;
2671         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host: "
2672             "can_queue depth (%d)\n", ioc->name, ioc->shost->can_queue));
2673
2674         /* contiguous pool for request and chains, 16 byte align, one extra "
2675          * "frame for smid=0
2676          */
2677         ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth;
2678         sz = ((ioc->scsiio_depth + 1) * ioc->request_sz);
2679
2680         /* hi-priority queue */
2681         sz += (ioc->hi_priority_depth * ioc->request_sz);
2682
2683         /* internal queue */
2684         sz += (ioc->internal_depth * ioc->request_sz);
2685
2686         ioc->request_dma_sz = sz;
2687         ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
2688         if (!ioc->request) {
2689                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2690                     "failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2691                     "total(%d kB)\n", ioc->name, ioc->hba_queue_depth,
2692                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2693                 if (ioc->scsiio_depth < MPT2SAS_SAS_QUEUE_DEPTH)
2694                         goto out;
2695                 retry_sz += 64;
2696                 ioc->hba_queue_depth = max_request_credit - retry_sz;
2697                 goto retry_allocation;
2698         }
2699
2700         if (retry_sz)
2701                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2702                     "succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2703                     "total(%d kb)\n", ioc->name, ioc->hba_queue_depth,
2704                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2705
2706
2707         /* hi-priority queue */
2708         ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) *
2709             ioc->request_sz);
2710         ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) *
2711             ioc->request_sz);
2712
2713         /* internal queue */
2714         ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth *
2715             ioc->request_sz);
2716         ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth *
2717             ioc->request_sz);
2718
2719
2720         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool(0x%p): "
2721             "depth(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2722             ioc->request, ioc->hba_queue_depth, ioc->request_sz,
2723             (ioc->hba_queue_depth * ioc->request_sz)/1024));
2724         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool: dma(0x%llx)\n",
2725             ioc->name, (unsigned long long) ioc->request_dma));
2726         total_sz += sz;
2727
2728         sz = ioc->scsiio_depth * sizeof(struct scsiio_tracker);
2729         ioc->scsi_lookup_pages = get_order(sz);
2730         ioc->scsi_lookup = (struct scsiio_tracker *)__get_free_pages(
2731             GFP_KERNEL, ioc->scsi_lookup_pages);
2732         if (!ioc->scsi_lookup) {
2733                 printk(MPT2SAS_ERR_FMT "scsi_lookup: get_free_pages failed, "
2734                     "sz(%d)\n", ioc->name, (int)sz);
2735                 goto out;
2736         }
2737
2738         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsiio(0x%p): "
2739             "depth(%d)\n", ioc->name, ioc->request,
2740             ioc->scsiio_depth));
2741
2742         ioc->chain_depth = min_t(u32, ioc->chain_depth, MAX_CHAIN_DEPTH);
2743         sz = ioc->chain_depth * sizeof(struct chain_tracker);
2744         ioc->chain_pages = get_order(sz);
2745
2746         ioc->chain_lookup = (struct chain_tracker *)__get_free_pages(
2747             GFP_KERNEL, ioc->chain_pages);
2748         if (!ioc->chain_lookup) {
2749                 printk(MPT2SAS_ERR_FMT "chain_lookup: get_free_pages failed, "
2750                     "sz(%d)\n", ioc->name, (int)sz);
2751                 goto out;
2752         }
2753         ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev,
2754             ioc->request_sz, 16, 0);
2755         if (!ioc->chain_dma_pool) {
2756                 printk(MPT2SAS_ERR_FMT "chain_dma_pool: pci_pool_create "
2757                     "failed\n", ioc->name);
2758                 goto out;
2759         }
2760         for (i = 0; i < ioc->chain_depth; i++) {
2761                 ioc->chain_lookup[i].chain_buffer = pci_pool_alloc(
2762                     ioc->chain_dma_pool , GFP_KERNEL,
2763                     &ioc->chain_lookup[i].chain_buffer_dma);
2764                 if (!ioc->chain_lookup[i].chain_buffer) {
2765                         ioc->chain_depth = i;
2766                         goto chain_done;
2767                 }
2768                 total_sz += ioc->request_sz;
2769         }
2770 chain_done:
2771         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "chain pool depth"
2772             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2773             ioc->chain_depth, ioc->request_sz, ((ioc->chain_depth *
2774             ioc->request_sz))/1024));
2775
2776         /* initialize hi-priority queue smid's */
2777         ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth,
2778             sizeof(struct request_tracker), GFP_KERNEL);
2779         if (!ioc->hpr_lookup) {
2780                 printk(MPT2SAS_ERR_FMT "hpr_lookup: kcalloc failed\n",
2781                     ioc->name);
2782                 goto out;
2783         }
2784         ioc->hi_priority_smid = ioc->scsiio_depth + 1;
2785         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hi_priority(0x%p): "
2786             "depth(%d), start smid(%d)\n", ioc->name, ioc->hi_priority,
2787             ioc->hi_priority_depth, ioc->hi_priority_smid));
2788
2789         /* initialize internal queue smid's */
2790         ioc->internal_lookup = kcalloc(ioc->internal_depth,
2791             sizeof(struct request_tracker), GFP_KERNEL);
2792         if (!ioc->internal_lookup) {
2793                 printk(MPT2SAS_ERR_FMT "internal_lookup: kcalloc failed\n",
2794                     ioc->name);
2795                 goto out;
2796         }
2797         ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth;
2798         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "internal(0x%p): "
2799             "depth(%d), start smid(%d)\n", ioc->name, ioc->internal,
2800              ioc->internal_depth, ioc->internal_smid));
2801
2802         /* sense buffers, 4 byte align */
2803         sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE;
2804         ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
2805             0);
2806         if (!ioc->sense_dma_pool) {
2807                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_create failed\n",
2808                     ioc->name);
2809                 goto out;
2810         }
2811         ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
2812             &ioc->sense_dma);
2813         if (!ioc->sense) {
2814                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_alloc failed\n",
2815                     ioc->name);
2816                 goto out;
2817         }
2818         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2819             "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
2820             "(%d kB)\n", ioc->name, ioc->sense, ioc->scsiio_depth,
2821             SCSI_SENSE_BUFFERSIZE, sz/1024));
2822         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_dma(0x%llx)\n",
2823             ioc->name, (unsigned long long)ioc->sense_dma));
2824         total_sz += sz;
2825
2826         /* reply pool, 4 byte align */
2827         sz = ioc->reply_free_queue_depth * ioc->reply_sz;
2828         ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
2829             0);
2830         if (!ioc->reply_dma_pool) {
2831                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_create failed\n",
2832                     ioc->name);
2833                 goto out;
2834         }
2835         ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
2836             &ioc->reply_dma);
2837         if (!ioc->reply) {
2838                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_alloc failed\n",
2839                     ioc->name);
2840                 goto out;
2841         }
2842         ioc->reply_dma_min_address = (u32)(ioc->reply_dma);
2843         ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz;
2844         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply pool(0x%p): depth"
2845             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->reply,
2846             ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
2847         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_dma(0x%llx)\n",
2848             ioc->name, (unsigned long long)ioc->reply_dma));
2849         total_sz += sz;
2850
2851         /* reply free queue, 16 byte align */
2852         sz = ioc->reply_free_queue_depth * 4;
2853         ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
2854             ioc->pdev, sz, 16, 0);
2855         if (!ioc->reply_free_dma_pool) {
2856                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_create "
2857                     "failed\n", ioc->name);
2858                 goto out;
2859         }
2860         ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
2861             &ioc->reply_free_dma);
2862         if (!ioc->reply_free) {
2863                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_alloc "
2864                     "failed\n", ioc->name);
2865                 goto out;
2866         }
2867         memset(ioc->reply_free, 0, sz);
2868         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free pool(0x%p): "
2869             "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
2870             ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
2871         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_dma"
2872             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->reply_free_dma));
2873         total_sz += sz;
2874
2875         ioc->config_page_sz = 512;
2876         ioc->config_page = pci_alloc_consistent(ioc->pdev,
2877             ioc->config_page_sz, &ioc->config_page_dma);
2878         if (!ioc->config_page) {
2879                 printk(MPT2SAS_ERR_FMT "config page: pci_pool_alloc "
2880                     "failed\n", ioc->name);
2881                 goto out;
2882         }
2883         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config page(0x%p): size"
2884             "(%d)\n", ioc->name, ioc->config_page, ioc->config_page_sz));
2885         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config_page_dma"
2886             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->config_page_dma));
2887         total_sz += ioc->config_page_sz;
2888
2889         printk(MPT2SAS_INFO_FMT "Allocated physical memory: size(%d kB)\n",
2890             ioc->name, total_sz/1024);
2891         printk(MPT2SAS_INFO_FMT "Current Controller Queue Depth(%d), "
2892             "Max Controller Queue Depth(%d)\n",
2893             ioc->name, ioc->shost->can_queue, facts->RequestCredit);
2894         printk(MPT2SAS_INFO_FMT "Scatter Gather Elements per IO(%d)\n",
2895             ioc->name, ioc->shost->sg_tablesize);
2896         return 0;
2897
2898  out:
2899         return -ENOMEM;
2900 }
2901
2902
2903 /**
2904  * mpt2sas_base_get_iocstate - Get the current state of a MPT adapter.
2905  * @ioc: Pointer to MPT_ADAPTER structure
2906  * @cooked: Request raw or cooked IOC state
2907  *
2908  * Returns all IOC Doorbell register bits if cooked==0, else just the
2909  * Doorbell bits in MPI_IOC_STATE_MASK.
2910  */
2911 u32
2912 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked)
2913 {
2914         u32 s, sc;
2915
2916         s = readl(&ioc->chip->Doorbell);
2917         sc = s & MPI2_IOC_STATE_MASK;
2918         return cooked ? sc : s;
2919 }
2920
2921 /**
2922  * _base_wait_on_iocstate - waiting on a particular ioc state
2923  * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
2924  * @timeout: timeout in second
2925  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2926  *
2927  * Returns 0 for success, non-zero for failure.
2928  */
2929 static int
2930 _base_wait_on_iocstate(struct MPT2SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
2931     int sleep_flag)
2932 {
2933         u32 count, cntdn;
2934         u32 current_state;
2935
2936         count = 0;
2937         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2938         do {
2939                 current_state = mpt2sas_base_get_iocstate(ioc, 1);
2940                 if (current_state == ioc_state)
2941                         return 0;
2942                 if (count && current_state == MPI2_IOC_STATE_FAULT)
2943                         break;
2944                 if (sleep_flag == CAN_SLEEP)
2945                         msleep(1);
2946                 else
2947                         udelay(500);
2948                 count++;
2949         } while (--cntdn);
2950
2951         return current_state;
2952 }
2953
2954 /**
2955  * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
2956  * a write to the doorbell)
2957  * @ioc: per adapter object
2958  * @timeout: timeout in second
2959  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2960  *
2961  * Returns 0 for success, non-zero for failure.
2962  *
2963  * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
2964  */
2965 static int
2966 _base_wait_for_doorbell_int(struct MPT2SAS_ADAPTER *ioc, int timeout,
2967     int sleep_flag)
2968 {
2969         u32 cntdn, count;
2970         u32 int_status;
2971
2972         count = 0;
2973         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2974         do {
2975                 int_status = readl(&ioc->chip->HostInterruptStatus);
2976                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2977                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2978                             "successful count(%d), timeout(%d)\n", ioc->name,
2979                             __func__, count, timeout));
2980                         return 0;
2981                 }
2982                 if (sleep_flag == CAN_SLEEP)
2983                         msleep(1);
2984                 else
2985                         udelay(500);
2986                 count++;
2987         } while (--cntdn);
2988
2989         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2990             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2991         return -EFAULT;
2992 }
2993
2994 /**
2995  * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
2996  * @ioc: per adapter object
2997  * @timeout: timeout in second
2998  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2999  *
3000  * Returns 0 for success, non-zero for failure.
3001  *
3002  * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
3003  * doorbell.
3004  */
3005 static int
3006 _base_wait_for_doorbell_ack(struct MPT2SAS_ADAPTER *ioc, int timeout,
3007     int sleep_flag)
3008 {
3009         u32 cntdn, count;
3010         u32 int_status;
3011         u32 doorbell;
3012
3013         count = 0;
3014         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
3015         do {
3016                 int_status = readl(&ioc->chip->HostInterruptStatus);
3017                 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
3018                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
3019                             "successful count(%d), timeout(%d)\n", ioc->name,
3020                             __func__, count, timeout));
3021                         return 0;
3022                 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
3023                         doorbell = readl(&ioc->chip->Doorbell);
3024                         if ((doorbell & MPI2_IOC_STATE_MASK) ==
3025                             MPI2_IOC_STATE_FAULT) {
3026                                 mpt2sas_base_fault_info(ioc , doorbell);
3027                                 return -EFAULT;
3028                         }
3029                 } else if (int_status == 0xFFFFFFFF)
3030                         goto out;
3031
3032                 if (sleep_flag == CAN_SLEEP)
3033                         msleep(1);
3034                 else
3035                         udelay(500);
3036                 count++;
3037         } while (--cntdn);
3038
3039  out:
3040         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
3041             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
3042         return -EFAULT;
3043 }
3044
3045 /**
3046  * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
3047  * @ioc: per adapter object
3048  * @timeout: timeout in second
3049  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3050  *
3051  * Returns 0 for success, non-zero for failure.
3052  *
3053  */
3054 static int
3055 _base_wait_for_doorbell_not_used(struct MPT2SAS_ADAPTER *ioc, int timeout,
3056     int sleep_flag)
3057 {
3058         u32 cntdn, count;
3059         u32 doorbell_reg;
3060
3061         count = 0;
3062         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
3063         do {
3064                 doorbell_reg = readl(&ioc->chip->Doorbell);
3065                 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
3066                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
3067                             "successful count(%d), timeout(%d)\n", ioc->name,
3068                             __func__, count, timeout));
3069                         return 0;
3070                 }
3071                 if (sleep_flag == CAN_SLEEP)
3072                         msleep(1);
3073                 else
3074                         udelay(500);
3075                 count++;
3076         } while (--cntdn);
3077
3078         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
3079             "doorbell_reg(%x)!\n", ioc->name, __func__, count, doorbell_reg);
3080         return -EFAULT;
3081 }
3082
3083 /**
3084  * _base_send_ioc_reset - send doorbell reset
3085  * @ioc: per adapter object
3086  * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
3087  * @timeout: timeout in second
3088  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3089  *
3090  * Returns 0 for success, non-zero for failure.
3091  */
3092 static int
3093 _base_send_ioc_reset(struct MPT2SAS_ADAPTER *ioc, u8 reset_type, int timeout,
3094     int sleep_flag)
3095 {
3096         u32 ioc_state;
3097         int r = 0;
3098
3099         if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
3100                 printk(MPT2SAS_ERR_FMT "%s: unknown reset_type\n",
3101                     ioc->name, __func__);
3102                 return -EFAULT;
3103         }
3104
3105         if (!(ioc->facts.IOCCapabilities &
3106            MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
3107                 return -EFAULT;
3108
3109         printk(MPT2SAS_INFO_FMT "sending message unit reset !!\n", ioc->name);
3110
3111         writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
3112             &ioc->chip->Doorbell);
3113         if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
3114                 r = -EFAULT;
3115                 goto out;
3116         }
3117         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
3118             timeout, sleep_flag);
3119         if (ioc_state) {
3120                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3121                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3122                 r = -EFAULT;
3123                 goto out;
3124         }
3125  out:
3126         printk(MPT2SAS_INFO_FMT "message unit reset: %s\n",
3127             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
3128         return r;
3129 }
3130
3131 /**
3132  * _base_handshake_req_reply_wait - send request thru doorbell interface
3133  * @ioc: per adapter object
3134  * @request_bytes: request length
3135  * @request: pointer having request payload
3136  * @reply_bytes: reply length
3137  * @reply: pointer to reply payload
3138  * @timeout: timeout in second
3139  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3140  *
3141  * Returns 0 for success, non-zero for failure.
3142  */
3143 static int
3144 _base_handshake_req_reply_wait(struct MPT2SAS_ADAPTER *ioc, int request_bytes,
3145     u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
3146 {
3147         MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
3148         int i;
3149         u8 failed;
3150         u16 dummy;
3151         __le32 *mfp;
3152
3153         /* make sure doorbell is not in use */
3154         if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
3155                 printk(MPT2SAS_ERR_FMT "doorbell is in use "
3156                     " (line=%d)\n", ioc->name, __LINE__);
3157                 return -EFAULT;
3158         }
3159
3160         /* clear pending doorbell interrupts from previous state changes */
3161         if (readl(&ioc->chip->HostInterruptStatus) &
3162             MPI2_HIS_IOC2SYS_DB_STATUS)
3163                 writel(0, &ioc->chip->HostInterruptStatus);
3164
3165         /* send message to ioc */
3166         writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
3167             ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
3168             &ioc->chip->Doorbell);
3169
3170         if ((_base_wait_for_doorbell_int(ioc, 5, NO_SLEEP))) {
3171                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3172                    "int failed (line=%d)\n", ioc->name, __LINE__);
3173                 return -EFAULT;
3174         }
3175         writel(0, &ioc->chip->HostInterruptStatus);
3176
3177         if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
3178                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3179                     "ack failed (line=%d)\n", ioc->name, __LINE__);
3180                 return -EFAULT;
3181         }
3182
3183         /* send message 32-bits at a time */
3184         for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
3185                 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
3186                 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
3187                         failed = 1;
3188         }
3189
3190         if (failed) {
3191                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3192                     "sending request failed (line=%d)\n", ioc->name, __LINE__);
3193                 return -EFAULT;
3194         }
3195
3196         /* now wait for the reply */
3197         if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
3198                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3199                    "int failed (line=%d)\n", ioc->name, __LINE__);
3200                 return -EFAULT;
3201         }
3202
3203         /* read the first two 16-bits, it gives the total length of the reply */
3204         reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3205             & MPI2_DOORBELL_DATA_MASK);
3206         writel(0, &ioc->chip->HostInterruptStatus);
3207         if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3208                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3209                    "int failed (line=%d)\n", ioc->name, __LINE__);
3210                 return -EFAULT;
3211         }
3212         reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3213             & MPI2_DOORBELL_DATA_MASK);
3214         writel(0, &ioc->chip->HostInterruptStatus);
3215
3216         for (i = 2; i < default_reply->MsgLength * 2; i++)  {
3217                 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3218                         printk(MPT2SAS_ERR_FMT "doorbell "
3219                             "handshake int failed (line=%d)\n", ioc->name,
3220                             __LINE__);
3221                         return -EFAULT;
3222                 }
3223                 if (i >=  reply_bytes/2) /* overflow case */
3224                         dummy = readl(&ioc->chip->Doorbell);
3225                 else
3226                         reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3227                             & MPI2_DOORBELL_DATA_MASK);
3228                 writel(0, &ioc->chip->HostInterruptStatus);
3229         }
3230
3231         _base_wait_for_doorbell_int(ioc, 5, sleep_flag);
3232         if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
3233                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "doorbell is in use "
3234                     " (line=%d)\n", ioc->name, __LINE__));
3235         }
3236         writel(0, &ioc->chip->HostInterruptStatus);
3237
3238         if (ioc->logging_level & MPT_DEBUG_INIT) {
3239                 mfp = (__le32 *)reply;
3240                 printk(KERN_INFO "\toffset:data\n");
3241                 for (i = 0; i < reply_bytes/4; i++)
3242                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3243                             le32_to_cpu(mfp[i]));
3244         }
3245         return 0;
3246 }
3247
3248 /**
3249  * mpt2sas_base_sas_iounit_control - send sas iounit control to FW
3250  * @ioc: per adapter object
3251  * @mpi_reply: the reply payload from FW
3252  * @mpi_request: the request payload sent to FW
3253  *
3254  * The SAS IO Unit Control Request message allows the host to perform low-level
3255  * operations, such as resets on the PHYs of the IO Unit, also allows the host
3256  * to obtain the IOC assigned device handles for a device if it has other
3257  * identifying information about the device, in addition allows the host to
3258  * remove IOC resources associated with the device.
3259  *
3260  * Returns 0 for success, non-zero for failure.
3261  */
3262 int
3263 mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
3264     Mpi2SasIoUnitControlReply_t *mpi_reply,
3265     Mpi2SasIoUnitControlRequest_t *mpi_request)
3266 {
3267         u16 smid;
3268         u32 ioc_state;
3269         unsigned long timeleft;
3270         bool issue_reset = false;
3271         int rc;
3272         void *request;
3273         u16 wait_state_count;
3274
3275         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3276             __func__));
3277
3278         mutex_lock(&ioc->base_cmds.mutex);
3279
3280         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3281                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3282                     ioc->name, __func__);
3283                 rc = -EAGAIN;
3284                 goto out;
3285         }
3286
3287         wait_state_count = 0;
3288         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3289         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3290                 if (wait_state_count++ == 10) {
3291                         printk(MPT2SAS_ERR_FMT
3292                             "%s: failed due to ioc not operational\n",
3293                             ioc->name, __func__);
3294                         rc = -EFAULT;
3295                         goto out;
3296                 }
3297                 ssleep(1);
3298                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3299                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3300                     "operational state(count=%d)\n", ioc->name,
3301                     __func__, wait_state_count);
3302         }
3303
3304         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3305         if (!smid) {
3306                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3307                     ioc->name, __func__);
3308                 rc = -EAGAIN;
3309                 goto out;
3310         }
3311
3312         rc = 0;
3313         ioc->base_cmds.status = MPT2_CMD_PENDING;
3314         request = mpt2sas_base_get_msg_frame(ioc, smid);
3315         ioc->base_cmds.smid = smid;
3316         memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
3317         if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3318             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
3319                 ioc->ioc_link_reset_in_progress = 1;
3320         init_completion(&ioc->base_cmds.done);
3321         mpt2sas_base_put_smid_default(ioc, smid);
3322         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3323             msecs_to_jiffies(10000));
3324         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3325             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
3326             ioc->ioc_link_reset_in_progress)
3327                 ioc->ioc_link_reset_in_progress = 0;
3328         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3329                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3330                     ioc->name, __func__);
3331                 _debug_dump_mf(mpi_request,
3332                     sizeof(Mpi2SasIoUnitControlRequest_t)/4);
3333                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3334                         issue_reset = true;
3335                 goto issue_host_reset;
3336         }
3337         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3338                 memcpy(mpi_reply, ioc->base_cmds.reply,
3339                     sizeof(Mpi2SasIoUnitControlReply_t));
3340         else
3341                 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
3342         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3343         goto out;
3344
3345  issue_host_reset:
3346         if (issue_reset)
3347                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3348                     FORCE_BIG_HAMMER);
3349         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3350         rc = -EFAULT;
3351  out:
3352         mutex_unlock(&ioc->base_cmds.mutex);
3353         return rc;
3354 }
3355
3356
3357 /**
3358  * mpt2sas_base_scsi_enclosure_processor - sending request to sep device
3359  * @ioc: per adapter object
3360  * @mpi_reply: the reply payload from FW
3361  * @mpi_request: the request payload sent to FW
3362  *
3363  * The SCSI Enclosure Processor request message causes the IOC to
3364  * communicate with SES devices to control LED status signals.
3365  *
3366  * Returns 0 for success, non-zero for failure.
3367  */
3368 int
3369 mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
3370     Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
3371 {
3372         u16 smid;
3373         u32 ioc_state;
3374         unsigned long timeleft;
3375         bool issue_reset = false;
3376         int rc;
3377         void *request;
3378         u16 wait_state_count;
3379
3380         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3381             __func__));
3382
3383         mutex_lock(&ioc->base_cmds.mutex);
3384
3385         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3386                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3387                     ioc->name, __func__);
3388                 rc = -EAGAIN;
3389                 goto out;
3390         }
3391
3392         wait_state_count = 0;
3393         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3394         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3395                 if (wait_state_count++ == 10) {
3396                         printk(MPT2SAS_ERR_FMT
3397                             "%s: failed due to ioc not operational\n",
3398                             ioc->name, __func__);
3399                         rc = -EFAULT;
3400                         goto out;
3401                 }
3402                 ssleep(1);
3403                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3404                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3405                     "operational state(count=%d)\n", ioc->name,
3406                     __func__, wait_state_count);
3407         }
3408
3409         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3410         if (!smid) {
3411                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3412                     ioc->name, __func__);
3413                 rc = -EAGAIN;
3414                 goto out;
3415         }
3416
3417         rc = 0;
3418         ioc->base_cmds.status = MPT2_CMD_PENDING;
3419         request = mpt2sas_base_get_msg_frame(ioc, smid);
3420         ioc->base_cmds.smid = smid;
3421         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
3422         init_completion(&ioc->base_cmds.done);
3423         mpt2sas_base_put_smid_default(ioc, smid);
3424         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3425             msecs_to_jiffies(10000));
3426         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3427                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3428                     ioc->name, __func__);
3429                 _debug_dump_mf(mpi_request,
3430                     sizeof(Mpi2SepRequest_t)/4);
3431                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3432                         issue_reset = true;
3433                 goto issue_host_reset;
3434         }
3435         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3436                 memcpy(mpi_reply, ioc->base_cmds.reply,
3437                     sizeof(Mpi2SepReply_t));
3438         else
3439                 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
3440         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3441         goto out;
3442
3443  issue_host_reset:
3444         if (issue_reset)
3445                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3446                     FORCE_BIG_HAMMER);
3447         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3448         rc = -EFAULT;
3449  out:
3450         mutex_unlock(&ioc->base_cmds.mutex);
3451         return rc;
3452 }
3453
3454 /**
3455  * _base_get_port_facts - obtain port facts reply and save in ioc
3456  * @ioc: per adapter object
3457  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3458  *
3459  * Returns 0 for success, non-zero for failure.
3460  */
3461 static int
3462 _base_get_port_facts(struct MPT2SAS_ADAPTER *ioc, int port, int sleep_flag)
3463 {
3464         Mpi2PortFactsRequest_t mpi_request;
3465         Mpi2PortFactsReply_t mpi_reply;
3466         struct mpt2sas_port_facts *pfacts;
3467         int mpi_reply_sz, mpi_request_sz, r;
3468
3469         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3470             __func__));
3471
3472         mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
3473         mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
3474         memset(&mpi_request, 0, mpi_request_sz);
3475         mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
3476         mpi_request.PortNumber = port;
3477         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3478             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3479
3480         if (r != 0) {
3481                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3482                     ioc->name, __func__, r);
3483                 return r;
3484         }
3485
3486         pfacts = &ioc->pfacts[port];
3487         memset(pfacts, 0, sizeof(struct mpt2sas_port_facts));
3488         pfacts->PortNumber = mpi_reply.PortNumber;
3489         pfacts->VP_ID = mpi_reply.VP_ID;
3490         pfacts->VF_ID = mpi_reply.VF_ID;
3491         pfacts->MaxPostedCmdBuffers =
3492             le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
3493
3494         return 0;
3495 }
3496
3497 /**
3498  * _base_wait_for_iocstate - Wait until the card is in READY or OPERATIONAL
3499  * @ioc: per adapter object
3500  * @timeout:
3501  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3502  *
3503  * Returns 0 for success, non-zero for failure.
3504  */
3505 static int
3506 _base_wait_for_iocstate(struct MPT2SAS_ADAPTER *ioc, int timeout,
3507         int sleep_flag)
3508 {
3509         u32 ioc_state, doorbell;
3510         int rc;
3511
3512         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3513             __func__));
3514
3515         if (ioc->pci_error_recovery)
3516                 return 0;
3517
3518         doorbell = mpt2sas_base_get_iocstate(ioc, 0);
3519         ioc_state = doorbell & MPI2_IOC_STATE_MASK;
3520         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: ioc_state(0x%08x)\n",
3521             ioc->name, __func__, ioc_state));
3522
3523         switch (ioc_state) {
3524         case MPI2_IOC_STATE_READY:
3525         case MPI2_IOC_STATE_OPERATIONAL:
3526                 return 0;
3527         }
3528
3529         if (doorbell & MPI2_DOORBELL_USED) {
3530                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT
3531                     "unexpected doorbell activ!e\n", ioc->name));
3532                 goto issue_diag_reset;
3533         }
3534
3535         if (ioc_state == MPI2_IOC_STATE_FAULT) {
3536                 mpt2sas_base_fault_info(ioc, doorbell &
3537                     MPI2_DOORBELL_DATA_MASK);
3538                 goto issue_diag_reset;
3539         }
3540
3541         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
3542             timeout, sleep_flag);
3543         if (ioc_state) {
3544                 printk(MPT2SAS_ERR_FMT
3545                     "%s: failed going to ready state (ioc_state=0x%x)\n",
3546                     ioc->name, __func__, ioc_state);
3547                 return -EFAULT;
3548         }
3549
3550  issue_diag_reset:
3551         rc = _base_diag_reset(ioc, sleep_flag);
3552         return rc;
3553 }
3554
3555 /**
3556  * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
3557  * @ioc: per adapter object
3558  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3559  *
3560  * Returns 0 for success, non-zero for failure.
3561  */
3562 static int
3563 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3564 {
3565         Mpi2IOCFactsRequest_t mpi_request;
3566         Mpi2IOCFactsReply_t mpi_reply;
3567         struct mpt2sas_facts *facts;
3568         int mpi_reply_sz, mpi_request_sz, r;
3569
3570         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3571             __func__));
3572
3573         r = _base_wait_for_iocstate(ioc, 10, sleep_flag);
3574         if (r) {
3575                 printk(MPT2SAS_ERR_FMT "%s: failed getting to correct state\n",
3576                         ioc->name, __func__);
3577                 return r;
3578         }
3579
3580         mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
3581         mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
3582         memset(&mpi_request, 0, mpi_request_sz);
3583         mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
3584         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3585             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3586
3587         if (r != 0) {
3588                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3589                     ioc->name, __func__, r);
3590                 return r;
3591         }
3592
3593         facts = &ioc->facts;
3594         memset(facts, 0, sizeof(struct mpt2sas_facts));
3595         facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
3596         facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
3597         facts->VP_ID = mpi_reply.VP_ID;
3598         facts->VF_ID = mpi_reply.VF_ID;
3599         facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
3600         facts->MaxChainDepth = mpi_reply.MaxChainDepth;
3601         facts->WhoInit = mpi_reply.WhoInit;
3602         facts->NumberOfPorts = mpi_reply.NumberOfPorts;
3603         facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors;
3604         facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
3605         facts->MaxReplyDescriptorPostQueueDepth =
3606             le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
3607         facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
3608         facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
3609         if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
3610                 ioc->ir_firmware = 1;
3611         if ((facts->IOCCapabilities &
3612               MPI2_IOCFACTS_CAPABILITY_RDPQ_ARRAY_CAPABLE))
3613                 ioc->rdpq_array_capable = 1;
3614         facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
3615         facts->IOCRequestFrameSize =
3616             le16_to_cpu(mpi_reply.IOCRequestFrameSize);
3617         facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
3618         facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
3619         ioc->shost->max_id = -1;
3620         facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
3621         facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
3622         facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
3623         facts->HighPriorityCredit =
3624             le16_to_cpu(mpi_reply.HighPriorityCredit);
3625         facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
3626         facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
3627
3628         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hba queue depth(%d), "
3629             "max chains per io(%d)\n", ioc->name, facts->RequestCredit,
3630             facts->MaxChainDepth));
3631         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request frame size(%d), "
3632             "reply frame size(%d)\n", ioc->name,
3633             facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
3634         return 0;
3635 }
3636
3637 /**
3638  * _base_send_ioc_init - send ioc_init to firmware
3639  * @ioc: per adapter object
3640  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3641  *
3642  * Returns 0 for success, non-zero for failure.
3643  */
3644 static int
3645 _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3646 {
3647         Mpi2IOCInitRequest_t mpi_request;
3648         Mpi2IOCInitReply_t mpi_reply;
3649         int i, r = 0;
3650         struct timeval current_time;
3651         u16 ioc_status;
3652         u32 reply_post_free_array_sz = 0;
3653         Mpi2IOCInitRDPQArrayEntry *reply_post_free_array = NULL;
3654         dma_addr_t reply_post_free_array_dma;
3655
3656         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3657             __func__));
3658
3659         memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
3660         mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
3661         mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
3662         mpi_request.VF_ID = 0; /* TODO */
3663         mpi_request.VP_ID = 0;
3664         mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
3665         mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
3666
3667         if (_base_is_controller_msix_enabled(ioc))
3668                 mpi_request.HostMSIxVectors = ioc->reply_queue_count;
3669         mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
3670         mpi_request.ReplyDescriptorPostQueueDepth =
3671             cpu_to_le16(ioc->reply_post_queue_depth);
3672         mpi_request.ReplyFreeQueueDepth =
3673             cpu_to_le16(ioc->reply_free_queue_depth);
3674
3675         mpi_request.SenseBufferAddressHigh =
3676             cpu_to_le32((u64)ioc->sense_dma >> 32);
3677         mpi_request.SystemReplyAddressHigh =
3678             cpu_to_le32((u64)ioc->reply_dma >> 32);
3679         mpi_request.SystemRequestFrameBaseAddress =
3680             cpu_to_le64((u64)ioc->request_dma);
3681         mpi_request.ReplyFreeQueueAddress =
3682             cpu_to_le64((u64)ioc->reply_free_dma);
3683
3684         if (ioc->rdpq_array_enable) {
3685                 reply_post_free_array_sz = ioc->reply_queue_count *
3686                     sizeof(Mpi2IOCInitRDPQArrayEntry);
3687                 reply_post_free_array = pci_alloc_consistent(ioc->pdev,
3688                         reply_post_free_array_sz, &reply_post_free_array_dma);
3689                 if (!reply_post_free_array) {
3690                         printk(MPT2SAS_ERR_FMT
3691                         "reply_post_free_array: pci_alloc_consistent failed\n",
3692                         ioc->name);
3693                         r = -ENOMEM;
3694                         goto out;
3695                 }
3696                 memset(reply_post_free_array, 0, reply_post_free_array_sz);
3697                 for (i = 0; i < ioc->reply_queue_count; i++)
3698                         reply_post_free_array[i].RDPQBaseAddress =
3699                             cpu_to_le64(
3700                                 (u64)ioc->reply_post[i].reply_post_free_dma);
3701                 mpi_request.MsgFlags = MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE;
3702                 mpi_request.ReplyDescriptorPostQueueAddress =
3703                     cpu_to_le64((u64)reply_post_free_array_dma);
3704         } else {
3705                 mpi_request.ReplyDescriptorPostQueueAddress =
3706                     cpu_to_le64((u64)ioc->reply_post[0].reply_post_free_dma);
3707         }
3708
3709         /* This time stamp specifies number of milliseconds
3710          * since epoch ~ midnight January 1, 1970.
3711          */
3712         do_gettimeofday(&current_time);
3713         mpi_request.TimeStamp = cpu_to_le64((u64)current_time.tv_sec * 1000 +
3714             (current_time.tv_usec / 1000));
3715
3716         if (ioc->logging_level & MPT_DEBUG_INIT) {
3717                 __le32 *mfp;
3718                 int i;
3719
3720                 mfp = (__le32 *)&mpi_request;
3721                 printk(KERN_INFO "\toffset:data\n");
3722                 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
3723                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3724                             le32_to_cpu(mfp[i]));
3725         }
3726
3727         r = _base_handshake_req_reply_wait(ioc,
3728             sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
3729             sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
3730             sleep_flag);
3731
3732         if (r != 0) {
3733                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3734                     ioc->name, __func__, r);
3735                 goto out;
3736         }
3737
3738         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
3739         if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
3740             mpi_reply.IOCLogInfo) {
3741                 printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
3742                 r = -EIO;
3743         }
3744
3745 out:
3746         if (reply_post_free_array)
3747                 pci_free_consistent(ioc->pdev, reply_post_free_array_sz,
3748                                     reply_post_free_array,
3749                                     reply_post_free_array_dma);
3750         return r;
3751 }
3752
3753 /**
3754  * mpt2sas_port_enable_done - command completion routine for port enable
3755  * @ioc: per adapter object
3756  * @smid: system request message index
3757  * @msix_index: MSIX table index supplied by the OS
3758  * @reply: reply message frame(lower 32bit addr)
3759  *
3760  * Return 1 meaning mf should be freed from _base_interrupt
3761  *        0 means the mf is freed from this function.
3762  */
3763 u8
3764 mpt2sas_port_enable_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3765         u32 reply)
3766 {
3767         MPI2DefaultReply_t *mpi_reply;
3768         u16 ioc_status;
3769
3770         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
3771         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
3772                 return 1;
3773
3774         if (ioc->port_enable_cmds.status == MPT2_CMD_NOT_USED)
3775                 return 1;
3776
3777         ioc->port_enable_cmds.status |= MPT2_CMD_COMPLETE;
3778         if (mpi_reply) {
3779                 ioc->port_enable_cmds.status |= MPT2_CMD_REPLY_VALID;
3780                 memcpy(ioc->port_enable_cmds.reply, mpi_reply,
3781                     mpi_reply->MsgLength*4);
3782         }
3783         ioc->port_enable_cmds.status &= ~MPT2_CMD_PENDING;
3784
3785         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3786
3787         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
3788                 ioc->port_enable_failed = 1;
3789
3790         if (ioc->is_driver_loading) {
3791                 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
3792                         mpt2sas_port_enable_complete(ioc);
3793                         return 1;
3794                 } else {
3795                         ioc->start_scan_failed = ioc_status;
3796                         ioc->start_scan = 0;
3797                         return 1;
3798                 }
3799         }
3800         complete(&ioc->port_enable_cmds.done);
3801         return 1;
3802 }
3803
3804
3805 /**
3806  * _base_send_port_enable - send port_enable(discovery stuff) to firmware
3807  * @ioc: per adapter object
3808  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3809  *
3810  * Returns 0 for success, non-zero for failure.
3811  */
3812 static int
3813 _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3814 {
3815         Mpi2PortEnableRequest_t *mpi_request;
3816         Mpi2PortEnableReply_t *mpi_reply;
3817         unsigned long timeleft;
3818         int r = 0;
3819         u16 smid;
3820         u16 ioc_status;
3821
3822         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3823
3824         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3825                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3826                     ioc->name, __func__);
3827                 return -EAGAIN;
3828         }
3829
3830         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3831         if (!smid) {
3832                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3833                     ioc->name, __func__);
3834                 return -EAGAIN;
3835         }
3836
3837         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3838         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3839         ioc->port_enable_cmds.smid = smid;
3840         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3841         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3842
3843         init_completion(&ioc->port_enable_cmds.done);
3844         mpt2sas_base_put_smid_default(ioc, smid);
3845         timeleft = wait_for_completion_timeout(&ioc->port_enable_cmds.done,
3846             300*HZ);
3847         if (!(ioc->port_enable_cmds.status & MPT2_CMD_COMPLETE)) {
3848                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3849                     ioc->name, __func__);
3850                 _debug_dump_mf(mpi_request,
3851                     sizeof(Mpi2PortEnableRequest_t)/4);
3852                 if (ioc->port_enable_cmds.status & MPT2_CMD_RESET)
3853                         r = -EFAULT;
3854                 else
3855                         r = -ETIME;
3856                 goto out;
3857         }
3858         mpi_reply = ioc->port_enable_cmds.reply;
3859
3860         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3861         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
3862                 printk(MPT2SAS_ERR_FMT "%s: failed with (ioc_status=0x%08x)\n",
3863                     ioc->name, __func__, ioc_status);
3864                 r = -EFAULT;
3865                 goto out;
3866         }
3867  out:
3868         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
3869         printk(MPT2SAS_INFO_FMT "port enable: %s\n", ioc->name, ((r == 0) ?
3870             "SUCCESS" : "FAILED"));
3871         return r;
3872 }
3873
3874 /**
3875  * mpt2sas_port_enable - initiate firmware discovery (don't wait for reply)
3876  * @ioc: per adapter object
3877  *
3878  * Returns 0 for success, non-zero for failure.
3879  */
3880 int
3881 mpt2sas_port_enable(struct MPT2SAS_ADAPTER *ioc)
3882 {
3883         Mpi2PortEnableRequest_t *mpi_request;
3884         u16 smid;
3885
3886         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3887
3888         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3889                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3890                     ioc->name, __func__);
3891                 return -EAGAIN;
3892         }
3893
3894         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3895         if (!smid) {
3896                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3897                     ioc->name, __func__);
3898                 return -EAGAIN;
3899         }
3900
3901         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3902         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3903         ioc->port_enable_cmds.smid = smid;
3904         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3905         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3906
3907         mpt2sas_base_put_smid_default(ioc, smid);
3908         return 0;
3909 }
3910
3911 /**
3912  * _base_determine_wait_on_discovery - desposition
3913  * @ioc: per adapter object
3914  *
3915  * Decide whether to wait on discovery to complete. Used to either
3916  * locate boot device, or report volumes ahead of physical devices.
3917  *
3918  * Returns 1 for wait, 0 for don't wait
3919  */
3920 static int
3921 _base_determine_wait_on_discovery(struct MPT2SAS_ADAPTER *ioc)
3922 {
3923         /* We wait for discovery to complete if IR firmware is loaded.
3924          * The sas topology events arrive before PD events, so we need time to
3925          * turn on the bit in ioc->pd_handles to indicate PD
3926          * Also, it maybe required to report Volumes ahead of physical
3927          * devices when MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING is set.
3928          */
3929         if (ioc->ir_firmware)
3930                 return 1;
3931
3932         /* if no Bios, then we don't need to wait */
3933         if (!ioc->bios_pg3.BiosVersion)
3934                 return 0;
3935
3936         /* Bios is present, then we drop down here.
3937          *
3938          * If there any entries in the Bios Page 2, then we wait
3939          * for discovery to complete.
3940          */
3941
3942         /* Current Boot Device */
3943         if ((ioc->bios_pg2.CurrentBootDeviceForm &
3944             MPI2_BIOSPAGE2_FORM_MASK) ==
3945             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3946         /* Request Boot Device */
3947            (ioc->bios_pg2.ReqBootDeviceForm &
3948             MPI2_BIOSPAGE2_FORM_MASK) ==
3949             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3950         /* Alternate Request Boot Device */
3951            (ioc->bios_pg2.ReqAltBootDeviceForm &
3952             MPI2_BIOSPAGE2_FORM_MASK) ==
3953             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED)
3954                 return 0;
3955
3956         return 1;
3957 }
3958
3959
3960 /**
3961  * _base_unmask_events - turn on notification for this event
3962  * @ioc: per adapter object
3963  * @event: firmware event
3964  *
3965  * The mask is stored in ioc->event_masks.
3966  */
3967 static void
3968 _base_unmask_events(struct MPT2SAS_ADAPTER *ioc, u16 event)
3969 {
3970         u32 desired_event;
3971
3972         if (event >= 128)
3973                 return;
3974
3975         desired_event = (1 << (event % 32));
3976
3977         if (event < 32)
3978                 ioc->event_masks[0] &= ~desired_event;
3979         else if (event < 64)
3980                 ioc->event_masks[1] &= ~desired_event;
3981         else if (event < 96)
3982                 ioc->event_masks[2] &= ~desired_event;
3983         else if (event < 128)
3984                 ioc->event_masks[3] &= ~desired_event;
3985 }
3986
3987 /**
3988  * _base_event_notification - send event notification
3989  * @ioc: per adapter object
3990  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3991  *
3992  * Returns 0 for success, non-zero for failure.
3993  */
3994 static int
3995 _base_event_notification(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3996 {
3997         Mpi2EventNotificationRequest_t *mpi_request;
3998         unsigned long timeleft;
3999         u16 smid;
4000         int r = 0;
4001         int i;
4002
4003         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4004             __func__));
4005
4006         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
4007                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
4008                     ioc->name, __func__);
4009                 return -EAGAIN;
4010         }
4011
4012         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
4013         if (!smid) {
4014                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
4015                     ioc->name, __func__);
4016                 return -EAGAIN;
4017         }
4018         ioc->base_cmds.status = MPT2_CMD_PENDING;
4019         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
4020         ioc->base_cmds.smid = smid;
4021         memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
4022         mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
4023         mpi_request->VF_ID = 0; /* TODO */
4024         mpi_request->VP_ID = 0;
4025         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4026                 mpi_request->EventMasks[i] =
4027                     cpu_to_le32(ioc->event_masks[i]);
4028         init_completion(&ioc->base_cmds.done);
4029         mpt2sas_base_put_smid_default(ioc, smid);
4030         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
4031         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
4032                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
4033                     ioc->name, __func__);
4034                 _debug_dump_mf(mpi_request,
4035                     sizeof(Mpi2EventNotificationRequest_t)/4);
4036                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
4037                         r = -EFAULT;
4038                 else
4039                         r = -ETIME;
4040         } else
4041                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: complete\n",
4042                     ioc->name, __func__));
4043         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
4044         return r;
4045 }
4046
4047 /**
4048  * mpt2sas_base_validate_event_type - validating event types
4049  * @ioc: per adapter object
4050  * @event: firmware event
4051  *
4052  * This will turn on firmware event notification when application
4053  * ask for that event. We don't mask events that are already enabled.
4054  */
4055 void
4056 mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type)
4057 {
4058         int i, j;
4059         u32 event_mask, desired_event;
4060         u8 send_update_to_fw;
4061
4062         for (i = 0, send_update_to_fw = 0; i <
4063             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
4064                 event_mask = ~event_type[i];
4065                 desired_event = 1;
4066                 for (j = 0; j < 32; j++) {
4067                         if (!(event_mask & desired_event) &&
4068                             (ioc->event_masks[i] & desired_event)) {
4069                                 ioc->event_masks[i] &= ~desired_event;
4070                                 send_update_to_fw = 1;
4071                         }
4072                         desired_event = (desired_event << 1);
4073                 }
4074         }
4075
4076         if (!send_update_to_fw)
4077                 return;
4078
4079         mutex_lock(&ioc->base_cmds.mutex);
4080         _base_event_notification(ioc, CAN_SLEEP);
4081         mutex_unlock(&ioc->base_cmds.mutex);
4082 }
4083
4084 /**
4085  * _base_diag_reset - the "big hammer" start of day reset
4086  * @ioc: per adapter object
4087  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4088  *
4089  * Returns 0 for success, non-zero for failure.
4090  */
4091 static int
4092 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4093 {
4094         u32 host_diagnostic;
4095         u32 ioc_state;
4096         u32 count;
4097         u32 hcb_size;
4098
4099         printk(MPT2SAS_INFO_FMT "sending diag reset !!\n", ioc->name);
4100         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "clear interrupts\n",
4101             ioc->name));
4102
4103         count = 0;
4104         do {
4105                 /* Write magic sequence to WriteSequence register
4106                  * Loop until in diagnostic mode
4107                  */
4108                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "write magic "
4109                     "sequence\n", ioc->name));
4110                 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
4111                 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
4112                 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
4113                 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
4114                 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
4115                 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
4116                 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
4117
4118                 /* wait 100 msec */
4119                 if (sleep_flag == CAN_SLEEP)
4120                         msleep(100);
4121                 else
4122                         mdelay(100);
4123
4124                 if (count++ > 20)
4125                         goto out;
4126
4127                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
4128                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "wrote magic "
4129                     "sequence: count(%d), host_diagnostic(0x%08x)\n",
4130                     ioc->name, count, host_diagnostic));
4131
4132         } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
4133
4134         hcb_size = readl(&ioc->chip->HCBSize);
4135
4136         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "diag reset: issued\n",
4137             ioc->name));
4138         writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
4139              &ioc->chip->HostDiagnostic);
4140
4141         /* This delay allows the chip PCIe hardware time to finish reset tasks*/
4142         if (sleep_flag == CAN_SLEEP)
4143                 msleep(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000);
4144         else
4145                 mdelay(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000);
4146
4147         /* Approximately 300 second max wait */
4148         for (count = 0; count < (300000000 /
4149             MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC); count++) {
4150
4151                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
4152
4153                 if (host_diagnostic == 0xFFFFFFFF)
4154                         goto out;
4155                 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
4156                         break;
4157
4158                 /* Wait to pass the second read delay window */
4159                 if (sleep_flag == CAN_SLEEP)
4160                         msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC
4161                                /1000);
4162                 else
4163                         mdelay(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC
4164                                /1000);
4165         }
4166
4167         if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
4168
4169                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter "
4170                     "assuming the HCB Address points to good F/W\n",
4171                     ioc->name));
4172                 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
4173                 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
4174                 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
4175
4176                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT
4177                     "re-enable the HCDW\n", ioc->name));
4178                 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
4179                     &ioc->chip->HCBSize);
4180         }
4181
4182         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter\n",
4183             ioc->name));
4184         writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
4185             &ioc->chip->HostDiagnostic);
4186
4187         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "disable writes to the "
4188             "diagnostic register\n", ioc->name));
4189         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
4190
4191         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "Wait for FW to go to the "
4192             "READY state\n", ioc->name));
4193         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
4194             sleep_flag);
4195         if (ioc_state) {
4196                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
4197                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
4198                 goto out;
4199         }
4200
4201         printk(MPT2SAS_INFO_FMT "diag reset: SUCCESS\n", ioc->name);
4202         return 0;
4203
4204  out:
4205         printk(MPT2SAS_ERR_FMT "diag reset: FAILED\n", ioc->name);
4206         return -EFAULT;
4207 }
4208
4209 /**
4210  * _base_make_ioc_ready - put controller in READY state
4211  * @ioc: per adapter object
4212  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4213  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4214  *
4215  * Returns 0 for success, non-zero for failure.
4216  */
4217 static int
4218 _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4219     enum reset_type type)
4220 {
4221         u32 ioc_state;
4222         int rc;
4223
4224         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4225             __func__));
4226
4227         if (ioc->pci_error_recovery)
4228                 return 0;
4229
4230         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4231         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: ioc_state(0x%08x)\n",
4232             ioc->name, __func__, ioc_state));
4233
4234         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
4235                 return 0;
4236
4237         if (ioc_state & MPI2_DOORBELL_USED) {
4238                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "unexpected doorbell "
4239                     "active!\n", ioc->name));
4240                 goto issue_diag_reset;
4241         }
4242
4243         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
4244                 mpt2sas_base_fault_info(ioc, ioc_state &
4245                     MPI2_DOORBELL_DATA_MASK);
4246                 goto issue_diag_reset;
4247         }
4248
4249         if (type == FORCE_BIG_HAMMER)
4250                 goto issue_diag_reset;
4251
4252         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
4253                 if (!(_base_send_ioc_reset(ioc,
4254                     MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP))) {
4255                         ioc->ioc_reset_count++;
4256                         return 0;
4257         }
4258
4259  issue_diag_reset:
4260         rc = _base_diag_reset(ioc, CAN_SLEEP);
4261         ioc->ioc_reset_count++;
4262         return rc;
4263 }
4264
4265 /**
4266  * _base_make_ioc_operational - put controller in OPERATIONAL state
4267  * @ioc: per adapter object
4268  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4269  *
4270  * Returns 0 for success, non-zero for failure.
4271  */
4272 static int
4273 _base_make_ioc_operational(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4274 {
4275         int r, i;
4276         unsigned long   flags;
4277         u32 reply_address;
4278         u16 smid;
4279         struct _tr_list *delayed_tr, *delayed_tr_next;
4280         u8 hide_flag;
4281         struct adapter_reply_queue *reply_q;
4282         long reply_post_free;
4283         u32 reply_post_free_sz, index = 0;
4284
4285         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4286             __func__));
4287
4288         /* clean the delayed target reset list */
4289         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4290             &ioc->delayed_tr_list, list) {
4291                 list_del(&delayed_tr->list);
4292                 kfree(delayed_tr);
4293         }
4294
4295         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4296             &ioc->delayed_tr_volume_list, list) {
4297                 list_del(&delayed_tr->list);
4298                 kfree(delayed_tr);
4299         }
4300
4301         /* initialize the scsi lookup free list */
4302         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4303         INIT_LIST_HEAD(&ioc->free_list);
4304         smid = 1;
4305         for (i = 0; i < ioc->scsiio_depth; i++, smid++) {
4306                 INIT_LIST_HEAD(&ioc->scsi_lookup[i].chain_list);
4307                 ioc->scsi_lookup[i].cb_idx = 0xFF;
4308                 ioc->scsi_lookup[i].smid = smid;
4309                 ioc->scsi_lookup[i].scmd = NULL;
4310                 ioc->scsi_lookup[i].direct_io = 0;
4311                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
4312                     &ioc->free_list);
4313         }
4314
4315         /* hi-priority queue */
4316         INIT_LIST_HEAD(&ioc->hpr_free_list);
4317         smid = ioc->hi_priority_smid;
4318         for (i = 0; i < ioc->hi_priority_depth; i++, smid++) {
4319                 ioc->hpr_lookup[i].cb_idx = 0xFF;
4320                 ioc->hpr_lookup[i].smid = smid;
4321                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
4322                     &ioc->hpr_free_list);
4323         }
4324
4325         /* internal queue */
4326         INIT_LIST_HEAD(&ioc->internal_free_list);
4327         smid = ioc->internal_smid;
4328         for (i = 0; i < ioc->internal_depth; i++, smid++) {
4329                 ioc->internal_lookup[i].cb_idx = 0xFF;
4330                 ioc->internal_lookup[i].smid = smid;
4331                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
4332                     &ioc->internal_free_list);
4333         }
4334
4335         /* chain pool */
4336         INIT_LIST_HEAD(&ioc->free_chain_list);
4337         for (i = 0; i < ioc->chain_depth; i++)
4338                 list_add_tail(&ioc->chain_lookup[i].tracker_list,
4339                     &ioc->free_chain_list);
4340
4341         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4342
4343         /* initialize Reply Free Queue */
4344         for (i = 0, reply_address = (u32)ioc->reply_dma ;
4345             i < ioc->reply_free_queue_depth ; i++, reply_address +=
4346             ioc->reply_sz)
4347                 ioc->reply_free[i] = cpu_to_le32(reply_address);
4348
4349         /* initialize reply queues */
4350         if (ioc->is_driver_loading)
4351                 _base_assign_reply_queues(ioc);
4352
4353         /* initialize Reply Post Free Queue */
4354         reply_post_free_sz = ioc->reply_post_queue_depth *
4355             sizeof(Mpi2DefaultReplyDescriptor_t);
4356         reply_post_free = (long)ioc->reply_post[index].reply_post_free;
4357         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4358                 reply_q->reply_post_host_index = 0;
4359                 reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *)
4360                     reply_post_free;
4361                 for (i = 0; i < ioc->reply_post_queue_depth; i++)
4362                         reply_q->reply_post_free[i].Words =
4363                                                      cpu_to_le64(ULLONG_MAX);
4364                 if (!_base_is_controller_msix_enabled(ioc))
4365                         goto skip_init_reply_post_free_queue;
4366                 /*
4367                  * If RDPQ is enabled, switch to the next allocation.
4368                  * Otherwise advance within the contiguous region.
4369                  */
4370                 if (ioc->rdpq_array_enable)
4371                         reply_post_free = (long)
4372                             ioc->reply_post[++index].reply_post_free;
4373                 else
4374                         reply_post_free += reply_post_free_sz;
4375         }
4376  skip_init_reply_post_free_queue:
4377
4378         r = _base_send_ioc_init(ioc, sleep_flag);
4379         if (r)
4380                 return r;
4381
4382         /* initialize reply free host index */
4383         ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
4384         writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
4385
4386         /* initialize reply post host index */
4387         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4388                 writel(reply_q->msix_index << MPI2_RPHI_MSIX_INDEX_SHIFT,
4389                     &ioc->chip->ReplyPostHostIndex);
4390                 if (!_base_is_controller_msix_enabled(ioc))
4391                         goto skip_init_reply_post_host_index;
4392         }
4393
4394  skip_init_reply_post_host_index:
4395
4396         _base_unmask_interrupts(ioc);
4397
4398         r = _base_event_notification(ioc, sleep_flag);
4399         if (r)
4400                 return r;
4401
4402         if (sleep_flag == CAN_SLEEP)
4403                 _base_static_config_pages(ioc);
4404
4405
4406         if (ioc->is_driver_loading) {
4407                 if (ioc->is_warpdrive && ioc->manu_pg10.OEMIdentifier
4408                     == 0x80) {
4409                         hide_flag = (u8) (
4410                             le32_to_cpu(ioc->manu_pg10.OEMSpecificFlags0) &
4411                             MFG_PAGE10_HIDE_SSDS_MASK);
4412                         if (hide_flag != MFG_PAGE10_HIDE_SSDS_MASK)
4413                                 ioc->mfg_pg10_hide_flag = hide_flag;
4414                 }
4415                 ioc->wait_for_discovery_to_complete =
4416                     _base_determine_wait_on_discovery(ioc);
4417                 return r; /* scan_start and scan_finished support */
4418         }
4419         r = _base_send_port_enable(ioc, sleep_flag);
4420         if (r)
4421                 return r;
4422
4423         return r;
4424 }
4425
4426 /**
4427  * mpt2sas_base_free_resources - free resources controller resources (io/irq/memap)
4428  * @ioc: per adapter object
4429  *
4430  * Return nothing.
4431  */
4432 void
4433 mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
4434 {
4435         struct pci_dev *pdev = ioc->pdev;
4436
4437         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4438             __func__));
4439
4440         if (ioc->chip_phys && ioc->chip) {
4441                 _base_mask_interrupts(ioc);
4442                 ioc->shost_recovery = 1;
4443                 _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4444                 ioc->shost_recovery = 0;
4445         }
4446
4447         _base_free_irq(ioc);
4448         _base_disable_msix(ioc);
4449
4450         if (ioc->chip_phys && ioc->chip)
4451                 iounmap(ioc->chip);
4452         ioc->chip_phys = 0;
4453
4454         if (pci_is_enabled(pdev)) {
4455                 pci_release_selected_regions(ioc->pdev, ioc->bars);
4456                 pci_disable_pcie_error_reporting(pdev);
4457                 pci_disable_device(pdev);
4458         }
4459         return;
4460 }
4461
4462 /**
4463  * mpt2sas_base_attach - attach controller instance
4464  * @ioc: per adapter object
4465  *
4466  * Returns 0 for success, non-zero for failure.
4467  */
4468 int
4469 mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
4470 {
4471         int r, i;
4472         int cpu_id, last_cpu_id = 0;
4473
4474         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4475             __func__));
4476
4477         /* setup cpu_msix_table */
4478         ioc->cpu_count = num_online_cpus();
4479         for_each_online_cpu(cpu_id)
4480                 last_cpu_id = cpu_id;
4481         ioc->cpu_msix_table_sz = last_cpu_id + 1;
4482         ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL);
4483         ioc->reply_queue_count = 1;
4484         if (!ioc->cpu_msix_table) {
4485                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation for "
4486                     "cpu_msix_table failed!!!\n", ioc->name));
4487                 r = -ENOMEM;
4488                 goto out_free_resources;
4489         }
4490
4491         if (ioc->is_warpdrive) {
4492                 ioc->reply_post_host_index = kcalloc(ioc->cpu_msix_table_sz,
4493                     sizeof(resource_size_t *), GFP_KERNEL);
4494                 if (!ioc->reply_post_host_index) {
4495                         dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation "
4496                                 "for cpu_msix_table failed!!!\n", ioc->name));
4497                         r = -ENOMEM;
4498                         goto out_free_resources;
4499                 }
4500         }
4501
4502         ioc->rdpq_array_enable_assigned = 0;
4503         ioc->dma_mask = 0;
4504         r = mpt2sas_base_map_resources(ioc);
4505         if (r)
4506                 goto out_free_resources;
4507
4508         if (ioc->is_warpdrive) {
4509                 ioc->reply_post_host_index[0] = (resource_size_t __iomem *)
4510                     &ioc->chip->ReplyPostHostIndex;
4511
4512                 for (i = 1; i < ioc->cpu_msix_table_sz; i++)
4513                         ioc->reply_post_host_index[i] =
4514                         (resource_size_t __iomem *)
4515                         ((u8 __iomem *)&ioc->chip->Doorbell + (0x4000 + ((i - 1)
4516                         * 4)));
4517         }
4518
4519         pci_set_drvdata(ioc->pdev, ioc->shost);
4520         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
4521         if (r)
4522                 goto out_free_resources;
4523
4524         r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4525         if (r)
4526                 goto out_free_resources;
4527
4528         ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
4529             sizeof(struct mpt2sas_port_facts), GFP_KERNEL);
4530         if (!ioc->pfacts) {
4531                 r = -ENOMEM;
4532                 goto out_free_resources;
4533         }
4534
4535         for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
4536                 r = _base_get_port_facts(ioc, i, CAN_SLEEP);
4537                 if (r)
4538                         goto out_free_resources;
4539         }
4540
4541         r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
4542         if (r)
4543                 goto out_free_resources;
4544
4545         init_waitqueue_head(&ioc->reset_wq);
4546         /* allocate memory pd handle bitmask list */
4547         ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8);
4548         if (ioc->facts.MaxDevHandle % 8)
4549                 ioc->pd_handles_sz++;
4550         ioc->pd_handles = kzalloc(ioc->pd_handles_sz,
4551             GFP_KERNEL);
4552         if (!ioc->pd_handles) {
4553                 r = -ENOMEM;
4554                 goto out_free_resources;
4555         }
4556         ioc->blocking_handles = kzalloc(ioc->pd_handles_sz,
4557             GFP_KERNEL);
4558         if (!ioc->blocking_handles) {
4559                 r = -ENOMEM;
4560                 goto out_free_resources;
4561         }
4562         ioc->fwfault_debug = mpt2sas_fwfault_debug;
4563
4564         /* base internal command bits */
4565         mutex_init(&ioc->base_cmds.mutex);
4566         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4567         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
4568
4569         /* port_enable command bits */
4570         ioc->port_enable_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4571         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
4572
4573         /* transport internal command bits */
4574         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4575         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
4576         mutex_init(&ioc->transport_cmds.mutex);
4577
4578         /* scsih internal command bits */
4579         ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4580         ioc->scsih_cmds.status = MPT2_CMD_NOT_USED;
4581         mutex_init(&ioc->scsih_cmds.mutex);
4582
4583         /* task management internal command bits */
4584         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4585         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
4586         mutex_init(&ioc->tm_cmds.mutex);
4587
4588         /* config page internal command bits */
4589         ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4590         ioc->config_cmds.status = MPT2_CMD_NOT_USED;
4591         mutex_init(&ioc->config_cmds.mutex);
4592
4593         /* ctl module internal command bits */
4594         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4595         ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
4596         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
4597         mutex_init(&ioc->ctl_cmds.mutex);
4598
4599         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4600             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4601             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply ||
4602             !ioc->ctl_cmds.sense) {
4603                 r = -ENOMEM;
4604                 goto out_free_resources;
4605         }
4606
4607         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4608             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4609             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply) {
4610                 r = -ENOMEM;
4611                 goto out_free_resources;
4612         }
4613
4614         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4615                 ioc->event_masks[i] = -1;
4616
4617         /* here we enable the events we care about */
4618         _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
4619         _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
4620         _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
4621         _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4622         _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
4623         _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
4624         _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
4625         _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
4626         _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
4627         _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
4628         _base_unmask_events(ioc, MPI2_EVENT_TEMP_THRESHOLD);
4629         r = _base_make_ioc_operational(ioc, CAN_SLEEP);
4630         if (r)
4631                 goto out_free_resources;
4632
4633         ioc->non_operational_loop = 0;
4634
4635         return 0;
4636
4637  out_free_resources:
4638
4639         ioc->remove_host = 1;
4640         mpt2sas_base_free_resources(ioc);
4641         _base_release_memory_pools(ioc);
4642         pci_set_drvdata(ioc->pdev, NULL);
4643         kfree(ioc->cpu_msix_table);
4644         if (ioc->is_warpdrive)
4645                 kfree(ioc->reply_post_host_index);
4646         kfree(ioc->pd_handles);
4647         kfree(ioc->blocking_handles);
4648         kfree(ioc->tm_cmds.reply);
4649         kfree(ioc->transport_cmds.reply);
4650         kfree(ioc->scsih_cmds.reply);
4651         kfree(ioc->config_cmds.reply);
4652         kfree(ioc->base_cmds.reply);
4653         kfree(ioc->port_enable_cmds.reply);
4654         kfree(ioc->ctl_cmds.reply);
4655         kfree(ioc->ctl_cmds.sense);
4656         kfree(ioc->pfacts);
4657         ioc->ctl_cmds.reply = NULL;
4658         ioc->base_cmds.reply = NULL;
4659         ioc->tm_cmds.reply = NULL;
4660         ioc->scsih_cmds.reply = NULL;
4661         ioc->transport_cmds.reply = NULL;
4662         ioc->config_cmds.reply = NULL;
4663         ioc->pfacts = NULL;
4664         return r;
4665 }
4666
4667
4668 /**
4669  * mpt2sas_base_detach - remove controller instance
4670  * @ioc: per adapter object
4671  *
4672  * Return nothing.
4673  */
4674 void
4675 mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc)
4676 {
4677
4678         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4679             __func__));
4680
4681         mpt2sas_base_stop_watchdog(ioc);
4682         mpt2sas_base_free_resources(ioc);
4683         _base_release_memory_pools(ioc);
4684         pci_set_drvdata(ioc->pdev, NULL);
4685         kfree(ioc->cpu_msix_table);
4686         if (ioc->is_warpdrive)
4687                 kfree(ioc->reply_post_host_index);
4688         kfree(ioc->pd_handles);
4689         kfree(ioc->blocking_handles);
4690         kfree(ioc->pfacts);
4691         kfree(ioc->ctl_cmds.reply);
4692         kfree(ioc->ctl_cmds.sense);
4693         kfree(ioc->base_cmds.reply);
4694         kfree(ioc->port_enable_cmds.reply);
4695         kfree(ioc->tm_cmds.reply);
4696         kfree(ioc->transport_cmds.reply);
4697         kfree(ioc->scsih_cmds.reply);
4698         kfree(ioc->config_cmds.reply);
4699 }
4700
4701 /**
4702  * _base_reset_handler - reset callback handler (for base)
4703  * @ioc: per adapter object
4704  * @reset_phase: phase
4705  *
4706  * The handler for doing any required cleanup or initialization.
4707  *
4708  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
4709  * MPT2_IOC_DONE_RESET
4710  *
4711  * Return nothing.
4712  */
4713 static void
4714 _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
4715 {
4716         mpt2sas_scsih_reset_handler(ioc, reset_phase);
4717         mpt2sas_ctl_reset_handler(ioc, reset_phase);
4718         switch (reset_phase) {
4719         case MPT2_IOC_PRE_RESET:
4720                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4721                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
4722                 break;
4723         case MPT2_IOC_AFTER_RESET:
4724                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4725                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
4726                 if (ioc->transport_cmds.status & MPT2_CMD_PENDING) {
4727                         ioc->transport_cmds.status |= MPT2_CMD_RESET;
4728                         mpt2sas_base_free_smid(ioc, ioc->transport_cmds.smid);
4729                         complete(&ioc->transport_cmds.done);
4730                 }
4731                 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
4732                         ioc->base_cmds.status |= MPT2_CMD_RESET;
4733                         mpt2sas_base_free_smid(ioc, ioc->base_cmds.smid);
4734                         complete(&ioc->base_cmds.done);
4735                 }
4736                 if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
4737                         ioc->port_enable_failed = 1;
4738                         ioc->port_enable_cmds.status |= MPT2_CMD_RESET;
4739                         mpt2sas_base_free_smid(ioc, ioc->port_enable_cmds.smid);
4740                         if (ioc->is_driver_loading) {
4741                                 ioc->start_scan_failed =
4742                                     MPI2_IOCSTATUS_INTERNAL_ERROR;
4743                                 ioc->start_scan = 0;
4744                                 ioc->port_enable_cmds.status =
4745                                                 MPT2_CMD_NOT_USED;
4746                         } else
4747                                 complete(&ioc->port_enable_cmds.done);
4748
4749                 }
4750                 if (ioc->config_cmds.status & MPT2_CMD_PENDING) {
4751                         ioc->config_cmds.status |= MPT2_CMD_RESET;
4752                         mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid);
4753                         ioc->config_cmds.smid = USHRT_MAX;
4754                         complete(&ioc->config_cmds.done);
4755                 }
4756                 break;
4757         case MPT2_IOC_DONE_RESET:
4758                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4759                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
4760                 break;
4761         }
4762 }
4763
4764 /**
4765  * _wait_for_commands_to_complete - reset controller
4766  * @ioc: Pointer to MPT_ADAPTER structure
4767  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4768  *
4769  * This function waiting(3s) for all pending commands to complete
4770  * prior to putting controller in reset.
4771  */
4772 static void
4773 _wait_for_commands_to_complete(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4774 {
4775         u32 ioc_state;
4776         unsigned long flags;
4777         u16 i;
4778
4779         ioc->pending_io_count = 0;
4780         if (sleep_flag != CAN_SLEEP)
4781                 return;
4782
4783         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4784         if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
4785                 return;
4786
4787         /* pending command count */
4788         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4789         for (i = 0; i < ioc->scsiio_depth; i++)
4790                 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
4791                         ioc->pending_io_count++;
4792         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4793
4794         if (!ioc->pending_io_count)
4795                 return;
4796
4797         /* wait for pending commands to complete */
4798         wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ);
4799 }
4800
4801 /**
4802  * mpt2sas_base_hard_reset_handler - reset controller
4803  * @ioc: Pointer to MPT_ADAPTER structure
4804  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4805  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4806  *
4807  * Returns 0 for success, non-zero for failure.
4808  */
4809 int
4810 mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4811     enum reset_type type)
4812 {
4813         int r;
4814         unsigned long flags;
4815
4816         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
4817             __func__));
4818
4819         if (ioc->pci_error_recovery) {
4820                 printk(MPT2SAS_ERR_FMT "%s: pci error recovery reset\n",
4821                     ioc->name, __func__);
4822                 r = 0;
4823                 goto out_unlocked;
4824         }
4825
4826         if (mpt2sas_fwfault_debug)
4827                 mpt2sas_halt_firmware(ioc);
4828
4829         /* TODO - What we really should be doing is pulling
4830          * out all the code associated with NO_SLEEP; its never used.
4831          * That is legacy code from mpt fusion driver, ported over.
4832          * I will leave this BUG_ON here for now till its been resolved.
4833          */
4834         BUG_ON(sleep_flag == NO_SLEEP);
4835
4836         /* wait for an active reset in progress to complete */
4837         if (!mutex_trylock(&ioc->reset_in_progress_mutex)) {
4838                 do {
4839                         ssleep(1);
4840                 } while (ioc->shost_recovery == 1);
4841                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4842                     __func__));
4843                 return ioc->ioc_reset_in_progress_status;
4844         }
4845
4846         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4847         ioc->shost_recovery = 1;
4848         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4849
4850         _base_reset_handler(ioc, MPT2_IOC_PRE_RESET);
4851         _wait_for_commands_to_complete(ioc, sleep_flag);
4852         _base_mask_interrupts(ioc);
4853         r = _base_make_ioc_ready(ioc, sleep_flag, type);
4854         if (r)
4855                 goto out;
4856         _base_reset_handler(ioc, MPT2_IOC_AFTER_RESET);
4857
4858         /* If this hard reset is called while port enable is active, then
4859          * there is no reason to call make_ioc_operational
4860          */
4861         if (ioc->is_driver_loading && ioc->port_enable_failed) {
4862                 ioc->remove_host = 1;
4863                 r = -EFAULT;
4864                 goto out;
4865         }
4866
4867         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
4868         if (r)
4869                 goto out;
4870
4871         if (ioc->rdpq_array_enable && !ioc->rdpq_array_capable)
4872                 panic("%s: Issue occurred with flashing controller firmware."
4873                       "Please reboot the system and ensure that the correct"
4874                       " firmware version is running\n", ioc->name);
4875
4876         r = _base_make_ioc_operational(ioc, sleep_flag);
4877         if (!r)
4878                 _base_reset_handler(ioc, MPT2_IOC_DONE_RESET);
4879  out:
4880         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: %s\n",
4881             ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
4882
4883         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4884         ioc->ioc_reset_in_progress_status = r;
4885         ioc->shost_recovery = 0;
4886         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4887         mutex_unlock(&ioc->reset_in_progress_mutex);
4888
4889  out_unlocked:
4890         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4891             __func__));
4892         return r;
4893 }