kernel/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; i++) {
1561                 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
1562                         if (pio_sz)
1563                                 continue;
1564                         pio_chip = (u64)pci_resource_start(pdev, i);
1565                         pio_sz = pci_resource_len(pdev, i);
1566                 } else {
1567                         if (memap_sz)
1568                                 continue;
1569                         /* verify memory resource is valid before using */
1570                         if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
1571                                 ioc->chip_phys = pci_resource_start(pdev, i);
1572                                 chip_phys = (u64)ioc->chip_phys;
1573                                 memap_sz = pci_resource_len(pdev, i);
1574                                 ioc->chip = ioremap(ioc->chip_phys, memap_sz);
1575                                 if (ioc->chip == NULL) {
1576                                         printk(MPT2SAS_ERR_FMT "unable to map "
1577                                             "adapter memory!\n", ioc->name);
1578                                         r = -EINVAL;
1579                                         goto out_fail;
1580                                 }
1581                         }
1582                 }
1583         }
1584
1585         _base_mask_interrupts(ioc);
1586
1587         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
1588         if (r)
1589                 goto out_fail;
1590
1591         if (!ioc->rdpq_array_enable_assigned) {
1592                 ioc->rdpq_array_enable = ioc->rdpq_array_capable;
1593                 ioc->rdpq_array_enable_assigned = 1;
1594         }
1595
1596         r = _base_enable_msix(ioc);
1597         if (r)
1598                 goto out_fail;
1599
1600         list_for_each_entry(reply_q, &ioc->reply_queue_list, list)
1601                 printk(MPT2SAS_INFO_FMT "%s: IRQ %d\n",
1602                     reply_q->name,  ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
1603                     "IO-APIC enabled"), reply_q->vector);
1604
1605         printk(MPT2SAS_INFO_FMT "iomem(0x%016llx), mapped(0x%p), size(%d)\n",
1606             ioc->name, (unsigned long long)chip_phys, ioc->chip, memap_sz);
1607         printk(MPT2SAS_INFO_FMT "ioport(0x%016llx), size(%d)\n",
1608             ioc->name, (unsigned long long)pio_chip, pio_sz);
1609
1610         /* Save PCI configuration state for recovery from PCI AER/EEH errors */
1611         pci_save_state(pdev);
1612
1613         return 0;
1614
1615  out_fail:
1616         if (ioc->chip_phys)
1617                 iounmap(ioc->chip);
1618         ioc->chip_phys = 0;
1619         pci_release_selected_regions(ioc->pdev, ioc->bars);
1620         pci_disable_pcie_error_reporting(pdev);
1621         pci_disable_device(pdev);
1622         return r;
1623 }
1624
1625 /**
1626  * mpt2sas_base_get_msg_frame - obtain request mf pointer
1627  * @ioc: per adapter object
1628  * @smid: system request message index(smid zero is invalid)
1629  *
1630  * Returns virt pointer to message frame.
1631  */
1632 void *
1633 mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1634 {
1635         return (void *)(ioc->request + (smid * ioc->request_sz));
1636 }
1637
1638 /**
1639  * mpt2sas_base_get_sense_buffer - obtain a sense buffer assigned to a mf request
1640  * @ioc: per adapter object
1641  * @smid: system request message index
1642  *
1643  * Returns virt pointer to sense buffer.
1644  */
1645 void *
1646 mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1647 {
1648         return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1649 }
1650
1651 /**
1652  * mpt2sas_base_get_sense_buffer_dma - obtain a sense buffer assigned to a mf request
1653  * @ioc: per adapter object
1654  * @smid: system request message index
1655  *
1656  * Returns phys pointer to the low 32bit address of the sense buffer.
1657  */
1658 __le32
1659 mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1660 {
1661         return cpu_to_le32(ioc->sense_dma +
1662                         ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1663 }
1664
1665 /**
1666  * mpt2sas_base_get_reply_virt_addr - obtain reply frames virt address
1667  * @ioc: per adapter object
1668  * @phys_addr: lower 32 physical addr of the reply
1669  *
1670  * Converts 32bit lower physical addr into a virt address.
1671  */
1672 void *
1673 mpt2sas_base_get_reply_virt_addr(struct MPT2SAS_ADAPTER *ioc, u32 phys_addr)
1674 {
1675         if (!phys_addr)
1676                 return NULL;
1677         return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
1678 }
1679
1680 /**
1681  * mpt2sas_base_get_smid - obtain a free smid from internal queue
1682  * @ioc: per adapter object
1683  * @cb_idx: callback index
1684  *
1685  * Returns smid (zero is invalid)
1686  */
1687 u16
1688 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1689 {
1690         unsigned long flags;
1691         struct request_tracker *request;
1692         u16 smid;
1693
1694         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1695         if (list_empty(&ioc->internal_free_list)) {
1696                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1697                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1698                     ioc->name, __func__);
1699                 return 0;
1700         }
1701
1702         request = list_entry(ioc->internal_free_list.next,
1703             struct request_tracker, tracker_list);
1704         request->cb_idx = cb_idx;
1705         smid = request->smid;
1706         list_del(&request->tracker_list);
1707         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1708         return smid;
1709 }
1710
1711 /**
1712  * mpt2sas_base_get_smid_scsiio - obtain a free smid from scsiio queue
1713  * @ioc: per adapter object
1714  * @cb_idx: callback index
1715  * @scmd: pointer to scsi command object
1716  *
1717  * Returns smid (zero is invalid)
1718  */
1719 u16
1720 mpt2sas_base_get_smid_scsiio(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx,
1721     struct scsi_cmnd *scmd)
1722 {
1723         unsigned long flags;
1724         struct scsiio_tracker *request;
1725         u16 smid;
1726
1727         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1728         if (list_empty(&ioc->free_list)) {
1729                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1730                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1731                     ioc->name, __func__);
1732                 return 0;
1733         }
1734
1735         request = list_entry(ioc->free_list.next,
1736             struct scsiio_tracker, tracker_list);
1737         request->scmd = scmd;
1738         request->cb_idx = cb_idx;
1739         smid = request->smid;
1740         list_del(&request->tracker_list);
1741         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1742         return smid;
1743 }
1744
1745 /**
1746  * mpt2sas_base_get_smid_hpr - obtain a free smid from hi-priority queue
1747  * @ioc: per adapter object
1748  * @cb_idx: callback index
1749  *
1750  * Returns smid (zero is invalid)
1751  */
1752 u16
1753 mpt2sas_base_get_smid_hpr(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1754 {
1755         unsigned long flags;
1756         struct request_tracker *request;
1757         u16 smid;
1758
1759         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1760         if (list_empty(&ioc->hpr_free_list)) {
1761                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1762                 return 0;
1763         }
1764
1765         request = list_entry(ioc->hpr_free_list.next,
1766             struct request_tracker, tracker_list);
1767         request->cb_idx = cb_idx;
1768         smid = request->smid;
1769         list_del(&request->tracker_list);
1770         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1771         return smid;
1772 }
1773
1774
1775 /**
1776  * mpt2sas_base_free_smid - put smid back on free_list
1777  * @ioc: per adapter object
1778  * @smid: system request message index
1779  *
1780  * Return nothing.
1781  */
1782 void
1783 mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1784 {
1785         unsigned long flags;
1786         int i;
1787         struct chain_tracker *chain_req, *next;
1788
1789         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1790         if (smid < ioc->hi_priority_smid) {
1791                 /* scsiio queue */
1792                 i = smid - 1;
1793                 if (!list_empty(&ioc->scsi_lookup[i].chain_list)) {
1794                         list_for_each_entry_safe(chain_req, next,
1795                             &ioc->scsi_lookup[i].chain_list, tracker_list) {
1796                                 list_del_init(&chain_req->tracker_list);
1797                                 list_add(&chain_req->tracker_list,
1798                                     &ioc->free_chain_list);
1799                         }
1800                 }
1801                 ioc->scsi_lookup[i].cb_idx = 0xFF;
1802                 ioc->scsi_lookup[i].scmd = NULL;
1803                 ioc->scsi_lookup[i].direct_io = 0;
1804                 list_add(&ioc->scsi_lookup[i].tracker_list,
1805                     &ioc->free_list);
1806                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1807
1808                 /*
1809                  * See _wait_for_commands_to_complete() call with regards
1810                  * to this code.
1811                  */
1812                 if (ioc->shost_recovery && ioc->pending_io_count) {
1813                         if (ioc->pending_io_count == 1)
1814                                 wake_up(&ioc->reset_wq);
1815                         ioc->pending_io_count--;
1816                 }
1817                 return;
1818         } else if (smid < ioc->internal_smid) {
1819                 /* hi-priority */
1820                 i = smid - ioc->hi_priority_smid;
1821                 ioc->hpr_lookup[i].cb_idx = 0xFF;
1822                 list_add(&ioc->hpr_lookup[i].tracker_list,
1823                     &ioc->hpr_free_list);
1824         } else if (smid <= ioc->hba_queue_depth) {
1825                 /* internal queue */
1826                 i = smid - ioc->internal_smid;
1827                 ioc->internal_lookup[i].cb_idx = 0xFF;
1828                 list_add(&ioc->internal_lookup[i].tracker_list,
1829                     &ioc->internal_free_list);
1830         }
1831         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1832 }
1833
1834 /**
1835  * _base_writeq - 64 bit write to MMIO
1836  * @ioc: per adapter object
1837  * @b: data payload
1838  * @addr: address in MMIO space
1839  * @writeq_lock: spin lock
1840  *
1841  * Glue for handling an atomic 64 bit word to MMIO. This special handling takes
1842  * care of 32 bit environment where its not quarenteed to send the entire word
1843  * in one transfer.
1844  */
1845 #ifndef writeq
1846 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1847     spinlock_t *writeq_lock)
1848 {
1849         unsigned long flags;
1850         __u64 data_out = cpu_to_le64(b);
1851
1852         spin_lock_irqsave(writeq_lock, flags);
1853         writel((u32)(data_out), addr);
1854         writel((u32)(data_out >> 32), (addr + 4));
1855         spin_unlock_irqrestore(writeq_lock, flags);
1856 }
1857 #else
1858 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1859     spinlock_t *writeq_lock)
1860 {
1861         writeq(cpu_to_le64(b), addr);
1862 }
1863 #endif
1864
1865 static inline u8
1866 _base_get_msix_index(struct MPT2SAS_ADAPTER *ioc)
1867 {
1868         return ioc->cpu_msix_table[raw_smp_processor_id()];
1869 }
1870
1871 /**
1872  * mpt2sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
1873  * @ioc: per adapter object
1874  * @smid: system request message index
1875  * @handle: device handle
1876  *
1877  * Return nothing.
1878  */
1879 void
1880 mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid, u16 handle)
1881 {
1882         Mpi2RequestDescriptorUnion_t descriptor;
1883         u64 *request = (u64 *)&descriptor;
1884
1885
1886         descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
1887         descriptor.SCSIIO.MSIxIndex =  _base_get_msix_index(ioc);
1888         descriptor.SCSIIO.SMID = cpu_to_le16(smid);
1889         descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
1890         descriptor.SCSIIO.LMID = 0;
1891         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1892             &ioc->scsi_lookup_lock);
1893 }
1894
1895
1896 /**
1897  * mpt2sas_base_put_smid_hi_priority - send Task Management request to firmware
1898  * @ioc: per adapter object
1899  * @smid: system request message index
1900  *
1901  * Return nothing.
1902  */
1903 void
1904 mpt2sas_base_put_smid_hi_priority(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1905 {
1906         Mpi2RequestDescriptorUnion_t descriptor;
1907         u64 *request = (u64 *)&descriptor;
1908
1909         descriptor.HighPriority.RequestFlags =
1910             MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
1911         descriptor.HighPriority.MSIxIndex =  0;
1912         descriptor.HighPriority.SMID = cpu_to_le16(smid);
1913         descriptor.HighPriority.LMID = 0;
1914         descriptor.HighPriority.Reserved1 = 0;
1915         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1916             &ioc->scsi_lookup_lock);
1917 }
1918
1919 /**
1920  * mpt2sas_base_put_smid_default - Default, primarily used for config pages
1921  * @ioc: per adapter object
1922  * @smid: system request message index
1923  *
1924  * Return nothing.
1925  */
1926 void
1927 mpt2sas_base_put_smid_default(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1928 {
1929         Mpi2RequestDescriptorUnion_t descriptor;
1930         u64 *request = (u64 *)&descriptor;
1931
1932         descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1933         descriptor.Default.MSIxIndex =  _base_get_msix_index(ioc);
1934         descriptor.Default.SMID = cpu_to_le16(smid);
1935         descriptor.Default.LMID = 0;
1936         descriptor.Default.DescriptorTypeDependent = 0;
1937         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1938             &ioc->scsi_lookup_lock);
1939 }
1940
1941 /**
1942  * mpt2sas_base_put_smid_target_assist - send Target Assist/Status to firmware
1943  * @ioc: per adapter object
1944  * @smid: system request message index
1945  * @io_index: value used to track the IO
1946  *
1947  * Return nothing.
1948  */
1949 void
1950 mpt2sas_base_put_smid_target_assist(struct MPT2SAS_ADAPTER *ioc, u16 smid,
1951     u16 io_index)
1952 {
1953         Mpi2RequestDescriptorUnion_t descriptor;
1954         u64 *request = (u64 *)&descriptor;
1955
1956         descriptor.SCSITarget.RequestFlags =
1957             MPI2_REQ_DESCRIPT_FLAGS_SCSI_TARGET;
1958         descriptor.SCSITarget.MSIxIndex =  _base_get_msix_index(ioc);
1959         descriptor.SCSITarget.SMID = cpu_to_le16(smid);
1960         descriptor.SCSITarget.LMID = 0;
1961         descriptor.SCSITarget.IoIndex = cpu_to_le16(io_index);
1962         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1963             &ioc->scsi_lookup_lock);
1964 }
1965
1966 /**
1967  * _base_display_dell_branding - Disply branding string
1968  * @ioc: per adapter object
1969  *
1970  * Return nothing.
1971  */
1972 static void
1973 _base_display_dell_branding(struct MPT2SAS_ADAPTER *ioc)
1974 {
1975         char dell_branding[MPT2SAS_DELL_BRANDING_SIZE];
1976
1977         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_DELL)
1978                 return;
1979
1980         memset(dell_branding, 0, MPT2SAS_DELL_BRANDING_SIZE);
1981         switch (ioc->pdev->subsystem_device) {
1982         case MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID:
1983                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING,
1984                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1985                 break;
1986         case MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID:
1987                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING,
1988                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1989                 break;
1990         case MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID:
1991                 strncpy(dell_branding,
1992                     MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING,
1993                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1994                 break;
1995         case MPT2SAS_DELL_PERC_H200_MODULAR_SSDID:
1996                 strncpy(dell_branding,
1997                     MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING,
1998                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1999                 break;
2000         case MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID:
2001                 strncpy(dell_branding,
2002                     MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING,
2003                     MPT2SAS_DELL_BRANDING_SIZE - 1);
2004                 break;
2005         case MPT2SAS_DELL_PERC_H200_SSDID:
2006                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_BRANDING,
2007                     MPT2SAS_DELL_BRANDING_SIZE - 1);
2008                 break;
2009         case MPT2SAS_DELL_6GBPS_SAS_SSDID:
2010                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_BRANDING,
2011                     MPT2SAS_DELL_BRANDING_SIZE - 1);
2012                 break;
2013         default:
2014                 sprintf(dell_branding, "0x%4X", ioc->pdev->subsystem_device);
2015                 break;
2016         }
2017
2018         printk(MPT2SAS_INFO_FMT "%s: Vendor(0x%04X), Device(0x%04X),"
2019             " SSVID(0x%04X), SSDID(0x%04X)\n", ioc->name, dell_branding,
2020             ioc->pdev->vendor, ioc->pdev->device, ioc->pdev->subsystem_vendor,
2021             ioc->pdev->subsystem_device);
2022 }
2023
2024 /**
2025  * _base_display_intel_branding - Display branding string
2026  * @ioc: per adapter object
2027  *
2028  * Return nothing.
2029  */
2030 static void
2031 _base_display_intel_branding(struct MPT2SAS_ADAPTER *ioc)
2032 {
2033         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
2034                 return;
2035
2036         switch (ioc->pdev->device) {
2037         case MPI2_MFGPAGE_DEVID_SAS2008:
2038                 switch (ioc->pdev->subsystem_device) {
2039                 case MPT2SAS_INTEL_RMS2LL080_SSDID:
2040                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2041                             MPT2SAS_INTEL_RMS2LL080_BRANDING);
2042                         break;
2043                 case MPT2SAS_INTEL_RMS2LL040_SSDID:
2044                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2045                             MPT2SAS_INTEL_RMS2LL040_BRANDING);
2046                         break;
2047                 case MPT2SAS_INTEL_SSD910_SSDID:
2048                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2049                             MPT2SAS_INTEL_SSD910_BRANDING);
2050                         break;
2051                 default:
2052                         break;
2053                 }
2054         case MPI2_MFGPAGE_DEVID_SAS2308_2:
2055                 switch (ioc->pdev->subsystem_device) {
2056                 case MPT2SAS_INTEL_RS25GB008_SSDID:
2057                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2058                             MPT2SAS_INTEL_RS25GB008_BRANDING);
2059                         break;
2060                 case MPT2SAS_INTEL_RMS25JB080_SSDID:
2061                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2062                             MPT2SAS_INTEL_RMS25JB080_BRANDING);
2063                         break;
2064                 case MPT2SAS_INTEL_RMS25JB040_SSDID:
2065                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2066                             MPT2SAS_INTEL_RMS25JB040_BRANDING);
2067                         break;
2068                 case MPT2SAS_INTEL_RMS25KB080_SSDID:
2069                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2070                             MPT2SAS_INTEL_RMS25KB080_BRANDING);
2071                         break;
2072                 case MPT2SAS_INTEL_RMS25KB040_SSDID:
2073                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2074                             MPT2SAS_INTEL_RMS25KB040_BRANDING);
2075                         break;
2076                 case MPT2SAS_INTEL_RMS25LB040_SSDID:
2077                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2078                             MPT2SAS_INTEL_RMS25LB040_BRANDING);
2079                         break;
2080                 case MPT2SAS_INTEL_RMS25LB080_SSDID:
2081                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2082                             MPT2SAS_INTEL_RMS25LB080_BRANDING);
2083                         break;
2084                 default:
2085                         break;
2086                 }
2087         default:
2088                 break;
2089         }
2090 }
2091
2092 /**
2093  * _base_display_hp_branding - Display branding string
2094  * @ioc: per adapter object
2095  *
2096  * Return nothing.
2097  */
2098 static void
2099 _base_display_hp_branding(struct MPT2SAS_ADAPTER *ioc)
2100 {
2101         if (ioc->pdev->subsystem_vendor != MPT2SAS_HP_3PAR_SSVID)
2102                 return;
2103
2104         switch (ioc->pdev->device) {
2105         case MPI2_MFGPAGE_DEVID_SAS2004:
2106                 switch (ioc->pdev->subsystem_device) {
2107                 case MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_SSDID:
2108                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2109                             MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_BRANDING);
2110                         break;
2111                 default:
2112                         break;
2113                 }
2114         case MPI2_MFGPAGE_DEVID_SAS2308_2:
2115                 switch (ioc->pdev->subsystem_device) {
2116                 case MPT2SAS_HP_2_4_INTERNAL_SSDID:
2117                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2118                             MPT2SAS_HP_2_4_INTERNAL_BRANDING);
2119                         break;
2120                 case MPT2SAS_HP_2_4_EXTERNAL_SSDID:
2121                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2122                             MPT2SAS_HP_2_4_EXTERNAL_BRANDING);
2123                         break;
2124                 case MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_SSDID:
2125                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2126                             MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_BRANDING);
2127                         break;
2128                 case MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_SSDID:
2129                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2130                             MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_BRANDING);
2131                         break;
2132                 default:
2133                         break;
2134                 }
2135         default:
2136                 break;
2137         }
2138 }
2139
2140 /**
2141  * _base_display_ioc_capabilities - Disply IOC's capabilities.
2142  * @ioc: per adapter object
2143  *
2144  * Return nothing.
2145  */
2146 static void
2147 _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc)
2148 {
2149         int i = 0;
2150         char desc[16];
2151         u32 iounit_pg1_flags;
2152         u32 bios_version;
2153
2154         bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2155         strncpy(desc, ioc->manu_pg0.ChipName, 16);
2156         printk(MPT2SAS_INFO_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "
2157            "ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
2158             ioc->name, desc,
2159            (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2160            (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2161            (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2162            ioc->facts.FWVersion.Word & 0x000000FF,
2163            ioc->pdev->revision,
2164            (bios_version & 0xFF000000) >> 24,
2165            (bios_version & 0x00FF0000) >> 16,
2166            (bios_version & 0x0000FF00) >> 8,
2167             bios_version & 0x000000FF);
2168
2169         _base_display_dell_branding(ioc);
2170         _base_display_intel_branding(ioc);
2171         _base_display_hp_branding(ioc);
2172
2173         printk(MPT2SAS_INFO_FMT "Protocol=(", ioc->name);
2174
2175         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
2176                 printk("Initiator");
2177                 i++;
2178         }
2179
2180         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
2181                 printk("%sTarget", i ? "," : "");
2182                 i++;
2183         }
2184
2185         i = 0;
2186         printk("), ");
2187         printk("Capabilities=(");
2188
2189         if (!ioc->hide_ir_msg) {
2190                 if (ioc->facts.IOCCapabilities &
2191                     MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
2192                         printk("Raid");
2193                         i++;
2194                 }
2195         }
2196
2197         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
2198                 printk("%sTLR", i ? "," : "");
2199                 i++;
2200         }
2201
2202         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
2203                 printk("%sMulticast", i ? "," : "");
2204                 i++;
2205         }
2206
2207         if (ioc->facts.IOCCapabilities &
2208             MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
2209                 printk("%sBIDI Target", i ? "," : "");
2210                 i++;
2211         }
2212
2213         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
2214                 printk("%sEEDP", i ? "," : "");
2215                 i++;
2216         }
2217
2218         if (ioc->facts.IOCCapabilities &
2219             MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
2220                 printk("%sSnapshot Buffer", i ? "," : "");
2221                 i++;
2222         }
2223
2224         if (ioc->facts.IOCCapabilities &
2225             MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
2226                 printk("%sDiag Trace Buffer", i ? "," : "");
2227                 i++;
2228         }
2229
2230         if (ioc->facts.IOCCapabilities &
2231             MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) {
2232                 printk(KERN_INFO "%sDiag Extended Buffer", i ? "," : "");
2233                 i++;
2234         }
2235
2236         if (ioc->facts.IOCCapabilities &
2237             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
2238                 printk("%sTask Set Full", i ? "," : "");
2239                 i++;
2240         }
2241
2242         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2243         if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
2244                 printk("%sNCQ", i ? "," : "");
2245                 i++;
2246         }
2247
2248         printk(")\n");
2249 }
2250
2251 /**
2252  * mpt2sas_base_update_missing_delay - change the missing delay timers
2253  * @ioc: per adapter object
2254  * @device_missing_delay: amount of time till device is reported missing
2255  * @io_missing_delay: interval IO is returned when there is a missing device
2256  *
2257  * Return nothing.
2258  *
2259  * Passed on the command line, this function will modify the device missing
2260  * delay, as well as the io missing delay. This should be called at driver
2261  * load time.
2262  */
2263 void
2264 mpt2sas_base_update_missing_delay(struct MPT2SAS_ADAPTER *ioc,
2265         u16 device_missing_delay, u8 io_missing_delay)
2266 {
2267         u16 dmd, dmd_new, dmd_orignal;
2268         u8 io_missing_delay_original;
2269         u16 sz;
2270         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
2271         Mpi2ConfigReply_t mpi_reply;
2272         u8 num_phys = 0;
2273         u16 ioc_status;
2274
2275         mpt2sas_config_get_number_hba_phys(ioc, &num_phys);
2276         if (!num_phys)
2277                 return;
2278
2279         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (num_phys *
2280             sizeof(Mpi2SasIOUnit1PhyData_t));
2281         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
2282         if (!sas_iounit_pg1) {
2283                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2284                     ioc->name, __FILE__, __LINE__, __func__);
2285                 goto out;
2286         }
2287         if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
2288             sas_iounit_pg1, sz))) {
2289                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2290                     ioc->name, __FILE__, __LINE__, __func__);
2291                 goto out;
2292         }
2293         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
2294             MPI2_IOCSTATUS_MASK;
2295         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2296                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2297                     ioc->name, __FILE__, __LINE__, __func__);
2298                 goto out;
2299         }
2300
2301         /* device missing delay */
2302         dmd = sas_iounit_pg1->ReportDeviceMissingDelay;
2303         if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2304                 dmd = (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2305         else
2306                 dmd = dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2307         dmd_orignal = dmd;
2308         if (device_missing_delay > 0x7F) {
2309                 dmd = (device_missing_delay > 0x7F0) ? 0x7F0 :
2310                     device_missing_delay;
2311                 dmd = dmd / 16;
2312                 dmd |= MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16;
2313         } else
2314                 dmd = device_missing_delay;
2315         sas_iounit_pg1->ReportDeviceMissingDelay = dmd;
2316
2317         /* io missing delay */
2318         io_missing_delay_original = sas_iounit_pg1->IODeviceMissingDelay;
2319         sas_iounit_pg1->IODeviceMissingDelay = io_missing_delay;
2320
2321         if (!mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
2322             sz)) {
2323                 if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2324                         dmd_new = (dmd &
2325                             MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2326                 else
2327                         dmd_new =
2328                     dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2329                 printk(MPT2SAS_INFO_FMT "device_missing_delay: old(%d), "
2330                     "new(%d)\n", ioc->name, dmd_orignal, dmd_new);
2331                 printk(MPT2SAS_INFO_FMT "ioc_missing_delay: old(%d), "
2332                     "new(%d)\n", ioc->name, io_missing_delay_original,
2333                     io_missing_delay);
2334                 ioc->device_missing_delay = dmd_new;
2335                 ioc->io_missing_delay = io_missing_delay;
2336         }
2337
2338 out:
2339         kfree(sas_iounit_pg1);
2340 }
2341
2342 /**
2343  * _base_static_config_pages - static start of day config pages
2344  * @ioc: per adapter object
2345  *
2346  * Return nothing.
2347  */
2348 static void
2349 _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc)
2350 {
2351         Mpi2ConfigReply_t mpi_reply;
2352         u32 iounit_pg1_flags;
2353
2354         mpt2sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
2355         if (ioc->ir_firmware)
2356                 mpt2sas_config_get_manufacturing_pg10(ioc, &mpi_reply,
2357                     &ioc->manu_pg10);
2358         mpt2sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
2359         mpt2sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
2360         mpt2sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
2361         mpt2sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
2362         mpt2sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2363         mpt2sas_config_get_iounit_pg8(ioc, &mpi_reply, &ioc->iounit_pg8);
2364         _base_display_ioc_capabilities(ioc);
2365
2366         /*
2367          * Enable task_set_full handling in iounit_pg1 when the
2368          * facts capabilities indicate that its supported.
2369          */
2370         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2371         if ((ioc->facts.IOCCapabilities &
2372             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
2373                 iounit_pg1_flags &=
2374                     ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2375         else
2376                 iounit_pg1_flags |=
2377                     MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2378         ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
2379         mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2380
2381         if (ioc->iounit_pg8.NumSensors)
2382                 ioc->temp_sensors_count = ioc->iounit_pg8.NumSensors;
2383 }
2384
2385 /**
2386  * _base_release_memory_pools - release memory
2387  * @ioc: per adapter object
2388  *
2389  * Free memory allocated from _base_allocate_memory_pools.
2390  *
2391  * Return nothing.
2392  */
2393 static void
2394 _base_release_memory_pools(struct MPT2SAS_ADAPTER *ioc)
2395 {
2396         int i = 0;
2397         struct reply_post_struct *rps;
2398
2399         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2400             __func__));
2401
2402         if (ioc->request) {
2403                 pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
2404                     ioc->request,  ioc->request_dma);
2405                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "request_pool(0x%p)"
2406                     ": free\n", ioc->name, ioc->request));
2407                 ioc->request = NULL;
2408         }
2409
2410         if (ioc->sense) {
2411                 pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
2412                 if (ioc->sense_dma_pool)
2413                         pci_pool_destroy(ioc->sense_dma_pool);
2414                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_pool(0x%p)"
2415                     ": free\n", ioc->name, ioc->sense));
2416                 ioc->sense = NULL;
2417         }
2418
2419         if (ioc->reply) {
2420                 pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
2421                 if (ioc->reply_dma_pool)
2422                         pci_pool_destroy(ioc->reply_dma_pool);
2423                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_pool(0x%p)"
2424                      ": free\n", ioc->name, ioc->reply));
2425                 ioc->reply = NULL;
2426         }
2427
2428         if (ioc->reply_free) {
2429                 pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
2430                     ioc->reply_free_dma);
2431                 if (ioc->reply_free_dma_pool)
2432                         pci_pool_destroy(ioc->reply_free_dma_pool);
2433                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_pool"
2434                     "(0x%p): free\n", ioc->name, ioc->reply_free));
2435                 ioc->reply_free = NULL;
2436         }
2437
2438         if (ioc->reply_post) {
2439                 do {
2440                         rps = &ioc->reply_post[i];
2441                         if (rps->reply_post_free) {
2442                                 pci_pool_free(
2443                                     ioc->reply_post_free_dma_pool,
2444                                     rps->reply_post_free,
2445                                     rps->reply_post_free_dma);
2446                                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2447                                     "reply_post_free_pool(0x%p): free\n",
2448                                     ioc->name, rps->reply_post_free));
2449                                 rps->reply_post_free = NULL;
2450                         }
2451                 } while (ioc->rdpq_array_enable &&
2452                            (++i < ioc->reply_queue_count));
2453
2454                 if (ioc->reply_post_free_dma_pool)
2455                         pci_pool_destroy(ioc->reply_post_free_dma_pool);
2456                 kfree(ioc->reply_post);
2457         }
2458
2459         if (ioc->config_page) {
2460                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2461                     "config_page(0x%p): free\n", ioc->name,
2462                     ioc->config_page));
2463                 pci_free_consistent(ioc->pdev, ioc->config_page_sz,
2464                     ioc->config_page, ioc->config_page_dma);
2465         }
2466
2467         if (ioc->scsi_lookup) {
2468                 free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
2469                 ioc->scsi_lookup = NULL;
2470         }
2471         kfree(ioc->hpr_lookup);
2472         kfree(ioc->internal_lookup);
2473         if (ioc->chain_lookup) {
2474                 for (i = 0; i < ioc->chain_depth; i++) {
2475                         if (ioc->chain_lookup[i].chain_buffer)
2476                                 pci_pool_free(ioc->chain_dma_pool,
2477                                     ioc->chain_lookup[i].chain_buffer,
2478                                     ioc->chain_lookup[i].chain_buffer_dma);
2479                 }
2480                 if (ioc->chain_dma_pool)
2481                         pci_pool_destroy(ioc->chain_dma_pool);
2482                 free_pages((ulong)ioc->chain_lookup, ioc->chain_pages);
2483                 ioc->chain_lookup = NULL;
2484         }
2485 }
2486
2487
2488 /**
2489  * _base_allocate_memory_pools - allocate start of day memory pools
2490  * @ioc: per adapter object
2491  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2492  *
2493  * Returns 0 success, anything else error
2494  */
2495 static int
2496 _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc,  int sleep_flag)
2497 {
2498         struct mpt2sas_facts *facts;
2499         u16 max_sge_elements;
2500         u16 chains_needed_per_io;
2501         u32 sz, total_sz, reply_post_free_sz;
2502         u32 retry_sz;
2503         u16 max_request_credit;
2504         int i;
2505
2506         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2507             __func__));
2508
2509         retry_sz = 0;
2510         facts = &ioc->facts;
2511
2512         /* command line tunables  for max sgl entries */
2513         if (max_sgl_entries != -1) {
2514                 ioc->shost->sg_tablesize =  min_t(unsigned short,
2515                              max_sgl_entries, SCSI_MAX_SG_CHAIN_SEGMENTS);
2516                 if (ioc->shost->sg_tablesize > MPT2SAS_SG_DEPTH)
2517                         printk(MPT2SAS_WARN_FMT
2518                          "sg_tablesize(%u) is bigger than kernel defined"
2519                          " SCSI_MAX_SG_SEGMENTS(%u)\n", ioc->name,
2520                           ioc->shost->sg_tablesize, MPT2SAS_SG_DEPTH);
2521         } else {
2522                 ioc->shost->sg_tablesize = MPT2SAS_SG_DEPTH;
2523         }
2524
2525         /* command line tunables  for max controller queue depth */
2526         if (max_queue_depth != -1 && max_queue_depth != 0) {
2527                 max_request_credit = min_t(u16, max_queue_depth +
2528                         ioc->hi_priority_depth + ioc->internal_depth,
2529                         facts->RequestCredit);
2530                 if (max_request_credit > MAX_HBA_QUEUE_DEPTH)
2531                         max_request_credit =  MAX_HBA_QUEUE_DEPTH;
2532         } else
2533                 max_request_credit = min_t(u16, facts->RequestCredit,
2534                     MAX_HBA_QUEUE_DEPTH);
2535
2536         ioc->hba_queue_depth = max_request_credit;
2537         ioc->hi_priority_depth = facts->HighPriorityCredit;
2538         ioc->internal_depth = ioc->hi_priority_depth + 5;
2539
2540         /* request frame size */
2541         ioc->request_sz = facts->IOCRequestFrameSize * 4;
2542
2543         /* reply frame size */
2544         ioc->reply_sz = facts->ReplyFrameSize * 4;
2545
2546  retry_allocation:
2547         total_sz = 0;
2548         /* calculate number of sg elements left over in the 1st frame */
2549         max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
2550             sizeof(Mpi2SGEIOUnion_t)) + ioc->sge_size);
2551         ioc->max_sges_in_main_message = max_sge_elements/ioc->sge_size;
2552
2553         /* now do the same for a chain buffer */
2554         max_sge_elements = ioc->request_sz - ioc->sge_size;
2555         ioc->max_sges_in_chain_message = max_sge_elements/ioc->sge_size;
2556
2557         ioc->chain_offset_value_for_main_message =
2558             ((sizeof(Mpi2SCSIIORequest_t) - sizeof(Mpi2SGEIOUnion_t)) +
2559              (ioc->max_sges_in_chain_message * ioc->sge_size)) / 4;
2560
2561         /*
2562          *  MPT2SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
2563          */
2564         chains_needed_per_io = ((ioc->shost->sg_tablesize -
2565            ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
2566             + 1;
2567         if (chains_needed_per_io > facts->MaxChainDepth) {
2568                 chains_needed_per_io = facts->MaxChainDepth;
2569                 ioc->shost->sg_tablesize = min_t(u16,
2570                 ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
2571                 * chains_needed_per_io), ioc->shost->sg_tablesize);
2572         }
2573         ioc->chains_needed_per_io = chains_needed_per_io;
2574
2575         /* reply free queue sizing - taking into account for 64 FW events */
2576         ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
2577
2578         /* calculate reply descriptor post queue depth */
2579         ioc->reply_post_queue_depth = ioc->hba_queue_depth +
2580                                         ioc->reply_free_queue_depth +  1;
2581         /* align the reply post queue on the next 16 count boundary */
2582         if (ioc->reply_post_queue_depth % 16)
2583                 ioc->reply_post_queue_depth += 16 -
2584                         (ioc->reply_post_queue_depth % 16);
2585
2586
2587         if (ioc->reply_post_queue_depth >
2588             facts->MaxReplyDescriptorPostQueueDepth) {
2589                 ioc->reply_post_queue_depth =
2590                         facts->MaxReplyDescriptorPostQueueDepth -
2591                     (facts->MaxReplyDescriptorPostQueueDepth % 16);
2592                 ioc->hba_queue_depth =
2593                         ((ioc->reply_post_queue_depth - 64) / 2) - 1;
2594                 ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
2595         }
2596
2597         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "
2598             "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
2599             "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
2600             ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
2601             ioc->chains_needed_per_io));
2602
2603         /* reply post queue, 16 byte align */
2604         reply_post_free_sz = ioc->reply_post_queue_depth *
2605             sizeof(Mpi2DefaultReplyDescriptor_t);
2606
2607         sz = reply_post_free_sz;
2608         if (_base_is_controller_msix_enabled(ioc) && !ioc->rdpq_array_enable)
2609                 sz *= ioc->reply_queue_count;
2610
2611         ioc->reply_post = kcalloc((ioc->rdpq_array_enable) ?
2612             (ioc->reply_queue_count):1,
2613             sizeof(struct reply_post_struct), GFP_KERNEL);
2614
2615         if (!ioc->reply_post) {
2616                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: kcalloc failed\n",
2617                         ioc->name);
2618                 goto out;
2619         }
2620         ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
2621             ioc->pdev, sz, 16, 0);
2622         if (!ioc->reply_post_free_dma_pool) {
2623                 printk(MPT2SAS_ERR_FMT
2624                  "reply_post_free pool: pci_pool_create failed\n",
2625                  ioc->name);
2626                 goto out;
2627         }
2628         i = 0;
2629         do {
2630                 ioc->reply_post[i].reply_post_free =
2631                     pci_pool_alloc(ioc->reply_post_free_dma_pool,
2632                     GFP_KERNEL,
2633                     &ioc->reply_post[i].reply_post_free_dma);
2634                 if (!ioc->reply_post[i].reply_post_free) {
2635                         printk(MPT2SAS_ERR_FMT
2636                         "reply_post_free pool: pci_pool_alloc failed\n",
2637                         ioc->name);
2638                         goto out;
2639                 }
2640                 memset(ioc->reply_post[i].reply_post_free, 0, sz);
2641                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2642                     "reply post free pool (0x%p): depth(%d),"
2643                     "element_size(%d), pool_size(%d kB)\n", ioc->name,
2644                     ioc->reply_post[i].reply_post_free,
2645                     ioc->reply_post_queue_depth, 8, sz/1024));
2646                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2647                     "reply_post_free_dma = (0x%llx)\n", ioc->name,
2648                     (unsigned long long)
2649                     ioc->reply_post[i].reply_post_free_dma));
2650                 total_sz += sz;
2651         } while (ioc->rdpq_array_enable && (++i < ioc->reply_queue_count));
2652
2653         if (ioc->dma_mask == 64) {
2654                 if (_base_change_consistent_dma_mask(ioc, ioc->pdev) != 0) {
2655                         printk(MPT2SAS_WARN_FMT
2656                             "no suitable consistent DMA mask for %s\n",
2657                             ioc->name, pci_name(ioc->pdev));
2658                         goto out;
2659                 }
2660         }
2661
2662         ioc->scsiio_depth = ioc->hba_queue_depth -
2663             ioc->hi_priority_depth - ioc->internal_depth;
2664
2665         /* set the scsi host can_queue depth
2666          * with some internal commands that could be outstanding
2667          */
2668         ioc->shost->can_queue = ioc->scsiio_depth;
2669         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host: "
2670             "can_queue depth (%d)\n", ioc->name, ioc->shost->can_queue));
2671
2672         /* contiguous pool for request and chains, 16 byte align, one extra "
2673          * "frame for smid=0
2674          */
2675         ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth;
2676         sz = ((ioc->scsiio_depth + 1) * ioc->request_sz);
2677
2678         /* hi-priority queue */
2679         sz += (ioc->hi_priority_depth * ioc->request_sz);
2680
2681         /* internal queue */
2682         sz += (ioc->internal_depth * ioc->request_sz);
2683
2684         ioc->request_dma_sz = sz;
2685         ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
2686         if (!ioc->request) {
2687                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2688                     "failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2689                     "total(%d kB)\n", ioc->name, ioc->hba_queue_depth,
2690                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2691                 if (ioc->scsiio_depth < MPT2SAS_SAS_QUEUE_DEPTH)
2692                         goto out;
2693                 retry_sz += 64;
2694                 ioc->hba_queue_depth = max_request_credit - retry_sz;
2695                 goto retry_allocation;
2696         }
2697
2698         if (retry_sz)
2699                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2700                     "succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2701                     "total(%d kb)\n", ioc->name, ioc->hba_queue_depth,
2702                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2703
2704
2705         /* hi-priority queue */
2706         ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) *
2707             ioc->request_sz);
2708         ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) *
2709             ioc->request_sz);
2710
2711         /* internal queue */
2712         ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth *
2713             ioc->request_sz);
2714         ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth *
2715             ioc->request_sz);
2716
2717
2718         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool(0x%p): "
2719             "depth(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2720             ioc->request, ioc->hba_queue_depth, ioc->request_sz,
2721             (ioc->hba_queue_depth * ioc->request_sz)/1024));
2722         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool: dma(0x%llx)\n",
2723             ioc->name, (unsigned long long) ioc->request_dma));
2724         total_sz += sz;
2725
2726         sz = ioc->scsiio_depth * sizeof(struct scsiio_tracker);
2727         ioc->scsi_lookup_pages = get_order(sz);
2728         ioc->scsi_lookup = (struct scsiio_tracker *)__get_free_pages(
2729             GFP_KERNEL, ioc->scsi_lookup_pages);
2730         if (!ioc->scsi_lookup) {
2731                 printk(MPT2SAS_ERR_FMT "scsi_lookup: get_free_pages failed, "
2732                     "sz(%d)\n", ioc->name, (int)sz);
2733                 goto out;
2734         }
2735
2736         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsiio(0x%p): "
2737             "depth(%d)\n", ioc->name, ioc->request,
2738             ioc->scsiio_depth));
2739
2740         ioc->chain_depth = min_t(u32, ioc->chain_depth, MAX_CHAIN_DEPTH);
2741         sz = ioc->chain_depth * sizeof(struct chain_tracker);
2742         ioc->chain_pages = get_order(sz);
2743
2744         ioc->chain_lookup = (struct chain_tracker *)__get_free_pages(
2745             GFP_KERNEL, ioc->chain_pages);
2746         if (!ioc->chain_lookup) {
2747                 printk(MPT2SAS_ERR_FMT "chain_lookup: get_free_pages failed, "
2748                     "sz(%d)\n", ioc->name, (int)sz);
2749                 goto out;
2750         }
2751         ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev,
2752             ioc->request_sz, 16, 0);
2753         if (!ioc->chain_dma_pool) {
2754                 printk(MPT2SAS_ERR_FMT "chain_dma_pool: pci_pool_create "
2755                     "failed\n", ioc->name);
2756                 goto out;
2757         }
2758         for (i = 0; i < ioc->chain_depth; i++) {
2759                 ioc->chain_lookup[i].chain_buffer = pci_pool_alloc(
2760                     ioc->chain_dma_pool , GFP_KERNEL,
2761                     &ioc->chain_lookup[i].chain_buffer_dma);
2762                 if (!ioc->chain_lookup[i].chain_buffer) {
2763                         ioc->chain_depth = i;
2764                         goto chain_done;
2765                 }
2766                 total_sz += ioc->request_sz;
2767         }
2768 chain_done:
2769         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "chain pool depth"
2770             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2771             ioc->chain_depth, ioc->request_sz, ((ioc->chain_depth *
2772             ioc->request_sz))/1024));
2773
2774         /* initialize hi-priority queue smid's */
2775         ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth,
2776             sizeof(struct request_tracker), GFP_KERNEL);
2777         if (!ioc->hpr_lookup) {
2778                 printk(MPT2SAS_ERR_FMT "hpr_lookup: kcalloc failed\n",
2779                     ioc->name);
2780                 goto out;
2781         }
2782         ioc->hi_priority_smid = ioc->scsiio_depth + 1;
2783         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hi_priority(0x%p): "
2784             "depth(%d), start smid(%d)\n", ioc->name, ioc->hi_priority,
2785             ioc->hi_priority_depth, ioc->hi_priority_smid));
2786
2787         /* initialize internal queue smid's */
2788         ioc->internal_lookup = kcalloc(ioc->internal_depth,
2789             sizeof(struct request_tracker), GFP_KERNEL);
2790         if (!ioc->internal_lookup) {
2791                 printk(MPT2SAS_ERR_FMT "internal_lookup: kcalloc failed\n",
2792                     ioc->name);
2793                 goto out;
2794         }
2795         ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth;
2796         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "internal(0x%p): "
2797             "depth(%d), start smid(%d)\n", ioc->name, ioc->internal,
2798              ioc->internal_depth, ioc->internal_smid));
2799
2800         /* sense buffers, 4 byte align */
2801         sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE;
2802         ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
2803             0);
2804         if (!ioc->sense_dma_pool) {
2805                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_create failed\n",
2806                     ioc->name);
2807                 goto out;
2808         }
2809         ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
2810             &ioc->sense_dma);
2811         if (!ioc->sense) {
2812                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_alloc failed\n",
2813                     ioc->name);
2814                 goto out;
2815         }
2816         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2817             "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
2818             "(%d kB)\n", ioc->name, ioc->sense, ioc->scsiio_depth,
2819             SCSI_SENSE_BUFFERSIZE, sz/1024));
2820         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_dma(0x%llx)\n",
2821             ioc->name, (unsigned long long)ioc->sense_dma));
2822         total_sz += sz;
2823
2824         /* reply pool, 4 byte align */
2825         sz = ioc->reply_free_queue_depth * ioc->reply_sz;
2826         ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
2827             0);
2828         if (!ioc->reply_dma_pool) {
2829                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_create failed\n",
2830                     ioc->name);
2831                 goto out;
2832         }
2833         ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
2834             &ioc->reply_dma);
2835         if (!ioc->reply) {
2836                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_alloc failed\n",
2837                     ioc->name);
2838                 goto out;
2839         }
2840         ioc->reply_dma_min_address = (u32)(ioc->reply_dma);
2841         ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz;
2842         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply pool(0x%p): depth"
2843             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->reply,
2844             ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
2845         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_dma(0x%llx)\n",
2846             ioc->name, (unsigned long long)ioc->reply_dma));
2847         total_sz += sz;
2848
2849         /* reply free queue, 16 byte align */
2850         sz = ioc->reply_free_queue_depth * 4;
2851         ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
2852             ioc->pdev, sz, 16, 0);
2853         if (!ioc->reply_free_dma_pool) {
2854                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_create "
2855                     "failed\n", ioc->name);
2856                 goto out;
2857         }
2858         ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
2859             &ioc->reply_free_dma);
2860         if (!ioc->reply_free) {
2861                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_alloc "
2862                     "failed\n", ioc->name);
2863                 goto out;
2864         }
2865         memset(ioc->reply_free, 0, sz);
2866         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free pool(0x%p): "
2867             "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
2868             ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
2869         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_dma"
2870             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->reply_free_dma));
2871         total_sz += sz;
2872
2873         ioc->config_page_sz = 512;
2874         ioc->config_page = pci_alloc_consistent(ioc->pdev,
2875             ioc->config_page_sz, &ioc->config_page_dma);
2876         if (!ioc->config_page) {
2877                 printk(MPT2SAS_ERR_FMT "config page: pci_pool_alloc "
2878                     "failed\n", ioc->name);
2879                 goto out;
2880         }
2881         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config page(0x%p): size"
2882             "(%d)\n", ioc->name, ioc->config_page, ioc->config_page_sz));
2883         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config_page_dma"
2884             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->config_page_dma));
2885         total_sz += ioc->config_page_sz;
2886
2887         printk(MPT2SAS_INFO_FMT "Allocated physical memory: size(%d kB)\n",
2888             ioc->name, total_sz/1024);
2889         printk(MPT2SAS_INFO_FMT "Current Controller Queue Depth(%d), "
2890             "Max Controller Queue Depth(%d)\n",
2891             ioc->name, ioc->shost->can_queue, facts->RequestCredit);
2892         printk(MPT2SAS_INFO_FMT "Scatter Gather Elements per IO(%d)\n",
2893             ioc->name, ioc->shost->sg_tablesize);
2894         return 0;
2895
2896  out:
2897         return -ENOMEM;
2898 }
2899
2900
2901 /**
2902  * mpt2sas_base_get_iocstate - Get the current state of a MPT adapter.
2903  * @ioc: Pointer to MPT_ADAPTER structure
2904  * @cooked: Request raw or cooked IOC state
2905  *
2906  * Returns all IOC Doorbell register bits if cooked==0, else just the
2907  * Doorbell bits in MPI_IOC_STATE_MASK.
2908  */
2909 u32
2910 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked)
2911 {
2912         u32 s, sc;
2913
2914         s = readl(&ioc->chip->Doorbell);
2915         sc = s & MPI2_IOC_STATE_MASK;
2916         return cooked ? sc : s;
2917 }
2918
2919 /**
2920  * _base_wait_on_iocstate - waiting on a particular ioc state
2921  * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
2922  * @timeout: timeout in second
2923  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2924  *
2925  * Returns 0 for success, non-zero for failure.
2926  */
2927 static int
2928 _base_wait_on_iocstate(struct MPT2SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
2929     int sleep_flag)
2930 {
2931         u32 count, cntdn;
2932         u32 current_state;
2933
2934         count = 0;
2935         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2936         do {
2937                 current_state = mpt2sas_base_get_iocstate(ioc, 1);
2938                 if (current_state == ioc_state)
2939                         return 0;
2940                 if (count && current_state == MPI2_IOC_STATE_FAULT)
2941                         break;
2942                 if (sleep_flag == CAN_SLEEP)
2943                         msleep(1);
2944                 else
2945                         udelay(500);
2946                 count++;
2947         } while (--cntdn);
2948
2949         return current_state;
2950 }
2951
2952 /**
2953  * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
2954  * a write to the doorbell)
2955  * @ioc: per adapter object
2956  * @timeout: timeout in second
2957  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2958  *
2959  * Returns 0 for success, non-zero for failure.
2960  *
2961  * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
2962  */
2963 static int
2964 _base_wait_for_doorbell_int(struct MPT2SAS_ADAPTER *ioc, int timeout,
2965     int sleep_flag)
2966 {
2967         u32 cntdn, count;
2968         u32 int_status;
2969
2970         count = 0;
2971         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2972         do {
2973                 int_status = readl(&ioc->chip->HostInterruptStatus);
2974                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2975                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2976                             "successful count(%d), timeout(%d)\n", ioc->name,
2977                             __func__, count, timeout));
2978                         return 0;
2979                 }
2980                 if (sleep_flag == CAN_SLEEP)
2981                         msleep(1);
2982                 else
2983                         udelay(500);
2984                 count++;
2985         } while (--cntdn);
2986
2987         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2988             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2989         return -EFAULT;
2990 }
2991
2992 /**
2993  * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
2994  * @ioc: per adapter object
2995  * @timeout: timeout in second
2996  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2997  *
2998  * Returns 0 for success, non-zero for failure.
2999  *
3000  * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
3001  * doorbell.
3002  */
3003 static int
3004 _base_wait_for_doorbell_ack(struct MPT2SAS_ADAPTER *ioc, int timeout,
3005     int sleep_flag)
3006 {
3007         u32 cntdn, count;
3008         u32 int_status;
3009         u32 doorbell;
3010
3011         count = 0;
3012         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
3013         do {
3014                 int_status = readl(&ioc->chip->HostInterruptStatus);
3015                 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
3016                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
3017                             "successful count(%d), timeout(%d)\n", ioc->name,
3018                             __func__, count, timeout));
3019                         return 0;
3020                 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
3021                         doorbell = readl(&ioc->chip->Doorbell);
3022                         if ((doorbell & MPI2_IOC_STATE_MASK) ==
3023                             MPI2_IOC_STATE_FAULT) {
3024                                 mpt2sas_base_fault_info(ioc , doorbell);
3025                                 return -EFAULT;
3026                         }
3027                 } else if (int_status == 0xFFFFFFFF)
3028                         goto out;
3029
3030                 if (sleep_flag == CAN_SLEEP)
3031                         msleep(1);
3032                 else
3033                         udelay(500);
3034                 count++;
3035         } while (--cntdn);
3036
3037  out:
3038         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
3039             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
3040         return -EFAULT;
3041 }
3042
3043 /**
3044  * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
3045  * @ioc: per adapter object
3046  * @timeout: timeout in second
3047  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3048  *
3049  * Returns 0 for success, non-zero for failure.
3050  *
3051  */
3052 static int
3053 _base_wait_for_doorbell_not_used(struct MPT2SAS_ADAPTER *ioc, int timeout,
3054     int sleep_flag)
3055 {
3056         u32 cntdn, count;
3057         u32 doorbell_reg;
3058
3059         count = 0;
3060         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
3061         do {
3062                 doorbell_reg = readl(&ioc->chip->Doorbell);
3063                 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
3064                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
3065                             "successful count(%d), timeout(%d)\n", ioc->name,
3066                             __func__, count, timeout));
3067                         return 0;
3068                 }
3069                 if (sleep_flag == CAN_SLEEP)
3070                         msleep(1);
3071                 else
3072                         udelay(500);
3073                 count++;
3074         } while (--cntdn);
3075
3076         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
3077             "doorbell_reg(%x)!\n", ioc->name, __func__, count, doorbell_reg);
3078         return -EFAULT;
3079 }
3080
3081 /**
3082  * _base_send_ioc_reset - send doorbell reset
3083  * @ioc: per adapter object
3084  * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
3085  * @timeout: timeout in second
3086  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3087  *
3088  * Returns 0 for success, non-zero for failure.
3089  */
3090 static int
3091 _base_send_ioc_reset(struct MPT2SAS_ADAPTER *ioc, u8 reset_type, int timeout,
3092     int sleep_flag)
3093 {
3094         u32 ioc_state;
3095         int r = 0;
3096
3097         if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
3098                 printk(MPT2SAS_ERR_FMT "%s: unknown reset_type\n",
3099                     ioc->name, __func__);
3100                 return -EFAULT;
3101         }
3102
3103         if (!(ioc->facts.IOCCapabilities &
3104            MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
3105                 return -EFAULT;
3106
3107         printk(MPT2SAS_INFO_FMT "sending message unit reset !!\n", ioc->name);
3108
3109         writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
3110             &ioc->chip->Doorbell);
3111         if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
3112                 r = -EFAULT;
3113                 goto out;
3114         }
3115         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
3116             timeout, sleep_flag);
3117         if (ioc_state) {
3118                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3119                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3120                 r = -EFAULT;
3121                 goto out;
3122         }
3123  out:
3124         printk(MPT2SAS_INFO_FMT "message unit reset: %s\n",
3125             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
3126         return r;
3127 }
3128
3129 /**
3130  * _base_handshake_req_reply_wait - send request thru doorbell interface
3131  * @ioc: per adapter object
3132  * @request_bytes: request length
3133  * @request: pointer having request payload
3134  * @reply_bytes: reply length
3135  * @reply: pointer to reply payload
3136  * @timeout: timeout in second
3137  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3138  *
3139  * Returns 0 for success, non-zero for failure.
3140  */
3141 static int
3142 _base_handshake_req_reply_wait(struct MPT2SAS_ADAPTER *ioc, int request_bytes,
3143     u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
3144 {
3145         MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
3146         int i;
3147         u8 failed;
3148         u16 dummy;
3149         __le32 *mfp;
3150
3151         /* make sure doorbell is not in use */
3152         if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
3153                 printk(MPT2SAS_ERR_FMT "doorbell is in use "
3154                     " (line=%d)\n", ioc->name, __LINE__);
3155                 return -EFAULT;
3156         }
3157
3158         /* clear pending doorbell interrupts from previous state changes */
3159         if (readl(&ioc->chip->HostInterruptStatus) &
3160             MPI2_HIS_IOC2SYS_DB_STATUS)
3161                 writel(0, &ioc->chip->HostInterruptStatus);
3162
3163         /* send message to ioc */
3164         writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
3165             ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
3166             &ioc->chip->Doorbell);
3167
3168         if ((_base_wait_for_doorbell_int(ioc, 5, NO_SLEEP))) {
3169                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3170                    "int failed (line=%d)\n", ioc->name, __LINE__);
3171                 return -EFAULT;
3172         }
3173         writel(0, &ioc->chip->HostInterruptStatus);
3174
3175         if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
3176                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3177                     "ack failed (line=%d)\n", ioc->name, __LINE__);
3178                 return -EFAULT;
3179         }
3180
3181         /* send message 32-bits at a time */
3182         for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
3183                 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
3184                 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
3185                         failed = 1;
3186         }
3187
3188         if (failed) {
3189                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3190                     "sending request failed (line=%d)\n", ioc->name, __LINE__);
3191                 return -EFAULT;
3192         }
3193
3194         /* now wait for the reply */
3195         if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
3196                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3197                    "int failed (line=%d)\n", ioc->name, __LINE__);
3198                 return -EFAULT;
3199         }
3200
3201         /* read the first two 16-bits, it gives the total length of the reply */
3202         reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3203             & MPI2_DOORBELL_DATA_MASK);
3204         writel(0, &ioc->chip->HostInterruptStatus);
3205         if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3206                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3207                    "int failed (line=%d)\n", ioc->name, __LINE__);
3208                 return -EFAULT;
3209         }
3210         reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3211             & MPI2_DOORBELL_DATA_MASK);
3212         writel(0, &ioc->chip->HostInterruptStatus);
3213
3214         for (i = 2; i < default_reply->MsgLength * 2; i++)  {
3215                 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3216                         printk(MPT2SAS_ERR_FMT "doorbell "
3217                             "handshake int failed (line=%d)\n", ioc->name,
3218                             __LINE__);
3219                         return -EFAULT;
3220                 }
3221                 if (i >=  reply_bytes/2) /* overflow case */
3222                         dummy = readl(&ioc->chip->Doorbell);
3223                 else
3224                         reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3225                             & MPI2_DOORBELL_DATA_MASK);
3226                 writel(0, &ioc->chip->HostInterruptStatus);
3227         }
3228
3229         _base_wait_for_doorbell_int(ioc, 5, sleep_flag);
3230         if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
3231                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "doorbell is in use "
3232                     " (line=%d)\n", ioc->name, __LINE__));
3233         }
3234         writel(0, &ioc->chip->HostInterruptStatus);
3235
3236         if (ioc->logging_level & MPT_DEBUG_INIT) {
3237                 mfp = (__le32 *)reply;
3238                 printk(KERN_INFO "\toffset:data\n");
3239                 for (i = 0; i < reply_bytes/4; i++)
3240                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3241                             le32_to_cpu(mfp[i]));
3242         }
3243         return 0;
3244 }
3245
3246 /**
3247  * mpt2sas_base_sas_iounit_control - send sas iounit control to FW
3248  * @ioc: per adapter object
3249  * @mpi_reply: the reply payload from FW
3250  * @mpi_request: the request payload sent to FW
3251  *
3252  * The SAS IO Unit Control Request message allows the host to perform low-level
3253  * operations, such as resets on the PHYs of the IO Unit, also allows the host
3254  * to obtain the IOC assigned device handles for a device if it has other
3255  * identifying information about the device, in addition allows the host to
3256  * remove IOC resources associated with the device.
3257  *
3258  * Returns 0 for success, non-zero for failure.
3259  */
3260 int
3261 mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
3262     Mpi2SasIoUnitControlReply_t *mpi_reply,
3263     Mpi2SasIoUnitControlRequest_t *mpi_request)
3264 {
3265         u16 smid;
3266         u32 ioc_state;
3267         unsigned long timeleft;
3268         bool issue_reset = false;
3269         int rc;
3270         void *request;
3271         u16 wait_state_count;
3272
3273         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3274             __func__));
3275
3276         mutex_lock(&ioc->base_cmds.mutex);
3277
3278         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3279                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3280                     ioc->name, __func__);
3281                 rc = -EAGAIN;
3282                 goto out;
3283         }
3284
3285         wait_state_count = 0;
3286         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3287         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3288                 if (wait_state_count++ == 10) {
3289                         printk(MPT2SAS_ERR_FMT
3290                             "%s: failed due to ioc not operational\n",
3291                             ioc->name, __func__);
3292                         rc = -EFAULT;
3293                         goto out;
3294                 }
3295                 ssleep(1);
3296                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3297                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3298                     "operational state(count=%d)\n", ioc->name,
3299                     __func__, wait_state_count);
3300         }
3301
3302         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3303         if (!smid) {
3304                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3305                     ioc->name, __func__);
3306                 rc = -EAGAIN;
3307                 goto out;
3308         }
3309
3310         rc = 0;
3311         ioc->base_cmds.status = MPT2_CMD_PENDING;
3312         request = mpt2sas_base_get_msg_frame(ioc, smid);
3313         ioc->base_cmds.smid = smid;
3314         memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
3315         if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3316             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
3317                 ioc->ioc_link_reset_in_progress = 1;
3318         init_completion(&ioc->base_cmds.done);
3319         mpt2sas_base_put_smid_default(ioc, smid);
3320         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3321             msecs_to_jiffies(10000));
3322         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3323             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
3324             ioc->ioc_link_reset_in_progress)
3325                 ioc->ioc_link_reset_in_progress = 0;
3326         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3327                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3328                     ioc->name, __func__);
3329                 _debug_dump_mf(mpi_request,
3330                     sizeof(Mpi2SasIoUnitControlRequest_t)/4);
3331                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3332                         issue_reset = true;
3333                 goto issue_host_reset;
3334         }
3335         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3336                 memcpy(mpi_reply, ioc->base_cmds.reply,
3337                     sizeof(Mpi2SasIoUnitControlReply_t));
3338         else
3339                 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
3340         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3341         goto out;
3342
3343  issue_host_reset:
3344         if (issue_reset)
3345                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3346                     FORCE_BIG_HAMMER);
3347         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3348         rc = -EFAULT;
3349  out:
3350         mutex_unlock(&ioc->base_cmds.mutex);
3351         return rc;
3352 }
3353
3354
3355 /**
3356  * mpt2sas_base_scsi_enclosure_processor - sending request to sep device
3357  * @ioc: per adapter object
3358  * @mpi_reply: the reply payload from FW
3359  * @mpi_request: the request payload sent to FW
3360  *
3361  * The SCSI Enclosure Processor request message causes the IOC to
3362  * communicate with SES devices to control LED status signals.
3363  *
3364  * Returns 0 for success, non-zero for failure.
3365  */
3366 int
3367 mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
3368     Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
3369 {
3370         u16 smid;
3371         u32 ioc_state;
3372         unsigned long timeleft;
3373         bool issue_reset = false;
3374         int rc;
3375         void *request;
3376         u16 wait_state_count;
3377
3378         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3379             __func__));
3380
3381         mutex_lock(&ioc->base_cmds.mutex);
3382
3383         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3384                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3385                     ioc->name, __func__);
3386                 rc = -EAGAIN;
3387                 goto out;
3388         }
3389
3390         wait_state_count = 0;
3391         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3392         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3393                 if (wait_state_count++ == 10) {
3394                         printk(MPT2SAS_ERR_FMT
3395                             "%s: failed due to ioc not operational\n",
3396                             ioc->name, __func__);
3397                         rc = -EFAULT;
3398                         goto out;
3399                 }
3400                 ssleep(1);
3401                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3402                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3403                     "operational state(count=%d)\n", ioc->name,
3404                     __func__, wait_state_count);
3405         }
3406
3407         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3408         if (!smid) {
3409                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3410                     ioc->name, __func__);
3411                 rc = -EAGAIN;
3412                 goto out;
3413         }
3414
3415         rc = 0;
3416         ioc->base_cmds.status = MPT2_CMD_PENDING;
3417         request = mpt2sas_base_get_msg_frame(ioc, smid);
3418         ioc->base_cmds.smid = smid;
3419         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
3420         init_completion(&ioc->base_cmds.done);
3421         mpt2sas_base_put_smid_default(ioc, smid);
3422         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3423             msecs_to_jiffies(10000));
3424         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3425                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3426                     ioc->name, __func__);
3427                 _debug_dump_mf(mpi_request,
3428                     sizeof(Mpi2SepRequest_t)/4);
3429                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3430                         issue_reset = true;
3431                 goto issue_host_reset;
3432         }
3433         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3434                 memcpy(mpi_reply, ioc->base_cmds.reply,
3435                     sizeof(Mpi2SepReply_t));
3436         else
3437                 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
3438         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3439         goto out;
3440
3441  issue_host_reset:
3442         if (issue_reset)
3443                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3444                     FORCE_BIG_HAMMER);
3445         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3446         rc = -EFAULT;
3447  out:
3448         mutex_unlock(&ioc->base_cmds.mutex);
3449         return rc;
3450 }
3451
3452 /**
3453  * _base_get_port_facts - obtain port facts reply and save in ioc
3454  * @ioc: per adapter object
3455  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3456  *
3457  * Returns 0 for success, non-zero for failure.
3458  */
3459 static int
3460 _base_get_port_facts(struct MPT2SAS_ADAPTER *ioc, int port, int sleep_flag)
3461 {
3462         Mpi2PortFactsRequest_t mpi_request;
3463         Mpi2PortFactsReply_t mpi_reply;
3464         struct mpt2sas_port_facts *pfacts;
3465         int mpi_reply_sz, mpi_request_sz, r;
3466
3467         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3468             __func__));
3469
3470         mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
3471         mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
3472         memset(&mpi_request, 0, mpi_request_sz);
3473         mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
3474         mpi_request.PortNumber = port;
3475         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3476             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3477
3478         if (r != 0) {
3479                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3480                     ioc->name, __func__, r);
3481                 return r;
3482         }
3483
3484         pfacts = &ioc->pfacts[port];
3485         memset(pfacts, 0, sizeof(struct mpt2sas_port_facts));
3486         pfacts->PortNumber = mpi_reply.PortNumber;
3487         pfacts->VP_ID = mpi_reply.VP_ID;
3488         pfacts->VF_ID = mpi_reply.VF_ID;
3489         pfacts->MaxPostedCmdBuffers =
3490             le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
3491
3492         return 0;
3493 }
3494
3495 /**
3496  * _base_wait_for_iocstate - Wait until the card is in READY or OPERATIONAL
3497  * @ioc: per adapter object
3498  * @timeout:
3499  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3500  *
3501  * Returns 0 for success, non-zero for failure.
3502  */
3503 static int
3504 _base_wait_for_iocstate(struct MPT2SAS_ADAPTER *ioc, int timeout,
3505         int sleep_flag)
3506 {
3507         u32 ioc_state, doorbell;
3508         int rc;
3509
3510         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3511             __func__));
3512
3513         if (ioc->pci_error_recovery)
3514                 return 0;
3515
3516         doorbell = mpt2sas_base_get_iocstate(ioc, 0);
3517         ioc_state = doorbell & MPI2_IOC_STATE_MASK;
3518         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: ioc_state(0x%08x)\n",
3519             ioc->name, __func__, ioc_state));
3520
3521         switch (ioc_state) {
3522         case MPI2_IOC_STATE_READY:
3523         case MPI2_IOC_STATE_OPERATIONAL:
3524                 return 0;
3525         }
3526
3527         if (doorbell & MPI2_DOORBELL_USED) {
3528                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT
3529                     "unexpected doorbell activ!e\n", ioc->name));
3530                 goto issue_diag_reset;
3531         }
3532
3533         if (ioc_state == MPI2_IOC_STATE_FAULT) {
3534                 mpt2sas_base_fault_info(ioc, doorbell &
3535                     MPI2_DOORBELL_DATA_MASK);
3536                 goto issue_diag_reset;
3537         }
3538
3539         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
3540             timeout, sleep_flag);
3541         if (ioc_state) {
3542                 printk(MPT2SAS_ERR_FMT
3543                     "%s: failed going to ready state (ioc_state=0x%x)\n",
3544                     ioc->name, __func__, ioc_state);
3545                 return -EFAULT;
3546         }
3547
3548  issue_diag_reset:
3549         rc = _base_diag_reset(ioc, sleep_flag);
3550         return rc;
3551 }
3552
3553 /**
3554  * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
3555  * @ioc: per adapter object
3556  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3557  *
3558  * Returns 0 for success, non-zero for failure.
3559  */
3560 static int
3561 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3562 {
3563         Mpi2IOCFactsRequest_t mpi_request;
3564         Mpi2IOCFactsReply_t mpi_reply;
3565         struct mpt2sas_facts *facts;
3566         int mpi_reply_sz, mpi_request_sz, r;
3567
3568         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3569             __func__));
3570
3571         r = _base_wait_for_iocstate(ioc, 10, sleep_flag);
3572         if (r) {
3573                 printk(MPT2SAS_ERR_FMT "%s: failed getting to correct state\n",
3574                         ioc->name, __func__);
3575                 return r;
3576         }
3577
3578         mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
3579         mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
3580         memset(&mpi_request, 0, mpi_request_sz);
3581         mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
3582         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3583             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3584
3585         if (r != 0) {
3586                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3587                     ioc->name, __func__, r);
3588                 return r;
3589         }
3590
3591         facts = &ioc->facts;
3592         memset(facts, 0, sizeof(struct mpt2sas_facts));
3593         facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
3594         facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
3595         facts->VP_ID = mpi_reply.VP_ID;
3596         facts->VF_ID = mpi_reply.VF_ID;
3597         facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
3598         facts->MaxChainDepth = mpi_reply.MaxChainDepth;
3599         facts->WhoInit = mpi_reply.WhoInit;
3600         facts->NumberOfPorts = mpi_reply.NumberOfPorts;
3601         facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors;
3602         facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
3603         facts->MaxReplyDescriptorPostQueueDepth =
3604             le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
3605         facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
3606         facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
3607         if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
3608                 ioc->ir_firmware = 1;
3609         if ((facts->IOCCapabilities &
3610               MPI2_IOCFACTS_CAPABILITY_RDPQ_ARRAY_CAPABLE))
3611                 ioc->rdpq_array_capable = 1;
3612         facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
3613         facts->IOCRequestFrameSize =
3614             le16_to_cpu(mpi_reply.IOCRequestFrameSize);
3615         facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
3616         facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
3617         ioc->shost->max_id = -1;
3618         facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
3619         facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
3620         facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
3621         facts->HighPriorityCredit =
3622             le16_to_cpu(mpi_reply.HighPriorityCredit);
3623         facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
3624         facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
3625
3626         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hba queue depth(%d), "
3627             "max chains per io(%d)\n", ioc->name, facts->RequestCredit,
3628             facts->MaxChainDepth));
3629         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request frame size(%d), "
3630             "reply frame size(%d)\n", ioc->name,
3631             facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
3632         return 0;
3633 }
3634
3635 /**
3636  * _base_send_ioc_init - send ioc_init to firmware
3637  * @ioc: per adapter object
3638  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3639  *
3640  * Returns 0 for success, non-zero for failure.
3641  */
3642 static int
3643 _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3644 {
3645         Mpi2IOCInitRequest_t mpi_request;
3646         Mpi2IOCInitReply_t mpi_reply;
3647         int i, r = 0;
3648         struct timeval current_time;
3649         u16 ioc_status;
3650         u32 reply_post_free_array_sz = 0;
3651         Mpi2IOCInitRDPQArrayEntry *reply_post_free_array = NULL;
3652         dma_addr_t reply_post_free_array_dma;
3653
3654         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3655             __func__));
3656
3657         memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
3658         mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
3659         mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
3660         mpi_request.VF_ID = 0; /* TODO */
3661         mpi_request.VP_ID = 0;
3662         mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
3663         mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
3664
3665         if (_base_is_controller_msix_enabled(ioc))
3666                 mpi_request.HostMSIxVectors = ioc->reply_queue_count;
3667         mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
3668         mpi_request.ReplyDescriptorPostQueueDepth =
3669             cpu_to_le16(ioc->reply_post_queue_depth);
3670         mpi_request.ReplyFreeQueueDepth =
3671             cpu_to_le16(ioc->reply_free_queue_depth);
3672
3673         mpi_request.SenseBufferAddressHigh =
3674             cpu_to_le32((u64)ioc->sense_dma >> 32);
3675         mpi_request.SystemReplyAddressHigh =
3676             cpu_to_le32((u64)ioc->reply_dma >> 32);
3677         mpi_request.SystemRequestFrameBaseAddress =
3678             cpu_to_le64((u64)ioc->request_dma);
3679         mpi_request.ReplyFreeQueueAddress =
3680             cpu_to_le64((u64)ioc->reply_free_dma);
3681
3682         if (ioc->rdpq_array_enable) {
3683                 reply_post_free_array_sz = ioc->reply_queue_count *
3684                     sizeof(Mpi2IOCInitRDPQArrayEntry);
3685                 reply_post_free_array = pci_alloc_consistent(ioc->pdev,
3686                         reply_post_free_array_sz, &reply_post_free_array_dma);
3687                 if (!reply_post_free_array) {
3688                         printk(MPT2SAS_ERR_FMT
3689                         "reply_post_free_array: pci_alloc_consistent failed\n",
3690                         ioc->name);
3691                         r = -ENOMEM;
3692                         goto out;
3693                 }
3694                 memset(reply_post_free_array, 0, reply_post_free_array_sz);
3695                 for (i = 0; i < ioc->reply_queue_count; i++)
3696                         reply_post_free_array[i].RDPQBaseAddress =
3697                             cpu_to_le64(
3698                                 (u64)ioc->reply_post[i].reply_post_free_dma);
3699                 mpi_request.MsgFlags = MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE;
3700                 mpi_request.ReplyDescriptorPostQueueAddress =
3701                     cpu_to_le64((u64)reply_post_free_array_dma);
3702         } else {
3703                 mpi_request.ReplyDescriptorPostQueueAddress =
3704                     cpu_to_le64((u64)ioc->reply_post[0].reply_post_free_dma);
3705         }
3706
3707         /* This time stamp specifies number of milliseconds
3708          * since epoch ~ midnight January 1, 1970.
3709          */
3710         do_gettimeofday(&current_time);
3711         mpi_request.TimeStamp = cpu_to_le64((u64)current_time.tv_sec * 1000 +
3712             (current_time.tv_usec / 1000));
3713
3714         if (ioc->logging_level & MPT_DEBUG_INIT) {
3715                 __le32 *mfp;
3716                 int i;
3717
3718                 mfp = (__le32 *)&mpi_request;
3719                 printk(KERN_INFO "\toffset:data\n");
3720                 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
3721                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3722                             le32_to_cpu(mfp[i]));
3723         }
3724
3725         r = _base_handshake_req_reply_wait(ioc,
3726             sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
3727             sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
3728             sleep_flag);
3729
3730         if (r != 0) {
3731                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3732                     ioc->name, __func__, r);
3733                 goto out;
3734         }
3735
3736         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
3737         if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
3738             mpi_reply.IOCLogInfo) {
3739                 printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
3740                 r = -EIO;
3741         }
3742
3743 out:
3744         if (reply_post_free_array)
3745                 pci_free_consistent(ioc->pdev, reply_post_free_array_sz,
3746                                     reply_post_free_array,
3747                                     reply_post_free_array_dma);
3748         return r;
3749 }
3750
3751 /**
3752  * mpt2sas_port_enable_done - command completion routine for port enable
3753  * @ioc: per adapter object
3754  * @smid: system request message index
3755  * @msix_index: MSIX table index supplied by the OS
3756  * @reply: reply message frame(lower 32bit addr)
3757  *
3758  * Return 1 meaning mf should be freed from _base_interrupt
3759  *        0 means the mf is freed from this function.
3760  */
3761 u8
3762 mpt2sas_port_enable_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3763         u32 reply)
3764 {
3765         MPI2DefaultReply_t *mpi_reply;
3766         u16 ioc_status;
3767
3768         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
3769         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
3770                 return 1;
3771
3772         if (ioc->port_enable_cmds.status == MPT2_CMD_NOT_USED)
3773                 return 1;
3774
3775         ioc->port_enable_cmds.status |= MPT2_CMD_COMPLETE;
3776         if (mpi_reply) {
3777                 ioc->port_enable_cmds.status |= MPT2_CMD_REPLY_VALID;
3778                 memcpy(ioc->port_enable_cmds.reply, mpi_reply,
3779                     mpi_reply->MsgLength*4);
3780         }
3781         ioc->port_enable_cmds.status &= ~MPT2_CMD_PENDING;
3782
3783         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3784
3785         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
3786                 ioc->port_enable_failed = 1;
3787
3788         if (ioc->is_driver_loading) {
3789                 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
3790                         mpt2sas_port_enable_complete(ioc);
3791                         return 1;
3792                 } else {
3793                         ioc->start_scan_failed = ioc_status;
3794                         ioc->start_scan = 0;
3795                         return 1;
3796                 }
3797         }
3798         complete(&ioc->port_enable_cmds.done);
3799         return 1;
3800 }
3801
3802
3803 /**
3804  * _base_send_port_enable - send port_enable(discovery stuff) to firmware
3805  * @ioc: per adapter object
3806  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3807  *
3808  * Returns 0 for success, non-zero for failure.
3809  */
3810 static int
3811 _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3812 {
3813         Mpi2PortEnableRequest_t *mpi_request;
3814         Mpi2PortEnableReply_t *mpi_reply;
3815         unsigned long timeleft;
3816         int r = 0;
3817         u16 smid;
3818         u16 ioc_status;
3819
3820         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3821
3822         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3823                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3824                     ioc->name, __func__);
3825                 return -EAGAIN;
3826         }
3827
3828         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3829         if (!smid) {
3830                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3831                     ioc->name, __func__);
3832                 return -EAGAIN;
3833         }
3834
3835         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3836         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3837         ioc->port_enable_cmds.smid = smid;
3838         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3839         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3840
3841         init_completion(&ioc->port_enable_cmds.done);
3842         mpt2sas_base_put_smid_default(ioc, smid);
3843         timeleft = wait_for_completion_timeout(&ioc->port_enable_cmds.done,
3844             300*HZ);
3845         if (!(ioc->port_enable_cmds.status & MPT2_CMD_COMPLETE)) {
3846                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3847                     ioc->name, __func__);
3848                 _debug_dump_mf(mpi_request,
3849                     sizeof(Mpi2PortEnableRequest_t)/4);
3850                 if (ioc->port_enable_cmds.status & MPT2_CMD_RESET)
3851                         r = -EFAULT;
3852                 else
3853                         r = -ETIME;
3854                 goto out;
3855         }
3856         mpi_reply = ioc->port_enable_cmds.reply;
3857
3858         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3859         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
3860                 printk(MPT2SAS_ERR_FMT "%s: failed with (ioc_status=0x%08x)\n",
3861                     ioc->name, __func__, ioc_status);
3862                 r = -EFAULT;
3863                 goto out;
3864         }
3865  out:
3866         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
3867         printk(MPT2SAS_INFO_FMT "port enable: %s\n", ioc->name, ((r == 0) ?
3868             "SUCCESS" : "FAILED"));
3869         return r;
3870 }
3871
3872 /**
3873  * mpt2sas_port_enable - initiate firmware discovery (don't wait for reply)
3874  * @ioc: per adapter object
3875  *
3876  * Returns 0 for success, non-zero for failure.
3877  */
3878 int
3879 mpt2sas_port_enable(struct MPT2SAS_ADAPTER *ioc)
3880 {
3881         Mpi2PortEnableRequest_t *mpi_request;
3882         u16 smid;
3883
3884         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3885
3886         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3887                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3888                     ioc->name, __func__);
3889                 return -EAGAIN;
3890         }
3891
3892         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3893         if (!smid) {
3894                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3895                     ioc->name, __func__);
3896                 return -EAGAIN;
3897         }
3898
3899         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3900         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3901         ioc->port_enable_cmds.smid = smid;
3902         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3903         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3904
3905         mpt2sas_base_put_smid_default(ioc, smid);
3906         return 0;
3907 }
3908
3909 /**
3910  * _base_determine_wait_on_discovery - desposition
3911  * @ioc: per adapter object
3912  *
3913  * Decide whether to wait on discovery to complete. Used to either
3914  * locate boot device, or report volumes ahead of physical devices.
3915  *
3916  * Returns 1 for wait, 0 for don't wait
3917  */
3918 static int
3919 _base_determine_wait_on_discovery(struct MPT2SAS_ADAPTER *ioc)
3920 {
3921         /* We wait for discovery to complete if IR firmware is loaded.
3922          * The sas topology events arrive before PD events, so we need time to
3923          * turn on the bit in ioc->pd_handles to indicate PD
3924          * Also, it maybe required to report Volumes ahead of physical
3925          * devices when MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING is set.
3926          */
3927         if (ioc->ir_firmware)
3928                 return 1;
3929
3930         /* if no Bios, then we don't need to wait */
3931         if (!ioc->bios_pg3.BiosVersion)
3932                 return 0;
3933
3934         /* Bios is present, then we drop down here.
3935          *
3936          * If there any entries in the Bios Page 2, then we wait
3937          * for discovery to complete.
3938          */
3939
3940         /* Current Boot Device */
3941         if ((ioc->bios_pg2.CurrentBootDeviceForm &
3942             MPI2_BIOSPAGE2_FORM_MASK) ==
3943             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3944         /* Request Boot Device */
3945            (ioc->bios_pg2.ReqBootDeviceForm &
3946             MPI2_BIOSPAGE2_FORM_MASK) ==
3947             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3948         /* Alternate Request Boot Device */
3949            (ioc->bios_pg2.ReqAltBootDeviceForm &
3950             MPI2_BIOSPAGE2_FORM_MASK) ==
3951             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED)
3952                 return 0;
3953
3954         return 1;
3955 }
3956
3957
3958 /**
3959  * _base_unmask_events - turn on notification for this event
3960  * @ioc: per adapter object
3961  * @event: firmware event
3962  *
3963  * The mask is stored in ioc->event_masks.
3964  */
3965 static void
3966 _base_unmask_events(struct MPT2SAS_ADAPTER *ioc, u16 event)
3967 {
3968         u32 desired_event;
3969
3970         if (event >= 128)
3971                 return;
3972
3973         desired_event = (1 << (event % 32));
3974
3975         if (event < 32)
3976                 ioc->event_masks[0] &= ~desired_event;
3977         else if (event < 64)
3978                 ioc->event_masks[1] &= ~desired_event;
3979         else if (event < 96)
3980                 ioc->event_masks[2] &= ~desired_event;
3981         else if (event < 128)
3982                 ioc->event_masks[3] &= ~desired_event;
3983 }
3984
3985 /**
3986  * _base_event_notification - send event notification
3987  * @ioc: per adapter object
3988  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3989  *
3990  * Returns 0 for success, non-zero for failure.
3991  */
3992 static int
3993 _base_event_notification(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3994 {
3995         Mpi2EventNotificationRequest_t *mpi_request;
3996         unsigned long timeleft;
3997         u16 smid;
3998         int r = 0;
3999         int i;
4000
4001         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4002             __func__));
4003
4004         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
4005                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
4006                     ioc->name, __func__);
4007                 return -EAGAIN;
4008         }
4009
4010         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
4011         if (!smid) {
4012                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
4013                     ioc->name, __func__);
4014                 return -EAGAIN;
4015         }
4016         ioc->base_cmds.status = MPT2_CMD_PENDING;
4017         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
4018         ioc->base_cmds.smid = smid;
4019         memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
4020         mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
4021         mpi_request->VF_ID = 0; /* TODO */
4022         mpi_request->VP_ID = 0;
4023         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4024                 mpi_request->EventMasks[i] =
4025                     cpu_to_le32(ioc->event_masks[i]);
4026         init_completion(&ioc->base_cmds.done);
4027         mpt2sas_base_put_smid_default(ioc, smid);
4028         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
4029         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
4030                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
4031                     ioc->name, __func__);
4032                 _debug_dump_mf(mpi_request,
4033                     sizeof(Mpi2EventNotificationRequest_t)/4);
4034                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
4035                         r = -EFAULT;
4036                 else
4037                         r = -ETIME;
4038         } else
4039                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: complete\n",
4040                     ioc->name, __func__));
4041         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
4042         return r;
4043 }
4044
4045 /**
4046  * mpt2sas_base_validate_event_type - validating event types
4047  * @ioc: per adapter object
4048  * @event: firmware event
4049  *
4050  * This will turn on firmware event notification when application
4051  * ask for that event. We don't mask events that are already enabled.
4052  */
4053 void
4054 mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type)
4055 {
4056         int i, j;
4057         u32 event_mask, desired_event;
4058         u8 send_update_to_fw;
4059
4060         for (i = 0, send_update_to_fw = 0; i <
4061             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
4062                 event_mask = ~event_type[i];
4063                 desired_event = 1;
4064                 for (j = 0; j < 32; j++) {
4065                         if (!(event_mask & desired_event) &&
4066                             (ioc->event_masks[i] & desired_event)) {
4067                                 ioc->event_masks[i] &= ~desired_event;
4068                                 send_update_to_fw = 1;
4069                         }
4070                         desired_event = (desired_event << 1);
4071                 }
4072         }
4073
4074         if (!send_update_to_fw)
4075                 return;
4076
4077         mutex_lock(&ioc->base_cmds.mutex);
4078         _base_event_notification(ioc, CAN_SLEEP);
4079         mutex_unlock(&ioc->base_cmds.mutex);
4080 }
4081
4082 /**
4083  * _base_diag_reset - the "big hammer" start of day reset
4084  * @ioc: per adapter object
4085  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4086  *
4087  * Returns 0 for success, non-zero for failure.
4088  */
4089 static int
4090 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4091 {
4092         u32 host_diagnostic;
4093         u32 ioc_state;
4094         u32 count;
4095         u32 hcb_size;
4096
4097         printk(MPT2SAS_INFO_FMT "sending diag reset !!\n", ioc->name);
4098         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "clear interrupts\n",
4099             ioc->name));
4100
4101         count = 0;
4102         do {
4103                 /* Write magic sequence to WriteSequence register
4104                  * Loop until in diagnostic mode
4105                  */
4106                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "write magic "
4107                     "sequence\n", ioc->name));
4108                 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
4109                 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
4110                 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
4111                 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
4112                 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
4113                 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
4114                 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
4115
4116                 /* wait 100 msec */
4117                 if (sleep_flag == CAN_SLEEP)
4118                         msleep(100);
4119                 else
4120                         mdelay(100);
4121
4122                 if (count++ > 20)
4123                         goto out;
4124
4125                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
4126                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "wrote magic "
4127                     "sequence: count(%d), host_diagnostic(0x%08x)\n",
4128                     ioc->name, count, host_diagnostic));
4129
4130         } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
4131
4132         hcb_size = readl(&ioc->chip->HCBSize);
4133
4134         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "diag reset: issued\n",
4135             ioc->name));
4136         writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
4137              &ioc->chip->HostDiagnostic);
4138
4139         /* This delay allows the chip PCIe hardware time to finish reset tasks*/
4140         if (sleep_flag == CAN_SLEEP)
4141                 msleep(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000);
4142         else
4143                 mdelay(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000);
4144
4145         /* Approximately 300 second max wait */
4146         for (count = 0; count < (300000000 /
4147             MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC); count++) {
4148
4149                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
4150
4151                 if (host_diagnostic == 0xFFFFFFFF)
4152                         goto out;
4153                 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
4154                         break;
4155
4156                 /* Wait to pass the second read delay window */
4157                 if (sleep_flag == CAN_SLEEP)
4158                         msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC
4159                                /1000);
4160                 else
4161                         mdelay(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC
4162                                /1000);
4163         }
4164
4165         if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
4166
4167                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter "
4168                     "assuming the HCB Address points to good F/W\n",
4169                     ioc->name));
4170                 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
4171                 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
4172                 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
4173
4174                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT
4175                     "re-enable the HCDW\n", ioc->name));
4176                 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
4177                     &ioc->chip->HCBSize);
4178         }
4179
4180         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter\n",
4181             ioc->name));
4182         writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
4183             &ioc->chip->HostDiagnostic);
4184
4185         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "disable writes to the "
4186             "diagnostic register\n", ioc->name));
4187         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
4188
4189         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "Wait for FW to go to the "
4190             "READY state\n", ioc->name));
4191         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
4192             sleep_flag);
4193         if (ioc_state) {
4194                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
4195                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
4196                 goto out;
4197         }
4198
4199         printk(MPT2SAS_INFO_FMT "diag reset: SUCCESS\n", ioc->name);
4200         return 0;
4201
4202  out:
4203         printk(MPT2SAS_ERR_FMT "diag reset: FAILED\n", ioc->name);
4204         return -EFAULT;
4205 }
4206
4207 /**
4208  * _base_make_ioc_ready - put controller in READY state
4209  * @ioc: per adapter object
4210  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4211  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4212  *
4213  * Returns 0 for success, non-zero for failure.
4214  */
4215 static int
4216 _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4217     enum reset_type type)
4218 {
4219         u32 ioc_state;
4220         int rc;
4221
4222         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4223             __func__));
4224
4225         if (ioc->pci_error_recovery)
4226                 return 0;
4227
4228         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4229         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: ioc_state(0x%08x)\n",
4230             ioc->name, __func__, ioc_state));
4231
4232         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
4233                 return 0;
4234
4235         if (ioc_state & MPI2_DOORBELL_USED) {
4236                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "unexpected doorbell "
4237                     "active!\n", ioc->name));
4238                 goto issue_diag_reset;
4239         }
4240
4241         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
4242                 mpt2sas_base_fault_info(ioc, ioc_state &
4243                     MPI2_DOORBELL_DATA_MASK);
4244                 goto issue_diag_reset;
4245         }
4246
4247         if (type == FORCE_BIG_HAMMER)
4248                 goto issue_diag_reset;
4249
4250         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
4251                 if (!(_base_send_ioc_reset(ioc,
4252                     MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP))) {
4253                         ioc->ioc_reset_count++;
4254                         return 0;
4255         }
4256
4257  issue_diag_reset:
4258         rc = _base_diag_reset(ioc, CAN_SLEEP);
4259         ioc->ioc_reset_count++;
4260         return rc;
4261 }
4262
4263 /**
4264  * _base_make_ioc_operational - put controller in OPERATIONAL state
4265  * @ioc: per adapter object
4266  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4267  *
4268  * Returns 0 for success, non-zero for failure.
4269  */
4270 static int
4271 _base_make_ioc_operational(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4272 {
4273         int r, i;
4274         unsigned long   flags;
4275         u32 reply_address;
4276         u16 smid;
4277         struct _tr_list *delayed_tr, *delayed_tr_next;
4278         u8 hide_flag;
4279         struct adapter_reply_queue *reply_q;
4280         long reply_post_free;
4281         u32 reply_post_free_sz, index = 0;
4282
4283         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4284             __func__));
4285
4286         /* clean the delayed target reset list */
4287         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4288             &ioc->delayed_tr_list, list) {
4289                 list_del(&delayed_tr->list);
4290                 kfree(delayed_tr);
4291         }
4292
4293         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4294             &ioc->delayed_tr_volume_list, list) {
4295                 list_del(&delayed_tr->list);
4296                 kfree(delayed_tr);
4297         }
4298
4299         /* initialize the scsi lookup free list */
4300         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4301         INIT_LIST_HEAD(&ioc->free_list);
4302         smid = 1;
4303         for (i = 0; i < ioc->scsiio_depth; i++, smid++) {
4304                 INIT_LIST_HEAD(&ioc->scsi_lookup[i].chain_list);
4305                 ioc->scsi_lookup[i].cb_idx = 0xFF;
4306                 ioc->scsi_lookup[i].smid = smid;
4307                 ioc->scsi_lookup[i].scmd = NULL;
4308                 ioc->scsi_lookup[i].direct_io = 0;
4309                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
4310                     &ioc->free_list);
4311         }
4312
4313         /* hi-priority queue */
4314         INIT_LIST_HEAD(&ioc->hpr_free_list);
4315         smid = ioc->hi_priority_smid;
4316         for (i = 0; i < ioc->hi_priority_depth; i++, smid++) {
4317                 ioc->hpr_lookup[i].cb_idx = 0xFF;
4318                 ioc->hpr_lookup[i].smid = smid;
4319                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
4320                     &ioc->hpr_free_list);
4321         }
4322
4323         /* internal queue */
4324         INIT_LIST_HEAD(&ioc->internal_free_list);
4325         smid = ioc->internal_smid;
4326         for (i = 0; i < ioc->internal_depth; i++, smid++) {
4327                 ioc->internal_lookup[i].cb_idx = 0xFF;
4328                 ioc->internal_lookup[i].smid = smid;
4329                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
4330                     &ioc->internal_free_list);
4331         }
4332
4333         /* chain pool */
4334         INIT_LIST_HEAD(&ioc->free_chain_list);
4335         for (i = 0; i < ioc->chain_depth; i++)
4336                 list_add_tail(&ioc->chain_lookup[i].tracker_list,
4337                     &ioc->free_chain_list);
4338
4339         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4340
4341         /* initialize Reply Free Queue */
4342         for (i = 0, reply_address = (u32)ioc->reply_dma ;
4343             i < ioc->reply_free_queue_depth ; i++, reply_address +=
4344             ioc->reply_sz)
4345                 ioc->reply_free[i] = cpu_to_le32(reply_address);
4346
4347         /* initialize reply queues */
4348         if (ioc->is_driver_loading)
4349                 _base_assign_reply_queues(ioc);
4350
4351         /* initialize Reply Post Free Queue */
4352         reply_post_free_sz = ioc->reply_post_queue_depth *
4353             sizeof(Mpi2DefaultReplyDescriptor_t);
4354         reply_post_free = (long)ioc->reply_post[index].reply_post_free;
4355         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4356                 reply_q->reply_post_host_index = 0;
4357                 reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *)
4358                     reply_post_free;
4359                 for (i = 0; i < ioc->reply_post_queue_depth; i++)
4360                         reply_q->reply_post_free[i].Words =
4361                                                      cpu_to_le64(ULLONG_MAX);
4362                 if (!_base_is_controller_msix_enabled(ioc))
4363                         goto skip_init_reply_post_free_queue;
4364                 /*
4365                  * If RDPQ is enabled, switch to the next allocation.
4366                  * Otherwise advance within the contiguous region.
4367                  */
4368                 if (ioc->rdpq_array_enable)
4369                         reply_post_free = (long)
4370                             ioc->reply_post[++index].reply_post_free;
4371                 else
4372                         reply_post_free += reply_post_free_sz;
4373         }
4374  skip_init_reply_post_free_queue:
4375
4376         r = _base_send_ioc_init(ioc, sleep_flag);
4377         if (r)
4378                 return r;
4379
4380         /* initialize reply free host index */
4381         ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
4382         writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
4383
4384         /* initialize reply post host index */
4385         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4386                 writel(reply_q->msix_index << MPI2_RPHI_MSIX_INDEX_SHIFT,
4387                     &ioc->chip->ReplyPostHostIndex);
4388                 if (!_base_is_controller_msix_enabled(ioc))
4389                         goto skip_init_reply_post_host_index;
4390         }
4391
4392  skip_init_reply_post_host_index:
4393
4394         _base_unmask_interrupts(ioc);
4395
4396         r = _base_event_notification(ioc, sleep_flag);
4397         if (r)
4398                 return r;
4399
4400         if (sleep_flag == CAN_SLEEP)
4401                 _base_static_config_pages(ioc);
4402
4403
4404         if (ioc->is_driver_loading) {
4405                 if (ioc->is_warpdrive && ioc->manu_pg10.OEMIdentifier
4406                     == 0x80) {
4407                         hide_flag = (u8) (
4408                             le32_to_cpu(ioc->manu_pg10.OEMSpecificFlags0) &
4409                             MFG_PAGE10_HIDE_SSDS_MASK);
4410                         if (hide_flag != MFG_PAGE10_HIDE_SSDS_MASK)
4411                                 ioc->mfg_pg10_hide_flag = hide_flag;
4412                 }
4413                 ioc->wait_for_discovery_to_complete =
4414                     _base_determine_wait_on_discovery(ioc);
4415                 return r; /* scan_start and scan_finished support */
4416         }
4417         r = _base_send_port_enable(ioc, sleep_flag);
4418         if (r)
4419                 return r;
4420
4421         return r;
4422 }
4423
4424 /**
4425  * mpt2sas_base_free_resources - free resources controller resources (io/irq/memap)
4426  * @ioc: per adapter object
4427  *
4428  * Return nothing.
4429  */
4430 void
4431 mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
4432 {
4433         struct pci_dev *pdev = ioc->pdev;
4434
4435         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4436             __func__));
4437
4438         if (ioc->chip_phys && ioc->chip) {
4439                 _base_mask_interrupts(ioc);
4440                 ioc->shost_recovery = 1;
4441                 _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4442                 ioc->shost_recovery = 0;
4443         }
4444
4445         _base_free_irq(ioc);
4446         _base_disable_msix(ioc);
4447
4448         if (ioc->chip_phys && ioc->chip)
4449                 iounmap(ioc->chip);
4450         ioc->chip_phys = 0;
4451
4452         if (pci_is_enabled(pdev)) {
4453                 pci_release_selected_regions(ioc->pdev, ioc->bars);
4454                 pci_disable_pcie_error_reporting(pdev);
4455                 pci_disable_device(pdev);
4456         }
4457         return;
4458 }
4459
4460 /**
4461  * mpt2sas_base_attach - attach controller instance
4462  * @ioc: per adapter object
4463  *
4464  * Returns 0 for success, non-zero for failure.
4465  */
4466 int
4467 mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
4468 {
4469         int r, i;
4470         int cpu_id, last_cpu_id = 0;
4471
4472         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4473             __func__));
4474
4475         /* setup cpu_msix_table */
4476         ioc->cpu_count = num_online_cpus();
4477         for_each_online_cpu(cpu_id)
4478                 last_cpu_id = cpu_id;
4479         ioc->cpu_msix_table_sz = last_cpu_id + 1;
4480         ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL);
4481         ioc->reply_queue_count = 1;
4482         if (!ioc->cpu_msix_table) {
4483                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation for "
4484                     "cpu_msix_table failed!!!\n", ioc->name));
4485                 r = -ENOMEM;
4486                 goto out_free_resources;
4487         }
4488
4489         if (ioc->is_warpdrive) {
4490                 ioc->reply_post_host_index = kcalloc(ioc->cpu_msix_table_sz,
4491                     sizeof(resource_size_t *), GFP_KERNEL);
4492                 if (!ioc->reply_post_host_index) {
4493                         dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation "
4494                                 "for cpu_msix_table failed!!!\n", ioc->name));
4495                         r = -ENOMEM;
4496                         goto out_free_resources;
4497                 }
4498         }
4499
4500         ioc->rdpq_array_enable_assigned = 0;
4501         ioc->dma_mask = 0;
4502         r = mpt2sas_base_map_resources(ioc);
4503         if (r)
4504                 goto out_free_resources;
4505
4506         if (ioc->is_warpdrive) {
4507                 ioc->reply_post_host_index[0] = (resource_size_t __iomem *)
4508                     &ioc->chip->ReplyPostHostIndex;
4509
4510                 for (i = 1; i < ioc->cpu_msix_table_sz; i++)
4511                         ioc->reply_post_host_index[i] =
4512                         (resource_size_t __iomem *)
4513                         ((u8 __iomem *)&ioc->chip->Doorbell + (0x4000 + ((i - 1)
4514                         * 4)));
4515         }
4516
4517         pci_set_drvdata(ioc->pdev, ioc->shost);
4518         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
4519         if (r)
4520                 goto out_free_resources;
4521
4522         r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4523         if (r)
4524                 goto out_free_resources;
4525
4526         ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
4527             sizeof(struct mpt2sas_port_facts), GFP_KERNEL);
4528         if (!ioc->pfacts) {
4529                 r = -ENOMEM;
4530                 goto out_free_resources;
4531         }
4532
4533         for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
4534                 r = _base_get_port_facts(ioc, i, CAN_SLEEP);
4535                 if (r)
4536                         goto out_free_resources;
4537         }
4538
4539         r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
4540         if (r)
4541                 goto out_free_resources;
4542
4543         init_waitqueue_head(&ioc->reset_wq);
4544         /* allocate memory pd handle bitmask list */
4545         ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8);
4546         if (ioc->facts.MaxDevHandle % 8)
4547                 ioc->pd_handles_sz++;
4548         ioc->pd_handles = kzalloc(ioc->pd_handles_sz,
4549             GFP_KERNEL);
4550         if (!ioc->pd_handles) {
4551                 r = -ENOMEM;
4552                 goto out_free_resources;
4553         }
4554         ioc->blocking_handles = kzalloc(ioc->pd_handles_sz,
4555             GFP_KERNEL);
4556         if (!ioc->blocking_handles) {
4557                 r = -ENOMEM;
4558                 goto out_free_resources;
4559         }
4560         ioc->fwfault_debug = mpt2sas_fwfault_debug;
4561
4562         /* base internal command bits */
4563         mutex_init(&ioc->base_cmds.mutex);
4564         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4565         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
4566
4567         /* port_enable command bits */
4568         ioc->port_enable_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4569         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
4570
4571         /* transport internal command bits */
4572         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4573         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
4574         mutex_init(&ioc->transport_cmds.mutex);
4575
4576         /* scsih internal command bits */
4577         ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4578         ioc->scsih_cmds.status = MPT2_CMD_NOT_USED;
4579         mutex_init(&ioc->scsih_cmds.mutex);
4580
4581         /* task management internal command bits */
4582         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4583         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
4584         mutex_init(&ioc->tm_cmds.mutex);
4585
4586         /* config page internal command bits */
4587         ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4588         ioc->config_cmds.status = MPT2_CMD_NOT_USED;
4589         mutex_init(&ioc->config_cmds.mutex);
4590
4591         /* ctl module internal command bits */
4592         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4593         ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
4594         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
4595         mutex_init(&ioc->ctl_cmds.mutex);
4596
4597         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4598             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4599             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply ||
4600             !ioc->ctl_cmds.sense) {
4601                 r = -ENOMEM;
4602                 goto out_free_resources;
4603         }
4604
4605         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4606             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4607             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply) {
4608                 r = -ENOMEM;
4609                 goto out_free_resources;
4610         }
4611
4612         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4613                 ioc->event_masks[i] = -1;
4614
4615         /* here we enable the events we care about */
4616         _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
4617         _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
4618         _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
4619         _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4620         _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
4621         _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
4622         _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
4623         _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
4624         _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
4625         _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
4626         _base_unmask_events(ioc, MPI2_EVENT_TEMP_THRESHOLD);
4627         r = _base_make_ioc_operational(ioc, CAN_SLEEP);
4628         if (r)
4629                 goto out_free_resources;
4630
4631         ioc->non_operational_loop = 0;
4632
4633         return 0;
4634
4635  out_free_resources:
4636
4637         ioc->remove_host = 1;
4638         mpt2sas_base_free_resources(ioc);
4639         _base_release_memory_pools(ioc);
4640         pci_set_drvdata(ioc->pdev, NULL);
4641         kfree(ioc->cpu_msix_table);
4642         if (ioc->is_warpdrive)
4643                 kfree(ioc->reply_post_host_index);
4644         kfree(ioc->pd_handles);
4645         kfree(ioc->blocking_handles);
4646         kfree(ioc->tm_cmds.reply);
4647         kfree(ioc->transport_cmds.reply);
4648         kfree(ioc->scsih_cmds.reply);
4649         kfree(ioc->config_cmds.reply);
4650         kfree(ioc->base_cmds.reply);
4651         kfree(ioc->port_enable_cmds.reply);
4652         kfree(ioc->ctl_cmds.reply);
4653         kfree(ioc->ctl_cmds.sense);
4654         kfree(ioc->pfacts);
4655         ioc->ctl_cmds.reply = NULL;
4656         ioc->base_cmds.reply = NULL;
4657         ioc->tm_cmds.reply = NULL;
4658         ioc->scsih_cmds.reply = NULL;
4659         ioc->transport_cmds.reply = NULL;
4660         ioc->config_cmds.reply = NULL;
4661         ioc->pfacts = NULL;
4662         return r;
4663 }
4664
4665
4666 /**
4667  * mpt2sas_base_detach - remove controller instance
4668  * @ioc: per adapter object
4669  *
4670  * Return nothing.
4671  */
4672 void
4673 mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc)
4674 {
4675
4676         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4677             __func__));
4678
4679         mpt2sas_base_stop_watchdog(ioc);
4680         mpt2sas_base_free_resources(ioc);
4681         _base_release_memory_pools(ioc);
4682         pci_set_drvdata(ioc->pdev, NULL);
4683         kfree(ioc->cpu_msix_table);
4684         if (ioc->is_warpdrive)
4685                 kfree(ioc->reply_post_host_index);
4686         kfree(ioc->pd_handles);
4687         kfree(ioc->blocking_handles);
4688         kfree(ioc->pfacts);
4689         kfree(ioc->ctl_cmds.reply);
4690         kfree(ioc->ctl_cmds.sense);
4691         kfree(ioc->base_cmds.reply);
4692         kfree(ioc->port_enable_cmds.reply);
4693         kfree(ioc->tm_cmds.reply);
4694         kfree(ioc->transport_cmds.reply);
4695         kfree(ioc->scsih_cmds.reply);
4696         kfree(ioc->config_cmds.reply);
4697 }
4698
4699 /**
4700  * _base_reset_handler - reset callback handler (for base)
4701  * @ioc: per adapter object
4702  * @reset_phase: phase
4703  *
4704  * The handler for doing any required cleanup or initialization.
4705  *
4706  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
4707  * MPT2_IOC_DONE_RESET
4708  *
4709  * Return nothing.
4710  */
4711 static void
4712 _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
4713 {
4714         mpt2sas_scsih_reset_handler(ioc, reset_phase);
4715         mpt2sas_ctl_reset_handler(ioc, reset_phase);
4716         switch (reset_phase) {
4717         case MPT2_IOC_PRE_RESET:
4718                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4719                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
4720                 break;
4721         case MPT2_IOC_AFTER_RESET:
4722                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4723                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
4724                 if (ioc->transport_cmds.status & MPT2_CMD_PENDING) {
4725                         ioc->transport_cmds.status |= MPT2_CMD_RESET;
4726                         mpt2sas_base_free_smid(ioc, ioc->transport_cmds.smid);
4727                         complete(&ioc->transport_cmds.done);
4728                 }
4729                 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
4730                         ioc->base_cmds.status |= MPT2_CMD_RESET;
4731                         mpt2sas_base_free_smid(ioc, ioc->base_cmds.smid);
4732                         complete(&ioc->base_cmds.done);
4733                 }
4734                 if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
4735                         ioc->port_enable_failed = 1;
4736                         ioc->port_enable_cmds.status |= MPT2_CMD_RESET;
4737                         mpt2sas_base_free_smid(ioc, ioc->port_enable_cmds.smid);
4738                         if (ioc->is_driver_loading) {
4739                                 ioc->start_scan_failed =
4740                                     MPI2_IOCSTATUS_INTERNAL_ERROR;
4741                                 ioc->start_scan = 0;
4742                                 ioc->port_enable_cmds.status =
4743                                                 MPT2_CMD_NOT_USED;
4744                         } else
4745                                 complete(&ioc->port_enable_cmds.done);
4746
4747                 }
4748                 if (ioc->config_cmds.status & MPT2_CMD_PENDING) {
4749                         ioc->config_cmds.status |= MPT2_CMD_RESET;
4750                         mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid);
4751                         ioc->config_cmds.smid = USHRT_MAX;
4752                         complete(&ioc->config_cmds.done);
4753                 }
4754                 break;
4755         case MPT2_IOC_DONE_RESET:
4756                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4757                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
4758                 break;
4759         }
4760 }
4761
4762 /**
4763  * _wait_for_commands_to_complete - reset controller
4764  * @ioc: Pointer to MPT_ADAPTER structure
4765  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4766  *
4767  * This function waiting(3s) for all pending commands to complete
4768  * prior to putting controller in reset.
4769  */
4770 static void
4771 _wait_for_commands_to_complete(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4772 {
4773         u32 ioc_state;
4774         unsigned long flags;
4775         u16 i;
4776
4777         ioc->pending_io_count = 0;
4778         if (sleep_flag != CAN_SLEEP)
4779                 return;
4780
4781         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4782         if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
4783                 return;
4784
4785         /* pending command count */
4786         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4787         for (i = 0; i < ioc->scsiio_depth; i++)
4788                 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
4789                         ioc->pending_io_count++;
4790         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4791
4792         if (!ioc->pending_io_count)
4793                 return;
4794
4795         /* wait for pending commands to complete */
4796         wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ);
4797 }
4798
4799 /**
4800  * mpt2sas_base_hard_reset_handler - reset controller
4801  * @ioc: Pointer to MPT_ADAPTER structure
4802  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4803  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4804  *
4805  * Returns 0 for success, non-zero for failure.
4806  */
4807 int
4808 mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4809     enum reset_type type)
4810 {
4811         int r;
4812         unsigned long flags;
4813
4814         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
4815             __func__));
4816
4817         if (ioc->pci_error_recovery) {
4818                 printk(MPT2SAS_ERR_FMT "%s: pci error recovery reset\n",
4819                     ioc->name, __func__);
4820                 r = 0;
4821                 goto out_unlocked;
4822         }
4823
4824         if (mpt2sas_fwfault_debug)
4825                 mpt2sas_halt_firmware(ioc);
4826
4827         /* TODO - What we really should be doing is pulling
4828          * out all the code associated with NO_SLEEP; its never used.
4829          * That is legacy code from mpt fusion driver, ported over.
4830          * I will leave this BUG_ON here for now till its been resolved.
4831          */
4832         BUG_ON(sleep_flag == NO_SLEEP);
4833
4834         /* wait for an active reset in progress to complete */
4835         if (!mutex_trylock(&ioc->reset_in_progress_mutex)) {
4836                 do {
4837                         ssleep(1);
4838                 } while (ioc->shost_recovery == 1);
4839                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4840                     __func__));
4841                 return ioc->ioc_reset_in_progress_status;
4842         }
4843
4844         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4845         ioc->shost_recovery = 1;
4846         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4847
4848         _base_reset_handler(ioc, MPT2_IOC_PRE_RESET);
4849         _wait_for_commands_to_complete(ioc, sleep_flag);
4850         _base_mask_interrupts(ioc);
4851         r = _base_make_ioc_ready(ioc, sleep_flag, type);
4852         if (r)
4853                 goto out;
4854         _base_reset_handler(ioc, MPT2_IOC_AFTER_RESET);
4855
4856         /* If this hard reset is called while port enable is active, then
4857          * there is no reason to call make_ioc_operational
4858          */
4859         if (ioc->is_driver_loading && ioc->port_enable_failed) {
4860                 ioc->remove_host = 1;
4861                 r = -EFAULT;
4862                 goto out;
4863         }
4864
4865         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
4866         if (r)
4867                 goto out;
4868
4869         if (ioc->rdpq_array_enable && !ioc->rdpq_array_capable)
4870                 panic("%s: Issue occurred with flashing controller firmware."
4871                       "Please reboot the system and ensure that the correct"
4872                       " firmware version is running\n", ioc->name);
4873
4874         r = _base_make_ioc_operational(ioc, sleep_flag);
4875         if (!r)
4876                 _base_reset_handler(ioc, MPT2_IOC_DONE_RESET);
4877  out:
4878         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: %s\n",
4879             ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
4880
4881         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4882         ioc->ioc_reset_in_progress_status = r;
4883         ioc->shost_recovery = 0;
4884         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4885         mutex_unlock(&ioc->reset_in_progress_mutex);
4886
4887  out_unlocked:
4888         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4889             __func__));
4890         return r;
4891 }