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