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) 2007-2010  LSI Corporation
   7  *  (mailto:DL-MPTFusionLinux@lsi.com)
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * NO WARRANTY
  20  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  21  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  22  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  23  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  24  * solely responsible for determining the appropriateness of using and
  25  * distributing the Program and assumes all risks associated with its
  26  * exercise of rights under this Agreement, including but not limited to
  27  * the risks and costs of program errors, damage to or loss of data,
  28  * programs or equipment, and unavailability or interruption of operations.
  29
  30  * DISCLAIMER OF LIABILITY
  31  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  32  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  34  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  35  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  36  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  37  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  38
  39  * You should have received a copy of the GNU General Public License
  40  * along with this program; if not, write to the Free Software
  41  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  42  * USA.
  43  */
  44
  45 #include <linux/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 missing_delay[2] = {-1, -1};
  84 module_param_array(missing_delay, int, NULL, 0);
  85 MODULE_PARM_DESC(missing_delay, " device missing delay , io missing delay");
  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 /**
  96  * _scsih_set_fwfault_debug - global setting of ioc->fwfault_debug.
  97  *
  98  */
  99 static int
 100 _scsih_set_fwfault_debug(const char *val, struct kernel_param *kp)
 101 {
 102         int ret = param_set_int(val, kp);
 103         struct MPT2SAS_ADAPTER *ioc;
 104
 105         if (ret)
 106                 return ret;
 107
 108         printk(KERN_INFO "setting fwfault_debug(%d)\n", mpt2sas_fwfault_debug);
 109         list_for_each_entry(ioc, &mpt2sas_ioc_list, list)
 110                 ioc->fwfault_debug = mpt2sas_fwfault_debug;
 111         return 0;
 112 }
 113
 114 module_param_call(mpt2sas_fwfault_debug, _scsih_set_fwfault_debug,
 115     param_get_int, &mpt2sas_fwfault_debug, 0644);
 116
 117 /**
 118  *  mpt2sas_remove_dead_ioc_func - kthread context to remove dead ioc
 119  * @arg: input argument, used to derive ioc
 120  *
 121  * Return 0 if controller is removed from pci subsystem.
 122  * Return -1 for other case.
 123  */
 124 static int mpt2sas_remove_dead_ioc_func(void *arg)
 125 {
 126                 struct MPT2SAS_ADAPTER *ioc = (struct MPT2SAS_ADAPTER *)arg;
 127                 struct pci_dev *pdev;
 128
 129                 if ((ioc == NULL))
 130                         return -1;
 131
 132                 pdev = ioc->pdev;
 133                 if ((pdev == NULL))
 134                         return -1;
 135                 pci_remove_bus_device(pdev);
 136                 return 0;
 137 }
 138
 139
 140 /**
 141  * _base_fault_reset_work - workq handling ioc fault conditions
 142  * @work: input argument, used to derive ioc
 143  * Context: sleep.
 144  *
 145  * Return nothing.
 146  */
 147 static void
 148 _base_fault_reset_work(struct work_struct *work)
 149 {
 150         struct MPT2SAS_ADAPTER *ioc =
 151             container_of(work, struct MPT2SAS_ADAPTER, fault_reset_work.work);
 152         unsigned long    flags;
 153         u32 doorbell;
 154         int rc;
 155         struct task_struct *p;
 156
 157         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 158         if (ioc->shost_recovery)
 159                 goto rearm_timer;
 160         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 161
 162         doorbell = mpt2sas_base_get_iocstate(ioc, 0);
 163         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_MASK) {
 164                 printk(MPT2SAS_INFO_FMT "%s : SAS host is non-operational !!!!\n",
 165                         ioc->name, __func__);
 166
 167                 /*
 168                  * Call _scsih_flush_pending_cmds callback so that we flush all
 169                  * pending commands back to OS. This call is required to aovid
 170                  * deadlock at block layer. Dead IOC will fail to do diag reset,
 171                  * and this call is safe since dead ioc will never return any
 172                  * command back from HW.
 173                  */
 174                 ioc->schedule_dead_ioc_flush_running_cmds(ioc);
 175                 /*
 176                  * Set remove_host flag early since kernel thread will
 177                  * take some time to execute.
 178                  */
 179                 ioc->remove_host = 1;
 180                 /*Remove the Dead Host */
 181                 p = kthread_run(mpt2sas_remove_dead_ioc_func, ioc,
 182                     "mpt2sas_dead_ioc_%d", ioc->id);
 183                 if (IS_ERR(p)) {
 184                         printk(MPT2SAS_ERR_FMT
 185                         "%s: Running mpt2sas_dead_ioc thread failed !!!!\n",
 186                         ioc->name, __func__);
 187                 } else {
 188                     printk(MPT2SAS_ERR_FMT
 189                         "%s: Running mpt2sas_dead_ioc thread success !!!!\n",
 190                         ioc->name, __func__);
 191                 }
 192
 193                 return; /* don't rearm timer */
 194         }
 195
 196         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
 197                 rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
 198                     FORCE_BIG_HAMMER);
 199                 printk(MPT2SAS_WARN_FMT "%s: hard reset: %s\n", ioc->name,
 200                     __func__, (rc == 0) ? "success" : "failed");
 201                 doorbell = mpt2sas_base_get_iocstate(ioc, 0);
 202                 if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
 203                         mpt2sas_base_fault_info(ioc, doorbell &
 204                             MPI2_DOORBELL_DATA_MASK);
 205         }
 206
 207         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 208  rearm_timer:
 209         if (ioc->fault_reset_work_q)
 210                 queue_delayed_work(ioc->fault_reset_work_q,
 211                     &ioc->fault_reset_work,
 212                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
 213         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 214 }
 215
 216 /**
 217  * mpt2sas_base_start_watchdog - start the fault_reset_work_q
 218  * @ioc: per adapter object
 219  * Context: sleep.
 220  *
 221  * Return nothing.
 222  */
 223 void
 224 mpt2sas_base_start_watchdog(struct MPT2SAS_ADAPTER *ioc)
 225 {
 226         unsigned long    flags;
 227
 228         if (ioc->fault_reset_work_q)
 229                 return;
 230
 231         /* initialize fault polling */
 232         INIT_DELAYED_WORK(&ioc->fault_reset_work, _base_fault_reset_work);
 233         snprintf(ioc->fault_reset_work_q_name,
 234             sizeof(ioc->fault_reset_work_q_name), "poll_%d_status", ioc->id);
 235         ioc->fault_reset_work_q =
 236                 create_singlethread_workqueue(ioc->fault_reset_work_q_name);
 237         if (!ioc->fault_reset_work_q) {
 238                 printk(MPT2SAS_ERR_FMT "%s: failed (line=%d)\n",
 239                     ioc->name, __func__, __LINE__);
 240                         return;
 241         }
 242         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 243         if (ioc->fault_reset_work_q)
 244                 queue_delayed_work(ioc->fault_reset_work_q,
 245                     &ioc->fault_reset_work,
 246                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
 247         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 248 }
 249
 250 /**
 251  * mpt2sas_base_stop_watchdog - stop the fault_reset_work_q
 252  * @ioc: per adapter object
 253  * Context: sleep.
 254  *
 255  * Return nothing.
 256  */
 257 void
 258 mpt2sas_base_stop_watchdog(struct MPT2SAS_ADAPTER *ioc)
 259 {
 260         unsigned long    flags;
 261         struct workqueue_struct *wq;
 262
 263         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 264         wq = ioc->fault_reset_work_q;
 265         ioc->fault_reset_work_q = NULL;
 266         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 267         if (wq) {
 268                 if (!cancel_delayed_work(&ioc->fault_reset_work))
 269                         flush_workqueue(wq);
 270                 destroy_workqueue(wq);
 271         }
 272 }
 273
 274 /**
 275  * mpt2sas_base_fault_info - verbose translation of firmware FAULT code
 276  * @ioc: per adapter object
 277  * @fault_code: fault code
 278  *
 279  * Return nothing.
 280  */
 281 void
 282 mpt2sas_base_fault_info(struct MPT2SAS_ADAPTER *ioc , u16 fault_code)
 283 {
 284         printk(MPT2SAS_ERR_FMT "fault_state(0x%04x)!\n",
 285             ioc->name, fault_code);
 286 }
 287
 288 /**
 289  * mpt2sas_halt_firmware - halt's mpt controller firmware
 290  * @ioc: per adapter object
 291  *
 292  * For debugging timeout related issues.  Writing 0xCOFFEE00
 293  * to the doorbell register will halt controller firmware. With
 294  * the purpose to stop both driver and firmware, the enduser can
 295  * obtain a ring buffer from controller UART.
 296  */
 297 void
 298 mpt2sas_halt_firmware(struct MPT2SAS_ADAPTER *ioc)
 299 {
 300         u32 doorbell;
 301
 302         if (!ioc->fwfault_debug)
 303                 return;
 304
 305         dump_stack();
 306
 307         doorbell = readl(&ioc->chip->Doorbell);
 308         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
 309                 mpt2sas_base_fault_info(ioc , doorbell);
 310         else {
 311                 writel(0xC0FFEE00, &ioc->chip->Doorbell);
 312                 printk(MPT2SAS_ERR_FMT "Firmware is halted due to command "
 313                     "timeout\n", ioc->name);
 314         }
 315
 316         panic("panic in %s\n", __func__);
 317 }
 318
 319 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 320 /**
 321  * _base_sas_ioc_info - verbose translation of the ioc status
 322  * @ioc: per adapter object
 323  * @mpi_reply: reply mf payload returned from firmware
 324  * @request_hdr: request mf
 325  *
 326  * Return nothing.
 327  */
 328 static void
 329 _base_sas_ioc_info(struct MPT2SAS_ADAPTER *ioc, MPI2DefaultReply_t *mpi_reply,
 330      MPI2RequestHeader_t *request_hdr)
 331 {
 332         u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
 333             MPI2_IOCSTATUS_MASK;
 334         char *desc = NULL;
 335         u16 frame_sz;
 336         char *func_str = NULL;
 337
 338         /* SCSI_IO, RAID_PASS are handled from _scsih_scsi_ioc_info */
 339         if (request_hdr->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 340             request_hdr->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
 341             request_hdr->Function == MPI2_FUNCTION_EVENT_NOTIFICATION)
 342                 return;
 343
 344         if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
 345                 return;
 346
 347         switch (ioc_status) {
 348
 349 /****************************************************************************
 350 *  Common IOCStatus values for all replies
 351 ****************************************************************************/
 352
 353         case MPI2_IOCSTATUS_INVALID_FUNCTION:
 354                 desc = "invalid function";
 355                 break;
 356         case MPI2_IOCSTATUS_BUSY:
 357                 desc = "busy";
 358                 break;
 359         case MPI2_IOCSTATUS_INVALID_SGL:
 360                 desc = "invalid sgl";
 361                 break;
 362         case MPI2_IOCSTATUS_INTERNAL_ERROR:
 363                 desc = "internal error";
 364                 break;
 365         case MPI2_IOCSTATUS_INVALID_VPID:
 366                 desc = "invalid vpid";
 367                 break;
 368         case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
 369                 desc = "insufficient resources";
 370                 break;
 371         case MPI2_IOCSTATUS_INVALID_FIELD:
 372                 desc = "invalid field";
 373                 break;
 374         case MPI2_IOCSTATUS_INVALID_STATE:
 375                 desc = "invalid state";
 376                 break;
 377         case MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED:
 378                 desc = "op state not supported";
 379                 break;
 380
 381 /****************************************************************************
 382 *  Config IOCStatus values
 383 ****************************************************************************/
 384
 385         case MPI2_IOCSTATUS_CONFIG_INVALID_ACTION:
 386                 desc = "config invalid action";
 387                 break;
 388         case MPI2_IOCSTATUS_CONFIG_INVALID_TYPE:
 389                 desc = "config invalid type";
 390                 break;
 391         case MPI2_IOCSTATUS_CONFIG_INVALID_PAGE:
 392                 desc = "config invalid page";
 393                 break;
 394         case MPI2_IOCSTATUS_CONFIG_INVALID_DATA:
 395                 desc = "config invalid data";
 396                 break;
 397         case MPI2_IOCSTATUS_CONFIG_NO_DEFAULTS:
 398                 desc = "config no defaults";
 399                 break;
 400         case MPI2_IOCSTATUS_CONFIG_CANT_COMMIT:
 401                 desc = "config cant commit";
 402                 break;
 403
 404 /****************************************************************************
 405 *  SCSI IO Reply
 406 ****************************************************************************/
 407
 408         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
 409         case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
 410         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
 411         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
 412         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
 413         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
 414         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
 415         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
 416         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
 417         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
 418         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
 419         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
 420                 break;
 421
 422 /****************************************************************************
 423 *  For use by SCSI Initiator and SCSI Target end-to-end data protection
 424 ****************************************************************************/
 425
 426         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
 427                 desc = "eedp guard error";
 428                 break;
 429         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
 430                 desc = "eedp ref tag error";
 431                 break;
 432         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
 433                 desc = "eedp app tag error";
 434                 break;
 435
 436 /****************************************************************************
 437 *  SCSI Target values
 438 ****************************************************************************/
 439
 440         case MPI2_IOCSTATUS_TARGET_INVALID_IO_INDEX:
 441                 desc = "target invalid io index";
 442                 break;
 443         case MPI2_IOCSTATUS_TARGET_ABORTED:
 444                 desc = "target aborted";
 445                 break;
 446         case MPI2_IOCSTATUS_TARGET_NO_CONN_RETRYABLE:
 447                 desc = "target no conn retryable";
 448                 break;
 449         case MPI2_IOCSTATUS_TARGET_NO_CONNECTION:
 450                 desc = "target no connection";
 451                 break;
 452         case MPI2_IOCSTATUS_TARGET_XFER_COUNT_MISMATCH:
 453                 desc = "target xfer count mismatch";
 454                 break;
 455         case MPI2_IOCSTATUS_TARGET_DATA_OFFSET_ERROR:
 456                 desc = "target data offset error";
 457                 break;
 458         case MPI2_IOCSTATUS_TARGET_TOO_MUCH_WRITE_DATA:
 459                 desc = "target too much write data";
 460                 break;
 461         case MPI2_IOCSTATUS_TARGET_IU_TOO_SHORT:
 462                 desc = "target iu too short";
 463                 break;
 464         case MPI2_IOCSTATUS_TARGET_ACK_NAK_TIMEOUT:
 465                 desc = "target ack nak timeout";
 466                 break;
 467         case MPI2_IOCSTATUS_TARGET_NAK_RECEIVED:
 468                 desc = "target nak received";
 469                 break;
 470
 471 /****************************************************************************
 472 *  Serial Attached SCSI values
 473 ****************************************************************************/
 474
 475         case MPI2_IOCSTATUS_SAS_SMP_REQUEST_FAILED:
 476                 desc = "smp request failed";
 477                 break;
 478         case MPI2_IOCSTATUS_SAS_SMP_DATA_OVERRUN:
 479                 desc = "smp data overrun";
 480                 break;
 481
 482 /****************************************************************************
 483 *  Diagnostic Buffer Post / Diagnostic Release values
 484 ****************************************************************************/
 485
 486         case MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED:
 487                 desc = "diagnostic released";
 488                 break;
 489         default:
 490                 break;
 491         }
 492
 493         if (!desc)
 494                 return;
 495
 496         switch (request_hdr->Function) {
 497         case MPI2_FUNCTION_CONFIG:
 498                 frame_sz = sizeof(Mpi2ConfigRequest_t) + ioc->sge_size;
 499                 func_str = "config_page";
 500                 break;
 501         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 502                 frame_sz = sizeof(Mpi2SCSITaskManagementRequest_t);
 503                 func_str = "task_mgmt";
 504                 break;
 505         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 506                 frame_sz = sizeof(Mpi2SasIoUnitControlRequest_t);
 507                 func_str = "sas_iounit_ctl";
 508                 break;
 509         case MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR:
 510                 frame_sz = sizeof(Mpi2SepRequest_t);
 511                 func_str = "enclosure";
 512                 break;
 513         case MPI2_FUNCTION_IOC_INIT:
 514                 frame_sz = sizeof(Mpi2IOCInitRequest_t);
 515                 func_str = "ioc_init";
 516                 break;
 517         case MPI2_FUNCTION_PORT_ENABLE:
 518                 frame_sz = sizeof(Mpi2PortEnableRequest_t);
 519                 func_str = "port_enable";
 520                 break;
 521         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 522                 frame_sz = sizeof(Mpi2SmpPassthroughRequest_t) + ioc->sge_size;
 523                 func_str = "smp_passthru";
 524                 break;
 525         default:
 526                 frame_sz = 32;
 527                 func_str = "unknown";
 528                 break;
 529         }
 530
 531         printk(MPT2SAS_WARN_FMT "ioc_status: %s(0x%04x), request(0x%p),"
 532             " (%s)\n", ioc->name, desc, ioc_status, request_hdr, func_str);
 533
 534         _debug_dump_mf(request_hdr, frame_sz/4);
 535 }
 536
 537 /**
 538  * _base_display_event_data - verbose translation of firmware asyn events
 539  * @ioc: per adapter object
 540  * @mpi_reply: reply mf payload returned from firmware
 541  *
 542  * Return nothing.
 543  */
 544 static void
 545 _base_display_event_data(struct MPT2SAS_ADAPTER *ioc,
 546     Mpi2EventNotificationReply_t *mpi_reply)
 547 {
 548         char *desc = NULL;
 549         u16 event;
 550
 551         if (!(ioc->logging_level & MPT_DEBUG_EVENTS))
 552                 return;
 553
 554         event = le16_to_cpu(mpi_reply->Event);
 555
 556         switch (event) {
 557         case MPI2_EVENT_LOG_DATA:
 558                 desc = "Log Data";
 559                 break;
 560         case MPI2_EVENT_STATE_CHANGE:
 561                 desc = "Status Change";
 562                 break;
 563         case MPI2_EVENT_HARD_RESET_RECEIVED:
 564                 desc = "Hard Reset Received";
 565                 break;
 566         case MPI2_EVENT_EVENT_CHANGE:
 567                 desc = "Event Change";
 568                 break;
 569         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
 570                 desc = "Device Status Change";
 571                 break;
 572         case MPI2_EVENT_IR_OPERATION_STATUS:
 573                 if (!ioc->hide_ir_msg)
 574                         desc = "IR Operation Status";
 575                 break;
 576         case MPI2_EVENT_SAS_DISCOVERY:
 577         {
 578                 Mpi2EventDataSasDiscovery_t *event_data =
 579                     (Mpi2EventDataSasDiscovery_t *)mpi_reply->EventData;
 580                 printk(MPT2SAS_INFO_FMT "Discovery: (%s)", ioc->name,
 581                     (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
 582                     "start" : "stop");
 583                 if (event_data->DiscoveryStatus)
 584                         printk("discovery_status(0x%08x)",
 585                             le32_to_cpu(event_data->DiscoveryStatus));
 586                 printk("\n");
 587                 return;
 588         }
 589         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
 590                 desc = "SAS Broadcast Primitive";
 591                 break;
 592         case MPI2_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE:
 593                 desc = "SAS Init Device Status Change";
 594                 break;
 595         case MPI2_EVENT_SAS_INIT_TABLE_OVERFLOW:
 596                 desc = "SAS Init Table Overflow";
 597                 break;
 598         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
 599                 desc = "SAS Topology Change List";
 600                 break;
 601         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
 602                 desc = "SAS Enclosure Device Status Change";
 603                 break;
 604         case MPI2_EVENT_IR_VOLUME:
 605                 if (!ioc->hide_ir_msg)
 606                         desc = "IR Volume";
 607                 break;
 608         case MPI2_EVENT_IR_PHYSICAL_DISK:
 609                 if (!ioc->hide_ir_msg)
 610                         desc = "IR Physical Disk";
 611                 break;
 612         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
 613                 if (!ioc->hide_ir_msg)
 614                         desc = "IR Configuration Change List";
 615                 break;
 616         case MPI2_EVENT_LOG_ENTRY_ADDED:
 617                 if (!ioc->hide_ir_msg)
 618                         desc = "Log Entry Added";
 619                 break;
 620         }
 621
 622         if (!desc)
 623                 return;
 624
 625         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, desc);
 626 }
 627 #endif
 628
 629 /**
 630  * _base_sas_log_info - verbose translation of firmware log info
 631  * @ioc: per adapter object
 632  * @log_info: log info
 633  *
 634  * Return nothing.
 635  */
 636 static void
 637 _base_sas_log_info(struct MPT2SAS_ADAPTER *ioc , u32 log_info)
 638 {
 639         union loginfo_type {
 640                 u32     loginfo;
 641                 struct {
 642                         u32     subcode:16;
 643                         u32     code:8;
 644                         u32     originator:4;
 645                         u32     bus_type:4;
 646                 } dw;
 647         };
 648         union loginfo_type sas_loginfo;
 649         char *originator_str = NULL;
 650
 651         sas_loginfo.loginfo = log_info;
 652         if (sas_loginfo.dw.bus_type != 3 /*SAS*/)
 653                 return;
 654
 655         /* each nexus loss loginfo */
 656         if (log_info == 0x31170000)
 657                 return;
 658
 659         /* eat the loginfos associated with task aborts */
 660         if (ioc->ignore_loginfos && (log_info == 30050000 || log_info ==
 661             0x31140000 || log_info == 0x31130000))
 662                 return;
 663
 664         switch (sas_loginfo.dw.originator) {
 665         case 0:
 666                 originator_str = "IOP";
 667                 break;
 668         case 1:
 669                 originator_str = "PL";
 670                 break;
 671         case 2:
 672                 if (!ioc->hide_ir_msg)
 673                         originator_str = "IR";
 674                 else
 675                         originator_str = "WarpDrive";
 676                 break;
 677         }
 678
 679         printk(MPT2SAS_WARN_FMT "log_info(0x%08x): originator(%s), "
 680             "code(0x%02x), sub_code(0x%04x)\n", ioc->name, log_info,
 681              originator_str, sas_loginfo.dw.code,
 682              sas_loginfo.dw.subcode);
 683 }
 684
 685 /**
 686  * _base_display_reply_info -
 687  * @ioc: per adapter object
 688  * @smid: system request message index
 689  * @msix_index: MSIX table index supplied by the OS
 690  * @reply: reply message frame(lower 32bit addr)
 691  *
 692  * Return nothing.
 693  */
 694 static void
 695 _base_display_reply_info(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 696     u32 reply)
 697 {
 698         MPI2DefaultReply_t *mpi_reply;
 699         u16 ioc_status;
 700
 701         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 702         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
 703 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 704         if ((ioc_status & MPI2_IOCSTATUS_MASK) &&
 705             (ioc->logging_level & MPT_DEBUG_REPLY)) {
 706                 _base_sas_ioc_info(ioc , mpi_reply,
 707                    mpt2sas_base_get_msg_frame(ioc, smid));
 708         }
 709 #endif
 710         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
 711                 _base_sas_log_info(ioc, le32_to_cpu(mpi_reply->IOCLogInfo));
 712 }
 713
 714 /**
 715  * mpt2sas_base_done - base internal command completion routine
 716  * @ioc: per adapter object
 717  * @smid: system request message index
 718  * @msix_index: MSIX table index supplied by the OS
 719  * @reply: reply message frame(lower 32bit addr)
 720  *
 721  * Return 1 meaning mf should be freed from _base_interrupt
 722  *        0 means the mf is freed from this function.
 723  */
 724 u8
 725 mpt2sas_base_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 726     u32 reply)
 727 {
 728         MPI2DefaultReply_t *mpi_reply;
 729
 730         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 731         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
 732                 return 1;
 733
 734         if (ioc->base_cmds.status == MPT2_CMD_NOT_USED)
 735                 return 1;
 736
 737         ioc->base_cmds.status |= MPT2_CMD_COMPLETE;
 738         if (mpi_reply) {
 739                 ioc->base_cmds.status |= MPT2_CMD_REPLY_VALID;
 740                 memcpy(ioc->base_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 741         }
 742         ioc->base_cmds.status &= ~MPT2_CMD_PENDING;
 743
 744         complete(&ioc->base_cmds.done);
 745         return 1;
 746 }
 747
 748 /**
 749  * _base_async_event - main callback handler for firmware asyn events
 750  * @ioc: per adapter object
 751  * @msix_index: MSIX table index supplied by the OS
 752  * @reply: reply message frame(lower 32bit addr)
 753  *
 754  * Return 1 meaning mf should be freed from _base_interrupt
 755  *        0 means the mf is freed from this function.
 756  */
 757 static u8
 758 _base_async_event(struct MPT2SAS_ADAPTER *ioc, u8 msix_index, u32 reply)
 759 {
 760         Mpi2EventNotificationReply_t *mpi_reply;
 761         Mpi2EventAckRequest_t *ack_request;
 762         u16 smid;
 763
 764         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 765         if (!mpi_reply)
 766                 return 1;
 767         if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION)
 768                 return 1;
 769 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 770         _base_display_event_data(ioc, mpi_reply);
 771 #endif
 772         if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED))
 773                 goto out;
 774         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
 775         if (!smid) {
 776                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
 777                     ioc->name, __func__);
 778                 goto out;
 779         }
 780
 781         ack_request = mpt2sas_base_get_msg_frame(ioc, smid);
 782         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
 783         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
 784         ack_request->Event = mpi_reply->Event;
 785         ack_request->EventContext = mpi_reply->EventContext;
 786         ack_request->VF_ID = 0;  /* TODO */
 787         ack_request->VP_ID = 0;
 788         mpt2sas_base_put_smid_default(ioc, smid);
 789
 790  out:
 791
 792         /* scsih callback handler */
 793         mpt2sas_scsih_event_callback(ioc, msix_index, reply);
 794
 795         /* ctl callback handler */
 796         mpt2sas_ctl_event_callback(ioc, msix_index, reply);
 797
 798         return 1;
 799 }
 800
 801 /**
 802  * _base_get_cb_idx - obtain the callback index
 803  * @ioc: per adapter object
 804  * @smid: system request message index
 805  *
 806  * Return callback index.
 807  */
 808 static u8
 809 _base_get_cb_idx(struct MPT2SAS_ADAPTER *ioc, u16 smid)
 810 {
 811         int i;
 812         u8 cb_idx;
 813
 814         if (smid < ioc->hi_priority_smid) {
 815                 i = smid - 1;
 816                 cb_idx = ioc->scsi_lookup[i].cb_idx;
 817         } else if (smid < ioc->internal_smid) {
 818                 i = smid - ioc->hi_priority_smid;
 819                 cb_idx = ioc->hpr_lookup[i].cb_idx;
 820         } else if (smid <= ioc->hba_queue_depth) {
 821                 i = smid - ioc->internal_smid;
 822                 cb_idx = ioc->internal_lookup[i].cb_idx;
 823         } else
 824                 cb_idx = 0xFF;
 825         return cb_idx;
 826 }
 827
 828 /**
 829  * _base_mask_interrupts - disable interrupts
 830  * @ioc: per adapter object
 831  *
 832  * Disabling ResetIRQ, Reply and Doorbell Interrupts
 833  *
 834  * Return nothing.
 835  */
 836 static void
 837 _base_mask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 838 {
 839         u32 him_register;
 840
 841         ioc->mask_interrupts = 1;
 842         him_register = readl(&ioc->chip->HostInterruptMask);
 843         him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK;
 844         writel(him_register, &ioc->chip->HostInterruptMask);
 845         readl(&ioc->chip->HostInterruptMask);
 846 }
 847
 848 /**
 849  * _base_unmask_interrupts - enable interrupts
 850  * @ioc: per adapter object
 851  *
 852  * Enabling only Reply Interrupts
 853  *
 854  * Return nothing.
 855  */
 856 static void
 857 _base_unmask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 858 {
 859         u32 him_register;
 860
 861         him_register = readl(&ioc->chip->HostInterruptMask);
 862         him_register &= ~MPI2_HIM_RIM;
 863         writel(him_register, &ioc->chip->HostInterruptMask);
 864         ioc->mask_interrupts = 0;
 865 }
 866
 867 union reply_descriptor {
 868         u64 word;
 869         struct {
 870                 u32 low;
 871                 u32 high;
 872         } u;
 873 };
 874
 875 /**
 876  * _base_interrupt - MPT adapter (IOC) specific interrupt handler.
 877  * @irq: irq number (not used)
 878  * @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure
 879  * @r: pt_regs pointer (not used)
 880  *
 881  * Return IRQ_HANDLE if processed, else IRQ_NONE.
 882  */
 883 static irqreturn_t
 884 _base_interrupt(int irq, void *bus_id)
 885 {
 886         struct adapter_reply_queue *reply_q = bus_id;
 887         union reply_descriptor rd;
 888         u32 completed_cmds;
 889         u8 request_desript_type;
 890         u16 smid;
 891         u8 cb_idx;
 892         u32 reply;
 893         u8 msix_index = reply_q->msix_index;
 894         struct MPT2SAS_ADAPTER *ioc = reply_q->ioc;
 895         Mpi2ReplyDescriptorsUnion_t *rpf;
 896         u8 rc;
 897
 898         if (ioc->mask_interrupts)
 899                 return IRQ_NONE;
 900
 901         if (!atomic_add_unless(&reply_q->busy, 1, 1))
 902                 return IRQ_NONE;
 903
 904         rpf = &reply_q->reply_post_free[reply_q->reply_post_host_index];
 905         request_desript_type = rpf->Default.ReplyFlags
 906              & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 907         if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) {
 908                 atomic_dec(&reply_q->busy);
 909                 return IRQ_NONE;
 910         }
 911
 912         completed_cmds = 0;
 913         cb_idx = 0xFF;
 914         do {
 915                 rd.word = le64_to_cpu(rpf->Words);
 916                 if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX)
 917                         goto out;
 918                 reply = 0;
 919                 smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1);
 920                 if (request_desript_type ==
 921                     MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
 922                         reply = le32_to_cpu
 923                                 (rpf->AddressReply.ReplyFrameAddress);
 924                         if (reply > ioc->reply_dma_max_address ||
 925                             reply < ioc->reply_dma_min_address)
 926                                 reply = 0;
 927                 } else if (request_desript_type ==
 928                     MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER)
 929                         goto next;
 930                 else if (request_desript_type ==
 931                     MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS)
 932                         goto next;
 933                 if (smid)
 934                         cb_idx = _base_get_cb_idx(ioc, smid);
 935                 if (smid && cb_idx != 0xFF) {
 936                         rc = mpt_callbacks[cb_idx](ioc, smid, msix_index,
 937                             reply);
 938                         if (reply)
 939                                 _base_display_reply_info(ioc, smid, msix_index,
 940                                     reply);
 941                         if (rc)
 942                                 mpt2sas_base_free_smid(ioc, smid);
 943                 }
 944                 if (!smid)
 945                         _base_async_event(ioc, msix_index, reply);
 946
 947                 /* reply free queue handling */
 948                 if (reply) {
 949                         ioc->reply_free_host_index =
 950                             (ioc->reply_free_host_index ==
 951                             (ioc->reply_free_queue_depth - 1)) ?
 952                             0 : ioc->reply_free_host_index + 1;
 953                         ioc->reply_free[ioc->reply_free_host_index] =
 954                             cpu_to_le32(reply);
 955                         wmb();
 956                         writel(ioc->reply_free_host_index,
 957                             &ioc->chip->ReplyFreeHostIndex);
 958                 }
 959
 960  next:
 961
 962                 rpf->Words = cpu_to_le64(ULLONG_MAX);
 963                 reply_q->reply_post_host_index =
 964                     (reply_q->reply_post_host_index ==
 965                     (ioc->reply_post_queue_depth - 1)) ? 0 :
 966                     reply_q->reply_post_host_index + 1;
 967                 request_desript_type =
 968                     reply_q->reply_post_free[reply_q->reply_post_host_index].
 969                     Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 970                 completed_cmds++;
 971                 if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
 972                         goto out;
 973                 if (!reply_q->reply_post_host_index)
 974                         rpf = reply_q->reply_post_free;
 975                 else
 976                         rpf++;
 977         } while (1);
 978
 979  out:
 980
 981         if (!completed_cmds) {
 982                 atomic_dec(&reply_q->busy);
 983                 return IRQ_NONE;
 984         }
 985         wmb();
 986         if (ioc->is_warpdrive) {
 987                 writel(reply_q->reply_post_host_index,
 988                 ioc->reply_post_host_index[msix_index]);
 989                 atomic_dec(&reply_q->busy);
 990                 return IRQ_HANDLED;
 991         }
 992         writel(reply_q->reply_post_host_index | (msix_index <<
 993             MPI2_RPHI_MSIX_INDEX_SHIFT), &ioc->chip->ReplyPostHostIndex);
 994         atomic_dec(&reply_q->busy);
 995         return IRQ_HANDLED;
 996 }
 997
 998 /**
 999  * _base_is_controller_msix_enabled - is controller support muli-reply queues
1000  * @ioc: per adapter object
1001  *
1002  */
1003 static inline int
1004 _base_is_controller_msix_enabled(struct MPT2SAS_ADAPTER *ioc)
1005 {
1006         return (ioc->facts.IOCCapabilities &
1007             MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable;
1008 }
1009
1010 /**
1011  * mpt2sas_base_flush_reply_queues - flushing the MSIX reply queues
1012  * @ioc: per adapter object
1013  * Context: ISR conext
1014  *
1015  * Called when a Task Management request has completed. We want
1016  * to flush the other reply queues so all the outstanding IO has been
1017  * completed back to OS before we process the TM completetion.
1018  *
1019  * Return nothing.
1020  */
1021 void
1022 mpt2sas_base_flush_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1023 {
1024         struct adapter_reply_queue *reply_q;
1025
1026         /* If MSIX capability is turned off
1027          * then multi-queues are not enabled
1028          */
1029         if (!_base_is_controller_msix_enabled(ioc))
1030                 return;
1031
1032         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
1033                 if (ioc->shost_recovery)
1034                         return;
1035                 /* TMs are on msix_index == 0 */
1036                 if (reply_q->msix_index == 0)
1037                         continue;
1038                 _base_interrupt(reply_q->vector, (void *)reply_q);
1039         }
1040 }
1041
1042 /**
1043  * mpt2sas_base_release_callback_handler - clear interrupt callback handler
1044  * @cb_idx: callback index
1045  *
1046  * Return nothing.
1047  */
1048 void
1049 mpt2sas_base_release_callback_handler(u8 cb_idx)
1050 {
1051         mpt_callbacks[cb_idx] = NULL;
1052 }
1053
1054 /**
1055  * mpt2sas_base_register_callback_handler - obtain index for the interrupt callback handler
1056  * @cb_func: callback function
1057  *
1058  * Returns cb_func.
1059  */
1060 u8
1061 mpt2sas_base_register_callback_handler(MPT_CALLBACK cb_func)
1062 {
1063         u8 cb_idx;
1064
1065         for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--)
1066                 if (mpt_callbacks[cb_idx] == NULL)
1067                         break;
1068
1069         mpt_callbacks[cb_idx] = cb_func;
1070         return cb_idx;
1071 }
1072
1073 /**
1074  * mpt2sas_base_initialize_callback_handler - initialize the interrupt callback handler
1075  *
1076  * Return nothing.
1077  */
1078 void
1079 mpt2sas_base_initialize_callback_handler(void)
1080 {
1081         u8 cb_idx;
1082
1083         for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++)
1084                 mpt2sas_base_release_callback_handler(cb_idx);
1085 }
1086
1087 /**
1088  * mpt2sas_base_build_zero_len_sge - build zero length sg entry
1089  * @ioc: per adapter object
1090  * @paddr: virtual address for SGE
1091  *
1092  * Create a zero length scatter gather entry to insure the IOCs hardware has
1093  * something to use if the target device goes brain dead and tries
1094  * to send data even when none is asked for.
1095  *
1096  * Return nothing.
1097  */
1098 void
1099 mpt2sas_base_build_zero_len_sge(struct MPT2SAS_ADAPTER *ioc, void *paddr)
1100 {
1101         u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT |
1102             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST |
1103             MPI2_SGE_FLAGS_SIMPLE_ELEMENT) <<
1104             MPI2_SGE_FLAGS_SHIFT);
1105         ioc->base_add_sg_single(paddr, flags_length, -1);
1106 }
1107
1108 /**
1109  * _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr.
1110  * @paddr: virtual address for SGE
1111  * @flags_length: SGE flags and data transfer length
1112  * @dma_addr: Physical address
1113  *
1114  * Return nothing.
1115  */
1116 static void
1117 _base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1118 {
1119         Mpi2SGESimple32_t *sgel = paddr;
1120
1121         flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING |
1122             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1123         sgel->FlagsLength = cpu_to_le32(flags_length);
1124         sgel->Address = cpu_to_le32(dma_addr);
1125 }
1126
1127
1128 /**
1129  * _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr.
1130  * @paddr: virtual address for SGE
1131  * @flags_length: SGE flags and data transfer length
1132  * @dma_addr: Physical address
1133  *
1134  * Return nothing.
1135  */
1136 static void
1137 _base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1138 {
1139         Mpi2SGESimple64_t *sgel = paddr;
1140
1141         flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
1142             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1143         sgel->FlagsLength = cpu_to_le32(flags_length);
1144         sgel->Address = cpu_to_le64(dma_addr);
1145 }
1146
1147 #define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10))
1148
1149 /**
1150  * _base_config_dma_addressing - set dma addressing
1151  * @ioc: per adapter object
1152  * @pdev: PCI device struct
1153  *
1154  * Returns 0 for success, non-zero for failure.
1155  */
1156 static int
1157 _base_config_dma_addressing(struct MPT2SAS_ADAPTER *ioc, struct pci_dev *pdev)
1158 {
1159         struct sysinfo s;
1160         char *desc = NULL;
1161
1162         if (sizeof(dma_addr_t) > 4) {
1163                 const uint64_t required_mask =
1164                     dma_get_required_mask(&pdev->dev);
1165                 if ((required_mask > DMA_BIT_MASK(32)) && !pci_set_dma_mask(pdev,
1166                     DMA_BIT_MASK(64)) && !pci_set_consistent_dma_mask(pdev,
1167                     DMA_BIT_MASK(64))) {
1168                         ioc->base_add_sg_single = &_base_add_sg_single_64;
1169                         ioc->sge_size = sizeof(Mpi2SGESimple64_t);
1170                         desc = "64";
1171                         goto out;
1172                 }
1173         }
1174
1175         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
1176             && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1177                 ioc->base_add_sg_single = &_base_add_sg_single_32;
1178                 ioc->sge_size = sizeof(Mpi2SGESimple32_t);
1179                 desc = "32";
1180         } else
1181                 return -ENODEV;
1182
1183  out:
1184         si_meminfo(&s);
1185         printk(MPT2SAS_INFO_FMT "%s BIT PCI BUS DMA ADDRESSING SUPPORTED, "
1186             "total mem (%ld kB)\n", ioc->name, desc, convert_to_kb(s.totalram));
1187
1188         return 0;
1189 }
1190
1191 /**
1192  * _base_check_enable_msix - checks MSIX capabable.
1193  * @ioc: per adapter object
1194  *
1195  * Check to see if card is capable of MSIX, and set number
1196  * of available msix vectors
1197  */
1198 static int
1199 _base_check_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1200 {
1201         int base;
1202         u16 message_control;
1203
1204
1205         base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
1206         if (!base) {
1207                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "msix not "
1208                     "supported\n", ioc->name));
1209                 return -EINVAL;
1210         }
1211
1212         /* get msix vector count */
1213         /* NUMA_IO not supported for older controllers */
1214         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2004 ||
1215             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 ||
1216             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_1 ||
1217             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_2 ||
1218             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_3 ||
1219             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_1 ||
1220             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_2)
1221                 ioc->msix_vector_count = 1;
1222         else {
1223                 pci_read_config_word(ioc->pdev, base + 2, &message_control);
1224                 ioc->msix_vector_count = (message_control & 0x3FF) + 1;
1225         }
1226         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "msix is supported, "
1227             "vector_count(%d)\n", ioc->name, ioc->msix_vector_count));
1228
1229         return 0;
1230 }
1231
1232 /**
1233  * _base_free_irq - free irq
1234  * @ioc: per adapter object
1235  *
1236  * Freeing respective reply_queue from the list.
1237  */
1238 static void
1239 _base_free_irq(struct MPT2SAS_ADAPTER *ioc)
1240 {
1241         struct adapter_reply_queue *reply_q, *next;
1242
1243         if (list_empty(&ioc->reply_queue_list))
1244                 return;
1245
1246         list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) {
1247                 list_del(&reply_q->list);
1248                 synchronize_irq(reply_q->vector);
1249                 free_irq(reply_q->vector, reply_q);
1250                 kfree(reply_q);
1251         }
1252 }
1253
1254 /**
1255  * _base_request_irq - request irq
1256  * @ioc: per adapter object
1257  * @index: msix index into vector table
1258  * @vector: irq vector
1259  *
1260  * Inserting respective reply_queue into the list.
1261  */
1262 static int
1263 _base_request_irq(struct MPT2SAS_ADAPTER *ioc, u8 index, u32 vector)
1264 {
1265         struct adapter_reply_queue *reply_q;
1266         int r;
1267
1268         reply_q =  kzalloc(sizeof(struct adapter_reply_queue), GFP_KERNEL);
1269         if (!reply_q) {
1270                 printk(MPT2SAS_ERR_FMT "unable to allocate memory %d!\n",
1271                     ioc->name, (int)sizeof(struct adapter_reply_queue));
1272                 return -ENOMEM;
1273         }
1274         reply_q->ioc = ioc;
1275         reply_q->msix_index = index;
1276         reply_q->vector = vector;
1277         atomic_set(&reply_q->busy, 0);
1278         if (ioc->msix_enable)
1279                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d-msix%d",
1280                     MPT2SAS_DRIVER_NAME, ioc->id, index);
1281         else
1282                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d",
1283                     MPT2SAS_DRIVER_NAME, ioc->id);
1284         r = request_irq(vector, _base_interrupt, IRQF_SHARED, reply_q->name,
1285             reply_q);
1286         if (r) {
1287                 printk(MPT2SAS_ERR_FMT "unable to allocate interrupt %d!\n",
1288                     reply_q->name, vector);
1289                 kfree(reply_q);
1290                 return -EBUSY;
1291         }
1292
1293         INIT_LIST_HEAD(&reply_q->list);
1294         list_add_tail(&reply_q->list, &ioc->reply_queue_list);
1295         return 0;
1296 }
1297
1298 /**
1299  * _base_assign_reply_queues - assigning msix index for each cpu
1300  * @ioc: per adapter object
1301  *
1302  * The enduser would need to set the affinity via /proc/irq/#/smp_affinity
1303  *
1304  * It would nice if we could call irq_set_affinity, however it is not
1305  * an exported symbol
1306  */
1307 static void
1308 _base_assign_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1309 {
1310         struct adapter_reply_queue *reply_q;
1311         int cpu_id;
1312         int cpu_grouping, loop, grouping, grouping_mod;
1313
1314         if (!_base_is_controller_msix_enabled(ioc))
1315                 return;
1316
1317         memset(ioc->cpu_msix_table, 0, ioc->cpu_msix_table_sz);
1318         /* when there are more cpus than available msix vectors,
1319          * then group cpus togeather on same irq
1320          */
1321         if (ioc->cpu_count > ioc->msix_vector_count) {
1322                 grouping = ioc->cpu_count / ioc->msix_vector_count;
1323                 grouping_mod = ioc->cpu_count % ioc->msix_vector_count;
1324                 if (grouping < 2 || (grouping == 2 && !grouping_mod))
1325                         cpu_grouping = 2;
1326                 else if (grouping < 4 || (grouping == 4 && !grouping_mod))
1327                         cpu_grouping = 4;
1328                 else if (grouping < 8 || (grouping == 8 && !grouping_mod))
1329                         cpu_grouping = 8;
1330                 else
1331                         cpu_grouping = 16;
1332         } else
1333                 cpu_grouping = 0;
1334
1335         loop = 0;
1336         reply_q = list_entry(ioc->reply_queue_list.next,
1337              struct adapter_reply_queue, list);
1338         for_each_online_cpu(cpu_id) {
1339                 if (!cpu_grouping) {
1340                         ioc->cpu_msix_table[cpu_id] = reply_q->msix_index;
1341                         reply_q = list_entry(reply_q->list.next,
1342                             struct adapter_reply_queue, list);
1343                 } else {
1344                         if (loop < cpu_grouping) {
1345                                 ioc->cpu_msix_table[cpu_id] =
1346                                         reply_q->msix_index;
1347                                 loop++;
1348                         } else {
1349                                 reply_q = list_entry(reply_q->list.next,
1350                                     struct adapter_reply_queue, list);
1351                                 ioc->cpu_msix_table[cpu_id] =
1352                                         reply_q->msix_index;
1353                                 loop = 1;
1354                         }
1355                 }
1356         }
1357 }
1358
1359 /**
1360  * _base_disable_msix - disables msix
1361  * @ioc: per adapter object
1362  *
1363  */
1364 static void
1365 _base_disable_msix(struct MPT2SAS_ADAPTER *ioc)
1366 {
1367         if (ioc->msix_enable) {
1368                 pci_disable_msix(ioc->pdev);
1369                 ioc->msix_enable = 0;
1370         }
1371 }
1372
1373 /**
1374  * _base_enable_msix - enables msix, failback to io_apic
1375  * @ioc: per adapter object
1376  *
1377  */
1378 static int
1379 _base_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1380 {
1381         struct msix_entry *entries, *a;
1382         int r;
1383         int i;
1384         u8 try_msix = 0;
1385
1386         INIT_LIST_HEAD(&ioc->reply_queue_list);
1387
1388         if (msix_disable == -1 || msix_disable == 0)
1389                 try_msix = 1;
1390
1391         if (!try_msix)
1392                 goto try_ioapic;
1393
1394         if (_base_check_enable_msix(ioc) != 0)
1395                 goto try_ioapic;
1396
1397         ioc->reply_queue_count = min_t(int, ioc->cpu_count,
1398             ioc->msix_vector_count);
1399
1400         entries = kcalloc(ioc->reply_queue_count, sizeof(struct msix_entry),
1401             GFP_KERNEL);
1402         if (!entries) {
1403                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "kcalloc "
1404                     "failed @ at %s:%d/%s() !!!\n", ioc->name, __FILE__,
1405                     __LINE__, __func__));
1406                 goto try_ioapic;
1407         }
1408
1409         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++)
1410                 a->entry = i;
1411
1412         r = pci_enable_msix(ioc->pdev, entries, ioc->reply_queue_count);
1413         if (r) {
1414                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "pci_enable_msix "
1415                     "failed (r=%d) !!!\n", ioc->name, r));
1416                 kfree(entries);
1417                 goto try_ioapic;
1418         }
1419
1420         ioc->msix_enable = 1;
1421         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++) {
1422                 r = _base_request_irq(ioc, i, a->vector);
1423                 if (r) {
1424                         _base_free_irq(ioc);
1425                         _base_disable_msix(ioc);
1426                         kfree(entries);
1427                         goto try_ioapic;
1428                 }
1429         }
1430
1431         kfree(entries);
1432         return 0;
1433
1434 /* failback to io_apic interrupt routing */
1435  try_ioapic:
1436
1437         r = _base_request_irq(ioc, 0, ioc->pdev->irq);
1438
1439         return r;
1440 }
1441
1442 /**
1443  * mpt2sas_base_map_resources - map in controller resources (io/irq/memap)
1444  * @ioc: per adapter object
1445  *
1446  * Returns 0 for success, non-zero for failure.
1447  */
1448 int
1449 mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
1450 {
1451         struct pci_dev *pdev = ioc->pdev;
1452         u32 memap_sz;
1453         u32 pio_sz;
1454         int i, r = 0;
1455         u64 pio_chip = 0;
1456         u64 chip_phys = 0;
1457         struct adapter_reply_queue *reply_q;
1458
1459         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n",
1460             ioc->name, __func__));
1461
1462         ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM);
1463         if (pci_enable_device_mem(pdev)) {
1464                 printk(MPT2SAS_WARN_FMT "pci_enable_device_mem: "
1465                     "failed\n", ioc->name);
1466                 return -ENODEV;
1467         }
1468
1469
1470         if (pci_request_selected_regions(pdev, ioc->bars,
1471             MPT2SAS_DRIVER_NAME)) {
1472                 printk(MPT2SAS_WARN_FMT "pci_request_selected_regions: "
1473                     "failed\n", ioc->name);
1474                 r = -ENODEV;
1475                 goto out_fail;
1476         }
1477
1478         /* AER (Advanced Error Reporting) hooks */
1479         pci_enable_pcie_error_reporting(pdev);
1480
1481         pci_set_master(pdev);
1482
1483         if (_base_config_dma_addressing(ioc, pdev) != 0) {
1484                 printk(MPT2SAS_WARN_FMT "no suitable DMA mask for %s\n",
1485                     ioc->name, pci_name(pdev));
1486                 r = -ENODEV;
1487                 goto out_fail;
1488         }
1489
1490         for (i = 0, memap_sz = 0, pio_sz = 0 ; i < DEVICE_COUNT_RESOURCE; i++) {
1491                 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
1492                         if (pio_sz)
1493                                 continue;
1494                         pio_chip = (u64)pci_resource_start(pdev, i);
1495                         pio_sz = pci_resource_len(pdev, i);
1496                 } else {
1497                         if (memap_sz)
1498                                 continue;
1499                         /* verify memory resource is valid before using */
1500                         if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
1501                                 ioc->chip_phys = pci_resource_start(pdev, i);
1502                                 chip_phys = (u64)ioc->chip_phys;
1503                                 memap_sz = pci_resource_len(pdev, i);
1504                                 ioc->chip = ioremap(ioc->chip_phys, memap_sz);
1505                                 if (ioc->chip == NULL) {
1506                                         printk(MPT2SAS_ERR_FMT "unable to map "
1507                                             "adapter memory!\n", ioc->name);
1508                                         r = -EINVAL;
1509                                         goto out_fail;
1510                                 }
1511                         }
1512                 }
1513         }
1514
1515         _base_mask_interrupts(ioc);
1516         r = _base_enable_msix(ioc);
1517         if (r)
1518                 goto out_fail;
1519
1520         list_for_each_entry(reply_q, &ioc->reply_queue_list, list)
1521                 printk(MPT2SAS_INFO_FMT "%s: IRQ %d\n",
1522                     reply_q->name,  ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
1523                     "IO-APIC enabled"), reply_q->vector);
1524
1525         printk(MPT2SAS_INFO_FMT "iomem(0x%016llx), mapped(0x%p), size(%d)\n",
1526             ioc->name, (unsigned long long)chip_phys, ioc->chip, memap_sz);
1527         printk(MPT2SAS_INFO_FMT "ioport(0x%016llx), size(%d)\n",
1528             ioc->name, (unsigned long long)pio_chip, pio_sz);
1529
1530         /* Save PCI configuration state for recovery from PCI AER/EEH errors */
1531         pci_save_state(pdev);
1532
1533         return 0;
1534
1535  out_fail:
1536         if (ioc->chip_phys)
1537                 iounmap(ioc->chip);
1538         ioc->chip_phys = 0;
1539         pci_release_selected_regions(ioc->pdev, ioc->bars);
1540         pci_disable_pcie_error_reporting(pdev);
1541         pci_disable_device(pdev);
1542         return r;
1543 }
1544
1545 /**
1546  * mpt2sas_base_get_msg_frame - obtain request mf pointer
1547  * @ioc: per adapter object
1548  * @smid: system request message index(smid zero is invalid)
1549  *
1550  * Returns virt pointer to message frame.
1551  */
1552 void *
1553 mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1554 {
1555         return (void *)(ioc->request + (smid * ioc->request_sz));
1556 }
1557
1558 /**
1559  * mpt2sas_base_get_sense_buffer - obtain a sense buffer assigned to a mf request
1560  * @ioc: per adapter object
1561  * @smid: system request message index
1562  *
1563  * Returns virt pointer to sense buffer.
1564  */
1565 void *
1566 mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1567 {
1568         return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1569 }
1570
1571 /**
1572  * mpt2sas_base_get_sense_buffer_dma - obtain a sense buffer assigned to a mf request
1573  * @ioc: per adapter object
1574  * @smid: system request message index
1575  *
1576  * Returns phys pointer to the low 32bit address of the sense buffer.
1577  */
1578 __le32
1579 mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1580 {
1581         return cpu_to_le32(ioc->sense_dma +
1582                         ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1583 }
1584
1585 /**
1586  * mpt2sas_base_get_reply_virt_addr - obtain reply frames virt address
1587  * @ioc: per adapter object
1588  * @phys_addr: lower 32 physical addr of the reply
1589  *
1590  * Converts 32bit lower physical addr into a virt address.
1591  */
1592 void *
1593 mpt2sas_base_get_reply_virt_addr(struct MPT2SAS_ADAPTER *ioc, u32 phys_addr)
1594 {
1595         if (!phys_addr)
1596                 return NULL;
1597         return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
1598 }
1599
1600 /**
1601  * mpt2sas_base_get_smid - obtain a free smid from internal queue
1602  * @ioc: per adapter object
1603  * @cb_idx: callback index
1604  *
1605  * Returns smid (zero is invalid)
1606  */
1607 u16
1608 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1609 {
1610         unsigned long flags;
1611         struct request_tracker *request;
1612         u16 smid;
1613
1614         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1615         if (list_empty(&ioc->internal_free_list)) {
1616                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1617                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1618                     ioc->name, __func__);
1619                 return 0;
1620         }
1621
1622         request = list_entry(ioc->internal_free_list.next,
1623             struct request_tracker, tracker_list);
1624         request->cb_idx = cb_idx;
1625         smid = request->smid;
1626         list_del(&request->tracker_list);
1627         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1628         return smid;
1629 }
1630
1631 /**
1632  * mpt2sas_base_get_smid_scsiio - obtain a free smid from scsiio queue
1633  * @ioc: per adapter object
1634  * @cb_idx: callback index
1635  * @scmd: pointer to scsi command object
1636  *
1637  * Returns smid (zero is invalid)
1638  */
1639 u16
1640 mpt2sas_base_get_smid_scsiio(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx,
1641     struct scsi_cmnd *scmd)
1642 {
1643         unsigned long flags;
1644         struct scsiio_tracker *request;
1645         u16 smid;
1646
1647         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1648         if (list_empty(&ioc->free_list)) {
1649                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1650                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1651                     ioc->name, __func__);
1652                 return 0;
1653         }
1654
1655         request = list_entry(ioc->free_list.next,
1656             struct scsiio_tracker, tracker_list);
1657         request->scmd = scmd;
1658         request->cb_idx = cb_idx;
1659         smid = request->smid;
1660         list_del(&request->tracker_list);
1661         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1662         return smid;
1663 }
1664
1665 /**
1666  * mpt2sas_base_get_smid_hpr - obtain a free smid from hi-priority queue
1667  * @ioc: per adapter object
1668  * @cb_idx: callback index
1669  *
1670  * Returns smid (zero is invalid)
1671  */
1672 u16
1673 mpt2sas_base_get_smid_hpr(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1674 {
1675         unsigned long flags;
1676         struct request_tracker *request;
1677         u16 smid;
1678
1679         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1680         if (list_empty(&ioc->hpr_free_list)) {
1681                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1682                 return 0;
1683         }
1684
1685         request = list_entry(ioc->hpr_free_list.next,
1686             struct request_tracker, tracker_list);
1687         request->cb_idx = cb_idx;
1688         smid = request->smid;
1689         list_del(&request->tracker_list);
1690         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1691         return smid;
1692 }
1693
1694
1695 /**
1696  * mpt2sas_base_free_smid - put smid back on free_list
1697  * @ioc: per adapter object
1698  * @smid: system request message index
1699  *
1700  * Return nothing.
1701  */
1702 void
1703 mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1704 {
1705         unsigned long flags;
1706         int i;
1707         struct chain_tracker *chain_req, *next;
1708
1709         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1710         if (smid < ioc->hi_priority_smid) {
1711                 /* scsiio queue */
1712                 i = smid - 1;
1713                 if (!list_empty(&ioc->scsi_lookup[i].chain_list)) {
1714                         list_for_each_entry_safe(chain_req, next,
1715                             &ioc->scsi_lookup[i].chain_list, tracker_list) {
1716                                 list_del_init(&chain_req->tracker_list);
1717                                 list_add_tail(&chain_req->tracker_list,
1718                                     &ioc->free_chain_list);
1719                         }
1720                 }
1721                 ioc->scsi_lookup[i].cb_idx = 0xFF;
1722                 ioc->scsi_lookup[i].scmd = NULL;
1723                 ioc->scsi_lookup[i].direct_io = 0;
1724                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
1725                     &ioc->free_list);
1726                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1727
1728                 /*
1729                  * See _wait_for_commands_to_complete() call with regards
1730                  * to this code.
1731                  */
1732                 if (ioc->shost_recovery && ioc->pending_io_count) {
1733                         if (ioc->pending_io_count == 1)
1734                                 wake_up(&ioc->reset_wq);
1735                         ioc->pending_io_count--;
1736                 }
1737                 return;
1738         } else if (smid < ioc->internal_smid) {
1739                 /* hi-priority */
1740                 i = smid - ioc->hi_priority_smid;
1741                 ioc->hpr_lookup[i].cb_idx = 0xFF;
1742                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
1743                     &ioc->hpr_free_list);
1744         } else if (smid <= ioc->hba_queue_depth) {
1745                 /* internal queue */
1746                 i = smid - ioc->internal_smid;
1747                 ioc->internal_lookup[i].cb_idx = 0xFF;
1748                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
1749                     &ioc->internal_free_list);
1750         }
1751         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1752 }
1753
1754 /**
1755  * _base_writeq - 64 bit write to MMIO
1756  * @ioc: per adapter object
1757  * @b: data payload
1758  * @addr: address in MMIO space
1759  * @writeq_lock: spin lock
1760  *
1761  * Glue for handling an atomic 64 bit word to MMIO. This special handling takes
1762  * care of 32 bit environment where its not quarenteed to send the entire word
1763  * in one transfer.
1764  */
1765 #ifndef writeq
1766 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1767     spinlock_t *writeq_lock)
1768 {
1769         unsigned long flags;
1770         __u64 data_out = cpu_to_le64(b);
1771
1772         spin_lock_irqsave(writeq_lock, flags);
1773         writel((u32)(data_out), addr);
1774         writel((u32)(data_out >> 32), (addr + 4));
1775         spin_unlock_irqrestore(writeq_lock, flags);
1776 }
1777 #else
1778 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1779     spinlock_t *writeq_lock)
1780 {
1781         writeq(cpu_to_le64(b), addr);
1782 }
1783 #endif
1784
1785 static inline u8
1786 _base_get_msix_index(struct MPT2SAS_ADAPTER *ioc)
1787 {
1788         return ioc->cpu_msix_table[smp_processor_id()];
1789 }
1790
1791 /**
1792  * mpt2sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
1793  * @ioc: per adapter object
1794  * @smid: system request message index
1795  * @handle: device handle
1796  *
1797  * Return nothing.
1798  */
1799 void
1800 mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid, u16 handle)
1801 {
1802         Mpi2RequestDescriptorUnion_t descriptor;
1803         u64 *request = (u64 *)&descriptor;
1804
1805
1806         descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
1807         descriptor.SCSIIO.MSIxIndex =  _base_get_msix_index(ioc);
1808         descriptor.SCSIIO.SMID = cpu_to_le16(smid);
1809         descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
1810         descriptor.SCSIIO.LMID = 0;
1811         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1812             &ioc->scsi_lookup_lock);
1813 }
1814
1815
1816 /**
1817  * mpt2sas_base_put_smid_hi_priority - send Task Management request to firmware
1818  * @ioc: per adapter object
1819  * @smid: system request message index
1820  *
1821  * Return nothing.
1822  */
1823 void
1824 mpt2sas_base_put_smid_hi_priority(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1825 {
1826         Mpi2RequestDescriptorUnion_t descriptor;
1827         u64 *request = (u64 *)&descriptor;
1828
1829         descriptor.HighPriority.RequestFlags =
1830             MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
1831         descriptor.HighPriority.MSIxIndex =  0;
1832         descriptor.HighPriority.SMID = cpu_to_le16(smid);
1833         descriptor.HighPriority.LMID = 0;
1834         descriptor.HighPriority.Reserved1 = 0;
1835         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1836             &ioc->scsi_lookup_lock);
1837 }
1838
1839 /**
1840  * mpt2sas_base_put_smid_default - Default, primarily used for config pages
1841  * @ioc: per adapter object
1842  * @smid: system request message index
1843  *
1844  * Return nothing.
1845  */
1846 void
1847 mpt2sas_base_put_smid_default(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1848 {
1849         Mpi2RequestDescriptorUnion_t descriptor;
1850         u64 *request = (u64 *)&descriptor;
1851
1852         descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1853         descriptor.Default.MSIxIndex =  _base_get_msix_index(ioc);
1854         descriptor.Default.SMID = cpu_to_le16(smid);
1855         descriptor.Default.LMID = 0;
1856         descriptor.Default.DescriptorTypeDependent = 0;
1857         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1858             &ioc->scsi_lookup_lock);
1859 }
1860
1861 /**
1862  * mpt2sas_base_put_smid_target_assist - send Target Assist/Status to firmware
1863  * @ioc: per adapter object
1864  * @smid: system request message index
1865  * @io_index: value used to track the IO
1866  *
1867  * Return nothing.
1868  */
1869 void
1870 mpt2sas_base_put_smid_target_assist(struct MPT2SAS_ADAPTER *ioc, u16 smid,
1871     u16 io_index)
1872 {
1873         Mpi2RequestDescriptorUnion_t descriptor;
1874         u64 *request = (u64 *)&descriptor;
1875
1876         descriptor.SCSITarget.RequestFlags =
1877             MPI2_REQ_DESCRIPT_FLAGS_SCSI_TARGET;
1878         descriptor.SCSITarget.MSIxIndex =  _base_get_msix_index(ioc);
1879         descriptor.SCSITarget.SMID = cpu_to_le16(smid);
1880         descriptor.SCSITarget.LMID = 0;
1881         descriptor.SCSITarget.IoIndex = cpu_to_le16(io_index);
1882         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1883             &ioc->scsi_lookup_lock);
1884 }
1885
1886 /**
1887  * _base_display_dell_branding - Disply branding string
1888  * @ioc: per adapter object
1889  *
1890  * Return nothing.
1891  */
1892 static void
1893 _base_display_dell_branding(struct MPT2SAS_ADAPTER *ioc)
1894 {
1895         char dell_branding[MPT2SAS_DELL_BRANDING_SIZE];
1896
1897         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_DELL)
1898                 return;
1899
1900         memset(dell_branding, 0, MPT2SAS_DELL_BRANDING_SIZE);
1901         switch (ioc->pdev->subsystem_device) {
1902         case MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID:
1903                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING,
1904                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1905                 break;
1906         case MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID:
1907                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING,
1908                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1909                 break;
1910         case MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID:
1911                 strncpy(dell_branding,
1912                     MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING,
1913                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1914                 break;
1915         case MPT2SAS_DELL_PERC_H200_MODULAR_SSDID:
1916                 strncpy(dell_branding,
1917                     MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING,
1918                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1919                 break;
1920         case MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID:
1921                 strncpy(dell_branding,
1922                     MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING,
1923                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1924                 break;
1925         case MPT2SAS_DELL_PERC_H200_SSDID:
1926                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_BRANDING,
1927                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1928                 break;
1929         case MPT2SAS_DELL_6GBPS_SAS_SSDID:
1930                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_BRANDING,
1931                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1932                 break;
1933         default:
1934                 sprintf(dell_branding, "0x%4X", ioc->pdev->subsystem_device);
1935                 break;
1936         }
1937
1938         printk(MPT2SAS_INFO_FMT "%s: Vendor(0x%04X), Device(0x%04X),"
1939             " SSVID(0x%04X), SSDID(0x%04X)\n", ioc->name, dell_branding,
1940             ioc->pdev->vendor, ioc->pdev->device, ioc->pdev->subsystem_vendor,
1941             ioc->pdev->subsystem_device);
1942 }
1943
1944 /**
1945  * _base_display_intel_branding - Display branding string
1946  * @ioc: per adapter object
1947  *
1948  * Return nothing.
1949  */
1950 static void
1951 _base_display_intel_branding(struct MPT2SAS_ADAPTER *ioc)
1952 {
1953         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1954                 return;
1955
1956         switch (ioc->pdev->device) {
1957         case MPI2_MFGPAGE_DEVID_SAS2008:
1958                 switch (ioc->pdev->subsystem_device) {
1959                 case MPT2SAS_INTEL_RMS2LL080_SSDID:
1960                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1961                             MPT2SAS_INTEL_RMS2LL080_BRANDING);
1962                         break;
1963                 case MPT2SAS_INTEL_RMS2LL040_SSDID:
1964                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1965                             MPT2SAS_INTEL_RMS2LL040_BRANDING);
1966                         break;
1967                 case MPT2SAS_INTEL_RAMSDALE_SSDID:
1968                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1969                             MPT2SAS_INTEL_RAMSDALE_BRANDING);
1970                         break;
1971                 default:
1972                         break;
1973                 }
1974         case MPI2_MFGPAGE_DEVID_SAS2308_2:
1975                 switch (ioc->pdev->subsystem_device) {
1976                 case MPT2SAS_INTEL_RS25GB008_SSDID:
1977                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1978                             MPT2SAS_INTEL_RS25GB008_BRANDING);
1979                         break;
1980                 case MPT2SAS_INTEL_RMS25JB080_SSDID:
1981                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1982                             MPT2SAS_INTEL_RMS25JB080_BRANDING);
1983                         break;
1984                 case MPT2SAS_INTEL_RMS25JB040_SSDID:
1985                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1986                             MPT2SAS_INTEL_RMS25JB040_BRANDING);
1987                         break;
1988                 case MPT2SAS_INTEL_RMS25KB080_SSDID:
1989                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1990                             MPT2SAS_INTEL_RMS25KB080_BRANDING);
1991                         break;
1992                 case MPT2SAS_INTEL_RMS25KB040_SSDID:
1993                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1994                             MPT2SAS_INTEL_RMS25KB040_BRANDING);
1995                         break;
1996                 default:
1997                         break;
1998                 }
1999         default:
2000                 break;
2001         }
2002 }
2003
2004 /**
2005  * _base_display_hp_branding - Display branding string
2006  * @ioc: per adapter object
2007  *
2008  * Return nothing.
2009  */
2010 static void
2011 _base_display_hp_branding(struct MPT2SAS_ADAPTER *ioc)
2012 {
2013         if (ioc->pdev->subsystem_vendor != MPT2SAS_HP_3PAR_SSVID)
2014                 return;
2015
2016         switch (ioc->pdev->device) {
2017         case MPI2_MFGPAGE_DEVID_SAS2004:
2018                 switch (ioc->pdev->subsystem_device) {
2019                 case MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_SSDID:
2020                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2021                             MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_BRANDING);
2022                         break;
2023                 default:
2024                         break;
2025                 }
2026         case MPI2_MFGPAGE_DEVID_SAS2308_2:
2027                 switch (ioc->pdev->subsystem_device) {
2028                 case MPT2SAS_HP_2_4_INTERNAL_SSDID:
2029                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2030                             MPT2SAS_HP_2_4_INTERNAL_BRANDING);
2031                         break;
2032                 case MPT2SAS_HP_2_4_EXTERNAL_SSDID:
2033                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2034                             MPT2SAS_HP_2_4_EXTERNAL_BRANDING);
2035                         break;
2036                 case MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_SSDID:
2037                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2038                             MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_BRANDING);
2039                         break;
2040                 case MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_SSDID:
2041                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2042                             MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_BRANDING);
2043                         break;
2044                 default:
2045                         break;
2046                 }
2047         default:
2048                 break;
2049         }
2050 }
2051
2052 /**
2053  * _base_display_ioc_capabilities - Disply IOC's capabilities.
2054  * @ioc: per adapter object
2055  *
2056  * Return nothing.
2057  */
2058 static void
2059 _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc)
2060 {
2061         int i = 0;
2062         char desc[16];
2063         u8 revision;
2064         u32 iounit_pg1_flags;
2065         u32 bios_version;
2066
2067         bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2068         pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
2069         strncpy(desc, ioc->manu_pg0.ChipName, 16);
2070         printk(MPT2SAS_INFO_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "
2071            "ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
2072             ioc->name, desc,
2073            (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2074            (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2075            (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2076            ioc->facts.FWVersion.Word & 0x000000FF,
2077            revision,
2078            (bios_version & 0xFF000000) >> 24,
2079            (bios_version & 0x00FF0000) >> 16,
2080            (bios_version & 0x0000FF00) >> 8,
2081             bios_version & 0x000000FF);
2082
2083         _base_display_dell_branding(ioc);
2084         _base_display_intel_branding(ioc);
2085         _base_display_hp_branding(ioc);
2086
2087         printk(MPT2SAS_INFO_FMT "Protocol=(", ioc->name);
2088
2089         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
2090                 printk("Initiator");
2091                 i++;
2092         }
2093
2094         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
2095                 printk("%sTarget", i ? "," : "");
2096                 i++;
2097         }
2098
2099         i = 0;
2100         printk("), ");
2101         printk("Capabilities=(");
2102
2103         if (!ioc->hide_ir_msg) {
2104                 if (ioc->facts.IOCCapabilities &
2105                     MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
2106                         printk("Raid");
2107                         i++;
2108                 }
2109         }
2110
2111         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
2112                 printk("%sTLR", i ? "," : "");
2113                 i++;
2114         }
2115
2116         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
2117                 printk("%sMulticast", i ? "," : "");
2118                 i++;
2119         }
2120
2121         if (ioc->facts.IOCCapabilities &
2122             MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
2123                 printk("%sBIDI Target", i ? "," : "");
2124                 i++;
2125         }
2126
2127         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
2128                 printk("%sEEDP", i ? "," : "");
2129                 i++;
2130         }
2131
2132         if (ioc->facts.IOCCapabilities &
2133             MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
2134                 printk("%sSnapshot Buffer", i ? "," : "");
2135                 i++;
2136         }
2137
2138         if (ioc->facts.IOCCapabilities &
2139             MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
2140                 printk("%sDiag Trace Buffer", i ? "," : "");
2141                 i++;
2142         }
2143
2144         if (ioc->facts.IOCCapabilities &
2145             MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) {
2146                 printk(KERN_INFO "%sDiag Extended Buffer", i ? "," : "");
2147                 i++;
2148         }
2149
2150         if (ioc->facts.IOCCapabilities &
2151             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
2152                 printk("%sTask Set Full", i ? "," : "");
2153                 i++;
2154         }
2155
2156         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2157         if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
2158                 printk("%sNCQ", i ? "," : "");
2159                 i++;
2160         }
2161
2162         printk(")\n");
2163 }
2164
2165 /**
2166  * _base_update_missing_delay - change the missing delay timers
2167  * @ioc: per adapter object
2168  * @device_missing_delay: amount of time till device is reported missing
2169  * @io_missing_delay: interval IO is returned when there is a missing device
2170  *
2171  * Return nothing.
2172  *
2173  * Passed on the command line, this function will modify the device missing
2174  * delay, as well as the io missing delay. This should be called at driver
2175  * load time.
2176  */
2177 static void
2178 _base_update_missing_delay(struct MPT2SAS_ADAPTER *ioc,
2179         u16 device_missing_delay, u8 io_missing_delay)
2180 {
2181         u16 dmd, dmd_new, dmd_orignal;
2182         u8 io_missing_delay_original;
2183         u16 sz;
2184         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
2185         Mpi2ConfigReply_t mpi_reply;
2186         u8 num_phys = 0;
2187         u16 ioc_status;
2188
2189         mpt2sas_config_get_number_hba_phys(ioc, &num_phys);
2190         if (!num_phys)
2191                 return;
2192
2193         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (num_phys *
2194             sizeof(Mpi2SasIOUnit1PhyData_t));
2195         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
2196         if (!sas_iounit_pg1) {
2197                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2198                     ioc->name, __FILE__, __LINE__, __func__);
2199                 goto out;
2200         }
2201         if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
2202             sas_iounit_pg1, sz))) {
2203                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2204                     ioc->name, __FILE__, __LINE__, __func__);
2205                 goto out;
2206         }
2207         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
2208             MPI2_IOCSTATUS_MASK;
2209         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2210                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2211                     ioc->name, __FILE__, __LINE__, __func__);
2212                 goto out;
2213         }
2214
2215         /* device missing delay */
2216         dmd = sas_iounit_pg1->ReportDeviceMissingDelay;
2217         if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2218                 dmd = (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2219         else
2220                 dmd = dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2221         dmd_orignal = dmd;
2222         if (device_missing_delay > 0x7F) {
2223                 dmd = (device_missing_delay > 0x7F0) ? 0x7F0 :
2224                     device_missing_delay;
2225                 dmd = dmd / 16;
2226                 dmd |= MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16;
2227         } else
2228                 dmd = device_missing_delay;
2229         sas_iounit_pg1->ReportDeviceMissingDelay = dmd;
2230
2231         /* io missing delay */
2232         io_missing_delay_original = sas_iounit_pg1->IODeviceMissingDelay;
2233         sas_iounit_pg1->IODeviceMissingDelay = io_missing_delay;
2234
2235         if (!mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
2236             sz)) {
2237                 if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2238                         dmd_new = (dmd &
2239                             MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2240                 else
2241                         dmd_new =
2242                     dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2243                 printk(MPT2SAS_INFO_FMT "device_missing_delay: old(%d), "
2244                     "new(%d)\n", ioc->name, dmd_orignal, dmd_new);
2245                 printk(MPT2SAS_INFO_FMT "ioc_missing_delay: old(%d), "
2246                     "new(%d)\n", ioc->name, io_missing_delay_original,
2247                     io_missing_delay);
2248                 ioc->device_missing_delay = dmd_new;
2249                 ioc->io_missing_delay = io_missing_delay;
2250         }
2251
2252 out:
2253         kfree(sas_iounit_pg1);
2254 }
2255
2256 /**
2257  * _base_static_config_pages - static start of day config pages
2258  * @ioc: per adapter object
2259  *
2260  * Return nothing.
2261  */
2262 static void
2263 _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc)
2264 {
2265         Mpi2ConfigReply_t mpi_reply;
2266         u32 iounit_pg1_flags;
2267
2268         mpt2sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
2269         if (ioc->ir_firmware)
2270                 mpt2sas_config_get_manufacturing_pg10(ioc, &mpi_reply,
2271                     &ioc->manu_pg10);
2272         mpt2sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
2273         mpt2sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
2274         mpt2sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
2275         mpt2sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
2276         mpt2sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2277         _base_display_ioc_capabilities(ioc);
2278
2279         /*
2280          * Enable task_set_full handling in iounit_pg1 when the
2281          * facts capabilities indicate that its supported.
2282          */
2283         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2284         if ((ioc->facts.IOCCapabilities &
2285             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
2286                 iounit_pg1_flags &=
2287                     ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2288         else
2289                 iounit_pg1_flags |=
2290                     MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2291         ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
2292         mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2293
2294 }
2295
2296 /**
2297  * _base_release_memory_pools - release memory
2298  * @ioc: per adapter object
2299  *
2300  * Free memory allocated from _base_allocate_memory_pools.
2301  *
2302  * Return nothing.
2303  */
2304 static void
2305 _base_release_memory_pools(struct MPT2SAS_ADAPTER *ioc)
2306 {
2307         int i;
2308
2309         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2310             __func__));
2311
2312         if (ioc->request) {
2313                 pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
2314                     ioc->request,  ioc->request_dma);
2315                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "request_pool(0x%p)"
2316                     ": free\n", ioc->name, ioc->request));
2317                 ioc->request = NULL;
2318         }
2319
2320         if (ioc->sense) {
2321                 pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
2322                 if (ioc->sense_dma_pool)
2323                         pci_pool_destroy(ioc->sense_dma_pool);
2324                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_pool(0x%p)"
2325                     ": free\n", ioc->name, ioc->sense));
2326                 ioc->sense = NULL;
2327         }
2328
2329         if (ioc->reply) {
2330                 pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
2331                 if (ioc->reply_dma_pool)
2332                         pci_pool_destroy(ioc->reply_dma_pool);
2333                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_pool(0x%p)"
2334                      ": free\n", ioc->name, ioc->reply));
2335                 ioc->reply = NULL;
2336         }
2337
2338         if (ioc->reply_free) {
2339                 pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
2340                     ioc->reply_free_dma);
2341                 if (ioc->reply_free_dma_pool)
2342                         pci_pool_destroy(ioc->reply_free_dma_pool);
2343                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_pool"
2344                     "(0x%p): free\n", ioc->name, ioc->reply_free));
2345                 ioc->reply_free = NULL;
2346         }
2347
2348         if (ioc->reply_post_free) {
2349                 pci_pool_free(ioc->reply_post_free_dma_pool,
2350                     ioc->reply_post_free, ioc->reply_post_free_dma);
2351                 if (ioc->reply_post_free_dma_pool)
2352                         pci_pool_destroy(ioc->reply_post_free_dma_pool);
2353                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2354                     "reply_post_free_pool(0x%p): free\n", ioc->name,
2355                     ioc->reply_post_free));
2356                 ioc->reply_post_free = NULL;
2357         }
2358
2359         if (ioc->config_page) {
2360                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2361                     "config_page(0x%p): free\n", ioc->name,
2362                     ioc->config_page));
2363                 pci_free_consistent(ioc->pdev, ioc->config_page_sz,
2364                     ioc->config_page, ioc->config_page_dma);
2365         }
2366
2367         if (ioc->scsi_lookup) {
2368                 free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
2369                 ioc->scsi_lookup = NULL;
2370         }
2371         kfree(ioc->hpr_lookup);
2372         kfree(ioc->internal_lookup);
2373         if (ioc->chain_lookup) {
2374                 for (i = 0; i < ioc->chain_depth; i++) {
2375                         if (ioc->chain_lookup[i].chain_buffer)
2376                                 pci_pool_free(ioc->chain_dma_pool,
2377                                     ioc->chain_lookup[i].chain_buffer,
2378                                     ioc->chain_lookup[i].chain_buffer_dma);
2379                 }
2380                 if (ioc->chain_dma_pool)
2381                         pci_pool_destroy(ioc->chain_dma_pool);
2382                 free_pages((ulong)ioc->chain_lookup, ioc->chain_pages);
2383                 ioc->chain_lookup = NULL;
2384         }
2385 }
2386
2387
2388 /**
2389  * _base_allocate_memory_pools - allocate start of day memory pools
2390  * @ioc: per adapter object
2391  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2392  *
2393  * Returns 0 success, anything else error
2394  */
2395 static int
2396 _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc,  int sleep_flag)
2397 {
2398         struct mpt2sas_facts *facts;
2399         u16 max_sge_elements;
2400         u16 chains_needed_per_io;
2401         u32 sz, total_sz, reply_post_free_sz;
2402         u32 retry_sz;
2403         u16 max_request_credit;
2404         int i;
2405
2406         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2407             __func__));
2408
2409         retry_sz = 0;
2410         facts = &ioc->facts;
2411
2412         /* command line tunables  for max sgl entries */
2413         if (max_sgl_entries != -1) {
2414                 ioc->shost->sg_tablesize = (max_sgl_entries <
2415                     MPT2SAS_SG_DEPTH) ? max_sgl_entries :
2416                     MPT2SAS_SG_DEPTH;
2417         } else {
2418                 ioc->shost->sg_tablesize = MPT2SAS_SG_DEPTH;
2419         }
2420
2421         /* command line tunables  for max controller queue depth */
2422         if (max_queue_depth != -1)
2423                 max_request_credit = (max_queue_depth < facts->RequestCredit)
2424                     ? max_queue_depth : facts->RequestCredit;
2425         else
2426                 max_request_credit = min_t(u16, facts->RequestCredit,
2427                     MAX_HBA_QUEUE_DEPTH);
2428
2429         ioc->hba_queue_depth = max_request_credit;
2430         ioc->hi_priority_depth = facts->HighPriorityCredit;
2431         ioc->internal_depth = ioc->hi_priority_depth + 5;
2432
2433         /* request frame size */
2434         ioc->request_sz = facts->IOCRequestFrameSize * 4;
2435
2436         /* reply frame size */
2437         ioc->reply_sz = facts->ReplyFrameSize * 4;
2438
2439  retry_allocation:
2440         total_sz = 0;
2441         /* calculate number of sg elements left over in the 1st frame */
2442         max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
2443             sizeof(Mpi2SGEIOUnion_t)) + ioc->sge_size);
2444         ioc->max_sges_in_main_message = max_sge_elements/ioc->sge_size;
2445
2446         /* now do the same for a chain buffer */
2447         max_sge_elements = ioc->request_sz - ioc->sge_size;
2448         ioc->max_sges_in_chain_message = max_sge_elements/ioc->sge_size;
2449
2450         ioc->chain_offset_value_for_main_message =
2451             ((sizeof(Mpi2SCSIIORequest_t) - sizeof(Mpi2SGEIOUnion_t)) +
2452              (ioc->max_sges_in_chain_message * ioc->sge_size)) / 4;
2453
2454         /*
2455          *  MPT2SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
2456          */
2457         chains_needed_per_io = ((ioc->shost->sg_tablesize -
2458            ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
2459             + 1;
2460         if (chains_needed_per_io > facts->MaxChainDepth) {
2461                 chains_needed_per_io = facts->MaxChainDepth;
2462                 ioc->shost->sg_tablesize = min_t(u16,
2463                 ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
2464                 * chains_needed_per_io), ioc->shost->sg_tablesize);
2465         }
2466         ioc->chains_needed_per_io = chains_needed_per_io;
2467
2468         /* reply free queue sizing - taking into account for 64 FW events */
2469         ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
2470
2471         /* align the reply post queue on the next 16 count boundary */
2472         if (!ioc->reply_free_queue_depth % 16)
2473                 ioc->reply_post_queue_depth = ioc->reply_free_queue_depth + 16;
2474         else
2475                 ioc->reply_post_queue_depth = ioc->reply_free_queue_depth +
2476                                 32 - (ioc->reply_free_queue_depth % 16);
2477         if (ioc->reply_post_queue_depth >
2478             facts->MaxReplyDescriptorPostQueueDepth) {
2479                 ioc->reply_post_queue_depth = min_t(u16,
2480                     (facts->MaxReplyDescriptorPostQueueDepth -
2481                     (facts->MaxReplyDescriptorPostQueueDepth % 16)),
2482                     (ioc->hba_queue_depth - (ioc->hba_queue_depth % 16)));
2483                 ioc->reply_free_queue_depth = ioc->reply_post_queue_depth - 16;
2484                 ioc->hba_queue_depth = ioc->reply_free_queue_depth - 64;
2485         }
2486
2487
2488         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "
2489             "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
2490             "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
2491             ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
2492             ioc->chains_needed_per_io));
2493
2494         ioc->scsiio_depth = ioc->hba_queue_depth -
2495             ioc->hi_priority_depth - ioc->internal_depth;
2496
2497         /* set the scsi host can_queue depth
2498          * with some internal commands that could be outstanding
2499          */
2500         ioc->shost->can_queue = ioc->scsiio_depth - (2);
2501         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host: "
2502             "can_queue depth (%d)\n", ioc->name, ioc->shost->can_queue));
2503
2504         /* contiguous pool for request and chains, 16 byte align, one extra "
2505          * "frame for smid=0
2506          */
2507         ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth;
2508         sz = ((ioc->scsiio_depth + 1) * ioc->request_sz);
2509
2510         /* hi-priority queue */
2511         sz += (ioc->hi_priority_depth * ioc->request_sz);
2512
2513         /* internal queue */
2514         sz += (ioc->internal_depth * ioc->request_sz);
2515
2516         ioc->request_dma_sz = sz;
2517         ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
2518         if (!ioc->request) {
2519                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2520                     "failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2521                     "total(%d kB)\n", ioc->name, ioc->hba_queue_depth,
2522                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2523                 if (ioc->scsiio_depth < MPT2SAS_SAS_QUEUE_DEPTH)
2524                         goto out;
2525                 retry_sz += 64;
2526                 ioc->hba_queue_depth = max_request_credit - retry_sz;
2527                 goto retry_allocation;
2528         }
2529
2530         if (retry_sz)
2531                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2532                     "succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2533                     "total(%d kb)\n", ioc->name, ioc->hba_queue_depth,
2534                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2535
2536
2537         /* hi-priority queue */
2538         ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) *
2539             ioc->request_sz);
2540         ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) *
2541             ioc->request_sz);
2542
2543         /* internal queue */
2544         ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth *
2545             ioc->request_sz);
2546         ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth *
2547             ioc->request_sz);
2548
2549
2550         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool(0x%p): "
2551             "depth(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2552             ioc->request, ioc->hba_queue_depth, ioc->request_sz,
2553             (ioc->hba_queue_depth * ioc->request_sz)/1024));
2554         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool: dma(0x%llx)\n",
2555             ioc->name, (unsigned long long) ioc->request_dma));
2556         total_sz += sz;
2557
2558         sz = ioc->scsiio_depth * sizeof(struct scsiio_tracker);
2559         ioc->scsi_lookup_pages = get_order(sz);
2560         ioc->scsi_lookup = (struct scsiio_tracker *)__get_free_pages(
2561             GFP_KERNEL, ioc->scsi_lookup_pages);
2562         if (!ioc->scsi_lookup) {
2563                 printk(MPT2SAS_ERR_FMT "scsi_lookup: get_free_pages failed, "
2564                     "sz(%d)\n", ioc->name, (int)sz);
2565                 goto out;
2566         }
2567
2568         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsiio(0x%p): "
2569             "depth(%d)\n", ioc->name, ioc->request,
2570             ioc->scsiio_depth));
2571
2572         ioc->chain_depth = min_t(u32, ioc->chain_depth, MAX_CHAIN_DEPTH);
2573         sz = ioc->chain_depth * sizeof(struct chain_tracker);
2574         ioc->chain_pages = get_order(sz);
2575
2576         ioc->chain_lookup = (struct chain_tracker *)__get_free_pages(
2577             GFP_KERNEL, ioc->chain_pages);
2578         if (!ioc->chain_lookup) {
2579                 printk(MPT2SAS_ERR_FMT "chain_lookup: get_free_pages failed, "
2580                     "sz(%d)\n", ioc->name, (int)sz);
2581                 goto out;
2582         }
2583         ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev,
2584             ioc->request_sz, 16, 0);
2585         if (!ioc->chain_dma_pool) {
2586                 printk(MPT2SAS_ERR_FMT "chain_dma_pool: pci_pool_create "
2587                     "failed\n", ioc->name);
2588                 goto out;
2589         }
2590         for (i = 0; i < ioc->chain_depth; i++) {
2591                 ioc->chain_lookup[i].chain_buffer = pci_pool_alloc(
2592                     ioc->chain_dma_pool , GFP_KERNEL,
2593                     &ioc->chain_lookup[i].chain_buffer_dma);
2594                 if (!ioc->chain_lookup[i].chain_buffer) {
2595                         ioc->chain_depth = i;
2596                         goto chain_done;
2597                 }
2598                 total_sz += ioc->request_sz;
2599         }
2600 chain_done:
2601         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "chain pool depth"
2602             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2603             ioc->chain_depth, ioc->request_sz, ((ioc->chain_depth *
2604             ioc->request_sz))/1024));
2605
2606         /* initialize hi-priority queue smid's */
2607         ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth,
2608             sizeof(struct request_tracker), GFP_KERNEL);
2609         if (!ioc->hpr_lookup) {
2610                 printk(MPT2SAS_ERR_FMT "hpr_lookup: kcalloc failed\n",
2611                     ioc->name);
2612                 goto out;
2613         }
2614         ioc->hi_priority_smid = ioc->scsiio_depth + 1;
2615         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hi_priority(0x%p): "
2616             "depth(%d), start smid(%d)\n", ioc->name, ioc->hi_priority,
2617             ioc->hi_priority_depth, ioc->hi_priority_smid));
2618
2619         /* initialize internal queue smid's */
2620         ioc->internal_lookup = kcalloc(ioc->internal_depth,
2621             sizeof(struct request_tracker), GFP_KERNEL);
2622         if (!ioc->internal_lookup) {
2623                 printk(MPT2SAS_ERR_FMT "internal_lookup: kcalloc failed\n",
2624                     ioc->name);
2625                 goto out;
2626         }
2627         ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth;
2628         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "internal(0x%p): "
2629             "depth(%d), start smid(%d)\n", ioc->name, ioc->internal,
2630              ioc->internal_depth, ioc->internal_smid));
2631
2632         /* sense buffers, 4 byte align */
2633         sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE;
2634         ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
2635             0);
2636         if (!ioc->sense_dma_pool) {
2637                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_create failed\n",
2638                     ioc->name);
2639                 goto out;
2640         }
2641         ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
2642             &ioc->sense_dma);
2643         if (!ioc->sense) {
2644                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_alloc failed\n",
2645                     ioc->name);
2646                 goto out;
2647         }
2648         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2649             "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
2650             "(%d kB)\n", ioc->name, ioc->sense, ioc->scsiio_depth,
2651             SCSI_SENSE_BUFFERSIZE, sz/1024));
2652         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_dma(0x%llx)\n",
2653             ioc->name, (unsigned long long)ioc->sense_dma));
2654         total_sz += sz;
2655
2656         /* reply pool, 4 byte align */
2657         sz = ioc->reply_free_queue_depth * ioc->reply_sz;
2658         ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
2659             0);
2660         if (!ioc->reply_dma_pool) {
2661                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_create failed\n",
2662                     ioc->name);
2663                 goto out;
2664         }
2665         ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
2666             &ioc->reply_dma);
2667         if (!ioc->reply) {
2668                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_alloc failed\n",
2669                     ioc->name);
2670                 goto out;
2671         }
2672         ioc->reply_dma_min_address = (u32)(ioc->reply_dma);
2673         ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz;
2674         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply pool(0x%p): depth"
2675             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->reply,
2676             ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
2677         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_dma(0x%llx)\n",
2678             ioc->name, (unsigned long long)ioc->reply_dma));
2679         total_sz += sz;
2680
2681         /* reply free queue, 16 byte align */
2682         sz = ioc->reply_free_queue_depth * 4;
2683         ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
2684             ioc->pdev, sz, 16, 0);
2685         if (!ioc->reply_free_dma_pool) {
2686                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_create "
2687                     "failed\n", ioc->name);
2688                 goto out;
2689         }
2690         ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
2691             &ioc->reply_free_dma);
2692         if (!ioc->reply_free) {
2693                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_alloc "
2694                     "failed\n", ioc->name);
2695                 goto out;
2696         }
2697         memset(ioc->reply_free, 0, sz);
2698         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free pool(0x%p): "
2699             "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
2700             ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
2701         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_dma"
2702             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->reply_free_dma));
2703         total_sz += sz;
2704
2705         /* reply post queue, 16 byte align */
2706         reply_post_free_sz = ioc->reply_post_queue_depth *
2707             sizeof(Mpi2DefaultReplyDescriptor_t);
2708         if (_base_is_controller_msix_enabled(ioc))
2709                 sz = reply_post_free_sz * ioc->reply_queue_count;
2710         else
2711                 sz = reply_post_free_sz;
2712         ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
2713             ioc->pdev, sz, 16, 0);
2714         if (!ioc->reply_post_free_dma_pool) {
2715                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_create "
2716                     "failed\n", ioc->name);
2717                 goto out;
2718         }
2719         ioc->reply_post_free = pci_pool_alloc(ioc->reply_post_free_dma_pool ,
2720             GFP_KERNEL, &ioc->reply_post_free_dma);
2721         if (!ioc->reply_post_free) {
2722                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_alloc "
2723                     "failed\n", ioc->name);
2724                 goto out;
2725         }
2726         memset(ioc->reply_post_free, 0, sz);
2727         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply post free pool"
2728             "(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n",
2729             ioc->name, ioc->reply_post_free, ioc->reply_post_queue_depth, 8,
2730             sz/1024));
2731         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_post_free_dma = "
2732             "(0x%llx)\n", ioc->name, (unsigned long long)
2733             ioc->reply_post_free_dma));
2734         total_sz += sz;
2735
2736         ioc->config_page_sz = 512;
2737         ioc->config_page = pci_alloc_consistent(ioc->pdev,
2738             ioc->config_page_sz, &ioc->config_page_dma);
2739         if (!ioc->config_page) {
2740                 printk(MPT2SAS_ERR_FMT "config page: pci_pool_alloc "
2741                     "failed\n", ioc->name);
2742                 goto out;
2743         }
2744         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config page(0x%p): size"
2745             "(%d)\n", ioc->name, ioc->config_page, ioc->config_page_sz));
2746         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config_page_dma"
2747             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->config_page_dma));
2748         total_sz += ioc->config_page_sz;
2749
2750         printk(MPT2SAS_INFO_FMT "Allocated physical memory: size(%d kB)\n",
2751             ioc->name, total_sz/1024);
2752         printk(MPT2SAS_INFO_FMT "Current Controller Queue Depth(%d), "
2753             "Max Controller Queue Depth(%d)\n",
2754             ioc->name, ioc->shost->can_queue, facts->RequestCredit);
2755         printk(MPT2SAS_INFO_FMT "Scatter Gather Elements per IO(%d)\n",
2756             ioc->name, ioc->shost->sg_tablesize);
2757         return 0;
2758
2759  out:
2760         return -ENOMEM;
2761 }
2762
2763
2764 /**
2765  * mpt2sas_base_get_iocstate - Get the current state of a MPT adapter.
2766  * @ioc: Pointer to MPT_ADAPTER structure
2767  * @cooked: Request raw or cooked IOC state
2768  *
2769  * Returns all IOC Doorbell register bits if cooked==0, else just the
2770  * Doorbell bits in MPI_IOC_STATE_MASK.
2771  */
2772 u32
2773 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked)
2774 {
2775         u32 s, sc;
2776
2777         s = readl(&ioc->chip->Doorbell);
2778         sc = s & MPI2_IOC_STATE_MASK;
2779         return cooked ? sc : s;
2780 }
2781
2782 /**
2783  * _base_wait_on_iocstate - waiting on a particular ioc state
2784  * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
2785  * @timeout: timeout in second
2786  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2787  *
2788  * Returns 0 for success, non-zero for failure.
2789  */
2790 static int
2791 _base_wait_on_iocstate(struct MPT2SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
2792     int sleep_flag)
2793 {
2794         u32 count, cntdn;
2795         u32 current_state;
2796
2797         count = 0;
2798         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2799         do {
2800                 current_state = mpt2sas_base_get_iocstate(ioc, 1);
2801                 if (current_state == ioc_state)
2802                         return 0;
2803                 if (count && current_state == MPI2_IOC_STATE_FAULT)
2804                         break;
2805                 if (sleep_flag == CAN_SLEEP)
2806                         msleep(1);
2807                 else
2808                         udelay(500);
2809                 count++;
2810         } while (--cntdn);
2811
2812         return current_state;
2813 }
2814
2815 /**
2816  * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
2817  * a write to the doorbell)
2818  * @ioc: per adapter object
2819  * @timeout: timeout in second
2820  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2821  *
2822  * Returns 0 for success, non-zero for failure.
2823  *
2824  * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
2825  */
2826 static int
2827 _base_wait_for_doorbell_int(struct MPT2SAS_ADAPTER *ioc, int timeout,
2828     int sleep_flag)
2829 {
2830         u32 cntdn, count;
2831         u32 int_status;
2832
2833         count = 0;
2834         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2835         do {
2836                 int_status = readl(&ioc->chip->HostInterruptStatus);
2837                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2838                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2839                             "successful count(%d), timeout(%d)\n", ioc->name,
2840                             __func__, count, timeout));
2841                         return 0;
2842                 }
2843                 if (sleep_flag == CAN_SLEEP)
2844                         msleep(1);
2845                 else
2846                         udelay(500);
2847                 count++;
2848         } while (--cntdn);
2849
2850         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2851             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2852         return -EFAULT;
2853 }
2854
2855 /**
2856  * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
2857  * @ioc: per adapter object
2858  * @timeout: timeout in second
2859  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2860  *
2861  * Returns 0 for success, non-zero for failure.
2862  *
2863  * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
2864  * doorbell.
2865  */
2866 static int
2867 _base_wait_for_doorbell_ack(struct MPT2SAS_ADAPTER *ioc, int timeout,
2868     int sleep_flag)
2869 {
2870         u32 cntdn, count;
2871         u32 int_status;
2872         u32 doorbell;
2873
2874         count = 0;
2875         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2876         do {
2877                 int_status = readl(&ioc->chip->HostInterruptStatus);
2878                 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
2879                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2880                             "successful count(%d), timeout(%d)\n", ioc->name,
2881                             __func__, count, timeout));
2882                         return 0;
2883                 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2884                         doorbell = readl(&ioc->chip->Doorbell);
2885                         if ((doorbell & MPI2_IOC_STATE_MASK) ==
2886                             MPI2_IOC_STATE_FAULT) {
2887                                 mpt2sas_base_fault_info(ioc , doorbell);
2888                                 return -EFAULT;
2889                         }
2890                 } else if (int_status == 0xFFFFFFFF)
2891                         goto out;
2892
2893                 if (sleep_flag == CAN_SLEEP)
2894                         msleep(1);
2895                 else
2896                         udelay(500);
2897                 count++;
2898         } while (--cntdn);
2899
2900  out:
2901         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2902             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2903         return -EFAULT;
2904 }
2905
2906 /**
2907  * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
2908  * @ioc: per adapter object
2909  * @timeout: timeout in second
2910  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2911  *
2912  * Returns 0 for success, non-zero for failure.
2913  *
2914  */
2915 static int
2916 _base_wait_for_doorbell_not_used(struct MPT2SAS_ADAPTER *ioc, int timeout,
2917     int sleep_flag)
2918 {
2919         u32 cntdn, count;
2920         u32 doorbell_reg;
2921
2922         count = 0;
2923         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2924         do {
2925                 doorbell_reg = readl(&ioc->chip->Doorbell);
2926                 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
2927                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2928                             "successful count(%d), timeout(%d)\n", ioc->name,
2929                             __func__, count, timeout));
2930                         return 0;
2931                 }
2932                 if (sleep_flag == CAN_SLEEP)
2933                         msleep(1);
2934                 else
2935                         udelay(500);
2936                 count++;
2937         } while (--cntdn);
2938
2939         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2940             "doorbell_reg(%x)!\n", ioc->name, __func__, count, doorbell_reg);
2941         return -EFAULT;
2942 }
2943
2944 /**
2945  * _base_send_ioc_reset - send doorbell reset
2946  * @ioc: per adapter object
2947  * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
2948  * @timeout: timeout in second
2949  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2950  *
2951  * Returns 0 for success, non-zero for failure.
2952  */
2953 static int
2954 _base_send_ioc_reset(struct MPT2SAS_ADAPTER *ioc, u8 reset_type, int timeout,
2955     int sleep_flag)
2956 {
2957         u32 ioc_state;
2958         int r = 0;
2959
2960         if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
2961                 printk(MPT2SAS_ERR_FMT "%s: unknown reset_type\n",
2962                     ioc->name, __func__);
2963                 return -EFAULT;
2964         }
2965
2966         if (!(ioc->facts.IOCCapabilities &
2967            MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
2968                 return -EFAULT;
2969
2970         printk(MPT2SAS_INFO_FMT "sending message unit reset !!\n", ioc->name);
2971
2972         writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
2973             &ioc->chip->Doorbell);
2974         if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
2975                 r = -EFAULT;
2976                 goto out;
2977         }
2978         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
2979             timeout, sleep_flag);
2980         if (ioc_state) {
2981                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
2982                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
2983                 r = -EFAULT;
2984                 goto out;
2985         }
2986  out:
2987         printk(MPT2SAS_INFO_FMT "message unit reset: %s\n",
2988             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
2989         return r;
2990 }
2991
2992 /**
2993  * _base_handshake_req_reply_wait - send request thru doorbell interface
2994  * @ioc: per adapter object
2995  * @request_bytes: request length
2996  * @request: pointer having request payload
2997  * @reply_bytes: reply length
2998  * @reply: pointer to reply payload
2999  * @timeout: timeout in second
3000  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3001  *
3002  * Returns 0 for success, non-zero for failure.
3003  */
3004 static int
3005 _base_handshake_req_reply_wait(struct MPT2SAS_ADAPTER *ioc, int request_bytes,
3006     u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
3007 {
3008         MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
3009         int i;
3010         u8 failed;
3011         u16 dummy;
3012         __le32 *mfp;
3013
3014         /* make sure doorbell is not in use */
3015         if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
3016                 printk(MPT2SAS_ERR_FMT "doorbell is in use "
3017                     " (line=%d)\n", ioc->name, __LINE__);
3018                 return -EFAULT;
3019         }
3020
3021         /* clear pending doorbell interrupts from previous state changes */
3022         if (readl(&ioc->chip->HostInterruptStatus) &
3023             MPI2_HIS_IOC2SYS_DB_STATUS)
3024                 writel(0, &ioc->chip->HostInterruptStatus);
3025
3026         /* send message to ioc */
3027         writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
3028             ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
3029             &ioc->chip->Doorbell);
3030
3031         if ((_base_wait_for_doorbell_int(ioc, 5, NO_SLEEP))) {
3032                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3033                    "int failed (line=%d)\n", ioc->name, __LINE__);
3034                 return -EFAULT;
3035         }
3036         writel(0, &ioc->chip->HostInterruptStatus);
3037
3038         if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
3039                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3040                     "ack failed (line=%d)\n", ioc->name, __LINE__);
3041                 return -EFAULT;
3042         }
3043
3044         /* send message 32-bits at a time */
3045         for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
3046                 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
3047                 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
3048                         failed = 1;
3049         }
3050
3051         if (failed) {
3052                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3053                     "sending request failed (line=%d)\n", ioc->name, __LINE__);
3054                 return -EFAULT;
3055         }
3056
3057         /* now wait for the reply */
3058         if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
3059                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3060                    "int failed (line=%d)\n", ioc->name, __LINE__);
3061                 return -EFAULT;
3062         }
3063
3064         /* read the first two 16-bits, it gives the total length of the reply */
3065         reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3066             & MPI2_DOORBELL_DATA_MASK);
3067         writel(0, &ioc->chip->HostInterruptStatus);
3068         if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3069                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3070                    "int failed (line=%d)\n", ioc->name, __LINE__);
3071                 return -EFAULT;
3072         }
3073         reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3074             & MPI2_DOORBELL_DATA_MASK);
3075         writel(0, &ioc->chip->HostInterruptStatus);
3076
3077         for (i = 2; i < default_reply->MsgLength * 2; i++)  {
3078                 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3079                         printk(MPT2SAS_ERR_FMT "doorbell "
3080                             "handshake int failed (line=%d)\n", ioc->name,
3081                             __LINE__);
3082                         return -EFAULT;
3083                 }
3084                 if (i >=  reply_bytes/2) /* overflow case */
3085                         dummy = readl(&ioc->chip->Doorbell);
3086                 else
3087                         reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3088                             & MPI2_DOORBELL_DATA_MASK);
3089                 writel(0, &ioc->chip->HostInterruptStatus);
3090         }
3091
3092         _base_wait_for_doorbell_int(ioc, 5, sleep_flag);
3093         if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
3094                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "doorbell is in use "
3095                     " (line=%d)\n", ioc->name, __LINE__));
3096         }
3097         writel(0, &ioc->chip->HostInterruptStatus);
3098
3099         if (ioc->logging_level & MPT_DEBUG_INIT) {
3100                 mfp = (__le32 *)reply;
3101                 printk(KERN_INFO "\toffset:data\n");
3102                 for (i = 0; i < reply_bytes/4; i++)
3103                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3104                             le32_to_cpu(mfp[i]));
3105         }
3106         return 0;
3107 }
3108
3109 /**
3110  * mpt2sas_base_sas_iounit_control - send sas iounit control to FW
3111  * @ioc: per adapter object
3112  * @mpi_reply: the reply payload from FW
3113  * @mpi_request: the request payload sent to FW
3114  *
3115  * The SAS IO Unit Control Request message allows the host to perform low-level
3116  * operations, such as resets on the PHYs of the IO Unit, also allows the host
3117  * to obtain the IOC assigned device handles for a device if it has other
3118  * identifying information about the device, in addition allows the host to
3119  * remove IOC resources associated with the device.
3120  *
3121  * Returns 0 for success, non-zero for failure.
3122  */
3123 int
3124 mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
3125     Mpi2SasIoUnitControlReply_t *mpi_reply,
3126     Mpi2SasIoUnitControlRequest_t *mpi_request)
3127 {
3128         u16 smid;
3129         u32 ioc_state;
3130         unsigned long timeleft;
3131         u8 issue_reset;
3132         int rc;
3133         void *request;
3134         u16 wait_state_count;
3135
3136         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3137             __func__));
3138
3139         mutex_lock(&ioc->base_cmds.mutex);
3140
3141         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3142                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3143                     ioc->name, __func__);
3144                 rc = -EAGAIN;
3145                 goto out;
3146         }
3147
3148         wait_state_count = 0;
3149         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3150         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3151                 if (wait_state_count++ == 10) {
3152                         printk(MPT2SAS_ERR_FMT
3153                             "%s: failed due to ioc not operational\n",
3154                             ioc->name, __func__);
3155                         rc = -EFAULT;
3156                         goto out;
3157                 }
3158                 ssleep(1);
3159                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3160                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3161                     "operational state(count=%d)\n", ioc->name,
3162                     __func__, wait_state_count);
3163         }
3164
3165         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3166         if (!smid) {
3167                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3168                     ioc->name, __func__);
3169                 rc = -EAGAIN;
3170                 goto out;
3171         }
3172
3173         rc = 0;
3174         ioc->base_cmds.status = MPT2_CMD_PENDING;
3175         request = mpt2sas_base_get_msg_frame(ioc, smid);
3176         ioc->base_cmds.smid = smid;
3177         memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
3178         if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3179             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
3180                 ioc->ioc_link_reset_in_progress = 1;
3181         init_completion(&ioc->base_cmds.done);
3182         mpt2sas_base_put_smid_default(ioc, smid);
3183         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3184             msecs_to_jiffies(10000));
3185         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3186             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
3187             ioc->ioc_link_reset_in_progress)
3188                 ioc->ioc_link_reset_in_progress = 0;
3189         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3190                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3191                     ioc->name, __func__);
3192                 _debug_dump_mf(mpi_request,
3193                     sizeof(Mpi2SasIoUnitControlRequest_t)/4);
3194                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3195                         issue_reset = 1;
3196                 goto issue_host_reset;
3197         }
3198         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3199                 memcpy(mpi_reply, ioc->base_cmds.reply,
3200                     sizeof(Mpi2SasIoUnitControlReply_t));
3201         else
3202                 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
3203         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3204         goto out;
3205
3206  issue_host_reset:
3207         if (issue_reset)
3208                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3209                     FORCE_BIG_HAMMER);
3210         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3211         rc = -EFAULT;
3212  out:
3213         mutex_unlock(&ioc->base_cmds.mutex);
3214         return rc;
3215 }
3216
3217
3218 /**
3219  * mpt2sas_base_scsi_enclosure_processor - sending request to sep device
3220  * @ioc: per adapter object
3221  * @mpi_reply: the reply payload from FW
3222  * @mpi_request: the request payload sent to FW
3223  *
3224  * The SCSI Enclosure Processor request message causes the IOC to
3225  * communicate with SES devices to control LED status signals.
3226  *
3227  * Returns 0 for success, non-zero for failure.
3228  */
3229 int
3230 mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
3231     Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
3232 {
3233         u16 smid;
3234         u32 ioc_state;
3235         unsigned long timeleft;
3236         u8 issue_reset;
3237         int rc;
3238         void *request;
3239         u16 wait_state_count;
3240
3241         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3242             __func__));
3243
3244         mutex_lock(&ioc->base_cmds.mutex);
3245
3246         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3247                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3248                     ioc->name, __func__);
3249                 rc = -EAGAIN;
3250                 goto out;
3251         }
3252
3253         wait_state_count = 0;
3254         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3255         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3256                 if (wait_state_count++ == 10) {
3257                         printk(MPT2SAS_ERR_FMT
3258                             "%s: failed due to ioc not operational\n",
3259                             ioc->name, __func__);
3260                         rc = -EFAULT;
3261                         goto out;
3262                 }
3263                 ssleep(1);
3264                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3265                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3266                     "operational state(count=%d)\n", ioc->name,
3267                     __func__, wait_state_count);
3268         }
3269
3270         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3271         if (!smid) {
3272                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3273                     ioc->name, __func__);
3274                 rc = -EAGAIN;
3275                 goto out;
3276         }
3277
3278         rc = 0;
3279         ioc->base_cmds.status = MPT2_CMD_PENDING;
3280         request = mpt2sas_base_get_msg_frame(ioc, smid);
3281         ioc->base_cmds.smid = smid;
3282         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
3283         init_completion(&ioc->base_cmds.done);
3284         mpt2sas_base_put_smid_default(ioc, smid);
3285         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3286             msecs_to_jiffies(10000));
3287         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3288                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3289                     ioc->name, __func__);
3290                 _debug_dump_mf(mpi_request,
3291                     sizeof(Mpi2SepRequest_t)/4);
3292                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3293                         issue_reset = 1;
3294                 goto issue_host_reset;
3295         }
3296         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3297                 memcpy(mpi_reply, ioc->base_cmds.reply,
3298                     sizeof(Mpi2SepReply_t));
3299         else
3300                 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
3301         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3302         goto out;
3303
3304  issue_host_reset:
3305         if (issue_reset)
3306                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3307                     FORCE_BIG_HAMMER);
3308         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3309         rc = -EFAULT;
3310  out:
3311         mutex_unlock(&ioc->base_cmds.mutex);
3312         return rc;
3313 }
3314
3315 /**
3316  * _base_get_port_facts - obtain port facts reply and save in ioc
3317  * @ioc: per adapter object
3318  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3319  *
3320  * Returns 0 for success, non-zero for failure.
3321  */
3322 static int
3323 _base_get_port_facts(struct MPT2SAS_ADAPTER *ioc, int port, int sleep_flag)
3324 {
3325         Mpi2PortFactsRequest_t mpi_request;
3326         Mpi2PortFactsReply_t mpi_reply;
3327         struct mpt2sas_port_facts *pfacts;
3328         int mpi_reply_sz, mpi_request_sz, r;
3329
3330         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3331             __func__));
3332
3333         mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
3334         mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
3335         memset(&mpi_request, 0, mpi_request_sz);
3336         mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
3337         mpi_request.PortNumber = port;
3338         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3339             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3340
3341         if (r != 0) {
3342                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3343                     ioc->name, __func__, r);
3344                 return r;
3345         }
3346
3347         pfacts = &ioc->pfacts[port];
3348         memset(pfacts, 0, sizeof(Mpi2PortFactsReply_t));
3349         pfacts->PortNumber = mpi_reply.PortNumber;
3350         pfacts->VP_ID = mpi_reply.VP_ID;
3351         pfacts->VF_ID = mpi_reply.VF_ID;
3352         pfacts->MaxPostedCmdBuffers =
3353             le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
3354
3355         return 0;
3356 }
3357
3358 /**
3359  * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
3360  * @ioc: per adapter object
3361  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3362  *
3363  * Returns 0 for success, non-zero for failure.
3364  */
3365 static int
3366 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3367 {
3368         Mpi2IOCFactsRequest_t mpi_request;
3369         Mpi2IOCFactsReply_t mpi_reply;
3370         struct mpt2sas_facts *facts;
3371         int mpi_reply_sz, mpi_request_sz, r;
3372
3373         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3374             __func__));
3375
3376         mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
3377         mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
3378         memset(&mpi_request, 0, mpi_request_sz);
3379         mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
3380         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3381             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3382
3383         if (r != 0) {
3384                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3385                     ioc->name, __func__, r);
3386                 return r;
3387         }
3388
3389         facts = &ioc->facts;
3390         memset(facts, 0, sizeof(Mpi2IOCFactsReply_t));
3391         facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
3392         facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
3393         facts->VP_ID = mpi_reply.VP_ID;
3394         facts->VF_ID = mpi_reply.VF_ID;
3395         facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
3396         facts->MaxChainDepth = mpi_reply.MaxChainDepth;
3397         facts->WhoInit = mpi_reply.WhoInit;
3398         facts->NumberOfPorts = mpi_reply.NumberOfPorts;
3399         facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors;
3400         facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
3401         facts->MaxReplyDescriptorPostQueueDepth =
3402             le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
3403         facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
3404         facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
3405         if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
3406                 ioc->ir_firmware = 1;
3407         facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
3408         facts->IOCRequestFrameSize =
3409             le16_to_cpu(mpi_reply.IOCRequestFrameSize);
3410         facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
3411         facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
3412         ioc->shost->max_id = -1;
3413         facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
3414         facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
3415         facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
3416         facts->HighPriorityCredit =
3417             le16_to_cpu(mpi_reply.HighPriorityCredit);
3418         facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
3419         facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
3420
3421         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hba queue depth(%d), "
3422             "max chains per io(%d)\n", ioc->name, facts->RequestCredit,
3423             facts->MaxChainDepth));
3424         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request frame size(%d), "
3425             "reply frame size(%d)\n", ioc->name,
3426             facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
3427         return 0;
3428 }
3429
3430 /**
3431  * _base_send_ioc_init - send ioc_init to firmware
3432  * @ioc: per adapter object
3433  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3434  *
3435  * Returns 0 for success, non-zero for failure.
3436  */
3437 static int
3438 _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3439 {
3440         Mpi2IOCInitRequest_t mpi_request;
3441         Mpi2IOCInitReply_t mpi_reply;
3442         int r;
3443         struct timeval current_time;
3444         u16 ioc_status;
3445
3446         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3447             __func__));
3448
3449         memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
3450         mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
3451         mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
3452         mpi_request.VF_ID = 0; /* TODO */
3453         mpi_request.VP_ID = 0;
3454         mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
3455         mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
3456
3457         if (_base_is_controller_msix_enabled(ioc))
3458                 mpi_request.HostMSIxVectors = ioc->reply_queue_count;
3459         mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
3460         mpi_request.ReplyDescriptorPostQueueDepth =
3461             cpu_to_le16(ioc->reply_post_queue_depth);
3462         mpi_request.ReplyFreeQueueDepth =
3463             cpu_to_le16(ioc->reply_free_queue_depth);
3464
3465         mpi_request.SenseBufferAddressHigh =
3466             cpu_to_le32((u64)ioc->sense_dma >> 32);
3467         mpi_request.SystemReplyAddressHigh =
3468             cpu_to_le32((u64)ioc->reply_dma >> 32);
3469         mpi_request.SystemRequestFrameBaseAddress =
3470             cpu_to_le64((u64)ioc->request_dma);
3471         mpi_request.ReplyFreeQueueAddress =
3472             cpu_to_le64((u64)ioc->reply_free_dma);
3473         mpi_request.ReplyDescriptorPostQueueAddress =
3474             cpu_to_le64((u64)ioc->reply_post_free_dma);
3475
3476
3477         /* This time stamp specifies number of milliseconds
3478          * since epoch ~ midnight January 1, 1970.
3479          */
3480         do_gettimeofday(&current_time);
3481         mpi_request.TimeStamp = cpu_to_le64((u64)current_time.tv_sec * 1000 +
3482             (current_time.tv_usec / 1000));
3483
3484         if (ioc->logging_level & MPT_DEBUG_INIT) {
3485                 __le32 *mfp;
3486                 int i;
3487
3488                 mfp = (__le32 *)&mpi_request;
3489                 printk(KERN_INFO "\toffset:data\n");
3490                 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
3491                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3492                             le32_to_cpu(mfp[i]));
3493         }
3494
3495         r = _base_handshake_req_reply_wait(ioc,
3496             sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
3497             sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
3498             sleep_flag);
3499
3500         if (r != 0) {
3501                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3502                     ioc->name, __func__, r);
3503                 return r;
3504         }
3505
3506         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
3507         if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
3508             mpi_reply.IOCLogInfo) {
3509                 printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
3510                 r = -EIO;
3511         }
3512
3513         return 0;
3514 }
3515
3516 /**
3517  * mpt2sas_port_enable_done - command completion routine for port enable
3518  * @ioc: per adapter object
3519  * @smid: system request message index
3520  * @msix_index: MSIX table index supplied by the OS
3521  * @reply: reply message frame(lower 32bit addr)
3522  *
3523  * Return 1 meaning mf should be freed from _base_interrupt
3524  *        0 means the mf is freed from this function.
3525  */
3526 u8
3527 mpt2sas_port_enable_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3528         u32 reply)
3529 {
3530         MPI2DefaultReply_t *mpi_reply;
3531         u16 ioc_status;
3532
3533         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
3534         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
3535                 return 1;
3536
3537         if (ioc->port_enable_cmds.status == MPT2_CMD_NOT_USED)
3538                 return 1;
3539
3540         ioc->port_enable_cmds.status |= MPT2_CMD_COMPLETE;
3541         if (mpi_reply) {
3542                 ioc->port_enable_cmds.status |= MPT2_CMD_REPLY_VALID;
3543                 memcpy(ioc->port_enable_cmds.reply, mpi_reply,
3544                     mpi_reply->MsgLength*4);
3545         }
3546         ioc->port_enable_cmds.status &= ~MPT2_CMD_PENDING;
3547
3548         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3549
3550         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
3551                 ioc->port_enable_failed = 1;
3552
3553         if (ioc->is_driver_loading) {
3554                 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
3555                         mpt2sas_port_enable_complete(ioc);
3556                         return 1;
3557                 } else {
3558                         ioc->start_scan_failed = ioc_status;
3559                         ioc->start_scan = 0;
3560                         return 1;
3561                 }
3562         }
3563         complete(&ioc->port_enable_cmds.done);
3564         return 1;
3565 }
3566
3567
3568 /**
3569  * _base_send_port_enable - send port_enable(discovery stuff) to firmware
3570  * @ioc: per adapter object
3571  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3572  *
3573  * Returns 0 for success, non-zero for failure.
3574  */
3575 static int
3576 _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3577 {
3578         Mpi2PortEnableRequest_t *mpi_request;
3579         Mpi2PortEnableReply_t *mpi_reply;
3580         unsigned long timeleft;
3581         int r = 0;
3582         u16 smid;
3583         u16 ioc_status;
3584
3585         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3586
3587         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3588                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3589                     ioc->name, __func__);
3590                 return -EAGAIN;
3591         }
3592
3593         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3594         if (!smid) {
3595                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3596                     ioc->name, __func__);
3597                 return -EAGAIN;
3598         }
3599
3600         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3601         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3602         ioc->port_enable_cmds.smid = smid;
3603         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3604         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3605
3606         init_completion(&ioc->port_enable_cmds.done);
3607         mpt2sas_base_put_smid_default(ioc, smid);
3608         timeleft = wait_for_completion_timeout(&ioc->port_enable_cmds.done,
3609             300*HZ);
3610         if (!(ioc->port_enable_cmds.status & MPT2_CMD_COMPLETE)) {
3611                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3612                     ioc->name, __func__);
3613                 _debug_dump_mf(mpi_request,
3614                     sizeof(Mpi2PortEnableRequest_t)/4);
3615                 if (ioc->port_enable_cmds.status & MPT2_CMD_RESET)
3616                         r = -EFAULT;
3617                 else
3618                         r = -ETIME;
3619                 goto out;
3620         }
3621         mpi_reply = ioc->port_enable_cmds.reply;
3622
3623         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3624         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
3625                 printk(MPT2SAS_ERR_FMT "%s: failed with (ioc_status=0x%08x)\n",
3626                     ioc->name, __func__, ioc_status);
3627                 r = -EFAULT;
3628                 goto out;
3629         }
3630  out:
3631         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
3632         printk(MPT2SAS_INFO_FMT "port enable: %s\n", ioc->name, ((r == 0) ?
3633             "SUCCESS" : "FAILED"));
3634         return r;
3635 }
3636
3637 /**
3638  * mpt2sas_port_enable - initiate firmware discovery (don't wait for reply)
3639  * @ioc: per adapter object
3640  *
3641  * Returns 0 for success, non-zero for failure.
3642  */
3643 int
3644 mpt2sas_port_enable(struct MPT2SAS_ADAPTER *ioc)
3645 {
3646         Mpi2PortEnableRequest_t *mpi_request;
3647         u16 smid;
3648
3649         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3650
3651         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3652                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3653                     ioc->name, __func__);
3654                 return -EAGAIN;
3655         }
3656
3657         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3658         if (!smid) {
3659                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3660                     ioc->name, __func__);
3661                 return -EAGAIN;
3662         }
3663
3664         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3665         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3666         ioc->port_enable_cmds.smid = smid;
3667         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3668         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3669
3670         mpt2sas_base_put_smid_default(ioc, smid);
3671         return 0;
3672 }
3673
3674 /**
3675  * _base_determine_wait_on_discovery - desposition
3676  * @ioc: per adapter object
3677  *
3678  * Decide whether to wait on discovery to complete. Used to either
3679  * locate boot device, or report volumes ahead of physical devices.
3680  *
3681  * Returns 1 for wait, 0 for don't wait
3682  */
3683 static int
3684 _base_determine_wait_on_discovery(struct MPT2SAS_ADAPTER *ioc)
3685 {
3686         /* We wait for discovery to complete if IR firmware is loaded.
3687          * The sas topology events arrive before PD events, so we need time to
3688          * turn on the bit in ioc->pd_handles to indicate PD
3689          * Also, it maybe required to report Volumes ahead of physical
3690          * devices when MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING is set.
3691          */
3692         if (ioc->ir_firmware)
3693                 return 1;
3694
3695         /* if no Bios, then we don't need to wait */
3696         if (!ioc->bios_pg3.BiosVersion)
3697                 return 0;
3698
3699         /* Bios is present, then we drop down here.
3700          *
3701          * If there any entries in the Bios Page 2, then we wait
3702          * for discovery to complete.
3703          */
3704
3705         /* Current Boot Device */
3706         if ((ioc->bios_pg2.CurrentBootDeviceForm &
3707             MPI2_BIOSPAGE2_FORM_MASK) ==
3708             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3709         /* Request Boot Device */
3710            (ioc->bios_pg2.ReqBootDeviceForm &
3711             MPI2_BIOSPAGE2_FORM_MASK) ==
3712             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3713         /* Alternate Request Boot Device */
3714            (ioc->bios_pg2.ReqAltBootDeviceForm &
3715             MPI2_BIOSPAGE2_FORM_MASK) ==
3716             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED)
3717                 return 0;
3718
3719         return 1;
3720 }
3721
3722
3723 /**
3724  * _base_unmask_events - turn on notification for this event
3725  * @ioc: per adapter object
3726  * @event: firmware event
3727  *
3728  * The mask is stored in ioc->event_masks.
3729  */
3730 static void
3731 _base_unmask_events(struct MPT2SAS_ADAPTER *ioc, u16 event)
3732 {
3733         u32 desired_event;
3734
3735         if (event >= 128)
3736                 return;
3737
3738         desired_event = (1 << (event % 32));
3739
3740         if (event < 32)
3741                 ioc->event_masks[0] &= ~desired_event;
3742         else if (event < 64)
3743                 ioc->event_masks[1] &= ~desired_event;
3744         else if (event < 96)
3745                 ioc->event_masks[2] &= ~desired_event;
3746         else if (event < 128)
3747                 ioc->event_masks[3] &= ~desired_event;
3748 }
3749
3750 /**
3751  * _base_event_notification - send event notification
3752  * @ioc: per adapter object
3753  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3754  *
3755  * Returns 0 for success, non-zero for failure.
3756  */
3757 static int
3758 _base_event_notification(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3759 {
3760         Mpi2EventNotificationRequest_t *mpi_request;
3761         unsigned long timeleft;
3762         u16 smid;
3763         int r = 0;
3764         int i;
3765
3766         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3767             __func__));
3768
3769         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
3770                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3771                     ioc->name, __func__);
3772                 return -EAGAIN;
3773         }
3774
3775         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3776         if (!smid) {
3777                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3778                     ioc->name, __func__);
3779                 return -EAGAIN;
3780         }
3781         ioc->base_cmds.status = MPT2_CMD_PENDING;
3782         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3783         ioc->base_cmds.smid = smid;
3784         memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
3785         mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
3786         mpi_request->VF_ID = 0; /* TODO */
3787         mpi_request->VP_ID = 0;
3788         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
3789                 mpi_request->EventMasks[i] =
3790                     cpu_to_le32(ioc->event_masks[i]);
3791         init_completion(&ioc->base_cmds.done);
3792         mpt2sas_base_put_smid_default(ioc, smid);
3793         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
3794         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3795                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3796                     ioc->name, __func__);
3797                 _debug_dump_mf(mpi_request,
3798                     sizeof(Mpi2EventNotificationRequest_t)/4);
3799                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
3800                         r = -EFAULT;
3801                 else
3802                         r = -ETIME;
3803         } else
3804                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: complete\n",
3805                     ioc->name, __func__));
3806         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3807         return r;
3808 }
3809
3810 /**
3811  * mpt2sas_base_validate_event_type - validating event types
3812  * @ioc: per adapter object
3813  * @event: firmware event
3814  *
3815  * This will turn on firmware event notification when application
3816  * ask for that event. We don't mask events that are already enabled.
3817  */
3818 void
3819 mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type)
3820 {
3821         int i, j;
3822         u32 event_mask, desired_event;
3823         u8 send_update_to_fw;
3824
3825         for (i = 0, send_update_to_fw = 0; i <
3826             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
3827                 event_mask = ~event_type[i];
3828                 desired_event = 1;
3829                 for (j = 0; j < 32; j++) {
3830                         if (!(event_mask & desired_event) &&
3831                             (ioc->event_masks[i] & desired_event)) {
3832                                 ioc->event_masks[i] &= ~desired_event;
3833                                 send_update_to_fw = 1;
3834                         }
3835                         desired_event = (desired_event << 1);
3836                 }
3837         }
3838
3839         if (!send_update_to_fw)
3840                 return;
3841
3842         mutex_lock(&ioc->base_cmds.mutex);
3843         _base_event_notification(ioc, CAN_SLEEP);
3844         mutex_unlock(&ioc->base_cmds.mutex);
3845 }
3846
3847 /**
3848  * _base_diag_reset - the "big hammer" start of day reset
3849  * @ioc: per adapter object
3850  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3851  *
3852  * Returns 0 for success, non-zero for failure.
3853  */
3854 static int
3855 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3856 {
3857         u32 host_diagnostic;
3858         u32 ioc_state;
3859         u32 count;
3860         u32 hcb_size;
3861
3862         printk(MPT2SAS_INFO_FMT "sending diag reset !!\n", ioc->name);
3863         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "clear interrupts\n",
3864             ioc->name));
3865
3866         count = 0;
3867         do {
3868                 /* Write magic sequence to WriteSequence register
3869                  * Loop until in diagnostic mode
3870                  */
3871                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "write magic "
3872                     "sequence\n", ioc->name));
3873                 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3874                 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
3875                 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
3876                 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
3877                 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
3878                 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
3879                 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
3880
3881                 /* wait 100 msec */
3882                 if (sleep_flag == CAN_SLEEP)
3883                         msleep(100);
3884                 else
3885                         mdelay(100);
3886
3887                 if (count++ > 20)
3888                         goto out;
3889
3890                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3891                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "wrote magic "
3892                     "sequence: count(%d), host_diagnostic(0x%08x)\n",
3893                     ioc->name, count, host_diagnostic));
3894
3895         } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
3896
3897         hcb_size = readl(&ioc->chip->HCBSize);
3898
3899         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "diag reset: issued\n",
3900             ioc->name));
3901         writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
3902              &ioc->chip->HostDiagnostic);
3903
3904         /* don't access any registers for 50 milliseconds */
3905         msleep(50);
3906
3907         /* 300 second max wait */
3908         for (count = 0; count < 3000000 ; count++) {
3909
3910                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3911
3912                 if (host_diagnostic == 0xFFFFFFFF)
3913                         goto out;
3914                 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
3915                         break;
3916
3917                 /* wait 100 msec */
3918                 if (sleep_flag == CAN_SLEEP)
3919                         msleep(1);
3920                 else
3921                         mdelay(1);
3922         }
3923
3924         if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
3925
3926                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter "
3927                     "assuming the HCB Address points to good F/W\n",
3928                     ioc->name));
3929                 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
3930                 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
3931                 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
3932
3933                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT
3934                     "re-enable the HCDW\n", ioc->name));
3935                 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
3936                     &ioc->chip->HCBSize);
3937         }
3938
3939         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter\n",
3940             ioc->name));
3941         writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
3942             &ioc->chip->HostDiagnostic);
3943
3944         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "disable writes to the "
3945             "diagnostic register\n", ioc->name));
3946         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3947
3948         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "Wait for FW to go to the "
3949             "READY state\n", ioc->name));
3950         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
3951             sleep_flag);
3952         if (ioc_state) {
3953                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3954                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3955                 goto out;
3956         }
3957
3958         printk(MPT2SAS_INFO_FMT "diag reset: SUCCESS\n", ioc->name);
3959         return 0;
3960
3961  out:
3962         printk(MPT2SAS_ERR_FMT "diag reset: FAILED\n", ioc->name);
3963         return -EFAULT;
3964 }
3965
3966 /**
3967  * _base_make_ioc_ready - put controller in READY state
3968  * @ioc: per adapter object
3969  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3970  * @type: FORCE_BIG_HAMMER or SOFT_RESET
3971  *
3972  * Returns 0 for success, non-zero for failure.
3973  */
3974 static int
3975 _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
3976     enum reset_type type)
3977 {
3978         u32 ioc_state;
3979         int rc;
3980
3981         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3982             __func__));
3983
3984         if (ioc->pci_error_recovery)
3985                 return 0;
3986
3987         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
3988         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: ioc_state(0x%08x)\n",
3989             ioc->name, __func__, ioc_state));
3990
3991         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
3992                 return 0;
3993
3994         if (ioc_state & MPI2_DOORBELL_USED) {
3995                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "unexpected doorbell "
3996                     "active!\n", ioc->name));
3997                 goto issue_diag_reset;
3998         }
3999
4000         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
4001                 mpt2sas_base_fault_info(ioc, ioc_state &
4002                     MPI2_DOORBELL_DATA_MASK);
4003                 goto issue_diag_reset;
4004         }
4005
4006         if (type == FORCE_BIG_HAMMER)
4007                 goto issue_diag_reset;
4008
4009         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
4010                 if (!(_base_send_ioc_reset(ioc,
4011                     MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP))) {
4012                         ioc->ioc_reset_count++;
4013                         return 0;
4014         }
4015
4016  issue_diag_reset:
4017         rc = _base_diag_reset(ioc, CAN_SLEEP);
4018         ioc->ioc_reset_count++;
4019         return rc;
4020 }
4021
4022 /**
4023  * _base_make_ioc_operational - put controller in OPERATIONAL state
4024  * @ioc: per adapter object
4025  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4026  *
4027  * Returns 0 for success, non-zero for failure.
4028  */
4029 static int
4030 _base_make_ioc_operational(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4031 {
4032         int r, i;
4033         unsigned long   flags;
4034         u32 reply_address;
4035         u16 smid;
4036         struct _tr_list *delayed_tr, *delayed_tr_next;
4037         u8 hide_flag;
4038         struct adapter_reply_queue *reply_q;
4039         long reply_post_free;
4040         u32 reply_post_free_sz;
4041
4042         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4043             __func__));
4044
4045         /* clean the delayed target reset list */
4046         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4047             &ioc->delayed_tr_list, list) {
4048                 list_del(&delayed_tr->list);
4049                 kfree(delayed_tr);
4050         }
4051
4052         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4053             &ioc->delayed_tr_volume_list, list) {
4054                 list_del(&delayed_tr->list);
4055                 kfree(delayed_tr);
4056         }
4057
4058         /* initialize the scsi lookup free list */
4059         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4060         INIT_LIST_HEAD(&ioc->free_list);
4061         smid = 1;
4062         for (i = 0; i < ioc->scsiio_depth; i++, smid++) {
4063                 INIT_LIST_HEAD(&ioc->scsi_lookup[i].chain_list);
4064                 ioc->scsi_lookup[i].cb_idx = 0xFF;
4065                 ioc->scsi_lookup[i].smid = smid;
4066                 ioc->scsi_lookup[i].scmd = NULL;
4067                 ioc->scsi_lookup[i].direct_io = 0;
4068                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
4069                     &ioc->free_list);
4070         }
4071
4072         /* hi-priority queue */
4073         INIT_LIST_HEAD(&ioc->hpr_free_list);
4074         smid = ioc->hi_priority_smid;
4075         for (i = 0; i < ioc->hi_priority_depth; i++, smid++) {
4076                 ioc->hpr_lookup[i].cb_idx = 0xFF;
4077                 ioc->hpr_lookup[i].smid = smid;
4078                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
4079                     &ioc->hpr_free_list);
4080         }
4081
4082         /* internal queue */
4083         INIT_LIST_HEAD(&ioc->internal_free_list);
4084         smid = ioc->internal_smid;
4085         for (i = 0; i < ioc->internal_depth; i++, smid++) {
4086                 ioc->internal_lookup[i].cb_idx = 0xFF;
4087                 ioc->internal_lookup[i].smid = smid;
4088                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
4089                     &ioc->internal_free_list);
4090         }
4091
4092         /* chain pool */
4093         INIT_LIST_HEAD(&ioc->free_chain_list);
4094         for (i = 0; i < ioc->chain_depth; i++)
4095                 list_add_tail(&ioc->chain_lookup[i].tracker_list,
4096                     &ioc->free_chain_list);
4097
4098         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4099
4100         /* initialize Reply Free Queue */
4101         for (i = 0, reply_address = (u32)ioc->reply_dma ;
4102             i < ioc->reply_free_queue_depth ; i++, reply_address +=
4103             ioc->reply_sz)
4104                 ioc->reply_free[i] = cpu_to_le32(reply_address);
4105
4106         /* initialize reply queues */
4107         if (ioc->is_driver_loading)
4108                 _base_assign_reply_queues(ioc);
4109
4110         /* initialize Reply Post Free Queue */
4111         reply_post_free = (long)ioc->reply_post_free;
4112         reply_post_free_sz = ioc->reply_post_queue_depth *
4113             sizeof(Mpi2DefaultReplyDescriptor_t);
4114         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4115                 reply_q->reply_post_host_index = 0;
4116                 reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *)
4117                     reply_post_free;
4118                 for (i = 0; i < ioc->reply_post_queue_depth; i++)
4119                         reply_q->reply_post_free[i].Words =
4120                                                         cpu_to_le64(ULLONG_MAX);
4121                 if (!_base_is_controller_msix_enabled(ioc))
4122                         goto skip_init_reply_post_free_queue;
4123                 reply_post_free += reply_post_free_sz;
4124         }
4125  skip_init_reply_post_free_queue:
4126
4127         r = _base_send_ioc_init(ioc, sleep_flag);
4128         if (r)
4129                 return r;
4130
4131         /* initialize reply free host index */
4132         ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
4133         writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
4134
4135         /* initialize reply post host index */
4136         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4137                 writel(reply_q->msix_index << MPI2_RPHI_MSIX_INDEX_SHIFT,
4138                     &ioc->chip->ReplyPostHostIndex);
4139                 if (!_base_is_controller_msix_enabled(ioc))
4140                         goto skip_init_reply_post_host_index;
4141         }
4142
4143  skip_init_reply_post_host_index:
4144
4145         _base_unmask_interrupts(ioc);
4146
4147         r = _base_event_notification(ioc, sleep_flag);
4148         if (r)
4149                 return r;
4150
4151         if (sleep_flag == CAN_SLEEP)
4152                 _base_static_config_pages(ioc);
4153
4154
4155         if (ioc->is_driver_loading) {
4156                 if (ioc->is_warpdrive && ioc->manu_pg10.OEMIdentifier
4157                     == 0x80) {
4158                         hide_flag = (u8) (ioc->manu_pg10.OEMSpecificFlags0 &
4159                             MFG_PAGE10_HIDE_SSDS_MASK);
4160                         if (hide_flag != MFG_PAGE10_HIDE_SSDS_MASK)
4161                                 ioc->mfg_pg10_hide_flag = hide_flag;
4162                 }
4163                 ioc->wait_for_discovery_to_complete =
4164                     _base_determine_wait_on_discovery(ioc);
4165                 return r; /* scan_start and scan_finished support */
4166         }
4167         r = _base_send_port_enable(ioc, sleep_flag);
4168         if (r)
4169                 return r;
4170
4171         return r;
4172 }
4173
4174 /**
4175  * mpt2sas_base_free_resources - free resources controller resources (io/irq/memap)
4176  * @ioc: per adapter object
4177  *
4178  * Return nothing.
4179  */
4180 void
4181 mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
4182 {
4183         struct pci_dev *pdev = ioc->pdev;
4184
4185         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4186             __func__));
4187
4188         _base_mask_interrupts(ioc);
4189         ioc->shost_recovery = 1;
4190         _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4191         ioc->shost_recovery = 0;
4192         _base_free_irq(ioc);
4193         _base_disable_msix(ioc);
4194         if (ioc->chip_phys)
4195                 iounmap(ioc->chip);
4196         ioc->chip_phys = 0;
4197         pci_release_selected_regions(ioc->pdev, ioc->bars);
4198         pci_disable_pcie_error_reporting(pdev);
4199         pci_disable_device(pdev);
4200         return;
4201 }
4202
4203 /**
4204  * mpt2sas_base_attach - attach controller instance
4205  * @ioc: per adapter object
4206  *
4207  * Returns 0 for success, non-zero for failure.
4208  */
4209 int
4210 mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
4211 {
4212         int r, i;
4213         int cpu_id, last_cpu_id = 0;
4214
4215         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4216             __func__));
4217
4218         /* setup cpu_msix_table */
4219         ioc->cpu_count = num_online_cpus();
4220         for_each_online_cpu(cpu_id)
4221                 last_cpu_id = cpu_id;
4222         ioc->cpu_msix_table_sz = last_cpu_id + 1;
4223         ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL);
4224         ioc->reply_queue_count = 1;
4225         if (!ioc->cpu_msix_table) {
4226                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation for "
4227                     "cpu_msix_table failed!!!\n", ioc->name));
4228                 r = -ENOMEM;
4229                 goto out_free_resources;
4230         }
4231
4232         if (ioc->is_warpdrive) {
4233                 ioc->reply_post_host_index = kcalloc(ioc->cpu_msix_table_sz,
4234                     sizeof(resource_size_t *), GFP_KERNEL);
4235                 if (!ioc->reply_post_host_index) {
4236                         dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation "
4237                                 "for cpu_msix_table failed!!!\n", ioc->name));
4238                         r = -ENOMEM;
4239                         goto out_free_resources;
4240                 }
4241         }
4242
4243         r = mpt2sas_base_map_resources(ioc);
4244         if (r)
4245                 goto out_free_resources;
4246
4247         if (ioc->is_warpdrive) {
4248                 ioc->reply_post_host_index[0] =
4249                     (resource_size_t *)&ioc->chip->ReplyPostHostIndex;
4250
4251                 for (i = 1; i < ioc->cpu_msix_table_sz; i++)
4252                         ioc->reply_post_host_index[i] = (resource_size_t *)
4253                         ((u8 *)&ioc->chip->Doorbell + (0x4000 + ((i - 1)
4254                         * 4)));
4255         }
4256
4257         pci_set_drvdata(ioc->pdev, ioc->shost);
4258         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
4259         if (r)
4260                 goto out_free_resources;
4261
4262         r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4263         if (r)
4264                 goto out_free_resources;
4265
4266         ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
4267             sizeof(Mpi2PortFactsReply_t), GFP_KERNEL);
4268         if (!ioc->pfacts) {
4269                 r = -ENOMEM;
4270                 goto out_free_resources;
4271         }
4272
4273         for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
4274                 r = _base_get_port_facts(ioc, i, CAN_SLEEP);
4275                 if (r)
4276                         goto out_free_resources;
4277         }
4278
4279         r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
4280         if (r)
4281                 goto out_free_resources;
4282
4283         init_waitqueue_head(&ioc->reset_wq);
4284
4285         /* allocate memory pd handle bitmask list */
4286         ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8);
4287         if (ioc->facts.MaxDevHandle % 8)
4288                 ioc->pd_handles_sz++;
4289         ioc->pd_handles = kzalloc(ioc->pd_handles_sz,
4290             GFP_KERNEL);
4291         if (!ioc->pd_handles) {
4292                 r = -ENOMEM;
4293                 goto out_free_resources;
4294         }
4295
4296         ioc->fwfault_debug = mpt2sas_fwfault_debug;
4297
4298         /* base internal command bits */
4299         mutex_init(&ioc->base_cmds.mutex);
4300         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4301         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
4302
4303         /* port_enable command bits */
4304         ioc->port_enable_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4305         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
4306
4307         /* transport internal command bits */
4308         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4309         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
4310         mutex_init(&ioc->transport_cmds.mutex);
4311
4312         /* scsih internal command bits */
4313         ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4314         ioc->scsih_cmds.status = MPT2_CMD_NOT_USED;
4315         mutex_init(&ioc->scsih_cmds.mutex);
4316
4317         /* task management internal command bits */
4318         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4319         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
4320         mutex_init(&ioc->tm_cmds.mutex);
4321
4322         /* config page internal command bits */
4323         ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4324         ioc->config_cmds.status = MPT2_CMD_NOT_USED;
4325         mutex_init(&ioc->config_cmds.mutex);
4326
4327         /* ctl module internal command bits */
4328         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4329         ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
4330         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
4331         mutex_init(&ioc->ctl_cmds.mutex);
4332
4333         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4334             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4335             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply ||
4336             !ioc->ctl_cmds.sense) {
4337                 r = -ENOMEM;
4338                 goto out_free_resources;
4339         }
4340
4341         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4342             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4343             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply) {
4344                 r = -ENOMEM;
4345                 goto out_free_resources;
4346         }
4347
4348         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4349                 ioc->event_masks[i] = -1;
4350
4351         /* here we enable the events we care about */
4352         _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
4353         _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
4354         _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
4355         _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4356         _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
4357         _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
4358         _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
4359         _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
4360         _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
4361         _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
4362         r = _base_make_ioc_operational(ioc, CAN_SLEEP);
4363         if (r)
4364                 goto out_free_resources;
4365
4366         if (missing_delay[0] != -1 && missing_delay[1] != -1)
4367                 _base_update_missing_delay(ioc, missing_delay[0],
4368                     missing_delay[1]);
4369
4370         return 0;
4371
4372  out_free_resources:
4373
4374         ioc->remove_host = 1;
4375         mpt2sas_base_free_resources(ioc);
4376         _base_release_memory_pools(ioc);
4377         pci_set_drvdata(ioc->pdev, NULL);
4378         kfree(ioc->cpu_msix_table);
4379         if (ioc->is_warpdrive)
4380                 kfree(ioc->reply_post_host_index);
4381         kfree(ioc->pd_handles);
4382         kfree(ioc->tm_cmds.reply);
4383         kfree(ioc->transport_cmds.reply);
4384         kfree(ioc->scsih_cmds.reply);
4385         kfree(ioc->config_cmds.reply);
4386         kfree(ioc->base_cmds.reply);
4387         kfree(ioc->port_enable_cmds.reply);
4388         kfree(ioc->ctl_cmds.reply);
4389         kfree(ioc->ctl_cmds.sense);
4390         kfree(ioc->pfacts);
4391         ioc->ctl_cmds.reply = NULL;
4392         ioc->base_cmds.reply = NULL;
4393         ioc->tm_cmds.reply = NULL;
4394         ioc->scsih_cmds.reply = NULL;
4395         ioc->transport_cmds.reply = NULL;
4396         ioc->config_cmds.reply = NULL;
4397         ioc->pfacts = NULL;
4398         return r;
4399 }
4400
4401
4402 /**
4403  * mpt2sas_base_detach - remove controller instance
4404  * @ioc: per adapter object
4405  *
4406  * Return nothing.
4407  */
4408 void
4409 mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc)
4410 {
4411
4412         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4413             __func__));
4414
4415         mpt2sas_base_stop_watchdog(ioc);
4416         mpt2sas_base_free_resources(ioc);
4417         _base_release_memory_pools(ioc);
4418         pci_set_drvdata(ioc->pdev, NULL);
4419         kfree(ioc->cpu_msix_table);
4420         if (ioc->is_warpdrive)
4421                 kfree(ioc->reply_post_host_index);
4422         kfree(ioc->pd_handles);
4423         kfree(ioc->pfacts);
4424         kfree(ioc->ctl_cmds.reply);
4425         kfree(ioc->ctl_cmds.sense);
4426         kfree(ioc->base_cmds.reply);
4427         kfree(ioc->port_enable_cmds.reply);
4428         kfree(ioc->tm_cmds.reply);
4429         kfree(ioc->transport_cmds.reply);
4430         kfree(ioc->scsih_cmds.reply);
4431         kfree(ioc->config_cmds.reply);
4432 }
4433
4434 /**
4435  * _base_reset_handler - reset callback handler (for base)
4436  * @ioc: per adapter object
4437  * @reset_phase: phase
4438  *
4439  * The handler for doing any required cleanup or initialization.
4440  *
4441  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
4442  * MPT2_IOC_DONE_RESET
4443  *
4444  * Return nothing.
4445  */
4446 static void
4447 _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
4448 {
4449         mpt2sas_scsih_reset_handler(ioc, reset_phase);
4450         mpt2sas_ctl_reset_handler(ioc, reset_phase);
4451         switch (reset_phase) {
4452         case MPT2_IOC_PRE_RESET:
4453                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4454                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
4455                 break;
4456         case MPT2_IOC_AFTER_RESET:
4457                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4458                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
4459                 if (ioc->transport_cmds.status & MPT2_CMD_PENDING) {
4460                         ioc->transport_cmds.status |= MPT2_CMD_RESET;
4461                         mpt2sas_base_free_smid(ioc, ioc->transport_cmds.smid);
4462                         complete(&ioc->transport_cmds.done);
4463                 }
4464                 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
4465                         ioc->base_cmds.status |= MPT2_CMD_RESET;
4466                         mpt2sas_base_free_smid(ioc, ioc->base_cmds.smid);
4467                         complete(&ioc->base_cmds.done);
4468                 }
4469                 if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
4470                         ioc->port_enable_failed = 1;
4471                         ioc->port_enable_cmds.status |= MPT2_CMD_RESET;
4472                         mpt2sas_base_free_smid(ioc, ioc->port_enable_cmds.smid);
4473                         if (ioc->is_driver_loading) {
4474                                 ioc->start_scan_failed =
4475                                     MPI2_IOCSTATUS_INTERNAL_ERROR;
4476                                 ioc->start_scan = 0;
4477                                 ioc->port_enable_cmds.status =
4478                                                 MPT2_CMD_NOT_USED;
4479                         } else
4480                                 complete(&ioc->port_enable_cmds.done);
4481
4482                 }
4483                 if (ioc->config_cmds.status & MPT2_CMD_PENDING) {
4484                         ioc->config_cmds.status |= MPT2_CMD_RESET;
4485                         mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid);
4486                         ioc->config_cmds.smid = USHRT_MAX;
4487                         complete(&ioc->config_cmds.done);
4488                 }
4489                 break;
4490         case MPT2_IOC_DONE_RESET:
4491                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4492                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
4493                 break;
4494         }
4495 }
4496
4497 /**
4498  * _wait_for_commands_to_complete - reset controller
4499  * @ioc: Pointer to MPT_ADAPTER structure
4500  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4501  *
4502  * This function waiting(3s) for all pending commands to complete
4503  * prior to putting controller in reset.
4504  */
4505 static void
4506 _wait_for_commands_to_complete(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4507 {
4508         u32 ioc_state;
4509         unsigned long flags;
4510         u16 i;
4511
4512         ioc->pending_io_count = 0;
4513         if (sleep_flag != CAN_SLEEP)
4514                 return;
4515
4516         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4517         if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
4518                 return;
4519
4520         /* pending command count */
4521         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4522         for (i = 0; i < ioc->scsiio_depth; i++)
4523                 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
4524                         ioc->pending_io_count++;
4525         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4526
4527         if (!ioc->pending_io_count)
4528                 return;
4529
4530         /* wait for pending commands to complete */
4531         wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ);
4532 }
4533
4534 /**
4535  * mpt2sas_base_hard_reset_handler - reset controller
4536  * @ioc: Pointer to MPT_ADAPTER structure
4537  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4538  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4539  *
4540  * Returns 0 for success, non-zero for failure.
4541  */
4542 int
4543 mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4544     enum reset_type type)
4545 {
4546         int r;
4547         unsigned long flags;
4548
4549         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
4550             __func__));
4551
4552         if (ioc->pci_error_recovery) {
4553                 printk(MPT2SAS_ERR_FMT "%s: pci error recovery reset\n",
4554                     ioc->name, __func__);
4555                 r = 0;
4556                 goto out_unlocked;
4557         }
4558
4559         if (mpt2sas_fwfault_debug)
4560                 mpt2sas_halt_firmware(ioc);
4561
4562         /* TODO - What we really should be doing is pulling
4563          * out all the code associated with NO_SLEEP; its never used.
4564          * That is legacy code from mpt fusion driver, ported over.
4565          * I will leave this BUG_ON here for now till its been resolved.
4566          */
4567         BUG_ON(sleep_flag == NO_SLEEP);
4568
4569         /* wait for an active reset in progress to complete */
4570         if (!mutex_trylock(&ioc->reset_in_progress_mutex)) {
4571                 do {
4572                         ssleep(1);
4573                 } while (ioc->shost_recovery == 1);
4574                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4575                     __func__));
4576                 return ioc->ioc_reset_in_progress_status;
4577         }
4578
4579         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4580         ioc->shost_recovery = 1;
4581         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4582
4583         _base_reset_handler(ioc, MPT2_IOC_PRE_RESET);
4584         _wait_for_commands_to_complete(ioc, sleep_flag);
4585         _base_mask_interrupts(ioc);
4586         r = _base_make_ioc_ready(ioc, sleep_flag, type);
4587         if (r)
4588                 goto out;
4589         _base_reset_handler(ioc, MPT2_IOC_AFTER_RESET);
4590
4591         /* If this hard reset is called while port enable is active, then
4592          * there is no reason to call make_ioc_operational
4593          */
4594         if (ioc->is_driver_loading && ioc->port_enable_failed) {
4595                 ioc->remove_host = 1;
4596                 r = -EFAULT;
4597                 goto out;
4598         }
4599         r = _base_make_ioc_operational(ioc, sleep_flag);
4600         if (!r)
4601                 _base_reset_handler(ioc, MPT2_IOC_DONE_RESET);
4602  out:
4603         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: %s\n",
4604             ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
4605
4606         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4607         ioc->ioc_reset_in_progress_status = r;
4608         ioc->shost_recovery = 0;
4609         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4610         mutex_unlock(&ioc->reset_in_progress_mutex);
4611
4612  out_unlocked:
4613         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4614             __func__));
4615         return r;
4616 }