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) 2007-2012  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_stop_and_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 == 0x30050000 || 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         if (unlikely(!mpi_reply)) {
 703                 printk(MPT2SAS_ERR_FMT "mpi_reply not valid at %s:%d/%s()!\n",
 704                         ioc->name, __FILE__, __LINE__, __func__);
 705                 return;
 706         }
 707         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
 708 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 709         if ((ioc_status & MPI2_IOCSTATUS_MASK) &&
 710             (ioc->logging_level & MPT_DEBUG_REPLY)) {
 711                 _base_sas_ioc_info(ioc , mpi_reply,
 712                    mpt2sas_base_get_msg_frame(ioc, smid));
 713         }
 714 #endif
 715         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
 716                 _base_sas_log_info(ioc, le32_to_cpu(mpi_reply->IOCLogInfo));
 717 }
 718
 719 /**
 720  * mpt2sas_base_done - base internal command completion routine
 721  * @ioc: per adapter object
 722  * @smid: system request message index
 723  * @msix_index: MSIX table index supplied by the OS
 724  * @reply: reply message frame(lower 32bit addr)
 725  *
 726  * Return 1 meaning mf should be freed from _base_interrupt
 727  *        0 means the mf is freed from this function.
 728  */
 729 u8
 730 mpt2sas_base_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 731     u32 reply)
 732 {
 733         MPI2DefaultReply_t *mpi_reply;
 734
 735         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 736         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
 737                 return 1;
 738
 739         if (ioc->base_cmds.status == MPT2_CMD_NOT_USED)
 740                 return 1;
 741
 742         ioc->base_cmds.status |= MPT2_CMD_COMPLETE;
 743         if (mpi_reply) {
 744                 ioc->base_cmds.status |= MPT2_CMD_REPLY_VALID;
 745                 memcpy(ioc->base_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 746         }
 747         ioc->base_cmds.status &= ~MPT2_CMD_PENDING;
 748
 749         complete(&ioc->base_cmds.done);
 750         return 1;
 751 }
 752
 753 /**
 754  * _base_async_event - main callback handler for firmware asyn events
 755  * @ioc: per adapter object
 756  * @msix_index: MSIX table index supplied by the OS
 757  * @reply: reply message frame(lower 32bit addr)
 758  *
 759  * Return 1 meaning mf should be freed from _base_interrupt
 760  *        0 means the mf is freed from this function.
 761  */
 762 static u8
 763 _base_async_event(struct MPT2SAS_ADAPTER *ioc, u8 msix_index, u32 reply)
 764 {
 765         Mpi2EventNotificationReply_t *mpi_reply;
 766         Mpi2EventAckRequest_t *ack_request;
 767         u16 smid;
 768
 769         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 770         if (!mpi_reply)
 771                 return 1;
 772         if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION)
 773                 return 1;
 774 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 775         _base_display_event_data(ioc, mpi_reply);
 776 #endif
 777         if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED))
 778                 goto out;
 779         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
 780         if (!smid) {
 781                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
 782                     ioc->name, __func__);
 783                 goto out;
 784         }
 785
 786         ack_request = mpt2sas_base_get_msg_frame(ioc, smid);
 787         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
 788         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
 789         ack_request->Event = mpi_reply->Event;
 790         ack_request->EventContext = mpi_reply->EventContext;
 791         ack_request->VF_ID = 0;  /* TODO */
 792         ack_request->VP_ID = 0;
 793         mpt2sas_base_put_smid_default(ioc, smid);
 794
 795  out:
 796
 797         /* scsih callback handler */
 798         mpt2sas_scsih_event_callback(ioc, msix_index, reply);
 799
 800         /* ctl callback handler */
 801         mpt2sas_ctl_event_callback(ioc, msix_index, reply);
 802
 803         return 1;
 804 }
 805
 806 /**
 807  * _base_get_cb_idx - obtain the callback index
 808  * @ioc: per adapter object
 809  * @smid: system request message index
 810  *
 811  * Return callback index.
 812  */
 813 static u8
 814 _base_get_cb_idx(struct MPT2SAS_ADAPTER *ioc, u16 smid)
 815 {
 816         int i;
 817         u8 cb_idx;
 818
 819         if (smid < ioc->hi_priority_smid) {
 820                 i = smid - 1;
 821                 cb_idx = ioc->scsi_lookup[i].cb_idx;
 822         } else if (smid < ioc->internal_smid) {
 823                 i = smid - ioc->hi_priority_smid;
 824                 cb_idx = ioc->hpr_lookup[i].cb_idx;
 825         } else if (smid <= ioc->hba_queue_depth) {
 826                 i = smid - ioc->internal_smid;
 827                 cb_idx = ioc->internal_lookup[i].cb_idx;
 828         } else
 829                 cb_idx = 0xFF;
 830         return cb_idx;
 831 }
 832
 833 /**
 834  * _base_mask_interrupts - disable interrupts
 835  * @ioc: per adapter object
 836  *
 837  * Disabling ResetIRQ, Reply and Doorbell Interrupts
 838  *
 839  * Return nothing.
 840  */
 841 static void
 842 _base_mask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 843 {
 844         u32 him_register;
 845
 846         ioc->mask_interrupts = 1;
 847         him_register = readl(&ioc->chip->HostInterruptMask);
 848         him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK;
 849         writel(him_register, &ioc->chip->HostInterruptMask);
 850         readl(&ioc->chip->HostInterruptMask);
 851 }
 852
 853 /**
 854  * _base_unmask_interrupts - enable interrupts
 855  * @ioc: per adapter object
 856  *
 857  * Enabling only Reply Interrupts
 858  *
 859  * Return nothing.
 860  */
 861 static void
 862 _base_unmask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 863 {
 864         u32 him_register;
 865
 866         him_register = readl(&ioc->chip->HostInterruptMask);
 867         him_register &= ~MPI2_HIM_RIM;
 868         writel(him_register, &ioc->chip->HostInterruptMask);
 869         ioc->mask_interrupts = 0;
 870 }
 871
 872 union reply_descriptor {
 873         u64 word;
 874         struct {
 875                 u32 low;
 876                 u32 high;
 877         } u;
 878 };
 879
 880 /**
 881  * _base_interrupt - MPT adapter (IOC) specific interrupt handler.
 882  * @irq: irq number (not used)
 883  * @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure
 884  * @r: pt_regs pointer (not used)
 885  *
 886  * Return IRQ_HANDLE if processed, else IRQ_NONE.
 887  */
 888 static irqreturn_t
 889 _base_interrupt(int irq, void *bus_id)
 890 {
 891         struct adapter_reply_queue *reply_q = bus_id;
 892         union reply_descriptor rd;
 893         u32 completed_cmds;
 894         u8 request_desript_type;
 895         u16 smid;
 896         u8 cb_idx;
 897         u32 reply;
 898         u8 msix_index = reply_q->msix_index;
 899         struct MPT2SAS_ADAPTER *ioc = reply_q->ioc;
 900         Mpi2ReplyDescriptorsUnion_t *rpf;
 901         u8 rc;
 902
 903         if (ioc->mask_interrupts)
 904                 return IRQ_NONE;
 905
 906         if (!atomic_add_unless(&reply_q->busy, 1, 1))
 907                 return IRQ_NONE;
 908
 909         rpf = &reply_q->reply_post_free[reply_q->reply_post_host_index];
 910         request_desript_type = rpf->Default.ReplyFlags
 911              & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 912         if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) {
 913                 atomic_dec(&reply_q->busy);
 914                 return IRQ_NONE;
 915         }
 916
 917         completed_cmds = 0;
 918         cb_idx = 0xFF;
 919         do {
 920                 rd.word = le64_to_cpu(rpf->Words);
 921                 if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX)
 922                         goto out;
 923                 reply = 0;
 924                 smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1);
 925                 if (request_desript_type ==
 926                     MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
 927                         reply = le32_to_cpu
 928                                 (rpf->AddressReply.ReplyFrameAddress);
 929                         if (reply > ioc->reply_dma_max_address ||
 930                             reply < ioc->reply_dma_min_address)
 931                                 reply = 0;
 932                 } else if (request_desript_type ==
 933                     MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER)
 934                         goto next;
 935                 else if (request_desript_type ==
 936                     MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS)
 937                         goto next;
 938                 if (smid) {
 939                         cb_idx = _base_get_cb_idx(ioc, smid);
 940                 if ((likely(cb_idx < MPT_MAX_CALLBACKS))
 941                             && (likely(mpt_callbacks[cb_idx] != NULL))) {
 942                                 rc = mpt_callbacks[cb_idx](ioc, smid,
 943                                     msix_index, reply);
 944                         if (reply)
 945                                 _base_display_reply_info(ioc, smid,
 946                                     msix_index, reply);
 947                         if (rc)
 948                                 mpt2sas_base_free_smid(ioc, smid);
 949                         }
 950                 }
 951                 if (!smid)
 952                         _base_async_event(ioc, msix_index, reply);
 953
 954                 /* reply free queue handling */
 955                 if (reply) {
 956                         ioc->reply_free_host_index =
 957                             (ioc->reply_free_host_index ==
 958                             (ioc->reply_free_queue_depth - 1)) ?
 959                             0 : ioc->reply_free_host_index + 1;
 960                         ioc->reply_free[ioc->reply_free_host_index] =
 961                             cpu_to_le32(reply);
 962                         wmb();
 963                         writel(ioc->reply_free_host_index,
 964                             &ioc->chip->ReplyFreeHostIndex);
 965                 }
 966
 967  next:
 968
 969                 rpf->Words = cpu_to_le64(ULLONG_MAX);
 970                 reply_q->reply_post_host_index =
 971                     (reply_q->reply_post_host_index ==
 972                     (ioc->reply_post_queue_depth - 1)) ? 0 :
 973                     reply_q->reply_post_host_index + 1;
 974                 request_desript_type =
 975                     reply_q->reply_post_free[reply_q->reply_post_host_index].
 976                     Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 977                 completed_cmds++;
 978                 if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
 979                         goto out;
 980                 if (!reply_q->reply_post_host_index)
 981                         rpf = reply_q->reply_post_free;
 982                 else
 983                         rpf++;
 984         } while (1);
 985
 986  out:
 987
 988         if (!completed_cmds) {
 989                 atomic_dec(&reply_q->busy);
 990                 return IRQ_NONE;
 991         }
 992         wmb();
 993         if (ioc->is_warpdrive) {
 994                 writel(reply_q->reply_post_host_index,
 995                 ioc->reply_post_host_index[msix_index]);
 996                 atomic_dec(&reply_q->busy);
 997                 return IRQ_HANDLED;
 998         }
 999         writel(reply_q->reply_post_host_index | (msix_index <<
1000             MPI2_RPHI_MSIX_INDEX_SHIFT), &ioc->chip->ReplyPostHostIndex);
1001         atomic_dec(&reply_q->busy);
1002         return IRQ_HANDLED;
1003 }
1004
1005 /**
1006  * _base_is_controller_msix_enabled - is controller support muli-reply queues
1007  * @ioc: per adapter object
1008  *
1009  */
1010 static inline int
1011 _base_is_controller_msix_enabled(struct MPT2SAS_ADAPTER *ioc)
1012 {
1013         return (ioc->facts.IOCCapabilities &
1014             MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable;
1015 }
1016
1017 /**
1018  * mpt2sas_base_flush_reply_queues - flushing the MSIX reply queues
1019  * @ioc: per adapter object
1020  * Context: ISR conext
1021  *
1022  * Called when a Task Management request has completed. We want
1023  * to flush the other reply queues so all the outstanding IO has been
1024  * completed back to OS before we process the TM completetion.
1025  *
1026  * Return nothing.
1027  */
1028 void
1029 mpt2sas_base_flush_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1030 {
1031         struct adapter_reply_queue *reply_q;
1032
1033         /* If MSIX capability is turned off
1034          * then multi-queues are not enabled
1035          */
1036         if (!_base_is_controller_msix_enabled(ioc))
1037                 return;
1038
1039         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
1040                 if (ioc->shost_recovery)
1041                         return;
1042                 /* TMs are on msix_index == 0 */
1043                 if (reply_q->msix_index == 0)
1044                         continue;
1045                 _base_interrupt(reply_q->vector, (void *)reply_q);
1046         }
1047 }
1048
1049 /**
1050  * mpt2sas_base_release_callback_handler - clear interrupt callback handler
1051  * @cb_idx: callback index
1052  *
1053  * Return nothing.
1054  */
1055 void
1056 mpt2sas_base_release_callback_handler(u8 cb_idx)
1057 {
1058         mpt_callbacks[cb_idx] = NULL;
1059 }
1060
1061 /**
1062  * mpt2sas_base_register_callback_handler - obtain index for the interrupt callback handler
1063  * @cb_func: callback function
1064  *
1065  * Returns cb_func.
1066  */
1067 u8
1068 mpt2sas_base_register_callback_handler(MPT_CALLBACK cb_func)
1069 {
1070         u8 cb_idx;
1071
1072         for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--)
1073                 if (mpt_callbacks[cb_idx] == NULL)
1074                         break;
1075
1076         mpt_callbacks[cb_idx] = cb_func;
1077         return cb_idx;
1078 }
1079
1080 /**
1081  * mpt2sas_base_initialize_callback_handler - initialize the interrupt callback handler
1082  *
1083  * Return nothing.
1084  */
1085 void
1086 mpt2sas_base_initialize_callback_handler(void)
1087 {
1088         u8 cb_idx;
1089
1090         for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++)
1091                 mpt2sas_base_release_callback_handler(cb_idx);
1092 }
1093
1094 /**
1095  * mpt2sas_base_build_zero_len_sge - build zero length sg entry
1096  * @ioc: per adapter object
1097  * @paddr: virtual address for SGE
1098  *
1099  * Create a zero length scatter gather entry to insure the IOCs hardware has
1100  * something to use if the target device goes brain dead and tries
1101  * to send data even when none is asked for.
1102  *
1103  * Return nothing.
1104  */
1105 void
1106 mpt2sas_base_build_zero_len_sge(struct MPT2SAS_ADAPTER *ioc, void *paddr)
1107 {
1108         u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT |
1109             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST |
1110             MPI2_SGE_FLAGS_SIMPLE_ELEMENT) <<
1111             MPI2_SGE_FLAGS_SHIFT);
1112         ioc->base_add_sg_single(paddr, flags_length, -1);
1113 }
1114
1115 /**
1116  * _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr.
1117  * @paddr: virtual address for SGE
1118  * @flags_length: SGE flags and data transfer length
1119  * @dma_addr: Physical address
1120  *
1121  * Return nothing.
1122  */
1123 static void
1124 _base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1125 {
1126         Mpi2SGESimple32_t *sgel = paddr;
1127
1128         flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING |
1129             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1130         sgel->FlagsLength = cpu_to_le32(flags_length);
1131         sgel->Address = cpu_to_le32(dma_addr);
1132 }
1133
1134
1135 /**
1136  * _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr.
1137  * @paddr: virtual address for SGE
1138  * @flags_length: SGE flags and data transfer length
1139  * @dma_addr: Physical address
1140  *
1141  * Return nothing.
1142  */
1143 static void
1144 _base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1145 {
1146         Mpi2SGESimple64_t *sgel = paddr;
1147
1148         flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
1149             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1150         sgel->FlagsLength = cpu_to_le32(flags_length);
1151         sgel->Address = cpu_to_le64(dma_addr);
1152 }
1153
1154 #define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10))
1155
1156 /**
1157  * _base_config_dma_addressing - set dma addressing
1158  * @ioc: per adapter object
1159  * @pdev: PCI device struct
1160  *
1161  * Returns 0 for success, non-zero for failure.
1162  */
1163 static int
1164 _base_config_dma_addressing(struct MPT2SAS_ADAPTER *ioc, struct pci_dev *pdev)
1165 {
1166         struct sysinfo s;
1167         char *desc = NULL;
1168
1169         if (sizeof(dma_addr_t) > 4) {
1170                 const uint64_t required_mask =
1171                     dma_get_required_mask(&pdev->dev);
1172                 if ((required_mask > DMA_BIT_MASK(32)) && !pci_set_dma_mask(pdev,
1173                     DMA_BIT_MASK(64)) && !pci_set_consistent_dma_mask(pdev,
1174                     DMA_BIT_MASK(64))) {
1175                         ioc->base_add_sg_single = &_base_add_sg_single_64;
1176                         ioc->sge_size = sizeof(Mpi2SGESimple64_t);
1177                         desc = "64";
1178                         goto out;
1179                 }
1180         }
1181
1182         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
1183             && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1184                 ioc->base_add_sg_single = &_base_add_sg_single_32;
1185                 ioc->sge_size = sizeof(Mpi2SGESimple32_t);
1186                 desc = "32";
1187         } else
1188                 return -ENODEV;
1189
1190  out:
1191         si_meminfo(&s);
1192         printk(MPT2SAS_INFO_FMT "%s BIT PCI BUS DMA ADDRESSING SUPPORTED, "
1193             "total mem (%ld kB)\n", ioc->name, desc, convert_to_kb(s.totalram));
1194
1195         return 0;
1196 }
1197
1198 /**
1199  * _base_check_enable_msix - checks MSIX capabable.
1200  * @ioc: per adapter object
1201  *
1202  * Check to see if card is capable of MSIX, and set number
1203  * of available msix vectors
1204  */
1205 static int
1206 _base_check_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1207 {
1208         int base;
1209         u16 message_control;
1210
1211
1212         base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
1213         if (!base) {
1214                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "msix not "
1215                     "supported\n", ioc->name));
1216                 return -EINVAL;
1217         }
1218
1219         /* get msix vector count */
1220         /* NUMA_IO not supported for older controllers */
1221         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2004 ||
1222             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 ||
1223             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_1 ||
1224             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_2 ||
1225             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_3 ||
1226             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_1 ||
1227             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_2)
1228                 ioc->msix_vector_count = 1;
1229         else {
1230                 pci_read_config_word(ioc->pdev, base + 2, &message_control);
1231                 ioc->msix_vector_count = (message_control & 0x3FF) + 1;
1232         }
1233         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "msix is supported, "
1234             "vector_count(%d)\n", ioc->name, ioc->msix_vector_count));
1235
1236         return 0;
1237 }
1238
1239 /**
1240  * _base_free_irq - free irq
1241  * @ioc: per adapter object
1242  *
1243  * Freeing respective reply_queue from the list.
1244  */
1245 static void
1246 _base_free_irq(struct MPT2SAS_ADAPTER *ioc)
1247 {
1248         struct adapter_reply_queue *reply_q, *next;
1249
1250         if (list_empty(&ioc->reply_queue_list))
1251                 return;
1252
1253         list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) {
1254                 list_del(&reply_q->list);
1255                 synchronize_irq(reply_q->vector);
1256                 free_irq(reply_q->vector, reply_q);
1257                 kfree(reply_q);
1258         }
1259 }
1260
1261 /**
1262  * _base_request_irq - request irq
1263  * @ioc: per adapter object
1264  * @index: msix index into vector table
1265  * @vector: irq vector
1266  *
1267  * Inserting respective reply_queue into the list.
1268  */
1269 static int
1270 _base_request_irq(struct MPT2SAS_ADAPTER *ioc, u8 index, u32 vector)
1271 {
1272         struct adapter_reply_queue *reply_q;
1273         int r;
1274
1275         reply_q =  kzalloc(sizeof(struct adapter_reply_queue), GFP_KERNEL);
1276         if (!reply_q) {
1277                 printk(MPT2SAS_ERR_FMT "unable to allocate memory %d!\n",
1278                     ioc->name, (int)sizeof(struct adapter_reply_queue));
1279                 return -ENOMEM;
1280         }
1281         reply_q->ioc = ioc;
1282         reply_q->msix_index = index;
1283         reply_q->vector = vector;
1284         atomic_set(&reply_q->busy, 0);
1285         if (ioc->msix_enable)
1286                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d-msix%d",
1287                     MPT2SAS_DRIVER_NAME, ioc->id, index);
1288         else
1289                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d",
1290                     MPT2SAS_DRIVER_NAME, ioc->id);
1291         r = request_irq(vector, _base_interrupt, IRQF_SHARED, reply_q->name,
1292             reply_q);
1293         if (r) {
1294                 printk(MPT2SAS_ERR_FMT "unable to allocate interrupt %d!\n",
1295                     reply_q->name, vector);
1296                 kfree(reply_q);
1297                 return -EBUSY;
1298         }
1299
1300         INIT_LIST_HEAD(&reply_q->list);
1301         list_add_tail(&reply_q->list, &ioc->reply_queue_list);
1302         return 0;
1303 }
1304
1305 /**
1306  * _base_assign_reply_queues - assigning msix index for each cpu
1307  * @ioc: per adapter object
1308  *
1309  * The enduser would need to set the affinity via /proc/irq/#/smp_affinity
1310  *
1311  * It would nice if we could call irq_set_affinity, however it is not
1312  * an exported symbol
1313  */
1314 static void
1315 _base_assign_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1316 {
1317         struct adapter_reply_queue *reply_q;
1318         int cpu_id;
1319         int cpu_grouping, loop, grouping, grouping_mod;
1320
1321         if (!_base_is_controller_msix_enabled(ioc))
1322                 return;
1323
1324         memset(ioc->cpu_msix_table, 0, ioc->cpu_msix_table_sz);
1325         /* when there are more cpus than available msix vectors,
1326          * then group cpus togeather on same irq
1327          */
1328         if (ioc->cpu_count > ioc->msix_vector_count) {
1329                 grouping = ioc->cpu_count / ioc->msix_vector_count;
1330                 grouping_mod = ioc->cpu_count % ioc->msix_vector_count;
1331                 if (grouping < 2 || (grouping == 2 && !grouping_mod))
1332                         cpu_grouping = 2;
1333                 else if (grouping < 4 || (grouping == 4 && !grouping_mod))
1334                         cpu_grouping = 4;
1335                 else if (grouping < 8 || (grouping == 8 && !grouping_mod))
1336                         cpu_grouping = 8;
1337                 else
1338                         cpu_grouping = 16;
1339         } else
1340                 cpu_grouping = 0;
1341
1342         loop = 0;
1343         reply_q = list_entry(ioc->reply_queue_list.next,
1344              struct adapter_reply_queue, list);
1345         for_each_online_cpu(cpu_id) {
1346                 if (!cpu_grouping) {
1347                         ioc->cpu_msix_table[cpu_id] = reply_q->msix_index;
1348                         reply_q = list_entry(reply_q->list.next,
1349                             struct adapter_reply_queue, list);
1350                 } else {
1351                         if (loop < cpu_grouping) {
1352                                 ioc->cpu_msix_table[cpu_id] =
1353                                         reply_q->msix_index;
1354                                 loop++;
1355                         } else {
1356                                 reply_q = list_entry(reply_q->list.next,
1357                                     struct adapter_reply_queue, list);
1358                                 ioc->cpu_msix_table[cpu_id] =
1359                                         reply_q->msix_index;
1360                                 loop = 1;
1361                         }
1362                 }
1363         }
1364 }
1365
1366 /**
1367  * _base_disable_msix - disables msix
1368  * @ioc: per adapter object
1369  *
1370  */
1371 static void
1372 _base_disable_msix(struct MPT2SAS_ADAPTER *ioc)
1373 {
1374         if (ioc->msix_enable) {
1375                 pci_disable_msix(ioc->pdev);
1376                 ioc->msix_enable = 0;
1377         }
1378 }
1379
1380 /**
1381  * _base_enable_msix - enables msix, failback to io_apic
1382  * @ioc: per adapter object
1383  *
1384  */
1385 static int
1386 _base_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1387 {
1388         struct msix_entry *entries, *a;
1389         int r;
1390         int i;
1391         u8 try_msix = 0;
1392
1393         INIT_LIST_HEAD(&ioc->reply_queue_list);
1394
1395         if (msix_disable == -1 || msix_disable == 0)
1396                 try_msix = 1;
1397
1398         if (!try_msix)
1399                 goto try_ioapic;
1400
1401         if (_base_check_enable_msix(ioc) != 0)
1402                 goto try_ioapic;
1403
1404         ioc->reply_queue_count = min_t(int, ioc->cpu_count,
1405             ioc->msix_vector_count);
1406
1407         entries = kcalloc(ioc->reply_queue_count, sizeof(struct msix_entry),
1408             GFP_KERNEL);
1409         if (!entries) {
1410                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "kcalloc "
1411                     "failed @ at %s:%d/%s() !!!\n", ioc->name, __FILE__,
1412                     __LINE__, __func__));
1413                 goto try_ioapic;
1414         }
1415
1416         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++)
1417                 a->entry = i;
1418
1419         r = pci_enable_msix(ioc->pdev, entries, ioc->reply_queue_count);
1420         if (r) {
1421                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "pci_enable_msix "
1422                     "failed (r=%d) !!!\n", ioc->name, r));
1423                 kfree(entries);
1424                 goto try_ioapic;
1425         }
1426
1427         ioc->msix_enable = 1;
1428         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++) {
1429                 r = _base_request_irq(ioc, i, a->vector);
1430                 if (r) {
1431                         _base_free_irq(ioc);
1432                         _base_disable_msix(ioc);
1433                         kfree(entries);
1434                         goto try_ioapic;
1435                 }
1436         }
1437
1438         kfree(entries);
1439         return 0;
1440
1441 /* failback to io_apic interrupt routing */
1442  try_ioapic:
1443
1444         r = _base_request_irq(ioc, 0, ioc->pdev->irq);
1445
1446         return r;
1447 }
1448
1449 /**
1450  * mpt2sas_base_map_resources - map in controller resources (io/irq/memap)
1451  * @ioc: per adapter object
1452  *
1453  * Returns 0 for success, non-zero for failure.
1454  */
1455 int
1456 mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
1457 {
1458         struct pci_dev *pdev = ioc->pdev;
1459         u32 memap_sz;
1460         u32 pio_sz;
1461         int i, r = 0;
1462         u64 pio_chip = 0;
1463         u64 chip_phys = 0;
1464         struct adapter_reply_queue *reply_q;
1465
1466         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n",
1467             ioc->name, __func__));
1468
1469         ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM);
1470         if (pci_enable_device_mem(pdev)) {
1471                 printk(MPT2SAS_WARN_FMT "pci_enable_device_mem: "
1472                     "failed\n", ioc->name);
1473                 return -ENODEV;
1474         }
1475
1476
1477         if (pci_request_selected_regions(pdev, ioc->bars,
1478             MPT2SAS_DRIVER_NAME)) {
1479                 printk(MPT2SAS_WARN_FMT "pci_request_selected_regions: "
1480                     "failed\n", ioc->name);
1481                 r = -ENODEV;
1482                 goto out_fail;
1483         }
1484
1485         /* AER (Advanced Error Reporting) hooks */
1486         pci_enable_pcie_error_reporting(pdev);
1487
1488         pci_set_master(pdev);
1489
1490         if (_base_config_dma_addressing(ioc, pdev) != 0) {
1491                 printk(MPT2SAS_WARN_FMT "no suitable DMA mask for %s\n",
1492                     ioc->name, pci_name(pdev));
1493                 r = -ENODEV;
1494                 goto out_fail;
1495         }
1496
1497         for (i = 0, memap_sz = 0, pio_sz = 0 ; i < DEVICE_COUNT_RESOURCE; i++) {
1498                 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
1499                         if (pio_sz)
1500                                 continue;
1501                         pio_chip = (u64)pci_resource_start(pdev, i);
1502                         pio_sz = pci_resource_len(pdev, i);
1503                 } else {
1504                         if (memap_sz)
1505                                 continue;
1506                         /* verify memory resource is valid before using */
1507                         if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
1508                                 ioc->chip_phys = pci_resource_start(pdev, i);
1509                                 chip_phys = (u64)ioc->chip_phys;
1510                                 memap_sz = pci_resource_len(pdev, i);
1511                                 ioc->chip = ioremap(ioc->chip_phys, memap_sz);
1512                                 if (ioc->chip == NULL) {
1513                                         printk(MPT2SAS_ERR_FMT "unable to map "
1514                                             "adapter memory!\n", ioc->name);
1515                                         r = -EINVAL;
1516                                         goto out_fail;
1517                                 }
1518                         }
1519                 }
1520         }
1521
1522         _base_mask_interrupts(ioc);
1523         r = _base_enable_msix(ioc);
1524         if (r)
1525                 goto out_fail;
1526
1527         list_for_each_entry(reply_q, &ioc->reply_queue_list, list)
1528                 printk(MPT2SAS_INFO_FMT "%s: IRQ %d\n",
1529                     reply_q->name,  ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
1530                     "IO-APIC enabled"), reply_q->vector);
1531
1532         printk(MPT2SAS_INFO_FMT "iomem(0x%016llx), mapped(0x%p), size(%d)\n",
1533             ioc->name, (unsigned long long)chip_phys, ioc->chip, memap_sz);
1534         printk(MPT2SAS_INFO_FMT "ioport(0x%016llx), size(%d)\n",
1535             ioc->name, (unsigned long long)pio_chip, pio_sz);
1536
1537         /* Save PCI configuration state for recovery from PCI AER/EEH errors */
1538         pci_save_state(pdev);
1539
1540         return 0;
1541
1542  out_fail:
1543         if (ioc->chip_phys)
1544                 iounmap(ioc->chip);
1545         ioc->chip_phys = 0;
1546         pci_release_selected_regions(ioc->pdev, ioc->bars);
1547         pci_disable_pcie_error_reporting(pdev);
1548         pci_disable_device(pdev);
1549         return r;
1550 }
1551
1552 /**
1553  * mpt2sas_base_get_msg_frame - obtain request mf pointer
1554  * @ioc: per adapter object
1555  * @smid: system request message index(smid zero is invalid)
1556  *
1557  * Returns virt pointer to message frame.
1558  */
1559 void *
1560 mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1561 {
1562         return (void *)(ioc->request + (smid * ioc->request_sz));
1563 }
1564
1565 /**
1566  * mpt2sas_base_get_sense_buffer - obtain a sense buffer assigned to a mf request
1567  * @ioc: per adapter object
1568  * @smid: system request message index
1569  *
1570  * Returns virt pointer to sense buffer.
1571  */
1572 void *
1573 mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1574 {
1575         return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1576 }
1577
1578 /**
1579  * mpt2sas_base_get_sense_buffer_dma - obtain a sense buffer assigned to a mf request
1580  * @ioc: per adapter object
1581  * @smid: system request message index
1582  *
1583  * Returns phys pointer to the low 32bit address of the sense buffer.
1584  */
1585 __le32
1586 mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1587 {
1588         return cpu_to_le32(ioc->sense_dma +
1589                         ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1590 }
1591
1592 /**
1593  * mpt2sas_base_get_reply_virt_addr - obtain reply frames virt address
1594  * @ioc: per adapter object
1595  * @phys_addr: lower 32 physical addr of the reply
1596  *
1597  * Converts 32bit lower physical addr into a virt address.
1598  */
1599 void *
1600 mpt2sas_base_get_reply_virt_addr(struct MPT2SAS_ADAPTER *ioc, u32 phys_addr)
1601 {
1602         if (!phys_addr)
1603                 return NULL;
1604         return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
1605 }
1606
1607 /**
1608  * mpt2sas_base_get_smid - obtain a free smid from internal queue
1609  * @ioc: per adapter object
1610  * @cb_idx: callback index
1611  *
1612  * Returns smid (zero is invalid)
1613  */
1614 u16
1615 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1616 {
1617         unsigned long flags;
1618         struct request_tracker *request;
1619         u16 smid;
1620
1621         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1622         if (list_empty(&ioc->internal_free_list)) {
1623                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1624                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1625                     ioc->name, __func__);
1626                 return 0;
1627         }
1628
1629         request = list_entry(ioc->internal_free_list.next,
1630             struct request_tracker, tracker_list);
1631         request->cb_idx = cb_idx;
1632         smid = request->smid;
1633         list_del(&request->tracker_list);
1634         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1635         return smid;
1636 }
1637
1638 /**
1639  * mpt2sas_base_get_smid_scsiio - obtain a free smid from scsiio queue
1640  * @ioc: per adapter object
1641  * @cb_idx: callback index
1642  * @scmd: pointer to scsi command object
1643  *
1644  * Returns smid (zero is invalid)
1645  */
1646 u16
1647 mpt2sas_base_get_smid_scsiio(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx,
1648     struct scsi_cmnd *scmd)
1649 {
1650         unsigned long flags;
1651         struct scsiio_tracker *request;
1652         u16 smid;
1653
1654         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1655         if (list_empty(&ioc->free_list)) {
1656                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1657                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1658                     ioc->name, __func__);
1659                 return 0;
1660         }
1661
1662         request = list_entry(ioc->free_list.next,
1663             struct scsiio_tracker, tracker_list);
1664         request->scmd = scmd;
1665         request->cb_idx = cb_idx;
1666         smid = request->smid;
1667         list_del(&request->tracker_list);
1668         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1669         return smid;
1670 }
1671
1672 /**
1673  * mpt2sas_base_get_smid_hpr - obtain a free smid from hi-priority queue
1674  * @ioc: per adapter object
1675  * @cb_idx: callback index
1676  *
1677  * Returns smid (zero is invalid)
1678  */
1679 u16
1680 mpt2sas_base_get_smid_hpr(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1681 {
1682         unsigned long flags;
1683         struct request_tracker *request;
1684         u16 smid;
1685
1686         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1687         if (list_empty(&ioc->hpr_free_list)) {
1688                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1689                 return 0;
1690         }
1691
1692         request = list_entry(ioc->hpr_free_list.next,
1693             struct request_tracker, tracker_list);
1694         request->cb_idx = cb_idx;
1695         smid = request->smid;
1696         list_del(&request->tracker_list);
1697         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1698         return smid;
1699 }
1700
1701
1702 /**
1703  * mpt2sas_base_free_smid - put smid back on free_list
1704  * @ioc: per adapter object
1705  * @smid: system request message index
1706  *
1707  * Return nothing.
1708  */
1709 void
1710 mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1711 {
1712         unsigned long flags;
1713         int i;
1714         struct chain_tracker *chain_req, *next;
1715
1716         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1717         if (smid < ioc->hi_priority_smid) {
1718                 /* scsiio queue */
1719                 i = smid - 1;
1720                 if (!list_empty(&ioc->scsi_lookup[i].chain_list)) {
1721                         list_for_each_entry_safe(chain_req, next,
1722                             &ioc->scsi_lookup[i].chain_list, tracker_list) {
1723                                 list_del_init(&chain_req->tracker_list);
1724                                 list_add_tail(&chain_req->tracker_list,
1725                                     &ioc->free_chain_list);
1726                         }
1727                 }
1728                 ioc->scsi_lookup[i].cb_idx = 0xFF;
1729                 ioc->scsi_lookup[i].scmd = NULL;
1730                 ioc->scsi_lookup[i].direct_io = 0;
1731                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
1732                     &ioc->free_list);
1733                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1734
1735                 /*
1736                  * See _wait_for_commands_to_complete() call with regards
1737                  * to this code.
1738                  */
1739                 if (ioc->shost_recovery && ioc->pending_io_count) {
1740                         if (ioc->pending_io_count == 1)
1741                                 wake_up(&ioc->reset_wq);
1742                         ioc->pending_io_count--;
1743                 }
1744                 return;
1745         } else if (smid < ioc->internal_smid) {
1746                 /* hi-priority */
1747                 i = smid - ioc->hi_priority_smid;
1748                 ioc->hpr_lookup[i].cb_idx = 0xFF;
1749                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
1750                     &ioc->hpr_free_list);
1751         } else if (smid <= ioc->hba_queue_depth) {
1752                 /* internal queue */
1753                 i = smid - ioc->internal_smid;
1754                 ioc->internal_lookup[i].cb_idx = 0xFF;
1755                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
1756                     &ioc->internal_free_list);
1757         }
1758         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1759 }
1760
1761 /**
1762  * _base_writeq - 64 bit write to MMIO
1763  * @ioc: per adapter object
1764  * @b: data payload
1765  * @addr: address in MMIO space
1766  * @writeq_lock: spin lock
1767  *
1768  * Glue for handling an atomic 64 bit word to MMIO. This special handling takes
1769  * care of 32 bit environment where its not quarenteed to send the entire word
1770  * in one transfer.
1771  */
1772 #ifndef writeq
1773 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1774     spinlock_t *writeq_lock)
1775 {
1776         unsigned long flags;
1777         __u64 data_out = cpu_to_le64(b);
1778
1779         spin_lock_irqsave(writeq_lock, flags);
1780         writel((u32)(data_out), addr);
1781         writel((u32)(data_out >> 32), (addr + 4));
1782         spin_unlock_irqrestore(writeq_lock, flags);
1783 }
1784 #else
1785 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1786     spinlock_t *writeq_lock)
1787 {
1788         writeq(cpu_to_le64(b), addr);
1789 }
1790 #endif
1791
1792 static inline u8
1793 _base_get_msix_index(struct MPT2SAS_ADAPTER *ioc)
1794 {
1795         return ioc->cpu_msix_table[raw_smp_processor_id()];
1796 }
1797
1798 /**
1799  * mpt2sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
1800  * @ioc: per adapter object
1801  * @smid: system request message index
1802  * @handle: device handle
1803  *
1804  * Return nothing.
1805  */
1806 void
1807 mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid, u16 handle)
1808 {
1809         Mpi2RequestDescriptorUnion_t descriptor;
1810         u64 *request = (u64 *)&descriptor;
1811
1812
1813         descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
1814         descriptor.SCSIIO.MSIxIndex =  _base_get_msix_index(ioc);
1815         descriptor.SCSIIO.SMID = cpu_to_le16(smid);
1816         descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
1817         descriptor.SCSIIO.LMID = 0;
1818         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1819             &ioc->scsi_lookup_lock);
1820 }
1821
1822
1823 /**
1824  * mpt2sas_base_put_smid_hi_priority - send Task Management request to firmware
1825  * @ioc: per adapter object
1826  * @smid: system request message index
1827  *
1828  * Return nothing.
1829  */
1830 void
1831 mpt2sas_base_put_smid_hi_priority(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1832 {
1833         Mpi2RequestDescriptorUnion_t descriptor;
1834         u64 *request = (u64 *)&descriptor;
1835
1836         descriptor.HighPriority.RequestFlags =
1837             MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
1838         descriptor.HighPriority.MSIxIndex =  0;
1839         descriptor.HighPriority.SMID = cpu_to_le16(smid);
1840         descriptor.HighPriority.LMID = 0;
1841         descriptor.HighPriority.Reserved1 = 0;
1842         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1843             &ioc->scsi_lookup_lock);
1844 }
1845
1846 /**
1847  * mpt2sas_base_put_smid_default - Default, primarily used for config pages
1848  * @ioc: per adapter object
1849  * @smid: system request message index
1850  *
1851  * Return nothing.
1852  */
1853 void
1854 mpt2sas_base_put_smid_default(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1855 {
1856         Mpi2RequestDescriptorUnion_t descriptor;
1857         u64 *request = (u64 *)&descriptor;
1858
1859         descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1860         descriptor.Default.MSIxIndex =  _base_get_msix_index(ioc);
1861         descriptor.Default.SMID = cpu_to_le16(smid);
1862         descriptor.Default.LMID = 0;
1863         descriptor.Default.DescriptorTypeDependent = 0;
1864         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1865             &ioc->scsi_lookup_lock);
1866 }
1867
1868 /**
1869  * mpt2sas_base_put_smid_target_assist - send Target Assist/Status to firmware
1870  * @ioc: per adapter object
1871  * @smid: system request message index
1872  * @io_index: value used to track the IO
1873  *
1874  * Return nothing.
1875  */
1876 void
1877 mpt2sas_base_put_smid_target_assist(struct MPT2SAS_ADAPTER *ioc, u16 smid,
1878     u16 io_index)
1879 {
1880         Mpi2RequestDescriptorUnion_t descriptor;
1881         u64 *request = (u64 *)&descriptor;
1882
1883         descriptor.SCSITarget.RequestFlags =
1884             MPI2_REQ_DESCRIPT_FLAGS_SCSI_TARGET;
1885         descriptor.SCSITarget.MSIxIndex =  _base_get_msix_index(ioc);
1886         descriptor.SCSITarget.SMID = cpu_to_le16(smid);
1887         descriptor.SCSITarget.LMID = 0;
1888         descriptor.SCSITarget.IoIndex = cpu_to_le16(io_index);
1889         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1890             &ioc->scsi_lookup_lock);
1891 }
1892
1893 /**
1894  * _base_display_dell_branding - Disply branding string
1895  * @ioc: per adapter object
1896  *
1897  * Return nothing.
1898  */
1899 static void
1900 _base_display_dell_branding(struct MPT2SAS_ADAPTER *ioc)
1901 {
1902         char dell_branding[MPT2SAS_DELL_BRANDING_SIZE];
1903
1904         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_DELL)
1905                 return;
1906
1907         memset(dell_branding, 0, MPT2SAS_DELL_BRANDING_SIZE);
1908         switch (ioc->pdev->subsystem_device) {
1909         case MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID:
1910                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING,
1911                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1912                 break;
1913         case MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID:
1914                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING,
1915                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1916                 break;
1917         case MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID:
1918                 strncpy(dell_branding,
1919                     MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING,
1920                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1921                 break;
1922         case MPT2SAS_DELL_PERC_H200_MODULAR_SSDID:
1923                 strncpy(dell_branding,
1924                     MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING,
1925                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1926                 break;
1927         case MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID:
1928                 strncpy(dell_branding,
1929                     MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING,
1930                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1931                 break;
1932         case MPT2SAS_DELL_PERC_H200_SSDID:
1933                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_BRANDING,
1934                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1935                 break;
1936         case MPT2SAS_DELL_6GBPS_SAS_SSDID:
1937                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_BRANDING,
1938                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1939                 break;
1940         default:
1941                 sprintf(dell_branding, "0x%4X", ioc->pdev->subsystem_device);
1942                 break;
1943         }
1944
1945         printk(MPT2SAS_INFO_FMT "%s: Vendor(0x%04X), Device(0x%04X),"
1946             " SSVID(0x%04X), SSDID(0x%04X)\n", ioc->name, dell_branding,
1947             ioc->pdev->vendor, ioc->pdev->device, ioc->pdev->subsystem_vendor,
1948             ioc->pdev->subsystem_device);
1949 }
1950
1951 /**
1952  * _base_display_intel_branding - Display branding string
1953  * @ioc: per adapter object
1954  *
1955  * Return nothing.
1956  */
1957 static void
1958 _base_display_intel_branding(struct MPT2SAS_ADAPTER *ioc)
1959 {
1960         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1961                 return;
1962
1963         switch (ioc->pdev->device) {
1964         case MPI2_MFGPAGE_DEVID_SAS2008:
1965                 switch (ioc->pdev->subsystem_device) {
1966                 case MPT2SAS_INTEL_RMS2LL080_SSDID:
1967                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1968                             MPT2SAS_INTEL_RMS2LL080_BRANDING);
1969                         break;
1970                 case MPT2SAS_INTEL_RMS2LL040_SSDID:
1971                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1972                             MPT2SAS_INTEL_RMS2LL040_BRANDING);
1973                         break;
1974                 case MPT2SAS_INTEL_SSD910_SSDID:
1975                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1976                             MPT2SAS_INTEL_SSD910_BRANDING);
1977                         break;
1978                 default:
1979                         break;
1980                 }
1981         case MPI2_MFGPAGE_DEVID_SAS2308_2:
1982                 switch (ioc->pdev->subsystem_device) {
1983                 case MPT2SAS_INTEL_RS25GB008_SSDID:
1984                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1985                             MPT2SAS_INTEL_RS25GB008_BRANDING);
1986                         break;
1987                 case MPT2SAS_INTEL_RMS25JB080_SSDID:
1988                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1989                             MPT2SAS_INTEL_RMS25JB080_BRANDING);
1990                         break;
1991                 case MPT2SAS_INTEL_RMS25JB040_SSDID:
1992                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1993                             MPT2SAS_INTEL_RMS25JB040_BRANDING);
1994                         break;
1995                 case MPT2SAS_INTEL_RMS25KB080_SSDID:
1996                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1997                             MPT2SAS_INTEL_RMS25KB080_BRANDING);
1998                         break;
1999                 case MPT2SAS_INTEL_RMS25KB040_SSDID:
2000                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2001                             MPT2SAS_INTEL_RMS25KB040_BRANDING);
2002                         break;
2003                 default:
2004                         break;
2005                 }
2006         default:
2007                 break;
2008         }
2009 }
2010
2011 /**
2012  * _base_display_hp_branding - Display branding string
2013  * @ioc: per adapter object
2014  *
2015  * Return nothing.
2016  */
2017 static void
2018 _base_display_hp_branding(struct MPT2SAS_ADAPTER *ioc)
2019 {
2020         if (ioc->pdev->subsystem_vendor != MPT2SAS_HP_3PAR_SSVID)
2021                 return;
2022
2023         switch (ioc->pdev->device) {
2024         case MPI2_MFGPAGE_DEVID_SAS2004:
2025                 switch (ioc->pdev->subsystem_device) {
2026                 case MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_SSDID:
2027                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2028                             MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_BRANDING);
2029                         break;
2030                 default:
2031                         break;
2032                 }
2033         case MPI2_MFGPAGE_DEVID_SAS2308_2:
2034                 switch (ioc->pdev->subsystem_device) {
2035                 case MPT2SAS_HP_2_4_INTERNAL_SSDID:
2036                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2037                             MPT2SAS_HP_2_4_INTERNAL_BRANDING);
2038                         break;
2039                 case MPT2SAS_HP_2_4_EXTERNAL_SSDID:
2040                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2041                             MPT2SAS_HP_2_4_EXTERNAL_BRANDING);
2042                         break;
2043                 case MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_SSDID:
2044                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2045                             MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_BRANDING);
2046                         break;
2047                 case MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_SSDID:
2048                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2049                             MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_BRANDING);
2050                         break;
2051                 default:
2052                         break;
2053                 }
2054         default:
2055                 break;
2056         }
2057 }
2058
2059 /**
2060  * _base_display_ioc_capabilities - Disply IOC's capabilities.
2061  * @ioc: per adapter object
2062  *
2063  * Return nothing.
2064  */
2065 static void
2066 _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc)
2067 {
2068         int i = 0;
2069         char desc[16];
2070         u32 iounit_pg1_flags;
2071         u32 bios_version;
2072
2073         bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2074         strncpy(desc, ioc->manu_pg0.ChipName, 16);
2075         printk(MPT2SAS_INFO_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "
2076            "ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
2077             ioc->name, desc,
2078            (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2079            (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2080            (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2081            ioc->facts.FWVersion.Word & 0x000000FF,
2082            ioc->pdev->revision,
2083            (bios_version & 0xFF000000) >> 24,
2084            (bios_version & 0x00FF0000) >> 16,
2085            (bios_version & 0x0000FF00) >> 8,
2086             bios_version & 0x000000FF);
2087
2088         _base_display_dell_branding(ioc);
2089         _base_display_intel_branding(ioc);
2090         _base_display_hp_branding(ioc);
2091
2092         printk(MPT2SAS_INFO_FMT "Protocol=(", ioc->name);
2093
2094         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
2095                 printk("Initiator");
2096                 i++;
2097         }
2098
2099         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
2100                 printk("%sTarget", i ? "," : "");
2101                 i++;
2102         }
2103
2104         i = 0;
2105         printk("), ");
2106         printk("Capabilities=(");
2107
2108         if (!ioc->hide_ir_msg) {
2109                 if (ioc->facts.IOCCapabilities &
2110                     MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
2111                         printk("Raid");
2112                         i++;
2113                 }
2114         }
2115
2116         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
2117                 printk("%sTLR", i ? "," : "");
2118                 i++;
2119         }
2120
2121         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
2122                 printk("%sMulticast", i ? "," : "");
2123                 i++;
2124         }
2125
2126         if (ioc->facts.IOCCapabilities &
2127             MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
2128                 printk("%sBIDI Target", i ? "," : "");
2129                 i++;
2130         }
2131
2132         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
2133                 printk("%sEEDP", i ? "," : "");
2134                 i++;
2135         }
2136
2137         if (ioc->facts.IOCCapabilities &
2138             MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
2139                 printk("%sSnapshot Buffer", i ? "," : "");
2140                 i++;
2141         }
2142
2143         if (ioc->facts.IOCCapabilities &
2144             MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
2145                 printk("%sDiag Trace Buffer", i ? "," : "");
2146                 i++;
2147         }
2148
2149         if (ioc->facts.IOCCapabilities &
2150             MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) {
2151                 printk(KERN_INFO "%sDiag Extended Buffer", i ? "," : "");
2152                 i++;
2153         }
2154
2155         if (ioc->facts.IOCCapabilities &
2156             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
2157                 printk("%sTask Set Full", i ? "," : "");
2158                 i++;
2159         }
2160
2161         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2162         if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
2163                 printk("%sNCQ", i ? "," : "");
2164                 i++;
2165         }
2166
2167         printk(")\n");
2168 }
2169
2170 /**
2171  * _base_update_missing_delay - change the missing delay timers
2172  * @ioc: per adapter object
2173  * @device_missing_delay: amount of time till device is reported missing
2174  * @io_missing_delay: interval IO is returned when there is a missing device
2175  *
2176  * Return nothing.
2177  *
2178  * Passed on the command line, this function will modify the device missing
2179  * delay, as well as the io missing delay. This should be called at driver
2180  * load time.
2181  */
2182 static void
2183 _base_update_missing_delay(struct MPT2SAS_ADAPTER *ioc,
2184         u16 device_missing_delay, u8 io_missing_delay)
2185 {
2186         u16 dmd, dmd_new, dmd_orignal;
2187         u8 io_missing_delay_original;
2188         u16 sz;
2189         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
2190         Mpi2ConfigReply_t mpi_reply;
2191         u8 num_phys = 0;
2192         u16 ioc_status;
2193
2194         mpt2sas_config_get_number_hba_phys(ioc, &num_phys);
2195         if (!num_phys)
2196                 return;
2197
2198         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (num_phys *
2199             sizeof(Mpi2SasIOUnit1PhyData_t));
2200         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
2201         if (!sas_iounit_pg1) {
2202                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2203                     ioc->name, __FILE__, __LINE__, __func__);
2204                 goto out;
2205         }
2206         if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
2207             sas_iounit_pg1, sz))) {
2208                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2209                     ioc->name, __FILE__, __LINE__, __func__);
2210                 goto out;
2211         }
2212         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
2213             MPI2_IOCSTATUS_MASK;
2214         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2215                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2216                     ioc->name, __FILE__, __LINE__, __func__);
2217                 goto out;
2218         }
2219
2220         /* device missing delay */
2221         dmd = sas_iounit_pg1->ReportDeviceMissingDelay;
2222         if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2223                 dmd = (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2224         else
2225                 dmd = dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2226         dmd_orignal = dmd;
2227         if (device_missing_delay > 0x7F) {
2228                 dmd = (device_missing_delay > 0x7F0) ? 0x7F0 :
2229                     device_missing_delay;
2230                 dmd = dmd / 16;
2231                 dmd |= MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16;
2232         } else
2233                 dmd = device_missing_delay;
2234         sas_iounit_pg1->ReportDeviceMissingDelay = dmd;
2235
2236         /* io missing delay */
2237         io_missing_delay_original = sas_iounit_pg1->IODeviceMissingDelay;
2238         sas_iounit_pg1->IODeviceMissingDelay = io_missing_delay;
2239
2240         if (!mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
2241             sz)) {
2242                 if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2243                         dmd_new = (dmd &
2244                             MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2245                 else
2246                         dmd_new =
2247                     dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2248                 printk(MPT2SAS_INFO_FMT "device_missing_delay: old(%d), "
2249                     "new(%d)\n", ioc->name, dmd_orignal, dmd_new);
2250                 printk(MPT2SAS_INFO_FMT "ioc_missing_delay: old(%d), "
2251                     "new(%d)\n", ioc->name, io_missing_delay_original,
2252                     io_missing_delay);
2253                 ioc->device_missing_delay = dmd_new;
2254                 ioc->io_missing_delay = io_missing_delay;
2255         }
2256
2257 out:
2258         kfree(sas_iounit_pg1);
2259 }
2260
2261 /**
2262  * _base_static_config_pages - static start of day config pages
2263  * @ioc: per adapter object
2264  *
2265  * Return nothing.
2266  */
2267 static void
2268 _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc)
2269 {
2270         Mpi2ConfigReply_t mpi_reply;
2271         u32 iounit_pg1_flags;
2272
2273         mpt2sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
2274         if (ioc->ir_firmware)
2275                 mpt2sas_config_get_manufacturing_pg10(ioc, &mpi_reply,
2276                     &ioc->manu_pg10);
2277         mpt2sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
2278         mpt2sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
2279         mpt2sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
2280         mpt2sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
2281         mpt2sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2282         _base_display_ioc_capabilities(ioc);
2283
2284         /*
2285          * Enable task_set_full handling in iounit_pg1 when the
2286          * facts capabilities indicate that its supported.
2287          */
2288         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2289         if ((ioc->facts.IOCCapabilities &
2290             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
2291                 iounit_pg1_flags &=
2292                     ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2293         else
2294                 iounit_pg1_flags |=
2295                     MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2296         ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
2297         mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2298
2299 }
2300
2301 /**
2302  * _base_release_memory_pools - release memory
2303  * @ioc: per adapter object
2304  *
2305  * Free memory allocated from _base_allocate_memory_pools.
2306  *
2307  * Return nothing.
2308  */
2309 static void
2310 _base_release_memory_pools(struct MPT2SAS_ADAPTER *ioc)
2311 {
2312         int i;
2313
2314         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2315             __func__));
2316
2317         if (ioc->request) {
2318                 pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
2319                     ioc->request,  ioc->request_dma);
2320                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "request_pool(0x%p)"
2321                     ": free\n", ioc->name, ioc->request));
2322                 ioc->request = NULL;
2323         }
2324
2325         if (ioc->sense) {
2326                 pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
2327                 if (ioc->sense_dma_pool)
2328                         pci_pool_destroy(ioc->sense_dma_pool);
2329                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_pool(0x%p)"
2330                     ": free\n", ioc->name, ioc->sense));
2331                 ioc->sense = NULL;
2332         }
2333
2334         if (ioc->reply) {
2335                 pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
2336                 if (ioc->reply_dma_pool)
2337                         pci_pool_destroy(ioc->reply_dma_pool);
2338                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_pool(0x%p)"
2339                      ": free\n", ioc->name, ioc->reply));
2340                 ioc->reply = NULL;
2341         }
2342
2343         if (ioc->reply_free) {
2344                 pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
2345                     ioc->reply_free_dma);
2346                 if (ioc->reply_free_dma_pool)
2347                         pci_pool_destroy(ioc->reply_free_dma_pool);
2348                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_pool"
2349                     "(0x%p): free\n", ioc->name, ioc->reply_free));
2350                 ioc->reply_free = NULL;
2351         }
2352
2353         if (ioc->reply_post_free) {
2354                 pci_pool_free(ioc->reply_post_free_dma_pool,
2355                     ioc->reply_post_free, ioc->reply_post_free_dma);
2356                 if (ioc->reply_post_free_dma_pool)
2357                         pci_pool_destroy(ioc->reply_post_free_dma_pool);
2358                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2359                     "reply_post_free_pool(0x%p): free\n", ioc->name,
2360                     ioc->reply_post_free));
2361                 ioc->reply_post_free = NULL;
2362         }
2363
2364         if (ioc->config_page) {
2365                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2366                     "config_page(0x%p): free\n", ioc->name,
2367                     ioc->config_page));
2368                 pci_free_consistent(ioc->pdev, ioc->config_page_sz,
2369                     ioc->config_page, ioc->config_page_dma);
2370         }
2371
2372         if (ioc->scsi_lookup) {
2373                 free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
2374                 ioc->scsi_lookup = NULL;
2375         }
2376         kfree(ioc->hpr_lookup);
2377         kfree(ioc->internal_lookup);
2378         if (ioc->chain_lookup) {
2379                 for (i = 0; i < ioc->chain_depth; i++) {
2380                         if (ioc->chain_lookup[i].chain_buffer)
2381                                 pci_pool_free(ioc->chain_dma_pool,
2382                                     ioc->chain_lookup[i].chain_buffer,
2383                                     ioc->chain_lookup[i].chain_buffer_dma);
2384                 }
2385                 if (ioc->chain_dma_pool)
2386                         pci_pool_destroy(ioc->chain_dma_pool);
2387                 free_pages((ulong)ioc->chain_lookup, ioc->chain_pages);
2388                 ioc->chain_lookup = NULL;
2389         }
2390 }
2391
2392
2393 /**
2394  * _base_allocate_memory_pools - allocate start of day memory pools
2395  * @ioc: per adapter object
2396  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2397  *
2398  * Returns 0 success, anything else error
2399  */
2400 static int
2401 _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc,  int sleep_flag)
2402 {
2403         struct mpt2sas_facts *facts;
2404         u16 max_sge_elements;
2405         u16 chains_needed_per_io;
2406         u32 sz, total_sz, reply_post_free_sz;
2407         u32 retry_sz;
2408         u16 max_request_credit;
2409         int i;
2410
2411         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2412             __func__));
2413
2414         retry_sz = 0;
2415         facts = &ioc->facts;
2416
2417         /* command line tunables  for max sgl entries */
2418         if (max_sgl_entries != -1) {
2419                 ioc->shost->sg_tablesize = (max_sgl_entries <
2420                     MPT2SAS_SG_DEPTH) ? max_sgl_entries :
2421                     MPT2SAS_SG_DEPTH;
2422         } else {
2423                 ioc->shost->sg_tablesize = MPT2SAS_SG_DEPTH;
2424         }
2425
2426         /* command line tunables  for max controller queue depth */
2427         if (max_queue_depth != -1 && max_queue_depth != 0) {
2428                 max_request_credit = min_t(u16, max_queue_depth +
2429                         ioc->hi_priority_depth + ioc->internal_depth,
2430                         facts->RequestCredit);
2431                 if (max_request_credit > MAX_HBA_QUEUE_DEPTH)
2432                         max_request_credit =  MAX_HBA_QUEUE_DEPTH;
2433         } else
2434                 max_request_credit = min_t(u16, facts->RequestCredit,
2435                     MAX_HBA_QUEUE_DEPTH);
2436
2437         ioc->hba_queue_depth = max_request_credit;
2438         ioc->hi_priority_depth = facts->HighPriorityCredit;
2439         ioc->internal_depth = ioc->hi_priority_depth + 5;
2440
2441         /* request frame size */
2442         ioc->request_sz = facts->IOCRequestFrameSize * 4;
2443
2444         /* reply frame size */
2445         ioc->reply_sz = facts->ReplyFrameSize * 4;
2446
2447  retry_allocation:
2448         total_sz = 0;
2449         /* calculate number of sg elements left over in the 1st frame */
2450         max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
2451             sizeof(Mpi2SGEIOUnion_t)) + ioc->sge_size);
2452         ioc->max_sges_in_main_message = max_sge_elements/ioc->sge_size;
2453
2454         /* now do the same for a chain buffer */
2455         max_sge_elements = ioc->request_sz - ioc->sge_size;
2456         ioc->max_sges_in_chain_message = max_sge_elements/ioc->sge_size;
2457
2458         ioc->chain_offset_value_for_main_message =
2459             ((sizeof(Mpi2SCSIIORequest_t) - sizeof(Mpi2SGEIOUnion_t)) +
2460              (ioc->max_sges_in_chain_message * ioc->sge_size)) / 4;
2461
2462         /*
2463          *  MPT2SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
2464          */
2465         chains_needed_per_io = ((ioc->shost->sg_tablesize -
2466            ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
2467             + 1;
2468         if (chains_needed_per_io > facts->MaxChainDepth) {
2469                 chains_needed_per_io = facts->MaxChainDepth;
2470                 ioc->shost->sg_tablesize = min_t(u16,
2471                 ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
2472                 * chains_needed_per_io), ioc->shost->sg_tablesize);
2473         }
2474         ioc->chains_needed_per_io = chains_needed_per_io;
2475
2476         /* reply free queue sizing - taking into account for 64 FW events */
2477         ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
2478
2479         /* align the reply post queue on the next 16 count boundary */
2480         if (!ioc->reply_free_queue_depth % 16)
2481                 ioc->reply_post_queue_depth = ioc->reply_free_queue_depth + 16;
2482         else
2483                 ioc->reply_post_queue_depth = ioc->reply_free_queue_depth +
2484                                 32 - (ioc->reply_free_queue_depth % 16);
2485         if (ioc->reply_post_queue_depth >
2486             facts->MaxReplyDescriptorPostQueueDepth) {
2487                 ioc->reply_post_queue_depth = min_t(u16,
2488                     (facts->MaxReplyDescriptorPostQueueDepth -
2489                     (facts->MaxReplyDescriptorPostQueueDepth % 16)),
2490                     (ioc->hba_queue_depth - (ioc->hba_queue_depth % 16)));
2491                 ioc->reply_free_queue_depth = ioc->reply_post_queue_depth - 16;
2492                 ioc->hba_queue_depth = ioc->reply_free_queue_depth - 64;
2493         }
2494
2495
2496         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "
2497             "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
2498             "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
2499             ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
2500             ioc->chains_needed_per_io));
2501
2502         ioc->scsiio_depth = ioc->hba_queue_depth -
2503             ioc->hi_priority_depth - ioc->internal_depth;
2504
2505         /* set the scsi host can_queue depth
2506          * with some internal commands that could be outstanding
2507          */
2508         ioc->shost->can_queue = ioc->scsiio_depth;
2509         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host: "
2510             "can_queue depth (%d)\n", ioc->name, ioc->shost->can_queue));
2511
2512         /* contiguous pool for request and chains, 16 byte align, one extra "
2513          * "frame for smid=0
2514          */
2515         ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth;
2516         sz = ((ioc->scsiio_depth + 1) * ioc->request_sz);
2517
2518         /* hi-priority queue */
2519         sz += (ioc->hi_priority_depth * ioc->request_sz);
2520
2521         /* internal queue */
2522         sz += (ioc->internal_depth * ioc->request_sz);
2523
2524         ioc->request_dma_sz = sz;
2525         ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
2526         if (!ioc->request) {
2527                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2528                     "failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2529                     "total(%d kB)\n", ioc->name, ioc->hba_queue_depth,
2530                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2531                 if (ioc->scsiio_depth < MPT2SAS_SAS_QUEUE_DEPTH)
2532                         goto out;
2533                 retry_sz += 64;
2534                 ioc->hba_queue_depth = max_request_credit - retry_sz;
2535                 goto retry_allocation;
2536         }
2537
2538         if (retry_sz)
2539                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2540                     "succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2541                     "total(%d kb)\n", ioc->name, ioc->hba_queue_depth,
2542                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2543
2544
2545         /* hi-priority queue */
2546         ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) *
2547             ioc->request_sz);
2548         ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) *
2549             ioc->request_sz);
2550
2551         /* internal queue */
2552         ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth *
2553             ioc->request_sz);
2554         ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth *
2555             ioc->request_sz);
2556
2557
2558         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool(0x%p): "
2559             "depth(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2560             ioc->request, ioc->hba_queue_depth, ioc->request_sz,
2561             (ioc->hba_queue_depth * ioc->request_sz)/1024));
2562         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool: dma(0x%llx)\n",
2563             ioc->name, (unsigned long long) ioc->request_dma));
2564         total_sz += sz;
2565
2566         sz = ioc->scsiio_depth * sizeof(struct scsiio_tracker);
2567         ioc->scsi_lookup_pages = get_order(sz);
2568         ioc->scsi_lookup = (struct scsiio_tracker *)__get_free_pages(
2569             GFP_KERNEL, ioc->scsi_lookup_pages);
2570         if (!ioc->scsi_lookup) {
2571                 printk(MPT2SAS_ERR_FMT "scsi_lookup: get_free_pages failed, "
2572                     "sz(%d)\n", ioc->name, (int)sz);
2573                 goto out;
2574         }
2575
2576         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsiio(0x%p): "
2577             "depth(%d)\n", ioc->name, ioc->request,
2578             ioc->scsiio_depth));
2579
2580         ioc->chain_depth = min_t(u32, ioc->chain_depth, MAX_CHAIN_DEPTH);
2581         sz = ioc->chain_depth * sizeof(struct chain_tracker);
2582         ioc->chain_pages = get_order(sz);
2583
2584         ioc->chain_lookup = (struct chain_tracker *)__get_free_pages(
2585             GFP_KERNEL, ioc->chain_pages);
2586         if (!ioc->chain_lookup) {
2587                 printk(MPT2SAS_ERR_FMT "chain_lookup: get_free_pages failed, "
2588                     "sz(%d)\n", ioc->name, (int)sz);
2589                 goto out;
2590         }
2591         ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev,
2592             ioc->request_sz, 16, 0);
2593         if (!ioc->chain_dma_pool) {
2594                 printk(MPT2SAS_ERR_FMT "chain_dma_pool: pci_pool_create "
2595                     "failed\n", ioc->name);
2596                 goto out;
2597         }
2598         for (i = 0; i < ioc->chain_depth; i++) {
2599                 ioc->chain_lookup[i].chain_buffer = pci_pool_alloc(
2600                     ioc->chain_dma_pool , GFP_KERNEL,
2601                     &ioc->chain_lookup[i].chain_buffer_dma);
2602                 if (!ioc->chain_lookup[i].chain_buffer) {
2603                         ioc->chain_depth = i;
2604                         goto chain_done;
2605                 }
2606                 total_sz += ioc->request_sz;
2607         }
2608 chain_done:
2609         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "chain pool depth"
2610             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2611             ioc->chain_depth, ioc->request_sz, ((ioc->chain_depth *
2612             ioc->request_sz))/1024));
2613
2614         /* initialize hi-priority queue smid's */
2615         ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth,
2616             sizeof(struct request_tracker), GFP_KERNEL);
2617         if (!ioc->hpr_lookup) {
2618                 printk(MPT2SAS_ERR_FMT "hpr_lookup: kcalloc failed\n",
2619                     ioc->name);
2620                 goto out;
2621         }
2622         ioc->hi_priority_smid = ioc->scsiio_depth + 1;
2623         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hi_priority(0x%p): "
2624             "depth(%d), start smid(%d)\n", ioc->name, ioc->hi_priority,
2625             ioc->hi_priority_depth, ioc->hi_priority_smid));
2626
2627         /* initialize internal queue smid's */
2628         ioc->internal_lookup = kcalloc(ioc->internal_depth,
2629             sizeof(struct request_tracker), GFP_KERNEL);
2630         if (!ioc->internal_lookup) {
2631                 printk(MPT2SAS_ERR_FMT "internal_lookup: kcalloc failed\n",
2632                     ioc->name);
2633                 goto out;
2634         }
2635         ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth;
2636         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "internal(0x%p): "
2637             "depth(%d), start smid(%d)\n", ioc->name, ioc->internal,
2638              ioc->internal_depth, ioc->internal_smid));
2639
2640         /* sense buffers, 4 byte align */
2641         sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE;
2642         ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
2643             0);
2644         if (!ioc->sense_dma_pool) {
2645                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_create failed\n",
2646                     ioc->name);
2647                 goto out;
2648         }
2649         ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
2650             &ioc->sense_dma);
2651         if (!ioc->sense) {
2652                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_alloc failed\n",
2653                     ioc->name);
2654                 goto out;
2655         }
2656         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2657             "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
2658             "(%d kB)\n", ioc->name, ioc->sense, ioc->scsiio_depth,
2659             SCSI_SENSE_BUFFERSIZE, sz/1024));
2660         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_dma(0x%llx)\n",
2661             ioc->name, (unsigned long long)ioc->sense_dma));
2662         total_sz += sz;
2663
2664         /* reply pool, 4 byte align */
2665         sz = ioc->reply_free_queue_depth * ioc->reply_sz;
2666         ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
2667             0);
2668         if (!ioc->reply_dma_pool) {
2669                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_create failed\n",
2670                     ioc->name);
2671                 goto out;
2672         }
2673         ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
2674             &ioc->reply_dma);
2675         if (!ioc->reply) {
2676                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_alloc failed\n",
2677                     ioc->name);
2678                 goto out;
2679         }
2680         ioc->reply_dma_min_address = (u32)(ioc->reply_dma);
2681         ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz;
2682         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply pool(0x%p): depth"
2683             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->reply,
2684             ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
2685         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_dma(0x%llx)\n",
2686             ioc->name, (unsigned long long)ioc->reply_dma));
2687         total_sz += sz;
2688
2689         /* reply free queue, 16 byte align */
2690         sz = ioc->reply_free_queue_depth * 4;
2691         ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
2692             ioc->pdev, sz, 16, 0);
2693         if (!ioc->reply_free_dma_pool) {
2694                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_create "
2695                     "failed\n", ioc->name);
2696                 goto out;
2697         }
2698         ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
2699             &ioc->reply_free_dma);
2700         if (!ioc->reply_free) {
2701                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_alloc "
2702                     "failed\n", ioc->name);
2703                 goto out;
2704         }
2705         memset(ioc->reply_free, 0, sz);
2706         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free pool(0x%p): "
2707             "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
2708             ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
2709         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_dma"
2710             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->reply_free_dma));
2711         total_sz += sz;
2712
2713         /* reply post queue, 16 byte align */
2714         reply_post_free_sz = ioc->reply_post_queue_depth *
2715             sizeof(Mpi2DefaultReplyDescriptor_t);
2716         if (_base_is_controller_msix_enabled(ioc))
2717                 sz = reply_post_free_sz * ioc->reply_queue_count;
2718         else
2719                 sz = reply_post_free_sz;
2720         ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
2721             ioc->pdev, sz, 16, 0);
2722         if (!ioc->reply_post_free_dma_pool) {
2723                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_create "
2724                     "failed\n", ioc->name);
2725                 goto out;
2726         }
2727         ioc->reply_post_free = pci_pool_alloc(ioc->reply_post_free_dma_pool ,
2728             GFP_KERNEL, &ioc->reply_post_free_dma);
2729         if (!ioc->reply_post_free) {
2730                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_alloc "
2731                     "failed\n", ioc->name);
2732                 goto out;
2733         }
2734         memset(ioc->reply_post_free, 0, sz);
2735         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply post free pool"
2736             "(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n",
2737             ioc->name, ioc->reply_post_free, ioc->reply_post_queue_depth, 8,
2738             sz/1024));
2739         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_post_free_dma = "
2740             "(0x%llx)\n", ioc->name, (unsigned long long)
2741             ioc->reply_post_free_dma));
2742         total_sz += sz;
2743
2744         ioc->config_page_sz = 512;
2745         ioc->config_page = pci_alloc_consistent(ioc->pdev,
2746             ioc->config_page_sz, &ioc->config_page_dma);
2747         if (!ioc->config_page) {
2748                 printk(MPT2SAS_ERR_FMT "config page: pci_pool_alloc "
2749                     "failed\n", ioc->name);
2750                 goto out;
2751         }
2752         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config page(0x%p): size"
2753             "(%d)\n", ioc->name, ioc->config_page, ioc->config_page_sz));
2754         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config_page_dma"
2755             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->config_page_dma));
2756         total_sz += ioc->config_page_sz;
2757
2758         printk(MPT2SAS_INFO_FMT "Allocated physical memory: size(%d kB)\n",
2759             ioc->name, total_sz/1024);
2760         printk(MPT2SAS_INFO_FMT "Current Controller Queue Depth(%d), "
2761             "Max Controller Queue Depth(%d)\n",
2762             ioc->name, ioc->shost->can_queue, facts->RequestCredit);
2763         printk(MPT2SAS_INFO_FMT "Scatter Gather Elements per IO(%d)\n",
2764             ioc->name, ioc->shost->sg_tablesize);
2765         return 0;
2766
2767  out:
2768         return -ENOMEM;
2769 }
2770
2771
2772 /**
2773  * mpt2sas_base_get_iocstate - Get the current state of a MPT adapter.
2774  * @ioc: Pointer to MPT_ADAPTER structure
2775  * @cooked: Request raw or cooked IOC state
2776  *
2777  * Returns all IOC Doorbell register bits if cooked==0, else just the
2778  * Doorbell bits in MPI_IOC_STATE_MASK.
2779  */
2780 u32
2781 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked)
2782 {
2783         u32 s, sc;
2784
2785         s = readl(&ioc->chip->Doorbell);
2786         sc = s & MPI2_IOC_STATE_MASK;
2787         return cooked ? sc : s;
2788 }
2789
2790 /**
2791  * _base_wait_on_iocstate - waiting on a particular ioc state
2792  * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
2793  * @timeout: timeout in second
2794  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2795  *
2796  * Returns 0 for success, non-zero for failure.
2797  */
2798 static int
2799 _base_wait_on_iocstate(struct MPT2SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
2800     int sleep_flag)
2801 {
2802         u32 count, cntdn;
2803         u32 current_state;
2804
2805         count = 0;
2806         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2807         do {
2808                 current_state = mpt2sas_base_get_iocstate(ioc, 1);
2809                 if (current_state == ioc_state)
2810                         return 0;
2811                 if (count && current_state == MPI2_IOC_STATE_FAULT)
2812                         break;
2813                 if (sleep_flag == CAN_SLEEP)
2814                         msleep(1);
2815                 else
2816                         udelay(500);
2817                 count++;
2818         } while (--cntdn);
2819
2820         return current_state;
2821 }
2822
2823 /**
2824  * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
2825  * a write to the doorbell)
2826  * @ioc: per adapter object
2827  * @timeout: timeout in second
2828  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2829  *
2830  * Returns 0 for success, non-zero for failure.
2831  *
2832  * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
2833  */
2834 static int
2835 _base_wait_for_doorbell_int(struct MPT2SAS_ADAPTER *ioc, int timeout,
2836     int sleep_flag)
2837 {
2838         u32 cntdn, count;
2839         u32 int_status;
2840
2841         count = 0;
2842         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2843         do {
2844                 int_status = readl(&ioc->chip->HostInterruptStatus);
2845                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2846                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2847                             "successful count(%d), timeout(%d)\n", ioc->name,
2848                             __func__, count, timeout));
2849                         return 0;
2850                 }
2851                 if (sleep_flag == CAN_SLEEP)
2852                         msleep(1);
2853                 else
2854                         udelay(500);
2855                 count++;
2856         } while (--cntdn);
2857
2858         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2859             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2860         return -EFAULT;
2861 }
2862
2863 /**
2864  * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
2865  * @ioc: per adapter object
2866  * @timeout: timeout in second
2867  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2868  *
2869  * Returns 0 for success, non-zero for failure.
2870  *
2871  * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
2872  * doorbell.
2873  */
2874 static int
2875 _base_wait_for_doorbell_ack(struct MPT2SAS_ADAPTER *ioc, int timeout,
2876     int sleep_flag)
2877 {
2878         u32 cntdn, count;
2879         u32 int_status;
2880         u32 doorbell;
2881
2882         count = 0;
2883         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2884         do {
2885                 int_status = readl(&ioc->chip->HostInterruptStatus);
2886                 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
2887                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2888                             "successful count(%d), timeout(%d)\n", ioc->name,
2889                             __func__, count, timeout));
2890                         return 0;
2891                 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2892                         doorbell = readl(&ioc->chip->Doorbell);
2893                         if ((doorbell & MPI2_IOC_STATE_MASK) ==
2894                             MPI2_IOC_STATE_FAULT) {
2895                                 mpt2sas_base_fault_info(ioc , doorbell);
2896                                 return -EFAULT;
2897                         }
2898                 } else if (int_status == 0xFFFFFFFF)
2899                         goto out;
2900
2901                 if (sleep_flag == CAN_SLEEP)
2902                         msleep(1);
2903                 else
2904                         udelay(500);
2905                 count++;
2906         } while (--cntdn);
2907
2908  out:
2909         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2910             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2911         return -EFAULT;
2912 }
2913
2914 /**
2915  * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
2916  * @ioc: per adapter object
2917  * @timeout: timeout in second
2918  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2919  *
2920  * Returns 0 for success, non-zero for failure.
2921  *
2922  */
2923 static int
2924 _base_wait_for_doorbell_not_used(struct MPT2SAS_ADAPTER *ioc, int timeout,
2925     int sleep_flag)
2926 {
2927         u32 cntdn, count;
2928         u32 doorbell_reg;
2929
2930         count = 0;
2931         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2932         do {
2933                 doorbell_reg = readl(&ioc->chip->Doorbell);
2934                 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
2935                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2936                             "successful count(%d), timeout(%d)\n", ioc->name,
2937                             __func__, count, timeout));
2938                         return 0;
2939                 }
2940                 if (sleep_flag == CAN_SLEEP)
2941                         msleep(1);
2942                 else
2943                         udelay(500);
2944                 count++;
2945         } while (--cntdn);
2946
2947         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2948             "doorbell_reg(%x)!\n", ioc->name, __func__, count, doorbell_reg);
2949         return -EFAULT;
2950 }
2951
2952 /**
2953  * _base_send_ioc_reset - send doorbell reset
2954  * @ioc: per adapter object
2955  * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
2956  * @timeout: timeout in second
2957  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2958  *
2959  * Returns 0 for success, non-zero for failure.
2960  */
2961 static int
2962 _base_send_ioc_reset(struct MPT2SAS_ADAPTER *ioc, u8 reset_type, int timeout,
2963     int sleep_flag)
2964 {
2965         u32 ioc_state;
2966         int r = 0;
2967
2968         if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
2969                 printk(MPT2SAS_ERR_FMT "%s: unknown reset_type\n",
2970                     ioc->name, __func__);
2971                 return -EFAULT;
2972         }
2973
2974         if (!(ioc->facts.IOCCapabilities &
2975            MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
2976                 return -EFAULT;
2977
2978         printk(MPT2SAS_INFO_FMT "sending message unit reset !!\n", ioc->name);
2979
2980         writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
2981             &ioc->chip->Doorbell);
2982         if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
2983                 r = -EFAULT;
2984                 goto out;
2985         }
2986         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
2987             timeout, sleep_flag);
2988         if (ioc_state) {
2989                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
2990                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
2991                 r = -EFAULT;
2992                 goto out;
2993         }
2994  out:
2995         printk(MPT2SAS_INFO_FMT "message unit reset: %s\n",
2996             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
2997         return r;
2998 }
2999
3000 /**
3001  * _base_handshake_req_reply_wait - send request thru doorbell interface
3002  * @ioc: per adapter object
3003  * @request_bytes: request length
3004  * @request: pointer having request payload
3005  * @reply_bytes: reply length
3006  * @reply: pointer to reply payload
3007  * @timeout: timeout in second
3008  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3009  *
3010  * Returns 0 for success, non-zero for failure.
3011  */
3012 static int
3013 _base_handshake_req_reply_wait(struct MPT2SAS_ADAPTER *ioc, int request_bytes,
3014     u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
3015 {
3016         MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
3017         int i;
3018         u8 failed;
3019         u16 dummy;
3020         __le32 *mfp;
3021
3022         /* make sure doorbell is not in use */
3023         if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
3024                 printk(MPT2SAS_ERR_FMT "doorbell is in use "
3025                     " (line=%d)\n", ioc->name, __LINE__);
3026                 return -EFAULT;
3027         }
3028
3029         /* clear pending doorbell interrupts from previous state changes */
3030         if (readl(&ioc->chip->HostInterruptStatus) &
3031             MPI2_HIS_IOC2SYS_DB_STATUS)
3032                 writel(0, &ioc->chip->HostInterruptStatus);
3033
3034         /* send message to ioc */
3035         writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
3036             ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
3037             &ioc->chip->Doorbell);
3038
3039         if ((_base_wait_for_doorbell_int(ioc, 5, NO_SLEEP))) {
3040                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3041                    "int failed (line=%d)\n", ioc->name, __LINE__);
3042                 return -EFAULT;
3043         }
3044         writel(0, &ioc->chip->HostInterruptStatus);
3045
3046         if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
3047                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3048                     "ack failed (line=%d)\n", ioc->name, __LINE__);
3049                 return -EFAULT;
3050         }
3051
3052         /* send message 32-bits at a time */
3053         for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
3054                 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
3055                 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
3056                         failed = 1;
3057         }
3058
3059         if (failed) {
3060                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3061                     "sending request failed (line=%d)\n", ioc->name, __LINE__);
3062                 return -EFAULT;
3063         }
3064
3065         /* now wait for the reply */
3066         if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
3067                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3068                    "int failed (line=%d)\n", ioc->name, __LINE__);
3069                 return -EFAULT;
3070         }
3071
3072         /* read the first two 16-bits, it gives the total length of the reply */
3073         reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3074             & MPI2_DOORBELL_DATA_MASK);
3075         writel(0, &ioc->chip->HostInterruptStatus);
3076         if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3077                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3078                    "int failed (line=%d)\n", ioc->name, __LINE__);
3079                 return -EFAULT;
3080         }
3081         reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3082             & MPI2_DOORBELL_DATA_MASK);
3083         writel(0, &ioc->chip->HostInterruptStatus);
3084
3085         for (i = 2; i < default_reply->MsgLength * 2; i++)  {
3086                 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3087                         printk(MPT2SAS_ERR_FMT "doorbell "
3088                             "handshake int failed (line=%d)\n", ioc->name,
3089                             __LINE__);
3090                         return -EFAULT;
3091                 }
3092                 if (i >=  reply_bytes/2) /* overflow case */
3093                         dummy = readl(&ioc->chip->Doorbell);
3094                 else
3095                         reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3096                             & MPI2_DOORBELL_DATA_MASK);
3097                 writel(0, &ioc->chip->HostInterruptStatus);
3098         }
3099
3100         _base_wait_for_doorbell_int(ioc, 5, sleep_flag);
3101         if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
3102                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "doorbell is in use "
3103                     " (line=%d)\n", ioc->name, __LINE__));
3104         }
3105         writel(0, &ioc->chip->HostInterruptStatus);
3106
3107         if (ioc->logging_level & MPT_DEBUG_INIT) {
3108                 mfp = (__le32 *)reply;
3109                 printk(KERN_INFO "\toffset:data\n");
3110                 for (i = 0; i < reply_bytes/4; i++)
3111                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3112                             le32_to_cpu(mfp[i]));
3113         }
3114         return 0;
3115 }
3116
3117 /**
3118  * mpt2sas_base_sas_iounit_control - send sas iounit control to FW
3119  * @ioc: per adapter object
3120  * @mpi_reply: the reply payload from FW
3121  * @mpi_request: the request payload sent to FW
3122  *
3123  * The SAS IO Unit Control Request message allows the host to perform low-level
3124  * operations, such as resets on the PHYs of the IO Unit, also allows the host
3125  * to obtain the IOC assigned device handles for a device if it has other
3126  * identifying information about the device, in addition allows the host to
3127  * remove IOC resources associated with the device.
3128  *
3129  * Returns 0 for success, non-zero for failure.
3130  */
3131 int
3132 mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
3133     Mpi2SasIoUnitControlReply_t *mpi_reply,
3134     Mpi2SasIoUnitControlRequest_t *mpi_request)
3135 {
3136         u16 smid;
3137         u32 ioc_state;
3138         unsigned long timeleft;
3139         u8 issue_reset;
3140         int rc;
3141         void *request;
3142         u16 wait_state_count;
3143
3144         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3145             __func__));
3146
3147         mutex_lock(&ioc->base_cmds.mutex);
3148
3149         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3150                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3151                     ioc->name, __func__);
3152                 rc = -EAGAIN;
3153                 goto out;
3154         }
3155
3156         wait_state_count = 0;
3157         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3158         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3159                 if (wait_state_count++ == 10) {
3160                         printk(MPT2SAS_ERR_FMT
3161                             "%s: failed due to ioc not operational\n",
3162                             ioc->name, __func__);
3163                         rc = -EFAULT;
3164                         goto out;
3165                 }
3166                 ssleep(1);
3167                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3168                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3169                     "operational state(count=%d)\n", ioc->name,
3170                     __func__, wait_state_count);
3171         }
3172
3173         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3174         if (!smid) {
3175                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3176                     ioc->name, __func__);
3177                 rc = -EAGAIN;
3178                 goto out;
3179         }
3180
3181         rc = 0;
3182         ioc->base_cmds.status = MPT2_CMD_PENDING;
3183         request = mpt2sas_base_get_msg_frame(ioc, smid);
3184         ioc->base_cmds.smid = smid;
3185         memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
3186         if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3187             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
3188                 ioc->ioc_link_reset_in_progress = 1;
3189         init_completion(&ioc->base_cmds.done);
3190         mpt2sas_base_put_smid_default(ioc, smid);
3191         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3192             msecs_to_jiffies(10000));
3193         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3194             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
3195             ioc->ioc_link_reset_in_progress)
3196                 ioc->ioc_link_reset_in_progress = 0;
3197         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3198                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3199                     ioc->name, __func__);
3200                 _debug_dump_mf(mpi_request,
3201                     sizeof(Mpi2SasIoUnitControlRequest_t)/4);
3202                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3203                         issue_reset = 1;
3204                 goto issue_host_reset;
3205         }
3206         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3207                 memcpy(mpi_reply, ioc->base_cmds.reply,
3208                     sizeof(Mpi2SasIoUnitControlReply_t));
3209         else
3210                 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
3211         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3212         goto out;
3213
3214  issue_host_reset:
3215         if (issue_reset)
3216                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3217                     FORCE_BIG_HAMMER);
3218         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3219         rc = -EFAULT;
3220  out:
3221         mutex_unlock(&ioc->base_cmds.mutex);
3222         return rc;
3223 }
3224
3225
3226 /**
3227  * mpt2sas_base_scsi_enclosure_processor - sending request to sep device
3228  * @ioc: per adapter object
3229  * @mpi_reply: the reply payload from FW
3230  * @mpi_request: the request payload sent to FW
3231  *
3232  * The SCSI Enclosure Processor request message causes the IOC to
3233  * communicate with SES devices to control LED status signals.
3234  *
3235  * Returns 0 for success, non-zero for failure.
3236  */
3237 int
3238 mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
3239     Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
3240 {
3241         u16 smid;
3242         u32 ioc_state;
3243         unsigned long timeleft;
3244         u8 issue_reset;
3245         int rc;
3246         void *request;
3247         u16 wait_state_count;
3248
3249         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3250             __func__));
3251
3252         mutex_lock(&ioc->base_cmds.mutex);
3253
3254         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3255                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3256                     ioc->name, __func__);
3257                 rc = -EAGAIN;
3258                 goto out;
3259         }
3260
3261         wait_state_count = 0;
3262         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3263         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3264                 if (wait_state_count++ == 10) {
3265                         printk(MPT2SAS_ERR_FMT
3266                             "%s: failed due to ioc not operational\n",
3267                             ioc->name, __func__);
3268                         rc = -EFAULT;
3269                         goto out;
3270                 }
3271                 ssleep(1);
3272                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3273                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3274                     "operational state(count=%d)\n", ioc->name,
3275                     __func__, wait_state_count);
3276         }
3277
3278         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3279         if (!smid) {
3280                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3281                     ioc->name, __func__);
3282                 rc = -EAGAIN;
3283                 goto out;
3284         }
3285
3286         rc = 0;
3287         ioc->base_cmds.status = MPT2_CMD_PENDING;
3288         request = mpt2sas_base_get_msg_frame(ioc, smid);
3289         ioc->base_cmds.smid = smid;
3290         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
3291         init_completion(&ioc->base_cmds.done);
3292         mpt2sas_base_put_smid_default(ioc, smid);
3293         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3294             msecs_to_jiffies(10000));
3295         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3296                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3297                     ioc->name, __func__);
3298                 _debug_dump_mf(mpi_request,
3299                     sizeof(Mpi2SepRequest_t)/4);
3300                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3301                         issue_reset = 1;
3302                 goto issue_host_reset;
3303         }
3304         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3305                 memcpy(mpi_reply, ioc->base_cmds.reply,
3306                     sizeof(Mpi2SepReply_t));
3307         else
3308                 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
3309         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3310         goto out;
3311
3312  issue_host_reset:
3313         if (issue_reset)
3314                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3315                     FORCE_BIG_HAMMER);
3316         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3317         rc = -EFAULT;
3318  out:
3319         mutex_unlock(&ioc->base_cmds.mutex);
3320         return rc;
3321 }
3322
3323 /**
3324  * _base_get_port_facts - obtain port facts reply and save in ioc
3325  * @ioc: per adapter object
3326  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3327  *
3328  * Returns 0 for success, non-zero for failure.
3329  */
3330 static int
3331 _base_get_port_facts(struct MPT2SAS_ADAPTER *ioc, int port, int sleep_flag)
3332 {
3333         Mpi2PortFactsRequest_t mpi_request;
3334         Mpi2PortFactsReply_t mpi_reply;
3335         struct mpt2sas_port_facts *pfacts;
3336         int mpi_reply_sz, mpi_request_sz, r;
3337
3338         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3339             __func__));
3340
3341         mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
3342         mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
3343         memset(&mpi_request, 0, mpi_request_sz);
3344         mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
3345         mpi_request.PortNumber = port;
3346         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3347             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3348
3349         if (r != 0) {
3350                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3351                     ioc->name, __func__, r);
3352                 return r;
3353         }
3354
3355         pfacts = &ioc->pfacts[port];
3356         memset(pfacts, 0, sizeof(struct mpt2sas_port_facts));
3357         pfacts->PortNumber = mpi_reply.PortNumber;
3358         pfacts->VP_ID = mpi_reply.VP_ID;
3359         pfacts->VF_ID = mpi_reply.VF_ID;
3360         pfacts->MaxPostedCmdBuffers =
3361             le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
3362
3363         return 0;
3364 }
3365
3366 /**
3367  * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
3368  * @ioc: per adapter object
3369  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3370  *
3371  * Returns 0 for success, non-zero for failure.
3372  */
3373 static int
3374 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3375 {
3376         Mpi2IOCFactsRequest_t mpi_request;
3377         Mpi2IOCFactsReply_t mpi_reply;
3378         struct mpt2sas_facts *facts;
3379         int mpi_reply_sz, mpi_request_sz, r;
3380
3381         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3382             __func__));
3383
3384         mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
3385         mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
3386         memset(&mpi_request, 0, mpi_request_sz);
3387         mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
3388         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3389             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3390
3391         if (r != 0) {
3392                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3393                     ioc->name, __func__, r);
3394                 return r;
3395         }
3396
3397         facts = &ioc->facts;
3398         memset(facts, 0, sizeof(struct mpt2sas_facts));
3399         facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
3400         facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
3401         facts->VP_ID = mpi_reply.VP_ID;
3402         facts->VF_ID = mpi_reply.VF_ID;
3403         facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
3404         facts->MaxChainDepth = mpi_reply.MaxChainDepth;
3405         facts->WhoInit = mpi_reply.WhoInit;
3406         facts->NumberOfPorts = mpi_reply.NumberOfPorts;
3407         facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors;
3408         facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
3409         facts->MaxReplyDescriptorPostQueueDepth =
3410             le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
3411         facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
3412         facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
3413         if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
3414                 ioc->ir_firmware = 1;
3415         facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
3416         facts->IOCRequestFrameSize =
3417             le16_to_cpu(mpi_reply.IOCRequestFrameSize);
3418         facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
3419         facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
3420         ioc->shost->max_id = -1;
3421         facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
3422         facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
3423         facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
3424         facts->HighPriorityCredit =
3425             le16_to_cpu(mpi_reply.HighPriorityCredit);
3426         facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
3427         facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
3428
3429         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hba queue depth(%d), "
3430             "max chains per io(%d)\n", ioc->name, facts->RequestCredit,
3431             facts->MaxChainDepth));
3432         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request frame size(%d), "
3433             "reply frame size(%d)\n", ioc->name,
3434             facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
3435         return 0;
3436 }
3437
3438 /**
3439  * _base_send_ioc_init - send ioc_init to firmware
3440  * @ioc: per adapter object
3441  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3442  *
3443  * Returns 0 for success, non-zero for failure.
3444  */
3445 static int
3446 _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3447 {
3448         Mpi2IOCInitRequest_t mpi_request;
3449         Mpi2IOCInitReply_t mpi_reply;
3450         int r;
3451         struct timeval current_time;
3452         u16 ioc_status;
3453
3454         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3455             __func__));
3456
3457         memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
3458         mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
3459         mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
3460         mpi_request.VF_ID = 0; /* TODO */
3461         mpi_request.VP_ID = 0;
3462         mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
3463         mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
3464
3465         if (_base_is_controller_msix_enabled(ioc))
3466                 mpi_request.HostMSIxVectors = ioc->reply_queue_count;
3467         mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
3468         mpi_request.ReplyDescriptorPostQueueDepth =
3469             cpu_to_le16(ioc->reply_post_queue_depth);
3470         mpi_request.ReplyFreeQueueDepth =
3471             cpu_to_le16(ioc->reply_free_queue_depth);
3472
3473         mpi_request.SenseBufferAddressHigh =
3474             cpu_to_le32((u64)ioc->sense_dma >> 32);
3475         mpi_request.SystemReplyAddressHigh =
3476             cpu_to_le32((u64)ioc->reply_dma >> 32);
3477         mpi_request.SystemRequestFrameBaseAddress =
3478             cpu_to_le64((u64)ioc->request_dma);
3479         mpi_request.ReplyFreeQueueAddress =
3480             cpu_to_le64((u64)ioc->reply_free_dma);
3481         mpi_request.ReplyDescriptorPostQueueAddress =
3482             cpu_to_le64((u64)ioc->reply_post_free_dma);
3483
3484
3485         /* This time stamp specifies number of milliseconds
3486          * since epoch ~ midnight January 1, 1970.
3487          */
3488         do_gettimeofday(&current_time);
3489         mpi_request.TimeStamp = cpu_to_le64((u64)current_time.tv_sec * 1000 +
3490             (current_time.tv_usec / 1000));
3491
3492         if (ioc->logging_level & MPT_DEBUG_INIT) {
3493                 __le32 *mfp;
3494                 int i;
3495
3496                 mfp = (__le32 *)&mpi_request;
3497                 printk(KERN_INFO "\toffset:data\n");
3498                 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
3499                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3500                             le32_to_cpu(mfp[i]));
3501         }
3502
3503         r = _base_handshake_req_reply_wait(ioc,
3504             sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
3505             sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
3506             sleep_flag);
3507
3508         if (r != 0) {
3509                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3510                     ioc->name, __func__, r);
3511                 return r;
3512         }
3513
3514         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
3515         if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
3516             mpi_reply.IOCLogInfo) {
3517                 printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
3518                 r = -EIO;
3519         }
3520
3521         return 0;
3522 }
3523
3524 /**
3525  * mpt2sas_port_enable_done - command completion routine for port enable
3526  * @ioc: per adapter object
3527  * @smid: system request message index
3528  * @msix_index: MSIX table index supplied by the OS
3529  * @reply: reply message frame(lower 32bit addr)
3530  *
3531  * Return 1 meaning mf should be freed from _base_interrupt
3532  *        0 means the mf is freed from this function.
3533  */
3534 u8
3535 mpt2sas_port_enable_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3536         u32 reply)
3537 {
3538         MPI2DefaultReply_t *mpi_reply;
3539         u16 ioc_status;
3540
3541         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
3542         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
3543                 return 1;
3544
3545         if (ioc->port_enable_cmds.status == MPT2_CMD_NOT_USED)
3546                 return 1;
3547
3548         ioc->port_enable_cmds.status |= MPT2_CMD_COMPLETE;
3549         if (mpi_reply) {
3550                 ioc->port_enable_cmds.status |= MPT2_CMD_REPLY_VALID;
3551                 memcpy(ioc->port_enable_cmds.reply, mpi_reply,
3552                     mpi_reply->MsgLength*4);
3553         }
3554         ioc->port_enable_cmds.status &= ~MPT2_CMD_PENDING;
3555
3556         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3557
3558         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
3559                 ioc->port_enable_failed = 1;
3560
3561         if (ioc->is_driver_loading) {
3562                 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
3563                         mpt2sas_port_enable_complete(ioc);
3564                         return 1;
3565                 } else {
3566                         ioc->start_scan_failed = ioc_status;
3567                         ioc->start_scan = 0;
3568                         return 1;
3569                 }
3570         }
3571         complete(&ioc->port_enable_cmds.done);
3572         return 1;
3573 }
3574
3575
3576 /**
3577  * _base_send_port_enable - send port_enable(discovery stuff) to firmware
3578  * @ioc: per adapter object
3579  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3580  *
3581  * Returns 0 for success, non-zero for failure.
3582  */
3583 static int
3584 _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3585 {
3586         Mpi2PortEnableRequest_t *mpi_request;
3587         Mpi2PortEnableReply_t *mpi_reply;
3588         unsigned long timeleft;
3589         int r = 0;
3590         u16 smid;
3591         u16 ioc_status;
3592
3593         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3594
3595         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3596                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3597                     ioc->name, __func__);
3598                 return -EAGAIN;
3599         }
3600
3601         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3602         if (!smid) {
3603                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3604                     ioc->name, __func__);
3605                 return -EAGAIN;
3606         }
3607
3608         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3609         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3610         ioc->port_enable_cmds.smid = smid;
3611         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3612         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3613
3614         init_completion(&ioc->port_enable_cmds.done);
3615         mpt2sas_base_put_smid_default(ioc, smid);
3616         timeleft = wait_for_completion_timeout(&ioc->port_enable_cmds.done,
3617             300*HZ);
3618         if (!(ioc->port_enable_cmds.status & MPT2_CMD_COMPLETE)) {
3619                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3620                     ioc->name, __func__);
3621                 _debug_dump_mf(mpi_request,
3622                     sizeof(Mpi2PortEnableRequest_t)/4);
3623                 if (ioc->port_enable_cmds.status & MPT2_CMD_RESET)
3624                         r = -EFAULT;
3625                 else
3626                         r = -ETIME;
3627                 goto out;
3628         }
3629         mpi_reply = ioc->port_enable_cmds.reply;
3630
3631         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3632         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
3633                 printk(MPT2SAS_ERR_FMT "%s: failed with (ioc_status=0x%08x)\n",
3634                     ioc->name, __func__, ioc_status);
3635                 r = -EFAULT;
3636                 goto out;
3637         }
3638  out:
3639         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
3640         printk(MPT2SAS_INFO_FMT "port enable: %s\n", ioc->name, ((r == 0) ?
3641             "SUCCESS" : "FAILED"));
3642         return r;
3643 }
3644
3645 /**
3646  * mpt2sas_port_enable - initiate firmware discovery (don't wait for reply)
3647  * @ioc: per adapter object
3648  *
3649  * Returns 0 for success, non-zero for failure.
3650  */
3651 int
3652 mpt2sas_port_enable(struct MPT2SAS_ADAPTER *ioc)
3653 {
3654         Mpi2PortEnableRequest_t *mpi_request;
3655         u16 smid;
3656
3657         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3658
3659         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3660                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3661                     ioc->name, __func__);
3662                 return -EAGAIN;
3663         }
3664
3665         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3666         if (!smid) {
3667                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3668                     ioc->name, __func__);
3669                 return -EAGAIN;
3670         }
3671
3672         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3673         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3674         ioc->port_enable_cmds.smid = smid;
3675         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3676         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3677
3678         mpt2sas_base_put_smid_default(ioc, smid);
3679         return 0;
3680 }
3681
3682 /**
3683  * _base_determine_wait_on_discovery - desposition
3684  * @ioc: per adapter object
3685  *
3686  * Decide whether to wait on discovery to complete. Used to either
3687  * locate boot device, or report volumes ahead of physical devices.
3688  *
3689  * Returns 1 for wait, 0 for don't wait
3690  */
3691 static int
3692 _base_determine_wait_on_discovery(struct MPT2SAS_ADAPTER *ioc)
3693 {
3694         /* We wait for discovery to complete if IR firmware is loaded.
3695          * The sas topology events arrive before PD events, so we need time to
3696          * turn on the bit in ioc->pd_handles to indicate PD
3697          * Also, it maybe required to report Volumes ahead of physical
3698          * devices when MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING is set.
3699          */
3700         if (ioc->ir_firmware)
3701                 return 1;
3702
3703         /* if no Bios, then we don't need to wait */
3704         if (!ioc->bios_pg3.BiosVersion)
3705                 return 0;
3706
3707         /* Bios is present, then we drop down here.
3708          *
3709          * If there any entries in the Bios Page 2, then we wait
3710          * for discovery to complete.
3711          */
3712
3713         /* Current Boot Device */
3714         if ((ioc->bios_pg2.CurrentBootDeviceForm &
3715             MPI2_BIOSPAGE2_FORM_MASK) ==
3716             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3717         /* Request Boot Device */
3718            (ioc->bios_pg2.ReqBootDeviceForm &
3719             MPI2_BIOSPAGE2_FORM_MASK) ==
3720             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3721         /* Alternate Request Boot Device */
3722            (ioc->bios_pg2.ReqAltBootDeviceForm &
3723             MPI2_BIOSPAGE2_FORM_MASK) ==
3724             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED)
3725                 return 0;
3726
3727         return 1;
3728 }
3729
3730
3731 /**
3732  * _base_unmask_events - turn on notification for this event
3733  * @ioc: per adapter object
3734  * @event: firmware event
3735  *
3736  * The mask is stored in ioc->event_masks.
3737  */
3738 static void
3739 _base_unmask_events(struct MPT2SAS_ADAPTER *ioc, u16 event)
3740 {
3741         u32 desired_event;
3742
3743         if (event >= 128)
3744                 return;
3745
3746         desired_event = (1 << (event % 32));
3747
3748         if (event < 32)
3749                 ioc->event_masks[0] &= ~desired_event;
3750         else if (event < 64)
3751                 ioc->event_masks[1] &= ~desired_event;
3752         else if (event < 96)
3753                 ioc->event_masks[2] &= ~desired_event;
3754         else if (event < 128)
3755                 ioc->event_masks[3] &= ~desired_event;
3756 }
3757
3758 /**
3759  * _base_event_notification - send event notification
3760  * @ioc: per adapter object
3761  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3762  *
3763  * Returns 0 for success, non-zero for failure.
3764  */
3765 static int
3766 _base_event_notification(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3767 {
3768         Mpi2EventNotificationRequest_t *mpi_request;
3769         unsigned long timeleft;
3770         u16 smid;
3771         int r = 0;
3772         int i;
3773
3774         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3775             __func__));
3776
3777         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
3778                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3779                     ioc->name, __func__);
3780                 return -EAGAIN;
3781         }
3782
3783         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3784         if (!smid) {
3785                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3786                     ioc->name, __func__);
3787                 return -EAGAIN;
3788         }
3789         ioc->base_cmds.status = MPT2_CMD_PENDING;
3790         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3791         ioc->base_cmds.smid = smid;
3792         memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
3793         mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
3794         mpi_request->VF_ID = 0; /* TODO */
3795         mpi_request->VP_ID = 0;
3796         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
3797                 mpi_request->EventMasks[i] =
3798                     cpu_to_le32(ioc->event_masks[i]);
3799         init_completion(&ioc->base_cmds.done);
3800         mpt2sas_base_put_smid_default(ioc, smid);
3801         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
3802         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3803                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3804                     ioc->name, __func__);
3805                 _debug_dump_mf(mpi_request,
3806                     sizeof(Mpi2EventNotificationRequest_t)/4);
3807                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
3808                         r = -EFAULT;
3809                 else
3810                         r = -ETIME;
3811         } else
3812                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: complete\n",
3813                     ioc->name, __func__));
3814         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3815         return r;
3816 }
3817
3818 /**
3819  * mpt2sas_base_validate_event_type - validating event types
3820  * @ioc: per adapter object
3821  * @event: firmware event
3822  *
3823  * This will turn on firmware event notification when application
3824  * ask for that event. We don't mask events that are already enabled.
3825  */
3826 void
3827 mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type)
3828 {
3829         int i, j;
3830         u32 event_mask, desired_event;
3831         u8 send_update_to_fw;
3832
3833         for (i = 0, send_update_to_fw = 0; i <
3834             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
3835                 event_mask = ~event_type[i];
3836                 desired_event = 1;
3837                 for (j = 0; j < 32; j++) {
3838                         if (!(event_mask & desired_event) &&
3839                             (ioc->event_masks[i] & desired_event)) {
3840                                 ioc->event_masks[i] &= ~desired_event;
3841                                 send_update_to_fw = 1;
3842                         }
3843                         desired_event = (desired_event << 1);
3844                 }
3845         }
3846
3847         if (!send_update_to_fw)
3848                 return;
3849
3850         mutex_lock(&ioc->base_cmds.mutex);
3851         _base_event_notification(ioc, CAN_SLEEP);
3852         mutex_unlock(&ioc->base_cmds.mutex);
3853 }
3854
3855 /**
3856  * _base_diag_reset - the "big hammer" start of day reset
3857  * @ioc: per adapter object
3858  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3859  *
3860  * Returns 0 for success, non-zero for failure.
3861  */
3862 static int
3863 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3864 {
3865         u32 host_diagnostic;
3866         u32 ioc_state;
3867         u32 count;
3868         u32 hcb_size;
3869
3870         printk(MPT2SAS_INFO_FMT "sending diag reset !!\n", ioc->name);
3871         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "clear interrupts\n",
3872             ioc->name));
3873
3874         count = 0;
3875         do {
3876                 /* Write magic sequence to WriteSequence register
3877                  * Loop until in diagnostic mode
3878                  */
3879                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "write magic "
3880                     "sequence\n", ioc->name));
3881                 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3882                 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
3883                 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
3884                 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
3885                 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
3886                 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
3887                 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
3888
3889                 /* wait 100 msec */
3890                 if (sleep_flag == CAN_SLEEP)
3891                         msleep(100);
3892                 else
3893                         mdelay(100);
3894
3895                 if (count++ > 20)
3896                         goto out;
3897
3898                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3899                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "wrote magic "
3900                     "sequence: count(%d), host_diagnostic(0x%08x)\n",
3901                     ioc->name, count, host_diagnostic));
3902
3903         } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
3904
3905         hcb_size = readl(&ioc->chip->HCBSize);
3906
3907         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "diag reset: issued\n",
3908             ioc->name));
3909         writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
3910              &ioc->chip->HostDiagnostic);
3911
3912         /* don't access any registers for 50 milliseconds */
3913         msleep(50);
3914
3915         /* 300 second max wait */
3916         for (count = 0; count < 3000000 ; count++) {
3917
3918                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3919
3920                 if (host_diagnostic == 0xFFFFFFFF)
3921                         goto out;
3922                 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
3923                         break;
3924
3925                 /* wait 100 msec */
3926                 if (sleep_flag == CAN_SLEEP)
3927                         msleep(1);
3928                 else
3929                         mdelay(1);
3930         }
3931
3932         if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
3933
3934                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter "
3935                     "assuming the HCB Address points to good F/W\n",
3936                     ioc->name));
3937                 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
3938                 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
3939                 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
3940
3941                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT
3942                     "re-enable the HCDW\n", ioc->name));
3943                 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
3944                     &ioc->chip->HCBSize);
3945         }
3946
3947         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter\n",
3948             ioc->name));
3949         writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
3950             &ioc->chip->HostDiagnostic);
3951
3952         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "disable writes to the "
3953             "diagnostic register\n", ioc->name));
3954         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3955
3956         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "Wait for FW to go to the "
3957             "READY state\n", ioc->name));
3958         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
3959             sleep_flag);
3960         if (ioc_state) {
3961                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3962                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3963                 goto out;
3964         }
3965
3966         printk(MPT2SAS_INFO_FMT "diag reset: SUCCESS\n", ioc->name);
3967         return 0;
3968
3969  out:
3970         printk(MPT2SAS_ERR_FMT "diag reset: FAILED\n", ioc->name);
3971         return -EFAULT;
3972 }
3973
3974 /**
3975  * _base_make_ioc_ready - put controller in READY state
3976  * @ioc: per adapter object
3977  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3978  * @type: FORCE_BIG_HAMMER or SOFT_RESET
3979  *
3980  * Returns 0 for success, non-zero for failure.
3981  */
3982 static int
3983 _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
3984     enum reset_type type)
3985 {
3986         u32 ioc_state;
3987         int rc;
3988
3989         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3990             __func__));
3991
3992         if (ioc->pci_error_recovery)
3993                 return 0;
3994
3995         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
3996         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: ioc_state(0x%08x)\n",
3997             ioc->name, __func__, ioc_state));
3998
3999         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
4000                 return 0;
4001
4002         if (ioc_state & MPI2_DOORBELL_USED) {
4003                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "unexpected doorbell "
4004                     "active!\n", ioc->name));
4005                 goto issue_diag_reset;
4006         }
4007
4008         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
4009                 mpt2sas_base_fault_info(ioc, ioc_state &
4010                     MPI2_DOORBELL_DATA_MASK);
4011                 goto issue_diag_reset;
4012         }
4013
4014         if (type == FORCE_BIG_HAMMER)
4015                 goto issue_diag_reset;
4016
4017         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
4018                 if (!(_base_send_ioc_reset(ioc,
4019                     MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP))) {
4020                         ioc->ioc_reset_count++;
4021                         return 0;
4022         }
4023
4024  issue_diag_reset:
4025         rc = _base_diag_reset(ioc, CAN_SLEEP);
4026         ioc->ioc_reset_count++;
4027         return rc;
4028 }
4029
4030 /**
4031  * _base_make_ioc_operational - put controller in OPERATIONAL state
4032  * @ioc: per adapter object
4033  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4034  *
4035  * Returns 0 for success, non-zero for failure.
4036  */
4037 static int
4038 _base_make_ioc_operational(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4039 {
4040         int r, i;
4041         unsigned long   flags;
4042         u32 reply_address;
4043         u16 smid;
4044         struct _tr_list *delayed_tr, *delayed_tr_next;
4045         u8 hide_flag;
4046         struct adapter_reply_queue *reply_q;
4047         long reply_post_free;
4048         u32 reply_post_free_sz;
4049
4050         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4051             __func__));
4052
4053         /* clean the delayed target reset list */
4054         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4055             &ioc->delayed_tr_list, list) {
4056                 list_del(&delayed_tr->list);
4057                 kfree(delayed_tr);
4058         }
4059
4060         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4061             &ioc->delayed_tr_volume_list, list) {
4062                 list_del(&delayed_tr->list);
4063                 kfree(delayed_tr);
4064         }
4065
4066         /* initialize the scsi lookup free list */
4067         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4068         INIT_LIST_HEAD(&ioc->free_list);
4069         smid = 1;
4070         for (i = 0; i < ioc->scsiio_depth; i++, smid++) {
4071                 INIT_LIST_HEAD(&ioc->scsi_lookup[i].chain_list);
4072                 ioc->scsi_lookup[i].cb_idx = 0xFF;
4073                 ioc->scsi_lookup[i].smid = smid;
4074                 ioc->scsi_lookup[i].scmd = NULL;
4075                 ioc->scsi_lookup[i].direct_io = 0;
4076                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
4077                     &ioc->free_list);
4078         }
4079
4080         /* hi-priority queue */
4081         INIT_LIST_HEAD(&ioc->hpr_free_list);
4082         smid = ioc->hi_priority_smid;
4083         for (i = 0; i < ioc->hi_priority_depth; i++, smid++) {
4084                 ioc->hpr_lookup[i].cb_idx = 0xFF;
4085                 ioc->hpr_lookup[i].smid = smid;
4086                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
4087                     &ioc->hpr_free_list);
4088         }
4089
4090         /* internal queue */
4091         INIT_LIST_HEAD(&ioc->internal_free_list);
4092         smid = ioc->internal_smid;
4093         for (i = 0; i < ioc->internal_depth; i++, smid++) {
4094                 ioc->internal_lookup[i].cb_idx = 0xFF;
4095                 ioc->internal_lookup[i].smid = smid;
4096                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
4097                     &ioc->internal_free_list);
4098         }
4099
4100         /* chain pool */
4101         INIT_LIST_HEAD(&ioc->free_chain_list);
4102         for (i = 0; i < ioc->chain_depth; i++)
4103                 list_add_tail(&ioc->chain_lookup[i].tracker_list,
4104                     &ioc->free_chain_list);
4105
4106         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4107
4108         /* initialize Reply Free Queue */
4109         for (i = 0, reply_address = (u32)ioc->reply_dma ;
4110             i < ioc->reply_free_queue_depth ; i++, reply_address +=
4111             ioc->reply_sz)
4112                 ioc->reply_free[i] = cpu_to_le32(reply_address);
4113
4114         /* initialize reply queues */
4115         if (ioc->is_driver_loading)
4116                 _base_assign_reply_queues(ioc);
4117
4118         /* initialize Reply Post Free Queue */
4119         reply_post_free = (long)ioc->reply_post_free;
4120         reply_post_free_sz = ioc->reply_post_queue_depth *
4121             sizeof(Mpi2DefaultReplyDescriptor_t);
4122         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4123                 reply_q->reply_post_host_index = 0;
4124                 reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *)
4125                     reply_post_free;
4126                 for (i = 0; i < ioc->reply_post_queue_depth; i++)
4127                         reply_q->reply_post_free[i].Words =
4128                                                         cpu_to_le64(ULLONG_MAX);
4129                 if (!_base_is_controller_msix_enabled(ioc))
4130                         goto skip_init_reply_post_free_queue;
4131                 reply_post_free += reply_post_free_sz;
4132         }
4133  skip_init_reply_post_free_queue:
4134
4135         r = _base_send_ioc_init(ioc, sleep_flag);
4136         if (r)
4137                 return r;
4138
4139         /* initialize reply free host index */
4140         ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
4141         writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
4142
4143         /* initialize reply post host index */
4144         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4145                 writel(reply_q->msix_index << MPI2_RPHI_MSIX_INDEX_SHIFT,
4146                     &ioc->chip->ReplyPostHostIndex);
4147                 if (!_base_is_controller_msix_enabled(ioc))
4148                         goto skip_init_reply_post_host_index;
4149         }
4150
4151  skip_init_reply_post_host_index:
4152
4153         _base_unmask_interrupts(ioc);
4154
4155         r = _base_event_notification(ioc, sleep_flag);
4156         if (r)
4157                 return r;
4158
4159         if (sleep_flag == CAN_SLEEP)
4160                 _base_static_config_pages(ioc);
4161
4162
4163         if (ioc->is_driver_loading) {
4164                 if (ioc->is_warpdrive && ioc->manu_pg10.OEMIdentifier
4165                     == 0x80) {
4166                         hide_flag = (u8) (
4167                             le32_to_cpu(ioc->manu_pg10.OEMSpecificFlags0) &
4168                             MFG_PAGE10_HIDE_SSDS_MASK);
4169                         if (hide_flag != MFG_PAGE10_HIDE_SSDS_MASK)
4170                                 ioc->mfg_pg10_hide_flag = hide_flag;
4171                 }
4172                 ioc->wait_for_discovery_to_complete =
4173                     _base_determine_wait_on_discovery(ioc);
4174                 return r; /* scan_start and scan_finished support */
4175         }
4176         r = _base_send_port_enable(ioc, sleep_flag);
4177         if (r)
4178                 return r;
4179
4180         return r;
4181 }
4182
4183 /**
4184  * mpt2sas_base_free_resources - free resources controller resources (io/irq/memap)
4185  * @ioc: per adapter object
4186  *
4187  * Return nothing.
4188  */
4189 void
4190 mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
4191 {
4192         struct pci_dev *pdev = ioc->pdev;
4193
4194         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4195             __func__));
4196
4197         _base_mask_interrupts(ioc);
4198         ioc->shost_recovery = 1;
4199         _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4200         ioc->shost_recovery = 0;
4201         _base_free_irq(ioc);
4202         _base_disable_msix(ioc);
4203         if (ioc->chip_phys)
4204                 iounmap(ioc->chip);
4205         ioc->chip_phys = 0;
4206         pci_release_selected_regions(ioc->pdev, ioc->bars);
4207         pci_disable_pcie_error_reporting(pdev);
4208         pci_disable_device(pdev);
4209         return;
4210 }
4211
4212 /**
4213  * mpt2sas_base_attach - attach controller instance
4214  * @ioc: per adapter object
4215  *
4216  * Returns 0 for success, non-zero for failure.
4217  */
4218 int
4219 mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
4220 {
4221         int r, i;
4222         int cpu_id, last_cpu_id = 0;
4223
4224         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4225             __func__));
4226
4227         /* setup cpu_msix_table */
4228         ioc->cpu_count = num_online_cpus();
4229         for_each_online_cpu(cpu_id)
4230                 last_cpu_id = cpu_id;
4231         ioc->cpu_msix_table_sz = last_cpu_id + 1;
4232         ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL);
4233         ioc->reply_queue_count = 1;
4234         if (!ioc->cpu_msix_table) {
4235                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation for "
4236                     "cpu_msix_table failed!!!\n", ioc->name));
4237                 r = -ENOMEM;
4238                 goto out_free_resources;
4239         }
4240
4241         if (ioc->is_warpdrive) {
4242                 ioc->reply_post_host_index = kcalloc(ioc->cpu_msix_table_sz,
4243                     sizeof(resource_size_t *), GFP_KERNEL);
4244                 if (!ioc->reply_post_host_index) {
4245                         dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation "
4246                                 "for cpu_msix_table failed!!!\n", ioc->name));
4247                         r = -ENOMEM;
4248                         goto out_free_resources;
4249                 }
4250         }
4251
4252         r = mpt2sas_base_map_resources(ioc);
4253         if (r)
4254                 goto out_free_resources;
4255
4256         if (ioc->is_warpdrive) {
4257                 ioc->reply_post_host_index[0] =
4258                     (resource_size_t *)&ioc->chip->ReplyPostHostIndex;
4259
4260                 for (i = 1; i < ioc->cpu_msix_table_sz; i++)
4261                         ioc->reply_post_host_index[i] = (resource_size_t *)
4262                         ((u8 *)&ioc->chip->Doorbell + (0x4000 + ((i - 1)
4263                         * 4)));
4264         }
4265
4266         pci_set_drvdata(ioc->pdev, ioc->shost);
4267         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
4268         if (r)
4269                 goto out_free_resources;
4270
4271         r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4272         if (r)
4273                 goto out_free_resources;
4274
4275         ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
4276             sizeof(struct mpt2sas_port_facts), GFP_KERNEL);
4277         if (!ioc->pfacts) {
4278                 r = -ENOMEM;
4279                 goto out_free_resources;
4280         }
4281
4282         for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
4283                 r = _base_get_port_facts(ioc, i, CAN_SLEEP);
4284                 if (r)
4285                         goto out_free_resources;
4286         }
4287
4288         r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
4289         if (r)
4290                 goto out_free_resources;
4291
4292         init_waitqueue_head(&ioc->reset_wq);
4293         /* allocate memory pd handle bitmask list */
4294         ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8);
4295         if (ioc->facts.MaxDevHandle % 8)
4296                 ioc->pd_handles_sz++;
4297         ioc->pd_handles = kzalloc(ioc->pd_handles_sz,
4298             GFP_KERNEL);
4299         if (!ioc->pd_handles) {
4300                 r = -ENOMEM;
4301                 goto out_free_resources;
4302         }
4303         ioc->blocking_handles = kzalloc(ioc->pd_handles_sz,
4304             GFP_KERNEL);
4305         if (!ioc->blocking_handles) {
4306                 r = -ENOMEM;
4307                 goto out_free_resources;
4308         }
4309         ioc->fwfault_debug = mpt2sas_fwfault_debug;
4310
4311         /* base internal command bits */
4312         mutex_init(&ioc->base_cmds.mutex);
4313         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4314         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
4315
4316         /* port_enable command bits */
4317         ioc->port_enable_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4318         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
4319
4320         /* transport internal command bits */
4321         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4322         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
4323         mutex_init(&ioc->transport_cmds.mutex);
4324
4325         /* scsih internal command bits */
4326         ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4327         ioc->scsih_cmds.status = MPT2_CMD_NOT_USED;
4328         mutex_init(&ioc->scsih_cmds.mutex);
4329
4330         /* task management internal command bits */
4331         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4332         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
4333         mutex_init(&ioc->tm_cmds.mutex);
4334
4335         /* config page internal command bits */
4336         ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4337         ioc->config_cmds.status = MPT2_CMD_NOT_USED;
4338         mutex_init(&ioc->config_cmds.mutex);
4339
4340         /* ctl module internal command bits */
4341         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4342         ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
4343         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
4344         mutex_init(&ioc->ctl_cmds.mutex);
4345
4346         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4347             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4348             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply ||
4349             !ioc->ctl_cmds.sense) {
4350                 r = -ENOMEM;
4351                 goto out_free_resources;
4352         }
4353
4354         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4355             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4356             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply) {
4357                 r = -ENOMEM;
4358                 goto out_free_resources;
4359         }
4360
4361         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4362                 ioc->event_masks[i] = -1;
4363
4364         /* here we enable the events we care about */
4365         _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
4366         _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
4367         _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
4368         _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4369         _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
4370         _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
4371         _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
4372         _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
4373         _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
4374         _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
4375         r = _base_make_ioc_operational(ioc, CAN_SLEEP);
4376         if (r)
4377                 goto out_free_resources;
4378
4379         if (missing_delay[0] != -1 && missing_delay[1] != -1)
4380                 _base_update_missing_delay(ioc, missing_delay[0],
4381                     missing_delay[1]);
4382
4383         return 0;
4384
4385  out_free_resources:
4386
4387         ioc->remove_host = 1;
4388         mpt2sas_base_free_resources(ioc);
4389         _base_release_memory_pools(ioc);
4390         pci_set_drvdata(ioc->pdev, NULL);
4391         kfree(ioc->cpu_msix_table);
4392         if (ioc->is_warpdrive)
4393                 kfree(ioc->reply_post_host_index);
4394         kfree(ioc->pd_handles);
4395         kfree(ioc->blocking_handles);
4396         kfree(ioc->tm_cmds.reply);
4397         kfree(ioc->transport_cmds.reply);
4398         kfree(ioc->scsih_cmds.reply);
4399         kfree(ioc->config_cmds.reply);
4400         kfree(ioc->base_cmds.reply);
4401         kfree(ioc->port_enable_cmds.reply);
4402         kfree(ioc->ctl_cmds.reply);
4403         kfree(ioc->ctl_cmds.sense);
4404         kfree(ioc->pfacts);
4405         ioc->ctl_cmds.reply = NULL;
4406         ioc->base_cmds.reply = NULL;
4407         ioc->tm_cmds.reply = NULL;
4408         ioc->scsih_cmds.reply = NULL;
4409         ioc->transport_cmds.reply = NULL;
4410         ioc->config_cmds.reply = NULL;
4411         ioc->pfacts = NULL;
4412         return r;
4413 }
4414
4415
4416 /**
4417  * mpt2sas_base_detach - remove controller instance
4418  * @ioc: per adapter object
4419  *
4420  * Return nothing.
4421  */
4422 void
4423 mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc)
4424 {
4425
4426         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4427             __func__));
4428
4429         mpt2sas_base_stop_watchdog(ioc);
4430         mpt2sas_base_free_resources(ioc);
4431         _base_release_memory_pools(ioc);
4432         pci_set_drvdata(ioc->pdev, NULL);
4433         kfree(ioc->cpu_msix_table);
4434         if (ioc->is_warpdrive)
4435                 kfree(ioc->reply_post_host_index);
4436         kfree(ioc->pd_handles);
4437         kfree(ioc->blocking_handles);
4438         kfree(ioc->pfacts);
4439         kfree(ioc->ctl_cmds.reply);
4440         kfree(ioc->ctl_cmds.sense);
4441         kfree(ioc->base_cmds.reply);
4442         kfree(ioc->port_enable_cmds.reply);
4443         kfree(ioc->tm_cmds.reply);
4444         kfree(ioc->transport_cmds.reply);
4445         kfree(ioc->scsih_cmds.reply);
4446         kfree(ioc->config_cmds.reply);
4447 }
4448
4449 /**
4450  * _base_reset_handler - reset callback handler (for base)
4451  * @ioc: per adapter object
4452  * @reset_phase: phase
4453  *
4454  * The handler for doing any required cleanup or initialization.
4455  *
4456  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
4457  * MPT2_IOC_DONE_RESET
4458  *
4459  * Return nothing.
4460  */
4461 static void
4462 _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
4463 {
4464         mpt2sas_scsih_reset_handler(ioc, reset_phase);
4465         mpt2sas_ctl_reset_handler(ioc, reset_phase);
4466         switch (reset_phase) {
4467         case MPT2_IOC_PRE_RESET:
4468                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4469                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
4470                 break;
4471         case MPT2_IOC_AFTER_RESET:
4472                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4473                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
4474                 if (ioc->transport_cmds.status & MPT2_CMD_PENDING) {
4475                         ioc->transport_cmds.status |= MPT2_CMD_RESET;
4476                         mpt2sas_base_free_smid(ioc, ioc->transport_cmds.smid);
4477                         complete(&ioc->transport_cmds.done);
4478                 }
4479                 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
4480                         ioc->base_cmds.status |= MPT2_CMD_RESET;
4481                         mpt2sas_base_free_smid(ioc, ioc->base_cmds.smid);
4482                         complete(&ioc->base_cmds.done);
4483                 }
4484                 if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
4485                         ioc->port_enable_failed = 1;
4486                         ioc->port_enable_cmds.status |= MPT2_CMD_RESET;
4487                         mpt2sas_base_free_smid(ioc, ioc->port_enable_cmds.smid);
4488                         if (ioc->is_driver_loading) {
4489                                 ioc->start_scan_failed =
4490                                     MPI2_IOCSTATUS_INTERNAL_ERROR;
4491                                 ioc->start_scan = 0;
4492                                 ioc->port_enable_cmds.status =
4493                                                 MPT2_CMD_NOT_USED;
4494                         } else
4495                                 complete(&ioc->port_enable_cmds.done);
4496
4497                 }
4498                 if (ioc->config_cmds.status & MPT2_CMD_PENDING) {
4499                         ioc->config_cmds.status |= MPT2_CMD_RESET;
4500                         mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid);
4501                         ioc->config_cmds.smid = USHRT_MAX;
4502                         complete(&ioc->config_cmds.done);
4503                 }
4504                 break;
4505         case MPT2_IOC_DONE_RESET:
4506                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4507                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
4508                 break;
4509         }
4510 }
4511
4512 /**
4513  * _wait_for_commands_to_complete - reset controller
4514  * @ioc: Pointer to MPT_ADAPTER structure
4515  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4516  *
4517  * This function waiting(3s) for all pending commands to complete
4518  * prior to putting controller in reset.
4519  */
4520 static void
4521 _wait_for_commands_to_complete(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4522 {
4523         u32 ioc_state;
4524         unsigned long flags;
4525         u16 i;
4526
4527         ioc->pending_io_count = 0;
4528         if (sleep_flag != CAN_SLEEP)
4529                 return;
4530
4531         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4532         if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
4533                 return;
4534
4535         /* pending command count */
4536         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4537         for (i = 0; i < ioc->scsiio_depth; i++)
4538                 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
4539                         ioc->pending_io_count++;
4540         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4541
4542         if (!ioc->pending_io_count)
4543                 return;
4544
4545         /* wait for pending commands to complete */
4546         wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ);
4547 }
4548
4549 /**
4550  * mpt2sas_base_hard_reset_handler - reset controller
4551  * @ioc: Pointer to MPT_ADAPTER structure
4552  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4553  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4554  *
4555  * Returns 0 for success, non-zero for failure.
4556  */
4557 int
4558 mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4559     enum reset_type type)
4560 {
4561         int r;
4562         unsigned long flags;
4563
4564         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
4565             __func__));
4566
4567         if (ioc->pci_error_recovery) {
4568                 printk(MPT2SAS_ERR_FMT "%s: pci error recovery reset\n",
4569                     ioc->name, __func__);
4570                 r = 0;
4571                 goto out_unlocked;
4572         }
4573
4574         if (mpt2sas_fwfault_debug)
4575                 mpt2sas_halt_firmware(ioc);
4576
4577         /* TODO - What we really should be doing is pulling
4578          * out all the code associated with NO_SLEEP; its never used.
4579          * That is legacy code from mpt fusion driver, ported over.
4580          * I will leave this BUG_ON here for now till its been resolved.
4581          */
4582         BUG_ON(sleep_flag == NO_SLEEP);
4583
4584         /* wait for an active reset in progress to complete */
4585         if (!mutex_trylock(&ioc->reset_in_progress_mutex)) {
4586                 do {
4587                         ssleep(1);
4588                 } while (ioc->shost_recovery == 1);
4589                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4590                     __func__));
4591                 return ioc->ioc_reset_in_progress_status;
4592         }
4593
4594         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4595         ioc->shost_recovery = 1;
4596         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4597
4598         _base_reset_handler(ioc, MPT2_IOC_PRE_RESET);
4599         _wait_for_commands_to_complete(ioc, sleep_flag);
4600         _base_mask_interrupts(ioc);
4601         r = _base_make_ioc_ready(ioc, sleep_flag, type);
4602         if (r)
4603                 goto out;
4604         _base_reset_handler(ioc, MPT2_IOC_AFTER_RESET);
4605
4606         /* If this hard reset is called while port enable is active, then
4607          * there is no reason to call make_ioc_operational
4608          */
4609         if (ioc->is_driver_loading && ioc->port_enable_failed) {
4610                 ioc->remove_host = 1;
4611                 r = -EFAULT;
4612                 goto out;
4613         }
4614         r = _base_make_ioc_operational(ioc, sleep_flag);
4615         if (!r)
4616                 _base_reset_handler(ioc, MPT2_IOC_DONE_RESET);
4617  out:
4618         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: %s\n",
4619             ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
4620
4621         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4622         ioc->ioc_reset_in_progress_status = r;
4623         ioc->shost_recovery = 0;
4624         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4625         mutex_unlock(&ioc->reset_in_progress_mutex);
4626
4627  out_unlocked:
4628         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4629             __func__));
4630         return r;
4631 }