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