drivers/scsi/mpt2sas/mpt2sas_base.c

   1 /*
   2  * This is the Fusion MPT base driver providing common API layer interface
   3  * for access to MPT (Message Passing Technology) firmware.
   4  *
   5  * This code is based on drivers/scsi/mpt2sas/mpt2_base.c
   6  * Copyright (C) 2007-2012  LSI Corporation
   7  *  (mailto:DL-MPTFusionLinux@lsi.com)
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * NO WARRANTY
  20  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  21  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  22  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  23  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  24  * solely responsible for determining the appropriateness of using and
  25  * distributing the Program and assumes all risks associated with its
  26  * exercise of rights under this Agreement, including but not limited to
  27  * the risks and costs of program errors, damage to or loss of data,
  28  * programs or equipment, and unavailability or interruption of operations.
  29
  30  * DISCLAIMER OF LIABILITY
  31  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  32  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  34  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  35  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  36  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  37  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  38
  39  * You should have received a copy of the GNU General Public License
  40  * along with this program; if not, write to the Free Software
  41  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  42  * USA.
  43  */
  44
  45 #include <linux/kernel.h>
  46 #include <linux/module.h>
  47 #include <linux/errno.h>
  48 #include <linux/init.h>
  49 #include <linux/slab.h>
  50 #include <linux/types.h>
  51 #include <linux/pci.h>
  52 #include <linux/kdev_t.h>
  53 #include <linux/blkdev.h>
  54 #include <linux/delay.h>
  55 #include <linux/interrupt.h>
  56 #include <linux/dma-mapping.h>
  57 #include <linux/sort.h>
  58 #include <linux/io.h>
  59 #include <linux/time.h>
  60 #include <linux/kthread.h>
  61 #include <linux/aer.h>
  62
  63 #include "mpt2sas_base.h"
  64
  65 static MPT_CALLBACK     mpt_callbacks[MPT_MAX_CALLBACKS];
  66
  67 #define FAULT_POLLING_INTERVAL 1000 /* in milliseconds */
  68
  69 #define MAX_HBA_QUEUE_DEPTH     30000
  70 #define MAX_CHAIN_DEPTH         100000
  71 static int max_queue_depth = -1;
  72 module_param(max_queue_depth, int, 0);
  73 MODULE_PARM_DESC(max_queue_depth, " max controller queue depth ");
  74
  75 static int max_sgl_entries = -1;
  76 module_param(max_sgl_entries, int, 0);
  77 MODULE_PARM_DESC(max_sgl_entries, " max sg entries ");
  78
  79 static int msix_disable = -1;
  80 module_param(msix_disable, int, 0);
  81 MODULE_PARM_DESC(msix_disable, " disable msix routed interrupts (default=0)");
  82
  83 static int 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         /* align the reply post queue on the next 16 count boundary */
2507         if (!ioc->reply_free_queue_depth % 16)
2508                 ioc->reply_post_queue_depth = ioc->reply_free_queue_depth + 16;
2509         else
2510                 ioc->reply_post_queue_depth = ioc->reply_free_queue_depth +
2511                                 32 - (ioc->reply_free_queue_depth % 16);
2512         if (ioc->reply_post_queue_depth >
2513             facts->MaxReplyDescriptorPostQueueDepth) {
2514                 ioc->reply_post_queue_depth = min_t(u16,
2515                     (facts->MaxReplyDescriptorPostQueueDepth -
2516                     (facts->MaxReplyDescriptorPostQueueDepth % 16)),
2517                     (ioc->hba_queue_depth - (ioc->hba_queue_depth % 16)));
2518                 ioc->reply_free_queue_depth = ioc->reply_post_queue_depth - 16;
2519                 ioc->hba_queue_depth = ioc->reply_free_queue_depth - 64;
2520         }
2521
2522
2523         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "
2524             "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
2525             "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
2526             ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
2527             ioc->chains_needed_per_io));
2528
2529         ioc->scsiio_depth = ioc->hba_queue_depth -
2530             ioc->hi_priority_depth - ioc->internal_depth;
2531
2532         /* set the scsi host can_queue depth
2533          * with some internal commands that could be outstanding
2534          */
2535         ioc->shost->can_queue = ioc->scsiio_depth;
2536         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host: "
2537             "can_queue depth (%d)\n", ioc->name, ioc->shost->can_queue));
2538
2539         /* contiguous pool for request and chains, 16 byte align, one extra "
2540          * "frame for smid=0
2541          */
2542         ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth;
2543         sz = ((ioc->scsiio_depth + 1) * ioc->request_sz);
2544
2545         /* hi-priority queue */
2546         sz += (ioc->hi_priority_depth * ioc->request_sz);
2547
2548         /* internal queue */
2549         sz += (ioc->internal_depth * ioc->request_sz);
2550
2551         ioc->request_dma_sz = sz;
2552         ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
2553         if (!ioc->request) {
2554                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2555                     "failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2556                     "total(%d kB)\n", ioc->name, ioc->hba_queue_depth,
2557                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2558                 if (ioc->scsiio_depth < MPT2SAS_SAS_QUEUE_DEPTH)
2559                         goto out;
2560                 retry_sz += 64;
2561                 ioc->hba_queue_depth = max_request_credit - retry_sz;
2562                 goto retry_allocation;
2563         }
2564
2565         if (retry_sz)
2566                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2567                     "succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2568                     "total(%d kb)\n", ioc->name, ioc->hba_queue_depth,
2569                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2570
2571
2572         /* hi-priority queue */
2573         ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) *
2574             ioc->request_sz);
2575         ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) *
2576             ioc->request_sz);
2577
2578         /* internal queue */
2579         ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth *
2580             ioc->request_sz);
2581         ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth *
2582             ioc->request_sz);
2583
2584
2585         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool(0x%p): "
2586             "depth(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2587             ioc->request, ioc->hba_queue_depth, ioc->request_sz,
2588             (ioc->hba_queue_depth * ioc->request_sz)/1024));
2589         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool: dma(0x%llx)\n",
2590             ioc->name, (unsigned long long) ioc->request_dma));
2591         total_sz += sz;
2592
2593         sz = ioc->scsiio_depth * sizeof(struct scsiio_tracker);
2594         ioc->scsi_lookup_pages = get_order(sz);
2595         ioc->scsi_lookup = (struct scsiio_tracker *)__get_free_pages(
2596             GFP_KERNEL, ioc->scsi_lookup_pages);
2597         if (!ioc->scsi_lookup) {
2598                 printk(MPT2SAS_ERR_FMT "scsi_lookup: get_free_pages failed, "
2599                     "sz(%d)\n", ioc->name, (int)sz);
2600                 goto out;
2601         }
2602
2603         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsiio(0x%p): "
2604             "depth(%d)\n", ioc->name, ioc->request,
2605             ioc->scsiio_depth));
2606
2607         ioc->chain_depth = min_t(u32, ioc->chain_depth, MAX_CHAIN_DEPTH);
2608         sz = ioc->chain_depth * sizeof(struct chain_tracker);
2609         ioc->chain_pages = get_order(sz);
2610
2611         ioc->chain_lookup = (struct chain_tracker *)__get_free_pages(
2612             GFP_KERNEL, ioc->chain_pages);
2613         if (!ioc->chain_lookup) {
2614                 printk(MPT2SAS_ERR_FMT "chain_lookup: get_free_pages failed, "
2615                     "sz(%d)\n", ioc->name, (int)sz);
2616                 goto out;
2617         }
2618         ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev,
2619             ioc->request_sz, 16, 0);
2620         if (!ioc->chain_dma_pool) {
2621                 printk(MPT2SAS_ERR_FMT "chain_dma_pool: pci_pool_create "
2622                     "failed\n", ioc->name);
2623                 goto out;
2624         }
2625         for (i = 0; i < ioc->chain_depth; i++) {
2626                 ioc->chain_lookup[i].chain_buffer = pci_pool_alloc(
2627                     ioc->chain_dma_pool , GFP_KERNEL,
2628                     &ioc->chain_lookup[i].chain_buffer_dma);
2629                 if (!ioc->chain_lookup[i].chain_buffer) {
2630                         ioc->chain_depth = i;
2631                         goto chain_done;
2632                 }
2633                 total_sz += ioc->request_sz;
2634         }
2635 chain_done:
2636         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "chain pool depth"
2637             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2638             ioc->chain_depth, ioc->request_sz, ((ioc->chain_depth *
2639             ioc->request_sz))/1024));
2640
2641         /* initialize hi-priority queue smid's */
2642         ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth,
2643             sizeof(struct request_tracker), GFP_KERNEL);
2644         if (!ioc->hpr_lookup) {
2645                 printk(MPT2SAS_ERR_FMT "hpr_lookup: kcalloc failed\n",
2646                     ioc->name);
2647                 goto out;
2648         }
2649         ioc->hi_priority_smid = ioc->scsiio_depth + 1;
2650         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hi_priority(0x%p): "
2651             "depth(%d), start smid(%d)\n", ioc->name, ioc->hi_priority,
2652             ioc->hi_priority_depth, ioc->hi_priority_smid));
2653
2654         /* initialize internal queue smid's */
2655         ioc->internal_lookup = kcalloc(ioc->internal_depth,
2656             sizeof(struct request_tracker), GFP_KERNEL);
2657         if (!ioc->internal_lookup) {
2658                 printk(MPT2SAS_ERR_FMT "internal_lookup: kcalloc failed\n",
2659                     ioc->name);
2660                 goto out;
2661         }
2662         ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth;
2663         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "internal(0x%p): "
2664             "depth(%d), start smid(%d)\n", ioc->name, ioc->internal,
2665              ioc->internal_depth, ioc->internal_smid));
2666
2667         /* sense buffers, 4 byte align */
2668         sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE;
2669         ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
2670             0);
2671         if (!ioc->sense_dma_pool) {
2672                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_create failed\n",
2673                     ioc->name);
2674                 goto out;
2675         }
2676         ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
2677             &ioc->sense_dma);
2678         if (!ioc->sense) {
2679                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_alloc failed\n",
2680                     ioc->name);
2681                 goto out;
2682         }
2683         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2684             "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
2685             "(%d kB)\n", ioc->name, ioc->sense, ioc->scsiio_depth,
2686             SCSI_SENSE_BUFFERSIZE, sz/1024));
2687         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_dma(0x%llx)\n",
2688             ioc->name, (unsigned long long)ioc->sense_dma));
2689         total_sz += sz;
2690
2691         /* reply pool, 4 byte align */
2692         sz = ioc->reply_free_queue_depth * ioc->reply_sz;
2693         ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
2694             0);
2695         if (!ioc->reply_dma_pool) {
2696                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_create failed\n",
2697                     ioc->name);
2698                 goto out;
2699         }
2700         ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
2701             &ioc->reply_dma);
2702         if (!ioc->reply) {
2703                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_alloc failed\n",
2704                     ioc->name);
2705                 goto out;
2706         }
2707         ioc->reply_dma_min_address = (u32)(ioc->reply_dma);
2708         ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz;
2709         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply pool(0x%p): depth"
2710             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->reply,
2711             ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
2712         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_dma(0x%llx)\n",
2713             ioc->name, (unsigned long long)ioc->reply_dma));
2714         total_sz += sz;
2715
2716         /* reply free queue, 16 byte align */
2717         sz = ioc->reply_free_queue_depth * 4;
2718         ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
2719             ioc->pdev, sz, 16, 0);
2720         if (!ioc->reply_free_dma_pool) {
2721                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_create "
2722                     "failed\n", ioc->name);
2723                 goto out;
2724         }
2725         ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
2726             &ioc->reply_free_dma);
2727         if (!ioc->reply_free) {
2728                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_alloc "
2729                     "failed\n", ioc->name);
2730                 goto out;
2731         }
2732         memset(ioc->reply_free, 0, sz);
2733         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free pool(0x%p): "
2734             "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
2735             ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
2736         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_dma"
2737             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->reply_free_dma));
2738         total_sz += sz;
2739
2740         /* reply post queue, 16 byte align */
2741         reply_post_free_sz = ioc->reply_post_queue_depth *
2742             sizeof(Mpi2DefaultReplyDescriptor_t);
2743         if (_base_is_controller_msix_enabled(ioc))
2744                 sz = reply_post_free_sz * ioc->reply_queue_count;
2745         else
2746                 sz = reply_post_free_sz;
2747         ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
2748             ioc->pdev, sz, 16, 0);
2749         if (!ioc->reply_post_free_dma_pool) {
2750                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_create "
2751                     "failed\n", ioc->name);
2752                 goto out;
2753         }
2754         ioc->reply_post_free = pci_pool_alloc(ioc->reply_post_free_dma_pool ,
2755             GFP_KERNEL, &ioc->reply_post_free_dma);
2756         if (!ioc->reply_post_free) {
2757                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_alloc "
2758                     "failed\n", ioc->name);
2759                 goto out;
2760         }
2761         memset(ioc->reply_post_free, 0, sz);
2762         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply post free pool"
2763             "(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n",
2764             ioc->name, ioc->reply_post_free, ioc->reply_post_queue_depth, 8,
2765             sz/1024));
2766         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_post_free_dma = "
2767             "(0x%llx)\n", ioc->name, (unsigned long long)
2768             ioc->reply_post_free_dma));
2769         total_sz += sz;
2770
2771         ioc->config_page_sz = 512;
2772         ioc->config_page = pci_alloc_consistent(ioc->pdev,
2773             ioc->config_page_sz, &ioc->config_page_dma);
2774         if (!ioc->config_page) {
2775                 printk(MPT2SAS_ERR_FMT "config page: pci_pool_alloc "
2776                     "failed\n", ioc->name);
2777                 goto out;
2778         }
2779         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config page(0x%p): size"
2780             "(%d)\n", ioc->name, ioc->config_page, ioc->config_page_sz));
2781         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config_page_dma"
2782             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->config_page_dma));
2783         total_sz += ioc->config_page_sz;
2784
2785         printk(MPT2SAS_INFO_FMT "Allocated physical memory: size(%d kB)\n",
2786             ioc->name, total_sz/1024);
2787         printk(MPT2SAS_INFO_FMT "Current Controller Queue Depth(%d), "
2788             "Max Controller Queue Depth(%d)\n",
2789             ioc->name, ioc->shost->can_queue, facts->RequestCredit);
2790         printk(MPT2SAS_INFO_FMT "Scatter Gather Elements per IO(%d)\n",
2791             ioc->name, ioc->shost->sg_tablesize);
2792         return 0;
2793
2794  out:
2795         return -ENOMEM;
2796 }
2797
2798
2799 /**
2800  * mpt2sas_base_get_iocstate - Get the current state of a MPT adapter.
2801  * @ioc: Pointer to MPT_ADAPTER structure
2802  * @cooked: Request raw or cooked IOC state
2803  *
2804  * Returns all IOC Doorbell register bits if cooked==0, else just the
2805  * Doorbell bits in MPI_IOC_STATE_MASK.
2806  */
2807 u32
2808 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked)
2809 {
2810         u32 s, sc;
2811
2812         s = readl(&ioc->chip->Doorbell);
2813         sc = s & MPI2_IOC_STATE_MASK;
2814         return cooked ? sc : s;
2815 }
2816
2817 /**
2818  * _base_wait_on_iocstate - waiting on a particular ioc state
2819  * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
2820  * @timeout: timeout in second
2821  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2822  *
2823  * Returns 0 for success, non-zero for failure.
2824  */
2825 static int
2826 _base_wait_on_iocstate(struct MPT2SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
2827     int sleep_flag)
2828 {
2829         u32 count, cntdn;
2830         u32 current_state;
2831
2832         count = 0;
2833         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2834         do {
2835                 current_state = mpt2sas_base_get_iocstate(ioc, 1);
2836                 if (current_state == ioc_state)
2837                         return 0;
2838                 if (count && current_state == MPI2_IOC_STATE_FAULT)
2839                         break;
2840                 if (sleep_flag == CAN_SLEEP)
2841                         msleep(1);
2842                 else
2843                         udelay(500);
2844                 count++;
2845         } while (--cntdn);
2846
2847         return current_state;
2848 }
2849
2850 /**
2851  * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
2852  * a write to the doorbell)
2853  * @ioc: per adapter object
2854  * @timeout: timeout in second
2855  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2856  *
2857  * Returns 0 for success, non-zero for failure.
2858  *
2859  * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
2860  */
2861 static int
2862 _base_wait_for_doorbell_int(struct MPT2SAS_ADAPTER *ioc, int timeout,
2863     int sleep_flag)
2864 {
2865         u32 cntdn, count;
2866         u32 int_status;
2867
2868         count = 0;
2869         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2870         do {
2871                 int_status = readl(&ioc->chip->HostInterruptStatus);
2872                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2873                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2874                             "successful count(%d), timeout(%d)\n", ioc->name,
2875                             __func__, count, timeout));
2876                         return 0;
2877                 }
2878                 if (sleep_flag == CAN_SLEEP)
2879                         msleep(1);
2880                 else
2881                         udelay(500);
2882                 count++;
2883         } while (--cntdn);
2884
2885         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2886             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2887         return -EFAULT;
2888 }
2889
2890 /**
2891  * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
2892  * @ioc: per adapter object
2893  * @timeout: timeout in second
2894  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2895  *
2896  * Returns 0 for success, non-zero for failure.
2897  *
2898  * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
2899  * doorbell.
2900  */
2901 static int
2902 _base_wait_for_doorbell_ack(struct MPT2SAS_ADAPTER *ioc, int timeout,
2903     int sleep_flag)
2904 {
2905         u32 cntdn, count;
2906         u32 int_status;
2907         u32 doorbell;
2908
2909         count = 0;
2910         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2911         do {
2912                 int_status = readl(&ioc->chip->HostInterruptStatus);
2913                 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
2914                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2915                             "successful count(%d), timeout(%d)\n", ioc->name,
2916                             __func__, count, timeout));
2917                         return 0;
2918                 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2919                         doorbell = readl(&ioc->chip->Doorbell);
2920                         if ((doorbell & MPI2_IOC_STATE_MASK) ==
2921                             MPI2_IOC_STATE_FAULT) {
2922                                 mpt2sas_base_fault_info(ioc , doorbell);
2923                                 return -EFAULT;
2924                         }
2925                 } else if (int_status == 0xFFFFFFFF)
2926                         goto out;
2927
2928                 if (sleep_flag == CAN_SLEEP)
2929                         msleep(1);
2930                 else
2931                         udelay(500);
2932                 count++;
2933         } while (--cntdn);
2934
2935  out:
2936         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2937             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2938         return -EFAULT;
2939 }
2940
2941 /**
2942  * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
2943  * @ioc: per adapter object
2944  * @timeout: timeout in second
2945  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2946  *
2947  * Returns 0 for success, non-zero for failure.
2948  *
2949  */
2950 static int
2951 _base_wait_for_doorbell_not_used(struct MPT2SAS_ADAPTER *ioc, int timeout,
2952     int sleep_flag)
2953 {
2954         u32 cntdn, count;
2955         u32 doorbell_reg;
2956
2957         count = 0;
2958         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2959         do {
2960                 doorbell_reg = readl(&ioc->chip->Doorbell);
2961                 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
2962                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2963                             "successful count(%d), timeout(%d)\n", ioc->name,
2964                             __func__, count, timeout));
2965                         return 0;
2966                 }
2967                 if (sleep_flag == CAN_SLEEP)
2968                         msleep(1);
2969                 else
2970                         udelay(500);
2971                 count++;
2972         } while (--cntdn);
2973
2974         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2975             "doorbell_reg(%x)!\n", ioc->name, __func__, count, doorbell_reg);
2976         return -EFAULT;
2977 }
2978
2979 /**
2980  * _base_send_ioc_reset - send doorbell reset
2981  * @ioc: per adapter object
2982  * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
2983  * @timeout: timeout in second
2984  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2985  *
2986  * Returns 0 for success, non-zero for failure.
2987  */
2988 static int
2989 _base_send_ioc_reset(struct MPT2SAS_ADAPTER *ioc, u8 reset_type, int timeout,
2990     int sleep_flag)
2991 {
2992         u32 ioc_state;
2993         int r = 0;
2994
2995         if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
2996                 printk(MPT2SAS_ERR_FMT "%s: unknown reset_type\n",
2997                     ioc->name, __func__);
2998                 return -EFAULT;
2999         }
3000
3001         if (!(ioc->facts.IOCCapabilities &
3002            MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
3003                 return -EFAULT;
3004
3005         printk(MPT2SAS_INFO_FMT "sending message unit reset !!\n", ioc->name);
3006
3007         writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
3008             &ioc->chip->Doorbell);
3009         if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
3010                 r = -EFAULT;
3011                 goto out;
3012         }
3013         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
3014             timeout, sleep_flag);
3015         if (ioc_state) {
3016                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3017                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3018                 r = -EFAULT;
3019                 goto out;
3020         }
3021  out:
3022         printk(MPT2SAS_INFO_FMT "message unit reset: %s\n",
3023             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
3024         return r;
3025 }
3026
3027 /**
3028  * _base_handshake_req_reply_wait - send request thru doorbell interface
3029  * @ioc: per adapter object
3030  * @request_bytes: request length
3031  * @request: pointer having request payload
3032  * @reply_bytes: reply length
3033  * @reply: pointer to reply payload
3034  * @timeout: timeout in second
3035  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3036  *
3037  * Returns 0 for success, non-zero for failure.
3038  */
3039 static int
3040 _base_handshake_req_reply_wait(struct MPT2SAS_ADAPTER *ioc, int request_bytes,
3041     u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
3042 {
3043         MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
3044         int i;
3045         u8 failed;
3046         u16 dummy;
3047         __le32 *mfp;
3048
3049         /* make sure doorbell is not in use */
3050         if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
3051                 printk(MPT2SAS_ERR_FMT "doorbell is in use "
3052                     " (line=%d)\n", ioc->name, __LINE__);
3053                 return -EFAULT;
3054         }
3055
3056         /* clear pending doorbell interrupts from previous state changes */
3057         if (readl(&ioc->chip->HostInterruptStatus) &
3058             MPI2_HIS_IOC2SYS_DB_STATUS)
3059                 writel(0, &ioc->chip->HostInterruptStatus);
3060
3061         /* send message to ioc */
3062         writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
3063             ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
3064             &ioc->chip->Doorbell);
3065
3066         if ((_base_wait_for_doorbell_int(ioc, 5, NO_SLEEP))) {
3067                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3068                    "int failed (line=%d)\n", ioc->name, __LINE__);
3069                 return -EFAULT;
3070         }
3071         writel(0, &ioc->chip->HostInterruptStatus);
3072
3073         if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
3074                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3075                     "ack failed (line=%d)\n", ioc->name, __LINE__);
3076                 return -EFAULT;
3077         }
3078
3079         /* send message 32-bits at a time */
3080         for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
3081                 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
3082                 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
3083                         failed = 1;
3084         }
3085
3086         if (failed) {
3087                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3088                     "sending request failed (line=%d)\n", ioc->name, __LINE__);
3089                 return -EFAULT;
3090         }
3091
3092         /* now wait for the reply */
3093         if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
3094                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3095                    "int failed (line=%d)\n", ioc->name, __LINE__);
3096                 return -EFAULT;
3097         }
3098
3099         /* read the first two 16-bits, it gives the total length of the reply */
3100         reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3101             & MPI2_DOORBELL_DATA_MASK);
3102         writel(0, &ioc->chip->HostInterruptStatus);
3103         if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3104                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3105                    "int failed (line=%d)\n", ioc->name, __LINE__);
3106                 return -EFAULT;
3107         }
3108         reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3109             & MPI2_DOORBELL_DATA_MASK);
3110         writel(0, &ioc->chip->HostInterruptStatus);
3111
3112         for (i = 2; i < default_reply->MsgLength * 2; i++)  {
3113                 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3114                         printk(MPT2SAS_ERR_FMT "doorbell "
3115                             "handshake int failed (line=%d)\n", ioc->name,
3116                             __LINE__);
3117                         return -EFAULT;
3118                 }
3119                 if (i >=  reply_bytes/2) /* overflow case */
3120                         dummy = readl(&ioc->chip->Doorbell);
3121                 else
3122                         reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3123                             & MPI2_DOORBELL_DATA_MASK);
3124                 writel(0, &ioc->chip->HostInterruptStatus);
3125         }
3126
3127         _base_wait_for_doorbell_int(ioc, 5, sleep_flag);
3128         if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
3129                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "doorbell is in use "
3130                     " (line=%d)\n", ioc->name, __LINE__));
3131         }
3132         writel(0, &ioc->chip->HostInterruptStatus);
3133
3134         if (ioc->logging_level & MPT_DEBUG_INIT) {
3135                 mfp = (__le32 *)reply;
3136                 printk(KERN_INFO "\toffset:data\n");
3137                 for (i = 0; i < reply_bytes/4; i++)
3138                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3139                             le32_to_cpu(mfp[i]));
3140         }
3141         return 0;
3142 }
3143
3144 /**
3145  * mpt2sas_base_sas_iounit_control - send sas iounit control to FW
3146  * @ioc: per adapter object
3147  * @mpi_reply: the reply payload from FW
3148  * @mpi_request: the request payload sent to FW
3149  *
3150  * The SAS IO Unit Control Request message allows the host to perform low-level
3151  * operations, such as resets on the PHYs of the IO Unit, also allows the host
3152  * to obtain the IOC assigned device handles for a device if it has other
3153  * identifying information about the device, in addition allows the host to
3154  * remove IOC resources associated with the device.
3155  *
3156  * Returns 0 for success, non-zero for failure.
3157  */
3158 int
3159 mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
3160     Mpi2SasIoUnitControlReply_t *mpi_reply,
3161     Mpi2SasIoUnitControlRequest_t *mpi_request)
3162 {
3163         u16 smid;
3164         u32 ioc_state;
3165         unsigned long timeleft;
3166         u8 issue_reset;
3167         int rc;
3168         void *request;
3169         u16 wait_state_count;
3170
3171         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3172             __func__));
3173
3174         mutex_lock(&ioc->base_cmds.mutex);
3175
3176         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3177                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3178                     ioc->name, __func__);
3179                 rc = -EAGAIN;
3180                 goto out;
3181         }
3182
3183         wait_state_count = 0;
3184         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3185         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3186                 if (wait_state_count++ == 10) {
3187                         printk(MPT2SAS_ERR_FMT
3188                             "%s: failed due to ioc not operational\n",
3189                             ioc->name, __func__);
3190                         rc = -EFAULT;
3191                         goto out;
3192                 }
3193                 ssleep(1);
3194                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3195                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3196                     "operational state(count=%d)\n", ioc->name,
3197                     __func__, wait_state_count);
3198         }
3199
3200         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3201         if (!smid) {
3202                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3203                     ioc->name, __func__);
3204                 rc = -EAGAIN;
3205                 goto out;
3206         }
3207
3208         rc = 0;
3209         ioc->base_cmds.status = MPT2_CMD_PENDING;
3210         request = mpt2sas_base_get_msg_frame(ioc, smid);
3211         ioc->base_cmds.smid = smid;
3212         memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
3213         if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3214             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
3215                 ioc->ioc_link_reset_in_progress = 1;
3216         init_completion(&ioc->base_cmds.done);
3217         mpt2sas_base_put_smid_default(ioc, smid);
3218         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3219             msecs_to_jiffies(10000));
3220         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3221             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
3222             ioc->ioc_link_reset_in_progress)
3223                 ioc->ioc_link_reset_in_progress = 0;
3224         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3225                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3226                     ioc->name, __func__);
3227                 _debug_dump_mf(mpi_request,
3228                     sizeof(Mpi2SasIoUnitControlRequest_t)/4);
3229                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3230                         issue_reset = 1;
3231                 goto issue_host_reset;
3232         }
3233         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3234                 memcpy(mpi_reply, ioc->base_cmds.reply,
3235                     sizeof(Mpi2SasIoUnitControlReply_t));
3236         else
3237                 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
3238         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3239         goto out;
3240
3241  issue_host_reset:
3242         if (issue_reset)
3243                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3244                     FORCE_BIG_HAMMER);
3245         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3246         rc = -EFAULT;
3247  out:
3248         mutex_unlock(&ioc->base_cmds.mutex);
3249         return rc;
3250 }
3251
3252
3253 /**
3254  * mpt2sas_base_scsi_enclosure_processor - sending request to sep device
3255  * @ioc: per adapter object
3256  * @mpi_reply: the reply payload from FW
3257  * @mpi_request: the request payload sent to FW
3258  *
3259  * The SCSI Enclosure Processor request message causes the IOC to
3260  * communicate with SES devices to control LED status signals.
3261  *
3262  * Returns 0 for success, non-zero for failure.
3263  */
3264 int
3265 mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
3266     Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
3267 {
3268         u16 smid;
3269         u32 ioc_state;
3270         unsigned long timeleft;
3271         u8 issue_reset;
3272         int rc;
3273         void *request;
3274         u16 wait_state_count;
3275
3276         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3277             __func__));
3278
3279         mutex_lock(&ioc->base_cmds.mutex);
3280
3281         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3282                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3283                     ioc->name, __func__);
3284                 rc = -EAGAIN;
3285                 goto out;
3286         }
3287
3288         wait_state_count = 0;
3289         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3290         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3291                 if (wait_state_count++ == 10) {
3292                         printk(MPT2SAS_ERR_FMT
3293                             "%s: failed due to ioc not operational\n",
3294                             ioc->name, __func__);
3295                         rc = -EFAULT;
3296                         goto out;
3297                 }
3298                 ssleep(1);
3299                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3300                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3301                     "operational state(count=%d)\n", ioc->name,
3302                     __func__, wait_state_count);
3303         }
3304
3305         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3306         if (!smid) {
3307                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3308                     ioc->name, __func__);
3309                 rc = -EAGAIN;
3310                 goto out;
3311         }
3312
3313         rc = 0;
3314         ioc->base_cmds.status = MPT2_CMD_PENDING;
3315         request = mpt2sas_base_get_msg_frame(ioc, smid);
3316         ioc->base_cmds.smid = smid;
3317         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
3318         init_completion(&ioc->base_cmds.done);
3319         mpt2sas_base_put_smid_default(ioc, smid);
3320         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3321             msecs_to_jiffies(10000));
3322         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3323                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3324                     ioc->name, __func__);
3325                 _debug_dump_mf(mpi_request,
3326                     sizeof(Mpi2SepRequest_t)/4);
3327                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3328                         issue_reset = 1;
3329                 goto issue_host_reset;
3330         }
3331         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3332                 memcpy(mpi_reply, ioc->base_cmds.reply,
3333                     sizeof(Mpi2SepReply_t));
3334         else
3335                 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
3336         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3337         goto out;
3338
3339  issue_host_reset:
3340         if (issue_reset)
3341                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3342                     FORCE_BIG_HAMMER);
3343         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3344         rc = -EFAULT;
3345  out:
3346         mutex_unlock(&ioc->base_cmds.mutex);
3347         return rc;
3348 }
3349
3350 /**
3351  * _base_get_port_facts - obtain port facts reply and save in ioc
3352  * @ioc: per adapter object
3353  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3354  *
3355  * Returns 0 for success, non-zero for failure.
3356  */
3357 static int
3358 _base_get_port_facts(struct MPT2SAS_ADAPTER *ioc, int port, int sleep_flag)
3359 {
3360         Mpi2PortFactsRequest_t mpi_request;
3361         Mpi2PortFactsReply_t mpi_reply;
3362         struct mpt2sas_port_facts *pfacts;
3363         int mpi_reply_sz, mpi_request_sz, r;
3364
3365         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3366             __func__));
3367
3368         mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
3369         mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
3370         memset(&mpi_request, 0, mpi_request_sz);
3371         mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
3372         mpi_request.PortNumber = port;
3373         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3374             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3375
3376         if (r != 0) {
3377                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3378                     ioc->name, __func__, r);
3379                 return r;
3380         }
3381
3382         pfacts = &ioc->pfacts[port];
3383         memset(pfacts, 0, sizeof(struct mpt2sas_port_facts));
3384         pfacts->PortNumber = mpi_reply.PortNumber;
3385         pfacts->VP_ID = mpi_reply.VP_ID;
3386         pfacts->VF_ID = mpi_reply.VF_ID;
3387         pfacts->MaxPostedCmdBuffers =
3388             le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
3389
3390         return 0;
3391 }
3392
3393 /**
3394  * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
3395  * @ioc: per adapter object
3396  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3397  *
3398  * Returns 0 for success, non-zero for failure.
3399  */
3400 static int
3401 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3402 {
3403         Mpi2IOCFactsRequest_t mpi_request;
3404         Mpi2IOCFactsReply_t mpi_reply;
3405         struct mpt2sas_facts *facts;
3406         int mpi_reply_sz, mpi_request_sz, r;
3407
3408         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3409             __func__));
3410
3411         mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
3412         mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
3413         memset(&mpi_request, 0, mpi_request_sz);
3414         mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
3415         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3416             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3417
3418         if (r != 0) {
3419                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3420                     ioc->name, __func__, r);
3421                 return r;
3422         }
3423
3424         facts = &ioc->facts;
3425         memset(facts, 0, sizeof(struct mpt2sas_facts));
3426         facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
3427         facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
3428         facts->VP_ID = mpi_reply.VP_ID;
3429         facts->VF_ID = mpi_reply.VF_ID;
3430         facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
3431         facts->MaxChainDepth = mpi_reply.MaxChainDepth;
3432         facts->WhoInit = mpi_reply.WhoInit;
3433         facts->NumberOfPorts = mpi_reply.NumberOfPorts;
3434         facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors;
3435         facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
3436         facts->MaxReplyDescriptorPostQueueDepth =
3437             le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
3438         facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
3439         facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
3440         if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
3441                 ioc->ir_firmware = 1;
3442         facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
3443         facts->IOCRequestFrameSize =
3444             le16_to_cpu(mpi_reply.IOCRequestFrameSize);
3445         facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
3446         facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
3447         ioc->shost->max_id = -1;
3448         facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
3449         facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
3450         facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
3451         facts->HighPriorityCredit =
3452             le16_to_cpu(mpi_reply.HighPriorityCredit);
3453         facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
3454         facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
3455
3456         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hba queue depth(%d), "
3457             "max chains per io(%d)\n", ioc->name, facts->RequestCredit,
3458             facts->MaxChainDepth));
3459         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request frame size(%d), "
3460             "reply frame size(%d)\n", ioc->name,
3461             facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
3462         return 0;
3463 }
3464
3465 /**
3466  * _base_send_ioc_init - send ioc_init to firmware
3467  * @ioc: per adapter object
3468  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3469  *
3470  * Returns 0 for success, non-zero for failure.
3471  */
3472 static int
3473 _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3474 {
3475         Mpi2IOCInitRequest_t mpi_request;
3476         Mpi2IOCInitReply_t mpi_reply;
3477         int r;
3478         struct timeval current_time;
3479         u16 ioc_status;
3480
3481         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3482             __func__));
3483
3484         memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
3485         mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
3486         mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
3487         mpi_request.VF_ID = 0; /* TODO */
3488         mpi_request.VP_ID = 0;
3489         mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
3490         mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
3491
3492         if (_base_is_controller_msix_enabled(ioc))
3493                 mpi_request.HostMSIxVectors = ioc->reply_queue_count;
3494         mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
3495         mpi_request.ReplyDescriptorPostQueueDepth =
3496             cpu_to_le16(ioc->reply_post_queue_depth);
3497         mpi_request.ReplyFreeQueueDepth =
3498             cpu_to_le16(ioc->reply_free_queue_depth);
3499
3500         mpi_request.SenseBufferAddressHigh =
3501             cpu_to_le32((u64)ioc->sense_dma >> 32);
3502         mpi_request.SystemReplyAddressHigh =
3503             cpu_to_le32((u64)ioc->reply_dma >> 32);
3504         mpi_request.SystemRequestFrameBaseAddress =
3505             cpu_to_le64((u64)ioc->request_dma);
3506         mpi_request.ReplyFreeQueueAddress =
3507             cpu_to_le64((u64)ioc->reply_free_dma);
3508         mpi_request.ReplyDescriptorPostQueueAddress =
3509             cpu_to_le64((u64)ioc->reply_post_free_dma);
3510
3511
3512         /* This time stamp specifies number of milliseconds
3513          * since epoch ~ midnight January 1, 1970.
3514          */
3515         do_gettimeofday(&current_time);
3516         mpi_request.TimeStamp = cpu_to_le64((u64)current_time.tv_sec * 1000 +
3517             (current_time.tv_usec / 1000));
3518
3519         if (ioc->logging_level & MPT_DEBUG_INIT) {
3520                 __le32 *mfp;
3521                 int i;
3522
3523                 mfp = (__le32 *)&mpi_request;
3524                 printk(KERN_INFO "\toffset:data\n");
3525                 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
3526                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3527                             le32_to_cpu(mfp[i]));
3528         }
3529
3530         r = _base_handshake_req_reply_wait(ioc,
3531             sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
3532             sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
3533             sleep_flag);
3534
3535         if (r != 0) {
3536                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3537                     ioc->name, __func__, r);
3538                 return r;
3539         }
3540
3541         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
3542         if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
3543             mpi_reply.IOCLogInfo) {
3544                 printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
3545                 r = -EIO;
3546         }
3547
3548         return 0;
3549 }
3550
3551 /**
3552  * mpt2sas_port_enable_done - command completion routine for port enable
3553  * @ioc: per adapter object
3554  * @smid: system request message index
3555  * @msix_index: MSIX table index supplied by the OS
3556  * @reply: reply message frame(lower 32bit addr)
3557  *
3558  * Return 1 meaning mf should be freed from _base_interrupt
3559  *        0 means the mf is freed from this function.
3560  */
3561 u8
3562 mpt2sas_port_enable_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3563         u32 reply)
3564 {
3565         MPI2DefaultReply_t *mpi_reply;
3566         u16 ioc_status;
3567
3568         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
3569         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
3570                 return 1;
3571
3572         if (ioc->port_enable_cmds.status == MPT2_CMD_NOT_USED)
3573                 return 1;
3574
3575         ioc->port_enable_cmds.status |= MPT2_CMD_COMPLETE;
3576         if (mpi_reply) {
3577                 ioc->port_enable_cmds.status |= MPT2_CMD_REPLY_VALID;
3578                 memcpy(ioc->port_enable_cmds.reply, mpi_reply,
3579                     mpi_reply->MsgLength*4);
3580         }
3581         ioc->port_enable_cmds.status &= ~MPT2_CMD_PENDING;
3582
3583         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3584
3585         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
3586                 ioc->port_enable_failed = 1;
3587
3588         if (ioc->is_driver_loading) {
3589                 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
3590                         mpt2sas_port_enable_complete(ioc);
3591                         return 1;
3592                 } else {
3593                         ioc->start_scan_failed = ioc_status;
3594                         ioc->start_scan = 0;
3595                         return 1;
3596                 }
3597         }
3598         complete(&ioc->port_enable_cmds.done);
3599         return 1;
3600 }
3601
3602
3603 /**
3604  * _base_send_port_enable - send port_enable(discovery stuff) to firmware
3605  * @ioc: per adapter object
3606  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3607  *
3608  * Returns 0 for success, non-zero for failure.
3609  */
3610 static int
3611 _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3612 {
3613         Mpi2PortEnableRequest_t *mpi_request;
3614         Mpi2PortEnableReply_t *mpi_reply;
3615         unsigned long timeleft;
3616         int r = 0;
3617         u16 smid;
3618         u16 ioc_status;
3619
3620         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3621
3622         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3623                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3624                     ioc->name, __func__);
3625                 return -EAGAIN;
3626         }
3627
3628         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3629         if (!smid) {
3630                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3631                     ioc->name, __func__);
3632                 return -EAGAIN;
3633         }
3634
3635         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3636         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3637         ioc->port_enable_cmds.smid = smid;
3638         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3639         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3640
3641         init_completion(&ioc->port_enable_cmds.done);
3642         mpt2sas_base_put_smid_default(ioc, smid);
3643         timeleft = wait_for_completion_timeout(&ioc->port_enable_cmds.done,
3644             300*HZ);
3645         if (!(ioc->port_enable_cmds.status & MPT2_CMD_COMPLETE)) {
3646                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3647                     ioc->name, __func__);
3648                 _debug_dump_mf(mpi_request,
3649                     sizeof(Mpi2PortEnableRequest_t)/4);
3650                 if (ioc->port_enable_cmds.status & MPT2_CMD_RESET)
3651                         r = -EFAULT;
3652                 else
3653                         r = -ETIME;
3654                 goto out;
3655         }
3656         mpi_reply = ioc->port_enable_cmds.reply;
3657
3658         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3659         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
3660                 printk(MPT2SAS_ERR_FMT "%s: failed with (ioc_status=0x%08x)\n",
3661                     ioc->name, __func__, ioc_status);
3662                 r = -EFAULT;
3663                 goto out;
3664         }
3665  out:
3666         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
3667         printk(MPT2SAS_INFO_FMT "port enable: %s\n", ioc->name, ((r == 0) ?
3668             "SUCCESS" : "FAILED"));
3669         return r;
3670 }
3671
3672 /**
3673  * mpt2sas_port_enable - initiate firmware discovery (don't wait for reply)
3674  * @ioc: per adapter object
3675  *
3676  * Returns 0 for success, non-zero for failure.
3677  */
3678 int
3679 mpt2sas_port_enable(struct MPT2SAS_ADAPTER *ioc)
3680 {
3681         Mpi2PortEnableRequest_t *mpi_request;
3682         u16 smid;
3683
3684         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3685
3686         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3687                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3688                     ioc->name, __func__);
3689                 return -EAGAIN;
3690         }
3691
3692         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3693         if (!smid) {
3694                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3695                     ioc->name, __func__);
3696                 return -EAGAIN;
3697         }
3698
3699         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3700         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3701         ioc->port_enable_cmds.smid = smid;
3702         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3703         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3704
3705         mpt2sas_base_put_smid_default(ioc, smid);
3706         return 0;
3707 }
3708
3709 /**
3710  * _base_determine_wait_on_discovery - desposition
3711  * @ioc: per adapter object
3712  *
3713  * Decide whether to wait on discovery to complete. Used to either
3714  * locate boot device, or report volumes ahead of physical devices.
3715  *
3716  * Returns 1 for wait, 0 for don't wait
3717  */
3718 static int
3719 _base_determine_wait_on_discovery(struct MPT2SAS_ADAPTER *ioc)
3720 {
3721         /* We wait for discovery to complete if IR firmware is loaded.
3722          * The sas topology events arrive before PD events, so we need time to
3723          * turn on the bit in ioc->pd_handles to indicate PD
3724          * Also, it maybe required to report Volumes ahead of physical
3725          * devices when MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING is set.
3726          */
3727         if (ioc->ir_firmware)
3728                 return 1;
3729
3730         /* if no Bios, then we don't need to wait */
3731         if (!ioc->bios_pg3.BiosVersion)
3732                 return 0;
3733
3734         /* Bios is present, then we drop down here.
3735          *
3736          * If there any entries in the Bios Page 2, then we wait
3737          * for discovery to complete.
3738          */
3739
3740         /* Current Boot Device */
3741         if ((ioc->bios_pg2.CurrentBootDeviceForm &
3742             MPI2_BIOSPAGE2_FORM_MASK) ==
3743             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3744         /* Request Boot Device */
3745            (ioc->bios_pg2.ReqBootDeviceForm &
3746             MPI2_BIOSPAGE2_FORM_MASK) ==
3747             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3748         /* Alternate Request Boot Device */
3749            (ioc->bios_pg2.ReqAltBootDeviceForm &
3750             MPI2_BIOSPAGE2_FORM_MASK) ==
3751             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED)
3752                 return 0;
3753
3754         return 1;
3755 }
3756
3757
3758 /**
3759  * _base_unmask_events - turn on notification for this event
3760  * @ioc: per adapter object
3761  * @event: firmware event
3762  *
3763  * The mask is stored in ioc->event_masks.
3764  */
3765 static void
3766 _base_unmask_events(struct MPT2SAS_ADAPTER *ioc, u16 event)
3767 {
3768         u32 desired_event;
3769
3770         if (event >= 128)
3771                 return;
3772
3773         desired_event = (1 << (event % 32));
3774
3775         if (event < 32)
3776                 ioc->event_masks[0] &= ~desired_event;
3777         else if (event < 64)
3778                 ioc->event_masks[1] &= ~desired_event;
3779         else if (event < 96)
3780                 ioc->event_masks[2] &= ~desired_event;
3781         else if (event < 128)
3782                 ioc->event_masks[3] &= ~desired_event;
3783 }
3784
3785 /**
3786  * _base_event_notification - send event notification
3787  * @ioc: per adapter object
3788  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3789  *
3790  * Returns 0 for success, non-zero for failure.
3791  */
3792 static int
3793 _base_event_notification(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3794 {
3795         Mpi2EventNotificationRequest_t *mpi_request;
3796         unsigned long timeleft;
3797         u16 smid;
3798         int r = 0;
3799         int i;
3800
3801         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3802             __func__));
3803
3804         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
3805                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3806                     ioc->name, __func__);
3807                 return -EAGAIN;
3808         }
3809
3810         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3811         if (!smid) {
3812                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3813                     ioc->name, __func__);
3814                 return -EAGAIN;
3815         }
3816         ioc->base_cmds.status = MPT2_CMD_PENDING;
3817         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3818         ioc->base_cmds.smid = smid;
3819         memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
3820         mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
3821         mpi_request->VF_ID = 0; /* TODO */
3822         mpi_request->VP_ID = 0;
3823         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
3824                 mpi_request->EventMasks[i] =
3825                     cpu_to_le32(ioc->event_masks[i]);
3826         init_completion(&ioc->base_cmds.done);
3827         mpt2sas_base_put_smid_default(ioc, smid);
3828         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
3829         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3830                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3831                     ioc->name, __func__);
3832                 _debug_dump_mf(mpi_request,
3833                     sizeof(Mpi2EventNotificationRequest_t)/4);
3834                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
3835                         r = -EFAULT;
3836                 else
3837                         r = -ETIME;
3838         } else
3839                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: complete\n",
3840                     ioc->name, __func__));
3841         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3842         return r;
3843 }
3844
3845 /**
3846  * mpt2sas_base_validate_event_type - validating event types
3847  * @ioc: per adapter object
3848  * @event: firmware event
3849  *
3850  * This will turn on firmware event notification when application
3851  * ask for that event. We don't mask events that are already enabled.
3852  */
3853 void
3854 mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type)
3855 {
3856         int i, j;
3857         u32 event_mask, desired_event;
3858         u8 send_update_to_fw;
3859
3860         for (i = 0, send_update_to_fw = 0; i <
3861             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
3862                 event_mask = ~event_type[i];
3863                 desired_event = 1;
3864                 for (j = 0; j < 32; j++) {
3865                         if (!(event_mask & desired_event) &&
3866                             (ioc->event_masks[i] & desired_event)) {
3867                                 ioc->event_masks[i] &= ~desired_event;
3868                                 send_update_to_fw = 1;
3869                         }
3870                         desired_event = (desired_event << 1);
3871                 }
3872         }
3873
3874         if (!send_update_to_fw)
3875                 return;
3876
3877         mutex_lock(&ioc->base_cmds.mutex);
3878         _base_event_notification(ioc, CAN_SLEEP);
3879         mutex_unlock(&ioc->base_cmds.mutex);
3880 }
3881
3882 /**
3883  * _base_diag_reset - the "big hammer" start of day reset
3884  * @ioc: per adapter object
3885  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3886  *
3887  * Returns 0 for success, non-zero for failure.
3888  */
3889 static int
3890 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3891 {
3892         u32 host_diagnostic;
3893         u32 ioc_state;
3894         u32 count;
3895         u32 hcb_size;
3896
3897         printk(MPT2SAS_INFO_FMT "sending diag reset !!\n", ioc->name);
3898         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "clear interrupts\n",
3899             ioc->name));
3900
3901         count = 0;
3902         do {
3903                 /* Write magic sequence to WriteSequence register
3904                  * Loop until in diagnostic mode
3905                  */
3906                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "write magic "
3907                     "sequence\n", ioc->name));
3908                 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3909                 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
3910                 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
3911                 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
3912                 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
3913                 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
3914                 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
3915
3916                 /* wait 100 msec */
3917                 if (sleep_flag == CAN_SLEEP)
3918                         msleep(100);
3919                 else
3920                         mdelay(100);
3921
3922                 if (count++ > 20)
3923                         goto out;
3924
3925                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3926                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "wrote magic "
3927                     "sequence: count(%d), host_diagnostic(0x%08x)\n",
3928                     ioc->name, count, host_diagnostic));
3929
3930         } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
3931
3932         hcb_size = readl(&ioc->chip->HCBSize);
3933
3934         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "diag reset: issued\n",
3935             ioc->name));
3936         writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
3937              &ioc->chip->HostDiagnostic);
3938
3939         /* don't access any registers for 50 milliseconds */
3940         msleep(50);
3941
3942         /* 300 second max wait */
3943         for (count = 0; count < 3000000 ; count++) {
3944
3945                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3946
3947                 if (host_diagnostic == 0xFFFFFFFF)
3948                         goto out;
3949                 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
3950                         break;
3951
3952                 /* wait 100 msec */
3953                 if (sleep_flag == CAN_SLEEP)
3954                         msleep(1);
3955                 else
3956                         mdelay(1);
3957         }
3958
3959         if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
3960
3961                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter "
3962                     "assuming the HCB Address points to good F/W\n",
3963                     ioc->name));
3964                 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
3965                 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
3966                 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
3967
3968                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT
3969                     "re-enable the HCDW\n", ioc->name));
3970                 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
3971                     &ioc->chip->HCBSize);
3972         }
3973
3974         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter\n",
3975             ioc->name));
3976         writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
3977             &ioc->chip->HostDiagnostic);
3978
3979         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "disable writes to the "
3980             "diagnostic register\n", ioc->name));
3981         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3982
3983         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "Wait for FW to go to the "
3984             "READY state\n", ioc->name));
3985         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
3986             sleep_flag);
3987         if (ioc_state) {
3988                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3989                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3990                 goto out;
3991         }
3992
3993         printk(MPT2SAS_INFO_FMT "diag reset: SUCCESS\n", ioc->name);
3994         return 0;
3995
3996  out:
3997         printk(MPT2SAS_ERR_FMT "diag reset: FAILED\n", ioc->name);
3998         return -EFAULT;
3999 }
4000
4001 /**
4002  * _base_make_ioc_ready - put controller in READY state
4003  * @ioc: per adapter object
4004  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4005  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4006  *
4007  * Returns 0 for success, non-zero for failure.
4008  */
4009 static int
4010 _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4011     enum reset_type type)
4012 {
4013         u32 ioc_state;
4014         int rc;
4015
4016         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4017             __func__));
4018
4019         if (ioc->pci_error_recovery)
4020                 return 0;
4021
4022         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4023         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: ioc_state(0x%08x)\n",
4024             ioc->name, __func__, ioc_state));
4025
4026         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
4027                 return 0;
4028
4029         if (ioc_state & MPI2_DOORBELL_USED) {
4030                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "unexpected doorbell "
4031                     "active!\n", ioc->name));
4032                 goto issue_diag_reset;
4033         }
4034
4035         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
4036                 mpt2sas_base_fault_info(ioc, ioc_state &
4037                     MPI2_DOORBELL_DATA_MASK);
4038                 goto issue_diag_reset;
4039         }
4040
4041         if (type == FORCE_BIG_HAMMER)
4042                 goto issue_diag_reset;
4043
4044         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
4045                 if (!(_base_send_ioc_reset(ioc,
4046                     MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP))) {
4047                         ioc->ioc_reset_count++;
4048                         return 0;
4049         }
4050
4051  issue_diag_reset:
4052         rc = _base_diag_reset(ioc, CAN_SLEEP);
4053         ioc->ioc_reset_count++;
4054         return rc;
4055 }
4056
4057 /**
4058  * _base_make_ioc_operational - put controller in OPERATIONAL state
4059  * @ioc: per adapter object
4060  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4061  *
4062  * Returns 0 for success, non-zero for failure.
4063  */
4064 static int
4065 _base_make_ioc_operational(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4066 {
4067         int r, i;
4068         unsigned long   flags;
4069         u32 reply_address;
4070         u16 smid;
4071         struct _tr_list *delayed_tr, *delayed_tr_next;
4072         u8 hide_flag;
4073         struct adapter_reply_queue *reply_q;
4074         long reply_post_free;
4075         u32 reply_post_free_sz;
4076
4077         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4078             __func__));
4079
4080         /* clean the delayed target reset list */
4081         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4082             &ioc->delayed_tr_list, list) {
4083                 list_del(&delayed_tr->list);
4084                 kfree(delayed_tr);
4085         }
4086
4087         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4088             &ioc->delayed_tr_volume_list, list) {
4089                 list_del(&delayed_tr->list);
4090                 kfree(delayed_tr);
4091         }
4092
4093         /* initialize the scsi lookup free list */
4094         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4095         INIT_LIST_HEAD(&ioc->free_list);
4096         smid = 1;
4097         for (i = 0; i < ioc->scsiio_depth; i++, smid++) {
4098                 INIT_LIST_HEAD(&ioc->scsi_lookup[i].chain_list);
4099                 ioc->scsi_lookup[i].cb_idx = 0xFF;
4100                 ioc->scsi_lookup[i].smid = smid;
4101                 ioc->scsi_lookup[i].scmd = NULL;
4102                 ioc->scsi_lookup[i].direct_io = 0;
4103                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
4104                     &ioc->free_list);
4105         }
4106
4107         /* hi-priority queue */
4108         INIT_LIST_HEAD(&ioc->hpr_free_list);
4109         smid = ioc->hi_priority_smid;
4110         for (i = 0; i < ioc->hi_priority_depth; i++, smid++) {
4111                 ioc->hpr_lookup[i].cb_idx = 0xFF;
4112                 ioc->hpr_lookup[i].smid = smid;
4113                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
4114                     &ioc->hpr_free_list);
4115         }
4116
4117         /* internal queue */
4118         INIT_LIST_HEAD(&ioc->internal_free_list);
4119         smid = ioc->internal_smid;
4120         for (i = 0; i < ioc->internal_depth; i++, smid++) {
4121                 ioc->internal_lookup[i].cb_idx = 0xFF;
4122                 ioc->internal_lookup[i].smid = smid;
4123                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
4124                     &ioc->internal_free_list);
4125         }
4126
4127         /* chain pool */
4128         INIT_LIST_HEAD(&ioc->free_chain_list);
4129         for (i = 0; i < ioc->chain_depth; i++)
4130                 list_add_tail(&ioc->chain_lookup[i].tracker_list,
4131                     &ioc->free_chain_list);
4132
4133         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4134
4135         /* initialize Reply Free Queue */
4136         for (i = 0, reply_address = (u32)ioc->reply_dma ;
4137             i < ioc->reply_free_queue_depth ; i++, reply_address +=
4138             ioc->reply_sz)
4139                 ioc->reply_free[i] = cpu_to_le32(reply_address);
4140
4141         /* initialize reply queues */
4142         if (ioc->is_driver_loading)
4143                 _base_assign_reply_queues(ioc);
4144
4145         /* initialize Reply Post Free Queue */
4146         reply_post_free = (long)ioc->reply_post_free;
4147         reply_post_free_sz = ioc->reply_post_queue_depth *
4148             sizeof(Mpi2DefaultReplyDescriptor_t);
4149         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4150                 reply_q->reply_post_host_index = 0;
4151                 reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *)
4152                     reply_post_free;
4153                 for (i = 0; i < ioc->reply_post_queue_depth; i++)
4154                         reply_q->reply_post_free[i].Words =
4155                                                         cpu_to_le64(ULLONG_MAX);
4156                 if (!_base_is_controller_msix_enabled(ioc))
4157                         goto skip_init_reply_post_free_queue;
4158                 reply_post_free += reply_post_free_sz;
4159         }
4160  skip_init_reply_post_free_queue:
4161
4162         r = _base_send_ioc_init(ioc, sleep_flag);
4163         if (r)
4164                 return r;
4165
4166         /* initialize reply free host index */
4167         ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
4168         writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
4169
4170         /* initialize reply post host index */
4171         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4172                 writel(reply_q->msix_index << MPI2_RPHI_MSIX_INDEX_SHIFT,
4173                     &ioc->chip->ReplyPostHostIndex);
4174                 if (!_base_is_controller_msix_enabled(ioc))
4175                         goto skip_init_reply_post_host_index;
4176         }
4177
4178  skip_init_reply_post_host_index:
4179
4180         _base_unmask_interrupts(ioc);
4181
4182         r = _base_event_notification(ioc, sleep_flag);
4183         if (r)
4184                 return r;
4185
4186         if (sleep_flag == CAN_SLEEP)
4187                 _base_static_config_pages(ioc);
4188
4189
4190         if (ioc->is_driver_loading) {
4191                 if (ioc->is_warpdrive && ioc->manu_pg10.OEMIdentifier
4192                     == 0x80) {
4193                         hide_flag = (u8) (
4194                             le32_to_cpu(ioc->manu_pg10.OEMSpecificFlags0) &
4195                             MFG_PAGE10_HIDE_SSDS_MASK);
4196                         if (hide_flag != MFG_PAGE10_HIDE_SSDS_MASK)
4197                                 ioc->mfg_pg10_hide_flag = hide_flag;
4198                 }
4199                 ioc->wait_for_discovery_to_complete =
4200                     _base_determine_wait_on_discovery(ioc);
4201                 return r; /* scan_start and scan_finished support */
4202         }
4203         r = _base_send_port_enable(ioc, sleep_flag);
4204         if (r)
4205                 return r;
4206
4207         return r;
4208 }
4209
4210 /**
4211  * mpt2sas_base_free_resources - free resources controller resources (io/irq/memap)
4212  * @ioc: per adapter object
4213  *
4214  * Return nothing.
4215  */
4216 void
4217 mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
4218 {
4219         struct pci_dev *pdev = ioc->pdev;
4220
4221         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4222             __func__));
4223
4224         _base_mask_interrupts(ioc);
4225         ioc->shost_recovery = 1;
4226         _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4227         ioc->shost_recovery = 0;
4228         _base_free_irq(ioc);
4229         _base_disable_msix(ioc);
4230         if (ioc->chip_phys)
4231                 iounmap(ioc->chip);
4232         ioc->chip_phys = 0;
4233         pci_release_selected_regions(ioc->pdev, ioc->bars);
4234         pci_disable_pcie_error_reporting(pdev);
4235         pci_disable_device(pdev);
4236         return;
4237 }
4238
4239 /**
4240  * mpt2sas_base_attach - attach controller instance
4241  * @ioc: per adapter object
4242  *
4243  * Returns 0 for success, non-zero for failure.
4244  */
4245 int
4246 mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
4247 {
4248         int r, i;
4249         int cpu_id, last_cpu_id = 0;
4250
4251         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4252             __func__));
4253
4254         /* setup cpu_msix_table */
4255         ioc->cpu_count = num_online_cpus();
4256         for_each_online_cpu(cpu_id)
4257                 last_cpu_id = cpu_id;
4258         ioc->cpu_msix_table_sz = last_cpu_id + 1;
4259         ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL);
4260         ioc->reply_queue_count = 1;
4261         if (!ioc->cpu_msix_table) {
4262                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation for "
4263                     "cpu_msix_table failed!!!\n", ioc->name));
4264                 r = -ENOMEM;
4265                 goto out_free_resources;
4266         }
4267
4268         if (ioc->is_warpdrive) {
4269                 ioc->reply_post_host_index = kcalloc(ioc->cpu_msix_table_sz,
4270                     sizeof(resource_size_t *), GFP_KERNEL);
4271                 if (!ioc->reply_post_host_index) {
4272                         dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation "
4273                                 "for cpu_msix_table failed!!!\n", ioc->name));
4274                         r = -ENOMEM;
4275                         goto out_free_resources;
4276                 }
4277         }
4278
4279         r = mpt2sas_base_map_resources(ioc);
4280         if (r)
4281                 goto out_free_resources;
4282
4283         if (ioc->is_warpdrive) {
4284                 ioc->reply_post_host_index[0] =
4285                     (resource_size_t *)&ioc->chip->ReplyPostHostIndex;
4286
4287                 for (i = 1; i < ioc->cpu_msix_table_sz; i++)
4288                         ioc->reply_post_host_index[i] = (resource_size_t *)
4289                         ((u8 *)&ioc->chip->Doorbell + (0x4000 + ((i - 1)
4290                         * 4)));
4291         }
4292
4293         pci_set_drvdata(ioc->pdev, ioc->shost);
4294         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
4295         if (r)
4296                 goto out_free_resources;
4297
4298         r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4299         if (r)
4300                 goto out_free_resources;
4301
4302         ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
4303             sizeof(struct mpt2sas_port_facts), GFP_KERNEL);
4304         if (!ioc->pfacts) {
4305                 r = -ENOMEM;
4306                 goto out_free_resources;
4307         }
4308
4309         for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
4310                 r = _base_get_port_facts(ioc, i, CAN_SLEEP);
4311                 if (r)
4312                         goto out_free_resources;
4313         }
4314
4315         r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
4316         if (r)
4317                 goto out_free_resources;
4318
4319         init_waitqueue_head(&ioc->reset_wq);
4320         /* allocate memory pd handle bitmask list */
4321         ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8);
4322         if (ioc->facts.MaxDevHandle % 8)
4323                 ioc->pd_handles_sz++;
4324         ioc->pd_handles = kzalloc(ioc->pd_handles_sz,
4325             GFP_KERNEL);
4326         if (!ioc->pd_handles) {
4327                 r = -ENOMEM;
4328                 goto out_free_resources;
4329         }
4330         ioc->blocking_handles = kzalloc(ioc->pd_handles_sz,
4331             GFP_KERNEL);
4332         if (!ioc->blocking_handles) {
4333                 r = -ENOMEM;
4334                 goto out_free_resources;
4335         }
4336         ioc->fwfault_debug = mpt2sas_fwfault_debug;
4337
4338         /* base internal command bits */
4339         mutex_init(&ioc->base_cmds.mutex);
4340         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4341         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
4342
4343         /* port_enable command bits */
4344         ioc->port_enable_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4345         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
4346
4347         /* transport internal command bits */
4348         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4349         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
4350         mutex_init(&ioc->transport_cmds.mutex);
4351
4352         /* scsih internal command bits */
4353         ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4354         ioc->scsih_cmds.status = MPT2_CMD_NOT_USED;
4355         mutex_init(&ioc->scsih_cmds.mutex);
4356
4357         /* task management internal command bits */
4358         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4359         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
4360         mutex_init(&ioc->tm_cmds.mutex);
4361
4362         /* config page internal command bits */
4363         ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4364         ioc->config_cmds.status = MPT2_CMD_NOT_USED;
4365         mutex_init(&ioc->config_cmds.mutex);
4366
4367         /* ctl module internal command bits */
4368         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4369         ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
4370         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
4371         mutex_init(&ioc->ctl_cmds.mutex);
4372
4373         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4374             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4375             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply ||
4376             !ioc->ctl_cmds.sense) {
4377                 r = -ENOMEM;
4378                 goto out_free_resources;
4379         }
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                 r = -ENOMEM;
4385                 goto out_free_resources;
4386         }
4387
4388         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4389                 ioc->event_masks[i] = -1;
4390
4391         /* here we enable the events we care about */
4392         _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
4393         _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
4394         _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
4395         _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4396         _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
4397         _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
4398         _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
4399         _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
4400         _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
4401         _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
4402         r = _base_make_ioc_operational(ioc, CAN_SLEEP);
4403         if (r)
4404                 goto out_free_resources;
4405
4406         ioc->non_operational_loop = 0;
4407
4408         return 0;
4409
4410  out_free_resources:
4411
4412         ioc->remove_host = 1;
4413         mpt2sas_base_free_resources(ioc);
4414         _base_release_memory_pools(ioc);
4415         pci_set_drvdata(ioc->pdev, NULL);
4416         kfree(ioc->cpu_msix_table);
4417         if (ioc->is_warpdrive)
4418                 kfree(ioc->reply_post_host_index);
4419         kfree(ioc->pd_handles);
4420         kfree(ioc->blocking_handles);
4421         kfree(ioc->tm_cmds.reply);
4422         kfree(ioc->transport_cmds.reply);
4423         kfree(ioc->scsih_cmds.reply);
4424         kfree(ioc->config_cmds.reply);
4425         kfree(ioc->base_cmds.reply);
4426         kfree(ioc->port_enable_cmds.reply);
4427         kfree(ioc->ctl_cmds.reply);
4428         kfree(ioc->ctl_cmds.sense);
4429         kfree(ioc->pfacts);
4430         ioc->ctl_cmds.reply = NULL;
4431         ioc->base_cmds.reply = NULL;
4432         ioc->tm_cmds.reply = NULL;
4433         ioc->scsih_cmds.reply = NULL;
4434         ioc->transport_cmds.reply = NULL;
4435         ioc->config_cmds.reply = NULL;
4436         ioc->pfacts = NULL;
4437         return r;
4438 }
4439
4440
4441 /**
4442  * mpt2sas_base_detach - remove controller instance
4443  * @ioc: per adapter object
4444  *
4445  * Return nothing.
4446  */
4447 void
4448 mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc)
4449 {
4450
4451         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4452             __func__));
4453
4454         mpt2sas_base_stop_watchdog(ioc);
4455         mpt2sas_base_free_resources(ioc);
4456         _base_release_memory_pools(ioc);
4457         pci_set_drvdata(ioc->pdev, NULL);
4458         kfree(ioc->cpu_msix_table);
4459         if (ioc->is_warpdrive)
4460                 kfree(ioc->reply_post_host_index);
4461         kfree(ioc->pd_handles);
4462         kfree(ioc->blocking_handles);
4463         kfree(ioc->pfacts);
4464         kfree(ioc->ctl_cmds.reply);
4465         kfree(ioc->ctl_cmds.sense);
4466         kfree(ioc->base_cmds.reply);
4467         kfree(ioc->port_enable_cmds.reply);
4468         kfree(ioc->tm_cmds.reply);
4469         kfree(ioc->transport_cmds.reply);
4470         kfree(ioc->scsih_cmds.reply);
4471         kfree(ioc->config_cmds.reply);
4472 }
4473
4474 /**
4475  * _base_reset_handler - reset callback handler (for base)
4476  * @ioc: per adapter object
4477  * @reset_phase: phase
4478  *
4479  * The handler for doing any required cleanup or initialization.
4480  *
4481  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
4482  * MPT2_IOC_DONE_RESET
4483  *
4484  * Return nothing.
4485  */
4486 static void
4487 _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
4488 {
4489         mpt2sas_scsih_reset_handler(ioc, reset_phase);
4490         mpt2sas_ctl_reset_handler(ioc, reset_phase);
4491         switch (reset_phase) {
4492         case MPT2_IOC_PRE_RESET:
4493                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4494                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
4495                 break;
4496         case MPT2_IOC_AFTER_RESET:
4497                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4498                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
4499                 if (ioc->transport_cmds.status & MPT2_CMD_PENDING) {
4500                         ioc->transport_cmds.status |= MPT2_CMD_RESET;
4501                         mpt2sas_base_free_smid(ioc, ioc->transport_cmds.smid);
4502                         complete(&ioc->transport_cmds.done);
4503                 }
4504                 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
4505                         ioc->base_cmds.status |= MPT2_CMD_RESET;
4506                         mpt2sas_base_free_smid(ioc, ioc->base_cmds.smid);
4507                         complete(&ioc->base_cmds.done);
4508                 }
4509                 if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
4510                         ioc->port_enable_failed = 1;
4511                         ioc->port_enable_cmds.status |= MPT2_CMD_RESET;
4512                         mpt2sas_base_free_smid(ioc, ioc->port_enable_cmds.smid);
4513                         if (ioc->is_driver_loading) {
4514                                 ioc->start_scan_failed =
4515                                     MPI2_IOCSTATUS_INTERNAL_ERROR;
4516                                 ioc->start_scan = 0;
4517                                 ioc->port_enable_cmds.status =
4518                                                 MPT2_CMD_NOT_USED;
4519                         } else
4520                                 complete(&ioc->port_enable_cmds.done);
4521
4522                 }
4523                 if (ioc->config_cmds.status & MPT2_CMD_PENDING) {
4524                         ioc->config_cmds.status |= MPT2_CMD_RESET;
4525                         mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid);
4526                         ioc->config_cmds.smid = USHRT_MAX;
4527                         complete(&ioc->config_cmds.done);
4528                 }
4529                 break;
4530         case MPT2_IOC_DONE_RESET:
4531                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4532                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
4533                 break;
4534         }
4535 }
4536
4537 /**
4538  * _wait_for_commands_to_complete - reset controller
4539  * @ioc: Pointer to MPT_ADAPTER structure
4540  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4541  *
4542  * This function waiting(3s) for all pending commands to complete
4543  * prior to putting controller in reset.
4544  */
4545 static void
4546 _wait_for_commands_to_complete(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4547 {
4548         u32 ioc_state;
4549         unsigned long flags;
4550         u16 i;
4551
4552         ioc->pending_io_count = 0;
4553         if (sleep_flag != CAN_SLEEP)
4554                 return;
4555
4556         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4557         if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
4558                 return;
4559
4560         /* pending command count */
4561         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4562         for (i = 0; i < ioc->scsiio_depth; i++)
4563                 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
4564                         ioc->pending_io_count++;
4565         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4566
4567         if (!ioc->pending_io_count)
4568                 return;
4569
4570         /* wait for pending commands to complete */
4571         wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ);
4572 }
4573
4574 /**
4575  * mpt2sas_base_hard_reset_handler - reset controller
4576  * @ioc: Pointer to MPT_ADAPTER structure
4577  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4578  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4579  *
4580  * Returns 0 for success, non-zero for failure.
4581  */
4582 int
4583 mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4584     enum reset_type type)
4585 {
4586         int r;
4587         unsigned long flags;
4588
4589         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
4590             __func__));
4591
4592         if (ioc->pci_error_recovery) {
4593                 printk(MPT2SAS_ERR_FMT "%s: pci error recovery reset\n",
4594                     ioc->name, __func__);
4595                 r = 0;
4596                 goto out_unlocked;
4597         }
4598
4599         if (mpt2sas_fwfault_debug)
4600                 mpt2sas_halt_firmware(ioc);
4601
4602         /* TODO - What we really should be doing is pulling
4603          * out all the code associated with NO_SLEEP; its never used.
4604          * That is legacy code from mpt fusion driver, ported over.
4605          * I will leave this BUG_ON here for now till its been resolved.
4606          */
4607         BUG_ON(sleep_flag == NO_SLEEP);
4608
4609         /* wait for an active reset in progress to complete */
4610         if (!mutex_trylock(&ioc->reset_in_progress_mutex)) {
4611                 do {
4612                         ssleep(1);
4613                 } while (ioc->shost_recovery == 1);
4614                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4615                     __func__));
4616                 return ioc->ioc_reset_in_progress_status;
4617         }
4618
4619         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4620         ioc->shost_recovery = 1;
4621         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4622
4623         _base_reset_handler(ioc, MPT2_IOC_PRE_RESET);
4624         _wait_for_commands_to_complete(ioc, sleep_flag);
4625         _base_mask_interrupts(ioc);
4626         r = _base_make_ioc_ready(ioc, sleep_flag, type);
4627         if (r)
4628                 goto out;
4629         _base_reset_handler(ioc, MPT2_IOC_AFTER_RESET);
4630
4631         /* If this hard reset is called while port enable is active, then
4632          * there is no reason to call make_ioc_operational
4633          */
4634         if (ioc->is_driver_loading && ioc->port_enable_failed) {
4635                 ioc->remove_host = 1;
4636                 r = -EFAULT;
4637                 goto out;
4638         }
4639         r = _base_make_ioc_operational(ioc, sleep_flag);
4640         if (!r)
4641                 _base_reset_handler(ioc, MPT2_IOC_DONE_RESET);
4642  out:
4643         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: %s\n",
4644             ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
4645
4646         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4647         ioc->ioc_reset_in_progress_status = r;
4648         ioc->shost_recovery = 0;
4649         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4650         mutex_unlock(&ioc->reset_in_progress_mutex);
4651
4652  out_unlocked:
4653         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4654             __func__));
4655         return r;
4656 }