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) 2007-2013  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_locked(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  * Returns void.
 772  */
 773 static void
 774 _base_async_event(struct MPT2SAS_ADAPTER *ioc, u8 msix_index, u32 reply)
 775 {
 776         Mpi2EventNotificationReply_t *mpi_reply;
 777         Mpi2EventAckRequest_t *ack_request;
 778         u16 smid;
 779
 780         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 781         if (!mpi_reply)
 782                 return;
 783         if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION)
 784                 return;
 785 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 786         _base_display_event_data(ioc, mpi_reply);
 787 #endif
 788         if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED))
 789                 goto out;
 790         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
 791         if (!smid) {
 792                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
 793                     ioc->name, __func__);
 794                 goto out;
 795         }
 796
 797         ack_request = mpt2sas_base_get_msg_frame(ioc, smid);
 798         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
 799         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
 800         ack_request->Event = mpi_reply->Event;
 801         ack_request->EventContext = mpi_reply->EventContext;
 802         ack_request->VF_ID = 0;  /* TODO */
 803         ack_request->VP_ID = 0;
 804         mpt2sas_base_put_smid_default(ioc, smid);
 805
 806  out:
 807
 808         /* scsih callback handler */
 809         mpt2sas_scsih_event_callback(ioc, msix_index, reply);
 810
 811         /* ctl callback handler */
 812         mpt2sas_ctl_event_callback(ioc, msix_index, reply);
 813
 814         return;
 815 }
 816
 817 /**
 818  * _base_get_cb_idx - obtain the callback index
 819  * @ioc: per adapter object
 820  * @smid: system request message index
 821  *
 822  * Return callback index.
 823  */
 824 static u8
 825 _base_get_cb_idx(struct MPT2SAS_ADAPTER *ioc, u16 smid)
 826 {
 827         int i;
 828         u8 cb_idx;
 829
 830         if (smid < ioc->hi_priority_smid) {
 831                 i = smid - 1;
 832                 cb_idx = ioc->scsi_lookup[i].cb_idx;
 833         } else if (smid < ioc->internal_smid) {
 834                 i = smid - ioc->hi_priority_smid;
 835                 cb_idx = ioc->hpr_lookup[i].cb_idx;
 836         } else if (smid <= ioc->hba_queue_depth) {
 837                 i = smid - ioc->internal_smid;
 838                 cb_idx = ioc->internal_lookup[i].cb_idx;
 839         } else
 840                 cb_idx = 0xFF;
 841         return cb_idx;
 842 }
 843
 844 /**
 845  * _base_mask_interrupts - disable interrupts
 846  * @ioc: per adapter object
 847  *
 848  * Disabling ResetIRQ, Reply and Doorbell Interrupts
 849  *
 850  * Return nothing.
 851  */
 852 static void
 853 _base_mask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 854 {
 855         u32 him_register;
 856
 857         ioc->mask_interrupts = 1;
 858         him_register = readl(&ioc->chip->HostInterruptMask);
 859         him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK;
 860         writel(him_register, &ioc->chip->HostInterruptMask);
 861         readl(&ioc->chip->HostInterruptMask);
 862 }
 863
 864 /**
 865  * _base_unmask_interrupts - enable interrupts
 866  * @ioc: per adapter object
 867  *
 868  * Enabling only Reply Interrupts
 869  *
 870  * Return nothing.
 871  */
 872 static void
 873 _base_unmask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 874 {
 875         u32 him_register;
 876
 877         him_register = readl(&ioc->chip->HostInterruptMask);
 878         him_register &= ~MPI2_HIM_RIM;
 879         writel(him_register, &ioc->chip->HostInterruptMask);
 880         ioc->mask_interrupts = 0;
 881 }
 882
 883 union reply_descriptor {
 884         u64 word;
 885         struct {
 886                 u32 low;
 887                 u32 high;
 888         } u;
 889 };
 890
 891 /**
 892  * _base_interrupt - MPT adapter (IOC) specific interrupt handler.
 893  * @irq: irq number (not used)
 894  * @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure
 895  * @r: pt_regs pointer (not used)
 896  *
 897  * Return IRQ_HANDLE if processed, else IRQ_NONE.
 898  */
 899 static irqreturn_t
 900 _base_interrupt(int irq, void *bus_id)
 901 {
 902         struct adapter_reply_queue *reply_q = bus_id;
 903         union reply_descriptor rd;
 904         u32 completed_cmds;
 905         u8 request_desript_type;
 906         u16 smid;
 907         u8 cb_idx;
 908         u32 reply;
 909         u8 msix_index = reply_q->msix_index;
 910         struct MPT2SAS_ADAPTER *ioc = reply_q->ioc;
 911         Mpi2ReplyDescriptorsUnion_t *rpf;
 912         u8 rc;
 913
 914         if (ioc->mask_interrupts)
 915                 return IRQ_NONE;
 916
 917         if (!atomic_add_unless(&reply_q->busy, 1, 1))
 918                 return IRQ_NONE;
 919
 920         rpf = &reply_q->reply_post_free[reply_q->reply_post_host_index];
 921         request_desript_type = rpf->Default.ReplyFlags
 922              & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 923         if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) {
 924                 atomic_dec(&reply_q->busy);
 925                 return IRQ_NONE;
 926         }
 927
 928         completed_cmds = 0;
 929         cb_idx = 0xFF;
 930         do {
 931                 rd.word = le64_to_cpu(rpf->Words);
 932                 if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX)
 933                         goto out;
 934                 reply = 0;
 935                 smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1);
 936                 if (request_desript_type ==
 937                     MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
 938                         reply = le32_to_cpu
 939                                 (rpf->AddressReply.ReplyFrameAddress);
 940                         if (reply > ioc->reply_dma_max_address ||
 941                             reply < ioc->reply_dma_min_address)
 942                                 reply = 0;
 943                 } else if (request_desript_type ==
 944                     MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER)
 945                         goto next;
 946                 else if (request_desript_type ==
 947                     MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS)
 948                         goto next;
 949                 if (smid) {
 950                         cb_idx = _base_get_cb_idx(ioc, smid);
 951                 if ((likely(cb_idx < MPT_MAX_CALLBACKS))
 952                             && (likely(mpt_callbacks[cb_idx] != NULL))) {
 953                                 rc = mpt_callbacks[cb_idx](ioc, smid,
 954                                     msix_index, reply);
 955                         if (reply)
 956                                 _base_display_reply_info(ioc, smid,
 957                                     msix_index, reply);
 958                         if (rc)
 959                                 mpt2sas_base_free_smid(ioc, smid);
 960                         }
 961                 }
 962                 if (!smid)
 963                         _base_async_event(ioc, msix_index, reply);
 964
 965                 /* reply free queue handling */
 966                 if (reply) {
 967                         ioc->reply_free_host_index =
 968                             (ioc->reply_free_host_index ==
 969                             (ioc->reply_free_queue_depth - 1)) ?
 970                             0 : ioc->reply_free_host_index + 1;
 971                         ioc->reply_free[ioc->reply_free_host_index] =
 972                             cpu_to_le32(reply);
 973                         wmb();
 974                         writel(ioc->reply_free_host_index,
 975                             &ioc->chip->ReplyFreeHostIndex);
 976                 }
 977
 978  next:
 979
 980                 rpf->Words = cpu_to_le64(ULLONG_MAX);
 981                 reply_q->reply_post_host_index =
 982                     (reply_q->reply_post_host_index ==
 983                     (ioc->reply_post_queue_depth - 1)) ? 0 :
 984                     reply_q->reply_post_host_index + 1;
 985                 request_desript_type =
 986                     reply_q->reply_post_free[reply_q->reply_post_host_index].
 987                     Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 988                 completed_cmds++;
 989                 if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
 990                         goto out;
 991                 if (!reply_q->reply_post_host_index)
 992                         rpf = reply_q->reply_post_free;
 993                 else
 994                         rpf++;
 995         } while (1);
 996
 997  out:
 998
 999         if (!completed_cmds) {
1000                 atomic_dec(&reply_q->busy);
1001                 return IRQ_NONE;
1002         }
1003         wmb();
1004         if (ioc->is_warpdrive) {
1005                 writel(reply_q->reply_post_host_index,
1006                 ioc->reply_post_host_index[msix_index]);
1007                 atomic_dec(&reply_q->busy);
1008                 return IRQ_HANDLED;
1009         }
1010         writel(reply_q->reply_post_host_index | (msix_index <<
1011             MPI2_RPHI_MSIX_INDEX_SHIFT), &ioc->chip->ReplyPostHostIndex);
1012         atomic_dec(&reply_q->busy);
1013         return IRQ_HANDLED;
1014 }
1015
1016 /**
1017  * _base_is_controller_msix_enabled - is controller support muli-reply queues
1018  * @ioc: per adapter object
1019  *
1020  */
1021 static inline int
1022 _base_is_controller_msix_enabled(struct MPT2SAS_ADAPTER *ioc)
1023 {
1024         return (ioc->facts.IOCCapabilities &
1025             MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable;
1026 }
1027
1028 /**
1029  * mpt2sas_base_flush_reply_queues - flushing the MSIX reply queues
1030  * @ioc: per adapter object
1031  * Context: ISR conext
1032  *
1033  * Called when a Task Management request has completed. We want
1034  * to flush the other reply queues so all the outstanding IO has been
1035  * completed back to OS before we process the TM completetion.
1036  *
1037  * Return nothing.
1038  */
1039 void
1040 mpt2sas_base_flush_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1041 {
1042         struct adapter_reply_queue *reply_q;
1043
1044         /* If MSIX capability is turned off
1045          * then multi-queues are not enabled
1046          */
1047         if (!_base_is_controller_msix_enabled(ioc))
1048                 return;
1049
1050         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
1051                 if (ioc->shost_recovery)
1052                         return;
1053                 /* TMs are on msix_index == 0 */
1054                 if (reply_q->msix_index == 0)
1055                         continue;
1056                 _base_interrupt(reply_q->vector, (void *)reply_q);
1057         }
1058 }
1059
1060 /**
1061  * mpt2sas_base_release_callback_handler - clear interrupt callback handler
1062  * @cb_idx: callback index
1063  *
1064  * Return nothing.
1065  */
1066 void
1067 mpt2sas_base_release_callback_handler(u8 cb_idx)
1068 {
1069         mpt_callbacks[cb_idx] = NULL;
1070 }
1071
1072 /**
1073  * mpt2sas_base_register_callback_handler - obtain index for the interrupt callback handler
1074  * @cb_func: callback function
1075  *
1076  * Returns cb_func.
1077  */
1078 u8
1079 mpt2sas_base_register_callback_handler(MPT_CALLBACK cb_func)
1080 {
1081         u8 cb_idx;
1082
1083         for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--)
1084                 if (mpt_callbacks[cb_idx] == NULL)
1085                         break;
1086
1087         mpt_callbacks[cb_idx] = cb_func;
1088         return cb_idx;
1089 }
1090
1091 /**
1092  * mpt2sas_base_initialize_callback_handler - initialize the interrupt callback handler
1093  *
1094  * Return nothing.
1095  */
1096 void
1097 mpt2sas_base_initialize_callback_handler(void)
1098 {
1099         u8 cb_idx;
1100
1101         for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++)
1102                 mpt2sas_base_release_callback_handler(cb_idx);
1103 }
1104
1105 /**
1106  * mpt2sas_base_build_zero_len_sge - build zero length sg entry
1107  * @ioc: per adapter object
1108  * @paddr: virtual address for SGE
1109  *
1110  * Create a zero length scatter gather entry to insure the IOCs hardware has
1111  * something to use if the target device goes brain dead and tries
1112  * to send data even when none is asked for.
1113  *
1114  * Return nothing.
1115  */
1116 void
1117 mpt2sas_base_build_zero_len_sge(struct MPT2SAS_ADAPTER *ioc, void *paddr)
1118 {
1119         u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT |
1120             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST |
1121             MPI2_SGE_FLAGS_SIMPLE_ELEMENT) <<
1122             MPI2_SGE_FLAGS_SHIFT);
1123         ioc->base_add_sg_single(paddr, flags_length, -1);
1124 }
1125
1126 /**
1127  * _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr.
1128  * @paddr: virtual address for SGE
1129  * @flags_length: SGE flags and data transfer length
1130  * @dma_addr: Physical address
1131  *
1132  * Return nothing.
1133  */
1134 static void
1135 _base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1136 {
1137         Mpi2SGESimple32_t *sgel = paddr;
1138
1139         flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING |
1140             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1141         sgel->FlagsLength = cpu_to_le32(flags_length);
1142         sgel->Address = cpu_to_le32(dma_addr);
1143 }
1144
1145
1146 /**
1147  * _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr.
1148  * @paddr: virtual address for SGE
1149  * @flags_length: SGE flags and data transfer length
1150  * @dma_addr: Physical address
1151  *
1152  * Return nothing.
1153  */
1154 static void
1155 _base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1156 {
1157         Mpi2SGESimple64_t *sgel = paddr;
1158
1159         flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
1160             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1161         sgel->FlagsLength = cpu_to_le32(flags_length);
1162         sgel->Address = cpu_to_le64(dma_addr);
1163 }
1164
1165 #define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10))
1166
1167 /**
1168  * _base_config_dma_addressing - set dma addressing
1169  * @ioc: per adapter object
1170  * @pdev: PCI device struct
1171  *
1172  * Returns 0 for success, non-zero for failure.
1173  */
1174 static int
1175 _base_config_dma_addressing(struct MPT2SAS_ADAPTER *ioc, struct pci_dev *pdev)
1176 {
1177         struct sysinfo s;
1178         char *desc = NULL;
1179
1180         if (sizeof(dma_addr_t) > 4) {
1181                 const uint64_t required_mask =
1182                     dma_get_required_mask(&pdev->dev);
1183                 if ((required_mask > DMA_BIT_MASK(32)) && !pci_set_dma_mask(pdev,
1184                     DMA_BIT_MASK(64)) && !pci_set_consistent_dma_mask(pdev,
1185                     DMA_BIT_MASK(64))) {
1186                         ioc->base_add_sg_single = &_base_add_sg_single_64;
1187                         ioc->sge_size = sizeof(Mpi2SGESimple64_t);
1188                         desc = "64";
1189                         goto out;
1190                 }
1191         }
1192
1193         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
1194             && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1195                 ioc->base_add_sg_single = &_base_add_sg_single_32;
1196                 ioc->sge_size = sizeof(Mpi2SGESimple32_t);
1197                 desc = "32";
1198         } else
1199                 return -ENODEV;
1200
1201  out:
1202         si_meminfo(&s);
1203         printk(MPT2SAS_INFO_FMT "%s BIT PCI BUS DMA ADDRESSING SUPPORTED, "
1204             "total mem (%ld kB)\n", ioc->name, desc, convert_to_kb(s.totalram));
1205
1206         return 0;
1207 }
1208
1209 /**
1210  * _base_check_enable_msix - checks MSIX capabable.
1211  * @ioc: per adapter object
1212  *
1213  * Check to see if card is capable of MSIX, and set number
1214  * of available msix vectors
1215  */
1216 static int
1217 _base_check_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1218 {
1219         int base;
1220         u16 message_control;
1221
1222
1223         /* Check whether controller SAS2008 B0 controller,
1224            if it is SAS2008 B0 controller use IO-APIC instead of MSIX */
1225         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 &&
1226             ioc->pdev->revision == 0x01) {
1227                 return -EINVAL;
1228         }
1229
1230         base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
1231         if (!base) {
1232                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "msix not "
1233                     "supported\n", ioc->name));
1234                 return -EINVAL;
1235         }
1236
1237         /* get msix vector count */
1238         /* NUMA_IO not supported for older controllers */
1239         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2004 ||
1240             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 ||
1241             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_1 ||
1242             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_2 ||
1243             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_3 ||
1244             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_1 ||
1245             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_2)
1246                 ioc->msix_vector_count = 1;
1247         else {
1248                 pci_read_config_word(ioc->pdev, base + 2, &message_control);
1249                 ioc->msix_vector_count = (message_control & 0x3FF) + 1;
1250         }
1251         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "msix is supported, "
1252             "vector_count(%d)\n", ioc->name, ioc->msix_vector_count));
1253
1254         return 0;
1255 }
1256
1257 /**
1258  * _base_free_irq - free irq
1259  * @ioc: per adapter object
1260  *
1261  * Freeing respective reply_queue from the list.
1262  */
1263 static void
1264 _base_free_irq(struct MPT2SAS_ADAPTER *ioc)
1265 {
1266         struct adapter_reply_queue *reply_q, *next;
1267
1268         if (list_empty(&ioc->reply_queue_list))
1269                 return;
1270
1271         list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) {
1272                 list_del(&reply_q->list);
1273                 synchronize_irq(reply_q->vector);
1274                 free_irq(reply_q->vector, reply_q);
1275                 kfree(reply_q);
1276         }
1277 }
1278
1279 /**
1280  * _base_request_irq - request irq
1281  * @ioc: per adapter object
1282  * @index: msix index into vector table
1283  * @vector: irq vector
1284  *
1285  * Inserting respective reply_queue into the list.
1286  */
1287 static int
1288 _base_request_irq(struct MPT2SAS_ADAPTER *ioc, u8 index, u32 vector)
1289 {
1290         struct adapter_reply_queue *reply_q;
1291         int r;
1292
1293         reply_q =  kzalloc(sizeof(struct adapter_reply_queue), GFP_KERNEL);
1294         if (!reply_q) {
1295                 printk(MPT2SAS_ERR_FMT "unable to allocate memory %d!\n",
1296                     ioc->name, (int)sizeof(struct adapter_reply_queue));
1297                 return -ENOMEM;
1298         }
1299         reply_q->ioc = ioc;
1300         reply_q->msix_index = index;
1301         reply_q->vector = vector;
1302         atomic_set(&reply_q->busy, 0);
1303         if (ioc->msix_enable)
1304                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d-msix%d",
1305                     MPT2SAS_DRIVER_NAME, ioc->id, index);
1306         else
1307                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d",
1308                     MPT2SAS_DRIVER_NAME, ioc->id);
1309         r = request_irq(vector, _base_interrupt, IRQF_SHARED, reply_q->name,
1310             reply_q);
1311         if (r) {
1312                 printk(MPT2SAS_ERR_FMT "unable to allocate interrupt %d!\n",
1313                     reply_q->name, vector);
1314                 kfree(reply_q);
1315                 return -EBUSY;
1316         }
1317
1318         INIT_LIST_HEAD(&reply_q->list);
1319         list_add_tail(&reply_q->list, &ioc->reply_queue_list);
1320         return 0;
1321 }
1322
1323 /**
1324  * _base_assign_reply_queues - assigning msix index for each cpu
1325  * @ioc: per adapter object
1326  *
1327  * The enduser would need to set the affinity via /proc/irq/#/smp_affinity
1328  *
1329  * It would nice if we could call irq_set_affinity, however it is not
1330  * an exported symbol
1331  */
1332 static void
1333 _base_assign_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1334 {
1335         struct adapter_reply_queue *reply_q;
1336         int cpu_id;
1337         int cpu_grouping, loop, grouping, grouping_mod;
1338
1339         if (!_base_is_controller_msix_enabled(ioc))
1340                 return;
1341
1342         memset(ioc->cpu_msix_table, 0, ioc->cpu_msix_table_sz);
1343         /* when there are more cpus than available msix vectors,
1344          * then group cpus togeather on same irq
1345          */
1346         if (ioc->cpu_count > ioc->msix_vector_count) {
1347                 grouping = ioc->cpu_count / ioc->msix_vector_count;
1348                 grouping_mod = ioc->cpu_count % ioc->msix_vector_count;
1349                 if (grouping < 2 || (grouping == 2 && !grouping_mod))
1350                         cpu_grouping = 2;
1351                 else if (grouping < 4 || (grouping == 4 && !grouping_mod))
1352                         cpu_grouping = 4;
1353                 else if (grouping < 8 || (grouping == 8 && !grouping_mod))
1354                         cpu_grouping = 8;
1355                 else
1356                         cpu_grouping = 16;
1357         } else
1358                 cpu_grouping = 0;
1359
1360         loop = 0;
1361         reply_q = list_entry(ioc->reply_queue_list.next,
1362              struct adapter_reply_queue, list);
1363         for_each_online_cpu(cpu_id) {
1364                 if (!cpu_grouping) {
1365                         ioc->cpu_msix_table[cpu_id] = reply_q->msix_index;
1366                         reply_q = list_entry(reply_q->list.next,
1367                             struct adapter_reply_queue, list);
1368                 } else {
1369                         if (loop < cpu_grouping) {
1370                                 ioc->cpu_msix_table[cpu_id] =
1371                                         reply_q->msix_index;
1372                                 loop++;
1373                         } else {
1374                                 reply_q = list_entry(reply_q->list.next,
1375                                     struct adapter_reply_queue, list);
1376                                 ioc->cpu_msix_table[cpu_id] =
1377                                         reply_q->msix_index;
1378                                 loop = 1;
1379                         }
1380                 }
1381         }
1382 }
1383
1384 /**
1385  * _base_disable_msix - disables msix
1386  * @ioc: per adapter object
1387  *
1388  */
1389 static void
1390 _base_disable_msix(struct MPT2SAS_ADAPTER *ioc)
1391 {
1392         if (ioc->msix_enable) {
1393                 pci_disable_msix(ioc->pdev);
1394                 ioc->msix_enable = 0;
1395         }
1396 }
1397
1398 /**
1399  * _base_enable_msix - enables msix, failback to io_apic
1400  * @ioc: per adapter object
1401  *
1402  */
1403 static int
1404 _base_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1405 {
1406         struct msix_entry *entries, *a;
1407         int r;
1408         int i;
1409         u8 try_msix = 0;
1410
1411         if (msix_disable == -1 || msix_disable == 0)
1412                 try_msix = 1;
1413
1414         if (!try_msix)
1415                 goto try_ioapic;
1416
1417         if (_base_check_enable_msix(ioc) != 0)
1418                 goto try_ioapic;
1419
1420         ioc->reply_queue_count = min_t(int, ioc->cpu_count,
1421             ioc->msix_vector_count);
1422
1423         entries = kcalloc(ioc->reply_queue_count, sizeof(struct msix_entry),
1424             GFP_KERNEL);
1425         if (!entries) {
1426                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "kcalloc "
1427                     "failed @ at %s:%d/%s() !!!\n", ioc->name, __FILE__,
1428                     __LINE__, __func__));
1429                 goto try_ioapic;
1430         }
1431
1432         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++)
1433                 a->entry = i;
1434
1435         r = pci_enable_msix(ioc->pdev, entries, ioc->reply_queue_count);
1436         if (r) {
1437                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "pci_enable_msix "
1438                     "failed (r=%d) !!!\n", ioc->name, r));
1439                 kfree(entries);
1440                 goto try_ioapic;
1441         }
1442
1443         ioc->msix_enable = 1;
1444         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++) {
1445                 r = _base_request_irq(ioc, i, a->vector);
1446                 if (r) {
1447                         _base_free_irq(ioc);
1448                         _base_disable_msix(ioc);
1449                         kfree(entries);
1450                         goto try_ioapic;
1451                 }
1452         }
1453
1454         kfree(entries);
1455         return 0;
1456
1457 /* failback to io_apic interrupt routing */
1458  try_ioapic:
1459
1460         r = _base_request_irq(ioc, 0, ioc->pdev->irq);
1461
1462         return r;
1463 }
1464
1465 /**
1466  * mpt2sas_base_map_resources - map in controller resources (io/irq/memap)
1467  * @ioc: per adapter object
1468  *
1469  * Returns 0 for success, non-zero for failure.
1470  */
1471 int
1472 mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
1473 {
1474         struct pci_dev *pdev = ioc->pdev;
1475         u32 memap_sz;
1476         u32 pio_sz;
1477         int i, r = 0;
1478         u64 pio_chip = 0;
1479         u64 chip_phys = 0;
1480         struct adapter_reply_queue *reply_q;
1481
1482         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n",
1483             ioc->name, __func__));
1484
1485         ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM);
1486         if (pci_enable_device_mem(pdev)) {
1487                 printk(MPT2SAS_WARN_FMT "pci_enable_device_mem: "
1488                     "failed\n", ioc->name);
1489                 ioc->bars = 0;
1490                 return -ENODEV;
1491         }
1492
1493
1494         if (pci_request_selected_regions(pdev, ioc->bars,
1495             MPT2SAS_DRIVER_NAME)) {
1496                 printk(MPT2SAS_WARN_FMT "pci_request_selected_regions: "
1497                     "failed\n", ioc->name);
1498                 ioc->bars = 0;
1499                 r = -ENODEV;
1500                 goto out_fail;
1501         }
1502
1503         /* AER (Advanced Error Reporting) hooks */
1504         pci_enable_pcie_error_reporting(pdev);
1505
1506         pci_set_master(pdev);
1507
1508         if (_base_config_dma_addressing(ioc, pdev) != 0) {
1509                 printk(MPT2SAS_WARN_FMT "no suitable DMA mask for %s\n",
1510                     ioc->name, pci_name(pdev));
1511                 r = -ENODEV;
1512                 goto out_fail;
1513         }
1514
1515         for (i = 0, memap_sz = 0, pio_sz = 0 ; i < DEVICE_COUNT_RESOURCE; i++) {
1516                 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
1517                         if (pio_sz)
1518                                 continue;
1519                         pio_chip = (u64)pci_resource_start(pdev, i);
1520                         pio_sz = pci_resource_len(pdev, i);
1521                 } else {
1522                         if (memap_sz)
1523                                 continue;
1524                         /* verify memory resource is valid before using */
1525                         if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
1526                                 ioc->chip_phys = pci_resource_start(pdev, i);
1527                                 chip_phys = (u64)ioc->chip_phys;
1528                                 memap_sz = pci_resource_len(pdev, i);
1529                                 ioc->chip = ioremap(ioc->chip_phys, memap_sz);
1530                                 if (ioc->chip == NULL) {
1531                                         printk(MPT2SAS_ERR_FMT "unable to map "
1532                                             "adapter memory!\n", ioc->name);
1533                                         r = -EINVAL;
1534                                         goto out_fail;
1535                                 }
1536                         }
1537                 }
1538         }
1539
1540         _base_mask_interrupts(ioc);
1541         r = _base_enable_msix(ioc);
1542         if (r)
1543                 goto out_fail;
1544
1545         list_for_each_entry(reply_q, &ioc->reply_queue_list, list)
1546                 printk(MPT2SAS_INFO_FMT "%s: IRQ %d\n",
1547                     reply_q->name,  ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
1548                     "IO-APIC enabled"), reply_q->vector);
1549
1550         printk(MPT2SAS_INFO_FMT "iomem(0x%016llx), mapped(0x%p), size(%d)\n",
1551             ioc->name, (unsigned long long)chip_phys, ioc->chip, memap_sz);
1552         printk(MPT2SAS_INFO_FMT "ioport(0x%016llx), size(%d)\n",
1553             ioc->name, (unsigned long long)pio_chip, pio_sz);
1554
1555         /* Save PCI configuration state for recovery from PCI AER/EEH errors */
1556         pci_save_state(pdev);
1557
1558         return 0;
1559
1560  out_fail:
1561         if (ioc->chip_phys)
1562                 iounmap(ioc->chip);
1563         ioc->chip_phys = 0;
1564         pci_release_selected_regions(ioc->pdev, ioc->bars);
1565         pci_disable_pcie_error_reporting(pdev);
1566         pci_disable_device(pdev);
1567         return r;
1568 }
1569
1570 /**
1571  * mpt2sas_base_get_msg_frame - obtain request mf pointer
1572  * @ioc: per adapter object
1573  * @smid: system request message index(smid zero is invalid)
1574  *
1575  * Returns virt pointer to message frame.
1576  */
1577 void *
1578 mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1579 {
1580         return (void *)(ioc->request + (smid * ioc->request_sz));
1581 }
1582
1583 /**
1584  * mpt2sas_base_get_sense_buffer - obtain a sense buffer assigned to a mf request
1585  * @ioc: per adapter object
1586  * @smid: system request message index
1587  *
1588  * Returns virt pointer to sense buffer.
1589  */
1590 void *
1591 mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1592 {
1593         return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1594 }
1595
1596 /**
1597  * mpt2sas_base_get_sense_buffer_dma - obtain a sense buffer assigned to a mf request
1598  * @ioc: per adapter object
1599  * @smid: system request message index
1600  *
1601  * Returns phys pointer to the low 32bit address of the sense buffer.
1602  */
1603 __le32
1604 mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1605 {
1606         return cpu_to_le32(ioc->sense_dma +
1607                         ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1608 }
1609
1610 /**
1611  * mpt2sas_base_get_reply_virt_addr - obtain reply frames virt address
1612  * @ioc: per adapter object
1613  * @phys_addr: lower 32 physical addr of the reply
1614  *
1615  * Converts 32bit lower physical addr into a virt address.
1616  */
1617 void *
1618 mpt2sas_base_get_reply_virt_addr(struct MPT2SAS_ADAPTER *ioc, u32 phys_addr)
1619 {
1620         if (!phys_addr)
1621                 return NULL;
1622         return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
1623 }
1624
1625 /**
1626  * mpt2sas_base_get_smid - obtain a free smid from internal queue
1627  * @ioc: per adapter object
1628  * @cb_idx: callback index
1629  *
1630  * Returns smid (zero is invalid)
1631  */
1632 u16
1633 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1634 {
1635         unsigned long flags;
1636         struct request_tracker *request;
1637         u16 smid;
1638
1639         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1640         if (list_empty(&ioc->internal_free_list)) {
1641                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1642                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1643                     ioc->name, __func__);
1644                 return 0;
1645         }
1646
1647         request = list_entry(ioc->internal_free_list.next,
1648             struct request_tracker, tracker_list);
1649         request->cb_idx = cb_idx;
1650         smid = request->smid;
1651         list_del(&request->tracker_list);
1652         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1653         return smid;
1654 }
1655
1656 /**
1657  * mpt2sas_base_get_smid_scsiio - obtain a free smid from scsiio queue
1658  * @ioc: per adapter object
1659  * @cb_idx: callback index
1660  * @scmd: pointer to scsi command object
1661  *
1662  * Returns smid (zero is invalid)
1663  */
1664 u16
1665 mpt2sas_base_get_smid_scsiio(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx,
1666     struct scsi_cmnd *scmd)
1667 {
1668         unsigned long flags;
1669         struct scsiio_tracker *request;
1670         u16 smid;
1671
1672         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1673         if (list_empty(&ioc->free_list)) {
1674                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1675                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1676                     ioc->name, __func__);
1677                 return 0;
1678         }
1679
1680         request = list_entry(ioc->free_list.next,
1681             struct scsiio_tracker, tracker_list);
1682         request->scmd = scmd;
1683         request->cb_idx = cb_idx;
1684         smid = request->smid;
1685         list_del(&request->tracker_list);
1686         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1687         return smid;
1688 }
1689
1690 /**
1691  * mpt2sas_base_get_smid_hpr - obtain a free smid from hi-priority queue
1692  * @ioc: per adapter object
1693  * @cb_idx: callback index
1694  *
1695  * Returns smid (zero is invalid)
1696  */
1697 u16
1698 mpt2sas_base_get_smid_hpr(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1699 {
1700         unsigned long flags;
1701         struct request_tracker *request;
1702         u16 smid;
1703
1704         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1705         if (list_empty(&ioc->hpr_free_list)) {
1706                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1707                 return 0;
1708         }
1709
1710         request = list_entry(ioc->hpr_free_list.next,
1711             struct request_tracker, tracker_list);
1712         request->cb_idx = cb_idx;
1713         smid = request->smid;
1714         list_del(&request->tracker_list);
1715         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1716         return smid;
1717 }
1718
1719
1720 /**
1721  * mpt2sas_base_free_smid - put smid back on free_list
1722  * @ioc: per adapter object
1723  * @smid: system request message index
1724  *
1725  * Return nothing.
1726  */
1727 void
1728 mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1729 {
1730         unsigned long flags;
1731         int i;
1732         struct chain_tracker *chain_req, *next;
1733
1734         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1735         if (smid < ioc->hi_priority_smid) {
1736                 /* scsiio queue */
1737                 i = smid - 1;
1738                 if (!list_empty(&ioc->scsi_lookup[i].chain_list)) {
1739                         list_for_each_entry_safe(chain_req, next,
1740                             &ioc->scsi_lookup[i].chain_list, tracker_list) {
1741                                 list_del_init(&chain_req->tracker_list);
1742                                 list_add_tail(&chain_req->tracker_list,
1743                                     &ioc->free_chain_list);
1744                         }
1745                 }
1746                 ioc->scsi_lookup[i].cb_idx = 0xFF;
1747                 ioc->scsi_lookup[i].scmd = NULL;
1748                 ioc->scsi_lookup[i].direct_io = 0;
1749                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
1750                     &ioc->free_list);
1751                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1752
1753                 /*
1754                  * See _wait_for_commands_to_complete() call with regards
1755                  * to this code.
1756                  */
1757                 if (ioc->shost_recovery && ioc->pending_io_count) {
1758                         if (ioc->pending_io_count == 1)
1759                                 wake_up(&ioc->reset_wq);
1760                         ioc->pending_io_count--;
1761                 }
1762                 return;
1763         } else if (smid < ioc->internal_smid) {
1764                 /* hi-priority */
1765                 i = smid - ioc->hi_priority_smid;
1766                 ioc->hpr_lookup[i].cb_idx = 0xFF;
1767                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
1768                     &ioc->hpr_free_list);
1769         } else if (smid <= ioc->hba_queue_depth) {
1770                 /* internal queue */
1771                 i = smid - ioc->internal_smid;
1772                 ioc->internal_lookup[i].cb_idx = 0xFF;
1773                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
1774                     &ioc->internal_free_list);
1775         }
1776         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1777 }
1778
1779 /**
1780  * _base_writeq - 64 bit write to MMIO
1781  * @ioc: per adapter object
1782  * @b: data payload
1783  * @addr: address in MMIO space
1784  * @writeq_lock: spin lock
1785  *
1786  * Glue for handling an atomic 64 bit word to MMIO. This special handling takes
1787  * care of 32 bit environment where its not quarenteed to send the entire word
1788  * in one transfer.
1789  */
1790 #ifndef writeq
1791 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1792     spinlock_t *writeq_lock)
1793 {
1794         unsigned long flags;
1795         __u64 data_out = cpu_to_le64(b);
1796
1797         spin_lock_irqsave(writeq_lock, flags);
1798         writel((u32)(data_out), addr);
1799         writel((u32)(data_out >> 32), (addr + 4));
1800         spin_unlock_irqrestore(writeq_lock, flags);
1801 }
1802 #else
1803 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1804     spinlock_t *writeq_lock)
1805 {
1806         writeq(cpu_to_le64(b), addr);
1807 }
1808 #endif
1809
1810 static inline u8
1811 _base_get_msix_index(struct MPT2SAS_ADAPTER *ioc)
1812 {
1813         return ioc->cpu_msix_table[raw_smp_processor_id()];
1814 }
1815
1816 /**
1817  * mpt2sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
1818  * @ioc: per adapter object
1819  * @smid: system request message index
1820  * @handle: device handle
1821  *
1822  * Return nothing.
1823  */
1824 void
1825 mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid, u16 handle)
1826 {
1827         Mpi2RequestDescriptorUnion_t descriptor;
1828         u64 *request = (u64 *)&descriptor;
1829
1830
1831         descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
1832         descriptor.SCSIIO.MSIxIndex =  _base_get_msix_index(ioc);
1833         descriptor.SCSIIO.SMID = cpu_to_le16(smid);
1834         descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
1835         descriptor.SCSIIO.LMID = 0;
1836         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1837             &ioc->scsi_lookup_lock);
1838 }
1839
1840
1841 /**
1842  * mpt2sas_base_put_smid_hi_priority - send Task Management request to firmware
1843  * @ioc: per adapter object
1844  * @smid: system request message index
1845  *
1846  * Return nothing.
1847  */
1848 void
1849 mpt2sas_base_put_smid_hi_priority(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1850 {
1851         Mpi2RequestDescriptorUnion_t descriptor;
1852         u64 *request = (u64 *)&descriptor;
1853
1854         descriptor.HighPriority.RequestFlags =
1855             MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
1856         descriptor.HighPriority.MSIxIndex =  0;
1857         descriptor.HighPriority.SMID = cpu_to_le16(smid);
1858         descriptor.HighPriority.LMID = 0;
1859         descriptor.HighPriority.Reserved1 = 0;
1860         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1861             &ioc->scsi_lookup_lock);
1862 }
1863
1864 /**
1865  * mpt2sas_base_put_smid_default - Default, primarily used for config pages
1866  * @ioc: per adapter object
1867  * @smid: system request message index
1868  *
1869  * Return nothing.
1870  */
1871 void
1872 mpt2sas_base_put_smid_default(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1873 {
1874         Mpi2RequestDescriptorUnion_t descriptor;
1875         u64 *request = (u64 *)&descriptor;
1876
1877         descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1878         descriptor.Default.MSIxIndex =  _base_get_msix_index(ioc);
1879         descriptor.Default.SMID = cpu_to_le16(smid);
1880         descriptor.Default.LMID = 0;
1881         descriptor.Default.DescriptorTypeDependent = 0;
1882         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1883             &ioc->scsi_lookup_lock);
1884 }
1885
1886 /**
1887  * mpt2sas_base_put_smid_target_assist - send Target Assist/Status to firmware
1888  * @ioc: per adapter object
1889  * @smid: system request message index
1890  * @io_index: value used to track the IO
1891  *
1892  * Return nothing.
1893  */
1894 void
1895 mpt2sas_base_put_smid_target_assist(struct MPT2SAS_ADAPTER *ioc, u16 smid,
1896     u16 io_index)
1897 {
1898         Mpi2RequestDescriptorUnion_t descriptor;
1899         u64 *request = (u64 *)&descriptor;
1900
1901         descriptor.SCSITarget.RequestFlags =
1902             MPI2_REQ_DESCRIPT_FLAGS_SCSI_TARGET;
1903         descriptor.SCSITarget.MSIxIndex =  _base_get_msix_index(ioc);
1904         descriptor.SCSITarget.SMID = cpu_to_le16(smid);
1905         descriptor.SCSITarget.LMID = 0;
1906         descriptor.SCSITarget.IoIndex = cpu_to_le16(io_index);
1907         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1908             &ioc->scsi_lookup_lock);
1909 }
1910
1911 /**
1912  * _base_display_dell_branding - Disply branding string
1913  * @ioc: per adapter object
1914  *
1915  * Return nothing.
1916  */
1917 static void
1918 _base_display_dell_branding(struct MPT2SAS_ADAPTER *ioc)
1919 {
1920         char dell_branding[MPT2SAS_DELL_BRANDING_SIZE];
1921
1922         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_DELL)
1923                 return;
1924
1925         memset(dell_branding, 0, MPT2SAS_DELL_BRANDING_SIZE);
1926         switch (ioc->pdev->subsystem_device) {
1927         case MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID:
1928                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING,
1929                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1930                 break;
1931         case MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID:
1932                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING,
1933                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1934                 break;
1935         case MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID:
1936                 strncpy(dell_branding,
1937                     MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING,
1938                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1939                 break;
1940         case MPT2SAS_DELL_PERC_H200_MODULAR_SSDID:
1941                 strncpy(dell_branding,
1942                     MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING,
1943                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1944                 break;
1945         case MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID:
1946                 strncpy(dell_branding,
1947                     MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING,
1948                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1949                 break;
1950         case MPT2SAS_DELL_PERC_H200_SSDID:
1951                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_BRANDING,
1952                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1953                 break;
1954         case MPT2SAS_DELL_6GBPS_SAS_SSDID:
1955                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_BRANDING,
1956                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1957                 break;
1958         default:
1959                 sprintf(dell_branding, "0x%4X", ioc->pdev->subsystem_device);
1960                 break;
1961         }
1962
1963         printk(MPT2SAS_INFO_FMT "%s: Vendor(0x%04X), Device(0x%04X),"
1964             " SSVID(0x%04X), SSDID(0x%04X)\n", ioc->name, dell_branding,
1965             ioc->pdev->vendor, ioc->pdev->device, ioc->pdev->subsystem_vendor,
1966             ioc->pdev->subsystem_device);
1967 }
1968
1969 /**
1970  * _base_display_intel_branding - Display branding string
1971  * @ioc: per adapter object
1972  *
1973  * Return nothing.
1974  */
1975 static void
1976 _base_display_intel_branding(struct MPT2SAS_ADAPTER *ioc)
1977 {
1978         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1979                 return;
1980
1981         switch (ioc->pdev->device) {
1982         case MPI2_MFGPAGE_DEVID_SAS2008:
1983                 switch (ioc->pdev->subsystem_device) {
1984                 case MPT2SAS_INTEL_RMS2LL080_SSDID:
1985                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1986                             MPT2SAS_INTEL_RMS2LL080_BRANDING);
1987                         break;
1988                 case MPT2SAS_INTEL_RMS2LL040_SSDID:
1989                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1990                             MPT2SAS_INTEL_RMS2LL040_BRANDING);
1991                         break;
1992                 case MPT2SAS_INTEL_SSD910_SSDID:
1993                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1994                             MPT2SAS_INTEL_SSD910_BRANDING);
1995                         break;
1996                 default:
1997                         break;
1998                 }
1999         case MPI2_MFGPAGE_DEVID_SAS2308_2:
2000                 switch (ioc->pdev->subsystem_device) {
2001                 case MPT2SAS_INTEL_RS25GB008_SSDID:
2002                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2003                             MPT2SAS_INTEL_RS25GB008_BRANDING);
2004                         break;
2005                 case MPT2SAS_INTEL_RMS25JB080_SSDID:
2006                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2007                             MPT2SAS_INTEL_RMS25JB080_BRANDING);
2008                         break;
2009                 case MPT2SAS_INTEL_RMS25JB040_SSDID:
2010                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2011                             MPT2SAS_INTEL_RMS25JB040_BRANDING);
2012                         break;
2013                 case MPT2SAS_INTEL_RMS25KB080_SSDID:
2014                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2015                             MPT2SAS_INTEL_RMS25KB080_BRANDING);
2016                         break;
2017                 case MPT2SAS_INTEL_RMS25KB040_SSDID:
2018                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2019                             MPT2SAS_INTEL_RMS25KB040_BRANDING);
2020                         break;
2021                 case MPT2SAS_INTEL_RMS25LB040_SSDID:
2022                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2023                             MPT2SAS_INTEL_RMS25LB040_BRANDING);
2024                         break;
2025                 case MPT2SAS_INTEL_RMS25LB080_SSDID:
2026                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2027                             MPT2SAS_INTEL_RMS25LB080_BRANDING);
2028                         break;
2029                 default:
2030                         break;
2031                 }
2032         default:
2033                 break;
2034         }
2035 }
2036
2037 /**
2038  * _base_display_hp_branding - Display branding string
2039  * @ioc: per adapter object
2040  *
2041  * Return nothing.
2042  */
2043 static void
2044 _base_display_hp_branding(struct MPT2SAS_ADAPTER *ioc)
2045 {
2046         if (ioc->pdev->subsystem_vendor != MPT2SAS_HP_3PAR_SSVID)
2047                 return;
2048
2049         switch (ioc->pdev->device) {
2050         case MPI2_MFGPAGE_DEVID_SAS2004:
2051                 switch (ioc->pdev->subsystem_device) {
2052                 case MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_SSDID:
2053                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2054                             MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_BRANDING);
2055                         break;
2056                 default:
2057                         break;
2058                 }
2059         case MPI2_MFGPAGE_DEVID_SAS2308_2:
2060                 switch (ioc->pdev->subsystem_device) {
2061                 case MPT2SAS_HP_2_4_INTERNAL_SSDID:
2062                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2063                             MPT2SAS_HP_2_4_INTERNAL_BRANDING);
2064                         break;
2065                 case MPT2SAS_HP_2_4_EXTERNAL_SSDID:
2066                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2067                             MPT2SAS_HP_2_4_EXTERNAL_BRANDING);
2068                         break;
2069                 case MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_SSDID:
2070                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2071                             MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_BRANDING);
2072                         break;
2073                 case MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_SSDID:
2074                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2075                             MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_BRANDING);
2076                         break;
2077                 default:
2078                         break;
2079                 }
2080         default:
2081                 break;
2082         }
2083 }
2084
2085 /**
2086  * _base_display_ioc_capabilities - Disply IOC's capabilities.
2087  * @ioc: per adapter object
2088  *
2089  * Return nothing.
2090  */
2091 static void
2092 _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc)
2093 {
2094         int i = 0;
2095         char desc[16];
2096         u32 iounit_pg1_flags;
2097         u32 bios_version;
2098
2099         bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2100         strncpy(desc, ioc->manu_pg0.ChipName, 16);
2101         printk(MPT2SAS_INFO_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "
2102            "ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
2103             ioc->name, desc,
2104            (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2105            (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2106            (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2107            ioc->facts.FWVersion.Word & 0x000000FF,
2108            ioc->pdev->revision,
2109            (bios_version & 0xFF000000) >> 24,
2110            (bios_version & 0x00FF0000) >> 16,
2111            (bios_version & 0x0000FF00) >> 8,
2112             bios_version & 0x000000FF);
2113
2114         _base_display_dell_branding(ioc);
2115         _base_display_intel_branding(ioc);
2116         _base_display_hp_branding(ioc);
2117
2118         printk(MPT2SAS_INFO_FMT "Protocol=(", ioc->name);
2119
2120         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
2121                 printk("Initiator");
2122                 i++;
2123         }
2124
2125         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
2126                 printk("%sTarget", i ? "," : "");
2127                 i++;
2128         }
2129
2130         i = 0;
2131         printk("), ");
2132         printk("Capabilities=(");
2133
2134         if (!ioc->hide_ir_msg) {
2135                 if (ioc->facts.IOCCapabilities &
2136                     MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
2137                         printk("Raid");
2138                         i++;
2139                 }
2140         }
2141
2142         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
2143                 printk("%sTLR", i ? "," : "");
2144                 i++;
2145         }
2146
2147         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
2148                 printk("%sMulticast", i ? "," : "");
2149                 i++;
2150         }
2151
2152         if (ioc->facts.IOCCapabilities &
2153             MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
2154                 printk("%sBIDI Target", i ? "," : "");
2155                 i++;
2156         }
2157
2158         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
2159                 printk("%sEEDP", i ? "," : "");
2160                 i++;
2161         }
2162
2163         if (ioc->facts.IOCCapabilities &
2164             MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
2165                 printk("%sSnapshot Buffer", i ? "," : "");
2166                 i++;
2167         }
2168
2169         if (ioc->facts.IOCCapabilities &
2170             MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
2171                 printk("%sDiag Trace Buffer", i ? "," : "");
2172                 i++;
2173         }
2174
2175         if (ioc->facts.IOCCapabilities &
2176             MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) {
2177                 printk(KERN_INFO "%sDiag Extended Buffer", i ? "," : "");
2178                 i++;
2179         }
2180
2181         if (ioc->facts.IOCCapabilities &
2182             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
2183                 printk("%sTask Set Full", i ? "," : "");
2184                 i++;
2185         }
2186
2187         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2188         if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
2189                 printk("%sNCQ", i ? "," : "");
2190                 i++;
2191         }
2192
2193         printk(")\n");
2194 }
2195
2196 /**
2197  * mpt2sas_base_update_missing_delay - change the missing delay timers
2198  * @ioc: per adapter object
2199  * @device_missing_delay: amount of time till device is reported missing
2200  * @io_missing_delay: interval IO is returned when there is a missing device
2201  *
2202  * Return nothing.
2203  *
2204  * Passed on the command line, this function will modify the device missing
2205  * delay, as well as the io missing delay. This should be called at driver
2206  * load time.
2207  */
2208 void
2209 mpt2sas_base_update_missing_delay(struct MPT2SAS_ADAPTER *ioc,
2210         u16 device_missing_delay, u8 io_missing_delay)
2211 {
2212         u16 dmd, dmd_new, dmd_orignal;
2213         u8 io_missing_delay_original;
2214         u16 sz;
2215         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
2216         Mpi2ConfigReply_t mpi_reply;
2217         u8 num_phys = 0;
2218         u16 ioc_status;
2219
2220         mpt2sas_config_get_number_hba_phys(ioc, &num_phys);
2221         if (!num_phys)
2222                 return;
2223
2224         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (num_phys *
2225             sizeof(Mpi2SasIOUnit1PhyData_t));
2226         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
2227         if (!sas_iounit_pg1) {
2228                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2229                     ioc->name, __FILE__, __LINE__, __func__);
2230                 goto out;
2231         }
2232         if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
2233             sas_iounit_pg1, sz))) {
2234                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2235                     ioc->name, __FILE__, __LINE__, __func__);
2236                 goto out;
2237         }
2238         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
2239             MPI2_IOCSTATUS_MASK;
2240         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2241                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2242                     ioc->name, __FILE__, __LINE__, __func__);
2243                 goto out;
2244         }
2245
2246         /* device missing delay */
2247         dmd = sas_iounit_pg1->ReportDeviceMissingDelay;
2248         if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2249                 dmd = (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2250         else
2251                 dmd = dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2252         dmd_orignal = dmd;
2253         if (device_missing_delay > 0x7F) {
2254                 dmd = (device_missing_delay > 0x7F0) ? 0x7F0 :
2255                     device_missing_delay;
2256                 dmd = dmd / 16;
2257                 dmd |= MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16;
2258         } else
2259                 dmd = device_missing_delay;
2260         sas_iounit_pg1->ReportDeviceMissingDelay = dmd;
2261
2262         /* io missing delay */
2263         io_missing_delay_original = sas_iounit_pg1->IODeviceMissingDelay;
2264         sas_iounit_pg1->IODeviceMissingDelay = io_missing_delay;
2265
2266         if (!mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
2267             sz)) {
2268                 if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2269                         dmd_new = (dmd &
2270                             MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2271                 else
2272                         dmd_new =
2273                     dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2274                 printk(MPT2SAS_INFO_FMT "device_missing_delay: old(%d), "
2275                     "new(%d)\n", ioc->name, dmd_orignal, dmd_new);
2276                 printk(MPT2SAS_INFO_FMT "ioc_missing_delay: old(%d), "
2277                     "new(%d)\n", ioc->name, io_missing_delay_original,
2278                     io_missing_delay);
2279                 ioc->device_missing_delay = dmd_new;
2280                 ioc->io_missing_delay = io_missing_delay;
2281         }
2282
2283 out:
2284         kfree(sas_iounit_pg1);
2285 }
2286
2287 /**
2288  * _base_static_config_pages - static start of day config pages
2289  * @ioc: per adapter object
2290  *
2291  * Return nothing.
2292  */
2293 static void
2294 _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc)
2295 {
2296         Mpi2ConfigReply_t mpi_reply;
2297         u32 iounit_pg1_flags;
2298
2299         mpt2sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
2300         if (ioc->ir_firmware)
2301                 mpt2sas_config_get_manufacturing_pg10(ioc, &mpi_reply,
2302                     &ioc->manu_pg10);
2303         mpt2sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
2304         mpt2sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
2305         mpt2sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
2306         mpt2sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
2307         mpt2sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2308         _base_display_ioc_capabilities(ioc);
2309
2310         /*
2311          * Enable task_set_full handling in iounit_pg1 when the
2312          * facts capabilities indicate that its supported.
2313          */
2314         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2315         if ((ioc->facts.IOCCapabilities &
2316             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
2317                 iounit_pg1_flags &=
2318                     ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2319         else
2320                 iounit_pg1_flags |=
2321                     MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2322         ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
2323         mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2324
2325 }
2326
2327 /**
2328  * _base_release_memory_pools - release memory
2329  * @ioc: per adapter object
2330  *
2331  * Free memory allocated from _base_allocate_memory_pools.
2332  *
2333  * Return nothing.
2334  */
2335 static void
2336 _base_release_memory_pools(struct MPT2SAS_ADAPTER *ioc)
2337 {
2338         int i;
2339
2340         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2341             __func__));
2342
2343         if (ioc->request) {
2344                 pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
2345                     ioc->request,  ioc->request_dma);
2346                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "request_pool(0x%p)"
2347                     ": free\n", ioc->name, ioc->request));
2348                 ioc->request = NULL;
2349         }
2350
2351         if (ioc->sense) {
2352                 pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
2353                 if (ioc->sense_dma_pool)
2354                         pci_pool_destroy(ioc->sense_dma_pool);
2355                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_pool(0x%p)"
2356                     ": free\n", ioc->name, ioc->sense));
2357                 ioc->sense = NULL;
2358         }
2359
2360         if (ioc->reply) {
2361                 pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
2362                 if (ioc->reply_dma_pool)
2363                         pci_pool_destroy(ioc->reply_dma_pool);
2364                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_pool(0x%p)"
2365                      ": free\n", ioc->name, ioc->reply));
2366                 ioc->reply = NULL;
2367         }
2368
2369         if (ioc->reply_free) {
2370                 pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
2371                     ioc->reply_free_dma);
2372                 if (ioc->reply_free_dma_pool)
2373                         pci_pool_destroy(ioc->reply_free_dma_pool);
2374                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_pool"
2375                     "(0x%p): free\n", ioc->name, ioc->reply_free));
2376                 ioc->reply_free = NULL;
2377         }
2378
2379         if (ioc->reply_post_free) {
2380                 pci_pool_free(ioc->reply_post_free_dma_pool,
2381                     ioc->reply_post_free, ioc->reply_post_free_dma);
2382                 if (ioc->reply_post_free_dma_pool)
2383                         pci_pool_destroy(ioc->reply_post_free_dma_pool);
2384                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2385                     "reply_post_free_pool(0x%p): free\n", ioc->name,
2386                     ioc->reply_post_free));
2387                 ioc->reply_post_free = NULL;
2388         }
2389
2390         if (ioc->config_page) {
2391                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2392                     "config_page(0x%p): free\n", ioc->name,
2393                     ioc->config_page));
2394                 pci_free_consistent(ioc->pdev, ioc->config_page_sz,
2395                     ioc->config_page, ioc->config_page_dma);
2396         }
2397
2398         if (ioc->scsi_lookup) {
2399                 free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
2400                 ioc->scsi_lookup = NULL;
2401         }
2402         kfree(ioc->hpr_lookup);
2403         kfree(ioc->internal_lookup);
2404         if (ioc->chain_lookup) {
2405                 for (i = 0; i < ioc->chain_depth; i++) {
2406                         if (ioc->chain_lookup[i].chain_buffer)
2407                                 pci_pool_free(ioc->chain_dma_pool,
2408                                     ioc->chain_lookup[i].chain_buffer,
2409                                     ioc->chain_lookup[i].chain_buffer_dma);
2410                 }
2411                 if (ioc->chain_dma_pool)
2412                         pci_pool_destroy(ioc->chain_dma_pool);
2413                 free_pages((ulong)ioc->chain_lookup, ioc->chain_pages);
2414                 ioc->chain_lookup = NULL;
2415         }
2416 }
2417
2418
2419 /**
2420  * _base_allocate_memory_pools - allocate start of day memory pools
2421  * @ioc: per adapter object
2422  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2423  *
2424  * Returns 0 success, anything else error
2425  */
2426 static int
2427 _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc,  int sleep_flag)
2428 {
2429         struct mpt2sas_facts *facts;
2430         u16 max_sge_elements;
2431         u16 chains_needed_per_io;
2432         u32 sz, total_sz, reply_post_free_sz;
2433         u32 retry_sz;
2434         u16 max_request_credit;
2435         int i;
2436
2437         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2438             __func__));
2439
2440         retry_sz = 0;
2441         facts = &ioc->facts;
2442
2443         /* command line tunables  for max sgl entries */
2444         if (max_sgl_entries != -1) {
2445                 ioc->shost->sg_tablesize = (max_sgl_entries <
2446                     MPT2SAS_SG_DEPTH) ? max_sgl_entries :
2447                     MPT2SAS_SG_DEPTH;
2448         } else {
2449                 ioc->shost->sg_tablesize = MPT2SAS_SG_DEPTH;
2450         }
2451
2452         /* command line tunables  for max controller queue depth */
2453         if (max_queue_depth != -1 && max_queue_depth != 0) {
2454                 max_request_credit = min_t(u16, max_queue_depth +
2455                         ioc->hi_priority_depth + ioc->internal_depth,
2456                         facts->RequestCredit);
2457                 if (max_request_credit > MAX_HBA_QUEUE_DEPTH)
2458                         max_request_credit =  MAX_HBA_QUEUE_DEPTH;
2459         } else
2460                 max_request_credit = min_t(u16, facts->RequestCredit,
2461                     MAX_HBA_QUEUE_DEPTH);
2462
2463         ioc->hba_queue_depth = max_request_credit;
2464         ioc->hi_priority_depth = facts->HighPriorityCredit;
2465         ioc->internal_depth = ioc->hi_priority_depth + 5;
2466
2467         /* request frame size */
2468         ioc->request_sz = facts->IOCRequestFrameSize * 4;
2469
2470         /* reply frame size */
2471         ioc->reply_sz = facts->ReplyFrameSize * 4;
2472
2473  retry_allocation:
2474         total_sz = 0;
2475         /* calculate number of sg elements left over in the 1st frame */
2476         max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
2477             sizeof(Mpi2SGEIOUnion_t)) + ioc->sge_size);
2478         ioc->max_sges_in_main_message = max_sge_elements/ioc->sge_size;
2479
2480         /* now do the same for a chain buffer */
2481         max_sge_elements = ioc->request_sz - ioc->sge_size;
2482         ioc->max_sges_in_chain_message = max_sge_elements/ioc->sge_size;
2483
2484         ioc->chain_offset_value_for_main_message =
2485             ((sizeof(Mpi2SCSIIORequest_t) - sizeof(Mpi2SGEIOUnion_t)) +
2486              (ioc->max_sges_in_chain_message * ioc->sge_size)) / 4;
2487
2488         /*
2489          *  MPT2SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
2490          */
2491         chains_needed_per_io = ((ioc->shost->sg_tablesize -
2492            ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
2493             + 1;
2494         if (chains_needed_per_io > facts->MaxChainDepth) {
2495                 chains_needed_per_io = facts->MaxChainDepth;
2496                 ioc->shost->sg_tablesize = min_t(u16,
2497                 ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
2498                 * chains_needed_per_io), ioc->shost->sg_tablesize);
2499         }
2500         ioc->chains_needed_per_io = chains_needed_per_io;
2501
2502         /* reply free queue sizing - taking into account for 64 FW events */
2503         ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
2504
2505         /* calculate reply descriptor post queue depth */
2506         ioc->reply_post_queue_depth = ioc->hba_queue_depth +
2507                                         ioc->reply_free_queue_depth +  1;
2508         /* align the reply post queue on the next 16 count boundary */
2509         if (ioc->reply_post_queue_depth % 16)
2510                 ioc->reply_post_queue_depth += 16 -
2511                         (ioc->reply_post_queue_depth % 16);
2512
2513
2514         if (ioc->reply_post_queue_depth >
2515             facts->MaxReplyDescriptorPostQueueDepth) {
2516                 ioc->reply_post_queue_depth =
2517                         facts->MaxReplyDescriptorPostQueueDepth -
2518                     (facts->MaxReplyDescriptorPostQueueDepth % 16);
2519                 ioc->hba_queue_depth =
2520                         ((ioc->reply_post_queue_depth - 64) / 2) - 1;
2521                 ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
2522         }
2523
2524         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "
2525             "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
2526             "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
2527             ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
2528             ioc->chains_needed_per_io));
2529
2530         ioc->scsiio_depth = ioc->hba_queue_depth -
2531             ioc->hi_priority_depth - ioc->internal_depth;
2532
2533         /* set the scsi host can_queue depth
2534          * with some internal commands that could be outstanding
2535          */
2536         ioc->shost->can_queue = ioc->scsiio_depth;
2537         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host: "
2538             "can_queue depth (%d)\n", ioc->name, ioc->shost->can_queue));
2539
2540         /* contiguous pool for request and chains, 16 byte align, one extra "
2541          * "frame for smid=0
2542          */
2543         ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth;
2544         sz = ((ioc->scsiio_depth + 1) * ioc->request_sz);
2545
2546         /* hi-priority queue */
2547         sz += (ioc->hi_priority_depth * ioc->request_sz);
2548
2549         /* internal queue */
2550         sz += (ioc->internal_depth * ioc->request_sz);
2551
2552         ioc->request_dma_sz = sz;
2553         ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
2554         if (!ioc->request) {
2555                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2556                     "failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2557                     "total(%d kB)\n", ioc->name, ioc->hba_queue_depth,
2558                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2559                 if (ioc->scsiio_depth < MPT2SAS_SAS_QUEUE_DEPTH)
2560                         goto out;
2561                 retry_sz += 64;
2562                 ioc->hba_queue_depth = max_request_credit - retry_sz;
2563                 goto retry_allocation;
2564         }
2565
2566         if (retry_sz)
2567                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2568                     "succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2569                     "total(%d kb)\n", ioc->name, ioc->hba_queue_depth,
2570                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2571
2572
2573         /* hi-priority queue */
2574         ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) *
2575             ioc->request_sz);
2576         ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) *
2577             ioc->request_sz);
2578
2579         /* internal queue */
2580         ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth *
2581             ioc->request_sz);
2582         ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth *
2583             ioc->request_sz);
2584
2585
2586         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool(0x%p): "
2587             "depth(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2588             ioc->request, ioc->hba_queue_depth, ioc->request_sz,
2589             (ioc->hba_queue_depth * ioc->request_sz)/1024));
2590         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool: dma(0x%llx)\n",
2591             ioc->name, (unsigned long long) ioc->request_dma));
2592         total_sz += sz;
2593
2594         sz = ioc->scsiio_depth * sizeof(struct scsiio_tracker);
2595         ioc->scsi_lookup_pages = get_order(sz);
2596         ioc->scsi_lookup = (struct scsiio_tracker *)__get_free_pages(
2597             GFP_KERNEL, ioc->scsi_lookup_pages);
2598         if (!ioc->scsi_lookup) {
2599                 printk(MPT2SAS_ERR_FMT "scsi_lookup: get_free_pages failed, "
2600                     "sz(%d)\n", ioc->name, (int)sz);
2601                 goto out;
2602         }
2603
2604         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsiio(0x%p): "
2605             "depth(%d)\n", ioc->name, ioc->request,
2606             ioc->scsiio_depth));
2607
2608         ioc->chain_depth = min_t(u32, ioc->chain_depth, MAX_CHAIN_DEPTH);
2609         sz = ioc->chain_depth * sizeof(struct chain_tracker);
2610         ioc->chain_pages = get_order(sz);
2611
2612         ioc->chain_lookup = (struct chain_tracker *)__get_free_pages(
2613             GFP_KERNEL, ioc->chain_pages);
2614         if (!ioc->chain_lookup) {
2615                 printk(MPT2SAS_ERR_FMT "chain_lookup: get_free_pages failed, "
2616                     "sz(%d)\n", ioc->name, (int)sz);
2617                 goto out;
2618         }
2619         ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev,
2620             ioc->request_sz, 16, 0);
2621         if (!ioc->chain_dma_pool) {
2622                 printk(MPT2SAS_ERR_FMT "chain_dma_pool: pci_pool_create "
2623                     "failed\n", ioc->name);
2624                 goto out;
2625         }
2626         for (i = 0; i < ioc->chain_depth; i++) {
2627                 ioc->chain_lookup[i].chain_buffer = pci_pool_alloc(
2628                     ioc->chain_dma_pool , GFP_KERNEL,
2629                     &ioc->chain_lookup[i].chain_buffer_dma);
2630                 if (!ioc->chain_lookup[i].chain_buffer) {
2631                         ioc->chain_depth = i;
2632                         goto chain_done;
2633                 }
2634                 total_sz += ioc->request_sz;
2635         }
2636 chain_done:
2637         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "chain pool depth"
2638             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2639             ioc->chain_depth, ioc->request_sz, ((ioc->chain_depth *
2640             ioc->request_sz))/1024));
2641
2642         /* initialize hi-priority queue smid's */
2643         ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth,
2644             sizeof(struct request_tracker), GFP_KERNEL);
2645         if (!ioc->hpr_lookup) {
2646                 printk(MPT2SAS_ERR_FMT "hpr_lookup: kcalloc failed\n",
2647                     ioc->name);
2648                 goto out;
2649         }
2650         ioc->hi_priority_smid = ioc->scsiio_depth + 1;
2651         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hi_priority(0x%p): "
2652             "depth(%d), start smid(%d)\n", ioc->name, ioc->hi_priority,
2653             ioc->hi_priority_depth, ioc->hi_priority_smid));
2654
2655         /* initialize internal queue smid's */
2656         ioc->internal_lookup = kcalloc(ioc->internal_depth,
2657             sizeof(struct request_tracker), GFP_KERNEL);
2658         if (!ioc->internal_lookup) {
2659                 printk(MPT2SAS_ERR_FMT "internal_lookup: kcalloc failed\n",
2660                     ioc->name);
2661                 goto out;
2662         }
2663         ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth;
2664         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "internal(0x%p): "
2665             "depth(%d), start smid(%d)\n", ioc->name, ioc->internal,
2666              ioc->internal_depth, ioc->internal_smid));
2667
2668         /* sense buffers, 4 byte align */
2669         sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE;
2670         ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
2671             0);
2672         if (!ioc->sense_dma_pool) {
2673                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_create failed\n",
2674                     ioc->name);
2675                 goto out;
2676         }
2677         ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
2678             &ioc->sense_dma);
2679         if (!ioc->sense) {
2680                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_alloc failed\n",
2681                     ioc->name);
2682                 goto out;
2683         }
2684         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2685             "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
2686             "(%d kB)\n", ioc->name, ioc->sense, ioc->scsiio_depth,
2687             SCSI_SENSE_BUFFERSIZE, sz/1024));
2688         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_dma(0x%llx)\n",
2689             ioc->name, (unsigned long long)ioc->sense_dma));
2690         total_sz += sz;
2691
2692         /* reply pool, 4 byte align */
2693         sz = ioc->reply_free_queue_depth * ioc->reply_sz;
2694         ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
2695             0);
2696         if (!ioc->reply_dma_pool) {
2697                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_create failed\n",
2698                     ioc->name);
2699                 goto out;
2700         }
2701         ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
2702             &ioc->reply_dma);
2703         if (!ioc->reply) {
2704                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_alloc failed\n",
2705                     ioc->name);
2706                 goto out;
2707         }
2708         ioc->reply_dma_min_address = (u32)(ioc->reply_dma);
2709         ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz;
2710         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply pool(0x%p): depth"
2711             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->reply,
2712             ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
2713         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_dma(0x%llx)\n",
2714             ioc->name, (unsigned long long)ioc->reply_dma));
2715         total_sz += sz;
2716
2717         /* reply free queue, 16 byte align */
2718         sz = ioc->reply_free_queue_depth * 4;
2719         ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
2720             ioc->pdev, sz, 16, 0);
2721         if (!ioc->reply_free_dma_pool) {
2722                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_create "
2723                     "failed\n", ioc->name);
2724                 goto out;
2725         }
2726         ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
2727             &ioc->reply_free_dma);
2728         if (!ioc->reply_free) {
2729                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_alloc "
2730                     "failed\n", ioc->name);
2731                 goto out;
2732         }
2733         memset(ioc->reply_free, 0, sz);
2734         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free pool(0x%p): "
2735             "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
2736             ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
2737         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_dma"
2738             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->reply_free_dma));
2739         total_sz += sz;
2740
2741         /* reply post queue, 16 byte align */
2742         reply_post_free_sz = ioc->reply_post_queue_depth *
2743             sizeof(Mpi2DefaultReplyDescriptor_t);
2744         if (_base_is_controller_msix_enabled(ioc))
2745                 sz = reply_post_free_sz * ioc->reply_queue_count;
2746         else
2747                 sz = reply_post_free_sz;
2748         ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
2749             ioc->pdev, sz, 16, 0);
2750         if (!ioc->reply_post_free_dma_pool) {
2751                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_create "
2752                     "failed\n", ioc->name);
2753                 goto out;
2754         }
2755         ioc->reply_post_free = pci_pool_alloc(ioc->reply_post_free_dma_pool ,
2756             GFP_KERNEL, &ioc->reply_post_free_dma);
2757         if (!ioc->reply_post_free) {
2758                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_alloc "
2759                     "failed\n", ioc->name);
2760                 goto out;
2761         }
2762         memset(ioc->reply_post_free, 0, sz);
2763         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply post free pool"
2764             "(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n",
2765             ioc->name, ioc->reply_post_free, ioc->reply_post_queue_depth, 8,
2766             sz/1024));
2767         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_post_free_dma = "
2768             "(0x%llx)\n", ioc->name, (unsigned long long)
2769             ioc->reply_post_free_dma));
2770         total_sz += sz;
2771
2772         ioc->config_page_sz = 512;
2773         ioc->config_page = pci_alloc_consistent(ioc->pdev,
2774             ioc->config_page_sz, &ioc->config_page_dma);
2775         if (!ioc->config_page) {
2776                 printk(MPT2SAS_ERR_FMT "config page: pci_pool_alloc "
2777                     "failed\n", ioc->name);
2778                 goto out;
2779         }
2780         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config page(0x%p): size"
2781             "(%d)\n", ioc->name, ioc->config_page, ioc->config_page_sz));
2782         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config_page_dma"
2783             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->config_page_dma));
2784         total_sz += ioc->config_page_sz;
2785
2786         printk(MPT2SAS_INFO_FMT "Allocated physical memory: size(%d kB)\n",
2787             ioc->name, total_sz/1024);
2788         printk(MPT2SAS_INFO_FMT "Current Controller Queue Depth(%d), "
2789             "Max Controller Queue Depth(%d)\n",
2790             ioc->name, ioc->shost->can_queue, facts->RequestCredit);
2791         printk(MPT2SAS_INFO_FMT "Scatter Gather Elements per IO(%d)\n",
2792             ioc->name, ioc->shost->sg_tablesize);
2793         return 0;
2794
2795  out:
2796         return -ENOMEM;
2797 }
2798
2799
2800 /**
2801  * mpt2sas_base_get_iocstate - Get the current state of a MPT adapter.
2802  * @ioc: Pointer to MPT_ADAPTER structure
2803  * @cooked: Request raw or cooked IOC state
2804  *
2805  * Returns all IOC Doorbell register bits if cooked==0, else just the
2806  * Doorbell bits in MPI_IOC_STATE_MASK.
2807  */
2808 u32
2809 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked)
2810 {
2811         u32 s, sc;
2812
2813         s = readl(&ioc->chip->Doorbell);
2814         sc = s & MPI2_IOC_STATE_MASK;
2815         return cooked ? sc : s;
2816 }
2817
2818 /**
2819  * _base_wait_on_iocstate - waiting on a particular ioc state
2820  * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
2821  * @timeout: timeout in second
2822  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2823  *
2824  * Returns 0 for success, non-zero for failure.
2825  */
2826 static int
2827 _base_wait_on_iocstate(struct MPT2SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
2828     int sleep_flag)
2829 {
2830         u32 count, cntdn;
2831         u32 current_state;
2832
2833         count = 0;
2834         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2835         do {
2836                 current_state = mpt2sas_base_get_iocstate(ioc, 1);
2837                 if (current_state == ioc_state)
2838                         return 0;
2839                 if (count && current_state == MPI2_IOC_STATE_FAULT)
2840                         break;
2841                 if (sleep_flag == CAN_SLEEP)
2842                         msleep(1);
2843                 else
2844                         udelay(500);
2845                 count++;
2846         } while (--cntdn);
2847
2848         return current_state;
2849 }
2850
2851 /**
2852  * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
2853  * a write to the doorbell)
2854  * @ioc: per adapter object
2855  * @timeout: timeout in second
2856  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2857  *
2858  * Returns 0 for success, non-zero for failure.
2859  *
2860  * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
2861  */
2862 static int
2863 _base_wait_for_doorbell_int(struct MPT2SAS_ADAPTER *ioc, int timeout,
2864     int sleep_flag)
2865 {
2866         u32 cntdn, count;
2867         u32 int_status;
2868
2869         count = 0;
2870         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2871         do {
2872                 int_status = readl(&ioc->chip->HostInterruptStatus);
2873                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2874                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2875                             "successful count(%d), timeout(%d)\n", ioc->name,
2876                             __func__, count, timeout));
2877                         return 0;
2878                 }
2879                 if (sleep_flag == CAN_SLEEP)
2880                         msleep(1);
2881                 else
2882                         udelay(500);
2883                 count++;
2884         } while (--cntdn);
2885
2886         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2887             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2888         return -EFAULT;
2889 }
2890
2891 /**
2892  * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
2893  * @ioc: per adapter object
2894  * @timeout: timeout in second
2895  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2896  *
2897  * Returns 0 for success, non-zero for failure.
2898  *
2899  * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
2900  * doorbell.
2901  */
2902 static int
2903 _base_wait_for_doorbell_ack(struct MPT2SAS_ADAPTER *ioc, int timeout,
2904     int sleep_flag)
2905 {
2906         u32 cntdn, count;
2907         u32 int_status;
2908         u32 doorbell;
2909
2910         count = 0;
2911         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2912         do {
2913                 int_status = readl(&ioc->chip->HostInterruptStatus);
2914                 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
2915                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2916                             "successful count(%d), timeout(%d)\n", ioc->name,
2917                             __func__, count, timeout));
2918                         return 0;
2919                 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2920                         doorbell = readl(&ioc->chip->Doorbell);
2921                         if ((doorbell & MPI2_IOC_STATE_MASK) ==
2922                             MPI2_IOC_STATE_FAULT) {
2923                                 mpt2sas_base_fault_info(ioc , doorbell);
2924                                 return -EFAULT;
2925                         }
2926                 } else if (int_status == 0xFFFFFFFF)
2927                         goto out;
2928
2929                 if (sleep_flag == CAN_SLEEP)
2930                         msleep(1);
2931                 else
2932                         udelay(500);
2933                 count++;
2934         } while (--cntdn);
2935
2936  out:
2937         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2938             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2939         return -EFAULT;
2940 }
2941
2942 /**
2943  * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
2944  * @ioc: per adapter object
2945  * @timeout: timeout in second
2946  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2947  *
2948  * Returns 0 for success, non-zero for failure.
2949  *
2950  */
2951 static int
2952 _base_wait_for_doorbell_not_used(struct MPT2SAS_ADAPTER *ioc, int timeout,
2953     int sleep_flag)
2954 {
2955         u32 cntdn, count;
2956         u32 doorbell_reg;
2957
2958         count = 0;
2959         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2960         do {
2961                 doorbell_reg = readl(&ioc->chip->Doorbell);
2962                 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
2963                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2964                             "successful count(%d), timeout(%d)\n", ioc->name,
2965                             __func__, count, timeout));
2966                         return 0;
2967                 }
2968                 if (sleep_flag == CAN_SLEEP)
2969                         msleep(1);
2970                 else
2971                         udelay(500);
2972                 count++;
2973         } while (--cntdn);
2974
2975         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2976             "doorbell_reg(%x)!\n", ioc->name, __func__, count, doorbell_reg);
2977         return -EFAULT;
2978 }
2979
2980 /**
2981  * _base_send_ioc_reset - send doorbell reset
2982  * @ioc: per adapter object
2983  * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
2984  * @timeout: timeout in second
2985  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2986  *
2987  * Returns 0 for success, non-zero for failure.
2988  */
2989 static int
2990 _base_send_ioc_reset(struct MPT2SAS_ADAPTER *ioc, u8 reset_type, int timeout,
2991     int sleep_flag)
2992 {
2993         u32 ioc_state;
2994         int r = 0;
2995
2996         if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
2997                 printk(MPT2SAS_ERR_FMT "%s: unknown reset_type\n",
2998                     ioc->name, __func__);
2999                 return -EFAULT;
3000         }
3001
3002         if (!(ioc->facts.IOCCapabilities &
3003            MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
3004                 return -EFAULT;
3005
3006         printk(MPT2SAS_INFO_FMT "sending message unit reset !!\n", ioc->name);
3007
3008         writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
3009             &ioc->chip->Doorbell);
3010         if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
3011                 r = -EFAULT;
3012                 goto out;
3013         }
3014         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
3015             timeout, sleep_flag);
3016         if (ioc_state) {
3017                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3018                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3019                 r = -EFAULT;
3020                 goto out;
3021         }
3022  out:
3023         printk(MPT2SAS_INFO_FMT "message unit reset: %s\n",
3024             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
3025         return r;
3026 }
3027
3028 /**
3029  * _base_handshake_req_reply_wait - send request thru doorbell interface
3030  * @ioc: per adapter object
3031  * @request_bytes: request length
3032  * @request: pointer having request payload
3033  * @reply_bytes: reply length
3034  * @reply: pointer to reply payload
3035  * @timeout: timeout in second
3036  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3037  *
3038  * Returns 0 for success, non-zero for failure.
3039  */
3040 static int
3041 _base_handshake_req_reply_wait(struct MPT2SAS_ADAPTER *ioc, int request_bytes,
3042     u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
3043 {
3044         MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
3045         int i;
3046         u8 failed;
3047         u16 dummy;
3048         __le32 *mfp;
3049
3050         /* make sure doorbell is not in use */
3051         if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
3052                 printk(MPT2SAS_ERR_FMT "doorbell is in use "
3053                     " (line=%d)\n", ioc->name, __LINE__);
3054                 return -EFAULT;
3055         }
3056
3057         /* clear pending doorbell interrupts from previous state changes */
3058         if (readl(&ioc->chip->HostInterruptStatus) &
3059             MPI2_HIS_IOC2SYS_DB_STATUS)
3060                 writel(0, &ioc->chip->HostInterruptStatus);
3061
3062         /* send message to ioc */
3063         writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
3064             ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
3065             &ioc->chip->Doorbell);
3066
3067         if ((_base_wait_for_doorbell_int(ioc, 5, NO_SLEEP))) {
3068                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3069                    "int failed (line=%d)\n", ioc->name, __LINE__);
3070                 return -EFAULT;
3071         }
3072         writel(0, &ioc->chip->HostInterruptStatus);
3073
3074         if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
3075                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3076                     "ack failed (line=%d)\n", ioc->name, __LINE__);
3077                 return -EFAULT;
3078         }
3079
3080         /* send message 32-bits at a time */
3081         for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
3082                 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
3083                 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
3084                         failed = 1;
3085         }
3086
3087         if (failed) {
3088                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3089                     "sending request failed (line=%d)\n", ioc->name, __LINE__);
3090                 return -EFAULT;
3091         }
3092
3093         /* now wait for the reply */
3094         if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
3095                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3096                    "int failed (line=%d)\n", ioc->name, __LINE__);
3097                 return -EFAULT;
3098         }
3099
3100         /* read the first two 16-bits, it gives the total length of the reply */
3101         reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3102             & MPI2_DOORBELL_DATA_MASK);
3103         writel(0, &ioc->chip->HostInterruptStatus);
3104         if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3105                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3106                    "int failed (line=%d)\n", ioc->name, __LINE__);
3107                 return -EFAULT;
3108         }
3109         reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3110             & MPI2_DOORBELL_DATA_MASK);
3111         writel(0, &ioc->chip->HostInterruptStatus);
3112
3113         for (i = 2; i < default_reply->MsgLength * 2; i++)  {
3114                 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3115                         printk(MPT2SAS_ERR_FMT "doorbell "
3116                             "handshake int failed (line=%d)\n", ioc->name,
3117                             __LINE__);
3118                         return -EFAULT;
3119                 }
3120                 if (i >=  reply_bytes/2) /* overflow case */
3121                         dummy = readl(&ioc->chip->Doorbell);
3122                 else
3123                         reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3124                             & MPI2_DOORBELL_DATA_MASK);
3125                 writel(0, &ioc->chip->HostInterruptStatus);
3126         }
3127
3128         _base_wait_for_doorbell_int(ioc, 5, sleep_flag);
3129         if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
3130                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "doorbell is in use "
3131                     " (line=%d)\n", ioc->name, __LINE__));
3132         }
3133         writel(0, &ioc->chip->HostInterruptStatus);
3134
3135         if (ioc->logging_level & MPT_DEBUG_INIT) {
3136                 mfp = (__le32 *)reply;
3137                 printk(KERN_INFO "\toffset:data\n");
3138                 for (i = 0; i < reply_bytes/4; i++)
3139                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3140                             le32_to_cpu(mfp[i]));
3141         }
3142         return 0;
3143 }
3144
3145 /**
3146  * mpt2sas_base_sas_iounit_control - send sas iounit control to FW
3147  * @ioc: per adapter object
3148  * @mpi_reply: the reply payload from FW
3149  * @mpi_request: the request payload sent to FW
3150  *
3151  * The SAS IO Unit Control Request message allows the host to perform low-level
3152  * operations, such as resets on the PHYs of the IO Unit, also allows the host
3153  * to obtain the IOC assigned device handles for a device if it has other
3154  * identifying information about the device, in addition allows the host to
3155  * remove IOC resources associated with the device.
3156  *
3157  * Returns 0 for success, non-zero for failure.
3158  */
3159 int
3160 mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
3161     Mpi2SasIoUnitControlReply_t *mpi_reply,
3162     Mpi2SasIoUnitControlRequest_t *mpi_request)
3163 {
3164         u16 smid;
3165         u32 ioc_state;
3166         unsigned long timeleft;
3167         u8 issue_reset;
3168         int rc;
3169         void *request;
3170         u16 wait_state_count;
3171
3172         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3173             __func__));
3174
3175         mutex_lock(&ioc->base_cmds.mutex);
3176
3177         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3178                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3179                     ioc->name, __func__);
3180                 rc = -EAGAIN;
3181                 goto out;
3182         }
3183
3184         wait_state_count = 0;
3185         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3186         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3187                 if (wait_state_count++ == 10) {
3188                         printk(MPT2SAS_ERR_FMT
3189                             "%s: failed due to ioc not operational\n",
3190                             ioc->name, __func__);
3191                         rc = -EFAULT;
3192                         goto out;
3193                 }
3194                 ssleep(1);
3195                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3196                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3197                     "operational state(count=%d)\n", ioc->name,
3198                     __func__, wait_state_count);
3199         }
3200
3201         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3202         if (!smid) {
3203                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3204                     ioc->name, __func__);
3205                 rc = -EAGAIN;
3206                 goto out;
3207         }
3208
3209         rc = 0;
3210         ioc->base_cmds.status = MPT2_CMD_PENDING;
3211         request = mpt2sas_base_get_msg_frame(ioc, smid);
3212         ioc->base_cmds.smid = smid;
3213         memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
3214         if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3215             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
3216                 ioc->ioc_link_reset_in_progress = 1;
3217         init_completion(&ioc->base_cmds.done);
3218         mpt2sas_base_put_smid_default(ioc, smid);
3219         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3220             msecs_to_jiffies(10000));
3221         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3222             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
3223             ioc->ioc_link_reset_in_progress)
3224                 ioc->ioc_link_reset_in_progress = 0;
3225         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3226                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3227                     ioc->name, __func__);
3228                 _debug_dump_mf(mpi_request,
3229                     sizeof(Mpi2SasIoUnitControlRequest_t)/4);
3230                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3231                         issue_reset = 1;
3232                 goto issue_host_reset;
3233         }
3234         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3235                 memcpy(mpi_reply, ioc->base_cmds.reply,
3236                     sizeof(Mpi2SasIoUnitControlReply_t));
3237         else
3238                 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
3239         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3240         goto out;
3241
3242  issue_host_reset:
3243         if (issue_reset)
3244                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3245                     FORCE_BIG_HAMMER);
3246         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3247         rc = -EFAULT;
3248  out:
3249         mutex_unlock(&ioc->base_cmds.mutex);
3250         return rc;
3251 }
3252
3253
3254 /**
3255  * mpt2sas_base_scsi_enclosure_processor - sending request to sep device
3256  * @ioc: per adapter object
3257  * @mpi_reply: the reply payload from FW
3258  * @mpi_request: the request payload sent to FW
3259  *
3260  * The SCSI Enclosure Processor request message causes the IOC to
3261  * communicate with SES devices to control LED status signals.
3262  *
3263  * Returns 0 for success, non-zero for failure.
3264  */
3265 int
3266 mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
3267     Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
3268 {
3269         u16 smid;
3270         u32 ioc_state;
3271         unsigned long timeleft;
3272         u8 issue_reset;
3273         int rc;
3274         void *request;
3275         u16 wait_state_count;
3276
3277         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3278             __func__));
3279
3280         mutex_lock(&ioc->base_cmds.mutex);
3281
3282         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3283                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3284                     ioc->name, __func__);
3285                 rc = -EAGAIN;
3286                 goto out;
3287         }
3288
3289         wait_state_count = 0;
3290         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3291         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3292                 if (wait_state_count++ == 10) {
3293                         printk(MPT2SAS_ERR_FMT
3294                             "%s: failed due to ioc not operational\n",
3295                             ioc->name, __func__);
3296                         rc = -EFAULT;
3297                         goto out;
3298                 }
3299                 ssleep(1);
3300                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3301                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3302                     "operational state(count=%d)\n", ioc->name,
3303                     __func__, wait_state_count);
3304         }
3305
3306         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3307         if (!smid) {
3308                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3309                     ioc->name, __func__);
3310                 rc = -EAGAIN;
3311                 goto out;
3312         }
3313
3314         rc = 0;
3315         ioc->base_cmds.status = MPT2_CMD_PENDING;
3316         request = mpt2sas_base_get_msg_frame(ioc, smid);
3317         ioc->base_cmds.smid = smid;
3318         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
3319         init_completion(&ioc->base_cmds.done);
3320         mpt2sas_base_put_smid_default(ioc, smid);
3321         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3322             msecs_to_jiffies(10000));
3323         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3324                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3325                     ioc->name, __func__);
3326                 _debug_dump_mf(mpi_request,
3327                     sizeof(Mpi2SepRequest_t)/4);
3328                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3329                         issue_reset = 1;
3330                 goto issue_host_reset;
3331         }
3332         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3333                 memcpy(mpi_reply, ioc->base_cmds.reply,
3334                     sizeof(Mpi2SepReply_t));
3335         else
3336                 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
3337         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3338         goto out;
3339
3340  issue_host_reset:
3341         if (issue_reset)
3342                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3343                     FORCE_BIG_HAMMER);
3344         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3345         rc = -EFAULT;
3346  out:
3347         mutex_unlock(&ioc->base_cmds.mutex);
3348         return rc;
3349 }
3350
3351 /**
3352  * _base_get_port_facts - obtain port facts reply and save in ioc
3353  * @ioc: per adapter object
3354  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3355  *
3356  * Returns 0 for success, non-zero for failure.
3357  */
3358 static int
3359 _base_get_port_facts(struct MPT2SAS_ADAPTER *ioc, int port, int sleep_flag)
3360 {
3361         Mpi2PortFactsRequest_t mpi_request;
3362         Mpi2PortFactsReply_t mpi_reply;
3363         struct mpt2sas_port_facts *pfacts;
3364         int mpi_reply_sz, mpi_request_sz, r;
3365
3366         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3367             __func__));
3368
3369         mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
3370         mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
3371         memset(&mpi_request, 0, mpi_request_sz);
3372         mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
3373         mpi_request.PortNumber = port;
3374         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3375             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3376
3377         if (r != 0) {
3378                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3379                     ioc->name, __func__, r);
3380                 return r;
3381         }
3382
3383         pfacts = &ioc->pfacts[port];
3384         memset(pfacts, 0, sizeof(struct mpt2sas_port_facts));
3385         pfacts->PortNumber = mpi_reply.PortNumber;
3386         pfacts->VP_ID = mpi_reply.VP_ID;
3387         pfacts->VF_ID = mpi_reply.VF_ID;
3388         pfacts->MaxPostedCmdBuffers =
3389             le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
3390
3391         return 0;
3392 }
3393
3394 /**
3395  * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
3396  * @ioc: per adapter object
3397  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3398  *
3399  * Returns 0 for success, non-zero for failure.
3400  */
3401 static int
3402 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3403 {
3404         Mpi2IOCFactsRequest_t mpi_request;
3405         Mpi2IOCFactsReply_t mpi_reply;
3406         struct mpt2sas_facts *facts;
3407         int mpi_reply_sz, mpi_request_sz, r;
3408
3409         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3410             __func__));
3411
3412         mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
3413         mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
3414         memset(&mpi_request, 0, mpi_request_sz);
3415         mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
3416         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3417             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3418
3419         if (r != 0) {
3420                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3421                     ioc->name, __func__, r);
3422                 return r;
3423         }
3424
3425         facts = &ioc->facts;
3426         memset(facts, 0, sizeof(struct mpt2sas_facts));
3427         facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
3428         facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
3429         facts->VP_ID = mpi_reply.VP_ID;
3430         facts->VF_ID = mpi_reply.VF_ID;
3431         facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
3432         facts->MaxChainDepth = mpi_reply.MaxChainDepth;
3433         facts->WhoInit = mpi_reply.WhoInit;
3434         facts->NumberOfPorts = mpi_reply.NumberOfPorts;
3435         facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors;
3436         facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
3437         facts->MaxReplyDescriptorPostQueueDepth =
3438             le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
3439         facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
3440         facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
3441         if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
3442                 ioc->ir_firmware = 1;
3443         facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
3444         facts->IOCRequestFrameSize =
3445             le16_to_cpu(mpi_reply.IOCRequestFrameSize);
3446         facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
3447         facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
3448         ioc->shost->max_id = -1;
3449         facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
3450         facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
3451         facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
3452         facts->HighPriorityCredit =
3453             le16_to_cpu(mpi_reply.HighPriorityCredit);
3454         facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
3455         facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
3456
3457         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hba queue depth(%d), "
3458             "max chains per io(%d)\n", ioc->name, facts->RequestCredit,
3459             facts->MaxChainDepth));
3460         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request frame size(%d), "
3461             "reply frame size(%d)\n", ioc->name,
3462             facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
3463         return 0;
3464 }
3465
3466 /**
3467  * _base_send_ioc_init - send ioc_init to firmware
3468  * @ioc: per adapter object
3469  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3470  *
3471  * Returns 0 for success, non-zero for failure.
3472  */
3473 static int
3474 _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3475 {
3476         Mpi2IOCInitRequest_t mpi_request;
3477         Mpi2IOCInitReply_t mpi_reply;
3478         int r;
3479         struct timeval current_time;
3480         u16 ioc_status;
3481
3482         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3483             __func__));
3484
3485         memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
3486         mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
3487         mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
3488         mpi_request.VF_ID = 0; /* TODO */
3489         mpi_request.VP_ID = 0;
3490         mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
3491         mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
3492
3493         if (_base_is_controller_msix_enabled(ioc))
3494                 mpi_request.HostMSIxVectors = ioc->reply_queue_count;
3495         mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
3496         mpi_request.ReplyDescriptorPostQueueDepth =
3497             cpu_to_le16(ioc->reply_post_queue_depth);
3498         mpi_request.ReplyFreeQueueDepth =
3499             cpu_to_le16(ioc->reply_free_queue_depth);
3500
3501         mpi_request.SenseBufferAddressHigh =
3502             cpu_to_le32((u64)ioc->sense_dma >> 32);
3503         mpi_request.SystemReplyAddressHigh =
3504             cpu_to_le32((u64)ioc->reply_dma >> 32);
3505         mpi_request.SystemRequestFrameBaseAddress =
3506             cpu_to_le64((u64)ioc->request_dma);
3507         mpi_request.ReplyFreeQueueAddress =
3508             cpu_to_le64((u64)ioc->reply_free_dma);
3509         mpi_request.ReplyDescriptorPostQueueAddress =
3510             cpu_to_le64((u64)ioc->reply_post_free_dma);
3511
3512
3513         /* This time stamp specifies number of milliseconds
3514          * since epoch ~ midnight January 1, 1970.
3515          */
3516         do_gettimeofday(&current_time);
3517         mpi_request.TimeStamp = cpu_to_le64((u64)current_time.tv_sec * 1000 +
3518             (current_time.tv_usec / 1000));
3519
3520         if (ioc->logging_level & MPT_DEBUG_INIT) {
3521                 __le32 *mfp;
3522                 int i;
3523
3524                 mfp = (__le32 *)&mpi_request;
3525                 printk(KERN_INFO "\toffset:data\n");
3526                 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
3527                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3528                             le32_to_cpu(mfp[i]));
3529         }
3530
3531         r = _base_handshake_req_reply_wait(ioc,
3532             sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
3533             sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
3534             sleep_flag);
3535
3536         if (r != 0) {
3537                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3538                     ioc->name, __func__, r);
3539                 return r;
3540         }
3541
3542         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
3543         if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
3544             mpi_reply.IOCLogInfo) {
3545                 printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
3546                 r = -EIO;
3547         }
3548
3549         return 0;
3550 }
3551
3552 /**
3553  * mpt2sas_port_enable_done - command completion routine for port enable
3554  * @ioc: per adapter object
3555  * @smid: system request message index
3556  * @msix_index: MSIX table index supplied by the OS
3557  * @reply: reply message frame(lower 32bit addr)
3558  *
3559  * Return 1 meaning mf should be freed from _base_interrupt
3560  *        0 means the mf is freed from this function.
3561  */
3562 u8
3563 mpt2sas_port_enable_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3564         u32 reply)
3565 {
3566         MPI2DefaultReply_t *mpi_reply;
3567         u16 ioc_status;
3568
3569         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
3570         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
3571                 return 1;
3572
3573         if (ioc->port_enable_cmds.status == MPT2_CMD_NOT_USED)
3574                 return 1;
3575
3576         ioc->port_enable_cmds.status |= MPT2_CMD_COMPLETE;
3577         if (mpi_reply) {
3578                 ioc->port_enable_cmds.status |= MPT2_CMD_REPLY_VALID;
3579                 memcpy(ioc->port_enable_cmds.reply, mpi_reply,
3580                     mpi_reply->MsgLength*4);
3581         }
3582         ioc->port_enable_cmds.status &= ~MPT2_CMD_PENDING;
3583
3584         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3585
3586         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
3587                 ioc->port_enable_failed = 1;
3588
3589         if (ioc->is_driver_loading) {
3590                 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
3591                         mpt2sas_port_enable_complete(ioc);
3592                         return 1;
3593                 } else {
3594                         ioc->start_scan_failed = ioc_status;
3595                         ioc->start_scan = 0;
3596                         return 1;
3597                 }
3598         }
3599         complete(&ioc->port_enable_cmds.done);
3600         return 1;
3601 }
3602
3603
3604 /**
3605  * _base_send_port_enable - send port_enable(discovery stuff) to firmware
3606  * @ioc: per adapter object
3607  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3608  *
3609  * Returns 0 for success, non-zero for failure.
3610  */
3611 static int
3612 _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3613 {
3614         Mpi2PortEnableRequest_t *mpi_request;
3615         Mpi2PortEnableReply_t *mpi_reply;
3616         unsigned long timeleft;
3617         int r = 0;
3618         u16 smid;
3619         u16 ioc_status;
3620
3621         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3622
3623         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3624                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3625                     ioc->name, __func__);
3626                 return -EAGAIN;
3627         }
3628
3629         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3630         if (!smid) {
3631                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3632                     ioc->name, __func__);
3633                 return -EAGAIN;
3634         }
3635
3636         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3637         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3638         ioc->port_enable_cmds.smid = smid;
3639         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3640         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3641
3642         init_completion(&ioc->port_enable_cmds.done);
3643         mpt2sas_base_put_smid_default(ioc, smid);
3644         timeleft = wait_for_completion_timeout(&ioc->port_enable_cmds.done,
3645             300*HZ);
3646         if (!(ioc->port_enable_cmds.status & MPT2_CMD_COMPLETE)) {
3647                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3648                     ioc->name, __func__);
3649                 _debug_dump_mf(mpi_request,
3650                     sizeof(Mpi2PortEnableRequest_t)/4);
3651                 if (ioc->port_enable_cmds.status & MPT2_CMD_RESET)
3652                         r = -EFAULT;
3653                 else
3654                         r = -ETIME;
3655                 goto out;
3656         }
3657         mpi_reply = ioc->port_enable_cmds.reply;
3658
3659         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3660         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
3661                 printk(MPT2SAS_ERR_FMT "%s: failed with (ioc_status=0x%08x)\n",
3662                     ioc->name, __func__, ioc_status);
3663                 r = -EFAULT;
3664                 goto out;
3665         }
3666  out:
3667         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
3668         printk(MPT2SAS_INFO_FMT "port enable: %s\n", ioc->name, ((r == 0) ?
3669             "SUCCESS" : "FAILED"));
3670         return r;
3671 }
3672
3673 /**
3674  * mpt2sas_port_enable - initiate firmware discovery (don't wait for reply)
3675  * @ioc: per adapter object
3676  *
3677  * Returns 0 for success, non-zero for failure.
3678  */
3679 int
3680 mpt2sas_port_enable(struct MPT2SAS_ADAPTER *ioc)
3681 {
3682         Mpi2PortEnableRequest_t *mpi_request;
3683         u16 smid;
3684
3685         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3686
3687         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3688                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3689                     ioc->name, __func__);
3690                 return -EAGAIN;
3691         }
3692
3693         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3694         if (!smid) {
3695                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3696                     ioc->name, __func__);
3697                 return -EAGAIN;
3698         }
3699
3700         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3701         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3702         ioc->port_enable_cmds.smid = smid;
3703         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3704         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3705
3706         mpt2sas_base_put_smid_default(ioc, smid);
3707         return 0;
3708 }
3709
3710 /**
3711  * _base_determine_wait_on_discovery - desposition
3712  * @ioc: per adapter object
3713  *
3714  * Decide whether to wait on discovery to complete. Used to either
3715  * locate boot device, or report volumes ahead of physical devices.
3716  *
3717  * Returns 1 for wait, 0 for don't wait
3718  */
3719 static int
3720 _base_determine_wait_on_discovery(struct MPT2SAS_ADAPTER *ioc)
3721 {
3722         /* We wait for discovery to complete if IR firmware is loaded.
3723          * The sas topology events arrive before PD events, so we need time to
3724          * turn on the bit in ioc->pd_handles to indicate PD
3725          * Also, it maybe required to report Volumes ahead of physical
3726          * devices when MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING is set.
3727          */
3728         if (ioc->ir_firmware)
3729                 return 1;
3730
3731         /* if no Bios, then we don't need to wait */
3732         if (!ioc->bios_pg3.BiosVersion)
3733                 return 0;
3734
3735         /* Bios is present, then we drop down here.
3736          *
3737          * If there any entries in the Bios Page 2, then we wait
3738          * for discovery to complete.
3739          */
3740
3741         /* Current Boot Device */
3742         if ((ioc->bios_pg2.CurrentBootDeviceForm &
3743             MPI2_BIOSPAGE2_FORM_MASK) ==
3744             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3745         /* Request Boot Device */
3746            (ioc->bios_pg2.ReqBootDeviceForm &
3747             MPI2_BIOSPAGE2_FORM_MASK) ==
3748             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3749         /* Alternate Request Boot Device */
3750            (ioc->bios_pg2.ReqAltBootDeviceForm &
3751             MPI2_BIOSPAGE2_FORM_MASK) ==
3752             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED)
3753                 return 0;
3754
3755         return 1;
3756 }
3757
3758
3759 /**
3760  * _base_unmask_events - turn on notification for this event
3761  * @ioc: per adapter object
3762  * @event: firmware event
3763  *
3764  * The mask is stored in ioc->event_masks.
3765  */
3766 static void
3767 _base_unmask_events(struct MPT2SAS_ADAPTER *ioc, u16 event)
3768 {
3769         u32 desired_event;
3770
3771         if (event >= 128)
3772                 return;
3773
3774         desired_event = (1 << (event % 32));
3775
3776         if (event < 32)
3777                 ioc->event_masks[0] &= ~desired_event;
3778         else if (event < 64)
3779                 ioc->event_masks[1] &= ~desired_event;
3780         else if (event < 96)
3781                 ioc->event_masks[2] &= ~desired_event;
3782         else if (event < 128)
3783                 ioc->event_masks[3] &= ~desired_event;
3784 }
3785
3786 /**
3787  * _base_event_notification - send event notification
3788  * @ioc: per adapter object
3789  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3790  *
3791  * Returns 0 for success, non-zero for failure.
3792  */
3793 static int
3794 _base_event_notification(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3795 {
3796         Mpi2EventNotificationRequest_t *mpi_request;
3797         unsigned long timeleft;
3798         u16 smid;
3799         int r = 0;
3800         int i;
3801
3802         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3803             __func__));
3804
3805         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
3806                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3807                     ioc->name, __func__);
3808                 return -EAGAIN;
3809         }
3810
3811         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3812         if (!smid) {
3813                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3814                     ioc->name, __func__);
3815                 return -EAGAIN;
3816         }
3817         ioc->base_cmds.status = MPT2_CMD_PENDING;
3818         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3819         ioc->base_cmds.smid = smid;
3820         memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
3821         mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
3822         mpi_request->VF_ID = 0; /* TODO */
3823         mpi_request->VP_ID = 0;
3824         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
3825                 mpi_request->EventMasks[i] =
3826                     cpu_to_le32(ioc->event_masks[i]);
3827         init_completion(&ioc->base_cmds.done);
3828         mpt2sas_base_put_smid_default(ioc, smid);
3829         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
3830         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3831                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3832                     ioc->name, __func__);
3833                 _debug_dump_mf(mpi_request,
3834                     sizeof(Mpi2EventNotificationRequest_t)/4);
3835                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
3836                         r = -EFAULT;
3837                 else
3838                         r = -ETIME;
3839         } else
3840                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: complete\n",
3841                     ioc->name, __func__));
3842         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3843         return r;
3844 }
3845
3846 /**
3847  * mpt2sas_base_validate_event_type - validating event types
3848  * @ioc: per adapter object
3849  * @event: firmware event
3850  *
3851  * This will turn on firmware event notification when application
3852  * ask for that event. We don't mask events that are already enabled.
3853  */
3854 void
3855 mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type)
3856 {
3857         int i, j;
3858         u32 event_mask, desired_event;
3859         u8 send_update_to_fw;
3860
3861         for (i = 0, send_update_to_fw = 0; i <
3862             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
3863                 event_mask = ~event_type[i];
3864                 desired_event = 1;
3865                 for (j = 0; j < 32; j++) {
3866                         if (!(event_mask & desired_event) &&
3867                             (ioc->event_masks[i] & desired_event)) {
3868                                 ioc->event_masks[i] &= ~desired_event;
3869                                 send_update_to_fw = 1;
3870                         }
3871                         desired_event = (desired_event << 1);
3872                 }
3873         }
3874
3875         if (!send_update_to_fw)
3876                 return;
3877
3878         mutex_lock(&ioc->base_cmds.mutex);
3879         _base_event_notification(ioc, CAN_SLEEP);
3880         mutex_unlock(&ioc->base_cmds.mutex);
3881 }
3882
3883 /**
3884  * _base_diag_reset - the "big hammer" start of day reset
3885  * @ioc: per adapter object
3886  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3887  *
3888  * Returns 0 for success, non-zero for failure.
3889  */
3890 static int
3891 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3892 {
3893         u32 host_diagnostic;
3894         u32 ioc_state;
3895         u32 count;
3896         u32 hcb_size;
3897
3898         printk(MPT2SAS_INFO_FMT "sending diag reset !!\n", ioc->name);
3899         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "clear interrupts\n",
3900             ioc->name));
3901
3902         count = 0;
3903         do {
3904                 /* Write magic sequence to WriteSequence register
3905                  * Loop until in diagnostic mode
3906                  */
3907                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "write magic "
3908                     "sequence\n", ioc->name));
3909                 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3910                 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
3911                 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
3912                 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
3913                 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
3914                 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
3915                 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
3916
3917                 /* wait 100 msec */
3918                 if (sleep_flag == CAN_SLEEP)
3919                         msleep(100);
3920                 else
3921                         mdelay(100);
3922
3923                 if (count++ > 20)
3924                         goto out;
3925
3926                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3927                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "wrote magic "
3928                     "sequence: count(%d), host_diagnostic(0x%08x)\n",
3929                     ioc->name, count, host_diagnostic));
3930
3931         } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
3932
3933         hcb_size = readl(&ioc->chip->HCBSize);
3934
3935         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "diag reset: issued\n",
3936             ioc->name));
3937         writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
3938              &ioc->chip->HostDiagnostic);
3939
3940         /* This delay allows the chip PCIe hardware time to finish reset tasks*/
3941         if (sleep_flag == CAN_SLEEP)
3942                 msleep(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000);
3943         else
3944                 mdelay(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000);
3945
3946         /* Approximately 300 second max wait */
3947         for (count = 0; count < (300000000 /
3948             MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC); count++) {
3949
3950                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3951
3952                 if (host_diagnostic == 0xFFFFFFFF)
3953                         goto out;
3954                 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
3955                         break;
3956
3957                 /* Wait to pass the second read delay window */
3958                 if (sleep_flag == CAN_SLEEP)
3959                         msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC
3960                                /1000);
3961                 else
3962                         mdelay(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC
3963                                /1000);
3964         }
3965
3966         if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
3967
3968                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter "
3969                     "assuming the HCB Address points to good F/W\n",
3970                     ioc->name));
3971                 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
3972                 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
3973                 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
3974
3975                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT
3976                     "re-enable the HCDW\n", ioc->name));
3977                 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
3978                     &ioc->chip->HCBSize);
3979         }
3980
3981         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter\n",
3982             ioc->name));
3983         writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
3984             &ioc->chip->HostDiagnostic);
3985
3986         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "disable writes to the "
3987             "diagnostic register\n", ioc->name));
3988         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3989
3990         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "Wait for FW to go to the "
3991             "READY state\n", ioc->name));
3992         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
3993             sleep_flag);
3994         if (ioc_state) {
3995                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3996                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3997                 goto out;
3998         }
3999
4000         printk(MPT2SAS_INFO_FMT "diag reset: SUCCESS\n", ioc->name);
4001         return 0;
4002
4003  out:
4004         printk(MPT2SAS_ERR_FMT "diag reset: FAILED\n", ioc->name);
4005         return -EFAULT;
4006 }
4007
4008 /**
4009  * _base_make_ioc_ready - put controller in READY state
4010  * @ioc: per adapter object
4011  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4012  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4013  *
4014  * Returns 0 for success, non-zero for failure.
4015  */
4016 static int
4017 _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4018     enum reset_type type)
4019 {
4020         u32 ioc_state;
4021         int rc;
4022
4023         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4024             __func__));
4025
4026         if (ioc->pci_error_recovery)
4027                 return 0;
4028
4029         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4030         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: ioc_state(0x%08x)\n",
4031             ioc->name, __func__, ioc_state));
4032
4033         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
4034                 return 0;
4035
4036         if (ioc_state & MPI2_DOORBELL_USED) {
4037                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "unexpected doorbell "
4038                     "active!\n", ioc->name));
4039                 goto issue_diag_reset;
4040         }
4041
4042         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
4043                 mpt2sas_base_fault_info(ioc, ioc_state &
4044                     MPI2_DOORBELL_DATA_MASK);
4045                 goto issue_diag_reset;
4046         }
4047
4048         if (type == FORCE_BIG_HAMMER)
4049                 goto issue_diag_reset;
4050
4051         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
4052                 if (!(_base_send_ioc_reset(ioc,
4053                     MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP))) {
4054                         ioc->ioc_reset_count++;
4055                         return 0;
4056         }
4057
4058  issue_diag_reset:
4059         rc = _base_diag_reset(ioc, CAN_SLEEP);
4060         ioc->ioc_reset_count++;
4061         return rc;
4062 }
4063
4064 /**
4065  * _base_make_ioc_operational - put controller in OPERATIONAL state
4066  * @ioc: per adapter object
4067  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4068  *
4069  * Returns 0 for success, non-zero for failure.
4070  */
4071 static int
4072 _base_make_ioc_operational(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4073 {
4074         int r, i;
4075         unsigned long   flags;
4076         u32 reply_address;
4077         u16 smid;
4078         struct _tr_list *delayed_tr, *delayed_tr_next;
4079         u8 hide_flag;
4080         struct adapter_reply_queue *reply_q;
4081         long reply_post_free;
4082         u32 reply_post_free_sz;
4083
4084         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4085             __func__));
4086
4087         /* clean the delayed target reset list */
4088         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4089             &ioc->delayed_tr_list, list) {
4090                 list_del(&delayed_tr->list);
4091                 kfree(delayed_tr);
4092         }
4093
4094         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4095             &ioc->delayed_tr_volume_list, list) {
4096                 list_del(&delayed_tr->list);
4097                 kfree(delayed_tr);
4098         }
4099
4100         /* initialize the scsi lookup free list */
4101         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4102         INIT_LIST_HEAD(&ioc->free_list);
4103         smid = 1;
4104         for (i = 0; i < ioc->scsiio_depth; i++, smid++) {
4105                 INIT_LIST_HEAD(&ioc->scsi_lookup[i].chain_list);
4106                 ioc->scsi_lookup[i].cb_idx = 0xFF;
4107                 ioc->scsi_lookup[i].smid = smid;
4108                 ioc->scsi_lookup[i].scmd = NULL;
4109                 ioc->scsi_lookup[i].direct_io = 0;
4110                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
4111                     &ioc->free_list);
4112         }
4113
4114         /* hi-priority queue */
4115         INIT_LIST_HEAD(&ioc->hpr_free_list);
4116         smid = ioc->hi_priority_smid;
4117         for (i = 0; i < ioc->hi_priority_depth; i++, smid++) {
4118                 ioc->hpr_lookup[i].cb_idx = 0xFF;
4119                 ioc->hpr_lookup[i].smid = smid;
4120                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
4121                     &ioc->hpr_free_list);
4122         }
4123
4124         /* internal queue */
4125         INIT_LIST_HEAD(&ioc->internal_free_list);
4126         smid = ioc->internal_smid;
4127         for (i = 0; i < ioc->internal_depth; i++, smid++) {
4128                 ioc->internal_lookup[i].cb_idx = 0xFF;
4129                 ioc->internal_lookup[i].smid = smid;
4130                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
4131                     &ioc->internal_free_list);
4132         }
4133
4134         /* chain pool */
4135         INIT_LIST_HEAD(&ioc->free_chain_list);
4136         for (i = 0; i < ioc->chain_depth; i++)
4137                 list_add_tail(&ioc->chain_lookup[i].tracker_list,
4138                     &ioc->free_chain_list);
4139
4140         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4141
4142         /* initialize Reply Free Queue */
4143         for (i = 0, reply_address = (u32)ioc->reply_dma ;
4144             i < ioc->reply_free_queue_depth ; i++, reply_address +=
4145             ioc->reply_sz)
4146                 ioc->reply_free[i] = cpu_to_le32(reply_address);
4147
4148         /* initialize reply queues */
4149         if (ioc->is_driver_loading)
4150                 _base_assign_reply_queues(ioc);
4151
4152         /* initialize Reply Post Free Queue */
4153         reply_post_free = (long)ioc->reply_post_free;
4154         reply_post_free_sz = ioc->reply_post_queue_depth *
4155             sizeof(Mpi2DefaultReplyDescriptor_t);
4156         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4157                 reply_q->reply_post_host_index = 0;
4158                 reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *)
4159                     reply_post_free;
4160                 for (i = 0; i < ioc->reply_post_queue_depth; i++)
4161                         reply_q->reply_post_free[i].Words =
4162                                                         cpu_to_le64(ULLONG_MAX);
4163                 if (!_base_is_controller_msix_enabled(ioc))
4164                         goto skip_init_reply_post_free_queue;
4165                 reply_post_free += reply_post_free_sz;
4166         }
4167  skip_init_reply_post_free_queue:
4168
4169         r = _base_send_ioc_init(ioc, sleep_flag);
4170         if (r)
4171                 return r;
4172
4173         /* initialize reply free host index */
4174         ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
4175         writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
4176
4177         /* initialize reply post host index */
4178         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4179                 writel(reply_q->msix_index << MPI2_RPHI_MSIX_INDEX_SHIFT,
4180                     &ioc->chip->ReplyPostHostIndex);
4181                 if (!_base_is_controller_msix_enabled(ioc))
4182                         goto skip_init_reply_post_host_index;
4183         }
4184
4185  skip_init_reply_post_host_index:
4186
4187         _base_unmask_interrupts(ioc);
4188
4189         r = _base_event_notification(ioc, sleep_flag);
4190         if (r)
4191                 return r;
4192
4193         if (sleep_flag == CAN_SLEEP)
4194                 _base_static_config_pages(ioc);
4195
4196
4197         if (ioc->is_driver_loading) {
4198                 if (ioc->is_warpdrive && ioc->manu_pg10.OEMIdentifier
4199                     == 0x80) {
4200                         hide_flag = (u8) (
4201                             le32_to_cpu(ioc->manu_pg10.OEMSpecificFlags0) &
4202                             MFG_PAGE10_HIDE_SSDS_MASK);
4203                         if (hide_flag != MFG_PAGE10_HIDE_SSDS_MASK)
4204                                 ioc->mfg_pg10_hide_flag = hide_flag;
4205                 }
4206                 ioc->wait_for_discovery_to_complete =
4207                     _base_determine_wait_on_discovery(ioc);
4208                 return r; /* scan_start and scan_finished support */
4209         }
4210         r = _base_send_port_enable(ioc, sleep_flag);
4211         if (r)
4212                 return r;
4213
4214         return r;
4215 }
4216
4217 /**
4218  * mpt2sas_base_free_resources - free resources controller resources (io/irq/memap)
4219  * @ioc: per adapter object
4220  *
4221  * Return nothing.
4222  */
4223 void
4224 mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
4225 {
4226         struct pci_dev *pdev = ioc->pdev;
4227
4228         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4229             __func__));
4230
4231         if (ioc->chip_phys && ioc->chip) {
4232                 _base_mask_interrupts(ioc);
4233                 ioc->shost_recovery = 1;
4234                 _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4235                 ioc->shost_recovery = 0;
4236         }
4237
4238         _base_free_irq(ioc);
4239         _base_disable_msix(ioc);
4240
4241         if (ioc->chip_phys && ioc->chip)
4242                 iounmap(ioc->chip);
4243         ioc->chip_phys = 0;
4244
4245         if (pci_is_enabled(pdev)) {
4246                 pci_release_selected_regions(ioc->pdev, ioc->bars);
4247                 pci_disable_pcie_error_reporting(pdev);
4248                 pci_disable_device(pdev);
4249         }
4250         return;
4251 }
4252
4253 /**
4254  * mpt2sas_base_attach - attach controller instance
4255  * @ioc: per adapter object
4256  *
4257  * Returns 0 for success, non-zero for failure.
4258  */
4259 int
4260 mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
4261 {
4262         int r, i;
4263         int cpu_id, last_cpu_id = 0;
4264
4265         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4266             __func__));
4267
4268         /* setup cpu_msix_table */
4269         ioc->cpu_count = num_online_cpus();
4270         for_each_online_cpu(cpu_id)
4271                 last_cpu_id = cpu_id;
4272         ioc->cpu_msix_table_sz = last_cpu_id + 1;
4273         ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL);
4274         ioc->reply_queue_count = 1;
4275         if (!ioc->cpu_msix_table) {
4276                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation for "
4277                     "cpu_msix_table failed!!!\n", ioc->name));
4278                 r = -ENOMEM;
4279                 goto out_free_resources;
4280         }
4281
4282         if (ioc->is_warpdrive) {
4283                 ioc->reply_post_host_index = kcalloc(ioc->cpu_msix_table_sz,
4284                     sizeof(resource_size_t *), GFP_KERNEL);
4285                 if (!ioc->reply_post_host_index) {
4286                         dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation "
4287                                 "for cpu_msix_table failed!!!\n", ioc->name));
4288                         r = -ENOMEM;
4289                         goto out_free_resources;
4290                 }
4291         }
4292
4293         r = mpt2sas_base_map_resources(ioc);
4294         if (r)
4295                 goto out_free_resources;
4296
4297         if (ioc->is_warpdrive) {
4298                 ioc->reply_post_host_index[0] =
4299                     (resource_size_t *)&ioc->chip->ReplyPostHostIndex;
4300
4301                 for (i = 1; i < ioc->cpu_msix_table_sz; i++)
4302                         ioc->reply_post_host_index[i] = (resource_size_t *)
4303                         ((u8 *)&ioc->chip->Doorbell + (0x4000 + ((i - 1)
4304                         * 4)));
4305         }
4306
4307         pci_set_drvdata(ioc->pdev, ioc->shost);
4308         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
4309         if (r)
4310                 goto out_free_resources;
4311
4312         r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4313         if (r)
4314                 goto out_free_resources;
4315
4316         ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
4317             sizeof(struct mpt2sas_port_facts), GFP_KERNEL);
4318         if (!ioc->pfacts) {
4319                 r = -ENOMEM;
4320                 goto out_free_resources;
4321         }
4322
4323         for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
4324                 r = _base_get_port_facts(ioc, i, CAN_SLEEP);
4325                 if (r)
4326                         goto out_free_resources;
4327         }
4328
4329         r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
4330         if (r)
4331                 goto out_free_resources;
4332
4333         init_waitqueue_head(&ioc->reset_wq);
4334         /* allocate memory pd handle bitmask list */
4335         ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8);
4336         if (ioc->facts.MaxDevHandle % 8)
4337                 ioc->pd_handles_sz++;
4338         ioc->pd_handles = kzalloc(ioc->pd_handles_sz,
4339             GFP_KERNEL);
4340         if (!ioc->pd_handles) {
4341                 r = -ENOMEM;
4342                 goto out_free_resources;
4343         }
4344         ioc->blocking_handles = kzalloc(ioc->pd_handles_sz,
4345             GFP_KERNEL);
4346         if (!ioc->blocking_handles) {
4347                 r = -ENOMEM;
4348                 goto out_free_resources;
4349         }
4350         ioc->fwfault_debug = mpt2sas_fwfault_debug;
4351
4352         /* base internal command bits */
4353         mutex_init(&ioc->base_cmds.mutex);
4354         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4355         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
4356
4357         /* port_enable command bits */
4358         ioc->port_enable_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4359         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
4360
4361         /* transport internal command bits */
4362         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4363         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
4364         mutex_init(&ioc->transport_cmds.mutex);
4365
4366         /* scsih internal command bits */
4367         ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4368         ioc->scsih_cmds.status = MPT2_CMD_NOT_USED;
4369         mutex_init(&ioc->scsih_cmds.mutex);
4370
4371         /* task management internal command bits */
4372         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4373         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
4374         mutex_init(&ioc->tm_cmds.mutex);
4375
4376         /* config page internal command bits */
4377         ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4378         ioc->config_cmds.status = MPT2_CMD_NOT_USED;
4379         mutex_init(&ioc->config_cmds.mutex);
4380
4381         /* ctl module internal command bits */
4382         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4383         ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
4384         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
4385         mutex_init(&ioc->ctl_cmds.mutex);
4386
4387         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4388             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4389             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply ||
4390             !ioc->ctl_cmds.sense) {
4391                 r = -ENOMEM;
4392                 goto out_free_resources;
4393         }
4394
4395         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4396             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4397             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply) {
4398                 r = -ENOMEM;
4399                 goto out_free_resources;
4400         }
4401
4402         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4403                 ioc->event_masks[i] = -1;
4404
4405         /* here we enable the events we care about */
4406         _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
4407         _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
4408         _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
4409         _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4410         _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
4411         _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
4412         _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
4413         _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
4414         _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
4415         _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
4416         r = _base_make_ioc_operational(ioc, CAN_SLEEP);
4417         if (r)
4418                 goto out_free_resources;
4419
4420         ioc->non_operational_loop = 0;
4421
4422         return 0;
4423
4424  out_free_resources:
4425
4426         ioc->remove_host = 1;
4427         mpt2sas_base_free_resources(ioc);
4428         _base_release_memory_pools(ioc);
4429         pci_set_drvdata(ioc->pdev, NULL);
4430         kfree(ioc->cpu_msix_table);
4431         if (ioc->is_warpdrive)
4432                 kfree(ioc->reply_post_host_index);
4433         kfree(ioc->pd_handles);
4434         kfree(ioc->blocking_handles);
4435         kfree(ioc->tm_cmds.reply);
4436         kfree(ioc->transport_cmds.reply);
4437         kfree(ioc->scsih_cmds.reply);
4438         kfree(ioc->config_cmds.reply);
4439         kfree(ioc->base_cmds.reply);
4440         kfree(ioc->port_enable_cmds.reply);
4441         kfree(ioc->ctl_cmds.reply);
4442         kfree(ioc->ctl_cmds.sense);
4443         kfree(ioc->pfacts);
4444         ioc->ctl_cmds.reply = NULL;
4445         ioc->base_cmds.reply = NULL;
4446         ioc->tm_cmds.reply = NULL;
4447         ioc->scsih_cmds.reply = NULL;
4448         ioc->transport_cmds.reply = NULL;
4449         ioc->config_cmds.reply = NULL;
4450         ioc->pfacts = NULL;
4451         return r;
4452 }
4453
4454
4455 /**
4456  * mpt2sas_base_detach - remove controller instance
4457  * @ioc: per adapter object
4458  *
4459  * Return nothing.
4460  */
4461 void
4462 mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc)
4463 {
4464
4465         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4466             __func__));
4467
4468         mpt2sas_base_stop_watchdog(ioc);
4469         mpt2sas_base_free_resources(ioc);
4470         _base_release_memory_pools(ioc);
4471         pci_set_drvdata(ioc->pdev, NULL);
4472         kfree(ioc->cpu_msix_table);
4473         if (ioc->is_warpdrive)
4474                 kfree(ioc->reply_post_host_index);
4475         kfree(ioc->pd_handles);
4476         kfree(ioc->blocking_handles);
4477         kfree(ioc->pfacts);
4478         kfree(ioc->ctl_cmds.reply);
4479         kfree(ioc->ctl_cmds.sense);
4480         kfree(ioc->base_cmds.reply);
4481         kfree(ioc->port_enable_cmds.reply);
4482         kfree(ioc->tm_cmds.reply);
4483         kfree(ioc->transport_cmds.reply);
4484         kfree(ioc->scsih_cmds.reply);
4485         kfree(ioc->config_cmds.reply);
4486 }
4487
4488 /**
4489  * _base_reset_handler - reset callback handler (for base)
4490  * @ioc: per adapter object
4491  * @reset_phase: phase
4492  *
4493  * The handler for doing any required cleanup or initialization.
4494  *
4495  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
4496  * MPT2_IOC_DONE_RESET
4497  *
4498  * Return nothing.
4499  */
4500 static void
4501 _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
4502 {
4503         mpt2sas_scsih_reset_handler(ioc, reset_phase);
4504         mpt2sas_ctl_reset_handler(ioc, reset_phase);
4505         switch (reset_phase) {
4506         case MPT2_IOC_PRE_RESET:
4507                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4508                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
4509                 break;
4510         case MPT2_IOC_AFTER_RESET:
4511                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4512                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
4513                 if (ioc->transport_cmds.status & MPT2_CMD_PENDING) {
4514                         ioc->transport_cmds.status |= MPT2_CMD_RESET;
4515                         mpt2sas_base_free_smid(ioc, ioc->transport_cmds.smid);
4516                         complete(&ioc->transport_cmds.done);
4517                 }
4518                 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
4519                         ioc->base_cmds.status |= MPT2_CMD_RESET;
4520                         mpt2sas_base_free_smid(ioc, ioc->base_cmds.smid);
4521                         complete(&ioc->base_cmds.done);
4522                 }
4523                 if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
4524                         ioc->port_enable_failed = 1;
4525                         ioc->port_enable_cmds.status |= MPT2_CMD_RESET;
4526                         mpt2sas_base_free_smid(ioc, ioc->port_enable_cmds.smid);
4527                         if (ioc->is_driver_loading) {
4528                                 ioc->start_scan_failed =
4529                                     MPI2_IOCSTATUS_INTERNAL_ERROR;
4530                                 ioc->start_scan = 0;
4531                                 ioc->port_enable_cmds.status =
4532                                                 MPT2_CMD_NOT_USED;
4533                         } else
4534                                 complete(&ioc->port_enable_cmds.done);
4535
4536                 }
4537                 if (ioc->config_cmds.status & MPT2_CMD_PENDING) {
4538                         ioc->config_cmds.status |= MPT2_CMD_RESET;
4539                         mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid);
4540                         ioc->config_cmds.smid = USHRT_MAX;
4541                         complete(&ioc->config_cmds.done);
4542                 }
4543                 break;
4544         case MPT2_IOC_DONE_RESET:
4545                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4546                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
4547                 break;
4548         }
4549 }
4550
4551 /**
4552  * _wait_for_commands_to_complete - reset controller
4553  * @ioc: Pointer to MPT_ADAPTER structure
4554  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4555  *
4556  * This function waiting(3s) for all pending commands to complete
4557  * prior to putting controller in reset.
4558  */
4559 static void
4560 _wait_for_commands_to_complete(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4561 {
4562         u32 ioc_state;
4563         unsigned long flags;
4564         u16 i;
4565
4566         ioc->pending_io_count = 0;
4567         if (sleep_flag != CAN_SLEEP)
4568                 return;
4569
4570         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4571         if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
4572                 return;
4573
4574         /* pending command count */
4575         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4576         for (i = 0; i < ioc->scsiio_depth; i++)
4577                 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
4578                         ioc->pending_io_count++;
4579         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4580
4581         if (!ioc->pending_io_count)
4582                 return;
4583
4584         /* wait for pending commands to complete */
4585         wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ);
4586 }
4587
4588 /**
4589  * mpt2sas_base_hard_reset_handler - reset controller
4590  * @ioc: Pointer to MPT_ADAPTER structure
4591  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4592  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4593  *
4594  * Returns 0 for success, non-zero for failure.
4595  */
4596 int
4597 mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4598     enum reset_type type)
4599 {
4600         int r;
4601         unsigned long flags;
4602
4603         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
4604             __func__));
4605
4606         if (ioc->pci_error_recovery) {
4607                 printk(MPT2SAS_ERR_FMT "%s: pci error recovery reset\n",
4608                     ioc->name, __func__);
4609                 r = 0;
4610                 goto out_unlocked;
4611         }
4612
4613         if (mpt2sas_fwfault_debug)
4614                 mpt2sas_halt_firmware(ioc);
4615
4616         /* TODO - What we really should be doing is pulling
4617          * out all the code associated with NO_SLEEP; its never used.
4618          * That is legacy code from mpt fusion driver, ported over.
4619          * I will leave this BUG_ON here for now till its been resolved.
4620          */
4621         BUG_ON(sleep_flag == NO_SLEEP);
4622
4623         /* wait for an active reset in progress to complete */
4624         if (!mutex_trylock(&ioc->reset_in_progress_mutex)) {
4625                 do {
4626                         ssleep(1);
4627                 } while (ioc->shost_recovery == 1);
4628                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4629                     __func__));
4630                 return ioc->ioc_reset_in_progress_status;
4631         }
4632
4633         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4634         ioc->shost_recovery = 1;
4635         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4636
4637         _base_reset_handler(ioc, MPT2_IOC_PRE_RESET);
4638         _wait_for_commands_to_complete(ioc, sleep_flag);
4639         _base_mask_interrupts(ioc);
4640         r = _base_make_ioc_ready(ioc, sleep_flag, type);
4641         if (r)
4642                 goto out;
4643         _base_reset_handler(ioc, MPT2_IOC_AFTER_RESET);
4644
4645         /* If this hard reset is called while port enable is active, then
4646          * there is no reason to call make_ioc_operational
4647          */
4648         if (ioc->is_driver_loading && ioc->port_enable_failed) {
4649                 ioc->remove_host = 1;
4650                 r = -EFAULT;
4651                 goto out;
4652         }
4653         r = _base_make_ioc_operational(ioc, sleep_flag);
4654         if (!r)
4655                 _base_reset_handler(ioc, MPT2_IOC_DONE_RESET);
4656  out:
4657         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: %s\n",
4658             ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
4659
4660         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4661         ioc->ioc_reset_in_progress_status = r;
4662         ioc->shost_recovery = 0;
4663         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4664         mutex_unlock(&ioc->reset_in_progress_mutex);
4665
4666  out_unlocked:
4667         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4668             __func__));
4669         return r;
4670 }