drivers/scsi/mpt3sas/mpt3sas_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/mpt3sas/mpt3sas_base.c
   6  * Copyright (C) 2012-2014  LSI Corporation
   7  * Copyright (C) 2013-2014 Avago Technologies
   8  *  (mailto: MPT-FusionLinux.pdl@avagotech.com)
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * NO WARRANTY
  21  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  22  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  23  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  24  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  25  * solely responsible for determining the appropriateness of using and
  26  * distributing the Program and assumes all risks associated with its
  27  * exercise of rights under this Agreement, including but not limited to
  28  * the risks and costs of program errors, damage to or loss of data,
  29  * programs or equipment, and unavailability or interruption of operations.
  30
  31  * DISCLAIMER OF LIABILITY
  32  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  33  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  35  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  36  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  37  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  38  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  39
  40  * You should have received a copy of the GNU General Public License
  41  * along with this program; if not, write to the Free Software
  42  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  43  * USA.
  44  */
  45
  46 #include <linux/kernel.h>
  47 #include <linux/module.h>
  48 #include <linux/errno.h>
  49 #include <linux/init.h>
  50 #include <linux/slab.h>
  51 #include <linux/types.h>
  52 #include <linux/pci.h>
  53 #include <linux/kdev_t.h>
  54 #include <linux/blkdev.h>
  55 #include <linux/delay.h>
  56 #include <linux/interrupt.h>
  57 #include <linux/dma-mapping.h>
  58 #include <linux/io.h>
  59 #include <linux/time.h>
  60 #include <linux/ktime.h>
  61 #include <linux/kthread.h>
  62 #include <linux/aer.h>
  63
  64
  65 #include "mpt3sas_base.h"
  66
  67 static MPT_CALLBACK     mpt_callbacks[MPT_MAX_CALLBACKS];
  68
  69
  70 #define FAULT_POLLING_INTERVAL 1000 /* in milliseconds */
  71
  72  /* maximum controller queue depth */
  73 #define MAX_HBA_QUEUE_DEPTH     30000
  74 #define MAX_CHAIN_DEPTH         100000
  75 static int max_queue_depth = -1;
  76 module_param(max_queue_depth, int, 0);
  77 MODULE_PARM_DESC(max_queue_depth, " max controller queue depth ");
  78
  79 static int max_sgl_entries = -1;
  80 module_param(max_sgl_entries, int, 0);
  81 MODULE_PARM_DESC(max_sgl_entries, " max sg entries ");
  82
  83 static int msix_disable = -1;
  84 module_param(msix_disable, int, 0);
  85 MODULE_PARM_DESC(msix_disable, " disable msix routed interrupts (default=0)");
  86
  87 static int smp_affinity_enable = 1;
  88 module_param(smp_affinity_enable, int, S_IRUGO);
  89 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");
  90
  91 static int max_msix_vectors = -1;
  92 module_param(max_msix_vectors, int, 0);
  93 MODULE_PARM_DESC(max_msix_vectors,
  94         " max msix vectors");
  95
  96 static int mpt3sas_fwfault_debug;
  97 MODULE_PARM_DESC(mpt3sas_fwfault_debug,
  98         " enable detection of firmware fault and halt firmware - (default=0)");
  99
 100 static int
 101 _base_get_ioc_facts(struct MPT3SAS_ADAPTER *ioc);
 102
 103 /**
 104  * _scsih_set_fwfault_debug - global setting of ioc->fwfault_debug.
 105  *
 106  */
 107 static int
 108 _scsih_set_fwfault_debug(const char *val, struct kernel_param *kp)
 109 {
 110         int ret = param_set_int(val, kp);
 111         struct MPT3SAS_ADAPTER *ioc;
 112
 113         if (ret)
 114                 return ret;
 115
 116         /* global ioc spinlock to protect controller list on list operations */
 117         pr_info("setting fwfault_debug(%d)\n", mpt3sas_fwfault_debug);
 118         spin_lock(&gioc_lock);
 119         list_for_each_entry(ioc, &mpt3sas_ioc_list, list)
 120                 ioc->fwfault_debug = mpt3sas_fwfault_debug;
 121         spin_unlock(&gioc_lock);
 122         return 0;
 123 }
 124 module_param_call(mpt3sas_fwfault_debug, _scsih_set_fwfault_debug,
 125         param_get_int, &mpt3sas_fwfault_debug, 0644);
 126
 127 /**
 128  *  mpt3sas_remove_dead_ioc_func - kthread context to remove dead ioc
 129  * @arg: input argument, used to derive ioc
 130  *
 131  * Return 0 if controller is removed from pci subsystem.
 132  * Return -1 for other case.
 133  */
 134 static int mpt3sas_remove_dead_ioc_func(void *arg)
 135 {
 136         struct MPT3SAS_ADAPTER *ioc = (struct MPT3SAS_ADAPTER *)arg;
 137         struct pci_dev *pdev;
 138
 139         if ((ioc == NULL))
 140                 return -1;
 141
 142         pdev = ioc->pdev;
 143         if ((pdev == NULL))
 144                 return -1;
 145         pci_stop_and_remove_bus_device_locked(pdev);
 146         return 0;
 147 }
 148
 149 /**
 150  * _base_fault_reset_work - workq handling ioc fault conditions
 151  * @work: input argument, used to derive ioc
 152  * Context: sleep.
 153  *
 154  * Return nothing.
 155  */
 156 static void
 157 _base_fault_reset_work(struct work_struct *work)
 158 {
 159         struct MPT3SAS_ADAPTER *ioc =
 160             container_of(work, struct MPT3SAS_ADAPTER, fault_reset_work.work);
 161         unsigned long    flags;
 162         u32 doorbell;
 163         int rc;
 164         struct task_struct *p;
 165
 166
 167         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 168         if (ioc->shost_recovery || ioc->pci_error_recovery)
 169                 goto rearm_timer;
 170         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 171
 172         doorbell = mpt3sas_base_get_iocstate(ioc, 0);
 173         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_MASK) {
 174                 pr_err(MPT3SAS_FMT "SAS host is non-operational !!!!\n",
 175                     ioc->name);
 176
 177                 /* It may be possible that EEH recovery can resolve some of
 178                  * pci bus failure issues rather removing the dead ioc function
 179                  * by considering controller is in a non-operational state. So
 180                  * here priority is given to the EEH recovery. If it doesn't
 181                  * not resolve this issue, mpt3sas driver will consider this
 182                  * controller to non-operational state and remove the dead ioc
 183                  * function.
 184                  */
 185                 if (ioc->non_operational_loop++ < 5) {
 186                         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock,
 187                                                          flags);
 188                         goto rearm_timer;
 189                 }
 190
 191                 /*
 192                  * Call _scsih_flush_pending_cmds callback so that we flush all
 193                  * pending commands back to OS. This call is required to aovid
 194                  * deadlock at block layer. Dead IOC will fail to do diag reset,
 195                  * and this call is safe since dead ioc will never return any
 196                  * command back from HW.
 197                  */
 198                 ioc->schedule_dead_ioc_flush_running_cmds(ioc);
 199                 /*
 200                  * Set remove_host flag early since kernel thread will
 201                  * take some time to execute.
 202                  */
 203                 ioc->remove_host = 1;
 204                 /*Remove the Dead Host */
 205                 p = kthread_run(mpt3sas_remove_dead_ioc_func, ioc,
 206                     "%s_dead_ioc_%d", ioc->driver_name, ioc->id);
 207                 if (IS_ERR(p))
 208                         pr_err(MPT3SAS_FMT
 209                         "%s: Running mpt3sas_dead_ioc thread failed !!!!\n",
 210                         ioc->name, __func__);
 211                 else
 212                         pr_err(MPT3SAS_FMT
 213                         "%s: Running mpt3sas_dead_ioc thread success !!!!\n",
 214                         ioc->name, __func__);
 215                 return; /* don't rearm timer */
 216         }
 217
 218         ioc->non_operational_loop = 0;
 219
 220         if ((doorbell & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL) {
 221                 rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
 222                 pr_warn(MPT3SAS_FMT "%s: hard reset: %s\n", ioc->name,
 223                     __func__, (rc == 0) ? "success" : "failed");
 224                 doorbell = mpt3sas_base_get_iocstate(ioc, 0);
 225                 if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
 226                         mpt3sas_base_fault_info(ioc, doorbell &
 227                             MPI2_DOORBELL_DATA_MASK);
 228                 if (rc && (doorbell & MPI2_IOC_STATE_MASK) !=
 229                     MPI2_IOC_STATE_OPERATIONAL)
 230                         return; /* don't rearm timer */
 231         }
 232
 233         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 234  rearm_timer:
 235         if (ioc->fault_reset_work_q)
 236                 queue_delayed_work(ioc->fault_reset_work_q,
 237                     &ioc->fault_reset_work,
 238                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
 239         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 240 }
 241
 242 /**
 243  * mpt3sas_base_start_watchdog - start the fault_reset_work_q
 244  * @ioc: per adapter object
 245  * Context: sleep.
 246  *
 247  * Return nothing.
 248  */
 249 void
 250 mpt3sas_base_start_watchdog(struct MPT3SAS_ADAPTER *ioc)
 251 {
 252         unsigned long    flags;
 253
 254         if (ioc->fault_reset_work_q)
 255                 return;
 256
 257         /* initialize fault polling */
 258
 259         INIT_DELAYED_WORK(&ioc->fault_reset_work, _base_fault_reset_work);
 260         snprintf(ioc->fault_reset_work_q_name,
 261             sizeof(ioc->fault_reset_work_q_name), "poll_%s%d_status",
 262             ioc->driver_name, ioc->id);
 263         ioc->fault_reset_work_q =
 264                 create_singlethread_workqueue(ioc->fault_reset_work_q_name);
 265         if (!ioc->fault_reset_work_q) {
 266                 pr_err(MPT3SAS_FMT "%s: failed (line=%d)\n",
 267                     ioc->name, __func__, __LINE__);
 268                         return;
 269         }
 270         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 271         if (ioc->fault_reset_work_q)
 272                 queue_delayed_work(ioc->fault_reset_work_q,
 273                     &ioc->fault_reset_work,
 274                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
 275         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 276 }
 277
 278 /**
 279  * mpt3sas_base_stop_watchdog - stop the fault_reset_work_q
 280  * @ioc: per adapter object
 281  * Context: sleep.
 282  *
 283  * Return nothing.
 284  */
 285 void
 286 mpt3sas_base_stop_watchdog(struct MPT3SAS_ADAPTER *ioc)
 287 {
 288         unsigned long flags;
 289         struct workqueue_struct *wq;
 290
 291         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 292         wq = ioc->fault_reset_work_q;
 293         ioc->fault_reset_work_q = NULL;
 294         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 295         if (wq) {
 296                 if (!cancel_delayed_work_sync(&ioc->fault_reset_work))
 297                         flush_workqueue(wq);
 298                 destroy_workqueue(wq);
 299         }
 300 }
 301
 302 /**
 303  * mpt3sas_base_fault_info - verbose translation of firmware FAULT code
 304  * @ioc: per adapter object
 305  * @fault_code: fault code
 306  *
 307  * Return nothing.
 308  */
 309 void
 310 mpt3sas_base_fault_info(struct MPT3SAS_ADAPTER *ioc , u16 fault_code)
 311 {
 312         pr_err(MPT3SAS_FMT "fault_state(0x%04x)!\n",
 313             ioc->name, fault_code);
 314 }
 315
 316 /**
 317  * mpt3sas_halt_firmware - halt's mpt controller firmware
 318  * @ioc: per adapter object
 319  *
 320  * For debugging timeout related issues.  Writing 0xCOFFEE00
 321  * to the doorbell register will halt controller firmware. With
 322  * the purpose to stop both driver and firmware, the enduser can
 323  * obtain a ring buffer from controller UART.
 324  */
 325 void
 326 mpt3sas_halt_firmware(struct MPT3SAS_ADAPTER *ioc)
 327 {
 328         u32 doorbell;
 329
 330         if (!ioc->fwfault_debug)
 331                 return;
 332
 333         dump_stack();
 334
 335         doorbell = readl(&ioc->chip->Doorbell);
 336         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
 337                 mpt3sas_base_fault_info(ioc , doorbell);
 338         else {
 339                 writel(0xC0FFEE00, &ioc->chip->Doorbell);
 340                 pr_err(MPT3SAS_FMT "Firmware is halted due to command timeout\n",
 341                         ioc->name);
 342         }
 343
 344         if (ioc->fwfault_debug == 2)
 345                 for (;;)
 346                         ;
 347         else
 348                 panic("panic in %s\n", __func__);
 349 }
 350
 351 /**
 352  * _base_sas_ioc_info - verbose translation of the ioc status
 353  * @ioc: per adapter object
 354  * @mpi_reply: reply mf payload returned from firmware
 355  * @request_hdr: request mf
 356  *
 357  * Return nothing.
 358  */
 359 static void
 360 _base_sas_ioc_info(struct MPT3SAS_ADAPTER *ioc, MPI2DefaultReply_t *mpi_reply,
 361         MPI2RequestHeader_t *request_hdr)
 362 {
 363         u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
 364             MPI2_IOCSTATUS_MASK;
 365         char *desc = NULL;
 366         u16 frame_sz;
 367         char *func_str = NULL;
 368
 369         /* SCSI_IO, RAID_PASS are handled from _scsih_scsi_ioc_info */
 370         if (request_hdr->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 371             request_hdr->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
 372             request_hdr->Function == MPI2_FUNCTION_EVENT_NOTIFICATION)
 373                 return;
 374
 375         if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
 376                 return;
 377
 378         switch (ioc_status) {
 379
 380 /****************************************************************************
 381 *  Common IOCStatus values for all replies
 382 ****************************************************************************/
 383
 384         case MPI2_IOCSTATUS_INVALID_FUNCTION:
 385                 desc = "invalid function";
 386                 break;
 387         case MPI2_IOCSTATUS_BUSY:
 388                 desc = "busy";
 389                 break;
 390         case MPI2_IOCSTATUS_INVALID_SGL:
 391                 desc = "invalid sgl";
 392                 break;
 393         case MPI2_IOCSTATUS_INTERNAL_ERROR:
 394                 desc = "internal error";
 395                 break;
 396         case MPI2_IOCSTATUS_INVALID_VPID:
 397                 desc = "invalid vpid";
 398                 break;
 399         case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
 400                 desc = "insufficient resources";
 401                 break;
 402         case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
 403                 desc = "insufficient power";
 404                 break;
 405         case MPI2_IOCSTATUS_INVALID_FIELD:
 406                 desc = "invalid field";
 407                 break;
 408         case MPI2_IOCSTATUS_INVALID_STATE:
 409                 desc = "invalid state";
 410                 break;
 411         case MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED:
 412                 desc = "op state not supported";
 413                 break;
 414
 415 /****************************************************************************
 416 *  Config IOCStatus values
 417 ****************************************************************************/
 418
 419         case MPI2_IOCSTATUS_CONFIG_INVALID_ACTION:
 420                 desc = "config invalid action";
 421                 break;
 422         case MPI2_IOCSTATUS_CONFIG_INVALID_TYPE:
 423                 desc = "config invalid type";
 424                 break;
 425         case MPI2_IOCSTATUS_CONFIG_INVALID_PAGE:
 426                 desc = "config invalid page";
 427                 break;
 428         case MPI2_IOCSTATUS_CONFIG_INVALID_DATA:
 429                 desc = "config invalid data";
 430                 break;
 431         case MPI2_IOCSTATUS_CONFIG_NO_DEFAULTS:
 432                 desc = "config no defaults";
 433                 break;
 434         case MPI2_IOCSTATUS_CONFIG_CANT_COMMIT:
 435                 desc = "config cant commit";
 436                 break;
 437
 438 /****************************************************************************
 439 *  SCSI IO Reply
 440 ****************************************************************************/
 441
 442         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
 443         case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
 444         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
 445         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
 446         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
 447         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
 448         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
 449         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
 450         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
 451         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
 452         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
 453         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
 454                 break;
 455
 456 /****************************************************************************
 457 *  For use by SCSI Initiator and SCSI Target end-to-end data protection
 458 ****************************************************************************/
 459
 460         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
 461                 desc = "eedp guard error";
 462                 break;
 463         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
 464                 desc = "eedp ref tag error";
 465                 break;
 466         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
 467                 desc = "eedp app tag error";
 468                 break;
 469
 470 /****************************************************************************
 471 *  SCSI Target values
 472 ****************************************************************************/
 473
 474         case MPI2_IOCSTATUS_TARGET_INVALID_IO_INDEX:
 475                 desc = "target invalid io index";
 476                 break;
 477         case MPI2_IOCSTATUS_TARGET_ABORTED:
 478                 desc = "target aborted";
 479                 break;
 480         case MPI2_IOCSTATUS_TARGET_NO_CONN_RETRYABLE:
 481                 desc = "target no conn retryable";
 482                 break;
 483         case MPI2_IOCSTATUS_TARGET_NO_CONNECTION:
 484                 desc = "target no connection";
 485                 break;
 486         case MPI2_IOCSTATUS_TARGET_XFER_COUNT_MISMATCH:
 487                 desc = "target xfer count mismatch";
 488                 break;
 489         case MPI2_IOCSTATUS_TARGET_DATA_OFFSET_ERROR:
 490                 desc = "target data offset error";
 491                 break;
 492         case MPI2_IOCSTATUS_TARGET_TOO_MUCH_WRITE_DATA:
 493                 desc = "target too much write data";
 494                 break;
 495         case MPI2_IOCSTATUS_TARGET_IU_TOO_SHORT:
 496                 desc = "target iu too short";
 497                 break;
 498         case MPI2_IOCSTATUS_TARGET_ACK_NAK_TIMEOUT:
 499                 desc = "target ack nak timeout";
 500                 break;
 501         case MPI2_IOCSTATUS_TARGET_NAK_RECEIVED:
 502                 desc = "target nak received";
 503                 break;
 504
 505 /****************************************************************************
 506 *  Serial Attached SCSI values
 507 ****************************************************************************/
 508
 509         case MPI2_IOCSTATUS_SAS_SMP_REQUEST_FAILED:
 510                 desc = "smp request failed";
 511                 break;
 512         case MPI2_IOCSTATUS_SAS_SMP_DATA_OVERRUN:
 513                 desc = "smp data overrun";
 514                 break;
 515
 516 /****************************************************************************
 517 *  Diagnostic Buffer Post / Diagnostic Release values
 518 ****************************************************************************/
 519
 520         case MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED:
 521                 desc = "diagnostic released";
 522                 break;
 523         default:
 524                 break;
 525         }
 526
 527         if (!desc)
 528                 return;
 529
 530         switch (request_hdr->Function) {
 531         case MPI2_FUNCTION_CONFIG:
 532                 frame_sz = sizeof(Mpi2ConfigRequest_t) + ioc->sge_size;
 533                 func_str = "config_page";
 534                 break;
 535         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 536                 frame_sz = sizeof(Mpi2SCSITaskManagementRequest_t);
 537                 func_str = "task_mgmt";
 538                 break;
 539         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 540                 frame_sz = sizeof(Mpi2SasIoUnitControlRequest_t);
 541                 func_str = "sas_iounit_ctl";
 542                 break;
 543         case MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR:
 544                 frame_sz = sizeof(Mpi2SepRequest_t);
 545                 func_str = "enclosure";
 546                 break;
 547         case MPI2_FUNCTION_IOC_INIT:
 548                 frame_sz = sizeof(Mpi2IOCInitRequest_t);
 549                 func_str = "ioc_init";
 550                 break;
 551         case MPI2_FUNCTION_PORT_ENABLE:
 552                 frame_sz = sizeof(Mpi2PortEnableRequest_t);
 553                 func_str = "port_enable";
 554                 break;
 555         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 556                 frame_sz = sizeof(Mpi2SmpPassthroughRequest_t) + ioc->sge_size;
 557                 func_str = "smp_passthru";
 558                 break;
 559         default:
 560                 frame_sz = 32;
 561                 func_str = "unknown";
 562                 break;
 563         }
 564
 565         pr_warn(MPT3SAS_FMT "ioc_status: %s(0x%04x), request(0x%p),(%s)\n",
 566                 ioc->name, desc, ioc_status, request_hdr, func_str);
 567
 568         _debug_dump_mf(request_hdr, frame_sz/4);
 569 }
 570
 571 /**
 572  * _base_display_event_data - verbose translation of firmware asyn events
 573  * @ioc: per adapter object
 574  * @mpi_reply: reply mf payload returned from firmware
 575  *
 576  * Return nothing.
 577  */
 578 static void
 579 _base_display_event_data(struct MPT3SAS_ADAPTER *ioc,
 580         Mpi2EventNotificationReply_t *mpi_reply)
 581 {
 582         char *desc = NULL;
 583         u16 event;
 584
 585         if (!(ioc->logging_level & MPT_DEBUG_EVENTS))
 586                 return;
 587
 588         event = le16_to_cpu(mpi_reply->Event);
 589
 590         switch (event) {
 591         case MPI2_EVENT_LOG_DATA:
 592                 desc = "Log Data";
 593                 break;
 594         case MPI2_EVENT_STATE_CHANGE:
 595                 desc = "Status Change";
 596                 break;
 597         case MPI2_EVENT_HARD_RESET_RECEIVED:
 598                 desc = "Hard Reset Received";
 599                 break;
 600         case MPI2_EVENT_EVENT_CHANGE:
 601                 desc = "Event Change";
 602                 break;
 603         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
 604                 desc = "Device Status Change";
 605                 break;
 606         case MPI2_EVENT_IR_OPERATION_STATUS:
 607                 if (!ioc->hide_ir_msg)
 608                         desc = "IR Operation Status";
 609                 break;
 610         case MPI2_EVENT_SAS_DISCOVERY:
 611         {
 612                 Mpi2EventDataSasDiscovery_t *event_data =
 613                     (Mpi2EventDataSasDiscovery_t *)mpi_reply->EventData;
 614                 pr_info(MPT3SAS_FMT "Discovery: (%s)", ioc->name,
 615                     (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
 616                     "start" : "stop");
 617                 if (event_data->DiscoveryStatus)
 618                         pr_info("discovery_status(0x%08x)",
 619                             le32_to_cpu(event_data->DiscoveryStatus));
 620                         pr_info("\n");
 621                 return;
 622         }
 623         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
 624                 desc = "SAS Broadcast Primitive";
 625                 break;
 626         case MPI2_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE:
 627                 desc = "SAS Init Device Status Change";
 628                 break;
 629         case MPI2_EVENT_SAS_INIT_TABLE_OVERFLOW:
 630                 desc = "SAS Init Table Overflow";
 631                 break;
 632         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
 633                 desc = "SAS Topology Change List";
 634                 break;
 635         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
 636                 desc = "SAS Enclosure Device Status Change";
 637                 break;
 638         case MPI2_EVENT_IR_VOLUME:
 639                 if (!ioc->hide_ir_msg)
 640                         desc = "IR Volume";
 641                 break;
 642         case MPI2_EVENT_IR_PHYSICAL_DISK:
 643                 if (!ioc->hide_ir_msg)
 644                         desc = "IR Physical Disk";
 645                 break;
 646         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
 647                 if (!ioc->hide_ir_msg)
 648                         desc = "IR Configuration Change List";
 649                 break;
 650         case MPI2_EVENT_LOG_ENTRY_ADDED:
 651                 if (!ioc->hide_ir_msg)
 652                         desc = "Log Entry Added";
 653                 break;
 654         case MPI2_EVENT_TEMP_THRESHOLD:
 655                 desc = "Temperature Threshold";
 656                 break;
 657         case MPI2_EVENT_ACTIVE_CABLE_EXCEPTION:
 658                 desc = "Active cable exception";
 659                 break;
 660         }
 661
 662         if (!desc)
 663                 return;
 664
 665         pr_info(MPT3SAS_FMT "%s\n", ioc->name, desc);
 666 }
 667
 668 /**
 669  * _base_sas_log_info - verbose translation of firmware log info
 670  * @ioc: per adapter object
 671  * @log_info: log info
 672  *
 673  * Return nothing.
 674  */
 675 static void
 676 _base_sas_log_info(struct MPT3SAS_ADAPTER *ioc , u32 log_info)
 677 {
 678         union loginfo_type {
 679                 u32     loginfo;
 680                 struct {
 681                         u32     subcode:16;
 682                         u32     code:8;
 683                         u32     originator:4;
 684                         u32     bus_type:4;
 685                 } dw;
 686         };
 687         union loginfo_type sas_loginfo;
 688         char *originator_str = NULL;
 689
 690         sas_loginfo.loginfo = log_info;
 691         if (sas_loginfo.dw.bus_type != 3 /*SAS*/)
 692                 return;
 693
 694         /* each nexus loss loginfo */
 695         if (log_info == 0x31170000)
 696                 return;
 697
 698         /* eat the loginfos associated with task aborts */
 699         if (ioc->ignore_loginfos && (log_info == 0x30050000 || log_info ==
 700             0x31140000 || log_info == 0x31130000))
 701                 return;
 702
 703         switch (sas_loginfo.dw.originator) {
 704         case 0:
 705                 originator_str = "IOP";
 706                 break;
 707         case 1:
 708                 originator_str = "PL";
 709                 break;
 710         case 2:
 711                 if (!ioc->hide_ir_msg)
 712                         originator_str = "IR";
 713                 else
 714                         originator_str = "WarpDrive";
 715                 break;
 716         }
 717
 718         pr_warn(MPT3SAS_FMT
 719                 "log_info(0x%08x): originator(%s), code(0x%02x), sub_code(0x%04x)\n",
 720                 ioc->name, log_info,
 721              originator_str, sas_loginfo.dw.code,
 722              sas_loginfo.dw.subcode);
 723 }
 724
 725 /**
 726  * _base_display_reply_info -
 727  * @ioc: per adapter object
 728  * @smid: system request message index
 729  * @msix_index: MSIX table index supplied by the OS
 730  * @reply: reply message frame(lower 32bit addr)
 731  *
 732  * Return nothing.
 733  */
 734 static void
 735 _base_display_reply_info(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 736         u32 reply)
 737 {
 738         MPI2DefaultReply_t *mpi_reply;
 739         u16 ioc_status;
 740         u32 loginfo = 0;
 741
 742         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
 743         if (unlikely(!mpi_reply)) {
 744                 pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
 745                     ioc->name, __FILE__, __LINE__, __func__);
 746                 return;
 747         }
 748         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
 749
 750         if ((ioc_status & MPI2_IOCSTATUS_MASK) &&
 751             (ioc->logging_level & MPT_DEBUG_REPLY)) {
 752                 _base_sas_ioc_info(ioc , mpi_reply,
 753                    mpt3sas_base_get_msg_frame(ioc, smid));
 754         }
 755
 756         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE) {
 757                 loginfo = le32_to_cpu(mpi_reply->IOCLogInfo);
 758                 _base_sas_log_info(ioc, loginfo);
 759         }
 760
 761         if (ioc_status || loginfo) {
 762                 ioc_status &= MPI2_IOCSTATUS_MASK;
 763                 mpt3sas_trigger_mpi(ioc, ioc_status, loginfo);
 764         }
 765 }
 766
 767 /**
 768  * mpt3sas_base_done - base internal command completion routine
 769  * @ioc: per adapter object
 770  * @smid: system request message index
 771  * @msix_index: MSIX table index supplied by the OS
 772  * @reply: reply message frame(lower 32bit addr)
 773  *
 774  * Return 1 meaning mf should be freed from _base_interrupt
 775  *        0 means the mf is freed from this function.
 776  */
 777 u8
 778 mpt3sas_base_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 779         u32 reply)
 780 {
 781         MPI2DefaultReply_t *mpi_reply;
 782
 783         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
 784         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
 785                 return mpt3sas_check_for_pending_internal_cmds(ioc, smid);
 786
 787         if (ioc->base_cmds.status == MPT3_CMD_NOT_USED)
 788                 return 1;
 789
 790         ioc->base_cmds.status |= MPT3_CMD_COMPLETE;
 791         if (mpi_reply) {
 792                 ioc->base_cmds.status |= MPT3_CMD_REPLY_VALID;
 793                 memcpy(ioc->base_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 794         }
 795         ioc->base_cmds.status &= ~MPT3_CMD_PENDING;
 796
 797         complete(&ioc->base_cmds.done);
 798         return 1;
 799 }
 800
 801 /**
 802  * _base_async_event - main callback handler for firmware asyn events
 803  * @ioc: per adapter object
 804  * @msix_index: MSIX table index supplied by the OS
 805  * @reply: reply message frame(lower 32bit addr)
 806  *
 807  * Return 1 meaning mf should be freed from _base_interrupt
 808  *        0 means the mf is freed from this function.
 809  */
 810 static u8
 811 _base_async_event(struct MPT3SAS_ADAPTER *ioc, u8 msix_index, u32 reply)
 812 {
 813         Mpi2EventNotificationReply_t *mpi_reply;
 814         Mpi2EventAckRequest_t *ack_request;
 815         u16 smid;
 816         struct _event_ack_list *delayed_event_ack;
 817
 818         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
 819         if (!mpi_reply)
 820                 return 1;
 821         if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION)
 822                 return 1;
 823
 824         _base_display_event_data(ioc, mpi_reply);
 825
 826         if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED))
 827                 goto out;
 828         smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx);
 829         if (!smid) {
 830                 delayed_event_ack = kzalloc(sizeof(*delayed_event_ack),
 831                                         GFP_ATOMIC);
 832                 if (!delayed_event_ack)
 833                         goto out;
 834                 INIT_LIST_HEAD(&delayed_event_ack->list);
 835                 delayed_event_ack->Event = mpi_reply->Event;
 836                 delayed_event_ack->EventContext = mpi_reply->EventContext;
 837                 list_add_tail(&delayed_event_ack->list,
 838                                 &ioc->delayed_event_ack_list);
 839                 dewtprintk(ioc, pr_info(MPT3SAS_FMT
 840                                 "DELAYED: EVENT ACK: event (0x%04x)\n",
 841                                 ioc->name, le16_to_cpu(mpi_reply->Event)));
 842                 goto out;
 843         }
 844
 845         ack_request = mpt3sas_base_get_msg_frame(ioc, smid);
 846         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
 847         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
 848         ack_request->Event = mpi_reply->Event;
 849         ack_request->EventContext = mpi_reply->EventContext;
 850         ack_request->VF_ID = 0;  /* TODO */
 851         ack_request->VP_ID = 0;
 852         mpt3sas_base_put_smid_default(ioc, smid);
 853
 854  out:
 855
 856         /* scsih callback handler */
 857         mpt3sas_scsih_event_callback(ioc, msix_index, reply);
 858
 859         /* ctl callback handler */
 860         mpt3sas_ctl_event_callback(ioc, msix_index, reply);
 861
 862         return 1;
 863 }
 864
 865 /**
 866  * _base_get_cb_idx - obtain the callback index
 867  * @ioc: per adapter object
 868  * @smid: system request message index
 869  *
 870  * Return callback index.
 871  */
 872 static u8
 873 _base_get_cb_idx(struct MPT3SAS_ADAPTER *ioc, u16 smid)
 874 {
 875         int i;
 876         u8 cb_idx;
 877
 878         if (smid < ioc->hi_priority_smid) {
 879                 i = smid - 1;
 880                 cb_idx = ioc->scsi_lookup[i].cb_idx;
 881         } else if (smid < ioc->internal_smid) {
 882                 i = smid - ioc->hi_priority_smid;
 883                 cb_idx = ioc->hpr_lookup[i].cb_idx;
 884         } else if (smid <= ioc->hba_queue_depth) {
 885                 i = smid - ioc->internal_smid;
 886                 cb_idx = ioc->internal_lookup[i].cb_idx;
 887         } else
 888                 cb_idx = 0xFF;
 889         return cb_idx;
 890 }
 891
 892 /**
 893  * _base_mask_interrupts - disable interrupts
 894  * @ioc: per adapter object
 895  *
 896  * Disabling ResetIRQ, Reply and Doorbell Interrupts
 897  *
 898  * Return nothing.
 899  */
 900 static void
 901 _base_mask_interrupts(struct MPT3SAS_ADAPTER *ioc)
 902 {
 903         u32 him_register;
 904
 905         ioc->mask_interrupts = 1;
 906         him_register = readl(&ioc->chip->HostInterruptMask);
 907         him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK;
 908         writel(him_register, &ioc->chip->HostInterruptMask);
 909         readl(&ioc->chip->HostInterruptMask);
 910 }
 911
 912 /**
 913  * _base_unmask_interrupts - enable interrupts
 914  * @ioc: per adapter object
 915  *
 916  * Enabling only Reply Interrupts
 917  *
 918  * Return nothing.
 919  */
 920 static void
 921 _base_unmask_interrupts(struct MPT3SAS_ADAPTER *ioc)
 922 {
 923         u32 him_register;
 924
 925         him_register = readl(&ioc->chip->HostInterruptMask);
 926         him_register &= ~MPI2_HIM_RIM;
 927         writel(him_register, &ioc->chip->HostInterruptMask);
 928         ioc->mask_interrupts = 0;
 929 }
 930
 931 union reply_descriptor {
 932         u64 word;
 933         struct {
 934                 u32 low;
 935                 u32 high;
 936         } u;
 937 };
 938
 939 /**
 940  * _base_interrupt - MPT adapter (IOC) specific interrupt handler.
 941  * @irq: irq number (not used)
 942  * @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure
 943  * @r: pt_regs pointer (not used)
 944  *
 945  * Return IRQ_HANDLE if processed, else IRQ_NONE.
 946  */
 947 static irqreturn_t
 948 _base_interrupt(int irq, void *bus_id)
 949 {
 950         struct adapter_reply_queue *reply_q = bus_id;
 951         union reply_descriptor rd;
 952         u32 completed_cmds;
 953         u8 request_desript_type;
 954         u16 smid;
 955         u8 cb_idx;
 956         u32 reply;
 957         u8 msix_index = reply_q->msix_index;
 958         struct MPT3SAS_ADAPTER *ioc = reply_q->ioc;
 959         Mpi2ReplyDescriptorsUnion_t *rpf;
 960         u8 rc;
 961
 962         if (ioc->mask_interrupts)
 963                 return IRQ_NONE;
 964
 965         if (!atomic_add_unless(&reply_q->busy, 1, 1))
 966                 return IRQ_NONE;
 967
 968         rpf = &reply_q->reply_post_free[reply_q->reply_post_host_index];
 969         request_desript_type = rpf->Default.ReplyFlags
 970              & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 971         if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) {
 972                 atomic_dec(&reply_q->busy);
 973                 return IRQ_NONE;
 974         }
 975
 976         completed_cmds = 0;
 977         cb_idx = 0xFF;
 978         do {
 979                 rd.word = le64_to_cpu(rpf->Words);
 980                 if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX)
 981                         goto out;
 982                 reply = 0;
 983                 smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1);
 984                 if (request_desript_type ==
 985                     MPI25_RPY_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO_SUCCESS ||
 986                     request_desript_type ==
 987                     MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
 988                         cb_idx = _base_get_cb_idx(ioc, smid);
 989                         if ((likely(cb_idx < MPT_MAX_CALLBACKS)) &&
 990                             (likely(mpt_callbacks[cb_idx] != NULL))) {
 991                                 rc = mpt_callbacks[cb_idx](ioc, smid,
 992                                     msix_index, 0);
 993                                 if (rc)
 994                                         mpt3sas_base_free_smid(ioc, smid);
 995                         }
 996                 } else if (request_desript_type ==
 997                     MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
 998                         reply = le32_to_cpu(
 999                             rpf->AddressReply.ReplyFrameAddress);
1000                         if (reply > ioc->reply_dma_max_address ||
1001                             reply < ioc->reply_dma_min_address)
1002                                 reply = 0;
1003                         if (smid) {
1004                                 cb_idx = _base_get_cb_idx(ioc, smid);
1005                                 if ((likely(cb_idx < MPT_MAX_CALLBACKS)) &&
1006                                     (likely(mpt_callbacks[cb_idx] != NULL))) {
1007                                         rc = mpt_callbacks[cb_idx](ioc, smid,
1008                                             msix_index, reply);
1009                                         if (reply)
1010                                                 _base_display_reply_info(ioc,
1011                                                     smid, msix_index, reply);
1012                                         if (rc)
1013                                                 mpt3sas_base_free_smid(ioc,
1014                                                     smid);
1015                                 }
1016                         } else {
1017                                 _base_async_event(ioc, msix_index, reply);
1018                         }
1019
1020                         /* reply free queue handling */
1021                         if (reply) {
1022                                 ioc->reply_free_host_index =
1023                                     (ioc->reply_free_host_index ==
1024                                     (ioc->reply_free_queue_depth - 1)) ?
1025                                     0 : ioc->reply_free_host_index + 1;
1026                                 ioc->reply_free[ioc->reply_free_host_index] =
1027                                     cpu_to_le32(reply);
1028                                 wmb();
1029                                 writel(ioc->reply_free_host_index,
1030                                     &ioc->chip->ReplyFreeHostIndex);
1031                         }
1032                 }
1033
1034                 rpf->Words = cpu_to_le64(ULLONG_MAX);
1035                 reply_q->reply_post_host_index =
1036                     (reply_q->reply_post_host_index ==
1037                     (ioc->reply_post_queue_depth - 1)) ? 0 :
1038                     reply_q->reply_post_host_index + 1;
1039                 request_desript_type =
1040                     reply_q->reply_post_free[reply_q->reply_post_host_index].
1041                     Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1042                 completed_cmds++;
1043                 if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1044                         goto out;
1045                 if (!reply_q->reply_post_host_index)
1046                         rpf = reply_q->reply_post_free;
1047                 else
1048                         rpf++;
1049         } while (1);
1050
1051  out:
1052
1053         if (!completed_cmds) {
1054                 atomic_dec(&reply_q->busy);
1055                 return IRQ_NONE;
1056         }
1057
1058         wmb();
1059         if (ioc->is_warpdrive) {
1060                 writel(reply_q->reply_post_host_index,
1061                 ioc->reply_post_host_index[msix_index]);
1062                 atomic_dec(&reply_q->busy);
1063                 return IRQ_HANDLED;
1064         }
1065
1066         /* Update Reply Post Host Index.
1067          * For those HBA's which support combined reply queue feature
1068          * 1. Get the correct Supplemental Reply Post Host Index Register.
1069          *    i.e. (msix_index / 8)th entry from Supplemental Reply Post Host
1070          *    Index Register address bank i.e replyPostRegisterIndex[],
1071          * 2. Then update this register with new reply host index value
1072          *    in ReplyPostIndex field and the MSIxIndex field with
1073          *    msix_index value reduced to a value between 0 and 7,
1074          *    using a modulo 8 operation. Since each Supplemental Reply Post
1075          *    Host Index Register supports 8 MSI-X vectors.
1076          *
1077          * For other HBA's just update the Reply Post Host Index register with
1078          * new reply host index value in ReplyPostIndex Field and msix_index
1079          * value in MSIxIndex field.
1080          */
1081         if (ioc->msix96_vector)
1082                 writel(reply_q->reply_post_host_index | ((msix_index  & 7) <<
1083                         MPI2_RPHI_MSIX_INDEX_SHIFT),
1084                         ioc->replyPostRegisterIndex[msix_index/8]);
1085         else
1086                 writel(reply_q->reply_post_host_index | (msix_index <<
1087                         MPI2_RPHI_MSIX_INDEX_SHIFT),
1088                         &ioc->chip->ReplyPostHostIndex);
1089         atomic_dec(&reply_q->busy);
1090         return IRQ_HANDLED;
1091 }
1092
1093 /**
1094  * _base_is_controller_msix_enabled - is controller support muli-reply queues
1095  * @ioc: per adapter object
1096  *
1097  */
1098 static inline int
1099 _base_is_controller_msix_enabled(struct MPT3SAS_ADAPTER *ioc)
1100 {
1101         return (ioc->facts.IOCCapabilities &
1102             MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable;
1103 }
1104
1105 /**
1106  * mpt3sas_base_sync_reply_irqs - flush pending MSIX interrupts
1107  * @ioc: per adapter object
1108  * Context: non ISR conext
1109  *
1110  * Called when a Task Management request has completed.
1111  *
1112  * Return nothing.
1113  */
1114 void
1115 mpt3sas_base_sync_reply_irqs(struct MPT3SAS_ADAPTER *ioc)
1116 {
1117         struct adapter_reply_queue *reply_q;
1118
1119         /* If MSIX capability is turned off
1120          * then multi-queues are not enabled
1121          */
1122         if (!_base_is_controller_msix_enabled(ioc))
1123                 return;
1124
1125         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
1126                 if (ioc->shost_recovery || ioc->remove_host ||
1127                                 ioc->pci_error_recovery)
1128                         return;
1129                 /* TMs are on msix_index == 0 */
1130                 if (reply_q->msix_index == 0)
1131                         continue;
1132                 synchronize_irq(reply_q->vector);
1133         }
1134 }
1135
1136 /**
1137  * mpt3sas_base_release_callback_handler - clear interrupt callback handler
1138  * @cb_idx: callback index
1139  *
1140  * Return nothing.
1141  */
1142 void
1143 mpt3sas_base_release_callback_handler(u8 cb_idx)
1144 {
1145         mpt_callbacks[cb_idx] = NULL;
1146 }
1147
1148 /**
1149  * mpt3sas_base_register_callback_handler - obtain index for the interrupt callback handler
1150  * @cb_func: callback function
1151  *
1152  * Returns cb_func.
1153  */
1154 u8
1155 mpt3sas_base_register_callback_handler(MPT_CALLBACK cb_func)
1156 {
1157         u8 cb_idx;
1158
1159         for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--)
1160                 if (mpt_callbacks[cb_idx] == NULL)
1161                         break;
1162
1163         mpt_callbacks[cb_idx] = cb_func;
1164         return cb_idx;
1165 }
1166
1167 /**
1168  * mpt3sas_base_initialize_callback_handler - initialize the interrupt callback handler
1169  *
1170  * Return nothing.
1171  */
1172 void
1173 mpt3sas_base_initialize_callback_handler(void)
1174 {
1175         u8 cb_idx;
1176
1177         for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++)
1178                 mpt3sas_base_release_callback_handler(cb_idx);
1179 }
1180
1181
1182 /**
1183  * _base_build_zero_len_sge - build zero length sg entry
1184  * @ioc: per adapter object
1185  * @paddr: virtual address for SGE
1186  *
1187  * Create a zero length scatter gather entry to insure the IOCs hardware has
1188  * something to use if the target device goes brain dead and tries
1189  * to send data even when none is asked for.
1190  *
1191  * Return nothing.
1192  */
1193 static void
1194 _base_build_zero_len_sge(struct MPT3SAS_ADAPTER *ioc, void *paddr)
1195 {
1196         u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT |
1197             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST |
1198             MPI2_SGE_FLAGS_SIMPLE_ELEMENT) <<
1199             MPI2_SGE_FLAGS_SHIFT);
1200         ioc->base_add_sg_single(paddr, flags_length, -1);
1201 }
1202
1203 /**
1204  * _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr.
1205  * @paddr: virtual address for SGE
1206  * @flags_length: SGE flags and data transfer length
1207  * @dma_addr: Physical address
1208  *
1209  * Return nothing.
1210  */
1211 static void
1212 _base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1213 {
1214         Mpi2SGESimple32_t *sgel = paddr;
1215
1216         flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING |
1217             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1218         sgel->FlagsLength = cpu_to_le32(flags_length);
1219         sgel->Address = cpu_to_le32(dma_addr);
1220 }
1221
1222
1223 /**
1224  * _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr.
1225  * @paddr: virtual address for SGE
1226  * @flags_length: SGE flags and data transfer length
1227  * @dma_addr: Physical address
1228  *
1229  * Return nothing.
1230  */
1231 static void
1232 _base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1233 {
1234         Mpi2SGESimple64_t *sgel = paddr;
1235
1236         flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
1237             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1238         sgel->FlagsLength = cpu_to_le32(flags_length);
1239         sgel->Address = cpu_to_le64(dma_addr);
1240 }
1241
1242 /**
1243  * _base_get_chain_buffer_tracker - obtain chain tracker
1244  * @ioc: per adapter object
1245  * @smid: smid associated to an IO request
1246  *
1247  * Returns chain tracker(from ioc->free_chain_list)
1248  */
1249 static struct chain_tracker *
1250 _base_get_chain_buffer_tracker(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1251 {
1252         struct chain_tracker *chain_req;
1253         unsigned long flags;
1254
1255         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1256         if (list_empty(&ioc->free_chain_list)) {
1257                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1258                 dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1259                         "chain buffers not available\n", ioc->name));
1260                 return NULL;
1261         }
1262         chain_req = list_entry(ioc->free_chain_list.next,
1263             struct chain_tracker, tracker_list);
1264         list_del_init(&chain_req->tracker_list);
1265         list_add_tail(&chain_req->tracker_list,
1266             &ioc->scsi_lookup[smid - 1].chain_list);
1267         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1268         return chain_req;
1269 }
1270
1271
1272 /**
1273  * _base_build_sg - build generic sg
1274  * @ioc: per adapter object
1275  * @psge: virtual address for SGE
1276  * @data_out_dma: physical address for WRITES
1277  * @data_out_sz: data xfer size for WRITES
1278  * @data_in_dma: physical address for READS
1279  * @data_in_sz: data xfer size for READS
1280  *
1281  * Return nothing.
1282  */
1283 static void
1284 _base_build_sg(struct MPT3SAS_ADAPTER *ioc, void *psge,
1285         dma_addr_t data_out_dma, size_t data_out_sz, dma_addr_t data_in_dma,
1286         size_t data_in_sz)
1287 {
1288         u32 sgl_flags;
1289
1290         if (!data_out_sz && !data_in_sz) {
1291                 _base_build_zero_len_sge(ioc, psge);
1292                 return;
1293         }
1294
1295         if (data_out_sz && data_in_sz) {
1296                 /* WRITE sgel first */
1297                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1298                     MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1299                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1300                 ioc->base_add_sg_single(psge, sgl_flags |
1301                     data_out_sz, data_out_dma);
1302
1303                 /* incr sgel */
1304                 psge += ioc->sge_size;
1305
1306                 /* READ sgel last */
1307                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1308                     MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1309                     MPI2_SGE_FLAGS_END_OF_LIST);
1310                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1311                 ioc->base_add_sg_single(psge, sgl_flags |
1312                     data_in_sz, data_in_dma);
1313         } else if (data_out_sz) /* WRITE */ {
1314                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1315                     MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1316                     MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC);
1317                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1318                 ioc->base_add_sg_single(psge, sgl_flags |
1319                     data_out_sz, data_out_dma);
1320         } else if (data_in_sz) /* READ */ {
1321                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1322                     MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1323                     MPI2_SGE_FLAGS_END_OF_LIST);
1324                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1325                 ioc->base_add_sg_single(psge, sgl_flags |
1326                     data_in_sz, data_in_dma);
1327         }
1328 }
1329
1330 /* IEEE format sgls */
1331
1332 /**
1333  * _base_add_sg_single_ieee - add sg element for IEEE format
1334  * @paddr: virtual address for SGE
1335  * @flags: SGE flags
1336  * @chain_offset: number of 128 byte elements from start of segment
1337  * @length: data transfer length
1338  * @dma_addr: Physical address
1339  *
1340  * Return nothing.
1341  */
1342 static void
1343 _base_add_sg_single_ieee(void *paddr, u8 flags, u8 chain_offset, u32 length,
1344         dma_addr_t dma_addr)
1345 {
1346         Mpi25IeeeSgeChain64_t *sgel = paddr;
1347
1348         sgel->Flags = flags;
1349         sgel->NextChainOffset = chain_offset;
1350         sgel->Length = cpu_to_le32(length);
1351         sgel->Address = cpu_to_le64(dma_addr);
1352 }
1353
1354 /**
1355  * _base_build_zero_len_sge_ieee - build zero length sg entry for IEEE format
1356  * @ioc: per adapter object
1357  * @paddr: virtual address for SGE
1358  *
1359  * Create a zero length scatter gather entry to insure the IOCs hardware has
1360  * something to use if the target device goes brain dead and tries
1361  * to send data even when none is asked for.
1362  *
1363  * Return nothing.
1364  */
1365 static void
1366 _base_build_zero_len_sge_ieee(struct MPT3SAS_ADAPTER *ioc, void *paddr)
1367 {
1368         u8 sgl_flags = (MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT |
1369                 MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR |
1370                 MPI25_IEEE_SGE_FLAGS_END_OF_LIST);
1371
1372         _base_add_sg_single_ieee(paddr, sgl_flags, 0, 0, -1);
1373 }
1374
1375 /**
1376  * _base_build_sg_scmd - main sg creation routine
1377  * @ioc: per adapter object
1378  * @scmd: scsi command
1379  * @smid: system request message index
1380  * Context: none.
1381  *
1382  * The main routine that builds scatter gather table from a given
1383  * scsi request sent via the .queuecommand main handler.
1384  *
1385  * Returns 0 success, anything else error
1386  */
1387 static int
1388 _base_build_sg_scmd(struct MPT3SAS_ADAPTER *ioc,
1389                 struct scsi_cmnd *scmd, u16 smid)
1390 {
1391         Mpi2SCSIIORequest_t *mpi_request;
1392         dma_addr_t chain_dma;
1393         struct scatterlist *sg_scmd;
1394         void *sg_local, *chain;
1395         u32 chain_offset;
1396         u32 chain_length;
1397         u32 chain_flags;
1398         int sges_left;
1399         u32 sges_in_segment;
1400         u32 sgl_flags;
1401         u32 sgl_flags_last_element;
1402         u32 sgl_flags_end_buffer;
1403         struct chain_tracker *chain_req;
1404
1405         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1406
1407         /* init scatter gather flags */
1408         sgl_flags = MPI2_SGE_FLAGS_SIMPLE_ELEMENT;
1409         if (scmd->sc_data_direction == DMA_TO_DEVICE)
1410                 sgl_flags |= MPI2_SGE_FLAGS_HOST_TO_IOC;
1411         sgl_flags_last_element = (sgl_flags | MPI2_SGE_FLAGS_LAST_ELEMENT)
1412             << MPI2_SGE_FLAGS_SHIFT;
1413         sgl_flags_end_buffer = (sgl_flags | MPI2_SGE_FLAGS_LAST_ELEMENT |
1414             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST)
1415             << MPI2_SGE_FLAGS_SHIFT;
1416         sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1417
1418         sg_scmd = scsi_sglist(scmd);
1419         sges_left = scsi_dma_map(scmd);
1420         if (sges_left < 0) {
1421                 sdev_printk(KERN_ERR, scmd->device,
1422                  "pci_map_sg failed: request for %d bytes!\n",
1423                  scsi_bufflen(scmd));
1424                 return -ENOMEM;
1425         }
1426
1427         sg_local = &mpi_request->SGL;
1428         sges_in_segment = ioc->max_sges_in_main_message;
1429         if (sges_left <= sges_in_segment)
1430                 goto fill_in_last_segment;
1431
1432         mpi_request->ChainOffset = (offsetof(Mpi2SCSIIORequest_t, SGL) +
1433             (sges_in_segment * ioc->sge_size))/4;
1434
1435         /* fill in main message segment when there is a chain following */
1436         while (sges_in_segment) {
1437                 if (sges_in_segment == 1)
1438                         ioc->base_add_sg_single(sg_local,
1439                             sgl_flags_last_element | sg_dma_len(sg_scmd),
1440                             sg_dma_address(sg_scmd));
1441                 else
1442                         ioc->base_add_sg_single(sg_local, sgl_flags |
1443                             sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
1444                 sg_scmd = sg_next(sg_scmd);
1445                 sg_local += ioc->sge_size;
1446                 sges_left--;
1447                 sges_in_segment--;
1448         }
1449
1450         /* initializing the chain flags and pointers */
1451         chain_flags = MPI2_SGE_FLAGS_CHAIN_ELEMENT << MPI2_SGE_FLAGS_SHIFT;
1452         chain_req = _base_get_chain_buffer_tracker(ioc, smid);
1453         if (!chain_req)
1454                 return -1;
1455         chain = chain_req->chain_buffer;
1456         chain_dma = chain_req->chain_buffer_dma;
1457         do {
1458                 sges_in_segment = (sges_left <=
1459                     ioc->max_sges_in_chain_message) ? sges_left :
1460                     ioc->max_sges_in_chain_message;
1461                 chain_offset = (sges_left == sges_in_segment) ?
1462                     0 : (sges_in_segment * ioc->sge_size)/4;
1463                 chain_length = sges_in_segment * ioc->sge_size;
1464                 if (chain_offset) {
1465                         chain_offset = chain_offset <<
1466                             MPI2_SGE_CHAIN_OFFSET_SHIFT;
1467                         chain_length += ioc->sge_size;
1468                 }
1469                 ioc->base_add_sg_single(sg_local, chain_flags | chain_offset |
1470                     chain_length, chain_dma);
1471                 sg_local = chain;
1472                 if (!chain_offset)
1473                         goto fill_in_last_segment;
1474
1475                 /* fill in chain segments */
1476                 while (sges_in_segment) {
1477                         if (sges_in_segment == 1)
1478                                 ioc->base_add_sg_single(sg_local,
1479                                     sgl_flags_last_element |
1480                                     sg_dma_len(sg_scmd),
1481                                     sg_dma_address(sg_scmd));
1482                         else
1483                                 ioc->base_add_sg_single(sg_local, sgl_flags |
1484                                     sg_dma_len(sg_scmd),
1485                                     sg_dma_address(sg_scmd));
1486                         sg_scmd = sg_next(sg_scmd);
1487                         sg_local += ioc->sge_size;
1488                         sges_left--;
1489                         sges_in_segment--;
1490                 }
1491
1492                 chain_req = _base_get_chain_buffer_tracker(ioc, smid);
1493                 if (!chain_req)
1494                         return -1;
1495                 chain = chain_req->chain_buffer;
1496                 chain_dma = chain_req->chain_buffer_dma;
1497         } while (1);
1498
1499
1500  fill_in_last_segment:
1501
1502         /* fill the last segment */
1503         while (sges_left) {
1504                 if (sges_left == 1)
1505                         ioc->base_add_sg_single(sg_local, sgl_flags_end_buffer |
1506                             sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
1507                 else
1508                         ioc->base_add_sg_single(sg_local, sgl_flags |
1509                             sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
1510                 sg_scmd = sg_next(sg_scmd);
1511                 sg_local += ioc->sge_size;
1512                 sges_left--;
1513         }
1514
1515         return 0;
1516 }
1517
1518 /**
1519  * _base_build_sg_scmd_ieee - main sg creation routine for IEEE format
1520  * @ioc: per adapter object
1521  * @scmd: scsi command
1522  * @smid: system request message index
1523  * Context: none.
1524  *
1525  * The main routine that builds scatter gather table from a given
1526  * scsi request sent via the .queuecommand main handler.
1527  *
1528  * Returns 0 success, anything else error
1529  */
1530 static int
1531 _base_build_sg_scmd_ieee(struct MPT3SAS_ADAPTER *ioc,
1532         struct scsi_cmnd *scmd, u16 smid)
1533 {
1534         Mpi2SCSIIORequest_t *mpi_request;
1535         dma_addr_t chain_dma;
1536         struct scatterlist *sg_scmd;
1537         void *sg_local, *chain;
1538         u32 chain_offset;
1539         u32 chain_length;
1540         int sges_left;
1541         u32 sges_in_segment;
1542         u8 simple_sgl_flags;
1543         u8 simple_sgl_flags_last;
1544         u8 chain_sgl_flags;
1545         struct chain_tracker *chain_req;
1546
1547         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1548
1549         /* init scatter gather flags */
1550         simple_sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT |
1551             MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR;
1552         simple_sgl_flags_last = simple_sgl_flags |
1553             MPI25_IEEE_SGE_FLAGS_END_OF_LIST;
1554         chain_sgl_flags = MPI2_IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1555             MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR;
1556
1557         sg_scmd = scsi_sglist(scmd);
1558         sges_left = scsi_dma_map(scmd);
1559         if (sges_left < 0) {
1560                 sdev_printk(KERN_ERR, scmd->device,
1561                         "pci_map_sg failed: request for %d bytes!\n",
1562                         scsi_bufflen(scmd));
1563                 return -ENOMEM;
1564         }
1565
1566         sg_local = &mpi_request->SGL;
1567         sges_in_segment = (ioc->request_sz -
1568             offsetof(Mpi2SCSIIORequest_t, SGL))/ioc->sge_size_ieee;
1569         if (sges_left <= sges_in_segment)
1570                 goto fill_in_last_segment;
1571
1572         mpi_request->ChainOffset = (sges_in_segment - 1 /* chain element */) +
1573             (offsetof(Mpi2SCSIIORequest_t, SGL)/ioc->sge_size_ieee);
1574
1575         /* fill in main message segment when there is a chain following */
1576         while (sges_in_segment > 1) {
1577                 _base_add_sg_single_ieee(sg_local, simple_sgl_flags, 0,
1578                     sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
1579                 sg_scmd = sg_next(sg_scmd);
1580                 sg_local += ioc->sge_size_ieee;
1581                 sges_left--;
1582                 sges_in_segment--;
1583         }
1584
1585         /* initializing the pointers */
1586         chain_req = _base_get_chain_buffer_tracker(ioc, smid);
1587         if (!chain_req)
1588                 return -1;
1589         chain = chain_req->chain_buffer;
1590         chain_dma = chain_req->chain_buffer_dma;
1591         do {
1592                 sges_in_segment = (sges_left <=
1593                     ioc->max_sges_in_chain_message) ? sges_left :
1594                     ioc->max_sges_in_chain_message;
1595                 chain_offset = (sges_left == sges_in_segment) ?
1596                     0 : sges_in_segment;
1597                 chain_length = sges_in_segment * ioc->sge_size_ieee;
1598                 if (chain_offset)
1599                         chain_length += ioc->sge_size_ieee;
1600                 _base_add_sg_single_ieee(sg_local, chain_sgl_flags,
1601                     chain_offset, chain_length, chain_dma);
1602
1603                 sg_local = chain;
1604                 if (!chain_offset)
1605                         goto fill_in_last_segment;
1606
1607                 /* fill in chain segments */
1608                 while (sges_in_segment) {
1609                         _base_add_sg_single_ieee(sg_local, simple_sgl_flags, 0,
1610                             sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
1611                         sg_scmd = sg_next(sg_scmd);
1612                         sg_local += ioc->sge_size_ieee;
1613                         sges_left--;
1614                         sges_in_segment--;
1615                 }
1616
1617                 chain_req = _base_get_chain_buffer_tracker(ioc, smid);
1618                 if (!chain_req)
1619                         return -1;
1620                 chain = chain_req->chain_buffer;
1621                 chain_dma = chain_req->chain_buffer_dma;
1622         } while (1);
1623
1624
1625  fill_in_last_segment:
1626
1627         /* fill the last segment */
1628         while (sges_left > 0) {
1629                 if (sges_left == 1)
1630                         _base_add_sg_single_ieee(sg_local,
1631                             simple_sgl_flags_last, 0, sg_dma_len(sg_scmd),
1632                             sg_dma_address(sg_scmd));
1633                 else
1634                         _base_add_sg_single_ieee(sg_local, simple_sgl_flags, 0,
1635                             sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
1636                 sg_scmd = sg_next(sg_scmd);
1637                 sg_local += ioc->sge_size_ieee;
1638                 sges_left--;
1639         }
1640
1641         return 0;
1642 }
1643
1644 /**
1645  * _base_build_sg_ieee - build generic sg for IEEE format
1646  * @ioc: per adapter object
1647  * @psge: virtual address for SGE
1648  * @data_out_dma: physical address for WRITES
1649  * @data_out_sz: data xfer size for WRITES
1650  * @data_in_dma: physical address for READS
1651  * @data_in_sz: data xfer size for READS
1652  *
1653  * Return nothing.
1654  */
1655 static void
1656 _base_build_sg_ieee(struct MPT3SAS_ADAPTER *ioc, void *psge,
1657         dma_addr_t data_out_dma, size_t data_out_sz, dma_addr_t data_in_dma,
1658         size_t data_in_sz)
1659 {
1660         u8 sgl_flags;
1661
1662         if (!data_out_sz && !data_in_sz) {
1663                 _base_build_zero_len_sge_ieee(ioc, psge);
1664                 return;
1665         }
1666
1667         if (data_out_sz && data_in_sz) {
1668                 /* WRITE sgel first */
1669                 sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT |
1670                     MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR;
1671                 _base_add_sg_single_ieee(psge, sgl_flags, 0, data_out_sz,
1672                     data_out_dma);
1673
1674                 /* incr sgel */
1675                 psge += ioc->sge_size_ieee;
1676
1677                 /* READ sgel last */
1678                 sgl_flags |= MPI25_IEEE_SGE_FLAGS_END_OF_LIST;
1679                 _base_add_sg_single_ieee(psge, sgl_flags, 0, data_in_sz,
1680                     data_in_dma);
1681         } else if (data_out_sz) /* WRITE */ {
1682                 sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT |
1683                     MPI25_IEEE_SGE_FLAGS_END_OF_LIST |
1684                     MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR;
1685                 _base_add_sg_single_ieee(psge, sgl_flags, 0, data_out_sz,
1686                     data_out_dma);
1687         } else if (data_in_sz) /* READ */ {
1688                 sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT |
1689                     MPI25_IEEE_SGE_FLAGS_END_OF_LIST |
1690                     MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR;
1691                 _base_add_sg_single_ieee(psge, sgl_flags, 0, data_in_sz,
1692                     data_in_dma);
1693         }
1694 }
1695
1696 #define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10))
1697
1698 /**
1699  * _base_config_dma_addressing - set dma addressing
1700  * @ioc: per adapter object
1701  * @pdev: PCI device struct
1702  *
1703  * Returns 0 for success, non-zero for failure.
1704  */
1705 static int
1706 _base_config_dma_addressing(struct MPT3SAS_ADAPTER *ioc, struct pci_dev *pdev)
1707 {
1708         struct sysinfo s;
1709         u64 consistent_dma_mask;
1710
1711         if (ioc->dma_mask)
1712                 consistent_dma_mask = DMA_BIT_MASK(64);
1713         else
1714                 consistent_dma_mask = DMA_BIT_MASK(32);
1715
1716         if (sizeof(dma_addr_t) > 4) {
1717                 const uint64_t required_mask =
1718                     dma_get_required_mask(&pdev->dev);
1719                 if ((required_mask > DMA_BIT_MASK(32)) &&
1720                     !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
1721                     !pci_set_consistent_dma_mask(pdev, consistent_dma_mask)) {
1722                         ioc->base_add_sg_single = &_base_add_sg_single_64;
1723                         ioc->sge_size = sizeof(Mpi2SGESimple64_t);
1724                         ioc->dma_mask = 64;
1725                         goto out;
1726                 }
1727         }
1728
1729         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
1730             && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1731                 ioc->base_add_sg_single = &_base_add_sg_single_32;
1732                 ioc->sge_size = sizeof(Mpi2SGESimple32_t);
1733                 ioc->dma_mask = 32;
1734         } else
1735                 return -ENODEV;
1736
1737  out:
1738         si_meminfo(&s);
1739         pr_info(MPT3SAS_FMT
1740                 "%d BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (%ld kB)\n",
1741                 ioc->name, ioc->dma_mask, convert_to_kb(s.totalram));
1742
1743         return 0;
1744 }
1745
1746 static int
1747 _base_change_consistent_dma_mask(struct MPT3SAS_ADAPTER *ioc,
1748                                       struct pci_dev *pdev)
1749 {
1750         if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
1751                 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
1752                         return -ENODEV;
1753         }
1754         return 0;
1755 }
1756
1757 /**
1758  * _base_check_enable_msix - checks MSIX capabable.
1759  * @ioc: per adapter object
1760  *
1761  * Check to see if card is capable of MSIX, and set number
1762  * of available msix vectors
1763  */
1764 static int
1765 _base_check_enable_msix(struct MPT3SAS_ADAPTER *ioc)
1766 {
1767         int base;
1768         u16 message_control;
1769
1770         /* Check whether controller SAS2008 B0 controller,
1771          * if it is SAS2008 B0 controller use IO-APIC instead of MSIX
1772          */
1773         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 &&
1774             ioc->pdev->revision == SAS2_PCI_DEVICE_B0_REVISION) {
1775                 return -EINVAL;
1776         }
1777
1778         base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
1779         if (!base) {
1780                 dfailprintk(ioc, pr_info(MPT3SAS_FMT "msix not supported\n",
1781                         ioc->name));
1782                 return -EINVAL;
1783         }
1784
1785         /* get msix vector count */
1786         /* NUMA_IO not supported for older controllers */
1787         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2004 ||
1788             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 ||
1789             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_1 ||
1790             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_2 ||
1791             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_3 ||
1792             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_1 ||
1793             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_2)
1794                 ioc->msix_vector_count = 1;
1795         else {
1796                 pci_read_config_word(ioc->pdev, base + 2, &message_control);
1797                 ioc->msix_vector_count = (message_control & 0x3FF) + 1;
1798         }
1799         dinitprintk(ioc, pr_info(MPT3SAS_FMT
1800                 "msix is supported, vector_count(%d)\n",
1801                 ioc->name, ioc->msix_vector_count));
1802         return 0;
1803 }
1804
1805 /**
1806  * _base_free_irq - free irq
1807  * @ioc: per adapter object
1808  *
1809  * Freeing respective reply_queue from the list.
1810  */
1811 static void
1812 _base_free_irq(struct MPT3SAS_ADAPTER *ioc)
1813 {
1814         struct adapter_reply_queue *reply_q, *next;
1815
1816         if (list_empty(&ioc->reply_queue_list))
1817                 return;
1818
1819         list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) {
1820                 list_del(&reply_q->list);
1821                 if (smp_affinity_enable) {
1822                         irq_set_affinity_hint(reply_q->vector, NULL);
1823                         free_cpumask_var(reply_q->affinity_hint);
1824                 }
1825                 free_irq(reply_q->vector, reply_q);
1826                 kfree(reply_q);
1827         }
1828 }
1829
1830 /**
1831  * _base_request_irq - request irq
1832  * @ioc: per adapter object
1833  * @index: msix index into vector table
1834  * @vector: irq vector
1835  *
1836  * Inserting respective reply_queue into the list.
1837  */
1838 static int
1839 _base_request_irq(struct MPT3SAS_ADAPTER *ioc, u8 index, u32 vector)
1840 {
1841         struct adapter_reply_queue *reply_q;
1842         int r;
1843
1844         reply_q =  kzalloc(sizeof(struct adapter_reply_queue), GFP_KERNEL);
1845         if (!reply_q) {
1846                 pr_err(MPT3SAS_FMT "unable to allocate memory %d!\n",
1847                     ioc->name, (int)sizeof(struct adapter_reply_queue));
1848                 return -ENOMEM;
1849         }
1850         reply_q->ioc = ioc;
1851         reply_q->msix_index = index;
1852         reply_q->vector = vector;
1853
1854         if (smp_affinity_enable) {
1855                 if (!zalloc_cpumask_var(&reply_q->affinity_hint, GFP_KERNEL)) {
1856                         kfree(reply_q);
1857                         return -ENOMEM;
1858                 }
1859         }
1860
1861         atomic_set(&reply_q->busy, 0);
1862         if (ioc->msix_enable)
1863                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d-msix%d",
1864                     ioc->driver_name, ioc->id, index);
1865         else
1866                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d",
1867                     ioc->driver_name, ioc->id);
1868         r = request_irq(vector, _base_interrupt, IRQF_SHARED, reply_q->name,
1869             reply_q);
1870         if (r) {
1871                 pr_err(MPT3SAS_FMT "unable to allocate interrupt %d!\n",
1872                     reply_q->name, vector);
1873                 free_cpumask_var(reply_q->affinity_hint);
1874                 kfree(reply_q);
1875                 return -EBUSY;
1876         }
1877
1878         INIT_LIST_HEAD(&reply_q->list);
1879         list_add_tail(&reply_q->list, &ioc->reply_queue_list);
1880         return 0;
1881 }
1882
1883 /**
1884  * _base_assign_reply_queues - assigning msix index for each cpu
1885  * @ioc: per adapter object
1886  *
1887  * The enduser would need to set the affinity via /proc/irq/#/smp_affinity
1888  *
1889  * It would nice if we could call irq_set_affinity, however it is not
1890  * an exported symbol
1891  */
1892 static void
1893 _base_assign_reply_queues(struct MPT3SAS_ADAPTER *ioc)
1894 {
1895         unsigned int cpu, nr_cpus, nr_msix, index = 0;
1896         struct adapter_reply_queue *reply_q;
1897
1898         if (!_base_is_controller_msix_enabled(ioc))
1899                 return;
1900
1901         memset(ioc->cpu_msix_table, 0, ioc->cpu_msix_table_sz);
1902
1903         nr_cpus = num_online_cpus();
1904         nr_msix = ioc->reply_queue_count = min(ioc->reply_queue_count,
1905                                                ioc->facts.MaxMSIxVectors);
1906         if (!nr_msix)
1907                 return;
1908
1909         cpu = cpumask_first(cpu_online_mask);
1910
1911         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
1912
1913                 unsigned int i, group = nr_cpus / nr_msix;
1914
1915                 if (cpu >= nr_cpus)
1916                         break;
1917
1918                 if (index < nr_cpus % nr_msix)
1919                         group++;
1920
1921                 for (i = 0 ; i < group ; i++) {
1922                         ioc->cpu_msix_table[cpu] = index;
1923                         if (smp_affinity_enable)
1924                                 cpumask_or(reply_q->affinity_hint,
1925                                    reply_q->affinity_hint, get_cpu_mask(cpu));
1926                         cpu = cpumask_next(cpu, cpu_online_mask);
1927                 }
1928                 if (smp_affinity_enable)
1929                         if (irq_set_affinity_hint(reply_q->vector,
1930                                            reply_q->affinity_hint))
1931                                 dinitprintk(ioc, pr_info(MPT3SAS_FMT
1932                                  "Err setting affinity hint to irq vector %d\n",
1933                                  ioc->name, reply_q->vector));
1934                 index++;
1935         }
1936 }
1937
1938 /**
1939  * _base_disable_msix - disables msix
1940  * @ioc: per adapter object
1941  *
1942  */
1943 static void
1944 _base_disable_msix(struct MPT3SAS_ADAPTER *ioc)
1945 {
1946         if (!ioc->msix_enable)
1947                 return;
1948         pci_disable_msix(ioc->pdev);
1949         ioc->msix_enable = 0;
1950 }
1951
1952 /**
1953  * _base_enable_msix - enables msix, failback to io_apic
1954  * @ioc: per adapter object
1955  *
1956  */
1957 static int
1958 _base_enable_msix(struct MPT3SAS_ADAPTER *ioc)
1959 {
1960         struct msix_entry *entries, *a;
1961         int r;
1962         int i;
1963         u8 try_msix = 0;
1964
1965         if (msix_disable == -1 || msix_disable == 0)
1966                 try_msix = 1;
1967
1968         if (!try_msix)
1969                 goto try_ioapic;
1970
1971         if (_base_check_enable_msix(ioc) != 0)
1972                 goto try_ioapic;
1973
1974         ioc->reply_queue_count = min_t(int, ioc->cpu_count,
1975             ioc->msix_vector_count);
1976
1977         printk(MPT3SAS_FMT "MSI-X vectors supported: %d, no of cores"
1978           ": %d, max_msix_vectors: %d\n", ioc->name, ioc->msix_vector_count,
1979           ioc->cpu_count, max_msix_vectors);
1980
1981         if (!ioc->rdpq_array_enable && max_msix_vectors == -1)
1982                 max_msix_vectors = 8;
1983
1984         if (max_msix_vectors > 0) {
1985                 ioc->reply_queue_count = min_t(int, max_msix_vectors,
1986                         ioc->reply_queue_count);
1987                 ioc->msix_vector_count = ioc->reply_queue_count;
1988         } else if (max_msix_vectors == 0)
1989                 goto try_ioapic;
1990
1991         if (ioc->msix_vector_count < ioc->cpu_count)
1992                 smp_affinity_enable = 0;
1993
1994         entries = kcalloc(ioc->reply_queue_count, sizeof(struct msix_entry),
1995             GFP_KERNEL);
1996         if (!entries) {
1997                 dfailprintk(ioc, pr_info(MPT3SAS_FMT
1998                         "kcalloc failed @ at %s:%d/%s() !!!\n",
1999                         ioc->name, __FILE__, __LINE__, __func__));
2000                 goto try_ioapic;
2001         }
2002
2003         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++)
2004                 a->entry = i;
2005
2006         r = pci_enable_msix_exact(ioc->pdev, entries, ioc->reply_queue_count);
2007         if (r) {
2008                 dfailprintk(ioc, pr_info(MPT3SAS_FMT
2009                         "pci_enable_msix_exact failed (r=%d) !!!\n",
2010                         ioc->name, r));
2011                 kfree(entries);
2012                 goto try_ioapic;
2013         }
2014
2015         ioc->msix_enable = 1;
2016         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++) {
2017                 r = _base_request_irq(ioc, i, a->vector);
2018                 if (r) {
2019                         _base_free_irq(ioc);
2020                         _base_disable_msix(ioc);
2021                         kfree(entries);
2022                         goto try_ioapic;
2023                 }
2024         }
2025
2026         kfree(entries);
2027         return 0;
2028
2029 /* failback to io_apic interrupt routing */
2030  try_ioapic:
2031
2032         ioc->reply_queue_count = 1;
2033         r = _base_request_irq(ioc, 0, ioc->pdev->irq);
2034
2035         return r;
2036 }
2037
2038 /**
2039  * mpt3sas_base_unmap_resources - free controller resources
2040  * @ioc: per adapter object
2041  */
2042 static void
2043 mpt3sas_base_unmap_resources(struct MPT3SAS_ADAPTER *ioc)
2044 {
2045         struct pci_dev *pdev = ioc->pdev;
2046
2047         dexitprintk(ioc, printk(MPT3SAS_FMT "%s\n",
2048                 ioc->name, __func__));
2049
2050         _base_free_irq(ioc);
2051         _base_disable_msix(ioc);
2052
2053         if (ioc->msix96_vector) {
2054                 kfree(ioc->replyPostRegisterIndex);
2055                 ioc->replyPostRegisterIndex = NULL;
2056         }
2057
2058         if (ioc->chip_phys) {
2059                 iounmap(ioc->chip);
2060                 ioc->chip_phys = 0;
2061         }
2062
2063         if (pci_is_enabled(pdev)) {
2064                 pci_release_selected_regions(ioc->pdev, ioc->bars);
2065                 pci_disable_pcie_error_reporting(pdev);
2066                 pci_disable_device(pdev);
2067         }
2068 }
2069
2070 /**
2071  * mpt3sas_base_map_resources - map in controller resources (io/irq/memap)
2072  * @ioc: per adapter object
2073  *
2074  * Returns 0 for success, non-zero for failure.
2075  */
2076 int
2077 mpt3sas_base_map_resources(struct MPT3SAS_ADAPTER *ioc)
2078 {
2079         struct pci_dev *pdev = ioc->pdev;
2080         u32 memap_sz;
2081         u32 pio_sz;
2082         int i, r = 0;
2083         u64 pio_chip = 0;
2084         u64 chip_phys = 0;
2085         struct adapter_reply_queue *reply_q;
2086
2087         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n",
2088             ioc->name, __func__));
2089
2090         ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM);
2091         if (pci_enable_device_mem(pdev)) {
2092                 pr_warn(MPT3SAS_FMT "pci_enable_device_mem: failed\n",
2093                         ioc->name);
2094                 ioc->bars = 0;
2095                 return -ENODEV;
2096         }
2097
2098
2099         if (pci_request_selected_regions(pdev, ioc->bars,
2100             ioc->driver_name)) {
2101                 pr_warn(MPT3SAS_FMT "pci_request_selected_regions: failed\n",
2102                         ioc->name);
2103                 ioc->bars = 0;
2104                 r = -ENODEV;
2105                 goto out_fail;
2106         }
2107
2108 /* AER (Advanced Error Reporting) hooks */
2109         pci_enable_pcie_error_reporting(pdev);
2110
2111         pci_set_master(pdev);
2112
2113
2114         if (_base_config_dma_addressing(ioc, pdev) != 0) {
2115                 pr_warn(MPT3SAS_FMT "no suitable DMA mask for %s\n",
2116                     ioc->name, pci_name(pdev));
2117                 r = -ENODEV;
2118                 goto out_fail;
2119         }
2120
2121         for (i = 0, memap_sz = 0, pio_sz = 0; (i < DEVICE_COUNT_RESOURCE) &&
2122              (!memap_sz || !pio_sz); i++) {
2123                 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
2124                         if (pio_sz)
2125                                 continue;
2126                         pio_chip = (u64)pci_resource_start(pdev, i);
2127                         pio_sz = pci_resource_len(pdev, i);
2128                 } else if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
2129                         if (memap_sz)
2130                                 continue;
2131                         ioc->chip_phys = pci_resource_start(pdev, i);
2132                         chip_phys = (u64)ioc->chip_phys;
2133                         memap_sz = pci_resource_len(pdev, i);
2134                         ioc->chip = ioremap(ioc->chip_phys, memap_sz);
2135                 }
2136         }
2137
2138         if (ioc->chip == NULL) {
2139                 pr_err(MPT3SAS_FMT "unable to map adapter memory! "
2140                         " or resource not found\n", ioc->name);
2141                 r = -EINVAL;
2142                 goto out_fail;
2143         }
2144
2145         _base_mask_interrupts(ioc);
2146
2147         r = _base_get_ioc_facts(ioc);
2148         if (r)
2149                 goto out_fail;
2150
2151         if (!ioc->rdpq_array_enable_assigned) {
2152                 ioc->rdpq_array_enable = ioc->rdpq_array_capable;
2153                 ioc->rdpq_array_enable_assigned = 1;
2154         }
2155
2156         r = _base_enable_msix(ioc);
2157         if (r)
2158                 goto out_fail;
2159
2160         /* Use the Combined reply queue feature only for SAS3 C0 & higher
2161          * revision HBAs and also only when reply queue count is greater than 8
2162          */
2163         if (ioc->msix96_vector && ioc->reply_queue_count > 8) {
2164                 /* Determine the Supplemental Reply Post Host Index Registers
2165                  * Addresse. Supplemental Reply Post Host Index Registers
2166                  * starts at offset MPI25_SUP_REPLY_POST_HOST_INDEX_OFFSET and
2167                  * each register is at offset bytes of
2168                  * MPT3_SUP_REPLY_POST_HOST_INDEX_REG_OFFSET from previous one.
2169                  */
2170                 ioc->replyPostRegisterIndex = kcalloc(
2171                      MPT3_SUP_REPLY_POST_HOST_INDEX_REG_COUNT,
2172                      sizeof(resource_size_t *), GFP_KERNEL);
2173                 if (!ioc->replyPostRegisterIndex) {
2174                         dfailprintk(ioc, printk(MPT3SAS_FMT
2175                         "allocation for reply Post Register Index failed!!!\n",
2176                                                                    ioc->name));
2177                         r = -ENOMEM;
2178                         goto out_fail;
2179                 }
2180
2181                 for (i = 0; i < MPT3_SUP_REPLY_POST_HOST_INDEX_REG_COUNT; i++) {
2182                         ioc->replyPostRegisterIndex[i] = (resource_size_t *)
2183                              ((u8 *)&ioc->chip->Doorbell +
2184                              MPI25_SUP_REPLY_POST_HOST_INDEX_OFFSET +
2185                              (i * MPT3_SUP_REPLY_POST_HOST_INDEX_REG_OFFSET));
2186                 }
2187         } else
2188                 ioc->msix96_vector = 0;
2189
2190         if (ioc->is_warpdrive) {
2191                 ioc->reply_post_host_index[0] = (resource_size_t __iomem *)
2192                     &ioc->chip->ReplyPostHostIndex;
2193
2194                 for (i = 1; i < ioc->cpu_msix_table_sz; i++)
2195                         ioc->reply_post_host_index[i] =
2196                         (resource_size_t __iomem *)
2197                         ((u8 __iomem *)&ioc->chip->Doorbell + (0x4000 + ((i - 1)
2198                         * 4)));
2199         }
2200
2201         list_for_each_entry(reply_q, &ioc->reply_queue_list, list)
2202                 pr_info(MPT3SAS_FMT "%s: IRQ %d\n",
2203                     reply_q->name,  ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
2204                     "IO-APIC enabled"), reply_q->vector);
2205
2206         pr_info(MPT3SAS_FMT "iomem(0x%016llx), mapped(0x%p), size(%d)\n",
2207             ioc->name, (unsigned long long)chip_phys, ioc->chip, memap_sz);
2208         pr_info(MPT3SAS_FMT "ioport(0x%016llx), size(%d)\n",
2209             ioc->name, (unsigned long long)pio_chip, pio_sz);
2210
2211         /* Save PCI configuration state for recovery from PCI AER/EEH errors */
2212         pci_save_state(pdev);
2213         return 0;
2214
2215  out_fail:
2216         mpt3sas_base_unmap_resources(ioc);
2217         return r;
2218 }
2219
2220 /**
2221  * mpt3sas_base_get_msg_frame - obtain request mf pointer
2222  * @ioc: per adapter object
2223  * @smid: system request message index(smid zero is invalid)
2224  *
2225  * Returns virt pointer to message frame.
2226  */
2227 void *
2228 mpt3sas_base_get_msg_frame(struct MPT3SAS_ADAPTER *ioc, u16 smid)
2229 {
2230         return (void *)(ioc->request + (smid * ioc->request_sz));
2231 }
2232
2233 /**
2234  * mpt3sas_base_get_sense_buffer - obtain a sense buffer virt addr
2235  * @ioc: per adapter object
2236  * @smid: system request message index
2237  *
2238  * Returns virt pointer to sense buffer.
2239  */
2240 void *
2241 mpt3sas_base_get_sense_buffer(struct MPT3SAS_ADAPTER *ioc, u16 smid)
2242 {
2243         return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
2244 }
2245
2246 /**
2247  * mpt3sas_base_get_sense_buffer_dma - obtain a sense buffer dma addr
2248  * @ioc: per adapter object
2249  * @smid: system request message index
2250  *
2251  * Returns phys pointer to the low 32bit address of the sense buffer.
2252  */
2253 __le32
2254 mpt3sas_base_get_sense_buffer_dma(struct MPT3SAS_ADAPTER *ioc, u16 smid)
2255 {
2256         return cpu_to_le32(ioc->sense_dma + ((smid - 1) *
2257             SCSI_SENSE_BUFFERSIZE));
2258 }
2259
2260 /**
2261  * mpt3sas_base_get_reply_virt_addr - obtain reply frames virt address
2262  * @ioc: per adapter object
2263  * @phys_addr: lower 32 physical addr of the reply
2264  *
2265  * Converts 32bit lower physical addr into a virt address.
2266  */
2267 void *
2268 mpt3sas_base_get_reply_virt_addr(struct MPT3SAS_ADAPTER *ioc, u32 phys_addr)
2269 {
2270         if (!phys_addr)
2271                 return NULL;
2272         return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
2273 }
2274
2275 static inline u8
2276 _base_get_msix_index(struct MPT3SAS_ADAPTER *ioc)
2277 {
2278         return ioc->cpu_msix_table[raw_smp_processor_id()];
2279 }
2280
2281 /**
2282  * mpt3sas_base_get_smid - obtain a free smid from internal queue
2283  * @ioc: per adapter object
2284  * @cb_idx: callback index
2285  *
2286  * Returns smid (zero is invalid)
2287  */
2288 u16
2289 mpt3sas_base_get_smid(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx)
2290 {
2291         unsigned long flags;
2292         struct request_tracker *request;
2293         u16 smid;
2294
2295         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2296         if (list_empty(&ioc->internal_free_list)) {
2297                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2298                 pr_err(MPT3SAS_FMT "%s: smid not available\n",
2299                     ioc->name, __func__);
2300                 return 0;
2301         }
2302
2303         request = list_entry(ioc->internal_free_list.next,
2304             struct request_tracker, tracker_list);
2305         request->cb_idx = cb_idx;
2306         smid = request->smid;
2307         list_del(&request->tracker_list);
2308         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2309         return smid;
2310 }
2311
2312 /**
2313  * mpt3sas_base_get_smid_scsiio - obtain a free smid from scsiio queue
2314  * @ioc: per adapter object
2315  * @cb_idx: callback index
2316  * @scmd: pointer to scsi command object
2317  *
2318  * Returns smid (zero is invalid)
2319  */
2320 u16
2321 mpt3sas_base_get_smid_scsiio(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx,
2322         struct scsi_cmnd *scmd)
2323 {
2324         unsigned long flags;
2325         struct scsiio_tracker *request;
2326         u16 smid;
2327
2328         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2329         if (list_empty(&ioc->free_list)) {
2330                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2331                 pr_err(MPT3SAS_FMT "%s: smid not available\n",
2332                     ioc->name, __func__);
2333                 return 0;
2334         }
2335
2336         request = list_entry(ioc->free_list.next,
2337             struct scsiio_tracker, tracker_list);
2338         request->scmd = scmd;
2339         request->cb_idx = cb_idx;
2340         smid = request->smid;
2341         request->msix_io = _base_get_msix_index(ioc);
2342         list_del(&request->tracker_list);
2343         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2344         return smid;
2345 }
2346
2347 /**
2348  * mpt3sas_base_get_smid_hpr - obtain a free smid from hi-priority queue
2349  * @ioc: per adapter object
2350  * @cb_idx: callback index
2351  *
2352  * Returns smid (zero is invalid)
2353  */
2354 u16
2355 mpt3sas_base_get_smid_hpr(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx)
2356 {
2357         unsigned long flags;
2358         struct request_tracker *request;
2359         u16 smid;
2360
2361         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2362         if (list_empty(&ioc->hpr_free_list)) {
2363                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2364                 return 0;
2365         }
2366
2367         request = list_entry(ioc->hpr_free_list.next,
2368             struct request_tracker, tracker_list);
2369         request->cb_idx = cb_idx;
2370         smid = request->smid;
2371         list_del(&request->tracker_list);
2372         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2373         return smid;
2374 }
2375
2376 /**
2377  * mpt3sas_base_free_smid - put smid back on free_list
2378  * @ioc: per adapter object
2379  * @smid: system request message index
2380  *
2381  * Return nothing.
2382  */
2383 void
2384 mpt3sas_base_free_smid(struct MPT3SAS_ADAPTER *ioc, u16 smid)
2385 {
2386         unsigned long flags;
2387         int i;
2388         struct chain_tracker *chain_req, *next;
2389
2390         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2391         if (smid < ioc->hi_priority_smid) {
2392                 /* scsiio queue */
2393                 i = smid - 1;
2394                 if (!list_empty(&ioc->scsi_lookup[i].chain_list)) {
2395                         list_for_each_entry_safe(chain_req, next,
2396                             &ioc->scsi_lookup[i].chain_list, tracker_list) {
2397                                 list_del_init(&chain_req->tracker_list);
2398                                 list_add(&chain_req->tracker_list,
2399                                     &ioc->free_chain_list);
2400                         }
2401                 }
2402                 ioc->scsi_lookup[i].cb_idx = 0xFF;
2403                 ioc->scsi_lookup[i].scmd = NULL;
2404                 ioc->scsi_lookup[i].direct_io = 0;
2405                 list_add(&ioc->scsi_lookup[i].tracker_list, &ioc->free_list);
2406                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2407
2408                 /*
2409                  * See _wait_for_commands_to_complete() call with regards
2410                  * to this code.
2411                  */
2412                 if (ioc->shost_recovery && ioc->pending_io_count) {
2413                         if (ioc->pending_io_count == 1)
2414                                 wake_up(&ioc->reset_wq);
2415                         ioc->pending_io_count--;
2416                 }
2417                 return;
2418         } else if (smid < ioc->internal_smid) {
2419                 /* hi-priority */
2420                 i = smid - ioc->hi_priority_smid;
2421                 ioc->hpr_lookup[i].cb_idx = 0xFF;
2422                 list_add(&ioc->hpr_lookup[i].tracker_list, &ioc->hpr_free_list);
2423         } else if (smid <= ioc->hba_queue_depth) {
2424                 /* internal queue */
2425                 i = smid - ioc->internal_smid;
2426                 ioc->internal_lookup[i].cb_idx = 0xFF;
2427                 list_add(&ioc->internal_lookup[i].tracker_list,
2428                     &ioc->internal_free_list);
2429         }
2430         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2431 }
2432
2433 /**
2434  * _base_writeq - 64 bit write to MMIO
2435  * @ioc: per adapter object
2436  * @b: data payload
2437  * @addr: address in MMIO space
2438  * @writeq_lock: spin lock
2439  *
2440  * Glue for handling an atomic 64 bit word to MMIO. This special handling takes
2441  * care of 32 bit environment where its not quarenteed to send the entire word
2442  * in one transfer.
2443  */
2444 #if defined(writeq) && defined(CONFIG_64BIT)
2445 static inline void
2446 _base_writeq(__u64 b, volatile void __iomem *addr, spinlock_t *writeq_lock)
2447 {
2448         writeq(cpu_to_le64(b), addr);
2449 }
2450 #else
2451 static inline void
2452 _base_writeq(__u64 b, volatile void __iomem *addr, spinlock_t *writeq_lock)
2453 {
2454         unsigned long flags;
2455         __u64 data_out = cpu_to_le64(b);
2456
2457         spin_lock_irqsave(writeq_lock, flags);
2458         writel((u32)(data_out), addr);
2459         writel((u32)(data_out >> 32), (addr + 4));
2460         spin_unlock_irqrestore(writeq_lock, flags);
2461 }
2462 #endif
2463
2464 /**
2465  * mpt3sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
2466  * @ioc: per adapter object
2467  * @smid: system request message index
2468  * @handle: device handle
2469  *
2470  * Return nothing.
2471  */
2472 void
2473 mpt3sas_base_put_smid_scsi_io(struct MPT3SAS_ADAPTER *ioc, u16 smid, u16 handle)
2474 {
2475         Mpi2RequestDescriptorUnion_t descriptor;
2476         u64 *request = (u64 *)&descriptor;
2477
2478
2479         descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
2480         descriptor.SCSIIO.MSIxIndex =  _base_get_msix_index(ioc);
2481         descriptor.SCSIIO.SMID = cpu_to_le16(smid);
2482         descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
2483         descriptor.SCSIIO.LMID = 0;
2484         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
2485             &ioc->scsi_lookup_lock);
2486 }
2487
2488 /**
2489  * mpt3sas_base_put_smid_fast_path - send fast path request to firmware
2490  * @ioc: per adapter object
2491  * @smid: system request message index
2492  * @handle: device handle
2493  *
2494  * Return nothing.
2495  */
2496 void
2497 mpt3sas_base_put_smid_fast_path(struct MPT3SAS_ADAPTER *ioc, u16 smid,
2498         u16 handle)
2499 {
2500         Mpi2RequestDescriptorUnion_t descriptor;
2501         u64 *request = (u64 *)&descriptor;
2502
2503         descriptor.SCSIIO.RequestFlags =
2504             MPI25_REQ_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO;
2505         descriptor.SCSIIO.MSIxIndex = _base_get_msix_index(ioc);
2506         descriptor.SCSIIO.SMID = cpu_to_le16(smid);
2507         descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
2508         descriptor.SCSIIO.LMID = 0;
2509         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
2510             &ioc->scsi_lookup_lock);
2511 }
2512
2513 /**
2514  * mpt3sas_base_put_smid_hi_priority - send Task Managment request to firmware
2515  * @ioc: per adapter object
2516  * @smid: system request message index
2517  * @msix_task: msix_task will be same as msix of IO incase of task abort else 0.
2518  * Return nothing.
2519  */
2520 void
2521 mpt3sas_base_put_smid_hi_priority(struct MPT3SAS_ADAPTER *ioc, u16 smid,
2522         u16 msix_task)
2523 {
2524         Mpi2RequestDescriptorUnion_t descriptor;
2525         u64 *request = (u64 *)&descriptor;
2526
2527         descriptor.HighPriority.RequestFlags =
2528             MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
2529         descriptor.HighPriority.MSIxIndex =  msix_task;
2530         descriptor.HighPriority.SMID = cpu_to_le16(smid);
2531         descriptor.HighPriority.LMID = 0;
2532         descriptor.HighPriority.Reserved1 = 0;
2533         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
2534             &ioc->scsi_lookup_lock);
2535 }
2536
2537 /**
2538  * mpt3sas_base_put_smid_default - Default, primarily used for config pages
2539  * @ioc: per adapter object
2540  * @smid: system request message index
2541  *
2542  * Return nothing.
2543  */
2544 void
2545 mpt3sas_base_put_smid_default(struct MPT3SAS_ADAPTER *ioc, u16 smid)
2546 {
2547         Mpi2RequestDescriptorUnion_t descriptor;
2548         u64 *request = (u64 *)&descriptor;
2549
2550         descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
2551         descriptor.Default.MSIxIndex =  _base_get_msix_index(ioc);
2552         descriptor.Default.SMID = cpu_to_le16(smid);
2553         descriptor.Default.LMID = 0;
2554         descriptor.Default.DescriptorTypeDependent = 0;
2555         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
2556             &ioc->scsi_lookup_lock);
2557 }
2558
2559 /**
2560  * _base_display_OEMs_branding - Display branding string
2561  * @ioc: per adapter object
2562  *
2563  * Return nothing.
2564  */
2565 static void
2566 _base_display_OEMs_branding(struct MPT3SAS_ADAPTER *ioc)
2567 {
2568         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
2569                 return;
2570
2571         switch (ioc->pdev->subsystem_vendor) {
2572         case PCI_VENDOR_ID_INTEL:
2573                 switch (ioc->pdev->device) {
2574                 case MPI2_MFGPAGE_DEVID_SAS2008:
2575                         switch (ioc->pdev->subsystem_device) {
2576                         case MPT2SAS_INTEL_RMS2LL080_SSDID:
2577                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2578                                     MPT2SAS_INTEL_RMS2LL080_BRANDING);
2579                                 break;
2580                         case MPT2SAS_INTEL_RMS2LL040_SSDID:
2581                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2582                                     MPT2SAS_INTEL_RMS2LL040_BRANDING);
2583                                 break;
2584                         case MPT2SAS_INTEL_SSD910_SSDID:
2585                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2586                                     MPT2SAS_INTEL_SSD910_BRANDING);
2587                                 break;
2588                         default:
2589                                 pr_info(MPT3SAS_FMT
2590                                  "Intel(R) Controller: Subsystem ID: 0x%X\n",
2591                                  ioc->name, ioc->pdev->subsystem_device);
2592                                 break;
2593                         }
2594                 case MPI2_MFGPAGE_DEVID_SAS2308_2:
2595                         switch (ioc->pdev->subsystem_device) {
2596                         case MPT2SAS_INTEL_RS25GB008_SSDID:
2597                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2598                                     MPT2SAS_INTEL_RS25GB008_BRANDING);
2599                                 break;
2600                         case MPT2SAS_INTEL_RMS25JB080_SSDID:
2601                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2602                                     MPT2SAS_INTEL_RMS25JB080_BRANDING);
2603                                 break;
2604                         case MPT2SAS_INTEL_RMS25JB040_SSDID:
2605                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2606                                     MPT2SAS_INTEL_RMS25JB040_BRANDING);
2607                                 break;
2608                         case MPT2SAS_INTEL_RMS25KB080_SSDID:
2609                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2610                                     MPT2SAS_INTEL_RMS25KB080_BRANDING);
2611                                 break;
2612                         case MPT2SAS_INTEL_RMS25KB040_SSDID:
2613                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2614                                     MPT2SAS_INTEL_RMS25KB040_BRANDING);
2615                                 break;
2616                         case MPT2SAS_INTEL_RMS25LB040_SSDID:
2617                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2618                                     MPT2SAS_INTEL_RMS25LB040_BRANDING);
2619                                 break;
2620                         case MPT2SAS_INTEL_RMS25LB080_SSDID:
2621                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2622                                     MPT2SAS_INTEL_RMS25LB080_BRANDING);
2623                                 break;
2624                         default:
2625                                 pr_info(MPT3SAS_FMT
2626                                  "Intel(R) Controller: Subsystem ID: 0x%X\n",
2627                                  ioc->name, ioc->pdev->subsystem_device);
2628                                 break;
2629                         }
2630                 case MPI25_MFGPAGE_DEVID_SAS3008:
2631                         switch (ioc->pdev->subsystem_device) {
2632                         case MPT3SAS_INTEL_RMS3JC080_SSDID:
2633                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2634                                         MPT3SAS_INTEL_RMS3JC080_BRANDING);
2635                                 break;
2636
2637                         case MPT3SAS_INTEL_RS3GC008_SSDID:
2638                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2639                                         MPT3SAS_INTEL_RS3GC008_BRANDING);
2640                                 break;
2641                         case MPT3SAS_INTEL_RS3FC044_SSDID:
2642                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2643                                         MPT3SAS_INTEL_RS3FC044_BRANDING);
2644                                 break;
2645                         case MPT3SAS_INTEL_RS3UC080_SSDID:
2646                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2647                                         MPT3SAS_INTEL_RS3UC080_BRANDING);
2648                                 break;
2649                         default:
2650                                 pr_info(MPT3SAS_FMT
2651                                  "Intel(R) Controller: Subsystem ID: 0x%X\n",
2652                                  ioc->name, ioc->pdev->subsystem_device);
2653                                 break;
2654                         }
2655                         break;
2656                 default:
2657                         pr_info(MPT3SAS_FMT
2658                          "Intel(R) Controller: Subsystem ID: 0x%X\n",
2659                          ioc->name, ioc->pdev->subsystem_device);
2660                         break;
2661                 }
2662                 break;
2663         case PCI_VENDOR_ID_DELL:
2664                 switch (ioc->pdev->device) {
2665                 case MPI2_MFGPAGE_DEVID_SAS2008:
2666                         switch (ioc->pdev->subsystem_device) {
2667                         case MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID:
2668                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2669                                  MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING);
2670                                 break;
2671                         case MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID:
2672                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2673                                  MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING);
2674                                 break;
2675                         case MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID:
2676                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2677                                  MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING);
2678                                 break;
2679                         case MPT2SAS_DELL_PERC_H200_MODULAR_SSDID:
2680                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2681                                  MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING);
2682                                 break;
2683                         case MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID:
2684                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2685                                  MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING);
2686                                 break;
2687                         case MPT2SAS_DELL_PERC_H200_SSDID:
2688                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2689                                  MPT2SAS_DELL_PERC_H200_BRANDING);
2690                                 break;
2691                         case MPT2SAS_DELL_6GBPS_SAS_SSDID:
2692                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2693                                  MPT2SAS_DELL_6GBPS_SAS_BRANDING);
2694                                 break;
2695                         default:
2696                                 pr_info(MPT3SAS_FMT
2697                                    "Dell 6Gbps HBA: Subsystem ID: 0x%X\n",
2698                                    ioc->name, ioc->pdev->subsystem_device);
2699                                 break;
2700                         }
2701                         break;
2702                 case MPI25_MFGPAGE_DEVID_SAS3008:
2703                         switch (ioc->pdev->subsystem_device) {
2704                         case MPT3SAS_DELL_12G_HBA_SSDID:
2705                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2706                                         MPT3SAS_DELL_12G_HBA_BRANDING);
2707                                 break;
2708                         default:
2709                                 pr_info(MPT3SAS_FMT
2710                                    "Dell 12Gbps HBA: Subsystem ID: 0x%X\n",
2711                                    ioc->name, ioc->pdev->subsystem_device);
2712                                 break;
2713                         }
2714                         break;
2715                 default:
2716                         pr_info(MPT3SAS_FMT
2717                            "Dell HBA: Subsystem ID: 0x%X\n", ioc->name,
2718                            ioc->pdev->subsystem_device);
2719                         break;
2720                 }
2721                 break;
2722         case PCI_VENDOR_ID_CISCO:
2723                 switch (ioc->pdev->device) {
2724                 case MPI25_MFGPAGE_DEVID_SAS3008:
2725                         switch (ioc->pdev->subsystem_device) {
2726                         case MPT3SAS_CISCO_12G_8E_HBA_SSDID:
2727                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2728                                         MPT3SAS_CISCO_12G_8E_HBA_BRANDING);
2729                                 break;
2730                         case MPT3SAS_CISCO_12G_8I_HBA_SSDID:
2731                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2732                                         MPT3SAS_CISCO_12G_8I_HBA_BRANDING);
2733                                 break;
2734                         case MPT3SAS_CISCO_12G_AVILA_HBA_SSDID:
2735                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2736                                         MPT3SAS_CISCO_12G_AVILA_HBA_BRANDING);
2737                                 break;
2738                         default:
2739                                 pr_info(MPT3SAS_FMT
2740                                   "Cisco 12Gbps SAS HBA: Subsystem ID: 0x%X\n",
2741                                   ioc->name, ioc->pdev->subsystem_device);
2742                                 break;
2743                         }
2744                         break;
2745                 case MPI25_MFGPAGE_DEVID_SAS3108_1:
2746                         switch (ioc->pdev->subsystem_device) {
2747                         case MPT3SAS_CISCO_12G_AVILA_HBA_SSDID:
2748                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2749                                 MPT3SAS_CISCO_12G_AVILA_HBA_BRANDING);
2750                                 break;
2751                         case MPT3SAS_CISCO_12G_COLUSA_MEZZANINE_HBA_SSDID:
2752                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2753                                 MPT3SAS_CISCO_12G_COLUSA_MEZZANINE_HBA_BRANDING
2754                                 );
2755                                 break;
2756                         default:
2757                                 pr_info(MPT3SAS_FMT
2758                                  "Cisco 12Gbps SAS HBA: Subsystem ID: 0x%X\n",
2759                                  ioc->name, ioc->pdev->subsystem_device);
2760                                 break;
2761                         }
2762                         break;
2763                 default:
2764                         pr_info(MPT3SAS_FMT
2765                            "Cisco SAS HBA: Subsystem ID: 0x%X\n",
2766                            ioc->name, ioc->pdev->subsystem_device);
2767                         break;
2768                 }
2769                 break;
2770         case MPT2SAS_HP_3PAR_SSVID:
2771                 switch (ioc->pdev->device) {
2772                 case MPI2_MFGPAGE_DEVID_SAS2004:
2773                         switch (ioc->pdev->subsystem_device) {
2774                         case MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_SSDID:
2775                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2776                                     MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_BRANDING);
2777                                 break;
2778                         default:
2779                                 pr_info(MPT3SAS_FMT
2780                                    "HP 6Gbps SAS HBA: Subsystem ID: 0x%X\n",
2781                                    ioc->name, ioc->pdev->subsystem_device);
2782                                 break;
2783                         }
2784                 case MPI2_MFGPAGE_DEVID_SAS2308_2:
2785                         switch (ioc->pdev->subsystem_device) {
2786                         case MPT2SAS_HP_2_4_INTERNAL_SSDID:
2787                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2788                                     MPT2SAS_HP_2_4_INTERNAL_BRANDING);
2789                                 break;
2790                         case MPT2SAS_HP_2_4_EXTERNAL_SSDID:
2791                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2792                                     MPT2SAS_HP_2_4_EXTERNAL_BRANDING);
2793                                 break;
2794                         case MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_SSDID:
2795                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2796                                  MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_BRANDING);
2797                                 break;
2798                         case MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_SSDID:
2799                                 pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2800                                     MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_BRANDING);
2801                                 break;
2802                         default:
2803                                 pr_info(MPT3SAS_FMT
2804                                    "HP 6Gbps SAS HBA: Subsystem ID: 0x%X\n",
2805                                    ioc->name, ioc->pdev->subsystem_device);
2806                                 break;
2807                         }
2808                 default:
2809                         pr_info(MPT3SAS_FMT
2810                            "HP SAS HBA: Subsystem ID: 0x%X\n",
2811                            ioc->name, ioc->pdev->subsystem_device);
2812                         break;
2813                 }
2814         default:
2815                 break;
2816         }
2817 }
2818
2819 /**
2820  * _base_display_ioc_capabilities - Disply IOC's capabilities.
2821  * @ioc: per adapter object
2822  *
2823  * Return nothing.
2824  */
2825 static void
2826 _base_display_ioc_capabilities(struct MPT3SAS_ADAPTER *ioc)
2827 {
2828         int i = 0;
2829         char desc[16];
2830         u32 iounit_pg1_flags;
2831         u32 bios_version;
2832
2833         bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2834         strncpy(desc, ioc->manu_pg0.ChipName, 16);
2835         pr_info(MPT3SAS_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "\
2836            "ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
2837             ioc->name, desc,
2838            (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2839            (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2840            (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2841            ioc->facts.FWVersion.Word & 0x000000FF,
2842            ioc->pdev->revision,
2843            (bios_version & 0xFF000000) >> 24,
2844            (bios_version & 0x00FF0000) >> 16,
2845            (bios_version & 0x0000FF00) >> 8,
2846             bios_version & 0x000000FF);
2847
2848         _base_display_OEMs_branding(ioc);
2849
2850         pr_info(MPT3SAS_FMT "Protocol=(", ioc->name);
2851
2852         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
2853                 pr_info("Initiator");
2854                 i++;
2855         }
2856
2857         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
2858                 pr_info("%sTarget", i ? "," : "");
2859                 i++;
2860         }
2861
2862         i = 0;
2863         pr_info("), ");
2864         pr_info("Capabilities=(");
2865
2866         if (!ioc->hide_ir_msg) {
2867                 if (ioc->facts.IOCCapabilities &
2868                     MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
2869                         pr_info("Raid");
2870                         i++;
2871                 }
2872         }
2873
2874         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
2875                 pr_info("%sTLR", i ? "," : "");
2876                 i++;
2877         }
2878
2879         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
2880                 pr_info("%sMulticast", i ? "," : "");
2881                 i++;
2882         }
2883
2884         if (ioc->facts.IOCCapabilities &
2885             MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
2886                 pr_info("%sBIDI Target", i ? "," : "");
2887                 i++;
2888         }
2889
2890         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
2891                 pr_info("%sEEDP", i ? "," : "");
2892                 i++;
2893         }
2894
2895         if (ioc->facts.IOCCapabilities &
2896             MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
2897                 pr_info("%sSnapshot Buffer", i ? "," : "");
2898                 i++;
2899         }
2900
2901         if (ioc->facts.IOCCapabilities &
2902             MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
2903                 pr_info("%sDiag Trace Buffer", i ? "," : "");
2904                 i++;
2905         }
2906
2907         if (ioc->facts.IOCCapabilities &
2908             MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) {
2909                 pr_info("%sDiag Extended Buffer", i ? "," : "");
2910                 i++;
2911         }
2912
2913         if (ioc->facts.IOCCapabilities &
2914             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
2915                 pr_info("%sTask Set Full", i ? "," : "");
2916                 i++;
2917         }
2918
2919         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2920         if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
2921                 pr_info("%sNCQ", i ? "," : "");
2922                 i++;
2923         }
2924
2925         pr_info(")\n");
2926 }
2927
2928 /**
2929  * mpt3sas_base_update_missing_delay - change the missing delay timers
2930  * @ioc: per adapter object
2931  * @device_missing_delay: amount of time till device is reported missing
2932  * @io_missing_delay: interval IO is returned when there is a missing device
2933  *
2934  * Return nothing.
2935  *
2936  * Passed on the command line, this function will modify the device missing
2937  * delay, as well as the io missing delay. This should be called at driver
2938  * load time.
2939  */
2940 void
2941 mpt3sas_base_update_missing_delay(struct MPT3SAS_ADAPTER *ioc,
2942         u16 device_missing_delay, u8 io_missing_delay)
2943 {
2944         u16 dmd, dmd_new, dmd_orignal;
2945         u8 io_missing_delay_original;
2946         u16 sz;
2947         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
2948         Mpi2ConfigReply_t mpi_reply;
2949         u8 num_phys = 0;
2950         u16 ioc_status;
2951
2952         mpt3sas_config_get_number_hba_phys(ioc, &num_phys);
2953         if (!num_phys)
2954                 return;
2955
2956         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (num_phys *
2957             sizeof(Mpi2SasIOUnit1PhyData_t));
2958         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
2959         if (!sas_iounit_pg1) {
2960                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
2961                     ioc->name, __FILE__, __LINE__, __func__);
2962                 goto out;
2963         }
2964         if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
2965             sas_iounit_pg1, sz))) {
2966                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
2967                     ioc->name, __FILE__, __LINE__, __func__);
2968                 goto out;
2969         }
2970         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
2971             MPI2_IOCSTATUS_MASK;
2972         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2973                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
2974                     ioc->name, __FILE__, __LINE__, __func__);
2975                 goto out;
2976         }
2977
2978         /* device missing delay */
2979         dmd = sas_iounit_pg1->ReportDeviceMissingDelay;
2980         if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2981                 dmd = (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2982         else
2983                 dmd = dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2984         dmd_orignal = dmd;
2985         if (device_missing_delay > 0x7F) {
2986                 dmd = (device_missing_delay > 0x7F0) ? 0x7F0 :
2987                     device_missing_delay;
2988                 dmd = dmd / 16;
2989                 dmd |= MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16;
2990         } else
2991                 dmd = device_missing_delay;
2992         sas_iounit_pg1->ReportDeviceMissingDelay = dmd;
2993
2994         /* io missing delay */
2995         io_missing_delay_original = sas_iounit_pg1->IODeviceMissingDelay;
2996         sas_iounit_pg1->IODeviceMissingDelay = io_missing_delay;
2997
2998         if (!mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
2999             sz)) {
3000                 if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
3001                         dmd_new = (dmd &
3002                             MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
3003                 else
3004                         dmd_new =
3005                     dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
3006                 pr_info(MPT3SAS_FMT "device_missing_delay: old(%d), new(%d)\n",
3007                         ioc->name, dmd_orignal, dmd_new);
3008                 pr_info(MPT3SAS_FMT "ioc_missing_delay: old(%d), new(%d)\n",
3009                         ioc->name, io_missing_delay_original,
3010                     io_missing_delay);
3011                 ioc->device_missing_delay = dmd_new;
3012                 ioc->io_missing_delay = io_missing_delay;
3013         }
3014
3015 out:
3016         kfree(sas_iounit_pg1);
3017 }
3018 /**
3019  * _base_static_config_pages - static start of day config pages
3020  * @ioc: per adapter object
3021  *
3022  * Return nothing.
3023  */
3024 static void
3025 _base_static_config_pages(struct MPT3SAS_ADAPTER *ioc)
3026 {
3027         Mpi2ConfigReply_t mpi_reply;
3028         u32 iounit_pg1_flags;
3029
3030         mpt3sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
3031         if (ioc->ir_firmware)
3032                 mpt3sas_config_get_manufacturing_pg10(ioc, &mpi_reply,
3033                     &ioc->manu_pg10);
3034
3035         /*
3036          * Ensure correct T10 PI operation if vendor left EEDPTagMode
3037          * flag unset in NVDATA.
3038          */
3039         mpt3sas_config_get_manufacturing_pg11(ioc, &mpi_reply, &ioc->manu_pg11);
3040         if (ioc->manu_pg11.EEDPTagMode == 0) {
3041                 pr_err("%s: overriding NVDATA EEDPTagMode setting\n",
3042                     ioc->name);
3043                 ioc->manu_pg11.EEDPTagMode &= ~0x3;
3044                 ioc->manu_pg11.EEDPTagMode |= 0x1;
3045                 mpt3sas_config_set_manufacturing_pg11(ioc, &mpi_reply,
3046                     &ioc->manu_pg11);
3047         }
3048
3049         mpt3sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
3050         mpt3sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
3051         mpt3sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
3052         mpt3sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
3053         mpt3sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
3054         mpt3sas_config_get_iounit_pg8(ioc, &mpi_reply, &ioc->iounit_pg8);
3055         _base_display_ioc_capabilities(ioc);
3056
3057         /*
3058          * Enable task_set_full handling in iounit_pg1 when the
3059          * facts capabilities indicate that its supported.
3060          */
3061         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
3062         if ((ioc->facts.IOCCapabilities &
3063             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
3064                 iounit_pg1_flags &=
3065                     ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
3066         else
3067                 iounit_pg1_flags |=
3068                     MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
3069         ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
3070         mpt3sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
3071
3072         if (ioc->iounit_pg8.NumSensors)
3073                 ioc->temp_sensors_count = ioc->iounit_pg8.NumSensors;
3074 }
3075
3076 /**
3077  * _base_release_memory_pools - release memory
3078  * @ioc: per adapter object
3079  *
3080  * Free memory allocated from _base_allocate_memory_pools.
3081  *
3082  * Return nothing.
3083  */
3084 static void
3085 _base_release_memory_pools(struct MPT3SAS_ADAPTER *ioc)
3086 {
3087         int i = 0;
3088         struct reply_post_struct *rps;
3089
3090         dexitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
3091             __func__));
3092
3093         if (ioc->request) {
3094                 pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
3095                     ioc->request,  ioc->request_dma);
3096                 dexitprintk(ioc, pr_info(MPT3SAS_FMT
3097                         "request_pool(0x%p): free\n",
3098                         ioc->name, ioc->request));
3099                 ioc->request = NULL;
3100         }
3101
3102         if (ioc->sense) {
3103                 pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
3104                 if (ioc->sense_dma_pool)
3105                         pci_pool_destroy(ioc->sense_dma_pool);
3106                 dexitprintk(ioc, pr_info(MPT3SAS_FMT
3107                         "sense_pool(0x%p): free\n",
3108                         ioc->name, ioc->sense));
3109                 ioc->sense = NULL;
3110         }
3111
3112         if (ioc->reply) {
3113                 pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
3114                 if (ioc->reply_dma_pool)
3115                         pci_pool_destroy(ioc->reply_dma_pool);
3116                 dexitprintk(ioc, pr_info(MPT3SAS_FMT
3117                         "reply_pool(0x%p): free\n",
3118                         ioc->name, ioc->reply));
3119                 ioc->reply = NULL;
3120         }
3121
3122         if (ioc->reply_free) {
3123                 pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
3124                     ioc->reply_free_dma);
3125                 if (ioc->reply_free_dma_pool)
3126                         pci_pool_destroy(ioc->reply_free_dma_pool);
3127                 dexitprintk(ioc, pr_info(MPT3SAS_FMT
3128                         "reply_free_pool(0x%p): free\n",
3129                         ioc->name, ioc->reply_free));
3130                 ioc->reply_free = NULL;
3131         }
3132
3133         if (ioc->reply_post) {
3134                 do {
3135                         rps = &ioc->reply_post[i];
3136                         if (rps->reply_post_free) {
3137                                 pci_pool_free(
3138                                     ioc->reply_post_free_dma_pool,
3139                                     rps->reply_post_free,
3140                                     rps->reply_post_free_dma);
3141                                 dexitprintk(ioc, pr_info(MPT3SAS_FMT
3142                                     "reply_post_free_pool(0x%p): free\n",
3143                                     ioc->name, rps->reply_post_free));
3144                                 rps->reply_post_free = NULL;
3145                         }
3146                 } while (ioc->rdpq_array_enable &&
3147                            (++i < ioc->reply_queue_count));
3148
3149                 if (ioc->reply_post_free_dma_pool)
3150                         pci_pool_destroy(ioc->reply_post_free_dma_pool);
3151                 kfree(ioc->reply_post);
3152         }
3153
3154         if (ioc->config_page) {
3155                 dexitprintk(ioc, pr_info(MPT3SAS_FMT
3156                     "config_page(0x%p): free\n", ioc->name,
3157                     ioc->config_page));
3158                 pci_free_consistent(ioc->pdev, ioc->config_page_sz,
3159                     ioc->config_page, ioc->config_page_dma);
3160         }
3161
3162         if (ioc->scsi_lookup) {
3163                 free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
3164                 ioc->scsi_lookup = NULL;
3165         }
3166         kfree(ioc->hpr_lookup);
3167         kfree(ioc->internal_lookup);
3168         if (ioc->chain_lookup) {
3169                 for (i = 0; i < ioc->chain_depth; i++) {
3170                         if (ioc->chain_lookup[i].chain_buffer)
3171                                 pci_pool_free(ioc->chain_dma_pool,
3172                                     ioc->chain_lookup[i].chain_buffer,
3173                                     ioc->chain_lookup[i].chain_buffer_dma);
3174                 }
3175                 if (ioc->chain_dma_pool)
3176                         pci_pool_destroy(ioc->chain_dma_pool);
3177                 free_pages((ulong)ioc->chain_lookup, ioc->chain_pages);
3178                 ioc->chain_lookup = NULL;
3179         }
3180 }
3181
3182 /**
3183  * _base_allocate_memory_pools - allocate start of day memory pools
3184  * @ioc: per adapter object
3185  *
3186  * Returns 0 success, anything else error
3187  */
3188 static int
3189 _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc)
3190 {
3191         struct mpt3sas_facts *facts;
3192         u16 max_sge_elements;
3193         u16 chains_needed_per_io;
3194         u32 sz, total_sz, reply_post_free_sz;
3195         u32 retry_sz;
3196         u16 max_request_credit;
3197         unsigned short sg_tablesize;
3198         u16 sge_size;
3199         int i;
3200
3201         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
3202             __func__));
3203
3204
3205         retry_sz = 0;
3206         facts = &ioc->facts;
3207
3208         /* command line tunables for max sgl entries */
3209         if (max_sgl_entries != -1)
3210                 sg_tablesize = max_sgl_entries;
3211         else {
3212                 if (ioc->hba_mpi_version_belonged == MPI2_VERSION)
3213                         sg_tablesize = MPT2SAS_SG_DEPTH;
3214                 else
3215                         sg_tablesize = MPT3SAS_SG_DEPTH;
3216         }
3217
3218         if (sg_tablesize < MPT_MIN_PHYS_SEGMENTS)
3219                 sg_tablesize = MPT_MIN_PHYS_SEGMENTS;
3220         else if (sg_tablesize > MPT_MAX_PHYS_SEGMENTS) {
3221                 sg_tablesize = min_t(unsigned short, sg_tablesize,
3222                                       SG_MAX_SEGMENTS);
3223                 pr_warn(MPT3SAS_FMT
3224                  "sg_tablesize(%u) is bigger than kernel"
3225                  " defined SG_CHUNK_SIZE(%u)\n", ioc->name,
3226                  sg_tablesize, MPT_MAX_PHYS_SEGMENTS);
3227         }
3228         ioc->shost->sg_tablesize = sg_tablesize;
3229
3230         ioc->internal_depth = min_t(int, (facts->HighPriorityCredit + (5)),
3231                 (facts->RequestCredit / 4));
3232         if (ioc->internal_depth < INTERNAL_CMDS_COUNT) {
3233                 if (facts->RequestCredit <= (INTERNAL_CMDS_COUNT +
3234                                 INTERNAL_SCSIIO_CMDS_COUNT)) {
3235                         pr_err(MPT3SAS_FMT "IOC doesn't have enough Request \
3236                             Credits, it has just %d number of credits\n",
3237                             ioc->name, facts->RequestCredit);
3238                         return -ENOMEM;
3239                 }
3240                 ioc->internal_depth = 10;
3241         }
3242
3243         ioc->hi_priority_depth = ioc->internal_depth - (5);
3244         /* command line tunables  for max controller queue depth */
3245         if (max_queue_depth != -1 && max_queue_depth != 0) {
3246                 max_request_credit = min_t(u16, max_queue_depth +
3247                         ioc->internal_depth, facts->RequestCredit);
3248                 if (max_request_credit > MAX_HBA_QUEUE_DEPTH)
3249                         max_request_credit =  MAX_HBA_QUEUE_DEPTH;
3250         } else
3251                 max_request_credit = min_t(u16, facts->RequestCredit,
3252                     MAX_HBA_QUEUE_DEPTH);
3253
3254         /* Firmware maintains additional facts->HighPriorityCredit number of
3255          * credits for HiPriprity Request messages, so hba queue depth will be
3256          * sum of max_request_credit and high priority queue depth.
3257          */
3258         ioc->hba_queue_depth = max_request_credit + ioc->hi_priority_depth;
3259
3260         /* request frame size */
3261         ioc->request_sz = facts->IOCRequestFrameSize * 4;
3262
3263         /* reply frame size */
3264         ioc->reply_sz = facts->ReplyFrameSize * 4;
3265
3266         /* chain segment size */
3267         if (ioc->hba_mpi_version_belonged != MPI2_VERSION) {
3268                 if (facts->IOCMaxChainSegmentSize)
3269                         ioc->chain_segment_sz =
3270                                         facts->IOCMaxChainSegmentSize *
3271                                         MAX_CHAIN_ELEMT_SZ;
3272                 else
3273                 /* set to 128 bytes size if IOCMaxChainSegmentSize is zero */
3274                         ioc->chain_segment_sz = DEFAULT_NUM_FWCHAIN_ELEMTS *
3275                                                     MAX_CHAIN_ELEMT_SZ;
3276         } else
3277                 ioc->chain_segment_sz = ioc->request_sz;
3278
3279         /* calculate the max scatter element size */
3280         sge_size = max_t(u16, ioc->sge_size, ioc->sge_size_ieee);
3281
3282  retry_allocation:
3283         total_sz = 0;
3284         /* calculate number of sg elements left over in the 1st frame */
3285         max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
3286             sizeof(Mpi2SGEIOUnion_t)) + sge_size);
3287         ioc->max_sges_in_main_message = max_sge_elements/sge_size;
3288
3289         /* now do the same for a chain buffer */
3290         max_sge_elements = ioc->chain_segment_sz - sge_size;
3291         ioc->max_sges_in_chain_message = max_sge_elements/sge_size;
3292
3293         /*
3294          *  MPT3SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
3295          */
3296         chains_needed_per_io = ((ioc->shost->sg_tablesize -
3297            ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
3298             + 1;
3299         if (chains_needed_per_io > facts->MaxChainDepth) {
3300                 chains_needed_per_io = facts->MaxChainDepth;
3301                 ioc->shost->sg_tablesize = min_t(u16,
3302                 ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
3303                 * chains_needed_per_io), ioc->shost->sg_tablesize);
3304         }
3305         ioc->chains_needed_per_io = chains_needed_per_io;
3306
3307         /* reply free queue sizing - taking into account for 64 FW events */
3308         ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
3309
3310         /* calculate reply descriptor post queue depth */
3311         ioc->reply_post_queue_depth = ioc->hba_queue_depth +
3312                                 ioc->reply_free_queue_depth +  1 ;
3313         /* align the reply post queue on the next 16 count boundary */
3314         if (ioc->reply_post_queue_depth % 16)
3315                 ioc->reply_post_queue_depth += 16 -
3316                 (ioc->reply_post_queue_depth % 16);
3317
3318         if (ioc->reply_post_queue_depth >
3319             facts->MaxReplyDescriptorPostQueueDepth) {
3320                 ioc->reply_post_queue_depth =
3321                                 facts->MaxReplyDescriptorPostQueueDepth -
3322                     (facts->MaxReplyDescriptorPostQueueDepth % 16);
3323                 ioc->hba_queue_depth =
3324                                 ((ioc->reply_post_queue_depth - 64) / 2) - 1;
3325                 ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
3326         }
3327
3328         dinitprintk(ioc, pr_info(MPT3SAS_FMT "scatter gather: " \
3329             "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
3330             "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
3331             ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
3332             ioc->chains_needed_per_io));
3333
3334         /* reply post queue, 16 byte align */
3335         reply_post_free_sz = ioc->reply_post_queue_depth *
3336             sizeof(Mpi2DefaultReplyDescriptor_t);
3337
3338         sz = reply_post_free_sz;
3339         if (_base_is_controller_msix_enabled(ioc) && !ioc->rdpq_array_enable)
3340                 sz *= ioc->reply_queue_count;
3341
3342         ioc->reply_post = kcalloc((ioc->rdpq_array_enable) ?
3343             (ioc->reply_queue_count):1,
3344             sizeof(struct reply_post_struct), GFP_KERNEL);
3345
3346         if (!ioc->reply_post) {
3347                 pr_err(MPT3SAS_FMT "reply_post_free pool: kcalloc failed\n",
3348                         ioc->name);
3349                 goto out;
3350         }
3351         ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
3352             ioc->pdev, sz, 16, 0);
3353         if (!ioc->reply_post_free_dma_pool) {
3354                 pr_err(MPT3SAS_FMT
3355                  "reply_post_free pool: pci_pool_create failed\n",
3356                  ioc->name);
3357                 goto out;
3358         }
3359         i = 0;
3360         do {
3361                 ioc->reply_post[i].reply_post_free =
3362                     pci_pool_alloc(ioc->reply_post_free_dma_pool,
3363                     GFP_KERNEL,
3364                     &ioc->reply_post[i].reply_post_free_dma);
3365                 if (!ioc->reply_post[i].reply_post_free) {
3366                         pr_err(MPT3SAS_FMT
3367                         "reply_post_free pool: pci_pool_alloc failed\n",
3368                         ioc->name);
3369                         goto out;
3370                 }
3371                 memset(ioc->reply_post[i].reply_post_free, 0, sz);
3372                 dinitprintk(ioc, pr_info(MPT3SAS_FMT
3373                     "reply post free pool (0x%p): depth(%d),"
3374                     "element_size(%d), pool_size(%d kB)\n", ioc->name,
3375                     ioc->reply_post[i].reply_post_free,
3376                     ioc->reply_post_queue_depth, 8, sz/1024));
3377                 dinitprintk(ioc, pr_info(MPT3SAS_FMT
3378                     "reply_post_free_dma = (0x%llx)\n", ioc->name,
3379                     (unsigned long long)
3380                     ioc->reply_post[i].reply_post_free_dma));
3381                 total_sz += sz;
3382         } while (ioc->rdpq_array_enable && (++i < ioc->reply_queue_count));
3383
3384         if (ioc->dma_mask == 64) {
3385                 if (_base_change_consistent_dma_mask(ioc, ioc->pdev) != 0) {
3386                         pr_warn(MPT3SAS_FMT
3387                             "no suitable consistent DMA mask for %s\n",
3388                             ioc->name, pci_name(ioc->pdev));
3389                         goto out;
3390                 }
3391         }
3392
3393         ioc->scsiio_depth = ioc->hba_queue_depth -
3394             ioc->hi_priority_depth - ioc->internal_depth;
3395
3396         /* set the scsi host can_queue depth
3397          * with some internal commands that could be outstanding
3398          */
3399         ioc->shost->can_queue = ioc->scsiio_depth - INTERNAL_SCSIIO_CMDS_COUNT;
3400         dinitprintk(ioc, pr_info(MPT3SAS_FMT
3401                 "scsi host: can_queue depth (%d)\n",
3402                 ioc->name, ioc->shost->can_queue));
3403
3404
3405         /* contiguous pool for request and chains, 16 byte align, one extra "
3406          * "frame for smid=0
3407          */
3408         ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth;
3409         sz = ((ioc->scsiio_depth + 1) * ioc->request_sz);
3410
3411         /* hi-priority queue */
3412         sz += (ioc->hi_priority_depth * ioc->request_sz);
3413
3414         /* internal queue */
3415         sz += (ioc->internal_depth * ioc->request_sz);
3416
3417         ioc->request_dma_sz = sz;
3418         ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
3419         if (!ioc->request) {
3420                 pr_err(MPT3SAS_FMT "request pool: pci_alloc_consistent " \
3421                     "failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
3422                     "total(%d kB)\n", ioc->name, ioc->hba_queue_depth,
3423                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
3424                 if (ioc->scsiio_depth < MPT3SAS_SAS_QUEUE_DEPTH)
3425                         goto out;
3426                 retry_sz = 64;
3427                 ioc->hba_queue_depth -= retry_sz;
3428                 _base_release_memory_pools(ioc);
3429                 goto retry_allocation;
3430         }
3431
3432         if (retry_sz)
3433                 pr_err(MPT3SAS_FMT "request pool: pci_alloc_consistent " \
3434                     "succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
3435                     "total(%d kb)\n", ioc->name, ioc->hba_queue_depth,
3436                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
3437
3438         /* hi-priority queue */
3439         ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) *
3440             ioc->request_sz);
3441         ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) *
3442             ioc->request_sz);
3443
3444         /* internal queue */
3445         ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth *
3446             ioc->request_sz);
3447         ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth *
3448             ioc->request_sz);
3449
3450         dinitprintk(ioc, pr_info(MPT3SAS_FMT
3451                 "request pool(0x%p): depth(%d), frame_size(%d), pool_size(%d kB)\n",
3452                 ioc->name, ioc->request, ioc->hba_queue_depth, ioc->request_sz,
3453             (ioc->hba_queue_depth * ioc->request_sz)/1024));
3454
3455         dinitprintk(ioc, pr_info(MPT3SAS_FMT "request pool: dma(0x%llx)\n",
3456             ioc->name, (unsigned long long) ioc->request_dma));
3457         total_sz += sz;
3458
3459         sz = ioc->scsiio_depth * sizeof(struct scsiio_tracker);
3460         ioc->scsi_lookup_pages = get_order(sz);
3461         ioc->scsi_lookup = (struct scsiio_tracker *)__get_free_pages(
3462             GFP_KERNEL, ioc->scsi_lookup_pages);
3463         if (!ioc->scsi_lookup) {
3464                 pr_err(MPT3SAS_FMT "scsi_lookup: get_free_pages failed, sz(%d)\n",
3465                         ioc->name, (int)sz);
3466                 goto out;
3467         }
3468
3469         dinitprintk(ioc, pr_info(MPT3SAS_FMT "scsiio(0x%p): depth(%d)\n",
3470                 ioc->name, ioc->request, ioc->scsiio_depth));
3471
3472         ioc->chain_depth = min_t(u32, ioc->chain_depth, MAX_CHAIN_DEPTH);
3473         sz = ioc->chain_depth * sizeof(struct chain_tracker);
3474         ioc->chain_pages = get_order(sz);
3475         ioc->chain_lookup = (struct chain_tracker *)__get_free_pages(
3476             GFP_KERNEL, ioc->chain_pages);
3477         if (!ioc->chain_lookup) {
3478                 pr_err(MPT3SAS_FMT "chain_lookup: __get_free_pages failed\n",
3479                         ioc->name);
3480                 goto out;
3481         }
3482         ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev,
3483             ioc->chain_segment_sz, 16, 0);
3484         if (!ioc->chain_dma_pool) {
3485                 pr_err(MPT3SAS_FMT "chain_dma_pool: pci_pool_create failed\n",
3486                         ioc->name);
3487                 goto out;
3488         }
3489         for (i = 0; i < ioc->chain_depth; i++) {
3490                 ioc->chain_lookup[i].chain_buffer = pci_pool_alloc(
3491                     ioc->chain_dma_pool , GFP_KERNEL,
3492                     &ioc->chain_lookup[i].chain_buffer_dma);
3493                 if (!ioc->chain_lookup[i].chain_buffer) {
3494                         ioc->chain_depth = i;
3495                         goto chain_done;
3496                 }
3497                 total_sz += ioc->chain_segment_sz;
3498         }
3499  chain_done:
3500         dinitprintk(ioc, pr_info(MPT3SAS_FMT
3501                 "chain pool depth(%d), frame_size(%d), pool_size(%d kB)\n",
3502                 ioc->name, ioc->chain_depth, ioc->chain_segment_sz,
3503                 ((ioc->chain_depth *  ioc->chain_segment_sz))/1024));
3504
3505         /* initialize hi-priority queue smid's */
3506         ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth,
3507             sizeof(struct request_tracker), GFP_KERNEL);
3508         if (!ioc->hpr_lookup) {
3509                 pr_err(MPT3SAS_FMT "hpr_lookup: kcalloc failed\n",
3510                     ioc->name);
3511                 goto out;
3512         }
3513         ioc->hi_priority_smid = ioc->scsiio_depth + 1;
3514         dinitprintk(ioc, pr_info(MPT3SAS_FMT
3515                 "hi_priority(0x%p): depth(%d), start smid(%d)\n",
3516                 ioc->name, ioc->hi_priority,
3517             ioc->hi_priority_depth, ioc->hi_priority_smid));
3518
3519         /* initialize internal queue smid's */
3520         ioc->internal_lookup = kcalloc(ioc->internal_depth,
3521             sizeof(struct request_tracker), GFP_KERNEL);
3522         if (!ioc->internal_lookup) {
3523                 pr_err(MPT3SAS_FMT "internal_lookup: kcalloc failed\n",
3524                     ioc->name);
3525                 goto out;
3526         }
3527         ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth;
3528         dinitprintk(ioc, pr_info(MPT3SAS_FMT
3529                 "internal(0x%p): depth(%d), start smid(%d)\n",
3530                 ioc->name, ioc->internal,
3531             ioc->internal_depth, ioc->internal_smid));
3532
3533         /* sense buffers, 4 byte align */
3534         sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE;
3535         ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
3536             0);
3537         if (!ioc->sense_dma_pool) {
3538                 pr_err(MPT3SAS_FMT "sense pool: pci_pool_create failed\n",
3539                     ioc->name);
3540                 goto out;
3541         }
3542         ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
3543             &ioc->sense_dma);
3544         if (!ioc->sense) {
3545                 pr_err(MPT3SAS_FMT "sense pool: pci_pool_alloc failed\n",
3546                     ioc->name);
3547                 goto out;
3548         }
3549         dinitprintk(ioc, pr_info(MPT3SAS_FMT
3550             "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
3551             "(%d kB)\n", ioc->name, ioc->sense, ioc->scsiio_depth,
3552             SCSI_SENSE_BUFFERSIZE, sz/1024));
3553         dinitprintk(ioc, pr_info(MPT3SAS_FMT "sense_dma(0x%llx)\n",
3554             ioc->name, (unsigned long long)ioc->sense_dma));
3555         total_sz += sz;
3556
3557         /* reply pool, 4 byte align */
3558         sz = ioc->reply_free_queue_depth * ioc->reply_sz;
3559         ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
3560             0);
3561         if (!ioc->reply_dma_pool) {
3562                 pr_err(MPT3SAS_FMT "reply pool: pci_pool_create failed\n",
3563                     ioc->name);
3564                 goto out;
3565         }
3566         ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
3567             &ioc->reply_dma);
3568         if (!ioc->reply) {
3569                 pr_err(MPT3SAS_FMT "reply pool: pci_pool_alloc failed\n",
3570                     ioc->name);
3571                 goto out;
3572         }
3573         ioc->reply_dma_min_address = (u32)(ioc->reply_dma);
3574         ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz;
3575         dinitprintk(ioc, pr_info(MPT3SAS_FMT
3576                 "reply pool(0x%p): depth(%d), frame_size(%d), pool_size(%d kB)\n",
3577                 ioc->name, ioc->reply,
3578             ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
3579         dinitprintk(ioc, pr_info(MPT3SAS_FMT "reply_dma(0x%llx)\n",
3580             ioc->name, (unsigned long long)ioc->reply_dma));
3581         total_sz += sz;
3582
3583         /* reply free queue, 16 byte align */
3584         sz = ioc->reply_free_queue_depth * 4;
3585         ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
3586             ioc->pdev, sz, 16, 0);
3587         if (!ioc->reply_free_dma_pool) {
3588                 pr_err(MPT3SAS_FMT "reply_free pool: pci_pool_create failed\n",
3589                         ioc->name);
3590                 goto out;
3591         }
3592         ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
3593             &ioc->reply_free_dma);
3594         if (!ioc->reply_free) {
3595                 pr_err(MPT3SAS_FMT "reply_free pool: pci_pool_alloc failed\n",
3596                         ioc->name);
3597                 goto out;
3598         }
3599         memset(ioc->reply_free, 0, sz);
3600         dinitprintk(ioc, pr_info(MPT3SAS_FMT "reply_free pool(0x%p): " \
3601             "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
3602             ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
3603         dinitprintk(ioc, pr_info(MPT3SAS_FMT
3604                 "reply_free_dma (0x%llx)\n",
3605                 ioc->name, (unsigned long long)ioc->reply_free_dma));
3606         total_sz += sz;
3607
3608         ioc->config_page_sz = 512;
3609         ioc->config_page = pci_alloc_consistent(ioc->pdev,
3610             ioc->config_page_sz, &ioc->config_page_dma);
3611         if (!ioc->config_page) {
3612                 pr_err(MPT3SAS_FMT
3613                         "config page: pci_pool_alloc failed\n",
3614                         ioc->name);
3615                 goto out;
3616         }
3617         dinitprintk(ioc, pr_info(MPT3SAS_FMT
3618                 "config page(0x%p): size(%d)\n",
3619                 ioc->name, ioc->config_page, ioc->config_page_sz));
3620         dinitprintk(ioc, pr_info(MPT3SAS_FMT "config_page_dma(0x%llx)\n",
3621                 ioc->name, (unsigned long long)ioc->config_page_dma));
3622         total_sz += ioc->config_page_sz;
3623
3624         pr_info(MPT3SAS_FMT "Allocated physical memory: size(%d kB)\n",
3625             ioc->name, total_sz/1024);
3626         pr_info(MPT3SAS_FMT
3627                 "Current Controller Queue Depth(%d),Max Controller Queue Depth(%d)\n",
3628             ioc->name, ioc->shost->can_queue, facts->RequestCredit);
3629         pr_info(MPT3SAS_FMT "Scatter Gather Elements per IO(%d)\n",
3630             ioc->name, ioc->shost->sg_tablesize);
3631         return 0;
3632
3633  out:
3634         return -ENOMEM;
3635 }
3636
3637 /**
3638  * mpt3sas_base_get_iocstate - Get the current state of a MPT adapter.
3639  * @ioc: Pointer to MPT_ADAPTER structure
3640  * @cooked: Request raw or cooked IOC state
3641  *
3642  * Returns all IOC Doorbell register bits if cooked==0, else just the
3643  * Doorbell bits in MPI_IOC_STATE_MASK.
3644  */
3645 u32
3646 mpt3sas_base_get_iocstate(struct MPT3SAS_ADAPTER *ioc, int cooked)
3647 {
3648         u32 s, sc;
3649
3650         s = readl(&ioc->chip->Doorbell);
3651         sc = s & MPI2_IOC_STATE_MASK;
3652         return cooked ? sc : s;
3653 }
3654
3655 /**
3656  * _base_wait_on_iocstate - waiting on a particular ioc state
3657  * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
3658  * @timeout: timeout in second
3659  *
3660  * Returns 0 for success, non-zero for failure.
3661  */
3662 static int
3663 _base_wait_on_iocstate(struct MPT3SAS_ADAPTER *ioc, u32 ioc_state, int timeout)
3664 {
3665         u32 count, cntdn;
3666         u32 current_state;
3667
3668         count = 0;
3669         cntdn = 1000 * timeout;
3670         do {
3671                 current_state = mpt3sas_base_get_iocstate(ioc, 1);
3672                 if (current_state == ioc_state)
3673                         return 0;
3674                 if (count && current_state == MPI2_IOC_STATE_FAULT)
3675                         break;
3676
3677                 usleep_range(1000, 1500);
3678                 count++;
3679         } while (--cntdn);
3680
3681         return current_state;
3682 }
3683
3684 /**
3685  * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
3686  * a write to the doorbell)
3687  * @ioc: per adapter object
3688  * @timeout: timeout in second
3689  *
3690  * Returns 0 for success, non-zero for failure.
3691  *
3692  * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
3693  */
3694 static int
3695 _base_diag_reset(struct MPT3SAS_ADAPTER *ioc);
3696
3697 static int
3698 _base_wait_for_doorbell_int(struct MPT3SAS_ADAPTER *ioc, int timeout)
3699 {
3700         u32 cntdn, count;
3701         u32 int_status;
3702
3703         count = 0;
3704         cntdn = 1000 * timeout;
3705         do {
3706                 int_status = readl(&ioc->chip->HostInterruptStatus);
3707                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
3708                         dhsprintk(ioc, pr_info(MPT3SAS_FMT
3709                                 "%s: successful count(%d), timeout(%d)\n",
3710                                 ioc->name, __func__, count, timeout));
3711                         return 0;
3712                 }
3713
3714                 usleep_range(1000, 1500);
3715                 count++;
3716         } while (--cntdn);
3717
3718         pr_err(MPT3SAS_FMT
3719                 "%s: failed due to timeout count(%d), int_status(%x)!\n",
3720                 ioc->name, __func__, count, int_status);
3721         return -EFAULT;
3722 }
3723
3724 static int
3725 _base_spin_on_doorbell_int(struct MPT3SAS_ADAPTER *ioc, int timeout)
3726 {
3727         u32 cntdn, count;
3728         u32 int_status;
3729
3730         count = 0;
3731         cntdn = 2000 * timeout;
3732         do {
3733                 int_status = readl(&ioc->chip->HostInterruptStatus);
3734                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
3735                         dhsprintk(ioc, pr_info(MPT3SAS_FMT
3736                                 "%s: successful count(%d), timeout(%d)\n",
3737                                 ioc->name, __func__, count, timeout));
3738                         return 0;
3739                 }
3740
3741                 udelay(500);
3742                 count++;
3743         } while (--cntdn);
3744
3745         pr_err(MPT3SAS_FMT
3746                 "%s: failed due to timeout count(%d), int_status(%x)!\n",
3747                 ioc->name, __func__, count, int_status);
3748         return -EFAULT;
3749
3750 }
3751
3752 /**
3753  * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
3754  * @ioc: per adapter object
3755  * @timeout: timeout in second
3756  *
3757  * Returns 0 for success, non-zero for failure.
3758  *
3759  * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
3760  * doorbell.
3761  */
3762 static int
3763 _base_wait_for_doorbell_ack(struct MPT3SAS_ADAPTER *ioc, int timeout)
3764 {
3765         u32 cntdn, count;
3766         u32 int_status;
3767         u32 doorbell;
3768
3769         count = 0;
3770         cntdn = 1000 * timeout;
3771         do {
3772                 int_status = readl(&ioc->chip->HostInterruptStatus);
3773                 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
3774                         dhsprintk(ioc, pr_info(MPT3SAS_FMT
3775                                 "%s: successful count(%d), timeout(%d)\n",
3776                                 ioc->name, __func__, count, timeout));
3777                         return 0;
3778                 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
3779                         doorbell = readl(&ioc->chip->Doorbell);
3780                         if ((doorbell & MPI2_IOC_STATE_MASK) ==
3781                             MPI2_IOC_STATE_FAULT) {
3782                                 mpt3sas_base_fault_info(ioc , doorbell);
3783                                 return -EFAULT;
3784                         }
3785                 } else if (int_status == 0xFFFFFFFF)
3786                         goto out;
3787
3788                 usleep_range(1000, 1500);
3789                 count++;
3790         } while (--cntdn);
3791
3792  out:
3793         pr_err(MPT3SAS_FMT
3794          "%s: failed due to timeout count(%d), int_status(%x)!\n",
3795          ioc->name, __func__, count, int_status);
3796         return -EFAULT;
3797 }
3798
3799 /**
3800  * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
3801  * @ioc: per adapter object
3802  * @timeout: timeout in second
3803  *
3804  * Returns 0 for success, non-zero for failure.
3805  *
3806  */
3807 static int
3808 _base_wait_for_doorbell_not_used(struct MPT3SAS_ADAPTER *ioc, int timeout)
3809 {
3810         u32 cntdn, count;
3811         u32 doorbell_reg;
3812
3813         count = 0;
3814         cntdn = 1000 * timeout;
3815         do {
3816                 doorbell_reg = readl(&ioc->chip->Doorbell);
3817                 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
3818                         dhsprintk(ioc, pr_info(MPT3SAS_FMT
3819                                 "%s: successful count(%d), timeout(%d)\n",
3820                                 ioc->name, __func__, count, timeout));
3821                         return 0;
3822                 }
3823
3824                 usleep_range(1000, 1500);
3825                 count++;
3826         } while (--cntdn);
3827
3828         pr_err(MPT3SAS_FMT
3829                 "%s: failed due to timeout count(%d), doorbell_reg(%x)!\n",
3830                 ioc->name, __func__, count, doorbell_reg);
3831         return -EFAULT;
3832 }
3833
3834 /**
3835  * _base_send_ioc_reset - send doorbell reset
3836  * @ioc: per adapter object
3837  * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
3838  * @timeout: timeout in second
3839  *
3840  * Returns 0 for success, non-zero for failure.
3841  */
3842 static int
3843 _base_send_ioc_reset(struct MPT3SAS_ADAPTER *ioc, u8 reset_type, int timeout)
3844 {
3845         u32 ioc_state;
3846         int r = 0;
3847
3848         if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
3849                 pr_err(MPT3SAS_FMT "%s: unknown reset_type\n",
3850                     ioc->name, __func__);
3851                 return -EFAULT;
3852         }
3853
3854         if (!(ioc->facts.IOCCapabilities &
3855            MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
3856                 return -EFAULT;
3857
3858         pr_info(MPT3SAS_FMT "sending message unit reset !!\n", ioc->name);
3859
3860         writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
3861             &ioc->chip->Doorbell);
3862         if ((_base_wait_for_doorbell_ack(ioc, 15))) {
3863                 r = -EFAULT;
3864                 goto out;
3865         }
3866         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, timeout);
3867         if (ioc_state) {
3868                 pr_err(MPT3SAS_FMT
3869                         "%s: failed going to ready state (ioc_state=0x%x)\n",
3870                         ioc->name, __func__, ioc_state);
3871                 r = -EFAULT;
3872                 goto out;
3873         }
3874  out:
3875         pr_info(MPT3SAS_FMT "message unit reset: %s\n",
3876             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
3877         return r;
3878 }
3879
3880 /**
3881  * _base_handshake_req_reply_wait - send request thru doorbell interface
3882  * @ioc: per adapter object
3883  * @request_bytes: request length
3884  * @request: pointer having request payload
3885  * @reply_bytes: reply length
3886  * @reply: pointer to reply payload
3887  * @timeout: timeout in second
3888  *
3889  * Returns 0 for success, non-zero for failure.
3890  */
3891 static int
3892 _base_handshake_req_reply_wait(struct MPT3SAS_ADAPTER *ioc, int request_bytes,
3893         u32 *request, int reply_bytes, u16 *reply, int timeout)
3894 {
3895         MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
3896         int i;
3897         u8 failed;
3898         __le32 *mfp;
3899
3900         /* make sure doorbell is not in use */
3901         if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
3902                 pr_err(MPT3SAS_FMT
3903                         "doorbell is in use (line=%d)\n",
3904                         ioc->name, __LINE__);
3905                 return -EFAULT;
3906         }
3907
3908         /* clear pending doorbell interrupts from previous state changes */
3909         if (readl(&ioc->chip->HostInterruptStatus) &
3910             MPI2_HIS_IOC2SYS_DB_STATUS)
3911                 writel(0, &ioc->chip->HostInterruptStatus);
3912
3913         /* send message to ioc */
3914         writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
3915             ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
3916             &ioc->chip->Doorbell);
3917
3918         if ((_base_spin_on_doorbell_int(ioc, 5))) {
3919                 pr_err(MPT3SAS_FMT
3920                         "doorbell handshake int failed (line=%d)\n",
3921                         ioc->name, __LINE__);
3922                 return -EFAULT;
3923         }
3924         writel(0, &ioc->chip->HostInterruptStatus);
3925
3926         if ((_base_wait_for_doorbell_ack(ioc, 5))) {
3927                 pr_err(MPT3SAS_FMT
3928                         "doorbell handshake ack failed (line=%d)\n",
3929                         ioc->name, __LINE__);
3930                 return -EFAULT;
3931         }
3932
3933         /* send message 32-bits at a time */
3934         for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
3935                 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
3936                 if ((_base_wait_for_doorbell_ack(ioc, 5)))
3937                         failed = 1;
3938         }
3939
3940         if (failed) {
3941                 pr_err(MPT3SAS_FMT
3942                         "doorbell handshake sending request failed (line=%d)\n",
3943                         ioc->name, __LINE__);
3944                 return -EFAULT;
3945         }
3946
3947         /* now wait for the reply */
3948         if ((_base_wait_for_doorbell_int(ioc, timeout))) {
3949                 pr_err(MPT3SAS_FMT
3950                         "doorbell handshake int failed (line=%d)\n",
3951                         ioc->name, __LINE__);
3952                 return -EFAULT;
3953         }
3954
3955         /* read the first two 16-bits, it gives the total length of the reply */
3956         reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3957             & MPI2_DOORBELL_DATA_MASK);
3958         writel(0, &ioc->chip->HostInterruptStatus);
3959         if ((_base_wait_for_doorbell_int(ioc, 5))) {
3960                 pr_err(MPT3SAS_FMT
3961                         "doorbell handshake int failed (line=%d)\n",
3962                         ioc->name, __LINE__);
3963                 return -EFAULT;
3964         }
3965         reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3966             & MPI2_DOORBELL_DATA_MASK);
3967         writel(0, &ioc->chip->HostInterruptStatus);
3968
3969         for (i = 2; i < default_reply->MsgLength * 2; i++)  {
3970                 if ((_base_wait_for_doorbell_int(ioc, 5))) {
3971                         pr_err(MPT3SAS_FMT
3972                                 "doorbell handshake int failed (line=%d)\n",
3973                                 ioc->name, __LINE__);
3974                         return -EFAULT;
3975                 }
3976                 if (i >=  reply_bytes/2) /* overflow case */
3977                         readl(&ioc->chip->Doorbell);
3978                 else
3979                         reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3980                             & MPI2_DOORBELL_DATA_MASK);
3981                 writel(0, &ioc->chip->HostInterruptStatus);
3982         }
3983
3984         _base_wait_for_doorbell_int(ioc, 5);
3985         if (_base_wait_for_doorbell_not_used(ioc, 5) != 0) {
3986                 dhsprintk(ioc, pr_info(MPT3SAS_FMT
3987                         "doorbell is in use (line=%d)\n", ioc->name, __LINE__));
3988         }
3989         writel(0, &ioc->chip->HostInterruptStatus);
3990
3991         if (ioc->logging_level & MPT_DEBUG_INIT) {
3992                 mfp = (__le32 *)reply;
3993                 pr_info("\toffset:data\n");
3994                 for (i = 0; i < reply_bytes/4; i++)
3995                         pr_info("\t[0x%02x]:%08x\n", i*4,
3996                             le32_to_cpu(mfp[i]));
3997         }
3998         return 0;
3999 }
4000
4001 /**
4002  * mpt3sas_base_sas_iounit_control - send sas iounit control to FW
4003  * @ioc: per adapter object
4004  * @mpi_reply: the reply payload from FW
4005  * @mpi_request: the request payload sent to FW
4006  *
4007  * The SAS IO Unit Control Request message allows the host to perform low-level
4008  * operations, such as resets on the PHYs of the IO Unit, also allows the host
4009  * to obtain the IOC assigned device handles for a device if it has other
4010  * identifying information about the device, in addition allows the host to
4011  * remove IOC resources associated with the device.
4012  *
4013  * Returns 0 for success, non-zero for failure.
4014  */
4015 int
4016 mpt3sas_base_sas_iounit_control(struct MPT3SAS_ADAPTER *ioc,
4017         Mpi2SasIoUnitControlReply_t *mpi_reply,
4018         Mpi2SasIoUnitControlRequest_t *mpi_request)
4019 {
4020         u16 smid;
4021         u32 ioc_state;
4022         bool issue_reset = false;
4023         int rc;
4024         void *request;
4025         u16 wait_state_count;
4026
4027         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
4028             __func__));
4029
4030         mutex_lock(&ioc->base_cmds.mutex);
4031
4032         if (ioc->base_cmds.status != MPT3_CMD_NOT_USED) {
4033                 pr_err(MPT3SAS_FMT "%s: base_cmd in use\n",
4034                     ioc->name, __func__);
4035                 rc = -EAGAIN;
4036                 goto out;
4037         }
4038
4039         wait_state_count = 0;
4040         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
4041         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
4042                 if (wait_state_count++ == 10) {
4043                         pr_err(MPT3SAS_FMT
4044                             "%s: failed due to ioc not operational\n",
4045                             ioc->name, __func__);
4046                         rc = -EFAULT;
4047                         goto out;
4048                 }
4049                 ssleep(1);
4050                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
4051                 pr_info(MPT3SAS_FMT
4052                         "%s: waiting for operational state(count=%d)\n",
4053                         ioc->name, __func__, wait_state_count);
4054         }
4055
4056         smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx);
4057         if (!smid) {
4058                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4059                     ioc->name, __func__);
4060                 rc = -EAGAIN;
4061                 goto out;
4062         }
4063
4064         rc = 0;
4065         ioc->base_cmds.status = MPT3_CMD_PENDING;
4066         request = mpt3sas_base_get_msg_frame(ioc, smid);
4067         ioc->base_cmds.smid = smid;
4068         memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
4069         if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
4070             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
4071                 ioc->ioc_link_reset_in_progress = 1;
4072         init_completion(&ioc->base_cmds.done);
4073         mpt3sas_base_put_smid_default(ioc, smid);
4074         wait_for_completion_timeout(&ioc->base_cmds.done,
4075             msecs_to_jiffies(10000));
4076         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
4077             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
4078             ioc->ioc_link_reset_in_progress)
4079                 ioc->ioc_link_reset_in_progress = 0;
4080         if (!(ioc->base_cmds.status & MPT3_CMD_COMPLETE)) {
4081                 pr_err(MPT3SAS_FMT "%s: timeout\n",
4082                     ioc->name, __func__);
4083                 _debug_dump_mf(mpi_request,
4084                     sizeof(Mpi2SasIoUnitControlRequest_t)/4);
4085                 if (!(ioc->base_cmds.status & MPT3_CMD_RESET))
4086                         issue_reset = true;
4087                 goto issue_host_reset;
4088         }
4089         if (ioc->base_cmds.status & MPT3_CMD_REPLY_VALID)
4090                 memcpy(mpi_reply, ioc->base_cmds.reply,
4091                     sizeof(Mpi2SasIoUnitControlReply_t));
4092         else
4093                 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
4094         ioc->base_cmds.status = MPT3_CMD_NOT_USED;
4095         goto out;
4096
4097  issue_host_reset:
4098         if (issue_reset)
4099                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
4100         ioc->base_cmds.status = MPT3_CMD_NOT_USED;
4101         rc = -EFAULT;
4102  out:
4103         mutex_unlock(&ioc->base_cmds.mutex);
4104         return rc;
4105 }
4106
4107 /**
4108  * mpt3sas_base_scsi_enclosure_processor - sending request to sep device
4109  * @ioc: per adapter object
4110  * @mpi_reply: the reply payload from FW
4111  * @mpi_request: the request payload sent to FW
4112  *
4113  * The SCSI Enclosure Processor request message causes the IOC to
4114  * communicate with SES devices to control LED status signals.
4115  *
4116  * Returns 0 for success, non-zero for failure.
4117  */
4118 int
4119 mpt3sas_base_scsi_enclosure_processor(struct MPT3SAS_ADAPTER *ioc,
4120         Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
4121 {
4122         u16 smid;
4123         u32 ioc_state;
4124         bool issue_reset = false;
4125         int rc;
4126         void *request;
4127         u16 wait_state_count;
4128
4129         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
4130             __func__));
4131
4132         mutex_lock(&ioc->base_cmds.mutex);
4133
4134         if (ioc->base_cmds.status != MPT3_CMD_NOT_USED) {
4135                 pr_err(MPT3SAS_FMT "%s: base_cmd in use\n",
4136                     ioc->name, __func__);
4137                 rc = -EAGAIN;
4138                 goto out;
4139         }
4140
4141         wait_state_count = 0;
4142         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
4143         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
4144                 if (wait_state_count++ == 10) {
4145                         pr_err(MPT3SAS_FMT
4146                             "%s: failed due to ioc not operational\n",
4147                             ioc->name, __func__);
4148                         rc = -EFAULT;
4149                         goto out;
4150                 }
4151                 ssleep(1);
4152                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
4153                 pr_info(MPT3SAS_FMT
4154                         "%s: waiting for operational state(count=%d)\n",
4155                         ioc->name,
4156                     __func__, wait_state_count);
4157         }
4158
4159         smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx);
4160         if (!smid) {
4161                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4162                     ioc->name, __func__);
4163                 rc = -EAGAIN;
4164                 goto out;
4165         }
4166
4167         rc = 0;
4168         ioc->base_cmds.status = MPT3_CMD_PENDING;
4169         request = mpt3sas_base_get_msg_frame(ioc, smid);
4170         ioc->base_cmds.smid = smid;
4171         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
4172         init_completion(&ioc->base_cmds.done);
4173         mpt3sas_base_put_smid_default(ioc, smid);
4174         wait_for_completion_timeout(&ioc->base_cmds.done,
4175             msecs_to_jiffies(10000));
4176         if (!(ioc->base_cmds.status & MPT3_CMD_COMPLETE)) {
4177                 pr_err(MPT3SAS_FMT "%s: timeout\n",
4178                     ioc->name, __func__);
4179                 _debug_dump_mf(mpi_request,
4180                     sizeof(Mpi2SepRequest_t)/4);
4181                 if (!(ioc->base_cmds.status & MPT3_CMD_RESET))
4182                         issue_reset = false;
4183                 goto issue_host_reset;
4184         }
4185         if (ioc->base_cmds.status & MPT3_CMD_REPLY_VALID)
4186                 memcpy(mpi_reply, ioc->base_cmds.reply,
4187                     sizeof(Mpi2SepReply_t));
4188         else
4189                 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
4190         ioc->base_cmds.status = MPT3_CMD_NOT_USED;
4191         goto out;
4192
4193  issue_host_reset:
4194         if (issue_reset)
4195                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
4196         ioc->base_cmds.status = MPT3_CMD_NOT_USED;
4197         rc = -EFAULT;
4198  out:
4199         mutex_unlock(&ioc->base_cmds.mutex);
4200         return rc;
4201 }
4202
4203 /**
4204  * _base_get_port_facts - obtain port facts reply and save in ioc
4205  * @ioc: per adapter object
4206  *
4207  * Returns 0 for success, non-zero for failure.
4208  */
4209 static int
4210 _base_get_port_facts(struct MPT3SAS_ADAPTER *ioc, int port)
4211 {
4212         Mpi2PortFactsRequest_t mpi_request;
4213         Mpi2PortFactsReply_t mpi_reply;
4214         struct mpt3sas_port_facts *pfacts;
4215         int mpi_reply_sz, mpi_request_sz, r;
4216
4217         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
4218             __func__));
4219
4220         mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
4221         mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
4222         memset(&mpi_request, 0, mpi_request_sz);
4223         mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
4224         mpi_request.PortNumber = port;
4225         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
4226             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5);
4227
4228         if (r != 0) {
4229                 pr_err(MPT3SAS_FMT "%s: handshake failed (r=%d)\n",
4230                     ioc->name, __func__, r);
4231                 return r;
4232         }
4233
4234         pfacts = &ioc->pfacts[port];
4235         memset(pfacts, 0, sizeof(struct mpt3sas_port_facts));
4236         pfacts->PortNumber = mpi_reply.PortNumber;
4237         pfacts->VP_ID = mpi_reply.VP_ID;
4238         pfacts->VF_ID = mpi_reply.VF_ID;
4239         pfacts->MaxPostedCmdBuffers =
4240             le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
4241
4242         return 0;
4243 }
4244
4245 /**
4246  * _base_wait_for_iocstate - Wait until the card is in READY or OPERATIONAL
4247  * @ioc: per adapter object
4248  * @timeout:
4249  *
4250  * Returns 0 for success, non-zero for failure.
4251  */
4252 static int
4253 _base_wait_for_iocstate(struct MPT3SAS_ADAPTER *ioc, int timeout)
4254 {
4255         u32 ioc_state;
4256         int rc;
4257
4258         dinitprintk(ioc, printk(MPT3SAS_FMT "%s\n", ioc->name,
4259             __func__));
4260
4261         if (ioc->pci_error_recovery) {
4262                 dfailprintk(ioc, printk(MPT3SAS_FMT
4263                     "%s: host in pci error recovery\n", ioc->name, __func__));
4264                 return -EFAULT;
4265         }
4266
4267         ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
4268         dhsprintk(ioc, printk(MPT3SAS_FMT "%s: ioc_state(0x%08x)\n",
4269             ioc->name, __func__, ioc_state));
4270
4271         if (((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY) ||
4272             (ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
4273                 return 0;
4274
4275         if (ioc_state & MPI2_DOORBELL_USED) {
4276                 dhsprintk(ioc, printk(MPT3SAS_FMT
4277                     "unexpected doorbell active!\n", ioc->name));
4278                 goto issue_diag_reset;
4279         }
4280
4281         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
4282                 mpt3sas_base_fault_info(ioc, ioc_state &
4283                     MPI2_DOORBELL_DATA_MASK);
4284                 goto issue_diag_reset;
4285         }
4286
4287         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, timeout);
4288         if (ioc_state) {
4289                 dfailprintk(ioc, printk(MPT3SAS_FMT
4290                     "%s: failed going to ready state (ioc_state=0x%x)\n",
4291                     ioc->name, __func__, ioc_state));
4292                 return -EFAULT;
4293         }
4294
4295  issue_diag_reset:
4296         rc = _base_diag_reset(ioc);
4297         return rc;
4298 }
4299
4300 /**
4301  * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
4302  * @ioc: per adapter object
4303  *
4304  * Returns 0 for success, non-zero for failure.
4305  */
4306 static int
4307 _base_get_ioc_facts(struct MPT3SAS_ADAPTER *ioc)
4308 {
4309         Mpi2IOCFactsRequest_t mpi_request;
4310         Mpi2IOCFactsReply_t mpi_reply;
4311         struct mpt3sas_facts *facts;
4312         int mpi_reply_sz, mpi_request_sz, r;
4313
4314         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
4315             __func__));
4316
4317         r = _base_wait_for_iocstate(ioc, 10);
4318         if (r) {
4319                 dfailprintk(ioc, printk(MPT3SAS_FMT
4320                     "%s: failed getting to correct state\n",
4321                     ioc->name, __func__));
4322                 return r;
4323         }
4324         mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
4325         mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
4326         memset(&mpi_request, 0, mpi_request_sz);
4327         mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
4328         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
4329             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5);
4330
4331         if (r != 0) {
4332                 pr_err(MPT3SAS_FMT "%s: handshake failed (r=%d)\n",
4333                     ioc->name, __func__, r);
4334                 return r;
4335         }
4336
4337         facts = &ioc->facts;
4338         memset(facts, 0, sizeof(struct mpt3sas_facts));
4339         facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
4340         facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
4341         facts->VP_ID = mpi_reply.VP_ID;
4342         facts->VF_ID = mpi_reply.VF_ID;
4343         facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
4344         facts->MaxChainDepth = mpi_reply.MaxChainDepth;
4345         facts->WhoInit = mpi_reply.WhoInit;
4346         facts->NumberOfPorts = mpi_reply.NumberOfPorts;
4347         facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors;
4348         facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
4349         facts->MaxReplyDescriptorPostQueueDepth =
4350             le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
4351         facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
4352         facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
4353         if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
4354                 ioc->ir_firmware = 1;
4355         if ((facts->IOCCapabilities &
4356               MPI2_IOCFACTS_CAPABILITY_RDPQ_ARRAY_CAPABLE))
4357                 ioc->rdpq_array_capable = 1;
4358         facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
4359         facts->IOCRequestFrameSize =
4360             le16_to_cpu(mpi_reply.IOCRequestFrameSize);
4361         if (ioc->hba_mpi_version_belonged != MPI2_VERSION) {
4362                 facts->IOCMaxChainSegmentSize =
4363                         le16_to_cpu(mpi_reply.IOCMaxChainSegmentSize);
4364         }
4365         facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
4366         facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
4367         ioc->shost->max_id = -1;
4368         facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
4369         facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
4370         facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
4371         facts->HighPriorityCredit =
4372             le16_to_cpu(mpi_reply.HighPriorityCredit);
4373         facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
4374         facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
4375
4376         dinitprintk(ioc, pr_info(MPT3SAS_FMT
4377                 "hba queue depth(%d), max chains per io(%d)\n",
4378                 ioc->name, facts->RequestCredit,
4379             facts->MaxChainDepth));
4380         dinitprintk(ioc, pr_info(MPT3SAS_FMT
4381                 "request frame size(%d), reply frame size(%d)\n", ioc->name,
4382             facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
4383         return 0;
4384 }
4385
4386 /**
4387  * _base_send_ioc_init - send ioc_init to firmware
4388  * @ioc: per adapter object
4389  *
4390  * Returns 0 for success, non-zero for failure.
4391  */
4392 static int
4393 _base_send_ioc_init(struct MPT3SAS_ADAPTER *ioc)
4394 {
4395         Mpi2IOCInitRequest_t mpi_request;
4396         Mpi2IOCInitReply_t mpi_reply;
4397         int i, r = 0;
4398         ktime_t current_time;
4399         u16 ioc_status;
4400         u32 reply_post_free_array_sz = 0;
4401         Mpi2IOCInitRDPQArrayEntry *reply_post_free_array = NULL;
4402         dma_addr_t reply_post_free_array_dma;
4403
4404         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
4405             __func__));
4406
4407         memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
4408         mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
4409         mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
4410         mpi_request.VF_ID = 0; /* TODO */
4411         mpi_request.VP_ID = 0;
4412         mpi_request.MsgVersion = cpu_to_le16(ioc->hba_mpi_version_belonged);
4413         mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
4414
4415         if (_base_is_controller_msix_enabled(ioc))
4416                 mpi_request.HostMSIxVectors = ioc->reply_queue_count;
4417         mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
4418         mpi_request.ReplyDescriptorPostQueueDepth =
4419             cpu_to_le16(ioc->reply_post_queue_depth);
4420         mpi_request.ReplyFreeQueueDepth =
4421             cpu_to_le16(ioc->reply_free_queue_depth);
4422
4423         mpi_request.SenseBufferAddressHigh =
4424             cpu_to_le32((u64)ioc->sense_dma >> 32);
4425         mpi_request.SystemReplyAddressHigh =
4426             cpu_to_le32((u64)ioc->reply_dma >> 32);
4427         mpi_request.SystemRequestFrameBaseAddress =
4428             cpu_to_le64((u64)ioc->request_dma);
4429         mpi_request.ReplyFreeQueueAddress =
4430             cpu_to_le64((u64)ioc->reply_free_dma);
4431
4432         if (ioc->rdpq_array_enable) {
4433                 reply_post_free_array_sz = ioc->reply_queue_count *
4434                     sizeof(Mpi2IOCInitRDPQArrayEntry);
4435                 reply_post_free_array = pci_alloc_consistent(ioc->pdev,
4436                         reply_post_free_array_sz, &reply_post_free_array_dma);
4437                 if (!reply_post_free_array) {
4438                         pr_err(MPT3SAS_FMT
4439                         "reply_post_free_array: pci_alloc_consistent failed\n",
4440                         ioc->name);
4441                         r = -ENOMEM;
4442                         goto out;
4443                 }
4444                 memset(reply_post_free_array, 0, reply_post_free_array_sz);
4445                 for (i = 0; i < ioc->reply_queue_count; i++)
4446                         reply_post_free_array[i].RDPQBaseAddress =
4447                             cpu_to_le64(
4448                                 (u64)ioc->reply_post[i].reply_post_free_dma);
4449                 mpi_request.MsgFlags = MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE;
4450                 mpi_request.ReplyDescriptorPostQueueAddress =
4451                     cpu_to_le64((u64)reply_post_free_array_dma);
4452         } else {
4453                 mpi_request.ReplyDescriptorPostQueueAddress =
4454                     cpu_to_le64((u64)ioc->reply_post[0].reply_post_free_dma);
4455         }
4456
4457         /* This time stamp specifies number of milliseconds
4458          * since epoch ~ midnight January 1, 1970.
4459          */
4460         current_time = ktime_get_real();
4461         mpi_request.TimeStamp = cpu_to_le64(ktime_to_ms(current_time));
4462
4463         if (ioc->logging_level & MPT_DEBUG_INIT) {
4464                 __le32 *mfp;
4465                 int i;
4466
4467                 mfp = (__le32 *)&mpi_request;
4468                 pr_info("\toffset:data\n");
4469                 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
4470                         pr_info("\t[0x%02x]:%08x\n", i*4,
4471                             le32_to_cpu(mfp[i]));
4472         }
4473
4474         r = _base_handshake_req_reply_wait(ioc,
4475             sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
4476             sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10);
4477
4478         if (r != 0) {
4479                 pr_err(MPT3SAS_FMT "%s: handshake failed (r=%d)\n",
4480                     ioc->name, __func__, r);
4481                 goto out;
4482         }
4483
4484         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
4485         if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
4486             mpi_reply.IOCLogInfo) {
4487                 pr_err(MPT3SAS_FMT "%s: failed\n", ioc->name, __func__);
4488                 r = -EIO;
4489         }
4490
4491 out:
4492         if (reply_post_free_array)
4493                 pci_free_consistent(ioc->pdev, reply_post_free_array_sz,
4494                                     reply_post_free_array,
4495                                     reply_post_free_array_dma);
4496         return r;
4497 }
4498
4499 /**
4500  * mpt3sas_port_enable_done - command completion routine for port enable
4501  * @ioc: per adapter object
4502  * @smid: system request message index
4503  * @msix_index: MSIX table index supplied by the OS
4504  * @reply: reply message frame(lower 32bit addr)
4505  *
4506  * Return 1 meaning mf should be freed from _base_interrupt
4507  *        0 means the mf is freed from this function.
4508  */
4509 u8
4510 mpt3sas_port_enable_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
4511         u32 reply)
4512 {
4513         MPI2DefaultReply_t *mpi_reply;
4514         u16 ioc_status;
4515
4516         if (ioc->port_enable_cmds.status == MPT3_CMD_NOT_USED)
4517                 return 1;
4518
4519         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
4520         if (!mpi_reply)
4521                 return 1;
4522
4523         if (mpi_reply->Function != MPI2_FUNCTION_PORT_ENABLE)
4524                 return 1;
4525
4526         ioc->port_enable_cmds.status &= ~MPT3_CMD_PENDING;
4527         ioc->port_enable_cmds.status |= MPT3_CMD_COMPLETE;
4528         ioc->port_enable_cmds.status |= MPT3_CMD_REPLY_VALID;
4529         memcpy(ioc->port_enable_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
4530         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
4531         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
4532                 ioc->port_enable_failed = 1;
4533
4534         if (ioc->is_driver_loading) {
4535                 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
4536                         mpt3sas_port_enable_complete(ioc);
4537                         return 1;
4538                 } else {
4539                         ioc->start_scan_failed = ioc_status;
4540                         ioc->start_scan = 0;
4541                         return 1;
4542                 }
4543         }
4544         complete(&ioc->port_enable_cmds.done);
4545         return 1;
4546 }
4547
4548 /**
4549  * _base_send_port_enable - send port_enable(discovery stuff) to firmware
4550  * @ioc: per adapter object
4551  *
4552  * Returns 0 for success, non-zero for failure.
4553  */
4554 static int
4555 _base_send_port_enable(struct MPT3SAS_ADAPTER *ioc)
4556 {
4557         Mpi2PortEnableRequest_t *mpi_request;
4558         Mpi2PortEnableReply_t *mpi_reply;
4559         int r = 0;
4560         u16 smid;
4561         u16 ioc_status;
4562
4563         pr_info(MPT3SAS_FMT "sending port enable !!\n", ioc->name);
4564
4565         if (ioc->port_enable_cmds.status & MPT3_CMD_PENDING) {
4566                 pr_err(MPT3SAS_FMT "%s: internal command already in use\n",
4567                     ioc->name, __func__);
4568                 return -EAGAIN;
4569         }
4570
4571         smid = mpt3sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
4572         if (!smid) {
4573                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4574                     ioc->name, __func__);
4575                 return -EAGAIN;
4576         }
4577
4578         ioc->port_enable_cmds.status = MPT3_CMD_PENDING;
4579         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4580         ioc->port_enable_cmds.smid = smid;
4581         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
4582         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
4583
4584         init_completion(&ioc->port_enable_cmds.done);
4585         mpt3sas_base_put_smid_default(ioc, smid);
4586         wait_for_completion_timeout(&ioc->port_enable_cmds.done, 300*HZ);
4587         if (!(ioc->port_enable_cmds.status & MPT3_CMD_COMPLETE)) {
4588                 pr_err(MPT3SAS_FMT "%s: timeout\n",
4589                     ioc->name, __func__);
4590                 _debug_dump_mf(mpi_request,
4591                     sizeof(Mpi2PortEnableRequest_t)/4);
4592                 if (ioc->port_enable_cmds.status & MPT3_CMD_RESET)
4593                         r = -EFAULT;
4594                 else
4595                         r = -ETIME;
4596                 goto out;
4597         }
4598
4599         mpi_reply = ioc->port_enable_cmds.reply;
4600         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
4601         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
4602                 pr_err(MPT3SAS_FMT "%s: failed with (ioc_status=0x%08x)\n",
4603                     ioc->name, __func__, ioc_status);
4604                 r = -EFAULT;
4605                 goto out;
4606         }
4607
4608  out:
4609         ioc->port_enable_cmds.status = MPT3_CMD_NOT_USED;
4610         pr_info(MPT3SAS_FMT "port enable: %s\n", ioc->name, ((r == 0) ?
4611             "SUCCESS" : "FAILED"));
4612         return r;
4613 }
4614
4615 /**
4616  * mpt3sas_port_enable - initiate firmware discovery (don't wait for reply)
4617  * @ioc: per adapter object
4618  *
4619  * Returns 0 for success, non-zero for failure.
4620  */
4621 int
4622 mpt3sas_port_enable(struct MPT3SAS_ADAPTER *ioc)
4623 {
4624         Mpi2PortEnableRequest_t *mpi_request;
4625         u16 smid;
4626
4627         pr_info(MPT3SAS_FMT "sending port enable !!\n", ioc->name);
4628
4629         if (ioc->port_enable_cmds.status & MPT3_CMD_PENDING) {
4630                 pr_err(MPT3SAS_FMT "%s: internal command already in use\n",
4631                     ioc->name, __func__);
4632                 return -EAGAIN;
4633         }
4634
4635         smid = mpt3sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
4636         if (!smid) {
4637                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4638                     ioc->name, __func__);
4639                 return -EAGAIN;
4640         }
4641
4642         ioc->port_enable_cmds.status = MPT3_CMD_PENDING;
4643         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4644         ioc->port_enable_cmds.smid = smid;
4645         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
4646         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
4647
4648         mpt3sas_base_put_smid_default(ioc, smid);
4649         return 0;
4650 }
4651
4652 /**
4653  * _base_determine_wait_on_discovery - desposition
4654  * @ioc: per adapter object
4655  *
4656  * Decide whether to wait on discovery to complete. Used to either
4657  * locate boot device, or report volumes ahead of physical devices.
4658  *
4659  * Returns 1 for wait, 0 for don't wait
4660  */
4661 static int
4662 _base_determine_wait_on_discovery(struct MPT3SAS_ADAPTER *ioc)
4663 {
4664         /* We wait for discovery to complete if IR firmware is loaded.
4665          * The sas topology events arrive before PD events, so we need time to
4666          * turn on the bit in ioc->pd_handles to indicate PD
4667          * Also, it maybe required to report Volumes ahead of physical
4668          * devices when MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING is set.
4669          */
4670         if (ioc->ir_firmware)
4671                 return 1;
4672
4673         /* if no Bios, then we don't need to wait */
4674         if (!ioc->bios_pg3.BiosVersion)
4675                 return 0;
4676
4677         /* Bios is present, then we drop down here.
4678          *
4679          * If there any entries in the Bios Page 2, then we wait
4680          * for discovery to complete.
4681          */
4682
4683         /* Current Boot Device */
4684         if ((ioc->bios_pg2.CurrentBootDeviceForm &
4685             MPI2_BIOSPAGE2_FORM_MASK) ==
4686             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
4687         /* Request Boot Device */
4688            (ioc->bios_pg2.ReqBootDeviceForm &
4689             MPI2_BIOSPAGE2_FORM_MASK) ==
4690             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
4691         /* Alternate Request Boot Device */
4692            (ioc->bios_pg2.ReqAltBootDeviceForm &
4693             MPI2_BIOSPAGE2_FORM_MASK) ==
4694             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED)
4695                 return 0;
4696
4697         return 1;
4698 }
4699
4700 /**
4701  * _base_unmask_events - turn on notification for this event
4702  * @ioc: per adapter object
4703  * @event: firmware event
4704  *
4705  * The mask is stored in ioc->event_masks.
4706  */
4707 static void
4708 _base_unmask_events(struct MPT3SAS_ADAPTER *ioc, u16 event)
4709 {
4710         u32 desired_event;
4711
4712         if (event >= 128)
4713                 return;
4714
4715         desired_event = (1 << (event % 32));
4716
4717         if (event < 32)
4718                 ioc->event_masks[0] &= ~desired_event;
4719         else if (event < 64)
4720                 ioc->event_masks[1] &= ~desired_event;
4721         else if (event < 96)
4722                 ioc->event_masks[2] &= ~desired_event;
4723         else if (event < 128)
4724                 ioc->event_masks[3] &= ~desired_event;
4725 }
4726
4727 /**
4728  * _base_event_notification - send event notification
4729  * @ioc: per adapter object
4730  *
4731  * Returns 0 for success, non-zero for failure.
4732  */
4733 static int
4734 _base_event_notification(struct MPT3SAS_ADAPTER *ioc)
4735 {
4736         Mpi2EventNotificationRequest_t *mpi_request;
4737         u16 smid;
4738         int r = 0;
4739         int i;
4740
4741         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
4742             __func__));
4743
4744         if (ioc->base_cmds.status & MPT3_CMD_PENDING) {
4745                 pr_err(MPT3SAS_FMT "%s: internal command already in use\n",
4746                     ioc->name, __func__);
4747                 return -EAGAIN;
4748         }
4749
4750         smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx);
4751         if (!smid) {
4752                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4753                     ioc->name, __func__);
4754                 return -EAGAIN;
4755         }
4756         ioc->base_cmds.status = MPT3_CMD_PENDING;
4757         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4758         ioc->base_cmds.smid = smid;
4759         memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
4760         mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
4761         mpi_request->VF_ID = 0; /* TODO */
4762         mpi_request->VP_ID = 0;
4763         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4764                 mpi_request->EventMasks[i] =
4765                     cpu_to_le32(ioc->event_masks[i]);
4766         init_completion(&ioc->base_cmds.done);
4767         mpt3sas_base_put_smid_default(ioc, smid);
4768         wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
4769         if (!(ioc->base_cmds.status & MPT3_CMD_COMPLETE)) {
4770                 pr_err(MPT3SAS_FMT "%s: timeout\n",
4771                     ioc->name, __func__);
4772                 _debug_dump_mf(mpi_request,
4773                     sizeof(Mpi2EventNotificationRequest_t)/4);
4774                 if (ioc->base_cmds.status & MPT3_CMD_RESET)
4775                         r = -EFAULT;
4776                 else
4777                         r = -ETIME;
4778         } else
4779                 dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s: complete\n",
4780                     ioc->name, __func__));
4781         ioc->base_cmds.status = MPT3_CMD_NOT_USED;
4782         return r;
4783 }
4784
4785 /**
4786  * mpt3sas_base_validate_event_type - validating event types
4787  * @ioc: per adapter object
4788  * @event: firmware event
4789  *
4790  * This will turn on firmware event notification when application
4791  * ask for that event. We don't mask events that are already enabled.
4792  */
4793 void
4794 mpt3sas_base_validate_event_type(struct MPT3SAS_ADAPTER *ioc, u32 *event_type)
4795 {
4796         int i, j;
4797         u32 event_mask, desired_event;
4798         u8 send_update_to_fw;
4799
4800         for (i = 0, send_update_to_fw = 0; i <
4801             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
4802                 event_mask = ~event_type[i];
4803                 desired_event = 1;
4804                 for (j = 0; j < 32; j++) {
4805                         if (!(event_mask & desired_event) &&
4806                             (ioc->event_masks[i] & desired_event)) {
4807                                 ioc->event_masks[i] &= ~desired_event;
4808                                 send_update_to_fw = 1;
4809                         }
4810                         desired_event = (desired_event << 1);
4811                 }
4812         }
4813
4814         if (!send_update_to_fw)
4815                 return;
4816
4817         mutex_lock(&ioc->base_cmds.mutex);
4818         _base_event_notification(ioc);
4819         mutex_unlock(&ioc->base_cmds.mutex);
4820 }
4821
4822 /**
4823  * _base_diag_reset - the "big hammer" start of day reset
4824  * @ioc: per adapter object
4825  *
4826  * Returns 0 for success, non-zero for failure.
4827  */
4828 static int
4829 _base_diag_reset(struct MPT3SAS_ADAPTER *ioc)
4830 {
4831         u32 host_diagnostic;
4832         u32 ioc_state;
4833         u32 count;
4834         u32 hcb_size;
4835
4836         pr_info(MPT3SAS_FMT "sending diag reset !!\n", ioc->name);
4837
4838         drsprintk(ioc, pr_info(MPT3SAS_FMT "clear interrupts\n",
4839             ioc->name));
4840
4841         count = 0;
4842         do {
4843                 /* Write magic sequence to WriteSequence register
4844                  * Loop until in diagnostic mode
4845                  */
4846                 drsprintk(ioc, pr_info(MPT3SAS_FMT
4847                         "write magic sequence\n", ioc->name));
4848                 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
4849                 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
4850                 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
4851                 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
4852                 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
4853                 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
4854                 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
4855
4856                 /* wait 100 msec */
4857                 msleep(100);
4858
4859                 if (count++ > 20)
4860                         goto out;
4861
4862                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
4863                 drsprintk(ioc, pr_info(MPT3SAS_FMT
4864                         "wrote magic sequence: count(%d), host_diagnostic(0x%08x)\n",
4865                     ioc->name, count, host_diagnostic));
4866
4867         } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
4868
4869         hcb_size = readl(&ioc->chip->HCBSize);
4870
4871         drsprintk(ioc, pr_info(MPT3SAS_FMT "diag reset: issued\n",
4872             ioc->name));
4873         writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
4874              &ioc->chip->HostDiagnostic);
4875
4876         /*This delay allows the chip PCIe hardware time to finish reset tasks*/
4877         msleep(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000);
4878
4879         /* Approximately 300 second max wait */
4880         for (count = 0; count < (300000000 /
4881                 MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC); count++) {
4882
4883                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
4884
4885                 if (host_diagnostic == 0xFFFFFFFF)
4886                         goto out;
4887                 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
4888                         break;
4889
4890                 msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC / 1000);
4891         }
4892
4893         if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
4894
4895                 drsprintk(ioc, pr_info(MPT3SAS_FMT
4896                 "restart the adapter assuming the HCB Address points to good F/W\n",
4897                     ioc->name));
4898                 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
4899                 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
4900                 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
4901
4902                 drsprintk(ioc, pr_info(MPT3SAS_FMT
4903                     "re-enable the HCDW\n", ioc->name));
4904                 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
4905                     &ioc->chip->HCBSize);
4906         }
4907
4908         drsprintk(ioc, pr_info(MPT3SAS_FMT "restart the adapter\n",
4909             ioc->name));
4910         writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
4911             &ioc->chip->HostDiagnostic);
4912
4913         drsprintk(ioc, pr_info(MPT3SAS_FMT
4914                 "disable writes to the diagnostic register\n", ioc->name));
4915         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
4916
4917         drsprintk(ioc, pr_info(MPT3SAS_FMT
4918                 "Wait for FW to go to the READY state\n", ioc->name));
4919         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20);
4920         if (ioc_state) {
4921                 pr_err(MPT3SAS_FMT
4922                         "%s: failed going to ready state (ioc_state=0x%x)\n",
4923                         ioc->name, __func__, ioc_state);
4924                 goto out;
4925         }
4926
4927         pr_info(MPT3SAS_FMT "diag reset: SUCCESS\n", ioc->name);
4928         return 0;
4929
4930  out:
4931         pr_err(MPT3SAS_FMT "diag reset: FAILED\n", ioc->name);
4932         return -EFAULT;
4933 }
4934
4935 /**
4936  * _base_make_ioc_ready - put controller in READY state
4937  * @ioc: per adapter object
4938  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4939  *
4940  * Returns 0 for success, non-zero for failure.
4941  */
4942 static int
4943 _base_make_ioc_ready(struct MPT3SAS_ADAPTER *ioc, enum reset_type type)
4944 {
4945         u32 ioc_state;
4946         int rc;
4947         int count;
4948
4949         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
4950             __func__));
4951
4952         if (ioc->pci_error_recovery)
4953                 return 0;
4954
4955         ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
4956         dhsprintk(ioc, pr_info(MPT3SAS_FMT "%s: ioc_state(0x%08x)\n",
4957             ioc->name, __func__, ioc_state));
4958
4959         /* if in RESET state, it should move to READY state shortly */
4960         count = 0;
4961         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_RESET) {
4962                 while ((ioc_state & MPI2_IOC_STATE_MASK) !=
4963                     MPI2_IOC_STATE_READY) {
4964                         if (count++ == 10) {
4965                                 pr_err(MPT3SAS_FMT
4966                                         "%s: failed going to ready state (ioc_state=0x%x)\n",
4967                                     ioc->name, __func__, ioc_state);
4968                                 return -EFAULT;
4969                         }
4970                         ssleep(1);
4971                         ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
4972                 }
4973         }
4974
4975         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
4976                 return 0;
4977
4978         if (ioc_state & MPI2_DOORBELL_USED) {
4979                 dhsprintk(ioc, pr_info(MPT3SAS_FMT
4980                         "unexpected doorbell active!\n",
4981                         ioc->name));
4982                 goto issue_diag_reset;
4983         }
4984
4985         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
4986                 mpt3sas_base_fault_info(ioc, ioc_state &
4987                     MPI2_DOORBELL_DATA_MASK);
4988                 goto issue_diag_reset;
4989         }
4990
4991         if (type == FORCE_BIG_HAMMER)
4992                 goto issue_diag_reset;
4993
4994         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
4995                 if (!(_base_send_ioc_reset(ioc,
4996                     MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15))) {
4997                         return 0;
4998         }
4999
5000  issue_diag_reset:
5001         rc = _base_diag_reset(ioc);
5002         return rc;
5003 }
5004
5005 /**
5006  * _base_make_ioc_operational - put controller in OPERATIONAL state
5007  * @ioc: per adapter object
5008  *
5009  * Returns 0 for success, non-zero for failure.
5010  */
5011 static int
5012 _base_make_ioc_operational(struct MPT3SAS_ADAPTER *ioc)
5013 {
5014         int r, i, index;
5015         unsigned long   flags;
5016         u32 reply_address;
5017         u16 smid;
5018         struct _tr_list *delayed_tr, *delayed_tr_next;
5019         struct _sc_list *delayed_sc, *delayed_sc_next;
5020         struct _event_ack_list *delayed_event_ack, *delayed_event_ack_next;
5021         u8 hide_flag;
5022         struct adapter_reply_queue *reply_q;
5023         Mpi2ReplyDescriptorsUnion_t *reply_post_free_contig;
5024
5025         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
5026             __func__));
5027
5028         /* clean the delayed target reset list */
5029         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
5030             &ioc->delayed_tr_list, list) {
5031                 list_del(&delayed_tr->list);
5032                 kfree(delayed_tr);
5033         }
5034
5035
5036         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
5037             &ioc->delayed_tr_volume_list, list) {
5038                 list_del(&delayed_tr->list);
5039                 kfree(delayed_tr);
5040         }
5041
5042         list_for_each_entry_safe(delayed_sc, delayed_sc_next,
5043             &ioc->delayed_sc_list, list) {
5044                 list_del(&delayed_sc->list);
5045                 kfree(delayed_sc);
5046         }
5047
5048         list_for_each_entry_safe(delayed_event_ack, delayed_event_ack_next,
5049             &ioc->delayed_event_ack_list, list) {
5050                 list_del(&delayed_event_ack->list);
5051                 kfree(delayed_event_ack);
5052         }
5053
5054         /* initialize the scsi lookup free list */
5055         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
5056         INIT_LIST_HEAD(&ioc->free_list);
5057         smid = 1;
5058         for (i = 0; i < ioc->scsiio_depth; i++, smid++) {
5059                 INIT_LIST_HEAD(&ioc->scsi_lookup[i].chain_list);
5060                 ioc->scsi_lookup[i].cb_idx = 0xFF;
5061                 ioc->scsi_lookup[i].smid = smid;
5062                 ioc->scsi_lookup[i].scmd = NULL;
5063                 ioc->scsi_lookup[i].direct_io = 0;
5064                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
5065                     &ioc->free_list);
5066         }
5067
5068         /* hi-priority queue */
5069         INIT_LIST_HEAD(&ioc->hpr_free_list);
5070         smid = ioc->hi_priority_smid;
5071         for (i = 0; i < ioc->hi_priority_depth; i++, smid++) {
5072                 ioc->hpr_lookup[i].cb_idx = 0xFF;
5073                 ioc->hpr_lookup[i].smid = smid;
5074                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
5075                     &ioc->hpr_free_list);
5076         }
5077
5078         /* internal queue */
5079         INIT_LIST_HEAD(&ioc->internal_free_list);
5080         smid = ioc->internal_smid;
5081         for (i = 0; i < ioc->internal_depth; i++, smid++) {
5082                 ioc->internal_lookup[i].cb_idx = 0xFF;
5083                 ioc->internal_lookup[i].smid = smid;
5084                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
5085                     &ioc->internal_free_list);
5086         }
5087
5088         /* chain pool */
5089         INIT_LIST_HEAD(&ioc->free_chain_list);
5090         for (i = 0; i < ioc->chain_depth; i++)
5091                 list_add_tail(&ioc->chain_lookup[i].tracker_list,
5092                     &ioc->free_chain_list);
5093
5094         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
5095
5096         /* initialize Reply Free Queue */
5097         for (i = 0, reply_address = (u32)ioc->reply_dma ;
5098             i < ioc->reply_free_queue_depth ; i++, reply_address +=
5099             ioc->reply_sz)
5100                 ioc->reply_free[i] = cpu_to_le32(reply_address);
5101
5102         /* initialize reply queues */
5103         if (ioc->is_driver_loading)
5104                 _base_assign_reply_queues(ioc);
5105
5106         /* initialize Reply Post Free Queue */
5107         index = 0;
5108         reply_post_free_contig = ioc->reply_post[0].reply_post_free;
5109         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
5110                 /*
5111                  * If RDPQ is enabled, switch to the next allocation.
5112                  * Otherwise advance within the contiguous region.
5113                  */
5114                 if (ioc->rdpq_array_enable) {
5115                         reply_q->reply_post_free =
5116                                 ioc->reply_post[index++].reply_post_free;
5117                 } else {
5118                         reply_q->reply_post_free = reply_post_free_contig;
5119                         reply_post_free_contig += ioc->reply_post_queue_depth;
5120                 }
5121
5122                 reply_q->reply_post_host_index = 0;
5123                 for (i = 0; i < ioc->reply_post_queue_depth; i++)
5124                         reply_q->reply_post_free[i].Words =
5125                             cpu_to_le64(ULLONG_MAX);
5126                 if (!_base_is_controller_msix_enabled(ioc))
5127                         goto skip_init_reply_post_free_queue;
5128         }
5129  skip_init_reply_post_free_queue:
5130
5131         r = _base_send_ioc_init(ioc);
5132         if (r)
5133                 return r;
5134
5135         /* initialize reply free host index */
5136         ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
5137         writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
5138
5139         /* initialize reply post host index */
5140         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
5141                 if (ioc->msix96_vector)
5142                         writel((reply_q->msix_index & 7)<<
5143                            MPI2_RPHI_MSIX_INDEX_SHIFT,
5144                            ioc->replyPostRegisterIndex[reply_q->msix_index/8]);
5145                 else
5146                         writel(reply_q->msix_index <<
5147                                 MPI2_RPHI_MSIX_INDEX_SHIFT,
5148                                 &ioc->chip->ReplyPostHostIndex);
5149
5150                 if (!_base_is_controller_msix_enabled(ioc))
5151                         goto skip_init_reply_post_host_index;
5152         }
5153
5154  skip_init_reply_post_host_index:
5155
5156         _base_unmask_interrupts(ioc);
5157         r = _base_event_notification(ioc);
5158         if (r)
5159                 return r;
5160
5161         _base_static_config_pages(ioc);
5162
5163         if (ioc->is_driver_loading) {
5164
5165                 if (ioc->is_warpdrive && ioc->manu_pg10.OEMIdentifier
5166                     == 0x80) {
5167                         hide_flag = (u8) (
5168                             le32_to_cpu(ioc->manu_pg10.OEMSpecificFlags0) &
5169                             MFG_PAGE10_HIDE_SSDS_MASK);
5170                         if (hide_flag != MFG_PAGE10_HIDE_SSDS_MASK)
5171                                 ioc->mfg_pg10_hide_flag = hide_flag;
5172                 }
5173
5174                 ioc->wait_for_discovery_to_complete =
5175                     _base_determine_wait_on_discovery(ioc);
5176
5177                 return r; /* scan_start and scan_finished support */
5178         }
5179
5180         r = _base_send_port_enable(ioc);
5181         if (r)
5182                 return r;
5183
5184         return r;
5185 }
5186
5187 /**
5188  * mpt3sas_base_free_resources - free resources controller resources
5189  * @ioc: per adapter object
5190  *
5191  * Return nothing.
5192  */
5193 void
5194 mpt3sas_base_free_resources(struct MPT3SAS_ADAPTER *ioc)
5195 {
5196         dexitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
5197             __func__));
5198
5199         /* synchronizing freeing resource with pci_access_mutex lock */
5200         mutex_lock(&ioc->pci_access_mutex);
5201         if (ioc->chip_phys && ioc->chip) {
5202                 _base_mask_interrupts(ioc);
5203                 ioc->shost_recovery = 1;
5204                 _base_make_ioc_ready(ioc, SOFT_RESET);
5205                 ioc->shost_recovery = 0;
5206         }
5207
5208         mpt3sas_base_unmap_resources(ioc);
5209         mutex_unlock(&ioc->pci_access_mutex);
5210         return;
5211 }
5212
5213 /**
5214  * mpt3sas_base_attach - attach controller instance
5215  * @ioc: per adapter object
5216  *
5217  * Returns 0 for success, non-zero for failure.
5218  */
5219 int
5220 mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc)
5221 {
5222         int r, i;
5223         int cpu_id, last_cpu_id = 0;
5224
5225         dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
5226             __func__));
5227
5228         /* setup cpu_msix_table */
5229         ioc->cpu_count = num_online_cpus();
5230         for_each_online_cpu(cpu_id)
5231                 last_cpu_id = cpu_id;
5232         ioc->cpu_msix_table_sz = last_cpu_id + 1;
5233         ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL);
5234         ioc->reply_queue_count = 1;
5235         if (!ioc->cpu_msix_table) {
5236                 dfailprintk(ioc, pr_info(MPT3SAS_FMT
5237                         "allocation for cpu_msix_table failed!!!\n",
5238                         ioc->name));
5239                 r = -ENOMEM;
5240                 goto out_free_resources;
5241         }
5242
5243         if (ioc->is_warpdrive) {
5244                 ioc->reply_post_host_index = kcalloc(ioc->cpu_msix_table_sz,
5245                     sizeof(resource_size_t *), GFP_KERNEL);
5246                 if (!ioc->reply_post_host_index) {
5247                         dfailprintk(ioc, pr_info(MPT3SAS_FMT "allocation "
5248                                 "for cpu_msix_table failed!!!\n", ioc->name));
5249                         r = -ENOMEM;
5250                         goto out_free_resources;
5251                 }
5252         }
5253
5254         ioc->rdpq_array_enable_assigned = 0;
5255         ioc->dma_mask = 0;
5256         r = mpt3sas_base_map_resources(ioc);
5257         if (r)
5258                 goto out_free_resources;
5259
5260         pci_set_drvdata(ioc->pdev, ioc->shost);
5261         r = _base_get_ioc_facts(ioc);
5262         if (r)
5263                 goto out_free_resources;
5264
5265         switch (ioc->hba_mpi_version_belonged) {
5266         case MPI2_VERSION:
5267                 ioc->build_sg_scmd = &_base_build_sg_scmd;
5268                 ioc->build_sg = &_base_build_sg;
5269                 ioc->build_zero_len_sge = &_base_build_zero_len_sge;
5270                 break;
5271         case MPI25_VERSION:
5272         case MPI26_VERSION:
5273                 /*
5274                  * In SAS3.0,
5275                  * SCSI_IO, SMP_PASSTHRU, SATA_PASSTHRU, Target Assist, and
5276                  * Target Status - all require the IEEE formated scatter gather
5277                  * elements.
5278                  */
5279                 ioc->build_sg_scmd = &_base_build_sg_scmd_ieee;
5280                 ioc->build_sg = &_base_build_sg_ieee;
5281                 ioc->build_zero_len_sge = &_base_build_zero_len_sge_ieee;
5282                 ioc->sge_size_ieee = sizeof(Mpi2IeeeSgeSimple64_t);
5283                 break;
5284         }
5285
5286         /*
5287          * These function pointers for other requests that don't
5288          * the require IEEE scatter gather elements.
5289          *
5290          * For example Configuration Pages and SAS IOUNIT Control don't.
5291          */
5292         ioc->build_sg_mpi = &_base_build_sg;
5293         ioc->build_zero_len_sge_mpi = &_base_build_zero_len_sge;
5294
5295         r = _base_make_ioc_ready(ioc, SOFT_RESET);
5296         if (r)
5297                 goto out_free_resources;
5298
5299         ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
5300             sizeof(struct mpt3sas_port_facts), GFP_KERNEL);
5301         if (!ioc->pfacts) {
5302                 r = -ENOMEM;
5303                 goto out_free_resources;
5304         }
5305
5306         for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
5307                 r = _base_get_port_facts(ioc, i);
5308                 if (r)
5309                         goto out_free_resources;
5310         }
5311
5312         r = _base_allocate_memory_pools(ioc);
5313         if (r)
5314                 goto out_free_resources;
5315
5316         init_waitqueue_head(&ioc->reset_wq);
5317
5318         /* allocate memory pd handle bitmask list */
5319         ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8);
5320         if (ioc->facts.MaxDevHandle % 8)
5321                 ioc->pd_handles_sz++;
5322         ioc->pd_handles = kzalloc(ioc->pd_handles_sz,
5323             GFP_KERNEL);
5324         if (!ioc->pd_handles) {
5325                 r = -ENOMEM;
5326                 goto out_free_resources;
5327         }
5328         ioc->blocking_handles = kzalloc(ioc->pd_handles_sz,
5329             GFP_KERNEL);
5330         if (!ioc->blocking_handles) {
5331                 r = -ENOMEM;
5332                 goto out_free_resources;
5333         }
5334
5335         ioc->fwfault_debug = mpt3sas_fwfault_debug;
5336
5337         /* base internal command bits */
5338         mutex_init(&ioc->base_cmds.mutex);
5339         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
5340         ioc->base_cmds.status = MPT3_CMD_NOT_USED;
5341
5342         /* port_enable command bits */
5343         ioc->port_enable_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
5344         ioc->port_enable_cmds.status = MPT3_CMD_NOT_USED;
5345
5346         /* transport internal command bits */
5347         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
5348         ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
5349         mutex_init(&ioc->transport_cmds.mutex);
5350
5351         /* scsih internal command bits */
5352         ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
5353         ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
5354         mutex_init(&ioc->scsih_cmds.mutex);
5355
5356         /* task management internal command bits */
5357         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
5358         ioc->tm_cmds.status = MPT3_CMD_NOT_USED;
5359         mutex_init(&ioc->tm_cmds.mutex);
5360
5361         /* config page internal command bits */
5362         ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
5363         ioc->config_cmds.status = MPT3_CMD_NOT_USED;
5364         mutex_init(&ioc->config_cmds.mutex);
5365
5366         /* ctl module internal command bits */
5367         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
5368         ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
5369         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
5370         mutex_init(&ioc->ctl_cmds.mutex);
5371
5372         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
5373             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
5374             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply ||
5375             !ioc->ctl_cmds.sense) {
5376                 r = -ENOMEM;
5377                 goto out_free_resources;
5378         }
5379
5380         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
5381                 ioc->event_masks[i] = -1;
5382
5383         /* here we enable the events we care about */
5384         _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
5385         _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
5386         _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
5387         _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
5388         _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
5389         _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
5390         _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
5391         _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
5392         _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
5393         _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
5394         _base_unmask_events(ioc, MPI2_EVENT_TEMP_THRESHOLD);
5395         if (ioc->hba_mpi_version_belonged == MPI26_VERSION)
5396                 _base_unmask_events(ioc, MPI2_EVENT_ACTIVE_CABLE_EXCEPTION);
5397
5398         r = _base_make_ioc_operational(ioc);
5399         if (r)
5400                 goto out_free_resources;
5401
5402         ioc->non_operational_loop = 0;
5403         return 0;
5404
5405  out_free_resources:
5406
5407         ioc->remove_host = 1;
5408
5409         mpt3sas_base_free_resources(ioc);
5410         _base_release_memory_pools(ioc);
5411         pci_set_drvdata(ioc->pdev, NULL);
5412         kfree(ioc->cpu_msix_table);
5413         if (ioc->is_warpdrive)
5414                 kfree(ioc->reply_post_host_index);
5415         kfree(ioc->pd_handles);
5416         kfree(ioc->blocking_handles);
5417         kfree(ioc->tm_cmds.reply);
5418         kfree(ioc->transport_cmds.reply);
5419         kfree(ioc->scsih_cmds.reply);
5420         kfree(ioc->config_cmds.reply);
5421         kfree(ioc->base_cmds.reply);
5422         kfree(ioc->port_enable_cmds.reply);
5423         kfree(ioc->ctl_cmds.reply);
5424         kfree(ioc->ctl_cmds.sense);
5425         kfree(ioc->pfacts);
5426         ioc->ctl_cmds.reply = NULL;
5427         ioc->base_cmds.reply = NULL;
5428         ioc->tm_cmds.reply = NULL;
5429         ioc->scsih_cmds.reply = NULL;
5430         ioc->transport_cmds.reply = NULL;
5431         ioc->config_cmds.reply = NULL;
5432         ioc->pfacts = NULL;
5433         return r;
5434 }
5435
5436
5437 /**
5438  * mpt3sas_base_detach - remove controller instance
5439  * @ioc: per adapter object
5440  *
5441  * Return nothing.
5442  */
5443 void
5444 mpt3sas_base_detach(struct MPT3SAS_ADAPTER *ioc)
5445 {
5446         dexitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
5447             __func__));
5448
5449         mpt3sas_base_stop_watchdog(ioc);
5450         mpt3sas_base_free_resources(ioc);
5451         _base_release_memory_pools(ioc);
5452         pci_set_drvdata(ioc->pdev, NULL);
5453         kfree(ioc->cpu_msix_table);
5454         if (ioc->is_warpdrive)
5455                 kfree(ioc->reply_post_host_index);
5456         kfree(ioc->pd_handles);
5457         kfree(ioc->blocking_handles);
5458         kfree(ioc->pfacts);
5459         kfree(ioc->ctl_cmds.reply);
5460         kfree(ioc->ctl_cmds.sense);
5461         kfree(ioc->base_cmds.reply);
5462         kfree(ioc->port_enable_cmds.reply);
5463         kfree(ioc->tm_cmds.reply);
5464         kfree(ioc->transport_cmds.reply);
5465         kfree(ioc->scsih_cmds.reply);
5466         kfree(ioc->config_cmds.reply);
5467 }
5468
5469 /**
5470  * _base_reset_handler - reset callback handler (for base)
5471  * @ioc: per adapter object
5472  * @reset_phase: phase
5473  *
5474  * The handler for doing any required cleanup or initialization.
5475  *
5476  * The reset phase can be MPT3_IOC_PRE_RESET, MPT3_IOC_AFTER_RESET,
5477  * MPT3_IOC_DONE_RESET
5478  *
5479  * Return nothing.
5480  */
5481 static void
5482 _base_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
5483 {
5484         mpt3sas_scsih_reset_handler(ioc, reset_phase);
5485         mpt3sas_ctl_reset_handler(ioc, reset_phase);
5486         switch (reset_phase) {
5487         case MPT3_IOC_PRE_RESET:
5488                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
5489                 "%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
5490                 break;
5491         case MPT3_IOC_AFTER_RESET:
5492                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
5493                 "%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
5494                 if (ioc->transport_cmds.status & MPT3_CMD_PENDING) {
5495                         ioc->transport_cmds.status |= MPT3_CMD_RESET;
5496                         mpt3sas_base_free_smid(ioc, ioc->transport_cmds.smid);
5497                         complete(&ioc->transport_cmds.done);
5498                 }
5499                 if (ioc->base_cmds.status & MPT3_CMD_PENDING) {
5500                         ioc->base_cmds.status |= MPT3_CMD_RESET;
5501                         mpt3sas_base_free_smid(ioc, ioc->base_cmds.smid);
5502                         complete(&ioc->base_cmds.done);
5503                 }
5504                 if (ioc->port_enable_cmds.status & MPT3_CMD_PENDING) {
5505                         ioc->port_enable_failed = 1;
5506                         ioc->port_enable_cmds.status |= MPT3_CMD_RESET;
5507                         mpt3sas_base_free_smid(ioc, ioc->port_enable_cmds.smid);
5508                         if (ioc->is_driver_loading) {
5509                                 ioc->start_scan_failed =
5510                                     MPI2_IOCSTATUS_INTERNAL_ERROR;
5511                                 ioc->start_scan = 0;
5512                                 ioc->port_enable_cmds.status =
5513                                     MPT3_CMD_NOT_USED;
5514                         } else
5515                                 complete(&ioc->port_enable_cmds.done);
5516                 }
5517                 if (ioc->config_cmds.status & MPT3_CMD_PENDING) {
5518                         ioc->config_cmds.status |= MPT3_CMD_RESET;
5519                         mpt3sas_base_free_smid(ioc, ioc->config_cmds.smid);
5520                         ioc->config_cmds.smid = USHRT_MAX;
5521                         complete(&ioc->config_cmds.done);
5522                 }
5523                 break;
5524         case MPT3_IOC_DONE_RESET:
5525                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
5526                         "%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));
5527                 break;
5528         }
5529 }
5530
5531 /**
5532  * _wait_for_commands_to_complete - reset controller
5533  * @ioc: Pointer to MPT_ADAPTER structure
5534  *
5535  * This function waiting(3s) for all pending commands to complete
5536  * prior to putting controller in reset.
5537  */
5538 static void
5539 _wait_for_commands_to_complete(struct MPT3SAS_ADAPTER *ioc)
5540 {
5541         u32 ioc_state;
5542         unsigned long flags;
5543         u16 i;
5544
5545         ioc->pending_io_count = 0;
5546
5547         ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
5548         if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
5549                 return;
5550
5551         /* pending command count */
5552         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
5553         for (i = 0; i < ioc->scsiio_depth; i++)
5554                 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
5555                         ioc->pending_io_count++;
5556         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
5557
5558         if (!ioc->pending_io_count)
5559                 return;
5560
5561         /* wait for pending commands to complete */
5562         wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ);
5563 }
5564
5565 /**
5566  * mpt3sas_base_hard_reset_handler - reset controller
5567  * @ioc: Pointer to MPT_ADAPTER structure
5568  * @type: FORCE_BIG_HAMMER or SOFT_RESET
5569  *
5570  * Returns 0 for success, non-zero for failure.
5571  */
5572 int
5573 mpt3sas_base_hard_reset_handler(struct MPT3SAS_ADAPTER *ioc,
5574         enum reset_type type)
5575 {
5576         int r;
5577         unsigned long flags;
5578         u32 ioc_state;
5579         u8 is_fault = 0, is_trigger = 0;
5580
5581         dtmprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
5582             __func__));
5583
5584         if (ioc->pci_error_recovery) {
5585                 pr_err(MPT3SAS_FMT "%s: pci error recovery reset\n",
5586                     ioc->name, __func__);
5587                 r = 0;
5588                 goto out_unlocked;
5589         }
5590
5591         if (mpt3sas_fwfault_debug)
5592                 mpt3sas_halt_firmware(ioc);
5593
5594         /* wait for an active reset in progress to complete */
5595         if (!mutex_trylock(&ioc->reset_in_progress_mutex)) {
5596                 do {
5597                         ssleep(1);
5598                 } while (ioc->shost_recovery == 1);
5599                 dtmprintk(ioc, pr_info(MPT3SAS_FMT "%s: exit\n", ioc->name,
5600                     __func__));
5601                 return ioc->ioc_reset_in_progress_status;
5602         }
5603
5604         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
5605         ioc->shost_recovery = 1;
5606         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
5607
5608         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
5609             MPT3_DIAG_BUFFER_IS_REGISTERED) &&
5610             (!(ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
5611             MPT3_DIAG_BUFFER_IS_RELEASED))) {
5612                 is_trigger = 1;
5613                 ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
5614                 if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
5615                         is_fault = 1;
5616         }
5617         _base_reset_handler(ioc, MPT3_IOC_PRE_RESET);
5618         _wait_for_commands_to_complete(ioc);
5619         _base_mask_interrupts(ioc);
5620         r = _base_make_ioc_ready(ioc, type);
5621         if (r)
5622                 goto out;
5623         _base_reset_handler(ioc, MPT3_IOC_AFTER_RESET);
5624
5625         /* If this hard reset is called while port enable is active, then
5626          * there is no reason to call make_ioc_operational
5627          */
5628         if (ioc->is_driver_loading && ioc->port_enable_failed) {
5629                 ioc->remove_host = 1;
5630                 r = -EFAULT;
5631                 goto out;
5632         }
5633         r = _base_get_ioc_facts(ioc);
5634         if (r)
5635                 goto out;
5636
5637         if (ioc->rdpq_array_enable && !ioc->rdpq_array_capable)
5638                 panic("%s: Issue occurred with flashing controller firmware."
5639                       "Please reboot the system and ensure that the correct"
5640                       " firmware version is running\n", ioc->name);
5641
5642         r = _base_make_ioc_operational(ioc);
5643         if (!r)
5644                 _base_reset_handler(ioc, MPT3_IOC_DONE_RESET);
5645
5646  out:
5647         dtmprintk(ioc, pr_info(MPT3SAS_FMT "%s: %s\n",
5648             ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
5649
5650         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
5651         ioc->ioc_reset_in_progress_status = r;
5652         ioc->shost_recovery = 0;
5653         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
5654         ioc->ioc_reset_count++;
5655         mutex_unlock(&ioc->reset_in_progress_mutex);
5656
5657  out_unlocked:
5658         if ((r == 0) && is_trigger) {
5659                 if (is_fault)
5660                         mpt3sas_trigger_master(ioc, MASTER_TRIGGER_FW_FAULT);
5661                 else
5662                         mpt3sas_trigger_master(ioc,
5663                             MASTER_TRIGGER_ADAPTER_RESET);
5664         }
5665         dtmprintk(ioc, pr_info(MPT3SAS_FMT "%s: exit\n", ioc->name,
5666             __func__));
5667         return r;
5668 }