drivers/scsi/mpt3sas/mpt3sas_ctl.c

   1 /*
   2  * Management Module Support for MPT (Message Passing Technology) based
   3  * controllers
   4  *
   5  * This code is based on drivers/scsi/mpt3sas/mpt3sas_ctl.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/delay.h>
  54 #include <linux/compat.h>
  55 #include <linux/poll.h>
  56
  57 #include <linux/io.h>
  58 #include <linux/uaccess.h>
  59
  60 #include "mpt3sas_base.h"
  61 #include "mpt3sas_ctl.h"
  62
  63
  64 static struct fasync_struct *async_queue;
  65 static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait);
  66
  67
  68 /**
  69  * enum block_state - blocking state
  70  * @NON_BLOCKING: non blocking
  71  * @BLOCKING: blocking
  72  *
  73  * These states are for ioctls that need to wait for a response
  74  * from firmware, so they probably require sleep.
  75  */
  76 enum block_state {
  77         NON_BLOCKING,
  78         BLOCKING,
  79 };
  80
  81 /**
  82  * _ctl_sas_device_find_by_handle - sas device search
  83  * @ioc: per adapter object
  84  * @handle: sas device handle (assigned by firmware)
  85  * Context: Calling function should acquire ioc->sas_device_lock
  86  *
  87  * This searches for sas_device based on sas_address, then return sas_device
  88  * object.
  89  */
  90 static struct _sas_device *
  91 _ctl_sas_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
  92 {
  93         struct _sas_device *sas_device, *r;
  94
  95         r = NULL;
  96         list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
  97                 if (sas_device->handle != handle)
  98                         continue;
  99                 r = sas_device;
 100                 goto out;
 101         }
 102
 103  out:
 104         return r;
 105 }
 106
 107 /**
 108  * _ctl_display_some_debug - debug routine
 109  * @ioc: per adapter object
 110  * @smid: system request message index
 111  * @calling_function_name: string pass from calling function
 112  * @mpi_reply: reply message frame
 113  * Context: none.
 114  *
 115  * Function for displaying debug info helpful when debugging issues
 116  * in this module.
 117  */
 118 static void
 119 _ctl_display_some_debug(struct MPT3SAS_ADAPTER *ioc, u16 smid,
 120         char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
 121 {
 122         Mpi2ConfigRequest_t *mpi_request;
 123         char *desc = NULL;
 124
 125         if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
 126                 return;
 127
 128         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
 129         switch (mpi_request->Function) {
 130         case MPI2_FUNCTION_SCSI_IO_REQUEST:
 131         {
 132                 Mpi2SCSIIORequest_t *scsi_request =
 133                     (Mpi2SCSIIORequest_t *)mpi_request;
 134
 135                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 136                     "scsi_io, cmd(0x%02x), cdb_len(%d)",
 137                     scsi_request->CDB.CDB32[0],
 138                     le16_to_cpu(scsi_request->IoFlags) & 0xF);
 139                 desc = ioc->tmp_string;
 140                 break;
 141         }
 142         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 143                 desc = "task_mgmt";
 144                 break;
 145         case MPI2_FUNCTION_IOC_INIT:
 146                 desc = "ioc_init";
 147                 break;
 148         case MPI2_FUNCTION_IOC_FACTS:
 149                 desc = "ioc_facts";
 150                 break;
 151         case MPI2_FUNCTION_CONFIG:
 152         {
 153                 Mpi2ConfigRequest_t *config_request =
 154                     (Mpi2ConfigRequest_t *)mpi_request;
 155
 156                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 157                     "config, type(0x%02x), ext_type(0x%02x), number(%d)",
 158                     (config_request->Header.PageType &
 159                      MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
 160                     config_request->Header.PageNumber);
 161                 desc = ioc->tmp_string;
 162                 break;
 163         }
 164         case MPI2_FUNCTION_PORT_FACTS:
 165                 desc = "port_facts";
 166                 break;
 167         case MPI2_FUNCTION_PORT_ENABLE:
 168                 desc = "port_enable";
 169                 break;
 170         case MPI2_FUNCTION_EVENT_NOTIFICATION:
 171                 desc = "event_notification";
 172                 break;
 173         case MPI2_FUNCTION_FW_DOWNLOAD:
 174                 desc = "fw_download";
 175                 break;
 176         case MPI2_FUNCTION_FW_UPLOAD:
 177                 desc = "fw_upload";
 178                 break;
 179         case MPI2_FUNCTION_RAID_ACTION:
 180                 desc = "raid_action";
 181                 break;
 182         case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
 183         {
 184                 Mpi2SCSIIORequest_t *scsi_request =
 185                     (Mpi2SCSIIORequest_t *)mpi_request;
 186
 187                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 188                     "raid_pass, cmd(0x%02x), cdb_len(%d)",
 189                     scsi_request->CDB.CDB32[0],
 190                     le16_to_cpu(scsi_request->IoFlags) & 0xF);
 191                 desc = ioc->tmp_string;
 192                 break;
 193         }
 194         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 195                 desc = "sas_iounit_cntl";
 196                 break;
 197         case MPI2_FUNCTION_SATA_PASSTHROUGH:
 198                 desc = "sata_pass";
 199                 break;
 200         case MPI2_FUNCTION_DIAG_BUFFER_POST:
 201                 desc = "diag_buffer_post";
 202                 break;
 203         case MPI2_FUNCTION_DIAG_RELEASE:
 204                 desc = "diag_release";
 205                 break;
 206         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 207                 desc = "smp_passthrough";
 208                 break;
 209         }
 210
 211         if (!desc)
 212                 return;
 213
 214         pr_info(MPT3SAS_FMT "%s: %s, smid(%d)\n",
 215             ioc->name, calling_function_name, desc, smid);
 216
 217         if (!mpi_reply)
 218                 return;
 219
 220         if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
 221                 pr_info(MPT3SAS_FMT
 222                     "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
 223                     ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
 224                     le32_to_cpu(mpi_reply->IOCLogInfo));
 225
 226         if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 227             mpi_request->Function ==
 228             MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 229                 Mpi2SCSIIOReply_t *scsi_reply =
 230                     (Mpi2SCSIIOReply_t *)mpi_reply;
 231                 struct _sas_device *sas_device = NULL;
 232                 unsigned long flags;
 233
 234                 spin_lock_irqsave(&ioc->sas_device_lock, flags);
 235                 sas_device = _ctl_sas_device_find_by_handle(ioc,
 236                     le16_to_cpu(scsi_reply->DevHandle));
 237                 if (sas_device) {
 238                         pr_warn(MPT3SAS_FMT "\tsas_address(0x%016llx), phy(%d)\n",
 239                                 ioc->name, (unsigned long long)
 240                             sas_device->sas_address, sas_device->phy);
 241                         pr_warn(MPT3SAS_FMT
 242                             "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
 243                             ioc->name, (unsigned long long)
 244                             sas_device->enclosure_logical_id, sas_device->slot);
 245                 }
 246                 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 247                 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
 248                         pr_info(MPT3SAS_FMT
 249                             "\tscsi_state(0x%02x), scsi_status"
 250                             "(0x%02x)\n", ioc->name,
 251                             scsi_reply->SCSIState,
 252                             scsi_reply->SCSIStatus);
 253         }
 254 }
 255
 256 /**
 257  * mpt3sas_ctl_done - ctl module completion routine
 258  * @ioc: per adapter object
 259  * @smid: system request message index
 260  * @msix_index: MSIX table index supplied by the OS
 261  * @reply: reply message frame(lower 32bit addr)
 262  * Context: none.
 263  *
 264  * The callback handler when using ioc->ctl_cb_idx.
 265  *
 266  * Return 1 meaning mf should be freed from _base_interrupt
 267  *        0 means the mf is freed from this function.
 268  */
 269 u8
 270 mpt3sas_ctl_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 271         u32 reply)
 272 {
 273         MPI2DefaultReply_t *mpi_reply;
 274         Mpi2SCSIIOReply_t *scsiio_reply;
 275         const void *sense_data;
 276         u32 sz;
 277
 278         if (ioc->ctl_cmds.status == MPT3_CMD_NOT_USED)
 279                 return 1;
 280         if (ioc->ctl_cmds.smid != smid)
 281                 return 1;
 282         ioc->ctl_cmds.status |= MPT3_CMD_COMPLETE;
 283         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
 284         if (mpi_reply) {
 285                 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 286                 ioc->ctl_cmds.status |= MPT3_CMD_REPLY_VALID;
 287                 /* get sense data */
 288                 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 289                     mpi_reply->Function ==
 290                     MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 291                         scsiio_reply = (Mpi2SCSIIOReply_t *)mpi_reply;
 292                         if (scsiio_reply->SCSIState &
 293                             MPI2_SCSI_STATE_AUTOSENSE_VALID) {
 294                                 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
 295                                     le32_to_cpu(scsiio_reply->SenseCount));
 296                                 sense_data = mpt3sas_base_get_sense_buffer(ioc,
 297                                     smid);
 298                                 memcpy(ioc->ctl_cmds.sense, sense_data, sz);
 299                         }
 300                 }
 301         }
 302         _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
 303         ioc->ctl_cmds.status &= ~MPT3_CMD_PENDING;
 304         complete(&ioc->ctl_cmds.done);
 305         return 1;
 306 }
 307
 308 /**
 309  * _ctl_check_event_type - determines when an event needs logging
 310  * @ioc: per adapter object
 311  * @event: firmware event
 312  *
 313  * The bitmask in ioc->event_type[] indicates which events should be
 314  * be saved in the driver event_log.  This bitmask is set by application.
 315  *
 316  * Returns 1 when event should be captured, or zero means no match.
 317  */
 318 static int
 319 _ctl_check_event_type(struct MPT3SAS_ADAPTER *ioc, u16 event)
 320 {
 321         u16 i;
 322         u32 desired_event;
 323
 324         if (event >= 128 || !event || !ioc->event_log)
 325                 return 0;
 326
 327         desired_event = (1 << (event % 32));
 328         if (!desired_event)
 329                 desired_event = 1;
 330         i = event / 32;
 331         return desired_event & ioc->event_type[i];
 332 }
 333
 334 /**
 335  * mpt3sas_ctl_add_to_event_log - add event
 336  * @ioc: per adapter object
 337  * @mpi_reply: reply message frame
 338  *
 339  * Return nothing.
 340  */
 341 void
 342 mpt3sas_ctl_add_to_event_log(struct MPT3SAS_ADAPTER *ioc,
 343         Mpi2EventNotificationReply_t *mpi_reply)
 344 {
 345         struct MPT3_IOCTL_EVENTS *event_log;
 346         u16 event;
 347         int i;
 348         u32 sz, event_data_sz;
 349         u8 send_aen = 0;
 350
 351         if (!ioc->event_log)
 352                 return;
 353
 354         event = le16_to_cpu(mpi_reply->Event);
 355
 356         if (_ctl_check_event_type(ioc, event)) {
 357
 358                 /* insert entry into circular event_log */
 359                 i = ioc->event_context % MPT3SAS_CTL_EVENT_LOG_SIZE;
 360                 event_log = ioc->event_log;
 361                 event_log[i].event = event;
 362                 event_log[i].context = ioc->event_context++;
 363
 364                 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
 365                 sz = min_t(u32, event_data_sz, MPT3_EVENT_DATA_SIZE);
 366                 memset(event_log[i].data, 0, MPT3_EVENT_DATA_SIZE);
 367                 memcpy(event_log[i].data, mpi_reply->EventData, sz);
 368                 send_aen = 1;
 369         }
 370
 371         /* This aen_event_read_flag flag is set until the
 372          * application has read the event log.
 373          * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
 374          */
 375         if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
 376             (send_aen && !ioc->aen_event_read_flag)) {
 377                 ioc->aen_event_read_flag = 1;
 378                 wake_up_interruptible(&ctl_poll_wait);
 379                 if (async_queue)
 380                         kill_fasync(&async_queue, SIGIO, POLL_IN);
 381         }
 382 }
 383
 384 /**
 385  * mpt3sas_ctl_event_callback - firmware event handler (called at ISR time)
 386  * @ioc: per adapter object
 387  * @msix_index: MSIX table index supplied by the OS
 388  * @reply: reply message frame(lower 32bit addr)
 389  * Context: interrupt.
 390  *
 391  * This function merely adds a new work task into ioc->firmware_event_thread.
 392  * The tasks are worked from _firmware_event_work in user context.
 393  *
 394  * Return 1 meaning mf should be freed from _base_interrupt
 395  *        0 means the mf is freed from this function.
 396  */
 397 u8
 398 mpt3sas_ctl_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
 399         u32 reply)
 400 {
 401         Mpi2EventNotificationReply_t *mpi_reply;
 402
 403         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
 404         if (mpi_reply)
 405                 mpt3sas_ctl_add_to_event_log(ioc, mpi_reply);
 406         return 1;
 407 }
 408
 409 /**
 410  * _ctl_verify_adapter - validates ioc_number passed from application
 411  * @ioc: per adapter object
 412  * @iocpp: The ioc pointer is returned in this.
 413  * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
 414  * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
 415  *
 416  * Return (-1) means error, else ioc_number.
 417  */
 418 static int
 419 _ctl_verify_adapter(int ioc_number, struct MPT3SAS_ADAPTER **iocpp,
 420                                                         int mpi_version)
 421 {
 422         struct MPT3SAS_ADAPTER *ioc;
 423         int version = 0;
 424         /* global ioc lock to protect controller on list operations */
 425         spin_lock(&gioc_lock);
 426         list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
 427                 if (ioc->id != ioc_number)
 428                         continue;
 429                 /* Check whether this ioctl command is from right
 430                  * ioctl device or not, if not continue the search.
 431                  */
 432                 version = ioc->hba_mpi_version_belonged;
 433                 /* MPI25_VERSION and MPI26_VERSION uses same ioctl
 434                  * device.
 435                  */
 436                 if (mpi_version == (MPI25_VERSION | MPI26_VERSION)) {
 437                         if ((version == MPI25_VERSION) ||
 438                                 (version == MPI26_VERSION))
 439                                 goto out;
 440                         else
 441                                 continue;
 442                 } else {
 443                         if (version != mpi_version)
 444                                 continue;
 445                 }
 446 out:
 447                 spin_unlock(&gioc_lock);
 448                 *iocpp = ioc;
 449                 return ioc_number;
 450         }
 451         spin_unlock(&gioc_lock);
 452         *iocpp = NULL;
 453         return -1;
 454 }
 455
 456 /**
 457  * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
 458  * @ioc: per adapter object
 459  * @reset_phase: phase
 460  *
 461  * The handler for doing any required cleanup or initialization.
 462  *
 463  * The reset phase can be MPT3_IOC_PRE_RESET, MPT3_IOC_AFTER_RESET,
 464  * MPT3_IOC_DONE_RESET
 465  */
 466 void
 467 mpt3sas_ctl_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
 468 {
 469         int i;
 470         u8 issue_reset;
 471
 472         switch (reset_phase) {
 473         case MPT3_IOC_PRE_RESET:
 474                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
 475                         "%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
 476                 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
 477                         if (!(ioc->diag_buffer_status[i] &
 478                             MPT3_DIAG_BUFFER_IS_REGISTERED))
 479                                 continue;
 480                         if ((ioc->diag_buffer_status[i] &
 481                             MPT3_DIAG_BUFFER_IS_RELEASED))
 482                                 continue;
 483                         mpt3sas_send_diag_release(ioc, i, &issue_reset);
 484                 }
 485                 break;
 486         case MPT3_IOC_AFTER_RESET:
 487                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
 488                         "%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
 489                 if (ioc->ctl_cmds.status & MPT3_CMD_PENDING) {
 490                         ioc->ctl_cmds.status |= MPT3_CMD_RESET;
 491                         mpt3sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
 492                         complete(&ioc->ctl_cmds.done);
 493                 }
 494                 break;
 495         case MPT3_IOC_DONE_RESET:
 496                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
 497                         "%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));
 498
 499                 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
 500                         if (!(ioc->diag_buffer_status[i] &
 501                             MPT3_DIAG_BUFFER_IS_REGISTERED))
 502                                 continue;
 503                         if ((ioc->diag_buffer_status[i] &
 504                             MPT3_DIAG_BUFFER_IS_RELEASED))
 505                                 continue;
 506                         ioc->diag_buffer_status[i] |=
 507                             MPT3_DIAG_BUFFER_IS_DIAG_RESET;
 508                 }
 509                 break;
 510         }
 511 }
 512
 513 /**
 514  * _ctl_fasync -
 515  * @fd -
 516  * @filep -
 517  * @mode -
 518  *
 519  * Called when application request fasyn callback handler.
 520  */
 521 static int
 522 _ctl_fasync(int fd, struct file *filep, int mode)
 523 {
 524         return fasync_helper(fd, filep, mode, &async_queue);
 525 }
 526
 527 /**
 528  * _ctl_poll -
 529  * @file -
 530  * @wait -
 531  *
 532  */
 533 static unsigned int
 534 _ctl_poll(struct file *filep, poll_table *wait)
 535 {
 536         struct MPT3SAS_ADAPTER *ioc;
 537
 538         poll_wait(filep, &ctl_poll_wait, wait);
 539
 540         /* global ioc lock to protect controller on list operations */
 541         spin_lock(&gioc_lock);
 542         list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
 543                 if (ioc->aen_event_read_flag) {
 544                         spin_unlock(&gioc_lock);
 545                         return POLLIN | POLLRDNORM;
 546                 }
 547         }
 548         spin_unlock(&gioc_lock);
 549         return 0;
 550 }
 551
 552 /**
 553  * _ctl_set_task_mid - assign an active smid to tm request
 554  * @ioc: per adapter object
 555  * @karg - (struct mpt3_ioctl_command)
 556  * @tm_request - pointer to mf from user space
 557  *
 558  * Returns 0 when an smid if found, else fail.
 559  * during failure, the reply frame is filled.
 560  */
 561 static int
 562 _ctl_set_task_mid(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command *karg,
 563         Mpi2SCSITaskManagementRequest_t *tm_request)
 564 {
 565         u8 found = 0;
 566         u16 i;
 567         u16 handle;
 568         struct scsi_cmnd *scmd;
 569         struct MPT3SAS_DEVICE *priv_data;
 570         unsigned long flags;
 571         Mpi2SCSITaskManagementReply_t *tm_reply;
 572         u32 sz;
 573         u32 lun;
 574         char *desc = NULL;
 575
 576         if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
 577                 desc = "abort_task";
 578         else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
 579                 desc = "query_task";
 580         else
 581                 return 0;
 582
 583         lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
 584
 585         handle = le16_to_cpu(tm_request->DevHandle);
 586         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
 587         for (i = ioc->scsiio_depth; i && !found; i--) {
 588                 scmd = ioc->scsi_lookup[i - 1].scmd;
 589                 if (scmd == NULL || scmd->device == NULL ||
 590                     scmd->device->hostdata == NULL)
 591                         continue;
 592                 if (lun != scmd->device->lun)
 593                         continue;
 594                 priv_data = scmd->device->hostdata;
 595                 if (priv_data->sas_target == NULL)
 596                         continue;
 597                 if (priv_data->sas_target->handle != handle)
 598                         continue;
 599                 tm_request->TaskMID = cpu_to_le16(ioc->scsi_lookup[i - 1].smid);
 600                 found = 1;
 601         }
 602         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
 603
 604         if (!found) {
 605                 dctlprintk(ioc, pr_info(MPT3SAS_FMT
 606                         "%s: handle(0x%04x), lun(%d), no active mid!!\n",
 607                         ioc->name,
 608                     desc, le16_to_cpu(tm_request->DevHandle), lun));
 609                 tm_reply = ioc->ctl_cmds.reply;
 610                 tm_reply->DevHandle = tm_request->DevHandle;
 611                 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
 612                 tm_reply->TaskType = tm_request->TaskType;
 613                 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
 614                 tm_reply->VP_ID = tm_request->VP_ID;
 615                 tm_reply->VF_ID = tm_request->VF_ID;
 616                 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
 617                 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
 618                     sz))
 619                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 620                             __LINE__, __func__);
 621                 return 1;
 622         }
 623
 624         dctlprintk(ioc, pr_info(MPT3SAS_FMT
 625                 "%s: handle(0x%04x), lun(%d), task_mid(%d)\n", ioc->name,
 626             desc, le16_to_cpu(tm_request->DevHandle), lun,
 627              le16_to_cpu(tm_request->TaskMID)));
 628         return 0;
 629 }
 630
 631 /**
 632  * _ctl_do_mpt_command - main handler for MPT3COMMAND opcode
 633  * @ioc: per adapter object
 634  * @karg - (struct mpt3_ioctl_command)
 635  * @mf - pointer to mf in user space
 636  */
 637 static long
 638 _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
 639         void __user *mf)
 640 {
 641         MPI2RequestHeader_t *mpi_request = NULL, *request;
 642         MPI2DefaultReply_t *mpi_reply;
 643         u32 ioc_state;
 644         u16 smid;
 645         unsigned long timeout;
 646         u8 issue_reset;
 647         u32 sz;
 648         void *psge;
 649         void *data_out = NULL;
 650         dma_addr_t data_out_dma = 0;
 651         size_t data_out_sz = 0;
 652         void *data_in = NULL;
 653         dma_addr_t data_in_dma = 0;
 654         size_t data_in_sz = 0;
 655         long ret;
 656         u16 wait_state_count;
 657
 658         issue_reset = 0;
 659
 660         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
 661                 pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
 662                     ioc->name, __func__);
 663                 ret = -EAGAIN;
 664                 goto out;
 665         }
 666
 667         wait_state_count = 0;
 668         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
 669         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
 670                 if (wait_state_count++ == 10) {
 671                         pr_err(MPT3SAS_FMT
 672                             "%s: failed due to ioc not operational\n",
 673                             ioc->name, __func__);
 674                         ret = -EFAULT;
 675                         goto out;
 676                 }
 677                 ssleep(1);
 678                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
 679                 pr_info(MPT3SAS_FMT
 680                         "%s: waiting for operational state(count=%d)\n",
 681                         ioc->name,
 682                     __func__, wait_state_count);
 683         }
 684         if (wait_state_count)
 685                 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
 686                     ioc->name, __func__);
 687
 688         mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL);
 689         if (!mpi_request) {
 690                 pr_err(MPT3SAS_FMT
 691                         "%s: failed obtaining a memory for mpi_request\n",
 692                         ioc->name, __func__);
 693                 ret = -ENOMEM;
 694                 goto out;
 695         }
 696
 697         /* Check for overflow and wraparound */
 698         if (karg.data_sge_offset * 4 > ioc->request_sz ||
 699             karg.data_sge_offset > (UINT_MAX / 4)) {
 700                 ret = -EINVAL;
 701                 goto out;
 702         }
 703
 704         /* copy in request message frame from user */
 705         if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
 706                 pr_err("failure at %s:%d/%s()!\n", __FILE__, __LINE__,
 707                     __func__);
 708                 ret = -EFAULT;
 709                 goto out;
 710         }
 711
 712         if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
 713                 smid = mpt3sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx);
 714                 if (!smid) {
 715                         pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
 716                             ioc->name, __func__);
 717                         ret = -EAGAIN;
 718                         goto out;
 719                 }
 720         } else {
 721
 722                 smid = mpt3sas_base_get_smid_scsiio(ioc, ioc->ctl_cb_idx, NULL);
 723                 if (!smid) {
 724                         pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
 725                             ioc->name, __func__);
 726                         ret = -EAGAIN;
 727                         goto out;
 728                 }
 729         }
 730
 731         ret = 0;
 732         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
 733         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
 734         request = mpt3sas_base_get_msg_frame(ioc, smid);
 735         memcpy(request, mpi_request, karg.data_sge_offset*4);
 736         ioc->ctl_cmds.smid = smid;
 737         data_out_sz = karg.data_out_size;
 738         data_in_sz = karg.data_in_size;
 739
 740         if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 741             mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 742                 if (!le16_to_cpu(mpi_request->FunctionDependent1) ||
 743                     le16_to_cpu(mpi_request->FunctionDependent1) >
 744                     ioc->facts.MaxDevHandle) {
 745                         ret = -EINVAL;
 746                         mpt3sas_base_free_smid(ioc, smid);
 747                         goto out;
 748                 }
 749         }
 750
 751         /* obtain dma-able memory for data transfer */
 752         if (data_out_sz) /* WRITE */ {
 753                 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
 754                     &data_out_dma);
 755                 if (!data_out) {
 756                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 757                             __LINE__, __func__);
 758                         ret = -ENOMEM;
 759                         mpt3sas_base_free_smid(ioc, smid);
 760                         goto out;
 761                 }
 762                 if (copy_from_user(data_out, karg.data_out_buf_ptr,
 763                         data_out_sz)) {
 764                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 765                             __LINE__, __func__);
 766                         ret =  -EFAULT;
 767                         mpt3sas_base_free_smid(ioc, smid);
 768                         goto out;
 769                 }
 770         }
 771
 772         if (data_in_sz) /* READ */ {
 773                 data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
 774                     &data_in_dma);
 775                 if (!data_in) {
 776                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 777                             __LINE__, __func__);
 778                         ret = -ENOMEM;
 779                         mpt3sas_base_free_smid(ioc, smid);
 780                         goto out;
 781                 }
 782         }
 783
 784         psge = (void *)request + (karg.data_sge_offset*4);
 785
 786         /* send command to firmware */
 787         _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
 788
 789         init_completion(&ioc->ctl_cmds.done);
 790         switch (mpi_request->Function) {
 791         case MPI2_FUNCTION_SCSI_IO_REQUEST:
 792         case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
 793         {
 794                 Mpi2SCSIIORequest_t *scsiio_request =
 795                     (Mpi2SCSIIORequest_t *)request;
 796                 scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
 797                 scsiio_request->SenseBufferLowAddress =
 798                     mpt3sas_base_get_sense_buffer_dma(ioc, smid);
 799                 memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
 800                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
 801                     data_in_dma, data_in_sz);
 802
 803                 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
 804                         mpt3sas_base_put_smid_scsi_io(ioc, smid,
 805                             le16_to_cpu(mpi_request->FunctionDependent1));
 806                 else
 807                         mpt3sas_base_put_smid_default(ioc, smid);
 808                 break;
 809         }
 810         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 811         {
 812                 Mpi2SCSITaskManagementRequest_t *tm_request =
 813                     (Mpi2SCSITaskManagementRequest_t *)request;
 814
 815                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
 816                         "TASK_MGMT: handle(0x%04x), task_type(0x%02x)\n",
 817                         ioc->name,
 818                     le16_to_cpu(tm_request->DevHandle), tm_request->TaskType));
 819
 820                 if (tm_request->TaskType ==
 821                     MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
 822                     tm_request->TaskType ==
 823                     MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
 824                         if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
 825                                 mpt3sas_base_free_smid(ioc, smid);
 826                                 goto out;
 827                         }
 828                 }
 829
 830                 mpt3sas_scsih_set_tm_flag(ioc, le16_to_cpu(
 831                     tm_request->DevHandle));
 832                 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
 833                     data_in_dma, data_in_sz);
 834                 mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
 835                 break;
 836         }
 837         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 838         {
 839                 Mpi2SmpPassthroughRequest_t *smp_request =
 840                     (Mpi2SmpPassthroughRequest_t *)mpi_request;
 841                 u8 *data;
 842
 843                 /* ioc determines which port to use */
 844                 smp_request->PhysicalPort = 0xFF;
 845                 if (smp_request->PassthroughFlags &
 846                     MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
 847                         data = (u8 *)&smp_request->SGL;
 848                 else {
 849                         if (unlikely(data_out == NULL)) {
 850                                 pr_err("failure at %s:%d/%s()!\n",
 851                                     __FILE__, __LINE__, __func__);
 852                                 mpt3sas_base_free_smid(ioc, smid);
 853                                 ret = -EINVAL;
 854                                 goto out;
 855                         }
 856                         data = data_out;
 857                 }
 858
 859                 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
 860                         ioc->ioc_link_reset_in_progress = 1;
 861                         ioc->ignore_loginfos = 1;
 862                 }
 863                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
 864                     data_in_sz);
 865                 mpt3sas_base_put_smid_default(ioc, smid);
 866                 break;
 867         }
 868         case MPI2_FUNCTION_SATA_PASSTHROUGH:
 869         case MPI2_FUNCTION_FW_DOWNLOAD:
 870         case MPI2_FUNCTION_FW_UPLOAD:
 871         {
 872                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
 873                     data_in_sz);
 874                 mpt3sas_base_put_smid_default(ioc, smid);
 875                 break;
 876         }
 877         case MPI2_FUNCTION_TOOLBOX:
 878         {
 879                 Mpi2ToolboxCleanRequest_t *toolbox_request =
 880                         (Mpi2ToolboxCleanRequest_t *)mpi_request;
 881
 882                 if (toolbox_request->Tool == MPI2_TOOLBOX_DIAGNOSTIC_CLI_TOOL) {
 883                         ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
 884                                 data_in_dma, data_in_sz);
 885                 } else {
 886                         ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
 887                                 data_in_dma, data_in_sz);
 888                 }
 889                 mpt3sas_base_put_smid_default(ioc, smid);
 890                 break;
 891         }
 892         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 893         {
 894                 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
 895                     (Mpi2SasIoUnitControlRequest_t *)mpi_request;
 896
 897                 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
 898                     || sasiounit_request->Operation ==
 899                     MPI2_SAS_OP_PHY_LINK_RESET) {
 900                         ioc->ioc_link_reset_in_progress = 1;
 901                         ioc->ignore_loginfos = 1;
 902                 }
 903                 /* drop to default case for posting the request */
 904         }
 905         default:
 906                 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
 907                     data_in_dma, data_in_sz);
 908                 mpt3sas_base_put_smid_default(ioc, smid);
 909                 break;
 910         }
 911
 912         if (karg.timeout < MPT3_IOCTL_DEFAULT_TIMEOUT)
 913                 timeout = MPT3_IOCTL_DEFAULT_TIMEOUT;
 914         else
 915                 timeout = karg.timeout;
 916         wait_for_completion_timeout(&ioc->ctl_cmds.done, timeout*HZ);
 917         if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
 918                 Mpi2SCSITaskManagementRequest_t *tm_request =
 919                     (Mpi2SCSITaskManagementRequest_t *)mpi_request;
 920                 mpt3sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
 921                     tm_request->DevHandle));
 922                 mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
 923         } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
 924             mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
 925                 ioc->ioc_link_reset_in_progress) {
 926                 ioc->ioc_link_reset_in_progress = 0;
 927                 ioc->ignore_loginfos = 0;
 928         }
 929         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
 930                 pr_err(MPT3SAS_FMT "%s: timeout\n", ioc->name,
 931                     __func__);
 932                 _debug_dump_mf(mpi_request, karg.data_sge_offset);
 933                 if (!(ioc->ctl_cmds.status & MPT3_CMD_RESET))
 934                         issue_reset = 1;
 935                 goto issue_host_reset;
 936         }
 937
 938         mpi_reply = ioc->ctl_cmds.reply;
 939
 940         if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
 941             (ioc->logging_level & MPT_DEBUG_TM)) {
 942                 Mpi2SCSITaskManagementReply_t *tm_reply =
 943                     (Mpi2SCSITaskManagementReply_t *)mpi_reply;
 944
 945                 pr_info(MPT3SAS_FMT "TASK_MGMT: " \
 946                     "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
 947                     "TerminationCount(0x%08x)\n", ioc->name,
 948                     le16_to_cpu(tm_reply->IOCStatus),
 949                     le32_to_cpu(tm_reply->IOCLogInfo),
 950                     le32_to_cpu(tm_reply->TerminationCount));
 951         }
 952
 953         /* copy out xdata to user */
 954         if (data_in_sz) {
 955                 if (copy_to_user(karg.data_in_buf_ptr, data_in,
 956                     data_in_sz)) {
 957                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 958                             __LINE__, __func__);
 959                         ret = -ENODATA;
 960                         goto out;
 961                 }
 962         }
 963
 964         /* copy out reply message frame to user */
 965         if (karg.max_reply_bytes) {
 966                 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
 967                 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
 968                     sz)) {
 969                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 970                             __LINE__, __func__);
 971                         ret = -ENODATA;
 972                         goto out;
 973                 }
 974         }
 975
 976         /* copy out sense to user */
 977         if (karg.max_sense_bytes && (mpi_request->Function ==
 978             MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
 979             MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
 980                 sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
 981                 if (copy_to_user(karg.sense_data_ptr, ioc->ctl_cmds.sense,
 982                     sz)) {
 983                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 984                             __LINE__, __func__);
 985                         ret = -ENODATA;
 986                         goto out;
 987                 }
 988         }
 989
 990  issue_host_reset:
 991         if (issue_reset) {
 992                 ret = -ENODATA;
 993                 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 994                     mpi_request->Function ==
 995                     MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
 996                     mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH)) {
 997                         pr_info(MPT3SAS_FMT "issue target reset: handle = (0x%04x)\n",
 998                                 ioc->name,
 999                                 le16_to_cpu(mpi_request->FunctionDependent1));
1000                         mpt3sas_halt_firmware(ioc);
1001                         mpt3sas_scsih_issue_locked_tm(ioc,
1002                             le16_to_cpu(mpi_request->FunctionDependent1), 0, 0,
1003                             0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 30);
1004                 } else
1005                         mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1006         }
1007
1008  out:
1009
1010         /* free memory associated with sg buffers */
1011         if (data_in)
1012                 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
1013                     data_in_dma);
1014
1015         if (data_out)
1016                 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
1017                     data_out_dma);
1018
1019         kfree(mpi_request);
1020         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1021         return ret;
1022 }
1023
1024 /**
1025  * _ctl_getiocinfo - main handler for MPT3IOCINFO opcode
1026  * @ioc: per adapter object
1027  * @arg - user space buffer containing ioctl content
1028  */
1029 static long
1030 _ctl_getiocinfo(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1031 {
1032         struct mpt3_ioctl_iocinfo karg;
1033
1034         if (copy_from_user(&karg, arg, sizeof(karg))) {
1035                 pr_err("failure at %s:%d/%s()!\n",
1036                     __FILE__, __LINE__, __func__);
1037                 return -EFAULT;
1038         }
1039
1040         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
1041             __func__));
1042
1043         memset(&karg, 0 , sizeof(karg));
1044         if (ioc->pfacts)
1045                 karg.port_number = ioc->pfacts[0].PortNumber;
1046         karg.hw_rev = ioc->pdev->revision;
1047         karg.pci_id = ioc->pdev->device;
1048         karg.subsystem_device = ioc->pdev->subsystem_device;
1049         karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
1050         karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
1051         karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
1052         karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
1053         karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
1054         karg.firmware_version = ioc->facts.FWVersion.Word;
1055         strcpy(karg.driver_version, ioc->driver_name);
1056         strcat(karg.driver_version, "-");
1057         switch  (ioc->hba_mpi_version_belonged) {
1058         case MPI2_VERSION:
1059                 if (ioc->is_warpdrive)
1060                         karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200;
1061                 else
1062                         karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
1063                 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
1064                 break;
1065         case MPI25_VERSION:
1066         case MPI26_VERSION:
1067                 karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS3;
1068                 strcat(karg.driver_version, MPT3SAS_DRIVER_VERSION);
1069                 break;
1070         }
1071         karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
1072
1073         if (copy_to_user(arg, &karg, sizeof(karg))) {
1074                 pr_err("failure at %s:%d/%s()!\n",
1075                     __FILE__, __LINE__, __func__);
1076                 return -EFAULT;
1077         }
1078         return 0;
1079 }
1080
1081 /**
1082  * _ctl_eventquery - main handler for MPT3EVENTQUERY opcode
1083  * @ioc: per adapter object
1084  * @arg - user space buffer containing ioctl content
1085  */
1086 static long
1087 _ctl_eventquery(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1088 {
1089         struct mpt3_ioctl_eventquery karg;
1090
1091         if (copy_from_user(&karg, arg, sizeof(karg))) {
1092                 pr_err("failure at %s:%d/%s()!\n",
1093                     __FILE__, __LINE__, __func__);
1094                 return -EFAULT;
1095         }
1096
1097         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
1098             __func__));
1099
1100         karg.event_entries = MPT3SAS_CTL_EVENT_LOG_SIZE;
1101         memcpy(karg.event_types, ioc->event_type,
1102             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1103
1104         if (copy_to_user(arg, &karg, sizeof(karg))) {
1105                 pr_err("failure at %s:%d/%s()!\n",
1106                     __FILE__, __LINE__, __func__);
1107                 return -EFAULT;
1108         }
1109         return 0;
1110 }
1111
1112 /**
1113  * _ctl_eventenable - main handler for MPT3EVENTENABLE opcode
1114  * @ioc: per adapter object
1115  * @arg - user space buffer containing ioctl content
1116  */
1117 static long
1118 _ctl_eventenable(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1119 {
1120         struct mpt3_ioctl_eventenable karg;
1121
1122         if (copy_from_user(&karg, arg, sizeof(karg))) {
1123                 pr_err("failure at %s:%d/%s()!\n",
1124                     __FILE__, __LINE__, __func__);
1125                 return -EFAULT;
1126         }
1127
1128         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
1129             __func__));
1130
1131         memcpy(ioc->event_type, karg.event_types,
1132             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1133         mpt3sas_base_validate_event_type(ioc, ioc->event_type);
1134
1135         if (ioc->event_log)
1136                 return 0;
1137         /* initialize event_log */
1138         ioc->event_context = 0;
1139         ioc->aen_event_read_flag = 0;
1140         ioc->event_log = kcalloc(MPT3SAS_CTL_EVENT_LOG_SIZE,
1141             sizeof(struct MPT3_IOCTL_EVENTS), GFP_KERNEL);
1142         if (!ioc->event_log) {
1143                 pr_err("failure at %s:%d/%s()!\n",
1144                     __FILE__, __LINE__, __func__);
1145                 return -ENOMEM;
1146         }
1147         return 0;
1148 }
1149
1150 /**
1151  * _ctl_eventreport - main handler for MPT3EVENTREPORT opcode
1152  * @ioc: per adapter object
1153  * @arg - user space buffer containing ioctl content
1154  */
1155 static long
1156 _ctl_eventreport(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1157 {
1158         struct mpt3_ioctl_eventreport karg;
1159         u32 number_bytes, max_events, max;
1160         struct mpt3_ioctl_eventreport __user *uarg = arg;
1161
1162         if (copy_from_user(&karg, arg, sizeof(karg))) {
1163                 pr_err("failure at %s:%d/%s()!\n",
1164                     __FILE__, __LINE__, __func__);
1165                 return -EFAULT;
1166         }
1167
1168         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
1169             __func__));
1170
1171         number_bytes = karg.hdr.max_data_size -
1172             sizeof(struct mpt3_ioctl_header);
1173         max_events = number_bytes/sizeof(struct MPT3_IOCTL_EVENTS);
1174         max = min_t(u32, MPT3SAS_CTL_EVENT_LOG_SIZE, max_events);
1175
1176         /* If fewer than 1 event is requested, there must have
1177          * been some type of error.
1178          */
1179         if (!max || !ioc->event_log)
1180                 return -ENODATA;
1181
1182         number_bytes = max * sizeof(struct MPT3_IOCTL_EVENTS);
1183         if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1184                 pr_err("failure at %s:%d/%s()!\n",
1185                     __FILE__, __LINE__, __func__);
1186                 return -EFAULT;
1187         }
1188
1189         /* reset flag so SIGIO can restart */
1190         ioc->aen_event_read_flag = 0;
1191         return 0;
1192 }
1193
1194 /**
1195  * _ctl_do_reset - main handler for MPT3HARDRESET opcode
1196  * @ioc: per adapter object
1197  * @arg - user space buffer containing ioctl content
1198  */
1199 static long
1200 _ctl_do_reset(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1201 {
1202         struct mpt3_ioctl_diag_reset karg;
1203         int retval;
1204
1205         if (copy_from_user(&karg, arg, sizeof(karg))) {
1206                 pr_err("failure at %s:%d/%s()!\n",
1207                     __FILE__, __LINE__, __func__);
1208                 return -EFAULT;
1209         }
1210
1211         if (ioc->shost_recovery || ioc->pci_error_recovery ||
1212             ioc->is_driver_loading)
1213                 return -EAGAIN;
1214
1215         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
1216             __func__));
1217
1218         retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1219         pr_info(MPT3SAS_FMT "host reset: %s\n",
1220             ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1221         return 0;
1222 }
1223
1224 /**
1225  * _ctl_btdh_search_sas_device - searching for sas device
1226  * @ioc: per adapter object
1227  * @btdh: btdh ioctl payload
1228  */
1229 static int
1230 _ctl_btdh_search_sas_device(struct MPT3SAS_ADAPTER *ioc,
1231         struct mpt3_ioctl_btdh_mapping *btdh)
1232 {
1233         struct _sas_device *sas_device;
1234         unsigned long flags;
1235         int rc = 0;
1236
1237         if (list_empty(&ioc->sas_device_list))
1238                 return rc;
1239
1240         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1241         list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1242                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1243                     btdh->handle == sas_device->handle) {
1244                         btdh->bus = sas_device->channel;
1245                         btdh->id = sas_device->id;
1246                         rc = 1;
1247                         goto out;
1248                 } else if (btdh->bus == sas_device->channel && btdh->id ==
1249                     sas_device->id && btdh->handle == 0xFFFF) {
1250                         btdh->handle = sas_device->handle;
1251                         rc = 1;
1252                         goto out;
1253                 }
1254         }
1255  out:
1256         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1257         return rc;
1258 }
1259
1260 /**
1261  * _ctl_btdh_search_raid_device - searching for raid device
1262  * @ioc: per adapter object
1263  * @btdh: btdh ioctl payload
1264  */
1265 static int
1266 _ctl_btdh_search_raid_device(struct MPT3SAS_ADAPTER *ioc,
1267         struct mpt3_ioctl_btdh_mapping *btdh)
1268 {
1269         struct _raid_device *raid_device;
1270         unsigned long flags;
1271         int rc = 0;
1272
1273         if (list_empty(&ioc->raid_device_list))
1274                 return rc;
1275
1276         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1277         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1278                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1279                     btdh->handle == raid_device->handle) {
1280                         btdh->bus = raid_device->channel;
1281                         btdh->id = raid_device->id;
1282                         rc = 1;
1283                         goto out;
1284                 } else if (btdh->bus == raid_device->channel && btdh->id ==
1285                     raid_device->id && btdh->handle == 0xFFFF) {
1286                         btdh->handle = raid_device->handle;
1287                         rc = 1;
1288                         goto out;
1289                 }
1290         }
1291  out:
1292         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1293         return rc;
1294 }
1295
1296 /**
1297  * _ctl_btdh_mapping - main handler for MPT3BTDHMAPPING opcode
1298  * @ioc: per adapter object
1299  * @arg - user space buffer containing ioctl content
1300  */
1301 static long
1302 _ctl_btdh_mapping(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1303 {
1304         struct mpt3_ioctl_btdh_mapping karg;
1305         int rc;
1306
1307         if (copy_from_user(&karg, arg, sizeof(karg))) {
1308                 pr_err("failure at %s:%d/%s()!\n",
1309                     __FILE__, __LINE__, __func__);
1310                 return -EFAULT;
1311         }
1312
1313         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1314             __func__));
1315
1316         rc = _ctl_btdh_search_sas_device(ioc, &karg);
1317         if (!rc)
1318                 _ctl_btdh_search_raid_device(ioc, &karg);
1319
1320         if (copy_to_user(arg, &karg, sizeof(karg))) {
1321                 pr_err("failure at %s:%d/%s()!\n",
1322                     __FILE__, __LINE__, __func__);
1323                 return -EFAULT;
1324         }
1325         return 0;
1326 }
1327
1328 /**
1329  * _ctl_diag_capability - return diag buffer capability
1330  * @ioc: per adapter object
1331  * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1332  *
1333  * returns 1 when diag buffer support is enabled in firmware
1334  */
1335 static u8
1336 _ctl_diag_capability(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type)
1337 {
1338         u8 rc = 0;
1339
1340         switch (buffer_type) {
1341         case MPI2_DIAG_BUF_TYPE_TRACE:
1342                 if (ioc->facts.IOCCapabilities &
1343                     MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1344                         rc = 1;
1345                 break;
1346         case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1347                 if (ioc->facts.IOCCapabilities &
1348                     MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1349                         rc = 1;
1350                 break;
1351         case MPI2_DIAG_BUF_TYPE_EXTENDED:
1352                 if (ioc->facts.IOCCapabilities &
1353                     MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
1354                         rc = 1;
1355         }
1356
1357         return rc;
1358 }
1359
1360
1361 /**
1362  * _ctl_diag_register_2 - wrapper for registering diag buffer support
1363  * @ioc: per adapter object
1364  * @diag_register: the diag_register struct passed in from user space
1365  *
1366  */
1367 static long
1368 _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc,
1369         struct mpt3_diag_register *diag_register)
1370 {
1371         int rc, i;
1372         void *request_data = NULL;
1373         dma_addr_t request_data_dma;
1374         u32 request_data_sz = 0;
1375         Mpi2DiagBufferPostRequest_t *mpi_request;
1376         Mpi2DiagBufferPostReply_t *mpi_reply;
1377         u8 buffer_type;
1378         u16 smid;
1379         u16 ioc_status;
1380         u32 ioc_state;
1381         u8 issue_reset = 0;
1382
1383         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1384             __func__));
1385
1386         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1387         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1388                 pr_err(MPT3SAS_FMT
1389                     "%s: failed due to ioc not operational\n",
1390                     ioc->name, __func__);
1391                 rc = -EAGAIN;
1392                 goto out;
1393         }
1394
1395         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
1396                 pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
1397                     ioc->name, __func__);
1398                 rc = -EAGAIN;
1399                 goto out;
1400         }
1401
1402         buffer_type = diag_register->buffer_type;
1403         if (!_ctl_diag_capability(ioc, buffer_type)) {
1404                 pr_err(MPT3SAS_FMT
1405                         "%s: doesn't have capability for buffer_type(0x%02x)\n",
1406                         ioc->name, __func__, buffer_type);
1407                 return -EPERM;
1408         }
1409
1410         if (ioc->diag_buffer_status[buffer_type] &
1411             MPT3_DIAG_BUFFER_IS_REGISTERED) {
1412                 pr_err(MPT3SAS_FMT
1413                         "%s: already has a registered buffer for buffer_type(0x%02x)\n",
1414                         ioc->name, __func__,
1415                     buffer_type);
1416                 return -EINVAL;
1417         }
1418
1419         if (diag_register->requested_buffer_size % 4)  {
1420                 pr_err(MPT3SAS_FMT
1421                         "%s: the requested_buffer_size is not 4 byte aligned\n",
1422                         ioc->name, __func__);
1423                 return -EINVAL;
1424         }
1425
1426         smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1427         if (!smid) {
1428                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1429                     ioc->name, __func__);
1430                 rc = -EAGAIN;
1431                 goto out;
1432         }
1433
1434         rc = 0;
1435         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
1436         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1437         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1438         ioc->ctl_cmds.smid = smid;
1439
1440         request_data = ioc->diag_buffer[buffer_type];
1441         request_data_sz = diag_register->requested_buffer_size;
1442         ioc->unique_id[buffer_type] = diag_register->unique_id;
1443         ioc->diag_buffer_status[buffer_type] = 0;
1444         memcpy(ioc->product_specific[buffer_type],
1445             diag_register->product_specific, MPT3_PRODUCT_SPECIFIC_DWORDS);
1446         ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
1447
1448         if (request_data) {
1449                 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1450                 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1451                         pci_free_consistent(ioc->pdev,
1452                             ioc->diag_buffer_sz[buffer_type],
1453                             request_data, request_data_dma);
1454                         request_data = NULL;
1455                 }
1456         }
1457
1458         if (request_data == NULL) {
1459                 ioc->diag_buffer_sz[buffer_type] = 0;
1460                 ioc->diag_buffer_dma[buffer_type] = 0;
1461                 request_data = pci_alloc_consistent(
1462                         ioc->pdev, request_data_sz, &request_data_dma);
1463                 if (request_data == NULL) {
1464                         pr_err(MPT3SAS_FMT "%s: failed allocating memory" \
1465                             " for diag buffers, requested size(%d)\n",
1466                             ioc->name, __func__, request_data_sz);
1467                         mpt3sas_base_free_smid(ioc, smid);
1468                         return -ENOMEM;
1469                 }
1470                 ioc->diag_buffer[buffer_type] = request_data;
1471                 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1472                 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1473         }
1474
1475         mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1476         mpi_request->BufferType = diag_register->buffer_type;
1477         mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
1478         mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1479         mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1480         mpi_request->VF_ID = 0; /* TODO */
1481         mpi_request->VP_ID = 0;
1482
1483         dctlprintk(ioc, pr_info(MPT3SAS_FMT
1484                 "%s: diag_buffer(0x%p), dma(0x%llx), sz(%d)\n",
1485                 ioc->name, __func__, request_data,
1486             (unsigned long long)request_data_dma,
1487             le32_to_cpu(mpi_request->BufferLength)));
1488
1489         for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
1490                 mpi_request->ProductSpecific[i] =
1491                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
1492
1493         init_completion(&ioc->ctl_cmds.done);
1494         mpt3sas_base_put_smid_default(ioc, smid);
1495         wait_for_completion_timeout(&ioc->ctl_cmds.done,
1496             MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
1497
1498         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
1499                 pr_err(MPT3SAS_FMT "%s: timeout\n", ioc->name,
1500                     __func__);
1501                 _debug_dump_mf(mpi_request,
1502                     sizeof(Mpi2DiagBufferPostRequest_t)/4);
1503                 if (!(ioc->ctl_cmds.status & MPT3_CMD_RESET))
1504                         issue_reset = 1;
1505                 goto issue_host_reset;
1506         }
1507
1508         /* process the completed Reply Message Frame */
1509         if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
1510                 pr_err(MPT3SAS_FMT "%s: no reply message\n",
1511                     ioc->name, __func__);
1512                 rc = -EFAULT;
1513                 goto out;
1514         }
1515
1516         mpi_reply = ioc->ctl_cmds.reply;
1517         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1518
1519         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1520                 ioc->diag_buffer_status[buffer_type] |=
1521                         MPT3_DIAG_BUFFER_IS_REGISTERED;
1522                 dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: success\n",
1523                     ioc->name, __func__));
1524         } else {
1525                 pr_info(MPT3SAS_FMT
1526                         "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
1527                         ioc->name, __func__,
1528                     ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1529                 rc = -EFAULT;
1530         }
1531
1532  issue_host_reset:
1533         if (issue_reset)
1534                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1535
1536  out:
1537
1538         if (rc && request_data)
1539                 pci_free_consistent(ioc->pdev, request_data_sz,
1540                     request_data, request_data_dma);
1541
1542         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1543         return rc;
1544 }
1545
1546 /**
1547  * mpt3sas_enable_diag_buffer - enabling diag_buffers support driver load time
1548  * @ioc: per adapter object
1549  * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
1550  *
1551  * This is called when command line option diag_buffer_enable is enabled
1552  * at driver load time.
1553  */
1554 void
1555 mpt3sas_enable_diag_buffer(struct MPT3SAS_ADAPTER *ioc, u8 bits_to_register)
1556 {
1557         struct mpt3_diag_register diag_register;
1558
1559         memset(&diag_register, 0, sizeof(struct mpt3_diag_register));
1560
1561         if (bits_to_register & 1) {
1562                 pr_info(MPT3SAS_FMT "registering trace buffer support\n",
1563                     ioc->name);
1564                 ioc->diag_trigger_master.MasterData =
1565                     (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET);
1566                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
1567                 /* register for 2MB buffers  */
1568                 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1569                 diag_register.unique_id = 0x7075900;
1570                 _ctl_diag_register_2(ioc,  &diag_register);
1571         }
1572
1573         if (bits_to_register & 2) {
1574                 pr_info(MPT3SAS_FMT "registering snapshot buffer support\n",
1575                     ioc->name);
1576                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
1577                 /* register for 2MB buffers  */
1578                 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1579                 diag_register.unique_id = 0x7075901;
1580                 _ctl_diag_register_2(ioc,  &diag_register);
1581         }
1582
1583         if (bits_to_register & 4) {
1584                 pr_info(MPT3SAS_FMT "registering extended buffer support\n",
1585                     ioc->name);
1586                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
1587                 /* register for 2MB buffers  */
1588                 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1589                 diag_register.unique_id = 0x7075901;
1590                 _ctl_diag_register_2(ioc,  &diag_register);
1591         }
1592 }
1593
1594 /**
1595  * _ctl_diag_register - application register with driver
1596  * @ioc: per adapter object
1597  * @arg - user space buffer containing ioctl content
1598  *
1599  * This will allow the driver to setup any required buffers that will be
1600  * needed by firmware to communicate with the driver.
1601  */
1602 static long
1603 _ctl_diag_register(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1604 {
1605         struct mpt3_diag_register karg;
1606         long rc;
1607
1608         if (copy_from_user(&karg, arg, sizeof(karg))) {
1609                 pr_err("failure at %s:%d/%s()!\n",
1610                     __FILE__, __LINE__, __func__);
1611                 return -EFAULT;
1612         }
1613
1614         rc = _ctl_diag_register_2(ioc, &karg);
1615         return rc;
1616 }
1617
1618 /**
1619  * _ctl_diag_unregister - application unregister with driver
1620  * @ioc: per adapter object
1621  * @arg - user space buffer containing ioctl content
1622  *
1623  * This will allow the driver to cleanup any memory allocated for diag
1624  * messages and to free up any resources.
1625  */
1626 static long
1627 _ctl_diag_unregister(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1628 {
1629         struct mpt3_diag_unregister karg;
1630         void *request_data;
1631         dma_addr_t request_data_dma;
1632         u32 request_data_sz;
1633         u8 buffer_type;
1634
1635         if (copy_from_user(&karg, arg, sizeof(karg))) {
1636                 pr_err("failure at %s:%d/%s()!\n",
1637                     __FILE__, __LINE__, __func__);
1638                 return -EFAULT;
1639         }
1640
1641         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1642             __func__));
1643
1644         buffer_type = karg.unique_id & 0x000000ff;
1645         if (!_ctl_diag_capability(ioc, buffer_type)) {
1646                 pr_err(MPT3SAS_FMT
1647                         "%s: doesn't have capability for buffer_type(0x%02x)\n",
1648                         ioc->name, __func__, buffer_type);
1649                 return -EPERM;
1650         }
1651
1652         if ((ioc->diag_buffer_status[buffer_type] &
1653             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1654                 pr_err(MPT3SAS_FMT
1655                         "%s: buffer_type(0x%02x) is not registered\n",
1656                         ioc->name, __func__, buffer_type);
1657                 return -EINVAL;
1658         }
1659         if ((ioc->diag_buffer_status[buffer_type] &
1660             MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
1661                 pr_err(MPT3SAS_FMT
1662                         "%s: buffer_type(0x%02x) has not been released\n",
1663                         ioc->name, __func__, buffer_type);
1664                 return -EINVAL;
1665         }
1666
1667         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1668                 pr_err(MPT3SAS_FMT
1669                         "%s: unique_id(0x%08x) is not registered\n",
1670                         ioc->name, __func__, karg.unique_id);
1671                 return -EINVAL;
1672         }
1673
1674         request_data = ioc->diag_buffer[buffer_type];
1675         if (!request_data) {
1676                 pr_err(MPT3SAS_FMT
1677                         "%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
1678                         ioc->name, __func__, buffer_type);
1679                 return -ENOMEM;
1680         }
1681
1682         request_data_sz = ioc->diag_buffer_sz[buffer_type];
1683         request_data_dma = ioc->diag_buffer_dma[buffer_type];
1684         pci_free_consistent(ioc->pdev, request_data_sz,
1685             request_data, request_data_dma);
1686         ioc->diag_buffer[buffer_type] = NULL;
1687         ioc->diag_buffer_status[buffer_type] = 0;
1688         return 0;
1689 }
1690
1691 /**
1692  * _ctl_diag_query - query relevant info associated with diag buffers
1693  * @ioc: per adapter object
1694  * @arg - user space buffer containing ioctl content
1695  *
1696  * The application will send only buffer_type and unique_id.  Driver will
1697  * inspect unique_id first, if valid, fill in all the info.  If unique_id is
1698  * 0x00, the driver will return info specified by Buffer Type.
1699  */
1700 static long
1701 _ctl_diag_query(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1702 {
1703         struct mpt3_diag_query karg;
1704         void *request_data;
1705         int i;
1706         u8 buffer_type;
1707
1708         if (copy_from_user(&karg, arg, sizeof(karg))) {
1709                 pr_err("failure at %s:%d/%s()!\n",
1710                     __FILE__, __LINE__, __func__);
1711                 return -EFAULT;
1712         }
1713
1714         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1715             __func__));
1716
1717         karg.application_flags = 0;
1718         buffer_type = karg.buffer_type;
1719
1720         if (!_ctl_diag_capability(ioc, buffer_type)) {
1721                 pr_err(MPT3SAS_FMT
1722                         "%s: doesn't have capability for buffer_type(0x%02x)\n",
1723                         ioc->name, __func__, buffer_type);
1724                 return -EPERM;
1725         }
1726
1727         if ((ioc->diag_buffer_status[buffer_type] &
1728             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1729                 pr_err(MPT3SAS_FMT
1730                         "%s: buffer_type(0x%02x) is not registered\n",
1731                         ioc->name, __func__, buffer_type);
1732                 return -EINVAL;
1733         }
1734
1735         if (karg.unique_id & 0xffffff00) {
1736                 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1737                         pr_err(MPT3SAS_FMT
1738                                 "%s: unique_id(0x%08x) is not registered\n",
1739                                 ioc->name, __func__, karg.unique_id);
1740                         return -EINVAL;
1741                 }
1742         }
1743
1744         request_data = ioc->diag_buffer[buffer_type];
1745         if (!request_data) {
1746                 pr_err(MPT3SAS_FMT
1747                         "%s: doesn't have buffer for buffer_type(0x%02x)\n",
1748                         ioc->name, __func__, buffer_type);
1749                 return -ENOMEM;
1750         }
1751
1752         if (ioc->diag_buffer_status[buffer_type] & MPT3_DIAG_BUFFER_IS_RELEASED)
1753                 karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED |
1754                     MPT3_APP_FLAGS_BUFFER_VALID);
1755         else
1756                 karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED |
1757                     MPT3_APP_FLAGS_BUFFER_VALID |
1758                     MPT3_APP_FLAGS_FW_BUFFER_ACCESS);
1759
1760         for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
1761                 karg.product_specific[i] =
1762                     ioc->product_specific[buffer_type][i];
1763
1764         karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1765         karg.driver_added_buffer_size = 0;
1766         karg.unique_id = ioc->unique_id[buffer_type];
1767         karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1768
1769         if (copy_to_user(arg, &karg, sizeof(struct mpt3_diag_query))) {
1770                 pr_err(MPT3SAS_FMT
1771                         "%s: unable to write mpt3_diag_query data @ %p\n",
1772                         ioc->name, __func__, arg);
1773                 return -EFAULT;
1774         }
1775         return 0;
1776 }
1777
1778 /**
1779  * mpt3sas_send_diag_release - Diag Release Message
1780  * @ioc: per adapter object
1781  * @buffer_type - specifies either TRACE, SNAPSHOT, or EXTENDED
1782  * @issue_reset - specifies whether host reset is required.
1783  *
1784  */
1785 int
1786 mpt3sas_send_diag_release(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type,
1787         u8 *issue_reset)
1788 {
1789         Mpi2DiagReleaseRequest_t *mpi_request;
1790         Mpi2DiagReleaseReply_t *mpi_reply;
1791         u16 smid;
1792         u16 ioc_status;
1793         u32 ioc_state;
1794         int rc;
1795
1796         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1797             __func__));
1798
1799         rc = 0;
1800         *issue_reset = 0;
1801
1802         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1803         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1804                 if (ioc->diag_buffer_status[buffer_type] &
1805                     MPT3_DIAG_BUFFER_IS_REGISTERED)
1806                         ioc->diag_buffer_status[buffer_type] |=
1807                             MPT3_DIAG_BUFFER_IS_RELEASED;
1808                 dctlprintk(ioc, pr_info(MPT3SAS_FMT
1809                         "%s: skipping due to FAULT state\n", ioc->name,
1810                     __func__));
1811                 rc = -EAGAIN;
1812                 goto out;
1813         }
1814
1815         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
1816                 pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
1817                     ioc->name, __func__);
1818                 rc = -EAGAIN;
1819                 goto out;
1820         }
1821
1822         smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1823         if (!smid) {
1824                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1825                     ioc->name, __func__);
1826                 rc = -EAGAIN;
1827                 goto out;
1828         }
1829
1830         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
1831         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1832         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1833         ioc->ctl_cmds.smid = smid;
1834
1835         mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1836         mpi_request->BufferType = buffer_type;
1837         mpi_request->VF_ID = 0; /* TODO */
1838         mpi_request->VP_ID = 0;
1839
1840         init_completion(&ioc->ctl_cmds.done);
1841         mpt3sas_base_put_smid_default(ioc, smid);
1842         wait_for_completion_timeout(&ioc->ctl_cmds.done,
1843             MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
1844
1845         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
1846                 pr_err(MPT3SAS_FMT "%s: timeout\n", ioc->name,
1847                     __func__);
1848                 _debug_dump_mf(mpi_request,
1849                     sizeof(Mpi2DiagReleaseRequest_t)/4);
1850                 if (!(ioc->ctl_cmds.status & MPT3_CMD_RESET))
1851                         *issue_reset = 1;
1852                 rc = -EFAULT;
1853                 goto out;
1854         }
1855
1856         /* process the completed Reply Message Frame */
1857         if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
1858                 pr_err(MPT3SAS_FMT "%s: no reply message\n",
1859                     ioc->name, __func__);
1860                 rc = -EFAULT;
1861                 goto out;
1862         }
1863
1864         mpi_reply = ioc->ctl_cmds.reply;
1865         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1866
1867         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1868                 ioc->diag_buffer_status[buffer_type] |=
1869                     MPT3_DIAG_BUFFER_IS_RELEASED;
1870                 dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: success\n",
1871                     ioc->name, __func__));
1872         } else {
1873                 pr_info(MPT3SAS_FMT
1874                         "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
1875                         ioc->name, __func__,
1876                     ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1877                 rc = -EFAULT;
1878         }
1879
1880  out:
1881         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1882         return rc;
1883 }
1884
1885 /**
1886  * _ctl_diag_release - request to send Diag Release Message to firmware
1887  * @arg - user space buffer containing ioctl content
1888  *
1889  * This allows ownership of the specified buffer to returned to the driver,
1890  * allowing an application to read the buffer without fear that firmware is
1891  * overwritting information in the buffer.
1892  */
1893 static long
1894 _ctl_diag_release(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1895 {
1896         struct mpt3_diag_release karg;
1897         void *request_data;
1898         int rc;
1899         u8 buffer_type;
1900         u8 issue_reset = 0;
1901
1902         if (copy_from_user(&karg, arg, sizeof(karg))) {
1903                 pr_err("failure at %s:%d/%s()!\n",
1904                     __FILE__, __LINE__, __func__);
1905                 return -EFAULT;
1906         }
1907
1908         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1909             __func__));
1910
1911         buffer_type = karg.unique_id & 0x000000ff;
1912         if (!_ctl_diag_capability(ioc, buffer_type)) {
1913                 pr_err(MPT3SAS_FMT
1914                         "%s: doesn't have capability for buffer_type(0x%02x)\n",
1915                         ioc->name, __func__, buffer_type);
1916                 return -EPERM;
1917         }
1918
1919         if ((ioc->diag_buffer_status[buffer_type] &
1920             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1921                 pr_err(MPT3SAS_FMT
1922                         "%s: buffer_type(0x%02x) is not registered\n",
1923                         ioc->name, __func__, buffer_type);
1924                 return -EINVAL;
1925         }
1926
1927         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1928                 pr_err(MPT3SAS_FMT
1929                         "%s: unique_id(0x%08x) is not registered\n",
1930                         ioc->name, __func__, karg.unique_id);
1931                 return -EINVAL;
1932         }
1933
1934         if (ioc->diag_buffer_status[buffer_type] &
1935             MPT3_DIAG_BUFFER_IS_RELEASED) {
1936                 pr_err(MPT3SAS_FMT
1937                         "%s: buffer_type(0x%02x) is already released\n",
1938                         ioc->name, __func__,
1939                     buffer_type);
1940                 return 0;
1941         }
1942
1943         request_data = ioc->diag_buffer[buffer_type];
1944
1945         if (!request_data) {
1946                 pr_err(MPT3SAS_FMT
1947                         "%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
1948                         ioc->name, __func__, buffer_type);
1949                 return -ENOMEM;
1950         }
1951
1952         /* buffers were released by due to host reset */
1953         if ((ioc->diag_buffer_status[buffer_type] &
1954             MPT3_DIAG_BUFFER_IS_DIAG_RESET)) {
1955                 ioc->diag_buffer_status[buffer_type] |=
1956                     MPT3_DIAG_BUFFER_IS_RELEASED;
1957                 ioc->diag_buffer_status[buffer_type] &=
1958                     ~MPT3_DIAG_BUFFER_IS_DIAG_RESET;
1959                 pr_err(MPT3SAS_FMT
1960                         "%s: buffer_type(0x%02x) was released due to host reset\n",
1961                         ioc->name, __func__, buffer_type);
1962                 return 0;
1963         }
1964
1965         rc = mpt3sas_send_diag_release(ioc, buffer_type, &issue_reset);
1966
1967         if (issue_reset)
1968                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1969
1970         return rc;
1971 }
1972
1973 /**
1974  * _ctl_diag_read_buffer - request for copy of the diag buffer
1975  * @ioc: per adapter object
1976  * @arg - user space buffer containing ioctl content
1977  */
1978 static long
1979 _ctl_diag_read_buffer(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1980 {
1981         struct mpt3_diag_read_buffer karg;
1982         struct mpt3_diag_read_buffer __user *uarg = arg;
1983         void *request_data, *diag_data;
1984         Mpi2DiagBufferPostRequest_t *mpi_request;
1985         Mpi2DiagBufferPostReply_t *mpi_reply;
1986         int rc, i;
1987         u8 buffer_type;
1988         unsigned long request_size, copy_size;
1989         u16 smid;
1990         u16 ioc_status;
1991         u8 issue_reset = 0;
1992
1993         if (copy_from_user(&karg, arg, sizeof(karg))) {
1994                 pr_err("failure at %s:%d/%s()!\n",
1995                     __FILE__, __LINE__, __func__);
1996                 return -EFAULT;
1997         }
1998
1999         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2000             __func__));
2001
2002         buffer_type = karg.unique_id & 0x000000ff;
2003         if (!_ctl_diag_capability(ioc, buffer_type)) {
2004                 pr_err(MPT3SAS_FMT
2005                         "%s: doesn't have capability for buffer_type(0x%02x)\n",
2006                         ioc->name, __func__, buffer_type);
2007                 return -EPERM;
2008         }
2009
2010         if (karg.unique_id != ioc->unique_id[buffer_type]) {
2011                 pr_err(MPT3SAS_FMT
2012                         "%s: unique_id(0x%08x) is not registered\n",
2013                         ioc->name, __func__, karg.unique_id);
2014                 return -EINVAL;
2015         }
2016
2017         request_data = ioc->diag_buffer[buffer_type];
2018         if (!request_data) {
2019                 pr_err(MPT3SAS_FMT
2020                         "%s: doesn't have buffer for buffer_type(0x%02x)\n",
2021                         ioc->name, __func__, buffer_type);
2022                 return -ENOMEM;
2023         }
2024
2025         request_size = ioc->diag_buffer_sz[buffer_type];
2026
2027         if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
2028                 pr_err(MPT3SAS_FMT "%s: either the starting_offset " \
2029                     "or bytes_to_read are not 4 byte aligned\n", ioc->name,
2030                     __func__);
2031                 return -EINVAL;
2032         }
2033
2034         if (karg.starting_offset > request_size)
2035                 return -EINVAL;
2036
2037         diag_data = (void *)(request_data + karg.starting_offset);
2038         dctlprintk(ioc, pr_info(MPT3SAS_FMT
2039                 "%s: diag_buffer(%p), offset(%d), sz(%d)\n",
2040                 ioc->name, __func__,
2041             diag_data, karg.starting_offset, karg.bytes_to_read));
2042
2043         /* Truncate data on requests that are too large */
2044         if ((diag_data + karg.bytes_to_read < diag_data) ||
2045             (diag_data + karg.bytes_to_read > request_data + request_size))
2046                 copy_size = request_size - karg.starting_offset;
2047         else
2048                 copy_size = karg.bytes_to_read;
2049
2050         if (copy_to_user((void __user *)uarg->diagnostic_data,
2051             diag_data, copy_size)) {
2052                 pr_err(MPT3SAS_FMT
2053                         "%s: Unable to write mpt_diag_read_buffer_t data @ %p\n",
2054                         ioc->name, __func__, diag_data);
2055                 return -EFAULT;
2056         }
2057
2058         if ((karg.flags & MPT3_FLAGS_REREGISTER) == 0)
2059                 return 0;
2060
2061         dctlprintk(ioc, pr_info(MPT3SAS_FMT
2062                 "%s: Reregister buffer_type(0x%02x)\n",
2063                 ioc->name, __func__, buffer_type));
2064         if ((ioc->diag_buffer_status[buffer_type] &
2065             MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
2066                 dctlprintk(ioc, pr_info(MPT3SAS_FMT
2067                         "%s: buffer_type(0x%02x) is still registered\n",
2068                         ioc->name, __func__, buffer_type));
2069                 return 0;
2070         }
2071         /* Get a free request frame and save the message context.
2072         */
2073
2074         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
2075                 pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
2076                     ioc->name, __func__);
2077                 rc = -EAGAIN;
2078                 goto out;
2079         }
2080
2081         smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
2082         if (!smid) {
2083                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
2084                     ioc->name, __func__);
2085                 rc = -EAGAIN;
2086                 goto out;
2087         }
2088
2089         rc = 0;
2090         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
2091         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
2092         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2093         ioc->ctl_cmds.smid = smid;
2094
2095         mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
2096         mpi_request->BufferType = buffer_type;
2097         mpi_request->BufferLength =
2098             cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
2099         mpi_request->BufferAddress =
2100             cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
2101         for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
2102                 mpi_request->ProductSpecific[i] =
2103                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
2104         mpi_request->VF_ID = 0; /* TODO */
2105         mpi_request->VP_ID = 0;
2106
2107         init_completion(&ioc->ctl_cmds.done);
2108         mpt3sas_base_put_smid_default(ioc, smid);
2109         wait_for_completion_timeout(&ioc->ctl_cmds.done,
2110             MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
2111
2112         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
2113                 pr_err(MPT3SAS_FMT "%s: timeout\n", ioc->name,
2114                     __func__);
2115                 _debug_dump_mf(mpi_request,
2116                     sizeof(Mpi2DiagBufferPostRequest_t)/4);
2117                 if (!(ioc->ctl_cmds.status & MPT3_CMD_RESET))
2118                         issue_reset = 1;
2119                 goto issue_host_reset;
2120         }
2121
2122         /* process the completed Reply Message Frame */
2123         if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
2124                 pr_err(MPT3SAS_FMT "%s: no reply message\n",
2125                     ioc->name, __func__);
2126                 rc = -EFAULT;
2127                 goto out;
2128         }
2129
2130         mpi_reply = ioc->ctl_cmds.reply;
2131         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
2132
2133         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
2134                 ioc->diag_buffer_status[buffer_type] |=
2135                     MPT3_DIAG_BUFFER_IS_REGISTERED;
2136                 dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: success\n",
2137                     ioc->name, __func__));
2138         } else {
2139                 pr_info(MPT3SAS_FMT
2140                         "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
2141                         ioc->name, __func__,
2142                     ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
2143                 rc = -EFAULT;
2144         }
2145
2146  issue_host_reset:
2147         if (issue_reset)
2148                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2149
2150  out:
2151
2152         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
2153         return rc;
2154 }
2155
2156
2157
2158 #ifdef CONFIG_COMPAT
2159 /**
2160  * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2161  * @ioc: per adapter object
2162  * @cmd - ioctl opcode
2163  * @arg - (struct mpt3_ioctl_command32)
2164  *
2165  * MPT3COMMAND32 - Handle 32bit applications running on 64bit os.
2166  */
2167 static long
2168 _ctl_compat_mpt_command(struct MPT3SAS_ADAPTER *ioc, unsigned cmd,
2169         void __user *arg)
2170 {
2171         struct mpt3_ioctl_command32 karg32;
2172         struct mpt3_ioctl_command32 __user *uarg;
2173         struct mpt3_ioctl_command karg;
2174
2175         if (_IOC_SIZE(cmd) != sizeof(struct mpt3_ioctl_command32))
2176                 return -EINVAL;
2177
2178         uarg = (struct mpt3_ioctl_command32 __user *) arg;
2179
2180         if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2181                 pr_err("failure at %s:%d/%s()!\n",
2182                     __FILE__, __LINE__, __func__);
2183                 return -EFAULT;
2184         }
2185
2186         memset(&karg, 0, sizeof(struct mpt3_ioctl_command));
2187         karg.hdr.ioc_number = karg32.hdr.ioc_number;
2188         karg.hdr.port_number = karg32.hdr.port_number;
2189         karg.hdr.max_data_size = karg32.hdr.max_data_size;
2190         karg.timeout = karg32.timeout;
2191         karg.max_reply_bytes = karg32.max_reply_bytes;
2192         karg.data_in_size = karg32.data_in_size;
2193         karg.data_out_size = karg32.data_out_size;
2194         karg.max_sense_bytes = karg32.max_sense_bytes;
2195         karg.data_sge_offset = karg32.data_sge_offset;
2196         karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
2197         karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
2198         karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
2199         karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
2200         return _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2201 }
2202 #endif
2203
2204 /**
2205  * _ctl_ioctl_main - main ioctl entry point
2206  * @file - (struct file)
2207  * @cmd - ioctl opcode
2208  * @arg - user space data buffer
2209  * @compat - handles 32 bit applications in 64bit os
2210  * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
2211  * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
2212  */
2213 static long
2214 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg,
2215         u8 compat, u16 mpi_version)
2216 {
2217         struct MPT3SAS_ADAPTER *ioc;
2218         struct mpt3_ioctl_header ioctl_header;
2219         enum block_state state;
2220         long ret = -EINVAL;
2221
2222         /* get IOCTL header */
2223         if (copy_from_user(&ioctl_header, (char __user *)arg,
2224             sizeof(struct mpt3_ioctl_header))) {
2225                 pr_err("failure at %s:%d/%s()!\n",
2226                     __FILE__, __LINE__, __func__);
2227                 return -EFAULT;
2228         }
2229
2230         if (_ctl_verify_adapter(ioctl_header.ioc_number,
2231                                 &ioc, mpi_version) == -1 || !ioc)
2232                 return -ENODEV;
2233
2234         /* pci_access_mutex lock acquired by ioctl path */
2235         mutex_lock(&ioc->pci_access_mutex);
2236
2237         if (ioc->shost_recovery || ioc->pci_error_recovery ||
2238             ioc->is_driver_loading || ioc->remove_host) {
2239                 ret = -EAGAIN;
2240                 goto out_unlock_pciaccess;
2241         }
2242
2243         state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2244         if (state == NON_BLOCKING) {
2245                 if (!mutex_trylock(&ioc->ctl_cmds.mutex)) {
2246                         ret = -EAGAIN;
2247                         goto out_unlock_pciaccess;
2248                 }
2249         } else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) {
2250                 ret = -ERESTARTSYS;
2251                 goto out_unlock_pciaccess;
2252         }
2253
2254
2255         switch (cmd) {
2256         case MPT3IOCINFO:
2257                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_iocinfo))
2258                         ret = _ctl_getiocinfo(ioc, arg);
2259                 break;
2260 #ifdef CONFIG_COMPAT
2261         case MPT3COMMAND32:
2262 #endif
2263         case MPT3COMMAND:
2264         {
2265                 struct mpt3_ioctl_command __user *uarg;
2266                 struct mpt3_ioctl_command karg;
2267
2268 #ifdef CONFIG_COMPAT
2269                 if (compat) {
2270                         ret = _ctl_compat_mpt_command(ioc, cmd, arg);
2271                         break;
2272                 }
2273 #endif
2274                 if (copy_from_user(&karg, arg, sizeof(karg))) {
2275                         pr_err("failure at %s:%d/%s()!\n",
2276                             __FILE__, __LINE__, __func__);
2277                         ret = -EFAULT;
2278                         break;
2279                 }
2280
2281                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_command)) {
2282                         uarg = arg;
2283                         ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2284                 }
2285                 break;
2286         }
2287         case MPT3EVENTQUERY:
2288                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventquery))
2289                         ret = _ctl_eventquery(ioc, arg);
2290                 break;
2291         case MPT3EVENTENABLE:
2292                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventenable))
2293                         ret = _ctl_eventenable(ioc, arg);
2294                 break;
2295         case MPT3EVENTREPORT:
2296                 ret = _ctl_eventreport(ioc, arg);
2297                 break;
2298         case MPT3HARDRESET:
2299                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_diag_reset))
2300                         ret = _ctl_do_reset(ioc, arg);
2301                 break;
2302         case MPT3BTDHMAPPING:
2303                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_btdh_mapping))
2304                         ret = _ctl_btdh_mapping(ioc, arg);
2305                 break;
2306         case MPT3DIAGREGISTER:
2307                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_register))
2308                         ret = _ctl_diag_register(ioc, arg);
2309                 break;
2310         case MPT3DIAGUNREGISTER:
2311                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_unregister))
2312                         ret = _ctl_diag_unregister(ioc, arg);
2313                 break;
2314         case MPT3DIAGQUERY:
2315                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_query))
2316                         ret = _ctl_diag_query(ioc, arg);
2317                 break;
2318         case MPT3DIAGRELEASE:
2319                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_release))
2320                         ret = _ctl_diag_release(ioc, arg);
2321                 break;
2322         case MPT3DIAGREADBUFFER:
2323                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_read_buffer))
2324                         ret = _ctl_diag_read_buffer(ioc, arg);
2325                 break;
2326         default:
2327                 dctlprintk(ioc, pr_info(MPT3SAS_FMT
2328                     "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
2329                 break;
2330         }
2331
2332         mutex_unlock(&ioc->ctl_cmds.mutex);
2333 out_unlock_pciaccess:
2334         mutex_unlock(&ioc->pci_access_mutex);
2335         return ret;
2336 }
2337
2338 /**
2339  * _ctl_ioctl - mpt3ctl main ioctl entry point (unlocked)
2340  * @file - (struct file)
2341  * @cmd - ioctl opcode
2342  * @arg -
2343  */
2344 static long
2345 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2346 {
2347         long ret;
2348
2349         /* pass MPI25_VERSION | MPI26_VERSION value,
2350          * to indicate that this ioctl cmd
2351          * came from mpt3ctl ioctl device.
2352          */
2353         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0,
2354                 MPI25_VERSION | MPI26_VERSION);
2355         return ret;
2356 }
2357
2358 /**
2359  * _ctl_mpt2_ioctl - mpt2ctl main ioctl entry point (unlocked)
2360  * @file - (struct file)
2361  * @cmd - ioctl opcode
2362  * @arg -
2363  */
2364 static long
2365 _ctl_mpt2_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2366 {
2367         long ret;
2368
2369         /* pass MPI2_VERSION value, to indicate that this ioctl cmd
2370          * came from mpt2ctl ioctl device.
2371          */
2372         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0, MPI2_VERSION);
2373         return ret;
2374 }
2375 #ifdef CONFIG_COMPAT
2376 /**
2377  *_ ctl_ioctl_compat - main ioctl entry point (compat)
2378  * @file -
2379  * @cmd -
2380  * @arg -
2381  *
2382  * This routine handles 32 bit applications in 64bit os.
2383  */
2384 static long
2385 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2386 {
2387         long ret;
2388
2389         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1,
2390                 MPI25_VERSION | MPI26_VERSION);
2391         return ret;
2392 }
2393
2394 /**
2395  *_ ctl_mpt2_ioctl_compat - main ioctl entry point (compat)
2396  * @file -
2397  * @cmd -
2398  * @arg -
2399  *
2400  * This routine handles 32 bit applications in 64bit os.
2401  */
2402 static long
2403 _ctl_mpt2_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2404 {
2405         long ret;
2406
2407         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1, MPI2_VERSION);
2408         return ret;
2409 }
2410 #endif
2411
2412 /* scsi host attributes */
2413 /**
2414  * _ctl_version_fw_show - firmware version
2415  * @cdev - pointer to embedded class device
2416  * @buf - the buffer returned
2417  *
2418  * A sysfs 'read-only' shost attribute.
2419  */
2420 static ssize_t
2421 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2422         char *buf)
2423 {
2424         struct Scsi_Host *shost = class_to_shost(cdev);
2425         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2426
2427         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2428             (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2429             (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2430             (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2431             ioc->facts.FWVersion.Word & 0x000000FF);
2432 }
2433 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2434
2435 /**
2436  * _ctl_version_bios_show - bios version
2437  * @cdev - pointer to embedded class device
2438  * @buf - the buffer returned
2439  *
2440  * A sysfs 'read-only' shost attribute.
2441  */
2442 static ssize_t
2443 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2444         char *buf)
2445 {
2446         struct Scsi_Host *shost = class_to_shost(cdev);
2447         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2448
2449         u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2450
2451         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2452             (version & 0xFF000000) >> 24,
2453             (version & 0x00FF0000) >> 16,
2454             (version & 0x0000FF00) >> 8,
2455             version & 0x000000FF);
2456 }
2457 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2458
2459 /**
2460  * _ctl_version_mpi_show - MPI (message passing interface) version
2461  * @cdev - pointer to embedded class device
2462  * @buf - the buffer returned
2463  *
2464  * A sysfs 'read-only' shost attribute.
2465  */
2466 static ssize_t
2467 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2468         char *buf)
2469 {
2470         struct Scsi_Host *shost = class_to_shost(cdev);
2471         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2472
2473         return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2474             ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2475 }
2476 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2477
2478 /**
2479  * _ctl_version_product_show - product name
2480  * @cdev - pointer to embedded class device
2481  * @buf - the buffer returned
2482  *
2483  * A sysfs 'read-only' shost attribute.
2484  */
2485 static ssize_t
2486 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2487         char *buf)
2488 {
2489         struct Scsi_Host *shost = class_to_shost(cdev);
2490         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2491
2492         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2493 }
2494 static DEVICE_ATTR(version_product, S_IRUGO, _ctl_version_product_show, NULL);
2495
2496 /**
2497  * _ctl_version_nvdata_persistent_show - ndvata persistent version
2498  * @cdev - pointer to embedded class device
2499  * @buf - the buffer returned
2500  *
2501  * A sysfs 'read-only' shost attribute.
2502  */
2503 static ssize_t
2504 _ctl_version_nvdata_persistent_show(struct device *cdev,
2505         struct device_attribute *attr, char *buf)
2506 {
2507         struct Scsi_Host *shost = class_to_shost(cdev);
2508         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2509
2510         return snprintf(buf, PAGE_SIZE, "%08xh\n",
2511             le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2512 }
2513 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2514         _ctl_version_nvdata_persistent_show, NULL);
2515
2516 /**
2517  * _ctl_version_nvdata_default_show - nvdata default version
2518  * @cdev - pointer to embedded class device
2519  * @buf - the buffer returned
2520  *
2521  * A sysfs 'read-only' shost attribute.
2522  */
2523 static ssize_t
2524 _ctl_version_nvdata_default_show(struct device *cdev, struct device_attribute
2525         *attr, char *buf)
2526 {
2527         struct Scsi_Host *shost = class_to_shost(cdev);
2528         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2529
2530         return snprintf(buf, PAGE_SIZE, "%08xh\n",
2531             le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2532 }
2533 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2534         _ctl_version_nvdata_default_show, NULL);
2535
2536 /**
2537  * _ctl_board_name_show - board name
2538  * @cdev - pointer to embedded class device
2539  * @buf - the buffer returned
2540  *
2541  * A sysfs 'read-only' shost attribute.
2542  */
2543 static ssize_t
2544 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2545         char *buf)
2546 {
2547         struct Scsi_Host *shost = class_to_shost(cdev);
2548         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2549
2550         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2551 }
2552 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2553
2554 /**
2555  * _ctl_board_assembly_show - board assembly name
2556  * @cdev - pointer to embedded class device
2557  * @buf - the buffer returned
2558  *
2559  * A sysfs 'read-only' shost attribute.
2560  */
2561 static ssize_t
2562 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2563         char *buf)
2564 {
2565         struct Scsi_Host *shost = class_to_shost(cdev);
2566         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2567
2568         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2569 }
2570 static DEVICE_ATTR(board_assembly, S_IRUGO, _ctl_board_assembly_show, NULL);
2571
2572 /**
2573  * _ctl_board_tracer_show - board tracer number
2574  * @cdev - pointer to embedded class device
2575  * @buf - the buffer returned
2576  *
2577  * A sysfs 'read-only' shost attribute.
2578  */
2579 static ssize_t
2580 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2581         char *buf)
2582 {
2583         struct Scsi_Host *shost = class_to_shost(cdev);
2584         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2585
2586         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2587 }
2588 static DEVICE_ATTR(board_tracer, S_IRUGO, _ctl_board_tracer_show, NULL);
2589
2590 /**
2591  * _ctl_io_delay_show - io missing delay
2592  * @cdev - pointer to embedded class device
2593  * @buf - the buffer returned
2594  *
2595  * This is for firmware implemention for deboucing device
2596  * removal events.
2597  *
2598  * A sysfs 'read-only' shost attribute.
2599  */
2600 static ssize_t
2601 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2602         char *buf)
2603 {
2604         struct Scsi_Host *shost = class_to_shost(cdev);
2605         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2606
2607         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2608 }
2609 static DEVICE_ATTR(io_delay, S_IRUGO, _ctl_io_delay_show, NULL);
2610
2611 /**
2612  * _ctl_device_delay_show - device missing delay
2613  * @cdev - pointer to embedded class device
2614  * @buf - the buffer returned
2615  *
2616  * This is for firmware implemention for deboucing device
2617  * removal events.
2618  *
2619  * A sysfs 'read-only' shost attribute.
2620  */
2621 static ssize_t
2622 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2623         char *buf)
2624 {
2625         struct Scsi_Host *shost = class_to_shost(cdev);
2626         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2627
2628         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2629 }
2630 static DEVICE_ATTR(device_delay, S_IRUGO, _ctl_device_delay_show, NULL);
2631
2632 /**
2633  * _ctl_fw_queue_depth_show - global credits
2634  * @cdev - pointer to embedded class device
2635  * @buf - the buffer returned
2636  *
2637  * This is firmware queue depth limit
2638  *
2639  * A sysfs 'read-only' shost attribute.
2640  */
2641 static ssize_t
2642 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2643         char *buf)
2644 {
2645         struct Scsi_Host *shost = class_to_shost(cdev);
2646         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2647
2648         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2649 }
2650 static DEVICE_ATTR(fw_queue_depth, S_IRUGO, _ctl_fw_queue_depth_show, NULL);
2651
2652 /**
2653  * _ctl_sas_address_show - sas address
2654  * @cdev - pointer to embedded class device
2655  * @buf - the buffer returned
2656  *
2657  * This is the controller sas address
2658  *
2659  * A sysfs 'read-only' shost attribute.
2660  */
2661 static ssize_t
2662 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2663         char *buf)
2664
2665 {
2666         struct Scsi_Host *shost = class_to_shost(cdev);
2667         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2668
2669         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2670             (unsigned long long)ioc->sas_hba.sas_address);
2671 }
2672 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2673         _ctl_host_sas_address_show, NULL);
2674
2675 /**
2676  * _ctl_logging_level_show - logging level
2677  * @cdev - pointer to embedded class device
2678  * @buf - the buffer returned
2679  *
2680  * A sysfs 'read/write' shost attribute.
2681  */
2682 static ssize_t
2683 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2684         char *buf)
2685 {
2686         struct Scsi_Host *shost = class_to_shost(cdev);
2687         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2688
2689         return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2690 }
2691 static ssize_t
2692 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2693         const char *buf, size_t count)
2694 {
2695         struct Scsi_Host *shost = class_to_shost(cdev);
2696         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2697         int val = 0;
2698
2699         if (sscanf(buf, "%x", &val) != 1)
2700                 return -EINVAL;
2701
2702         ioc->logging_level = val;
2703         pr_info(MPT3SAS_FMT "logging_level=%08xh\n", ioc->name,
2704             ioc->logging_level);
2705         return strlen(buf);
2706 }
2707 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR, _ctl_logging_level_show,
2708         _ctl_logging_level_store);
2709
2710 /**
2711  * _ctl_fwfault_debug_show - show/store fwfault_debug
2712  * @cdev - pointer to embedded class device
2713  * @buf - the buffer returned
2714  *
2715  * mpt3sas_fwfault_debug is command line option
2716  * A sysfs 'read/write' shost attribute.
2717  */
2718 static ssize_t
2719 _ctl_fwfault_debug_show(struct device *cdev, struct device_attribute *attr,
2720         char *buf)
2721 {
2722         struct Scsi_Host *shost = class_to_shost(cdev);
2723         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2724
2725         return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
2726 }
2727 static ssize_t
2728 _ctl_fwfault_debug_store(struct device *cdev, struct device_attribute *attr,
2729         const char *buf, size_t count)
2730 {
2731         struct Scsi_Host *shost = class_to_shost(cdev);
2732         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2733         int val = 0;
2734
2735         if (sscanf(buf, "%d", &val) != 1)
2736                 return -EINVAL;
2737
2738         ioc->fwfault_debug = val;
2739         pr_info(MPT3SAS_FMT "fwfault_debug=%d\n", ioc->name,
2740             ioc->fwfault_debug);
2741         return strlen(buf);
2742 }
2743 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,
2744         _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);
2745
2746 /**
2747  * _ctl_ioc_reset_count_show - ioc reset count
2748  * @cdev - pointer to embedded class device
2749  * @buf - the buffer returned
2750  *
2751  * This is firmware queue depth limit
2752  *
2753  * A sysfs 'read-only' shost attribute.
2754  */
2755 static ssize_t
2756 _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,
2757         char *buf)
2758 {
2759         struct Scsi_Host *shost = class_to_shost(cdev);
2760         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2761
2762         return snprintf(buf, PAGE_SIZE, "%d\n", ioc->ioc_reset_count);
2763 }
2764 static DEVICE_ATTR(ioc_reset_count, S_IRUGO, _ctl_ioc_reset_count_show, NULL);
2765
2766 /**
2767  * _ctl_ioc_reply_queue_count_show - number of reply queues
2768  * @cdev - pointer to embedded class device
2769  * @buf - the buffer returned
2770  *
2771  * This is number of reply queues
2772  *
2773  * A sysfs 'read-only' shost attribute.
2774  */
2775 static ssize_t
2776 _ctl_ioc_reply_queue_count_show(struct device *cdev,
2777         struct device_attribute *attr, char *buf)
2778 {
2779         u8 reply_queue_count;
2780         struct Scsi_Host *shost = class_to_shost(cdev);
2781         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2782
2783         if ((ioc->facts.IOCCapabilities &
2784             MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable)
2785                 reply_queue_count = ioc->reply_queue_count;
2786         else
2787                 reply_queue_count = 1;
2788
2789         return snprintf(buf, PAGE_SIZE, "%d\n", reply_queue_count);
2790 }
2791 static DEVICE_ATTR(reply_queue_count, S_IRUGO, _ctl_ioc_reply_queue_count_show,
2792         NULL);
2793
2794 /**
2795  * _ctl_BRM_status_show - Backup Rail Monitor Status
2796  * @cdev - pointer to embedded class device
2797  * @buf - the buffer returned
2798  *
2799  * This is number of reply queues
2800  *
2801  * A sysfs 'read-only' shost attribute.
2802  */
2803 static ssize_t
2804 _ctl_BRM_status_show(struct device *cdev, struct device_attribute *attr,
2805         char *buf)
2806 {
2807         struct Scsi_Host *shost = class_to_shost(cdev);
2808         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2809         Mpi2IOUnitPage3_t *io_unit_pg3 = NULL;
2810         Mpi2ConfigReply_t mpi_reply;
2811         u16 backup_rail_monitor_status = 0;
2812         u16 ioc_status;
2813         int sz;
2814         ssize_t rc = 0;
2815
2816         if (!ioc->is_warpdrive) {
2817                 pr_err(MPT3SAS_FMT "%s: BRM attribute is only for"
2818                     " warpdrive\n", ioc->name, __func__);
2819                 goto out;
2820         }
2821         /* pci_access_mutex lock acquired by sysfs show path */
2822         mutex_lock(&ioc->pci_access_mutex);
2823         if (ioc->pci_error_recovery || ioc->remove_host) {
2824                 mutex_unlock(&ioc->pci_access_mutex);
2825                 return 0;
2826         }
2827
2828         /* allocate upto GPIOVal 36 entries */
2829         sz = offsetof(Mpi2IOUnitPage3_t, GPIOVal) + (sizeof(u16) * 36);
2830         io_unit_pg3 = kzalloc(sz, GFP_KERNEL);
2831         if (!io_unit_pg3) {
2832                 pr_err(MPT3SAS_FMT "%s: failed allocating memory "
2833                     "for iounit_pg3: (%d) bytes\n", ioc->name, __func__, sz);
2834                 goto out;
2835         }
2836
2837         if (mpt3sas_config_get_iounit_pg3(ioc, &mpi_reply, io_unit_pg3, sz) !=
2838             0) {
2839                 pr_err(MPT3SAS_FMT
2840                     "%s: failed reading iounit_pg3\n", ioc->name,
2841                     __func__);
2842                 goto out;
2843         }
2844
2845         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
2846         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2847                 pr_err(MPT3SAS_FMT "%s: iounit_pg3 failed with "
2848                     "ioc_status(0x%04x)\n", ioc->name, __func__, ioc_status);
2849                 goto out;
2850         }
2851
2852         if (io_unit_pg3->GPIOCount < 25) {
2853                 pr_err(MPT3SAS_FMT "%s: iounit_pg3->GPIOCount less than "
2854                      "25 entries, detected (%d) entries\n", ioc->name, __func__,
2855                     io_unit_pg3->GPIOCount);
2856                 goto out;
2857         }
2858
2859         /* BRM status is in bit zero of GPIOVal[24] */
2860         backup_rail_monitor_status = le16_to_cpu(io_unit_pg3->GPIOVal[24]);
2861         rc = snprintf(buf, PAGE_SIZE, "%d\n", (backup_rail_monitor_status & 1));
2862
2863  out:
2864         kfree(io_unit_pg3);
2865         mutex_unlock(&ioc->pci_access_mutex);
2866         return rc;
2867 }
2868 static DEVICE_ATTR(BRM_status, S_IRUGO, _ctl_BRM_status_show, NULL);
2869
2870 struct DIAG_BUFFER_START {
2871         __le32  Size;
2872         __le32  DiagVersion;
2873         u8      BufferType;
2874         u8      Reserved[3];
2875         __le32  Reserved1;
2876         __le32  Reserved2;
2877         __le32  Reserved3;
2878 };
2879
2880 /**
2881  * _ctl_host_trace_buffer_size_show - host buffer size (trace only)
2882  * @cdev - pointer to embedded class device
2883  * @buf - the buffer returned
2884  *
2885  * A sysfs 'read-only' shost attribute.
2886  */
2887 static ssize_t
2888 _ctl_host_trace_buffer_size_show(struct device *cdev,
2889         struct device_attribute *attr, char *buf)
2890 {
2891         struct Scsi_Host *shost = class_to_shost(cdev);
2892         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2893         u32 size = 0;
2894         struct DIAG_BUFFER_START *request_data;
2895
2896         if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2897                 pr_err(MPT3SAS_FMT
2898                         "%s: host_trace_buffer is not registered\n",
2899                         ioc->name, __func__);
2900                 return 0;
2901         }
2902
2903         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2904             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
2905                 pr_err(MPT3SAS_FMT
2906                         "%s: host_trace_buffer is not registered\n",
2907                         ioc->name, __func__);
2908                 return 0;
2909         }
2910
2911         request_data = (struct DIAG_BUFFER_START *)
2912             ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE];
2913         if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 ||
2914             le32_to_cpu(request_data->DiagVersion) == 0x01000000 ||
2915             le32_to_cpu(request_data->DiagVersion) == 0x01010000) &&
2916             le32_to_cpu(request_data->Reserved3) == 0x4742444c)
2917                 size = le32_to_cpu(request_data->Size);
2918
2919         ioc->ring_buffer_sz = size;
2920         return snprintf(buf, PAGE_SIZE, "%d\n", size);
2921 }
2922 static DEVICE_ATTR(host_trace_buffer_size, S_IRUGO,
2923         _ctl_host_trace_buffer_size_show, NULL);
2924
2925 /**
2926  * _ctl_host_trace_buffer_show - firmware ring buffer (trace only)
2927  * @cdev - pointer to embedded class device
2928  * @buf - the buffer returned
2929  *
2930  * A sysfs 'read/write' shost attribute.
2931  *
2932  * You will only be able to read 4k bytes of ring buffer at a time.
2933  * In order to read beyond 4k bytes, you will have to write out the
2934  * offset to the same attribute, it will move the pointer.
2935  */
2936 static ssize_t
2937 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr,
2938         char *buf)
2939 {
2940         struct Scsi_Host *shost = class_to_shost(cdev);
2941         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2942         void *request_data;
2943         u32 size;
2944
2945         if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2946                 pr_err(MPT3SAS_FMT
2947                         "%s: host_trace_buffer is not registered\n",
2948                         ioc->name, __func__);
2949                 return 0;
2950         }
2951
2952         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2953             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
2954                 pr_err(MPT3SAS_FMT
2955                         "%s: host_trace_buffer is not registered\n",
2956                         ioc->name, __func__);
2957                 return 0;
2958         }
2959
2960         if (ioc->ring_buffer_offset > ioc->ring_buffer_sz)
2961                 return 0;
2962
2963         size = ioc->ring_buffer_sz - ioc->ring_buffer_offset;
2964         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2965         request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset;
2966         memcpy(buf, request_data, size);
2967         return size;
2968 }
2969
2970 static ssize_t
2971 _ctl_host_trace_buffer_store(struct device *cdev, struct device_attribute *attr,
2972         const char *buf, size_t count)
2973 {
2974         struct Scsi_Host *shost = class_to_shost(cdev);
2975         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2976         int val = 0;
2977
2978         if (sscanf(buf, "%d", &val) != 1)
2979                 return -EINVAL;
2980
2981         ioc->ring_buffer_offset = val;
2982         return strlen(buf);
2983 }
2984 static DEVICE_ATTR(host_trace_buffer, S_IRUGO | S_IWUSR,
2985         _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store);
2986
2987
2988 /*****************************************/
2989
2990 /**
2991  * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only)
2992  * @cdev - pointer to embedded class device
2993  * @buf - the buffer returned
2994  *
2995  * A sysfs 'read/write' shost attribute.
2996  *
2997  * This is a mechnism to post/release host_trace_buffers
2998  */
2999 static ssize_t
3000 _ctl_host_trace_buffer_enable_show(struct device *cdev,
3001         struct device_attribute *attr, char *buf)
3002 {
3003         struct Scsi_Host *shost = class_to_shost(cdev);
3004         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3005
3006         if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) ||
3007            ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3008             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0))
3009                 return snprintf(buf, PAGE_SIZE, "off\n");
3010         else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3011             MPT3_DIAG_BUFFER_IS_RELEASED))
3012                 return snprintf(buf, PAGE_SIZE, "release\n");
3013         else
3014                 return snprintf(buf, PAGE_SIZE, "post\n");
3015 }
3016
3017 static ssize_t
3018 _ctl_host_trace_buffer_enable_store(struct device *cdev,
3019         struct device_attribute *attr, const char *buf, size_t count)
3020 {
3021         struct Scsi_Host *shost = class_to_shost(cdev);
3022         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3023         char str[10] = "";
3024         struct mpt3_diag_register diag_register;
3025         u8 issue_reset = 0;
3026
3027         /* don't allow post/release occurr while recovery is active */
3028         if (ioc->shost_recovery || ioc->remove_host ||
3029             ioc->pci_error_recovery || ioc->is_driver_loading)
3030                 return -EBUSY;
3031
3032         if (sscanf(buf, "%9s", str) != 1)
3033                 return -EINVAL;
3034
3035         if (!strcmp(str, "post")) {
3036                 /* exit out if host buffers are already posted */
3037                 if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) &&
3038                     (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3039                     MPT3_DIAG_BUFFER_IS_REGISTERED) &&
3040                     ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3041                     MPT3_DIAG_BUFFER_IS_RELEASED) == 0))
3042                         goto out;
3043                 memset(&diag_register, 0, sizeof(struct mpt3_diag_register));
3044                 pr_info(MPT3SAS_FMT "posting host trace buffers\n",
3045                     ioc->name);
3046                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
3047                 diag_register.requested_buffer_size = (1024 * 1024);
3048                 diag_register.unique_id = 0x7075900;
3049                 ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
3050                 _ctl_diag_register_2(ioc,  &diag_register);
3051         } else if (!strcmp(str, "release")) {
3052                 /* exit out if host buffers are already released */
3053                 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE])
3054                         goto out;
3055                 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3056                     MPT3_DIAG_BUFFER_IS_REGISTERED) == 0)
3057                         goto out;
3058                 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3059                     MPT3_DIAG_BUFFER_IS_RELEASED))
3060                         goto out;
3061                 pr_info(MPT3SAS_FMT "releasing host trace buffer\n",
3062                     ioc->name);
3063                 mpt3sas_send_diag_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE,
3064                     &issue_reset);
3065         }
3066
3067  out:
3068         return strlen(buf);
3069 }
3070 static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR,
3071         _ctl_host_trace_buffer_enable_show,
3072         _ctl_host_trace_buffer_enable_store);
3073
3074 /*********** diagnostic trigger suppport *********************************/
3075
3076 /**
3077  * _ctl_diag_trigger_master_show - show the diag_trigger_master attribute
3078  * @cdev - pointer to embedded class device
3079  * @buf - the buffer returned
3080  *
3081  * A sysfs 'read/write' shost attribute.
3082  */
3083 static ssize_t
3084 _ctl_diag_trigger_master_show(struct device *cdev,
3085         struct device_attribute *attr, char *buf)
3086
3087 {
3088         struct Scsi_Host *shost = class_to_shost(cdev);
3089         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3090         unsigned long flags;
3091         ssize_t rc;
3092
3093         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3094         rc = sizeof(struct SL_WH_MASTER_TRIGGER_T);
3095         memcpy(buf, &ioc->diag_trigger_master, rc);
3096         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3097         return rc;
3098 }
3099
3100 /**
3101  * _ctl_diag_trigger_master_store - store the diag_trigger_master attribute
3102  * @cdev - pointer to embedded class device
3103  * @buf - the buffer returned
3104  *
3105  * A sysfs 'read/write' shost attribute.
3106  */
3107 static ssize_t
3108 _ctl_diag_trigger_master_store(struct device *cdev,
3109         struct device_attribute *attr, const char *buf, size_t count)
3110
3111 {
3112         struct Scsi_Host *shost = class_to_shost(cdev);
3113         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3114         unsigned long flags;
3115         ssize_t rc;
3116
3117         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3118         rc = min(sizeof(struct SL_WH_MASTER_TRIGGER_T), count);
3119         memset(&ioc->diag_trigger_master, 0,
3120             sizeof(struct SL_WH_MASTER_TRIGGER_T));
3121         memcpy(&ioc->diag_trigger_master, buf, rc);
3122         ioc->diag_trigger_master.MasterData |=
3123             (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET);
3124         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3125         return rc;
3126 }
3127 static DEVICE_ATTR(diag_trigger_master, S_IRUGO | S_IWUSR,
3128         _ctl_diag_trigger_master_show, _ctl_diag_trigger_master_store);
3129
3130
3131 /**
3132  * _ctl_diag_trigger_event_show - show the diag_trigger_event attribute
3133  * @cdev - pointer to embedded class device
3134  * @buf - the buffer returned
3135  *
3136  * A sysfs 'read/write' shost attribute.
3137  */
3138 static ssize_t
3139 _ctl_diag_trigger_event_show(struct device *cdev,
3140         struct device_attribute *attr, char *buf)
3141 {
3142         struct Scsi_Host *shost = class_to_shost(cdev);
3143         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3144         unsigned long flags;
3145         ssize_t rc;
3146
3147         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3148         rc = sizeof(struct SL_WH_EVENT_TRIGGERS_T);
3149         memcpy(buf, &ioc->diag_trigger_event, rc);
3150         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3151         return rc;
3152 }
3153
3154 /**
3155  * _ctl_diag_trigger_event_store - store the diag_trigger_event attribute
3156  * @cdev - pointer to embedded class device
3157  * @buf - the buffer returned
3158  *
3159  * A sysfs 'read/write' shost attribute.
3160  */
3161 static ssize_t
3162 _ctl_diag_trigger_event_store(struct device *cdev,
3163         struct device_attribute *attr, const char *buf, size_t count)
3164
3165 {
3166         struct Scsi_Host *shost = class_to_shost(cdev);
3167         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3168         unsigned long flags;
3169         ssize_t sz;
3170
3171         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3172         sz = min(sizeof(struct SL_WH_EVENT_TRIGGERS_T), count);
3173         memset(&ioc->diag_trigger_event, 0,
3174             sizeof(struct SL_WH_EVENT_TRIGGERS_T));
3175         memcpy(&ioc->diag_trigger_event, buf, sz);
3176         if (ioc->diag_trigger_event.ValidEntries > NUM_VALID_ENTRIES)
3177                 ioc->diag_trigger_event.ValidEntries = NUM_VALID_ENTRIES;
3178         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3179         return sz;
3180 }
3181 static DEVICE_ATTR(diag_trigger_event, S_IRUGO | S_IWUSR,
3182         _ctl_diag_trigger_event_show, _ctl_diag_trigger_event_store);
3183
3184
3185 /**
3186  * _ctl_diag_trigger_scsi_show - show the diag_trigger_scsi attribute
3187  * @cdev - pointer to embedded class device
3188  * @buf - the buffer returned
3189  *
3190  * A sysfs 'read/write' shost attribute.
3191  */
3192 static ssize_t
3193 _ctl_diag_trigger_scsi_show(struct device *cdev,
3194         struct device_attribute *attr, char *buf)
3195 {
3196         struct Scsi_Host *shost = class_to_shost(cdev);
3197         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3198         unsigned long flags;
3199         ssize_t rc;
3200
3201         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3202         rc = sizeof(struct SL_WH_SCSI_TRIGGERS_T);
3203         memcpy(buf, &ioc->diag_trigger_scsi, rc);
3204         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3205         return rc;
3206 }
3207
3208 /**
3209  * _ctl_diag_trigger_scsi_store - store the diag_trigger_scsi attribute
3210  * @cdev - pointer to embedded class device
3211  * @buf - the buffer returned
3212  *
3213  * A sysfs 'read/write' shost attribute.
3214  */
3215 static ssize_t
3216 _ctl_diag_trigger_scsi_store(struct device *cdev,
3217         struct device_attribute *attr, const char *buf, size_t count)
3218 {
3219         struct Scsi_Host *shost = class_to_shost(cdev);
3220         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3221         unsigned long flags;
3222         ssize_t sz;
3223
3224         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3225         sz = min(sizeof(struct SL_WH_SCSI_TRIGGERS_T), count);
3226         memset(&ioc->diag_trigger_scsi, 0,
3227             sizeof(struct SL_WH_EVENT_TRIGGERS_T));
3228         memcpy(&ioc->diag_trigger_scsi, buf, sz);
3229         if (ioc->diag_trigger_scsi.ValidEntries > NUM_VALID_ENTRIES)
3230                 ioc->diag_trigger_scsi.ValidEntries = NUM_VALID_ENTRIES;
3231         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3232         return sz;
3233 }
3234 static DEVICE_ATTR(diag_trigger_scsi, S_IRUGO | S_IWUSR,
3235         _ctl_diag_trigger_scsi_show, _ctl_diag_trigger_scsi_store);
3236
3237
3238 /**
3239  * _ctl_diag_trigger_scsi_show - show the diag_trigger_mpi attribute
3240  * @cdev - pointer to embedded class device
3241  * @buf - the buffer returned
3242  *
3243  * A sysfs 'read/write' shost attribute.
3244  */
3245 static ssize_t
3246 _ctl_diag_trigger_mpi_show(struct device *cdev,
3247         struct device_attribute *attr, char *buf)
3248 {
3249         struct Scsi_Host *shost = class_to_shost(cdev);
3250         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3251         unsigned long flags;
3252         ssize_t rc;
3253
3254         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3255         rc = sizeof(struct SL_WH_MPI_TRIGGERS_T);
3256         memcpy(buf, &ioc->diag_trigger_mpi, rc);
3257         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3258         return rc;
3259 }
3260
3261 /**
3262  * _ctl_diag_trigger_mpi_store - store the diag_trigger_mpi attribute
3263  * @cdev - pointer to embedded class device
3264  * @buf - the buffer returned
3265  *
3266  * A sysfs 'read/write' shost attribute.
3267  */
3268 static ssize_t
3269 _ctl_diag_trigger_mpi_store(struct device *cdev,
3270         struct device_attribute *attr, const char *buf, size_t count)
3271 {
3272         struct Scsi_Host *shost = class_to_shost(cdev);
3273         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3274         unsigned long flags;
3275         ssize_t sz;
3276
3277         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3278         sz = min(sizeof(struct SL_WH_MPI_TRIGGERS_T), count);
3279         memset(&ioc->diag_trigger_mpi, 0,
3280             sizeof(ioc->diag_trigger_mpi));
3281         memcpy(&ioc->diag_trigger_mpi, buf, sz);
3282         if (ioc->diag_trigger_mpi.ValidEntries > NUM_VALID_ENTRIES)
3283                 ioc->diag_trigger_mpi.ValidEntries = NUM_VALID_ENTRIES;
3284         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3285         return sz;
3286 }
3287
3288 static DEVICE_ATTR(diag_trigger_mpi, S_IRUGO | S_IWUSR,
3289         _ctl_diag_trigger_mpi_show, _ctl_diag_trigger_mpi_store);
3290
3291 /*********** diagnostic trigger suppport *** END ****************************/
3292
3293
3294
3295 /*****************************************/
3296
3297 struct device_attribute *mpt3sas_host_attrs[] = {
3298         &dev_attr_version_fw,
3299         &dev_attr_version_bios,
3300         &dev_attr_version_mpi,
3301         &dev_attr_version_product,
3302         &dev_attr_version_nvdata_persistent,
3303         &dev_attr_version_nvdata_default,
3304         &dev_attr_board_name,
3305         &dev_attr_board_assembly,
3306         &dev_attr_board_tracer,
3307         &dev_attr_io_delay,
3308         &dev_attr_device_delay,
3309         &dev_attr_logging_level,
3310         &dev_attr_fwfault_debug,
3311         &dev_attr_fw_queue_depth,
3312         &dev_attr_host_sas_address,
3313         &dev_attr_ioc_reset_count,
3314         &dev_attr_host_trace_buffer_size,
3315         &dev_attr_host_trace_buffer,
3316         &dev_attr_host_trace_buffer_enable,
3317         &dev_attr_reply_queue_count,
3318         &dev_attr_diag_trigger_master,
3319         &dev_attr_diag_trigger_event,
3320         &dev_attr_diag_trigger_scsi,
3321         &dev_attr_diag_trigger_mpi,
3322         &dev_attr_BRM_status,
3323         NULL,
3324 };
3325
3326 /* device attributes */
3327
3328 /**
3329  * _ctl_device_sas_address_show - sas address
3330  * @cdev - pointer to embedded class device
3331  * @buf - the buffer returned
3332  *
3333  * This is the sas address for the target
3334  *
3335  * A sysfs 'read-only' shost attribute.
3336  */
3337 static ssize_t
3338 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
3339         char *buf)
3340 {
3341         struct scsi_device *sdev = to_scsi_device(dev);
3342         struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3343
3344         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
3345             (unsigned long long)sas_device_priv_data->sas_target->sas_address);
3346 }
3347 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
3348
3349 /**
3350  * _ctl_device_handle_show - device handle
3351  * @cdev - pointer to embedded class device
3352  * @buf - the buffer returned
3353  *
3354  * This is the firmware assigned device handle
3355  *
3356  * A sysfs 'read-only' shost attribute.
3357  */
3358 static ssize_t
3359 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
3360         char *buf)
3361 {
3362         struct scsi_device *sdev = to_scsi_device(dev);
3363         struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3364
3365         return snprintf(buf, PAGE_SIZE, "0x%04x\n",
3366             sas_device_priv_data->sas_target->handle);
3367 }
3368 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
3369
3370 struct device_attribute *mpt3sas_dev_attrs[] = {
3371         &dev_attr_sas_address,
3372         &dev_attr_sas_device_handle,
3373         NULL,
3374 };
3375
3376 /* file operations table for mpt3ctl device */
3377 static const struct file_operations ctl_fops = {
3378         .owner = THIS_MODULE,
3379         .unlocked_ioctl = _ctl_ioctl,
3380         .poll = _ctl_poll,
3381         .fasync = _ctl_fasync,
3382 #ifdef CONFIG_COMPAT
3383         .compat_ioctl = _ctl_ioctl_compat,
3384 #endif
3385 };
3386
3387 /* file operations table for mpt2ctl device */
3388 static const struct file_operations ctl_gen2_fops = {
3389         .owner = THIS_MODULE,
3390         .unlocked_ioctl = _ctl_mpt2_ioctl,
3391         .poll = _ctl_poll,
3392         .fasync = _ctl_fasync,
3393 #ifdef CONFIG_COMPAT
3394         .compat_ioctl = _ctl_mpt2_ioctl_compat,
3395 #endif
3396 };
3397
3398 static struct miscdevice ctl_dev = {
3399         .minor  = MPT3SAS_MINOR,
3400         .name   = MPT3SAS_DEV_NAME,
3401         .fops   = &ctl_fops,
3402 };
3403
3404 static struct miscdevice gen2_ctl_dev = {
3405         .minor  = MPT2SAS_MINOR,
3406         .name   = MPT2SAS_DEV_NAME,
3407         .fops   = &ctl_gen2_fops,
3408 };
3409
3410 /**
3411  * mpt3sas_ctl_init - main entry point for ctl.
3412  *
3413  */
3414 void
3415 mpt3sas_ctl_init(ushort hbas_to_enumerate)
3416 {
3417         async_queue = NULL;
3418
3419         /* Don't register mpt3ctl ioctl device if
3420          * hbas_to_enumarate is one.
3421          */
3422         if (hbas_to_enumerate != 1)
3423                 if (misc_register(&ctl_dev) < 0)
3424                         pr_err("%s can't register misc device [minor=%d]\n",
3425                             MPT3SAS_DRIVER_NAME, MPT3SAS_MINOR);
3426
3427         /* Don't register mpt3ctl ioctl device if
3428          * hbas_to_enumarate is two.
3429          */
3430         if (hbas_to_enumerate != 2)
3431                 if (misc_register(&gen2_ctl_dev) < 0)
3432                         pr_err("%s can't register misc device [minor=%d]\n",
3433                             MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
3434
3435         init_waitqueue_head(&ctl_poll_wait);
3436 }
3437
3438 /**
3439  * mpt3sas_ctl_exit - exit point for ctl
3440  *
3441  */
3442 void
3443 mpt3sas_ctl_exit(ushort hbas_to_enumerate)
3444 {
3445         struct MPT3SAS_ADAPTER *ioc;
3446         int i;
3447
3448         list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
3449
3450                 /* free memory associated to diag buffers */
3451                 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
3452                         if (!ioc->diag_buffer[i])
3453                                 continue;
3454                         if (!(ioc->diag_buffer_status[i] &
3455                             MPT3_DIAG_BUFFER_IS_REGISTERED))
3456                                 continue;
3457                         if ((ioc->diag_buffer_status[i] &
3458                             MPT3_DIAG_BUFFER_IS_RELEASED))
3459                                 continue;
3460                         pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
3461                         ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
3462                         ioc->diag_buffer[i] = NULL;
3463                         ioc->diag_buffer_status[i] = 0;
3464                 }
3465
3466                 kfree(ioc->event_log);
3467         }
3468         if (hbas_to_enumerate != 1)
3469                 misc_deregister(&ctl_dev);
3470         if (hbas_to_enumerate != 2)
3471                 misc_deregister(&gen2_ctl_dev);
3472 }