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_display_some_debug - debug routine
  83  * @ioc: per adapter object
  84  * @smid: system request message index
  85  * @calling_function_name: string pass from calling function
  86  * @mpi_reply: reply message frame
  87  * Context: none.
  88  *
  89  * Function for displaying debug info helpful when debugging issues
  90  * in this module.
  91  */
  92 static void
  93 _ctl_display_some_debug(struct MPT3SAS_ADAPTER *ioc, u16 smid,
  94         char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
  95 {
  96         Mpi2ConfigRequest_t *mpi_request;
  97         char *desc = NULL;
  98
  99         if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
 100                 return;
 101
 102         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
 103         switch (mpi_request->Function) {
 104         case MPI2_FUNCTION_SCSI_IO_REQUEST:
 105         {
 106                 Mpi2SCSIIORequest_t *scsi_request =
 107                     (Mpi2SCSIIORequest_t *)mpi_request;
 108
 109                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 110                     "scsi_io, cmd(0x%02x), cdb_len(%d)",
 111                     scsi_request->CDB.CDB32[0],
 112                     le16_to_cpu(scsi_request->IoFlags) & 0xF);
 113                 desc = ioc->tmp_string;
 114                 break;
 115         }
 116         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 117                 desc = "task_mgmt";
 118                 break;
 119         case MPI2_FUNCTION_IOC_INIT:
 120                 desc = "ioc_init";
 121                 break;
 122         case MPI2_FUNCTION_IOC_FACTS:
 123                 desc = "ioc_facts";
 124                 break;
 125         case MPI2_FUNCTION_CONFIG:
 126         {
 127                 Mpi2ConfigRequest_t *config_request =
 128                     (Mpi2ConfigRequest_t *)mpi_request;
 129
 130                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 131                     "config, type(0x%02x), ext_type(0x%02x), number(%d)",
 132                     (config_request->Header.PageType &
 133                      MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
 134                     config_request->Header.PageNumber);
 135                 desc = ioc->tmp_string;
 136                 break;
 137         }
 138         case MPI2_FUNCTION_PORT_FACTS:
 139                 desc = "port_facts";
 140                 break;
 141         case MPI2_FUNCTION_PORT_ENABLE:
 142                 desc = "port_enable";
 143                 break;
 144         case MPI2_FUNCTION_EVENT_NOTIFICATION:
 145                 desc = "event_notification";
 146                 break;
 147         case MPI2_FUNCTION_FW_DOWNLOAD:
 148                 desc = "fw_download";
 149                 break;
 150         case MPI2_FUNCTION_FW_UPLOAD:
 151                 desc = "fw_upload";
 152                 break;
 153         case MPI2_FUNCTION_RAID_ACTION:
 154                 desc = "raid_action";
 155                 break;
 156         case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
 157         {
 158                 Mpi2SCSIIORequest_t *scsi_request =
 159                     (Mpi2SCSIIORequest_t *)mpi_request;
 160
 161                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 162                     "raid_pass, cmd(0x%02x), cdb_len(%d)",
 163                     scsi_request->CDB.CDB32[0],
 164                     le16_to_cpu(scsi_request->IoFlags) & 0xF);
 165                 desc = ioc->tmp_string;
 166                 break;
 167         }
 168         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 169                 desc = "sas_iounit_cntl";
 170                 break;
 171         case MPI2_FUNCTION_SATA_PASSTHROUGH:
 172                 desc = "sata_pass";
 173                 break;
 174         case MPI2_FUNCTION_DIAG_BUFFER_POST:
 175                 desc = "diag_buffer_post";
 176                 break;
 177         case MPI2_FUNCTION_DIAG_RELEASE:
 178                 desc = "diag_release";
 179                 break;
 180         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 181                 desc = "smp_passthrough";
 182                 break;
 183         }
 184
 185         if (!desc)
 186                 return;
 187
 188         ioc_info(ioc, "%s: %s, smid(%d)\n", calling_function_name, desc, smid);
 189
 190         if (!mpi_reply)
 191                 return;
 192
 193         if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
 194                 ioc_info(ioc, "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
 195                          le16_to_cpu(mpi_reply->IOCStatus),
 196                          le32_to_cpu(mpi_reply->IOCLogInfo));
 197
 198         if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 199             mpi_request->Function ==
 200             MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 201                 Mpi2SCSIIOReply_t *scsi_reply =
 202                     (Mpi2SCSIIOReply_t *)mpi_reply;
 203                 struct _sas_device *sas_device = NULL;
 204                 struct _pcie_device *pcie_device = NULL;
 205
 206                 sas_device = mpt3sas_get_sdev_by_handle(ioc,
 207                     le16_to_cpu(scsi_reply->DevHandle));
 208                 if (sas_device) {
 209                         ioc_warn(ioc, "\tsas_address(0x%016llx), phy(%d)\n",
 210                                  (u64)sas_device->sas_address,
 211                                  sas_device->phy);
 212                         ioc_warn(ioc, "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
 213                                  (u64)sas_device->enclosure_logical_id,
 214                                  sas_device->slot);
 215                         sas_device_put(sas_device);
 216                 }
 217                 if (!sas_device) {
 218                         pcie_device = mpt3sas_get_pdev_by_handle(ioc,
 219                                 le16_to_cpu(scsi_reply->DevHandle));
 220                         if (pcie_device) {
 221                                 ioc_warn(ioc, "\tWWID(0x%016llx), port(%d)\n",
 222                                          (unsigned long long)pcie_device->wwid,
 223                                          pcie_device->port_num);
 224                                 if (pcie_device->enclosure_handle != 0)
 225                                         ioc_warn(ioc, "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
 226                                                  (u64)pcie_device->enclosure_logical_id,
 227                                                  pcie_device->slot);
 228                                 pcie_device_put(pcie_device);
 229                         }
 230                 }
 231                 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
 232                         ioc_info(ioc, "\tscsi_state(0x%02x), scsi_status(0x%02x)\n",
 233                                  scsi_reply->SCSIState,
 234                                  scsi_reply->SCSIStatus);
 235         }
 236 }
 237
 238 /**
 239  * mpt3sas_ctl_done - ctl module completion routine
 240  * @ioc: per adapter object
 241  * @smid: system request message index
 242  * @msix_index: MSIX table index supplied by the OS
 243  * @reply: reply message frame(lower 32bit addr)
 244  * Context: none.
 245  *
 246  * The callback handler when using ioc->ctl_cb_idx.
 247  *
 248  * Return: 1 meaning mf should be freed from _base_interrupt
 249  *         0 means the mf is freed from this function.
 250  */
 251 u8
 252 mpt3sas_ctl_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 253         u32 reply)
 254 {
 255         MPI2DefaultReply_t *mpi_reply;
 256         Mpi2SCSIIOReply_t *scsiio_reply;
 257         Mpi26NVMeEncapsulatedErrorReply_t *nvme_error_reply;
 258         const void *sense_data;
 259         u32 sz;
 260
 261         if (ioc->ctl_cmds.status == MPT3_CMD_NOT_USED)
 262                 return 1;
 263         if (ioc->ctl_cmds.smid != smid)
 264                 return 1;
 265         ioc->ctl_cmds.status |= MPT3_CMD_COMPLETE;
 266         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
 267         if (mpi_reply) {
 268                 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 269                 ioc->ctl_cmds.status |= MPT3_CMD_REPLY_VALID;
 270                 /* get sense data */
 271                 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 272                     mpi_reply->Function ==
 273                     MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 274                         scsiio_reply = (Mpi2SCSIIOReply_t *)mpi_reply;
 275                         if (scsiio_reply->SCSIState &
 276                             MPI2_SCSI_STATE_AUTOSENSE_VALID) {
 277                                 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
 278                                     le32_to_cpu(scsiio_reply->SenseCount));
 279                                 sense_data = mpt3sas_base_get_sense_buffer(ioc,
 280                                     smid);
 281                                 memcpy(ioc->ctl_cmds.sense, sense_data, sz);
 282                         }
 283                 }
 284                 /*
 285                  * Get Error Response data for NVMe device. The ctl_cmds.sense
 286                  * buffer is used to store the Error Response data.
 287                  */
 288                 if (mpi_reply->Function == MPI2_FUNCTION_NVME_ENCAPSULATED) {
 289                         nvme_error_reply =
 290                             (Mpi26NVMeEncapsulatedErrorReply_t *)mpi_reply;
 291                         sz = min_t(u32, NVME_ERROR_RESPONSE_SIZE,
 292                             le16_to_cpu(nvme_error_reply->ErrorResponseCount));
 293                         sense_data = mpt3sas_base_get_sense_buffer(ioc, smid);
 294                         memcpy(ioc->ctl_cmds.sense, sense_data, sz);
 295                 }
 296         }
 297
 298         _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
 299         ioc->ctl_cmds.status &= ~MPT3_CMD_PENDING;
 300         complete(&ioc->ctl_cmds.done);
 301         return 1;
 302 }
 303
 304 /**
 305  * _ctl_check_event_type - determines when an event needs logging
 306  * @ioc: per adapter object
 307  * @event: firmware event
 308  *
 309  * The bitmask in ioc->event_type[] indicates which events should be
 310  * be saved in the driver event_log.  This bitmask is set by application.
 311  *
 312  * Return: 1 when event should be captured, or zero means no match.
 313  */
 314 static int
 315 _ctl_check_event_type(struct MPT3SAS_ADAPTER *ioc, u16 event)
 316 {
 317         u16 i;
 318         u32 desired_event;
 319
 320         if (event >= 128 || !event || !ioc->event_log)
 321                 return 0;
 322
 323         desired_event = (1 << (event % 32));
 324         if (!desired_event)
 325                 desired_event = 1;
 326         i = event / 32;
 327         return desired_event & ioc->event_type[i];
 328 }
 329
 330 /**
 331  * mpt3sas_ctl_add_to_event_log - add event
 332  * @ioc: per adapter object
 333  * @mpi_reply: reply message frame
 334  */
 335 void
 336 mpt3sas_ctl_add_to_event_log(struct MPT3SAS_ADAPTER *ioc,
 337         Mpi2EventNotificationReply_t *mpi_reply)
 338 {
 339         struct MPT3_IOCTL_EVENTS *event_log;
 340         u16 event;
 341         int i;
 342         u32 sz, event_data_sz;
 343         u8 send_aen = 0;
 344
 345         if (!ioc->event_log)
 346                 return;
 347
 348         event = le16_to_cpu(mpi_reply->Event);
 349
 350         if (_ctl_check_event_type(ioc, event)) {
 351
 352                 /* insert entry into circular event_log */
 353                 i = ioc->event_context % MPT3SAS_CTL_EVENT_LOG_SIZE;
 354                 event_log = ioc->event_log;
 355                 event_log[i].event = event;
 356                 event_log[i].context = ioc->event_context++;
 357
 358                 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
 359                 sz = min_t(u32, event_data_sz, MPT3_EVENT_DATA_SIZE);
 360                 memset(event_log[i].data, 0, MPT3_EVENT_DATA_SIZE);
 361                 memcpy(event_log[i].data, mpi_reply->EventData, sz);
 362                 send_aen = 1;
 363         }
 364
 365         /* This aen_event_read_flag flag is set until the
 366          * application has read the event log.
 367          * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
 368          */
 369         if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
 370             (send_aen && !ioc->aen_event_read_flag)) {
 371                 ioc->aen_event_read_flag = 1;
 372                 wake_up_interruptible(&ctl_poll_wait);
 373                 if (async_queue)
 374                         kill_fasync(&async_queue, SIGIO, POLL_IN);
 375         }
 376 }
 377
 378 /**
 379  * mpt3sas_ctl_event_callback - firmware event handler (called at ISR time)
 380  * @ioc: per adapter object
 381  * @msix_index: MSIX table index supplied by the OS
 382  * @reply: reply message frame(lower 32bit addr)
 383  * Context: interrupt.
 384  *
 385  * This function merely adds a new work task into ioc->firmware_event_thread.
 386  * The tasks are worked from _firmware_event_work in user context.
 387  *
 388  * Return: 1 meaning mf should be freed from _base_interrupt
 389  *         0 means the mf is freed from this function.
 390  */
 391 u8
 392 mpt3sas_ctl_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
 393         u32 reply)
 394 {
 395         Mpi2EventNotificationReply_t *mpi_reply;
 396
 397         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
 398         if (mpi_reply)
 399                 mpt3sas_ctl_add_to_event_log(ioc, mpi_reply);
 400         return 1;
 401 }
 402
 403 /**
 404  * _ctl_verify_adapter - validates ioc_number passed from application
 405  * @ioc_number: ?
 406  * @iocpp: The ioc pointer is returned in this.
 407  * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
 408  * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
 409  *
 410  * Return: (-1) means error, else ioc_number.
 411  */
 412 static int
 413 _ctl_verify_adapter(int ioc_number, struct MPT3SAS_ADAPTER **iocpp,
 414                                                         int mpi_version)
 415 {
 416         struct MPT3SAS_ADAPTER *ioc;
 417         int version = 0;
 418         /* global ioc lock to protect controller on list operations */
 419         spin_lock(&gioc_lock);
 420         list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
 421                 if (ioc->id != ioc_number)
 422                         continue;
 423                 /* Check whether this ioctl command is from right
 424                  * ioctl device or not, if not continue the search.
 425                  */
 426                 version = ioc->hba_mpi_version_belonged;
 427                 /* MPI25_VERSION and MPI26_VERSION uses same ioctl
 428                  * device.
 429                  */
 430                 if (mpi_version == (MPI25_VERSION | MPI26_VERSION)) {
 431                         if ((version == MPI25_VERSION) ||
 432                                 (version == MPI26_VERSION))
 433                                 goto out;
 434                         else
 435                                 continue;
 436                 } else {
 437                         if (version != mpi_version)
 438                                 continue;
 439                 }
 440 out:
 441                 spin_unlock(&gioc_lock);
 442                 *iocpp = ioc;
 443                 return ioc_number;
 444         }
 445         spin_unlock(&gioc_lock);
 446         *iocpp = NULL;
 447         return -1;
 448 }
 449
 450 /**
 451  * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
 452  * @ioc: per adapter object
 453  *
 454  * The handler for doing any required cleanup or initialization.
 455  */
 456 void mpt3sas_ctl_pre_reset_handler(struct MPT3SAS_ADAPTER *ioc)
 457 {
 458         int i;
 459         u8 issue_reset;
 460
 461         dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_PRE_RESET\n", __func__));
 462         for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
 463                 if (!(ioc->diag_buffer_status[i] &
 464                       MPT3_DIAG_BUFFER_IS_REGISTERED))
 465                         continue;
 466                 if ((ioc->diag_buffer_status[i] &
 467                      MPT3_DIAG_BUFFER_IS_RELEASED))
 468                         continue;
 469                 mpt3sas_send_diag_release(ioc, i, &issue_reset);
 470         }
 471 }
 472
 473 /**
 474  * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
 475  * @ioc: per adapter object
 476  *
 477  * The handler for doing any required cleanup or initialization.
 478  */
 479 void mpt3sas_ctl_after_reset_handler(struct MPT3SAS_ADAPTER *ioc)
 480 {
 481         dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_AFTER_RESET\n", __func__));
 482         if (ioc->ctl_cmds.status & MPT3_CMD_PENDING) {
 483                 ioc->ctl_cmds.status |= MPT3_CMD_RESET;
 484                 mpt3sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
 485                 complete(&ioc->ctl_cmds.done);
 486         }
 487 }
 488
 489 /**
 490  * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
 491  * @ioc: per adapter object
 492  *
 493  * The handler for doing any required cleanup or initialization.
 494  */
 495 void mpt3sas_ctl_reset_done_handler(struct MPT3SAS_ADAPTER *ioc)
 496 {
 497         int i;
 498
 499         dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_DONE_RESET\n", __func__));
 500
 501         for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
 502                 if (!(ioc->diag_buffer_status[i] &
 503                       MPT3_DIAG_BUFFER_IS_REGISTERED))
 504                         continue;
 505                 if ((ioc->diag_buffer_status[i] &
 506                      MPT3_DIAG_BUFFER_IS_RELEASED))
 507                         continue;
 508                 ioc->diag_buffer_status[i] |=
 509                         MPT3_DIAG_BUFFER_IS_DIAG_RESET;
 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  * @filep: ?
 530  * @wait: ?
 531  *
 532  */
 533 static __poll_t
 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 EPOLLIN | EPOLLRDNORM;
 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  * Return: 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 smid;
 567         u16 handle;
 568         struct scsi_cmnd *scmd;
 569         struct MPT3SAS_DEVICE *priv_data;
 570         Mpi2SCSITaskManagementReply_t *tm_reply;
 571         u32 sz;
 572         u32 lun;
 573         char *desc = NULL;
 574
 575         if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
 576                 desc = "abort_task";
 577         else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
 578                 desc = "query_task";
 579         else
 580                 return 0;
 581
 582         lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
 583
 584         handle = le16_to_cpu(tm_request->DevHandle);
 585         for (smid = ioc->scsiio_depth; smid && !found; smid--) {
 586                 struct scsiio_tracker *st;
 587
 588                 scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid);
 589                 if (!scmd)
 590                         continue;
 591                 if (lun != scmd->device->lun)
 592                         continue;
 593                 priv_data = scmd->device->hostdata;
 594                 if (priv_data->sas_target == NULL)
 595                         continue;
 596                 if (priv_data->sas_target->handle != handle)
 597                         continue;
 598                 st = scsi_cmd_priv(scmd);
 599                 tm_request->TaskMID = cpu_to_le16(st->smid);
 600                 found = 1;
 601         }
 602
 603         if (!found) {
 604                 dctlprintk(ioc,
 605                            ioc_info(ioc, "%s: handle(0x%04x), lun(%d), no active mid!!\n",
 606                                     desc, le16_to_cpu(tm_request->DevHandle),
 607                                     lun));
 608                 tm_reply = ioc->ctl_cmds.reply;
 609                 tm_reply->DevHandle = tm_request->DevHandle;
 610                 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
 611                 tm_reply->TaskType = tm_request->TaskType;
 612                 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
 613                 tm_reply->VP_ID = tm_request->VP_ID;
 614                 tm_reply->VF_ID = tm_request->VF_ID;
 615                 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
 616                 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
 617                     sz))
 618                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 619                             __LINE__, __func__);
 620                 return 1;
 621         }
 622
 623         dctlprintk(ioc,
 624                    ioc_info(ioc, "%s: handle(0x%04x), lun(%d), task_mid(%d)\n",
 625                             desc, le16_to_cpu(tm_request->DevHandle), lun,
 626                             le16_to_cpu(tm_request->TaskMID)));
 627         return 0;
 628 }
 629
 630 /**
 631  * _ctl_do_mpt_command - main handler for MPT3COMMAND opcode
 632  * @ioc: per adapter object
 633  * @karg: (struct mpt3_ioctl_command)
 634  * @mf: pointer to mf in user space
 635  */
 636 static long
 637 _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
 638         void __user *mf)
 639 {
 640         MPI2RequestHeader_t *mpi_request = NULL, *request;
 641         MPI2DefaultReply_t *mpi_reply;
 642         Mpi26NVMeEncapsulatedRequest_t *nvme_encap_request = NULL;
 643         struct _pcie_device *pcie_device = NULL;
 644         u16 smid;
 645         u8 timeout;
 646         u8 issue_reset;
 647         u32 sz, sz_arg;
 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 device_handle = MPT3SAS_INVALID_DEVICE_HANDLE;
 657         u8 tr_method = MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE;
 658
 659         issue_reset = 0;
 660
 661         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
 662                 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
 663                 ret = -EAGAIN;
 664                 goto out;
 665         }
 666
 667         ret = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
 668         if (ret)
 669                 goto out;
 670
 671         mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL);
 672         if (!mpi_request) {
 673                 ioc_err(ioc, "%s: failed obtaining a memory for mpi_request\n",
 674                         __func__);
 675                 ret = -ENOMEM;
 676                 goto out;
 677         }
 678
 679         /* Check for overflow and wraparound */
 680         if (karg.data_sge_offset * 4 > ioc->request_sz ||
 681             karg.data_sge_offset > (UINT_MAX / 4)) {
 682                 ret = -EINVAL;
 683                 goto out;
 684         }
 685
 686         /* copy in request message frame from user */
 687         if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
 688                 pr_err("failure at %s:%d/%s()!\n", __FILE__, __LINE__,
 689                     __func__);
 690                 ret = -EFAULT;
 691                 goto out;
 692         }
 693
 694         if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
 695                 smid = mpt3sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx);
 696                 if (!smid) {
 697                         ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
 698                         ret = -EAGAIN;
 699                         goto out;
 700                 }
 701         } else {
 702                 /* Use first reserved smid for passthrough ioctls */
 703                 smid = ioc->scsiio_depth - INTERNAL_SCSIIO_CMDS_COUNT + 1;
 704         }
 705
 706         ret = 0;
 707         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
 708         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
 709         request = mpt3sas_base_get_msg_frame(ioc, smid);
 710         memcpy(request, mpi_request, karg.data_sge_offset*4);
 711         ioc->ctl_cmds.smid = smid;
 712         data_out_sz = karg.data_out_size;
 713         data_in_sz = karg.data_in_size;
 714
 715         if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 716             mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
 717             mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT ||
 718             mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH ||
 719             mpi_request->Function == MPI2_FUNCTION_NVME_ENCAPSULATED) {
 720
 721                 device_handle = le16_to_cpu(mpi_request->FunctionDependent1);
 722                 if (!device_handle || (device_handle >
 723                     ioc->facts.MaxDevHandle)) {
 724                         ret = -EINVAL;
 725                         mpt3sas_base_free_smid(ioc, smid);
 726                         goto out;
 727                 }
 728         }
 729
 730         /* obtain dma-able memory for data transfer */
 731         if (data_out_sz) /* WRITE */ {
 732                 data_out = dma_alloc_coherent(&ioc->pdev->dev, data_out_sz,
 733                                 &data_out_dma, GFP_KERNEL);
 734                 if (!data_out) {
 735                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 736                             __LINE__, __func__);
 737                         ret = -ENOMEM;
 738                         mpt3sas_base_free_smid(ioc, smid);
 739                         goto out;
 740                 }
 741                 if (copy_from_user(data_out, karg.data_out_buf_ptr,
 742                         data_out_sz)) {
 743                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 744                             __LINE__, __func__);
 745                         ret =  -EFAULT;
 746                         mpt3sas_base_free_smid(ioc, smid);
 747                         goto out;
 748                 }
 749         }
 750
 751         if (data_in_sz) /* READ */ {
 752                 data_in = dma_alloc_coherent(&ioc->pdev->dev, data_in_sz,
 753                                 &data_in_dma, GFP_KERNEL);
 754                 if (!data_in) {
 755                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 756                             __LINE__, __func__);
 757                         ret = -ENOMEM;
 758                         mpt3sas_base_free_smid(ioc, smid);
 759                         goto out;
 760                 }
 761         }
 762
 763         psge = (void *)request + (karg.data_sge_offset*4);
 764
 765         /* send command to firmware */
 766         _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
 767
 768         init_completion(&ioc->ctl_cmds.done);
 769         switch (mpi_request->Function) {
 770         case MPI2_FUNCTION_NVME_ENCAPSULATED:
 771         {
 772                 nvme_encap_request = (Mpi26NVMeEncapsulatedRequest_t *)request;
 773                 /*
 774                  * Get the Physical Address of the sense buffer.
 775                  * Use Error Response buffer address field to hold the sense
 776                  * buffer address.
 777                  * Clear the internal sense buffer, which will potentially hold
 778                  * the Completion Queue Entry on return, or 0 if no Entry.
 779                  * Build the PRPs and set direction bits.
 780                  * Send the request.
 781                  */
 782                 nvme_encap_request->ErrorResponseBaseAddress =
 783                     cpu_to_le64(ioc->sense_dma & 0xFFFFFFFF00000000UL);
 784                 nvme_encap_request->ErrorResponseBaseAddress |=
 785                    cpu_to_le64(le32_to_cpu(
 786                    mpt3sas_base_get_sense_buffer_dma(ioc, smid)));
 787                 nvme_encap_request->ErrorResponseAllocationLength =
 788                                         cpu_to_le16(NVME_ERROR_RESPONSE_SIZE);
 789                 memset(ioc->ctl_cmds.sense, 0, NVME_ERROR_RESPONSE_SIZE);
 790                 ioc->build_nvme_prp(ioc, smid, nvme_encap_request,
 791                     data_out_dma, data_out_sz, data_in_dma, data_in_sz);
 792                 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
 793                         dtmprintk(ioc,
 794                                   ioc_info(ioc, "handle(0x%04x): ioctl failed due to device removal in progress\n",
 795                                            device_handle));
 796                         mpt3sas_base_free_smid(ioc, smid);
 797                         ret = -EINVAL;
 798                         goto out;
 799                 }
 800                 mpt3sas_base_put_smid_nvme_encap(ioc, smid);
 801                 break;
 802         }
 803         case MPI2_FUNCTION_SCSI_IO_REQUEST:
 804         case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
 805         {
 806                 Mpi2SCSIIORequest_t *scsiio_request =
 807                     (Mpi2SCSIIORequest_t *)request;
 808                 scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
 809                 scsiio_request->SenseBufferLowAddress =
 810                     mpt3sas_base_get_sense_buffer_dma(ioc, smid);
 811                 memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
 812                 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
 813                         dtmprintk(ioc,
 814                                   ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n",
 815                                            device_handle));
 816                         mpt3sas_base_free_smid(ioc, smid);
 817                         ret = -EINVAL;
 818                         goto out;
 819                 }
 820                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
 821                     data_in_dma, data_in_sz);
 822                 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
 823                         ioc->put_smid_scsi_io(ioc, smid, device_handle);
 824                 else
 825                         mpt3sas_base_put_smid_default(ioc, smid);
 826                 break;
 827         }
 828         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 829         {
 830                 Mpi2SCSITaskManagementRequest_t *tm_request =
 831                     (Mpi2SCSITaskManagementRequest_t *)request;
 832
 833                 dtmprintk(ioc,
 834                           ioc_info(ioc, "TASK_MGMT: handle(0x%04x), task_type(0x%02x)\n",
 835                                    le16_to_cpu(tm_request->DevHandle),
 836                                    tm_request->TaskType));
 837                 ioc->got_task_abort_from_ioctl = 1;
 838                 if (tm_request->TaskType ==
 839                     MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
 840                     tm_request->TaskType ==
 841                     MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
 842                         if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
 843                                 mpt3sas_base_free_smid(ioc, smid);
 844                                 ioc->got_task_abort_from_ioctl = 0;
 845                                 goto out;
 846                         }
 847                 }
 848                 ioc->got_task_abort_from_ioctl = 0;
 849
 850                 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
 851                         dtmprintk(ioc,
 852                                   ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n",
 853                                            device_handle));
 854                         mpt3sas_base_free_smid(ioc, smid);
 855                         ret = -EINVAL;
 856                         goto out;
 857                 }
 858                 mpt3sas_scsih_set_tm_flag(ioc, le16_to_cpu(
 859                     tm_request->DevHandle));
 860                 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
 861                     data_in_dma, data_in_sz);
 862                 mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
 863                 break;
 864         }
 865         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 866         {
 867                 Mpi2SmpPassthroughRequest_t *smp_request =
 868                     (Mpi2SmpPassthroughRequest_t *)mpi_request;
 869                 u8 *data;
 870
 871                 /* ioc determines which port to use */
 872                 smp_request->PhysicalPort = 0xFF;
 873                 if (smp_request->PassthroughFlags &
 874                     MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
 875                         data = (u8 *)&smp_request->SGL;
 876                 else {
 877                         if (unlikely(data_out == NULL)) {
 878                                 pr_err("failure at %s:%d/%s()!\n",
 879                                     __FILE__, __LINE__, __func__);
 880                                 mpt3sas_base_free_smid(ioc, smid);
 881                                 ret = -EINVAL;
 882                                 goto out;
 883                         }
 884                         data = data_out;
 885                 }
 886
 887                 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
 888                         ioc->ioc_link_reset_in_progress = 1;
 889                         ioc->ignore_loginfos = 1;
 890                 }
 891                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
 892                     data_in_sz);
 893                 mpt3sas_base_put_smid_default(ioc, smid);
 894                 break;
 895         }
 896         case MPI2_FUNCTION_SATA_PASSTHROUGH:
 897         {
 898                 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
 899                         dtmprintk(ioc,
 900                                   ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n",
 901                                            device_handle));
 902                         mpt3sas_base_free_smid(ioc, smid);
 903                         ret = -EINVAL;
 904                         goto out;
 905                 }
 906                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
 907                     data_in_sz);
 908                 mpt3sas_base_put_smid_default(ioc, smid);
 909                 break;
 910         }
 911         case MPI2_FUNCTION_FW_DOWNLOAD:
 912         case MPI2_FUNCTION_FW_UPLOAD:
 913         {
 914                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
 915                     data_in_sz);
 916                 mpt3sas_base_put_smid_default(ioc, smid);
 917                 break;
 918         }
 919         case MPI2_FUNCTION_TOOLBOX:
 920         {
 921                 Mpi2ToolboxCleanRequest_t *toolbox_request =
 922                         (Mpi2ToolboxCleanRequest_t *)mpi_request;
 923
 924                 if (toolbox_request->Tool == MPI2_TOOLBOX_DIAGNOSTIC_CLI_TOOL) {
 925                         ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
 926                                 data_in_dma, data_in_sz);
 927                 } else {
 928                         ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
 929                                 data_in_dma, data_in_sz);
 930                 }
 931                 mpt3sas_base_put_smid_default(ioc, smid);
 932                 break;
 933         }
 934         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 935         {
 936                 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
 937                     (Mpi2SasIoUnitControlRequest_t *)mpi_request;
 938
 939                 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
 940                     || sasiounit_request->Operation ==
 941                     MPI2_SAS_OP_PHY_LINK_RESET) {
 942                         ioc->ioc_link_reset_in_progress = 1;
 943                         ioc->ignore_loginfos = 1;
 944                 }
 945                 /* drop to default case for posting the request */
 946         }
 947                 /* fall through */
 948         default:
 949                 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
 950                     data_in_dma, data_in_sz);
 951                 mpt3sas_base_put_smid_default(ioc, smid);
 952                 break;
 953         }
 954
 955         if (karg.timeout < MPT3_IOCTL_DEFAULT_TIMEOUT)
 956                 timeout = MPT3_IOCTL_DEFAULT_TIMEOUT;
 957         else
 958                 timeout = karg.timeout;
 959         wait_for_completion_timeout(&ioc->ctl_cmds.done, timeout*HZ);
 960         if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
 961                 Mpi2SCSITaskManagementRequest_t *tm_request =
 962                     (Mpi2SCSITaskManagementRequest_t *)mpi_request;
 963                 mpt3sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
 964                     tm_request->DevHandle));
 965                 mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
 966         } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
 967             mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
 968                 ioc->ioc_link_reset_in_progress) {
 969                 ioc->ioc_link_reset_in_progress = 0;
 970                 ioc->ignore_loginfos = 0;
 971         }
 972         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
 973                 issue_reset =
 974                         mpt3sas_base_check_cmd_timeout(ioc,
 975                                 ioc->ctl_cmds.status, mpi_request,
 976                                 karg.data_sge_offset);
 977                 goto issue_host_reset;
 978         }
 979
 980         mpi_reply = ioc->ctl_cmds.reply;
 981
 982         if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
 983             (ioc->logging_level & MPT_DEBUG_TM)) {
 984                 Mpi2SCSITaskManagementReply_t *tm_reply =
 985                     (Mpi2SCSITaskManagementReply_t *)mpi_reply;
 986
 987                 ioc_info(ioc, "TASK_MGMT: IOCStatus(0x%04x), IOCLogInfo(0x%08x), TerminationCount(0x%08x)\n",
 988                          le16_to_cpu(tm_reply->IOCStatus),
 989                          le32_to_cpu(tm_reply->IOCLogInfo),
 990                          le32_to_cpu(tm_reply->TerminationCount));
 991         }
 992
 993         /* copy out xdata to user */
 994         if (data_in_sz) {
 995                 if (copy_to_user(karg.data_in_buf_ptr, data_in,
 996                     data_in_sz)) {
 997                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 998                             __LINE__, __func__);
 999                         ret = -ENODATA;
1000                         goto out;
1001                 }
1002         }
1003
1004         /* copy out reply message frame to user */
1005         if (karg.max_reply_bytes) {
1006                 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
1007                 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
1008                     sz)) {
1009                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
1010                             __LINE__, __func__);
1011                         ret = -ENODATA;
1012                         goto out;
1013                 }
1014         }
1015
1016         /* copy out sense/NVMe Error Response to user */
1017         if (karg.max_sense_bytes && (mpi_request->Function ==
1018             MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
1019             MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH || mpi_request->Function ==
1020             MPI2_FUNCTION_NVME_ENCAPSULATED)) {
1021                 if (karg.sense_data_ptr == NULL) {
1022                         ioc_info(ioc, "Response buffer provided by application is NULL; Response data will not be returned\n");
1023                         goto out;
1024                 }
1025                 sz_arg = (mpi_request->Function ==
1026                 MPI2_FUNCTION_NVME_ENCAPSULATED) ? NVME_ERROR_RESPONSE_SIZE :
1027                                                         SCSI_SENSE_BUFFERSIZE;
1028                 sz = min_t(u32, karg.max_sense_bytes, sz_arg);
1029                 if (copy_to_user(karg.sense_data_ptr, ioc->ctl_cmds.sense,
1030                     sz)) {
1031                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
1032                                 __LINE__, __func__);
1033                         ret = -ENODATA;
1034                         goto out;
1035                 }
1036         }
1037
1038  issue_host_reset:
1039         if (issue_reset) {
1040                 ret = -ENODATA;
1041                 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
1042                     mpi_request->Function ==
1043                     MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
1044                     mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH)) {
1045                         ioc_info(ioc, "issue target reset: handle = (0x%04x)\n",
1046                                  le16_to_cpu(mpi_request->FunctionDependent1));
1047                         mpt3sas_halt_firmware(ioc);
1048                         pcie_device = mpt3sas_get_pdev_by_handle(ioc,
1049                                 le16_to_cpu(mpi_request->FunctionDependent1));
1050                         if (pcie_device && (!ioc->tm_custom_handling))
1051                                 mpt3sas_scsih_issue_locked_tm(ioc,
1052                                   le16_to_cpu(mpi_request->FunctionDependent1),
1053                                   0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
1054                                   0, pcie_device->reset_timeout,
1055                                   tr_method);
1056                         else
1057                                 mpt3sas_scsih_issue_locked_tm(ioc,
1058                                   le16_to_cpu(mpi_request->FunctionDependent1),
1059                                   0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
1060                                   0, 30, MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET);
1061                 } else
1062                         mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1063         }
1064
1065  out:
1066         if (pcie_device)
1067                 pcie_device_put(pcie_device);
1068
1069         /* free memory associated with sg buffers */
1070         if (data_in)
1071                 dma_free_coherent(&ioc->pdev->dev, data_in_sz, data_in,
1072                     data_in_dma);
1073
1074         if (data_out)
1075                 dma_free_coherent(&ioc->pdev->dev, data_out_sz, data_out,
1076                     data_out_dma);
1077
1078         kfree(mpi_request);
1079         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1080         return ret;
1081 }
1082
1083 /**
1084  * _ctl_getiocinfo - main handler for MPT3IOCINFO opcode
1085  * @ioc: per adapter object
1086  * @arg: user space buffer containing ioctl content
1087  */
1088 static long
1089 _ctl_getiocinfo(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1090 {
1091         struct mpt3_ioctl_iocinfo karg;
1092
1093         dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
1094                                  __func__));
1095
1096         memset(&karg, 0 , sizeof(karg));
1097         if (ioc->pfacts)
1098                 karg.port_number = ioc->pfacts[0].PortNumber;
1099         karg.hw_rev = ioc->pdev->revision;
1100         karg.pci_id = ioc->pdev->device;
1101         karg.subsystem_device = ioc->pdev->subsystem_device;
1102         karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
1103         karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
1104         karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
1105         karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
1106         karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
1107         karg.firmware_version = ioc->facts.FWVersion.Word;
1108         strcpy(karg.driver_version, ioc->driver_name);
1109         strcat(karg.driver_version, "-");
1110         switch  (ioc->hba_mpi_version_belonged) {
1111         case MPI2_VERSION:
1112                 if (ioc->is_warpdrive)
1113                         karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200;
1114                 else
1115                         karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
1116                 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
1117                 break;
1118         case MPI25_VERSION:
1119         case MPI26_VERSION:
1120                 if (ioc->is_gen35_ioc)
1121                         karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS35;
1122                 else
1123                         karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS3;
1124                 strcat(karg.driver_version, MPT3SAS_DRIVER_VERSION);
1125                 break;
1126         }
1127         karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
1128
1129         if (copy_to_user(arg, &karg, sizeof(karg))) {
1130                 pr_err("failure at %s:%d/%s()!\n",
1131                     __FILE__, __LINE__, __func__);
1132                 return -EFAULT;
1133         }
1134         return 0;
1135 }
1136
1137 /**
1138  * _ctl_eventquery - main handler for MPT3EVENTQUERY opcode
1139  * @ioc: per adapter object
1140  * @arg: user space buffer containing ioctl content
1141  */
1142 static long
1143 _ctl_eventquery(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1144 {
1145         struct mpt3_ioctl_eventquery karg;
1146
1147         if (copy_from_user(&karg, arg, sizeof(karg))) {
1148                 pr_err("failure at %s:%d/%s()!\n",
1149                     __FILE__, __LINE__, __func__);
1150                 return -EFAULT;
1151         }
1152
1153         dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
1154                                  __func__));
1155
1156         karg.event_entries = MPT3SAS_CTL_EVENT_LOG_SIZE;
1157         memcpy(karg.event_types, ioc->event_type,
1158             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1159
1160         if (copy_to_user(arg, &karg, sizeof(karg))) {
1161                 pr_err("failure at %s:%d/%s()!\n",
1162                     __FILE__, __LINE__, __func__);
1163                 return -EFAULT;
1164         }
1165         return 0;
1166 }
1167
1168 /**
1169  * _ctl_eventenable - main handler for MPT3EVENTENABLE opcode
1170  * @ioc: per adapter object
1171  * @arg: user space buffer containing ioctl content
1172  */
1173 static long
1174 _ctl_eventenable(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1175 {
1176         struct mpt3_ioctl_eventenable karg;
1177
1178         if (copy_from_user(&karg, arg, sizeof(karg))) {
1179                 pr_err("failure at %s:%d/%s()!\n",
1180                     __FILE__, __LINE__, __func__);
1181                 return -EFAULT;
1182         }
1183
1184         dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
1185                                  __func__));
1186
1187         memcpy(ioc->event_type, karg.event_types,
1188             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1189         mpt3sas_base_validate_event_type(ioc, ioc->event_type);
1190
1191         if (ioc->event_log)
1192                 return 0;
1193         /* initialize event_log */
1194         ioc->event_context = 0;
1195         ioc->aen_event_read_flag = 0;
1196         ioc->event_log = kcalloc(MPT3SAS_CTL_EVENT_LOG_SIZE,
1197             sizeof(struct MPT3_IOCTL_EVENTS), GFP_KERNEL);
1198         if (!ioc->event_log) {
1199                 pr_err("failure at %s:%d/%s()!\n",
1200                     __FILE__, __LINE__, __func__);
1201                 return -ENOMEM;
1202         }
1203         return 0;
1204 }
1205
1206 /**
1207  * _ctl_eventreport - main handler for MPT3EVENTREPORT opcode
1208  * @ioc: per adapter object
1209  * @arg: user space buffer containing ioctl content
1210  */
1211 static long
1212 _ctl_eventreport(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1213 {
1214         struct mpt3_ioctl_eventreport karg;
1215         u32 number_bytes, max_events, max;
1216         struct mpt3_ioctl_eventreport __user *uarg = arg;
1217
1218         if (copy_from_user(&karg, arg, sizeof(karg))) {
1219                 pr_err("failure at %s:%d/%s()!\n",
1220                     __FILE__, __LINE__, __func__);
1221                 return -EFAULT;
1222         }
1223
1224         dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
1225                                  __func__));
1226
1227         number_bytes = karg.hdr.max_data_size -
1228             sizeof(struct mpt3_ioctl_header);
1229         max_events = number_bytes/sizeof(struct MPT3_IOCTL_EVENTS);
1230         max = min_t(u32, MPT3SAS_CTL_EVENT_LOG_SIZE, max_events);
1231
1232         /* If fewer than 1 event is requested, there must have
1233          * been some type of error.
1234          */
1235         if (!max || !ioc->event_log)
1236                 return -ENODATA;
1237
1238         number_bytes = max * sizeof(struct MPT3_IOCTL_EVENTS);
1239         if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1240                 pr_err("failure at %s:%d/%s()!\n",
1241                     __FILE__, __LINE__, __func__);
1242                 return -EFAULT;
1243         }
1244
1245         /* reset flag so SIGIO can restart */
1246         ioc->aen_event_read_flag = 0;
1247         return 0;
1248 }
1249
1250 /**
1251  * _ctl_do_reset - main handler for MPT3HARDRESET opcode
1252  * @ioc: per adapter object
1253  * @arg: user space buffer containing ioctl content
1254  */
1255 static long
1256 _ctl_do_reset(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1257 {
1258         struct mpt3_ioctl_diag_reset karg;
1259         int retval;
1260
1261         if (copy_from_user(&karg, arg, sizeof(karg))) {
1262                 pr_err("failure at %s:%d/%s()!\n",
1263                     __FILE__, __LINE__, __func__);
1264                 return -EFAULT;
1265         }
1266
1267         if (ioc->shost_recovery || ioc->pci_error_recovery ||
1268             ioc->is_driver_loading)
1269                 return -EAGAIN;
1270
1271         dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
1272                                  __func__));
1273
1274         retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1275         ioc_info(ioc, "host reset: %s\n", ((!retval) ? "SUCCESS" : "FAILED"));
1276         return 0;
1277 }
1278
1279 /**
1280  * _ctl_btdh_search_sas_device - searching for sas device
1281  * @ioc: per adapter object
1282  * @btdh: btdh ioctl payload
1283  */
1284 static int
1285 _ctl_btdh_search_sas_device(struct MPT3SAS_ADAPTER *ioc,
1286         struct mpt3_ioctl_btdh_mapping *btdh)
1287 {
1288         struct _sas_device *sas_device;
1289         unsigned long flags;
1290         int rc = 0;
1291
1292         if (list_empty(&ioc->sas_device_list))
1293                 return rc;
1294
1295         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1296         list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1297                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1298                     btdh->handle == sas_device->handle) {
1299                         btdh->bus = sas_device->channel;
1300                         btdh->id = sas_device->id;
1301                         rc = 1;
1302                         goto out;
1303                 } else if (btdh->bus == sas_device->channel && btdh->id ==
1304                     sas_device->id && btdh->handle == 0xFFFF) {
1305                         btdh->handle = sas_device->handle;
1306                         rc = 1;
1307                         goto out;
1308                 }
1309         }
1310  out:
1311         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1312         return rc;
1313 }
1314
1315 /**
1316  * _ctl_btdh_search_pcie_device - searching for pcie device
1317  * @ioc: per adapter object
1318  * @btdh: btdh ioctl payload
1319  */
1320 static int
1321 _ctl_btdh_search_pcie_device(struct MPT3SAS_ADAPTER *ioc,
1322         struct mpt3_ioctl_btdh_mapping *btdh)
1323 {
1324         struct _pcie_device *pcie_device;
1325         unsigned long flags;
1326         int rc = 0;
1327
1328         if (list_empty(&ioc->pcie_device_list))
1329                 return rc;
1330
1331         spin_lock_irqsave(&ioc->pcie_device_lock, flags);
1332         list_for_each_entry(pcie_device, &ioc->pcie_device_list, list) {
1333                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1334                            btdh->handle == pcie_device->handle) {
1335                         btdh->bus = pcie_device->channel;
1336                         btdh->id = pcie_device->id;
1337                         rc = 1;
1338                         goto out;
1339                 } else if (btdh->bus == pcie_device->channel && btdh->id ==
1340                            pcie_device->id && btdh->handle == 0xFFFF) {
1341                         btdh->handle = pcie_device->handle;
1342                         rc = 1;
1343                         goto out;
1344                 }
1345         }
1346  out:
1347         spin_unlock_irqrestore(&ioc->pcie_device_lock, flags);
1348         return rc;
1349 }
1350
1351 /**
1352  * _ctl_btdh_search_raid_device - searching for raid device
1353  * @ioc: per adapter object
1354  * @btdh: btdh ioctl payload
1355  */
1356 static int
1357 _ctl_btdh_search_raid_device(struct MPT3SAS_ADAPTER *ioc,
1358         struct mpt3_ioctl_btdh_mapping *btdh)
1359 {
1360         struct _raid_device *raid_device;
1361         unsigned long flags;
1362         int rc = 0;
1363
1364         if (list_empty(&ioc->raid_device_list))
1365                 return rc;
1366
1367         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1368         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1369                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1370                     btdh->handle == raid_device->handle) {
1371                         btdh->bus = raid_device->channel;
1372                         btdh->id = raid_device->id;
1373                         rc = 1;
1374                         goto out;
1375                 } else if (btdh->bus == raid_device->channel && btdh->id ==
1376                     raid_device->id && btdh->handle == 0xFFFF) {
1377                         btdh->handle = raid_device->handle;
1378                         rc = 1;
1379                         goto out;
1380                 }
1381         }
1382  out:
1383         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1384         return rc;
1385 }
1386
1387 /**
1388  * _ctl_btdh_mapping - main handler for MPT3BTDHMAPPING opcode
1389  * @ioc: per adapter object
1390  * @arg: user space buffer containing ioctl content
1391  */
1392 static long
1393 _ctl_btdh_mapping(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1394 {
1395         struct mpt3_ioctl_btdh_mapping karg;
1396         int rc;
1397
1398         if (copy_from_user(&karg, arg, sizeof(karg))) {
1399                 pr_err("failure at %s:%d/%s()!\n",
1400                     __FILE__, __LINE__, __func__);
1401                 return -EFAULT;
1402         }
1403
1404         dctlprintk(ioc, ioc_info(ioc, "%s\n",
1405                                  __func__));
1406
1407         rc = _ctl_btdh_search_sas_device(ioc, &karg);
1408         if (!rc)
1409                 rc = _ctl_btdh_search_pcie_device(ioc, &karg);
1410         if (!rc)
1411                 _ctl_btdh_search_raid_device(ioc, &karg);
1412
1413         if (copy_to_user(arg, &karg, sizeof(karg))) {
1414                 pr_err("failure at %s:%d/%s()!\n",
1415                     __FILE__, __LINE__, __func__);
1416                 return -EFAULT;
1417         }
1418         return 0;
1419 }
1420
1421 /**
1422  * _ctl_diag_capability - return diag buffer capability
1423  * @ioc: per adapter object
1424  * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1425  *
1426  * returns 1 when diag buffer support is enabled in firmware
1427  */
1428 static u8
1429 _ctl_diag_capability(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type)
1430 {
1431         u8 rc = 0;
1432
1433         switch (buffer_type) {
1434         case MPI2_DIAG_BUF_TYPE_TRACE:
1435                 if (ioc->facts.IOCCapabilities &
1436                     MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1437                         rc = 1;
1438                 break;
1439         case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1440                 if (ioc->facts.IOCCapabilities &
1441                     MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1442                         rc = 1;
1443                 break;
1444         case MPI2_DIAG_BUF_TYPE_EXTENDED:
1445                 if (ioc->facts.IOCCapabilities &
1446                     MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
1447                         rc = 1;
1448         }
1449
1450         return rc;
1451 }
1452
1453
1454 /**
1455  * _ctl_diag_register_2 - wrapper for registering diag buffer support
1456  * @ioc: per adapter object
1457  * @diag_register: the diag_register struct passed in from user space
1458  *
1459  */
1460 static long
1461 _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc,
1462         struct mpt3_diag_register *diag_register)
1463 {
1464         int rc, i;
1465         void *request_data = NULL;
1466         dma_addr_t request_data_dma;
1467         u32 request_data_sz = 0;
1468         Mpi2DiagBufferPostRequest_t *mpi_request;
1469         Mpi2DiagBufferPostReply_t *mpi_reply;
1470         u8 buffer_type;
1471         u16 smid;
1472         u16 ioc_status;
1473         u32 ioc_state;
1474         u8 issue_reset = 0;
1475
1476         dctlprintk(ioc, ioc_info(ioc, "%s\n",
1477                                  __func__));
1478
1479         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1480         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1481                 ioc_err(ioc, "%s: failed due to ioc not operational\n",
1482                         __func__);
1483                 rc = -EAGAIN;
1484                 goto out;
1485         }
1486
1487         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
1488                 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
1489                 rc = -EAGAIN;
1490                 goto out;
1491         }
1492
1493         buffer_type = diag_register->buffer_type;
1494         if (!_ctl_diag_capability(ioc, buffer_type)) {
1495                 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
1496                         __func__, buffer_type);
1497                 return -EPERM;
1498         }
1499
1500         if (ioc->diag_buffer_status[buffer_type] &
1501             MPT3_DIAG_BUFFER_IS_REGISTERED) {
1502                 ioc_err(ioc, "%s: already has a registered buffer for buffer_type(0x%02x)\n",
1503                         __func__, buffer_type);
1504                 return -EINVAL;
1505         }
1506
1507         if (diag_register->requested_buffer_size % 4)  {
1508                 ioc_err(ioc, "%s: the requested_buffer_size is not 4 byte aligned\n",
1509                         __func__);
1510                 return -EINVAL;
1511         }
1512
1513         smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1514         if (!smid) {
1515                 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1516                 rc = -EAGAIN;
1517                 goto out;
1518         }
1519
1520         rc = 0;
1521         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
1522         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1523         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1524         ioc->ctl_cmds.smid = smid;
1525
1526         request_data = ioc->diag_buffer[buffer_type];
1527         request_data_sz = diag_register->requested_buffer_size;
1528         ioc->unique_id[buffer_type] = diag_register->unique_id;
1529         ioc->diag_buffer_status[buffer_type] = 0;
1530         memcpy(ioc->product_specific[buffer_type],
1531             diag_register->product_specific, MPT3_PRODUCT_SPECIFIC_DWORDS);
1532         ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
1533
1534         if (request_data) {
1535                 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1536                 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1537                         dma_free_coherent(&ioc->pdev->dev,
1538                                         ioc->diag_buffer_sz[buffer_type],
1539                                         request_data, request_data_dma);
1540                         request_data = NULL;
1541                 }
1542         }
1543
1544         if (request_data == NULL) {
1545                 ioc->diag_buffer_sz[buffer_type] = 0;
1546                 ioc->diag_buffer_dma[buffer_type] = 0;
1547                 request_data = dma_alloc_coherent(&ioc->pdev->dev,
1548                                 request_data_sz, &request_data_dma, GFP_KERNEL);
1549                 if (request_data == NULL) {
1550                         ioc_err(ioc, "%s: failed allocating memory for diag buffers, requested size(%d)\n",
1551                                 __func__, request_data_sz);
1552                         mpt3sas_base_free_smid(ioc, smid);
1553                         return -ENOMEM;
1554                 }
1555                 ioc->diag_buffer[buffer_type] = request_data;
1556                 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1557                 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1558         }
1559
1560         mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1561         mpi_request->BufferType = diag_register->buffer_type;
1562         mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
1563         mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1564         mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1565         mpi_request->VF_ID = 0; /* TODO */
1566         mpi_request->VP_ID = 0;
1567
1568         dctlprintk(ioc,
1569                    ioc_info(ioc, "%s: diag_buffer(0x%p), dma(0x%llx), sz(%d)\n",
1570                             __func__, request_data,
1571                             (unsigned long long)request_data_dma,
1572                             le32_to_cpu(mpi_request->BufferLength)));
1573
1574         for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
1575                 mpi_request->ProductSpecific[i] =
1576                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
1577
1578         init_completion(&ioc->ctl_cmds.done);
1579         mpt3sas_base_put_smid_default(ioc, smid);
1580         wait_for_completion_timeout(&ioc->ctl_cmds.done,
1581             MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
1582
1583         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
1584                 issue_reset =
1585                         mpt3sas_base_check_cmd_timeout(ioc,
1586                                 ioc->ctl_cmds.status, mpi_request,
1587                                 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1588                 goto issue_host_reset;
1589         }
1590
1591         /* process the completed Reply Message Frame */
1592         if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
1593                 ioc_err(ioc, "%s: no reply message\n", __func__);
1594                 rc = -EFAULT;
1595                 goto out;
1596         }
1597
1598         mpi_reply = ioc->ctl_cmds.reply;
1599         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1600
1601         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1602                 ioc->diag_buffer_status[buffer_type] |=
1603                         MPT3_DIAG_BUFFER_IS_REGISTERED;
1604                 dctlprintk(ioc, ioc_info(ioc, "%s: success\n", __func__));
1605         } else {
1606                 ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
1607                          __func__,
1608                          ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1609                 rc = -EFAULT;
1610         }
1611
1612  issue_host_reset:
1613         if (issue_reset)
1614                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1615
1616  out:
1617
1618         if (rc && request_data)
1619                 dma_free_coherent(&ioc->pdev->dev, request_data_sz,
1620                     request_data, request_data_dma);
1621
1622         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1623         return rc;
1624 }
1625
1626 /**
1627  * mpt3sas_enable_diag_buffer - enabling diag_buffers support driver load time
1628  * @ioc: per adapter object
1629  * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
1630  *
1631  * This is called when command line option diag_buffer_enable is enabled
1632  * at driver load time.
1633  */
1634 void
1635 mpt3sas_enable_diag_buffer(struct MPT3SAS_ADAPTER *ioc, u8 bits_to_register)
1636 {
1637         struct mpt3_diag_register diag_register;
1638
1639         memset(&diag_register, 0, sizeof(struct mpt3_diag_register));
1640
1641         if (bits_to_register & 1) {
1642                 ioc_info(ioc, "registering trace buffer support\n");
1643                 ioc->diag_trigger_master.MasterData =
1644                     (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET);
1645                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
1646                 /* register for 2MB buffers  */
1647                 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1648                 diag_register.unique_id = 0x7075900;
1649                 _ctl_diag_register_2(ioc,  &diag_register);
1650         }
1651
1652         if (bits_to_register & 2) {
1653                 ioc_info(ioc, "registering snapshot buffer support\n");
1654                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
1655                 /* register for 2MB buffers  */
1656                 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1657                 diag_register.unique_id = 0x7075901;
1658                 _ctl_diag_register_2(ioc,  &diag_register);
1659         }
1660
1661         if (bits_to_register & 4) {
1662                 ioc_info(ioc, "registering extended buffer support\n");
1663                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
1664                 /* register for 2MB buffers  */
1665                 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1666                 diag_register.unique_id = 0x7075901;
1667                 _ctl_diag_register_2(ioc,  &diag_register);
1668         }
1669 }
1670
1671 /**
1672  * _ctl_diag_register - application register with driver
1673  * @ioc: per adapter object
1674  * @arg: user space buffer containing ioctl content
1675  *
1676  * This will allow the driver to setup any required buffers that will be
1677  * needed by firmware to communicate with the driver.
1678  */
1679 static long
1680 _ctl_diag_register(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1681 {
1682         struct mpt3_diag_register karg;
1683         long rc;
1684
1685         if (copy_from_user(&karg, arg, sizeof(karg))) {
1686                 pr_err("failure at %s:%d/%s()!\n",
1687                     __FILE__, __LINE__, __func__);
1688                 return -EFAULT;
1689         }
1690
1691         rc = _ctl_diag_register_2(ioc, &karg);
1692         return rc;
1693 }
1694
1695 /**
1696  * _ctl_diag_unregister - application unregister with driver
1697  * @ioc: per adapter object
1698  * @arg: user space buffer containing ioctl content
1699  *
1700  * This will allow the driver to cleanup any memory allocated for diag
1701  * messages and to free up any resources.
1702  */
1703 static long
1704 _ctl_diag_unregister(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1705 {
1706         struct mpt3_diag_unregister karg;
1707         void *request_data;
1708         dma_addr_t request_data_dma;
1709         u32 request_data_sz;
1710         u8 buffer_type;
1711
1712         if (copy_from_user(&karg, arg, sizeof(karg))) {
1713                 pr_err("failure at %s:%d/%s()!\n",
1714                     __FILE__, __LINE__, __func__);
1715                 return -EFAULT;
1716         }
1717
1718         dctlprintk(ioc, ioc_info(ioc, "%s\n",
1719                                  __func__));
1720
1721         buffer_type = karg.unique_id & 0x000000ff;
1722         if (!_ctl_diag_capability(ioc, buffer_type)) {
1723                 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
1724                         __func__, buffer_type);
1725                 return -EPERM;
1726         }
1727
1728         if ((ioc->diag_buffer_status[buffer_type] &
1729             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1730                 ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n",
1731                         __func__, buffer_type);
1732                 return -EINVAL;
1733         }
1734         if ((ioc->diag_buffer_status[buffer_type] &
1735             MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
1736                 ioc_err(ioc, "%s: buffer_type(0x%02x) has not been released\n",
1737                         __func__, buffer_type);
1738                 return -EINVAL;
1739         }
1740
1741         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1742                 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
1743                         __func__, karg.unique_id);
1744                 return -EINVAL;
1745         }
1746
1747         request_data = ioc->diag_buffer[buffer_type];
1748         if (!request_data) {
1749                 ioc_err(ioc, "%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
1750                         __func__, buffer_type);
1751                 return -ENOMEM;
1752         }
1753
1754         request_data_sz = ioc->diag_buffer_sz[buffer_type];
1755         request_data_dma = ioc->diag_buffer_dma[buffer_type];
1756         dma_free_coherent(&ioc->pdev->dev, request_data_sz,
1757                         request_data, request_data_dma);
1758         ioc->diag_buffer[buffer_type] = NULL;
1759         ioc->diag_buffer_status[buffer_type] = 0;
1760         return 0;
1761 }
1762
1763 /**
1764  * _ctl_diag_query - query relevant info associated with diag buffers
1765  * @ioc: per adapter object
1766  * @arg: user space buffer containing ioctl content
1767  *
1768  * The application will send only buffer_type and unique_id.  Driver will
1769  * inspect unique_id first, if valid, fill in all the info.  If unique_id is
1770  * 0x00, the driver will return info specified by Buffer Type.
1771  */
1772 static long
1773 _ctl_diag_query(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1774 {
1775         struct mpt3_diag_query karg;
1776         void *request_data;
1777         int i;
1778         u8 buffer_type;
1779
1780         if (copy_from_user(&karg, arg, sizeof(karg))) {
1781                 pr_err("failure at %s:%d/%s()!\n",
1782                     __FILE__, __LINE__, __func__);
1783                 return -EFAULT;
1784         }
1785
1786         dctlprintk(ioc, ioc_info(ioc, "%s\n",
1787                                  __func__));
1788
1789         karg.application_flags = 0;
1790         buffer_type = karg.buffer_type;
1791
1792         if (!_ctl_diag_capability(ioc, buffer_type)) {
1793                 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
1794                         __func__, buffer_type);
1795                 return -EPERM;
1796         }
1797
1798         if ((ioc->diag_buffer_status[buffer_type] &
1799             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1800                 ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n",
1801                         __func__, buffer_type);
1802                 return -EINVAL;
1803         }
1804
1805         if (karg.unique_id & 0xffffff00) {
1806                 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1807                         ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
1808                                 __func__, karg.unique_id);
1809                         return -EINVAL;
1810                 }
1811         }
1812
1813         request_data = ioc->diag_buffer[buffer_type];
1814         if (!request_data) {
1815                 ioc_err(ioc, "%s: doesn't have buffer for buffer_type(0x%02x)\n",
1816                         __func__, buffer_type);
1817                 return -ENOMEM;
1818         }
1819
1820         if (ioc->diag_buffer_status[buffer_type] & MPT3_DIAG_BUFFER_IS_RELEASED)
1821                 karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED |
1822                     MPT3_APP_FLAGS_BUFFER_VALID);
1823         else
1824                 karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED |
1825                     MPT3_APP_FLAGS_BUFFER_VALID |
1826                     MPT3_APP_FLAGS_FW_BUFFER_ACCESS);
1827
1828         for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
1829                 karg.product_specific[i] =
1830                     ioc->product_specific[buffer_type][i];
1831
1832         karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1833         karg.driver_added_buffer_size = 0;
1834         karg.unique_id = ioc->unique_id[buffer_type];
1835         karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1836
1837         if (copy_to_user(arg, &karg, sizeof(struct mpt3_diag_query))) {
1838                 ioc_err(ioc, "%s: unable to write mpt3_diag_query data @ %p\n",
1839                         __func__, arg);
1840                 return -EFAULT;
1841         }
1842         return 0;
1843 }
1844
1845 /**
1846  * mpt3sas_send_diag_release - Diag Release Message
1847  * @ioc: per adapter object
1848  * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1849  * @issue_reset: specifies whether host reset is required.
1850  *
1851  */
1852 int
1853 mpt3sas_send_diag_release(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type,
1854         u8 *issue_reset)
1855 {
1856         Mpi2DiagReleaseRequest_t *mpi_request;
1857         Mpi2DiagReleaseReply_t *mpi_reply;
1858         u16 smid;
1859         u16 ioc_status;
1860         u32 ioc_state;
1861         int rc;
1862
1863         dctlprintk(ioc, ioc_info(ioc, "%s\n",
1864                                  __func__));
1865
1866         rc = 0;
1867         *issue_reset = 0;
1868
1869         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1870         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1871                 if (ioc->diag_buffer_status[buffer_type] &
1872                     MPT3_DIAG_BUFFER_IS_REGISTERED)
1873                         ioc->diag_buffer_status[buffer_type] |=
1874                             MPT3_DIAG_BUFFER_IS_RELEASED;
1875                 dctlprintk(ioc,
1876                            ioc_info(ioc, "%s: skipping due to FAULT state\n",
1877                                     __func__));
1878                 rc = -EAGAIN;
1879                 goto out;
1880         }
1881
1882         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
1883                 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
1884                 rc = -EAGAIN;
1885                 goto out;
1886         }
1887
1888         smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1889         if (!smid) {
1890                 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1891                 rc = -EAGAIN;
1892                 goto out;
1893         }
1894
1895         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
1896         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1897         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1898         ioc->ctl_cmds.smid = smid;
1899
1900         mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1901         mpi_request->BufferType = buffer_type;
1902         mpi_request->VF_ID = 0; /* TODO */
1903         mpi_request->VP_ID = 0;
1904
1905         init_completion(&ioc->ctl_cmds.done);
1906         mpt3sas_base_put_smid_default(ioc, smid);
1907         wait_for_completion_timeout(&ioc->ctl_cmds.done,
1908             MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
1909
1910         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
1911                 *issue_reset = mpt3sas_base_check_cmd_timeout(ioc,
1912                                 ioc->ctl_cmds.status, mpi_request,
1913                                 sizeof(Mpi2DiagReleaseRequest_t)/4);
1914                 rc = -EFAULT;
1915                 goto out;
1916         }
1917
1918         /* process the completed Reply Message Frame */
1919         if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
1920                 ioc_err(ioc, "%s: no reply message\n", __func__);
1921                 rc = -EFAULT;
1922                 goto out;
1923         }
1924
1925         mpi_reply = ioc->ctl_cmds.reply;
1926         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1927
1928         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1929                 ioc->diag_buffer_status[buffer_type] |=
1930                     MPT3_DIAG_BUFFER_IS_RELEASED;
1931                 dctlprintk(ioc, ioc_info(ioc, "%s: success\n", __func__));
1932         } else {
1933                 ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
1934                          __func__,
1935                          ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1936                 rc = -EFAULT;
1937         }
1938
1939  out:
1940         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1941         return rc;
1942 }
1943
1944 /**
1945  * _ctl_diag_release - request to send Diag Release Message to firmware
1946  * @ioc: ?
1947  * @arg: user space buffer containing ioctl content
1948  *
1949  * This allows ownership of the specified buffer to returned to the driver,
1950  * allowing an application to read the buffer without fear that firmware is
1951  * overwriting information in the buffer.
1952  */
1953 static long
1954 _ctl_diag_release(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1955 {
1956         struct mpt3_diag_release karg;
1957         void *request_data;
1958         int rc;
1959         u8 buffer_type;
1960         u8 issue_reset = 0;
1961
1962         if (copy_from_user(&karg, arg, sizeof(karg))) {
1963                 pr_err("failure at %s:%d/%s()!\n",
1964                     __FILE__, __LINE__, __func__);
1965                 return -EFAULT;
1966         }
1967
1968         dctlprintk(ioc, ioc_info(ioc, "%s\n",
1969                                  __func__));
1970
1971         buffer_type = karg.unique_id & 0x000000ff;
1972         if (!_ctl_diag_capability(ioc, buffer_type)) {
1973                 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
1974                         __func__, buffer_type);
1975                 return -EPERM;
1976         }
1977
1978         if ((ioc->diag_buffer_status[buffer_type] &
1979             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1980                 ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n",
1981                         __func__, buffer_type);
1982                 return -EINVAL;
1983         }
1984
1985         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1986                 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
1987                         __func__, karg.unique_id);
1988                 return -EINVAL;
1989         }
1990
1991         if (ioc->diag_buffer_status[buffer_type] &
1992             MPT3_DIAG_BUFFER_IS_RELEASED) {
1993                 ioc_err(ioc, "%s: buffer_type(0x%02x) is already released\n",
1994                         __func__, buffer_type);
1995                 return 0;
1996         }
1997
1998         request_data = ioc->diag_buffer[buffer_type];
1999
2000         if (!request_data) {
2001                 ioc_err(ioc, "%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
2002                         __func__, buffer_type);
2003                 return -ENOMEM;
2004         }
2005
2006         /* buffers were released by due to host reset */
2007         if ((ioc->diag_buffer_status[buffer_type] &
2008             MPT3_DIAG_BUFFER_IS_DIAG_RESET)) {
2009                 ioc->diag_buffer_status[buffer_type] |=
2010                     MPT3_DIAG_BUFFER_IS_RELEASED;
2011                 ioc->diag_buffer_status[buffer_type] &=
2012                     ~MPT3_DIAG_BUFFER_IS_DIAG_RESET;
2013                 ioc_err(ioc, "%s: buffer_type(0x%02x) was released due to host reset\n",
2014                         __func__, buffer_type);
2015                 return 0;
2016         }
2017
2018         rc = mpt3sas_send_diag_release(ioc, buffer_type, &issue_reset);
2019
2020         if (issue_reset)
2021                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2022
2023         return rc;
2024 }
2025
2026 /**
2027  * _ctl_diag_read_buffer - request for copy of the diag buffer
2028  * @ioc: per adapter object
2029  * @arg: user space buffer containing ioctl content
2030  */
2031 static long
2032 _ctl_diag_read_buffer(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
2033 {
2034         struct mpt3_diag_read_buffer karg;
2035         struct mpt3_diag_read_buffer __user *uarg = arg;
2036         void *request_data, *diag_data;
2037         Mpi2DiagBufferPostRequest_t *mpi_request;
2038         Mpi2DiagBufferPostReply_t *mpi_reply;
2039         int rc, i;
2040         u8 buffer_type;
2041         unsigned long request_size, copy_size;
2042         u16 smid;
2043         u16 ioc_status;
2044         u8 issue_reset = 0;
2045
2046         if (copy_from_user(&karg, arg, sizeof(karg))) {
2047                 pr_err("failure at %s:%d/%s()!\n",
2048                     __FILE__, __LINE__, __func__);
2049                 return -EFAULT;
2050         }
2051
2052         dctlprintk(ioc, ioc_info(ioc, "%s\n",
2053                                  __func__));
2054
2055         buffer_type = karg.unique_id & 0x000000ff;
2056         if (!_ctl_diag_capability(ioc, buffer_type)) {
2057                 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
2058                         __func__, buffer_type);
2059                 return -EPERM;
2060         }
2061
2062         if (karg.unique_id != ioc->unique_id[buffer_type]) {
2063                 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
2064                         __func__, karg.unique_id);
2065                 return -EINVAL;
2066         }
2067
2068         request_data = ioc->diag_buffer[buffer_type];
2069         if (!request_data) {
2070                 ioc_err(ioc, "%s: doesn't have buffer for buffer_type(0x%02x)\n",
2071                         __func__, buffer_type);
2072                 return -ENOMEM;
2073         }
2074
2075         request_size = ioc->diag_buffer_sz[buffer_type];
2076
2077         if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
2078                 ioc_err(ioc, "%s: either the starting_offset or bytes_to_read are not 4 byte aligned\n",
2079                         __func__);
2080                 return -EINVAL;
2081         }
2082
2083         if (karg.starting_offset > request_size)
2084                 return -EINVAL;
2085
2086         diag_data = (void *)(request_data + karg.starting_offset);
2087         dctlprintk(ioc,
2088                    ioc_info(ioc, "%s: diag_buffer(%p), offset(%d), sz(%d)\n",
2089                             __func__, diag_data, karg.starting_offset,
2090                             karg.bytes_to_read));
2091
2092         /* Truncate data on requests that are too large */
2093         if ((diag_data + karg.bytes_to_read < diag_data) ||
2094             (diag_data + karg.bytes_to_read > request_data + request_size))
2095                 copy_size = request_size - karg.starting_offset;
2096         else
2097                 copy_size = karg.bytes_to_read;
2098
2099         if (copy_to_user((void __user *)uarg->diagnostic_data,
2100             diag_data, copy_size)) {
2101                 ioc_err(ioc, "%s: Unable to write mpt_diag_read_buffer_t data @ %p\n",
2102                         __func__, diag_data);
2103                 return -EFAULT;
2104         }
2105
2106         if ((karg.flags & MPT3_FLAGS_REREGISTER) == 0)
2107                 return 0;
2108
2109         dctlprintk(ioc,
2110                    ioc_info(ioc, "%s: Reregister buffer_type(0x%02x)\n",
2111                             __func__, buffer_type));
2112         if ((ioc->diag_buffer_status[buffer_type] &
2113             MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
2114                 dctlprintk(ioc,
2115                            ioc_info(ioc, "%s: buffer_type(0x%02x) is still registered\n",
2116                                     __func__, buffer_type));
2117                 return 0;
2118         }
2119         /* Get a free request frame and save the message context.
2120         */
2121
2122         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
2123                 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
2124                 rc = -EAGAIN;
2125                 goto out;
2126         }
2127
2128         smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
2129         if (!smid) {
2130                 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
2131                 rc = -EAGAIN;
2132                 goto out;
2133         }
2134
2135         rc = 0;
2136         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
2137         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
2138         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2139         ioc->ctl_cmds.smid = smid;
2140
2141         mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
2142         mpi_request->BufferType = buffer_type;
2143         mpi_request->BufferLength =
2144             cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
2145         mpi_request->BufferAddress =
2146             cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
2147         for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
2148                 mpi_request->ProductSpecific[i] =
2149                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
2150         mpi_request->VF_ID = 0; /* TODO */
2151         mpi_request->VP_ID = 0;
2152
2153         init_completion(&ioc->ctl_cmds.done);
2154         mpt3sas_base_put_smid_default(ioc, smid);
2155         wait_for_completion_timeout(&ioc->ctl_cmds.done,
2156             MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
2157
2158         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
2159                 issue_reset =
2160                         mpt3sas_base_check_cmd_timeout(ioc,
2161                                 ioc->ctl_cmds.status, mpi_request,
2162                                 sizeof(Mpi2DiagBufferPostRequest_t)/4);
2163                 goto issue_host_reset;
2164         }
2165
2166         /* process the completed Reply Message Frame */
2167         if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
2168                 ioc_err(ioc, "%s: no reply message\n", __func__);
2169                 rc = -EFAULT;
2170                 goto out;
2171         }
2172
2173         mpi_reply = ioc->ctl_cmds.reply;
2174         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
2175
2176         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
2177                 ioc->diag_buffer_status[buffer_type] |=
2178                     MPT3_DIAG_BUFFER_IS_REGISTERED;
2179                 dctlprintk(ioc, ioc_info(ioc, "%s: success\n", __func__));
2180         } else {
2181                 ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
2182                          __func__, ioc_status,
2183                          le32_to_cpu(mpi_reply->IOCLogInfo));
2184                 rc = -EFAULT;
2185         }
2186
2187  issue_host_reset:
2188         if (issue_reset)
2189                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2190
2191  out:
2192
2193         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
2194         return rc;
2195 }
2196
2197
2198
2199 #ifdef CONFIG_COMPAT
2200 /**
2201  * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2202  * @ioc: per adapter object
2203  * @cmd: ioctl opcode
2204  * @arg: (struct mpt3_ioctl_command32)
2205  *
2206  * MPT3COMMAND32 - Handle 32bit applications running on 64bit os.
2207  */
2208 static long
2209 _ctl_compat_mpt_command(struct MPT3SAS_ADAPTER *ioc, unsigned cmd,
2210         void __user *arg)
2211 {
2212         struct mpt3_ioctl_command32 karg32;
2213         struct mpt3_ioctl_command32 __user *uarg;
2214         struct mpt3_ioctl_command karg;
2215
2216         if (_IOC_SIZE(cmd) != sizeof(struct mpt3_ioctl_command32))
2217                 return -EINVAL;
2218
2219         uarg = (struct mpt3_ioctl_command32 __user *) arg;
2220
2221         if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2222                 pr_err("failure at %s:%d/%s()!\n",
2223                     __FILE__, __LINE__, __func__);
2224                 return -EFAULT;
2225         }
2226
2227         memset(&karg, 0, sizeof(struct mpt3_ioctl_command));
2228         karg.hdr.ioc_number = karg32.hdr.ioc_number;
2229         karg.hdr.port_number = karg32.hdr.port_number;
2230         karg.hdr.max_data_size = karg32.hdr.max_data_size;
2231         karg.timeout = karg32.timeout;
2232         karg.max_reply_bytes = karg32.max_reply_bytes;
2233         karg.data_in_size = karg32.data_in_size;
2234         karg.data_out_size = karg32.data_out_size;
2235         karg.max_sense_bytes = karg32.max_sense_bytes;
2236         karg.data_sge_offset = karg32.data_sge_offset;
2237         karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
2238         karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
2239         karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
2240         karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
2241         return _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2242 }
2243 #endif
2244
2245 /**
2246  * _ctl_ioctl_main - main ioctl entry point
2247  * @file:  (struct file)
2248  * @cmd:  ioctl opcode
2249  * @arg:  user space data buffer
2250  * @compat:  handles 32 bit applications in 64bit os
2251  * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
2252  * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
2253  */
2254 static long
2255 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg,
2256         u8 compat, u16 mpi_version)
2257 {
2258         struct MPT3SAS_ADAPTER *ioc;
2259         struct mpt3_ioctl_header ioctl_header;
2260         enum block_state state;
2261         long ret = -EINVAL;
2262
2263         /* get IOCTL header */
2264         if (copy_from_user(&ioctl_header, (char __user *)arg,
2265             sizeof(struct mpt3_ioctl_header))) {
2266                 pr_err("failure at %s:%d/%s()!\n",
2267                     __FILE__, __LINE__, __func__);
2268                 return -EFAULT;
2269         }
2270
2271         if (_ctl_verify_adapter(ioctl_header.ioc_number,
2272                                 &ioc, mpi_version) == -1 || !ioc)
2273                 return -ENODEV;
2274
2275         /* pci_access_mutex lock acquired by ioctl path */
2276         mutex_lock(&ioc->pci_access_mutex);
2277
2278         if (ioc->shost_recovery || ioc->pci_error_recovery ||
2279             ioc->is_driver_loading || ioc->remove_host) {
2280                 ret = -EAGAIN;
2281                 goto out_unlock_pciaccess;
2282         }
2283
2284         state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2285         if (state == NON_BLOCKING) {
2286                 if (!mutex_trylock(&ioc->ctl_cmds.mutex)) {
2287                         ret = -EAGAIN;
2288                         goto out_unlock_pciaccess;
2289                 }
2290         } else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) {
2291                 ret = -ERESTARTSYS;
2292                 goto out_unlock_pciaccess;
2293         }
2294
2295
2296         switch (cmd) {
2297         case MPT3IOCINFO:
2298                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_iocinfo))
2299                         ret = _ctl_getiocinfo(ioc, arg);
2300                 break;
2301 #ifdef CONFIG_COMPAT
2302         case MPT3COMMAND32:
2303 #endif
2304         case MPT3COMMAND:
2305         {
2306                 struct mpt3_ioctl_command __user *uarg;
2307                 struct mpt3_ioctl_command karg;
2308
2309 #ifdef CONFIG_COMPAT
2310                 if (compat) {
2311                         ret = _ctl_compat_mpt_command(ioc, cmd, arg);
2312                         break;
2313                 }
2314 #endif
2315                 if (copy_from_user(&karg, arg, sizeof(karg))) {
2316                         pr_err("failure at %s:%d/%s()!\n",
2317                             __FILE__, __LINE__, __func__);
2318                         ret = -EFAULT;
2319                         break;
2320                 }
2321
2322                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_command)) {
2323                         uarg = arg;
2324                         ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2325                 }
2326                 break;
2327         }
2328         case MPT3EVENTQUERY:
2329                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventquery))
2330                         ret = _ctl_eventquery(ioc, arg);
2331                 break;
2332         case MPT3EVENTENABLE:
2333                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventenable))
2334                         ret = _ctl_eventenable(ioc, arg);
2335                 break;
2336         case MPT3EVENTREPORT:
2337                 ret = _ctl_eventreport(ioc, arg);
2338                 break;
2339         case MPT3HARDRESET:
2340                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_diag_reset))
2341                         ret = _ctl_do_reset(ioc, arg);
2342                 break;
2343         case MPT3BTDHMAPPING:
2344                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_btdh_mapping))
2345                         ret = _ctl_btdh_mapping(ioc, arg);
2346                 break;
2347         case MPT3DIAGREGISTER:
2348                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_register))
2349                         ret = _ctl_diag_register(ioc, arg);
2350                 break;
2351         case MPT3DIAGUNREGISTER:
2352                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_unregister))
2353                         ret = _ctl_diag_unregister(ioc, arg);
2354                 break;
2355         case MPT3DIAGQUERY:
2356                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_query))
2357                         ret = _ctl_diag_query(ioc, arg);
2358                 break;
2359         case MPT3DIAGRELEASE:
2360                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_release))
2361                         ret = _ctl_diag_release(ioc, arg);
2362                 break;
2363         case MPT3DIAGREADBUFFER:
2364                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_read_buffer))
2365                         ret = _ctl_diag_read_buffer(ioc, arg);
2366                 break;
2367         default:
2368                 dctlprintk(ioc,
2369                            ioc_info(ioc, "unsupported ioctl opcode(0x%08x)\n",
2370                                     cmd));
2371                 break;
2372         }
2373
2374         mutex_unlock(&ioc->ctl_cmds.mutex);
2375 out_unlock_pciaccess:
2376         mutex_unlock(&ioc->pci_access_mutex);
2377         return ret;
2378 }
2379
2380 /**
2381  * _ctl_ioctl - mpt3ctl main ioctl entry point (unlocked)
2382  * @file: (struct file)
2383  * @cmd: ioctl opcode
2384  * @arg: ?
2385  */
2386 static long
2387 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2388 {
2389         long ret;
2390
2391         /* pass MPI25_VERSION | MPI26_VERSION value,
2392          * to indicate that this ioctl cmd
2393          * came from mpt3ctl ioctl device.
2394          */
2395         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0,
2396                 MPI25_VERSION | MPI26_VERSION);
2397         return ret;
2398 }
2399
2400 /**
2401  * _ctl_mpt2_ioctl - mpt2ctl main ioctl entry point (unlocked)
2402  * @file: (struct file)
2403  * @cmd: ioctl opcode
2404  * @arg: ?
2405  */
2406 static long
2407 _ctl_mpt2_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2408 {
2409         long ret;
2410
2411         /* pass MPI2_VERSION value, to indicate that this ioctl cmd
2412          * came from mpt2ctl ioctl device.
2413          */
2414         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0, MPI2_VERSION);
2415         return ret;
2416 }
2417 #ifdef CONFIG_COMPAT
2418 /**
2419  *_ ctl_ioctl_compat - main ioctl entry point (compat)
2420  * @file: ?
2421  * @cmd: ?
2422  * @arg: ?
2423  *
2424  * This routine handles 32 bit applications in 64bit os.
2425  */
2426 static long
2427 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2428 {
2429         long ret;
2430
2431         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1,
2432                 MPI25_VERSION | MPI26_VERSION);
2433         return ret;
2434 }
2435
2436 /**
2437  *_ ctl_mpt2_ioctl_compat - main ioctl entry point (compat)
2438  * @file: ?
2439  * @cmd: ?
2440  * @arg: ?
2441  *
2442  * This routine handles 32 bit applications in 64bit os.
2443  */
2444 static long
2445 _ctl_mpt2_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2446 {
2447         long ret;
2448
2449         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1, MPI2_VERSION);
2450         return ret;
2451 }
2452 #endif
2453
2454 /* scsi host attributes */
2455 /**
2456  * _ctl_version_fw_show - firmware version
2457  * @cdev: pointer to embedded class device
2458  * @attr: ?
2459  * @buf: the buffer returned
2460  *
2461  * A sysfs 'read-only' shost attribute.
2462  */
2463 static ssize_t
2464 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2465         char *buf)
2466 {
2467         struct Scsi_Host *shost = class_to_shost(cdev);
2468         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2469
2470         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2471             (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2472             (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2473             (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2474             ioc->facts.FWVersion.Word & 0x000000FF);
2475 }
2476 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2477
2478 /**
2479  * _ctl_version_bios_show - bios version
2480  * @cdev: pointer to embedded class device
2481  * @attr: ?
2482  * @buf: the buffer returned
2483  *
2484  * A sysfs 'read-only' shost attribute.
2485  */
2486 static ssize_t
2487 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2488         char *buf)
2489 {
2490         struct Scsi_Host *shost = class_to_shost(cdev);
2491         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2492
2493         u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2494
2495         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2496             (version & 0xFF000000) >> 24,
2497             (version & 0x00FF0000) >> 16,
2498             (version & 0x0000FF00) >> 8,
2499             version & 0x000000FF);
2500 }
2501 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2502
2503 /**
2504  * _ctl_version_mpi_show - MPI (message passing interface) version
2505  * @cdev: pointer to embedded class device
2506  * @attr: ?
2507  * @buf: the buffer returned
2508  *
2509  * A sysfs 'read-only' shost attribute.
2510  */
2511 static ssize_t
2512 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2513         char *buf)
2514 {
2515         struct Scsi_Host *shost = class_to_shost(cdev);
2516         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2517
2518         return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2519             ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2520 }
2521 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2522
2523 /**
2524  * _ctl_version_product_show - product name
2525  * @cdev: pointer to embedded class device
2526  * @attr: ?
2527  * @buf: the buffer returned
2528  *
2529  * A sysfs 'read-only' shost attribute.
2530  */
2531 static ssize_t
2532 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2533         char *buf)
2534 {
2535         struct Scsi_Host *shost = class_to_shost(cdev);
2536         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2537
2538         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2539 }
2540 static DEVICE_ATTR(version_product, S_IRUGO, _ctl_version_product_show, NULL);
2541
2542 /**
2543  * _ctl_version_nvdata_persistent_show - ndvata persistent version
2544  * @cdev: pointer to embedded class device
2545  * @attr: ?
2546  * @buf: the buffer returned
2547  *
2548  * A sysfs 'read-only' shost attribute.
2549  */
2550 static ssize_t
2551 _ctl_version_nvdata_persistent_show(struct device *cdev,
2552         struct device_attribute *attr, char *buf)
2553 {
2554         struct Scsi_Host *shost = class_to_shost(cdev);
2555         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2556
2557         return snprintf(buf, PAGE_SIZE, "%08xh\n",
2558             le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2559 }
2560 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2561         _ctl_version_nvdata_persistent_show, NULL);
2562
2563 /**
2564  * _ctl_version_nvdata_default_show - nvdata default version
2565  * @cdev: pointer to embedded class device
2566  * @attr: ?
2567  * @buf: the buffer returned
2568  *
2569  * A sysfs 'read-only' shost attribute.
2570  */
2571 static ssize_t
2572 _ctl_version_nvdata_default_show(struct device *cdev, struct device_attribute
2573         *attr, char *buf)
2574 {
2575         struct Scsi_Host *shost = class_to_shost(cdev);
2576         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2577
2578         return snprintf(buf, PAGE_SIZE, "%08xh\n",
2579             le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2580 }
2581 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2582         _ctl_version_nvdata_default_show, NULL);
2583
2584 /**
2585  * _ctl_board_name_show - board name
2586  * @cdev: pointer to embedded class device
2587  * @attr: ?
2588  * @buf: the buffer returned
2589  *
2590  * A sysfs 'read-only' shost attribute.
2591  */
2592 static ssize_t
2593 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2594         char *buf)
2595 {
2596         struct Scsi_Host *shost = class_to_shost(cdev);
2597         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2598
2599         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2600 }
2601 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2602
2603 /**
2604  * _ctl_board_assembly_show - board assembly name
2605  * @cdev: pointer to embedded class device
2606  * @attr: ?
2607  * @buf: the buffer returned
2608  *
2609  * A sysfs 'read-only' shost attribute.
2610  */
2611 static ssize_t
2612 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2613         char *buf)
2614 {
2615         struct Scsi_Host *shost = class_to_shost(cdev);
2616         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2617
2618         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2619 }
2620 static DEVICE_ATTR(board_assembly, S_IRUGO, _ctl_board_assembly_show, NULL);
2621
2622 /**
2623  * _ctl_board_tracer_show - board tracer number
2624  * @cdev: pointer to embedded class device
2625  * @attr: ?
2626  * @buf: the buffer returned
2627  *
2628  * A sysfs 'read-only' shost attribute.
2629  */
2630 static ssize_t
2631 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2632         char *buf)
2633 {
2634         struct Scsi_Host *shost = class_to_shost(cdev);
2635         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2636
2637         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2638 }
2639 static DEVICE_ATTR(board_tracer, S_IRUGO, _ctl_board_tracer_show, NULL);
2640
2641 /**
2642  * _ctl_io_delay_show - io missing delay
2643  * @cdev: pointer to embedded class device
2644  * @attr: ?
2645  * @buf: the buffer returned
2646  *
2647  * This is for firmware implemention for deboucing device
2648  * removal events.
2649  *
2650  * A sysfs 'read-only' shost attribute.
2651  */
2652 static ssize_t
2653 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2654         char *buf)
2655 {
2656         struct Scsi_Host *shost = class_to_shost(cdev);
2657         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2658
2659         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2660 }
2661 static DEVICE_ATTR(io_delay, S_IRUGO, _ctl_io_delay_show, NULL);
2662
2663 /**
2664  * _ctl_device_delay_show - device missing delay
2665  * @cdev: pointer to embedded class device
2666  * @attr: ?
2667  * @buf: the buffer returned
2668  *
2669  * This is for firmware implemention for deboucing device
2670  * removal events.
2671  *
2672  * A sysfs 'read-only' shost attribute.
2673  */
2674 static ssize_t
2675 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2676         char *buf)
2677 {
2678         struct Scsi_Host *shost = class_to_shost(cdev);
2679         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2680
2681         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2682 }
2683 static DEVICE_ATTR(device_delay, S_IRUGO, _ctl_device_delay_show, NULL);
2684
2685 /**
2686  * _ctl_fw_queue_depth_show - global credits
2687  * @cdev: pointer to embedded class device
2688  * @attr: ?
2689  * @buf: the buffer returned
2690  *
2691  * This is firmware queue depth limit
2692  *
2693  * A sysfs 'read-only' shost attribute.
2694  */
2695 static ssize_t
2696 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2697         char *buf)
2698 {
2699         struct Scsi_Host *shost = class_to_shost(cdev);
2700         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2701
2702         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2703 }
2704 static DEVICE_ATTR(fw_queue_depth, S_IRUGO, _ctl_fw_queue_depth_show, NULL);
2705
2706 /**
2707  * _ctl_sas_address_show - sas address
2708  * @cdev: pointer to embedded class device
2709  * @attr: ?
2710  * @buf: the buffer returned
2711  *
2712  * This is the controller sas address
2713  *
2714  * A sysfs 'read-only' shost attribute.
2715  */
2716 static ssize_t
2717 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2718         char *buf)
2719
2720 {
2721         struct Scsi_Host *shost = class_to_shost(cdev);
2722         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2723
2724         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2725             (unsigned long long)ioc->sas_hba.sas_address);
2726 }
2727 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2728         _ctl_host_sas_address_show, NULL);
2729
2730 /**
2731  * _ctl_logging_level_show - logging level
2732  * @cdev: pointer to embedded class device
2733  * @attr: ?
2734  * @buf: the buffer returned
2735  *
2736  * A sysfs 'read/write' shost attribute.
2737  */
2738 static ssize_t
2739 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2740         char *buf)
2741 {
2742         struct Scsi_Host *shost = class_to_shost(cdev);
2743         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2744
2745         return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2746 }
2747 static ssize_t
2748 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2749         const char *buf, size_t count)
2750 {
2751         struct Scsi_Host *shost = class_to_shost(cdev);
2752         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2753         int val = 0;
2754
2755         if (sscanf(buf, "%x", &val) != 1)
2756                 return -EINVAL;
2757
2758         ioc->logging_level = val;
2759         ioc_info(ioc, "logging_level=%08xh\n",
2760                  ioc->logging_level);
2761         return strlen(buf);
2762 }
2763 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR, _ctl_logging_level_show,
2764         _ctl_logging_level_store);
2765
2766 /**
2767  * _ctl_fwfault_debug_show - show/store fwfault_debug
2768  * @cdev: pointer to embedded class device
2769  * @attr: ?
2770  * @buf: the buffer returned
2771  *
2772  * mpt3sas_fwfault_debug is command line option
2773  * A sysfs 'read/write' shost attribute.
2774  */
2775 static ssize_t
2776 _ctl_fwfault_debug_show(struct device *cdev, struct device_attribute *attr,
2777         char *buf)
2778 {
2779         struct Scsi_Host *shost = class_to_shost(cdev);
2780         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2781
2782         return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
2783 }
2784 static ssize_t
2785 _ctl_fwfault_debug_store(struct device *cdev, struct device_attribute *attr,
2786         const char *buf, size_t count)
2787 {
2788         struct Scsi_Host *shost = class_to_shost(cdev);
2789         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2790         int val = 0;
2791
2792         if (sscanf(buf, "%d", &val) != 1)
2793                 return -EINVAL;
2794
2795         ioc->fwfault_debug = val;
2796         ioc_info(ioc, "fwfault_debug=%d\n",
2797                  ioc->fwfault_debug);
2798         return strlen(buf);
2799 }
2800 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,
2801         _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);
2802
2803 /**
2804  * _ctl_ioc_reset_count_show - ioc reset count
2805  * @cdev: pointer to embedded class device
2806  * @attr: ?
2807  * @buf: the buffer returned
2808  *
2809  * This is firmware queue depth limit
2810  *
2811  * A sysfs 'read-only' shost attribute.
2812  */
2813 static ssize_t
2814 _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,
2815         char *buf)
2816 {
2817         struct Scsi_Host *shost = class_to_shost(cdev);
2818         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2819
2820         return snprintf(buf, PAGE_SIZE, "%d\n", ioc->ioc_reset_count);
2821 }
2822 static DEVICE_ATTR(ioc_reset_count, S_IRUGO, _ctl_ioc_reset_count_show, NULL);
2823
2824 /**
2825  * _ctl_ioc_reply_queue_count_show - number of reply queues
2826  * @cdev: pointer to embedded class device
2827  * @attr: ?
2828  * @buf: the buffer returned
2829  *
2830  * This is number of reply queues
2831  *
2832  * A sysfs 'read-only' shost attribute.
2833  */
2834 static ssize_t
2835 _ctl_ioc_reply_queue_count_show(struct device *cdev,
2836         struct device_attribute *attr, char *buf)
2837 {
2838         u8 reply_queue_count;
2839         struct Scsi_Host *shost = class_to_shost(cdev);
2840         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2841
2842         if ((ioc->facts.IOCCapabilities &
2843             MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable)
2844                 reply_queue_count = ioc->reply_queue_count;
2845         else
2846                 reply_queue_count = 1;
2847
2848         return snprintf(buf, PAGE_SIZE, "%d\n", reply_queue_count);
2849 }
2850 static DEVICE_ATTR(reply_queue_count, S_IRUGO, _ctl_ioc_reply_queue_count_show,
2851         NULL);
2852
2853 /**
2854  * _ctl_BRM_status_show - Backup Rail Monitor Status
2855  * @cdev: pointer to embedded class device
2856  * @attr: ?
2857  * @buf: the buffer returned
2858  *
2859  * This is number of reply queues
2860  *
2861  * A sysfs 'read-only' shost attribute.
2862  */
2863 static ssize_t
2864 _ctl_BRM_status_show(struct device *cdev, struct device_attribute *attr,
2865         char *buf)
2866 {
2867         struct Scsi_Host *shost = class_to_shost(cdev);
2868         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2869         Mpi2IOUnitPage3_t *io_unit_pg3 = NULL;
2870         Mpi2ConfigReply_t mpi_reply;
2871         u16 backup_rail_monitor_status = 0;
2872         u16 ioc_status;
2873         int sz;
2874         ssize_t rc = 0;
2875
2876         if (!ioc->is_warpdrive) {
2877                 ioc_err(ioc, "%s: BRM attribute is only for warpdrive\n",
2878                         __func__);
2879                 goto out;
2880         }
2881         /* pci_access_mutex lock acquired by sysfs show path */
2882         mutex_lock(&ioc->pci_access_mutex);
2883         if (ioc->pci_error_recovery || ioc->remove_host) {
2884                 mutex_unlock(&ioc->pci_access_mutex);
2885                 return 0;
2886         }
2887
2888         /* allocate upto GPIOVal 36 entries */
2889         sz = offsetof(Mpi2IOUnitPage3_t, GPIOVal) + (sizeof(u16) * 36);
2890         io_unit_pg3 = kzalloc(sz, GFP_KERNEL);
2891         if (!io_unit_pg3) {
2892                 ioc_err(ioc, "%s: failed allocating memory for iounit_pg3: (%d) bytes\n",
2893                         __func__, sz);
2894                 goto out;
2895         }
2896
2897         if (mpt3sas_config_get_iounit_pg3(ioc, &mpi_reply, io_unit_pg3, sz) !=
2898             0) {
2899                 ioc_err(ioc, "%s: failed reading iounit_pg3\n",
2900                         __func__);
2901                 goto out;
2902         }
2903
2904         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
2905         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2906                 ioc_err(ioc, "%s: iounit_pg3 failed with ioc_status(0x%04x)\n",
2907                         __func__, ioc_status);
2908                 goto out;
2909         }
2910
2911         if (io_unit_pg3->GPIOCount < 25) {
2912                 ioc_err(ioc, "%s: iounit_pg3->GPIOCount less than 25 entries, detected (%d) entries\n",
2913                         __func__, io_unit_pg3->GPIOCount);
2914                 goto out;
2915         }
2916
2917         /* BRM status is in bit zero of GPIOVal[24] */
2918         backup_rail_monitor_status = le16_to_cpu(io_unit_pg3->GPIOVal[24]);
2919         rc = snprintf(buf, PAGE_SIZE, "%d\n", (backup_rail_monitor_status & 1));
2920
2921  out:
2922         kfree(io_unit_pg3);
2923         mutex_unlock(&ioc->pci_access_mutex);
2924         return rc;
2925 }
2926 static DEVICE_ATTR(BRM_status, S_IRUGO, _ctl_BRM_status_show, NULL);
2927
2928 struct DIAG_BUFFER_START {
2929         __le32  Size;
2930         __le32  DiagVersion;
2931         u8      BufferType;
2932         u8      Reserved[3];
2933         __le32  Reserved1;
2934         __le32  Reserved2;
2935         __le32  Reserved3;
2936 };
2937
2938 /**
2939  * _ctl_host_trace_buffer_size_show - host buffer size (trace only)
2940  * @cdev: pointer to embedded class device
2941  * @attr: ?
2942  * @buf: the buffer returned
2943  *
2944  * A sysfs 'read-only' shost attribute.
2945  */
2946 static ssize_t
2947 _ctl_host_trace_buffer_size_show(struct device *cdev,
2948         struct device_attribute *attr, char *buf)
2949 {
2950         struct Scsi_Host *shost = class_to_shost(cdev);
2951         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2952         u32 size = 0;
2953         struct DIAG_BUFFER_START *request_data;
2954
2955         if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2956                 ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
2957                         __func__);
2958                 return 0;
2959         }
2960
2961         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2962             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
2963                 ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
2964                         __func__);
2965                 return 0;
2966         }
2967
2968         request_data = (struct DIAG_BUFFER_START *)
2969             ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE];
2970         if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 ||
2971             le32_to_cpu(request_data->DiagVersion) == 0x01000000 ||
2972             le32_to_cpu(request_data->DiagVersion) == 0x01010000) &&
2973             le32_to_cpu(request_data->Reserved3) == 0x4742444c)
2974                 size = le32_to_cpu(request_data->Size);
2975
2976         ioc->ring_buffer_sz = size;
2977         return snprintf(buf, PAGE_SIZE, "%d\n", size);
2978 }
2979 static DEVICE_ATTR(host_trace_buffer_size, S_IRUGO,
2980         _ctl_host_trace_buffer_size_show, NULL);
2981
2982 /**
2983  * _ctl_host_trace_buffer_show - firmware ring buffer (trace only)
2984  * @cdev: pointer to embedded class device
2985  * @attr: ?
2986  * @buf: the buffer returned
2987  *
2988  * A sysfs 'read/write' shost attribute.
2989  *
2990  * You will only be able to read 4k bytes of ring buffer at a time.
2991  * In order to read beyond 4k bytes, you will have to write out the
2992  * offset to the same attribute, it will move the pointer.
2993  */
2994 static ssize_t
2995 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr,
2996         char *buf)
2997 {
2998         struct Scsi_Host *shost = class_to_shost(cdev);
2999         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3000         void *request_data;
3001         u32 size;
3002
3003         if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
3004                 ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
3005                         __func__);
3006                 return 0;
3007         }
3008
3009         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3010             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
3011                 ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
3012                         __func__);
3013                 return 0;
3014         }
3015
3016         if (ioc->ring_buffer_offset > ioc->ring_buffer_sz)
3017                 return 0;
3018
3019         size = ioc->ring_buffer_sz - ioc->ring_buffer_offset;
3020         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3021         request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset;
3022         memcpy(buf, request_data, size);
3023         return size;
3024 }
3025
3026 static ssize_t
3027 _ctl_host_trace_buffer_store(struct device *cdev, struct device_attribute *attr,
3028         const char *buf, size_t count)
3029 {
3030         struct Scsi_Host *shost = class_to_shost(cdev);
3031         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3032         int val = 0;
3033
3034         if (sscanf(buf, "%d", &val) != 1)
3035                 return -EINVAL;
3036
3037         ioc->ring_buffer_offset = val;
3038         return strlen(buf);
3039 }
3040 static DEVICE_ATTR(host_trace_buffer, S_IRUGO | S_IWUSR,
3041         _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store);
3042
3043
3044 /*****************************************/
3045
3046 /**
3047  * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only)
3048  * @cdev: pointer to embedded class device
3049  * @attr: ?
3050  * @buf: the buffer returned
3051  *
3052  * A sysfs 'read/write' shost attribute.
3053  *
3054  * This is a mechnism to post/release host_trace_buffers
3055  */
3056 static ssize_t
3057 _ctl_host_trace_buffer_enable_show(struct device *cdev,
3058         struct device_attribute *attr, char *buf)
3059 {
3060         struct Scsi_Host *shost = class_to_shost(cdev);
3061         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3062
3063         if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) ||
3064            ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3065             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0))
3066                 return snprintf(buf, PAGE_SIZE, "off\n");
3067         else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3068             MPT3_DIAG_BUFFER_IS_RELEASED))
3069                 return snprintf(buf, PAGE_SIZE, "release\n");
3070         else
3071                 return snprintf(buf, PAGE_SIZE, "post\n");
3072 }
3073
3074 static ssize_t
3075 _ctl_host_trace_buffer_enable_store(struct device *cdev,
3076         struct device_attribute *attr, const char *buf, size_t count)
3077 {
3078         struct Scsi_Host *shost = class_to_shost(cdev);
3079         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3080         char str[10] = "";
3081         struct mpt3_diag_register diag_register;
3082         u8 issue_reset = 0;
3083
3084         /* don't allow post/release occurr while recovery is active */
3085         if (ioc->shost_recovery || ioc->remove_host ||
3086             ioc->pci_error_recovery || ioc->is_driver_loading)
3087                 return -EBUSY;
3088
3089         if (sscanf(buf, "%9s", str) != 1)
3090                 return -EINVAL;
3091
3092         if (!strcmp(str, "post")) {
3093                 /* exit out if host buffers are already posted */
3094                 if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) &&
3095                     (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3096                     MPT3_DIAG_BUFFER_IS_REGISTERED) &&
3097                     ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3098                     MPT3_DIAG_BUFFER_IS_RELEASED) == 0))
3099                         goto out;
3100                 memset(&diag_register, 0, sizeof(struct mpt3_diag_register));
3101                 ioc_info(ioc, "posting host trace buffers\n");
3102                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
3103                 diag_register.requested_buffer_size = (1024 * 1024);
3104                 diag_register.unique_id = 0x7075900;
3105                 ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
3106                 _ctl_diag_register_2(ioc,  &diag_register);
3107         } else if (!strcmp(str, "release")) {
3108                 /* exit out if host buffers are already released */
3109                 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE])
3110                         goto out;
3111                 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3112                     MPT3_DIAG_BUFFER_IS_REGISTERED) == 0)
3113                         goto out;
3114                 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3115                     MPT3_DIAG_BUFFER_IS_RELEASED))
3116                         goto out;
3117                 ioc_info(ioc, "releasing host trace buffer\n");
3118                 mpt3sas_send_diag_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE,
3119                     &issue_reset);
3120         }
3121
3122  out:
3123         return strlen(buf);
3124 }
3125 static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR,
3126         _ctl_host_trace_buffer_enable_show,
3127         _ctl_host_trace_buffer_enable_store);
3128
3129 /*********** diagnostic trigger suppport *********************************/
3130
3131 /**
3132  * _ctl_diag_trigger_master_show - show the diag_trigger_master attribute
3133  * @cdev: pointer to embedded class device
3134  * @attr: ?
3135  * @buf: the buffer returned
3136  *
3137  * A sysfs 'read/write' shost attribute.
3138  */
3139 static ssize_t
3140 _ctl_diag_trigger_master_show(struct device *cdev,
3141         struct device_attribute *attr, char *buf)
3142
3143 {
3144         struct Scsi_Host *shost = class_to_shost(cdev);
3145         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3146         unsigned long flags;
3147         ssize_t rc;
3148
3149         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3150         rc = sizeof(struct SL_WH_MASTER_TRIGGER_T);
3151         memcpy(buf, &ioc->diag_trigger_master, rc);
3152         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3153         return rc;
3154 }
3155
3156 /**
3157  * _ctl_diag_trigger_master_store - store the diag_trigger_master attribute
3158  * @cdev: pointer to embedded class device
3159  * @attr: ?
3160  * @buf: the buffer returned
3161  * @count: ?
3162  *
3163  * A sysfs 'read/write' shost attribute.
3164  */
3165 static ssize_t
3166 _ctl_diag_trigger_master_store(struct device *cdev,
3167         struct device_attribute *attr, const char *buf, size_t count)
3168
3169 {
3170         struct Scsi_Host *shost = class_to_shost(cdev);
3171         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3172         unsigned long flags;
3173         ssize_t rc;
3174
3175         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3176         rc = min(sizeof(struct SL_WH_MASTER_TRIGGER_T), count);
3177         memset(&ioc->diag_trigger_master, 0,
3178             sizeof(struct SL_WH_MASTER_TRIGGER_T));
3179         memcpy(&ioc->diag_trigger_master, buf, rc);
3180         ioc->diag_trigger_master.MasterData |=
3181             (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET);
3182         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3183         return rc;
3184 }
3185 static DEVICE_ATTR(diag_trigger_master, S_IRUGO | S_IWUSR,
3186         _ctl_diag_trigger_master_show, _ctl_diag_trigger_master_store);
3187
3188
3189 /**
3190  * _ctl_diag_trigger_event_show - show the diag_trigger_event attribute
3191  * @cdev: pointer to embedded class device
3192  * @attr: ?
3193  * @buf: the buffer returned
3194  *
3195  * A sysfs 'read/write' shost attribute.
3196  */
3197 static ssize_t
3198 _ctl_diag_trigger_event_show(struct device *cdev,
3199         struct device_attribute *attr, char *buf)
3200 {
3201         struct Scsi_Host *shost = class_to_shost(cdev);
3202         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3203         unsigned long flags;
3204         ssize_t rc;
3205
3206         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3207         rc = sizeof(struct SL_WH_EVENT_TRIGGERS_T);
3208         memcpy(buf, &ioc->diag_trigger_event, rc);
3209         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3210         return rc;
3211 }
3212
3213 /**
3214  * _ctl_diag_trigger_event_store - store the diag_trigger_event attribute
3215  * @cdev: pointer to embedded class device
3216  * @attr: ?
3217  * @buf: the buffer returned
3218  * @count: ?
3219  *
3220  * A sysfs 'read/write' shost attribute.
3221  */
3222 static ssize_t
3223 _ctl_diag_trigger_event_store(struct device *cdev,
3224         struct device_attribute *attr, const char *buf, size_t count)
3225
3226 {
3227         struct Scsi_Host *shost = class_to_shost(cdev);
3228         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3229         unsigned long flags;
3230         ssize_t sz;
3231
3232         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3233         sz = min(sizeof(struct SL_WH_EVENT_TRIGGERS_T), count);
3234         memset(&ioc->diag_trigger_event, 0,
3235             sizeof(struct SL_WH_EVENT_TRIGGERS_T));
3236         memcpy(&ioc->diag_trigger_event, buf, sz);
3237         if (ioc->diag_trigger_event.ValidEntries > NUM_VALID_ENTRIES)
3238                 ioc->diag_trigger_event.ValidEntries = NUM_VALID_ENTRIES;
3239         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3240         return sz;
3241 }
3242 static DEVICE_ATTR(diag_trigger_event, S_IRUGO | S_IWUSR,
3243         _ctl_diag_trigger_event_show, _ctl_diag_trigger_event_store);
3244
3245
3246 /**
3247  * _ctl_diag_trigger_scsi_show - show the diag_trigger_scsi attribute
3248  * @cdev: pointer to embedded class device
3249  * @attr: ?
3250  * @buf: the buffer returned
3251  *
3252  * A sysfs 'read/write' shost attribute.
3253  */
3254 static ssize_t
3255 _ctl_diag_trigger_scsi_show(struct device *cdev,
3256         struct device_attribute *attr, char *buf)
3257 {
3258         struct Scsi_Host *shost = class_to_shost(cdev);
3259         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3260         unsigned long flags;
3261         ssize_t rc;
3262
3263         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3264         rc = sizeof(struct SL_WH_SCSI_TRIGGERS_T);
3265         memcpy(buf, &ioc->diag_trigger_scsi, rc);
3266         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3267         return rc;
3268 }
3269
3270 /**
3271  * _ctl_diag_trigger_scsi_store - store the diag_trigger_scsi attribute
3272  * @cdev: pointer to embedded class device
3273  * @attr: ?
3274  * @buf: the buffer returned
3275  * @count: ?
3276  *
3277  * A sysfs 'read/write' shost attribute.
3278  */
3279 static ssize_t
3280 _ctl_diag_trigger_scsi_store(struct device *cdev,
3281         struct device_attribute *attr, const char *buf, size_t count)
3282 {
3283         struct Scsi_Host *shost = class_to_shost(cdev);
3284         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3285         unsigned long flags;
3286         ssize_t sz;
3287
3288         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3289         sz = min(sizeof(struct SL_WH_SCSI_TRIGGERS_T), count);
3290         memset(&ioc->diag_trigger_scsi, 0,
3291             sizeof(struct SL_WH_EVENT_TRIGGERS_T));
3292         memcpy(&ioc->diag_trigger_scsi, buf, sz);
3293         if (ioc->diag_trigger_scsi.ValidEntries > NUM_VALID_ENTRIES)
3294                 ioc->diag_trigger_scsi.ValidEntries = NUM_VALID_ENTRIES;
3295         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3296         return sz;
3297 }
3298 static DEVICE_ATTR(diag_trigger_scsi, S_IRUGO | S_IWUSR,
3299         _ctl_diag_trigger_scsi_show, _ctl_diag_trigger_scsi_store);
3300
3301
3302 /**
3303  * _ctl_diag_trigger_scsi_show - show the diag_trigger_mpi attribute
3304  * @cdev: pointer to embedded class device
3305  * @attr: ?
3306  * @buf: the buffer returned
3307  *
3308  * A sysfs 'read/write' shost attribute.
3309  */
3310 static ssize_t
3311 _ctl_diag_trigger_mpi_show(struct device *cdev,
3312         struct device_attribute *attr, char *buf)
3313 {
3314         struct Scsi_Host *shost = class_to_shost(cdev);
3315         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3316         unsigned long flags;
3317         ssize_t rc;
3318
3319         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3320         rc = sizeof(struct SL_WH_MPI_TRIGGERS_T);
3321         memcpy(buf, &ioc->diag_trigger_mpi, rc);
3322         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3323         return rc;
3324 }
3325
3326 /**
3327  * _ctl_diag_trigger_mpi_store - store the diag_trigger_mpi attribute
3328  * @cdev: pointer to embedded class device
3329  * @attr: ?
3330  * @buf: the buffer returned
3331  * @count: ?
3332  *
3333  * A sysfs 'read/write' shost attribute.
3334  */
3335 static ssize_t
3336 _ctl_diag_trigger_mpi_store(struct device *cdev,
3337         struct device_attribute *attr, const char *buf, size_t count)
3338 {
3339         struct Scsi_Host *shost = class_to_shost(cdev);
3340         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3341         unsigned long flags;
3342         ssize_t sz;
3343
3344         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3345         sz = min(sizeof(struct SL_WH_MPI_TRIGGERS_T), count);
3346         memset(&ioc->diag_trigger_mpi, 0,
3347             sizeof(ioc->diag_trigger_mpi));
3348         memcpy(&ioc->diag_trigger_mpi, buf, sz);
3349         if (ioc->diag_trigger_mpi.ValidEntries > NUM_VALID_ENTRIES)
3350                 ioc->diag_trigger_mpi.ValidEntries = NUM_VALID_ENTRIES;
3351         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3352         return sz;
3353 }
3354
3355 static DEVICE_ATTR(diag_trigger_mpi, S_IRUGO | S_IWUSR,
3356         _ctl_diag_trigger_mpi_show, _ctl_diag_trigger_mpi_store);
3357
3358 /*********** diagnostic trigger suppport *** END ****************************/
3359
3360 /*****************************************/
3361
3362 struct device_attribute *mpt3sas_host_attrs[] = {
3363         &dev_attr_version_fw,
3364         &dev_attr_version_bios,
3365         &dev_attr_version_mpi,
3366         &dev_attr_version_product,
3367         &dev_attr_version_nvdata_persistent,
3368         &dev_attr_version_nvdata_default,
3369         &dev_attr_board_name,
3370         &dev_attr_board_assembly,
3371         &dev_attr_board_tracer,
3372         &dev_attr_io_delay,
3373         &dev_attr_device_delay,
3374         &dev_attr_logging_level,
3375         &dev_attr_fwfault_debug,
3376         &dev_attr_fw_queue_depth,
3377         &dev_attr_host_sas_address,
3378         &dev_attr_ioc_reset_count,
3379         &dev_attr_host_trace_buffer_size,
3380         &dev_attr_host_trace_buffer,
3381         &dev_attr_host_trace_buffer_enable,
3382         &dev_attr_reply_queue_count,
3383         &dev_attr_diag_trigger_master,
3384         &dev_attr_diag_trigger_event,
3385         &dev_attr_diag_trigger_scsi,
3386         &dev_attr_diag_trigger_mpi,
3387         &dev_attr_BRM_status,
3388         NULL,
3389 };
3390
3391 /* device attributes */
3392
3393 /**
3394  * _ctl_device_sas_address_show - sas address
3395  * @dev: pointer to embedded class device
3396  * @attr: ?
3397  * @buf: the buffer returned
3398  *
3399  * This is the sas address for the target
3400  *
3401  * A sysfs 'read-only' shost attribute.
3402  */
3403 static ssize_t
3404 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
3405         char *buf)
3406 {
3407         struct scsi_device *sdev = to_scsi_device(dev);
3408         struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3409
3410         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
3411             (unsigned long long)sas_device_priv_data->sas_target->sas_address);
3412 }
3413 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
3414
3415 /**
3416  * _ctl_device_handle_show - device handle
3417  * @dev: pointer to embedded class device
3418  * @attr: ?
3419  * @buf: the buffer returned
3420  *
3421  * This is the firmware assigned device handle
3422  *
3423  * A sysfs 'read-only' shost attribute.
3424  */
3425 static ssize_t
3426 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
3427         char *buf)
3428 {
3429         struct scsi_device *sdev = to_scsi_device(dev);
3430         struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3431
3432         return snprintf(buf, PAGE_SIZE, "0x%04x\n",
3433             sas_device_priv_data->sas_target->handle);
3434 }
3435 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
3436
3437 /**
3438  * _ctl_device_ncq_io_prio_show - send prioritized io commands to device
3439  * @dev: pointer to embedded device
3440  * @attr: ?
3441  * @buf: the buffer returned
3442  *
3443  * A sysfs 'read/write' sdev attribute, only works with SATA
3444  */
3445 static ssize_t
3446 _ctl_device_ncq_prio_enable_show(struct device *dev,
3447                                  struct device_attribute *attr, char *buf)
3448 {
3449         struct scsi_device *sdev = to_scsi_device(dev);
3450         struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3451
3452         return snprintf(buf, PAGE_SIZE, "%d\n",
3453                         sas_device_priv_data->ncq_prio_enable);
3454 }
3455
3456 static ssize_t
3457 _ctl_device_ncq_prio_enable_store(struct device *dev,
3458                                   struct device_attribute *attr,
3459                                   const char *buf, size_t count)
3460 {
3461         struct scsi_device *sdev = to_scsi_device(dev);
3462         struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3463         bool ncq_prio_enable = 0;
3464
3465         if (kstrtobool(buf, &ncq_prio_enable))
3466                 return -EINVAL;
3467
3468         if (!scsih_ncq_prio_supp(sdev))
3469                 return -EINVAL;
3470
3471         sas_device_priv_data->ncq_prio_enable = ncq_prio_enable;
3472         return strlen(buf);
3473 }
3474 static DEVICE_ATTR(sas_ncq_prio_enable, S_IRUGO | S_IWUSR,
3475                    _ctl_device_ncq_prio_enable_show,
3476                    _ctl_device_ncq_prio_enable_store);
3477
3478 struct device_attribute *mpt3sas_dev_attrs[] = {
3479         &dev_attr_sas_address,
3480         &dev_attr_sas_device_handle,
3481         &dev_attr_sas_ncq_prio_enable,
3482         NULL,
3483 };
3484
3485 /* file operations table for mpt3ctl device */
3486 static const struct file_operations ctl_fops = {
3487         .owner = THIS_MODULE,
3488         .unlocked_ioctl = _ctl_ioctl,
3489         .poll = _ctl_poll,
3490         .fasync = _ctl_fasync,
3491 #ifdef CONFIG_COMPAT
3492         .compat_ioctl = _ctl_ioctl_compat,
3493 #endif
3494 };
3495
3496 /* file operations table for mpt2ctl device */
3497 static const struct file_operations ctl_gen2_fops = {
3498         .owner = THIS_MODULE,
3499         .unlocked_ioctl = _ctl_mpt2_ioctl,
3500         .poll = _ctl_poll,
3501         .fasync = _ctl_fasync,
3502 #ifdef CONFIG_COMPAT
3503         .compat_ioctl = _ctl_mpt2_ioctl_compat,
3504 #endif
3505 };
3506
3507 static struct miscdevice ctl_dev = {
3508         .minor  = MPT3SAS_MINOR,
3509         .name   = MPT3SAS_DEV_NAME,
3510         .fops   = &ctl_fops,
3511 };
3512
3513 static struct miscdevice gen2_ctl_dev = {
3514         .minor  = MPT2SAS_MINOR,
3515         .name   = MPT2SAS_DEV_NAME,
3516         .fops   = &ctl_gen2_fops,
3517 };
3518
3519 /**
3520  * mpt3sas_ctl_init - main entry point for ctl.
3521  * @hbas_to_enumerate: ?
3522  */
3523 void
3524 mpt3sas_ctl_init(ushort hbas_to_enumerate)
3525 {
3526         async_queue = NULL;
3527
3528         /* Don't register mpt3ctl ioctl device if
3529          * hbas_to_enumarate is one.
3530          */
3531         if (hbas_to_enumerate != 1)
3532                 if (misc_register(&ctl_dev) < 0)
3533                         pr_err("%s can't register misc device [minor=%d]\n",
3534                             MPT3SAS_DRIVER_NAME, MPT3SAS_MINOR);
3535
3536         /* Don't register mpt3ctl ioctl device if
3537          * hbas_to_enumarate is two.
3538          */
3539         if (hbas_to_enumerate != 2)
3540                 if (misc_register(&gen2_ctl_dev) < 0)
3541                         pr_err("%s can't register misc device [minor=%d]\n",
3542                             MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
3543
3544         init_waitqueue_head(&ctl_poll_wait);
3545 }
3546
3547 /**
3548  * mpt3sas_ctl_exit - exit point for ctl
3549  * @hbas_to_enumerate: ?
3550  */
3551 void
3552 mpt3sas_ctl_exit(ushort hbas_to_enumerate)
3553 {
3554         struct MPT3SAS_ADAPTER *ioc;
3555         int i;
3556
3557         list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
3558
3559                 /* free memory associated to diag buffers */
3560                 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
3561                         if (!ioc->diag_buffer[i])
3562                                 continue;
3563                         if (!(ioc->diag_buffer_status[i] &
3564                             MPT3_DIAG_BUFFER_IS_REGISTERED))
3565                                 continue;
3566                         if ((ioc->diag_buffer_status[i] &
3567                             MPT3_DIAG_BUFFER_IS_RELEASED))
3568                                 continue;
3569                         dma_free_coherent(&ioc->pdev->dev,
3570                                           ioc->diag_buffer_sz[i],
3571                                           ioc->diag_buffer[i],
3572                                           ioc->diag_buffer_dma[i]);
3573                         ioc->diag_buffer[i] = NULL;
3574                         ioc->diag_buffer_status[i] = 0;
3575                 }
3576
3577                 kfree(ioc->event_log);
3578         }
3579         if (hbas_to_enumerate != 1)
3580                 misc_deregister(&ctl_dev);
3581         if (hbas_to_enumerate != 2)
3582                 misc_deregister(&gen2_ctl_dev);
3583 }