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         pr_info(MPT3SAS_FMT "%s: %s, smid(%d)\n",
 189             ioc->name, calling_function_name, desc, smid);
 190
 191         if (!mpi_reply)
 192                 return;
 193
 194         if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
 195                 pr_info(MPT3SAS_FMT
 196                     "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
 197                     ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
 198                     le32_to_cpu(mpi_reply->IOCLogInfo));
 199
 200         if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 201             mpi_request->Function ==
 202             MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 203                 Mpi2SCSIIOReply_t *scsi_reply =
 204                     (Mpi2SCSIIOReply_t *)mpi_reply;
 205                 struct _sas_device *sas_device = NULL;
 206                 struct _pcie_device *pcie_device = NULL;
 207
 208                 sas_device = mpt3sas_get_sdev_by_handle(ioc,
 209                     le16_to_cpu(scsi_reply->DevHandle));
 210                 if (sas_device) {
 211                         pr_warn(MPT3SAS_FMT "\tsas_address(0x%016llx), phy(%d)\n",
 212                                 ioc->name, (unsigned long long)
 213                             sas_device->sas_address, sas_device->phy);
 214                         pr_warn(MPT3SAS_FMT
 215                             "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
 216                             ioc->name, (unsigned long long)
 217                             sas_device->enclosure_logical_id, sas_device->slot);
 218                         sas_device_put(sas_device);
 219                 }
 220                 if (!sas_device) {
 221                         pcie_device = mpt3sas_get_pdev_by_handle(ioc,
 222                                 le16_to_cpu(scsi_reply->DevHandle));
 223                         if (pcie_device) {
 224                                 pr_warn(MPT3SAS_FMT
 225                                     "\tWWID(0x%016llx), port(%d)\n", ioc->name,
 226                                     (unsigned long long)pcie_device->wwid,
 227                                     pcie_device->port_num);
 228                                 if (pcie_device->enclosure_handle != 0)
 229                                         pr_warn(MPT3SAS_FMT
 230                                             "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
 231                                             ioc->name, (unsigned long long)
 232                                             pcie_device->enclosure_logical_id,
 233                                             pcie_device->slot);
 234                                 pcie_device_put(pcie_device);
 235                         }
 236                 }
 237                 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
 238                         pr_info(MPT3SAS_FMT
 239                             "\tscsi_state(0x%02x), scsi_status"
 240                             "(0x%02x)\n", ioc->name,
 241                             scsi_reply->SCSIState,
 242                             scsi_reply->SCSIStatus);
 243         }
 244 }
 245
 246 /**
 247  * mpt3sas_ctl_done - ctl module completion routine
 248  * @ioc: per adapter object
 249  * @smid: system request message index
 250  * @msix_index: MSIX table index supplied by the OS
 251  * @reply: reply message frame(lower 32bit addr)
 252  * Context: none.
 253  *
 254  * The callback handler when using ioc->ctl_cb_idx.
 255  *
 256  * Return: 1 meaning mf should be freed from _base_interrupt
 257  *         0 means the mf is freed from this function.
 258  */
 259 u8
 260 mpt3sas_ctl_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 261         u32 reply)
 262 {
 263         MPI2DefaultReply_t *mpi_reply;
 264         Mpi2SCSIIOReply_t *scsiio_reply;
 265         Mpi26NVMeEncapsulatedErrorReply_t *nvme_error_reply;
 266         const void *sense_data;
 267         u32 sz;
 268
 269         if (ioc->ctl_cmds.status == MPT3_CMD_NOT_USED)
 270                 return 1;
 271         if (ioc->ctl_cmds.smid != smid)
 272                 return 1;
 273         ioc->ctl_cmds.status |= MPT3_CMD_COMPLETE;
 274         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
 275         if (mpi_reply) {
 276                 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 277                 ioc->ctl_cmds.status |= MPT3_CMD_REPLY_VALID;
 278                 /* get sense data */
 279                 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 280                     mpi_reply->Function ==
 281                     MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 282                         scsiio_reply = (Mpi2SCSIIOReply_t *)mpi_reply;
 283                         if (scsiio_reply->SCSIState &
 284                             MPI2_SCSI_STATE_AUTOSENSE_VALID) {
 285                                 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
 286                                     le32_to_cpu(scsiio_reply->SenseCount));
 287                                 sense_data = mpt3sas_base_get_sense_buffer(ioc,
 288                                     smid);
 289                                 memcpy(ioc->ctl_cmds.sense, sense_data, sz);
 290                         }
 291                 }
 292                 /*
 293                  * Get Error Response data for NVMe device. The ctl_cmds.sense
 294                  * buffer is used to store the Error Response data.
 295                  */
 296                 if (mpi_reply->Function == MPI2_FUNCTION_NVME_ENCAPSULATED) {
 297                         nvme_error_reply =
 298                             (Mpi26NVMeEncapsulatedErrorReply_t *)mpi_reply;
 299                         sz = min_t(u32, NVME_ERROR_RESPONSE_SIZE,
 300                             le16_to_cpu(nvme_error_reply->ErrorResponseCount));
 301                         sense_data = mpt3sas_base_get_sense_buffer(ioc, smid);
 302                         memcpy(ioc->ctl_cmds.sense, sense_data, sz);
 303                 }
 304         }
 305
 306         _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
 307         ioc->ctl_cmds.status &= ~MPT3_CMD_PENDING;
 308         complete(&ioc->ctl_cmds.done);
 309         return 1;
 310 }
 311
 312 /**
 313  * _ctl_check_event_type - determines when an event needs logging
 314  * @ioc: per adapter object
 315  * @event: firmware event
 316  *
 317  * The bitmask in ioc->event_type[] indicates which events should be
 318  * be saved in the driver event_log.  This bitmask is set by application.
 319  *
 320  * Return: 1 when event should be captured, or zero means no match.
 321  */
 322 static int
 323 _ctl_check_event_type(struct MPT3SAS_ADAPTER *ioc, u16 event)
 324 {
 325         u16 i;
 326         u32 desired_event;
 327
 328         if (event >= 128 || !event || !ioc->event_log)
 329                 return 0;
 330
 331         desired_event = (1 << (event % 32));
 332         if (!desired_event)
 333                 desired_event = 1;
 334         i = event / 32;
 335         return desired_event & ioc->event_type[i];
 336 }
 337
 338 /**
 339  * mpt3sas_ctl_add_to_event_log - add event
 340  * @ioc: per adapter object
 341  * @mpi_reply: reply message frame
 342  */
 343 void
 344 mpt3sas_ctl_add_to_event_log(struct MPT3SAS_ADAPTER *ioc,
 345         Mpi2EventNotificationReply_t *mpi_reply)
 346 {
 347         struct MPT3_IOCTL_EVENTS *event_log;
 348         u16 event;
 349         int i;
 350         u32 sz, event_data_sz;
 351         u8 send_aen = 0;
 352
 353         if (!ioc->event_log)
 354                 return;
 355
 356         event = le16_to_cpu(mpi_reply->Event);
 357
 358         if (_ctl_check_event_type(ioc, event)) {
 359
 360                 /* insert entry into circular event_log */
 361                 i = ioc->event_context % MPT3SAS_CTL_EVENT_LOG_SIZE;
 362                 event_log = ioc->event_log;
 363                 event_log[i].event = event;
 364                 event_log[i].context = ioc->event_context++;
 365
 366                 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
 367                 sz = min_t(u32, event_data_sz, MPT3_EVENT_DATA_SIZE);
 368                 memset(event_log[i].data, 0, MPT3_EVENT_DATA_SIZE);
 369                 memcpy(event_log[i].data, mpi_reply->EventData, sz);
 370                 send_aen = 1;
 371         }
 372
 373         /* This aen_event_read_flag flag is set until the
 374          * application has read the event log.
 375          * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
 376          */
 377         if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
 378             (send_aen && !ioc->aen_event_read_flag)) {
 379                 ioc->aen_event_read_flag = 1;
 380                 wake_up_interruptible(&ctl_poll_wait);
 381                 if (async_queue)
 382                         kill_fasync(&async_queue, SIGIO, POLL_IN);
 383         }
 384 }
 385
 386 /**
 387  * mpt3sas_ctl_event_callback - firmware event handler (called at ISR time)
 388  * @ioc: per adapter object
 389  * @msix_index: MSIX table index supplied by the OS
 390  * @reply: reply message frame(lower 32bit addr)
 391  * Context: interrupt.
 392  *
 393  * This function merely adds a new work task into ioc->firmware_event_thread.
 394  * The tasks are worked from _firmware_event_work in user context.
 395  *
 396  * Return: 1 meaning mf should be freed from _base_interrupt
 397  *         0 means the mf is freed from this function.
 398  */
 399 u8
 400 mpt3sas_ctl_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
 401         u32 reply)
 402 {
 403         Mpi2EventNotificationReply_t *mpi_reply;
 404
 405         mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
 406         if (mpi_reply)
 407                 mpt3sas_ctl_add_to_event_log(ioc, mpi_reply);
 408         return 1;
 409 }
 410
 411 /**
 412  * _ctl_verify_adapter - validates ioc_number passed from application
 413  * @ioc_number: ?
 414  * @iocpp: The ioc pointer is returned in this.
 415  * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
 416  * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
 417  *
 418  * Return: (-1) means error, else ioc_number.
 419  */
 420 static int
 421 _ctl_verify_adapter(int ioc_number, struct MPT3SAS_ADAPTER **iocpp,
 422                                                         int mpi_version)
 423 {
 424         struct MPT3SAS_ADAPTER *ioc;
 425         int version = 0;
 426         /* global ioc lock to protect controller on list operations */
 427         spin_lock(&gioc_lock);
 428         list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
 429                 if (ioc->id != ioc_number)
 430                         continue;
 431                 /* Check whether this ioctl command is from right
 432                  * ioctl device or not, if not continue the search.
 433                  */
 434                 version = ioc->hba_mpi_version_belonged;
 435                 /* MPI25_VERSION and MPI26_VERSION uses same ioctl
 436                  * device.
 437                  */
 438                 if (mpi_version == (MPI25_VERSION | MPI26_VERSION)) {
 439                         if ((version == MPI25_VERSION) ||
 440                                 (version == MPI26_VERSION))
 441                                 goto out;
 442                         else
 443                                 continue;
 444                 } else {
 445                         if (version != mpi_version)
 446                                 continue;
 447                 }
 448 out:
 449                 spin_unlock(&gioc_lock);
 450                 *iocpp = ioc;
 451                 return ioc_number;
 452         }
 453         spin_unlock(&gioc_lock);
 454         *iocpp = NULL;
 455         return -1;
 456 }
 457
 458 /**
 459  * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
 460  * @ioc: per adapter object
 461  *
 462  * The handler for doing any required cleanup or initialization.
 463  */
 464 void mpt3sas_ctl_pre_reset_handler(struct MPT3SAS_ADAPTER *ioc)
 465 {
 466         int i;
 467         u8 issue_reset;
 468
 469         dtmprintk(ioc, pr_info(MPT3SAS_FMT
 470                         "%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
 471         for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
 472                 if (!(ioc->diag_buffer_status[i] &
 473                       MPT3_DIAG_BUFFER_IS_REGISTERED))
 474                         continue;
 475                 if ((ioc->diag_buffer_status[i] &
 476                      MPT3_DIAG_BUFFER_IS_RELEASED))
 477                         continue;
 478                 mpt3sas_send_diag_release(ioc, i, &issue_reset);
 479         }
 480 }
 481
 482 /**
 483  * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
 484  * @ioc: per adapter object
 485  *
 486  * The handler for doing any required cleanup or initialization.
 487  */
 488 void mpt3sas_ctl_after_reset_handler(struct MPT3SAS_ADAPTER *ioc)
 489 {
 490         dtmprintk(ioc, pr_info(MPT3SAS_FMT
 491                         "%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
 492         if (ioc->ctl_cmds.status & MPT3_CMD_PENDING) {
 493                 ioc->ctl_cmds.status |= MPT3_CMD_RESET;
 494                 mpt3sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
 495                 complete(&ioc->ctl_cmds.done);
 496         }
 497 }
 498
 499 /**
 500  * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
 501  * @ioc: per adapter object
 502  *
 503  * The handler for doing any required cleanup or initialization.
 504  */
 505 void mpt3sas_ctl_reset_done_handler(struct MPT3SAS_ADAPTER *ioc)
 506 {
 507         int i;
 508
 509         dtmprintk(ioc, pr_info(MPT3SAS_FMT
 510                         "%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));
 511
 512         for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
 513                 if (!(ioc->diag_buffer_status[i] &
 514                       MPT3_DIAG_BUFFER_IS_REGISTERED))
 515                         continue;
 516                 if ((ioc->diag_buffer_status[i] &
 517                      MPT3_DIAG_BUFFER_IS_RELEASED))
 518                         continue;
 519                 ioc->diag_buffer_status[i] |=
 520                         MPT3_DIAG_BUFFER_IS_DIAG_RESET;
 521         }
 522 }
 523
 524 /**
 525  * _ctl_fasync -
 526  * @fd: ?
 527  * @filep: ?
 528  * @mode: ?
 529  *
 530  * Called when application request fasyn callback handler.
 531  */
 532 static int
 533 _ctl_fasync(int fd, struct file *filep, int mode)
 534 {
 535         return fasync_helper(fd, filep, mode, &async_queue);
 536 }
 537
 538 /**
 539  * _ctl_poll -
 540  * @filep: ?
 541  * @wait: ?
 542  *
 543  */
 544 static __poll_t
 545 _ctl_poll(struct file *filep, poll_table *wait)
 546 {
 547         struct MPT3SAS_ADAPTER *ioc;
 548
 549         poll_wait(filep, &ctl_poll_wait, wait);
 550
 551         /* global ioc lock to protect controller on list operations */
 552         spin_lock(&gioc_lock);
 553         list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
 554                 if (ioc->aen_event_read_flag) {
 555                         spin_unlock(&gioc_lock);
 556                         return EPOLLIN | EPOLLRDNORM;
 557                 }
 558         }
 559         spin_unlock(&gioc_lock);
 560         return 0;
 561 }
 562
 563 /**
 564  * _ctl_set_task_mid - assign an active smid to tm request
 565  * @ioc: per adapter object
 566  * @karg: (struct mpt3_ioctl_command)
 567  * @tm_request: pointer to mf from user space
 568  *
 569  * Return: 0 when an smid if found, else fail.
 570  * during failure, the reply frame is filled.
 571  */
 572 static int
 573 _ctl_set_task_mid(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command *karg,
 574         Mpi2SCSITaskManagementRequest_t *tm_request)
 575 {
 576         u8 found = 0;
 577         u16 smid;
 578         u16 handle;
 579         struct scsi_cmnd *scmd;
 580         struct MPT3SAS_DEVICE *priv_data;
 581         Mpi2SCSITaskManagementReply_t *tm_reply;
 582         u32 sz;
 583         u32 lun;
 584         char *desc = NULL;
 585
 586         if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
 587                 desc = "abort_task";
 588         else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
 589                 desc = "query_task";
 590         else
 591                 return 0;
 592
 593         lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
 594
 595         handle = le16_to_cpu(tm_request->DevHandle);
 596         for (smid = ioc->scsiio_depth; smid && !found; smid--) {
 597                 struct scsiio_tracker *st;
 598
 599                 scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid);
 600                 if (!scmd)
 601                         continue;
 602                 if (lun != scmd->device->lun)
 603                         continue;
 604                 priv_data = scmd->device->hostdata;
 605                 if (priv_data->sas_target == NULL)
 606                         continue;
 607                 if (priv_data->sas_target->handle != handle)
 608                         continue;
 609                 st = scsi_cmd_priv(scmd);
 610                 tm_request->TaskMID = cpu_to_le16(st->smid);
 611                 found = 1;
 612         }
 613
 614         if (!found) {
 615                 dctlprintk(ioc, pr_info(MPT3SAS_FMT
 616                         "%s: handle(0x%04x), lun(%d), no active mid!!\n",
 617                         ioc->name,
 618                     desc, le16_to_cpu(tm_request->DevHandle), lun));
 619                 tm_reply = ioc->ctl_cmds.reply;
 620                 tm_reply->DevHandle = tm_request->DevHandle;
 621                 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
 622                 tm_reply->TaskType = tm_request->TaskType;
 623                 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
 624                 tm_reply->VP_ID = tm_request->VP_ID;
 625                 tm_reply->VF_ID = tm_request->VF_ID;
 626                 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
 627                 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
 628                     sz))
 629                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 630                             __LINE__, __func__);
 631                 return 1;
 632         }
 633
 634         dctlprintk(ioc, pr_info(MPT3SAS_FMT
 635                 "%s: handle(0x%04x), lun(%d), task_mid(%d)\n", ioc->name,
 636             desc, le16_to_cpu(tm_request->DevHandle), lun,
 637              le16_to_cpu(tm_request->TaskMID)));
 638         return 0;
 639 }
 640
 641 /**
 642  * _ctl_do_mpt_command - main handler for MPT3COMMAND opcode
 643  * @ioc: per adapter object
 644  * @karg: (struct mpt3_ioctl_command)
 645  * @mf: pointer to mf in user space
 646  */
 647 static long
 648 _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
 649         void __user *mf)
 650 {
 651         MPI2RequestHeader_t *mpi_request = NULL, *request;
 652         MPI2DefaultReply_t *mpi_reply;
 653         Mpi26NVMeEncapsulatedRequest_t *nvme_encap_request = NULL;
 654         struct _pcie_device *pcie_device = NULL;
 655         u32 ioc_state;
 656         u16 smid;
 657         u8 timeout;
 658         u8 issue_reset;
 659         u32 sz, sz_arg;
 660         void *psge;
 661         void *data_out = NULL;
 662         dma_addr_t data_out_dma = 0;
 663         size_t data_out_sz = 0;
 664         void *data_in = NULL;
 665         dma_addr_t data_in_dma = 0;
 666         size_t data_in_sz = 0;
 667         long ret;
 668         u16 wait_state_count;
 669         u16 device_handle = MPT3SAS_INVALID_DEVICE_HANDLE;
 670         u8 tr_method = MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE;
 671
 672         issue_reset = 0;
 673
 674         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
 675                 pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
 676                     ioc->name, __func__);
 677                 ret = -EAGAIN;
 678                 goto out;
 679         }
 680
 681         wait_state_count = 0;
 682         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
 683         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
 684                 if (wait_state_count++ == 10) {
 685                         pr_err(MPT3SAS_FMT
 686                             "%s: failed due to ioc not operational\n",
 687                             ioc->name, __func__);
 688                         ret = -EFAULT;
 689                         goto out;
 690                 }
 691                 ssleep(1);
 692                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
 693                 pr_info(MPT3SAS_FMT
 694                         "%s: waiting for operational state(count=%d)\n",
 695                         ioc->name,
 696                     __func__, wait_state_count);
 697         }
 698         if (wait_state_count)
 699                 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
 700                     ioc->name, __func__);
 701
 702         mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL);
 703         if (!mpi_request) {
 704                 pr_err(MPT3SAS_FMT
 705                         "%s: failed obtaining a memory for mpi_request\n",
 706                         ioc->name, __func__);
 707                 ret = -ENOMEM;
 708                 goto out;
 709         }
 710
 711         /* Check for overflow and wraparound */
 712         if (karg.data_sge_offset * 4 > ioc->request_sz ||
 713             karg.data_sge_offset > (UINT_MAX / 4)) {
 714                 ret = -EINVAL;
 715                 goto out;
 716         }
 717
 718         /* copy in request message frame from user */
 719         if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
 720                 pr_err("failure at %s:%d/%s()!\n", __FILE__, __LINE__,
 721                     __func__);
 722                 ret = -EFAULT;
 723                 goto out;
 724         }
 725
 726         if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
 727                 smid = mpt3sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx);
 728                 if (!smid) {
 729                         pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
 730                             ioc->name, __func__);
 731                         ret = -EAGAIN;
 732                         goto out;
 733                 }
 734         } else {
 735                 /* Use first reserved smid for passthrough ioctls */
 736                 smid = ioc->scsiio_depth - INTERNAL_SCSIIO_CMDS_COUNT + 1;
 737         }
 738
 739         ret = 0;
 740         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
 741         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
 742         request = mpt3sas_base_get_msg_frame(ioc, smid);
 743         memcpy(request, mpi_request, karg.data_sge_offset*4);
 744         ioc->ctl_cmds.smid = smid;
 745         data_out_sz = karg.data_out_size;
 746         data_in_sz = karg.data_in_size;
 747
 748         if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 749             mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
 750             mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT ||
 751             mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH ||
 752             mpi_request->Function == MPI2_FUNCTION_NVME_ENCAPSULATED) {
 753
 754                 device_handle = le16_to_cpu(mpi_request->FunctionDependent1);
 755                 if (!device_handle || (device_handle >
 756                     ioc->facts.MaxDevHandle)) {
 757                         ret = -EINVAL;
 758                         mpt3sas_base_free_smid(ioc, smid);
 759                         goto out;
 760                 }
 761         }
 762
 763         /* obtain dma-able memory for data transfer */
 764         if (data_out_sz) /* WRITE */ {
 765                 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
 766                     &data_out_dma);
 767                 if (!data_out) {
 768                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 769                             __LINE__, __func__);
 770                         ret = -ENOMEM;
 771                         mpt3sas_base_free_smid(ioc, smid);
 772                         goto out;
 773                 }
 774                 if (copy_from_user(data_out, karg.data_out_buf_ptr,
 775                         data_out_sz)) {
 776                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 777                             __LINE__, __func__);
 778                         ret =  -EFAULT;
 779                         mpt3sas_base_free_smid(ioc, smid);
 780                         goto out;
 781                 }
 782         }
 783
 784         if (data_in_sz) /* READ */ {
 785                 data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
 786                     &data_in_dma);
 787                 if (!data_in) {
 788                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
 789                             __LINE__, __func__);
 790                         ret = -ENOMEM;
 791                         mpt3sas_base_free_smid(ioc, smid);
 792                         goto out;
 793                 }
 794         }
 795
 796         psge = (void *)request + (karg.data_sge_offset*4);
 797
 798         /* send command to firmware */
 799         _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
 800
 801         init_completion(&ioc->ctl_cmds.done);
 802         switch (mpi_request->Function) {
 803         case MPI2_FUNCTION_NVME_ENCAPSULATED:
 804         {
 805                 nvme_encap_request = (Mpi26NVMeEncapsulatedRequest_t *)request;
 806                 /*
 807                  * Get the Physical Address of the sense buffer.
 808                  * Use Error Response buffer address field to hold the sense
 809                  * buffer address.
 810                  * Clear the internal sense buffer, which will potentially hold
 811                  * the Completion Queue Entry on return, or 0 if no Entry.
 812                  * Build the PRPs and set direction bits.
 813                  * Send the request.
 814                  */
 815                 nvme_encap_request->ErrorResponseBaseAddress =
 816                     cpu_to_le64(ioc->sense_dma & 0xFFFFFFFF00000000UL);
 817                 nvme_encap_request->ErrorResponseBaseAddress |=
 818                    cpu_to_le64(le32_to_cpu(
 819                    mpt3sas_base_get_sense_buffer_dma(ioc, smid)));
 820                 nvme_encap_request->ErrorResponseAllocationLength =
 821                                         cpu_to_le16(NVME_ERROR_RESPONSE_SIZE);
 822                 memset(ioc->ctl_cmds.sense, 0, NVME_ERROR_RESPONSE_SIZE);
 823                 ioc->build_nvme_prp(ioc, smid, nvme_encap_request,
 824                     data_out_dma, data_out_sz, data_in_dma, data_in_sz);
 825                 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
 826                         dtmprintk(ioc, pr_info(MPT3SAS_FMT "handle(0x%04x) :"
 827                             "ioctl failed due to device removal in progress\n",
 828                             ioc->name, device_handle));
 829                         mpt3sas_base_free_smid(ioc, smid);
 830                         ret = -EINVAL;
 831                         goto out;
 832                 }
 833                 mpt3sas_base_put_smid_nvme_encap(ioc, smid);
 834                 break;
 835         }
 836         case MPI2_FUNCTION_SCSI_IO_REQUEST:
 837         case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
 838         {
 839                 Mpi2SCSIIORequest_t *scsiio_request =
 840                     (Mpi2SCSIIORequest_t *)request;
 841                 scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
 842                 scsiio_request->SenseBufferLowAddress =
 843                     mpt3sas_base_get_sense_buffer_dma(ioc, smid);
 844                 memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
 845                 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
 846                         dtmprintk(ioc, pr_info(MPT3SAS_FMT
 847                                 "handle(0x%04x) :ioctl failed due to device removal in progress\n",
 848                                 ioc->name, device_handle));
 849                         mpt3sas_base_free_smid(ioc, smid);
 850                         ret = -EINVAL;
 851                         goto out;
 852                 }
 853                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
 854                     data_in_dma, data_in_sz);
 855                 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
 856                         ioc->put_smid_scsi_io(ioc, smid, device_handle);
 857                 else
 858                         mpt3sas_base_put_smid_default(ioc, smid);
 859                 break;
 860         }
 861         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 862         {
 863                 Mpi2SCSITaskManagementRequest_t *tm_request =
 864                     (Mpi2SCSITaskManagementRequest_t *)request;
 865
 866                 dtmprintk(ioc, pr_info(MPT3SAS_FMT
 867                         "TASK_MGMT: handle(0x%04x), task_type(0x%02x)\n",
 868                         ioc->name,
 869                     le16_to_cpu(tm_request->DevHandle), tm_request->TaskType));
 870                 ioc->got_task_abort_from_ioctl = 1;
 871                 if (tm_request->TaskType ==
 872                     MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
 873                     tm_request->TaskType ==
 874                     MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
 875                         if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
 876                                 mpt3sas_base_free_smid(ioc, smid);
 877                                 ioc->got_task_abort_from_ioctl = 0;
 878                                 goto out;
 879                         }
 880                 }
 881                 ioc->got_task_abort_from_ioctl = 0;
 882
 883                 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
 884                         dtmprintk(ioc, pr_info(MPT3SAS_FMT
 885                                 "handle(0x%04x) :ioctl failed due to device removal in progress\n",
 886                                 ioc->name, device_handle));
 887                         mpt3sas_base_free_smid(ioc, smid);
 888                         ret = -EINVAL;
 889                         goto out;
 890                 }
 891                 mpt3sas_scsih_set_tm_flag(ioc, le16_to_cpu(
 892                     tm_request->DevHandle));
 893                 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
 894                     data_in_dma, data_in_sz);
 895                 mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
 896                 break;
 897         }
 898         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 899         {
 900                 Mpi2SmpPassthroughRequest_t *smp_request =
 901                     (Mpi2SmpPassthroughRequest_t *)mpi_request;
 902                 u8 *data;
 903
 904                 /* ioc determines which port to use */
 905                 smp_request->PhysicalPort = 0xFF;
 906                 if (smp_request->PassthroughFlags &
 907                     MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
 908                         data = (u8 *)&smp_request->SGL;
 909                 else {
 910                         if (unlikely(data_out == NULL)) {
 911                                 pr_err("failure at %s:%d/%s()!\n",
 912                                     __FILE__, __LINE__, __func__);
 913                                 mpt3sas_base_free_smid(ioc, smid);
 914                                 ret = -EINVAL;
 915                                 goto out;
 916                         }
 917                         data = data_out;
 918                 }
 919
 920                 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
 921                         ioc->ioc_link_reset_in_progress = 1;
 922                         ioc->ignore_loginfos = 1;
 923                 }
 924                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
 925                     data_in_sz);
 926                 mpt3sas_base_put_smid_default(ioc, smid);
 927                 break;
 928         }
 929         case MPI2_FUNCTION_SATA_PASSTHROUGH:
 930         {
 931                 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
 932                         dtmprintk(ioc, pr_info(MPT3SAS_FMT
 933                                 "handle(0x%04x) :ioctl failed due to device removal in progress\n",
 934                                 ioc->name, device_handle));
 935                         mpt3sas_base_free_smid(ioc, smid);
 936                         ret = -EINVAL;
 937                         goto out;
 938                 }
 939                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
 940                     data_in_sz);
 941                 mpt3sas_base_put_smid_default(ioc, smid);
 942                 break;
 943         }
 944         case MPI2_FUNCTION_FW_DOWNLOAD:
 945         case MPI2_FUNCTION_FW_UPLOAD:
 946         {
 947                 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
 948                     data_in_sz);
 949                 mpt3sas_base_put_smid_default(ioc, smid);
 950                 break;
 951         }
 952         case MPI2_FUNCTION_TOOLBOX:
 953         {
 954                 Mpi2ToolboxCleanRequest_t *toolbox_request =
 955                         (Mpi2ToolboxCleanRequest_t *)mpi_request;
 956
 957                 if (toolbox_request->Tool == MPI2_TOOLBOX_DIAGNOSTIC_CLI_TOOL) {
 958                         ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
 959                                 data_in_dma, data_in_sz);
 960                 } else {
 961                         ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
 962                                 data_in_dma, data_in_sz);
 963                 }
 964                 mpt3sas_base_put_smid_default(ioc, smid);
 965                 break;
 966         }
 967         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 968         {
 969                 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
 970                     (Mpi2SasIoUnitControlRequest_t *)mpi_request;
 971
 972                 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
 973                     || sasiounit_request->Operation ==
 974                     MPI2_SAS_OP_PHY_LINK_RESET) {
 975                         ioc->ioc_link_reset_in_progress = 1;
 976                         ioc->ignore_loginfos = 1;
 977                 }
 978                 /* drop to default case for posting the request */
 979         }
 980                 /* fall through */
 981         default:
 982                 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
 983                     data_in_dma, data_in_sz);
 984                 mpt3sas_base_put_smid_default(ioc, smid);
 985                 break;
 986         }
 987
 988         if (karg.timeout < MPT3_IOCTL_DEFAULT_TIMEOUT)
 989                 timeout = MPT3_IOCTL_DEFAULT_TIMEOUT;
 990         else
 991                 timeout = karg.timeout;
 992         wait_for_completion_timeout(&ioc->ctl_cmds.done, timeout*HZ);
 993         if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
 994                 Mpi2SCSITaskManagementRequest_t *tm_request =
 995                     (Mpi2SCSITaskManagementRequest_t *)mpi_request;
 996                 mpt3sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
 997                     tm_request->DevHandle));
 998                 mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
 999         } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
1000             mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
1001                 ioc->ioc_link_reset_in_progress) {
1002                 ioc->ioc_link_reset_in_progress = 0;
1003                 ioc->ignore_loginfos = 0;
1004         }
1005         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
1006                 issue_reset =
1007                         mpt3sas_base_check_cmd_timeout(ioc,
1008                                 ioc->ctl_cmds.status, mpi_request,
1009                                 karg.data_sge_offset);
1010                 goto issue_host_reset;
1011         }
1012
1013         mpi_reply = ioc->ctl_cmds.reply;
1014
1015         if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
1016             (ioc->logging_level & MPT_DEBUG_TM)) {
1017                 Mpi2SCSITaskManagementReply_t *tm_reply =
1018                     (Mpi2SCSITaskManagementReply_t *)mpi_reply;
1019
1020                 pr_info(MPT3SAS_FMT "TASK_MGMT: " \
1021                     "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
1022                     "TerminationCount(0x%08x)\n", ioc->name,
1023                     le16_to_cpu(tm_reply->IOCStatus),
1024                     le32_to_cpu(tm_reply->IOCLogInfo),
1025                     le32_to_cpu(tm_reply->TerminationCount));
1026         }
1027
1028         /* copy out xdata to user */
1029         if (data_in_sz) {
1030                 if (copy_to_user(karg.data_in_buf_ptr, data_in,
1031                     data_in_sz)) {
1032                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
1033                             __LINE__, __func__);
1034                         ret = -ENODATA;
1035                         goto out;
1036                 }
1037         }
1038
1039         /* copy out reply message frame to user */
1040         if (karg.max_reply_bytes) {
1041                 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
1042                 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
1043                     sz)) {
1044                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
1045                             __LINE__, __func__);
1046                         ret = -ENODATA;
1047                         goto out;
1048                 }
1049         }
1050
1051         /* copy out sense/NVMe Error Response to user */
1052         if (karg.max_sense_bytes && (mpi_request->Function ==
1053             MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
1054             MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH || mpi_request->Function ==
1055             MPI2_FUNCTION_NVME_ENCAPSULATED)) {
1056                 if (karg.sense_data_ptr == NULL) {
1057                         pr_info(MPT3SAS_FMT "Response buffer provided"
1058                             " by application is NULL; Response data will"
1059                             " not be returned.\n", ioc->name);
1060                         goto out;
1061                 }
1062                 sz_arg = (mpi_request->Function ==
1063                 MPI2_FUNCTION_NVME_ENCAPSULATED) ? NVME_ERROR_RESPONSE_SIZE :
1064                                                         SCSI_SENSE_BUFFERSIZE;
1065                 sz = min_t(u32, karg.max_sense_bytes, sz_arg);
1066                 if (copy_to_user(karg.sense_data_ptr, ioc->ctl_cmds.sense,
1067                     sz)) {
1068                         pr_err("failure at %s:%d/%s()!\n", __FILE__,
1069                                 __LINE__, __func__);
1070                         ret = -ENODATA;
1071                         goto out;
1072                 }
1073         }
1074
1075  issue_host_reset:
1076         if (issue_reset) {
1077                 ret = -ENODATA;
1078                 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
1079                     mpi_request->Function ==
1080                     MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
1081                     mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH)) {
1082                         pr_info(MPT3SAS_FMT "issue target reset: handle = (0x%04x)\n",
1083                                 ioc->name,
1084                                 le16_to_cpu(mpi_request->FunctionDependent1));
1085                         mpt3sas_halt_firmware(ioc);
1086                         pcie_device = mpt3sas_get_pdev_by_handle(ioc,
1087                                 le16_to_cpu(mpi_request->FunctionDependent1));
1088                         if (pcie_device && (!ioc->tm_custom_handling))
1089                                 mpt3sas_scsih_issue_locked_tm(ioc,
1090                                   le16_to_cpu(mpi_request->FunctionDependent1),
1091                                   0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
1092                                   0, pcie_device->reset_timeout,
1093                                   tr_method);
1094                         else
1095                                 mpt3sas_scsih_issue_locked_tm(ioc,
1096                                   le16_to_cpu(mpi_request->FunctionDependent1),
1097                                   0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
1098                                   0, 30, MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET);
1099                 } else
1100                         mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1101         }
1102
1103  out:
1104         if (pcie_device)
1105                 pcie_device_put(pcie_device);
1106
1107         /* free memory associated with sg buffers */
1108         if (data_in)
1109                 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
1110                     data_in_dma);
1111
1112         if (data_out)
1113                 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
1114                     data_out_dma);
1115
1116         kfree(mpi_request);
1117         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1118         return ret;
1119 }
1120
1121 /**
1122  * _ctl_getiocinfo - main handler for MPT3IOCINFO opcode
1123  * @ioc: per adapter object
1124  * @arg: user space buffer containing ioctl content
1125  */
1126 static long
1127 _ctl_getiocinfo(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1128 {
1129         struct mpt3_ioctl_iocinfo karg;
1130
1131         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
1132             __func__));
1133
1134         memset(&karg, 0 , sizeof(karg));
1135         if (ioc->pfacts)
1136                 karg.port_number = ioc->pfacts[0].PortNumber;
1137         karg.hw_rev = ioc->pdev->revision;
1138         karg.pci_id = ioc->pdev->device;
1139         karg.subsystem_device = ioc->pdev->subsystem_device;
1140         karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
1141         karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
1142         karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
1143         karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
1144         karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
1145         karg.firmware_version = ioc->facts.FWVersion.Word;
1146         strcpy(karg.driver_version, ioc->driver_name);
1147         strcat(karg.driver_version, "-");
1148         switch  (ioc->hba_mpi_version_belonged) {
1149         case MPI2_VERSION:
1150                 if (ioc->is_warpdrive)
1151                         karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200;
1152                 else
1153                         karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
1154                 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
1155                 break;
1156         case MPI25_VERSION:
1157         case MPI26_VERSION:
1158                 if (ioc->is_gen35_ioc)
1159                         karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS35;
1160                 else
1161                         karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS3;
1162                 strcat(karg.driver_version, MPT3SAS_DRIVER_VERSION);
1163                 break;
1164         }
1165         karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
1166
1167         if (copy_to_user(arg, &karg, sizeof(karg))) {
1168                 pr_err("failure at %s:%d/%s()!\n",
1169                     __FILE__, __LINE__, __func__);
1170                 return -EFAULT;
1171         }
1172         return 0;
1173 }
1174
1175 /**
1176  * _ctl_eventquery - main handler for MPT3EVENTQUERY opcode
1177  * @ioc: per adapter object
1178  * @arg: user space buffer containing ioctl content
1179  */
1180 static long
1181 _ctl_eventquery(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1182 {
1183         struct mpt3_ioctl_eventquery karg;
1184
1185         if (copy_from_user(&karg, arg, sizeof(karg))) {
1186                 pr_err("failure at %s:%d/%s()!\n",
1187                     __FILE__, __LINE__, __func__);
1188                 return -EFAULT;
1189         }
1190
1191         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
1192             __func__));
1193
1194         karg.event_entries = MPT3SAS_CTL_EVENT_LOG_SIZE;
1195         memcpy(karg.event_types, ioc->event_type,
1196             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1197
1198         if (copy_to_user(arg, &karg, sizeof(karg))) {
1199                 pr_err("failure at %s:%d/%s()!\n",
1200                     __FILE__, __LINE__, __func__);
1201                 return -EFAULT;
1202         }
1203         return 0;
1204 }
1205
1206 /**
1207  * _ctl_eventenable - main handler for MPT3EVENTENABLE opcode
1208  * @ioc: per adapter object
1209  * @arg: user space buffer containing ioctl content
1210  */
1211 static long
1212 _ctl_eventenable(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1213 {
1214         struct mpt3_ioctl_eventenable karg;
1215
1216         if (copy_from_user(&karg, arg, sizeof(karg))) {
1217                 pr_err("failure at %s:%d/%s()!\n",
1218                     __FILE__, __LINE__, __func__);
1219                 return -EFAULT;
1220         }
1221
1222         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
1223             __func__));
1224
1225         memcpy(ioc->event_type, karg.event_types,
1226             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1227         mpt3sas_base_validate_event_type(ioc, ioc->event_type);
1228
1229         if (ioc->event_log)
1230                 return 0;
1231         /* initialize event_log */
1232         ioc->event_context = 0;
1233         ioc->aen_event_read_flag = 0;
1234         ioc->event_log = kcalloc(MPT3SAS_CTL_EVENT_LOG_SIZE,
1235             sizeof(struct MPT3_IOCTL_EVENTS), GFP_KERNEL);
1236         if (!ioc->event_log) {
1237                 pr_err("failure at %s:%d/%s()!\n",
1238                     __FILE__, __LINE__, __func__);
1239                 return -ENOMEM;
1240         }
1241         return 0;
1242 }
1243
1244 /**
1245  * _ctl_eventreport - main handler for MPT3EVENTREPORT opcode
1246  * @ioc: per adapter object
1247  * @arg: user space buffer containing ioctl content
1248  */
1249 static long
1250 _ctl_eventreport(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1251 {
1252         struct mpt3_ioctl_eventreport karg;
1253         u32 number_bytes, max_events, max;
1254         struct mpt3_ioctl_eventreport __user *uarg = arg;
1255
1256         if (copy_from_user(&karg, arg, sizeof(karg))) {
1257                 pr_err("failure at %s:%d/%s()!\n",
1258                     __FILE__, __LINE__, __func__);
1259                 return -EFAULT;
1260         }
1261
1262         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
1263             __func__));
1264
1265         number_bytes = karg.hdr.max_data_size -
1266             sizeof(struct mpt3_ioctl_header);
1267         max_events = number_bytes/sizeof(struct MPT3_IOCTL_EVENTS);
1268         max = min_t(u32, MPT3SAS_CTL_EVENT_LOG_SIZE, max_events);
1269
1270         /* If fewer than 1 event is requested, there must have
1271          * been some type of error.
1272          */
1273         if (!max || !ioc->event_log)
1274                 return -ENODATA;
1275
1276         number_bytes = max * sizeof(struct MPT3_IOCTL_EVENTS);
1277         if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1278                 pr_err("failure at %s:%d/%s()!\n",
1279                     __FILE__, __LINE__, __func__);
1280                 return -EFAULT;
1281         }
1282
1283         /* reset flag so SIGIO can restart */
1284         ioc->aen_event_read_flag = 0;
1285         return 0;
1286 }
1287
1288 /**
1289  * _ctl_do_reset - main handler for MPT3HARDRESET opcode
1290  * @ioc: per adapter object
1291  * @arg: user space buffer containing ioctl content
1292  */
1293 static long
1294 _ctl_do_reset(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1295 {
1296         struct mpt3_ioctl_diag_reset karg;
1297         int retval;
1298
1299         if (copy_from_user(&karg, arg, sizeof(karg))) {
1300                 pr_err("failure at %s:%d/%s()!\n",
1301                     __FILE__, __LINE__, __func__);
1302                 return -EFAULT;
1303         }
1304
1305         if (ioc->shost_recovery || ioc->pci_error_recovery ||
1306             ioc->is_driver_loading)
1307                 return -EAGAIN;
1308
1309         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
1310             __func__));
1311
1312         retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1313         pr_info(MPT3SAS_FMT "host reset: %s\n",
1314             ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1315         return 0;
1316 }
1317
1318 /**
1319  * _ctl_btdh_search_sas_device - searching for sas device
1320  * @ioc: per adapter object
1321  * @btdh: btdh ioctl payload
1322  */
1323 static int
1324 _ctl_btdh_search_sas_device(struct MPT3SAS_ADAPTER *ioc,
1325         struct mpt3_ioctl_btdh_mapping *btdh)
1326 {
1327         struct _sas_device *sas_device;
1328         unsigned long flags;
1329         int rc = 0;
1330
1331         if (list_empty(&ioc->sas_device_list))
1332                 return rc;
1333
1334         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1335         list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1336                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1337                     btdh->handle == sas_device->handle) {
1338                         btdh->bus = sas_device->channel;
1339                         btdh->id = sas_device->id;
1340                         rc = 1;
1341                         goto out;
1342                 } else if (btdh->bus == sas_device->channel && btdh->id ==
1343                     sas_device->id && btdh->handle == 0xFFFF) {
1344                         btdh->handle = sas_device->handle;
1345                         rc = 1;
1346                         goto out;
1347                 }
1348         }
1349  out:
1350         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1351         return rc;
1352 }
1353
1354 /**
1355  * _ctl_btdh_search_pcie_device - searching for pcie device
1356  * @ioc: per adapter object
1357  * @btdh: btdh ioctl payload
1358  */
1359 static int
1360 _ctl_btdh_search_pcie_device(struct MPT3SAS_ADAPTER *ioc,
1361         struct mpt3_ioctl_btdh_mapping *btdh)
1362 {
1363         struct _pcie_device *pcie_device;
1364         unsigned long flags;
1365         int rc = 0;
1366
1367         if (list_empty(&ioc->pcie_device_list))
1368                 return rc;
1369
1370         spin_lock_irqsave(&ioc->pcie_device_lock, flags);
1371         list_for_each_entry(pcie_device, &ioc->pcie_device_list, list) {
1372                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1373                            btdh->handle == pcie_device->handle) {
1374                         btdh->bus = pcie_device->channel;
1375                         btdh->id = pcie_device->id;
1376                         rc = 1;
1377                         goto out;
1378                 } else if (btdh->bus == pcie_device->channel && btdh->id ==
1379                            pcie_device->id && btdh->handle == 0xFFFF) {
1380                         btdh->handle = pcie_device->handle;
1381                         rc = 1;
1382                         goto out;
1383                 }
1384         }
1385  out:
1386         spin_unlock_irqrestore(&ioc->pcie_device_lock, flags);
1387         return rc;
1388 }
1389
1390 /**
1391  * _ctl_btdh_search_raid_device - searching for raid device
1392  * @ioc: per adapter object
1393  * @btdh: btdh ioctl payload
1394  */
1395 static int
1396 _ctl_btdh_search_raid_device(struct MPT3SAS_ADAPTER *ioc,
1397         struct mpt3_ioctl_btdh_mapping *btdh)
1398 {
1399         struct _raid_device *raid_device;
1400         unsigned long flags;
1401         int rc = 0;
1402
1403         if (list_empty(&ioc->raid_device_list))
1404                 return rc;
1405
1406         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1407         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1408                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1409                     btdh->handle == raid_device->handle) {
1410                         btdh->bus = raid_device->channel;
1411                         btdh->id = raid_device->id;
1412                         rc = 1;
1413                         goto out;
1414                 } else if (btdh->bus == raid_device->channel && btdh->id ==
1415                     raid_device->id && btdh->handle == 0xFFFF) {
1416                         btdh->handle = raid_device->handle;
1417                         rc = 1;
1418                         goto out;
1419                 }
1420         }
1421  out:
1422         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1423         return rc;
1424 }
1425
1426 /**
1427  * _ctl_btdh_mapping - main handler for MPT3BTDHMAPPING opcode
1428  * @ioc: per adapter object
1429  * @arg: user space buffer containing ioctl content
1430  */
1431 static long
1432 _ctl_btdh_mapping(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1433 {
1434         struct mpt3_ioctl_btdh_mapping karg;
1435         int rc;
1436
1437         if (copy_from_user(&karg, arg, sizeof(karg))) {
1438                 pr_err("failure at %s:%d/%s()!\n",
1439                     __FILE__, __LINE__, __func__);
1440                 return -EFAULT;
1441         }
1442
1443         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1444             __func__));
1445
1446         rc = _ctl_btdh_search_sas_device(ioc, &karg);
1447         if (!rc)
1448                 rc = _ctl_btdh_search_pcie_device(ioc, &karg);
1449         if (!rc)
1450                 _ctl_btdh_search_raid_device(ioc, &karg);
1451
1452         if (copy_to_user(arg, &karg, sizeof(karg))) {
1453                 pr_err("failure at %s:%d/%s()!\n",
1454                     __FILE__, __LINE__, __func__);
1455                 return -EFAULT;
1456         }
1457         return 0;
1458 }
1459
1460 /**
1461  * _ctl_diag_capability - return diag buffer capability
1462  * @ioc: per adapter object
1463  * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1464  *
1465  * returns 1 when diag buffer support is enabled in firmware
1466  */
1467 static u8
1468 _ctl_diag_capability(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type)
1469 {
1470         u8 rc = 0;
1471
1472         switch (buffer_type) {
1473         case MPI2_DIAG_BUF_TYPE_TRACE:
1474                 if (ioc->facts.IOCCapabilities &
1475                     MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1476                         rc = 1;
1477                 break;
1478         case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1479                 if (ioc->facts.IOCCapabilities &
1480                     MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1481                         rc = 1;
1482                 break;
1483         case MPI2_DIAG_BUF_TYPE_EXTENDED:
1484                 if (ioc->facts.IOCCapabilities &
1485                     MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
1486                         rc = 1;
1487         }
1488
1489         return rc;
1490 }
1491
1492
1493 /**
1494  * _ctl_diag_register_2 - wrapper for registering diag buffer support
1495  * @ioc: per adapter object
1496  * @diag_register: the diag_register struct passed in from user space
1497  *
1498  */
1499 static long
1500 _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc,
1501         struct mpt3_diag_register *diag_register)
1502 {
1503         int rc, i;
1504         void *request_data = NULL;
1505         dma_addr_t request_data_dma;
1506         u32 request_data_sz = 0;
1507         Mpi2DiagBufferPostRequest_t *mpi_request;
1508         Mpi2DiagBufferPostReply_t *mpi_reply;
1509         u8 buffer_type;
1510         u16 smid;
1511         u16 ioc_status;
1512         u32 ioc_state;
1513         u8 issue_reset = 0;
1514
1515         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1516             __func__));
1517
1518         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1519         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1520                 pr_err(MPT3SAS_FMT
1521                     "%s: failed due to ioc not operational\n",
1522                     ioc->name, __func__);
1523                 rc = -EAGAIN;
1524                 goto out;
1525         }
1526
1527         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
1528                 pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
1529                     ioc->name, __func__);
1530                 rc = -EAGAIN;
1531                 goto out;
1532         }
1533
1534         buffer_type = diag_register->buffer_type;
1535         if (!_ctl_diag_capability(ioc, buffer_type)) {
1536                 pr_err(MPT3SAS_FMT
1537                         "%s: doesn't have capability for buffer_type(0x%02x)\n",
1538                         ioc->name, __func__, buffer_type);
1539                 return -EPERM;
1540         }
1541
1542         if (ioc->diag_buffer_status[buffer_type] &
1543             MPT3_DIAG_BUFFER_IS_REGISTERED) {
1544                 pr_err(MPT3SAS_FMT
1545                         "%s: already has a registered buffer for buffer_type(0x%02x)\n",
1546                         ioc->name, __func__,
1547                     buffer_type);
1548                 return -EINVAL;
1549         }
1550
1551         if (diag_register->requested_buffer_size % 4)  {
1552                 pr_err(MPT3SAS_FMT
1553                         "%s: the requested_buffer_size is not 4 byte aligned\n",
1554                         ioc->name, __func__);
1555                 return -EINVAL;
1556         }
1557
1558         smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1559         if (!smid) {
1560                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1561                     ioc->name, __func__);
1562                 rc = -EAGAIN;
1563                 goto out;
1564         }
1565
1566         rc = 0;
1567         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
1568         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1569         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1570         ioc->ctl_cmds.smid = smid;
1571
1572         request_data = ioc->diag_buffer[buffer_type];
1573         request_data_sz = diag_register->requested_buffer_size;
1574         ioc->unique_id[buffer_type] = diag_register->unique_id;
1575         ioc->diag_buffer_status[buffer_type] = 0;
1576         memcpy(ioc->product_specific[buffer_type],
1577             diag_register->product_specific, MPT3_PRODUCT_SPECIFIC_DWORDS);
1578         ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
1579
1580         if (request_data) {
1581                 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1582                 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1583                         pci_free_consistent(ioc->pdev,
1584                             ioc->diag_buffer_sz[buffer_type],
1585                             request_data, request_data_dma);
1586                         request_data = NULL;
1587                 }
1588         }
1589
1590         if (request_data == NULL) {
1591                 ioc->diag_buffer_sz[buffer_type] = 0;
1592                 ioc->diag_buffer_dma[buffer_type] = 0;
1593                 request_data = pci_alloc_consistent(
1594                         ioc->pdev, request_data_sz, &request_data_dma);
1595                 if (request_data == NULL) {
1596                         pr_err(MPT3SAS_FMT "%s: failed allocating memory" \
1597                             " for diag buffers, requested size(%d)\n",
1598                             ioc->name, __func__, request_data_sz);
1599                         mpt3sas_base_free_smid(ioc, smid);
1600                         return -ENOMEM;
1601                 }
1602                 ioc->diag_buffer[buffer_type] = request_data;
1603                 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1604                 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1605         }
1606
1607         mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1608         mpi_request->BufferType = diag_register->buffer_type;
1609         mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
1610         mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1611         mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1612         mpi_request->VF_ID = 0; /* TODO */
1613         mpi_request->VP_ID = 0;
1614
1615         dctlprintk(ioc, pr_info(MPT3SAS_FMT
1616                 "%s: diag_buffer(0x%p), dma(0x%llx), sz(%d)\n",
1617                 ioc->name, __func__, request_data,
1618             (unsigned long long)request_data_dma,
1619             le32_to_cpu(mpi_request->BufferLength)));
1620
1621         for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
1622                 mpi_request->ProductSpecific[i] =
1623                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
1624
1625         init_completion(&ioc->ctl_cmds.done);
1626         mpt3sas_base_put_smid_default(ioc, smid);
1627         wait_for_completion_timeout(&ioc->ctl_cmds.done,
1628             MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
1629
1630         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
1631                 issue_reset =
1632                         mpt3sas_base_check_cmd_timeout(ioc,
1633                                 ioc->ctl_cmds.status, mpi_request,
1634                                 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1635                 goto issue_host_reset;
1636         }
1637
1638         /* process the completed Reply Message Frame */
1639         if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
1640                 pr_err(MPT3SAS_FMT "%s: no reply message\n",
1641                     ioc->name, __func__);
1642                 rc = -EFAULT;
1643                 goto out;
1644         }
1645
1646         mpi_reply = ioc->ctl_cmds.reply;
1647         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1648
1649         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1650                 ioc->diag_buffer_status[buffer_type] |=
1651                         MPT3_DIAG_BUFFER_IS_REGISTERED;
1652                 dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: success\n",
1653                     ioc->name, __func__));
1654         } else {
1655                 pr_info(MPT3SAS_FMT
1656                         "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
1657                         ioc->name, __func__,
1658                     ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1659                 rc = -EFAULT;
1660         }
1661
1662  issue_host_reset:
1663         if (issue_reset)
1664                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1665
1666  out:
1667
1668         if (rc && request_data)
1669                 pci_free_consistent(ioc->pdev, request_data_sz,
1670                     request_data, request_data_dma);
1671
1672         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1673         return rc;
1674 }
1675
1676 /**
1677  * mpt3sas_enable_diag_buffer - enabling diag_buffers support driver load time
1678  * @ioc: per adapter object
1679  * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
1680  *
1681  * This is called when command line option diag_buffer_enable is enabled
1682  * at driver load time.
1683  */
1684 void
1685 mpt3sas_enable_diag_buffer(struct MPT3SAS_ADAPTER *ioc, u8 bits_to_register)
1686 {
1687         struct mpt3_diag_register diag_register;
1688
1689         memset(&diag_register, 0, sizeof(struct mpt3_diag_register));
1690
1691         if (bits_to_register & 1) {
1692                 pr_info(MPT3SAS_FMT "registering trace buffer support\n",
1693                     ioc->name);
1694                 ioc->diag_trigger_master.MasterData =
1695                     (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET);
1696                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
1697                 /* register for 2MB buffers  */
1698                 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1699                 diag_register.unique_id = 0x7075900;
1700                 _ctl_diag_register_2(ioc,  &diag_register);
1701         }
1702
1703         if (bits_to_register & 2) {
1704                 pr_info(MPT3SAS_FMT "registering snapshot buffer support\n",
1705                     ioc->name);
1706                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
1707                 /* register for 2MB buffers  */
1708                 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1709                 diag_register.unique_id = 0x7075901;
1710                 _ctl_diag_register_2(ioc,  &diag_register);
1711         }
1712
1713         if (bits_to_register & 4) {
1714                 pr_info(MPT3SAS_FMT "registering extended buffer support\n",
1715                     ioc->name);
1716                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
1717                 /* register for 2MB buffers  */
1718                 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1719                 diag_register.unique_id = 0x7075901;
1720                 _ctl_diag_register_2(ioc,  &diag_register);
1721         }
1722 }
1723
1724 /**
1725  * _ctl_diag_register - application register with driver
1726  * @ioc: per adapter object
1727  * @arg: user space buffer containing ioctl content
1728  *
1729  * This will allow the driver to setup any required buffers that will be
1730  * needed by firmware to communicate with the driver.
1731  */
1732 static long
1733 _ctl_diag_register(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1734 {
1735         struct mpt3_diag_register karg;
1736         long rc;
1737
1738         if (copy_from_user(&karg, arg, sizeof(karg))) {
1739                 pr_err("failure at %s:%d/%s()!\n",
1740                     __FILE__, __LINE__, __func__);
1741                 return -EFAULT;
1742         }
1743
1744         rc = _ctl_diag_register_2(ioc, &karg);
1745         return rc;
1746 }
1747
1748 /**
1749  * _ctl_diag_unregister - application unregister with driver
1750  * @ioc: per adapter object
1751  * @arg: user space buffer containing ioctl content
1752  *
1753  * This will allow the driver to cleanup any memory allocated for diag
1754  * messages and to free up any resources.
1755  */
1756 static long
1757 _ctl_diag_unregister(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1758 {
1759         struct mpt3_diag_unregister karg;
1760         void *request_data;
1761         dma_addr_t request_data_dma;
1762         u32 request_data_sz;
1763         u8 buffer_type;
1764
1765         if (copy_from_user(&karg, arg, sizeof(karg))) {
1766                 pr_err("failure at %s:%d/%s()!\n",
1767                     __FILE__, __LINE__, __func__);
1768                 return -EFAULT;
1769         }
1770
1771         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1772             __func__));
1773
1774         buffer_type = karg.unique_id & 0x000000ff;
1775         if (!_ctl_diag_capability(ioc, buffer_type)) {
1776                 pr_err(MPT3SAS_FMT
1777                         "%s: doesn't have capability for buffer_type(0x%02x)\n",
1778                         ioc->name, __func__, buffer_type);
1779                 return -EPERM;
1780         }
1781
1782         if ((ioc->diag_buffer_status[buffer_type] &
1783             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1784                 pr_err(MPT3SAS_FMT
1785                         "%s: buffer_type(0x%02x) is not registered\n",
1786                         ioc->name, __func__, buffer_type);
1787                 return -EINVAL;
1788         }
1789         if ((ioc->diag_buffer_status[buffer_type] &
1790             MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
1791                 pr_err(MPT3SAS_FMT
1792                         "%s: buffer_type(0x%02x) has not been released\n",
1793                         ioc->name, __func__, buffer_type);
1794                 return -EINVAL;
1795         }
1796
1797         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1798                 pr_err(MPT3SAS_FMT
1799                         "%s: unique_id(0x%08x) is not registered\n",
1800                         ioc->name, __func__, karg.unique_id);
1801                 return -EINVAL;
1802         }
1803
1804         request_data = ioc->diag_buffer[buffer_type];
1805         if (!request_data) {
1806                 pr_err(MPT3SAS_FMT
1807                         "%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
1808                         ioc->name, __func__, buffer_type);
1809                 return -ENOMEM;
1810         }
1811
1812         request_data_sz = ioc->diag_buffer_sz[buffer_type];
1813         request_data_dma = ioc->diag_buffer_dma[buffer_type];
1814         pci_free_consistent(ioc->pdev, request_data_sz,
1815             request_data, request_data_dma);
1816         ioc->diag_buffer[buffer_type] = NULL;
1817         ioc->diag_buffer_status[buffer_type] = 0;
1818         return 0;
1819 }
1820
1821 /**
1822  * _ctl_diag_query - query relevant info associated with diag buffers
1823  * @ioc: per adapter object
1824  * @arg: user space buffer containing ioctl content
1825  *
1826  * The application will send only buffer_type and unique_id.  Driver will
1827  * inspect unique_id first, if valid, fill in all the info.  If unique_id is
1828  * 0x00, the driver will return info specified by Buffer Type.
1829  */
1830 static long
1831 _ctl_diag_query(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1832 {
1833         struct mpt3_diag_query karg;
1834         void *request_data;
1835         int i;
1836         u8 buffer_type;
1837
1838         if (copy_from_user(&karg, arg, sizeof(karg))) {
1839                 pr_err("failure at %s:%d/%s()!\n",
1840                     __FILE__, __LINE__, __func__);
1841                 return -EFAULT;
1842         }
1843
1844         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1845             __func__));
1846
1847         karg.application_flags = 0;
1848         buffer_type = karg.buffer_type;
1849
1850         if (!_ctl_diag_capability(ioc, buffer_type)) {
1851                 pr_err(MPT3SAS_FMT
1852                         "%s: doesn't have capability for buffer_type(0x%02x)\n",
1853                         ioc->name, __func__, buffer_type);
1854                 return -EPERM;
1855         }
1856
1857         if ((ioc->diag_buffer_status[buffer_type] &
1858             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1859                 pr_err(MPT3SAS_FMT
1860                         "%s: buffer_type(0x%02x) is not registered\n",
1861                         ioc->name, __func__, buffer_type);
1862                 return -EINVAL;
1863         }
1864
1865         if (karg.unique_id & 0xffffff00) {
1866                 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1867                         pr_err(MPT3SAS_FMT
1868                                 "%s: unique_id(0x%08x) is not registered\n",
1869                                 ioc->name, __func__, karg.unique_id);
1870                         return -EINVAL;
1871                 }
1872         }
1873
1874         request_data = ioc->diag_buffer[buffer_type];
1875         if (!request_data) {
1876                 pr_err(MPT3SAS_FMT
1877                         "%s: doesn't have buffer for buffer_type(0x%02x)\n",
1878                         ioc->name, __func__, buffer_type);
1879                 return -ENOMEM;
1880         }
1881
1882         if (ioc->diag_buffer_status[buffer_type] & MPT3_DIAG_BUFFER_IS_RELEASED)
1883                 karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED |
1884                     MPT3_APP_FLAGS_BUFFER_VALID);
1885         else
1886                 karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED |
1887                     MPT3_APP_FLAGS_BUFFER_VALID |
1888                     MPT3_APP_FLAGS_FW_BUFFER_ACCESS);
1889
1890         for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
1891                 karg.product_specific[i] =
1892                     ioc->product_specific[buffer_type][i];
1893
1894         karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1895         karg.driver_added_buffer_size = 0;
1896         karg.unique_id = ioc->unique_id[buffer_type];
1897         karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1898
1899         if (copy_to_user(arg, &karg, sizeof(struct mpt3_diag_query))) {
1900                 pr_err(MPT3SAS_FMT
1901                         "%s: unable to write mpt3_diag_query data @ %p\n",
1902                         ioc->name, __func__, arg);
1903                 return -EFAULT;
1904         }
1905         return 0;
1906 }
1907
1908 /**
1909  * mpt3sas_send_diag_release - Diag Release Message
1910  * @ioc: per adapter object
1911  * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1912  * @issue_reset: specifies whether host reset is required.
1913  *
1914  */
1915 int
1916 mpt3sas_send_diag_release(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type,
1917         u8 *issue_reset)
1918 {
1919         Mpi2DiagReleaseRequest_t *mpi_request;
1920         Mpi2DiagReleaseReply_t *mpi_reply;
1921         u16 smid;
1922         u16 ioc_status;
1923         u32 ioc_state;
1924         int rc;
1925
1926         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
1927             __func__));
1928
1929         rc = 0;
1930         *issue_reset = 0;
1931
1932         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1933         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1934                 if (ioc->diag_buffer_status[buffer_type] &
1935                     MPT3_DIAG_BUFFER_IS_REGISTERED)
1936                         ioc->diag_buffer_status[buffer_type] |=
1937                             MPT3_DIAG_BUFFER_IS_RELEASED;
1938                 dctlprintk(ioc, pr_info(MPT3SAS_FMT
1939                         "%s: skipping due to FAULT state\n", ioc->name,
1940                     __func__));
1941                 rc = -EAGAIN;
1942                 goto out;
1943         }
1944
1945         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
1946                 pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
1947                     ioc->name, __func__);
1948                 rc = -EAGAIN;
1949                 goto out;
1950         }
1951
1952         smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1953         if (!smid) {
1954                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1955                     ioc->name, __func__);
1956                 rc = -EAGAIN;
1957                 goto out;
1958         }
1959
1960         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
1961         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1962         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1963         ioc->ctl_cmds.smid = smid;
1964
1965         mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1966         mpi_request->BufferType = buffer_type;
1967         mpi_request->VF_ID = 0; /* TODO */
1968         mpi_request->VP_ID = 0;
1969
1970         init_completion(&ioc->ctl_cmds.done);
1971         mpt3sas_base_put_smid_default(ioc, smid);
1972         wait_for_completion_timeout(&ioc->ctl_cmds.done,
1973             MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
1974
1975         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
1976                 *issue_reset = mpt3sas_base_check_cmd_timeout(ioc,
1977                                 ioc->ctl_cmds.status, mpi_request,
1978                                 sizeof(Mpi2DiagReleaseRequest_t)/4);
1979                 rc = -EFAULT;
1980                 goto out;
1981         }
1982
1983         /* process the completed Reply Message Frame */
1984         if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
1985                 pr_err(MPT3SAS_FMT "%s: no reply message\n",
1986                     ioc->name, __func__);
1987                 rc = -EFAULT;
1988                 goto out;
1989         }
1990
1991         mpi_reply = ioc->ctl_cmds.reply;
1992         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1993
1994         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1995                 ioc->diag_buffer_status[buffer_type] |=
1996                     MPT3_DIAG_BUFFER_IS_RELEASED;
1997                 dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: success\n",
1998                     ioc->name, __func__));
1999         } else {
2000                 pr_info(MPT3SAS_FMT
2001                         "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
2002                         ioc->name, __func__,
2003                     ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
2004                 rc = -EFAULT;
2005         }
2006
2007  out:
2008         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
2009         return rc;
2010 }
2011
2012 /**
2013  * _ctl_diag_release - request to send Diag Release Message to firmware
2014  * @ioc: ?
2015  * @arg: user space buffer containing ioctl content
2016  *
2017  * This allows ownership of the specified buffer to returned to the driver,
2018  * allowing an application to read the buffer without fear that firmware is
2019  * overwriting information in the buffer.
2020  */
2021 static long
2022 _ctl_diag_release(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
2023 {
2024         struct mpt3_diag_release karg;
2025         void *request_data;
2026         int rc;
2027         u8 buffer_type;
2028         u8 issue_reset = 0;
2029
2030         if (copy_from_user(&karg, arg, sizeof(karg))) {
2031                 pr_err("failure at %s:%d/%s()!\n",
2032                     __FILE__, __LINE__, __func__);
2033                 return -EFAULT;
2034         }
2035
2036         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2037             __func__));
2038
2039         buffer_type = karg.unique_id & 0x000000ff;
2040         if (!_ctl_diag_capability(ioc, buffer_type)) {
2041                 pr_err(MPT3SAS_FMT
2042                         "%s: doesn't have capability for buffer_type(0x%02x)\n",
2043                         ioc->name, __func__, buffer_type);
2044                 return -EPERM;
2045         }
2046
2047         if ((ioc->diag_buffer_status[buffer_type] &
2048             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
2049                 pr_err(MPT3SAS_FMT
2050                         "%s: buffer_type(0x%02x) is not registered\n",
2051                         ioc->name, __func__, buffer_type);
2052                 return -EINVAL;
2053         }
2054
2055         if (karg.unique_id != ioc->unique_id[buffer_type]) {
2056                 pr_err(MPT3SAS_FMT
2057                         "%s: unique_id(0x%08x) is not registered\n",
2058                         ioc->name, __func__, karg.unique_id);
2059                 return -EINVAL;
2060         }
2061
2062         if (ioc->diag_buffer_status[buffer_type] &
2063             MPT3_DIAG_BUFFER_IS_RELEASED) {
2064                 pr_err(MPT3SAS_FMT
2065                         "%s: buffer_type(0x%02x) is already released\n",
2066                         ioc->name, __func__,
2067                     buffer_type);
2068                 return 0;
2069         }
2070
2071         request_data = ioc->diag_buffer[buffer_type];
2072
2073         if (!request_data) {
2074                 pr_err(MPT3SAS_FMT
2075                         "%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
2076                         ioc->name, __func__, buffer_type);
2077                 return -ENOMEM;
2078         }
2079
2080         /* buffers were released by due to host reset */
2081         if ((ioc->diag_buffer_status[buffer_type] &
2082             MPT3_DIAG_BUFFER_IS_DIAG_RESET)) {
2083                 ioc->diag_buffer_status[buffer_type] |=
2084                     MPT3_DIAG_BUFFER_IS_RELEASED;
2085                 ioc->diag_buffer_status[buffer_type] &=
2086                     ~MPT3_DIAG_BUFFER_IS_DIAG_RESET;
2087                 pr_err(MPT3SAS_FMT
2088                         "%s: buffer_type(0x%02x) was released due to host reset\n",
2089                         ioc->name, __func__, buffer_type);
2090                 return 0;
2091         }
2092
2093         rc = mpt3sas_send_diag_release(ioc, buffer_type, &issue_reset);
2094
2095         if (issue_reset)
2096                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2097
2098         return rc;
2099 }
2100
2101 /**
2102  * _ctl_diag_read_buffer - request for copy of the diag buffer
2103  * @ioc: per adapter object
2104  * @arg: user space buffer containing ioctl content
2105  */
2106 static long
2107 _ctl_diag_read_buffer(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
2108 {
2109         struct mpt3_diag_read_buffer karg;
2110         struct mpt3_diag_read_buffer __user *uarg = arg;
2111         void *request_data, *diag_data;
2112         Mpi2DiagBufferPostRequest_t *mpi_request;
2113         Mpi2DiagBufferPostReply_t *mpi_reply;
2114         int rc, i;
2115         u8 buffer_type;
2116         unsigned long request_size, copy_size;
2117         u16 smid;
2118         u16 ioc_status;
2119         u8 issue_reset = 0;
2120
2121         if (copy_from_user(&karg, arg, sizeof(karg))) {
2122                 pr_err("failure at %s:%d/%s()!\n",
2123                     __FILE__, __LINE__, __func__);
2124                 return -EFAULT;
2125         }
2126
2127         dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
2128             __func__));
2129
2130         buffer_type = karg.unique_id & 0x000000ff;
2131         if (!_ctl_diag_capability(ioc, buffer_type)) {
2132                 pr_err(MPT3SAS_FMT
2133                         "%s: doesn't have capability for buffer_type(0x%02x)\n",
2134                         ioc->name, __func__, buffer_type);
2135                 return -EPERM;
2136         }
2137
2138         if (karg.unique_id != ioc->unique_id[buffer_type]) {
2139                 pr_err(MPT3SAS_FMT
2140                         "%s: unique_id(0x%08x) is not registered\n",
2141                         ioc->name, __func__, karg.unique_id);
2142                 return -EINVAL;
2143         }
2144
2145         request_data = ioc->diag_buffer[buffer_type];
2146         if (!request_data) {
2147                 pr_err(MPT3SAS_FMT
2148                         "%s: doesn't have buffer for buffer_type(0x%02x)\n",
2149                         ioc->name, __func__, buffer_type);
2150                 return -ENOMEM;
2151         }
2152
2153         request_size = ioc->diag_buffer_sz[buffer_type];
2154
2155         if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
2156                 pr_err(MPT3SAS_FMT "%s: either the starting_offset " \
2157                     "or bytes_to_read are not 4 byte aligned\n", ioc->name,
2158                     __func__);
2159                 return -EINVAL;
2160         }
2161
2162         if (karg.starting_offset > request_size)
2163                 return -EINVAL;
2164
2165         diag_data = (void *)(request_data + karg.starting_offset);
2166         dctlprintk(ioc, pr_info(MPT3SAS_FMT
2167                 "%s: diag_buffer(%p), offset(%d), sz(%d)\n",
2168                 ioc->name, __func__,
2169             diag_data, karg.starting_offset, karg.bytes_to_read));
2170
2171         /* Truncate data on requests that are too large */
2172         if ((diag_data + karg.bytes_to_read < diag_data) ||
2173             (diag_data + karg.bytes_to_read > request_data + request_size))
2174                 copy_size = request_size - karg.starting_offset;
2175         else
2176                 copy_size = karg.bytes_to_read;
2177
2178         if (copy_to_user((void __user *)uarg->diagnostic_data,
2179             diag_data, copy_size)) {
2180                 pr_err(MPT3SAS_FMT
2181                         "%s: Unable to write mpt_diag_read_buffer_t data @ %p\n",
2182                         ioc->name, __func__, diag_data);
2183                 return -EFAULT;
2184         }
2185
2186         if ((karg.flags & MPT3_FLAGS_REREGISTER) == 0)
2187                 return 0;
2188
2189         dctlprintk(ioc, pr_info(MPT3SAS_FMT
2190                 "%s: Reregister buffer_type(0x%02x)\n",
2191                 ioc->name, __func__, buffer_type));
2192         if ((ioc->diag_buffer_status[buffer_type] &
2193             MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
2194                 dctlprintk(ioc, pr_info(MPT3SAS_FMT
2195                         "%s: buffer_type(0x%02x) is still registered\n",
2196                         ioc->name, __func__, buffer_type));
2197                 return 0;
2198         }
2199         /* Get a free request frame and save the message context.
2200         */
2201
2202         if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
2203                 pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
2204                     ioc->name, __func__);
2205                 rc = -EAGAIN;
2206                 goto out;
2207         }
2208
2209         smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
2210         if (!smid) {
2211                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
2212                     ioc->name, __func__);
2213                 rc = -EAGAIN;
2214                 goto out;
2215         }
2216
2217         rc = 0;
2218         ioc->ctl_cmds.status = MPT3_CMD_PENDING;
2219         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
2220         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2221         ioc->ctl_cmds.smid = smid;
2222
2223         mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
2224         mpi_request->BufferType = buffer_type;
2225         mpi_request->BufferLength =
2226             cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
2227         mpi_request->BufferAddress =
2228             cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
2229         for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
2230                 mpi_request->ProductSpecific[i] =
2231                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
2232         mpi_request->VF_ID = 0; /* TODO */
2233         mpi_request->VP_ID = 0;
2234
2235         init_completion(&ioc->ctl_cmds.done);
2236         mpt3sas_base_put_smid_default(ioc, smid);
2237         wait_for_completion_timeout(&ioc->ctl_cmds.done,
2238             MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
2239
2240         if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
2241                 issue_reset =
2242                         mpt3sas_base_check_cmd_timeout(ioc,
2243                                 ioc->ctl_cmds.status, mpi_request,
2244                                 sizeof(Mpi2DiagBufferPostRequest_t)/4);
2245                 goto issue_host_reset;
2246         }
2247
2248         /* process the completed Reply Message Frame */
2249         if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
2250                 pr_err(MPT3SAS_FMT "%s: no reply message\n",
2251                     ioc->name, __func__);
2252                 rc = -EFAULT;
2253                 goto out;
2254         }
2255
2256         mpi_reply = ioc->ctl_cmds.reply;
2257         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
2258
2259         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
2260                 ioc->diag_buffer_status[buffer_type] |=
2261                     MPT3_DIAG_BUFFER_IS_REGISTERED;
2262                 dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: success\n",
2263                     ioc->name, __func__));
2264         } else {
2265                 pr_info(MPT3SAS_FMT
2266                         "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
2267                         ioc->name, __func__,
2268                     ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
2269                 rc = -EFAULT;
2270         }
2271
2272  issue_host_reset:
2273         if (issue_reset)
2274                 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2275
2276  out:
2277
2278         ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
2279         return rc;
2280 }
2281
2282
2283
2284 #ifdef CONFIG_COMPAT
2285 /**
2286  * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2287  * @ioc: per adapter object
2288  * @cmd: ioctl opcode
2289  * @arg: (struct mpt3_ioctl_command32)
2290  *
2291  * MPT3COMMAND32 - Handle 32bit applications running on 64bit os.
2292  */
2293 static long
2294 _ctl_compat_mpt_command(struct MPT3SAS_ADAPTER *ioc, unsigned cmd,
2295         void __user *arg)
2296 {
2297         struct mpt3_ioctl_command32 karg32;
2298         struct mpt3_ioctl_command32 __user *uarg;
2299         struct mpt3_ioctl_command karg;
2300
2301         if (_IOC_SIZE(cmd) != sizeof(struct mpt3_ioctl_command32))
2302                 return -EINVAL;
2303
2304         uarg = (struct mpt3_ioctl_command32 __user *) arg;
2305
2306         if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2307                 pr_err("failure at %s:%d/%s()!\n",
2308                     __FILE__, __LINE__, __func__);
2309                 return -EFAULT;
2310         }
2311
2312         memset(&karg, 0, sizeof(struct mpt3_ioctl_command));
2313         karg.hdr.ioc_number = karg32.hdr.ioc_number;
2314         karg.hdr.port_number = karg32.hdr.port_number;
2315         karg.hdr.max_data_size = karg32.hdr.max_data_size;
2316         karg.timeout = karg32.timeout;
2317         karg.max_reply_bytes = karg32.max_reply_bytes;
2318         karg.data_in_size = karg32.data_in_size;
2319         karg.data_out_size = karg32.data_out_size;
2320         karg.max_sense_bytes = karg32.max_sense_bytes;
2321         karg.data_sge_offset = karg32.data_sge_offset;
2322         karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
2323         karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
2324         karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
2325         karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
2326         return _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2327 }
2328 #endif
2329
2330 /**
2331  * _ctl_ioctl_main - main ioctl entry point
2332  * @file:  (struct file)
2333  * @cmd:  ioctl opcode
2334  * @arg:  user space data buffer
2335  * @compat:  handles 32 bit applications in 64bit os
2336  * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
2337  * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
2338  */
2339 static long
2340 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg,
2341         u8 compat, u16 mpi_version)
2342 {
2343         struct MPT3SAS_ADAPTER *ioc;
2344         struct mpt3_ioctl_header ioctl_header;
2345         enum block_state state;
2346         long ret = -EINVAL;
2347
2348         /* get IOCTL header */
2349         if (copy_from_user(&ioctl_header, (char __user *)arg,
2350             sizeof(struct mpt3_ioctl_header))) {
2351                 pr_err("failure at %s:%d/%s()!\n",
2352                     __FILE__, __LINE__, __func__);
2353                 return -EFAULT;
2354         }
2355
2356         if (_ctl_verify_adapter(ioctl_header.ioc_number,
2357                                 &ioc, mpi_version) == -1 || !ioc)
2358                 return -ENODEV;
2359
2360         /* pci_access_mutex lock acquired by ioctl path */
2361         mutex_lock(&ioc->pci_access_mutex);
2362
2363         if (ioc->shost_recovery || ioc->pci_error_recovery ||
2364             ioc->is_driver_loading || ioc->remove_host) {
2365                 ret = -EAGAIN;
2366                 goto out_unlock_pciaccess;
2367         }
2368
2369         state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2370         if (state == NON_BLOCKING) {
2371                 if (!mutex_trylock(&ioc->ctl_cmds.mutex)) {
2372                         ret = -EAGAIN;
2373                         goto out_unlock_pciaccess;
2374                 }
2375         } else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) {
2376                 ret = -ERESTARTSYS;
2377                 goto out_unlock_pciaccess;
2378         }
2379
2380
2381         switch (cmd) {
2382         case MPT3IOCINFO:
2383                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_iocinfo))
2384                         ret = _ctl_getiocinfo(ioc, arg);
2385                 break;
2386 #ifdef CONFIG_COMPAT
2387         case MPT3COMMAND32:
2388 #endif
2389         case MPT3COMMAND:
2390         {
2391                 struct mpt3_ioctl_command __user *uarg;
2392                 struct mpt3_ioctl_command karg;
2393
2394 #ifdef CONFIG_COMPAT
2395                 if (compat) {
2396                         ret = _ctl_compat_mpt_command(ioc, cmd, arg);
2397                         break;
2398                 }
2399 #endif
2400                 if (copy_from_user(&karg, arg, sizeof(karg))) {
2401                         pr_err("failure at %s:%d/%s()!\n",
2402                             __FILE__, __LINE__, __func__);
2403                         ret = -EFAULT;
2404                         break;
2405                 }
2406
2407                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_command)) {
2408                         uarg = arg;
2409                         ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2410                 }
2411                 break;
2412         }
2413         case MPT3EVENTQUERY:
2414                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventquery))
2415                         ret = _ctl_eventquery(ioc, arg);
2416                 break;
2417         case MPT3EVENTENABLE:
2418                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventenable))
2419                         ret = _ctl_eventenable(ioc, arg);
2420                 break;
2421         case MPT3EVENTREPORT:
2422                 ret = _ctl_eventreport(ioc, arg);
2423                 break;
2424         case MPT3HARDRESET:
2425                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_diag_reset))
2426                         ret = _ctl_do_reset(ioc, arg);
2427                 break;
2428         case MPT3BTDHMAPPING:
2429                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_btdh_mapping))
2430                         ret = _ctl_btdh_mapping(ioc, arg);
2431                 break;
2432         case MPT3DIAGREGISTER:
2433                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_register))
2434                         ret = _ctl_diag_register(ioc, arg);
2435                 break;
2436         case MPT3DIAGUNREGISTER:
2437                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_unregister))
2438                         ret = _ctl_diag_unregister(ioc, arg);
2439                 break;
2440         case MPT3DIAGQUERY:
2441                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_query))
2442                         ret = _ctl_diag_query(ioc, arg);
2443                 break;
2444         case MPT3DIAGRELEASE:
2445                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_release))
2446                         ret = _ctl_diag_release(ioc, arg);
2447                 break;
2448         case MPT3DIAGREADBUFFER:
2449                 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_read_buffer))
2450                         ret = _ctl_diag_read_buffer(ioc, arg);
2451                 break;
2452         default:
2453                 dctlprintk(ioc, pr_info(MPT3SAS_FMT
2454                     "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
2455                 break;
2456         }
2457
2458         mutex_unlock(&ioc->ctl_cmds.mutex);
2459 out_unlock_pciaccess:
2460         mutex_unlock(&ioc->pci_access_mutex);
2461         return ret;
2462 }
2463
2464 /**
2465  * _ctl_ioctl - mpt3ctl main ioctl entry point (unlocked)
2466  * @file: (struct file)
2467  * @cmd: ioctl opcode
2468  * @arg: ?
2469  */
2470 static long
2471 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2472 {
2473         long ret;
2474
2475         /* pass MPI25_VERSION | MPI26_VERSION value,
2476          * to indicate that this ioctl cmd
2477          * came from mpt3ctl ioctl device.
2478          */
2479         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0,
2480                 MPI25_VERSION | MPI26_VERSION);
2481         return ret;
2482 }
2483
2484 /**
2485  * _ctl_mpt2_ioctl - mpt2ctl main ioctl entry point (unlocked)
2486  * @file: (struct file)
2487  * @cmd: ioctl opcode
2488  * @arg: ?
2489  */
2490 static long
2491 _ctl_mpt2_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2492 {
2493         long ret;
2494
2495         /* pass MPI2_VERSION value, to indicate that this ioctl cmd
2496          * came from mpt2ctl ioctl device.
2497          */
2498         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0, MPI2_VERSION);
2499         return ret;
2500 }
2501 #ifdef CONFIG_COMPAT
2502 /**
2503  *_ ctl_ioctl_compat - main ioctl entry point (compat)
2504  * @file: ?
2505  * @cmd: ?
2506  * @arg: ?
2507  *
2508  * This routine handles 32 bit applications in 64bit os.
2509  */
2510 static long
2511 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2512 {
2513         long ret;
2514
2515         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1,
2516                 MPI25_VERSION | MPI26_VERSION);
2517         return ret;
2518 }
2519
2520 /**
2521  *_ ctl_mpt2_ioctl_compat - main ioctl entry point (compat)
2522  * @file: ?
2523  * @cmd: ?
2524  * @arg: ?
2525  *
2526  * This routine handles 32 bit applications in 64bit os.
2527  */
2528 static long
2529 _ctl_mpt2_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2530 {
2531         long ret;
2532
2533         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1, MPI2_VERSION);
2534         return ret;
2535 }
2536 #endif
2537
2538 /* scsi host attributes */
2539 /**
2540  * _ctl_version_fw_show - firmware version
2541  * @cdev: pointer to embedded class device
2542  * @attr: ?
2543  * @buf: the buffer returned
2544  *
2545  * A sysfs 'read-only' shost attribute.
2546  */
2547 static ssize_t
2548 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2549         char *buf)
2550 {
2551         struct Scsi_Host *shost = class_to_shost(cdev);
2552         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2553
2554         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2555             (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2556             (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2557             (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2558             ioc->facts.FWVersion.Word & 0x000000FF);
2559 }
2560 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2561
2562 /**
2563  * _ctl_version_bios_show - bios version
2564  * @cdev: pointer to embedded class device
2565  * @attr: ?
2566  * @buf: the buffer returned
2567  *
2568  * A sysfs 'read-only' shost attribute.
2569  */
2570 static ssize_t
2571 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2572         char *buf)
2573 {
2574         struct Scsi_Host *shost = class_to_shost(cdev);
2575         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2576
2577         u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2578
2579         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2580             (version & 0xFF000000) >> 24,
2581             (version & 0x00FF0000) >> 16,
2582             (version & 0x0000FF00) >> 8,
2583             version & 0x000000FF);
2584 }
2585 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2586
2587 /**
2588  * _ctl_version_mpi_show - MPI (message passing interface) version
2589  * @cdev: pointer to embedded class device
2590  * @attr: ?
2591  * @buf: the buffer returned
2592  *
2593  * A sysfs 'read-only' shost attribute.
2594  */
2595 static ssize_t
2596 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2597         char *buf)
2598 {
2599         struct Scsi_Host *shost = class_to_shost(cdev);
2600         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2601
2602         return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2603             ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2604 }
2605 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2606
2607 /**
2608  * _ctl_version_product_show - product name
2609  * @cdev: pointer to embedded class device
2610  * @attr: ?
2611  * @buf: the buffer returned
2612  *
2613  * A sysfs 'read-only' shost attribute.
2614  */
2615 static ssize_t
2616 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2617         char *buf)
2618 {
2619         struct Scsi_Host *shost = class_to_shost(cdev);
2620         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2621
2622         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2623 }
2624 static DEVICE_ATTR(version_product, S_IRUGO, _ctl_version_product_show, NULL);
2625
2626 /**
2627  * _ctl_version_nvdata_persistent_show - ndvata persistent version
2628  * @cdev: pointer to embedded class device
2629  * @attr: ?
2630  * @buf: the buffer returned
2631  *
2632  * A sysfs 'read-only' shost attribute.
2633  */
2634 static ssize_t
2635 _ctl_version_nvdata_persistent_show(struct device *cdev,
2636         struct device_attribute *attr, char *buf)
2637 {
2638         struct Scsi_Host *shost = class_to_shost(cdev);
2639         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2640
2641         return snprintf(buf, PAGE_SIZE, "%08xh\n",
2642             le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2643 }
2644 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2645         _ctl_version_nvdata_persistent_show, NULL);
2646
2647 /**
2648  * _ctl_version_nvdata_default_show - nvdata default version
2649  * @cdev: pointer to embedded class device
2650  * @attr: ?
2651  * @buf: the buffer returned
2652  *
2653  * A sysfs 'read-only' shost attribute.
2654  */
2655 static ssize_t
2656 _ctl_version_nvdata_default_show(struct device *cdev, struct device_attribute
2657         *attr, char *buf)
2658 {
2659         struct Scsi_Host *shost = class_to_shost(cdev);
2660         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2661
2662         return snprintf(buf, PAGE_SIZE, "%08xh\n",
2663             le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2664 }
2665 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2666         _ctl_version_nvdata_default_show, NULL);
2667
2668 /**
2669  * _ctl_board_name_show - board name
2670  * @cdev: pointer to embedded class device
2671  * @attr: ?
2672  * @buf: the buffer returned
2673  *
2674  * A sysfs 'read-only' shost attribute.
2675  */
2676 static ssize_t
2677 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2678         char *buf)
2679 {
2680         struct Scsi_Host *shost = class_to_shost(cdev);
2681         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2682
2683         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2684 }
2685 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2686
2687 /**
2688  * _ctl_board_assembly_show - board assembly name
2689  * @cdev: pointer to embedded class device
2690  * @attr: ?
2691  * @buf: the buffer returned
2692  *
2693  * A sysfs 'read-only' shost attribute.
2694  */
2695 static ssize_t
2696 _ctl_board_assembly_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, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2703 }
2704 static DEVICE_ATTR(board_assembly, S_IRUGO, _ctl_board_assembly_show, NULL);
2705
2706 /**
2707  * _ctl_board_tracer_show - board tracer number
2708  * @cdev: pointer to embedded class device
2709  * @attr: ?
2710  * @buf: the buffer returned
2711  *
2712  * A sysfs 'read-only' shost attribute.
2713  */
2714 static ssize_t
2715 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2716         char *buf)
2717 {
2718         struct Scsi_Host *shost = class_to_shost(cdev);
2719         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2720
2721         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2722 }
2723 static DEVICE_ATTR(board_tracer, S_IRUGO, _ctl_board_tracer_show, NULL);
2724
2725 /**
2726  * _ctl_io_delay_show - io missing delay
2727  * @cdev: pointer to embedded class device
2728  * @attr: ?
2729  * @buf: the buffer returned
2730  *
2731  * This is for firmware implemention for deboucing device
2732  * removal events.
2733  *
2734  * A sysfs 'read-only' shost attribute.
2735  */
2736 static ssize_t
2737 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2738         char *buf)
2739 {
2740         struct Scsi_Host *shost = class_to_shost(cdev);
2741         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2742
2743         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2744 }
2745 static DEVICE_ATTR(io_delay, S_IRUGO, _ctl_io_delay_show, NULL);
2746
2747 /**
2748  * _ctl_device_delay_show - device missing delay
2749  * @cdev: pointer to embedded class device
2750  * @attr: ?
2751  * @buf: the buffer returned
2752  *
2753  * This is for firmware implemention for deboucing device
2754  * removal events.
2755  *
2756  * A sysfs 'read-only' shost attribute.
2757  */
2758 static ssize_t
2759 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2760         char *buf)
2761 {
2762         struct Scsi_Host *shost = class_to_shost(cdev);
2763         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2764
2765         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2766 }
2767 static DEVICE_ATTR(device_delay, S_IRUGO, _ctl_device_delay_show, NULL);
2768
2769 /**
2770  * _ctl_fw_queue_depth_show - global credits
2771  * @cdev: pointer to embedded class device
2772  * @attr: ?
2773  * @buf: the buffer returned
2774  *
2775  * This is firmware queue depth limit
2776  *
2777  * A sysfs 'read-only' shost attribute.
2778  */
2779 static ssize_t
2780 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2781         char *buf)
2782 {
2783         struct Scsi_Host *shost = class_to_shost(cdev);
2784         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2785
2786         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2787 }
2788 static DEVICE_ATTR(fw_queue_depth, S_IRUGO, _ctl_fw_queue_depth_show, NULL);
2789
2790 /**
2791  * _ctl_sas_address_show - sas address
2792  * @cdev: pointer to embedded class device
2793  * @attr: ?
2794  * @buf: the buffer returned
2795  *
2796  * This is the controller sas address
2797  *
2798  * A sysfs 'read-only' shost attribute.
2799  */
2800 static ssize_t
2801 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2802         char *buf)
2803
2804 {
2805         struct Scsi_Host *shost = class_to_shost(cdev);
2806         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2807
2808         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2809             (unsigned long long)ioc->sas_hba.sas_address);
2810 }
2811 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2812         _ctl_host_sas_address_show, NULL);
2813
2814 /**
2815  * _ctl_logging_level_show - logging level
2816  * @cdev: pointer to embedded class device
2817  * @attr: ?
2818  * @buf: the buffer returned
2819  *
2820  * A sysfs 'read/write' shost attribute.
2821  */
2822 static ssize_t
2823 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2824         char *buf)
2825 {
2826         struct Scsi_Host *shost = class_to_shost(cdev);
2827         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2828
2829         return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2830 }
2831 static ssize_t
2832 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2833         const char *buf, size_t count)
2834 {
2835         struct Scsi_Host *shost = class_to_shost(cdev);
2836         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2837         int val = 0;
2838
2839         if (sscanf(buf, "%x", &val) != 1)
2840                 return -EINVAL;
2841
2842         ioc->logging_level = val;
2843         pr_info(MPT3SAS_FMT "logging_level=%08xh\n", ioc->name,
2844             ioc->logging_level);
2845         return strlen(buf);
2846 }
2847 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR, _ctl_logging_level_show,
2848         _ctl_logging_level_store);
2849
2850 /**
2851  * _ctl_fwfault_debug_show - show/store fwfault_debug
2852  * @cdev: pointer to embedded class device
2853  * @attr: ?
2854  * @buf: the buffer returned
2855  *
2856  * mpt3sas_fwfault_debug is command line option
2857  * A sysfs 'read/write' shost attribute.
2858  */
2859 static ssize_t
2860 _ctl_fwfault_debug_show(struct device *cdev, struct device_attribute *attr,
2861         char *buf)
2862 {
2863         struct Scsi_Host *shost = class_to_shost(cdev);
2864         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2865
2866         return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
2867 }
2868 static ssize_t
2869 _ctl_fwfault_debug_store(struct device *cdev, struct device_attribute *attr,
2870         const char *buf, size_t count)
2871 {
2872         struct Scsi_Host *shost = class_to_shost(cdev);
2873         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2874         int val = 0;
2875
2876         if (sscanf(buf, "%d", &val) != 1)
2877                 return -EINVAL;
2878
2879         ioc->fwfault_debug = val;
2880         pr_info(MPT3SAS_FMT "fwfault_debug=%d\n", ioc->name,
2881             ioc->fwfault_debug);
2882         return strlen(buf);
2883 }
2884 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,
2885         _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);
2886
2887 /**
2888  * _ctl_ioc_reset_count_show - ioc reset count
2889  * @cdev: pointer to embedded class device
2890  * @attr: ?
2891  * @buf: the buffer returned
2892  *
2893  * This is firmware queue depth limit
2894  *
2895  * A sysfs 'read-only' shost attribute.
2896  */
2897 static ssize_t
2898 _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,
2899         char *buf)
2900 {
2901         struct Scsi_Host *shost = class_to_shost(cdev);
2902         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2903
2904         return snprintf(buf, PAGE_SIZE, "%d\n", ioc->ioc_reset_count);
2905 }
2906 static DEVICE_ATTR(ioc_reset_count, S_IRUGO, _ctl_ioc_reset_count_show, NULL);
2907
2908 /**
2909  * _ctl_ioc_reply_queue_count_show - number of reply queues
2910  * @cdev: pointer to embedded class device
2911  * @attr: ?
2912  * @buf: the buffer returned
2913  *
2914  * This is number of reply queues
2915  *
2916  * A sysfs 'read-only' shost attribute.
2917  */
2918 static ssize_t
2919 _ctl_ioc_reply_queue_count_show(struct device *cdev,
2920         struct device_attribute *attr, char *buf)
2921 {
2922         u8 reply_queue_count;
2923         struct Scsi_Host *shost = class_to_shost(cdev);
2924         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2925
2926         if ((ioc->facts.IOCCapabilities &
2927             MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable)
2928                 reply_queue_count = ioc->reply_queue_count;
2929         else
2930                 reply_queue_count = 1;
2931
2932         return snprintf(buf, PAGE_SIZE, "%d\n", reply_queue_count);
2933 }
2934 static DEVICE_ATTR(reply_queue_count, S_IRUGO, _ctl_ioc_reply_queue_count_show,
2935         NULL);
2936
2937 /**
2938  * _ctl_BRM_status_show - Backup Rail Monitor Status
2939  * @cdev: pointer to embedded class device
2940  * @attr: ?
2941  * @buf: the buffer returned
2942  *
2943  * This is number of reply queues
2944  *
2945  * A sysfs 'read-only' shost attribute.
2946  */
2947 static ssize_t
2948 _ctl_BRM_status_show(struct device *cdev, struct device_attribute *attr,
2949         char *buf)
2950 {
2951         struct Scsi_Host *shost = class_to_shost(cdev);
2952         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2953         Mpi2IOUnitPage3_t *io_unit_pg3 = NULL;
2954         Mpi2ConfigReply_t mpi_reply;
2955         u16 backup_rail_monitor_status = 0;
2956         u16 ioc_status;
2957         int sz;
2958         ssize_t rc = 0;
2959
2960         if (!ioc->is_warpdrive) {
2961                 pr_err(MPT3SAS_FMT "%s: BRM attribute is only for"
2962                     " warpdrive\n", ioc->name, __func__);
2963                 goto out;
2964         }
2965         /* pci_access_mutex lock acquired by sysfs show path */
2966         mutex_lock(&ioc->pci_access_mutex);
2967         if (ioc->pci_error_recovery || ioc->remove_host) {
2968                 mutex_unlock(&ioc->pci_access_mutex);
2969                 return 0;
2970         }
2971
2972         /* allocate upto GPIOVal 36 entries */
2973         sz = offsetof(Mpi2IOUnitPage3_t, GPIOVal) + (sizeof(u16) * 36);
2974         io_unit_pg3 = kzalloc(sz, GFP_KERNEL);
2975         if (!io_unit_pg3) {
2976                 pr_err(MPT3SAS_FMT "%s: failed allocating memory "
2977                     "for iounit_pg3: (%d) bytes\n", ioc->name, __func__, sz);
2978                 goto out;
2979         }
2980
2981         if (mpt3sas_config_get_iounit_pg3(ioc, &mpi_reply, io_unit_pg3, sz) !=
2982             0) {
2983                 pr_err(MPT3SAS_FMT
2984                     "%s: failed reading iounit_pg3\n", ioc->name,
2985                     __func__);
2986                 goto out;
2987         }
2988
2989         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
2990         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2991                 pr_err(MPT3SAS_FMT "%s: iounit_pg3 failed with "
2992                     "ioc_status(0x%04x)\n", ioc->name, __func__, ioc_status);
2993                 goto out;
2994         }
2995
2996         if (io_unit_pg3->GPIOCount < 25) {
2997                 pr_err(MPT3SAS_FMT "%s: iounit_pg3->GPIOCount less than "
2998                      "25 entries, detected (%d) entries\n", ioc->name, __func__,
2999                     io_unit_pg3->GPIOCount);
3000                 goto out;
3001         }
3002
3003         /* BRM status is in bit zero of GPIOVal[24] */
3004         backup_rail_monitor_status = le16_to_cpu(io_unit_pg3->GPIOVal[24]);
3005         rc = snprintf(buf, PAGE_SIZE, "%d\n", (backup_rail_monitor_status & 1));
3006
3007  out:
3008         kfree(io_unit_pg3);
3009         mutex_unlock(&ioc->pci_access_mutex);
3010         return rc;
3011 }
3012 static DEVICE_ATTR(BRM_status, S_IRUGO, _ctl_BRM_status_show, NULL);
3013
3014 struct DIAG_BUFFER_START {
3015         __le32  Size;
3016         __le32  DiagVersion;
3017         u8      BufferType;
3018         u8      Reserved[3];
3019         __le32  Reserved1;
3020         __le32  Reserved2;
3021         __le32  Reserved3;
3022 };
3023
3024 /**
3025  * _ctl_host_trace_buffer_size_show - host buffer size (trace only)
3026  * @cdev: pointer to embedded class device
3027  * @attr: ?
3028  * @buf: the buffer returned
3029  *
3030  * A sysfs 'read-only' shost attribute.
3031  */
3032 static ssize_t
3033 _ctl_host_trace_buffer_size_show(struct device *cdev,
3034         struct device_attribute *attr, char *buf)
3035 {
3036         struct Scsi_Host *shost = class_to_shost(cdev);
3037         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3038         u32 size = 0;
3039         struct DIAG_BUFFER_START *request_data;
3040
3041         if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
3042                 pr_err(MPT3SAS_FMT
3043                         "%s: host_trace_buffer is not registered\n",
3044                         ioc->name, __func__);
3045                 return 0;
3046         }
3047
3048         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3049             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
3050                 pr_err(MPT3SAS_FMT
3051                         "%s: host_trace_buffer is not registered\n",
3052                         ioc->name, __func__);
3053                 return 0;
3054         }
3055
3056         request_data = (struct DIAG_BUFFER_START *)
3057             ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE];
3058         if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 ||
3059             le32_to_cpu(request_data->DiagVersion) == 0x01000000 ||
3060             le32_to_cpu(request_data->DiagVersion) == 0x01010000) &&
3061             le32_to_cpu(request_data->Reserved3) == 0x4742444c)
3062                 size = le32_to_cpu(request_data->Size);
3063
3064         ioc->ring_buffer_sz = size;
3065         return snprintf(buf, PAGE_SIZE, "%d\n", size);
3066 }
3067 static DEVICE_ATTR(host_trace_buffer_size, S_IRUGO,
3068         _ctl_host_trace_buffer_size_show, NULL);
3069
3070 /**
3071  * _ctl_host_trace_buffer_show - firmware ring buffer (trace only)
3072  * @cdev: pointer to embedded class device
3073  * @attr: ?
3074  * @buf: the buffer returned
3075  *
3076  * A sysfs 'read/write' shost attribute.
3077  *
3078  * You will only be able to read 4k bytes of ring buffer at a time.
3079  * In order to read beyond 4k bytes, you will have to write out the
3080  * offset to the same attribute, it will move the pointer.
3081  */
3082 static ssize_t
3083 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr,
3084         char *buf)
3085 {
3086         struct Scsi_Host *shost = class_to_shost(cdev);
3087         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3088         void *request_data;
3089         u32 size;
3090
3091         if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
3092                 pr_err(MPT3SAS_FMT
3093                         "%s: host_trace_buffer is not registered\n",
3094                         ioc->name, __func__);
3095                 return 0;
3096         }
3097
3098         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3099             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
3100                 pr_err(MPT3SAS_FMT
3101                         "%s: host_trace_buffer is not registered\n",
3102                         ioc->name, __func__);
3103                 return 0;
3104         }
3105
3106         if (ioc->ring_buffer_offset > ioc->ring_buffer_sz)
3107                 return 0;
3108
3109         size = ioc->ring_buffer_sz - ioc->ring_buffer_offset;
3110         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3111         request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset;
3112         memcpy(buf, request_data, size);
3113         return size;
3114 }
3115
3116 static ssize_t
3117 _ctl_host_trace_buffer_store(struct device *cdev, struct device_attribute *attr,
3118         const char *buf, size_t count)
3119 {
3120         struct Scsi_Host *shost = class_to_shost(cdev);
3121         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3122         int val = 0;
3123
3124         if (sscanf(buf, "%d", &val) != 1)
3125                 return -EINVAL;
3126
3127         ioc->ring_buffer_offset = val;
3128         return strlen(buf);
3129 }
3130 static DEVICE_ATTR(host_trace_buffer, S_IRUGO | S_IWUSR,
3131         _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store);
3132
3133
3134 /*****************************************/
3135
3136 /**
3137  * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only)
3138  * @cdev: pointer to embedded class device
3139  * @attr: ?
3140  * @buf: the buffer returned
3141  *
3142  * A sysfs 'read/write' shost attribute.
3143  *
3144  * This is a mechnism to post/release host_trace_buffers
3145  */
3146 static ssize_t
3147 _ctl_host_trace_buffer_enable_show(struct device *cdev,
3148         struct device_attribute *attr, char *buf)
3149 {
3150         struct Scsi_Host *shost = class_to_shost(cdev);
3151         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3152
3153         if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) ||
3154            ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3155             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0))
3156                 return snprintf(buf, PAGE_SIZE, "off\n");
3157         else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3158             MPT3_DIAG_BUFFER_IS_RELEASED))
3159                 return snprintf(buf, PAGE_SIZE, "release\n");
3160         else
3161                 return snprintf(buf, PAGE_SIZE, "post\n");
3162 }
3163
3164 static ssize_t
3165 _ctl_host_trace_buffer_enable_store(struct device *cdev,
3166         struct device_attribute *attr, const char *buf, size_t count)
3167 {
3168         struct Scsi_Host *shost = class_to_shost(cdev);
3169         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3170         char str[10] = "";
3171         struct mpt3_diag_register diag_register;
3172         u8 issue_reset = 0;
3173
3174         /* don't allow post/release occurr while recovery is active */
3175         if (ioc->shost_recovery || ioc->remove_host ||
3176             ioc->pci_error_recovery || ioc->is_driver_loading)
3177                 return -EBUSY;
3178
3179         if (sscanf(buf, "%9s", str) != 1)
3180                 return -EINVAL;
3181
3182         if (!strcmp(str, "post")) {
3183                 /* exit out if host buffers are already posted */
3184                 if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) &&
3185                     (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3186                     MPT3_DIAG_BUFFER_IS_REGISTERED) &&
3187                     ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3188                     MPT3_DIAG_BUFFER_IS_RELEASED) == 0))
3189                         goto out;
3190                 memset(&diag_register, 0, sizeof(struct mpt3_diag_register));
3191                 pr_info(MPT3SAS_FMT "posting host trace buffers\n",
3192                     ioc->name);
3193                 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
3194                 diag_register.requested_buffer_size = (1024 * 1024);
3195                 diag_register.unique_id = 0x7075900;
3196                 ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
3197                 _ctl_diag_register_2(ioc,  &diag_register);
3198         } else if (!strcmp(str, "release")) {
3199                 /* exit out if host buffers are already released */
3200                 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE])
3201                         goto out;
3202                 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3203                     MPT3_DIAG_BUFFER_IS_REGISTERED) == 0)
3204                         goto out;
3205                 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3206                     MPT3_DIAG_BUFFER_IS_RELEASED))
3207                         goto out;
3208                 pr_info(MPT3SAS_FMT "releasing host trace buffer\n",
3209                     ioc->name);
3210                 mpt3sas_send_diag_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE,
3211                     &issue_reset);
3212         }
3213
3214  out:
3215         return strlen(buf);
3216 }
3217 static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR,
3218         _ctl_host_trace_buffer_enable_show,
3219         _ctl_host_trace_buffer_enable_store);
3220
3221 /*********** diagnostic trigger suppport *********************************/
3222
3223 /**
3224  * _ctl_diag_trigger_master_show - show the diag_trigger_master attribute
3225  * @cdev: pointer to embedded class device
3226  * @attr: ?
3227  * @buf: the buffer returned
3228  *
3229  * A sysfs 'read/write' shost attribute.
3230  */
3231 static ssize_t
3232 _ctl_diag_trigger_master_show(struct device *cdev,
3233         struct device_attribute *attr, char *buf)
3234
3235 {
3236         struct Scsi_Host *shost = class_to_shost(cdev);
3237         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3238         unsigned long flags;
3239         ssize_t rc;
3240
3241         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3242         rc = sizeof(struct SL_WH_MASTER_TRIGGER_T);
3243         memcpy(buf, &ioc->diag_trigger_master, rc);
3244         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3245         return rc;
3246 }
3247
3248 /**
3249  * _ctl_diag_trigger_master_store - store the diag_trigger_master attribute
3250  * @cdev: pointer to embedded class device
3251  * @attr: ?
3252  * @buf: the buffer returned
3253  * @count: ?
3254  *
3255  * A sysfs 'read/write' shost attribute.
3256  */
3257 static ssize_t
3258 _ctl_diag_trigger_master_store(struct device *cdev,
3259         struct device_attribute *attr, const char *buf, size_t count)
3260
3261 {
3262         struct Scsi_Host *shost = class_to_shost(cdev);
3263         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3264         unsigned long flags;
3265         ssize_t rc;
3266
3267         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3268         rc = min(sizeof(struct SL_WH_MASTER_TRIGGER_T), count);
3269         memset(&ioc->diag_trigger_master, 0,
3270             sizeof(struct SL_WH_MASTER_TRIGGER_T));
3271         memcpy(&ioc->diag_trigger_master, buf, rc);
3272         ioc->diag_trigger_master.MasterData |=
3273             (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET);
3274         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3275         return rc;
3276 }
3277 static DEVICE_ATTR(diag_trigger_master, S_IRUGO | S_IWUSR,
3278         _ctl_diag_trigger_master_show, _ctl_diag_trigger_master_store);
3279
3280
3281 /**
3282  * _ctl_diag_trigger_event_show - show the diag_trigger_event attribute
3283  * @cdev: pointer to embedded class device
3284  * @attr: ?
3285  * @buf: the buffer returned
3286  *
3287  * A sysfs 'read/write' shost attribute.
3288  */
3289 static ssize_t
3290 _ctl_diag_trigger_event_show(struct device *cdev,
3291         struct device_attribute *attr, char *buf)
3292 {
3293         struct Scsi_Host *shost = class_to_shost(cdev);
3294         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3295         unsigned long flags;
3296         ssize_t rc;
3297
3298         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3299         rc = sizeof(struct SL_WH_EVENT_TRIGGERS_T);
3300         memcpy(buf, &ioc->diag_trigger_event, rc);
3301         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3302         return rc;
3303 }
3304
3305 /**
3306  * _ctl_diag_trigger_event_store - store the diag_trigger_event attribute
3307  * @cdev: pointer to embedded class device
3308  * @attr: ?
3309  * @buf: the buffer returned
3310  * @count: ?
3311  *
3312  * A sysfs 'read/write' shost attribute.
3313  */
3314 static ssize_t
3315 _ctl_diag_trigger_event_store(struct device *cdev,
3316         struct device_attribute *attr, const char *buf, size_t count)
3317
3318 {
3319         struct Scsi_Host *shost = class_to_shost(cdev);
3320         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3321         unsigned long flags;
3322         ssize_t sz;
3323
3324         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3325         sz = min(sizeof(struct SL_WH_EVENT_TRIGGERS_T), count);
3326         memset(&ioc->diag_trigger_event, 0,
3327             sizeof(struct SL_WH_EVENT_TRIGGERS_T));
3328         memcpy(&ioc->diag_trigger_event, buf, sz);
3329         if (ioc->diag_trigger_event.ValidEntries > NUM_VALID_ENTRIES)
3330                 ioc->diag_trigger_event.ValidEntries = NUM_VALID_ENTRIES;
3331         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3332         return sz;
3333 }
3334 static DEVICE_ATTR(diag_trigger_event, S_IRUGO | S_IWUSR,
3335         _ctl_diag_trigger_event_show, _ctl_diag_trigger_event_store);
3336
3337
3338 /**
3339  * _ctl_diag_trigger_scsi_show - show the diag_trigger_scsi attribute
3340  * @cdev: pointer to embedded class device
3341  * @attr: ?
3342  * @buf: the buffer returned
3343  *
3344  * A sysfs 'read/write' shost attribute.
3345  */
3346 static ssize_t
3347 _ctl_diag_trigger_scsi_show(struct device *cdev,
3348         struct device_attribute *attr, char *buf)
3349 {
3350         struct Scsi_Host *shost = class_to_shost(cdev);
3351         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3352         unsigned long flags;
3353         ssize_t rc;
3354
3355         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3356         rc = sizeof(struct SL_WH_SCSI_TRIGGERS_T);
3357         memcpy(buf, &ioc->diag_trigger_scsi, rc);
3358         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3359         return rc;
3360 }
3361
3362 /**
3363  * _ctl_diag_trigger_scsi_store - store the diag_trigger_scsi attribute
3364  * @cdev: pointer to embedded class device
3365  * @attr: ?
3366  * @buf: the buffer returned
3367  * @count: ?
3368  *
3369  * A sysfs 'read/write' shost attribute.
3370  */
3371 static ssize_t
3372 _ctl_diag_trigger_scsi_store(struct device *cdev,
3373         struct device_attribute *attr, const char *buf, size_t count)
3374 {
3375         struct Scsi_Host *shost = class_to_shost(cdev);
3376         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3377         unsigned long flags;
3378         ssize_t sz;
3379
3380         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3381         sz = min(sizeof(struct SL_WH_SCSI_TRIGGERS_T), count);
3382         memset(&ioc->diag_trigger_scsi, 0,
3383             sizeof(struct SL_WH_EVENT_TRIGGERS_T));
3384         memcpy(&ioc->diag_trigger_scsi, buf, sz);
3385         if (ioc->diag_trigger_scsi.ValidEntries > NUM_VALID_ENTRIES)
3386                 ioc->diag_trigger_scsi.ValidEntries = NUM_VALID_ENTRIES;
3387         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3388         return sz;
3389 }
3390 static DEVICE_ATTR(diag_trigger_scsi, S_IRUGO | S_IWUSR,
3391         _ctl_diag_trigger_scsi_show, _ctl_diag_trigger_scsi_store);
3392
3393
3394 /**
3395  * _ctl_diag_trigger_scsi_show - show the diag_trigger_mpi attribute
3396  * @cdev: pointer to embedded class device
3397  * @attr: ?
3398  * @buf: the buffer returned
3399  *
3400  * A sysfs 'read/write' shost attribute.
3401  */
3402 static ssize_t
3403 _ctl_diag_trigger_mpi_show(struct device *cdev,
3404         struct device_attribute *attr, char *buf)
3405 {
3406         struct Scsi_Host *shost = class_to_shost(cdev);
3407         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3408         unsigned long flags;
3409         ssize_t rc;
3410
3411         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3412         rc = sizeof(struct SL_WH_MPI_TRIGGERS_T);
3413         memcpy(buf, &ioc->diag_trigger_mpi, rc);
3414         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3415         return rc;
3416 }
3417
3418 /**
3419  * _ctl_diag_trigger_mpi_store - store the diag_trigger_mpi attribute
3420  * @cdev: pointer to embedded class device
3421  * @attr: ?
3422  * @buf: the buffer returned
3423  * @count: ?
3424  *
3425  * A sysfs 'read/write' shost attribute.
3426  */
3427 static ssize_t
3428 _ctl_diag_trigger_mpi_store(struct device *cdev,
3429         struct device_attribute *attr, const char *buf, size_t count)
3430 {
3431         struct Scsi_Host *shost = class_to_shost(cdev);
3432         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3433         unsigned long flags;
3434         ssize_t sz;
3435
3436         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3437         sz = min(sizeof(struct SL_WH_MPI_TRIGGERS_T), count);
3438         memset(&ioc->diag_trigger_mpi, 0,
3439             sizeof(ioc->diag_trigger_mpi));
3440         memcpy(&ioc->diag_trigger_mpi, buf, sz);
3441         if (ioc->diag_trigger_mpi.ValidEntries > NUM_VALID_ENTRIES)
3442                 ioc->diag_trigger_mpi.ValidEntries = NUM_VALID_ENTRIES;
3443         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3444         return sz;
3445 }
3446
3447 static DEVICE_ATTR(diag_trigger_mpi, S_IRUGO | S_IWUSR,
3448         _ctl_diag_trigger_mpi_show, _ctl_diag_trigger_mpi_store);
3449
3450 /*********** diagnostic trigger suppport *** END ****************************/
3451
3452 /*****************************************/
3453
3454 struct device_attribute *mpt3sas_host_attrs[] = {
3455         &dev_attr_version_fw,
3456         &dev_attr_version_bios,
3457         &dev_attr_version_mpi,
3458         &dev_attr_version_product,
3459         &dev_attr_version_nvdata_persistent,
3460         &dev_attr_version_nvdata_default,
3461         &dev_attr_board_name,
3462         &dev_attr_board_assembly,
3463         &dev_attr_board_tracer,
3464         &dev_attr_io_delay,
3465         &dev_attr_device_delay,
3466         &dev_attr_logging_level,
3467         &dev_attr_fwfault_debug,
3468         &dev_attr_fw_queue_depth,
3469         &dev_attr_host_sas_address,
3470         &dev_attr_ioc_reset_count,
3471         &dev_attr_host_trace_buffer_size,
3472         &dev_attr_host_trace_buffer,
3473         &dev_attr_host_trace_buffer_enable,
3474         &dev_attr_reply_queue_count,
3475         &dev_attr_diag_trigger_master,
3476         &dev_attr_diag_trigger_event,
3477         &dev_attr_diag_trigger_scsi,
3478         &dev_attr_diag_trigger_mpi,
3479         &dev_attr_BRM_status,
3480         NULL,
3481 };
3482
3483 /* device attributes */
3484
3485 /**
3486  * _ctl_device_sas_address_show - sas address
3487  * @dev: pointer to embedded class device
3488  * @attr: ?
3489  * @buf: the buffer returned
3490  *
3491  * This is the sas address for the target
3492  *
3493  * A sysfs 'read-only' shost attribute.
3494  */
3495 static ssize_t
3496 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
3497         char *buf)
3498 {
3499         struct scsi_device *sdev = to_scsi_device(dev);
3500         struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3501
3502         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
3503             (unsigned long long)sas_device_priv_data->sas_target->sas_address);
3504 }
3505 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
3506
3507 /**
3508  * _ctl_device_handle_show - device handle
3509  * @dev: pointer to embedded class device
3510  * @attr: ?
3511  * @buf: the buffer returned
3512  *
3513  * This is the firmware assigned device handle
3514  *
3515  * A sysfs 'read-only' shost attribute.
3516  */
3517 static ssize_t
3518 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
3519         char *buf)
3520 {
3521         struct scsi_device *sdev = to_scsi_device(dev);
3522         struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3523
3524         return snprintf(buf, PAGE_SIZE, "0x%04x\n",
3525             sas_device_priv_data->sas_target->handle);
3526 }
3527 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
3528
3529 /**
3530  * _ctl_device_ncq_io_prio_show - send prioritized io commands to device
3531  * @dev: pointer to embedded device
3532  * @attr: ?
3533  * @buf: the buffer returned
3534  *
3535  * A sysfs 'read/write' sdev attribute, only works with SATA
3536  */
3537 static ssize_t
3538 _ctl_device_ncq_prio_enable_show(struct device *dev,
3539                                  struct device_attribute *attr, char *buf)
3540 {
3541         struct scsi_device *sdev = to_scsi_device(dev);
3542         struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3543
3544         return snprintf(buf, PAGE_SIZE, "%d\n",
3545                         sas_device_priv_data->ncq_prio_enable);
3546 }
3547
3548 static ssize_t
3549 _ctl_device_ncq_prio_enable_store(struct device *dev,
3550                                   struct device_attribute *attr,
3551                                   const char *buf, size_t count)
3552 {
3553         struct scsi_device *sdev = to_scsi_device(dev);
3554         struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3555         bool ncq_prio_enable = 0;
3556
3557         if (kstrtobool(buf, &ncq_prio_enable))
3558                 return -EINVAL;
3559
3560         if (!scsih_ncq_prio_supp(sdev))
3561                 return -EINVAL;
3562
3563         sas_device_priv_data->ncq_prio_enable = ncq_prio_enable;
3564         return strlen(buf);
3565 }
3566 static DEVICE_ATTR(sas_ncq_prio_enable, S_IRUGO | S_IWUSR,
3567                    _ctl_device_ncq_prio_enable_show,
3568                    _ctl_device_ncq_prio_enable_store);
3569
3570 struct device_attribute *mpt3sas_dev_attrs[] = {
3571         &dev_attr_sas_address,
3572         &dev_attr_sas_device_handle,
3573         &dev_attr_sas_ncq_prio_enable,
3574         NULL,
3575 };
3576
3577 /* file operations table for mpt3ctl device */
3578 static const struct file_operations ctl_fops = {
3579         .owner = THIS_MODULE,
3580         .unlocked_ioctl = _ctl_ioctl,
3581         .poll = _ctl_poll,
3582         .fasync = _ctl_fasync,
3583 #ifdef CONFIG_COMPAT
3584         .compat_ioctl = _ctl_ioctl_compat,
3585 #endif
3586 };
3587
3588 /* file operations table for mpt2ctl device */
3589 static const struct file_operations ctl_gen2_fops = {
3590         .owner = THIS_MODULE,
3591         .unlocked_ioctl = _ctl_mpt2_ioctl,
3592         .poll = _ctl_poll,
3593         .fasync = _ctl_fasync,
3594 #ifdef CONFIG_COMPAT
3595         .compat_ioctl = _ctl_mpt2_ioctl_compat,
3596 #endif
3597 };
3598
3599 static struct miscdevice ctl_dev = {
3600         .minor  = MPT3SAS_MINOR,
3601         .name   = MPT3SAS_DEV_NAME,
3602         .fops   = &ctl_fops,
3603 };
3604
3605 static struct miscdevice gen2_ctl_dev = {
3606         .minor  = MPT2SAS_MINOR,
3607         .name   = MPT2SAS_DEV_NAME,
3608         .fops   = &ctl_gen2_fops,
3609 };
3610
3611 /**
3612  * mpt3sas_ctl_init - main entry point for ctl.
3613  * @hbas_to_enumerate: ?
3614  */
3615 void
3616 mpt3sas_ctl_init(ushort hbas_to_enumerate)
3617 {
3618         async_queue = NULL;
3619
3620         /* Don't register mpt3ctl ioctl device if
3621          * hbas_to_enumarate is one.
3622          */
3623         if (hbas_to_enumerate != 1)
3624                 if (misc_register(&ctl_dev) < 0)
3625                         pr_err("%s can't register misc device [minor=%d]\n",
3626                             MPT3SAS_DRIVER_NAME, MPT3SAS_MINOR);
3627
3628         /* Don't register mpt3ctl ioctl device if
3629          * hbas_to_enumarate is two.
3630          */
3631         if (hbas_to_enumerate != 2)
3632                 if (misc_register(&gen2_ctl_dev) < 0)
3633                         pr_err("%s can't register misc device [minor=%d]\n",
3634                             MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
3635
3636         init_waitqueue_head(&ctl_poll_wait);
3637 }
3638
3639 /**
3640  * mpt3sas_ctl_exit - exit point for ctl
3641  * @hbas_to_enumerate: ?
3642  */
3643 void
3644 mpt3sas_ctl_exit(ushort hbas_to_enumerate)
3645 {
3646         struct MPT3SAS_ADAPTER *ioc;
3647         int i;
3648
3649         list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
3650
3651                 /* free memory associated to diag buffers */
3652                 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
3653                         if (!ioc->diag_buffer[i])
3654                                 continue;
3655                         if (!(ioc->diag_buffer_status[i] &
3656                             MPT3_DIAG_BUFFER_IS_REGISTERED))
3657                                 continue;
3658                         if ((ioc->diag_buffer_status[i] &
3659                             MPT3_DIAG_BUFFER_IS_RELEASED))
3660                                 continue;
3661                         pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
3662                         ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
3663                         ioc->diag_buffer[i] = NULL;
3664                         ioc->diag_buffer_status[i] = 0;
3665                 }
3666
3667                 kfree(ioc->event_log);
3668         }
3669         if (hbas_to_enumerate != 1)
3670                 misc_deregister(&ctl_dev);
3671         if (hbas_to_enumerate != 2)
3672                 misc_deregister(&gen2_ctl_dev);
3673 }