git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/mpt2sas/mpt2sas_ctl.c

   1 /*
   2  * Management Module Support for MPT (Message Passing Technology) based
   3  * controllers
   4  *
   5  * This code is based on drivers/scsi/mpt2sas/mpt2_ctl.c
   6  * Copyright (C) 2007-2008  LSI Corporation
   7  *  (mailto:DL-MPTFusionLinux@lsi.com)
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * NO WARRANTY
  20  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  21  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  22  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  23  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  24  * solely responsible for determining the appropriateness of using and
  25  * distributing the Program and assumes all risks associated with its
  26  * exercise of rights under this Agreement, including but not limited to
  27  * the risks and costs of program errors, damage to or loss of data,
  28  * programs or equipment, and unavailability or interruption of operations.
  29
  30  * DISCLAIMER OF LIABILITY
  31  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  32  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  34  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  35  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  36  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  37  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  38
  39  * You should have received a copy of the GNU General Public License
  40  * along with this program; if not, write to the Free Software
  41  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  42  * USA.
  43  */
  44
  45 #include <linux/version.h>
  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/smp_lock.h>
  55 #include <linux/compat.h>
  56 #include <linux/poll.h>
  57
  58 #include <linux/io.h>
  59 #include <linux/uaccess.h>
  60
  61 #include "mpt2sas_base.h"
  62 #include "mpt2sas_ctl.h"
  63
  64 static struct fasync_struct *async_queue;
  65 static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait);
  66
  67 static int _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type,
  68     u8 *issue_reset);
  69
  70 /**
  71  * enum block_state - blocking state
  72  * @NON_BLOCKING: non blocking
  73  * @BLOCKING: blocking
  74  *
  75  * These states are for ioctls that need to wait for a response
  76  * from firmware, so they probably require sleep.
  77  */
  78 enum block_state {
  79         NON_BLOCKING,
  80         BLOCKING,
  81 };
  82
  83 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
  84 /**
  85  * _ctl_display_some_debug - debug routine
  86  * @ioc: per adapter object
  87  * @smid: system request message index
  88  * @calling_function_name: string pass from calling function
  89  * @mpi_reply: reply message frame
  90  * Context: none.
  91  *
  92  * Function for displaying debug info helpfull when debugging issues
  93  * in this module.
  94  */
  95 static void
  96 _ctl_display_some_debug(struct MPT2SAS_ADAPTER *ioc, u16 smid,
  97     char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
  98 {
  99         Mpi2ConfigRequest_t *mpi_request;
 100         char *desc = NULL;
 101
 102         if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
 103                 return;
 104
 105         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
 106         switch (mpi_request->Function) {
 107         case MPI2_FUNCTION_SCSI_IO_REQUEST:
 108         {
 109                 Mpi2SCSIIORequest_t *scsi_request =
 110                     (Mpi2SCSIIORequest_t *)mpi_request;
 111
 112                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 113                     "scsi_io, cmd(0x%02x), cdb_len(%d)",
 114                     scsi_request->CDB.CDB32[0],
 115                     le16_to_cpu(scsi_request->IoFlags) & 0xF);
 116                 desc = ioc->tmp_string;
 117                 break;
 118         }
 119         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 120                 desc = "task_mgmt";
 121                 break;
 122         case MPI2_FUNCTION_IOC_INIT:
 123                 desc = "ioc_init";
 124                 break;
 125         case MPI2_FUNCTION_IOC_FACTS:
 126                 desc = "ioc_facts";
 127                 break;
 128         case MPI2_FUNCTION_CONFIG:
 129         {
 130                 Mpi2ConfigRequest_t *config_request =
 131                     (Mpi2ConfigRequest_t *)mpi_request;
 132
 133                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 134                     "config, type(0x%02x), ext_type(0x%02x), number(%d)",
 135                     (config_request->Header.PageType &
 136                      MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
 137                     config_request->Header.PageNumber);
 138                 desc = ioc->tmp_string;
 139                 break;
 140         }
 141         case MPI2_FUNCTION_PORT_FACTS:
 142                 desc = "port_facts";
 143                 break;
 144         case MPI2_FUNCTION_PORT_ENABLE:
 145                 desc = "port_enable";
 146                 break;
 147         case MPI2_FUNCTION_EVENT_NOTIFICATION:
 148                 desc = "event_notification";
 149                 break;
 150         case MPI2_FUNCTION_FW_DOWNLOAD:
 151                 desc = "fw_download";
 152                 break;
 153         case MPI2_FUNCTION_FW_UPLOAD:
 154                 desc = "fw_upload";
 155                 break;
 156         case MPI2_FUNCTION_RAID_ACTION:
 157                 desc = "raid_action";
 158                 break;
 159         case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
 160         {
 161                 Mpi2SCSIIORequest_t *scsi_request =
 162                     (Mpi2SCSIIORequest_t *)mpi_request;
 163
 164                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 165                     "raid_pass, cmd(0x%02x), cdb_len(%d)",
 166                     scsi_request->CDB.CDB32[0],
 167                     le16_to_cpu(scsi_request->IoFlags) & 0xF);
 168                 desc = ioc->tmp_string;
 169                 break;
 170         }
 171         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 172                 desc = "sas_iounit_cntl";
 173                 break;
 174         case MPI2_FUNCTION_SATA_PASSTHROUGH:
 175                 desc = "sata_pass";
 176                 break;
 177         case MPI2_FUNCTION_DIAG_BUFFER_POST:
 178                 desc = "diag_buffer_post";
 179                 break;
 180         case MPI2_FUNCTION_DIAG_RELEASE:
 181                 desc = "diag_release";
 182                 break;
 183         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 184                 desc = "smp_passthrough";
 185                 break;
 186         }
 187
 188         if (!desc)
 189                 return;
 190
 191         printk(MPT2SAS_DEBUG_FMT "%s: %s, smid(%d)\n",
 192             ioc->name, calling_function_name, desc, smid);
 193
 194         if (!mpi_reply)
 195                 return;
 196
 197         if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
 198                 printk(MPT2SAS_DEBUG_FMT
 199                     "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
 200                     ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
 201                     le32_to_cpu(mpi_reply->IOCLogInfo));
 202
 203         if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 204             mpi_request->Function ==
 205             MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 206                 Mpi2SCSIIOReply_t *scsi_reply =
 207                     (Mpi2SCSIIOReply_t *)mpi_reply;
 208                 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
 209                         printk(MPT2SAS_DEBUG_FMT
 210                             "\tscsi_state(0x%02x), scsi_status"
 211                             "(0x%02x)\n", ioc->name,
 212                             scsi_reply->SCSIState,
 213                             scsi_reply->SCSIStatus);
 214         }
 215 }
 216 #endif
 217
 218 /**
 219  * mpt2sas_ctl_done - ctl module completion routine
 220  * @ioc: per adapter object
 221  * @smid: system request message index
 222  * @VF_ID: virtual function id
 223  * @reply: reply message frame(lower 32bit addr)
 224  * Context: none.
 225  *
 226  * The callback handler when using ioc->ctl_cb_idx.
 227  *
 228  * Return nothing.
 229  */
 230 void
 231 mpt2sas_ctl_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply)
 232 {
 233         MPI2DefaultReply_t *mpi_reply;
 234
 235         if (ioc->ctl_cmds.status == MPT2_CMD_NOT_USED)
 236                 return;
 237         if (ioc->ctl_cmds.smid != smid)
 238                 return;
 239         ioc->ctl_cmds.status |= MPT2_CMD_COMPLETE;
 240         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 241         if (mpi_reply) {
 242                 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 243                 ioc->ctl_cmds.status |= MPT2_CMD_REPLY_VALID;
 244         }
 245 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 246         _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
 247 #endif
 248         ioc->ctl_cmds.status &= ~MPT2_CMD_PENDING;
 249         complete(&ioc->ctl_cmds.done);
 250 }
 251
 252 /**
 253  * _ctl_check_event_type - determines when an event needs logging
 254  * @ioc: per adapter object
 255  * @event: firmware event
 256  *
 257  * The bitmask in ioc->event_type[] indicates which events should be
 258  * be saved in the driver event_log.  This bitmask is set by application.
 259  *
 260  * Returns 1 when event should be captured, or zero means no match.
 261  */
 262 static int
 263 _ctl_check_event_type(struct MPT2SAS_ADAPTER *ioc, u16 event)
 264 {
 265         u16 i;
 266         u32 desired_event;
 267
 268         if (event >= 128 || !event || !ioc->event_log)
 269                 return 0;
 270
 271         desired_event = (1 << (event % 32));
 272         if (!desired_event)
 273                 desired_event = 1;
 274         i = event / 32;
 275         return desired_event & ioc->event_type[i];
 276 }
 277
 278 /**
 279  * mpt2sas_ctl_add_to_event_log - add event
 280  * @ioc: per adapter object
 281  * @mpi_reply: reply message frame
 282  *
 283  * Return nothing.
 284  */
 285 void
 286 mpt2sas_ctl_add_to_event_log(struct MPT2SAS_ADAPTER *ioc,
 287     Mpi2EventNotificationReply_t *mpi_reply)
 288 {
 289         struct MPT2_IOCTL_EVENTS *event_log;
 290         u16 event;
 291         int i;
 292         u32 sz, event_data_sz;
 293         u8 send_aen = 0;
 294
 295         if (!ioc->event_log)
 296                 return;
 297
 298         event = le16_to_cpu(mpi_reply->Event);
 299
 300         if (_ctl_check_event_type(ioc, event)) {
 301
 302                 /* insert entry into circular event_log */
 303                 i = ioc->event_context % MPT2SAS_CTL_EVENT_LOG_SIZE;
 304                 event_log = ioc->event_log;
 305                 event_log[i].event = event;
 306                 event_log[i].context = ioc->event_context++;
 307
 308                 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
 309                 sz = min_t(u32, event_data_sz, MPT2_EVENT_DATA_SIZE);
 310                 memset(event_log[i].data, 0, MPT2_EVENT_DATA_SIZE);
 311                 memcpy(event_log[i].data, mpi_reply->EventData, sz);
 312                 send_aen = 1;
 313         }
 314
 315         /* This aen_event_read_flag flag is set until the
 316          * application has read the event log.
 317          * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
 318          */
 319         if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
 320             (send_aen && !ioc->aen_event_read_flag)) {
 321                 ioc->aen_event_read_flag = 1;
 322                 wake_up_interruptible(&ctl_poll_wait);
 323                 if (async_queue)
 324                         kill_fasync(&async_queue, SIGIO, POLL_IN);
 325         }
 326 }
 327
 328 /**
 329  * mpt2sas_ctl_event_callback - firmware event handler (called at ISR time)
 330  * @ioc: per adapter object
 331  * @VF_ID: virtual function id
 332  * @reply: reply message frame(lower 32bit addr)
 333  * Context: interrupt.
 334  *
 335  * This function merely adds a new work task into ioc->firmware_event_thread.
 336  * The tasks are worked from _firmware_event_work in user context.
 337  *
 338  * Return nothing.
 339  */
 340 void
 341 mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, u32 reply)
 342 {
 343         Mpi2EventNotificationReply_t *mpi_reply;
 344
 345         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 346         mpt2sas_ctl_add_to_event_log(ioc, mpi_reply);
 347 }
 348
 349 /**
 350  * _ctl_verify_adapter - validates ioc_number passed from application
 351  * @ioc: per adapter object
 352  * @iocpp: The ioc pointer is returned in this.
 353  *
 354  * Return (-1) means error, else ioc_number.
 355  */
 356 static int
 357 _ctl_verify_adapter(int ioc_number, struct MPT2SAS_ADAPTER **iocpp)
 358 {
 359         struct MPT2SAS_ADAPTER *ioc;
 360
 361         list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
 362                 if (ioc->id != ioc_number)
 363                         continue;
 364                 *iocpp = ioc;
 365                 return ioc_number;
 366         }
 367         *iocpp = NULL;
 368         return -1;
 369 }
 370
 371 /**
 372  * mpt2sas_ctl_reset_handler - reset callback handler (for ctl)
 373  * @ioc: per adapter object
 374  * @reset_phase: phase
 375  *
 376  * The handler for doing any required cleanup or initialization.
 377  *
 378  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
 379  * MPT2_IOC_DONE_RESET
 380  */
 381 void
 382 mpt2sas_ctl_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
 383 {
 384         int i;
 385         u8 issue_reset;
 386
 387         switch (reset_phase) {
 388         case MPT2_IOC_PRE_RESET:
 389                 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
 390                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
 391                 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
 392                         if (!(ioc->diag_buffer_status[i] &
 393                             MPT2_DIAG_BUFFER_IS_REGISTERED))
 394                                 continue;
 395                         if ((ioc->diag_buffer_status[i] &
 396                             MPT2_DIAG_BUFFER_IS_RELEASED))
 397                                 continue;
 398                         _ctl_send_release(ioc, i, &issue_reset);
 399                 }
 400                 break;
 401         case MPT2_IOC_AFTER_RESET:
 402                 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
 403                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
 404                 if (ioc->ctl_cmds.status & MPT2_CMD_PENDING) {
 405                         ioc->ctl_cmds.status |= MPT2_CMD_RESET;
 406                         mpt2sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
 407                         complete(&ioc->ctl_cmds.done);
 408                 }
 409                 break;
 410         case MPT2_IOC_DONE_RESET:
 411                 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
 412                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
 413
 414                 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
 415                         if (!(ioc->diag_buffer_status[i] &
 416                             MPT2_DIAG_BUFFER_IS_REGISTERED))
 417                                 continue;
 418                         if ((ioc->diag_buffer_status[i] &
 419                             MPT2_DIAG_BUFFER_IS_RELEASED))
 420                                 continue;
 421                         ioc->diag_buffer_status[i] |=
 422                             MPT2_DIAG_BUFFER_IS_DIAG_RESET;
 423                 }
 424                 break;
 425         }
 426 }
 427
 428 /**
 429  * _ctl_fasync -
 430  * @fd -
 431  * @filep -
 432  * @mode -
 433  *
 434  * Called when application request fasyn callback handler.
 435  */
 436 static int
 437 _ctl_fasync(int fd, struct file *filep, int mode)
 438 {
 439         return fasync_helper(fd, filep, mode, &async_queue);
 440 }
 441
 442 /**
 443  * _ctl_release -
 444  * @inode -
 445  * @filep -
 446  *
 447  * Called when application releases the fasyn callback handler.
 448  */
 449 static int
 450 _ctl_release(struct inode *inode, struct file *filep)
 451 {
 452         return fasync_helper(-1, filep, 0, &async_queue);
 453 }
 454
 455 /**
 456  * _ctl_poll -
 457  * @file -
 458  * @wait -
 459  *
 460  */
 461 static unsigned int
 462 _ctl_poll(struct file *filep, poll_table *wait)
 463 {
 464         struct MPT2SAS_ADAPTER *ioc;
 465
 466         poll_wait(filep, &ctl_poll_wait, wait);
 467
 468         list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
 469                 if (ioc->aen_event_read_flag)
 470                         return POLLIN | POLLRDNORM;
 471         }
 472         return 0;
 473 }
 474
 475 /**
 476  * _ctl_do_task_abort - assign an active smid to the abort_task
 477  * @ioc: per adapter object
 478  * @karg - (struct mpt2_ioctl_command)
 479  * @tm_request - pointer to mf from user space
 480  *
 481  * Returns 0 when an smid if found, else fail.
 482  * during failure, the reply frame is filled.
 483  */
 484 static int
 485 _ctl_do_task_abort(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command *karg,
 486     Mpi2SCSITaskManagementRequest_t *tm_request)
 487 {
 488         u8 found = 0;
 489         u16 i;
 490         u16 handle;
 491         struct scsi_cmnd *scmd;
 492         struct MPT2SAS_DEVICE *priv_data;
 493         unsigned long flags;
 494         Mpi2SCSITaskManagementReply_t *tm_reply;
 495         u32 sz;
 496         u32 lun;
 497
 498         lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
 499
 500         handle = le16_to_cpu(tm_request->DevHandle);
 501         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
 502         for (i = ioc->request_depth; i && !found; i--) {
 503                 scmd = ioc->scsi_lookup[i - 1].scmd;
 504                 if (scmd == NULL || scmd->device == NULL ||
 505                     scmd->device->hostdata == NULL)
 506                         continue;
 507                 if (lun != scmd->device->lun)
 508                         continue;
 509                 priv_data = scmd->device->hostdata;
 510                 if (priv_data->sas_target == NULL)
 511                         continue;
 512                 if (priv_data->sas_target->handle != handle)
 513                         continue;
 514                 tm_request->TaskMID = cpu_to_le16(ioc->scsi_lookup[i - 1].smid);
 515                 found = 1;
 516         }
 517         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
 518
 519         if (!found) {
 520                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "ABORT_TASK: "
 521                     "DevHandle(0x%04x), lun(%d), no active mid!!\n", ioc->name,
 522                     tm_request->DevHandle, lun));
 523                 tm_reply = ioc->ctl_cmds.reply;
 524                 tm_reply->DevHandle = tm_request->DevHandle;
 525                 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
 526                 tm_reply->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK;
 527                 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
 528                 tm_reply->VP_ID = tm_request->VP_ID;
 529                 tm_reply->VF_ID = tm_request->VF_ID;
 530                 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
 531                 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
 532                     sz))
 533                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 534                             __LINE__, __func__);
 535                 return 1;
 536         }
 537
 538         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "ABORT_TASK: "
 539             "DevHandle(0x%04x), lun(%d), smid(%d)\n", ioc->name,
 540             tm_request->DevHandle, lun, tm_request->TaskMID));
 541         return 0;
 542 }
 543
 544 /**
 545  * _ctl_do_mpt_command - main handler for MPT2COMMAND opcode
 546  * @ioc: per adapter object
 547  * @karg - (struct mpt2_ioctl_command)
 548  * @mf - pointer to mf in user space
 549  * @state - NON_BLOCKING or BLOCKING
 550  */
 551 static long
 552 _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc,
 553     struct mpt2_ioctl_command karg, void __user *mf, enum block_state state)
 554 {
 555         MPI2RequestHeader_t *mpi_request;
 556         MPI2DefaultReply_t *mpi_reply;
 557         u32 ioc_state;
 558         u16 ioc_status;
 559         u16 smid;
 560         unsigned long timeout, timeleft;
 561         u8 issue_reset;
 562         u32 sz;
 563         void *psge;
 564         void *priv_sense = NULL;
 565         void *data_out = NULL;
 566         dma_addr_t data_out_dma;
 567         size_t data_out_sz = 0;
 568         void *data_in = NULL;
 569         dma_addr_t data_in_dma;
 570         size_t data_in_sz = 0;
 571         u32 sgl_flags;
 572         long ret;
 573         u16 wait_state_count;
 574
 575         issue_reset = 0;
 576
 577         if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
 578                 return -EAGAIN;
 579         else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
 580                 return -ERESTARTSYS;
 581
 582         if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
 583                 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
 584                     ioc->name, __func__);
 585                 ret = -EAGAIN;
 586                 goto out;
 587         }
 588
 589         wait_state_count = 0;
 590         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
 591         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
 592                 if (wait_state_count++ == 10) {
 593                         printk(MPT2SAS_ERR_FMT
 594                             "%s: failed due to ioc not operational\n",
 595                             ioc->name, __func__);
 596                         ret = -EFAULT;
 597                         goto out;
 598                 }
 599                 ssleep(1);
 600                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
 601                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
 602                     "operational state(count=%d)\n", ioc->name,
 603                     __func__, wait_state_count);
 604         }
 605         if (wait_state_count)
 606                 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
 607                     ioc->name, __func__);
 608
 609         smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
 610         if (!smid) {
 611                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
 612                     ioc->name, __func__);
 613                 ret = -EAGAIN;
 614                 goto out;
 615         }
 616
 617         ret = 0;
 618         ioc->ctl_cmds.status = MPT2_CMD_PENDING;
 619         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
 620         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
 621         ioc->ctl_cmds.smid = smid;
 622         data_out_sz = karg.data_out_size;
 623         data_in_sz = karg.data_in_size;
 624
 625         /* copy in request message frame from user */
 626         if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
 627                 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__,
 628                     __func__);
 629                 ret = -EFAULT;
 630                 mpt2sas_base_free_smid(ioc, smid);
 631                 goto out;
 632         }
 633
 634         if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 635             mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 636                 if (!mpi_request->FunctionDependent1 ||
 637                     mpi_request->FunctionDependent1 >
 638                     cpu_to_le16(ioc->facts.MaxDevHandle)) {
 639                         ret = -EINVAL;
 640                         mpt2sas_base_free_smid(ioc, smid);
 641                         goto out;
 642                 }
 643         }
 644
 645         /* obtain dma-able memory for data transfer */
 646         if (data_out_sz) /* WRITE */ {
 647                 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
 648                     &data_out_dma);
 649                 if (!data_out) {
 650                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 651                             __LINE__, __func__);
 652                         ret = -ENOMEM;
 653                         mpt2sas_base_free_smid(ioc, smid);
 654                         goto out;
 655                 }
 656                 if (copy_from_user(data_out, karg.data_out_buf_ptr,
 657                         data_out_sz)) {
 658                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 659                             __LINE__, __func__);
 660                         ret =  -EFAULT;
 661                         mpt2sas_base_free_smid(ioc, smid);
 662                         goto out;
 663                 }
 664         }
 665
 666         if (data_in_sz) /* READ */ {
 667                 data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
 668                     &data_in_dma);
 669                 if (!data_in) {
 670                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 671                             __LINE__, __func__);
 672                         ret = -ENOMEM;
 673                         mpt2sas_base_free_smid(ioc, smid);
 674                         goto out;
 675                 }
 676         }
 677
 678         /* add scatter gather elements */
 679         psge = (void *)mpi_request + (karg.data_sge_offset*4);
 680
 681         if (!data_out_sz && !data_in_sz) {
 682                 mpt2sas_base_build_zero_len_sge(ioc, psge);
 683         } else if (data_out_sz && data_in_sz) {
 684                 /* WRITE sgel first */
 685                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
 686                     MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
 687                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
 688                 ioc->base_add_sg_single(psge, sgl_flags |
 689                     data_out_sz, data_out_dma);
 690
 691                 /* incr sgel */
 692                 psge += ioc->sge_size;
 693
 694                 /* READ sgel last */
 695                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
 696                     MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
 697                     MPI2_SGE_FLAGS_END_OF_LIST);
 698                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
 699                 ioc->base_add_sg_single(psge, sgl_flags |
 700                     data_in_sz, data_in_dma);
 701         } else if (data_out_sz) /* WRITE */ {
 702                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
 703                     MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
 704                     MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC);
 705                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
 706                 ioc->base_add_sg_single(psge, sgl_flags |
 707                     data_out_sz, data_out_dma);
 708         } else if (data_in_sz) /* READ */ {
 709                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
 710                     MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
 711                     MPI2_SGE_FLAGS_END_OF_LIST);
 712                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
 713                 ioc->base_add_sg_single(psge, sgl_flags |
 714                     data_in_sz, data_in_dma);
 715         }
 716
 717         /* send command to firmware */
 718 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 719         _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
 720 #endif
 721
 722         switch (mpi_request->Function) {
 723         case MPI2_FUNCTION_SCSI_IO_REQUEST:
 724         case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
 725         {
 726                 Mpi2SCSIIORequest_t *scsiio_request =
 727                     (Mpi2SCSIIORequest_t *)mpi_request;
 728                 scsiio_request->SenseBufferLowAddress =
 729                     (u32)mpt2sas_base_get_sense_buffer_dma(ioc, smid);
 730                 priv_sense = mpt2sas_base_get_sense_buffer(ioc, smid);
 731                 memset(priv_sense, 0, SCSI_SENSE_BUFFERSIZE);
 732                 mpt2sas_base_put_smid_scsi_io(ioc, smid, 0,
 733                     le16_to_cpu(mpi_request->FunctionDependent1));
 734                 break;
 735         }
 736         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 737         {
 738                 Mpi2SCSITaskManagementRequest_t *tm_request =
 739                     (Mpi2SCSITaskManagementRequest_t *)mpi_request;
 740
 741                 if (tm_request->TaskType ==
 742                     MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) {
 743                         if (_ctl_do_task_abort(ioc, &karg, tm_request)) {
 744                                 mpt2sas_base_free_smid(ioc, smid);
 745                                 goto out;
 746                         }
 747                 }
 748
 749                 mutex_lock(&ioc->tm_cmds.mutex);
 750                 mpt2sas_scsih_set_tm_flag(ioc, le16_to_cpu(
 751                     tm_request->DevHandle));
 752                 mpt2sas_base_put_smid_hi_priority(ioc, smid,
 753                     mpi_request->VF_ID);
 754                 break;
 755         }
 756         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 757         {
 758                 Mpi2SmpPassthroughRequest_t *smp_request =
 759                     (Mpi2SmpPassthroughRequest_t *)mpi_request;
 760                 u8 *data;
 761
 762                 /* ioc determines which port to use */
 763                 smp_request->PhysicalPort = 0xFF;
 764                 if (smp_request->PassthroughFlags &
 765                     MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
 766                         data = (u8 *)&smp_request->SGL;
 767                 else
 768                         data = data_out;
 769
 770                 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
 771                         ioc->ioc_link_reset_in_progress = 1;
 772                         ioc->ignore_loginfos = 1;
 773                 }
 774                 mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
 775                 break;
 776         }
 777         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 778         {
 779                 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
 780                     (Mpi2SasIoUnitControlRequest_t *)mpi_request;
 781
 782                 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
 783                     || sasiounit_request->Operation ==
 784                     MPI2_SAS_OP_PHY_LINK_RESET) {
 785                         ioc->ioc_link_reset_in_progress = 1;
 786                         ioc->ignore_loginfos = 1;
 787                 }
 788                 mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
 789                 break;
 790         }
 791         default:
 792                 mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
 793                 break;
 794         }
 795
 796         if (karg.timeout < MPT2_IOCTL_DEFAULT_TIMEOUT)
 797                 timeout = MPT2_IOCTL_DEFAULT_TIMEOUT;
 798         else
 799                 timeout = karg.timeout;
 800         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
 801             timeout*HZ);
 802         if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
 803                 Mpi2SCSITaskManagementRequest_t *tm_request =
 804                     (Mpi2SCSITaskManagementRequest_t *)mpi_request;
 805                 mutex_unlock(&ioc->tm_cmds.mutex);
 806                 mpt2sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
 807                     tm_request->DevHandle));
 808         } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
 809             mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
 810                 ioc->ioc_link_reset_in_progress) {
 811                 ioc->ioc_link_reset_in_progress = 0;
 812                 ioc->ignore_loginfos = 0;
 813         }
 814         if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
 815                 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
 816                     __func__);
 817                 _debug_dump_mf(mpi_request, karg.data_sge_offset);
 818                 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
 819                         issue_reset = 1;
 820                 goto issue_host_reset;
 821         }
 822
 823         mpi_reply = ioc->ctl_cmds.reply;
 824         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
 825
 826 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 827         if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
 828             (ioc->logging_level & MPT_DEBUG_TM)) {
 829                 Mpi2SCSITaskManagementReply_t *tm_reply =
 830                     (Mpi2SCSITaskManagementReply_t *)mpi_reply;
 831
 832                 printk(MPT2SAS_DEBUG_FMT "TASK_MGMT: "
 833                     "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
 834                     "TerminationCount(0x%08x)\n", ioc->name,
 835                     tm_reply->IOCStatus, tm_reply->IOCLogInfo,
 836                     tm_reply->TerminationCount);
 837         }
 838 #endif
 839         /* copy out xdata to user */
 840         if (data_in_sz) {
 841                 if (copy_to_user(karg.data_in_buf_ptr, data_in,
 842                     data_in_sz)) {
 843                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 844                             __LINE__, __func__);
 845                         ret = -ENODATA;
 846                         goto out;
 847                 }
 848         }
 849
 850         /* copy out reply message frame to user */
 851         if (karg.max_reply_bytes) {
 852                 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
 853                 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
 854                     sz)) {
 855                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 856                             __LINE__, __func__);
 857                         ret = -ENODATA;
 858                         goto out;
 859                 }
 860         }
 861
 862         /* copy out sense to user */
 863         if (karg.max_sense_bytes && (mpi_request->Function ==
 864             MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
 865             MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
 866                 sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
 867                 if (copy_to_user(karg.sense_data_ptr, priv_sense, sz)) {
 868                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 869                             __LINE__, __func__);
 870                         ret = -ENODATA;
 871                         goto out;
 872                 }
 873         }
 874
 875  issue_host_reset:
 876         if (issue_reset) {
 877                 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 878                     mpi_request->Function ==
 879                     MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
 880                         printk(MPT2SAS_INFO_FMT "issue target reset: handle "
 881                             "= (0x%04x)\n", ioc->name,
 882                             mpi_request->FunctionDependent1);
 883                         mutex_lock(&ioc->tm_cmds.mutex);
 884                         mpt2sas_scsih_issue_tm(ioc,
 885                             mpi_request->FunctionDependent1, 0,
 886                             MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10);
 887                         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
 888                         mutex_unlock(&ioc->tm_cmds.mutex);
 889                 } else
 890                         mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
 891                             FORCE_BIG_HAMMER);
 892         }
 893
 894  out:
 895
 896         /* free memory associated with sg buffers */
 897         if (data_in)
 898                 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
 899                     data_in_dma);
 900
 901         if (data_out)
 902                 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
 903                     data_out_dma);
 904
 905         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
 906         mutex_unlock(&ioc->ctl_cmds.mutex);
 907         return ret;
 908 }
 909
 910 /**
 911  * _ctl_getiocinfo - main handler for MPT2IOCINFO opcode
 912  * @arg - user space buffer containing ioctl content
 913  */
 914 static long
 915 _ctl_getiocinfo(void __user *arg)
 916 {
 917         struct mpt2_ioctl_iocinfo karg;
 918         struct MPT2SAS_ADAPTER *ioc;
 919         u8 revision;
 920
 921         if (copy_from_user(&karg, arg, sizeof(karg))) {
 922                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
 923                     __FILE__, __LINE__, __func__);
 924                 return -EFAULT;
 925         }
 926         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
 927                 return -ENODEV;
 928
 929         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
 930             __func__));
 931
 932         memset(&karg, 0 , sizeof(karg));
 933         karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
 934         if (ioc->pfacts)
 935                 karg.port_number = ioc->pfacts[0].PortNumber;
 936         pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
 937         karg.hw_rev = revision;
 938         karg.pci_id = ioc->pdev->device;
 939         karg.subsystem_device = ioc->pdev->subsystem_device;
 940         karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
 941         karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
 942         karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
 943         karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
 944         karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
 945         karg.firmware_version = ioc->facts.FWVersion.Word;
 946         strcpy(karg.driver_version, MPT2SAS_DRIVER_NAME);
 947         strcat(karg.driver_version, "-");
 948         strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
 949         karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
 950
 951         if (copy_to_user(arg, &karg, sizeof(karg))) {
 952                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
 953                     __FILE__, __LINE__, __func__);
 954                 return -EFAULT;
 955         }
 956         return 0;
 957 }
 958
 959 /**
 960  * _ctl_eventquery - main handler for MPT2EVENTQUERY opcode
 961  * @arg - user space buffer containing ioctl content
 962  */
 963 static long
 964 _ctl_eventquery(void __user *arg)
 965 {
 966         struct mpt2_ioctl_eventquery karg;
 967         struct MPT2SAS_ADAPTER *ioc;
 968
 969         if (copy_from_user(&karg, arg, sizeof(karg))) {
 970                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
 971                     __FILE__, __LINE__, __func__);
 972                 return -EFAULT;
 973         }
 974         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
 975                 return -ENODEV;
 976
 977         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
 978             __func__));
 979
 980         karg.event_entries = MPT2SAS_CTL_EVENT_LOG_SIZE;
 981         memcpy(karg.event_types, ioc->event_type,
 982             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
 983
 984         if (copy_to_user(arg, &karg, sizeof(karg))) {
 985                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
 986                     __FILE__, __LINE__, __func__);
 987                 return -EFAULT;
 988         }
 989         return 0;
 990 }
 991
 992 /**
 993  * _ctl_eventenable - main handler for MPT2EVENTENABLE opcode
 994  * @arg - user space buffer containing ioctl content
 995  */
 996 static long
 997 _ctl_eventenable(void __user *arg)
 998 {
 999         struct mpt2_ioctl_eventenable karg;
1000         struct MPT2SAS_ADAPTER *ioc;
1001
1002         if (copy_from_user(&karg, arg, sizeof(karg))) {
1003                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1004                     __FILE__, __LINE__, __func__);
1005                 return -EFAULT;
1006         }
1007         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1008                 return -ENODEV;
1009
1010         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1011             __func__));
1012
1013         if (ioc->event_log)
1014                 return 0;
1015         memcpy(ioc->event_type, karg.event_types,
1016             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1017         mpt2sas_base_validate_event_type(ioc, ioc->event_type);
1018
1019         /* initialize event_log */
1020         ioc->event_context = 0;
1021         ioc->aen_event_read_flag = 0;
1022         ioc->event_log = kcalloc(MPT2SAS_CTL_EVENT_LOG_SIZE,
1023             sizeof(struct MPT2_IOCTL_EVENTS), GFP_KERNEL);
1024         if (!ioc->event_log) {
1025                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1026                     __FILE__, __LINE__, __func__);
1027                 return -ENOMEM;
1028         }
1029         return 0;
1030 }
1031
1032 /**
1033  * _ctl_eventreport - main handler for MPT2EVENTREPORT opcode
1034  * @arg - user space buffer containing ioctl content
1035  */
1036 static long
1037 _ctl_eventreport(void __user *arg)
1038 {
1039         struct mpt2_ioctl_eventreport karg;
1040         struct MPT2SAS_ADAPTER *ioc;
1041         u32 number_bytes, max_events, max;
1042         struct mpt2_ioctl_eventreport __user *uarg = arg;
1043
1044         if (copy_from_user(&karg, arg, sizeof(karg))) {
1045                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1046                     __FILE__, __LINE__, __func__);
1047                 return -EFAULT;
1048         }
1049         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1050                 return -ENODEV;
1051
1052         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1053             __func__));
1054
1055         number_bytes = karg.hdr.max_data_size -
1056             sizeof(struct mpt2_ioctl_header);
1057         max_events = number_bytes/sizeof(struct MPT2_IOCTL_EVENTS);
1058         max = min_t(u32, MPT2SAS_CTL_EVENT_LOG_SIZE, max_events);
1059
1060         /* If fewer than 1 event is requested, there must have
1061          * been some type of error.
1062          */
1063         if (!max || !ioc->event_log)
1064                 return -ENODATA;
1065
1066         number_bytes = max * sizeof(struct MPT2_IOCTL_EVENTS);
1067         if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1068                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1069                     __FILE__, __LINE__, __func__);
1070                 return -EFAULT;
1071         }
1072
1073         /* reset flag so SIGIO can restart */
1074         ioc->aen_event_read_flag = 0;
1075         return 0;
1076 }
1077
1078 /**
1079  * _ctl_do_reset - main handler for MPT2HARDRESET opcode
1080  * @arg - user space buffer containing ioctl content
1081  */
1082 static long
1083 _ctl_do_reset(void __user *arg)
1084 {
1085         struct mpt2_ioctl_diag_reset karg;
1086         struct MPT2SAS_ADAPTER *ioc;
1087         int retval;
1088
1089         if (copy_from_user(&karg, arg, sizeof(karg))) {
1090                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1091                     __FILE__, __LINE__, __func__);
1092                 return -EFAULT;
1093         }
1094         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1095                 return -ENODEV;
1096
1097         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1098             __func__));
1099
1100         retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1101             FORCE_BIG_HAMMER);
1102         printk(MPT2SAS_INFO_FMT "host reset: %s\n",
1103             ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1104         return 0;
1105 }
1106
1107 /**
1108  * _ctl_btdh_search_sas_device - searching for sas device
1109  * @ioc: per adapter object
1110  * @btdh: btdh ioctl payload
1111  */
1112 static int
1113 _ctl_btdh_search_sas_device(struct MPT2SAS_ADAPTER *ioc,
1114     struct mpt2_ioctl_btdh_mapping *btdh)
1115 {
1116         struct _sas_device *sas_device;
1117         unsigned long flags;
1118         int rc = 0;
1119
1120         if (list_empty(&ioc->sas_device_list))
1121                 return rc;
1122
1123         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1124         list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1125                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1126                     btdh->handle == sas_device->handle) {
1127                         btdh->bus = sas_device->channel;
1128                         btdh->id = sas_device->id;
1129                         rc = 1;
1130                         goto out;
1131                 } else if (btdh->bus == sas_device->channel && btdh->id ==
1132                     sas_device->id && btdh->handle == 0xFFFF) {
1133                         btdh->handle = sas_device->handle;
1134                         rc = 1;
1135                         goto out;
1136                 }
1137         }
1138  out:
1139         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1140         return rc;
1141 }
1142
1143 /**
1144  * _ctl_btdh_search_raid_device - searching for raid device
1145  * @ioc: per adapter object
1146  * @btdh: btdh ioctl payload
1147  */
1148 static int
1149 _ctl_btdh_search_raid_device(struct MPT2SAS_ADAPTER *ioc,
1150     struct mpt2_ioctl_btdh_mapping *btdh)
1151 {
1152         struct _raid_device *raid_device;
1153         unsigned long flags;
1154         int rc = 0;
1155
1156         if (list_empty(&ioc->raid_device_list))
1157                 return rc;
1158
1159         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1160         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1161                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1162                     btdh->handle == raid_device->handle) {
1163                         btdh->bus = raid_device->channel;
1164                         btdh->id = raid_device->id;
1165                         rc = 1;
1166                         goto out;
1167                 } else if (btdh->bus == raid_device->channel && btdh->id ==
1168                     raid_device->id && btdh->handle == 0xFFFF) {
1169                         btdh->handle = raid_device->handle;
1170                         rc = 1;
1171                         goto out;
1172                 }
1173         }
1174  out:
1175         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1176         return rc;
1177 }
1178
1179 /**
1180  * _ctl_btdh_mapping - main handler for MPT2BTDHMAPPING opcode
1181  * @arg - user space buffer containing ioctl content
1182  */
1183 static long
1184 _ctl_btdh_mapping(void __user *arg)
1185 {
1186         struct mpt2_ioctl_btdh_mapping karg;
1187         struct MPT2SAS_ADAPTER *ioc;
1188         int rc;
1189
1190         if (copy_from_user(&karg, arg, sizeof(karg))) {
1191                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1192                     __FILE__, __LINE__, __func__);
1193                 return -EFAULT;
1194         }
1195         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1196                 return -ENODEV;
1197
1198         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1199             __func__));
1200
1201         rc = _ctl_btdh_search_sas_device(ioc, &karg);
1202         if (!rc)
1203                 _ctl_btdh_search_raid_device(ioc, &karg);
1204
1205         if (copy_to_user(arg, &karg, sizeof(karg))) {
1206                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1207                     __FILE__, __LINE__, __func__);
1208                 return -EFAULT;
1209         }
1210         return 0;
1211 }
1212
1213 /**
1214  * _ctl_diag_capability - return diag buffer capability
1215  * @ioc: per adapter object
1216  * @buffer_type: specifies either TRACE or SNAPSHOT
1217  *
1218  * returns 1 when diag buffer support is enabled in firmware
1219  */
1220 static u8
1221 _ctl_diag_capability(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type)
1222 {
1223         u8 rc = 0;
1224
1225         switch (buffer_type) {
1226         case MPI2_DIAG_BUF_TYPE_TRACE:
1227                 if (ioc->facts.IOCCapabilities &
1228                     MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1229                         rc = 1;
1230                 break;
1231         case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1232                 if (ioc->facts.IOCCapabilities &
1233                     MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1234                         rc = 1;
1235                 break;
1236         }
1237
1238         return rc;
1239 }
1240
1241 /**
1242  * _ctl_diag_register - application register with driver
1243  * @arg - user space buffer containing ioctl content
1244  * @state - NON_BLOCKING or BLOCKING
1245  *
1246  * This will allow the driver to setup any required buffers that will be
1247  * needed by firmware to communicate with the driver.
1248  */
1249 static long
1250 _ctl_diag_register(void __user *arg, enum block_state state)
1251 {
1252         struct mpt2_diag_register karg;
1253         struct MPT2SAS_ADAPTER *ioc;
1254         int rc, i;
1255         void *request_data = NULL;
1256         dma_addr_t request_data_dma;
1257         u32 request_data_sz = 0;
1258         Mpi2DiagBufferPostRequest_t *mpi_request;
1259         Mpi2DiagBufferPostReply_t *mpi_reply;
1260         u8 buffer_type;
1261         unsigned long timeleft;
1262         u16 smid;
1263         u16 ioc_status;
1264         u8 issue_reset = 0;
1265
1266         if (copy_from_user(&karg, arg, sizeof(karg))) {
1267                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1268                     __FILE__, __LINE__, __func__);
1269                 return -EFAULT;
1270         }
1271         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1272                 return -ENODEV;
1273
1274         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1275             __func__));
1276
1277         buffer_type = karg.buffer_type;
1278         if (!_ctl_diag_capability(ioc, buffer_type)) {
1279                 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1280                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1281                 return -EPERM;
1282         }
1283
1284         if (ioc->diag_buffer_status[buffer_type] &
1285             MPT2_DIAG_BUFFER_IS_REGISTERED) {
1286                 printk(MPT2SAS_ERR_FMT "%s: already has a registered "
1287                     "buffer for buffer_type(0x%02x)\n", ioc->name, __func__,
1288                     buffer_type);
1289                 return -EINVAL;
1290         }
1291
1292         if (karg.requested_buffer_size % 4)  {
1293                 printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size "
1294                     "is not 4 byte aligned\n", ioc->name, __func__);
1295                 return -EINVAL;
1296         }
1297
1298         if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1299                 return -EAGAIN;
1300         else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1301                 return -ERESTARTSYS;
1302
1303         if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1304                 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1305                     ioc->name, __func__);
1306                 rc = -EAGAIN;
1307                 goto out;
1308         }
1309
1310         smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1311         if (!smid) {
1312                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1313                     ioc->name, __func__);
1314                 rc = -EAGAIN;
1315                 goto out;
1316         }
1317
1318         rc = 0;
1319         ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1320         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1321         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1322         ioc->ctl_cmds.smid = smid;
1323
1324         request_data = ioc->diag_buffer[buffer_type];
1325         request_data_sz = karg.requested_buffer_size;
1326         ioc->unique_id[buffer_type] = karg.unique_id;
1327         ioc->diag_buffer_status[buffer_type] = 0;
1328         memcpy(ioc->product_specific[buffer_type], karg.product_specific,
1329             MPT2_PRODUCT_SPECIFIC_DWORDS);
1330         ioc->diagnostic_flags[buffer_type] = karg.diagnostic_flags;
1331
1332         if (request_data) {
1333                 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1334                 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1335                         pci_free_consistent(ioc->pdev,
1336                             ioc->diag_buffer_sz[buffer_type],
1337                             request_data, request_data_dma);
1338                         request_data = NULL;
1339                 }
1340         }
1341
1342         if (request_data == NULL) {
1343                 ioc->diag_buffer_sz[buffer_type] = 0;
1344                 ioc->diag_buffer_dma[buffer_type] = 0;
1345                 request_data = pci_alloc_consistent(
1346                         ioc->pdev, request_data_sz, &request_data_dma);
1347                 if (request_data == NULL) {
1348                         printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"
1349                             " for diag buffers, requested size(%d)\n",
1350                             ioc->name, __func__, request_data_sz);
1351                         mpt2sas_base_free_smid(ioc, smid);
1352                         return -ENOMEM;
1353                 }
1354                 ioc->diag_buffer[buffer_type] = request_data;
1355                 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1356                 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1357         }
1358
1359         mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1360         mpi_request->BufferType = karg.buffer_type;
1361         mpi_request->Flags = cpu_to_le32(karg.diagnostic_flags);
1362         mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1363         mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1364
1365         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: diag_buffer(0x%p), "
1366             "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data,
1367             (unsigned long long)request_data_dma, mpi_request->BufferLength));
1368
1369         for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1370                 mpi_request->ProductSpecific[i] =
1371                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
1372
1373         mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
1374         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1375             MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1376
1377         if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1378                 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1379                     __func__);
1380                 _debug_dump_mf(mpi_request,
1381                     sizeof(Mpi2DiagBufferPostRequest_t)/4);
1382                 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1383                         issue_reset = 1;
1384                 goto issue_host_reset;
1385         }
1386
1387         /* process the completed Reply Message Frame */
1388         if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1389                 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1390                     ioc->name, __func__);
1391                 rc = -EFAULT;
1392                 goto out;
1393         }
1394
1395         mpi_reply = ioc->ctl_cmds.reply;
1396         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1397
1398         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1399                 ioc->diag_buffer_status[buffer_type] |=
1400                         MPT2_DIAG_BUFFER_IS_REGISTERED;
1401                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1402                     ioc->name, __func__));
1403         } else {
1404                 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1405                     "log_info(0x%08x)\n", ioc->name, __func__,
1406                     ioc_status, mpi_reply->IOCLogInfo);
1407                 rc = -EFAULT;
1408         }
1409
1410  issue_host_reset:
1411         if (issue_reset)
1412                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1413                     FORCE_BIG_HAMMER);
1414
1415  out:
1416
1417         if (rc && request_data)
1418                 pci_free_consistent(ioc->pdev, request_data_sz,
1419                     request_data, request_data_dma);
1420
1421         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1422         mutex_unlock(&ioc->ctl_cmds.mutex);
1423         return rc;
1424 }
1425
1426 /**
1427  * _ctl_diag_unregister - application unregister with driver
1428  * @arg - user space buffer containing ioctl content
1429  *
1430  * This will allow the driver to cleanup any memory allocated for diag
1431  * messages and to free up any resources.
1432  */
1433 static long
1434 _ctl_diag_unregister(void __user *arg)
1435 {
1436         struct mpt2_diag_unregister karg;
1437         struct MPT2SAS_ADAPTER *ioc;
1438         void *request_data;
1439         dma_addr_t request_data_dma;
1440         u32 request_data_sz;
1441         u8 buffer_type;
1442
1443         if (copy_from_user(&karg, arg, sizeof(karg))) {
1444                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1445                     __FILE__, __LINE__, __func__);
1446                 return -EFAULT;
1447         }
1448         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1449                 return -ENODEV;
1450
1451         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1452             __func__));
1453
1454         buffer_type = karg.unique_id & 0x000000ff;
1455         if (!_ctl_diag_capability(ioc, buffer_type)) {
1456                 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1457                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1458                 return -EPERM;
1459         }
1460
1461         if ((ioc->diag_buffer_status[buffer_type] &
1462             MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1463                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1464                     "registered\n", ioc->name, __func__, buffer_type);
1465                 return -EINVAL;
1466         }
1467         if ((ioc->diag_buffer_status[buffer_type] &
1468             MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1469                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) has not been "
1470                     "released\n", ioc->name, __func__, buffer_type);
1471                 return -EINVAL;
1472         }
1473
1474         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1475                 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1476                     "registered\n", ioc->name, __func__, karg.unique_id);
1477                 return -EINVAL;
1478         }
1479
1480         request_data = ioc->diag_buffer[buffer_type];
1481         if (!request_data) {
1482                 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1483                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1484                 return -ENOMEM;
1485         }
1486
1487         request_data_sz = ioc->diag_buffer_sz[buffer_type];
1488         request_data_dma = ioc->diag_buffer_dma[buffer_type];
1489         pci_free_consistent(ioc->pdev, request_data_sz,
1490             request_data, request_data_dma);
1491         ioc->diag_buffer[buffer_type] = NULL;
1492         ioc->diag_buffer_status[buffer_type] = 0;
1493         return 0;
1494 }
1495
1496 /**
1497  * _ctl_diag_query - query relevant info associated with diag buffers
1498  * @arg - user space buffer containing ioctl content
1499  *
1500  * The application will send only buffer_type and unique_id.  Driver will
1501  * inspect unique_id first, if valid, fill in all the info.  If unique_id is
1502  * 0x00, the driver will return info specified by Buffer Type.
1503  */
1504 static long
1505 _ctl_diag_query(void __user *arg)
1506 {
1507         struct mpt2_diag_query karg;
1508         struct MPT2SAS_ADAPTER *ioc;
1509         void *request_data;
1510         int i;
1511         u8 buffer_type;
1512
1513         if (copy_from_user(&karg, arg, sizeof(karg))) {
1514                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1515                     __FILE__, __LINE__, __func__);
1516                 return -EFAULT;
1517         }
1518         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1519                 return -ENODEV;
1520
1521         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1522             __func__));
1523
1524         karg.application_flags = 0;
1525         buffer_type = karg.buffer_type;
1526
1527         if (!_ctl_diag_capability(ioc, buffer_type)) {
1528                 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1529                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1530                 return -EPERM;
1531         }
1532
1533         if ((ioc->diag_buffer_status[buffer_type] &
1534             MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1535                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1536                     "registered\n", ioc->name, __func__, buffer_type);
1537                 return -EINVAL;
1538         }
1539
1540         if (karg.unique_id & 0xffffff00) {
1541                 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1542                         printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1543                             "registered\n", ioc->name, __func__,
1544                             karg.unique_id);
1545                         return -EINVAL;
1546                 }
1547         }
1548
1549         request_data = ioc->diag_buffer[buffer_type];
1550         if (!request_data) {
1551                 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1552                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1553                 return -ENOMEM;
1554         }
1555
1556         if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED)
1557                 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1558                     MPT2_APP_FLAGS_BUFFER_VALID);
1559         else
1560                 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1561                     MPT2_APP_FLAGS_BUFFER_VALID |
1562                     MPT2_APP_FLAGS_FW_BUFFER_ACCESS);
1563
1564         for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1565                 karg.product_specific[i] =
1566                     ioc->product_specific[buffer_type][i];
1567
1568         karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1569         karg.driver_added_buffer_size = 0;
1570         karg.unique_id = ioc->unique_id[buffer_type];
1571         karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1572
1573         if (copy_to_user(arg, &karg, sizeof(struct mpt2_diag_query))) {
1574                 printk(MPT2SAS_ERR_FMT "%s: unable to write mpt2_diag_query "
1575                     "data @ %p\n", ioc->name, __func__, arg);
1576                 return -EFAULT;
1577         }
1578         return 0;
1579 }
1580
1581 /**
1582  * _ctl_send_release - Diag Release Message
1583  * @ioc: per adapter object
1584  * @buffer_type - specifies either TRACE or SNAPSHOT
1585  * @issue_reset - specifies whether host reset is required.
1586  *
1587  */
1588 static int
1589 _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type, u8 *issue_reset)
1590 {
1591         Mpi2DiagReleaseRequest_t *mpi_request;
1592         Mpi2DiagReleaseReply_t *mpi_reply;
1593         u16 smid;
1594         u16 ioc_status;
1595         u32 ioc_state;
1596         int rc;
1597         unsigned long timeleft;
1598
1599         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1600             __func__));
1601
1602         rc = 0;
1603         *issue_reset = 0;
1604
1605         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1606         if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1607                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
1608                     "skipping due to FAULT state\n", ioc->name,
1609                     __func__));
1610                 rc = -EAGAIN;
1611                 goto out;
1612         }
1613
1614         if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1615                 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1616                     ioc->name, __func__);
1617                 rc = -EAGAIN;
1618                 goto out;
1619         }
1620
1621         smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1622         if (!smid) {
1623                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1624                     ioc->name, __func__);
1625                 rc = -EAGAIN;
1626                 goto out;
1627         }
1628
1629         ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1630         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1631         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1632         ioc->ctl_cmds.smid = smid;
1633
1634         mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1635         mpi_request->BufferType = buffer_type;
1636
1637         mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
1638         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1639             MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1640
1641         if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1642                 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1643                     __func__);
1644                 _debug_dump_mf(mpi_request,
1645                     sizeof(Mpi2DiagReleaseRequest_t)/4);
1646                 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1647                         *issue_reset = 1;
1648                 rc = -EFAULT;
1649                 goto out;
1650         }
1651
1652         /* process the completed Reply Message Frame */
1653         if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1654                 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1655                     ioc->name, __func__);
1656                 rc = -EFAULT;
1657                 goto out;
1658         }
1659
1660         mpi_reply = ioc->ctl_cmds.reply;
1661         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1662
1663         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1664                 ioc->diag_buffer_status[buffer_type] |=
1665                     MPT2_DIAG_BUFFER_IS_RELEASED;
1666                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1667                     ioc->name, __func__));
1668         } else {
1669                 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1670                     "log_info(0x%08x)\n", ioc->name, __func__,
1671                     ioc_status, mpi_reply->IOCLogInfo);
1672                 rc = -EFAULT;
1673         }
1674
1675  out:
1676         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1677         return rc;
1678 }
1679
1680 /**
1681  * _ctl_diag_release - request to send Diag Release Message to firmware
1682  * @arg - user space buffer containing ioctl content
1683  * @state - NON_BLOCKING or BLOCKING
1684  *
1685  * This allows ownership of the specified buffer to returned to the driver,
1686  * allowing an application to read the buffer without fear that firmware is
1687  * overwritting information in the buffer.
1688  */
1689 static long
1690 _ctl_diag_release(void __user *arg, enum block_state state)
1691 {
1692         struct mpt2_diag_release karg;
1693         struct MPT2SAS_ADAPTER *ioc;
1694         void *request_data;
1695         int rc;
1696         u8 buffer_type;
1697         u8 issue_reset = 0;
1698
1699         if (copy_from_user(&karg, arg, sizeof(karg))) {
1700                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1701                     __FILE__, __LINE__, __func__);
1702                 return -EFAULT;
1703         }
1704         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1705                 return -ENODEV;
1706
1707         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1708             __func__));
1709
1710         buffer_type = karg.unique_id & 0x000000ff;
1711         if (!_ctl_diag_capability(ioc, buffer_type)) {
1712                 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1713                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1714                 return -EPERM;
1715         }
1716
1717         if ((ioc->diag_buffer_status[buffer_type] &
1718             MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1719                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1720                     "registered\n", ioc->name, __func__, buffer_type);
1721                 return -EINVAL;
1722         }
1723
1724         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1725                 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1726                     "registered\n", ioc->name, __func__, karg.unique_id);
1727                 return -EINVAL;
1728         }
1729
1730         if (ioc->diag_buffer_status[buffer_type] &
1731             MPT2_DIAG_BUFFER_IS_RELEASED) {
1732                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1733                     "is already released\n", ioc->name, __func__,
1734                     buffer_type);
1735                 return 0;
1736         }
1737
1738         request_data = ioc->diag_buffer[buffer_type];
1739
1740         if (!request_data) {
1741                 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1742                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1743                 return -ENOMEM;
1744         }
1745
1746         /* buffers were released by due to host reset */
1747         if ((ioc->diag_buffer_status[buffer_type] &
1748             MPT2_DIAG_BUFFER_IS_DIAG_RESET)) {
1749                 ioc->diag_buffer_status[buffer_type] |=
1750                     MPT2_DIAG_BUFFER_IS_RELEASED;
1751                 ioc->diag_buffer_status[buffer_type] &=
1752                     ~MPT2_DIAG_BUFFER_IS_DIAG_RESET;
1753                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1754                     "was released due to host reset\n", ioc->name, __func__,
1755                     buffer_type);
1756                 return 0;
1757         }
1758
1759         if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1760                 return -EAGAIN;
1761         else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1762                 return -ERESTARTSYS;
1763
1764         rc = _ctl_send_release(ioc, buffer_type, &issue_reset);
1765
1766         if (issue_reset)
1767                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1768                     FORCE_BIG_HAMMER);
1769
1770         mutex_unlock(&ioc->ctl_cmds.mutex);
1771         return rc;
1772 }
1773
1774 /**
1775  * _ctl_diag_read_buffer - request for copy of the diag buffer
1776  * @arg - user space buffer containing ioctl content
1777  * @state - NON_BLOCKING or BLOCKING
1778  */
1779 static long
1780 _ctl_diag_read_buffer(void __user *arg, enum block_state state)
1781 {
1782         struct mpt2_diag_read_buffer karg;
1783         struct mpt2_diag_read_buffer __user *uarg = arg;
1784         struct MPT2SAS_ADAPTER *ioc;
1785         void *request_data, *diag_data;
1786         Mpi2DiagBufferPostRequest_t *mpi_request;
1787         Mpi2DiagBufferPostReply_t *mpi_reply;
1788         int rc, i;
1789         u8 buffer_type;
1790         unsigned long timeleft;
1791         u16 smid;
1792         u16 ioc_status;
1793         u8 issue_reset = 0;
1794
1795         if (copy_from_user(&karg, arg, sizeof(karg))) {
1796                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1797                     __FILE__, __LINE__, __func__);
1798                 return -EFAULT;
1799         }
1800         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1801                 return -ENODEV;
1802
1803         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1804             __func__));
1805
1806         buffer_type = karg.unique_id & 0x000000ff;
1807         if (!_ctl_diag_capability(ioc, buffer_type)) {
1808                 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1809                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1810                 return -EPERM;
1811         }
1812
1813         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1814                 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1815                     "registered\n", ioc->name, __func__, karg.unique_id);
1816                 return -EINVAL;
1817         }
1818
1819         request_data = ioc->diag_buffer[buffer_type];
1820         if (!request_data) {
1821                 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1822                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1823                 return -ENOMEM;
1824         }
1825
1826         if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
1827                 printk(MPT2SAS_ERR_FMT "%s: either the starting_offset "
1828                     "or bytes_to_read are not 4 byte aligned\n", ioc->name,
1829                     __func__);
1830                 return -EINVAL;
1831         }
1832
1833         diag_data = (void *)(request_data + karg.starting_offset);
1834         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: diag_buffer(%p), "
1835             "offset(%d), sz(%d)\n", ioc->name, __func__,
1836             diag_data, karg.starting_offset, karg.bytes_to_read));
1837
1838         if (copy_to_user((void __user *)uarg->diagnostic_data,
1839             diag_data, karg.bytes_to_read)) {
1840                 printk(MPT2SAS_ERR_FMT "%s: Unable to write "
1841                     "mpt_diag_read_buffer_t data @ %p\n", ioc->name,
1842                     __func__, diag_data);
1843                 return -EFAULT;
1844         }
1845
1846         if ((karg.flags & MPT2_FLAGS_REREGISTER) == 0)
1847                 return 0;
1848
1849         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: Reregister "
1850                 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type));
1851         if ((ioc->diag_buffer_status[buffer_type] &
1852             MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1853                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
1854                     "buffer_type(0x%02x) is still registered\n", ioc->name,
1855                      __func__, buffer_type));
1856                 return 0;
1857         }
1858         /* Get a free request frame and save the message context.
1859         */
1860         if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1861                 return -EAGAIN;
1862         else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1863                 return -ERESTARTSYS;
1864
1865         if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1866                 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1867                     ioc->name, __func__);
1868                 rc = -EAGAIN;
1869                 goto out;
1870         }
1871
1872         smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1873         if (!smid) {
1874                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1875                     ioc->name, __func__);
1876                 rc = -EAGAIN;
1877                 goto out;
1878         }
1879
1880         rc = 0;
1881         ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1882         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1883         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1884         ioc->ctl_cmds.smid = smid;
1885
1886         mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1887         mpi_request->BufferType = buffer_type;
1888         mpi_request->BufferLength =
1889             cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
1890         mpi_request->BufferAddress =
1891             cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
1892         for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1893                 mpi_request->ProductSpecific[i] =
1894                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
1895
1896         mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
1897         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1898             MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1899
1900         if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1901                 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1902                     __func__);
1903                 _debug_dump_mf(mpi_request,
1904                     sizeof(Mpi2DiagBufferPostRequest_t)/4);
1905                 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1906                         issue_reset = 1;
1907                 goto issue_host_reset;
1908         }
1909
1910         /* process the completed Reply Message Frame */
1911         if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1912                 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1913                     ioc->name, __func__);
1914                 rc = -EFAULT;
1915                 goto out;
1916         }
1917
1918         mpi_reply = ioc->ctl_cmds.reply;
1919         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1920
1921         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1922                 ioc->diag_buffer_status[buffer_type] |=
1923                     MPT2_DIAG_BUFFER_IS_REGISTERED;
1924                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1925                     ioc->name, __func__));
1926         } else {
1927                 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1928                     "log_info(0x%08x)\n", ioc->name, __func__,
1929                     ioc_status, mpi_reply->IOCLogInfo);
1930                 rc = -EFAULT;
1931         }
1932
1933  issue_host_reset:
1934         if (issue_reset)
1935                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1936                     FORCE_BIG_HAMMER);
1937
1938  out:
1939
1940         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1941         mutex_unlock(&ioc->ctl_cmds.mutex);
1942         return rc;
1943 }
1944
1945 /**
1946  * _ctl_ioctl_main - main ioctl entry point
1947  * @file - (struct file)
1948  * @cmd - ioctl opcode
1949  * @arg -
1950  */
1951 static long
1952 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg)
1953 {
1954         enum block_state state;
1955         long ret = -EINVAL;
1956         unsigned long flags;
1957
1958         state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING :
1959             BLOCKING;
1960
1961         switch (cmd) {
1962         case MPT2IOCINFO:
1963                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_iocinfo))
1964                         ret = _ctl_getiocinfo(arg);
1965                 break;
1966         case MPT2COMMAND:
1967         {
1968                 struct mpt2_ioctl_command karg;
1969                 struct mpt2_ioctl_command __user *uarg;
1970                 struct MPT2SAS_ADAPTER *ioc;
1971
1972                 if (copy_from_user(&karg, arg, sizeof(karg))) {
1973                         printk(KERN_ERR "failure at %s:%d/%s()!\n",
1974                             __FILE__, __LINE__, __func__);
1975                         return -EFAULT;
1976                 }
1977
1978                 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
1979                     !ioc)
1980                         return -ENODEV;
1981
1982                 spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
1983                 if (ioc->shost_recovery) {
1984                         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock,
1985                             flags);
1986                         return -EAGAIN;
1987                 }
1988                 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
1989
1990                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) {
1991                         uarg = arg;
1992                         ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
1993                 }
1994                 break;
1995         }
1996         case MPT2EVENTQUERY:
1997                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventquery))
1998                         ret = _ctl_eventquery(arg);
1999                 break;
2000         case MPT2EVENTENABLE:
2001                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventenable))
2002                         ret = _ctl_eventenable(arg);
2003                 break;
2004         case MPT2EVENTREPORT:
2005                 ret = _ctl_eventreport(arg);
2006                 break;
2007         case MPT2HARDRESET:
2008                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_diag_reset))
2009                         ret = _ctl_do_reset(arg);
2010                 break;
2011         case MPT2BTDHMAPPING:
2012                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_btdh_mapping))
2013                         ret = _ctl_btdh_mapping(arg);
2014                 break;
2015         case MPT2DIAGREGISTER:
2016                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_register))
2017                         ret = _ctl_diag_register(arg, state);
2018                 break;
2019         case MPT2DIAGUNREGISTER:
2020                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_unregister))
2021                         ret = _ctl_diag_unregister(arg);
2022                 break;
2023         case MPT2DIAGQUERY:
2024                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_query))
2025                         ret = _ctl_diag_query(arg);
2026                 break;
2027         case MPT2DIAGRELEASE:
2028                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_release))
2029                         ret = _ctl_diag_release(arg, state);
2030                 break;
2031         case MPT2DIAGREADBUFFER:
2032                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_read_buffer))
2033                         ret = _ctl_diag_read_buffer(arg, state);
2034                 break;
2035         default:
2036         {
2037                 struct mpt2_ioctl_command karg;
2038                 struct MPT2SAS_ADAPTER *ioc;
2039
2040                 if (copy_from_user(&karg, arg, sizeof(karg))) {
2041                         printk(KERN_ERR "failure at %s:%d/%s()!\n",
2042                             __FILE__, __LINE__, __func__);
2043                         return -EFAULT;
2044                 }
2045
2046                 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2047                     !ioc)
2048                         return -ENODEV;
2049
2050                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT
2051                     "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
2052                 break;
2053         }
2054         }
2055         return ret;
2056 }
2057
2058 /**
2059  * _ctl_ioctl - main ioctl entry point (unlocked)
2060  * @file - (struct file)
2061  * @cmd - ioctl opcode
2062  * @arg -
2063  */
2064 static long
2065 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2066 {
2067         long ret;
2068         lock_kernel();
2069         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2070         unlock_kernel();
2071         return ret;
2072 }
2073
2074 #ifdef CONFIG_COMPAT
2075 /**
2076  * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2077  * @file - (struct file)
2078  * @cmd - ioctl opcode
2079  * @arg - (struct mpt2_ioctl_command32)
2080  *
2081  * MPT2COMMAND32 - Handle 32bit applications running on 64bit os.
2082  */
2083 static long
2084 _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg)
2085 {
2086         struct mpt2_ioctl_command32 karg32;
2087         struct mpt2_ioctl_command32 __user *uarg;
2088         struct mpt2_ioctl_command karg;
2089         struct MPT2SAS_ADAPTER *ioc;
2090         enum block_state state;
2091         unsigned long flags;
2092
2093         if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32))
2094                 return -EINVAL;
2095
2096         uarg = (struct mpt2_ioctl_command32 __user *) arg;
2097
2098         if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2099                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2100                     __FILE__, __LINE__, __func__);
2101                 return -EFAULT;
2102         }
2103         if (_ctl_verify_adapter(karg32.hdr.ioc_number, &ioc) == -1 || !ioc)
2104                 return -ENODEV;
2105
2106         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
2107         if (ioc->shost_recovery) {
2108                 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock,
2109                     flags);
2110                 return -EAGAIN;
2111         }
2112         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
2113
2114         memset(&karg, 0, sizeof(struct mpt2_ioctl_command));
2115         karg.hdr.ioc_number = karg32.hdr.ioc_number;
2116         karg.hdr.port_number = karg32.hdr.port_number;
2117         karg.hdr.max_data_size = karg32.hdr.max_data_size;
2118         karg.timeout = karg32.timeout;
2119         karg.max_reply_bytes = karg32.max_reply_bytes;
2120         karg.data_in_size = karg32.data_in_size;
2121         karg.data_out_size = karg32.data_out_size;
2122         karg.max_sense_bytes = karg32.max_sense_bytes;
2123         karg.data_sge_offset = karg32.data_sge_offset;
2124         memcpy(&karg.reply_frame_buf_ptr, &karg32.reply_frame_buf_ptr,
2125             sizeof(uint32_t));
2126         memcpy(&karg.data_in_buf_ptr, &karg32.data_in_buf_ptr,
2127             sizeof(uint32_t));
2128         memcpy(&karg.data_out_buf_ptr, &karg32.data_out_buf_ptr,
2129             sizeof(uint32_t));
2130         memcpy(&karg.sense_data_ptr, &karg32.sense_data_ptr,
2131             sizeof(uint32_t));
2132         state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2133         return _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2134 }
2135
2136 /**
2137  * _ctl_ioctl_compat - main ioctl entry point (compat)
2138  * @file -
2139  * @cmd -
2140  * @arg -
2141  *
2142  * This routine handles 32 bit applications in 64bit os.
2143  */
2144 static long
2145 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2146 {
2147         long ret;
2148         lock_kernel();
2149         if (cmd == MPT2COMMAND32)
2150                 ret = _ctl_compat_mpt_command(file, cmd, arg);
2151         else
2152                 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2153         unlock_kernel();
2154         return ret;
2155 }
2156 #endif
2157
2158 /* scsi host attributes */
2159
2160 /**
2161  * _ctl_version_fw_show - firmware version
2162  * @cdev - pointer to embedded class device
2163  * @buf - the buffer returned
2164  *
2165  * A sysfs 'read-only' shost attribute.
2166  */
2167 static ssize_t
2168 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2169     char *buf)
2170 {
2171         struct Scsi_Host *shost = class_to_shost(cdev);
2172         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2173
2174         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2175             (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2176             (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2177             (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2178             ioc->facts.FWVersion.Word & 0x000000FF);
2179 }
2180 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2181
2182 /**
2183  * _ctl_version_bios_show - bios version
2184  * @cdev - pointer to embedded class device
2185  * @buf - the buffer returned
2186  *
2187  * A sysfs 'read-only' shost attribute.
2188  */
2189 static ssize_t
2190 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2191     char *buf)
2192 {
2193         struct Scsi_Host *shost = class_to_shost(cdev);
2194         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2195
2196         u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2197
2198         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2199             (version & 0xFF000000) >> 24,
2200             (version & 0x00FF0000) >> 16,
2201             (version & 0x0000FF00) >> 8,
2202             version & 0x000000FF);
2203 }
2204 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2205
2206 /**
2207  * _ctl_version_mpi_show - MPI (message passing interface) version
2208  * @cdev - pointer to embedded class device
2209  * @buf - the buffer returned
2210  *
2211  * A sysfs 'read-only' shost attribute.
2212  */
2213 static ssize_t
2214 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2215     char *buf)
2216 {
2217         struct Scsi_Host *shost = class_to_shost(cdev);
2218         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2219
2220         return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2221             ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2222 }
2223 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2224
2225 /**
2226  * _ctl_version_product_show - product name
2227  * @cdev - pointer to embedded class device
2228  * @buf - the buffer returned
2229  *
2230  * A sysfs 'read-only' shost attribute.
2231  */
2232 static ssize_t
2233 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2234     char *buf)
2235 {
2236         struct Scsi_Host *shost = class_to_shost(cdev);
2237         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2238
2239         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2240 }
2241 static DEVICE_ATTR(version_product, S_IRUGO,
2242    _ctl_version_product_show, NULL);
2243
2244 /**
2245  * _ctl_version_nvdata_persistent_show - ndvata persistent version
2246  * @cdev - pointer to embedded class device
2247  * @buf - the buffer returned
2248  *
2249  * A sysfs 'read-only' shost attribute.
2250  */
2251 static ssize_t
2252 _ctl_version_nvdata_persistent_show(struct device *cdev,
2253     struct device_attribute *attr, char *buf)
2254 {
2255         struct Scsi_Host *shost = class_to_shost(cdev);
2256         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2257
2258         return snprintf(buf, PAGE_SIZE, "%02xh\n",
2259             le16_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2260 }
2261 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2262     _ctl_version_nvdata_persistent_show, NULL);
2263
2264 /**
2265  * _ctl_version_nvdata_default_show - nvdata default version
2266  * @cdev - pointer to embedded class device
2267  * @buf - the buffer returned
2268  *
2269  * A sysfs 'read-only' shost attribute.
2270  */
2271 static ssize_t
2272 _ctl_version_nvdata_default_show(struct device *cdev,
2273     struct device_attribute *attr, char *buf)
2274 {
2275         struct Scsi_Host *shost = class_to_shost(cdev);
2276         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2277
2278         return snprintf(buf, PAGE_SIZE, "%02xh\n",
2279             le16_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2280 }
2281 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2282     _ctl_version_nvdata_default_show, NULL);
2283
2284 /**
2285  * _ctl_board_name_show - board name
2286  * @cdev - pointer to embedded class device
2287  * @buf - the buffer returned
2288  *
2289  * A sysfs 'read-only' shost attribute.
2290  */
2291 static ssize_t
2292 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2293     char *buf)
2294 {
2295         struct Scsi_Host *shost = class_to_shost(cdev);
2296         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2297
2298         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2299 }
2300 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2301
2302 /**
2303  * _ctl_board_assembly_show - board assembly name
2304  * @cdev - pointer to embedded class device
2305  * @buf - the buffer returned
2306  *
2307  * A sysfs 'read-only' shost attribute.
2308  */
2309 static ssize_t
2310 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2311     char *buf)
2312 {
2313         struct Scsi_Host *shost = class_to_shost(cdev);
2314         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2315
2316         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2317 }
2318 static DEVICE_ATTR(board_assembly, S_IRUGO,
2319     _ctl_board_assembly_show, NULL);
2320
2321 /**
2322  * _ctl_board_tracer_show - board tracer number
2323  * @cdev - pointer to embedded class device
2324  * @buf - the buffer returned
2325  *
2326  * A sysfs 'read-only' shost attribute.
2327  */
2328 static ssize_t
2329 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2330     char *buf)
2331 {
2332         struct Scsi_Host *shost = class_to_shost(cdev);
2333         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2334
2335         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2336 }
2337 static DEVICE_ATTR(board_tracer, S_IRUGO,
2338     _ctl_board_tracer_show, NULL);
2339
2340 /**
2341  * _ctl_io_delay_show - io missing delay
2342  * @cdev - pointer to embedded class device
2343  * @buf - the buffer returned
2344  *
2345  * This is for firmware implemention for deboucing device
2346  * removal events.
2347  *
2348  * A sysfs 'read-only' shost attribute.
2349  */
2350 static ssize_t
2351 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2352     char *buf)
2353 {
2354         struct Scsi_Host *shost = class_to_shost(cdev);
2355         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2356
2357         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2358 }
2359 static DEVICE_ATTR(io_delay, S_IRUGO,
2360     _ctl_io_delay_show, NULL);
2361
2362 /**
2363  * _ctl_device_delay_show - device missing delay
2364  * @cdev - pointer to embedded class device
2365  * @buf - the buffer returned
2366  *
2367  * This is for firmware implemention for deboucing device
2368  * removal events.
2369  *
2370  * A sysfs 'read-only' shost attribute.
2371  */
2372 static ssize_t
2373 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2374     char *buf)
2375 {
2376         struct Scsi_Host *shost = class_to_shost(cdev);
2377         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2378
2379         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2380 }
2381 static DEVICE_ATTR(device_delay, S_IRUGO,
2382     _ctl_device_delay_show, NULL);
2383
2384 /**
2385  * _ctl_fw_queue_depth_show - global credits
2386  * @cdev - pointer to embedded class device
2387  * @buf - the buffer returned
2388  *
2389  * This is firmware queue depth limit
2390  *
2391  * A sysfs 'read-only' shost attribute.
2392  */
2393 static ssize_t
2394 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2395     char *buf)
2396 {
2397         struct Scsi_Host *shost = class_to_shost(cdev);
2398         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2399
2400         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2401 }
2402 static DEVICE_ATTR(fw_queue_depth, S_IRUGO,
2403     _ctl_fw_queue_depth_show, NULL);
2404
2405 /**
2406  * _ctl_sas_address_show - sas address
2407  * @cdev - pointer to embedded class device
2408  * @buf - the buffer returned
2409  *
2410  * This is the controller sas address
2411  *
2412  * A sysfs 'read-only' shost attribute.
2413  */
2414 static ssize_t
2415 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2416     char *buf)
2417 {
2418         struct Scsi_Host *shost = class_to_shost(cdev);
2419         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2420
2421         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2422             (unsigned long long)ioc->sas_hba.sas_address);
2423 }
2424 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2425     _ctl_host_sas_address_show, NULL);
2426
2427 /**
2428  * _ctl_logging_level_show - logging level
2429  * @cdev - pointer to embedded class device
2430  * @buf - the buffer returned
2431  *
2432  * A sysfs 'read/write' shost attribute.
2433  */
2434 static ssize_t
2435 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2436     char *buf)
2437 {
2438         struct Scsi_Host *shost = class_to_shost(cdev);
2439         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2440
2441         return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2442 }
2443 static ssize_t
2444 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2445     const char *buf, size_t count)
2446 {
2447         struct Scsi_Host *shost = class_to_shost(cdev);
2448         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2449         int val = 0;
2450
2451         if (sscanf(buf, "%x", &val) != 1)
2452                 return -EINVAL;
2453
2454         ioc->logging_level = val;
2455         printk(MPT2SAS_INFO_FMT "logging_level=%08xh\n", ioc->name,
2456             ioc->logging_level);
2457         return strlen(buf);
2458 }
2459 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
2460     _ctl_logging_level_show, _ctl_logging_level_store);
2461
2462 struct device_attribute *mpt2sas_host_attrs[] = {
2463         &dev_attr_version_fw,
2464         &dev_attr_version_bios,
2465         &dev_attr_version_mpi,
2466         &dev_attr_version_product,
2467         &dev_attr_version_nvdata_persistent,
2468         &dev_attr_version_nvdata_default,
2469         &dev_attr_board_name,
2470         &dev_attr_board_assembly,
2471         &dev_attr_board_tracer,
2472         &dev_attr_io_delay,
2473         &dev_attr_device_delay,
2474         &dev_attr_logging_level,
2475         &dev_attr_fw_queue_depth,
2476         &dev_attr_host_sas_address,
2477         NULL,
2478 };
2479
2480 /* device attributes */
2481
2482 /**
2483  * _ctl_device_sas_address_show - sas address
2484  * @cdev - pointer to embedded class device
2485  * @buf - the buffer returned
2486  *
2487  * This is the sas address for the target
2488  *
2489  * A sysfs 'read-only' shost attribute.
2490  */
2491 static ssize_t
2492 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
2493     char *buf)
2494 {
2495         struct scsi_device *sdev = to_scsi_device(dev);
2496         struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2497
2498         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2499             (unsigned long long)sas_device_priv_data->sas_target->sas_address);
2500 }
2501 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
2502
2503 /**
2504  * _ctl_device_handle_show - device handle
2505  * @cdev - pointer to embedded class device
2506  * @buf - the buffer returned
2507  *
2508  * This is the firmware assigned device handle
2509  *
2510  * A sysfs 'read-only' shost attribute.
2511  */
2512 static ssize_t
2513 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
2514     char *buf)
2515 {
2516         struct scsi_device *sdev = to_scsi_device(dev);
2517         struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2518
2519         return snprintf(buf, PAGE_SIZE, "0x%04x\n",
2520             sas_device_priv_data->sas_target->handle);
2521 }
2522 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
2523
2524 struct device_attribute *mpt2sas_dev_attrs[] = {
2525         &dev_attr_sas_address,
2526         &dev_attr_sas_device_handle,
2527         NULL,
2528 };
2529
2530 static const struct file_operations ctl_fops = {
2531         .owner = THIS_MODULE,
2532         .unlocked_ioctl = _ctl_ioctl,
2533         .release = _ctl_release,
2534         .poll = _ctl_poll,
2535         .fasync = _ctl_fasync,
2536 #ifdef CONFIG_COMPAT
2537         .compat_ioctl = _ctl_ioctl_compat,
2538 #endif
2539 };
2540
2541 static struct miscdevice ctl_dev = {
2542         .minor  = MPT2SAS_MINOR,
2543         .name   = MPT2SAS_DEV_NAME,
2544         .fops   = &ctl_fops,
2545 };
2546
2547 /**
2548  * mpt2sas_ctl_init - main entry point for ctl.
2549  *
2550  */
2551 void
2552 mpt2sas_ctl_init(void)
2553 {
2554         async_queue = NULL;
2555         if (misc_register(&ctl_dev) < 0)
2556                 printk(KERN_ERR "%s can't register misc device [minor=%d]\n",
2557                     MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
2558
2559         init_waitqueue_head(&ctl_poll_wait);
2560 }
2561
2562 /**
2563  * mpt2sas_ctl_exit - exit point for ctl
2564  *
2565  */
2566 void
2567 mpt2sas_ctl_exit(void)
2568 {
2569         struct MPT2SAS_ADAPTER *ioc;
2570         int i;
2571
2572         list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
2573
2574                 /* free memory associated to diag buffers */
2575                 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
2576                         if (!ioc->diag_buffer[i])
2577                                 continue;
2578                         pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
2579                             ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
2580                         ioc->diag_buffer[i] = NULL;
2581                         ioc->diag_buffer_status[i] = 0;
2582                 }
2583
2584                 kfree(ioc->event_log);
2585         }
2586         misc_deregister(&ctl_dev);
2587 }
2588