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 /**
  68  * enum block_state - blocking state
  69  * @NON_BLOCKING: non blocking
  70  * @BLOCKING: blocking
  71  *
  72  * These states are for ioctls that need to wait for a response
  73  * from firmware, so they probably require sleep.
  74  */
  75 enum block_state {
  76         NON_BLOCKING,
  77         BLOCKING,
  78 };
  79
  80 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
  81 /**
  82  * _ctl_display_some_debug - debug routine
  83  * @ioc: per adapter object
  84  * @smid: system request message index
  85  * @calling_function_name: string pass from calling function
  86  * @mpi_reply: reply message frame
  87  * Context: none.
  88  *
  89  * Function for displaying debug info helpfull when debugging issues
  90  * in this module.
  91  */
  92 static void
  93 _ctl_display_some_debug(struct MPT2SAS_ADAPTER *ioc, u16 smid,
  94     char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
  95 {
  96         Mpi2ConfigRequest_t *mpi_request;
  97         char *desc = NULL;
  98
  99         if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
 100                 return;
 101
 102         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
 103         switch (mpi_request->Function) {
 104         case MPI2_FUNCTION_SCSI_IO_REQUEST:
 105         {
 106                 Mpi2SCSIIORequest_t *scsi_request =
 107                     (Mpi2SCSIIORequest_t *)mpi_request;
 108
 109                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 110                     "scsi_io, cmd(0x%02x), cdb_len(%d)",
 111                     scsi_request->CDB.CDB32[0],
 112                     le16_to_cpu(scsi_request->IoFlags) & 0xF);
 113                 desc = ioc->tmp_string;
 114                 break;
 115         }
 116         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 117                 desc = "task_mgmt";
 118                 break;
 119         case MPI2_FUNCTION_IOC_INIT:
 120                 desc = "ioc_init";
 121                 break;
 122         case MPI2_FUNCTION_IOC_FACTS:
 123                 desc = "ioc_facts";
 124                 break;
 125         case MPI2_FUNCTION_CONFIG:
 126         {
 127                 Mpi2ConfigRequest_t *config_request =
 128                     (Mpi2ConfigRequest_t *)mpi_request;
 129
 130                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 131                     "config, type(0x%02x), ext_type(0x%02x), number(%d)",
 132                     (config_request->Header.PageType &
 133                      MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
 134                     config_request->Header.PageNumber);
 135                 desc = ioc->tmp_string;
 136                 break;
 137         }
 138         case MPI2_FUNCTION_PORT_FACTS:
 139                 desc = "port_facts";
 140                 break;
 141         case MPI2_FUNCTION_PORT_ENABLE:
 142                 desc = "port_enable";
 143                 break;
 144         case MPI2_FUNCTION_EVENT_NOTIFICATION:
 145                 desc = "event_notification";
 146                 break;
 147         case MPI2_FUNCTION_FW_DOWNLOAD:
 148                 desc = "fw_download";
 149                 break;
 150         case MPI2_FUNCTION_FW_UPLOAD:
 151                 desc = "fw_upload";
 152                 break;
 153         case MPI2_FUNCTION_RAID_ACTION:
 154                 desc = "raid_action";
 155                 break;
 156         case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
 157         {
 158                 Mpi2SCSIIORequest_t *scsi_request =
 159                     (Mpi2SCSIIORequest_t *)mpi_request;
 160
 161                 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
 162                     "raid_pass, cmd(0x%02x), cdb_len(%d)",
 163                     scsi_request->CDB.CDB32[0],
 164                     le16_to_cpu(scsi_request->IoFlags) & 0xF);
 165                 desc = ioc->tmp_string;
 166                 break;
 167         }
 168         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 169                 desc = "sas_iounit_cntl";
 170                 break;
 171         case MPI2_FUNCTION_SATA_PASSTHROUGH:
 172                 desc = "sata_pass";
 173                 break;
 174         case MPI2_FUNCTION_DIAG_BUFFER_POST:
 175                 desc = "diag_buffer_post";
 176                 break;
 177         case MPI2_FUNCTION_DIAG_RELEASE:
 178                 desc = "diag_release";
 179                 break;
 180         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 181                 desc = "smp_passthrough";
 182                 break;
 183         }
 184
 185         if (!desc)
 186                 return;
 187
 188         printk(MPT2SAS_DEBUG_FMT "%s: %s, smid(%d)\n",
 189             ioc->name, calling_function_name, desc, smid);
 190
 191         if (!mpi_reply)
 192                 return;
 193
 194         if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
 195                 printk(MPT2SAS_DEBUG_FMT
 196                     "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
 197                     ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
 198                     le32_to_cpu(mpi_reply->IOCLogInfo));
 199
 200         if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 201             mpi_request->Function ==
 202             MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 203                 Mpi2SCSIIOReply_t *scsi_reply =
 204                     (Mpi2SCSIIOReply_t *)mpi_reply;
 205                 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
 206                         printk(MPT2SAS_DEBUG_FMT
 207                             "\tscsi_state(0x%02x), scsi_status"
 208                             "(0x%02x)\n", ioc->name,
 209                             scsi_reply->SCSIState,
 210                             scsi_reply->SCSIStatus);
 211         }
 212 }
 213 #endif
 214
 215 /**
 216  * mpt2sas_ctl_done - ctl module completion routine
 217  * @ioc: per adapter object
 218  * @smid: system request message index
 219  * @VF_ID: virtual function id
 220  * @reply: reply message frame(lower 32bit addr)
 221  * Context: none.
 222  *
 223  * The callback handler when using ioc->ctl_cb_idx.
 224  *
 225  * Return nothing.
 226  */
 227 void
 228 mpt2sas_ctl_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply)
 229 {
 230         MPI2DefaultReply_t *mpi_reply;
 231
 232         if (ioc->ctl_cmds.status == MPT2_CMD_NOT_USED)
 233                 return;
 234         if (ioc->ctl_cmds.smid != smid)
 235                 return;
 236         ioc->ctl_cmds.status |= MPT2_CMD_COMPLETE;
 237         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 238         if (mpi_reply) {
 239                 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 240                 ioc->ctl_cmds.status |= MPT2_CMD_REPLY_VALID;
 241         }
 242 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 243         _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
 244 #endif
 245         ioc->ctl_cmds.status &= ~MPT2_CMD_PENDING;
 246         complete(&ioc->ctl_cmds.done);
 247 }
 248
 249 /**
 250  * _ctl_check_event_type - determines when an event needs logging
 251  * @ioc: per adapter object
 252  * @event: firmware event
 253  *
 254  * The bitmask in ioc->event_type[] indicates which events should be
 255  * be saved in the driver event_log.  This bitmask is set by application.
 256  *
 257  * Returns 1 when event should be captured, or zero means no match.
 258  */
 259 static int
 260 _ctl_check_event_type(struct MPT2SAS_ADAPTER *ioc, u16 event)
 261 {
 262         u16 i;
 263         u32 desired_event;
 264
 265         if (event >= 128 || !event || !ioc->event_log)
 266                 return 0;
 267
 268         desired_event = (1 << (event % 32));
 269         if (!desired_event)
 270                 desired_event = 1;
 271         i = event / 32;
 272         return desired_event & ioc->event_type[i];
 273 }
 274
 275 /**
 276  * mpt2sas_ctl_add_to_event_log - add event
 277  * @ioc: per adapter object
 278  * @mpi_reply: reply message frame
 279  *
 280  * Return nothing.
 281  */
 282 void
 283 mpt2sas_ctl_add_to_event_log(struct MPT2SAS_ADAPTER *ioc,
 284     Mpi2EventNotificationReply_t *mpi_reply)
 285 {
 286         struct MPT2_IOCTL_EVENTS *event_log;
 287         u16 event;
 288         int i;
 289         u32 sz, event_data_sz;
 290         u8 send_aen = 0;
 291
 292         if (!ioc->event_log)
 293                 return;
 294
 295         event = le16_to_cpu(mpi_reply->Event);
 296
 297         if (_ctl_check_event_type(ioc, event)) {
 298
 299                 /* insert entry into circular event_log */
 300                 i = ioc->event_context % MPT2SAS_CTL_EVENT_LOG_SIZE;
 301                 event_log = ioc->event_log;
 302                 event_log[i].event = event;
 303                 event_log[i].context = ioc->event_context++;
 304
 305                 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
 306                 sz = min_t(u32, event_data_sz, MPT2_EVENT_DATA_SIZE);
 307                 memset(event_log[i].data, 0, MPT2_EVENT_DATA_SIZE);
 308                 memcpy(event_log[i].data, mpi_reply->EventData, sz);
 309                 send_aen = 1;
 310         }
 311
 312         /* This aen_event_read_flag flag is set until the
 313          * application has read the event log.
 314          * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
 315          */
 316         if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
 317             (send_aen && !ioc->aen_event_read_flag)) {
 318                 ioc->aen_event_read_flag = 1;
 319                 wake_up_interruptible(&ctl_poll_wait);
 320                 if (async_queue)
 321                         kill_fasync(&async_queue, SIGIO, POLL_IN);
 322         }
 323 }
 324
 325 /**
 326  * mpt2sas_ctl_event_callback - firmware event handler (called at ISR time)
 327  * @ioc: per adapter object
 328  * @VF_ID: virtual function id
 329  * @reply: reply message frame(lower 32bit addr)
 330  * Context: interrupt.
 331  *
 332  * This function merely adds a new work task into ioc->firmware_event_thread.
 333  * The tasks are worked from _firmware_event_work in user context.
 334  *
 335  * Return nothing.
 336  */
 337 void
 338 mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, u32 reply)
 339 {
 340         Mpi2EventNotificationReply_t *mpi_reply;
 341
 342         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 343         mpt2sas_ctl_add_to_event_log(ioc, mpi_reply);
 344 }
 345
 346 /**
 347  * _ctl_verify_adapter - validates ioc_number passed from application
 348  * @ioc: per adapter object
 349  * @iocpp: The ioc pointer is returned in this.
 350  *
 351  * Return (-1) means error, else ioc_number.
 352  */
 353 static int
 354 _ctl_verify_adapter(int ioc_number, struct MPT2SAS_ADAPTER **iocpp)
 355 {
 356         struct MPT2SAS_ADAPTER *ioc;
 357
 358         list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
 359                 if (ioc->id != ioc_number)
 360                         continue;
 361                 *iocpp = ioc;
 362                 return ioc_number;
 363         }
 364         *iocpp = NULL;
 365         return -1;
 366 }
 367
 368 /**
 369  * mpt2sas_ctl_reset_handler - reset callback handler (for ctl)
 370  * @ioc: per adapter object
 371  * @reset_phase: phase
 372  *
 373  * The handler for doing any required cleanup or initialization.
 374  *
 375  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
 376  * MPT2_IOC_DONE_RESET
 377  */
 378 void
 379 mpt2sas_ctl_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
 380 {
 381         switch (reset_phase) {
 382         case MPT2_IOC_PRE_RESET:
 383                 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
 384                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
 385                 break;
 386         case MPT2_IOC_AFTER_RESET:
 387                 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
 388                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
 389                 if (ioc->ctl_cmds.status & MPT2_CMD_PENDING) {
 390                         ioc->ctl_cmds.status |= MPT2_CMD_RESET;
 391                         mpt2sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
 392                         complete(&ioc->ctl_cmds.done);
 393                 }
 394                 break;
 395         case MPT2_IOC_DONE_RESET:
 396                 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
 397                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
 398                 break;
 399         }
 400 }
 401
 402 /**
 403  * _ctl_fasync -
 404  * @fd -
 405  * @filep -
 406  * @mode -
 407  *
 408  * Called when application request fasyn callback handler.
 409  */
 410 static int
 411 _ctl_fasync(int fd, struct file *filep, int mode)
 412 {
 413         return fasync_helper(fd, filep, mode, &async_queue);
 414 }
 415
 416 /**
 417  * _ctl_release -
 418  * @inode -
 419  * @filep -
 420  *
 421  * Called when application releases the fasyn callback handler.
 422  */
 423 static int
 424 _ctl_release(struct inode *inode, struct file *filep)
 425 {
 426         return fasync_helper(-1, filep, 0, &async_queue);
 427 }
 428
 429 /**
 430  * _ctl_poll -
 431  * @file -
 432  * @wait -
 433  *
 434  */
 435 static unsigned int
 436 _ctl_poll(struct file *filep, poll_table *wait)
 437 {
 438         struct MPT2SAS_ADAPTER *ioc;
 439
 440         poll_wait(filep, &ctl_poll_wait, wait);
 441
 442         list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
 443                 if (ioc->aen_event_read_flag)
 444                         return POLLIN | POLLRDNORM;
 445         }
 446         return 0;
 447 }
 448
 449 /**
 450  * _ctl_do_task_abort - assign an active smid to the abort_task
 451  * @ioc: per adapter object
 452  * @karg - (struct mpt2_ioctl_command)
 453  * @tm_request - pointer to mf from user space
 454  *
 455  * Returns 0 when an smid if found, else fail.
 456  * during failure, the reply frame is filled.
 457  */
 458 static int
 459 _ctl_do_task_abort(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command *karg,
 460     Mpi2SCSITaskManagementRequest_t *tm_request)
 461 {
 462         u8 found = 0;
 463         u16 i;
 464         u16 handle;
 465         struct scsi_cmnd *scmd;
 466         struct MPT2SAS_DEVICE *priv_data;
 467         unsigned long flags;
 468         Mpi2SCSITaskManagementReply_t *tm_reply;
 469         u32 sz;
 470         u32 lun;
 471
 472         lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
 473
 474         handle = le16_to_cpu(tm_request->DevHandle);
 475         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
 476         for (i = ioc->request_depth; i && !found; i--) {
 477                 scmd = ioc->scsi_lookup[i - 1].scmd;
 478                 if (scmd == NULL || scmd->device == NULL ||
 479                     scmd->device->hostdata == NULL)
 480                         continue;
 481                 if (lun != scmd->device->lun)
 482                         continue;
 483                 priv_data = scmd->device->hostdata;
 484                 if (priv_data->sas_target == NULL)
 485                         continue;
 486                 if (priv_data->sas_target->handle != handle)
 487                         continue;
 488                 tm_request->TaskMID = cpu_to_le16(ioc->scsi_lookup[i - 1].smid);
 489                 found = 1;
 490         }
 491         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
 492
 493         if (!found) {
 494                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "ABORT_TASK: "
 495                     "DevHandle(0x%04x), lun(%d), no active mid!!\n", ioc->name,
 496                     tm_request->DevHandle, lun));
 497                 tm_reply = ioc->ctl_cmds.reply;
 498                 tm_reply->DevHandle = tm_request->DevHandle;
 499                 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
 500                 tm_reply->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK;
 501                 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
 502                 tm_reply->VP_ID = tm_request->VP_ID;
 503                 tm_reply->VF_ID = tm_request->VF_ID;
 504                 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
 505                 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
 506                     sz))
 507                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 508                             __LINE__, __func__);
 509                 return 1;
 510         }
 511
 512         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "ABORT_TASK: "
 513             "DevHandle(0x%04x), lun(%d), smid(%d)\n", ioc->name,
 514             tm_request->DevHandle, lun, tm_request->TaskMID));
 515         return 0;
 516 }
 517
 518 /**
 519  * _ctl_do_mpt_command - main handler for MPT2COMMAND opcode
 520  * @ioc: per adapter object
 521  * @karg - (struct mpt2_ioctl_command)
 522  * @mf - pointer to mf in user space
 523  * @state - NON_BLOCKING or BLOCKING
 524  */
 525 static long
 526 _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc,
 527     struct mpt2_ioctl_command karg, void __user *mf, enum block_state state)
 528 {
 529         MPI2RequestHeader_t *mpi_request;
 530         MPI2DefaultReply_t *mpi_reply;
 531         u32 ioc_state;
 532         u16 ioc_status;
 533         u16 smid;
 534         unsigned long timeout, timeleft;
 535         u8 issue_reset;
 536         u32 sz;
 537         void *psge;
 538         void *priv_sense = NULL;
 539         void *data_out = NULL;
 540         dma_addr_t data_out_dma;
 541         size_t data_out_sz = 0;
 542         void *data_in = NULL;
 543         dma_addr_t data_in_dma;
 544         size_t data_in_sz = 0;
 545         u32 sgl_flags;
 546         long ret;
 547         u16 wait_state_count;
 548
 549         issue_reset = 0;
 550
 551         if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
 552                 return -EAGAIN;
 553         else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
 554                 return -ERESTARTSYS;
 555
 556         if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
 557                 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
 558                     ioc->name, __func__);
 559                 ret = -EAGAIN;
 560                 goto out;
 561         }
 562
 563         wait_state_count = 0;
 564         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
 565         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
 566                 if (wait_state_count++ == 10) {
 567                         printk(MPT2SAS_ERR_FMT
 568                             "%s: failed due to ioc not operational\n",
 569                             ioc->name, __func__);
 570                         ret = -EFAULT;
 571                         goto out;
 572                 }
 573                 ssleep(1);
 574                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
 575                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
 576                     "operational state(count=%d)\n", ioc->name,
 577                     __func__, wait_state_count);
 578         }
 579         if (wait_state_count)
 580                 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
 581                     ioc->name, __func__);
 582
 583         smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
 584         if (!smid) {
 585                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
 586                     ioc->name, __func__);
 587                 ret = -EAGAIN;
 588                 goto out;
 589         }
 590
 591         ret = 0;
 592         ioc->ctl_cmds.status = MPT2_CMD_PENDING;
 593         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
 594         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
 595         ioc->ctl_cmds.smid = smid;
 596         data_out_sz = karg.data_out_size;
 597         data_in_sz = karg.data_in_size;
 598
 599         /* copy in request message frame from user */
 600         if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
 601                 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__,
 602                     __func__);
 603                 ret = -EFAULT;
 604                 mpt2sas_base_free_smid(ioc, smid);
 605                 goto out;
 606         }
 607
 608         if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 609             mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
 610                 if (!mpi_request->FunctionDependent1 ||
 611                     mpi_request->FunctionDependent1 >
 612                     cpu_to_le16(ioc->facts.MaxDevHandle)) {
 613                         ret = -EINVAL;
 614                         mpt2sas_base_free_smid(ioc, smid);
 615                         goto out;
 616                 }
 617         }
 618
 619         /* obtain dma-able memory for data transfer */
 620         if (data_out_sz) /* WRITE */ {
 621                 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
 622                     &data_out_dma);
 623                 if (!data_out) {
 624                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 625                             __LINE__, __func__);
 626                         ret = -ENOMEM;
 627                         mpt2sas_base_free_smid(ioc, smid);
 628                         goto out;
 629                 }
 630                 if (copy_from_user(data_out, karg.data_out_buf_ptr,
 631                         data_out_sz)) {
 632                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 633                             __LINE__, __func__);
 634                         ret =  -EFAULT;
 635                         mpt2sas_base_free_smid(ioc, smid);
 636                         goto out;
 637                 }
 638         }
 639
 640         if (data_in_sz) /* READ */ {
 641                 data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
 642                     &data_in_dma);
 643                 if (!data_in) {
 644                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 645                             __LINE__, __func__);
 646                         ret = -ENOMEM;
 647                         mpt2sas_base_free_smid(ioc, smid);
 648                         goto out;
 649                 }
 650         }
 651
 652         /* add scatter gather elements */
 653         psge = (void *)mpi_request + (karg.data_sge_offset*4);
 654
 655         if (!data_out_sz && !data_in_sz) {
 656                 mpt2sas_base_build_zero_len_sge(ioc, psge);
 657         } else if (data_out_sz && data_in_sz) {
 658                 /* WRITE sgel first */
 659                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
 660                     MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
 661                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
 662                 ioc->base_add_sg_single(psge, sgl_flags |
 663                     data_out_sz, data_out_dma);
 664
 665                 /* incr sgel */
 666                 psge += ioc->sge_size;
 667
 668                 /* READ sgel last */
 669                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
 670                     MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
 671                     MPI2_SGE_FLAGS_END_OF_LIST);
 672                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
 673                 ioc->base_add_sg_single(psge, sgl_flags |
 674                     data_in_sz, data_in_dma);
 675         } else if (data_out_sz) /* WRITE */ {
 676                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
 677                     MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
 678                     MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC);
 679                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
 680                 ioc->base_add_sg_single(psge, sgl_flags |
 681                     data_out_sz, data_out_dma);
 682         } else if (data_in_sz) /* READ */ {
 683                 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
 684                     MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
 685                     MPI2_SGE_FLAGS_END_OF_LIST);
 686                 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
 687                 ioc->base_add_sg_single(psge, sgl_flags |
 688                     data_in_sz, data_in_dma);
 689         }
 690
 691         /* send command to firmware */
 692 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 693         _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
 694 #endif
 695
 696         switch (mpi_request->Function) {
 697         case MPI2_FUNCTION_SCSI_IO_REQUEST:
 698         case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
 699         {
 700                 Mpi2SCSIIORequest_t *scsiio_request =
 701                     (Mpi2SCSIIORequest_t *)mpi_request;
 702                 scsiio_request->SenseBufferLowAddress =
 703                     (u32)mpt2sas_base_get_sense_buffer_dma(ioc, smid);
 704                 priv_sense = mpt2sas_base_get_sense_buffer(ioc, smid);
 705                 memset(priv_sense, 0, SCSI_SENSE_BUFFERSIZE);
 706                 mpt2sas_base_put_smid_scsi_io(ioc, smid, 0,
 707                     le16_to_cpu(mpi_request->FunctionDependent1));
 708                 break;
 709         }
 710         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 711         {
 712                 Mpi2SCSITaskManagementRequest_t *tm_request =
 713                     (Mpi2SCSITaskManagementRequest_t *)mpi_request;
 714
 715                 if (tm_request->TaskType ==
 716                     MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) {
 717                         if (_ctl_do_task_abort(ioc, &karg, tm_request))
 718                                 goto out;
 719                 }
 720
 721                 mutex_lock(&ioc->tm_cmds.mutex);
 722                 mpt2sas_scsih_set_tm_flag(ioc, le16_to_cpu(
 723                     tm_request->DevHandle));
 724                 mpt2sas_base_put_smid_hi_priority(ioc, smid,
 725                     mpi_request->VF_ID);
 726                 break;
 727         }
 728         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 729         {
 730                 Mpi2SmpPassthroughRequest_t *smp_request =
 731                     (Mpi2SmpPassthroughRequest_t *)mpi_request;
 732                 u8 *data;
 733
 734                 /* ioc determines which port to use */
 735                 smp_request->PhysicalPort = 0xFF;
 736                 if (smp_request->PassthroughFlags &
 737                     MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
 738                         data = (u8 *)&smp_request->SGL;
 739                 else
 740                         data = data_out;
 741
 742                 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
 743                         ioc->ioc_link_reset_in_progress = 1;
 744                         ioc->ignore_loginfos = 1;
 745                 }
 746                 mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
 747                 break;
 748         }
 749         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 750         {
 751                 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
 752                     (Mpi2SasIoUnitControlRequest_t *)mpi_request;
 753
 754                 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
 755                     || sasiounit_request->Operation ==
 756                     MPI2_SAS_OP_PHY_LINK_RESET) {
 757                         ioc->ioc_link_reset_in_progress = 1;
 758                         ioc->ignore_loginfos = 1;
 759                 }
 760                 mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
 761                 break;
 762         }
 763         default:
 764                 mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
 765                 break;
 766         }
 767
 768         if (karg.timeout < MPT2_IOCTL_DEFAULT_TIMEOUT)
 769                 timeout = MPT2_IOCTL_DEFAULT_TIMEOUT;
 770         else
 771                 timeout = karg.timeout;
 772         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
 773             timeout*HZ);
 774         if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
 775                 Mpi2SCSITaskManagementRequest_t *tm_request =
 776                     (Mpi2SCSITaskManagementRequest_t *)mpi_request;
 777                 mutex_unlock(&ioc->tm_cmds.mutex);
 778                 mpt2sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
 779                     tm_request->DevHandle));
 780         } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
 781             mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
 782                 ioc->ioc_link_reset_in_progress) {
 783                 ioc->ioc_link_reset_in_progress = 0;
 784                 ioc->ignore_loginfos = 0;
 785         }
 786         if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
 787                 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
 788                     __func__);
 789                 _debug_dump_mf(mpi_request, karg.data_sge_offset);
 790                 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
 791                         issue_reset = 1;
 792                 goto issue_host_reset;
 793         }
 794
 795         mpi_reply = ioc->ctl_cmds.reply;
 796         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
 797
 798 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 799         if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
 800             (ioc->logging_level & MPT_DEBUG_TM)) {
 801                 Mpi2SCSITaskManagementReply_t *tm_reply =
 802                     (Mpi2SCSITaskManagementReply_t *)mpi_reply;
 803
 804                 printk(MPT2SAS_DEBUG_FMT "TASK_MGMT: "
 805                     "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
 806                     "TerminationCount(0x%08x)\n", ioc->name,
 807                     tm_reply->IOCStatus, tm_reply->IOCLogInfo,
 808                     tm_reply->TerminationCount);
 809         }
 810 #endif
 811         /* copy out xdata to user */
 812         if (data_in_sz) {
 813                 if (copy_to_user(karg.data_in_buf_ptr, data_in,
 814                     data_in_sz)) {
 815                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 816                             __LINE__, __func__);
 817                         ret = -ENODATA;
 818                         goto out;
 819                 }
 820         }
 821
 822         /* copy out reply message frame to user */
 823         if (karg.max_reply_bytes) {
 824                 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
 825                 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
 826                     sz)) {
 827                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 828                             __LINE__, __func__);
 829                         ret = -ENODATA;
 830                         goto out;
 831                 }
 832         }
 833
 834         /* copy out sense to user */
 835         if (karg.max_sense_bytes && (mpi_request->Function ==
 836             MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
 837             MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
 838                 sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
 839                 if (copy_to_user(karg.sense_data_ptr, priv_sense, sz)) {
 840                         printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 841                             __LINE__, __func__);
 842                         ret = -ENODATA;
 843                         goto out;
 844                 }
 845         }
 846
 847  issue_host_reset:
 848         if (issue_reset) {
 849                 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 850                     mpi_request->Function ==
 851                     MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
 852                         printk(MPT2SAS_INFO_FMT "issue target reset: handle "
 853                             "= (0x%04x)\n", ioc->name,
 854                             mpi_request->FunctionDependent1);
 855                         mutex_lock(&ioc->tm_cmds.mutex);
 856                         mpt2sas_scsih_issue_tm(ioc,
 857                             mpi_request->FunctionDependent1, 0,
 858                             MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10);
 859                         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
 860                         mutex_unlock(&ioc->tm_cmds.mutex);
 861                 } else
 862                         mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
 863                             FORCE_BIG_HAMMER);
 864         }
 865
 866  out:
 867
 868         /* free memory associated with sg buffers */
 869         if (data_in)
 870                 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
 871                     data_in_dma);
 872
 873         if (data_out)
 874                 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
 875                     data_out_dma);
 876
 877         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
 878         mutex_unlock(&ioc->ctl_cmds.mutex);
 879         return ret;
 880 }
 881
 882 /**
 883  * _ctl_getiocinfo - main handler for MPT2IOCINFO opcode
 884  * @arg - user space buffer containing ioctl content
 885  */
 886 static long
 887 _ctl_getiocinfo(void __user *arg)
 888 {
 889         struct mpt2_ioctl_iocinfo karg;
 890         struct MPT2SAS_ADAPTER *ioc;
 891         u8 revision;
 892
 893         if (copy_from_user(&karg, arg, sizeof(karg))) {
 894                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
 895                     __FILE__, __LINE__, __func__);
 896                 return -EFAULT;
 897         }
 898         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
 899                 return -ENODEV;
 900
 901         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
 902             __func__));
 903
 904         memset(&karg, 0 , sizeof(karg));
 905         karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
 906         if (ioc->pfacts)
 907                 karg.port_number = ioc->pfacts[0].PortNumber;
 908         pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
 909         karg.hw_rev = revision;
 910         karg.pci_id = ioc->pdev->device;
 911         karg.subsystem_device = ioc->pdev->subsystem_device;
 912         karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
 913         karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
 914         karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
 915         karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
 916         karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
 917         karg.firmware_version = ioc->facts.FWVersion.Word;
 918         strncpy(karg.driver_version, MPT2SAS_DRIVER_VERSION,
 919             MPT2_IOCTL_VERSION_LENGTH);
 920         karg.driver_version[MPT2_IOCTL_VERSION_LENGTH - 1] = '\0';
 921         karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
 922
 923         if (copy_to_user(arg, &karg, sizeof(karg))) {
 924                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
 925                     __FILE__, __LINE__, __func__);
 926                 return -EFAULT;
 927         }
 928         return 0;
 929 }
 930
 931 /**
 932  * _ctl_eventquery - main handler for MPT2EVENTQUERY opcode
 933  * @arg - user space buffer containing ioctl content
 934  */
 935 static long
 936 _ctl_eventquery(void __user *arg)
 937 {
 938         struct mpt2_ioctl_eventquery karg;
 939         struct MPT2SAS_ADAPTER *ioc;
 940
 941         if (copy_from_user(&karg, arg, sizeof(karg))) {
 942                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
 943                     __FILE__, __LINE__, __func__);
 944                 return -EFAULT;
 945         }
 946         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
 947                 return -ENODEV;
 948
 949         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
 950             __func__));
 951
 952         karg.event_entries = MPT2SAS_CTL_EVENT_LOG_SIZE;
 953         memcpy(karg.event_types, ioc->event_type,
 954             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
 955
 956         if (copy_to_user(arg, &karg, sizeof(karg))) {
 957                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
 958                     __FILE__, __LINE__, __func__);
 959                 return -EFAULT;
 960         }
 961         return 0;
 962 }
 963
 964 /**
 965  * _ctl_eventenable - main handler for MPT2EVENTENABLE opcode
 966  * @arg - user space buffer containing ioctl content
 967  */
 968 static long
 969 _ctl_eventenable(void __user *arg)
 970 {
 971         struct mpt2_ioctl_eventenable karg;
 972         struct MPT2SAS_ADAPTER *ioc;
 973
 974         if (copy_from_user(&karg, arg, sizeof(karg))) {
 975                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
 976                     __FILE__, __LINE__, __func__);
 977                 return -EFAULT;
 978         }
 979         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
 980                 return -ENODEV;
 981
 982         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
 983             __func__));
 984
 985         if (ioc->event_log)
 986                 return 0;
 987         memcpy(ioc->event_type, karg.event_types,
 988             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
 989         mpt2sas_base_validate_event_type(ioc, ioc->event_type);
 990
 991         /* initialize event_log */
 992         ioc->event_context = 0;
 993         ioc->aen_event_read_flag = 0;
 994         ioc->event_log = kcalloc(MPT2SAS_CTL_EVENT_LOG_SIZE,
 995             sizeof(struct MPT2_IOCTL_EVENTS), GFP_KERNEL);
 996         if (!ioc->event_log) {
 997                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
 998                     __FILE__, __LINE__, __func__);
 999                 return -ENOMEM;
1000         }
1001         return 0;
1002 }
1003
1004 /**
1005  * _ctl_eventreport - main handler for MPT2EVENTREPORT opcode
1006  * @arg - user space buffer containing ioctl content
1007  */
1008 static long
1009 _ctl_eventreport(void __user *arg)
1010 {
1011         struct mpt2_ioctl_eventreport karg;
1012         struct MPT2SAS_ADAPTER *ioc;
1013         u32 number_bytes, max_events, max;
1014         struct mpt2_ioctl_eventreport __user *uarg = arg;
1015
1016         if (copy_from_user(&karg, arg, sizeof(karg))) {
1017                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1018                     __FILE__, __LINE__, __func__);
1019                 return -EFAULT;
1020         }
1021         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1022                 return -ENODEV;
1023
1024         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1025             __func__));
1026
1027         number_bytes = karg.hdr.max_data_size -
1028             sizeof(struct mpt2_ioctl_header);
1029         max_events = number_bytes/sizeof(struct MPT2_IOCTL_EVENTS);
1030         max = min_t(u32, MPT2SAS_CTL_EVENT_LOG_SIZE, max_events);
1031
1032         /* If fewer than 1 event is requested, there must have
1033          * been some type of error.
1034          */
1035         if (!max || !ioc->event_log)
1036                 return -ENODATA;
1037
1038         number_bytes = max * sizeof(struct MPT2_IOCTL_EVENTS);
1039         if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1040                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1041                     __FILE__, __LINE__, __func__);
1042                 return -EFAULT;
1043         }
1044
1045         /* reset flag so SIGIO can restart */
1046         ioc->aen_event_read_flag = 0;
1047         return 0;
1048 }
1049
1050 /**
1051  * _ctl_do_reset - main handler for MPT2HARDRESET opcode
1052  * @arg - user space buffer containing ioctl content
1053  */
1054 static long
1055 _ctl_do_reset(void __user *arg)
1056 {
1057         struct mpt2_ioctl_diag_reset karg;
1058         struct MPT2SAS_ADAPTER *ioc;
1059         int retval;
1060
1061         if (copy_from_user(&karg, arg, sizeof(karg))) {
1062                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1063                     __FILE__, __LINE__, __func__);
1064                 return -EFAULT;
1065         }
1066         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1067                 return -ENODEV;
1068
1069         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1070             __func__));
1071
1072         retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1073             FORCE_BIG_HAMMER);
1074         printk(MPT2SAS_INFO_FMT "host reset: %s\n",
1075             ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1076         return 0;
1077 }
1078
1079 /**
1080  * _ctl_btdh_search_sas_device - searching for sas device
1081  * @ioc: per adapter object
1082  * @btdh: btdh ioctl payload
1083  */
1084 static int
1085 _ctl_btdh_search_sas_device(struct MPT2SAS_ADAPTER *ioc,
1086     struct mpt2_ioctl_btdh_mapping *btdh)
1087 {
1088         struct _sas_device *sas_device;
1089         unsigned long flags;
1090         int rc = 0;
1091
1092         if (list_empty(&ioc->sas_device_list))
1093                 return rc;
1094
1095         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1096         list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1097                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1098                     btdh->handle == sas_device->handle) {
1099                         btdh->bus = sas_device->channel;
1100                         btdh->id = sas_device->id;
1101                         rc = 1;
1102                         goto out;
1103                 } else if (btdh->bus == sas_device->channel && btdh->id ==
1104                     sas_device->id && btdh->handle == 0xFFFF) {
1105                         btdh->handle = sas_device->handle;
1106                         rc = 1;
1107                         goto out;
1108                 }
1109         }
1110  out:
1111         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1112         return rc;
1113 }
1114
1115 /**
1116  * _ctl_btdh_search_raid_device - searching for raid device
1117  * @ioc: per adapter object
1118  * @btdh: btdh ioctl payload
1119  */
1120 static int
1121 _ctl_btdh_search_raid_device(struct MPT2SAS_ADAPTER *ioc,
1122     struct mpt2_ioctl_btdh_mapping *btdh)
1123 {
1124         struct _raid_device *raid_device;
1125         unsigned long flags;
1126         int rc = 0;
1127
1128         if (list_empty(&ioc->raid_device_list))
1129                 return rc;
1130
1131         spin_lock_irqsave(&ioc->raid_device_lock, flags);
1132         list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1133                 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1134                     btdh->handle == raid_device->handle) {
1135                         btdh->bus = raid_device->channel;
1136                         btdh->id = raid_device->id;
1137                         rc = 1;
1138                         goto out;
1139                 } else if (btdh->bus == raid_device->channel && btdh->id ==
1140                     raid_device->id && btdh->handle == 0xFFFF) {
1141                         btdh->handle = raid_device->handle;
1142                         rc = 1;
1143                         goto out;
1144                 }
1145         }
1146  out:
1147         spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1148         return rc;
1149 }
1150
1151 /**
1152  * _ctl_btdh_mapping - main handler for MPT2BTDHMAPPING opcode
1153  * @arg - user space buffer containing ioctl content
1154  */
1155 static long
1156 _ctl_btdh_mapping(void __user *arg)
1157 {
1158         struct mpt2_ioctl_btdh_mapping karg;
1159         struct MPT2SAS_ADAPTER *ioc;
1160         int rc;
1161
1162         if (copy_from_user(&karg, arg, sizeof(karg))) {
1163                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1164                     __FILE__, __LINE__, __func__);
1165                 return -EFAULT;
1166         }
1167         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1168                 return -ENODEV;
1169
1170         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1171             __func__));
1172
1173         rc = _ctl_btdh_search_sas_device(ioc, &karg);
1174         if (!rc)
1175                 _ctl_btdh_search_raid_device(ioc, &karg);
1176
1177         if (copy_to_user(arg, &karg, sizeof(karg))) {
1178                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1179                     __FILE__, __LINE__, __func__);
1180                 return -EFAULT;
1181         }
1182         return 0;
1183 }
1184
1185 /**
1186  * _ctl_diag_capability - return diag buffer capability
1187  * @ioc: per adapter object
1188  * @buffer_type: specifies either TRACE or SNAPSHOT
1189  *
1190  * returns 1 when diag buffer support is enabled in firmware
1191  */
1192 static u8
1193 _ctl_diag_capability(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type)
1194 {
1195         u8 rc = 0;
1196
1197         switch (buffer_type) {
1198         case MPI2_DIAG_BUF_TYPE_TRACE:
1199                 if (ioc->facts.IOCCapabilities &
1200                     MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1201                         rc = 1;
1202                 break;
1203         case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1204                 if (ioc->facts.IOCCapabilities &
1205                     MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1206                         rc = 1;
1207                 break;
1208         }
1209
1210         return rc;
1211 }
1212
1213 /**
1214  * _ctl_diag_register - application register with driver
1215  * @arg - user space buffer containing ioctl content
1216  * @state - NON_BLOCKING or BLOCKING
1217  *
1218  * This will allow the driver to setup any required buffers that will be
1219  * needed by firmware to communicate with the driver.
1220  */
1221 static long
1222 _ctl_diag_register(void __user *arg, enum block_state state)
1223 {
1224         struct mpt2_diag_register karg;
1225         struct MPT2SAS_ADAPTER *ioc;
1226         int rc, i;
1227         void *request_data = NULL;
1228         dma_addr_t request_data_dma;
1229         u32 request_data_sz = 0;
1230         Mpi2DiagBufferPostRequest_t *mpi_request;
1231         Mpi2DiagBufferPostReply_t *mpi_reply;
1232         u8 buffer_type;
1233         unsigned long timeleft;
1234         u16 smid;
1235         u16 ioc_status;
1236         u8 issue_reset = 0;
1237
1238         if (copy_from_user(&karg, arg, sizeof(karg))) {
1239                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1240                     __FILE__, __LINE__, __func__);
1241                 return -EFAULT;
1242         }
1243         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1244                 return -ENODEV;
1245
1246         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1247             __func__));
1248
1249         buffer_type = karg.buffer_type;
1250         if (!_ctl_diag_capability(ioc, buffer_type)) {
1251                 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1252                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1253                 return -EPERM;
1254         }
1255
1256         if (ioc->diag_buffer_status[buffer_type] &
1257             MPT2_DIAG_BUFFER_IS_REGISTERED) {
1258                 printk(MPT2SAS_ERR_FMT "%s: already has a registered "
1259                     "buffer for buffer_type(0x%02x)\n", ioc->name, __func__,
1260                     buffer_type);
1261                 return -EINVAL;
1262         }
1263
1264         if (karg.requested_buffer_size % 4)  {
1265                 printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size "
1266                     "is not 4 byte aligned\n", ioc->name, __func__);
1267                 return -EINVAL;
1268         }
1269
1270         if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1271                 return -EAGAIN;
1272         else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1273                 return -ERESTARTSYS;
1274
1275         if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1276                 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1277                     ioc->name, __func__);
1278                 rc = -EAGAIN;
1279                 goto out;
1280         }
1281
1282         smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1283         if (!smid) {
1284                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1285                     ioc->name, __func__);
1286                 rc = -EAGAIN;
1287                 goto out;
1288         }
1289
1290         rc = 0;
1291         ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1292         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1293         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1294         ioc->ctl_cmds.smid = smid;
1295
1296         request_data = ioc->diag_buffer[buffer_type];
1297         request_data_sz = karg.requested_buffer_size;
1298         ioc->unique_id[buffer_type] = karg.unique_id;
1299         ioc->diag_buffer_status[buffer_type] = 0;
1300         memcpy(ioc->product_specific[buffer_type], karg.product_specific,
1301             MPT2_PRODUCT_SPECIFIC_DWORDS);
1302         ioc->diagnostic_flags[buffer_type] = karg.diagnostic_flags;
1303
1304         if (request_data) {
1305                 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1306                 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1307                         pci_free_consistent(ioc->pdev,
1308                             ioc->diag_buffer_sz[buffer_type],
1309                             request_data, request_data_dma);
1310                         request_data = NULL;
1311                 }
1312         }
1313
1314         if (request_data == NULL) {
1315                 ioc->diag_buffer_sz[buffer_type] = 0;
1316                 ioc->diag_buffer_dma[buffer_type] = 0;
1317                 request_data = pci_alloc_consistent(
1318                         ioc->pdev, request_data_sz, &request_data_dma);
1319                 if (request_data == NULL) {
1320                         printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"
1321                             " for diag buffers, requested size(%d)\n",
1322                             ioc->name, __func__, request_data_sz);
1323                         mpt2sas_base_free_smid(ioc, smid);
1324                         return -ENOMEM;
1325                 }
1326                 ioc->diag_buffer[buffer_type] = request_data;
1327                 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1328                 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1329         }
1330
1331         mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1332         mpi_request->BufferType = karg.buffer_type;
1333         mpi_request->Flags = cpu_to_le32(karg.diagnostic_flags);
1334         mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1335         mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1336
1337         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: diag_buffer(0x%p), "
1338             "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data,
1339             (unsigned long long)request_data_dma, mpi_request->BufferLength));
1340
1341         for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1342                 mpi_request->ProductSpecific[i] =
1343                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
1344
1345         mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
1346         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1347             MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1348
1349         if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1350                 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1351                     __func__);
1352                 _debug_dump_mf(mpi_request,
1353                     sizeof(Mpi2DiagBufferPostRequest_t)/4);
1354                 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1355                         issue_reset = 1;
1356                 goto issue_host_reset;
1357         }
1358
1359         /* process the completed Reply Message Frame */
1360         if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1361                 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1362                     ioc->name, __func__);
1363                 rc = -EFAULT;
1364                 goto out;
1365         }
1366
1367         mpi_reply = ioc->ctl_cmds.reply;
1368         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1369
1370         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1371                 ioc->diag_buffer_status[buffer_type] |=
1372                         MPT2_DIAG_BUFFER_IS_REGISTERED;
1373                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1374                     ioc->name, __func__));
1375         } else {
1376                 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1377                     "log_info(0x%08x)\n", ioc->name, __func__,
1378                     ioc_status, mpi_reply->IOCLogInfo);
1379                 rc = -EFAULT;
1380         }
1381
1382  issue_host_reset:
1383         if (issue_reset)
1384                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1385                     FORCE_BIG_HAMMER);
1386
1387  out:
1388
1389         if (rc && request_data)
1390                 pci_free_consistent(ioc->pdev, request_data_sz,
1391                     request_data, request_data_dma);
1392
1393         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1394         mutex_unlock(&ioc->ctl_cmds.mutex);
1395         return rc;
1396 }
1397
1398 /**
1399  * _ctl_diag_unregister - application unregister with driver
1400  * @arg - user space buffer containing ioctl content
1401  *
1402  * This will allow the driver to cleanup any memory allocated for diag
1403  * messages and to free up any resources.
1404  */
1405 static long
1406 _ctl_diag_unregister(void __user *arg)
1407 {
1408         struct mpt2_diag_unregister karg;
1409         struct MPT2SAS_ADAPTER *ioc;
1410         void *request_data;
1411         dma_addr_t request_data_dma;
1412         u32 request_data_sz;
1413         u8 buffer_type;
1414
1415         if (copy_from_user(&karg, arg, sizeof(karg))) {
1416                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1417                     __FILE__, __LINE__, __func__);
1418                 return -EFAULT;
1419         }
1420         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1421                 return -ENODEV;
1422
1423         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1424             __func__));
1425
1426         buffer_type = karg.unique_id & 0x000000ff;
1427         if (!_ctl_diag_capability(ioc, buffer_type)) {
1428                 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1429                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1430                 return -EPERM;
1431         }
1432
1433         if ((ioc->diag_buffer_status[buffer_type] &
1434             MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1435                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1436                     "registered\n", ioc->name, __func__, buffer_type);
1437                 return -EINVAL;
1438         }
1439         if ((ioc->diag_buffer_status[buffer_type] &
1440             MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1441                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) has not been "
1442                     "released\n", ioc->name, __func__, buffer_type);
1443                 return -EINVAL;
1444         }
1445
1446         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1447                 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1448                     "registered\n", ioc->name, __func__, karg.unique_id);
1449                 return -EINVAL;
1450         }
1451
1452         request_data = ioc->diag_buffer[buffer_type];
1453         if (!request_data) {
1454                 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1455                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1456                 return -ENOMEM;
1457         }
1458
1459         request_data_sz = ioc->diag_buffer_sz[buffer_type];
1460         request_data_dma = ioc->diag_buffer_dma[buffer_type];
1461         pci_free_consistent(ioc->pdev, request_data_sz,
1462             request_data, request_data_dma);
1463         ioc->diag_buffer[buffer_type] = NULL;
1464         ioc->diag_buffer_status[buffer_type] = 0;
1465         return 0;
1466 }
1467
1468 /**
1469  * _ctl_diag_query - query relevant info associated with diag buffers
1470  * @arg - user space buffer containing ioctl content
1471  *
1472  * The application will send only buffer_type and unique_id.  Driver will
1473  * inspect unique_id first, if valid, fill in all the info.  If unique_id is
1474  * 0x00, the driver will return info specified by Buffer Type.
1475  */
1476 static long
1477 _ctl_diag_query(void __user *arg)
1478 {
1479         struct mpt2_diag_query karg;
1480         struct MPT2SAS_ADAPTER *ioc;
1481         void *request_data;
1482         int i;
1483         u8 buffer_type;
1484
1485         if (copy_from_user(&karg, arg, sizeof(karg))) {
1486                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1487                     __FILE__, __LINE__, __func__);
1488                 return -EFAULT;
1489         }
1490         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1491                 return -ENODEV;
1492
1493         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1494             __func__));
1495
1496         karg.application_flags = 0;
1497         buffer_type = karg.buffer_type;
1498
1499         if (!_ctl_diag_capability(ioc, buffer_type)) {
1500                 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1501                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1502                 return -EPERM;
1503         }
1504
1505         if ((ioc->diag_buffer_status[buffer_type] &
1506             MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1507                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1508                     "registered\n", ioc->name, __func__, buffer_type);
1509                 return -EINVAL;
1510         }
1511
1512         if (karg.unique_id & 0xffffff00) {
1513                 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1514                         printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1515                             "registered\n", ioc->name, __func__,
1516                             karg.unique_id);
1517                         return -EINVAL;
1518                 }
1519         }
1520
1521         request_data = ioc->diag_buffer[buffer_type];
1522         if (!request_data) {
1523                 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1524                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1525                 return -ENOMEM;
1526         }
1527
1528         if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED)
1529                 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1530                     MPT2_APP_FLAGS_BUFFER_VALID);
1531         else
1532                 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1533                     MPT2_APP_FLAGS_BUFFER_VALID |
1534                     MPT2_APP_FLAGS_FW_BUFFER_ACCESS);
1535
1536         for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1537                 karg.product_specific[i] =
1538                     ioc->product_specific[buffer_type][i];
1539
1540         karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1541         karg.driver_added_buffer_size = 0;
1542         karg.unique_id = ioc->unique_id[buffer_type];
1543         karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1544
1545         if (copy_to_user(arg, &karg, sizeof(struct mpt2_diag_query))) {
1546                 printk(MPT2SAS_ERR_FMT "%s: unable to write mpt2_diag_query "
1547                     "data @ %p\n", ioc->name, __func__, arg);
1548                 return -EFAULT;
1549         }
1550         return 0;
1551 }
1552
1553 /**
1554  * _ctl_diag_release - request to send Diag Release Message to firmware
1555  * @arg - user space buffer containing ioctl content
1556  * @state - NON_BLOCKING or BLOCKING
1557  *
1558  * This allows ownership of the specified buffer to returned to the driver,
1559  * allowing an application to read the buffer without fear that firmware is
1560  * overwritting information in the buffer.
1561  */
1562 static long
1563 _ctl_diag_release(void __user *arg, enum block_state state)
1564 {
1565         struct mpt2_diag_release karg;
1566         struct MPT2SAS_ADAPTER *ioc;
1567         void *request_data;
1568         int rc;
1569         Mpi2DiagReleaseRequest_t *mpi_request;
1570         Mpi2DiagReleaseReply_t *mpi_reply;
1571         u8 buffer_type;
1572         unsigned long timeleft;
1573         u16 smid;
1574         u16 ioc_status;
1575         u8 issue_reset = 0;
1576
1577         if (copy_from_user(&karg, arg, sizeof(karg))) {
1578                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1579                     __FILE__, __LINE__, __func__);
1580                 return -EFAULT;
1581         }
1582         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1583                 return -ENODEV;
1584
1585         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1586             __func__));
1587
1588         buffer_type = karg.unique_id & 0x000000ff;
1589         if (!_ctl_diag_capability(ioc, buffer_type)) {
1590                 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1591                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1592                 return -EPERM;
1593         }
1594
1595         if ((ioc->diag_buffer_status[buffer_type] &
1596             MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1597                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1598                     "registered\n", ioc->name, __func__, buffer_type);
1599                 return -EINVAL;
1600         }
1601
1602         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1603                 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1604                     "registered\n", ioc->name, __func__, karg.unique_id);
1605                 return -EINVAL;
1606         }
1607
1608         if (ioc->diag_buffer_status[buffer_type] &
1609             MPT2_DIAG_BUFFER_IS_RELEASED) {
1610                 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1611                     "is already released\n", ioc->name, __func__,
1612                     buffer_type);
1613                 return 0;
1614         }
1615
1616         request_data = ioc->diag_buffer[buffer_type];
1617
1618         if (!request_data) {
1619                 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1620                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1621                 return -ENOMEM;
1622         }
1623
1624         if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1625                 return -EAGAIN;
1626         else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1627                 return -ERESTARTSYS;
1628
1629         if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1630                 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1631                     ioc->name, __func__);
1632                 rc = -EAGAIN;
1633                 goto out;
1634         }
1635
1636         smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1637         if (!smid) {
1638                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1639                     ioc->name, __func__);
1640                 rc = -EAGAIN;
1641                 goto out;
1642         }
1643
1644         rc = 0;
1645         ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1646         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1647         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1648         ioc->ctl_cmds.smid = smid;
1649
1650         mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1651         mpi_request->BufferType = buffer_type;
1652
1653         mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
1654         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1655             MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1656
1657         if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1658                 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1659                     __func__);
1660                 _debug_dump_mf(mpi_request,
1661                     sizeof(Mpi2DiagReleaseRequest_t)/4);
1662                 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1663                         issue_reset = 1;
1664                 goto issue_host_reset;
1665         }
1666
1667         /* process the completed Reply Message Frame */
1668         if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1669                 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1670                     ioc->name, __func__);
1671                 rc = -EFAULT;
1672                 goto out;
1673         }
1674
1675         mpi_reply = ioc->ctl_cmds.reply;
1676         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1677
1678         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1679                 ioc->diag_buffer_status[buffer_type] |=
1680                     MPT2_DIAG_BUFFER_IS_RELEASED;
1681                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1682                     ioc->name, __func__));
1683         } else {
1684                 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1685                     "log_info(0x%08x)\n", ioc->name, __func__,
1686                     ioc_status, mpi_reply->IOCLogInfo);
1687                 rc = -EFAULT;
1688         }
1689
1690  issue_host_reset:
1691         if (issue_reset)
1692                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1693                     FORCE_BIG_HAMMER);
1694
1695  out:
1696
1697         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1698         mutex_unlock(&ioc->ctl_cmds.mutex);
1699         return rc;
1700 }
1701
1702 /**
1703  * _ctl_diag_read_buffer - request for copy of the diag buffer
1704  * @arg - user space buffer containing ioctl content
1705  * @state - NON_BLOCKING or BLOCKING
1706  */
1707 static long
1708 _ctl_diag_read_buffer(void __user *arg, enum block_state state)
1709 {
1710         struct mpt2_diag_read_buffer karg;
1711         struct mpt2_diag_read_buffer __user *uarg = arg;
1712         struct MPT2SAS_ADAPTER *ioc;
1713         void *request_data, *diag_data;
1714         Mpi2DiagBufferPostRequest_t *mpi_request;
1715         Mpi2DiagBufferPostReply_t *mpi_reply;
1716         int rc, i;
1717         u8 buffer_type;
1718         unsigned long timeleft;
1719         u16 smid;
1720         u16 ioc_status;
1721         u8 issue_reset = 0;
1722
1723         if (copy_from_user(&karg, arg, sizeof(karg))) {
1724                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1725                     __FILE__, __LINE__, __func__);
1726                 return -EFAULT;
1727         }
1728         if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1729                 return -ENODEV;
1730
1731         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1732             __func__));
1733
1734         buffer_type = karg.unique_id & 0x000000ff;
1735         if (!_ctl_diag_capability(ioc, buffer_type)) {
1736                 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1737                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1738                 return -EPERM;
1739         }
1740
1741         if (karg.unique_id != ioc->unique_id[buffer_type]) {
1742                 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1743                     "registered\n", ioc->name, __func__, karg.unique_id);
1744                 return -EINVAL;
1745         }
1746
1747         request_data = ioc->diag_buffer[buffer_type];
1748         if (!request_data) {
1749                 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1750                     "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1751                 return -ENOMEM;
1752         }
1753
1754         if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
1755                 printk(MPT2SAS_ERR_FMT "%s: either the starting_offset "
1756                     "or bytes_to_read are not 4 byte aligned\n", ioc->name,
1757                     __func__);
1758                 return -EINVAL;
1759         }
1760
1761         diag_data = (void *)(request_data + karg.starting_offset);
1762         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: diag_buffer(%p), "
1763             "offset(%d), sz(%d)\n", ioc->name, __func__,
1764             diag_data, karg.starting_offset, karg.bytes_to_read));
1765
1766         if (copy_to_user((void __user *)uarg->diagnostic_data,
1767             diag_data, karg.bytes_to_read)) {
1768                 printk(MPT2SAS_ERR_FMT "%s: Unable to write "
1769                     "mpt_diag_read_buffer_t data @ %p\n", ioc->name,
1770                     __func__, diag_data);
1771                 return -EFAULT;
1772         }
1773
1774         if ((karg.flags & MPT2_FLAGS_REREGISTER) == 0)
1775                 return 0;
1776
1777         dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: Reregister "
1778                 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type));
1779         if ((ioc->diag_buffer_status[buffer_type] &
1780             MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1781                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
1782                     "buffer_type(0x%02x) is still registered\n", ioc->name,
1783                      __func__, buffer_type));
1784                 return 0;
1785         }
1786         /* Get a free request frame and save the message context.
1787         */
1788         if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1789                 return -EAGAIN;
1790         else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1791                 return -ERESTARTSYS;
1792
1793         if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1794                 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1795                     ioc->name, __func__);
1796                 rc = -EAGAIN;
1797                 goto out;
1798         }
1799
1800         smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1801         if (!smid) {
1802                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1803                     ioc->name, __func__);
1804                 rc = -EAGAIN;
1805                 goto out;
1806         }
1807
1808         rc = 0;
1809         ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1810         memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1811         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1812         ioc->ctl_cmds.smid = smid;
1813
1814         mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1815         mpi_request->BufferType = buffer_type;
1816         mpi_request->BufferLength =
1817             cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
1818         mpi_request->BufferAddress =
1819             cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
1820         for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1821                 mpi_request->ProductSpecific[i] =
1822                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
1823
1824         mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
1825         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1826             MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1827
1828         if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1829                 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1830                     __func__);
1831                 _debug_dump_mf(mpi_request,
1832                     sizeof(Mpi2DiagBufferPostRequest_t)/4);
1833                 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1834                         issue_reset = 1;
1835                 goto issue_host_reset;
1836         }
1837
1838         /* process the completed Reply Message Frame */
1839         if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1840                 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1841                     ioc->name, __func__);
1842                 rc = -EFAULT;
1843                 goto out;
1844         }
1845
1846         mpi_reply = ioc->ctl_cmds.reply;
1847         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1848
1849         if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1850                 ioc->diag_buffer_status[buffer_type] |=
1851                     MPT2_DIAG_BUFFER_IS_REGISTERED;
1852                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1853                     ioc->name, __func__));
1854         } else {
1855                 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1856                     "log_info(0x%08x)\n", ioc->name, __func__,
1857                     ioc_status, mpi_reply->IOCLogInfo);
1858                 rc = -EFAULT;
1859         }
1860
1861  issue_host_reset:
1862         if (issue_reset)
1863                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1864                     FORCE_BIG_HAMMER);
1865
1866  out:
1867
1868         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1869         mutex_unlock(&ioc->ctl_cmds.mutex);
1870         return rc;
1871 }
1872
1873 /**
1874  * _ctl_ioctl_main - main ioctl entry point
1875  * @file - (struct file)
1876  * @cmd - ioctl opcode
1877  * @arg -
1878  */
1879 static long
1880 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg)
1881 {
1882         enum block_state state;
1883         long ret = -EINVAL;
1884         unsigned long flags;
1885
1886         state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING :
1887             BLOCKING;
1888
1889         switch (cmd) {
1890         case MPT2IOCINFO:
1891                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_iocinfo))
1892                         ret = _ctl_getiocinfo(arg);
1893                 break;
1894         case MPT2COMMAND:
1895         {
1896                 struct mpt2_ioctl_command karg;
1897                 struct mpt2_ioctl_command __user *uarg;
1898                 struct MPT2SAS_ADAPTER *ioc;
1899
1900                 if (copy_from_user(&karg, arg, sizeof(karg))) {
1901                         printk(KERN_ERR "failure at %s:%d/%s()!\n",
1902                             __FILE__, __LINE__, __func__);
1903                         return -EFAULT;
1904                 }
1905
1906                 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
1907                     !ioc)
1908                         return -ENODEV;
1909
1910                 spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
1911                 if (ioc->shost_recovery) {
1912                         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock,
1913                             flags);
1914                         return -EAGAIN;
1915                 }
1916                 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
1917
1918                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) {
1919                         uarg = arg;
1920                         ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
1921                 }
1922                 break;
1923         }
1924         case MPT2EVENTQUERY:
1925                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventquery))
1926                         ret = _ctl_eventquery(arg);
1927                 break;
1928         case MPT2EVENTENABLE:
1929                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventenable))
1930                         ret = _ctl_eventenable(arg);
1931                 break;
1932         case MPT2EVENTREPORT:
1933                 ret = _ctl_eventreport(arg);
1934                 break;
1935         case MPT2HARDRESET:
1936                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_diag_reset))
1937                         ret = _ctl_do_reset(arg);
1938                 break;
1939         case MPT2BTDHMAPPING:
1940                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_btdh_mapping))
1941                         ret = _ctl_btdh_mapping(arg);
1942                 break;
1943         case MPT2DIAGREGISTER:
1944                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_register))
1945                         ret = _ctl_diag_register(arg, state);
1946                 break;
1947         case MPT2DIAGUNREGISTER:
1948                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_unregister))
1949                         ret = _ctl_diag_unregister(arg);
1950                 break;
1951         case MPT2DIAGQUERY:
1952                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_query))
1953                         ret = _ctl_diag_query(arg);
1954                 break;
1955         case MPT2DIAGRELEASE:
1956                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_release))
1957                         ret = _ctl_diag_release(arg, state);
1958                 break;
1959         case MPT2DIAGREADBUFFER:
1960                 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_read_buffer))
1961                         ret = _ctl_diag_read_buffer(arg, state);
1962                 break;
1963         default:
1964         {
1965                 struct mpt2_ioctl_command karg;
1966                 struct MPT2SAS_ADAPTER *ioc;
1967
1968                 if (copy_from_user(&karg, arg, sizeof(karg))) {
1969                         printk(KERN_ERR "failure at %s:%d/%s()!\n",
1970                             __FILE__, __LINE__, __func__);
1971                         return -EFAULT;
1972                 }
1973
1974                 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
1975                     !ioc)
1976                         return -ENODEV;
1977
1978                 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1979                     "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
1980                 break;
1981         }
1982         }
1983         return ret;
1984 }
1985
1986 /**
1987  * _ctl_ioctl - main ioctl entry point (unlocked)
1988  * @file - (struct file)
1989  * @cmd - ioctl opcode
1990  * @arg -
1991  */
1992 static long
1993 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1994 {
1995         long ret;
1996         lock_kernel();
1997         ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
1998         unlock_kernel();
1999         return ret;
2000 }
2001
2002 #ifdef CONFIG_COMPAT
2003 /**
2004  * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2005  * @file - (struct file)
2006  * @cmd - ioctl opcode
2007  * @arg - (struct mpt2_ioctl_command32)
2008  *
2009  * MPT2COMMAND32 - Handle 32bit applications running on 64bit os.
2010  */
2011 static long
2012 _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg)
2013 {
2014         struct mpt2_ioctl_command32 karg32;
2015         struct mpt2_ioctl_command32 __user *uarg;
2016         struct mpt2_ioctl_command karg;
2017         struct MPT2SAS_ADAPTER *ioc;
2018         enum block_state state;
2019         unsigned long flags;
2020
2021         if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32))
2022                 return -EINVAL;
2023
2024         uarg = (struct mpt2_ioctl_command32 __user *) arg;
2025
2026         if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2027                 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2028                     __FILE__, __LINE__, __func__);
2029                 return -EFAULT;
2030         }
2031         if (_ctl_verify_adapter(karg32.hdr.ioc_number, &ioc) == -1 || !ioc)
2032                 return -ENODEV;
2033
2034         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
2035         if (ioc->shost_recovery) {
2036                 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock,
2037                     flags);
2038                 return -EAGAIN;
2039         }
2040         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
2041
2042         memset(&karg, 0, sizeof(struct mpt2_ioctl_command));
2043         karg.hdr.ioc_number = karg32.hdr.ioc_number;
2044         karg.hdr.port_number = karg32.hdr.port_number;
2045         karg.hdr.max_data_size = karg32.hdr.max_data_size;
2046         karg.timeout = karg32.timeout;
2047         karg.max_reply_bytes = karg32.max_reply_bytes;
2048         karg.data_in_size = karg32.data_in_size;
2049         karg.data_out_size = karg32.data_out_size;
2050         karg.max_sense_bytes = karg32.max_sense_bytes;
2051         karg.data_sge_offset = karg32.data_sge_offset;
2052         memcpy(&karg.reply_frame_buf_ptr, &karg32.reply_frame_buf_ptr,
2053             sizeof(uint32_t));
2054         memcpy(&karg.data_in_buf_ptr, &karg32.data_in_buf_ptr,
2055             sizeof(uint32_t));
2056         memcpy(&karg.data_out_buf_ptr, &karg32.data_out_buf_ptr,
2057             sizeof(uint32_t));
2058         memcpy(&karg.sense_data_ptr, &karg32.sense_data_ptr,
2059             sizeof(uint32_t));
2060         state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2061         return _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2062 }
2063
2064 /**
2065  * _ctl_ioctl_compat - main ioctl entry point (compat)
2066  * @file -
2067  * @cmd -
2068  * @arg -
2069  *
2070  * This routine handles 32 bit applications in 64bit os.
2071  */
2072 static long
2073 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2074 {
2075         long ret;
2076         lock_kernel();
2077         if (cmd == MPT2COMMAND32)
2078                 ret = _ctl_compat_mpt_command(file, cmd, arg);
2079         else
2080                 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2081         unlock_kernel();
2082         return ret;
2083 }
2084 #endif
2085
2086 /* scsi host attributes */
2087
2088 /**
2089  * _ctl_version_fw_show - firmware version
2090  * @cdev - pointer to embedded class device
2091  * @buf - the buffer returned
2092  *
2093  * A sysfs 'read-only' shost attribute.
2094  */
2095 static ssize_t
2096 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2097     char *buf)
2098 {
2099         struct Scsi_Host *shost = class_to_shost(cdev);
2100         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2101
2102         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2103             (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2104             (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2105             (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2106             ioc->facts.FWVersion.Word & 0x000000FF);
2107 }
2108 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2109
2110 /**
2111  * _ctl_version_bios_show - bios version
2112  * @cdev - pointer to embedded class device
2113  * @buf - the buffer returned
2114  *
2115  * A sysfs 'read-only' shost attribute.
2116  */
2117 static ssize_t
2118 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2119     char *buf)
2120 {
2121         struct Scsi_Host *shost = class_to_shost(cdev);
2122         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2123
2124         u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2125
2126         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2127             (version & 0xFF000000) >> 24,
2128             (version & 0x00FF0000) >> 16,
2129             (version & 0x0000FF00) >> 8,
2130             version & 0x000000FF);
2131 }
2132 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2133
2134 /**
2135  * _ctl_version_mpi_show - MPI (message passing interface) version
2136  * @cdev - pointer to embedded class device
2137  * @buf - the buffer returned
2138  *
2139  * A sysfs 'read-only' shost attribute.
2140  */
2141 static ssize_t
2142 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2143     char *buf)
2144 {
2145         struct Scsi_Host *shost = class_to_shost(cdev);
2146         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2147
2148         return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2149             ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2150 }
2151 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2152
2153 /**
2154  * _ctl_version_product_show - product name
2155  * @cdev - pointer to embedded class device
2156  * @buf - the buffer returned
2157  *
2158  * A sysfs 'read-only' shost attribute.
2159  */
2160 static ssize_t
2161 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2162     char *buf)
2163 {
2164         struct Scsi_Host *shost = class_to_shost(cdev);
2165         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2166
2167         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2168 }
2169 static DEVICE_ATTR(version_product, S_IRUGO,
2170    _ctl_version_product_show, NULL);
2171
2172 /**
2173  * _ctl_version_nvdata_persistent_show - ndvata persistent version
2174  * @cdev - pointer to embedded class device
2175  * @buf - the buffer returned
2176  *
2177  * A sysfs 'read-only' shost attribute.
2178  */
2179 static ssize_t
2180 _ctl_version_nvdata_persistent_show(struct device *cdev,
2181     struct device_attribute *attr, char *buf)
2182 {
2183         struct Scsi_Host *shost = class_to_shost(cdev);
2184         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2185
2186         return snprintf(buf, PAGE_SIZE, "%02xh\n",
2187             le16_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2188 }
2189 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2190     _ctl_version_nvdata_persistent_show, NULL);
2191
2192 /**
2193  * _ctl_version_nvdata_default_show - nvdata default version
2194  * @cdev - pointer to embedded class device
2195  * @buf - the buffer returned
2196  *
2197  * A sysfs 'read-only' shost attribute.
2198  */
2199 static ssize_t
2200 _ctl_version_nvdata_default_show(struct device *cdev,
2201     struct device_attribute *attr, char *buf)
2202 {
2203         struct Scsi_Host *shost = class_to_shost(cdev);
2204         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2205
2206         return snprintf(buf, PAGE_SIZE, "%02xh\n",
2207             le16_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2208 }
2209 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2210     _ctl_version_nvdata_default_show, NULL);
2211
2212 /**
2213  * _ctl_board_name_show - board name
2214  * @cdev - pointer to embedded class device
2215  * @buf - the buffer returned
2216  *
2217  * A sysfs 'read-only' shost attribute.
2218  */
2219 static ssize_t
2220 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2221     char *buf)
2222 {
2223         struct Scsi_Host *shost = class_to_shost(cdev);
2224         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2225
2226         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2227 }
2228 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2229
2230 /**
2231  * _ctl_board_assembly_show - board assembly name
2232  * @cdev - pointer to embedded class device
2233  * @buf - the buffer returned
2234  *
2235  * A sysfs 'read-only' shost attribute.
2236  */
2237 static ssize_t
2238 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2239     char *buf)
2240 {
2241         struct Scsi_Host *shost = class_to_shost(cdev);
2242         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2243
2244         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2245 }
2246 static DEVICE_ATTR(board_assembly, S_IRUGO,
2247     _ctl_board_assembly_show, NULL);
2248
2249 /**
2250  * _ctl_board_tracer_show - board tracer number
2251  * @cdev - pointer to embedded class device
2252  * @buf - the buffer returned
2253  *
2254  * A sysfs 'read-only' shost attribute.
2255  */
2256 static ssize_t
2257 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2258     char *buf)
2259 {
2260         struct Scsi_Host *shost = class_to_shost(cdev);
2261         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2262
2263         return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2264 }
2265 static DEVICE_ATTR(board_tracer, S_IRUGO,
2266     _ctl_board_tracer_show, NULL);
2267
2268 /**
2269  * _ctl_io_delay_show - io missing delay
2270  * @cdev - pointer to embedded class device
2271  * @buf - the buffer returned
2272  *
2273  * This is for firmware implemention for deboucing device
2274  * removal events.
2275  *
2276  * A sysfs 'read-only' shost attribute.
2277  */
2278 static ssize_t
2279 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2280     char *buf)
2281 {
2282         struct Scsi_Host *shost = class_to_shost(cdev);
2283         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2284
2285         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2286 }
2287 static DEVICE_ATTR(io_delay, S_IRUGO,
2288     _ctl_io_delay_show, NULL);
2289
2290 /**
2291  * _ctl_device_delay_show - device missing delay
2292  * @cdev - pointer to embedded class device
2293  * @buf - the buffer returned
2294  *
2295  * This is for firmware implemention for deboucing device
2296  * removal events.
2297  *
2298  * A sysfs 'read-only' shost attribute.
2299  */
2300 static ssize_t
2301 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2302     char *buf)
2303 {
2304         struct Scsi_Host *shost = class_to_shost(cdev);
2305         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2306
2307         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2308 }
2309 static DEVICE_ATTR(device_delay, S_IRUGO,
2310     _ctl_device_delay_show, NULL);
2311
2312 /**
2313  * _ctl_fw_queue_depth_show - global credits
2314  * @cdev - pointer to embedded class device
2315  * @buf - the buffer returned
2316  *
2317  * This is firmware queue depth limit
2318  *
2319  * A sysfs 'read-only' shost attribute.
2320  */
2321 static ssize_t
2322 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2323     char *buf)
2324 {
2325         struct Scsi_Host *shost = class_to_shost(cdev);
2326         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2327
2328         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2329 }
2330 static DEVICE_ATTR(fw_queue_depth, S_IRUGO,
2331     _ctl_fw_queue_depth_show, NULL);
2332
2333 /**
2334  * _ctl_sas_address_show - sas address
2335  * @cdev - pointer to embedded class device
2336  * @buf - the buffer returned
2337  *
2338  * This is the controller sas address
2339  *
2340  * A sysfs 'read-only' shost attribute.
2341  */
2342 static ssize_t
2343 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2344     char *buf)
2345 {
2346         struct Scsi_Host *shost = class_to_shost(cdev);
2347         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2348
2349         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2350             (unsigned long long)ioc->sas_hba.sas_address);
2351 }
2352 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2353     _ctl_host_sas_address_show, NULL);
2354
2355 /**
2356  * _ctl_logging_level_show - logging level
2357  * @cdev - pointer to embedded class device
2358  * @buf - the buffer returned
2359  *
2360  * A sysfs 'read/write' shost attribute.
2361  */
2362 static ssize_t
2363 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2364     char *buf)
2365 {
2366         struct Scsi_Host *shost = class_to_shost(cdev);
2367         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2368
2369         return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2370 }
2371 static ssize_t
2372 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2373     const char *buf, size_t count)
2374 {
2375         struct Scsi_Host *shost = class_to_shost(cdev);
2376         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2377         int val = 0;
2378
2379         if (sscanf(buf, "%x", &val) != 1)
2380                 return -EINVAL;
2381
2382         ioc->logging_level = val;
2383         printk(MPT2SAS_INFO_FMT "logging_level=%08xh\n", ioc->name,
2384             ioc->logging_level);
2385         return strlen(buf);
2386 }
2387 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
2388     _ctl_logging_level_show, _ctl_logging_level_store);
2389
2390 struct device_attribute *mpt2sas_host_attrs[] = {
2391         &dev_attr_version_fw,
2392         &dev_attr_version_bios,
2393         &dev_attr_version_mpi,
2394         &dev_attr_version_product,
2395         &dev_attr_version_nvdata_persistent,
2396         &dev_attr_version_nvdata_default,
2397         &dev_attr_board_name,
2398         &dev_attr_board_assembly,
2399         &dev_attr_board_tracer,
2400         &dev_attr_io_delay,
2401         &dev_attr_device_delay,
2402         &dev_attr_logging_level,
2403         &dev_attr_fw_queue_depth,
2404         &dev_attr_host_sas_address,
2405         NULL,
2406 };
2407
2408 /* device attributes */
2409
2410 /**
2411  * _ctl_device_sas_address_show - sas address
2412  * @cdev - pointer to embedded class device
2413  * @buf - the buffer returned
2414  *
2415  * This is the sas address for the target
2416  *
2417  * A sysfs 'read-only' shost attribute.
2418  */
2419 static ssize_t
2420 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
2421     char *buf)
2422 {
2423         struct scsi_device *sdev = to_scsi_device(dev);
2424         struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2425
2426         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2427             (unsigned long long)sas_device_priv_data->sas_target->sas_address);
2428 }
2429 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
2430
2431 /**
2432  * _ctl_device_handle_show - device handle
2433  * @cdev - pointer to embedded class device
2434  * @buf - the buffer returned
2435  *
2436  * This is the firmware assigned device handle
2437  *
2438  * A sysfs 'read-only' shost attribute.
2439  */
2440 static ssize_t
2441 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
2442     char *buf)
2443 {
2444         struct scsi_device *sdev = to_scsi_device(dev);
2445         struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2446
2447         return snprintf(buf, PAGE_SIZE, "0x%04x\n",
2448             sas_device_priv_data->sas_target->handle);
2449 }
2450 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
2451
2452 struct device_attribute *mpt2sas_dev_attrs[] = {
2453         &dev_attr_sas_address,
2454         &dev_attr_sas_device_handle,
2455         NULL,
2456 };
2457
2458 static const struct file_operations ctl_fops = {
2459         .owner = THIS_MODULE,
2460         .unlocked_ioctl = _ctl_ioctl,
2461         .release = _ctl_release,
2462         .poll = _ctl_poll,
2463         .fasync = _ctl_fasync,
2464 #ifdef CONFIG_COMPAT
2465         .compat_ioctl = _ctl_ioctl_compat,
2466 #endif
2467 };
2468
2469 static struct miscdevice ctl_dev = {
2470         .minor  = MPT2SAS_MINOR,
2471         .name   = MPT2SAS_DEV_NAME,
2472         .fops   = &ctl_fops,
2473 };
2474
2475 /**
2476  * mpt2sas_ctl_init - main entry point for ctl.
2477  *
2478  */
2479 void
2480 mpt2sas_ctl_init(void)
2481 {
2482         async_queue = NULL;
2483         if (misc_register(&ctl_dev) < 0)
2484                 printk(KERN_ERR "%s can't register misc device [minor=%d]\n",
2485                     MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
2486
2487         init_waitqueue_head(&ctl_poll_wait);
2488 }
2489
2490 /**
2491  * mpt2sas_ctl_exit - exit point for ctl
2492  *
2493  */
2494 void
2495 mpt2sas_ctl_exit(void)
2496 {
2497         struct MPT2SAS_ADAPTER *ioc;
2498         int i;
2499
2500         list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
2501
2502                 /* free memory associated to diag buffers */
2503                 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
2504                         if (!ioc->diag_buffer[i])
2505                                 continue;
2506                         pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
2507                             ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
2508                         ioc->diag_buffer[i] = NULL;
2509                         ioc->diag_buffer_status[i] = 0;
2510                 }
2511
2512                 kfree(ioc->event_log);
2513         }
2514         misc_deregister(&ctl_dev);
2515 }
2516