drivers/scsi/mpt3sas/mpt3sas_trigger_diag.c

   1 /*
   2  * This module provides common API to set Diagnostic trigger for MPT
   3  * (Message Passing Technology) based controllers
   4  *
   5  * This code is based on drivers/scsi/mpt3sas/mpt3sas_trigger_diag.c
   6  * Copyright (C) 2012-2014  LSI Corporation
   7  * Copyright (C) 2013-2014 Avago Technologies
   8  *  (mailto: MPT-FusionLinux.pdl@avagotech.com)
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * NO WARRANTY
  21  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  22  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  23  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  24  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  25  * solely responsible for determining the appropriateness of using and
  26  * distributing the Program and assumes all risks associated with its
  27  * exercise of rights under this Agreement, including but not limited to
  28  * the risks and costs of program errors, damage to or loss of data,
  29  * programs or equipment, and unavailability or interruption of operations.
  30
  31  * DISCLAIMER OF LIABILITY
  32  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  33  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  35  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  36  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  37  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  38  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  39
  40  * You should have received a copy of the GNU General Public License
  41  * along with this program; if not, write to the Free Software
  42  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  43  * USA.
  44  */
  45
  46 #include <linux/kernel.h>
  47 #include <linux/module.h>
  48 #include <linux/errno.h>
  49 #include <linux/init.h>
  50 #include <linux/slab.h>
  51 #include <linux/types.h>
  52 #include <linux/pci.h>
  53 #include <linux/delay.h>
  54 #include <linux/compat.h>
  55 #include <linux/poll.h>
  56
  57 #include <linux/io.h>
  58 #include <linux/uaccess.h>
  59
  60 #include "mpt3sas_base.h"
  61
  62 /**
  63  * _mpt3sas_raise_sigio - notifiy app
  64  * @ioc: per adapter object
  65  * @event_data: ?
  66  */
  67 static void
  68 _mpt3sas_raise_sigio(struct MPT3SAS_ADAPTER *ioc,
  69         struct SL_WH_TRIGGERS_EVENT_DATA_T *event_data)
  70 {
  71         Mpi2EventNotificationReply_t *mpi_reply;
  72         u16 sz, event_data_sz;
  73         unsigned long flags;
  74
  75         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: enter\n", __func__));
  76
  77         sz = offsetof(Mpi2EventNotificationReply_t, EventData) +
  78             sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T) + 4;
  79         mpi_reply = kzalloc(sz, GFP_KERNEL);
  80         if (!mpi_reply)
  81                 goto out;
  82         mpi_reply->Event = cpu_to_le16(MPI3_EVENT_DIAGNOSTIC_TRIGGER_FIRED);
  83         event_data_sz = (sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T) + 4) / 4;
  84         mpi_reply->EventDataLength = cpu_to_le16(event_data_sz);
  85         memcpy(&mpi_reply->EventData, event_data,
  86             sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
  87         dTriggerDiagPrintk(ioc,
  88                            ioc_info(ioc, "%s: add to driver event log\n",
  89                                     __func__));
  90         mpt3sas_ctl_add_to_event_log(ioc, mpi_reply);
  91         kfree(mpi_reply);
  92  out:
  93
  94         /* clearing the diag_trigger_active flag */
  95         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
  96         dTriggerDiagPrintk(ioc,
  97                            ioc_info(ioc, "%s: clearing diag_trigger_active flag\n",
  98                                     __func__));
  99         ioc->diag_trigger_active = 0;
 100         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 101
 102         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 103                                          __func__));
 104 }
 105
 106 /**
 107  * mpt3sas_process_trigger_data - process the event data for the trigger
 108  * @ioc: per adapter object
 109  * @event_data: ?
 110  */
 111 void
 112 mpt3sas_process_trigger_data(struct MPT3SAS_ADAPTER *ioc,
 113         struct SL_WH_TRIGGERS_EVENT_DATA_T *event_data)
 114 {
 115         u8 issue_reset = 0;
 116         u32 *trig_data = (u32 *)&event_data->u.master;
 117
 118         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: enter\n", __func__));
 119
 120         /* release the diag buffer trace */
 121         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 122             MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
 123                 /*
 124                  * add a log message so that user knows which event caused
 125                  * the release
 126                  */
 127                 ioc_info(ioc,
 128                     "%s: Releasing the trace buffer. Trigger_Type 0x%08x, Data[0] 0x%08x, Data[1] 0x%08x\n",
 129                     __func__, event_data->trigger_type,
 130                     trig_data[0], trig_data[1]);
 131                 mpt3sas_send_diag_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE,
 132                     &issue_reset);
 133         }
 134
 135         ioc->htb_rel.buffer_rel_condition = MPT3_DIAG_BUFFER_REL_TRIGGER;
 136         if (event_data) {
 137                 ioc->htb_rel.trigger_type = event_data->trigger_type;
 138                 switch (event_data->trigger_type) {
 139                 case MPT3SAS_TRIGGER_SCSI:
 140                         memcpy(&ioc->htb_rel.trigger_info_dwords,
 141                             &event_data->u.scsi,
 142                             sizeof(struct SL_WH_SCSI_TRIGGER_T));
 143                         break;
 144                 case MPT3SAS_TRIGGER_MPI:
 145                         memcpy(&ioc->htb_rel.trigger_info_dwords,
 146                             &event_data->u.mpi,
 147                             sizeof(struct SL_WH_MPI_TRIGGER_T));
 148                         break;
 149                 case MPT3SAS_TRIGGER_MASTER:
 150                         ioc->htb_rel.trigger_info_dwords[0] =
 151                             event_data->u.master.MasterData;
 152                         break;
 153                 case MPT3SAS_TRIGGER_EVENT:
 154                         memcpy(&ioc->htb_rel.trigger_info_dwords,
 155                             &event_data->u.event,
 156                             sizeof(struct SL_WH_EVENT_TRIGGER_T));
 157                         break;
 158                 default:
 159                         ioc_err(ioc, "%d - Is not a valid Trigger type\n",
 160                             event_data->trigger_type);
 161                         break;
 162                 }
 163         }
 164         _mpt3sas_raise_sigio(ioc, event_data);
 165
 166         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 167                                          __func__));
 168 }
 169
 170 /**
 171  * mpt3sas_trigger_master - Master trigger handler
 172  * @ioc: per adapter object
 173  * @trigger_bitmask:
 174  *
 175  */
 176 void
 177 mpt3sas_trigger_master(struct MPT3SAS_ADAPTER *ioc, u32 trigger_bitmask)
 178 {
 179         struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
 180         unsigned long flags;
 181         u8 found_match = 0;
 182
 183         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
 184
 185         if (trigger_bitmask & MASTER_TRIGGER_FW_FAULT ||
 186             trigger_bitmask & MASTER_TRIGGER_ADAPTER_RESET)
 187                 goto by_pass_checks;
 188
 189         /* check to see if trace buffers are currently registered */
 190         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 191             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
 192                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 193                 return;
 194         }
 195
 196         /* check to see if trace buffers are currently released */
 197         if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 198             MPT3_DIAG_BUFFER_IS_RELEASED) {
 199                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 200                 return;
 201         }
 202
 203  by_pass_checks:
 204
 205         dTriggerDiagPrintk(ioc,
 206                            ioc_info(ioc, "%s: enter - trigger_bitmask = 0x%08x\n",
 207                                     __func__, trigger_bitmask));
 208
 209         /* don't send trigger if an trigger is currently active */
 210         if (ioc->diag_trigger_active) {
 211                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 212                 goto out;
 213         }
 214
 215         /* check for the trigger condition */
 216         if (ioc->diag_trigger_master.MasterData & trigger_bitmask) {
 217                 found_match = 1;
 218                 ioc->diag_trigger_active = 1;
 219                 dTriggerDiagPrintk(ioc,
 220                                    ioc_info(ioc, "%s: setting diag_trigger_active flag\n",
 221                                             __func__));
 222         }
 223         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 224
 225         if (!found_match)
 226                 goto out;
 227
 228         memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
 229         event_data.trigger_type = MPT3SAS_TRIGGER_MASTER;
 230         event_data.u.master.MasterData = trigger_bitmask;
 231
 232         if (trigger_bitmask & MASTER_TRIGGER_FW_FAULT ||
 233             trigger_bitmask & MASTER_TRIGGER_ADAPTER_RESET) {
 234                 ioc->htb_rel.trigger_type = MPT3SAS_TRIGGER_MASTER;
 235                 ioc->htb_rel.trigger_info_dwords[0] = trigger_bitmask;
 236                 if (ioc->reset_from_user)
 237                         ioc->htb_rel.trigger_info_dwords[1] =
 238                             MPT_DIAG_RESET_ISSUED_BY_USER;
 239                 _mpt3sas_raise_sigio(ioc, &event_data);
 240         } else
 241                 mpt3sas_send_trigger_data_event(ioc, &event_data);
 242
 243  out:
 244         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 245                                          __func__));
 246 }
 247
 248 /**
 249  * mpt3sas_trigger_event - Event trigger handler
 250  * @ioc: per adapter object
 251  * @event: ?
 252  * @log_entry_qualifier: ?
 253  *
 254  */
 255 void
 256 mpt3sas_trigger_event(struct MPT3SAS_ADAPTER *ioc, u16 event,
 257         u16 log_entry_qualifier)
 258 {
 259         struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
 260         struct SL_WH_EVENT_TRIGGER_T *event_trigger;
 261         int i;
 262         unsigned long flags;
 263         u8 found_match;
 264
 265         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
 266
 267         /* check to see if trace buffers are currently registered */
 268         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 269             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
 270                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 271                 return;
 272         }
 273
 274         /* check to see if trace buffers are currently released */
 275         if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 276             MPT3_DIAG_BUFFER_IS_RELEASED) {
 277                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 278                 return;
 279         }
 280
 281         dTriggerDiagPrintk(ioc,
 282                            ioc_info(ioc, "%s: enter - event = 0x%04x, log_entry_qualifier = 0x%04x\n",
 283                                     __func__, event, log_entry_qualifier));
 284
 285         /* don't send trigger if an trigger is currently active */
 286         if (ioc->diag_trigger_active) {
 287                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 288                 goto out;
 289         }
 290
 291         /* check for the trigger condition */
 292         event_trigger = ioc->diag_trigger_event.EventTriggerEntry;
 293         for (i = 0 , found_match = 0; i < ioc->diag_trigger_event.ValidEntries
 294             && !found_match; i++, event_trigger++) {
 295                 if (event_trigger->EventValue != event)
 296                         continue;
 297                 if (event == MPI2_EVENT_LOG_ENTRY_ADDED) {
 298                         if (event_trigger->LogEntryQualifier ==
 299                             log_entry_qualifier)
 300                                 found_match = 1;
 301                         continue;
 302                 }
 303                 found_match = 1;
 304                 ioc->diag_trigger_active = 1;
 305                 dTriggerDiagPrintk(ioc,
 306                                    ioc_info(ioc, "%s: setting diag_trigger_active flag\n",
 307                                             __func__));
 308         }
 309         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 310
 311         if (!found_match)
 312                 goto out;
 313
 314         dTriggerDiagPrintk(ioc,
 315                            ioc_info(ioc, "%s: setting diag_trigger_active flag\n",
 316                                     __func__));
 317         memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
 318         event_data.trigger_type = MPT3SAS_TRIGGER_EVENT;
 319         event_data.u.event.EventValue = event;
 320         event_data.u.event.LogEntryQualifier = log_entry_qualifier;
 321         mpt3sas_send_trigger_data_event(ioc, &event_data);
 322  out:
 323         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 324                                          __func__));
 325 }
 326
 327 /**
 328  * mpt3sas_trigger_scsi - SCSI trigger handler
 329  * @ioc: per adapter object
 330  * @sense_key: ?
 331  * @asc: ?
 332  * @ascq: ?
 333  *
 334  */
 335 void
 336 mpt3sas_trigger_scsi(struct MPT3SAS_ADAPTER *ioc, u8 sense_key, u8 asc,
 337         u8 ascq)
 338 {
 339         struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
 340         struct SL_WH_SCSI_TRIGGER_T *scsi_trigger;
 341         int i;
 342         unsigned long flags;
 343         u8 found_match;
 344
 345         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
 346
 347         /* check to see if trace buffers are currently registered */
 348         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 349             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
 350                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 351                 return;
 352         }
 353
 354         /* check to see if trace buffers are currently released */
 355         if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 356             MPT3_DIAG_BUFFER_IS_RELEASED) {
 357                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 358                 return;
 359         }
 360
 361         dTriggerDiagPrintk(ioc,
 362                            ioc_info(ioc, "%s: enter - sense_key = 0x%02x, asc = 0x%02x, ascq = 0x%02x\n",
 363                                     __func__, sense_key, asc, ascq));
 364
 365         /* don't send trigger if an trigger is currently active */
 366         if (ioc->diag_trigger_active) {
 367                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 368                 goto out;
 369         }
 370
 371         /* check for the trigger condition */
 372         scsi_trigger = ioc->diag_trigger_scsi.SCSITriggerEntry;
 373         for (i = 0 , found_match = 0; i < ioc->diag_trigger_scsi.ValidEntries
 374             && !found_match; i++, scsi_trigger++) {
 375                 if (scsi_trigger->SenseKey != sense_key)
 376                         continue;
 377                 if (!(scsi_trigger->ASC == 0xFF || scsi_trigger->ASC == asc))
 378                         continue;
 379                 if (!(scsi_trigger->ASCQ == 0xFF || scsi_trigger->ASCQ == ascq))
 380                         continue;
 381                 found_match = 1;
 382                 ioc->diag_trigger_active = 1;
 383         }
 384         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 385
 386         if (!found_match)
 387                 goto out;
 388
 389         dTriggerDiagPrintk(ioc,
 390                            ioc_info(ioc, "%s: setting diag_trigger_active flag\n",
 391                                     __func__));
 392         memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
 393         event_data.trigger_type = MPT3SAS_TRIGGER_SCSI;
 394         event_data.u.scsi.SenseKey = sense_key;
 395         event_data.u.scsi.ASC = asc;
 396         event_data.u.scsi.ASCQ = ascq;
 397         mpt3sas_send_trigger_data_event(ioc, &event_data);
 398  out:
 399         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 400                                          __func__));
 401 }
 402
 403 /**
 404  * mpt3sas_trigger_mpi - MPI trigger handler
 405  * @ioc: per adapter object
 406  * @ioc_status: ?
 407  * @loginfo: ?
 408  *
 409  */
 410 void
 411 mpt3sas_trigger_mpi(struct MPT3SAS_ADAPTER *ioc, u16 ioc_status, u32 loginfo)
 412 {
 413         struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
 414         struct SL_WH_MPI_TRIGGER_T *mpi_trigger;
 415         int i;
 416         unsigned long flags;
 417         u8 found_match;
 418
 419         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
 420
 421         /* check to see if trace buffers are currently registered */
 422         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 423             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
 424                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 425                 return;
 426         }
 427
 428         /* check to see if trace buffers are currently released */
 429         if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 430             MPT3_DIAG_BUFFER_IS_RELEASED) {
 431                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 432                 return;
 433         }
 434
 435         dTriggerDiagPrintk(ioc,
 436                            ioc_info(ioc, "%s: enter - ioc_status = 0x%04x, loginfo = 0x%08x\n",
 437                                     __func__, ioc_status, loginfo));
 438
 439         /* don't send trigger if an trigger is currently active */
 440         if (ioc->diag_trigger_active) {
 441                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 442                 goto out;
 443         }
 444
 445         /* check for the trigger condition */
 446         mpi_trigger = ioc->diag_trigger_mpi.MPITriggerEntry;
 447         for (i = 0 , found_match = 0; i < ioc->diag_trigger_mpi.ValidEntries
 448             && !found_match; i++, mpi_trigger++) {
 449                 if (mpi_trigger->IOCStatus != ioc_status)
 450                         continue;
 451                 if (!(mpi_trigger->IocLogInfo == 0xFFFFFFFF ||
 452                     mpi_trigger->IocLogInfo == loginfo))
 453                         continue;
 454                 found_match = 1;
 455                 ioc->diag_trigger_active = 1;
 456         }
 457         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 458
 459         if (!found_match)
 460                 goto out;
 461
 462         dTriggerDiagPrintk(ioc,
 463                            ioc_info(ioc, "%s: setting diag_trigger_active flag\n",
 464                                     __func__));
 465         memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
 466         event_data.trigger_type = MPT3SAS_TRIGGER_MPI;
 467         event_data.u.mpi.IOCStatus = ioc_status;
 468         event_data.u.mpi.IocLogInfo = loginfo;
 469         mpt3sas_send_trigger_data_event(ioc, &event_data);
 470  out:
 471         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 472                                          __func__));
 473 }