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         _mpt3sas_raise_sigio(ioc, event_data);
 136
 137         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 138                                          __func__));
 139 }
 140
 141 /**
 142  * mpt3sas_trigger_master - Master trigger handler
 143  * @ioc: per adapter object
 144  * @trigger_bitmask:
 145  *
 146  */
 147 void
 148 mpt3sas_trigger_master(struct MPT3SAS_ADAPTER *ioc, u32 trigger_bitmask)
 149 {
 150         struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
 151         unsigned long flags;
 152         u8 found_match = 0;
 153
 154         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
 155
 156         if (trigger_bitmask & MASTER_TRIGGER_FW_FAULT ||
 157             trigger_bitmask & MASTER_TRIGGER_ADAPTER_RESET)
 158                 goto by_pass_checks;
 159
 160         /* check to see if trace buffers are currently registered */
 161         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 162             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
 163                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 164                 return;
 165         }
 166
 167         /* check to see if trace buffers are currently released */
 168         if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 169             MPT3_DIAG_BUFFER_IS_RELEASED) {
 170                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 171                 return;
 172         }
 173
 174  by_pass_checks:
 175
 176         dTriggerDiagPrintk(ioc,
 177                            ioc_info(ioc, "%s: enter - trigger_bitmask = 0x%08x\n",
 178                                     __func__, trigger_bitmask));
 179
 180         /* don't send trigger if an trigger is currently active */
 181         if (ioc->diag_trigger_active) {
 182                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 183                 goto out;
 184         }
 185
 186         /* check for the trigger condition */
 187         if (ioc->diag_trigger_master.MasterData & trigger_bitmask) {
 188                 found_match = 1;
 189                 ioc->diag_trigger_active = 1;
 190                 dTriggerDiagPrintk(ioc,
 191                                    ioc_info(ioc, "%s: setting diag_trigger_active flag\n",
 192                                             __func__));
 193         }
 194         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 195
 196         if (!found_match)
 197                 goto out;
 198
 199         memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
 200         event_data.trigger_type = MPT3SAS_TRIGGER_MASTER;
 201         event_data.u.master.MasterData = trigger_bitmask;
 202
 203         if (trigger_bitmask & MASTER_TRIGGER_FW_FAULT ||
 204             trigger_bitmask & MASTER_TRIGGER_ADAPTER_RESET)
 205                 _mpt3sas_raise_sigio(ioc, &event_data);
 206         else
 207                 mpt3sas_send_trigger_data_event(ioc, &event_data);
 208
 209  out:
 210         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 211                                          __func__));
 212 }
 213
 214 /**
 215  * mpt3sas_trigger_event - Event trigger handler
 216  * @ioc: per adapter object
 217  * @event: ?
 218  * @log_entry_qualifier: ?
 219  *
 220  */
 221 void
 222 mpt3sas_trigger_event(struct MPT3SAS_ADAPTER *ioc, u16 event,
 223         u16 log_entry_qualifier)
 224 {
 225         struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
 226         struct SL_WH_EVENT_TRIGGER_T *event_trigger;
 227         int i;
 228         unsigned long flags;
 229         u8 found_match;
 230
 231         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
 232
 233         /* check to see if trace buffers are currently registered */
 234         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 235             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
 236                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 237                 return;
 238         }
 239
 240         /* check to see if trace buffers are currently released */
 241         if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 242             MPT3_DIAG_BUFFER_IS_RELEASED) {
 243                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 244                 return;
 245         }
 246
 247         dTriggerDiagPrintk(ioc,
 248                            ioc_info(ioc, "%s: enter - event = 0x%04x, log_entry_qualifier = 0x%04x\n",
 249                                     __func__, event, log_entry_qualifier));
 250
 251         /* don't send trigger if an trigger is currently active */
 252         if (ioc->diag_trigger_active) {
 253                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 254                 goto out;
 255         }
 256
 257         /* check for the trigger condition */
 258         event_trigger = ioc->diag_trigger_event.EventTriggerEntry;
 259         for (i = 0 , found_match = 0; i < ioc->diag_trigger_event.ValidEntries
 260             && !found_match; i++, event_trigger++) {
 261                 if (event_trigger->EventValue != event)
 262                         continue;
 263                 if (event == MPI2_EVENT_LOG_ENTRY_ADDED) {
 264                         if (event_trigger->LogEntryQualifier ==
 265                             log_entry_qualifier)
 266                                 found_match = 1;
 267                         continue;
 268                 }
 269                 found_match = 1;
 270                 ioc->diag_trigger_active = 1;
 271                 dTriggerDiagPrintk(ioc,
 272                                    ioc_info(ioc, "%s: setting diag_trigger_active flag\n",
 273                                             __func__));
 274         }
 275         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 276
 277         if (!found_match)
 278                 goto out;
 279
 280         dTriggerDiagPrintk(ioc,
 281                            ioc_info(ioc, "%s: setting diag_trigger_active flag\n",
 282                                     __func__));
 283         memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
 284         event_data.trigger_type = MPT3SAS_TRIGGER_EVENT;
 285         event_data.u.event.EventValue = event;
 286         event_data.u.event.LogEntryQualifier = log_entry_qualifier;
 287         mpt3sas_send_trigger_data_event(ioc, &event_data);
 288  out:
 289         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 290                                          __func__));
 291 }
 292
 293 /**
 294  * mpt3sas_trigger_scsi - SCSI trigger handler
 295  * @ioc: per adapter object
 296  * @sense_key: ?
 297  * @asc: ?
 298  * @ascq: ?
 299  *
 300  */
 301 void
 302 mpt3sas_trigger_scsi(struct MPT3SAS_ADAPTER *ioc, u8 sense_key, u8 asc,
 303         u8 ascq)
 304 {
 305         struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
 306         struct SL_WH_SCSI_TRIGGER_T *scsi_trigger;
 307         int i;
 308         unsigned long flags;
 309         u8 found_match;
 310
 311         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
 312
 313         /* check to see if trace buffers are currently registered */
 314         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 315             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
 316                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 317                 return;
 318         }
 319
 320         /* check to see if trace buffers are currently released */
 321         if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 322             MPT3_DIAG_BUFFER_IS_RELEASED) {
 323                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 324                 return;
 325         }
 326
 327         dTriggerDiagPrintk(ioc,
 328                            ioc_info(ioc, "%s: enter - sense_key = 0x%02x, asc = 0x%02x, ascq = 0x%02x\n",
 329                                     __func__, sense_key, asc, ascq));
 330
 331         /* don't send trigger if an trigger is currently active */
 332         if (ioc->diag_trigger_active) {
 333                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 334                 goto out;
 335         }
 336
 337         /* check for the trigger condition */
 338         scsi_trigger = ioc->diag_trigger_scsi.SCSITriggerEntry;
 339         for (i = 0 , found_match = 0; i < ioc->diag_trigger_scsi.ValidEntries
 340             && !found_match; i++, scsi_trigger++) {
 341                 if (scsi_trigger->SenseKey != sense_key)
 342                         continue;
 343                 if (!(scsi_trigger->ASC == 0xFF || scsi_trigger->ASC == asc))
 344                         continue;
 345                 if (!(scsi_trigger->ASCQ == 0xFF || scsi_trigger->ASCQ == ascq))
 346                         continue;
 347                 found_match = 1;
 348                 ioc->diag_trigger_active = 1;
 349         }
 350         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 351
 352         if (!found_match)
 353                 goto out;
 354
 355         dTriggerDiagPrintk(ioc,
 356                            ioc_info(ioc, "%s: setting diag_trigger_active flag\n",
 357                                     __func__));
 358         memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
 359         event_data.trigger_type = MPT3SAS_TRIGGER_SCSI;
 360         event_data.u.scsi.SenseKey = sense_key;
 361         event_data.u.scsi.ASC = asc;
 362         event_data.u.scsi.ASCQ = ascq;
 363         mpt3sas_send_trigger_data_event(ioc, &event_data);
 364  out:
 365         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 366                                          __func__));
 367 }
 368
 369 /**
 370  * mpt3sas_trigger_mpi - MPI trigger handler
 371  * @ioc: per adapter object
 372  * @ioc_status: ?
 373  * @loginfo: ?
 374  *
 375  */
 376 void
 377 mpt3sas_trigger_mpi(struct MPT3SAS_ADAPTER *ioc, u16 ioc_status, u32 loginfo)
 378 {
 379         struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
 380         struct SL_WH_MPI_TRIGGER_T *mpi_trigger;
 381         int i;
 382         unsigned long flags;
 383         u8 found_match;
 384
 385         spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
 386
 387         /* check to see if trace buffers are currently registered */
 388         if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 389             MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
 390                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 391                 return;
 392         }
 393
 394         /* check to see if trace buffers are currently released */
 395         if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
 396             MPT3_DIAG_BUFFER_IS_RELEASED) {
 397                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 398                 return;
 399         }
 400
 401         dTriggerDiagPrintk(ioc,
 402                            ioc_info(ioc, "%s: enter - ioc_status = 0x%04x, loginfo = 0x%08x\n",
 403                                     __func__, ioc_status, loginfo));
 404
 405         /* don't send trigger if an trigger is currently active */
 406         if (ioc->diag_trigger_active) {
 407                 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 408                 goto out;
 409         }
 410
 411         /* check for the trigger condition */
 412         mpi_trigger = ioc->diag_trigger_mpi.MPITriggerEntry;
 413         for (i = 0 , found_match = 0; i < ioc->diag_trigger_mpi.ValidEntries
 414             && !found_match; i++, mpi_trigger++) {
 415                 if (mpi_trigger->IOCStatus != ioc_status)
 416                         continue;
 417                 if (!(mpi_trigger->IocLogInfo == 0xFFFFFFFF ||
 418                     mpi_trigger->IocLogInfo == loginfo))
 419                         continue;
 420                 found_match = 1;
 421                 ioc->diag_trigger_active = 1;
 422         }
 423         spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
 424
 425         if (!found_match)
 426                 goto out;
 427
 428         dTriggerDiagPrintk(ioc,
 429                            ioc_info(ioc, "%s: setting diag_trigger_active flag\n",
 430                                     __func__));
 431         memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
 432         event_data.trigger_type = MPT3SAS_TRIGGER_MPI;
 433         event_data.u.mpi.IOCStatus = ioc_status;
 434         event_data.u.mpi.IocLogInfo = loginfo;
 435         mpt3sas_send_trigger_data_event(ioc, &event_data);
 436  out:
 437         dTriggerDiagPrintk(ioc, ioc_info(ioc, "%s: exit\n",
 438                                          __func__));
 439 }