drivers/message/fusion/mptscsih.c

   1 /*
   2  *  linux/drivers/message/fusion/mptscsih.c
   3  *      For use with LSI PCI chip/adapter(s)
   4  *      running LSI Fusion MPT (Message Passing Technology) firmware.
   5  *
   6  *  Copyright (c) 1999-2008 LSI Corporation
   7  *  (mailto:DL-MPTFusionLinux@lsi.com)
   8  *
   9  */
  10 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
  11 /*
  12     This program is free software; you can redistribute it and/or modify
  13     it under the terms of the GNU General Public License as published by
  14     the Free Software Foundation; version 2 of the License.
  15
  16     This program is distributed in the hope that it will be useful,
  17     but WITHOUT ANY WARRANTY; without even the implied warranty of
  18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19     GNU General Public License for more details.
  20
  21     NO WARRANTY
  22     THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  23     CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  24     LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  25     MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  26     solely responsible for determining the appropriateness of using and
  27     distributing the Program and assumes all risks associated with its
  28     exercise of rights under this Agreement, including but not limited to
  29     the risks and costs of program errors, damage to or loss of data,
  30     programs or equipment, and unavailability or interruption of operations.
  31
  32     DISCLAIMER OF LIABILITY
  33     NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  34     DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  35     DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  36     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  37     TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  38     USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  39     HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  40
  41     You should have received a copy of the GNU General Public License
  42     along with this program; if not, write to the Free Software
  43     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  44 */
  45 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
  46
  47 #include <linux/module.h>
  48 #include <linux/kernel.h>
  49 #include <linux/init.h>
  50 #include <linux/errno.h>
  51 #include <linux/kdev_t.h>
  52 #include <linux/blkdev.h>
  53 #include <linux/delay.h>        /* for mdelay */
  54 #include <linux/interrupt.h>    /* needed for in_interrupt() proto */
  55 #include <linux/reboot.h>       /* notifier code */
  56 #include <linux/workqueue.h>
  57
  58 #include <scsi/scsi.h>
  59 #include <scsi/scsi_cmnd.h>
  60 #include <scsi/scsi_device.h>
  61 #include <scsi/scsi_host.h>
  62 #include <scsi/scsi_tcq.h>
  63 #include <scsi/scsi_dbg.h>
  64
  65 #include "mptbase.h"
  66 #include "mptscsih.h"
  67 #include "lsi/mpi_log_sas.h"
  68
  69 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
  70 #define my_NAME         "Fusion MPT SCSI Host driver"
  71 #define my_VERSION      MPT_LINUX_VERSION_COMMON
  72 #define MYNAM           "mptscsih"
  73
  74 MODULE_AUTHOR(MODULEAUTHOR);
  75 MODULE_DESCRIPTION(my_NAME);
  76 MODULE_LICENSE("GPL");
  77 MODULE_VERSION(my_VERSION);
  78
  79 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
  80 /*
  81  *  Other private/forward protos...
  82  */
  83 static struct scsi_cmnd * mptscsih_get_scsi_lookup(MPT_ADAPTER *ioc, int i);
  84 static struct scsi_cmnd * mptscsih_getclear_scsi_lookup(MPT_ADAPTER *ioc, int i);
  85 static void     mptscsih_set_scsi_lookup(MPT_ADAPTER *ioc, int i, struct scsi_cmnd *scmd);
  86 static int      SCPNT_TO_LOOKUP_IDX(MPT_ADAPTER *ioc, struct scsi_cmnd *scmd);
  87 int             mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
  88 static void     mptscsih_report_queue_full(struct scsi_cmnd *sc, SCSIIOReply_t *pScsiReply, SCSIIORequest_t *pScsiReq);
  89 int             mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
  90
  91 static int      mptscsih_AddSGE(MPT_ADAPTER *ioc, struct scsi_cmnd *SCpnt,
  92                                  SCSIIORequest_t *pReq, int req_idx);
  93 static void     mptscsih_freeChainBuffers(MPT_ADAPTER *ioc, int req_idx);
  94 static void     mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR *mf, SCSIIOReply_t *pScsiReply);
  95 static int      mptscsih_tm_pending_wait(MPT_SCSI_HOST * hd);
  96 static int      mptscsih_tm_wait_for_completion(MPT_SCSI_HOST * hd, ulong timeout );
  97
  98 static int      mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun, int ctx2abort, ulong timeout);
  99
 100 int             mptscsih_ioc_reset(MPT_ADAPTER *ioc, int post_reset);
 101 int             mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply);
 102
 103 int             mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
 104 static int      mptscsih_do_cmd(MPT_SCSI_HOST *hd, INTERNAL_CMD *iocmd);
 105 static void     mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice *vdevice);
 106
 107 void            mptscsih_remove(struct pci_dev *);
 108 void            mptscsih_shutdown(struct pci_dev *);
 109 #ifdef CONFIG_PM
 110 int             mptscsih_suspend(struct pci_dev *pdev, pm_message_t state);
 111 int             mptscsih_resume(struct pci_dev *pdev);
 112 #endif
 113
 114 #define SNS_LEN(scp)    SCSI_SENSE_BUFFERSIZE
 115
 116 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 117 /**
 118  *      mptscsih_add_sge - Place a simple SGE at address pAddr.
 119  *      @pAddr: virtual address for SGE
 120  *      @flagslength: SGE flags and data transfer length
 121  *      @dma_addr: Physical address
 122  *
 123  *      This routine places a MPT request frame back on the MPT adapter's
 124  *      FreeQ.
 125  */
 126 static inline void
 127 mptscsih_add_sge(char *pAddr, u32 flagslength, dma_addr_t dma_addr)
 128 {
 129         if (sizeof(dma_addr_t) == sizeof(u64)) {
 130                 SGESimple64_t *pSge = (SGESimple64_t *) pAddr;
 131                 u32 tmp = dma_addr & 0xFFFFFFFF;
 132
 133                 pSge->FlagsLength = cpu_to_le32(flagslength);
 134                 pSge->Address.Low = cpu_to_le32(tmp);
 135                 tmp = (u32) ((u64)dma_addr >> 32);
 136                 pSge->Address.High = cpu_to_le32(tmp);
 137
 138         } else {
 139                 SGESimple32_t *pSge = (SGESimple32_t *) pAddr;
 140                 pSge->FlagsLength = cpu_to_le32(flagslength);
 141                 pSge->Address = cpu_to_le32(dma_addr);
 142         }
 143 } /* mptscsih_add_sge() */
 144
 145 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 146 /**
 147  *      mptscsih_add_chain - Place a chain SGE at address pAddr.
 148  *      @pAddr: virtual address for SGE
 149  *      @next: nextChainOffset value (u32's)
 150  *      @length: length of next SGL segment
 151  *      @dma_addr: Physical address
 152  *
 153  *      This routine places a MPT request frame back on the MPT adapter's
 154  *      FreeQ.
 155  */
 156 static inline void
 157 mptscsih_add_chain(char *pAddr, u8 next, u16 length, dma_addr_t dma_addr)
 158 {
 159         if (sizeof(dma_addr_t) == sizeof(u64)) {
 160                 SGEChain64_t *pChain = (SGEChain64_t *) pAddr;
 161                 u32 tmp = dma_addr & 0xFFFFFFFF;
 162
 163                 pChain->Length = cpu_to_le16(length);
 164                 pChain->Flags = MPI_SGE_FLAGS_CHAIN_ELEMENT | mpt_addr_size();
 165
 166                 pChain->NextChainOffset = next;
 167
 168                 pChain->Address.Low = cpu_to_le32(tmp);
 169                 tmp = (u32) ((u64)dma_addr >> 32);
 170                 pChain->Address.High = cpu_to_le32(tmp);
 171         } else {
 172                 SGEChain32_t *pChain = (SGEChain32_t *) pAddr;
 173                 pChain->Length = cpu_to_le16(length);
 174                 pChain->Flags = MPI_SGE_FLAGS_CHAIN_ELEMENT | mpt_addr_size();
 175                 pChain->NextChainOffset = next;
 176                 pChain->Address = cpu_to_le32(dma_addr);
 177         }
 178 } /* mptscsih_add_chain() */
 179
 180 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 181 /*
 182  *      mptscsih_getFreeChainBuffer - Function to get a free chain
 183  *      from the MPT_SCSI_HOST FreeChainQ.
 184  *      @ioc: Pointer to MPT_ADAPTER structure
 185  *      @req_idx: Index of the SCSI IO request frame. (output)
 186  *
 187  *      return SUCCESS or FAILED
 188  */
 189 static inline int
 190 mptscsih_getFreeChainBuffer(MPT_ADAPTER *ioc, int *retIndex)
 191 {
 192         MPT_FRAME_HDR *chainBuf;
 193         unsigned long flags;
 194         int rc;
 195         int chain_idx;
 196
 197         dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "getFreeChainBuffer called\n",
 198             ioc->name));
 199         spin_lock_irqsave(&ioc->FreeQlock, flags);
 200         if (!list_empty(&ioc->FreeChainQ)) {
 201                 int offset;
 202
 203                 chainBuf = list_entry(ioc->FreeChainQ.next, MPT_FRAME_HDR,
 204                                 u.frame.linkage.list);
 205                 list_del(&chainBuf->u.frame.linkage.list);
 206                 offset = (u8 *)chainBuf - (u8 *)ioc->ChainBuffer;
 207                 chain_idx = offset / ioc->req_sz;
 208                 rc = SUCCESS;
 209                 dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT
 210                     "getFreeChainBuffer chainBuf=%p ChainBuffer=%p offset=%d chain_idx=%d\n",
 211                     ioc->name, chainBuf, ioc->ChainBuffer, offset, chain_idx));
 212         } else {
 213                 rc = FAILED;
 214                 chain_idx = MPT_HOST_NO_CHAIN;
 215                 dfailprintk(ioc, printk(MYIOC_s_ERR_FMT "getFreeChainBuffer failed\n",
 216                     ioc->name));
 217         }
 218         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
 219
 220         *retIndex = chain_idx;
 221         return rc;
 222 } /* mptscsih_getFreeChainBuffer() */
 223
 224 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 225 /*
 226  *      mptscsih_AddSGE - Add a SGE (plus chain buffers) to the
 227  *      SCSIIORequest_t Message Frame.
 228  *      @ioc: Pointer to MPT_ADAPTER structure
 229  *      @SCpnt: Pointer to scsi_cmnd structure
 230  *      @pReq: Pointer to SCSIIORequest_t structure
 231  *
 232  *      Returns ...
 233  */
 234 static int
 235 mptscsih_AddSGE(MPT_ADAPTER *ioc, struct scsi_cmnd *SCpnt,
 236                 SCSIIORequest_t *pReq, int req_idx)
 237 {
 238         char    *psge;
 239         char    *chainSge;
 240         struct scatterlist *sg;
 241         int      frm_sz;
 242         int      sges_left, sg_done;
 243         int      chain_idx = MPT_HOST_NO_CHAIN;
 244         int      sgeOffset;
 245         int      numSgeSlots, numSgeThisFrame;
 246         u32      sgflags, sgdir, thisxfer = 0;
 247         int      chain_dma_off = 0;
 248         int      newIndex;
 249         int      ii;
 250         dma_addr_t v2;
 251         u32     RequestNB;
 252
 253         sgdir = le32_to_cpu(pReq->Control) & MPI_SCSIIO_CONTROL_DATADIRECTION_MASK;
 254         if (sgdir == MPI_SCSIIO_CONTROL_WRITE)  {
 255                 sgdir = MPT_TRANSFER_HOST_TO_IOC;
 256         } else {
 257                 sgdir = MPT_TRANSFER_IOC_TO_HOST;
 258         }
 259
 260         psge = (char *) &pReq->SGL;
 261         frm_sz = ioc->req_sz;
 262
 263         /* Map the data portion, if any.
 264          * sges_left  = 0 if no data transfer.
 265          */
 266         sges_left = scsi_dma_map(SCpnt);
 267         if (sges_left < 0)
 268                 return FAILED;
 269
 270         /* Handle the SG case.
 271          */
 272         sg = scsi_sglist(SCpnt);
 273         sg_done  = 0;
 274         sgeOffset = sizeof(SCSIIORequest_t) - sizeof(SGE_IO_UNION);
 275         chainSge = NULL;
 276
 277         /* Prior to entering this loop - the following must be set
 278          * current MF:  sgeOffset (bytes)
 279          *              chainSge (Null if original MF is not a chain buffer)
 280          *              sg_done (num SGE done for this MF)
 281          */
 282
 283 nextSGEset:
 284         numSgeSlots = ((frm_sz - sgeOffset) / (sizeof(u32) + sizeof(dma_addr_t)) );
 285         numSgeThisFrame = (sges_left < numSgeSlots) ? sges_left : numSgeSlots;
 286
 287         sgflags = MPT_SGE_FLAGS_SIMPLE_ELEMENT | MPT_SGE_FLAGS_ADDRESSING | sgdir;
 288
 289         /* Get first (num - 1) SG elements
 290          * Skip any SG entries with a length of 0
 291          * NOTE: at finish, sg and psge pointed to NEXT data/location positions
 292          */
 293         for (ii=0; ii < (numSgeThisFrame-1); ii++) {
 294                 thisxfer = sg_dma_len(sg);
 295                 if (thisxfer == 0) {
 296                         sg = sg_next(sg); /* Get next SG element from the OS */
 297                         sg_done++;
 298                         continue;
 299                 }
 300
 301                 v2 = sg_dma_address(sg);
 302                 mptscsih_add_sge(psge, sgflags | thisxfer, v2);
 303
 304                 sg = sg_next(sg);       /* Get next SG element from the OS */
 305                 psge += (sizeof(u32) + sizeof(dma_addr_t));
 306                 sgeOffset += (sizeof(u32) + sizeof(dma_addr_t));
 307                 sg_done++;
 308         }
 309
 310         if (numSgeThisFrame == sges_left) {
 311                 /* Add last element, end of buffer and end of list flags.
 312                  */
 313                 sgflags |= MPT_SGE_FLAGS_LAST_ELEMENT |
 314                                 MPT_SGE_FLAGS_END_OF_BUFFER |
 315                                 MPT_SGE_FLAGS_END_OF_LIST;
 316
 317                 /* Add last SGE and set termination flags.
 318                  * Note: Last SGE may have a length of 0 - which should be ok.
 319                  */
 320                 thisxfer = sg_dma_len(sg);
 321
 322                 v2 = sg_dma_address(sg);
 323                 mptscsih_add_sge(psge, sgflags | thisxfer, v2);
 324                 /*
 325                 sg = sg_next(sg);
 326                 psge += (sizeof(u32) + sizeof(dma_addr_t));
 327                 */
 328                 sgeOffset += (sizeof(u32) + sizeof(dma_addr_t));
 329                 sg_done++;
 330
 331                 if (chainSge) {
 332                         /* The current buffer is a chain buffer,
 333                          * but there is not another one.
 334                          * Update the chain element
 335                          * Offset and Length fields.
 336                          */
 337                         mptscsih_add_chain((char *)chainSge, 0, sgeOffset, ioc->ChainBufferDMA + chain_dma_off);
 338                 } else {
 339                         /* The current buffer is the original MF
 340                          * and there is no Chain buffer.
 341                          */
 342                         pReq->ChainOffset = 0;
 343                         RequestNB = (((sgeOffset - 1) >> ioc->NBShiftFactor)  + 1) & 0x03;
 344                         dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT
 345                             "Single Buffer RequestNB=%x, sgeOffset=%d\n", ioc->name, RequestNB, sgeOffset));
 346                         ioc->RequestNB[req_idx] = RequestNB;
 347                 }
 348         } else {
 349                 /* At least one chain buffer is needed.
 350                  * Complete the first MF
 351                  *  - last SGE element, set the LastElement bit
 352                  *  - set ChainOffset (words) for orig MF
 353                  *             (OR finish previous MF chain buffer)
 354                  *  - update MFStructPtr ChainIndex
 355                  *  - Populate chain element
 356                  * Also
 357                  * Loop until done.
 358                  */
 359
 360                 dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "SG: Chain Required! sg done %d\n",
 361                                 ioc->name, sg_done));
 362
 363                 /* Set LAST_ELEMENT flag for last non-chain element
 364                  * in the buffer. Since psge points at the NEXT
 365                  * SGE element, go back one SGE element, update the flags
 366                  * and reset the pointer. (Note: sgflags & thisxfer are already
 367                  * set properly).
 368                  */
 369                 if (sg_done) {
 370                         u32 *ptmp = (u32 *) (psge - (sizeof(u32) + sizeof(dma_addr_t)));
 371                         sgflags = le32_to_cpu(*ptmp);
 372                         sgflags |= MPT_SGE_FLAGS_LAST_ELEMENT;
 373                         *ptmp = cpu_to_le32(sgflags);
 374                 }
 375
 376                 if (chainSge) {
 377                         /* The current buffer is a chain buffer.
 378                          * chainSge points to the previous Chain Element.
 379                          * Update its chain element Offset and Length (must
 380                          * include chain element size) fields.
 381                          * Old chain element is now complete.
 382                          */
 383                         u8 nextChain = (u8) (sgeOffset >> 2);
 384                         sgeOffset += (sizeof(u32) + sizeof(dma_addr_t));
 385                         mptscsih_add_chain((char *)chainSge, nextChain, sgeOffset, ioc->ChainBufferDMA + chain_dma_off);
 386                 } else {
 387                         /* The original MF buffer requires a chain buffer -
 388                          * set the offset.
 389                          * Last element in this MF is a chain element.
 390                          */
 391                         pReq->ChainOffset = (u8) (sgeOffset >> 2);
 392                         RequestNB = (((sgeOffset - 1) >> ioc->NBShiftFactor)  + 1) & 0x03;
 393                         dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Chain Buffer Needed, RequestNB=%x sgeOffset=%d\n", ioc->name, RequestNB, sgeOffset));
 394                         ioc->RequestNB[req_idx] = RequestNB;
 395                 }
 396
 397                 sges_left -= sg_done;
 398
 399
 400                 /* NOTE: psge points to the beginning of the chain element
 401                  * in current buffer. Get a chain buffer.
 402                  */
 403                 if ((mptscsih_getFreeChainBuffer(ioc, &newIndex)) == FAILED) {
 404                         dfailprintk(ioc, printk(MYIOC_s_DEBUG_FMT
 405                             "getFreeChainBuffer FAILED SCSI cmd=%02x (%p)\n",
 406                             ioc->name, pReq->CDB[0], SCpnt));
 407                         return FAILED;
 408                 }
 409
 410                 /* Update the tracking arrays.
 411                  * If chainSge == NULL, update ReqToChain, else ChainToChain
 412                  */
 413                 if (chainSge) {
 414                         ioc->ChainToChain[chain_idx] = newIndex;
 415                 } else {
 416                         ioc->ReqToChain[req_idx] = newIndex;
 417                 }
 418                 chain_idx = newIndex;
 419                 chain_dma_off = ioc->req_sz * chain_idx;
 420
 421                 /* Populate the chainSGE for the current buffer.
 422                  * - Set chain buffer pointer to psge and fill
 423                  *   out the Address and Flags fields.
 424                  */
 425                 chainSge = (char *) psge;
 426                 dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "  Current buff @ %p (index 0x%x)",
 427                     ioc->name, psge, req_idx));
 428
 429                 /* Start the SGE for the next buffer
 430                  */
 431                 psge = (char *) (ioc->ChainBuffer + chain_dma_off);
 432                 sgeOffset = 0;
 433                 sg_done = 0;
 434
 435                 dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "  Chain buff @ %p (index 0x%x)\n",
 436                     ioc->name, psge, chain_idx));
 437
 438                 /* Start the SGE for the next buffer
 439                  */
 440
 441                 goto nextSGEset;
 442         }
 443
 444         return SUCCESS;
 445 } /* mptscsih_AddSGE() */
 446
 447 static void
 448 mptscsih_issue_sep_command(MPT_ADAPTER *ioc, VirtTarget *vtarget,
 449     U32 SlotStatus)
 450 {
 451         MPT_FRAME_HDR *mf;
 452         SEPRequest_t     *SEPMsg;
 453
 454         if (ioc->bus_type != SAS)
 455                 return;
 456
 457         /* Not supported for hidden raid components
 458          */
 459         if (vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT)
 460                 return;
 461
 462         if ((mf = mpt_get_msg_frame(ioc->InternalCtx, ioc)) == NULL) {
 463                 dfailprintk(ioc, printk(MYIOC_s_WARN_FMT "%s: no msg frames!!\n",
 464                     ioc->name,__func__));
 465                 return;
 466         }
 467
 468         SEPMsg = (SEPRequest_t *)mf;
 469         SEPMsg->Function = MPI_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
 470         SEPMsg->Bus = vtarget->channel;
 471         SEPMsg->TargetID = vtarget->id;
 472         SEPMsg->Action = MPI_SEP_REQ_ACTION_WRITE_STATUS;
 473         SEPMsg->SlotStatus = SlotStatus;
 474         devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT
 475             "Sending SEP cmd=%x channel=%d id=%d\n",
 476             ioc->name, SlotStatus, SEPMsg->Bus, SEPMsg->TargetID));
 477         mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
 478 }
 479
 480 #ifdef CONFIG_FUSION_LOGGING
 481 /**
 482  *      mptscsih_info_scsiio - debug print info on reply frame
 483  *      @ioc: Pointer to MPT_ADAPTER structure
 484  *      @sc: original scsi cmnd pointer
 485  *      @pScsiReply: Pointer to MPT reply frame
 486  *
 487  *      MPT_DEBUG_REPLY needs to be enabled to obtain this info
 488  *
 489  *      Refer to lsi/mpi.h.
 490  **/
 491 static void
 492 mptscsih_info_scsiio(MPT_ADAPTER *ioc, struct scsi_cmnd *sc, SCSIIOReply_t * pScsiReply)
 493 {
 494         char    *desc = NULL;
 495         char    *desc1 = NULL;
 496         u16     ioc_status;
 497         u8      skey, asc, ascq;
 498
 499         ioc_status = le16_to_cpu(pScsiReply->IOCStatus) & MPI_IOCSTATUS_MASK;
 500
 501         switch (ioc_status) {
 502
 503         case MPI_IOCSTATUS_SUCCESS:
 504                 desc = "success";
 505                 break;
 506         case MPI_IOCSTATUS_SCSI_INVALID_BUS:
 507                 desc = "invalid bus";
 508                 break;
 509         case MPI_IOCSTATUS_SCSI_INVALID_TARGETID:
 510                 desc = "invalid target_id";
 511                 break;
 512         case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
 513                 desc = "device not there";
 514                 break;
 515         case MPI_IOCSTATUS_SCSI_DATA_OVERRUN:
 516                 desc = "data overrun";
 517                 break;
 518         case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:
 519                 desc = "data underrun";
 520                 break;
 521         case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:
 522                 desc = "I/O data error";
 523                 break;
 524         case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:
 525                 desc = "protocol error";
 526                 break;
 527         case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:
 528                 desc = "task terminated";
 529                 break;
 530         case MPI_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
 531                 desc = "residual mismatch";
 532                 break;
 533         case MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
 534                 desc = "task management failed";
 535                 break;
 536         case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:
 537                 desc = "IOC terminated";
 538                 break;
 539         case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:
 540                 desc = "ext terminated";
 541                 break;
 542         default:
 543                 desc = "";
 544                 break;
 545         }
 546
 547         switch (pScsiReply->SCSIStatus)
 548         {
 549
 550         case MPI_SCSI_STATUS_SUCCESS:
 551                 desc1 = "success";
 552                 break;
 553         case MPI_SCSI_STATUS_CHECK_CONDITION:
 554                 desc1 = "check condition";
 555                 break;
 556         case MPI_SCSI_STATUS_CONDITION_MET:
 557                 desc1 = "condition met";
 558                 break;
 559         case MPI_SCSI_STATUS_BUSY:
 560                 desc1 = "busy";
 561                 break;
 562         case MPI_SCSI_STATUS_INTERMEDIATE:
 563                 desc1 = "intermediate";
 564                 break;
 565         case MPI_SCSI_STATUS_INTERMEDIATE_CONDMET:
 566                 desc1 = "intermediate condmet";
 567                 break;
 568         case MPI_SCSI_STATUS_RESERVATION_CONFLICT:
 569                 desc1 = "reservation conflict";
 570                 break;
 571         case MPI_SCSI_STATUS_COMMAND_TERMINATED:
 572                 desc1 = "command terminated";
 573                 break;
 574         case MPI_SCSI_STATUS_TASK_SET_FULL:
 575                 desc1 = "task set full";
 576                 break;
 577         case MPI_SCSI_STATUS_ACA_ACTIVE:
 578                 desc1 = "aca active";
 579                 break;
 580         case MPI_SCSI_STATUS_FCPEXT_DEVICE_LOGGED_OUT:
 581                 desc1 = "fcpext device logged out";
 582                 break;
 583         case MPI_SCSI_STATUS_FCPEXT_NO_LINK:
 584                 desc1 = "fcpext no link";
 585                 break;
 586         case MPI_SCSI_STATUS_FCPEXT_UNASSIGNED:
 587                 desc1 = "fcpext unassigned";
 588                 break;
 589         default:
 590                 desc1 = "";
 591                 break;
 592         }
 593
 594         scsi_print_command(sc);
 595         printk(MYIOC_s_DEBUG_FMT "\tfw_channel = %d, fw_id = %d\n",
 596             ioc->name, pScsiReply->Bus, pScsiReply->TargetID);
 597         printk(MYIOC_s_DEBUG_FMT "\trequest_len = %d, underflow = %d, "
 598             "resid = %d\n", ioc->name, scsi_bufflen(sc), sc->underflow,
 599             scsi_get_resid(sc));
 600         printk(MYIOC_s_DEBUG_FMT "\ttag = %d, transfer_count = %d, "
 601             "sc->result = %08X\n", ioc->name, le16_to_cpu(pScsiReply->TaskTag),
 602             le32_to_cpu(pScsiReply->TransferCount), sc->result);
 603         printk(MYIOC_s_DEBUG_FMT "\tiocstatus = %s (0x%04x), "
 604             "scsi_status = %s (0x%02x), scsi_state = (0x%02x)\n",
 605             ioc->name, desc, ioc_status, desc1, pScsiReply->SCSIStatus,
 606             pScsiReply->SCSIState);
 607
 608         if (pScsiReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_VALID) {
 609                 skey = sc->sense_buffer[2] & 0x0F;
 610                 asc = sc->sense_buffer[12];
 611                 ascq = sc->sense_buffer[13];
 612
 613                 printk(MYIOC_s_DEBUG_FMT "\t[sense_key,asc,ascq]: "
 614                     "[0x%02x,0x%02x,0x%02x]\n", ioc->name, skey, asc, ascq);
 615         }
 616
 617         /*
 618          *  Look for + dump FCP ResponseInfo[]!
 619          */
 620         if (pScsiReply->SCSIState & MPI_SCSI_STATE_RESPONSE_INFO_VALID &&
 621             pScsiReply->ResponseInfo)
 622                 printk(MYIOC_s_DEBUG_FMT "response_info = %08xh\n",
 623                     ioc->name, le32_to_cpu(pScsiReply->ResponseInfo));
 624 }
 625 #endif
 626
 627 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 628 /*
 629  *      mptscsih_io_done - Main SCSI IO callback routine registered to
 630  *      Fusion MPT (base) driver
 631  *      @ioc: Pointer to MPT_ADAPTER structure
 632  *      @mf: Pointer to original MPT request frame
 633  *      @r: Pointer to MPT reply frame (NULL if TurboReply)
 634  *
 635  *      This routine is called from mpt.c::mpt_interrupt() at the completion
 636  *      of any SCSI IO request.
 637  *      This routine is registered with the Fusion MPT (base) driver at driver
 638  *      load/init time via the mpt_register() API call.
 639  *
 640  *      Returns 1 indicating alloc'd request frame ptr should be freed.
 641  */
 642 int
 643 mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
 644 {
 645         struct scsi_cmnd        *sc;
 646         MPT_SCSI_HOST   *hd;
 647         SCSIIORequest_t *pScsiReq;
 648         SCSIIOReply_t   *pScsiReply;
 649         u16              req_idx, req_idx_MR;
 650         VirtDevice       *vdevice;
 651         VirtTarget       *vtarget;
 652
 653         hd = shost_priv(ioc->sh);
 654         req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
 655         req_idx_MR = (mr != NULL) ?
 656             le16_to_cpu(mr->u.frame.hwhdr.msgctxu.fld.req_idx) : req_idx;
 657         if ((req_idx != req_idx_MR) ||
 658             (mf->u.frame.linkage.arg1 == 0xdeadbeaf)) {
 659                 printk(MYIOC_s_ERR_FMT "Received a mf that was already freed\n",
 660                     ioc->name);
 661                 printk (MYIOC_s_ERR_FMT
 662                     "req_idx=%x req_idx_MR=%x mf=%p mr=%p sc=%p\n",
 663                     ioc->name, req_idx, req_idx_MR, mf, mr,
 664                     mptscsih_get_scsi_lookup(ioc, req_idx_MR));
 665                 return 0;
 666         }
 667
 668         sc = mptscsih_getclear_scsi_lookup(ioc, req_idx);
 669         if (sc == NULL) {
 670                 MPIHeader_t *hdr = (MPIHeader_t *)mf;
 671
 672                 /* Remark: writeSDP1 will use the ScsiDoneCtx
 673                  * If a SCSI I/O cmd, device disabled by OS and
 674                  * completion done. Cannot touch sc struct. Just free mem.
 675                  */
 676                 if (hdr->Function == MPI_FUNCTION_SCSI_IO_REQUEST)
 677                         printk(MYIOC_s_ERR_FMT "NULL ScsiCmd ptr!\n",
 678                         ioc->name);
 679
 680                 mptscsih_freeChainBuffers(ioc, req_idx);
 681                 return 1;
 682         }
 683
 684         if ((unsigned char *)mf != sc->host_scribble) {
 685                 mptscsih_freeChainBuffers(ioc, req_idx);
 686                 return 1;
 687         }
 688
 689         sc->host_scribble = NULL;
 690         sc->result = DID_OK << 16;              /* Set default reply as OK */
 691         pScsiReq = (SCSIIORequest_t *) mf;
 692         pScsiReply = (SCSIIOReply_t *) mr;
 693
 694         if((ioc->facts.MsgVersion >= MPI_VERSION_01_05) && pScsiReply){
 695                 dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT
 696                         "ScsiDone (mf=%p,mr=%p,sc=%p,idx=%d,task-tag=%d)\n",
 697                         ioc->name, mf, mr, sc, req_idx, pScsiReply->TaskTag));
 698         }else{
 699                 dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT
 700                         "ScsiDone (mf=%p,mr=%p,sc=%p,idx=%d)\n",
 701                         ioc->name, mf, mr, sc, req_idx));
 702         }
 703
 704         if (pScsiReply == NULL) {
 705                 /* special context reply handling */
 706                 ;
 707         } else {
 708                 u32      xfer_cnt;
 709                 u16      status;
 710                 u8       scsi_state, scsi_status;
 711                 u32      log_info;
 712
 713                 status = le16_to_cpu(pScsiReply->IOCStatus) & MPI_IOCSTATUS_MASK;
 714                 scsi_state = pScsiReply->SCSIState;
 715                 scsi_status = pScsiReply->SCSIStatus;
 716                 xfer_cnt = le32_to_cpu(pScsiReply->TransferCount);
 717                 scsi_set_resid(sc, scsi_bufflen(sc) - xfer_cnt);
 718                 log_info = le32_to_cpu(pScsiReply->IOCLogInfo);
 719
 720                 /*
 721                  *  if we get a data underrun indication, yet no data was
 722                  *  transferred and the SCSI status indicates that the
 723                  *  command was never started, change the data underrun
 724                  *  to success
 725                  */
 726                 if (status == MPI_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
 727                     (scsi_status == MPI_SCSI_STATUS_BUSY ||
 728                      scsi_status == MPI_SCSI_STATUS_RESERVATION_CONFLICT ||
 729                      scsi_status == MPI_SCSI_STATUS_TASK_SET_FULL)) {
 730                         status = MPI_IOCSTATUS_SUCCESS;
 731                 }
 732
 733                 if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID)
 734                         mptscsih_copy_sense_data(sc, hd, mf, pScsiReply);
 735
 736                 /*
 737                  *  Look for + dump FCP ResponseInfo[]!
 738                  */
 739                 if (scsi_state & MPI_SCSI_STATE_RESPONSE_INFO_VALID &&
 740                     pScsiReply->ResponseInfo) {
 741                         printk(MYIOC_s_NOTE_FMT "[%d:%d:%d:%d] "
 742                         "FCP_ResponseInfo=%08xh\n", ioc->name,
 743                         sc->device->host->host_no, sc->device->channel,
 744                         sc->device->id, sc->device->lun,
 745                         le32_to_cpu(pScsiReply->ResponseInfo));
 746                 }
 747
 748                 switch(status) {
 749                 case MPI_IOCSTATUS_BUSY:                        /* 0x0002 */
 750                         /* CHECKME!
 751                          * Maybe: DRIVER_BUSY | SUGGEST_RETRY | DID_SOFT_ERROR (retry)
 752                          * But not: DID_BUS_BUSY lest one risk
 753                          * killing interrupt handler:-(
 754                          */
 755                         sc->result = SAM_STAT_BUSY;
 756                         break;
 757
 758                 case MPI_IOCSTATUS_SCSI_INVALID_BUS:            /* 0x0041 */
 759                 case MPI_IOCSTATUS_SCSI_INVALID_TARGETID:       /* 0x0042 */
 760                         sc->result = DID_BAD_TARGET << 16;
 761                         break;
 762
 763                 case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:       /* 0x0043 */
 764                         /* Spoof to SCSI Selection Timeout! */
 765                         if (ioc->bus_type != FC)
 766                                 sc->result = DID_NO_CONNECT << 16;
 767                         /* else fibre, just stall until rescan event */
 768                         else
 769                                 sc->result = DID_REQUEUE << 16;
 770
 771                         if (hd->sel_timeout[pScsiReq->TargetID] < 0xFFFF)
 772                                 hd->sel_timeout[pScsiReq->TargetID]++;
 773
 774                         vdevice = sc->device->hostdata;
 775                         if (!vdevice)
 776                                 break;
 777                         vtarget = vdevice->vtarget;
 778                         if (vtarget->tflags & MPT_TARGET_FLAGS_LED_ON) {
 779                                 mptscsih_issue_sep_command(ioc, vtarget,
 780                                     MPI_SEP_REQ_SLOTSTATUS_UNCONFIGURED);
 781                                 vtarget->tflags &= ~MPT_TARGET_FLAGS_LED_ON;
 782                         }
 783                         break;
 784
 785                 case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:         /* 0x004B */
 786                         if ( ioc->bus_type == SAS ) {
 787                                 u16 ioc_status = le16_to_cpu(pScsiReply->IOCStatus);
 788                                 if (ioc_status & MPI_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE) {
 789                                         if ((log_info & SAS_LOGINFO_MASK)
 790                                             == SAS_LOGINFO_NEXUS_LOSS) {
 791                                                 sc->result = (DID_BUS_BUSY << 16);
 792                                                 break;
 793                                         }
 794                                 }
 795                         } else if (ioc->bus_type == FC) {
 796                                 /*
 797                                  * The FC IOC may kill a request for variety of
 798                                  * reasons, some of which may be recovered by a
 799                                  * retry, some which are unlikely to be
 800                                  * recovered. Return DID_ERROR instead of
 801                                  * DID_RESET to permit retry of the command,
 802                                  * just not an infinite number of them
 803                                  */
 804                                 sc->result = DID_ERROR << 16;
 805                                 break;
 806                         }
 807
 808                         /*
 809                          * Allow non-SAS & non-NEXUS_LOSS to drop into below code
 810                          */
 811
 812                 case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:        /* 0x0048 */
 813                 case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:         /* 0x004C */
 814                         /* Linux handles an unsolicited DID_RESET better
 815                          * than an unsolicited DID_ABORT.
 816                          */
 817                         sc->result = DID_RESET << 16;
 818
 819                         break;
 820
 821                 case MPI_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:      /* 0x0049 */
 822                         scsi_set_resid(sc, scsi_bufflen(sc) - xfer_cnt);
 823                         if((xfer_cnt==0)||(sc->underflow > xfer_cnt))
 824                                 sc->result=DID_SOFT_ERROR << 16;
 825                         else /* Sufficient data transfer occurred */
 826                                 sc->result = (DID_OK << 16) | scsi_status;
 827                         dreplyprintk(ioc, printk(MYIOC_s_DEBUG_FMT
 828                             "RESIDUAL_MISMATCH: result=%x on channel=%d id=%d\n",
 829                             ioc->name, sc->result, sc->device->channel, sc->device->id));
 830                         break;
 831
 832                 case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:          /* 0x0045 */
 833                         /*
 834                          *  Do upfront check for valid SenseData and give it
 835                          *  precedence!
 836                          */
 837                         sc->result = (DID_OK << 16) | scsi_status;
 838                         if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID) {
 839                                 /* Have already saved the status and sense data
 840                                  */
 841                                 ;
 842                         } else {
 843                                 if (xfer_cnt < sc->underflow) {
 844                                         if (scsi_status == SAM_STAT_BUSY)
 845                                                 sc->result = SAM_STAT_BUSY;
 846                                         else
 847                                                 sc->result = DID_SOFT_ERROR << 16;
 848                                 }
 849                                 if (scsi_state & (MPI_SCSI_STATE_AUTOSENSE_FAILED | MPI_SCSI_STATE_NO_SCSI_STATUS)) {
 850                                         /* What to do?
 851                                         */
 852                                         sc->result = DID_SOFT_ERROR << 16;
 853                                 }
 854                                 else if (scsi_state & MPI_SCSI_STATE_TERMINATED) {
 855                                         /*  Not real sure here either...  */
 856                                         sc->result = DID_RESET << 16;
 857                                 }
 858                         }
 859
 860
 861                         dreplyprintk(ioc, printk(MYIOC_s_DEBUG_FMT
 862                             "  sc->underflow={report ERR if < %02xh bytes xfer'd}\n",
 863                             ioc->name, sc->underflow));
 864                         dreplyprintk(ioc, printk(MYIOC_s_DEBUG_FMT
 865                             "  ActBytesXferd=%02xh\n", ioc->name, xfer_cnt));
 866
 867                         /* Report Queue Full
 868                          */
 869                         if (scsi_status == MPI_SCSI_STATUS_TASK_SET_FULL)
 870                                 mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
 871
 872                         break;
 873
 874                 case MPI_IOCSTATUS_SCSI_DATA_OVERRUN:           /* 0x0044 */
 875                         scsi_set_resid(sc, 0);
 876                 case MPI_IOCSTATUS_SCSI_RECOVERED_ERROR:        /* 0x0040 */
 877                 case MPI_IOCSTATUS_SUCCESS:                     /* 0x0000 */
 878                         sc->result = (DID_OK << 16) | scsi_status;
 879                         if (scsi_state == 0) {
 880                                 ;
 881                         } else if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID) {
 882                                 /*
 883                                  * If running against circa 200003dd 909 MPT f/w,
 884                                  * may get this (AUTOSENSE_VALID) for actual TASK_SET_FULL
 885                                  * (QUEUE_FULL) returned from device! --> get 0x0000?128
 886                                  * and with SenseBytes set to 0.
 887                                  */
 888                                 if (pScsiReply->SCSIStatus == MPI_SCSI_STATUS_TASK_SET_FULL)
 889                                         mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
 890
 891                         }
 892                         else if (scsi_state &
 893                                  (MPI_SCSI_STATE_AUTOSENSE_FAILED | MPI_SCSI_STATE_NO_SCSI_STATUS)
 894                            ) {
 895                                 /*
 896                                  * What to do?
 897                                  */
 898                                 sc->result = DID_SOFT_ERROR << 16;
 899                         }
 900                         else if (scsi_state & MPI_SCSI_STATE_TERMINATED) {
 901                                 /*  Not real sure here either...  */
 902                                 sc->result = DID_RESET << 16;
 903                         }
 904                         else if (scsi_state & MPI_SCSI_STATE_QUEUE_TAG_REJECTED) {
 905                                 /* Device Inq. data indicates that it supports
 906                                  * QTags, but rejects QTag messages.
 907                                  * This command completed OK.
 908                                  *
 909                                  * Not real sure here either so do nothing...  */
 910                         }
 911
 912                         if (sc->result == MPI_SCSI_STATUS_TASK_SET_FULL)
 913                                 mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
 914
 915                         /* Add handling of:
 916                          * Reservation Conflict, Busy,
 917                          * Command Terminated, CHECK
 918                          */
 919                         break;
 920
 921                 case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:         /* 0x0047 */
 922                         sc->result = DID_SOFT_ERROR << 16;
 923                         break;
 924
 925                 case MPI_IOCSTATUS_INVALID_FUNCTION:            /* 0x0001 */
 926                 case MPI_IOCSTATUS_INVALID_SGL:                 /* 0x0003 */
 927                 case MPI_IOCSTATUS_INTERNAL_ERROR:              /* 0x0004 */
 928                 case MPI_IOCSTATUS_RESERVED:                    /* 0x0005 */
 929                 case MPI_IOCSTATUS_INSUFFICIENT_RESOURCES:      /* 0x0006 */
 930                 case MPI_IOCSTATUS_INVALID_FIELD:               /* 0x0007 */
 931                 case MPI_IOCSTATUS_INVALID_STATE:               /* 0x0008 */
 932                 case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:          /* 0x0046 */
 933                 case MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED:       /* 0x004A */
 934                 default:
 935                         /*
 936                          * What to do?
 937                          */
 938                         sc->result = DID_SOFT_ERROR << 16;
 939                         break;
 940
 941                 }       /* switch(status) */
 942
 943 #ifdef CONFIG_FUSION_LOGGING
 944                 if (sc->result && (ioc->debug_level & MPT_DEBUG_REPLY))
 945                         mptscsih_info_scsiio(ioc, sc, pScsiReply);
 946 #endif
 947
 948         } /* end of address reply case */
 949
 950         /* Unmap the DMA buffers, if any. */
 951         scsi_dma_unmap(sc);
 952
 953         sc->scsi_done(sc);              /* Issue the command callback */
 954
 955         /* Free Chain buffers */
 956         mptscsih_freeChainBuffers(ioc, req_idx);
 957         return 1;
 958 }
 959
 960 /*
 961  *      mptscsih_flush_running_cmds - For each command found, search
 962  *              Scsi_Host instance taskQ and reply to OS.
 963  *              Called only if recovering from a FW reload.
 964  *      @hd: Pointer to a SCSI HOST structure
 965  *
 966  *      Returns: None.
 967  *
 968  *      Must be called while new I/Os are being queued.
 969  */
 970 static void
 971 mptscsih_flush_running_cmds(MPT_SCSI_HOST *hd)
 972 {
 973         MPT_ADAPTER *ioc = hd->ioc;
 974         struct scsi_cmnd *sc;
 975         SCSIIORequest_t *mf = NULL;
 976         int              ii;
 977         int              channel, id;
 978
 979         for (ii= 0; ii < ioc->req_depth; ii++) {
 980                 sc = mptscsih_getclear_scsi_lookup(ioc, ii);
 981                 if (!sc)
 982                         continue;
 983                 mf = (SCSIIORequest_t *)MPT_INDEX_2_MFPTR(ioc, ii);
 984                 if (!mf)
 985                         continue;
 986                 channel = mf->Bus;
 987                 id = mf->TargetID;
 988                 mptscsih_freeChainBuffers(ioc, ii);
 989                 mpt_free_msg_frame(ioc, (MPT_FRAME_HDR *)mf);
 990                 if ((unsigned char *)mf != sc->host_scribble)
 991                         continue;
 992                 scsi_dma_unmap(sc);
 993                 sc->result = DID_RESET << 16;
 994                 sc->host_scribble = NULL;
 995                 sdev_printk(KERN_INFO, sc->device, MYIOC_s_FMT
 996                     "completing cmds: fw_channel %d, fw_id %d, sc=%p,"
 997                     " mf = %p, idx=%x\n", ioc->name, channel, id, sc, mf, ii);
 998                 sc->scsi_done(sc);
 999         }
1000 }
1001
1002 /*
1003  *      mptscsih_search_running_cmds - Delete any commands associated
1004  *              with the specified target and lun. Function called only
1005  *              when a lun is disable by mid-layer.
1006  *              Do NOT access the referenced scsi_cmnd structure or
1007  *              members. Will cause either a paging or NULL ptr error.
1008  *              (BUT, BUT, BUT, the code does reference it! - mdr)
1009  *      @hd: Pointer to a SCSI HOST structure
1010  *      @vdevice: per device private data
1011  *
1012  *      Returns: None.
1013  *
1014  *      Called from slave_destroy.
1015  */
1016 static void
1017 mptscsih_search_running_cmds(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
1018 {
1019         SCSIIORequest_t *mf = NULL;
1020         int              ii;
1021         struct scsi_cmnd *sc;
1022         struct scsi_lun  lun;
1023         MPT_ADAPTER *ioc = hd->ioc;
1024         unsigned long   flags;
1025
1026         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1027         for (ii = 0; ii < ioc->req_depth; ii++) {
1028                 if ((sc = ioc->ScsiLookup[ii]) != NULL) {
1029
1030                         mf = (SCSIIORequest_t *)MPT_INDEX_2_MFPTR(ioc, ii);
1031                         if (mf == NULL)
1032                                 continue;
1033                         /* If the device is a hidden raid component, then its
1034                          * expected that the mf->function will be RAID_SCSI_IO
1035                          */
1036                         if (vdevice->vtarget->tflags &
1037                             MPT_TARGET_FLAGS_RAID_COMPONENT && mf->Function !=
1038                             MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)
1039                                 continue;
1040
1041                         int_to_scsilun(vdevice->lun, &lun);
1042                         if ((mf->Bus != vdevice->vtarget->channel) ||
1043                             (mf->TargetID != vdevice->vtarget->id) ||
1044                             memcmp(lun.scsi_lun, mf->LUN, 8))
1045                                 continue;
1046
1047                         if ((unsigned char *)mf != sc->host_scribble)
1048                                 continue;
1049                         ioc->ScsiLookup[ii] = NULL;
1050                         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1051                         mptscsih_freeChainBuffers(ioc, ii);
1052                         mpt_free_msg_frame(ioc, (MPT_FRAME_HDR *)mf);
1053                         scsi_dma_unmap(sc);
1054                         sc->host_scribble = NULL;
1055                         sc->result = DID_NO_CONNECT << 16;
1056                         sdev_printk(KERN_INFO, sc->device, MYIOC_s_FMT "completing cmds: fw_channel %d,"
1057                            "fw_id %d, sc=%p, mf = %p, idx=%x\n", ioc->name, vdevice->vtarget->channel,
1058                            vdevice->vtarget->id, sc, mf, ii);
1059                         sc->scsi_done(sc);
1060                         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1061                 }
1062         }
1063         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1064         return;
1065 }
1066
1067 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1068
1069 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1070 /*
1071  *      mptscsih_report_queue_full - Report QUEUE_FULL status returned
1072  *      from a SCSI target device.
1073  *      @sc: Pointer to scsi_cmnd structure
1074  *      @pScsiReply: Pointer to SCSIIOReply_t
1075  *      @pScsiReq: Pointer to original SCSI request
1076  *
1077  *      This routine periodically reports QUEUE_FULL status returned from a
1078  *      SCSI target device.  It reports this to the console via kernel
1079  *      printk() API call, not more than once every 10 seconds.
1080  */
1081 static void
1082 mptscsih_report_queue_full(struct scsi_cmnd *sc, SCSIIOReply_t *pScsiReply, SCSIIORequest_t *pScsiReq)
1083 {
1084         long time = jiffies;
1085         MPT_SCSI_HOST           *hd;
1086         MPT_ADAPTER     *ioc;
1087
1088         if (sc->device == NULL)
1089                 return;
1090         if (sc->device->host == NULL)
1091                 return;
1092         if ((hd = shost_priv(sc->device->host)) == NULL)
1093                 return;
1094         ioc = hd->ioc;
1095         if (time - hd->last_queue_full > 10 * HZ) {
1096                 dprintk(ioc, printk(MYIOC_s_WARN_FMT "Device (%d:%d:%d) reported QUEUE_FULL!\n",
1097                                 ioc->name, 0, sc->device->id, sc->device->lun));
1098                 hd->last_queue_full = time;
1099         }
1100 }
1101
1102 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1103 /*
1104  *      mptscsih_remove - Removed scsi devices
1105  *      @pdev: Pointer to pci_dev structure
1106  *
1107  *
1108  */
1109 void
1110 mptscsih_remove(struct pci_dev *pdev)
1111 {
1112         MPT_ADAPTER             *ioc = pci_get_drvdata(pdev);
1113         struct Scsi_Host        *host = ioc->sh;
1114         MPT_SCSI_HOST           *hd;
1115         int sz1;
1116
1117         if(!host) {
1118                 mpt_detach(pdev);
1119                 return;
1120         }
1121
1122         scsi_remove_host(host);
1123
1124         if((hd = shost_priv(host)) == NULL)
1125                 return;
1126
1127         mptscsih_shutdown(pdev);
1128
1129         sz1=0;
1130
1131         if (ioc->ScsiLookup != NULL) {
1132                 sz1 = ioc->req_depth * sizeof(void *);
1133                 kfree(ioc->ScsiLookup);
1134                 ioc->ScsiLookup = NULL;
1135         }
1136
1137         dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1138             "Free'd ScsiLookup (%d) memory\n",
1139             ioc->name, sz1));
1140
1141         kfree(hd->info_kbuf);
1142
1143         /* NULL the Scsi_Host pointer
1144          */
1145         ioc->sh = NULL;
1146
1147         scsi_host_put(host);
1148
1149         mpt_detach(pdev);
1150
1151 }
1152
1153 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1154 /*
1155  *      mptscsih_shutdown - reboot notifier
1156  *
1157  */
1158 void
1159 mptscsih_shutdown(struct pci_dev *pdev)
1160 {
1161 }
1162
1163 #ifdef CONFIG_PM
1164 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1165 /*
1166  *      mptscsih_suspend - Fusion MPT scsi driver suspend routine.
1167  *
1168  *
1169  */
1170 int
1171 mptscsih_suspend(struct pci_dev *pdev, pm_message_t state)
1172 {
1173         MPT_ADAPTER             *ioc = pci_get_drvdata(pdev);
1174
1175         scsi_block_requests(ioc->sh);
1176         flush_scheduled_work();
1177         mptscsih_shutdown(pdev);
1178         return mpt_suspend(pdev,state);
1179 }
1180
1181 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1182 /*
1183  *      mptscsih_resume - Fusion MPT scsi driver resume routine.
1184  *
1185  *
1186  */
1187 int
1188 mptscsih_resume(struct pci_dev *pdev)
1189 {
1190         MPT_ADAPTER             *ioc = pci_get_drvdata(pdev);
1191         int rc;
1192
1193         rc = mpt_resume(pdev);
1194         scsi_unblock_requests(ioc->sh);
1195         return rc;
1196 }
1197
1198 #endif
1199
1200 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1201 /**
1202  *      mptscsih_info - Return information about MPT adapter
1203  *      @SChost: Pointer to Scsi_Host structure
1204  *
1205  *      (linux scsi_host_template.info routine)
1206  *
1207  *      Returns pointer to buffer where information was written.
1208  */
1209 const char *
1210 mptscsih_info(struct Scsi_Host *SChost)
1211 {
1212         MPT_SCSI_HOST *h;
1213         int size = 0;
1214
1215         h = shost_priv(SChost);
1216
1217         if (h) {
1218                 if (h->info_kbuf == NULL)
1219                         if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL)
1220                                 return h->info_kbuf;
1221                 h->info_kbuf[0] = '\0';
1222
1223                 mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0);
1224                 h->info_kbuf[size-1] = '\0';
1225         }
1226
1227         return h->info_kbuf;
1228 }
1229
1230 struct info_str {
1231         char *buffer;
1232         int   length;
1233         int   offset;
1234         int   pos;
1235 };
1236
1237 static void
1238 mptscsih_copy_mem_info(struct info_str *info, char *data, int len)
1239 {
1240         if (info->pos + len > info->length)
1241                 len = info->length - info->pos;
1242
1243         if (info->pos + len < info->offset) {
1244                 info->pos += len;
1245                 return;
1246         }
1247
1248         if (info->pos < info->offset) {
1249                 data += (info->offset - info->pos);
1250                 len  -= (info->offset - info->pos);
1251         }
1252
1253         if (len > 0) {
1254                 memcpy(info->buffer + info->pos, data, len);
1255                 info->pos += len;
1256         }
1257 }
1258
1259 static int
1260 mptscsih_copy_info(struct info_str *info, char *fmt, ...)
1261 {
1262         va_list args;
1263         char buf[81];
1264         int len;
1265
1266         va_start(args, fmt);
1267         len = vsprintf(buf, fmt, args);
1268         va_end(args);
1269
1270         mptscsih_copy_mem_info(info, buf, len);
1271         return len;
1272 }
1273
1274 static int
1275 mptscsih_host_info(MPT_ADAPTER *ioc, char *pbuf, off_t offset, int len)
1276 {
1277         struct info_str info;
1278
1279         info.buffer     = pbuf;
1280         info.length     = len;
1281         info.offset     = offset;
1282         info.pos        = 0;
1283
1284         mptscsih_copy_info(&info, "%s: %s, ", ioc->name, ioc->prod_name);
1285         mptscsih_copy_info(&info, "%s%08xh, ", MPT_FW_REV_MAGIC_ID_STRING, ioc->facts.FWVersion.Word);
1286         mptscsih_copy_info(&info, "Ports=%d, ", ioc->facts.NumberOfPorts);
1287         mptscsih_copy_info(&info, "MaxQ=%d\n", ioc->req_depth);
1288
1289         return ((info.pos > info.offset) ? info.pos - info.offset : 0);
1290 }
1291
1292 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1293 /**
1294  *      mptscsih_proc_info - Return information about MPT adapter
1295  *      @host:   scsi host struct
1296  *      @buffer: if write, user data; if read, buffer for user
1297  *      @start: returns the buffer address
1298  *      @offset: if write, 0; if read, the current offset into the buffer from
1299  *               the previous read.
1300  *      @length: if write, return length;
1301  *      @func:   write = 1; read = 0
1302  *
1303  *      (linux scsi_host_template.info routine)
1304  */
1305 int
1306 mptscsih_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
1307                         int length, int func)
1308 {
1309         MPT_SCSI_HOST   *hd = shost_priv(host);
1310         MPT_ADAPTER     *ioc = hd->ioc;
1311         int size = 0;
1312
1313         if (func) {
1314                 /*
1315                  * write is not supported
1316                  */
1317         } else {
1318                 if (start)
1319                         *start = buffer;
1320
1321                 size = mptscsih_host_info(ioc, buffer, offset, length);
1322         }
1323
1324         return size;
1325 }
1326
1327 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1328 #define ADD_INDEX_LOG(req_ent)  do { } while(0)
1329
1330 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1331 /**
1332  *      mptscsih_qcmd - Primary Fusion MPT SCSI initiator IO start routine.
1333  *      @SCpnt: Pointer to scsi_cmnd structure
1334  *      @done: Pointer SCSI mid-layer IO completion function
1335  *
1336  *      (linux scsi_host_template.queuecommand routine)
1337  *      This is the primary SCSI IO start routine.  Create a MPI SCSIIORequest
1338  *      from a linux scsi_cmnd request and send it to the IOC.
1339  *
1340  *      Returns 0. (rtn value discarded by linux scsi mid-layer)
1341  */
1342 int
1343 mptscsih_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
1344 {
1345         MPT_SCSI_HOST           *hd;
1346         MPT_FRAME_HDR           *mf;
1347         SCSIIORequest_t         *pScsiReq;
1348         VirtDevice              *vdevice = SCpnt->device->hostdata;
1349         int      lun;
1350         u32      datalen;
1351         u32      scsictl;
1352         u32      scsidir;
1353         u32      cmd_len;
1354         int      my_idx;
1355         int      ii;
1356         MPT_ADAPTER *ioc;
1357
1358         hd = shost_priv(SCpnt->device->host);
1359         ioc = hd->ioc;
1360         lun = SCpnt->device->lun;
1361         SCpnt->scsi_done = done;
1362
1363         dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT "qcmd: SCpnt=%p, done()=%p\n",
1364                 ioc->name, SCpnt, done));
1365
1366         if (hd->resetPending) {
1367                 dtmprintk(ioc, printk(MYIOC_s_WARN_FMT "qcmd: SCpnt=%p timeout + 60HZ\n",
1368                         ioc->name, SCpnt));
1369                 return SCSI_MLQUEUE_HOST_BUSY;
1370         }
1371
1372         /*
1373          *  Put together a MPT SCSI request...
1374          */
1375         if ((mf = mpt_get_msg_frame(ioc->DoneCtx, ioc)) == NULL) {
1376                 dprintk(ioc, printk(MYIOC_s_WARN_FMT "QueueCmd, no msg frames!!\n",
1377                                 ioc->name));
1378                 return SCSI_MLQUEUE_HOST_BUSY;
1379         }
1380
1381         pScsiReq = (SCSIIORequest_t *) mf;
1382
1383         my_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
1384
1385         ADD_INDEX_LOG(my_idx);
1386
1387         /*    TUR's being issued with scsictl=0x02000000 (DATA_IN)!
1388          *    Seems we may receive a buffer (datalen>0) even when there
1389          *    will be no data transfer!  GRRRRR...
1390          */
1391         if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) {
1392                 datalen = scsi_bufflen(SCpnt);
1393                 scsidir = MPI_SCSIIO_CONTROL_READ;      /* DATA IN  (host<--ioc<--dev) */
1394         } else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) {
1395                 datalen = scsi_bufflen(SCpnt);
1396                 scsidir = MPI_SCSIIO_CONTROL_WRITE;     /* DATA OUT (host-->ioc-->dev) */
1397         } else {
1398                 datalen = 0;
1399                 scsidir = MPI_SCSIIO_CONTROL_NODATATRANSFER;
1400         }
1401
1402         /* Default to untagged. Once a target structure has been allocated,
1403          * use the Inquiry data to determine if device supports tagged.
1404          */
1405         if (vdevice
1406             && (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_Q_YES)
1407             && (SCpnt->device->tagged_supported)) {
1408                 scsictl = scsidir | MPI_SCSIIO_CONTROL_SIMPLEQ;
1409         } else {
1410                 scsictl = scsidir | MPI_SCSIIO_CONTROL_UNTAGGED;
1411         }
1412
1413         /* Use the above information to set up the message frame
1414          */
1415         pScsiReq->TargetID = (u8) vdevice->vtarget->id;
1416         pScsiReq->Bus = vdevice->vtarget->channel;
1417         pScsiReq->ChainOffset = 0;
1418         if (vdevice->vtarget->tflags &  MPT_TARGET_FLAGS_RAID_COMPONENT)
1419                 pScsiReq->Function = MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
1420         else
1421                 pScsiReq->Function = MPI_FUNCTION_SCSI_IO_REQUEST;
1422         pScsiReq->CDBLength = SCpnt->cmd_len;
1423         pScsiReq->SenseBufferLength = MPT_SENSE_BUFFER_SIZE;
1424         pScsiReq->Reserved = 0;
1425         pScsiReq->MsgFlags = mpt_msg_flags();
1426         int_to_scsilun(SCpnt->device->lun, (struct scsi_lun *)pScsiReq->LUN);
1427         pScsiReq->Control = cpu_to_le32(scsictl);
1428
1429         /*
1430          *  Write SCSI CDB into the message
1431          */
1432         cmd_len = SCpnt->cmd_len;
1433         for (ii=0; ii < cmd_len; ii++)
1434                 pScsiReq->CDB[ii] = SCpnt->cmnd[ii];
1435
1436         for (ii=cmd_len; ii < 16; ii++)
1437                 pScsiReq->CDB[ii] = 0;
1438
1439         /* DataLength */
1440         pScsiReq->DataLength = cpu_to_le32(datalen);
1441
1442         /* SenseBuffer low address */
1443         pScsiReq->SenseBufferLowAddr = cpu_to_le32(ioc->sense_buf_low_dma
1444                                            + (my_idx * MPT_SENSE_BUFFER_ALLOC));
1445
1446         /* Now add the SG list
1447          * Always have a SGE even if null length.
1448          */
1449         if (datalen == 0) {
1450                 /* Add a NULL SGE */
1451                 mptscsih_add_sge((char *)&pScsiReq->SGL, MPT_SGE_FLAGS_SSIMPLE_READ | 0,
1452                         (dma_addr_t) -1);
1453         } else {
1454                 /* Add a 32 or 64 bit SGE */
1455                 if (mptscsih_AddSGE(ioc, SCpnt, pScsiReq, my_idx) != SUCCESS)
1456                         goto fail;
1457         }
1458
1459         SCpnt->host_scribble = (unsigned char *)mf;
1460         mptscsih_set_scsi_lookup(ioc, my_idx, SCpnt);
1461
1462         mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
1463         dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Issued SCSI cmd (%p) mf=%p idx=%d\n",
1464                         ioc->name, SCpnt, mf, my_idx));
1465         DBG_DUMP_REQUEST_FRAME(ioc, (u32 *)mf);
1466         return 0;
1467
1468  fail:
1469         mptscsih_freeChainBuffers(ioc, my_idx);
1470         mpt_free_msg_frame(ioc, mf);
1471         return SCSI_MLQUEUE_HOST_BUSY;
1472 }
1473
1474 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1475 /*
1476  *      mptscsih_freeChainBuffers - Function to free chain buffers associated
1477  *      with a SCSI IO request
1478  *      @hd: Pointer to the MPT_SCSI_HOST instance
1479  *      @req_idx: Index of the SCSI IO request frame.
1480  *
1481  *      Called if SG chain buffer allocation fails and mptscsih callbacks.
1482  *      No return.
1483  */
1484 static void
1485 mptscsih_freeChainBuffers(MPT_ADAPTER *ioc, int req_idx)
1486 {
1487         MPT_FRAME_HDR *chain;
1488         unsigned long flags;
1489         int chain_idx;
1490         int next;
1491
1492         /* Get the first chain index and reset
1493          * tracker state.
1494          */
1495         chain_idx = ioc->ReqToChain[req_idx];
1496         ioc->ReqToChain[req_idx] = MPT_HOST_NO_CHAIN;
1497
1498         while (chain_idx != MPT_HOST_NO_CHAIN) {
1499
1500                 /* Save the next chain buffer index */
1501                 next = ioc->ChainToChain[chain_idx];
1502
1503                 /* Free this chain buffer and reset
1504                  * tracker
1505                  */
1506                 ioc->ChainToChain[chain_idx] = MPT_HOST_NO_CHAIN;
1507
1508                 chain = (MPT_FRAME_HDR *) (ioc->ChainBuffer
1509                                         + (chain_idx * ioc->req_sz));
1510
1511                 spin_lock_irqsave(&ioc->FreeQlock, flags);
1512                 list_add_tail(&chain->u.frame.linkage.list, &ioc->FreeChainQ);
1513                 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1514
1515                 dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT "FreeChainBuffers (index %d)\n",
1516                                 ioc->name, chain_idx));
1517
1518                 /* handle next */
1519                 chain_idx = next;
1520         }
1521         return;
1522 }
1523
1524 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1525 /*
1526  *      Reset Handling
1527  */
1528
1529 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1530 /**
1531  *      mptscsih_TMHandler - Generic handler for SCSI Task Management.
1532  *      @hd: Pointer to MPT SCSI HOST structure
1533  *      @type: Task Management type
1534  *      @channel: channel number for task management
1535  *      @id: Logical Target ID for reset (if appropriate)
1536  *      @lun: Logical Unit for reset (if appropriate)
1537  *      @ctx2abort: Context for the task to be aborted (if appropriate)
1538  *      @timeout: timeout for task management control
1539  *
1540  *      Fall through to mpt_HardResetHandler if: not operational, too many
1541  *      failed TM requests or handshake failure.
1542  *
1543  *      Remark: Currently invoked from a non-interrupt thread (_bh).
1544  *
1545  *      Note: With old EH code, at most 1 SCSI TaskMgmt function per IOC
1546  *      will be active.
1547  *
1548  *      Returns 0 for SUCCESS, or %FAILED.
1549  **/
1550 int
1551 mptscsih_TMHandler(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun, int ctx2abort, ulong timeout)
1552 {
1553         MPT_ADAPTER     *ioc;
1554         int              rc = -1;
1555         u32              ioc_raw_state;
1556         unsigned long    flags;
1557
1558         ioc = hd->ioc;
1559         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TMHandler Entered!\n", ioc->name));
1560
1561         // SJR - CHECKME - Can we avoid this here?
1562         // (mpt_HardResetHandler has this check...)
1563         spin_lock_irqsave(&ioc->diagLock, flags);
1564         if ((ioc->diagPending) || (ioc->alt_ioc && ioc->alt_ioc->diagPending)) {
1565                 spin_unlock_irqrestore(&ioc->diagLock, flags);
1566                 return FAILED;
1567         }
1568         spin_unlock_irqrestore(&ioc->diagLock, flags);
1569
1570         /*  Wait a fixed amount of time for the TM pending flag to be cleared.
1571          *  If we time out and not bus reset, then we return a FAILED status
1572          *  to the caller.
1573          *  The call to mptscsih_tm_pending_wait() will set the pending flag
1574          *  if we are
1575          *  successful. Otherwise, reload the FW.
1576          */
1577         if (mptscsih_tm_pending_wait(hd) == FAILED) {
1578                 if (type == MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK) {
1579                         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TMHandler abort: "
1580                            "Timed out waiting for last TM (%d) to complete! \n",
1581                            ioc->name, hd->tmPending));
1582                         return FAILED;
1583                 } else if (type == MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET) {
1584                         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TMHandler target "
1585                                 "reset: Timed out waiting for last TM (%d) "
1586                                 "to complete! \n", ioc->name,
1587                                 hd->tmPending));
1588                         return FAILED;
1589                 } else if (type == MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS) {
1590                         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TMHandler bus reset: "
1591                            "Timed out waiting for last TM (%d) to complete! \n",
1592                           ioc->name, hd->tmPending));
1593                         return FAILED;
1594                 }
1595         } else {
1596                 spin_lock_irqsave(&ioc->FreeQlock, flags);
1597                 hd->tmPending |=  (1 << type);
1598                 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1599         }
1600
1601         ioc_raw_state = mpt_GetIocState(ioc, 0);
1602
1603         if ((ioc_raw_state & MPI_IOC_STATE_MASK) != MPI_IOC_STATE_OPERATIONAL) {
1604                 printk(MYIOC_s_WARN_FMT
1605                         "TM Handler for type=%x: IOC Not operational (0x%x)!\n",
1606                         ioc->name, type, ioc_raw_state);
1607                 printk(MYIOC_s_WARN_FMT " Issuing HardReset!!\n", ioc->name);
1608                 if (mpt_HardResetHandler(ioc, CAN_SLEEP) < 0)
1609                         printk(MYIOC_s_WARN_FMT "TMHandler: HardReset "
1610                             "FAILED!!\n", ioc->name);
1611                 return FAILED;
1612         }
1613
1614         if (ioc_raw_state & MPI_DOORBELL_ACTIVE) {
1615                 printk(MYIOC_s_WARN_FMT
1616                         "TM Handler for type=%x: ioc_state: "
1617                         "DOORBELL_ACTIVE (0x%x)!\n",
1618                         ioc->name, type, ioc_raw_state);
1619                 return FAILED;
1620         }
1621
1622         /* Isse the Task Mgmt request.
1623          */
1624         if (hd->hard_resets < -1)
1625                 hd->hard_resets++;
1626
1627         rc = mptscsih_IssueTaskMgmt(hd, type, channel, id, lun,
1628             ctx2abort, timeout);
1629         if (rc)
1630                 printk(MYIOC_s_INFO_FMT "Issue of TaskMgmt failed!\n",
1631                        ioc->name);
1632         else
1633                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Issue of TaskMgmt Successful!\n",
1634                            ioc->name));
1635
1636         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1637                         "TMHandler rc = %d!\n", ioc->name, rc));
1638
1639         return rc;
1640 }
1641
1642
1643 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1644 /**
1645  *      mptscsih_IssueTaskMgmt - Generic send Task Management function.
1646  *      @hd: Pointer to MPT_SCSI_HOST structure
1647  *      @type: Task Management type
1648  *      @channel: channel number for task management
1649  *      @id: Logical Target ID for reset (if appropriate)
1650  *      @lun: Logical Unit for reset (if appropriate)
1651  *      @ctx2abort: Context for the task to be aborted (if appropriate)
1652  *      @timeout: timeout for task management control
1653  *
1654  *      Remark: _HardResetHandler can be invoked from an interrupt thread (timer)
1655  *      or a non-interrupt thread.  In the former, must not call schedule().
1656  *
1657  *      Not all fields are meaningfull for all task types.
1658  *
1659  *      Returns 0 for SUCCESS, or FAILED.
1660  *
1661  **/
1662 static int
1663 mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun, int ctx2abort, ulong timeout)
1664 {
1665         MPT_FRAME_HDR   *mf;
1666         SCSITaskMgmt_t  *pScsiTm;
1667         int              ii;
1668         int              retval;
1669         MPT_ADAPTER     *ioc = hd->ioc;
1670
1671         /* Return Fail to calling function if no message frames available.
1672          */
1673         if ((mf = mpt_get_msg_frame(ioc->TaskCtx, ioc)) == NULL) {
1674                 dfailprintk(ioc, printk(MYIOC_s_ERR_FMT "IssueTaskMgmt, no msg frames!!\n",
1675                                 ioc->name));
1676                 return FAILED;
1677         }
1678         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "IssueTaskMgmt request @ %p\n",
1679                         ioc->name, mf));
1680
1681         /* Format the Request
1682          */
1683         pScsiTm = (SCSITaskMgmt_t *) mf;
1684         pScsiTm->TargetID = id;
1685         pScsiTm->Bus = channel;
1686         pScsiTm->ChainOffset = 0;
1687         pScsiTm->Function = MPI_FUNCTION_SCSI_TASK_MGMT;
1688
1689         pScsiTm->Reserved = 0;
1690         pScsiTm->TaskType = type;
1691         pScsiTm->Reserved1 = 0;
1692         pScsiTm->MsgFlags = (type == MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS)
1693                     ? MPI_SCSITASKMGMT_MSGFLAGS_LIPRESET_RESET_OPTION : 0;
1694
1695         int_to_scsilun(lun, (struct scsi_lun *)pScsiTm->LUN);
1696
1697         for (ii=0; ii < 7; ii++)
1698                 pScsiTm->Reserved2[ii] = 0;
1699
1700         pScsiTm->TaskMsgContext = ctx2abort;
1701
1702         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "IssueTaskMgmt: ctx2abort (0x%08x) "
1703                 "type=%d\n", ioc->name, ctx2abort, type));
1704
1705         DBG_DUMP_TM_REQUEST_FRAME(ioc, (u32 *)pScsiTm);
1706
1707         if ((ioc->facts.IOCCapabilities & MPI_IOCFACTS_CAPABILITY_HIGH_PRI_Q) &&
1708             (ioc->facts.MsgVersion >= MPI_VERSION_01_05))
1709                 mpt_put_msg_frame_hi_pri(ioc->TaskCtx, ioc, mf);
1710         else {
1711                 retval = mpt_send_handshake_request(ioc->TaskCtx, ioc,
1712                         sizeof(SCSITaskMgmt_t), (u32*)pScsiTm, CAN_SLEEP);
1713                 if (retval) {
1714                         dfailprintk(ioc, printk(MYIOC_s_ERR_FMT "send_handshake FAILED!"
1715                         " (hd %p, ioc %p, mf %p, rc=%d) \n", ioc->name, hd,
1716                         ioc, mf, retval));
1717                         goto fail_out;
1718                 }
1719         }
1720
1721         if(mptscsih_tm_wait_for_completion(hd, timeout) == FAILED) {
1722                 dfailprintk(ioc, printk(MYIOC_s_ERR_FMT "task management request TIMED OUT!"
1723                         " (hd %p, ioc %p, mf %p) \n", ioc->name, hd,
1724                         ioc, mf));
1725                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Calling HardReset! \n",
1726                          ioc->name));
1727                 retval = mpt_HardResetHandler(ioc, CAN_SLEEP);
1728                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rc=%d \n",
1729                          ioc->name, retval));
1730                 goto fail_out;
1731         }
1732
1733         /*
1734          * Handle success case, see if theres a non-zero ioc_status.
1735          */
1736         if (hd->tm_iocstatus == MPI_IOCSTATUS_SUCCESS ||
1737            hd->tm_iocstatus == MPI_IOCSTATUS_SCSI_TASK_TERMINATED ||
1738            hd->tm_iocstatus == MPI_IOCSTATUS_SCSI_IOC_TERMINATED)
1739                 retval = 0;
1740         else
1741                 retval = FAILED;
1742
1743         return retval;
1744
1745  fail_out:
1746
1747         /*
1748          * Free task management mf, and corresponding tm flags
1749          */
1750         mpt_free_msg_frame(ioc, mf);
1751         hd->tmPending = 0;
1752         hd->tmState = TM_STATE_NONE;
1753         return FAILED;
1754 }
1755
1756 static int
1757 mptscsih_get_tm_timeout(MPT_ADAPTER *ioc)
1758 {
1759         switch (ioc->bus_type) {
1760         case FC:
1761                 return 40;
1762         case SAS:
1763         case SPI:
1764         default:
1765                 return 10;
1766         }
1767 }
1768
1769 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1770 /**
1771  *      mptscsih_abort - Abort linux scsi_cmnd routine, new_eh variant
1772  *      @SCpnt: Pointer to scsi_cmnd structure, IO to be aborted
1773  *
1774  *      (linux scsi_host_template.eh_abort_handler routine)
1775  *
1776  *      Returns SUCCESS or FAILED.
1777  **/
1778 int
1779 mptscsih_abort(struct scsi_cmnd * SCpnt)
1780 {
1781         MPT_SCSI_HOST   *hd;
1782         MPT_FRAME_HDR   *mf;
1783         u32              ctx2abort;
1784         int              scpnt_idx;
1785         int              retval;
1786         VirtDevice       *vdevice;
1787         ulong            sn = SCpnt->serial_number;
1788         MPT_ADAPTER     *ioc;
1789
1790         /* If we can't locate our host adapter structure, return FAILED status.
1791          */
1792         if ((hd = shost_priv(SCpnt->device->host)) == NULL) {
1793                 SCpnt->result = DID_RESET << 16;
1794                 SCpnt->scsi_done(SCpnt);
1795                 printk(KERN_ERR MYNAM ": task abort: "
1796                     "can't locate host! (sc=%p)\n", SCpnt);
1797                 return FAILED;
1798         }
1799
1800         ioc = hd->ioc;
1801         printk(MYIOC_s_INFO_FMT "attempting task abort! (sc=%p)\n",
1802                ioc->name, SCpnt);
1803         scsi_print_command(SCpnt);
1804
1805         vdevice = SCpnt->device->hostdata;
1806         if (!vdevice || !vdevice->vtarget) {
1807                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1808                     "task abort: device has been deleted (sc=%p)\n",
1809                     ioc->name, SCpnt));
1810                 SCpnt->result = DID_NO_CONNECT << 16;
1811                 SCpnt->scsi_done(SCpnt);
1812                 retval = 0;
1813                 goto out;
1814         }
1815
1816         /* Task aborts are not supported for hidden raid components.
1817          */
1818         if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1819                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1820                     "task abort: hidden raid component (sc=%p)\n",
1821                     ioc->name, SCpnt));
1822                 SCpnt->result = DID_RESET << 16;
1823                 retval = FAILED;
1824                 goto out;
1825         }
1826
1827         /* Find this command
1828          */
1829         if ((scpnt_idx = SCPNT_TO_LOOKUP_IDX(ioc, SCpnt)) < 0) {
1830                 /* Cmd not found in ScsiLookup.
1831                  * Do OS callback.
1832                  */
1833                 SCpnt->result = DID_RESET << 16;
1834                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "task abort: "
1835                    "Command not in the active list! (sc=%p)\n", ioc->name,
1836                    SCpnt));
1837                 retval = 0;
1838                 goto out;
1839         }
1840
1841         if (hd->resetPending) {
1842                 retval = FAILED;
1843                 goto out;
1844         }
1845
1846         if (hd->timeouts < -1)
1847                 hd->timeouts++;
1848
1849         /* Most important!  Set TaskMsgContext to SCpnt's MsgContext!
1850          * (the IO to be ABORT'd)
1851          *
1852          * NOTE: Since we do not byteswap MsgContext, we do not
1853          *       swap it here either.  It is an opaque cookie to
1854          *       the controller, so it does not matter. -DaveM
1855          */
1856         mf = MPT_INDEX_2_MFPTR(ioc, scpnt_idx);
1857         ctx2abort = mf->u.frame.hwhdr.msgctxu.MsgContext;
1858
1859         hd->abortSCpnt = SCpnt;
1860
1861         retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
1862             vdevice->vtarget->channel, vdevice->vtarget->id, vdevice->lun,
1863             ctx2abort, mptscsih_get_tm_timeout(ioc));
1864
1865         if (SCPNT_TO_LOOKUP_IDX(ioc, SCpnt) == scpnt_idx &&
1866             SCpnt->serial_number == sn)
1867                 retval = FAILED;
1868
1869  out:
1870         printk(MYIOC_s_INFO_FMT "task abort: %s (sc=%p)\n",
1871             ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1872
1873         if (retval == 0)
1874                 return SUCCESS;
1875         else
1876                 return FAILED;
1877 }
1878
1879 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1880 /**
1881  *      mptscsih_dev_reset - Perform a SCSI TARGET_RESET!  new_eh variant
1882  *      @SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1883  *
1884  *      (linux scsi_host_template.eh_dev_reset_handler routine)
1885  *
1886  *      Returns SUCCESS or FAILED.
1887  **/
1888 int
1889 mptscsih_dev_reset(struct scsi_cmnd * SCpnt)
1890 {
1891         MPT_SCSI_HOST   *hd;
1892         int              retval;
1893         VirtDevice       *vdevice;
1894         MPT_ADAPTER     *ioc;
1895
1896         /* If we can't locate our host adapter structure, return FAILED status.
1897          */
1898         if ((hd = shost_priv(SCpnt->device->host)) == NULL){
1899                 printk(KERN_ERR MYNAM ": target reset: "
1900                    "Can't locate host! (sc=%p)\n", SCpnt);
1901                 return FAILED;
1902         }
1903
1904         ioc = hd->ioc;
1905         printk(MYIOC_s_INFO_FMT "attempting target reset! (sc=%p)\n",
1906                ioc->name, SCpnt);
1907         scsi_print_command(SCpnt);
1908
1909         if (hd->resetPending) {
1910                 retval = FAILED;
1911                 goto out;
1912         }
1913
1914         vdevice = SCpnt->device->hostdata;
1915         if (!vdevice || !vdevice->vtarget) {
1916                 retval = 0;
1917                 goto out;
1918         }
1919
1920         /* Target reset to hidden raid component is not supported
1921          */
1922         if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1923                 retval = FAILED;
1924                 goto out;
1925         }
1926
1927         retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
1928             vdevice->vtarget->channel, vdevice->vtarget->id, 0, 0,
1929             mptscsih_get_tm_timeout(ioc));
1930
1931  out:
1932         printk (MYIOC_s_INFO_FMT "target reset: %s (sc=%p)\n",
1933             ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1934
1935         if (retval == 0)
1936                 return SUCCESS;
1937         else
1938                 return FAILED;
1939 }
1940
1941
1942 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1943 /**
1944  *      mptscsih_bus_reset - Perform a SCSI BUS_RESET!  new_eh variant
1945  *      @SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1946  *
1947  *      (linux scsi_host_template.eh_bus_reset_handler routine)
1948  *
1949  *      Returns SUCCESS or FAILED.
1950  **/
1951 int
1952 mptscsih_bus_reset(struct scsi_cmnd * SCpnt)
1953 {
1954         MPT_SCSI_HOST   *hd;
1955         int              retval;
1956         VirtDevice       *vdevice;
1957         MPT_ADAPTER     *ioc;
1958
1959         /* If we can't locate our host adapter structure, return FAILED status.
1960          */
1961         if ((hd = shost_priv(SCpnt->device->host)) == NULL){
1962                 printk(KERN_ERR MYNAM ": bus reset: "
1963                    "Can't locate host! (sc=%p)\n", SCpnt);
1964                 return FAILED;
1965         }
1966
1967         ioc = hd->ioc;
1968         printk(MYIOC_s_INFO_FMT "attempting bus reset! (sc=%p)\n",
1969                ioc->name, SCpnt);
1970         scsi_print_command(SCpnt);
1971
1972         if (hd->timeouts < -1)
1973                 hd->timeouts++;
1974
1975         vdevice = SCpnt->device->hostdata;
1976         retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
1977             vdevice->vtarget->channel, 0, 0, 0, mptscsih_get_tm_timeout(ioc));
1978
1979         printk(MYIOC_s_INFO_FMT "bus reset: %s (sc=%p)\n",
1980             ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1981
1982         if (retval == 0)
1983                 return SUCCESS;
1984         else
1985                 return FAILED;
1986 }
1987
1988 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1989 /**
1990  *      mptscsih_host_reset - Perform a SCSI host adapter RESET (new_eh variant)
1991  *      @SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1992  *
1993  *      (linux scsi_host_template.eh_host_reset_handler routine)
1994  *
1995  *      Returns SUCCESS or FAILED.
1996  */
1997 int
1998 mptscsih_host_reset(struct scsi_cmnd *SCpnt)
1999 {
2000         MPT_SCSI_HOST *  hd;
2001         int              retval;
2002         MPT_ADAPTER     *ioc;
2003
2004         /*  If we can't locate the host to reset, then we failed. */
2005         if ((hd = shost_priv(SCpnt->device->host)) == NULL){
2006                 printk(KERN_ERR MYNAM ": host reset: "
2007                     "Can't locate host! (sc=%p)\n", SCpnt);
2008                 return FAILED;
2009         }
2010
2011         /* make sure we have no outstanding commands at this stage */
2012         mptscsih_flush_running_cmds(hd);
2013
2014         ioc = hd->ioc;
2015         printk(MYIOC_s_INFO_FMT "attempting host reset! (sc=%p)\n",
2016             ioc->name, SCpnt);
2017
2018         /*  If our attempts to reset the host failed, then return a failed
2019          *  status.  The host will be taken off line by the SCSI mid-layer.
2020          */
2021         if (mpt_HardResetHandler(ioc, CAN_SLEEP) < 0) {
2022                 retval = FAILED;
2023         } else {
2024                 /*  Make sure TM pending is cleared and TM state is set to
2025                  *  NONE.
2026                  */
2027                 retval = 0;
2028                 hd->tmPending = 0;
2029                 hd->tmState = TM_STATE_NONE;
2030         }
2031
2032         printk(MYIOC_s_INFO_FMT "host reset: %s (sc=%p)\n",
2033             ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
2034
2035         return retval;
2036 }
2037
2038 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2039 /**
2040  *      mptscsih_tm_pending_wait - wait for pending task management request to complete
2041  *      @hd: Pointer to MPT host structure.
2042  *
2043  *      Returns {SUCCESS,FAILED}.
2044  */
2045 static int
2046 mptscsih_tm_pending_wait(MPT_SCSI_HOST * hd)
2047 {
2048         unsigned long  flags;
2049         int            loop_count = 4 * 10;  /* Wait 10 seconds */
2050         int            status = FAILED;
2051         MPT_ADAPTER     *ioc = hd->ioc;
2052
2053         do {
2054                 spin_lock_irqsave(&ioc->FreeQlock, flags);
2055                 if (hd->tmState == TM_STATE_NONE) {
2056                         hd->tmState = TM_STATE_IN_PROGRESS;
2057                         hd->tmPending = 1;
2058                         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2059                         status = SUCCESS;
2060                         break;
2061                 }
2062                 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2063                 msleep(250);
2064         } while (--loop_count);
2065
2066         return status;
2067 }
2068
2069 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2070 /**
2071  *      mptscsih_tm_wait_for_completion - wait for completion of TM task
2072  *      @hd: Pointer to MPT host structure.
2073  *      @timeout: timeout value
2074  *
2075  *      Returns {SUCCESS,FAILED}.
2076  */
2077 static int
2078 mptscsih_tm_wait_for_completion(MPT_SCSI_HOST * hd, ulong timeout )
2079 {
2080         unsigned long  flags;
2081         int            loop_count = 4 * timeout;
2082         int            status = FAILED;
2083         MPT_ADAPTER     *ioc = hd->ioc;
2084
2085         do {
2086                 spin_lock_irqsave(&ioc->FreeQlock, flags);
2087                 if(hd->tmPending == 0) {
2088                         status = SUCCESS;
2089                         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2090                         break;
2091                 }
2092                 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2093                 msleep(250);
2094         } while (--loop_count);
2095
2096         return status;
2097 }
2098
2099 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2100 static void
2101 mptscsih_taskmgmt_response_code(MPT_ADAPTER *ioc, u8 response_code)
2102 {
2103         char *desc;
2104
2105         switch (response_code) {
2106         case MPI_SCSITASKMGMT_RSP_TM_COMPLETE:
2107                 desc = "The task completed.";
2108                 break;
2109         case MPI_SCSITASKMGMT_RSP_INVALID_FRAME:
2110                 desc = "The IOC received an invalid frame status.";
2111                 break;
2112         case MPI_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2113                 desc = "The task type is not supported.";
2114                 break;
2115         case MPI_SCSITASKMGMT_RSP_TM_FAILED:
2116                 desc = "The requested task failed.";
2117                 break;
2118         case MPI_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2119                 desc = "The task completed successfully.";
2120                 break;
2121         case MPI_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2122                 desc = "The LUN request is invalid.";
2123                 break;
2124         case MPI_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2125                 desc = "The task is in the IOC queue and has not been sent to target.";
2126                 break;
2127         default:
2128                 desc = "unknown";
2129                 break;
2130         }
2131         printk(MYIOC_s_INFO_FMT "Response Code(0x%08x): F/W: %s\n",
2132                 ioc->name, response_code, desc);
2133 }
2134
2135 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2136 /**
2137  *      mptscsih_taskmgmt_complete - Registered with Fusion MPT base driver
2138  *      @ioc: Pointer to MPT_ADAPTER structure
2139  *      @mf: Pointer to SCSI task mgmt request frame
2140  *      @mr: Pointer to SCSI task mgmt reply frame
2141  *
2142  *      This routine is called from mptbase.c::mpt_interrupt() at the completion
2143  *      of any SCSI task management request.
2144  *      This routine is registered with the MPT (base) driver at driver
2145  *      load/init time via the mpt_register() API call.
2146  *
2147  *      Returns 1 indicating alloc'd request frame ptr should be freed.
2148  **/
2149 int
2150 mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
2151 {
2152         SCSITaskMgmtReply_t     *pScsiTmReply;
2153         SCSITaskMgmt_t          *pScsiTmReq;
2154         MPT_SCSI_HOST           *hd;
2155         unsigned long            flags;
2156         u16                      iocstatus;
2157         u8                       tmType;
2158         u32                      termination_count;
2159
2160         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TaskMgmt completed (mf=%p,mr=%p)\n",
2161             ioc->name, mf, mr));
2162         if (!ioc->sh) {
2163                 dtmprintk(ioc, printk(MYIOC_s_WARN_FMT
2164                     "TaskMgmt Complete: NULL Scsi Host Ptr\n", ioc->name));
2165                 return 1;
2166         }
2167
2168         if (mr == NULL) {
2169                 dtmprintk(ioc, printk(MYIOC_s_WARN_FMT
2170                     "ERROR! TaskMgmt Reply: NULL Request %p\n", ioc->name, mf));
2171                 return 1;
2172         }
2173
2174         hd = shost_priv(ioc->sh);
2175         pScsiTmReply = (SCSITaskMgmtReply_t*)mr;
2176         pScsiTmReq = (SCSITaskMgmt_t*)mf;
2177         tmType = pScsiTmReq->TaskType;
2178         iocstatus = le16_to_cpu(pScsiTmReply->IOCStatus) & MPI_IOCSTATUS_MASK;
2179         termination_count = le32_to_cpu(pScsiTmReply->TerminationCount);
2180
2181         if (ioc->facts.MsgVersion >= MPI_VERSION_01_05 &&
2182             pScsiTmReply->ResponseCode)
2183                 mptscsih_taskmgmt_response_code(ioc,
2184                     pScsiTmReply->ResponseCode);
2185         DBG_DUMP_TM_REPLY_FRAME(ioc, (u32 *)pScsiTmReply);
2186
2187 #ifdef CONFIG_FUSION_LOGGING
2188         if ((ioc->debug_level & MPT_DEBUG_REPLY) ||
2189                                 (ioc->debug_level & MPT_DEBUG_TM ))
2190                 printk("%s: ha=%d [%d:%d:0] task_type=0x%02X "
2191                         "iocstatus=0x%04X\n\tloginfo=0x%08X response_code=0x%02X "
2192                         "term_cmnds=%d\n", __func__, ioc->id, pScsiTmReply->Bus,
2193                          pScsiTmReply->TargetID, pScsiTmReq->TaskType,
2194                         le16_to_cpu(pScsiTmReply->IOCStatus),
2195                         le32_to_cpu(pScsiTmReply->IOCLogInfo),pScsiTmReply->ResponseCode,
2196                         le32_to_cpu(pScsiTmReply->TerminationCount));
2197 #endif
2198         if (!iocstatus) {
2199                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT " TaskMgmt SUCCESS\n", ioc->name));
2200                         hd->abortSCpnt = NULL;
2201                 goto out;
2202         }
2203
2204         /* Error?  (anything non-zero?) */
2205
2206         /* clear flags and continue.
2207          */
2208         switch (tmType) {
2209
2210         case MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
2211                 if (termination_count == 1)
2212                         iocstatus = MPI_IOCSTATUS_SCSI_TASK_TERMINATED;
2213                 hd->abortSCpnt = NULL;
2214                 break;
2215
2216         case MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS:
2217
2218                 /* If an internal command is present
2219                  * or the TM failed - reload the FW.
2220                  * FC FW may respond FAILED to an ABORT
2221                  */
2222                 if (iocstatus == MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED ||
2223                     hd->cmdPtr)
2224                         if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0)
2225                                 printk(MYIOC_s_WARN_FMT " Firmware Reload FAILED!!\n", ioc->name);
2226                 break;
2227
2228         case MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
2229         default:
2230                 break;
2231         }
2232
2233  out:
2234         spin_lock_irqsave(&ioc->FreeQlock, flags);
2235         hd->tmPending = 0;
2236         hd->tmState = TM_STATE_NONE;
2237         hd->tm_iocstatus = iocstatus;
2238         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2239
2240         return 1;
2241 }
2242
2243 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2244 /*
2245  *      This is anyones guess quite frankly.
2246  */
2247 int
2248 mptscsih_bios_param(struct scsi_device * sdev, struct block_device *bdev,
2249                 sector_t capacity, int geom[])
2250 {
2251         int             heads;
2252         int             sectors;
2253         sector_t        cylinders;
2254         ulong           dummy;
2255
2256         heads = 64;
2257         sectors = 32;
2258
2259         dummy = heads * sectors;
2260         cylinders = capacity;
2261         sector_div(cylinders,dummy);
2262
2263         /*
2264          * Handle extended translation size for logical drives
2265          * > 1Gb
2266          */
2267         if ((ulong)capacity >= 0x200000) {
2268                 heads = 255;
2269                 sectors = 63;
2270                 dummy = heads * sectors;
2271                 cylinders = capacity;
2272                 sector_div(cylinders,dummy);
2273         }
2274
2275         /* return result */
2276         geom[0] = heads;
2277         geom[1] = sectors;
2278         geom[2] = cylinders;
2279
2280         return 0;
2281 }
2282
2283 /* Search IOC page 3 to determine if this is hidden physical disk
2284  *
2285  */
2286 int
2287 mptscsih_is_phys_disk(MPT_ADAPTER *ioc, u8 channel, u8 id)
2288 {
2289         struct inactive_raid_component_info *component_info;
2290         int i;
2291         int rc = 0;
2292
2293         if (!ioc->raid_data.pIocPg3)
2294                 goto out;
2295         for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
2296                 if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) &&
2297                     (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) {
2298                         rc = 1;
2299                         goto out;
2300                 }
2301         }
2302
2303         /*
2304          * Check inactive list for matching phys disks
2305          */
2306         if (list_empty(&ioc->raid_data.inactive_list))
2307                 goto out;
2308
2309         mutex_lock(&ioc->raid_data.inactive_list_mutex);
2310         list_for_each_entry(component_info, &ioc->raid_data.inactive_list,
2311             list) {
2312                 if ((component_info->d.PhysDiskID == id) &&
2313                     (component_info->d.PhysDiskBus == channel))
2314                         rc = 1;
2315         }
2316         mutex_unlock(&ioc->raid_data.inactive_list_mutex);
2317
2318  out:
2319         return rc;
2320 }
2321 EXPORT_SYMBOL(mptscsih_is_phys_disk);
2322
2323 u8
2324 mptscsih_raid_id_to_num(MPT_ADAPTER *ioc, u8 channel, u8 id)
2325 {
2326         struct inactive_raid_component_info *component_info;
2327         int i;
2328         int rc = -ENXIO;
2329
2330         if (!ioc->raid_data.pIocPg3)
2331                 goto out;
2332         for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
2333                 if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) &&
2334                     (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) {
2335                         rc = ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum;
2336                         goto out;
2337                 }
2338         }
2339
2340         /*
2341          * Check inactive list for matching phys disks
2342          */
2343         if (list_empty(&ioc->raid_data.inactive_list))
2344                 goto out;
2345
2346         mutex_lock(&ioc->raid_data.inactive_list_mutex);
2347         list_for_each_entry(component_info, &ioc->raid_data.inactive_list,
2348             list) {
2349                 if ((component_info->d.PhysDiskID == id) &&
2350                     (component_info->d.PhysDiskBus == channel))
2351                         rc = component_info->d.PhysDiskNum;
2352         }
2353         mutex_unlock(&ioc->raid_data.inactive_list_mutex);
2354
2355  out:
2356         return rc;
2357 }
2358 EXPORT_SYMBOL(mptscsih_raid_id_to_num);
2359
2360 /*
2361  *      OS entry point to allow for host driver to free allocated memory
2362  *      Called if no device present or device being unloaded
2363  */
2364 void
2365 mptscsih_slave_destroy(struct scsi_device *sdev)
2366 {
2367         struct Scsi_Host        *host = sdev->host;
2368         MPT_SCSI_HOST           *hd = shost_priv(host);
2369         VirtTarget              *vtarget;
2370         VirtDevice              *vdevice;
2371         struct scsi_target      *starget;
2372
2373         starget = scsi_target(sdev);
2374         vtarget = starget->hostdata;
2375         vdevice = sdev->hostdata;
2376
2377         mptscsih_search_running_cmds(hd, vdevice);
2378         vtarget->num_luns--;
2379         mptscsih_synchronize_cache(hd, vdevice);
2380         kfree(vdevice);
2381         sdev->hostdata = NULL;
2382 }
2383
2384 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2385 /*
2386  *      mptscsih_change_queue_depth - This function will set a devices queue depth
2387  *      @sdev: per scsi_device pointer
2388  *      @qdepth: requested queue depth
2389  *
2390  *      Adding support for new 'change_queue_depth' api.
2391 */
2392 int
2393 mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
2394 {
2395         MPT_SCSI_HOST           *hd = shost_priv(sdev->host);
2396         VirtTarget              *vtarget;
2397         struct scsi_target      *starget;
2398         int                     max_depth;
2399         int                     tagged;
2400         MPT_ADAPTER             *ioc = hd->ioc;
2401
2402         starget = scsi_target(sdev);
2403         vtarget = starget->hostdata;
2404
2405         if (ioc->bus_type == SPI) {
2406                 if (!(vtarget->tflags & MPT_TARGET_FLAGS_Q_YES))
2407                         max_depth = 1;
2408                 else if (sdev->type == TYPE_DISK &&
2409                          vtarget->minSyncFactor <= MPT_ULTRA160)
2410                         max_depth = MPT_SCSI_CMD_PER_DEV_HIGH;
2411                 else
2412                         max_depth = MPT_SCSI_CMD_PER_DEV_LOW;
2413         } else
2414                 max_depth = MPT_SCSI_CMD_PER_DEV_HIGH;
2415
2416         if (qdepth > max_depth)
2417                 qdepth = max_depth;
2418         if (qdepth == 1)
2419                 tagged = 0;
2420         else
2421                 tagged = MSG_SIMPLE_TAG;
2422
2423         scsi_adjust_queue_depth(sdev, tagged, qdepth);
2424         return sdev->queue_depth;
2425 }
2426
2427 /*
2428  *      OS entry point to adjust the queue_depths on a per-device basis.
2429  *      Called once per device the bus scan. Use it to force the queue_depth
2430  *      member to 1 if a device does not support Q tags.
2431  *      Return non-zero if fails.
2432  */
2433 int
2434 mptscsih_slave_configure(struct scsi_device *sdev)
2435 {
2436         struct Scsi_Host        *sh = sdev->host;
2437         VirtTarget              *vtarget;
2438         VirtDevice              *vdevice;
2439         struct scsi_target      *starget;
2440         MPT_SCSI_HOST           *hd = shost_priv(sh);
2441         MPT_ADAPTER             *ioc = hd->ioc;
2442
2443         starget = scsi_target(sdev);
2444         vtarget = starget->hostdata;
2445         vdevice = sdev->hostdata;
2446
2447         dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2448                 "device @ %p, channel=%d, id=%d, lun=%d\n",
2449                 ioc->name, sdev, sdev->channel, sdev->id, sdev->lun));
2450         if (ioc->bus_type == SPI)
2451                 dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2452                     "sdtr %d wdtr %d ppr %d inq length=%d\n",
2453                     ioc->name, sdev->sdtr, sdev->wdtr,
2454                     sdev->ppr, sdev->inquiry_len));
2455
2456         vdevice->configured_lun = 1;
2457         mptscsih_change_queue_depth(sdev, MPT_SCSI_CMD_PER_DEV_HIGH);
2458
2459         dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2460                 "Queue depth=%d, tflags=%x\n",
2461                 ioc->name, sdev->queue_depth, vtarget->tflags));
2462
2463         if (ioc->bus_type == SPI)
2464                 dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2465                     "negoFlags=%x, maxOffset=%x, SyncFactor=%x\n",
2466                     ioc->name, vtarget->negoFlags, vtarget->maxOffset,
2467                     vtarget->minSyncFactor));
2468
2469         dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2470                 "tagged %d, simple %d, ordered %d\n",
2471                 ioc->name,sdev->tagged_supported, sdev->simple_tags,
2472                 sdev->ordered_tags));
2473
2474         return 0;
2475 }
2476
2477 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2478 /*
2479  *  Private routines...
2480  */
2481
2482 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2483 /* Utility function to copy sense data from the scsi_cmnd buffer
2484  * to the FC and SCSI target structures.
2485  *
2486  */
2487 static void
2488 mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR *mf, SCSIIOReply_t *pScsiReply)
2489 {
2490         VirtDevice      *vdevice;
2491         SCSIIORequest_t *pReq;
2492         u32              sense_count = le32_to_cpu(pScsiReply->SenseCount);
2493         MPT_ADAPTER     *ioc = hd->ioc;
2494
2495         /* Get target structure
2496          */
2497         pReq = (SCSIIORequest_t *) mf;
2498         vdevice = sc->device->hostdata;
2499
2500         if (sense_count) {
2501                 u8 *sense_data;
2502                 int req_index;
2503
2504                 /* Copy the sense received into the scsi command block. */
2505                 req_index = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
2506                 sense_data = ((u8 *)ioc->sense_buf_pool + (req_index * MPT_SENSE_BUFFER_ALLOC));
2507                 memcpy(sc->sense_buffer, sense_data, SNS_LEN(sc));
2508
2509                 /* Log SMART data (asc = 0x5D, non-IM case only) if required.
2510                  */
2511                 if ((ioc->events) && (ioc->eventTypes & (1 << MPI_EVENT_SCSI_DEVICE_STATUS_CHANGE))) {
2512                         if ((sense_data[12] == 0x5D) && (vdevice->vtarget->raidVolume == 0)) {
2513                                 int idx;
2514
2515                                 idx = ioc->eventContext % MPTCTL_EVENT_LOG_SIZE;
2516                                 ioc->events[idx].event = MPI_EVENT_SCSI_DEVICE_STATUS_CHANGE;
2517                                 ioc->events[idx].eventContext = ioc->eventContext;
2518
2519                                 ioc->events[idx].data[0] = (pReq->LUN[1] << 24) |
2520                                         (MPI_EVENT_SCSI_DEV_STAT_RC_SMART_DATA << 16) |
2521                                         (sc->device->channel << 8) | sc->device->id;
2522
2523                                 ioc->events[idx].data[1] = (sense_data[13] << 8) | sense_data[12];
2524
2525                                 ioc->eventContext++;
2526                                 if (ioc->pcidev->vendor ==
2527                                     PCI_VENDOR_ID_IBM) {
2528                                         mptscsih_issue_sep_command(ioc,
2529                                             vdevice->vtarget, MPI_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
2530                                         vdevice->vtarget->tflags |=
2531                                             MPT_TARGET_FLAGS_LED_ON;
2532                                 }
2533                         }
2534                 }
2535         } else {
2536                 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Hmmm... SenseData len=0! (?)\n",
2537                                 ioc->name));
2538         }
2539 }
2540
2541 /**
2542  * mptscsih_get_scsi_lookup
2543  * @ioc: Pointer to MPT_ADAPTER structure
2544  * @i: index into the array
2545  *
2546  * retrieves scmd entry from ScsiLookup[] array list
2547  *
2548  * Returns the scsi_cmd pointer
2549  **/
2550 static struct scsi_cmnd *
2551 mptscsih_get_scsi_lookup(MPT_ADAPTER *ioc, int i)
2552 {
2553         unsigned long   flags;
2554         struct scsi_cmnd *scmd;
2555
2556         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2557         scmd = ioc->ScsiLookup[i];
2558         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2559
2560         return scmd;
2561 }
2562
2563 /**
2564  * mptscsih_getclear_scsi_lookup
2565  * @ioc: Pointer to MPT_ADAPTER structure
2566  * @i: index into the array
2567  *
2568  * retrieves and clears scmd entry from ScsiLookup[] array list
2569  *
2570  * Returns the scsi_cmd pointer
2571  **/
2572 static struct scsi_cmnd *
2573 mptscsih_getclear_scsi_lookup(MPT_ADAPTER *ioc, int i)
2574 {
2575         unsigned long   flags;
2576         struct scsi_cmnd *scmd;
2577
2578         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2579         scmd = ioc->ScsiLookup[i];
2580         ioc->ScsiLookup[i] = NULL;
2581         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2582
2583         return scmd;
2584 }
2585
2586 /**
2587  * mptscsih_set_scsi_lookup
2588  *
2589  * writes a scmd entry into the ScsiLookup[] array list
2590  *
2591  * @ioc: Pointer to MPT_ADAPTER structure
2592  * @i: index into the array
2593  * @scmd: scsi_cmnd pointer
2594  *
2595  **/
2596 static void
2597 mptscsih_set_scsi_lookup(MPT_ADAPTER *ioc, int i, struct scsi_cmnd *scmd)
2598 {
2599         unsigned long   flags;
2600
2601         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2602         ioc->ScsiLookup[i] = scmd;
2603         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2604 }
2605
2606 /**
2607  * SCPNT_TO_LOOKUP_IDX - searches for a given scmd in the ScsiLookup[] array list
2608  * @ioc: Pointer to MPT_ADAPTER structure
2609  * @sc: scsi_cmnd pointer
2610  */
2611 static int
2612 SCPNT_TO_LOOKUP_IDX(MPT_ADAPTER *ioc, struct scsi_cmnd *sc)
2613 {
2614         unsigned long   flags;
2615         int i, index=-1;
2616
2617         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2618         for (i = 0; i < ioc->req_depth; i++) {
2619                 if (ioc->ScsiLookup[i] == sc) {
2620                         index = i;
2621                         goto out;
2622                 }
2623         }
2624
2625  out:
2626         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2627         return index;
2628 }
2629
2630 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2631 int
2632 mptscsih_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
2633 {
2634         MPT_SCSI_HOST   *hd;
2635         unsigned long    flags;
2636
2637         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2638             ": IOC %s_reset routed to SCSI host driver!\n",
2639             ioc->name, reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
2640             reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
2641
2642         /* If a FW reload request arrives after base installed but
2643          * before all scsi hosts have been attached, then an alt_ioc
2644          * may have a NULL sh pointer.
2645          */
2646         if (ioc->sh == NULL || shost_priv(ioc->sh) == NULL)
2647                 return 0;
2648         else
2649                 hd = shost_priv(ioc->sh);
2650
2651         if (reset_phase == MPT_IOC_SETUP_RESET) {
2652                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Setup-Diag Reset\n", ioc->name));
2653
2654                 /* Clean Up:
2655                  * 1. Set Hard Reset Pending Flag
2656                  * All new commands go to doneQ
2657                  */
2658                 hd->resetPending = 1;
2659
2660         } else if (reset_phase == MPT_IOC_PRE_RESET) {
2661                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Pre-Diag Reset\n", ioc->name));
2662
2663                 /* 2. Flush running commands
2664                  *      Clean ScsiLookup (and associated memory)
2665                  *      AND clean mytaskQ
2666                  */
2667
2668                 /* 2b. Reply to OS all known outstanding I/O commands.
2669                  */
2670                 mptscsih_flush_running_cmds(hd);
2671
2672                 /* 2c. If there was an internal command that
2673                  * has not completed, configuration or io request,
2674                  * free these resources.
2675                  */
2676                 if (hd->cmdPtr) {
2677                         del_timer(&hd->timer);
2678                         mpt_free_msg_frame(ioc, hd->cmdPtr);
2679                 }
2680
2681                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Pre-Reset complete.\n", ioc->name));
2682
2683         } else {
2684                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Post-Diag Reset\n", ioc->name));
2685
2686                 /* Once a FW reload begins, all new OS commands are
2687                  * redirected to the doneQ w/ a reset status.
2688                  * Init all control structures.
2689                  */
2690
2691                 /* 2. Chain Buffer initialization
2692                  */
2693
2694                 /* 4. Renegotiate to all devices, if SPI
2695                  */
2696
2697                 /* 5. Enable new commands to be posted
2698                  */
2699                 spin_lock_irqsave(&ioc->FreeQlock, flags);
2700                 hd->tmPending = 0;
2701                 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2702                 hd->resetPending = 0;
2703                 hd->tmState = TM_STATE_NONE;
2704
2705                 /* 6. If there was an internal command,
2706                  * wake this process up.
2707                  */
2708                 if (hd->cmdPtr) {
2709                         /*
2710                          * Wake up the original calling thread
2711                          */
2712                         hd->pLocal = &hd->localReply;
2713                         hd->pLocal->completion = MPT_SCANDV_DID_RESET;
2714                         hd->scandv_wait_done = 1;
2715                         wake_up(&hd->scandv_waitq);
2716                         hd->cmdPtr = NULL;
2717                 }
2718
2719                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Post-Reset complete.\n", ioc->name));
2720
2721         }
2722
2723         return 1;               /* currently means nothing really */
2724 }
2725
2726 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2727 int
2728 mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
2729 {
2730         MPT_SCSI_HOST *hd;
2731         u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
2732
2733         devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
2734                         ioc->name, event));
2735
2736         if (ioc->sh == NULL ||
2737                 ((hd = shost_priv(ioc->sh)) == NULL))
2738                 return 1;
2739
2740         switch (event) {
2741         case MPI_EVENT_UNIT_ATTENTION:                  /* 03 */
2742                 /* FIXME! */
2743                 break;
2744         case MPI_EVENT_IOC_BUS_RESET:                   /* 04 */
2745         case MPI_EVENT_EXT_BUS_RESET:                   /* 05 */
2746                 if (hd && (ioc->bus_type == SPI) && (hd->soft_resets < -1))
2747                         hd->soft_resets++;
2748                 break;
2749         case MPI_EVENT_LOGOUT:                          /* 09 */
2750                 /* FIXME! */
2751                 break;
2752
2753         case MPI_EVENT_RESCAN:                          /* 06 */
2754                 break;
2755
2756                 /*
2757                  *  CHECKME! Don't think we need to do
2758                  *  anything for these, but...
2759                  */
2760         case MPI_EVENT_LINK_STATUS_CHANGE:              /* 07 */
2761         case MPI_EVENT_LOOP_STATE_CHANGE:               /* 08 */
2762                 /*
2763                  *  CHECKME!  Falling thru...
2764                  */
2765                 break;
2766
2767         case MPI_EVENT_INTEGRATED_RAID:                 /* 0B */
2768                 break;
2769
2770         case MPI_EVENT_NONE:                            /* 00 */
2771         case MPI_EVENT_LOG_DATA:                        /* 01 */
2772         case MPI_EVENT_STATE_CHANGE:                    /* 02 */
2773         case MPI_EVENT_EVENT_CHANGE:                    /* 0A */
2774         default:
2775                 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT ": Ignoring event (=%02Xh)\n",
2776                     ioc->name, event));
2777                 break;
2778         }
2779
2780         return 1;               /* currently means nothing really */
2781 }
2782
2783 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2784 /*
2785  *  Bus Scan and Domain Validation functionality ...
2786  */
2787
2788 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2789 /*
2790  *      mptscsih_scandv_complete - Scan and DV callback routine registered
2791  *      to Fustion MPT (base) driver.
2792  *
2793  *      @ioc: Pointer to MPT_ADAPTER structure
2794  *      @mf: Pointer to original MPT request frame
2795  *      @mr: Pointer to MPT reply frame (NULL if TurboReply)
2796  *
2797  *      This routine is called from mpt.c::mpt_interrupt() at the completion
2798  *      of any SCSI IO request.
2799  *      This routine is registered with the Fusion MPT (base) driver at driver
2800  *      load/init time via the mpt_register() API call.
2801  *
2802  *      Returns 1 indicating alloc'd request frame ptr should be freed.
2803  *
2804  *      Remark: Sets a completion code and (possibly) saves sense data
2805  *      in the IOC member localReply structure.
2806  *      Used ONLY for DV and other internal commands.
2807  */
2808 int
2809 mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
2810 {
2811         MPT_SCSI_HOST   *hd;
2812         SCSIIORequest_t *pReq;
2813         int              completionCode;
2814         u16              req_idx;
2815
2816         hd = shost_priv(ioc->sh);
2817
2818         if ((mf == NULL) ||
2819             (mf >= MPT_INDEX_2_MFPTR(ioc, ioc->req_depth))) {
2820                 printk(MYIOC_s_ERR_FMT
2821                         "ScanDvComplete, %s req frame ptr! (=%p)\n",
2822                                 ioc->name, mf?"BAD":"NULL", (void *) mf);
2823                 goto wakeup;
2824         }
2825
2826         del_timer(&hd->timer);
2827         req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
2828         mptscsih_set_scsi_lookup(ioc, req_idx, NULL);
2829         pReq = (SCSIIORequest_t *) mf;
2830
2831         if (mf != hd->cmdPtr) {
2832                 printk(MYIOC_s_WARN_FMT "ScanDvComplete (mf=%p, cmdPtr=%p, idx=%d)\n",
2833                                 ioc->name, (void *)mf, (void *) hd->cmdPtr, req_idx);
2834         }
2835         hd->cmdPtr = NULL;
2836
2837         ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScanDvComplete (mf=%p,mr=%p,idx=%d)\n",
2838                         ioc->name, mf, mr, req_idx));
2839
2840         hd->pLocal = &hd->localReply;
2841         hd->pLocal->scsiStatus = 0;
2842
2843         /* If target struct exists, clear sense valid flag.
2844          */
2845         if (mr == NULL) {
2846                 completionCode = MPT_SCANDV_GOOD;
2847         } else {
2848                 SCSIIOReply_t   *pReply;
2849                 u16              status;
2850                 u8               scsi_status;
2851
2852                 pReply = (SCSIIOReply_t *) mr;
2853
2854                 status = le16_to_cpu(pReply->IOCStatus) & MPI_IOCSTATUS_MASK;
2855                 scsi_status = pReply->SCSIStatus;
2856
2857
2858                 switch(status) {
2859
2860                 case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:       /* 0x0043 */
2861                         completionCode = MPT_SCANDV_SELECTION_TIMEOUT;
2862                         break;
2863
2864                 case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:          /* 0x0046 */
2865                 case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:        /* 0x0048 */
2866                 case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:         /* 0x004B */
2867                 case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:         /* 0x004C */
2868                         completionCode = MPT_SCANDV_DID_RESET;
2869                         break;
2870
2871                 case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:          /* 0x0045 */
2872                 case MPI_IOCSTATUS_SCSI_RECOVERED_ERROR:        /* 0x0040 */
2873                 case MPI_IOCSTATUS_SUCCESS:                     /* 0x0000 */
2874                         if (pReply->Function == MPI_FUNCTION_CONFIG) {
2875                                 ConfigReply_t *pr = (ConfigReply_t *)mr;
2876                                 completionCode = MPT_SCANDV_GOOD;
2877                                 hd->pLocal->header.PageVersion = pr->Header.PageVersion;
2878                                 hd->pLocal->header.PageLength = pr->Header.PageLength;
2879                                 hd->pLocal->header.PageNumber = pr->Header.PageNumber;
2880                                 hd->pLocal->header.PageType = pr->Header.PageType;
2881
2882                         } else if (pReply->Function == MPI_FUNCTION_RAID_ACTION) {
2883                                 /* If the RAID Volume request is successful,
2884                                  * return GOOD, else indicate that
2885                                  * some type of error occurred.
2886                                  */
2887                                 MpiRaidActionReply_t    *pr = (MpiRaidActionReply_t *)mr;
2888                                 if (le16_to_cpu(pr->ActionStatus) == MPI_RAID_ACTION_ASTATUS_SUCCESS)
2889                                         completionCode = MPT_SCANDV_GOOD;
2890                                 else
2891                                         completionCode = MPT_SCANDV_SOME_ERROR;
2892                                 memcpy(hd->pLocal->sense, pr, sizeof(hd->pLocal->sense));
2893
2894                         } else if (pReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_VALID) {
2895                                 u8              *sense_data;
2896                                 int              sz;
2897
2898                                 /* save sense data in global structure
2899                                  */
2900                                 completionCode = MPT_SCANDV_SENSE;
2901                                 hd->pLocal->scsiStatus = scsi_status;
2902                                 sense_data = ((u8 *)ioc->sense_buf_pool +
2903                                         (req_idx * MPT_SENSE_BUFFER_ALLOC));
2904
2905                                 sz = min_t(int, pReq->SenseBufferLength,
2906                                                         SCSI_STD_SENSE_BYTES);
2907                                 memcpy(hd->pLocal->sense, sense_data, sz);
2908
2909                                 ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "  Check Condition, sense ptr %p\n",
2910                                     ioc->name, sense_data));
2911                         } else if (pReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_FAILED) {
2912                                 if (pReq->CDB[0] == INQUIRY)
2913                                         completionCode = MPT_SCANDV_ISSUE_SENSE;
2914                                 else
2915                                         completionCode = MPT_SCANDV_DID_RESET;
2916                         }
2917                         else if (pReply->SCSIState & MPI_SCSI_STATE_NO_SCSI_STATUS)
2918                                 completionCode = MPT_SCANDV_DID_RESET;
2919                         else if (pReply->SCSIState & MPI_SCSI_STATE_TERMINATED)
2920                                 completionCode = MPT_SCANDV_DID_RESET;
2921                         else {
2922                                 completionCode = MPT_SCANDV_GOOD;
2923                                 hd->pLocal->scsiStatus = scsi_status;
2924                         }
2925                         break;
2926
2927                 case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:         /* 0x0047 */
2928                         if (pReply->SCSIState & MPI_SCSI_STATE_TERMINATED)
2929                                 completionCode = MPT_SCANDV_DID_RESET;
2930                         else
2931                                 completionCode = MPT_SCANDV_SOME_ERROR;
2932                         break;
2933
2934                 default:
2935                         completionCode = MPT_SCANDV_SOME_ERROR;
2936                         break;
2937
2938                 }       /* switch(status) */
2939
2940         } /* end of address reply case */
2941
2942         hd->pLocal->completion = completionCode;
2943
2944         /* MF and RF are freed in mpt_interrupt
2945          */
2946 wakeup:
2947         /* Free Chain buffers (will never chain) in scan or dv */
2948         //mptscsih_freeChainBuffers(ioc, req_idx);
2949
2950         /*
2951          * Wake up the original calling thread
2952          */
2953         hd->scandv_wait_done = 1;
2954         wake_up(&hd->scandv_waitq);
2955
2956         return 1;
2957 }
2958
2959 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2960 /*      mptscsih_timer_expired - Call back for timer process.
2961  *      Used only for dv functionality.
2962  *      @data: Pointer to MPT_SCSI_HOST recast as an unsigned long
2963  *
2964  */
2965 void
2966 mptscsih_timer_expired(unsigned long data)
2967 {
2968         MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *) data;
2969         MPT_ADAPTER     *ioc = hd->ioc;
2970
2971         ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Timer Expired! Cmd %p\n", ioc->name, hd->cmdPtr));
2972
2973         if (hd->cmdPtr) {
2974                 MPIHeader_t *cmd = (MPIHeader_t *)hd->cmdPtr;
2975
2976                 if (cmd->Function == MPI_FUNCTION_SCSI_IO_REQUEST) {
2977                         /* Desire to issue a task management request here.
2978                          * TM requests MUST be single threaded.
2979                          * If old eh code and no TM current, issue request.
2980                          * If new eh code, do nothing. Wait for OS cmd timeout
2981                          *      for bus reset.
2982                          */
2983                 } else {
2984                         /* Perform a FW reload */
2985                         if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0) {
2986                                 printk(MYIOC_s_WARN_FMT "Firmware Reload FAILED!\n", ioc->name);
2987                         }
2988                 }
2989         } else {
2990                 /* This should NEVER happen */
2991                 printk(MYIOC_s_WARN_FMT "Null cmdPtr!!!!\n", ioc->name);
2992         }
2993
2994         /* No more processing.
2995          * TM call will generate an interrupt for SCSI TM Management.
2996          * The FW will reply to all outstanding commands, callback will finish cleanup.
2997          * Hard reset clean-up will free all resources.
2998          */
2999         ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Timer Expired Complete!\n", ioc->name));
3000
3001         return;
3002 }
3003
3004
3005 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
3006 /**
3007  *      mptscsih_do_cmd - Do internal command.
3008  *      @hd: MPT_SCSI_HOST pointer
3009  *      @io: INTERNAL_CMD pointer.
3010  *
3011  *      Issue the specified internally generated command and do command
3012  *      specific cleanup. For bus scan / DV only.
3013  *      NOTES: If command is Inquiry and status is good,
3014  *      initialize a target structure, save the data
3015  *
3016  *      Remark: Single threaded access only.
3017  *
3018  *      Return:
3019  *              < 0 if an illegal command or no resources
3020  *
3021  *                 0 if good
3022  *
3023  *               > 0 if command complete but some type of completion error.
3024  */
3025 static int
3026 mptscsih_do_cmd(MPT_SCSI_HOST *hd, INTERNAL_CMD *io)
3027 {
3028         MPT_FRAME_HDR   *mf;
3029         SCSIIORequest_t *pScsiReq;
3030         SCSIIORequest_t  ReqCopy;
3031         int              my_idx, ii, dir;
3032         int              rc, cmdTimeout;
3033         int             in_isr;
3034         char             cmdLen;
3035         char             CDB[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
3036         char             cmd = io->cmd;
3037         MPT_ADAPTER     *ioc = hd->ioc;
3038
3039         in_isr = in_interrupt();
3040         if (in_isr) {
3041                 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Internal SCSI IO request not allowed in ISR context!\n",
3042                                         ioc->name));
3043                 return -EPERM;
3044         }
3045
3046
3047         /* Set command specific information
3048          */
3049         switch (cmd) {
3050         case INQUIRY:
3051                 cmdLen = 6;
3052                 dir = MPI_SCSIIO_CONTROL_READ;
3053                 CDB[0] = cmd;
3054                 CDB[4] = io->size;
3055                 cmdTimeout = 10;
3056                 break;
3057
3058         case TEST_UNIT_READY:
3059                 cmdLen = 6;
3060                 dir = MPI_SCSIIO_CONTROL_READ;
3061                 cmdTimeout = 10;
3062                 break;
3063
3064         case START_STOP:
3065                 cmdLen = 6;
3066                 dir = MPI_SCSIIO_CONTROL_READ;
3067                 CDB[0] = cmd;
3068                 CDB[4] = 1;     /*Spin up the disk */
3069                 cmdTimeout = 15;
3070                 break;
3071
3072         case REQUEST_SENSE:
3073                 cmdLen = 6;
3074                 CDB[0] = cmd;
3075                 CDB[4] = io->size;
3076                 dir = MPI_SCSIIO_CONTROL_READ;
3077                 cmdTimeout = 10;
3078                 break;
3079
3080         case READ_BUFFER:
3081                 cmdLen = 10;
3082                 dir = MPI_SCSIIO_CONTROL_READ;
3083                 CDB[0] = cmd;
3084                 if (io->flags & MPT_ICFLAG_ECHO) {
3085                         CDB[1] = 0x0A;
3086                 } else {
3087                         CDB[1] = 0x02;
3088                 }
3089
3090                 if (io->flags & MPT_ICFLAG_BUF_CAP) {
3091                         CDB[1] |= 0x01;
3092                 }
3093                 CDB[6] = (io->size >> 16) & 0xFF;
3094                 CDB[7] = (io->size >>  8) & 0xFF;
3095                 CDB[8] = io->size & 0xFF;
3096                 cmdTimeout = 10;
3097                 break;
3098
3099         case WRITE_BUFFER:
3100                 cmdLen = 10;
3101                 dir = MPI_SCSIIO_CONTROL_WRITE;
3102                 CDB[0] = cmd;
3103                 if (io->flags & MPT_ICFLAG_ECHO) {
3104                         CDB[1] = 0x0A;
3105                 } else {
3106                         CDB[1] = 0x02;
3107                 }
3108                 CDB[6] = (io->size >> 16) & 0xFF;
3109                 CDB[7] = (io->size >>  8) & 0xFF;
3110                 CDB[8] = io->size & 0xFF;
3111                 cmdTimeout = 10;
3112                 break;
3113
3114         case RESERVE:
3115                 cmdLen = 6;
3116                 dir = MPI_SCSIIO_CONTROL_READ;
3117                 CDB[0] = cmd;
3118                 cmdTimeout = 10;
3119                 break;
3120
3121         case RELEASE:
3122                 cmdLen = 6;
3123                 dir = MPI_SCSIIO_CONTROL_READ;
3124                 CDB[0] = cmd;
3125                 cmdTimeout = 10;
3126                 break;
3127
3128         case SYNCHRONIZE_CACHE:
3129                 cmdLen = 10;
3130                 dir = MPI_SCSIIO_CONTROL_READ;
3131                 CDB[0] = cmd;
3132 //              CDB[1] = 0x02;  /* set immediate bit */
3133                 cmdTimeout = 10;
3134                 break;
3135
3136         default:
3137                 /* Error Case */
3138                 return -EFAULT;
3139         }
3140
3141         /* Get and Populate a free Frame
3142          */
3143         if ((mf = mpt_get_msg_frame(ioc->InternalCtx, ioc)) == NULL) {
3144                 dfailprintk(ioc, printk(MYIOC_s_WARN_FMT "No msg frames!\n",
3145                     ioc->name));
3146                 return -EBUSY;
3147         }
3148
3149         pScsiReq = (SCSIIORequest_t *) mf;
3150
3151         /* Get the request index */
3152         my_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
3153         ADD_INDEX_LOG(my_idx); /* for debug */
3154
3155         if (io->flags & MPT_ICFLAG_PHYS_DISK) {
3156                 pScsiReq->TargetID = io->physDiskNum;
3157                 pScsiReq->Bus = 0;
3158                 pScsiReq->ChainOffset = 0;
3159                 pScsiReq->Function = MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
3160         } else {
3161                 pScsiReq->TargetID = io->id;
3162                 pScsiReq->Bus = io->channel;
3163                 pScsiReq->ChainOffset = 0;
3164                 pScsiReq->Function = MPI_FUNCTION_SCSI_IO_REQUEST;
3165         }
3166
3167         pScsiReq->CDBLength = cmdLen;
3168         pScsiReq->SenseBufferLength = MPT_SENSE_BUFFER_SIZE;
3169
3170         pScsiReq->Reserved = 0;
3171
3172         pScsiReq->MsgFlags = mpt_msg_flags();
3173         /* MsgContext set in mpt_get_msg_fram call  */
3174
3175         int_to_scsilun(io->lun, (struct scsi_lun *)pScsiReq->LUN);
3176
3177         if (io->flags & MPT_ICFLAG_TAGGED_CMD)
3178                 pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_SIMPLEQ);
3179         else
3180                 pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_UNTAGGED);
3181
3182         if (cmd == REQUEST_SENSE) {
3183                 pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_UNTAGGED);
3184                 ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Untagged! 0x%2x\n",
3185                         ioc->name, cmd));
3186         }
3187
3188         for (ii=0; ii < 16; ii++)
3189                 pScsiReq->CDB[ii] = CDB[ii];
3190
3191         pScsiReq->DataLength = cpu_to_le32(io->size);
3192         pScsiReq->SenseBufferLowAddr = cpu_to_le32(ioc->sense_buf_low_dma
3193                                            + (my_idx * MPT_SENSE_BUFFER_ALLOC));
3194
3195         ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Sending Command 0x%x for (%d:%d:%d)\n",
3196                         ioc->name, cmd, io->channel, io->id, io->lun));
3197
3198         if (dir == MPI_SCSIIO_CONTROL_READ) {
3199                 mpt_add_sge((char *) &pScsiReq->SGL,
3200                         MPT_SGE_FLAGS_SSIMPLE_READ | io->size,
3201                         io->data_dma);
3202         } else {
3203                 mpt_add_sge((char *) &pScsiReq->SGL,
3204                         MPT_SGE_FLAGS_SSIMPLE_WRITE | io->size,
3205                         io->data_dma);
3206         }
3207
3208         /* The ISR will free the request frame, but we need
3209          * the information to initialize the target. Duplicate.
3210          */
3211         memcpy(&ReqCopy, pScsiReq, sizeof(SCSIIORequest_t));
3212
3213         /* Issue this command after:
3214          *      finish init
3215          *      add timer
3216          * Wait until the reply has been received
3217          *  ScsiScanDvCtx callback function will
3218          *      set hd->pLocal;
3219          *      set scandv_wait_done and call wake_up
3220          */
3221         hd->pLocal = NULL;
3222         hd->timer.expires = jiffies + HZ*cmdTimeout;
3223         hd->scandv_wait_done = 0;
3224
3225         /* Save cmd pointer, for resource free if timeout or
3226          * FW reload occurs
3227          */
3228         hd->cmdPtr = mf;
3229
3230         add_timer(&hd->timer);
3231         mpt_put_msg_frame(ioc->InternalCtx, ioc, mf);
3232         wait_event(hd->scandv_waitq, hd->scandv_wait_done);
3233
3234         if (hd->pLocal) {
3235                 rc = hd->pLocal->completion;
3236                 hd->pLocal->skip = 0;
3237
3238                 /* Always set fatal error codes in some cases.
3239                  */
3240                 if (rc == MPT_SCANDV_SELECTION_TIMEOUT)
3241                         rc = -ENXIO;
3242                 else if (rc == MPT_SCANDV_SOME_ERROR)
3243                         rc =  -rc;
3244         } else {
3245                 rc = -EFAULT;
3246                 /* This should never happen. */
3247                 ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "_do_cmd: Null pLocal!!!\n",
3248                                 ioc->name));
3249         }
3250
3251         return rc;
3252 }
3253
3254 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
3255 /**
3256  *      mptscsih_synchronize_cache - Send SYNCHRONIZE_CACHE to all disks.
3257  *      @hd: Pointer to a SCSI HOST structure
3258  *      @vdevice: virtual target device
3259  *
3260  *      Uses the ISR, but with special processing.
3261  *      MUST be single-threaded.
3262  *
3263  */
3264 static void
3265 mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
3266 {
3267         INTERNAL_CMD             iocmd;
3268
3269         /* Ignore hidden raid components, this is handled when the command
3270          * is sent to the volume
3271          */
3272         if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT)
3273                 return;
3274
3275         if (vdevice->vtarget->type != TYPE_DISK || vdevice->vtarget->deleted ||
3276             !vdevice->configured_lun)
3277                 return;
3278
3279         /* Following parameters will not change
3280          * in this routine.
3281          */
3282         iocmd.cmd = SYNCHRONIZE_CACHE;
3283         iocmd.flags = 0;
3284         iocmd.physDiskNum = -1;
3285         iocmd.data = NULL;
3286         iocmd.data_dma = -1;
3287         iocmd.size = 0;
3288         iocmd.rsvd = iocmd.rsvd2 = 0;
3289         iocmd.channel = vdevice->vtarget->channel;
3290         iocmd.id = vdevice->vtarget->id;
3291         iocmd.lun = vdevice->lun;
3292
3293         mptscsih_do_cmd(hd, &iocmd);
3294 }
3295
3296 static ssize_t
3297 mptscsih_version_fw_show(struct device *dev, struct device_attribute *attr,
3298                          char *buf)
3299 {
3300         struct Scsi_Host *host = class_to_shost(dev);
3301         MPT_SCSI_HOST   *hd = shost_priv(host);
3302         MPT_ADAPTER *ioc = hd->ioc;
3303
3304         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
3305             (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
3306             (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
3307             (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
3308             ioc->facts.FWVersion.Word & 0x000000FF);
3309 }
3310 static DEVICE_ATTR(version_fw, S_IRUGO, mptscsih_version_fw_show, NULL);
3311
3312 static ssize_t
3313 mptscsih_version_bios_show(struct device *dev, struct device_attribute *attr,
3314                            char *buf)
3315 {
3316         struct Scsi_Host *host = class_to_shost(dev);
3317         MPT_SCSI_HOST   *hd = shost_priv(host);
3318         MPT_ADAPTER *ioc = hd->ioc;
3319
3320         return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
3321             (ioc->biosVersion & 0xFF000000) >> 24,
3322             (ioc->biosVersion & 0x00FF0000) >> 16,
3323             (ioc->biosVersion & 0x0000FF00) >> 8,
3324             ioc->biosVersion & 0x000000FF);
3325 }
3326 static DEVICE_ATTR(version_bios, S_IRUGO, mptscsih_version_bios_show, NULL);
3327
3328 static ssize_t
3329 mptscsih_version_mpi_show(struct device *dev, struct device_attribute *attr,
3330                           char *buf)
3331 {
3332         struct Scsi_Host *host = class_to_shost(dev);
3333         MPT_SCSI_HOST   *hd = shost_priv(host);
3334         MPT_ADAPTER *ioc = hd->ioc;
3335
3336         return snprintf(buf, PAGE_SIZE, "%03x\n", ioc->facts.MsgVersion);
3337 }
3338 static DEVICE_ATTR(version_mpi, S_IRUGO, mptscsih_version_mpi_show, NULL);
3339
3340 static ssize_t
3341 mptscsih_version_product_show(struct device *dev,
3342                               struct device_attribute *attr,
3343 char *buf)
3344 {
3345         struct Scsi_Host *host = class_to_shost(dev);
3346         MPT_SCSI_HOST   *hd = shost_priv(host);
3347         MPT_ADAPTER *ioc = hd->ioc;
3348
3349         return snprintf(buf, PAGE_SIZE, "%s\n", ioc->prod_name);
3350 }
3351 static DEVICE_ATTR(version_product, S_IRUGO,
3352     mptscsih_version_product_show, NULL);
3353
3354 static ssize_t
3355 mptscsih_version_nvdata_persistent_show(struct device *dev,
3356                                         struct device_attribute *attr,
3357                                         char *buf)
3358 {
3359         struct Scsi_Host *host = class_to_shost(dev);
3360         MPT_SCSI_HOST   *hd = shost_priv(host);
3361         MPT_ADAPTER *ioc = hd->ioc;
3362
3363         return snprintf(buf, PAGE_SIZE, "%02xh\n",
3364             ioc->nvdata_version_persistent);
3365 }
3366 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
3367     mptscsih_version_nvdata_persistent_show, NULL);
3368
3369 static ssize_t
3370 mptscsih_version_nvdata_default_show(struct device *dev,
3371                                      struct device_attribute *attr, char *buf)
3372 {
3373         struct Scsi_Host *host = class_to_shost(dev);
3374         MPT_SCSI_HOST   *hd = shost_priv(host);
3375         MPT_ADAPTER *ioc = hd->ioc;
3376
3377         return snprintf(buf, PAGE_SIZE, "%02xh\n",ioc->nvdata_version_default);
3378 }
3379 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
3380     mptscsih_version_nvdata_default_show, NULL);
3381
3382 static ssize_t
3383 mptscsih_board_name_show(struct device *dev, struct device_attribute *attr,
3384                          char *buf)
3385 {
3386         struct Scsi_Host *host = class_to_shost(dev);
3387         MPT_SCSI_HOST   *hd = shost_priv(host);
3388         MPT_ADAPTER *ioc = hd->ioc;
3389
3390         return snprintf(buf, PAGE_SIZE, "%s\n", ioc->board_name);
3391 }
3392 static DEVICE_ATTR(board_name, S_IRUGO, mptscsih_board_name_show, NULL);
3393
3394 static ssize_t
3395 mptscsih_board_assembly_show(struct device *dev,
3396                              struct device_attribute *attr, char *buf)
3397 {
3398         struct Scsi_Host *host = class_to_shost(dev);
3399         MPT_SCSI_HOST   *hd = shost_priv(host);
3400         MPT_ADAPTER *ioc = hd->ioc;
3401
3402         return snprintf(buf, PAGE_SIZE, "%s\n", ioc->board_assembly);
3403 }
3404 static DEVICE_ATTR(board_assembly, S_IRUGO,
3405     mptscsih_board_assembly_show, NULL);
3406
3407 static ssize_t
3408 mptscsih_board_tracer_show(struct device *dev, struct device_attribute *attr,
3409                            char *buf)
3410 {
3411         struct Scsi_Host *host = class_to_shost(dev);
3412         MPT_SCSI_HOST   *hd = shost_priv(host);
3413         MPT_ADAPTER *ioc = hd->ioc;
3414
3415         return snprintf(buf, PAGE_SIZE, "%s\n", ioc->board_tracer);
3416 }
3417 static DEVICE_ATTR(board_tracer, S_IRUGO,
3418     mptscsih_board_tracer_show, NULL);
3419
3420 static ssize_t
3421 mptscsih_io_delay_show(struct device *dev, struct device_attribute *attr,
3422                        char *buf)
3423 {
3424         struct Scsi_Host *host = class_to_shost(dev);
3425         MPT_SCSI_HOST   *hd = shost_priv(host);
3426         MPT_ADAPTER *ioc = hd->ioc;
3427
3428         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
3429 }
3430 static DEVICE_ATTR(io_delay, S_IRUGO,
3431     mptscsih_io_delay_show, NULL);
3432
3433 static ssize_t
3434 mptscsih_device_delay_show(struct device *dev, struct device_attribute *attr,
3435                            char *buf)
3436 {
3437         struct Scsi_Host *host = class_to_shost(dev);
3438         MPT_SCSI_HOST   *hd = shost_priv(host);
3439         MPT_ADAPTER *ioc = hd->ioc;
3440
3441         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
3442 }
3443 static DEVICE_ATTR(device_delay, S_IRUGO,
3444     mptscsih_device_delay_show, NULL);
3445
3446 static ssize_t
3447 mptscsih_debug_level_show(struct device *dev, struct device_attribute *attr,
3448                           char *buf)
3449 {
3450         struct Scsi_Host *host = class_to_shost(dev);
3451         MPT_SCSI_HOST   *hd = shost_priv(host);
3452         MPT_ADAPTER *ioc = hd->ioc;
3453
3454         return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->debug_level);
3455 }
3456 static ssize_t
3457 mptscsih_debug_level_store(struct device *dev, struct device_attribute *attr,
3458                            const char *buf, size_t count)
3459 {
3460         struct Scsi_Host *host = class_to_shost(dev);
3461         MPT_SCSI_HOST   *hd = shost_priv(host);
3462         MPT_ADAPTER *ioc = hd->ioc;
3463         int val = 0;
3464
3465         if (sscanf(buf, "%x", &val) != 1)
3466                 return -EINVAL;
3467
3468         ioc->debug_level = val;
3469         printk(MYIOC_s_INFO_FMT "debug_level=%08xh\n",
3470                                 ioc->name, ioc->debug_level);
3471         return strlen(buf);
3472 }
3473 static DEVICE_ATTR(debug_level, S_IRUGO | S_IWUSR,
3474         mptscsih_debug_level_show, mptscsih_debug_level_store);
3475
3476 struct device_attribute *mptscsih_host_attrs[] = {
3477         &dev_attr_version_fw,
3478         &dev_attr_version_bios,
3479         &dev_attr_version_mpi,
3480         &dev_attr_version_product,
3481         &dev_attr_version_nvdata_persistent,
3482         &dev_attr_version_nvdata_default,
3483         &dev_attr_board_name,
3484         &dev_attr_board_assembly,
3485         &dev_attr_board_tracer,
3486         &dev_attr_io_delay,
3487         &dev_attr_device_delay,
3488         &dev_attr_debug_level,
3489         NULL,
3490 };
3491 EXPORT_SYMBOL(mptscsih_host_attrs);
3492
3493 EXPORT_SYMBOL(mptscsih_remove);
3494 EXPORT_SYMBOL(mptscsih_shutdown);
3495 #ifdef CONFIG_PM
3496 EXPORT_SYMBOL(mptscsih_suspend);
3497 EXPORT_SYMBOL(mptscsih_resume);
3498 #endif
3499 EXPORT_SYMBOL(mptscsih_proc_info);
3500 EXPORT_SYMBOL(mptscsih_info);
3501 EXPORT_SYMBOL(mptscsih_qcmd);
3502 EXPORT_SYMBOL(mptscsih_slave_destroy);
3503 EXPORT_SYMBOL(mptscsih_slave_configure);
3504 EXPORT_SYMBOL(mptscsih_abort);
3505 EXPORT_SYMBOL(mptscsih_dev_reset);
3506 EXPORT_SYMBOL(mptscsih_bus_reset);
3507 EXPORT_SYMBOL(mptscsih_host_reset);
3508 EXPORT_SYMBOL(mptscsih_bios_param);
3509 EXPORT_SYMBOL(mptscsih_io_done);
3510 EXPORT_SYMBOL(mptscsih_taskmgmt_complete);
3511 EXPORT_SYMBOL(mptscsih_scandv_complete);
3512 EXPORT_SYMBOL(mptscsih_event_process);
3513 EXPORT_SYMBOL(mptscsih_ioc_reset);
3514 EXPORT_SYMBOL(mptscsih_change_queue_depth);
3515 EXPORT_SYMBOL(mptscsih_timer_expired);
3516 EXPORT_SYMBOL(mptscsih_TMHandler);
3517
3518 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/