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) 1999-2007 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,__FUNCTION__));
 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                 return 10;
1764         case SPI:
1765         default:
1766                 return 2;
1767         }
1768 }
1769
1770 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1771 /**
1772  *      mptscsih_abort - Abort linux scsi_cmnd routine, new_eh variant
1773  *      @SCpnt: Pointer to scsi_cmnd structure, IO to be aborted
1774  *
1775  *      (linux scsi_host_template.eh_abort_handler routine)
1776  *
1777  *      Returns SUCCESS or FAILED.
1778  **/
1779 int
1780 mptscsih_abort(struct scsi_cmnd * SCpnt)
1781 {
1782         MPT_SCSI_HOST   *hd;
1783         MPT_FRAME_HDR   *mf;
1784         u32              ctx2abort;
1785         int              scpnt_idx;
1786         int              retval;
1787         VirtDevice       *vdevice;
1788         ulong            sn = SCpnt->serial_number;
1789         MPT_ADAPTER     *ioc;
1790
1791         /* If we can't locate our host adapter structure, return FAILED status.
1792          */
1793         if ((hd = shost_priv(SCpnt->device->host)) == NULL) {
1794                 SCpnt->result = DID_RESET << 16;
1795                 SCpnt->scsi_done(SCpnt);
1796                 printk(KERN_ERR MYNAM ": task abort: "
1797                     "can't locate host! (sc=%p)\n", SCpnt);
1798                 return FAILED;
1799         }
1800
1801         ioc = hd->ioc;
1802         printk(MYIOC_s_INFO_FMT "attempting task abort! (sc=%p)\n",
1803                ioc->name, SCpnt);
1804         scsi_print_command(SCpnt);
1805
1806         vdevice = SCpnt->device->hostdata;
1807         if (!vdevice || !vdevice->vtarget) {
1808                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1809                     "task abort: device has been deleted (sc=%p)\n",
1810                     ioc->name, SCpnt));
1811                 SCpnt->result = DID_NO_CONNECT << 16;
1812                 SCpnt->scsi_done(SCpnt);
1813                 retval = 0;
1814                 goto out;
1815         }
1816
1817         /* Task aborts are not supported for hidden raid components.
1818          */
1819         if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1820                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1821                     "task abort: hidden raid component (sc=%p)\n",
1822                     ioc->name, SCpnt));
1823                 SCpnt->result = DID_RESET << 16;
1824                 retval = FAILED;
1825                 goto out;
1826         }
1827
1828         /* Find this command
1829          */
1830         if ((scpnt_idx = SCPNT_TO_LOOKUP_IDX(ioc, SCpnt)) < 0) {
1831                 /* Cmd not found in ScsiLookup.
1832                  * Do OS callback.
1833                  */
1834                 SCpnt->result = DID_RESET << 16;
1835                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "task abort: "
1836                    "Command not in the active list! (sc=%p)\n", ioc->name,
1837                    SCpnt));
1838                 retval = 0;
1839                 goto out;
1840         }
1841
1842         if (hd->resetPending) {
1843                 retval = FAILED;
1844                 goto out;
1845         }
1846
1847         if (hd->timeouts < -1)
1848                 hd->timeouts++;
1849
1850         /* Most important!  Set TaskMsgContext to SCpnt's MsgContext!
1851          * (the IO to be ABORT'd)
1852          *
1853          * NOTE: Since we do not byteswap MsgContext, we do not
1854          *       swap it here either.  It is an opaque cookie to
1855          *       the controller, so it does not matter. -DaveM
1856          */
1857         mf = MPT_INDEX_2_MFPTR(ioc, scpnt_idx);
1858         ctx2abort = mf->u.frame.hwhdr.msgctxu.MsgContext;
1859
1860         hd->abortSCpnt = SCpnt;
1861
1862         retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
1863             vdevice->vtarget->channel, vdevice->vtarget->id, vdevice->lun,
1864             ctx2abort, mptscsih_get_tm_timeout(ioc));
1865
1866         if (SCPNT_TO_LOOKUP_IDX(ioc, SCpnt) == scpnt_idx &&
1867             SCpnt->serial_number == sn)
1868                 retval = FAILED;
1869
1870  out:
1871         printk(MYIOC_s_INFO_FMT "task abort: %s (sc=%p)\n",
1872             ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1873
1874         if (retval == 0)
1875                 return SUCCESS;
1876         else
1877                 return FAILED;
1878 }
1879
1880 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1881 /**
1882  *      mptscsih_dev_reset - Perform a SCSI TARGET_RESET!  new_eh variant
1883  *      @SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1884  *
1885  *      (linux scsi_host_template.eh_dev_reset_handler routine)
1886  *
1887  *      Returns SUCCESS or FAILED.
1888  **/
1889 int
1890 mptscsih_dev_reset(struct scsi_cmnd * SCpnt)
1891 {
1892         MPT_SCSI_HOST   *hd;
1893         int              retval;
1894         VirtDevice       *vdevice;
1895         MPT_ADAPTER     *ioc;
1896
1897         /* If we can't locate our host adapter structure, return FAILED status.
1898          */
1899         if ((hd = shost_priv(SCpnt->device->host)) == NULL){
1900                 printk(KERN_ERR MYNAM ": target reset: "
1901                    "Can't locate host! (sc=%p)\n", SCpnt);
1902                 return FAILED;
1903         }
1904
1905         ioc = hd->ioc;
1906         printk(MYIOC_s_INFO_FMT "attempting target reset! (sc=%p)\n",
1907                ioc->name, SCpnt);
1908         scsi_print_command(SCpnt);
1909
1910         if (hd->resetPending) {
1911                 retval = FAILED;
1912                 goto out;
1913         }
1914
1915         vdevice = SCpnt->device->hostdata;
1916         if (!vdevice || !vdevice->vtarget) {
1917                 retval = 0;
1918                 goto out;
1919         }
1920
1921         /* Target reset to hidden raid component is not supported
1922          */
1923         if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1924                 retval = FAILED;
1925                 goto out;
1926         }
1927
1928         retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
1929             vdevice->vtarget->channel, vdevice->vtarget->id, 0, 0,
1930             mptscsih_get_tm_timeout(ioc));
1931
1932  out:
1933         printk (MYIOC_s_INFO_FMT "target reset: %s (sc=%p)\n",
1934             ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1935
1936         if (retval == 0)
1937                 return SUCCESS;
1938         else
1939                 return FAILED;
1940 }
1941
1942
1943 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1944 /**
1945  *      mptscsih_bus_reset - Perform a SCSI BUS_RESET!  new_eh variant
1946  *      @SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1947  *
1948  *      (linux scsi_host_template.eh_bus_reset_handler routine)
1949  *
1950  *      Returns SUCCESS or FAILED.
1951  **/
1952 int
1953 mptscsih_bus_reset(struct scsi_cmnd * SCpnt)
1954 {
1955         MPT_SCSI_HOST   *hd;
1956         int              retval;
1957         VirtDevice       *vdevice;
1958         MPT_ADAPTER     *ioc;
1959
1960         /* If we can't locate our host adapter structure, return FAILED status.
1961          */
1962         if ((hd = shost_priv(SCpnt->device->host)) == NULL){
1963                 printk(KERN_ERR MYNAM ": bus reset: "
1964                    "Can't locate host! (sc=%p)\n", SCpnt);
1965                 return FAILED;
1966         }
1967
1968         ioc = hd->ioc;
1969         printk(MYIOC_s_INFO_FMT "attempting bus reset! (sc=%p)\n",
1970                ioc->name, SCpnt);
1971         scsi_print_command(SCpnt);
1972
1973         if (hd->timeouts < -1)
1974                 hd->timeouts++;
1975
1976         vdevice = SCpnt->device->hostdata;
1977         retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
1978             vdevice->vtarget->channel, 0, 0, 0, mptscsih_get_tm_timeout(ioc));
1979
1980         printk(MYIOC_s_INFO_FMT "bus reset: %s (sc=%p)\n",
1981             ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1982
1983         if (retval == 0)
1984                 return SUCCESS;
1985         else
1986                 return FAILED;
1987 }
1988
1989 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1990 /**
1991  *      mptscsih_host_reset - Perform a SCSI host adapter RESET (new_eh variant)
1992  *      @SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1993  *
1994  *      (linux scsi_host_template.eh_host_reset_handler routine)
1995  *
1996  *      Returns SUCCESS or FAILED.
1997  */
1998 int
1999 mptscsih_host_reset(struct scsi_cmnd *SCpnt)
2000 {
2001         MPT_SCSI_HOST *  hd;
2002         int              retval;
2003         MPT_ADAPTER     *ioc;
2004
2005         /*  If we can't locate the host to reset, then we failed. */
2006         if ((hd = shost_priv(SCpnt->device->host)) == NULL){
2007                 printk(KERN_ERR MYNAM ": host reset: "
2008                     "Can't locate host! (sc=%p)\n", SCpnt);
2009                 return FAILED;
2010         }
2011
2012         ioc = hd->ioc;
2013         printk(MYIOC_s_INFO_FMT "attempting host reset! (sc=%p)\n",
2014             ioc->name, SCpnt);
2015
2016         /*  If our attempts to reset the host failed, then return a failed
2017          *  status.  The host will be taken off line by the SCSI mid-layer.
2018          */
2019         if (mpt_HardResetHandler(ioc, CAN_SLEEP) < 0) {
2020                 retval = FAILED;
2021         } else {
2022                 /*  Make sure TM pending is cleared and TM state is set to
2023                  *  NONE.
2024                  */
2025                 retval = 0;
2026                 hd->tmPending = 0;
2027                 hd->tmState = TM_STATE_NONE;
2028         }
2029
2030         printk(MYIOC_s_INFO_FMT "host reset: %s (sc=%p)\n",
2031             ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
2032
2033         return retval;
2034 }
2035
2036 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2037 /**
2038  *      mptscsih_tm_pending_wait - wait for pending task management request to complete
2039  *      @hd: Pointer to MPT host structure.
2040  *
2041  *      Returns {SUCCESS,FAILED}.
2042  */
2043 static int
2044 mptscsih_tm_pending_wait(MPT_SCSI_HOST * hd)
2045 {
2046         unsigned long  flags;
2047         int            loop_count = 4 * 10;  /* Wait 10 seconds */
2048         int            status = FAILED;
2049         MPT_ADAPTER     *ioc = hd->ioc;
2050
2051         do {
2052                 spin_lock_irqsave(&ioc->FreeQlock, flags);
2053                 if (hd->tmState == TM_STATE_NONE) {
2054                         hd->tmState = TM_STATE_IN_PROGRESS;
2055                         hd->tmPending = 1;
2056                         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2057                         status = SUCCESS;
2058                         break;
2059                 }
2060                 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2061                 msleep(250);
2062         } while (--loop_count);
2063
2064         return status;
2065 }
2066
2067 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2068 /**
2069  *      mptscsih_tm_wait_for_completion - wait for completion of TM task
2070  *      @hd: Pointer to MPT host structure.
2071  *      @timeout: timeout value
2072  *
2073  *      Returns {SUCCESS,FAILED}.
2074  */
2075 static int
2076 mptscsih_tm_wait_for_completion(MPT_SCSI_HOST * hd, ulong timeout )
2077 {
2078         unsigned long  flags;
2079         int            loop_count = 4 * timeout;
2080         int            status = FAILED;
2081         MPT_ADAPTER     *ioc = hd->ioc;
2082
2083         do {
2084                 spin_lock_irqsave(&ioc->FreeQlock, flags);
2085                 if(hd->tmPending == 0) {
2086                         status = SUCCESS;
2087                         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2088                         break;
2089                 }
2090                 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2091                 msleep(250);
2092         } while (--loop_count);
2093
2094         return status;
2095 }
2096
2097 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2098 static void
2099 mptscsih_taskmgmt_response_code(MPT_ADAPTER *ioc, u8 response_code)
2100 {
2101         char *desc;
2102
2103         switch (response_code) {
2104         case MPI_SCSITASKMGMT_RSP_TM_COMPLETE:
2105                 desc = "The task completed.";
2106                 break;
2107         case MPI_SCSITASKMGMT_RSP_INVALID_FRAME:
2108                 desc = "The IOC received an invalid frame status.";
2109                 break;
2110         case MPI_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2111                 desc = "The task type is not supported.";
2112                 break;
2113         case MPI_SCSITASKMGMT_RSP_TM_FAILED:
2114                 desc = "The requested task failed.";
2115                 break;
2116         case MPI_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2117                 desc = "The task completed successfully.";
2118                 break;
2119         case MPI_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2120                 desc = "The LUN request is invalid.";
2121                 break;
2122         case MPI_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2123                 desc = "The task is in the IOC queue and has not been sent to target.";
2124                 break;
2125         default:
2126                 desc = "unknown";
2127                 break;
2128         }
2129         printk(MYIOC_s_INFO_FMT "Response Code(0x%08x): F/W: %s\n",
2130                 ioc->name, response_code, desc);
2131 }
2132
2133 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2134 /**
2135  *      mptscsih_taskmgmt_complete - Registered with Fusion MPT base driver
2136  *      @ioc: Pointer to MPT_ADAPTER structure
2137  *      @mf: Pointer to SCSI task mgmt request frame
2138  *      @mr: Pointer to SCSI task mgmt reply frame
2139  *
2140  *      This routine is called from mptbase.c::mpt_interrupt() at the completion
2141  *      of any SCSI task management request.
2142  *      This routine is registered with the MPT (base) driver at driver
2143  *      load/init time via the mpt_register() API call.
2144  *
2145  *      Returns 1 indicating alloc'd request frame ptr should be freed.
2146  **/
2147 int
2148 mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
2149 {
2150         SCSITaskMgmtReply_t     *pScsiTmReply;
2151         SCSITaskMgmt_t          *pScsiTmReq;
2152         MPT_SCSI_HOST           *hd;
2153         unsigned long            flags;
2154         u16                      iocstatus;
2155         u8                       tmType;
2156         u32                      termination_count;
2157
2158         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TaskMgmt completed (mf=%p,mr=%p)\n",
2159             ioc->name, mf, mr));
2160         if (!ioc->sh) {
2161                 dtmprintk(ioc, printk(MYIOC_s_WARN_FMT
2162                     "TaskMgmt Complete: NULL Scsi Host Ptr\n", ioc->name));
2163                 return 1;
2164         }
2165
2166         if (mr == NULL) {
2167                 dtmprintk(ioc, printk(MYIOC_s_WARN_FMT
2168                     "ERROR! TaskMgmt Reply: NULL Request %p\n", ioc->name, mf));
2169                 return 1;
2170         }
2171
2172         hd = shost_priv(ioc->sh);
2173         pScsiTmReply = (SCSITaskMgmtReply_t*)mr;
2174         pScsiTmReq = (SCSITaskMgmt_t*)mf;
2175         tmType = pScsiTmReq->TaskType;
2176         iocstatus = le16_to_cpu(pScsiTmReply->IOCStatus) & MPI_IOCSTATUS_MASK;
2177         termination_count = le32_to_cpu(pScsiTmReply->TerminationCount);
2178
2179         if (ioc->facts.MsgVersion >= MPI_VERSION_01_05 &&
2180             pScsiTmReply->ResponseCode)
2181                 mptscsih_taskmgmt_response_code(ioc,
2182                     pScsiTmReply->ResponseCode);
2183         DBG_DUMP_TM_REPLY_FRAME(ioc, (u32 *)pScsiTmReply);
2184
2185 #ifdef CONFIG_FUSION_LOGGING
2186         if ((ioc->debug_level & MPT_DEBUG_REPLY) ||
2187                                 (ioc->debug_level & MPT_DEBUG_TM ))
2188                 printk("%s: ha=%d [%d:%d:0] task_type=0x%02X "
2189                         "iocstatus=0x%04X\n\tloginfo=0x%08X response_code=0x%02X "
2190                         "term_cmnds=%d\n", __FUNCTION__, ioc->id, pScsiTmReply->Bus,
2191                          pScsiTmReply->TargetID, pScsiTmReq->TaskType,
2192                         le16_to_cpu(pScsiTmReply->IOCStatus),
2193                         le32_to_cpu(pScsiTmReply->IOCLogInfo),pScsiTmReply->ResponseCode,
2194                         le32_to_cpu(pScsiTmReply->TerminationCount));
2195 #endif
2196         if (!iocstatus) {
2197                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT " TaskMgmt SUCCESS\n", ioc->name));
2198                         hd->abortSCpnt = NULL;
2199                 goto out;
2200         }
2201
2202         /* Error?  (anything non-zero?) */
2203
2204         /* clear flags and continue.
2205          */
2206         switch (tmType) {
2207
2208         case MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
2209                 if (termination_count == 1)
2210                         iocstatus = MPI_IOCSTATUS_SCSI_TASK_TERMINATED;
2211                 hd->abortSCpnt = NULL;
2212                 break;
2213
2214         case MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS:
2215
2216                 /* If an internal command is present
2217                  * or the TM failed - reload the FW.
2218                  * FC FW may respond FAILED to an ABORT
2219                  */
2220                 if (iocstatus == MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED ||
2221                     hd->cmdPtr)
2222                         if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0)
2223                                 printk(MYIOC_s_WARN_FMT " Firmware Reload FAILED!!\n", ioc->name);
2224                 break;
2225
2226         case MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
2227         default:
2228                 break;
2229         }
2230
2231  out:
2232         spin_lock_irqsave(&ioc->FreeQlock, flags);
2233         hd->tmPending = 0;
2234         hd->tmState = TM_STATE_NONE;
2235         hd->tm_iocstatus = iocstatus;
2236         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2237
2238         return 1;
2239 }
2240
2241 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2242 /*
2243  *      This is anyones guess quite frankly.
2244  */
2245 int
2246 mptscsih_bios_param(struct scsi_device * sdev, struct block_device *bdev,
2247                 sector_t capacity, int geom[])
2248 {
2249         int             heads;
2250         int             sectors;
2251         sector_t        cylinders;
2252         ulong           dummy;
2253
2254         heads = 64;
2255         sectors = 32;
2256
2257         dummy = heads * sectors;
2258         cylinders = capacity;
2259         sector_div(cylinders,dummy);
2260
2261         /*
2262          * Handle extended translation size for logical drives
2263          * > 1Gb
2264          */
2265         if ((ulong)capacity >= 0x200000) {
2266                 heads = 255;
2267                 sectors = 63;
2268                 dummy = heads * sectors;
2269                 cylinders = capacity;
2270                 sector_div(cylinders,dummy);
2271         }
2272
2273         /* return result */
2274         geom[0] = heads;
2275         geom[1] = sectors;
2276         geom[2] = cylinders;
2277
2278         return 0;
2279 }
2280
2281 /* Search IOC page 3 to determine if this is hidden physical disk
2282  *
2283  */
2284 int
2285 mptscsih_is_phys_disk(MPT_ADAPTER *ioc, u8 channel, u8 id)
2286 {
2287         struct inactive_raid_component_info *component_info;
2288         int i;
2289         int rc = 0;
2290
2291         if (!ioc->raid_data.pIocPg3)
2292                 goto out;
2293         for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
2294                 if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) &&
2295                     (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) {
2296                         rc = 1;
2297                         goto out;
2298                 }
2299         }
2300
2301         /*
2302          * Check inactive list for matching phys disks
2303          */
2304         if (list_empty(&ioc->raid_data.inactive_list))
2305                 goto out;
2306
2307         down(&ioc->raid_data.inactive_list_mutex);
2308         list_for_each_entry(component_info, &ioc->raid_data.inactive_list,
2309             list) {
2310                 if ((component_info->d.PhysDiskID == id) &&
2311                     (component_info->d.PhysDiskBus == channel))
2312                         rc = 1;
2313         }
2314         up(&ioc->raid_data.inactive_list_mutex);
2315
2316  out:
2317         return rc;
2318 }
2319 EXPORT_SYMBOL(mptscsih_is_phys_disk);
2320
2321 u8
2322 mptscsih_raid_id_to_num(MPT_ADAPTER *ioc, u8 channel, u8 id)
2323 {
2324         struct inactive_raid_component_info *component_info;
2325         int i;
2326         int rc = -ENXIO;
2327
2328         if (!ioc->raid_data.pIocPg3)
2329                 goto out;
2330         for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
2331                 if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) &&
2332                     (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) {
2333                         rc = ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum;
2334                         goto out;
2335                 }
2336         }
2337
2338         /*
2339          * Check inactive list for matching phys disks
2340          */
2341         if (list_empty(&ioc->raid_data.inactive_list))
2342                 goto out;
2343
2344         down(&ioc->raid_data.inactive_list_mutex);
2345         list_for_each_entry(component_info, &ioc->raid_data.inactive_list,
2346             list) {
2347                 if ((component_info->d.PhysDiskID == id) &&
2348                     (component_info->d.PhysDiskBus == channel))
2349                         rc = component_info->d.PhysDiskNum;
2350         }
2351         up(&ioc->raid_data.inactive_list_mutex);
2352
2353  out:
2354         return rc;
2355 }
2356 EXPORT_SYMBOL(mptscsih_raid_id_to_num);
2357
2358 /*
2359  *      OS entry point to allow for host driver to free allocated memory
2360  *      Called if no device present or device being unloaded
2361  */
2362 void
2363 mptscsih_slave_destroy(struct scsi_device *sdev)
2364 {
2365         struct Scsi_Host        *host = sdev->host;
2366         MPT_SCSI_HOST           *hd = shost_priv(host);
2367         VirtTarget              *vtarget;
2368         VirtDevice              *vdevice;
2369         struct scsi_target      *starget;
2370
2371         starget = scsi_target(sdev);
2372         vtarget = starget->hostdata;
2373         vdevice = sdev->hostdata;
2374
2375         mptscsih_search_running_cmds(hd, vdevice);
2376         vtarget->num_luns--;
2377         mptscsih_synchronize_cache(hd, vdevice);
2378         kfree(vdevice);
2379         sdev->hostdata = NULL;
2380 }
2381
2382 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2383 /*
2384  *      mptscsih_change_queue_depth - This function will set a devices queue depth
2385  *      @sdev: per scsi_device pointer
2386  *      @qdepth: requested queue depth
2387  *
2388  *      Adding support for new 'change_queue_depth' api.
2389 */
2390 int
2391 mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
2392 {
2393         MPT_SCSI_HOST           *hd = shost_priv(sdev->host);
2394         VirtTarget              *vtarget;
2395         struct scsi_target      *starget;
2396         int                     max_depth;
2397         int                     tagged;
2398         MPT_ADAPTER             *ioc = hd->ioc;
2399
2400         starget = scsi_target(sdev);
2401         vtarget = starget->hostdata;
2402
2403         if (ioc->bus_type == SPI) {
2404                 if (!(vtarget->tflags & MPT_TARGET_FLAGS_Q_YES))
2405                         max_depth = 1;
2406                 else if (sdev->type == TYPE_DISK &&
2407                          vtarget->minSyncFactor <= MPT_ULTRA160)
2408                         max_depth = MPT_SCSI_CMD_PER_DEV_HIGH;
2409                 else
2410                         max_depth = MPT_SCSI_CMD_PER_DEV_LOW;
2411         } else
2412                 max_depth = MPT_SCSI_CMD_PER_DEV_HIGH;
2413
2414         if (qdepth > max_depth)
2415                 qdepth = max_depth;
2416         if (qdepth == 1)
2417                 tagged = 0;
2418         else
2419                 tagged = MSG_SIMPLE_TAG;
2420
2421         scsi_adjust_queue_depth(sdev, tagged, qdepth);
2422         return sdev->queue_depth;
2423 }
2424
2425 /*
2426  *      OS entry point to adjust the queue_depths on a per-device basis.
2427  *      Called once per device the bus scan. Use it to force the queue_depth
2428  *      member to 1 if a device does not support Q tags.
2429  *      Return non-zero if fails.
2430  */
2431 int
2432 mptscsih_slave_configure(struct scsi_device *sdev)
2433 {
2434         struct Scsi_Host        *sh = sdev->host;
2435         VirtTarget              *vtarget;
2436         VirtDevice              *vdevice;
2437         struct scsi_target      *starget;
2438         MPT_SCSI_HOST           *hd = shost_priv(sh);
2439         MPT_ADAPTER             *ioc = hd->ioc;
2440
2441         starget = scsi_target(sdev);
2442         vtarget = starget->hostdata;
2443         vdevice = sdev->hostdata;
2444
2445         dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2446                 "device @ %p, channel=%d, id=%d, lun=%d\n",
2447                 ioc->name, sdev, sdev->channel, sdev->id, sdev->lun));
2448         if (ioc->bus_type == SPI)
2449                 dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2450                     "sdtr %d wdtr %d ppr %d inq length=%d\n",
2451                     ioc->name, sdev->sdtr, sdev->wdtr,
2452                     sdev->ppr, sdev->inquiry_len));
2453
2454         if (sdev->id > sh->max_id) {
2455                 /* error case, should never happen */
2456                 scsi_adjust_queue_depth(sdev, 0, 1);
2457                 goto slave_configure_exit;
2458         }
2459
2460         vdevice->configured_lun = 1;
2461         mptscsih_change_queue_depth(sdev, MPT_SCSI_CMD_PER_DEV_HIGH);
2462
2463         dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2464                 "Queue depth=%d, tflags=%x\n",
2465                 ioc->name, sdev->queue_depth, vtarget->tflags));
2466
2467         if (ioc->bus_type == SPI)
2468                 dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2469                     "negoFlags=%x, maxOffset=%x, SyncFactor=%x\n",
2470                     ioc->name, vtarget->negoFlags, vtarget->maxOffset,
2471                     vtarget->minSyncFactor));
2472
2473 slave_configure_exit:
2474
2475         dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2476                 "tagged %d, simple %d, ordered %d\n",
2477                 ioc->name,sdev->tagged_supported, sdev->simple_tags,
2478                 sdev->ordered_tags));
2479
2480         return 0;
2481 }
2482
2483 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2484 /*
2485  *  Private routines...
2486  */
2487
2488 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2489 /* Utility function to copy sense data from the scsi_cmnd buffer
2490  * to the FC and SCSI target structures.
2491  *
2492  */
2493 static void
2494 mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR *mf, SCSIIOReply_t *pScsiReply)
2495 {
2496         VirtDevice      *vdevice;
2497         SCSIIORequest_t *pReq;
2498         u32              sense_count = le32_to_cpu(pScsiReply->SenseCount);
2499         MPT_ADAPTER     *ioc = hd->ioc;
2500
2501         /* Get target structure
2502          */
2503         pReq = (SCSIIORequest_t *) mf;
2504         vdevice = sc->device->hostdata;
2505
2506         if (sense_count) {
2507                 u8 *sense_data;
2508                 int req_index;
2509
2510                 /* Copy the sense received into the scsi command block. */
2511                 req_index = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
2512                 sense_data = ((u8 *)ioc->sense_buf_pool + (req_index * MPT_SENSE_BUFFER_ALLOC));
2513                 memcpy(sc->sense_buffer, sense_data, SNS_LEN(sc));
2514
2515                 /* Log SMART data (asc = 0x5D, non-IM case only) if required.
2516                  */
2517                 if ((ioc->events) && (ioc->eventTypes & (1 << MPI_EVENT_SCSI_DEVICE_STATUS_CHANGE))) {
2518                         if ((sense_data[12] == 0x5D) && (vdevice->vtarget->raidVolume == 0)) {
2519                                 int idx;
2520
2521                                 idx = ioc->eventContext % MPTCTL_EVENT_LOG_SIZE;
2522                                 ioc->events[idx].event = MPI_EVENT_SCSI_DEVICE_STATUS_CHANGE;
2523                                 ioc->events[idx].eventContext = ioc->eventContext;
2524
2525                                 ioc->events[idx].data[0] = (pReq->LUN[1] << 24) |
2526                                         (MPI_EVENT_SCSI_DEV_STAT_RC_SMART_DATA << 16) |
2527                                         (sc->device->channel << 8) | sc->device->id;
2528
2529                                 ioc->events[idx].data[1] = (sense_data[13] << 8) | sense_data[12];
2530
2531                                 ioc->eventContext++;
2532                                 if (ioc->pcidev->vendor ==
2533                                     PCI_VENDOR_ID_IBM) {
2534                                         mptscsih_issue_sep_command(ioc,
2535                                             vdevice->vtarget, MPI_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
2536                                         vdevice->vtarget->tflags |=
2537                                             MPT_TARGET_FLAGS_LED_ON;
2538                                 }
2539                         }
2540                 }
2541         } else {
2542                 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Hmmm... SenseData len=0! (?)\n",
2543                                 ioc->name));
2544         }
2545 }
2546
2547 /**
2548  * mptscsih_get_scsi_lookup
2549  * @ioc: Pointer to MPT_ADAPTER structure
2550  * @i: index into the array
2551  *
2552  * retrieves scmd entry from ScsiLookup[] array list
2553  *
2554  * Returns the scsi_cmd pointer
2555  **/
2556 static struct scsi_cmnd *
2557 mptscsih_get_scsi_lookup(MPT_ADAPTER *ioc, int i)
2558 {
2559         unsigned long   flags;
2560         struct scsi_cmnd *scmd;
2561
2562         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2563         scmd = ioc->ScsiLookup[i];
2564         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2565
2566         return scmd;
2567 }
2568
2569 /**
2570  * mptscsih_getclear_scsi_lookup
2571  * @ioc: Pointer to MPT_ADAPTER structure
2572  * @i: index into the array
2573  *
2574  * retrieves and clears scmd entry from ScsiLookup[] array list
2575  *
2576  * Returns the scsi_cmd pointer
2577  **/
2578 static struct scsi_cmnd *
2579 mptscsih_getclear_scsi_lookup(MPT_ADAPTER *ioc, int i)
2580 {
2581         unsigned long   flags;
2582         struct scsi_cmnd *scmd;
2583
2584         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2585         scmd = ioc->ScsiLookup[i];
2586         ioc->ScsiLookup[i] = NULL;
2587         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2588
2589         return scmd;
2590 }
2591
2592 /**
2593  * mptscsih_set_scsi_lookup
2594  *
2595  * writes a scmd entry into the ScsiLookup[] array list
2596  *
2597  * @ioc: Pointer to MPT_ADAPTER structure
2598  * @i: index into the array
2599  * @scmd: scsi_cmnd pointer
2600  *
2601  **/
2602 static void
2603 mptscsih_set_scsi_lookup(MPT_ADAPTER *ioc, int i, struct scsi_cmnd *scmd)
2604 {
2605         unsigned long   flags;
2606
2607         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2608         ioc->ScsiLookup[i] = scmd;
2609         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2610 }
2611
2612 /**
2613  * SCPNT_TO_LOOKUP_IDX - searches for a given scmd in the ScsiLookup[] array list
2614  * @ioc: Pointer to MPT_ADAPTER structure
2615  * @sc: scsi_cmnd pointer
2616  */
2617 static int
2618 SCPNT_TO_LOOKUP_IDX(MPT_ADAPTER *ioc, struct scsi_cmnd *sc)
2619 {
2620         unsigned long   flags;
2621         int i, index=-1;
2622
2623         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2624         for (i = 0; i < ioc->req_depth; i++) {
2625                 if (ioc->ScsiLookup[i] == sc) {
2626                         index = i;
2627                         goto out;
2628                 }
2629         }
2630
2631  out:
2632         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2633         return index;
2634 }
2635
2636 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2637 int
2638 mptscsih_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
2639 {
2640         MPT_SCSI_HOST   *hd;
2641         unsigned long    flags;
2642
2643         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2644             ": IOC %s_reset routed to SCSI host driver!\n",
2645             ioc->name, reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
2646             reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
2647
2648         /* If a FW reload request arrives after base installed but
2649          * before all scsi hosts have been attached, then an alt_ioc
2650          * may have a NULL sh pointer.
2651          */
2652         if (ioc->sh == NULL || shost_priv(ioc->sh) == NULL)
2653                 return 0;
2654         else
2655                 hd = shost_priv(ioc->sh);
2656
2657         if (reset_phase == MPT_IOC_SETUP_RESET) {
2658                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Setup-Diag Reset\n", ioc->name));
2659
2660                 /* Clean Up:
2661                  * 1. Set Hard Reset Pending Flag
2662                  * All new commands go to doneQ
2663                  */
2664                 hd->resetPending = 1;
2665
2666         } else if (reset_phase == MPT_IOC_PRE_RESET) {
2667                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Pre-Diag Reset\n", ioc->name));
2668
2669                 /* 2. Flush running commands
2670                  *      Clean ScsiLookup (and associated memory)
2671                  *      AND clean mytaskQ
2672                  */
2673
2674                 /* 2b. Reply to OS all known outstanding I/O commands.
2675                  */
2676                 mptscsih_flush_running_cmds(hd);
2677
2678                 /* 2c. If there was an internal command that
2679                  * has not completed, configuration or io request,
2680                  * free these resources.
2681                  */
2682                 if (hd->cmdPtr) {
2683                         del_timer(&hd->timer);
2684                         mpt_free_msg_frame(ioc, hd->cmdPtr);
2685                 }
2686
2687                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Pre-Reset complete.\n", ioc->name));
2688
2689         } else {
2690                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Post-Diag Reset\n", ioc->name));
2691
2692                 /* Once a FW reload begins, all new OS commands are
2693                  * redirected to the doneQ w/ a reset status.
2694                  * Init all control structures.
2695                  */
2696
2697                 /* 2. Chain Buffer initialization
2698                  */
2699
2700                 /* 4. Renegotiate to all devices, if SPI
2701                  */
2702
2703                 /* 5. Enable new commands to be posted
2704                  */
2705                 spin_lock_irqsave(&ioc->FreeQlock, flags);
2706                 hd->tmPending = 0;
2707                 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2708                 hd->resetPending = 0;
2709                 hd->tmState = TM_STATE_NONE;
2710
2711                 /* 6. If there was an internal command,
2712                  * wake this process up.
2713                  */
2714                 if (hd->cmdPtr) {
2715                         /*
2716                          * Wake up the original calling thread
2717                          */
2718                         hd->pLocal = &hd->localReply;
2719                         hd->pLocal->completion = MPT_SCANDV_DID_RESET;
2720                         hd->scandv_wait_done = 1;
2721                         wake_up(&hd->scandv_waitq);
2722                         hd->cmdPtr = NULL;
2723                 }
2724
2725                 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Post-Reset complete.\n", ioc->name));
2726
2727         }
2728
2729         return 1;               /* currently means nothing really */
2730 }
2731
2732 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2733 int
2734 mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
2735 {
2736         MPT_SCSI_HOST *hd;
2737         u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
2738
2739         devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
2740                         ioc->name, event));
2741
2742         if (ioc->sh == NULL ||
2743                 ((hd = shost_priv(ioc->sh)) == NULL))
2744                 return 1;
2745
2746         switch (event) {
2747         case MPI_EVENT_UNIT_ATTENTION:                  /* 03 */
2748                 /* FIXME! */
2749                 break;
2750         case MPI_EVENT_IOC_BUS_RESET:                   /* 04 */
2751         case MPI_EVENT_EXT_BUS_RESET:                   /* 05 */
2752                 if (hd && (ioc->bus_type == SPI) && (hd->soft_resets < -1))
2753                         hd->soft_resets++;
2754                 break;
2755         case MPI_EVENT_LOGOUT:                          /* 09 */
2756                 /* FIXME! */
2757                 break;
2758
2759         case MPI_EVENT_RESCAN:                          /* 06 */
2760                 break;
2761
2762                 /*
2763                  *  CHECKME! Don't think we need to do
2764                  *  anything for these, but...
2765                  */
2766         case MPI_EVENT_LINK_STATUS_CHANGE:              /* 07 */
2767         case MPI_EVENT_LOOP_STATE_CHANGE:               /* 08 */
2768                 /*
2769                  *  CHECKME!  Falling thru...
2770                  */
2771                 break;
2772
2773         case MPI_EVENT_INTEGRATED_RAID:                 /* 0B */
2774                 break;
2775
2776         case MPI_EVENT_NONE:                            /* 00 */
2777         case MPI_EVENT_LOG_DATA:                        /* 01 */
2778         case MPI_EVENT_STATE_CHANGE:                    /* 02 */
2779         case MPI_EVENT_EVENT_CHANGE:                    /* 0A */
2780         default:
2781                 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT ": Ignoring event (=%02Xh)\n",
2782                     ioc->name, event));
2783                 break;
2784         }
2785
2786         return 1;               /* currently means nothing really */
2787 }
2788
2789 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2790 /*
2791  *  Bus Scan and Domain Validation functionality ...
2792  */
2793
2794 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2795 /*
2796  *      mptscsih_scandv_complete - Scan and DV callback routine registered
2797  *      to Fustion MPT (base) driver.
2798  *
2799  *      @ioc: Pointer to MPT_ADAPTER structure
2800  *      @mf: Pointer to original MPT request frame
2801  *      @mr: Pointer to MPT reply frame (NULL if TurboReply)
2802  *
2803  *      This routine is called from mpt.c::mpt_interrupt() at the completion
2804  *      of any SCSI IO request.
2805  *      This routine is registered with the Fusion MPT (base) driver at driver
2806  *      load/init time via the mpt_register() API call.
2807  *
2808  *      Returns 1 indicating alloc'd request frame ptr should be freed.
2809  *
2810  *      Remark: Sets a completion code and (possibly) saves sense data
2811  *      in the IOC member localReply structure.
2812  *      Used ONLY for DV and other internal commands.
2813  */
2814 int
2815 mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
2816 {
2817         MPT_SCSI_HOST   *hd;
2818         SCSIIORequest_t *pReq;
2819         int              completionCode;
2820         u16              req_idx;
2821
2822         hd = shost_priv(ioc->sh);
2823
2824         if ((mf == NULL) ||
2825             (mf >= MPT_INDEX_2_MFPTR(ioc, ioc->req_depth))) {
2826                 printk(MYIOC_s_ERR_FMT
2827                         "ScanDvComplete, %s req frame ptr! (=%p)\n",
2828                                 ioc->name, mf?"BAD":"NULL", (void *) mf);
2829                 goto wakeup;
2830         }
2831
2832         del_timer(&hd->timer);
2833         req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
2834         mptscsih_set_scsi_lookup(ioc, req_idx, NULL);
2835         pReq = (SCSIIORequest_t *) mf;
2836
2837         if (mf != hd->cmdPtr) {
2838                 printk(MYIOC_s_WARN_FMT "ScanDvComplete (mf=%p, cmdPtr=%p, idx=%d)\n",
2839                                 ioc->name, (void *)mf, (void *) hd->cmdPtr, req_idx);
2840         }
2841         hd->cmdPtr = NULL;
2842
2843         ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScanDvComplete (mf=%p,mr=%p,idx=%d)\n",
2844                         ioc->name, mf, mr, req_idx));
2845
2846         hd->pLocal = &hd->localReply;
2847         hd->pLocal->scsiStatus = 0;
2848
2849         /* If target struct exists, clear sense valid flag.
2850          */
2851         if (mr == NULL) {
2852                 completionCode = MPT_SCANDV_GOOD;
2853         } else {
2854                 SCSIIOReply_t   *pReply;
2855                 u16              status;
2856                 u8               scsi_status;
2857
2858                 pReply = (SCSIIOReply_t *) mr;
2859
2860                 status = le16_to_cpu(pReply->IOCStatus) & MPI_IOCSTATUS_MASK;
2861                 scsi_status = pReply->SCSIStatus;
2862
2863
2864                 switch(status) {
2865
2866                 case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:       /* 0x0043 */
2867                         completionCode = MPT_SCANDV_SELECTION_TIMEOUT;
2868                         break;
2869
2870                 case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:          /* 0x0046 */
2871                 case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:        /* 0x0048 */
2872                 case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:         /* 0x004B */
2873                 case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:         /* 0x004C */
2874                         completionCode = MPT_SCANDV_DID_RESET;
2875                         break;
2876
2877                 case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:          /* 0x0045 */
2878                 case MPI_IOCSTATUS_SCSI_RECOVERED_ERROR:        /* 0x0040 */
2879                 case MPI_IOCSTATUS_SUCCESS:                     /* 0x0000 */
2880                         if (pReply->Function == MPI_FUNCTION_CONFIG) {
2881                                 ConfigReply_t *pr = (ConfigReply_t *)mr;
2882                                 completionCode = MPT_SCANDV_GOOD;
2883                                 hd->pLocal->header.PageVersion = pr->Header.PageVersion;
2884                                 hd->pLocal->header.PageLength = pr->Header.PageLength;
2885                                 hd->pLocal->header.PageNumber = pr->Header.PageNumber;
2886                                 hd->pLocal->header.PageType = pr->Header.PageType;
2887
2888                         } else if (pReply->Function == MPI_FUNCTION_RAID_ACTION) {
2889                                 /* If the RAID Volume request is successful,
2890                                  * return GOOD, else indicate that
2891                                  * some type of error occurred.
2892                                  */
2893                                 MpiRaidActionReply_t    *pr = (MpiRaidActionReply_t *)mr;
2894                                 if (le16_to_cpu(pr->ActionStatus) == MPI_RAID_ACTION_ASTATUS_SUCCESS)
2895                                         completionCode = MPT_SCANDV_GOOD;
2896                                 else
2897                                         completionCode = MPT_SCANDV_SOME_ERROR;
2898                                 memcpy(hd->pLocal->sense, pr, sizeof(hd->pLocal->sense));
2899
2900                         } else if (pReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_VALID) {
2901                                 u8              *sense_data;
2902                                 int              sz;
2903
2904                                 /* save sense data in global structure
2905                                  */
2906                                 completionCode = MPT_SCANDV_SENSE;
2907                                 hd->pLocal->scsiStatus = scsi_status;
2908                                 sense_data = ((u8 *)ioc->sense_buf_pool +
2909                                         (req_idx * MPT_SENSE_BUFFER_ALLOC));
2910
2911                                 sz = min_t(int, pReq->SenseBufferLength,
2912                                                         SCSI_STD_SENSE_BYTES);
2913                                 memcpy(hd->pLocal->sense, sense_data, sz);
2914
2915                                 ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "  Check Condition, sense ptr %p\n",
2916                                     ioc->name, sense_data));
2917                         } else if (pReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_FAILED) {
2918                                 if (pReq->CDB[0] == INQUIRY)
2919                                         completionCode = MPT_SCANDV_ISSUE_SENSE;
2920                                 else
2921                                         completionCode = MPT_SCANDV_DID_RESET;
2922                         }
2923                         else if (pReply->SCSIState & MPI_SCSI_STATE_NO_SCSI_STATUS)
2924                                 completionCode = MPT_SCANDV_DID_RESET;
2925                         else if (pReply->SCSIState & MPI_SCSI_STATE_TERMINATED)
2926                                 completionCode = MPT_SCANDV_DID_RESET;
2927                         else {
2928                                 completionCode = MPT_SCANDV_GOOD;
2929                                 hd->pLocal->scsiStatus = scsi_status;
2930                         }
2931                         break;
2932
2933                 case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:         /* 0x0047 */
2934                         if (pReply->SCSIState & MPI_SCSI_STATE_TERMINATED)
2935                                 completionCode = MPT_SCANDV_DID_RESET;
2936                         else
2937                                 completionCode = MPT_SCANDV_SOME_ERROR;
2938                         break;
2939
2940                 default:
2941                         completionCode = MPT_SCANDV_SOME_ERROR;
2942                         break;
2943
2944                 }       /* switch(status) */
2945
2946         } /* end of address reply case */
2947
2948         hd->pLocal->completion = completionCode;
2949
2950         /* MF and RF are freed in mpt_interrupt
2951          */
2952 wakeup:
2953         /* Free Chain buffers (will never chain) in scan or dv */
2954         //mptscsih_freeChainBuffers(ioc, req_idx);
2955
2956         /*
2957          * Wake up the original calling thread
2958          */
2959         hd->scandv_wait_done = 1;
2960         wake_up(&hd->scandv_waitq);
2961
2962         return 1;
2963 }
2964
2965 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2966 /*      mptscsih_timer_expired - Call back for timer process.
2967  *      Used only for dv functionality.
2968  *      @data: Pointer to MPT_SCSI_HOST recast as an unsigned long
2969  *
2970  */
2971 void
2972 mptscsih_timer_expired(unsigned long data)
2973 {
2974         MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *) data;
2975         MPT_ADAPTER     *ioc = hd->ioc;
2976
2977         ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Timer Expired! Cmd %p\n", ioc->name, hd->cmdPtr));
2978
2979         if (hd->cmdPtr) {
2980                 MPIHeader_t *cmd = (MPIHeader_t *)hd->cmdPtr;
2981
2982                 if (cmd->Function == MPI_FUNCTION_SCSI_IO_REQUEST) {
2983                         /* Desire to issue a task management request here.
2984                          * TM requests MUST be single threaded.
2985                          * If old eh code and no TM current, issue request.
2986                          * If new eh code, do nothing. Wait for OS cmd timeout
2987                          *      for bus reset.
2988                          */
2989                 } else {
2990                         /* Perform a FW reload */
2991                         if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0) {
2992                                 printk(MYIOC_s_WARN_FMT "Firmware Reload FAILED!\n", ioc->name);
2993                         }
2994                 }
2995         } else {
2996                 /* This should NEVER happen */
2997                 printk(MYIOC_s_WARN_FMT "Null cmdPtr!!!!\n", ioc->name);
2998         }
2999
3000         /* No more processing.
3001          * TM call will generate an interrupt for SCSI TM Management.
3002          * The FW will reply to all outstanding commands, callback will finish cleanup.
3003          * Hard reset clean-up will free all resources.
3004          */
3005         ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Timer Expired Complete!\n", ioc->name));
3006
3007         return;
3008 }
3009
3010
3011 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
3012 /**
3013  *      mptscsih_do_cmd - Do internal command.
3014  *      @hd: MPT_SCSI_HOST pointer
3015  *      @io: INTERNAL_CMD pointer.
3016  *
3017  *      Issue the specified internally generated command and do command
3018  *      specific cleanup. For bus scan / DV only.
3019  *      NOTES: If command is Inquiry and status is good,
3020  *      initialize a target structure, save the data
3021  *
3022  *      Remark: Single threaded access only.
3023  *
3024  *      Return:
3025  *              < 0 if an illegal command or no resources
3026  *
3027  *                 0 if good
3028  *
3029  *               > 0 if command complete but some type of completion error.
3030  */
3031 static int
3032 mptscsih_do_cmd(MPT_SCSI_HOST *hd, INTERNAL_CMD *io)
3033 {
3034         MPT_FRAME_HDR   *mf;
3035         SCSIIORequest_t *pScsiReq;
3036         SCSIIORequest_t  ReqCopy;
3037         int              my_idx, ii, dir;
3038         int              rc, cmdTimeout;
3039         int             in_isr;
3040         char             cmdLen;
3041         char             CDB[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
3042         char             cmd = io->cmd;
3043         MPT_ADAPTER     *ioc = hd->ioc;
3044
3045         in_isr = in_interrupt();
3046         if (in_isr) {
3047                 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Internal SCSI IO request not allowed in ISR context!\n",
3048                                         ioc->name));
3049                 return -EPERM;
3050         }
3051
3052
3053         /* Set command specific information
3054          */
3055         switch (cmd) {
3056         case INQUIRY:
3057                 cmdLen = 6;
3058                 dir = MPI_SCSIIO_CONTROL_READ;
3059                 CDB[0] = cmd;
3060                 CDB[4] = io->size;
3061                 cmdTimeout = 10;
3062                 break;
3063
3064         case TEST_UNIT_READY:
3065                 cmdLen = 6;
3066                 dir = MPI_SCSIIO_CONTROL_READ;
3067                 cmdTimeout = 10;
3068                 break;
3069
3070         case START_STOP:
3071                 cmdLen = 6;
3072                 dir = MPI_SCSIIO_CONTROL_READ;
3073                 CDB[0] = cmd;
3074                 CDB[4] = 1;     /*Spin up the disk */
3075                 cmdTimeout = 15;
3076                 break;
3077
3078         case REQUEST_SENSE:
3079                 cmdLen = 6;
3080                 CDB[0] = cmd;
3081                 CDB[4] = io->size;
3082                 dir = MPI_SCSIIO_CONTROL_READ;
3083                 cmdTimeout = 10;
3084                 break;
3085
3086         case READ_BUFFER:
3087                 cmdLen = 10;
3088                 dir = MPI_SCSIIO_CONTROL_READ;
3089                 CDB[0] = cmd;
3090                 if (io->flags & MPT_ICFLAG_ECHO) {
3091                         CDB[1] = 0x0A;
3092                 } else {
3093                         CDB[1] = 0x02;
3094                 }
3095
3096                 if (io->flags & MPT_ICFLAG_BUF_CAP) {
3097                         CDB[1] |= 0x01;
3098                 }
3099                 CDB[6] = (io->size >> 16) & 0xFF;
3100                 CDB[7] = (io->size >>  8) & 0xFF;
3101                 CDB[8] = io->size & 0xFF;
3102                 cmdTimeout = 10;
3103                 break;
3104
3105         case WRITE_BUFFER:
3106                 cmdLen = 10;
3107                 dir = MPI_SCSIIO_CONTROL_WRITE;
3108                 CDB[0] = cmd;
3109                 if (io->flags & MPT_ICFLAG_ECHO) {
3110                         CDB[1] = 0x0A;
3111                 } else {
3112                         CDB[1] = 0x02;
3113                 }
3114                 CDB[6] = (io->size >> 16) & 0xFF;
3115                 CDB[7] = (io->size >>  8) & 0xFF;
3116                 CDB[8] = io->size & 0xFF;
3117                 cmdTimeout = 10;
3118                 break;
3119
3120         case RESERVE:
3121                 cmdLen = 6;
3122                 dir = MPI_SCSIIO_CONTROL_READ;
3123                 CDB[0] = cmd;
3124                 cmdTimeout = 10;
3125                 break;
3126
3127         case RELEASE:
3128                 cmdLen = 6;
3129                 dir = MPI_SCSIIO_CONTROL_READ;
3130                 CDB[0] = cmd;
3131                 cmdTimeout = 10;
3132                 break;
3133
3134         case SYNCHRONIZE_CACHE:
3135                 cmdLen = 10;
3136                 dir = MPI_SCSIIO_CONTROL_READ;
3137                 CDB[0] = cmd;
3138 //              CDB[1] = 0x02;  /* set immediate bit */
3139                 cmdTimeout = 10;
3140                 break;
3141
3142         default:
3143                 /* Error Case */
3144                 return -EFAULT;
3145         }
3146
3147         /* Get and Populate a free Frame
3148          */
3149         if ((mf = mpt_get_msg_frame(ioc->InternalCtx, ioc)) == NULL) {
3150                 dfailprintk(ioc, printk(MYIOC_s_WARN_FMT "No msg frames!\n",
3151                     ioc->name));
3152                 return -EBUSY;
3153         }
3154
3155         pScsiReq = (SCSIIORequest_t *) mf;
3156
3157         /* Get the request index */
3158         my_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
3159         ADD_INDEX_LOG(my_idx); /* for debug */
3160
3161         if (io->flags & MPT_ICFLAG_PHYS_DISK) {
3162                 pScsiReq->TargetID = io->physDiskNum;
3163                 pScsiReq->Bus = 0;
3164                 pScsiReq->ChainOffset = 0;
3165                 pScsiReq->Function = MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
3166         } else {
3167                 pScsiReq->TargetID = io->id;
3168                 pScsiReq->Bus = io->channel;
3169                 pScsiReq->ChainOffset = 0;
3170                 pScsiReq->Function = MPI_FUNCTION_SCSI_IO_REQUEST;
3171         }
3172
3173         pScsiReq->CDBLength = cmdLen;
3174         pScsiReq->SenseBufferLength = MPT_SENSE_BUFFER_SIZE;
3175
3176         pScsiReq->Reserved = 0;
3177
3178         pScsiReq->MsgFlags = mpt_msg_flags();
3179         /* MsgContext set in mpt_get_msg_fram call  */
3180
3181         int_to_scsilun(io->lun, (struct scsi_lun *)pScsiReq->LUN);
3182
3183         if (io->flags & MPT_ICFLAG_TAGGED_CMD)
3184                 pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_SIMPLEQ);
3185         else
3186                 pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_UNTAGGED);
3187
3188         if (cmd == REQUEST_SENSE) {
3189                 pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_UNTAGGED);
3190                 ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Untagged! 0x%2x\n",
3191                         ioc->name, cmd));
3192         }
3193
3194         for (ii=0; ii < 16; ii++)
3195                 pScsiReq->CDB[ii] = CDB[ii];
3196
3197         pScsiReq->DataLength = cpu_to_le32(io->size);
3198         pScsiReq->SenseBufferLowAddr = cpu_to_le32(ioc->sense_buf_low_dma
3199                                            + (my_idx * MPT_SENSE_BUFFER_ALLOC));
3200
3201         ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Sending Command 0x%x for (%d:%d:%d)\n",
3202                         ioc->name, cmd, io->channel, io->id, io->lun));
3203
3204         if (dir == MPI_SCSIIO_CONTROL_READ) {
3205                 mpt_add_sge((char *) &pScsiReq->SGL,
3206                         MPT_SGE_FLAGS_SSIMPLE_READ | io->size,
3207                         io->data_dma);
3208         } else {
3209                 mpt_add_sge((char *) &pScsiReq->SGL,
3210                         MPT_SGE_FLAGS_SSIMPLE_WRITE | io->size,
3211                         io->data_dma);
3212         }
3213
3214         /* The ISR will free the request frame, but we need
3215          * the information to initialize the target. Duplicate.
3216          */
3217         memcpy(&ReqCopy, pScsiReq, sizeof(SCSIIORequest_t));
3218
3219         /* Issue this command after:
3220          *      finish init
3221          *      add timer
3222          * Wait until the reply has been received
3223          *  ScsiScanDvCtx callback function will
3224          *      set hd->pLocal;
3225          *      set scandv_wait_done and call wake_up
3226          */
3227         hd->pLocal = NULL;
3228         hd->timer.expires = jiffies + HZ*cmdTimeout;
3229         hd->scandv_wait_done = 0;
3230
3231         /* Save cmd pointer, for resource free if timeout or
3232          * FW reload occurs
3233          */
3234         hd->cmdPtr = mf;
3235
3236         add_timer(&hd->timer);
3237         mpt_put_msg_frame(ioc->InternalCtx, ioc, mf);
3238         wait_event(hd->scandv_waitq, hd->scandv_wait_done);
3239
3240         if (hd->pLocal) {
3241                 rc = hd->pLocal->completion;
3242                 hd->pLocal->skip = 0;
3243
3244                 /* Always set fatal error codes in some cases.
3245                  */
3246                 if (rc == MPT_SCANDV_SELECTION_TIMEOUT)
3247                         rc = -ENXIO;
3248                 else if (rc == MPT_SCANDV_SOME_ERROR)
3249                         rc =  -rc;
3250         } else {
3251                 rc = -EFAULT;
3252                 /* This should never happen. */
3253                 ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "_do_cmd: Null pLocal!!!\n",
3254                                 ioc->name));
3255         }
3256
3257         return rc;
3258 }
3259
3260 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
3261 /**
3262  *      mptscsih_synchronize_cache - Send SYNCHRONIZE_CACHE to all disks.
3263  *      @hd: Pointer to a SCSI HOST structure
3264  *      @vdevice: virtual target device
3265  *
3266  *      Uses the ISR, but with special processing.
3267  *      MUST be single-threaded.
3268  *
3269  */
3270 static void
3271 mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
3272 {
3273         INTERNAL_CMD             iocmd;
3274
3275         /* Ignore hidden raid components, this is handled when the command
3276          * is sent to the volume
3277          */
3278         if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT)
3279                 return;
3280
3281         if (vdevice->vtarget->type != TYPE_DISK || vdevice->vtarget->deleted ||
3282             !vdevice->configured_lun)
3283                 return;
3284
3285         /* Following parameters will not change
3286          * in this routine.
3287          */
3288         iocmd.cmd = SYNCHRONIZE_CACHE;
3289         iocmd.flags = 0;
3290         iocmd.physDiskNum = -1;
3291         iocmd.data = NULL;
3292         iocmd.data_dma = -1;
3293         iocmd.size = 0;
3294         iocmd.rsvd = iocmd.rsvd2 = 0;
3295         iocmd.channel = vdevice->vtarget->channel;
3296         iocmd.id = vdevice->vtarget->id;
3297         iocmd.lun = vdevice->lun;
3298
3299         mptscsih_do_cmd(hd, &iocmd);
3300 }
3301
3302 static ssize_t
3303 mptscsih_version_fw_show(struct class_device *cdev, char *buf)
3304 {
3305         struct Scsi_Host *host = class_to_shost(cdev);
3306         MPT_SCSI_HOST   *hd = shost_priv(host);
3307         MPT_ADAPTER *ioc = hd->ioc;
3308
3309         return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
3310             (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
3311             (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
3312             (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
3313             ioc->facts.FWVersion.Word & 0x000000FF);
3314 }
3315 static CLASS_DEVICE_ATTR(version_fw, S_IRUGO, mptscsih_version_fw_show, NULL);
3316
3317 static ssize_t
3318 mptscsih_version_bios_show(struct class_device *cdev, char *buf)
3319 {
3320         struct Scsi_Host *host = class_to_shost(cdev);
3321         MPT_SCSI_HOST   *hd = shost_priv(host);
3322         MPT_ADAPTER *ioc = hd->ioc;
3323
3324         return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
3325             (ioc->biosVersion & 0xFF000000) >> 24,
3326             (ioc->biosVersion & 0x00FF0000) >> 16,
3327             (ioc->biosVersion & 0x0000FF00) >> 8,
3328             ioc->biosVersion & 0x000000FF);
3329 }
3330 static CLASS_DEVICE_ATTR(version_bios, S_IRUGO, mptscsih_version_bios_show, NULL);
3331
3332 static ssize_t
3333 mptscsih_version_mpi_show(struct class_device *cdev, char *buf)
3334 {
3335         struct Scsi_Host *host = class_to_shost(cdev);
3336         MPT_SCSI_HOST   *hd = shost_priv(host);
3337         MPT_ADAPTER *ioc = hd->ioc;
3338
3339         return snprintf(buf, PAGE_SIZE, "%03x\n", ioc->facts.MsgVersion);
3340 }
3341 static CLASS_DEVICE_ATTR(version_mpi, S_IRUGO, mptscsih_version_mpi_show, NULL);
3342
3343 static ssize_t
3344 mptscsih_version_product_show(struct class_device *cdev, char *buf)
3345 {
3346         struct Scsi_Host *host = class_to_shost(cdev);
3347         MPT_SCSI_HOST   *hd = shost_priv(host);
3348         MPT_ADAPTER *ioc = hd->ioc;
3349
3350         return snprintf(buf, PAGE_SIZE, "%s\n", ioc->prod_name);
3351 }
3352 static CLASS_DEVICE_ATTR(version_product, S_IRUGO,
3353     mptscsih_version_product_show, NULL);
3354
3355 static ssize_t
3356 mptscsih_version_nvdata_persistent_show(struct class_device *cdev, char *buf)
3357 {
3358         struct Scsi_Host *host = class_to_shost(cdev);
3359         MPT_SCSI_HOST   *hd = shost_priv(host);
3360         MPT_ADAPTER *ioc = hd->ioc;
3361
3362         return snprintf(buf, PAGE_SIZE, "%02xh\n",
3363             ioc->nvdata_version_persistent);
3364 }
3365 static CLASS_DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
3366     mptscsih_version_nvdata_persistent_show, NULL);
3367
3368 static ssize_t
3369 mptscsih_version_nvdata_default_show(struct class_device *cdev, char *buf)
3370 {
3371         struct Scsi_Host *host = class_to_shost(cdev);
3372         MPT_SCSI_HOST   *hd = shost_priv(host);
3373         MPT_ADAPTER *ioc = hd->ioc;
3374
3375         return snprintf(buf, PAGE_SIZE, "%02xh\n",ioc->nvdata_version_default);
3376 }
3377 static CLASS_DEVICE_ATTR(version_nvdata_default, S_IRUGO,
3378     mptscsih_version_nvdata_default_show, NULL);
3379
3380 static ssize_t
3381 mptscsih_board_name_show(struct class_device *cdev, char *buf)
3382 {
3383         struct Scsi_Host *host = class_to_shost(cdev);
3384         MPT_SCSI_HOST   *hd = shost_priv(host);
3385         MPT_ADAPTER *ioc = hd->ioc;
3386
3387         return snprintf(buf, PAGE_SIZE, "%s\n", ioc->board_name);
3388 }
3389 static CLASS_DEVICE_ATTR(board_name, S_IRUGO, mptscsih_board_name_show, NULL);
3390
3391 static ssize_t
3392 mptscsih_board_assembly_show(struct class_device *cdev, char *buf)
3393 {
3394         struct Scsi_Host *host = class_to_shost(cdev);
3395         MPT_SCSI_HOST   *hd = shost_priv(host);
3396         MPT_ADAPTER *ioc = hd->ioc;
3397
3398         return snprintf(buf, PAGE_SIZE, "%s\n", ioc->board_assembly);
3399 }
3400 static CLASS_DEVICE_ATTR(board_assembly, S_IRUGO,
3401     mptscsih_board_assembly_show, NULL);
3402
3403 static ssize_t
3404 mptscsih_board_tracer_show(struct class_device *cdev, char *buf)
3405 {
3406         struct Scsi_Host *host = class_to_shost(cdev);
3407         MPT_SCSI_HOST   *hd = shost_priv(host);
3408         MPT_ADAPTER *ioc = hd->ioc;
3409
3410         return snprintf(buf, PAGE_SIZE, "%s\n", ioc->board_tracer);
3411 }
3412 static CLASS_DEVICE_ATTR(board_tracer, S_IRUGO,
3413     mptscsih_board_tracer_show, NULL);
3414
3415 static ssize_t
3416 mptscsih_io_delay_show(struct class_device *cdev, char *buf)
3417 {
3418         struct Scsi_Host *host = class_to_shost(cdev);
3419         MPT_SCSI_HOST   *hd = shost_priv(host);
3420         MPT_ADAPTER *ioc = hd->ioc;
3421
3422         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
3423 }
3424 static CLASS_DEVICE_ATTR(io_delay, S_IRUGO,
3425     mptscsih_io_delay_show, NULL);
3426
3427 static ssize_t
3428 mptscsih_device_delay_show(struct class_device *cdev, char *buf)
3429 {
3430         struct Scsi_Host *host = class_to_shost(cdev);
3431         MPT_SCSI_HOST   *hd = shost_priv(host);
3432         MPT_ADAPTER *ioc = hd->ioc;
3433
3434         return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
3435 }
3436 static CLASS_DEVICE_ATTR(device_delay, S_IRUGO,
3437     mptscsih_device_delay_show, NULL);
3438
3439 static ssize_t
3440 mptscsih_debug_level_show(struct class_device *cdev, char *buf)
3441 {
3442         struct Scsi_Host *host = class_to_shost(cdev);
3443         MPT_SCSI_HOST   *hd = shost_priv(host);
3444         MPT_ADAPTER *ioc = hd->ioc;
3445
3446         return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->debug_level);
3447 }
3448 static ssize_t
3449 mptscsih_debug_level_store(struct class_device *cdev, const char *buf,
3450                                                                 size_t count)
3451 {
3452         struct Scsi_Host *host = class_to_shost(cdev);
3453         MPT_SCSI_HOST   *hd = shost_priv(host);
3454         MPT_ADAPTER *ioc = hd->ioc;
3455         int val = 0;
3456
3457         if (sscanf(buf, "%x", &val) != 1)
3458                 return -EINVAL;
3459
3460         ioc->debug_level = val;
3461         printk(MYIOC_s_INFO_FMT "debug_level=%08xh\n",
3462                                 ioc->name, ioc->debug_level);
3463         return strlen(buf);
3464 }
3465 static CLASS_DEVICE_ATTR(debug_level, S_IRUGO | S_IWUSR,
3466     mptscsih_debug_level_show, mptscsih_debug_level_store);
3467
3468 struct class_device_attribute *mptscsih_host_attrs[] = {
3469         &class_device_attr_version_fw,
3470         &class_device_attr_version_bios,
3471         &class_device_attr_version_mpi,
3472         &class_device_attr_version_product,
3473         &class_device_attr_version_nvdata_persistent,
3474         &class_device_attr_version_nvdata_default,
3475         &class_device_attr_board_name,
3476         &class_device_attr_board_assembly,
3477         &class_device_attr_board_tracer,
3478         &class_device_attr_io_delay,
3479         &class_device_attr_device_delay,
3480         &class_device_attr_debug_level,
3481         NULL,
3482 };
3483 EXPORT_SYMBOL(mptscsih_host_attrs);
3484
3485 EXPORT_SYMBOL(mptscsih_remove);
3486 EXPORT_SYMBOL(mptscsih_shutdown);
3487 #ifdef CONFIG_PM
3488 EXPORT_SYMBOL(mptscsih_suspend);
3489 EXPORT_SYMBOL(mptscsih_resume);
3490 #endif
3491 EXPORT_SYMBOL(mptscsih_proc_info);
3492 EXPORT_SYMBOL(mptscsih_info);
3493 EXPORT_SYMBOL(mptscsih_qcmd);
3494 EXPORT_SYMBOL(mptscsih_slave_destroy);
3495 EXPORT_SYMBOL(mptscsih_slave_configure);
3496 EXPORT_SYMBOL(mptscsih_abort);
3497 EXPORT_SYMBOL(mptscsih_dev_reset);
3498 EXPORT_SYMBOL(mptscsih_bus_reset);
3499 EXPORT_SYMBOL(mptscsih_host_reset);
3500 EXPORT_SYMBOL(mptscsih_bios_param);
3501 EXPORT_SYMBOL(mptscsih_io_done);
3502 EXPORT_SYMBOL(mptscsih_taskmgmt_complete);
3503 EXPORT_SYMBOL(mptscsih_scandv_complete);
3504 EXPORT_SYMBOL(mptscsih_event_process);
3505 EXPORT_SYMBOL(mptscsih_ioc_reset);
3506 EXPORT_SYMBOL(mptscsih_change_queue_depth);
3507 EXPORT_SYMBOL(mptscsih_timer_expired);
3508 EXPORT_SYMBOL(mptscsih_TMHandler);
3509
3510 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/