git.oblomov.eu Git - linux-2.6/blob - drivers/message/fusion/mptscsih.c

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