err.no Git - linux-2.6/blob - drivers/message/fusion/mptscsih.c

   1 /*
   2  *  linux/drivers/message/fusion/mptscsih.c
   3  *      For use with LSI Logic PCI chip/adapter(s)
   4  *      running LSI Logic Fusion MPT (Message Passing Technology) firmware.
   5  *
   6  *  Copyright (c) 1999-2005 LSI Logic Corporation
   7  *  (mailto:mpt_linux_developer@lsil.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_compat.h"       /* linux-2.6 tweaks */
  48 #include <linux/module.h>
  49 #include <linux/kernel.h>
  50 #include <linux/init.h>
  51 #include <linux/errno.h>
  52 #include <linux/kdev_t.h>
  53 #include <linux/blkdev.h>
  54 #include <linux/delay.h>        /* for mdelay */
  55 #include <linux/interrupt.h>    /* needed for in_interrupt() proto */
  56 #include <linux/reboot.h>       /* notifier code */
  57 #include <linux/sched.h>
  58 #include <linux/workqueue.h>
  59
  60 #include <scsi/scsi.h>
  61 #include <scsi/scsi_cmnd.h>
  62 #include <scsi/scsi_device.h>
  63 #include <scsi/scsi_host.h>
  64 #include <scsi/scsi_tcq.h>
  65 #include <scsi/scsi_dbg.h>
  66
  67 #include "mptbase.h"
  68 #include "mptscsih.h"
  69 #include "lsi/mpi_log_sas.h"
  70
  71 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
  72 #define my_NAME         "Fusion MPT SCSI Host driver"
  73 #define my_VERSION      MPT_LINUX_VERSION_COMMON
  74 #define MYNAM           "mptscsih"
  75
  76 MODULE_AUTHOR(MODULEAUTHOR);
  77 MODULE_DESCRIPTION(my_NAME);
  78 MODULE_LICENSE("GPL");
  79
  80 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
  81
  82 typedef struct _BIG_SENSE_BUF {
  83         u8              data[MPT_SENSE_BUFFER_ALLOC];
  84 } BIG_SENSE_BUF;
  85
  86 #define MPT_SCANDV_GOOD                 (0x00000000) /* must be 0 */
  87 #define MPT_SCANDV_DID_RESET            (0x00000001)
  88 #define MPT_SCANDV_SENSE                (0x00000002)
  89 #define MPT_SCANDV_SOME_ERROR           (0x00000004)
  90 #define MPT_SCANDV_SELECTION_TIMEOUT    (0x00000008)
  91 #define MPT_SCANDV_ISSUE_SENSE          (0x00000010)
  92 #define MPT_SCANDV_FALLBACK             (0x00000020)
  93
  94 #define MPT_SCANDV_MAX_RETRIES          (10)
  95
  96 #define MPT_ICFLAG_BUF_CAP      0x01    /* ReadBuffer Read Capacity format */
  97 #define MPT_ICFLAG_ECHO         0x02    /* ReadBuffer Echo buffer format */
  98 #define MPT_ICFLAG_EBOS         0x04    /* ReadBuffer Echo buffer has EBOS */
  99 #define MPT_ICFLAG_PHYS_DISK    0x08    /* Any SCSI IO but do Phys Disk Format */
 100 #define MPT_ICFLAG_TAGGED_CMD   0x10    /* Do tagged IO */
 101 #define MPT_ICFLAG_DID_RESET    0x20    /* Bus Reset occurred with this command */
 102 #define MPT_ICFLAG_RESERVED     0x40    /* Reserved has been issued */
 103
 104 typedef struct _internal_cmd {
 105         char            *data;          /* data pointer */
 106         dma_addr_t      data_dma;       /* data dma address */
 107         int             size;           /* transfer size */
 108         u8              cmd;            /* SCSI Op Code */
 109         u8              bus;            /* bus number */
 110         u8              id;             /* SCSI ID (virtual) */
 111         u8              lun;
 112         u8              flags;          /* Bit Field - See above */
 113         u8              physDiskNum;    /* Phys disk number, -1 else */
 114         u8              rsvd2;
 115         u8              rsvd;
 116 } INTERNAL_CMD;
 117
 118 /*
 119  *  Other private/forward protos...
 120  */
 121 int             mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
 122 static void     mptscsih_report_queue_full(struct scsi_cmnd *sc, SCSIIOReply_t *pScsiReply, SCSIIORequest_t *pScsiReq);
 123 int             mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
 124
 125 static int      mptscsih_AddSGE(MPT_ADAPTER *ioc, struct scsi_cmnd *SCpnt,
 126                                  SCSIIORequest_t *pReq, int req_idx);
 127 static void     mptscsih_freeChainBuffers(MPT_ADAPTER *ioc, int req_idx);
 128 static void     mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR *mf, SCSIIOReply_t *pScsiReply);
 129 static int      mptscsih_tm_pending_wait(MPT_SCSI_HOST * hd);
 130 static int      mptscsih_tm_wait_for_completion(MPT_SCSI_HOST * hd, ulong timeout );
 131 static u32      SCPNT_TO_LOOKUP_IDX(struct scsi_cmnd *sc);
 132
 133 static int      mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 target, u8 lun, int ctx2abort, ulong timeout);
 134
 135 int             mptscsih_ioc_reset(MPT_ADAPTER *ioc, int post_reset);
 136 int             mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply);
 137
 138 static void     mptscsih_initTarget(MPT_SCSI_HOST *hd, VirtTarget *vtarget, struct scsi_device *sdev);
 139 static void     mptscsih_setTargetNegoParms(MPT_SCSI_HOST *hd, VirtTarget *vtarget, struct scsi_device *sdev);
 140 static int      mptscsih_writeIOCPage4(MPT_SCSI_HOST *hd, int target_id, int bus);
 141 int             mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
 142 static int      mptscsih_do_cmd(MPT_SCSI_HOST *hd, INTERNAL_CMD *iocmd);
 143 static void     mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice *vdevice);
 144
 145 void            mptscsih_remove(struct pci_dev *);
 146 void            mptscsih_shutdown(struct pci_dev *);
 147 #ifdef CONFIG_PM
 148 int             mptscsih_suspend(struct pci_dev *pdev, pm_message_t state);
 149 int             mptscsih_resume(struct pci_dev *pdev);
 150 #endif
 151
 152 #define SNS_LEN(scp)    sizeof((scp)->sense_buffer)
 153
 154 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 155 /**
 156  *      mptscsih_add_sge - Place a simple SGE at address pAddr.
 157  *      @pAddr: virtual address for SGE
 158  *      @flagslength: SGE flags and data transfer length
 159  *      @dma_addr: Physical address
 160  *
 161  *      This routine places a MPT request frame back on the MPT adapter's
 162  *      FreeQ.
 163  */
 164 static inline void
 165 mptscsih_add_sge(char *pAddr, u32 flagslength, dma_addr_t dma_addr)
 166 {
 167         if (sizeof(dma_addr_t) == sizeof(u64)) {
 168                 SGESimple64_t *pSge = (SGESimple64_t *) pAddr;
 169                 u32 tmp = dma_addr & 0xFFFFFFFF;
 170
 171                 pSge->FlagsLength = cpu_to_le32(flagslength);
 172                 pSge->Address.Low = cpu_to_le32(tmp);
 173                 tmp = (u32) ((u64)dma_addr >> 32);
 174                 pSge->Address.High = cpu_to_le32(tmp);
 175
 176         } else {
 177                 SGESimple32_t *pSge = (SGESimple32_t *) pAddr;
 178                 pSge->FlagsLength = cpu_to_le32(flagslength);
 179                 pSge->Address = cpu_to_le32(dma_addr);
 180         }
 181 } /* mptscsih_add_sge() */
 182
 183 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 184 /**
 185  *      mptscsih_add_chain - Place a chain SGE at address pAddr.
 186  *      @pAddr: virtual address for SGE
 187  *      @next: nextChainOffset value (u32's)
 188  *      @length: length of next SGL segment
 189  *      @dma_addr: Physical address
 190  *
 191  *      This routine places a MPT request frame back on the MPT adapter's
 192  *      FreeQ.
 193  */
 194 static inline void
 195 mptscsih_add_chain(char *pAddr, u8 next, u16 length, dma_addr_t dma_addr)
 196 {
 197         if (sizeof(dma_addr_t) == sizeof(u64)) {
 198                 SGEChain64_t *pChain = (SGEChain64_t *) pAddr;
 199                 u32 tmp = dma_addr & 0xFFFFFFFF;
 200
 201                 pChain->Length = cpu_to_le16(length);
 202                 pChain->Flags = MPI_SGE_FLAGS_CHAIN_ELEMENT | mpt_addr_size();
 203
 204                 pChain->NextChainOffset = next;
 205
 206                 pChain->Address.Low = cpu_to_le32(tmp);
 207                 tmp = (u32) ((u64)dma_addr >> 32);
 208                 pChain->Address.High = cpu_to_le32(tmp);
 209         } else {
 210                 SGEChain32_t *pChain = (SGEChain32_t *) pAddr;
 211                 pChain->Length = cpu_to_le16(length);
 212                 pChain->Flags = MPI_SGE_FLAGS_CHAIN_ELEMENT | mpt_addr_size();
 213                 pChain->NextChainOffset = next;
 214                 pChain->Address = cpu_to_le32(dma_addr);
 215         }
 216 } /* mptscsih_add_chain() */
 217
 218 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 219 /*
 220  *      mptscsih_getFreeChainBuffer - Function to get a free chain
 221  *      from the MPT_SCSI_HOST FreeChainQ.
 222  *      @ioc: Pointer to MPT_ADAPTER structure
 223  *      @req_idx: Index of the SCSI IO request frame. (output)
 224  *
 225  *      return SUCCESS or FAILED
 226  */
 227 static inline int
 228 mptscsih_getFreeChainBuffer(MPT_ADAPTER *ioc, int *retIndex)
 229 {
 230         MPT_FRAME_HDR *chainBuf;
 231         unsigned long flags;
 232         int rc;
 233         int chain_idx;
 234
 235         dsgprintk((MYIOC_s_INFO_FMT "getFreeChainBuffer called\n",
 236                         ioc->name));
 237         spin_lock_irqsave(&ioc->FreeQlock, flags);
 238         if (!list_empty(&ioc->FreeChainQ)) {
 239                 int offset;
 240
 241                 chainBuf = list_entry(ioc->FreeChainQ.next, MPT_FRAME_HDR,
 242                                 u.frame.linkage.list);
 243                 list_del(&chainBuf->u.frame.linkage.list);
 244                 offset = (u8 *)chainBuf - (u8 *)ioc->ChainBuffer;
 245                 chain_idx = offset / ioc->req_sz;
 246                 rc = SUCCESS;
 247                 dsgprintk((MYIOC_s_ERR_FMT "getFreeChainBuffer chainBuf=%p ChainBuffer=%p offset=%d chain_idx=%d\n",
 248                         ioc->name, chainBuf, ioc->ChainBuffer, offset, chain_idx));
 249         } else {
 250                 rc = FAILED;
 251                 chain_idx = MPT_HOST_NO_CHAIN;
 252                 dfailprintk((MYIOC_s_INFO_FMT "getFreeChainBuffer failed\n",
 253                         ioc->name));
 254         }
 255         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
 256
 257         *retIndex = chain_idx;
 258         return rc;
 259 } /* mptscsih_getFreeChainBuffer() */
 260
 261 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 262 /*
 263  *      mptscsih_AddSGE - Add a SGE (plus chain buffers) to the
 264  *      SCSIIORequest_t Message Frame.
 265  *      @ioc: Pointer to MPT_ADAPTER structure
 266  *      @SCpnt: Pointer to scsi_cmnd structure
 267  *      @pReq: Pointer to SCSIIORequest_t structure
 268  *
 269  *      Returns ...
 270  */
 271 static int
 272 mptscsih_AddSGE(MPT_ADAPTER *ioc, struct scsi_cmnd *SCpnt,
 273                 SCSIIORequest_t *pReq, int req_idx)
 274 {
 275         char    *psge;
 276         char    *chainSge;
 277         struct scatterlist *sg;
 278         int      frm_sz;
 279         int      sges_left, sg_done;
 280         int      chain_idx = MPT_HOST_NO_CHAIN;
 281         int      sgeOffset;
 282         int      numSgeSlots, numSgeThisFrame;
 283         u32      sgflags, sgdir, thisxfer = 0;
 284         int      chain_dma_off = 0;
 285         int      newIndex;
 286         int      ii;
 287         dma_addr_t v2;
 288         u32     RequestNB;
 289
 290         sgdir = le32_to_cpu(pReq->Control) & MPI_SCSIIO_CONTROL_DATADIRECTION_MASK;
 291         if (sgdir == MPI_SCSIIO_CONTROL_WRITE)  {
 292                 sgdir = MPT_TRANSFER_HOST_TO_IOC;
 293         } else {
 294                 sgdir = MPT_TRANSFER_IOC_TO_HOST;
 295         }
 296
 297         psge = (char *) &pReq->SGL;
 298         frm_sz = ioc->req_sz;
 299
 300         /* Map the data portion, if any.
 301          * sges_left  = 0 if no data transfer.
 302          */
 303         if ( (sges_left = SCpnt->use_sg) ) {
 304                 sges_left = pci_map_sg(ioc->pcidev,
 305                                (struct scatterlist *) SCpnt->request_buffer,
 306                                SCpnt->use_sg,
 307                                SCpnt->sc_data_direction);
 308                 if (sges_left == 0)
 309                         return FAILED;
 310         } else if (SCpnt->request_bufflen) {
 311                 SCpnt->SCp.dma_handle = pci_map_single(ioc->pcidev,
 312                                       SCpnt->request_buffer,
 313                                       SCpnt->request_bufflen,
 314                                       SCpnt->sc_data_direction);
 315                 dsgprintk((MYIOC_s_INFO_FMT "SG: non-SG for %p, len=%d\n",
 316                                 ioc->name, SCpnt, SCpnt->request_bufflen));
 317                 mptscsih_add_sge((char *) &pReq->SGL,
 318                         0xD1000000|MPT_SGE_FLAGS_ADDRESSING|sgdir|SCpnt->request_bufflen,
 319                         SCpnt->SCp.dma_handle);
 320
 321                 return SUCCESS;
 322         }
 323
 324         /* Handle the SG case.
 325          */
 326         sg = (struct scatterlist *) SCpnt->request_buffer;
 327         sg_done  = 0;
 328         sgeOffset = sizeof(SCSIIORequest_t) - sizeof(SGE_IO_UNION);
 329         chainSge = NULL;
 330
 331         /* Prior to entering this loop - the following must be set
 332          * current MF:  sgeOffset (bytes)
 333          *              chainSge (Null if original MF is not a chain buffer)
 334          *              sg_done (num SGE done for this MF)
 335          */
 336
 337 nextSGEset:
 338         numSgeSlots = ((frm_sz - sgeOffset) / (sizeof(u32) + sizeof(dma_addr_t)) );
 339         numSgeThisFrame = (sges_left < numSgeSlots) ? sges_left : numSgeSlots;
 340
 341         sgflags = MPT_SGE_FLAGS_SIMPLE_ELEMENT | MPT_SGE_FLAGS_ADDRESSING | sgdir;
 342
 343         /* Get first (num - 1) SG elements
 344          * Skip any SG entries with a length of 0
 345          * NOTE: at finish, sg and psge pointed to NEXT data/location positions
 346          */
 347         for (ii=0; ii < (numSgeThisFrame-1); ii++) {
 348                 thisxfer = sg_dma_len(sg);
 349                 if (thisxfer == 0) {
 350                         sg ++; /* Get next SG element from the OS */
 351                         sg_done++;
 352                         continue;
 353                 }
 354
 355                 v2 = sg_dma_address(sg);
 356                 mptscsih_add_sge(psge, sgflags | thisxfer, v2);
 357
 358                 sg++;           /* Get next SG element from the OS */
 359                 psge += (sizeof(u32) + sizeof(dma_addr_t));
 360                 sgeOffset += (sizeof(u32) + sizeof(dma_addr_t));
 361                 sg_done++;
 362         }
 363
 364         if (numSgeThisFrame == sges_left) {
 365                 /* Add last element, end of buffer and end of list flags.
 366                  */
 367                 sgflags |= MPT_SGE_FLAGS_LAST_ELEMENT |
 368                                 MPT_SGE_FLAGS_END_OF_BUFFER |
 369                                 MPT_SGE_FLAGS_END_OF_LIST;
 370
 371                 /* Add last SGE and set termination flags.
 372                  * Note: Last SGE may have a length of 0 - which should be ok.
 373                  */
 374                 thisxfer = sg_dma_len(sg);
 375
 376                 v2 = sg_dma_address(sg);
 377                 mptscsih_add_sge(psge, sgflags | thisxfer, v2);
 378                 /*
 379                 sg++;
 380                 psge += (sizeof(u32) + sizeof(dma_addr_t));
 381                 */
 382                 sgeOffset += (sizeof(u32) + sizeof(dma_addr_t));
 383                 sg_done++;
 384
 385                 if (chainSge) {
 386                         /* The current buffer is a chain buffer,
 387                          * but there is not another one.
 388                          * Update the chain element
 389                          * Offset and Length fields.
 390                          */
 391                         mptscsih_add_chain((char *)chainSge, 0, sgeOffset, ioc->ChainBufferDMA + chain_dma_off);
 392                 } else {
 393                         /* The current buffer is the original MF
 394                          * and there is no Chain buffer.
 395                          */
 396                         pReq->ChainOffset = 0;
 397                         RequestNB = (((sgeOffset - 1) >> ioc->NBShiftFactor)  + 1) & 0x03;
 398                         dsgprintk((MYIOC_s_INFO_FMT
 399                             "Single Buffer RequestNB=%x, sgeOffset=%d\n", ioc->name, RequestNB, sgeOffset));
 400                         ioc->RequestNB[req_idx] = RequestNB;
 401                 }
 402         } else {
 403                 /* At least one chain buffer is needed.
 404                  * Complete the first MF
 405                  *  - last SGE element, set the LastElement bit
 406                  *  - set ChainOffset (words) for orig MF
 407                  *             (OR finish previous MF chain buffer)
 408                  *  - update MFStructPtr ChainIndex
 409                  *  - Populate chain element
 410                  * Also
 411                  * Loop until done.
 412                  */
 413
 414                 dsgprintk((MYIOC_s_INFO_FMT "SG: Chain Required! sg done %d\n",
 415                                 ioc->name, sg_done));
 416
 417                 /* Set LAST_ELEMENT flag for last non-chain element
 418                  * in the buffer. Since psge points at the NEXT
 419                  * SGE element, go back one SGE element, update the flags
 420                  * and reset the pointer. (Note: sgflags & thisxfer are already
 421                  * set properly).
 422                  */
 423                 if (sg_done) {
 424                         u32 *ptmp = (u32 *) (psge - (sizeof(u32) + sizeof(dma_addr_t)));
 425                         sgflags = le32_to_cpu(*ptmp);
 426                         sgflags |= MPT_SGE_FLAGS_LAST_ELEMENT;
 427                         *ptmp = cpu_to_le32(sgflags);
 428                 }
 429
 430                 if (chainSge) {
 431                         /* The current buffer is a chain buffer.
 432                          * chainSge points to the previous Chain Element.
 433                          * Update its chain element Offset and Length (must
 434                          * include chain element size) fields.
 435                          * Old chain element is now complete.
 436                          */
 437                         u8 nextChain = (u8) (sgeOffset >> 2);
 438                         sgeOffset += (sizeof(u32) + sizeof(dma_addr_t));
 439                         mptscsih_add_chain((char *)chainSge, nextChain, sgeOffset, ioc->ChainBufferDMA + chain_dma_off);
 440                 } else {
 441                         /* The original MF buffer requires a chain buffer -
 442                          * set the offset.
 443                          * Last element in this MF is a chain element.
 444                          */
 445                         pReq->ChainOffset = (u8) (sgeOffset >> 2);
 446                         RequestNB = (((sgeOffset - 1) >> ioc->NBShiftFactor)  + 1) & 0x03;
 447                         dsgprintk((MYIOC_s_ERR_FMT "Chain Buffer Needed, RequestNB=%x sgeOffset=%d\n", ioc->name, RequestNB, sgeOffset));
 448                         ioc->RequestNB[req_idx] = RequestNB;
 449                 }
 450
 451                 sges_left -= sg_done;
 452
 453
 454                 /* NOTE: psge points to the beginning of the chain element
 455                  * in current buffer. Get a chain buffer.
 456                  */
 457                 if ((mptscsih_getFreeChainBuffer(ioc, &newIndex)) == FAILED) {
 458                         dfailprintk((MYIOC_s_INFO_FMT
 459                             "getFreeChainBuffer FAILED SCSI cmd=%02x (%p)\n",
 460                             ioc->name, pReq->CDB[0], SCpnt));
 461                         return FAILED;
 462                 }
 463
 464                 /* Update the tracking arrays.
 465                  * If chainSge == NULL, update ReqToChain, else ChainToChain
 466                  */
 467                 if (chainSge) {
 468                         ioc->ChainToChain[chain_idx] = newIndex;
 469                 } else {
 470                         ioc->ReqToChain[req_idx] = newIndex;
 471                 }
 472                 chain_idx = newIndex;
 473                 chain_dma_off = ioc->req_sz * chain_idx;
 474
 475                 /* Populate the chainSGE for the current buffer.
 476                  * - Set chain buffer pointer to psge and fill
 477                  *   out the Address and Flags fields.
 478                  */
 479                 chainSge = (char *) psge;
 480                 dsgprintk((KERN_INFO "  Current buff @ %p (index 0x%x)",
 481                                 psge, req_idx));
 482
 483                 /* Start the SGE for the next buffer
 484                  */
 485                 psge = (char *) (ioc->ChainBuffer + chain_dma_off);
 486                 sgeOffset = 0;
 487                 sg_done = 0;
 488
 489                 dsgprintk((KERN_INFO "  Chain buff @ %p (index 0x%x)\n",
 490                                 psge, chain_idx));
 491
 492                 /* Start the SGE for the next buffer
 493                  */
 494
 495                 goto nextSGEset;
 496         }
 497
 498         return SUCCESS;
 499 } /* mptscsih_AddSGE() */
 500
 501 static void
 502 mptscsih_issue_sep_command(MPT_ADAPTER *ioc, VirtTarget *vtarget,
 503     U32 SlotStatus)
 504 {
 505         MPT_FRAME_HDR *mf;
 506         SEPRequest_t     *SEPMsg;
 507
 508         if (ioc->bus_type == FC)
 509                 return;
 510
 511         if ((mf = mpt_get_msg_frame(ioc->InternalCtx, ioc)) == NULL) {
 512                 dfailprintk((MYIOC_s_WARN_FMT "%s: no msg frames!!\n",
 513                     ioc->name,__FUNCTION__));
 514                 return;
 515         }
 516
 517         SEPMsg = (SEPRequest_t *)mf;
 518         SEPMsg->Function = MPI_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
 519         SEPMsg->Bus = vtarget->bus_id;
 520         SEPMsg->TargetID = vtarget->target_id;
 521         SEPMsg->Action = MPI_SEP_REQ_ACTION_WRITE_STATUS;
 522         SEPMsg->SlotStatus = SlotStatus;
 523         devtverboseprintk((MYIOC_s_WARN_FMT
 524             "Sending SEP cmd=%x id=%d bus=%d\n",
 525             ioc->name, SlotStatus, SEPMsg->TargetID, SEPMsg->Bus));
 526         mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
 527 }
 528
 529 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 530 /*
 531  *      mptscsih_io_done - Main SCSI IO callback routine registered to
 532  *      Fusion MPT (base) driver
 533  *      @ioc: Pointer to MPT_ADAPTER structure
 534  *      @mf: Pointer to original MPT request frame
 535  *      @r: Pointer to MPT reply frame (NULL if TurboReply)
 536  *
 537  *      This routine is called from mpt.c::mpt_interrupt() at the completion
 538  *      of any SCSI IO request.
 539  *      This routine is registered with the Fusion MPT (base) driver at driver
 540  *      load/init time via the mpt_register() API call.
 541  *
 542  *      Returns 1 indicating alloc'd request frame ptr should be freed.
 543  */
 544 int
 545 mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
 546 {
 547         struct scsi_cmnd        *sc;
 548         MPT_SCSI_HOST   *hd;
 549         SCSIIORequest_t *pScsiReq;
 550         SCSIIOReply_t   *pScsiReply;
 551         u16              req_idx, req_idx_MR;
 552         VirtDevice       *vdev;
 553         VirtTarget       *vtarget;
 554
 555         hd = (MPT_SCSI_HOST *) ioc->sh->hostdata;
 556
 557         req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
 558         req_idx_MR = (mr != NULL) ?
 559             le16_to_cpu(mr->u.frame.hwhdr.msgctxu.fld.req_idx) : req_idx;
 560         if ((req_idx != req_idx_MR) ||
 561             (mf->u.frame.linkage.arg1 == 0xdeadbeaf)) {
 562                 printk(MYIOC_s_ERR_FMT "Received a mf that was already freed\n",
 563                     ioc->name);
 564                 printk (MYIOC_s_ERR_FMT
 565                     "req_idx=%x req_idx_MR=%x mf=%p mr=%p sc=%p\n",
 566                     ioc->name, req_idx, req_idx_MR, mf, mr,
 567                     hd->ScsiLookup[req_idx_MR]);
 568                 return 0;
 569         }
 570
 571         sc = hd->ScsiLookup[req_idx];
 572         if (sc == NULL) {
 573                 MPIHeader_t *hdr = (MPIHeader_t *)mf;
 574
 575                 /* Remark: writeSDP1 will use the ScsiDoneCtx
 576                  * If a SCSI I/O cmd, device disabled by OS and
 577                  * completion done. Cannot touch sc struct. Just free mem.
 578                  */
 579                 if (hdr->Function == MPI_FUNCTION_SCSI_IO_REQUEST)
 580                         printk(MYIOC_s_ERR_FMT "NULL ScsiCmd ptr!\n",
 581                         ioc->name);
 582
 583                 mptscsih_freeChainBuffers(ioc, req_idx);
 584                 return 1;
 585         }
 586
 587         sc->result = DID_OK << 16;              /* Set default reply as OK */
 588         pScsiReq = (SCSIIORequest_t *) mf;
 589         pScsiReply = (SCSIIOReply_t *) mr;
 590
 591         if((ioc->facts.MsgVersion >= MPI_VERSION_01_05) && pScsiReply){
 592                 dmfprintk((MYIOC_s_INFO_FMT
 593                         "ScsiDone (mf=%p,mr=%p,sc=%p,idx=%d,task-tag=%d)\n",
 594                         ioc->name, mf, mr, sc, req_idx, pScsiReply->TaskTag));
 595         }else{
 596                 dmfprintk((MYIOC_s_INFO_FMT
 597                         "ScsiDone (mf=%p,mr=%p,sc=%p,idx=%d)\n",
 598                         ioc->name, mf, mr, sc, req_idx));
 599         }
 600
 601         if (pScsiReply == NULL) {
 602                 /* special context reply handling */
 603                 ;
 604         } else {
 605                 u32      xfer_cnt;
 606                 u16      status;
 607                 u8       scsi_state, scsi_status;
 608
 609                 status = le16_to_cpu(pScsiReply->IOCStatus) & MPI_IOCSTATUS_MASK;
 610                 scsi_state = pScsiReply->SCSIState;
 611                 scsi_status = pScsiReply->SCSIStatus;
 612                 xfer_cnt = le32_to_cpu(pScsiReply->TransferCount);
 613                 sc->resid = sc->request_bufflen - xfer_cnt;
 614
 615                 /*
 616                  *  if we get a data underrun indication, yet no data was
 617                  *  transferred and the SCSI status indicates that the
 618                  *  command was never started, change the data underrun
 619                  *  to success
 620                  */
 621                 if (status == MPI_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
 622                     (scsi_status == MPI_SCSI_STATUS_BUSY ||
 623                      scsi_status == MPI_SCSI_STATUS_RESERVATION_CONFLICT ||
 624                      scsi_status == MPI_SCSI_STATUS_TASK_SET_FULL)) {
 625                         status = MPI_IOCSTATUS_SUCCESS;
 626                 }
 627
 628                 dreplyprintk((KERN_NOTICE "Reply ha=%d id=%d lun=%d:\n"
 629                         "IOCStatus=%04xh SCSIState=%02xh SCSIStatus=%02xh\n"
 630                         "resid=%d bufflen=%d xfer_cnt=%d\n",
 631                         ioc->id, sc->device->id, sc->device->lun,
 632                         status, scsi_state, scsi_status, sc->resid,
 633                         sc->request_bufflen, xfer_cnt));
 634
 635                 if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID)
 636                         mptscsih_copy_sense_data(sc, hd, mf, pScsiReply);
 637
 638                 /*
 639                  *  Look for + dump FCP ResponseInfo[]!
 640                  */
 641                 if (scsi_state & MPI_SCSI_STATE_RESPONSE_INFO_VALID &&
 642                     pScsiReply->ResponseInfo) {
 643                         printk(KERN_NOTICE "ha=%d id=%d lun=%d: "
 644                         "FCP_ResponseInfo=%08xh\n",
 645                         ioc->id, sc->device->id, sc->device->lun,
 646                         le32_to_cpu(pScsiReply->ResponseInfo));
 647                 }
 648
 649                 switch(status) {
 650                 case MPI_IOCSTATUS_BUSY:                        /* 0x0002 */
 651                         /* CHECKME!
 652                          * Maybe: DRIVER_BUSY | SUGGEST_RETRY | DID_SOFT_ERROR (retry)
 653                          * But not: DID_BUS_BUSY lest one risk
 654                          * killing interrupt handler:-(
 655                          */
 656                         sc->result = SAM_STAT_BUSY;
 657                         break;
 658
 659                 case MPI_IOCSTATUS_SCSI_INVALID_BUS:            /* 0x0041 */
 660                 case MPI_IOCSTATUS_SCSI_INVALID_TARGETID:       /* 0x0042 */
 661                         sc->result = DID_BAD_TARGET << 16;
 662                         break;
 663
 664                 case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:       /* 0x0043 */
 665                         /* Spoof to SCSI Selection Timeout! */
 666                         if (ioc->bus_type != FC)
 667                                 sc->result = DID_NO_CONNECT << 16;
 668                         /* else fibre, just stall until rescan event */
 669                         else
 670                                 sc->result = DID_REQUEUE << 16;
 671
 672                         if (hd->sel_timeout[pScsiReq->TargetID] < 0xFFFF)
 673                                 hd->sel_timeout[pScsiReq->TargetID]++;
 674
 675                         vdev = sc->device->hostdata;
 676                         if (!vdev)
 677                                 break;
 678                         vtarget = vdev->vtarget;
 679                         if (vtarget->tflags & MPT_TARGET_FLAGS_LED_ON) {
 680                                 mptscsih_issue_sep_command(ioc, vtarget,
 681                                     MPI_SEP_REQ_SLOTSTATUS_UNCONFIGURED);
 682                                 vtarget->tflags &= ~MPT_TARGET_FLAGS_LED_ON;
 683                         }
 684                         break;
 685
 686                 case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:         /* 0x004B */
 687                         if ( ioc->bus_type == SAS ) {
 688                                 u16 ioc_status = le16_to_cpu(pScsiReply->IOCStatus);
 689                                 if (ioc_status & MPI_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE) {
 690                                         u32 log_info = le32_to_cpu(mr->u.reply.IOCLogInfo);
 691                                         log_info &=SAS_LOGINFO_MASK;
 692                                         if (log_info == SAS_LOGINFO_NEXUS_LOSS) {
 693                                                 sc->result = (DID_BUS_BUSY << 16);
 694                                                 break;
 695                                         }
 696                                 }
 697                         }
 698
 699                         /*
 700                          * Allow non-SAS & non-NEXUS_LOSS to drop into below code
 701                          */
 702
 703                 case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:        /* 0x0048 */
 704                 case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:         /* 0x004C */
 705                         /* Linux handles an unsolicited DID_RESET better
 706                          * than an unsolicited DID_ABORT.
 707                          */
 708                         sc->result = DID_RESET << 16;
 709
 710                         break;
 711
 712                 case MPI_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:      /* 0x0049 */
 713                         sc->resid = sc->request_bufflen - xfer_cnt;
 714                         if((xfer_cnt==0)||(sc->underflow > xfer_cnt))
 715                                 sc->result=DID_SOFT_ERROR << 16;
 716                         else /* Sufficient data transfer occurred */
 717                                 sc->result = (DID_OK << 16) | scsi_status;
 718                         dreplyprintk((KERN_NOTICE
 719                             "RESIDUAL_MISMATCH: result=%x on id=%d\n", sc->result, sc->device->id));
 720                         break;
 721
 722                 case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:          /* 0x0045 */
 723                         /*
 724                          *  Do upfront check for valid SenseData and give it
 725                          *  precedence!
 726                          */
 727                         sc->result = (DID_OK << 16) | scsi_status;
 728                         if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID) {
 729                                 /* Have already saved the status and sense data
 730                                  */
 731                                 ;
 732                         } else {
 733                                 if (xfer_cnt < sc->underflow) {
 734                                         if (scsi_status == SAM_STAT_BUSY)
 735                                                 sc->result = SAM_STAT_BUSY;
 736                                         else
 737                                                 sc->result = DID_SOFT_ERROR << 16;
 738                                 }
 739                                 if (scsi_state & (MPI_SCSI_STATE_AUTOSENSE_FAILED | MPI_SCSI_STATE_NO_SCSI_STATUS)) {
 740                                         /* What to do?
 741                                         */
 742                                         sc->result = DID_SOFT_ERROR << 16;
 743                                 }
 744                                 else if (scsi_state & MPI_SCSI_STATE_TERMINATED) {
 745                                         /*  Not real sure here either...  */
 746                                         sc->result = DID_RESET << 16;
 747                                 }
 748                         }
 749
 750                         dreplyprintk((KERN_NOTICE "  sc->underflow={report ERR if < %02xh bytes xfer'd}\n",
 751                                         sc->underflow));
 752                         dreplyprintk((KERN_NOTICE "  ActBytesXferd=%02xh\n", xfer_cnt));
 753                         /* Report Queue Full
 754                          */
 755                         if (scsi_status == MPI_SCSI_STATUS_TASK_SET_FULL)
 756                                 mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
 757
 758                         break;
 759
 760                 case MPI_IOCSTATUS_SCSI_DATA_OVERRUN:           /* 0x0044 */
 761                         sc->resid=0;
 762                 case MPI_IOCSTATUS_SCSI_RECOVERED_ERROR:        /* 0x0040 */
 763                 case MPI_IOCSTATUS_SUCCESS:                     /* 0x0000 */
 764                         if (scsi_status == MPI_SCSI_STATUS_BUSY)
 765                                 sc->result = (DID_BUS_BUSY << 16) | scsi_status;
 766                         else
 767                                 sc->result = (DID_OK << 16) | scsi_status;
 768                         if (scsi_state == 0) {
 769                                 ;
 770                         } else if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID) {
 771                                 /*
 772                                  * If running against circa 200003dd 909 MPT f/w,
 773                                  * may get this (AUTOSENSE_VALID) for actual TASK_SET_FULL
 774                                  * (QUEUE_FULL) returned from device! --> get 0x0000?128
 775                                  * and with SenseBytes set to 0.
 776                                  */
 777                                 if (pScsiReply->SCSIStatus == MPI_SCSI_STATUS_TASK_SET_FULL)
 778                                         mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
 779
 780                         }
 781                         else if (scsi_state &
 782                                  (MPI_SCSI_STATE_AUTOSENSE_FAILED | MPI_SCSI_STATE_NO_SCSI_STATUS)
 783                            ) {
 784                                 /*
 785                                  * What to do?
 786                                  */
 787                                 sc->result = DID_SOFT_ERROR << 16;
 788                         }
 789                         else if (scsi_state & MPI_SCSI_STATE_TERMINATED) {
 790                                 /*  Not real sure here either...  */
 791                                 sc->result = DID_RESET << 16;
 792                         }
 793                         else if (scsi_state & MPI_SCSI_STATE_QUEUE_TAG_REJECTED) {
 794                                 /* Device Inq. data indicates that it supports
 795                                  * QTags, but rejects QTag messages.
 796                                  * This command completed OK.
 797                                  *
 798                                  * Not real sure here either so do nothing...  */
 799                         }
 800
 801                         if (sc->result == MPI_SCSI_STATUS_TASK_SET_FULL)
 802                                 mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
 803
 804                         /* Add handling of:
 805                          * Reservation Conflict, Busy,
 806                          * Command Terminated, CHECK
 807                          */
 808                         break;
 809
 810                 case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:         /* 0x0047 */
 811                         sc->result = DID_SOFT_ERROR << 16;
 812                         break;
 813
 814                 case MPI_IOCSTATUS_INVALID_FUNCTION:            /* 0x0001 */
 815                 case MPI_IOCSTATUS_INVALID_SGL:                 /* 0x0003 */
 816                 case MPI_IOCSTATUS_INTERNAL_ERROR:              /* 0x0004 */
 817                 case MPI_IOCSTATUS_RESERVED:                    /* 0x0005 */
 818                 case MPI_IOCSTATUS_INSUFFICIENT_RESOURCES:      /* 0x0006 */
 819                 case MPI_IOCSTATUS_INVALID_FIELD:               /* 0x0007 */
 820                 case MPI_IOCSTATUS_INVALID_STATE:               /* 0x0008 */
 821                 case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:          /* 0x0046 */
 822                 case MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED:       /* 0x004A */
 823                 default:
 824                         /*
 825                          * What to do?
 826                          */
 827                         sc->result = DID_SOFT_ERROR << 16;
 828                         break;
 829
 830                 }       /* switch(status) */
 831
 832                 dreplyprintk((KERN_NOTICE "  sc->result is %08xh\n", sc->result));
 833         } /* end of address reply case */
 834
 835         /* Unmap the DMA buffers, if any. */
 836         if (sc->use_sg) {
 837                 pci_unmap_sg(ioc->pcidev, (struct scatterlist *) sc->request_buffer,
 838                             sc->use_sg, sc->sc_data_direction);
 839         } else if (sc->request_bufflen) {
 840                 pci_unmap_single(ioc->pcidev, sc->SCp.dma_handle,
 841                                 sc->request_bufflen, sc->sc_data_direction);
 842         }
 843
 844         hd->ScsiLookup[req_idx] = NULL;
 845
 846         sc->scsi_done(sc);              /* Issue the command callback */
 847
 848         /* Free Chain buffers */
 849         mptscsih_freeChainBuffers(ioc, req_idx);
 850         return 1;
 851 }
 852
 853 /*
 854  *      mptscsih_flush_running_cmds - For each command found, search
 855  *              Scsi_Host instance taskQ and reply to OS.
 856  *              Called only if recovering from a FW reload.
 857  *      @hd: Pointer to a SCSI HOST structure
 858  *
 859  *      Returns: None.
 860  *
 861  *      Must be called while new I/Os are being queued.
 862  */
 863 static void
 864 mptscsih_flush_running_cmds(MPT_SCSI_HOST *hd)
 865 {
 866         MPT_ADAPTER *ioc = hd->ioc;
 867         struct scsi_cmnd        *SCpnt;
 868         MPT_FRAME_HDR   *mf;
 869         int              ii;
 870         int              max = ioc->req_depth;
 871
 872         dprintk((KERN_INFO MYNAM ": flush_ScsiLookup called\n"));
 873         for (ii= 0; ii < max; ii++) {
 874                 if ((SCpnt = hd->ScsiLookup[ii]) != NULL) {
 875
 876                         /* Command found.
 877                          */
 878
 879                         /* Null ScsiLookup index
 880                          */
 881                         hd->ScsiLookup[ii] = NULL;
 882
 883                         mf = MPT_INDEX_2_MFPTR(ioc, ii);
 884                         dmfprintk(( "flush: ScsiDone (mf=%p,sc=%p)\n",
 885                                         mf, SCpnt));
 886
 887                         /* Set status, free OS resources (SG DMA buffers)
 888                          * Do OS callback
 889                          * Free driver resources (chain, msg buffers)
 890                          */
 891                         if (SCpnt->use_sg) {
 892                                 pci_unmap_sg(ioc->pcidev,
 893                                         (struct scatterlist *) SCpnt->request_buffer,
 894                                         SCpnt->use_sg,
 895                                         SCpnt->sc_data_direction);
 896                         } else if (SCpnt->request_bufflen) {
 897                                 pci_unmap_single(ioc->pcidev,
 898                                         SCpnt->SCp.dma_handle,
 899                                         SCpnt->request_bufflen,
 900                                         SCpnt->sc_data_direction);
 901                         }
 902                         SCpnt->result = DID_RESET << 16;
 903                         SCpnt->host_scribble = NULL;
 904
 905                         /* Free Chain buffers */
 906                         mptscsih_freeChainBuffers(ioc, ii);
 907
 908                         /* Free Message frames */
 909                         mpt_free_msg_frame(ioc, mf);
 910
 911                         SCpnt->scsi_done(SCpnt);        /* Issue the command callback */
 912                 }
 913         }
 914
 915         return;
 916 }
 917
 918 /*
 919  *      mptscsih_search_running_cmds - Delete any commands associated
 920  *              with the specified target and lun. Function called only
 921  *              when a lun is disable by mid-layer.
 922  *              Do NOT access the referenced scsi_cmnd structure or
 923  *              members. Will cause either a paging or NULL ptr error.
 924  *              (BUT, BUT, BUT, the code does reference it! - mdr)
 925  *      @hd: Pointer to a SCSI HOST structure
 926  *      @vdevice: per device private data
 927  *
 928  *      Returns: None.
 929  *
 930  *      Called from slave_destroy.
 931  */
 932 static void
 933 mptscsih_search_running_cmds(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
 934 {
 935         SCSIIORequest_t *mf = NULL;
 936         int              ii;
 937         int              max = hd->ioc->req_depth;
 938         struct scsi_cmnd *sc;
 939
 940         dsprintk((KERN_INFO MYNAM ": search_running target %d lun %d max %d\n",
 941                         vdevice->vtarget->target_id, vdevice->lun, max));
 942
 943         for (ii=0; ii < max; ii++) {
 944                 if ((sc = hd->ScsiLookup[ii]) != NULL) {
 945
 946                         mf = (SCSIIORequest_t *)MPT_INDEX_2_MFPTR(hd->ioc, ii);
 947
 948                         dsprintk(( "search_running: found (sc=%p, mf = %p) target %d, lun %d \n",
 949                                         hd->ScsiLookup[ii], mf, mf->TargetID, mf->LUN[1]));
 950
 951                         if ((mf->TargetID != ((u8)vdevice->vtarget->target_id)) || (mf->LUN[1] != ((u8) vdevice->lun)))
 952                                 continue;
 953
 954                         /* Cleanup
 955                          */
 956                         hd->ScsiLookup[ii] = NULL;
 957                         mptscsih_freeChainBuffers(hd->ioc, ii);
 958                         mpt_free_msg_frame(hd->ioc, (MPT_FRAME_HDR *)mf);
 959                         if (sc->use_sg) {
 960                                 pci_unmap_sg(hd->ioc->pcidev,
 961                                 (struct scatterlist *) sc->request_buffer,
 962                                         sc->use_sg,
 963                                         sc->sc_data_direction);
 964                         } else if (sc->request_bufflen) {
 965                                 pci_unmap_single(hd->ioc->pcidev,
 966                                         sc->SCp.dma_handle,
 967                                         sc->request_bufflen,
 968                                         sc->sc_data_direction);
 969                         }
 970                         sc->host_scribble = NULL;
 971                         sc->result = DID_NO_CONNECT << 16;
 972                         sc->scsi_done(sc);
 973                 }
 974         }
 975         return;
 976 }
 977
 978 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 979
 980 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 981 /*
 982  *      mptscsih_report_queue_full - Report QUEUE_FULL status returned
 983  *      from a SCSI target device.
 984  *      @sc: Pointer to scsi_cmnd structure
 985  *      @pScsiReply: Pointer to SCSIIOReply_t
 986  *      @pScsiReq: Pointer to original SCSI request
 987  *
 988  *      This routine periodically reports QUEUE_FULL status returned from a
 989  *      SCSI target device.  It reports this to the console via kernel
 990  *      printk() API call, not more than once every 10 seconds.
 991  */
 992 static void
 993 mptscsih_report_queue_full(struct scsi_cmnd *sc, SCSIIOReply_t *pScsiReply, SCSIIORequest_t *pScsiReq)
 994 {
 995         long time = jiffies;
 996         MPT_SCSI_HOST           *hd;
 997
 998         if (sc->device == NULL)
 999                 return;
1000         if (sc->device->host == NULL)
1001                 return;
1002         if ((hd = (MPT_SCSI_HOST *)sc->device->host->hostdata) == NULL)
1003                 return;
1004
1005         if (time - hd->last_queue_full > 10 * HZ) {
1006                 dprintk((MYIOC_s_WARN_FMT "Device (%d:%d:%d) reported QUEUE_FULL!\n",
1007                                 hd->ioc->name, 0, sc->device->id, sc->device->lun));
1008                 hd->last_queue_full = time;
1009         }
1010 }
1011
1012 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1013 /*
1014  *      mptscsih_remove - Removed scsi devices
1015  *      @pdev: Pointer to pci_dev structure
1016  *
1017  *
1018  */
1019 void
1020 mptscsih_remove(struct pci_dev *pdev)
1021 {
1022         MPT_ADAPTER             *ioc = pci_get_drvdata(pdev);
1023         struct Scsi_Host        *host = ioc->sh;
1024         MPT_SCSI_HOST           *hd;
1025         int sz1;
1026
1027         if(!host) {
1028                 mpt_detach(pdev);
1029                 return;
1030         }
1031
1032         scsi_remove_host(host);
1033
1034         if((hd = (MPT_SCSI_HOST *)host->hostdata) == NULL)
1035                 return;
1036
1037         mptscsih_shutdown(pdev);
1038
1039         sz1=0;
1040
1041         if (hd->ScsiLookup != NULL) {
1042                 sz1 = hd->ioc->req_depth * sizeof(void *);
1043                 kfree(hd->ScsiLookup);
1044                 hd->ScsiLookup = NULL;
1045         }
1046
1047         /*
1048          * Free pointer array.
1049          */
1050         kfree(hd->Targets);
1051         hd->Targets = NULL;
1052
1053         dprintk((MYIOC_s_INFO_FMT
1054             "Free'd ScsiLookup (%d) memory\n",
1055             hd->ioc->name, sz1));
1056
1057         kfree(hd->info_kbuf);
1058
1059         /* NULL the Scsi_Host pointer
1060          */
1061         hd->ioc->sh = NULL;
1062
1063         scsi_host_put(host);
1064
1065         mpt_detach(pdev);
1066
1067 }
1068
1069 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1070 /*
1071  *      mptscsih_shutdown - reboot notifier
1072  *
1073  */
1074 void
1075 mptscsih_shutdown(struct pci_dev *pdev)
1076 {
1077         MPT_ADAPTER             *ioc = pci_get_drvdata(pdev);
1078         struct Scsi_Host        *host = ioc->sh;
1079         MPT_SCSI_HOST           *hd;
1080
1081         if(!host)
1082                 return;
1083
1084         hd = (MPT_SCSI_HOST *)host->hostdata;
1085
1086 }
1087
1088 #ifdef CONFIG_PM
1089 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1090 /*
1091  *      mptscsih_suspend - Fusion MPT scsi driver suspend routine.
1092  *
1093  *
1094  */
1095 int
1096 mptscsih_suspend(struct pci_dev *pdev, pm_message_t state)
1097 {
1098         mptscsih_shutdown(pdev);
1099         return mpt_suspend(pdev,state);
1100 }
1101
1102 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1103 /*
1104  *      mptscsih_resume - Fusion MPT scsi driver resume routine.
1105  *
1106  *
1107  */
1108 int
1109 mptscsih_resume(struct pci_dev *pdev)
1110 {
1111         MPT_ADAPTER             *ioc = pci_get_drvdata(pdev);
1112         struct Scsi_Host        *host = ioc->sh;
1113         MPT_SCSI_HOST           *hd;
1114
1115         mpt_resume(pdev);
1116
1117         if(!host)
1118                 return 0;
1119
1120         hd = (MPT_SCSI_HOST *)host->hostdata;
1121         if(!hd)
1122                 return 0;
1123
1124         return 0;
1125 }
1126
1127 #endif
1128
1129 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1130 /**
1131  *      mptscsih_info - Return information about MPT adapter
1132  *      @SChost: Pointer to Scsi_Host structure
1133  *
1134  *      (linux scsi_host_template.info routine)
1135  *
1136  *      Returns pointer to buffer where information was written.
1137  */
1138 const char *
1139 mptscsih_info(struct Scsi_Host *SChost)
1140 {
1141         MPT_SCSI_HOST *h;
1142         int size = 0;
1143
1144         h = (MPT_SCSI_HOST *)SChost->hostdata;
1145
1146         if (h) {
1147                 if (h->info_kbuf == NULL)
1148                         if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL)
1149                                 return h->info_kbuf;
1150                 h->info_kbuf[0] = '\0';
1151
1152                 mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0);
1153                 h->info_kbuf[size-1] = '\0';
1154         }
1155
1156         return h->info_kbuf;
1157 }
1158
1159 struct info_str {
1160         char *buffer;
1161         int   length;
1162         int   offset;
1163         int   pos;
1164 };
1165
1166 static void
1167 mptscsih_copy_mem_info(struct info_str *info, char *data, int len)
1168 {
1169         if (info->pos + len > info->length)
1170                 len = info->length - info->pos;
1171
1172         if (info->pos + len < info->offset) {
1173                 info->pos += len;
1174                 return;
1175         }
1176
1177         if (info->pos < info->offset) {
1178                 data += (info->offset - info->pos);
1179                 len  -= (info->offset - info->pos);
1180         }
1181
1182         if (len > 0) {
1183                 memcpy(info->buffer + info->pos, data, len);
1184                 info->pos += len;
1185         }
1186 }
1187
1188 static int
1189 mptscsih_copy_info(struct info_str *info, char *fmt, ...)
1190 {
1191         va_list args;
1192         char buf[81];
1193         int len;
1194
1195         va_start(args, fmt);
1196         len = vsprintf(buf, fmt, args);
1197         va_end(args);
1198
1199         mptscsih_copy_mem_info(info, buf, len);
1200         return len;
1201 }
1202
1203 static int
1204 mptscsih_host_info(MPT_ADAPTER *ioc, char *pbuf, off_t offset, int len)
1205 {
1206         struct info_str info;
1207
1208         info.buffer     = pbuf;
1209         info.length     = len;
1210         info.offset     = offset;
1211         info.pos        = 0;
1212
1213         mptscsih_copy_info(&info, "%s: %s, ", ioc->name, ioc->prod_name);
1214         mptscsih_copy_info(&info, "%s%08xh, ", MPT_FW_REV_MAGIC_ID_STRING, ioc->facts.FWVersion.Word);
1215         mptscsih_copy_info(&info, "Ports=%d, ", ioc->facts.NumberOfPorts);
1216         mptscsih_copy_info(&info, "MaxQ=%d\n", ioc->req_depth);
1217
1218         return ((info.pos > info.offset) ? info.pos - info.offset : 0);
1219 }
1220
1221 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1222 /**
1223  *      mptscsih_proc_info - Return information about MPT adapter
1224  *
1225  *      (linux scsi_host_template.info routine)
1226  *
1227  *      buffer: if write, user data; if read, buffer for user
1228  *      length: if write, return length;
1229  *      offset: if write, 0; if read, the current offset into the buffer from
1230  *              the previous read.
1231  *      hostno: scsi host number
1232  *      func:   if write = 1; if read = 0
1233  */
1234 int
1235 mptscsih_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
1236                         int length, int func)
1237 {
1238         MPT_SCSI_HOST   *hd = (MPT_SCSI_HOST *)host->hostdata;
1239         MPT_ADAPTER     *ioc = hd->ioc;
1240         int size = 0;
1241
1242         if (func) {
1243                 /*
1244                  * write is not supported
1245                  */
1246         } else {
1247                 if (start)
1248                         *start = buffer;
1249
1250                 size = mptscsih_host_info(ioc, buffer, offset, length);
1251         }
1252
1253         return size;
1254 }
1255
1256 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1257 #define ADD_INDEX_LOG(req_ent)  do { } while(0)
1258
1259 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1260 /**
1261  *      mptscsih_qcmd - Primary Fusion MPT SCSI initiator IO start routine.
1262  *      @SCpnt: Pointer to scsi_cmnd structure
1263  *      @done: Pointer SCSI mid-layer IO completion function
1264  *
1265  *      (linux scsi_host_template.queuecommand routine)
1266  *      This is the primary SCSI IO start routine.  Create a MPI SCSIIORequest
1267  *      from a linux scsi_cmnd request and send it to the IOC.
1268  *
1269  *      Returns 0. (rtn value discarded by linux scsi mid-layer)
1270  */
1271 int
1272 mptscsih_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
1273 {
1274         MPT_SCSI_HOST           *hd;
1275         MPT_FRAME_HDR           *mf;
1276         SCSIIORequest_t         *pScsiReq;
1277         VirtDevice              *vdev = SCpnt->device->hostdata;
1278         int      lun;
1279         u32      datalen;
1280         u32      scsictl;
1281         u32      scsidir;
1282         u32      cmd_len;
1283         int      my_idx;
1284         int      ii;
1285
1286         hd = (MPT_SCSI_HOST *) SCpnt->device->host->hostdata;
1287         lun = SCpnt->device->lun;
1288         SCpnt->scsi_done = done;
1289
1290         dmfprintk((MYIOC_s_INFO_FMT "qcmd: SCpnt=%p, done()=%p\n",
1291                         (hd && hd->ioc) ? hd->ioc->name : "ioc?", SCpnt, done));
1292
1293         if (hd->resetPending) {
1294                 dtmprintk((MYIOC_s_WARN_FMT "qcmd: SCpnt=%p timeout + 60HZ\n",
1295                         (hd && hd->ioc) ? hd->ioc->name : "ioc?", SCpnt));
1296                 return SCSI_MLQUEUE_HOST_BUSY;
1297         }
1298
1299         if ((hd->ioc->bus_type == SPI) &&
1300             vdev->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT &&
1301             mptscsih_raid_id_to_num(hd, SCpnt->device->id) < 0) {
1302                 SCpnt->result = DID_NO_CONNECT << 16;
1303                 done(SCpnt);
1304                 return 0;
1305         }
1306
1307         /*
1308          *  Put together a MPT SCSI request...
1309          */
1310         if ((mf = mpt_get_msg_frame(hd->ioc->DoneCtx, hd->ioc)) == NULL) {
1311                 dprintk((MYIOC_s_WARN_FMT "QueueCmd, no msg frames!!\n",
1312                                 hd->ioc->name));
1313                 return SCSI_MLQUEUE_HOST_BUSY;
1314         }
1315
1316         pScsiReq = (SCSIIORequest_t *) mf;
1317
1318         my_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
1319
1320         ADD_INDEX_LOG(my_idx);
1321
1322         /*    TUR's being issued with scsictl=0x02000000 (DATA_IN)!
1323          *    Seems we may receive a buffer (datalen>0) even when there
1324          *    will be no data transfer!  GRRRRR...
1325          */
1326         if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) {
1327                 datalen = SCpnt->request_bufflen;
1328                 scsidir = MPI_SCSIIO_CONTROL_READ;      /* DATA IN  (host<--ioc<--dev) */
1329         } else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) {
1330                 datalen = SCpnt->request_bufflen;
1331                 scsidir = MPI_SCSIIO_CONTROL_WRITE;     /* DATA OUT (host-->ioc-->dev) */
1332         } else {
1333                 datalen = 0;
1334                 scsidir = MPI_SCSIIO_CONTROL_NODATATRANSFER;
1335         }
1336
1337         /* Default to untagged. Once a target structure has been allocated,
1338          * use the Inquiry data to determine if device supports tagged.
1339          */
1340         if (vdev
1341             && (vdev->vtarget->tflags & MPT_TARGET_FLAGS_Q_YES)
1342             && (SCpnt->device->tagged_supported)) {
1343                 scsictl = scsidir | MPI_SCSIIO_CONTROL_SIMPLEQ;
1344         } else {
1345                 scsictl = scsidir | MPI_SCSIIO_CONTROL_UNTAGGED;
1346         }
1347
1348         /* Use the above information to set up the message frame
1349          */
1350         pScsiReq->TargetID = (u8) vdev->vtarget->target_id;
1351         pScsiReq->Bus = vdev->vtarget->bus_id;
1352         pScsiReq->ChainOffset = 0;
1353         if (vdev->vtarget->tflags &  MPT_TARGET_FLAGS_RAID_COMPONENT)
1354                 pScsiReq->Function = MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
1355         else
1356                 pScsiReq->Function = MPI_FUNCTION_SCSI_IO_REQUEST;
1357         pScsiReq->CDBLength = SCpnt->cmd_len;
1358         pScsiReq->SenseBufferLength = MPT_SENSE_BUFFER_SIZE;
1359         pScsiReq->Reserved = 0;
1360         pScsiReq->MsgFlags = mpt_msg_flags();
1361         pScsiReq->LUN[0] = 0;
1362         pScsiReq->LUN[1] = lun;
1363         pScsiReq->LUN[2] = 0;
1364         pScsiReq->LUN[3] = 0;
1365         pScsiReq->LUN[4] = 0;
1366         pScsiReq->LUN[5] = 0;
1367         pScsiReq->LUN[6] = 0;
1368         pScsiReq->LUN[7] = 0;
1369         pScsiReq->Control = cpu_to_le32(scsictl);
1370
1371         /*
1372          *  Write SCSI CDB into the message
1373          */
1374         cmd_len = SCpnt->cmd_len;
1375         for (ii=0; ii < cmd_len; ii++)
1376                 pScsiReq->CDB[ii] = SCpnt->cmnd[ii];
1377
1378         for (ii=cmd_len; ii < 16; ii++)
1379                 pScsiReq->CDB[ii] = 0;
1380
1381         /* DataLength */
1382         pScsiReq->DataLength = cpu_to_le32(datalen);
1383
1384         /* SenseBuffer low address */
1385         pScsiReq->SenseBufferLowAddr = cpu_to_le32(hd->ioc->sense_buf_low_dma
1386                                            + (my_idx * MPT_SENSE_BUFFER_ALLOC));
1387
1388         /* Now add the SG list
1389          * Always have a SGE even if null length.
1390          */
1391         if (datalen == 0) {
1392                 /* Add a NULL SGE */
1393                 mptscsih_add_sge((char *)&pScsiReq->SGL, MPT_SGE_FLAGS_SSIMPLE_READ | 0,
1394                         (dma_addr_t) -1);
1395         } else {
1396                 /* Add a 32 or 64 bit SGE */
1397                 if (mptscsih_AddSGE(hd->ioc, SCpnt, pScsiReq, my_idx) != SUCCESS)
1398                         goto fail;
1399         }
1400
1401         hd->ScsiLookup[my_idx] = SCpnt;
1402         SCpnt->host_scribble = NULL;
1403
1404         mpt_put_msg_frame(hd->ioc->DoneCtx, hd->ioc, mf);
1405         dmfprintk((MYIOC_s_INFO_FMT "Issued SCSI cmd (%p) mf=%p idx=%d\n",
1406                         hd->ioc->name, SCpnt, mf, my_idx));
1407         DBG_DUMP_REQUEST_FRAME(mf)
1408         return 0;
1409
1410  fail:
1411         hd->ScsiLookup[my_idx] = NULL;
1412         mptscsih_freeChainBuffers(hd->ioc, my_idx);
1413         mpt_free_msg_frame(hd->ioc, mf);
1414         return SCSI_MLQUEUE_HOST_BUSY;
1415 }
1416
1417 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1418 /*
1419  *      mptscsih_freeChainBuffers - Function to free chain buffers associated
1420  *      with a SCSI IO request
1421  *      @hd: Pointer to the MPT_SCSI_HOST instance
1422  *      @req_idx: Index of the SCSI IO request frame.
1423  *
1424  *      Called if SG chain buffer allocation fails and mptscsih callbacks.
1425  *      No return.
1426  */
1427 static void
1428 mptscsih_freeChainBuffers(MPT_ADAPTER *ioc, int req_idx)
1429 {
1430         MPT_FRAME_HDR *chain;
1431         unsigned long flags;
1432         int chain_idx;
1433         int next;
1434
1435         /* Get the first chain index and reset
1436          * tracker state.
1437          */
1438         chain_idx = ioc->ReqToChain[req_idx];
1439         ioc->ReqToChain[req_idx] = MPT_HOST_NO_CHAIN;
1440
1441         while (chain_idx != MPT_HOST_NO_CHAIN) {
1442
1443                 /* Save the next chain buffer index */
1444                 next = ioc->ChainToChain[chain_idx];
1445
1446                 /* Free this chain buffer and reset
1447                  * tracker
1448                  */
1449                 ioc->ChainToChain[chain_idx] = MPT_HOST_NO_CHAIN;
1450
1451                 chain = (MPT_FRAME_HDR *) (ioc->ChainBuffer
1452                                         + (chain_idx * ioc->req_sz));
1453
1454                 spin_lock_irqsave(&ioc->FreeQlock, flags);
1455                 list_add_tail(&chain->u.frame.linkage.list, &ioc->FreeChainQ);
1456                 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1457
1458                 dmfprintk((MYIOC_s_INFO_FMT "FreeChainBuffers (index %d)\n",
1459                                 ioc->name, chain_idx));
1460
1461                 /* handle next */
1462                 chain_idx = next;
1463         }
1464         return;
1465 }
1466
1467 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1468 /*
1469  *      Reset Handling
1470  */
1471
1472 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1473 /*
1474  *      mptscsih_TMHandler - Generic handler for SCSI Task Management.
1475  *      Fall through to mpt_HardResetHandler if: not operational, too many
1476  *      failed TM requests or handshake failure.
1477  *
1478  *      @ioc: Pointer to MPT_ADAPTER structure
1479  *      @type: Task Management type
1480  *      @target: Logical Target ID for reset (if appropriate)
1481  *      @lun: Logical Unit for reset (if appropriate)
1482  *      @ctx2abort: Context for the task to be aborted (if appropriate)
1483  *
1484  *      Remark: Currently invoked from a non-interrupt thread (_bh).
1485  *
1486  *      Remark: With old EH code, at most 1 SCSI TaskMgmt function per IOC
1487  *      will be active.
1488  *
1489  *      Returns 0 for SUCCESS or -1 if FAILED.
1490  */
1491 int
1492 mptscsih_TMHandler(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 target, u8 lun, int ctx2abort, ulong timeout)
1493 {
1494         MPT_ADAPTER     *ioc;
1495         int              rc = -1;
1496         int              doTask = 1;
1497         u32              ioc_raw_state;
1498         unsigned long    flags;
1499
1500         /* If FW is being reloaded currently, return success to
1501          * the calling function.
1502          */
1503         if (hd == NULL)
1504                 return 0;
1505
1506         ioc = hd->ioc;
1507         if (ioc == NULL) {
1508                 printk(KERN_ERR MYNAM " TMHandler" " NULL ioc!\n");
1509                 return FAILED;
1510         }
1511         dtmprintk((MYIOC_s_INFO_FMT "TMHandler Entered!\n", ioc->name));
1512
1513         // SJR - CHECKME - Can we avoid this here?
1514         // (mpt_HardResetHandler has this check...)
1515         spin_lock_irqsave(&ioc->diagLock, flags);
1516         if ((ioc->diagPending) || (ioc->alt_ioc && ioc->alt_ioc->diagPending)) {
1517                 spin_unlock_irqrestore(&ioc->diagLock, flags);
1518                 return FAILED;
1519         }
1520         spin_unlock_irqrestore(&ioc->diagLock, flags);
1521
1522         /*  Wait a fixed amount of time for the TM pending flag to be cleared.
1523          *  If we time out and not bus reset, then we return a FAILED status to the caller.
1524          *  The call to mptscsih_tm_pending_wait() will set the pending flag if we are
1525          *  successful. Otherwise, reload the FW.
1526          */
1527         if (mptscsih_tm_pending_wait(hd) == FAILED) {
1528                 if (type == MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK) {
1529                         dtmprintk((KERN_INFO MYNAM ": %s: TMHandler abort: "
1530                            "Timed out waiting for last TM (%d) to complete! \n",
1531                            hd->ioc->name, hd->tmPending));
1532                         return FAILED;
1533                 } else if (type == MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET) {
1534                         dtmprintk((KERN_INFO MYNAM ": %s: TMHandler target reset: "
1535                            "Timed out waiting for last TM (%d) to complete! \n",
1536                            hd->ioc->name, hd->tmPending));
1537                         return FAILED;
1538                 } else if (type == MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS) {
1539                         dtmprintk((KERN_INFO MYNAM ": %s: TMHandler bus reset: "
1540                            "Timed out waiting for last TM (%d) to complete! \n",
1541                            hd->ioc->name, hd->tmPending));
1542                         if (hd->tmPending & (1 << MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS))
1543                                 return FAILED;
1544
1545                         doTask = 0;
1546                 }
1547         } else {
1548                 spin_lock_irqsave(&hd->ioc->FreeQlock, flags);
1549                 hd->tmPending |=  (1 << type);
1550                 spin_unlock_irqrestore(&hd->ioc->FreeQlock, flags);
1551         }
1552
1553         /* Is operational?
1554          */
1555         ioc_raw_state = mpt_GetIocState(hd->ioc, 0);
1556
1557 #ifdef MPT_DEBUG_RESET
1558         if ((ioc_raw_state & MPI_IOC_STATE_MASK) != MPI_IOC_STATE_OPERATIONAL) {
1559                 printk(MYIOC_s_WARN_FMT
1560                         "TM Handler: IOC Not operational(0x%x)!\n",
1561                         hd->ioc->name, ioc_raw_state);
1562         }
1563 #endif
1564
1565         if (doTask && ((ioc_raw_state & MPI_IOC_STATE_MASK) == MPI_IOC_STATE_OPERATIONAL)
1566                                 && !(ioc_raw_state & MPI_DOORBELL_ACTIVE)) {
1567
1568                 /* Isse the Task Mgmt request.
1569                  */
1570                 if (hd->hard_resets < -1)
1571                         hd->hard_resets++;
1572                 rc = mptscsih_IssueTaskMgmt(hd, type, channel, target, lun, ctx2abort, timeout);
1573                 if (rc) {
1574                         printk(MYIOC_s_INFO_FMT "Issue of TaskMgmt failed!\n", hd->ioc->name);
1575                 } else {
1576                         dtmprintk((MYIOC_s_INFO_FMT "Issue of TaskMgmt Successful!\n", hd->ioc->name));
1577                 }
1578         }
1579
1580         /* Only fall through to the HRH if this is a bus reset
1581          */
1582         if ((type == MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS) && (rc ||
1583                 ioc->reload_fw || (ioc->alt_ioc && ioc->alt_ioc->reload_fw))) {
1584                 dtmprintk((MYIOC_s_INFO_FMT "Calling HardReset! \n",
1585                          hd->ioc->name));
1586                 rc = mpt_HardResetHandler(hd->ioc, CAN_SLEEP);
1587         }
1588
1589         dtmprintk((MYIOC_s_INFO_FMT "TMHandler rc = %d!\n", hd->ioc->name, rc));
1590
1591         return rc;
1592 }
1593
1594
1595 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1596 /*
1597  *      mptscsih_IssueTaskMgmt - Generic send Task Management function.
1598  *      @hd: Pointer to MPT_SCSI_HOST structure
1599  *      @type: Task Management type
1600  *      @target: Logical Target ID for reset (if appropriate)
1601  *      @lun: Logical Unit for reset (if appropriate)
1602  *      @ctx2abort: Context for the task to be aborted (if appropriate)
1603  *
1604  *      Remark: _HardResetHandler can be invoked from an interrupt thread (timer)
1605  *      or a non-interrupt thread.  In the former, must not call schedule().
1606  *
1607  *      Not all fields are meaningfull for all task types.
1608  *
1609  *      Returns 0 for SUCCESS, -999 for "no msg frames",
1610  *      else other non-zero value returned.
1611  */
1612 static int
1613 mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 target, u8 lun, int ctx2abort, ulong timeout)
1614 {
1615         MPT_FRAME_HDR   *mf;
1616         SCSITaskMgmt_t  *pScsiTm;
1617         int              ii;
1618         int              retval;
1619
1620         /* Return Fail to calling function if no message frames available.
1621          */
1622         if ((mf = mpt_get_msg_frame(hd->ioc->TaskCtx, hd->ioc)) == NULL) {
1623                 dfailprintk((MYIOC_s_ERR_FMT "IssueTaskMgmt, no msg frames!!\n",
1624                                 hd->ioc->name));
1625                 return FAILED;
1626         }
1627         dtmprintk((MYIOC_s_INFO_FMT "IssueTaskMgmt request @ %p\n",
1628                         hd->ioc->name, mf));
1629
1630         /* Format the Request
1631          */
1632         pScsiTm = (SCSITaskMgmt_t *) mf;
1633         pScsiTm->TargetID = target;
1634         pScsiTm->Bus = channel;
1635         pScsiTm->ChainOffset = 0;
1636         pScsiTm->Function = MPI_FUNCTION_SCSI_TASK_MGMT;
1637
1638         pScsiTm->Reserved = 0;
1639         pScsiTm->TaskType = type;
1640         pScsiTm->Reserved1 = 0;
1641         pScsiTm->MsgFlags = (type == MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS)
1642                     ? MPI_SCSITASKMGMT_MSGFLAGS_LIPRESET_RESET_OPTION : 0;
1643
1644         for (ii= 0; ii < 8; ii++) {
1645                 pScsiTm->LUN[ii] = 0;
1646         }
1647         pScsiTm->LUN[1] = lun;
1648
1649         for (ii=0; ii < 7; ii++)
1650                 pScsiTm->Reserved2[ii] = 0;
1651
1652         pScsiTm->TaskMsgContext = ctx2abort;
1653
1654         dtmprintk((MYIOC_s_INFO_FMT "IssueTaskMgmt: ctx2abort (0x%08x) type=%d\n",
1655                         hd->ioc->name, ctx2abort, type));
1656
1657         DBG_DUMP_TM_REQUEST_FRAME((u32 *)pScsiTm);
1658
1659         if ((retval = mpt_send_handshake_request(hd->ioc->TaskCtx, hd->ioc,
1660                 sizeof(SCSITaskMgmt_t), (u32*)pScsiTm,
1661                 CAN_SLEEP)) != 0) {
1662                 dfailprintk((MYIOC_s_ERR_FMT "_send_handshake FAILED!"
1663                         " (hd %p, ioc %p, mf %p) \n", hd->ioc->name, hd,
1664                         hd->ioc, mf));
1665                 mpt_free_msg_frame(hd->ioc, mf);
1666                 return retval;
1667         }
1668
1669         if(mptscsih_tm_wait_for_completion(hd, timeout) == FAILED) {
1670                 dfailprintk((MYIOC_s_ERR_FMT "_wait_for_completion FAILED!"
1671                         " (hd %p, ioc %p, mf %p) \n", hd->ioc->name, hd,
1672                         hd->ioc, mf));
1673                 mpt_free_msg_frame(hd->ioc, mf);
1674                 dtmprintk((MYIOC_s_INFO_FMT "Calling HardReset! \n",
1675                          hd->ioc->name));
1676                 retval = mpt_HardResetHandler(hd->ioc, CAN_SLEEP);
1677         }
1678
1679         return retval;
1680 }
1681
1682 static int
1683 mptscsih_get_tm_timeout(MPT_ADAPTER *ioc)
1684 {
1685         switch (ioc->bus_type) {
1686         case FC:
1687                 return 40;
1688         case SAS:
1689                 return 10;
1690         case SPI:
1691         default:
1692                 return 2;
1693         }
1694 }
1695
1696 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1697 /**
1698  *      mptscsih_abort - Abort linux scsi_cmnd routine, new_eh variant
1699  *      @SCpnt: Pointer to scsi_cmnd structure, IO to be aborted
1700  *
1701  *      (linux scsi_host_template.eh_abort_handler routine)
1702  *
1703  *      Returns SUCCESS or FAILED.
1704  */
1705 int
1706 mptscsih_abort(struct scsi_cmnd * SCpnt)
1707 {
1708         MPT_SCSI_HOST   *hd;
1709         MPT_FRAME_HDR   *mf;
1710         u32              ctx2abort;
1711         int              scpnt_idx;
1712         int              retval;
1713         VirtDevice       *vdev;
1714
1715         /* If we can't locate our host adapter structure, return FAILED status.
1716          */
1717         if ((hd = (MPT_SCSI_HOST *) SCpnt->device->host->hostdata) == NULL) {
1718                 SCpnt->result = DID_RESET << 16;
1719                 SCpnt->scsi_done(SCpnt);
1720                 dfailprintk((KERN_INFO MYNAM ": mptscsih_abort: "
1721                            "Can't locate host! (sc=%p)\n",
1722                            SCpnt));
1723                 return FAILED;
1724         }
1725
1726         /* Find this command
1727          */
1728         if ((scpnt_idx = SCPNT_TO_LOOKUP_IDX(SCpnt)) < 0) {
1729                 /* Cmd not found in ScsiLookup.
1730                  * Do OS callback.
1731                  */
1732                 SCpnt->result = DID_RESET << 16;
1733                 dtmprintk((KERN_INFO MYNAM ": %s: mptscsih_abort: "
1734                            "Command not in the active list! (sc=%p)\n",
1735                            hd->ioc->name, SCpnt));
1736                 return SUCCESS;
1737         }
1738
1739         if (hd->resetPending) {
1740                 return FAILED;
1741         }
1742
1743         if (hd->timeouts < -1)
1744                 hd->timeouts++;
1745
1746         printk(KERN_WARNING MYNAM ": %s: attempting task abort! (sc=%p)\n",
1747                hd->ioc->name, SCpnt);
1748         scsi_print_command(SCpnt);
1749
1750         /* Most important!  Set TaskMsgContext to SCpnt's MsgContext!
1751          * (the IO to be ABORT'd)
1752          *
1753          * NOTE: Since we do not byteswap MsgContext, we do not
1754          *       swap it here either.  It is an opaque cookie to
1755          *       the controller, so it does not matter. -DaveM
1756          */
1757         mf = MPT_INDEX_2_MFPTR(hd->ioc, scpnt_idx);
1758         ctx2abort = mf->u.frame.hwhdr.msgctxu.MsgContext;
1759
1760         hd->abortSCpnt = SCpnt;
1761
1762         vdev = SCpnt->device->hostdata;
1763         retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
1764                 vdev->vtarget->bus_id, vdev->vtarget->target_id, vdev->lun,
1765                 ctx2abort, mptscsih_get_tm_timeout(hd->ioc));
1766
1767         printk (KERN_WARNING MYNAM ": %s: task abort: %s (sc=%p)\n",
1768                 hd->ioc->name,
1769                 ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1770
1771         if (retval == 0)
1772                 return SUCCESS;
1773
1774         if(retval != FAILED ) {
1775                 hd->tmPending = 0;
1776                 hd->tmState = TM_STATE_NONE;
1777         }
1778         return FAILED;
1779 }
1780
1781 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1782 /**
1783  *      mptscsih_dev_reset - Perform a SCSI TARGET_RESET!  new_eh variant
1784  *      @SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1785  *
1786  *      (linux scsi_host_template.eh_dev_reset_handler routine)
1787  *
1788  *      Returns SUCCESS or FAILED.
1789  */
1790 int
1791 mptscsih_dev_reset(struct scsi_cmnd * SCpnt)
1792 {
1793         MPT_SCSI_HOST   *hd;
1794         int              retval;
1795         VirtDevice       *vdev;
1796
1797         /* If we can't locate our host adapter structure, return FAILED status.
1798          */
1799         if ((hd = (MPT_SCSI_HOST *) SCpnt->device->host->hostdata) == NULL){
1800                 dtmprintk((KERN_INFO MYNAM ": mptscsih_dev_reset: "
1801                            "Can't locate host! (sc=%p)\n",
1802                            SCpnt));
1803                 return FAILED;
1804         }
1805
1806         if (hd->resetPending)
1807                 return FAILED;
1808
1809         printk(KERN_WARNING MYNAM ": %s: attempting target reset! (sc=%p)\n",
1810                hd->ioc->name, SCpnt);
1811         scsi_print_command(SCpnt);
1812
1813         vdev = SCpnt->device->hostdata;
1814         retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
1815                 vdev->vtarget->bus_id, vdev->vtarget->target_id,
1816                 0, 0, mptscsih_get_tm_timeout(hd->ioc));
1817
1818         printk (KERN_WARNING MYNAM ": %s: target reset: %s (sc=%p)\n",
1819                 hd->ioc->name,
1820                 ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1821
1822         if (retval == 0)
1823                 return SUCCESS;
1824
1825         if(retval != FAILED ) {
1826                 hd->tmPending = 0;
1827                 hd->tmState = TM_STATE_NONE;
1828         }
1829         return FAILED;
1830 }
1831
1832 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1833 /**
1834  *      mptscsih_bus_reset - Perform a SCSI BUS_RESET!  new_eh variant
1835  *      @SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1836  *
1837  *      (linux scsi_host_template.eh_bus_reset_handler routine)
1838  *
1839  *      Returns SUCCESS or FAILED.
1840  */
1841 int
1842 mptscsih_bus_reset(struct scsi_cmnd * SCpnt)
1843 {
1844         MPT_SCSI_HOST   *hd;
1845         int              retval;
1846         VirtDevice       *vdev;
1847
1848         /* If we can't locate our host adapter structure, return FAILED status.
1849          */
1850         if ((hd = (MPT_SCSI_HOST *) SCpnt->device->host->hostdata) == NULL){
1851                 dtmprintk((KERN_INFO MYNAM ": mptscsih_bus_reset: "
1852                            "Can't locate host! (sc=%p)\n",
1853                            SCpnt ) );
1854                 return FAILED;
1855         }
1856
1857         printk(KERN_WARNING MYNAM ": %s: attempting bus reset! (sc=%p)\n",
1858                hd->ioc->name, SCpnt);
1859         scsi_print_command(SCpnt);
1860
1861         if (hd->timeouts < -1)
1862                 hd->timeouts++;
1863
1864         vdev = SCpnt->device->hostdata;
1865         retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
1866                 vdev->vtarget->bus_id, 0, 0, 0, mptscsih_get_tm_timeout(hd->ioc));
1867
1868         printk (KERN_WARNING MYNAM ": %s: bus reset: %s (sc=%p)\n",
1869                 hd->ioc->name,
1870                 ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1871
1872         if (retval == 0)
1873                 return SUCCESS;
1874
1875         if(retval != FAILED ) {
1876                 hd->tmPending = 0;
1877                 hd->tmState = TM_STATE_NONE;
1878         }
1879         return FAILED;
1880 }
1881
1882 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1883 /**
1884  *      mptscsih_host_reset - Perform a SCSI host adapter RESET!
1885  *      new_eh variant
1886  *      @SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1887  *
1888  *      (linux scsi_host_template.eh_host_reset_handler routine)
1889  *
1890  *      Returns SUCCESS or FAILED.
1891  */
1892 int
1893 mptscsih_host_reset(struct scsi_cmnd *SCpnt)
1894 {
1895         MPT_SCSI_HOST *  hd;
1896         int              status = SUCCESS;
1897
1898         /*  If we can't locate the host to reset, then we failed. */
1899         if ((hd = (MPT_SCSI_HOST *) SCpnt->device->host->hostdata) == NULL){
1900                 dtmprintk( ( KERN_INFO MYNAM ": mptscsih_host_reset: "
1901                              "Can't locate host! (sc=%p)\n",
1902                              SCpnt ) );
1903                 return FAILED;
1904         }
1905
1906         printk(KERN_WARNING MYNAM ": %s: Attempting host reset! (sc=%p)\n",
1907                hd->ioc->name, SCpnt);
1908
1909         /*  If our attempts to reset the host failed, then return a failed
1910          *  status.  The host will be taken off line by the SCSI mid-layer.
1911          */
1912         if (mpt_HardResetHandler(hd->ioc, CAN_SLEEP) < 0){
1913                 status = FAILED;
1914         } else {
1915                 /*  Make sure TM pending is cleared and TM state is set to
1916                  *  NONE.
1917                  */
1918                 hd->tmPending = 0;
1919                 hd->tmState = TM_STATE_NONE;
1920         }
1921
1922         dtmprintk( ( KERN_INFO MYNAM ": mptscsih_host_reset: "
1923                      "Status = %s\n",
1924                      (status == SUCCESS) ? "SUCCESS" : "FAILED" ) );
1925
1926         return status;
1927 }
1928
1929 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1930 /**
1931  *      mptscsih_tm_pending_wait - wait for pending task management request to
1932  *              complete.
1933  *      @hd: Pointer to MPT host structure.
1934  *
1935  *      Returns {SUCCESS,FAILED}.
1936  */
1937 static int
1938 mptscsih_tm_pending_wait(MPT_SCSI_HOST * hd)
1939 {
1940         unsigned long  flags;
1941         int            loop_count = 4 * 10;  /* Wait 10 seconds */
1942         int            status = FAILED;
1943
1944         do {
1945                 spin_lock_irqsave(&hd->ioc->FreeQlock, flags);
1946                 if (hd->tmState == TM_STATE_NONE) {
1947                         hd->tmState = TM_STATE_IN_PROGRESS;
1948                         hd->tmPending = 1;
1949                         spin_unlock_irqrestore(&hd->ioc->FreeQlock, flags);
1950                         status = SUCCESS;
1951                         break;
1952                 }
1953                 spin_unlock_irqrestore(&hd->ioc->FreeQlock, flags);
1954                 msleep(250);
1955         } while (--loop_count);
1956
1957         return status;
1958 }
1959
1960 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1961 /**
1962  *      mptscsih_tm_wait_for_completion - wait for completion of TM task
1963  *      @hd: Pointer to MPT host structure.
1964  *
1965  *      Returns {SUCCESS,FAILED}.
1966  */
1967 static int
1968 mptscsih_tm_wait_for_completion(MPT_SCSI_HOST * hd, ulong timeout )
1969 {
1970         unsigned long  flags;
1971         int            loop_count = 4 * timeout;
1972         int            status = FAILED;
1973
1974         do {
1975                 spin_lock_irqsave(&hd->ioc->FreeQlock, flags);
1976                 if(hd->tmPending == 0) {
1977                         status = SUCCESS;
1978                         spin_unlock_irqrestore(&hd->ioc->FreeQlock, flags);
1979                         break;
1980                 }
1981                 spin_unlock_irqrestore(&hd->ioc->FreeQlock, flags);
1982                 msleep(250);
1983         } while (--loop_count);
1984
1985         return status;
1986 }
1987
1988 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1989 static void
1990 mptscsih_taskmgmt_response_code(MPT_ADAPTER *ioc, u8 response_code)
1991 {
1992         char *desc;
1993
1994         switch (response_code) {
1995         case MPI_SCSITASKMGMT_RSP_TM_COMPLETE:
1996                 desc = "The task completed.";
1997                 break;
1998         case MPI_SCSITASKMGMT_RSP_INVALID_FRAME:
1999                 desc = "The IOC received an invalid frame status.";
2000                 break;
2001         case MPI_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2002                 desc = "The task type is not supported.";
2003                 break;
2004         case MPI_SCSITASKMGMT_RSP_TM_FAILED:
2005                 desc = "The requested task failed.";
2006                 break;
2007         case MPI_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2008                 desc = "The task completed successfully.";
2009                 break;
2010         case MPI_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2011                 desc = "The LUN request is invalid.";
2012                 break;
2013         case MPI_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2014                 desc = "The task is in the IOC queue and has not been sent to target.";
2015                 break;
2016         default:
2017                 desc = "unknown";
2018                 break;
2019         }
2020         printk(MYIOC_s_INFO_FMT "Response Code(0x%08x): F/W: %s\n",
2021                 ioc->name, response_code, desc);
2022 }
2023
2024 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2025 /**
2026  *      mptscsih_taskmgmt_complete - Registered with Fusion MPT base driver
2027  *      @ioc: Pointer to MPT_ADAPTER structure
2028  *      @mf: Pointer to SCSI task mgmt request frame
2029  *      @mr: Pointer to SCSI task mgmt reply frame
2030  *
2031  *      This routine is called from mptbase.c::mpt_interrupt() at the completion
2032  *      of any SCSI task management request.
2033  *      This routine is registered with the MPT (base) driver at driver
2034  *      load/init time via the mpt_register() API call.
2035  *
2036  *      Returns 1 indicating alloc'd request frame ptr should be freed.
2037  */
2038 int
2039 mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
2040 {
2041         SCSITaskMgmtReply_t     *pScsiTmReply;
2042         SCSITaskMgmt_t          *pScsiTmReq;
2043         MPT_SCSI_HOST           *hd;
2044         unsigned long            flags;
2045         u16                      iocstatus;
2046         u8                       tmType;
2047
2048         dtmprintk((MYIOC_s_WARN_FMT "TaskMgmt completed (mf=%p,mr=%p)\n",
2049                         ioc->name, mf, mr));
2050         if (ioc->sh) {
2051                 /* Depending on the thread, a timer is activated for
2052                  * the TM request.  Delete this timer on completion of TM.
2053                  * Decrement count of outstanding TM requests.
2054                  */
2055                 hd = (MPT_SCSI_HOST *)ioc->sh->hostdata;
2056         } else {
2057                 dtmprintk((MYIOC_s_WARN_FMT "TaskMgmt Complete: NULL Scsi Host Ptr\n",
2058                         ioc->name));
2059                 return 1;
2060         }
2061
2062         if (mr == NULL) {
2063                 dtmprintk((MYIOC_s_WARN_FMT "ERROR! TaskMgmt Reply: NULL Request %p\n",
2064                         ioc->name, mf));
2065                 return 1;
2066         } else {
2067                 pScsiTmReply = (SCSITaskMgmtReply_t*)mr;
2068                 pScsiTmReq = (SCSITaskMgmt_t*)mf;
2069
2070                 /* Figure out if this was ABORT_TASK, TARGET_RESET, or BUS_RESET! */
2071                 tmType = pScsiTmReq->TaskType;
2072
2073                 if (ioc->facts.MsgVersion >= MPI_VERSION_01_05 &&
2074                     pScsiTmReply->ResponseCode)
2075                         mptscsih_taskmgmt_response_code(ioc,
2076                             pScsiTmReply->ResponseCode);
2077
2078                 dtmprintk((MYIOC_s_WARN_FMT "  TaskType = %d, TerminationCount=%d\n",
2079                                 ioc->name, tmType, le32_to_cpu(pScsiTmReply->TerminationCount)));
2080                 DBG_DUMP_TM_REPLY_FRAME((u32 *)pScsiTmReply);
2081
2082                 iocstatus = le16_to_cpu(pScsiTmReply->IOCStatus) & MPI_IOCSTATUS_MASK;
2083                 dtmprintk((MYIOC_s_WARN_FMT "  SCSI TaskMgmt (%d) IOCStatus=%04x IOCLogInfo=%08x\n",
2084                         ioc->name, tmType, iocstatus, le32_to_cpu(pScsiTmReply->IOCLogInfo)));
2085                 /* Error?  (anything non-zero?) */
2086                 if (iocstatus) {
2087
2088                         /* clear flags and continue.
2089                          */
2090                         if (tmType == MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
2091                                 hd->abortSCpnt = NULL;
2092
2093                         /* If an internal command is present
2094                          * or the TM failed - reload the FW.
2095                          * FC FW may respond FAILED to an ABORT
2096                          */
2097                         if (tmType == MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS) {
2098                                 if ((hd->cmdPtr) ||
2099                                     (iocstatus == MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED)) {
2100                                         if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0) {
2101                                                 printk((KERN_WARNING
2102                                                         " Firmware Reload FAILED!!\n"));
2103                                         }
2104                                 }
2105                         }
2106                 } else {
2107                         dtmprintk((MYIOC_s_WARN_FMT " TaskMgmt SUCCESS\n", ioc->name));
2108
2109                         hd->abortSCpnt = NULL;
2110
2111                 }
2112         }
2113
2114         spin_lock_irqsave(&ioc->FreeQlock, flags);
2115         hd->tmPending = 0;
2116         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2117         hd->tmState = TM_STATE_NONE;
2118
2119         return 1;
2120 }
2121
2122 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2123 /*
2124  *      This is anyones guess quite frankly.
2125  */
2126 int
2127 mptscsih_bios_param(struct scsi_device * sdev, struct block_device *bdev,
2128                 sector_t capacity, int geom[])
2129 {
2130         int             heads;
2131         int             sectors;
2132         sector_t        cylinders;
2133         ulong           dummy;
2134
2135         heads = 64;
2136         sectors = 32;
2137
2138         dummy = heads * sectors;
2139         cylinders = capacity;
2140         sector_div(cylinders,dummy);
2141
2142         /*
2143          * Handle extended translation size for logical drives
2144          * > 1Gb
2145          */
2146         if ((ulong)capacity >= 0x200000) {
2147                 heads = 255;
2148                 sectors = 63;
2149                 dummy = heads * sectors;
2150                 cylinders = capacity;
2151                 sector_div(cylinders,dummy);
2152         }
2153
2154         /* return result */
2155         geom[0] = heads;
2156         geom[1] = sectors;
2157         geom[2] = cylinders;
2158
2159         dprintk((KERN_NOTICE
2160                 ": bios_param: Id=%i Lun=%i Channel=%i CHS=%i/%i/%i\n",
2161                 sdev->id, sdev->lun,sdev->channel,(int)cylinders,heads,sectors));
2162
2163         return 0;
2164 }
2165
2166 /* Search IOC page 3 to determine if this is hidden physical disk
2167  *
2168  */
2169 int
2170 mptscsih_is_phys_disk(MPT_ADAPTER *ioc, int id)
2171 {
2172         int i;
2173
2174         if (!ioc->raid_data.isRaid || !ioc->raid_data.pIocPg3)
2175                 return 0;
2176         for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
2177                 if (id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID)
2178                         return 1;
2179         }
2180         return 0;
2181 }
2182 EXPORT_SYMBOL(mptscsih_is_phys_disk);
2183
2184 int
2185 mptscsih_raid_id_to_num(MPT_SCSI_HOST *hd, uint physdiskid)
2186 {
2187         int i;
2188
2189         if (!hd->ioc->raid_data.isRaid || !hd->ioc->raid_data.pIocPg3)
2190                 return -ENXIO;
2191
2192         for (i = 0; i < hd->ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
2193                 if (physdiskid ==
2194                     hd->ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID)
2195                         return hd->ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum;
2196         }
2197
2198         return -ENXIO;
2199 }
2200 EXPORT_SYMBOL(mptscsih_raid_id_to_num);
2201
2202 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2203 /*
2204  *      OS entry point to allow host driver to alloc memory
2205  *      for each scsi target. Called once per device the bus scan.
2206  *      Return non-zero if allocation fails.
2207  */
2208 int
2209 mptscsih_target_alloc(struct scsi_target *starget)
2210 {
2211         VirtTarget              *vtarget;
2212
2213         vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
2214         if (!vtarget)
2215                 return -ENOMEM;
2216         starget->hostdata = vtarget;
2217         vtarget->starget = starget;
2218         return 0;
2219 }
2220
2221 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2222 /*
2223  *      OS entry point to allow host driver to alloc memory
2224  *      for each scsi device. Called once per device the bus scan.
2225  *      Return non-zero if allocation fails.
2226  */
2227 int
2228 mptscsih_slave_alloc(struct scsi_device *sdev)
2229 {
2230         struct Scsi_Host        *host = sdev->host;
2231         MPT_SCSI_HOST           *hd = (MPT_SCSI_HOST *)host->hostdata;
2232         VirtTarget              *vtarget;
2233         VirtDevice              *vdev;
2234         struct scsi_target      *starget;
2235
2236         vdev = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
2237         if (!vdev) {
2238                 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
2239                                 hd->ioc->name, sizeof(VirtDevice));
2240                 return -ENOMEM;
2241         }
2242
2243         vdev->lun = sdev->lun;
2244         sdev->hostdata = vdev;
2245
2246         starget = scsi_target(sdev);
2247         vtarget = starget->hostdata;
2248
2249         vdev->vtarget = vtarget;
2250
2251         if (vtarget->num_luns == 0) {
2252                 hd->Targets[sdev->id] = vtarget;
2253                 vtarget->ioc_id = hd->ioc->id;
2254                 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
2255                 vtarget->target_id = sdev->id;
2256                 vtarget->bus_id = sdev->channel;
2257                 if (hd->ioc->bus_type == SPI && sdev->channel == 0 &&
2258                     hd->ioc->raid_data.isRaid & (1 << sdev->id)) {
2259                         vtarget->raidVolume = 1;
2260                         ddvtprintk((KERN_INFO
2261                                     "RAID Volume @ id %d\n", sdev->id));
2262                 }
2263         }
2264         vtarget->num_luns++;
2265         return 0;
2266 }
2267
2268 /*
2269  *      OS entry point to allow for host driver to free allocated memory
2270  *      Called if no device present or device being unloaded
2271  */
2272 void
2273 mptscsih_target_destroy(struct scsi_target *starget)
2274 {
2275         if (starget->hostdata)
2276                 kfree(starget->hostdata);
2277         starget->hostdata = NULL;
2278 }
2279
2280 /*
2281  *      OS entry point to allow for host driver to free allocated memory
2282  *      Called if no device present or device being unloaded
2283  */
2284 void
2285 mptscsih_slave_destroy(struct scsi_device *sdev)
2286 {
2287         struct Scsi_Host        *host = sdev->host;
2288         MPT_SCSI_HOST           *hd = (MPT_SCSI_HOST *)host->hostdata;
2289         VirtTarget              *vtarget;
2290         VirtDevice              *vdevice;
2291         struct scsi_target      *starget;
2292
2293         starget = scsi_target(sdev);
2294         vtarget = starget->hostdata;
2295         vdevice = sdev->hostdata;
2296
2297         mptscsih_search_running_cmds(hd, vdevice);
2298         vtarget->luns[0] &= ~(1 << vdevice->lun);
2299         vtarget->num_luns--;
2300         if (vtarget->num_luns == 0) {
2301                 hd->Targets[sdev->id] = NULL;
2302         }
2303         mptscsih_synchronize_cache(hd, vdevice);
2304         kfree(vdevice);
2305         sdev->hostdata = NULL;
2306 }
2307
2308 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2309 /*
2310  *      mptscsih_change_queue_depth - This function will set a devices queue depth
2311  *      @sdev: per scsi_device pointer
2312  *      @qdepth: requested queue depth
2313  *
2314  *      Adding support for new 'change_queue_depth' api.
2315 */
2316 int
2317 mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
2318 {
2319         MPT_SCSI_HOST           *hd = (MPT_SCSI_HOST *)sdev->host->hostdata;
2320         VirtTarget              *vtarget;
2321         struct scsi_target      *starget;
2322         int                     max_depth;
2323         int                     tagged;
2324
2325         starget = scsi_target(sdev);
2326         vtarget = starget->hostdata;
2327
2328         if (hd->ioc->bus_type == SPI) {
2329                 if (!(vtarget->tflags & MPT_TARGET_FLAGS_Q_YES))
2330                         max_depth = 1;
2331                 else if (sdev->type == TYPE_DISK &&
2332                          vtarget->minSyncFactor <= MPT_ULTRA160)
2333                         max_depth = MPT_SCSI_CMD_PER_DEV_HIGH;
2334                 else
2335                         max_depth = MPT_SCSI_CMD_PER_DEV_LOW;
2336         } else
2337                 max_depth = MPT_SCSI_CMD_PER_DEV_HIGH;
2338
2339         if (qdepth > max_depth)
2340                 qdepth = max_depth;
2341         if (qdepth == 1)
2342                 tagged = 0;
2343         else
2344                 tagged = MSG_SIMPLE_TAG;
2345
2346         scsi_adjust_queue_depth(sdev, tagged, qdepth);
2347         return sdev->queue_depth;
2348 }
2349
2350 /*
2351  *      OS entry point to adjust the queue_depths on a per-device basis.
2352  *      Called once per device the bus scan. Use it to force the queue_depth
2353  *      member to 1 if a device does not support Q tags.
2354  *      Return non-zero if fails.
2355  */
2356 int
2357 mptscsih_slave_configure(struct scsi_device *sdev)
2358 {
2359         struct Scsi_Host        *sh = sdev->host;
2360         VirtTarget              *vtarget;
2361         VirtDevice              *vdevice;
2362         struct scsi_target      *starget;
2363         MPT_SCSI_HOST           *hd = (MPT_SCSI_HOST *)sh->hostdata;
2364         int                     indexed_lun, lun_index;
2365
2366         starget = scsi_target(sdev);
2367         vtarget = starget->hostdata;
2368         vdevice = sdev->hostdata;
2369
2370         dsprintk((MYIOC_s_INFO_FMT
2371                 "device @ %p, id=%d, LUN=%d, channel=%d\n",
2372                 hd->ioc->name, sdev, sdev->id, sdev->lun, sdev->channel));
2373         if (hd->ioc->bus_type == SPI)
2374                 dsprintk((MYIOC_s_INFO_FMT
2375                     "sdtr %d wdtr %d ppr %d inq length=%d\n",
2376                     hd->ioc->name, sdev->sdtr, sdev->wdtr,
2377                     sdev->ppr, sdev->inquiry_len));
2378
2379         if (sdev->id > sh->max_id) {
2380                 /* error case, should never happen */
2381                 scsi_adjust_queue_depth(sdev, 0, 1);
2382                 goto slave_configure_exit;
2383         }
2384
2385         vdevice->configured_lun=1;
2386         lun_index = (vdevice->lun >> 5);  /* 32 luns per lun_index */
2387         indexed_lun = (vdevice->lun % 32);
2388         vtarget->luns[lun_index] |= (1 << indexed_lun);
2389         mptscsih_initTarget(hd, vtarget, sdev);
2390         mptscsih_change_queue_depth(sdev, MPT_SCSI_CMD_PER_DEV_HIGH);
2391
2392         dsprintk((MYIOC_s_INFO_FMT
2393                 "Queue depth=%d, tflags=%x\n",
2394                 hd->ioc->name, sdev->queue_depth, vtarget->tflags));
2395
2396         if (hd->ioc->bus_type == SPI)
2397                 dsprintk((MYIOC_s_INFO_FMT
2398                     "negoFlags=%x, maxOffset=%x, SyncFactor=%x\n",
2399                     hd->ioc->name, vtarget->negoFlags, vtarget->maxOffset,
2400                     vtarget->minSyncFactor));
2401
2402 slave_configure_exit:
2403
2404         dsprintk((MYIOC_s_INFO_FMT
2405                 "tagged %d, simple %d, ordered %d\n",
2406                 hd->ioc->name,sdev->tagged_supported, sdev->simple_tags,
2407                 sdev->ordered_tags));
2408
2409         return 0;
2410 }
2411
2412 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2413 /*
2414  *  Private routines...
2415  */
2416
2417 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2418 /* Utility function to copy sense data from the scsi_cmnd buffer
2419  * to the FC and SCSI target structures.
2420  *
2421  */
2422 static void
2423 mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR *mf, SCSIIOReply_t *pScsiReply)
2424 {
2425         VirtDevice      *vdev;
2426         SCSIIORequest_t *pReq;
2427         u32              sense_count = le32_to_cpu(pScsiReply->SenseCount);
2428
2429         /* Get target structure
2430          */
2431         pReq = (SCSIIORequest_t *) mf;
2432         vdev = sc->device->hostdata;
2433
2434         if (sense_count) {
2435                 u8 *sense_data;
2436                 int req_index;
2437
2438                 /* Copy the sense received into the scsi command block. */
2439                 req_index = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
2440                 sense_data = ((u8 *)hd->ioc->sense_buf_pool + (req_index * MPT_SENSE_BUFFER_ALLOC));
2441                 memcpy(sc->sense_buffer, sense_data, SNS_LEN(sc));
2442
2443                 /* Log SMART data (asc = 0x5D, non-IM case only) if required.
2444                  */
2445                 if ((hd->ioc->events) && (hd->ioc->eventTypes & (1 << MPI_EVENT_SCSI_DEVICE_STATUS_CHANGE))) {
2446                         if ((sense_data[12] == 0x5D) && (vdev->vtarget->raidVolume == 0)) {
2447                                 int idx;
2448                                 MPT_ADAPTER *ioc = hd->ioc;
2449
2450                                 idx = ioc->eventContext % MPTCTL_EVENT_LOG_SIZE;
2451                                 ioc->events[idx].event = MPI_EVENT_SCSI_DEVICE_STATUS_CHANGE;
2452                                 ioc->events[idx].eventContext = ioc->eventContext;
2453
2454                                 ioc->events[idx].data[0] = (pReq->LUN[1] << 24) ||
2455                                         (MPI_EVENT_SCSI_DEV_STAT_RC_SMART_DATA << 16) ||
2456                                         (sc->device->channel << 8) || sc->device->id;
2457
2458                                 ioc->events[idx].data[1] = (sense_data[13] << 8) || sense_data[12];
2459
2460                                 ioc->eventContext++;
2461                                 if (hd->ioc->pcidev->vendor ==
2462                                     PCI_VENDOR_ID_IBM) {
2463                                         mptscsih_issue_sep_command(hd->ioc,
2464                                             vdev->vtarget, MPI_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
2465                                         vdev->vtarget->tflags |=
2466                                             MPT_TARGET_FLAGS_LED_ON;
2467                                 }
2468                         }
2469                 }
2470         } else {
2471                 dprintk((MYIOC_s_INFO_FMT "Hmmm... SenseData len=0! (?)\n",
2472                                 hd->ioc->name));
2473         }
2474 }
2475
2476 static u32
2477 SCPNT_TO_LOOKUP_IDX(struct scsi_cmnd *sc)
2478 {
2479         MPT_SCSI_HOST *hd;
2480         int i;
2481
2482         hd = (MPT_SCSI_HOST *) sc->device->host->hostdata;
2483
2484         for (i = 0; i < hd->ioc->req_depth; i++) {
2485                 if (hd->ScsiLookup[i] == sc) {
2486                         return i;
2487                 }
2488         }
2489
2490         return -1;
2491 }
2492
2493 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2494 int
2495 mptscsih_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
2496 {
2497         MPT_SCSI_HOST   *hd;
2498         unsigned long    flags;
2499         int             ii;
2500
2501         dtmprintk((KERN_WARNING MYNAM
2502                         ": IOC %s_reset routed to SCSI host driver!\n",
2503                         reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
2504                         reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
2505
2506         /* If a FW reload request arrives after base installed but
2507          * before all scsi hosts have been attached, then an alt_ioc
2508          * may have a NULL sh pointer.
2509          */
2510         if ((ioc->sh == NULL) || (ioc->sh->hostdata == NULL))
2511                 return 0;
2512         else
2513                 hd = (MPT_SCSI_HOST *) ioc->sh->hostdata;
2514
2515         if (reset_phase == MPT_IOC_SETUP_RESET) {
2516                 dtmprintk((MYIOC_s_WARN_FMT "Setup-Diag Reset\n", ioc->name));
2517
2518                 /* Clean Up:
2519                  * 1. Set Hard Reset Pending Flag
2520                  * All new commands go to doneQ
2521                  */
2522                 hd->resetPending = 1;
2523
2524         } else if (reset_phase == MPT_IOC_PRE_RESET) {
2525                 dtmprintk((MYIOC_s_WARN_FMT "Pre-Diag Reset\n", ioc->name));
2526
2527                 /* 2. Flush running commands
2528                  *      Clean ScsiLookup (and associated memory)
2529                  *      AND clean mytaskQ
2530                  */
2531
2532                 /* 2b. Reply to OS all known outstanding I/O commands.
2533                  */
2534                 mptscsih_flush_running_cmds(hd);
2535
2536                 /* 2c. If there was an internal command that
2537                  * has not completed, configuration or io request,
2538                  * free these resources.
2539                  */
2540                 if (hd->cmdPtr) {
2541                         del_timer(&hd->timer);
2542                         mpt_free_msg_frame(ioc, hd->cmdPtr);
2543                 }
2544
2545                 dtmprintk((MYIOC_s_WARN_FMT "Pre-Reset complete.\n", ioc->name));
2546
2547         } else {
2548                 dtmprintk((MYIOC_s_WARN_FMT "Post-Diag Reset\n", ioc->name));
2549
2550                 /* Once a FW reload begins, all new OS commands are
2551                  * redirected to the doneQ w/ a reset status.
2552                  * Init all control structures.
2553                  */
2554
2555                 /* ScsiLookup initialization
2556                  */
2557                 for (ii=0; ii < hd->ioc->req_depth; ii++)
2558                         hd->ScsiLookup[ii] = NULL;
2559
2560                 /* 2. Chain Buffer initialization
2561                  */
2562
2563                 /* 4. Renegotiate to all devices, if SPI
2564                  */
2565
2566                 /* 5. Enable new commands to be posted
2567                  */
2568                 spin_lock_irqsave(&ioc->FreeQlock, flags);
2569                 hd->tmPending = 0;
2570                 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2571                 hd->resetPending = 0;
2572                 hd->tmState = TM_STATE_NONE;
2573
2574                 /* 6. If there was an internal command,
2575                  * wake this process up.
2576                  */
2577                 if (hd->cmdPtr) {
2578                         /*
2579                          * Wake up the original calling thread
2580                          */
2581                         hd->pLocal = &hd->localReply;
2582                         hd->pLocal->completion = MPT_SCANDV_DID_RESET;
2583                         hd->scandv_wait_done = 1;
2584                         wake_up(&hd->scandv_waitq);
2585                         hd->cmdPtr = NULL;
2586                 }
2587
2588                 dtmprintk((MYIOC_s_WARN_FMT "Post-Reset complete.\n", ioc->name));
2589
2590         }
2591
2592         return 1;               /* currently means nothing really */
2593 }
2594
2595 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2596 int
2597 mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
2598 {
2599         MPT_SCSI_HOST *hd;
2600         u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
2601
2602         devtverboseprintk((MYIOC_s_INFO_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
2603                         ioc->name, event));
2604
2605         if (ioc->sh == NULL ||
2606                 ((hd = (MPT_SCSI_HOST *)ioc->sh->hostdata) == NULL))
2607                 return 1;
2608
2609         switch (event) {
2610         case MPI_EVENT_UNIT_ATTENTION:                  /* 03 */
2611                 /* FIXME! */
2612                 break;
2613         case MPI_EVENT_IOC_BUS_RESET:                   /* 04 */
2614         case MPI_EVENT_EXT_BUS_RESET:                   /* 05 */
2615                 if (hd && (ioc->bus_type == SPI) && (hd->soft_resets < -1))
2616                         hd->soft_resets++;
2617                 break;
2618         case MPI_EVENT_LOGOUT:                          /* 09 */
2619                 /* FIXME! */
2620                 break;
2621
2622         case MPI_EVENT_RESCAN:                          /* 06 */
2623                 break;
2624
2625                 /*
2626                  *  CHECKME! Don't think we need to do
2627                  *  anything for these, but...
2628                  */
2629         case MPI_EVENT_LINK_STATUS_CHANGE:              /* 07 */
2630         case MPI_EVENT_LOOP_STATE_CHANGE:               /* 08 */
2631                 /*
2632                  *  CHECKME!  Falling thru...
2633                  */
2634                 break;
2635
2636         case MPI_EVENT_INTEGRATED_RAID:                 /* 0B */
2637                 break;
2638
2639         case MPI_EVENT_NONE:                            /* 00 */
2640         case MPI_EVENT_LOG_DATA:                        /* 01 */
2641         case MPI_EVENT_STATE_CHANGE:                    /* 02 */
2642         case MPI_EVENT_EVENT_CHANGE:                    /* 0A */
2643         default:
2644                 dprintk((KERN_INFO "  Ignoring event (=%02Xh)\n", event));
2645                 break;
2646         }
2647
2648         return 1;               /* currently means nothing really */
2649 }
2650
2651 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2652 /*
2653  *      mptscsih_initTarget - Target, LUN alloc/free functionality.
2654  *      @hd: Pointer to MPT_SCSI_HOST structure
2655  *      @vtarget: per target private data
2656  *      @sdev: SCSI device
2657  *
2658  *      NOTE: It's only SAFE to call this routine if data points to
2659  *      sane & valid STANDARD INQUIRY data!
2660  *
2661  *      Allocate and initialize memory for this target.
2662  *      Save inquiry data.
2663  *
2664  */
2665 static void
2666 mptscsih_initTarget(MPT_SCSI_HOST *hd, VirtTarget *vtarget,
2667                     struct scsi_device *sdev)
2668 {
2669         dinitprintk((MYIOC_s_INFO_FMT "initTarget bus=%d id=%d lun=%d hd=%p\n",
2670                 hd->ioc->name, vtarget->bus_id, vtarget->target_id, lun, hd));
2671
2672         /* Is LUN supported? If so, upper 2 bits will be 0
2673         * in first byte of inquiry data.
2674         */
2675         if (sdev->inq_periph_qual != 0)
2676                 return;
2677
2678         if (vtarget == NULL)
2679                 return;
2680
2681         vtarget->type = sdev->type;
2682
2683         if (hd->ioc->bus_type != SPI)
2684                 return;
2685
2686         if ((sdev->type == TYPE_PROCESSOR) && (hd->ioc->spi_data.Saf_Te)) {
2687                 /* Treat all Processors as SAF-TE if
2688                  * command line option is set */
2689                 vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
2690                 mptscsih_writeIOCPage4(hd, vtarget->target_id, vtarget->bus_id);
2691         }else if ((sdev->type == TYPE_PROCESSOR) &&
2692                 !(vtarget->tflags & MPT_TARGET_FLAGS_SAF_TE_ISSUED )) {
2693                 if (sdev->inquiry_len > 49 ) {
2694                         if (sdev->inquiry[44] == 'S' &&
2695                             sdev->inquiry[45] == 'A' &&
2696                             sdev->inquiry[46] == 'F' &&
2697                             sdev->inquiry[47] == '-' &&
2698                             sdev->inquiry[48] == 'T' &&
2699                             sdev->inquiry[49] == 'E' ) {
2700                                 vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
2701                                 mptscsih_writeIOCPage4(hd, vtarget->target_id, vtarget->bus_id);
2702                         }
2703                 }
2704         }
2705         mptscsih_setTargetNegoParms(hd, vtarget, sdev);
2706 }
2707
2708 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2709 /*
2710  *  Update the target negotiation parameters based on the
2711  *  the Inquiry data, adapter capabilities, and NVRAM settings.
2712  *
2713  */
2714 static void
2715 mptscsih_setTargetNegoParms(MPT_SCSI_HOST *hd, VirtTarget *target,
2716                             struct scsi_device *sdev)
2717 {
2718         SpiCfgData *pspi_data = &hd->ioc->spi_data;
2719         int  id = (int) target->target_id;
2720         int  nvram;
2721         u8 width = MPT_NARROW;
2722         u8 factor = MPT_ASYNC;
2723         u8 offset = 0;
2724         u8 nfactor;
2725         u8 noQas = 1;
2726
2727         target->negoFlags = pspi_data->noQas;
2728
2729         /* noQas == 0 => device supports QAS. */
2730
2731         if (sdev->scsi_level < SCSI_2) {
2732                 width = 0;
2733                 factor = MPT_ULTRA2;
2734                 offset = pspi_data->maxSyncOffset;
2735                 target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
2736         } else {
2737                 if (scsi_device_wide(sdev)) {
2738                         width = 1;
2739                 }
2740
2741                 if (scsi_device_sync(sdev)) {
2742                         factor = pspi_data->minSyncFactor;
2743                         if (!scsi_device_dt(sdev))
2744                                         factor = MPT_ULTRA2;
2745                         else {
2746                                 if (!scsi_device_ius(sdev) &&
2747                                     !scsi_device_qas(sdev))
2748                                         factor = MPT_ULTRA160;
2749                                 else {
2750                                         factor = MPT_ULTRA320;
2751                                         if (scsi_device_qas(sdev)) {
2752                                                 ddvtprintk((KERN_INFO "Enabling QAS due to byte56=%02x on id=%d!\n", byte56, id));
2753                                                 noQas = 0;
2754                                         }
2755                                         if (sdev->type == TYPE_TAPE &&
2756                                             scsi_device_ius(sdev))
2757                                                 target->negoFlags |= MPT_TAPE_NEGO_IDP;
2758                                 }
2759                         }
2760                         offset = pspi_data->maxSyncOffset;
2761
2762                         /* If RAID, never disable QAS
2763                          * else if non RAID, do not disable
2764                          *   QAS if bit 1 is set
2765                          * bit 1 QAS support, non-raid only
2766                          * bit 0 IU support
2767                          */
2768                         if (target->raidVolume == 1) {
2769                                 noQas = 0;
2770                         }
2771                 } else {
2772                         factor = MPT_ASYNC;
2773                         offset = 0;
2774                 }
2775         }
2776
2777         if (!sdev->tagged_supported) {
2778                 target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
2779         }
2780
2781         /* Update tflags based on NVRAM settings. (SCSI only)
2782          */
2783         if (pspi_data->nvram && (pspi_data->nvram[id] != MPT_HOST_NVRAM_INVALID)) {
2784                 nvram = pspi_data->nvram[id];
2785                 nfactor = (nvram & MPT_NVRAM_SYNC_MASK) >> 8;
2786
2787                 if (width)
2788                         width = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
2789
2790                 if (offset > 0) {
2791                         /* Ensure factor is set to the
2792                          * maximum of: adapter, nvram, inquiry
2793                          */
2794                         if (nfactor) {
2795                                 if (nfactor < pspi_data->minSyncFactor )
2796                                         nfactor = pspi_data->minSyncFactor;
2797
2798                                 factor = max(factor, nfactor);
2799                                 if (factor == MPT_ASYNC)
2800                                         offset = 0;
2801                         } else {
2802                                 offset = 0;
2803                                 factor = MPT_ASYNC;
2804                 }
2805                 } else {
2806                         factor = MPT_ASYNC;
2807                 }
2808         }
2809
2810         /* Make sure data is consistent
2811          */
2812         if ((!width) && (factor < MPT_ULTRA2)) {
2813                 factor = MPT_ULTRA2;
2814         }
2815
2816         /* Save the data to the target structure.
2817          */
2818         target->minSyncFactor = factor;
2819         target->maxOffset = offset;
2820         target->maxWidth = width;
2821
2822         target->tflags |= MPT_TARGET_FLAGS_VALID_NEGO;
2823
2824         /* Disable unused features.
2825          */
2826         if (!width)
2827                 target->negoFlags |= MPT_TARGET_NO_NEGO_WIDE;
2828
2829         if (!offset)
2830                 target->negoFlags |= MPT_TARGET_NO_NEGO_SYNC;
2831
2832         if ( factor > MPT_ULTRA320 )
2833                 noQas = 0;
2834
2835         if (noQas && (pspi_data->noQas == 0)) {
2836                 pspi_data->noQas |= MPT_TARGET_NO_NEGO_QAS;
2837                 target->negoFlags |= MPT_TARGET_NO_NEGO_QAS;
2838
2839                 /* Disable QAS in a mixed configuration case
2840                  */
2841
2842                 ddvtprintk((KERN_INFO "Disabling QAS due to noQas=%02x on id=%d!\n", noQas, id));
2843         }
2844 }
2845
2846 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2847
2848 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2849 /*
2850  *  SCSI Config Page functionality ...
2851  */
2852
2853 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2854 /*      mptscsih_writeIOCPage4  - write IOC Page 4
2855  *      @hd: Pointer to a SCSI Host Structure
2856  *      @target_id: write IOC Page4 for this ID & Bus
2857  *
2858  *      Return: -EAGAIN if unable to obtain a Message Frame
2859  *              or 0 if success.
2860  *
2861  *      Remark: We do not wait for a return, write pages sequentially.
2862  */
2863 static int
2864 mptscsih_writeIOCPage4(MPT_SCSI_HOST *hd, int target_id, int bus)
2865 {
2866         MPT_ADAPTER             *ioc = hd->ioc;
2867         Config_t                *pReq;
2868         IOCPage4_t              *IOCPage4Ptr;
2869         MPT_FRAME_HDR           *mf;
2870         dma_addr_t               dataDma;
2871         u16                      req_idx;
2872         u32                      frameOffset;
2873         u32                      flagsLength;
2874         int                      ii;
2875
2876         /* Get a MF for this command.
2877          */
2878         if ((mf = mpt_get_msg_frame(ioc->DoneCtx, ioc)) == NULL) {
2879                 dfailprintk((MYIOC_s_WARN_FMT "writeIOCPage4 : no msg frames!\n",
2880                                         ioc->name));
2881                 return -EAGAIN;
2882         }
2883
2884         /* Set the request and the data pointers.
2885          * Place data at end of MF.
2886          */
2887         pReq = (Config_t *)mf;
2888
2889         req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
2890         frameOffset = ioc->req_sz - sizeof(IOCPage4_t);
2891
2892         /* Complete the request frame (same for all requests).
2893          */
2894         pReq->Action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
2895         pReq->Reserved = 0;
2896         pReq->ChainOffset = 0;
2897         pReq->Function = MPI_FUNCTION_CONFIG;
2898         pReq->ExtPageLength = 0;
2899         pReq->ExtPageType = 0;
2900         pReq->MsgFlags = 0;
2901         for (ii=0; ii < 8; ii++) {
2902                 pReq->Reserved2[ii] = 0;
2903         }
2904
2905         IOCPage4Ptr = ioc->spi_data.pIocPg4;
2906         dataDma = ioc->spi_data.IocPg4_dma;
2907         ii = IOCPage4Ptr->ActiveSEP++;
2908         IOCPage4Ptr->SEP[ii].SEPTargetID = target_id;
2909         IOCPage4Ptr->SEP[ii].SEPBus = bus;
2910         pReq->Header = IOCPage4Ptr->Header;
2911         pReq->PageAddress = cpu_to_le32(target_id | (bus << 8 ));
2912
2913         /* Add a SGE to the config request.
2914          */
2915         flagsLength = MPT_SGE_FLAGS_SSIMPLE_WRITE |
2916                 (IOCPage4Ptr->Header.PageLength + ii) * 4;
2917
2918         mpt_add_sge((char *)&pReq->PageBufferSGE, flagsLength, dataDma);
2919
2920         dinitprintk((MYIOC_s_INFO_FMT
2921                 "writeIOCPage4: MaxSEP=%d ActiveSEP=%d id=%d bus=%d\n",
2922                         ioc->name, IOCPage4Ptr->MaxSEP, IOCPage4Ptr->ActiveSEP, target_id, bus));
2923
2924         mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
2925
2926         return 0;
2927 }
2928
2929 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2930 /*
2931  *  Bus Scan and Domain Validation functionality ...
2932  */
2933
2934 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2935 /*
2936  *      mptscsih_scandv_complete - Scan and DV callback routine registered
2937  *      to Fustion MPT (base) driver.
2938  *
2939  *      @ioc: Pointer to MPT_ADAPTER structure
2940  *      @mf: Pointer to original MPT request frame
2941  *      @mr: Pointer to MPT reply frame (NULL if TurboReply)
2942  *
2943  *      This routine is called from mpt.c::mpt_interrupt() at the completion
2944  *      of any SCSI IO request.
2945  *      This routine is registered with the Fusion MPT (base) driver at driver
2946  *      load/init time via the mpt_register() API call.
2947  *
2948  *      Returns 1 indicating alloc'd request frame ptr should be freed.
2949  *
2950  *      Remark: Sets a completion code and (possibly) saves sense data
2951  *      in the IOC member localReply structure.
2952  *      Used ONLY for DV and other internal commands.
2953  */
2954 int
2955 mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
2956 {
2957         MPT_SCSI_HOST   *hd;
2958         SCSIIORequest_t *pReq;
2959         int              completionCode;
2960         u16              req_idx;
2961
2962         hd = (MPT_SCSI_HOST *) ioc->sh->hostdata;
2963
2964         if ((mf == NULL) ||
2965             (mf >= MPT_INDEX_2_MFPTR(ioc, ioc->req_depth))) {
2966                 printk(MYIOC_s_ERR_FMT
2967                         "ScanDvComplete, %s req frame ptr! (=%p)\n",
2968                                 ioc->name, mf?"BAD":"NULL", (void *) mf);
2969                 goto wakeup;
2970         }
2971
2972         del_timer(&hd->timer);
2973         req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
2974         hd->ScsiLookup[req_idx] = NULL;
2975         pReq = (SCSIIORequest_t *) mf;
2976
2977         if (mf != hd->cmdPtr) {
2978                 printk(MYIOC_s_WARN_FMT "ScanDvComplete (mf=%p, cmdPtr=%p, idx=%d)\n",
2979                                 hd->ioc->name, (void *)mf, (void *) hd->cmdPtr, req_idx);
2980         }
2981         hd->cmdPtr = NULL;
2982
2983         ddvprintk((MYIOC_s_INFO_FMT "ScanDvComplete (mf=%p,mr=%p,idx=%d)\n",
2984                         hd->ioc->name, mf, mr, req_idx));
2985
2986         hd->pLocal = &hd->localReply;
2987         hd->pLocal->scsiStatus = 0;
2988
2989         /* If target struct exists, clear sense valid flag.
2990          */
2991         if (mr == NULL) {
2992                 completionCode = MPT_SCANDV_GOOD;
2993         } else {
2994                 SCSIIOReply_t   *pReply;
2995                 u16              status;
2996                 u8               scsi_status;
2997
2998                 pReply = (SCSIIOReply_t *) mr;
2999
3000                 status = le16_to_cpu(pReply->IOCStatus) & MPI_IOCSTATUS_MASK;
3001                 scsi_status = pReply->SCSIStatus;
3002
3003                 ddvtprintk((KERN_NOTICE "  IOCStatus=%04xh, SCSIState=%02xh, SCSIStatus=%02xh, IOCLogInfo=%08xh\n",
3004                              status, pReply->SCSIState, scsi_status,
3005                              le32_to_cpu(pReply->IOCLogInfo)));
3006
3007                 switch(status) {
3008
3009                 case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:       /* 0x0043 */
3010                         completionCode = MPT_SCANDV_SELECTION_TIMEOUT;
3011                         break;
3012
3013                 case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:          /* 0x0046 */
3014                 case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:        /* 0x0048 */
3015                 case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:         /* 0x004B */
3016                 case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:         /* 0x004C */
3017                         completionCode = MPT_SCANDV_DID_RESET;
3018                         break;
3019
3020                 case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:          /* 0x0045 */
3021                 case MPI_IOCSTATUS_SCSI_RECOVERED_ERROR:        /* 0x0040 */
3022                 case MPI_IOCSTATUS_SUCCESS:                     /* 0x0000 */
3023                         if (pReply->Function == MPI_FUNCTION_CONFIG) {
3024                                 ConfigReply_t *pr = (ConfigReply_t *)mr;
3025                                 completionCode = MPT_SCANDV_GOOD;
3026                                 hd->pLocal->header.PageVersion = pr->Header.PageVersion;
3027                                 hd->pLocal->header.PageLength = pr->Header.PageLength;
3028                                 hd->pLocal->header.PageNumber = pr->Header.PageNumber;
3029                                 hd->pLocal->header.PageType = pr->Header.PageType;
3030
3031                         } else if (pReply->Function == MPI_FUNCTION_RAID_ACTION) {
3032                                 /* If the RAID Volume request is successful,
3033                                  * return GOOD, else indicate that
3034                                  * some type of error occurred.
3035                                  */
3036                                 MpiRaidActionReply_t    *pr = (MpiRaidActionReply_t *)mr;
3037                                 if (le16_to_cpu(pr->ActionStatus) == MPI_RAID_ACTION_ASTATUS_SUCCESS)
3038                                         completionCode = MPT_SCANDV_GOOD;
3039                                 else
3040                                         completionCode = MPT_SCANDV_SOME_ERROR;
3041                                 memcpy(hd->pLocal->sense, pr, sizeof(hd->pLocal->sense));
3042
3043                         } else if (pReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_VALID) {
3044                                 u8              *sense_data;
3045                                 int              sz;
3046
3047                                 /* save sense data in global structure
3048                                  */
3049                                 completionCode = MPT_SCANDV_SENSE;
3050                                 hd->pLocal->scsiStatus = scsi_status;
3051                                 sense_data = ((u8 *)hd->ioc->sense_buf_pool +
3052                                         (req_idx * MPT_SENSE_BUFFER_ALLOC));
3053
3054                                 sz = min_t(int, pReq->SenseBufferLength,
3055                                                         SCSI_STD_SENSE_BYTES);
3056                                 memcpy(hd->pLocal->sense, sense_data, sz);
3057
3058                                 ddvprintk((KERN_NOTICE "  Check Condition, sense ptr %p\n",
3059                                                 sense_data));
3060                         } else if (pReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_FAILED) {
3061                                 if (pReq->CDB[0] == INQUIRY)
3062                                         completionCode = MPT_SCANDV_ISSUE_SENSE;
3063                                 else
3064                                         completionCode = MPT_SCANDV_DID_RESET;
3065                         }
3066                         else if (pReply->SCSIState & MPI_SCSI_STATE_NO_SCSI_STATUS)
3067                                 completionCode = MPT_SCANDV_DID_RESET;
3068                         else if (pReply->SCSIState & MPI_SCSI_STATE_TERMINATED)
3069                                 completionCode = MPT_SCANDV_DID_RESET;
3070                         else {
3071                                 completionCode = MPT_SCANDV_GOOD;
3072                                 hd->pLocal->scsiStatus = scsi_status;
3073                         }
3074                         break;
3075
3076                 case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:         /* 0x0047 */
3077                         if (pReply->SCSIState & MPI_SCSI_STATE_TERMINATED)
3078                                 completionCode = MPT_SCANDV_DID_RESET;
3079                         else
3080                                 completionCode = MPT_SCANDV_SOME_ERROR;
3081                         break;
3082
3083                 default:
3084                         completionCode = MPT_SCANDV_SOME_ERROR;
3085                         break;
3086
3087                 }       /* switch(status) */
3088
3089                 ddvtprintk((KERN_NOTICE "  completionCode set to %08xh\n",
3090                                 completionCode));
3091         } /* end of address reply case */
3092
3093         hd->pLocal->completion = completionCode;
3094
3095         /* MF and RF are freed in mpt_interrupt
3096          */
3097 wakeup:
3098         /* Free Chain buffers (will never chain) in scan or dv */
3099         //mptscsih_freeChainBuffers(ioc, req_idx);
3100
3101         /*
3102          * Wake up the original calling thread
3103          */
3104         hd->scandv_wait_done = 1;
3105         wake_up(&hd->scandv_waitq);
3106
3107         return 1;
3108 }
3109
3110 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
3111 /*      mptscsih_timer_expired - Call back for timer process.
3112  *      Used only for dv functionality.
3113  *      @data: Pointer to MPT_SCSI_HOST recast as an unsigned long
3114  *
3115  */
3116 void
3117 mptscsih_timer_expired(unsigned long data)
3118 {
3119         MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *) data;
3120
3121         ddvprintk((MYIOC_s_WARN_FMT "Timer Expired! Cmd %p\n", hd->ioc->name, hd->cmdPtr));
3122
3123         if (hd->cmdPtr) {
3124                 MPIHeader_t *cmd = (MPIHeader_t *)hd->cmdPtr;
3125
3126                 if (cmd->Function == MPI_FUNCTION_SCSI_IO_REQUEST) {
3127                         /* Desire to issue a task management request here.
3128                          * TM requests MUST be single threaded.
3129                          * If old eh code and no TM current, issue request.
3130                          * If new eh code, do nothing. Wait for OS cmd timeout
3131                          *      for bus reset.
3132                          */
3133                         ddvtprintk((MYIOC_s_NOTE_FMT "DV Cmd Timeout: NoOp\n", hd->ioc->name));
3134                 } else {
3135                         /* Perform a FW reload */
3136                         if (mpt_HardResetHandler(hd->ioc, NO_SLEEP) < 0) {
3137                                 printk(MYIOC_s_WARN_FMT "Firmware Reload FAILED!\n", hd->ioc->name);
3138                         }
3139                 }
3140         } else {
3141                 /* This should NEVER happen */
3142                 printk(MYIOC_s_WARN_FMT "Null cmdPtr!!!!\n", hd->ioc->name);
3143         }
3144
3145         /* No more processing.
3146          * TM call will generate an interrupt for SCSI TM Management.
3147          * The FW will reply to all outstanding commands, callback will finish cleanup.
3148          * Hard reset clean-up will free all resources.
3149          */
3150         ddvprintk((MYIOC_s_WARN_FMT "Timer Expired Complete!\n", hd->ioc->name));
3151
3152         return;
3153 }
3154
3155
3156 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
3157 /**
3158  *      mptscsih_do_cmd - Do internal command.
3159  *      @hd: MPT_SCSI_HOST pointer
3160  *      @io: INTERNAL_CMD pointer.
3161  *
3162  *      Issue the specified internally generated command and do command
3163  *      specific cleanup. For bus scan / DV only.
3164  *      NOTES: If command is Inquiry and status is good,
3165  *      initialize a target structure, save the data
3166  *
3167  *      Remark: Single threaded access only.
3168  *
3169  *      Return:
3170  *              < 0 if an illegal command or no resources
3171  *
3172  *                 0 if good
3173  *
3174  *               > 0 if command complete but some type of completion error.
3175  */
3176 static int
3177 mptscsih_do_cmd(MPT_SCSI_HOST *hd, INTERNAL_CMD *io)
3178 {
3179         MPT_FRAME_HDR   *mf;
3180         SCSIIORequest_t *pScsiReq;
3181         SCSIIORequest_t  ReqCopy;
3182         int              my_idx, ii, dir;
3183         int              rc, cmdTimeout;
3184         int             in_isr;
3185         char             cmdLen;
3186         char             CDB[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
3187         char             cmd = io->cmd;
3188
3189         in_isr = in_interrupt();
3190         if (in_isr) {
3191                 dprintk((MYIOC_s_WARN_FMT "Internal SCSI IO request not allowed in ISR context!\n",
3192                                 hd->ioc->name));
3193                 return -EPERM;
3194         }
3195
3196
3197         /* Set command specific information
3198          */
3199         switch (cmd) {
3200         case INQUIRY:
3201                 cmdLen = 6;
3202                 dir = MPI_SCSIIO_CONTROL_READ;
3203                 CDB[0] = cmd;
3204                 CDB[4] = io->size;
3205                 cmdTimeout = 10;
3206                 break;
3207
3208         case TEST_UNIT_READY:
3209                 cmdLen = 6;
3210                 dir = MPI_SCSIIO_CONTROL_READ;
3211                 cmdTimeout = 10;
3212                 break;
3213
3214         case START_STOP:
3215                 cmdLen = 6;
3216                 dir = MPI_SCSIIO_CONTROL_READ;
3217                 CDB[0] = cmd;
3218                 CDB[4] = 1;     /*Spin up the disk */
3219                 cmdTimeout = 15;
3220                 break;
3221
3222         case REQUEST_SENSE:
3223                 cmdLen = 6;
3224                 CDB[0] = cmd;
3225                 CDB[4] = io->size;
3226                 dir = MPI_SCSIIO_CONTROL_READ;
3227                 cmdTimeout = 10;
3228                 break;
3229
3230         case READ_BUFFER:
3231                 cmdLen = 10;
3232                 dir = MPI_SCSIIO_CONTROL_READ;
3233                 CDB[0] = cmd;
3234                 if (io->flags & MPT_ICFLAG_ECHO) {
3235                         CDB[1] = 0x0A;
3236                 } else {
3237                         CDB[1] = 0x02;
3238                 }
3239
3240                 if (io->flags & MPT_ICFLAG_BUF_CAP) {
3241                         CDB[1] |= 0x01;
3242                 }
3243                 CDB[6] = (io->size >> 16) & 0xFF;
3244                 CDB[7] = (io->size >>  8) & 0xFF;
3245                 CDB[8] = io->size & 0xFF;
3246                 cmdTimeout = 10;
3247                 break;
3248
3249         case WRITE_BUFFER:
3250                 cmdLen = 10;
3251                 dir = MPI_SCSIIO_CONTROL_WRITE;
3252                 CDB[0] = cmd;
3253                 if (io->flags & MPT_ICFLAG_ECHO) {
3254                         CDB[1] = 0x0A;
3255                 } else {
3256                         CDB[1] = 0x02;
3257                 }
3258                 CDB[6] = (io->size >> 16) & 0xFF;
3259                 CDB[7] = (io->size >>  8) & 0xFF;
3260                 CDB[8] = io->size & 0xFF;
3261                 cmdTimeout = 10;
3262                 break;
3263
3264         case RESERVE:
3265                 cmdLen = 6;
3266                 dir = MPI_SCSIIO_CONTROL_READ;
3267                 CDB[0] = cmd;
3268                 cmdTimeout = 10;
3269                 break;
3270
3271         case RELEASE:
3272                 cmdLen = 6;
3273                 dir = MPI_SCSIIO_CONTROL_READ;
3274                 CDB[0] = cmd;
3275                 cmdTimeout = 10;
3276                 break;
3277
3278         case SYNCHRONIZE_CACHE:
3279                 cmdLen = 10;
3280                 dir = MPI_SCSIIO_CONTROL_READ;
3281                 CDB[0] = cmd;
3282 //              CDB[1] = 0x02;  /* set immediate bit */
3283                 cmdTimeout = 10;
3284                 break;
3285
3286         default:
3287                 /* Error Case */
3288                 return -EFAULT;
3289         }
3290
3291         /* Get and Populate a free Frame
3292          */
3293         if ((mf = mpt_get_msg_frame(hd->ioc->InternalCtx, hd->ioc)) == NULL) {
3294                 ddvprintk((MYIOC_s_WARN_FMT "No msg frames!\n",
3295                                         hd->ioc->name));
3296                 return -EBUSY;
3297         }
3298
3299         pScsiReq = (SCSIIORequest_t *) mf;
3300
3301         /* Get the request index */
3302         my_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
3303         ADD_INDEX_LOG(my_idx); /* for debug */
3304
3305         if (io->flags & MPT_ICFLAG_PHYS_DISK) {
3306                 pScsiReq->TargetID = io->physDiskNum;
3307                 pScsiReq->Bus = 0;
3308                 pScsiReq->ChainOffset = 0;
3309                 pScsiReq->Function = MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
3310         } else {
3311                 pScsiReq->TargetID = io->id;
3312                 pScsiReq->Bus = io->bus;
3313                 pScsiReq->ChainOffset = 0;
3314                 pScsiReq->Function = MPI_FUNCTION_SCSI_IO_REQUEST;
3315         }
3316
3317         pScsiReq->CDBLength = cmdLen;
3318         pScsiReq->SenseBufferLength = MPT_SENSE_BUFFER_SIZE;
3319
3320         pScsiReq->Reserved = 0;
3321
3322         pScsiReq->MsgFlags = mpt_msg_flags();
3323         /* MsgContext set in mpt_get_msg_fram call  */
3324
3325         for (ii=0; ii < 8; ii++)
3326                 pScsiReq->LUN[ii] = 0;
3327         pScsiReq->LUN[1] = io->lun;
3328
3329         if (io->flags & MPT_ICFLAG_TAGGED_CMD)
3330                 pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_SIMPLEQ);
3331         else
3332                 pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_UNTAGGED);
3333
3334         if (cmd == REQUEST_SENSE) {
3335                 pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_UNTAGGED);
3336                 ddvprintk((MYIOC_s_INFO_FMT "Untagged! 0x%2x\n",
3337                         hd->ioc->name, cmd));
3338         }
3339
3340         for (ii=0; ii < 16; ii++)
3341                 pScsiReq->CDB[ii] = CDB[ii];
3342
3343         pScsiReq->DataLength = cpu_to_le32(io->size);
3344         pScsiReq->SenseBufferLowAddr = cpu_to_le32(hd->ioc->sense_buf_low_dma
3345                                            + (my_idx * MPT_SENSE_BUFFER_ALLOC));
3346
3347         ddvprintk((MYIOC_s_INFO_FMT "Sending Command 0x%x for (%d:%d:%d)\n",
3348                         hd->ioc->name, cmd, io->bus, io->id, io->lun));
3349
3350         if (dir == MPI_SCSIIO_CONTROL_READ) {
3351                 mpt_add_sge((char *) &pScsiReq->SGL,
3352                         MPT_SGE_FLAGS_SSIMPLE_READ | io->size,
3353                         io->data_dma);
3354         } else {
3355                 mpt_add_sge((char *) &pScsiReq->SGL,
3356                         MPT_SGE_FLAGS_SSIMPLE_WRITE | io->size,
3357                         io->data_dma);
3358         }
3359
3360         /* The ISR will free the request frame, but we need
3361          * the information to initialize the target. Duplicate.
3362          */
3363         memcpy(&ReqCopy, pScsiReq, sizeof(SCSIIORequest_t));
3364
3365         /* Issue this command after:
3366          *      finish init
3367          *      add timer
3368          * Wait until the reply has been received
3369          *  ScsiScanDvCtx callback function will
3370          *      set hd->pLocal;
3371          *      set scandv_wait_done and call wake_up
3372          */
3373         hd->pLocal = NULL;
3374         hd->timer.expires = jiffies + HZ*cmdTimeout;
3375         hd->scandv_wait_done = 0;
3376
3377         /* Save cmd pointer, for resource free if timeout or
3378          * FW reload occurs
3379          */
3380         hd->cmdPtr = mf;
3381
3382         add_timer(&hd->timer);
3383         mpt_put_msg_frame(hd->ioc->InternalCtx, hd->ioc, mf);
3384         wait_event(hd->scandv_waitq, hd->scandv_wait_done);
3385
3386         if (hd->pLocal) {
3387                 rc = hd->pLocal->completion;
3388                 hd->pLocal->skip = 0;
3389
3390                 /* Always set fatal error codes in some cases.
3391                  */
3392                 if (rc == MPT_SCANDV_SELECTION_TIMEOUT)
3393                         rc = -ENXIO;
3394                 else if (rc == MPT_SCANDV_SOME_ERROR)
3395                         rc =  -rc;
3396         } else {
3397                 rc = -EFAULT;
3398                 /* This should never happen. */
3399                 ddvprintk((MYIOC_s_INFO_FMT "_do_cmd: Null pLocal!!!\n",
3400                                 hd->ioc->name));
3401         }
3402
3403         return rc;
3404 }
3405
3406 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
3407 /**
3408  *      mptscsih_synchronize_cache - Send SYNCHRONIZE_CACHE to all disks.
3409  *      @hd: Pointer to a SCSI HOST structure
3410  *      @vtarget: per device private data
3411  *      @lun: lun
3412  *
3413  *      Uses the ISR, but with special processing.
3414  *      MUST be single-threaded.
3415  *
3416  */
3417 static void
3418 mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
3419 {
3420         INTERNAL_CMD             iocmd;
3421
3422         /* Following parameters will not change
3423          * in this routine.
3424          */
3425         iocmd.cmd = SYNCHRONIZE_CACHE;
3426         iocmd.flags = 0;
3427         iocmd.physDiskNum = -1;
3428         iocmd.data = NULL;
3429         iocmd.data_dma = -1;
3430         iocmd.size = 0;
3431         iocmd.rsvd = iocmd.rsvd2 = 0;
3432         iocmd.bus = vdevice->vtarget->bus_id;
3433         iocmd.id = vdevice->vtarget->target_id;
3434         iocmd.lun = (u8)vdevice->lun;
3435
3436         if ((vdevice->vtarget->type == TYPE_DISK) &&
3437             (vdevice->configured_lun))
3438                 mptscsih_do_cmd(hd, &iocmd);
3439 }
3440
3441 EXPORT_SYMBOL(mptscsih_remove);
3442 EXPORT_SYMBOL(mptscsih_shutdown);
3443 #ifdef CONFIG_PM
3444 EXPORT_SYMBOL(mptscsih_suspend);
3445 EXPORT_SYMBOL(mptscsih_resume);
3446 #endif
3447 EXPORT_SYMBOL(mptscsih_proc_info);
3448 EXPORT_SYMBOL(mptscsih_info);
3449 EXPORT_SYMBOL(mptscsih_qcmd);
3450 EXPORT_SYMBOL(mptscsih_target_alloc);
3451 EXPORT_SYMBOL(mptscsih_slave_alloc);
3452 EXPORT_SYMBOL(mptscsih_target_destroy);
3453 EXPORT_SYMBOL(mptscsih_slave_destroy);
3454 EXPORT_SYMBOL(mptscsih_slave_configure);
3455 EXPORT_SYMBOL(mptscsih_abort);
3456 EXPORT_SYMBOL(mptscsih_dev_reset);
3457 EXPORT_SYMBOL(mptscsih_bus_reset);
3458 EXPORT_SYMBOL(mptscsih_host_reset);
3459 EXPORT_SYMBOL(mptscsih_bios_param);
3460 EXPORT_SYMBOL(mptscsih_io_done);
3461 EXPORT_SYMBOL(mptscsih_taskmgmt_complete);
3462 EXPORT_SYMBOL(mptscsih_scandv_complete);
3463 EXPORT_SYMBOL(mptscsih_event_process);
3464 EXPORT_SYMBOL(mptscsih_ioc_reset);
3465 EXPORT_SYMBOL(mptscsih_change_queue_depth);
3466 EXPORT_SYMBOL(mptscsih_timer_expired);
3467 EXPORT_SYMBOL(mptscsih_TMHandler);
3468
3469 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/