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   1 /*
   2  *  linux/drivers/message/fusion/mptspi.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) 1999-2007 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 #include <linux/raid_class.h>
  60
  61 #include <scsi/scsi.h>
  62 #include <scsi/scsi_cmnd.h>
  63 #include <scsi/scsi_device.h>
  64 #include <scsi/scsi_host.h>
  65 #include <scsi/scsi_tcq.h>
  66 #include <scsi/scsi_transport.h>
  67 #include <scsi/scsi_transport_spi.h>
  68
  69 #include "mptbase.h"
  70 #include "mptscsih.h"
  71
  72 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
  73 #define my_NAME         "Fusion MPT SPI Host driver"
  74 #define my_VERSION      MPT_LINUX_VERSION_COMMON
  75 #define MYNAM           "mptspi"
  76
  77 MODULE_AUTHOR(MODULEAUTHOR);
  78 MODULE_DESCRIPTION(my_NAME);
  79 MODULE_LICENSE("GPL");
  80 MODULE_VERSION(my_VERSION);
  81
  82 /* Command line args */
  83 static int mpt_saf_te = MPTSCSIH_SAF_TE;
  84 module_param(mpt_saf_te, int, 0);
  85 MODULE_PARM_DESC(mpt_saf_te, " Force enabling SEP Processor: enable=1  (default=MPTSCSIH_SAF_TE=0)");
  86
  87 static void mptspi_write_offset(struct scsi_target *, int);
  88 static void mptspi_write_width(struct scsi_target *, int);
  89 static int mptspi_write_spi_device_pg1(struct scsi_target *,
  90                                        struct _CONFIG_PAGE_SCSI_DEVICE_1 *);
  91
  92 static struct scsi_transport_template *mptspi_transport_template = NULL;
  93
  94 static int      mptspiDoneCtx = -1;
  95 static int      mptspiTaskCtx = -1;
  96 static int      mptspiInternalCtx = -1; /* Used only for internal commands */
  97
  98 /**
  99  *      mptspi_setTargetNegoParms  - Update the target negotiation
 100  *      parameters based on the the Inquiry data, adapter capabilities,
 101  *      and NVRAM settings
 102  *
 103  *      @hd: Pointer to a SCSI Host Structure
 104  *      @vtarget: per target private data
 105  *      @sdev: SCSI device
 106  *
 107  **/
 108 static void
 109 mptspi_setTargetNegoParms(MPT_SCSI_HOST *hd, VirtTarget *target,
 110                             struct scsi_device *sdev)
 111 {
 112         SpiCfgData *pspi_data = &hd->ioc->spi_data;
 113         int  id = (int) target->id;
 114         int  nvram;
 115         u8 width = MPT_NARROW;
 116         u8 factor = MPT_ASYNC;
 117         u8 offset = 0;
 118         u8 nfactor;
 119         u8 noQas = 1;
 120
 121         target->negoFlags = pspi_data->noQas;
 122
 123         if (sdev->scsi_level < SCSI_2) {
 124                 width = 0;
 125                 factor = MPT_ULTRA2;
 126                 offset = pspi_data->maxSyncOffset;
 127                 target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
 128         } else {
 129                 if (scsi_device_wide(sdev))
 130                         width = 1;
 131
 132                 if (scsi_device_sync(sdev)) {
 133                         factor = pspi_data->minSyncFactor;
 134                         if (!scsi_device_dt(sdev))
 135                                         factor = MPT_ULTRA2;
 136                         else {
 137                                 if (!scsi_device_ius(sdev) &&
 138                                     !scsi_device_qas(sdev))
 139                                         factor = MPT_ULTRA160;
 140                                 else {
 141                                         factor = MPT_ULTRA320;
 142                                         if (scsi_device_qas(sdev)) {
 143                                                 ddvprintk((KERN_INFO "Enabling QAS due to byte56=%02x on id=%d!\n", scsi_device_qas(sdev), id));
 144                                                 noQas = 0;
 145                                         }
 146                                         if (sdev->type == TYPE_TAPE &&
 147                                             scsi_device_ius(sdev))
 148                                                 target->negoFlags |= MPT_TAPE_NEGO_IDP;
 149                                 }
 150                         }
 151                         offset = pspi_data->maxSyncOffset;
 152
 153                         /* If RAID, never disable QAS
 154                          * else if non RAID, do not disable
 155                          *   QAS if bit 1 is set
 156                          * bit 1 QAS support, non-raid only
 157                          * bit 0 IU support
 158                          */
 159                         if (target->raidVolume == 1)
 160                                 noQas = 0;
 161                 } else {
 162                         factor = MPT_ASYNC;
 163                         offset = 0;
 164                 }
 165         }
 166
 167         if (!sdev->tagged_supported)
 168                 target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
 169
 170         /* Update tflags based on NVRAM settings. (SCSI only)
 171          */
 172         if (pspi_data->nvram && (pspi_data->nvram[id] != MPT_HOST_NVRAM_INVALID)) {
 173                 nvram = pspi_data->nvram[id];
 174                 nfactor = (nvram & MPT_NVRAM_SYNC_MASK) >> 8;
 175
 176                 if (width)
 177                         width = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
 178
 179                 if (offset > 0) {
 180                         /* Ensure factor is set to the
 181                          * maximum of: adapter, nvram, inquiry
 182                          */
 183                         if (nfactor) {
 184                                 if (nfactor < pspi_data->minSyncFactor )
 185                                         nfactor = pspi_data->minSyncFactor;
 186
 187                                 factor = max(factor, nfactor);
 188                                 if (factor == MPT_ASYNC)
 189                                         offset = 0;
 190                         } else {
 191                                 offset = 0;
 192                                 factor = MPT_ASYNC;
 193                 }
 194                 } else {
 195                         factor = MPT_ASYNC;
 196                 }
 197         }
 198
 199         /* Make sure data is consistent
 200          */
 201         if ((!width) && (factor < MPT_ULTRA2))
 202                 factor = MPT_ULTRA2;
 203
 204         /* Save the data to the target structure.
 205          */
 206         target->minSyncFactor = factor;
 207         target->maxOffset = offset;
 208         target->maxWidth = width;
 209
 210         target->tflags |= MPT_TARGET_FLAGS_VALID_NEGO;
 211
 212         /* Disable unused features.
 213          */
 214         if (!width)
 215                 target->negoFlags |= MPT_TARGET_NO_NEGO_WIDE;
 216
 217         if (!offset)
 218                 target->negoFlags |= MPT_TARGET_NO_NEGO_SYNC;
 219
 220         if ( factor > MPT_ULTRA320 )
 221                 noQas = 0;
 222
 223         if (noQas && (pspi_data->noQas == 0)) {
 224                 pspi_data->noQas |= MPT_TARGET_NO_NEGO_QAS;
 225                 target->negoFlags |= MPT_TARGET_NO_NEGO_QAS;
 226
 227                 /* Disable QAS in a mixed configuration case
 228                  */
 229
 230                 ddvprintk((KERN_INFO "Disabling QAS due to noQas=%02x on id=%d!\n", noQas, id));
 231         }
 232 }
 233
 234 /**
 235  *      mptspi_writeIOCPage4  - write IOC Page 4
 236  *      @hd: Pointer to a SCSI Host Structure
 237  *      @channel:
 238  *      @id: write IOC Page4 for this ID & Bus
 239  *
 240  *      Return: -EAGAIN if unable to obtain a Message Frame
 241  *              or 0 if success.
 242  *
 243  *      Remark: We do not wait for a return, write pages sequentially.
 244  **/
 245 static int
 246 mptspi_writeIOCPage4(MPT_SCSI_HOST *hd, u8 channel , u8 id)
 247 {
 248         MPT_ADAPTER             *ioc = hd->ioc;
 249         Config_t                *pReq;
 250         IOCPage4_t              *IOCPage4Ptr;
 251         MPT_FRAME_HDR           *mf;
 252         dma_addr_t               dataDma;
 253         u16                      req_idx;
 254         u32                      frameOffset;
 255         u32                      flagsLength;
 256         int                      ii;
 257
 258         /* Get a MF for this command.
 259          */
 260         if ((mf = mpt_get_msg_frame(ioc->DoneCtx, ioc)) == NULL) {
 261                 dfailprintk((MYIOC_s_WARN_FMT "writeIOCPage4 : no msg frames!\n",
 262                                         ioc->name));
 263                 return -EAGAIN;
 264         }
 265
 266         /* Set the request and the data pointers.
 267          * Place data at end of MF.
 268          */
 269         pReq = (Config_t *)mf;
 270
 271         req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
 272         frameOffset = ioc->req_sz - sizeof(IOCPage4_t);
 273
 274         /* Complete the request frame (same for all requests).
 275          */
 276         pReq->Action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
 277         pReq->Reserved = 0;
 278         pReq->ChainOffset = 0;
 279         pReq->Function = MPI_FUNCTION_CONFIG;
 280         pReq->ExtPageLength = 0;
 281         pReq->ExtPageType = 0;
 282         pReq->MsgFlags = 0;
 283         for (ii=0; ii < 8; ii++) {
 284                 pReq->Reserved2[ii] = 0;
 285         }
 286
 287         IOCPage4Ptr = ioc->spi_data.pIocPg4;
 288         dataDma = ioc->spi_data.IocPg4_dma;
 289         ii = IOCPage4Ptr->ActiveSEP++;
 290         IOCPage4Ptr->SEP[ii].SEPTargetID = id;
 291         IOCPage4Ptr->SEP[ii].SEPBus = channel;
 292         pReq->Header = IOCPage4Ptr->Header;
 293         pReq->PageAddress = cpu_to_le32(id | (channel << 8 ));
 294
 295         /* Add a SGE to the config request.
 296          */
 297         flagsLength = MPT_SGE_FLAGS_SSIMPLE_WRITE |
 298                 (IOCPage4Ptr->Header.PageLength + ii) * 4;
 299
 300         mpt_add_sge((char *)&pReq->PageBufferSGE, flagsLength, dataDma);
 301
 302         ddvprintk((MYIOC_s_INFO_FMT
 303                 "writeIOCPage4: MaxSEP=%d ActiveSEP=%d id=%d bus=%d\n",
 304                         ioc->name, IOCPage4Ptr->MaxSEP, IOCPage4Ptr->ActiveSEP, id, channel));
 305
 306         mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
 307
 308         return 0;
 309 }
 310
 311 /**
 312  *      mptspi_initTarget - Target, LUN alloc/free functionality.
 313  *      @hd: Pointer to MPT_SCSI_HOST structure
 314  *      @vtarget: per target private data
 315  *      @sdev: SCSI device
 316  *
 317  *      NOTE: It's only SAFE to call this routine if data points to
 318  *      sane & valid STANDARD INQUIRY data!
 319  *
 320  *      Allocate and initialize memory for this target.
 321  *      Save inquiry data.
 322  *
 323  **/
 324 static void
 325 mptspi_initTarget(MPT_SCSI_HOST *hd, VirtTarget *vtarget,
 326                     struct scsi_device *sdev)
 327 {
 328
 329         /* Is LUN supported? If so, upper 2 bits will be 0
 330         * in first byte of inquiry data.
 331         */
 332         if (sdev->inq_periph_qual != 0)
 333                 return;
 334
 335         if (vtarget == NULL)
 336                 return;
 337
 338         vtarget->type = sdev->type;
 339
 340         if ((sdev->type == TYPE_PROCESSOR) && (hd->ioc->spi_data.Saf_Te)) {
 341                 /* Treat all Processors as SAF-TE if
 342                  * command line option is set */
 343                 vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
 344                 mptspi_writeIOCPage4(hd, vtarget->channel, vtarget->id);
 345         }else if ((sdev->type == TYPE_PROCESSOR) &&
 346                 !(vtarget->tflags & MPT_TARGET_FLAGS_SAF_TE_ISSUED )) {
 347                 if (sdev->inquiry_len > 49 ) {
 348                         if (sdev->inquiry[44] == 'S' &&
 349                             sdev->inquiry[45] == 'A' &&
 350                             sdev->inquiry[46] == 'F' &&
 351                             sdev->inquiry[47] == '-' &&
 352                             sdev->inquiry[48] == 'T' &&
 353                             sdev->inquiry[49] == 'E' ) {
 354                                 vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
 355                                 mptspi_writeIOCPage4(hd, vtarget->channel, vtarget->id);
 356                         }
 357                 }
 358         }
 359         mptspi_setTargetNegoParms(hd, vtarget, sdev);
 360 }
 361
 362 /**
 363  *      mptspi_is_raid - Determines whether target is belonging to volume
 364  *      @hd: Pointer to a SCSI HOST structure
 365  *      @id: target device id
 366  *
 367  *      Return:
 368  *              non-zero = true
 369  *              zero = false
 370  *
 371  */
 372 static int
 373 mptspi_is_raid(struct _MPT_SCSI_HOST *hd, u32 id)
 374 {
 375         int i, rc = 0;
 376
 377         if (!hd->ioc->raid_data.pIocPg2)
 378                 goto out;
 379
 380         if (!hd->ioc->raid_data.pIocPg2->NumActiveVolumes)
 381                 goto out;
 382         for (i=0; i < hd->ioc->raid_data.pIocPg2->NumActiveVolumes; i++) {
 383                 if (hd->ioc->raid_data.pIocPg2->RaidVolume[i].VolumeID == id) {
 384                         rc = 1;
 385                         goto out;
 386                 }
 387         }
 388
 389  out:
 390         return rc;
 391 }
 392
 393 static int mptspi_target_alloc(struct scsi_target *starget)
 394 {
 395         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
 396         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
 397         VirtTarget              *vtarget;
 398
 399         if (hd == NULL)
 400                 return -ENODEV;
 401
 402         vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
 403         if (!vtarget)
 404                 return -ENOMEM;
 405
 406         vtarget->ioc_id = hd->ioc->id;
 407         vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
 408         vtarget->id = (u8)starget->id;
 409         vtarget->channel = (u8)starget->channel;
 410         vtarget->starget = starget;
 411         starget->hostdata = vtarget;
 412
 413         if (starget->channel == 1) {
 414                 if (mptscsih_is_phys_disk(hd->ioc, 0, starget->id) == 0)
 415                         return 0;
 416                 vtarget->tflags |= MPT_TARGET_FLAGS_RAID_COMPONENT;
 417                 /* The real channel for this device is zero */
 418                 vtarget->channel = 0;
 419                 /* The actual physdisknum (for RAID passthrough) */
 420                 vtarget->id = mptscsih_raid_id_to_num(hd->ioc, 0,
 421                     starget->id);
 422         }
 423
 424         if (starget->channel == 0 &&
 425             mptspi_is_raid(hd, starget->id)) {
 426                 vtarget->raidVolume = 1;
 427                 ddvprintk((KERN_INFO
 428                     "RAID Volume @ channel=%d id=%d\n", starget->channel,
 429                     starget->id));
 430         }
 431
 432         if (hd->ioc->spi_data.nvram &&
 433             hd->ioc->spi_data.nvram[starget->id] != MPT_HOST_NVRAM_INVALID) {
 434                 u32 nvram = hd->ioc->spi_data.nvram[starget->id];
 435                 spi_min_period(starget) = (nvram & MPT_NVRAM_SYNC_MASK) >> MPT_NVRAM_SYNC_SHIFT;
 436                 spi_max_width(starget) = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
 437         } else {
 438                 spi_min_period(starget) = hd->ioc->spi_data.minSyncFactor;
 439                 spi_max_width(starget) = hd->ioc->spi_data.maxBusWidth;
 440         }
 441         spi_max_offset(starget) = hd->ioc->spi_data.maxSyncOffset;
 442
 443         spi_offset(starget) = 0;
 444         mptspi_write_width(starget, 0);
 445
 446         return 0;
 447 }
 448
 449 void
 450 mptspi_target_destroy(struct scsi_target *starget)
 451 {
 452         if (starget->hostdata)
 453                 kfree(starget->hostdata);
 454         starget->hostdata = NULL;
 455 }
 456
 457 static int mptspi_read_spi_device_pg0(struct scsi_target *starget,
 458                              struct _CONFIG_PAGE_SCSI_DEVICE_0 *pass_pg0)
 459 {
 460         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
 461         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
 462         struct _MPT_ADAPTER *ioc = hd->ioc;
 463         struct _CONFIG_PAGE_SCSI_DEVICE_0 *pg0;
 464         dma_addr_t pg0_dma;
 465         int size;
 466         struct _x_config_parms cfg;
 467         struct _CONFIG_PAGE_HEADER hdr;
 468         int err = -EBUSY;
 469
 470         /* No SPI parameters for RAID devices */
 471         if (starget->channel == 0 &&
 472             mptspi_is_raid(hd, starget->id))
 473                 return -1;
 474
 475         size = ioc->spi_data.sdp0length * 4;
 476         /*
 477         if (ioc->spi_data.sdp0length & 1)
 478                 size += size + 4;
 479         size += 2048;
 480         */
 481
 482         pg0 = dma_alloc_coherent(&ioc->pcidev->dev, size, &pg0_dma, GFP_KERNEL);
 483         if (pg0 == NULL) {
 484                 starget_printk(KERN_ERR, starget, "dma_alloc_coherent for parameters failed\n");
 485                 return -EINVAL;
 486         }
 487
 488         memset(&hdr, 0, sizeof(hdr));
 489
 490         hdr.PageVersion = ioc->spi_data.sdp0version;
 491         hdr.PageLength = ioc->spi_data.sdp0length;
 492         hdr.PageNumber = 0;
 493         hdr.PageType = MPI_CONFIG_PAGETYPE_SCSI_DEVICE;
 494
 495         memset(&cfg, 0, sizeof(cfg));
 496
 497         cfg.cfghdr.hdr = &hdr;
 498         cfg.physAddr = pg0_dma;
 499         cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
 500         cfg.dir = 0;
 501         cfg.pageAddr = starget->id;
 502
 503         if (mpt_config(ioc, &cfg)) {
 504                 starget_printk(KERN_ERR, starget, "mpt_config failed\n");
 505                 goto out_free;
 506         }
 507         err = 0;
 508         memcpy(pass_pg0, pg0, size);
 509
 510  out_free:
 511         dma_free_coherent(&ioc->pcidev->dev, size, pg0, pg0_dma);
 512         return err;
 513 }
 514
 515 static u32 mptspi_getRP(struct scsi_target *starget)
 516 {
 517         u32 nego = 0;
 518
 519         nego |= spi_iu(starget) ? MPI_SCSIDEVPAGE1_RP_IU : 0;
 520         nego |= spi_dt(starget) ? MPI_SCSIDEVPAGE1_RP_DT : 0;
 521         nego |= spi_qas(starget) ? MPI_SCSIDEVPAGE1_RP_QAS : 0;
 522         nego |= spi_hold_mcs(starget) ? MPI_SCSIDEVPAGE1_RP_HOLD_MCS : 0;
 523         nego |= spi_wr_flow(starget) ? MPI_SCSIDEVPAGE1_RP_WR_FLOW : 0;
 524         nego |= spi_rd_strm(starget) ? MPI_SCSIDEVPAGE1_RP_RD_STRM : 0;
 525         nego |= spi_rti(starget) ? MPI_SCSIDEVPAGE1_RP_RTI : 0;
 526         nego |= spi_pcomp_en(starget) ? MPI_SCSIDEVPAGE1_RP_PCOMP_EN : 0;
 527
 528         nego |= (spi_period(starget) <<  MPI_SCSIDEVPAGE1_RP_SHIFT_MIN_SYNC_PERIOD) & MPI_SCSIDEVPAGE1_RP_MIN_SYNC_PERIOD_MASK;
 529         nego |= (spi_offset(starget) << MPI_SCSIDEVPAGE1_RP_SHIFT_MAX_SYNC_OFFSET) & MPI_SCSIDEVPAGE1_RP_MAX_SYNC_OFFSET_MASK;
 530         nego |= spi_width(starget) ?  MPI_SCSIDEVPAGE1_RP_WIDE : 0;
 531
 532         return nego;
 533 }
 534
 535 static void mptspi_read_parameters(struct scsi_target *starget)
 536 {
 537         int nego;
 538         struct _CONFIG_PAGE_SCSI_DEVICE_0 pg0;
 539
 540         mptspi_read_spi_device_pg0(starget, &pg0);
 541
 542         nego = le32_to_cpu(pg0.NegotiatedParameters);
 543
 544         spi_iu(starget) = (nego & MPI_SCSIDEVPAGE0_NP_IU) ? 1 : 0;
 545         spi_dt(starget) = (nego & MPI_SCSIDEVPAGE0_NP_DT) ? 1 : 0;
 546         spi_qas(starget) = (nego & MPI_SCSIDEVPAGE0_NP_QAS) ? 1 : 0;
 547         spi_wr_flow(starget) = (nego & MPI_SCSIDEVPAGE0_NP_WR_FLOW) ? 1 : 0;
 548         spi_rd_strm(starget) = (nego & MPI_SCSIDEVPAGE0_NP_RD_STRM) ? 1 : 0;
 549         spi_rti(starget) = (nego & MPI_SCSIDEVPAGE0_NP_RTI) ? 1 : 0;
 550         spi_pcomp_en(starget) = (nego & MPI_SCSIDEVPAGE0_NP_PCOMP_EN) ? 1 : 0;
 551         spi_hold_mcs(starget) = (nego & MPI_SCSIDEVPAGE0_NP_HOLD_MCS) ? 1 : 0;
 552         spi_period(starget) = (nego & MPI_SCSIDEVPAGE0_NP_NEG_SYNC_PERIOD_MASK) >> MPI_SCSIDEVPAGE0_NP_SHIFT_SYNC_PERIOD;
 553         spi_offset(starget) = (nego & MPI_SCSIDEVPAGE0_NP_NEG_SYNC_OFFSET_MASK) >> MPI_SCSIDEVPAGE0_NP_SHIFT_SYNC_OFFSET;
 554         spi_width(starget) = (nego & MPI_SCSIDEVPAGE0_NP_WIDE) ? 1 : 0;
 555 }
 556
 557 static int
 558 mptscsih_quiesce_raid(MPT_SCSI_HOST *hd, int quiesce, u8 channel, u8 id)
 559 {
 560         MpiRaidActionRequest_t  *pReq;
 561         MPT_FRAME_HDR           *mf;
 562
 563         /* Get and Populate a free Frame
 564          */
 565         if ((mf = mpt_get_msg_frame(hd->ioc->InternalCtx, hd->ioc)) == NULL) {
 566                 ddvprintk((MYIOC_s_WARN_FMT "_do_raid: no msg frames!\n",
 567                                         hd->ioc->name));
 568                 return -EAGAIN;
 569         }
 570         pReq = (MpiRaidActionRequest_t *)mf;
 571         if (quiesce)
 572                 pReq->Action = MPI_RAID_ACTION_QUIESCE_PHYS_IO;
 573         else
 574                 pReq->Action = MPI_RAID_ACTION_ENABLE_PHYS_IO;
 575         pReq->Reserved1 = 0;
 576         pReq->ChainOffset = 0;
 577         pReq->Function = MPI_FUNCTION_RAID_ACTION;
 578         pReq->VolumeID = id;
 579         pReq->VolumeBus = channel;
 580         pReq->PhysDiskNum = 0;
 581         pReq->MsgFlags = 0;
 582         pReq->Reserved2 = 0;
 583         pReq->ActionDataWord = 0; /* Reserved for this action */
 584
 585         mpt_add_sge((char *)&pReq->ActionDataSGE,
 586                 MPT_SGE_FLAGS_SSIMPLE_READ | 0, (dma_addr_t) -1);
 587
 588         ddvprintk((MYIOC_s_INFO_FMT "RAID Volume action=%x channel=%d id=%d\n",
 589                         hd->ioc->name, pReq->Action, channel, id));
 590
 591         hd->pLocal = NULL;
 592         hd->timer.expires = jiffies + HZ*10; /* 10 second timeout */
 593         hd->scandv_wait_done = 0;
 594
 595         /* Save cmd pointer, for resource free if timeout or
 596          * FW reload occurs
 597          */
 598         hd->cmdPtr = mf;
 599
 600         add_timer(&hd->timer);
 601         mpt_put_msg_frame(hd->ioc->InternalCtx, hd->ioc, mf);
 602         wait_event(hd->scandv_waitq, hd->scandv_wait_done);
 603
 604         if ((hd->pLocal == NULL) || (hd->pLocal->completion != 0))
 605                 return -1;
 606
 607         return 0;
 608 }
 609
 610 static void mptspi_dv_device(struct _MPT_SCSI_HOST *hd,
 611                              struct scsi_device *sdev)
 612 {
 613         VirtTarget *vtarget = scsi_target(sdev)->hostdata;
 614
 615         /* no DV on RAID devices */
 616         if (sdev->channel == 0 &&
 617             mptspi_is_raid(hd, sdev->id))
 618                 return;
 619
 620         /* If this is a piece of a RAID, then quiesce first */
 621         if (sdev->channel == 1 &&
 622             mptscsih_quiesce_raid(hd, 1, vtarget->channel, vtarget->id) < 0) {
 623                 starget_printk(KERN_ERR, scsi_target(sdev),
 624                                "Integrated RAID quiesce failed\n");
 625                 return;
 626         }
 627
 628         spi_dv_device(sdev);
 629
 630         if (sdev->channel == 1 &&
 631             mptscsih_quiesce_raid(hd, 0, vtarget->channel, vtarget->id) < 0)
 632                 starget_printk(KERN_ERR, scsi_target(sdev),
 633                                "Integrated RAID resume failed\n");
 634
 635         mptspi_read_parameters(sdev->sdev_target);
 636         spi_display_xfer_agreement(sdev->sdev_target);
 637         mptspi_read_parameters(sdev->sdev_target);
 638 }
 639
 640 static int mptspi_slave_alloc(struct scsi_device *sdev)
 641 {
 642         MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *)sdev->host->hostdata;
 643         VirtTarget              *vtarget;
 644         VirtDevice              *vdev;
 645         struct scsi_target      *starget;
 646
 647         if (sdev->channel == 1 &&
 648                 mptscsih_is_phys_disk(hd->ioc, 0, sdev->id) == 0)
 649                         return -ENXIO;
 650
 651         vdev = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
 652         if (!vdev) {
 653                 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
 654                                 hd->ioc->name, sizeof(VirtDevice));
 655                 return -ENOMEM;
 656         }
 657
 658         vdev->lun = sdev->lun;
 659         sdev->hostdata = vdev;
 660
 661         starget = scsi_target(sdev);
 662         vtarget = starget->hostdata;
 663         vdev->vtarget = vtarget;
 664         vtarget->num_luns++;
 665
 666         if (sdev->channel == 1)
 667                 sdev->no_uld_attach = 1;
 668
 669         return 0;
 670 }
 671
 672 static int mptspi_slave_configure(struct scsi_device *sdev)
 673 {
 674         struct _MPT_SCSI_HOST *hd =
 675                 (struct _MPT_SCSI_HOST *)sdev->host->hostdata;
 676         VirtTarget *vtarget = scsi_target(sdev)->hostdata;
 677         int ret = mptscsih_slave_configure(sdev);
 678
 679         if (ret)
 680                 return ret;
 681
 682         mptspi_initTarget(hd, vtarget, sdev);
 683
 684         if ((sdev->channel == 1 ||
 685              !(mptspi_is_raid(hd, sdev->id))) &&
 686             !spi_initial_dv(sdev->sdev_target))
 687                 mptspi_dv_device(hd, sdev);
 688
 689         return 0;
 690 }
 691
 692 static int
 693 mptspi_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
 694 {
 695         struct _MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *) SCpnt->device->host->hostdata;
 696         VirtDevice      *vdev = SCpnt->device->hostdata;
 697
 698         if (!vdev || !vdev->vtarget) {
 699                 SCpnt->result = DID_NO_CONNECT << 16;
 700                 done(SCpnt);
 701                 return 0;
 702         }
 703
 704         if (SCpnt->device->channel == 1 &&
 705                 mptscsih_is_phys_disk(hd->ioc, 0, SCpnt->device->id) == 0) {
 706                 SCpnt->result = DID_NO_CONNECT << 16;
 707                 done(SCpnt);
 708                 return 0;
 709         }
 710
 711         return mptscsih_qcmd(SCpnt,done);
 712 }
 713
 714 static void mptspi_slave_destroy(struct scsi_device *sdev)
 715 {
 716         struct scsi_target *starget = scsi_target(sdev);
 717         VirtTarget *vtarget = starget->hostdata;
 718         VirtDevice *vdevice = sdev->hostdata;
 719
 720         /* Will this be the last lun on a non-raid device? */
 721         if (vtarget->num_luns == 1 && vdevice->configured_lun) {
 722                 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 723
 724                 /* Async Narrow */
 725                 pg1.RequestedParameters = 0;
 726                 pg1.Reserved = 0;
 727                 pg1.Configuration = 0;
 728
 729                 mptspi_write_spi_device_pg1(starget, &pg1);
 730         }
 731
 732         mptscsih_slave_destroy(sdev);
 733 }
 734
 735 static struct scsi_host_template mptspi_driver_template = {
 736         .module                         = THIS_MODULE,
 737         .proc_name                      = "mptspi",
 738         .proc_info                      = mptscsih_proc_info,
 739         .name                           = "MPT SPI Host",
 740         .info                           = mptscsih_info,
 741         .queuecommand                   = mptspi_qcmd,
 742         .target_alloc                   = mptspi_target_alloc,
 743         .slave_alloc                    = mptspi_slave_alloc,
 744         .slave_configure                = mptspi_slave_configure,
 745         .target_destroy                 = mptspi_target_destroy,
 746         .slave_destroy                  = mptspi_slave_destroy,
 747         .change_queue_depth             = mptscsih_change_queue_depth,
 748         .eh_abort_handler               = mptscsih_abort,
 749         .eh_device_reset_handler        = mptscsih_dev_reset,
 750         .eh_bus_reset_handler           = mptscsih_bus_reset,
 751         .eh_host_reset_handler          = mptscsih_host_reset,
 752         .bios_param                     = mptscsih_bios_param,
 753         .can_queue                      = MPT_SCSI_CAN_QUEUE,
 754         .this_id                        = -1,
 755         .sg_tablesize                   = MPT_SCSI_SG_DEPTH,
 756         .max_sectors                    = 8192,
 757         .cmd_per_lun                    = 7,
 758         .use_clustering                 = ENABLE_CLUSTERING,
 759 };
 760
 761 static int mptspi_write_spi_device_pg1(struct scsi_target *starget,
 762                                struct _CONFIG_PAGE_SCSI_DEVICE_1 *pass_pg1)
 763 {
 764         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
 765         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
 766         struct _MPT_ADAPTER *ioc = hd->ioc;
 767         struct _CONFIG_PAGE_SCSI_DEVICE_1 *pg1;
 768         dma_addr_t pg1_dma;
 769         int size;
 770         struct _x_config_parms cfg;
 771         struct _CONFIG_PAGE_HEADER hdr;
 772         int err = -EBUSY;
 773
 774         /* don't allow updating nego parameters on RAID devices */
 775         if (starget->channel == 0 &&
 776             mptspi_is_raid(hd, starget->id))
 777                 return -1;
 778
 779         size = ioc->spi_data.sdp1length * 4;
 780
 781         pg1 = dma_alloc_coherent(&ioc->pcidev->dev, size, &pg1_dma, GFP_KERNEL);
 782         if (pg1 == NULL) {
 783                 starget_printk(KERN_ERR, starget, "dma_alloc_coherent for parameters failed\n");
 784                 return -EINVAL;
 785         }
 786
 787         memset(&hdr, 0, sizeof(hdr));
 788
 789         hdr.PageVersion = ioc->spi_data.sdp1version;
 790         hdr.PageLength = ioc->spi_data.sdp1length;
 791         hdr.PageNumber = 1;
 792         hdr.PageType = MPI_CONFIG_PAGETYPE_SCSI_DEVICE;
 793
 794         memset(&cfg, 0, sizeof(cfg));
 795
 796         cfg.cfghdr.hdr = &hdr;
 797         cfg.physAddr = pg1_dma;
 798         cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
 799         cfg.dir = 1;
 800         cfg.pageAddr = starget->id;
 801
 802         memcpy(pg1, pass_pg1, size);
 803
 804         pg1->Header.PageVersion = hdr.PageVersion;
 805         pg1->Header.PageLength = hdr.PageLength;
 806         pg1->Header.PageNumber = hdr.PageNumber;
 807         pg1->Header.PageType = hdr.PageType;
 808
 809         if (mpt_config(ioc, &cfg)) {
 810                 starget_printk(KERN_ERR, starget, "mpt_config failed\n");
 811                 goto out_free;
 812         }
 813         err = 0;
 814
 815  out_free:
 816         dma_free_coherent(&ioc->pcidev->dev, size, pg1, pg1_dma);
 817         return err;
 818 }
 819
 820 static void mptspi_write_offset(struct scsi_target *starget, int offset)
 821 {
 822         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 823         u32 nego;
 824
 825         if (offset < 0)
 826                 offset = 0;
 827
 828         if (offset > 255)
 829                 offset = 255;
 830
 831         if (spi_offset(starget) == -1)
 832                 mptspi_read_parameters(starget);
 833
 834         spi_offset(starget) = offset;
 835
 836         nego = mptspi_getRP(starget);
 837
 838         pg1.RequestedParameters = cpu_to_le32(nego);
 839         pg1.Reserved = 0;
 840         pg1.Configuration = 0;
 841
 842         mptspi_write_spi_device_pg1(starget, &pg1);
 843 }
 844
 845 static void mptspi_write_period(struct scsi_target *starget, int period)
 846 {
 847         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 848         u32 nego;
 849
 850         if (period < 8)
 851                 period = 8;
 852
 853         if (period > 255)
 854                 period = 255;
 855
 856         if (spi_period(starget) == -1)
 857                 mptspi_read_parameters(starget);
 858
 859         if (period == 8) {
 860                 spi_iu(starget) = 1;
 861                 spi_dt(starget) = 1;
 862         } else if (period == 9) {
 863                 spi_dt(starget) = 1;
 864         }
 865
 866         spi_period(starget) = period;
 867
 868         nego = mptspi_getRP(starget);
 869
 870         pg1.RequestedParameters = cpu_to_le32(nego);
 871         pg1.Reserved = 0;
 872         pg1.Configuration = 0;
 873
 874         mptspi_write_spi_device_pg1(starget, &pg1);
 875 }
 876
 877 static void mptspi_write_dt(struct scsi_target *starget, int dt)
 878 {
 879         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 880         u32 nego;
 881
 882         if (spi_period(starget) == -1)
 883                 mptspi_read_parameters(starget);
 884
 885         if (!dt && spi_period(starget) < 10)
 886                 spi_period(starget) = 10;
 887
 888         spi_dt(starget) = dt;
 889
 890         nego = mptspi_getRP(starget);
 891
 892
 893         pg1.RequestedParameters = cpu_to_le32(nego);
 894         pg1.Reserved = 0;
 895         pg1.Configuration = 0;
 896
 897         mptspi_write_spi_device_pg1(starget, &pg1);
 898 }
 899
 900 static void mptspi_write_iu(struct scsi_target *starget, int iu)
 901 {
 902         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 903         u32 nego;
 904
 905         if (spi_period(starget) == -1)
 906                 mptspi_read_parameters(starget);
 907
 908         if (!iu && spi_period(starget) < 9)
 909                 spi_period(starget) = 9;
 910
 911         spi_iu(starget) = iu;
 912
 913         nego = mptspi_getRP(starget);
 914
 915         pg1.RequestedParameters = cpu_to_le32(nego);
 916         pg1.Reserved = 0;
 917         pg1.Configuration = 0;
 918
 919         mptspi_write_spi_device_pg1(starget, &pg1);
 920 }
 921
 922 #define MPTSPI_SIMPLE_TRANSPORT_PARM(parm)                              \
 923 static void mptspi_write_##parm(struct scsi_target *starget, int parm)\
 924 {                                                                       \
 925         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;                          \
 926         u32 nego;                                                       \
 927                                                                         \
 928         spi_##parm(starget) = parm;                                     \
 929                                                                         \
 930         nego = mptspi_getRP(starget);                                   \
 931                                                                         \
 932         pg1.RequestedParameters = cpu_to_le32(nego);                    \
 933         pg1.Reserved = 0;                                               \
 934         pg1.Configuration = 0;                                          \
 935                                                                         \
 936         mptspi_write_spi_device_pg1(starget, &pg1);                             \
 937 }
 938
 939 MPTSPI_SIMPLE_TRANSPORT_PARM(rd_strm)
 940 MPTSPI_SIMPLE_TRANSPORT_PARM(wr_flow)
 941 MPTSPI_SIMPLE_TRANSPORT_PARM(rti)
 942 MPTSPI_SIMPLE_TRANSPORT_PARM(hold_mcs)
 943 MPTSPI_SIMPLE_TRANSPORT_PARM(pcomp_en)
 944
 945 static void mptspi_write_qas(struct scsi_target *starget, int qas)
 946 {
 947         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 948         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
 949         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
 950         VirtTarget *vtarget = starget->hostdata;
 951         u32 nego;
 952
 953         if ((vtarget->negoFlags & MPT_TARGET_NO_NEGO_QAS) ||
 954             hd->ioc->spi_data.noQas)
 955                 spi_qas(starget) = 0;
 956         else
 957                 spi_qas(starget) = qas;
 958
 959         nego = mptspi_getRP(starget);
 960
 961         pg1.RequestedParameters = cpu_to_le32(nego);
 962         pg1.Reserved = 0;
 963         pg1.Configuration = 0;
 964
 965         mptspi_write_spi_device_pg1(starget, &pg1);
 966 }
 967
 968 static void mptspi_write_width(struct scsi_target *starget, int width)
 969 {
 970         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 971         u32 nego;
 972
 973         if (!width) {
 974                 spi_dt(starget) = 0;
 975                 if (spi_period(starget) < 10)
 976                         spi_period(starget) = 10;
 977         }
 978
 979         spi_width(starget) = width;
 980
 981         nego = mptspi_getRP(starget);
 982
 983         pg1.RequestedParameters = cpu_to_le32(nego);
 984         pg1.Reserved = 0;
 985         pg1.Configuration = 0;
 986
 987         mptspi_write_spi_device_pg1(starget, &pg1);
 988 }
 989
 990 struct work_queue_wrapper {
 991         struct work_struct      work;
 992         struct _MPT_SCSI_HOST   *hd;
 993         int                     disk;
 994 };
 995
 996 static void mpt_work_wrapper(struct work_struct *work)
 997 {
 998         struct work_queue_wrapper *wqw =
 999                 container_of(work, struct work_queue_wrapper, work);
1000         struct _MPT_SCSI_HOST *hd = wqw->hd;
1001         struct Scsi_Host *shost = hd->ioc->sh;
1002         struct scsi_device *sdev;
1003         int disk = wqw->disk;
1004         struct _CONFIG_PAGE_IOC_3 *pg3;
1005
1006         kfree(wqw);
1007
1008         mpt_findImVolumes(hd->ioc);
1009         pg3 = hd->ioc->raid_data.pIocPg3;
1010         if (!pg3)
1011                 return;
1012
1013         shost_for_each_device(sdev,shost) {
1014                 struct scsi_target *starget = scsi_target(sdev);
1015                 VirtTarget *vtarget = starget->hostdata;
1016
1017                 /* only want to search RAID components */
1018                 if (sdev->channel != 1)
1019                         continue;
1020
1021                 /* The id is the raid PhysDiskNum, even if
1022                  * starget->id is the actual target address */
1023                 if(vtarget->id != disk)
1024                         continue;
1025
1026                 starget_printk(KERN_INFO, vtarget->starget,
1027                                "Integrated RAID requests DV of new device\n");
1028                 mptspi_dv_device(hd, sdev);
1029         }
1030         shost_printk(KERN_INFO, shost,
1031                      "Integrated RAID detects new device %d\n", disk);
1032         scsi_scan_target(&hd->ioc->sh->shost_gendev, 1, disk, 0, 1);
1033 }
1034
1035
1036 static void mpt_dv_raid(struct _MPT_SCSI_HOST *hd, int disk)
1037 {
1038         struct work_queue_wrapper *wqw = kmalloc(sizeof(*wqw), GFP_ATOMIC);
1039
1040         if (!wqw) {
1041                 shost_printk(KERN_ERR, hd->ioc->sh,
1042                              "Failed to act on RAID event for physical disk %d\n",
1043                            disk);
1044                 return;
1045         }
1046         INIT_WORK(&wqw->work, mpt_work_wrapper);
1047         wqw->hd = hd;
1048         wqw->disk = disk;
1049
1050         schedule_work(&wqw->work);
1051 }
1052
1053 static int
1054 mptspi_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1055 {
1056         u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1057         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
1058
1059         if (hd && event ==  MPI_EVENT_INTEGRATED_RAID) {
1060                 int reason
1061                         = (le32_to_cpu(pEvReply->Data[0]) & 0x00FF0000) >> 16;
1062
1063                 if (reason == MPI_EVENT_RAID_RC_DOMAIN_VAL_NEEDED) {
1064                         int disk = (le32_to_cpu(pEvReply->Data[0]) & 0xFF000000) >> 24;
1065                         mpt_dv_raid(hd, disk);
1066                 }
1067         }
1068         return mptscsih_event_process(ioc, pEvReply);
1069 }
1070
1071 static int
1072 mptspi_deny_binding(struct scsi_target *starget)
1073 {
1074         struct _MPT_SCSI_HOST *hd =
1075                 (struct _MPT_SCSI_HOST *)dev_to_shost(starget->dev.parent)->hostdata;
1076         return ((mptspi_is_raid(hd, starget->id)) &&
1077                 starget->channel == 0) ? 1 : 0;
1078 }
1079
1080 static struct spi_function_template mptspi_transport_functions = {
1081         .get_offset     = mptspi_read_parameters,
1082         .set_offset     = mptspi_write_offset,
1083         .show_offset    = 1,
1084         .get_period     = mptspi_read_parameters,
1085         .set_period     = mptspi_write_period,
1086         .show_period    = 1,
1087         .get_width      = mptspi_read_parameters,
1088         .set_width      = mptspi_write_width,
1089         .show_width     = 1,
1090         .get_iu         = mptspi_read_parameters,
1091         .set_iu         = mptspi_write_iu,
1092         .show_iu        = 1,
1093         .get_dt         = mptspi_read_parameters,
1094         .set_dt         = mptspi_write_dt,
1095         .show_dt        = 1,
1096         .get_qas        = mptspi_read_parameters,
1097         .set_qas        = mptspi_write_qas,
1098         .show_qas       = 1,
1099         .get_wr_flow    = mptspi_read_parameters,
1100         .set_wr_flow    = mptspi_write_wr_flow,
1101         .show_wr_flow   = 1,
1102         .get_rd_strm    = mptspi_read_parameters,
1103         .set_rd_strm    = mptspi_write_rd_strm,
1104         .show_rd_strm   = 1,
1105         .get_rti        = mptspi_read_parameters,
1106         .set_rti        = mptspi_write_rti,
1107         .show_rti       = 1,
1108         .get_pcomp_en   = mptspi_read_parameters,
1109         .set_pcomp_en   = mptspi_write_pcomp_en,
1110         .show_pcomp_en  = 1,
1111         .get_hold_mcs   = mptspi_read_parameters,
1112         .set_hold_mcs   = mptspi_write_hold_mcs,
1113         .show_hold_mcs  = 1,
1114         .deny_binding   = mptspi_deny_binding,
1115 };
1116
1117 /****************************************************************************
1118  * Supported hardware
1119  */
1120
1121 static struct pci_device_id mptspi_pci_table[] = {
1122         { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_53C1030,
1123                 PCI_ANY_ID, PCI_ANY_ID },
1124         { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_53C1035,
1125                 PCI_ANY_ID, PCI_ANY_ID },
1126         {0}     /* Terminating entry */
1127 };
1128 MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
1129
1130
1131 /*
1132  * renegotiate for a given target
1133  */
1134 static void
1135 mptspi_dv_renegotiate_work(struct work_struct *work)
1136 {
1137         struct work_queue_wrapper *wqw =
1138                 container_of(work, struct work_queue_wrapper, work);
1139         struct _MPT_SCSI_HOST *hd = wqw->hd;
1140         struct scsi_device *sdev;
1141
1142         kfree(wqw);
1143
1144         shost_for_each_device(sdev, hd->ioc->sh)
1145                 mptspi_dv_device(hd, sdev);
1146 }
1147
1148 static void
1149 mptspi_dv_renegotiate(struct _MPT_SCSI_HOST *hd)
1150 {
1151         struct work_queue_wrapper *wqw = kmalloc(sizeof(*wqw), GFP_ATOMIC);
1152
1153         if (!wqw)
1154                 return;
1155
1156         INIT_WORK(&wqw->work, mptspi_dv_renegotiate_work);
1157         wqw->hd = hd;
1158
1159         schedule_work(&wqw->work);
1160 }
1161
1162 /*
1163  * spi module reset handler
1164  */
1165 static int
1166 mptspi_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1167 {
1168         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
1169         int rc;
1170
1171         rc = mptscsih_ioc_reset(ioc, reset_phase);
1172
1173         if (reset_phase == MPT_IOC_POST_RESET)
1174                 mptspi_dv_renegotiate(hd);
1175
1176         return rc;
1177 }
1178
1179 #ifdef CONFIG_PM
1180 /*
1181  * spi module resume handler
1182  */
1183 static int
1184 mptspi_resume(struct pci_dev *pdev)
1185 {
1186         MPT_ADAPTER     *ioc = pci_get_drvdata(pdev);
1187         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
1188         int rc;
1189
1190         rc = mptscsih_resume(pdev);
1191         mptspi_dv_renegotiate(hd);
1192
1193         return rc;
1194 }
1195 #endif
1196
1197 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1198 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1199 /*
1200  *      mptspi_probe - Installs scsi devices per bus.
1201  *      @pdev: Pointer to pci_dev structure
1202  *
1203  *      Returns 0 for success, non-zero for failure.
1204  *
1205  */
1206 static int
1207 mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1208 {
1209         struct Scsi_Host        *sh;
1210         MPT_SCSI_HOST           *hd;
1211         MPT_ADAPTER             *ioc;
1212         unsigned long            flags;
1213         int                      ii;
1214         int                      numSGE = 0;
1215         int                      scale;
1216         int                      ioc_cap;
1217         int                     error=0;
1218         int                     r;
1219
1220         if ((r = mpt_attach(pdev,id)) != 0)
1221                 return r;
1222
1223         ioc = pci_get_drvdata(pdev);
1224         ioc->DoneCtx = mptspiDoneCtx;
1225         ioc->TaskCtx = mptspiTaskCtx;
1226         ioc->InternalCtx = mptspiInternalCtx;
1227
1228         /*  Added sanity check on readiness of the MPT adapter.
1229          */
1230         if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1231                 printk(MYIOC_s_WARN_FMT
1232                   "Skipping because it's not operational!\n",
1233                   ioc->name);
1234                 error = -ENODEV;
1235                 goto out_mptspi_probe;
1236         }
1237
1238         if (!ioc->active) {
1239                 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1240                   ioc->name);
1241                 error = -ENODEV;
1242                 goto out_mptspi_probe;
1243         }
1244
1245         /*  Sanity check - ensure at least 1 port is INITIATOR capable
1246          */
1247         ioc_cap = 0;
1248         for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1249                 if (ioc->pfacts[ii].ProtocolFlags &
1250                     MPI_PORTFACTS_PROTOCOL_INITIATOR)
1251                         ioc_cap ++;
1252         }
1253
1254         if (!ioc_cap) {
1255                 printk(MYIOC_s_WARN_FMT
1256                         "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1257                         ioc->name, ioc);
1258                 return 0;
1259         }
1260
1261         sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST));
1262
1263         if (!sh) {
1264                 printk(MYIOC_s_WARN_FMT
1265                         "Unable to register controller with SCSI subsystem\n",
1266                         ioc->name);
1267                 error = -1;
1268                 goto out_mptspi_probe;
1269         }
1270
1271         spin_lock_irqsave(&ioc->FreeQlock, flags);
1272
1273         /* Attach the SCSI Host to the IOC structure
1274          */
1275         ioc->sh = sh;
1276
1277         sh->io_port = 0;
1278         sh->n_io_port = 0;
1279         sh->irq = 0;
1280
1281         /* set 16 byte cdb's */
1282         sh->max_cmd_len = 16;
1283
1284         /* Yikes!  This is important!
1285          * Otherwise, by default, linux
1286          * only scans target IDs 0-7!
1287          * pfactsN->MaxDevices unreliable
1288          * (not supported in early
1289          *      versions of the FW).
1290          * max_id = 1 + actual max id,
1291          * max_lun = 1 + actual last lun,
1292          *      see hosts.h :o(
1293          */
1294         sh->max_id = ioc->devices_per_bus;
1295
1296         sh->max_lun = MPT_LAST_LUN + 1;
1297         /*
1298          * If RAID Firmware Detected, setup virtual channel
1299          */
1300         if ((ioc->facts.ProductID & MPI_FW_HEADER_PID_PROD_MASK)
1301             > MPI_FW_HEADER_PID_PROD_TARGET_SCSI)
1302                 sh->max_channel = 1;
1303         else
1304                 sh->max_channel = 0;
1305         sh->this_id = ioc->pfacts[0].PortSCSIID;
1306
1307         /* Required entry.
1308          */
1309         sh->unique_id = ioc->id;
1310
1311         /* Verify that we won't exceed the maximum
1312          * number of chain buffers
1313          * We can optimize:  ZZ = req_sz/sizeof(SGE)
1314          * For 32bit SGE's:
1315          *  numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1316          *               + (req_sz - 64)/sizeof(SGE)
1317          * A slightly different algorithm is required for
1318          * 64bit SGEs.
1319          */
1320         scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
1321         if (sizeof(dma_addr_t) == sizeof(u64)) {
1322                 numSGE = (scale - 1) *
1323                   (ioc->facts.MaxChainDepth-1) + scale +
1324                   (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
1325                   sizeof(u32));
1326         } else {
1327                 numSGE = 1 + (scale - 1) *
1328                   (ioc->facts.MaxChainDepth-1) + scale +
1329                   (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
1330                   sizeof(u32));
1331         }
1332
1333         if (numSGE < sh->sg_tablesize) {
1334                 /* Reset this value */
1335                 dprintk((MYIOC_s_INFO_FMT
1336                   "Resetting sg_tablesize to %d from %d\n",
1337                   ioc->name, numSGE, sh->sg_tablesize));
1338                 sh->sg_tablesize = numSGE;
1339         }
1340
1341         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1342
1343         hd = (MPT_SCSI_HOST *) sh->hostdata;
1344         hd->ioc = ioc;
1345
1346         /* SCSI needs scsi_cmnd lookup table!
1347          * (with size equal to req_depth*PtrSz!)
1348          */
1349         hd->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
1350         if (!hd->ScsiLookup) {
1351                 error = -ENOMEM;
1352                 goto out_mptspi_probe;
1353         }
1354
1355         dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p\n",
1356                  ioc->name, hd->ScsiLookup));
1357
1358         /* Clear the TM flags
1359          */
1360         hd->tmPending = 0;
1361         hd->tmState = TM_STATE_NONE;
1362         hd->resetPending = 0;
1363         hd->abortSCpnt = NULL;
1364
1365         /* Clear the pointer used to store
1366          * single-threaded commands, i.e., those
1367          * issued during a bus scan, dv and
1368          * configuration pages.
1369          */
1370         hd->cmdPtr = NULL;
1371
1372         /* Initialize this SCSI Hosts' timers
1373          * To use, set the timer expires field
1374          * and add_timer
1375          */
1376         init_timer(&hd->timer);
1377         hd->timer.data = (unsigned long) hd;
1378         hd->timer.function = mptscsih_timer_expired;
1379
1380         ioc->spi_data.Saf_Te = mpt_saf_te;
1381
1382         hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
1383         ddvprintk((MYIOC_s_INFO_FMT
1384                 "saf_te %x\n",
1385                 ioc->name,
1386                 mpt_saf_te));
1387         ioc->spi_data.noQas = 0;
1388
1389         init_waitqueue_head(&hd->scandv_waitq);
1390         hd->scandv_wait_done = 0;
1391         hd->last_queue_full = 0;
1392
1393         /* Some versions of the firmware don't support page 0; without
1394          * that we can't get the parameters */
1395         if (hd->ioc->spi_data.sdp0length != 0)
1396                 sh->transportt = mptspi_transport_template;
1397
1398         error = scsi_add_host (sh, &ioc->pcidev->dev);
1399         if(error) {
1400                 dprintk((KERN_ERR MYNAM
1401                   "scsi_add_host failed\n"));
1402                 goto out_mptspi_probe;
1403         }
1404
1405         /*
1406          * issue internal bus reset
1407          */
1408         if (ioc->spi_data.bus_reset)
1409                 mptscsih_TMHandler(hd,
1410                     MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
1411                     0, 0, 0, 0, 5);
1412
1413         scsi_scan_host(sh);
1414         return 0;
1415
1416 out_mptspi_probe:
1417
1418         mptscsih_remove(pdev);
1419         return error;
1420 }
1421
1422 static struct pci_driver mptspi_driver = {
1423         .name           = "mptspi",
1424         .id_table       = mptspi_pci_table,
1425         .probe          = mptspi_probe,
1426         .remove         = __devexit_p(mptscsih_remove),
1427         .shutdown       = mptscsih_shutdown,
1428 #ifdef CONFIG_PM
1429         .suspend        = mptscsih_suspend,
1430         .resume         = mptspi_resume,
1431 #endif
1432 };
1433
1434 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1435 /**
1436  *      mptspi_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1437  *
1438  *      Returns 0 for success, non-zero for failure.
1439  */
1440 static int __init
1441 mptspi_init(void)
1442 {
1443         show_mptmod_ver(my_NAME, my_VERSION);
1444
1445         mptspi_transport_template = spi_attach_transport(&mptspi_transport_functions);
1446         if (!mptspi_transport_template)
1447                 return -ENODEV;
1448
1449         mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER);
1450         mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER);
1451         mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER);
1452
1453         if (mpt_event_register(mptspiDoneCtx, mptspi_event_process) == 0) {
1454                 devtverboseprintk((KERN_INFO MYNAM
1455                   ": Registered for IOC event notifications\n"));
1456         }
1457
1458         if (mpt_reset_register(mptspiDoneCtx, mptspi_ioc_reset) == 0) {
1459                 dprintk((KERN_INFO MYNAM
1460                   ": Registered for IOC reset notifications\n"));
1461         }
1462
1463         return pci_register_driver(&mptspi_driver);
1464 }
1465
1466 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1467 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1468 /**
1469  *      mptspi_exit - Unregisters MPT adapter(s)
1470  */
1471 static void __exit
1472 mptspi_exit(void)
1473 {
1474         pci_unregister_driver(&mptspi_driver);
1475
1476         mpt_reset_deregister(mptspiDoneCtx);
1477         dprintk((KERN_INFO MYNAM
1478           ": Deregistered for IOC reset notifications\n"));
1479
1480         mpt_event_deregister(mptspiDoneCtx);
1481         dprintk((KERN_INFO MYNAM
1482           ": Deregistered for IOC event notifications\n"));
1483
1484         mpt_deregister(mptspiInternalCtx);
1485         mpt_deregister(mptspiTaskCtx);
1486         mpt_deregister(mptspiDoneCtx);
1487         spi_release_transport(mptspi_transport_template);
1488 }
1489
1490 module_init(mptspi_init);
1491 module_exit(mptspi_exit);