drivers/message/fusion/mptspi.c

   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:DL-MPTFusionLinux@lsi.com)
   8  *
   9  */
  10 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
  11 /*
  12     This program is free software; you can redistribute it and/or modify
  13     it under the terms of the GNU General Public License as published by
  14     the Free Software Foundation; version 2 of the License.
  15
  16     This program is distributed in the hope that it will be useful,
  17     but WITHOUT ANY WARRANTY; without even the implied warranty of
  18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19     GNU General Public License for more details.
  20
  21     NO WARRANTY
  22     THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  23     CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  24     LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  25     MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  26     solely responsible for determining the appropriateness of using and
  27     distributing the Program and assumes all risks associated with its
  28     exercise of rights under this Agreement, including but not limited to
  29     the risks and costs of program errors, damage to or loss of data,
  30     programs or equipment, and unavailability or interruption of operations.
  31
  32     DISCLAIMER OF LIABILITY
  33     NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  34     DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  35     DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  36     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  37     TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  38     USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  39     HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  40
  41     You should have received a copy of the GNU General Public License
  42     along with this program; if not, write to the Free Software
  43     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  44 */
  45 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
  46
  47 #include <linux/module.h>
  48 #include <linux/kernel.h>
  49 #include <linux/init.h>
  50 #include <linux/errno.h>
  51 #include <linux/kdev_t.h>
  52 #include <linux/blkdev.h>
  53 #include <linux/delay.h>        /* for mdelay */
  54 #include <linux/interrupt.h>    /* needed for in_interrupt() proto */
  55 #include <linux/reboot.h>       /* notifier code */
  56 #include <linux/workqueue.h>
  57 #include <linux/raid_class.h>
  58
  59 #include <scsi/scsi.h>
  60 #include <scsi/scsi_cmnd.h>
  61 #include <scsi/scsi_device.h>
  62 #include <scsi/scsi_host.h>
  63 #include <scsi/scsi_tcq.h>
  64 #include <scsi/scsi_transport.h>
  65 #include <scsi/scsi_transport_spi.h>
  66 #include <scsi/scsi_dbg.h>
  67
  68 #include "mptbase.h"
  69 #include "mptscsih.h"
  70
  71 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
  72 #define my_NAME         "Fusion MPT SPI Host driver"
  73 #define my_VERSION      MPT_LINUX_VERSION_COMMON
  74 #define MYNAM           "mptspi"
  75
  76 MODULE_AUTHOR(MODULEAUTHOR);
  77 MODULE_DESCRIPTION(my_NAME);
  78 MODULE_LICENSE("GPL");
  79 MODULE_VERSION(my_VERSION);
  80
  81 /* Command line args */
  82 static int mpt_saf_te = MPTSCSIH_SAF_TE;
  83 module_param(mpt_saf_te, int, 0);
  84 MODULE_PARM_DESC(mpt_saf_te, " Force enabling SEP Processor: enable=1  (default=MPTSCSIH_SAF_TE=0)");
  85
  86 static void mptspi_write_offset(struct scsi_target *, int);
  87 static void mptspi_write_width(struct scsi_target *, int);
  88 static int mptspi_write_spi_device_pg1(struct scsi_target *,
  89                                        struct _CONFIG_PAGE_SCSI_DEVICE_1 *);
  90
  91 static struct scsi_transport_template *mptspi_transport_template = NULL;
  92
  93 static int      mptspiDoneCtx = -1;
  94 static int      mptspiTaskCtx = -1;
  95 static int      mptspiInternalCtx = -1; /* Used only for internal commands */
  96
  97 /**
  98  *      mptspi_setTargetNegoParms  - Update the target negotiation parameters
  99  *      @hd: Pointer to a SCSI Host Structure
 100  *      @target: per target private data
 101  *      @sdev: SCSI device
 102  *
 103  *      Update the target negotiation parameters based on the the Inquiry
 104  *      data, adapter capabilities, and NVRAM settings.
 105  **/
 106 static void
 107 mptspi_setTargetNegoParms(MPT_SCSI_HOST *hd, VirtTarget *target,
 108                             struct scsi_device *sdev)
 109 {
 110         SpiCfgData *pspi_data = &hd->ioc->spi_data;
 111         int  id = (int) target->id;
 112         int  nvram;
 113         u8 width = MPT_NARROW;
 114         u8 factor = MPT_ASYNC;
 115         u8 offset = 0;
 116         u8 nfactor;
 117         u8 noQas = 1;
 118
 119         target->negoFlags = pspi_data->noQas;
 120
 121         if (sdev->scsi_level < SCSI_2) {
 122                 width = 0;
 123                 factor = MPT_ULTRA2;
 124                 offset = pspi_data->maxSyncOffset;
 125                 target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
 126         } else {
 127                 if (scsi_device_wide(sdev))
 128                         width = 1;
 129
 130                 if (scsi_device_sync(sdev)) {
 131                         factor = pspi_data->minSyncFactor;
 132                         if (!scsi_device_dt(sdev))
 133                                         factor = MPT_ULTRA2;
 134                         else {
 135                                 if (!scsi_device_ius(sdev) &&
 136                                     !scsi_device_qas(sdev))
 137                                         factor = MPT_ULTRA160;
 138                                 else {
 139                                         factor = MPT_ULTRA320;
 140                                         if (scsi_device_qas(sdev)) {
 141                                                 ddvprintk((KERN_INFO "Enabling QAS due to byte56=%02x on id=%d!\n", scsi_device_qas(sdev), id));
 142                                                 noQas = 0;
 143                                         }
 144                                         if (sdev->type == TYPE_TAPE &&
 145                                             scsi_device_ius(sdev))
 146                                                 target->negoFlags |= MPT_TAPE_NEGO_IDP;
 147                                 }
 148                         }
 149                         offset = pspi_data->maxSyncOffset;
 150
 151                         /* If RAID, never disable QAS
 152                          * else if non RAID, do not disable
 153                          *   QAS if bit 1 is set
 154                          * bit 1 QAS support, non-raid only
 155                          * bit 0 IU support
 156                          */
 157                         if (target->raidVolume == 1)
 158                                 noQas = 0;
 159                 } else {
 160                         factor = MPT_ASYNC;
 161                         offset = 0;
 162                 }
 163         }
 164
 165         if (!sdev->tagged_supported)
 166                 target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
 167
 168         /* Update tflags based on NVRAM settings. (SCSI only)
 169          */
 170         if (pspi_data->nvram && (pspi_data->nvram[id] != MPT_HOST_NVRAM_INVALID)) {
 171                 nvram = pspi_data->nvram[id];
 172                 nfactor = (nvram & MPT_NVRAM_SYNC_MASK) >> 8;
 173
 174                 if (width)
 175                         width = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
 176
 177                 if (offset > 0) {
 178                         /* Ensure factor is set to the
 179                          * maximum of: adapter, nvram, inquiry
 180                          */
 181                         if (nfactor) {
 182                                 if (nfactor < pspi_data->minSyncFactor )
 183                                         nfactor = pspi_data->minSyncFactor;
 184
 185                                 factor = max(factor, nfactor);
 186                                 if (factor == MPT_ASYNC)
 187                                         offset = 0;
 188                         } else {
 189                                 offset = 0;
 190                                 factor = MPT_ASYNC;
 191                 }
 192                 } else {
 193                         factor = MPT_ASYNC;
 194                 }
 195         }
 196
 197         /* Make sure data is consistent
 198          */
 199         if ((!width) && (factor < MPT_ULTRA2))
 200                 factor = MPT_ULTRA2;
 201
 202         /* Save the data to the target structure.
 203          */
 204         target->minSyncFactor = factor;
 205         target->maxOffset = offset;
 206         target->maxWidth = width;
 207
 208         target->tflags |= MPT_TARGET_FLAGS_VALID_NEGO;
 209
 210         /* Disable unused features.
 211          */
 212         if (!width)
 213                 target->negoFlags |= MPT_TARGET_NO_NEGO_WIDE;
 214
 215         if (!offset)
 216                 target->negoFlags |= MPT_TARGET_NO_NEGO_SYNC;
 217
 218         if ( factor > MPT_ULTRA320 )
 219                 noQas = 0;
 220
 221         if (noQas && (pspi_data->noQas == 0)) {
 222                 pspi_data->noQas |= MPT_TARGET_NO_NEGO_QAS;
 223                 target->negoFlags |= MPT_TARGET_NO_NEGO_QAS;
 224
 225                 /* Disable QAS in a mixed configuration case
 226                  */
 227
 228                 ddvprintk((KERN_INFO "Disabling QAS due to noQas=%02x on id=%d!\n", noQas, id));
 229         }
 230 }
 231
 232 /**
 233  *      mptspi_writeIOCPage4  - write IOC Page 4
 234  *      @hd: Pointer to a SCSI Host Structure
 235  *      @channel: channel number
 236  *      @id: write IOC Page4 for this ID & Bus
 237  *
 238  *      Return: -EAGAIN if unable to obtain a Message Frame
 239  *              or 0 if success.
 240  *
 241  *      Remark: We do not wait for a return, write pages sequentially.
 242  **/
 243 static int
 244 mptspi_writeIOCPage4(MPT_SCSI_HOST *hd, u8 channel , u8 id)
 245 {
 246         MPT_ADAPTER             *ioc = hd->ioc;
 247         Config_t                *pReq;
 248         IOCPage4_t              *IOCPage4Ptr;
 249         MPT_FRAME_HDR           *mf;
 250         dma_addr_t               dataDma;
 251         u16                      req_idx;
 252         u32                      frameOffset;
 253         u32                      flagsLength;
 254         int                      ii;
 255
 256         /* Get a MF for this command.
 257          */
 258         if ((mf = mpt_get_msg_frame(ioc->DoneCtx, ioc)) == NULL) {
 259                 dfailprintk((MYIOC_s_WARN_FMT "writeIOCPage4 : no msg frames!\n",
 260                                         ioc->name));
 261                 return -EAGAIN;
 262         }
 263
 264         /* Set the request and the data pointers.
 265          * Place data at end of MF.
 266          */
 267         pReq = (Config_t *)mf;
 268
 269         req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
 270         frameOffset = ioc->req_sz - sizeof(IOCPage4_t);
 271
 272         /* Complete the request frame (same for all requests).
 273          */
 274         pReq->Action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
 275         pReq->Reserved = 0;
 276         pReq->ChainOffset = 0;
 277         pReq->Function = MPI_FUNCTION_CONFIG;
 278         pReq->ExtPageLength = 0;
 279         pReq->ExtPageType = 0;
 280         pReq->MsgFlags = 0;
 281         for (ii=0; ii < 8; ii++) {
 282                 pReq->Reserved2[ii] = 0;
 283         }
 284
 285         IOCPage4Ptr = ioc->spi_data.pIocPg4;
 286         dataDma = ioc->spi_data.IocPg4_dma;
 287         ii = IOCPage4Ptr->ActiveSEP++;
 288         IOCPage4Ptr->SEP[ii].SEPTargetID = id;
 289         IOCPage4Ptr->SEP[ii].SEPBus = channel;
 290         pReq->Header = IOCPage4Ptr->Header;
 291         pReq->PageAddress = cpu_to_le32(id | (channel << 8 ));
 292
 293         /* Add a SGE to the config request.
 294          */
 295         flagsLength = MPT_SGE_FLAGS_SSIMPLE_WRITE |
 296                 (IOCPage4Ptr->Header.PageLength + ii) * 4;
 297
 298         mpt_add_sge((char *)&pReq->PageBufferSGE, flagsLength, dataDma);
 299
 300         ddvprintk((MYIOC_s_INFO_FMT
 301                 "writeIOCPage4: MaxSEP=%d ActiveSEP=%d id=%d bus=%d\n",
 302                         ioc->name, IOCPage4Ptr->MaxSEP, IOCPage4Ptr->ActiveSEP, id, channel));
 303
 304         mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
 305
 306         return 0;
 307 }
 308
 309 /**
 310  *      mptspi_initTarget - Target, LUN alloc/free functionality.
 311  *      @hd: Pointer to MPT_SCSI_HOST structure
 312  *      @vtarget: per target private data
 313  *      @sdev: SCSI device
 314  *
 315  *      NOTE: It's only SAFE to call this routine if data points to
 316  *      sane & valid STANDARD INQUIRY data!
 317  *
 318  *      Allocate and initialize memory for this target.
 319  *      Save inquiry data.
 320  *
 321  **/
 322 static void
 323 mptspi_initTarget(MPT_SCSI_HOST *hd, VirtTarget *vtarget,
 324                     struct scsi_device *sdev)
 325 {
 326
 327         /* Is LUN supported? If so, upper 2 bits will be 0
 328         * in first byte of inquiry data.
 329         */
 330         if (sdev->inq_periph_qual != 0)
 331                 return;
 332
 333         if (vtarget == NULL)
 334                 return;
 335
 336         vtarget->type = sdev->type;
 337
 338         if ((sdev->type == TYPE_PROCESSOR) && (hd->ioc->spi_data.Saf_Te)) {
 339                 /* Treat all Processors as SAF-TE if
 340                  * command line option is set */
 341                 vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
 342                 mptspi_writeIOCPage4(hd, vtarget->channel, vtarget->id);
 343         }else if ((sdev->type == TYPE_PROCESSOR) &&
 344                 !(vtarget->tflags & MPT_TARGET_FLAGS_SAF_TE_ISSUED )) {
 345                 if (sdev->inquiry_len > 49 ) {
 346                         if (sdev->inquiry[44] == 'S' &&
 347                             sdev->inquiry[45] == 'A' &&
 348                             sdev->inquiry[46] == 'F' &&
 349                             sdev->inquiry[47] == '-' &&
 350                             sdev->inquiry[48] == 'T' &&
 351                             sdev->inquiry[49] == 'E' ) {
 352                                 vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
 353                                 mptspi_writeIOCPage4(hd, vtarget->channel, vtarget->id);
 354                         }
 355                 }
 356         }
 357         mptspi_setTargetNegoParms(hd, vtarget, sdev);
 358 }
 359
 360 /**
 361  *      mptspi_is_raid - Determines whether target is belonging to volume
 362  *      @hd: Pointer to a SCSI HOST structure
 363  *      @id: target device id
 364  *
 365  *      Return:
 366  *              non-zero = true
 367  *              zero = false
 368  *
 369  */
 370 static int
 371 mptspi_is_raid(struct _MPT_SCSI_HOST *hd, u32 id)
 372 {
 373         int i, rc = 0;
 374
 375         if (!hd->ioc->raid_data.pIocPg2)
 376                 goto out;
 377
 378         if (!hd->ioc->raid_data.pIocPg2->NumActiveVolumes)
 379                 goto out;
 380         for (i=0; i < hd->ioc->raid_data.pIocPg2->NumActiveVolumes; i++) {
 381                 if (hd->ioc->raid_data.pIocPg2->RaidVolume[i].VolumeID == id) {
 382                         rc = 1;
 383                         goto out;
 384                 }
 385         }
 386
 387  out:
 388         return rc;
 389 }
 390
 391 static int mptspi_target_alloc(struct scsi_target *starget)
 392 {
 393         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
 394         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
 395         VirtTarget              *vtarget;
 396
 397         if (hd == NULL)
 398                 return -ENODEV;
 399
 400         vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
 401         if (!vtarget)
 402                 return -ENOMEM;
 403
 404         vtarget->ioc_id = hd->ioc->id;
 405         vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
 406         vtarget->id = (u8)starget->id;
 407         vtarget->channel = (u8)starget->channel;
 408         vtarget->starget = starget;
 409         starget->hostdata = vtarget;
 410
 411         if (starget->channel == 1) {
 412                 if (mptscsih_is_phys_disk(hd->ioc, 0, starget->id) == 0)
 413                         return 0;
 414                 vtarget->tflags |= MPT_TARGET_FLAGS_RAID_COMPONENT;
 415                 /* The real channel for this device is zero */
 416                 vtarget->channel = 0;
 417                 /* The actual physdisknum (for RAID passthrough) */
 418                 vtarget->id = mptscsih_raid_id_to_num(hd->ioc, 0,
 419                     starget->id);
 420         }
 421
 422         if (starget->channel == 0 &&
 423             mptspi_is_raid(hd, starget->id)) {
 424                 vtarget->raidVolume = 1;
 425                 ddvprintk((KERN_INFO
 426                     "RAID Volume @ channel=%d id=%d\n", starget->channel,
 427                     starget->id));
 428         }
 429
 430         if (hd->ioc->spi_data.nvram &&
 431             hd->ioc->spi_data.nvram[starget->id] != MPT_HOST_NVRAM_INVALID) {
 432                 u32 nvram = hd->ioc->spi_data.nvram[starget->id];
 433                 spi_min_period(starget) = (nvram & MPT_NVRAM_SYNC_MASK) >> MPT_NVRAM_SYNC_SHIFT;
 434                 spi_max_width(starget) = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
 435         } else {
 436                 spi_min_period(starget) = hd->ioc->spi_data.minSyncFactor;
 437                 spi_max_width(starget) = hd->ioc->spi_data.maxBusWidth;
 438         }
 439         spi_max_offset(starget) = hd->ioc->spi_data.maxSyncOffset;
 440
 441         spi_offset(starget) = 0;
 442         mptspi_write_width(starget, 0);
 443
 444         return 0;
 445 }
 446
 447 static void
 448 mptspi_target_destroy(struct scsi_target *starget)
 449 {
 450         if (starget->hostdata)
 451                 kfree(starget->hostdata);
 452         starget->hostdata = NULL;
 453 }
 454
 455 /**
 456  *      mptspi_print_write_nego - negotiation parameters debug info that is being sent
 457  *      @hd: Pointer to a SCSI HOST structure
 458  *      @starget: SCSI target
 459  *      @ii: negotiation parameters
 460  *
 461  */
 462 static void
 463 mptspi_print_write_nego(struct _MPT_SCSI_HOST *hd, struct scsi_target *starget, u32 ii)
 464 {
 465         ddvprintk((MYIOC_s_INFO_FMT "id=%d Requested = 0x%08x"
 466             " ( %s factor = 0x%02x @ offset = 0x%02x %s%s%s%s%s%s%s%s)\n",
 467             hd->ioc->name, starget->id, ii,
 468             ii & MPI_SCSIDEVPAGE0_NP_WIDE ? "Wide ": "",
 469             ((ii >> 8) & 0xFF), ((ii >> 16) & 0xFF),
 470             ii & MPI_SCSIDEVPAGE0_NP_IU ? "IU ": "",
 471             ii & MPI_SCSIDEVPAGE0_NP_DT ? "DT ": "",
 472             ii & MPI_SCSIDEVPAGE0_NP_QAS ? "QAS ": "",
 473             ii & MPI_SCSIDEVPAGE0_NP_HOLD_MCS ? "HOLDMCS ": "",
 474             ii & MPI_SCSIDEVPAGE0_NP_WR_FLOW ? "WRFLOW ": "",
 475             ii & MPI_SCSIDEVPAGE0_NP_RD_STRM ? "RDSTRM ": "",
 476             ii & MPI_SCSIDEVPAGE0_NP_RTI ? "RTI ": "",
 477             ii & MPI_SCSIDEVPAGE0_NP_PCOMP_EN ? "PCOMP ": ""));
 478 }
 479
 480 /**
 481  *      mptspi_print_read_nego - negotiation parameters debug info that is being read
 482  *      @hd: Pointer to a SCSI HOST structure
 483  *      @starget: SCSI target
 484  *      @ii: negotiation parameters
 485  *
 486  */
 487 static void
 488 mptspi_print_read_nego(struct _MPT_SCSI_HOST *hd, struct scsi_target *starget, u32 ii)
 489 {
 490         ddvprintk((MYIOC_s_INFO_FMT "id=%d Read = 0x%08x"
 491             " ( %s factor = 0x%02x @ offset = 0x%02x %s%s%s%s%s%s%s%s)\n",
 492             hd->ioc->name, starget->id, ii,
 493             ii & MPI_SCSIDEVPAGE0_NP_WIDE ? "Wide ": "",
 494             ((ii >> 8) & 0xFF), ((ii >> 16) & 0xFF),
 495             ii & MPI_SCSIDEVPAGE0_NP_IU ? "IU ": "",
 496             ii & MPI_SCSIDEVPAGE0_NP_DT ? "DT ": "",
 497             ii & MPI_SCSIDEVPAGE0_NP_QAS ? "QAS ": "",
 498             ii & MPI_SCSIDEVPAGE0_NP_HOLD_MCS ? "HOLDMCS ": "",
 499             ii & MPI_SCSIDEVPAGE0_NP_WR_FLOW ? "WRFLOW ": "",
 500             ii & MPI_SCSIDEVPAGE0_NP_RD_STRM ? "RDSTRM ": "",
 501             ii & MPI_SCSIDEVPAGE0_NP_RTI ? "RTI ": "",
 502             ii & MPI_SCSIDEVPAGE0_NP_PCOMP_EN ? "PCOMP ": ""));
 503 }
 504
 505 static int mptspi_read_spi_device_pg0(struct scsi_target *starget,
 506                              struct _CONFIG_PAGE_SCSI_DEVICE_0 *pass_pg0)
 507 {
 508         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
 509         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
 510         struct _MPT_ADAPTER *ioc = hd->ioc;
 511         struct _CONFIG_PAGE_SCSI_DEVICE_0 *pg0;
 512         dma_addr_t pg0_dma;
 513         int size;
 514         struct _x_config_parms cfg;
 515         struct _CONFIG_PAGE_HEADER hdr;
 516         int err = -EBUSY;
 517
 518         /* No SPI parameters for RAID devices */
 519         if (starget->channel == 0 &&
 520             mptspi_is_raid(hd, starget->id))
 521                 return -1;
 522
 523         size = ioc->spi_data.sdp0length * 4;
 524         /*
 525         if (ioc->spi_data.sdp0length & 1)
 526                 size += size + 4;
 527         size += 2048;
 528         */
 529
 530         pg0 = dma_alloc_coherent(&ioc->pcidev->dev, size, &pg0_dma, GFP_KERNEL);
 531         if (pg0 == NULL) {
 532                 starget_printk(KERN_ERR, starget, "dma_alloc_coherent for parameters failed\n");
 533                 return -EINVAL;
 534         }
 535
 536         memset(&hdr, 0, sizeof(hdr));
 537
 538         hdr.PageVersion = ioc->spi_data.sdp0version;
 539         hdr.PageLength = ioc->spi_data.sdp0length;
 540         hdr.PageNumber = 0;
 541         hdr.PageType = MPI_CONFIG_PAGETYPE_SCSI_DEVICE;
 542
 543         memset(&cfg, 0, sizeof(cfg));
 544
 545         cfg.cfghdr.hdr = &hdr;
 546         cfg.physAddr = pg0_dma;
 547         cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
 548         cfg.dir = 0;
 549         cfg.pageAddr = starget->id;
 550
 551         if (mpt_config(ioc, &cfg)) {
 552                 starget_printk(KERN_ERR, starget, "mpt_config failed\n");
 553                 goto out_free;
 554         }
 555         err = 0;
 556         memcpy(pass_pg0, pg0, size);
 557
 558         mptspi_print_read_nego(hd, starget, le32_to_cpu(pg0->NegotiatedParameters));
 559
 560  out_free:
 561         dma_free_coherent(&ioc->pcidev->dev, size, pg0, pg0_dma);
 562         return err;
 563 }
 564
 565 static u32 mptspi_getRP(struct scsi_target *starget)
 566 {
 567         u32 nego = 0;
 568
 569         nego |= spi_iu(starget) ? MPI_SCSIDEVPAGE1_RP_IU : 0;
 570         nego |= spi_dt(starget) ? MPI_SCSIDEVPAGE1_RP_DT : 0;
 571         nego |= spi_qas(starget) ? MPI_SCSIDEVPAGE1_RP_QAS : 0;
 572         nego |= spi_hold_mcs(starget) ? MPI_SCSIDEVPAGE1_RP_HOLD_MCS : 0;
 573         nego |= spi_wr_flow(starget) ? MPI_SCSIDEVPAGE1_RP_WR_FLOW : 0;
 574         nego |= spi_rd_strm(starget) ? MPI_SCSIDEVPAGE1_RP_RD_STRM : 0;
 575         nego |= spi_rti(starget) ? MPI_SCSIDEVPAGE1_RP_RTI : 0;
 576         nego |= spi_pcomp_en(starget) ? MPI_SCSIDEVPAGE1_RP_PCOMP_EN : 0;
 577
 578         nego |= (spi_period(starget) <<  MPI_SCSIDEVPAGE1_RP_SHIFT_MIN_SYNC_PERIOD) & MPI_SCSIDEVPAGE1_RP_MIN_SYNC_PERIOD_MASK;
 579         nego |= (spi_offset(starget) << MPI_SCSIDEVPAGE1_RP_SHIFT_MAX_SYNC_OFFSET) & MPI_SCSIDEVPAGE1_RP_MAX_SYNC_OFFSET_MASK;
 580         nego |= spi_width(starget) ?  MPI_SCSIDEVPAGE1_RP_WIDE : 0;
 581
 582         return nego;
 583 }
 584
 585 static void mptspi_read_parameters(struct scsi_target *starget)
 586 {
 587         int nego;
 588         struct _CONFIG_PAGE_SCSI_DEVICE_0 pg0;
 589
 590         mptspi_read_spi_device_pg0(starget, &pg0);
 591
 592         nego = le32_to_cpu(pg0.NegotiatedParameters);
 593
 594         spi_iu(starget) = (nego & MPI_SCSIDEVPAGE0_NP_IU) ? 1 : 0;
 595         spi_dt(starget) = (nego & MPI_SCSIDEVPAGE0_NP_DT) ? 1 : 0;
 596         spi_qas(starget) = (nego & MPI_SCSIDEVPAGE0_NP_QAS) ? 1 : 0;
 597         spi_wr_flow(starget) = (nego & MPI_SCSIDEVPAGE0_NP_WR_FLOW) ? 1 : 0;
 598         spi_rd_strm(starget) = (nego & MPI_SCSIDEVPAGE0_NP_RD_STRM) ? 1 : 0;
 599         spi_rti(starget) = (nego & MPI_SCSIDEVPAGE0_NP_RTI) ? 1 : 0;
 600         spi_pcomp_en(starget) = (nego & MPI_SCSIDEVPAGE0_NP_PCOMP_EN) ? 1 : 0;
 601         spi_hold_mcs(starget) = (nego & MPI_SCSIDEVPAGE0_NP_HOLD_MCS) ? 1 : 0;
 602         spi_period(starget) = (nego & MPI_SCSIDEVPAGE0_NP_NEG_SYNC_PERIOD_MASK) >> MPI_SCSIDEVPAGE0_NP_SHIFT_SYNC_PERIOD;
 603         spi_offset(starget) = (nego & MPI_SCSIDEVPAGE0_NP_NEG_SYNC_OFFSET_MASK) >> MPI_SCSIDEVPAGE0_NP_SHIFT_SYNC_OFFSET;
 604         spi_width(starget) = (nego & MPI_SCSIDEVPAGE0_NP_WIDE) ? 1 : 0;
 605 }
 606
 607 static int
 608 mptscsih_quiesce_raid(MPT_SCSI_HOST *hd, int quiesce, u8 channel, u8 id)
 609 {
 610         MpiRaidActionRequest_t  *pReq;
 611         MPT_FRAME_HDR           *mf;
 612
 613         /* Get and Populate a free Frame
 614          */
 615         if ((mf = mpt_get_msg_frame(hd->ioc->InternalCtx, hd->ioc)) == NULL) {
 616                 ddvprintk((MYIOC_s_WARN_FMT "_do_raid: no msg frames!\n",
 617                                         hd->ioc->name));
 618                 return -EAGAIN;
 619         }
 620         pReq = (MpiRaidActionRequest_t *)mf;
 621         if (quiesce)
 622                 pReq->Action = MPI_RAID_ACTION_QUIESCE_PHYS_IO;
 623         else
 624                 pReq->Action = MPI_RAID_ACTION_ENABLE_PHYS_IO;
 625         pReq->Reserved1 = 0;
 626         pReq->ChainOffset = 0;
 627         pReq->Function = MPI_FUNCTION_RAID_ACTION;
 628         pReq->VolumeID = id;
 629         pReq->VolumeBus = channel;
 630         pReq->PhysDiskNum = 0;
 631         pReq->MsgFlags = 0;
 632         pReq->Reserved2 = 0;
 633         pReq->ActionDataWord = 0; /* Reserved for this action */
 634
 635         mpt_add_sge((char *)&pReq->ActionDataSGE,
 636                 MPT_SGE_FLAGS_SSIMPLE_READ | 0, (dma_addr_t) -1);
 637
 638         ddvprintk((MYIOC_s_INFO_FMT "RAID Volume action=%x channel=%d id=%d\n",
 639                         hd->ioc->name, pReq->Action, channel, id));
 640
 641         hd->pLocal = NULL;
 642         hd->timer.expires = jiffies + HZ*10; /* 10 second timeout */
 643         hd->scandv_wait_done = 0;
 644
 645         /* Save cmd pointer, for resource free if timeout or
 646          * FW reload occurs
 647          */
 648         hd->cmdPtr = mf;
 649
 650         add_timer(&hd->timer);
 651         mpt_put_msg_frame(hd->ioc->InternalCtx, hd->ioc, mf);
 652         wait_event(hd->scandv_waitq, hd->scandv_wait_done);
 653
 654         if ((hd->pLocal == NULL) || (hd->pLocal->completion != 0))
 655                 return -1;
 656
 657         return 0;
 658 }
 659
 660 static void mptspi_dv_device(struct _MPT_SCSI_HOST *hd,
 661                              struct scsi_device *sdev)
 662 {
 663         VirtTarget *vtarget = scsi_target(sdev)->hostdata;
 664
 665         /* no DV on RAID devices */
 666         if (sdev->channel == 0 &&
 667             mptspi_is_raid(hd, sdev->id))
 668                 return;
 669
 670         /* If this is a piece of a RAID, then quiesce first */
 671         if (sdev->channel == 1 &&
 672             mptscsih_quiesce_raid(hd, 1, vtarget->channel, vtarget->id) < 0) {
 673                 starget_printk(KERN_ERR, scsi_target(sdev),
 674                                "Integrated RAID quiesce failed\n");
 675                 return;
 676         }
 677
 678         hd->spi_pending |= (1 << sdev->id);
 679         spi_dv_device(sdev);
 680         hd->spi_pending &= ~(1 << sdev->id);
 681
 682         if (sdev->channel == 1 &&
 683             mptscsih_quiesce_raid(hd, 0, vtarget->channel, vtarget->id) < 0)
 684                 starget_printk(KERN_ERR, scsi_target(sdev),
 685                                "Integrated RAID resume failed\n");
 686
 687         mptspi_read_parameters(sdev->sdev_target);
 688         spi_display_xfer_agreement(sdev->sdev_target);
 689         mptspi_read_parameters(sdev->sdev_target);
 690 }
 691
 692 static int mptspi_slave_alloc(struct scsi_device *sdev)
 693 {
 694         MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *)sdev->host->hostdata;
 695         VirtTarget              *vtarget;
 696         VirtDevice              *vdev;
 697         struct scsi_target      *starget;
 698
 699         if (sdev->channel == 1 &&
 700                 mptscsih_is_phys_disk(hd->ioc, 0, sdev->id) == 0)
 701                         return -ENXIO;
 702
 703         vdev = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
 704         if (!vdev) {
 705                 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
 706                                 hd->ioc->name, sizeof(VirtDevice));
 707                 return -ENOMEM;
 708         }
 709
 710         vdev->lun = sdev->lun;
 711         sdev->hostdata = vdev;
 712
 713         starget = scsi_target(sdev);
 714         vtarget = starget->hostdata;
 715         vdev->vtarget = vtarget;
 716         vtarget->num_luns++;
 717
 718         if (sdev->channel == 1)
 719                 sdev->no_uld_attach = 1;
 720
 721         return 0;
 722 }
 723
 724 static int mptspi_slave_configure(struct scsi_device *sdev)
 725 {
 726         struct _MPT_SCSI_HOST *hd =
 727                 (struct _MPT_SCSI_HOST *)sdev->host->hostdata;
 728         VirtTarget *vtarget = scsi_target(sdev)->hostdata;
 729         int ret;
 730
 731         mptspi_initTarget(hd, vtarget, sdev);
 732
 733         ret = mptscsih_slave_configure(sdev);
 734
 735         if (ret)
 736                 return ret;
 737
 738         ddvprintk((MYIOC_s_INFO_FMT "id=%d min_period=0x%02x"
 739                 " max_offset=0x%02x max_width=%d\n", hd->ioc->name,
 740                 sdev->id, spi_min_period(scsi_target(sdev)),
 741                 spi_max_offset(scsi_target(sdev)),
 742                 spi_max_width(scsi_target(sdev))));
 743
 744         if ((sdev->channel == 1 ||
 745              !(mptspi_is_raid(hd, sdev->id))) &&
 746             !spi_initial_dv(sdev->sdev_target))
 747                 mptspi_dv_device(hd, sdev);
 748
 749         return 0;
 750 }
 751
 752 static int
 753 mptspi_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
 754 {
 755         struct _MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *) SCpnt->device->host->hostdata;
 756         VirtDevice      *vdev = SCpnt->device->hostdata;
 757
 758         if (!vdev || !vdev->vtarget) {
 759                 SCpnt->result = DID_NO_CONNECT << 16;
 760                 done(SCpnt);
 761                 return 0;
 762         }
 763
 764         if (SCpnt->device->channel == 1 &&
 765                 mptscsih_is_phys_disk(hd->ioc, 0, SCpnt->device->id) == 0) {
 766                 SCpnt->result = DID_NO_CONNECT << 16;
 767                 done(SCpnt);
 768                 return 0;
 769         }
 770
 771 #ifdef MPT_DEBUG_DV
 772         if (spi_dv_pending(scsi_target(SCpnt->device)))
 773                 scsi_print_command(SCpnt);
 774 #endif
 775
 776         return mptscsih_qcmd(SCpnt,done);
 777 }
 778
 779 static void mptspi_slave_destroy(struct scsi_device *sdev)
 780 {
 781         struct scsi_target *starget = scsi_target(sdev);
 782         VirtTarget *vtarget = starget->hostdata;
 783         VirtDevice *vdevice = sdev->hostdata;
 784
 785         /* Will this be the last lun on a non-raid device? */
 786         if (vtarget->num_luns == 1 && vdevice->configured_lun) {
 787                 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 788
 789                 /* Async Narrow */
 790                 pg1.RequestedParameters = 0;
 791                 pg1.Reserved = 0;
 792                 pg1.Configuration = 0;
 793
 794                 mptspi_write_spi_device_pg1(starget, &pg1);
 795         }
 796
 797         mptscsih_slave_destroy(sdev);
 798 }
 799
 800 static struct scsi_host_template mptspi_driver_template = {
 801         .module                         = THIS_MODULE,
 802         .proc_name                      = "mptspi",
 803         .proc_info                      = mptscsih_proc_info,
 804         .name                           = "MPT SPI Host",
 805         .info                           = mptscsih_info,
 806         .queuecommand                   = mptspi_qcmd,
 807         .target_alloc                   = mptspi_target_alloc,
 808         .slave_alloc                    = mptspi_slave_alloc,
 809         .slave_configure                = mptspi_slave_configure,
 810         .target_destroy                 = mptspi_target_destroy,
 811         .slave_destroy                  = mptspi_slave_destroy,
 812         .change_queue_depth             = mptscsih_change_queue_depth,
 813         .eh_abort_handler               = mptscsih_abort,
 814         .eh_device_reset_handler        = mptscsih_dev_reset,
 815         .eh_bus_reset_handler           = mptscsih_bus_reset,
 816         .eh_host_reset_handler          = mptscsih_host_reset,
 817         .bios_param                     = mptscsih_bios_param,
 818         .can_queue                      = MPT_SCSI_CAN_QUEUE,
 819         .this_id                        = -1,
 820         .sg_tablesize                   = MPT_SCSI_SG_DEPTH,
 821         .max_sectors                    = 8192,
 822         .cmd_per_lun                    = 7,
 823         .use_clustering                 = ENABLE_CLUSTERING,
 824         .shost_attrs                    = mptscsih_host_attrs,
 825 };
 826
 827 static int mptspi_write_spi_device_pg1(struct scsi_target *starget,
 828                                struct _CONFIG_PAGE_SCSI_DEVICE_1 *pass_pg1)
 829 {
 830         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
 831         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
 832         struct _MPT_ADAPTER *ioc = hd->ioc;
 833         struct _CONFIG_PAGE_SCSI_DEVICE_1 *pg1;
 834         dma_addr_t pg1_dma;
 835         int size;
 836         struct _x_config_parms cfg;
 837         struct _CONFIG_PAGE_HEADER hdr;
 838         int err = -EBUSY;
 839
 840         /* don't allow updating nego parameters on RAID devices */
 841         if (starget->channel == 0 &&
 842             mptspi_is_raid(hd, starget->id))
 843                 return -1;
 844
 845         size = ioc->spi_data.sdp1length * 4;
 846
 847         pg1 = dma_alloc_coherent(&ioc->pcidev->dev, size, &pg1_dma, GFP_KERNEL);
 848         if (pg1 == NULL) {
 849                 starget_printk(KERN_ERR, starget, "dma_alloc_coherent for parameters failed\n");
 850                 return -EINVAL;
 851         }
 852
 853         memset(&hdr, 0, sizeof(hdr));
 854
 855         hdr.PageVersion = ioc->spi_data.sdp1version;
 856         hdr.PageLength = ioc->spi_data.sdp1length;
 857         hdr.PageNumber = 1;
 858         hdr.PageType = MPI_CONFIG_PAGETYPE_SCSI_DEVICE;
 859
 860         memset(&cfg, 0, sizeof(cfg));
 861
 862         cfg.cfghdr.hdr = &hdr;
 863         cfg.physAddr = pg1_dma;
 864         cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
 865         cfg.dir = 1;
 866         cfg.pageAddr = starget->id;
 867
 868         memcpy(pg1, pass_pg1, size);
 869
 870         pg1->Header.PageVersion = hdr.PageVersion;
 871         pg1->Header.PageLength = hdr.PageLength;
 872         pg1->Header.PageNumber = hdr.PageNumber;
 873         pg1->Header.PageType = hdr.PageType;
 874
 875         mptspi_print_write_nego(hd, starget, le32_to_cpu(pg1->RequestedParameters));
 876
 877         if (mpt_config(ioc, &cfg)) {
 878                 starget_printk(KERN_ERR, starget, "mpt_config failed\n");
 879                 goto out_free;
 880         }
 881         err = 0;
 882
 883  out_free:
 884         dma_free_coherent(&ioc->pcidev->dev, size, pg1, pg1_dma);
 885         return err;
 886 }
 887
 888 static void mptspi_write_offset(struct scsi_target *starget, int offset)
 889 {
 890         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 891         u32 nego;
 892
 893         if (offset < 0)
 894                 offset = 0;
 895
 896         if (offset > 255)
 897                 offset = 255;
 898
 899         if (spi_offset(starget) == -1)
 900                 mptspi_read_parameters(starget);
 901
 902         spi_offset(starget) = offset;
 903
 904         nego = mptspi_getRP(starget);
 905
 906         pg1.RequestedParameters = cpu_to_le32(nego);
 907         pg1.Reserved = 0;
 908         pg1.Configuration = 0;
 909
 910         mptspi_write_spi_device_pg1(starget, &pg1);
 911 }
 912
 913 static void mptspi_write_period(struct scsi_target *starget, int period)
 914 {
 915         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 916         u32 nego;
 917
 918         if (period < 8)
 919                 period = 8;
 920
 921         if (period > 255)
 922                 period = 255;
 923
 924         if (spi_period(starget) == -1)
 925                 mptspi_read_parameters(starget);
 926
 927         if (period == 8) {
 928                 spi_iu(starget) = 1;
 929                 spi_dt(starget) = 1;
 930         } else if (period == 9) {
 931                 spi_dt(starget) = 1;
 932         }
 933
 934         spi_period(starget) = period;
 935
 936         nego = mptspi_getRP(starget);
 937
 938         pg1.RequestedParameters = cpu_to_le32(nego);
 939         pg1.Reserved = 0;
 940         pg1.Configuration = 0;
 941
 942         mptspi_write_spi_device_pg1(starget, &pg1);
 943 }
 944
 945 static void mptspi_write_dt(struct scsi_target *starget, int dt)
 946 {
 947         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 948         u32 nego;
 949
 950         if (spi_period(starget) == -1)
 951                 mptspi_read_parameters(starget);
 952
 953         if (!dt && spi_period(starget) < 10)
 954                 spi_period(starget) = 10;
 955
 956         spi_dt(starget) = dt;
 957
 958         nego = mptspi_getRP(starget);
 959
 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_iu(struct scsi_target *starget, int iu)
 969 {
 970         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
 971         u32 nego;
 972
 973         if (spi_period(starget) == -1)
 974                 mptspi_read_parameters(starget);
 975
 976         if (!iu && spi_period(starget) < 9)
 977                 spi_period(starget) = 9;
 978
 979         spi_iu(starget) = iu;
 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 #define MPTSPI_SIMPLE_TRANSPORT_PARM(parm)                              \
 991 static void mptspi_write_##parm(struct scsi_target *starget, int parm)\
 992 {                                                                       \
 993         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;                          \
 994         u32 nego;                                                       \
 995                                                                         \
 996         spi_##parm(starget) = parm;                                     \
 997                                                                         \
 998         nego = mptspi_getRP(starget);                                   \
 999                                                                         \
1000         pg1.RequestedParameters = cpu_to_le32(nego);                    \
1001         pg1.Reserved = 0;                                               \
1002         pg1.Configuration = 0;                                          \
1003                                                                         \
1004         mptspi_write_spi_device_pg1(starget, &pg1);                             \
1005 }
1006
1007 MPTSPI_SIMPLE_TRANSPORT_PARM(rd_strm)
1008 MPTSPI_SIMPLE_TRANSPORT_PARM(wr_flow)
1009 MPTSPI_SIMPLE_TRANSPORT_PARM(rti)
1010 MPTSPI_SIMPLE_TRANSPORT_PARM(hold_mcs)
1011 MPTSPI_SIMPLE_TRANSPORT_PARM(pcomp_en)
1012
1013 static void mptspi_write_qas(struct scsi_target *starget, int qas)
1014 {
1015         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
1016         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1017         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
1018         VirtTarget *vtarget = starget->hostdata;
1019         u32 nego;
1020
1021         if ((vtarget->negoFlags & MPT_TARGET_NO_NEGO_QAS) ||
1022             hd->ioc->spi_data.noQas)
1023                 spi_qas(starget) = 0;
1024         else
1025                 spi_qas(starget) = qas;
1026
1027         nego = mptspi_getRP(starget);
1028
1029         pg1.RequestedParameters = cpu_to_le32(nego);
1030         pg1.Reserved = 0;
1031         pg1.Configuration = 0;
1032
1033         mptspi_write_spi_device_pg1(starget, &pg1);
1034 }
1035
1036 static void mptspi_write_width(struct scsi_target *starget, int width)
1037 {
1038         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
1039         u32 nego;
1040
1041         if (!width) {
1042                 spi_dt(starget) = 0;
1043                 if (spi_period(starget) < 10)
1044                         spi_period(starget) = 10;
1045         }
1046
1047         spi_width(starget) = width;
1048
1049         nego = mptspi_getRP(starget);
1050
1051         pg1.RequestedParameters = cpu_to_le32(nego);
1052         pg1.Reserved = 0;
1053         pg1.Configuration = 0;
1054
1055         mptspi_write_spi_device_pg1(starget, &pg1);
1056 }
1057
1058 struct work_queue_wrapper {
1059         struct work_struct      work;
1060         struct _MPT_SCSI_HOST   *hd;
1061         int                     disk;
1062 };
1063
1064 static void mpt_work_wrapper(struct work_struct *work)
1065 {
1066         struct work_queue_wrapper *wqw =
1067                 container_of(work, struct work_queue_wrapper, work);
1068         struct _MPT_SCSI_HOST *hd = wqw->hd;
1069         struct Scsi_Host *shost = hd->ioc->sh;
1070         struct scsi_device *sdev;
1071         int disk = wqw->disk;
1072         struct _CONFIG_PAGE_IOC_3 *pg3;
1073
1074         kfree(wqw);
1075
1076         mpt_findImVolumes(hd->ioc);
1077         pg3 = hd->ioc->raid_data.pIocPg3;
1078         if (!pg3)
1079                 return;
1080
1081         shost_for_each_device(sdev,shost) {
1082                 struct scsi_target *starget = scsi_target(sdev);
1083                 VirtTarget *vtarget = starget->hostdata;
1084
1085                 /* only want to search RAID components */
1086                 if (sdev->channel != 1)
1087                         continue;
1088
1089                 /* The id is the raid PhysDiskNum, even if
1090                  * starget->id is the actual target address */
1091                 if(vtarget->id != disk)
1092                         continue;
1093
1094                 starget_printk(KERN_INFO, vtarget->starget,
1095                                "Integrated RAID requests DV of new device\n");
1096                 mptspi_dv_device(hd, sdev);
1097         }
1098         shost_printk(KERN_INFO, shost,
1099                      "Integrated RAID detects new device %d\n", disk);
1100         scsi_scan_target(&hd->ioc->sh->shost_gendev, 1, disk, 0, 1);
1101 }
1102
1103
1104 static void mpt_dv_raid(struct _MPT_SCSI_HOST *hd, int disk)
1105 {
1106         struct work_queue_wrapper *wqw = kmalloc(sizeof(*wqw), GFP_ATOMIC);
1107
1108         if (!wqw) {
1109                 shost_printk(KERN_ERR, hd->ioc->sh,
1110                              "Failed to act on RAID event for physical disk %d\n",
1111                            disk);
1112                 return;
1113         }
1114         INIT_WORK(&wqw->work, mpt_work_wrapper);
1115         wqw->hd = hd;
1116         wqw->disk = disk;
1117
1118         schedule_work(&wqw->work);
1119 }
1120
1121 static int
1122 mptspi_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1123 {
1124         u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1125         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
1126
1127         if (hd && event ==  MPI_EVENT_INTEGRATED_RAID) {
1128                 int reason
1129                         = (le32_to_cpu(pEvReply->Data[0]) & 0x00FF0000) >> 16;
1130
1131                 if (reason == MPI_EVENT_RAID_RC_DOMAIN_VAL_NEEDED) {
1132                         int disk = (le32_to_cpu(pEvReply->Data[0]) & 0xFF000000) >> 24;
1133                         mpt_dv_raid(hd, disk);
1134                 }
1135         }
1136         return mptscsih_event_process(ioc, pEvReply);
1137 }
1138
1139 static int
1140 mptspi_deny_binding(struct scsi_target *starget)
1141 {
1142         struct _MPT_SCSI_HOST *hd =
1143                 (struct _MPT_SCSI_HOST *)dev_to_shost(starget->dev.parent)->hostdata;
1144         return ((mptspi_is_raid(hd, starget->id)) &&
1145                 starget->channel == 0) ? 1 : 0;
1146 }
1147
1148 static struct spi_function_template mptspi_transport_functions = {
1149         .get_offset     = mptspi_read_parameters,
1150         .set_offset     = mptspi_write_offset,
1151         .show_offset    = 1,
1152         .get_period     = mptspi_read_parameters,
1153         .set_period     = mptspi_write_period,
1154         .show_period    = 1,
1155         .get_width      = mptspi_read_parameters,
1156         .set_width      = mptspi_write_width,
1157         .show_width     = 1,
1158         .get_iu         = mptspi_read_parameters,
1159         .set_iu         = mptspi_write_iu,
1160         .show_iu        = 1,
1161         .get_dt         = mptspi_read_parameters,
1162         .set_dt         = mptspi_write_dt,
1163         .show_dt        = 1,
1164         .get_qas        = mptspi_read_parameters,
1165         .set_qas        = mptspi_write_qas,
1166         .show_qas       = 1,
1167         .get_wr_flow    = mptspi_read_parameters,
1168         .set_wr_flow    = mptspi_write_wr_flow,
1169         .show_wr_flow   = 1,
1170         .get_rd_strm    = mptspi_read_parameters,
1171         .set_rd_strm    = mptspi_write_rd_strm,
1172         .show_rd_strm   = 1,
1173         .get_rti        = mptspi_read_parameters,
1174         .set_rti        = mptspi_write_rti,
1175         .show_rti       = 1,
1176         .get_pcomp_en   = mptspi_read_parameters,
1177         .set_pcomp_en   = mptspi_write_pcomp_en,
1178         .show_pcomp_en  = 1,
1179         .get_hold_mcs   = mptspi_read_parameters,
1180         .set_hold_mcs   = mptspi_write_hold_mcs,
1181         .show_hold_mcs  = 1,
1182         .deny_binding   = mptspi_deny_binding,
1183 };
1184
1185 /****************************************************************************
1186  * Supported hardware
1187  */
1188
1189 static struct pci_device_id mptspi_pci_table[] = {
1190         { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_53C1030,
1191                 PCI_ANY_ID, PCI_ANY_ID },
1192         { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_53C1035,
1193                 PCI_ANY_ID, PCI_ANY_ID },
1194         {0}     /* Terminating entry */
1195 };
1196 MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
1197
1198
1199 /*
1200  * renegotiate for a given target
1201  */
1202 static void
1203 mptspi_dv_renegotiate_work(struct work_struct *work)
1204 {
1205         struct work_queue_wrapper *wqw =
1206                 container_of(work, struct work_queue_wrapper, work);
1207         struct _MPT_SCSI_HOST *hd = wqw->hd;
1208         struct scsi_device *sdev;
1209         struct scsi_target *starget;
1210         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
1211         u32 nego;
1212
1213         kfree(wqw);
1214
1215         if (hd->spi_pending) {
1216                 shost_for_each_device(sdev, hd->ioc->sh) {
1217                         if  (hd->spi_pending & (1 << sdev->id))
1218                                 continue;
1219                         starget = scsi_target(sdev);
1220                         nego = mptspi_getRP(starget);
1221                         pg1.RequestedParameters = cpu_to_le32(nego);
1222                         pg1.Reserved = 0;
1223                         pg1.Configuration = 0;
1224                         mptspi_write_spi_device_pg1(starget, &pg1);
1225                 }
1226         } else {
1227                 shost_for_each_device(sdev, hd->ioc->sh)
1228                         mptspi_dv_device(hd, sdev);
1229         }
1230 }
1231
1232 static void
1233 mptspi_dv_renegotiate(struct _MPT_SCSI_HOST *hd)
1234 {
1235         struct work_queue_wrapper *wqw = kmalloc(sizeof(*wqw), GFP_ATOMIC);
1236
1237         if (!wqw)
1238                 return;
1239
1240         INIT_WORK(&wqw->work, mptspi_dv_renegotiate_work);
1241         wqw->hd = hd;
1242
1243         schedule_work(&wqw->work);
1244 }
1245
1246 /*
1247  * spi module reset handler
1248  */
1249 static int
1250 mptspi_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1251 {
1252         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
1253         int rc;
1254
1255         rc = mptscsih_ioc_reset(ioc, reset_phase);
1256
1257         if (reset_phase == MPT_IOC_POST_RESET)
1258                 mptspi_dv_renegotiate(hd);
1259
1260         return rc;
1261 }
1262
1263 #ifdef CONFIG_PM
1264 /*
1265  * spi module resume handler
1266  */
1267 static int
1268 mptspi_resume(struct pci_dev *pdev)
1269 {
1270         MPT_ADAPTER     *ioc = pci_get_drvdata(pdev);
1271         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
1272         int rc;
1273
1274         rc = mptscsih_resume(pdev);
1275         mptspi_dv_renegotiate(hd);
1276
1277         return rc;
1278 }
1279 #endif
1280
1281 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1282 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1283 /*
1284  *      mptspi_probe - Installs scsi devices per bus.
1285  *      @pdev: Pointer to pci_dev structure
1286  *
1287  *      Returns 0 for success, non-zero for failure.
1288  *
1289  */
1290 static int
1291 mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1292 {
1293         struct Scsi_Host        *sh;
1294         MPT_SCSI_HOST           *hd;
1295         MPT_ADAPTER             *ioc;
1296         unsigned long            flags;
1297         int                      ii;
1298         int                      numSGE = 0;
1299         int                      scale;
1300         int                      ioc_cap;
1301         int                     error=0;
1302         int                     r;
1303
1304         if ((r = mpt_attach(pdev,id)) != 0)
1305                 return r;
1306
1307         ioc = pci_get_drvdata(pdev);
1308         ioc->DoneCtx = mptspiDoneCtx;
1309         ioc->TaskCtx = mptspiTaskCtx;
1310         ioc->InternalCtx = mptspiInternalCtx;
1311
1312         /*  Added sanity check on readiness of the MPT adapter.
1313          */
1314         if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1315                 printk(MYIOC_s_WARN_FMT
1316                   "Skipping because it's not operational!\n",
1317                   ioc->name);
1318                 error = -ENODEV;
1319                 goto out_mptspi_probe;
1320         }
1321
1322         if (!ioc->active) {
1323                 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1324                   ioc->name);
1325                 error = -ENODEV;
1326                 goto out_mptspi_probe;
1327         }
1328
1329         /*  Sanity check - ensure at least 1 port is INITIATOR capable
1330          */
1331         ioc_cap = 0;
1332         for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1333                 if (ioc->pfacts[ii].ProtocolFlags &
1334                     MPI_PORTFACTS_PROTOCOL_INITIATOR)
1335                         ioc_cap ++;
1336         }
1337
1338         if (!ioc_cap) {
1339                 printk(MYIOC_s_WARN_FMT
1340                         "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1341                         ioc->name, ioc);
1342                 return 0;
1343         }
1344
1345         sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST));
1346
1347         if (!sh) {
1348                 printk(MYIOC_s_WARN_FMT
1349                         "Unable to register controller with SCSI subsystem\n",
1350                         ioc->name);
1351                 error = -1;
1352                 goto out_mptspi_probe;
1353         }
1354
1355         spin_lock_irqsave(&ioc->FreeQlock, flags);
1356
1357         /* Attach the SCSI Host to the IOC structure
1358          */
1359         ioc->sh = sh;
1360
1361         sh->io_port = 0;
1362         sh->n_io_port = 0;
1363         sh->irq = 0;
1364
1365         /* set 16 byte cdb's */
1366         sh->max_cmd_len = 16;
1367
1368         /* Yikes!  This is important!
1369          * Otherwise, by default, linux
1370          * only scans target IDs 0-7!
1371          * pfactsN->MaxDevices unreliable
1372          * (not supported in early
1373          *      versions of the FW).
1374          * max_id = 1 + actual max id,
1375          * max_lun = 1 + actual last lun,
1376          *      see hosts.h :o(
1377          */
1378         sh->max_id = ioc->devices_per_bus;
1379
1380         sh->max_lun = MPT_LAST_LUN + 1;
1381         /*
1382          * If RAID Firmware Detected, setup virtual channel
1383          */
1384         if (ioc->ir_firmware)
1385                 sh->max_channel = 1;
1386         else
1387                 sh->max_channel = 0;
1388         sh->this_id = ioc->pfacts[0].PortSCSIID;
1389
1390         /* Required entry.
1391          */
1392         sh->unique_id = ioc->id;
1393
1394         /* Verify that we won't exceed the maximum
1395          * number of chain buffers
1396          * We can optimize:  ZZ = req_sz/sizeof(SGE)
1397          * For 32bit SGE's:
1398          *  numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1399          *               + (req_sz - 64)/sizeof(SGE)
1400          * A slightly different algorithm is required for
1401          * 64bit SGEs.
1402          */
1403         scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
1404         if (sizeof(dma_addr_t) == sizeof(u64)) {
1405                 numSGE = (scale - 1) *
1406                   (ioc->facts.MaxChainDepth-1) + scale +
1407                   (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
1408                   sizeof(u32));
1409         } else {
1410                 numSGE = 1 + (scale - 1) *
1411                   (ioc->facts.MaxChainDepth-1) + scale +
1412                   (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
1413                   sizeof(u32));
1414         }
1415
1416         if (numSGE < sh->sg_tablesize) {
1417                 /* Reset this value */
1418                 dprintk((MYIOC_s_INFO_FMT
1419                   "Resetting sg_tablesize to %d from %d\n",
1420                   ioc->name, numSGE, sh->sg_tablesize));
1421                 sh->sg_tablesize = numSGE;
1422         }
1423
1424         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1425
1426         hd = (MPT_SCSI_HOST *) sh->hostdata;
1427         hd->ioc = ioc;
1428
1429         /* SCSI needs scsi_cmnd lookup table!
1430          * (with size equal to req_depth*PtrSz!)
1431          */
1432         hd->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
1433         if (!hd->ScsiLookup) {
1434                 error = -ENOMEM;
1435                 goto out_mptspi_probe;
1436         }
1437
1438         dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p\n",
1439                  ioc->name, hd->ScsiLookup));
1440
1441         /* Clear the TM flags
1442          */
1443         hd->tmPending = 0;
1444         hd->tmState = TM_STATE_NONE;
1445         hd->resetPending = 0;
1446         hd->abortSCpnt = NULL;
1447
1448         /* Clear the pointer used to store
1449          * single-threaded commands, i.e., those
1450          * issued during a bus scan, dv and
1451          * configuration pages.
1452          */
1453         hd->cmdPtr = NULL;
1454
1455         /* Initialize this SCSI Hosts' timers
1456          * To use, set the timer expires field
1457          * and add_timer
1458          */
1459         init_timer(&hd->timer);
1460         hd->timer.data = (unsigned long) hd;
1461         hd->timer.function = mptscsih_timer_expired;
1462
1463         ioc->spi_data.Saf_Te = mpt_saf_te;
1464
1465         hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
1466         ddvprintk((MYIOC_s_INFO_FMT
1467                 "saf_te %x\n",
1468                 ioc->name,
1469                 mpt_saf_te));
1470         ioc->spi_data.noQas = 0;
1471
1472         init_waitqueue_head(&hd->scandv_waitq);
1473         hd->scandv_wait_done = 0;
1474         hd->last_queue_full = 0;
1475         hd->spi_pending = 0;
1476
1477         /* Some versions of the firmware don't support page 0; without
1478          * that we can't get the parameters */
1479         if (hd->ioc->spi_data.sdp0length != 0)
1480                 sh->transportt = mptspi_transport_template;
1481
1482         error = scsi_add_host (sh, &ioc->pcidev->dev);
1483         if(error) {
1484                 dprintk((KERN_ERR MYNAM
1485                   "scsi_add_host failed\n"));
1486                 goto out_mptspi_probe;
1487         }
1488
1489         /*
1490          * issue internal bus reset
1491          */
1492         if (ioc->spi_data.bus_reset)
1493                 mptscsih_TMHandler(hd,
1494                     MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
1495                     0, 0, 0, 0, 5);
1496
1497         scsi_scan_host(sh);
1498         return 0;
1499
1500 out_mptspi_probe:
1501
1502         mptscsih_remove(pdev);
1503         return error;
1504 }
1505
1506 static struct pci_driver mptspi_driver = {
1507         .name           = "mptspi",
1508         .id_table       = mptspi_pci_table,
1509         .probe          = mptspi_probe,
1510         .remove         = __devexit_p(mptscsih_remove),
1511         .shutdown       = mptscsih_shutdown,
1512 #ifdef CONFIG_PM
1513         .suspend        = mptscsih_suspend,
1514         .resume         = mptspi_resume,
1515 #endif
1516 };
1517
1518 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1519 /**
1520  *      mptspi_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1521  *
1522  *      Returns 0 for success, non-zero for failure.
1523  */
1524 static int __init
1525 mptspi_init(void)
1526 {
1527         int error;
1528
1529         show_mptmod_ver(my_NAME, my_VERSION);
1530
1531         mptspi_transport_template = spi_attach_transport(&mptspi_transport_functions);
1532         if (!mptspi_transport_template)
1533                 return -ENODEV;
1534
1535         mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER);
1536         mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER);
1537         mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER);
1538
1539         if (mpt_event_register(mptspiDoneCtx, mptspi_event_process) == 0) {
1540                 devtverboseprintk((KERN_INFO MYNAM
1541                   ": Registered for IOC event notifications\n"));
1542         }
1543
1544         if (mpt_reset_register(mptspiDoneCtx, mptspi_ioc_reset) == 0) {
1545                 dprintk((KERN_INFO MYNAM
1546                   ": Registered for IOC reset notifications\n"));
1547         }
1548
1549         error = pci_register_driver(&mptspi_driver);
1550         if (error)
1551                 spi_release_transport(mptspi_transport_template);
1552
1553         return error;
1554 }
1555
1556 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1557 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1558 /**
1559  *      mptspi_exit - Unregisters MPT adapter(s)
1560  */
1561 static void __exit
1562 mptspi_exit(void)
1563 {
1564         pci_unregister_driver(&mptspi_driver);
1565
1566         mpt_reset_deregister(mptspiDoneCtx);
1567         dprintk((KERN_INFO MYNAM
1568           ": Deregistered for IOC reset notifications\n"));
1569
1570         mpt_event_deregister(mptspiDoneCtx);
1571         dprintk((KERN_INFO MYNAM
1572           ": Deregistered for IOC event notifications\n"));
1573
1574         mpt_deregister(mptspiInternalCtx);
1575         mpt_deregister(mptspiTaskCtx);
1576         mpt_deregister(mptspiDoneCtx);
1577         spi_release_transport(mptspi_transport_template);
1578 }
1579
1580 module_init(mptspi_init);
1581 module_exit(mptspi_exit);