drivers/block/DAC960.c

   1 /*
   2
   3   Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers
   4
   5   Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com>
   6   Portions Copyright 2002 by Mylex (An IBM Business Unit)
   7
   8   This program is free software; you may redistribute and/or modify it under
   9   the terms of the GNU General Public License Version 2 as published by the
  10   Free Software Foundation.
  11
  12   This program is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
  14   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15   for complete details.
  16
  17 */
  18
  19
  20 #define DAC960_DriverVersion                    "2.5.49"
  21 #define DAC960_DriverDate                       "21 Aug 2007"
  22
  23
  24 #include <linux/module.h>
  25 #include <linux/types.h>
  26 #include <linux/miscdevice.h>
  27 #include <linux/blkdev.h>
  28 #include <linux/bio.h>
  29 #include <linux/completion.h>
  30 #include <linux/delay.h>
  31 #include <linux/genhd.h>
  32 #include <linux/hdreg.h>
  33 #include <linux/blkpg.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/ioport.h>
  37 #include <linux/mm.h>
  38 #include <linux/slab.h>
  39 #include <linux/mutex.h>
  40 #include <linux/proc_fs.h>
  41 #include <linux/seq_file.h>
  42 #include <linux/reboot.h>
  43 #include <linux/spinlock.h>
  44 #include <linux/timer.h>
  45 #include <linux/pci.h>
  46 #include <linux/init.h>
  47 #include <linux/jiffies.h>
  48 #include <linux/random.h>
  49 #include <linux/scatterlist.h>
  50 #include <asm/io.h>
  51 #include <asm/uaccess.h>
  52 #include "DAC960.h"
  53
  54 #define DAC960_GAM_MINOR        252
  55
  56
  57 static DEFINE_MUTEX(DAC960_mutex);
  58 static DAC960_Controller_T *DAC960_Controllers[DAC960_MaxControllers];
  59 static int DAC960_ControllerCount;
  60 static struct proc_dir_entry *DAC960_ProcDirectoryEntry;
  61
  62 static long disk_size(DAC960_Controller_T *p, int drive_nr)
  63 {
  64         if (p->FirmwareType == DAC960_V1_Controller) {
  65                 if (drive_nr >= p->LogicalDriveCount)
  66                         return 0;
  67                 return p->V1.LogicalDriveInformation[drive_nr].
  68                         LogicalDriveSize;
  69         } else {
  70                 DAC960_V2_LogicalDeviceInfo_T *i =
  71                         p->V2.LogicalDeviceInformation[drive_nr];
  72                 if (i == NULL)
  73                         return 0;
  74                 return i->ConfigurableDeviceSize;
  75         }
  76 }
  77
  78 static int DAC960_open(struct block_device *bdev, fmode_t mode)
  79 {
  80         struct gendisk *disk = bdev->bd_disk;
  81         DAC960_Controller_T *p = disk->queue->queuedata;
  82         int drive_nr = (long)disk->private_data;
  83         int ret = -ENXIO;
  84
  85         mutex_lock(&DAC960_mutex);
  86         if (p->FirmwareType == DAC960_V1_Controller) {
  87                 if (p->V1.LogicalDriveInformation[drive_nr].
  88                     LogicalDriveState == DAC960_V1_LogicalDrive_Offline)
  89                         goto out;
  90         } else {
  91                 DAC960_V2_LogicalDeviceInfo_T *i =
  92                         p->V2.LogicalDeviceInformation[drive_nr];
  93                 if (!i || i->LogicalDeviceState == DAC960_V2_LogicalDevice_Offline)
  94                         goto out;
  95         }
  96
  97         check_disk_change(bdev);
  98
  99         if (!get_capacity(p->disks[drive_nr]))
 100                 goto out;
 101         ret = 0;
 102 out:
 103         mutex_unlock(&DAC960_mutex);
 104         return ret;
 105 }
 106
 107 static int DAC960_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 108 {
 109         struct gendisk *disk = bdev->bd_disk;
 110         DAC960_Controller_T *p = disk->queue->queuedata;
 111         int drive_nr = (long)disk->private_data;
 112
 113         if (p->FirmwareType == DAC960_V1_Controller) {
 114                 geo->heads = p->V1.GeometryTranslationHeads;
 115                 geo->sectors = p->V1.GeometryTranslationSectors;
 116                 geo->cylinders = p->V1.LogicalDriveInformation[drive_nr].
 117                         LogicalDriveSize / (geo->heads * geo->sectors);
 118         } else {
 119                 DAC960_V2_LogicalDeviceInfo_T *i =
 120                         p->V2.LogicalDeviceInformation[drive_nr];
 121                 switch (i->DriveGeometry) {
 122                 case DAC960_V2_Geometry_128_32:
 123                         geo->heads = 128;
 124                         geo->sectors = 32;
 125                         break;
 126                 case DAC960_V2_Geometry_255_63:
 127                         geo->heads = 255;
 128                         geo->sectors = 63;
 129                         break;
 130                 default:
 131                         DAC960_Error("Illegal Logical Device Geometry %d\n",
 132                                         p, i->DriveGeometry);
 133                         return -EINVAL;
 134                 }
 135
 136                 geo->cylinders = i->ConfigurableDeviceSize /
 137                         (geo->heads * geo->sectors);
 138         }
 139
 140         return 0;
 141 }
 142
 143 static unsigned int DAC960_check_events(struct gendisk *disk,
 144                                         unsigned int clearing)
 145 {
 146         DAC960_Controller_T *p = disk->queue->queuedata;
 147         int drive_nr = (long)disk->private_data;
 148
 149         if (!p->LogicalDriveInitiallyAccessible[drive_nr])
 150                 return DISK_EVENT_MEDIA_CHANGE;
 151         return 0;
 152 }
 153
 154 static int DAC960_revalidate_disk(struct gendisk *disk)
 155 {
 156         DAC960_Controller_T *p = disk->queue->queuedata;
 157         int unit = (long)disk->private_data;
 158
 159         set_capacity(disk, disk_size(p, unit));
 160         return 0;
 161 }
 162
 163 static const struct block_device_operations DAC960_BlockDeviceOperations = {
 164         .owner                  = THIS_MODULE,
 165         .open                   = DAC960_open,
 166         .getgeo                 = DAC960_getgeo,
 167         .check_events           = DAC960_check_events,
 168         .revalidate_disk        = DAC960_revalidate_disk,
 169 };
 170
 171
 172 /*
 173   DAC960_AnnounceDriver announces the Driver Version and Date, Author's Name,
 174   Copyright Notice, and Electronic Mail Address.
 175 */
 176
 177 static void DAC960_AnnounceDriver(DAC960_Controller_T *Controller)
 178 {
 179   DAC960_Announce("***** DAC960 RAID Driver Version "
 180                   DAC960_DriverVersion " of "
 181                   DAC960_DriverDate " *****\n", Controller);
 182   DAC960_Announce("Copyright 1998-2001 by Leonard N. Zubkoff "
 183                   "<lnz@dandelion.com>\n", Controller);
 184 }
 185
 186
 187 /*
 188   DAC960_Failure prints a standardized error message, and then returns false.
 189 */
 190
 191 static bool DAC960_Failure(DAC960_Controller_T *Controller,
 192                               unsigned char *ErrorMessage)
 193 {
 194   DAC960_Error("While configuring DAC960 PCI RAID Controller at\n",
 195                Controller);
 196   if (Controller->IO_Address == 0)
 197     DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
 198                  "PCI Address 0x%X\n", Controller,
 199                  Controller->Bus, Controller->Device,
 200                  Controller->Function, Controller->PCI_Address);
 201   else DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
 202                     "0x%X PCI Address 0x%X\n", Controller,
 203                     Controller->Bus, Controller->Device,
 204                     Controller->Function, Controller->IO_Address,
 205                     Controller->PCI_Address);
 206   DAC960_Error("%s FAILED - DETACHING\n", Controller, ErrorMessage);
 207   return false;
 208 }
 209
 210 /*
 211   init_dma_loaf() and slice_dma_loaf() are helper functions for
 212   aggregating the dma-mapped memory for a well-known collection of
 213   data structures that are of different lengths.
 214
 215   These routines don't guarantee any alignment.  The caller must
 216   include any space needed for alignment in the sizes of the structures
 217   that are passed in.
 218  */
 219
 220 static bool init_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf,
 221                                                                  size_t len)
 222 {
 223         void *cpu_addr;
 224         dma_addr_t dma_handle;
 225
 226         cpu_addr = pci_alloc_consistent(dev, len, &dma_handle);
 227         if (cpu_addr == NULL)
 228                 return false;
 229
 230         loaf->cpu_free = loaf->cpu_base = cpu_addr;
 231         loaf->dma_free =loaf->dma_base = dma_handle;
 232         loaf->length = len;
 233         memset(cpu_addr, 0, len);
 234         return true;
 235 }
 236
 237 static void *slice_dma_loaf(struct dma_loaf *loaf, size_t len,
 238                                         dma_addr_t *dma_handle)
 239 {
 240         void *cpu_end = loaf->cpu_free + len;
 241         void *cpu_addr = loaf->cpu_free;
 242
 243         BUG_ON(cpu_end > loaf->cpu_base + loaf->length);
 244         *dma_handle = loaf->dma_free;
 245         loaf->cpu_free = cpu_end;
 246         loaf->dma_free += len;
 247         return cpu_addr;
 248 }
 249
 250 static void free_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf_handle)
 251 {
 252         if (loaf_handle->cpu_base != NULL)
 253                 pci_free_consistent(dev, loaf_handle->length,
 254                         loaf_handle->cpu_base, loaf_handle->dma_base);
 255 }
 256
 257
 258 /*
 259   DAC960_CreateAuxiliaryStructures allocates and initializes the auxiliary
 260   data structures for Controller.  It returns true on success and false on
 261   failure.
 262 */
 263
 264 static bool DAC960_CreateAuxiliaryStructures(DAC960_Controller_T *Controller)
 265 {
 266   int CommandAllocationLength, CommandAllocationGroupSize;
 267   int CommandsRemaining = 0, CommandIdentifier, CommandGroupByteCount;
 268   void *AllocationPointer = NULL;
 269   void *ScatterGatherCPU = NULL;
 270   dma_addr_t ScatterGatherDMA;
 271   struct pci_pool *ScatterGatherPool;
 272   void *RequestSenseCPU = NULL;
 273   dma_addr_t RequestSenseDMA;
 274   struct pci_pool *RequestSensePool = NULL;
 275
 276   if (Controller->FirmwareType == DAC960_V1_Controller)
 277     {
 278       CommandAllocationLength = offsetof(DAC960_Command_T, V1.EndMarker);
 279       CommandAllocationGroupSize = DAC960_V1_CommandAllocationGroupSize;
 280       ScatterGatherPool = pci_pool_create("DAC960_V1_ScatterGather",
 281                 Controller->PCIDevice,
 282         DAC960_V1_ScatterGatherLimit * sizeof(DAC960_V1_ScatterGatherSegment_T),
 283         sizeof(DAC960_V1_ScatterGatherSegment_T), 0);
 284       if (ScatterGatherPool == NULL)
 285             return DAC960_Failure(Controller,
 286                         "AUXILIARY STRUCTURE CREATION (SG)");
 287       Controller->ScatterGatherPool = ScatterGatherPool;
 288     }
 289   else
 290     {
 291       CommandAllocationLength = offsetof(DAC960_Command_T, V2.EndMarker);
 292       CommandAllocationGroupSize = DAC960_V2_CommandAllocationGroupSize;
 293       ScatterGatherPool = pci_pool_create("DAC960_V2_ScatterGather",
 294                 Controller->PCIDevice,
 295         DAC960_V2_ScatterGatherLimit * sizeof(DAC960_V2_ScatterGatherSegment_T),
 296         sizeof(DAC960_V2_ScatterGatherSegment_T), 0);
 297       if (ScatterGatherPool == NULL)
 298             return DAC960_Failure(Controller,
 299                         "AUXILIARY STRUCTURE CREATION (SG)");
 300       RequestSensePool = pci_pool_create("DAC960_V2_RequestSense",
 301                 Controller->PCIDevice, sizeof(DAC960_SCSI_RequestSense_T),
 302                 sizeof(int), 0);
 303       if (RequestSensePool == NULL) {
 304             pci_pool_destroy(ScatterGatherPool);
 305             return DAC960_Failure(Controller,
 306                         "AUXILIARY STRUCTURE CREATION (SG)");
 307       }
 308       Controller->ScatterGatherPool = ScatterGatherPool;
 309       Controller->V2.RequestSensePool = RequestSensePool;
 310     }
 311   Controller->CommandAllocationGroupSize = CommandAllocationGroupSize;
 312   Controller->FreeCommands = NULL;
 313   for (CommandIdentifier = 1;
 314        CommandIdentifier <= Controller->DriverQueueDepth;
 315        CommandIdentifier++)
 316     {
 317       DAC960_Command_T *Command;
 318       if (--CommandsRemaining <= 0)
 319         {
 320           CommandsRemaining =
 321                 Controller->DriverQueueDepth - CommandIdentifier + 1;
 322           if (CommandsRemaining > CommandAllocationGroupSize)
 323                 CommandsRemaining = CommandAllocationGroupSize;
 324           CommandGroupByteCount =
 325                 CommandsRemaining * CommandAllocationLength;
 326           AllocationPointer = kzalloc(CommandGroupByteCount, GFP_ATOMIC);
 327           if (AllocationPointer == NULL)
 328                 return DAC960_Failure(Controller,
 329                                         "AUXILIARY STRUCTURE CREATION");
 330          }
 331       Command = (DAC960_Command_T *) AllocationPointer;
 332       AllocationPointer += CommandAllocationLength;
 333       Command->CommandIdentifier = CommandIdentifier;
 334       Command->Controller = Controller;
 335       Command->Next = Controller->FreeCommands;
 336       Controller->FreeCommands = Command;
 337       Controller->Commands[CommandIdentifier-1] = Command;
 338       ScatterGatherCPU = pci_pool_alloc(ScatterGatherPool, GFP_ATOMIC,
 339                                                         &ScatterGatherDMA);
 340       if (ScatterGatherCPU == NULL)
 341           return DAC960_Failure(Controller, "AUXILIARY STRUCTURE CREATION");
 342
 343       if (RequestSensePool != NULL) {
 344           RequestSenseCPU = pci_pool_alloc(RequestSensePool, GFP_ATOMIC,
 345                                                 &RequestSenseDMA);
 346           if (RequestSenseCPU == NULL) {
 347                 pci_pool_free(ScatterGatherPool, ScatterGatherCPU,
 348                                 ScatterGatherDMA);
 349                 return DAC960_Failure(Controller,
 350                                         "AUXILIARY STRUCTURE CREATION");
 351           }
 352         }
 353      if (Controller->FirmwareType == DAC960_V1_Controller) {
 354         Command->cmd_sglist = Command->V1.ScatterList;
 355         Command->V1.ScatterGatherList =
 356                 (DAC960_V1_ScatterGatherSegment_T *)ScatterGatherCPU;
 357         Command->V1.ScatterGatherListDMA = ScatterGatherDMA;
 358         sg_init_table(Command->cmd_sglist, DAC960_V1_ScatterGatherLimit);
 359       } else {
 360         Command->cmd_sglist = Command->V2.ScatterList;
 361         Command->V2.ScatterGatherList =
 362                 (DAC960_V2_ScatterGatherSegment_T *)ScatterGatherCPU;
 363         Command->V2.ScatterGatherListDMA = ScatterGatherDMA;
 364         Command->V2.RequestSense =
 365                                 (DAC960_SCSI_RequestSense_T *)RequestSenseCPU;
 366         Command->V2.RequestSenseDMA = RequestSenseDMA;
 367         sg_init_table(Command->cmd_sglist, DAC960_V2_ScatterGatherLimit);
 368       }
 369     }
 370   return true;
 371 }
 372
 373
 374 /*
 375   DAC960_DestroyAuxiliaryStructures deallocates the auxiliary data
 376   structures for Controller.
 377 */
 378
 379 static void DAC960_DestroyAuxiliaryStructures(DAC960_Controller_T *Controller)
 380 {
 381   int i;
 382   struct pci_pool *ScatterGatherPool = Controller->ScatterGatherPool;
 383   struct pci_pool *RequestSensePool = NULL;
 384   void *ScatterGatherCPU;
 385   dma_addr_t ScatterGatherDMA;
 386   void *RequestSenseCPU;
 387   dma_addr_t RequestSenseDMA;
 388   DAC960_Command_T *CommandGroup = NULL;
 389
 390
 391   if (Controller->FirmwareType == DAC960_V2_Controller)
 392         RequestSensePool = Controller->V2.RequestSensePool;
 393
 394   Controller->FreeCommands = NULL;
 395   for (i = 0; i < Controller->DriverQueueDepth; i++)
 396     {
 397       DAC960_Command_T *Command = Controller->Commands[i];
 398
 399       if (Command == NULL)
 400           continue;
 401
 402       if (Controller->FirmwareType == DAC960_V1_Controller) {
 403           ScatterGatherCPU = (void *)Command->V1.ScatterGatherList;
 404           ScatterGatherDMA = Command->V1.ScatterGatherListDMA;
 405           RequestSenseCPU = NULL;
 406           RequestSenseDMA = (dma_addr_t)0;
 407       } else {
 408           ScatterGatherCPU = (void *)Command->V2.ScatterGatherList;
 409           ScatterGatherDMA = Command->V2.ScatterGatherListDMA;
 410           RequestSenseCPU = (void *)Command->V2.RequestSense;
 411           RequestSenseDMA = Command->V2.RequestSenseDMA;
 412       }
 413       if (ScatterGatherCPU != NULL)
 414           pci_pool_free(ScatterGatherPool, ScatterGatherCPU, ScatterGatherDMA);
 415       if (RequestSenseCPU != NULL)
 416           pci_pool_free(RequestSensePool, RequestSenseCPU, RequestSenseDMA);
 417
 418       if ((Command->CommandIdentifier
 419            % Controller->CommandAllocationGroupSize) == 1) {
 420            /*
 421             * We can't free the group of commands until all of the
 422             * request sense and scatter gather dma structures are free.
 423             * Remember the beginning of the group, but don't free it
 424             * until we've reached the beginning of the next group.
 425             */
 426            kfree(CommandGroup);
 427            CommandGroup = Command;
 428       }
 429       Controller->Commands[i] = NULL;
 430     }
 431   kfree(CommandGroup);
 432
 433   if (Controller->CombinedStatusBuffer != NULL)
 434     {
 435       kfree(Controller->CombinedStatusBuffer);
 436       Controller->CombinedStatusBuffer = NULL;
 437       Controller->CurrentStatusBuffer = NULL;
 438     }
 439
 440   if (ScatterGatherPool != NULL)
 441         pci_pool_destroy(ScatterGatherPool);
 442   if (Controller->FirmwareType == DAC960_V1_Controller)
 443         return;
 444
 445   if (RequestSensePool != NULL)
 446         pci_pool_destroy(RequestSensePool);
 447
 448   for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
 449         kfree(Controller->V2.LogicalDeviceInformation[i]);
 450         Controller->V2.LogicalDeviceInformation[i] = NULL;
 451   }
 452
 453   for (i = 0; i < DAC960_V2_MaxPhysicalDevices; i++)
 454     {
 455       kfree(Controller->V2.PhysicalDeviceInformation[i]);
 456       Controller->V2.PhysicalDeviceInformation[i] = NULL;
 457       kfree(Controller->V2.InquiryUnitSerialNumber[i]);
 458       Controller->V2.InquiryUnitSerialNumber[i] = NULL;
 459     }
 460 }
 461
 462
 463 /*
 464   DAC960_V1_ClearCommand clears critical fields of Command for DAC960 V1
 465   Firmware Controllers.
 466 */
 467
 468 static inline void DAC960_V1_ClearCommand(DAC960_Command_T *Command)
 469 {
 470   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 471   memset(CommandMailbox, 0, sizeof(DAC960_V1_CommandMailbox_T));
 472   Command->V1.CommandStatus = 0;
 473 }
 474
 475
 476 /*
 477   DAC960_V2_ClearCommand clears critical fields of Command for DAC960 V2
 478   Firmware Controllers.
 479 */
 480
 481 static inline void DAC960_V2_ClearCommand(DAC960_Command_T *Command)
 482 {
 483   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 484   memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
 485   Command->V2.CommandStatus = 0;
 486 }
 487
 488
 489 /*
 490   DAC960_AllocateCommand allocates a Command structure from Controller's
 491   free list.  During driver initialization, a special initialization command
 492   has been placed on the free list to guarantee that command allocation can
 493   never fail.
 494 */
 495
 496 static inline DAC960_Command_T *DAC960_AllocateCommand(DAC960_Controller_T
 497                                                        *Controller)
 498 {
 499   DAC960_Command_T *Command = Controller->FreeCommands;
 500   if (Command == NULL) return NULL;
 501   Controller->FreeCommands = Command->Next;
 502   Command->Next = NULL;
 503   return Command;
 504 }
 505
 506
 507 /*
 508   DAC960_DeallocateCommand deallocates Command, returning it to Controller's
 509   free list.
 510 */
 511
 512 static inline void DAC960_DeallocateCommand(DAC960_Command_T *Command)
 513 {
 514   DAC960_Controller_T *Controller = Command->Controller;
 515
 516   Command->Request = NULL;
 517   Command->Next = Controller->FreeCommands;
 518   Controller->FreeCommands = Command;
 519 }
 520
 521
 522 /*
 523   DAC960_WaitForCommand waits for a wake_up on Controller's Command Wait Queue.
 524 */
 525
 526 static void DAC960_WaitForCommand(DAC960_Controller_T *Controller)
 527 {
 528   spin_unlock_irq(&Controller->queue_lock);
 529   __wait_event(Controller->CommandWaitQueue, Controller->FreeCommands);
 530   spin_lock_irq(&Controller->queue_lock);
 531 }
 532
 533 /*
 534   DAC960_GEM_QueueCommand queues Command for DAC960 GEM Series Controllers.
 535 */
 536
 537 static void DAC960_GEM_QueueCommand(DAC960_Command_T *Command)
 538 {
 539   DAC960_Controller_T *Controller = Command->Controller;
 540   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 541   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 542   DAC960_V2_CommandMailbox_T *NextCommandMailbox =
 543       Controller->V2.NextCommandMailbox;
 544
 545   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 546   DAC960_GEM_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 547
 548   if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
 549       Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
 550       DAC960_GEM_MemoryMailboxNewCommand(ControllerBaseAddress);
 551
 552   Controller->V2.PreviousCommandMailbox2 =
 553       Controller->V2.PreviousCommandMailbox1;
 554   Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
 555
 556   if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
 557       NextCommandMailbox = Controller->V2.FirstCommandMailbox;
 558
 559   Controller->V2.NextCommandMailbox = NextCommandMailbox;
 560 }
 561
 562 /*
 563   DAC960_BA_QueueCommand queues Command for DAC960 BA Series Controllers.
 564 */
 565
 566 static void DAC960_BA_QueueCommand(DAC960_Command_T *Command)
 567 {
 568   DAC960_Controller_T *Controller = Command->Controller;
 569   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 570   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 571   DAC960_V2_CommandMailbox_T *NextCommandMailbox =
 572     Controller->V2.NextCommandMailbox;
 573   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 574   DAC960_BA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 575   if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
 576       Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
 577     DAC960_BA_MemoryMailboxNewCommand(ControllerBaseAddress);
 578   Controller->V2.PreviousCommandMailbox2 =
 579     Controller->V2.PreviousCommandMailbox1;
 580   Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
 581   if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
 582     NextCommandMailbox = Controller->V2.FirstCommandMailbox;
 583   Controller->V2.NextCommandMailbox = NextCommandMailbox;
 584 }
 585
 586
 587 /*
 588   DAC960_LP_QueueCommand queues Command for DAC960 LP Series Controllers.
 589 */
 590
 591 static void DAC960_LP_QueueCommand(DAC960_Command_T *Command)
 592 {
 593   DAC960_Controller_T *Controller = Command->Controller;
 594   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 595   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 596   DAC960_V2_CommandMailbox_T *NextCommandMailbox =
 597     Controller->V2.NextCommandMailbox;
 598   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 599   DAC960_LP_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 600   if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
 601       Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
 602     DAC960_LP_MemoryMailboxNewCommand(ControllerBaseAddress);
 603   Controller->V2.PreviousCommandMailbox2 =
 604     Controller->V2.PreviousCommandMailbox1;
 605   Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
 606   if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
 607     NextCommandMailbox = Controller->V2.FirstCommandMailbox;
 608   Controller->V2.NextCommandMailbox = NextCommandMailbox;
 609 }
 610
 611
 612 /*
 613   DAC960_LA_QueueCommandDualMode queues Command for DAC960 LA Series
 614   Controllers with Dual Mode Firmware.
 615 */
 616
 617 static void DAC960_LA_QueueCommandDualMode(DAC960_Command_T *Command)
 618 {
 619   DAC960_Controller_T *Controller = Command->Controller;
 620   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 621   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 622   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 623     Controller->V1.NextCommandMailbox;
 624   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 625   DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 626   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 627       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 628     DAC960_LA_MemoryMailboxNewCommand(ControllerBaseAddress);
 629   Controller->V1.PreviousCommandMailbox2 =
 630     Controller->V1.PreviousCommandMailbox1;
 631   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 632   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 633     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 634   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 635 }
 636
 637
 638 /*
 639   DAC960_LA_QueueCommandSingleMode queues Command for DAC960 LA Series
 640   Controllers with Single Mode Firmware.
 641 */
 642
 643 static void DAC960_LA_QueueCommandSingleMode(DAC960_Command_T *Command)
 644 {
 645   DAC960_Controller_T *Controller = Command->Controller;
 646   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 647   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 648   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 649     Controller->V1.NextCommandMailbox;
 650   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 651   DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 652   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 653       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 654     DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
 655   Controller->V1.PreviousCommandMailbox2 =
 656     Controller->V1.PreviousCommandMailbox1;
 657   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 658   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 659     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 660   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 661 }
 662
 663
 664 /*
 665   DAC960_PG_QueueCommandDualMode queues Command for DAC960 PG Series
 666   Controllers with Dual Mode Firmware.
 667 */
 668
 669 static void DAC960_PG_QueueCommandDualMode(DAC960_Command_T *Command)
 670 {
 671   DAC960_Controller_T *Controller = Command->Controller;
 672   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 673   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 674   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 675     Controller->V1.NextCommandMailbox;
 676   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 677   DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 678   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 679       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 680     DAC960_PG_MemoryMailboxNewCommand(ControllerBaseAddress);
 681   Controller->V1.PreviousCommandMailbox2 =
 682     Controller->V1.PreviousCommandMailbox1;
 683   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 684   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 685     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 686   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 687 }
 688
 689
 690 /*
 691   DAC960_PG_QueueCommandSingleMode queues Command for DAC960 PG Series
 692   Controllers with Single Mode Firmware.
 693 */
 694
 695 static void DAC960_PG_QueueCommandSingleMode(DAC960_Command_T *Command)
 696 {
 697   DAC960_Controller_T *Controller = Command->Controller;
 698   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 699   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 700   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 701     Controller->V1.NextCommandMailbox;
 702   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 703   DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 704   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 705       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 706     DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
 707   Controller->V1.PreviousCommandMailbox2 =
 708     Controller->V1.PreviousCommandMailbox1;
 709   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 710   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 711     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 712   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 713 }
 714
 715
 716 /*
 717   DAC960_PD_QueueCommand queues Command for DAC960 PD Series Controllers.
 718 */
 719
 720 static void DAC960_PD_QueueCommand(DAC960_Command_T *Command)
 721 {
 722   DAC960_Controller_T *Controller = Command->Controller;
 723   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 724   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 725   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 726   while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
 727     udelay(1);
 728   DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
 729   DAC960_PD_NewCommand(ControllerBaseAddress);
 730 }
 731
 732
 733 /*
 734   DAC960_P_QueueCommand queues Command for DAC960 P Series Controllers.
 735 */
 736
 737 static void DAC960_P_QueueCommand(DAC960_Command_T *Command)
 738 {
 739   DAC960_Controller_T *Controller = Command->Controller;
 740   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 741   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 742   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 743   switch (CommandMailbox->Common.CommandOpcode)
 744     {
 745     case DAC960_V1_Enquiry:
 746       CommandMailbox->Common.CommandOpcode = DAC960_V1_Enquiry_Old;
 747       break;
 748     case DAC960_V1_GetDeviceState:
 749       CommandMailbox->Common.CommandOpcode = DAC960_V1_GetDeviceState_Old;
 750       break;
 751     case DAC960_V1_Read:
 752       CommandMailbox->Common.CommandOpcode = DAC960_V1_Read_Old;
 753       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 754       break;
 755     case DAC960_V1_Write:
 756       CommandMailbox->Common.CommandOpcode = DAC960_V1_Write_Old;
 757       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 758       break;
 759     case DAC960_V1_ReadWithScatterGather:
 760       CommandMailbox->Common.CommandOpcode =
 761         DAC960_V1_ReadWithScatterGather_Old;
 762       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 763       break;
 764     case DAC960_V1_WriteWithScatterGather:
 765       CommandMailbox->Common.CommandOpcode =
 766         DAC960_V1_WriteWithScatterGather_Old;
 767       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 768       break;
 769     default:
 770       break;
 771     }
 772   while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
 773     udelay(1);
 774   DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
 775   DAC960_PD_NewCommand(ControllerBaseAddress);
 776 }
 777
 778
 779 /*
 780   DAC960_ExecuteCommand executes Command and waits for completion.
 781 */
 782
 783 static void DAC960_ExecuteCommand(DAC960_Command_T *Command)
 784 {
 785   DAC960_Controller_T *Controller = Command->Controller;
 786   DECLARE_COMPLETION_ONSTACK(Completion);
 787   unsigned long flags;
 788   Command->Completion = &Completion;
 789
 790   spin_lock_irqsave(&Controller->queue_lock, flags);
 791   DAC960_QueueCommand(Command);
 792   spin_unlock_irqrestore(&Controller->queue_lock, flags);
 793
 794   if (in_interrupt())
 795           return;
 796   wait_for_completion(&Completion);
 797 }
 798
 799
 800 /*
 801   DAC960_V1_ExecuteType3 executes a DAC960 V1 Firmware Controller Type 3
 802   Command and waits for completion.  It returns true on success and false
 803   on failure.
 804 */
 805
 806 static bool DAC960_V1_ExecuteType3(DAC960_Controller_T *Controller,
 807                                       DAC960_V1_CommandOpcode_T CommandOpcode,
 808                                       dma_addr_t DataDMA)
 809 {
 810   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 811   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 812   DAC960_V1_CommandStatus_T CommandStatus;
 813   DAC960_V1_ClearCommand(Command);
 814   Command->CommandType = DAC960_ImmediateCommand;
 815   CommandMailbox->Type3.CommandOpcode = CommandOpcode;
 816   CommandMailbox->Type3.BusAddress = DataDMA;
 817   DAC960_ExecuteCommand(Command);
 818   CommandStatus = Command->V1.CommandStatus;
 819   DAC960_DeallocateCommand(Command);
 820   return (CommandStatus == DAC960_V1_NormalCompletion);
 821 }
 822
 823
 824 /*
 825   DAC960_V1_ExecuteTypeB executes a DAC960 V1 Firmware Controller Type 3B
 826   Command and waits for completion.  It returns true on success and false
 827   on failure.
 828 */
 829
 830 static bool DAC960_V1_ExecuteType3B(DAC960_Controller_T *Controller,
 831                                        DAC960_V1_CommandOpcode_T CommandOpcode,
 832                                        unsigned char CommandOpcode2,
 833                                        dma_addr_t DataDMA)
 834 {
 835   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 836   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 837   DAC960_V1_CommandStatus_T CommandStatus;
 838   DAC960_V1_ClearCommand(Command);
 839   Command->CommandType = DAC960_ImmediateCommand;
 840   CommandMailbox->Type3B.CommandOpcode = CommandOpcode;
 841   CommandMailbox->Type3B.CommandOpcode2 = CommandOpcode2;
 842   CommandMailbox->Type3B.BusAddress = DataDMA;
 843   DAC960_ExecuteCommand(Command);
 844   CommandStatus = Command->V1.CommandStatus;
 845   DAC960_DeallocateCommand(Command);
 846   return (CommandStatus == DAC960_V1_NormalCompletion);
 847 }
 848
 849
 850 /*
 851   DAC960_V1_ExecuteType3D executes a DAC960 V1 Firmware Controller Type 3D
 852   Command and waits for completion.  It returns true on success and false
 853   on failure.
 854 */
 855
 856 static bool DAC960_V1_ExecuteType3D(DAC960_Controller_T *Controller,
 857                                        DAC960_V1_CommandOpcode_T CommandOpcode,
 858                                        unsigned char Channel,
 859                                        unsigned char TargetID,
 860                                        dma_addr_t DataDMA)
 861 {
 862   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 863   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 864   DAC960_V1_CommandStatus_T CommandStatus;
 865   DAC960_V1_ClearCommand(Command);
 866   Command->CommandType = DAC960_ImmediateCommand;
 867   CommandMailbox->Type3D.CommandOpcode = CommandOpcode;
 868   CommandMailbox->Type3D.Channel = Channel;
 869   CommandMailbox->Type3D.TargetID = TargetID;
 870   CommandMailbox->Type3D.BusAddress = DataDMA;
 871   DAC960_ExecuteCommand(Command);
 872   CommandStatus = Command->V1.CommandStatus;
 873   DAC960_DeallocateCommand(Command);
 874   return (CommandStatus == DAC960_V1_NormalCompletion);
 875 }
 876
 877
 878 /*
 879   DAC960_V2_GeneralInfo executes a DAC960 V2 Firmware General Information
 880   Reading IOCTL Command and waits for completion.  It returns true on success
 881   and false on failure.
 882
 883   Return data in The controller's HealthStatusBuffer, which is dma-able memory
 884 */
 885
 886 static bool DAC960_V2_GeneralInfo(DAC960_Controller_T *Controller)
 887 {
 888   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 889   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 890   DAC960_V2_CommandStatus_T CommandStatus;
 891   DAC960_V2_ClearCommand(Command);
 892   Command->CommandType = DAC960_ImmediateCommand;
 893   CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
 894   CommandMailbox->Common.CommandControlBits
 895                         .DataTransferControllerToHost = true;
 896   CommandMailbox->Common.CommandControlBits
 897                         .NoAutoRequestSense = true;
 898   CommandMailbox->Common.DataTransferSize = sizeof(DAC960_V2_HealthStatusBuffer_T);
 899   CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_GetHealthStatus;
 900   CommandMailbox->Common.DataTransferMemoryAddress
 901                         .ScatterGatherSegments[0]
 902                         .SegmentDataPointer =
 903     Controller->V2.HealthStatusBufferDMA;
 904   CommandMailbox->Common.DataTransferMemoryAddress
 905                         .ScatterGatherSegments[0]
 906                         .SegmentByteCount =
 907     CommandMailbox->Common.DataTransferSize;
 908   DAC960_ExecuteCommand(Command);
 909   CommandStatus = Command->V2.CommandStatus;
 910   DAC960_DeallocateCommand(Command);
 911   return (CommandStatus == DAC960_V2_NormalCompletion);
 912 }
 913
 914
 915 /*
 916   DAC960_V2_ControllerInfo executes a DAC960 V2 Firmware Controller
 917   Information Reading IOCTL Command and waits for completion.  It returns
 918   true on success and false on failure.
 919
 920   Data is returned in the controller's V2.NewControllerInformation dma-able
 921   memory buffer.
 922 */
 923
 924 static bool DAC960_V2_NewControllerInfo(DAC960_Controller_T *Controller)
 925 {
 926   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 927   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 928   DAC960_V2_CommandStatus_T CommandStatus;
 929   DAC960_V2_ClearCommand(Command);
 930   Command->CommandType = DAC960_ImmediateCommand;
 931   CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
 932   CommandMailbox->ControllerInfo.CommandControlBits
 933                                 .DataTransferControllerToHost = true;
 934   CommandMailbox->ControllerInfo.CommandControlBits
 935                                 .NoAutoRequestSense = true;
 936   CommandMailbox->ControllerInfo.DataTransferSize = sizeof(DAC960_V2_ControllerInfo_T);
 937   CommandMailbox->ControllerInfo.ControllerNumber = 0;
 938   CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
 939   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
 940                                 .ScatterGatherSegments[0]
 941                                 .SegmentDataPointer =
 942         Controller->V2.NewControllerInformationDMA;
 943   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
 944                                 .ScatterGatherSegments[0]
 945                                 .SegmentByteCount =
 946     CommandMailbox->ControllerInfo.DataTransferSize;
 947   DAC960_ExecuteCommand(Command);
 948   CommandStatus = Command->V2.CommandStatus;
 949   DAC960_DeallocateCommand(Command);
 950   return (CommandStatus == DAC960_V2_NormalCompletion);
 951 }
 952
 953
 954 /*
 955   DAC960_V2_LogicalDeviceInfo executes a DAC960 V2 Firmware Controller Logical
 956   Device Information Reading IOCTL Command and waits for completion.  It
 957   returns true on success and false on failure.
 958
 959   Data is returned in the controller's V2.NewLogicalDeviceInformation
 960 */
 961
 962 static bool DAC960_V2_NewLogicalDeviceInfo(DAC960_Controller_T *Controller,
 963                                            unsigned short LogicalDeviceNumber)
 964 {
 965   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 966   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 967   DAC960_V2_CommandStatus_T CommandStatus;
 968
 969   DAC960_V2_ClearCommand(Command);
 970   Command->CommandType = DAC960_ImmediateCommand;
 971   CommandMailbox->LogicalDeviceInfo.CommandOpcode =
 972                                 DAC960_V2_IOCTL;
 973   CommandMailbox->LogicalDeviceInfo.CommandControlBits
 974                                    .DataTransferControllerToHost = true;
 975   CommandMailbox->LogicalDeviceInfo.CommandControlBits
 976                                    .NoAutoRequestSense = true;
 977   CommandMailbox->LogicalDeviceInfo.DataTransferSize =
 978                                 sizeof(DAC960_V2_LogicalDeviceInfo_T);
 979   CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
 980     LogicalDeviceNumber;
 981   CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode = DAC960_V2_GetLogicalDeviceInfoValid;
 982   CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
 983                                    .ScatterGatherSegments[0]
 984                                    .SegmentDataPointer =
 985         Controller->V2.NewLogicalDeviceInformationDMA;
 986   CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
 987                                    .ScatterGatherSegments[0]
 988                                    .SegmentByteCount =
 989     CommandMailbox->LogicalDeviceInfo.DataTransferSize;
 990   DAC960_ExecuteCommand(Command);
 991   CommandStatus = Command->V2.CommandStatus;
 992   DAC960_DeallocateCommand(Command);
 993   return (CommandStatus == DAC960_V2_NormalCompletion);
 994 }
 995
 996
 997 /*
 998   DAC960_V2_PhysicalDeviceInfo executes a DAC960 V2 Firmware Controller "Read
 999   Physical Device Information" IOCTL Command and waits for completion.  It
1000   returns true on success and false on failure.
1001
1002   The Channel, TargetID, LogicalUnit arguments should be 0 the first time
1003   this function is called for a given controller.  This will return data
1004   for the "first" device on that controller.  The returned data includes a
1005   Channel, TargetID, LogicalUnit that can be passed in to this routine to
1006   get data for the NEXT device on that controller.
1007
1008   Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
1009   memory buffer.
1010
1011 */
1012
1013 static bool DAC960_V2_NewPhysicalDeviceInfo(DAC960_Controller_T *Controller,
1014                                             unsigned char Channel,
1015                                             unsigned char TargetID,
1016                                             unsigned char LogicalUnit)
1017 {
1018   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
1019   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
1020   DAC960_V2_CommandStatus_T CommandStatus;
1021
1022   DAC960_V2_ClearCommand(Command);
1023   Command->CommandType = DAC960_ImmediateCommand;
1024   CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
1025   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
1026                                     .DataTransferControllerToHost = true;
1027   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
1028                                     .NoAutoRequestSense = true;
1029   CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
1030                                 sizeof(DAC960_V2_PhysicalDeviceInfo_T);
1031   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit = LogicalUnit;
1032   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
1033   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
1034   CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
1035                                         DAC960_V2_GetPhysicalDeviceInfoValid;
1036   CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
1037                                     .ScatterGatherSegments[0]
1038                                     .SegmentDataPointer =
1039                                         Controller->V2.NewPhysicalDeviceInformationDMA;
1040   CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
1041                                     .ScatterGatherSegments[0]
1042                                     .SegmentByteCount =
1043     CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
1044   DAC960_ExecuteCommand(Command);
1045   CommandStatus = Command->V2.CommandStatus;
1046   DAC960_DeallocateCommand(Command);
1047   return (CommandStatus == DAC960_V2_NormalCompletion);
1048 }
1049
1050
1051 static void DAC960_V2_ConstructNewUnitSerialNumber(
1052         DAC960_Controller_T *Controller,
1053         DAC960_V2_CommandMailbox_T *CommandMailbox, int Channel, int TargetID,
1054         int LogicalUnit)
1055 {
1056       CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10_Passthru;
1057       CommandMailbox->SCSI_10.CommandControlBits
1058                              .DataTransferControllerToHost = true;
1059       CommandMailbox->SCSI_10.CommandControlBits
1060                              .NoAutoRequestSense = true;
1061       CommandMailbox->SCSI_10.DataTransferSize =
1062         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
1063       CommandMailbox->SCSI_10.PhysicalDevice.LogicalUnit = LogicalUnit;
1064       CommandMailbox->SCSI_10.PhysicalDevice.TargetID = TargetID;
1065       CommandMailbox->SCSI_10.PhysicalDevice.Channel = Channel;
1066       CommandMailbox->SCSI_10.CDBLength = 6;
1067       CommandMailbox->SCSI_10.SCSI_CDB[0] = 0x12; /* INQUIRY */
1068       CommandMailbox->SCSI_10.SCSI_CDB[1] = 1; /* EVPD = 1 */
1069       CommandMailbox->SCSI_10.SCSI_CDB[2] = 0x80; /* Page Code */
1070       CommandMailbox->SCSI_10.SCSI_CDB[3] = 0; /* Reserved */
1071       CommandMailbox->SCSI_10.SCSI_CDB[4] =
1072         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
1073       CommandMailbox->SCSI_10.SCSI_CDB[5] = 0; /* Control */
1074       CommandMailbox->SCSI_10.DataTransferMemoryAddress
1075                              .ScatterGatherSegments[0]
1076                              .SegmentDataPointer =
1077                 Controller->V2.NewInquiryUnitSerialNumberDMA;
1078       CommandMailbox->SCSI_10.DataTransferMemoryAddress
1079                              .ScatterGatherSegments[0]
1080                              .SegmentByteCount =
1081                 CommandMailbox->SCSI_10.DataTransferSize;
1082 }
1083
1084
1085 /*
1086   DAC960_V2_NewUnitSerialNumber executes an SCSI pass-through
1087   Inquiry command to a SCSI device identified by Channel number,
1088   Target id, Logical Unit Number.  This function Waits for completion
1089   of the command.
1090
1091   The return data includes Unit Serial Number information for the
1092   specified device.
1093
1094   Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
1095   memory buffer.
1096 */
1097
1098 static bool DAC960_V2_NewInquiryUnitSerialNumber(DAC960_Controller_T *Controller,
1099                         int Channel, int TargetID, int LogicalUnit)
1100 {
1101       DAC960_Command_T *Command;
1102       DAC960_V2_CommandMailbox_T *CommandMailbox;
1103       DAC960_V2_CommandStatus_T CommandStatus;
1104
1105       Command = DAC960_AllocateCommand(Controller);
1106       CommandMailbox = &Command->V2.CommandMailbox;
1107       DAC960_V2_ClearCommand(Command);
1108       Command->CommandType = DAC960_ImmediateCommand;
1109
1110       DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
1111                         Channel, TargetID, LogicalUnit);
1112
1113       DAC960_ExecuteCommand(Command);
1114       CommandStatus = Command->V2.CommandStatus;
1115       DAC960_DeallocateCommand(Command);
1116       return (CommandStatus == DAC960_V2_NormalCompletion);
1117 }
1118
1119
1120 /*
1121   DAC960_V2_DeviceOperation executes a DAC960 V2 Firmware Controller Device
1122   Operation IOCTL Command and waits for completion.  It returns true on
1123   success and false on failure.
1124 */
1125
1126 static bool DAC960_V2_DeviceOperation(DAC960_Controller_T *Controller,
1127                                          DAC960_V2_IOCTL_Opcode_T IOCTL_Opcode,
1128                                          DAC960_V2_OperationDevice_T
1129                                            OperationDevice)
1130 {
1131   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
1132   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
1133   DAC960_V2_CommandStatus_T CommandStatus;
1134   DAC960_V2_ClearCommand(Command);
1135   Command->CommandType = DAC960_ImmediateCommand;
1136   CommandMailbox->DeviceOperation.CommandOpcode = DAC960_V2_IOCTL;
1137   CommandMailbox->DeviceOperation.CommandControlBits
1138                                  .DataTransferControllerToHost = true;
1139   CommandMailbox->DeviceOperation.CommandControlBits
1140                                  .NoAutoRequestSense = true;
1141   CommandMailbox->DeviceOperation.IOCTL_Opcode = IOCTL_Opcode;
1142   CommandMailbox->DeviceOperation.OperationDevice = OperationDevice;
1143   DAC960_ExecuteCommand(Command);
1144   CommandStatus = Command->V2.CommandStatus;
1145   DAC960_DeallocateCommand(Command);
1146   return (CommandStatus == DAC960_V2_NormalCompletion);
1147 }
1148
1149
1150 /*
1151   DAC960_V1_EnableMemoryMailboxInterface enables the Memory Mailbox Interface
1152   for DAC960 V1 Firmware Controllers.
1153
1154   PD and P controller types have no memory mailbox, but still need the
1155   other dma mapped memory.
1156 */
1157
1158 static bool DAC960_V1_EnableMemoryMailboxInterface(DAC960_Controller_T
1159                                                       *Controller)
1160 {
1161   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
1162   DAC960_HardwareType_T hw_type = Controller->HardwareType;
1163   struct pci_dev *PCI_Device = Controller->PCIDevice;
1164   struct dma_loaf *DmaPages = &Controller->DmaPages;
1165   size_t DmaPagesSize;
1166   size_t CommandMailboxesSize;
1167   size_t StatusMailboxesSize;
1168
1169   DAC960_V1_CommandMailbox_T *CommandMailboxesMemory;
1170   dma_addr_t CommandMailboxesMemoryDMA;
1171
1172   DAC960_V1_StatusMailbox_T *StatusMailboxesMemory;
1173   dma_addr_t StatusMailboxesMemoryDMA;
1174
1175   DAC960_V1_CommandMailbox_T CommandMailbox;
1176   DAC960_V1_CommandStatus_T CommandStatus;
1177   int TimeoutCounter;
1178   int i;
1179
1180
1181   if (pci_set_dma_mask(Controller->PCIDevice, DMA_BIT_MASK(32)))
1182         return DAC960_Failure(Controller, "DMA mask out of range");
1183   Controller->BounceBufferLimit = DMA_BIT_MASK(32);
1184
1185   if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller)) {
1186     CommandMailboxesSize =  0;
1187     StatusMailboxesSize = 0;
1188   } else {
1189     CommandMailboxesSize =  DAC960_V1_CommandMailboxCount * sizeof(DAC960_V1_CommandMailbox_T);
1190     StatusMailboxesSize = DAC960_V1_StatusMailboxCount * sizeof(DAC960_V1_StatusMailbox_T);
1191   }
1192   DmaPagesSize = CommandMailboxesSize + StatusMailboxesSize +
1193         sizeof(DAC960_V1_DCDB_T) + sizeof(DAC960_V1_Enquiry_T) +
1194         sizeof(DAC960_V1_ErrorTable_T) + sizeof(DAC960_V1_EventLogEntry_T) +
1195         sizeof(DAC960_V1_RebuildProgress_T) +
1196         sizeof(DAC960_V1_LogicalDriveInformationArray_T) +
1197         sizeof(DAC960_V1_BackgroundInitializationStatus_T) +
1198         sizeof(DAC960_V1_DeviceState_T) + sizeof(DAC960_SCSI_Inquiry_T) +
1199         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
1200
1201   if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize))
1202         return false;
1203
1204
1205   if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller))
1206         goto skip_mailboxes;
1207
1208   CommandMailboxesMemory = slice_dma_loaf(DmaPages,
1209                 CommandMailboxesSize, &CommandMailboxesMemoryDMA);
1210
1211   /* These are the base addresses for the command memory mailbox array */
1212   Controller->V1.FirstCommandMailbox = CommandMailboxesMemory;
1213   Controller->V1.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
1214
1215   CommandMailboxesMemory += DAC960_V1_CommandMailboxCount - 1;
1216   Controller->V1.LastCommandMailbox = CommandMailboxesMemory;
1217   Controller->V1.NextCommandMailbox = Controller->V1.FirstCommandMailbox;
1218   Controller->V1.PreviousCommandMailbox1 = Controller->V1.LastCommandMailbox;
1219   Controller->V1.PreviousCommandMailbox2 =
1220                                         Controller->V1.LastCommandMailbox - 1;
1221
1222   /* These are the base addresses for the status memory mailbox array */
1223   StatusMailboxesMemory = slice_dma_loaf(DmaPages,
1224                 StatusMailboxesSize, &StatusMailboxesMemoryDMA);
1225
1226   Controller->V1.FirstStatusMailbox = StatusMailboxesMemory;
1227   Controller->V1.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
1228   StatusMailboxesMemory += DAC960_V1_StatusMailboxCount - 1;
1229   Controller->V1.LastStatusMailbox = StatusMailboxesMemory;
1230   Controller->V1.NextStatusMailbox = Controller->V1.FirstStatusMailbox;
1231
1232 skip_mailboxes:
1233   Controller->V1.MonitoringDCDB = slice_dma_loaf(DmaPages,
1234                 sizeof(DAC960_V1_DCDB_T),
1235                 &Controller->V1.MonitoringDCDB_DMA);
1236
1237   Controller->V1.NewEnquiry = slice_dma_loaf(DmaPages,
1238                 sizeof(DAC960_V1_Enquiry_T),
1239                 &Controller->V1.NewEnquiryDMA);
1240
1241   Controller->V1.NewErrorTable = slice_dma_loaf(DmaPages,
1242                 sizeof(DAC960_V1_ErrorTable_T),
1243                 &Controller->V1.NewErrorTableDMA);
1244
1245   Controller->V1.EventLogEntry = slice_dma_loaf(DmaPages,
1246                 sizeof(DAC960_V1_EventLogEntry_T),
1247                 &Controller->V1.EventLogEntryDMA);
1248
1249   Controller->V1.RebuildProgress = slice_dma_loaf(DmaPages,
1250                 sizeof(DAC960_V1_RebuildProgress_T),
1251                 &Controller->V1.RebuildProgressDMA);
1252
1253   Controller->V1.NewLogicalDriveInformation = slice_dma_loaf(DmaPages,
1254                 sizeof(DAC960_V1_LogicalDriveInformationArray_T),
1255                 &Controller->V1.NewLogicalDriveInformationDMA);
1256
1257   Controller->V1.BackgroundInitializationStatus = slice_dma_loaf(DmaPages,
1258                 sizeof(DAC960_V1_BackgroundInitializationStatus_T),
1259                 &Controller->V1.BackgroundInitializationStatusDMA);
1260
1261   Controller->V1.NewDeviceState = slice_dma_loaf(DmaPages,
1262                 sizeof(DAC960_V1_DeviceState_T),
1263                 &Controller->V1.NewDeviceStateDMA);
1264
1265   Controller->V1.NewInquiryStandardData = slice_dma_loaf(DmaPages,
1266                 sizeof(DAC960_SCSI_Inquiry_T),
1267                 &Controller->V1.NewInquiryStandardDataDMA);
1268
1269   Controller->V1.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
1270                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1271                 &Controller->V1.NewInquiryUnitSerialNumberDMA);
1272
1273   if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller))
1274         return true;
1275
1276   /* Enable the Memory Mailbox Interface. */
1277   Controller->V1.DualModeMemoryMailboxInterface = true;
1278   CommandMailbox.TypeX.CommandOpcode = 0x2B;
1279   CommandMailbox.TypeX.CommandIdentifier = 0;
1280   CommandMailbox.TypeX.CommandOpcode2 = 0x14;
1281   CommandMailbox.TypeX.CommandMailboxesBusAddress =
1282                                 Controller->V1.FirstCommandMailboxDMA;
1283   CommandMailbox.TypeX.StatusMailboxesBusAddress =
1284                                 Controller->V1.FirstStatusMailboxDMA;
1285 #define TIMEOUT_COUNT 1000000
1286
1287   for (i = 0; i < 2; i++)
1288     switch (Controller->HardwareType)
1289       {
1290       case DAC960_LA_Controller:
1291         TimeoutCounter = TIMEOUT_COUNT;
1292         while (--TimeoutCounter >= 0)
1293           {
1294             if (!DAC960_LA_HardwareMailboxFullP(ControllerBaseAddress))
1295               break;
1296             udelay(10);
1297           }
1298         if (TimeoutCounter < 0) return false;
1299         DAC960_LA_WriteHardwareMailbox(ControllerBaseAddress, &CommandMailbox);
1300         DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
1301         TimeoutCounter = TIMEOUT_COUNT;
1302         while (--TimeoutCounter >= 0)
1303           {
1304             if (DAC960_LA_HardwareMailboxStatusAvailableP(
1305                   ControllerBaseAddress))
1306               break;
1307             udelay(10);
1308           }
1309         if (TimeoutCounter < 0) return false;
1310         CommandStatus = DAC960_LA_ReadStatusRegister(ControllerBaseAddress);
1311         DAC960_LA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1312         DAC960_LA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1313         if (CommandStatus == DAC960_V1_NormalCompletion) return true;
1314         Controller->V1.DualModeMemoryMailboxInterface = false;
1315         CommandMailbox.TypeX.CommandOpcode2 = 0x10;
1316         break;
1317       case DAC960_PG_Controller:
1318         TimeoutCounter = TIMEOUT_COUNT;
1319         while (--TimeoutCounter >= 0)
1320           {
1321             if (!DAC960_PG_HardwareMailboxFullP(ControllerBaseAddress))
1322               break;
1323             udelay(10);
1324           }
1325         if (TimeoutCounter < 0) return false;
1326         DAC960_PG_WriteHardwareMailbox(ControllerBaseAddress, &CommandMailbox);
1327         DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
1328
1329         TimeoutCounter = TIMEOUT_COUNT;
1330         while (--TimeoutCounter >= 0)
1331           {
1332             if (DAC960_PG_HardwareMailboxStatusAvailableP(
1333                   ControllerBaseAddress))
1334               break;
1335             udelay(10);
1336           }
1337         if (TimeoutCounter < 0) return false;
1338         CommandStatus = DAC960_PG_ReadStatusRegister(ControllerBaseAddress);
1339         DAC960_PG_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1340         DAC960_PG_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1341         if (CommandStatus == DAC960_V1_NormalCompletion) return true;
1342         Controller->V1.DualModeMemoryMailboxInterface = false;
1343         CommandMailbox.TypeX.CommandOpcode2 = 0x10;
1344         break;
1345       default:
1346         DAC960_Failure(Controller, "Unknown Controller Type\n");
1347         break;
1348       }
1349   return false;
1350 }
1351
1352
1353 /*
1354   DAC960_V2_EnableMemoryMailboxInterface enables the Memory Mailbox Interface
1355   for DAC960 V2 Firmware Controllers.
1356
1357   Aggregate the space needed for the controller's memory mailbox and
1358   the other data structures that will be targets of dma transfers with
1359   the controller.  Allocate a dma-mapped region of memory to hold these
1360   structures.  Then, save CPU pointers and dma_addr_t values to reference
1361   the structures that are contained in that region.
1362 */
1363
1364 static bool DAC960_V2_EnableMemoryMailboxInterface(DAC960_Controller_T
1365                                                       *Controller)
1366 {
1367   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
1368   struct pci_dev *PCI_Device = Controller->PCIDevice;
1369   struct dma_loaf *DmaPages = &Controller->DmaPages;
1370   size_t DmaPagesSize;
1371   size_t CommandMailboxesSize;
1372   size_t StatusMailboxesSize;
1373
1374   DAC960_V2_CommandMailbox_T *CommandMailboxesMemory;
1375   dma_addr_t CommandMailboxesMemoryDMA;
1376
1377   DAC960_V2_StatusMailbox_T *StatusMailboxesMemory;
1378   dma_addr_t StatusMailboxesMemoryDMA;
1379
1380   DAC960_V2_CommandMailbox_T *CommandMailbox;
1381   dma_addr_t    CommandMailboxDMA;
1382   DAC960_V2_CommandStatus_T CommandStatus;
1383
1384         if (!pci_set_dma_mask(Controller->PCIDevice, DMA_BIT_MASK(64)))
1385                 Controller->BounceBufferLimit = DMA_BIT_MASK(64);
1386         else if (!pci_set_dma_mask(Controller->PCIDevice, DMA_BIT_MASK(32)))
1387                 Controller->BounceBufferLimit = DMA_BIT_MASK(32);
1388         else
1389                 return DAC960_Failure(Controller, "DMA mask out of range");
1390
1391   /* This is a temporary dma mapping, used only in the scope of this function */
1392   CommandMailbox = pci_alloc_consistent(PCI_Device,
1393                 sizeof(DAC960_V2_CommandMailbox_T), &CommandMailboxDMA);
1394   if (CommandMailbox == NULL)
1395           return false;
1396
1397   CommandMailboxesSize = DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T);
1398   StatusMailboxesSize = DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T);
1399   DmaPagesSize =
1400     CommandMailboxesSize + StatusMailboxesSize +
1401     sizeof(DAC960_V2_HealthStatusBuffer_T) +
1402     sizeof(DAC960_V2_ControllerInfo_T) +
1403     sizeof(DAC960_V2_LogicalDeviceInfo_T) +
1404     sizeof(DAC960_V2_PhysicalDeviceInfo_T) +
1405     sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T) +
1406     sizeof(DAC960_V2_Event_T) +
1407     sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
1408
1409   if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize)) {
1410         pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
1411                                         CommandMailbox, CommandMailboxDMA);
1412         return false;
1413   }
1414
1415   CommandMailboxesMemory = slice_dma_loaf(DmaPages,
1416                 CommandMailboxesSize, &CommandMailboxesMemoryDMA);
1417
1418   /* These are the base addresses for the command memory mailbox array */
1419   Controller->V2.FirstCommandMailbox = CommandMailboxesMemory;
1420   Controller->V2.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
1421
1422   CommandMailboxesMemory += DAC960_V2_CommandMailboxCount - 1;
1423   Controller->V2.LastCommandMailbox = CommandMailboxesMemory;
1424   Controller->V2.NextCommandMailbox = Controller->V2.FirstCommandMailbox;
1425   Controller->V2.PreviousCommandMailbox1 = Controller->V2.LastCommandMailbox;
1426   Controller->V2.PreviousCommandMailbox2 =
1427                                         Controller->V2.LastCommandMailbox - 1;
1428
1429   /* These are the base addresses for the status memory mailbox array */
1430   StatusMailboxesMemory = slice_dma_loaf(DmaPages,
1431                 StatusMailboxesSize, &StatusMailboxesMemoryDMA);
1432
1433   Controller->V2.FirstStatusMailbox = StatusMailboxesMemory;
1434   Controller->V2.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
1435   StatusMailboxesMemory += DAC960_V2_StatusMailboxCount - 1;
1436   Controller->V2.LastStatusMailbox = StatusMailboxesMemory;
1437   Controller->V2.NextStatusMailbox = Controller->V2.FirstStatusMailbox;
1438
1439   Controller->V2.HealthStatusBuffer = slice_dma_loaf(DmaPages,
1440                 sizeof(DAC960_V2_HealthStatusBuffer_T),
1441                 &Controller->V2.HealthStatusBufferDMA);
1442
1443   Controller->V2.NewControllerInformation = slice_dma_loaf(DmaPages,
1444                 sizeof(DAC960_V2_ControllerInfo_T),
1445                 &Controller->V2.NewControllerInformationDMA);
1446
1447   Controller->V2.NewLogicalDeviceInformation =  slice_dma_loaf(DmaPages,
1448                 sizeof(DAC960_V2_LogicalDeviceInfo_T),
1449                 &Controller->V2.NewLogicalDeviceInformationDMA);
1450
1451   Controller->V2.NewPhysicalDeviceInformation = slice_dma_loaf(DmaPages,
1452                 sizeof(DAC960_V2_PhysicalDeviceInfo_T),
1453                 &Controller->V2.NewPhysicalDeviceInformationDMA);
1454
1455   Controller->V2.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
1456                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1457                 &Controller->V2.NewInquiryUnitSerialNumberDMA);
1458
1459   Controller->V2.Event = slice_dma_loaf(DmaPages,
1460                 sizeof(DAC960_V2_Event_T),
1461                 &Controller->V2.EventDMA);
1462
1463   Controller->V2.PhysicalToLogicalDevice = slice_dma_loaf(DmaPages,
1464                 sizeof(DAC960_V2_PhysicalToLogicalDevice_T),
1465                 &Controller->V2.PhysicalToLogicalDeviceDMA);
1466
1467   /*
1468     Enable the Memory Mailbox Interface.
1469
1470     I don't know why we can't just use one of the memory mailboxes
1471     we just allocated to do this, instead of using this temporary one.
1472     Try this change later.
1473   */
1474   memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
1475   CommandMailbox->SetMemoryMailbox.CommandIdentifier = 1;
1476   CommandMailbox->SetMemoryMailbox.CommandOpcode = DAC960_V2_IOCTL;
1477   CommandMailbox->SetMemoryMailbox.CommandControlBits.NoAutoRequestSense = true;
1478   CommandMailbox->SetMemoryMailbox.FirstCommandMailboxSizeKB =
1479     (DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T)) >> 10;
1480   CommandMailbox->SetMemoryMailbox.FirstStatusMailboxSizeKB =
1481     (DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T)) >> 10;
1482   CommandMailbox->SetMemoryMailbox.SecondCommandMailboxSizeKB = 0;
1483   CommandMailbox->SetMemoryMailbox.SecondStatusMailboxSizeKB = 0;
1484   CommandMailbox->SetMemoryMailbox.RequestSenseSize = 0;
1485   CommandMailbox->SetMemoryMailbox.IOCTL_Opcode = DAC960_V2_SetMemoryMailbox;
1486   CommandMailbox->SetMemoryMailbox.HealthStatusBufferSizeKB = 1;
1487   CommandMailbox->SetMemoryMailbox.HealthStatusBufferBusAddress =
1488                                         Controller->V2.HealthStatusBufferDMA;
1489   CommandMailbox->SetMemoryMailbox.FirstCommandMailboxBusAddress =
1490                                         Controller->V2.FirstCommandMailboxDMA;
1491   CommandMailbox->SetMemoryMailbox.FirstStatusMailboxBusAddress =
1492                                         Controller->V2.FirstStatusMailboxDMA;
1493   switch (Controller->HardwareType)
1494     {
1495     case DAC960_GEM_Controller:
1496       while (DAC960_GEM_HardwareMailboxFullP(ControllerBaseAddress))
1497         udelay(1);
1498       DAC960_GEM_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1499       DAC960_GEM_HardwareMailboxNewCommand(ControllerBaseAddress);
1500       while (!DAC960_GEM_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1501         udelay(1);
1502       CommandStatus = DAC960_GEM_ReadCommandStatus(ControllerBaseAddress);
1503       DAC960_GEM_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1504       DAC960_GEM_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1505       break;
1506     case DAC960_BA_Controller:
1507       while (DAC960_BA_HardwareMailboxFullP(ControllerBaseAddress))
1508         udelay(1);
1509       DAC960_BA_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1510       DAC960_BA_HardwareMailboxNewCommand(ControllerBaseAddress);
1511       while (!DAC960_BA_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1512         udelay(1);
1513       CommandStatus = DAC960_BA_ReadCommandStatus(ControllerBaseAddress);
1514       DAC960_BA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1515       DAC960_BA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1516       break;
1517     case DAC960_LP_Controller:
1518       while (DAC960_LP_HardwareMailboxFullP(ControllerBaseAddress))
1519         udelay(1);
1520       DAC960_LP_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1521       DAC960_LP_HardwareMailboxNewCommand(ControllerBaseAddress);
1522       while (!DAC960_LP_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1523         udelay(1);
1524       CommandStatus = DAC960_LP_ReadCommandStatus(ControllerBaseAddress);
1525       DAC960_LP_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1526       DAC960_LP_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1527       break;
1528     default:
1529       DAC960_Failure(Controller, "Unknown Controller Type\n");
1530       CommandStatus = DAC960_V2_AbormalCompletion;
1531       break;
1532     }
1533   pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
1534                                         CommandMailbox, CommandMailboxDMA);
1535   return (CommandStatus == DAC960_V2_NormalCompletion);
1536 }
1537
1538
1539 /*
1540   DAC960_V1_ReadControllerConfiguration reads the Configuration Information
1541   from DAC960 V1 Firmware Controllers and initializes the Controller structure.
1542 */
1543
1544 static bool DAC960_V1_ReadControllerConfiguration(DAC960_Controller_T
1545                                                      *Controller)
1546 {
1547   DAC960_V1_Enquiry2_T *Enquiry2;
1548   dma_addr_t Enquiry2DMA;
1549   DAC960_V1_Config2_T *Config2;
1550   dma_addr_t Config2DMA;
1551   int LogicalDriveNumber, Channel, TargetID;
1552   struct dma_loaf local_dma;
1553
1554   if (!init_dma_loaf(Controller->PCIDevice, &local_dma,
1555                 sizeof(DAC960_V1_Enquiry2_T) + sizeof(DAC960_V1_Config2_T)))
1556         return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
1557
1558   Enquiry2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Enquiry2_T), &Enquiry2DMA);
1559   Config2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Config2_T), &Config2DMA);
1560
1561   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry,
1562                               Controller->V1.NewEnquiryDMA)) {
1563     free_dma_loaf(Controller->PCIDevice, &local_dma);
1564     return DAC960_Failure(Controller, "ENQUIRY");
1565   }
1566   memcpy(&Controller->V1.Enquiry, Controller->V1.NewEnquiry,
1567                                                 sizeof(DAC960_V1_Enquiry_T));
1568
1569   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry2, Enquiry2DMA)) {
1570     free_dma_loaf(Controller->PCIDevice, &local_dma);
1571     return DAC960_Failure(Controller, "ENQUIRY2");
1572   }
1573
1574   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_ReadConfig2, Config2DMA)) {
1575     free_dma_loaf(Controller->PCIDevice, &local_dma);
1576     return DAC960_Failure(Controller, "READ CONFIG2");
1577   }
1578
1579   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_GetLogicalDriveInformation,
1580                               Controller->V1.NewLogicalDriveInformationDMA)) {
1581     free_dma_loaf(Controller->PCIDevice, &local_dma);
1582     return DAC960_Failure(Controller, "GET LOGICAL DRIVE INFORMATION");
1583   }
1584   memcpy(&Controller->V1.LogicalDriveInformation,
1585                 Controller->V1.NewLogicalDriveInformation,
1586                 sizeof(DAC960_V1_LogicalDriveInformationArray_T));
1587
1588   for (Channel = 0; Channel < Enquiry2->ActualChannels; Channel++)
1589     for (TargetID = 0; TargetID < Enquiry2->MaxTargets; TargetID++) {
1590       if (!DAC960_V1_ExecuteType3D(Controller, DAC960_V1_GetDeviceState,
1591                                    Channel, TargetID,
1592                                    Controller->V1.NewDeviceStateDMA)) {
1593                 free_dma_loaf(Controller->PCIDevice, &local_dma);
1594                 return DAC960_Failure(Controller, "GET DEVICE STATE");
1595         }
1596         memcpy(&Controller->V1.DeviceState[Channel][TargetID],
1597                 Controller->V1.NewDeviceState, sizeof(DAC960_V1_DeviceState_T));
1598      }
1599   /*
1600     Initialize the Controller Model Name and Full Model Name fields.
1601   */
1602   switch (Enquiry2->HardwareID.SubModel)
1603     {
1604     case DAC960_V1_P_PD_PU:
1605       if (Enquiry2->SCSICapability.BusSpeed == DAC960_V1_Ultra)
1606         strcpy(Controller->ModelName, "DAC960PU");
1607       else strcpy(Controller->ModelName, "DAC960PD");
1608       break;
1609     case DAC960_V1_PL:
1610       strcpy(Controller->ModelName, "DAC960PL");
1611       break;
1612     case DAC960_V1_PG:
1613       strcpy(Controller->ModelName, "DAC960PG");
1614       break;
1615     case DAC960_V1_PJ:
1616       strcpy(Controller->ModelName, "DAC960PJ");
1617       break;
1618     case DAC960_V1_PR:
1619       strcpy(Controller->ModelName, "DAC960PR");
1620       break;
1621     case DAC960_V1_PT:
1622       strcpy(Controller->ModelName, "DAC960PT");
1623       break;
1624     case DAC960_V1_PTL0:
1625       strcpy(Controller->ModelName, "DAC960PTL0");
1626       break;
1627     case DAC960_V1_PRL:
1628       strcpy(Controller->ModelName, "DAC960PRL");
1629       break;
1630     case DAC960_V1_PTL1:
1631       strcpy(Controller->ModelName, "DAC960PTL1");
1632       break;
1633     case DAC960_V1_1164P:
1634       strcpy(Controller->ModelName, "DAC1164P");
1635       break;
1636     default:
1637       free_dma_loaf(Controller->PCIDevice, &local_dma);
1638       return DAC960_Failure(Controller, "MODEL VERIFICATION");
1639     }
1640   strcpy(Controller->FullModelName, "Mylex ");
1641   strcat(Controller->FullModelName, Controller->ModelName);
1642   /*
1643     Initialize the Controller Firmware Version field and verify that it
1644     is a supported firmware version.  The supported firmware versions are:
1645
1646     DAC1164P                5.06 and above
1647     DAC960PTL/PRL/PJ/PG     4.06 and above
1648     DAC960PU/PD/PL          3.51 and above
1649     DAC960PU/PD/PL/P        2.73 and above
1650   */
1651 #if defined(CONFIG_ALPHA)
1652   /*
1653     DEC Alpha machines were often equipped with DAC960 cards that were
1654     OEMed from Mylex, and had their own custom firmware. Version 2.70,
1655     the last custom FW revision to be released by DEC for these older
1656     controllers, appears to work quite well with this driver.
1657
1658     Cards tested successfully were several versions each of the PD and
1659     PU, called by DEC the KZPSC and KZPAC, respectively, and having
1660     the Manufacturer Numbers (from Mylex), usually on a sticker on the
1661     back of the board, of:
1662
1663     KZPSC:  D040347 (1-channel) or D040348 (2-channel) or D040349 (3-channel)
1664     KZPAC:  D040395 (1-channel) or D040396 (2-channel) or D040397 (3-channel)
1665   */
1666 # define FIRMWARE_27X   "2.70"
1667 #else
1668 # define FIRMWARE_27X   "2.73"
1669 #endif
1670
1671   if (Enquiry2->FirmwareID.MajorVersion == 0)
1672     {
1673       Enquiry2->FirmwareID.MajorVersion =
1674         Controller->V1.Enquiry.MajorFirmwareVersion;
1675       Enquiry2->FirmwareID.MinorVersion =
1676         Controller->V1.Enquiry.MinorFirmwareVersion;
1677       Enquiry2->FirmwareID.FirmwareType = '0';
1678       Enquiry2->FirmwareID.TurnID = 0;
1679     }
1680   sprintf(Controller->FirmwareVersion, "%d.%02d-%c-%02d",
1681           Enquiry2->FirmwareID.MajorVersion, Enquiry2->FirmwareID.MinorVersion,
1682           Enquiry2->FirmwareID.FirmwareType, Enquiry2->FirmwareID.TurnID);
1683   if (!((Controller->FirmwareVersion[0] == '5' &&
1684          strcmp(Controller->FirmwareVersion, "5.06") >= 0) ||
1685         (Controller->FirmwareVersion[0] == '4' &&
1686          strcmp(Controller->FirmwareVersion, "4.06") >= 0) ||
1687         (Controller->FirmwareVersion[0] == '3' &&
1688          strcmp(Controller->FirmwareVersion, "3.51") >= 0) ||
1689         (Controller->FirmwareVersion[0] == '2' &&
1690          strcmp(Controller->FirmwareVersion, FIRMWARE_27X) >= 0)))
1691     {
1692       DAC960_Failure(Controller, "FIRMWARE VERSION VERIFICATION");
1693       DAC960_Error("Firmware Version = '%s'\n", Controller,
1694                    Controller->FirmwareVersion);
1695       free_dma_loaf(Controller->PCIDevice, &local_dma);
1696       return false;
1697     }
1698   /*
1699     Initialize the Controller Channels, Targets, Memory Size, and SAF-TE
1700     Enclosure Management Enabled fields.
1701   */
1702   Controller->Channels = Enquiry2->ActualChannels;
1703   Controller->Targets = Enquiry2->MaxTargets;
1704   Controller->MemorySize = Enquiry2->MemorySize >> 20;
1705   Controller->V1.SAFTE_EnclosureManagementEnabled =
1706     (Enquiry2->FaultManagementType == DAC960_V1_SAFTE);
1707   /*
1708     Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
1709     Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
1710     Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
1711     less than the Controller Queue Depth to allow for an automatic drive
1712     rebuild operation.
1713   */
1714   Controller->ControllerQueueDepth = Controller->V1.Enquiry.MaxCommands;
1715   Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
1716   if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
1717     Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
1718   Controller->LogicalDriveCount =
1719     Controller->V1.Enquiry.NumberOfLogicalDrives;
1720   Controller->MaxBlocksPerCommand = Enquiry2->MaxBlocksPerCommand;
1721   Controller->ControllerScatterGatherLimit = Enquiry2->MaxScatterGatherEntries;
1722   Controller->DriverScatterGatherLimit =
1723     Controller->ControllerScatterGatherLimit;
1724   if (Controller->DriverScatterGatherLimit > DAC960_V1_ScatterGatherLimit)
1725     Controller->DriverScatterGatherLimit = DAC960_V1_ScatterGatherLimit;
1726   /*
1727     Initialize the Stripe Size, Segment Size, and Geometry Translation.
1728   */
1729   Controller->V1.StripeSize = Config2->BlocksPerStripe * Config2->BlockFactor
1730                               >> (10 - DAC960_BlockSizeBits);
1731   Controller->V1.SegmentSize = Config2->BlocksPerCacheLine * Config2->BlockFactor
1732                                >> (10 - DAC960_BlockSizeBits);
1733   switch (Config2->DriveGeometry)
1734     {
1735     case DAC960_V1_Geometry_128_32:
1736       Controller->V1.GeometryTranslationHeads = 128;
1737       Controller->V1.GeometryTranslationSectors = 32;
1738       break;
1739     case DAC960_V1_Geometry_255_63:
1740       Controller->V1.GeometryTranslationHeads = 255;
1741       Controller->V1.GeometryTranslationSectors = 63;
1742       break;
1743     default:
1744       free_dma_loaf(Controller->PCIDevice, &local_dma);
1745       return DAC960_Failure(Controller, "CONFIG2 DRIVE GEOMETRY");
1746     }
1747   /*
1748     Initialize the Background Initialization Status.
1749   */
1750   if ((Controller->FirmwareVersion[0] == '4' &&
1751       strcmp(Controller->FirmwareVersion, "4.08") >= 0) ||
1752       (Controller->FirmwareVersion[0] == '5' &&
1753        strcmp(Controller->FirmwareVersion, "5.08") >= 0))
1754     {
1755       Controller->V1.BackgroundInitializationStatusSupported = true;
1756       DAC960_V1_ExecuteType3B(Controller,
1757                               DAC960_V1_BackgroundInitializationControl, 0x20,
1758                               Controller->
1759                                V1.BackgroundInitializationStatusDMA);
1760       memcpy(&Controller->V1.LastBackgroundInitializationStatus,
1761                 Controller->V1.BackgroundInitializationStatus,
1762                 sizeof(DAC960_V1_BackgroundInitializationStatus_T));
1763     }
1764   /*
1765     Initialize the Logical Drive Initially Accessible flag.
1766   */
1767   for (LogicalDriveNumber = 0;
1768        LogicalDriveNumber < Controller->LogicalDriveCount;
1769        LogicalDriveNumber++)
1770     if (Controller->V1.LogicalDriveInformation
1771                        [LogicalDriveNumber].LogicalDriveState !=
1772         DAC960_V1_LogicalDrive_Offline)
1773       Controller->LogicalDriveInitiallyAccessible[LogicalDriveNumber] = true;
1774   Controller->V1.LastRebuildStatus = DAC960_V1_NoRebuildOrCheckInProgress;
1775   free_dma_loaf(Controller->PCIDevice, &local_dma);
1776   return true;
1777 }
1778
1779
1780 /*
1781   DAC960_V2_ReadControllerConfiguration reads the Configuration Information
1782   from DAC960 V2 Firmware Controllers and initializes the Controller structure.
1783 */
1784
1785 static bool DAC960_V2_ReadControllerConfiguration(DAC960_Controller_T
1786                                                      *Controller)
1787 {
1788   DAC960_V2_ControllerInfo_T *ControllerInfo =
1789                 &Controller->V2.ControllerInformation;
1790   unsigned short LogicalDeviceNumber = 0;
1791   int ModelNameLength;
1792
1793   /* Get data into dma-able area, then copy into permanent location */
1794   if (!DAC960_V2_NewControllerInfo(Controller))
1795     return DAC960_Failure(Controller, "GET CONTROLLER INFO");
1796   memcpy(ControllerInfo, Controller->V2.NewControllerInformation,
1797                         sizeof(DAC960_V2_ControllerInfo_T));
1798
1799
1800   if (!DAC960_V2_GeneralInfo(Controller))
1801     return DAC960_Failure(Controller, "GET HEALTH STATUS");
1802
1803   /*
1804     Initialize the Controller Model Name and Full Model Name fields.
1805   */
1806   ModelNameLength = sizeof(ControllerInfo->ControllerName);
1807   if (ModelNameLength > sizeof(Controller->ModelName)-1)
1808     ModelNameLength = sizeof(Controller->ModelName)-1;
1809   memcpy(Controller->ModelName, ControllerInfo->ControllerName,
1810          ModelNameLength);
1811   ModelNameLength--;
1812   while (Controller->ModelName[ModelNameLength] == ' ' ||
1813          Controller->ModelName[ModelNameLength] == '\0')
1814     ModelNameLength--;
1815   Controller->ModelName[++ModelNameLength] = '\0';
1816   strcpy(Controller->FullModelName, "Mylex ");
1817   strcat(Controller->FullModelName, Controller->ModelName);
1818   /*
1819     Initialize the Controller Firmware Version field.
1820   */
1821   sprintf(Controller->FirmwareVersion, "%d.%02d-%02d",
1822           ControllerInfo->FirmwareMajorVersion,
1823           ControllerInfo->FirmwareMinorVersion,
1824           ControllerInfo->FirmwareTurnNumber);
1825   if (ControllerInfo->FirmwareMajorVersion == 6 &&
1826       ControllerInfo->FirmwareMinorVersion == 0 &&
1827       ControllerInfo->FirmwareTurnNumber < 1)
1828     {
1829       DAC960_Info("FIRMWARE VERSION %s DOES NOT PROVIDE THE CONTROLLER\n",
1830                   Controller, Controller->FirmwareVersion);
1831       DAC960_Info("STATUS MONITORING FUNCTIONALITY NEEDED BY THIS DRIVER.\n",
1832                   Controller);
1833       DAC960_Info("PLEASE UPGRADE TO VERSION 6.00-01 OR ABOVE.\n",
1834                   Controller);
1835     }
1836   /*
1837     Initialize the Controller Channels, Targets, and Memory Size.
1838   */
1839   Controller->Channels = ControllerInfo->NumberOfPhysicalChannelsPresent;
1840   Controller->Targets =
1841     ControllerInfo->MaximumTargetsPerChannel
1842                     [ControllerInfo->NumberOfPhysicalChannelsPresent-1];
1843   Controller->MemorySize = ControllerInfo->MemorySizeMB;
1844   /*
1845     Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
1846     Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
1847     Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
1848     less than the Controller Queue Depth to allow for an automatic drive
1849     rebuild operation.
1850   */
1851   Controller->ControllerQueueDepth = ControllerInfo->MaximumParallelCommands;
1852   Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
1853   if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
1854     Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
1855   Controller->LogicalDriveCount = ControllerInfo->LogicalDevicesPresent;
1856   Controller->MaxBlocksPerCommand =
1857     ControllerInfo->MaximumDataTransferSizeInBlocks;
1858   Controller->ControllerScatterGatherLimit =
1859     ControllerInfo->MaximumScatterGatherEntries;
1860   Controller->DriverScatterGatherLimit =
1861     Controller->ControllerScatterGatherLimit;
1862   if (Controller->DriverScatterGatherLimit > DAC960_V2_ScatterGatherLimit)
1863     Controller->DriverScatterGatherLimit = DAC960_V2_ScatterGatherLimit;
1864   /*
1865     Initialize the Logical Device Information.
1866   */
1867   while (true)
1868     {
1869       DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
1870         Controller->V2.NewLogicalDeviceInformation;
1871       DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo;
1872       DAC960_V2_PhysicalDevice_T PhysicalDevice;
1873
1874       if (!DAC960_V2_NewLogicalDeviceInfo(Controller, LogicalDeviceNumber))
1875         break;
1876       LogicalDeviceNumber = NewLogicalDeviceInfo->LogicalDeviceNumber;
1877       if (LogicalDeviceNumber >= DAC960_MaxLogicalDrives) {
1878         DAC960_Error("DAC960: Logical Drive Number %d not supported\n",
1879                        Controller, LogicalDeviceNumber);
1880                 break;
1881       }
1882       if (NewLogicalDeviceInfo->DeviceBlockSizeInBytes != DAC960_BlockSize) {
1883         DAC960_Error("DAC960: Logical Drive Block Size %d not supported\n",
1884               Controller, NewLogicalDeviceInfo->DeviceBlockSizeInBytes);
1885         LogicalDeviceNumber++;
1886         continue;
1887       }
1888       PhysicalDevice.Controller = 0;
1889       PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
1890       PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
1891       PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
1892       Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
1893         PhysicalDevice;
1894       if (NewLogicalDeviceInfo->LogicalDeviceState !=
1895           DAC960_V2_LogicalDevice_Offline)
1896         Controller->LogicalDriveInitiallyAccessible[LogicalDeviceNumber] = true;
1897       LogicalDeviceInfo = kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T),
1898                                    GFP_ATOMIC);
1899       if (LogicalDeviceInfo == NULL)
1900         return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
1901       Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
1902         LogicalDeviceInfo;
1903       memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
1904              sizeof(DAC960_V2_LogicalDeviceInfo_T));
1905       LogicalDeviceNumber++;
1906     }
1907   return true;
1908 }
1909
1910
1911 /*
1912   DAC960_ReportControllerConfiguration reports the Configuration Information
1913   for Controller.
1914 */
1915
1916 static bool DAC960_ReportControllerConfiguration(DAC960_Controller_T
1917                                                     *Controller)
1918 {
1919   DAC960_Info("Configuring Mylex %s PCI RAID Controller\n",
1920               Controller, Controller->ModelName);
1921   DAC960_Info("  Firmware Version: %s, Channels: %d, Memory Size: %dMB\n",
1922               Controller, Controller->FirmwareVersion,
1923               Controller->Channels, Controller->MemorySize);
1924   DAC960_Info("  PCI Bus: %d, Device: %d, Function: %d, I/O Address: ",
1925               Controller, Controller->Bus,
1926               Controller->Device, Controller->Function);
1927   if (Controller->IO_Address == 0)
1928     DAC960_Info("Unassigned\n", Controller);
1929   else DAC960_Info("0x%X\n", Controller, Controller->IO_Address);
1930   DAC960_Info("  PCI Address: 0x%X mapped at 0x%lX, IRQ Channel: %d\n",
1931               Controller, Controller->PCI_Address,
1932               (unsigned long) Controller->BaseAddress,
1933               Controller->IRQ_Channel);
1934   DAC960_Info("  Controller Queue Depth: %d, "
1935               "Maximum Blocks per Command: %d\n",
1936               Controller, Controller->ControllerQueueDepth,
1937               Controller->MaxBlocksPerCommand);
1938   DAC960_Info("  Driver Queue Depth: %d, "
1939               "Scatter/Gather Limit: %d of %d Segments\n",
1940               Controller, Controller->DriverQueueDepth,
1941               Controller->DriverScatterGatherLimit,
1942               Controller->ControllerScatterGatherLimit);
1943   if (Controller->FirmwareType == DAC960_V1_Controller)
1944     {
1945       DAC960_Info("  Stripe Size: %dKB, Segment Size: %dKB, "
1946                   "BIOS Geometry: %d/%d\n", Controller,
1947                   Controller->V1.StripeSize,
1948                   Controller->V1.SegmentSize,
1949                   Controller->V1.GeometryTranslationHeads,
1950                   Controller->V1.GeometryTranslationSectors);
1951       if (Controller->V1.SAFTE_EnclosureManagementEnabled)
1952         DAC960_Info("  SAF-TE Enclosure Management Enabled\n", Controller);
1953     }
1954   return true;
1955 }
1956
1957
1958 /*
1959   DAC960_V1_ReadDeviceConfiguration reads the Device Configuration Information
1960   for DAC960 V1 Firmware Controllers by requesting the SCSI Inquiry and SCSI
1961   Inquiry Unit Serial Number information for each device connected to
1962   Controller.
1963 */
1964
1965 static bool DAC960_V1_ReadDeviceConfiguration(DAC960_Controller_T
1966                                                  *Controller)
1967 {
1968   struct dma_loaf local_dma;
1969
1970   dma_addr_t DCDBs_dma[DAC960_V1_MaxChannels];
1971   DAC960_V1_DCDB_T *DCDBs_cpu[DAC960_V1_MaxChannels];
1972
1973   dma_addr_t SCSI_Inquiry_dma[DAC960_V1_MaxChannels];
1974   DAC960_SCSI_Inquiry_T *SCSI_Inquiry_cpu[DAC960_V1_MaxChannels];
1975
1976   dma_addr_t SCSI_NewInquiryUnitSerialNumberDMA[DAC960_V1_MaxChannels];
1977   DAC960_SCSI_Inquiry_UnitSerialNumber_T *SCSI_NewInquiryUnitSerialNumberCPU[DAC960_V1_MaxChannels];
1978
1979   struct completion Completions[DAC960_V1_MaxChannels];
1980   unsigned long flags;
1981   int Channel, TargetID;
1982
1983   if (!init_dma_loaf(Controller->PCIDevice, &local_dma,
1984                 DAC960_V1_MaxChannels*(sizeof(DAC960_V1_DCDB_T) +
1985                         sizeof(DAC960_SCSI_Inquiry_T) +
1986                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T))))
1987      return DAC960_Failure(Controller,
1988                         "DMA ALLOCATION FAILED IN ReadDeviceConfiguration");
1989
1990   for (Channel = 0; Channel < Controller->Channels; Channel++) {
1991         DCDBs_cpu[Channel] = slice_dma_loaf(&local_dma,
1992                         sizeof(DAC960_V1_DCDB_T), DCDBs_dma + Channel);
1993         SCSI_Inquiry_cpu[Channel] = slice_dma_loaf(&local_dma,
1994                         sizeof(DAC960_SCSI_Inquiry_T),
1995                         SCSI_Inquiry_dma + Channel);
1996         SCSI_NewInquiryUnitSerialNumberCPU[Channel] = slice_dma_loaf(&local_dma,
1997                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1998                         SCSI_NewInquiryUnitSerialNumberDMA + Channel);
1999   }
2000
2001   for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
2002     {
2003       /*
2004        * For each channel, submit a probe for a device on that channel.
2005        * The timeout interval for a device that is present is 10 seconds.
2006        * With this approach, the timeout periods can elapse in parallel
2007        * on each channel.
2008        */
2009       for (Channel = 0; Channel < Controller->Channels; Channel++)
2010         {
2011           dma_addr_t NewInquiryStandardDataDMA = SCSI_Inquiry_dma[Channel];
2012           DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
2013           dma_addr_t DCDB_dma = DCDBs_dma[Channel];
2014           DAC960_Command_T *Command = Controller->Commands[Channel];
2015           struct completion *Completion = &Completions[Channel];
2016
2017           init_completion(Completion);
2018           DAC960_V1_ClearCommand(Command);
2019           Command->CommandType = DAC960_ImmediateCommand;
2020           Command->Completion = Completion;
2021           Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
2022           Command->V1.CommandMailbox.Type3.BusAddress = DCDB_dma;
2023           DCDB->Channel = Channel;
2024           DCDB->TargetID = TargetID;
2025           DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
2026           DCDB->EarlyStatus = false;
2027           DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
2028           DCDB->NoAutomaticRequestSense = false;
2029           DCDB->DisconnectPermitted = true;
2030           DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
2031           DCDB->BusAddress = NewInquiryStandardDataDMA;
2032           DCDB->CDBLength = 6;
2033           DCDB->TransferLengthHigh4 = 0;
2034           DCDB->SenseLength = sizeof(DCDB->SenseData);
2035           DCDB->CDB[0] = 0x12; /* INQUIRY */
2036           DCDB->CDB[1] = 0; /* EVPD = 0 */
2037           DCDB->CDB[2] = 0; /* Page Code */
2038           DCDB->CDB[3] = 0; /* Reserved */
2039           DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
2040           DCDB->CDB[5] = 0; /* Control */
2041
2042           spin_lock_irqsave(&Controller->queue_lock, flags);
2043           DAC960_QueueCommand(Command);
2044           spin_unlock_irqrestore(&Controller->queue_lock, flags);
2045         }
2046       /*
2047        * Wait for the problems submitted in the previous loop
2048        * to complete.  On the probes that are successful,
2049        * get the serial number of the device that was found.
2050        */
2051       for (Channel = 0; Channel < Controller->Channels; Channel++)
2052         {
2053           DAC960_SCSI_Inquiry_T *InquiryStandardData =
2054             &Controller->V1.InquiryStandardData[Channel][TargetID];
2055           DAC960_SCSI_Inquiry_T *NewInquiryStandardData = SCSI_Inquiry_cpu[Channel];
2056           dma_addr_t NewInquiryUnitSerialNumberDMA =
2057                         SCSI_NewInquiryUnitSerialNumberDMA[Channel];
2058           DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
2059                         SCSI_NewInquiryUnitSerialNumberCPU[Channel];
2060           DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2061             &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
2062           DAC960_Command_T *Command = Controller->Commands[Channel];
2063           DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
2064           struct completion *Completion = &Completions[Channel];
2065
2066           wait_for_completion(Completion);
2067
2068           if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
2069             memset(InquiryStandardData, 0, sizeof(DAC960_SCSI_Inquiry_T));
2070             InquiryStandardData->PeripheralDeviceType = 0x1F;
2071             continue;
2072           } else
2073             memcpy(InquiryStandardData, NewInquiryStandardData, sizeof(DAC960_SCSI_Inquiry_T));
2074
2075           /* Preserve Channel and TargetID values from the previous loop */
2076           Command->Completion = Completion;
2077           DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
2078           DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
2079           DCDB->SenseLength = sizeof(DCDB->SenseData);
2080           DCDB->CDB[0] = 0x12; /* INQUIRY */
2081           DCDB->CDB[1] = 1; /* EVPD = 1 */
2082           DCDB->CDB[2] = 0x80; /* Page Code */
2083           DCDB->CDB[3] = 0; /* Reserved */
2084           DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
2085           DCDB->CDB[5] = 0; /* Control */
2086
2087           spin_lock_irqsave(&Controller->queue_lock, flags);
2088           DAC960_QueueCommand(Command);
2089           spin_unlock_irqrestore(&Controller->queue_lock, flags);
2090           wait_for_completion(Completion);
2091
2092           if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
2093                 memset(InquiryUnitSerialNumber, 0,
2094                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2095                 InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
2096           } else
2097                 memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
2098                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2099         }
2100     }
2101     free_dma_loaf(Controller->PCIDevice, &local_dma);
2102   return true;
2103 }
2104
2105
2106 /*
2107   DAC960_V2_ReadDeviceConfiguration reads the Device Configuration Information
2108   for DAC960 V2 Firmware Controllers by requesting the Physical Device
2109   Information and SCSI Inquiry Unit Serial Number information for each
2110   device connected to Controller.
2111 */
2112
2113 static bool DAC960_V2_ReadDeviceConfiguration(DAC960_Controller_T
2114                                                  *Controller)
2115 {
2116   unsigned char Channel = 0, TargetID = 0, LogicalUnit = 0;
2117   unsigned short PhysicalDeviceIndex = 0;
2118
2119   while (true)
2120     {
2121       DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
2122                 Controller->V2.NewPhysicalDeviceInformation;
2123       DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo;
2124       DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
2125                 Controller->V2.NewInquiryUnitSerialNumber;
2126       DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber;
2127
2128       if (!DAC960_V2_NewPhysicalDeviceInfo(Controller, Channel, TargetID, LogicalUnit))
2129           break;
2130
2131       PhysicalDeviceInfo = kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T),
2132                                     GFP_ATOMIC);
2133       if (PhysicalDeviceInfo == NULL)
2134                 return DAC960_Failure(Controller, "PHYSICAL DEVICE ALLOCATION");
2135       Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex] =
2136                 PhysicalDeviceInfo;
2137       memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
2138                 sizeof(DAC960_V2_PhysicalDeviceInfo_T));
2139
2140       InquiryUnitSerialNumber = kmalloc(
2141               sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T), GFP_ATOMIC);
2142       if (InquiryUnitSerialNumber == NULL) {
2143         kfree(PhysicalDeviceInfo);
2144         return DAC960_Failure(Controller, "SERIAL NUMBER ALLOCATION");
2145       }
2146       Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex] =
2147                 InquiryUnitSerialNumber;
2148
2149       Channel = NewPhysicalDeviceInfo->Channel;
2150       TargetID = NewPhysicalDeviceInfo->TargetID;
2151       LogicalUnit = NewPhysicalDeviceInfo->LogicalUnit;
2152
2153       /*
2154          Some devices do NOT have Unit Serial Numbers.
2155          This command fails for them.  But, we still want to
2156          remember those devices are there.  Construct a
2157          UnitSerialNumber structure for the failure case.
2158       */
2159       if (!DAC960_V2_NewInquiryUnitSerialNumber(Controller, Channel, TargetID, LogicalUnit)) {
2160         memset(InquiryUnitSerialNumber, 0,
2161              sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2162         InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
2163       } else
2164         memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
2165                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2166
2167       PhysicalDeviceIndex++;
2168       LogicalUnit++;
2169     }
2170   return true;
2171 }
2172
2173
2174 /*
2175   DAC960_SanitizeInquiryData sanitizes the Vendor, Model, Revision, and
2176   Product Serial Number fields of the Inquiry Standard Data and Inquiry
2177   Unit Serial Number structures.
2178 */
2179
2180 static void DAC960_SanitizeInquiryData(DAC960_SCSI_Inquiry_T
2181                                          *InquiryStandardData,
2182                                        DAC960_SCSI_Inquiry_UnitSerialNumber_T
2183                                          *InquiryUnitSerialNumber,
2184                                        unsigned char *Vendor,
2185                                        unsigned char *Model,
2186                                        unsigned char *Revision,
2187                                        unsigned char *SerialNumber)
2188 {
2189   int SerialNumberLength, i;
2190   if (InquiryStandardData->PeripheralDeviceType == 0x1F) return;
2191   for (i = 0; i < sizeof(InquiryStandardData->VendorIdentification); i++)
2192     {
2193       unsigned char VendorCharacter =
2194         InquiryStandardData->VendorIdentification[i];
2195       Vendor[i] = (VendorCharacter >= ' ' && VendorCharacter <= '~'
2196                    ? VendorCharacter : ' ');
2197     }
2198   Vendor[sizeof(InquiryStandardData->VendorIdentification)] = '\0';
2199   for (i = 0; i < sizeof(InquiryStandardData->ProductIdentification); i++)
2200     {
2201       unsigned char ModelCharacter =
2202         InquiryStandardData->ProductIdentification[i];
2203       Model[i] = (ModelCharacter >= ' ' && ModelCharacter <= '~'
2204                   ? ModelCharacter : ' ');
2205     }
2206   Model[sizeof(InquiryStandardData->ProductIdentification)] = '\0';
2207   for (i = 0; i < sizeof(InquiryStandardData->ProductRevisionLevel); i++)
2208     {
2209       unsigned char RevisionCharacter =
2210         InquiryStandardData->ProductRevisionLevel[i];
2211       Revision[i] = (RevisionCharacter >= ' ' && RevisionCharacter <= '~'
2212                      ? RevisionCharacter : ' ');
2213     }
2214   Revision[sizeof(InquiryStandardData->ProductRevisionLevel)] = '\0';
2215   if (InquiryUnitSerialNumber->PeripheralDeviceType == 0x1F) return;
2216   SerialNumberLength = InquiryUnitSerialNumber->PageLength;
2217   if (SerialNumberLength >
2218       sizeof(InquiryUnitSerialNumber->ProductSerialNumber))
2219     SerialNumberLength = sizeof(InquiryUnitSerialNumber->ProductSerialNumber);
2220   for (i = 0; i < SerialNumberLength; i++)
2221     {
2222       unsigned char SerialNumberCharacter =
2223         InquiryUnitSerialNumber->ProductSerialNumber[i];
2224       SerialNumber[i] =
2225         (SerialNumberCharacter >= ' ' && SerialNumberCharacter <= '~'
2226          ? SerialNumberCharacter : ' ');
2227     }
2228   SerialNumber[SerialNumberLength] = '\0';
2229 }
2230
2231
2232 /*
2233   DAC960_V1_ReportDeviceConfiguration reports the Device Configuration
2234   Information for DAC960 V1 Firmware Controllers.
2235 */
2236
2237 static bool DAC960_V1_ReportDeviceConfiguration(DAC960_Controller_T
2238                                                    *Controller)
2239 {
2240   int LogicalDriveNumber, Channel, TargetID;
2241   DAC960_Info("  Physical Devices:\n", Controller);
2242   for (Channel = 0; Channel < Controller->Channels; Channel++)
2243     for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
2244       {
2245         DAC960_SCSI_Inquiry_T *InquiryStandardData =
2246           &Controller->V1.InquiryStandardData[Channel][TargetID];
2247         DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2248           &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
2249         DAC960_V1_DeviceState_T *DeviceState =
2250           &Controller->V1.DeviceState[Channel][TargetID];
2251         DAC960_V1_ErrorTableEntry_T *ErrorEntry =
2252           &Controller->V1.ErrorTable.ErrorTableEntries[Channel][TargetID];
2253         char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
2254         char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
2255         char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
2256         char SerialNumber[1+sizeof(InquiryUnitSerialNumber
2257                                    ->ProductSerialNumber)];
2258         if (InquiryStandardData->PeripheralDeviceType == 0x1F) continue;
2259         DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
2260                                    Vendor, Model, Revision, SerialNumber);
2261         DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
2262                     Controller, Channel, TargetID, (TargetID < 10 ? " " : ""),
2263                     Vendor, Model, Revision);
2264         if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
2265           DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
2266         if (DeviceState->Present &&
2267             DeviceState->DeviceType == DAC960_V1_DiskType)
2268           {
2269             if (Controller->V1.DeviceResetCount[Channel][TargetID] > 0)
2270               DAC960_Info("         Disk Status: %s, %u blocks, %d resets\n",
2271                           Controller,
2272                           (DeviceState->DeviceState == DAC960_V1_Device_Dead
2273                            ? "Dead"
2274                            : DeviceState->DeviceState
2275                              == DAC960_V1_Device_WriteOnly
2276                              ? "Write-Only"
2277                              : DeviceState->DeviceState
2278                                == DAC960_V1_Device_Online
2279                                ? "Online" : "Standby"),
2280                           DeviceState->DiskSize,
2281                           Controller->V1.DeviceResetCount[Channel][TargetID]);
2282             else
2283               DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
2284                           (DeviceState->DeviceState == DAC960_V1_Device_Dead
2285                            ? "Dead"
2286                            : DeviceState->DeviceState
2287                              == DAC960_V1_Device_WriteOnly
2288                              ? "Write-Only"
2289                              : DeviceState->DeviceState
2290                                == DAC960_V1_Device_Online
2291                                ? "Online" : "Standby"),
2292                           DeviceState->DiskSize);
2293           }
2294         if (ErrorEntry->ParityErrorCount > 0 ||
2295             ErrorEntry->SoftErrorCount > 0 ||
2296             ErrorEntry->HardErrorCount > 0 ||
2297             ErrorEntry->MiscErrorCount > 0)
2298           DAC960_Info("         Errors - Parity: %d, Soft: %d, "
2299                       "Hard: %d, Misc: %d\n", Controller,
2300                       ErrorEntry->ParityErrorCount,
2301                       ErrorEntry->SoftErrorCount,
2302                       ErrorEntry->HardErrorCount,
2303                       ErrorEntry->MiscErrorCount);
2304       }
2305   DAC960_Info("  Logical Drives:\n", Controller);
2306   for (LogicalDriveNumber = 0;
2307        LogicalDriveNumber < Controller->LogicalDriveCount;
2308        LogicalDriveNumber++)
2309     {
2310       DAC960_V1_LogicalDriveInformation_T *LogicalDriveInformation =
2311         &Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
2312       DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks, %s\n",
2313                   Controller, Controller->ControllerNumber, LogicalDriveNumber,
2314                   LogicalDriveInformation->RAIDLevel,
2315                   (LogicalDriveInformation->LogicalDriveState
2316                    == DAC960_V1_LogicalDrive_Online
2317                    ? "Online"
2318                    : LogicalDriveInformation->LogicalDriveState
2319                      == DAC960_V1_LogicalDrive_Critical
2320                      ? "Critical" : "Offline"),
2321                   LogicalDriveInformation->LogicalDriveSize,
2322                   (LogicalDriveInformation->WriteBack
2323                    ? "Write Back" : "Write Thru"));
2324     }
2325   return true;
2326 }
2327
2328
2329 /*
2330   DAC960_V2_ReportDeviceConfiguration reports the Device Configuration
2331   Information for DAC960 V2 Firmware Controllers.
2332 */
2333
2334 static bool DAC960_V2_ReportDeviceConfiguration(DAC960_Controller_T
2335                                                    *Controller)
2336 {
2337   int PhysicalDeviceIndex, LogicalDriveNumber;
2338   DAC960_Info("  Physical Devices:\n", Controller);
2339   for (PhysicalDeviceIndex = 0;
2340        PhysicalDeviceIndex < DAC960_V2_MaxPhysicalDevices;
2341        PhysicalDeviceIndex++)
2342     {
2343       DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
2344         Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
2345       DAC960_SCSI_Inquiry_T *InquiryStandardData =
2346         (DAC960_SCSI_Inquiry_T *) &PhysicalDeviceInfo->SCSI_InquiryData;
2347       DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2348         Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
2349       char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
2350       char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
2351       char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
2352       char SerialNumber[1+sizeof(InquiryUnitSerialNumber->ProductSerialNumber)];
2353       if (PhysicalDeviceInfo == NULL) break;
2354       DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
2355                                  Vendor, Model, Revision, SerialNumber);
2356       DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
2357                   Controller,
2358                   PhysicalDeviceInfo->Channel,
2359                   PhysicalDeviceInfo->TargetID,
2360                   (PhysicalDeviceInfo->TargetID < 10 ? " " : ""),
2361                   Vendor, Model, Revision);
2362       if (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers == 0)
2363         DAC960_Info("         %sAsynchronous\n", Controller,
2364                     (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
2365                      ? "Wide " :""));
2366       else
2367         DAC960_Info("         %sSynchronous at %d MB/sec\n", Controller,
2368                     (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
2369                      ? "Wide " :""),
2370                     (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers
2371                      * PhysicalDeviceInfo->NegotiatedDataWidthBits/8));
2372       if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
2373         DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
2374       if (PhysicalDeviceInfo->PhysicalDeviceState ==
2375           DAC960_V2_Device_Unconfigured)
2376         continue;
2377       DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
2378                   (PhysicalDeviceInfo->PhysicalDeviceState
2379                    == DAC960_V2_Device_Online
2380                    ? "Online"
2381                    : PhysicalDeviceInfo->PhysicalDeviceState
2382                      == DAC960_V2_Device_Rebuild
2383                      ? "Rebuild"
2384                      : PhysicalDeviceInfo->PhysicalDeviceState
2385                        == DAC960_V2_Device_Missing
2386                        ? "Missing"
2387                        : PhysicalDeviceInfo->PhysicalDeviceState
2388                          == DAC960_V2_Device_Critical
2389                          ? "Critical"
2390                          : PhysicalDeviceInfo->PhysicalDeviceState
2391                            == DAC960_V2_Device_Dead
2392                            ? "Dead"
2393                            : PhysicalDeviceInfo->PhysicalDeviceState
2394                              == DAC960_V2_Device_SuspectedDead
2395                              ? "Suspected-Dead"
2396                              : PhysicalDeviceInfo->PhysicalDeviceState
2397                                == DAC960_V2_Device_CommandedOffline
2398                                ? "Commanded-Offline"
2399                                : PhysicalDeviceInfo->PhysicalDeviceState
2400                                  == DAC960_V2_Device_Standby
2401                                  ? "Standby" : "Unknown"),
2402                   PhysicalDeviceInfo->ConfigurableDeviceSize);
2403       if (PhysicalDeviceInfo->ParityErrors == 0 &&
2404           PhysicalDeviceInfo->SoftErrors == 0 &&
2405           PhysicalDeviceInfo->HardErrors == 0 &&
2406           PhysicalDeviceInfo->MiscellaneousErrors == 0 &&
2407           PhysicalDeviceInfo->CommandTimeouts == 0 &&
2408           PhysicalDeviceInfo->Retries == 0 &&
2409           PhysicalDeviceInfo->Aborts == 0 &&
2410           PhysicalDeviceInfo->PredictedFailuresDetected == 0)
2411         continue;
2412       DAC960_Info("         Errors - Parity: %d, Soft: %d, "
2413                   "Hard: %d, Misc: %d\n", Controller,
2414                   PhysicalDeviceInfo->ParityErrors,
2415                   PhysicalDeviceInfo->SoftErrors,
2416                   PhysicalDeviceInfo->HardErrors,
2417                   PhysicalDeviceInfo->MiscellaneousErrors);
2418       DAC960_Info("                  Timeouts: %d, Retries: %d, "
2419                   "Aborts: %d, Predicted: %d\n", Controller,
2420                   PhysicalDeviceInfo->CommandTimeouts,
2421                   PhysicalDeviceInfo->Retries,
2422                   PhysicalDeviceInfo->Aborts,
2423                   PhysicalDeviceInfo->PredictedFailuresDetected);
2424     }
2425   DAC960_Info("  Logical Drives:\n", Controller);
2426   for (LogicalDriveNumber = 0;
2427        LogicalDriveNumber < DAC960_MaxLogicalDrives;
2428        LogicalDriveNumber++)
2429     {
2430       DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
2431         Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
2432       unsigned char *ReadCacheStatus[] = { "Read Cache Disabled",
2433                                            "Read Cache Enabled",
2434                                            "Read Ahead Enabled",
2435                                            "Intelligent Read Ahead Enabled",
2436                                            "-", "-", "-", "-" };
2437       unsigned char *WriteCacheStatus[] = { "Write Cache Disabled",
2438                                             "Logical Device Read Only",
2439                                             "Write Cache Enabled",
2440                                             "Intelligent Write Cache Enabled",
2441                                             "-", "-", "-", "-" };
2442       unsigned char *GeometryTranslation;
2443       if (LogicalDeviceInfo == NULL) continue;
2444       switch (LogicalDeviceInfo->DriveGeometry)
2445         {
2446         case DAC960_V2_Geometry_128_32:
2447           GeometryTranslation = "128/32";
2448           break;
2449         case DAC960_V2_Geometry_255_63:
2450           GeometryTranslation = "255/63";
2451           break;
2452         default:
2453           GeometryTranslation = "Invalid";
2454           DAC960_Error("Illegal Logical Device Geometry %d\n",
2455                        Controller, LogicalDeviceInfo->DriveGeometry);
2456           break;
2457         }
2458       DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks\n",
2459                   Controller, Controller->ControllerNumber, LogicalDriveNumber,
2460                   LogicalDeviceInfo->RAIDLevel,
2461                   (LogicalDeviceInfo->LogicalDeviceState
2462                    == DAC960_V2_LogicalDevice_Online
2463                    ? "Online"
2464                    : LogicalDeviceInfo->LogicalDeviceState
2465                      == DAC960_V2_LogicalDevice_Critical
2466                      ? "Critical" : "Offline"),
2467                   LogicalDeviceInfo->ConfigurableDeviceSize);
2468       DAC960_Info("                  Logical Device %s, BIOS Geometry: %s\n",
2469                   Controller,
2470                   (LogicalDeviceInfo->LogicalDeviceControl
2471                                      .LogicalDeviceInitialized
2472                    ? "Initialized" : "Uninitialized"),
2473                   GeometryTranslation);
2474       if (LogicalDeviceInfo->StripeSize == 0)
2475         {
2476           if (LogicalDeviceInfo->CacheLineSize == 0)
2477             DAC960_Info("                  Stripe Size: N/A, "
2478                         "Segment Size: N/A\n", Controller);
2479           else
2480             DAC960_Info("                  Stripe Size: N/A, "
2481                         "Segment Size: %dKB\n", Controller,
2482                         1 << (LogicalDeviceInfo->CacheLineSize - 2));
2483         }
2484       else
2485         {
2486           if (LogicalDeviceInfo->CacheLineSize == 0)
2487             DAC960_Info("                  Stripe Size: %dKB, "
2488                         "Segment Size: N/A\n", Controller,
2489                         1 << (LogicalDeviceInfo->StripeSize - 2));
2490           else
2491             DAC960_Info("                  Stripe Size: %dKB, "
2492                         "Segment Size: %dKB\n", Controller,
2493                         1 << (LogicalDeviceInfo->StripeSize - 2),
2494                         1 << (LogicalDeviceInfo->CacheLineSize - 2));
2495         }
2496       DAC960_Info("                  %s, %s\n", Controller,
2497                   ReadCacheStatus[
2498                     LogicalDeviceInfo->LogicalDeviceControl.ReadCache],
2499                   WriteCacheStatus[
2500                     LogicalDeviceInfo->LogicalDeviceControl.WriteCache]);
2501       if (LogicalDeviceInfo->SoftErrors > 0 ||
2502           LogicalDeviceInfo->CommandsFailed > 0 ||
2503           LogicalDeviceInfo->DeferredWriteErrors)
2504         DAC960_Info("                  Errors - Soft: %d, Failed: %d, "
2505                     "Deferred Write: %d\n", Controller,
2506                     LogicalDeviceInfo->SoftErrors,
2507                     LogicalDeviceInfo->CommandsFailed,
2508                     LogicalDeviceInfo->DeferredWriteErrors);
2509
2510     }
2511   return true;
2512 }
2513
2514 /*
2515   DAC960_RegisterBlockDevice registers the Block Device structures
2516   associated with Controller.
2517 */
2518
2519 static bool DAC960_RegisterBlockDevice(DAC960_Controller_T *Controller)
2520 {
2521   int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
2522   int n;
2523
2524   /*
2525     Register the Block Device Major Number for this DAC960 Controller.
2526   */
2527   if (register_blkdev(MajorNumber, "dac960") < 0)
2528       return false;
2529
2530   for (n = 0; n < DAC960_MaxLogicalDrives; n++) {
2531         struct gendisk *disk = Controller->disks[n];
2532         struct request_queue *RequestQueue;
2533
2534         /* for now, let all request queues share controller's lock */
2535         RequestQueue = blk_init_queue(DAC960_RequestFunction,&Controller->queue_lock);
2536         if (!RequestQueue) {
2537                 printk("DAC960: failure to allocate request queue\n");
2538                 continue;
2539         }
2540         Controller->RequestQueue[n] = RequestQueue;
2541         blk_queue_bounce_limit(RequestQueue, Controller->BounceBufferLimit);
2542         RequestQueue->queuedata = Controller;
2543         blk_queue_max_segments(RequestQueue, Controller->DriverScatterGatherLimit);
2544         blk_queue_max_hw_sectors(RequestQueue, Controller->MaxBlocksPerCommand);
2545         disk->queue = RequestQueue;
2546         sprintf(disk->disk_name, "rd/c%dd%d", Controller->ControllerNumber, n);
2547         disk->major = MajorNumber;
2548         disk->first_minor = n << DAC960_MaxPartitionsBits;
2549         disk->fops = &DAC960_BlockDeviceOperations;
2550         disk->events = DISK_EVENT_MEDIA_CHANGE;
2551    }
2552   /*
2553     Indicate the Block Device Registration completed successfully,
2554   */
2555   return true;
2556 }
2557
2558
2559 /*
2560   DAC960_UnregisterBlockDevice unregisters the Block Device structures
2561   associated with Controller.
2562 */
2563
2564 static void DAC960_UnregisterBlockDevice(DAC960_Controller_T *Controller)
2565 {
2566   int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
2567   int disk;
2568
2569   /* does order matter when deleting gendisk and cleanup in request queue? */
2570   for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
2571         del_gendisk(Controller->disks[disk]);
2572         blk_cleanup_queue(Controller->RequestQueue[disk]);
2573         Controller->RequestQueue[disk] = NULL;
2574   }
2575
2576   /*
2577     Unregister the Block Device Major Number for this DAC960 Controller.
2578   */
2579   unregister_blkdev(MajorNumber, "dac960");
2580 }
2581
2582 /*
2583   DAC960_ComputeGenericDiskInfo computes the values for the Generic Disk
2584   Information Partition Sector Counts and Block Sizes.
2585 */
2586
2587 static void DAC960_ComputeGenericDiskInfo(DAC960_Controller_T *Controller)
2588 {
2589         int disk;
2590         for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++)
2591                 set_capacity(Controller->disks[disk], disk_size(Controller, disk));
2592 }
2593
2594 /*
2595   DAC960_ReportErrorStatus reports Controller BIOS Messages passed through
2596   the Error Status Register when the driver performs the BIOS handshaking.
2597   It returns true for fatal errors and false otherwise.
2598 */
2599
2600 static bool DAC960_ReportErrorStatus(DAC960_Controller_T *Controller,
2601                                         unsigned char ErrorStatus,
2602                                         unsigned char Parameter0,
2603                                         unsigned char Parameter1)
2604 {
2605   switch (ErrorStatus)
2606     {
2607     case 0x00:
2608       DAC960_Notice("Physical Device %d:%d Not Responding\n",
2609                     Controller, Parameter1, Parameter0);
2610       break;
2611     case 0x08:
2612       if (Controller->DriveSpinUpMessageDisplayed) break;
2613       DAC960_Notice("Spinning Up Drives\n", Controller);
2614       Controller->DriveSpinUpMessageDisplayed = true;
2615       break;
2616     case 0x30:
2617       DAC960_Notice("Configuration Checksum Error\n", Controller);
2618       break;
2619     case 0x60:
2620       DAC960_Notice("Mirror Race Recovery Failed\n", Controller);
2621       break;
2622     case 0x70:
2623       DAC960_Notice("Mirror Race Recovery In Progress\n", Controller);
2624       break;
2625     case 0x90:
2626       DAC960_Notice("Physical Device %d:%d COD Mismatch\n",
2627                     Controller, Parameter1, Parameter0);
2628       break;
2629     case 0xA0:
2630       DAC960_Notice("Logical Drive Installation Aborted\n", Controller);
2631       break;
2632     case 0xB0:
2633       DAC960_Notice("Mirror Race On A Critical Logical Drive\n", Controller);
2634       break;
2635     case 0xD0:
2636       DAC960_Notice("New Controller Configuration Found\n", Controller);
2637       break;
2638     case 0xF0:
2639       DAC960_Error("Fatal Memory Parity Error for Controller at\n", Controller);
2640       return true;
2641     default:
2642       DAC960_Error("Unknown Initialization Error %02X for Controller at\n",
2643                    Controller, ErrorStatus);
2644       return true;
2645     }
2646   return false;
2647 }
2648
2649
2650 /*
2651  * DAC960_DetectCleanup releases the resources that were allocated
2652  * during DAC960_DetectController().  DAC960_DetectController can
2653  * has several internal failure points, so not ALL resources may
2654  * have been allocated.  It's important to free only
2655  * resources that HAVE been allocated.  The code below always
2656  * tests that the resource has been allocated before attempting to
2657  * free it.
2658  */
2659 static void DAC960_DetectCleanup(DAC960_Controller_T *Controller)
2660 {
2661   int i;
2662
2663   /* Free the memory mailbox, status, and related structures */
2664   free_dma_loaf(Controller->PCIDevice, &Controller->DmaPages);
2665   if (Controller->MemoryMappedAddress) {
2666         switch(Controller->HardwareType)
2667         {
2668                 case DAC960_GEM_Controller:
2669                         DAC960_GEM_DisableInterrupts(Controller->BaseAddress);
2670                         break;
2671                 case DAC960_BA_Controller:
2672                         DAC960_BA_DisableInterrupts(Controller->BaseAddress);
2673                         break;
2674                 case DAC960_LP_Controller:
2675                         DAC960_LP_DisableInterrupts(Controller->BaseAddress);
2676                         break;
2677                 case DAC960_LA_Controller:
2678                         DAC960_LA_DisableInterrupts(Controller->BaseAddress);
2679                         break;
2680                 case DAC960_PG_Controller:
2681                         DAC960_PG_DisableInterrupts(Controller->BaseAddress);
2682                         break;
2683                 case DAC960_PD_Controller:
2684                         DAC960_PD_DisableInterrupts(Controller->BaseAddress);
2685                         break;
2686                 case DAC960_P_Controller:
2687                         DAC960_PD_DisableInterrupts(Controller->BaseAddress);
2688                         break;
2689         }
2690         iounmap(Controller->MemoryMappedAddress);
2691   }
2692   if (Controller->IRQ_Channel)
2693         free_irq(Controller->IRQ_Channel, Controller);
2694   if (Controller->IO_Address)
2695         release_region(Controller->IO_Address, 0x80);
2696   pci_disable_device(Controller->PCIDevice);
2697   for (i = 0; (i < DAC960_MaxLogicalDrives) && Controller->disks[i]; i++)
2698        put_disk(Controller->disks[i]);
2699   DAC960_Controllers[Controller->ControllerNumber] = NULL;
2700   kfree(Controller);
2701 }
2702
2703
2704 /*
2705   DAC960_DetectController detects Mylex DAC960/AcceleRAID/eXtremeRAID
2706   PCI RAID Controllers by interrogating the PCI Configuration Space for
2707   Controller Type.
2708 */
2709
2710 static DAC960_Controller_T *
2711 DAC960_DetectController(struct pci_dev *PCI_Device,
2712                         const struct pci_device_id *entry)
2713 {
2714   struct DAC960_privdata *privdata =
2715                 (struct DAC960_privdata *)entry->driver_data;
2716   irq_handler_t InterruptHandler = privdata->InterruptHandler;
2717   unsigned int MemoryWindowSize = privdata->MemoryWindowSize;
2718   DAC960_Controller_T *Controller = NULL;
2719   unsigned char DeviceFunction = PCI_Device->devfn;
2720   unsigned char ErrorStatus, Parameter0, Parameter1;
2721   unsigned int IRQ_Channel;
2722   void __iomem *BaseAddress;
2723   int i;
2724
2725   Controller = kzalloc(sizeof(DAC960_Controller_T), GFP_ATOMIC);
2726   if (Controller == NULL) {
2727         DAC960_Error("Unable to allocate Controller structure for "
2728                        "Controller at\n", NULL);
2729         return NULL;
2730   }
2731   Controller->ControllerNumber = DAC960_ControllerCount;
2732   DAC960_Controllers[DAC960_ControllerCount++] = Controller;
2733   Controller->Bus = PCI_Device->bus->number;
2734   Controller->FirmwareType = privdata->FirmwareType;
2735   Controller->HardwareType = privdata->HardwareType;
2736   Controller->Device = DeviceFunction >> 3;
2737   Controller->Function = DeviceFunction & 0x7;
2738   Controller->PCIDevice = PCI_Device;
2739   strcpy(Controller->FullModelName, "DAC960");
2740
2741   if (pci_enable_device(PCI_Device))
2742         goto Failure;
2743
2744   switch (Controller->HardwareType)
2745   {
2746         case DAC960_GEM_Controller:
2747           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2748           break;
2749         case DAC960_BA_Controller:
2750           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2751           break;
2752         case DAC960_LP_Controller:
2753           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2754           break;
2755         case DAC960_LA_Controller:
2756           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2757           break;
2758         case DAC960_PG_Controller:
2759           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2760           break;
2761         case DAC960_PD_Controller:
2762           Controller->IO_Address = pci_resource_start(PCI_Device, 0);
2763           Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
2764           break;
2765         case DAC960_P_Controller:
2766           Controller->IO_Address = pci_resource_start(PCI_Device, 0);
2767           Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
2768           break;
2769   }
2770
2771   pci_set_drvdata(PCI_Device, (void *)((long)Controller->ControllerNumber));
2772   for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
2773         Controller->disks[i] = alloc_disk(1<<DAC960_MaxPartitionsBits);
2774         if (!Controller->disks[i])
2775                 goto Failure;
2776         Controller->disks[i]->private_data = (void *)((long)i);
2777   }
2778   init_waitqueue_head(&Controller->CommandWaitQueue);
2779   init_waitqueue_head(&Controller->HealthStatusWaitQueue);
2780   spin_lock_init(&Controller->queue_lock);
2781   DAC960_AnnounceDriver(Controller);
2782   /*
2783     Map the Controller Register Window.
2784   */
2785  if (MemoryWindowSize < PAGE_SIZE)
2786         MemoryWindowSize = PAGE_SIZE;
2787   Controller->MemoryMappedAddress =
2788         ioremap_nocache(Controller->PCI_Address & PAGE_MASK, MemoryWindowSize);
2789   Controller->BaseAddress =
2790         Controller->MemoryMappedAddress + (Controller->PCI_Address & ~PAGE_MASK);
2791   if (Controller->MemoryMappedAddress == NULL)
2792   {
2793           DAC960_Error("Unable to map Controller Register Window for "
2794                        "Controller at\n", Controller);
2795           goto Failure;
2796   }
2797   BaseAddress = Controller->BaseAddress;
2798   switch (Controller->HardwareType)
2799   {
2800         case DAC960_GEM_Controller:
2801           DAC960_GEM_DisableInterrupts(BaseAddress);
2802           DAC960_GEM_AcknowledgeHardwareMailboxStatus(BaseAddress);
2803           udelay(1000);
2804           while (DAC960_GEM_InitializationInProgressP(BaseAddress))
2805             {
2806               if (DAC960_GEM_ReadErrorStatus(BaseAddress, &ErrorStatus,
2807                                             &Parameter0, &Parameter1) &&
2808                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2809                                            Parameter0, Parameter1))
2810                 goto Failure;
2811               udelay(10);
2812             }
2813           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2814             {
2815               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2816                            "for Controller at\n", Controller);
2817               goto Failure;
2818             }
2819           DAC960_GEM_EnableInterrupts(BaseAddress);
2820           Controller->QueueCommand = DAC960_GEM_QueueCommand;
2821           Controller->ReadControllerConfiguration =
2822             DAC960_V2_ReadControllerConfiguration;
2823           Controller->ReadDeviceConfiguration =
2824             DAC960_V2_ReadDeviceConfiguration;
2825           Controller->ReportDeviceConfiguration =
2826             DAC960_V2_ReportDeviceConfiguration;
2827           Controller->QueueReadWriteCommand =
2828             DAC960_V2_QueueReadWriteCommand;
2829           break;
2830         case DAC960_BA_Controller:
2831           DAC960_BA_DisableInterrupts(BaseAddress);
2832           DAC960_BA_AcknowledgeHardwareMailboxStatus(BaseAddress);
2833           udelay(1000);
2834           while (DAC960_BA_InitializationInProgressP(BaseAddress))
2835             {
2836               if (DAC960_BA_ReadErrorStatus(BaseAddress, &ErrorStatus,
2837                                             &Parameter0, &Parameter1) &&
2838                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2839                                            Parameter0, Parameter1))
2840                 goto Failure;
2841               udelay(10);
2842             }
2843           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2844             {
2845               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2846                            "for Controller at\n", Controller);
2847               goto Failure;
2848             }
2849           DAC960_BA_EnableInterrupts(BaseAddress);
2850           Controller->QueueCommand = DAC960_BA_QueueCommand;
2851           Controller->ReadControllerConfiguration =
2852             DAC960_V2_ReadControllerConfiguration;
2853           Controller->ReadDeviceConfiguration =
2854             DAC960_V2_ReadDeviceConfiguration;
2855           Controller->ReportDeviceConfiguration =
2856             DAC960_V2_ReportDeviceConfiguration;
2857           Controller->QueueReadWriteCommand =
2858             DAC960_V2_QueueReadWriteCommand;
2859           break;
2860         case DAC960_LP_Controller:
2861           DAC960_LP_DisableInterrupts(BaseAddress);
2862           DAC960_LP_AcknowledgeHardwareMailboxStatus(BaseAddress);
2863           udelay(1000);
2864           while (DAC960_LP_InitializationInProgressP(BaseAddress))
2865             {
2866               if (DAC960_LP_ReadErrorStatus(BaseAddress, &ErrorStatus,
2867                                             &Parameter0, &Parameter1) &&
2868                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2869                                            Parameter0, Parameter1))
2870                 goto Failure;
2871               udelay(10);
2872             }
2873           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2874             {
2875               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2876                            "for Controller at\n", Controller);
2877               goto Failure;
2878             }
2879           DAC960_LP_EnableInterrupts(BaseAddress);
2880           Controller->QueueCommand = DAC960_LP_QueueCommand;
2881           Controller->ReadControllerConfiguration =
2882             DAC960_V2_ReadControllerConfiguration;
2883           Controller->ReadDeviceConfiguration =
2884             DAC960_V2_ReadDeviceConfiguration;
2885           Controller->ReportDeviceConfiguration =
2886             DAC960_V2_ReportDeviceConfiguration;
2887           Controller->QueueReadWriteCommand =
2888             DAC960_V2_QueueReadWriteCommand;
2889           break;
2890         case DAC960_LA_Controller:
2891           DAC960_LA_DisableInterrupts(BaseAddress);
2892           DAC960_LA_AcknowledgeHardwareMailboxStatus(BaseAddress);
2893           udelay(1000);
2894           while (DAC960_LA_InitializationInProgressP(BaseAddress))
2895             {
2896               if (DAC960_LA_ReadErrorStatus(BaseAddress, &ErrorStatus,
2897                                             &Parameter0, &Parameter1) &&
2898                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2899                                            Parameter0, Parameter1))
2900                 goto Failure;
2901               udelay(10);
2902             }
2903           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2904             {
2905               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2906                            "for Controller at\n", Controller);
2907               goto Failure;
2908             }
2909           DAC960_LA_EnableInterrupts(BaseAddress);
2910           if (Controller->V1.DualModeMemoryMailboxInterface)
2911             Controller->QueueCommand = DAC960_LA_QueueCommandDualMode;
2912           else Controller->QueueCommand = DAC960_LA_QueueCommandSingleMode;
2913           Controller->ReadControllerConfiguration =
2914             DAC960_V1_ReadControllerConfiguration;
2915           Controller->ReadDeviceConfiguration =
2916             DAC960_V1_ReadDeviceConfiguration;
2917           Controller->ReportDeviceConfiguration =
2918             DAC960_V1_ReportDeviceConfiguration;
2919           Controller->QueueReadWriteCommand =
2920             DAC960_V1_QueueReadWriteCommand;
2921           break;
2922         case DAC960_PG_Controller:
2923           DAC960_PG_DisableInterrupts(BaseAddress);
2924           DAC960_PG_AcknowledgeHardwareMailboxStatus(BaseAddress);
2925           udelay(1000);
2926           while (DAC960_PG_InitializationInProgressP(BaseAddress))
2927             {
2928               if (DAC960_PG_ReadErrorStatus(BaseAddress, &ErrorStatus,
2929                                             &Parameter0, &Parameter1) &&
2930                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2931                                            Parameter0, Parameter1))
2932                 goto Failure;
2933               udelay(10);
2934             }
2935           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2936             {
2937               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2938                            "for Controller at\n", Controller);
2939               goto Failure;
2940             }
2941           DAC960_PG_EnableInterrupts(BaseAddress);
2942           if (Controller->V1.DualModeMemoryMailboxInterface)
2943             Controller->QueueCommand = DAC960_PG_QueueCommandDualMode;
2944           else Controller->QueueCommand = DAC960_PG_QueueCommandSingleMode;
2945           Controller->ReadControllerConfiguration =
2946             DAC960_V1_ReadControllerConfiguration;
2947           Controller->ReadDeviceConfiguration =
2948             DAC960_V1_ReadDeviceConfiguration;
2949           Controller->ReportDeviceConfiguration =
2950             DAC960_V1_ReportDeviceConfiguration;
2951           Controller->QueueReadWriteCommand =
2952             DAC960_V1_QueueReadWriteCommand;
2953           break;
2954         case DAC960_PD_Controller:
2955           if (!request_region(Controller->IO_Address, 0x80,
2956                               Controller->FullModelName)) {
2957                 DAC960_Error("IO port 0x%d busy for Controller at\n",
2958                              Controller, Controller->IO_Address);
2959                 goto Failure;
2960           }
2961           DAC960_PD_DisableInterrupts(BaseAddress);
2962           DAC960_PD_AcknowledgeStatus(BaseAddress);
2963           udelay(1000);
2964           while (DAC960_PD_InitializationInProgressP(BaseAddress))
2965             {
2966               if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
2967                                             &Parameter0, &Parameter1) &&
2968                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2969                                            Parameter0, Parameter1))
2970                 goto Failure;
2971               udelay(10);
2972             }
2973           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2974             {
2975               DAC960_Error("Unable to allocate DMA mapped memory "
2976                            "for Controller at\n", Controller);
2977               goto Failure;
2978             }
2979           DAC960_PD_EnableInterrupts(BaseAddress);
2980           Controller->QueueCommand = DAC960_PD_QueueCommand;
2981           Controller->ReadControllerConfiguration =
2982             DAC960_V1_ReadControllerConfiguration;
2983           Controller->ReadDeviceConfiguration =
2984             DAC960_V1_ReadDeviceConfiguration;
2985           Controller->ReportDeviceConfiguration =
2986             DAC960_V1_ReportDeviceConfiguration;
2987           Controller->QueueReadWriteCommand =
2988             DAC960_V1_QueueReadWriteCommand;
2989           break;
2990         case DAC960_P_Controller:
2991           if (!request_region(Controller->IO_Address, 0x80,
2992                               Controller->FullModelName)){
2993                 DAC960_Error("IO port 0x%d busy for Controller at\n",
2994                              Controller, Controller->IO_Address);
2995                 goto Failure;
2996           }
2997           DAC960_PD_DisableInterrupts(BaseAddress);
2998           DAC960_PD_AcknowledgeStatus(BaseAddress);
2999           udelay(1000);
3000           while (DAC960_PD_InitializationInProgressP(BaseAddress))
3001             {
3002               if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
3003                                             &Parameter0, &Parameter1) &&
3004                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
3005                                            Parameter0, Parameter1))
3006                 goto Failure;
3007               udelay(10);
3008             }
3009           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
3010             {
3011               DAC960_Error("Unable to allocate DMA mapped memory"
3012                            "for Controller at\n", Controller);
3013               goto Failure;
3014             }
3015           DAC960_PD_EnableInterrupts(BaseAddress);
3016           Controller->QueueCommand = DAC960_P_QueueCommand;
3017           Controller->ReadControllerConfiguration =
3018             DAC960_V1_ReadControllerConfiguration;
3019           Controller->ReadDeviceConfiguration =
3020             DAC960_V1_ReadDeviceConfiguration;
3021           Controller->ReportDeviceConfiguration =
3022             DAC960_V1_ReportDeviceConfiguration;
3023           Controller->QueueReadWriteCommand =
3024             DAC960_V1_QueueReadWriteCommand;
3025           break;
3026   }
3027   /*
3028      Acquire shared access to the IRQ Channel.
3029   */
3030   IRQ_Channel = PCI_Device->irq;
3031   if (request_irq(IRQ_Channel, InterruptHandler, IRQF_SHARED,
3032                       Controller->FullModelName, Controller) < 0)
3033   {
3034         DAC960_Error("Unable to acquire IRQ Channel %d for Controller at\n",
3035                        Controller, Controller->IRQ_Channel);
3036         goto Failure;
3037   }
3038   Controller->IRQ_Channel = IRQ_Channel;
3039   Controller->InitialCommand.CommandIdentifier = 1;
3040   Controller->InitialCommand.Controller = Controller;
3041   Controller->Commands[0] = &Controller->InitialCommand;
3042   Controller->FreeCommands = &Controller->InitialCommand;
3043   return Controller;
3044
3045 Failure:
3046   if (Controller->IO_Address == 0)
3047         DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
3048                      "PCI Address 0x%X\n", Controller,
3049                      Controller->Bus, Controller->Device,
3050                      Controller->Function, Controller->PCI_Address);
3051   else
3052         DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
3053                         "0x%X PCI Address 0x%X\n", Controller,
3054                         Controller->Bus, Controller->Device,
3055                         Controller->Function, Controller->IO_Address,
3056                         Controller->PCI_Address);
3057   DAC960_DetectCleanup(Controller);
3058   DAC960_ControllerCount--;
3059   return NULL;
3060 }
3061
3062 /*
3063   DAC960_InitializeController initializes Controller.
3064 */
3065
3066 static bool
3067 DAC960_InitializeController(DAC960_Controller_T *Controller)
3068 {
3069   if (DAC960_ReadControllerConfiguration(Controller) &&
3070       DAC960_ReportControllerConfiguration(Controller) &&
3071       DAC960_CreateAuxiliaryStructures(Controller) &&
3072       DAC960_ReadDeviceConfiguration(Controller) &&
3073       DAC960_ReportDeviceConfiguration(Controller) &&
3074       DAC960_RegisterBlockDevice(Controller))
3075     {
3076       /*
3077         Initialize the Monitoring Timer.
3078       */
3079       init_timer(&Controller->MonitoringTimer);
3080       Controller->MonitoringTimer.expires =
3081         jiffies + DAC960_MonitoringTimerInterval;
3082       Controller->MonitoringTimer.data = (unsigned long) Controller;
3083       Controller->MonitoringTimer.function = DAC960_MonitoringTimerFunction;
3084       add_timer(&Controller->MonitoringTimer);
3085       Controller->ControllerInitialized = true;
3086       return true;
3087     }
3088   return false;
3089 }
3090
3091
3092 /*
3093   DAC960_FinalizeController finalizes Controller.
3094 */
3095
3096 static void DAC960_FinalizeController(DAC960_Controller_T *Controller)
3097 {
3098   if (Controller->ControllerInitialized)
3099     {
3100       unsigned long flags;
3101
3102       /*
3103        * Acquiring and releasing lock here eliminates
3104        * a very low probability race.
3105        *
3106        * The code below allocates controller command structures
3107        * from the free list without holding the controller lock.
3108        * This is safe assuming there is no other activity on
3109        * the controller at the time.
3110        *
3111        * But, there might be a monitoring command still
3112        * in progress.  Setting the Shutdown flag while holding
3113        * the lock ensures that there is no monitoring command
3114        * in the interrupt handler currently, and any monitoring
3115        * commands that complete from this time on will NOT return
3116        * their command structure to the free list.
3117        */
3118
3119       spin_lock_irqsave(&Controller->queue_lock, flags);
3120       Controller->ShutdownMonitoringTimer = 1;
3121       spin_unlock_irqrestore(&Controller->queue_lock, flags);
3122
3123       del_timer_sync(&Controller->MonitoringTimer);
3124       if (Controller->FirmwareType == DAC960_V1_Controller)
3125         {
3126           DAC960_Notice("Flushing Cache...", Controller);
3127           DAC960_V1_ExecuteType3(Controller, DAC960_V1_Flush, 0);
3128           DAC960_Notice("done\n", Controller);
3129
3130           if (Controller->HardwareType == DAC960_PD_Controller)
3131               release_region(Controller->IO_Address, 0x80);
3132         }
3133       else
3134         {
3135           DAC960_Notice("Flushing Cache...", Controller);
3136           DAC960_V2_DeviceOperation(Controller, DAC960_V2_PauseDevice,
3137                                     DAC960_V2_RAID_Controller);
3138           DAC960_Notice("done\n", Controller);
3139         }
3140     }
3141   DAC960_UnregisterBlockDevice(Controller);
3142   DAC960_DestroyAuxiliaryStructures(Controller);
3143   DAC960_DestroyProcEntries(Controller);
3144   DAC960_DetectCleanup(Controller);
3145 }
3146
3147
3148 /*
3149   DAC960_Probe verifies controller's existence and
3150   initializes the DAC960 Driver for that controller.
3151 */
3152
3153 static int
3154 DAC960_Probe(struct pci_dev *dev, const struct pci_device_id *entry)
3155 {
3156   int disk;
3157   DAC960_Controller_T *Controller;
3158
3159   if (DAC960_ControllerCount == DAC960_MaxControllers)
3160   {
3161         DAC960_Error("More than %d DAC960 Controllers detected - "
3162                        "ignoring from Controller at\n",
3163                        NULL, DAC960_MaxControllers);
3164         return -ENODEV;
3165   }
3166
3167   Controller = DAC960_DetectController(dev, entry);
3168   if (!Controller)
3169         return -ENODEV;
3170
3171   if (!DAC960_InitializeController(Controller)) {
3172         DAC960_FinalizeController(Controller);
3173         return -ENODEV;
3174   }
3175
3176   for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
3177         set_capacity(Controller->disks[disk], disk_size(Controller, disk));
3178         add_disk(Controller->disks[disk]);
3179   }
3180   DAC960_CreateProcEntries(Controller);
3181   return 0;
3182 }
3183
3184
3185 /*
3186   DAC960_Finalize finalizes the DAC960 Driver.
3187 */
3188
3189 static void DAC960_Remove(struct pci_dev *PCI_Device)
3190 {
3191   int Controller_Number = (long)pci_get_drvdata(PCI_Device);
3192   DAC960_Controller_T *Controller = DAC960_Controllers[Controller_Number];
3193   if (Controller != NULL)
3194       DAC960_FinalizeController(Controller);
3195 }
3196
3197
3198 /*
3199   DAC960_V1_QueueReadWriteCommand prepares and queues a Read/Write Command for
3200   DAC960 V1 Firmware Controllers.
3201 */
3202
3203 static void DAC960_V1_QueueReadWriteCommand(DAC960_Command_T *Command)
3204 {
3205   DAC960_Controller_T *Controller = Command->Controller;
3206   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
3207   DAC960_V1_ScatterGatherSegment_T *ScatterGatherList =
3208                                         Command->V1.ScatterGatherList;
3209   struct scatterlist *ScatterList = Command->V1.ScatterList;
3210
3211   DAC960_V1_ClearCommand(Command);
3212
3213   if (Command->SegmentCount == 1)
3214     {
3215       if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3216         CommandMailbox->Type5.CommandOpcode = DAC960_V1_Read;
3217       else
3218         CommandMailbox->Type5.CommandOpcode = DAC960_V1_Write;
3219
3220       CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
3221       CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
3222       CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
3223       CommandMailbox->Type5.BusAddress =
3224                         (DAC960_BusAddress32_T)sg_dma_address(ScatterList);
3225     }
3226   else
3227     {
3228       int i;
3229
3230       if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3231         CommandMailbox->Type5.CommandOpcode = DAC960_V1_ReadWithScatterGather;
3232       else
3233         CommandMailbox->Type5.CommandOpcode = DAC960_V1_WriteWithScatterGather;
3234
3235       CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
3236       CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
3237       CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
3238       CommandMailbox->Type5.BusAddress = Command->V1.ScatterGatherListDMA;
3239
3240       CommandMailbox->Type5.ScatterGatherCount = Command->SegmentCount;
3241
3242       for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
3243                 ScatterGatherList->SegmentDataPointer =
3244                         (DAC960_BusAddress32_T)sg_dma_address(ScatterList);
3245                 ScatterGatherList->SegmentByteCount =
3246                         (DAC960_ByteCount32_T)sg_dma_len(ScatterList);
3247       }
3248     }
3249   DAC960_QueueCommand(Command);
3250 }
3251
3252
3253 /*
3254   DAC960_V2_QueueReadWriteCommand prepares and queues a Read/Write Command for
3255   DAC960 V2 Firmware Controllers.
3256 */
3257
3258 static void DAC960_V2_QueueReadWriteCommand(DAC960_Command_T *Command)
3259 {
3260   DAC960_Controller_T *Controller = Command->Controller;
3261   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
3262   struct scatterlist *ScatterList = Command->V2.ScatterList;
3263
3264   DAC960_V2_ClearCommand(Command);
3265
3266   CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10;
3267   CommandMailbox->SCSI_10.CommandControlBits.DataTransferControllerToHost =
3268     (Command->DmaDirection == PCI_DMA_FROMDEVICE);
3269   CommandMailbox->SCSI_10.DataTransferSize =
3270     Command->BlockCount << DAC960_BlockSizeBits;
3271   CommandMailbox->SCSI_10.RequestSenseBusAddress = Command->V2.RequestSenseDMA;
3272   CommandMailbox->SCSI_10.PhysicalDevice =
3273     Controller->V2.LogicalDriveToVirtualDevice[Command->LogicalDriveNumber];
3274   CommandMailbox->SCSI_10.RequestSenseSize = sizeof(DAC960_SCSI_RequestSense_T);
3275   CommandMailbox->SCSI_10.CDBLength = 10;
3276   CommandMailbox->SCSI_10.SCSI_CDB[0] =
3277     (Command->DmaDirection == PCI_DMA_FROMDEVICE ? 0x28 : 0x2A);
3278   CommandMailbox->SCSI_10.SCSI_CDB[2] = Command->BlockNumber >> 24;
3279   CommandMailbox->SCSI_10.SCSI_CDB[3] = Command->BlockNumber >> 16;
3280   CommandMailbox->SCSI_10.SCSI_CDB[4] = Command->BlockNumber >> 8;
3281   CommandMailbox->SCSI_10.SCSI_CDB[5] = Command->BlockNumber;
3282   CommandMailbox->SCSI_10.SCSI_CDB[7] = Command->BlockCount >> 8;
3283   CommandMailbox->SCSI_10.SCSI_CDB[8] = Command->BlockCount;
3284
3285   if (Command->SegmentCount == 1)
3286     {
3287       CommandMailbox->SCSI_10.DataTransferMemoryAddress
3288                              .ScatterGatherSegments[0]
3289                              .SegmentDataPointer =
3290         (DAC960_BusAddress64_T)sg_dma_address(ScatterList);
3291       CommandMailbox->SCSI_10.DataTransferMemoryAddress
3292                              .ScatterGatherSegments[0]
3293                              .SegmentByteCount =
3294         CommandMailbox->SCSI_10.DataTransferSize;
3295     }
3296   else
3297     {
3298       DAC960_V2_ScatterGatherSegment_T *ScatterGatherList;
3299       int i;
3300
3301       if (Command->SegmentCount > 2)
3302         {
3303           ScatterGatherList = Command->V2.ScatterGatherList;
3304           CommandMailbox->SCSI_10.CommandControlBits
3305                          .AdditionalScatterGatherListMemory = true;
3306           CommandMailbox->SCSI_10.DataTransferMemoryAddress
3307                 .ExtendedScatterGather.ScatterGatherList0Length = Command->SegmentCount;
3308           CommandMailbox->SCSI_10.DataTransferMemoryAddress
3309                          .ExtendedScatterGather.ScatterGatherList0Address =
3310             Command->V2.ScatterGatherListDMA;
3311         }
3312       else
3313         ScatterGatherList = CommandMailbox->SCSI_10.DataTransferMemoryAddress
3314                                  .ScatterGatherSegments;
3315
3316       for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
3317                 ScatterGatherList->SegmentDataPointer =
3318                         (DAC960_BusAddress64_T)sg_dma_address(ScatterList);
3319                 ScatterGatherList->SegmentByteCount =
3320                         (DAC960_ByteCount64_T)sg_dma_len(ScatterList);
3321       }
3322     }
3323   DAC960_QueueCommand(Command);
3324 }
3325
3326
3327 static int DAC960_process_queue(DAC960_Controller_T *Controller, struct request_queue *req_q)
3328 {
3329         struct request *Request;
3330         DAC960_Command_T *Command;
3331
3332    while(1) {
3333         Request = blk_peek_request(req_q);
3334         if (!Request)
3335                 return 1;
3336
3337         Command = DAC960_AllocateCommand(Controller);
3338         if (Command == NULL)
3339                 return 0;
3340
3341         if (rq_data_dir(Request) == READ) {
3342                 Command->DmaDirection = PCI_DMA_FROMDEVICE;
3343                 Command->CommandType = DAC960_ReadCommand;
3344         } else {
3345                 Command->DmaDirection = PCI_DMA_TODEVICE;
3346                 Command->CommandType = DAC960_WriteCommand;
3347         }
3348         Command->Completion = Request->end_io_data;
3349         Command->LogicalDriveNumber = (long)Request->rq_disk->private_data;
3350         Command->BlockNumber = blk_rq_pos(Request);
3351         Command->BlockCount = blk_rq_sectors(Request);
3352         Command->Request = Request;
3353         blk_start_request(Request);
3354         Command->SegmentCount = blk_rq_map_sg(req_q,
3355                   Command->Request, Command->cmd_sglist);
3356         /* pci_map_sg MAY change the value of SegCount */
3357         Command->SegmentCount = pci_map_sg(Controller->PCIDevice, Command->cmd_sglist,
3358                  Command->SegmentCount, Command->DmaDirection);
3359
3360         DAC960_QueueReadWriteCommand(Command);
3361   }
3362 }
3363
3364 /*
3365   DAC960_ProcessRequest attempts to remove one I/O Request from Controller's
3366   I/O Request Queue and queues it to the Controller.  WaitForCommand is true if
3367   this function should wait for a Command to become available if necessary.
3368   This function returns true if an I/O Request was queued and false otherwise.
3369 */
3370 static void DAC960_ProcessRequest(DAC960_Controller_T *controller)
3371 {
3372         int i;
3373
3374         if (!controller->ControllerInitialized)
3375                 return;
3376
3377         /* Do this better later! */
3378         for (i = controller->req_q_index; i < DAC960_MaxLogicalDrives; i++) {
3379                 struct request_queue *req_q = controller->RequestQueue[i];
3380
3381                 if (req_q == NULL)
3382                         continue;
3383
3384                 if (!DAC960_process_queue(controller, req_q)) {
3385                         controller->req_q_index = i;
3386                         return;
3387                 }
3388         }
3389
3390         if (controller->req_q_index == 0)
3391                 return;
3392
3393         for (i = 0; i < controller->req_q_index; i++) {
3394                 struct request_queue *req_q = controller->RequestQueue[i];
3395
3396                 if (req_q == NULL)
3397                         continue;
3398
3399                 if (!DAC960_process_queue(controller, req_q)) {
3400                         controller->req_q_index = i;
3401                         return;
3402                 }
3403         }
3404 }
3405
3406
3407 /*
3408   DAC960_queue_partial_rw extracts one bio from the request already
3409   associated with argument command, and construct a new command block to retry I/O
3410   only on that bio.  Queue that command to the controller.
3411
3412   This function re-uses a previously-allocated Command,
3413         there is no failure mode from trying to allocate a command.
3414 */
3415
3416 static void DAC960_queue_partial_rw(DAC960_Command_T *Command)
3417 {
3418   DAC960_Controller_T *Controller = Command->Controller;
3419   struct request *Request = Command->Request;
3420   struct request_queue *req_q = Controller->RequestQueue[Command->LogicalDriveNumber];
3421
3422   if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3423     Command->CommandType = DAC960_ReadRetryCommand;
3424   else
3425     Command->CommandType = DAC960_WriteRetryCommand;
3426
3427   /*
3428    * We could be more efficient with these mapping requests
3429    * and map only the portions that we need.  But since this
3430    * code should almost never be called, just go with a
3431    * simple coding.
3432    */
3433   (void)blk_rq_map_sg(req_q, Command->Request, Command->cmd_sglist);
3434
3435   (void)pci_map_sg(Controller->PCIDevice, Command->cmd_sglist, 1, Command->DmaDirection);
3436   /*
3437    * Resubmitting the request sector at a time is really tedious.
3438    * But, this should almost never happen.  So, we're willing to pay
3439    * this price so that in the end, as much of the transfer is completed
3440    * successfully as possible.
3441    */
3442   Command->SegmentCount = 1;
3443   Command->BlockNumber = blk_rq_pos(Request);
3444   Command->BlockCount = 1;
3445   DAC960_QueueReadWriteCommand(Command);
3446   return;
3447 }
3448
3449 /*
3450   DAC960_RequestFunction is the I/O Request Function for DAC960 Controllers.
3451 */
3452
3453 static void DAC960_RequestFunction(struct request_queue *RequestQueue)
3454 {
3455         DAC960_ProcessRequest(RequestQueue->queuedata);
3456 }
3457
3458 /*
3459   DAC960_ProcessCompletedBuffer performs completion processing for an
3460   individual Buffer.
3461 */
3462
3463 static inline bool DAC960_ProcessCompletedRequest(DAC960_Command_T *Command,
3464                                                  bool SuccessfulIO)
3465 {
3466         struct request *Request = Command->Request;
3467         int Error = SuccessfulIO ? 0 : -EIO;
3468
3469         pci_unmap_sg(Command->Controller->PCIDevice, Command->cmd_sglist,
3470                 Command->SegmentCount, Command->DmaDirection);
3471
3472          if (!__blk_end_request(Request, Error, Command->BlockCount << 9)) {
3473                 if (Command->Completion) {
3474                         complete(Command->Completion);
3475                         Command->Completion = NULL;
3476                 }
3477                 return true;
3478         }
3479         return false;
3480 }
3481
3482 /*
3483   DAC960_V1_ReadWriteError prints an appropriate error message for Command
3484   when an error occurs on a Read or Write operation.
3485 */
3486
3487 static void DAC960_V1_ReadWriteError(DAC960_Command_T *Command)
3488 {
3489   DAC960_Controller_T *Controller = Command->Controller;
3490   unsigned char *CommandName = "UNKNOWN";
3491   switch (Command->CommandType)
3492     {
3493     case DAC960_ReadCommand:
3494     case DAC960_ReadRetryCommand:
3495       CommandName = "READ";
3496       break;
3497     case DAC960_WriteCommand:
3498     case DAC960_WriteRetryCommand:
3499       CommandName = "WRITE";
3500       break;
3501     case DAC960_MonitoringCommand:
3502     case DAC960_ImmediateCommand:
3503     case DAC960_QueuedCommand:
3504       break;
3505     }
3506   switch (Command->V1.CommandStatus)
3507     {
3508     case DAC960_V1_IrrecoverableDataError:
3509       DAC960_Error("Irrecoverable Data Error on %s:\n",
3510                    Controller, CommandName);
3511       break;
3512     case DAC960_V1_LogicalDriveNonexistentOrOffline:
3513       DAC960_Error("Logical Drive Nonexistent or Offline on %s:\n",
3514                    Controller, CommandName);
3515       break;
3516     case DAC960_V1_AccessBeyondEndOfLogicalDrive:
3517       DAC960_Error("Attempt to Access Beyond End of Logical Drive "
3518                    "on %s:\n", Controller, CommandName);
3519       break;
3520     case DAC960_V1_BadDataEncountered:
3521       DAC960_Error("Bad Data Encountered on %s:\n", Controller, CommandName);
3522       break;
3523     default:
3524       DAC960_Error("Unexpected Error Status %04X on %s:\n",
3525                    Controller, Command->V1.CommandStatus, CommandName);
3526       break;
3527     }
3528   DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
3529                Controller, Controller->ControllerNumber,
3530                Command->LogicalDriveNumber, Command->BlockNumber,
3531                Command->BlockNumber + Command->BlockCount - 1);
3532 }
3533
3534
3535 /*
3536   DAC960_V1_ProcessCompletedCommand performs completion processing for Command
3537   for DAC960 V1 Firmware Controllers.
3538 */
3539
3540 static void DAC960_V1_ProcessCompletedCommand(DAC960_Command_T *Command)
3541 {
3542   DAC960_Controller_T *Controller = Command->Controller;
3543   DAC960_CommandType_T CommandType = Command->CommandType;
3544   DAC960_V1_CommandOpcode_T CommandOpcode =
3545     Command->V1.CommandMailbox.Common.CommandOpcode;
3546   DAC960_V1_CommandStatus_T CommandStatus = Command->V1.CommandStatus;
3547
3548   if (CommandType == DAC960_ReadCommand ||
3549       CommandType == DAC960_WriteCommand)
3550     {
3551
3552 #ifdef FORCE_RETRY_DEBUG
3553       CommandStatus = DAC960_V1_IrrecoverableDataError;
3554 #endif
3555
3556       if (CommandStatus == DAC960_V1_NormalCompletion) {
3557
3558                 if (!DAC960_ProcessCompletedRequest(Command, true))
3559                         BUG();
3560
3561       } else if (CommandStatus == DAC960_V1_IrrecoverableDataError ||
3562                 CommandStatus == DAC960_V1_BadDataEncountered)
3563         {
3564           /*
3565            * break the command down into pieces and resubmit each
3566            * piece, hoping that some of them will succeed.
3567            */
3568            DAC960_queue_partial_rw(Command);
3569            return;
3570         }
3571       else
3572         {
3573           if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
3574             DAC960_V1_ReadWriteError(Command);
3575
3576          if (!DAC960_ProcessCompletedRequest(Command, false))
3577                 BUG();
3578         }
3579     }
3580   else if (CommandType == DAC960_ReadRetryCommand ||
3581            CommandType == DAC960_WriteRetryCommand)
3582     {
3583       bool normal_completion;
3584 #ifdef FORCE_RETRY_FAILURE_DEBUG
3585       static int retry_count = 1;
3586 #endif
3587       /*
3588         Perform completion processing for the portion that was
3589         retried, and submit the next portion, if any.
3590       */
3591       normal_completion = true;
3592       if (CommandStatus != DAC960_V1_NormalCompletion) {
3593         normal_completion = false;
3594         if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
3595             DAC960_V1_ReadWriteError(Command);
3596       }
3597
3598 #ifdef FORCE_RETRY_FAILURE_DEBUG
3599       if (!(++retry_count % 10000)) {
3600               printk("V1 error retry failure test\n");
3601               normal_completion = false;
3602               DAC960_V1_ReadWriteError(Command);
3603       }
3604 #endif
3605
3606       if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
3607         DAC960_queue_partial_rw(Command);
3608         return;
3609       }
3610     }
3611
3612   else if (CommandType == DAC960_MonitoringCommand)
3613     {
3614       if (Controller->ShutdownMonitoringTimer)
3615               return;
3616       if (CommandOpcode == DAC960_V1_Enquiry)
3617         {
3618           DAC960_V1_Enquiry_T *OldEnquiry = &Controller->V1.Enquiry;
3619           DAC960_V1_Enquiry_T *NewEnquiry = Controller->V1.NewEnquiry;
3620           unsigned int OldCriticalLogicalDriveCount =
3621             OldEnquiry->CriticalLogicalDriveCount;
3622           unsigned int NewCriticalLogicalDriveCount =
3623             NewEnquiry->CriticalLogicalDriveCount;
3624           if (NewEnquiry->NumberOfLogicalDrives > Controller->LogicalDriveCount)
3625             {
3626               int LogicalDriveNumber = Controller->LogicalDriveCount - 1;
3627               while (++LogicalDriveNumber < NewEnquiry->NumberOfLogicalDrives)
3628                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3629                                 "Now Exists\n", Controller,
3630                                 LogicalDriveNumber,
3631                                 Controller->ControllerNumber,
3632                                 LogicalDriveNumber);
3633               Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
3634               DAC960_ComputeGenericDiskInfo(Controller);
3635             }
3636           if (NewEnquiry->NumberOfLogicalDrives < Controller->LogicalDriveCount)
3637             {
3638               int LogicalDriveNumber = NewEnquiry->NumberOfLogicalDrives - 1;
3639               while (++LogicalDriveNumber < Controller->LogicalDriveCount)
3640                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3641                                 "No Longer Exists\n", Controller,
3642                                 LogicalDriveNumber,
3643                                 Controller->ControllerNumber,
3644                                 LogicalDriveNumber);
3645               Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
3646               DAC960_ComputeGenericDiskInfo(Controller);
3647             }
3648           if (NewEnquiry->StatusFlags.DeferredWriteError !=
3649               OldEnquiry->StatusFlags.DeferredWriteError)
3650             DAC960_Critical("Deferred Write Error Flag is now %s\n", Controller,
3651                             (NewEnquiry->StatusFlags.DeferredWriteError
3652                              ? "TRUE" : "FALSE"));
3653           if ((NewCriticalLogicalDriveCount > 0 ||
3654                NewCriticalLogicalDriveCount != OldCriticalLogicalDriveCount) ||
3655               (NewEnquiry->OfflineLogicalDriveCount > 0 ||
3656                NewEnquiry->OfflineLogicalDriveCount !=
3657                OldEnquiry->OfflineLogicalDriveCount) ||
3658               (NewEnquiry->DeadDriveCount > 0 ||
3659                NewEnquiry->DeadDriveCount !=
3660                OldEnquiry->DeadDriveCount) ||
3661               (NewEnquiry->EventLogSequenceNumber !=
3662                OldEnquiry->EventLogSequenceNumber) ||
3663               Controller->MonitoringTimerCount == 0 ||
3664               time_after_eq(jiffies, Controller->SecondaryMonitoringTime
3665                + DAC960_SecondaryMonitoringInterval))
3666             {
3667               Controller->V1.NeedLogicalDriveInformation = true;
3668               Controller->V1.NewEventLogSequenceNumber =
3669                 NewEnquiry->EventLogSequenceNumber;
3670               Controller->V1.NeedErrorTableInformation = true;
3671               Controller->V1.NeedDeviceStateInformation = true;
3672               Controller->V1.StartDeviceStateScan = true;
3673               Controller->V1.NeedBackgroundInitializationStatus =
3674                 Controller->V1.BackgroundInitializationStatusSupported;
3675               Controller->SecondaryMonitoringTime = jiffies;
3676             }
3677           if (NewEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
3678               NewEnquiry->RebuildFlag
3679               == DAC960_V1_BackgroundRebuildInProgress ||
3680               OldEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
3681               OldEnquiry->RebuildFlag == DAC960_V1_BackgroundRebuildInProgress)
3682             {
3683               Controller->V1.NeedRebuildProgress = true;
3684               Controller->V1.RebuildProgressFirst =
3685                 (NewEnquiry->CriticalLogicalDriveCount <
3686                  OldEnquiry->CriticalLogicalDriveCount);
3687             }
3688           if (OldEnquiry->RebuildFlag == DAC960_V1_BackgroundCheckInProgress)
3689             switch (NewEnquiry->RebuildFlag)
3690               {
3691               case DAC960_V1_NoStandbyRebuildOrCheckInProgress:
3692                 DAC960_Progress("Consistency Check Completed Successfully\n",
3693                                 Controller);
3694                 break;
3695               case DAC960_V1_StandbyRebuildInProgress:
3696               case DAC960_V1_BackgroundRebuildInProgress:
3697                 break;
3698               case DAC960_V1_BackgroundCheckInProgress:
3699                 Controller->V1.NeedConsistencyCheckProgress = true;
3700                 break;
3701               case DAC960_V1_StandbyRebuildCompletedWithError:
3702                 DAC960_Progress("Consistency Check Completed with Error\n",
3703                                 Controller);
3704                 break;
3705               case DAC960_V1_BackgroundRebuildOrCheckFailed_DriveFailed:
3706                 DAC960_Progress("Consistency Check Failed - "
3707                                 "Physical Device Failed\n", Controller);
3708                 break;
3709               case DAC960_V1_BackgroundRebuildOrCheckFailed_LogicalDriveFailed:
3710                 DAC960_Progress("Consistency Check Failed - "
3711                                 "Logical Drive Failed\n", Controller);
3712                 break;
3713               case DAC960_V1_BackgroundRebuildOrCheckFailed_OtherCauses:
3714                 DAC960_Progress("Consistency Check Failed - Other Causes\n",
3715                                 Controller);
3716                 break;
3717               case DAC960_V1_BackgroundRebuildOrCheckSuccessfullyTerminated:
3718                 DAC960_Progress("Consistency Check Successfully Terminated\n",
3719                                 Controller);
3720                 break;
3721               }
3722           else if (NewEnquiry->RebuildFlag
3723                    == DAC960_V1_BackgroundCheckInProgress)
3724             Controller->V1.NeedConsistencyCheckProgress = true;
3725           Controller->MonitoringAlertMode =
3726             (NewEnquiry->CriticalLogicalDriveCount > 0 ||
3727              NewEnquiry->OfflineLogicalDriveCount > 0 ||
3728              NewEnquiry->DeadDriveCount > 0);
3729           if (NewEnquiry->RebuildFlag > DAC960_V1_BackgroundCheckInProgress)
3730             {
3731               Controller->V1.PendingRebuildFlag = NewEnquiry->RebuildFlag;
3732               Controller->V1.RebuildFlagPending = true;
3733             }
3734           memcpy(&Controller->V1.Enquiry, &Controller->V1.NewEnquiry,
3735                  sizeof(DAC960_V1_Enquiry_T));
3736         }
3737       else if (CommandOpcode == DAC960_V1_PerformEventLogOperation)
3738         {
3739           static char
3740             *DAC960_EventMessages[] =
3741                { "killed because write recovery failed",
3742                  "killed because of SCSI bus reset failure",
3743                  "killed because of double check condition",
3744                  "killed because it was removed",
3745                  "killed because of gross error on SCSI chip",
3746                  "killed because of bad tag returned from drive",
3747                  "killed because of timeout on SCSI command",
3748                  "killed because of reset SCSI command issued from system",
3749                  "killed because busy or parity error count exceeded limit",
3750                  "killed because of 'kill drive' command from system",
3751                  "killed because of selection timeout",
3752                  "killed due to SCSI phase sequence error",
3753                  "killed due to unknown status" };
3754           DAC960_V1_EventLogEntry_T *EventLogEntry =
3755                 Controller->V1.EventLogEntry;
3756           if (EventLogEntry->SequenceNumber ==
3757               Controller->V1.OldEventLogSequenceNumber)
3758             {
3759               unsigned char SenseKey = EventLogEntry->SenseKey;
3760               unsigned char AdditionalSenseCode =
3761                 EventLogEntry->AdditionalSenseCode;
3762               unsigned char AdditionalSenseCodeQualifier =
3763                 EventLogEntry->AdditionalSenseCodeQualifier;
3764               if (SenseKey == DAC960_SenseKey_VendorSpecific &&
3765                   AdditionalSenseCode == 0x80 &&
3766                   AdditionalSenseCodeQualifier <
3767                   ARRAY_SIZE(DAC960_EventMessages))
3768                 DAC960_Critical("Physical Device %d:%d %s\n", Controller,
3769                                 EventLogEntry->Channel,
3770                                 EventLogEntry->TargetID,
3771                                 DAC960_EventMessages[
3772                                   AdditionalSenseCodeQualifier]);
3773               else if (SenseKey == DAC960_SenseKey_UnitAttention &&
3774                        AdditionalSenseCode == 0x29)
3775                 {
3776                   if (Controller->MonitoringTimerCount > 0)
3777                     Controller->V1.DeviceResetCount[EventLogEntry->Channel]
3778                                                    [EventLogEntry->TargetID]++;
3779                 }
3780               else if (!(SenseKey == DAC960_SenseKey_NoSense ||
3781                          (SenseKey == DAC960_SenseKey_NotReady &&
3782                           AdditionalSenseCode == 0x04 &&
3783                           (AdditionalSenseCodeQualifier == 0x01 ||
3784                            AdditionalSenseCodeQualifier == 0x02))))
3785                 {
3786                   DAC960_Critical("Physical Device %d:%d Error Log: "
3787                                   "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
3788                                   Controller,
3789                                   EventLogEntry->Channel,
3790                                   EventLogEntry->TargetID,
3791                                   SenseKey,
3792                                   AdditionalSenseCode,
3793                                   AdditionalSenseCodeQualifier);
3794                   DAC960_Critical("Physical Device %d:%d Error Log: "
3795                                   "Information = %02X%02X%02X%02X "
3796                                   "%02X%02X%02X%02X\n",
3797                                   Controller,
3798                                   EventLogEntry->Channel,
3799                                   EventLogEntry->TargetID,
3800                                   EventLogEntry->Information[0],
3801                                   EventLogEntry->Information[1],
3802                                   EventLogEntry->Information[2],
3803                                   EventLogEntry->Information[3],
3804                                   EventLogEntry->CommandSpecificInformation[0],
3805                                   EventLogEntry->CommandSpecificInformation[1],
3806                                   EventLogEntry->CommandSpecificInformation[2],
3807                                   EventLogEntry->CommandSpecificInformation[3]);
3808                 }
3809             }
3810           Controller->V1.OldEventLogSequenceNumber++;
3811         }
3812       else if (CommandOpcode == DAC960_V1_GetErrorTable)
3813         {
3814           DAC960_V1_ErrorTable_T *OldErrorTable = &Controller->V1.ErrorTable;
3815           DAC960_V1_ErrorTable_T *NewErrorTable = Controller->V1.NewErrorTable;
3816           int Channel, TargetID;
3817           for (Channel = 0; Channel < Controller->Channels; Channel++)
3818             for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
3819               {
3820                 DAC960_V1_ErrorTableEntry_T *NewErrorEntry =
3821                   &NewErrorTable->ErrorTableEntries[Channel][TargetID];
3822                 DAC960_V1_ErrorTableEntry_T *OldErrorEntry =
3823                   &OldErrorTable->ErrorTableEntries[Channel][TargetID];
3824                 if ((NewErrorEntry->ParityErrorCount !=
3825                      OldErrorEntry->ParityErrorCount) ||
3826                     (NewErrorEntry->SoftErrorCount !=
3827                      OldErrorEntry->SoftErrorCount) ||
3828                     (NewErrorEntry->HardErrorCount !=
3829                      OldErrorEntry->HardErrorCount) ||
3830                     (NewErrorEntry->MiscErrorCount !=
3831                      OldErrorEntry->MiscErrorCount))
3832                   DAC960_Critical("Physical Device %d:%d Errors: "
3833                                   "Parity = %d, Soft = %d, "
3834                                   "Hard = %d, Misc = %d\n",
3835                                   Controller, Channel, TargetID,
3836                                   NewErrorEntry->ParityErrorCount,
3837                                   NewErrorEntry->SoftErrorCount,
3838                                   NewErrorEntry->HardErrorCount,
3839                                   NewErrorEntry->MiscErrorCount);
3840               }
3841           memcpy(&Controller->V1.ErrorTable, Controller->V1.NewErrorTable,
3842                  sizeof(DAC960_V1_ErrorTable_T));
3843         }
3844       else if (CommandOpcode == DAC960_V1_GetDeviceState)
3845         {
3846           DAC960_V1_DeviceState_T *OldDeviceState =
3847             &Controller->V1.DeviceState[Controller->V1.DeviceStateChannel]
3848                                        [Controller->V1.DeviceStateTargetID];
3849           DAC960_V1_DeviceState_T *NewDeviceState =
3850             Controller->V1.NewDeviceState;
3851           if (NewDeviceState->DeviceState != OldDeviceState->DeviceState)
3852             DAC960_Critical("Physical Device %d:%d is now %s\n", Controller,
3853                             Controller->V1.DeviceStateChannel,
3854                             Controller->V1.DeviceStateTargetID,
3855                             (NewDeviceState->DeviceState
3856                              == DAC960_V1_Device_Dead
3857                              ? "DEAD"
3858                              : NewDeviceState->DeviceState
3859                                == DAC960_V1_Device_WriteOnly
3860                                ? "WRITE-ONLY"
3861                                : NewDeviceState->DeviceState
3862                                  == DAC960_V1_Device_Online
3863                                  ? "ONLINE" : "STANDBY"));
3864           if (OldDeviceState->DeviceState == DAC960_V1_Device_Dead &&
3865               NewDeviceState->DeviceState != DAC960_V1_Device_Dead)
3866             {
3867               Controller->V1.NeedDeviceInquiryInformation = true;
3868               Controller->V1.NeedDeviceSerialNumberInformation = true;
3869               Controller->V1.DeviceResetCount
3870                              [Controller->V1.DeviceStateChannel]
3871                              [Controller->V1.DeviceStateTargetID] = 0;
3872             }
3873           memcpy(OldDeviceState, NewDeviceState,
3874                  sizeof(DAC960_V1_DeviceState_T));
3875         }
3876       else if (CommandOpcode == DAC960_V1_GetLogicalDriveInformation)
3877         {
3878           int LogicalDriveNumber;
3879           for (LogicalDriveNumber = 0;
3880                LogicalDriveNumber < Controller->LogicalDriveCount;
3881                LogicalDriveNumber++)
3882             {
3883               DAC960_V1_LogicalDriveInformation_T *OldLogicalDriveInformation =
3884                 &Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
3885               DAC960_V1_LogicalDriveInformation_T *NewLogicalDriveInformation =
3886                 &(*Controller->V1.NewLogicalDriveInformation)[LogicalDriveNumber];
3887               if (NewLogicalDriveInformation->LogicalDriveState !=
3888                   OldLogicalDriveInformation->LogicalDriveState)
3889                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3890                                 "is now %s\n", Controller,
3891                                 LogicalDriveNumber,
3892                                 Controller->ControllerNumber,
3893                                 LogicalDriveNumber,
3894                                 (NewLogicalDriveInformation->LogicalDriveState
3895                                  == DAC960_V1_LogicalDrive_Online
3896                                  ? "ONLINE"
3897                                  : NewLogicalDriveInformation->LogicalDriveState
3898                                    == DAC960_V1_LogicalDrive_Critical
3899                                    ? "CRITICAL" : "OFFLINE"));
3900               if (NewLogicalDriveInformation->WriteBack !=
3901                   OldLogicalDriveInformation->WriteBack)
3902                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3903                                 "is now %s\n", Controller,
3904                                 LogicalDriveNumber,
3905                                 Controller->ControllerNumber,
3906                                 LogicalDriveNumber,
3907                                 (NewLogicalDriveInformation->WriteBack
3908                                  ? "WRITE BACK" : "WRITE THRU"));
3909             }
3910           memcpy(&Controller->V1.LogicalDriveInformation,
3911                  Controller->V1.NewLogicalDriveInformation,
3912                  sizeof(DAC960_V1_LogicalDriveInformationArray_T));
3913         }
3914       else if (CommandOpcode == DAC960_V1_GetRebuildProgress)
3915         {
3916           unsigned int LogicalDriveNumber =
3917             Controller->V1.RebuildProgress->LogicalDriveNumber;
3918           unsigned int LogicalDriveSize =
3919             Controller->V1.RebuildProgress->LogicalDriveSize;
3920           unsigned int BlocksCompleted =
3921             LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
3922           if (CommandStatus == DAC960_V1_NoRebuildOrCheckInProgress &&
3923               Controller->V1.LastRebuildStatus == DAC960_V1_NormalCompletion)
3924             CommandStatus = DAC960_V1_RebuildSuccessful;
3925           switch (CommandStatus)
3926             {
3927             case DAC960_V1_NormalCompletion:
3928               Controller->EphemeralProgressMessage = true;
3929               DAC960_Progress("Rebuild in Progress: "
3930                               "Logical Drive %d (/dev/rd/c%dd%d) "
3931                               "%d%% completed\n",
3932                               Controller, LogicalDriveNumber,
3933                               Controller->ControllerNumber,
3934                               LogicalDriveNumber,
3935                               (100 * (BlocksCompleted >> 7))
3936                               / (LogicalDriveSize >> 7));
3937               Controller->EphemeralProgressMessage = false;
3938               break;
3939             case DAC960_V1_RebuildFailed_LogicalDriveFailure:
3940               DAC960_Progress("Rebuild Failed due to "
3941                               "Logical Drive Failure\n", Controller);
3942               break;
3943             case DAC960_V1_RebuildFailed_BadBlocksOnOther:
3944               DAC960_Progress("Rebuild Failed due to "
3945                               "Bad Blocks on Other Drives\n", Controller);
3946               break;
3947             case DAC960_V1_RebuildFailed_NewDriveFailed:
3948               DAC960_Progress("Rebuild Failed due to "
3949                               "Failure of Drive Being Rebuilt\n", Controller);
3950               break;
3951             case DAC960_V1_NoRebuildOrCheckInProgress:
3952               break;
3953             case DAC960_V1_RebuildSuccessful:
3954               DAC960_Progress("Rebuild Completed Successfully\n", Controller);
3955               break;
3956             case DAC960_V1_RebuildSuccessfullyTerminated:
3957               DAC960_Progress("Rebuild Successfully Terminated\n", Controller);
3958               break;
3959             }
3960           Controller->V1.LastRebuildStatus = CommandStatus;
3961           if (CommandType != DAC960_MonitoringCommand &&
3962               Controller->V1.RebuildStatusPending)
3963             {
3964               Command->V1.CommandStatus = Controller->V1.PendingRebuildStatus;
3965               Controller->V1.RebuildStatusPending = false;
3966             }
3967           else if (CommandType == DAC960_MonitoringCommand &&
3968                    CommandStatus != DAC960_V1_NormalCompletion &&
3969                    CommandStatus != DAC960_V1_NoRebuildOrCheckInProgress)
3970             {
3971               Controller->V1.PendingRebuildStatus = CommandStatus;
3972               Controller->V1.RebuildStatusPending = true;
3973             }
3974         }
3975       else if (CommandOpcode == DAC960_V1_RebuildStat)
3976         {
3977           unsigned int LogicalDriveNumber =
3978             Controller->V1.RebuildProgress->LogicalDriveNumber;
3979           unsigned int LogicalDriveSize =
3980             Controller->V1.RebuildProgress->LogicalDriveSize;
3981           unsigned int BlocksCompleted =
3982             LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
3983           if (CommandStatus == DAC960_V1_NormalCompletion)
3984             {
3985               Controller->EphemeralProgressMessage = true;
3986               DAC960_Progress("Consistency Check in Progress: "
3987                               "Logical Drive %d (/dev/rd/c%dd%d) "
3988                               "%d%% completed\n",
3989                               Controller, LogicalDriveNumber,
3990                               Controller->ControllerNumber,
3991                               LogicalDriveNumber,
3992                               (100 * (BlocksCompleted >> 7))
3993                               / (LogicalDriveSize >> 7));
3994               Controller->EphemeralProgressMessage = false;
3995             }
3996         }
3997       else if (CommandOpcode == DAC960_V1_BackgroundInitializationControl)
3998         {
3999           unsigned int LogicalDriveNumber =
4000             Controller->V1.BackgroundInitializationStatus->LogicalDriveNumber;
4001           unsigned int LogicalDriveSize =
4002             Controller->V1.BackgroundInitializationStatus->LogicalDriveSize;
4003           unsigned int BlocksCompleted =
4004             Controller->V1.BackgroundInitializationStatus->BlocksCompleted;
4005           switch (CommandStatus)
4006             {
4007             case DAC960_V1_NormalCompletion:
4008               switch (Controller->V1.BackgroundInitializationStatus->Status)
4009                 {
4010                 case DAC960_V1_BackgroundInitializationInvalid:
4011                   break;
4012                 case DAC960_V1_BackgroundInitializationStarted:
4013                   DAC960_Progress("Background Initialization Started\n",
4014                                   Controller);
4015                   break;
4016                 case DAC960_V1_BackgroundInitializationInProgress:
4017                   if (BlocksCompleted ==
4018                       Controller->V1.LastBackgroundInitializationStatus.
4019                                 BlocksCompleted &&
4020                       LogicalDriveNumber ==
4021                       Controller->V1.LastBackgroundInitializationStatus.
4022                                 LogicalDriveNumber)
4023                     break;
4024                   Controller->EphemeralProgressMessage = true;
4025                   DAC960_Progress("Background Initialization in Progress: "
4026                                   "Logical Drive %d (/dev/rd/c%dd%d) "
4027                                   "%d%% completed\n",
4028                                   Controller, LogicalDriveNumber,
4029                                   Controller->ControllerNumber,
4030                                   LogicalDriveNumber,
4031                                   (100 * (BlocksCompleted >> 7))
4032                                   / (LogicalDriveSize >> 7));
4033                   Controller->EphemeralProgressMessage = false;
4034                   break;
4035                 case DAC960_V1_BackgroundInitializationSuspended:
4036                   DAC960_Progress("Background Initialization Suspended\n",
4037                                   Controller);
4038                   break;
4039                 case DAC960_V1_BackgroundInitializationCancelled:
4040                   DAC960_Progress("Background Initialization Cancelled\n",
4041                                   Controller);
4042                   break;
4043                 }
4044               memcpy(&Controller->V1.LastBackgroundInitializationStatus,
4045                      Controller->V1.BackgroundInitializationStatus,
4046                      sizeof(DAC960_V1_BackgroundInitializationStatus_T));
4047               break;
4048             case DAC960_V1_BackgroundInitSuccessful:
4049               if (Controller->V1.BackgroundInitializationStatus->Status ==
4050                   DAC960_V1_BackgroundInitializationInProgress)
4051                 DAC960_Progress("Background Initialization "
4052                                 "Completed Successfully\n", Controller);
4053               Controller->V1.BackgroundInitializationStatus->Status =
4054                 DAC960_V1_BackgroundInitializationInvalid;
4055               break;
4056             case DAC960_V1_BackgroundInitAborted:
4057               if (Controller->V1.BackgroundInitializationStatus->Status ==
4058                   DAC960_V1_BackgroundInitializationInProgress)
4059                 DAC960_Progress("Background Initialization Aborted\n",
4060                                 Controller);
4061               Controller->V1.BackgroundInitializationStatus->Status =
4062                 DAC960_V1_BackgroundInitializationInvalid;
4063               break;
4064             case DAC960_V1_NoBackgroundInitInProgress:
4065               break;
4066             }
4067         }
4068       else if (CommandOpcode == DAC960_V1_DCDB)
4069         {
4070            /*
4071              This is a bit ugly.
4072
4073              The InquiryStandardData and
4074              the InquiryUntitSerialNumber information
4075              retrieval operations BOTH use the DAC960_V1_DCDB
4076              commands.  the test above can't distinguish between
4077              these two cases.
4078
4079              Instead, we rely on the order of code later in this
4080              function to ensure that DeviceInquiryInformation commands
4081              are submitted before DeviceSerialNumber commands.
4082            */
4083            if (Controller->V1.NeedDeviceInquiryInformation)
4084              {
4085                 DAC960_SCSI_Inquiry_T *InquiryStandardData =
4086                         &Controller->V1.InquiryStandardData
4087                                 [Controller->V1.DeviceStateChannel]
4088                                 [Controller->V1.DeviceStateTargetID];
4089                 if (CommandStatus != DAC960_V1_NormalCompletion)
4090                    {
4091                         memset(InquiryStandardData, 0,
4092                                 sizeof(DAC960_SCSI_Inquiry_T));
4093                         InquiryStandardData->PeripheralDeviceType = 0x1F;
4094                     }
4095                  else
4096                         memcpy(InquiryStandardData,
4097                                 Controller->V1.NewInquiryStandardData,
4098                                 sizeof(DAC960_SCSI_Inquiry_T));
4099                  Controller->V1.NeedDeviceInquiryInformation = false;
4100               }
4101            else if (Controller->V1.NeedDeviceSerialNumberInformation)
4102               {
4103                 DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4104                   &Controller->V1.InquiryUnitSerialNumber
4105                                 [Controller->V1.DeviceStateChannel]
4106                                 [Controller->V1.DeviceStateTargetID];
4107                  if (CommandStatus != DAC960_V1_NormalCompletion)
4108                    {
4109                         memset(InquiryUnitSerialNumber, 0,
4110                                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4111                         InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
4112                     }
4113                   else
4114                         memcpy(InquiryUnitSerialNumber,
4115                                 Controller->V1.NewInquiryUnitSerialNumber,
4116                                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4117               Controller->V1.NeedDeviceSerialNumberInformation = false;
4118              }
4119         }
4120       /*
4121         Begin submitting new monitoring commands.
4122        */
4123       if (Controller->V1.NewEventLogSequenceNumber
4124           - Controller->V1.OldEventLogSequenceNumber > 0)
4125         {
4126           Command->V1.CommandMailbox.Type3E.CommandOpcode =
4127             DAC960_V1_PerformEventLogOperation;
4128           Command->V1.CommandMailbox.Type3E.OperationType =
4129             DAC960_V1_GetEventLogEntry;
4130           Command->V1.CommandMailbox.Type3E.OperationQualifier = 1;
4131           Command->V1.CommandMailbox.Type3E.SequenceNumber =
4132             Controller->V1.OldEventLogSequenceNumber;
4133           Command->V1.CommandMailbox.Type3E.BusAddress =
4134                 Controller->V1.EventLogEntryDMA;
4135           DAC960_QueueCommand(Command);
4136           return;
4137         }
4138       if (Controller->V1.NeedErrorTableInformation)
4139         {
4140           Controller->V1.NeedErrorTableInformation = false;
4141           Command->V1.CommandMailbox.Type3.CommandOpcode =
4142             DAC960_V1_GetErrorTable;
4143           Command->V1.CommandMailbox.Type3.BusAddress =
4144                 Controller->V1.NewErrorTableDMA;
4145           DAC960_QueueCommand(Command);
4146           return;
4147         }
4148       if (Controller->V1.NeedRebuildProgress &&
4149           Controller->V1.RebuildProgressFirst)
4150         {
4151           Controller->V1.NeedRebuildProgress = false;
4152           Command->V1.CommandMailbox.Type3.CommandOpcode =
4153             DAC960_V1_GetRebuildProgress;
4154           Command->V1.CommandMailbox.Type3.BusAddress =
4155             Controller->V1.RebuildProgressDMA;
4156           DAC960_QueueCommand(Command);
4157           return;
4158         }
4159       if (Controller->V1.NeedDeviceStateInformation)
4160         {
4161           if (Controller->V1.NeedDeviceInquiryInformation)
4162             {
4163               DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
4164               dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
4165
4166               dma_addr_t NewInquiryStandardDataDMA =
4167                 Controller->V1.NewInquiryStandardDataDMA;
4168
4169               Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
4170               Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
4171               DCDB->Channel = Controller->V1.DeviceStateChannel;
4172               DCDB->TargetID = Controller->V1.DeviceStateTargetID;
4173               DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
4174               DCDB->EarlyStatus = false;
4175               DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
4176               DCDB->NoAutomaticRequestSense = false;
4177               DCDB->DisconnectPermitted = true;
4178               DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
4179               DCDB->BusAddress = NewInquiryStandardDataDMA;
4180               DCDB->CDBLength = 6;
4181               DCDB->TransferLengthHigh4 = 0;
4182               DCDB->SenseLength = sizeof(DCDB->SenseData);
4183               DCDB->CDB[0] = 0x12; /* INQUIRY */
4184               DCDB->CDB[1] = 0; /* EVPD = 0 */
4185               DCDB->CDB[2] = 0; /* Page Code */
4186               DCDB->CDB[3] = 0; /* Reserved */
4187               DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
4188               DCDB->CDB[5] = 0; /* Control */
4189               DAC960_QueueCommand(Command);
4190               return;
4191             }
4192           if (Controller->V1.NeedDeviceSerialNumberInformation)
4193             {
4194               DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
4195               dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
4196               dma_addr_t NewInquiryUnitSerialNumberDMA =
4197                         Controller->V1.NewInquiryUnitSerialNumberDMA;
4198
4199               Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
4200               Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
4201               DCDB->Channel = Controller->V1.DeviceStateChannel;
4202               DCDB->TargetID = Controller->V1.DeviceStateTargetID;
4203               DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
4204               DCDB->EarlyStatus = false;
4205               DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
4206               DCDB->NoAutomaticRequestSense = false;
4207               DCDB->DisconnectPermitted = true;
4208               DCDB->TransferLength =
4209                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
4210               DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
4211               DCDB->CDBLength = 6;
4212               DCDB->TransferLengthHigh4 = 0;
4213               DCDB->SenseLength = sizeof(DCDB->SenseData);
4214               DCDB->CDB[0] = 0x12; /* INQUIRY */
4215               DCDB->CDB[1] = 1; /* EVPD = 1 */
4216               DCDB->CDB[2] = 0x80; /* Page Code */
4217               DCDB->CDB[3] = 0; /* Reserved */
4218               DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
4219               DCDB->CDB[5] = 0; /* Control */
4220               DAC960_QueueCommand(Command);
4221               return;
4222             }
4223           if (Controller->V1.StartDeviceStateScan)
4224             {
4225               Controller->V1.DeviceStateChannel = 0;
4226               Controller->V1.DeviceStateTargetID = 0;
4227               Controller->V1.StartDeviceStateScan = false;
4228             }
4229           else if (++Controller->V1.DeviceStateTargetID == Controller->Targets)
4230             {
4231               Controller->V1.DeviceStateChannel++;
4232               Controller->V1.DeviceStateTargetID = 0;
4233             }
4234           if (Controller->V1.DeviceStateChannel < Controller->Channels)
4235             {
4236               Controller->V1.NewDeviceState->DeviceState =
4237                 DAC960_V1_Device_Dead;
4238               Command->V1.CommandMailbox.Type3D.CommandOpcode =
4239                 DAC960_V1_GetDeviceState;
4240               Command->V1.CommandMailbox.Type3D.Channel =
4241                 Controller->V1.DeviceStateChannel;
4242               Command->V1.CommandMailbox.Type3D.TargetID =
4243                 Controller->V1.DeviceStateTargetID;
4244               Command->V1.CommandMailbox.Type3D.BusAddress =
4245                 Controller->V1.NewDeviceStateDMA;
4246               DAC960_QueueCommand(Command);
4247               return;
4248             }
4249           Controller->V1.NeedDeviceStateInformation = false;
4250         }
4251       if (Controller->V1.NeedLogicalDriveInformation)
4252         {
4253           Controller->V1.NeedLogicalDriveInformation = false;
4254           Command->V1.CommandMailbox.Type3.CommandOpcode =
4255             DAC960_V1_GetLogicalDriveInformation;
4256           Command->V1.CommandMailbox.Type3.BusAddress =
4257             Controller->V1.NewLogicalDriveInformationDMA;
4258           DAC960_QueueCommand(Command);
4259           return;
4260         }
4261       if (Controller->V1.NeedRebuildProgress)
4262         {
4263           Controller->V1.NeedRebuildProgress = false;
4264           Command->V1.CommandMailbox.Type3.CommandOpcode =
4265             DAC960_V1_GetRebuildProgress;
4266           Command->V1.CommandMailbox.Type3.BusAddress =
4267                 Controller->V1.RebuildProgressDMA;
4268           DAC960_QueueCommand(Command);
4269           return;
4270         }
4271       if (Controller->V1.NeedConsistencyCheckProgress)
4272         {
4273           Controller->V1.NeedConsistencyCheckProgress = false;
4274           Command->V1.CommandMailbox.Type3.CommandOpcode =
4275             DAC960_V1_RebuildStat;
4276           Command->V1.CommandMailbox.Type3.BusAddress =
4277             Controller->V1.RebuildProgressDMA;
4278           DAC960_QueueCommand(Command);
4279           return;
4280         }
4281       if (Controller->V1.NeedBackgroundInitializationStatus)
4282         {
4283           Controller->V1.NeedBackgroundInitializationStatus = false;
4284           Command->V1.CommandMailbox.Type3B.CommandOpcode =
4285             DAC960_V1_BackgroundInitializationControl;
4286           Command->V1.CommandMailbox.Type3B.CommandOpcode2 = 0x20;
4287           Command->V1.CommandMailbox.Type3B.BusAddress =
4288             Controller->V1.BackgroundInitializationStatusDMA;
4289           DAC960_QueueCommand(Command);
4290           return;
4291         }
4292       Controller->MonitoringTimerCount++;
4293       Controller->MonitoringTimer.expires =
4294         jiffies + DAC960_MonitoringTimerInterval;
4295         add_timer(&Controller->MonitoringTimer);
4296     }
4297   if (CommandType == DAC960_ImmediateCommand)
4298     {
4299       complete(Command->Completion);
4300       Command->Completion = NULL;
4301       return;
4302     }
4303   if (CommandType == DAC960_QueuedCommand)
4304     {
4305       DAC960_V1_KernelCommand_T *KernelCommand = Command->V1.KernelCommand;
4306       KernelCommand->CommandStatus = Command->V1.CommandStatus;
4307       Command->V1.KernelCommand = NULL;
4308       if (CommandOpcode == DAC960_V1_DCDB)
4309         Controller->V1.DirectCommandActive[KernelCommand->DCDB->Channel]
4310                                           [KernelCommand->DCDB->TargetID] =
4311           false;
4312       DAC960_DeallocateCommand(Command);
4313       KernelCommand->CompletionFunction(KernelCommand);
4314       return;
4315     }
4316   /*
4317     Queue a Status Monitoring Command to the Controller using the just
4318     completed Command if one was deferred previously due to lack of a
4319     free Command when the Monitoring Timer Function was called.
4320   */
4321   if (Controller->MonitoringCommandDeferred)
4322     {
4323       Controller->MonitoringCommandDeferred = false;
4324       DAC960_V1_QueueMonitoringCommand(Command);
4325       return;
4326     }
4327   /*
4328     Deallocate the Command.
4329   */
4330   DAC960_DeallocateCommand(Command);
4331   /*
4332     Wake up any processes waiting on a free Command.
4333   */
4334   wake_up(&Controller->CommandWaitQueue);
4335 }
4336
4337
4338 /*
4339   DAC960_V2_ReadWriteError prints an appropriate error message for Command
4340   when an error occurs on a Read or Write operation.
4341 */
4342
4343 static void DAC960_V2_ReadWriteError(DAC960_Command_T *Command)
4344 {
4345   DAC960_Controller_T *Controller = Command->Controller;
4346   unsigned char *SenseErrors[] = { "NO SENSE", "RECOVERED ERROR",
4347                                    "NOT READY", "MEDIUM ERROR",
4348                                    "HARDWARE ERROR", "ILLEGAL REQUEST",
4349                                    "UNIT ATTENTION", "DATA PROTECT",
4350                                    "BLANK CHECK", "VENDOR-SPECIFIC",
4351                                    "COPY ABORTED", "ABORTED COMMAND",
4352                                    "EQUAL", "VOLUME OVERFLOW",
4353                                    "MISCOMPARE", "RESERVED" };
4354   unsigned char *CommandName = "UNKNOWN";
4355   switch (Command->CommandType)
4356     {
4357     case DAC960_ReadCommand:
4358     case DAC960_ReadRetryCommand:
4359       CommandName = "READ";
4360       break;
4361     case DAC960_WriteCommand:
4362     case DAC960_WriteRetryCommand:
4363       CommandName = "WRITE";
4364       break;
4365     case DAC960_MonitoringCommand:
4366     case DAC960_ImmediateCommand:
4367     case DAC960_QueuedCommand:
4368       break;
4369     }
4370   DAC960_Error("Error Condition %s on %s:\n", Controller,
4371                SenseErrors[Command->V2.RequestSense->SenseKey], CommandName);
4372   DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
4373                Controller, Controller->ControllerNumber,
4374                Command->LogicalDriveNumber, Command->BlockNumber,
4375                Command->BlockNumber + Command->BlockCount - 1);
4376 }
4377
4378
4379 /*
4380   DAC960_V2_ReportEvent prints an appropriate message when a Controller Event
4381   occurs.
4382 */
4383
4384 static void DAC960_V2_ReportEvent(DAC960_Controller_T *Controller,
4385                                   DAC960_V2_Event_T *Event)
4386 {
4387   DAC960_SCSI_RequestSense_T *RequestSense =
4388     (DAC960_SCSI_RequestSense_T *) &Event->RequestSenseData;
4389   unsigned char MessageBuffer[DAC960_LineBufferSize];
4390   static struct { int EventCode; unsigned char *EventMessage; } EventList[] =
4391     { /* Physical Device Events (0x0000 - 0x007F) */
4392       { 0x0001, "P Online" },
4393       { 0x0002, "P Standby" },
4394       { 0x0005, "P Automatic Rebuild Started" },
4395       { 0x0006, "P Manual Rebuild Started" },
4396       { 0x0007, "P Rebuild Completed" },
4397       { 0x0008, "P Rebuild Cancelled" },
4398       { 0x0009, "P Rebuild Failed for Unknown Reasons" },
4399       { 0x000A, "P Rebuild Failed due to New Physical Device" },
4400       { 0x000B, "P Rebuild Failed due to Logical Drive Failure" },
4401       { 0x000C, "S Offline" },
4402       { 0x000D, "P Found" },
4403       { 0x000E, "P Removed" },
4404       { 0x000F, "P Unconfigured" },
4405       { 0x0010, "P Expand Capacity Started" },
4406       { 0x0011, "P Expand Capacity Completed" },
4407       { 0x0012, "P Expand Capacity Failed" },
4408       { 0x0013, "P Command Timed Out" },
4409       { 0x0014, "P Command Aborted" },
4410       { 0x0015, "P Command Retried" },
4411       { 0x0016, "P Parity Error" },
4412       { 0x0017, "P Soft Error" },
4413       { 0x0018, "P Miscellaneous Error" },
4414       { 0x0019, "P Reset" },
4415       { 0x001A, "P Active Spare Found" },
4416       { 0x001B, "P Warm Spare Found" },
4417       { 0x001C, "S Sense Data Received" },
4418       { 0x001D, "P Initialization Started" },
4419       { 0x001E, "P Initialization Completed" },
4420       { 0x001F, "P Initialization Failed" },
4421       { 0x0020, "P Initialization Cancelled" },
4422       { 0x0021, "P Failed because Write Recovery Failed" },
4423       { 0x0022, "P Failed because SCSI Bus Reset Failed" },
4424       { 0x0023, "P Failed because of Double Check Condition" },
4425       { 0x0024, "P Failed because Device Cannot Be Accessed" },
4426       { 0x0025, "P Failed because of Gross Error on SCSI Processor" },
4427       { 0x0026, "P Failed because of Bad Tag from Device" },
4428       { 0x0027, "P Failed because of Command Timeout" },
4429       { 0x0028, "P Failed because of System Reset" },
4430       { 0x0029, "P Failed because of Busy Status or Parity Error" },
4431       { 0x002A, "P Failed because Host Set Device to Failed State" },
4432       { 0x002B, "P Failed because of Selection Timeout" },
4433       { 0x002C, "P Failed because of SCSI Bus Phase Error" },
4434       { 0x002D, "P Failed because Device Returned Unknown Status" },
4435       { 0x002E, "P Failed because Device Not Ready" },
4436       { 0x002F, "P Failed because Device Not Found at Startup" },
4437       { 0x0030, "P Failed because COD Write Operation Failed" },
4438       { 0x0031, "P Failed because BDT Write Operation Failed" },
4439       { 0x0039, "P Missing at Startup" },
4440       { 0x003A, "P Start Rebuild Failed due to Physical Drive Too Small" },
4441       { 0x003C, "P Temporarily Offline Device Automatically Made Online" },
4442       { 0x003D, "P Standby Rebuild Started" },
4443       /* Logical Device Events (0x0080 - 0x00FF) */
4444       { 0x0080, "M Consistency Check Started" },
4445       { 0x0081, "M Consistency Check Completed" },
4446       { 0x0082, "M Consistency Check Cancelled" },
4447       { 0x0083, "M Consistency Check Completed With Errors" },
4448       { 0x0084, "M Consistency Check Failed due to Logical Drive Failure" },
4449       { 0x0085, "M Consistency Check Failed due to Physical Device Failure" },
4450       { 0x0086, "L Offline" },
4451       { 0x0087, "L Critical" },
4452       { 0x0088, "L Online" },
4453       { 0x0089, "M Automatic Rebuild Started" },
4454       { 0x008A, "M Manual Rebuild Started" },
4455       { 0x008B, "M Rebuild Completed" },
4456       { 0x008C, "M Rebuild Cancelled" },
4457       { 0x008D, "M Rebuild Failed for Unknown Reasons" },
4458       { 0x008E, "M Rebuild Failed due to New Physical Device" },
4459       { 0x008F, "M Rebuild Failed due to Logical Drive Failure" },
4460       { 0x0090, "M Initialization Started" },
4461       { 0x0091, "M Initialization Completed" },
4462       { 0x0092, "M Initialization Cancelled" },
4463       { 0x0093, "M Initialization Failed" },
4464       { 0x0094, "L Found" },
4465       { 0x0095, "L Deleted" },
4466       { 0x0096, "M Expand Capacity Started" },
4467       { 0x0097, "M Expand Capacity Completed" },
4468       { 0x0098, "M Expand Capacity Failed" },
4469       { 0x0099, "L Bad Block Found" },
4470       { 0x009A, "L Size Changed" },
4471       { 0x009B, "L Type Changed" },
4472       { 0x009C, "L Bad Data Block Found" },
4473       { 0x009E, "L Read of Data Block in BDT" },
4474       { 0x009F, "L Write Back Data for Disk Block Lost" },
4475       { 0x00A0, "L Temporarily Offline RAID-5/3 Drive Made Online" },
4476       { 0x00A1, "L Temporarily Offline RAID-6/1/0/7 Drive Made Online" },
4477       { 0x00A2, "L Standby Rebuild Started" },
4478       /* Fault Management Events (0x0100 - 0x017F) */
4479       { 0x0140, "E Fan %d Failed" },
4480       { 0x0141, "E Fan %d OK" },
4481       { 0x0142, "E Fan %d Not Present" },
4482       { 0x0143, "E Power Supply %d Failed" },
4483       { 0x0144, "E Power Supply %d OK" },
4484       { 0x0145, "E Power Supply %d Not Present" },
4485       { 0x0146, "E Temperature Sensor %d Temperature Exceeds Safe Limit" },
4486       { 0x0147, "E Temperature Sensor %d Temperature Exceeds Working Limit" },
4487       { 0x0148, "E Temperature Sensor %d Temperature Normal" },
4488       { 0x0149, "E Temperature Sensor %d Not Present" },
4489       { 0x014A, "E Enclosure Management Unit %d Access Critical" },
4490       { 0x014B, "E Enclosure Management Unit %d Access OK" },
4491       { 0x014C, "E Enclosure Management Unit %d Access Offline" },
4492       /* Controller Events (0x0180 - 0x01FF) */
4493       { 0x0181, "C Cache Write Back Error" },
4494       { 0x0188, "C Battery Backup Unit Found" },
4495       { 0x0189, "C Battery Backup Unit Charge Level Low" },
4496       { 0x018A, "C Battery Backup Unit Charge Level OK" },
4497       { 0x0193, "C Installation Aborted" },
4498       { 0x0195, "C Battery Backup Unit Physically Removed" },
4499       { 0x0196, "C Memory Error During Warm Boot" },
4500       { 0x019E, "C Memory Soft ECC Error Corrected" },
4501       { 0x019F, "C Memory Hard ECC Error Corrected" },
4502       { 0x01A2, "C Battery Backup Unit Failed" },
4503       { 0x01AB, "C Mirror Race Recovery Failed" },
4504       { 0x01AC, "C Mirror Race on Critical Drive" },
4505       /* Controller Internal Processor Events */
4506       { 0x0380, "C Internal Controller Hung" },
4507       { 0x0381, "C Internal Controller Firmware Breakpoint" },
4508       { 0x0390, "C Internal Controller i960 Processor Specific Error" },
4509       { 0x03A0, "C Internal Controller StrongARM Processor Specific Error" },
4510       { 0, "" } };
4511   int EventListIndex = 0, EventCode;
4512   unsigned char EventType, *EventMessage;
4513   if (Event->EventCode == 0x1C &&
4514       RequestSense->SenseKey == DAC960_SenseKey_VendorSpecific &&
4515       (RequestSense->AdditionalSenseCode == 0x80 ||
4516        RequestSense->AdditionalSenseCode == 0x81))
4517     Event->EventCode = ((RequestSense->AdditionalSenseCode - 0x80) << 8) |
4518                        RequestSense->AdditionalSenseCodeQualifier;
4519   while (true)
4520     {
4521       EventCode = EventList[EventListIndex].EventCode;
4522       if (EventCode == Event->EventCode || EventCode == 0) break;
4523       EventListIndex++;
4524     }
4525   EventType = EventList[EventListIndex].EventMessage[0];
4526   EventMessage = &EventList[EventListIndex].EventMessage[2];
4527   if (EventCode == 0)
4528     {
4529       DAC960_Critical("Unknown Controller Event Code %04X\n",
4530                       Controller, Event->EventCode);
4531       return;
4532     }
4533   switch (EventType)
4534     {
4535     case 'P':
4536       DAC960_Critical("Physical Device %d:%d %s\n", Controller,
4537                       Event->Channel, Event->TargetID, EventMessage);
4538       break;
4539     case 'L':
4540       DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
4541                       Event->LogicalUnit, Controller->ControllerNumber,
4542                       Event->LogicalUnit, EventMessage);
4543       break;
4544     case 'M':
4545       DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
4546                       Event->LogicalUnit, Controller->ControllerNumber,
4547                       Event->LogicalUnit, EventMessage);
4548       break;
4549     case 'S':
4550       if (RequestSense->SenseKey == DAC960_SenseKey_NoSense ||
4551           (RequestSense->SenseKey == DAC960_SenseKey_NotReady &&
4552            RequestSense->AdditionalSenseCode == 0x04 &&
4553            (RequestSense->AdditionalSenseCodeQualifier == 0x01 ||
4554             RequestSense->AdditionalSenseCodeQualifier == 0x02)))
4555         break;
4556       DAC960_Critical("Physical Device %d:%d %s\n", Controller,
4557                       Event->Channel, Event->TargetID, EventMessage);
4558       DAC960_Critical("Physical Device %d:%d Request Sense: "
4559                       "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
4560                       Controller,
4561                       Event->Channel,
4562                       Event->TargetID,
4563                       RequestSense->SenseKey,
4564                       RequestSense->AdditionalSenseCode,
4565                       RequestSense->AdditionalSenseCodeQualifier);
4566       DAC960_Critical("Physical Device %d:%d Request Sense: "
4567                       "Information = %02X%02X%02X%02X "
4568                       "%02X%02X%02X%02X\n",
4569                       Controller,
4570                       Event->Channel,
4571                       Event->TargetID,
4572                       RequestSense->Information[0],
4573                       RequestSense->Information[1],
4574                       RequestSense->Information[2],
4575                       RequestSense->Information[3],
4576                       RequestSense->CommandSpecificInformation[0],
4577                       RequestSense->CommandSpecificInformation[1],
4578                       RequestSense->CommandSpecificInformation[2],
4579                       RequestSense->CommandSpecificInformation[3]);
4580       break;
4581     case 'E':
4582       if (Controller->SuppressEnclosureMessages) break;
4583       sprintf(MessageBuffer, EventMessage, Event->LogicalUnit);
4584       DAC960_Critical("Enclosure %d %s\n", Controller,
4585                       Event->TargetID, MessageBuffer);
4586       break;
4587     case 'C':
4588       DAC960_Critical("Controller %s\n", Controller, EventMessage);
4589       break;
4590     default:
4591       DAC960_Critical("Unknown Controller Event Code %04X\n",
4592                       Controller, Event->EventCode);
4593       break;
4594     }
4595 }
4596
4597
4598 /*
4599   DAC960_V2_ReportProgress prints an appropriate progress message for
4600   Logical Device Long Operations.
4601 */
4602
4603 static void DAC960_V2_ReportProgress(DAC960_Controller_T *Controller,
4604                                      unsigned char *MessageString,
4605                                      unsigned int LogicalDeviceNumber,
4606                                      unsigned long BlocksCompleted,
4607                                      unsigned long LogicalDeviceSize)
4608 {
4609   Controller->EphemeralProgressMessage = true;
4610   DAC960_Progress("%s in Progress: Logical Drive %d (/dev/rd/c%dd%d) "
4611                   "%d%% completed\n", Controller,
4612                   MessageString,
4613                   LogicalDeviceNumber,
4614                   Controller->ControllerNumber,
4615                   LogicalDeviceNumber,
4616                   (100 * (BlocksCompleted >> 7)) / (LogicalDeviceSize >> 7));
4617   Controller->EphemeralProgressMessage = false;
4618 }
4619
4620
4621 /*
4622   DAC960_V2_ProcessCompletedCommand performs completion processing for Command
4623   for DAC960 V2 Firmware Controllers.
4624 */
4625
4626 static void DAC960_V2_ProcessCompletedCommand(DAC960_Command_T *Command)
4627 {
4628   DAC960_Controller_T *Controller = Command->Controller;
4629   DAC960_CommandType_T CommandType = Command->CommandType;
4630   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
4631   DAC960_V2_IOCTL_Opcode_T CommandOpcode = CommandMailbox->Common.IOCTL_Opcode;
4632   DAC960_V2_CommandStatus_T CommandStatus = Command->V2.CommandStatus;
4633
4634   if (CommandType == DAC960_ReadCommand ||
4635       CommandType == DAC960_WriteCommand)
4636     {
4637
4638 #ifdef FORCE_RETRY_DEBUG
4639       CommandStatus = DAC960_V2_AbormalCompletion;
4640 #endif
4641       Command->V2.RequestSense->SenseKey = DAC960_SenseKey_MediumError;
4642
4643       if (CommandStatus == DAC960_V2_NormalCompletion) {
4644
4645                 if (!DAC960_ProcessCompletedRequest(Command, true))
4646                         BUG();
4647
4648       } else if (Command->V2.RequestSense->SenseKey == DAC960_SenseKey_MediumError)
4649         {
4650           /*
4651            * break the command down into pieces and resubmit each
4652            * piece, hoping that some of them will succeed.
4653            */
4654            DAC960_queue_partial_rw(Command);
4655            return;
4656         }
4657       else
4658         {
4659           if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
4660             DAC960_V2_ReadWriteError(Command);
4661           /*
4662             Perform completion processing for all buffers in this I/O Request.
4663           */
4664           (void)DAC960_ProcessCompletedRequest(Command, false);
4665         }
4666     }
4667   else if (CommandType == DAC960_ReadRetryCommand ||
4668            CommandType == DAC960_WriteRetryCommand)
4669     {
4670       bool normal_completion;
4671
4672 #ifdef FORCE_RETRY_FAILURE_DEBUG
4673       static int retry_count = 1;
4674 #endif
4675       /*
4676         Perform completion processing for the portion that was
4677         retried, and submit the next portion, if any.
4678       */
4679       normal_completion = true;
4680       if (CommandStatus != DAC960_V2_NormalCompletion) {
4681         normal_completion = false;
4682         if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
4683             DAC960_V2_ReadWriteError(Command);
4684       }
4685
4686 #ifdef FORCE_RETRY_FAILURE_DEBUG
4687       if (!(++retry_count % 10000)) {
4688               printk("V2 error retry failure test\n");
4689               normal_completion = false;
4690               DAC960_V2_ReadWriteError(Command);
4691       }
4692 #endif
4693
4694       if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
4695                 DAC960_queue_partial_rw(Command);
4696                 return;
4697       }
4698     }
4699   else if (CommandType == DAC960_MonitoringCommand)
4700     {
4701       if (Controller->ShutdownMonitoringTimer)
4702               return;
4703       if (CommandOpcode == DAC960_V2_GetControllerInfo)
4704         {
4705           DAC960_V2_ControllerInfo_T *NewControllerInfo =
4706             Controller->V2.NewControllerInformation;
4707           DAC960_V2_ControllerInfo_T *ControllerInfo =
4708             &Controller->V2.ControllerInformation;
4709           Controller->LogicalDriveCount =
4710             NewControllerInfo->LogicalDevicesPresent;
4711           Controller->V2.NeedLogicalDeviceInformation = true;
4712           Controller->V2.NeedPhysicalDeviceInformation = true;
4713           Controller->V2.StartLogicalDeviceInformationScan = true;
4714           Controller->V2.StartPhysicalDeviceInformationScan = true;
4715           Controller->MonitoringAlertMode =
4716             (NewControllerInfo->LogicalDevicesCritical > 0 ||
4717              NewControllerInfo->LogicalDevicesOffline > 0 ||
4718              NewControllerInfo->PhysicalDisksCritical > 0 ||
4719              NewControllerInfo->PhysicalDisksOffline > 0);
4720           memcpy(ControllerInfo, NewControllerInfo,
4721                  sizeof(DAC960_V2_ControllerInfo_T));
4722         }
4723       else if (CommandOpcode == DAC960_V2_GetEvent)
4724         {
4725           if (CommandStatus == DAC960_V2_NormalCompletion) {
4726             DAC960_V2_ReportEvent(Controller, Controller->V2.Event);
4727           }
4728           Controller->V2.NextEventSequenceNumber++;
4729         }
4730       else if (CommandOpcode == DAC960_V2_GetPhysicalDeviceInfoValid &&
4731                CommandStatus == DAC960_V2_NormalCompletion)
4732         {
4733           DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
4734             Controller->V2.NewPhysicalDeviceInformation;
4735           unsigned int PhysicalDeviceIndex = Controller->V2.PhysicalDeviceIndex;
4736           DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
4737             Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
4738           DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4739             Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
4740           unsigned int DeviceIndex;
4741           while (PhysicalDeviceInfo != NULL &&
4742                  (NewPhysicalDeviceInfo->Channel >
4743                   PhysicalDeviceInfo->Channel ||
4744                   (NewPhysicalDeviceInfo->Channel ==
4745                    PhysicalDeviceInfo->Channel &&
4746                    (NewPhysicalDeviceInfo->TargetID >
4747                     PhysicalDeviceInfo->TargetID ||
4748                    (NewPhysicalDeviceInfo->TargetID ==
4749                     PhysicalDeviceInfo->TargetID &&
4750                     NewPhysicalDeviceInfo->LogicalUnit >
4751                     PhysicalDeviceInfo->LogicalUnit)))))
4752             {
4753               DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
4754                               Controller,
4755                               PhysicalDeviceInfo->Channel,
4756                               PhysicalDeviceInfo->TargetID);
4757               Controller->V2.PhysicalDeviceInformation
4758                              [PhysicalDeviceIndex] = NULL;
4759               Controller->V2.InquiryUnitSerialNumber
4760                              [PhysicalDeviceIndex] = NULL;
4761               kfree(PhysicalDeviceInfo);
4762               kfree(InquiryUnitSerialNumber);
4763               for (DeviceIndex = PhysicalDeviceIndex;
4764                    DeviceIndex < DAC960_V2_MaxPhysicalDevices - 1;
4765                    DeviceIndex++)
4766                 {
4767                   Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
4768                     Controller->V2.PhysicalDeviceInformation[DeviceIndex+1];
4769                   Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
4770                     Controller->V2.InquiryUnitSerialNumber[DeviceIndex+1];
4771                 }
4772               Controller->V2.PhysicalDeviceInformation
4773                              [DAC960_V2_MaxPhysicalDevices-1] = NULL;
4774               Controller->V2.InquiryUnitSerialNumber
4775                              [DAC960_V2_MaxPhysicalDevices-1] = NULL;
4776               PhysicalDeviceInfo =
4777                 Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
4778               InquiryUnitSerialNumber =
4779                 Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
4780             }
4781           if (PhysicalDeviceInfo == NULL ||
4782               (NewPhysicalDeviceInfo->Channel !=
4783                PhysicalDeviceInfo->Channel) ||
4784               (NewPhysicalDeviceInfo->TargetID !=
4785                PhysicalDeviceInfo->TargetID) ||
4786               (NewPhysicalDeviceInfo->LogicalUnit !=
4787                PhysicalDeviceInfo->LogicalUnit))
4788             {
4789               PhysicalDeviceInfo =
4790                 kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T), GFP_ATOMIC);
4791               InquiryUnitSerialNumber =
4792                   kmalloc(sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
4793                           GFP_ATOMIC);
4794               if (InquiryUnitSerialNumber == NULL ||
4795                   PhysicalDeviceInfo == NULL)
4796                 {
4797                   kfree(InquiryUnitSerialNumber);
4798                   InquiryUnitSerialNumber = NULL;
4799                   kfree(PhysicalDeviceInfo);
4800                   PhysicalDeviceInfo = NULL;
4801                 }
4802               DAC960_Critical("Physical Device %d:%d Now Exists%s\n",
4803                               Controller,
4804                               NewPhysicalDeviceInfo->Channel,
4805                               NewPhysicalDeviceInfo->TargetID,
4806                               (PhysicalDeviceInfo != NULL
4807                                ? "" : " - Allocation Failed"));
4808               if (PhysicalDeviceInfo != NULL)
4809                 {
4810                   memset(PhysicalDeviceInfo, 0,
4811                          sizeof(DAC960_V2_PhysicalDeviceInfo_T));
4812                   PhysicalDeviceInfo->PhysicalDeviceState =
4813                     DAC960_V2_Device_InvalidState;
4814                   memset(InquiryUnitSerialNumber, 0,
4815                          sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4816                   InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
4817                   for (DeviceIndex = DAC960_V2_MaxPhysicalDevices - 1;
4818                        DeviceIndex > PhysicalDeviceIndex;
4819                        DeviceIndex--)
4820                     {
4821                       Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
4822                         Controller->V2.PhysicalDeviceInformation[DeviceIndex-1];
4823                       Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
4824                         Controller->V2.InquiryUnitSerialNumber[DeviceIndex-1];
4825                     }
4826                   Controller->V2.PhysicalDeviceInformation
4827                                  [PhysicalDeviceIndex] =
4828                     PhysicalDeviceInfo;
4829                   Controller->V2.InquiryUnitSerialNumber
4830                                  [PhysicalDeviceIndex] =
4831                     InquiryUnitSerialNumber;
4832                   Controller->V2.NeedDeviceSerialNumberInformation = true;
4833                 }
4834             }
4835           if (PhysicalDeviceInfo != NULL)
4836             {
4837               if (NewPhysicalDeviceInfo->PhysicalDeviceState !=
4838                   PhysicalDeviceInfo->PhysicalDeviceState)
4839                 DAC960_Critical(
4840                   "Physical Device %d:%d is now %s\n", Controller,
4841                   NewPhysicalDeviceInfo->Channel,
4842                   NewPhysicalDeviceInfo->TargetID,
4843                   (NewPhysicalDeviceInfo->PhysicalDeviceState
4844                    == DAC960_V2_Device_Online
4845                    ? "ONLINE"
4846                    : NewPhysicalDeviceInfo->PhysicalDeviceState
4847                      == DAC960_V2_Device_Rebuild
4848                      ? "REBUILD"
4849                      : NewPhysicalDeviceInfo->PhysicalDeviceState
4850                        == DAC960_V2_Device_Missing
4851                        ? "MISSING"
4852                        : NewPhysicalDeviceInfo->PhysicalDeviceState
4853                          == DAC960_V2_Device_Critical
4854                          ? "CRITICAL"
4855                          : NewPhysicalDeviceInfo->PhysicalDeviceState
4856                            == DAC960_V2_Device_Dead
4857                            ? "DEAD"
4858                            : NewPhysicalDeviceInfo->PhysicalDeviceState
4859                              == DAC960_V2_Device_SuspectedDead
4860                              ? "SUSPECTED-DEAD"
4861                              : NewPhysicalDeviceInfo->PhysicalDeviceState
4862                                == DAC960_V2_Device_CommandedOffline
4863                                ? "COMMANDED-OFFLINE"
4864                                : NewPhysicalDeviceInfo->PhysicalDeviceState
4865                                  == DAC960_V2_Device_Standby
4866                                  ? "STANDBY" : "UNKNOWN"));
4867               if ((NewPhysicalDeviceInfo->ParityErrors !=
4868                    PhysicalDeviceInfo->ParityErrors) ||
4869                   (NewPhysicalDeviceInfo->SoftErrors !=
4870                    PhysicalDeviceInfo->SoftErrors) ||
4871                   (NewPhysicalDeviceInfo->HardErrors !=
4872                    PhysicalDeviceInfo->HardErrors) ||
4873                   (NewPhysicalDeviceInfo->MiscellaneousErrors !=
4874                    PhysicalDeviceInfo->MiscellaneousErrors) ||
4875                   (NewPhysicalDeviceInfo->CommandTimeouts !=
4876                    PhysicalDeviceInfo->CommandTimeouts) ||
4877                   (NewPhysicalDeviceInfo->Retries !=
4878                    PhysicalDeviceInfo->Retries) ||
4879                   (NewPhysicalDeviceInfo->Aborts !=
4880                    PhysicalDeviceInfo->Aborts) ||
4881                   (NewPhysicalDeviceInfo->PredictedFailuresDetected !=
4882                    PhysicalDeviceInfo->PredictedFailuresDetected))
4883                 {
4884                   DAC960_Critical("Physical Device %d:%d Errors: "
4885                                   "Parity = %d, Soft = %d, "
4886                                   "Hard = %d, Misc = %d\n",
4887                                   Controller,
4888                                   NewPhysicalDeviceInfo->Channel,
4889                                   NewPhysicalDeviceInfo->TargetID,
4890                                   NewPhysicalDeviceInfo->ParityErrors,
4891                                   NewPhysicalDeviceInfo->SoftErrors,
4892                                   NewPhysicalDeviceInfo->HardErrors,
4893                                   NewPhysicalDeviceInfo->MiscellaneousErrors);
4894                   DAC960_Critical("Physical Device %d:%d Errors: "
4895                                   "Timeouts = %d, Retries = %d, "
4896                                   "Aborts = %d, Predicted = %d\n",
4897                                   Controller,
4898                                   NewPhysicalDeviceInfo->Channel,
4899                                   NewPhysicalDeviceInfo->TargetID,
4900                                   NewPhysicalDeviceInfo->CommandTimeouts,
4901                                   NewPhysicalDeviceInfo->Retries,
4902                                   NewPhysicalDeviceInfo->Aborts,
4903                                   NewPhysicalDeviceInfo
4904                                   ->PredictedFailuresDetected);
4905                 }
4906               if ((PhysicalDeviceInfo->PhysicalDeviceState
4907                    == DAC960_V2_Device_Dead ||
4908                    PhysicalDeviceInfo->PhysicalDeviceState
4909                    == DAC960_V2_Device_InvalidState) &&
4910                   NewPhysicalDeviceInfo->PhysicalDeviceState
4911                   != DAC960_V2_Device_Dead)
4912                 Controller->V2.NeedDeviceSerialNumberInformation = true;
4913               memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
4914                      sizeof(DAC960_V2_PhysicalDeviceInfo_T));
4915             }
4916           NewPhysicalDeviceInfo->LogicalUnit++;
4917           Controller->V2.PhysicalDeviceIndex++;
4918         }
4919       else if (CommandOpcode == DAC960_V2_GetPhysicalDeviceInfoValid)
4920         {
4921           unsigned int DeviceIndex;
4922           for (DeviceIndex = Controller->V2.PhysicalDeviceIndex;
4923                DeviceIndex < DAC960_V2_MaxPhysicalDevices;
4924                DeviceIndex++)
4925             {
4926               DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
4927                 Controller->V2.PhysicalDeviceInformation[DeviceIndex];
4928               DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4929                 Controller->V2.InquiryUnitSerialNumber[DeviceIndex];
4930               if (PhysicalDeviceInfo == NULL) break;
4931               DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
4932                               Controller,
4933                               PhysicalDeviceInfo->Channel,
4934                               PhysicalDeviceInfo->TargetID);
4935               Controller->V2.PhysicalDeviceInformation[DeviceIndex] = NULL;
4936               Controller->V2.InquiryUnitSerialNumber[DeviceIndex] = NULL;
4937               kfree(PhysicalDeviceInfo);
4938               kfree(InquiryUnitSerialNumber);
4939             }
4940           Controller->V2.NeedPhysicalDeviceInformation = false;
4941         }
4942       else if (CommandOpcode == DAC960_V2_GetLogicalDeviceInfoValid &&
4943                CommandStatus == DAC960_V2_NormalCompletion)
4944         {
4945           DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
4946             Controller->V2.NewLogicalDeviceInformation;
4947           unsigned short LogicalDeviceNumber =
4948             NewLogicalDeviceInfo->LogicalDeviceNumber;
4949           DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
4950             Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber];
4951           if (LogicalDeviceInfo == NULL)
4952             {
4953               DAC960_V2_PhysicalDevice_T PhysicalDevice;
4954               PhysicalDevice.Controller = 0;
4955               PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
4956               PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
4957               PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
4958               Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
4959                 PhysicalDevice;
4960               LogicalDeviceInfo = kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T),
4961                                           GFP_ATOMIC);
4962               Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
4963                 LogicalDeviceInfo;
4964               DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
4965                               "Now Exists%s\n", Controller,
4966                               LogicalDeviceNumber,
4967                               Controller->ControllerNumber,
4968                               LogicalDeviceNumber,
4969                               (LogicalDeviceInfo != NULL
4970                                ? "" : " - Allocation Failed"));
4971               if (LogicalDeviceInfo != NULL)
4972                 {
4973                   memset(LogicalDeviceInfo, 0,
4974                          sizeof(DAC960_V2_LogicalDeviceInfo_T));
4975                   DAC960_ComputeGenericDiskInfo(Controller);
4976                 }
4977             }
4978           if (LogicalDeviceInfo != NULL)
4979             {
4980               unsigned long LogicalDeviceSize =
4981                 NewLogicalDeviceInfo->ConfigurableDeviceSize;
4982               if (NewLogicalDeviceInfo->LogicalDeviceState !=
4983                   LogicalDeviceInfo->LogicalDeviceState)
4984                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
4985                                 "is now %s\n", Controller,
4986                                 LogicalDeviceNumber,
4987                                 Controller->ControllerNumber,
4988                                 LogicalDeviceNumber,
4989                                 (NewLogicalDeviceInfo->LogicalDeviceState
4990                                  == DAC960_V2_LogicalDevice_Online
4991                                  ? "ONLINE"
4992                                  : NewLogicalDeviceInfo->LogicalDeviceState
4993                                    == DAC960_V2_LogicalDevice_Critical
4994                                    ? "CRITICAL" : "OFFLINE"));
4995               if ((NewLogicalDeviceInfo->SoftErrors !=
4996                    LogicalDeviceInfo->SoftErrors) ||
4997                   (NewLogicalDeviceInfo->CommandsFailed !=
4998                    LogicalDeviceInfo->CommandsFailed) ||
4999                   (NewLogicalDeviceInfo->DeferredWriteErrors !=
5000                    LogicalDeviceInfo->DeferredWriteErrors))
5001                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) Errors: "
5002                                 "Soft = %d, Failed = %d, Deferred Write = %d\n",
5003                                 Controller, LogicalDeviceNumber,
5004                                 Controller->ControllerNumber,
5005                                 LogicalDeviceNumber,
5006                                 NewLogicalDeviceInfo->SoftErrors,
5007                                 NewLogicalDeviceInfo->CommandsFailed,
5008                                 NewLogicalDeviceInfo->DeferredWriteErrors);
5009               if (NewLogicalDeviceInfo->ConsistencyCheckInProgress)
5010                 DAC960_V2_ReportProgress(Controller,
5011                                          "Consistency Check",
5012                                          LogicalDeviceNumber,
5013                                          NewLogicalDeviceInfo
5014                                          ->ConsistencyCheckBlockNumber,
5015                                          LogicalDeviceSize);
5016               else if (NewLogicalDeviceInfo->RebuildInProgress)
5017                 DAC960_V2_ReportProgress(Controller,
5018                                          "Rebuild",
5019                                          LogicalDeviceNumber,
5020                                          NewLogicalDeviceInfo
5021                                          ->RebuildBlockNumber,
5022                                          LogicalDeviceSize);
5023               else if (NewLogicalDeviceInfo->BackgroundInitializationInProgress)
5024                 DAC960_V2_ReportProgress(Controller,
5025                                          "Background Initialization",
5026                                          LogicalDeviceNumber,
5027                                          NewLogicalDeviceInfo
5028                                          ->BackgroundInitializationBlockNumber,
5029                                          LogicalDeviceSize);
5030               else if (NewLogicalDeviceInfo->ForegroundInitializationInProgress)
5031                 DAC960_V2_ReportProgress(Controller,
5032                                          "Foreground Initialization",
5033                                          LogicalDeviceNumber,
5034                                          NewLogicalDeviceInfo
5035                                          ->ForegroundInitializationBlockNumber,
5036                                          LogicalDeviceSize);
5037               else if (NewLogicalDeviceInfo->DataMigrationInProgress)
5038                 DAC960_V2_ReportProgress(Controller,
5039                                          "Data Migration",
5040                                          LogicalDeviceNumber,
5041                                          NewLogicalDeviceInfo
5042                                          ->DataMigrationBlockNumber,
5043                                          LogicalDeviceSize);
5044               else if (NewLogicalDeviceInfo->PatrolOperationInProgress)
5045                 DAC960_V2_ReportProgress(Controller,
5046                                          "Patrol Operation",
5047                                          LogicalDeviceNumber,
5048                                          NewLogicalDeviceInfo
5049                                          ->PatrolOperationBlockNumber,
5050                                          LogicalDeviceSize);
5051               if (LogicalDeviceInfo->BackgroundInitializationInProgress &&
5052                   !NewLogicalDeviceInfo->BackgroundInitializationInProgress)
5053                 DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) "
5054                                 "Background Initialization %s\n",
5055                                 Controller,
5056                                 LogicalDeviceNumber,
5057                                 Controller->ControllerNumber,
5058                                 LogicalDeviceNumber,
5059                                 (NewLogicalDeviceInfo->LogicalDeviceControl
5060                                                       .LogicalDeviceInitialized
5061                                  ? "Completed" : "Failed"));
5062               memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
5063                      sizeof(DAC960_V2_LogicalDeviceInfo_T));
5064             }
5065           Controller->V2.LogicalDriveFoundDuringScan
5066                          [LogicalDeviceNumber] = true;
5067           NewLogicalDeviceInfo->LogicalDeviceNumber++;
5068         }
5069       else if (CommandOpcode == DAC960_V2_GetLogicalDeviceInfoValid)
5070         {
5071           int LogicalDriveNumber;
5072           for (LogicalDriveNumber = 0;
5073                LogicalDriveNumber < DAC960_MaxLogicalDrives;
5074                LogicalDriveNumber++)
5075             {
5076               DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
5077                 Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
5078               if (LogicalDeviceInfo == NULL ||
5079                   Controller->V2.LogicalDriveFoundDuringScan
5080                                  [LogicalDriveNumber])
5081                 continue;
5082               DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
5083                               "No Longer Exists\n", Controller,
5084                               LogicalDriveNumber,
5085                               Controller->ControllerNumber,
5086                               LogicalDriveNumber);
5087               Controller->V2.LogicalDeviceInformation
5088                              [LogicalDriveNumber] = NULL;
5089               kfree(LogicalDeviceInfo);
5090               Controller->LogicalDriveInitiallyAccessible
5091                           [LogicalDriveNumber] = false;
5092               DAC960_ComputeGenericDiskInfo(Controller);
5093             }
5094           Controller->V2.NeedLogicalDeviceInformation = false;
5095         }
5096       else if (CommandOpcode == DAC960_V2_SCSI_10_Passthru)
5097         {
5098             DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
5099                 Controller->V2.InquiryUnitSerialNumber[Controller->V2.PhysicalDeviceIndex - 1];
5100
5101             if (CommandStatus != DAC960_V2_NormalCompletion) {
5102                 memset(InquiryUnitSerialNumber,
5103                         0, sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
5104                 InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
5105             } else
5106                 memcpy(InquiryUnitSerialNumber,
5107                         Controller->V2.NewInquiryUnitSerialNumber,
5108                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
5109
5110              Controller->V2.NeedDeviceSerialNumberInformation = false;
5111         }
5112
5113       if (Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
5114           - Controller->V2.NextEventSequenceNumber > 0)
5115         {
5116           CommandMailbox->GetEvent.CommandOpcode = DAC960_V2_IOCTL;
5117           CommandMailbox->GetEvent.DataTransferSize = sizeof(DAC960_V2_Event_T);
5118           CommandMailbox->GetEvent.EventSequenceNumberHigh16 =
5119             Controller->V2.NextEventSequenceNumber >> 16;
5120           CommandMailbox->GetEvent.ControllerNumber = 0;
5121           CommandMailbox->GetEvent.IOCTL_Opcode =
5122             DAC960_V2_GetEvent;
5123           CommandMailbox->GetEvent.EventSequenceNumberLow16 =
5124             Controller->V2.NextEventSequenceNumber & 0xFFFF;
5125           CommandMailbox->GetEvent.DataTransferMemoryAddress
5126                                   .ScatterGatherSegments[0]
5127                                   .SegmentDataPointer =
5128             Controller->V2.EventDMA;
5129           CommandMailbox->GetEvent.DataTransferMemoryAddress
5130                                   .ScatterGatherSegments[0]
5131                                   .SegmentByteCount =
5132             CommandMailbox->GetEvent.DataTransferSize;
5133           DAC960_QueueCommand(Command);
5134           return;
5135         }
5136       if (Controller->V2.NeedPhysicalDeviceInformation)
5137         {
5138           if (Controller->V2.NeedDeviceSerialNumberInformation)
5139             {
5140               DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
5141                 Controller->V2.NewInquiryUnitSerialNumber;
5142               InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
5143
5144               DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
5145                         Controller->V2.NewPhysicalDeviceInformation->Channel,
5146                         Controller->V2.NewPhysicalDeviceInformation->TargetID,
5147                 Controller->V2.NewPhysicalDeviceInformation->LogicalUnit - 1);
5148
5149
5150               DAC960_QueueCommand(Command);
5151               return;
5152             }
5153           if (Controller->V2.StartPhysicalDeviceInformationScan)
5154             {
5155               Controller->V2.PhysicalDeviceIndex = 0;
5156               Controller->V2.NewPhysicalDeviceInformation->Channel = 0;
5157               Controller->V2.NewPhysicalDeviceInformation->TargetID = 0;
5158               Controller->V2.NewPhysicalDeviceInformation->LogicalUnit = 0;
5159               Controller->V2.StartPhysicalDeviceInformationScan = false;
5160             }
5161           CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
5162           CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
5163             sizeof(DAC960_V2_PhysicalDeviceInfo_T);
5164           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit =
5165             Controller->V2.NewPhysicalDeviceInformation->LogicalUnit;
5166           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID =
5167             Controller->V2.NewPhysicalDeviceInformation->TargetID;
5168           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel =
5169             Controller->V2.NewPhysicalDeviceInformation->Channel;
5170           CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
5171             DAC960_V2_GetPhysicalDeviceInfoValid;
5172           CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
5173                                             .ScatterGatherSegments[0]
5174                                             .SegmentDataPointer =
5175             Controller->V2.NewPhysicalDeviceInformationDMA;
5176           CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
5177                                             .ScatterGatherSegments[0]
5178                                             .SegmentByteCount =
5179             CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
5180           DAC960_QueueCommand(Command);
5181           return;
5182         }
5183       if (Controller->V2.NeedLogicalDeviceInformation)
5184         {
5185           if (Controller->V2.StartLogicalDeviceInformationScan)
5186             {
5187               int LogicalDriveNumber;
5188               for (LogicalDriveNumber = 0;
5189                    LogicalDriveNumber < DAC960_MaxLogicalDrives;
5190                    LogicalDriveNumber++)
5191                 Controller->V2.LogicalDriveFoundDuringScan
5192                                [LogicalDriveNumber] = false;
5193               Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber = 0;
5194               Controller->V2.StartLogicalDeviceInformationScan = false;
5195             }
5196           CommandMailbox->LogicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
5197           CommandMailbox->LogicalDeviceInfo.DataTransferSize =
5198             sizeof(DAC960_V2_LogicalDeviceInfo_T);
5199           CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
5200             Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber;
5201           CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
5202             DAC960_V2_GetLogicalDeviceInfoValid;
5203           CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
5204                                            .ScatterGatherSegments[0]
5205                                            .SegmentDataPointer =
5206             Controller->V2.NewLogicalDeviceInformationDMA;
5207           CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
5208                                            .ScatterGatherSegments[0]
5209                                            .SegmentByteCount =
5210             CommandMailbox->LogicalDeviceInfo.DataTransferSize;
5211           DAC960_QueueCommand(Command);
5212           return;
5213         }
5214       Controller->MonitoringTimerCount++;
5215       Controller->MonitoringTimer.expires =
5216         jiffies + DAC960_HealthStatusMonitoringInterval;
5217         add_timer(&Controller->MonitoringTimer);
5218     }
5219   if (CommandType == DAC960_ImmediateCommand)
5220     {
5221       complete(Command->Completion);
5222       Command->Completion = NULL;
5223       return;
5224     }
5225   if (CommandType == DAC960_QueuedCommand)
5226     {
5227       DAC960_V2_KernelCommand_T *KernelCommand = Command->V2.KernelCommand;
5228       KernelCommand->CommandStatus = CommandStatus;
5229       KernelCommand->RequestSenseLength = Command->V2.RequestSenseLength;
5230       KernelCommand->DataTransferLength = Command->V2.DataTransferResidue;
5231       Command->V2.KernelCommand = NULL;
5232       DAC960_DeallocateCommand(Command);
5233       KernelCommand->CompletionFunction(KernelCommand);
5234       return;
5235     }
5236   /*
5237     Queue a Status Monitoring Command to the Controller using the just
5238     completed Command if one was deferred previously due to lack of a
5239     free Command when the Monitoring Timer Function was called.
5240   */
5241   if (Controller->MonitoringCommandDeferred)
5242     {
5243       Controller->MonitoringCommandDeferred = false;
5244       DAC960_V2_QueueMonitoringCommand(Command);
5245       return;
5246     }
5247   /*
5248     Deallocate the Command.
5249   */
5250   DAC960_DeallocateCommand(Command);
5251   /*
5252     Wake up any processes waiting on a free Command.
5253   */
5254   wake_up(&Controller->CommandWaitQueue);
5255 }
5256
5257 /*
5258   DAC960_GEM_InterruptHandler handles hardware interrupts from DAC960 GEM Series
5259   Controllers.
5260 */
5261
5262 static irqreturn_t DAC960_GEM_InterruptHandler(int IRQ_Channel,
5263                                        void *DeviceIdentifier)
5264 {
5265   DAC960_Controller_T *Controller = DeviceIdentifier;
5266   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5267   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5268   unsigned long flags;
5269
5270   spin_lock_irqsave(&Controller->queue_lock, flags);
5271   DAC960_GEM_AcknowledgeInterrupt(ControllerBaseAddress);
5272   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5273   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5274     {
5275        DAC960_V2_CommandIdentifier_T CommandIdentifier =
5276            NextStatusMailbox->Fields.CommandIdentifier;
5277        DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5278        Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5279        Command->V2.RequestSenseLength =
5280            NextStatusMailbox->Fields.RequestSenseLength;
5281        Command->V2.DataTransferResidue =
5282            NextStatusMailbox->Fields.DataTransferResidue;
5283        NextStatusMailbox->Words[0] = 0;
5284        if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5285            NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5286        DAC960_V2_ProcessCompletedCommand(Command);
5287     }
5288   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5289   /*
5290     Attempt to remove additional I/O Requests from the Controller's
5291     I/O Request Queue and queue them to the Controller.
5292   */
5293   DAC960_ProcessRequest(Controller);
5294   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5295   return IRQ_HANDLED;
5296 }
5297
5298 /*
5299   DAC960_BA_InterruptHandler handles hardware interrupts from DAC960 BA Series
5300   Controllers.
5301 */
5302
5303 static irqreturn_t DAC960_BA_InterruptHandler(int IRQ_Channel,
5304                                        void *DeviceIdentifier)
5305 {
5306   DAC960_Controller_T *Controller = DeviceIdentifier;
5307   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5308   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5309   unsigned long flags;
5310
5311   spin_lock_irqsave(&Controller->queue_lock, flags);
5312   DAC960_BA_AcknowledgeInterrupt(ControllerBaseAddress);
5313   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5314   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5315     {
5316       DAC960_V2_CommandIdentifier_T CommandIdentifier =
5317         NextStatusMailbox->Fields.CommandIdentifier;
5318       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5319       Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5320       Command->V2.RequestSenseLength =
5321         NextStatusMailbox->Fields.RequestSenseLength;
5322       Command->V2.DataTransferResidue =
5323         NextStatusMailbox->Fields.DataTransferResidue;
5324       NextStatusMailbox->Words[0] = 0;
5325       if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5326         NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5327       DAC960_V2_ProcessCompletedCommand(Command);
5328     }
5329   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5330   /*
5331     Attempt to remove additional I/O Requests from the Controller's
5332     I/O Request Queue and queue them to the Controller.
5333   */
5334   DAC960_ProcessRequest(Controller);
5335   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5336   return IRQ_HANDLED;
5337 }
5338
5339
5340 /*
5341   DAC960_LP_InterruptHandler handles hardware interrupts from DAC960 LP Series
5342   Controllers.
5343 */
5344
5345 static irqreturn_t DAC960_LP_InterruptHandler(int IRQ_Channel,
5346                                        void *DeviceIdentifier)
5347 {
5348   DAC960_Controller_T *Controller = DeviceIdentifier;
5349   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5350   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5351   unsigned long flags;
5352
5353   spin_lock_irqsave(&Controller->queue_lock, flags);
5354   DAC960_LP_AcknowledgeInterrupt(ControllerBaseAddress);
5355   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5356   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5357     {
5358       DAC960_V2_CommandIdentifier_T CommandIdentifier =
5359         NextStatusMailbox->Fields.CommandIdentifier;
5360       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5361       Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5362       Command->V2.RequestSenseLength =
5363         NextStatusMailbox->Fields.RequestSenseLength;
5364       Command->V2.DataTransferResidue =
5365         NextStatusMailbox->Fields.DataTransferResidue;
5366       NextStatusMailbox->Words[0] = 0;
5367       if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5368         NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5369       DAC960_V2_ProcessCompletedCommand(Command);
5370     }
5371   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5372   /*
5373     Attempt to remove additional I/O Requests from the Controller's
5374     I/O Request Queue and queue them to the Controller.
5375   */
5376   DAC960_ProcessRequest(Controller);
5377   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5378   return IRQ_HANDLED;
5379 }
5380
5381
5382 /*
5383   DAC960_LA_InterruptHandler handles hardware interrupts from DAC960 LA Series
5384   Controllers.
5385 */
5386
5387 static irqreturn_t DAC960_LA_InterruptHandler(int IRQ_Channel,
5388                                        void *DeviceIdentifier)
5389 {
5390   DAC960_Controller_T *Controller = DeviceIdentifier;
5391   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5392   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
5393   unsigned long flags;
5394
5395   spin_lock_irqsave(&Controller->queue_lock, flags);
5396   DAC960_LA_AcknowledgeInterrupt(ControllerBaseAddress);
5397   NextStatusMailbox = Controller->V1.NextStatusMailbox;
5398   while (NextStatusMailbox->Fields.Valid)
5399     {
5400       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5401         NextStatusMailbox->Fields.CommandIdentifier;
5402       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5403       Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5404       NextStatusMailbox->Word = 0;
5405       if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
5406         NextStatusMailbox = Controller->V1.FirstStatusMailbox;
5407       DAC960_V1_ProcessCompletedCommand(Command);
5408     }
5409   Controller->V1.NextStatusMailbox = NextStatusMailbox;
5410   /*
5411     Attempt to remove additional I/O Requests from the Controller's
5412     I/O Request Queue and queue them to the Controller.
5413   */
5414   DAC960_ProcessRequest(Controller);
5415   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5416   return IRQ_HANDLED;
5417 }
5418
5419
5420 /*
5421   DAC960_PG_InterruptHandler handles hardware interrupts from DAC960 PG Series
5422   Controllers.
5423 */
5424
5425 static irqreturn_t DAC960_PG_InterruptHandler(int IRQ_Channel,
5426                                        void *DeviceIdentifier)
5427 {
5428   DAC960_Controller_T *Controller = DeviceIdentifier;
5429   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5430   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
5431   unsigned long flags;
5432
5433   spin_lock_irqsave(&Controller->queue_lock, flags);
5434   DAC960_PG_AcknowledgeInterrupt(ControllerBaseAddress);
5435   NextStatusMailbox = Controller->V1.NextStatusMailbox;
5436   while (NextStatusMailbox->Fields.Valid)
5437     {
5438       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5439         NextStatusMailbox->Fields.CommandIdentifier;
5440       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5441       Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5442       NextStatusMailbox->Word = 0;
5443       if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
5444         NextStatusMailbox = Controller->V1.FirstStatusMailbox;
5445       DAC960_V1_ProcessCompletedCommand(Command);
5446     }
5447   Controller->V1.NextStatusMailbox = NextStatusMailbox;
5448   /*
5449     Attempt to remove additional I/O Requests from the Controller's
5450     I/O Request Queue and queue them to the Controller.
5451   */
5452   DAC960_ProcessRequest(Controller);
5453   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5454   return IRQ_HANDLED;
5455 }
5456
5457
5458 /*
5459   DAC960_PD_InterruptHandler handles hardware interrupts from DAC960 PD Series
5460   Controllers.
5461 */
5462
5463 static irqreturn_t DAC960_PD_InterruptHandler(int IRQ_Channel,
5464                                        void *DeviceIdentifier)
5465 {
5466   DAC960_Controller_T *Controller = DeviceIdentifier;
5467   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5468   unsigned long flags;
5469
5470   spin_lock_irqsave(&Controller->queue_lock, flags);
5471   while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
5472     {
5473       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5474         DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
5475       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5476       Command->V1.CommandStatus =
5477         DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
5478       DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
5479       DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
5480       DAC960_V1_ProcessCompletedCommand(Command);
5481     }
5482   /*
5483     Attempt to remove additional I/O Requests from the Controller's
5484     I/O Request Queue and queue them to the Controller.
5485   */
5486   DAC960_ProcessRequest(Controller);
5487   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5488   return IRQ_HANDLED;
5489 }
5490
5491
5492 /*
5493   DAC960_P_InterruptHandler handles hardware interrupts from DAC960 P Series
5494   Controllers.
5495
5496   Translations of DAC960_V1_Enquiry and DAC960_V1_GetDeviceState rely
5497   on the data having been placed into DAC960_Controller_T, rather than
5498   an arbitrary buffer.
5499 */
5500
5501 static irqreturn_t DAC960_P_InterruptHandler(int IRQ_Channel,
5502                                       void *DeviceIdentifier)
5503 {
5504   DAC960_Controller_T *Controller = DeviceIdentifier;
5505   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5506   unsigned long flags;
5507
5508   spin_lock_irqsave(&Controller->queue_lock, flags);
5509   while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
5510     {
5511       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5512         DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
5513       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5514       DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5515       DAC960_V1_CommandOpcode_T CommandOpcode =
5516         CommandMailbox->Common.CommandOpcode;
5517       Command->V1.CommandStatus =
5518         DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
5519       DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
5520       DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
5521       switch (CommandOpcode)
5522         {
5523         case DAC960_V1_Enquiry_Old:
5524           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Enquiry;
5525           DAC960_P_To_PD_TranslateEnquiry(Controller->V1.NewEnquiry);
5526           break;
5527         case DAC960_V1_GetDeviceState_Old:
5528           Command->V1.CommandMailbox.Common.CommandOpcode =
5529                                                 DAC960_V1_GetDeviceState;
5530           DAC960_P_To_PD_TranslateDeviceState(Controller->V1.NewDeviceState);
5531           break;
5532         case DAC960_V1_Read_Old:
5533           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Read;
5534           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5535           break;
5536         case DAC960_V1_Write_Old:
5537           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Write;
5538           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5539           break;
5540         case DAC960_V1_ReadWithScatterGather_Old:
5541           Command->V1.CommandMailbox.Common.CommandOpcode =
5542             DAC960_V1_ReadWithScatterGather;
5543           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5544           break;
5545         case DAC960_V1_WriteWithScatterGather_Old:
5546           Command->V1.CommandMailbox.Common.CommandOpcode =
5547             DAC960_V1_WriteWithScatterGather;
5548           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5549           break;
5550         default:
5551           break;
5552         }
5553       DAC960_V1_ProcessCompletedCommand(Command);
5554     }
5555   /*
5556     Attempt to remove additional I/O Requests from the Controller's
5557     I/O Request Queue and queue them to the Controller.
5558   */
5559   DAC960_ProcessRequest(Controller);
5560   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5561   return IRQ_HANDLED;
5562 }
5563
5564
5565 /*
5566   DAC960_V1_QueueMonitoringCommand queues a Monitoring Command to DAC960 V1
5567   Firmware Controllers.
5568 */
5569
5570 static void DAC960_V1_QueueMonitoringCommand(DAC960_Command_T *Command)
5571 {
5572   DAC960_Controller_T *Controller = Command->Controller;
5573   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5574   DAC960_V1_ClearCommand(Command);
5575   Command->CommandType = DAC960_MonitoringCommand;
5576   CommandMailbox->Type3.CommandOpcode = DAC960_V1_Enquiry;
5577   CommandMailbox->Type3.BusAddress = Controller->V1.NewEnquiryDMA;
5578   DAC960_QueueCommand(Command);
5579 }
5580
5581
5582 /*
5583   DAC960_V2_QueueMonitoringCommand queues a Monitoring Command to DAC960 V2
5584   Firmware Controllers.
5585 */
5586
5587 static void DAC960_V2_QueueMonitoringCommand(DAC960_Command_T *Command)
5588 {
5589   DAC960_Controller_T *Controller = Command->Controller;
5590   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
5591   DAC960_V2_ClearCommand(Command);
5592   Command->CommandType = DAC960_MonitoringCommand;
5593   CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
5594   CommandMailbox->ControllerInfo.CommandControlBits
5595                                 .DataTransferControllerToHost = true;
5596   CommandMailbox->ControllerInfo.CommandControlBits
5597                                 .NoAutoRequestSense = true;
5598   CommandMailbox->ControllerInfo.DataTransferSize =
5599     sizeof(DAC960_V2_ControllerInfo_T);
5600   CommandMailbox->ControllerInfo.ControllerNumber = 0;
5601   CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
5602   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
5603                                 .ScatterGatherSegments[0]
5604                                 .SegmentDataPointer =
5605     Controller->V2.NewControllerInformationDMA;
5606   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
5607                                 .ScatterGatherSegments[0]
5608                                 .SegmentByteCount =
5609     CommandMailbox->ControllerInfo.DataTransferSize;
5610   DAC960_QueueCommand(Command);
5611 }
5612
5613
5614 /*
5615   DAC960_MonitoringTimerFunction is the timer function for monitoring
5616   the status of DAC960 Controllers.
5617 */
5618
5619 static void DAC960_MonitoringTimerFunction(unsigned long TimerData)
5620 {
5621   DAC960_Controller_T *Controller = (DAC960_Controller_T *) TimerData;
5622   DAC960_Command_T *Command;
5623   unsigned long flags;
5624
5625   if (Controller->FirmwareType == DAC960_V1_Controller)
5626     {
5627       spin_lock_irqsave(&Controller->queue_lock, flags);
5628       /*
5629         Queue a Status Monitoring Command to Controller.
5630       */
5631       Command = DAC960_AllocateCommand(Controller);
5632       if (Command != NULL)
5633         DAC960_V1_QueueMonitoringCommand(Command);
5634       else Controller->MonitoringCommandDeferred = true;
5635       spin_unlock_irqrestore(&Controller->queue_lock, flags);
5636     }
5637   else
5638     {
5639       DAC960_V2_ControllerInfo_T *ControllerInfo =
5640         &Controller->V2.ControllerInformation;
5641       unsigned int StatusChangeCounter =
5642         Controller->V2.HealthStatusBuffer->StatusChangeCounter;
5643       bool ForceMonitoringCommand = false;
5644       if (time_after(jiffies, Controller->SecondaryMonitoringTime
5645           + DAC960_SecondaryMonitoringInterval))
5646         {
5647           int LogicalDriveNumber;
5648           for (LogicalDriveNumber = 0;
5649                LogicalDriveNumber < DAC960_MaxLogicalDrives;
5650                LogicalDriveNumber++)
5651             {
5652               DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
5653                 Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
5654               if (LogicalDeviceInfo == NULL) continue;
5655               if (!LogicalDeviceInfo->LogicalDeviceControl
5656                                      .LogicalDeviceInitialized)
5657                 {
5658                   ForceMonitoringCommand = true;
5659                   break;
5660                 }
5661             }
5662           Controller->SecondaryMonitoringTime = jiffies;
5663         }
5664       if (StatusChangeCounter == Controller->V2.StatusChangeCounter &&
5665           Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
5666           == Controller->V2.NextEventSequenceNumber &&
5667           (ControllerInfo->BackgroundInitializationsActive +
5668            ControllerInfo->LogicalDeviceInitializationsActive +
5669            ControllerInfo->PhysicalDeviceInitializationsActive +
5670            ControllerInfo->ConsistencyChecksActive +
5671            ControllerInfo->RebuildsActive +
5672            ControllerInfo->OnlineExpansionsActive == 0 ||
5673            time_before(jiffies, Controller->PrimaryMonitoringTime
5674            + DAC960_MonitoringTimerInterval)) &&
5675           !ForceMonitoringCommand)
5676         {
5677           Controller->MonitoringTimer.expires =
5678             jiffies + DAC960_HealthStatusMonitoringInterval;
5679             add_timer(&Controller->MonitoringTimer);
5680           return;
5681         }
5682       Controller->V2.StatusChangeCounter = StatusChangeCounter;
5683       Controller->PrimaryMonitoringTime = jiffies;
5684
5685       spin_lock_irqsave(&Controller->queue_lock, flags);
5686       /*
5687         Queue a Status Monitoring Command to Controller.
5688       */
5689       Command = DAC960_AllocateCommand(Controller);
5690       if (Command != NULL)
5691         DAC960_V2_QueueMonitoringCommand(Command);
5692       else Controller->MonitoringCommandDeferred = true;
5693       spin_unlock_irqrestore(&Controller->queue_lock, flags);
5694       /*
5695         Wake up any processes waiting on a Health Status Buffer change.
5696       */
5697       wake_up(&Controller->HealthStatusWaitQueue);
5698     }
5699 }
5700
5701 /*
5702   DAC960_CheckStatusBuffer verifies that there is room to hold ByteCount
5703   additional bytes in the Combined Status Buffer and grows the buffer if
5704   necessary.  It returns true if there is enough room and false otherwise.
5705 */
5706
5707 static bool DAC960_CheckStatusBuffer(DAC960_Controller_T *Controller,
5708                                         unsigned int ByteCount)
5709 {
5710   unsigned char *NewStatusBuffer;
5711   if (Controller->InitialStatusLength + 1 +
5712       Controller->CurrentStatusLength + ByteCount + 1 <=
5713       Controller->CombinedStatusBufferLength)
5714     return true;
5715   if (Controller->CombinedStatusBufferLength == 0)
5716     {
5717       unsigned int NewStatusBufferLength = DAC960_InitialStatusBufferSize;
5718       while (NewStatusBufferLength < ByteCount)
5719         NewStatusBufferLength *= 2;
5720       Controller->CombinedStatusBuffer = kmalloc(NewStatusBufferLength,
5721                                                   GFP_ATOMIC);
5722       if (Controller->CombinedStatusBuffer == NULL) return false;
5723       Controller->CombinedStatusBufferLength = NewStatusBufferLength;
5724       return true;
5725     }
5726   NewStatusBuffer = kmalloc(2 * Controller->CombinedStatusBufferLength,
5727                              GFP_ATOMIC);
5728   if (NewStatusBuffer == NULL)
5729     {
5730       DAC960_Warning("Unable to expand Combined Status Buffer - Truncating\n",
5731                      Controller);
5732       return false;
5733     }
5734   memcpy(NewStatusBuffer, Controller->CombinedStatusBuffer,
5735          Controller->CombinedStatusBufferLength);
5736   kfree(Controller->CombinedStatusBuffer);
5737   Controller->CombinedStatusBuffer = NewStatusBuffer;
5738   Controller->CombinedStatusBufferLength *= 2;
5739   Controller->CurrentStatusBuffer =
5740     &NewStatusBuffer[Controller->InitialStatusLength + 1];
5741   return true;
5742 }
5743
5744
5745 /*
5746   DAC960_Message prints Driver Messages.
5747 */
5748
5749 static void DAC960_Message(DAC960_MessageLevel_T MessageLevel,
5750                            unsigned char *Format,
5751                            DAC960_Controller_T *Controller,
5752                            ...)
5753 {
5754   static unsigned char Buffer[DAC960_LineBufferSize];
5755   static bool BeginningOfLine = true;
5756   va_list Arguments;
5757   int Length = 0;
5758   va_start(Arguments, Controller);
5759   Length = vsprintf(Buffer, Format, Arguments);
5760   va_end(Arguments);
5761   if (Controller == NULL)
5762     printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5763            DAC960_ControllerCount, Buffer);
5764   else if (MessageLevel == DAC960_AnnounceLevel ||
5765            MessageLevel == DAC960_InfoLevel)
5766     {
5767       if (!Controller->ControllerInitialized)
5768         {
5769           if (DAC960_CheckStatusBuffer(Controller, Length))
5770             {
5771               strcpy(&Controller->CombinedStatusBuffer
5772                                   [Controller->InitialStatusLength],
5773                      Buffer);
5774               Controller->InitialStatusLength += Length;
5775               Controller->CurrentStatusBuffer =
5776                 &Controller->CombinedStatusBuffer
5777                              [Controller->InitialStatusLength + 1];
5778             }
5779           if (MessageLevel == DAC960_AnnounceLevel)
5780             {
5781               static int AnnouncementLines = 0;
5782               if (++AnnouncementLines <= 2)
5783                 printk("%sDAC960: %s", DAC960_MessageLevelMap[MessageLevel],
5784                        Buffer);
5785             }
5786           else
5787             {
5788               if (BeginningOfLine)
5789                 {
5790                   if (Buffer[0] != '\n' || Length > 1)
5791                     printk("%sDAC960#%d: %s",
5792                            DAC960_MessageLevelMap[MessageLevel],
5793                            Controller->ControllerNumber, Buffer);
5794                 }
5795               else printk("%s", Buffer);
5796             }
5797         }
5798       else if (DAC960_CheckStatusBuffer(Controller, Length))
5799         {
5800           strcpy(&Controller->CurrentStatusBuffer[
5801                     Controller->CurrentStatusLength], Buffer);
5802           Controller->CurrentStatusLength += Length;
5803         }
5804     }
5805   else if (MessageLevel == DAC960_ProgressLevel)
5806     {
5807       strcpy(Controller->ProgressBuffer, Buffer);
5808       Controller->ProgressBufferLength = Length;
5809       if (Controller->EphemeralProgressMessage)
5810         {
5811           if (time_after_eq(jiffies, Controller->LastProgressReportTime
5812               + DAC960_ProgressReportingInterval))
5813             {
5814               printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5815                      Controller->ControllerNumber, Buffer);
5816               Controller->LastProgressReportTime = jiffies;
5817             }
5818         }
5819       else printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5820                   Controller->ControllerNumber, Buffer);
5821     }
5822   else if (MessageLevel == DAC960_UserCriticalLevel)
5823     {
5824       strcpy(&Controller->UserStatusBuffer[Controller->UserStatusLength],
5825              Buffer);
5826       Controller->UserStatusLength += Length;
5827       if (Buffer[0] != '\n' || Length > 1)
5828         printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5829                Controller->ControllerNumber, Buffer);
5830     }
5831   else
5832     {
5833       if (BeginningOfLine)
5834         printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5835                Controller->ControllerNumber, Buffer);
5836       else printk("%s", Buffer);
5837     }
5838   BeginningOfLine = (Buffer[Length-1] == '\n');
5839 }
5840
5841
5842 /*
5843   DAC960_ParsePhysicalDevice parses spaces followed by a Physical Device
5844   Channel:TargetID specification from a User Command string.  It updates
5845   Channel and TargetID and returns true on success and false on failure.
5846 */
5847
5848 static bool DAC960_ParsePhysicalDevice(DAC960_Controller_T *Controller,
5849                                           char *UserCommandString,
5850                                           unsigned char *Channel,
5851                                           unsigned char *TargetID)
5852 {
5853   char *NewUserCommandString = UserCommandString;
5854   unsigned long XChannel, XTargetID;
5855   while (*UserCommandString == ' ') UserCommandString++;
5856   if (UserCommandString == NewUserCommandString)
5857     return false;
5858   XChannel = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5859   if (NewUserCommandString == UserCommandString ||
5860       *NewUserCommandString != ':' ||
5861       XChannel >= Controller->Channels)
5862     return false;
5863   UserCommandString = ++NewUserCommandString;
5864   XTargetID = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5865   if (NewUserCommandString == UserCommandString ||
5866       *NewUserCommandString != '\0' ||
5867       XTargetID >= Controller->Targets)
5868     return false;
5869   *Channel = XChannel;
5870   *TargetID = XTargetID;
5871   return true;
5872 }
5873
5874
5875 /*
5876   DAC960_ParseLogicalDrive parses spaces followed by a Logical Drive Number
5877   specification from a User Command string.  It updates LogicalDriveNumber and
5878   returns true on success and false on failure.
5879 */
5880
5881 static bool DAC960_ParseLogicalDrive(DAC960_Controller_T *Controller,
5882                                         char *UserCommandString,
5883                                         unsigned char *LogicalDriveNumber)
5884 {
5885   char *NewUserCommandString = UserCommandString;
5886   unsigned long XLogicalDriveNumber;
5887   while (*UserCommandString == ' ') UserCommandString++;
5888   if (UserCommandString == NewUserCommandString)
5889     return false;
5890   XLogicalDriveNumber =
5891     simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5892   if (NewUserCommandString == UserCommandString ||
5893       *NewUserCommandString != '\0' ||
5894       XLogicalDriveNumber > DAC960_MaxLogicalDrives - 1)
5895     return false;
5896   *LogicalDriveNumber = XLogicalDriveNumber;
5897   return true;
5898 }
5899
5900
5901 /*
5902   DAC960_V1_SetDeviceState sets the Device State for a Physical Device for
5903   DAC960 V1 Firmware Controllers.
5904 */
5905
5906 static void DAC960_V1_SetDeviceState(DAC960_Controller_T *Controller,
5907                                      DAC960_Command_T *Command,
5908                                      unsigned char Channel,
5909                                      unsigned char TargetID,
5910                                      DAC960_V1_PhysicalDeviceState_T
5911                                        DeviceState,
5912                                      const unsigned char *DeviceStateString)
5913 {
5914   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5915   CommandMailbox->Type3D.CommandOpcode = DAC960_V1_StartDevice;
5916   CommandMailbox->Type3D.Channel = Channel;
5917   CommandMailbox->Type3D.TargetID = TargetID;
5918   CommandMailbox->Type3D.DeviceState = DeviceState;
5919   CommandMailbox->Type3D.Modifier = 0;
5920   DAC960_ExecuteCommand(Command);
5921   switch (Command->V1.CommandStatus)
5922     {
5923     case DAC960_V1_NormalCompletion:
5924       DAC960_UserCritical("%s of Physical Device %d:%d Succeeded\n", Controller,
5925                           DeviceStateString, Channel, TargetID);
5926       break;
5927     case DAC960_V1_UnableToStartDevice:
5928       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5929                           "Unable to Start Device\n", Controller,
5930                           DeviceStateString, Channel, TargetID);
5931       break;
5932     case DAC960_V1_NoDeviceAtAddress:
5933       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5934                           "No Device at Address\n", Controller,
5935                           DeviceStateString, Channel, TargetID);
5936       break;
5937     case DAC960_V1_InvalidChannelOrTargetOrModifier:
5938       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5939                           "Invalid Channel or Target or Modifier\n",
5940                           Controller, DeviceStateString, Channel, TargetID);
5941       break;
5942     case DAC960_V1_ChannelBusy:
5943       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5944                           "Channel Busy\n", Controller,
5945                           DeviceStateString, Channel, TargetID);
5946       break;
5947     default:
5948       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5949                           "Unexpected Status %04X\n", Controller,
5950                           DeviceStateString, Channel, TargetID,
5951                           Command->V1.CommandStatus);
5952       break;
5953     }
5954 }
5955
5956
5957 /*
5958   DAC960_V1_ExecuteUserCommand executes a User Command for DAC960 V1 Firmware
5959   Controllers.
5960 */
5961
5962 static bool DAC960_V1_ExecuteUserCommand(DAC960_Controller_T *Controller,
5963                                             unsigned char *UserCommand)
5964 {
5965   DAC960_Command_T *Command;
5966   DAC960_V1_CommandMailbox_T *CommandMailbox;
5967   unsigned long flags;
5968   unsigned char Channel, TargetID, LogicalDriveNumber;
5969
5970   spin_lock_irqsave(&Controller->queue_lock, flags);
5971   while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
5972     DAC960_WaitForCommand(Controller);
5973   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5974   Controller->UserStatusLength = 0;
5975   DAC960_V1_ClearCommand(Command);
5976   Command->CommandType = DAC960_ImmediateCommand;
5977   CommandMailbox = &Command->V1.CommandMailbox;
5978   if (strcmp(UserCommand, "flush-cache") == 0)
5979     {
5980       CommandMailbox->Type3.CommandOpcode = DAC960_V1_Flush;
5981       DAC960_ExecuteCommand(Command);
5982       DAC960_UserCritical("Cache Flush Completed\n", Controller);
5983     }
5984   else if (strncmp(UserCommand, "kill", 4) == 0 &&
5985            DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
5986                                       &Channel, &TargetID))
5987     {
5988       DAC960_V1_DeviceState_T *DeviceState =
5989         &Controller->V1.DeviceState[Channel][TargetID];
5990       if (DeviceState->Present &&
5991           DeviceState->DeviceType == DAC960_V1_DiskType &&
5992           DeviceState->DeviceState != DAC960_V1_Device_Dead)
5993         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
5994                                  DAC960_V1_Device_Dead, "Kill");
5995       else DAC960_UserCritical("Kill of Physical Device %d:%d Illegal\n",
5996                                Controller, Channel, TargetID);
5997     }
5998   else if (strncmp(UserCommand, "make-online", 11) == 0 &&
5999            DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
6000                                       &Channel, &TargetID))
6001     {
6002       DAC960_V1_DeviceState_T *DeviceState =
6003         &Controller->V1.DeviceState[Channel][TargetID];
6004       if (DeviceState->Present &&
6005           DeviceState->DeviceType == DAC960_V1_DiskType &&
6006           DeviceState->DeviceState == DAC960_V1_Device_Dead)
6007         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
6008                                  DAC960_V1_Device_Online, "Make Online");
6009       else DAC960_UserCritical("Make Online of Physical Device %d:%d Illegal\n",
6010                                Controller, Channel, TargetID);
6011
6012     }
6013   else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
6014            DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
6015                                       &Channel, &TargetID))
6016     {
6017       DAC960_V1_DeviceState_T *DeviceState =
6018         &Controller->V1.DeviceState[Channel][TargetID];
6019       if (DeviceState->Present &&
6020           DeviceState->DeviceType == DAC960_V1_DiskType &&
6021           DeviceState->DeviceState == DAC960_V1_Device_Dead)
6022         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
6023                                  DAC960_V1_Device_Standby, "Make Standby");
6024       else DAC960_UserCritical("Make Standby of Physical "
6025                                "Device %d:%d Illegal\n",
6026                                Controller, Channel, TargetID);
6027     }
6028   else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
6029            DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
6030                                       &Channel, &TargetID))
6031     {
6032       CommandMailbox->Type3D.CommandOpcode = DAC960_V1_RebuildAsync;
6033       CommandMailbox->Type3D.Channel = Channel;
6034       CommandMailbox->Type3D.TargetID = TargetID;
6035       DAC960_ExecuteCommand(Command);
6036       switch (Command->V1.CommandStatus)
6037         {
6038         case DAC960_V1_NormalCompletion:
6039           DAC960_UserCritical("Rebuild of Physical Device %d:%d Initiated\n",
6040                               Controller, Channel, TargetID);
6041           break;
6042         case DAC960_V1_AttemptToRebuildOnlineDrive:
6043           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6044                               "Attempt to Rebuild Online or "
6045                               "Unresponsive Drive\n",
6046                               Controller, Channel, TargetID);
6047           break;
6048         case DAC960_V1_NewDiskFailedDuringRebuild:
6049           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6050                               "New Disk Failed During Rebuild\n",
6051                               Controller, Channel, TargetID);
6052           break;
6053         case DAC960_V1_InvalidDeviceAddress:
6054           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6055                               "Invalid Device Address\n",
6056                               Controller, Channel, TargetID);
6057           break;
6058         case DAC960_V1_RebuildOrCheckAlreadyInProgress:
6059           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6060                               "Rebuild or Consistency Check Already "
6061                               "in Progress\n", Controller, Channel, TargetID);
6062           break;
6063         default:
6064           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6065                               "Unexpected Status %04X\n", Controller,
6066                               Channel, TargetID, Command->V1.CommandStatus);
6067           break;
6068         }
6069     }
6070   else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
6071            DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
6072                                     &LogicalDriveNumber))
6073     {
6074       CommandMailbox->Type3C.CommandOpcode = DAC960_V1_CheckConsistencyAsync;
6075       CommandMailbox->Type3C.LogicalDriveNumber = LogicalDriveNumber;
6076       CommandMailbox->Type3C.AutoRestore = true;
6077       DAC960_ExecuteCommand(Command);
6078       switch (Command->V1.CommandStatus)
6079         {
6080         case DAC960_V1_NormalCompletion:
6081           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6082                               "(/dev/rd/c%dd%d) Initiated\n",
6083                               Controller, LogicalDriveNumber,
6084                               Controller->ControllerNumber,
6085                               LogicalDriveNumber);
6086           break;
6087         case DAC960_V1_DependentDiskIsDead:
6088           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6089                               "(/dev/rd/c%dd%d) Failed - "
6090                               "Dependent Physical Device is DEAD\n",
6091                               Controller, LogicalDriveNumber,
6092                               Controller->ControllerNumber,
6093                               LogicalDriveNumber);
6094           break;
6095         case DAC960_V1_InvalidOrNonredundantLogicalDrive:
6096           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6097                               "(/dev/rd/c%dd%d) Failed - "
6098                               "Invalid or Nonredundant Logical Drive\n",
6099                               Controller, LogicalDriveNumber,
6100                               Controller->ControllerNumber,
6101                               LogicalDriveNumber);
6102           break;
6103         case DAC960_V1_RebuildOrCheckAlreadyInProgress:
6104           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6105                               "(/dev/rd/c%dd%d) Failed - Rebuild or "
6106                               "Consistency Check Already in Progress\n",
6107                               Controller, LogicalDriveNumber,
6108                               Controller->ControllerNumber,
6109                               LogicalDriveNumber);
6110           break;
6111         default:
6112           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6113                               "(/dev/rd/c%dd%d) Failed - "
6114                               "Unexpected Status %04X\n",
6115                               Controller, LogicalDriveNumber,
6116                               Controller->ControllerNumber,
6117                               LogicalDriveNumber, Command->V1.CommandStatus);
6118           break;
6119         }
6120     }
6121   else if (strcmp(UserCommand, "cancel-rebuild") == 0 ||
6122            strcmp(UserCommand, "cancel-consistency-check") == 0)
6123     {
6124       /*
6125         the OldRebuildRateConstant is never actually used
6126         once its value is retrieved from the controller.
6127        */
6128       unsigned char *OldRebuildRateConstant;
6129       dma_addr_t OldRebuildRateConstantDMA;
6130
6131       OldRebuildRateConstant = pci_alloc_consistent( Controller->PCIDevice,
6132                 sizeof(char), &OldRebuildRateConstantDMA);
6133       if (OldRebuildRateConstant == NULL) {
6134          DAC960_UserCritical("Cancellation of Rebuild or "
6135                              "Consistency Check Failed - "
6136                              "Out of Memory",
6137                              Controller);
6138          goto failure;
6139       }
6140       CommandMailbox->Type3R.CommandOpcode = DAC960_V1_RebuildControl;
6141       CommandMailbox->Type3R.RebuildRateConstant = 0xFF;
6142       CommandMailbox->Type3R.BusAddress = OldRebuildRateConstantDMA;
6143       DAC960_ExecuteCommand(Command);
6144       switch (Command->V1.CommandStatus)
6145         {
6146         case DAC960_V1_NormalCompletion:
6147           DAC960_UserCritical("Rebuild or Consistency Check Cancelled\n",
6148                               Controller);
6149           break;
6150         default:
6151           DAC960_UserCritical("Cancellation of Rebuild or "
6152                               "Consistency Check Failed - "
6153                               "Unexpected Status %04X\n",
6154                               Controller, Command->V1.CommandStatus);
6155           break;
6156         }
6157 failure:
6158         pci_free_consistent(Controller->PCIDevice, sizeof(char),
6159                 OldRebuildRateConstant, OldRebuildRateConstantDMA);
6160     }
6161   else DAC960_UserCritical("Illegal User Command: '%s'\n",
6162                            Controller, UserCommand);
6163
6164   spin_lock_irqsave(&Controller->queue_lock, flags);
6165   DAC960_DeallocateCommand(Command);
6166   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6167   return true;
6168 }
6169
6170
6171 /*
6172   DAC960_V2_TranslatePhysicalDevice translates a Physical Device Channel and
6173   TargetID into a Logical Device.  It returns true on success and false
6174   on failure.
6175 */
6176
6177 static bool DAC960_V2_TranslatePhysicalDevice(DAC960_Command_T *Command,
6178                                                  unsigned char Channel,
6179                                                  unsigned char TargetID,
6180                                                  unsigned short
6181                                                    *LogicalDeviceNumber)
6182 {
6183   DAC960_V2_CommandMailbox_T SavedCommandMailbox, *CommandMailbox;
6184   DAC960_Controller_T *Controller =  Command->Controller;
6185
6186   CommandMailbox = &Command->V2.CommandMailbox;
6187   memcpy(&SavedCommandMailbox, CommandMailbox,
6188          sizeof(DAC960_V2_CommandMailbox_T));
6189
6190   CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
6191   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
6192                                     .DataTransferControllerToHost = true;
6193   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
6194                                     .NoAutoRequestSense = true;
6195   CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
6196     sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
6197   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
6198   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
6199   CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
6200     DAC960_V2_TranslatePhysicalToLogicalDevice;
6201   CommandMailbox->Common.DataTransferMemoryAddress
6202                         .ScatterGatherSegments[0]
6203                         .SegmentDataPointer =
6204                 Controller->V2.PhysicalToLogicalDeviceDMA;
6205   CommandMailbox->Common.DataTransferMemoryAddress
6206                         .ScatterGatherSegments[0]
6207                         .SegmentByteCount =
6208                 CommandMailbox->Common.DataTransferSize;
6209
6210   DAC960_ExecuteCommand(Command);
6211   *LogicalDeviceNumber = Controller->V2.PhysicalToLogicalDevice->LogicalDeviceNumber;
6212
6213   memcpy(CommandMailbox, &SavedCommandMailbox,
6214          sizeof(DAC960_V2_CommandMailbox_T));
6215   return (Command->V2.CommandStatus == DAC960_V2_NormalCompletion);
6216 }
6217
6218
6219 /*
6220   DAC960_V2_ExecuteUserCommand executes a User Command for DAC960 V2 Firmware
6221   Controllers.
6222 */
6223
6224 static bool DAC960_V2_ExecuteUserCommand(DAC960_Controller_T *Controller,
6225                                             unsigned char *UserCommand)
6226 {
6227   DAC960_Command_T *Command;
6228   DAC960_V2_CommandMailbox_T *CommandMailbox;
6229   unsigned long flags;
6230   unsigned char Channel, TargetID, LogicalDriveNumber;
6231   unsigned short LogicalDeviceNumber;
6232
6233   spin_lock_irqsave(&Controller->queue_lock, flags);
6234   while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6235     DAC960_WaitForCommand(Controller);
6236   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6237   Controller->UserStatusLength = 0;
6238   DAC960_V2_ClearCommand(Command);
6239   Command->CommandType = DAC960_ImmediateCommand;
6240   CommandMailbox = &Command->V2.CommandMailbox;
6241   CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
6242   CommandMailbox->Common.CommandControlBits.DataTransferControllerToHost = true;
6243   CommandMailbox->Common.CommandControlBits.NoAutoRequestSense = true;
6244   if (strcmp(UserCommand, "flush-cache") == 0)
6245     {
6246       CommandMailbox->DeviceOperation.IOCTL_Opcode = DAC960_V2_PauseDevice;
6247       CommandMailbox->DeviceOperation.OperationDevice =
6248         DAC960_V2_RAID_Controller;
6249       DAC960_ExecuteCommand(Command);
6250       DAC960_UserCritical("Cache Flush Completed\n", Controller);
6251     }
6252   else if (strncmp(UserCommand, "kill", 4) == 0 &&
6253            DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
6254                                       &Channel, &TargetID) &&
6255            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6256                                              &LogicalDeviceNumber))
6257     {
6258       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6259         LogicalDeviceNumber;
6260       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6261         DAC960_V2_SetDeviceState;
6262       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6263         DAC960_V2_Device_Dead;
6264       DAC960_ExecuteCommand(Command);
6265       DAC960_UserCritical("Kill of Physical Device %d:%d %s\n",
6266                           Controller, Channel, TargetID,
6267                           (Command->V2.CommandStatus
6268                            == DAC960_V2_NormalCompletion
6269                            ? "Succeeded" : "Failed"));
6270     }
6271   else if (strncmp(UserCommand, "make-online", 11) == 0 &&
6272            DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
6273                                       &Channel, &TargetID) &&
6274            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6275                                              &LogicalDeviceNumber))
6276     {
6277       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6278         LogicalDeviceNumber;
6279       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6280         DAC960_V2_SetDeviceState;
6281       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6282         DAC960_V2_Device_Online;
6283       DAC960_ExecuteCommand(Command);
6284       DAC960_UserCritical("Make Online of Physical Device %d:%d %s\n",
6285                           Controller, Channel, TargetID,
6286                           (Command->V2.CommandStatus
6287                            == DAC960_V2_NormalCompletion
6288                            ? "Succeeded" : "Failed"));
6289     }
6290   else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
6291            DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
6292                                       &Channel, &TargetID) &&
6293            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6294                                              &LogicalDeviceNumber))
6295     {
6296       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6297         LogicalDeviceNumber;
6298       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6299         DAC960_V2_SetDeviceState;
6300       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6301         DAC960_V2_Device_Standby;
6302       DAC960_ExecuteCommand(Command);
6303       DAC960_UserCritical("Make Standby of Physical Device %d:%d %s\n",
6304                           Controller, Channel, TargetID,
6305                           (Command->V2.CommandStatus
6306                            == DAC960_V2_NormalCompletion
6307                            ? "Succeeded" : "Failed"));
6308     }
6309   else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
6310            DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
6311                                       &Channel, &TargetID) &&
6312            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6313                                              &LogicalDeviceNumber))
6314     {
6315       CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
6316         LogicalDeviceNumber;
6317       CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
6318         DAC960_V2_RebuildDeviceStart;
6319       DAC960_ExecuteCommand(Command);
6320       DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
6321                           Controller, Channel, TargetID,
6322                           (Command->V2.CommandStatus
6323                            == DAC960_V2_NormalCompletion
6324                            ? "Initiated" : "Not Initiated"));
6325     }
6326   else if (strncmp(UserCommand, "cancel-rebuild", 14) == 0 &&
6327            DAC960_ParsePhysicalDevice(Controller, &UserCommand[14],
6328                                       &Channel, &TargetID) &&
6329            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6330                                              &LogicalDeviceNumber))
6331     {
6332       CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
6333         LogicalDeviceNumber;
6334       CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
6335         DAC960_V2_RebuildDeviceStop;
6336       DAC960_ExecuteCommand(Command);
6337       DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
6338                           Controller, Channel, TargetID,
6339                           (Command->V2.CommandStatus
6340                            == DAC960_V2_NormalCompletion
6341                            ? "Cancelled" : "Not Cancelled"));
6342     }
6343   else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
6344            DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
6345                                     &LogicalDriveNumber))
6346     {
6347       CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
6348         LogicalDriveNumber;
6349       CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
6350         DAC960_V2_ConsistencyCheckStart;
6351       CommandMailbox->ConsistencyCheck.RestoreConsistency = true;
6352       CommandMailbox->ConsistencyCheck.InitializedAreaOnly = false;
6353       DAC960_ExecuteCommand(Command);
6354       DAC960_UserCritical("Consistency Check of Logical Drive %d "
6355                           "(/dev/rd/c%dd%d) %s\n",
6356                           Controller, LogicalDriveNumber,
6357                           Controller->ControllerNumber,
6358                           LogicalDriveNumber,
6359                           (Command->V2.CommandStatus
6360                            == DAC960_V2_NormalCompletion
6361                            ? "Initiated" : "Not Initiated"));
6362     }
6363   else if (strncmp(UserCommand, "cancel-consistency-check", 24) == 0 &&
6364            DAC960_ParseLogicalDrive(Controller, &UserCommand[24],
6365                                     &LogicalDriveNumber))
6366     {
6367       CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
6368         LogicalDriveNumber;
6369       CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
6370         DAC960_V2_ConsistencyCheckStop;
6371       DAC960_ExecuteCommand(Command);
6372       DAC960_UserCritical("Consistency Check of Logical Drive %d "
6373                           "(/dev/rd/c%dd%d) %s\n",
6374                           Controller, LogicalDriveNumber,
6375                           Controller->ControllerNumber,
6376                           LogicalDriveNumber,
6377                           (Command->V2.CommandStatus
6378                            == DAC960_V2_NormalCompletion
6379                            ? "Cancelled" : "Not Cancelled"));
6380     }
6381   else if (strcmp(UserCommand, "perform-discovery") == 0)
6382     {
6383       CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_StartDiscovery;
6384       DAC960_ExecuteCommand(Command);
6385       DAC960_UserCritical("Discovery %s\n", Controller,
6386                           (Command->V2.CommandStatus
6387                            == DAC960_V2_NormalCompletion
6388                            ? "Initiated" : "Not Initiated"));
6389       if (Command->V2.CommandStatus == DAC960_V2_NormalCompletion)
6390         {
6391           CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
6392           CommandMailbox->ControllerInfo.CommandControlBits
6393                                         .DataTransferControllerToHost = true;
6394           CommandMailbox->ControllerInfo.CommandControlBits
6395                                         .NoAutoRequestSense = true;
6396           CommandMailbox->ControllerInfo.DataTransferSize =
6397             sizeof(DAC960_V2_ControllerInfo_T);
6398           CommandMailbox->ControllerInfo.ControllerNumber = 0;
6399           CommandMailbox->ControllerInfo.IOCTL_Opcode =
6400             DAC960_V2_GetControllerInfo;
6401           /*
6402            * How does this NOT race with the queued Monitoring
6403            * usage of this structure?
6404            */
6405           CommandMailbox->ControllerInfo.DataTransferMemoryAddress
6406                                         .ScatterGatherSegments[0]
6407                                         .SegmentDataPointer =
6408             Controller->V2.NewControllerInformationDMA;
6409           CommandMailbox->ControllerInfo.DataTransferMemoryAddress
6410                                         .ScatterGatherSegments[0]
6411                                         .SegmentByteCount =
6412             CommandMailbox->ControllerInfo.DataTransferSize;
6413           DAC960_ExecuteCommand(Command);
6414           while (Controller->V2.NewControllerInformation->PhysicalScanActive)
6415             {
6416               DAC960_ExecuteCommand(Command);
6417               sleep_on_timeout(&Controller->CommandWaitQueue, HZ);
6418             }
6419           DAC960_UserCritical("Discovery Completed\n", Controller);
6420         }
6421     }
6422   else if (strcmp(UserCommand, "suppress-enclosure-messages") == 0)
6423     Controller->SuppressEnclosureMessages = true;
6424   else DAC960_UserCritical("Illegal User Command: '%s'\n",
6425                            Controller, UserCommand);
6426
6427   spin_lock_irqsave(&Controller->queue_lock, flags);
6428   DAC960_DeallocateCommand(Command);
6429   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6430   return true;
6431 }
6432
6433 static int dac960_proc_show(struct seq_file *m, void *v)
6434 {
6435   unsigned char *StatusMessage = "OK\n";
6436   int ControllerNumber;
6437   for (ControllerNumber = 0;
6438        ControllerNumber < DAC960_ControllerCount;
6439        ControllerNumber++)
6440     {
6441       DAC960_Controller_T *Controller = DAC960_Controllers[ControllerNumber];
6442       if (Controller == NULL) continue;
6443       if (Controller->MonitoringAlertMode)
6444         {
6445           StatusMessage = "ALERT\n";
6446           break;
6447         }
6448     }
6449   seq_puts(m, StatusMessage);
6450   return 0;
6451 }
6452
6453 static int dac960_proc_open(struct inode *inode, struct file *file)
6454 {
6455         return single_open(file, dac960_proc_show, NULL);
6456 }
6457
6458 static const struct file_operations dac960_proc_fops = {
6459         .owner          = THIS_MODULE,
6460         .open           = dac960_proc_open,
6461         .read           = seq_read,
6462         .llseek         = seq_lseek,
6463         .release        = single_release,
6464 };
6465
6466 static int dac960_initial_status_proc_show(struct seq_file *m, void *v)
6467 {
6468         DAC960_Controller_T *Controller = (DAC960_Controller_T *)m->private;
6469         seq_printf(m, "%.*s", Controller->InitialStatusLength, Controller->CombinedStatusBuffer);
6470         return 0;
6471 }
6472
6473 static int dac960_initial_status_proc_open(struct inode *inode, struct file *file)
6474 {
6475         return single_open(file, dac960_initial_status_proc_show, PDE(inode)->data);
6476 }
6477
6478 static const struct file_operations dac960_initial_status_proc_fops = {
6479         .owner          = THIS_MODULE,
6480         .open           = dac960_initial_status_proc_open,
6481         .read           = seq_read,
6482         .llseek         = seq_lseek,
6483         .release        = single_release,
6484 };
6485
6486 static int dac960_current_status_proc_show(struct seq_file *m, void *v)
6487 {
6488   DAC960_Controller_T *Controller = (DAC960_Controller_T *) m->private;
6489   unsigned char *StatusMessage =
6490     "No Rebuild or Consistency Check in Progress\n";
6491   int ProgressMessageLength = strlen(StatusMessage);
6492   if (jiffies != Controller->LastCurrentStatusTime)
6493     {
6494       Controller->CurrentStatusLength = 0;
6495       DAC960_AnnounceDriver(Controller);
6496       DAC960_ReportControllerConfiguration(Controller);
6497       DAC960_ReportDeviceConfiguration(Controller);
6498       if (Controller->ProgressBufferLength > 0)
6499         ProgressMessageLength = Controller->ProgressBufferLength;
6500       if (DAC960_CheckStatusBuffer(Controller, 2 + ProgressMessageLength))
6501         {
6502           unsigned char *CurrentStatusBuffer = Controller->CurrentStatusBuffer;
6503           CurrentStatusBuffer[Controller->CurrentStatusLength++] = ' ';
6504           CurrentStatusBuffer[Controller->CurrentStatusLength++] = ' ';
6505           if (Controller->ProgressBufferLength > 0)
6506             strcpy(&CurrentStatusBuffer[Controller->CurrentStatusLength],
6507                    Controller->ProgressBuffer);
6508           else
6509             strcpy(&CurrentStatusBuffer[Controller->CurrentStatusLength],
6510                    StatusMessage);
6511           Controller->CurrentStatusLength += ProgressMessageLength;
6512         }
6513       Controller->LastCurrentStatusTime = jiffies;
6514     }
6515         seq_printf(m, "%.*s", Controller->CurrentStatusLength, Controller->CurrentStatusBuffer);
6516         return 0;
6517 }
6518
6519 static int dac960_current_status_proc_open(struct inode *inode, struct file *file)
6520 {
6521         return single_open(file, dac960_current_status_proc_show, PDE(inode)->data);
6522 }
6523
6524 static const struct file_operations dac960_current_status_proc_fops = {
6525         .owner          = THIS_MODULE,
6526         .open           = dac960_current_status_proc_open,
6527         .read           = seq_read,
6528         .llseek         = seq_lseek,
6529         .release        = single_release,
6530 };
6531
6532 static int dac960_user_command_proc_show(struct seq_file *m, void *v)
6533 {
6534         DAC960_Controller_T *Controller = (DAC960_Controller_T *)m->private;
6535
6536         seq_printf(m, "%.*s", Controller->UserStatusLength, Controller->UserStatusBuffer);
6537         return 0;
6538 }
6539
6540 static int dac960_user_command_proc_open(struct inode *inode, struct file *file)
6541 {
6542         return single_open(file, dac960_user_command_proc_show, PDE(inode)->data);
6543 }
6544
6545 static ssize_t dac960_user_command_proc_write(struct file *file,
6546                                        const char __user *Buffer,
6547                                        size_t Count, loff_t *pos)
6548 {
6549   DAC960_Controller_T *Controller = (DAC960_Controller_T *) PDE(file->f_path.dentry->d_inode)->data;
6550   unsigned char CommandBuffer[80];
6551   int Length;
6552   if (Count > sizeof(CommandBuffer)-1) return -EINVAL;
6553   if (copy_from_user(CommandBuffer, Buffer, Count)) return -EFAULT;
6554   CommandBuffer[Count] = '\0';
6555   Length = strlen(CommandBuffer);
6556   if (Length > 0 && CommandBuffer[Length-1] == '\n')
6557     CommandBuffer[--Length] = '\0';
6558   if (Controller->FirmwareType == DAC960_V1_Controller)
6559     return (DAC960_V1_ExecuteUserCommand(Controller, CommandBuffer)
6560             ? Count : -EBUSY);
6561   else
6562     return (DAC960_V2_ExecuteUserCommand(Controller, CommandBuffer)
6563             ? Count : -EBUSY);
6564 }
6565
6566 static const struct file_operations dac960_user_command_proc_fops = {
6567         .owner          = THIS_MODULE,
6568         .open           = dac960_user_command_proc_open,
6569         .read           = seq_read,
6570         .llseek         = seq_lseek,
6571         .release        = single_release,
6572         .write          = dac960_user_command_proc_write,
6573 };
6574
6575 /*
6576   DAC960_CreateProcEntries creates the /proc/rd/... entries for the
6577   DAC960 Driver.
6578 */
6579
6580 static void DAC960_CreateProcEntries(DAC960_Controller_T *Controller)
6581 {
6582         struct proc_dir_entry *StatusProcEntry;
6583         struct proc_dir_entry *ControllerProcEntry;
6584         struct proc_dir_entry *UserCommandProcEntry;
6585
6586         if (DAC960_ProcDirectoryEntry == NULL) {
6587                 DAC960_ProcDirectoryEntry = proc_mkdir("rd", NULL);
6588                 StatusProcEntry = proc_create("status", 0,
6589                                            DAC960_ProcDirectoryEntry,
6590                                            &dac960_proc_fops);
6591         }
6592
6593       sprintf(Controller->ControllerName, "c%d", Controller->ControllerNumber);
6594       ControllerProcEntry = proc_mkdir(Controller->ControllerName,
6595                                        DAC960_ProcDirectoryEntry);
6596       proc_create_data("initial_status", 0, ControllerProcEntry, &dac960_initial_status_proc_fops, Controller);
6597       proc_create_data("current_status", 0, ControllerProcEntry, &dac960_current_status_proc_fops, Controller);
6598       UserCommandProcEntry = proc_create_data("user_command", S_IWUSR | S_IRUSR, ControllerProcEntry, &dac960_user_command_proc_fops, Controller);
6599       Controller->ControllerProcEntry = ControllerProcEntry;
6600 }
6601
6602
6603 /*
6604   DAC960_DestroyProcEntries destroys the /proc/rd/... entries for the
6605   DAC960 Driver.
6606 */
6607
6608 static void DAC960_DestroyProcEntries(DAC960_Controller_T *Controller)
6609 {
6610       if (Controller->ControllerProcEntry == NULL)
6611               return;
6612       remove_proc_entry("initial_status", Controller->ControllerProcEntry);
6613       remove_proc_entry("current_status", Controller->ControllerProcEntry);
6614       remove_proc_entry("user_command", Controller->ControllerProcEntry);
6615       remove_proc_entry(Controller->ControllerName, DAC960_ProcDirectoryEntry);
6616       Controller->ControllerProcEntry = NULL;
6617 }
6618
6619 #ifdef DAC960_GAM_MINOR
6620
6621 /*
6622  * DAC960_gam_ioctl is the ioctl function for performing RAID operations.
6623 */
6624
6625 static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
6626                                                 unsigned long Argument)
6627 {
6628   long ErrorCode = 0;
6629   if (!capable(CAP_SYS_ADMIN)) return -EACCES;
6630
6631   mutex_lock(&DAC960_mutex);
6632   switch (Request)
6633     {
6634     case DAC960_IOCTL_GET_CONTROLLER_COUNT:
6635       ErrorCode = DAC960_ControllerCount;
6636       break;
6637     case DAC960_IOCTL_GET_CONTROLLER_INFO:
6638       {
6639         DAC960_ControllerInfo_T __user *UserSpaceControllerInfo =
6640           (DAC960_ControllerInfo_T __user *) Argument;
6641         DAC960_ControllerInfo_T ControllerInfo;
6642         DAC960_Controller_T *Controller;
6643         int ControllerNumber;
6644         if (UserSpaceControllerInfo == NULL)
6645                 ErrorCode = -EINVAL;
6646         else ErrorCode = get_user(ControllerNumber,
6647                              &UserSpaceControllerInfo->ControllerNumber);
6648         if (ErrorCode != 0)
6649                 break;
6650         ErrorCode = -ENXIO;
6651         if (ControllerNumber < 0 ||
6652             ControllerNumber > DAC960_ControllerCount - 1) {
6653           break;
6654         }
6655         Controller = DAC960_Controllers[ControllerNumber];
6656         if (Controller == NULL)
6657                 break;
6658         memset(&ControllerInfo, 0, sizeof(DAC960_ControllerInfo_T));
6659         ControllerInfo.ControllerNumber = ControllerNumber;
6660         ControllerInfo.FirmwareType = Controller->FirmwareType;
6661         ControllerInfo.Channels = Controller->Channels;
6662         ControllerInfo.Targets = Controller->Targets;
6663         ControllerInfo.PCI_Bus = Controller->Bus;
6664         ControllerInfo.PCI_Device = Controller->Device;
6665         ControllerInfo.PCI_Function = Controller->Function;
6666         ControllerInfo.IRQ_Channel = Controller->IRQ_Channel;
6667         ControllerInfo.PCI_Address = Controller->PCI_Address;
6668         strcpy(ControllerInfo.ModelName, Controller->ModelName);
6669         strcpy(ControllerInfo.FirmwareVersion, Controller->FirmwareVersion);
6670         ErrorCode = (copy_to_user(UserSpaceControllerInfo, &ControllerInfo,
6671                              sizeof(DAC960_ControllerInfo_T)) ? -EFAULT : 0);
6672         break;
6673       }
6674     case DAC960_IOCTL_V1_EXECUTE_COMMAND:
6675       {
6676         DAC960_V1_UserCommand_T __user *UserSpaceUserCommand =
6677           (DAC960_V1_UserCommand_T __user *) Argument;
6678         DAC960_V1_UserCommand_T UserCommand;
6679         DAC960_Controller_T *Controller;
6680         DAC960_Command_T *Command = NULL;
6681         DAC960_V1_CommandOpcode_T CommandOpcode;
6682         DAC960_V1_CommandStatus_T CommandStatus;
6683         DAC960_V1_DCDB_T DCDB;
6684         DAC960_V1_DCDB_T *DCDB_IOBUF = NULL;
6685         dma_addr_t      DCDB_IOBUFDMA;
6686         unsigned long flags;
6687         int ControllerNumber, DataTransferLength;
6688         unsigned char *DataTransferBuffer = NULL;
6689         dma_addr_t DataTransferBufferDMA;
6690         if (UserSpaceUserCommand == NULL) {
6691                 ErrorCode = -EINVAL;
6692                 break;
6693         }
6694         if (copy_from_user(&UserCommand, UserSpaceUserCommand,
6695                                    sizeof(DAC960_V1_UserCommand_T))) {
6696                 ErrorCode = -EFAULT;
6697                 break;
6698         }
6699         ControllerNumber = UserCommand.ControllerNumber;
6700         ErrorCode = -ENXIO;
6701         if (ControllerNumber < 0 ||
6702             ControllerNumber > DAC960_ControllerCount - 1)
6703                 break;
6704         Controller = DAC960_Controllers[ControllerNumber];
6705         if (Controller == NULL)
6706                 break;
6707         ErrorCode = -EINVAL;
6708         if (Controller->FirmwareType != DAC960_V1_Controller)
6709                 break;
6710         CommandOpcode = UserCommand.CommandMailbox.Common.CommandOpcode;
6711         DataTransferLength = UserCommand.DataTransferLength;
6712         if (CommandOpcode & 0x80)
6713                 break;
6714         if (CommandOpcode == DAC960_V1_DCDB)
6715           {
6716             if (copy_from_user(&DCDB, UserCommand.DCDB,
6717                                sizeof(DAC960_V1_DCDB_T))) {
6718                 ErrorCode = -EFAULT;
6719                 break;
6720             }
6721             if (DCDB.Channel >= DAC960_V1_MaxChannels)
6722                         break;
6723             if (!((DataTransferLength == 0 &&
6724                    DCDB.Direction
6725                    == DAC960_V1_DCDB_NoDataTransfer) ||
6726                   (DataTransferLength > 0 &&
6727                    DCDB.Direction
6728                    == DAC960_V1_DCDB_DataTransferDeviceToSystem) ||
6729                   (DataTransferLength < 0 &&
6730                    DCDB.Direction
6731                    == DAC960_V1_DCDB_DataTransferSystemToDevice)))
6732                         break;
6733             if (((DCDB.TransferLengthHigh4 << 16) | DCDB.TransferLength)
6734                 != abs(DataTransferLength))
6735                         break;
6736             DCDB_IOBUF = pci_alloc_consistent(Controller->PCIDevice,
6737                         sizeof(DAC960_V1_DCDB_T), &DCDB_IOBUFDMA);
6738             if (DCDB_IOBUF == NULL) {
6739                         ErrorCode = -ENOMEM;
6740                         break;
6741                 }
6742           }
6743         ErrorCode = -ENOMEM;
6744         if (DataTransferLength > 0)
6745           {
6746             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6747                                 DataTransferLength, &DataTransferBufferDMA);
6748             if (DataTransferBuffer == NULL)
6749                 break;
6750             memset(DataTransferBuffer, 0, DataTransferLength);
6751           }
6752         else if (DataTransferLength < 0)
6753           {
6754             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6755                                 -DataTransferLength, &DataTransferBufferDMA);
6756             if (DataTransferBuffer == NULL)
6757                 break;
6758             if (copy_from_user(DataTransferBuffer,
6759                                UserCommand.DataTransferBuffer,
6760                                -DataTransferLength)) {
6761                 ErrorCode = -EFAULT;
6762                 break;
6763             }
6764           }
6765         if (CommandOpcode == DAC960_V1_DCDB)
6766           {
6767             spin_lock_irqsave(&Controller->queue_lock, flags);
6768             while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6769               DAC960_WaitForCommand(Controller);
6770             while (Controller->V1.DirectCommandActive[DCDB.Channel]
6771                                                      [DCDB.TargetID])
6772               {
6773                 spin_unlock_irq(&Controller->queue_lock);
6774                 __wait_event(Controller->CommandWaitQueue,
6775                              !Controller->V1.DirectCommandActive
6776                                              [DCDB.Channel][DCDB.TargetID]);
6777                 spin_lock_irq(&Controller->queue_lock);
6778               }
6779             Controller->V1.DirectCommandActive[DCDB.Channel]
6780                                               [DCDB.TargetID] = true;
6781             spin_unlock_irqrestore(&Controller->queue_lock, flags);
6782             DAC960_V1_ClearCommand(Command);
6783             Command->CommandType = DAC960_ImmediateCommand;
6784             memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
6785                    sizeof(DAC960_V1_CommandMailbox_T));
6786             Command->V1.CommandMailbox.Type3.BusAddress = DCDB_IOBUFDMA;
6787             DCDB.BusAddress = DataTransferBufferDMA;
6788             memcpy(DCDB_IOBUF, &DCDB, sizeof(DAC960_V1_DCDB_T));
6789           }
6790         else
6791           {
6792             spin_lock_irqsave(&Controller->queue_lock, flags);
6793             while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6794               DAC960_WaitForCommand(Controller);
6795             spin_unlock_irqrestore(&Controller->queue_lock, flags);
6796             DAC960_V1_ClearCommand(Command);
6797             Command->CommandType = DAC960_ImmediateCommand;
6798             memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
6799                    sizeof(DAC960_V1_CommandMailbox_T));
6800             if (DataTransferBuffer != NULL)
6801               Command->V1.CommandMailbox.Type3.BusAddress =
6802                 DataTransferBufferDMA;
6803           }
6804         DAC960_ExecuteCommand(Command);
6805         CommandStatus = Command->V1.CommandStatus;
6806         spin_lock_irqsave(&Controller->queue_lock, flags);
6807         DAC960_DeallocateCommand(Command);
6808         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6809         if (DataTransferLength > 0)
6810           {
6811             if (copy_to_user(UserCommand.DataTransferBuffer,
6812                              DataTransferBuffer, DataTransferLength)) {
6813                 ErrorCode = -EFAULT;
6814                 goto Failure1;
6815             }
6816           }
6817         if (CommandOpcode == DAC960_V1_DCDB)
6818           {
6819             /*
6820               I don't believe Target or Channel in the DCDB_IOBUF
6821               should be any different from the contents of DCDB.
6822              */
6823             Controller->V1.DirectCommandActive[DCDB.Channel]
6824                                               [DCDB.TargetID] = false;
6825             if (copy_to_user(UserCommand.DCDB, DCDB_IOBUF,
6826                              sizeof(DAC960_V1_DCDB_T))) {
6827                 ErrorCode = -EFAULT;
6828                 goto Failure1;
6829             }
6830           }
6831         ErrorCode = CommandStatus;
6832       Failure1:
6833         if (DataTransferBuffer != NULL)
6834           pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
6835                         DataTransferBuffer, DataTransferBufferDMA);
6836         if (DCDB_IOBUF != NULL)
6837           pci_free_consistent(Controller->PCIDevice, sizeof(DAC960_V1_DCDB_T),
6838                         DCDB_IOBUF, DCDB_IOBUFDMA);
6839         break;
6840       }
6841     case DAC960_IOCTL_V2_EXECUTE_COMMAND:
6842       {
6843         DAC960_V2_UserCommand_T __user *UserSpaceUserCommand =
6844           (DAC960_V2_UserCommand_T __user *) Argument;
6845         DAC960_V2_UserCommand_T UserCommand;
6846         DAC960_Controller_T *Controller;
6847         DAC960_Command_T *Command = NULL;
6848         DAC960_V2_CommandMailbox_T *CommandMailbox;
6849         DAC960_V2_CommandStatus_T CommandStatus;
6850         unsigned long flags;
6851         int ControllerNumber, DataTransferLength;
6852         int DataTransferResidue, RequestSenseLength;
6853         unsigned char *DataTransferBuffer = NULL;
6854         dma_addr_t DataTransferBufferDMA;
6855         unsigned char *RequestSenseBuffer = NULL;
6856         dma_addr_t RequestSenseBufferDMA;
6857
6858         ErrorCode = -EINVAL;
6859         if (UserSpaceUserCommand == NULL)
6860                 break;
6861         if (copy_from_user(&UserCommand, UserSpaceUserCommand,
6862                            sizeof(DAC960_V2_UserCommand_T))) {
6863                 ErrorCode = -EFAULT;
6864                 break;
6865         }
6866         ErrorCode = -ENXIO;
6867         ControllerNumber = UserCommand.ControllerNumber;
6868         if (ControllerNumber < 0 ||
6869             ControllerNumber > DAC960_ControllerCount - 1)
6870                 break;
6871         Controller = DAC960_Controllers[ControllerNumber];
6872         if (Controller == NULL)
6873                 break;
6874         if (Controller->FirmwareType != DAC960_V2_Controller){
6875                 ErrorCode = -EINVAL;
6876                 break;
6877         }
6878         DataTransferLength = UserCommand.DataTransferLength;
6879         ErrorCode = -ENOMEM;
6880         if (DataTransferLength > 0)
6881           {
6882             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6883                                 DataTransferLength, &DataTransferBufferDMA);
6884             if (DataTransferBuffer == NULL)
6885                 break;
6886             memset(DataTransferBuffer, 0, DataTransferLength);
6887           }
6888         else if (DataTransferLength < 0)
6889           {
6890             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6891                                 -DataTransferLength, &DataTransferBufferDMA);
6892             if (DataTransferBuffer == NULL)
6893                 break;
6894             if (copy_from_user(DataTransferBuffer,
6895                                UserCommand.DataTransferBuffer,
6896                                -DataTransferLength)) {
6897                 ErrorCode = -EFAULT;
6898                 goto Failure2;
6899             }
6900           }
6901         RequestSenseLength = UserCommand.RequestSenseLength;
6902         if (RequestSenseLength > 0)
6903           {
6904             RequestSenseBuffer = pci_alloc_consistent(Controller->PCIDevice,
6905                         RequestSenseLength, &RequestSenseBufferDMA);
6906             if (RequestSenseBuffer == NULL)
6907               {
6908                 ErrorCode = -ENOMEM;
6909                 goto Failure2;
6910               }
6911             memset(RequestSenseBuffer, 0, RequestSenseLength);
6912           }
6913         spin_lock_irqsave(&Controller->queue_lock, flags);
6914         while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6915           DAC960_WaitForCommand(Controller);
6916         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6917         DAC960_V2_ClearCommand(Command);
6918         Command->CommandType = DAC960_ImmediateCommand;
6919         CommandMailbox = &Command->V2.CommandMailbox;
6920         memcpy(CommandMailbox, &UserCommand.CommandMailbox,
6921                sizeof(DAC960_V2_CommandMailbox_T));
6922         CommandMailbox->Common.CommandControlBits
6923                               .AdditionalScatterGatherListMemory = false;
6924         CommandMailbox->Common.CommandControlBits
6925                               .NoAutoRequestSense = true;
6926         CommandMailbox->Common.DataTransferSize = 0;
6927         CommandMailbox->Common.DataTransferPageNumber = 0;
6928         memset(&CommandMailbox->Common.DataTransferMemoryAddress, 0,
6929                sizeof(DAC960_V2_DataTransferMemoryAddress_T));
6930         if (DataTransferLength != 0)
6931           {
6932             if (DataTransferLength > 0)
6933               {
6934                 CommandMailbox->Common.CommandControlBits
6935                                       .DataTransferControllerToHost = true;
6936                 CommandMailbox->Common.DataTransferSize = DataTransferLength;
6937               }
6938             else
6939               {
6940                 CommandMailbox->Common.CommandControlBits
6941                                       .DataTransferControllerToHost = false;
6942                 CommandMailbox->Common.DataTransferSize = -DataTransferLength;
6943               }
6944             CommandMailbox->Common.DataTransferMemoryAddress
6945                                   .ScatterGatherSegments[0]
6946                                   .SegmentDataPointer = DataTransferBufferDMA;
6947             CommandMailbox->Common.DataTransferMemoryAddress
6948                                   .ScatterGatherSegments[0]
6949                                   .SegmentByteCount =
6950               CommandMailbox->Common.DataTransferSize;
6951           }
6952         if (RequestSenseLength > 0)
6953           {
6954             CommandMailbox->Common.CommandControlBits
6955                                   .NoAutoRequestSense = false;
6956             CommandMailbox->Common.RequestSenseSize = RequestSenseLength;
6957             CommandMailbox->Common.RequestSenseBusAddress =
6958                                                         RequestSenseBufferDMA;
6959           }
6960         DAC960_ExecuteCommand(Command);
6961         CommandStatus = Command->V2.CommandStatus;
6962         RequestSenseLength = Command->V2.RequestSenseLength;
6963         DataTransferResidue = Command->V2.DataTransferResidue;
6964         spin_lock_irqsave(&Controller->queue_lock, flags);
6965         DAC960_DeallocateCommand(Command);
6966         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6967         if (RequestSenseLength > UserCommand.RequestSenseLength)
6968           RequestSenseLength = UserCommand.RequestSenseLength;
6969         if (copy_to_user(&UserSpaceUserCommand->DataTransferLength,
6970                                  &DataTransferResidue,
6971                                  sizeof(DataTransferResidue))) {
6972                 ErrorCode = -EFAULT;
6973                 goto Failure2;
6974         }
6975         if (copy_to_user(&UserSpaceUserCommand->RequestSenseLength,
6976                          &RequestSenseLength, sizeof(RequestSenseLength))) {
6977                 ErrorCode = -EFAULT;
6978                 goto Failure2;
6979         }
6980         if (DataTransferLength > 0)
6981           {
6982             if (copy_to_user(UserCommand.DataTransferBuffer,
6983                              DataTransferBuffer, DataTransferLength)) {
6984                 ErrorCode = -EFAULT;
6985                 goto Failure2;
6986             }
6987           }
6988         if (RequestSenseLength > 0)
6989           {
6990             if (copy_to_user(UserCommand.RequestSenseBuffer,
6991                              RequestSenseBuffer, RequestSenseLength)) {
6992                 ErrorCode = -EFAULT;
6993                 goto Failure2;
6994             }
6995           }
6996         ErrorCode = CommandStatus;
6997       Failure2:
6998           pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
6999                 DataTransferBuffer, DataTransferBufferDMA);
7000         if (RequestSenseBuffer != NULL)
7001           pci_free_consistent(Controller->PCIDevice, RequestSenseLength,
7002                 RequestSenseBuffer, RequestSenseBufferDMA);
7003         break;
7004       }
7005     case DAC960_IOCTL_V2_GET_HEALTH_STATUS:
7006       {
7007         DAC960_V2_GetHealthStatus_T __user *UserSpaceGetHealthStatus =
7008           (DAC960_V2_GetHealthStatus_T __user *) Argument;
7009         DAC960_V2_GetHealthStatus_T GetHealthStatus;
7010         DAC960_V2_HealthStatusBuffer_T HealthStatusBuffer;
7011         DAC960_Controller_T *Controller;
7012         int ControllerNumber;
7013         if (UserSpaceGetHealthStatus == NULL) {
7014                 ErrorCode = -EINVAL;
7015                 break;
7016         }
7017         if (copy_from_user(&GetHealthStatus, UserSpaceGetHealthStatus,
7018                            sizeof(DAC960_V2_GetHealthStatus_T))) {
7019                 ErrorCode = -EFAULT;
7020                 break;
7021         }
7022         ErrorCode = -ENXIO;
7023         ControllerNumber = GetHealthStatus.ControllerNumber;
7024         if (ControllerNumber < 0 ||
7025             ControllerNumber > DAC960_ControllerCount - 1)
7026                     break;
7027         Controller = DAC960_Controllers[ControllerNumber];
7028         if (Controller == NULL)
7029                 break;
7030         if (Controller->FirmwareType != DAC960_V2_Controller) {
7031                 ErrorCode = -EINVAL;
7032                 break;
7033         }
7034         if (copy_from_user(&HealthStatusBuffer,
7035                            GetHealthStatus.HealthStatusBuffer,
7036                            sizeof(DAC960_V2_HealthStatusBuffer_T))) {
7037                 ErrorCode = -EFAULT;
7038                 break;
7039         }
7040         while (Controller->V2.HealthStatusBuffer->StatusChangeCounter
7041                == HealthStatusBuffer.StatusChangeCounter &&
7042                Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
7043                == HealthStatusBuffer.NextEventSequenceNumber)
7044           {
7045             interruptible_sleep_on_timeout(&Controller->HealthStatusWaitQueue,
7046                                            DAC960_MonitoringTimerInterval);
7047             if (signal_pending(current)) {
7048                 ErrorCode = -EINTR;
7049                 break;
7050             }
7051           }
7052         if (copy_to_user(GetHealthStatus.HealthStatusBuffer,
7053                          Controller->V2.HealthStatusBuffer,
7054                          sizeof(DAC960_V2_HealthStatusBuffer_T)))
7055                 ErrorCode = -EFAULT;
7056         else
7057                 ErrorCode =  0;
7058       }
7059       default:
7060         ErrorCode = -ENOTTY;
7061     }
7062   mutex_unlock(&DAC960_mutex);
7063   return ErrorCode;
7064 }
7065
7066 static const struct file_operations DAC960_gam_fops = {
7067         .owner          = THIS_MODULE,
7068         .unlocked_ioctl = DAC960_gam_ioctl,
7069         .llseek         = noop_llseek,
7070 };
7071
7072 static struct miscdevice DAC960_gam_dev = {
7073         DAC960_GAM_MINOR,
7074         "dac960_gam",
7075         &DAC960_gam_fops
7076 };
7077
7078 static int DAC960_gam_init(void)
7079 {
7080         int ret;
7081
7082         ret = misc_register(&DAC960_gam_dev);
7083         if (ret)
7084                 printk(KERN_ERR "DAC960_gam: can't misc_register on minor %d\n", DAC960_GAM_MINOR);
7085         return ret;
7086 }
7087
7088 static void DAC960_gam_cleanup(void)
7089 {
7090         misc_deregister(&DAC960_gam_dev);
7091 }
7092
7093 #endif /* DAC960_GAM_MINOR */
7094
7095 static struct DAC960_privdata DAC960_GEM_privdata = {
7096         .HardwareType =         DAC960_GEM_Controller,
7097         .FirmwareType   =       DAC960_V2_Controller,
7098         .InterruptHandler =     DAC960_GEM_InterruptHandler,
7099         .MemoryWindowSize =     DAC960_GEM_RegisterWindowSize,
7100 };
7101
7102
7103 static struct DAC960_privdata DAC960_BA_privdata = {
7104         .HardwareType =         DAC960_BA_Controller,
7105         .FirmwareType   =       DAC960_V2_Controller,
7106         .InterruptHandler =     DAC960_BA_InterruptHandler,
7107         .MemoryWindowSize =     DAC960_BA_RegisterWindowSize,
7108 };
7109
7110 static struct DAC960_privdata DAC960_LP_privdata = {
7111         .HardwareType =         DAC960_LP_Controller,
7112         .FirmwareType   =       DAC960_V2_Controller,
7113         .InterruptHandler =     DAC960_LP_InterruptHandler,
7114         .MemoryWindowSize =     DAC960_LP_RegisterWindowSize,
7115 };
7116
7117 static struct DAC960_privdata DAC960_LA_privdata = {
7118         .HardwareType =         DAC960_LA_Controller,
7119         .FirmwareType   =       DAC960_V1_Controller,
7120         .InterruptHandler =     DAC960_LA_InterruptHandler,
7121         .MemoryWindowSize =     DAC960_LA_RegisterWindowSize,
7122 };
7123
7124 static struct DAC960_privdata DAC960_PG_privdata = {
7125         .HardwareType =         DAC960_PG_Controller,
7126         .FirmwareType   =       DAC960_V1_Controller,
7127         .InterruptHandler =     DAC960_PG_InterruptHandler,
7128         .MemoryWindowSize =     DAC960_PG_RegisterWindowSize,
7129 };
7130
7131 static struct DAC960_privdata DAC960_PD_privdata = {
7132         .HardwareType =         DAC960_PD_Controller,
7133         .FirmwareType   =       DAC960_V1_Controller,
7134         .InterruptHandler =     DAC960_PD_InterruptHandler,
7135         .MemoryWindowSize =     DAC960_PD_RegisterWindowSize,
7136 };
7137
7138 static struct DAC960_privdata DAC960_P_privdata = {
7139         .HardwareType =         DAC960_P_Controller,
7140         .FirmwareType   =       DAC960_V1_Controller,
7141         .InterruptHandler =     DAC960_P_InterruptHandler,
7142         .MemoryWindowSize =     DAC960_PD_RegisterWindowSize,
7143 };
7144
7145 static const struct pci_device_id DAC960_id_table[] = {
7146         {
7147                 .vendor         = PCI_VENDOR_ID_MYLEX,
7148                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_GEM,
7149                 .subvendor      = PCI_VENDOR_ID_MYLEX,
7150                 .subdevice      = PCI_ANY_ID,
7151                 .driver_data    = (unsigned long) &DAC960_GEM_privdata,
7152         },
7153         {
7154                 .vendor         = PCI_VENDOR_ID_MYLEX,
7155                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_BA,
7156                 .subvendor      = PCI_ANY_ID,
7157                 .subdevice      = PCI_ANY_ID,
7158                 .driver_data    = (unsigned long) &DAC960_BA_privdata,
7159         },
7160         {
7161                 .vendor         = PCI_VENDOR_ID_MYLEX,
7162                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_LP,
7163                 .subvendor      = PCI_ANY_ID,
7164                 .subdevice      = PCI_ANY_ID,
7165                 .driver_data    = (unsigned long) &DAC960_LP_privdata,
7166         },
7167         {
7168                 .vendor         = PCI_VENDOR_ID_DEC,
7169                 .device         = PCI_DEVICE_ID_DEC_21285,
7170                 .subvendor      = PCI_VENDOR_ID_MYLEX,
7171                 .subdevice      = PCI_DEVICE_ID_MYLEX_DAC960_LA,
7172                 .driver_data    = (unsigned long) &DAC960_LA_privdata,
7173         },
7174         {
7175                 .vendor         = PCI_VENDOR_ID_MYLEX,
7176                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_PG,
7177                 .subvendor      = PCI_ANY_ID,
7178                 .subdevice      = PCI_ANY_ID,
7179                 .driver_data    = (unsigned long) &DAC960_PG_privdata,
7180         },
7181         {
7182                 .vendor         = PCI_VENDOR_ID_MYLEX,
7183                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_PD,
7184                 .subvendor      = PCI_ANY_ID,
7185                 .subdevice      = PCI_ANY_ID,
7186                 .driver_data    = (unsigned long) &DAC960_PD_privdata,
7187         },
7188         {
7189                 .vendor         = PCI_VENDOR_ID_MYLEX,
7190                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_P,
7191                 .subvendor      = PCI_ANY_ID,
7192                 .subdevice      = PCI_ANY_ID,
7193                 .driver_data    = (unsigned long) &DAC960_P_privdata,
7194         },
7195         {0, },
7196 };
7197
7198 MODULE_DEVICE_TABLE(pci, DAC960_id_table);
7199
7200 static struct pci_driver DAC960_pci_driver = {
7201         .name           = "DAC960",
7202         .id_table       = DAC960_id_table,
7203         .probe          = DAC960_Probe,
7204         .remove         = DAC960_Remove,
7205 };
7206
7207 static int __init DAC960_init_module(void)
7208 {
7209         int ret;
7210
7211         ret =  pci_register_driver(&DAC960_pci_driver);
7212 #ifdef DAC960_GAM_MINOR
7213         if (!ret)
7214                 DAC960_gam_init();
7215 #endif
7216         return ret;
7217 }
7218
7219 static void __exit DAC960_cleanup_module(void)
7220 {
7221         int i;
7222
7223 #ifdef DAC960_GAM_MINOR
7224         DAC960_gam_cleanup();
7225 #endif
7226
7227         for (i = 0; i < DAC960_ControllerCount; i++) {
7228                 DAC960_Controller_T *Controller = DAC960_Controllers[i];
7229                 if (Controller == NULL)
7230                         continue;
7231                 DAC960_FinalizeController(Controller);
7232         }
7233         if (DAC960_ProcDirectoryEntry != NULL) {
7234                 remove_proc_entry("rd/status", NULL);
7235                 remove_proc_entry("rd", NULL);
7236         }
7237         DAC960_ControllerCount = 0;
7238         pci_unregister_driver(&DAC960_pci_driver);
7239 }
7240
7241 module_init(DAC960_init_module);
7242 module_exit(DAC960_cleanup_module);
7243
7244 MODULE_LICENSE("GPL");