git.oblomov.eu Git - linux-2.6/blob - 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                    "2.5.48"
  21 #define DAC960_DriverDate                       "14 May 2006"
  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/interrupt.h>
  35 #include <linux/ioport.h>
  36 #include <linux/mm.h>
  37 #include <linux/slab.h>
  38 #include <linux/proc_fs.h>
  39 #include <linux/reboot.h>
  40 #include <linux/spinlock.h>
  41 #include <linux/timer.h>
  42 #include <linux/pci.h>
  43 #include <linux/init.h>
  44 #include <linux/jiffies.h>
  45 #include <linux/random.h>
  46 #include <asm/io.h>
  47 #include <asm/uaccess.h>
  48 #include "DAC960.h"
  49
  50 #define DAC960_GAM_MINOR        252
  51
  52
  53 static DAC960_Controller_T *DAC960_Controllers[DAC960_MaxControllers];
  54 static int DAC960_ControllerCount;
  55 static struct proc_dir_entry *DAC960_ProcDirectoryEntry;
  56
  57 static long disk_size(DAC960_Controller_T *p, int drive_nr)
  58 {
  59         if (p->FirmwareType == DAC960_V1_Controller) {
  60                 if (drive_nr >= p->LogicalDriveCount)
  61                         return 0;
  62                 return p->V1.LogicalDriveInformation[drive_nr].
  63                         LogicalDriveSize;
  64         } else {
  65                 DAC960_V2_LogicalDeviceInfo_T *i =
  66                         p->V2.LogicalDeviceInformation[drive_nr];
  67                 if (i == NULL)
  68                         return 0;
  69                 return i->ConfigurableDeviceSize;
  70         }
  71 }
  72
  73 static int DAC960_open(struct inode *inode, struct file *file)
  74 {
  75         struct gendisk *disk = inode->i_bdev->bd_disk;
  76         DAC960_Controller_T *p = disk->queue->queuedata;
  77         int drive_nr = (long)disk->private_data;
  78
  79         if (p->FirmwareType == DAC960_V1_Controller) {
  80                 if (p->V1.LogicalDriveInformation[drive_nr].
  81                     LogicalDriveState == DAC960_V1_LogicalDrive_Offline)
  82                         return -ENXIO;
  83         } else {
  84                 DAC960_V2_LogicalDeviceInfo_T *i =
  85                         p->V2.LogicalDeviceInformation[drive_nr];
  86                 if (!i || i->LogicalDeviceState == DAC960_V2_LogicalDevice_Offline)
  87                         return -ENXIO;
  88         }
  89
  90         check_disk_change(inode->i_bdev);
  91
  92         if (!get_capacity(p->disks[drive_nr]))
  93                 return -ENXIO;
  94         return 0;
  95 }
  96
  97 static int DAC960_getgeo(struct block_device *bdev, struct hd_geometry *geo)
  98 {
  99         struct gendisk *disk = bdev->bd_disk;
 100         DAC960_Controller_T *p = disk->queue->queuedata;
 101         int drive_nr = (long)disk->private_data;
 102
 103         if (p->FirmwareType == DAC960_V1_Controller) {
 104                 geo->heads = p->V1.GeometryTranslationHeads;
 105                 geo->sectors = p->V1.GeometryTranslationSectors;
 106                 geo->cylinders = p->V1.LogicalDriveInformation[drive_nr].
 107                         LogicalDriveSize / (geo->heads * geo->sectors);
 108         } else {
 109                 DAC960_V2_LogicalDeviceInfo_T *i =
 110                         p->V2.LogicalDeviceInformation[drive_nr];
 111                 switch (i->DriveGeometry) {
 112                 case DAC960_V2_Geometry_128_32:
 113                         geo->heads = 128;
 114                         geo->sectors = 32;
 115                         break;
 116                 case DAC960_V2_Geometry_255_63:
 117                         geo->heads = 255;
 118                         geo->sectors = 63;
 119                         break;
 120                 default:
 121                         DAC960_Error("Illegal Logical Device Geometry %d\n",
 122                                         p, i->DriveGeometry);
 123                         return -EINVAL;
 124                 }
 125
 126                 geo->cylinders = i->ConfigurableDeviceSize /
 127                         (geo->heads * geo->sectors);
 128         }
 129
 130         return 0;
 131 }
 132
 133 static int DAC960_media_changed(struct gendisk *disk)
 134 {
 135         DAC960_Controller_T *p = disk->queue->queuedata;
 136         int drive_nr = (long)disk->private_data;
 137
 138         if (!p->LogicalDriveInitiallyAccessible[drive_nr])
 139                 return 1;
 140         return 0;
 141 }
 142
 143 static int DAC960_revalidate_disk(struct gendisk *disk)
 144 {
 145         DAC960_Controller_T *p = disk->queue->queuedata;
 146         int unit = (long)disk->private_data;
 147
 148         set_capacity(disk, disk_size(p, unit));
 149         return 0;
 150 }
 151
 152 static struct block_device_operations DAC960_BlockDeviceOperations = {
 153         .owner                  = THIS_MODULE,
 154         .open                   = DAC960_open,
 155         .getgeo                 = DAC960_getgeo,
 156         .media_changed          = DAC960_media_changed,
 157         .revalidate_disk        = DAC960_revalidate_disk,
 158 };
 159
 160
 161 /*
 162   DAC960_AnnounceDriver announces the Driver Version and Date, Author's Name,
 163   Copyright Notice, and Electronic Mail Address.
 164 */
 165
 166 static void DAC960_AnnounceDriver(DAC960_Controller_T *Controller)
 167 {
 168   DAC960_Announce("***** DAC960 RAID Driver Version "
 169                   DAC960_DriverVersion " of "
 170                   DAC960_DriverDate " *****\n", Controller);
 171   DAC960_Announce("Copyright 1998-2001 by Leonard N. Zubkoff "
 172                   "<lnz@dandelion.com>\n", Controller);
 173 }
 174
 175
 176 /*
 177   DAC960_Failure prints a standardized error message, and then returns false.
 178 */
 179
 180 static bool DAC960_Failure(DAC960_Controller_T *Controller,
 181                               unsigned char *ErrorMessage)
 182 {
 183   DAC960_Error("While configuring DAC960 PCI RAID Controller at\n",
 184                Controller);
 185   if (Controller->IO_Address == 0)
 186     DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
 187                  "PCI Address 0x%X\n", Controller,
 188                  Controller->Bus, Controller->Device,
 189                  Controller->Function, Controller->PCI_Address);
 190   else DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
 191                     "0x%X PCI Address 0x%X\n", Controller,
 192                     Controller->Bus, Controller->Device,
 193                     Controller->Function, Controller->IO_Address,
 194                     Controller->PCI_Address);
 195   DAC960_Error("%s FAILED - DETACHING\n", Controller, ErrorMessage);
 196   return false;
 197 }
 198
 199 /*
 200   init_dma_loaf() and slice_dma_loaf() are helper functions for
 201   aggregating the dma-mapped memory for a well-known collection of
 202   data structures that are of different lengths.
 203
 204   These routines don't guarantee any alignment.  The caller must
 205   include any space needed for alignment in the sizes of the structures
 206   that are passed in.
 207  */
 208
 209 static bool init_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf,
 210                                                                  size_t len)
 211 {
 212         void *cpu_addr;
 213         dma_addr_t dma_handle;
 214
 215         cpu_addr = pci_alloc_consistent(dev, len, &dma_handle);
 216         if (cpu_addr == NULL)
 217                 return false;
 218
 219         loaf->cpu_free = loaf->cpu_base = cpu_addr;
 220         loaf->dma_free =loaf->dma_base = dma_handle;
 221         loaf->length = len;
 222         memset(cpu_addr, 0, len);
 223         return true;
 224 }
 225
 226 static void *slice_dma_loaf(struct dma_loaf *loaf, size_t len,
 227                                         dma_addr_t *dma_handle)
 228 {
 229         void *cpu_end = loaf->cpu_free + len;
 230         void *cpu_addr = loaf->cpu_free;
 231
 232         BUG_ON(cpu_end > loaf->cpu_base + loaf->length);
 233         *dma_handle = loaf->dma_free;
 234         loaf->cpu_free = cpu_end;
 235         loaf->dma_free += len;
 236         return cpu_addr;
 237 }
 238
 239 static void free_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf_handle)
 240 {
 241         if (loaf_handle->cpu_base != NULL)
 242                 pci_free_consistent(dev, loaf_handle->length,
 243                         loaf_handle->cpu_base, loaf_handle->dma_base);
 244 }
 245
 246
 247 /*
 248   DAC960_CreateAuxiliaryStructures allocates and initializes the auxiliary
 249   data structures for Controller.  It returns true on success and false on
 250   failure.
 251 */
 252
 253 static bool DAC960_CreateAuxiliaryStructures(DAC960_Controller_T *Controller)
 254 {
 255   int CommandAllocationLength, CommandAllocationGroupSize;
 256   int CommandsRemaining = 0, CommandIdentifier, CommandGroupByteCount;
 257   void *AllocationPointer = NULL;
 258   void *ScatterGatherCPU = NULL;
 259   dma_addr_t ScatterGatherDMA;
 260   struct pci_pool *ScatterGatherPool;
 261   void *RequestSenseCPU = NULL;
 262   dma_addr_t RequestSenseDMA;
 263   struct pci_pool *RequestSensePool = NULL;
 264
 265   if (Controller->FirmwareType == DAC960_V1_Controller)
 266     {
 267       CommandAllocationLength = offsetof(DAC960_Command_T, V1.EndMarker);
 268       CommandAllocationGroupSize = DAC960_V1_CommandAllocationGroupSize;
 269       ScatterGatherPool = pci_pool_create("DAC960_V1_ScatterGather",
 270                 Controller->PCIDevice,
 271         DAC960_V1_ScatterGatherLimit * sizeof(DAC960_V1_ScatterGatherSegment_T),
 272         sizeof(DAC960_V1_ScatterGatherSegment_T), 0);
 273       if (ScatterGatherPool == NULL)
 274             return DAC960_Failure(Controller,
 275                         "AUXILIARY STRUCTURE CREATION (SG)");
 276       Controller->ScatterGatherPool = ScatterGatherPool;
 277     }
 278   else
 279     {
 280       CommandAllocationLength = offsetof(DAC960_Command_T, V2.EndMarker);
 281       CommandAllocationGroupSize = DAC960_V2_CommandAllocationGroupSize;
 282       ScatterGatherPool = pci_pool_create("DAC960_V2_ScatterGather",
 283                 Controller->PCIDevice,
 284         DAC960_V2_ScatterGatherLimit * sizeof(DAC960_V2_ScatterGatherSegment_T),
 285         sizeof(DAC960_V2_ScatterGatherSegment_T), 0);
 286       if (ScatterGatherPool == NULL)
 287             return DAC960_Failure(Controller,
 288                         "AUXILIARY STRUCTURE CREATION (SG)");
 289       RequestSensePool = pci_pool_create("DAC960_V2_RequestSense",
 290                 Controller->PCIDevice, sizeof(DAC960_SCSI_RequestSense_T),
 291                 sizeof(int), 0);
 292       if (RequestSensePool == NULL) {
 293             pci_pool_destroy(ScatterGatherPool);
 294             return DAC960_Failure(Controller,
 295                         "AUXILIARY STRUCTURE CREATION (SG)");
 296       }
 297       Controller->ScatterGatherPool = ScatterGatherPool;
 298       Controller->V2.RequestSensePool = RequestSensePool;
 299     }
 300   Controller->CommandAllocationGroupSize = CommandAllocationGroupSize;
 301   Controller->FreeCommands = NULL;
 302   for (CommandIdentifier = 1;
 303        CommandIdentifier <= Controller->DriverQueueDepth;
 304        CommandIdentifier++)
 305     {
 306       DAC960_Command_T *Command;
 307       if (--CommandsRemaining <= 0)
 308         {
 309           CommandsRemaining =
 310                 Controller->DriverQueueDepth - CommandIdentifier + 1;
 311           if (CommandsRemaining > CommandAllocationGroupSize)
 312                 CommandsRemaining = CommandAllocationGroupSize;
 313           CommandGroupByteCount =
 314                 CommandsRemaining * CommandAllocationLength;
 315           AllocationPointer = kzalloc(CommandGroupByteCount, GFP_ATOMIC);
 316           if (AllocationPointer == NULL)
 317                 return DAC960_Failure(Controller,
 318                                         "AUXILIARY STRUCTURE CREATION");
 319          }
 320       Command = (DAC960_Command_T *) AllocationPointer;
 321       AllocationPointer += CommandAllocationLength;
 322       Command->CommandIdentifier = CommandIdentifier;
 323       Command->Controller = Controller;
 324       Command->Next = Controller->FreeCommands;
 325       Controller->FreeCommands = Command;
 326       Controller->Commands[CommandIdentifier-1] = Command;
 327       ScatterGatherCPU = pci_pool_alloc(ScatterGatherPool, GFP_ATOMIC,
 328                                                         &ScatterGatherDMA);
 329       if (ScatterGatherCPU == NULL)
 330           return DAC960_Failure(Controller, "AUXILIARY STRUCTURE CREATION");
 331
 332       if (RequestSensePool != NULL) {
 333           RequestSenseCPU = pci_pool_alloc(RequestSensePool, GFP_ATOMIC,
 334                                                 &RequestSenseDMA);
 335           if (RequestSenseCPU == NULL) {
 336                 pci_pool_free(ScatterGatherPool, ScatterGatherCPU,
 337                                 ScatterGatherDMA);
 338                 return DAC960_Failure(Controller,
 339                                         "AUXILIARY STRUCTURE CREATION");
 340           }
 341         }
 342      if (Controller->FirmwareType == DAC960_V1_Controller) {
 343         Command->cmd_sglist = Command->V1.ScatterList;
 344         Command->V1.ScatterGatherList =
 345                 (DAC960_V1_ScatterGatherSegment_T *)ScatterGatherCPU;
 346         Command->V1.ScatterGatherListDMA = ScatterGatherDMA;
 347       } else {
 348         Command->cmd_sglist = Command->V2.ScatterList;
 349         Command->V2.ScatterGatherList =
 350                 (DAC960_V2_ScatterGatherSegment_T *)ScatterGatherCPU;
 351         Command->V2.ScatterGatherListDMA = ScatterGatherDMA;
 352         Command->V2.RequestSense =
 353                                 (DAC960_SCSI_RequestSense_T *)RequestSenseCPU;
 354         Command->V2.RequestSenseDMA = RequestSenseDMA;
 355       }
 356     }
 357   return true;
 358 }
 359
 360
 361 /*
 362   DAC960_DestroyAuxiliaryStructures deallocates the auxiliary data
 363   structures for Controller.
 364 */
 365
 366 static void DAC960_DestroyAuxiliaryStructures(DAC960_Controller_T *Controller)
 367 {
 368   int i;
 369   struct pci_pool *ScatterGatherPool = Controller->ScatterGatherPool;
 370   struct pci_pool *RequestSensePool = NULL;
 371   void *ScatterGatherCPU;
 372   dma_addr_t ScatterGatherDMA;
 373   void *RequestSenseCPU;
 374   dma_addr_t RequestSenseDMA;
 375   DAC960_Command_T *CommandGroup = NULL;
 376
 377
 378   if (Controller->FirmwareType == DAC960_V2_Controller)
 379         RequestSensePool = Controller->V2.RequestSensePool;
 380
 381   Controller->FreeCommands = NULL;
 382   for (i = 0; i < Controller->DriverQueueDepth; i++)
 383     {
 384       DAC960_Command_T *Command = Controller->Commands[i];
 385
 386       if (Command == NULL)
 387           continue;
 388
 389       if (Controller->FirmwareType == DAC960_V1_Controller) {
 390           ScatterGatherCPU = (void *)Command->V1.ScatterGatherList;
 391           ScatterGatherDMA = Command->V1.ScatterGatherListDMA;
 392           RequestSenseCPU = NULL;
 393           RequestSenseDMA = (dma_addr_t)0;
 394       } else {
 395           ScatterGatherCPU = (void *)Command->V2.ScatterGatherList;
 396           ScatterGatherDMA = Command->V2.ScatterGatherListDMA;
 397           RequestSenseCPU = (void *)Command->V2.RequestSense;
 398           RequestSenseDMA = Command->V2.RequestSenseDMA;
 399       }
 400       if (ScatterGatherCPU != NULL)
 401           pci_pool_free(ScatterGatherPool, ScatterGatherCPU, ScatterGatherDMA);
 402       if (RequestSenseCPU != NULL)
 403           pci_pool_free(RequestSensePool, RequestSenseCPU, RequestSenseDMA);
 404
 405       if ((Command->CommandIdentifier
 406            % Controller->CommandAllocationGroupSize) == 1) {
 407            /*
 408             * We can't free the group of commands until all of the
 409             * request sense and scatter gather dma structures are free.
 410             * Remember the beginning of the group, but don't free it
 411             * until we've reached the beginning of the next group.
 412             */
 413            kfree(CommandGroup);
 414            CommandGroup = Command;
 415       }
 416       Controller->Commands[i] = NULL;
 417     }
 418   kfree(CommandGroup);
 419
 420   if (Controller->CombinedStatusBuffer != NULL)
 421     {
 422       kfree(Controller->CombinedStatusBuffer);
 423       Controller->CombinedStatusBuffer = NULL;
 424       Controller->CurrentStatusBuffer = NULL;
 425     }
 426
 427   if (ScatterGatherPool != NULL)
 428         pci_pool_destroy(ScatterGatherPool);
 429   if (Controller->FirmwareType == DAC960_V1_Controller)
 430         return;
 431
 432   if (RequestSensePool != NULL)
 433         pci_pool_destroy(RequestSensePool);
 434
 435   for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
 436         kfree(Controller->V2.LogicalDeviceInformation[i]);
 437         Controller->V2.LogicalDeviceInformation[i] = NULL;
 438   }
 439
 440   for (i = 0; i < DAC960_V2_MaxPhysicalDevices; i++)
 441     {
 442       kfree(Controller->V2.PhysicalDeviceInformation[i]);
 443       Controller->V2.PhysicalDeviceInformation[i] = NULL;
 444       kfree(Controller->V2.InquiryUnitSerialNumber[i]);
 445       Controller->V2.InquiryUnitSerialNumber[i] = NULL;
 446     }
 447 }
 448
 449
 450 /*
 451   DAC960_V1_ClearCommand clears critical fields of Command for DAC960 V1
 452   Firmware Controllers.
 453 */
 454
 455 static inline void DAC960_V1_ClearCommand(DAC960_Command_T *Command)
 456 {
 457   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 458   memset(CommandMailbox, 0, sizeof(DAC960_V1_CommandMailbox_T));
 459   Command->V1.CommandStatus = 0;
 460 }
 461
 462
 463 /*
 464   DAC960_V2_ClearCommand clears critical fields of Command for DAC960 V2
 465   Firmware Controllers.
 466 */
 467
 468 static inline void DAC960_V2_ClearCommand(DAC960_Command_T *Command)
 469 {
 470   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 471   memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
 472   Command->V2.CommandStatus = 0;
 473 }
 474
 475
 476 /*
 477   DAC960_AllocateCommand allocates a Command structure from Controller's
 478   free list.  During driver initialization, a special initialization command
 479   has been placed on the free list to guarantee that command allocation can
 480   never fail.
 481 */
 482
 483 static inline DAC960_Command_T *DAC960_AllocateCommand(DAC960_Controller_T
 484                                                        *Controller)
 485 {
 486   DAC960_Command_T *Command = Controller->FreeCommands;
 487   if (Command == NULL) return NULL;
 488   Controller->FreeCommands = Command->Next;
 489   Command->Next = NULL;
 490   return Command;
 491 }
 492
 493
 494 /*
 495   DAC960_DeallocateCommand deallocates Command, returning it to Controller's
 496   free list.
 497 */
 498
 499 static inline void DAC960_DeallocateCommand(DAC960_Command_T *Command)
 500 {
 501   DAC960_Controller_T *Controller = Command->Controller;
 502
 503   Command->Request = NULL;
 504   Command->Next = Controller->FreeCommands;
 505   Controller->FreeCommands = Command;
 506 }
 507
 508
 509 /*
 510   DAC960_WaitForCommand waits for a wake_up on Controller's Command Wait Queue.
 511 */
 512
 513 static void DAC960_WaitForCommand(DAC960_Controller_T *Controller)
 514 {
 515   spin_unlock_irq(&Controller->queue_lock);
 516   __wait_event(Controller->CommandWaitQueue, Controller->FreeCommands);
 517   spin_lock_irq(&Controller->queue_lock);
 518 }
 519
 520 /*
 521   DAC960_GEM_QueueCommand queues Command for DAC960 GEM Series Controllers.
 522 */
 523
 524 static void DAC960_GEM_QueueCommand(DAC960_Command_T *Command)
 525 {
 526   DAC960_Controller_T *Controller = Command->Controller;
 527   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 528   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 529   DAC960_V2_CommandMailbox_T *NextCommandMailbox =
 530       Controller->V2.NextCommandMailbox;
 531
 532   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 533   DAC960_GEM_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 534
 535   if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
 536       Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
 537       DAC960_GEM_MemoryMailboxNewCommand(ControllerBaseAddress);
 538
 539   Controller->V2.PreviousCommandMailbox2 =
 540       Controller->V2.PreviousCommandMailbox1;
 541   Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
 542
 543   if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
 544       NextCommandMailbox = Controller->V2.FirstCommandMailbox;
 545
 546   Controller->V2.NextCommandMailbox = NextCommandMailbox;
 547 }
 548
 549 /*
 550   DAC960_BA_QueueCommand queues Command for DAC960 BA Series Controllers.
 551 */
 552
 553 static void DAC960_BA_QueueCommand(DAC960_Command_T *Command)
 554 {
 555   DAC960_Controller_T *Controller = Command->Controller;
 556   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 557   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 558   DAC960_V2_CommandMailbox_T *NextCommandMailbox =
 559     Controller->V2.NextCommandMailbox;
 560   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 561   DAC960_BA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 562   if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
 563       Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
 564     DAC960_BA_MemoryMailboxNewCommand(ControllerBaseAddress);
 565   Controller->V2.PreviousCommandMailbox2 =
 566     Controller->V2.PreviousCommandMailbox1;
 567   Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
 568   if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
 569     NextCommandMailbox = Controller->V2.FirstCommandMailbox;
 570   Controller->V2.NextCommandMailbox = NextCommandMailbox;
 571 }
 572
 573
 574 /*
 575   DAC960_LP_QueueCommand queues Command for DAC960 LP Series Controllers.
 576 */
 577
 578 static void DAC960_LP_QueueCommand(DAC960_Command_T *Command)
 579 {
 580   DAC960_Controller_T *Controller = Command->Controller;
 581   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 582   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 583   DAC960_V2_CommandMailbox_T *NextCommandMailbox =
 584     Controller->V2.NextCommandMailbox;
 585   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 586   DAC960_LP_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 587   if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
 588       Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
 589     DAC960_LP_MemoryMailboxNewCommand(ControllerBaseAddress);
 590   Controller->V2.PreviousCommandMailbox2 =
 591     Controller->V2.PreviousCommandMailbox1;
 592   Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
 593   if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
 594     NextCommandMailbox = Controller->V2.FirstCommandMailbox;
 595   Controller->V2.NextCommandMailbox = NextCommandMailbox;
 596 }
 597
 598
 599 /*
 600   DAC960_LA_QueueCommandDualMode queues Command for DAC960 LA Series
 601   Controllers with Dual Mode Firmware.
 602 */
 603
 604 static void DAC960_LA_QueueCommandDualMode(DAC960_Command_T *Command)
 605 {
 606   DAC960_Controller_T *Controller = Command->Controller;
 607   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 608   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 609   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 610     Controller->V1.NextCommandMailbox;
 611   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 612   DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 613   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 614       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 615     DAC960_LA_MemoryMailboxNewCommand(ControllerBaseAddress);
 616   Controller->V1.PreviousCommandMailbox2 =
 617     Controller->V1.PreviousCommandMailbox1;
 618   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 619   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 620     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 621   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 622 }
 623
 624
 625 /*
 626   DAC960_LA_QueueCommandSingleMode queues Command for DAC960 LA Series
 627   Controllers with Single Mode Firmware.
 628 */
 629
 630 static void DAC960_LA_QueueCommandSingleMode(DAC960_Command_T *Command)
 631 {
 632   DAC960_Controller_T *Controller = Command->Controller;
 633   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 634   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 635   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 636     Controller->V1.NextCommandMailbox;
 637   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 638   DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 639   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 640       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 641     DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
 642   Controller->V1.PreviousCommandMailbox2 =
 643     Controller->V1.PreviousCommandMailbox1;
 644   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 645   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 646     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 647   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 648 }
 649
 650
 651 /*
 652   DAC960_PG_QueueCommandDualMode queues Command for DAC960 PG Series
 653   Controllers with Dual Mode Firmware.
 654 */
 655
 656 static void DAC960_PG_QueueCommandDualMode(DAC960_Command_T *Command)
 657 {
 658   DAC960_Controller_T *Controller = Command->Controller;
 659   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 660   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 661   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 662     Controller->V1.NextCommandMailbox;
 663   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 664   DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 665   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 666       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 667     DAC960_PG_MemoryMailboxNewCommand(ControllerBaseAddress);
 668   Controller->V1.PreviousCommandMailbox2 =
 669     Controller->V1.PreviousCommandMailbox1;
 670   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 671   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 672     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 673   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 674 }
 675
 676
 677 /*
 678   DAC960_PG_QueueCommandSingleMode queues Command for DAC960 PG Series
 679   Controllers with Single Mode Firmware.
 680 */
 681
 682 static void DAC960_PG_QueueCommandSingleMode(DAC960_Command_T *Command)
 683 {
 684   DAC960_Controller_T *Controller = Command->Controller;
 685   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 686   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 687   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 688     Controller->V1.NextCommandMailbox;
 689   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 690   DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 691   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 692       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 693     DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
 694   Controller->V1.PreviousCommandMailbox2 =
 695     Controller->V1.PreviousCommandMailbox1;
 696   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 697   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 698     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 699   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 700 }
 701
 702
 703 /*
 704   DAC960_PD_QueueCommand queues Command for DAC960 PD Series Controllers.
 705 */
 706
 707 static void DAC960_PD_QueueCommand(DAC960_Command_T *Command)
 708 {
 709   DAC960_Controller_T *Controller = Command->Controller;
 710   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 711   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 712   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 713   while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
 714     udelay(1);
 715   DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
 716   DAC960_PD_NewCommand(ControllerBaseAddress);
 717 }
 718
 719
 720 /*
 721   DAC960_P_QueueCommand queues Command for DAC960 P Series Controllers.
 722 */
 723
 724 static void DAC960_P_QueueCommand(DAC960_Command_T *Command)
 725 {
 726   DAC960_Controller_T *Controller = Command->Controller;
 727   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 728   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 729   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 730   switch (CommandMailbox->Common.CommandOpcode)
 731     {
 732     case DAC960_V1_Enquiry:
 733       CommandMailbox->Common.CommandOpcode = DAC960_V1_Enquiry_Old;
 734       break;
 735     case DAC960_V1_GetDeviceState:
 736       CommandMailbox->Common.CommandOpcode = DAC960_V1_GetDeviceState_Old;
 737       break;
 738     case DAC960_V1_Read:
 739       CommandMailbox->Common.CommandOpcode = DAC960_V1_Read_Old;
 740       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 741       break;
 742     case DAC960_V1_Write:
 743       CommandMailbox->Common.CommandOpcode = DAC960_V1_Write_Old;
 744       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 745       break;
 746     case DAC960_V1_ReadWithScatterGather:
 747       CommandMailbox->Common.CommandOpcode =
 748         DAC960_V1_ReadWithScatterGather_Old;
 749       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 750       break;
 751     case DAC960_V1_WriteWithScatterGather:
 752       CommandMailbox->Common.CommandOpcode =
 753         DAC960_V1_WriteWithScatterGather_Old;
 754       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 755       break;
 756     default:
 757       break;
 758     }
 759   while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
 760     udelay(1);
 761   DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
 762   DAC960_PD_NewCommand(ControllerBaseAddress);
 763 }
 764
 765
 766 /*
 767   DAC960_ExecuteCommand executes Command and waits for completion.
 768 */
 769
 770 static void DAC960_ExecuteCommand(DAC960_Command_T *Command)
 771 {
 772   DAC960_Controller_T *Controller = Command->Controller;
 773   DECLARE_COMPLETION_ONSTACK(Completion);
 774   unsigned long flags;
 775   Command->Completion = &Completion;
 776
 777   spin_lock_irqsave(&Controller->queue_lock, flags);
 778   DAC960_QueueCommand(Command);
 779   spin_unlock_irqrestore(&Controller->queue_lock, flags);
 780
 781   if (in_interrupt())
 782           return;
 783   wait_for_completion(&Completion);
 784 }
 785
 786
 787 /*
 788   DAC960_V1_ExecuteType3 executes a DAC960 V1 Firmware Controller Type 3
 789   Command and waits for completion.  It returns true on success and false
 790   on failure.
 791 */
 792
 793 static bool DAC960_V1_ExecuteType3(DAC960_Controller_T *Controller,
 794                                       DAC960_V1_CommandOpcode_T CommandOpcode,
 795                                       dma_addr_t DataDMA)
 796 {
 797   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 798   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 799   DAC960_V1_CommandStatus_T CommandStatus;
 800   DAC960_V1_ClearCommand(Command);
 801   Command->CommandType = DAC960_ImmediateCommand;
 802   CommandMailbox->Type3.CommandOpcode = CommandOpcode;
 803   CommandMailbox->Type3.BusAddress = DataDMA;
 804   DAC960_ExecuteCommand(Command);
 805   CommandStatus = Command->V1.CommandStatus;
 806   DAC960_DeallocateCommand(Command);
 807   return (CommandStatus == DAC960_V1_NormalCompletion);
 808 }
 809
 810
 811 /*
 812   DAC960_V1_ExecuteTypeB executes a DAC960 V1 Firmware Controller Type 3B
 813   Command and waits for completion.  It returns true on success and false
 814   on failure.
 815 */
 816
 817 static bool DAC960_V1_ExecuteType3B(DAC960_Controller_T *Controller,
 818                                        DAC960_V1_CommandOpcode_T CommandOpcode,
 819                                        unsigned char CommandOpcode2,
 820                                        dma_addr_t DataDMA)
 821 {
 822   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 823   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 824   DAC960_V1_CommandStatus_T CommandStatus;
 825   DAC960_V1_ClearCommand(Command);
 826   Command->CommandType = DAC960_ImmediateCommand;
 827   CommandMailbox->Type3B.CommandOpcode = CommandOpcode;
 828   CommandMailbox->Type3B.CommandOpcode2 = CommandOpcode2;
 829   CommandMailbox->Type3B.BusAddress = DataDMA;
 830   DAC960_ExecuteCommand(Command);
 831   CommandStatus = Command->V1.CommandStatus;
 832   DAC960_DeallocateCommand(Command);
 833   return (CommandStatus == DAC960_V1_NormalCompletion);
 834 }
 835
 836
 837 /*
 838   DAC960_V1_ExecuteType3D executes a DAC960 V1 Firmware Controller Type 3D
 839   Command and waits for completion.  It returns true on success and false
 840   on failure.
 841 */
 842
 843 static bool DAC960_V1_ExecuteType3D(DAC960_Controller_T *Controller,
 844                                        DAC960_V1_CommandOpcode_T CommandOpcode,
 845                                        unsigned char Channel,
 846                                        unsigned char TargetID,
 847                                        dma_addr_t DataDMA)
 848 {
 849   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 850   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 851   DAC960_V1_CommandStatus_T CommandStatus;
 852   DAC960_V1_ClearCommand(Command);
 853   Command->CommandType = DAC960_ImmediateCommand;
 854   CommandMailbox->Type3D.CommandOpcode = CommandOpcode;
 855   CommandMailbox->Type3D.Channel = Channel;
 856   CommandMailbox->Type3D.TargetID = TargetID;
 857   CommandMailbox->Type3D.BusAddress = DataDMA;
 858   DAC960_ExecuteCommand(Command);
 859   CommandStatus = Command->V1.CommandStatus;
 860   DAC960_DeallocateCommand(Command);
 861   return (CommandStatus == DAC960_V1_NormalCompletion);
 862 }
 863
 864
 865 /*
 866   DAC960_V2_GeneralInfo executes a DAC960 V2 Firmware General Information
 867   Reading IOCTL Command and waits for completion.  It returns true on success
 868   and false on failure.
 869
 870   Return data in The controller's HealthStatusBuffer, which is dma-able memory
 871 */
 872
 873 static bool DAC960_V2_GeneralInfo(DAC960_Controller_T *Controller)
 874 {
 875   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 876   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 877   DAC960_V2_CommandStatus_T CommandStatus;
 878   DAC960_V2_ClearCommand(Command);
 879   Command->CommandType = DAC960_ImmediateCommand;
 880   CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
 881   CommandMailbox->Common.CommandControlBits
 882                         .DataTransferControllerToHost = true;
 883   CommandMailbox->Common.CommandControlBits
 884                         .NoAutoRequestSense = true;
 885   CommandMailbox->Common.DataTransferSize = sizeof(DAC960_V2_HealthStatusBuffer_T);
 886   CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_GetHealthStatus;
 887   CommandMailbox->Common.DataTransferMemoryAddress
 888                         .ScatterGatherSegments[0]
 889                         .SegmentDataPointer =
 890     Controller->V2.HealthStatusBufferDMA;
 891   CommandMailbox->Common.DataTransferMemoryAddress
 892                         .ScatterGatherSegments[0]
 893                         .SegmentByteCount =
 894     CommandMailbox->Common.DataTransferSize;
 895   DAC960_ExecuteCommand(Command);
 896   CommandStatus = Command->V2.CommandStatus;
 897   DAC960_DeallocateCommand(Command);
 898   return (CommandStatus == DAC960_V2_NormalCompletion);
 899 }
 900
 901
 902 /*
 903   DAC960_V2_ControllerInfo executes a DAC960 V2 Firmware Controller
 904   Information Reading IOCTL Command and waits for completion.  It returns
 905   true on success and false on failure.
 906
 907   Data is returned in the controller's V2.NewControllerInformation dma-able
 908   memory buffer.
 909 */
 910
 911 static bool DAC960_V2_NewControllerInfo(DAC960_Controller_T *Controller)
 912 {
 913   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 914   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 915   DAC960_V2_CommandStatus_T CommandStatus;
 916   DAC960_V2_ClearCommand(Command);
 917   Command->CommandType = DAC960_ImmediateCommand;
 918   CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
 919   CommandMailbox->ControllerInfo.CommandControlBits
 920                                 .DataTransferControllerToHost = true;
 921   CommandMailbox->ControllerInfo.CommandControlBits
 922                                 .NoAutoRequestSense = true;
 923   CommandMailbox->ControllerInfo.DataTransferSize = sizeof(DAC960_V2_ControllerInfo_T);
 924   CommandMailbox->ControllerInfo.ControllerNumber = 0;
 925   CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
 926   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
 927                                 .ScatterGatherSegments[0]
 928                                 .SegmentDataPointer =
 929         Controller->V2.NewControllerInformationDMA;
 930   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
 931                                 .ScatterGatherSegments[0]
 932                                 .SegmentByteCount =
 933     CommandMailbox->ControllerInfo.DataTransferSize;
 934   DAC960_ExecuteCommand(Command);
 935   CommandStatus = Command->V2.CommandStatus;
 936   DAC960_DeallocateCommand(Command);
 937   return (CommandStatus == DAC960_V2_NormalCompletion);
 938 }
 939
 940
 941 /*
 942   DAC960_V2_LogicalDeviceInfo executes a DAC960 V2 Firmware Controller Logical
 943   Device Information Reading IOCTL Command and waits for completion.  It
 944   returns true on success and false on failure.
 945
 946   Data is returned in the controller's V2.NewLogicalDeviceInformation
 947 */
 948
 949 static bool DAC960_V2_NewLogicalDeviceInfo(DAC960_Controller_T *Controller,
 950                                            unsigned short LogicalDeviceNumber)
 951 {
 952   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 953   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 954   DAC960_V2_CommandStatus_T CommandStatus;
 955
 956   DAC960_V2_ClearCommand(Command);
 957   Command->CommandType = DAC960_ImmediateCommand;
 958   CommandMailbox->LogicalDeviceInfo.CommandOpcode =
 959                                 DAC960_V2_IOCTL;
 960   CommandMailbox->LogicalDeviceInfo.CommandControlBits
 961                                    .DataTransferControllerToHost = true;
 962   CommandMailbox->LogicalDeviceInfo.CommandControlBits
 963                                    .NoAutoRequestSense = true;
 964   CommandMailbox->LogicalDeviceInfo.DataTransferSize =
 965                                 sizeof(DAC960_V2_LogicalDeviceInfo_T);
 966   CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
 967     LogicalDeviceNumber;
 968   CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode = DAC960_V2_GetLogicalDeviceInfoValid;
 969   CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
 970                                    .ScatterGatherSegments[0]
 971                                    .SegmentDataPointer =
 972         Controller->V2.NewLogicalDeviceInformationDMA;
 973   CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
 974                                    .ScatterGatherSegments[0]
 975                                    .SegmentByteCount =
 976     CommandMailbox->LogicalDeviceInfo.DataTransferSize;
 977   DAC960_ExecuteCommand(Command);
 978   CommandStatus = Command->V2.CommandStatus;
 979   DAC960_DeallocateCommand(Command);
 980   return (CommandStatus == DAC960_V2_NormalCompletion);
 981 }
 982
 983
 984 /*
 985   DAC960_V2_PhysicalDeviceInfo executes a DAC960 V2 Firmware Controller "Read
 986   Physical Device Information" IOCTL Command and waits for completion.  It
 987   returns true on success and false on failure.
 988
 989   The Channel, TargetID, LogicalUnit arguments should be 0 the first time
 990   this function is called for a given controller.  This will return data
 991   for the "first" device on that controller.  The returned data includes a
 992   Channel, TargetID, LogicalUnit that can be passed in to this routine to
 993   get data for the NEXT device on that controller.
 994
 995   Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
 996   memory buffer.
 997
 998 */
 999
1000 static bool DAC960_V2_NewPhysicalDeviceInfo(DAC960_Controller_T *Controller,
1001                                             unsigned char Channel,
1002                                             unsigned char TargetID,
1003                                             unsigned char LogicalUnit)
1004 {
1005   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
1006   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
1007   DAC960_V2_CommandStatus_T CommandStatus;
1008
1009   DAC960_V2_ClearCommand(Command);
1010   Command->CommandType = DAC960_ImmediateCommand;
1011   CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
1012   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
1013                                     .DataTransferControllerToHost = true;
1014   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
1015                                     .NoAutoRequestSense = true;
1016   CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
1017                                 sizeof(DAC960_V2_PhysicalDeviceInfo_T);
1018   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit = LogicalUnit;
1019   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
1020   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
1021   CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
1022                                         DAC960_V2_GetPhysicalDeviceInfoValid;
1023   CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
1024                                     .ScatterGatherSegments[0]
1025                                     .SegmentDataPointer =
1026                                         Controller->V2.NewPhysicalDeviceInformationDMA;
1027   CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
1028                                     .ScatterGatherSegments[0]
1029                                     .SegmentByteCount =
1030     CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
1031   DAC960_ExecuteCommand(Command);
1032   CommandStatus = Command->V2.CommandStatus;
1033   DAC960_DeallocateCommand(Command);
1034   return (CommandStatus == DAC960_V2_NormalCompletion);
1035 }
1036
1037
1038 static void DAC960_V2_ConstructNewUnitSerialNumber(
1039         DAC960_Controller_T *Controller,
1040         DAC960_V2_CommandMailbox_T *CommandMailbox, int Channel, int TargetID,
1041         int LogicalUnit)
1042 {
1043       CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10_Passthru;
1044       CommandMailbox->SCSI_10.CommandControlBits
1045                              .DataTransferControllerToHost = true;
1046       CommandMailbox->SCSI_10.CommandControlBits
1047                              .NoAutoRequestSense = true;
1048       CommandMailbox->SCSI_10.DataTransferSize =
1049         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
1050       CommandMailbox->SCSI_10.PhysicalDevice.LogicalUnit = LogicalUnit;
1051       CommandMailbox->SCSI_10.PhysicalDevice.TargetID = TargetID;
1052       CommandMailbox->SCSI_10.PhysicalDevice.Channel = Channel;
1053       CommandMailbox->SCSI_10.CDBLength = 6;
1054       CommandMailbox->SCSI_10.SCSI_CDB[0] = 0x12; /* INQUIRY */
1055       CommandMailbox->SCSI_10.SCSI_CDB[1] = 1; /* EVPD = 1 */
1056       CommandMailbox->SCSI_10.SCSI_CDB[2] = 0x80; /* Page Code */
1057       CommandMailbox->SCSI_10.SCSI_CDB[3] = 0; /* Reserved */
1058       CommandMailbox->SCSI_10.SCSI_CDB[4] =
1059         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
1060       CommandMailbox->SCSI_10.SCSI_CDB[5] = 0; /* Control */
1061       CommandMailbox->SCSI_10.DataTransferMemoryAddress
1062                              .ScatterGatherSegments[0]
1063                              .SegmentDataPointer =
1064                 Controller->V2.NewInquiryUnitSerialNumberDMA;
1065       CommandMailbox->SCSI_10.DataTransferMemoryAddress
1066                              .ScatterGatherSegments[0]
1067                              .SegmentByteCount =
1068                 CommandMailbox->SCSI_10.DataTransferSize;
1069 }
1070
1071
1072 /*
1073   DAC960_V2_NewUnitSerialNumber executes an SCSI pass-through
1074   Inquiry command to a SCSI device identified by Channel number,
1075   Target id, Logical Unit Number.  This function Waits for completion
1076   of the command.
1077
1078   The return data includes Unit Serial Number information for the
1079   specified device.
1080
1081   Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
1082   memory buffer.
1083 */
1084
1085 static bool DAC960_V2_NewInquiryUnitSerialNumber(DAC960_Controller_T *Controller,
1086                         int Channel, int TargetID, int LogicalUnit)
1087 {
1088       DAC960_Command_T *Command;
1089       DAC960_V2_CommandMailbox_T *CommandMailbox;
1090       DAC960_V2_CommandStatus_T CommandStatus;
1091
1092       Command = DAC960_AllocateCommand(Controller);
1093       CommandMailbox = &Command->V2.CommandMailbox;
1094       DAC960_V2_ClearCommand(Command);
1095       Command->CommandType = DAC960_ImmediateCommand;
1096
1097       DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
1098                         Channel, TargetID, LogicalUnit);
1099
1100       DAC960_ExecuteCommand(Command);
1101       CommandStatus = Command->V2.CommandStatus;
1102       DAC960_DeallocateCommand(Command);
1103       return (CommandStatus == DAC960_V2_NormalCompletion);
1104 }
1105
1106
1107 /*
1108   DAC960_V2_DeviceOperation executes a DAC960 V2 Firmware Controller Device
1109   Operation IOCTL Command and waits for completion.  It returns true on
1110   success and false on failure.
1111 */
1112
1113 static bool DAC960_V2_DeviceOperation(DAC960_Controller_T *Controller,
1114                                          DAC960_V2_IOCTL_Opcode_T IOCTL_Opcode,
1115                                          DAC960_V2_OperationDevice_T
1116                                            OperationDevice)
1117 {
1118   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
1119   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
1120   DAC960_V2_CommandStatus_T CommandStatus;
1121   DAC960_V2_ClearCommand(Command);
1122   Command->CommandType = DAC960_ImmediateCommand;
1123   CommandMailbox->DeviceOperation.CommandOpcode = DAC960_V2_IOCTL;
1124   CommandMailbox->DeviceOperation.CommandControlBits
1125                                  .DataTransferControllerToHost = true;
1126   CommandMailbox->DeviceOperation.CommandControlBits
1127                                  .NoAutoRequestSense = true;
1128   CommandMailbox->DeviceOperation.IOCTL_Opcode = IOCTL_Opcode;
1129   CommandMailbox->DeviceOperation.OperationDevice = OperationDevice;
1130   DAC960_ExecuteCommand(Command);
1131   CommandStatus = Command->V2.CommandStatus;
1132   DAC960_DeallocateCommand(Command);
1133   return (CommandStatus == DAC960_V2_NormalCompletion);
1134 }
1135
1136
1137 /*
1138   DAC960_V1_EnableMemoryMailboxInterface enables the Memory Mailbox Interface
1139   for DAC960 V1 Firmware Controllers.
1140
1141   PD and P controller types have no memory mailbox, but still need the
1142   other dma mapped memory.
1143 */
1144
1145 static bool DAC960_V1_EnableMemoryMailboxInterface(DAC960_Controller_T
1146                                                       *Controller)
1147 {
1148   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
1149   DAC960_HardwareType_T hw_type = Controller->HardwareType;
1150   struct pci_dev *PCI_Device = Controller->PCIDevice;
1151   struct dma_loaf *DmaPages = &Controller->DmaPages;
1152   size_t DmaPagesSize;
1153   size_t CommandMailboxesSize;
1154   size_t StatusMailboxesSize;
1155
1156   DAC960_V1_CommandMailbox_T *CommandMailboxesMemory;
1157   dma_addr_t CommandMailboxesMemoryDMA;
1158
1159   DAC960_V1_StatusMailbox_T *StatusMailboxesMemory;
1160   dma_addr_t StatusMailboxesMemoryDMA;
1161
1162   DAC960_V1_CommandMailbox_T CommandMailbox;
1163   DAC960_V1_CommandStatus_T CommandStatus;
1164   int TimeoutCounter;
1165   int i;
1166
1167
1168   if (pci_set_dma_mask(Controller->PCIDevice, DAC690_V1_PciDmaMask))
1169         return DAC960_Failure(Controller, "DMA mask out of range");
1170   Controller->BounceBufferLimit = DAC690_V1_PciDmaMask;
1171
1172   if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller)) {
1173     CommandMailboxesSize =  0;
1174     StatusMailboxesSize = 0;
1175   } else {
1176     CommandMailboxesSize =  DAC960_V1_CommandMailboxCount * sizeof(DAC960_V1_CommandMailbox_T);
1177     StatusMailboxesSize = DAC960_V1_StatusMailboxCount * sizeof(DAC960_V1_StatusMailbox_T);
1178   }
1179   DmaPagesSize = CommandMailboxesSize + StatusMailboxesSize +
1180         sizeof(DAC960_V1_DCDB_T) + sizeof(DAC960_V1_Enquiry_T) +
1181         sizeof(DAC960_V1_ErrorTable_T) + sizeof(DAC960_V1_EventLogEntry_T) +
1182         sizeof(DAC960_V1_RebuildProgress_T) +
1183         sizeof(DAC960_V1_LogicalDriveInformationArray_T) +
1184         sizeof(DAC960_V1_BackgroundInitializationStatus_T) +
1185         sizeof(DAC960_V1_DeviceState_T) + sizeof(DAC960_SCSI_Inquiry_T) +
1186         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
1187
1188   if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize))
1189         return false;
1190
1191
1192   if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller))
1193         goto skip_mailboxes;
1194
1195   CommandMailboxesMemory = slice_dma_loaf(DmaPages,
1196                 CommandMailboxesSize, &CommandMailboxesMemoryDMA);
1197
1198   /* These are the base addresses for the command memory mailbox array */
1199   Controller->V1.FirstCommandMailbox = CommandMailboxesMemory;
1200   Controller->V1.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
1201
1202   CommandMailboxesMemory += DAC960_V1_CommandMailboxCount - 1;
1203   Controller->V1.LastCommandMailbox = CommandMailboxesMemory;
1204   Controller->V1.NextCommandMailbox = Controller->V1.FirstCommandMailbox;
1205   Controller->V1.PreviousCommandMailbox1 = Controller->V1.LastCommandMailbox;
1206   Controller->V1.PreviousCommandMailbox2 =
1207                                         Controller->V1.LastCommandMailbox - 1;
1208
1209   /* These are the base addresses for the status memory mailbox array */
1210   StatusMailboxesMemory = slice_dma_loaf(DmaPages,
1211                 StatusMailboxesSize, &StatusMailboxesMemoryDMA);
1212
1213   Controller->V1.FirstStatusMailbox = StatusMailboxesMemory;
1214   Controller->V1.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
1215   StatusMailboxesMemory += DAC960_V1_StatusMailboxCount - 1;
1216   Controller->V1.LastStatusMailbox = StatusMailboxesMemory;
1217   Controller->V1.NextStatusMailbox = Controller->V1.FirstStatusMailbox;
1218
1219 skip_mailboxes:
1220   Controller->V1.MonitoringDCDB = slice_dma_loaf(DmaPages,
1221                 sizeof(DAC960_V1_DCDB_T),
1222                 &Controller->V1.MonitoringDCDB_DMA);
1223
1224   Controller->V1.NewEnquiry = slice_dma_loaf(DmaPages,
1225                 sizeof(DAC960_V1_Enquiry_T),
1226                 &Controller->V1.NewEnquiryDMA);
1227
1228   Controller->V1.NewErrorTable = slice_dma_loaf(DmaPages,
1229                 sizeof(DAC960_V1_ErrorTable_T),
1230                 &Controller->V1.NewErrorTableDMA);
1231
1232   Controller->V1.EventLogEntry = slice_dma_loaf(DmaPages,
1233                 sizeof(DAC960_V1_EventLogEntry_T),
1234                 &Controller->V1.EventLogEntryDMA);
1235
1236   Controller->V1.RebuildProgress = slice_dma_loaf(DmaPages,
1237                 sizeof(DAC960_V1_RebuildProgress_T),
1238                 &Controller->V1.RebuildProgressDMA);
1239
1240   Controller->V1.NewLogicalDriveInformation = slice_dma_loaf(DmaPages,
1241                 sizeof(DAC960_V1_LogicalDriveInformationArray_T),
1242                 &Controller->V1.NewLogicalDriveInformationDMA);
1243
1244   Controller->V1.BackgroundInitializationStatus = slice_dma_loaf(DmaPages,
1245                 sizeof(DAC960_V1_BackgroundInitializationStatus_T),
1246                 &Controller->V1.BackgroundInitializationStatusDMA);
1247
1248   Controller->V1.NewDeviceState = slice_dma_loaf(DmaPages,
1249                 sizeof(DAC960_V1_DeviceState_T),
1250                 &Controller->V1.NewDeviceStateDMA);
1251
1252   Controller->V1.NewInquiryStandardData = slice_dma_loaf(DmaPages,
1253                 sizeof(DAC960_SCSI_Inquiry_T),
1254                 &Controller->V1.NewInquiryStandardDataDMA);
1255
1256   Controller->V1.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
1257                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1258                 &Controller->V1.NewInquiryUnitSerialNumberDMA);
1259
1260   if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller))
1261         return true;
1262
1263   /* Enable the Memory Mailbox Interface. */
1264   Controller->V1.DualModeMemoryMailboxInterface = true;
1265   CommandMailbox.TypeX.CommandOpcode = 0x2B;
1266   CommandMailbox.TypeX.CommandIdentifier = 0;
1267   CommandMailbox.TypeX.CommandOpcode2 = 0x14;
1268   CommandMailbox.TypeX.CommandMailboxesBusAddress =
1269                                 Controller->V1.FirstCommandMailboxDMA;
1270   CommandMailbox.TypeX.StatusMailboxesBusAddress =
1271                                 Controller->V1.FirstStatusMailboxDMA;
1272 #define TIMEOUT_COUNT 1000000
1273
1274   for (i = 0; i < 2; i++)
1275     switch (Controller->HardwareType)
1276       {
1277       case DAC960_LA_Controller:
1278         TimeoutCounter = TIMEOUT_COUNT;
1279         while (--TimeoutCounter >= 0)
1280           {
1281             if (!DAC960_LA_HardwareMailboxFullP(ControllerBaseAddress))
1282               break;
1283             udelay(10);
1284           }
1285         if (TimeoutCounter < 0) return false;
1286         DAC960_LA_WriteHardwareMailbox(ControllerBaseAddress, &CommandMailbox);
1287         DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
1288         TimeoutCounter = TIMEOUT_COUNT;
1289         while (--TimeoutCounter >= 0)
1290           {
1291             if (DAC960_LA_HardwareMailboxStatusAvailableP(
1292                   ControllerBaseAddress))
1293               break;
1294             udelay(10);
1295           }
1296         if (TimeoutCounter < 0) return false;
1297         CommandStatus = DAC960_LA_ReadStatusRegister(ControllerBaseAddress);
1298         DAC960_LA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1299         DAC960_LA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1300         if (CommandStatus == DAC960_V1_NormalCompletion) return true;
1301         Controller->V1.DualModeMemoryMailboxInterface = false;
1302         CommandMailbox.TypeX.CommandOpcode2 = 0x10;
1303         break;
1304       case DAC960_PG_Controller:
1305         TimeoutCounter = TIMEOUT_COUNT;
1306         while (--TimeoutCounter >= 0)
1307           {
1308             if (!DAC960_PG_HardwareMailboxFullP(ControllerBaseAddress))
1309               break;
1310             udelay(10);
1311           }
1312         if (TimeoutCounter < 0) return false;
1313         DAC960_PG_WriteHardwareMailbox(ControllerBaseAddress, &CommandMailbox);
1314         DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
1315
1316         TimeoutCounter = TIMEOUT_COUNT;
1317         while (--TimeoutCounter >= 0)
1318           {
1319             if (DAC960_PG_HardwareMailboxStatusAvailableP(
1320                   ControllerBaseAddress))
1321               break;
1322             udelay(10);
1323           }
1324         if (TimeoutCounter < 0) return false;
1325         CommandStatus = DAC960_PG_ReadStatusRegister(ControllerBaseAddress);
1326         DAC960_PG_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1327         DAC960_PG_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1328         if (CommandStatus == DAC960_V1_NormalCompletion) return true;
1329         Controller->V1.DualModeMemoryMailboxInterface = false;
1330         CommandMailbox.TypeX.CommandOpcode2 = 0x10;
1331         break;
1332       default:
1333         DAC960_Failure(Controller, "Unknown Controller Type\n");
1334         break;
1335       }
1336   return false;
1337 }
1338
1339
1340 /*
1341   DAC960_V2_EnableMemoryMailboxInterface enables the Memory Mailbox Interface
1342   for DAC960 V2 Firmware Controllers.
1343
1344   Aggregate the space needed for the controller's memory mailbox and
1345   the other data structures that will be targets of dma transfers with
1346   the controller.  Allocate a dma-mapped region of memory to hold these
1347   structures.  Then, save CPU pointers and dma_addr_t values to reference
1348   the structures that are contained in that region.
1349 */
1350
1351 static bool DAC960_V2_EnableMemoryMailboxInterface(DAC960_Controller_T
1352                                                       *Controller)
1353 {
1354   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
1355   struct pci_dev *PCI_Device = Controller->PCIDevice;
1356   struct dma_loaf *DmaPages = &Controller->DmaPages;
1357   size_t DmaPagesSize;
1358   size_t CommandMailboxesSize;
1359   size_t StatusMailboxesSize;
1360
1361   DAC960_V2_CommandMailbox_T *CommandMailboxesMemory;
1362   dma_addr_t CommandMailboxesMemoryDMA;
1363
1364   DAC960_V2_StatusMailbox_T *StatusMailboxesMemory;
1365   dma_addr_t StatusMailboxesMemoryDMA;
1366
1367   DAC960_V2_CommandMailbox_T *CommandMailbox;
1368   dma_addr_t    CommandMailboxDMA;
1369   DAC960_V2_CommandStatus_T CommandStatus;
1370
1371   if (pci_set_dma_mask(Controller->PCIDevice, DAC690_V2_PciDmaMask))
1372         return DAC960_Failure(Controller, "DMA mask out of range");
1373   Controller->BounceBufferLimit = DAC690_V2_PciDmaMask;
1374
1375   /* This is a temporary dma mapping, used only in the scope of this function */
1376   CommandMailbox = pci_alloc_consistent(PCI_Device,
1377                 sizeof(DAC960_V2_CommandMailbox_T), &CommandMailboxDMA);
1378   if (CommandMailbox == NULL)
1379           return false;
1380
1381   CommandMailboxesSize = DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T);
1382   StatusMailboxesSize = DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T);
1383   DmaPagesSize =
1384     CommandMailboxesSize + StatusMailboxesSize +
1385     sizeof(DAC960_V2_HealthStatusBuffer_T) +
1386     sizeof(DAC960_V2_ControllerInfo_T) +
1387     sizeof(DAC960_V2_LogicalDeviceInfo_T) +
1388     sizeof(DAC960_V2_PhysicalDeviceInfo_T) +
1389     sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T) +
1390     sizeof(DAC960_V2_Event_T) +
1391     sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
1392
1393   if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize)) {
1394         pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
1395                                         CommandMailbox, CommandMailboxDMA);
1396         return false;
1397   }
1398
1399   CommandMailboxesMemory = slice_dma_loaf(DmaPages,
1400                 CommandMailboxesSize, &CommandMailboxesMemoryDMA);
1401
1402   /* These are the base addresses for the command memory mailbox array */
1403   Controller->V2.FirstCommandMailbox = CommandMailboxesMemory;
1404   Controller->V2.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
1405
1406   CommandMailboxesMemory += DAC960_V2_CommandMailboxCount - 1;
1407   Controller->V2.LastCommandMailbox = CommandMailboxesMemory;
1408   Controller->V2.NextCommandMailbox = Controller->V2.FirstCommandMailbox;
1409   Controller->V2.PreviousCommandMailbox1 = Controller->V2.LastCommandMailbox;
1410   Controller->V2.PreviousCommandMailbox2 =
1411                                         Controller->V2.LastCommandMailbox - 1;
1412
1413   /* These are the base addresses for the status memory mailbox array */
1414   StatusMailboxesMemory = slice_dma_loaf(DmaPages,
1415                 StatusMailboxesSize, &StatusMailboxesMemoryDMA);
1416
1417   Controller->V2.FirstStatusMailbox = StatusMailboxesMemory;
1418   Controller->V2.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
1419   StatusMailboxesMemory += DAC960_V2_StatusMailboxCount - 1;
1420   Controller->V2.LastStatusMailbox = StatusMailboxesMemory;
1421   Controller->V2.NextStatusMailbox = Controller->V2.FirstStatusMailbox;
1422
1423   Controller->V2.HealthStatusBuffer = slice_dma_loaf(DmaPages,
1424                 sizeof(DAC960_V2_HealthStatusBuffer_T),
1425                 &Controller->V2.HealthStatusBufferDMA);
1426
1427   Controller->V2.NewControllerInformation = slice_dma_loaf(DmaPages,
1428                 sizeof(DAC960_V2_ControllerInfo_T),
1429                 &Controller->V2.NewControllerInformationDMA);
1430
1431   Controller->V2.NewLogicalDeviceInformation =  slice_dma_loaf(DmaPages,
1432                 sizeof(DAC960_V2_LogicalDeviceInfo_T),
1433                 &Controller->V2.NewLogicalDeviceInformationDMA);
1434
1435   Controller->V2.NewPhysicalDeviceInformation = slice_dma_loaf(DmaPages,
1436                 sizeof(DAC960_V2_PhysicalDeviceInfo_T),
1437                 &Controller->V2.NewPhysicalDeviceInformationDMA);
1438
1439   Controller->V2.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
1440                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1441                 &Controller->V2.NewInquiryUnitSerialNumberDMA);
1442
1443   Controller->V2.Event = slice_dma_loaf(DmaPages,
1444                 sizeof(DAC960_V2_Event_T),
1445                 &Controller->V2.EventDMA);
1446
1447   Controller->V2.PhysicalToLogicalDevice = slice_dma_loaf(DmaPages,
1448                 sizeof(DAC960_V2_PhysicalToLogicalDevice_T),
1449                 &Controller->V2.PhysicalToLogicalDeviceDMA);
1450
1451   /*
1452     Enable the Memory Mailbox Interface.
1453
1454     I don't know why we can't just use one of the memory mailboxes
1455     we just allocated to do this, instead of using this temporary one.
1456     Try this change later.
1457   */
1458   memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
1459   CommandMailbox->SetMemoryMailbox.CommandIdentifier = 1;
1460   CommandMailbox->SetMemoryMailbox.CommandOpcode = DAC960_V2_IOCTL;
1461   CommandMailbox->SetMemoryMailbox.CommandControlBits.NoAutoRequestSense = true;
1462   CommandMailbox->SetMemoryMailbox.FirstCommandMailboxSizeKB =
1463     (DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T)) >> 10;
1464   CommandMailbox->SetMemoryMailbox.FirstStatusMailboxSizeKB =
1465     (DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T)) >> 10;
1466   CommandMailbox->SetMemoryMailbox.SecondCommandMailboxSizeKB = 0;
1467   CommandMailbox->SetMemoryMailbox.SecondStatusMailboxSizeKB = 0;
1468   CommandMailbox->SetMemoryMailbox.RequestSenseSize = 0;
1469   CommandMailbox->SetMemoryMailbox.IOCTL_Opcode = DAC960_V2_SetMemoryMailbox;
1470   CommandMailbox->SetMemoryMailbox.HealthStatusBufferSizeKB = 1;
1471   CommandMailbox->SetMemoryMailbox.HealthStatusBufferBusAddress =
1472                                         Controller->V2.HealthStatusBufferDMA;
1473   CommandMailbox->SetMemoryMailbox.FirstCommandMailboxBusAddress =
1474                                         Controller->V2.FirstCommandMailboxDMA;
1475   CommandMailbox->SetMemoryMailbox.FirstStatusMailboxBusAddress =
1476                                         Controller->V2.FirstStatusMailboxDMA;
1477   switch (Controller->HardwareType)
1478     {
1479     case DAC960_GEM_Controller:
1480       while (DAC960_GEM_HardwareMailboxFullP(ControllerBaseAddress))
1481         udelay(1);
1482       DAC960_GEM_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1483       DAC960_GEM_HardwareMailboxNewCommand(ControllerBaseAddress);
1484       while (!DAC960_GEM_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1485         udelay(1);
1486       CommandStatus = DAC960_GEM_ReadCommandStatus(ControllerBaseAddress);
1487       DAC960_GEM_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1488       DAC960_GEM_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1489       break;
1490     case DAC960_BA_Controller:
1491       while (DAC960_BA_HardwareMailboxFullP(ControllerBaseAddress))
1492         udelay(1);
1493       DAC960_BA_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1494       DAC960_BA_HardwareMailboxNewCommand(ControllerBaseAddress);
1495       while (!DAC960_BA_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1496         udelay(1);
1497       CommandStatus = DAC960_BA_ReadCommandStatus(ControllerBaseAddress);
1498       DAC960_BA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1499       DAC960_BA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1500       break;
1501     case DAC960_LP_Controller:
1502       while (DAC960_LP_HardwareMailboxFullP(ControllerBaseAddress))
1503         udelay(1);
1504       DAC960_LP_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1505       DAC960_LP_HardwareMailboxNewCommand(ControllerBaseAddress);
1506       while (!DAC960_LP_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1507         udelay(1);
1508       CommandStatus = DAC960_LP_ReadCommandStatus(ControllerBaseAddress);
1509       DAC960_LP_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1510       DAC960_LP_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1511       break;
1512     default:
1513       DAC960_Failure(Controller, "Unknown Controller Type\n");
1514       CommandStatus = DAC960_V2_AbormalCompletion;
1515       break;
1516     }
1517   pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
1518                                         CommandMailbox, CommandMailboxDMA);
1519   return (CommandStatus == DAC960_V2_NormalCompletion);
1520 }
1521
1522
1523 /*
1524   DAC960_V1_ReadControllerConfiguration reads the Configuration Information
1525   from DAC960 V1 Firmware Controllers and initializes the Controller structure.
1526 */
1527
1528 static bool DAC960_V1_ReadControllerConfiguration(DAC960_Controller_T
1529                                                      *Controller)
1530 {
1531   DAC960_V1_Enquiry2_T *Enquiry2;
1532   dma_addr_t Enquiry2DMA;
1533   DAC960_V1_Config2_T *Config2;
1534   dma_addr_t Config2DMA;
1535   int LogicalDriveNumber, Channel, TargetID;
1536   struct dma_loaf local_dma;
1537
1538   if (!init_dma_loaf(Controller->PCIDevice, &local_dma,
1539                 sizeof(DAC960_V1_Enquiry2_T) + sizeof(DAC960_V1_Config2_T)))
1540         return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
1541
1542   Enquiry2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Enquiry2_T), &Enquiry2DMA);
1543   Config2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Config2_T), &Config2DMA);
1544
1545   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry,
1546                               Controller->V1.NewEnquiryDMA)) {
1547     free_dma_loaf(Controller->PCIDevice, &local_dma);
1548     return DAC960_Failure(Controller, "ENQUIRY");
1549   }
1550   memcpy(&Controller->V1.Enquiry, Controller->V1.NewEnquiry,
1551                                                 sizeof(DAC960_V1_Enquiry_T));
1552
1553   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry2, Enquiry2DMA)) {
1554     free_dma_loaf(Controller->PCIDevice, &local_dma);
1555     return DAC960_Failure(Controller, "ENQUIRY2");
1556   }
1557
1558   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_ReadConfig2, Config2DMA)) {
1559     free_dma_loaf(Controller->PCIDevice, &local_dma);
1560     return DAC960_Failure(Controller, "READ CONFIG2");
1561   }
1562
1563   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_GetLogicalDriveInformation,
1564                               Controller->V1.NewLogicalDriveInformationDMA)) {
1565     free_dma_loaf(Controller->PCIDevice, &local_dma);
1566     return DAC960_Failure(Controller, "GET LOGICAL DRIVE INFORMATION");
1567   }
1568   memcpy(&Controller->V1.LogicalDriveInformation,
1569                 Controller->V1.NewLogicalDriveInformation,
1570                 sizeof(DAC960_V1_LogicalDriveInformationArray_T));
1571
1572   for (Channel = 0; Channel < Enquiry2->ActualChannels; Channel++)
1573     for (TargetID = 0; TargetID < Enquiry2->MaxTargets; TargetID++) {
1574       if (!DAC960_V1_ExecuteType3D(Controller, DAC960_V1_GetDeviceState,
1575                                    Channel, TargetID,
1576                                    Controller->V1.NewDeviceStateDMA)) {
1577                 free_dma_loaf(Controller->PCIDevice, &local_dma);
1578                 return DAC960_Failure(Controller, "GET DEVICE STATE");
1579         }
1580         memcpy(&Controller->V1.DeviceState[Channel][TargetID],
1581                 Controller->V1.NewDeviceState, sizeof(DAC960_V1_DeviceState_T));
1582      }
1583   /*
1584     Initialize the Controller Model Name and Full Model Name fields.
1585   */
1586   switch (Enquiry2->HardwareID.SubModel)
1587     {
1588     case DAC960_V1_P_PD_PU:
1589       if (Enquiry2->SCSICapability.BusSpeed == DAC960_V1_Ultra)
1590         strcpy(Controller->ModelName, "DAC960PU");
1591       else strcpy(Controller->ModelName, "DAC960PD");
1592       break;
1593     case DAC960_V1_PL:
1594       strcpy(Controller->ModelName, "DAC960PL");
1595       break;
1596     case DAC960_V1_PG:
1597       strcpy(Controller->ModelName, "DAC960PG");
1598       break;
1599     case DAC960_V1_PJ:
1600       strcpy(Controller->ModelName, "DAC960PJ");
1601       break;
1602     case DAC960_V1_PR:
1603       strcpy(Controller->ModelName, "DAC960PR");
1604       break;
1605     case DAC960_V1_PT:
1606       strcpy(Controller->ModelName, "DAC960PT");
1607       break;
1608     case DAC960_V1_PTL0:
1609       strcpy(Controller->ModelName, "DAC960PTL0");
1610       break;
1611     case DAC960_V1_PRL:
1612       strcpy(Controller->ModelName, "DAC960PRL");
1613       break;
1614     case DAC960_V1_PTL1:
1615       strcpy(Controller->ModelName, "DAC960PTL1");
1616       break;
1617     case DAC960_V1_1164P:
1618       strcpy(Controller->ModelName, "DAC1164P");
1619       break;
1620     default:
1621       free_dma_loaf(Controller->PCIDevice, &local_dma);
1622       return DAC960_Failure(Controller, "MODEL VERIFICATION");
1623     }
1624   strcpy(Controller->FullModelName, "Mylex ");
1625   strcat(Controller->FullModelName, Controller->ModelName);
1626   /*
1627     Initialize the Controller Firmware Version field and verify that it
1628     is a supported firmware version.  The supported firmware versions are:
1629
1630     DAC1164P                5.06 and above
1631     DAC960PTL/PRL/PJ/PG     4.06 and above
1632     DAC960PU/PD/PL          3.51 and above
1633     DAC960PU/PD/PL/P        2.73 and above
1634   */
1635 #if defined(CONFIG_ALPHA)
1636   /*
1637     DEC Alpha machines were often equipped with DAC960 cards that were
1638     OEMed from Mylex, and had their own custom firmware. Version 2.70,
1639     the last custom FW revision to be released by DEC for these older
1640     controllers, appears to work quite well with this driver.
1641
1642     Cards tested successfully were several versions each of the PD and
1643     PU, called by DEC the KZPSC and KZPAC, respectively, and having
1644     the Manufacturer Numbers (from Mylex), usually on a sticker on the
1645     back of the board, of:
1646
1647     KZPSC:  D040347 (1-channel) or D040348 (2-channel) or D040349 (3-channel)
1648     KZPAC:  D040395 (1-channel) or D040396 (2-channel) or D040397 (3-channel)
1649   */
1650 # define FIRMWARE_27X   "2.70"
1651 #else
1652 # define FIRMWARE_27X   "2.73"
1653 #endif
1654
1655   if (Enquiry2->FirmwareID.MajorVersion == 0)
1656     {
1657       Enquiry2->FirmwareID.MajorVersion =
1658         Controller->V1.Enquiry.MajorFirmwareVersion;
1659       Enquiry2->FirmwareID.MinorVersion =
1660         Controller->V1.Enquiry.MinorFirmwareVersion;
1661       Enquiry2->FirmwareID.FirmwareType = '0';
1662       Enquiry2->FirmwareID.TurnID = 0;
1663     }
1664   sprintf(Controller->FirmwareVersion, "%d.%02d-%c-%02d",
1665           Enquiry2->FirmwareID.MajorVersion, Enquiry2->FirmwareID.MinorVersion,
1666           Enquiry2->FirmwareID.FirmwareType, Enquiry2->FirmwareID.TurnID);
1667   if (!((Controller->FirmwareVersion[0] == '5' &&
1668          strcmp(Controller->FirmwareVersion, "5.06") >= 0) ||
1669         (Controller->FirmwareVersion[0] == '4' &&
1670          strcmp(Controller->FirmwareVersion, "4.06") >= 0) ||
1671         (Controller->FirmwareVersion[0] == '3' &&
1672          strcmp(Controller->FirmwareVersion, "3.51") >= 0) ||
1673         (Controller->FirmwareVersion[0] == '2' &&
1674          strcmp(Controller->FirmwareVersion, FIRMWARE_27X) >= 0)))
1675     {
1676       DAC960_Failure(Controller, "FIRMWARE VERSION VERIFICATION");
1677       DAC960_Error("Firmware Version = '%s'\n", Controller,
1678                    Controller->FirmwareVersion);
1679       free_dma_loaf(Controller->PCIDevice, &local_dma);
1680       return false;
1681     }
1682   /*
1683     Initialize the Controller Channels, Targets, Memory Size, and SAF-TE
1684     Enclosure Management Enabled fields.
1685   */
1686   Controller->Channels = Enquiry2->ActualChannels;
1687   Controller->Targets = Enquiry2->MaxTargets;
1688   Controller->MemorySize = Enquiry2->MemorySize >> 20;
1689   Controller->V1.SAFTE_EnclosureManagementEnabled =
1690     (Enquiry2->FaultManagementType == DAC960_V1_SAFTE);
1691   /*
1692     Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
1693     Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
1694     Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
1695     less than the Controller Queue Depth to allow for an automatic drive
1696     rebuild operation.
1697   */
1698   Controller->ControllerQueueDepth = Controller->V1.Enquiry.MaxCommands;
1699   Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
1700   if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
1701     Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
1702   Controller->LogicalDriveCount =
1703     Controller->V1.Enquiry.NumberOfLogicalDrives;
1704   Controller->MaxBlocksPerCommand = Enquiry2->MaxBlocksPerCommand;
1705   Controller->ControllerScatterGatherLimit = Enquiry2->MaxScatterGatherEntries;
1706   Controller->DriverScatterGatherLimit =
1707     Controller->ControllerScatterGatherLimit;
1708   if (Controller->DriverScatterGatherLimit > DAC960_V1_ScatterGatherLimit)
1709     Controller->DriverScatterGatherLimit = DAC960_V1_ScatterGatherLimit;
1710   /*
1711     Initialize the Stripe Size, Segment Size, and Geometry Translation.
1712   */
1713   Controller->V1.StripeSize = Config2->BlocksPerStripe * Config2->BlockFactor
1714                               >> (10 - DAC960_BlockSizeBits);
1715   Controller->V1.SegmentSize = Config2->BlocksPerCacheLine * Config2->BlockFactor
1716                                >> (10 - DAC960_BlockSizeBits);
1717   switch (Config2->DriveGeometry)
1718     {
1719     case DAC960_V1_Geometry_128_32:
1720       Controller->V1.GeometryTranslationHeads = 128;
1721       Controller->V1.GeometryTranslationSectors = 32;
1722       break;
1723     case DAC960_V1_Geometry_255_63:
1724       Controller->V1.GeometryTranslationHeads = 255;
1725       Controller->V1.GeometryTranslationSectors = 63;
1726       break;
1727     default:
1728       free_dma_loaf(Controller->PCIDevice, &local_dma);
1729       return DAC960_Failure(Controller, "CONFIG2 DRIVE GEOMETRY");
1730     }
1731   /*
1732     Initialize the Background Initialization Status.
1733   */
1734   if ((Controller->FirmwareVersion[0] == '4' &&
1735       strcmp(Controller->FirmwareVersion, "4.08") >= 0) ||
1736       (Controller->FirmwareVersion[0] == '5' &&
1737        strcmp(Controller->FirmwareVersion, "5.08") >= 0))
1738     {
1739       Controller->V1.BackgroundInitializationStatusSupported = true;
1740       DAC960_V1_ExecuteType3B(Controller,
1741                               DAC960_V1_BackgroundInitializationControl, 0x20,
1742                               Controller->
1743                                V1.BackgroundInitializationStatusDMA);
1744       memcpy(&Controller->V1.LastBackgroundInitializationStatus,
1745                 Controller->V1.BackgroundInitializationStatus,
1746                 sizeof(DAC960_V1_BackgroundInitializationStatus_T));
1747     }
1748   /*
1749     Initialize the Logical Drive Initially Accessible flag.
1750   */
1751   for (LogicalDriveNumber = 0;
1752        LogicalDriveNumber < Controller->LogicalDriveCount;
1753        LogicalDriveNumber++)
1754     if (Controller->V1.LogicalDriveInformation
1755                        [LogicalDriveNumber].LogicalDriveState !=
1756         DAC960_V1_LogicalDrive_Offline)
1757       Controller->LogicalDriveInitiallyAccessible[LogicalDriveNumber] = true;
1758   Controller->V1.LastRebuildStatus = DAC960_V1_NoRebuildOrCheckInProgress;
1759   free_dma_loaf(Controller->PCIDevice, &local_dma);
1760   return true;
1761 }
1762
1763
1764 /*
1765   DAC960_V2_ReadControllerConfiguration reads the Configuration Information
1766   from DAC960 V2 Firmware Controllers and initializes the Controller structure.
1767 */
1768
1769 static bool DAC960_V2_ReadControllerConfiguration(DAC960_Controller_T
1770                                                      *Controller)
1771 {
1772   DAC960_V2_ControllerInfo_T *ControllerInfo =
1773                 &Controller->V2.ControllerInformation;
1774   unsigned short LogicalDeviceNumber = 0;
1775   int ModelNameLength;
1776
1777   /* Get data into dma-able area, then copy into permanant location */
1778   if (!DAC960_V2_NewControllerInfo(Controller))
1779     return DAC960_Failure(Controller, "GET CONTROLLER INFO");
1780   memcpy(ControllerInfo, Controller->V2.NewControllerInformation,
1781                         sizeof(DAC960_V2_ControllerInfo_T));
1782
1783
1784   if (!DAC960_V2_GeneralInfo(Controller))
1785     return DAC960_Failure(Controller, "GET HEALTH STATUS");
1786
1787   /*
1788     Initialize the Controller Model Name and Full Model Name fields.
1789   */
1790   ModelNameLength = sizeof(ControllerInfo->ControllerName);
1791   if (ModelNameLength > sizeof(Controller->ModelName)-1)
1792     ModelNameLength = sizeof(Controller->ModelName)-1;
1793   memcpy(Controller->ModelName, ControllerInfo->ControllerName,
1794          ModelNameLength);
1795   ModelNameLength--;
1796   while (Controller->ModelName[ModelNameLength] == ' ' ||
1797          Controller->ModelName[ModelNameLength] == '\0')
1798     ModelNameLength--;
1799   Controller->ModelName[++ModelNameLength] = '\0';
1800   strcpy(Controller->FullModelName, "Mylex ");
1801   strcat(Controller->FullModelName, Controller->ModelName);
1802   /*
1803     Initialize the Controller Firmware Version field.
1804   */
1805   sprintf(Controller->FirmwareVersion, "%d.%02d-%02d",
1806           ControllerInfo->FirmwareMajorVersion,
1807           ControllerInfo->FirmwareMinorVersion,
1808           ControllerInfo->FirmwareTurnNumber);
1809   if (ControllerInfo->FirmwareMajorVersion == 6 &&
1810       ControllerInfo->FirmwareMinorVersion == 0 &&
1811       ControllerInfo->FirmwareTurnNumber < 1)
1812     {
1813       DAC960_Info("FIRMWARE VERSION %s DOES NOT PROVIDE THE CONTROLLER\n",
1814                   Controller, Controller->FirmwareVersion);
1815       DAC960_Info("STATUS MONITORING FUNCTIONALITY NEEDED BY THIS DRIVER.\n",
1816                   Controller);
1817       DAC960_Info("PLEASE UPGRADE TO VERSION 6.00-01 OR ABOVE.\n",
1818                   Controller);
1819     }
1820   /*
1821     Initialize the Controller Channels, Targets, and Memory Size.
1822   */
1823   Controller->Channels = ControllerInfo->NumberOfPhysicalChannelsPresent;
1824   Controller->Targets =
1825     ControllerInfo->MaximumTargetsPerChannel
1826                     [ControllerInfo->NumberOfPhysicalChannelsPresent-1];
1827   Controller->MemorySize = ControllerInfo->MemorySizeMB;
1828   /*
1829     Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
1830     Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
1831     Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
1832     less than the Controller Queue Depth to allow for an automatic drive
1833     rebuild operation.
1834   */
1835   Controller->ControllerQueueDepth = ControllerInfo->MaximumParallelCommands;
1836   Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
1837   if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
1838     Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
1839   Controller->LogicalDriveCount = ControllerInfo->LogicalDevicesPresent;
1840   Controller->MaxBlocksPerCommand =
1841     ControllerInfo->MaximumDataTransferSizeInBlocks;
1842   Controller->ControllerScatterGatherLimit =
1843     ControllerInfo->MaximumScatterGatherEntries;
1844   Controller->DriverScatterGatherLimit =
1845     Controller->ControllerScatterGatherLimit;
1846   if (Controller->DriverScatterGatherLimit > DAC960_V2_ScatterGatherLimit)
1847     Controller->DriverScatterGatherLimit = DAC960_V2_ScatterGatherLimit;
1848   /*
1849     Initialize the Logical Device Information.
1850   */
1851   while (true)
1852     {
1853       DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
1854         Controller->V2.NewLogicalDeviceInformation;
1855       DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo;
1856       DAC960_V2_PhysicalDevice_T PhysicalDevice;
1857
1858       if (!DAC960_V2_NewLogicalDeviceInfo(Controller, LogicalDeviceNumber))
1859         break;
1860       LogicalDeviceNumber = NewLogicalDeviceInfo->LogicalDeviceNumber;
1861       if (LogicalDeviceNumber >= DAC960_MaxLogicalDrives) {
1862         DAC960_Error("DAC960: Logical Drive Number %d not supported\n",
1863                        Controller, LogicalDeviceNumber);
1864                 break;
1865       }
1866       if (NewLogicalDeviceInfo->DeviceBlockSizeInBytes != DAC960_BlockSize) {
1867         DAC960_Error("DAC960: Logical Drive Block Size %d not supported\n",
1868               Controller, NewLogicalDeviceInfo->DeviceBlockSizeInBytes);
1869         LogicalDeviceNumber++;
1870         continue;
1871       }
1872       PhysicalDevice.Controller = 0;
1873       PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
1874       PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
1875       PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
1876       Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
1877         PhysicalDevice;
1878       if (NewLogicalDeviceInfo->LogicalDeviceState !=
1879           DAC960_V2_LogicalDevice_Offline)
1880         Controller->LogicalDriveInitiallyAccessible[LogicalDeviceNumber] = true;
1881       LogicalDeviceInfo = kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T),
1882                                    GFP_ATOMIC);
1883       if (LogicalDeviceInfo == NULL)
1884         return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
1885       Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
1886         LogicalDeviceInfo;
1887       memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
1888              sizeof(DAC960_V2_LogicalDeviceInfo_T));
1889       LogicalDeviceNumber++;
1890     }
1891   return true;
1892 }
1893
1894
1895 /*
1896   DAC960_ReportControllerConfiguration reports the Configuration Information
1897   for Controller.
1898 */
1899
1900 static bool DAC960_ReportControllerConfiguration(DAC960_Controller_T
1901                                                     *Controller)
1902 {
1903   DAC960_Info("Configuring Mylex %s PCI RAID Controller\n",
1904               Controller, Controller->ModelName);
1905   DAC960_Info("  Firmware Version: %s, Channels: %d, Memory Size: %dMB\n",
1906               Controller, Controller->FirmwareVersion,
1907               Controller->Channels, Controller->MemorySize);
1908   DAC960_Info("  PCI Bus: %d, Device: %d, Function: %d, I/O Address: ",
1909               Controller, Controller->Bus,
1910               Controller->Device, Controller->Function);
1911   if (Controller->IO_Address == 0)
1912     DAC960_Info("Unassigned\n", Controller);
1913   else DAC960_Info("0x%X\n", Controller, Controller->IO_Address);
1914   DAC960_Info("  PCI Address: 0x%X mapped at 0x%lX, IRQ Channel: %d\n",
1915               Controller, Controller->PCI_Address,
1916               (unsigned long) Controller->BaseAddress,
1917               Controller->IRQ_Channel);
1918   DAC960_Info("  Controller Queue Depth: %d, "
1919               "Maximum Blocks per Command: %d\n",
1920               Controller, Controller->ControllerQueueDepth,
1921               Controller->MaxBlocksPerCommand);
1922   DAC960_Info("  Driver Queue Depth: %d, "
1923               "Scatter/Gather Limit: %d of %d Segments\n",
1924               Controller, Controller->DriverQueueDepth,
1925               Controller->DriverScatterGatherLimit,
1926               Controller->ControllerScatterGatherLimit);
1927   if (Controller->FirmwareType == DAC960_V1_Controller)
1928     {
1929       DAC960_Info("  Stripe Size: %dKB, Segment Size: %dKB, "
1930                   "BIOS Geometry: %d/%d\n", Controller,
1931                   Controller->V1.StripeSize,
1932                   Controller->V1.SegmentSize,
1933                   Controller->V1.GeometryTranslationHeads,
1934                   Controller->V1.GeometryTranslationSectors);
1935       if (Controller->V1.SAFTE_EnclosureManagementEnabled)
1936         DAC960_Info("  SAF-TE Enclosure Management Enabled\n", Controller);
1937     }
1938   return true;
1939 }
1940
1941
1942 /*
1943   DAC960_V1_ReadDeviceConfiguration reads the Device Configuration Information
1944   for DAC960 V1 Firmware Controllers by requesting the SCSI Inquiry and SCSI
1945   Inquiry Unit Serial Number information for each device connected to
1946   Controller.
1947 */
1948
1949 static bool DAC960_V1_ReadDeviceConfiguration(DAC960_Controller_T
1950                                                  *Controller)
1951 {
1952   struct dma_loaf local_dma;
1953
1954   dma_addr_t DCDBs_dma[DAC960_V1_MaxChannels];
1955   DAC960_V1_DCDB_T *DCDBs_cpu[DAC960_V1_MaxChannels];
1956
1957   dma_addr_t SCSI_Inquiry_dma[DAC960_V1_MaxChannels];
1958   DAC960_SCSI_Inquiry_T *SCSI_Inquiry_cpu[DAC960_V1_MaxChannels];
1959
1960   dma_addr_t SCSI_NewInquiryUnitSerialNumberDMA[DAC960_V1_MaxChannels];
1961   DAC960_SCSI_Inquiry_UnitSerialNumber_T *SCSI_NewInquiryUnitSerialNumberCPU[DAC960_V1_MaxChannels];
1962
1963   struct completion Completions[DAC960_V1_MaxChannels];
1964   unsigned long flags;
1965   int Channel, TargetID;
1966
1967   if (!init_dma_loaf(Controller->PCIDevice, &local_dma,
1968                 DAC960_V1_MaxChannels*(sizeof(DAC960_V1_DCDB_T) +
1969                         sizeof(DAC960_SCSI_Inquiry_T) +
1970                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T))))
1971      return DAC960_Failure(Controller,
1972                         "DMA ALLOCATION FAILED IN ReadDeviceConfiguration");
1973
1974   for (Channel = 0; Channel < Controller->Channels; Channel++) {
1975         DCDBs_cpu[Channel] = slice_dma_loaf(&local_dma,
1976                         sizeof(DAC960_V1_DCDB_T), DCDBs_dma + Channel);
1977         SCSI_Inquiry_cpu[Channel] = slice_dma_loaf(&local_dma,
1978                         sizeof(DAC960_SCSI_Inquiry_T),
1979                         SCSI_Inquiry_dma + Channel);
1980         SCSI_NewInquiryUnitSerialNumberCPU[Channel] = slice_dma_loaf(&local_dma,
1981                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1982                         SCSI_NewInquiryUnitSerialNumberDMA + Channel);
1983   }
1984
1985   for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
1986     {
1987       /*
1988        * For each channel, submit a probe for a device on that channel.
1989        * The timeout interval for a device that is present is 10 seconds.
1990        * With this approach, the timeout periods can elapse in parallel
1991        * on each channel.
1992        */
1993       for (Channel = 0; Channel < Controller->Channels; Channel++)
1994         {
1995           dma_addr_t NewInquiryStandardDataDMA = SCSI_Inquiry_dma[Channel];
1996           DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
1997           dma_addr_t DCDB_dma = DCDBs_dma[Channel];
1998           DAC960_Command_T *Command = Controller->Commands[Channel];
1999           struct completion *Completion = &Completions[Channel];
2000
2001           init_completion(Completion);
2002           DAC960_V1_ClearCommand(Command);
2003           Command->CommandType = DAC960_ImmediateCommand;
2004           Command->Completion = Completion;
2005           Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
2006           Command->V1.CommandMailbox.Type3.BusAddress = DCDB_dma;
2007           DCDB->Channel = Channel;
2008           DCDB->TargetID = TargetID;
2009           DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
2010           DCDB->EarlyStatus = false;
2011           DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
2012           DCDB->NoAutomaticRequestSense = false;
2013           DCDB->DisconnectPermitted = true;
2014           DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
2015           DCDB->BusAddress = NewInquiryStandardDataDMA;
2016           DCDB->CDBLength = 6;
2017           DCDB->TransferLengthHigh4 = 0;
2018           DCDB->SenseLength = sizeof(DCDB->SenseData);
2019           DCDB->CDB[0] = 0x12; /* INQUIRY */
2020           DCDB->CDB[1] = 0; /* EVPD = 0 */
2021           DCDB->CDB[2] = 0; /* Page Code */
2022           DCDB->CDB[3] = 0; /* Reserved */
2023           DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
2024           DCDB->CDB[5] = 0; /* Control */
2025
2026           spin_lock_irqsave(&Controller->queue_lock, flags);
2027           DAC960_QueueCommand(Command);
2028           spin_unlock_irqrestore(&Controller->queue_lock, flags);
2029         }
2030       /*
2031        * Wait for the problems submitted in the previous loop
2032        * to complete.  On the probes that are successful,
2033        * get the serial number of the device that was found.
2034        */
2035       for (Channel = 0; Channel < Controller->Channels; Channel++)
2036         {
2037           DAC960_SCSI_Inquiry_T *InquiryStandardData =
2038             &Controller->V1.InquiryStandardData[Channel][TargetID];
2039           DAC960_SCSI_Inquiry_T *NewInquiryStandardData = SCSI_Inquiry_cpu[Channel];
2040           dma_addr_t NewInquiryUnitSerialNumberDMA =
2041                         SCSI_NewInquiryUnitSerialNumberDMA[Channel];
2042           DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
2043                         SCSI_NewInquiryUnitSerialNumberCPU[Channel];
2044           DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2045             &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
2046           DAC960_Command_T *Command = Controller->Commands[Channel];
2047           DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
2048           struct completion *Completion = &Completions[Channel];
2049
2050           wait_for_completion(Completion);
2051
2052           if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
2053             memset(InquiryStandardData, 0, sizeof(DAC960_SCSI_Inquiry_T));
2054             InquiryStandardData->PeripheralDeviceType = 0x1F;
2055             continue;
2056           } else
2057             memcpy(InquiryStandardData, NewInquiryStandardData, sizeof(DAC960_SCSI_Inquiry_T));
2058
2059           /* Preserve Channel and TargetID values from the previous loop */
2060           Command->Completion = Completion;
2061           DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
2062           DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
2063           DCDB->SenseLength = sizeof(DCDB->SenseData);
2064           DCDB->CDB[0] = 0x12; /* INQUIRY */
2065           DCDB->CDB[1] = 1; /* EVPD = 1 */
2066           DCDB->CDB[2] = 0x80; /* Page Code */
2067           DCDB->CDB[3] = 0; /* Reserved */
2068           DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
2069           DCDB->CDB[5] = 0; /* Control */
2070
2071           spin_lock_irqsave(&Controller->queue_lock, flags);
2072           DAC960_QueueCommand(Command);
2073           spin_unlock_irqrestore(&Controller->queue_lock, flags);
2074           wait_for_completion(Completion);
2075
2076           if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
2077                 memset(InquiryUnitSerialNumber, 0,
2078                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2079                 InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
2080           } else
2081                 memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
2082                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2083         }
2084     }
2085     free_dma_loaf(Controller->PCIDevice, &local_dma);
2086   return true;
2087 }
2088
2089
2090 /*
2091   DAC960_V2_ReadDeviceConfiguration reads the Device Configuration Information
2092   for DAC960 V2 Firmware Controllers by requesting the Physical Device
2093   Information and SCSI Inquiry Unit Serial Number information for each
2094   device connected to Controller.
2095 */
2096
2097 static bool DAC960_V2_ReadDeviceConfiguration(DAC960_Controller_T
2098                                                  *Controller)
2099 {
2100   unsigned char Channel = 0, TargetID = 0, LogicalUnit = 0;
2101   unsigned short PhysicalDeviceIndex = 0;
2102
2103   while (true)
2104     {
2105       DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
2106                 Controller->V2.NewPhysicalDeviceInformation;
2107       DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo;
2108       DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
2109                 Controller->V2.NewInquiryUnitSerialNumber;
2110       DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber;
2111
2112       if (!DAC960_V2_NewPhysicalDeviceInfo(Controller, Channel, TargetID, LogicalUnit))
2113           break;
2114
2115       PhysicalDeviceInfo = kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T),
2116                                     GFP_ATOMIC);
2117       if (PhysicalDeviceInfo == NULL)
2118                 return DAC960_Failure(Controller, "PHYSICAL DEVICE ALLOCATION");
2119       Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex] =
2120                 PhysicalDeviceInfo;
2121       memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
2122                 sizeof(DAC960_V2_PhysicalDeviceInfo_T));
2123
2124       InquiryUnitSerialNumber = kmalloc(
2125               sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T), GFP_ATOMIC);
2126       if (InquiryUnitSerialNumber == NULL) {
2127         kfree(PhysicalDeviceInfo);
2128         return DAC960_Failure(Controller, "SERIAL NUMBER ALLOCATION");
2129       }
2130       Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex] =
2131                 InquiryUnitSerialNumber;
2132
2133       Channel = NewPhysicalDeviceInfo->Channel;
2134       TargetID = NewPhysicalDeviceInfo->TargetID;
2135       LogicalUnit = NewPhysicalDeviceInfo->LogicalUnit;
2136
2137       /*
2138          Some devices do NOT have Unit Serial Numbers.
2139          This command fails for them.  But, we still want to
2140          remember those devices are there.  Construct a
2141          UnitSerialNumber structure for the failure case.
2142       */
2143       if (!DAC960_V2_NewInquiryUnitSerialNumber(Controller, Channel, TargetID, LogicalUnit)) {
2144         memset(InquiryUnitSerialNumber, 0,
2145              sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2146         InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
2147       } else
2148         memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
2149                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2150
2151       PhysicalDeviceIndex++;
2152       LogicalUnit++;
2153     }
2154   return true;
2155 }
2156
2157
2158 /*
2159   DAC960_SanitizeInquiryData sanitizes the Vendor, Model, Revision, and
2160   Product Serial Number fields of the Inquiry Standard Data and Inquiry
2161   Unit Serial Number structures.
2162 */
2163
2164 static void DAC960_SanitizeInquiryData(DAC960_SCSI_Inquiry_T
2165                                          *InquiryStandardData,
2166                                        DAC960_SCSI_Inquiry_UnitSerialNumber_T
2167                                          *InquiryUnitSerialNumber,
2168                                        unsigned char *Vendor,
2169                                        unsigned char *Model,
2170                                        unsigned char *Revision,
2171                                        unsigned char *SerialNumber)
2172 {
2173   int SerialNumberLength, i;
2174   if (InquiryStandardData->PeripheralDeviceType == 0x1F) return;
2175   for (i = 0; i < sizeof(InquiryStandardData->VendorIdentification); i++)
2176     {
2177       unsigned char VendorCharacter =
2178         InquiryStandardData->VendorIdentification[i];
2179       Vendor[i] = (VendorCharacter >= ' ' && VendorCharacter <= '~'
2180                    ? VendorCharacter : ' ');
2181     }
2182   Vendor[sizeof(InquiryStandardData->VendorIdentification)] = '\0';
2183   for (i = 0; i < sizeof(InquiryStandardData->ProductIdentification); i++)
2184     {
2185       unsigned char ModelCharacter =
2186         InquiryStandardData->ProductIdentification[i];
2187       Model[i] = (ModelCharacter >= ' ' && ModelCharacter <= '~'
2188                   ? ModelCharacter : ' ');
2189     }
2190   Model[sizeof(InquiryStandardData->ProductIdentification)] = '\0';
2191   for (i = 0; i < sizeof(InquiryStandardData->ProductRevisionLevel); i++)
2192     {
2193       unsigned char RevisionCharacter =
2194         InquiryStandardData->ProductRevisionLevel[i];
2195       Revision[i] = (RevisionCharacter >= ' ' && RevisionCharacter <= '~'
2196                      ? RevisionCharacter : ' ');
2197     }
2198   Revision[sizeof(InquiryStandardData->ProductRevisionLevel)] = '\0';
2199   if (InquiryUnitSerialNumber->PeripheralDeviceType == 0x1F) return;
2200   SerialNumberLength = InquiryUnitSerialNumber->PageLength;
2201   if (SerialNumberLength >
2202       sizeof(InquiryUnitSerialNumber->ProductSerialNumber))
2203     SerialNumberLength = sizeof(InquiryUnitSerialNumber->ProductSerialNumber);
2204   for (i = 0; i < SerialNumberLength; i++)
2205     {
2206       unsigned char SerialNumberCharacter =
2207         InquiryUnitSerialNumber->ProductSerialNumber[i];
2208       SerialNumber[i] =
2209         (SerialNumberCharacter >= ' ' && SerialNumberCharacter <= '~'
2210          ? SerialNumberCharacter : ' ');
2211     }
2212   SerialNumber[SerialNumberLength] = '\0';
2213 }
2214
2215
2216 /*
2217   DAC960_V1_ReportDeviceConfiguration reports the Device Configuration
2218   Information for DAC960 V1 Firmware Controllers.
2219 */
2220
2221 static bool DAC960_V1_ReportDeviceConfiguration(DAC960_Controller_T
2222                                                    *Controller)
2223 {
2224   int LogicalDriveNumber, Channel, TargetID;
2225   DAC960_Info("  Physical Devices:\n", Controller);
2226   for (Channel = 0; Channel < Controller->Channels; Channel++)
2227     for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
2228       {
2229         DAC960_SCSI_Inquiry_T *InquiryStandardData =
2230           &Controller->V1.InquiryStandardData[Channel][TargetID];
2231         DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2232           &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
2233         DAC960_V1_DeviceState_T *DeviceState =
2234           &Controller->V1.DeviceState[Channel][TargetID];
2235         DAC960_V1_ErrorTableEntry_T *ErrorEntry =
2236           &Controller->V1.ErrorTable.ErrorTableEntries[Channel][TargetID];
2237         char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
2238         char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
2239         char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
2240         char SerialNumber[1+sizeof(InquiryUnitSerialNumber
2241                                    ->ProductSerialNumber)];
2242         if (InquiryStandardData->PeripheralDeviceType == 0x1F) continue;
2243         DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
2244                                    Vendor, Model, Revision, SerialNumber);
2245         DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
2246                     Controller, Channel, TargetID, (TargetID < 10 ? " " : ""),
2247                     Vendor, Model, Revision);
2248         if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
2249           DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
2250         if (DeviceState->Present &&
2251             DeviceState->DeviceType == DAC960_V1_DiskType)
2252           {
2253             if (Controller->V1.DeviceResetCount[Channel][TargetID] > 0)
2254               DAC960_Info("         Disk Status: %s, %u blocks, %d resets\n",
2255                           Controller,
2256                           (DeviceState->DeviceState == DAC960_V1_Device_Dead
2257                            ? "Dead"
2258                            : DeviceState->DeviceState
2259                              == DAC960_V1_Device_WriteOnly
2260                              ? "Write-Only"
2261                              : DeviceState->DeviceState
2262                                == DAC960_V1_Device_Online
2263                                ? "Online" : "Standby"),
2264                           DeviceState->DiskSize,
2265                           Controller->V1.DeviceResetCount[Channel][TargetID]);
2266             else
2267               DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
2268                           (DeviceState->DeviceState == DAC960_V1_Device_Dead
2269                            ? "Dead"
2270                            : DeviceState->DeviceState
2271                              == DAC960_V1_Device_WriteOnly
2272                              ? "Write-Only"
2273                              : DeviceState->DeviceState
2274                                == DAC960_V1_Device_Online
2275                                ? "Online" : "Standby"),
2276                           DeviceState->DiskSize);
2277           }
2278         if (ErrorEntry->ParityErrorCount > 0 ||
2279             ErrorEntry->SoftErrorCount > 0 ||
2280             ErrorEntry->HardErrorCount > 0 ||
2281             ErrorEntry->MiscErrorCount > 0)
2282           DAC960_Info("         Errors - Parity: %d, Soft: %d, "
2283                       "Hard: %d, Misc: %d\n", Controller,
2284                       ErrorEntry->ParityErrorCount,
2285                       ErrorEntry->SoftErrorCount,
2286                       ErrorEntry->HardErrorCount,
2287                       ErrorEntry->MiscErrorCount);
2288       }
2289   DAC960_Info("  Logical Drives:\n", Controller);
2290   for (LogicalDriveNumber = 0;
2291        LogicalDriveNumber < Controller->LogicalDriveCount;
2292        LogicalDriveNumber++)
2293     {
2294       DAC960_V1_LogicalDriveInformation_T *LogicalDriveInformation =
2295         &Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
2296       DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks, %s\n",
2297                   Controller, Controller->ControllerNumber, LogicalDriveNumber,
2298                   LogicalDriveInformation->RAIDLevel,
2299                   (LogicalDriveInformation->LogicalDriveState
2300                    == DAC960_V1_LogicalDrive_Online
2301                    ? "Online"
2302                    : LogicalDriveInformation->LogicalDriveState
2303                      == DAC960_V1_LogicalDrive_Critical
2304                      ? "Critical" : "Offline"),
2305                   LogicalDriveInformation->LogicalDriveSize,
2306                   (LogicalDriveInformation->WriteBack
2307                    ? "Write Back" : "Write Thru"));
2308     }
2309   return true;
2310 }
2311
2312
2313 /*
2314   DAC960_V2_ReportDeviceConfiguration reports the Device Configuration
2315   Information for DAC960 V2 Firmware Controllers.
2316 */
2317
2318 static bool DAC960_V2_ReportDeviceConfiguration(DAC960_Controller_T
2319                                                    *Controller)
2320 {
2321   int PhysicalDeviceIndex, LogicalDriveNumber;
2322   DAC960_Info("  Physical Devices:\n", Controller);
2323   for (PhysicalDeviceIndex = 0;
2324        PhysicalDeviceIndex < DAC960_V2_MaxPhysicalDevices;
2325        PhysicalDeviceIndex++)
2326     {
2327       DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
2328         Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
2329       DAC960_SCSI_Inquiry_T *InquiryStandardData =
2330         (DAC960_SCSI_Inquiry_T *) &PhysicalDeviceInfo->SCSI_InquiryData;
2331       DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2332         Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
2333       char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
2334       char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
2335       char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
2336       char SerialNumber[1+sizeof(InquiryUnitSerialNumber->ProductSerialNumber)];
2337       if (PhysicalDeviceInfo == NULL) break;
2338       DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
2339                                  Vendor, Model, Revision, SerialNumber);
2340       DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
2341                   Controller,
2342                   PhysicalDeviceInfo->Channel,
2343                   PhysicalDeviceInfo->TargetID,
2344                   (PhysicalDeviceInfo->TargetID < 10 ? " " : ""),
2345                   Vendor, Model, Revision);
2346       if (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers == 0)
2347         DAC960_Info("         %sAsynchronous\n", Controller,
2348                     (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
2349                      ? "Wide " :""));
2350       else
2351         DAC960_Info("         %sSynchronous at %d MB/sec\n", Controller,
2352                     (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
2353                      ? "Wide " :""),
2354                     (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers
2355                      * PhysicalDeviceInfo->NegotiatedDataWidthBits/8));
2356       if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
2357         DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
2358       if (PhysicalDeviceInfo->PhysicalDeviceState ==
2359           DAC960_V2_Device_Unconfigured)
2360         continue;
2361       DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
2362                   (PhysicalDeviceInfo->PhysicalDeviceState
2363                    == DAC960_V2_Device_Online
2364                    ? "Online"
2365                    : PhysicalDeviceInfo->PhysicalDeviceState
2366                      == DAC960_V2_Device_Rebuild
2367                      ? "Rebuild"
2368                      : PhysicalDeviceInfo->PhysicalDeviceState
2369                        == DAC960_V2_Device_Missing
2370                        ? "Missing"
2371                        : PhysicalDeviceInfo->PhysicalDeviceState
2372                          == DAC960_V2_Device_Critical
2373                          ? "Critical"
2374                          : PhysicalDeviceInfo->PhysicalDeviceState
2375                            == DAC960_V2_Device_Dead
2376                            ? "Dead"
2377                            : PhysicalDeviceInfo->PhysicalDeviceState
2378                              == DAC960_V2_Device_SuspectedDead
2379                              ? "Suspected-Dead"
2380                              : PhysicalDeviceInfo->PhysicalDeviceState
2381                                == DAC960_V2_Device_CommandedOffline
2382                                ? "Commanded-Offline"
2383                                : PhysicalDeviceInfo->PhysicalDeviceState
2384                                  == DAC960_V2_Device_Standby
2385                                  ? "Standby" : "Unknown"),
2386                   PhysicalDeviceInfo->ConfigurableDeviceSize);
2387       if (PhysicalDeviceInfo->ParityErrors == 0 &&
2388           PhysicalDeviceInfo->SoftErrors == 0 &&
2389           PhysicalDeviceInfo->HardErrors == 0 &&
2390           PhysicalDeviceInfo->MiscellaneousErrors == 0 &&
2391           PhysicalDeviceInfo->CommandTimeouts == 0 &&
2392           PhysicalDeviceInfo->Retries == 0 &&
2393           PhysicalDeviceInfo->Aborts == 0 &&
2394           PhysicalDeviceInfo->PredictedFailuresDetected == 0)
2395         continue;
2396       DAC960_Info("         Errors - Parity: %d, Soft: %d, "
2397                   "Hard: %d, Misc: %d\n", Controller,
2398                   PhysicalDeviceInfo->ParityErrors,
2399                   PhysicalDeviceInfo->SoftErrors,
2400                   PhysicalDeviceInfo->HardErrors,
2401                   PhysicalDeviceInfo->MiscellaneousErrors);
2402       DAC960_Info("                  Timeouts: %d, Retries: %d, "
2403                   "Aborts: %d, Predicted: %d\n", Controller,
2404                   PhysicalDeviceInfo->CommandTimeouts,
2405                   PhysicalDeviceInfo->Retries,
2406                   PhysicalDeviceInfo->Aborts,
2407                   PhysicalDeviceInfo->PredictedFailuresDetected);
2408     }
2409   DAC960_Info("  Logical Drives:\n", Controller);
2410   for (LogicalDriveNumber = 0;
2411        LogicalDriveNumber < DAC960_MaxLogicalDrives;
2412        LogicalDriveNumber++)
2413     {
2414       DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
2415         Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
2416       unsigned char *ReadCacheStatus[] = { "Read Cache Disabled",
2417                                            "Read Cache Enabled",
2418                                            "Read Ahead Enabled",
2419                                            "Intelligent Read Ahead Enabled",
2420                                            "-", "-", "-", "-" };
2421       unsigned char *WriteCacheStatus[] = { "Write Cache Disabled",
2422                                             "Logical Device Read Only",
2423                                             "Write Cache Enabled",
2424                                             "Intelligent Write Cache Enabled",
2425                                             "-", "-", "-", "-" };
2426       unsigned char *GeometryTranslation;
2427       if (LogicalDeviceInfo == NULL) continue;
2428       switch (LogicalDeviceInfo->DriveGeometry)
2429         {
2430         case DAC960_V2_Geometry_128_32:
2431           GeometryTranslation = "128/32";
2432           break;
2433         case DAC960_V2_Geometry_255_63:
2434           GeometryTranslation = "255/63";
2435           break;
2436         default:
2437           GeometryTranslation = "Invalid";
2438           DAC960_Error("Illegal Logical Device Geometry %d\n",
2439                        Controller, LogicalDeviceInfo->DriveGeometry);
2440           break;
2441         }
2442       DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks\n",
2443                   Controller, Controller->ControllerNumber, LogicalDriveNumber,
2444                   LogicalDeviceInfo->RAIDLevel,
2445                   (LogicalDeviceInfo->LogicalDeviceState
2446                    == DAC960_V2_LogicalDevice_Online
2447                    ? "Online"
2448                    : LogicalDeviceInfo->LogicalDeviceState
2449                      == DAC960_V2_LogicalDevice_Critical
2450                      ? "Critical" : "Offline"),
2451                   LogicalDeviceInfo->ConfigurableDeviceSize);
2452       DAC960_Info("                  Logical Device %s, BIOS Geometry: %s\n",
2453                   Controller,
2454                   (LogicalDeviceInfo->LogicalDeviceControl
2455                                      .LogicalDeviceInitialized
2456                    ? "Initialized" : "Uninitialized"),
2457                   GeometryTranslation);
2458       if (LogicalDeviceInfo->StripeSize == 0)
2459         {
2460           if (LogicalDeviceInfo->CacheLineSize == 0)
2461             DAC960_Info("                  Stripe Size: N/A, "
2462                         "Segment Size: N/A\n", Controller);
2463           else
2464             DAC960_Info("                  Stripe Size: N/A, "
2465                         "Segment Size: %dKB\n", Controller,
2466                         1 << (LogicalDeviceInfo->CacheLineSize - 2));
2467         }
2468       else
2469         {
2470           if (LogicalDeviceInfo->CacheLineSize == 0)
2471             DAC960_Info("                  Stripe Size: %dKB, "
2472                         "Segment Size: N/A\n", Controller,
2473                         1 << (LogicalDeviceInfo->StripeSize - 2));
2474           else
2475             DAC960_Info("                  Stripe Size: %dKB, "
2476                         "Segment Size: %dKB\n", Controller,
2477                         1 << (LogicalDeviceInfo->StripeSize - 2),
2478                         1 << (LogicalDeviceInfo->CacheLineSize - 2));
2479         }
2480       DAC960_Info("                  %s, %s\n", Controller,
2481                   ReadCacheStatus[
2482                     LogicalDeviceInfo->LogicalDeviceControl.ReadCache],
2483                   WriteCacheStatus[
2484                     LogicalDeviceInfo->LogicalDeviceControl.WriteCache]);
2485       if (LogicalDeviceInfo->SoftErrors > 0 ||
2486           LogicalDeviceInfo->CommandsFailed > 0 ||
2487           LogicalDeviceInfo->DeferredWriteErrors)
2488         DAC960_Info("                  Errors - Soft: %d, Failed: %d, "
2489                     "Deferred Write: %d\n", Controller,
2490                     LogicalDeviceInfo->SoftErrors,
2491                     LogicalDeviceInfo->CommandsFailed,
2492                     LogicalDeviceInfo->DeferredWriteErrors);
2493
2494     }
2495   return true;
2496 }
2497
2498 /*
2499   DAC960_RegisterBlockDevice registers the Block Device structures
2500   associated with Controller.
2501 */
2502
2503 static bool DAC960_RegisterBlockDevice(DAC960_Controller_T *Controller)
2504 {
2505   int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
2506   int n;
2507
2508   /*
2509     Register the Block Device Major Number for this DAC960 Controller.
2510   */
2511   if (register_blkdev(MajorNumber, "dac960") < 0)
2512       return false;
2513
2514   for (n = 0; n < DAC960_MaxLogicalDrives; n++) {
2515         struct gendisk *disk = Controller->disks[n];
2516         struct request_queue *RequestQueue;
2517
2518         /* for now, let all request queues share controller's lock */
2519         RequestQueue = blk_init_queue(DAC960_RequestFunction,&Controller->queue_lock);
2520         if (!RequestQueue) {
2521                 printk("DAC960: failure to allocate request queue\n");
2522                 continue;
2523         }
2524         Controller->RequestQueue[n] = RequestQueue;
2525         blk_queue_bounce_limit(RequestQueue, Controller->BounceBufferLimit);
2526         RequestQueue->queuedata = Controller;
2527         blk_queue_max_hw_segments(RequestQueue, Controller->DriverScatterGatherLimit);
2528         blk_queue_max_phys_segments(RequestQueue, Controller->DriverScatterGatherLimit);
2529         blk_queue_max_sectors(RequestQueue, Controller->MaxBlocksPerCommand);
2530         disk->queue = RequestQueue;
2531         sprintf(disk->disk_name, "rd/c%dd%d", Controller->ControllerNumber, n);
2532         disk->major = MajorNumber;
2533         disk->first_minor = n << DAC960_MaxPartitionsBits;
2534         disk->fops = &DAC960_BlockDeviceOperations;
2535    }
2536   /*
2537     Indicate the Block Device Registration completed successfully,
2538   */
2539   return true;
2540 }
2541
2542
2543 /*
2544   DAC960_UnregisterBlockDevice unregisters the Block Device structures
2545   associated with Controller.
2546 */
2547
2548 static void DAC960_UnregisterBlockDevice(DAC960_Controller_T *Controller)
2549 {
2550   int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
2551   int disk;
2552
2553   /* does order matter when deleting gendisk and cleanup in request queue? */
2554   for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
2555         del_gendisk(Controller->disks[disk]);
2556         blk_cleanup_queue(Controller->RequestQueue[disk]);
2557         Controller->RequestQueue[disk] = NULL;
2558   }
2559
2560   /*
2561     Unregister the Block Device Major Number for this DAC960 Controller.
2562   */
2563   unregister_blkdev(MajorNumber, "dac960");
2564 }
2565
2566 /*
2567   DAC960_ComputeGenericDiskInfo computes the values for the Generic Disk
2568   Information Partition Sector Counts and Block Sizes.
2569 */
2570
2571 static void DAC960_ComputeGenericDiskInfo(DAC960_Controller_T *Controller)
2572 {
2573         int disk;
2574         for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++)
2575                 set_capacity(Controller->disks[disk], disk_size(Controller, disk));
2576 }
2577
2578 /*
2579   DAC960_ReportErrorStatus reports Controller BIOS Messages passed through
2580   the Error Status Register when the driver performs the BIOS handshaking.
2581   It returns true for fatal errors and false otherwise.
2582 */
2583
2584 static bool DAC960_ReportErrorStatus(DAC960_Controller_T *Controller,
2585                                         unsigned char ErrorStatus,
2586                                         unsigned char Parameter0,
2587                                         unsigned char Parameter1)
2588 {
2589   switch (ErrorStatus)
2590     {
2591     case 0x00:
2592       DAC960_Notice("Physical Device %d:%d Not Responding\n",
2593                     Controller, Parameter1, Parameter0);
2594       break;
2595     case 0x08:
2596       if (Controller->DriveSpinUpMessageDisplayed) break;
2597       DAC960_Notice("Spinning Up Drives\n", Controller);
2598       Controller->DriveSpinUpMessageDisplayed = true;
2599       break;
2600     case 0x30:
2601       DAC960_Notice("Configuration Checksum Error\n", Controller);
2602       break;
2603     case 0x60:
2604       DAC960_Notice("Mirror Race Recovery Failed\n", Controller);
2605       break;
2606     case 0x70:
2607       DAC960_Notice("Mirror Race Recovery In Progress\n", Controller);
2608       break;
2609     case 0x90:
2610       DAC960_Notice("Physical Device %d:%d COD Mismatch\n",
2611                     Controller, Parameter1, Parameter0);
2612       break;
2613     case 0xA0:
2614       DAC960_Notice("Logical Drive Installation Aborted\n", Controller);
2615       break;
2616     case 0xB0:
2617       DAC960_Notice("Mirror Race On A Critical Logical Drive\n", Controller);
2618       break;
2619     case 0xD0:
2620       DAC960_Notice("New Controller Configuration Found\n", Controller);
2621       break;
2622     case 0xF0:
2623       DAC960_Error("Fatal Memory Parity Error for Controller at\n", Controller);
2624       return true;
2625     default:
2626       DAC960_Error("Unknown Initialization Error %02X for Controller at\n",
2627                    Controller, ErrorStatus);
2628       return true;
2629     }
2630   return false;
2631 }
2632
2633
2634 /*
2635  * DAC960_DetectCleanup releases the resources that were allocated
2636  * during DAC960_DetectController().  DAC960_DetectController can
2637  * has several internal failure points, so not ALL resources may
2638  * have been allocated.  It's important to free only
2639  * resources that HAVE been allocated.  The code below always
2640  * tests that the resource has been allocated before attempting to
2641  * free it.
2642  */
2643 static void DAC960_DetectCleanup(DAC960_Controller_T *Controller)
2644 {
2645   int i;
2646
2647   /* Free the memory mailbox, status, and related structures */
2648   free_dma_loaf(Controller->PCIDevice, &Controller->DmaPages);
2649   if (Controller->MemoryMappedAddress) {
2650         switch(Controller->HardwareType)
2651         {
2652                 case DAC960_GEM_Controller:
2653                         DAC960_GEM_DisableInterrupts(Controller->BaseAddress);
2654                         break;
2655                 case DAC960_BA_Controller:
2656                         DAC960_BA_DisableInterrupts(Controller->BaseAddress);
2657                         break;
2658                 case DAC960_LP_Controller:
2659                         DAC960_LP_DisableInterrupts(Controller->BaseAddress);
2660                         break;
2661                 case DAC960_LA_Controller:
2662                         DAC960_LA_DisableInterrupts(Controller->BaseAddress);
2663                         break;
2664                 case DAC960_PG_Controller:
2665                         DAC960_PG_DisableInterrupts(Controller->BaseAddress);
2666                         break;
2667                 case DAC960_PD_Controller:
2668                         DAC960_PD_DisableInterrupts(Controller->BaseAddress);
2669                         break;
2670                 case DAC960_P_Controller:
2671                         DAC960_PD_DisableInterrupts(Controller->BaseAddress);
2672                         break;
2673         }
2674         iounmap(Controller->MemoryMappedAddress);
2675   }
2676   if (Controller->IRQ_Channel)
2677         free_irq(Controller->IRQ_Channel, Controller);
2678   if (Controller->IO_Address)
2679         release_region(Controller->IO_Address, 0x80);
2680   pci_disable_device(Controller->PCIDevice);
2681   for (i = 0; (i < DAC960_MaxLogicalDrives) && Controller->disks[i]; i++)
2682        put_disk(Controller->disks[i]);
2683   DAC960_Controllers[Controller->ControllerNumber] = NULL;
2684   kfree(Controller);
2685 }
2686
2687
2688 /*
2689   DAC960_DetectController detects Mylex DAC960/AcceleRAID/eXtremeRAID
2690   PCI RAID Controllers by interrogating the PCI Configuration Space for
2691   Controller Type.
2692 */
2693
2694 static DAC960_Controller_T *
2695 DAC960_DetectController(struct pci_dev *PCI_Device,
2696                         const struct pci_device_id *entry)
2697 {
2698   struct DAC960_privdata *privdata =
2699                 (struct DAC960_privdata *)entry->driver_data;
2700   irq_handler_t InterruptHandler = privdata->InterruptHandler;
2701   unsigned int MemoryWindowSize = privdata->MemoryWindowSize;
2702   DAC960_Controller_T *Controller = NULL;
2703   unsigned char DeviceFunction = PCI_Device->devfn;
2704   unsigned char ErrorStatus, Parameter0, Parameter1;
2705   unsigned int IRQ_Channel;
2706   void __iomem *BaseAddress;
2707   int i;
2708
2709   Controller = kzalloc(sizeof(DAC960_Controller_T), GFP_ATOMIC);
2710   if (Controller == NULL) {
2711         DAC960_Error("Unable to allocate Controller structure for "
2712                        "Controller at\n", NULL);
2713         return NULL;
2714   }
2715   Controller->ControllerNumber = DAC960_ControllerCount;
2716   DAC960_Controllers[DAC960_ControllerCount++] = Controller;
2717   Controller->Bus = PCI_Device->bus->number;
2718   Controller->FirmwareType = privdata->FirmwareType;
2719   Controller->HardwareType = privdata->HardwareType;
2720   Controller->Device = DeviceFunction >> 3;
2721   Controller->Function = DeviceFunction & 0x7;
2722   Controller->PCIDevice = PCI_Device;
2723   strcpy(Controller->FullModelName, "DAC960");
2724
2725   if (pci_enable_device(PCI_Device))
2726         goto Failure;
2727
2728   switch (Controller->HardwareType)
2729   {
2730         case DAC960_GEM_Controller:
2731           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2732           break;
2733         case DAC960_BA_Controller:
2734           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2735           break;
2736         case DAC960_LP_Controller:
2737           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2738           break;
2739         case DAC960_LA_Controller:
2740           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2741           break;
2742         case DAC960_PG_Controller:
2743           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2744           break;
2745         case DAC960_PD_Controller:
2746           Controller->IO_Address = pci_resource_start(PCI_Device, 0);
2747           Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
2748           break;
2749         case DAC960_P_Controller:
2750           Controller->IO_Address = pci_resource_start(PCI_Device, 0);
2751           Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
2752           break;
2753   }
2754
2755   pci_set_drvdata(PCI_Device, (void *)((long)Controller->ControllerNumber));
2756   for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
2757         Controller->disks[i] = alloc_disk(1<<DAC960_MaxPartitionsBits);
2758         if (!Controller->disks[i])
2759                 goto Failure;
2760         Controller->disks[i]->private_data = (void *)((long)i);
2761   }
2762   init_waitqueue_head(&Controller->CommandWaitQueue);
2763   init_waitqueue_head(&Controller->HealthStatusWaitQueue);
2764   spin_lock_init(&Controller->queue_lock);
2765   DAC960_AnnounceDriver(Controller);
2766   /*
2767     Map the Controller Register Window.
2768   */
2769  if (MemoryWindowSize < PAGE_SIZE)
2770         MemoryWindowSize = PAGE_SIZE;
2771   Controller->MemoryMappedAddress =
2772         ioremap_nocache(Controller->PCI_Address & PAGE_MASK, MemoryWindowSize);
2773   Controller->BaseAddress =
2774         Controller->MemoryMappedAddress + (Controller->PCI_Address & ~PAGE_MASK);
2775   if (Controller->MemoryMappedAddress == NULL)
2776   {
2777           DAC960_Error("Unable to map Controller Register Window for "
2778                        "Controller at\n", Controller);
2779           goto Failure;
2780   }
2781   BaseAddress = Controller->BaseAddress;
2782   switch (Controller->HardwareType)
2783   {
2784         case DAC960_GEM_Controller:
2785           DAC960_GEM_DisableInterrupts(BaseAddress);
2786           DAC960_GEM_AcknowledgeHardwareMailboxStatus(BaseAddress);
2787           udelay(1000);
2788           while (DAC960_GEM_InitializationInProgressP(BaseAddress))
2789             {
2790               if (DAC960_GEM_ReadErrorStatus(BaseAddress, &ErrorStatus,
2791                                             &Parameter0, &Parameter1) &&
2792                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2793                                            Parameter0, Parameter1))
2794                 goto Failure;
2795               udelay(10);
2796             }
2797           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2798             {
2799               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2800                            "for Controller at\n", Controller);
2801               goto Failure;
2802             }
2803           DAC960_GEM_EnableInterrupts(BaseAddress);
2804           Controller->QueueCommand = DAC960_GEM_QueueCommand;
2805           Controller->ReadControllerConfiguration =
2806             DAC960_V2_ReadControllerConfiguration;
2807           Controller->ReadDeviceConfiguration =
2808             DAC960_V2_ReadDeviceConfiguration;
2809           Controller->ReportDeviceConfiguration =
2810             DAC960_V2_ReportDeviceConfiguration;
2811           Controller->QueueReadWriteCommand =
2812             DAC960_V2_QueueReadWriteCommand;
2813           break;
2814         case DAC960_BA_Controller:
2815           DAC960_BA_DisableInterrupts(BaseAddress);
2816           DAC960_BA_AcknowledgeHardwareMailboxStatus(BaseAddress);
2817           udelay(1000);
2818           while (DAC960_BA_InitializationInProgressP(BaseAddress))
2819             {
2820               if (DAC960_BA_ReadErrorStatus(BaseAddress, &ErrorStatus,
2821                                             &Parameter0, &Parameter1) &&
2822                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2823                                            Parameter0, Parameter1))
2824                 goto Failure;
2825               udelay(10);
2826             }
2827           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2828             {
2829               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2830                            "for Controller at\n", Controller);
2831               goto Failure;
2832             }
2833           DAC960_BA_EnableInterrupts(BaseAddress);
2834           Controller->QueueCommand = DAC960_BA_QueueCommand;
2835           Controller->ReadControllerConfiguration =
2836             DAC960_V2_ReadControllerConfiguration;
2837           Controller->ReadDeviceConfiguration =
2838             DAC960_V2_ReadDeviceConfiguration;
2839           Controller->ReportDeviceConfiguration =
2840             DAC960_V2_ReportDeviceConfiguration;
2841           Controller->QueueReadWriteCommand =
2842             DAC960_V2_QueueReadWriteCommand;
2843           break;
2844         case DAC960_LP_Controller:
2845           DAC960_LP_DisableInterrupts(BaseAddress);
2846           DAC960_LP_AcknowledgeHardwareMailboxStatus(BaseAddress);
2847           udelay(1000);
2848           while (DAC960_LP_InitializationInProgressP(BaseAddress))
2849             {
2850               if (DAC960_LP_ReadErrorStatus(BaseAddress, &ErrorStatus,
2851                                             &Parameter0, &Parameter1) &&
2852                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2853                                            Parameter0, Parameter1))
2854                 goto Failure;
2855               udelay(10);
2856             }
2857           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2858             {
2859               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2860                            "for Controller at\n", Controller);
2861               goto Failure;
2862             }
2863           DAC960_LP_EnableInterrupts(BaseAddress);
2864           Controller->QueueCommand = DAC960_LP_QueueCommand;
2865           Controller->ReadControllerConfiguration =
2866             DAC960_V2_ReadControllerConfiguration;
2867           Controller->ReadDeviceConfiguration =
2868             DAC960_V2_ReadDeviceConfiguration;
2869           Controller->ReportDeviceConfiguration =
2870             DAC960_V2_ReportDeviceConfiguration;
2871           Controller->QueueReadWriteCommand =
2872             DAC960_V2_QueueReadWriteCommand;
2873           break;
2874         case DAC960_LA_Controller:
2875           DAC960_LA_DisableInterrupts(BaseAddress);
2876           DAC960_LA_AcknowledgeHardwareMailboxStatus(BaseAddress);
2877           udelay(1000);
2878           while (DAC960_LA_InitializationInProgressP(BaseAddress))
2879             {
2880               if (DAC960_LA_ReadErrorStatus(BaseAddress, &ErrorStatus,
2881                                             &Parameter0, &Parameter1) &&
2882                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2883                                            Parameter0, Parameter1))
2884                 goto Failure;
2885               udelay(10);
2886             }
2887           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2888             {
2889               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2890                            "for Controller at\n", Controller);
2891               goto Failure;
2892             }
2893           DAC960_LA_EnableInterrupts(BaseAddress);
2894           if (Controller->V1.DualModeMemoryMailboxInterface)
2895             Controller->QueueCommand = DAC960_LA_QueueCommandDualMode;
2896           else Controller->QueueCommand = DAC960_LA_QueueCommandSingleMode;
2897           Controller->ReadControllerConfiguration =
2898             DAC960_V1_ReadControllerConfiguration;
2899           Controller->ReadDeviceConfiguration =
2900             DAC960_V1_ReadDeviceConfiguration;
2901           Controller->ReportDeviceConfiguration =
2902             DAC960_V1_ReportDeviceConfiguration;
2903           Controller->QueueReadWriteCommand =
2904             DAC960_V1_QueueReadWriteCommand;
2905           break;
2906         case DAC960_PG_Controller:
2907           DAC960_PG_DisableInterrupts(BaseAddress);
2908           DAC960_PG_AcknowledgeHardwareMailboxStatus(BaseAddress);
2909           udelay(1000);
2910           while (DAC960_PG_InitializationInProgressP(BaseAddress))
2911             {
2912               if (DAC960_PG_ReadErrorStatus(BaseAddress, &ErrorStatus,
2913                                             &Parameter0, &Parameter1) &&
2914                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2915                                            Parameter0, Parameter1))
2916                 goto Failure;
2917               udelay(10);
2918             }
2919           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2920             {
2921               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2922                            "for Controller at\n", Controller);
2923               goto Failure;
2924             }
2925           DAC960_PG_EnableInterrupts(BaseAddress);
2926           if (Controller->V1.DualModeMemoryMailboxInterface)
2927             Controller->QueueCommand = DAC960_PG_QueueCommandDualMode;
2928           else Controller->QueueCommand = DAC960_PG_QueueCommandSingleMode;
2929           Controller->ReadControllerConfiguration =
2930             DAC960_V1_ReadControllerConfiguration;
2931           Controller->ReadDeviceConfiguration =
2932             DAC960_V1_ReadDeviceConfiguration;
2933           Controller->ReportDeviceConfiguration =
2934             DAC960_V1_ReportDeviceConfiguration;
2935           Controller->QueueReadWriteCommand =
2936             DAC960_V1_QueueReadWriteCommand;
2937           break;
2938         case DAC960_PD_Controller:
2939           if (!request_region(Controller->IO_Address, 0x80,
2940                               Controller->FullModelName)) {
2941                 DAC960_Error("IO port 0x%d busy for Controller at\n",
2942                              Controller, Controller->IO_Address);
2943                 goto Failure;
2944           }
2945           DAC960_PD_DisableInterrupts(BaseAddress);
2946           DAC960_PD_AcknowledgeStatus(BaseAddress);
2947           udelay(1000);
2948           while (DAC960_PD_InitializationInProgressP(BaseAddress))
2949             {
2950               if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
2951                                             &Parameter0, &Parameter1) &&
2952                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2953                                            Parameter0, Parameter1))
2954                 goto Failure;
2955               udelay(10);
2956             }
2957           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2958             {
2959               DAC960_Error("Unable to allocate DMA mapped memory "
2960                            "for Controller at\n", Controller);
2961               goto Failure;
2962             }
2963           DAC960_PD_EnableInterrupts(BaseAddress);
2964           Controller->QueueCommand = DAC960_PD_QueueCommand;
2965           Controller->ReadControllerConfiguration =
2966             DAC960_V1_ReadControllerConfiguration;
2967           Controller->ReadDeviceConfiguration =
2968             DAC960_V1_ReadDeviceConfiguration;
2969           Controller->ReportDeviceConfiguration =
2970             DAC960_V1_ReportDeviceConfiguration;
2971           Controller->QueueReadWriteCommand =
2972             DAC960_V1_QueueReadWriteCommand;
2973           break;
2974         case DAC960_P_Controller:
2975           if (!request_region(Controller->IO_Address, 0x80,
2976                               Controller->FullModelName)){
2977                 DAC960_Error("IO port 0x%d busy for Controller at\n",
2978                              Controller, Controller->IO_Address);
2979                 goto Failure;
2980           }
2981           DAC960_PD_DisableInterrupts(BaseAddress);
2982           DAC960_PD_AcknowledgeStatus(BaseAddress);
2983           udelay(1000);
2984           while (DAC960_PD_InitializationInProgressP(BaseAddress))
2985             {
2986               if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
2987                                             &Parameter0, &Parameter1) &&
2988                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2989                                            Parameter0, Parameter1))
2990                 goto Failure;
2991               udelay(10);
2992             }
2993           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2994             {
2995               DAC960_Error("Unable to allocate DMA mapped memory"
2996                            "for Controller at\n", Controller);
2997               goto Failure;
2998             }
2999           DAC960_PD_EnableInterrupts(BaseAddress);
3000           Controller->QueueCommand = DAC960_P_QueueCommand;
3001           Controller->ReadControllerConfiguration =
3002             DAC960_V1_ReadControllerConfiguration;
3003           Controller->ReadDeviceConfiguration =
3004             DAC960_V1_ReadDeviceConfiguration;
3005           Controller->ReportDeviceConfiguration =
3006             DAC960_V1_ReportDeviceConfiguration;
3007           Controller->QueueReadWriteCommand =
3008             DAC960_V1_QueueReadWriteCommand;
3009           break;
3010   }
3011   /*
3012      Acquire shared access to the IRQ Channel.
3013   */
3014   IRQ_Channel = PCI_Device->irq;
3015   if (request_irq(IRQ_Channel, InterruptHandler, IRQF_SHARED,
3016                       Controller->FullModelName, Controller) < 0)
3017   {
3018         DAC960_Error("Unable to acquire IRQ Channel %d for Controller at\n",
3019                        Controller, Controller->IRQ_Channel);
3020         goto Failure;
3021   }
3022   Controller->IRQ_Channel = IRQ_Channel;
3023   Controller->InitialCommand.CommandIdentifier = 1;
3024   Controller->InitialCommand.Controller = Controller;
3025   Controller->Commands[0] = &Controller->InitialCommand;
3026   Controller->FreeCommands = &Controller->InitialCommand;
3027   return Controller;
3028
3029 Failure:
3030   if (Controller->IO_Address == 0)
3031         DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
3032                      "PCI Address 0x%X\n", Controller,
3033                      Controller->Bus, Controller->Device,
3034                      Controller->Function, Controller->PCI_Address);
3035   else
3036         DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
3037                         "0x%X PCI Address 0x%X\n", Controller,
3038                         Controller->Bus, Controller->Device,
3039                         Controller->Function, Controller->IO_Address,
3040                         Controller->PCI_Address);
3041   DAC960_DetectCleanup(Controller);
3042   DAC960_ControllerCount--;
3043   return NULL;
3044 }
3045
3046 /*
3047   DAC960_InitializeController initializes Controller.
3048 */
3049
3050 static bool
3051 DAC960_InitializeController(DAC960_Controller_T *Controller)
3052 {
3053   if (DAC960_ReadControllerConfiguration(Controller) &&
3054       DAC960_ReportControllerConfiguration(Controller) &&
3055       DAC960_CreateAuxiliaryStructures(Controller) &&
3056       DAC960_ReadDeviceConfiguration(Controller) &&
3057       DAC960_ReportDeviceConfiguration(Controller) &&
3058       DAC960_RegisterBlockDevice(Controller))
3059     {
3060       /*
3061         Initialize the Monitoring Timer.
3062       */
3063       init_timer(&Controller->MonitoringTimer);
3064       Controller->MonitoringTimer.expires =
3065         jiffies + DAC960_MonitoringTimerInterval;
3066       Controller->MonitoringTimer.data = (unsigned long) Controller;
3067       Controller->MonitoringTimer.function = DAC960_MonitoringTimerFunction;
3068       add_timer(&Controller->MonitoringTimer);
3069       Controller->ControllerInitialized = true;
3070       return true;
3071     }
3072   return false;
3073 }
3074
3075
3076 /*
3077   DAC960_FinalizeController finalizes Controller.
3078 */
3079
3080 static void DAC960_FinalizeController(DAC960_Controller_T *Controller)
3081 {
3082   if (Controller->ControllerInitialized)
3083     {
3084       unsigned long flags;
3085
3086       /*
3087        * Acquiring and releasing lock here eliminates
3088        * a very low probability race.
3089        *
3090        * The code below allocates controller command structures
3091        * from the free list without holding the controller lock.
3092        * This is safe assuming there is no other activity on
3093        * the controller at the time.
3094        *
3095        * But, there might be a monitoring command still
3096        * in progress.  Setting the Shutdown flag while holding
3097        * the lock ensures that there is no monitoring command
3098        * in the interrupt handler currently, and any monitoring
3099        * commands that complete from this time on will NOT return
3100        * their command structure to the free list.
3101        */
3102
3103       spin_lock_irqsave(&Controller->queue_lock, flags);
3104       Controller->ShutdownMonitoringTimer = 1;
3105       spin_unlock_irqrestore(&Controller->queue_lock, flags);
3106
3107       del_timer_sync(&Controller->MonitoringTimer);
3108       if (Controller->FirmwareType == DAC960_V1_Controller)
3109         {
3110           DAC960_Notice("Flushing Cache...", Controller);
3111           DAC960_V1_ExecuteType3(Controller, DAC960_V1_Flush, 0);
3112           DAC960_Notice("done\n", Controller);
3113
3114           if (Controller->HardwareType == DAC960_PD_Controller)
3115               release_region(Controller->IO_Address, 0x80);
3116         }
3117       else
3118         {
3119           DAC960_Notice("Flushing Cache...", Controller);
3120           DAC960_V2_DeviceOperation(Controller, DAC960_V2_PauseDevice,
3121                                     DAC960_V2_RAID_Controller);
3122           DAC960_Notice("done\n", Controller);
3123         }
3124     }
3125   DAC960_UnregisterBlockDevice(Controller);
3126   DAC960_DestroyAuxiliaryStructures(Controller);
3127   DAC960_DestroyProcEntries(Controller);
3128   DAC960_DetectCleanup(Controller);
3129 }
3130
3131
3132 /*
3133   DAC960_Probe verifies controller's existence and
3134   initializes the DAC960 Driver for that controller.
3135 */
3136
3137 static int
3138 DAC960_Probe(struct pci_dev *dev, const struct pci_device_id *entry)
3139 {
3140   int disk;
3141   DAC960_Controller_T *Controller;
3142
3143   if (DAC960_ControllerCount == DAC960_MaxControllers)
3144   {
3145         DAC960_Error("More than %d DAC960 Controllers detected - "
3146                        "ignoring from Controller at\n",
3147                        NULL, DAC960_MaxControllers);
3148         return -ENODEV;
3149   }
3150
3151   Controller = DAC960_DetectController(dev, entry);
3152   if (!Controller)
3153         return -ENODEV;
3154
3155   if (!DAC960_InitializeController(Controller)) {
3156         DAC960_FinalizeController(Controller);
3157         return -ENODEV;
3158   }
3159
3160   for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
3161         set_capacity(Controller->disks[disk], disk_size(Controller, disk));
3162         add_disk(Controller->disks[disk]);
3163   }
3164   DAC960_CreateProcEntries(Controller);
3165   return 0;
3166 }
3167
3168
3169 /*
3170   DAC960_Finalize finalizes the DAC960 Driver.
3171 */
3172
3173 static void DAC960_Remove(struct pci_dev *PCI_Device)
3174 {
3175   int Controller_Number = (long)pci_get_drvdata(PCI_Device);
3176   DAC960_Controller_T *Controller = DAC960_Controllers[Controller_Number];
3177   if (Controller != NULL)
3178       DAC960_FinalizeController(Controller);
3179 }
3180
3181
3182 /*
3183   DAC960_V1_QueueReadWriteCommand prepares and queues a Read/Write Command for
3184   DAC960 V1 Firmware Controllers.
3185 */
3186
3187 static void DAC960_V1_QueueReadWriteCommand(DAC960_Command_T *Command)
3188 {
3189   DAC960_Controller_T *Controller = Command->Controller;
3190   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
3191   DAC960_V1_ScatterGatherSegment_T *ScatterGatherList =
3192                                         Command->V1.ScatterGatherList;
3193   struct scatterlist *ScatterList = Command->V1.ScatterList;
3194
3195   DAC960_V1_ClearCommand(Command);
3196
3197   if (Command->SegmentCount == 1)
3198     {
3199       if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3200         CommandMailbox->Type5.CommandOpcode = DAC960_V1_Read;
3201       else
3202         CommandMailbox->Type5.CommandOpcode = DAC960_V1_Write;
3203
3204       CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
3205       CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
3206       CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
3207       CommandMailbox->Type5.BusAddress =
3208                         (DAC960_BusAddress32_T)sg_dma_address(ScatterList);
3209     }
3210   else
3211     {
3212       int i;
3213
3214       if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3215         CommandMailbox->Type5.CommandOpcode = DAC960_V1_ReadWithScatterGather;
3216       else
3217         CommandMailbox->Type5.CommandOpcode = DAC960_V1_WriteWithScatterGather;
3218
3219       CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
3220       CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
3221       CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
3222       CommandMailbox->Type5.BusAddress = Command->V1.ScatterGatherListDMA;
3223
3224       CommandMailbox->Type5.ScatterGatherCount = Command->SegmentCount;
3225
3226       for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
3227                 ScatterGatherList->SegmentDataPointer =
3228                         (DAC960_BusAddress32_T)sg_dma_address(ScatterList);
3229                 ScatterGatherList->SegmentByteCount =
3230                         (DAC960_ByteCount32_T)sg_dma_len(ScatterList);
3231       }
3232     }
3233   DAC960_QueueCommand(Command);
3234 }
3235
3236
3237 /*
3238   DAC960_V2_QueueReadWriteCommand prepares and queues a Read/Write Command for
3239   DAC960 V2 Firmware Controllers.
3240 */
3241
3242 static void DAC960_V2_QueueReadWriteCommand(DAC960_Command_T *Command)
3243 {
3244   DAC960_Controller_T *Controller = Command->Controller;
3245   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
3246   struct scatterlist *ScatterList = Command->V2.ScatterList;
3247
3248   DAC960_V2_ClearCommand(Command);
3249
3250   CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10;
3251   CommandMailbox->SCSI_10.CommandControlBits.DataTransferControllerToHost =
3252     (Command->DmaDirection == PCI_DMA_FROMDEVICE);
3253   CommandMailbox->SCSI_10.DataTransferSize =
3254     Command->BlockCount << DAC960_BlockSizeBits;
3255   CommandMailbox->SCSI_10.RequestSenseBusAddress = Command->V2.RequestSenseDMA;
3256   CommandMailbox->SCSI_10.PhysicalDevice =
3257     Controller->V2.LogicalDriveToVirtualDevice[Command->LogicalDriveNumber];
3258   CommandMailbox->SCSI_10.RequestSenseSize = sizeof(DAC960_SCSI_RequestSense_T);
3259   CommandMailbox->SCSI_10.CDBLength = 10;
3260   CommandMailbox->SCSI_10.SCSI_CDB[0] =
3261     (Command->DmaDirection == PCI_DMA_FROMDEVICE ? 0x28 : 0x2A);
3262   CommandMailbox->SCSI_10.SCSI_CDB[2] = Command->BlockNumber >> 24;
3263   CommandMailbox->SCSI_10.SCSI_CDB[3] = Command->BlockNumber >> 16;
3264   CommandMailbox->SCSI_10.SCSI_CDB[4] = Command->BlockNumber >> 8;
3265   CommandMailbox->SCSI_10.SCSI_CDB[5] = Command->BlockNumber;
3266   CommandMailbox->SCSI_10.SCSI_CDB[7] = Command->BlockCount >> 8;
3267   CommandMailbox->SCSI_10.SCSI_CDB[8] = Command->BlockCount;
3268
3269   if (Command->SegmentCount == 1)
3270     {
3271       CommandMailbox->SCSI_10.DataTransferMemoryAddress
3272                              .ScatterGatherSegments[0]
3273                              .SegmentDataPointer =
3274         (DAC960_BusAddress64_T)sg_dma_address(ScatterList);
3275       CommandMailbox->SCSI_10.DataTransferMemoryAddress
3276                              .ScatterGatherSegments[0]
3277                              .SegmentByteCount =
3278         CommandMailbox->SCSI_10.DataTransferSize;
3279     }
3280   else
3281     {
3282       DAC960_V2_ScatterGatherSegment_T *ScatterGatherList;
3283       int i;
3284
3285       if (Command->SegmentCount > 2)
3286         {
3287           ScatterGatherList = Command->V2.ScatterGatherList;
3288           CommandMailbox->SCSI_10.CommandControlBits
3289                          .AdditionalScatterGatherListMemory = true;
3290           CommandMailbox->SCSI_10.DataTransferMemoryAddress
3291                 .ExtendedScatterGather.ScatterGatherList0Length = Command->SegmentCount;
3292           CommandMailbox->SCSI_10.DataTransferMemoryAddress
3293                          .ExtendedScatterGather.ScatterGatherList0Address =
3294             Command->V2.ScatterGatherListDMA;
3295         }
3296       else
3297         ScatterGatherList = CommandMailbox->SCSI_10.DataTransferMemoryAddress
3298                                  .ScatterGatherSegments;
3299
3300       for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
3301                 ScatterGatherList->SegmentDataPointer =
3302                         (DAC960_BusAddress64_T)sg_dma_address(ScatterList);
3303                 ScatterGatherList->SegmentByteCount =
3304                         (DAC960_ByteCount64_T)sg_dma_len(ScatterList);
3305       }
3306     }
3307   DAC960_QueueCommand(Command);
3308 }
3309
3310
3311 static int DAC960_process_queue(DAC960_Controller_T *Controller, struct request_queue *req_q)
3312 {
3313         struct request *Request;
3314         DAC960_Command_T *Command;
3315
3316    while(1) {
3317         Request = elv_next_request(req_q);
3318         if (!Request)
3319                 return 1;
3320
3321         Command = DAC960_AllocateCommand(Controller);
3322         if (Command == NULL)
3323                 return 0;
3324
3325         if (rq_data_dir(Request) == READ) {
3326                 Command->DmaDirection = PCI_DMA_FROMDEVICE;
3327                 Command->CommandType = DAC960_ReadCommand;
3328         } else {
3329                 Command->DmaDirection = PCI_DMA_TODEVICE;
3330                 Command->CommandType = DAC960_WriteCommand;
3331         }
3332         Command->Completion = Request->end_io_data;
3333         Command->LogicalDriveNumber = (long)Request->rq_disk->private_data;
3334         Command->BlockNumber = Request->sector;
3335         Command->BlockCount = Request->nr_sectors;
3336         Command->Request = Request;
3337         blkdev_dequeue_request(Request);
3338         Command->SegmentCount = blk_rq_map_sg(req_q,
3339                   Command->Request, Command->cmd_sglist);
3340         /* pci_map_sg MAY change the value of SegCount */
3341         Command->SegmentCount = pci_map_sg(Controller->PCIDevice, Command->cmd_sglist,
3342                  Command->SegmentCount, Command->DmaDirection);
3343
3344         DAC960_QueueReadWriteCommand(Command);
3345   }
3346 }
3347
3348 /*
3349   DAC960_ProcessRequest attempts to remove one I/O Request from Controller's
3350   I/O Request Queue and queues it to the Controller.  WaitForCommand is true if
3351   this function should wait for a Command to become available if necessary.
3352   This function returns true if an I/O Request was queued and false otherwise.
3353 */
3354 static void DAC960_ProcessRequest(DAC960_Controller_T *controller)
3355 {
3356         int i;
3357
3358         if (!controller->ControllerInitialized)
3359                 return;
3360
3361         /* Do this better later! */
3362         for (i = controller->req_q_index; i < DAC960_MaxLogicalDrives; i++) {
3363                 struct request_queue *req_q = controller->RequestQueue[i];
3364
3365                 if (req_q == NULL)
3366                         continue;
3367
3368                 if (!DAC960_process_queue(controller, req_q)) {
3369                         controller->req_q_index = i;
3370                         return;
3371                 }
3372         }
3373
3374         if (controller->req_q_index == 0)
3375                 return;
3376
3377         for (i = 0; i < controller->req_q_index; i++) {
3378                 struct request_queue *req_q = controller->RequestQueue[i];
3379
3380                 if (req_q == NULL)
3381                         continue;
3382
3383                 if (!DAC960_process_queue(controller, req_q)) {
3384                         controller->req_q_index = i;
3385                         return;
3386                 }
3387         }
3388 }
3389
3390
3391 /*
3392   DAC960_queue_partial_rw extracts one bio from the request already
3393   associated with argument command, and construct a new command block to retry I/O
3394   only on that bio.  Queue that command to the controller.
3395
3396   This function re-uses a previously-allocated Command,
3397         there is no failure mode from trying to allocate a command.
3398 */
3399
3400 static void DAC960_queue_partial_rw(DAC960_Command_T *Command)
3401 {
3402   DAC960_Controller_T *Controller = Command->Controller;
3403   struct request *Request = Command->Request;
3404   struct request_queue *req_q = Controller->RequestQueue[Command->LogicalDriveNumber];
3405
3406   if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3407     Command->CommandType = DAC960_ReadRetryCommand;
3408   else
3409     Command->CommandType = DAC960_WriteRetryCommand;
3410
3411   /*
3412    * We could be more efficient with these mapping requests
3413    * and map only the portions that we need.  But since this
3414    * code should almost never be called, just go with a
3415    * simple coding.
3416    */
3417   (void)blk_rq_map_sg(req_q, Command->Request, Command->cmd_sglist);
3418
3419   (void)pci_map_sg(Controller->PCIDevice, Command->cmd_sglist, 1, Command->DmaDirection);
3420   /*
3421    * Resubmitting the request sector at a time is really tedious.
3422    * But, this should almost never happen.  So, we're willing to pay
3423    * this price so that in the end, as much of the transfer is completed
3424    * successfully as possible.
3425    */
3426   Command->SegmentCount = 1;
3427   Command->BlockNumber = Request->sector;
3428   Command->BlockCount = 1;
3429   DAC960_QueueReadWriteCommand(Command);
3430   return;
3431 }
3432
3433 /*
3434   DAC960_RequestFunction is the I/O Request Function for DAC960 Controllers.
3435 */
3436
3437 static void DAC960_RequestFunction(struct request_queue *RequestQueue)
3438 {
3439         DAC960_ProcessRequest(RequestQueue->queuedata);
3440 }
3441
3442 /*
3443   DAC960_ProcessCompletedBuffer performs completion processing for an
3444   individual Buffer.
3445 */
3446
3447 static inline bool DAC960_ProcessCompletedRequest(DAC960_Command_T *Command,
3448                                                  bool SuccessfulIO)
3449 {
3450         struct request *Request = Command->Request;
3451         int UpToDate;
3452
3453         UpToDate = 0;
3454         if (SuccessfulIO)
3455                 UpToDate = 1;
3456
3457         pci_unmap_sg(Command->Controller->PCIDevice, Command->cmd_sglist,
3458                 Command->SegmentCount, Command->DmaDirection);
3459
3460          if (!end_that_request_first(Request, UpToDate, Command->BlockCount)) {
3461                 add_disk_randomness(Request->rq_disk);
3462                 end_that_request_last(Request, UpToDate);
3463
3464                 if (Command->Completion) {
3465                         complete(Command->Completion);
3466                         Command->Completion = NULL;
3467                 }
3468                 return true;
3469         }
3470         return false;
3471 }
3472
3473 /*
3474   DAC960_V1_ReadWriteError prints an appropriate error message for Command
3475   when an error occurs on a Read or Write operation.
3476 */
3477
3478 static void DAC960_V1_ReadWriteError(DAC960_Command_T *Command)
3479 {
3480   DAC960_Controller_T *Controller = Command->Controller;
3481   unsigned char *CommandName = "UNKNOWN";
3482   switch (Command->CommandType)
3483     {
3484     case DAC960_ReadCommand:
3485     case DAC960_ReadRetryCommand:
3486       CommandName = "READ";
3487       break;
3488     case DAC960_WriteCommand:
3489     case DAC960_WriteRetryCommand:
3490       CommandName = "WRITE";
3491       break;
3492     case DAC960_MonitoringCommand:
3493     case DAC960_ImmediateCommand:
3494     case DAC960_QueuedCommand:
3495       break;
3496     }
3497   switch (Command->V1.CommandStatus)
3498     {
3499     case DAC960_V1_IrrecoverableDataError:
3500       DAC960_Error("Irrecoverable Data Error on %s:\n",
3501                    Controller, CommandName);
3502       break;
3503     case DAC960_V1_LogicalDriveNonexistentOrOffline:
3504       DAC960_Error("Logical Drive Nonexistent or Offline on %s:\n",
3505                    Controller, CommandName);
3506       break;
3507     case DAC960_V1_AccessBeyondEndOfLogicalDrive:
3508       DAC960_Error("Attempt to Access Beyond End of Logical Drive "
3509                    "on %s:\n", Controller, CommandName);
3510       break;
3511     case DAC960_V1_BadDataEncountered:
3512       DAC960_Error("Bad Data Encountered on %s:\n", Controller, CommandName);
3513       break;
3514     default:
3515       DAC960_Error("Unexpected Error Status %04X on %s:\n",
3516                    Controller, Command->V1.CommandStatus, CommandName);
3517       break;
3518     }
3519   DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
3520                Controller, Controller->ControllerNumber,
3521                Command->LogicalDriveNumber, Command->BlockNumber,
3522                Command->BlockNumber + Command->BlockCount - 1);
3523 }
3524
3525
3526 /*
3527   DAC960_V1_ProcessCompletedCommand performs completion processing for Command
3528   for DAC960 V1 Firmware Controllers.
3529 */
3530
3531 static void DAC960_V1_ProcessCompletedCommand(DAC960_Command_T *Command)
3532 {
3533   DAC960_Controller_T *Controller = Command->Controller;
3534   DAC960_CommandType_T CommandType = Command->CommandType;
3535   DAC960_V1_CommandOpcode_T CommandOpcode =
3536     Command->V1.CommandMailbox.Common.CommandOpcode;
3537   DAC960_V1_CommandStatus_T CommandStatus = Command->V1.CommandStatus;
3538
3539   if (CommandType == DAC960_ReadCommand ||
3540       CommandType == DAC960_WriteCommand)
3541     {
3542
3543 #ifdef FORCE_RETRY_DEBUG
3544       CommandStatus = DAC960_V1_IrrecoverableDataError;
3545 #endif
3546
3547       if (CommandStatus == DAC960_V1_NormalCompletion) {
3548
3549                 if (!DAC960_ProcessCompletedRequest(Command, true))
3550                         BUG();
3551
3552       } else if (CommandStatus == DAC960_V1_IrrecoverableDataError ||
3553                 CommandStatus == DAC960_V1_BadDataEncountered)
3554         {
3555           /*
3556            * break the command down into pieces and resubmit each
3557            * piece, hoping that some of them will succeed.
3558            */
3559            DAC960_queue_partial_rw(Command);
3560            return;
3561         }
3562       else
3563         {
3564           if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
3565             DAC960_V1_ReadWriteError(Command);
3566
3567          if (!DAC960_ProcessCompletedRequest(Command, false))
3568                 BUG();
3569         }
3570     }
3571   else if (CommandType == DAC960_ReadRetryCommand ||
3572            CommandType == DAC960_WriteRetryCommand)
3573     {
3574       bool normal_completion;
3575 #ifdef FORCE_RETRY_FAILURE_DEBUG
3576       static int retry_count = 1;
3577 #endif
3578       /*
3579         Perform completion processing for the portion that was
3580         retried, and submit the next portion, if any.
3581       */
3582       normal_completion = true;
3583       if (CommandStatus != DAC960_V1_NormalCompletion) {
3584         normal_completion = false;
3585         if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
3586             DAC960_V1_ReadWriteError(Command);
3587       }
3588
3589 #ifdef FORCE_RETRY_FAILURE_DEBUG
3590       if (!(++retry_count % 10000)) {
3591               printk("V1 error retry failure test\n");
3592               normal_completion = false;
3593               DAC960_V1_ReadWriteError(Command);
3594       }
3595 #endif
3596
3597       if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
3598         DAC960_queue_partial_rw(Command);
3599         return;
3600       }
3601     }
3602
3603   else if (CommandType == DAC960_MonitoringCommand)
3604     {
3605       if (Controller->ShutdownMonitoringTimer)
3606               return;
3607       if (CommandOpcode == DAC960_V1_Enquiry)
3608         {
3609           DAC960_V1_Enquiry_T *OldEnquiry = &Controller->V1.Enquiry;
3610           DAC960_V1_Enquiry_T *NewEnquiry = Controller->V1.NewEnquiry;
3611           unsigned int OldCriticalLogicalDriveCount =
3612             OldEnquiry->CriticalLogicalDriveCount;
3613           unsigned int NewCriticalLogicalDriveCount =
3614             NewEnquiry->CriticalLogicalDriveCount;
3615           if (NewEnquiry->NumberOfLogicalDrives > Controller->LogicalDriveCount)
3616             {
3617               int LogicalDriveNumber = Controller->LogicalDriveCount - 1;
3618               while (++LogicalDriveNumber < NewEnquiry->NumberOfLogicalDrives)
3619                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3620                                 "Now Exists\n", Controller,
3621                                 LogicalDriveNumber,
3622                                 Controller->ControllerNumber,
3623                                 LogicalDriveNumber);
3624               Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
3625               DAC960_ComputeGenericDiskInfo(Controller);
3626             }
3627           if (NewEnquiry->NumberOfLogicalDrives < Controller->LogicalDriveCount)
3628             {
3629               int LogicalDriveNumber = NewEnquiry->NumberOfLogicalDrives - 1;
3630               while (++LogicalDriveNumber < Controller->LogicalDriveCount)
3631                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3632                                 "No Longer Exists\n", Controller,
3633                                 LogicalDriveNumber,
3634                                 Controller->ControllerNumber,
3635                                 LogicalDriveNumber);
3636               Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
3637               DAC960_ComputeGenericDiskInfo(Controller);
3638             }
3639           if (NewEnquiry->StatusFlags.DeferredWriteError !=
3640               OldEnquiry->StatusFlags.DeferredWriteError)
3641             DAC960_Critical("Deferred Write Error Flag is now %s\n", Controller,
3642                             (NewEnquiry->StatusFlags.DeferredWriteError
3643                              ? "TRUE" : "FALSE"));
3644           if ((NewCriticalLogicalDriveCount > 0 ||
3645                NewCriticalLogicalDriveCount != OldCriticalLogicalDriveCount) ||
3646               (NewEnquiry->OfflineLogicalDriveCount > 0 ||
3647                NewEnquiry->OfflineLogicalDriveCount !=
3648                OldEnquiry->OfflineLogicalDriveCount) ||
3649               (NewEnquiry->DeadDriveCount > 0 ||
3650                NewEnquiry->DeadDriveCount !=
3651                OldEnquiry->DeadDriveCount) ||
3652               (NewEnquiry->EventLogSequenceNumber !=
3653                OldEnquiry->EventLogSequenceNumber) ||
3654               Controller->MonitoringTimerCount == 0 ||
3655               time_after_eq(jiffies, Controller->SecondaryMonitoringTime
3656                + DAC960_SecondaryMonitoringInterval))
3657             {
3658               Controller->V1.NeedLogicalDriveInformation = true;
3659               Controller->V1.NewEventLogSequenceNumber =
3660                 NewEnquiry->EventLogSequenceNumber;
3661               Controller->V1.NeedErrorTableInformation = true;
3662               Controller->V1.NeedDeviceStateInformation = true;
3663               Controller->V1.StartDeviceStateScan = true;
3664               Controller->V1.NeedBackgroundInitializationStatus =
3665                 Controller->V1.BackgroundInitializationStatusSupported;
3666               Controller->SecondaryMonitoringTime = jiffies;
3667             }
3668           if (NewEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
3669               NewEnquiry->RebuildFlag
3670               == DAC960_V1_BackgroundRebuildInProgress ||
3671               OldEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
3672               OldEnquiry->RebuildFlag == DAC960_V1_BackgroundRebuildInProgress)
3673             {
3674               Controller->V1.NeedRebuildProgress = true;
3675               Controller->V1.RebuildProgressFirst =
3676                 (NewEnquiry->CriticalLogicalDriveCount <
3677                  OldEnquiry->CriticalLogicalDriveCount);
3678             }
3679           if (OldEnquiry->RebuildFlag == DAC960_V1_BackgroundCheckInProgress)
3680             switch (NewEnquiry->RebuildFlag)
3681               {
3682               case DAC960_V1_NoStandbyRebuildOrCheckInProgress:
3683                 DAC960_Progress("Consistency Check Completed Successfully\n",
3684                                 Controller);
3685                 break;
3686               case DAC960_V1_StandbyRebuildInProgress:
3687               case DAC960_V1_BackgroundRebuildInProgress:
3688                 break;
3689               case DAC960_V1_BackgroundCheckInProgress:
3690                 Controller->V1.NeedConsistencyCheckProgress = true;
3691                 break;
3692               case DAC960_V1_StandbyRebuildCompletedWithError:
3693                 DAC960_Progress("Consistency Check Completed with Error\n",
3694                                 Controller);
3695                 break;
3696               case DAC960_V1_BackgroundRebuildOrCheckFailed_DriveFailed:
3697                 DAC960_Progress("Consistency Check Failed - "
3698                                 "Physical Device Failed\n", Controller);
3699                 break;
3700               case DAC960_V1_BackgroundRebuildOrCheckFailed_LogicalDriveFailed:
3701                 DAC960_Progress("Consistency Check Failed - "
3702                                 "Logical Drive Failed\n", Controller);
3703                 break;
3704               case DAC960_V1_BackgroundRebuildOrCheckFailed_OtherCauses:
3705                 DAC960_Progress("Consistency Check Failed - Other Causes\n",
3706                                 Controller);
3707                 break;
3708               case DAC960_V1_BackgroundRebuildOrCheckSuccessfullyTerminated:
3709                 DAC960_Progress("Consistency Check Successfully Terminated\n",
3710                                 Controller);
3711                 break;
3712               }
3713           else if (NewEnquiry->RebuildFlag
3714                    == DAC960_V1_BackgroundCheckInProgress)
3715             Controller->V1.NeedConsistencyCheckProgress = true;
3716           Controller->MonitoringAlertMode =
3717             (NewEnquiry->CriticalLogicalDriveCount > 0 ||
3718              NewEnquiry->OfflineLogicalDriveCount > 0 ||
3719              NewEnquiry->DeadDriveCount > 0);
3720           if (NewEnquiry->RebuildFlag > DAC960_V1_BackgroundCheckInProgress)
3721             {
3722               Controller->V1.PendingRebuildFlag = NewEnquiry->RebuildFlag;
3723               Controller->V1.RebuildFlagPending = true;
3724             }
3725           memcpy(&Controller->V1.Enquiry, &Controller->V1.NewEnquiry,
3726                  sizeof(DAC960_V1_Enquiry_T));
3727         }
3728       else if (CommandOpcode == DAC960_V1_PerformEventLogOperation)
3729         {
3730           static char
3731             *DAC960_EventMessages[] =
3732                { "killed because write recovery failed",
3733                  "killed because of SCSI bus reset failure",
3734                  "killed because of double check condition",
3735                  "killed because it was removed",
3736                  "killed because of gross error on SCSI chip",
3737                  "killed because of bad tag returned from drive",
3738                  "killed because of timeout on SCSI command",
3739                  "killed because of reset SCSI command issued from system",
3740                  "killed because busy or parity error count exceeded limit",
3741                  "killed because of 'kill drive' command from system",
3742                  "killed because of selection timeout",
3743                  "killed due to SCSI phase sequence error",
3744                  "killed due to unknown status" };
3745           DAC960_V1_EventLogEntry_T *EventLogEntry =
3746                 Controller->V1.EventLogEntry;
3747           if (EventLogEntry->SequenceNumber ==
3748               Controller->V1.OldEventLogSequenceNumber)
3749             {
3750               unsigned char SenseKey = EventLogEntry->SenseKey;
3751               unsigned char AdditionalSenseCode =
3752                 EventLogEntry->AdditionalSenseCode;
3753               unsigned char AdditionalSenseCodeQualifier =
3754                 EventLogEntry->AdditionalSenseCodeQualifier;
3755               if (SenseKey == DAC960_SenseKey_VendorSpecific &&
3756                   AdditionalSenseCode == 0x80 &&
3757                   AdditionalSenseCodeQualifier <
3758                   ARRAY_SIZE(DAC960_EventMessages))
3759                 DAC960_Critical("Physical Device %d:%d %s\n", Controller,
3760                                 EventLogEntry->Channel,
3761                                 EventLogEntry->TargetID,
3762                                 DAC960_EventMessages[
3763                                   AdditionalSenseCodeQualifier]);
3764               else if (SenseKey == DAC960_SenseKey_UnitAttention &&
3765                        AdditionalSenseCode == 0x29)
3766                 {
3767                   if (Controller->MonitoringTimerCount > 0)
3768                     Controller->V1.DeviceResetCount[EventLogEntry->Channel]
3769                                                    [EventLogEntry->TargetID]++;
3770                 }
3771               else if (!(SenseKey == DAC960_SenseKey_NoSense ||
3772                          (SenseKey == DAC960_SenseKey_NotReady &&
3773                           AdditionalSenseCode == 0x04 &&
3774                           (AdditionalSenseCodeQualifier == 0x01 ||
3775                            AdditionalSenseCodeQualifier == 0x02))))
3776                 {
3777                   DAC960_Critical("Physical Device %d:%d Error Log: "
3778                                   "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
3779                                   Controller,
3780                                   EventLogEntry->Channel,
3781                                   EventLogEntry->TargetID,
3782                                   SenseKey,
3783                                   AdditionalSenseCode,
3784                                   AdditionalSenseCodeQualifier);
3785                   DAC960_Critical("Physical Device %d:%d Error Log: "
3786                                   "Information = %02X%02X%02X%02X "
3787                                   "%02X%02X%02X%02X\n",
3788                                   Controller,
3789                                   EventLogEntry->Channel,
3790                                   EventLogEntry->TargetID,
3791                                   EventLogEntry->Information[0],
3792                                   EventLogEntry->Information[1],
3793                                   EventLogEntry->Information[2],
3794                                   EventLogEntry->Information[3],
3795                                   EventLogEntry->CommandSpecificInformation[0],
3796                                   EventLogEntry->CommandSpecificInformation[1],
3797                                   EventLogEntry->CommandSpecificInformation[2],
3798                                   EventLogEntry->CommandSpecificInformation[3]);
3799                 }
3800             }
3801           Controller->V1.OldEventLogSequenceNumber++;
3802         }
3803       else if (CommandOpcode == DAC960_V1_GetErrorTable)
3804         {
3805           DAC960_V1_ErrorTable_T *OldErrorTable = &Controller->V1.ErrorTable;
3806           DAC960_V1_ErrorTable_T *NewErrorTable = Controller->V1.NewErrorTable;
3807           int Channel, TargetID;
3808           for (Channel = 0; Channel < Controller->Channels; Channel++)
3809             for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
3810               {
3811                 DAC960_V1_ErrorTableEntry_T *NewErrorEntry =
3812                   &NewErrorTable->ErrorTableEntries[Channel][TargetID];
3813                 DAC960_V1_ErrorTableEntry_T *OldErrorEntry =
3814                   &OldErrorTable->ErrorTableEntries[Channel][TargetID];
3815                 if ((NewErrorEntry->ParityErrorCount !=
3816                      OldErrorEntry->ParityErrorCount) ||
3817                     (NewErrorEntry->SoftErrorCount !=
3818                      OldErrorEntry->SoftErrorCount) ||
3819                     (NewErrorEntry->HardErrorCount !=
3820                      OldErrorEntry->HardErrorCount) ||
3821                     (NewErrorEntry->MiscErrorCount !=
3822                      OldErrorEntry->MiscErrorCount))
3823                   DAC960_Critical("Physical Device %d:%d Errors: "
3824                                   "Parity = %d, Soft = %d, "
3825                                   "Hard = %d, Misc = %d\n",
3826                                   Controller, Channel, TargetID,
3827                                   NewErrorEntry->ParityErrorCount,
3828                                   NewErrorEntry->SoftErrorCount,
3829                                   NewErrorEntry->HardErrorCount,
3830                                   NewErrorEntry->MiscErrorCount);
3831               }
3832           memcpy(&Controller->V1.ErrorTable, Controller->V1.NewErrorTable,
3833                  sizeof(DAC960_V1_ErrorTable_T));
3834         }
3835       else if (CommandOpcode == DAC960_V1_GetDeviceState)
3836         {
3837           DAC960_V1_DeviceState_T *OldDeviceState =
3838             &Controller->V1.DeviceState[Controller->V1.DeviceStateChannel]
3839                                        [Controller->V1.DeviceStateTargetID];
3840           DAC960_V1_DeviceState_T *NewDeviceState =
3841             Controller->V1.NewDeviceState;
3842           if (NewDeviceState->DeviceState != OldDeviceState->DeviceState)
3843             DAC960_Critical("Physical Device %d:%d is now %s\n", Controller,
3844                             Controller->V1.DeviceStateChannel,
3845                             Controller->V1.DeviceStateTargetID,
3846                             (NewDeviceState->DeviceState
3847                              == DAC960_V1_Device_Dead
3848                              ? "DEAD"
3849                              : NewDeviceState->DeviceState
3850                                == DAC960_V1_Device_WriteOnly
3851                                ? "WRITE-ONLY"
3852                                : NewDeviceState->DeviceState
3853                                  == DAC960_V1_Device_Online
3854                                  ? "ONLINE" : "STANDBY"));
3855           if (OldDeviceState->DeviceState == DAC960_V1_Device_Dead &&
3856               NewDeviceState->DeviceState != DAC960_V1_Device_Dead)
3857             {
3858               Controller->V1.NeedDeviceInquiryInformation = true;
3859               Controller->V1.NeedDeviceSerialNumberInformation = true;
3860               Controller->V1.DeviceResetCount
3861                              [Controller->V1.DeviceStateChannel]
3862                              [Controller->V1.DeviceStateTargetID] = 0;
3863             }
3864           memcpy(OldDeviceState, NewDeviceState,
3865                  sizeof(DAC960_V1_DeviceState_T));
3866         }
3867       else if (CommandOpcode == DAC960_V1_GetLogicalDriveInformation)
3868         {
3869           int LogicalDriveNumber;
3870           for (LogicalDriveNumber = 0;
3871                LogicalDriveNumber < Controller->LogicalDriveCount;
3872                LogicalDriveNumber++)
3873             {
3874               DAC960_V1_LogicalDriveInformation_T *OldLogicalDriveInformation =
3875                 &Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
3876               DAC960_V1_LogicalDriveInformation_T *NewLogicalDriveInformation =
3877                 &(*Controller->V1.NewLogicalDriveInformation)[LogicalDriveNumber];
3878               if (NewLogicalDriveInformation->LogicalDriveState !=
3879                   OldLogicalDriveInformation->LogicalDriveState)
3880                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3881                                 "is now %s\n", Controller,
3882                                 LogicalDriveNumber,
3883                                 Controller->ControllerNumber,
3884                                 LogicalDriveNumber,
3885                                 (NewLogicalDriveInformation->LogicalDriveState
3886                                  == DAC960_V1_LogicalDrive_Online
3887                                  ? "ONLINE"
3888                                  : NewLogicalDriveInformation->LogicalDriveState
3889                                    == DAC960_V1_LogicalDrive_Critical
3890                                    ? "CRITICAL" : "OFFLINE"));
3891               if (NewLogicalDriveInformation->WriteBack !=
3892                   OldLogicalDriveInformation->WriteBack)
3893                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3894                                 "is now %s\n", Controller,
3895                                 LogicalDriveNumber,
3896                                 Controller->ControllerNumber,
3897                                 LogicalDriveNumber,
3898                                 (NewLogicalDriveInformation->WriteBack
3899                                  ? "WRITE BACK" : "WRITE THRU"));
3900             }
3901           memcpy(&Controller->V1.LogicalDriveInformation,
3902                  Controller->V1.NewLogicalDriveInformation,
3903                  sizeof(DAC960_V1_LogicalDriveInformationArray_T));
3904         }
3905       else if (CommandOpcode == DAC960_V1_GetRebuildProgress)
3906         {
3907           unsigned int LogicalDriveNumber =
3908             Controller->V1.RebuildProgress->LogicalDriveNumber;
3909           unsigned int LogicalDriveSize =
3910             Controller->V1.RebuildProgress->LogicalDriveSize;
3911           unsigned int BlocksCompleted =
3912             LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
3913           if (CommandStatus == DAC960_V1_NoRebuildOrCheckInProgress &&
3914               Controller->V1.LastRebuildStatus == DAC960_V1_NormalCompletion)
3915             CommandStatus = DAC960_V1_RebuildSuccessful;
3916           switch (CommandStatus)
3917             {
3918             case DAC960_V1_NormalCompletion:
3919               Controller->EphemeralProgressMessage = true;
3920               DAC960_Progress("Rebuild in Progress: "
3921                               "Logical Drive %d (/dev/rd/c%dd%d) "
3922                               "%d%% completed\n",
3923                               Controller, LogicalDriveNumber,
3924                               Controller->ControllerNumber,
3925                               LogicalDriveNumber,
3926                               (100 * (BlocksCompleted >> 7))
3927                               / (LogicalDriveSize >> 7));
3928               Controller->EphemeralProgressMessage = false;
3929               break;
3930             case DAC960_V1_RebuildFailed_LogicalDriveFailure:
3931               DAC960_Progress("Rebuild Failed due to "
3932                               "Logical Drive Failure\n", Controller);
3933               break;
3934             case DAC960_V1_RebuildFailed_BadBlocksOnOther:
3935               DAC960_Progress("Rebuild Failed due to "
3936                               "Bad Blocks on Other Drives\n", Controller);
3937               break;
3938             case DAC960_V1_RebuildFailed_NewDriveFailed:
3939               DAC960_Progress("Rebuild Failed due to "
3940                               "Failure of Drive Being Rebuilt\n", Controller);
3941               break;
3942             case DAC960_V1_NoRebuildOrCheckInProgress:
3943               break;
3944             case DAC960_V1_RebuildSuccessful:
3945               DAC960_Progress("Rebuild Completed Successfully\n", Controller);
3946               break;
3947             case DAC960_V1_RebuildSuccessfullyTerminated:
3948               DAC960_Progress("Rebuild Successfully Terminated\n", Controller);
3949               break;
3950             }
3951           Controller->V1.LastRebuildStatus = CommandStatus;
3952           if (CommandType != DAC960_MonitoringCommand &&
3953               Controller->V1.RebuildStatusPending)
3954             {
3955               Command->V1.CommandStatus = Controller->V1.PendingRebuildStatus;
3956               Controller->V1.RebuildStatusPending = false;
3957             }
3958           else if (CommandType == DAC960_MonitoringCommand &&
3959                    CommandStatus != DAC960_V1_NormalCompletion &&
3960                    CommandStatus != DAC960_V1_NoRebuildOrCheckInProgress)
3961             {
3962               Controller->V1.PendingRebuildStatus = CommandStatus;
3963               Controller->V1.RebuildStatusPending = true;
3964             }
3965         }
3966       else if (CommandOpcode == DAC960_V1_RebuildStat)
3967         {
3968           unsigned int LogicalDriveNumber =
3969             Controller->V1.RebuildProgress->LogicalDriveNumber;
3970           unsigned int LogicalDriveSize =
3971             Controller->V1.RebuildProgress->LogicalDriveSize;
3972           unsigned int BlocksCompleted =
3973             LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
3974           if (CommandStatus == DAC960_V1_NormalCompletion)
3975             {
3976               Controller->EphemeralProgressMessage = true;
3977               DAC960_Progress("Consistency Check in Progress: "
3978                               "Logical Drive %d (/dev/rd/c%dd%d) "
3979                               "%d%% completed\n",
3980                               Controller, LogicalDriveNumber,
3981                               Controller->ControllerNumber,
3982                               LogicalDriveNumber,
3983                               (100 * (BlocksCompleted >> 7))
3984                               / (LogicalDriveSize >> 7));
3985               Controller->EphemeralProgressMessage = false;
3986             }
3987         }
3988       else if (CommandOpcode == DAC960_V1_BackgroundInitializationControl)
3989         {
3990           unsigned int LogicalDriveNumber =
3991             Controller->V1.BackgroundInitializationStatus->LogicalDriveNumber;
3992           unsigned int LogicalDriveSize =
3993             Controller->V1.BackgroundInitializationStatus->LogicalDriveSize;
3994           unsigned int BlocksCompleted =
3995             Controller->V1.BackgroundInitializationStatus->BlocksCompleted;
3996           switch (CommandStatus)
3997             {
3998             case DAC960_V1_NormalCompletion:
3999               switch (Controller->V1.BackgroundInitializationStatus->Status)
4000                 {
4001                 case DAC960_V1_BackgroundInitializationInvalid:
4002                   break;
4003                 case DAC960_V1_BackgroundInitializationStarted:
4004                   DAC960_Progress("Background Initialization Started\n",
4005                                   Controller);
4006                   break;
4007                 case DAC960_V1_BackgroundInitializationInProgress:
4008                   if (BlocksCompleted ==
4009                       Controller->V1.LastBackgroundInitializationStatus.
4010                                 BlocksCompleted &&
4011                       LogicalDriveNumber ==
4012                       Controller->V1.LastBackgroundInitializationStatus.
4013                                 LogicalDriveNumber)
4014                     break;
4015                   Controller->EphemeralProgressMessage = true;
4016                   DAC960_Progress("Background Initialization in Progress: "
4017                                   "Logical Drive %d (/dev/rd/c%dd%d) "
4018                                   "%d%% completed\n",
4019                                   Controller, LogicalDriveNumber,
4020                                   Controller->ControllerNumber,
4021                                   LogicalDriveNumber,
4022                                   (100 * (BlocksCompleted >> 7))
4023                                   / (LogicalDriveSize >> 7));
4024                   Controller->EphemeralProgressMessage = false;
4025                   break;
4026                 case DAC960_V1_BackgroundInitializationSuspended:
4027                   DAC960_Progress("Background Initialization Suspended\n",
4028                                   Controller);
4029                   break;
4030                 case DAC960_V1_BackgroundInitializationCancelled:
4031                   DAC960_Progress("Background Initialization Cancelled\n",
4032                                   Controller);
4033                   break;
4034                 }
4035               memcpy(&Controller->V1.LastBackgroundInitializationStatus,
4036                      Controller->V1.BackgroundInitializationStatus,
4037                      sizeof(DAC960_V1_BackgroundInitializationStatus_T));
4038               break;
4039             case DAC960_V1_BackgroundInitSuccessful:
4040               if (Controller->V1.BackgroundInitializationStatus->Status ==
4041                   DAC960_V1_BackgroundInitializationInProgress)
4042                 DAC960_Progress("Background Initialization "
4043                                 "Completed Successfully\n", Controller);
4044               Controller->V1.BackgroundInitializationStatus->Status =
4045                 DAC960_V1_BackgroundInitializationInvalid;
4046               break;
4047             case DAC960_V1_BackgroundInitAborted:
4048               if (Controller->V1.BackgroundInitializationStatus->Status ==
4049                   DAC960_V1_BackgroundInitializationInProgress)
4050                 DAC960_Progress("Background Initialization Aborted\n",
4051                                 Controller);
4052               Controller->V1.BackgroundInitializationStatus->Status =
4053                 DAC960_V1_BackgroundInitializationInvalid;
4054               break;
4055             case DAC960_V1_NoBackgroundInitInProgress:
4056               break;
4057             }
4058         }
4059       else if (CommandOpcode == DAC960_V1_DCDB)
4060         {
4061            /*
4062              This is a bit ugly.
4063
4064              The InquiryStandardData and
4065              the InquiryUntitSerialNumber information
4066              retrieval operations BOTH use the DAC960_V1_DCDB
4067              commands.  the test above can't distinguish between
4068              these two cases.
4069
4070              Instead, we rely on the order of code later in this
4071              function to ensure that DeviceInquiryInformation commands
4072              are submitted before DeviceSerialNumber commands.
4073            */
4074            if (Controller->V1.NeedDeviceInquiryInformation)
4075              {
4076                 DAC960_SCSI_Inquiry_T *InquiryStandardData =
4077                         &Controller->V1.InquiryStandardData
4078                                 [Controller->V1.DeviceStateChannel]
4079                                 [Controller->V1.DeviceStateTargetID];
4080                 if (CommandStatus != DAC960_V1_NormalCompletion)
4081                    {
4082                         memset(InquiryStandardData, 0,
4083                                 sizeof(DAC960_SCSI_Inquiry_T));
4084                         InquiryStandardData->PeripheralDeviceType = 0x1F;
4085                     }
4086                  else
4087                         memcpy(InquiryStandardData,
4088                                 Controller->V1.NewInquiryStandardData,
4089                                 sizeof(DAC960_SCSI_Inquiry_T));
4090                  Controller->V1.NeedDeviceInquiryInformation = false;
4091               }
4092            else if (Controller->V1.NeedDeviceSerialNumberInformation)
4093               {
4094                 DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4095                   &Controller->V1.InquiryUnitSerialNumber
4096                                 [Controller->V1.DeviceStateChannel]
4097                                 [Controller->V1.DeviceStateTargetID];
4098                  if (CommandStatus != DAC960_V1_NormalCompletion)
4099                    {
4100                         memset(InquiryUnitSerialNumber, 0,
4101                                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4102                         InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
4103                     }
4104                   else
4105                         memcpy(InquiryUnitSerialNumber,
4106                                 Controller->V1.NewInquiryUnitSerialNumber,
4107                                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4108               Controller->V1.NeedDeviceSerialNumberInformation = false;
4109              }
4110         }
4111       /*
4112         Begin submitting new monitoring commands.
4113        */
4114       if (Controller->V1.NewEventLogSequenceNumber
4115           - Controller->V1.OldEventLogSequenceNumber > 0)
4116         {
4117           Command->V1.CommandMailbox.Type3E.CommandOpcode =
4118             DAC960_V1_PerformEventLogOperation;
4119           Command->V1.CommandMailbox.Type3E.OperationType =
4120             DAC960_V1_GetEventLogEntry;
4121           Command->V1.CommandMailbox.Type3E.OperationQualifier = 1;
4122           Command->V1.CommandMailbox.Type3E.SequenceNumber =
4123             Controller->V1.OldEventLogSequenceNumber;
4124           Command->V1.CommandMailbox.Type3E.BusAddress =
4125                 Controller->V1.EventLogEntryDMA;
4126           DAC960_QueueCommand(Command);
4127           return;
4128         }
4129       if (Controller->V1.NeedErrorTableInformation)
4130         {
4131           Controller->V1.NeedErrorTableInformation = false;
4132           Command->V1.CommandMailbox.Type3.CommandOpcode =
4133             DAC960_V1_GetErrorTable;
4134           Command->V1.CommandMailbox.Type3.BusAddress =
4135                 Controller->V1.NewErrorTableDMA;
4136           DAC960_QueueCommand(Command);
4137           return;
4138         }
4139       if (Controller->V1.NeedRebuildProgress &&
4140           Controller->V1.RebuildProgressFirst)
4141         {
4142           Controller->V1.NeedRebuildProgress = false;
4143           Command->V1.CommandMailbox.Type3.CommandOpcode =
4144             DAC960_V1_GetRebuildProgress;
4145           Command->V1.CommandMailbox.Type3.BusAddress =
4146             Controller->V1.RebuildProgressDMA;
4147           DAC960_QueueCommand(Command);
4148           return;
4149         }
4150       if (Controller->V1.NeedDeviceStateInformation)
4151         {
4152           if (Controller->V1.NeedDeviceInquiryInformation)
4153             {
4154               DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
4155               dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
4156
4157               dma_addr_t NewInquiryStandardDataDMA =
4158                 Controller->V1.NewInquiryStandardDataDMA;
4159
4160               Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
4161               Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
4162               DCDB->Channel = Controller->V1.DeviceStateChannel;
4163               DCDB->TargetID = Controller->V1.DeviceStateTargetID;
4164               DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
4165               DCDB->EarlyStatus = false;
4166               DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
4167               DCDB->NoAutomaticRequestSense = false;
4168               DCDB->DisconnectPermitted = true;
4169               DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
4170               DCDB->BusAddress = NewInquiryStandardDataDMA;
4171               DCDB->CDBLength = 6;
4172               DCDB->TransferLengthHigh4 = 0;
4173               DCDB->SenseLength = sizeof(DCDB->SenseData);
4174               DCDB->CDB[0] = 0x12; /* INQUIRY */
4175               DCDB->CDB[1] = 0; /* EVPD = 0 */
4176               DCDB->CDB[2] = 0; /* Page Code */
4177               DCDB->CDB[3] = 0; /* Reserved */
4178               DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
4179               DCDB->CDB[5] = 0; /* Control */
4180               DAC960_QueueCommand(Command);
4181               return;
4182             }
4183           if (Controller->V1.NeedDeviceSerialNumberInformation)
4184             {
4185               DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
4186               dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
4187               dma_addr_t NewInquiryUnitSerialNumberDMA =
4188                         Controller->V1.NewInquiryUnitSerialNumberDMA;
4189
4190               Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
4191               Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
4192               DCDB->Channel = Controller->V1.DeviceStateChannel;
4193               DCDB->TargetID = Controller->V1.DeviceStateTargetID;
4194               DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
4195               DCDB->EarlyStatus = false;
4196               DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
4197               DCDB->NoAutomaticRequestSense = false;
4198               DCDB->DisconnectPermitted = true;
4199               DCDB->TransferLength =
4200                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
4201               DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
4202               DCDB->CDBLength = 6;
4203               DCDB->TransferLengthHigh4 = 0;
4204               DCDB->SenseLength = sizeof(DCDB->SenseData);
4205               DCDB->CDB[0] = 0x12; /* INQUIRY */
4206               DCDB->CDB[1] = 1; /* EVPD = 1 */
4207               DCDB->CDB[2] = 0x80; /* Page Code */
4208               DCDB->CDB[3] = 0; /* Reserved */
4209               DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
4210               DCDB->CDB[5] = 0; /* Control */
4211               DAC960_QueueCommand(Command);
4212               return;
4213             }
4214           if (Controller->V1.StartDeviceStateScan)
4215             {
4216               Controller->V1.DeviceStateChannel = 0;
4217               Controller->V1.DeviceStateTargetID = 0;
4218               Controller->V1.StartDeviceStateScan = false;
4219             }
4220           else if (++Controller->V1.DeviceStateTargetID == Controller->Targets)
4221             {
4222               Controller->V1.DeviceStateChannel++;
4223               Controller->V1.DeviceStateTargetID = 0;
4224             }
4225           if (Controller->V1.DeviceStateChannel < Controller->Channels)
4226             {
4227               Controller->V1.NewDeviceState->DeviceState =
4228                 DAC960_V1_Device_Dead;
4229               Command->V1.CommandMailbox.Type3D.CommandOpcode =
4230                 DAC960_V1_GetDeviceState;
4231               Command->V1.CommandMailbox.Type3D.Channel =
4232                 Controller->V1.DeviceStateChannel;
4233               Command->V1.CommandMailbox.Type3D.TargetID =
4234                 Controller->V1.DeviceStateTargetID;
4235               Command->V1.CommandMailbox.Type3D.BusAddress =
4236                 Controller->V1.NewDeviceStateDMA;
4237               DAC960_QueueCommand(Command);
4238               return;
4239             }
4240           Controller->V1.NeedDeviceStateInformation = false;
4241         }
4242       if (Controller->V1.NeedLogicalDriveInformation)
4243         {
4244           Controller->V1.NeedLogicalDriveInformation = false;
4245           Command->V1.CommandMailbox.Type3.CommandOpcode =
4246             DAC960_V1_GetLogicalDriveInformation;
4247           Command->V1.CommandMailbox.Type3.BusAddress =
4248             Controller->V1.NewLogicalDriveInformationDMA;
4249           DAC960_QueueCommand(Command);
4250           return;
4251         }
4252       if (Controller->V1.NeedRebuildProgress)
4253         {
4254           Controller->V1.NeedRebuildProgress = false;
4255           Command->V1.CommandMailbox.Type3.CommandOpcode =
4256             DAC960_V1_GetRebuildProgress;
4257           Command->V1.CommandMailbox.Type3.BusAddress =
4258                 Controller->V1.RebuildProgressDMA;
4259           DAC960_QueueCommand(Command);
4260           return;
4261         }
4262       if (Controller->V1.NeedConsistencyCheckProgress)
4263         {
4264           Controller->V1.NeedConsistencyCheckProgress = false;
4265           Command->V1.CommandMailbox.Type3.CommandOpcode =
4266             DAC960_V1_RebuildStat;
4267           Command->V1.CommandMailbox.Type3.BusAddress =
4268             Controller->V1.RebuildProgressDMA;
4269           DAC960_QueueCommand(Command);
4270           return;
4271         }
4272       if (Controller->V1.NeedBackgroundInitializationStatus)
4273         {
4274           Controller->V1.NeedBackgroundInitializationStatus = false;
4275           Command->V1.CommandMailbox.Type3B.CommandOpcode =
4276             DAC960_V1_BackgroundInitializationControl;
4277           Command->V1.CommandMailbox.Type3B.CommandOpcode2 = 0x20;
4278           Command->V1.CommandMailbox.Type3B.BusAddress =
4279             Controller->V1.BackgroundInitializationStatusDMA;
4280           DAC960_QueueCommand(Command);
4281           return;
4282         }
4283       Controller->MonitoringTimerCount++;
4284       Controller->MonitoringTimer.expires =
4285         jiffies + DAC960_MonitoringTimerInterval;
4286         add_timer(&Controller->MonitoringTimer);
4287     }
4288   if (CommandType == DAC960_ImmediateCommand)
4289     {
4290       complete(Command->Completion);
4291       Command->Completion = NULL;
4292       return;
4293     }
4294   if (CommandType == DAC960_QueuedCommand)
4295     {
4296       DAC960_V1_KernelCommand_T *KernelCommand = Command->V1.KernelCommand;
4297       KernelCommand->CommandStatus = Command->V1.CommandStatus;
4298       Command->V1.KernelCommand = NULL;
4299       if (CommandOpcode == DAC960_V1_DCDB)
4300         Controller->V1.DirectCommandActive[KernelCommand->DCDB->Channel]
4301                                           [KernelCommand->DCDB->TargetID] =
4302           false;
4303       DAC960_DeallocateCommand(Command);
4304       KernelCommand->CompletionFunction(KernelCommand);
4305       return;
4306     }
4307   /*
4308     Queue a Status Monitoring Command to the Controller using the just
4309     completed Command if one was deferred previously due to lack of a
4310     free Command when the Monitoring Timer Function was called.
4311   */
4312   if (Controller->MonitoringCommandDeferred)
4313     {
4314       Controller->MonitoringCommandDeferred = false;
4315       DAC960_V1_QueueMonitoringCommand(Command);
4316       return;
4317     }
4318   /*
4319     Deallocate the Command.
4320   */
4321   DAC960_DeallocateCommand(Command);
4322   /*
4323     Wake up any processes waiting on a free Command.
4324   */
4325   wake_up(&Controller->CommandWaitQueue);
4326 }
4327
4328
4329 /*
4330   DAC960_V2_ReadWriteError prints an appropriate error message for Command
4331   when an error occurs on a Read or Write operation.
4332 */
4333
4334 static void DAC960_V2_ReadWriteError(DAC960_Command_T *Command)
4335 {
4336   DAC960_Controller_T *Controller = Command->Controller;
4337   unsigned char *SenseErrors[] = { "NO SENSE", "RECOVERED ERROR",
4338                                    "NOT READY", "MEDIUM ERROR",
4339                                    "HARDWARE ERROR", "ILLEGAL REQUEST",
4340                                    "UNIT ATTENTION", "DATA PROTECT",
4341                                    "BLANK CHECK", "VENDOR-SPECIFIC",
4342                                    "COPY ABORTED", "ABORTED COMMAND",
4343                                    "EQUAL", "VOLUME OVERFLOW",
4344                                    "MISCOMPARE", "RESERVED" };
4345   unsigned char *CommandName = "UNKNOWN";
4346   switch (Command->CommandType)
4347     {
4348     case DAC960_ReadCommand:
4349     case DAC960_ReadRetryCommand:
4350       CommandName = "READ";
4351       break;
4352     case DAC960_WriteCommand:
4353     case DAC960_WriteRetryCommand:
4354       CommandName = "WRITE";
4355       break;
4356     case DAC960_MonitoringCommand:
4357     case DAC960_ImmediateCommand:
4358     case DAC960_QueuedCommand:
4359       break;
4360     }
4361   DAC960_Error("Error Condition %s on %s:\n", Controller,
4362                SenseErrors[Command->V2.RequestSense->SenseKey], CommandName);
4363   DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
4364                Controller, Controller->ControllerNumber,
4365                Command->LogicalDriveNumber, Command->BlockNumber,
4366                Command->BlockNumber + Command->BlockCount - 1);
4367 }
4368
4369
4370 /*
4371   DAC960_V2_ReportEvent prints an appropriate message when a Controller Event
4372   occurs.
4373 */
4374
4375 static void DAC960_V2_ReportEvent(DAC960_Controller_T *Controller,
4376                                   DAC960_V2_Event_T *Event)
4377 {
4378   DAC960_SCSI_RequestSense_T *RequestSense =
4379     (DAC960_SCSI_RequestSense_T *) &Event->RequestSenseData;
4380   unsigned char MessageBuffer[DAC960_LineBufferSize];
4381   static struct { int EventCode; unsigned char *EventMessage; } EventList[] =
4382     { /* Physical Device Events (0x0000 - 0x007F) */
4383       { 0x0001, "P Online" },
4384       { 0x0002, "P Standby" },
4385       { 0x0005, "P Automatic Rebuild Started" },
4386       { 0x0006, "P Manual Rebuild Started" },
4387       { 0x0007, "P Rebuild Completed" },
4388       { 0x0008, "P Rebuild Cancelled" },
4389       { 0x0009, "P Rebuild Failed for Unknown Reasons" },
4390       { 0x000A, "P Rebuild Failed due to New Physical Device" },
4391       { 0x000B, "P Rebuild Failed due to Logical Drive Failure" },
4392       { 0x000C, "S Offline" },
4393       { 0x000D, "P Found" },
4394       { 0x000E, "P Removed" },
4395       { 0x000F, "P Unconfigured" },
4396       { 0x0010, "P Expand Capacity Started" },
4397       { 0x0011, "P Expand Capacity Completed" },
4398       { 0x0012, "P Expand Capacity Failed" },
4399       { 0x0013, "P Command Timed Out" },
4400       { 0x0014, "P Command Aborted" },
4401       { 0x0015, "P Command Retried" },
4402       { 0x0016, "P Parity Error" },
4403       { 0x0017, "P Soft Error" },
4404       { 0x0018, "P Miscellaneous Error" },
4405       { 0x0019, "P Reset" },
4406       { 0x001A, "P Active Spare Found" },
4407       { 0x001B, "P Warm Spare Found" },
4408       { 0x001C, "S Sense Data Received" },
4409       { 0x001D, "P Initialization Started" },
4410       { 0x001E, "P Initialization Completed" },
4411       { 0x001F, "P Initialization Failed" },
4412       { 0x0020, "P Initialization Cancelled" },
4413       { 0x0021, "P Failed because Write Recovery Failed" },
4414       { 0x0022, "P Failed because SCSI Bus Reset Failed" },
4415       { 0x0023, "P Failed because of Double Check Condition" },
4416       { 0x0024, "P Failed because Device Cannot Be Accessed" },
4417       { 0x0025, "P Failed because of Gross Error on SCSI Processor" },
4418       { 0x0026, "P Failed because of Bad Tag from Device" },
4419       { 0x0027, "P Failed because of Command Timeout" },
4420       { 0x0028, "P Failed because of System Reset" },
4421       { 0x0029, "P Failed because of Busy Status or Parity Error" },
4422       { 0x002A, "P Failed because Host Set Device to Failed State" },
4423       { 0x002B, "P Failed because of Selection Timeout" },
4424       { 0x002C, "P Failed because of SCSI Bus Phase Error" },
4425       { 0x002D, "P Failed because Device Returned Unknown Status" },
4426       { 0x002E, "P Failed because Device Not Ready" },
4427       { 0x002F, "P Failed because Device Not Found at Startup" },
4428       { 0x0030, "P Failed because COD Write Operation Failed" },
4429       { 0x0031, "P Failed because BDT Write Operation Failed" },
4430       { 0x0039, "P Missing at Startup" },
4431       { 0x003A, "P Start Rebuild Failed due to Physical Drive Too Small" },
4432       { 0x003C, "P Temporarily Offline Device Automatically Made Online" },
4433       { 0x003D, "P Standby Rebuild Started" },
4434       /* Logical Device Events (0x0080 - 0x00FF) */
4435       { 0x0080, "M Consistency Check Started" },
4436       { 0x0081, "M Consistency Check Completed" },
4437       { 0x0082, "M Consistency Check Cancelled" },
4438       { 0x0083, "M Consistency Check Completed With Errors" },
4439       { 0x0084, "M Consistency Check Failed due to Logical Drive Failure" },
4440       { 0x0085, "M Consistency Check Failed due to Physical Device Failure" },
4441       { 0x0086, "L Offline" },
4442       { 0x0087, "L Critical" },
4443       { 0x0088, "L Online" },
4444       { 0x0089, "M Automatic Rebuild Started" },
4445       { 0x008A, "M Manual Rebuild Started" },
4446       { 0x008B, "M Rebuild Completed" },
4447       { 0x008C, "M Rebuild Cancelled" },
4448       { 0x008D, "M Rebuild Failed for Unknown Reasons" },
4449       { 0x008E, "M Rebuild Failed due to New Physical Device" },
4450       { 0x008F, "M Rebuild Failed due to Logical Drive Failure" },
4451       { 0x0090, "M Initialization Started" },
4452       { 0x0091, "M Initialization Completed" },
4453       { 0x0092, "M Initialization Cancelled" },
4454       { 0x0093, "M Initialization Failed" },
4455       { 0x0094, "L Found" },
4456       { 0x0095, "L Deleted" },
4457       { 0x0096, "M Expand Capacity Started" },
4458       { 0x0097, "M Expand Capacity Completed" },
4459       { 0x0098, "M Expand Capacity Failed" },
4460       { 0x0099, "L Bad Block Found" },
4461       { 0x009A, "L Size Changed" },
4462       { 0x009B, "L Type Changed" },
4463       { 0x009C, "L Bad Data Block Found" },
4464       { 0x009E, "L Read of Data Block in BDT" },
4465       { 0x009F, "L Write Back Data for Disk Block Lost" },
4466       { 0x00A0, "L Temporarily Offline RAID-5/3 Drive Made Online" },
4467       { 0x00A1, "L Temporarily Offline RAID-6/1/0/7 Drive Made Online" },
4468       { 0x00A2, "L Standby Rebuild Started" },
4469       /* Fault Management Events (0x0100 - 0x017F) */
4470       { 0x0140, "E Fan %d Failed" },
4471       { 0x0141, "E Fan %d OK" },
4472       { 0x0142, "E Fan %d Not Present" },
4473       { 0x0143, "E Power Supply %d Failed" },
4474       { 0x0144, "E Power Supply %d OK" },
4475       { 0x0145, "E Power Supply %d Not Present" },
4476       { 0x0146, "E Temperature Sensor %d Temperature Exceeds Safe Limit" },
4477       { 0x0147, "E Temperature Sensor %d Temperature Exceeds Working Limit" },
4478       { 0x0148, "E Temperature Sensor %d Temperature Normal" },
4479       { 0x0149, "E Temperature Sensor %d Not Present" },
4480       { 0x014A, "E Enclosure Management Unit %d Access Critical" },
4481       { 0x014B, "E Enclosure Management Unit %d Access OK" },
4482       { 0x014C, "E Enclosure Management Unit %d Access Offline" },
4483       /* Controller Events (0x0180 - 0x01FF) */
4484       { 0x0181, "C Cache Write Back Error" },
4485       { 0x0188, "C Battery Backup Unit Found" },
4486       { 0x0189, "C Battery Backup Unit Charge Level Low" },
4487       { 0x018A, "C Battery Backup Unit Charge Level OK" },
4488       { 0x0193, "C Installation Aborted" },
4489       { 0x0195, "C Battery Backup Unit Physically Removed" },
4490       { 0x0196, "C Memory Error During Warm Boot" },
4491       { 0x019E, "C Memory Soft ECC Error Corrected" },
4492       { 0x019F, "C Memory Hard ECC Error Corrected" },
4493       { 0x01A2, "C Battery Backup Unit Failed" },
4494       { 0x01AB, "C Mirror Race Recovery Failed" },
4495       { 0x01AC, "C Mirror Race on Critical Drive" },
4496       /* Controller Internal Processor Events */
4497       { 0x0380, "C Internal Controller Hung" },
4498       { 0x0381, "C Internal Controller Firmware Breakpoint" },
4499       { 0x0390, "C Internal Controller i960 Processor Specific Error" },
4500       { 0x03A0, "C Internal Controller StrongARM Processor Specific Error" },
4501       { 0, "" } };
4502   int EventListIndex = 0, EventCode;
4503   unsigned char EventType, *EventMessage;
4504   if (Event->EventCode == 0x1C &&
4505       RequestSense->SenseKey == DAC960_SenseKey_VendorSpecific &&
4506       (RequestSense->AdditionalSenseCode == 0x80 ||
4507        RequestSense->AdditionalSenseCode == 0x81))
4508     Event->EventCode = ((RequestSense->AdditionalSenseCode - 0x80) << 8) |
4509                        RequestSense->AdditionalSenseCodeQualifier;
4510   while (true)
4511     {
4512       EventCode = EventList[EventListIndex].EventCode;
4513       if (EventCode == Event->EventCode || EventCode == 0) break;
4514       EventListIndex++;
4515     }
4516   EventType = EventList[EventListIndex].EventMessage[0];
4517   EventMessage = &EventList[EventListIndex].EventMessage[2];
4518   if (EventCode == 0)
4519     {
4520       DAC960_Critical("Unknown Controller Event Code %04X\n",
4521                       Controller, Event->EventCode);
4522       return;
4523     }
4524   switch (EventType)
4525     {
4526     case 'P':
4527       DAC960_Critical("Physical Device %d:%d %s\n", Controller,
4528                       Event->Channel, Event->TargetID, EventMessage);
4529       break;
4530     case 'L':
4531       DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
4532                       Event->LogicalUnit, Controller->ControllerNumber,
4533                       Event->LogicalUnit, EventMessage);
4534       break;
4535     case 'M':
4536       DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
4537                       Event->LogicalUnit, Controller->ControllerNumber,
4538                       Event->LogicalUnit, EventMessage);
4539       break;
4540     case 'S':
4541       if (RequestSense->SenseKey == DAC960_SenseKey_NoSense ||
4542           (RequestSense->SenseKey == DAC960_SenseKey_NotReady &&
4543            RequestSense->AdditionalSenseCode == 0x04 &&
4544            (RequestSense->AdditionalSenseCodeQualifier == 0x01 ||
4545             RequestSense->AdditionalSenseCodeQualifier == 0x02)))
4546         break;
4547       DAC960_Critical("Physical Device %d:%d %s\n", Controller,
4548                       Event->Channel, Event->TargetID, EventMessage);
4549       DAC960_Critical("Physical Device %d:%d Request Sense: "
4550                       "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
4551                       Controller,
4552                       Event->Channel,
4553                       Event->TargetID,
4554                       RequestSense->SenseKey,
4555                       RequestSense->AdditionalSenseCode,
4556                       RequestSense->AdditionalSenseCodeQualifier);
4557       DAC960_Critical("Physical Device %d:%d Request Sense: "
4558                       "Information = %02X%02X%02X%02X "
4559                       "%02X%02X%02X%02X\n",
4560                       Controller,
4561                       Event->Channel,
4562                       Event->TargetID,
4563                       RequestSense->Information[0],
4564                       RequestSense->Information[1],
4565                       RequestSense->Information[2],
4566                       RequestSense->Information[3],
4567                       RequestSense->CommandSpecificInformation[0],
4568                       RequestSense->CommandSpecificInformation[1],
4569                       RequestSense->CommandSpecificInformation[2],
4570                       RequestSense->CommandSpecificInformation[3]);
4571       break;
4572     case 'E':
4573       if (Controller->SuppressEnclosureMessages) break;
4574       sprintf(MessageBuffer, EventMessage, Event->LogicalUnit);
4575       DAC960_Critical("Enclosure %d %s\n", Controller,
4576                       Event->TargetID, MessageBuffer);
4577       break;
4578     case 'C':
4579       DAC960_Critical("Controller %s\n", Controller, EventMessage);
4580       break;
4581     default:
4582       DAC960_Critical("Unknown Controller Event Code %04X\n",
4583                       Controller, Event->EventCode);
4584       break;
4585     }
4586 }
4587
4588
4589 /*
4590   DAC960_V2_ReportProgress prints an appropriate progress message for
4591   Logical Device Long Operations.
4592 */
4593
4594 static void DAC960_V2_ReportProgress(DAC960_Controller_T *Controller,
4595                                      unsigned char *MessageString,
4596                                      unsigned int LogicalDeviceNumber,
4597                                      unsigned long BlocksCompleted,
4598                                      unsigned long LogicalDeviceSize)
4599 {
4600   Controller->EphemeralProgressMessage = true;
4601   DAC960_Progress("%s in Progress: Logical Drive %d (/dev/rd/c%dd%d) "
4602                   "%d%% completed\n", Controller,
4603                   MessageString,
4604                   LogicalDeviceNumber,
4605                   Controller->ControllerNumber,
4606                   LogicalDeviceNumber,
4607                   (100 * (BlocksCompleted >> 7)) / (LogicalDeviceSize >> 7));
4608   Controller->EphemeralProgressMessage = false;
4609 }
4610
4611
4612 /*
4613   DAC960_V2_ProcessCompletedCommand performs completion processing for Command
4614   for DAC960 V2 Firmware Controllers.
4615 */
4616
4617 static void DAC960_V2_ProcessCompletedCommand(DAC960_Command_T *Command)
4618 {
4619   DAC960_Controller_T *Controller = Command->Controller;
4620   DAC960_CommandType_T CommandType = Command->CommandType;
4621   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
4622   DAC960_V2_IOCTL_Opcode_T CommandOpcode = CommandMailbox->Common.IOCTL_Opcode;
4623   DAC960_V2_CommandStatus_T CommandStatus = Command->V2.CommandStatus;
4624
4625   if (CommandType == DAC960_ReadCommand ||
4626       CommandType == DAC960_WriteCommand)
4627     {
4628
4629 #ifdef FORCE_RETRY_DEBUG
4630       CommandStatus = DAC960_V2_AbormalCompletion;
4631 #endif
4632       Command->V2.RequestSense->SenseKey = DAC960_SenseKey_MediumError;
4633
4634       if (CommandStatus == DAC960_V2_NormalCompletion) {
4635
4636                 if (!DAC960_ProcessCompletedRequest(Command, true))
4637                         BUG();
4638
4639       } else if (Command->V2.RequestSense->SenseKey == DAC960_SenseKey_MediumError)
4640         {
4641           /*
4642            * break the command down into pieces and resubmit each
4643            * piece, hoping that some of them will succeed.
4644            */
4645            DAC960_queue_partial_rw(Command);
4646            return;
4647         }
4648       else
4649         {
4650           if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
4651             DAC960_V2_ReadWriteError(Command);
4652           /*
4653             Perform completion processing for all buffers in this I/O Request.
4654           */
4655           (void)DAC960_ProcessCompletedRequest(Command, false);
4656         }
4657     }
4658   else if (CommandType == DAC960_ReadRetryCommand ||
4659            CommandType == DAC960_WriteRetryCommand)
4660     {
4661       bool normal_completion;
4662
4663 #ifdef FORCE_RETRY_FAILURE_DEBUG
4664       static int retry_count = 1;
4665 #endif
4666       /*
4667         Perform completion processing for the portion that was
4668         retried, and submit the next portion, if any.
4669       */
4670       normal_completion = true;
4671       if (CommandStatus != DAC960_V2_NormalCompletion) {
4672         normal_completion = false;
4673         if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
4674             DAC960_V2_ReadWriteError(Command);
4675       }
4676
4677 #ifdef FORCE_RETRY_FAILURE_DEBUG
4678       if (!(++retry_count % 10000)) {
4679               printk("V2 error retry failure test\n");
4680               normal_completion = false;
4681               DAC960_V2_ReadWriteError(Command);
4682       }
4683 #endif
4684
4685       if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
4686                 DAC960_queue_partial_rw(Command);
4687                 return;
4688       }
4689     }
4690   else if (CommandType == DAC960_MonitoringCommand)
4691     {
4692       if (Controller->ShutdownMonitoringTimer)
4693               return;
4694       if (CommandOpcode == DAC960_V2_GetControllerInfo)
4695         {
4696           DAC960_V2_ControllerInfo_T *NewControllerInfo =
4697             Controller->V2.NewControllerInformation;
4698           DAC960_V2_ControllerInfo_T *ControllerInfo =
4699             &Controller->V2.ControllerInformation;
4700           Controller->LogicalDriveCount =
4701             NewControllerInfo->LogicalDevicesPresent;
4702           Controller->V2.NeedLogicalDeviceInformation = true;
4703           Controller->V2.NeedPhysicalDeviceInformation = true;
4704           Controller->V2.StartLogicalDeviceInformationScan = true;
4705           Controller->V2.StartPhysicalDeviceInformationScan = true;
4706           Controller->MonitoringAlertMode =
4707             (NewControllerInfo->LogicalDevicesCritical > 0 ||
4708              NewControllerInfo->LogicalDevicesOffline > 0 ||
4709              NewControllerInfo->PhysicalDisksCritical > 0 ||
4710              NewControllerInfo->PhysicalDisksOffline > 0);
4711           memcpy(ControllerInfo, NewControllerInfo,
4712                  sizeof(DAC960_V2_ControllerInfo_T));
4713         }
4714       else if (CommandOpcode == DAC960_V2_GetEvent)
4715         {
4716           if (CommandStatus == DAC960_V2_NormalCompletion) {
4717             DAC960_V2_ReportEvent(Controller, Controller->V2.Event);
4718           }
4719           Controller->V2.NextEventSequenceNumber++;
4720         }
4721       else if (CommandOpcode == DAC960_V2_GetPhysicalDeviceInfoValid &&
4722                CommandStatus == DAC960_V2_NormalCompletion)
4723         {
4724           DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
4725             Controller->V2.NewPhysicalDeviceInformation;
4726           unsigned int PhysicalDeviceIndex = Controller->V2.PhysicalDeviceIndex;
4727           DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
4728             Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
4729           DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4730             Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
4731           unsigned int DeviceIndex;
4732           while (PhysicalDeviceInfo != NULL &&
4733                  (NewPhysicalDeviceInfo->Channel >
4734                   PhysicalDeviceInfo->Channel ||
4735                   (NewPhysicalDeviceInfo->Channel ==
4736                    PhysicalDeviceInfo->Channel &&
4737                    (NewPhysicalDeviceInfo->TargetID >
4738                     PhysicalDeviceInfo->TargetID ||
4739                    (NewPhysicalDeviceInfo->TargetID ==
4740                     PhysicalDeviceInfo->TargetID &&
4741                     NewPhysicalDeviceInfo->LogicalUnit >
4742                     PhysicalDeviceInfo->LogicalUnit)))))
4743             {
4744               DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
4745                               Controller,
4746                               PhysicalDeviceInfo->Channel,
4747                               PhysicalDeviceInfo->TargetID);
4748               Controller->V2.PhysicalDeviceInformation
4749                              [PhysicalDeviceIndex] = NULL;
4750               Controller->V2.InquiryUnitSerialNumber
4751                              [PhysicalDeviceIndex] = NULL;
4752               kfree(PhysicalDeviceInfo);
4753               kfree(InquiryUnitSerialNumber);
4754               for (DeviceIndex = PhysicalDeviceIndex;
4755                    DeviceIndex < DAC960_V2_MaxPhysicalDevices - 1;
4756                    DeviceIndex++)
4757                 {
4758                   Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
4759                     Controller->V2.PhysicalDeviceInformation[DeviceIndex+1];
4760                   Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
4761                     Controller->V2.InquiryUnitSerialNumber[DeviceIndex+1];
4762                 }
4763               Controller->V2.PhysicalDeviceInformation
4764                              [DAC960_V2_MaxPhysicalDevices-1] = NULL;
4765               Controller->V2.InquiryUnitSerialNumber
4766                              [DAC960_V2_MaxPhysicalDevices-1] = NULL;
4767               PhysicalDeviceInfo =
4768                 Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
4769               InquiryUnitSerialNumber =
4770                 Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
4771             }
4772           if (PhysicalDeviceInfo == NULL ||
4773               (NewPhysicalDeviceInfo->Channel !=
4774                PhysicalDeviceInfo->Channel) ||
4775               (NewPhysicalDeviceInfo->TargetID !=
4776                PhysicalDeviceInfo->TargetID) ||
4777               (NewPhysicalDeviceInfo->LogicalUnit !=
4778                PhysicalDeviceInfo->LogicalUnit))
4779             {
4780               PhysicalDeviceInfo =
4781                 kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T), GFP_ATOMIC);
4782               InquiryUnitSerialNumber =
4783                   kmalloc(sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
4784                           GFP_ATOMIC);
4785               if (InquiryUnitSerialNumber == NULL ||
4786                   PhysicalDeviceInfo == NULL)
4787                 {
4788                   kfree(InquiryUnitSerialNumber);
4789                   InquiryUnitSerialNumber = NULL;
4790                   kfree(PhysicalDeviceInfo);
4791                   PhysicalDeviceInfo = NULL;
4792                 }
4793               DAC960_Critical("Physical Device %d:%d Now Exists%s\n",
4794                               Controller,
4795                               NewPhysicalDeviceInfo->Channel,
4796                               NewPhysicalDeviceInfo->TargetID,
4797                               (PhysicalDeviceInfo != NULL
4798                                ? "" : " - Allocation Failed"));
4799               if (PhysicalDeviceInfo != NULL)
4800                 {
4801                   memset(PhysicalDeviceInfo, 0,
4802                          sizeof(DAC960_V2_PhysicalDeviceInfo_T));
4803                   PhysicalDeviceInfo->PhysicalDeviceState =
4804                     DAC960_V2_Device_InvalidState;
4805                   memset(InquiryUnitSerialNumber, 0,
4806                          sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4807                   InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
4808                   for (DeviceIndex = DAC960_V2_MaxPhysicalDevices - 1;
4809                        DeviceIndex > PhysicalDeviceIndex;
4810                        DeviceIndex--)
4811                     {
4812                       Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
4813                         Controller->V2.PhysicalDeviceInformation[DeviceIndex-1];
4814                       Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
4815                         Controller->V2.InquiryUnitSerialNumber[DeviceIndex-1];
4816                     }
4817                   Controller->V2.PhysicalDeviceInformation
4818                                  [PhysicalDeviceIndex] =
4819                     PhysicalDeviceInfo;
4820                   Controller->V2.InquiryUnitSerialNumber
4821                                  [PhysicalDeviceIndex] =
4822                     InquiryUnitSerialNumber;
4823                   Controller->V2.NeedDeviceSerialNumberInformation = true;
4824                 }
4825             }
4826           if (PhysicalDeviceInfo != NULL)
4827             {
4828               if (NewPhysicalDeviceInfo->PhysicalDeviceState !=
4829                   PhysicalDeviceInfo->PhysicalDeviceState)
4830                 DAC960_Critical(
4831                   "Physical Device %d:%d is now %s\n", Controller,
4832                   NewPhysicalDeviceInfo->Channel,
4833                   NewPhysicalDeviceInfo->TargetID,
4834                   (NewPhysicalDeviceInfo->PhysicalDeviceState
4835                    == DAC960_V2_Device_Online
4836                    ? "ONLINE"
4837                    : NewPhysicalDeviceInfo->PhysicalDeviceState
4838                      == DAC960_V2_Device_Rebuild
4839                      ? "REBUILD"
4840                      : NewPhysicalDeviceInfo->PhysicalDeviceState
4841                        == DAC960_V2_Device_Missing
4842                        ? "MISSING"
4843                        : NewPhysicalDeviceInfo->PhysicalDeviceState
4844                          == DAC960_V2_Device_Critical
4845                          ? "CRITICAL"
4846                          : NewPhysicalDeviceInfo->PhysicalDeviceState
4847                            == DAC960_V2_Device_Dead
4848                            ? "DEAD"
4849                            : NewPhysicalDeviceInfo->PhysicalDeviceState
4850                              == DAC960_V2_Device_SuspectedDead
4851                              ? "SUSPECTED-DEAD"
4852                              : NewPhysicalDeviceInfo->PhysicalDeviceState
4853                                == DAC960_V2_Device_CommandedOffline
4854                                ? "COMMANDED-OFFLINE"
4855                                : NewPhysicalDeviceInfo->PhysicalDeviceState
4856                                  == DAC960_V2_Device_Standby
4857                                  ? "STANDBY" : "UNKNOWN"));
4858               if ((NewPhysicalDeviceInfo->ParityErrors !=
4859                    PhysicalDeviceInfo->ParityErrors) ||
4860                   (NewPhysicalDeviceInfo->SoftErrors !=
4861                    PhysicalDeviceInfo->SoftErrors) ||
4862                   (NewPhysicalDeviceInfo->HardErrors !=
4863                    PhysicalDeviceInfo->HardErrors) ||
4864                   (NewPhysicalDeviceInfo->MiscellaneousErrors !=
4865                    PhysicalDeviceInfo->MiscellaneousErrors) ||
4866                   (NewPhysicalDeviceInfo->CommandTimeouts !=
4867                    PhysicalDeviceInfo->CommandTimeouts) ||
4868                   (NewPhysicalDeviceInfo->Retries !=
4869                    PhysicalDeviceInfo->Retries) ||
4870                   (NewPhysicalDeviceInfo->Aborts !=
4871                    PhysicalDeviceInfo->Aborts) ||
4872                   (NewPhysicalDeviceInfo->PredictedFailuresDetected !=
4873                    PhysicalDeviceInfo->PredictedFailuresDetected))
4874                 {
4875                   DAC960_Critical("Physical Device %d:%d Errors: "
4876                                   "Parity = %d, Soft = %d, "
4877                                   "Hard = %d, Misc = %d\n",
4878                                   Controller,
4879                                   NewPhysicalDeviceInfo->Channel,
4880                                   NewPhysicalDeviceInfo->TargetID,
4881                                   NewPhysicalDeviceInfo->ParityErrors,
4882                                   NewPhysicalDeviceInfo->SoftErrors,
4883                                   NewPhysicalDeviceInfo->HardErrors,
4884                                   NewPhysicalDeviceInfo->MiscellaneousErrors);
4885                   DAC960_Critical("Physical Device %d:%d Errors: "
4886                                   "Timeouts = %d, Retries = %d, "
4887                                   "Aborts = %d, Predicted = %d\n",
4888                                   Controller,
4889                                   NewPhysicalDeviceInfo->Channel,
4890                                   NewPhysicalDeviceInfo->TargetID,
4891                                   NewPhysicalDeviceInfo->CommandTimeouts,
4892                                   NewPhysicalDeviceInfo->Retries,
4893                                   NewPhysicalDeviceInfo->Aborts,
4894                                   NewPhysicalDeviceInfo
4895                                   ->PredictedFailuresDetected);
4896                 }
4897               if ((PhysicalDeviceInfo->PhysicalDeviceState
4898                    == DAC960_V2_Device_Dead ||
4899                    PhysicalDeviceInfo->PhysicalDeviceState
4900                    == DAC960_V2_Device_InvalidState) &&
4901                   NewPhysicalDeviceInfo->PhysicalDeviceState
4902                   != DAC960_V2_Device_Dead)
4903                 Controller->V2.NeedDeviceSerialNumberInformation = true;
4904               memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
4905                      sizeof(DAC960_V2_PhysicalDeviceInfo_T));
4906             }
4907           NewPhysicalDeviceInfo->LogicalUnit++;
4908           Controller->V2.PhysicalDeviceIndex++;
4909         }
4910       else if (CommandOpcode == DAC960_V2_GetPhysicalDeviceInfoValid)
4911         {
4912           unsigned int DeviceIndex;
4913           for (DeviceIndex = Controller->V2.PhysicalDeviceIndex;
4914                DeviceIndex < DAC960_V2_MaxPhysicalDevices;
4915                DeviceIndex++)
4916             {
4917               DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
4918                 Controller->V2.PhysicalDeviceInformation[DeviceIndex];
4919               DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4920                 Controller->V2.InquiryUnitSerialNumber[DeviceIndex];
4921               if (PhysicalDeviceInfo == NULL) break;
4922               DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
4923                               Controller,
4924                               PhysicalDeviceInfo->Channel,
4925                               PhysicalDeviceInfo->TargetID);
4926               Controller->V2.PhysicalDeviceInformation[DeviceIndex] = NULL;
4927               Controller->V2.InquiryUnitSerialNumber[DeviceIndex] = NULL;
4928               kfree(PhysicalDeviceInfo);
4929               kfree(InquiryUnitSerialNumber);
4930             }
4931           Controller->V2.NeedPhysicalDeviceInformation = false;
4932         }
4933       else if (CommandOpcode == DAC960_V2_GetLogicalDeviceInfoValid &&
4934                CommandStatus == DAC960_V2_NormalCompletion)
4935         {
4936           DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
4937             Controller->V2.NewLogicalDeviceInformation;
4938           unsigned short LogicalDeviceNumber =
4939             NewLogicalDeviceInfo->LogicalDeviceNumber;
4940           DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
4941             Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber];
4942           if (LogicalDeviceInfo == NULL)
4943             {
4944               DAC960_V2_PhysicalDevice_T PhysicalDevice;
4945               PhysicalDevice.Controller = 0;
4946               PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
4947               PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
4948               PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
4949               Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
4950                 PhysicalDevice;
4951               LogicalDeviceInfo = kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T),
4952                                           GFP_ATOMIC);
4953               Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
4954                 LogicalDeviceInfo;
4955               DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
4956                               "Now Exists%s\n", Controller,
4957                               LogicalDeviceNumber,
4958                               Controller->ControllerNumber,
4959                               LogicalDeviceNumber,
4960                               (LogicalDeviceInfo != NULL
4961                                ? "" : " - Allocation Failed"));
4962               if (LogicalDeviceInfo != NULL)
4963                 {
4964                   memset(LogicalDeviceInfo, 0,
4965                          sizeof(DAC960_V2_LogicalDeviceInfo_T));
4966                   DAC960_ComputeGenericDiskInfo(Controller);
4967                 }
4968             }
4969           if (LogicalDeviceInfo != NULL)
4970             {
4971               unsigned long LogicalDeviceSize =
4972                 NewLogicalDeviceInfo->ConfigurableDeviceSize;
4973               if (NewLogicalDeviceInfo->LogicalDeviceState !=
4974                   LogicalDeviceInfo->LogicalDeviceState)
4975                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
4976                                 "is now %s\n", Controller,
4977                                 LogicalDeviceNumber,
4978                                 Controller->ControllerNumber,
4979                                 LogicalDeviceNumber,
4980                                 (NewLogicalDeviceInfo->LogicalDeviceState
4981                                  == DAC960_V2_LogicalDevice_Online
4982                                  ? "ONLINE"
4983                                  : NewLogicalDeviceInfo->LogicalDeviceState
4984                                    == DAC960_V2_LogicalDevice_Critical
4985                                    ? "CRITICAL" : "OFFLINE"));
4986               if ((NewLogicalDeviceInfo->SoftErrors !=
4987                    LogicalDeviceInfo->SoftErrors) ||
4988                   (NewLogicalDeviceInfo->CommandsFailed !=
4989                    LogicalDeviceInfo->CommandsFailed) ||
4990                   (NewLogicalDeviceInfo->DeferredWriteErrors !=
4991                    LogicalDeviceInfo->DeferredWriteErrors))
4992                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) Errors: "
4993                                 "Soft = %d, Failed = %d, Deferred Write = %d\n",
4994                                 Controller, LogicalDeviceNumber,
4995                                 Controller->ControllerNumber,
4996                                 LogicalDeviceNumber,
4997                                 NewLogicalDeviceInfo->SoftErrors,
4998                                 NewLogicalDeviceInfo->CommandsFailed,
4999                                 NewLogicalDeviceInfo->DeferredWriteErrors);
5000               if (NewLogicalDeviceInfo->ConsistencyCheckInProgress)
5001                 DAC960_V2_ReportProgress(Controller,
5002                                          "Consistency Check",
5003                                          LogicalDeviceNumber,
5004                                          NewLogicalDeviceInfo
5005                                          ->ConsistencyCheckBlockNumber,
5006                                          LogicalDeviceSize);
5007               else if (NewLogicalDeviceInfo->RebuildInProgress)
5008                 DAC960_V2_ReportProgress(Controller,
5009                                          "Rebuild",
5010                                          LogicalDeviceNumber,
5011                                          NewLogicalDeviceInfo
5012                                          ->RebuildBlockNumber,
5013                                          LogicalDeviceSize);
5014               else if (NewLogicalDeviceInfo->BackgroundInitializationInProgress)
5015                 DAC960_V2_ReportProgress(Controller,
5016                                          "Background Initialization",
5017                                          LogicalDeviceNumber,
5018                                          NewLogicalDeviceInfo
5019                                          ->BackgroundInitializationBlockNumber,
5020                                          LogicalDeviceSize);
5021               else if (NewLogicalDeviceInfo->ForegroundInitializationInProgress)
5022                 DAC960_V2_ReportProgress(Controller,
5023                                          "Foreground Initialization",
5024                                          LogicalDeviceNumber,
5025                                          NewLogicalDeviceInfo
5026                                          ->ForegroundInitializationBlockNumber,
5027                                          LogicalDeviceSize);
5028               else if (NewLogicalDeviceInfo->DataMigrationInProgress)
5029                 DAC960_V2_ReportProgress(Controller,
5030                                          "Data Migration",
5031                                          LogicalDeviceNumber,
5032                                          NewLogicalDeviceInfo
5033                                          ->DataMigrationBlockNumber,
5034                                          LogicalDeviceSize);
5035               else if (NewLogicalDeviceInfo->PatrolOperationInProgress)
5036                 DAC960_V2_ReportProgress(Controller,
5037                                          "Patrol Operation",
5038                                          LogicalDeviceNumber,
5039                                          NewLogicalDeviceInfo
5040                                          ->PatrolOperationBlockNumber,
5041                                          LogicalDeviceSize);
5042               if (LogicalDeviceInfo->BackgroundInitializationInProgress &&
5043                   !NewLogicalDeviceInfo->BackgroundInitializationInProgress)
5044                 DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) "
5045                                 "Background Initialization %s\n",
5046                                 Controller,
5047                                 LogicalDeviceNumber,
5048                                 Controller->ControllerNumber,
5049                                 LogicalDeviceNumber,
5050                                 (NewLogicalDeviceInfo->LogicalDeviceControl
5051                                                       .LogicalDeviceInitialized
5052                                  ? "Completed" : "Failed"));
5053               memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
5054                      sizeof(DAC960_V2_LogicalDeviceInfo_T));
5055             }
5056           Controller->V2.LogicalDriveFoundDuringScan
5057                          [LogicalDeviceNumber] = true;
5058           NewLogicalDeviceInfo->LogicalDeviceNumber++;
5059         }
5060       else if (CommandOpcode == DAC960_V2_GetLogicalDeviceInfoValid)
5061         {
5062           int LogicalDriveNumber;
5063           for (LogicalDriveNumber = 0;
5064                LogicalDriveNumber < DAC960_MaxLogicalDrives;
5065                LogicalDriveNumber++)
5066             {
5067               DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
5068                 Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
5069               if (LogicalDeviceInfo == NULL ||
5070                   Controller->V2.LogicalDriveFoundDuringScan
5071                                  [LogicalDriveNumber])
5072                 continue;
5073               DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
5074                               "No Longer Exists\n", Controller,
5075                               LogicalDriveNumber,
5076                               Controller->ControllerNumber,
5077                               LogicalDriveNumber);
5078               Controller->V2.LogicalDeviceInformation
5079                              [LogicalDriveNumber] = NULL;
5080               kfree(LogicalDeviceInfo);
5081               Controller->LogicalDriveInitiallyAccessible
5082                           [LogicalDriveNumber] = false;
5083               DAC960_ComputeGenericDiskInfo(Controller);
5084             }
5085           Controller->V2.NeedLogicalDeviceInformation = false;
5086         }
5087       else if (CommandOpcode == DAC960_V2_SCSI_10_Passthru)
5088         {
5089             DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
5090                 Controller->V2.InquiryUnitSerialNumber[Controller->V2.PhysicalDeviceIndex - 1];
5091
5092             if (CommandStatus != DAC960_V2_NormalCompletion) {
5093                 memset(InquiryUnitSerialNumber,
5094                         0, sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
5095                 InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
5096             } else
5097                 memcpy(InquiryUnitSerialNumber,
5098                         Controller->V2.NewInquiryUnitSerialNumber,
5099                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
5100
5101              Controller->V2.NeedDeviceSerialNumberInformation = false;
5102         }
5103
5104       if (Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
5105           - Controller->V2.NextEventSequenceNumber > 0)
5106         {
5107           CommandMailbox->GetEvent.CommandOpcode = DAC960_V2_IOCTL;
5108           CommandMailbox->GetEvent.DataTransferSize = sizeof(DAC960_V2_Event_T);
5109           CommandMailbox->GetEvent.EventSequenceNumberHigh16 =
5110             Controller->V2.NextEventSequenceNumber >> 16;
5111           CommandMailbox->GetEvent.ControllerNumber = 0;
5112           CommandMailbox->GetEvent.IOCTL_Opcode =
5113             DAC960_V2_GetEvent;
5114           CommandMailbox->GetEvent.EventSequenceNumberLow16 =
5115             Controller->V2.NextEventSequenceNumber & 0xFFFF;
5116           CommandMailbox->GetEvent.DataTransferMemoryAddress
5117                                   .ScatterGatherSegments[0]
5118                                   .SegmentDataPointer =
5119             Controller->V2.EventDMA;
5120           CommandMailbox->GetEvent.DataTransferMemoryAddress
5121                                   .ScatterGatherSegments[0]
5122                                   .SegmentByteCount =
5123             CommandMailbox->GetEvent.DataTransferSize;
5124           DAC960_QueueCommand(Command);
5125           return;
5126         }
5127       if (Controller->V2.NeedPhysicalDeviceInformation)
5128         {
5129           if (Controller->V2.NeedDeviceSerialNumberInformation)
5130             {
5131               DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
5132                 Controller->V2.NewInquiryUnitSerialNumber;
5133               InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
5134
5135               DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
5136                         Controller->V2.NewPhysicalDeviceInformation->Channel,
5137                         Controller->V2.NewPhysicalDeviceInformation->TargetID,
5138                 Controller->V2.NewPhysicalDeviceInformation->LogicalUnit - 1);
5139
5140
5141               DAC960_QueueCommand(Command);
5142               return;
5143             }
5144           if (Controller->V2.StartPhysicalDeviceInformationScan)
5145             {
5146               Controller->V2.PhysicalDeviceIndex = 0;
5147               Controller->V2.NewPhysicalDeviceInformation->Channel = 0;
5148               Controller->V2.NewPhysicalDeviceInformation->TargetID = 0;
5149               Controller->V2.NewPhysicalDeviceInformation->LogicalUnit = 0;
5150               Controller->V2.StartPhysicalDeviceInformationScan = false;
5151             }
5152           CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
5153           CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
5154             sizeof(DAC960_V2_PhysicalDeviceInfo_T);
5155           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit =
5156             Controller->V2.NewPhysicalDeviceInformation->LogicalUnit;
5157           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID =
5158             Controller->V2.NewPhysicalDeviceInformation->TargetID;
5159           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel =
5160             Controller->V2.NewPhysicalDeviceInformation->Channel;
5161           CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
5162             DAC960_V2_GetPhysicalDeviceInfoValid;
5163           CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
5164                                             .ScatterGatherSegments[0]
5165                                             .SegmentDataPointer =
5166             Controller->V2.NewPhysicalDeviceInformationDMA;
5167           CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
5168                                             .ScatterGatherSegments[0]
5169                                             .SegmentByteCount =
5170             CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
5171           DAC960_QueueCommand(Command);
5172           return;
5173         }
5174       if (Controller->V2.NeedLogicalDeviceInformation)
5175         {
5176           if (Controller->V2.StartLogicalDeviceInformationScan)
5177             {
5178               int LogicalDriveNumber;
5179               for (LogicalDriveNumber = 0;
5180                    LogicalDriveNumber < DAC960_MaxLogicalDrives;
5181                    LogicalDriveNumber++)
5182                 Controller->V2.LogicalDriveFoundDuringScan
5183                                [LogicalDriveNumber] = false;
5184               Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber = 0;
5185               Controller->V2.StartLogicalDeviceInformationScan = false;
5186             }
5187           CommandMailbox->LogicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
5188           CommandMailbox->LogicalDeviceInfo.DataTransferSize =
5189             sizeof(DAC960_V2_LogicalDeviceInfo_T);
5190           CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
5191             Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber;
5192           CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
5193             DAC960_V2_GetLogicalDeviceInfoValid;
5194           CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
5195                                            .ScatterGatherSegments[0]
5196                                            .SegmentDataPointer =
5197             Controller->V2.NewLogicalDeviceInformationDMA;
5198           CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
5199                                            .ScatterGatherSegments[0]
5200                                            .SegmentByteCount =
5201             CommandMailbox->LogicalDeviceInfo.DataTransferSize;
5202           DAC960_QueueCommand(Command);
5203           return;
5204         }
5205       Controller->MonitoringTimerCount++;
5206       Controller->MonitoringTimer.expires =
5207         jiffies + DAC960_HealthStatusMonitoringInterval;
5208         add_timer(&Controller->MonitoringTimer);
5209     }
5210   if (CommandType == DAC960_ImmediateCommand)
5211     {
5212       complete(Command->Completion);
5213       Command->Completion = NULL;
5214       return;
5215     }
5216   if (CommandType == DAC960_QueuedCommand)
5217     {
5218       DAC960_V2_KernelCommand_T *KernelCommand = Command->V2.KernelCommand;
5219       KernelCommand->CommandStatus = CommandStatus;
5220       KernelCommand->RequestSenseLength = Command->V2.RequestSenseLength;
5221       KernelCommand->DataTransferLength = Command->V2.DataTransferResidue;
5222       Command->V2.KernelCommand = NULL;
5223       DAC960_DeallocateCommand(Command);
5224       KernelCommand->CompletionFunction(KernelCommand);
5225       return;
5226     }
5227   /*
5228     Queue a Status Monitoring Command to the Controller using the just
5229     completed Command if one was deferred previously due to lack of a
5230     free Command when the Monitoring Timer Function was called.
5231   */
5232   if (Controller->MonitoringCommandDeferred)
5233     {
5234       Controller->MonitoringCommandDeferred = false;
5235       DAC960_V2_QueueMonitoringCommand(Command);
5236       return;
5237     }
5238   /*
5239     Deallocate the Command.
5240   */
5241   DAC960_DeallocateCommand(Command);
5242   /*
5243     Wake up any processes waiting on a free Command.
5244   */
5245   wake_up(&Controller->CommandWaitQueue);
5246 }
5247
5248 /*
5249   DAC960_GEM_InterruptHandler handles hardware interrupts from DAC960 GEM Series
5250   Controllers.
5251 */
5252
5253 static irqreturn_t DAC960_GEM_InterruptHandler(int IRQ_Channel,
5254                                        void *DeviceIdentifier)
5255 {
5256   DAC960_Controller_T *Controller = DeviceIdentifier;
5257   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5258   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5259   unsigned long flags;
5260
5261   spin_lock_irqsave(&Controller->queue_lock, flags);
5262   DAC960_GEM_AcknowledgeInterrupt(ControllerBaseAddress);
5263   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5264   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5265     {
5266        DAC960_V2_CommandIdentifier_T CommandIdentifier =
5267            NextStatusMailbox->Fields.CommandIdentifier;
5268        DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5269        Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5270        Command->V2.RequestSenseLength =
5271            NextStatusMailbox->Fields.RequestSenseLength;
5272        Command->V2.DataTransferResidue =
5273            NextStatusMailbox->Fields.DataTransferResidue;
5274        NextStatusMailbox->Words[0] = 0;
5275        if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5276            NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5277        DAC960_V2_ProcessCompletedCommand(Command);
5278     }
5279   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5280   /*
5281     Attempt to remove additional I/O Requests from the Controller's
5282     I/O Request Queue and queue them to the Controller.
5283   */
5284   DAC960_ProcessRequest(Controller);
5285   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5286   return IRQ_HANDLED;
5287 }
5288
5289 /*
5290   DAC960_BA_InterruptHandler handles hardware interrupts from DAC960 BA Series
5291   Controllers.
5292 */
5293
5294 static irqreturn_t DAC960_BA_InterruptHandler(int IRQ_Channel,
5295                                        void *DeviceIdentifier)
5296 {
5297   DAC960_Controller_T *Controller = DeviceIdentifier;
5298   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5299   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5300   unsigned long flags;
5301
5302   spin_lock_irqsave(&Controller->queue_lock, flags);
5303   DAC960_BA_AcknowledgeInterrupt(ControllerBaseAddress);
5304   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5305   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5306     {
5307       DAC960_V2_CommandIdentifier_T CommandIdentifier =
5308         NextStatusMailbox->Fields.CommandIdentifier;
5309       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5310       Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5311       Command->V2.RequestSenseLength =
5312         NextStatusMailbox->Fields.RequestSenseLength;
5313       Command->V2.DataTransferResidue =
5314         NextStatusMailbox->Fields.DataTransferResidue;
5315       NextStatusMailbox->Words[0] = 0;
5316       if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5317         NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5318       DAC960_V2_ProcessCompletedCommand(Command);
5319     }
5320   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5321   /*
5322     Attempt to remove additional I/O Requests from the Controller's
5323     I/O Request Queue and queue them to the Controller.
5324   */
5325   DAC960_ProcessRequest(Controller);
5326   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5327   return IRQ_HANDLED;
5328 }
5329
5330
5331 /*
5332   DAC960_LP_InterruptHandler handles hardware interrupts from DAC960 LP Series
5333   Controllers.
5334 */
5335
5336 static irqreturn_t DAC960_LP_InterruptHandler(int IRQ_Channel,
5337                                        void *DeviceIdentifier)
5338 {
5339   DAC960_Controller_T *Controller = DeviceIdentifier;
5340   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5341   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5342   unsigned long flags;
5343
5344   spin_lock_irqsave(&Controller->queue_lock, flags);
5345   DAC960_LP_AcknowledgeInterrupt(ControllerBaseAddress);
5346   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5347   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5348     {
5349       DAC960_V2_CommandIdentifier_T CommandIdentifier =
5350         NextStatusMailbox->Fields.CommandIdentifier;
5351       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5352       Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5353       Command->V2.RequestSenseLength =
5354         NextStatusMailbox->Fields.RequestSenseLength;
5355       Command->V2.DataTransferResidue =
5356         NextStatusMailbox->Fields.DataTransferResidue;
5357       NextStatusMailbox->Words[0] = 0;
5358       if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5359         NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5360       DAC960_V2_ProcessCompletedCommand(Command);
5361     }
5362   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5363   /*
5364     Attempt to remove additional I/O Requests from the Controller's
5365     I/O Request Queue and queue them to the Controller.
5366   */
5367   DAC960_ProcessRequest(Controller);
5368   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5369   return IRQ_HANDLED;
5370 }
5371
5372
5373 /*
5374   DAC960_LA_InterruptHandler handles hardware interrupts from DAC960 LA Series
5375   Controllers.
5376 */
5377
5378 static irqreturn_t DAC960_LA_InterruptHandler(int IRQ_Channel,
5379                                        void *DeviceIdentifier)
5380 {
5381   DAC960_Controller_T *Controller = DeviceIdentifier;
5382   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5383   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
5384   unsigned long flags;
5385
5386   spin_lock_irqsave(&Controller->queue_lock, flags);
5387   DAC960_LA_AcknowledgeInterrupt(ControllerBaseAddress);
5388   NextStatusMailbox = Controller->V1.NextStatusMailbox;
5389   while (NextStatusMailbox->Fields.Valid)
5390     {
5391       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5392         NextStatusMailbox->Fields.CommandIdentifier;
5393       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5394       Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5395       NextStatusMailbox->Word = 0;
5396       if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
5397         NextStatusMailbox = Controller->V1.FirstStatusMailbox;
5398       DAC960_V1_ProcessCompletedCommand(Command);
5399     }
5400   Controller->V1.NextStatusMailbox = NextStatusMailbox;
5401   /*
5402     Attempt to remove additional I/O Requests from the Controller's
5403     I/O Request Queue and queue them to the Controller.
5404   */
5405   DAC960_ProcessRequest(Controller);
5406   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5407   return IRQ_HANDLED;
5408 }
5409
5410
5411 /*
5412   DAC960_PG_InterruptHandler handles hardware interrupts from DAC960 PG Series
5413   Controllers.
5414 */
5415
5416 static irqreturn_t DAC960_PG_InterruptHandler(int IRQ_Channel,
5417                                        void *DeviceIdentifier)
5418 {
5419   DAC960_Controller_T *Controller = DeviceIdentifier;
5420   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5421   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
5422   unsigned long flags;
5423
5424   spin_lock_irqsave(&Controller->queue_lock, flags);
5425   DAC960_PG_AcknowledgeInterrupt(ControllerBaseAddress);
5426   NextStatusMailbox = Controller->V1.NextStatusMailbox;
5427   while (NextStatusMailbox->Fields.Valid)
5428     {
5429       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5430         NextStatusMailbox->Fields.CommandIdentifier;
5431       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5432       Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5433       NextStatusMailbox->Word = 0;
5434       if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
5435         NextStatusMailbox = Controller->V1.FirstStatusMailbox;
5436       DAC960_V1_ProcessCompletedCommand(Command);
5437     }
5438   Controller->V1.NextStatusMailbox = NextStatusMailbox;
5439   /*
5440     Attempt to remove additional I/O Requests from the Controller's
5441     I/O Request Queue and queue them to the Controller.
5442   */
5443   DAC960_ProcessRequest(Controller);
5444   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5445   return IRQ_HANDLED;
5446 }
5447
5448
5449 /*
5450   DAC960_PD_InterruptHandler handles hardware interrupts from DAC960 PD Series
5451   Controllers.
5452 */
5453
5454 static irqreturn_t DAC960_PD_InterruptHandler(int IRQ_Channel,
5455                                        void *DeviceIdentifier)
5456 {
5457   DAC960_Controller_T *Controller = DeviceIdentifier;
5458   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5459   unsigned long flags;
5460
5461   spin_lock_irqsave(&Controller->queue_lock, flags);
5462   while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
5463     {
5464       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5465         DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
5466       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5467       Command->V1.CommandStatus =
5468         DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
5469       DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
5470       DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
5471       DAC960_V1_ProcessCompletedCommand(Command);
5472     }
5473   /*
5474     Attempt to remove additional I/O Requests from the Controller's
5475     I/O Request Queue and queue them to the Controller.
5476   */
5477   DAC960_ProcessRequest(Controller);
5478   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5479   return IRQ_HANDLED;
5480 }
5481
5482
5483 /*
5484   DAC960_P_InterruptHandler handles hardware interrupts from DAC960 P Series
5485   Controllers.
5486
5487   Translations of DAC960_V1_Enquiry and DAC960_V1_GetDeviceState rely
5488   on the data having been placed into DAC960_Controller_T, rather than
5489   an arbitrary buffer.
5490 */
5491
5492 static irqreturn_t DAC960_P_InterruptHandler(int IRQ_Channel,
5493                                       void *DeviceIdentifier)
5494 {
5495   DAC960_Controller_T *Controller = DeviceIdentifier;
5496   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5497   unsigned long flags;
5498
5499   spin_lock_irqsave(&Controller->queue_lock, flags);
5500   while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
5501     {
5502       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5503         DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
5504       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5505       DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5506       DAC960_V1_CommandOpcode_T CommandOpcode =
5507         CommandMailbox->Common.CommandOpcode;
5508       Command->V1.CommandStatus =
5509         DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
5510       DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
5511       DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
5512       switch (CommandOpcode)
5513         {
5514         case DAC960_V1_Enquiry_Old:
5515           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Enquiry;
5516           DAC960_P_To_PD_TranslateEnquiry(Controller->V1.NewEnquiry);
5517           break;
5518         case DAC960_V1_GetDeviceState_Old:
5519           Command->V1.CommandMailbox.Common.CommandOpcode =
5520                                                 DAC960_V1_GetDeviceState;
5521           DAC960_P_To_PD_TranslateDeviceState(Controller->V1.NewDeviceState);
5522           break;
5523         case DAC960_V1_Read_Old:
5524           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Read;
5525           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5526           break;
5527         case DAC960_V1_Write_Old:
5528           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Write;
5529           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5530           break;
5531         case DAC960_V1_ReadWithScatterGather_Old:
5532           Command->V1.CommandMailbox.Common.CommandOpcode =
5533             DAC960_V1_ReadWithScatterGather;
5534           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5535           break;
5536         case DAC960_V1_WriteWithScatterGather_Old:
5537           Command->V1.CommandMailbox.Common.CommandOpcode =
5538             DAC960_V1_WriteWithScatterGather;
5539           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5540           break;
5541         default:
5542           break;
5543         }
5544       DAC960_V1_ProcessCompletedCommand(Command);
5545     }
5546   /*
5547     Attempt to remove additional I/O Requests from the Controller's
5548     I/O Request Queue and queue them to the Controller.
5549   */
5550   DAC960_ProcessRequest(Controller);
5551   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5552   return IRQ_HANDLED;
5553 }
5554
5555
5556 /*
5557   DAC960_V1_QueueMonitoringCommand queues a Monitoring Command to DAC960 V1
5558   Firmware Controllers.
5559 */
5560
5561 static void DAC960_V1_QueueMonitoringCommand(DAC960_Command_T *Command)
5562 {
5563   DAC960_Controller_T *Controller = Command->Controller;
5564   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5565   DAC960_V1_ClearCommand(Command);
5566   Command->CommandType = DAC960_MonitoringCommand;
5567   CommandMailbox->Type3.CommandOpcode = DAC960_V1_Enquiry;
5568   CommandMailbox->Type3.BusAddress = Controller->V1.NewEnquiryDMA;
5569   DAC960_QueueCommand(Command);
5570 }
5571
5572
5573 /*
5574   DAC960_V2_QueueMonitoringCommand queues a Monitoring Command to DAC960 V2
5575   Firmware Controllers.
5576 */
5577
5578 static void DAC960_V2_QueueMonitoringCommand(DAC960_Command_T *Command)
5579 {
5580   DAC960_Controller_T *Controller = Command->Controller;
5581   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
5582   DAC960_V2_ClearCommand(Command);
5583   Command->CommandType = DAC960_MonitoringCommand;
5584   CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
5585   CommandMailbox->ControllerInfo.CommandControlBits
5586                                 .DataTransferControllerToHost = true;
5587   CommandMailbox->ControllerInfo.CommandControlBits
5588                                 .NoAutoRequestSense = true;
5589   CommandMailbox->ControllerInfo.DataTransferSize =
5590     sizeof(DAC960_V2_ControllerInfo_T);
5591   CommandMailbox->ControllerInfo.ControllerNumber = 0;
5592   CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
5593   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
5594                                 .ScatterGatherSegments[0]
5595                                 .SegmentDataPointer =
5596     Controller->V2.NewControllerInformationDMA;
5597   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
5598                                 .ScatterGatherSegments[0]
5599                                 .SegmentByteCount =
5600     CommandMailbox->ControllerInfo.DataTransferSize;
5601   DAC960_QueueCommand(Command);
5602 }
5603
5604
5605 /*
5606   DAC960_MonitoringTimerFunction is the timer function for monitoring
5607   the status of DAC960 Controllers.
5608 */
5609
5610 static void DAC960_MonitoringTimerFunction(unsigned long TimerData)
5611 {
5612   DAC960_Controller_T *Controller = (DAC960_Controller_T *) TimerData;
5613   DAC960_Command_T *Command;
5614   unsigned long flags;
5615
5616   if (Controller->FirmwareType == DAC960_V1_Controller)
5617     {
5618       spin_lock_irqsave(&Controller->queue_lock, flags);
5619       /*
5620         Queue a Status Monitoring Command to Controller.
5621       */
5622       Command = DAC960_AllocateCommand(Controller);
5623       if (Command != NULL)
5624         DAC960_V1_QueueMonitoringCommand(Command);
5625       else Controller->MonitoringCommandDeferred = true;
5626       spin_unlock_irqrestore(&Controller->queue_lock, flags);
5627     }
5628   else
5629     {
5630       DAC960_V2_ControllerInfo_T *ControllerInfo =
5631         &Controller->V2.ControllerInformation;
5632       unsigned int StatusChangeCounter =
5633         Controller->V2.HealthStatusBuffer->StatusChangeCounter;
5634       bool ForceMonitoringCommand = false;
5635       if (time_after(jiffies, Controller->SecondaryMonitoringTime
5636           + DAC960_SecondaryMonitoringInterval))
5637         {
5638           int LogicalDriveNumber;
5639           for (LogicalDriveNumber = 0;
5640                LogicalDriveNumber < DAC960_MaxLogicalDrives;
5641                LogicalDriveNumber++)
5642             {
5643               DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
5644                 Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
5645               if (LogicalDeviceInfo == NULL) continue;
5646               if (!LogicalDeviceInfo->LogicalDeviceControl
5647                                      .LogicalDeviceInitialized)
5648                 {
5649                   ForceMonitoringCommand = true;
5650                   break;
5651                 }
5652             }
5653           Controller->SecondaryMonitoringTime = jiffies;
5654         }
5655       if (StatusChangeCounter == Controller->V2.StatusChangeCounter &&
5656           Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
5657           == Controller->V2.NextEventSequenceNumber &&
5658           (ControllerInfo->BackgroundInitializationsActive +
5659            ControllerInfo->LogicalDeviceInitializationsActive +
5660            ControllerInfo->PhysicalDeviceInitializationsActive +
5661            ControllerInfo->ConsistencyChecksActive +
5662            ControllerInfo->RebuildsActive +
5663            ControllerInfo->OnlineExpansionsActive == 0 ||
5664            time_before(jiffies, Controller->PrimaryMonitoringTime
5665            + DAC960_MonitoringTimerInterval)) &&
5666           !ForceMonitoringCommand)
5667         {
5668           Controller->MonitoringTimer.expires =
5669             jiffies + DAC960_HealthStatusMonitoringInterval;
5670             add_timer(&Controller->MonitoringTimer);
5671           return;
5672         }
5673       Controller->V2.StatusChangeCounter = StatusChangeCounter;
5674       Controller->PrimaryMonitoringTime = jiffies;
5675
5676       spin_lock_irqsave(&Controller->queue_lock, flags);
5677       /*
5678         Queue a Status Monitoring Command to Controller.
5679       */
5680       Command = DAC960_AllocateCommand(Controller);
5681       if (Command != NULL)
5682         DAC960_V2_QueueMonitoringCommand(Command);
5683       else Controller->MonitoringCommandDeferred = true;
5684       spin_unlock_irqrestore(&Controller->queue_lock, flags);
5685       /*
5686         Wake up any processes waiting on a Health Status Buffer change.
5687       */
5688       wake_up(&Controller->HealthStatusWaitQueue);
5689     }
5690 }
5691
5692 /*
5693   DAC960_CheckStatusBuffer verifies that there is room to hold ByteCount
5694   additional bytes in the Combined Status Buffer and grows the buffer if
5695   necessary.  It returns true if there is enough room and false otherwise.
5696 */
5697
5698 static bool DAC960_CheckStatusBuffer(DAC960_Controller_T *Controller,
5699                                         unsigned int ByteCount)
5700 {
5701   unsigned char *NewStatusBuffer;
5702   if (Controller->InitialStatusLength + 1 +
5703       Controller->CurrentStatusLength + ByteCount + 1 <=
5704       Controller->CombinedStatusBufferLength)
5705     return true;
5706   if (Controller->CombinedStatusBufferLength == 0)
5707     {
5708       unsigned int NewStatusBufferLength = DAC960_InitialStatusBufferSize;
5709       while (NewStatusBufferLength < ByteCount)
5710         NewStatusBufferLength *= 2;
5711       Controller->CombinedStatusBuffer = kmalloc(NewStatusBufferLength,
5712                                                   GFP_ATOMIC);
5713       if (Controller->CombinedStatusBuffer == NULL) return false;
5714       Controller->CombinedStatusBufferLength = NewStatusBufferLength;
5715       return true;
5716     }
5717   NewStatusBuffer = kmalloc(2 * Controller->CombinedStatusBufferLength,
5718                              GFP_ATOMIC);
5719   if (NewStatusBuffer == NULL)
5720     {
5721       DAC960_Warning("Unable to expand Combined Status Buffer - Truncating\n",
5722                      Controller);
5723       return false;
5724     }
5725   memcpy(NewStatusBuffer, Controller->CombinedStatusBuffer,
5726          Controller->CombinedStatusBufferLength);
5727   kfree(Controller->CombinedStatusBuffer);
5728   Controller->CombinedStatusBuffer = NewStatusBuffer;
5729   Controller->CombinedStatusBufferLength *= 2;
5730   Controller->CurrentStatusBuffer =
5731     &NewStatusBuffer[Controller->InitialStatusLength + 1];
5732   return true;
5733 }
5734
5735
5736 /*
5737   DAC960_Message prints Driver Messages.
5738 */
5739
5740 static void DAC960_Message(DAC960_MessageLevel_T MessageLevel,
5741                            unsigned char *Format,
5742                            DAC960_Controller_T *Controller,
5743                            ...)
5744 {
5745   static unsigned char Buffer[DAC960_LineBufferSize];
5746   static bool BeginningOfLine = true;
5747   va_list Arguments;
5748   int Length = 0;
5749   va_start(Arguments, Controller);
5750   Length = vsprintf(Buffer, Format, Arguments);
5751   va_end(Arguments);
5752   if (Controller == NULL)
5753     printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5754            DAC960_ControllerCount, Buffer);
5755   else if (MessageLevel == DAC960_AnnounceLevel ||
5756            MessageLevel == DAC960_InfoLevel)
5757     {
5758       if (!Controller->ControllerInitialized)
5759         {
5760           if (DAC960_CheckStatusBuffer(Controller, Length))
5761             {
5762               strcpy(&Controller->CombinedStatusBuffer
5763                                   [Controller->InitialStatusLength],
5764                      Buffer);
5765               Controller->InitialStatusLength += Length;
5766               Controller->CurrentStatusBuffer =
5767                 &Controller->CombinedStatusBuffer
5768                              [Controller->InitialStatusLength + 1];
5769             }
5770           if (MessageLevel == DAC960_AnnounceLevel)
5771             {
5772               static int AnnouncementLines = 0;
5773               if (++AnnouncementLines <= 2)
5774                 printk("%sDAC960: %s", DAC960_MessageLevelMap[MessageLevel],
5775                        Buffer);
5776             }
5777           else
5778             {
5779               if (BeginningOfLine)
5780                 {
5781                   if (Buffer[0] != '\n' || Length > 1)
5782                     printk("%sDAC960#%d: %s",
5783                            DAC960_MessageLevelMap[MessageLevel],
5784                            Controller->ControllerNumber, Buffer);
5785                 }
5786               else printk("%s", Buffer);
5787             }
5788         }
5789       else if (DAC960_CheckStatusBuffer(Controller, Length))
5790         {
5791           strcpy(&Controller->CurrentStatusBuffer[
5792                     Controller->CurrentStatusLength], Buffer);
5793           Controller->CurrentStatusLength += Length;
5794         }
5795     }
5796   else if (MessageLevel == DAC960_ProgressLevel)
5797     {
5798       strcpy(Controller->ProgressBuffer, Buffer);
5799       Controller->ProgressBufferLength = Length;
5800       if (Controller->EphemeralProgressMessage)
5801         {
5802           if (time_after_eq(jiffies, Controller->LastProgressReportTime
5803               + DAC960_ProgressReportingInterval))
5804             {
5805               printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5806                      Controller->ControllerNumber, Buffer);
5807               Controller->LastProgressReportTime = jiffies;
5808             }
5809         }
5810       else printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5811                   Controller->ControllerNumber, Buffer);
5812     }
5813   else if (MessageLevel == DAC960_UserCriticalLevel)
5814     {
5815       strcpy(&Controller->UserStatusBuffer[Controller->UserStatusLength],
5816              Buffer);
5817       Controller->UserStatusLength += Length;
5818       if (Buffer[0] != '\n' || Length > 1)
5819         printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5820                Controller->ControllerNumber, Buffer);
5821     }
5822   else
5823     {
5824       if (BeginningOfLine)
5825         printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5826                Controller->ControllerNumber, Buffer);
5827       else printk("%s", Buffer);
5828     }
5829   BeginningOfLine = (Buffer[Length-1] == '\n');
5830 }
5831
5832
5833 /*
5834   DAC960_ParsePhysicalDevice parses spaces followed by a Physical Device
5835   Channel:TargetID specification from a User Command string.  It updates
5836   Channel and TargetID and returns true on success and false on failure.
5837 */
5838
5839 static bool DAC960_ParsePhysicalDevice(DAC960_Controller_T *Controller,
5840                                           char *UserCommandString,
5841                                           unsigned char *Channel,
5842                                           unsigned char *TargetID)
5843 {
5844   char *NewUserCommandString = UserCommandString;
5845   unsigned long XChannel, XTargetID;
5846   while (*UserCommandString == ' ') UserCommandString++;
5847   if (UserCommandString == NewUserCommandString)
5848     return false;
5849   XChannel = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5850   if (NewUserCommandString == UserCommandString ||
5851       *NewUserCommandString != ':' ||
5852       XChannel >= Controller->Channels)
5853     return false;
5854   UserCommandString = ++NewUserCommandString;
5855   XTargetID = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5856   if (NewUserCommandString == UserCommandString ||
5857       *NewUserCommandString != '\0' ||
5858       XTargetID >= Controller->Targets)
5859     return false;
5860   *Channel = XChannel;
5861   *TargetID = XTargetID;
5862   return true;
5863 }
5864
5865
5866 /*
5867   DAC960_ParseLogicalDrive parses spaces followed by a Logical Drive Number
5868   specification from a User Command string.  It updates LogicalDriveNumber and
5869   returns true on success and false on failure.
5870 */
5871
5872 static bool DAC960_ParseLogicalDrive(DAC960_Controller_T *Controller,
5873                                         char *UserCommandString,
5874                                         unsigned char *LogicalDriveNumber)
5875 {
5876   char *NewUserCommandString = UserCommandString;
5877   unsigned long XLogicalDriveNumber;
5878   while (*UserCommandString == ' ') UserCommandString++;
5879   if (UserCommandString == NewUserCommandString)
5880     return false;
5881   XLogicalDriveNumber =
5882     simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5883   if (NewUserCommandString == UserCommandString ||
5884       *NewUserCommandString != '\0' ||
5885       XLogicalDriveNumber > DAC960_MaxLogicalDrives - 1)
5886     return false;
5887   *LogicalDriveNumber = XLogicalDriveNumber;
5888   return true;
5889 }
5890
5891
5892 /*
5893   DAC960_V1_SetDeviceState sets the Device State for a Physical Device for
5894   DAC960 V1 Firmware Controllers.
5895 */
5896
5897 static void DAC960_V1_SetDeviceState(DAC960_Controller_T *Controller,
5898                                      DAC960_Command_T *Command,
5899                                      unsigned char Channel,
5900                                      unsigned char TargetID,
5901                                      DAC960_V1_PhysicalDeviceState_T
5902                                        DeviceState,
5903                                      const unsigned char *DeviceStateString)
5904 {
5905   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5906   CommandMailbox->Type3D.CommandOpcode = DAC960_V1_StartDevice;
5907   CommandMailbox->Type3D.Channel = Channel;
5908   CommandMailbox->Type3D.TargetID = TargetID;
5909   CommandMailbox->Type3D.DeviceState = DeviceState;
5910   CommandMailbox->Type3D.Modifier = 0;
5911   DAC960_ExecuteCommand(Command);
5912   switch (Command->V1.CommandStatus)
5913     {
5914     case DAC960_V1_NormalCompletion:
5915       DAC960_UserCritical("%s of Physical Device %d:%d Succeeded\n", Controller,
5916                           DeviceStateString, Channel, TargetID);
5917       break;
5918     case DAC960_V1_UnableToStartDevice:
5919       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5920                           "Unable to Start Device\n", Controller,
5921                           DeviceStateString, Channel, TargetID);
5922       break;
5923     case DAC960_V1_NoDeviceAtAddress:
5924       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5925                           "No Device at Address\n", Controller,
5926                           DeviceStateString, Channel, TargetID);
5927       break;
5928     case DAC960_V1_InvalidChannelOrTargetOrModifier:
5929       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5930                           "Invalid Channel or Target or Modifier\n",
5931                           Controller, DeviceStateString, Channel, TargetID);
5932       break;
5933     case DAC960_V1_ChannelBusy:
5934       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5935                           "Channel Busy\n", Controller,
5936                           DeviceStateString, Channel, TargetID);
5937       break;
5938     default:
5939       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5940                           "Unexpected Status %04X\n", Controller,
5941                           DeviceStateString, Channel, TargetID,
5942                           Command->V1.CommandStatus);
5943       break;
5944     }
5945 }
5946
5947
5948 /*
5949   DAC960_V1_ExecuteUserCommand executes a User Command for DAC960 V1 Firmware
5950   Controllers.
5951 */
5952
5953 static bool DAC960_V1_ExecuteUserCommand(DAC960_Controller_T *Controller,
5954                                             unsigned char *UserCommand)
5955 {
5956   DAC960_Command_T *Command;
5957   DAC960_V1_CommandMailbox_T *CommandMailbox;
5958   unsigned long flags;
5959   unsigned char Channel, TargetID, LogicalDriveNumber;
5960
5961   spin_lock_irqsave(&Controller->queue_lock, flags);
5962   while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
5963     DAC960_WaitForCommand(Controller);
5964   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5965   Controller->UserStatusLength = 0;
5966   DAC960_V1_ClearCommand(Command);
5967   Command->CommandType = DAC960_ImmediateCommand;
5968   CommandMailbox = &Command->V1.CommandMailbox;
5969   if (strcmp(UserCommand, "flush-cache") == 0)
5970     {
5971       CommandMailbox->Type3.CommandOpcode = DAC960_V1_Flush;
5972       DAC960_ExecuteCommand(Command);
5973       DAC960_UserCritical("Cache Flush Completed\n", Controller);
5974     }
5975   else if (strncmp(UserCommand, "kill", 4) == 0 &&
5976            DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
5977                                       &Channel, &TargetID))
5978     {
5979       DAC960_V1_DeviceState_T *DeviceState =
5980         &Controller->V1.DeviceState[Channel][TargetID];
5981       if (DeviceState->Present &&
5982           DeviceState->DeviceType == DAC960_V1_DiskType &&
5983           DeviceState->DeviceState != DAC960_V1_Device_Dead)
5984         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
5985                                  DAC960_V1_Device_Dead, "Kill");
5986       else DAC960_UserCritical("Kill of Physical Device %d:%d Illegal\n",
5987                                Controller, Channel, TargetID);
5988     }
5989   else if (strncmp(UserCommand, "make-online", 11) == 0 &&
5990            DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
5991                                       &Channel, &TargetID))
5992     {
5993       DAC960_V1_DeviceState_T *DeviceState =
5994         &Controller->V1.DeviceState[Channel][TargetID];
5995       if (DeviceState->Present &&
5996           DeviceState->DeviceType == DAC960_V1_DiskType &&
5997           DeviceState->DeviceState == DAC960_V1_Device_Dead)
5998         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
5999                                  DAC960_V1_Device_Online, "Make Online");
6000       else DAC960_UserCritical("Make Online of Physical Device %d:%d Illegal\n",
6001                                Controller, Channel, TargetID);
6002
6003     }
6004   else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
6005            DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
6006                                       &Channel, &TargetID))
6007     {
6008       DAC960_V1_DeviceState_T *DeviceState =
6009         &Controller->V1.DeviceState[Channel][TargetID];
6010       if (DeviceState->Present &&
6011           DeviceState->DeviceType == DAC960_V1_DiskType &&
6012           DeviceState->DeviceState == DAC960_V1_Device_Dead)
6013         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
6014                                  DAC960_V1_Device_Standby, "Make Standby");
6015       else DAC960_UserCritical("Make Standby of Physical "
6016                                "Device %d:%d Illegal\n",
6017                                Controller, Channel, TargetID);
6018     }
6019   else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
6020            DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
6021                                       &Channel, &TargetID))
6022     {
6023       CommandMailbox->Type3D.CommandOpcode = DAC960_V1_RebuildAsync;
6024       CommandMailbox->Type3D.Channel = Channel;
6025       CommandMailbox->Type3D.TargetID = TargetID;
6026       DAC960_ExecuteCommand(Command);
6027       switch (Command->V1.CommandStatus)
6028         {
6029         case DAC960_V1_NormalCompletion:
6030           DAC960_UserCritical("Rebuild of Physical Device %d:%d Initiated\n",
6031                               Controller, Channel, TargetID);
6032           break;
6033         case DAC960_V1_AttemptToRebuildOnlineDrive:
6034           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6035                               "Attempt to Rebuild Online or "
6036                               "Unresponsive Drive\n",
6037                               Controller, Channel, TargetID);
6038           break;
6039         case DAC960_V1_NewDiskFailedDuringRebuild:
6040           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6041                               "New Disk Failed During Rebuild\n",
6042                               Controller, Channel, TargetID);
6043           break;
6044         case DAC960_V1_InvalidDeviceAddress:
6045           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6046                               "Invalid Device Address\n",
6047                               Controller, Channel, TargetID);
6048           break;
6049         case DAC960_V1_RebuildOrCheckAlreadyInProgress:
6050           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6051                               "Rebuild or Consistency Check Already "
6052                               "in Progress\n", Controller, Channel, TargetID);
6053           break;
6054         default:
6055           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6056                               "Unexpected Status %04X\n", Controller,
6057                               Channel, TargetID, Command->V1.CommandStatus);
6058           break;
6059         }
6060     }
6061   else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
6062            DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
6063                                     &LogicalDriveNumber))
6064     {
6065       CommandMailbox->Type3C.CommandOpcode = DAC960_V1_CheckConsistencyAsync;
6066       CommandMailbox->Type3C.LogicalDriveNumber = LogicalDriveNumber;
6067       CommandMailbox->Type3C.AutoRestore = true;
6068       DAC960_ExecuteCommand(Command);
6069       switch (Command->V1.CommandStatus)
6070         {
6071         case DAC960_V1_NormalCompletion:
6072           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6073                               "(/dev/rd/c%dd%d) Initiated\n",
6074                               Controller, LogicalDriveNumber,
6075                               Controller->ControllerNumber,
6076                               LogicalDriveNumber);
6077           break;
6078         case DAC960_V1_DependentDiskIsDead:
6079           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6080                               "(/dev/rd/c%dd%d) Failed - "
6081                               "Dependent Physical Device is DEAD\n",
6082                               Controller, LogicalDriveNumber,
6083                               Controller->ControllerNumber,
6084                               LogicalDriveNumber);
6085           break;
6086         case DAC960_V1_InvalidOrNonredundantLogicalDrive:
6087           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6088                               "(/dev/rd/c%dd%d) Failed - "
6089                               "Invalid or Nonredundant Logical Drive\n",
6090                               Controller, LogicalDriveNumber,
6091                               Controller->ControllerNumber,
6092                               LogicalDriveNumber);
6093           break;
6094         case DAC960_V1_RebuildOrCheckAlreadyInProgress:
6095           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6096                               "(/dev/rd/c%dd%d) Failed - Rebuild or "
6097                               "Consistency Check Already in Progress\n",
6098                               Controller, LogicalDriveNumber,
6099                               Controller->ControllerNumber,
6100                               LogicalDriveNumber);
6101           break;
6102         default:
6103           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6104                               "(/dev/rd/c%dd%d) Failed - "
6105                               "Unexpected Status %04X\n",
6106                               Controller, LogicalDriveNumber,
6107                               Controller->ControllerNumber,
6108                               LogicalDriveNumber, Command->V1.CommandStatus);
6109           break;
6110         }
6111     }
6112   else if (strcmp(UserCommand, "cancel-rebuild") == 0 ||
6113            strcmp(UserCommand, "cancel-consistency-check") == 0)
6114     {
6115       /*
6116         the OldRebuildRateConstant is never actually used
6117         once its value is retrieved from the controller.
6118        */
6119       unsigned char *OldRebuildRateConstant;
6120       dma_addr_t OldRebuildRateConstantDMA;
6121
6122       OldRebuildRateConstant = pci_alloc_consistent( Controller->PCIDevice,
6123                 sizeof(char), &OldRebuildRateConstantDMA);
6124       if (OldRebuildRateConstant == NULL) {
6125          DAC960_UserCritical("Cancellation of Rebuild or "
6126                              "Consistency Check Failed - "
6127                              "Out of Memory",
6128                              Controller);
6129          goto failure;
6130       }
6131       CommandMailbox->Type3R.CommandOpcode = DAC960_V1_RebuildControl;
6132       CommandMailbox->Type3R.RebuildRateConstant = 0xFF;
6133       CommandMailbox->Type3R.BusAddress = OldRebuildRateConstantDMA;
6134       DAC960_ExecuteCommand(Command);
6135       switch (Command->V1.CommandStatus)
6136         {
6137         case DAC960_V1_NormalCompletion:
6138           DAC960_UserCritical("Rebuild or Consistency Check Cancelled\n",
6139                               Controller);
6140           break;
6141         default:
6142           DAC960_UserCritical("Cancellation of Rebuild or "
6143                               "Consistency Check Failed - "
6144                               "Unexpected Status %04X\n",
6145                               Controller, Command->V1.CommandStatus);
6146           break;
6147         }
6148 failure:
6149         pci_free_consistent(Controller->PCIDevice, sizeof(char),
6150                 OldRebuildRateConstant, OldRebuildRateConstantDMA);
6151     }
6152   else DAC960_UserCritical("Illegal User Command: '%s'\n",
6153                            Controller, UserCommand);
6154
6155   spin_lock_irqsave(&Controller->queue_lock, flags);
6156   DAC960_DeallocateCommand(Command);
6157   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6158   return true;
6159 }
6160
6161
6162 /*
6163   DAC960_V2_TranslatePhysicalDevice translates a Physical Device Channel and
6164   TargetID into a Logical Device.  It returns true on success and false
6165   on failure.
6166 */
6167
6168 static bool DAC960_V2_TranslatePhysicalDevice(DAC960_Command_T *Command,
6169                                                  unsigned char Channel,
6170                                                  unsigned char TargetID,
6171                                                  unsigned short
6172                                                    *LogicalDeviceNumber)
6173 {
6174   DAC960_V2_CommandMailbox_T SavedCommandMailbox, *CommandMailbox;
6175   DAC960_Controller_T *Controller =  Command->Controller;
6176
6177   CommandMailbox = &Command->V2.CommandMailbox;
6178   memcpy(&SavedCommandMailbox, CommandMailbox,
6179          sizeof(DAC960_V2_CommandMailbox_T));
6180
6181   CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
6182   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
6183                                     .DataTransferControllerToHost = true;
6184   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
6185                                     .NoAutoRequestSense = true;
6186   CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
6187     sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
6188   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
6189   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
6190   CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
6191     DAC960_V2_TranslatePhysicalToLogicalDevice;
6192   CommandMailbox->Common.DataTransferMemoryAddress
6193                         .ScatterGatherSegments[0]
6194                         .SegmentDataPointer =
6195                 Controller->V2.PhysicalToLogicalDeviceDMA;
6196   CommandMailbox->Common.DataTransferMemoryAddress
6197                         .ScatterGatherSegments[0]
6198                         .SegmentByteCount =
6199                 CommandMailbox->Common.DataTransferSize;
6200
6201   DAC960_ExecuteCommand(Command);
6202   *LogicalDeviceNumber = Controller->V2.PhysicalToLogicalDevice->LogicalDeviceNumber;
6203
6204   memcpy(CommandMailbox, &SavedCommandMailbox,
6205          sizeof(DAC960_V2_CommandMailbox_T));
6206   return (Command->V2.CommandStatus == DAC960_V2_NormalCompletion);
6207 }
6208
6209
6210 /*
6211   DAC960_V2_ExecuteUserCommand executes a User Command for DAC960 V2 Firmware
6212   Controllers.
6213 */
6214
6215 static bool DAC960_V2_ExecuteUserCommand(DAC960_Controller_T *Controller,
6216                                             unsigned char *UserCommand)
6217 {
6218   DAC960_Command_T *Command;
6219   DAC960_V2_CommandMailbox_T *CommandMailbox;
6220   unsigned long flags;
6221   unsigned char Channel, TargetID, LogicalDriveNumber;
6222   unsigned short LogicalDeviceNumber;
6223
6224   spin_lock_irqsave(&Controller->queue_lock, flags);
6225   while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6226     DAC960_WaitForCommand(Controller);
6227   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6228   Controller->UserStatusLength = 0;
6229   DAC960_V2_ClearCommand(Command);
6230   Command->CommandType = DAC960_ImmediateCommand;
6231   CommandMailbox = &Command->V2.CommandMailbox;
6232   CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
6233   CommandMailbox->Common.CommandControlBits.DataTransferControllerToHost = true;
6234   CommandMailbox->Common.CommandControlBits.NoAutoRequestSense = true;
6235   if (strcmp(UserCommand, "flush-cache") == 0)
6236     {
6237       CommandMailbox->DeviceOperation.IOCTL_Opcode = DAC960_V2_PauseDevice;
6238       CommandMailbox->DeviceOperation.OperationDevice =
6239         DAC960_V2_RAID_Controller;
6240       DAC960_ExecuteCommand(Command);
6241       DAC960_UserCritical("Cache Flush Completed\n", Controller);
6242     }
6243   else if (strncmp(UserCommand, "kill", 4) == 0 &&
6244            DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
6245                                       &Channel, &TargetID) &&
6246            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6247                                              &LogicalDeviceNumber))
6248     {
6249       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6250         LogicalDeviceNumber;
6251       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6252         DAC960_V2_SetDeviceState;
6253       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6254         DAC960_V2_Device_Dead;
6255       DAC960_ExecuteCommand(Command);
6256       DAC960_UserCritical("Kill of Physical Device %d:%d %s\n",
6257                           Controller, Channel, TargetID,
6258                           (Command->V2.CommandStatus
6259                            == DAC960_V2_NormalCompletion
6260                            ? "Succeeded" : "Failed"));
6261     }
6262   else if (strncmp(UserCommand, "make-online", 11) == 0 &&
6263            DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
6264                                       &Channel, &TargetID) &&
6265            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6266                                              &LogicalDeviceNumber))
6267     {
6268       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6269         LogicalDeviceNumber;
6270       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6271         DAC960_V2_SetDeviceState;
6272       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6273         DAC960_V2_Device_Online;
6274       DAC960_ExecuteCommand(Command);
6275       DAC960_UserCritical("Make Online of Physical Device %d:%d %s\n",
6276                           Controller, Channel, TargetID,
6277                           (Command->V2.CommandStatus
6278                            == DAC960_V2_NormalCompletion
6279                            ? "Succeeded" : "Failed"));
6280     }
6281   else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
6282            DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
6283                                       &Channel, &TargetID) &&
6284            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6285                                              &LogicalDeviceNumber))
6286     {
6287       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6288         LogicalDeviceNumber;
6289       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6290         DAC960_V2_SetDeviceState;
6291       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6292         DAC960_V2_Device_Standby;
6293       DAC960_ExecuteCommand(Command);
6294       DAC960_UserCritical("Make Standby of Physical Device %d:%d %s\n",
6295                           Controller, Channel, TargetID,
6296                           (Command->V2.CommandStatus
6297                            == DAC960_V2_NormalCompletion
6298                            ? "Succeeded" : "Failed"));
6299     }
6300   else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
6301            DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
6302                                       &Channel, &TargetID) &&
6303            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6304                                              &LogicalDeviceNumber))
6305     {
6306       CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
6307         LogicalDeviceNumber;
6308       CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
6309         DAC960_V2_RebuildDeviceStart;
6310       DAC960_ExecuteCommand(Command);
6311       DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
6312                           Controller, Channel, TargetID,
6313                           (Command->V2.CommandStatus
6314                            == DAC960_V2_NormalCompletion
6315                            ? "Initiated" : "Not Initiated"));
6316     }
6317   else if (strncmp(UserCommand, "cancel-rebuild", 14) == 0 &&
6318            DAC960_ParsePhysicalDevice(Controller, &UserCommand[14],
6319                                       &Channel, &TargetID) &&
6320            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6321                                              &LogicalDeviceNumber))
6322     {
6323       CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
6324         LogicalDeviceNumber;
6325       CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
6326         DAC960_V2_RebuildDeviceStop;
6327       DAC960_ExecuteCommand(Command);
6328       DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
6329                           Controller, Channel, TargetID,
6330                           (Command->V2.CommandStatus
6331                            == DAC960_V2_NormalCompletion
6332                            ? "Cancelled" : "Not Cancelled"));
6333     }
6334   else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
6335            DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
6336                                     &LogicalDriveNumber))
6337     {
6338       CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
6339         LogicalDriveNumber;
6340       CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
6341         DAC960_V2_ConsistencyCheckStart;
6342       CommandMailbox->ConsistencyCheck.RestoreConsistency = true;
6343       CommandMailbox->ConsistencyCheck.InitializedAreaOnly = false;
6344       DAC960_ExecuteCommand(Command);
6345       DAC960_UserCritical("Consistency Check of Logical Drive %d "
6346                           "(/dev/rd/c%dd%d) %s\n",
6347                           Controller, LogicalDriveNumber,
6348                           Controller->ControllerNumber,
6349                           LogicalDriveNumber,
6350                           (Command->V2.CommandStatus
6351                            == DAC960_V2_NormalCompletion
6352                            ? "Initiated" : "Not Initiated"));
6353     }
6354   else if (strncmp(UserCommand, "cancel-consistency-check", 24) == 0 &&
6355            DAC960_ParseLogicalDrive(Controller, &UserCommand[24],
6356                                     &LogicalDriveNumber))
6357     {
6358       CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
6359         LogicalDriveNumber;
6360       CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
6361         DAC960_V2_ConsistencyCheckStop;
6362       DAC960_ExecuteCommand(Command);
6363       DAC960_UserCritical("Consistency Check of Logical Drive %d "
6364                           "(/dev/rd/c%dd%d) %s\n",
6365                           Controller, LogicalDriveNumber,
6366                           Controller->ControllerNumber,
6367                           LogicalDriveNumber,
6368                           (Command->V2.CommandStatus
6369                            == DAC960_V2_NormalCompletion
6370                            ? "Cancelled" : "Not Cancelled"));
6371     }
6372   else if (strcmp(UserCommand, "perform-discovery") == 0)
6373     {
6374       CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_StartDiscovery;
6375       DAC960_ExecuteCommand(Command);
6376       DAC960_UserCritical("Discovery %s\n", Controller,
6377                           (Command->V2.CommandStatus
6378                            == DAC960_V2_NormalCompletion
6379                            ? "Initiated" : "Not Initiated"));
6380       if (Command->V2.CommandStatus == DAC960_V2_NormalCompletion)
6381         {
6382           CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
6383           CommandMailbox->ControllerInfo.CommandControlBits
6384                                         .DataTransferControllerToHost = true;
6385           CommandMailbox->ControllerInfo.CommandControlBits
6386                                         .NoAutoRequestSense = true;
6387           CommandMailbox->ControllerInfo.DataTransferSize =
6388             sizeof(DAC960_V2_ControllerInfo_T);
6389           CommandMailbox->ControllerInfo.ControllerNumber = 0;
6390           CommandMailbox->ControllerInfo.IOCTL_Opcode =
6391             DAC960_V2_GetControllerInfo;
6392           /*
6393            * How does this NOT race with the queued Monitoring
6394            * usage of this structure?
6395            */
6396           CommandMailbox->ControllerInfo.DataTransferMemoryAddress
6397                                         .ScatterGatherSegments[0]
6398                                         .SegmentDataPointer =
6399             Controller->V2.NewControllerInformationDMA;
6400           CommandMailbox->ControllerInfo.DataTransferMemoryAddress
6401                                         .ScatterGatherSegments[0]
6402                                         .SegmentByteCount =
6403             CommandMailbox->ControllerInfo.DataTransferSize;
6404           DAC960_ExecuteCommand(Command);
6405           while (Controller->V2.NewControllerInformation->PhysicalScanActive)
6406             {
6407               DAC960_ExecuteCommand(Command);
6408               sleep_on_timeout(&Controller->CommandWaitQueue, HZ);
6409             }
6410           DAC960_UserCritical("Discovery Completed\n", Controller);
6411         }
6412     }
6413   else if (strcmp(UserCommand, "suppress-enclosure-messages") == 0)
6414     Controller->SuppressEnclosureMessages = true;
6415   else DAC960_UserCritical("Illegal User Command: '%s'\n",
6416                            Controller, UserCommand);
6417
6418   spin_lock_irqsave(&Controller->queue_lock, flags);
6419   DAC960_DeallocateCommand(Command);
6420   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6421   return true;
6422 }
6423
6424
6425 /*
6426   DAC960_ProcReadStatus implements reading /proc/rd/status.
6427 */
6428
6429 static int DAC960_ProcReadStatus(char *Page, char **Start, off_t Offset,
6430                                  int Count, int *EOF, void *Data)
6431 {
6432   unsigned char *StatusMessage = "OK\n";
6433   int ControllerNumber, BytesAvailable;
6434   for (ControllerNumber = 0;
6435        ControllerNumber < DAC960_ControllerCount;
6436        ControllerNumber++)
6437     {
6438       DAC960_Controller_T *Controller = DAC960_Controllers[ControllerNumber];
6439       if (Controller == NULL) continue;
6440       if (Controller->MonitoringAlertMode)
6441         {
6442           StatusMessage = "ALERT\n";
6443           break;
6444         }
6445     }
6446   BytesAvailable = strlen(StatusMessage) - Offset;
6447   if (Count >= BytesAvailable)
6448     {
6449       Count = BytesAvailable;
6450       *EOF = true;
6451     }
6452   if (Count <= 0) return 0;
6453   *Start = Page;
6454   memcpy(Page, &StatusMessage[Offset], Count);
6455   return Count;
6456 }
6457
6458
6459 /*
6460   DAC960_ProcReadInitialStatus implements reading /proc/rd/cN/initial_status.
6461 */
6462
6463 static int DAC960_ProcReadInitialStatus(char *Page, char **Start, off_t Offset,
6464                                         int Count, int *EOF, void *Data)
6465 {
6466   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6467   int BytesAvailable = Controller->InitialStatusLength - Offset;
6468   if (Count >= BytesAvailable)
6469     {
6470       Count = BytesAvailable;
6471       *EOF = true;
6472     }
6473   if (Count <= 0) return 0;
6474   *Start = Page;
6475   memcpy(Page, &Controller->CombinedStatusBuffer[Offset], Count);
6476   return Count;
6477 }
6478
6479
6480 /*
6481   DAC960_ProcReadCurrentStatus implements reading /proc/rd/cN/current_status.
6482 */
6483
6484 static int DAC960_ProcReadCurrentStatus(char *Page, char **Start, off_t Offset,
6485                                         int Count, int *EOF, void *Data)
6486 {
6487   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6488   unsigned char *StatusMessage =
6489     "No Rebuild or Consistency Check in Progress\n";
6490   int ProgressMessageLength = strlen(StatusMessage);
6491   int BytesAvailable;
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   BytesAvailable = Controller->CurrentStatusLength - Offset;
6516   if (Count >= BytesAvailable)
6517     {
6518       Count = BytesAvailable;
6519       *EOF = true;
6520     }
6521   if (Count <= 0) return 0;
6522   *Start = Page;
6523   memcpy(Page, &Controller->CurrentStatusBuffer[Offset], Count);
6524   return Count;
6525 }
6526
6527
6528 /*
6529   DAC960_ProcReadUserCommand implements reading /proc/rd/cN/user_command.
6530 */
6531
6532 static int DAC960_ProcReadUserCommand(char *Page, char **Start, off_t Offset,
6533                                       int Count, int *EOF, void *Data)
6534 {
6535   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6536   int BytesAvailable = Controller->UserStatusLength - Offset;
6537   if (Count >= BytesAvailable)
6538     {
6539       Count = BytesAvailable;
6540       *EOF = true;
6541     }
6542   if (Count <= 0) return 0;
6543   *Start = Page;
6544   memcpy(Page, &Controller->UserStatusBuffer[Offset], Count);
6545   return Count;
6546 }
6547
6548
6549 /*
6550   DAC960_ProcWriteUserCommand implements writing /proc/rd/cN/user_command.
6551 */
6552
6553 static int DAC960_ProcWriteUserCommand(struct file *file,
6554                                        const char __user *Buffer,
6555                                        unsigned long Count, void *Data)
6556 {
6557   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6558   unsigned char CommandBuffer[80];
6559   int Length;
6560   if (Count > sizeof(CommandBuffer)-1) return -EINVAL;
6561   if (copy_from_user(CommandBuffer, Buffer, Count)) return -EFAULT;
6562   CommandBuffer[Count] = '\0';
6563   Length = strlen(CommandBuffer);
6564   if (CommandBuffer[Length-1] == '\n')
6565     CommandBuffer[--Length] = '\0';
6566   if (Controller->FirmwareType == DAC960_V1_Controller)
6567     return (DAC960_V1_ExecuteUserCommand(Controller, CommandBuffer)
6568             ? Count : -EBUSY);
6569   else
6570     return (DAC960_V2_ExecuteUserCommand(Controller, CommandBuffer)
6571             ? Count : -EBUSY);
6572 }
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 = create_proc_read_entry("status", 0,
6589                                            DAC960_ProcDirectoryEntry,
6590                                            DAC960_ProcReadStatus, NULL);
6591         }
6592
6593       sprintf(Controller->ControllerName, "c%d", Controller->ControllerNumber);
6594       ControllerProcEntry = proc_mkdir(Controller->ControllerName,
6595                                        DAC960_ProcDirectoryEntry);
6596       create_proc_read_entry("initial_status", 0, ControllerProcEntry,
6597                              DAC960_ProcReadInitialStatus, Controller);
6598       create_proc_read_entry("current_status", 0, ControllerProcEntry,
6599                              DAC960_ProcReadCurrentStatus, Controller);
6600       UserCommandProcEntry =
6601         create_proc_read_entry("user_command", S_IWUSR | S_IRUSR,
6602                                ControllerProcEntry, DAC960_ProcReadUserCommand,
6603                                Controller);
6604       UserCommandProcEntry->write_proc = DAC960_ProcWriteUserCommand;
6605       Controller->ControllerProcEntry = ControllerProcEntry;
6606 }
6607
6608
6609 /*
6610   DAC960_DestroyProcEntries destroys the /proc/rd/... entries for the
6611   DAC960 Driver.
6612 */
6613
6614 static void DAC960_DestroyProcEntries(DAC960_Controller_T *Controller)
6615 {
6616       if (Controller->ControllerProcEntry == NULL)
6617               return;
6618       remove_proc_entry("initial_status", Controller->ControllerProcEntry);
6619       remove_proc_entry("current_status", Controller->ControllerProcEntry);
6620       remove_proc_entry("user_command", Controller->ControllerProcEntry);
6621       remove_proc_entry(Controller->ControllerName, DAC960_ProcDirectoryEntry);
6622       Controller->ControllerProcEntry = NULL;
6623 }
6624
6625 #ifdef DAC960_GAM_MINOR
6626
6627 /*
6628  * DAC960_gam_ioctl is the ioctl function for performing RAID operations.
6629 */
6630
6631 static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
6632                             unsigned int Request, unsigned long Argument)
6633 {
6634   int ErrorCode = 0;
6635   if (!capable(CAP_SYS_ADMIN)) return -EACCES;
6636   switch (Request)
6637     {
6638     case DAC960_IOCTL_GET_CONTROLLER_COUNT:
6639       return DAC960_ControllerCount;
6640     case DAC960_IOCTL_GET_CONTROLLER_INFO:
6641       {
6642         DAC960_ControllerInfo_T __user *UserSpaceControllerInfo =
6643           (DAC960_ControllerInfo_T __user *) Argument;
6644         DAC960_ControllerInfo_T ControllerInfo;
6645         DAC960_Controller_T *Controller;
6646         int ControllerNumber;
6647         if (UserSpaceControllerInfo == NULL) return -EINVAL;
6648         ErrorCode = get_user(ControllerNumber,
6649                              &UserSpaceControllerInfo->ControllerNumber);
6650         if (ErrorCode != 0) return ErrorCode;
6651         if (ControllerNumber < 0 ||
6652             ControllerNumber > DAC960_ControllerCount - 1)
6653           return -ENXIO;
6654         Controller = DAC960_Controllers[ControllerNumber];
6655         if (Controller == NULL) return -ENXIO;
6656         memset(&ControllerInfo, 0, sizeof(DAC960_ControllerInfo_T));
6657         ControllerInfo.ControllerNumber = ControllerNumber;
6658         ControllerInfo.FirmwareType = Controller->FirmwareType;
6659         ControllerInfo.Channels = Controller->Channels;
6660         ControllerInfo.Targets = Controller->Targets;
6661         ControllerInfo.PCI_Bus = Controller->Bus;
6662         ControllerInfo.PCI_Device = Controller->Device;
6663         ControllerInfo.PCI_Function = Controller->Function;
6664         ControllerInfo.IRQ_Channel = Controller->IRQ_Channel;
6665         ControllerInfo.PCI_Address = Controller->PCI_Address;
6666         strcpy(ControllerInfo.ModelName, Controller->ModelName);
6667         strcpy(ControllerInfo.FirmwareVersion, Controller->FirmwareVersion);
6668         return (copy_to_user(UserSpaceControllerInfo, &ControllerInfo,
6669                              sizeof(DAC960_ControllerInfo_T)) ? -EFAULT : 0);
6670       }
6671     case DAC960_IOCTL_V1_EXECUTE_COMMAND:
6672       {
6673         DAC960_V1_UserCommand_T __user *UserSpaceUserCommand =
6674           (DAC960_V1_UserCommand_T __user *) Argument;
6675         DAC960_V1_UserCommand_T UserCommand;
6676         DAC960_Controller_T *Controller;
6677         DAC960_Command_T *Command = NULL;
6678         DAC960_V1_CommandOpcode_T CommandOpcode;
6679         DAC960_V1_CommandStatus_T CommandStatus;
6680         DAC960_V1_DCDB_T DCDB;
6681         DAC960_V1_DCDB_T *DCDB_IOBUF = NULL;
6682         dma_addr_t      DCDB_IOBUFDMA;
6683         unsigned long flags;
6684         int ControllerNumber, DataTransferLength;
6685         unsigned char *DataTransferBuffer = NULL;
6686         dma_addr_t DataTransferBufferDMA;
6687         if (UserSpaceUserCommand == NULL) return -EINVAL;
6688         if (copy_from_user(&UserCommand, UserSpaceUserCommand,
6689                                    sizeof(DAC960_V1_UserCommand_T))) {
6690                 ErrorCode = -EFAULT;
6691                 goto Failure1a;
6692         }
6693         ControllerNumber = UserCommand.ControllerNumber;
6694         if (ControllerNumber < 0 ||
6695             ControllerNumber > DAC960_ControllerCount - 1)
6696           return -ENXIO;
6697         Controller = DAC960_Controllers[ControllerNumber];
6698         if (Controller == NULL) return -ENXIO;
6699         if (Controller->FirmwareType != DAC960_V1_Controller) return -EINVAL;
6700         CommandOpcode = UserCommand.CommandMailbox.Common.CommandOpcode;
6701         DataTransferLength = UserCommand.DataTransferLength;
6702         if (CommandOpcode & 0x80) return -EINVAL;
6703         if (CommandOpcode == DAC960_V1_DCDB)
6704           {
6705             if (copy_from_user(&DCDB, UserCommand.DCDB,
6706                                sizeof(DAC960_V1_DCDB_T))) {
6707                 ErrorCode = -EFAULT;
6708                 goto Failure1a;
6709             }
6710             if (DCDB.Channel >= DAC960_V1_MaxChannels) return -EINVAL;
6711             if (!((DataTransferLength == 0 &&
6712                    DCDB.Direction
6713                    == DAC960_V1_DCDB_NoDataTransfer) ||
6714                   (DataTransferLength > 0 &&
6715                    DCDB.Direction
6716                    == DAC960_V1_DCDB_DataTransferDeviceToSystem) ||
6717                   (DataTransferLength < 0 &&
6718                    DCDB.Direction
6719                    == DAC960_V1_DCDB_DataTransferSystemToDevice)))
6720               return -EINVAL;
6721             if (((DCDB.TransferLengthHigh4 << 16) | DCDB.TransferLength)
6722                 != abs(DataTransferLength))
6723               return -EINVAL;
6724             DCDB_IOBUF = pci_alloc_consistent(Controller->PCIDevice,
6725                         sizeof(DAC960_V1_DCDB_T), &DCDB_IOBUFDMA);
6726             if (DCDB_IOBUF == NULL)
6727                         return -ENOMEM;
6728           }
6729         if (DataTransferLength > 0)
6730           {
6731             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6732                                 DataTransferLength, &DataTransferBufferDMA);
6733             if (DataTransferBuffer == NULL) {
6734                 ErrorCode = -ENOMEM;
6735                 goto Failure1;
6736             }
6737             memset(DataTransferBuffer, 0, DataTransferLength);
6738           }
6739         else if (DataTransferLength < 0)
6740           {
6741             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6742                                 -DataTransferLength, &DataTransferBufferDMA);
6743             if (DataTransferBuffer == NULL) {
6744                 ErrorCode = -ENOMEM;
6745                 goto Failure1;
6746             }
6747             if (copy_from_user(DataTransferBuffer,
6748                                UserCommand.DataTransferBuffer,
6749                                -DataTransferLength)) {
6750                 ErrorCode = -EFAULT;
6751                 goto Failure1;
6752             }
6753           }
6754         if (CommandOpcode == DAC960_V1_DCDB)
6755           {
6756             spin_lock_irqsave(&Controller->queue_lock, flags);
6757             while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6758               DAC960_WaitForCommand(Controller);
6759             while (Controller->V1.DirectCommandActive[DCDB.Channel]
6760                                                      [DCDB.TargetID])
6761               {
6762                 spin_unlock_irq(&Controller->queue_lock);
6763                 __wait_event(Controller->CommandWaitQueue,
6764                              !Controller->V1.DirectCommandActive
6765                                              [DCDB.Channel][DCDB.TargetID]);
6766                 spin_lock_irq(&Controller->queue_lock);
6767               }
6768             Controller->V1.DirectCommandActive[DCDB.Channel]
6769                                               [DCDB.TargetID] = true;
6770             spin_unlock_irqrestore(&Controller->queue_lock, flags);
6771             DAC960_V1_ClearCommand(Command);
6772             Command->CommandType = DAC960_ImmediateCommand;
6773             memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
6774                    sizeof(DAC960_V1_CommandMailbox_T));
6775             Command->V1.CommandMailbox.Type3.BusAddress = DCDB_IOBUFDMA;
6776             DCDB.BusAddress = DataTransferBufferDMA;
6777             memcpy(DCDB_IOBUF, &DCDB, sizeof(DAC960_V1_DCDB_T));
6778           }
6779         else
6780           {
6781             spin_lock_irqsave(&Controller->queue_lock, flags);
6782             while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6783               DAC960_WaitForCommand(Controller);
6784             spin_unlock_irqrestore(&Controller->queue_lock, flags);
6785             DAC960_V1_ClearCommand(Command);
6786             Command->CommandType = DAC960_ImmediateCommand;
6787             memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
6788                    sizeof(DAC960_V1_CommandMailbox_T));
6789             if (DataTransferBuffer != NULL)
6790               Command->V1.CommandMailbox.Type3.BusAddress =
6791                 DataTransferBufferDMA;
6792           }
6793         DAC960_ExecuteCommand(Command);
6794         CommandStatus = Command->V1.CommandStatus;
6795         spin_lock_irqsave(&Controller->queue_lock, flags);
6796         DAC960_DeallocateCommand(Command);
6797         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6798         if (DataTransferLength > 0)
6799           {
6800             if (copy_to_user(UserCommand.DataTransferBuffer,
6801                              DataTransferBuffer, DataTransferLength)) {
6802                 ErrorCode = -EFAULT;
6803                 goto Failure1;
6804             }
6805           }
6806         if (CommandOpcode == DAC960_V1_DCDB)
6807           {
6808             /*
6809               I don't believe Target or Channel in the DCDB_IOBUF
6810               should be any different from the contents of DCDB.
6811              */
6812             Controller->V1.DirectCommandActive[DCDB.Channel]
6813                                               [DCDB.TargetID] = false;
6814             if (copy_to_user(UserCommand.DCDB, DCDB_IOBUF,
6815                              sizeof(DAC960_V1_DCDB_T))) {
6816                 ErrorCode = -EFAULT;
6817                 goto Failure1;
6818             }
6819           }
6820         ErrorCode = CommandStatus;
6821       Failure1:
6822         if (DataTransferBuffer != NULL)
6823           pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
6824                         DataTransferBuffer, DataTransferBufferDMA);
6825         if (DCDB_IOBUF != NULL)
6826           pci_free_consistent(Controller->PCIDevice, sizeof(DAC960_V1_DCDB_T),
6827                         DCDB_IOBUF, DCDB_IOBUFDMA);
6828       Failure1a:
6829         return ErrorCode;
6830       }
6831     case DAC960_IOCTL_V2_EXECUTE_COMMAND:
6832       {
6833         DAC960_V2_UserCommand_T __user *UserSpaceUserCommand =
6834           (DAC960_V2_UserCommand_T __user *) Argument;
6835         DAC960_V2_UserCommand_T UserCommand;
6836         DAC960_Controller_T *Controller;
6837         DAC960_Command_T *Command = NULL;
6838         DAC960_V2_CommandMailbox_T *CommandMailbox;
6839         DAC960_V2_CommandStatus_T CommandStatus;
6840         unsigned long flags;
6841         int ControllerNumber, DataTransferLength;
6842         int DataTransferResidue, RequestSenseLength;
6843         unsigned char *DataTransferBuffer = NULL;
6844         dma_addr_t DataTransferBufferDMA;
6845         unsigned char *RequestSenseBuffer = NULL;
6846         dma_addr_t RequestSenseBufferDMA;
6847         if (UserSpaceUserCommand == NULL) return -EINVAL;
6848         if (copy_from_user(&UserCommand, UserSpaceUserCommand,
6849                            sizeof(DAC960_V2_UserCommand_T))) {
6850                 ErrorCode = -EFAULT;
6851                 goto Failure2a;
6852         }
6853         ControllerNumber = UserCommand.ControllerNumber;
6854         if (ControllerNumber < 0 ||
6855             ControllerNumber > DAC960_ControllerCount - 1)
6856           return -ENXIO;
6857         Controller = DAC960_Controllers[ControllerNumber];
6858         if (Controller == NULL) return -ENXIO;
6859         if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL;
6860         DataTransferLength = UserCommand.DataTransferLength;
6861         if (DataTransferLength > 0)
6862           {
6863             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6864                                 DataTransferLength, &DataTransferBufferDMA);
6865             if (DataTransferBuffer == NULL) return -ENOMEM;
6866             memset(DataTransferBuffer, 0, DataTransferLength);
6867           }
6868         else if (DataTransferLength < 0)
6869           {
6870             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6871                                 -DataTransferLength, &DataTransferBufferDMA);
6872             if (DataTransferBuffer == NULL) return -ENOMEM;
6873             if (copy_from_user(DataTransferBuffer,
6874                                UserCommand.DataTransferBuffer,
6875                                -DataTransferLength)) {
6876                 ErrorCode = -EFAULT;
6877                 goto Failure2;
6878             }
6879           }
6880         RequestSenseLength = UserCommand.RequestSenseLength;
6881         if (RequestSenseLength > 0)
6882           {
6883             RequestSenseBuffer = pci_alloc_consistent(Controller->PCIDevice,
6884                         RequestSenseLength, &RequestSenseBufferDMA);
6885             if (RequestSenseBuffer == NULL)
6886               {
6887                 ErrorCode = -ENOMEM;
6888                 goto Failure2;
6889               }
6890             memset(RequestSenseBuffer, 0, RequestSenseLength);
6891           }
6892         spin_lock_irqsave(&Controller->queue_lock, flags);
6893         while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6894           DAC960_WaitForCommand(Controller);
6895         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6896         DAC960_V2_ClearCommand(Command);
6897         Command->CommandType = DAC960_ImmediateCommand;
6898         CommandMailbox = &Command->V2.CommandMailbox;
6899         memcpy(CommandMailbox, &UserCommand.CommandMailbox,
6900                sizeof(DAC960_V2_CommandMailbox_T));
6901         CommandMailbox->Common.CommandControlBits
6902                               .AdditionalScatterGatherListMemory = false;
6903         CommandMailbox->Common.CommandControlBits
6904                               .NoAutoRequestSense = true;
6905         CommandMailbox->Common.DataTransferSize = 0;
6906         CommandMailbox->Common.DataTransferPageNumber = 0;
6907         memset(&CommandMailbox->Common.DataTransferMemoryAddress, 0,
6908                sizeof(DAC960_V2_DataTransferMemoryAddress_T));
6909         if (DataTransferLength != 0)
6910           {
6911             if (DataTransferLength > 0)
6912               {
6913                 CommandMailbox->Common.CommandControlBits
6914                                       .DataTransferControllerToHost = true;
6915                 CommandMailbox->Common.DataTransferSize = DataTransferLength;
6916               }
6917             else
6918               {
6919                 CommandMailbox->Common.CommandControlBits
6920                                       .DataTransferControllerToHost = false;
6921                 CommandMailbox->Common.DataTransferSize = -DataTransferLength;
6922               }
6923             CommandMailbox->Common.DataTransferMemoryAddress
6924                                   .ScatterGatherSegments[0]
6925                                   .SegmentDataPointer = DataTransferBufferDMA;
6926             CommandMailbox->Common.DataTransferMemoryAddress
6927                                   .ScatterGatherSegments[0]
6928                                   .SegmentByteCount =
6929               CommandMailbox->Common.DataTransferSize;
6930           }
6931         if (RequestSenseLength > 0)
6932           {
6933             CommandMailbox->Common.CommandControlBits
6934                                   .NoAutoRequestSense = false;
6935             CommandMailbox->Common.RequestSenseSize = RequestSenseLength;
6936             CommandMailbox->Common.RequestSenseBusAddress =
6937                                                         RequestSenseBufferDMA;
6938           }
6939         DAC960_ExecuteCommand(Command);
6940         CommandStatus = Command->V2.CommandStatus;
6941         RequestSenseLength = Command->V2.RequestSenseLength;
6942         DataTransferResidue = Command->V2.DataTransferResidue;
6943         spin_lock_irqsave(&Controller->queue_lock, flags);
6944         DAC960_DeallocateCommand(Command);
6945         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6946         if (RequestSenseLength > UserCommand.RequestSenseLength)
6947           RequestSenseLength = UserCommand.RequestSenseLength;
6948         if (copy_to_user(&UserSpaceUserCommand->DataTransferLength,
6949                                  &DataTransferResidue,
6950                                  sizeof(DataTransferResidue))) {
6951                 ErrorCode = -EFAULT;
6952                 goto Failure2;
6953         }
6954         if (copy_to_user(&UserSpaceUserCommand->RequestSenseLength,
6955                          &RequestSenseLength, sizeof(RequestSenseLength))) {
6956                 ErrorCode = -EFAULT;
6957                 goto Failure2;
6958         }
6959         if (DataTransferLength > 0)
6960           {
6961             if (copy_to_user(UserCommand.DataTransferBuffer,
6962                              DataTransferBuffer, DataTransferLength)) {
6963                 ErrorCode = -EFAULT;
6964                 goto Failure2;
6965             }
6966           }
6967         if (RequestSenseLength > 0)
6968           {
6969             if (copy_to_user(UserCommand.RequestSenseBuffer,
6970                              RequestSenseBuffer, RequestSenseLength)) {
6971                 ErrorCode = -EFAULT;
6972                 goto Failure2;
6973             }
6974           }
6975         ErrorCode = CommandStatus;
6976       Failure2:
6977           pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
6978                 DataTransferBuffer, DataTransferBufferDMA);
6979         if (RequestSenseBuffer != NULL)
6980           pci_free_consistent(Controller->PCIDevice, RequestSenseLength,
6981                 RequestSenseBuffer, RequestSenseBufferDMA);
6982       Failure2a:
6983         return ErrorCode;
6984       }
6985     case DAC960_IOCTL_V2_GET_HEALTH_STATUS:
6986       {
6987         DAC960_V2_GetHealthStatus_T __user *UserSpaceGetHealthStatus =
6988           (DAC960_V2_GetHealthStatus_T __user *) Argument;
6989         DAC960_V2_GetHealthStatus_T GetHealthStatus;
6990         DAC960_V2_HealthStatusBuffer_T HealthStatusBuffer;
6991         DAC960_Controller_T *Controller;
6992         int ControllerNumber;
6993         if (UserSpaceGetHealthStatus == NULL) return -EINVAL;
6994         if (copy_from_user(&GetHealthStatus, UserSpaceGetHealthStatus,
6995                            sizeof(DAC960_V2_GetHealthStatus_T)))
6996                 return -EFAULT;
6997         ControllerNumber = GetHealthStatus.ControllerNumber;
6998         if (ControllerNumber < 0 ||
6999             ControllerNumber > DAC960_ControllerCount - 1)
7000           return -ENXIO;
7001         Controller = DAC960_Controllers[ControllerNumber];
7002         if (Controller == NULL) return -ENXIO;
7003         if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL;
7004         if (copy_from_user(&HealthStatusBuffer,
7005                            GetHealthStatus.HealthStatusBuffer,
7006                            sizeof(DAC960_V2_HealthStatusBuffer_T)))
7007                 return -EFAULT;
7008         while (Controller->V2.HealthStatusBuffer->StatusChangeCounter
7009                == HealthStatusBuffer.StatusChangeCounter &&
7010                Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
7011                == HealthStatusBuffer.NextEventSequenceNumber)
7012           {
7013             interruptible_sleep_on_timeout(&Controller->HealthStatusWaitQueue,
7014                                            DAC960_MonitoringTimerInterval);
7015             if (signal_pending(current)) return -EINTR;
7016           }
7017         if (copy_to_user(GetHealthStatus.HealthStatusBuffer,
7018                          Controller->V2.HealthStatusBuffer,
7019                          sizeof(DAC960_V2_HealthStatusBuffer_T)))
7020                 return -EFAULT;
7021         return 0;
7022       }
7023     }
7024   return -EINVAL;
7025 }
7026
7027 static const struct file_operations DAC960_gam_fops = {
7028         .owner          = THIS_MODULE,
7029         .ioctl          = DAC960_gam_ioctl
7030 };
7031
7032 static struct miscdevice DAC960_gam_dev = {
7033         DAC960_GAM_MINOR,
7034         "dac960_gam",
7035         &DAC960_gam_fops
7036 };
7037
7038 static int DAC960_gam_init(void)
7039 {
7040         int ret;
7041
7042         ret = misc_register(&DAC960_gam_dev);
7043         if (ret)
7044                 printk(KERN_ERR "DAC960_gam: can't misc_register on minor %d\n", DAC960_GAM_MINOR);
7045         return ret;
7046 }
7047
7048 static void DAC960_gam_cleanup(void)
7049 {
7050         misc_deregister(&DAC960_gam_dev);
7051 }
7052
7053 #endif /* DAC960_GAM_MINOR */
7054
7055 static struct DAC960_privdata DAC960_GEM_privdata = {
7056         .HardwareType =         DAC960_GEM_Controller,
7057         .FirmwareType   =       DAC960_V2_Controller,
7058         .InterruptHandler =     DAC960_GEM_InterruptHandler,
7059         .MemoryWindowSize =     DAC960_GEM_RegisterWindowSize,
7060 };
7061
7062
7063 static struct DAC960_privdata DAC960_BA_privdata = {
7064         .HardwareType =         DAC960_BA_Controller,
7065         .FirmwareType   =       DAC960_V2_Controller,
7066         .InterruptHandler =     DAC960_BA_InterruptHandler,
7067         .MemoryWindowSize =     DAC960_BA_RegisterWindowSize,
7068 };
7069
7070 static struct DAC960_privdata DAC960_LP_privdata = {
7071         .HardwareType =         DAC960_LP_Controller,
7072         .FirmwareType   =       DAC960_LP_Controller,
7073         .InterruptHandler =     DAC960_LP_InterruptHandler,
7074         .MemoryWindowSize =     DAC960_LP_RegisterWindowSize,
7075 };
7076
7077 static struct DAC960_privdata DAC960_LA_privdata = {
7078         .HardwareType =         DAC960_LA_Controller,
7079         .FirmwareType   =       DAC960_V1_Controller,
7080         .InterruptHandler =     DAC960_LA_InterruptHandler,
7081         .MemoryWindowSize =     DAC960_LA_RegisterWindowSize,
7082 };
7083
7084 static struct DAC960_privdata DAC960_PG_privdata = {
7085         .HardwareType =         DAC960_PG_Controller,
7086         .FirmwareType   =       DAC960_V1_Controller,
7087         .InterruptHandler =     DAC960_PG_InterruptHandler,
7088         .MemoryWindowSize =     DAC960_PG_RegisterWindowSize,
7089 };
7090
7091 static struct DAC960_privdata DAC960_PD_privdata = {
7092         .HardwareType =         DAC960_PD_Controller,
7093         .FirmwareType   =       DAC960_V1_Controller,
7094         .InterruptHandler =     DAC960_PD_InterruptHandler,
7095         .MemoryWindowSize =     DAC960_PD_RegisterWindowSize,
7096 };
7097
7098 static struct DAC960_privdata DAC960_P_privdata = {
7099         .HardwareType =         DAC960_P_Controller,
7100         .FirmwareType   =       DAC960_V1_Controller,
7101         .InterruptHandler =     DAC960_P_InterruptHandler,
7102         .MemoryWindowSize =     DAC960_PD_RegisterWindowSize,
7103 };
7104
7105 static struct pci_device_id DAC960_id_table[] = {
7106         {
7107                 .vendor         = PCI_VENDOR_ID_MYLEX,
7108                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_GEM,
7109                 .subvendor      = PCI_VENDOR_ID_MYLEX,
7110                 .subdevice      = PCI_ANY_ID,
7111                 .driver_data    = (unsigned long) &DAC960_GEM_privdata,
7112         },
7113         {
7114                 .vendor         = PCI_VENDOR_ID_MYLEX,
7115                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_BA,
7116                 .subvendor      = PCI_ANY_ID,
7117                 .subdevice      = PCI_ANY_ID,
7118                 .driver_data    = (unsigned long) &DAC960_BA_privdata,
7119         },
7120         {
7121                 .vendor         = PCI_VENDOR_ID_MYLEX,
7122                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_LP,
7123                 .subvendor      = PCI_ANY_ID,
7124                 .subdevice      = PCI_ANY_ID,
7125                 .driver_data    = (unsigned long) &DAC960_LP_privdata,
7126         },
7127         {
7128                 .vendor         = PCI_VENDOR_ID_DEC,
7129                 .device         = PCI_DEVICE_ID_DEC_21285,
7130                 .subvendor      = PCI_VENDOR_ID_MYLEX,
7131                 .subdevice      = PCI_DEVICE_ID_MYLEX_DAC960_LA,
7132                 .driver_data    = (unsigned long) &DAC960_LA_privdata,
7133         },
7134         {
7135                 .vendor         = PCI_VENDOR_ID_MYLEX,
7136                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_PG,
7137                 .subvendor      = PCI_ANY_ID,
7138                 .subdevice      = PCI_ANY_ID,
7139                 .driver_data    = (unsigned long) &DAC960_PG_privdata,
7140         },
7141         {
7142                 .vendor         = PCI_VENDOR_ID_MYLEX,
7143                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_PD,
7144                 .subvendor      = PCI_ANY_ID,
7145                 .subdevice      = PCI_ANY_ID,
7146                 .driver_data    = (unsigned long) &DAC960_PD_privdata,
7147         },
7148         {
7149                 .vendor         = PCI_VENDOR_ID_MYLEX,
7150                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_P,
7151                 .subvendor      = PCI_ANY_ID,
7152                 .subdevice      = PCI_ANY_ID,
7153                 .driver_data    = (unsigned long) &DAC960_P_privdata,
7154         },
7155         {0, },
7156 };
7157
7158 MODULE_DEVICE_TABLE(pci, DAC960_id_table);
7159
7160 static struct pci_driver DAC960_pci_driver = {
7161         .name           = "DAC960",
7162         .id_table       = DAC960_id_table,
7163         .probe          = DAC960_Probe,
7164         .remove         = DAC960_Remove,
7165 };
7166
7167 static int DAC960_init_module(void)
7168 {
7169         int ret;
7170
7171         ret =  pci_register_driver(&DAC960_pci_driver);
7172 #ifdef DAC960_GAM_MINOR
7173         if (!ret)
7174                 DAC960_gam_init();
7175 #endif
7176         return ret;
7177 }
7178
7179 static void DAC960_cleanup_module(void)
7180 {
7181         int i;
7182
7183 #ifdef DAC960_GAM_MINOR
7184         DAC960_gam_cleanup();
7185 #endif
7186
7187         for (i = 0; i < DAC960_ControllerCount; i++) {
7188                 DAC960_Controller_T *Controller = DAC960_Controllers[i];
7189                 if (Controller == NULL)
7190                         continue;
7191                 DAC960_FinalizeController(Controller);
7192         }
7193         if (DAC960_ProcDirectoryEntry != NULL) {
7194                 remove_proc_entry("rd/status", NULL);
7195                 remove_proc_entry("rd", NULL);
7196         }
7197         DAC960_ControllerCount = 0;
7198         pci_unregister_driver(&DAC960_pci_driver);
7199 }
7200
7201 module_init(DAC960_init_module);
7202 module_exit(DAC960_cleanup_module);
7203
7204 MODULE_LICENSE("GPL");