drivers/block/DAC960.c

   1 /*
   2
   3   Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers
   4
   5   Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com>
   6   Portions Copyright 2002 by Mylex (An IBM Business Unit)
   7
   8   This program is free software; you may redistribute and/or modify it under
   9   the terms of the GNU General Public License Version 2 as published by the
  10   Free Software Foundation.
  11
  12   This program is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
  14   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15   for complete details.
  16
  17 */
  18
  19
  20 #define DAC960_DriverVersion                    "2.5.49"
  21 #define DAC960_DriverDate                       "21 Aug 2007"
  22
  23
  24 #include <linux/module.h>
  25 #include <linux/types.h>
  26 #include <linux/miscdevice.h>
  27 #include <linux/blkdev.h>
  28 #include <linux/bio.h>
  29 #include <linux/completion.h>
  30 #include <linux/delay.h>
  31 #include <linux/genhd.h>
  32 #include <linux/hdreg.h>
  33 #include <linux/blkpg.h>
  34 #include <linux/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, DMA_32BIT_MASK))
1169         return DAC960_Failure(Controller, "DMA mask out of range");
1170   Controller->BounceBufferLimit = DMA_32BIT_MASK;
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, DMA_64BIT_MASK))
1372                 Controller->BounceBufferLimit = DMA_64BIT_MASK;
1373         else if (!pci_set_dma_mask(Controller->PCIDevice, DMA_32BIT_MASK))
1374                 Controller->BounceBufferLimit = DMA_32BIT_MASK;
1375         else
1376                 return DAC960_Failure(Controller, "DMA mask out of range");
1377
1378   /* This is a temporary dma mapping, used only in the scope of this function */
1379   CommandMailbox = pci_alloc_consistent(PCI_Device,
1380                 sizeof(DAC960_V2_CommandMailbox_T), &CommandMailboxDMA);
1381   if (CommandMailbox == NULL)
1382           return false;
1383
1384   CommandMailboxesSize = DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T);
1385   StatusMailboxesSize = DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T);
1386   DmaPagesSize =
1387     CommandMailboxesSize + StatusMailboxesSize +
1388     sizeof(DAC960_V2_HealthStatusBuffer_T) +
1389     sizeof(DAC960_V2_ControllerInfo_T) +
1390     sizeof(DAC960_V2_LogicalDeviceInfo_T) +
1391     sizeof(DAC960_V2_PhysicalDeviceInfo_T) +
1392     sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T) +
1393     sizeof(DAC960_V2_Event_T) +
1394     sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
1395
1396   if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize)) {
1397         pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
1398                                         CommandMailbox, CommandMailboxDMA);
1399         return false;
1400   }
1401
1402   CommandMailboxesMemory = slice_dma_loaf(DmaPages,
1403                 CommandMailboxesSize, &CommandMailboxesMemoryDMA);
1404
1405   /* These are the base addresses for the command memory mailbox array */
1406   Controller->V2.FirstCommandMailbox = CommandMailboxesMemory;
1407   Controller->V2.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
1408
1409   CommandMailboxesMemory += DAC960_V2_CommandMailboxCount - 1;
1410   Controller->V2.LastCommandMailbox = CommandMailboxesMemory;
1411   Controller->V2.NextCommandMailbox = Controller->V2.FirstCommandMailbox;
1412   Controller->V2.PreviousCommandMailbox1 = Controller->V2.LastCommandMailbox;
1413   Controller->V2.PreviousCommandMailbox2 =
1414                                         Controller->V2.LastCommandMailbox - 1;
1415
1416   /* These are the base addresses for the status memory mailbox array */
1417   StatusMailboxesMemory = slice_dma_loaf(DmaPages,
1418                 StatusMailboxesSize, &StatusMailboxesMemoryDMA);
1419
1420   Controller->V2.FirstStatusMailbox = StatusMailboxesMemory;
1421   Controller->V2.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
1422   StatusMailboxesMemory += DAC960_V2_StatusMailboxCount - 1;
1423   Controller->V2.LastStatusMailbox = StatusMailboxesMemory;
1424   Controller->V2.NextStatusMailbox = Controller->V2.FirstStatusMailbox;
1425
1426   Controller->V2.HealthStatusBuffer = slice_dma_loaf(DmaPages,
1427                 sizeof(DAC960_V2_HealthStatusBuffer_T),
1428                 &Controller->V2.HealthStatusBufferDMA);
1429
1430   Controller->V2.NewControllerInformation = slice_dma_loaf(DmaPages,
1431                 sizeof(DAC960_V2_ControllerInfo_T),
1432                 &Controller->V2.NewControllerInformationDMA);
1433
1434   Controller->V2.NewLogicalDeviceInformation =  slice_dma_loaf(DmaPages,
1435                 sizeof(DAC960_V2_LogicalDeviceInfo_T),
1436                 &Controller->V2.NewLogicalDeviceInformationDMA);
1437
1438   Controller->V2.NewPhysicalDeviceInformation = slice_dma_loaf(DmaPages,
1439                 sizeof(DAC960_V2_PhysicalDeviceInfo_T),
1440                 &Controller->V2.NewPhysicalDeviceInformationDMA);
1441
1442   Controller->V2.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
1443                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1444                 &Controller->V2.NewInquiryUnitSerialNumberDMA);
1445
1446   Controller->V2.Event = slice_dma_loaf(DmaPages,
1447                 sizeof(DAC960_V2_Event_T),
1448                 &Controller->V2.EventDMA);
1449
1450   Controller->V2.PhysicalToLogicalDevice = slice_dma_loaf(DmaPages,
1451                 sizeof(DAC960_V2_PhysicalToLogicalDevice_T),
1452                 &Controller->V2.PhysicalToLogicalDeviceDMA);
1453
1454   /*
1455     Enable the Memory Mailbox Interface.
1456
1457     I don't know why we can't just use one of the memory mailboxes
1458     we just allocated to do this, instead of using this temporary one.
1459     Try this change later.
1460   */
1461   memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
1462   CommandMailbox->SetMemoryMailbox.CommandIdentifier = 1;
1463   CommandMailbox->SetMemoryMailbox.CommandOpcode = DAC960_V2_IOCTL;
1464   CommandMailbox->SetMemoryMailbox.CommandControlBits.NoAutoRequestSense = true;
1465   CommandMailbox->SetMemoryMailbox.FirstCommandMailboxSizeKB =
1466     (DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T)) >> 10;
1467   CommandMailbox->SetMemoryMailbox.FirstStatusMailboxSizeKB =
1468     (DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T)) >> 10;
1469   CommandMailbox->SetMemoryMailbox.SecondCommandMailboxSizeKB = 0;
1470   CommandMailbox->SetMemoryMailbox.SecondStatusMailboxSizeKB = 0;
1471   CommandMailbox->SetMemoryMailbox.RequestSenseSize = 0;
1472   CommandMailbox->SetMemoryMailbox.IOCTL_Opcode = DAC960_V2_SetMemoryMailbox;
1473   CommandMailbox->SetMemoryMailbox.HealthStatusBufferSizeKB = 1;
1474   CommandMailbox->SetMemoryMailbox.HealthStatusBufferBusAddress =
1475                                         Controller->V2.HealthStatusBufferDMA;
1476   CommandMailbox->SetMemoryMailbox.FirstCommandMailboxBusAddress =
1477                                         Controller->V2.FirstCommandMailboxDMA;
1478   CommandMailbox->SetMemoryMailbox.FirstStatusMailboxBusAddress =
1479                                         Controller->V2.FirstStatusMailboxDMA;
1480   switch (Controller->HardwareType)
1481     {
1482     case DAC960_GEM_Controller:
1483       while (DAC960_GEM_HardwareMailboxFullP(ControllerBaseAddress))
1484         udelay(1);
1485       DAC960_GEM_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1486       DAC960_GEM_HardwareMailboxNewCommand(ControllerBaseAddress);
1487       while (!DAC960_GEM_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1488         udelay(1);
1489       CommandStatus = DAC960_GEM_ReadCommandStatus(ControllerBaseAddress);
1490       DAC960_GEM_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1491       DAC960_GEM_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1492       break;
1493     case DAC960_BA_Controller:
1494       while (DAC960_BA_HardwareMailboxFullP(ControllerBaseAddress))
1495         udelay(1);
1496       DAC960_BA_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1497       DAC960_BA_HardwareMailboxNewCommand(ControllerBaseAddress);
1498       while (!DAC960_BA_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1499         udelay(1);
1500       CommandStatus = DAC960_BA_ReadCommandStatus(ControllerBaseAddress);
1501       DAC960_BA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1502       DAC960_BA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1503       break;
1504     case DAC960_LP_Controller:
1505       while (DAC960_LP_HardwareMailboxFullP(ControllerBaseAddress))
1506         udelay(1);
1507       DAC960_LP_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1508       DAC960_LP_HardwareMailboxNewCommand(ControllerBaseAddress);
1509       while (!DAC960_LP_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1510         udelay(1);
1511       CommandStatus = DAC960_LP_ReadCommandStatus(ControllerBaseAddress);
1512       DAC960_LP_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1513       DAC960_LP_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1514       break;
1515     default:
1516       DAC960_Failure(Controller, "Unknown Controller Type\n");
1517       CommandStatus = DAC960_V2_AbormalCompletion;
1518       break;
1519     }
1520   pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
1521                                         CommandMailbox, CommandMailboxDMA);
1522   return (CommandStatus == DAC960_V2_NormalCompletion);
1523 }
1524
1525
1526 /*
1527   DAC960_V1_ReadControllerConfiguration reads the Configuration Information
1528   from DAC960 V1 Firmware Controllers and initializes the Controller structure.
1529 */
1530
1531 static bool DAC960_V1_ReadControllerConfiguration(DAC960_Controller_T
1532                                                      *Controller)
1533 {
1534   DAC960_V1_Enquiry2_T *Enquiry2;
1535   dma_addr_t Enquiry2DMA;
1536   DAC960_V1_Config2_T *Config2;
1537   dma_addr_t Config2DMA;
1538   int LogicalDriveNumber, Channel, TargetID;
1539   struct dma_loaf local_dma;
1540
1541   if (!init_dma_loaf(Controller->PCIDevice, &local_dma,
1542                 sizeof(DAC960_V1_Enquiry2_T) + sizeof(DAC960_V1_Config2_T)))
1543         return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
1544
1545   Enquiry2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Enquiry2_T), &Enquiry2DMA);
1546   Config2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Config2_T), &Config2DMA);
1547
1548   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry,
1549                               Controller->V1.NewEnquiryDMA)) {
1550     free_dma_loaf(Controller->PCIDevice, &local_dma);
1551     return DAC960_Failure(Controller, "ENQUIRY");
1552   }
1553   memcpy(&Controller->V1.Enquiry, Controller->V1.NewEnquiry,
1554                                                 sizeof(DAC960_V1_Enquiry_T));
1555
1556   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry2, Enquiry2DMA)) {
1557     free_dma_loaf(Controller->PCIDevice, &local_dma);
1558     return DAC960_Failure(Controller, "ENQUIRY2");
1559   }
1560
1561   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_ReadConfig2, Config2DMA)) {
1562     free_dma_loaf(Controller->PCIDevice, &local_dma);
1563     return DAC960_Failure(Controller, "READ CONFIG2");
1564   }
1565
1566   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_GetLogicalDriveInformation,
1567                               Controller->V1.NewLogicalDriveInformationDMA)) {
1568     free_dma_loaf(Controller->PCIDevice, &local_dma);
1569     return DAC960_Failure(Controller, "GET LOGICAL DRIVE INFORMATION");
1570   }
1571   memcpy(&Controller->V1.LogicalDriveInformation,
1572                 Controller->V1.NewLogicalDriveInformation,
1573                 sizeof(DAC960_V1_LogicalDriveInformationArray_T));
1574
1575   for (Channel = 0; Channel < Enquiry2->ActualChannels; Channel++)
1576     for (TargetID = 0; TargetID < Enquiry2->MaxTargets; TargetID++) {
1577       if (!DAC960_V1_ExecuteType3D(Controller, DAC960_V1_GetDeviceState,
1578                                    Channel, TargetID,
1579                                    Controller->V1.NewDeviceStateDMA)) {
1580                 free_dma_loaf(Controller->PCIDevice, &local_dma);
1581                 return DAC960_Failure(Controller, "GET DEVICE STATE");
1582         }
1583         memcpy(&Controller->V1.DeviceState[Channel][TargetID],
1584                 Controller->V1.NewDeviceState, sizeof(DAC960_V1_DeviceState_T));
1585      }
1586   /*
1587     Initialize the Controller Model Name and Full Model Name fields.
1588   */
1589   switch (Enquiry2->HardwareID.SubModel)
1590     {
1591     case DAC960_V1_P_PD_PU:
1592       if (Enquiry2->SCSICapability.BusSpeed == DAC960_V1_Ultra)
1593         strcpy(Controller->ModelName, "DAC960PU");
1594       else strcpy(Controller->ModelName, "DAC960PD");
1595       break;
1596     case DAC960_V1_PL:
1597       strcpy(Controller->ModelName, "DAC960PL");
1598       break;
1599     case DAC960_V1_PG:
1600       strcpy(Controller->ModelName, "DAC960PG");
1601       break;
1602     case DAC960_V1_PJ:
1603       strcpy(Controller->ModelName, "DAC960PJ");
1604       break;
1605     case DAC960_V1_PR:
1606       strcpy(Controller->ModelName, "DAC960PR");
1607       break;
1608     case DAC960_V1_PT:
1609       strcpy(Controller->ModelName, "DAC960PT");
1610       break;
1611     case DAC960_V1_PTL0:
1612       strcpy(Controller->ModelName, "DAC960PTL0");
1613       break;
1614     case DAC960_V1_PRL:
1615       strcpy(Controller->ModelName, "DAC960PRL");
1616       break;
1617     case DAC960_V1_PTL1:
1618       strcpy(Controller->ModelName, "DAC960PTL1");
1619       break;
1620     case DAC960_V1_1164P:
1621       strcpy(Controller->ModelName, "DAC1164P");
1622       break;
1623     default:
1624       free_dma_loaf(Controller->PCIDevice, &local_dma);
1625       return DAC960_Failure(Controller, "MODEL VERIFICATION");
1626     }
1627   strcpy(Controller->FullModelName, "Mylex ");
1628   strcat(Controller->FullModelName, Controller->ModelName);
1629   /*
1630     Initialize the Controller Firmware Version field and verify that it
1631     is a supported firmware version.  The supported firmware versions are:
1632
1633     DAC1164P                5.06 and above
1634     DAC960PTL/PRL/PJ/PG     4.06 and above
1635     DAC960PU/PD/PL          3.51 and above
1636     DAC960PU/PD/PL/P        2.73 and above
1637   */
1638 #if defined(CONFIG_ALPHA)
1639   /*
1640     DEC Alpha machines were often equipped with DAC960 cards that were
1641     OEMed from Mylex, and had their own custom firmware. Version 2.70,
1642     the last custom FW revision to be released by DEC for these older
1643     controllers, appears to work quite well with this driver.
1644
1645     Cards tested successfully were several versions each of the PD and
1646     PU, called by DEC the KZPSC and KZPAC, respectively, and having
1647     the Manufacturer Numbers (from Mylex), usually on a sticker on the
1648     back of the board, of:
1649
1650     KZPSC:  D040347 (1-channel) or D040348 (2-channel) or D040349 (3-channel)
1651     KZPAC:  D040395 (1-channel) or D040396 (2-channel) or D040397 (3-channel)
1652   */
1653 # define FIRMWARE_27X   "2.70"
1654 #else
1655 # define FIRMWARE_27X   "2.73"
1656 #endif
1657
1658   if (Enquiry2->FirmwareID.MajorVersion == 0)
1659     {
1660       Enquiry2->FirmwareID.MajorVersion =
1661         Controller->V1.Enquiry.MajorFirmwareVersion;
1662       Enquiry2->FirmwareID.MinorVersion =
1663         Controller->V1.Enquiry.MinorFirmwareVersion;
1664       Enquiry2->FirmwareID.FirmwareType = '0';
1665       Enquiry2->FirmwareID.TurnID = 0;
1666     }
1667   sprintf(Controller->FirmwareVersion, "%d.%02d-%c-%02d",
1668           Enquiry2->FirmwareID.MajorVersion, Enquiry2->FirmwareID.MinorVersion,
1669           Enquiry2->FirmwareID.FirmwareType, Enquiry2->FirmwareID.TurnID);
1670   if (!((Controller->FirmwareVersion[0] == '5' &&
1671          strcmp(Controller->FirmwareVersion, "5.06") >= 0) ||
1672         (Controller->FirmwareVersion[0] == '4' &&
1673          strcmp(Controller->FirmwareVersion, "4.06") >= 0) ||
1674         (Controller->FirmwareVersion[0] == '3' &&
1675          strcmp(Controller->FirmwareVersion, "3.51") >= 0) ||
1676         (Controller->FirmwareVersion[0] == '2' &&
1677          strcmp(Controller->FirmwareVersion, FIRMWARE_27X) >= 0)))
1678     {
1679       DAC960_Failure(Controller, "FIRMWARE VERSION VERIFICATION");
1680       DAC960_Error("Firmware Version = '%s'\n", Controller,
1681                    Controller->FirmwareVersion);
1682       free_dma_loaf(Controller->PCIDevice, &local_dma);
1683       return false;
1684     }
1685   /*
1686     Initialize the Controller Channels, Targets, Memory Size, and SAF-TE
1687     Enclosure Management Enabled fields.
1688   */
1689   Controller->Channels = Enquiry2->ActualChannels;
1690   Controller->Targets = Enquiry2->MaxTargets;
1691   Controller->MemorySize = Enquiry2->MemorySize >> 20;
1692   Controller->V1.SAFTE_EnclosureManagementEnabled =
1693     (Enquiry2->FaultManagementType == DAC960_V1_SAFTE);
1694   /*
1695     Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
1696     Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
1697     Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
1698     less than the Controller Queue Depth to allow for an automatic drive
1699     rebuild operation.
1700   */
1701   Controller->ControllerQueueDepth = Controller->V1.Enquiry.MaxCommands;
1702   Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
1703   if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
1704     Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
1705   Controller->LogicalDriveCount =
1706     Controller->V1.Enquiry.NumberOfLogicalDrives;
1707   Controller->MaxBlocksPerCommand = Enquiry2->MaxBlocksPerCommand;
1708   Controller->ControllerScatterGatherLimit = Enquiry2->MaxScatterGatherEntries;
1709   Controller->DriverScatterGatherLimit =
1710     Controller->ControllerScatterGatherLimit;
1711   if (Controller->DriverScatterGatherLimit > DAC960_V1_ScatterGatherLimit)
1712     Controller->DriverScatterGatherLimit = DAC960_V1_ScatterGatherLimit;
1713   /*
1714     Initialize the Stripe Size, Segment Size, and Geometry Translation.
1715   */
1716   Controller->V1.StripeSize = Config2->BlocksPerStripe * Config2->BlockFactor
1717                               >> (10 - DAC960_BlockSizeBits);
1718   Controller->V1.SegmentSize = Config2->BlocksPerCacheLine * Config2->BlockFactor
1719                                >> (10 - DAC960_BlockSizeBits);
1720   switch (Config2->DriveGeometry)
1721     {
1722     case DAC960_V1_Geometry_128_32:
1723       Controller->V1.GeometryTranslationHeads = 128;
1724       Controller->V1.GeometryTranslationSectors = 32;
1725       break;
1726     case DAC960_V1_Geometry_255_63:
1727       Controller->V1.GeometryTranslationHeads = 255;
1728       Controller->V1.GeometryTranslationSectors = 63;
1729       break;
1730     default:
1731       free_dma_loaf(Controller->PCIDevice, &local_dma);
1732       return DAC960_Failure(Controller, "CONFIG2 DRIVE GEOMETRY");
1733     }
1734   /*
1735     Initialize the Background Initialization Status.
1736   */
1737   if ((Controller->FirmwareVersion[0] == '4' &&
1738       strcmp(Controller->FirmwareVersion, "4.08") >= 0) ||
1739       (Controller->FirmwareVersion[0] == '5' &&
1740        strcmp(Controller->FirmwareVersion, "5.08") >= 0))
1741     {
1742       Controller->V1.BackgroundInitializationStatusSupported = true;
1743       DAC960_V1_ExecuteType3B(Controller,
1744                               DAC960_V1_BackgroundInitializationControl, 0x20,
1745                               Controller->
1746                                V1.BackgroundInitializationStatusDMA);
1747       memcpy(&Controller->V1.LastBackgroundInitializationStatus,
1748                 Controller->V1.BackgroundInitializationStatus,
1749                 sizeof(DAC960_V1_BackgroundInitializationStatus_T));
1750     }
1751   /*
1752     Initialize the Logical Drive Initially Accessible flag.
1753   */
1754   for (LogicalDriveNumber = 0;
1755        LogicalDriveNumber < Controller->LogicalDriveCount;
1756        LogicalDriveNumber++)
1757     if (Controller->V1.LogicalDriveInformation
1758                        [LogicalDriveNumber].LogicalDriveState !=
1759         DAC960_V1_LogicalDrive_Offline)
1760       Controller->LogicalDriveInitiallyAccessible[LogicalDriveNumber] = true;
1761   Controller->V1.LastRebuildStatus = DAC960_V1_NoRebuildOrCheckInProgress;
1762   free_dma_loaf(Controller->PCIDevice, &local_dma);
1763   return true;
1764 }
1765
1766
1767 /*
1768   DAC960_V2_ReadControllerConfiguration reads the Configuration Information
1769   from DAC960 V2 Firmware Controllers and initializes the Controller structure.
1770 */
1771
1772 static bool DAC960_V2_ReadControllerConfiguration(DAC960_Controller_T
1773                                                      *Controller)
1774 {
1775   DAC960_V2_ControllerInfo_T *ControllerInfo =
1776                 &Controller->V2.ControllerInformation;
1777   unsigned short LogicalDeviceNumber = 0;
1778   int ModelNameLength;
1779
1780   /* Get data into dma-able area, then copy into permanant location */
1781   if (!DAC960_V2_NewControllerInfo(Controller))
1782     return DAC960_Failure(Controller, "GET CONTROLLER INFO");
1783   memcpy(ControllerInfo, Controller->V2.NewControllerInformation,
1784                         sizeof(DAC960_V2_ControllerInfo_T));
1785
1786
1787   if (!DAC960_V2_GeneralInfo(Controller))
1788     return DAC960_Failure(Controller, "GET HEALTH STATUS");
1789
1790   /*
1791     Initialize the Controller Model Name and Full Model Name fields.
1792   */
1793   ModelNameLength = sizeof(ControllerInfo->ControllerName);
1794   if (ModelNameLength > sizeof(Controller->ModelName)-1)
1795     ModelNameLength = sizeof(Controller->ModelName)-1;
1796   memcpy(Controller->ModelName, ControllerInfo->ControllerName,
1797          ModelNameLength);
1798   ModelNameLength--;
1799   while (Controller->ModelName[ModelNameLength] == ' ' ||
1800          Controller->ModelName[ModelNameLength] == '\0')
1801     ModelNameLength--;
1802   Controller->ModelName[++ModelNameLength] = '\0';
1803   strcpy(Controller->FullModelName, "Mylex ");
1804   strcat(Controller->FullModelName, Controller->ModelName);
1805   /*
1806     Initialize the Controller Firmware Version field.
1807   */
1808   sprintf(Controller->FirmwareVersion, "%d.%02d-%02d",
1809           ControllerInfo->FirmwareMajorVersion,
1810           ControllerInfo->FirmwareMinorVersion,
1811           ControllerInfo->FirmwareTurnNumber);
1812   if (ControllerInfo->FirmwareMajorVersion == 6 &&
1813       ControllerInfo->FirmwareMinorVersion == 0 &&
1814       ControllerInfo->FirmwareTurnNumber < 1)
1815     {
1816       DAC960_Info("FIRMWARE VERSION %s DOES NOT PROVIDE THE CONTROLLER\n",
1817                   Controller, Controller->FirmwareVersion);
1818       DAC960_Info("STATUS MONITORING FUNCTIONALITY NEEDED BY THIS DRIVER.\n",
1819                   Controller);
1820       DAC960_Info("PLEASE UPGRADE TO VERSION 6.00-01 OR ABOVE.\n",
1821                   Controller);
1822     }
1823   /*
1824     Initialize the Controller Channels, Targets, and Memory Size.
1825   */
1826   Controller->Channels = ControllerInfo->NumberOfPhysicalChannelsPresent;
1827   Controller->Targets =
1828     ControllerInfo->MaximumTargetsPerChannel
1829                     [ControllerInfo->NumberOfPhysicalChannelsPresent-1];
1830   Controller->MemorySize = ControllerInfo->MemorySizeMB;
1831   /*
1832     Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
1833     Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
1834     Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
1835     less than the Controller Queue Depth to allow for an automatic drive
1836     rebuild operation.
1837   */
1838   Controller->ControllerQueueDepth = ControllerInfo->MaximumParallelCommands;
1839   Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
1840   if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
1841     Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
1842   Controller->LogicalDriveCount = ControllerInfo->LogicalDevicesPresent;
1843   Controller->MaxBlocksPerCommand =
1844     ControllerInfo->MaximumDataTransferSizeInBlocks;
1845   Controller->ControllerScatterGatherLimit =
1846     ControllerInfo->MaximumScatterGatherEntries;
1847   Controller->DriverScatterGatherLimit =
1848     Controller->ControllerScatterGatherLimit;
1849   if (Controller->DriverScatterGatherLimit > DAC960_V2_ScatterGatherLimit)
1850     Controller->DriverScatterGatherLimit = DAC960_V2_ScatterGatherLimit;
1851   /*
1852     Initialize the Logical Device Information.
1853   */
1854   while (true)
1855     {
1856       DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
1857         Controller->V2.NewLogicalDeviceInformation;
1858       DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo;
1859       DAC960_V2_PhysicalDevice_T PhysicalDevice;
1860
1861       if (!DAC960_V2_NewLogicalDeviceInfo(Controller, LogicalDeviceNumber))
1862         break;
1863       LogicalDeviceNumber = NewLogicalDeviceInfo->LogicalDeviceNumber;
1864       if (LogicalDeviceNumber >= DAC960_MaxLogicalDrives) {
1865         DAC960_Error("DAC960: Logical Drive Number %d not supported\n",
1866                        Controller, LogicalDeviceNumber);
1867                 break;
1868       }
1869       if (NewLogicalDeviceInfo->DeviceBlockSizeInBytes != DAC960_BlockSize) {
1870         DAC960_Error("DAC960: Logical Drive Block Size %d not supported\n",
1871               Controller, NewLogicalDeviceInfo->DeviceBlockSizeInBytes);
1872         LogicalDeviceNumber++;
1873         continue;
1874       }
1875       PhysicalDevice.Controller = 0;
1876       PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
1877       PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
1878       PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
1879       Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
1880         PhysicalDevice;
1881       if (NewLogicalDeviceInfo->LogicalDeviceState !=
1882           DAC960_V2_LogicalDevice_Offline)
1883         Controller->LogicalDriveInitiallyAccessible[LogicalDeviceNumber] = true;
1884       LogicalDeviceInfo = kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T),
1885                                    GFP_ATOMIC);
1886       if (LogicalDeviceInfo == NULL)
1887         return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
1888       Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
1889         LogicalDeviceInfo;
1890       memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
1891              sizeof(DAC960_V2_LogicalDeviceInfo_T));
1892       LogicalDeviceNumber++;
1893     }
1894   return true;
1895 }
1896
1897
1898 /*
1899   DAC960_ReportControllerConfiguration reports the Configuration Information
1900   for Controller.
1901 */
1902
1903 static bool DAC960_ReportControllerConfiguration(DAC960_Controller_T
1904                                                     *Controller)
1905 {
1906   DAC960_Info("Configuring Mylex %s PCI RAID Controller\n",
1907               Controller, Controller->ModelName);
1908   DAC960_Info("  Firmware Version: %s, Channels: %d, Memory Size: %dMB\n",
1909               Controller, Controller->FirmwareVersion,
1910               Controller->Channels, Controller->MemorySize);
1911   DAC960_Info("  PCI Bus: %d, Device: %d, Function: %d, I/O Address: ",
1912               Controller, Controller->Bus,
1913               Controller->Device, Controller->Function);
1914   if (Controller->IO_Address == 0)
1915     DAC960_Info("Unassigned\n", Controller);
1916   else DAC960_Info("0x%X\n", Controller, Controller->IO_Address);
1917   DAC960_Info("  PCI Address: 0x%X mapped at 0x%lX, IRQ Channel: %d\n",
1918               Controller, Controller->PCI_Address,
1919               (unsigned long) Controller->BaseAddress,
1920               Controller->IRQ_Channel);
1921   DAC960_Info("  Controller Queue Depth: %d, "
1922               "Maximum Blocks per Command: %d\n",
1923               Controller, Controller->ControllerQueueDepth,
1924               Controller->MaxBlocksPerCommand);
1925   DAC960_Info("  Driver Queue Depth: %d, "
1926               "Scatter/Gather Limit: %d of %d Segments\n",
1927               Controller, Controller->DriverQueueDepth,
1928               Controller->DriverScatterGatherLimit,
1929               Controller->ControllerScatterGatherLimit);
1930   if (Controller->FirmwareType == DAC960_V1_Controller)
1931     {
1932       DAC960_Info("  Stripe Size: %dKB, Segment Size: %dKB, "
1933                   "BIOS Geometry: %d/%d\n", Controller,
1934                   Controller->V1.StripeSize,
1935                   Controller->V1.SegmentSize,
1936                   Controller->V1.GeometryTranslationHeads,
1937                   Controller->V1.GeometryTranslationSectors);
1938       if (Controller->V1.SAFTE_EnclosureManagementEnabled)
1939         DAC960_Info("  SAF-TE Enclosure Management Enabled\n", Controller);
1940     }
1941   return true;
1942 }
1943
1944
1945 /*
1946   DAC960_V1_ReadDeviceConfiguration reads the Device Configuration Information
1947   for DAC960 V1 Firmware Controllers by requesting the SCSI Inquiry and SCSI
1948   Inquiry Unit Serial Number information for each device connected to
1949   Controller.
1950 */
1951
1952 static bool DAC960_V1_ReadDeviceConfiguration(DAC960_Controller_T
1953                                                  *Controller)
1954 {
1955   struct dma_loaf local_dma;
1956
1957   dma_addr_t DCDBs_dma[DAC960_V1_MaxChannels];
1958   DAC960_V1_DCDB_T *DCDBs_cpu[DAC960_V1_MaxChannels];
1959
1960   dma_addr_t SCSI_Inquiry_dma[DAC960_V1_MaxChannels];
1961   DAC960_SCSI_Inquiry_T *SCSI_Inquiry_cpu[DAC960_V1_MaxChannels];
1962
1963   dma_addr_t SCSI_NewInquiryUnitSerialNumberDMA[DAC960_V1_MaxChannels];
1964   DAC960_SCSI_Inquiry_UnitSerialNumber_T *SCSI_NewInquiryUnitSerialNumberCPU[DAC960_V1_MaxChannels];
1965
1966   struct completion Completions[DAC960_V1_MaxChannels];
1967   unsigned long flags;
1968   int Channel, TargetID;
1969
1970   if (!init_dma_loaf(Controller->PCIDevice, &local_dma,
1971                 DAC960_V1_MaxChannels*(sizeof(DAC960_V1_DCDB_T) +
1972                         sizeof(DAC960_SCSI_Inquiry_T) +
1973                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T))))
1974      return DAC960_Failure(Controller,
1975                         "DMA ALLOCATION FAILED IN ReadDeviceConfiguration");
1976
1977   for (Channel = 0; Channel < Controller->Channels; Channel++) {
1978         DCDBs_cpu[Channel] = slice_dma_loaf(&local_dma,
1979                         sizeof(DAC960_V1_DCDB_T), DCDBs_dma + Channel);
1980         SCSI_Inquiry_cpu[Channel] = slice_dma_loaf(&local_dma,
1981                         sizeof(DAC960_SCSI_Inquiry_T),
1982                         SCSI_Inquiry_dma + Channel);
1983         SCSI_NewInquiryUnitSerialNumberCPU[Channel] = slice_dma_loaf(&local_dma,
1984                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1985                         SCSI_NewInquiryUnitSerialNumberDMA + Channel);
1986   }
1987
1988   for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
1989     {
1990       /*
1991        * For each channel, submit a probe for a device on that channel.
1992        * The timeout interval for a device that is present is 10 seconds.
1993        * With this approach, the timeout periods can elapse in parallel
1994        * on each channel.
1995        */
1996       for (Channel = 0; Channel < Controller->Channels; Channel++)
1997         {
1998           dma_addr_t NewInquiryStandardDataDMA = SCSI_Inquiry_dma[Channel];
1999           DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
2000           dma_addr_t DCDB_dma = DCDBs_dma[Channel];
2001           DAC960_Command_T *Command = Controller->Commands[Channel];
2002           struct completion *Completion = &Completions[Channel];
2003
2004           init_completion(Completion);
2005           DAC960_V1_ClearCommand(Command);
2006           Command->CommandType = DAC960_ImmediateCommand;
2007           Command->Completion = Completion;
2008           Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
2009           Command->V1.CommandMailbox.Type3.BusAddress = DCDB_dma;
2010           DCDB->Channel = Channel;
2011           DCDB->TargetID = TargetID;
2012           DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
2013           DCDB->EarlyStatus = false;
2014           DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
2015           DCDB->NoAutomaticRequestSense = false;
2016           DCDB->DisconnectPermitted = true;
2017           DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
2018           DCDB->BusAddress = NewInquiryStandardDataDMA;
2019           DCDB->CDBLength = 6;
2020           DCDB->TransferLengthHigh4 = 0;
2021           DCDB->SenseLength = sizeof(DCDB->SenseData);
2022           DCDB->CDB[0] = 0x12; /* INQUIRY */
2023           DCDB->CDB[1] = 0; /* EVPD = 0 */
2024           DCDB->CDB[2] = 0; /* Page Code */
2025           DCDB->CDB[3] = 0; /* Reserved */
2026           DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
2027           DCDB->CDB[5] = 0; /* Control */
2028
2029           spin_lock_irqsave(&Controller->queue_lock, flags);
2030           DAC960_QueueCommand(Command);
2031           spin_unlock_irqrestore(&Controller->queue_lock, flags);
2032         }
2033       /*
2034        * Wait for the problems submitted in the previous loop
2035        * to complete.  On the probes that are successful,
2036        * get the serial number of the device that was found.
2037        */
2038       for (Channel = 0; Channel < Controller->Channels; Channel++)
2039         {
2040           DAC960_SCSI_Inquiry_T *InquiryStandardData =
2041             &Controller->V1.InquiryStandardData[Channel][TargetID];
2042           DAC960_SCSI_Inquiry_T *NewInquiryStandardData = SCSI_Inquiry_cpu[Channel];
2043           dma_addr_t NewInquiryUnitSerialNumberDMA =
2044                         SCSI_NewInquiryUnitSerialNumberDMA[Channel];
2045           DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
2046                         SCSI_NewInquiryUnitSerialNumberCPU[Channel];
2047           DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2048             &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
2049           DAC960_Command_T *Command = Controller->Commands[Channel];
2050           DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
2051           struct completion *Completion = &Completions[Channel];
2052
2053           wait_for_completion(Completion);
2054
2055           if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
2056             memset(InquiryStandardData, 0, sizeof(DAC960_SCSI_Inquiry_T));
2057             InquiryStandardData->PeripheralDeviceType = 0x1F;
2058             continue;
2059           } else
2060             memcpy(InquiryStandardData, NewInquiryStandardData, sizeof(DAC960_SCSI_Inquiry_T));
2061
2062           /* Preserve Channel and TargetID values from the previous loop */
2063           Command->Completion = Completion;
2064           DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
2065           DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
2066           DCDB->SenseLength = sizeof(DCDB->SenseData);
2067           DCDB->CDB[0] = 0x12; /* INQUIRY */
2068           DCDB->CDB[1] = 1; /* EVPD = 1 */
2069           DCDB->CDB[2] = 0x80; /* Page Code */
2070           DCDB->CDB[3] = 0; /* Reserved */
2071           DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
2072           DCDB->CDB[5] = 0; /* Control */
2073
2074           spin_lock_irqsave(&Controller->queue_lock, flags);
2075           DAC960_QueueCommand(Command);
2076           spin_unlock_irqrestore(&Controller->queue_lock, flags);
2077           wait_for_completion(Completion);
2078
2079           if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
2080                 memset(InquiryUnitSerialNumber, 0,
2081                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2082                 InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
2083           } else
2084                 memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
2085                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2086         }
2087     }
2088     free_dma_loaf(Controller->PCIDevice, &local_dma);
2089   return true;
2090 }
2091
2092
2093 /*
2094   DAC960_V2_ReadDeviceConfiguration reads the Device Configuration Information
2095   for DAC960 V2 Firmware Controllers by requesting the Physical Device
2096   Information and SCSI Inquiry Unit Serial Number information for each
2097   device connected to Controller.
2098 */
2099
2100 static bool DAC960_V2_ReadDeviceConfiguration(DAC960_Controller_T
2101                                                  *Controller)
2102 {
2103   unsigned char Channel = 0, TargetID = 0, LogicalUnit = 0;
2104   unsigned short PhysicalDeviceIndex = 0;
2105
2106   while (true)
2107     {
2108       DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
2109                 Controller->V2.NewPhysicalDeviceInformation;
2110       DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo;
2111       DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
2112                 Controller->V2.NewInquiryUnitSerialNumber;
2113       DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber;
2114
2115       if (!DAC960_V2_NewPhysicalDeviceInfo(Controller, Channel, TargetID, LogicalUnit))
2116           break;
2117
2118       PhysicalDeviceInfo = kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T),
2119                                     GFP_ATOMIC);
2120       if (PhysicalDeviceInfo == NULL)
2121                 return DAC960_Failure(Controller, "PHYSICAL DEVICE ALLOCATION");
2122       Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex] =
2123                 PhysicalDeviceInfo;
2124       memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
2125                 sizeof(DAC960_V2_PhysicalDeviceInfo_T));
2126
2127       InquiryUnitSerialNumber = kmalloc(
2128               sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T), GFP_ATOMIC);
2129       if (InquiryUnitSerialNumber == NULL) {
2130         kfree(PhysicalDeviceInfo);
2131         return DAC960_Failure(Controller, "SERIAL NUMBER ALLOCATION");
2132       }
2133       Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex] =
2134                 InquiryUnitSerialNumber;
2135
2136       Channel = NewPhysicalDeviceInfo->Channel;
2137       TargetID = NewPhysicalDeviceInfo->TargetID;
2138       LogicalUnit = NewPhysicalDeviceInfo->LogicalUnit;
2139
2140       /*
2141          Some devices do NOT have Unit Serial Numbers.
2142          This command fails for them.  But, we still want to
2143          remember those devices are there.  Construct a
2144          UnitSerialNumber structure for the failure case.
2145       */
2146       if (!DAC960_V2_NewInquiryUnitSerialNumber(Controller, Channel, TargetID, LogicalUnit)) {
2147         memset(InquiryUnitSerialNumber, 0,
2148              sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2149         InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
2150       } else
2151         memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
2152                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2153
2154       PhysicalDeviceIndex++;
2155       LogicalUnit++;
2156     }
2157   return true;
2158 }
2159
2160
2161 /*
2162   DAC960_SanitizeInquiryData sanitizes the Vendor, Model, Revision, and
2163   Product Serial Number fields of the Inquiry Standard Data and Inquiry
2164   Unit Serial Number structures.
2165 */
2166
2167 static void DAC960_SanitizeInquiryData(DAC960_SCSI_Inquiry_T
2168                                          *InquiryStandardData,
2169                                        DAC960_SCSI_Inquiry_UnitSerialNumber_T
2170                                          *InquiryUnitSerialNumber,
2171                                        unsigned char *Vendor,
2172                                        unsigned char *Model,
2173                                        unsigned char *Revision,
2174                                        unsigned char *SerialNumber)
2175 {
2176   int SerialNumberLength, i;
2177   if (InquiryStandardData->PeripheralDeviceType == 0x1F) return;
2178   for (i = 0; i < sizeof(InquiryStandardData->VendorIdentification); i++)
2179     {
2180       unsigned char VendorCharacter =
2181         InquiryStandardData->VendorIdentification[i];
2182       Vendor[i] = (VendorCharacter >= ' ' && VendorCharacter <= '~'
2183                    ? VendorCharacter : ' ');
2184     }
2185   Vendor[sizeof(InquiryStandardData->VendorIdentification)] = '\0';
2186   for (i = 0; i < sizeof(InquiryStandardData->ProductIdentification); i++)
2187     {
2188       unsigned char ModelCharacter =
2189         InquiryStandardData->ProductIdentification[i];
2190       Model[i] = (ModelCharacter >= ' ' && ModelCharacter <= '~'
2191                   ? ModelCharacter : ' ');
2192     }
2193   Model[sizeof(InquiryStandardData->ProductIdentification)] = '\0';
2194   for (i = 0; i < sizeof(InquiryStandardData->ProductRevisionLevel); i++)
2195     {
2196       unsigned char RevisionCharacter =
2197         InquiryStandardData->ProductRevisionLevel[i];
2198       Revision[i] = (RevisionCharacter >= ' ' && RevisionCharacter <= '~'
2199                      ? RevisionCharacter : ' ');
2200     }
2201   Revision[sizeof(InquiryStandardData->ProductRevisionLevel)] = '\0';
2202   if (InquiryUnitSerialNumber->PeripheralDeviceType == 0x1F) return;
2203   SerialNumberLength = InquiryUnitSerialNumber->PageLength;
2204   if (SerialNumberLength >
2205       sizeof(InquiryUnitSerialNumber->ProductSerialNumber))
2206     SerialNumberLength = sizeof(InquiryUnitSerialNumber->ProductSerialNumber);
2207   for (i = 0; i < SerialNumberLength; i++)
2208     {
2209       unsigned char SerialNumberCharacter =
2210         InquiryUnitSerialNumber->ProductSerialNumber[i];
2211       SerialNumber[i] =
2212         (SerialNumberCharacter >= ' ' && SerialNumberCharacter <= '~'
2213          ? SerialNumberCharacter : ' ');
2214     }
2215   SerialNumber[SerialNumberLength] = '\0';
2216 }
2217
2218
2219 /*
2220   DAC960_V1_ReportDeviceConfiguration reports the Device Configuration
2221   Information for DAC960 V1 Firmware Controllers.
2222 */
2223
2224 static bool DAC960_V1_ReportDeviceConfiguration(DAC960_Controller_T
2225                                                    *Controller)
2226 {
2227   int LogicalDriveNumber, Channel, TargetID;
2228   DAC960_Info("  Physical Devices:\n", Controller);
2229   for (Channel = 0; Channel < Controller->Channels; Channel++)
2230     for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
2231       {
2232         DAC960_SCSI_Inquiry_T *InquiryStandardData =
2233           &Controller->V1.InquiryStandardData[Channel][TargetID];
2234         DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2235           &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
2236         DAC960_V1_DeviceState_T *DeviceState =
2237           &Controller->V1.DeviceState[Channel][TargetID];
2238         DAC960_V1_ErrorTableEntry_T *ErrorEntry =
2239           &Controller->V1.ErrorTable.ErrorTableEntries[Channel][TargetID];
2240         char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
2241         char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
2242         char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
2243         char SerialNumber[1+sizeof(InquiryUnitSerialNumber
2244                                    ->ProductSerialNumber)];
2245         if (InquiryStandardData->PeripheralDeviceType == 0x1F) continue;
2246         DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
2247                                    Vendor, Model, Revision, SerialNumber);
2248         DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
2249                     Controller, Channel, TargetID, (TargetID < 10 ? " " : ""),
2250                     Vendor, Model, Revision);
2251         if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
2252           DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
2253         if (DeviceState->Present &&
2254             DeviceState->DeviceType == DAC960_V1_DiskType)
2255           {
2256             if (Controller->V1.DeviceResetCount[Channel][TargetID] > 0)
2257               DAC960_Info("         Disk Status: %s, %u blocks, %d resets\n",
2258                           Controller,
2259                           (DeviceState->DeviceState == DAC960_V1_Device_Dead
2260                            ? "Dead"
2261                            : DeviceState->DeviceState
2262                              == DAC960_V1_Device_WriteOnly
2263                              ? "Write-Only"
2264                              : DeviceState->DeviceState
2265                                == DAC960_V1_Device_Online
2266                                ? "Online" : "Standby"),
2267                           DeviceState->DiskSize,
2268                           Controller->V1.DeviceResetCount[Channel][TargetID]);
2269             else
2270               DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
2271                           (DeviceState->DeviceState == DAC960_V1_Device_Dead
2272                            ? "Dead"
2273                            : DeviceState->DeviceState
2274                              == DAC960_V1_Device_WriteOnly
2275                              ? "Write-Only"
2276                              : DeviceState->DeviceState
2277                                == DAC960_V1_Device_Online
2278                                ? "Online" : "Standby"),
2279                           DeviceState->DiskSize);
2280           }
2281         if (ErrorEntry->ParityErrorCount > 0 ||
2282             ErrorEntry->SoftErrorCount > 0 ||
2283             ErrorEntry->HardErrorCount > 0 ||
2284             ErrorEntry->MiscErrorCount > 0)
2285           DAC960_Info("         Errors - Parity: %d, Soft: %d, "
2286                       "Hard: %d, Misc: %d\n", Controller,
2287                       ErrorEntry->ParityErrorCount,
2288                       ErrorEntry->SoftErrorCount,
2289                       ErrorEntry->HardErrorCount,
2290                       ErrorEntry->MiscErrorCount);
2291       }
2292   DAC960_Info("  Logical Drives:\n", Controller);
2293   for (LogicalDriveNumber = 0;
2294        LogicalDriveNumber < Controller->LogicalDriveCount;
2295        LogicalDriveNumber++)
2296     {
2297       DAC960_V1_LogicalDriveInformation_T *LogicalDriveInformation =
2298         &Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
2299       DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks, %s\n",
2300                   Controller, Controller->ControllerNumber, LogicalDriveNumber,
2301                   LogicalDriveInformation->RAIDLevel,
2302                   (LogicalDriveInformation->LogicalDriveState
2303                    == DAC960_V1_LogicalDrive_Online
2304                    ? "Online"
2305                    : LogicalDriveInformation->LogicalDriveState
2306                      == DAC960_V1_LogicalDrive_Critical
2307                      ? "Critical" : "Offline"),
2308                   LogicalDriveInformation->LogicalDriveSize,
2309                   (LogicalDriveInformation->WriteBack
2310                    ? "Write Back" : "Write Thru"));
2311     }
2312   return true;
2313 }
2314
2315
2316 /*
2317   DAC960_V2_ReportDeviceConfiguration reports the Device Configuration
2318   Information for DAC960 V2 Firmware Controllers.
2319 */
2320
2321 static bool DAC960_V2_ReportDeviceConfiguration(DAC960_Controller_T
2322                                                    *Controller)
2323 {
2324   int PhysicalDeviceIndex, LogicalDriveNumber;
2325   DAC960_Info("  Physical Devices:\n", Controller);
2326   for (PhysicalDeviceIndex = 0;
2327        PhysicalDeviceIndex < DAC960_V2_MaxPhysicalDevices;
2328        PhysicalDeviceIndex++)
2329     {
2330       DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
2331         Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
2332       DAC960_SCSI_Inquiry_T *InquiryStandardData =
2333         (DAC960_SCSI_Inquiry_T *) &PhysicalDeviceInfo->SCSI_InquiryData;
2334       DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2335         Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
2336       char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
2337       char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
2338       char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
2339       char SerialNumber[1+sizeof(InquiryUnitSerialNumber->ProductSerialNumber)];
2340       if (PhysicalDeviceInfo == NULL) break;
2341       DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
2342                                  Vendor, Model, Revision, SerialNumber);
2343       DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
2344                   Controller,
2345                   PhysicalDeviceInfo->Channel,
2346                   PhysicalDeviceInfo->TargetID,
2347                   (PhysicalDeviceInfo->TargetID < 10 ? " " : ""),
2348                   Vendor, Model, Revision);
2349       if (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers == 0)
2350         DAC960_Info("         %sAsynchronous\n", Controller,
2351                     (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
2352                      ? "Wide " :""));
2353       else
2354         DAC960_Info("         %sSynchronous at %d MB/sec\n", Controller,
2355                     (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
2356                      ? "Wide " :""),
2357                     (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers
2358                      * PhysicalDeviceInfo->NegotiatedDataWidthBits/8));
2359       if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
2360         DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
2361       if (PhysicalDeviceInfo->PhysicalDeviceState ==
2362           DAC960_V2_Device_Unconfigured)
2363         continue;
2364       DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
2365                   (PhysicalDeviceInfo->PhysicalDeviceState
2366                    == DAC960_V2_Device_Online
2367                    ? "Online"
2368                    : PhysicalDeviceInfo->PhysicalDeviceState
2369                      == DAC960_V2_Device_Rebuild
2370                      ? "Rebuild"
2371                      : PhysicalDeviceInfo->PhysicalDeviceState
2372                        == DAC960_V2_Device_Missing
2373                        ? "Missing"
2374                        : PhysicalDeviceInfo->PhysicalDeviceState
2375                          == DAC960_V2_Device_Critical
2376                          ? "Critical"
2377                          : PhysicalDeviceInfo->PhysicalDeviceState
2378                            == DAC960_V2_Device_Dead
2379                            ? "Dead"
2380                            : PhysicalDeviceInfo->PhysicalDeviceState
2381                              == DAC960_V2_Device_SuspectedDead
2382                              ? "Suspected-Dead"
2383                              : PhysicalDeviceInfo->PhysicalDeviceState
2384                                == DAC960_V2_Device_CommandedOffline
2385                                ? "Commanded-Offline"
2386                                : PhysicalDeviceInfo->PhysicalDeviceState
2387                                  == DAC960_V2_Device_Standby
2388                                  ? "Standby" : "Unknown"),
2389                   PhysicalDeviceInfo->ConfigurableDeviceSize);
2390       if (PhysicalDeviceInfo->ParityErrors == 0 &&
2391           PhysicalDeviceInfo->SoftErrors == 0 &&
2392           PhysicalDeviceInfo->HardErrors == 0 &&
2393           PhysicalDeviceInfo->MiscellaneousErrors == 0 &&
2394           PhysicalDeviceInfo->CommandTimeouts == 0 &&
2395           PhysicalDeviceInfo->Retries == 0 &&
2396           PhysicalDeviceInfo->Aborts == 0 &&
2397           PhysicalDeviceInfo->PredictedFailuresDetected == 0)
2398         continue;
2399       DAC960_Info("         Errors - Parity: %d, Soft: %d, "
2400                   "Hard: %d, Misc: %d\n", Controller,
2401                   PhysicalDeviceInfo->ParityErrors,
2402                   PhysicalDeviceInfo->SoftErrors,
2403                   PhysicalDeviceInfo->HardErrors,
2404                   PhysicalDeviceInfo->MiscellaneousErrors);
2405       DAC960_Info("                  Timeouts: %d, Retries: %d, "
2406                   "Aborts: %d, Predicted: %d\n", Controller,
2407                   PhysicalDeviceInfo->CommandTimeouts,
2408                   PhysicalDeviceInfo->Retries,
2409                   PhysicalDeviceInfo->Aborts,
2410                   PhysicalDeviceInfo->PredictedFailuresDetected);
2411     }
2412   DAC960_Info("  Logical Drives:\n", Controller);
2413   for (LogicalDriveNumber = 0;
2414        LogicalDriveNumber < DAC960_MaxLogicalDrives;
2415        LogicalDriveNumber++)
2416     {
2417       DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
2418         Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
2419       unsigned char *ReadCacheStatus[] = { "Read Cache Disabled",
2420                                            "Read Cache Enabled",
2421                                            "Read Ahead Enabled",
2422                                            "Intelligent Read Ahead Enabled",
2423                                            "-", "-", "-", "-" };
2424       unsigned char *WriteCacheStatus[] = { "Write Cache Disabled",
2425                                             "Logical Device Read Only",
2426                                             "Write Cache Enabled",
2427                                             "Intelligent Write Cache Enabled",
2428                                             "-", "-", "-", "-" };
2429       unsigned char *GeometryTranslation;
2430       if (LogicalDeviceInfo == NULL) continue;
2431       switch (LogicalDeviceInfo->DriveGeometry)
2432         {
2433         case DAC960_V2_Geometry_128_32:
2434           GeometryTranslation = "128/32";
2435           break;
2436         case DAC960_V2_Geometry_255_63:
2437           GeometryTranslation = "255/63";
2438           break;
2439         default:
2440           GeometryTranslation = "Invalid";
2441           DAC960_Error("Illegal Logical Device Geometry %d\n",
2442                        Controller, LogicalDeviceInfo->DriveGeometry);
2443           break;
2444         }
2445       DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks\n",
2446                   Controller, Controller->ControllerNumber, LogicalDriveNumber,
2447                   LogicalDeviceInfo->RAIDLevel,
2448                   (LogicalDeviceInfo->LogicalDeviceState
2449                    == DAC960_V2_LogicalDevice_Online
2450                    ? "Online"
2451                    : LogicalDeviceInfo->LogicalDeviceState
2452                      == DAC960_V2_LogicalDevice_Critical
2453                      ? "Critical" : "Offline"),
2454                   LogicalDeviceInfo->ConfigurableDeviceSize);
2455       DAC960_Info("                  Logical Device %s, BIOS Geometry: %s\n",
2456                   Controller,
2457                   (LogicalDeviceInfo->LogicalDeviceControl
2458                                      .LogicalDeviceInitialized
2459                    ? "Initialized" : "Uninitialized"),
2460                   GeometryTranslation);
2461       if (LogicalDeviceInfo->StripeSize == 0)
2462         {
2463           if (LogicalDeviceInfo->CacheLineSize == 0)
2464             DAC960_Info("                  Stripe Size: N/A, "
2465                         "Segment Size: N/A\n", Controller);
2466           else
2467             DAC960_Info("                  Stripe Size: N/A, "
2468                         "Segment Size: %dKB\n", Controller,
2469                         1 << (LogicalDeviceInfo->CacheLineSize - 2));
2470         }
2471       else
2472         {
2473           if (LogicalDeviceInfo->CacheLineSize == 0)
2474             DAC960_Info("                  Stripe Size: %dKB, "
2475                         "Segment Size: N/A\n", Controller,
2476                         1 << (LogicalDeviceInfo->StripeSize - 2));
2477           else
2478             DAC960_Info("                  Stripe Size: %dKB, "
2479                         "Segment Size: %dKB\n", Controller,
2480                         1 << (LogicalDeviceInfo->StripeSize - 2),
2481                         1 << (LogicalDeviceInfo->CacheLineSize - 2));
2482         }
2483       DAC960_Info("                  %s, %s\n", Controller,
2484                   ReadCacheStatus[
2485                     LogicalDeviceInfo->LogicalDeviceControl.ReadCache],
2486                   WriteCacheStatus[
2487                     LogicalDeviceInfo->LogicalDeviceControl.WriteCache]);
2488       if (LogicalDeviceInfo->SoftErrors > 0 ||
2489           LogicalDeviceInfo->CommandsFailed > 0 ||
2490           LogicalDeviceInfo->DeferredWriteErrors)
2491         DAC960_Info("                  Errors - Soft: %d, Failed: %d, "
2492                     "Deferred Write: %d\n", Controller,
2493                     LogicalDeviceInfo->SoftErrors,
2494                     LogicalDeviceInfo->CommandsFailed,
2495                     LogicalDeviceInfo->DeferredWriteErrors);
2496
2497     }
2498   return true;
2499 }
2500
2501 /*
2502   DAC960_RegisterBlockDevice registers the Block Device structures
2503   associated with Controller.
2504 */
2505
2506 static bool DAC960_RegisterBlockDevice(DAC960_Controller_T *Controller)
2507 {
2508   int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
2509   int n;
2510
2511   /*
2512     Register the Block Device Major Number for this DAC960 Controller.
2513   */
2514   if (register_blkdev(MajorNumber, "dac960") < 0)
2515       return false;
2516
2517   for (n = 0; n < DAC960_MaxLogicalDrives; n++) {
2518         struct gendisk *disk = Controller->disks[n];
2519         struct request_queue *RequestQueue;
2520
2521         /* for now, let all request queues share controller's lock */
2522         RequestQueue = blk_init_queue(DAC960_RequestFunction,&Controller->queue_lock);
2523         if (!RequestQueue) {
2524                 printk("DAC960: failure to allocate request queue\n");
2525                 continue;
2526         }
2527         Controller->RequestQueue[n] = RequestQueue;
2528         blk_queue_bounce_limit(RequestQueue, Controller->BounceBufferLimit);
2529         RequestQueue->queuedata = Controller;
2530         blk_queue_max_hw_segments(RequestQueue, Controller->DriverScatterGatherLimit);
2531         blk_queue_max_phys_segments(RequestQueue, Controller->DriverScatterGatherLimit);
2532         blk_queue_max_sectors(RequestQueue, Controller->MaxBlocksPerCommand);
2533         disk->queue = RequestQueue;
2534         sprintf(disk->disk_name, "rd/c%dd%d", Controller->ControllerNumber, n);
2535         disk->major = MajorNumber;
2536         disk->first_minor = n << DAC960_MaxPartitionsBits;
2537         disk->fops = &DAC960_BlockDeviceOperations;
2538    }
2539   /*
2540     Indicate the Block Device Registration completed successfully,
2541   */
2542   return true;
2543 }
2544
2545
2546 /*
2547   DAC960_UnregisterBlockDevice unregisters the Block Device structures
2548   associated with Controller.
2549 */
2550
2551 static void DAC960_UnregisterBlockDevice(DAC960_Controller_T *Controller)
2552 {
2553   int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
2554   int disk;
2555
2556   /* does order matter when deleting gendisk and cleanup in request queue? */
2557   for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
2558         del_gendisk(Controller->disks[disk]);
2559         blk_cleanup_queue(Controller->RequestQueue[disk]);
2560         Controller->RequestQueue[disk] = NULL;
2561   }
2562
2563   /*
2564     Unregister the Block Device Major Number for this DAC960 Controller.
2565   */
2566   unregister_blkdev(MajorNumber, "dac960");
2567 }
2568
2569 /*
2570   DAC960_ComputeGenericDiskInfo computes the values for the Generic Disk
2571   Information Partition Sector Counts and Block Sizes.
2572 */
2573
2574 static void DAC960_ComputeGenericDiskInfo(DAC960_Controller_T *Controller)
2575 {
2576         int disk;
2577         for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++)
2578                 set_capacity(Controller->disks[disk], disk_size(Controller, disk));
2579 }
2580
2581 /*
2582   DAC960_ReportErrorStatus reports Controller BIOS Messages passed through
2583   the Error Status Register when the driver performs the BIOS handshaking.
2584   It returns true for fatal errors and false otherwise.
2585 */
2586
2587 static bool DAC960_ReportErrorStatus(DAC960_Controller_T *Controller,
2588                                         unsigned char ErrorStatus,
2589                                         unsigned char Parameter0,
2590                                         unsigned char Parameter1)
2591 {
2592   switch (ErrorStatus)
2593     {
2594     case 0x00:
2595       DAC960_Notice("Physical Device %d:%d Not Responding\n",
2596                     Controller, Parameter1, Parameter0);
2597       break;
2598     case 0x08:
2599       if (Controller->DriveSpinUpMessageDisplayed) break;
2600       DAC960_Notice("Spinning Up Drives\n", Controller);
2601       Controller->DriveSpinUpMessageDisplayed = true;
2602       break;
2603     case 0x30:
2604       DAC960_Notice("Configuration Checksum Error\n", Controller);
2605       break;
2606     case 0x60:
2607       DAC960_Notice("Mirror Race Recovery Failed\n", Controller);
2608       break;
2609     case 0x70:
2610       DAC960_Notice("Mirror Race Recovery In Progress\n", Controller);
2611       break;
2612     case 0x90:
2613       DAC960_Notice("Physical Device %d:%d COD Mismatch\n",
2614                     Controller, Parameter1, Parameter0);
2615       break;
2616     case 0xA0:
2617       DAC960_Notice("Logical Drive Installation Aborted\n", Controller);
2618       break;
2619     case 0xB0:
2620       DAC960_Notice("Mirror Race On A Critical Logical Drive\n", Controller);
2621       break;
2622     case 0xD0:
2623       DAC960_Notice("New Controller Configuration Found\n", Controller);
2624       break;
2625     case 0xF0:
2626       DAC960_Error("Fatal Memory Parity Error for Controller at\n", Controller);
2627       return true;
2628     default:
2629       DAC960_Error("Unknown Initialization Error %02X for Controller at\n",
2630                    Controller, ErrorStatus);
2631       return true;
2632     }
2633   return false;
2634 }
2635
2636
2637 /*
2638  * DAC960_DetectCleanup releases the resources that were allocated
2639  * during DAC960_DetectController().  DAC960_DetectController can
2640  * has several internal failure points, so not ALL resources may
2641  * have been allocated.  It's important to free only
2642  * resources that HAVE been allocated.  The code below always
2643  * tests that the resource has been allocated before attempting to
2644  * free it.
2645  */
2646 static void DAC960_DetectCleanup(DAC960_Controller_T *Controller)
2647 {
2648   int i;
2649
2650   /* Free the memory mailbox, status, and related structures */
2651   free_dma_loaf(Controller->PCIDevice, &Controller->DmaPages);
2652   if (Controller->MemoryMappedAddress) {
2653         switch(Controller->HardwareType)
2654         {
2655                 case DAC960_GEM_Controller:
2656                         DAC960_GEM_DisableInterrupts(Controller->BaseAddress);
2657                         break;
2658                 case DAC960_BA_Controller:
2659                         DAC960_BA_DisableInterrupts(Controller->BaseAddress);
2660                         break;
2661                 case DAC960_LP_Controller:
2662                         DAC960_LP_DisableInterrupts(Controller->BaseAddress);
2663                         break;
2664                 case DAC960_LA_Controller:
2665                         DAC960_LA_DisableInterrupts(Controller->BaseAddress);
2666                         break;
2667                 case DAC960_PG_Controller:
2668                         DAC960_PG_DisableInterrupts(Controller->BaseAddress);
2669                         break;
2670                 case DAC960_PD_Controller:
2671                         DAC960_PD_DisableInterrupts(Controller->BaseAddress);
2672                         break;
2673                 case DAC960_P_Controller:
2674                         DAC960_PD_DisableInterrupts(Controller->BaseAddress);
2675                         break;
2676         }
2677         iounmap(Controller->MemoryMappedAddress);
2678   }
2679   if (Controller->IRQ_Channel)
2680         free_irq(Controller->IRQ_Channel, Controller);
2681   if (Controller->IO_Address)
2682         release_region(Controller->IO_Address, 0x80);
2683   pci_disable_device(Controller->PCIDevice);
2684   for (i = 0; (i < DAC960_MaxLogicalDrives) && Controller->disks[i]; i++)
2685        put_disk(Controller->disks[i]);
2686   DAC960_Controllers[Controller->ControllerNumber] = NULL;
2687   kfree(Controller);
2688 }
2689
2690
2691 /*
2692   DAC960_DetectController detects Mylex DAC960/AcceleRAID/eXtremeRAID
2693   PCI RAID Controllers by interrogating the PCI Configuration Space for
2694   Controller Type.
2695 */
2696
2697 static DAC960_Controller_T *
2698 DAC960_DetectController(struct pci_dev *PCI_Device,
2699                         const struct pci_device_id *entry)
2700 {
2701   struct DAC960_privdata *privdata =
2702                 (struct DAC960_privdata *)entry->driver_data;
2703   irq_handler_t InterruptHandler = privdata->InterruptHandler;
2704   unsigned int MemoryWindowSize = privdata->MemoryWindowSize;
2705   DAC960_Controller_T *Controller = NULL;
2706   unsigned char DeviceFunction = PCI_Device->devfn;
2707   unsigned char ErrorStatus, Parameter0, Parameter1;
2708   unsigned int IRQ_Channel;
2709   void __iomem *BaseAddress;
2710   int i;
2711
2712   Controller = kzalloc(sizeof(DAC960_Controller_T), GFP_ATOMIC);
2713   if (Controller == NULL) {
2714         DAC960_Error("Unable to allocate Controller structure for "
2715                        "Controller at\n", NULL);
2716         return NULL;
2717   }
2718   Controller->ControllerNumber = DAC960_ControllerCount;
2719   DAC960_Controllers[DAC960_ControllerCount++] = Controller;
2720   Controller->Bus = PCI_Device->bus->number;
2721   Controller->FirmwareType = privdata->FirmwareType;
2722   Controller->HardwareType = privdata->HardwareType;
2723   Controller->Device = DeviceFunction >> 3;
2724   Controller->Function = DeviceFunction & 0x7;
2725   Controller->PCIDevice = PCI_Device;
2726   strcpy(Controller->FullModelName, "DAC960");
2727
2728   if (pci_enable_device(PCI_Device))
2729         goto Failure;
2730
2731   switch (Controller->HardwareType)
2732   {
2733         case DAC960_GEM_Controller:
2734           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2735           break;
2736         case DAC960_BA_Controller:
2737           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2738           break;
2739         case DAC960_LP_Controller:
2740           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2741           break;
2742         case DAC960_LA_Controller:
2743           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2744           break;
2745         case DAC960_PG_Controller:
2746           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2747           break;
2748         case DAC960_PD_Controller:
2749           Controller->IO_Address = pci_resource_start(PCI_Device, 0);
2750           Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
2751           break;
2752         case DAC960_P_Controller:
2753           Controller->IO_Address = pci_resource_start(PCI_Device, 0);
2754           Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
2755           break;
2756   }
2757
2758   pci_set_drvdata(PCI_Device, (void *)((long)Controller->ControllerNumber));
2759   for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
2760         Controller->disks[i] = alloc_disk(1<<DAC960_MaxPartitionsBits);
2761         if (!Controller->disks[i])
2762                 goto Failure;
2763         Controller->disks[i]->private_data = (void *)((long)i);
2764   }
2765   init_waitqueue_head(&Controller->CommandWaitQueue);
2766   init_waitqueue_head(&Controller->HealthStatusWaitQueue);
2767   spin_lock_init(&Controller->queue_lock);
2768   DAC960_AnnounceDriver(Controller);
2769   /*
2770     Map the Controller Register Window.
2771   */
2772  if (MemoryWindowSize < PAGE_SIZE)
2773         MemoryWindowSize = PAGE_SIZE;
2774   Controller->MemoryMappedAddress =
2775         ioremap_nocache(Controller->PCI_Address & PAGE_MASK, MemoryWindowSize);
2776   Controller->BaseAddress =
2777         Controller->MemoryMappedAddress + (Controller->PCI_Address & ~PAGE_MASK);
2778   if (Controller->MemoryMappedAddress == NULL)
2779   {
2780           DAC960_Error("Unable to map Controller Register Window for "
2781                        "Controller at\n", Controller);
2782           goto Failure;
2783   }
2784   BaseAddress = Controller->BaseAddress;
2785   switch (Controller->HardwareType)
2786   {
2787         case DAC960_GEM_Controller:
2788           DAC960_GEM_DisableInterrupts(BaseAddress);
2789           DAC960_GEM_AcknowledgeHardwareMailboxStatus(BaseAddress);
2790           udelay(1000);
2791           while (DAC960_GEM_InitializationInProgressP(BaseAddress))
2792             {
2793               if (DAC960_GEM_ReadErrorStatus(BaseAddress, &ErrorStatus,
2794                                             &Parameter0, &Parameter1) &&
2795                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2796                                            Parameter0, Parameter1))
2797                 goto Failure;
2798               udelay(10);
2799             }
2800           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2801             {
2802               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2803                            "for Controller at\n", Controller);
2804               goto Failure;
2805             }
2806           DAC960_GEM_EnableInterrupts(BaseAddress);
2807           Controller->QueueCommand = DAC960_GEM_QueueCommand;
2808           Controller->ReadControllerConfiguration =
2809             DAC960_V2_ReadControllerConfiguration;
2810           Controller->ReadDeviceConfiguration =
2811             DAC960_V2_ReadDeviceConfiguration;
2812           Controller->ReportDeviceConfiguration =
2813             DAC960_V2_ReportDeviceConfiguration;
2814           Controller->QueueReadWriteCommand =
2815             DAC960_V2_QueueReadWriteCommand;
2816           break;
2817         case DAC960_BA_Controller:
2818           DAC960_BA_DisableInterrupts(BaseAddress);
2819           DAC960_BA_AcknowledgeHardwareMailboxStatus(BaseAddress);
2820           udelay(1000);
2821           while (DAC960_BA_InitializationInProgressP(BaseAddress))
2822             {
2823               if (DAC960_BA_ReadErrorStatus(BaseAddress, &ErrorStatus,
2824                                             &Parameter0, &Parameter1) &&
2825                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2826                                            Parameter0, Parameter1))
2827                 goto Failure;
2828               udelay(10);
2829             }
2830           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2831             {
2832               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2833                            "for Controller at\n", Controller);
2834               goto Failure;
2835             }
2836           DAC960_BA_EnableInterrupts(BaseAddress);
2837           Controller->QueueCommand = DAC960_BA_QueueCommand;
2838           Controller->ReadControllerConfiguration =
2839             DAC960_V2_ReadControllerConfiguration;
2840           Controller->ReadDeviceConfiguration =
2841             DAC960_V2_ReadDeviceConfiguration;
2842           Controller->ReportDeviceConfiguration =
2843             DAC960_V2_ReportDeviceConfiguration;
2844           Controller->QueueReadWriteCommand =
2845             DAC960_V2_QueueReadWriteCommand;
2846           break;
2847         case DAC960_LP_Controller:
2848           DAC960_LP_DisableInterrupts(BaseAddress);
2849           DAC960_LP_AcknowledgeHardwareMailboxStatus(BaseAddress);
2850           udelay(1000);
2851           while (DAC960_LP_InitializationInProgressP(BaseAddress))
2852             {
2853               if (DAC960_LP_ReadErrorStatus(BaseAddress, &ErrorStatus,
2854                                             &Parameter0, &Parameter1) &&
2855                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2856                                            Parameter0, Parameter1))
2857                 goto Failure;
2858               udelay(10);
2859             }
2860           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2861             {
2862               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2863                            "for Controller at\n", Controller);
2864               goto Failure;
2865             }
2866           DAC960_LP_EnableInterrupts(BaseAddress);
2867           Controller->QueueCommand = DAC960_LP_QueueCommand;
2868           Controller->ReadControllerConfiguration =
2869             DAC960_V2_ReadControllerConfiguration;
2870           Controller->ReadDeviceConfiguration =
2871             DAC960_V2_ReadDeviceConfiguration;
2872           Controller->ReportDeviceConfiguration =
2873             DAC960_V2_ReportDeviceConfiguration;
2874           Controller->QueueReadWriteCommand =
2875             DAC960_V2_QueueReadWriteCommand;
2876           break;
2877         case DAC960_LA_Controller:
2878           DAC960_LA_DisableInterrupts(BaseAddress);
2879           DAC960_LA_AcknowledgeHardwareMailboxStatus(BaseAddress);
2880           udelay(1000);
2881           while (DAC960_LA_InitializationInProgressP(BaseAddress))
2882             {
2883               if (DAC960_LA_ReadErrorStatus(BaseAddress, &ErrorStatus,
2884                                             &Parameter0, &Parameter1) &&
2885                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2886                                            Parameter0, Parameter1))
2887                 goto Failure;
2888               udelay(10);
2889             }
2890           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2891             {
2892               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2893                            "for Controller at\n", Controller);
2894               goto Failure;
2895             }
2896           DAC960_LA_EnableInterrupts(BaseAddress);
2897           if (Controller->V1.DualModeMemoryMailboxInterface)
2898             Controller->QueueCommand = DAC960_LA_QueueCommandDualMode;
2899           else Controller->QueueCommand = DAC960_LA_QueueCommandSingleMode;
2900           Controller->ReadControllerConfiguration =
2901             DAC960_V1_ReadControllerConfiguration;
2902           Controller->ReadDeviceConfiguration =
2903             DAC960_V1_ReadDeviceConfiguration;
2904           Controller->ReportDeviceConfiguration =
2905             DAC960_V1_ReportDeviceConfiguration;
2906           Controller->QueueReadWriteCommand =
2907             DAC960_V1_QueueReadWriteCommand;
2908           break;
2909         case DAC960_PG_Controller:
2910           DAC960_PG_DisableInterrupts(BaseAddress);
2911           DAC960_PG_AcknowledgeHardwareMailboxStatus(BaseAddress);
2912           udelay(1000);
2913           while (DAC960_PG_InitializationInProgressP(BaseAddress))
2914             {
2915               if (DAC960_PG_ReadErrorStatus(BaseAddress, &ErrorStatus,
2916                                             &Parameter0, &Parameter1) &&
2917                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2918                                            Parameter0, Parameter1))
2919                 goto Failure;
2920               udelay(10);
2921             }
2922           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2923             {
2924               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2925                            "for Controller at\n", Controller);
2926               goto Failure;
2927             }
2928           DAC960_PG_EnableInterrupts(BaseAddress);
2929           if (Controller->V1.DualModeMemoryMailboxInterface)
2930             Controller->QueueCommand = DAC960_PG_QueueCommandDualMode;
2931           else Controller->QueueCommand = DAC960_PG_QueueCommandSingleMode;
2932           Controller->ReadControllerConfiguration =
2933             DAC960_V1_ReadControllerConfiguration;
2934           Controller->ReadDeviceConfiguration =
2935             DAC960_V1_ReadDeviceConfiguration;
2936           Controller->ReportDeviceConfiguration =
2937             DAC960_V1_ReportDeviceConfiguration;
2938           Controller->QueueReadWriteCommand =
2939             DAC960_V1_QueueReadWriteCommand;
2940           break;
2941         case DAC960_PD_Controller:
2942           if (!request_region(Controller->IO_Address, 0x80,
2943                               Controller->FullModelName)) {
2944                 DAC960_Error("IO port 0x%d busy for Controller at\n",
2945                              Controller, Controller->IO_Address);
2946                 goto Failure;
2947           }
2948           DAC960_PD_DisableInterrupts(BaseAddress);
2949           DAC960_PD_AcknowledgeStatus(BaseAddress);
2950           udelay(1000);
2951           while (DAC960_PD_InitializationInProgressP(BaseAddress))
2952             {
2953               if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
2954                                             &Parameter0, &Parameter1) &&
2955                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2956                                            Parameter0, Parameter1))
2957                 goto Failure;
2958               udelay(10);
2959             }
2960           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2961             {
2962               DAC960_Error("Unable to allocate DMA mapped memory "
2963                            "for Controller at\n", Controller);
2964               goto Failure;
2965             }
2966           DAC960_PD_EnableInterrupts(BaseAddress);
2967           Controller->QueueCommand = DAC960_PD_QueueCommand;
2968           Controller->ReadControllerConfiguration =
2969             DAC960_V1_ReadControllerConfiguration;
2970           Controller->ReadDeviceConfiguration =
2971             DAC960_V1_ReadDeviceConfiguration;
2972           Controller->ReportDeviceConfiguration =
2973             DAC960_V1_ReportDeviceConfiguration;
2974           Controller->QueueReadWriteCommand =
2975             DAC960_V1_QueueReadWriteCommand;
2976           break;
2977         case DAC960_P_Controller:
2978           if (!request_region(Controller->IO_Address, 0x80,
2979                               Controller->FullModelName)){
2980                 DAC960_Error("IO port 0x%d busy for Controller at\n",
2981                              Controller, Controller->IO_Address);
2982                 goto Failure;
2983           }
2984           DAC960_PD_DisableInterrupts(BaseAddress);
2985           DAC960_PD_AcknowledgeStatus(BaseAddress);
2986           udelay(1000);
2987           while (DAC960_PD_InitializationInProgressP(BaseAddress))
2988             {
2989               if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
2990                                             &Parameter0, &Parameter1) &&
2991                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2992                                            Parameter0, Parameter1))
2993                 goto Failure;
2994               udelay(10);
2995             }
2996           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2997             {
2998               DAC960_Error("Unable to allocate DMA mapped memory"
2999                            "for Controller at\n", Controller);
3000               goto Failure;
3001             }
3002           DAC960_PD_EnableInterrupts(BaseAddress);
3003           Controller->QueueCommand = DAC960_P_QueueCommand;
3004           Controller->ReadControllerConfiguration =
3005             DAC960_V1_ReadControllerConfiguration;
3006           Controller->ReadDeviceConfiguration =
3007             DAC960_V1_ReadDeviceConfiguration;
3008           Controller->ReportDeviceConfiguration =
3009             DAC960_V1_ReportDeviceConfiguration;
3010           Controller->QueueReadWriteCommand =
3011             DAC960_V1_QueueReadWriteCommand;
3012           break;
3013   }
3014   /*
3015      Acquire shared access to the IRQ Channel.
3016   */
3017   IRQ_Channel = PCI_Device->irq;
3018   if (request_irq(IRQ_Channel, InterruptHandler, IRQF_SHARED,
3019                       Controller->FullModelName, Controller) < 0)
3020   {
3021         DAC960_Error("Unable to acquire IRQ Channel %d for Controller at\n",
3022                        Controller, Controller->IRQ_Channel);
3023         goto Failure;
3024   }
3025   Controller->IRQ_Channel = IRQ_Channel;
3026   Controller->InitialCommand.CommandIdentifier = 1;
3027   Controller->InitialCommand.Controller = Controller;
3028   Controller->Commands[0] = &Controller->InitialCommand;
3029   Controller->FreeCommands = &Controller->InitialCommand;
3030   return Controller;
3031
3032 Failure:
3033   if (Controller->IO_Address == 0)
3034         DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
3035                      "PCI Address 0x%X\n", Controller,
3036                      Controller->Bus, Controller->Device,
3037                      Controller->Function, Controller->PCI_Address);
3038   else
3039         DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
3040                         "0x%X PCI Address 0x%X\n", Controller,
3041                         Controller->Bus, Controller->Device,
3042                         Controller->Function, Controller->IO_Address,
3043                         Controller->PCI_Address);
3044   DAC960_DetectCleanup(Controller);
3045   DAC960_ControllerCount--;
3046   return NULL;
3047 }
3048
3049 /*
3050   DAC960_InitializeController initializes Controller.
3051 */
3052
3053 static bool
3054 DAC960_InitializeController(DAC960_Controller_T *Controller)
3055 {
3056   if (DAC960_ReadControllerConfiguration(Controller) &&
3057       DAC960_ReportControllerConfiguration(Controller) &&
3058       DAC960_CreateAuxiliaryStructures(Controller) &&
3059       DAC960_ReadDeviceConfiguration(Controller) &&
3060       DAC960_ReportDeviceConfiguration(Controller) &&
3061       DAC960_RegisterBlockDevice(Controller))
3062     {
3063       /*
3064         Initialize the Monitoring Timer.
3065       */
3066       init_timer(&Controller->MonitoringTimer);
3067       Controller->MonitoringTimer.expires =
3068         jiffies + DAC960_MonitoringTimerInterval;
3069       Controller->MonitoringTimer.data = (unsigned long) Controller;
3070       Controller->MonitoringTimer.function = DAC960_MonitoringTimerFunction;
3071       add_timer(&Controller->MonitoringTimer);
3072       Controller->ControllerInitialized = true;
3073       return true;
3074     }
3075   return false;
3076 }
3077
3078
3079 /*
3080   DAC960_FinalizeController finalizes Controller.
3081 */
3082
3083 static void DAC960_FinalizeController(DAC960_Controller_T *Controller)
3084 {
3085   if (Controller->ControllerInitialized)
3086     {
3087       unsigned long flags;
3088
3089       /*
3090        * Acquiring and releasing lock here eliminates
3091        * a very low probability race.
3092        *
3093        * The code below allocates controller command structures
3094        * from the free list without holding the controller lock.
3095        * This is safe assuming there is no other activity on
3096        * the controller at the time.
3097        *
3098        * But, there might be a monitoring command still
3099        * in progress.  Setting the Shutdown flag while holding
3100        * the lock ensures that there is no monitoring command
3101        * in the interrupt handler currently, and any monitoring
3102        * commands that complete from this time on will NOT return
3103        * their command structure to the free list.
3104        */
3105
3106       spin_lock_irqsave(&Controller->queue_lock, flags);
3107       Controller->ShutdownMonitoringTimer = 1;
3108       spin_unlock_irqrestore(&Controller->queue_lock, flags);
3109
3110       del_timer_sync(&Controller->MonitoringTimer);
3111       if (Controller->FirmwareType == DAC960_V1_Controller)
3112         {
3113           DAC960_Notice("Flushing Cache...", Controller);
3114           DAC960_V1_ExecuteType3(Controller, DAC960_V1_Flush, 0);
3115           DAC960_Notice("done\n", Controller);
3116
3117           if (Controller->HardwareType == DAC960_PD_Controller)
3118               release_region(Controller->IO_Address, 0x80);
3119         }
3120       else
3121         {
3122           DAC960_Notice("Flushing Cache...", Controller);
3123           DAC960_V2_DeviceOperation(Controller, DAC960_V2_PauseDevice,
3124                                     DAC960_V2_RAID_Controller);
3125           DAC960_Notice("done\n", Controller);
3126         }
3127     }
3128   DAC960_UnregisterBlockDevice(Controller);
3129   DAC960_DestroyAuxiliaryStructures(Controller);
3130   DAC960_DestroyProcEntries(Controller);
3131   DAC960_DetectCleanup(Controller);
3132 }
3133
3134
3135 /*
3136   DAC960_Probe verifies controller's existence and
3137   initializes the DAC960 Driver for that controller.
3138 */
3139
3140 static int
3141 DAC960_Probe(struct pci_dev *dev, const struct pci_device_id *entry)
3142 {
3143   int disk;
3144   DAC960_Controller_T *Controller;
3145
3146   if (DAC960_ControllerCount == DAC960_MaxControllers)
3147   {
3148         DAC960_Error("More than %d DAC960 Controllers detected - "
3149                        "ignoring from Controller at\n",
3150                        NULL, DAC960_MaxControllers);
3151         return -ENODEV;
3152   }
3153
3154   Controller = DAC960_DetectController(dev, entry);
3155   if (!Controller)
3156         return -ENODEV;
3157
3158   if (!DAC960_InitializeController(Controller)) {
3159         DAC960_FinalizeController(Controller);
3160         return -ENODEV;
3161   }
3162
3163   for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
3164         set_capacity(Controller->disks[disk], disk_size(Controller, disk));
3165         add_disk(Controller->disks[disk]);
3166   }
3167   DAC960_CreateProcEntries(Controller);
3168   return 0;
3169 }
3170
3171
3172 /*
3173   DAC960_Finalize finalizes the DAC960 Driver.
3174 */
3175
3176 static void DAC960_Remove(struct pci_dev *PCI_Device)
3177 {
3178   int Controller_Number = (long)pci_get_drvdata(PCI_Device);
3179   DAC960_Controller_T *Controller = DAC960_Controllers[Controller_Number];
3180   if (Controller != NULL)
3181       DAC960_FinalizeController(Controller);
3182 }
3183
3184
3185 /*
3186   DAC960_V1_QueueReadWriteCommand prepares and queues a Read/Write Command for
3187   DAC960 V1 Firmware Controllers.
3188 */
3189
3190 static void DAC960_V1_QueueReadWriteCommand(DAC960_Command_T *Command)
3191 {
3192   DAC960_Controller_T *Controller = Command->Controller;
3193   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
3194   DAC960_V1_ScatterGatherSegment_T *ScatterGatherList =
3195                                         Command->V1.ScatterGatherList;
3196   struct scatterlist *ScatterList = Command->V1.ScatterList;
3197
3198   DAC960_V1_ClearCommand(Command);
3199
3200   if (Command->SegmentCount == 1)
3201     {
3202       if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3203         CommandMailbox->Type5.CommandOpcode = DAC960_V1_Read;
3204       else
3205         CommandMailbox->Type5.CommandOpcode = DAC960_V1_Write;
3206
3207       CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
3208       CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
3209       CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
3210       CommandMailbox->Type5.BusAddress =
3211                         (DAC960_BusAddress32_T)sg_dma_address(ScatterList);
3212     }
3213   else
3214     {
3215       int i;
3216
3217       if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3218         CommandMailbox->Type5.CommandOpcode = DAC960_V1_ReadWithScatterGather;
3219       else
3220         CommandMailbox->Type5.CommandOpcode = DAC960_V1_WriteWithScatterGather;
3221
3222       CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
3223       CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
3224       CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
3225       CommandMailbox->Type5.BusAddress = Command->V1.ScatterGatherListDMA;
3226
3227       CommandMailbox->Type5.ScatterGatherCount = Command->SegmentCount;
3228
3229       for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
3230                 ScatterGatherList->SegmentDataPointer =
3231                         (DAC960_BusAddress32_T)sg_dma_address(ScatterList);
3232                 ScatterGatherList->SegmentByteCount =
3233                         (DAC960_ByteCount32_T)sg_dma_len(ScatterList);
3234       }
3235     }
3236   DAC960_QueueCommand(Command);
3237 }
3238
3239
3240 /*
3241   DAC960_V2_QueueReadWriteCommand prepares and queues a Read/Write Command for
3242   DAC960 V2 Firmware Controllers.
3243 */
3244
3245 static void DAC960_V2_QueueReadWriteCommand(DAC960_Command_T *Command)
3246 {
3247   DAC960_Controller_T *Controller = Command->Controller;
3248   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
3249   struct scatterlist *ScatterList = Command->V2.ScatterList;
3250
3251   DAC960_V2_ClearCommand(Command);
3252
3253   CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10;
3254   CommandMailbox->SCSI_10.CommandControlBits.DataTransferControllerToHost =
3255     (Command->DmaDirection == PCI_DMA_FROMDEVICE);
3256   CommandMailbox->SCSI_10.DataTransferSize =
3257     Command->BlockCount << DAC960_BlockSizeBits;
3258   CommandMailbox->SCSI_10.RequestSenseBusAddress = Command->V2.RequestSenseDMA;
3259   CommandMailbox->SCSI_10.PhysicalDevice =
3260     Controller->V2.LogicalDriveToVirtualDevice[Command->LogicalDriveNumber];
3261   CommandMailbox->SCSI_10.RequestSenseSize = sizeof(DAC960_SCSI_RequestSense_T);
3262   CommandMailbox->SCSI_10.CDBLength = 10;
3263   CommandMailbox->SCSI_10.SCSI_CDB[0] =
3264     (Command->DmaDirection == PCI_DMA_FROMDEVICE ? 0x28 : 0x2A);
3265   CommandMailbox->SCSI_10.SCSI_CDB[2] = Command->BlockNumber >> 24;
3266   CommandMailbox->SCSI_10.SCSI_CDB[3] = Command->BlockNumber >> 16;
3267   CommandMailbox->SCSI_10.SCSI_CDB[4] = Command->BlockNumber >> 8;
3268   CommandMailbox->SCSI_10.SCSI_CDB[5] = Command->BlockNumber;
3269   CommandMailbox->SCSI_10.SCSI_CDB[7] = Command->BlockCount >> 8;
3270   CommandMailbox->SCSI_10.SCSI_CDB[8] = Command->BlockCount;
3271
3272   if (Command->SegmentCount == 1)
3273     {
3274       CommandMailbox->SCSI_10.DataTransferMemoryAddress
3275                              .ScatterGatherSegments[0]
3276                              .SegmentDataPointer =
3277         (DAC960_BusAddress64_T)sg_dma_address(ScatterList);
3278       CommandMailbox->SCSI_10.DataTransferMemoryAddress
3279                              .ScatterGatherSegments[0]
3280                              .SegmentByteCount =
3281         CommandMailbox->SCSI_10.DataTransferSize;
3282     }
3283   else
3284     {
3285       DAC960_V2_ScatterGatherSegment_T *ScatterGatherList;
3286       int i;
3287
3288       if (Command->SegmentCount > 2)
3289         {
3290           ScatterGatherList = Command->V2.ScatterGatherList;
3291           CommandMailbox->SCSI_10.CommandControlBits
3292                          .AdditionalScatterGatherListMemory = true;
3293           CommandMailbox->SCSI_10.DataTransferMemoryAddress
3294                 .ExtendedScatterGather.ScatterGatherList0Length = Command->SegmentCount;
3295           CommandMailbox->SCSI_10.DataTransferMemoryAddress
3296                          .ExtendedScatterGather.ScatterGatherList0Address =
3297             Command->V2.ScatterGatherListDMA;
3298         }
3299       else
3300         ScatterGatherList = CommandMailbox->SCSI_10.DataTransferMemoryAddress
3301                                  .ScatterGatherSegments;
3302
3303       for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
3304                 ScatterGatherList->SegmentDataPointer =
3305                         (DAC960_BusAddress64_T)sg_dma_address(ScatterList);
3306                 ScatterGatherList->SegmentByteCount =
3307                         (DAC960_ByteCount64_T)sg_dma_len(ScatterList);
3308       }
3309     }
3310   DAC960_QueueCommand(Command);
3311 }
3312
3313
3314 static int DAC960_process_queue(DAC960_Controller_T *Controller, struct request_queue *req_q)
3315 {
3316         struct request *Request;
3317         DAC960_Command_T *Command;
3318
3319    while(1) {
3320         Request = elv_next_request(req_q);
3321         if (!Request)
3322                 return 1;
3323
3324         Command = DAC960_AllocateCommand(Controller);
3325         if (Command == NULL)
3326                 return 0;
3327
3328         if (rq_data_dir(Request) == READ) {
3329                 Command->DmaDirection = PCI_DMA_FROMDEVICE;
3330                 Command->CommandType = DAC960_ReadCommand;
3331         } else {
3332                 Command->DmaDirection = PCI_DMA_TODEVICE;
3333                 Command->CommandType = DAC960_WriteCommand;
3334         }
3335         Command->Completion = Request->end_io_data;
3336         Command->LogicalDriveNumber = (long)Request->rq_disk->private_data;
3337         Command->BlockNumber = Request->sector;
3338         Command->BlockCount = Request->nr_sectors;
3339         Command->Request = Request;
3340         blkdev_dequeue_request(Request);
3341         Command->SegmentCount = blk_rq_map_sg(req_q,
3342                   Command->Request, Command->cmd_sglist);
3343         /* pci_map_sg MAY change the value of SegCount */
3344         Command->SegmentCount = pci_map_sg(Controller->PCIDevice, Command->cmd_sglist,
3345                  Command->SegmentCount, Command->DmaDirection);
3346
3347         DAC960_QueueReadWriteCommand(Command);
3348   }
3349 }
3350
3351 /*
3352   DAC960_ProcessRequest attempts to remove one I/O Request from Controller's
3353   I/O Request Queue and queues it to the Controller.  WaitForCommand is true if
3354   this function should wait for a Command to become available if necessary.
3355   This function returns true if an I/O Request was queued and false otherwise.
3356 */
3357 static void DAC960_ProcessRequest(DAC960_Controller_T *controller)
3358 {
3359         int i;
3360
3361         if (!controller->ControllerInitialized)
3362                 return;
3363
3364         /* Do this better later! */
3365         for (i = controller->req_q_index; i < DAC960_MaxLogicalDrives; i++) {
3366                 struct request_queue *req_q = controller->RequestQueue[i];
3367
3368                 if (req_q == NULL)
3369                         continue;
3370
3371                 if (!DAC960_process_queue(controller, req_q)) {
3372                         controller->req_q_index = i;
3373                         return;
3374                 }
3375         }
3376
3377         if (controller->req_q_index == 0)
3378                 return;
3379
3380         for (i = 0; i < controller->req_q_index; i++) {
3381                 struct request_queue *req_q = controller->RequestQueue[i];
3382
3383                 if (req_q == NULL)
3384                         continue;
3385
3386                 if (!DAC960_process_queue(controller, req_q)) {
3387                         controller->req_q_index = i;
3388                         return;
3389                 }
3390         }
3391 }
3392
3393
3394 /*
3395   DAC960_queue_partial_rw extracts one bio from the request already
3396   associated with argument command, and construct a new command block to retry I/O
3397   only on that bio.  Queue that command to the controller.
3398
3399   This function re-uses a previously-allocated Command,
3400         there is no failure mode from trying to allocate a command.
3401 */
3402
3403 static void DAC960_queue_partial_rw(DAC960_Command_T *Command)
3404 {
3405   DAC960_Controller_T *Controller = Command->Controller;
3406   struct request *Request = Command->Request;
3407   struct request_queue *req_q = Controller->RequestQueue[Command->LogicalDriveNumber];
3408
3409   if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3410     Command->CommandType = DAC960_ReadRetryCommand;
3411   else
3412     Command->CommandType = DAC960_WriteRetryCommand;
3413
3414   /*
3415    * We could be more efficient with these mapping requests
3416    * and map only the portions that we need.  But since this
3417    * code should almost never be called, just go with a
3418    * simple coding.
3419    */
3420   (void)blk_rq_map_sg(req_q, Command->Request, Command->cmd_sglist);
3421
3422   (void)pci_map_sg(Controller->PCIDevice, Command->cmd_sglist, 1, Command->DmaDirection);
3423   /*
3424    * Resubmitting the request sector at a time is really tedious.
3425    * But, this should almost never happen.  So, we're willing to pay
3426    * this price so that in the end, as much of the transfer is completed
3427    * successfully as possible.
3428    */
3429   Command->SegmentCount = 1;
3430   Command->BlockNumber = Request->sector;
3431   Command->BlockCount = 1;
3432   DAC960_QueueReadWriteCommand(Command);
3433   return;
3434 }
3435
3436 /*
3437   DAC960_RequestFunction is the I/O Request Function for DAC960 Controllers.
3438 */
3439
3440 static void DAC960_RequestFunction(struct request_queue *RequestQueue)
3441 {
3442         DAC960_ProcessRequest(RequestQueue->queuedata);
3443 }
3444
3445 /*
3446   DAC960_ProcessCompletedBuffer performs completion processing for an
3447   individual Buffer.
3448 */
3449
3450 static inline bool DAC960_ProcessCompletedRequest(DAC960_Command_T *Command,
3451                                                  bool SuccessfulIO)
3452 {
3453         struct request *Request = Command->Request;
3454         int UpToDate;
3455
3456         UpToDate = 0;
3457         if (SuccessfulIO)
3458                 UpToDate = 1;
3459
3460         pci_unmap_sg(Command->Controller->PCIDevice, Command->cmd_sglist,
3461                 Command->SegmentCount, Command->DmaDirection);
3462
3463          if (!end_that_request_first(Request, UpToDate, Command->BlockCount)) {
3464                 add_disk_randomness(Request->rq_disk);
3465                 end_that_request_last(Request, UpToDate);
3466
3467                 if (Command->Completion) {
3468                         complete(Command->Completion);
3469                         Command->Completion = NULL;
3470                 }
3471                 return true;
3472         }
3473         return false;
3474 }
3475
3476 /*
3477   DAC960_V1_ReadWriteError prints an appropriate error message for Command
3478   when an error occurs on a Read or Write operation.
3479 */
3480
3481 static void DAC960_V1_ReadWriteError(DAC960_Command_T *Command)
3482 {
3483   DAC960_Controller_T *Controller = Command->Controller;
3484   unsigned char *CommandName = "UNKNOWN";
3485   switch (Command->CommandType)
3486     {
3487     case DAC960_ReadCommand:
3488     case DAC960_ReadRetryCommand:
3489       CommandName = "READ";
3490       break;
3491     case DAC960_WriteCommand:
3492     case DAC960_WriteRetryCommand:
3493       CommandName = "WRITE";
3494       break;
3495     case DAC960_MonitoringCommand:
3496     case DAC960_ImmediateCommand:
3497     case DAC960_QueuedCommand:
3498       break;
3499     }
3500   switch (Command->V1.CommandStatus)
3501     {
3502     case DAC960_V1_IrrecoverableDataError:
3503       DAC960_Error("Irrecoverable Data Error on %s:\n",
3504                    Controller, CommandName);
3505       break;
3506     case DAC960_V1_LogicalDriveNonexistentOrOffline:
3507       DAC960_Error("Logical Drive Nonexistent or Offline on %s:\n",
3508                    Controller, CommandName);
3509       break;
3510     case DAC960_V1_AccessBeyondEndOfLogicalDrive:
3511       DAC960_Error("Attempt to Access Beyond End of Logical Drive "
3512                    "on %s:\n", Controller, CommandName);
3513       break;
3514     case DAC960_V1_BadDataEncountered:
3515       DAC960_Error("Bad Data Encountered on %s:\n", Controller, CommandName);
3516       break;
3517     default:
3518       DAC960_Error("Unexpected Error Status %04X on %s:\n",
3519                    Controller, Command->V1.CommandStatus, CommandName);
3520       break;
3521     }
3522   DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
3523                Controller, Controller->ControllerNumber,
3524                Command->LogicalDriveNumber, Command->BlockNumber,
3525                Command->BlockNumber + Command->BlockCount - 1);
3526 }
3527
3528
3529 /*
3530   DAC960_V1_ProcessCompletedCommand performs completion processing for Command
3531   for DAC960 V1 Firmware Controllers.
3532 */
3533
3534 static void DAC960_V1_ProcessCompletedCommand(DAC960_Command_T *Command)
3535 {
3536   DAC960_Controller_T *Controller = Command->Controller;
3537   DAC960_CommandType_T CommandType = Command->CommandType;
3538   DAC960_V1_CommandOpcode_T CommandOpcode =
3539     Command->V1.CommandMailbox.Common.CommandOpcode;
3540   DAC960_V1_CommandStatus_T CommandStatus = Command->V1.CommandStatus;
3541
3542   if (CommandType == DAC960_ReadCommand ||
3543       CommandType == DAC960_WriteCommand)
3544     {
3545
3546 #ifdef FORCE_RETRY_DEBUG
3547       CommandStatus = DAC960_V1_IrrecoverableDataError;
3548 #endif
3549
3550       if (CommandStatus == DAC960_V1_NormalCompletion) {
3551
3552                 if (!DAC960_ProcessCompletedRequest(Command, true))
3553                         BUG();
3554
3555       } else if (CommandStatus == DAC960_V1_IrrecoverableDataError ||
3556                 CommandStatus == DAC960_V1_BadDataEncountered)
3557         {
3558           /*
3559            * break the command down into pieces and resubmit each
3560            * piece, hoping that some of them will succeed.
3561            */
3562            DAC960_queue_partial_rw(Command);
3563            return;
3564         }
3565       else
3566         {
3567           if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
3568             DAC960_V1_ReadWriteError(Command);
3569
3570          if (!DAC960_ProcessCompletedRequest(Command, false))
3571                 BUG();
3572         }
3573     }
3574   else if (CommandType == DAC960_ReadRetryCommand ||
3575            CommandType == DAC960_WriteRetryCommand)
3576     {
3577       bool normal_completion;
3578 #ifdef FORCE_RETRY_FAILURE_DEBUG
3579       static int retry_count = 1;
3580 #endif
3581       /*
3582         Perform completion processing for the portion that was
3583         retried, and submit the next portion, if any.
3584       */
3585       normal_completion = true;
3586       if (CommandStatus != DAC960_V1_NormalCompletion) {
3587         normal_completion = false;
3588         if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
3589             DAC960_V1_ReadWriteError(Command);
3590       }
3591
3592 #ifdef FORCE_RETRY_FAILURE_DEBUG
3593       if (!(++retry_count % 10000)) {
3594               printk("V1 error retry failure test\n");
3595               normal_completion = false;
3596               DAC960_V1_ReadWriteError(Command);
3597       }
3598 #endif
3599
3600       if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
3601         DAC960_queue_partial_rw(Command);
3602         return;
3603       }
3604     }
3605
3606   else if (CommandType == DAC960_MonitoringCommand)
3607     {
3608       if (Controller->ShutdownMonitoringTimer)
3609               return;
3610       if (CommandOpcode == DAC960_V1_Enquiry)
3611         {
3612           DAC960_V1_Enquiry_T *OldEnquiry = &Controller->V1.Enquiry;
3613           DAC960_V1_Enquiry_T *NewEnquiry = Controller->V1.NewEnquiry;
3614           unsigned int OldCriticalLogicalDriveCount =
3615             OldEnquiry->CriticalLogicalDriveCount;
3616           unsigned int NewCriticalLogicalDriveCount =
3617             NewEnquiry->CriticalLogicalDriveCount;
3618           if (NewEnquiry->NumberOfLogicalDrives > Controller->LogicalDriveCount)
3619             {
3620               int LogicalDriveNumber = Controller->LogicalDriveCount - 1;
3621               while (++LogicalDriveNumber < NewEnquiry->NumberOfLogicalDrives)
3622                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3623                                 "Now Exists\n", Controller,
3624                                 LogicalDriveNumber,
3625                                 Controller->ControllerNumber,
3626                                 LogicalDriveNumber);
3627               Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
3628               DAC960_ComputeGenericDiskInfo(Controller);
3629             }
3630           if (NewEnquiry->NumberOfLogicalDrives < Controller->LogicalDriveCount)
3631             {
3632               int LogicalDriveNumber = NewEnquiry->NumberOfLogicalDrives - 1;
3633               while (++LogicalDriveNumber < Controller->LogicalDriveCount)
3634                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3635                                 "No Longer Exists\n", Controller,
3636                                 LogicalDriveNumber,
3637                                 Controller->ControllerNumber,
3638                                 LogicalDriveNumber);
3639               Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
3640               DAC960_ComputeGenericDiskInfo(Controller);
3641             }
3642           if (NewEnquiry->StatusFlags.DeferredWriteError !=
3643               OldEnquiry->StatusFlags.DeferredWriteError)
3644             DAC960_Critical("Deferred Write Error Flag is now %s\n", Controller,
3645                             (NewEnquiry->StatusFlags.DeferredWriteError
3646                              ? "TRUE" : "FALSE"));
3647           if ((NewCriticalLogicalDriveCount > 0 ||
3648                NewCriticalLogicalDriveCount != OldCriticalLogicalDriveCount) ||
3649               (NewEnquiry->OfflineLogicalDriveCount > 0 ||
3650                NewEnquiry->OfflineLogicalDriveCount !=
3651                OldEnquiry->OfflineLogicalDriveCount) ||
3652               (NewEnquiry->DeadDriveCount > 0 ||
3653                NewEnquiry->DeadDriveCount !=
3654                OldEnquiry->DeadDriveCount) ||
3655               (NewEnquiry->EventLogSequenceNumber !=
3656                OldEnquiry->EventLogSequenceNumber) ||
3657               Controller->MonitoringTimerCount == 0 ||
3658               time_after_eq(jiffies, Controller->SecondaryMonitoringTime
3659                + DAC960_SecondaryMonitoringInterval))
3660             {
3661               Controller->V1.NeedLogicalDriveInformation = true;
3662               Controller->V1.NewEventLogSequenceNumber =
3663                 NewEnquiry->EventLogSequenceNumber;
3664               Controller->V1.NeedErrorTableInformation = true;
3665               Controller->V1.NeedDeviceStateInformation = true;
3666               Controller->V1.StartDeviceStateScan = true;
3667               Controller->V1.NeedBackgroundInitializationStatus =
3668                 Controller->V1.BackgroundInitializationStatusSupported;
3669               Controller->SecondaryMonitoringTime = jiffies;
3670             }
3671           if (NewEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
3672               NewEnquiry->RebuildFlag
3673               == DAC960_V1_BackgroundRebuildInProgress ||
3674               OldEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
3675               OldEnquiry->RebuildFlag == DAC960_V1_BackgroundRebuildInProgress)
3676             {
3677               Controller->V1.NeedRebuildProgress = true;
3678               Controller->V1.RebuildProgressFirst =
3679                 (NewEnquiry->CriticalLogicalDriveCount <
3680                  OldEnquiry->CriticalLogicalDriveCount);
3681             }
3682           if (OldEnquiry->RebuildFlag == DAC960_V1_BackgroundCheckInProgress)
3683             switch (NewEnquiry->RebuildFlag)
3684               {
3685               case DAC960_V1_NoStandbyRebuildOrCheckInProgress:
3686                 DAC960_Progress("Consistency Check Completed Successfully\n",
3687                                 Controller);
3688                 break;
3689               case DAC960_V1_StandbyRebuildInProgress:
3690               case DAC960_V1_BackgroundRebuildInProgress:
3691                 break;
3692               case DAC960_V1_BackgroundCheckInProgress:
3693                 Controller->V1.NeedConsistencyCheckProgress = true;
3694                 break;
3695               case DAC960_V1_StandbyRebuildCompletedWithError:
3696                 DAC960_Progress("Consistency Check Completed with Error\n",
3697                                 Controller);
3698                 break;
3699               case DAC960_V1_BackgroundRebuildOrCheckFailed_DriveFailed:
3700                 DAC960_Progress("Consistency Check Failed - "
3701                                 "Physical Device Failed\n", Controller);
3702                 break;
3703               case DAC960_V1_BackgroundRebuildOrCheckFailed_LogicalDriveFailed:
3704                 DAC960_Progress("Consistency Check Failed - "
3705                                 "Logical Drive Failed\n", Controller);
3706                 break;
3707               case DAC960_V1_BackgroundRebuildOrCheckFailed_OtherCauses:
3708                 DAC960_Progress("Consistency Check Failed - Other Causes\n",
3709                                 Controller);
3710                 break;
3711               case DAC960_V1_BackgroundRebuildOrCheckSuccessfullyTerminated:
3712                 DAC960_Progress("Consistency Check Successfully Terminated\n",
3713                                 Controller);
3714                 break;
3715               }
3716           else if (NewEnquiry->RebuildFlag
3717                    == DAC960_V1_BackgroundCheckInProgress)
3718             Controller->V1.NeedConsistencyCheckProgress = true;
3719           Controller->MonitoringAlertMode =
3720             (NewEnquiry->CriticalLogicalDriveCount > 0 ||
3721              NewEnquiry->OfflineLogicalDriveCount > 0 ||
3722              NewEnquiry->DeadDriveCount > 0);
3723           if (NewEnquiry->RebuildFlag > DAC960_V1_BackgroundCheckInProgress)
3724             {
3725               Controller->V1.PendingRebuildFlag = NewEnquiry->RebuildFlag;
3726               Controller->V1.RebuildFlagPending = true;
3727             }
3728           memcpy(&Controller->V1.Enquiry, &Controller->V1.NewEnquiry,
3729                  sizeof(DAC960_V1_Enquiry_T));
3730         }
3731       else if (CommandOpcode == DAC960_V1_PerformEventLogOperation)
3732         {
3733           static char
3734             *DAC960_EventMessages[] =
3735                { "killed because write recovery failed",
3736                  "killed because of SCSI bus reset failure",
3737                  "killed because of double check condition",
3738                  "killed because it was removed",
3739                  "killed because of gross error on SCSI chip",
3740                  "killed because of bad tag returned from drive",
3741                  "killed because of timeout on SCSI command",
3742                  "killed because of reset SCSI command issued from system",
3743                  "killed because busy or parity error count exceeded limit",
3744                  "killed because of 'kill drive' command from system",
3745                  "killed because of selection timeout",
3746                  "killed due to SCSI phase sequence error",
3747                  "killed due to unknown status" };
3748           DAC960_V1_EventLogEntry_T *EventLogEntry =
3749                 Controller->V1.EventLogEntry;
3750           if (EventLogEntry->SequenceNumber ==
3751               Controller->V1.OldEventLogSequenceNumber)
3752             {
3753               unsigned char SenseKey = EventLogEntry->SenseKey;
3754               unsigned char AdditionalSenseCode =
3755                 EventLogEntry->AdditionalSenseCode;
3756               unsigned char AdditionalSenseCodeQualifier =
3757                 EventLogEntry->AdditionalSenseCodeQualifier;
3758               if (SenseKey == DAC960_SenseKey_VendorSpecific &&
3759                   AdditionalSenseCode == 0x80 &&
3760                   AdditionalSenseCodeQualifier <
3761                   ARRAY_SIZE(DAC960_EventMessages))
3762                 DAC960_Critical("Physical Device %d:%d %s\n", Controller,
3763                                 EventLogEntry->Channel,
3764                                 EventLogEntry->TargetID,
3765                                 DAC960_EventMessages[
3766                                   AdditionalSenseCodeQualifier]);
3767               else if (SenseKey == DAC960_SenseKey_UnitAttention &&
3768                        AdditionalSenseCode == 0x29)
3769                 {
3770                   if (Controller->MonitoringTimerCount > 0)
3771                     Controller->V1.DeviceResetCount[EventLogEntry->Channel]
3772                                                    [EventLogEntry->TargetID]++;
3773                 }
3774               else if (!(SenseKey == DAC960_SenseKey_NoSense ||
3775                          (SenseKey == DAC960_SenseKey_NotReady &&
3776                           AdditionalSenseCode == 0x04 &&
3777                           (AdditionalSenseCodeQualifier == 0x01 ||
3778                            AdditionalSenseCodeQualifier == 0x02))))
3779                 {
3780                   DAC960_Critical("Physical Device %d:%d Error Log: "
3781                                   "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
3782                                   Controller,
3783                                   EventLogEntry->Channel,
3784                                   EventLogEntry->TargetID,
3785                                   SenseKey,
3786                                   AdditionalSenseCode,
3787                                   AdditionalSenseCodeQualifier);
3788                   DAC960_Critical("Physical Device %d:%d Error Log: "
3789                                   "Information = %02X%02X%02X%02X "
3790                                   "%02X%02X%02X%02X\n",
3791                                   Controller,
3792                                   EventLogEntry->Channel,
3793                                   EventLogEntry->TargetID,
3794                                   EventLogEntry->Information[0],
3795                                   EventLogEntry->Information[1],
3796                                   EventLogEntry->Information[2],
3797                                   EventLogEntry->Information[3],
3798                                   EventLogEntry->CommandSpecificInformation[0],
3799                                   EventLogEntry->CommandSpecificInformation[1],
3800                                   EventLogEntry->CommandSpecificInformation[2],
3801                                   EventLogEntry->CommandSpecificInformation[3]);
3802                 }
3803             }
3804           Controller->V1.OldEventLogSequenceNumber++;
3805         }
3806       else if (CommandOpcode == DAC960_V1_GetErrorTable)
3807         {
3808           DAC960_V1_ErrorTable_T *OldErrorTable = &Controller->V1.ErrorTable;
3809           DAC960_V1_ErrorTable_T *NewErrorTable = Controller->V1.NewErrorTable;
3810           int Channel, TargetID;
3811           for (Channel = 0; Channel < Controller->Channels; Channel++)
3812             for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
3813               {
3814                 DAC960_V1_ErrorTableEntry_T *NewErrorEntry =
3815                   &NewErrorTable->ErrorTableEntries[Channel][TargetID];
3816                 DAC960_V1_ErrorTableEntry_T *OldErrorEntry =
3817                   &OldErrorTable->ErrorTableEntries[Channel][TargetID];
3818                 if ((NewErrorEntry->ParityErrorCount !=
3819                      OldErrorEntry->ParityErrorCount) ||
3820                     (NewErrorEntry->SoftErrorCount !=
3821                      OldErrorEntry->SoftErrorCount) ||
3822                     (NewErrorEntry->HardErrorCount !=
3823                      OldErrorEntry->HardErrorCount) ||
3824                     (NewErrorEntry->MiscErrorCount !=
3825                      OldErrorEntry->MiscErrorCount))
3826                   DAC960_Critical("Physical Device %d:%d Errors: "
3827                                   "Parity = %d, Soft = %d, "
3828                                   "Hard = %d, Misc = %d\n",
3829                                   Controller, Channel, TargetID,
3830                                   NewErrorEntry->ParityErrorCount,
3831                                   NewErrorEntry->SoftErrorCount,
3832                                   NewErrorEntry->HardErrorCount,
3833                                   NewErrorEntry->MiscErrorCount);
3834               }
3835           memcpy(&Controller->V1.ErrorTable, Controller->V1.NewErrorTable,
3836                  sizeof(DAC960_V1_ErrorTable_T));
3837         }
3838       else if (CommandOpcode == DAC960_V1_GetDeviceState)
3839         {
3840           DAC960_V1_DeviceState_T *OldDeviceState =
3841             &Controller->V1.DeviceState[Controller->V1.DeviceStateChannel]
3842                                        [Controller->V1.DeviceStateTargetID];
3843           DAC960_V1_DeviceState_T *NewDeviceState =
3844             Controller->V1.NewDeviceState;
3845           if (NewDeviceState->DeviceState != OldDeviceState->DeviceState)
3846             DAC960_Critical("Physical Device %d:%d is now %s\n", Controller,
3847                             Controller->V1.DeviceStateChannel,
3848                             Controller->V1.DeviceStateTargetID,
3849                             (NewDeviceState->DeviceState
3850                              == DAC960_V1_Device_Dead
3851                              ? "DEAD"
3852                              : NewDeviceState->DeviceState
3853                                == DAC960_V1_Device_WriteOnly
3854                                ? "WRITE-ONLY"
3855                                : NewDeviceState->DeviceState
3856                                  == DAC960_V1_Device_Online
3857                                  ? "ONLINE" : "STANDBY"));
3858           if (OldDeviceState->DeviceState == DAC960_V1_Device_Dead &&
3859               NewDeviceState->DeviceState != DAC960_V1_Device_Dead)
3860             {
3861               Controller->V1.NeedDeviceInquiryInformation = true;
3862               Controller->V1.NeedDeviceSerialNumberInformation = true;
3863               Controller->V1.DeviceResetCount
3864                              [Controller->V1.DeviceStateChannel]
3865                              [Controller->V1.DeviceStateTargetID] = 0;
3866             }
3867           memcpy(OldDeviceState, NewDeviceState,
3868                  sizeof(DAC960_V1_DeviceState_T));
3869         }
3870       else if (CommandOpcode == DAC960_V1_GetLogicalDriveInformation)
3871         {
3872           int LogicalDriveNumber;
3873           for (LogicalDriveNumber = 0;
3874                LogicalDriveNumber < Controller->LogicalDriveCount;
3875                LogicalDriveNumber++)
3876             {
3877               DAC960_V1_LogicalDriveInformation_T *OldLogicalDriveInformation =
3878                 &Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
3879               DAC960_V1_LogicalDriveInformation_T *NewLogicalDriveInformation =
3880                 &(*Controller->V1.NewLogicalDriveInformation)[LogicalDriveNumber];
3881               if (NewLogicalDriveInformation->LogicalDriveState !=
3882                   OldLogicalDriveInformation->LogicalDriveState)
3883                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3884                                 "is now %s\n", Controller,
3885                                 LogicalDriveNumber,
3886                                 Controller->ControllerNumber,
3887                                 LogicalDriveNumber,
3888                                 (NewLogicalDriveInformation->LogicalDriveState
3889                                  == DAC960_V1_LogicalDrive_Online
3890                                  ? "ONLINE"
3891                                  : NewLogicalDriveInformation->LogicalDriveState
3892                                    == DAC960_V1_LogicalDrive_Critical
3893                                    ? "CRITICAL" : "OFFLINE"));
3894               if (NewLogicalDriveInformation->WriteBack !=
3895                   OldLogicalDriveInformation->WriteBack)
3896                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3897                                 "is now %s\n", Controller,
3898                                 LogicalDriveNumber,
3899                                 Controller->ControllerNumber,
3900                                 LogicalDriveNumber,
3901                                 (NewLogicalDriveInformation->WriteBack
3902                                  ? "WRITE BACK" : "WRITE THRU"));
3903             }
3904           memcpy(&Controller->V1.LogicalDriveInformation,
3905                  Controller->V1.NewLogicalDriveInformation,
3906                  sizeof(DAC960_V1_LogicalDriveInformationArray_T));
3907         }
3908       else if (CommandOpcode == DAC960_V1_GetRebuildProgress)
3909         {
3910           unsigned int LogicalDriveNumber =
3911             Controller->V1.RebuildProgress->LogicalDriveNumber;
3912           unsigned int LogicalDriveSize =
3913             Controller->V1.RebuildProgress->LogicalDriveSize;
3914           unsigned int BlocksCompleted =
3915             LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
3916           if (CommandStatus == DAC960_V1_NoRebuildOrCheckInProgress &&
3917               Controller->V1.LastRebuildStatus == DAC960_V1_NormalCompletion)
3918             CommandStatus = DAC960_V1_RebuildSuccessful;
3919           switch (CommandStatus)
3920             {
3921             case DAC960_V1_NormalCompletion:
3922               Controller->EphemeralProgressMessage = true;
3923               DAC960_Progress("Rebuild in Progress: "
3924                               "Logical Drive %d (/dev/rd/c%dd%d) "
3925                               "%d%% completed\n",
3926                               Controller, LogicalDriveNumber,
3927                               Controller->ControllerNumber,
3928                               LogicalDriveNumber,
3929                               (100 * (BlocksCompleted >> 7))
3930                               / (LogicalDriveSize >> 7));
3931               Controller->EphemeralProgressMessage = false;
3932               break;
3933             case DAC960_V1_RebuildFailed_LogicalDriveFailure:
3934               DAC960_Progress("Rebuild Failed due to "
3935                               "Logical Drive Failure\n", Controller);
3936               break;
3937             case DAC960_V1_RebuildFailed_BadBlocksOnOther:
3938               DAC960_Progress("Rebuild Failed due to "
3939                               "Bad Blocks on Other Drives\n", Controller);
3940               break;
3941             case DAC960_V1_RebuildFailed_NewDriveFailed:
3942               DAC960_Progress("Rebuild Failed due to "
3943                               "Failure of Drive Being Rebuilt\n", Controller);
3944               break;
3945             case DAC960_V1_NoRebuildOrCheckInProgress:
3946               break;
3947             case DAC960_V1_RebuildSuccessful:
3948               DAC960_Progress("Rebuild Completed Successfully\n", Controller);
3949               break;
3950             case DAC960_V1_RebuildSuccessfullyTerminated:
3951               DAC960_Progress("Rebuild Successfully Terminated\n", Controller);
3952               break;
3953             }
3954           Controller->V1.LastRebuildStatus = CommandStatus;
3955           if (CommandType != DAC960_MonitoringCommand &&
3956               Controller->V1.RebuildStatusPending)
3957             {
3958               Command->V1.CommandStatus = Controller->V1.PendingRebuildStatus;
3959               Controller->V1.RebuildStatusPending = false;
3960             }
3961           else if (CommandType == DAC960_MonitoringCommand &&
3962                    CommandStatus != DAC960_V1_NormalCompletion &&
3963                    CommandStatus != DAC960_V1_NoRebuildOrCheckInProgress)
3964             {
3965               Controller->V1.PendingRebuildStatus = CommandStatus;
3966               Controller->V1.RebuildStatusPending = true;
3967             }
3968         }
3969       else if (CommandOpcode == DAC960_V1_RebuildStat)
3970         {
3971           unsigned int LogicalDriveNumber =
3972             Controller->V1.RebuildProgress->LogicalDriveNumber;
3973           unsigned int LogicalDriveSize =
3974             Controller->V1.RebuildProgress->LogicalDriveSize;
3975           unsigned int BlocksCompleted =
3976             LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
3977           if (CommandStatus == DAC960_V1_NormalCompletion)
3978             {
3979               Controller->EphemeralProgressMessage = true;
3980               DAC960_Progress("Consistency Check in Progress: "
3981                               "Logical Drive %d (/dev/rd/c%dd%d) "
3982                               "%d%% completed\n",
3983                               Controller, LogicalDriveNumber,
3984                               Controller->ControllerNumber,
3985                               LogicalDriveNumber,
3986                               (100 * (BlocksCompleted >> 7))
3987                               / (LogicalDriveSize >> 7));
3988               Controller->EphemeralProgressMessage = false;
3989             }
3990         }
3991       else if (CommandOpcode == DAC960_V1_BackgroundInitializationControl)
3992         {
3993           unsigned int LogicalDriveNumber =
3994             Controller->V1.BackgroundInitializationStatus->LogicalDriveNumber;
3995           unsigned int LogicalDriveSize =
3996             Controller->V1.BackgroundInitializationStatus->LogicalDriveSize;
3997           unsigned int BlocksCompleted =
3998             Controller->V1.BackgroundInitializationStatus->BlocksCompleted;
3999           switch (CommandStatus)
4000             {
4001             case DAC960_V1_NormalCompletion:
4002               switch (Controller->V1.BackgroundInitializationStatus->Status)
4003                 {
4004                 case DAC960_V1_BackgroundInitializationInvalid:
4005                   break;
4006                 case DAC960_V1_BackgroundInitializationStarted:
4007                   DAC960_Progress("Background Initialization Started\n",
4008                                   Controller);
4009                   break;
4010                 case DAC960_V1_BackgroundInitializationInProgress:
4011                   if (BlocksCompleted ==
4012                       Controller->V1.LastBackgroundInitializationStatus.
4013                                 BlocksCompleted &&
4014                       LogicalDriveNumber ==
4015                       Controller->V1.LastBackgroundInitializationStatus.
4016                                 LogicalDriveNumber)
4017                     break;
4018                   Controller->EphemeralProgressMessage = true;
4019                   DAC960_Progress("Background Initialization in Progress: "
4020                                   "Logical Drive %d (/dev/rd/c%dd%d) "
4021                                   "%d%% completed\n",
4022                                   Controller, LogicalDriveNumber,
4023                                   Controller->ControllerNumber,
4024                                   LogicalDriveNumber,
4025                                   (100 * (BlocksCompleted >> 7))
4026                                   / (LogicalDriveSize >> 7));
4027                   Controller->EphemeralProgressMessage = false;
4028                   break;
4029                 case DAC960_V1_BackgroundInitializationSuspended:
4030                   DAC960_Progress("Background Initialization Suspended\n",
4031                                   Controller);
4032                   break;
4033                 case DAC960_V1_BackgroundInitializationCancelled:
4034                   DAC960_Progress("Background Initialization Cancelled\n",
4035                                   Controller);
4036                   break;
4037                 }
4038               memcpy(&Controller->V1.LastBackgroundInitializationStatus,
4039                      Controller->V1.BackgroundInitializationStatus,
4040                      sizeof(DAC960_V1_BackgroundInitializationStatus_T));
4041               break;
4042             case DAC960_V1_BackgroundInitSuccessful:
4043               if (Controller->V1.BackgroundInitializationStatus->Status ==
4044                   DAC960_V1_BackgroundInitializationInProgress)
4045                 DAC960_Progress("Background Initialization "
4046                                 "Completed Successfully\n", Controller);
4047               Controller->V1.BackgroundInitializationStatus->Status =
4048                 DAC960_V1_BackgroundInitializationInvalid;
4049               break;
4050             case DAC960_V1_BackgroundInitAborted:
4051               if (Controller->V1.BackgroundInitializationStatus->Status ==
4052                   DAC960_V1_BackgroundInitializationInProgress)
4053                 DAC960_Progress("Background Initialization Aborted\n",
4054                                 Controller);
4055               Controller->V1.BackgroundInitializationStatus->Status =
4056                 DAC960_V1_BackgroundInitializationInvalid;
4057               break;
4058             case DAC960_V1_NoBackgroundInitInProgress:
4059               break;
4060             }
4061         }
4062       else if (CommandOpcode == DAC960_V1_DCDB)
4063         {
4064            /*
4065              This is a bit ugly.
4066
4067              The InquiryStandardData and
4068              the InquiryUntitSerialNumber information
4069              retrieval operations BOTH use the DAC960_V1_DCDB
4070              commands.  the test above can't distinguish between
4071              these two cases.
4072
4073              Instead, we rely on the order of code later in this
4074              function to ensure that DeviceInquiryInformation commands
4075              are submitted before DeviceSerialNumber commands.
4076            */
4077            if (Controller->V1.NeedDeviceInquiryInformation)
4078              {
4079                 DAC960_SCSI_Inquiry_T *InquiryStandardData =
4080                         &Controller->V1.InquiryStandardData
4081                                 [Controller->V1.DeviceStateChannel]
4082                                 [Controller->V1.DeviceStateTargetID];
4083                 if (CommandStatus != DAC960_V1_NormalCompletion)
4084                    {
4085                         memset(InquiryStandardData, 0,
4086                                 sizeof(DAC960_SCSI_Inquiry_T));
4087                         InquiryStandardData->PeripheralDeviceType = 0x1F;
4088                     }
4089                  else
4090                         memcpy(InquiryStandardData,
4091                                 Controller->V1.NewInquiryStandardData,
4092                                 sizeof(DAC960_SCSI_Inquiry_T));
4093                  Controller->V1.NeedDeviceInquiryInformation = false;
4094               }
4095            else if (Controller->V1.NeedDeviceSerialNumberInformation)
4096               {
4097                 DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4098                   &Controller->V1.InquiryUnitSerialNumber
4099                                 [Controller->V1.DeviceStateChannel]
4100                                 [Controller->V1.DeviceStateTargetID];
4101                  if (CommandStatus != DAC960_V1_NormalCompletion)
4102                    {
4103                         memset(InquiryUnitSerialNumber, 0,
4104                                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4105                         InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
4106                     }
4107                   else
4108                         memcpy(InquiryUnitSerialNumber,
4109                                 Controller->V1.NewInquiryUnitSerialNumber,
4110                                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4111               Controller->V1.NeedDeviceSerialNumberInformation = false;
4112              }
4113         }
4114       /*
4115         Begin submitting new monitoring commands.
4116        */
4117       if (Controller->V1.NewEventLogSequenceNumber
4118           - Controller->V1.OldEventLogSequenceNumber > 0)
4119         {
4120           Command->V1.CommandMailbox.Type3E.CommandOpcode =
4121             DAC960_V1_PerformEventLogOperation;
4122           Command->V1.CommandMailbox.Type3E.OperationType =
4123             DAC960_V1_GetEventLogEntry;
4124           Command->V1.CommandMailbox.Type3E.OperationQualifier = 1;
4125           Command->V1.CommandMailbox.Type3E.SequenceNumber =
4126             Controller->V1.OldEventLogSequenceNumber;
4127           Command->V1.CommandMailbox.Type3E.BusAddress =
4128                 Controller->V1.EventLogEntryDMA;
4129           DAC960_QueueCommand(Command);
4130           return;
4131         }
4132       if (Controller->V1.NeedErrorTableInformation)
4133         {
4134           Controller->V1.NeedErrorTableInformation = false;
4135           Command->V1.CommandMailbox.Type3.CommandOpcode =
4136             DAC960_V1_GetErrorTable;
4137           Command->V1.CommandMailbox.Type3.BusAddress =
4138                 Controller->V1.NewErrorTableDMA;
4139           DAC960_QueueCommand(Command);
4140           return;
4141         }
4142       if (Controller->V1.NeedRebuildProgress &&
4143           Controller->V1.RebuildProgressFirst)
4144         {
4145           Controller->V1.NeedRebuildProgress = false;
4146           Command->V1.CommandMailbox.Type3.CommandOpcode =
4147             DAC960_V1_GetRebuildProgress;
4148           Command->V1.CommandMailbox.Type3.BusAddress =
4149             Controller->V1.RebuildProgressDMA;
4150           DAC960_QueueCommand(Command);
4151           return;
4152         }
4153       if (Controller->V1.NeedDeviceStateInformation)
4154         {
4155           if (Controller->V1.NeedDeviceInquiryInformation)
4156             {
4157               DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
4158               dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
4159
4160               dma_addr_t NewInquiryStandardDataDMA =
4161                 Controller->V1.NewInquiryStandardDataDMA;
4162
4163               Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
4164               Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
4165               DCDB->Channel = Controller->V1.DeviceStateChannel;
4166               DCDB->TargetID = Controller->V1.DeviceStateTargetID;
4167               DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
4168               DCDB->EarlyStatus = false;
4169               DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
4170               DCDB->NoAutomaticRequestSense = false;
4171               DCDB->DisconnectPermitted = true;
4172               DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
4173               DCDB->BusAddress = NewInquiryStandardDataDMA;
4174               DCDB->CDBLength = 6;
4175               DCDB->TransferLengthHigh4 = 0;
4176               DCDB->SenseLength = sizeof(DCDB->SenseData);
4177               DCDB->CDB[0] = 0x12; /* INQUIRY */
4178               DCDB->CDB[1] = 0; /* EVPD = 0 */
4179               DCDB->CDB[2] = 0; /* Page Code */
4180               DCDB->CDB[3] = 0; /* Reserved */
4181               DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
4182               DCDB->CDB[5] = 0; /* Control */
4183               DAC960_QueueCommand(Command);
4184               return;
4185             }
4186           if (Controller->V1.NeedDeviceSerialNumberInformation)
4187             {
4188               DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
4189               dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
4190               dma_addr_t NewInquiryUnitSerialNumberDMA =
4191                         Controller->V1.NewInquiryUnitSerialNumberDMA;
4192
4193               Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
4194               Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
4195               DCDB->Channel = Controller->V1.DeviceStateChannel;
4196               DCDB->TargetID = Controller->V1.DeviceStateTargetID;
4197               DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
4198               DCDB->EarlyStatus = false;
4199               DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
4200               DCDB->NoAutomaticRequestSense = false;
4201               DCDB->DisconnectPermitted = true;
4202               DCDB->TransferLength =
4203                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
4204               DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
4205               DCDB->CDBLength = 6;
4206               DCDB->TransferLengthHigh4 = 0;
4207               DCDB->SenseLength = sizeof(DCDB->SenseData);
4208               DCDB->CDB[0] = 0x12; /* INQUIRY */
4209               DCDB->CDB[1] = 1; /* EVPD = 1 */
4210               DCDB->CDB[2] = 0x80; /* Page Code */
4211               DCDB->CDB[3] = 0; /* Reserved */
4212               DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
4213               DCDB->CDB[5] = 0; /* Control */
4214               DAC960_QueueCommand(Command);
4215               return;
4216             }
4217           if (Controller->V1.StartDeviceStateScan)
4218             {
4219               Controller->V1.DeviceStateChannel = 0;
4220               Controller->V1.DeviceStateTargetID = 0;
4221               Controller->V1.StartDeviceStateScan = false;
4222             }
4223           else if (++Controller->V1.DeviceStateTargetID == Controller->Targets)
4224             {
4225               Controller->V1.DeviceStateChannel++;
4226               Controller->V1.DeviceStateTargetID = 0;
4227             }
4228           if (Controller->V1.DeviceStateChannel < Controller->Channels)
4229             {
4230               Controller->V1.NewDeviceState->DeviceState =
4231                 DAC960_V1_Device_Dead;
4232               Command->V1.CommandMailbox.Type3D.CommandOpcode =
4233                 DAC960_V1_GetDeviceState;
4234               Command->V1.CommandMailbox.Type3D.Channel =
4235                 Controller->V1.DeviceStateChannel;
4236               Command->V1.CommandMailbox.Type3D.TargetID =
4237                 Controller->V1.DeviceStateTargetID;
4238               Command->V1.CommandMailbox.Type3D.BusAddress =
4239                 Controller->V1.NewDeviceStateDMA;
4240               DAC960_QueueCommand(Command);
4241               return;
4242             }
4243           Controller->V1.NeedDeviceStateInformation = false;
4244         }
4245       if (Controller->V1.NeedLogicalDriveInformation)
4246         {
4247           Controller->V1.NeedLogicalDriveInformation = false;
4248           Command->V1.CommandMailbox.Type3.CommandOpcode =
4249             DAC960_V1_GetLogicalDriveInformation;
4250           Command->V1.CommandMailbox.Type3.BusAddress =
4251             Controller->V1.NewLogicalDriveInformationDMA;
4252           DAC960_QueueCommand(Command);
4253           return;
4254         }
4255       if (Controller->V1.NeedRebuildProgress)
4256         {
4257           Controller->V1.NeedRebuildProgress = false;
4258           Command->V1.CommandMailbox.Type3.CommandOpcode =
4259             DAC960_V1_GetRebuildProgress;
4260           Command->V1.CommandMailbox.Type3.BusAddress =
4261                 Controller->V1.RebuildProgressDMA;
4262           DAC960_QueueCommand(Command);
4263           return;
4264         }
4265       if (Controller->V1.NeedConsistencyCheckProgress)
4266         {
4267           Controller->V1.NeedConsistencyCheckProgress = false;
4268           Command->V1.CommandMailbox.Type3.CommandOpcode =
4269             DAC960_V1_RebuildStat;
4270           Command->V1.CommandMailbox.Type3.BusAddress =
4271             Controller->V1.RebuildProgressDMA;
4272           DAC960_QueueCommand(Command);
4273           return;
4274         }
4275       if (Controller->V1.NeedBackgroundInitializationStatus)
4276         {
4277           Controller->V1.NeedBackgroundInitializationStatus = false;
4278           Command->V1.CommandMailbox.Type3B.CommandOpcode =
4279             DAC960_V1_BackgroundInitializationControl;
4280           Command->V1.CommandMailbox.Type3B.CommandOpcode2 = 0x20;
4281           Command->V1.CommandMailbox.Type3B.BusAddress =
4282             Controller->V1.BackgroundInitializationStatusDMA;
4283           DAC960_QueueCommand(Command);
4284           return;
4285         }
4286       Controller->MonitoringTimerCount++;
4287       Controller->MonitoringTimer.expires =
4288         jiffies + DAC960_MonitoringTimerInterval;
4289         add_timer(&Controller->MonitoringTimer);
4290     }
4291   if (CommandType == DAC960_ImmediateCommand)
4292     {
4293       complete(Command->Completion);
4294       Command->Completion = NULL;
4295       return;
4296     }
4297   if (CommandType == DAC960_QueuedCommand)
4298     {
4299       DAC960_V1_KernelCommand_T *KernelCommand = Command->V1.KernelCommand;
4300       KernelCommand->CommandStatus = Command->V1.CommandStatus;
4301       Command->V1.KernelCommand = NULL;
4302       if (CommandOpcode == DAC960_V1_DCDB)
4303         Controller->V1.DirectCommandActive[KernelCommand->DCDB->Channel]
4304                                           [KernelCommand->DCDB->TargetID] =
4305           false;
4306       DAC960_DeallocateCommand(Command);
4307       KernelCommand->CompletionFunction(KernelCommand);
4308       return;
4309     }
4310   /*
4311     Queue a Status Monitoring Command to the Controller using the just
4312     completed Command if one was deferred previously due to lack of a
4313     free Command when the Monitoring Timer Function was called.
4314   */
4315   if (Controller->MonitoringCommandDeferred)
4316     {
4317       Controller->MonitoringCommandDeferred = false;
4318       DAC960_V1_QueueMonitoringCommand(Command);
4319       return;
4320     }
4321   /*
4322     Deallocate the Command.
4323   */
4324   DAC960_DeallocateCommand(Command);
4325   /*
4326     Wake up any processes waiting on a free Command.
4327   */
4328   wake_up(&Controller->CommandWaitQueue);
4329 }
4330
4331
4332 /*
4333   DAC960_V2_ReadWriteError prints an appropriate error message for Command
4334   when an error occurs on a Read or Write operation.
4335 */
4336
4337 static void DAC960_V2_ReadWriteError(DAC960_Command_T *Command)
4338 {
4339   DAC960_Controller_T *Controller = Command->Controller;
4340   unsigned char *SenseErrors[] = { "NO SENSE", "RECOVERED ERROR",
4341                                    "NOT READY", "MEDIUM ERROR",
4342                                    "HARDWARE ERROR", "ILLEGAL REQUEST",
4343                                    "UNIT ATTENTION", "DATA PROTECT",
4344                                    "BLANK CHECK", "VENDOR-SPECIFIC",
4345                                    "COPY ABORTED", "ABORTED COMMAND",
4346                                    "EQUAL", "VOLUME OVERFLOW",
4347                                    "MISCOMPARE", "RESERVED" };
4348   unsigned char *CommandName = "UNKNOWN";
4349   switch (Command->CommandType)
4350     {
4351     case DAC960_ReadCommand:
4352     case DAC960_ReadRetryCommand:
4353       CommandName = "READ";
4354       break;
4355     case DAC960_WriteCommand:
4356     case DAC960_WriteRetryCommand:
4357       CommandName = "WRITE";
4358       break;
4359     case DAC960_MonitoringCommand:
4360     case DAC960_ImmediateCommand:
4361     case DAC960_QueuedCommand:
4362       break;
4363     }
4364   DAC960_Error("Error Condition %s on %s:\n", Controller,
4365                SenseErrors[Command->V2.RequestSense->SenseKey], CommandName);
4366   DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
4367                Controller, Controller->ControllerNumber,
4368                Command->LogicalDriveNumber, Command->BlockNumber,
4369                Command->BlockNumber + Command->BlockCount - 1);
4370 }
4371
4372
4373 /*
4374   DAC960_V2_ReportEvent prints an appropriate message when a Controller Event
4375   occurs.
4376 */
4377
4378 static void DAC960_V2_ReportEvent(DAC960_Controller_T *Controller,
4379                                   DAC960_V2_Event_T *Event)
4380 {
4381   DAC960_SCSI_RequestSense_T *RequestSense =
4382     (DAC960_SCSI_RequestSense_T *) &Event->RequestSenseData;
4383   unsigned char MessageBuffer[DAC960_LineBufferSize];
4384   static struct { int EventCode; unsigned char *EventMessage; } EventList[] =
4385     { /* Physical Device Events (0x0000 - 0x007F) */
4386       { 0x0001, "P Online" },
4387       { 0x0002, "P Standby" },
4388       { 0x0005, "P Automatic Rebuild Started" },
4389       { 0x0006, "P Manual Rebuild Started" },
4390       { 0x0007, "P Rebuild Completed" },
4391       { 0x0008, "P Rebuild Cancelled" },
4392       { 0x0009, "P Rebuild Failed for Unknown Reasons" },
4393       { 0x000A, "P Rebuild Failed due to New Physical Device" },
4394       { 0x000B, "P Rebuild Failed due to Logical Drive Failure" },
4395       { 0x000C, "S Offline" },
4396       { 0x000D, "P Found" },
4397       { 0x000E, "P Removed" },
4398       { 0x000F, "P Unconfigured" },
4399       { 0x0010, "P Expand Capacity Started" },
4400       { 0x0011, "P Expand Capacity Completed" },
4401       { 0x0012, "P Expand Capacity Failed" },
4402       { 0x0013, "P Command Timed Out" },
4403       { 0x0014, "P Command Aborted" },
4404       { 0x0015, "P Command Retried" },
4405       { 0x0016, "P Parity Error" },
4406       { 0x0017, "P Soft Error" },
4407       { 0x0018, "P Miscellaneous Error" },
4408       { 0x0019, "P Reset" },
4409       { 0x001A, "P Active Spare Found" },
4410       { 0x001B, "P Warm Spare Found" },
4411       { 0x001C, "S Sense Data Received" },
4412       { 0x001D, "P Initialization Started" },
4413       { 0x001E, "P Initialization Completed" },
4414       { 0x001F, "P Initialization Failed" },
4415       { 0x0020, "P Initialization Cancelled" },
4416       { 0x0021, "P Failed because Write Recovery Failed" },
4417       { 0x0022, "P Failed because SCSI Bus Reset Failed" },
4418       { 0x0023, "P Failed because of Double Check Condition" },
4419       { 0x0024, "P Failed because Device Cannot Be Accessed" },
4420       { 0x0025, "P Failed because of Gross Error on SCSI Processor" },
4421       { 0x0026, "P Failed because of Bad Tag from Device" },
4422       { 0x0027, "P Failed because of Command Timeout" },
4423       { 0x0028, "P Failed because of System Reset" },
4424       { 0x0029, "P Failed because of Busy Status or Parity Error" },
4425       { 0x002A, "P Failed because Host Set Device to Failed State" },
4426       { 0x002B, "P Failed because of Selection Timeout" },
4427       { 0x002C, "P Failed because of SCSI Bus Phase Error" },
4428       { 0x002D, "P Failed because Device Returned Unknown Status" },
4429       { 0x002E, "P Failed because Device Not Ready" },
4430       { 0x002F, "P Failed because Device Not Found at Startup" },
4431       { 0x0030, "P Failed because COD Write Operation Failed" },
4432       { 0x0031, "P Failed because BDT Write Operation Failed" },
4433       { 0x0039, "P Missing at Startup" },
4434       { 0x003A, "P Start Rebuild Failed due to Physical Drive Too Small" },
4435       { 0x003C, "P Temporarily Offline Device Automatically Made Online" },
4436       { 0x003D, "P Standby Rebuild Started" },
4437       /* Logical Device Events (0x0080 - 0x00FF) */
4438       { 0x0080, "M Consistency Check Started" },
4439       { 0x0081, "M Consistency Check Completed" },
4440       { 0x0082, "M Consistency Check Cancelled" },
4441       { 0x0083, "M Consistency Check Completed With Errors" },
4442       { 0x0084, "M Consistency Check Failed due to Logical Drive Failure" },
4443       { 0x0085, "M Consistency Check Failed due to Physical Device Failure" },
4444       { 0x0086, "L Offline" },
4445       { 0x0087, "L Critical" },
4446       { 0x0088, "L Online" },
4447       { 0x0089, "M Automatic Rebuild Started" },
4448       { 0x008A, "M Manual Rebuild Started" },
4449       { 0x008B, "M Rebuild Completed" },
4450       { 0x008C, "M Rebuild Cancelled" },
4451       { 0x008D, "M Rebuild Failed for Unknown Reasons" },
4452       { 0x008E, "M Rebuild Failed due to New Physical Device" },
4453       { 0x008F, "M Rebuild Failed due to Logical Drive Failure" },
4454       { 0x0090, "M Initialization Started" },
4455       { 0x0091, "M Initialization Completed" },
4456       { 0x0092, "M Initialization Cancelled" },
4457       { 0x0093, "M Initialization Failed" },
4458       { 0x0094, "L Found" },
4459       { 0x0095, "L Deleted" },
4460       { 0x0096, "M Expand Capacity Started" },
4461       { 0x0097, "M Expand Capacity Completed" },
4462       { 0x0098, "M Expand Capacity Failed" },
4463       { 0x0099, "L Bad Block Found" },
4464       { 0x009A, "L Size Changed" },
4465       { 0x009B, "L Type Changed" },
4466       { 0x009C, "L Bad Data Block Found" },
4467       { 0x009E, "L Read of Data Block in BDT" },
4468       { 0x009F, "L Write Back Data for Disk Block Lost" },
4469       { 0x00A0, "L Temporarily Offline RAID-5/3 Drive Made Online" },
4470       { 0x00A1, "L Temporarily Offline RAID-6/1/0/7 Drive Made Online" },
4471       { 0x00A2, "L Standby Rebuild Started" },
4472       /* Fault Management Events (0x0100 - 0x017F) */
4473       { 0x0140, "E Fan %d Failed" },
4474       { 0x0141, "E Fan %d OK" },
4475       { 0x0142, "E Fan %d Not Present" },
4476       { 0x0143, "E Power Supply %d Failed" },
4477       { 0x0144, "E Power Supply %d OK" },
4478       { 0x0145, "E Power Supply %d Not Present" },
4479       { 0x0146, "E Temperature Sensor %d Temperature Exceeds Safe Limit" },
4480       { 0x0147, "E Temperature Sensor %d Temperature Exceeds Working Limit" },
4481       { 0x0148, "E Temperature Sensor %d Temperature Normal" },
4482       { 0x0149, "E Temperature Sensor %d Not Present" },
4483       { 0x014A, "E Enclosure Management Unit %d Access Critical" },
4484       { 0x014B, "E Enclosure Management Unit %d Access OK" },
4485       { 0x014C, "E Enclosure Management Unit %d Access Offline" },
4486       /* Controller Events (0x0180 - 0x01FF) */
4487       { 0x0181, "C Cache Write Back Error" },
4488       { 0x0188, "C Battery Backup Unit Found" },
4489       { 0x0189, "C Battery Backup Unit Charge Level Low" },
4490       { 0x018A, "C Battery Backup Unit Charge Level OK" },
4491       { 0x0193, "C Installation Aborted" },
4492       { 0x0195, "C Battery Backup Unit Physically Removed" },
4493       { 0x0196, "C Memory Error During Warm Boot" },
4494       { 0x019E, "C Memory Soft ECC Error Corrected" },
4495       { 0x019F, "C Memory Hard ECC Error Corrected" },
4496       { 0x01A2, "C Battery Backup Unit Failed" },
4497       { 0x01AB, "C Mirror Race Recovery Failed" },
4498       { 0x01AC, "C Mirror Race on Critical Drive" },
4499       /* Controller Internal Processor Events */
4500       { 0x0380, "C Internal Controller Hung" },
4501       { 0x0381, "C Internal Controller Firmware Breakpoint" },
4502       { 0x0390, "C Internal Controller i960 Processor Specific Error" },
4503       { 0x03A0, "C Internal Controller StrongARM Processor Specific Error" },
4504       { 0, "" } };
4505   int EventListIndex = 0, EventCode;
4506   unsigned char EventType, *EventMessage;
4507   if (Event->EventCode == 0x1C &&
4508       RequestSense->SenseKey == DAC960_SenseKey_VendorSpecific &&
4509       (RequestSense->AdditionalSenseCode == 0x80 ||
4510        RequestSense->AdditionalSenseCode == 0x81))
4511     Event->EventCode = ((RequestSense->AdditionalSenseCode - 0x80) << 8) |
4512                        RequestSense->AdditionalSenseCodeQualifier;
4513   while (true)
4514     {
4515       EventCode = EventList[EventListIndex].EventCode;
4516       if (EventCode == Event->EventCode || EventCode == 0) break;
4517       EventListIndex++;
4518     }
4519   EventType = EventList[EventListIndex].EventMessage[0];
4520   EventMessage = &EventList[EventListIndex].EventMessage[2];
4521   if (EventCode == 0)
4522     {
4523       DAC960_Critical("Unknown Controller Event Code %04X\n",
4524                       Controller, Event->EventCode);
4525       return;
4526     }
4527   switch (EventType)
4528     {
4529     case 'P':
4530       DAC960_Critical("Physical Device %d:%d %s\n", Controller,
4531                       Event->Channel, Event->TargetID, EventMessage);
4532       break;
4533     case 'L':
4534       DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
4535                       Event->LogicalUnit, Controller->ControllerNumber,
4536                       Event->LogicalUnit, EventMessage);
4537       break;
4538     case 'M':
4539       DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
4540                       Event->LogicalUnit, Controller->ControllerNumber,
4541                       Event->LogicalUnit, EventMessage);
4542       break;
4543     case 'S':
4544       if (RequestSense->SenseKey == DAC960_SenseKey_NoSense ||
4545           (RequestSense->SenseKey == DAC960_SenseKey_NotReady &&
4546            RequestSense->AdditionalSenseCode == 0x04 &&
4547            (RequestSense->AdditionalSenseCodeQualifier == 0x01 ||
4548             RequestSense->AdditionalSenseCodeQualifier == 0x02)))
4549         break;
4550       DAC960_Critical("Physical Device %d:%d %s\n", Controller,
4551                       Event->Channel, Event->TargetID, EventMessage);
4552       DAC960_Critical("Physical Device %d:%d Request Sense: "
4553                       "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
4554                       Controller,
4555                       Event->Channel,
4556                       Event->TargetID,
4557                       RequestSense->SenseKey,
4558                       RequestSense->AdditionalSenseCode,
4559                       RequestSense->AdditionalSenseCodeQualifier);
4560       DAC960_Critical("Physical Device %d:%d Request Sense: "
4561                       "Information = %02X%02X%02X%02X "
4562                       "%02X%02X%02X%02X\n",
4563                       Controller,
4564                       Event->Channel,
4565                       Event->TargetID,
4566                       RequestSense->Information[0],
4567                       RequestSense->Information[1],
4568                       RequestSense->Information[2],
4569                       RequestSense->Information[3],
4570                       RequestSense->CommandSpecificInformation[0],
4571                       RequestSense->CommandSpecificInformation[1],
4572                       RequestSense->CommandSpecificInformation[2],
4573                       RequestSense->CommandSpecificInformation[3]);
4574       break;
4575     case 'E':
4576       if (Controller->SuppressEnclosureMessages) break;
4577       sprintf(MessageBuffer, EventMessage, Event->LogicalUnit);
4578       DAC960_Critical("Enclosure %d %s\n", Controller,
4579                       Event->TargetID, MessageBuffer);
4580       break;
4581     case 'C':
4582       DAC960_Critical("Controller %s\n", Controller, EventMessage);
4583       break;
4584     default:
4585       DAC960_Critical("Unknown Controller Event Code %04X\n",
4586                       Controller, Event->EventCode);
4587       break;
4588     }
4589 }
4590
4591
4592 /*
4593   DAC960_V2_ReportProgress prints an appropriate progress message for
4594   Logical Device Long Operations.
4595 */
4596
4597 static void DAC960_V2_ReportProgress(DAC960_Controller_T *Controller,
4598                                      unsigned char *MessageString,
4599                                      unsigned int LogicalDeviceNumber,
4600                                      unsigned long BlocksCompleted,
4601                                      unsigned long LogicalDeviceSize)
4602 {
4603   Controller->EphemeralProgressMessage = true;
4604   DAC960_Progress("%s in Progress: Logical Drive %d (/dev/rd/c%dd%d) "
4605                   "%d%% completed\n", Controller,
4606                   MessageString,
4607                   LogicalDeviceNumber,
4608                   Controller->ControllerNumber,
4609                   LogicalDeviceNumber,
4610                   (100 * (BlocksCompleted >> 7)) / (LogicalDeviceSize >> 7));
4611   Controller->EphemeralProgressMessage = false;
4612 }
4613
4614
4615 /*
4616   DAC960_V2_ProcessCompletedCommand performs completion processing for Command
4617   for DAC960 V2 Firmware Controllers.
4618 */
4619
4620 static void DAC960_V2_ProcessCompletedCommand(DAC960_Command_T *Command)
4621 {
4622   DAC960_Controller_T *Controller = Command->Controller;
4623   DAC960_CommandType_T CommandType = Command->CommandType;
4624   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
4625   DAC960_V2_IOCTL_Opcode_T CommandOpcode = CommandMailbox->Common.IOCTL_Opcode;
4626   DAC960_V2_CommandStatus_T CommandStatus = Command->V2.CommandStatus;
4627
4628   if (CommandType == DAC960_ReadCommand ||
4629       CommandType == DAC960_WriteCommand)
4630     {
4631
4632 #ifdef FORCE_RETRY_DEBUG
4633       CommandStatus = DAC960_V2_AbormalCompletion;
4634 #endif
4635       Command->V2.RequestSense->SenseKey = DAC960_SenseKey_MediumError;
4636
4637       if (CommandStatus == DAC960_V2_NormalCompletion) {
4638
4639                 if (!DAC960_ProcessCompletedRequest(Command, true))
4640                         BUG();
4641
4642       } else if (Command->V2.RequestSense->SenseKey == DAC960_SenseKey_MediumError)
4643         {
4644           /*
4645            * break the command down into pieces and resubmit each
4646            * piece, hoping that some of them will succeed.
4647            */
4648            DAC960_queue_partial_rw(Command);
4649            return;
4650         }
4651       else
4652         {
4653           if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
4654             DAC960_V2_ReadWriteError(Command);
4655           /*
4656             Perform completion processing for all buffers in this I/O Request.
4657           */
4658           (void)DAC960_ProcessCompletedRequest(Command, false);
4659         }
4660     }
4661   else if (CommandType == DAC960_ReadRetryCommand ||
4662            CommandType == DAC960_WriteRetryCommand)
4663     {
4664       bool normal_completion;
4665
4666 #ifdef FORCE_RETRY_FAILURE_DEBUG
4667       static int retry_count = 1;
4668 #endif
4669       /*
4670         Perform completion processing for the portion that was
4671         retried, and submit the next portion, if any.
4672       */
4673       normal_completion = true;
4674       if (CommandStatus != DAC960_V2_NormalCompletion) {
4675         normal_completion = false;
4676         if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
4677             DAC960_V2_ReadWriteError(Command);
4678       }
4679
4680 #ifdef FORCE_RETRY_FAILURE_DEBUG
4681       if (!(++retry_count % 10000)) {
4682               printk("V2 error retry failure test\n");
4683               normal_completion = false;
4684               DAC960_V2_ReadWriteError(Command);
4685       }
4686 #endif
4687
4688       if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
4689                 DAC960_queue_partial_rw(Command);
4690                 return;
4691       }
4692     }
4693   else if (CommandType == DAC960_MonitoringCommand)
4694     {
4695       if (Controller->ShutdownMonitoringTimer)
4696               return;
4697       if (CommandOpcode == DAC960_V2_GetControllerInfo)
4698         {
4699           DAC960_V2_ControllerInfo_T *NewControllerInfo =
4700             Controller->V2.NewControllerInformation;
4701           DAC960_V2_ControllerInfo_T *ControllerInfo =
4702             &Controller->V2.ControllerInformation;
4703           Controller->LogicalDriveCount =
4704             NewControllerInfo->LogicalDevicesPresent;
4705           Controller->V2.NeedLogicalDeviceInformation = true;
4706           Controller->V2.NeedPhysicalDeviceInformation = true;
4707           Controller->V2.StartLogicalDeviceInformationScan = true;
4708           Controller->V2.StartPhysicalDeviceInformationScan = true;
4709           Controller->MonitoringAlertMode =
4710             (NewControllerInfo->LogicalDevicesCritical > 0 ||
4711              NewControllerInfo->LogicalDevicesOffline > 0 ||
4712              NewControllerInfo->PhysicalDisksCritical > 0 ||
4713              NewControllerInfo->PhysicalDisksOffline > 0);
4714           memcpy(ControllerInfo, NewControllerInfo,
4715                  sizeof(DAC960_V2_ControllerInfo_T));
4716         }
4717       else if (CommandOpcode == DAC960_V2_GetEvent)
4718         {
4719           if (CommandStatus == DAC960_V2_NormalCompletion) {
4720             DAC960_V2_ReportEvent(Controller, Controller->V2.Event);
4721           }
4722           Controller->V2.NextEventSequenceNumber++;
4723         }
4724       else if (CommandOpcode == DAC960_V2_GetPhysicalDeviceInfoValid &&
4725                CommandStatus == DAC960_V2_NormalCompletion)
4726         {
4727           DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
4728             Controller->V2.NewPhysicalDeviceInformation;
4729           unsigned int PhysicalDeviceIndex = Controller->V2.PhysicalDeviceIndex;
4730           DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
4731             Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
4732           DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4733             Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
4734           unsigned int DeviceIndex;
4735           while (PhysicalDeviceInfo != NULL &&
4736                  (NewPhysicalDeviceInfo->Channel >
4737                   PhysicalDeviceInfo->Channel ||
4738                   (NewPhysicalDeviceInfo->Channel ==
4739                    PhysicalDeviceInfo->Channel &&
4740                    (NewPhysicalDeviceInfo->TargetID >
4741                     PhysicalDeviceInfo->TargetID ||
4742                    (NewPhysicalDeviceInfo->TargetID ==
4743                     PhysicalDeviceInfo->TargetID &&
4744                     NewPhysicalDeviceInfo->LogicalUnit >
4745                     PhysicalDeviceInfo->LogicalUnit)))))
4746             {
4747               DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
4748                               Controller,
4749                               PhysicalDeviceInfo->Channel,
4750                               PhysicalDeviceInfo->TargetID);
4751               Controller->V2.PhysicalDeviceInformation
4752                              [PhysicalDeviceIndex] = NULL;
4753               Controller->V2.InquiryUnitSerialNumber
4754                              [PhysicalDeviceIndex] = NULL;
4755               kfree(PhysicalDeviceInfo);
4756               kfree(InquiryUnitSerialNumber);
4757               for (DeviceIndex = PhysicalDeviceIndex;
4758                    DeviceIndex < DAC960_V2_MaxPhysicalDevices - 1;
4759                    DeviceIndex++)
4760                 {
4761                   Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
4762                     Controller->V2.PhysicalDeviceInformation[DeviceIndex+1];
4763                   Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
4764                     Controller->V2.InquiryUnitSerialNumber[DeviceIndex+1];
4765                 }
4766               Controller->V2.PhysicalDeviceInformation
4767                              [DAC960_V2_MaxPhysicalDevices-1] = NULL;
4768               Controller->V2.InquiryUnitSerialNumber
4769                              [DAC960_V2_MaxPhysicalDevices-1] = NULL;
4770               PhysicalDeviceInfo =
4771                 Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
4772               InquiryUnitSerialNumber =
4773                 Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
4774             }
4775           if (PhysicalDeviceInfo == NULL ||
4776               (NewPhysicalDeviceInfo->Channel !=
4777                PhysicalDeviceInfo->Channel) ||
4778               (NewPhysicalDeviceInfo->TargetID !=
4779                PhysicalDeviceInfo->TargetID) ||
4780               (NewPhysicalDeviceInfo->LogicalUnit !=
4781                PhysicalDeviceInfo->LogicalUnit))
4782             {
4783               PhysicalDeviceInfo =
4784                 kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T), GFP_ATOMIC);
4785               InquiryUnitSerialNumber =
4786                   kmalloc(sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
4787                           GFP_ATOMIC);
4788               if (InquiryUnitSerialNumber == NULL ||
4789                   PhysicalDeviceInfo == NULL)
4790                 {
4791                   kfree(InquiryUnitSerialNumber);
4792                   InquiryUnitSerialNumber = NULL;
4793                   kfree(PhysicalDeviceInfo);
4794                   PhysicalDeviceInfo = NULL;
4795                 }
4796               DAC960_Critical("Physical Device %d:%d Now Exists%s\n",
4797                               Controller,
4798                               NewPhysicalDeviceInfo->Channel,
4799                               NewPhysicalDeviceInfo->TargetID,
4800                               (PhysicalDeviceInfo != NULL
4801                                ? "" : " - Allocation Failed"));
4802               if (PhysicalDeviceInfo != NULL)
4803                 {
4804                   memset(PhysicalDeviceInfo, 0,
4805                          sizeof(DAC960_V2_PhysicalDeviceInfo_T));
4806                   PhysicalDeviceInfo->PhysicalDeviceState =
4807                     DAC960_V2_Device_InvalidState;
4808                   memset(InquiryUnitSerialNumber, 0,
4809                          sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4810                   InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
4811                   for (DeviceIndex = DAC960_V2_MaxPhysicalDevices - 1;
4812                        DeviceIndex > PhysicalDeviceIndex;
4813                        DeviceIndex--)
4814                     {
4815                       Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
4816                         Controller->V2.PhysicalDeviceInformation[DeviceIndex-1];
4817                       Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
4818                         Controller->V2.InquiryUnitSerialNumber[DeviceIndex-1];
4819                     }
4820                   Controller->V2.PhysicalDeviceInformation
4821                                  [PhysicalDeviceIndex] =
4822                     PhysicalDeviceInfo;
4823                   Controller->V2.InquiryUnitSerialNumber
4824                                  [PhysicalDeviceIndex] =
4825                     InquiryUnitSerialNumber;
4826                   Controller->V2.NeedDeviceSerialNumberInformation = true;
4827                 }
4828             }
4829           if (PhysicalDeviceInfo != NULL)
4830             {
4831               if (NewPhysicalDeviceInfo->PhysicalDeviceState !=
4832                   PhysicalDeviceInfo->PhysicalDeviceState)
4833                 DAC960_Critical(
4834                   "Physical Device %d:%d is now %s\n", Controller,
4835                   NewPhysicalDeviceInfo->Channel,
4836                   NewPhysicalDeviceInfo->TargetID,
4837                   (NewPhysicalDeviceInfo->PhysicalDeviceState
4838                    == DAC960_V2_Device_Online
4839                    ? "ONLINE"
4840                    : NewPhysicalDeviceInfo->PhysicalDeviceState
4841                      == DAC960_V2_Device_Rebuild
4842                      ? "REBUILD"
4843                      : NewPhysicalDeviceInfo->PhysicalDeviceState
4844                        == DAC960_V2_Device_Missing
4845                        ? "MISSING"
4846                        : NewPhysicalDeviceInfo->PhysicalDeviceState
4847                          == DAC960_V2_Device_Critical
4848                          ? "CRITICAL"
4849                          : NewPhysicalDeviceInfo->PhysicalDeviceState
4850                            == DAC960_V2_Device_Dead
4851                            ? "DEAD"
4852                            : NewPhysicalDeviceInfo->PhysicalDeviceState
4853                              == DAC960_V2_Device_SuspectedDead
4854                              ? "SUSPECTED-DEAD"
4855                              : NewPhysicalDeviceInfo->PhysicalDeviceState
4856                                == DAC960_V2_Device_CommandedOffline
4857                                ? "COMMANDED-OFFLINE"
4858                                : NewPhysicalDeviceInfo->PhysicalDeviceState
4859                                  == DAC960_V2_Device_Standby
4860                                  ? "STANDBY" : "UNKNOWN"));
4861               if ((NewPhysicalDeviceInfo->ParityErrors !=
4862                    PhysicalDeviceInfo->ParityErrors) ||
4863                   (NewPhysicalDeviceInfo->SoftErrors !=
4864                    PhysicalDeviceInfo->SoftErrors) ||
4865                   (NewPhysicalDeviceInfo->HardErrors !=
4866                    PhysicalDeviceInfo->HardErrors) ||
4867                   (NewPhysicalDeviceInfo->MiscellaneousErrors !=
4868                    PhysicalDeviceInfo->MiscellaneousErrors) ||
4869                   (NewPhysicalDeviceInfo->CommandTimeouts !=
4870                    PhysicalDeviceInfo->CommandTimeouts) ||
4871                   (NewPhysicalDeviceInfo->Retries !=
4872                    PhysicalDeviceInfo->Retries) ||
4873                   (NewPhysicalDeviceInfo->Aborts !=
4874                    PhysicalDeviceInfo->Aborts) ||
4875                   (NewPhysicalDeviceInfo->PredictedFailuresDetected !=
4876                    PhysicalDeviceInfo->PredictedFailuresDetected))
4877                 {
4878                   DAC960_Critical("Physical Device %d:%d Errors: "
4879                                   "Parity = %d, Soft = %d, "
4880                                   "Hard = %d, Misc = %d\n",
4881                                   Controller,
4882                                   NewPhysicalDeviceInfo->Channel,
4883                                   NewPhysicalDeviceInfo->TargetID,
4884                                   NewPhysicalDeviceInfo->ParityErrors,
4885                                   NewPhysicalDeviceInfo->SoftErrors,
4886                                   NewPhysicalDeviceInfo->HardErrors,
4887                                   NewPhysicalDeviceInfo->MiscellaneousErrors);
4888                   DAC960_Critical("Physical Device %d:%d Errors: "
4889                                   "Timeouts = %d, Retries = %d, "
4890                                   "Aborts = %d, Predicted = %d\n",
4891                                   Controller,
4892                                   NewPhysicalDeviceInfo->Channel,
4893                                   NewPhysicalDeviceInfo->TargetID,
4894                                   NewPhysicalDeviceInfo->CommandTimeouts,
4895                                   NewPhysicalDeviceInfo->Retries,
4896                                   NewPhysicalDeviceInfo->Aborts,
4897                                   NewPhysicalDeviceInfo
4898                                   ->PredictedFailuresDetected);
4899                 }
4900               if ((PhysicalDeviceInfo->PhysicalDeviceState
4901                    == DAC960_V2_Device_Dead ||
4902                    PhysicalDeviceInfo->PhysicalDeviceState
4903                    == DAC960_V2_Device_InvalidState) &&
4904                   NewPhysicalDeviceInfo->PhysicalDeviceState
4905                   != DAC960_V2_Device_Dead)
4906                 Controller->V2.NeedDeviceSerialNumberInformation = true;
4907               memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
4908                      sizeof(DAC960_V2_PhysicalDeviceInfo_T));
4909             }
4910           NewPhysicalDeviceInfo->LogicalUnit++;
4911           Controller->V2.PhysicalDeviceIndex++;
4912         }
4913       else if (CommandOpcode == DAC960_V2_GetPhysicalDeviceInfoValid)
4914         {
4915           unsigned int DeviceIndex;
4916           for (DeviceIndex = Controller->V2.PhysicalDeviceIndex;
4917                DeviceIndex < DAC960_V2_MaxPhysicalDevices;
4918                DeviceIndex++)
4919             {
4920               DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
4921                 Controller->V2.PhysicalDeviceInformation[DeviceIndex];
4922               DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4923                 Controller->V2.InquiryUnitSerialNumber[DeviceIndex];
4924               if (PhysicalDeviceInfo == NULL) break;
4925               DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
4926                               Controller,
4927                               PhysicalDeviceInfo->Channel,
4928                               PhysicalDeviceInfo->TargetID);
4929               Controller->V2.PhysicalDeviceInformation[DeviceIndex] = NULL;
4930               Controller->V2.InquiryUnitSerialNumber[DeviceIndex] = NULL;
4931               kfree(PhysicalDeviceInfo);
4932               kfree(InquiryUnitSerialNumber);
4933             }
4934           Controller->V2.NeedPhysicalDeviceInformation = false;
4935         }
4936       else if (CommandOpcode == DAC960_V2_GetLogicalDeviceInfoValid &&
4937                CommandStatus == DAC960_V2_NormalCompletion)
4938         {
4939           DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
4940             Controller->V2.NewLogicalDeviceInformation;
4941           unsigned short LogicalDeviceNumber =
4942             NewLogicalDeviceInfo->LogicalDeviceNumber;
4943           DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
4944             Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber];
4945           if (LogicalDeviceInfo == NULL)
4946             {
4947               DAC960_V2_PhysicalDevice_T PhysicalDevice;
4948               PhysicalDevice.Controller = 0;
4949               PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
4950               PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
4951               PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
4952               Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
4953                 PhysicalDevice;
4954               LogicalDeviceInfo = kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T),
4955                                           GFP_ATOMIC);
4956               Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
4957                 LogicalDeviceInfo;
4958               DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
4959                               "Now Exists%s\n", Controller,
4960                               LogicalDeviceNumber,
4961                               Controller->ControllerNumber,
4962                               LogicalDeviceNumber,
4963                               (LogicalDeviceInfo != NULL
4964                                ? "" : " - Allocation Failed"));
4965               if (LogicalDeviceInfo != NULL)
4966                 {
4967                   memset(LogicalDeviceInfo, 0,
4968                          sizeof(DAC960_V2_LogicalDeviceInfo_T));
4969                   DAC960_ComputeGenericDiskInfo(Controller);
4970                 }
4971             }
4972           if (LogicalDeviceInfo != NULL)
4973             {
4974               unsigned long LogicalDeviceSize =
4975                 NewLogicalDeviceInfo->ConfigurableDeviceSize;
4976               if (NewLogicalDeviceInfo->LogicalDeviceState !=
4977                   LogicalDeviceInfo->LogicalDeviceState)
4978                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
4979                                 "is now %s\n", Controller,
4980                                 LogicalDeviceNumber,
4981                                 Controller->ControllerNumber,
4982                                 LogicalDeviceNumber,
4983                                 (NewLogicalDeviceInfo->LogicalDeviceState
4984                                  == DAC960_V2_LogicalDevice_Online
4985                                  ? "ONLINE"
4986                                  : NewLogicalDeviceInfo->LogicalDeviceState
4987                                    == DAC960_V2_LogicalDevice_Critical
4988                                    ? "CRITICAL" : "OFFLINE"));
4989               if ((NewLogicalDeviceInfo->SoftErrors !=
4990                    LogicalDeviceInfo->SoftErrors) ||
4991                   (NewLogicalDeviceInfo->CommandsFailed !=
4992                    LogicalDeviceInfo->CommandsFailed) ||
4993                   (NewLogicalDeviceInfo->DeferredWriteErrors !=
4994                    LogicalDeviceInfo->DeferredWriteErrors))
4995                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) Errors: "
4996                                 "Soft = %d, Failed = %d, Deferred Write = %d\n",
4997                                 Controller, LogicalDeviceNumber,
4998                                 Controller->ControllerNumber,
4999                                 LogicalDeviceNumber,
5000                                 NewLogicalDeviceInfo->SoftErrors,
5001                                 NewLogicalDeviceInfo->CommandsFailed,
5002                                 NewLogicalDeviceInfo->DeferredWriteErrors);
5003               if (NewLogicalDeviceInfo->ConsistencyCheckInProgress)
5004                 DAC960_V2_ReportProgress(Controller,
5005                                          "Consistency Check",
5006                                          LogicalDeviceNumber,
5007                                          NewLogicalDeviceInfo
5008                                          ->ConsistencyCheckBlockNumber,
5009                                          LogicalDeviceSize);
5010               else if (NewLogicalDeviceInfo->RebuildInProgress)
5011                 DAC960_V2_ReportProgress(Controller,
5012                                          "Rebuild",
5013                                          LogicalDeviceNumber,
5014                                          NewLogicalDeviceInfo
5015                                          ->RebuildBlockNumber,
5016                                          LogicalDeviceSize);
5017               else if (NewLogicalDeviceInfo->BackgroundInitializationInProgress)
5018                 DAC960_V2_ReportProgress(Controller,
5019                                          "Background Initialization",
5020                                          LogicalDeviceNumber,
5021                                          NewLogicalDeviceInfo
5022                                          ->BackgroundInitializationBlockNumber,
5023                                          LogicalDeviceSize);
5024               else if (NewLogicalDeviceInfo->ForegroundInitializationInProgress)
5025                 DAC960_V2_ReportProgress(Controller,
5026                                          "Foreground Initialization",
5027                                          LogicalDeviceNumber,
5028                                          NewLogicalDeviceInfo
5029                                          ->ForegroundInitializationBlockNumber,
5030                                          LogicalDeviceSize);
5031               else if (NewLogicalDeviceInfo->DataMigrationInProgress)
5032                 DAC960_V2_ReportProgress(Controller,
5033                                          "Data Migration",
5034                                          LogicalDeviceNumber,
5035                                          NewLogicalDeviceInfo
5036                                          ->DataMigrationBlockNumber,
5037                                          LogicalDeviceSize);
5038               else if (NewLogicalDeviceInfo->PatrolOperationInProgress)
5039                 DAC960_V2_ReportProgress(Controller,
5040                                          "Patrol Operation",
5041                                          LogicalDeviceNumber,
5042                                          NewLogicalDeviceInfo
5043                                          ->PatrolOperationBlockNumber,
5044                                          LogicalDeviceSize);
5045               if (LogicalDeviceInfo->BackgroundInitializationInProgress &&
5046                   !NewLogicalDeviceInfo->BackgroundInitializationInProgress)
5047                 DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) "
5048                                 "Background Initialization %s\n",
5049                                 Controller,
5050                                 LogicalDeviceNumber,
5051                                 Controller->ControllerNumber,
5052                                 LogicalDeviceNumber,
5053                                 (NewLogicalDeviceInfo->LogicalDeviceControl
5054                                                       .LogicalDeviceInitialized
5055                                  ? "Completed" : "Failed"));
5056               memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
5057                      sizeof(DAC960_V2_LogicalDeviceInfo_T));
5058             }
5059           Controller->V2.LogicalDriveFoundDuringScan
5060                          [LogicalDeviceNumber] = true;
5061           NewLogicalDeviceInfo->LogicalDeviceNumber++;
5062         }
5063       else if (CommandOpcode == DAC960_V2_GetLogicalDeviceInfoValid)
5064         {
5065           int LogicalDriveNumber;
5066           for (LogicalDriveNumber = 0;
5067                LogicalDriveNumber < DAC960_MaxLogicalDrives;
5068                LogicalDriveNumber++)
5069             {
5070               DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
5071                 Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
5072               if (LogicalDeviceInfo == NULL ||
5073                   Controller->V2.LogicalDriveFoundDuringScan
5074                                  [LogicalDriveNumber])
5075                 continue;
5076               DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
5077                               "No Longer Exists\n", Controller,
5078                               LogicalDriveNumber,
5079                               Controller->ControllerNumber,
5080                               LogicalDriveNumber);
5081               Controller->V2.LogicalDeviceInformation
5082                              [LogicalDriveNumber] = NULL;
5083               kfree(LogicalDeviceInfo);
5084               Controller->LogicalDriveInitiallyAccessible
5085                           [LogicalDriveNumber] = false;
5086               DAC960_ComputeGenericDiskInfo(Controller);
5087             }
5088           Controller->V2.NeedLogicalDeviceInformation = false;
5089         }
5090       else if (CommandOpcode == DAC960_V2_SCSI_10_Passthru)
5091         {
5092             DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
5093                 Controller->V2.InquiryUnitSerialNumber[Controller->V2.PhysicalDeviceIndex - 1];
5094
5095             if (CommandStatus != DAC960_V2_NormalCompletion) {
5096                 memset(InquiryUnitSerialNumber,
5097                         0, sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
5098                 InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
5099             } else
5100                 memcpy(InquiryUnitSerialNumber,
5101                         Controller->V2.NewInquiryUnitSerialNumber,
5102                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
5103
5104              Controller->V2.NeedDeviceSerialNumberInformation = false;
5105         }
5106
5107       if (Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
5108           - Controller->V2.NextEventSequenceNumber > 0)
5109         {
5110           CommandMailbox->GetEvent.CommandOpcode = DAC960_V2_IOCTL;
5111           CommandMailbox->GetEvent.DataTransferSize = sizeof(DAC960_V2_Event_T);
5112           CommandMailbox->GetEvent.EventSequenceNumberHigh16 =
5113             Controller->V2.NextEventSequenceNumber >> 16;
5114           CommandMailbox->GetEvent.ControllerNumber = 0;
5115           CommandMailbox->GetEvent.IOCTL_Opcode =
5116             DAC960_V2_GetEvent;
5117           CommandMailbox->GetEvent.EventSequenceNumberLow16 =
5118             Controller->V2.NextEventSequenceNumber & 0xFFFF;
5119           CommandMailbox->GetEvent.DataTransferMemoryAddress
5120                                   .ScatterGatherSegments[0]
5121                                   .SegmentDataPointer =
5122             Controller->V2.EventDMA;
5123           CommandMailbox->GetEvent.DataTransferMemoryAddress
5124                                   .ScatterGatherSegments[0]
5125                                   .SegmentByteCount =
5126             CommandMailbox->GetEvent.DataTransferSize;
5127           DAC960_QueueCommand(Command);
5128           return;
5129         }
5130       if (Controller->V2.NeedPhysicalDeviceInformation)
5131         {
5132           if (Controller->V2.NeedDeviceSerialNumberInformation)
5133             {
5134               DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
5135                 Controller->V2.NewInquiryUnitSerialNumber;
5136               InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
5137
5138               DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
5139                         Controller->V2.NewPhysicalDeviceInformation->Channel,
5140                         Controller->V2.NewPhysicalDeviceInformation->TargetID,
5141                 Controller->V2.NewPhysicalDeviceInformation->LogicalUnit - 1);
5142
5143
5144               DAC960_QueueCommand(Command);
5145               return;
5146             }
5147           if (Controller->V2.StartPhysicalDeviceInformationScan)
5148             {
5149               Controller->V2.PhysicalDeviceIndex = 0;
5150               Controller->V2.NewPhysicalDeviceInformation->Channel = 0;
5151               Controller->V2.NewPhysicalDeviceInformation->TargetID = 0;
5152               Controller->V2.NewPhysicalDeviceInformation->LogicalUnit = 0;
5153               Controller->V2.StartPhysicalDeviceInformationScan = false;
5154             }
5155           CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
5156           CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
5157             sizeof(DAC960_V2_PhysicalDeviceInfo_T);
5158           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit =
5159             Controller->V2.NewPhysicalDeviceInformation->LogicalUnit;
5160           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID =
5161             Controller->V2.NewPhysicalDeviceInformation->TargetID;
5162           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel =
5163             Controller->V2.NewPhysicalDeviceInformation->Channel;
5164           CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
5165             DAC960_V2_GetPhysicalDeviceInfoValid;
5166           CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
5167                                             .ScatterGatherSegments[0]
5168                                             .SegmentDataPointer =
5169             Controller->V2.NewPhysicalDeviceInformationDMA;
5170           CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
5171                                             .ScatterGatherSegments[0]
5172                                             .SegmentByteCount =
5173             CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
5174           DAC960_QueueCommand(Command);
5175           return;
5176         }
5177       if (Controller->V2.NeedLogicalDeviceInformation)
5178         {
5179           if (Controller->V2.StartLogicalDeviceInformationScan)
5180             {
5181               int LogicalDriveNumber;
5182               for (LogicalDriveNumber = 0;
5183                    LogicalDriveNumber < DAC960_MaxLogicalDrives;
5184                    LogicalDriveNumber++)
5185                 Controller->V2.LogicalDriveFoundDuringScan
5186                                [LogicalDriveNumber] = false;
5187               Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber = 0;
5188               Controller->V2.StartLogicalDeviceInformationScan = false;
5189             }
5190           CommandMailbox->LogicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
5191           CommandMailbox->LogicalDeviceInfo.DataTransferSize =
5192             sizeof(DAC960_V2_LogicalDeviceInfo_T);
5193           CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
5194             Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber;
5195           CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
5196             DAC960_V2_GetLogicalDeviceInfoValid;
5197           CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
5198                                            .ScatterGatherSegments[0]
5199                                            .SegmentDataPointer =
5200             Controller->V2.NewLogicalDeviceInformationDMA;
5201           CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
5202                                            .ScatterGatherSegments[0]
5203                                            .SegmentByteCount =
5204             CommandMailbox->LogicalDeviceInfo.DataTransferSize;
5205           DAC960_QueueCommand(Command);
5206           return;
5207         }
5208       Controller->MonitoringTimerCount++;
5209       Controller->MonitoringTimer.expires =
5210         jiffies + DAC960_HealthStatusMonitoringInterval;
5211         add_timer(&Controller->MonitoringTimer);
5212     }
5213   if (CommandType == DAC960_ImmediateCommand)
5214     {
5215       complete(Command->Completion);
5216       Command->Completion = NULL;
5217       return;
5218     }
5219   if (CommandType == DAC960_QueuedCommand)
5220     {
5221       DAC960_V2_KernelCommand_T *KernelCommand = Command->V2.KernelCommand;
5222       KernelCommand->CommandStatus = CommandStatus;
5223       KernelCommand->RequestSenseLength = Command->V2.RequestSenseLength;
5224       KernelCommand->DataTransferLength = Command->V2.DataTransferResidue;
5225       Command->V2.KernelCommand = NULL;
5226       DAC960_DeallocateCommand(Command);
5227       KernelCommand->CompletionFunction(KernelCommand);
5228       return;
5229     }
5230   /*
5231     Queue a Status Monitoring Command to the Controller using the just
5232     completed Command if one was deferred previously due to lack of a
5233     free Command when the Monitoring Timer Function was called.
5234   */
5235   if (Controller->MonitoringCommandDeferred)
5236     {
5237       Controller->MonitoringCommandDeferred = false;
5238       DAC960_V2_QueueMonitoringCommand(Command);
5239       return;
5240     }
5241   /*
5242     Deallocate the Command.
5243   */
5244   DAC960_DeallocateCommand(Command);
5245   /*
5246     Wake up any processes waiting on a free Command.
5247   */
5248   wake_up(&Controller->CommandWaitQueue);
5249 }
5250
5251 /*
5252   DAC960_GEM_InterruptHandler handles hardware interrupts from DAC960 GEM Series
5253   Controllers.
5254 */
5255
5256 static irqreturn_t DAC960_GEM_InterruptHandler(int IRQ_Channel,
5257                                        void *DeviceIdentifier)
5258 {
5259   DAC960_Controller_T *Controller = DeviceIdentifier;
5260   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5261   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5262   unsigned long flags;
5263
5264   spin_lock_irqsave(&Controller->queue_lock, flags);
5265   DAC960_GEM_AcknowledgeInterrupt(ControllerBaseAddress);
5266   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5267   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5268     {
5269        DAC960_V2_CommandIdentifier_T CommandIdentifier =
5270            NextStatusMailbox->Fields.CommandIdentifier;
5271        DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5272        Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5273        Command->V2.RequestSenseLength =
5274            NextStatusMailbox->Fields.RequestSenseLength;
5275        Command->V2.DataTransferResidue =
5276            NextStatusMailbox->Fields.DataTransferResidue;
5277        NextStatusMailbox->Words[0] = 0;
5278        if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5279            NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5280        DAC960_V2_ProcessCompletedCommand(Command);
5281     }
5282   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5283   /*
5284     Attempt to remove additional I/O Requests from the Controller's
5285     I/O Request Queue and queue them to the Controller.
5286   */
5287   DAC960_ProcessRequest(Controller);
5288   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5289   return IRQ_HANDLED;
5290 }
5291
5292 /*
5293   DAC960_BA_InterruptHandler handles hardware interrupts from DAC960 BA Series
5294   Controllers.
5295 */
5296
5297 static irqreturn_t DAC960_BA_InterruptHandler(int IRQ_Channel,
5298                                        void *DeviceIdentifier)
5299 {
5300   DAC960_Controller_T *Controller = DeviceIdentifier;
5301   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5302   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5303   unsigned long flags;
5304
5305   spin_lock_irqsave(&Controller->queue_lock, flags);
5306   DAC960_BA_AcknowledgeInterrupt(ControllerBaseAddress);
5307   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5308   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5309     {
5310       DAC960_V2_CommandIdentifier_T CommandIdentifier =
5311         NextStatusMailbox->Fields.CommandIdentifier;
5312       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5313       Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5314       Command->V2.RequestSenseLength =
5315         NextStatusMailbox->Fields.RequestSenseLength;
5316       Command->V2.DataTransferResidue =
5317         NextStatusMailbox->Fields.DataTransferResidue;
5318       NextStatusMailbox->Words[0] = 0;
5319       if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5320         NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5321       DAC960_V2_ProcessCompletedCommand(Command);
5322     }
5323   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5324   /*
5325     Attempt to remove additional I/O Requests from the Controller's
5326     I/O Request Queue and queue them to the Controller.
5327   */
5328   DAC960_ProcessRequest(Controller);
5329   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5330   return IRQ_HANDLED;
5331 }
5332
5333
5334 /*
5335   DAC960_LP_InterruptHandler handles hardware interrupts from DAC960 LP Series
5336   Controllers.
5337 */
5338
5339 static irqreturn_t DAC960_LP_InterruptHandler(int IRQ_Channel,
5340                                        void *DeviceIdentifier)
5341 {
5342   DAC960_Controller_T *Controller = DeviceIdentifier;
5343   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5344   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5345   unsigned long flags;
5346
5347   spin_lock_irqsave(&Controller->queue_lock, flags);
5348   DAC960_LP_AcknowledgeInterrupt(ControllerBaseAddress);
5349   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5350   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5351     {
5352       DAC960_V2_CommandIdentifier_T CommandIdentifier =
5353         NextStatusMailbox->Fields.CommandIdentifier;
5354       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5355       Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5356       Command->V2.RequestSenseLength =
5357         NextStatusMailbox->Fields.RequestSenseLength;
5358       Command->V2.DataTransferResidue =
5359         NextStatusMailbox->Fields.DataTransferResidue;
5360       NextStatusMailbox->Words[0] = 0;
5361       if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5362         NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5363       DAC960_V2_ProcessCompletedCommand(Command);
5364     }
5365   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5366   /*
5367     Attempt to remove additional I/O Requests from the Controller's
5368     I/O Request Queue and queue them to the Controller.
5369   */
5370   DAC960_ProcessRequest(Controller);
5371   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5372   return IRQ_HANDLED;
5373 }
5374
5375
5376 /*
5377   DAC960_LA_InterruptHandler handles hardware interrupts from DAC960 LA Series
5378   Controllers.
5379 */
5380
5381 static irqreturn_t DAC960_LA_InterruptHandler(int IRQ_Channel,
5382                                        void *DeviceIdentifier)
5383 {
5384   DAC960_Controller_T *Controller = DeviceIdentifier;
5385   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5386   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
5387   unsigned long flags;
5388
5389   spin_lock_irqsave(&Controller->queue_lock, flags);
5390   DAC960_LA_AcknowledgeInterrupt(ControllerBaseAddress);
5391   NextStatusMailbox = Controller->V1.NextStatusMailbox;
5392   while (NextStatusMailbox->Fields.Valid)
5393     {
5394       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5395         NextStatusMailbox->Fields.CommandIdentifier;
5396       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5397       Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5398       NextStatusMailbox->Word = 0;
5399       if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
5400         NextStatusMailbox = Controller->V1.FirstStatusMailbox;
5401       DAC960_V1_ProcessCompletedCommand(Command);
5402     }
5403   Controller->V1.NextStatusMailbox = NextStatusMailbox;
5404   /*
5405     Attempt to remove additional I/O Requests from the Controller's
5406     I/O Request Queue and queue them to the Controller.
5407   */
5408   DAC960_ProcessRequest(Controller);
5409   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5410   return IRQ_HANDLED;
5411 }
5412
5413
5414 /*
5415   DAC960_PG_InterruptHandler handles hardware interrupts from DAC960 PG Series
5416   Controllers.
5417 */
5418
5419 static irqreturn_t DAC960_PG_InterruptHandler(int IRQ_Channel,
5420                                        void *DeviceIdentifier)
5421 {
5422   DAC960_Controller_T *Controller = DeviceIdentifier;
5423   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5424   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
5425   unsigned long flags;
5426
5427   spin_lock_irqsave(&Controller->queue_lock, flags);
5428   DAC960_PG_AcknowledgeInterrupt(ControllerBaseAddress);
5429   NextStatusMailbox = Controller->V1.NextStatusMailbox;
5430   while (NextStatusMailbox->Fields.Valid)
5431     {
5432       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5433         NextStatusMailbox->Fields.CommandIdentifier;
5434       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5435       Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5436       NextStatusMailbox->Word = 0;
5437       if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
5438         NextStatusMailbox = Controller->V1.FirstStatusMailbox;
5439       DAC960_V1_ProcessCompletedCommand(Command);
5440     }
5441   Controller->V1.NextStatusMailbox = NextStatusMailbox;
5442   /*
5443     Attempt to remove additional I/O Requests from the Controller's
5444     I/O Request Queue and queue them to the Controller.
5445   */
5446   DAC960_ProcessRequest(Controller);
5447   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5448   return IRQ_HANDLED;
5449 }
5450
5451
5452 /*
5453   DAC960_PD_InterruptHandler handles hardware interrupts from DAC960 PD Series
5454   Controllers.
5455 */
5456
5457 static irqreturn_t DAC960_PD_InterruptHandler(int IRQ_Channel,
5458                                        void *DeviceIdentifier)
5459 {
5460   DAC960_Controller_T *Controller = DeviceIdentifier;
5461   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5462   unsigned long flags;
5463
5464   spin_lock_irqsave(&Controller->queue_lock, flags);
5465   while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
5466     {
5467       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5468         DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
5469       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5470       Command->V1.CommandStatus =
5471         DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
5472       DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
5473       DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
5474       DAC960_V1_ProcessCompletedCommand(Command);
5475     }
5476   /*
5477     Attempt to remove additional I/O Requests from the Controller's
5478     I/O Request Queue and queue them to the Controller.
5479   */
5480   DAC960_ProcessRequest(Controller);
5481   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5482   return IRQ_HANDLED;
5483 }
5484
5485
5486 /*
5487   DAC960_P_InterruptHandler handles hardware interrupts from DAC960 P Series
5488   Controllers.
5489
5490   Translations of DAC960_V1_Enquiry and DAC960_V1_GetDeviceState rely
5491   on the data having been placed into DAC960_Controller_T, rather than
5492   an arbitrary buffer.
5493 */
5494
5495 static irqreturn_t DAC960_P_InterruptHandler(int IRQ_Channel,
5496                                       void *DeviceIdentifier)
5497 {
5498   DAC960_Controller_T *Controller = DeviceIdentifier;
5499   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5500   unsigned long flags;
5501
5502   spin_lock_irqsave(&Controller->queue_lock, flags);
5503   while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
5504     {
5505       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5506         DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
5507       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5508       DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5509       DAC960_V1_CommandOpcode_T CommandOpcode =
5510         CommandMailbox->Common.CommandOpcode;
5511       Command->V1.CommandStatus =
5512         DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
5513       DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
5514       DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
5515       switch (CommandOpcode)
5516         {
5517         case DAC960_V1_Enquiry_Old:
5518           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Enquiry;
5519           DAC960_P_To_PD_TranslateEnquiry(Controller->V1.NewEnquiry);
5520           break;
5521         case DAC960_V1_GetDeviceState_Old:
5522           Command->V1.CommandMailbox.Common.CommandOpcode =
5523                                                 DAC960_V1_GetDeviceState;
5524           DAC960_P_To_PD_TranslateDeviceState(Controller->V1.NewDeviceState);
5525           break;
5526         case DAC960_V1_Read_Old:
5527           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Read;
5528           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5529           break;
5530         case DAC960_V1_Write_Old:
5531           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Write;
5532           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5533           break;
5534         case DAC960_V1_ReadWithScatterGather_Old:
5535           Command->V1.CommandMailbox.Common.CommandOpcode =
5536             DAC960_V1_ReadWithScatterGather;
5537           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5538           break;
5539         case DAC960_V1_WriteWithScatterGather_Old:
5540           Command->V1.CommandMailbox.Common.CommandOpcode =
5541             DAC960_V1_WriteWithScatterGather;
5542           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5543           break;
5544         default:
5545           break;
5546         }
5547       DAC960_V1_ProcessCompletedCommand(Command);
5548     }
5549   /*
5550     Attempt to remove additional I/O Requests from the Controller's
5551     I/O Request Queue and queue them to the Controller.
5552   */
5553   DAC960_ProcessRequest(Controller);
5554   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5555   return IRQ_HANDLED;
5556 }
5557
5558
5559 /*
5560   DAC960_V1_QueueMonitoringCommand queues a Monitoring Command to DAC960 V1
5561   Firmware Controllers.
5562 */
5563
5564 static void DAC960_V1_QueueMonitoringCommand(DAC960_Command_T *Command)
5565 {
5566   DAC960_Controller_T *Controller = Command->Controller;
5567   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5568   DAC960_V1_ClearCommand(Command);
5569   Command->CommandType = DAC960_MonitoringCommand;
5570   CommandMailbox->Type3.CommandOpcode = DAC960_V1_Enquiry;
5571   CommandMailbox->Type3.BusAddress = Controller->V1.NewEnquiryDMA;
5572   DAC960_QueueCommand(Command);
5573 }
5574
5575
5576 /*
5577   DAC960_V2_QueueMonitoringCommand queues a Monitoring Command to DAC960 V2
5578   Firmware Controllers.
5579 */
5580
5581 static void DAC960_V2_QueueMonitoringCommand(DAC960_Command_T *Command)
5582 {
5583   DAC960_Controller_T *Controller = Command->Controller;
5584   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
5585   DAC960_V2_ClearCommand(Command);
5586   Command->CommandType = DAC960_MonitoringCommand;
5587   CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
5588   CommandMailbox->ControllerInfo.CommandControlBits
5589                                 .DataTransferControllerToHost = true;
5590   CommandMailbox->ControllerInfo.CommandControlBits
5591                                 .NoAutoRequestSense = true;
5592   CommandMailbox->ControllerInfo.DataTransferSize =
5593     sizeof(DAC960_V2_ControllerInfo_T);
5594   CommandMailbox->ControllerInfo.ControllerNumber = 0;
5595   CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
5596   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
5597                                 .ScatterGatherSegments[0]
5598                                 .SegmentDataPointer =
5599     Controller->V2.NewControllerInformationDMA;
5600   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
5601                                 .ScatterGatherSegments[0]
5602                                 .SegmentByteCount =
5603     CommandMailbox->ControllerInfo.DataTransferSize;
5604   DAC960_QueueCommand(Command);
5605 }
5606
5607
5608 /*
5609   DAC960_MonitoringTimerFunction is the timer function for monitoring
5610   the status of DAC960 Controllers.
5611 */
5612
5613 static void DAC960_MonitoringTimerFunction(unsigned long TimerData)
5614 {
5615   DAC960_Controller_T *Controller = (DAC960_Controller_T *) TimerData;
5616   DAC960_Command_T *Command;
5617   unsigned long flags;
5618
5619   if (Controller->FirmwareType == DAC960_V1_Controller)
5620     {
5621       spin_lock_irqsave(&Controller->queue_lock, flags);
5622       /*
5623         Queue a Status Monitoring Command to Controller.
5624       */
5625       Command = DAC960_AllocateCommand(Controller);
5626       if (Command != NULL)
5627         DAC960_V1_QueueMonitoringCommand(Command);
5628       else Controller->MonitoringCommandDeferred = true;
5629       spin_unlock_irqrestore(&Controller->queue_lock, flags);
5630     }
5631   else
5632     {
5633       DAC960_V2_ControllerInfo_T *ControllerInfo =
5634         &Controller->V2.ControllerInformation;
5635       unsigned int StatusChangeCounter =
5636         Controller->V2.HealthStatusBuffer->StatusChangeCounter;
5637       bool ForceMonitoringCommand = false;
5638       if (time_after(jiffies, Controller->SecondaryMonitoringTime
5639           + DAC960_SecondaryMonitoringInterval))
5640         {
5641           int LogicalDriveNumber;
5642           for (LogicalDriveNumber = 0;
5643                LogicalDriveNumber < DAC960_MaxLogicalDrives;
5644                LogicalDriveNumber++)
5645             {
5646               DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
5647                 Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
5648               if (LogicalDeviceInfo == NULL) continue;
5649               if (!LogicalDeviceInfo->LogicalDeviceControl
5650                                      .LogicalDeviceInitialized)
5651                 {
5652                   ForceMonitoringCommand = true;
5653                   break;
5654                 }
5655             }
5656           Controller->SecondaryMonitoringTime = jiffies;
5657         }
5658       if (StatusChangeCounter == Controller->V2.StatusChangeCounter &&
5659           Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
5660           == Controller->V2.NextEventSequenceNumber &&
5661           (ControllerInfo->BackgroundInitializationsActive +
5662            ControllerInfo->LogicalDeviceInitializationsActive +
5663            ControllerInfo->PhysicalDeviceInitializationsActive +
5664            ControllerInfo->ConsistencyChecksActive +
5665            ControllerInfo->RebuildsActive +
5666            ControllerInfo->OnlineExpansionsActive == 0 ||
5667            time_before(jiffies, Controller->PrimaryMonitoringTime
5668            + DAC960_MonitoringTimerInterval)) &&
5669           !ForceMonitoringCommand)
5670         {
5671           Controller->MonitoringTimer.expires =
5672             jiffies + DAC960_HealthStatusMonitoringInterval;
5673             add_timer(&Controller->MonitoringTimer);
5674           return;
5675         }
5676       Controller->V2.StatusChangeCounter = StatusChangeCounter;
5677       Controller->PrimaryMonitoringTime = jiffies;
5678
5679       spin_lock_irqsave(&Controller->queue_lock, flags);
5680       /*
5681         Queue a Status Monitoring Command to Controller.
5682       */
5683       Command = DAC960_AllocateCommand(Controller);
5684       if (Command != NULL)
5685         DAC960_V2_QueueMonitoringCommand(Command);
5686       else Controller->MonitoringCommandDeferred = true;
5687       spin_unlock_irqrestore(&Controller->queue_lock, flags);
5688       /*
5689         Wake up any processes waiting on a Health Status Buffer change.
5690       */
5691       wake_up(&Controller->HealthStatusWaitQueue);
5692     }
5693 }
5694
5695 /*
5696   DAC960_CheckStatusBuffer verifies that there is room to hold ByteCount
5697   additional bytes in the Combined Status Buffer and grows the buffer if
5698   necessary.  It returns true if there is enough room and false otherwise.
5699 */
5700
5701 static bool DAC960_CheckStatusBuffer(DAC960_Controller_T *Controller,
5702                                         unsigned int ByteCount)
5703 {
5704   unsigned char *NewStatusBuffer;
5705   if (Controller->InitialStatusLength + 1 +
5706       Controller->CurrentStatusLength + ByteCount + 1 <=
5707       Controller->CombinedStatusBufferLength)
5708     return true;
5709   if (Controller->CombinedStatusBufferLength == 0)
5710     {
5711       unsigned int NewStatusBufferLength = DAC960_InitialStatusBufferSize;
5712       while (NewStatusBufferLength < ByteCount)
5713         NewStatusBufferLength *= 2;
5714       Controller->CombinedStatusBuffer = kmalloc(NewStatusBufferLength,
5715                                                   GFP_ATOMIC);
5716       if (Controller->CombinedStatusBuffer == NULL) return false;
5717       Controller->CombinedStatusBufferLength = NewStatusBufferLength;
5718       return true;
5719     }
5720   NewStatusBuffer = kmalloc(2 * Controller->CombinedStatusBufferLength,
5721                              GFP_ATOMIC);
5722   if (NewStatusBuffer == NULL)
5723     {
5724       DAC960_Warning("Unable to expand Combined Status Buffer - Truncating\n",
5725                      Controller);
5726       return false;
5727     }
5728   memcpy(NewStatusBuffer, Controller->CombinedStatusBuffer,
5729          Controller->CombinedStatusBufferLength);
5730   kfree(Controller->CombinedStatusBuffer);
5731   Controller->CombinedStatusBuffer = NewStatusBuffer;
5732   Controller->CombinedStatusBufferLength *= 2;
5733   Controller->CurrentStatusBuffer =
5734     &NewStatusBuffer[Controller->InitialStatusLength + 1];
5735   return true;
5736 }
5737
5738
5739 /*
5740   DAC960_Message prints Driver Messages.
5741 */
5742
5743 static void DAC960_Message(DAC960_MessageLevel_T MessageLevel,
5744                            unsigned char *Format,
5745                            DAC960_Controller_T *Controller,
5746                            ...)
5747 {
5748   static unsigned char Buffer[DAC960_LineBufferSize];
5749   static bool BeginningOfLine = true;
5750   va_list Arguments;
5751   int Length = 0;
5752   va_start(Arguments, Controller);
5753   Length = vsprintf(Buffer, Format, Arguments);
5754   va_end(Arguments);
5755   if (Controller == NULL)
5756     printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5757            DAC960_ControllerCount, Buffer);
5758   else if (MessageLevel == DAC960_AnnounceLevel ||
5759            MessageLevel == DAC960_InfoLevel)
5760     {
5761       if (!Controller->ControllerInitialized)
5762         {
5763           if (DAC960_CheckStatusBuffer(Controller, Length))
5764             {
5765               strcpy(&Controller->CombinedStatusBuffer
5766                                   [Controller->InitialStatusLength],
5767                      Buffer);
5768               Controller->InitialStatusLength += Length;
5769               Controller->CurrentStatusBuffer =
5770                 &Controller->CombinedStatusBuffer
5771                              [Controller->InitialStatusLength + 1];
5772             }
5773           if (MessageLevel == DAC960_AnnounceLevel)
5774             {
5775               static int AnnouncementLines = 0;
5776               if (++AnnouncementLines <= 2)
5777                 printk("%sDAC960: %s", DAC960_MessageLevelMap[MessageLevel],
5778                        Buffer);
5779             }
5780           else
5781             {
5782               if (BeginningOfLine)
5783                 {
5784                   if (Buffer[0] != '\n' || Length > 1)
5785                     printk("%sDAC960#%d: %s",
5786                            DAC960_MessageLevelMap[MessageLevel],
5787                            Controller->ControllerNumber, Buffer);
5788                 }
5789               else printk("%s", Buffer);
5790             }
5791         }
5792       else if (DAC960_CheckStatusBuffer(Controller, Length))
5793         {
5794           strcpy(&Controller->CurrentStatusBuffer[
5795                     Controller->CurrentStatusLength], Buffer);
5796           Controller->CurrentStatusLength += Length;
5797         }
5798     }
5799   else if (MessageLevel == DAC960_ProgressLevel)
5800     {
5801       strcpy(Controller->ProgressBuffer, Buffer);
5802       Controller->ProgressBufferLength = Length;
5803       if (Controller->EphemeralProgressMessage)
5804         {
5805           if (time_after_eq(jiffies, Controller->LastProgressReportTime
5806               + DAC960_ProgressReportingInterval))
5807             {
5808               printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5809                      Controller->ControllerNumber, Buffer);
5810               Controller->LastProgressReportTime = jiffies;
5811             }
5812         }
5813       else printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5814                   Controller->ControllerNumber, Buffer);
5815     }
5816   else if (MessageLevel == DAC960_UserCriticalLevel)
5817     {
5818       strcpy(&Controller->UserStatusBuffer[Controller->UserStatusLength],
5819              Buffer);
5820       Controller->UserStatusLength += Length;
5821       if (Buffer[0] != '\n' || Length > 1)
5822         printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5823                Controller->ControllerNumber, Buffer);
5824     }
5825   else
5826     {
5827       if (BeginningOfLine)
5828         printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5829                Controller->ControllerNumber, Buffer);
5830       else printk("%s", Buffer);
5831     }
5832   BeginningOfLine = (Buffer[Length-1] == '\n');
5833 }
5834
5835
5836 /*
5837   DAC960_ParsePhysicalDevice parses spaces followed by a Physical Device
5838   Channel:TargetID specification from a User Command string.  It updates
5839   Channel and TargetID and returns true on success and false on failure.
5840 */
5841
5842 static bool DAC960_ParsePhysicalDevice(DAC960_Controller_T *Controller,
5843                                           char *UserCommandString,
5844                                           unsigned char *Channel,
5845                                           unsigned char *TargetID)
5846 {
5847   char *NewUserCommandString = UserCommandString;
5848   unsigned long XChannel, XTargetID;
5849   while (*UserCommandString == ' ') UserCommandString++;
5850   if (UserCommandString == NewUserCommandString)
5851     return false;
5852   XChannel = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5853   if (NewUserCommandString == UserCommandString ||
5854       *NewUserCommandString != ':' ||
5855       XChannel >= Controller->Channels)
5856     return false;
5857   UserCommandString = ++NewUserCommandString;
5858   XTargetID = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5859   if (NewUserCommandString == UserCommandString ||
5860       *NewUserCommandString != '\0' ||
5861       XTargetID >= Controller->Targets)
5862     return false;
5863   *Channel = XChannel;
5864   *TargetID = XTargetID;
5865   return true;
5866 }
5867
5868
5869 /*
5870   DAC960_ParseLogicalDrive parses spaces followed by a Logical Drive Number
5871   specification from a User Command string.  It updates LogicalDriveNumber and
5872   returns true on success and false on failure.
5873 */
5874
5875 static bool DAC960_ParseLogicalDrive(DAC960_Controller_T *Controller,
5876                                         char *UserCommandString,
5877                                         unsigned char *LogicalDriveNumber)
5878 {
5879   char *NewUserCommandString = UserCommandString;
5880   unsigned long XLogicalDriveNumber;
5881   while (*UserCommandString == ' ') UserCommandString++;
5882   if (UserCommandString == NewUserCommandString)
5883     return false;
5884   XLogicalDriveNumber =
5885     simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5886   if (NewUserCommandString == UserCommandString ||
5887       *NewUserCommandString != '\0' ||
5888       XLogicalDriveNumber > DAC960_MaxLogicalDrives - 1)
5889     return false;
5890   *LogicalDriveNumber = XLogicalDriveNumber;
5891   return true;
5892 }
5893
5894
5895 /*
5896   DAC960_V1_SetDeviceState sets the Device State for a Physical Device for
5897   DAC960 V1 Firmware Controllers.
5898 */
5899
5900 static void DAC960_V1_SetDeviceState(DAC960_Controller_T *Controller,
5901                                      DAC960_Command_T *Command,
5902                                      unsigned char Channel,
5903                                      unsigned char TargetID,
5904                                      DAC960_V1_PhysicalDeviceState_T
5905                                        DeviceState,
5906                                      const unsigned char *DeviceStateString)
5907 {
5908   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5909   CommandMailbox->Type3D.CommandOpcode = DAC960_V1_StartDevice;
5910   CommandMailbox->Type3D.Channel = Channel;
5911   CommandMailbox->Type3D.TargetID = TargetID;
5912   CommandMailbox->Type3D.DeviceState = DeviceState;
5913   CommandMailbox->Type3D.Modifier = 0;
5914   DAC960_ExecuteCommand(Command);
5915   switch (Command->V1.CommandStatus)
5916     {
5917     case DAC960_V1_NormalCompletion:
5918       DAC960_UserCritical("%s of Physical Device %d:%d Succeeded\n", Controller,
5919                           DeviceStateString, Channel, TargetID);
5920       break;
5921     case DAC960_V1_UnableToStartDevice:
5922       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5923                           "Unable to Start Device\n", Controller,
5924                           DeviceStateString, Channel, TargetID);
5925       break;
5926     case DAC960_V1_NoDeviceAtAddress:
5927       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5928                           "No Device at Address\n", Controller,
5929                           DeviceStateString, Channel, TargetID);
5930       break;
5931     case DAC960_V1_InvalidChannelOrTargetOrModifier:
5932       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5933                           "Invalid Channel or Target or Modifier\n",
5934                           Controller, DeviceStateString, Channel, TargetID);
5935       break;
5936     case DAC960_V1_ChannelBusy:
5937       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5938                           "Channel Busy\n", Controller,
5939                           DeviceStateString, Channel, TargetID);
5940       break;
5941     default:
5942       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5943                           "Unexpected Status %04X\n", Controller,
5944                           DeviceStateString, Channel, TargetID,
5945                           Command->V1.CommandStatus);
5946       break;
5947     }
5948 }
5949
5950
5951 /*
5952   DAC960_V1_ExecuteUserCommand executes a User Command for DAC960 V1 Firmware
5953   Controllers.
5954 */
5955
5956 static bool DAC960_V1_ExecuteUserCommand(DAC960_Controller_T *Controller,
5957                                             unsigned char *UserCommand)
5958 {
5959   DAC960_Command_T *Command;
5960   DAC960_V1_CommandMailbox_T *CommandMailbox;
5961   unsigned long flags;
5962   unsigned char Channel, TargetID, LogicalDriveNumber;
5963
5964   spin_lock_irqsave(&Controller->queue_lock, flags);
5965   while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
5966     DAC960_WaitForCommand(Controller);
5967   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5968   Controller->UserStatusLength = 0;
5969   DAC960_V1_ClearCommand(Command);
5970   Command->CommandType = DAC960_ImmediateCommand;
5971   CommandMailbox = &Command->V1.CommandMailbox;
5972   if (strcmp(UserCommand, "flush-cache") == 0)
5973     {
5974       CommandMailbox->Type3.CommandOpcode = DAC960_V1_Flush;
5975       DAC960_ExecuteCommand(Command);
5976       DAC960_UserCritical("Cache Flush Completed\n", Controller);
5977     }
5978   else if (strncmp(UserCommand, "kill", 4) == 0 &&
5979            DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
5980                                       &Channel, &TargetID))
5981     {
5982       DAC960_V1_DeviceState_T *DeviceState =
5983         &Controller->V1.DeviceState[Channel][TargetID];
5984       if (DeviceState->Present &&
5985           DeviceState->DeviceType == DAC960_V1_DiskType &&
5986           DeviceState->DeviceState != DAC960_V1_Device_Dead)
5987         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
5988                                  DAC960_V1_Device_Dead, "Kill");
5989       else DAC960_UserCritical("Kill of Physical Device %d:%d Illegal\n",
5990                                Controller, Channel, TargetID);
5991     }
5992   else if (strncmp(UserCommand, "make-online", 11) == 0 &&
5993            DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
5994                                       &Channel, &TargetID))
5995     {
5996       DAC960_V1_DeviceState_T *DeviceState =
5997         &Controller->V1.DeviceState[Channel][TargetID];
5998       if (DeviceState->Present &&
5999           DeviceState->DeviceType == DAC960_V1_DiskType &&
6000           DeviceState->DeviceState == DAC960_V1_Device_Dead)
6001         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
6002                                  DAC960_V1_Device_Online, "Make Online");
6003       else DAC960_UserCritical("Make Online of Physical Device %d:%d Illegal\n",
6004                                Controller, Channel, TargetID);
6005
6006     }
6007   else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
6008            DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
6009                                       &Channel, &TargetID))
6010     {
6011       DAC960_V1_DeviceState_T *DeviceState =
6012         &Controller->V1.DeviceState[Channel][TargetID];
6013       if (DeviceState->Present &&
6014           DeviceState->DeviceType == DAC960_V1_DiskType &&
6015           DeviceState->DeviceState == DAC960_V1_Device_Dead)
6016         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
6017                                  DAC960_V1_Device_Standby, "Make Standby");
6018       else DAC960_UserCritical("Make Standby of Physical "
6019                                "Device %d:%d Illegal\n",
6020                                Controller, Channel, TargetID);
6021     }
6022   else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
6023            DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
6024                                       &Channel, &TargetID))
6025     {
6026       CommandMailbox->Type3D.CommandOpcode = DAC960_V1_RebuildAsync;
6027       CommandMailbox->Type3D.Channel = Channel;
6028       CommandMailbox->Type3D.TargetID = TargetID;
6029       DAC960_ExecuteCommand(Command);
6030       switch (Command->V1.CommandStatus)
6031         {
6032         case DAC960_V1_NormalCompletion:
6033           DAC960_UserCritical("Rebuild of Physical Device %d:%d Initiated\n",
6034                               Controller, Channel, TargetID);
6035           break;
6036         case DAC960_V1_AttemptToRebuildOnlineDrive:
6037           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6038                               "Attempt to Rebuild Online or "
6039                               "Unresponsive Drive\n",
6040                               Controller, Channel, TargetID);
6041           break;
6042         case DAC960_V1_NewDiskFailedDuringRebuild:
6043           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6044                               "New Disk Failed During Rebuild\n",
6045                               Controller, Channel, TargetID);
6046           break;
6047         case DAC960_V1_InvalidDeviceAddress:
6048           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6049                               "Invalid Device Address\n",
6050                               Controller, Channel, TargetID);
6051           break;
6052         case DAC960_V1_RebuildOrCheckAlreadyInProgress:
6053           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6054                               "Rebuild or Consistency Check Already "
6055                               "in Progress\n", Controller, Channel, TargetID);
6056           break;
6057         default:
6058           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6059                               "Unexpected Status %04X\n", Controller,
6060                               Channel, TargetID, Command->V1.CommandStatus);
6061           break;
6062         }
6063     }
6064   else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
6065            DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
6066                                     &LogicalDriveNumber))
6067     {
6068       CommandMailbox->Type3C.CommandOpcode = DAC960_V1_CheckConsistencyAsync;
6069       CommandMailbox->Type3C.LogicalDriveNumber = LogicalDriveNumber;
6070       CommandMailbox->Type3C.AutoRestore = true;
6071       DAC960_ExecuteCommand(Command);
6072       switch (Command->V1.CommandStatus)
6073         {
6074         case DAC960_V1_NormalCompletion:
6075           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6076                               "(/dev/rd/c%dd%d) Initiated\n",
6077                               Controller, LogicalDriveNumber,
6078                               Controller->ControllerNumber,
6079                               LogicalDriveNumber);
6080           break;
6081         case DAC960_V1_DependentDiskIsDead:
6082           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6083                               "(/dev/rd/c%dd%d) Failed - "
6084                               "Dependent Physical Device is DEAD\n",
6085                               Controller, LogicalDriveNumber,
6086                               Controller->ControllerNumber,
6087                               LogicalDriveNumber);
6088           break;
6089         case DAC960_V1_InvalidOrNonredundantLogicalDrive:
6090           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6091                               "(/dev/rd/c%dd%d) Failed - "
6092                               "Invalid or Nonredundant Logical Drive\n",
6093                               Controller, LogicalDriveNumber,
6094                               Controller->ControllerNumber,
6095                               LogicalDriveNumber);
6096           break;
6097         case DAC960_V1_RebuildOrCheckAlreadyInProgress:
6098           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6099                               "(/dev/rd/c%dd%d) Failed - Rebuild or "
6100                               "Consistency Check Already in Progress\n",
6101                               Controller, LogicalDriveNumber,
6102                               Controller->ControllerNumber,
6103                               LogicalDriveNumber);
6104           break;
6105         default:
6106           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6107                               "(/dev/rd/c%dd%d) Failed - "
6108                               "Unexpected Status %04X\n",
6109                               Controller, LogicalDriveNumber,
6110                               Controller->ControllerNumber,
6111                               LogicalDriveNumber, Command->V1.CommandStatus);
6112           break;
6113         }
6114     }
6115   else if (strcmp(UserCommand, "cancel-rebuild") == 0 ||
6116            strcmp(UserCommand, "cancel-consistency-check") == 0)
6117     {
6118       /*
6119         the OldRebuildRateConstant is never actually used
6120         once its value is retrieved from the controller.
6121        */
6122       unsigned char *OldRebuildRateConstant;
6123       dma_addr_t OldRebuildRateConstantDMA;
6124
6125       OldRebuildRateConstant = pci_alloc_consistent( Controller->PCIDevice,
6126                 sizeof(char), &OldRebuildRateConstantDMA);
6127       if (OldRebuildRateConstant == NULL) {
6128          DAC960_UserCritical("Cancellation of Rebuild or "
6129                              "Consistency Check Failed - "
6130                              "Out of Memory",
6131                              Controller);
6132          goto failure;
6133       }
6134       CommandMailbox->Type3R.CommandOpcode = DAC960_V1_RebuildControl;
6135       CommandMailbox->Type3R.RebuildRateConstant = 0xFF;
6136       CommandMailbox->Type3R.BusAddress = OldRebuildRateConstantDMA;
6137       DAC960_ExecuteCommand(Command);
6138       switch (Command->V1.CommandStatus)
6139         {
6140         case DAC960_V1_NormalCompletion:
6141           DAC960_UserCritical("Rebuild or Consistency Check Cancelled\n",
6142                               Controller);
6143           break;
6144         default:
6145           DAC960_UserCritical("Cancellation of Rebuild or "
6146                               "Consistency Check Failed - "
6147                               "Unexpected Status %04X\n",
6148                               Controller, Command->V1.CommandStatus);
6149           break;
6150         }
6151 failure:
6152         pci_free_consistent(Controller->PCIDevice, sizeof(char),
6153                 OldRebuildRateConstant, OldRebuildRateConstantDMA);
6154     }
6155   else DAC960_UserCritical("Illegal User Command: '%s'\n",
6156                            Controller, UserCommand);
6157
6158   spin_lock_irqsave(&Controller->queue_lock, flags);
6159   DAC960_DeallocateCommand(Command);
6160   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6161   return true;
6162 }
6163
6164
6165 /*
6166   DAC960_V2_TranslatePhysicalDevice translates a Physical Device Channel and
6167   TargetID into a Logical Device.  It returns true on success and false
6168   on failure.
6169 */
6170
6171 static bool DAC960_V2_TranslatePhysicalDevice(DAC960_Command_T *Command,
6172                                                  unsigned char Channel,
6173                                                  unsigned char TargetID,
6174                                                  unsigned short
6175                                                    *LogicalDeviceNumber)
6176 {
6177   DAC960_V2_CommandMailbox_T SavedCommandMailbox, *CommandMailbox;
6178   DAC960_Controller_T *Controller =  Command->Controller;
6179
6180   CommandMailbox = &Command->V2.CommandMailbox;
6181   memcpy(&SavedCommandMailbox, CommandMailbox,
6182          sizeof(DAC960_V2_CommandMailbox_T));
6183
6184   CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
6185   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
6186                                     .DataTransferControllerToHost = true;
6187   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
6188                                     .NoAutoRequestSense = true;
6189   CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
6190     sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
6191   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
6192   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
6193   CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
6194     DAC960_V2_TranslatePhysicalToLogicalDevice;
6195   CommandMailbox->Common.DataTransferMemoryAddress
6196                         .ScatterGatherSegments[0]
6197                         .SegmentDataPointer =
6198                 Controller->V2.PhysicalToLogicalDeviceDMA;
6199   CommandMailbox->Common.DataTransferMemoryAddress
6200                         .ScatterGatherSegments[0]
6201                         .SegmentByteCount =
6202                 CommandMailbox->Common.DataTransferSize;
6203
6204   DAC960_ExecuteCommand(Command);
6205   *LogicalDeviceNumber = Controller->V2.PhysicalToLogicalDevice->LogicalDeviceNumber;
6206
6207   memcpy(CommandMailbox, &SavedCommandMailbox,
6208          sizeof(DAC960_V2_CommandMailbox_T));
6209   return (Command->V2.CommandStatus == DAC960_V2_NormalCompletion);
6210 }
6211
6212
6213 /*
6214   DAC960_V2_ExecuteUserCommand executes a User Command for DAC960 V2 Firmware
6215   Controllers.
6216 */
6217
6218 static bool DAC960_V2_ExecuteUserCommand(DAC960_Controller_T *Controller,
6219                                             unsigned char *UserCommand)
6220 {
6221   DAC960_Command_T *Command;
6222   DAC960_V2_CommandMailbox_T *CommandMailbox;
6223   unsigned long flags;
6224   unsigned char Channel, TargetID, LogicalDriveNumber;
6225   unsigned short LogicalDeviceNumber;
6226
6227   spin_lock_irqsave(&Controller->queue_lock, flags);
6228   while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6229     DAC960_WaitForCommand(Controller);
6230   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6231   Controller->UserStatusLength = 0;
6232   DAC960_V2_ClearCommand(Command);
6233   Command->CommandType = DAC960_ImmediateCommand;
6234   CommandMailbox = &Command->V2.CommandMailbox;
6235   CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
6236   CommandMailbox->Common.CommandControlBits.DataTransferControllerToHost = true;
6237   CommandMailbox->Common.CommandControlBits.NoAutoRequestSense = true;
6238   if (strcmp(UserCommand, "flush-cache") == 0)
6239     {
6240       CommandMailbox->DeviceOperation.IOCTL_Opcode = DAC960_V2_PauseDevice;
6241       CommandMailbox->DeviceOperation.OperationDevice =
6242         DAC960_V2_RAID_Controller;
6243       DAC960_ExecuteCommand(Command);
6244       DAC960_UserCritical("Cache Flush Completed\n", Controller);
6245     }
6246   else if (strncmp(UserCommand, "kill", 4) == 0 &&
6247            DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
6248                                       &Channel, &TargetID) &&
6249            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6250                                              &LogicalDeviceNumber))
6251     {
6252       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6253         LogicalDeviceNumber;
6254       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6255         DAC960_V2_SetDeviceState;
6256       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6257         DAC960_V2_Device_Dead;
6258       DAC960_ExecuteCommand(Command);
6259       DAC960_UserCritical("Kill of Physical Device %d:%d %s\n",
6260                           Controller, Channel, TargetID,
6261                           (Command->V2.CommandStatus
6262                            == DAC960_V2_NormalCompletion
6263                            ? "Succeeded" : "Failed"));
6264     }
6265   else if (strncmp(UserCommand, "make-online", 11) == 0 &&
6266            DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
6267                                       &Channel, &TargetID) &&
6268            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6269                                              &LogicalDeviceNumber))
6270     {
6271       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6272         LogicalDeviceNumber;
6273       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6274         DAC960_V2_SetDeviceState;
6275       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6276         DAC960_V2_Device_Online;
6277       DAC960_ExecuteCommand(Command);
6278       DAC960_UserCritical("Make Online of Physical Device %d:%d %s\n",
6279                           Controller, Channel, TargetID,
6280                           (Command->V2.CommandStatus
6281                            == DAC960_V2_NormalCompletion
6282                            ? "Succeeded" : "Failed"));
6283     }
6284   else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
6285            DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
6286                                       &Channel, &TargetID) &&
6287            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6288                                              &LogicalDeviceNumber))
6289     {
6290       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6291         LogicalDeviceNumber;
6292       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6293         DAC960_V2_SetDeviceState;
6294       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6295         DAC960_V2_Device_Standby;
6296       DAC960_ExecuteCommand(Command);
6297       DAC960_UserCritical("Make Standby of Physical Device %d:%d %s\n",
6298                           Controller, Channel, TargetID,
6299                           (Command->V2.CommandStatus
6300                            == DAC960_V2_NormalCompletion
6301                            ? "Succeeded" : "Failed"));
6302     }
6303   else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
6304            DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
6305                                       &Channel, &TargetID) &&
6306            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6307                                              &LogicalDeviceNumber))
6308     {
6309       CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
6310         LogicalDeviceNumber;
6311       CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
6312         DAC960_V2_RebuildDeviceStart;
6313       DAC960_ExecuteCommand(Command);
6314       DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
6315                           Controller, Channel, TargetID,
6316                           (Command->V2.CommandStatus
6317                            == DAC960_V2_NormalCompletion
6318                            ? "Initiated" : "Not Initiated"));
6319     }
6320   else if (strncmp(UserCommand, "cancel-rebuild", 14) == 0 &&
6321            DAC960_ParsePhysicalDevice(Controller, &UserCommand[14],
6322                                       &Channel, &TargetID) &&
6323            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6324                                              &LogicalDeviceNumber))
6325     {
6326       CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
6327         LogicalDeviceNumber;
6328       CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
6329         DAC960_V2_RebuildDeviceStop;
6330       DAC960_ExecuteCommand(Command);
6331       DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
6332                           Controller, Channel, TargetID,
6333                           (Command->V2.CommandStatus
6334                            == DAC960_V2_NormalCompletion
6335                            ? "Cancelled" : "Not Cancelled"));
6336     }
6337   else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
6338            DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
6339                                     &LogicalDriveNumber))
6340     {
6341       CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
6342         LogicalDriveNumber;
6343       CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
6344         DAC960_V2_ConsistencyCheckStart;
6345       CommandMailbox->ConsistencyCheck.RestoreConsistency = true;
6346       CommandMailbox->ConsistencyCheck.InitializedAreaOnly = false;
6347       DAC960_ExecuteCommand(Command);
6348       DAC960_UserCritical("Consistency Check of Logical Drive %d "
6349                           "(/dev/rd/c%dd%d) %s\n",
6350                           Controller, LogicalDriveNumber,
6351                           Controller->ControllerNumber,
6352                           LogicalDriveNumber,
6353                           (Command->V2.CommandStatus
6354                            == DAC960_V2_NormalCompletion
6355                            ? "Initiated" : "Not Initiated"));
6356     }
6357   else if (strncmp(UserCommand, "cancel-consistency-check", 24) == 0 &&
6358            DAC960_ParseLogicalDrive(Controller, &UserCommand[24],
6359                                     &LogicalDriveNumber))
6360     {
6361       CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
6362         LogicalDriveNumber;
6363       CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
6364         DAC960_V2_ConsistencyCheckStop;
6365       DAC960_ExecuteCommand(Command);
6366       DAC960_UserCritical("Consistency Check of Logical Drive %d "
6367                           "(/dev/rd/c%dd%d) %s\n",
6368                           Controller, LogicalDriveNumber,
6369                           Controller->ControllerNumber,
6370                           LogicalDriveNumber,
6371                           (Command->V2.CommandStatus
6372                            == DAC960_V2_NormalCompletion
6373                            ? "Cancelled" : "Not Cancelled"));
6374     }
6375   else if (strcmp(UserCommand, "perform-discovery") == 0)
6376     {
6377       CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_StartDiscovery;
6378       DAC960_ExecuteCommand(Command);
6379       DAC960_UserCritical("Discovery %s\n", Controller,
6380                           (Command->V2.CommandStatus
6381                            == DAC960_V2_NormalCompletion
6382                            ? "Initiated" : "Not Initiated"));
6383       if (Command->V2.CommandStatus == DAC960_V2_NormalCompletion)
6384         {
6385           CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
6386           CommandMailbox->ControllerInfo.CommandControlBits
6387                                         .DataTransferControllerToHost = true;
6388           CommandMailbox->ControllerInfo.CommandControlBits
6389                                         .NoAutoRequestSense = true;
6390           CommandMailbox->ControllerInfo.DataTransferSize =
6391             sizeof(DAC960_V2_ControllerInfo_T);
6392           CommandMailbox->ControllerInfo.ControllerNumber = 0;
6393           CommandMailbox->ControllerInfo.IOCTL_Opcode =
6394             DAC960_V2_GetControllerInfo;
6395           /*
6396            * How does this NOT race with the queued Monitoring
6397            * usage of this structure?
6398            */
6399           CommandMailbox->ControllerInfo.DataTransferMemoryAddress
6400                                         .ScatterGatherSegments[0]
6401                                         .SegmentDataPointer =
6402             Controller->V2.NewControllerInformationDMA;
6403           CommandMailbox->ControllerInfo.DataTransferMemoryAddress
6404                                         .ScatterGatherSegments[0]
6405                                         .SegmentByteCount =
6406             CommandMailbox->ControllerInfo.DataTransferSize;
6407           DAC960_ExecuteCommand(Command);
6408           while (Controller->V2.NewControllerInformation->PhysicalScanActive)
6409             {
6410               DAC960_ExecuteCommand(Command);
6411               sleep_on_timeout(&Controller->CommandWaitQueue, HZ);
6412             }
6413           DAC960_UserCritical("Discovery Completed\n", Controller);
6414         }
6415     }
6416   else if (strcmp(UserCommand, "suppress-enclosure-messages") == 0)
6417     Controller->SuppressEnclosureMessages = true;
6418   else DAC960_UserCritical("Illegal User Command: '%s'\n",
6419                            Controller, UserCommand);
6420
6421   spin_lock_irqsave(&Controller->queue_lock, flags);
6422   DAC960_DeallocateCommand(Command);
6423   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6424   return true;
6425 }
6426
6427
6428 /*
6429   DAC960_ProcReadStatus implements reading /proc/rd/status.
6430 */
6431
6432 static int DAC960_ProcReadStatus(char *Page, char **Start, off_t Offset,
6433                                  int Count, int *EOF, void *Data)
6434 {
6435   unsigned char *StatusMessage = "OK\n";
6436   int ControllerNumber, BytesAvailable;
6437   for (ControllerNumber = 0;
6438        ControllerNumber < DAC960_ControllerCount;
6439        ControllerNumber++)
6440     {
6441       DAC960_Controller_T *Controller = DAC960_Controllers[ControllerNumber];
6442       if (Controller == NULL) continue;
6443       if (Controller->MonitoringAlertMode)
6444         {
6445           StatusMessage = "ALERT\n";
6446           break;
6447         }
6448     }
6449   BytesAvailable = strlen(StatusMessage) - Offset;
6450   if (Count >= BytesAvailable)
6451     {
6452       Count = BytesAvailable;
6453       *EOF = true;
6454     }
6455   if (Count <= 0) return 0;
6456   *Start = Page;
6457   memcpy(Page, &StatusMessage[Offset], Count);
6458   return Count;
6459 }
6460
6461
6462 /*
6463   DAC960_ProcReadInitialStatus implements reading /proc/rd/cN/initial_status.
6464 */
6465
6466 static int DAC960_ProcReadInitialStatus(char *Page, char **Start, off_t Offset,
6467                                         int Count, int *EOF, void *Data)
6468 {
6469   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6470   int BytesAvailable = Controller->InitialStatusLength - Offset;
6471   if (Count >= BytesAvailable)
6472     {
6473       Count = BytesAvailable;
6474       *EOF = true;
6475     }
6476   if (Count <= 0) return 0;
6477   *Start = Page;
6478   memcpy(Page, &Controller->CombinedStatusBuffer[Offset], Count);
6479   return Count;
6480 }
6481
6482
6483 /*
6484   DAC960_ProcReadCurrentStatus implements reading /proc/rd/cN/current_status.
6485 */
6486
6487 static int DAC960_ProcReadCurrentStatus(char *Page, char **Start, off_t Offset,
6488                                         int Count, int *EOF, void *Data)
6489 {
6490   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6491   unsigned char *StatusMessage =
6492     "No Rebuild or Consistency Check in Progress\n";
6493   int ProgressMessageLength = strlen(StatusMessage);
6494   int BytesAvailable;
6495   if (jiffies != Controller->LastCurrentStatusTime)
6496     {
6497       Controller->CurrentStatusLength = 0;
6498       DAC960_AnnounceDriver(Controller);
6499       DAC960_ReportControllerConfiguration(Controller);
6500       DAC960_ReportDeviceConfiguration(Controller);
6501       if (Controller->ProgressBufferLength > 0)
6502         ProgressMessageLength = Controller->ProgressBufferLength;
6503       if (DAC960_CheckStatusBuffer(Controller, 2 + ProgressMessageLength))
6504         {
6505           unsigned char *CurrentStatusBuffer = Controller->CurrentStatusBuffer;
6506           CurrentStatusBuffer[Controller->CurrentStatusLength++] = ' ';
6507           CurrentStatusBuffer[Controller->CurrentStatusLength++] = ' ';
6508           if (Controller->ProgressBufferLength > 0)
6509             strcpy(&CurrentStatusBuffer[Controller->CurrentStatusLength],
6510                    Controller->ProgressBuffer);
6511           else
6512             strcpy(&CurrentStatusBuffer[Controller->CurrentStatusLength],
6513                    StatusMessage);
6514           Controller->CurrentStatusLength += ProgressMessageLength;
6515         }
6516       Controller->LastCurrentStatusTime = jiffies;
6517     }
6518   BytesAvailable = Controller->CurrentStatusLength - Offset;
6519   if (Count >= BytesAvailable)
6520     {
6521       Count = BytesAvailable;
6522       *EOF = true;
6523     }
6524   if (Count <= 0) return 0;
6525   *Start = Page;
6526   memcpy(Page, &Controller->CurrentStatusBuffer[Offset], Count);
6527   return Count;
6528 }
6529
6530
6531 /*
6532   DAC960_ProcReadUserCommand implements reading /proc/rd/cN/user_command.
6533 */
6534
6535 static int DAC960_ProcReadUserCommand(char *Page, char **Start, off_t Offset,
6536                                       int Count, int *EOF, void *Data)
6537 {
6538   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6539   int BytesAvailable = Controller->UserStatusLength - Offset;
6540   if (Count >= BytesAvailable)
6541     {
6542       Count = BytesAvailable;
6543       *EOF = true;
6544     }
6545   if (Count <= 0) return 0;
6546   *Start = Page;
6547   memcpy(Page, &Controller->UserStatusBuffer[Offset], Count);
6548   return Count;
6549 }
6550
6551
6552 /*
6553   DAC960_ProcWriteUserCommand implements writing /proc/rd/cN/user_command.
6554 */
6555
6556 static int DAC960_ProcWriteUserCommand(struct file *file,
6557                                        const char __user *Buffer,
6558                                        unsigned long Count, void *Data)
6559 {
6560   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6561   unsigned char CommandBuffer[80];
6562   int Length;
6563   if (Count > sizeof(CommandBuffer)-1) return -EINVAL;
6564   if (copy_from_user(CommandBuffer, Buffer, Count)) return -EFAULT;
6565   CommandBuffer[Count] = '\0';
6566   Length = strlen(CommandBuffer);
6567   if (CommandBuffer[Length-1] == '\n')
6568     CommandBuffer[--Length] = '\0';
6569   if (Controller->FirmwareType == DAC960_V1_Controller)
6570     return (DAC960_V1_ExecuteUserCommand(Controller, CommandBuffer)
6571             ? Count : -EBUSY);
6572   else
6573     return (DAC960_V2_ExecuteUserCommand(Controller, CommandBuffer)
6574             ? Count : -EBUSY);
6575 }
6576
6577
6578 /*
6579   DAC960_CreateProcEntries creates the /proc/rd/... entries for the
6580   DAC960 Driver.
6581 */
6582
6583 static void DAC960_CreateProcEntries(DAC960_Controller_T *Controller)
6584 {
6585         struct proc_dir_entry *StatusProcEntry;
6586         struct proc_dir_entry *ControllerProcEntry;
6587         struct proc_dir_entry *UserCommandProcEntry;
6588
6589         if (DAC960_ProcDirectoryEntry == NULL) {
6590                 DAC960_ProcDirectoryEntry = proc_mkdir("rd", NULL);
6591                 StatusProcEntry = create_proc_read_entry("status", 0,
6592                                            DAC960_ProcDirectoryEntry,
6593                                            DAC960_ProcReadStatus, NULL);
6594         }
6595
6596       sprintf(Controller->ControllerName, "c%d", Controller->ControllerNumber);
6597       ControllerProcEntry = proc_mkdir(Controller->ControllerName,
6598                                        DAC960_ProcDirectoryEntry);
6599       create_proc_read_entry("initial_status", 0, ControllerProcEntry,
6600                              DAC960_ProcReadInitialStatus, Controller);
6601       create_proc_read_entry("current_status", 0, ControllerProcEntry,
6602                              DAC960_ProcReadCurrentStatus, Controller);
6603       UserCommandProcEntry =
6604         create_proc_read_entry("user_command", S_IWUSR | S_IRUSR,
6605                                ControllerProcEntry, DAC960_ProcReadUserCommand,
6606                                Controller);
6607       UserCommandProcEntry->write_proc = DAC960_ProcWriteUserCommand;
6608       Controller->ControllerProcEntry = ControllerProcEntry;
6609 }
6610
6611
6612 /*
6613   DAC960_DestroyProcEntries destroys the /proc/rd/... entries for the
6614   DAC960 Driver.
6615 */
6616
6617 static void DAC960_DestroyProcEntries(DAC960_Controller_T *Controller)
6618 {
6619       if (Controller->ControllerProcEntry == NULL)
6620               return;
6621       remove_proc_entry("initial_status", Controller->ControllerProcEntry);
6622       remove_proc_entry("current_status", Controller->ControllerProcEntry);
6623       remove_proc_entry("user_command", Controller->ControllerProcEntry);
6624       remove_proc_entry(Controller->ControllerName, DAC960_ProcDirectoryEntry);
6625       Controller->ControllerProcEntry = NULL;
6626 }
6627
6628 #ifdef DAC960_GAM_MINOR
6629
6630 /*
6631  * DAC960_gam_ioctl is the ioctl function for performing RAID operations.
6632 */
6633
6634 static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
6635                             unsigned int Request, unsigned long Argument)
6636 {
6637   int ErrorCode = 0;
6638   if (!capable(CAP_SYS_ADMIN)) return -EACCES;
6639   switch (Request)
6640     {
6641     case DAC960_IOCTL_GET_CONTROLLER_COUNT:
6642       return DAC960_ControllerCount;
6643     case DAC960_IOCTL_GET_CONTROLLER_INFO:
6644       {
6645         DAC960_ControllerInfo_T __user *UserSpaceControllerInfo =
6646           (DAC960_ControllerInfo_T __user *) Argument;
6647         DAC960_ControllerInfo_T ControllerInfo;
6648         DAC960_Controller_T *Controller;
6649         int ControllerNumber;
6650         if (UserSpaceControllerInfo == NULL) return -EINVAL;
6651         ErrorCode = get_user(ControllerNumber,
6652                              &UserSpaceControllerInfo->ControllerNumber);
6653         if (ErrorCode != 0) return ErrorCode;
6654         if (ControllerNumber < 0 ||
6655             ControllerNumber > DAC960_ControllerCount - 1)
6656           return -ENXIO;
6657         Controller = DAC960_Controllers[ControllerNumber];
6658         if (Controller == NULL) return -ENXIO;
6659         memset(&ControllerInfo, 0, sizeof(DAC960_ControllerInfo_T));
6660         ControllerInfo.ControllerNumber = ControllerNumber;
6661         ControllerInfo.FirmwareType = Controller->FirmwareType;
6662         ControllerInfo.Channels = Controller->Channels;
6663         ControllerInfo.Targets = Controller->Targets;
6664         ControllerInfo.PCI_Bus = Controller->Bus;
6665         ControllerInfo.PCI_Device = Controller->Device;
6666         ControllerInfo.PCI_Function = Controller->Function;
6667         ControllerInfo.IRQ_Channel = Controller->IRQ_Channel;
6668         ControllerInfo.PCI_Address = Controller->PCI_Address;
6669         strcpy(ControllerInfo.ModelName, Controller->ModelName);
6670         strcpy(ControllerInfo.FirmwareVersion, Controller->FirmwareVersion);
6671         return (copy_to_user(UserSpaceControllerInfo, &ControllerInfo,
6672                              sizeof(DAC960_ControllerInfo_T)) ? -EFAULT : 0);
6673       }
6674     case DAC960_IOCTL_V1_EXECUTE_COMMAND:
6675       {
6676         DAC960_V1_UserCommand_T __user *UserSpaceUserCommand =
6677           (DAC960_V1_UserCommand_T __user *) Argument;
6678         DAC960_V1_UserCommand_T UserCommand;
6679         DAC960_Controller_T *Controller;
6680         DAC960_Command_T *Command = NULL;
6681         DAC960_V1_CommandOpcode_T CommandOpcode;
6682         DAC960_V1_CommandStatus_T CommandStatus;
6683         DAC960_V1_DCDB_T DCDB;
6684         DAC960_V1_DCDB_T *DCDB_IOBUF = NULL;
6685         dma_addr_t      DCDB_IOBUFDMA;
6686         unsigned long flags;
6687         int ControllerNumber, DataTransferLength;
6688         unsigned char *DataTransferBuffer = NULL;
6689         dma_addr_t DataTransferBufferDMA;
6690         if (UserSpaceUserCommand == NULL) return -EINVAL;
6691         if (copy_from_user(&UserCommand, UserSpaceUserCommand,
6692                                    sizeof(DAC960_V1_UserCommand_T))) {
6693                 ErrorCode = -EFAULT;
6694                 goto Failure1a;
6695         }
6696         ControllerNumber = UserCommand.ControllerNumber;
6697         if (ControllerNumber < 0 ||
6698             ControllerNumber > DAC960_ControllerCount - 1)
6699           return -ENXIO;
6700         Controller = DAC960_Controllers[ControllerNumber];
6701         if (Controller == NULL) return -ENXIO;
6702         if (Controller->FirmwareType != DAC960_V1_Controller) return -EINVAL;
6703         CommandOpcode = UserCommand.CommandMailbox.Common.CommandOpcode;
6704         DataTransferLength = UserCommand.DataTransferLength;
6705         if (CommandOpcode & 0x80) return -EINVAL;
6706         if (CommandOpcode == DAC960_V1_DCDB)
6707           {
6708             if (copy_from_user(&DCDB, UserCommand.DCDB,
6709                                sizeof(DAC960_V1_DCDB_T))) {
6710                 ErrorCode = -EFAULT;
6711                 goto Failure1a;
6712             }
6713             if (DCDB.Channel >= DAC960_V1_MaxChannels) return -EINVAL;
6714             if (!((DataTransferLength == 0 &&
6715                    DCDB.Direction
6716                    == DAC960_V1_DCDB_NoDataTransfer) ||
6717                   (DataTransferLength > 0 &&
6718                    DCDB.Direction
6719                    == DAC960_V1_DCDB_DataTransferDeviceToSystem) ||
6720                   (DataTransferLength < 0 &&
6721                    DCDB.Direction
6722                    == DAC960_V1_DCDB_DataTransferSystemToDevice)))
6723               return -EINVAL;
6724             if (((DCDB.TransferLengthHigh4 << 16) | DCDB.TransferLength)
6725                 != abs(DataTransferLength))
6726               return -EINVAL;
6727             DCDB_IOBUF = pci_alloc_consistent(Controller->PCIDevice,
6728                         sizeof(DAC960_V1_DCDB_T), &DCDB_IOBUFDMA);
6729             if (DCDB_IOBUF == NULL)
6730                         return -ENOMEM;
6731           }
6732         if (DataTransferLength > 0)
6733           {
6734             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6735                                 DataTransferLength, &DataTransferBufferDMA);
6736             if (DataTransferBuffer == NULL) {
6737                 ErrorCode = -ENOMEM;
6738                 goto Failure1;
6739             }
6740             memset(DataTransferBuffer, 0, DataTransferLength);
6741           }
6742         else if (DataTransferLength < 0)
6743           {
6744             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6745                                 -DataTransferLength, &DataTransferBufferDMA);
6746             if (DataTransferBuffer == NULL) {
6747                 ErrorCode = -ENOMEM;
6748                 goto Failure1;
6749             }
6750             if (copy_from_user(DataTransferBuffer,
6751                                UserCommand.DataTransferBuffer,
6752                                -DataTransferLength)) {
6753                 ErrorCode = -EFAULT;
6754                 goto Failure1;
6755             }
6756           }
6757         if (CommandOpcode == DAC960_V1_DCDB)
6758           {
6759             spin_lock_irqsave(&Controller->queue_lock, flags);
6760             while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6761               DAC960_WaitForCommand(Controller);
6762             while (Controller->V1.DirectCommandActive[DCDB.Channel]
6763                                                      [DCDB.TargetID])
6764               {
6765                 spin_unlock_irq(&Controller->queue_lock);
6766                 __wait_event(Controller->CommandWaitQueue,
6767                              !Controller->V1.DirectCommandActive
6768                                              [DCDB.Channel][DCDB.TargetID]);
6769                 spin_lock_irq(&Controller->queue_lock);
6770               }
6771             Controller->V1.DirectCommandActive[DCDB.Channel]
6772                                               [DCDB.TargetID] = true;
6773             spin_unlock_irqrestore(&Controller->queue_lock, flags);
6774             DAC960_V1_ClearCommand(Command);
6775             Command->CommandType = DAC960_ImmediateCommand;
6776             memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
6777                    sizeof(DAC960_V1_CommandMailbox_T));
6778             Command->V1.CommandMailbox.Type3.BusAddress = DCDB_IOBUFDMA;
6779             DCDB.BusAddress = DataTransferBufferDMA;
6780             memcpy(DCDB_IOBUF, &DCDB, sizeof(DAC960_V1_DCDB_T));
6781           }
6782         else
6783           {
6784             spin_lock_irqsave(&Controller->queue_lock, flags);
6785             while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6786               DAC960_WaitForCommand(Controller);
6787             spin_unlock_irqrestore(&Controller->queue_lock, flags);
6788             DAC960_V1_ClearCommand(Command);
6789             Command->CommandType = DAC960_ImmediateCommand;
6790             memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
6791                    sizeof(DAC960_V1_CommandMailbox_T));
6792             if (DataTransferBuffer != NULL)
6793               Command->V1.CommandMailbox.Type3.BusAddress =
6794                 DataTransferBufferDMA;
6795           }
6796         DAC960_ExecuteCommand(Command);
6797         CommandStatus = Command->V1.CommandStatus;
6798         spin_lock_irqsave(&Controller->queue_lock, flags);
6799         DAC960_DeallocateCommand(Command);
6800         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6801         if (DataTransferLength > 0)
6802           {
6803             if (copy_to_user(UserCommand.DataTransferBuffer,
6804                              DataTransferBuffer, DataTransferLength)) {
6805                 ErrorCode = -EFAULT;
6806                 goto Failure1;
6807             }
6808           }
6809         if (CommandOpcode == DAC960_V1_DCDB)
6810           {
6811             /*
6812               I don't believe Target or Channel in the DCDB_IOBUF
6813               should be any different from the contents of DCDB.
6814              */
6815             Controller->V1.DirectCommandActive[DCDB.Channel]
6816                                               [DCDB.TargetID] = false;
6817             if (copy_to_user(UserCommand.DCDB, DCDB_IOBUF,
6818                              sizeof(DAC960_V1_DCDB_T))) {
6819                 ErrorCode = -EFAULT;
6820                 goto Failure1;
6821             }
6822           }
6823         ErrorCode = CommandStatus;
6824       Failure1:
6825         if (DataTransferBuffer != NULL)
6826           pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
6827                         DataTransferBuffer, DataTransferBufferDMA);
6828         if (DCDB_IOBUF != NULL)
6829           pci_free_consistent(Controller->PCIDevice, sizeof(DAC960_V1_DCDB_T),
6830                         DCDB_IOBUF, DCDB_IOBUFDMA);
6831       Failure1a:
6832         return ErrorCode;
6833       }
6834     case DAC960_IOCTL_V2_EXECUTE_COMMAND:
6835       {
6836         DAC960_V2_UserCommand_T __user *UserSpaceUserCommand =
6837           (DAC960_V2_UserCommand_T __user *) Argument;
6838         DAC960_V2_UserCommand_T UserCommand;
6839         DAC960_Controller_T *Controller;
6840         DAC960_Command_T *Command = NULL;
6841         DAC960_V2_CommandMailbox_T *CommandMailbox;
6842         DAC960_V2_CommandStatus_T CommandStatus;
6843         unsigned long flags;
6844         int ControllerNumber, DataTransferLength;
6845         int DataTransferResidue, RequestSenseLength;
6846         unsigned char *DataTransferBuffer = NULL;
6847         dma_addr_t DataTransferBufferDMA;
6848         unsigned char *RequestSenseBuffer = NULL;
6849         dma_addr_t RequestSenseBufferDMA;
6850         if (UserSpaceUserCommand == NULL) return -EINVAL;
6851         if (copy_from_user(&UserCommand, UserSpaceUserCommand,
6852                            sizeof(DAC960_V2_UserCommand_T))) {
6853                 ErrorCode = -EFAULT;
6854                 goto Failure2a;
6855         }
6856         ControllerNumber = UserCommand.ControllerNumber;
6857         if (ControllerNumber < 0 ||
6858             ControllerNumber > DAC960_ControllerCount - 1)
6859           return -ENXIO;
6860         Controller = DAC960_Controllers[ControllerNumber];
6861         if (Controller == NULL) return -ENXIO;
6862         if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL;
6863         DataTransferLength = UserCommand.DataTransferLength;
6864         if (DataTransferLength > 0)
6865           {
6866             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6867                                 DataTransferLength, &DataTransferBufferDMA);
6868             if (DataTransferBuffer == NULL) return -ENOMEM;
6869             memset(DataTransferBuffer, 0, DataTransferLength);
6870           }
6871         else if (DataTransferLength < 0)
6872           {
6873             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6874                                 -DataTransferLength, &DataTransferBufferDMA);
6875             if (DataTransferBuffer == NULL) return -ENOMEM;
6876             if (copy_from_user(DataTransferBuffer,
6877                                UserCommand.DataTransferBuffer,
6878                                -DataTransferLength)) {
6879                 ErrorCode = -EFAULT;
6880                 goto Failure2;
6881             }
6882           }
6883         RequestSenseLength = UserCommand.RequestSenseLength;
6884         if (RequestSenseLength > 0)
6885           {
6886             RequestSenseBuffer = pci_alloc_consistent(Controller->PCIDevice,
6887                         RequestSenseLength, &RequestSenseBufferDMA);
6888             if (RequestSenseBuffer == NULL)
6889               {
6890                 ErrorCode = -ENOMEM;
6891                 goto Failure2;
6892               }
6893             memset(RequestSenseBuffer, 0, RequestSenseLength);
6894           }
6895         spin_lock_irqsave(&Controller->queue_lock, flags);
6896         while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6897           DAC960_WaitForCommand(Controller);
6898         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6899         DAC960_V2_ClearCommand(Command);
6900         Command->CommandType = DAC960_ImmediateCommand;
6901         CommandMailbox = &Command->V2.CommandMailbox;
6902         memcpy(CommandMailbox, &UserCommand.CommandMailbox,
6903                sizeof(DAC960_V2_CommandMailbox_T));
6904         CommandMailbox->Common.CommandControlBits
6905                               .AdditionalScatterGatherListMemory = false;
6906         CommandMailbox->Common.CommandControlBits
6907                               .NoAutoRequestSense = true;
6908         CommandMailbox->Common.DataTransferSize = 0;
6909         CommandMailbox->Common.DataTransferPageNumber = 0;
6910         memset(&CommandMailbox->Common.DataTransferMemoryAddress, 0,
6911                sizeof(DAC960_V2_DataTransferMemoryAddress_T));
6912         if (DataTransferLength != 0)
6913           {
6914             if (DataTransferLength > 0)
6915               {
6916                 CommandMailbox->Common.CommandControlBits
6917                                       .DataTransferControllerToHost = true;
6918                 CommandMailbox->Common.DataTransferSize = DataTransferLength;
6919               }
6920             else
6921               {
6922                 CommandMailbox->Common.CommandControlBits
6923                                       .DataTransferControllerToHost = false;
6924                 CommandMailbox->Common.DataTransferSize = -DataTransferLength;
6925               }
6926             CommandMailbox->Common.DataTransferMemoryAddress
6927                                   .ScatterGatherSegments[0]
6928                                   .SegmentDataPointer = DataTransferBufferDMA;
6929             CommandMailbox->Common.DataTransferMemoryAddress
6930                                   .ScatterGatherSegments[0]
6931                                   .SegmentByteCount =
6932               CommandMailbox->Common.DataTransferSize;
6933           }
6934         if (RequestSenseLength > 0)
6935           {
6936             CommandMailbox->Common.CommandControlBits
6937                                   .NoAutoRequestSense = false;
6938             CommandMailbox->Common.RequestSenseSize = RequestSenseLength;
6939             CommandMailbox->Common.RequestSenseBusAddress =
6940                                                         RequestSenseBufferDMA;
6941           }
6942         DAC960_ExecuteCommand(Command);
6943         CommandStatus = Command->V2.CommandStatus;
6944         RequestSenseLength = Command->V2.RequestSenseLength;
6945         DataTransferResidue = Command->V2.DataTransferResidue;
6946         spin_lock_irqsave(&Controller->queue_lock, flags);
6947         DAC960_DeallocateCommand(Command);
6948         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6949         if (RequestSenseLength > UserCommand.RequestSenseLength)
6950           RequestSenseLength = UserCommand.RequestSenseLength;
6951         if (copy_to_user(&UserSpaceUserCommand->DataTransferLength,
6952                                  &DataTransferResidue,
6953                                  sizeof(DataTransferResidue))) {
6954                 ErrorCode = -EFAULT;
6955                 goto Failure2;
6956         }
6957         if (copy_to_user(&UserSpaceUserCommand->RequestSenseLength,
6958                          &RequestSenseLength, sizeof(RequestSenseLength))) {
6959                 ErrorCode = -EFAULT;
6960                 goto Failure2;
6961         }
6962         if (DataTransferLength > 0)
6963           {
6964             if (copy_to_user(UserCommand.DataTransferBuffer,
6965                              DataTransferBuffer, DataTransferLength)) {
6966                 ErrorCode = -EFAULT;
6967                 goto Failure2;
6968             }
6969           }
6970         if (RequestSenseLength > 0)
6971           {
6972             if (copy_to_user(UserCommand.RequestSenseBuffer,
6973                              RequestSenseBuffer, RequestSenseLength)) {
6974                 ErrorCode = -EFAULT;
6975                 goto Failure2;
6976             }
6977           }
6978         ErrorCode = CommandStatus;
6979       Failure2:
6980           pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
6981                 DataTransferBuffer, DataTransferBufferDMA);
6982         if (RequestSenseBuffer != NULL)
6983           pci_free_consistent(Controller->PCIDevice, RequestSenseLength,
6984                 RequestSenseBuffer, RequestSenseBufferDMA);
6985       Failure2a:
6986         return ErrorCode;
6987       }
6988     case DAC960_IOCTL_V2_GET_HEALTH_STATUS:
6989       {
6990         DAC960_V2_GetHealthStatus_T __user *UserSpaceGetHealthStatus =
6991           (DAC960_V2_GetHealthStatus_T __user *) Argument;
6992         DAC960_V2_GetHealthStatus_T GetHealthStatus;
6993         DAC960_V2_HealthStatusBuffer_T HealthStatusBuffer;
6994         DAC960_Controller_T *Controller;
6995         int ControllerNumber;
6996         if (UserSpaceGetHealthStatus == NULL) return -EINVAL;
6997         if (copy_from_user(&GetHealthStatus, UserSpaceGetHealthStatus,
6998                            sizeof(DAC960_V2_GetHealthStatus_T)))
6999                 return -EFAULT;
7000         ControllerNumber = GetHealthStatus.ControllerNumber;
7001         if (ControllerNumber < 0 ||
7002             ControllerNumber > DAC960_ControllerCount - 1)
7003           return -ENXIO;
7004         Controller = DAC960_Controllers[ControllerNumber];
7005         if (Controller == NULL) return -ENXIO;
7006         if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL;
7007         if (copy_from_user(&HealthStatusBuffer,
7008                            GetHealthStatus.HealthStatusBuffer,
7009                            sizeof(DAC960_V2_HealthStatusBuffer_T)))
7010                 return -EFAULT;
7011         while (Controller->V2.HealthStatusBuffer->StatusChangeCounter
7012                == HealthStatusBuffer.StatusChangeCounter &&
7013                Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
7014                == HealthStatusBuffer.NextEventSequenceNumber)
7015           {
7016             interruptible_sleep_on_timeout(&Controller->HealthStatusWaitQueue,
7017                                            DAC960_MonitoringTimerInterval);
7018             if (signal_pending(current)) return -EINTR;
7019           }
7020         if (copy_to_user(GetHealthStatus.HealthStatusBuffer,
7021                          Controller->V2.HealthStatusBuffer,
7022                          sizeof(DAC960_V2_HealthStatusBuffer_T)))
7023                 return -EFAULT;
7024         return 0;
7025       }
7026     }
7027   return -EINVAL;
7028 }
7029
7030 static const struct file_operations DAC960_gam_fops = {
7031         .owner          = THIS_MODULE,
7032         .ioctl          = DAC960_gam_ioctl
7033 };
7034
7035 static struct miscdevice DAC960_gam_dev = {
7036         DAC960_GAM_MINOR,
7037         "dac960_gam",
7038         &DAC960_gam_fops
7039 };
7040
7041 static int DAC960_gam_init(void)
7042 {
7043         int ret;
7044
7045         ret = misc_register(&DAC960_gam_dev);
7046         if (ret)
7047                 printk(KERN_ERR "DAC960_gam: can't misc_register on minor %d\n", DAC960_GAM_MINOR);
7048         return ret;
7049 }
7050
7051 static void DAC960_gam_cleanup(void)
7052 {
7053         misc_deregister(&DAC960_gam_dev);
7054 }
7055
7056 #endif /* DAC960_GAM_MINOR */
7057
7058 static struct DAC960_privdata DAC960_GEM_privdata = {
7059         .HardwareType =         DAC960_GEM_Controller,
7060         .FirmwareType   =       DAC960_V2_Controller,
7061         .InterruptHandler =     DAC960_GEM_InterruptHandler,
7062         .MemoryWindowSize =     DAC960_GEM_RegisterWindowSize,
7063 };
7064
7065
7066 static struct DAC960_privdata DAC960_BA_privdata = {
7067         .HardwareType =         DAC960_BA_Controller,
7068         .FirmwareType   =       DAC960_V2_Controller,
7069         .InterruptHandler =     DAC960_BA_InterruptHandler,
7070         .MemoryWindowSize =     DAC960_BA_RegisterWindowSize,
7071 };
7072
7073 static struct DAC960_privdata DAC960_LP_privdata = {
7074         .HardwareType =         DAC960_LP_Controller,
7075         .FirmwareType   =       DAC960_LP_Controller,
7076         .InterruptHandler =     DAC960_LP_InterruptHandler,
7077         .MemoryWindowSize =     DAC960_LP_RegisterWindowSize,
7078 };
7079
7080 static struct DAC960_privdata DAC960_LA_privdata = {
7081         .HardwareType =         DAC960_LA_Controller,
7082         .FirmwareType   =       DAC960_V1_Controller,
7083         .InterruptHandler =     DAC960_LA_InterruptHandler,
7084         .MemoryWindowSize =     DAC960_LA_RegisterWindowSize,
7085 };
7086
7087 static struct DAC960_privdata DAC960_PG_privdata = {
7088         .HardwareType =         DAC960_PG_Controller,
7089         .FirmwareType   =       DAC960_V1_Controller,
7090         .InterruptHandler =     DAC960_PG_InterruptHandler,
7091         .MemoryWindowSize =     DAC960_PG_RegisterWindowSize,
7092 };
7093
7094 static struct DAC960_privdata DAC960_PD_privdata = {
7095         .HardwareType =         DAC960_PD_Controller,
7096         .FirmwareType   =       DAC960_V1_Controller,
7097         .InterruptHandler =     DAC960_PD_InterruptHandler,
7098         .MemoryWindowSize =     DAC960_PD_RegisterWindowSize,
7099 };
7100
7101 static struct DAC960_privdata DAC960_P_privdata = {
7102         .HardwareType =         DAC960_P_Controller,
7103         .FirmwareType   =       DAC960_V1_Controller,
7104         .InterruptHandler =     DAC960_P_InterruptHandler,
7105         .MemoryWindowSize =     DAC960_PD_RegisterWindowSize,
7106 };
7107
7108 static struct pci_device_id DAC960_id_table[] = {
7109         {
7110                 .vendor         = PCI_VENDOR_ID_MYLEX,
7111                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_GEM,
7112                 .subvendor      = PCI_VENDOR_ID_MYLEX,
7113                 .subdevice      = PCI_ANY_ID,
7114                 .driver_data    = (unsigned long) &DAC960_GEM_privdata,
7115         },
7116         {
7117                 .vendor         = PCI_VENDOR_ID_MYLEX,
7118                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_BA,
7119                 .subvendor      = PCI_ANY_ID,
7120                 .subdevice      = PCI_ANY_ID,
7121                 .driver_data    = (unsigned long) &DAC960_BA_privdata,
7122         },
7123         {
7124                 .vendor         = PCI_VENDOR_ID_MYLEX,
7125                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_LP,
7126                 .subvendor      = PCI_ANY_ID,
7127                 .subdevice      = PCI_ANY_ID,
7128                 .driver_data    = (unsigned long) &DAC960_LP_privdata,
7129         },
7130         {
7131                 .vendor         = PCI_VENDOR_ID_DEC,
7132                 .device         = PCI_DEVICE_ID_DEC_21285,
7133                 .subvendor      = PCI_VENDOR_ID_MYLEX,
7134                 .subdevice      = PCI_DEVICE_ID_MYLEX_DAC960_LA,
7135                 .driver_data    = (unsigned long) &DAC960_LA_privdata,
7136         },
7137         {
7138                 .vendor         = PCI_VENDOR_ID_MYLEX,
7139                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_PG,
7140                 .subvendor      = PCI_ANY_ID,
7141                 .subdevice      = PCI_ANY_ID,
7142                 .driver_data    = (unsigned long) &DAC960_PG_privdata,
7143         },
7144         {
7145                 .vendor         = PCI_VENDOR_ID_MYLEX,
7146                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_PD,
7147                 .subvendor      = PCI_ANY_ID,
7148                 .subdevice      = PCI_ANY_ID,
7149                 .driver_data    = (unsigned long) &DAC960_PD_privdata,
7150         },
7151         {
7152                 .vendor         = PCI_VENDOR_ID_MYLEX,
7153                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_P,
7154                 .subvendor      = PCI_ANY_ID,
7155                 .subdevice      = PCI_ANY_ID,
7156                 .driver_data    = (unsigned long) &DAC960_P_privdata,
7157         },
7158         {0, },
7159 };
7160
7161 MODULE_DEVICE_TABLE(pci, DAC960_id_table);
7162
7163 static struct pci_driver DAC960_pci_driver = {
7164         .name           = "DAC960",
7165         .id_table       = DAC960_id_table,
7166         .probe          = DAC960_Probe,
7167         .remove         = DAC960_Remove,
7168 };
7169
7170 static int DAC960_init_module(void)
7171 {
7172         int ret;
7173
7174         ret =  pci_register_driver(&DAC960_pci_driver);
7175 #ifdef DAC960_GAM_MINOR
7176         if (!ret)
7177                 DAC960_gam_init();
7178 #endif
7179         return ret;
7180 }
7181
7182 static void DAC960_cleanup_module(void)
7183 {
7184         int i;
7185
7186 #ifdef DAC960_GAM_MINOR
7187         DAC960_gam_cleanup();
7188 #endif
7189
7190         for (i = 0; i < DAC960_ControllerCount; i++) {
7191                 DAC960_Controller_T *Controller = DAC960_Controllers[i];
7192                 if (Controller == NULL)
7193                         continue;
7194                 DAC960_FinalizeController(Controller);
7195         }
7196         if (DAC960_ProcDirectoryEntry != NULL) {
7197                 remove_proc_entry("rd/status", NULL);
7198                 remove_proc_entry("rd", NULL);
7199         }
7200         DAC960_ControllerCount = 0;
7201         pci_unregister_driver(&DAC960_pci_driver);
7202 }
7203
7204 module_init(DAC960_init_module);
7205 module_exit(DAC960_cleanup_module);
7206
7207 MODULE_LICENSE("GPL");