drivers/scsi/BusLogic.c

   1
   2 /*
   3
   4   Linux Driver for BusLogic MultiMaster and FlashPoint SCSI Host Adapters
   5
   6   Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>
   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   The author respectfully requests that any modifications to this software be
  18   sent directly to him for evaluation and testing.
  19
  20   Special thanks to Wayne Yen, Jin-Lon Hon, and Alex Win of BusLogic, whose
  21   advice has been invaluable, to David Gentzel, for writing the original Linux
  22   BusLogic driver, and to Paul Gortmaker, for being such a dedicated test site.
  23
  24   Finally, special thanks to Mylex/BusLogic for making the FlashPoint SCCB
  25   Manager available as freely redistributable source code.
  26
  27 */
  28
  29 #define BusLogic_DriverVersion          "2.1.16"
  30 #define BusLogic_DriverDate             "18 July 2002"
  31
  32 #include <linux/module.h>
  33 #include <linux/init.h>
  34 #include <linux/interrupt.h>
  35 #include <linux/types.h>
  36 #include <linux/blkdev.h>
  37 #include <linux/delay.h>
  38 #include <linux/ioport.h>
  39 #include <linux/mm.h>
  40 #include <linux/stat.h>
  41 #include <linux/pci.h>
  42 #include <linux/spinlock.h>
  43 #include <linux/jiffies.h>
  44 #include <linux/dma-mapping.h>
  45 #include <linux/slab.h>
  46 #include <scsi/scsicam.h>
  47
  48 #include <asm/dma.h>
  49 #include <asm/io.h>
  50 #include <asm/system.h>
  51
  52 #include <scsi/scsi.h>
  53 #include <scsi/scsi_cmnd.h>
  54 #include <scsi/scsi_device.h>
  55 #include <scsi/scsi_host.h>
  56 #include <scsi/scsi_tcq.h>
  57 #include "BusLogic.h"
  58 #include "FlashPoint.c"
  59
  60 #ifndef FAILURE
  61 #define FAILURE (-1)
  62 #endif
  63
  64 static struct scsi_host_template Bus_Logic_template;
  65
  66 /*
  67   BusLogic_DriverOptionsCount is a count of the number of BusLogic Driver
  68   Options specifications provided via the Linux Kernel Command Line or via
  69   the Loadable Kernel Module Installation Facility.
  70 */
  71
  72 static int BusLogic_DriverOptionsCount;
  73
  74
  75 /*
  76   BusLogic_DriverOptions is an array of Driver Options structures representing
  77   BusLogic Driver Options specifications provided via the Linux Kernel Command
  78   Line or via the Loadable Kernel Module Installation Facility.
  79 */
  80
  81 static struct BusLogic_DriverOptions BusLogic_DriverOptions[BusLogic_MaxHostAdapters];
  82
  83
  84 /*
  85   BusLogic can be assigned a string by insmod.
  86 */
  87
  88 MODULE_LICENSE("GPL");
  89 #ifdef MODULE
  90 static char *BusLogic;
  91 module_param(BusLogic, charp, 0);
  92 #endif
  93
  94
  95 /*
  96   BusLogic_ProbeOptions is a set of Probe Options to be applied across
  97   all BusLogic Host Adapters.
  98 */
  99
 100 static struct BusLogic_ProbeOptions BusLogic_ProbeOptions;
 101
 102
 103 /*
 104   BusLogic_GlobalOptions is a set of Global Options to be applied across
 105   all BusLogic Host Adapters.
 106 */
 107
 108 static struct BusLogic_GlobalOptions BusLogic_GlobalOptions;
 109
 110 static LIST_HEAD(BusLogic_host_list);
 111
 112 /*
 113   BusLogic_ProbeInfoCount is the number of entries in BusLogic_ProbeInfoList.
 114 */
 115
 116 static int BusLogic_ProbeInfoCount;
 117
 118
 119 /*
 120   BusLogic_ProbeInfoList is the list of I/O Addresses and Bus Probe Information
 121   to be checked for potential BusLogic Host Adapters.  It is initialized by
 122   interrogating the PCI Configuration Space on PCI machines as well as from the
 123   list of standard BusLogic I/O Addresses.
 124 */
 125
 126 static struct BusLogic_ProbeInfo *BusLogic_ProbeInfoList;
 127
 128
 129 /*
 130   BusLogic_CommandFailureReason holds a string identifying the reason why a
 131   call to BusLogic_Command failed.  It is only non-NULL when BusLogic_Command
 132   returns a failure code.
 133 */
 134
 135 static char *BusLogic_CommandFailureReason;
 136
 137 /*
 138   BusLogic_AnnounceDriver announces the Driver Version and Date, Author's
 139   Name, Copyright Notice, and Electronic Mail Address.
 140 */
 141
 142 static void BusLogic_AnnounceDriver(struct BusLogic_HostAdapter *HostAdapter)
 143 {
 144         BusLogic_Announce("***** BusLogic SCSI Driver Version " BusLogic_DriverVersion " of " BusLogic_DriverDate " *****\n", HostAdapter);
 145         BusLogic_Announce("Copyright 1995-1998 by Leonard N. Zubkoff " "<lnz@dandelion.com>\n", HostAdapter);
 146 }
 147
 148
 149 /*
 150   BusLogic_DriverInfo returns the Host Adapter Name to identify this SCSI
 151   Driver and Host Adapter.
 152 */
 153
 154 static const char *BusLogic_DriverInfo(struct Scsi_Host *Host)
 155 {
 156         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Host->hostdata;
 157         return HostAdapter->FullModelName;
 158 }
 159
 160 /*
 161   BusLogic_InitializeCCBs initializes a group of Command Control Blocks (CCBs)
 162   for Host Adapter from the BlockSize bytes located at BlockPointer.  The newly
 163   created CCBs are added to Host Adapter's free list.
 164 */
 165
 166 static void BusLogic_InitializeCCBs(struct BusLogic_HostAdapter *HostAdapter, void *BlockPointer, int BlockSize, dma_addr_t BlockPointerHandle)
 167 {
 168         struct BusLogic_CCB *CCB = (struct BusLogic_CCB *) BlockPointer;
 169         unsigned int offset = 0;
 170         memset(BlockPointer, 0, BlockSize);
 171         CCB->AllocationGroupHead = BlockPointerHandle;
 172         CCB->AllocationGroupSize = BlockSize;
 173         while ((BlockSize -= sizeof(struct BusLogic_CCB)) >= 0) {
 174                 CCB->Status = BusLogic_CCB_Free;
 175                 CCB->HostAdapter = HostAdapter;
 176                 CCB->DMA_Handle = (u32) BlockPointerHandle + offset;
 177                 if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
 178                         CCB->CallbackFunction = BusLogic_QueueCompletedCCB;
 179                         CCB->BaseAddress = HostAdapter->FlashPointInfo.BaseAddress;
 180                 }
 181                 CCB->Next = HostAdapter->Free_CCBs;
 182                 CCB->NextAll = HostAdapter->All_CCBs;
 183                 HostAdapter->Free_CCBs = CCB;
 184                 HostAdapter->All_CCBs = CCB;
 185                 HostAdapter->AllocatedCCBs++;
 186                 CCB++;
 187                 offset += sizeof(struct BusLogic_CCB);
 188         }
 189 }
 190
 191
 192 /*
 193   BusLogic_CreateInitialCCBs allocates the initial CCBs for Host Adapter.
 194 */
 195
 196 static bool __init BusLogic_CreateInitialCCBs(struct BusLogic_HostAdapter *HostAdapter)
 197 {
 198         int BlockSize = BusLogic_CCB_AllocationGroupSize * sizeof(struct BusLogic_CCB);
 199         void *BlockPointer;
 200         dma_addr_t BlockPointerHandle;
 201         while (HostAdapter->AllocatedCCBs < HostAdapter->InitialCCBs) {
 202                 BlockPointer = pci_alloc_consistent(HostAdapter->PCI_Device, BlockSize, &BlockPointerHandle);
 203                 if (BlockPointer == NULL) {
 204                         BusLogic_Error("UNABLE TO ALLOCATE CCB GROUP - DETACHING\n", HostAdapter);
 205                         return false;
 206                 }
 207                 BusLogic_InitializeCCBs(HostAdapter, BlockPointer, BlockSize, BlockPointerHandle);
 208         }
 209         return true;
 210 }
 211
 212
 213 /*
 214   BusLogic_DestroyCCBs deallocates the CCBs for Host Adapter.
 215 */
 216
 217 static void BusLogic_DestroyCCBs(struct BusLogic_HostAdapter *HostAdapter)
 218 {
 219         struct BusLogic_CCB *NextCCB = HostAdapter->All_CCBs, *CCB, *Last_CCB = NULL;
 220         HostAdapter->All_CCBs = NULL;
 221         HostAdapter->Free_CCBs = NULL;
 222         while ((CCB = NextCCB) != NULL) {
 223                 NextCCB = CCB->NextAll;
 224                 if (CCB->AllocationGroupHead) {
 225                         if (Last_CCB)
 226                                 pci_free_consistent(HostAdapter->PCI_Device, Last_CCB->AllocationGroupSize, Last_CCB, Last_CCB->AllocationGroupHead);
 227                         Last_CCB = CCB;
 228                 }
 229         }
 230         if (Last_CCB)
 231                 pci_free_consistent(HostAdapter->PCI_Device, Last_CCB->AllocationGroupSize, Last_CCB, Last_CCB->AllocationGroupHead);
 232 }
 233
 234
 235 /*
 236   BusLogic_CreateAdditionalCCBs allocates Additional CCBs for Host Adapter.  If
 237   allocation fails and there are no remaining CCBs available, the Driver Queue
 238   Depth is decreased to a known safe value to avoid potential deadlocks when
 239   multiple host adapters share the same IRQ Channel.
 240 */
 241
 242 static void BusLogic_CreateAdditionalCCBs(struct BusLogic_HostAdapter *HostAdapter, int AdditionalCCBs, bool SuccessMessageP)
 243 {
 244         int BlockSize = BusLogic_CCB_AllocationGroupSize * sizeof(struct BusLogic_CCB);
 245         int PreviouslyAllocated = HostAdapter->AllocatedCCBs;
 246         void *BlockPointer;
 247         dma_addr_t BlockPointerHandle;
 248         if (AdditionalCCBs <= 0)
 249                 return;
 250         while (HostAdapter->AllocatedCCBs - PreviouslyAllocated < AdditionalCCBs) {
 251                 BlockPointer = pci_alloc_consistent(HostAdapter->PCI_Device, BlockSize, &BlockPointerHandle);
 252                 if (BlockPointer == NULL)
 253                         break;
 254                 BusLogic_InitializeCCBs(HostAdapter, BlockPointer, BlockSize, BlockPointerHandle);
 255         }
 256         if (HostAdapter->AllocatedCCBs > PreviouslyAllocated) {
 257                 if (SuccessMessageP)
 258                         BusLogic_Notice("Allocated %d additional CCBs (total now %d)\n", HostAdapter, HostAdapter->AllocatedCCBs - PreviouslyAllocated, HostAdapter->AllocatedCCBs);
 259                 return;
 260         }
 261         BusLogic_Notice("Failed to allocate additional CCBs\n", HostAdapter);
 262         if (HostAdapter->DriverQueueDepth > HostAdapter->AllocatedCCBs - HostAdapter->TargetDeviceCount) {
 263                 HostAdapter->DriverQueueDepth = HostAdapter->AllocatedCCBs - HostAdapter->TargetDeviceCount;
 264                 HostAdapter->SCSI_Host->can_queue = HostAdapter->DriverQueueDepth;
 265         }
 266 }
 267
 268 /*
 269   BusLogic_AllocateCCB allocates a CCB from Host Adapter's free list,
 270   allocating more memory from the Kernel if necessary.  The Host Adapter's
 271   Lock should already have been acquired by the caller.
 272 */
 273
 274 static struct BusLogic_CCB *BusLogic_AllocateCCB(struct BusLogic_HostAdapter
 275                                                  *HostAdapter)
 276 {
 277         static unsigned long SerialNumber = 0;
 278         struct BusLogic_CCB *CCB;
 279         CCB = HostAdapter->Free_CCBs;
 280         if (CCB != NULL) {
 281                 CCB->SerialNumber = ++SerialNumber;
 282                 HostAdapter->Free_CCBs = CCB->Next;
 283                 CCB->Next = NULL;
 284                 if (HostAdapter->Free_CCBs == NULL)
 285                         BusLogic_CreateAdditionalCCBs(HostAdapter, HostAdapter->IncrementalCCBs, true);
 286                 return CCB;
 287         }
 288         BusLogic_CreateAdditionalCCBs(HostAdapter, HostAdapter->IncrementalCCBs, true);
 289         CCB = HostAdapter->Free_CCBs;
 290         if (CCB == NULL)
 291                 return NULL;
 292         CCB->SerialNumber = ++SerialNumber;
 293         HostAdapter->Free_CCBs = CCB->Next;
 294         CCB->Next = NULL;
 295         return CCB;
 296 }
 297
 298
 299 /*
 300   BusLogic_DeallocateCCB deallocates a CCB, returning it to the Host Adapter's
 301   free list.  The Host Adapter's Lock should already have been acquired by the
 302   caller.
 303 */
 304
 305 static void BusLogic_DeallocateCCB(struct BusLogic_CCB *CCB)
 306 {
 307         struct BusLogic_HostAdapter *HostAdapter = CCB->HostAdapter;
 308
 309         scsi_dma_unmap(CCB->Command);
 310         pci_unmap_single(HostAdapter->PCI_Device, CCB->SenseDataPointer,
 311                          CCB->SenseDataLength, PCI_DMA_FROMDEVICE);
 312
 313         CCB->Command = NULL;
 314         CCB->Status = BusLogic_CCB_Free;
 315         CCB->Next = HostAdapter->Free_CCBs;
 316         HostAdapter->Free_CCBs = CCB;
 317 }
 318
 319
 320 /*
 321   BusLogic_Command sends the command OperationCode to HostAdapter, optionally
 322   providing ParameterLength bytes of ParameterData and receiving at most
 323   ReplyLength bytes of ReplyData; any excess reply data is received but
 324   discarded.
 325
 326   On success, this function returns the number of reply bytes read from
 327   the Host Adapter (including any discarded data); on failure, it returns
 328   -1 if the command was invalid, or -2 if a timeout occurred.
 329
 330   BusLogic_Command is called exclusively during host adapter detection and
 331   initialization, so performance and latency are not critical, and exclusive
 332   access to the Host Adapter hardware is assumed.  Once the host adapter and
 333   driver are initialized, the only Host Adapter command that is issued is the
 334   single byte Execute Mailbox Command operation code, which does not require
 335   waiting for the Host Adapter Ready bit to be set in the Status Register.
 336 */
 337
 338 static int BusLogic_Command(struct BusLogic_HostAdapter *HostAdapter, enum BusLogic_OperationCode OperationCode, void *ParameterData, int ParameterLength, void *ReplyData, int ReplyLength)
 339 {
 340         unsigned char *ParameterPointer = (unsigned char *) ParameterData;
 341         unsigned char *ReplyPointer = (unsigned char *) ReplyData;
 342         union BusLogic_StatusRegister StatusRegister;
 343         union BusLogic_InterruptRegister InterruptRegister;
 344         unsigned long ProcessorFlags = 0;
 345         int ReplyBytes = 0, Result;
 346         long TimeoutCounter;
 347         /*
 348            Clear out the Reply Data if provided.
 349          */
 350         if (ReplyLength > 0)
 351                 memset(ReplyData, 0, ReplyLength);
 352         /*
 353            If the IRQ Channel has not yet been acquired, then interrupts must be
 354            disabled while issuing host adapter commands since a Command Complete
 355            interrupt could occur if the IRQ Channel was previously enabled by another
 356            BusLogic Host Adapter or another driver sharing the same IRQ Channel.
 357          */
 358         if (!HostAdapter->IRQ_ChannelAcquired)
 359                 local_irq_save(ProcessorFlags);
 360         /*
 361            Wait for the Host Adapter Ready bit to be set and the Command/Parameter
 362            Register Busy bit to be reset in the Status Register.
 363          */
 364         TimeoutCounter = 10000;
 365         while (--TimeoutCounter >= 0) {
 366                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 367                 if (StatusRegister.sr.HostAdapterReady && !StatusRegister.sr.CommandParameterRegisterBusy)
 368                         break;
 369                 udelay(100);
 370         }
 371         if (TimeoutCounter < 0) {
 372                 BusLogic_CommandFailureReason = "Timeout waiting for Host Adapter Ready";
 373                 Result = -2;
 374                 goto Done;
 375         }
 376         /*
 377            Write the OperationCode to the Command/Parameter Register.
 378          */
 379         HostAdapter->HostAdapterCommandCompleted = false;
 380         BusLogic_WriteCommandParameterRegister(HostAdapter, OperationCode);
 381         /*
 382            Write any additional Parameter Bytes.
 383          */
 384         TimeoutCounter = 10000;
 385         while (ParameterLength > 0 && --TimeoutCounter >= 0) {
 386                 /*
 387                    Wait 100 microseconds to give the Host Adapter enough time to determine
 388                    whether the last value written to the Command/Parameter Register was
 389                    valid or not.  If the Command Complete bit is set in the Interrupt
 390                    Register, then the Command Invalid bit in the Status Register will be
 391                    reset if the Operation Code or Parameter was valid and the command
 392                    has completed, or set if the Operation Code or Parameter was invalid.
 393                    If the Data In Register Ready bit is set in the Status Register, then
 394                    the Operation Code was valid, and data is waiting to be read back
 395                    from the Host Adapter.  Otherwise, wait for the Command/Parameter
 396                    Register Busy bit in the Status Register to be reset.
 397                  */
 398                 udelay(100);
 399                 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
 400                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 401                 if (InterruptRegister.ir.CommandComplete)
 402                         break;
 403                 if (HostAdapter->HostAdapterCommandCompleted)
 404                         break;
 405                 if (StatusRegister.sr.DataInRegisterReady)
 406                         break;
 407                 if (StatusRegister.sr.CommandParameterRegisterBusy)
 408                         continue;
 409                 BusLogic_WriteCommandParameterRegister(HostAdapter, *ParameterPointer++);
 410                 ParameterLength--;
 411         }
 412         if (TimeoutCounter < 0) {
 413                 BusLogic_CommandFailureReason = "Timeout waiting for Parameter Acceptance";
 414                 Result = -2;
 415                 goto Done;
 416         }
 417         /*
 418            The Modify I/O Address command does not cause a Command Complete Interrupt.
 419          */
 420         if (OperationCode == BusLogic_ModifyIOAddress) {
 421                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 422                 if (StatusRegister.sr.CommandInvalid) {
 423                         BusLogic_CommandFailureReason = "Modify I/O Address Invalid";
 424                         Result = -1;
 425                         goto Done;
 426                 }
 427                 if (BusLogic_GlobalOptions.TraceConfiguration)
 428                         BusLogic_Notice("BusLogic_Command(%02X) Status = %02X: " "(Modify I/O Address)\n", HostAdapter, OperationCode, StatusRegister.All);
 429                 Result = 0;
 430                 goto Done;
 431         }
 432         /*
 433            Select an appropriate timeout value for awaiting command completion.
 434          */
 435         switch (OperationCode) {
 436         case BusLogic_InquireInstalledDevicesID0to7:
 437         case BusLogic_InquireInstalledDevicesID8to15:
 438         case BusLogic_InquireTargetDevices:
 439                 /* Approximately 60 seconds. */
 440                 TimeoutCounter = 60 * 10000;
 441                 break;
 442         default:
 443                 /* Approximately 1 second. */
 444                 TimeoutCounter = 10000;
 445                 break;
 446         }
 447         /*
 448            Receive any Reply Bytes, waiting for either the Command Complete bit to
 449            be set in the Interrupt Register, or for the Interrupt Handler to set the
 450            Host Adapter Command Completed bit in the Host Adapter structure.
 451          */
 452         while (--TimeoutCounter >= 0) {
 453                 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
 454                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 455                 if (InterruptRegister.ir.CommandComplete)
 456                         break;
 457                 if (HostAdapter->HostAdapterCommandCompleted)
 458                         break;
 459                 if (StatusRegister.sr.DataInRegisterReady) {
 460                         if (++ReplyBytes <= ReplyLength)
 461                                 *ReplyPointer++ = BusLogic_ReadDataInRegister(HostAdapter);
 462                         else
 463                                 BusLogic_ReadDataInRegister(HostAdapter);
 464                 }
 465                 if (OperationCode == BusLogic_FetchHostAdapterLocalRAM && StatusRegister.sr.HostAdapterReady)
 466                         break;
 467                 udelay(100);
 468         }
 469         if (TimeoutCounter < 0) {
 470                 BusLogic_CommandFailureReason = "Timeout waiting for Command Complete";
 471                 Result = -2;
 472                 goto Done;
 473         }
 474         /*
 475            Clear any pending Command Complete Interrupt.
 476          */
 477         BusLogic_InterruptReset(HostAdapter);
 478         /*
 479            Provide tracing information if requested.
 480          */
 481         if (BusLogic_GlobalOptions.TraceConfiguration) {
 482                 int i;
 483                 BusLogic_Notice("BusLogic_Command(%02X) Status = %02X: %2d ==> %2d:", HostAdapter, OperationCode, StatusRegister.All, ReplyLength, ReplyBytes);
 484                 if (ReplyLength > ReplyBytes)
 485                         ReplyLength = ReplyBytes;
 486                 for (i = 0; i < ReplyLength; i++)
 487                         BusLogic_Notice(" %02X", HostAdapter, ((unsigned char *) ReplyData)[i]);
 488                 BusLogic_Notice("\n", HostAdapter);
 489         }
 490         /*
 491            Process Command Invalid conditions.
 492          */
 493         if (StatusRegister.sr.CommandInvalid) {
 494                 /*
 495                    Some early BusLogic Host Adapters may not recover properly from
 496                    a Command Invalid condition, so if this appears to be the case,
 497                    a Soft Reset is issued to the Host Adapter.  Potentially invalid
 498                    commands are never attempted after Mailbox Initialization is
 499                    performed, so there should be no Host Adapter state lost by a
 500                    Soft Reset in response to a Command Invalid condition.
 501                  */
 502                 udelay(1000);
 503                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 504                 if (StatusRegister.sr.CommandInvalid ||
 505                     StatusRegister.sr.Reserved ||
 506                     StatusRegister.sr.DataInRegisterReady ||
 507                     StatusRegister.sr.CommandParameterRegisterBusy || !StatusRegister.sr.HostAdapterReady || !StatusRegister.sr.InitializationRequired || StatusRegister.sr.DiagnosticActive || StatusRegister.sr.DiagnosticFailure) {
 508                         BusLogic_SoftReset(HostAdapter);
 509                         udelay(1000);
 510                 }
 511                 BusLogic_CommandFailureReason = "Command Invalid";
 512                 Result = -1;
 513                 goto Done;
 514         }
 515         /*
 516            Handle Excess Parameters Supplied conditions.
 517          */
 518         if (ParameterLength > 0) {
 519                 BusLogic_CommandFailureReason = "Excess Parameters Supplied";
 520                 Result = -1;
 521                 goto Done;
 522         }
 523         /*
 524            Indicate the command completed successfully.
 525          */
 526         BusLogic_CommandFailureReason = NULL;
 527         Result = ReplyBytes;
 528         /*
 529            Restore the interrupt status if necessary and return.
 530          */
 531       Done:
 532         if (!HostAdapter->IRQ_ChannelAcquired)
 533                 local_irq_restore(ProcessorFlags);
 534         return Result;
 535 }
 536
 537
 538 /*
 539   BusLogic_AppendProbeAddressISA appends a single ISA I/O Address to the list
 540   of I/O Address and Bus Probe Information to be checked for potential BusLogic
 541   Host Adapters.
 542 */
 543
 544 static void __init BusLogic_AppendProbeAddressISA(unsigned long IO_Address)
 545 {
 546         struct BusLogic_ProbeInfo *ProbeInfo;
 547         if (BusLogic_ProbeInfoCount >= BusLogic_MaxHostAdapters)
 548                 return;
 549         ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
 550         ProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 551         ProbeInfo->HostAdapterBusType = BusLogic_ISA_Bus;
 552         ProbeInfo->IO_Address = IO_Address;
 553         ProbeInfo->PCI_Device = NULL;
 554 }
 555
 556
 557 /*
 558   BusLogic_InitializeProbeInfoListISA initializes the list of I/O Address and
 559   Bus Probe Information to be checked for potential BusLogic SCSI Host Adapters
 560   only from the list of standard BusLogic MultiMaster ISA I/O Addresses.
 561 */
 562
 563 static void __init BusLogic_InitializeProbeInfoListISA(struct BusLogic_HostAdapter
 564                                                        *PrototypeHostAdapter)
 565 {
 566         /*
 567            If BusLogic Driver Options specifications requested that ISA Bus Probes
 568            be inhibited, do not proceed further.
 569          */
 570         if (BusLogic_ProbeOptions.NoProbeISA)
 571                 return;
 572         /*
 573            Append the list of standard BusLogic MultiMaster ISA I/O Addresses.
 574          */
 575         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe330)
 576                 BusLogic_AppendProbeAddressISA(0x330);
 577         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe334)
 578                 BusLogic_AppendProbeAddressISA(0x334);
 579         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe230)
 580                 BusLogic_AppendProbeAddressISA(0x230);
 581         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe234)
 582                 BusLogic_AppendProbeAddressISA(0x234);
 583         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe130)
 584                 BusLogic_AppendProbeAddressISA(0x130);
 585         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe134)
 586                 BusLogic_AppendProbeAddressISA(0x134);
 587 }
 588
 589
 590 #ifdef CONFIG_PCI
 591
 592
 593 /*
 594   BusLogic_SortProbeInfo sorts a section of BusLogic_ProbeInfoList in order
 595   of increasing PCI Bus and Device Number.
 596 */
 597
 598 static void __init BusLogic_SortProbeInfo(struct BusLogic_ProbeInfo *ProbeInfoList, int ProbeInfoCount)
 599 {
 600         int LastInterchange = ProbeInfoCount - 1, Bound, j;
 601         while (LastInterchange > 0) {
 602                 Bound = LastInterchange;
 603                 LastInterchange = 0;
 604                 for (j = 0; j < Bound; j++) {
 605                         struct BusLogic_ProbeInfo *ProbeInfo1 = &ProbeInfoList[j];
 606                         struct BusLogic_ProbeInfo *ProbeInfo2 = &ProbeInfoList[j + 1];
 607                         if (ProbeInfo1->Bus > ProbeInfo2->Bus || (ProbeInfo1->Bus == ProbeInfo2->Bus && (ProbeInfo1->Device > ProbeInfo2->Device))) {
 608                                 struct BusLogic_ProbeInfo TempProbeInfo;
 609                                 memcpy(&TempProbeInfo, ProbeInfo1, sizeof(struct BusLogic_ProbeInfo));
 610                                 memcpy(ProbeInfo1, ProbeInfo2, sizeof(struct BusLogic_ProbeInfo));
 611                                 memcpy(ProbeInfo2, &TempProbeInfo, sizeof(struct BusLogic_ProbeInfo));
 612                                 LastInterchange = j;
 613                         }
 614                 }
 615         }
 616 }
 617
 618
 619 /*
 620   BusLogic_InitializeMultiMasterProbeInfo initializes the list of I/O Address
 621   and Bus Probe Information to be checked for potential BusLogic MultiMaster
 622   SCSI Host Adapters by interrogating the PCI Configuration Space on PCI
 623   machines as well as from the list of standard BusLogic MultiMaster ISA
 624   I/O Addresses.  It returns the number of PCI MultiMaster Host Adapters found.
 625 */
 626
 627 static int __init BusLogic_InitializeMultiMasterProbeInfo(struct BusLogic_HostAdapter
 628                                                           *PrototypeHostAdapter)
 629 {
 630         struct BusLogic_ProbeInfo *PrimaryProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount];
 631         int NonPrimaryPCIMultiMasterIndex = BusLogic_ProbeInfoCount + 1;
 632         int NonPrimaryPCIMultiMasterCount = 0, PCIMultiMasterCount = 0;
 633         bool ForceBusDeviceScanningOrder = false;
 634         bool ForceBusDeviceScanningOrderChecked = false;
 635         bool StandardAddressSeen[6];
 636         struct pci_dev *PCI_Device = NULL;
 637         int i;
 638         if (BusLogic_ProbeInfoCount >= BusLogic_MaxHostAdapters)
 639                 return 0;
 640         BusLogic_ProbeInfoCount++;
 641         for (i = 0; i < 6; i++)
 642                 StandardAddressSeen[i] = false;
 643         /*
 644            Iterate over the MultiMaster PCI Host Adapters.  For each enumerated host
 645            adapter, determine whether its ISA Compatible I/O Port is enabled and if
 646            so, whether it is assigned the Primary I/O Address.  A host adapter that is
 647            assigned the Primary I/O Address will always be the preferred boot device.
 648            The MultiMaster BIOS will first recognize a host adapter at the Primary I/O
 649            Address, then any other PCI host adapters, and finally any host adapters
 650            located at the remaining standard ISA I/O Addresses.  When a PCI host
 651            adapter is found with its ISA Compatible I/O Port enabled, a command is
 652            issued to disable the ISA Compatible I/O Port, and it is noted that the
 653            particular standard ISA I/O Address need not be probed.
 654          */
 655         PrimaryProbeInfo->IO_Address = 0;
 656         while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER, PCI_Device)) != NULL) {
 657                 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
 658                 struct BusLogic_PCIHostAdapterInformation PCIHostAdapterInformation;
 659                 enum BusLogic_ISACompatibleIOPort ModifyIOAddressRequest;
 660                 unsigned char Bus;
 661                 unsigned char Device;
 662                 unsigned int IRQ_Channel;
 663                 unsigned long BaseAddress0;
 664                 unsigned long BaseAddress1;
 665                 unsigned long IO_Address;
 666                 unsigned long PCI_Address;
 667
 668                 if (pci_enable_device(PCI_Device))
 669                         continue;
 670
 671                 if (pci_set_dma_mask(PCI_Device, DMA_BIT_MASK(32) ))
 672                         continue;
 673
 674                 Bus = PCI_Device->bus->number;
 675                 Device = PCI_Device->devfn >> 3;
 676                 IRQ_Channel = PCI_Device->irq;
 677                 IO_Address = BaseAddress0 = pci_resource_start(PCI_Device, 0);
 678                 PCI_Address = BaseAddress1 = pci_resource_start(PCI_Device, 1);
 679
 680                 if (pci_resource_flags(PCI_Device, 0) & IORESOURCE_MEM) {
 681                         BusLogic_Error("BusLogic: Base Address0 0x%X not I/O for " "MultiMaster Host Adapter\n", NULL, BaseAddress0);
 682                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 683                         continue;
 684                 }
 685                 if (pci_resource_flags(PCI_Device, 1) & IORESOURCE_IO) {
 686                         BusLogic_Error("BusLogic: Base Address1 0x%X not Memory for " "MultiMaster Host Adapter\n", NULL, BaseAddress1);
 687                         BusLogic_Error("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, Bus, Device, PCI_Address);
 688                         continue;
 689                 }
 690                 if (IRQ_Channel == 0) {
 691                         BusLogic_Error("BusLogic: IRQ Channel %d invalid for " "MultiMaster Host Adapter\n", NULL, IRQ_Channel);
 692                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 693                         continue;
 694                 }
 695                 if (BusLogic_GlobalOptions.TraceProbe) {
 696                         BusLogic_Notice("BusLogic: PCI MultiMaster Host Adapter " "detected at\n", NULL);
 697                         BusLogic_Notice("BusLogic: PCI Bus %d Device %d I/O Address " "0x%X PCI Address 0x%X\n", NULL, Bus, Device, IO_Address, PCI_Address);
 698                 }
 699                 /*
 700                    Issue the Inquire PCI Host Adapter Information command to determine
 701                    the ISA Compatible I/O Port.  If the ISA Compatible I/O Port is
 702                    known and enabled, note that the particular Standard ISA I/O
 703                    Address should not be probed.
 704                  */
 705                 HostAdapter->IO_Address = IO_Address;
 706                 BusLogic_InterruptReset(HostAdapter);
 707                 if (BusLogic_Command(HostAdapter, BusLogic_InquirePCIHostAdapterInformation, NULL, 0, &PCIHostAdapterInformation, sizeof(PCIHostAdapterInformation))
 708                     == sizeof(PCIHostAdapterInformation)) {
 709                         if (PCIHostAdapterInformation.ISACompatibleIOPort < 6)
 710                                 StandardAddressSeen[PCIHostAdapterInformation.ISACompatibleIOPort] = true;
 711                 } else
 712                         PCIHostAdapterInformation.ISACompatibleIOPort = BusLogic_IO_Disable;
 713                 /*
 714                  * Issue the Modify I/O Address command to disable the ISA Compatible
 715                  * I/O Port.  On PCI Host Adapters, the Modify I/O Address command
 716                  * allows modification of the ISA compatible I/O Address that the Host
 717                  * Adapter responds to; it does not affect the PCI compliant I/O Address
 718                  * assigned at system initialization.
 719                  */
 720                 ModifyIOAddressRequest = BusLogic_IO_Disable;
 721                 BusLogic_Command(HostAdapter, BusLogic_ModifyIOAddress, &ModifyIOAddressRequest, sizeof(ModifyIOAddressRequest), NULL, 0);
 722                 /*
 723                    For the first MultiMaster Host Adapter enumerated, issue the Fetch
 724                    Host Adapter Local RAM command to read byte 45 of the AutoSCSI area,
 725                    for the setting of the "Use Bus And Device # For PCI Scanning Seq."
 726                    option.  Issue the Inquire Board ID command since this option is
 727                    only valid for the BT-948/958/958D.
 728                  */
 729                 if (!ForceBusDeviceScanningOrderChecked) {
 730                         struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
 731                         struct BusLogic_AutoSCSIByte45 AutoSCSIByte45;
 732                         struct BusLogic_BoardID BoardID;
 733                         FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_AutoSCSI_BaseOffset + 45;
 734                         FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(AutoSCSIByte45);
 735                         BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &AutoSCSIByte45, sizeof(AutoSCSIByte45));
 736                         BusLogic_Command(HostAdapter, BusLogic_InquireBoardID, NULL, 0, &BoardID, sizeof(BoardID));
 737                         if (BoardID.FirmwareVersion1stDigit == '5')
 738                                 ForceBusDeviceScanningOrder = AutoSCSIByte45.ForceBusDeviceScanningOrder;
 739                         ForceBusDeviceScanningOrderChecked = true;
 740                 }
 741                 /*
 742                    Determine whether this MultiMaster Host Adapter has its ISA
 743                    Compatible I/O Port enabled and is assigned the Primary I/O Address.
 744                    If it does, then it is the Primary MultiMaster Host Adapter and must
 745                    be recognized first.  If it does not, then it is added to the list
 746                    for probing after any Primary MultiMaster Host Adapter is probed.
 747                  */
 748                 if (PCIHostAdapterInformation.ISACompatibleIOPort == BusLogic_IO_330) {
 749                         PrimaryProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 750                         PrimaryProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 751                         PrimaryProbeInfo->IO_Address = IO_Address;
 752                         PrimaryProbeInfo->PCI_Address = PCI_Address;
 753                         PrimaryProbeInfo->Bus = Bus;
 754                         PrimaryProbeInfo->Device = Device;
 755                         PrimaryProbeInfo->IRQ_Channel = IRQ_Channel;
 756                         PrimaryProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 757                         PCIMultiMasterCount++;
 758                 } else if (BusLogic_ProbeInfoCount < BusLogic_MaxHostAdapters) {
 759                         struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
 760                         ProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 761                         ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 762                         ProbeInfo->IO_Address = IO_Address;
 763                         ProbeInfo->PCI_Address = PCI_Address;
 764                         ProbeInfo->Bus = Bus;
 765                         ProbeInfo->Device = Device;
 766                         ProbeInfo->IRQ_Channel = IRQ_Channel;
 767                         ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 768                         NonPrimaryPCIMultiMasterCount++;
 769                         PCIMultiMasterCount++;
 770                 } else
 771                         BusLogic_Warning("BusLogic: Too many Host Adapters " "detected\n", NULL);
 772         }
 773         /*
 774            If the AutoSCSI "Use Bus And Device # For PCI Scanning Seq." option is ON
 775            for the first enumerated MultiMaster Host Adapter, and if that host adapter
 776            is a BT-948/958/958D, then the MultiMaster BIOS will recognize MultiMaster
 777            Host Adapters in the order of increasing PCI Bus and Device Number.  In
 778            that case, sort the probe information into the same order the BIOS uses.
 779            If this option is OFF, then the MultiMaster BIOS will recognize MultiMaster
 780            Host Adapters in the order they are enumerated by the PCI BIOS, and hence
 781            no sorting is necessary.
 782          */
 783         if (ForceBusDeviceScanningOrder)
 784                 BusLogic_SortProbeInfo(&BusLogic_ProbeInfoList[NonPrimaryPCIMultiMasterIndex], NonPrimaryPCIMultiMasterCount);
 785         /*
 786            If no PCI MultiMaster Host Adapter is assigned the Primary I/O Address,
 787            then the Primary I/O Address must be probed explicitly before any PCI
 788            host adapters are probed.
 789          */
 790         if (!BusLogic_ProbeOptions.NoProbeISA)
 791                 if (PrimaryProbeInfo->IO_Address == 0 &&
 792                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 793                                  BusLogic_ProbeOptions.Probe330)) {
 794                         PrimaryProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 795                         PrimaryProbeInfo->HostAdapterBusType = BusLogic_ISA_Bus;
 796                         PrimaryProbeInfo->IO_Address = 0x330;
 797                 }
 798         /*
 799            Append the list of standard BusLogic MultiMaster ISA I/O Addresses,
 800            omitting the Primary I/O Address which has already been handled.
 801          */
 802         if (!BusLogic_ProbeOptions.NoProbeISA) {
 803                 if (!StandardAddressSeen[1] &&
 804                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 805                                  BusLogic_ProbeOptions.Probe334))
 806                         BusLogic_AppendProbeAddressISA(0x334);
 807                 if (!StandardAddressSeen[2] &&
 808                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 809                                  BusLogic_ProbeOptions.Probe230))
 810                         BusLogic_AppendProbeAddressISA(0x230);
 811                 if (!StandardAddressSeen[3] &&
 812                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 813                                  BusLogic_ProbeOptions.Probe234))
 814                         BusLogic_AppendProbeAddressISA(0x234);
 815                 if (!StandardAddressSeen[4] &&
 816                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 817                                  BusLogic_ProbeOptions.Probe130))
 818                         BusLogic_AppendProbeAddressISA(0x130);
 819                 if (!StandardAddressSeen[5] &&
 820                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 821                                  BusLogic_ProbeOptions.Probe134))
 822                         BusLogic_AppendProbeAddressISA(0x134);
 823         }
 824         /*
 825            Iterate over the older non-compliant MultiMaster PCI Host Adapters,
 826            noting the PCI bus location and assigned IRQ Channel.
 827          */
 828         PCI_Device = NULL;
 829         while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC, PCI_Device)) != NULL) {
 830                 unsigned char Bus;
 831                 unsigned char Device;
 832                 unsigned int IRQ_Channel;
 833                 unsigned long IO_Address;
 834
 835                 if (pci_enable_device(PCI_Device))
 836                         continue;
 837
 838                 if (pci_set_dma_mask(PCI_Device, DMA_BIT_MASK(32)))
 839                         continue;
 840
 841                 Bus = PCI_Device->bus->number;
 842                 Device = PCI_Device->devfn >> 3;
 843                 IRQ_Channel = PCI_Device->irq;
 844                 IO_Address = pci_resource_start(PCI_Device, 0);
 845
 846                 if (IO_Address == 0 || IRQ_Channel == 0)
 847                         continue;
 848                 for (i = 0; i < BusLogic_ProbeInfoCount; i++) {
 849                         struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[i];
 850                         if (ProbeInfo->IO_Address == IO_Address && ProbeInfo->HostAdapterType == BusLogic_MultiMaster) {
 851                                 ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 852                                 ProbeInfo->PCI_Address = 0;
 853                                 ProbeInfo->Bus = Bus;
 854                                 ProbeInfo->Device = Device;
 855                                 ProbeInfo->IRQ_Channel = IRQ_Channel;
 856                                 ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 857                                 break;
 858                         }
 859                 }
 860         }
 861         return PCIMultiMasterCount;
 862 }
 863
 864
 865 /*
 866   BusLogic_InitializeFlashPointProbeInfo initializes the list of I/O Address
 867   and Bus Probe Information to be checked for potential BusLogic FlashPoint
 868   Host Adapters by interrogating the PCI Configuration Space.  It returns the
 869   number of FlashPoint Host Adapters found.
 870 */
 871
 872 static int __init BusLogic_InitializeFlashPointProbeInfo(struct BusLogic_HostAdapter
 873                                                          *PrototypeHostAdapter)
 874 {
 875         int FlashPointIndex = BusLogic_ProbeInfoCount, FlashPointCount = 0;
 876         struct pci_dev *PCI_Device = NULL;
 877         /*
 878            Interrogate PCI Configuration Space for any FlashPoint Host Adapters.
 879          */
 880         while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT, PCI_Device)) != NULL) {
 881                 unsigned char Bus;
 882                 unsigned char Device;
 883                 unsigned int IRQ_Channel;
 884                 unsigned long BaseAddress0;
 885                 unsigned long BaseAddress1;
 886                 unsigned long IO_Address;
 887                 unsigned long PCI_Address;
 888
 889                 if (pci_enable_device(PCI_Device))
 890                         continue;
 891
 892                 if (pci_set_dma_mask(PCI_Device, DMA_BIT_MASK(32)))
 893                         continue;
 894
 895                 Bus = PCI_Device->bus->number;
 896                 Device = PCI_Device->devfn >> 3;
 897                 IRQ_Channel = PCI_Device->irq;
 898                 IO_Address = BaseAddress0 = pci_resource_start(PCI_Device, 0);
 899                 PCI_Address = BaseAddress1 = pci_resource_start(PCI_Device, 1);
 900 #ifdef CONFIG_SCSI_FLASHPOINT
 901                 if (pci_resource_flags(PCI_Device, 0) & IORESOURCE_MEM) {
 902                         BusLogic_Error("BusLogic: Base Address0 0x%X not I/O for " "FlashPoint Host Adapter\n", NULL, BaseAddress0);
 903                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 904                         continue;
 905                 }
 906                 if (pci_resource_flags(PCI_Device, 1) & IORESOURCE_IO) {
 907                         BusLogic_Error("BusLogic: Base Address1 0x%X not Memory for " "FlashPoint Host Adapter\n", NULL, BaseAddress1);
 908                         BusLogic_Error("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, Bus, Device, PCI_Address);
 909                         continue;
 910                 }
 911                 if (IRQ_Channel == 0) {
 912                         BusLogic_Error("BusLogic: IRQ Channel %d invalid for " "FlashPoint Host Adapter\n", NULL, IRQ_Channel);
 913                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 914                         continue;
 915                 }
 916                 if (BusLogic_GlobalOptions.TraceProbe) {
 917                         BusLogic_Notice("BusLogic: FlashPoint Host Adapter " "detected at\n", NULL);
 918                         BusLogic_Notice("BusLogic: PCI Bus %d Device %d I/O Address " "0x%X PCI Address 0x%X\n", NULL, Bus, Device, IO_Address, PCI_Address);
 919                 }
 920                 if (BusLogic_ProbeInfoCount < BusLogic_MaxHostAdapters) {
 921                         struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
 922                         ProbeInfo->HostAdapterType = BusLogic_FlashPoint;
 923                         ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 924                         ProbeInfo->IO_Address = IO_Address;
 925                         ProbeInfo->PCI_Address = PCI_Address;
 926                         ProbeInfo->Bus = Bus;
 927                         ProbeInfo->Device = Device;
 928                         ProbeInfo->IRQ_Channel = IRQ_Channel;
 929                         ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 930                         FlashPointCount++;
 931                 } else
 932                         BusLogic_Warning("BusLogic: Too many Host Adapters " "detected\n", NULL);
 933 #else
 934                 BusLogic_Error("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", NULL, Bus, Device);
 935                 BusLogic_Error("BusLogic: I/O Address 0x%X PCI Address 0x%X, irq %d, " "but FlashPoint\n", NULL, IO_Address, PCI_Address, IRQ_Channel);
 936                 BusLogic_Error("BusLogic: support was omitted in this kernel " "configuration.\n", NULL);
 937 #endif
 938         }
 939         /*
 940            The FlashPoint BIOS will scan for FlashPoint Host Adapters in the order of
 941            increasing PCI Bus and Device Number, so sort the probe information into
 942            the same order the BIOS uses.
 943          */
 944         BusLogic_SortProbeInfo(&BusLogic_ProbeInfoList[FlashPointIndex], FlashPointCount);
 945         return FlashPointCount;
 946 }
 947
 948
 949 /*
 950   BusLogic_InitializeProbeInfoList initializes the list of I/O Address and Bus
 951   Probe Information to be checked for potential BusLogic SCSI Host Adapters by
 952   interrogating the PCI Configuration Space on PCI machines as well as from the
 953   list of standard BusLogic MultiMaster ISA I/O Addresses.  By default, if both
 954   FlashPoint and PCI MultiMaster Host Adapters are present, this driver will
 955   probe for FlashPoint Host Adapters first unless the BIOS primary disk is
 956   controlled by the first PCI MultiMaster Host Adapter, in which case
 957   MultiMaster Host Adapters will be probed first.  The BusLogic Driver Options
 958   specifications "MultiMasterFirst" and "FlashPointFirst" can be used to force
 959   a particular probe order.
 960 */
 961
 962 static void __init BusLogic_InitializeProbeInfoList(struct BusLogic_HostAdapter
 963                                                     *PrototypeHostAdapter)
 964 {
 965         /*
 966            If a PCI BIOS is present, interrogate it for MultiMaster and FlashPoint
 967            Host Adapters; otherwise, default to the standard ISA MultiMaster probe.
 968          */
 969         if (!BusLogic_ProbeOptions.NoProbePCI) {
 970                 if (BusLogic_ProbeOptions.MultiMasterFirst) {
 971                         BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
 972                         BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
 973                 } else if (BusLogic_ProbeOptions.FlashPointFirst) {
 974                         BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
 975                         BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
 976                 } else {
 977                         int FlashPointCount = BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
 978                         int PCIMultiMasterCount = BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
 979                         if (FlashPointCount > 0 && PCIMultiMasterCount > 0) {
 980                                 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[FlashPointCount];
 981                                 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
 982                                 struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
 983                                 struct BusLogic_BIOSDriveMapByte Drive0MapByte;
 984                                 while (ProbeInfo->HostAdapterBusType != BusLogic_PCI_Bus)
 985                                         ProbeInfo++;
 986                                 HostAdapter->IO_Address = ProbeInfo->IO_Address;
 987                                 FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_BIOS_BaseOffset + BusLogic_BIOS_DriveMapOffset + 0;
 988                                 FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(Drive0MapByte);
 989                                 BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &Drive0MapByte, sizeof(Drive0MapByte));
 990                                 /*
 991                                    If the Map Byte for BIOS Drive 0 indicates that BIOS Drive 0
 992                                    is controlled by this PCI MultiMaster Host Adapter, then
 993                                    reverse the probe order so that MultiMaster Host Adapters are
 994                                    probed before FlashPoint Host Adapters.
 995                                  */
 996                                 if (Drive0MapByte.DiskGeometry != BusLogic_BIOS_Disk_Not_Installed) {
 997                                         struct BusLogic_ProbeInfo SavedProbeInfo[BusLogic_MaxHostAdapters];
 998                                         int MultiMasterCount = BusLogic_ProbeInfoCount - FlashPointCount;
 999                                         memcpy(SavedProbeInfo, BusLogic_ProbeInfoList, BusLogic_ProbeInfoCount * sizeof(struct BusLogic_ProbeInfo));
1000                                         memcpy(&BusLogic_ProbeInfoList[0], &SavedProbeInfo[FlashPointCount], MultiMasterCount * sizeof(struct BusLogic_ProbeInfo));
1001                                         memcpy(&BusLogic_ProbeInfoList[MultiMasterCount], &SavedProbeInfo[0], FlashPointCount * sizeof(struct BusLogic_ProbeInfo));
1002                                 }
1003                         }
1004                 }
1005         } else
1006                 BusLogic_InitializeProbeInfoListISA(PrototypeHostAdapter);
1007 }
1008
1009
1010 #else
1011 #define BusLogic_InitializeProbeInfoList(adapter) \
1012                 BusLogic_InitializeProbeInfoListISA(adapter)
1013 #endif                          /* CONFIG_PCI */
1014
1015
1016 /*
1017   BusLogic_Failure prints a standardized error message, and then returns false.
1018 */
1019
1020 static bool BusLogic_Failure(struct BusLogic_HostAdapter *HostAdapter, char *ErrorMessage)
1021 {
1022         BusLogic_AnnounceDriver(HostAdapter);
1023         if (HostAdapter->HostAdapterBusType == BusLogic_PCI_Bus) {
1024                 BusLogic_Error("While configuring BusLogic PCI Host Adapter at\n", HostAdapter);
1025                 BusLogic_Error("Bus %d Device %d I/O Address 0x%X PCI Address 0x%X:\n", HostAdapter, HostAdapter->Bus, HostAdapter->Device, HostAdapter->IO_Address, HostAdapter->PCI_Address);
1026         } else
1027                 BusLogic_Error("While configuring BusLogic Host Adapter at " "I/O Address 0x%X:\n", HostAdapter, HostAdapter->IO_Address);
1028         BusLogic_Error("%s FAILED - DETACHING\n", HostAdapter, ErrorMessage);
1029         if (BusLogic_CommandFailureReason != NULL)
1030                 BusLogic_Error("ADDITIONAL FAILURE INFO - %s\n", HostAdapter, BusLogic_CommandFailureReason);
1031         return false;
1032 }
1033
1034
1035 /*
1036   BusLogic_ProbeHostAdapter probes for a BusLogic Host Adapter.
1037 */
1038
1039 static bool __init BusLogic_ProbeHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
1040 {
1041         union BusLogic_StatusRegister StatusRegister;
1042         union BusLogic_InterruptRegister InterruptRegister;
1043         union BusLogic_GeometryRegister GeometryRegister;
1044         /*
1045            FlashPoint Host Adapters are Probed by the FlashPoint SCCB Manager.
1046          */
1047         if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1048                 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1049                 FlashPointInfo->BaseAddress = (u32) HostAdapter->IO_Address;
1050                 FlashPointInfo->IRQ_Channel = HostAdapter->IRQ_Channel;
1051                 FlashPointInfo->Present = false;
1052                 if (!(FlashPoint_ProbeHostAdapter(FlashPointInfo) == 0 && FlashPointInfo->Present)) {
1053                         BusLogic_Error("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", HostAdapter, HostAdapter->Bus, HostAdapter->Device);
1054                         BusLogic_Error("BusLogic: I/O Address 0x%X PCI Address 0x%X, " "but FlashPoint\n", HostAdapter, HostAdapter->IO_Address, HostAdapter->PCI_Address);
1055                         BusLogic_Error("BusLogic: Probe Function failed to validate it.\n", HostAdapter);
1056                         return false;
1057                 }
1058                 if (BusLogic_GlobalOptions.TraceProbe)
1059                         BusLogic_Notice("BusLogic_Probe(0x%X): FlashPoint Found\n", HostAdapter, HostAdapter->IO_Address);
1060                 /*
1061                    Indicate the Host Adapter Probe completed successfully.
1062                  */
1063                 return true;
1064         }
1065         /*
1066            Read the Status, Interrupt, and Geometry Registers to test if there are I/O
1067            ports that respond, and to check the values to determine if they are from a
1068            BusLogic Host Adapter.  A nonexistent I/O port will return 0xFF, in which
1069            case there is definitely no BusLogic Host Adapter at this base I/O Address.
1070            The test here is a subset of that used by the BusLogic Host Adapter BIOS.
1071          */
1072         StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1073         InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
1074         GeometryRegister.All = BusLogic_ReadGeometryRegister(HostAdapter);
1075         if (BusLogic_GlobalOptions.TraceProbe)
1076                 BusLogic_Notice("BusLogic_Probe(0x%X): Status 0x%02X, Interrupt 0x%02X, " "Geometry 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All, InterruptRegister.All, GeometryRegister.All);
1077         if (StatusRegister.All == 0 || StatusRegister.sr.DiagnosticActive || StatusRegister.sr.CommandParameterRegisterBusy || StatusRegister.sr.Reserved || StatusRegister.sr.CommandInvalid || InterruptRegister.ir.Reserved != 0)
1078                 return false;
1079         /*
1080            Check the undocumented Geometry Register to test if there is an I/O port
1081            that responded.  Adaptec Host Adapters do not implement the Geometry
1082            Register, so this test helps serve to avoid incorrectly recognizing an
1083            Adaptec 1542A or 1542B as a BusLogic.  Unfortunately, the Adaptec 1542C
1084            series does respond to the Geometry Register I/O port, but it will be
1085            rejected later when the Inquire Extended Setup Information command is
1086            issued in BusLogic_CheckHostAdapter.  The AMI FastDisk Host Adapter is a
1087            BusLogic clone that implements the same interface as earlier BusLogic
1088            Host Adapters, including the undocumented commands, and is therefore
1089            supported by this driver.  However, the AMI FastDisk always returns 0x00
1090            upon reading the Geometry Register, so the extended translation option
1091            should always be left disabled on the AMI FastDisk.
1092          */
1093         if (GeometryRegister.All == 0xFF)
1094                 return false;
1095         /*
1096            Indicate the Host Adapter Probe completed successfully.
1097          */
1098         return true;
1099 }
1100
1101
1102 /*
1103   BusLogic_HardwareResetHostAdapter issues a Hardware Reset to the Host Adapter
1104   and waits for Host Adapter Diagnostics to complete.  If HardReset is true, a
1105   Hard Reset is performed which also initiates a SCSI Bus Reset.  Otherwise, a
1106   Soft Reset is performed which only resets the Host Adapter without forcing a
1107   SCSI Bus Reset.
1108 */
1109
1110 static bool BusLogic_HardwareResetHostAdapter(struct BusLogic_HostAdapter
1111                                                  *HostAdapter, bool HardReset)
1112 {
1113         union BusLogic_StatusRegister StatusRegister;
1114         int TimeoutCounter;
1115         /*
1116            FlashPoint Host Adapters are Hard Reset by the FlashPoint SCCB Manager.
1117          */
1118         if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1119                 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1120                 FlashPointInfo->HostSoftReset = !HardReset;
1121                 FlashPointInfo->ReportDataUnderrun = true;
1122                 HostAdapter->CardHandle = FlashPoint_HardwareResetHostAdapter(FlashPointInfo);
1123                 if (HostAdapter->CardHandle == FlashPoint_BadCardHandle)
1124                         return false;
1125                 /*
1126                    Indicate the Host Adapter Hard Reset completed successfully.
1127                  */
1128                 return true;
1129         }
1130         /*
1131            Issue a Hard Reset or Soft Reset Command to the Host Adapter.  The Host
1132            Adapter should respond by setting Diagnostic Active in the Status Register.
1133          */
1134         if (HardReset)
1135                 BusLogic_HardReset(HostAdapter);
1136         else
1137                 BusLogic_SoftReset(HostAdapter);
1138         /*
1139            Wait until Diagnostic Active is set in the Status Register.
1140          */
1141         TimeoutCounter = 5 * 10000;
1142         while (--TimeoutCounter >= 0) {
1143                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1144                 if (StatusRegister.sr.DiagnosticActive)
1145                         break;
1146                 udelay(100);
1147         }
1148         if (BusLogic_GlobalOptions.TraceHardwareReset)
1149                 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Diagnostic Active, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1150         if (TimeoutCounter < 0)
1151                 return false;
1152         /*
1153            Wait 100 microseconds to allow completion of any initial diagnostic
1154            activity which might leave the contents of the Status Register
1155            unpredictable.
1156          */
1157         udelay(100);
1158         /*
1159            Wait until Diagnostic Active is reset in the Status Register.
1160          */
1161         TimeoutCounter = 10 * 10000;
1162         while (--TimeoutCounter >= 0) {
1163                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1164                 if (!StatusRegister.sr.DiagnosticActive)
1165                         break;
1166                 udelay(100);
1167         }
1168         if (BusLogic_GlobalOptions.TraceHardwareReset)
1169                 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Diagnostic Completed, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1170         if (TimeoutCounter < 0)
1171                 return false;
1172         /*
1173            Wait until at least one of the Diagnostic Failure, Host Adapter Ready,
1174            or Data In Register Ready bits is set in the Status Register.
1175          */
1176         TimeoutCounter = 10000;
1177         while (--TimeoutCounter >= 0) {
1178                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1179                 if (StatusRegister.sr.DiagnosticFailure || StatusRegister.sr.HostAdapterReady || StatusRegister.sr.DataInRegisterReady)
1180                         break;
1181                 udelay(100);
1182         }
1183         if (BusLogic_GlobalOptions.TraceHardwareReset)
1184                 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Host Adapter Ready, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1185         if (TimeoutCounter < 0)
1186                 return false;
1187         /*
1188            If Diagnostic Failure is set or Host Adapter Ready is reset, then an
1189            error occurred during the Host Adapter diagnostics.  If Data In Register
1190            Ready is set, then there is an Error Code available.
1191          */
1192         if (StatusRegister.sr.DiagnosticFailure || !StatusRegister.sr.HostAdapterReady) {
1193                 BusLogic_CommandFailureReason = NULL;
1194                 BusLogic_Failure(HostAdapter, "HARD RESET DIAGNOSTICS");
1195                 BusLogic_Error("HOST ADAPTER STATUS REGISTER = %02X\n", HostAdapter, StatusRegister.All);
1196                 if (StatusRegister.sr.DataInRegisterReady) {
1197                         unsigned char ErrorCode = BusLogic_ReadDataInRegister(HostAdapter);
1198                         BusLogic_Error("HOST ADAPTER ERROR CODE = %d\n", HostAdapter, ErrorCode);
1199                 }
1200                 return false;
1201         }
1202         /*
1203            Indicate the Host Adapter Hard Reset completed successfully.
1204          */
1205         return true;
1206 }
1207
1208
1209 /*
1210   BusLogic_CheckHostAdapter checks to be sure this really is a BusLogic
1211   Host Adapter.
1212 */
1213
1214 static bool __init BusLogic_CheckHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
1215 {
1216         struct BusLogic_ExtendedSetupInformation ExtendedSetupInformation;
1217         unsigned char RequestedReplyLength;
1218         bool Result = true;
1219         /*
1220            FlashPoint Host Adapters do not require this protection.
1221          */
1222         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
1223                 return true;
1224         /*
1225            Issue the Inquire Extended Setup Information command.  Only genuine
1226            BusLogic Host Adapters and true clones support this command.  Adaptec 1542C
1227            series Host Adapters that respond to the Geometry Register I/O port will
1228            fail this command.
1229          */
1230         RequestedReplyLength = sizeof(ExtendedSetupInformation);
1231         if (BusLogic_Command(HostAdapter, BusLogic_InquireExtendedSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &ExtendedSetupInformation, sizeof(ExtendedSetupInformation))
1232             != sizeof(ExtendedSetupInformation))
1233                 Result = false;
1234         /*
1235            Provide tracing information if requested and return.
1236          */
1237         if (BusLogic_GlobalOptions.TraceProbe)
1238                 BusLogic_Notice("BusLogic_Check(0x%X): MultiMaster %s\n", HostAdapter, HostAdapter->IO_Address, (Result ? "Found" : "Not Found"));
1239         return Result;
1240 }
1241
1242
1243 /*
1244   BusLogic_ReadHostAdapterConfiguration reads the Configuration Information
1245   from Host Adapter and initializes the Host Adapter structure.
1246 */
1247
1248 static bool __init BusLogic_ReadHostAdapterConfiguration(struct BusLogic_HostAdapter
1249                                                             *HostAdapter)
1250 {
1251         struct BusLogic_BoardID BoardID;
1252         struct BusLogic_Configuration Configuration;
1253         struct BusLogic_SetupInformation SetupInformation;
1254         struct BusLogic_ExtendedSetupInformation ExtendedSetupInformation;
1255         unsigned char HostAdapterModelNumber[5];
1256         unsigned char FirmwareVersion3rdDigit;
1257         unsigned char FirmwareVersionLetter;
1258         struct BusLogic_PCIHostAdapterInformation PCIHostAdapterInformation;
1259         struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
1260         struct BusLogic_AutoSCSIData AutoSCSIData;
1261         union BusLogic_GeometryRegister GeometryRegister;
1262         unsigned char RequestedReplyLength;
1263         unsigned char *TargetPointer, Character;
1264         int TargetID, i;
1265         /*
1266            Configuration Information for FlashPoint Host Adapters is provided in the
1267            FlashPoint_Info structure by the FlashPoint SCCB Manager's Probe Function.
1268            Initialize fields in the Host Adapter structure from the FlashPoint_Info
1269            structure.
1270          */
1271         if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1272                 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1273                 TargetPointer = HostAdapter->ModelName;
1274                 *TargetPointer++ = 'B';
1275                 *TargetPointer++ = 'T';
1276                 *TargetPointer++ = '-';
1277                 for (i = 0; i < sizeof(FlashPointInfo->ModelNumber); i++)
1278                         *TargetPointer++ = FlashPointInfo->ModelNumber[i];
1279                 *TargetPointer++ = '\0';
1280                 strcpy(HostAdapter->FirmwareVersion, FlashPoint_FirmwareVersion);
1281                 HostAdapter->SCSI_ID = FlashPointInfo->SCSI_ID;
1282                 HostAdapter->ExtendedTranslationEnabled = FlashPointInfo->ExtendedTranslationEnabled;
1283                 HostAdapter->ParityCheckingEnabled = FlashPointInfo->ParityCheckingEnabled;
1284                 HostAdapter->BusResetEnabled = !FlashPointInfo->HostSoftReset;
1285                 HostAdapter->LevelSensitiveInterrupt = true;
1286                 HostAdapter->HostWideSCSI = FlashPointInfo->HostWideSCSI;
1287                 HostAdapter->HostDifferentialSCSI = false;
1288                 HostAdapter->HostSupportsSCAM = true;
1289                 HostAdapter->HostUltraSCSI = true;
1290                 HostAdapter->ExtendedLUNSupport = true;
1291                 HostAdapter->TerminationInfoValid = true;
1292                 HostAdapter->LowByteTerminated = FlashPointInfo->LowByteTerminated;
1293                 HostAdapter->HighByteTerminated = FlashPointInfo->HighByteTerminated;
1294                 HostAdapter->SCAM_Enabled = FlashPointInfo->SCAM_Enabled;
1295                 HostAdapter->SCAM_Level2 = FlashPointInfo->SCAM_Level2;
1296                 HostAdapter->DriverScatterGatherLimit = BusLogic_ScatterGatherLimit;
1297                 HostAdapter->MaxTargetDevices = (HostAdapter->HostWideSCSI ? 16 : 8);
1298                 HostAdapter->MaxLogicalUnits = 32;
1299                 HostAdapter->InitialCCBs = 4 * BusLogic_CCB_AllocationGroupSize;
1300                 HostAdapter->IncrementalCCBs = BusLogic_CCB_AllocationGroupSize;
1301                 HostAdapter->DriverQueueDepth = 255;
1302                 HostAdapter->HostAdapterQueueDepth = HostAdapter->DriverQueueDepth;
1303                 HostAdapter->SynchronousPermitted = FlashPointInfo->SynchronousPermitted;
1304                 HostAdapter->FastPermitted = FlashPointInfo->FastPermitted;
1305                 HostAdapter->UltraPermitted = FlashPointInfo->UltraPermitted;
1306                 HostAdapter->WidePermitted = FlashPointInfo->WidePermitted;
1307                 HostAdapter->DisconnectPermitted = FlashPointInfo->DisconnectPermitted;
1308                 HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1309                 goto Common;
1310         }
1311         /*
1312            Issue the Inquire Board ID command.
1313          */
1314         if (BusLogic_Command(HostAdapter, BusLogic_InquireBoardID, NULL, 0, &BoardID, sizeof(BoardID)) != sizeof(BoardID))
1315                 return BusLogic_Failure(HostAdapter, "INQUIRE BOARD ID");
1316         /*
1317            Issue the Inquire Configuration command.
1318          */
1319         if (BusLogic_Command(HostAdapter, BusLogic_InquireConfiguration, NULL, 0, &Configuration, sizeof(Configuration))
1320             != sizeof(Configuration))
1321                 return BusLogic_Failure(HostAdapter, "INQUIRE CONFIGURATION");
1322         /*
1323            Issue the Inquire Setup Information command.
1324          */
1325         RequestedReplyLength = sizeof(SetupInformation);
1326         if (BusLogic_Command(HostAdapter, BusLogic_InquireSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &SetupInformation, sizeof(SetupInformation))
1327             != sizeof(SetupInformation))
1328                 return BusLogic_Failure(HostAdapter, "INQUIRE SETUP INFORMATION");
1329         /*
1330            Issue the Inquire Extended Setup Information command.
1331          */
1332         RequestedReplyLength = sizeof(ExtendedSetupInformation);
1333         if (BusLogic_Command(HostAdapter, BusLogic_InquireExtendedSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &ExtendedSetupInformation, sizeof(ExtendedSetupInformation))
1334             != sizeof(ExtendedSetupInformation))
1335                 return BusLogic_Failure(HostAdapter, "INQUIRE EXTENDED SETUP INFORMATION");
1336         /*
1337            Issue the Inquire Firmware Version 3rd Digit command.
1338          */
1339         FirmwareVersion3rdDigit = '\0';
1340         if (BoardID.FirmwareVersion1stDigit > '0')
1341                 if (BusLogic_Command(HostAdapter, BusLogic_InquireFirmwareVersion3rdDigit, NULL, 0, &FirmwareVersion3rdDigit, sizeof(FirmwareVersion3rdDigit))
1342                     != sizeof(FirmwareVersion3rdDigit))
1343                         return BusLogic_Failure(HostAdapter, "INQUIRE FIRMWARE 3RD DIGIT");
1344         /*
1345            Issue the Inquire Host Adapter Model Number command.
1346          */
1347         if (ExtendedSetupInformation.BusType == 'A' && BoardID.FirmwareVersion1stDigit == '2')
1348                 /* BusLogic BT-542B ISA 2.xx */
1349                 strcpy(HostAdapterModelNumber, "542B");
1350         else if (ExtendedSetupInformation.BusType == 'E' && BoardID.FirmwareVersion1stDigit == '2' && (BoardID.FirmwareVersion2ndDigit <= '1' || (BoardID.FirmwareVersion2ndDigit == '2' && FirmwareVersion3rdDigit == '0')))
1351                 /* BusLogic BT-742A EISA 2.1x or 2.20 */
1352                 strcpy(HostAdapterModelNumber, "742A");
1353         else if (ExtendedSetupInformation.BusType == 'E' && BoardID.FirmwareVersion1stDigit == '0')
1354                 /* AMI FastDisk EISA Series 441 0.x */
1355                 strcpy(HostAdapterModelNumber, "747A");
1356         else {
1357                 RequestedReplyLength = sizeof(HostAdapterModelNumber);
1358                 if (BusLogic_Command(HostAdapter, BusLogic_InquireHostAdapterModelNumber, &RequestedReplyLength, sizeof(RequestedReplyLength), &HostAdapterModelNumber, sizeof(HostAdapterModelNumber))
1359                     != sizeof(HostAdapterModelNumber))
1360                         return BusLogic_Failure(HostAdapter, "INQUIRE HOST ADAPTER MODEL NUMBER");
1361         }
1362         /*
1363            BusLogic MultiMaster Host Adapters can be identified by their model number
1364            and the major version number of their firmware as follows:
1365
1366            5.xx       BusLogic "W" Series Host Adapters:
1367            BT-948/958/958D
1368            4.xx       BusLogic "C" Series Host Adapters:
1369            BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
1370            3.xx       BusLogic "S" Series Host Adapters:
1371            BT-747S/747D/757S/757D/445S/545S/542D
1372            BT-542B/742A (revision H)
1373            2.xx       BusLogic "A" Series Host Adapters:
1374            BT-542B/742A (revision G and below)
1375            0.xx       AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
1376          */
1377         /*
1378            Save the Model Name and Host Adapter Name in the Host Adapter structure.
1379          */
1380         TargetPointer = HostAdapter->ModelName;
1381         *TargetPointer++ = 'B';
1382         *TargetPointer++ = 'T';
1383         *TargetPointer++ = '-';
1384         for (i = 0; i < sizeof(HostAdapterModelNumber); i++) {
1385                 Character = HostAdapterModelNumber[i];
1386                 if (Character == ' ' || Character == '\0')
1387                         break;
1388                 *TargetPointer++ = Character;
1389         }
1390         *TargetPointer++ = '\0';
1391         /*
1392            Save the Firmware Version in the Host Adapter structure.
1393          */
1394         TargetPointer = HostAdapter->FirmwareVersion;
1395         *TargetPointer++ = BoardID.FirmwareVersion1stDigit;
1396         *TargetPointer++ = '.';
1397         *TargetPointer++ = BoardID.FirmwareVersion2ndDigit;
1398         if (FirmwareVersion3rdDigit != ' ' && FirmwareVersion3rdDigit != '\0')
1399                 *TargetPointer++ = FirmwareVersion3rdDigit;
1400         *TargetPointer = '\0';
1401         /*
1402            Issue the Inquire Firmware Version Letter command.
1403          */
1404         if (strcmp(HostAdapter->FirmwareVersion, "3.3") >= 0) {
1405                 if (BusLogic_Command(HostAdapter, BusLogic_InquireFirmwareVersionLetter, NULL, 0, &FirmwareVersionLetter, sizeof(FirmwareVersionLetter))
1406                     != sizeof(FirmwareVersionLetter))
1407                         return BusLogic_Failure(HostAdapter, "INQUIRE FIRMWARE VERSION LETTER");
1408                 if (FirmwareVersionLetter != ' ' && FirmwareVersionLetter != '\0')
1409                         *TargetPointer++ = FirmwareVersionLetter;
1410                 *TargetPointer = '\0';
1411         }
1412         /*
1413            Save the Host Adapter SCSI ID in the Host Adapter structure.
1414          */
1415         HostAdapter->SCSI_ID = Configuration.HostAdapterID;
1416         /*
1417            Determine the Bus Type and save it in the Host Adapter structure, determine
1418            and save the IRQ Channel if necessary, and determine and save the DMA
1419            Channel for ISA Host Adapters.
1420          */
1421         HostAdapter->HostAdapterBusType = BusLogic_HostAdapterBusTypes[HostAdapter->ModelName[3] - '4'];
1422         if (HostAdapter->IRQ_Channel == 0) {
1423                 if (Configuration.IRQ_Channel9)
1424                         HostAdapter->IRQ_Channel = 9;
1425                 else if (Configuration.IRQ_Channel10)
1426                         HostAdapter->IRQ_Channel = 10;
1427                 else if (Configuration.IRQ_Channel11)
1428                         HostAdapter->IRQ_Channel = 11;
1429                 else if (Configuration.IRQ_Channel12)
1430                         HostAdapter->IRQ_Channel = 12;
1431                 else if (Configuration.IRQ_Channel14)
1432                         HostAdapter->IRQ_Channel = 14;
1433                 else if (Configuration.IRQ_Channel15)
1434                         HostAdapter->IRQ_Channel = 15;
1435         }
1436         if (HostAdapter->HostAdapterBusType == BusLogic_ISA_Bus) {
1437                 if (Configuration.DMA_Channel5)
1438                         HostAdapter->DMA_Channel = 5;
1439                 else if (Configuration.DMA_Channel6)
1440                         HostAdapter->DMA_Channel = 6;
1441                 else if (Configuration.DMA_Channel7)
1442                         HostAdapter->DMA_Channel = 7;
1443         }
1444         /*
1445            Determine whether Extended Translation is enabled and save it in
1446            the Host Adapter structure.
1447          */
1448         GeometryRegister.All = BusLogic_ReadGeometryRegister(HostAdapter);
1449         HostAdapter->ExtendedTranslationEnabled = GeometryRegister.gr.ExtendedTranslationEnabled;
1450         /*
1451            Save the Scatter Gather Limits, Level Sensitive Interrupt flag, Wide
1452            SCSI flag, Differential SCSI flag, SCAM Supported flag, and
1453            Ultra SCSI flag in the Host Adapter structure.
1454          */
1455         HostAdapter->HostAdapterScatterGatherLimit = ExtendedSetupInformation.ScatterGatherLimit;
1456         HostAdapter->DriverScatterGatherLimit = HostAdapter->HostAdapterScatterGatherLimit;
1457         if (HostAdapter->HostAdapterScatterGatherLimit > BusLogic_ScatterGatherLimit)
1458                 HostAdapter->DriverScatterGatherLimit = BusLogic_ScatterGatherLimit;
1459         if (ExtendedSetupInformation.Misc.LevelSensitiveInterrupt)
1460                 HostAdapter->LevelSensitiveInterrupt = true;
1461         HostAdapter->HostWideSCSI = ExtendedSetupInformation.HostWideSCSI;
1462         HostAdapter->HostDifferentialSCSI = ExtendedSetupInformation.HostDifferentialSCSI;
1463         HostAdapter->HostSupportsSCAM = ExtendedSetupInformation.HostSupportsSCAM;
1464         HostAdapter->HostUltraSCSI = ExtendedSetupInformation.HostUltraSCSI;
1465         /*
1466            Determine whether Extended LUN Format CCBs are supported and save the
1467            information in the Host Adapter structure.
1468          */
1469         if (HostAdapter->FirmwareVersion[0] == '5' || (HostAdapter->FirmwareVersion[0] == '4' && HostAdapter->HostWideSCSI))
1470                 HostAdapter->ExtendedLUNSupport = true;
1471         /*
1472            Issue the Inquire PCI Host Adapter Information command to read the
1473            Termination Information from "W" series MultiMaster Host Adapters.
1474          */
1475         if (HostAdapter->FirmwareVersion[0] == '5') {
1476                 if (BusLogic_Command(HostAdapter, BusLogic_InquirePCIHostAdapterInformation, NULL, 0, &PCIHostAdapterInformation, sizeof(PCIHostAdapterInformation))
1477                     != sizeof(PCIHostAdapterInformation))
1478                         return BusLogic_Failure(HostAdapter, "INQUIRE PCI HOST ADAPTER INFORMATION");
1479                 /*
1480                    Save the Termination Information in the Host Adapter structure.
1481                  */
1482                 if (PCIHostAdapterInformation.GenericInfoValid) {
1483                         HostAdapter->TerminationInfoValid = true;
1484                         HostAdapter->LowByteTerminated = PCIHostAdapterInformation.LowByteTerminated;
1485                         HostAdapter->HighByteTerminated = PCIHostAdapterInformation.HighByteTerminated;
1486                 }
1487         }
1488         /*
1489            Issue the Fetch Host Adapter Local RAM command to read the AutoSCSI data
1490            from "W" and "C" series MultiMaster Host Adapters.
1491          */
1492         if (HostAdapter->FirmwareVersion[0] >= '4') {
1493                 FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_AutoSCSI_BaseOffset;
1494                 FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(AutoSCSIData);
1495                 if (BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &AutoSCSIData, sizeof(AutoSCSIData))
1496                     != sizeof(AutoSCSIData))
1497                         return BusLogic_Failure(HostAdapter, "FETCH HOST ADAPTER LOCAL RAM");
1498                 /*
1499                    Save the Parity Checking Enabled, Bus Reset Enabled, and Termination
1500                    Information in the Host Adapter structure.
1501                  */
1502                 HostAdapter->ParityCheckingEnabled = AutoSCSIData.ParityCheckingEnabled;
1503                 HostAdapter->BusResetEnabled = AutoSCSIData.BusResetEnabled;
1504                 if (HostAdapter->FirmwareVersion[0] == '4') {
1505                         HostAdapter->TerminationInfoValid = true;
1506                         HostAdapter->LowByteTerminated = AutoSCSIData.LowByteTerminated;
1507                         HostAdapter->HighByteTerminated = AutoSCSIData.HighByteTerminated;
1508                 }
1509                 /*
1510                    Save the Wide Permitted, Fast Permitted, Synchronous Permitted,
1511                    Disconnect Permitted, Ultra Permitted, and SCAM Information in the
1512                    Host Adapter structure.
1513                  */
1514                 HostAdapter->WidePermitted = AutoSCSIData.WidePermitted;
1515                 HostAdapter->FastPermitted = AutoSCSIData.FastPermitted;
1516                 HostAdapter->SynchronousPermitted = AutoSCSIData.SynchronousPermitted;
1517                 HostAdapter->DisconnectPermitted = AutoSCSIData.DisconnectPermitted;
1518                 if (HostAdapter->HostUltraSCSI)
1519                         HostAdapter->UltraPermitted = AutoSCSIData.UltraPermitted;
1520                 if (HostAdapter->HostSupportsSCAM) {
1521                         HostAdapter->SCAM_Enabled = AutoSCSIData.SCAM_Enabled;
1522                         HostAdapter->SCAM_Level2 = AutoSCSIData.SCAM_Level2;
1523                 }
1524         }
1525         /*
1526            Initialize fields in the Host Adapter structure for "S" and "A" series
1527            MultiMaster Host Adapters.
1528          */
1529         if (HostAdapter->FirmwareVersion[0] < '4') {
1530                 if (SetupInformation.SynchronousInitiationEnabled) {
1531                         HostAdapter->SynchronousPermitted = 0xFF;
1532                         if (HostAdapter->HostAdapterBusType == BusLogic_EISA_Bus) {
1533                                 if (ExtendedSetupInformation.Misc.FastOnEISA)
1534                                         HostAdapter->FastPermitted = 0xFF;
1535                                 if (strcmp(HostAdapter->ModelName, "BT-757") == 0)
1536                                         HostAdapter->WidePermitted = 0xFF;
1537                         }
1538                 }
1539                 HostAdapter->DisconnectPermitted = 0xFF;
1540                 HostAdapter->ParityCheckingEnabled = SetupInformation.ParityCheckingEnabled;
1541                 HostAdapter->BusResetEnabled = true;
1542         }
1543         /*
1544            Determine the maximum number of Target IDs and Logical Units supported by
1545            this driver for Wide and Narrow Host Adapters.
1546          */
1547         HostAdapter->MaxTargetDevices = (HostAdapter->HostWideSCSI ? 16 : 8);
1548         HostAdapter->MaxLogicalUnits = (HostAdapter->ExtendedLUNSupport ? 32 : 8);
1549         /*
1550            Select appropriate values for the Mailbox Count, Driver Queue Depth,
1551            Initial CCBs, and Incremental CCBs variables based on whether or not Strict
1552            Round Robin Mode is supported.  If Strict Round Robin Mode is supported,
1553            then there is no performance degradation in using the maximum possible
1554            number of Outgoing and Incoming Mailboxes and allowing the Tagged and
1555            Untagged Queue Depths to determine the actual utilization.  If Strict Round
1556            Robin Mode is not supported, then the Host Adapter must scan all the
1557            Outgoing Mailboxes whenever an Outgoing Mailbox entry is made, which can
1558            cause a substantial performance penalty.  The host adapters actually have
1559            room to store the following number of CCBs internally; that is, they can
1560            internally queue and manage this many active commands on the SCSI bus
1561            simultaneously.  Performance measurements demonstrate that the Driver Queue
1562            Depth should be set to the Mailbox Count, rather than the Host Adapter
1563            Queue Depth (internal CCB capacity), as it is more efficient to have the
1564            queued commands waiting in Outgoing Mailboxes if necessary than to block
1565            the process in the higher levels of the SCSI Subsystem.
1566
1567            192          BT-948/958/958D
1568            100          BT-946C/956C/956CD/747C/757C/757CD/445C
1569            50   BT-545C/540CF
1570            30   BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
1571          */
1572         if (HostAdapter->FirmwareVersion[0] == '5')
1573                 HostAdapter->HostAdapterQueueDepth = 192;
1574         else if (HostAdapter->FirmwareVersion[0] == '4')
1575                 HostAdapter->HostAdapterQueueDepth = (HostAdapter->HostAdapterBusType != BusLogic_ISA_Bus ? 100 : 50);
1576         else
1577                 HostAdapter->HostAdapterQueueDepth = 30;
1578         if (strcmp(HostAdapter->FirmwareVersion, "3.31") >= 0) {
1579                 HostAdapter->StrictRoundRobinModeSupport = true;
1580                 HostAdapter->MailboxCount = BusLogic_MaxMailboxes;
1581         } else {
1582                 HostAdapter->StrictRoundRobinModeSupport = false;
1583                 HostAdapter->MailboxCount = 32;
1584         }
1585         HostAdapter->DriverQueueDepth = HostAdapter->MailboxCount;
1586         HostAdapter->InitialCCBs = 4 * BusLogic_CCB_AllocationGroupSize;
1587         HostAdapter->IncrementalCCBs = BusLogic_CCB_AllocationGroupSize;
1588         /*
1589            Tagged Queuing support is available and operates properly on all "W" series
1590            MultiMaster Host Adapters, on "C" series MultiMaster Host Adapters with
1591            firmware version 4.22 and above, and on "S" series MultiMaster Host
1592            Adapters with firmware version 3.35 and above.
1593          */
1594         HostAdapter->TaggedQueuingPermitted = 0;
1595         switch (HostAdapter->FirmwareVersion[0]) {
1596         case '5':
1597                 HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1598                 break;
1599         case '4':
1600                 if (strcmp(HostAdapter->FirmwareVersion, "4.22") >= 0)
1601                         HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1602                 break;
1603         case '3':
1604                 if (strcmp(HostAdapter->FirmwareVersion, "3.35") >= 0)
1605                         HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1606                 break;
1607         }
1608         /*
1609            Determine the Host Adapter BIOS Address if the BIOS is enabled and
1610            save it in the Host Adapter structure.  The BIOS is disabled if the
1611            BIOS_Address is 0.
1612          */
1613         HostAdapter->BIOS_Address = ExtendedSetupInformation.BIOS_Address << 12;
1614         /*
1615            ISA Host Adapters require Bounce Buffers if there is more than 16MB memory.
1616          */
1617         if (HostAdapter->HostAdapterBusType == BusLogic_ISA_Bus && (void *) high_memory > (void *) MAX_DMA_ADDRESS)
1618                 HostAdapter->BounceBuffersRequired = true;
1619         /*
1620            BusLogic BT-445S Host Adapters prior to board revision E have a hardware
1621            bug whereby when the BIOS is enabled, transfers to/from the same address
1622            range the BIOS occupies modulo 16MB are handled incorrectly.  Only properly
1623            functioning BT-445S Host Adapters have firmware version 3.37, so require
1624            that ISA Bounce Buffers be used for the buggy BT-445S models if there is
1625            more than 16MB memory.
1626          */
1627         if (HostAdapter->BIOS_Address > 0 && strcmp(HostAdapter->ModelName, "BT-445S") == 0 && strcmp(HostAdapter->FirmwareVersion, "3.37") < 0 && (void *) high_memory > (void *) MAX_DMA_ADDRESS)
1628                 HostAdapter->BounceBuffersRequired = true;
1629         /*
1630            Initialize parameters common to MultiMaster and FlashPoint Host Adapters.
1631          */
1632       Common:
1633         /*
1634            Initialize the Host Adapter Full Model Name from the Model Name.
1635          */
1636         strcpy(HostAdapter->FullModelName, "BusLogic ");
1637         strcat(HostAdapter->FullModelName, HostAdapter->ModelName);
1638         /*
1639            Select an appropriate value for the Tagged Queue Depth either from a
1640            BusLogic Driver Options specification, or based on whether this Host
1641            Adapter requires that ISA Bounce Buffers be used.  The Tagged Queue Depth
1642            is left at 0 for automatic determination in BusLogic_SelectQueueDepths.
1643            Initialize the Untagged Queue Depth.
1644          */
1645         for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++) {
1646                 unsigned char QueueDepth = 0;
1647                 if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->QueueDepth[TargetID] > 0)
1648                         QueueDepth = HostAdapter->DriverOptions->QueueDepth[TargetID];
1649                 else if (HostAdapter->BounceBuffersRequired)
1650                         QueueDepth = BusLogic_TaggedQueueDepthBB;
1651                 HostAdapter->QueueDepth[TargetID] = QueueDepth;
1652         }
1653         if (HostAdapter->BounceBuffersRequired)
1654                 HostAdapter->UntaggedQueueDepth = BusLogic_UntaggedQueueDepthBB;
1655         else
1656                 HostAdapter->UntaggedQueueDepth = BusLogic_UntaggedQueueDepth;
1657         if (HostAdapter->DriverOptions != NULL)
1658                 HostAdapter->CommonQueueDepth = HostAdapter->DriverOptions->CommonQueueDepth;
1659         if (HostAdapter->CommonQueueDepth > 0 && HostAdapter->CommonQueueDepth < HostAdapter->UntaggedQueueDepth)
1660                 HostAdapter->UntaggedQueueDepth = HostAdapter->CommonQueueDepth;
1661         /*
1662            Tagged Queuing is only allowed if Disconnect/Reconnect is permitted.
1663            Therefore, mask the Tagged Queuing Permitted Default bits with the
1664            Disconnect/Reconnect Permitted bits.
1665          */
1666         HostAdapter->TaggedQueuingPermitted &= HostAdapter->DisconnectPermitted;
1667         /*
1668            Combine the default Tagged Queuing Permitted bits with any BusLogic Driver
1669            Options Tagged Queuing specification.
1670          */
1671         if (HostAdapter->DriverOptions != NULL)
1672                 HostAdapter->TaggedQueuingPermitted =
1673                     (HostAdapter->DriverOptions->TaggedQueuingPermitted & HostAdapter->DriverOptions->TaggedQueuingPermittedMask) | (HostAdapter->TaggedQueuingPermitted & ~HostAdapter->DriverOptions->TaggedQueuingPermittedMask);
1674
1675         /*
1676            Select an appropriate value for Bus Settle Time either from a BusLogic
1677            Driver Options specification, or from BusLogic_DefaultBusSettleTime.
1678          */
1679         if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->BusSettleTime > 0)
1680                 HostAdapter->BusSettleTime = HostAdapter->DriverOptions->BusSettleTime;
1681         else
1682                 HostAdapter->BusSettleTime = BusLogic_DefaultBusSettleTime;
1683         /*
1684            Indicate reading the Host Adapter Configuration completed successfully.
1685          */
1686         return true;
1687 }
1688
1689
1690 /*
1691   BusLogic_ReportHostAdapterConfiguration reports the configuration of
1692   Host Adapter.
1693 */
1694
1695 static bool __init BusLogic_ReportHostAdapterConfiguration(struct BusLogic_HostAdapter
1696                                                               *HostAdapter)
1697 {
1698         unsigned short AllTargetsMask = (1 << HostAdapter->MaxTargetDevices) - 1;
1699         unsigned short SynchronousPermitted, FastPermitted;
1700         unsigned short UltraPermitted, WidePermitted;
1701         unsigned short DisconnectPermitted, TaggedQueuingPermitted;
1702         bool CommonSynchronousNegotiation, CommonTaggedQueueDepth;
1703         char SynchronousString[BusLogic_MaxTargetDevices + 1];
1704         char WideString[BusLogic_MaxTargetDevices + 1];
1705         char DisconnectString[BusLogic_MaxTargetDevices + 1];
1706         char TaggedQueuingString[BusLogic_MaxTargetDevices + 1];
1707         char *SynchronousMessage = SynchronousString;
1708         char *WideMessage = WideString;
1709         char *DisconnectMessage = DisconnectString;
1710         char *TaggedQueuingMessage = TaggedQueuingString;
1711         int TargetID;
1712         BusLogic_Info("Configuring BusLogic Model %s %s%s%s%s SCSI Host Adapter\n",
1713                       HostAdapter, HostAdapter->ModelName,
1714                       BusLogic_HostAdapterBusNames[HostAdapter->HostAdapterBusType], (HostAdapter->HostWideSCSI ? " Wide" : ""), (HostAdapter->HostDifferentialSCSI ? " Differential" : ""), (HostAdapter->HostUltraSCSI ? " Ultra" : ""));
1715         BusLogic_Info("  Firmware Version: %s, I/O Address: 0x%X, " "IRQ Channel: %d/%s\n", HostAdapter, HostAdapter->FirmwareVersion, HostAdapter->IO_Address, HostAdapter->IRQ_Channel, (HostAdapter->LevelSensitiveInterrupt ? "Level" : "Edge"));
1716         if (HostAdapter->HostAdapterBusType != BusLogic_PCI_Bus) {
1717                 BusLogic_Info("  DMA Channel: ", HostAdapter);
1718                 if (HostAdapter->DMA_Channel > 0)
1719                         BusLogic_Info("%d, ", HostAdapter, HostAdapter->DMA_Channel);
1720                 else
1721                         BusLogic_Info("None, ", HostAdapter);
1722                 if (HostAdapter->BIOS_Address > 0)
1723                         BusLogic_Info("BIOS Address: 0x%X, ", HostAdapter, HostAdapter->BIOS_Address);
1724                 else
1725                         BusLogic_Info("BIOS Address: None, ", HostAdapter);
1726         } else {
1727                 BusLogic_Info("  PCI Bus: %d, Device: %d, Address: ", HostAdapter, HostAdapter->Bus, HostAdapter->Device);
1728                 if (HostAdapter->PCI_Address > 0)
1729                         BusLogic_Info("0x%X, ", HostAdapter, HostAdapter->PCI_Address);
1730                 else
1731                         BusLogic_Info("Unassigned, ", HostAdapter);
1732         }
1733         BusLogic_Info("Host Adapter SCSI ID: %d\n", HostAdapter, HostAdapter->SCSI_ID);
1734         BusLogic_Info("  Parity Checking: %s, Extended Translation: %s\n", HostAdapter, (HostAdapter->ParityCheckingEnabled ? "Enabled" : "Disabled"), (HostAdapter->ExtendedTranslationEnabled ? "Enabled" : "Disabled"));
1735         AllTargetsMask &= ~(1 << HostAdapter->SCSI_ID);
1736         SynchronousPermitted = HostAdapter->SynchronousPermitted & AllTargetsMask;
1737         FastPermitted = HostAdapter->FastPermitted & AllTargetsMask;
1738         UltraPermitted = HostAdapter->UltraPermitted & AllTargetsMask;
1739         if ((BusLogic_MultiMasterHostAdapterP(HostAdapter) && (HostAdapter->FirmwareVersion[0] >= '4' || HostAdapter->HostAdapterBusType == BusLogic_EISA_Bus)) || BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1740                 CommonSynchronousNegotiation = false;
1741                 if (SynchronousPermitted == 0) {
1742                         SynchronousMessage = "Disabled";
1743                         CommonSynchronousNegotiation = true;
1744                 } else if (SynchronousPermitted == AllTargetsMask) {
1745                         if (FastPermitted == 0) {
1746                                 SynchronousMessage = "Slow";
1747                                 CommonSynchronousNegotiation = true;
1748                         } else if (FastPermitted == AllTargetsMask) {
1749                                 if (UltraPermitted == 0) {
1750                                         SynchronousMessage = "Fast";
1751                                         CommonSynchronousNegotiation = true;
1752                                 } else if (UltraPermitted == AllTargetsMask) {
1753                                         SynchronousMessage = "Ultra";
1754                                         CommonSynchronousNegotiation = true;
1755                                 }
1756                         }
1757                 }
1758                 if (!CommonSynchronousNegotiation) {
1759                         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1760                                 SynchronousString[TargetID] = ((!(SynchronousPermitted & (1 << TargetID))) ? 'N' : (!(FastPermitted & (1 << TargetID)) ? 'S' : (!(UltraPermitted & (1 << TargetID)) ? 'F' : 'U')));
1761                         SynchronousString[HostAdapter->SCSI_ID] = '#';
1762                         SynchronousString[HostAdapter->MaxTargetDevices] = '\0';
1763                 }
1764         } else
1765                 SynchronousMessage = (SynchronousPermitted == 0 ? "Disabled" : "Enabled");
1766         WidePermitted = HostAdapter->WidePermitted & AllTargetsMask;
1767         if (WidePermitted == 0)
1768                 WideMessage = "Disabled";
1769         else if (WidePermitted == AllTargetsMask)
1770                 WideMessage = "Enabled";
1771         else {
1772                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1773                         WideString[TargetID] = ((WidePermitted & (1 << TargetID)) ? 'Y' : 'N');
1774                 WideString[HostAdapter->SCSI_ID] = '#';
1775                 WideString[HostAdapter->MaxTargetDevices] = '\0';
1776         }
1777         DisconnectPermitted = HostAdapter->DisconnectPermitted & AllTargetsMask;
1778         if (DisconnectPermitted == 0)
1779                 DisconnectMessage = "Disabled";
1780         else if (DisconnectPermitted == AllTargetsMask)
1781                 DisconnectMessage = "Enabled";
1782         else {
1783                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1784                         DisconnectString[TargetID] = ((DisconnectPermitted & (1 << TargetID)) ? 'Y' : 'N');
1785                 DisconnectString[HostAdapter->SCSI_ID] = '#';
1786                 DisconnectString[HostAdapter->MaxTargetDevices] = '\0';
1787         }
1788         TaggedQueuingPermitted = HostAdapter->TaggedQueuingPermitted & AllTargetsMask;
1789         if (TaggedQueuingPermitted == 0)
1790                 TaggedQueuingMessage = "Disabled";
1791         else if (TaggedQueuingPermitted == AllTargetsMask)
1792                 TaggedQueuingMessage = "Enabled";
1793         else {
1794                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1795                         TaggedQueuingString[TargetID] = ((TaggedQueuingPermitted & (1 << TargetID)) ? 'Y' : 'N');
1796                 TaggedQueuingString[HostAdapter->SCSI_ID] = '#';
1797                 TaggedQueuingString[HostAdapter->MaxTargetDevices] = '\0';
1798         }
1799         BusLogic_Info("  Synchronous Negotiation: %s, Wide Negotiation: %s\n", HostAdapter, SynchronousMessage, WideMessage);
1800         BusLogic_Info("  Disconnect/Reconnect: %s, Tagged Queuing: %s\n", HostAdapter, DisconnectMessage, TaggedQueuingMessage);
1801         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
1802                 BusLogic_Info("  Scatter/Gather Limit: %d of %d segments, " "Mailboxes: %d\n", HostAdapter, HostAdapter->DriverScatterGatherLimit, HostAdapter->HostAdapterScatterGatherLimit, HostAdapter->MailboxCount);
1803                 BusLogic_Info("  Driver Queue Depth: %d, " "Host Adapter Queue Depth: %d\n", HostAdapter, HostAdapter->DriverQueueDepth, HostAdapter->HostAdapterQueueDepth);
1804         } else
1805                 BusLogic_Info("  Driver Queue Depth: %d, " "Scatter/Gather Limit: %d segments\n", HostAdapter, HostAdapter->DriverQueueDepth, HostAdapter->DriverScatterGatherLimit);
1806         BusLogic_Info("  Tagged Queue Depth: ", HostAdapter);
1807         CommonTaggedQueueDepth = true;
1808         for (TargetID = 1; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1809                 if (HostAdapter->QueueDepth[TargetID] != HostAdapter->QueueDepth[0]) {
1810                         CommonTaggedQueueDepth = false;
1811                         break;
1812                 }
1813         if (CommonTaggedQueueDepth) {
1814                 if (HostAdapter->QueueDepth[0] > 0)
1815                         BusLogic_Info("%d", HostAdapter, HostAdapter->QueueDepth[0]);
1816                 else
1817                         BusLogic_Info("Automatic", HostAdapter);
1818         } else
1819                 BusLogic_Info("Individual", HostAdapter);
1820         BusLogic_Info(", Untagged Queue Depth: %d\n", HostAdapter, HostAdapter->UntaggedQueueDepth);
1821         if (HostAdapter->TerminationInfoValid) {
1822                 if (HostAdapter->HostWideSCSI)
1823                         BusLogic_Info("  SCSI Bus Termination: %s", HostAdapter, (HostAdapter->LowByteTerminated ? (HostAdapter->HighByteTerminated ? "Both Enabled" : "Low Enabled")
1824                                                                                   : (HostAdapter->HighByteTerminated ? "High Enabled" : "Both Disabled")));
1825                 else
1826                         BusLogic_Info("  SCSI Bus Termination: %s", HostAdapter, (HostAdapter->LowByteTerminated ? "Enabled" : "Disabled"));
1827                 if (HostAdapter->HostSupportsSCAM)
1828                         BusLogic_Info(", SCAM: %s", HostAdapter, (HostAdapter->SCAM_Enabled ? (HostAdapter->SCAM_Level2 ? "Enabled, Level 2" : "Enabled, Level 1")
1829                                                                   : "Disabled"));
1830                 BusLogic_Info("\n", HostAdapter);
1831         }
1832         /*
1833            Indicate reporting the Host Adapter configuration completed successfully.
1834          */
1835         return true;
1836 }
1837
1838
1839 /*
1840   BusLogic_AcquireResources acquires the system resources necessary to use
1841   Host Adapter.
1842 */
1843
1844 static bool __init BusLogic_AcquireResources(struct BusLogic_HostAdapter *HostAdapter)
1845 {
1846         if (HostAdapter->IRQ_Channel == 0) {
1847                 BusLogic_Error("NO LEGAL INTERRUPT CHANNEL ASSIGNED - DETACHING\n", HostAdapter);
1848                 return false;
1849         }
1850         /*
1851            Acquire shared access to the IRQ Channel.
1852          */
1853         if (request_irq(HostAdapter->IRQ_Channel, BusLogic_InterruptHandler, IRQF_SHARED, HostAdapter->FullModelName, HostAdapter) < 0) {
1854                 BusLogic_Error("UNABLE TO ACQUIRE IRQ CHANNEL %d - DETACHING\n", HostAdapter, HostAdapter->IRQ_Channel);
1855                 return false;
1856         }
1857         HostAdapter->IRQ_ChannelAcquired = true;
1858         /*
1859            Acquire exclusive access to the DMA Channel.
1860          */
1861         if (HostAdapter->DMA_Channel > 0) {
1862                 if (request_dma(HostAdapter->DMA_Channel, HostAdapter->FullModelName) < 0) {
1863                         BusLogic_Error("UNABLE TO ACQUIRE DMA CHANNEL %d - DETACHING\n", HostAdapter, HostAdapter->DMA_Channel);
1864                         return false;
1865                 }
1866                 set_dma_mode(HostAdapter->DMA_Channel, DMA_MODE_CASCADE);
1867                 enable_dma(HostAdapter->DMA_Channel);
1868                 HostAdapter->DMA_ChannelAcquired = true;
1869         }
1870         /*
1871            Indicate the System Resource Acquisition completed successfully,
1872          */
1873         return true;
1874 }
1875
1876
1877 /*
1878   BusLogic_ReleaseResources releases any system resources previously acquired
1879   by BusLogic_AcquireResources.
1880 */
1881
1882 static void BusLogic_ReleaseResources(struct BusLogic_HostAdapter *HostAdapter)
1883 {
1884         /*
1885            Release shared access to the IRQ Channel.
1886          */
1887         if (HostAdapter->IRQ_ChannelAcquired)
1888                 free_irq(HostAdapter->IRQ_Channel, HostAdapter);
1889         /*
1890            Release exclusive access to the DMA Channel.
1891          */
1892         if (HostAdapter->DMA_ChannelAcquired)
1893                 free_dma(HostAdapter->DMA_Channel);
1894         /*
1895            Release any allocated memory structs not released elsewhere
1896          */
1897         if (HostAdapter->MailboxSpace)
1898                 pci_free_consistent(HostAdapter->PCI_Device, HostAdapter->MailboxSize, HostAdapter->MailboxSpace, HostAdapter->MailboxSpaceHandle);
1899         pci_dev_put(HostAdapter->PCI_Device);
1900         HostAdapter->MailboxSpace = NULL;
1901         HostAdapter->MailboxSpaceHandle = 0;
1902         HostAdapter->MailboxSize = 0;
1903 }
1904
1905
1906 /*
1907   BusLogic_InitializeHostAdapter initializes Host Adapter.  This is the only
1908   function called during SCSI Host Adapter detection which modifies the state
1909   of the Host Adapter from its initial power on or hard reset state.
1910 */
1911
1912 static bool BusLogic_InitializeHostAdapter(struct BusLogic_HostAdapter
1913                                               *HostAdapter)
1914 {
1915         struct BusLogic_ExtendedMailboxRequest ExtendedMailboxRequest;
1916         enum BusLogic_RoundRobinModeRequest RoundRobinModeRequest;
1917         enum BusLogic_SetCCBFormatRequest SetCCBFormatRequest;
1918         int TargetID;
1919         /*
1920            Initialize the pointers to the first and last CCBs that are queued for
1921            completion processing.
1922          */
1923         HostAdapter->FirstCompletedCCB = NULL;
1924         HostAdapter->LastCompletedCCB = NULL;
1925         /*
1926            Initialize the Bus Device Reset Pending CCB, Tagged Queuing Active,
1927            Command Successful Flag, Active Commands, and Commands Since Reset
1928            for each Target Device.
1929          */
1930         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
1931                 HostAdapter->BusDeviceResetPendingCCB[TargetID] = NULL;
1932                 HostAdapter->TargetFlags[TargetID].TaggedQueuingActive = false;
1933                 HostAdapter->TargetFlags[TargetID].CommandSuccessfulFlag = false;
1934                 HostAdapter->ActiveCommands[TargetID] = 0;
1935                 HostAdapter->CommandsSinceReset[TargetID] = 0;
1936         }
1937         /*
1938            FlashPoint Host Adapters do not use Outgoing and Incoming Mailboxes.
1939          */
1940         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
1941                 goto Done;
1942         /*
1943            Initialize the Outgoing and Incoming Mailbox pointers.
1944          */
1945         HostAdapter->MailboxSize = HostAdapter->MailboxCount * (sizeof(struct BusLogic_OutgoingMailbox) + sizeof(struct BusLogic_IncomingMailbox));
1946         HostAdapter->MailboxSpace = pci_alloc_consistent(HostAdapter->PCI_Device, HostAdapter->MailboxSize, &HostAdapter->MailboxSpaceHandle);
1947         if (HostAdapter->MailboxSpace == NULL)
1948                 return BusLogic_Failure(HostAdapter, "MAILBOX ALLOCATION");
1949         HostAdapter->FirstOutgoingMailbox = (struct BusLogic_OutgoingMailbox *) HostAdapter->MailboxSpace;
1950         HostAdapter->LastOutgoingMailbox = HostAdapter->FirstOutgoingMailbox + HostAdapter->MailboxCount - 1;
1951         HostAdapter->NextOutgoingMailbox = HostAdapter->FirstOutgoingMailbox;
1952         HostAdapter->FirstIncomingMailbox = (struct BusLogic_IncomingMailbox *) (HostAdapter->LastOutgoingMailbox + 1);
1953         HostAdapter->LastIncomingMailbox = HostAdapter->FirstIncomingMailbox + HostAdapter->MailboxCount - 1;
1954         HostAdapter->NextIncomingMailbox = HostAdapter->FirstIncomingMailbox;
1955
1956         /*
1957            Initialize the Outgoing and Incoming Mailbox structures.
1958          */
1959         memset(HostAdapter->FirstOutgoingMailbox, 0, HostAdapter->MailboxCount * sizeof(struct BusLogic_OutgoingMailbox));
1960         memset(HostAdapter->FirstIncomingMailbox, 0, HostAdapter->MailboxCount * sizeof(struct BusLogic_IncomingMailbox));
1961         /*
1962            Initialize the Host Adapter's Pointer to the Outgoing/Incoming Mailboxes.
1963          */
1964         ExtendedMailboxRequest.MailboxCount = HostAdapter->MailboxCount;
1965         ExtendedMailboxRequest.BaseMailboxAddress = (u32) HostAdapter->MailboxSpaceHandle;
1966         if (BusLogic_Command(HostAdapter, BusLogic_InitializeExtendedMailbox, &ExtendedMailboxRequest, sizeof(ExtendedMailboxRequest), NULL, 0) < 0)
1967                 return BusLogic_Failure(HostAdapter, "MAILBOX INITIALIZATION");
1968         /*
1969            Enable Strict Round Robin Mode if supported by the Host Adapter.  In
1970            Strict Round Robin Mode, the Host Adapter only looks at the next Outgoing
1971            Mailbox for each new command, rather than scanning through all the
1972            Outgoing Mailboxes to find any that have new commands in them.  Strict
1973            Round Robin Mode is significantly more efficient.
1974          */
1975         if (HostAdapter->StrictRoundRobinModeSupport) {
1976                 RoundRobinModeRequest = BusLogic_StrictRoundRobinMode;
1977                 if (BusLogic_Command(HostAdapter, BusLogic_EnableStrictRoundRobinMode, &RoundRobinModeRequest, sizeof(RoundRobinModeRequest), NULL, 0) < 0)
1978                         return BusLogic_Failure(HostAdapter, "ENABLE STRICT ROUND ROBIN MODE");
1979         }
1980         /*
1981            For Host Adapters that support Extended LUN Format CCBs, issue the Set CCB
1982            Format command to allow 32 Logical Units per Target Device.
1983          */
1984         if (HostAdapter->ExtendedLUNSupport) {
1985                 SetCCBFormatRequest = BusLogic_ExtendedLUNFormatCCB;
1986                 if (BusLogic_Command(HostAdapter, BusLogic_SetCCBFormat, &SetCCBFormatRequest, sizeof(SetCCBFormatRequest), NULL, 0) < 0)
1987                         return BusLogic_Failure(HostAdapter, "SET CCB FORMAT");
1988         }
1989         /*
1990            Announce Successful Initialization.
1991          */
1992       Done:
1993         if (!HostAdapter->HostAdapterInitialized) {
1994                 BusLogic_Info("*** %s Initialized Successfully ***\n", HostAdapter, HostAdapter->FullModelName);
1995                 BusLogic_Info("\n", HostAdapter);
1996         } else
1997                 BusLogic_Warning("*** %s Initialized Successfully ***\n", HostAdapter, HostAdapter->FullModelName);
1998         HostAdapter->HostAdapterInitialized = true;
1999         /*
2000            Indicate the Host Adapter Initialization completed successfully.
2001          */
2002         return true;
2003 }
2004
2005
2006 /*
2007   BusLogic_TargetDeviceInquiry inquires about the Target Devices accessible
2008   through Host Adapter.
2009 */
2010
2011 static bool __init BusLogic_TargetDeviceInquiry(struct BusLogic_HostAdapter
2012                                                    *HostAdapter)
2013 {
2014         u16 InstalledDevices;
2015         u8 InstalledDevicesID0to7[8];
2016         struct BusLogic_SetupInformation SetupInformation;
2017         u8 SynchronousPeriod[BusLogic_MaxTargetDevices];
2018         unsigned char RequestedReplyLength;
2019         int TargetID;
2020         /*
2021            Wait a few seconds between the Host Adapter Hard Reset which initiates
2022            a SCSI Bus Reset and issuing any SCSI Commands.  Some SCSI devices get
2023            confused if they receive SCSI Commands too soon after a SCSI Bus Reset.
2024          */
2025         BusLogic_Delay(HostAdapter->BusSettleTime);
2026         /*
2027            FlashPoint Host Adapters do not provide for Target Device Inquiry.
2028          */
2029         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
2030                 return true;
2031         /*
2032            Inhibit the Target Device Inquiry if requested.
2033          */
2034         if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->LocalOptions.InhibitTargetInquiry)
2035                 return true;
2036         /*
2037            Issue the Inquire Target Devices command for host adapters with firmware
2038            version 4.25 or later, or the Inquire Installed Devices ID 0 to 7 command
2039            for older host adapters.  This is necessary to force Synchronous Transfer
2040            Negotiation so that the Inquire Setup Information and Inquire Synchronous
2041            Period commands will return valid data.  The Inquire Target Devices command
2042            is preferable to Inquire Installed Devices ID 0 to 7 since it only probes
2043            Logical Unit 0 of each Target Device.
2044          */
2045         if (strcmp(HostAdapter->FirmwareVersion, "4.25") >= 0) {
2046
2047                 /*
2048                  * Issue a Inquire Target Devices command.  Inquire Target Devices only
2049                  * tests Logical Unit 0 of each Target Device unlike the Inquire Installed
2050                  * Devices commands which test Logical Units 0 - 7.  Two bytes are
2051                  * returned, where byte 0 bit 0 set indicates that Target Device 0 exists,
2052                  * and so on.
2053                  */
2054
2055                 if (BusLogic_Command(HostAdapter, BusLogic_InquireTargetDevices, NULL, 0, &InstalledDevices, sizeof(InstalledDevices))
2056                     != sizeof(InstalledDevices))
2057                         return BusLogic_Failure(HostAdapter, "INQUIRE TARGET DEVICES");
2058                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2059                         HostAdapter->TargetFlags[TargetID].TargetExists = (InstalledDevices & (1 << TargetID) ? true : false);
2060         } else {
2061
2062                 /*
2063                  * Issue an Inquire Installed Devices command.  For each Target Device,
2064                  * a byte is returned where bit 0 set indicates that Logical Unit 0
2065                  * exists, bit 1 set indicates that Logical Unit 1 exists, and so on.
2066                  */
2067
2068                 if (BusLogic_Command(HostAdapter, BusLogic_InquireInstalledDevicesID0to7, NULL, 0, &InstalledDevicesID0to7, sizeof(InstalledDevicesID0to7))
2069                     != sizeof(InstalledDevicesID0to7))
2070                         return BusLogic_Failure(HostAdapter, "INQUIRE INSTALLED DEVICES ID 0 TO 7");
2071                 for (TargetID = 0; TargetID < 8; TargetID++)
2072                         HostAdapter->TargetFlags[TargetID].TargetExists = (InstalledDevicesID0to7[TargetID] != 0 ? true : false);
2073         }
2074         /*
2075            Issue the Inquire Setup Information command.
2076          */
2077         RequestedReplyLength = sizeof(SetupInformation);
2078         if (BusLogic_Command(HostAdapter, BusLogic_InquireSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &SetupInformation, sizeof(SetupInformation))
2079             != sizeof(SetupInformation))
2080                 return BusLogic_Failure(HostAdapter, "INQUIRE SETUP INFORMATION");
2081         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2082                 HostAdapter->SynchronousOffset[TargetID] = (TargetID < 8 ? SetupInformation.SynchronousValuesID0to7[TargetID].Offset : SetupInformation.SynchronousValuesID8to15[TargetID - 8].Offset);
2083         if (strcmp(HostAdapter->FirmwareVersion, "5.06L") >= 0)
2084                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2085                         HostAdapter->TargetFlags[TargetID].WideTransfersActive = (TargetID < 8 ? (SetupInformation.WideTransfersActiveID0to7 & (1 << TargetID)
2086                                                                                                   ? true : false)
2087                                                                                   : (SetupInformation.WideTransfersActiveID8to15 & (1 << (TargetID - 8))
2088                                                                                      ? true : false));
2089         /*
2090            Issue the Inquire Synchronous Period command.
2091          */
2092         if (HostAdapter->FirmwareVersion[0] >= '3') {
2093
2094                 /* Issue a Inquire Synchronous Period command.  For each Target Device,
2095                  * a byte is returned which represents the Synchronous Transfer Period
2096                  * in units of 10 nanoseconds.
2097                  */
2098
2099                 RequestedReplyLength = sizeof(SynchronousPeriod);
2100                 if (BusLogic_Command(HostAdapter, BusLogic_InquireSynchronousPeriod, &RequestedReplyLength, sizeof(RequestedReplyLength), &SynchronousPeriod, sizeof(SynchronousPeriod))
2101                     != sizeof(SynchronousPeriod))
2102                         return BusLogic_Failure(HostAdapter, "INQUIRE SYNCHRONOUS PERIOD");
2103                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2104                         HostAdapter->SynchronousPeriod[TargetID] = SynchronousPeriod[TargetID];
2105         } else
2106                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2107                         if (SetupInformation.SynchronousValuesID0to7[TargetID].Offset > 0)
2108                                 HostAdapter->SynchronousPeriod[TargetID] = 20 + 5 * SetupInformation.SynchronousValuesID0to7[TargetID]
2109                                     .TransferPeriod;
2110         /*
2111            Indicate the Target Device Inquiry completed successfully.
2112          */
2113         return true;
2114 }
2115
2116 /*
2117   BusLogic_InitializeHostStructure initializes the fields in the SCSI Host
2118   structure.  The base, io_port, n_io_ports, irq, and dma_channel fields in the
2119   SCSI Host structure are intentionally left uninitialized, as this driver
2120   handles acquisition and release of these resources explicitly, as well as
2121   ensuring exclusive access to the Host Adapter hardware and data structures
2122   through explicit acquisition and release of the Host Adapter's Lock.
2123 */
2124
2125 static void __init BusLogic_InitializeHostStructure(struct BusLogic_HostAdapter
2126                                                     *HostAdapter, struct Scsi_Host *Host)
2127 {
2128         Host->max_id = HostAdapter->MaxTargetDevices;
2129         Host->max_lun = HostAdapter->MaxLogicalUnits;
2130         Host->max_channel = 0;
2131         Host->unique_id = HostAdapter->IO_Address;
2132         Host->this_id = HostAdapter->SCSI_ID;
2133         Host->can_queue = HostAdapter->DriverQueueDepth;
2134         Host->sg_tablesize = HostAdapter->DriverScatterGatherLimit;
2135         Host->unchecked_isa_dma = HostAdapter->BounceBuffersRequired;
2136         Host->cmd_per_lun = HostAdapter->UntaggedQueueDepth;
2137 }
2138
2139 /*
2140   BusLogic_SlaveConfigure will actually set the queue depth on individual
2141   scsi devices as they are permanently added to the device chain.  We
2142   shamelessly rip off the SelectQueueDepths code to make this work mostly
2143   like it used to.  Since we don't get called once at the end of the scan
2144   but instead get called for each device, we have to do things a bit
2145   differently.
2146 */
2147 static int BusLogic_SlaveConfigure(struct scsi_device *Device)
2148 {
2149         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Device->host->hostdata;
2150         int TargetID = Device->id;
2151         int QueueDepth = HostAdapter->QueueDepth[TargetID];
2152
2153         if (HostAdapter->TargetFlags[TargetID].TaggedQueuingSupported && (HostAdapter->TaggedQueuingPermitted & (1 << TargetID))) {
2154                 if (QueueDepth == 0)
2155                         QueueDepth = BusLogic_MaxAutomaticTaggedQueueDepth;
2156                 HostAdapter->QueueDepth[TargetID] = QueueDepth;
2157                 scsi_adjust_queue_depth(Device, MSG_SIMPLE_TAG, QueueDepth);
2158         } else {
2159                 HostAdapter->TaggedQueuingPermitted &= ~(1 << TargetID);
2160                 QueueDepth = HostAdapter->UntaggedQueueDepth;
2161                 HostAdapter->QueueDepth[TargetID] = QueueDepth;
2162                 scsi_adjust_queue_depth(Device, 0, QueueDepth);
2163         }
2164         QueueDepth = 0;
2165         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2166                 if (HostAdapter->TargetFlags[TargetID].TargetExists) {
2167                         QueueDepth += HostAdapter->QueueDepth[TargetID];
2168                 }
2169         if (QueueDepth > HostAdapter->AllocatedCCBs)
2170                 BusLogic_CreateAdditionalCCBs(HostAdapter, QueueDepth - HostAdapter->AllocatedCCBs, false);
2171         return 0;
2172 }
2173
2174 /*
2175   BusLogic_DetectHostAdapter probes for BusLogic Host Adapters at the standard
2176   I/O Addresses where they may be located, initializing, registering, and
2177   reporting the configuration of each BusLogic Host Adapter it finds.  It
2178   returns the number of BusLogic Host Adapters successfully initialized and
2179   registered.
2180 */
2181
2182 static int __init BusLogic_init(void)
2183 {
2184         int BusLogicHostAdapterCount = 0, DriverOptionsIndex = 0, ProbeIndex;
2185         struct BusLogic_HostAdapter *PrototypeHostAdapter;
2186         int ret = 0;
2187
2188 #ifdef MODULE
2189         if (BusLogic)
2190                 BusLogic_Setup(BusLogic);
2191 #endif
2192
2193         if (BusLogic_ProbeOptions.NoProbe)
2194                 return -ENODEV;
2195         BusLogic_ProbeInfoList =
2196             kzalloc(BusLogic_MaxHostAdapters * sizeof(struct BusLogic_ProbeInfo), GFP_KERNEL);
2197         if (BusLogic_ProbeInfoList == NULL) {
2198                 BusLogic_Error("BusLogic: Unable to allocate Probe Info List\n", NULL);
2199                 return -ENOMEM;
2200         }
2201
2202         PrototypeHostAdapter =
2203             kzalloc(sizeof(struct BusLogic_HostAdapter), GFP_KERNEL);
2204         if (PrototypeHostAdapter == NULL) {
2205                 kfree(BusLogic_ProbeInfoList);
2206                 BusLogic_Error("BusLogic: Unable to allocate Prototype " "Host Adapter\n", NULL);
2207                 return -ENOMEM;
2208         }
2209
2210 #ifdef MODULE
2211         if (BusLogic != NULL)
2212                 BusLogic_Setup(BusLogic);
2213 #endif
2214         BusLogic_InitializeProbeInfoList(PrototypeHostAdapter);
2215         for (ProbeIndex = 0; ProbeIndex < BusLogic_ProbeInfoCount; ProbeIndex++) {
2216                 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[ProbeIndex];
2217                 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
2218                 struct Scsi_Host *Host;
2219                 if (ProbeInfo->IO_Address == 0)
2220                         continue;
2221                 memset(HostAdapter, 0, sizeof(struct BusLogic_HostAdapter));
2222                 HostAdapter->HostAdapterType = ProbeInfo->HostAdapterType;
2223                 HostAdapter->HostAdapterBusType = ProbeInfo->HostAdapterBusType;
2224                 HostAdapter->IO_Address = ProbeInfo->IO_Address;
2225                 HostAdapter->PCI_Address = ProbeInfo->PCI_Address;
2226                 HostAdapter->Bus = ProbeInfo->Bus;
2227                 HostAdapter->Device = ProbeInfo->Device;
2228                 HostAdapter->PCI_Device = ProbeInfo->PCI_Device;
2229                 HostAdapter->IRQ_Channel = ProbeInfo->IRQ_Channel;
2230                 HostAdapter->AddressCount = BusLogic_HostAdapterAddressCount[HostAdapter->HostAdapterType];
2231
2232                 /*
2233                    Make sure region is free prior to probing.
2234                  */
2235                 if (!request_region(HostAdapter->IO_Address, HostAdapter->AddressCount,
2236                                         "BusLogic"))
2237                         continue;
2238                 /*
2239                    Probe the Host Adapter.  If unsuccessful, abort further initialization.
2240                  */
2241                 if (!BusLogic_ProbeHostAdapter(HostAdapter)) {
2242                         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2243                         continue;
2244                 }
2245                 /*
2246                    Hard Reset the Host Adapter.  If unsuccessful, abort further
2247                    initialization.
2248                  */
2249                 if (!BusLogic_HardwareResetHostAdapter(HostAdapter, true)) {
2250                         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2251                         continue;
2252                 }
2253                 /*
2254                    Check the Host Adapter.  If unsuccessful, abort further initialization.
2255                  */
2256                 if (!BusLogic_CheckHostAdapter(HostAdapter)) {
2257                         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2258                         continue;
2259                 }
2260                 /*
2261                    Initialize the Driver Options field if provided.
2262                  */
2263                 if (DriverOptionsIndex < BusLogic_DriverOptionsCount)
2264                         HostAdapter->DriverOptions = &BusLogic_DriverOptions[DriverOptionsIndex++];
2265                 /*
2266                    Announce the Driver Version and Date, Author's Name, Copyright Notice,
2267                    and Electronic Mail Address.
2268                  */
2269                 BusLogic_AnnounceDriver(HostAdapter);
2270                 /*
2271                    Register the SCSI Host structure.
2272                  */
2273
2274                 Host = scsi_host_alloc(&Bus_Logic_template, sizeof(struct BusLogic_HostAdapter));
2275                 if (Host == NULL) {
2276                         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2277                         continue;
2278                 }
2279                 HostAdapter = (struct BusLogic_HostAdapter *) Host->hostdata;
2280                 memcpy(HostAdapter, PrototypeHostAdapter, sizeof(struct BusLogic_HostAdapter));
2281                 HostAdapter->SCSI_Host = Host;
2282                 HostAdapter->HostNumber = Host->host_no;
2283                 /*
2284                    Add Host Adapter to the end of the list of registered BusLogic
2285                    Host Adapters.
2286                  */
2287                 list_add_tail(&HostAdapter->host_list, &BusLogic_host_list);
2288
2289                 /*
2290                    Read the Host Adapter Configuration, Configure the Host Adapter,
2291                    Acquire the System Resources necessary to use the Host Adapter, then
2292                    Create the Initial CCBs, Initialize the Host Adapter, and finally
2293                    perform Target Device Inquiry.
2294
2295                    From this point onward, any failure will be assumed to be due to a
2296                    problem with the Host Adapter, rather than due to having mistakenly
2297                    identified this port as belonging to a BusLogic Host Adapter.  The
2298                    I/O Address range will not be released, thereby preventing it from
2299                    being incorrectly identified as any other type of Host Adapter.
2300                  */
2301                 if (BusLogic_ReadHostAdapterConfiguration(HostAdapter) &&
2302                     BusLogic_ReportHostAdapterConfiguration(HostAdapter) &&
2303                     BusLogic_AcquireResources(HostAdapter) &&
2304                     BusLogic_CreateInitialCCBs(HostAdapter) &&
2305                     BusLogic_InitializeHostAdapter(HostAdapter) &&
2306                     BusLogic_TargetDeviceInquiry(HostAdapter)) {
2307                         /*
2308                            Initialization has been completed successfully.  Release and
2309                            re-register usage of the I/O Address range so that the Model
2310                            Name of the Host Adapter will appear, and initialize the SCSI
2311                            Host structure.
2312                          */
2313                         release_region(HostAdapter->IO_Address,
2314                                        HostAdapter->AddressCount);
2315                         if (!request_region(HostAdapter->IO_Address,
2316                                             HostAdapter->AddressCount,
2317                                             HostAdapter->FullModelName)) {
2318                                 printk(KERN_WARNING
2319                                         "BusLogic: Release and re-register of "
2320                                         "port 0x%04lx failed \n",
2321                                         (unsigned long)HostAdapter->IO_Address);
2322                                 BusLogic_DestroyCCBs(HostAdapter);
2323                                 BusLogic_ReleaseResources(HostAdapter);
2324                                 list_del(&HostAdapter->host_list);
2325                                 scsi_host_put(Host);
2326                                 ret = -ENOMEM;
2327                         } else {
2328                                 BusLogic_InitializeHostStructure(HostAdapter,
2329                                                                  Host);
2330                                 if (scsi_add_host(Host, HostAdapter->PCI_Device
2331                                                 ? &HostAdapter->PCI_Device->dev
2332                                                   : NULL)) {
2333                                         printk(KERN_WARNING
2334                                                "BusLogic: scsi_add_host()"
2335                                                "failed!\n");
2336                                         BusLogic_DestroyCCBs(HostAdapter);
2337                                         BusLogic_ReleaseResources(HostAdapter);
2338                                         list_del(&HostAdapter->host_list);
2339                                         scsi_host_put(Host);
2340                                         ret = -ENODEV;
2341                                 } else {
2342                                         scsi_scan_host(Host);
2343                                         BusLogicHostAdapterCount++;
2344                                 }
2345                         }
2346                 } else {
2347                         /*
2348                            An error occurred during Host Adapter Configuration Querying, Host
2349                            Adapter Configuration, Resource Acquisition, CCB Creation, Host
2350                            Adapter Initialization, or Target Device Inquiry, so remove Host
2351                            Adapter from the list of registered BusLogic Host Adapters, destroy
2352                            the CCBs, Release the System Resources, and Unregister the SCSI
2353                            Host.
2354                          */
2355                         BusLogic_DestroyCCBs(HostAdapter);
2356                         BusLogic_ReleaseResources(HostAdapter);
2357                         list_del(&HostAdapter->host_list);
2358                         scsi_host_put(Host);
2359                         ret = -ENODEV;
2360                 }
2361         }
2362         kfree(PrototypeHostAdapter);
2363         kfree(BusLogic_ProbeInfoList);
2364         BusLogic_ProbeInfoList = NULL;
2365         return ret;
2366 }
2367
2368
2369 /*
2370   BusLogic_ReleaseHostAdapter releases all resources previously acquired to
2371   support a specific Host Adapter, including the I/O Address range, and
2372   unregisters the BusLogic Host Adapter.
2373 */
2374
2375 static int __exit BusLogic_ReleaseHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
2376 {
2377         struct Scsi_Host *Host = HostAdapter->SCSI_Host;
2378
2379         scsi_remove_host(Host);
2380
2381         /*
2382            FlashPoint Host Adapters must first be released by the FlashPoint
2383            SCCB Manager.
2384          */
2385         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
2386                 FlashPoint_ReleaseHostAdapter(HostAdapter->CardHandle);
2387         /*
2388            Destroy the CCBs and release any system resources acquired to
2389            support Host Adapter.
2390          */
2391         BusLogic_DestroyCCBs(HostAdapter);
2392         BusLogic_ReleaseResources(HostAdapter);
2393         /*
2394            Release usage of the I/O Address range.
2395          */
2396         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2397         /*
2398            Remove Host Adapter from the list of registered BusLogic Host Adapters.
2399          */
2400         list_del(&HostAdapter->host_list);
2401
2402         scsi_host_put(Host);
2403         return 0;
2404 }
2405
2406
2407 /*
2408   BusLogic_QueueCompletedCCB queues CCB for completion processing.
2409 */
2410
2411 static void BusLogic_QueueCompletedCCB(struct BusLogic_CCB *CCB)
2412 {
2413         struct BusLogic_HostAdapter *HostAdapter = CCB->HostAdapter;
2414         CCB->Status = BusLogic_CCB_Completed;
2415         CCB->Next = NULL;
2416         if (HostAdapter->FirstCompletedCCB == NULL) {
2417                 HostAdapter->FirstCompletedCCB = CCB;
2418                 HostAdapter->LastCompletedCCB = CCB;
2419         } else {
2420                 HostAdapter->LastCompletedCCB->Next = CCB;
2421                 HostAdapter->LastCompletedCCB = CCB;
2422         }
2423         HostAdapter->ActiveCommands[CCB->TargetID]--;
2424 }
2425
2426
2427 /*
2428   BusLogic_ComputeResultCode computes a SCSI Subsystem Result Code from
2429   the Host Adapter Status and Target Device Status.
2430 */
2431
2432 static int BusLogic_ComputeResultCode(struct BusLogic_HostAdapter *HostAdapter, enum BusLogic_HostAdapterStatus HostAdapterStatus, enum BusLogic_TargetDeviceStatus TargetDeviceStatus)
2433 {
2434         int HostStatus;
2435         switch (HostAdapterStatus) {
2436         case BusLogic_CommandCompletedNormally:
2437         case BusLogic_LinkedCommandCompleted:
2438         case BusLogic_LinkedCommandCompletedWithFlag:
2439                 HostStatus = DID_OK;
2440                 break;
2441         case BusLogic_SCSISelectionTimeout:
2442                 HostStatus = DID_TIME_OUT;
2443                 break;
2444         case BusLogic_InvalidOutgoingMailboxActionCode:
2445         case BusLogic_InvalidCommandOperationCode:
2446         case BusLogic_InvalidCommandParameter:
2447                 BusLogic_Warning("BusLogic Driver Protocol Error 0x%02X\n", HostAdapter, HostAdapterStatus);
2448         case BusLogic_DataUnderRun:
2449         case BusLogic_DataOverRun:
2450         case BusLogic_UnexpectedBusFree:
2451         case BusLogic_LinkedCCBhasInvalidLUN:
2452         case BusLogic_AutoRequestSenseFailed:
2453         case BusLogic_TaggedQueuingMessageRejected:
2454         case BusLogic_UnsupportedMessageReceived:
2455         case BusLogic_HostAdapterHardwareFailed:
2456         case BusLogic_TargetDeviceReconnectedImproperly:
2457         case BusLogic_AbortQueueGenerated:
2458         case BusLogic_HostAdapterSoftwareError:
2459         case BusLogic_HostAdapterHardwareTimeoutError:
2460         case BusLogic_SCSIParityErrorDetected:
2461                 HostStatus = DID_ERROR;
2462                 break;
2463         case BusLogic_InvalidBusPhaseRequested:
2464         case BusLogic_TargetFailedResponseToATN:
2465         case BusLogic_HostAdapterAssertedRST:
2466         case BusLogic_OtherDeviceAssertedRST:
2467         case BusLogic_HostAdapterAssertedBusDeviceReset:
2468                 HostStatus = DID_RESET;
2469                 break;
2470         default:
2471                 BusLogic_Warning("Unknown Host Adapter Status 0x%02X\n", HostAdapter, HostAdapterStatus);
2472                 HostStatus = DID_ERROR;
2473                 break;
2474         }
2475         return (HostStatus << 16) | TargetDeviceStatus;
2476 }
2477
2478
2479 /*
2480   BusLogic_ScanIncomingMailboxes scans the Incoming Mailboxes saving any
2481   Incoming Mailbox entries for completion processing.
2482 */
2483
2484 static void BusLogic_ScanIncomingMailboxes(struct BusLogic_HostAdapter *HostAdapter)
2485 {
2486         /*
2487            Scan through the Incoming Mailboxes in Strict Round Robin fashion, saving
2488            any completed CCBs for further processing.  It is essential that for each
2489            CCB and SCSI Command issued, command completion processing is performed
2490            exactly once.  Therefore, only Incoming Mailboxes with completion code
2491            Command Completed Without Error, Command Completed With Error, or Command
2492            Aborted At Host Request are saved for completion processing.  When an
2493            Incoming Mailbox has a completion code of Aborted Command Not Found, the
2494            CCB had already completed or been aborted before the current Abort request
2495            was processed, and so completion processing has already occurred and no
2496            further action should be taken.
2497          */
2498         struct BusLogic_IncomingMailbox *NextIncomingMailbox = HostAdapter->NextIncomingMailbox;
2499         enum BusLogic_CompletionCode CompletionCode;
2500         while ((CompletionCode = NextIncomingMailbox->CompletionCode) != BusLogic_IncomingMailboxFree) {
2501                 /*
2502                    We are only allowed to do this because we limit our architectures we
2503                    run on to machines where bus_to_virt() actually works.  There *needs*
2504                    to be a dma_addr_to_virt() in the new PCI DMA mapping interface to
2505                    replace bus_to_virt() or else this code is going to become very
2506                    innefficient.
2507                  */
2508                 struct BusLogic_CCB *CCB = (struct BusLogic_CCB *) Bus_to_Virtual(NextIncomingMailbox->CCB);
2509                 if (CompletionCode != BusLogic_AbortedCommandNotFound) {
2510                         if (CCB->Status == BusLogic_CCB_Active || CCB->Status == BusLogic_CCB_Reset) {
2511                                 /*
2512                                    Save the Completion Code for this CCB and queue the CCB
2513                                    for completion processing.
2514                                  */
2515                                 CCB->CompletionCode = CompletionCode;
2516                                 BusLogic_QueueCompletedCCB(CCB);
2517                         } else {
2518                                 /*
2519                                    If a CCB ever appears in an Incoming Mailbox and is not marked
2520                                    as status Active or Reset, then there is most likely a bug in
2521                                    the Host Adapter firmware.
2522                                  */
2523                                 BusLogic_Warning("Illegal CCB #%ld status %d in " "Incoming Mailbox\n", HostAdapter, CCB->SerialNumber, CCB->Status);
2524                         }
2525                 }
2526                 NextIncomingMailbox->CompletionCode = BusLogic_IncomingMailboxFree;
2527                 if (++NextIncomingMailbox > HostAdapter->LastIncomingMailbox)
2528                         NextIncomingMailbox = HostAdapter->FirstIncomingMailbox;
2529         }
2530         HostAdapter->NextIncomingMailbox = NextIncomingMailbox;
2531 }
2532
2533
2534 /*
2535   BusLogic_ProcessCompletedCCBs iterates over the completed CCBs for Host
2536   Adapter setting the SCSI Command Result Codes, deallocating the CCBs, and
2537   calling the SCSI Subsystem Completion Routines.  The Host Adapter's Lock
2538   should already have been acquired by the caller.
2539 */
2540
2541 static void BusLogic_ProcessCompletedCCBs(struct BusLogic_HostAdapter *HostAdapter)
2542 {
2543         if (HostAdapter->ProcessCompletedCCBsActive)
2544                 return;
2545         HostAdapter->ProcessCompletedCCBsActive = true;
2546         while (HostAdapter->FirstCompletedCCB != NULL) {
2547                 struct BusLogic_CCB *CCB = HostAdapter->FirstCompletedCCB;
2548                 struct scsi_cmnd *Command = CCB->Command;
2549                 HostAdapter->FirstCompletedCCB = CCB->Next;
2550                 if (HostAdapter->FirstCompletedCCB == NULL)
2551                         HostAdapter->LastCompletedCCB = NULL;
2552                 /*
2553                    Process the Completed CCB.
2554                  */
2555                 if (CCB->Opcode == BusLogic_BusDeviceReset) {
2556                         int TargetID = CCB->TargetID;
2557                         BusLogic_Warning("Bus Device Reset CCB #%ld to Target " "%d Completed\n", HostAdapter, CCB->SerialNumber, TargetID);
2558                         BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].BusDeviceResetsCompleted);
2559                         HostAdapter->TargetFlags[TargetID].TaggedQueuingActive = false;
2560                         HostAdapter->CommandsSinceReset[TargetID] = 0;
2561                         HostAdapter->LastResetCompleted[TargetID] = jiffies;
2562                         /*
2563                            Place CCB back on the Host Adapter's free list.
2564                          */
2565                         BusLogic_DeallocateCCB(CCB);
2566 #if 0                           /* this needs to be redone different for new EH */
2567                         /*
2568                            Bus Device Reset CCBs have the Command field non-NULL only when a
2569                            Bus Device Reset was requested for a Command that did not have a
2570                            currently active CCB in the Host Adapter (i.e., a Synchronous
2571                            Bus Device Reset), and hence would not have its Completion Routine
2572                            called otherwise.
2573                          */
2574                         while (Command != NULL) {
2575                                 struct scsi_cmnd *NextCommand = Command->reset_chain;
2576                                 Command->reset_chain = NULL;
2577                                 Command->result = DID_RESET << 16;
2578                                 Command->scsi_done(Command);
2579                                 Command = NextCommand;
2580                         }
2581 #endif
2582                         /*
2583                            Iterate over the CCBs for this Host Adapter performing completion
2584                            processing for any CCBs marked as Reset for this Target.
2585                          */
2586                         for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
2587                                 if (CCB->Status == BusLogic_CCB_Reset && CCB->TargetID == TargetID) {
2588                                         Command = CCB->Command;
2589                                         BusLogic_DeallocateCCB(CCB);
2590                                         HostAdapter->ActiveCommands[TargetID]--;
2591                                         Command->result = DID_RESET << 16;
2592                                         Command->scsi_done(Command);
2593                                 }
2594                         HostAdapter->BusDeviceResetPendingCCB[TargetID] = NULL;
2595                 } else {
2596                         /*
2597                            Translate the Completion Code, Host Adapter Status, and Target
2598                            Device Status into a SCSI Subsystem Result Code.
2599                          */
2600                         switch (CCB->CompletionCode) {
2601                         case BusLogic_IncomingMailboxFree:
2602                         case BusLogic_AbortedCommandNotFound:
2603                         case BusLogic_InvalidCCB:
2604                                 BusLogic_Warning("CCB #%ld to Target %d Impossible State\n", HostAdapter, CCB->SerialNumber, CCB->TargetID);
2605                                 break;
2606                         case BusLogic_CommandCompletedWithoutError:
2607                                 HostAdapter->TargetStatistics[CCB->TargetID]
2608                                     .CommandsCompleted++;
2609                                 HostAdapter->TargetFlags[CCB->TargetID]
2610                                     .CommandSuccessfulFlag = true;
2611                                 Command->result = DID_OK << 16;
2612                                 break;
2613                         case BusLogic_CommandAbortedAtHostRequest:
2614                                 BusLogic_Warning("CCB #%ld to Target %d Aborted\n", HostAdapter, CCB->SerialNumber, CCB->TargetID);
2615                                 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[CCB->TargetID]
2616                                                                .CommandAbortsCompleted);
2617                                 Command->result = DID_ABORT << 16;
2618                                 break;
2619                         case BusLogic_CommandCompletedWithError:
2620                                 Command->result = BusLogic_ComputeResultCode(HostAdapter, CCB->HostAdapterStatus, CCB->TargetDeviceStatus);
2621                                 if (CCB->HostAdapterStatus != BusLogic_SCSISelectionTimeout) {
2622                                         HostAdapter->TargetStatistics[CCB->TargetID]
2623                                             .CommandsCompleted++;
2624                                         if (BusLogic_GlobalOptions.TraceErrors) {
2625                                                 int i;
2626                                                 BusLogic_Notice("CCB #%ld Target %d: Result %X Host "
2627                                                                 "Adapter Status %02X " "Target Status %02X\n", HostAdapter, CCB->SerialNumber, CCB->TargetID, Command->result, CCB->HostAdapterStatus, CCB->TargetDeviceStatus);
2628                                                 BusLogic_Notice("CDB   ", HostAdapter);
2629                                                 for (i = 0; i < CCB->CDB_Length; i++)
2630                                                         BusLogic_Notice(" %02X", HostAdapter, CCB->CDB[i]);
2631                                                 BusLogic_Notice("\n", HostAdapter);
2632                                                 BusLogic_Notice("Sense ", HostAdapter);
2633                                                 for (i = 0; i < CCB->SenseDataLength; i++)
2634                                                         BusLogic_Notice(" %02X", HostAdapter, Command->sense_buffer[i]);
2635                                                 BusLogic_Notice("\n", HostAdapter);
2636                                         }
2637                                 }
2638                                 break;
2639                         }
2640                         /*
2641                            When an INQUIRY command completes normally, save the
2642                            CmdQue (Tagged Queuing Supported) and WBus16 (16 Bit
2643                            Wide Data Transfers Supported) bits.
2644                          */
2645                         if (CCB->CDB[0] == INQUIRY && CCB->CDB[1] == 0 && CCB->HostAdapterStatus == BusLogic_CommandCompletedNormally) {
2646                                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[CCB->TargetID];
2647                                 struct SCSI_Inquiry *InquiryResult =
2648                                         (struct SCSI_Inquiry *) scsi_sglist(Command);
2649                                 TargetFlags->TargetExists = true;
2650                                 TargetFlags->TaggedQueuingSupported = InquiryResult->CmdQue;
2651                                 TargetFlags->WideTransfersSupported = InquiryResult->WBus16;
2652                         }
2653                         /*
2654                            Place CCB back on the Host Adapter's free list.
2655                          */
2656                         BusLogic_DeallocateCCB(CCB);
2657                         /*
2658                            Call the SCSI Command Completion Routine.
2659                          */
2660                         Command->scsi_done(Command);
2661                 }
2662         }
2663         HostAdapter->ProcessCompletedCCBsActive = false;
2664 }
2665
2666
2667 /*
2668   BusLogic_InterruptHandler handles hardware interrupts from BusLogic Host
2669   Adapters.
2670 */
2671
2672 static irqreturn_t BusLogic_InterruptHandler(int IRQ_Channel, void *DeviceIdentifier)
2673 {
2674         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) DeviceIdentifier;
2675         unsigned long ProcessorFlags;
2676         /*
2677            Acquire exclusive access to Host Adapter.
2678          */
2679         spin_lock_irqsave(HostAdapter->SCSI_Host->host_lock, ProcessorFlags);
2680         /*
2681            Handle Interrupts appropriately for each Host Adapter type.
2682          */
2683         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
2684                 union BusLogic_InterruptRegister InterruptRegister;
2685                 /*
2686                    Read the Host Adapter Interrupt Register.
2687                  */
2688                 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
2689                 if (InterruptRegister.ir.InterruptValid) {
2690                         /*
2691                            Acknowledge the interrupt and reset the Host Adapter
2692                            Interrupt Register.
2693                          */
2694                         BusLogic_InterruptReset(HostAdapter);
2695                         /*
2696                            Process valid External SCSI Bus Reset and Incoming Mailbox
2697                            Loaded Interrupts.  Command Complete Interrupts are noted,
2698                            and Outgoing Mailbox Available Interrupts are ignored, as
2699                            they are never enabled.
2700                          */
2701                         if (InterruptRegister.ir.ExternalBusReset)
2702                                 HostAdapter->HostAdapterExternalReset = true;
2703                         else if (InterruptRegister.ir.IncomingMailboxLoaded)
2704                                 BusLogic_ScanIncomingMailboxes(HostAdapter);
2705                         else if (InterruptRegister.ir.CommandComplete)
2706                                 HostAdapter->HostAdapterCommandCompleted = true;
2707                 }
2708         } else {
2709                 /*
2710                    Check if there is a pending interrupt for this Host Adapter.
2711                  */
2712                 if (FlashPoint_InterruptPending(HostAdapter->CardHandle))
2713                         switch (FlashPoint_HandleInterrupt(HostAdapter->CardHandle)) {
2714                         case FlashPoint_NormalInterrupt:
2715                                 break;
2716                         case FlashPoint_ExternalBusReset:
2717                                 HostAdapter->HostAdapterExternalReset = true;
2718                                 break;
2719                         case FlashPoint_InternalError:
2720                                 BusLogic_Warning("Internal FlashPoint Error detected" " - Resetting Host Adapter\n", HostAdapter);
2721                                 HostAdapter->HostAdapterInternalError = true;
2722                                 break;
2723                         }
2724         }
2725         /*
2726            Process any completed CCBs.
2727          */
2728         if (HostAdapter->FirstCompletedCCB != NULL)
2729                 BusLogic_ProcessCompletedCCBs(HostAdapter);
2730         /*
2731            Reset the Host Adapter if requested.
2732          */
2733         if (HostAdapter->HostAdapterExternalReset) {
2734                 BusLogic_Warning("Resetting %s due to External SCSI Bus Reset\n", HostAdapter, HostAdapter->FullModelName);
2735                 BusLogic_IncrementErrorCounter(&HostAdapter->ExternalHostAdapterResets);
2736                 BusLogic_ResetHostAdapter(HostAdapter, false);
2737                 HostAdapter->HostAdapterExternalReset = false;
2738         } else if (HostAdapter->HostAdapterInternalError) {
2739                 BusLogic_Warning("Resetting %s due to Host Adapter Internal Error\n", HostAdapter, HostAdapter->FullModelName);
2740                 BusLogic_IncrementErrorCounter(&HostAdapter->HostAdapterInternalErrors);
2741                 BusLogic_ResetHostAdapter(HostAdapter, true);
2742                 HostAdapter->HostAdapterInternalError = false;
2743         }
2744         /*
2745            Release exclusive access to Host Adapter.
2746          */
2747         spin_unlock_irqrestore(HostAdapter->SCSI_Host->host_lock, ProcessorFlags);
2748         return IRQ_HANDLED;
2749 }
2750
2751
2752 /*
2753   BusLogic_WriteOutgoingMailbox places CCB and Action Code into an Outgoing
2754   Mailbox for execution by Host Adapter.  The Host Adapter's Lock should
2755   already have been acquired by the caller.
2756 */
2757
2758 static bool BusLogic_WriteOutgoingMailbox(struct BusLogic_HostAdapter
2759                                              *HostAdapter, enum BusLogic_ActionCode ActionCode, struct BusLogic_CCB *CCB)
2760 {
2761         struct BusLogic_OutgoingMailbox *NextOutgoingMailbox;
2762         NextOutgoingMailbox = HostAdapter->NextOutgoingMailbox;
2763         if (NextOutgoingMailbox->ActionCode == BusLogic_OutgoingMailboxFree) {
2764                 CCB->Status = BusLogic_CCB_Active;
2765                 /*
2766                    The CCB field must be written before the Action Code field since
2767                    the Host Adapter is operating asynchronously and the locking code
2768                    does not protect against simultaneous access by the Host Adapter.
2769                  */
2770                 NextOutgoingMailbox->CCB = CCB->DMA_Handle;
2771                 NextOutgoingMailbox->ActionCode = ActionCode;
2772                 BusLogic_StartMailboxCommand(HostAdapter);
2773                 if (++NextOutgoingMailbox > HostAdapter->LastOutgoingMailbox)
2774                         NextOutgoingMailbox = HostAdapter->FirstOutgoingMailbox;
2775                 HostAdapter->NextOutgoingMailbox = NextOutgoingMailbox;
2776                 if (ActionCode == BusLogic_MailboxStartCommand) {
2777                         HostAdapter->ActiveCommands[CCB->TargetID]++;
2778                         if (CCB->Opcode != BusLogic_BusDeviceReset)
2779                                 HostAdapter->TargetStatistics[CCB->TargetID].CommandsAttempted++;
2780                 }
2781                 return true;
2782         }
2783         return false;
2784 }
2785
2786 /* Error Handling (EH) support */
2787
2788 static int BusLogic_host_reset(struct scsi_cmnd * SCpnt)
2789 {
2790         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) SCpnt->device->host->hostdata;
2791
2792         unsigned int id = SCpnt->device->id;
2793         struct BusLogic_TargetStatistics *stats = &HostAdapter->TargetStatistics[id];
2794         int rc;
2795
2796         spin_lock_irq(SCpnt->device->host->host_lock);
2797
2798         BusLogic_IncrementErrorCounter(&stats->HostAdapterResetsRequested);
2799
2800         rc = BusLogic_ResetHostAdapter(HostAdapter, false);
2801         spin_unlock_irq(SCpnt->device->host->host_lock);
2802         return rc;
2803 }
2804
2805 /*
2806   BusLogic_QueueCommand creates a CCB for Command and places it into an
2807   Outgoing Mailbox for execution by the associated Host Adapter.
2808 */
2809
2810 static int BusLogic_QueueCommand_lck(struct scsi_cmnd *Command, void (*CompletionRoutine) (struct scsi_cmnd *))
2811 {
2812         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Command->device->host->hostdata;
2813         struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[Command->device->id];
2814         struct BusLogic_TargetStatistics *TargetStatistics = HostAdapter->TargetStatistics;
2815         unsigned char *CDB = Command->cmnd;
2816         int CDB_Length = Command->cmd_len;
2817         int TargetID = Command->device->id;
2818         int LogicalUnit = Command->device->lun;
2819         int BufferLength = scsi_bufflen(Command);
2820         int Count;
2821         struct BusLogic_CCB *CCB;
2822         /*
2823            SCSI REQUEST_SENSE commands will be executed automatically by the Host
2824            Adapter for any errors, so they should not be executed explicitly unless
2825            the Sense Data is zero indicating that no error occurred.
2826          */
2827         if (CDB[0] == REQUEST_SENSE && Command->sense_buffer[0] != 0) {
2828                 Command->result = DID_OK << 16;
2829                 CompletionRoutine(Command);
2830                 return 0;
2831         }
2832         /*
2833            Allocate a CCB from the Host Adapter's free list.  In the unlikely event
2834            that there are none available and memory allocation fails, wait 1 second
2835            and try again.  If that fails, the Host Adapter is probably hung so signal
2836            an error as a Host Adapter Hard Reset should be initiated soon.
2837          */
2838         CCB = BusLogic_AllocateCCB(HostAdapter);
2839         if (CCB == NULL) {
2840                 spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
2841                 BusLogic_Delay(1);
2842                 spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
2843                 CCB = BusLogic_AllocateCCB(HostAdapter);
2844                 if (CCB == NULL) {
2845                         Command->result = DID_ERROR << 16;
2846                         CompletionRoutine(Command);
2847                         return 0;
2848                 }
2849         }
2850
2851         /*
2852            Initialize the fields in the BusLogic Command Control Block (CCB).
2853          */
2854         Count = scsi_dma_map(Command);
2855         BUG_ON(Count < 0);
2856         if (Count) {
2857                 struct scatterlist *sg;
2858                 int i;
2859
2860                 CCB->Opcode = BusLogic_InitiatorCCB_ScatterGather;
2861                 CCB->DataLength = Count * sizeof(struct BusLogic_ScatterGatherSegment);
2862                 if (BusLogic_MultiMasterHostAdapterP(HostAdapter))
2863                         CCB->DataPointer = (unsigned int) CCB->DMA_Handle + ((unsigned long) &CCB->ScatterGatherList - (unsigned long) CCB);
2864                 else
2865                         CCB->DataPointer = Virtual_to_32Bit_Virtual(CCB->ScatterGatherList);
2866
2867                 scsi_for_each_sg(Command, sg, Count, i) {
2868                         CCB->ScatterGatherList[i].SegmentByteCount =
2869                                 sg_dma_len(sg);
2870                         CCB->ScatterGatherList[i].SegmentDataPointer =
2871                                 sg_dma_address(sg);
2872                 }
2873         } else if (!Count) {
2874                 CCB->Opcode = BusLogic_InitiatorCCB;
2875                 CCB->DataLength = BufferLength;
2876                 CCB->DataPointer = 0;
2877         }
2878
2879         switch (CDB[0]) {
2880         case READ_6:
2881         case READ_10:
2882                 CCB->DataDirection = BusLogic_DataInLengthChecked;
2883                 TargetStatistics[TargetID].ReadCommands++;
2884                 BusLogic_IncrementByteCounter(&TargetStatistics[TargetID].TotalBytesRead, BufferLength);
2885                 BusLogic_IncrementSizeBucket(TargetStatistics[TargetID].ReadCommandSizeBuckets, BufferLength);
2886                 break;
2887         case WRITE_6:
2888         case WRITE_10:
2889                 CCB->DataDirection = BusLogic_DataOutLengthChecked;
2890                 TargetStatistics[TargetID].WriteCommands++;
2891                 BusLogic_IncrementByteCounter(&TargetStatistics[TargetID].TotalBytesWritten, BufferLength);
2892                 BusLogic_IncrementSizeBucket(TargetStatistics[TargetID].WriteCommandSizeBuckets, BufferLength);
2893                 break;
2894         default:
2895                 CCB->DataDirection = BusLogic_UncheckedDataTransfer;
2896                 break;
2897         }
2898         CCB->CDB_Length = CDB_Length;
2899         CCB->HostAdapterStatus = 0;
2900         CCB->TargetDeviceStatus = 0;
2901         CCB->TargetID = TargetID;
2902         CCB->LogicalUnit = LogicalUnit;
2903         CCB->TagEnable = false;
2904         CCB->LegacyTagEnable = false;
2905         /*
2906            BusLogic recommends that after a Reset the first couple of commands that
2907            are sent to a Target Device be sent in a non Tagged Queue fashion so that
2908            the Host Adapter and Target Device can establish Synchronous and Wide
2909            Transfer before Queue Tag messages can interfere with the Synchronous and
2910            Wide Negotiation messages.  By waiting to enable Tagged Queuing until after
2911            the first BusLogic_MaxTaggedQueueDepth commands have been queued, it is
2912            assured that after a Reset any pending commands are requeued before Tagged
2913            Queuing is enabled and that the Tagged Queuing message will not occur while
2914            the partition table is being printed.  In addition, some devices do not
2915            properly handle the transition from non-tagged to tagged commands, so it is
2916            necessary to wait until there are no pending commands for a target device
2917            before queuing tagged commands.
2918          */
2919         if (HostAdapter->CommandsSinceReset[TargetID]++ >=
2920             BusLogic_MaxTaggedQueueDepth && !TargetFlags->TaggedQueuingActive && HostAdapter->ActiveCommands[TargetID] == 0 && TargetFlags->TaggedQueuingSupported && (HostAdapter->TaggedQueuingPermitted & (1 << TargetID))) {
2921                 TargetFlags->TaggedQueuingActive = true;
2922                 BusLogic_Notice("Tagged Queuing now active for Target %d\n", HostAdapter, TargetID);
2923         }
2924         if (TargetFlags->TaggedQueuingActive) {
2925                 enum BusLogic_QueueTag QueueTag = BusLogic_SimpleQueueTag;
2926                 /*
2927                    When using Tagged Queuing with Simple Queue Tags, it appears that disk
2928                    drive controllers do not guarantee that a queued command will not
2929                    remain in a disconnected state indefinitely if commands that read or
2930                    write nearer the head position continue to arrive without interruption.
2931                    Therefore, for each Target Device this driver keeps track of the last
2932                    time either the queue was empty or an Ordered Queue Tag was issued.  If
2933                    more than 4 seconds (one fifth of the 20 second disk timeout) have
2934                    elapsed since this last sequence point, this command will be issued
2935                    with an Ordered Queue Tag rather than a Simple Queue Tag, which forces
2936                    the Target Device to complete all previously queued commands before
2937                    this command may be executed.
2938                  */
2939                 if (HostAdapter->ActiveCommands[TargetID] == 0)
2940                         HostAdapter->LastSequencePoint[TargetID] = jiffies;
2941                 else if (time_after(jiffies, HostAdapter->LastSequencePoint[TargetID] + 4 * HZ)) {
2942                         HostAdapter->LastSequencePoint[TargetID] = jiffies;
2943                         QueueTag = BusLogic_OrderedQueueTag;
2944                 }
2945                 if (HostAdapter->ExtendedLUNSupport) {
2946                         CCB->TagEnable = true;
2947                         CCB->QueueTag = QueueTag;
2948                 } else {
2949                         CCB->LegacyTagEnable = true;
2950                         CCB->LegacyQueueTag = QueueTag;
2951                 }
2952         }
2953         memcpy(CCB->CDB, CDB, CDB_Length);
2954         CCB->SenseDataLength = SCSI_SENSE_BUFFERSIZE;
2955         CCB->SenseDataPointer = pci_map_single(HostAdapter->PCI_Device, Command->sense_buffer, CCB->SenseDataLength, PCI_DMA_FROMDEVICE);
2956         CCB->Command = Command;
2957         Command->scsi_done = CompletionRoutine;
2958         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
2959                 /*
2960                    Place the CCB in an Outgoing Mailbox.  The higher levels of the SCSI
2961                    Subsystem should not attempt to queue more commands than can be placed
2962                    in Outgoing Mailboxes, so there should always be one free.  In the
2963                    unlikely event that there are none available, wait 1 second and try
2964                    again.  If that fails, the Host Adapter is probably hung so signal an
2965                    error as a Host Adapter Hard Reset should be initiated soon.
2966                  */
2967                 if (!BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxStartCommand, CCB)) {
2968                         spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
2969                         BusLogic_Warning("Unable to write Outgoing Mailbox - " "Pausing for 1 second\n", HostAdapter);
2970                         BusLogic_Delay(1);
2971                         spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
2972                         if (!BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxStartCommand, CCB)) {
2973                                 BusLogic_Warning("Still unable to write Outgoing Mailbox - " "Host Adapter Dead?\n", HostAdapter);
2974                                 BusLogic_DeallocateCCB(CCB);
2975                                 Command->result = DID_ERROR << 16;
2976                                 Command->scsi_done(Command);
2977                         }
2978                 }
2979         } else {
2980                 /*
2981                    Call the FlashPoint SCCB Manager to start execution of the CCB.
2982                  */
2983                 CCB->Status = BusLogic_CCB_Active;
2984                 HostAdapter->ActiveCommands[TargetID]++;
2985                 TargetStatistics[TargetID].CommandsAttempted++;
2986                 FlashPoint_StartCCB(HostAdapter->CardHandle, CCB);
2987                 /*
2988                    The Command may have already completed and BusLogic_QueueCompletedCCB
2989                    been called, or it may still be pending.
2990                  */
2991                 if (CCB->Status == BusLogic_CCB_Completed)
2992                         BusLogic_ProcessCompletedCCBs(HostAdapter);
2993         }
2994         return 0;
2995 }
2996
2997 static DEF_SCSI_QCMD(BusLogic_QueueCommand)
2998
2999 #if 0
3000 /*
3001   BusLogic_AbortCommand aborts Command if possible.
3002 */
3003
3004 static int BusLogic_AbortCommand(struct scsi_cmnd *Command)
3005 {
3006         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Command->device->host->hostdata;
3007
3008         int TargetID = Command->device->id;
3009         struct BusLogic_CCB *CCB;
3010         BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsRequested);
3011         /*
3012            Attempt to find an Active CCB for this Command.  If no Active CCB for this
3013            Command is found, then no Abort is necessary.
3014          */
3015         for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
3016                 if (CCB->Command == Command)
3017                         break;
3018         if (CCB == NULL) {
3019                 BusLogic_Warning("Unable to Abort Command to Target %d - " "No CCB Found\n", HostAdapter, TargetID);
3020                 return SUCCESS;
3021         } else if (CCB->Status == BusLogic_CCB_Completed) {
3022                 BusLogic_Warning("Unable to Abort Command to Target %d - " "CCB Completed\n", HostAdapter, TargetID);
3023                 return SUCCESS;
3024         } else if (CCB->Status == BusLogic_CCB_Reset) {
3025                 BusLogic_Warning("Unable to Abort Command to Target %d - " "CCB Reset\n", HostAdapter, TargetID);
3026                 return SUCCESS;
3027         }
3028         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
3029                 /*
3030                    Attempt to Abort this CCB.  MultiMaster Firmware versions prior to 5.xx
3031                    do not generate Abort Tag messages, but only generate the non-tagged
3032                    Abort message.  Since non-tagged commands are not sent by the Host
3033                    Adapter until the queue of outstanding tagged commands has completed,
3034                    and the Abort message is treated as a non-tagged command, it is
3035                    effectively impossible to abort commands when Tagged Queuing is active.
3036                    Firmware version 5.xx does generate Abort Tag messages, so it is
3037                    possible to abort commands when Tagged Queuing is active.
3038                  */
3039                 if (HostAdapter->TargetFlags[TargetID].TaggedQueuingActive && HostAdapter->FirmwareVersion[0] < '5') {
3040                         BusLogic_Warning("Unable to Abort CCB #%ld to Target %d - " "Abort Tag Not Supported\n", HostAdapter, CCB->SerialNumber, TargetID);
3041                         return FAILURE;
3042                 } else if (BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxAbortCommand, CCB)) {
3043                         BusLogic_Warning("Aborting CCB #%ld to Target %d\n", HostAdapter, CCB->SerialNumber, TargetID);
3044                         BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsAttempted);
3045                         return SUCCESS;
3046                 } else {
3047                         BusLogic_Warning("Unable to Abort CCB #%ld to Target %d - " "No Outgoing Mailboxes\n", HostAdapter, CCB->SerialNumber, TargetID);
3048                         return FAILURE;
3049                 }
3050         } else {
3051                 /*
3052                    Call the FlashPoint SCCB Manager to abort execution of the CCB.
3053                  */
3054                 BusLogic_Warning("Aborting CCB #%ld to Target %d\n", HostAdapter, CCB->SerialNumber, TargetID);
3055                 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsAttempted);
3056                 FlashPoint_AbortCCB(HostAdapter->CardHandle, CCB);
3057                 /*
3058                    The Abort may have already been completed and
3059                    BusLogic_QueueCompletedCCB been called, or it
3060                    may still be pending.
3061                  */
3062                 if (CCB->Status == BusLogic_CCB_Completed) {
3063                         BusLogic_ProcessCompletedCCBs(HostAdapter);
3064                 }
3065                 return SUCCESS;
3066         }
3067         return SUCCESS;
3068 }
3069
3070 #endif
3071 /*
3072   BusLogic_ResetHostAdapter resets Host Adapter if possible, marking all
3073   currently executing SCSI Commands as having been Reset.
3074 */
3075
3076 static int BusLogic_ResetHostAdapter(struct BusLogic_HostAdapter *HostAdapter, bool HardReset)
3077 {
3078         struct BusLogic_CCB *CCB;
3079         int TargetID;
3080
3081         /*
3082          * Attempt to Reset and Reinitialize the Host Adapter.
3083          */
3084
3085         if (!(BusLogic_HardwareResetHostAdapter(HostAdapter, HardReset) && BusLogic_InitializeHostAdapter(HostAdapter))) {
3086                 BusLogic_Error("Resetting %s Failed\n", HostAdapter, HostAdapter->FullModelName);
3087                 return FAILURE;
3088         }
3089
3090         /*
3091          * Deallocate all currently executing CCBs.
3092          */
3093
3094         for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
3095                 if (CCB->Status == BusLogic_CCB_Active)
3096                         BusLogic_DeallocateCCB(CCB);
3097         /*
3098          * Wait a few seconds between the Host Adapter Hard Reset which
3099          * initiates a SCSI Bus Reset and issuing any SCSI Commands.  Some
3100          * SCSI devices get confused if they receive SCSI Commands too soon
3101          * after a SCSI Bus Reset.
3102          */
3103
3104         if (HardReset) {
3105                 spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
3106                 BusLogic_Delay(HostAdapter->BusSettleTime);
3107                 spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
3108         }
3109
3110         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3111                 HostAdapter->LastResetAttempted[TargetID] = jiffies;
3112                 HostAdapter->LastResetCompleted[TargetID] = jiffies;
3113         }
3114         return SUCCESS;
3115 }
3116
3117 /*
3118   BusLogic_BIOSDiskParameters returns the Heads/Sectors/Cylinders BIOS Disk
3119   Parameters for Disk.  The default disk geometry is 64 heads, 32 sectors, and
3120   the appropriate number of cylinders so as not to exceed drive capacity.  In
3121   order for disks equal to or larger than 1 GB to be addressable by the BIOS
3122   without exceeding the BIOS limitation of 1024 cylinders, Extended Translation
3123   may be enabled in AutoSCSI on FlashPoint Host Adapters and on "W" and "C"
3124   series MultiMaster Host Adapters, or by a dip switch setting on "S" and "A"
3125   series MultiMaster Host Adapters.  With Extended Translation enabled, drives
3126   between 1 GB inclusive and 2 GB exclusive are given a disk geometry of 128
3127   heads and 32 sectors, and drives above 2 GB inclusive are given a disk
3128   geometry of 255 heads and 63 sectors.  However, if the BIOS detects that the
3129   Extended Translation setting does not match the geometry in the partition
3130   table, then the translation inferred from the partition table will be used by
3131   the BIOS, and a warning may be displayed.
3132 */
3133
3134 static int BusLogic_BIOSDiskParameters(struct scsi_device *sdev, struct block_device *Device, sector_t capacity, int *Parameters)
3135 {
3136         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) sdev->host->hostdata;
3137         struct BIOS_DiskParameters *DiskParameters = (struct BIOS_DiskParameters *) Parameters;
3138         unsigned char *buf;
3139         if (HostAdapter->ExtendedTranslationEnabled && capacity >= 2 * 1024 * 1024 /* 1 GB in 512 byte sectors */ ) {
3140                 if (capacity >= 4 * 1024 * 1024 /* 2 GB in 512 byte sectors */ ) {
3141                         DiskParameters->Heads = 255;
3142                         DiskParameters->Sectors = 63;
3143                 } else {
3144                         DiskParameters->Heads = 128;
3145                         DiskParameters->Sectors = 32;
3146                 }
3147         } else {
3148                 DiskParameters->Heads = 64;
3149                 DiskParameters->Sectors = 32;
3150         }
3151         DiskParameters->Cylinders = (unsigned long) capacity / (DiskParameters->Heads * DiskParameters->Sectors);
3152         buf = scsi_bios_ptable(Device);
3153         if (buf == NULL)
3154                 return 0;
3155         /*
3156            If the boot sector partition table flag is valid, search for a partition
3157            table entry whose end_head matches one of the standard BusLogic geometry
3158            translations (64/32, 128/32, or 255/63).
3159          */
3160         if (*(unsigned short *) (buf + 64) == 0xAA55) {
3161                 struct partition *FirstPartitionEntry = (struct partition *) buf;
3162                 struct partition *PartitionEntry = FirstPartitionEntry;
3163                 int SavedCylinders = DiskParameters->Cylinders, PartitionNumber;
3164                 unsigned char PartitionEntryEndHead = 0, PartitionEntryEndSector = 0;
3165                 for (PartitionNumber = 0; PartitionNumber < 4; PartitionNumber++) {
3166                         PartitionEntryEndHead = PartitionEntry->end_head;
3167                         PartitionEntryEndSector = PartitionEntry->end_sector & 0x3F;
3168                         if (PartitionEntryEndHead == 64 - 1) {
3169                                 DiskParameters->Heads = 64;
3170                                 DiskParameters->Sectors = 32;
3171                                 break;
3172                         } else if (PartitionEntryEndHead == 128 - 1) {
3173                                 DiskParameters->Heads = 128;
3174                                 DiskParameters->Sectors = 32;
3175                                 break;
3176                         } else if (PartitionEntryEndHead == 255 - 1) {
3177                                 DiskParameters->Heads = 255;
3178                                 DiskParameters->Sectors = 63;
3179                                 break;
3180                         }
3181                         PartitionEntry++;
3182                 }
3183                 if (PartitionNumber == 4) {
3184                         PartitionEntryEndHead = FirstPartitionEntry->end_head;
3185                         PartitionEntryEndSector = FirstPartitionEntry->end_sector & 0x3F;
3186                 }
3187                 DiskParameters->Cylinders = (unsigned long) capacity / (DiskParameters->Heads * DiskParameters->Sectors);
3188                 if (PartitionNumber < 4 && PartitionEntryEndSector == DiskParameters->Sectors) {
3189                         if (DiskParameters->Cylinders != SavedCylinders)
3190                                 BusLogic_Warning("Adopting Geometry %d/%d from Partition Table\n", HostAdapter, DiskParameters->Heads, DiskParameters->Sectors);
3191                 } else if (PartitionEntryEndHead > 0 || PartitionEntryEndSector > 0) {
3192                         BusLogic_Warning("Warning: Partition Table appears to " "have Geometry %d/%d which is\n", HostAdapter, PartitionEntryEndHead + 1, PartitionEntryEndSector);
3193                         BusLogic_Warning("not compatible with current BusLogic " "Host Adapter Geometry %d/%d\n", HostAdapter, DiskParameters->Heads, DiskParameters->Sectors);
3194                 }
3195         }
3196         kfree(buf);
3197         return 0;
3198 }
3199
3200
3201 /*
3202   BugLogic_ProcDirectoryInfo implements /proc/scsi/BusLogic/<N>.
3203 */
3204
3205 static int BusLogic_ProcDirectoryInfo(struct Scsi_Host *shost, char *ProcBuffer, char **StartPointer, off_t Offset, int BytesAvailable, int WriteFlag)
3206 {
3207         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) shost->hostdata;
3208         struct BusLogic_TargetStatistics *TargetStatistics;
3209         int TargetID, Length;
3210         char *Buffer;
3211
3212         TargetStatistics = HostAdapter->TargetStatistics;
3213         if (WriteFlag) {
3214                 HostAdapter->ExternalHostAdapterResets = 0;
3215                 HostAdapter->HostAdapterInternalErrors = 0;
3216                 memset(TargetStatistics, 0, BusLogic_MaxTargetDevices * sizeof(struct BusLogic_TargetStatistics));
3217                 return 0;
3218         }
3219         Buffer = HostAdapter->MessageBuffer;
3220         Length = HostAdapter->MessageBufferLength;
3221         Length += sprintf(&Buffer[Length], "\n\
3222 Current Driver Queue Depth:     %d\n\
3223 Currently Allocated CCBs:       %d\n", HostAdapter->DriverQueueDepth, HostAdapter->AllocatedCCBs);
3224         Length += sprintf(&Buffer[Length], "\n\n\
3225                            DATA TRANSFER STATISTICS\n\
3226 \n\
3227 Target  Tagged Queuing  Queue Depth  Active  Attempted  Completed\n\
3228 ======  ==============  ===========  ======  =========  =========\n");
3229         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3230                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3231                 if (!TargetFlags->TargetExists)
3232                         continue;
3233                 Length += sprintf(&Buffer[Length], "  %2d       %s", TargetID, (TargetFlags->TaggedQueuingSupported ? (TargetFlags->TaggedQueuingActive ? "    Active" : (HostAdapter->TaggedQueuingPermitted & (1 << TargetID)
3234                                                                                                                                                                     ? "  Permitted" : "   Disabled"))
3235                                                                           : "Not Supported"));
3236                 Length += sprintf(&Buffer[Length],
3237                                   "         %3d       %3u    %9u        %9u\n", HostAdapter->QueueDepth[TargetID], HostAdapter->ActiveCommands[TargetID], TargetStatistics[TargetID].CommandsAttempted, TargetStatistics[TargetID].CommandsCompleted);
3238         }
3239         Length += sprintf(&Buffer[Length], "\n\
3240 Target  Read Commands  Write Commands   Total Bytes Read    Total Bytes Written\n\
3241 ======  =============  ==============  ===================  ===================\n");
3242         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3243                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3244                 if (!TargetFlags->TargetExists)
3245                         continue;
3246                 Length += sprintf(&Buffer[Length], "  %2d         %9u    %9u", TargetID, TargetStatistics[TargetID].ReadCommands, TargetStatistics[TargetID].WriteCommands);
3247                 if (TargetStatistics[TargetID].TotalBytesRead.Billions > 0)
3248                         Length += sprintf(&Buffer[Length], "     %9u%09u", TargetStatistics[TargetID].TotalBytesRead.Billions, TargetStatistics[TargetID].TotalBytesRead.Units);
3249                 else
3250                         Length += sprintf(&Buffer[Length], "            %9u", TargetStatistics[TargetID].TotalBytesRead.Units);
3251                 if (TargetStatistics[TargetID].TotalBytesWritten.Billions > 0)
3252                         Length += sprintf(&Buffer[Length], "   %9u%09u\n", TargetStatistics[TargetID].TotalBytesWritten.Billions, TargetStatistics[TargetID].TotalBytesWritten.Units);
3253                 else
3254                         Length += sprintf(&Buffer[Length], "         %9u\n", TargetStatistics[TargetID].TotalBytesWritten.Units);
3255         }
3256         Length += sprintf(&Buffer[Length], "\n\
3257 Target  Command    0-1KB      1-2KB      2-4KB      4-8KB     8-16KB\n\
3258 ======  =======  =========  =========  =========  =========  =========\n");
3259         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3260                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3261                 if (!TargetFlags->TargetExists)
3262                         continue;
3263                 Length +=
3264                     sprintf(&Buffer[Length],
3265                             "  %2d       Read    %9u  %9u  %9u  %9u  %9u\n", TargetID,
3266                             TargetStatistics[TargetID].ReadCommandSizeBuckets[0],
3267                             TargetStatistics[TargetID].ReadCommandSizeBuckets[1], TargetStatistics[TargetID].ReadCommandSizeBuckets[2], TargetStatistics[TargetID].ReadCommandSizeBuckets[3], TargetStatistics[TargetID].ReadCommandSizeBuckets[4]);
3268                 Length +=
3269                     sprintf(&Buffer[Length],
3270                             "  %2d       Write   %9u  %9u  %9u  %9u  %9u\n", TargetID,
3271                             TargetStatistics[TargetID].WriteCommandSizeBuckets[0],
3272                             TargetStatistics[TargetID].WriteCommandSizeBuckets[1], TargetStatistics[TargetID].WriteCommandSizeBuckets[2], TargetStatistics[TargetID].WriteCommandSizeBuckets[3], TargetStatistics[TargetID].WriteCommandSizeBuckets[4]);
3273         }
3274         Length += sprintf(&Buffer[Length], "\n\
3275 Target  Command   16-32KB    32-64KB   64-128KB   128-256KB   256KB+\n\
3276 ======  =======  =========  =========  =========  =========  =========\n");
3277         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3278                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3279                 if (!TargetFlags->TargetExists)
3280                         continue;
3281                 Length +=
3282                     sprintf(&Buffer[Length],
3283                             "  %2d       Read    %9u  %9u  %9u  %9u  %9u\n", TargetID,
3284                             TargetStatistics[TargetID].ReadCommandSizeBuckets[5],
3285                             TargetStatistics[TargetID].ReadCommandSizeBuckets[6], TargetStatistics[TargetID].ReadCommandSizeBuckets[7], TargetStatistics[TargetID].ReadCommandSizeBuckets[8], TargetStatistics[TargetID].ReadCommandSizeBuckets[9]);
3286                 Length +=
3287                     sprintf(&Buffer[Length],
3288                             "  %2d       Write   %9u  %9u  %9u  %9u  %9u\n", TargetID,
3289                             TargetStatistics[TargetID].WriteCommandSizeBuckets[5],
3290                             TargetStatistics[TargetID].WriteCommandSizeBuckets[6], TargetStatistics[TargetID].WriteCommandSizeBuckets[7], TargetStatistics[TargetID].WriteCommandSizeBuckets[8], TargetStatistics[TargetID].WriteCommandSizeBuckets[9]);
3291         }
3292         Length += sprintf(&Buffer[Length], "\n\n\
3293                            ERROR RECOVERY STATISTICS\n\
3294 \n\
3295           Command Aborts      Bus Device Resets   Host Adapter Resets\n\
3296 Target  Requested Completed  Requested Completed  Requested Completed\n\
3297   ID    \\\\\\\\ Attempted ////  \\\\\\\\ Attempted ////  \\\\\\\\ Attempted ////\n\
3298 ======   ===== ===== =====    ===== ===== =====    ===== ===== =====\n");
3299         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3300                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3301                 if (!TargetFlags->TargetExists)
3302                         continue;
3303                 Length += sprintf(&Buffer[Length], "\
3304   %2d    %5d %5d %5d    %5d %5d %5d        %5d %5d %5d\n", TargetID, TargetStatistics[TargetID].CommandAbortsRequested, TargetStatistics[TargetID].CommandAbortsAttempted, TargetStatistics[TargetID].CommandAbortsCompleted, TargetStatistics[TargetID].BusDeviceResetsRequested, TargetStatistics[TargetID].BusDeviceResetsAttempted, TargetStatistics[TargetID].BusDeviceResetsCompleted, TargetStatistics[TargetID].HostAdapterResetsRequested, TargetStatistics[TargetID].HostAdapterResetsAttempted, TargetStatistics[TargetID].HostAdapterResetsCompleted);
3305         }
3306         Length += sprintf(&Buffer[Length], "\nExternal Host Adapter Resets: %d\n", HostAdapter->ExternalHostAdapterResets);
3307         Length += sprintf(&Buffer[Length], "Host Adapter Internal Errors: %d\n", HostAdapter->HostAdapterInternalErrors);
3308         if (Length >= BusLogic_MessageBufferSize)
3309                 BusLogic_Error("Message Buffer length %d exceeds size %d\n", HostAdapter, Length, BusLogic_MessageBufferSize);
3310         if ((Length -= Offset) <= 0)
3311                 return 0;
3312         if (Length >= BytesAvailable)
3313                 Length = BytesAvailable;
3314         memcpy(ProcBuffer, HostAdapter->MessageBuffer + Offset, Length);
3315         *StartPointer = ProcBuffer;
3316         return Length;
3317 }
3318
3319
3320 /*
3321   BusLogic_Message prints Driver Messages.
3322 */
3323
3324 static void BusLogic_Message(enum BusLogic_MessageLevel MessageLevel, char *Format, struct BusLogic_HostAdapter *HostAdapter, ...)
3325 {
3326         static char Buffer[BusLogic_LineBufferSize];
3327         static bool BeginningOfLine = true;
3328         va_list Arguments;
3329         int Length = 0;
3330         va_start(Arguments, HostAdapter);
3331         Length = vsprintf(Buffer, Format, Arguments);
3332         va_end(Arguments);
3333         if (MessageLevel == BusLogic_AnnounceLevel) {
3334                 static int AnnouncementLines = 0;
3335                 strcpy(&HostAdapter->MessageBuffer[HostAdapter->MessageBufferLength], Buffer);
3336                 HostAdapter->MessageBufferLength += Length;
3337                 if (++AnnouncementLines <= 2)
3338                         printk("%sscsi: %s", BusLogic_MessageLevelMap[MessageLevel], Buffer);
3339         } else if (MessageLevel == BusLogic_InfoLevel) {
3340                 strcpy(&HostAdapter->MessageBuffer[HostAdapter->MessageBufferLength], Buffer);
3341                 HostAdapter->MessageBufferLength += Length;
3342                 if (BeginningOfLine) {
3343                         if (Buffer[0] != '\n' || Length > 1)
3344                                 printk("%sscsi%d: %s", BusLogic_MessageLevelMap[MessageLevel], HostAdapter->HostNumber, Buffer);
3345                 } else
3346                         printk("%s", Buffer);
3347         } else {
3348                 if (BeginningOfLine) {
3349                         if (HostAdapter != NULL && HostAdapter->HostAdapterInitialized)
3350                                 printk("%sscsi%d: %s", BusLogic_MessageLevelMap[MessageLevel], HostAdapter->HostNumber, Buffer);
3351                         else
3352                                 printk("%s%s", BusLogic_MessageLevelMap[MessageLevel], Buffer);
3353                 } else
3354                         printk("%s", Buffer);
3355         }
3356         BeginningOfLine = (Buffer[Length - 1] == '\n');
3357 }
3358
3359
3360 /*
3361   BusLogic_ParseKeyword parses an individual option keyword.  It returns true
3362   and updates the pointer if the keyword is recognized and false otherwise.
3363 */
3364
3365 static bool __init BusLogic_ParseKeyword(char **StringPointer, char *Keyword)
3366 {
3367         char *Pointer = *StringPointer;
3368         while (*Keyword != '\0') {
3369                 char StringChar = *Pointer++;
3370                 char KeywordChar = *Keyword++;
3371                 if (StringChar >= 'A' && StringChar <= 'Z')
3372                         StringChar += 'a' - 'Z';
3373                 if (KeywordChar >= 'A' && KeywordChar <= 'Z')
3374                         KeywordChar += 'a' - 'Z';
3375                 if (StringChar != KeywordChar)
3376                         return false;
3377         }
3378         *StringPointer = Pointer;
3379         return true;
3380 }
3381
3382
3383 /*
3384   BusLogic_ParseDriverOptions handles processing of BusLogic Driver Options
3385   specifications.
3386
3387   BusLogic Driver Options may be specified either via the Linux Kernel Command
3388   Line or via the Loadable Kernel Module Installation Facility.  Driver Options
3389   for multiple host adapters may be specified either by separating the option
3390   strings by a semicolon, or by specifying multiple "BusLogic=" strings on the
3391   command line.  Individual option specifications for a single host adapter are
3392   separated by commas.  The Probing and Debugging Options apply to all host
3393   adapters whereas the remaining options apply individually only to the
3394   selected host adapter.
3395
3396   The BusLogic Driver Probing Options are described in
3397   <file:Documentation/scsi/BusLogic.txt>.
3398 */
3399
3400 static int __init BusLogic_ParseDriverOptions(char *OptionsString)
3401 {
3402         while (true) {
3403                 struct BusLogic_DriverOptions *DriverOptions = &BusLogic_DriverOptions[BusLogic_DriverOptionsCount++];
3404                 int TargetID;
3405                 memset(DriverOptions, 0, sizeof(struct BusLogic_DriverOptions));
3406                 while (*OptionsString != '\0' && *OptionsString != ';') {
3407                         /* Probing Options. */
3408                         if (BusLogic_ParseKeyword(&OptionsString, "IO:")) {
3409                                 unsigned long IO_Address = simple_strtoul(OptionsString, &OptionsString, 0);
3410                                 BusLogic_ProbeOptions.LimitedProbeISA = true;
3411                                 switch (IO_Address) {
3412                                 case 0x330:
3413                                         BusLogic_ProbeOptions.Probe330 = true;
3414                                         break;
3415                                 case 0x334:
3416                                         BusLogic_ProbeOptions.Probe334 = true;
3417                                         break;
3418                                 case 0x230:
3419                                         BusLogic_ProbeOptions.Probe230 = true;
3420                                         break;
3421                                 case 0x234:
3422                                         BusLogic_ProbeOptions.Probe234 = true;
3423                                         break;
3424                                 case 0x130:
3425                                         BusLogic_ProbeOptions.Probe130 = true;
3426                                         break;
3427                                 case 0x134:
3428                                         BusLogic_ProbeOptions.Probe134 = true;
3429                                         break;
3430                                 default:
3431                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid I/O Address 0x%X)\n", NULL, IO_Address);
3432                                         return 0;
3433                                 }
3434                         } else if (BusLogic_ParseKeyword(&OptionsString, "NoProbeISA"))
3435                                 BusLogic_ProbeOptions.NoProbeISA = true;
3436                         else if (BusLogic_ParseKeyword(&OptionsString, "NoProbePCI"))
3437                                 BusLogic_ProbeOptions.NoProbePCI = true;
3438                         else if (BusLogic_ParseKeyword(&OptionsString, "NoProbe"))
3439                                 BusLogic_ProbeOptions.NoProbe = true;
3440                         else if (BusLogic_ParseKeyword(&OptionsString, "NoSortPCI"))
3441                                 BusLogic_ProbeOptions.NoSortPCI = true;
3442                         else if (BusLogic_ParseKeyword(&OptionsString, "MultiMasterFirst"))
3443                                 BusLogic_ProbeOptions.MultiMasterFirst = true;
3444                         else if (BusLogic_ParseKeyword(&OptionsString, "FlashPointFirst"))
3445                                 BusLogic_ProbeOptions.FlashPointFirst = true;
3446                         /* Tagged Queuing Options. */
3447                         else if (BusLogic_ParseKeyword(&OptionsString, "QueueDepth:[") || BusLogic_ParseKeyword(&OptionsString, "QD:[")) {
3448                                 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++) {
3449                                         unsigned short QueueDepth = simple_strtoul(OptionsString, &OptionsString, 0);
3450                                         if (QueueDepth > BusLogic_MaxTaggedQueueDepth) {
3451                                                 BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Queue Depth %d)\n", NULL, QueueDepth);
3452                                                 return 0;
3453                                         }
3454                                         DriverOptions->QueueDepth[TargetID] = QueueDepth;
3455                                         if (*OptionsString == ',')
3456                                                 OptionsString++;
3457                                         else if (*OptionsString == ']')
3458                                                 break;
3459                                         else {
3460                                                 BusLogic_Error("BusLogic: Invalid Driver Options " "(',' or ']' expected at '%s')\n", NULL, OptionsString);
3461                                                 return 0;
3462                                         }
3463                                 }
3464                                 if (*OptionsString != ']') {
3465                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(']' expected at '%s')\n", NULL, OptionsString);
3466                                         return 0;
3467                                 } else
3468                                         OptionsString++;
3469                         } else if (BusLogic_ParseKeyword(&OptionsString, "QueueDepth:") || BusLogic_ParseKeyword(&OptionsString, "QD:")) {
3470                                 unsigned short QueueDepth = simple_strtoul(OptionsString, &OptionsString, 0);
3471                                 if (QueueDepth == 0 || QueueDepth > BusLogic_MaxTaggedQueueDepth) {
3472                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Queue Depth %d)\n", NULL, QueueDepth);
3473                                         return 0;
3474                                 }
3475                                 DriverOptions->CommonQueueDepth = QueueDepth;
3476                                 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++)
3477                                         DriverOptions->QueueDepth[TargetID] = QueueDepth;
3478                         } else if (BusLogic_ParseKeyword(&OptionsString, "TaggedQueuing:") || BusLogic_ParseKeyword(&OptionsString, "TQ:")) {
3479                                 if (BusLogic_ParseKeyword(&OptionsString, "Default")) {
3480                                         DriverOptions->TaggedQueuingPermitted = 0x0000;
3481                                         DriverOptions->TaggedQueuingPermittedMask = 0x0000;
3482                                 } else if (BusLogic_ParseKeyword(&OptionsString, "Enable")) {
3483                                         DriverOptions->TaggedQueuingPermitted = 0xFFFF;
3484                                         DriverOptions->TaggedQueuingPermittedMask = 0xFFFF;
3485                                 } else if (BusLogic_ParseKeyword(&OptionsString, "Disable")) {
3486                                         DriverOptions->TaggedQueuingPermitted = 0x0000;
3487                                         DriverOptions->TaggedQueuingPermittedMask = 0xFFFF;
3488                                 } else {
3489                                         unsigned short TargetBit;
3490                                         for (TargetID = 0, TargetBit = 1; TargetID < BusLogic_MaxTargetDevices; TargetID++, TargetBit <<= 1)
3491                                                 switch (*OptionsString++) {
3492                                                 case 'Y':
3493                                                         DriverOptions->TaggedQueuingPermitted |= TargetBit;
3494                                                         DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3495                                                         break;
3496                                                 case 'N':
3497                                                         DriverOptions->TaggedQueuingPermitted &= ~TargetBit;
3498                                                         DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3499                                                         break;
3500                                                 case 'X':
3501                                                         break;
3502                                                 default:
3503                                                         OptionsString--;
3504                                                         TargetID = BusLogic_MaxTargetDevices;
3505                                                         break;
3506                                                 }
3507                                 }
3508                         }
3509                         /* Miscellaneous Options. */
3510                         else if (BusLogic_ParseKeyword(&OptionsString, "BusSettleTime:") || BusLogic_ParseKeyword(&OptionsString, "BST:")) {
3511                                 unsigned short BusSettleTime = simple_strtoul(OptionsString, &OptionsString, 0);
3512                                 if (BusSettleTime > 5 * 60) {
3513                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Bus Settle Time %d)\n", NULL, BusSettleTime);
3514                                         return 0;
3515                                 }
3516                                 DriverOptions->BusSettleTime = BusSettleTime;
3517                         } else if (BusLogic_ParseKeyword(&OptionsString, "InhibitTargetInquiry"))
3518                                 DriverOptions->LocalOptions.InhibitTargetInquiry = true;
3519                         /* Debugging Options. */
3520                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceProbe"))
3521                                 BusLogic_GlobalOptions.TraceProbe = true;
3522                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceHardwareReset"))
3523                                 BusLogic_GlobalOptions.TraceHardwareReset = true;
3524                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceConfiguration"))
3525                                 BusLogic_GlobalOptions.TraceConfiguration = true;
3526                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceErrors"))
3527                                 BusLogic_GlobalOptions.TraceErrors = true;
3528                         else if (BusLogic_ParseKeyword(&OptionsString, "Debug")) {
3529                                 BusLogic_GlobalOptions.TraceProbe = true;
3530                                 BusLogic_GlobalOptions.TraceHardwareReset = true;
3531                                 BusLogic_GlobalOptions.TraceConfiguration = true;
3532                                 BusLogic_GlobalOptions.TraceErrors = true;
3533                         }
3534                         if (*OptionsString == ',')
3535                                 OptionsString++;
3536                         else if (*OptionsString != ';' && *OptionsString != '\0') {
3537                                 BusLogic_Error("BusLogic: Unexpected Driver Option '%s' " "ignored\n", NULL, OptionsString);
3538                                 *OptionsString = '\0';
3539                         }
3540                 }
3541                 if (!(BusLogic_DriverOptionsCount == 0 || BusLogic_ProbeInfoCount == 0 || BusLogic_DriverOptionsCount == BusLogic_ProbeInfoCount)) {
3542                         BusLogic_Error("BusLogic: Invalid Driver Options " "(all or no I/O Addresses must be specified)\n", NULL);
3543                         return 0;
3544                 }
3545                 /*
3546                    Tagged Queuing is disabled when the Queue Depth is 1 since queuing
3547                    multiple commands is not possible.
3548                  */
3549                 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++)
3550                         if (DriverOptions->QueueDepth[TargetID] == 1) {
3551                                 unsigned short TargetBit = 1 << TargetID;
3552                                 DriverOptions->TaggedQueuingPermitted &= ~TargetBit;
3553                                 DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3554                         }
3555                 if (*OptionsString == ';')
3556                         OptionsString++;
3557                 if (*OptionsString == '\0')
3558                         return 0;
3559         }
3560         return 1;
3561 }
3562
3563 /*
3564   Get it all started
3565 */
3566
3567 static struct scsi_host_template Bus_Logic_template = {
3568         .module = THIS_MODULE,
3569         .proc_name = "BusLogic",
3570         .proc_info = BusLogic_ProcDirectoryInfo,
3571         .name = "BusLogic",
3572         .info = BusLogic_DriverInfo,
3573         .queuecommand = BusLogic_QueueCommand,
3574         .slave_configure = BusLogic_SlaveConfigure,
3575         .bios_param = BusLogic_BIOSDiskParameters,
3576         .eh_host_reset_handler = BusLogic_host_reset,
3577 #if 0
3578         .eh_abort_handler = BusLogic_AbortCommand,
3579 #endif
3580         .unchecked_isa_dma = 1,
3581         .max_sectors = 128,
3582         .use_clustering = ENABLE_CLUSTERING,
3583 };
3584
3585 /*
3586   BusLogic_Setup handles processing of Kernel Command Line Arguments.
3587 */
3588
3589 static int __init BusLogic_Setup(char *str)
3590 {
3591         int ints[3];
3592
3593         (void) get_options(str, ARRAY_SIZE(ints), ints);
3594
3595         if (ints[0] != 0) {
3596                 BusLogic_Error("BusLogic: Obsolete Command Line Entry " "Format Ignored\n", NULL);
3597                 return 0;
3598         }
3599         if (str == NULL || *str == '\0')
3600                 return 0;
3601         return BusLogic_ParseDriverOptions(str);
3602 }
3603
3604 /*
3605  * Exit function.  Deletes all hosts associated with this driver.
3606  */
3607
3608 static void __exit BusLogic_exit(void)
3609 {
3610         struct BusLogic_HostAdapter *ha, *next;
3611
3612         list_for_each_entry_safe(ha, next, &BusLogic_host_list, host_list)
3613                 BusLogic_ReleaseHostAdapter(ha);
3614 }
3615
3616 __setup("BusLogic=", BusLogic_Setup);
3617
3618 #ifdef MODULE
3619 static struct pci_device_id BusLogic_pci_tbl[] __devinitdata = {
3620         { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER,
3621           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3622         { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC,
3623           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3624         { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT,
3625           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3626         { }
3627 };
3628 #endif
3629 MODULE_DEVICE_TABLE(pci, BusLogic_pci_tbl);
3630
3631 module_init(BusLogic_init);
3632 module_exit(BusLogic_exit);