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   1 /* Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
   2  *
   3  * $Id: isd200.c,v 1.16 2002/04/22 03:39:43 mdharm Exp $
   4  *
   5  * Current development and maintenance:
   6  *   (C) 2001-2002 Björn Stenberg (bjorn@haxx.se)
   7  *
   8  * Developed with the assistance of:
   9  *   (C) 2002 Alan Stern <stern@rowland.org>
  10  *
  11  * Initial work:
  12  *   (C) 2000 In-System Design, Inc. (support@in-system.com)
  13  *
  14  * The ISD200 ASIC does not natively support ATA devices.  The chip
  15  * does implement an interface, the ATA Command Block (ATACB) which provides
  16  * a means of passing ATA commands and ATA register accesses to a device.
  17  *
  18  * This program is free software; you can redistribute it and/or modify it
  19  * under the terms of the GNU General Public License as published by the
  20  * Free Software Foundation; either version 2, or (at your option) any
  21  * later version.
  22  *
  23  * This program is distributed in the hope that it will be useful, but
  24  * WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  26  * General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License along
  29  * with this program; if not, write to the Free Software Foundation, Inc.,
  30  * 675 Mass Ave, Cambridge, MA 02139, USA.
  31  *
  32  * History:
  33  *
  34  *  2002-10-19: Removed the specialized transfer routines.
  35  *              (Alan Stern <stern@rowland.harvard.edu>)
  36  *  2001-02-24: Removed lots of duplicate code and simplified the structure.
  37  *            (bjorn@haxx.se)
  38  *  2002-01-16: Fixed endianness bug so it works on the ppc arch.
  39  *            (Luc Saillard <luc@saillard.org>)
  40  *  2002-01-17: All bitfields removed.
  41  *            (bjorn@haxx.se)
  42  */
  43
  44
  45 /* Include files */
  46
  47 #include <linux/jiffies.h>
  48 #include <linux/errno.h>
  49 #include <linux/slab.h>
  50 #include <linux/hdreg.h>
  51 #include <linux/ide.h>
  52
  53 #include <scsi/scsi.h>
  54 #include <scsi/scsi_cmnd.h>
  55 #include <scsi/scsi_device.h>
  56
  57 #include "usb.h"
  58 #include "transport.h"
  59 #include "protocol.h"
  60 #include "debug.h"
  61 #include "scsiglue.h"
  62 #include "isd200.h"
  63
  64
  65 /* Timeout defines (in Seconds) */
  66
  67 #define ISD200_ENUM_BSY_TIMEOUT         35
  68 #define ISD200_ENUM_DETECT_TIMEOUT      30
  69 #define ISD200_DEFAULT_TIMEOUT          30
  70
  71 /* device flags */
  72 #define DF_ATA_DEVICE           0x0001
  73 #define DF_MEDIA_STATUS_ENABLED 0x0002
  74 #define DF_REMOVABLE_MEDIA      0x0004
  75
  76 /* capability bit definitions */
  77 #define CAPABILITY_DMA          0x01
  78 #define CAPABILITY_LBA          0x02
  79
  80 /* command_setX bit definitions */
  81 #define COMMANDSET_REMOVABLE    0x02
  82 #define COMMANDSET_MEDIA_STATUS 0x10
  83
  84 /* ATA Vendor Specific defines */
  85 #define ATA_ADDRESS_DEVHEAD_STD      0xa0
  86 #define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
  87 #define ATA_ADDRESS_DEVHEAD_SLAVE    0x10
  88
  89 /* Action Select bits */
  90 #define ACTION_SELECT_0      0x01
  91 #define ACTION_SELECT_1      0x02
  92 #define ACTION_SELECT_2      0x04
  93 #define ACTION_SELECT_3      0x08
  94 #define ACTION_SELECT_4      0x10
  95 #define ACTION_SELECT_5      0x20
  96 #define ACTION_SELECT_6      0x40
  97 #define ACTION_SELECT_7      0x80
  98
  99 /* Register Select bits */
 100 #define REG_ALTERNATE_STATUS    0x01
 101 #define REG_DEVICE_CONTROL      0x01
 102 #define REG_ERROR               0x02
 103 #define REG_FEATURES            0x02
 104 #define REG_SECTOR_COUNT        0x04
 105 #define REG_SECTOR_NUMBER       0x08
 106 #define REG_CYLINDER_LOW        0x10
 107 #define REG_CYLINDER_HIGH       0x20
 108 #define REG_DEVICE_HEAD         0x40
 109 #define REG_STATUS              0x80
 110 #define REG_COMMAND             0x80
 111
 112 /* ATA error definitions not in <linux/hdreg.h> */
 113 #define ATA_ERROR_MEDIA_CHANGE          0x20
 114
 115 /* ATA command definitions not in <linux/hdreg.h> */
 116 #define ATA_COMMAND_GET_MEDIA_STATUS    0xDA
 117 #define ATA_COMMAND_MEDIA_EJECT         0xED
 118
 119 /* ATA drive control definitions */
 120 #define ATA_DC_DISABLE_INTERRUPTS       0x02
 121 #define ATA_DC_RESET_CONTROLLER         0x04
 122 #define ATA_DC_REENABLE_CONTROLLER      0x00
 123
 124 /*
 125  *  General purpose return codes
 126  */
 127
 128 #define ISD200_ERROR            -1
 129 #define ISD200_GOOD              0
 130
 131 /*
 132  * Transport return codes
 133  */
 134
 135 #define ISD200_TRANSPORT_GOOD       0   /* Transport good, command good     */
 136 #define ISD200_TRANSPORT_FAILED     1   /* Transport good, command failed   */
 137 #define ISD200_TRANSPORT_ERROR      2   /* Transport bad (i.e. device dead) */
 138
 139 /* driver action codes */
 140 #define ACTION_READ_STATUS      0
 141 #define ACTION_RESET            1
 142 #define ACTION_REENABLE         2
 143 #define ACTION_SOFT_RESET       3
 144 #define ACTION_ENUM             4
 145 #define ACTION_IDENTIFY         5
 146
 147
 148 /*
 149  * ata_cdb struct
 150  */
 151
 152
 153 union ata_cdb {
 154         struct {
 155                 unsigned char SignatureByte0;
 156                 unsigned char SignatureByte1;
 157                 unsigned char ActionSelect;
 158                 unsigned char RegisterSelect;
 159                 unsigned char TransferBlockSize;
 160                 unsigned char WriteData3F6;
 161                 unsigned char WriteData1F1;
 162                 unsigned char WriteData1F2;
 163                 unsigned char WriteData1F3;
 164                 unsigned char WriteData1F4;
 165                 unsigned char WriteData1F5;
 166                 unsigned char WriteData1F6;
 167                 unsigned char WriteData1F7;
 168                 unsigned char Reserved[3];
 169         } generic;
 170
 171         struct {
 172                 unsigned char SignatureByte0;
 173                 unsigned char SignatureByte1;
 174                 unsigned char ActionSelect;
 175                 unsigned char RegisterSelect;
 176                 unsigned char TransferBlockSize;
 177                 unsigned char AlternateStatusByte;
 178                 unsigned char ErrorByte;
 179                 unsigned char SectorCountByte;
 180                 unsigned char SectorNumberByte;
 181                 unsigned char CylinderLowByte;
 182                 unsigned char CylinderHighByte;
 183                 unsigned char DeviceHeadByte;
 184                 unsigned char StatusByte;
 185                 unsigned char Reserved[3];
 186         } read;
 187
 188         struct {
 189                 unsigned char SignatureByte0;
 190                 unsigned char SignatureByte1;
 191                 unsigned char ActionSelect;
 192                 unsigned char RegisterSelect;
 193                 unsigned char TransferBlockSize;
 194                 unsigned char DeviceControlByte;
 195                 unsigned char FeaturesByte;
 196                 unsigned char SectorCountByte;
 197                 unsigned char SectorNumberByte;
 198                 unsigned char CylinderLowByte;
 199                 unsigned char CylinderHighByte;
 200                 unsigned char DeviceHeadByte;
 201                 unsigned char CommandByte;
 202                 unsigned char Reserved[3];
 203         } write;
 204 };
 205
 206
 207 /*
 208  * Inquiry data structure. This is the data returned from the target
 209  * after it receives an inquiry.
 210  *
 211  * This structure may be extended by the number of bytes specified
 212  * in the field AdditionalLength. The defined size constant only
 213  * includes fields through ProductRevisionLevel.
 214  */
 215
 216 /*
 217  * DeviceType field
 218  */
 219 #define DIRECT_ACCESS_DEVICE        0x00    /* disks */
 220 #define DEVICE_REMOVABLE                0x80
 221
 222 struct inquiry_data {
 223         unsigned char DeviceType;
 224         unsigned char DeviceTypeModifier;
 225         unsigned char Versions;
 226         unsigned char Format;
 227         unsigned char AdditionalLength;
 228         unsigned char Reserved[2];
 229         unsigned char Capability;
 230         unsigned char VendorId[8];
 231         unsigned char ProductId[16];
 232         unsigned char ProductRevisionLevel[4];
 233         unsigned char VendorSpecific[20];
 234         unsigned char Reserved3[40];
 235 } __attribute__ ((packed));
 236
 237 /*
 238  * INQUIRY data buffer size
 239  */
 240
 241 #define INQUIRYDATABUFFERSIZE 36
 242
 243
 244 /*
 245  * ISD200 CONFIG data struct
 246  */
 247
 248 #define ATACFG_TIMING     0x0f
 249 #define ATACFG_ATAPI_RESET     0x10
 250 #define ATACFG_MASTER     0x20
 251 #define ATACFG_BLOCKSIZE       0xa0
 252
 253 #define ATACFGE_LAST_LUN       0x07
 254 #define ATACFGE_DESC_OVERRIDE  0x08
 255 #define ATACFGE_STATE_SUSPEND  0x10
 256 #define ATACFGE_SKIP_BOOT      0x20
 257 #define ATACFGE_CONF_DESC2     0x40
 258 #define ATACFGE_INIT_STATUS    0x80
 259
 260 #define CFG_CAPABILITY_SRST    0x01
 261
 262 struct isd200_config {
 263         unsigned char EventNotification;
 264         unsigned char ExternalClock;
 265         unsigned char ATAInitTimeout;
 266         unsigned char ATAConfig;
 267         unsigned char ATAMajorCommand;
 268         unsigned char ATAMinorCommand;
 269         unsigned char ATAExtraConfig;
 270         unsigned char Capability;
 271 }__attribute__ ((packed));
 272
 273
 274 /*
 275  * ISD200 driver information struct
 276  */
 277
 278 struct isd200_info {
 279         struct inquiry_data InquiryData;
 280         struct hd_driveid *id;
 281         struct isd200_config ConfigData;
 282         unsigned char *RegsBuf;
 283         unsigned char ATARegs[8];
 284         unsigned char DeviceHead;
 285         unsigned char DeviceFlags;
 286
 287         /* maximum number of LUNs supported */
 288         unsigned char MaxLUNs;
 289         struct scsi_cmnd srb;
 290 };
 291
 292
 293 /*
 294  * Read Capacity Data - returned in Big Endian format
 295  */
 296
 297 struct read_capacity_data {
 298         __be32 LogicalBlockAddress;
 299         __be32 BytesPerBlock;
 300 };
 301
 302 /*
 303  * Read Block Limits Data - returned in Big Endian format
 304  * This structure returns the maximum and minimum block
 305  * size for a TAPE device.
 306  */
 307
 308 struct read_block_limits {
 309         unsigned char Reserved;
 310         unsigned char BlockMaximumSize[3];
 311         unsigned char BlockMinimumSize[2];
 312 };
 313
 314
 315 /*
 316  * Sense Data Format
 317  */
 318
 319 #define SENSE_ERRCODE      0x7f
 320 #define SENSE_ERRCODE_VALID     0x80
 321 #define SENSE_FLAG_SENSE_KEY    0x0f
 322 #define SENSE_FLAG_BAD_LENGTH   0x20
 323 #define SENSE_FLAG_END_OF_MEDIA 0x40
 324 #define SENSE_FLAG_FILE_MARK    0x80
 325 struct sense_data {
 326         unsigned char ErrorCode;
 327         unsigned char SegmentNumber;
 328         unsigned char Flags;
 329         unsigned char Information[4];
 330         unsigned char AdditionalSenseLength;
 331         unsigned char CommandSpecificInformation[4];
 332         unsigned char AdditionalSenseCode;
 333         unsigned char AdditionalSenseCodeQualifier;
 334         unsigned char FieldReplaceableUnitCode;
 335         unsigned char SenseKeySpecific[3];
 336 } __attribute__ ((packed));
 337
 338 /*
 339  * Default request sense buffer size
 340  */
 341
 342 #define SENSE_BUFFER_SIZE 18
 343
 344 /***********************************************************************
 345  * Helper routines
 346  ***********************************************************************/
 347
 348 /**************************************************************************
 349  * isd200_build_sense
 350  *
 351  *  Builds an artificial sense buffer to report the results of a
 352  *  failed command.
 353  *
 354  * RETURNS:
 355  *    void
 356  */
 357 static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
 358 {
 359         struct isd200_info *info = (struct isd200_info *)us->extra;
 360         struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
 361         unsigned char error = info->ATARegs[IDE_ERROR_OFFSET];
 362
 363         if(error & ATA_ERROR_MEDIA_CHANGE) {
 364                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 365                 buf->AdditionalSenseLength = 0xb;
 366                 buf->Flags = UNIT_ATTENTION;
 367                 buf->AdditionalSenseCode = 0;
 368                 buf->AdditionalSenseCodeQualifier = 0;
 369         } else if(error & MCR_ERR) {
 370                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 371                 buf->AdditionalSenseLength = 0xb;
 372                 buf->Flags =  UNIT_ATTENTION;
 373                 buf->AdditionalSenseCode = 0;
 374                 buf->AdditionalSenseCodeQualifier = 0;
 375         } else if(error & TRK0_ERR) {
 376                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 377                 buf->AdditionalSenseLength = 0xb;
 378                 buf->Flags =  NOT_READY;
 379                 buf->AdditionalSenseCode = 0;
 380                 buf->AdditionalSenseCodeQualifier = 0;
 381         } else if(error & ECC_ERR) {
 382                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 383                 buf->AdditionalSenseLength = 0xb;
 384                 buf->Flags =  DATA_PROTECT;
 385                 buf->AdditionalSenseCode = 0;
 386                 buf->AdditionalSenseCodeQualifier = 0;
 387         } else {
 388                 buf->ErrorCode = 0;
 389                 buf->AdditionalSenseLength = 0;
 390                 buf->Flags =  0;
 391                 buf->AdditionalSenseCode = 0;
 392                 buf->AdditionalSenseCodeQualifier = 0;
 393         }
 394 }
 395
 396
 397 /***********************************************************************
 398  * Transport routines
 399  ***********************************************************************/
 400
 401
 402 /**************************************************************************
 403  *  isd200_action
 404  *
 405  * Routine for sending commands to the isd200
 406  *
 407  * RETURNS:
 408  *    ISD status code
 409  */
 410 static int isd200_action( struct us_data *us, int action,
 411                           void* pointer, int value )
 412 {
 413         union ata_cdb ata;
 414         struct scsi_device srb_dev;
 415         struct isd200_info *info = (struct isd200_info *)us->extra;
 416         struct scsi_cmnd *srb = &info->srb;
 417         int status;
 418
 419         memset(&ata, 0, sizeof(ata));
 420         memset(&srb_dev, 0, sizeof(srb_dev));
 421         srb->device = &srb_dev;
 422         ++srb->serial_number;
 423
 424         ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
 425         ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
 426         ata.generic.TransferBlockSize = 1;
 427
 428         switch ( action ) {
 429         case ACTION_READ_STATUS:
 430                 US_DEBUGP("   isd200_action(READ_STATUS)\n");
 431                 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
 432                 ata.generic.RegisterSelect =
 433                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
 434                   REG_STATUS | REG_ERROR;
 435                 srb->sc_data_direction = DMA_FROM_DEVICE;
 436                 srb->request_buffer = pointer;
 437                 srb->request_bufflen = value;
 438                 break;
 439
 440         case ACTION_ENUM:
 441                 US_DEBUGP("   isd200_action(ENUM,0x%02x)\n",value);
 442                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 443                                            ACTION_SELECT_3|ACTION_SELECT_4|
 444                                            ACTION_SELECT_5;
 445                 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
 446                 ata.write.DeviceHeadByte = value;
 447                 srb->sc_data_direction = DMA_NONE;
 448                 break;
 449
 450         case ACTION_RESET:
 451                 US_DEBUGP("   isd200_action(RESET)\n");
 452                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 453                                            ACTION_SELECT_3|ACTION_SELECT_4;
 454                 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
 455                 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
 456                 srb->sc_data_direction = DMA_NONE;
 457                 break;
 458
 459         case ACTION_REENABLE:
 460                 US_DEBUGP("   isd200_action(REENABLE)\n");
 461                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 462                                            ACTION_SELECT_3|ACTION_SELECT_4;
 463                 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
 464                 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
 465                 srb->sc_data_direction = DMA_NONE;
 466                 break;
 467
 468         case ACTION_SOFT_RESET:
 469                 US_DEBUGP("   isd200_action(SOFT_RESET)\n");
 470                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
 471                 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
 472                 ata.write.DeviceHeadByte = info->DeviceHead;
 473                 ata.write.CommandByte = WIN_SRST;
 474                 srb->sc_data_direction = DMA_NONE;
 475                 break;
 476
 477         case ACTION_IDENTIFY:
 478                 US_DEBUGP("   isd200_action(IDENTIFY)\n");
 479                 ata.generic.RegisterSelect = REG_COMMAND;
 480                 ata.write.CommandByte = WIN_IDENTIFY;
 481                 srb->sc_data_direction = DMA_FROM_DEVICE;
 482                 srb->request_buffer = (void *) info->id;
 483                 srb->request_bufflen = sizeof(struct hd_driveid);
 484                 break;
 485
 486         default:
 487                 US_DEBUGP("Error: Undefined action %d\n",action);
 488                 break;
 489         }
 490
 491         memcpy(srb->cmnd, &ata, sizeof(ata.generic));
 492         srb->cmd_len = sizeof(ata.generic);
 493         status = usb_stor_Bulk_transport(srb, us);
 494         if (status == USB_STOR_TRANSPORT_GOOD)
 495                 status = ISD200_GOOD;
 496         else {
 497                 US_DEBUGP("   isd200_action(0x%02x) error: %d\n",action,status);
 498                 status = ISD200_ERROR;
 499                 /* need to reset device here */
 500         }
 501
 502         return status;
 503 }
 504
 505 /**************************************************************************
 506  * isd200_read_regs
 507  *
 508  * Read ATA Registers
 509  *
 510  * RETURNS:
 511  *    ISD status code
 512  */
 513 static int isd200_read_regs( struct us_data *us )
 514 {
 515         struct isd200_info *info = (struct isd200_info *)us->extra;
 516         int retStatus = ISD200_GOOD;
 517         int transferStatus;
 518
 519         US_DEBUGP("Entering isd200_IssueATAReadRegs\n");
 520
 521         transferStatus = isd200_action( us, ACTION_READ_STATUS,
 522                                     info->RegsBuf, sizeof(info->ATARegs) );
 523         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 524                 US_DEBUGP("   Error reading ATA registers\n");
 525                 retStatus = ISD200_ERROR;
 526         } else {
 527                 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
 528                 US_DEBUGP("   Got ATA Register[IDE_ERROR_OFFSET] = 0x%x\n",
 529                           info->ATARegs[IDE_ERROR_OFFSET]);
 530         }
 531
 532         return retStatus;
 533 }
 534
 535
 536 /**************************************************************************
 537  * Invoke the transport and basic error-handling/recovery methods
 538  *
 539  * This is used by the protocol layers to actually send the message to
 540  * the device and receive the response.
 541  */
 542 static void isd200_invoke_transport( struct us_data *us,
 543                               struct scsi_cmnd *srb,
 544                               union ata_cdb *ataCdb )
 545 {
 546         int need_auto_sense = 0;
 547         int transferStatus;
 548         int result;
 549
 550         /* send the command to the transport layer */
 551         memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
 552         srb->cmd_len = sizeof(ataCdb->generic);
 553         transferStatus = usb_stor_Bulk_transport(srb, us);
 554
 555         /* if the command gets aborted by the higher layers, we need to
 556          * short-circuit all other processing
 557          */
 558         if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) {
 559                 US_DEBUGP("-- command was aborted\n");
 560                 goto Handle_Abort;
 561         }
 562
 563         switch (transferStatus) {
 564
 565         case USB_STOR_TRANSPORT_GOOD:
 566                 /* Indicate a good result */
 567                 srb->result = SAM_STAT_GOOD;
 568                 break;
 569
 570         case USB_STOR_TRANSPORT_NO_SENSE:
 571                 US_DEBUGP("-- transport indicates protocol failure\n");
 572                 srb->result = SAM_STAT_CHECK_CONDITION;
 573                 return;
 574
 575         case USB_STOR_TRANSPORT_FAILED:
 576                 US_DEBUGP("-- transport indicates command failure\n");
 577                 need_auto_sense = 1;
 578                 break;
 579
 580         case USB_STOR_TRANSPORT_ERROR:
 581                 US_DEBUGP("-- transport indicates transport error\n");
 582                 srb->result = DID_ERROR << 16;
 583                 /* Need reset here */
 584                 return;
 585
 586         default:
 587                 US_DEBUGP("-- transport indicates unknown error\n");
 588                 srb->result = DID_ERROR << 16;
 589                 /* Need reset here */
 590                 return;
 591         }
 592
 593         if ((srb->resid > 0) &&
 594             !((srb->cmnd[0] == REQUEST_SENSE) ||
 595               (srb->cmnd[0] == INQUIRY) ||
 596               (srb->cmnd[0] == MODE_SENSE) ||
 597               (srb->cmnd[0] == LOG_SENSE) ||
 598               (srb->cmnd[0] == MODE_SENSE_10))) {
 599                 US_DEBUGP("-- unexpectedly short transfer\n");
 600                 need_auto_sense = 1;
 601         }
 602
 603         if (need_auto_sense) {
 604                 result = isd200_read_regs(us);
 605                 if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) {
 606                         US_DEBUGP("-- auto-sense aborted\n");
 607                         goto Handle_Abort;
 608                 }
 609                 if (result == ISD200_GOOD) {
 610                         isd200_build_sense(us, srb);
 611                         srb->result = SAM_STAT_CHECK_CONDITION;
 612
 613                         /* If things are really okay, then let's show that */
 614                         if ((srb->sense_buffer[2] & 0xf) == 0x0)
 615                                 srb->result = SAM_STAT_GOOD;
 616                 } else {
 617                         srb->result = DID_ERROR << 16;
 618                         /* Need reset here */
 619                 }
 620         }
 621
 622         /* Regardless of auto-sense, if we _know_ we have an error
 623          * condition, show that in the result code
 624          */
 625         if (transferStatus == USB_STOR_TRANSPORT_FAILED)
 626                 srb->result = SAM_STAT_CHECK_CONDITION;
 627         return;
 628
 629         /* abort processing: the bulk-only transport requires a reset
 630          * following an abort */
 631         Handle_Abort:
 632         srb->result = DID_ABORT << 16;
 633
 634         /* permit the reset transfer to take place */
 635         clear_bit(US_FLIDX_ABORTING, &us->flags);
 636         /* Need reset here */
 637 }
 638
 639 #ifdef CONFIG_USB_STORAGE_DEBUG
 640 static void isd200_log_config( struct isd200_info* info )
 641 {
 642         US_DEBUGP("      Event Notification: 0x%x\n",
 643                   info->ConfigData.EventNotification);
 644         US_DEBUGP("      External Clock: 0x%x\n",
 645                   info->ConfigData.ExternalClock);
 646         US_DEBUGP("      ATA Init Timeout: 0x%x\n",
 647                   info->ConfigData.ATAInitTimeout);
 648         US_DEBUGP("      ATAPI Command Block Size: 0x%x\n",
 649                   (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
 650         US_DEBUGP("      Master/Slave Selection: 0x%x\n",
 651                   info->ConfigData.ATAConfig & ATACFG_MASTER);
 652         US_DEBUGP("      ATAPI Reset: 0x%x\n",
 653                   info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
 654         US_DEBUGP("      ATA Timing: 0x%x\n",
 655                   info->ConfigData.ATAConfig & ATACFG_TIMING);
 656         US_DEBUGP("      ATA Major Command: 0x%x\n",
 657                   info->ConfigData.ATAMajorCommand);
 658         US_DEBUGP("      ATA Minor Command: 0x%x\n",
 659                   info->ConfigData.ATAMinorCommand);
 660         US_DEBUGP("      Init Status: 0x%x\n",
 661                   info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
 662         US_DEBUGP("      Config Descriptor 2: 0x%x\n",
 663                   info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
 664         US_DEBUGP("      Skip Device Boot: 0x%x\n",
 665                   info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
 666         US_DEBUGP("      ATA 3 State Supsend: 0x%x\n",
 667                   info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
 668         US_DEBUGP("      Descriptor Override: 0x%x\n",
 669                   info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
 670         US_DEBUGP("      Last LUN Identifier: 0x%x\n",
 671                   info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
 672         US_DEBUGP("      SRST Enable: 0x%x\n",
 673                   info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
 674 }
 675 #endif
 676
 677 /**************************************************************************
 678  * isd200_write_config
 679  *
 680  * Write the ISD200 Configuration data
 681  *
 682  * RETURNS:
 683  *    ISD status code
 684  */
 685 static int isd200_write_config( struct us_data *us )
 686 {
 687         struct isd200_info *info = (struct isd200_info *)us->extra;
 688         int retStatus = ISD200_GOOD;
 689         int result;
 690
 691 #ifdef CONFIG_USB_STORAGE_DEBUG
 692         US_DEBUGP("Entering isd200_write_config\n");
 693         US_DEBUGP("   Writing the following ISD200 Config Data:\n");
 694         isd200_log_config(info);
 695 #endif
 696
 697         /* let's send the command via the control pipe */
 698         result = usb_stor_ctrl_transfer(
 699                 us,
 700                 us->send_ctrl_pipe,
 701                 0x01,
 702                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 703                 0x0000,
 704                 0x0002,
 705                 (void *) &info->ConfigData,
 706                 sizeof(info->ConfigData));
 707
 708         if (result >= 0) {
 709                 US_DEBUGP("   ISD200 Config Data was written successfully\n");
 710         } else {
 711                 US_DEBUGP("   Request to write ISD200 Config Data failed!\n");
 712                 retStatus = ISD200_ERROR;
 713         }
 714
 715         US_DEBUGP("Leaving isd200_write_config %08X\n", retStatus);
 716         return retStatus;
 717 }
 718
 719
 720 /**************************************************************************
 721  * isd200_read_config
 722  *
 723  * Reads the ISD200 Configuration data
 724  *
 725  * RETURNS:
 726  *    ISD status code
 727  */
 728 static int isd200_read_config( struct us_data *us )
 729 {
 730         struct isd200_info *info = (struct isd200_info *)us->extra;
 731         int retStatus = ISD200_GOOD;
 732         int result;
 733
 734         US_DEBUGP("Entering isd200_read_config\n");
 735
 736         /* read the configuration information from ISD200.  Use this to */
 737         /* determine what the special ATA CDB bytes are.                */
 738
 739         result = usb_stor_ctrl_transfer(
 740                 us,
 741                 us->recv_ctrl_pipe,
 742                 0x02,
 743                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 744                 0x0000,
 745                 0x0002,
 746                 (void *) &info->ConfigData,
 747                 sizeof(info->ConfigData));
 748
 749
 750         if (result >= 0) {
 751                 US_DEBUGP("   Retrieved the following ISD200 Config Data:\n");
 752 #ifdef CONFIG_USB_STORAGE_DEBUG
 753                 isd200_log_config(info);
 754 #endif
 755         } else {
 756                 US_DEBUGP("   Request to get ISD200 Config Data failed!\n");
 757                 retStatus = ISD200_ERROR;
 758         }
 759
 760         US_DEBUGP("Leaving isd200_read_config %08X\n", retStatus);
 761         return retStatus;
 762 }
 763
 764
 765 /**************************************************************************
 766  * isd200_atapi_soft_reset
 767  *
 768  * Perform an Atapi Soft Reset on the device
 769  *
 770  * RETURNS:
 771  *    NT status code
 772  */
 773 static int isd200_atapi_soft_reset( struct us_data *us )
 774 {
 775         int retStatus = ISD200_GOOD;
 776         int transferStatus;
 777
 778         US_DEBUGP("Entering isd200_atapi_soft_reset\n");
 779
 780         transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
 781         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 782                 US_DEBUGP("   Error issuing Atapi Soft Reset\n");
 783                 retStatus = ISD200_ERROR;
 784         }
 785
 786         US_DEBUGP("Leaving isd200_atapi_soft_reset %08X\n", retStatus);
 787         return retStatus;
 788 }
 789
 790
 791 /**************************************************************************
 792  * isd200_srst
 793  *
 794  * Perform an SRST on the device
 795  *
 796  * RETURNS:
 797  *    ISD status code
 798  */
 799 static int isd200_srst( struct us_data *us )
 800 {
 801         int retStatus = ISD200_GOOD;
 802         int transferStatus;
 803
 804         US_DEBUGP("Entering isd200_SRST\n");
 805
 806         transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
 807
 808         /* check to see if this request failed */
 809         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 810                 US_DEBUGP("   Error issuing SRST\n");
 811                 retStatus = ISD200_ERROR;
 812         } else {
 813                 /* delay 10ms to give the drive a chance to see it */
 814                 msleep(10);
 815
 816                 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
 817                 if (transferStatus != ISD200_TRANSPORT_GOOD) {
 818                         US_DEBUGP("   Error taking drive out of reset\n");
 819                         retStatus = ISD200_ERROR;
 820                 } else {
 821                         /* delay 50ms to give the drive a chance to recover after SRST */
 822                         msleep(50);
 823                 }
 824         }
 825
 826         US_DEBUGP("Leaving isd200_srst %08X\n", retStatus);
 827         return retStatus;
 828 }
 829
 830
 831 /**************************************************************************
 832  * isd200_try_enum
 833  *
 834  * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
 835  * and tries to analyze the status registers
 836  *
 837  * RETURNS:
 838  *    ISD status code
 839  */
 840 static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
 841                            int detect )
 842 {
 843         int status = ISD200_GOOD;
 844         unsigned long endTime;
 845         struct isd200_info *info = (struct isd200_info *)us->extra;
 846         unsigned char *regs = info->RegsBuf;
 847         int recheckAsMaster = 0;
 848
 849         if ( detect )
 850                 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
 851         else
 852                 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
 853
 854         /* loop until we detect !BSY or timeout */
 855         while(1) {
 856 #ifdef CONFIG_USB_STORAGE_DEBUG
 857                 char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ?
 858                         "Master" : "Slave";
 859 #endif
 860
 861                 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
 862                 if ( status != ISD200_GOOD )
 863                         break;
 864
 865                 status = isd200_action( us, ACTION_READ_STATUS,
 866                                         regs, 8 );
 867                 if ( status != ISD200_GOOD )
 868                         break;
 869
 870                 if (!detect) {
 871                         if (regs[IDE_STATUS_OFFSET] & BUSY_STAT ) {
 872                                 US_DEBUGP("   %s status is still BSY, try again...\n",mstr);
 873                         } else {
 874                                 US_DEBUGP("   %s status !BSY, continue with next operation\n",mstr);
 875                                 break;
 876                         }
 877                 }
 878                 /* check for BUSY_STAT and */
 879                 /* WRERR_STAT (workaround ATA Zip drive) and */
 880                 /* ERR_STAT (workaround for Archos CD-ROM) */
 881                 else if (regs[IDE_STATUS_OFFSET] &
 882                          (BUSY_STAT | WRERR_STAT | ERR_STAT )) {
 883                         US_DEBUGP("   Status indicates it is not ready, try again...\n");
 884                 }
 885                 /* check for DRDY, ATA devices set DRDY after SRST */
 886                 else if (regs[IDE_STATUS_OFFSET] & READY_STAT) {
 887                         US_DEBUGP("   Identified ATA device\n");
 888                         info->DeviceFlags |= DF_ATA_DEVICE;
 889                         info->DeviceHead = master_slave;
 890                         break;
 891                 }
 892                 /* check Cylinder High/Low to
 893                    determine if it is an ATAPI device
 894                 */
 895                 else if ((regs[IDE_HCYL_OFFSET] == 0xEB) &&
 896                          (regs[IDE_LCYL_OFFSET] == 0x14)) {
 897                         /* It seems that the RICOH
 898                            MP6200A CD/RW drive will
 899                            report itself okay as a
 900                            slave when it is really a
 901                            master. So this check again
 902                            as a master device just to
 903                            make sure it doesn't report
 904                            itself okay as a master also
 905                         */
 906                         if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
 907                             !recheckAsMaster) {
 908                                 US_DEBUGP("   Identified ATAPI device as slave.  Rechecking again as master\n");
 909                                 recheckAsMaster = 1;
 910                                 master_slave = ATA_ADDRESS_DEVHEAD_STD;
 911                         } else {
 912                                 US_DEBUGP("   Identified ATAPI device\n");
 913                                 info->DeviceHead = master_slave;
 914
 915                                 status = isd200_atapi_soft_reset(us);
 916                                 break;
 917                         }
 918                 } else {
 919                         US_DEBUGP("   Not ATA, not ATAPI. Weird.\n");
 920                         break;
 921                 }
 922
 923                 /* check for timeout on this request */
 924                 if (time_after_eq(jiffies, endTime)) {
 925                         if (!detect)
 926                                 US_DEBUGP("   BSY check timeout, just continue with next operation...\n");
 927                         else
 928                                 US_DEBUGP("   Device detect timeout!\n");
 929                         break;
 930                 }
 931         }
 932
 933         return status;
 934 }
 935
 936 /**************************************************************************
 937  * isd200_manual_enum
 938  *
 939  * Determines if the drive attached is an ATA or ATAPI and if it is a
 940  * master or slave.
 941  *
 942  * RETURNS:
 943  *    ISD status code
 944  */
 945 static int isd200_manual_enum(struct us_data *us)
 946 {
 947         struct isd200_info *info = (struct isd200_info *)us->extra;
 948         int retStatus = ISD200_GOOD;
 949
 950         US_DEBUGP("Entering isd200_manual_enum\n");
 951
 952         retStatus = isd200_read_config(us);
 953         if (retStatus == ISD200_GOOD) {
 954                 int isslave;
 955                 /* master or slave? */
 956                 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
 957                 if (retStatus == ISD200_GOOD)
 958                         retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
 959
 960                 if (retStatus == ISD200_GOOD) {
 961                         retStatus = isd200_srst(us);
 962                         if (retStatus == ISD200_GOOD)
 963                                 /* ata or atapi? */
 964                                 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
 965                 }
 966
 967                 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
 968                 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
 969                         US_DEBUGP("   Setting Master/Slave selection to %d\n", isslave);
 970                         info->ConfigData.ATAConfig &= 0x3f;
 971                         info->ConfigData.ATAConfig |= (isslave<<6);
 972                         retStatus = isd200_write_config(us);
 973                 }
 974         }
 975
 976         US_DEBUGP("Leaving isd200_manual_enum %08X\n", retStatus);
 977         return(retStatus);
 978 }
 979
 980
 981 /**************************************************************************
 982  * isd200_get_inquiry_data
 983  *
 984  * Get inquiry data
 985  *
 986  * RETURNS:
 987  *    ISD status code
 988  */
 989 static int isd200_get_inquiry_data( struct us_data *us )
 990 {
 991         struct isd200_info *info = (struct isd200_info *)us->extra;
 992         int retStatus = ISD200_GOOD;
 993         struct hd_driveid *id = info->id;
 994
 995         US_DEBUGP("Entering isd200_get_inquiry_data\n");
 996
 997         /* set default to Master */
 998         info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
 999
1000         /* attempt to manually enumerate this device */
1001         retStatus = isd200_manual_enum(us);
1002         if (retStatus == ISD200_GOOD) {
1003                 int transferStatus;
1004
1005                 /* check for an ATA device */
1006                 if (info->DeviceFlags & DF_ATA_DEVICE) {
1007                         /* this must be an ATA device */
1008                         /* perform an ATA Command Identify */
1009                         transferStatus = isd200_action( us, ACTION_IDENTIFY,
1010                                                         id,
1011                                                         sizeof(struct hd_driveid) );
1012                         if (transferStatus != ISD200_TRANSPORT_GOOD) {
1013                                 /* Error issuing ATA Command Identify */
1014                                 US_DEBUGP("   Error issuing ATA Command Identify\n");
1015                                 retStatus = ISD200_ERROR;
1016                         } else {
1017                                 /* ATA Command Identify successful */
1018                                 int i;
1019                                 __be16 *src;
1020                                 __u16 *dest;
1021                                 ide_fix_driveid(id);
1022
1023                                 US_DEBUGP("   Identify Data Structure:\n");
1024                                 US_DEBUGP("      config = 0x%x\n", id->config);
1025                                 US_DEBUGP("      cyls = 0x%x\n", id->cyls);
1026                                 US_DEBUGP("      heads = 0x%x\n", id->heads);
1027                                 US_DEBUGP("      track_bytes = 0x%x\n", id->track_bytes);
1028                                 US_DEBUGP("      sector_bytes = 0x%x\n", id->sector_bytes);
1029                                 US_DEBUGP("      sectors = 0x%x\n", id->sectors);
1030                                 US_DEBUGP("      serial_no[0] = 0x%x\n", id->serial_no[0]);
1031                                 US_DEBUGP("      buf_type = 0x%x\n", id->buf_type);
1032                                 US_DEBUGP("      buf_size = 0x%x\n", id->buf_size);
1033                                 US_DEBUGP("      ecc_bytes = 0x%x\n", id->ecc_bytes);
1034                                 US_DEBUGP("      fw_rev[0] = 0x%x\n", id->fw_rev[0]);
1035                                 US_DEBUGP("      model[0] = 0x%x\n", id->model[0]);
1036                                 US_DEBUGP("      max_multsect = 0x%x\n", id->max_multsect);
1037                                 US_DEBUGP("      dword_io = 0x%x\n", id->dword_io);
1038                                 US_DEBUGP("      capability = 0x%x\n", id->capability);
1039                                 US_DEBUGP("      tPIO = 0x%x\n", id->tPIO);
1040                                 US_DEBUGP("      tDMA = 0x%x\n", id->tDMA);
1041                                 US_DEBUGP("      field_valid = 0x%x\n", id->field_valid);
1042                                 US_DEBUGP("      cur_cyls = 0x%x\n", id->cur_cyls);
1043                                 US_DEBUGP("      cur_heads = 0x%x\n", id->cur_heads);
1044                                 US_DEBUGP("      cur_sectors = 0x%x\n", id->cur_sectors);
1045                                 US_DEBUGP("      cur_capacity = 0x%x\n", (id->cur_capacity1 << 16) + id->cur_capacity0 );
1046                                 US_DEBUGP("      multsect = 0x%x\n", id->multsect);
1047                                 US_DEBUGP("      lba_capacity = 0x%x\n", id->lba_capacity);
1048                                 US_DEBUGP("      command_set_1 = 0x%x\n", id->command_set_1);
1049                                 US_DEBUGP("      command_set_2 = 0x%x\n", id->command_set_2);
1050
1051                                 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1052
1053                                 /* Standard IDE interface only supports disks */
1054                                 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1055
1056                                 /* The length must be at least 36 (5 + 31) */
1057                                 info->InquiryData.AdditionalLength = 0x1F;
1058
1059                                 if (id->command_set_1 & COMMANDSET_MEDIA_STATUS) {
1060                                         /* set the removable bit */
1061                                         info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1062                                         info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1063                                 }
1064
1065                                 /* Fill in vendor identification fields */
1066                                 src = (__be16*)id->model;
1067                                 dest = (__u16*)info->InquiryData.VendorId;
1068                                 for (i=0;i<4;i++)
1069                                         dest[i] = be16_to_cpu(src[i]);
1070
1071                                 src = (__be16*)(id->model+8);
1072                                 dest = (__u16*)info->InquiryData.ProductId;
1073                                 for (i=0;i<8;i++)
1074                                         dest[i] = be16_to_cpu(src[i]);
1075
1076                                 src = (__be16*)id->fw_rev;
1077                                 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1078                                 for (i=0;i<2;i++)
1079                                         dest[i] = be16_to_cpu(src[i]);
1080
1081                                 /* determine if it supports Media Status Notification */
1082                                 if (id->command_set_2 & COMMANDSET_MEDIA_STATUS) {
1083                                         US_DEBUGP("   Device supports Media Status Notification\n");
1084
1085                                         /* Indicate that it is enabled, even though it is not
1086                                          * This allows the lock/unlock of the media to work
1087                                          * correctly.
1088                                          */
1089                                         info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1090                                 }
1091                                 else
1092                                         info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1093
1094                         }
1095                 } else {
1096                         /*
1097                          * this must be an ATAPI device
1098                          * use an ATAPI protocol (Transparent SCSI)
1099                          */
1100                         us->protocol_name = "Transparent SCSI";
1101                         us->proto_handler = usb_stor_transparent_scsi_command;
1102
1103                         US_DEBUGP("Protocol changed to: %s\n", us->protocol_name);
1104
1105                         /* Free driver structure */
1106                         us->extra_destructor(info);
1107                         us->extra = NULL;
1108                         us->extra_destructor = NULL;
1109                 }
1110         }
1111
1112         US_DEBUGP("Leaving isd200_get_inquiry_data %08X\n", retStatus);
1113
1114         return(retStatus);
1115 }
1116
1117
1118 /**************************************************************************
1119  * isd200_scsi_to_ata
1120  *
1121  * Translate SCSI commands to ATA commands.
1122  *
1123  * RETURNS:
1124  *    1 if the command needs to be sent to the transport layer
1125  *    0 otherwise
1126  */
1127 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1128                               union ata_cdb * ataCdb)
1129 {
1130         struct isd200_info *info = (struct isd200_info *)us->extra;
1131         struct hd_driveid *id = info->id;
1132         int sendToTransport = 1;
1133         unsigned char sectnum, head;
1134         unsigned short cylinder;
1135         unsigned long lba;
1136         unsigned long blockCount;
1137         unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1138
1139         memset(ataCdb, 0, sizeof(union ata_cdb));
1140
1141         /* SCSI Command */
1142         switch (srb->cmnd[0]) {
1143         case INQUIRY:
1144                 US_DEBUGP("   ATA OUT - INQUIRY\n");
1145
1146                 /* copy InquiryData */
1147                 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1148                                 sizeof(info->InquiryData), srb);
1149                 srb->result = SAM_STAT_GOOD;
1150                 sendToTransport = 0;
1151                 break;
1152
1153         case MODE_SENSE:
1154                 US_DEBUGP("   ATA OUT - SCSIOP_MODE_SENSE\n");
1155
1156                 /* Initialize the return buffer */
1157                 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1158
1159                 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1160                 {
1161                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1162                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1163                         ataCdb->generic.TransferBlockSize = 1;
1164                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1165                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1166                         srb->request_bufflen = 0;
1167                 } else {
1168                         US_DEBUGP("   Media Status not supported, just report okay\n");
1169                         srb->result = SAM_STAT_GOOD;
1170                         sendToTransport = 0;
1171                 }
1172                 break;
1173
1174         case TEST_UNIT_READY:
1175                 US_DEBUGP("   ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1176
1177                 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1178                 {
1179                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1180                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1181                         ataCdb->generic.TransferBlockSize = 1;
1182                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1183                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1184                         srb->request_bufflen = 0;
1185                 } else {
1186                         US_DEBUGP("   Media Status not supported, just report okay\n");
1187                         srb->result = SAM_STAT_GOOD;
1188                         sendToTransport = 0;
1189                 }
1190                 break;
1191
1192         case READ_CAPACITY:
1193         {
1194                 unsigned long capacity;
1195                 struct read_capacity_data readCapacityData;
1196
1197                 US_DEBUGP("   ATA OUT - SCSIOP_READ_CAPACITY\n");
1198
1199                 if (id->capability & CAPABILITY_LBA ) {
1200                         capacity = id->lba_capacity - 1;
1201                 } else {
1202                         capacity = (id->heads *
1203                                     id->cyls *
1204                                     id->sectors) - 1;
1205                 }
1206                 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1207                 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1208
1209                 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1210                                 sizeof(readCapacityData), srb);
1211                 srb->result = SAM_STAT_GOOD;
1212                 sendToTransport = 0;
1213         }
1214         break;
1215
1216         case READ_10:
1217                 US_DEBUGP("   ATA OUT - SCSIOP_READ\n");
1218
1219                 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1220                 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1221
1222                 if (id->capability & CAPABILITY_LBA) {
1223                         sectnum = (unsigned char)(lba);
1224                         cylinder = (unsigned short)(lba>>8);
1225                         head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1226                 } else {
1227                         sectnum = (unsigned char)((lba % id->sectors) + 1);
1228                         cylinder = (unsigned short)(lba / (id->sectors *
1229                                                            id->heads));
1230                         head = (unsigned char)((lba / id->sectors) %
1231                                                id->heads);
1232                 }
1233                 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1234                 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1235                 ataCdb->generic.TransferBlockSize = 1;
1236                 ataCdb->generic.RegisterSelect =
1237                   REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1238                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1239                   REG_DEVICE_HEAD  | REG_COMMAND;
1240                 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1241                 ataCdb->write.SectorNumberByte = sectnum;
1242                 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1243                 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1244                 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1245                 ataCdb->write.CommandByte = WIN_READ;
1246                 break;
1247
1248         case WRITE_10:
1249                 US_DEBUGP("   ATA OUT - SCSIOP_WRITE\n");
1250
1251                 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1252                 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1253
1254                 if (id->capability & CAPABILITY_LBA) {
1255                         sectnum = (unsigned char)(lba);
1256                         cylinder = (unsigned short)(lba>>8);
1257                         head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1258                 } else {
1259                         sectnum = (unsigned char)((lba % id->sectors) + 1);
1260                         cylinder = (unsigned short)(lba / (id->sectors * id->heads));
1261                         head = (unsigned char)((lba / id->sectors) % id->heads);
1262                 }
1263                 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1264                 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1265                 ataCdb->generic.TransferBlockSize = 1;
1266                 ataCdb->generic.RegisterSelect =
1267                   REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1268                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1269                   REG_DEVICE_HEAD  | REG_COMMAND;
1270                 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1271                 ataCdb->write.SectorNumberByte = sectnum;
1272                 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1273                 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1274                 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1275                 ataCdb->write.CommandByte = WIN_WRITE;
1276                 break;
1277
1278         case ALLOW_MEDIUM_REMOVAL:
1279                 US_DEBUGP("   ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1280
1281                 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1282                         US_DEBUGP("   srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1283
1284                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1285                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1286                         ataCdb->generic.TransferBlockSize = 1;
1287                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1288                         ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1289                                 WIN_DOORLOCK : WIN_DOORUNLOCK;
1290                         srb->request_bufflen = 0;
1291                 } else {
1292                         US_DEBUGP("   Not removeable media, just report okay\n");
1293                         srb->result = SAM_STAT_GOOD;
1294                         sendToTransport = 0;
1295                 }
1296                 break;
1297
1298         case START_STOP:
1299                 US_DEBUGP("   ATA OUT - SCSIOP_START_STOP_UNIT\n");
1300                 US_DEBUGP("   srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1301
1302                 if ((srb->cmnd[4] & 0x3) == 0x2) {
1303                         US_DEBUGP("   Media Eject\n");
1304                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1305                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1306                         ataCdb->generic.TransferBlockSize = 0;
1307                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1308                         ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1309                 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1310                         US_DEBUGP("   Get Media Status\n");
1311                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1312                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1313                         ataCdb->generic.TransferBlockSize = 1;
1314                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1315                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1316                         srb->request_bufflen = 0;
1317                 } else {
1318                         US_DEBUGP("   Nothing to do, just report okay\n");
1319                         srb->result = SAM_STAT_GOOD;
1320                         sendToTransport = 0;
1321                 }
1322                 break;
1323
1324         default:
1325                 US_DEBUGP("Unsupported SCSI command - 0x%X\n", srb->cmnd[0]);
1326                 srb->result = DID_ERROR << 16;
1327                 sendToTransport = 0;
1328                 break;
1329         }
1330
1331         return(sendToTransport);
1332 }
1333
1334
1335 /**************************************************************************
1336  * isd200_free_info
1337  *
1338  * Frees the driver structure.
1339  */
1340 static void isd200_free_info_ptrs(void *info_)
1341 {
1342         struct isd200_info *info = (struct isd200_info *) info_;
1343
1344         if (info) {
1345                 kfree(info->id);
1346                 kfree(info->RegsBuf);
1347         }
1348 }
1349
1350 /**************************************************************************
1351  * isd200_init_info
1352  *
1353  * Allocates (if necessary) and initializes the driver structure.
1354  *
1355  * RETURNS:
1356  *    ISD status code
1357  */
1358 static int isd200_init_info(struct us_data *us)
1359 {
1360         int retStatus = ISD200_GOOD;
1361         struct isd200_info *info;
1362
1363         info = (struct isd200_info *)
1364                         kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1365         if (!info)
1366                 retStatus = ISD200_ERROR;
1367         else {
1368                 info->id = (struct hd_driveid *)
1369                                 kzalloc(sizeof(struct hd_driveid), GFP_KERNEL);
1370                 info->RegsBuf = (unsigned char *)
1371                                 kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1372                 if (!info->id || !info->RegsBuf) {
1373                         isd200_free_info_ptrs(info);
1374                         kfree(info);
1375                         retStatus = ISD200_ERROR;
1376                 }
1377         }
1378
1379         if (retStatus == ISD200_GOOD) {
1380                 us->extra = info;
1381                 us->extra_destructor = isd200_free_info_ptrs;
1382         } else
1383                 US_DEBUGP("ERROR - kmalloc failure\n");
1384
1385         return retStatus;
1386 }
1387
1388 /**************************************************************************
1389  * Initialization for the ISD200
1390  */
1391
1392 int isd200_Initialization(struct us_data *us)
1393 {
1394         US_DEBUGP("ISD200 Initialization...\n");
1395
1396         /* Initialize ISD200 info struct */
1397
1398         if (isd200_init_info(us) == ISD200_ERROR) {
1399                 US_DEBUGP("ERROR Initializing ISD200 Info struct\n");
1400         } else {
1401                 /* Get device specific data */
1402
1403                 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1404                         US_DEBUGP("ISD200 Initialization Failure\n");
1405                 else
1406                         US_DEBUGP("ISD200 Initialization complete\n");
1407         }
1408
1409         return 0;
1410 }
1411
1412
1413 /**************************************************************************
1414  * Protocol and Transport for the ISD200 ASIC
1415  *
1416  * This protocol and transport are for ATA devices connected to an ISD200
1417  * ASIC.  An ATAPI device that is conected as a slave device will be
1418  * detected in the driver initialization function and the protocol will
1419  * be changed to an ATAPI protocol (Transparent SCSI).
1420  *
1421  */
1422
1423 void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1424 {
1425         int sendToTransport = 1;
1426         union ata_cdb ataCdb;
1427
1428         /* Make sure driver was initialized */
1429
1430         if (us->extra == NULL)
1431                 US_DEBUGP("ERROR Driver not initialized\n");
1432
1433         /* Convert command */
1434         srb->resid = 0;
1435         sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1436
1437         /* send the command to the transport layer */
1438         if (sendToTransport)
1439                 isd200_invoke_transport(us, srb, &ataCdb);
1440 }