drivers/usb/storage/isd200.c

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This source file includes following definitions.
isd200_build_sense
isd200_set_srb
isd200_srb_set_bufflen
isd200_action
isd200_read_regs
isd200_invoke_transport
isd200_log_config
isd200_write_config
isd200_read_config
isd200_atapi_soft_reset
isd200_srst
isd200_try_enum
isd200_manual_enum
isd200_fix_driveid
isd200_dump_driveid
isd200_get_inquiry_data
isd200_scsi_to_ata
isd200_free_info_ptrs
isd200_init_info
isd200_Initialization
isd200_ata_command
isd200_probe
   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
   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  * History:
  19  *
  20  *  2002-10-19: Removed the specialized transfer routines.
  21  *              (Alan Stern <stern@rowland.harvard.edu>)
  22  *  2001-02-24: Removed lots of duplicate code and simplified the structure.
  23  *            (bjorn@haxx.se)
  24  *  2002-01-16: Fixed endianness bug so it works on the ppc arch.
  25  *            (Luc Saillard <luc@saillard.org>)
  26  *  2002-01-17: All bitfields removed.
  27  *            (bjorn@haxx.se)
  28  */
  29 
  30 
  31 /* Include files */
  32 
  33 #include <linux/jiffies.h>
  34 #include <linux/errno.h>
  35 #include <linux/module.h>
  36 #include <linux/slab.h>
  37 #include <linux/ata.h>
  38 #include <linux/hdreg.h>
  39 #include <linux/scatterlist.h>
  40 
  41 #include <scsi/scsi.h>
  42 #include <scsi/scsi_cmnd.h>
  43 #include <scsi/scsi_device.h>
  44 
  45 #include "usb.h"
  46 #include "transport.h"
  47 #include "protocol.h"
  48 #include "debug.h"
  49 #include "scsiglue.h"
  50 
  51 #define DRV_NAME "ums-isd200"
  52 
  53 MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
  54 MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>");
  55 MODULE_LICENSE("GPL");
  56 MODULE_IMPORT_NS(USB_STORAGE);
  57 
  58 static int isd200_Initialization(struct us_data *us);
  59 
  60 
  61 /*
  62  * The table of devices
  63  */
  64 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
  65                     vendorName, productName, useProtocol, useTransport, \
  66                     initFunction, flags) \
  67 { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
  68   .driver_info = (flags) }
  69 
  70 static struct usb_device_id isd200_usb_ids[] = {
  71 #       include "unusual_isd200.h"
  72         { }             /* Terminating entry */
  73 };
  74 MODULE_DEVICE_TABLE(usb, isd200_usb_ids);
  75 
  76 #undef UNUSUAL_DEV
  77 
  78 /*
  79  * The flags table
  80  */
  81 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
  82                     vendor_name, product_name, use_protocol, use_transport, \
  83                     init_function, Flags) \
  84 { \
  85         .vendorName = vendor_name,      \
  86         .productName = product_name,    \
  87         .useProtocol = use_protocol,    \
  88         .useTransport = use_transport,  \
  89         .initFunction = init_function,  \
  90 }
  91 
  92 static struct us_unusual_dev isd200_unusual_dev_list[] = {
  93 #       include "unusual_isd200.h"
  94         { }             /* Terminating entry */
  95 };
  96 
  97 #undef UNUSUAL_DEV
  98 
  99 /* Timeout defines (in Seconds) */
 100 
 101 #define ISD200_ENUM_BSY_TIMEOUT         35
 102 #define ISD200_ENUM_DETECT_TIMEOUT      30
 103 #define ISD200_DEFAULT_TIMEOUT          30
 104 
 105 /* device flags */
 106 #define DF_ATA_DEVICE           0x0001
 107 #define DF_MEDIA_STATUS_ENABLED 0x0002
 108 #define DF_REMOVABLE_MEDIA      0x0004
 109 
 110 /* capability bit definitions */
 111 #define CAPABILITY_DMA          0x01
 112 #define CAPABILITY_LBA          0x02
 113 
 114 /* command_setX bit definitions */
 115 #define COMMANDSET_REMOVABLE    0x02
 116 #define COMMANDSET_MEDIA_STATUS 0x10
 117 
 118 /* ATA Vendor Specific defines */
 119 #define ATA_ADDRESS_DEVHEAD_STD      0xa0
 120 #define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40    
 121 #define ATA_ADDRESS_DEVHEAD_SLAVE    0x10
 122 
 123 /* Action Select bits */
 124 #define ACTION_SELECT_0      0x01
 125 #define ACTION_SELECT_1      0x02
 126 #define ACTION_SELECT_2      0x04
 127 #define ACTION_SELECT_3      0x08
 128 #define ACTION_SELECT_4      0x10
 129 #define ACTION_SELECT_5      0x20
 130 #define ACTION_SELECT_6      0x40
 131 #define ACTION_SELECT_7      0x80
 132 
 133 /* Register Select bits */
 134 #define REG_ALTERNATE_STATUS    0x01
 135 #define REG_DEVICE_CONTROL      0x01
 136 #define REG_ERROR               0x02
 137 #define REG_FEATURES            0x02
 138 #define REG_SECTOR_COUNT        0x04
 139 #define REG_SECTOR_NUMBER       0x08
 140 #define REG_CYLINDER_LOW        0x10
 141 #define REG_CYLINDER_HIGH       0x20
 142 #define REG_DEVICE_HEAD         0x40
 143 #define REG_STATUS              0x80
 144 #define REG_COMMAND             0x80
 145 
 146 /* ATA registers offset definitions */
 147 #define ATA_REG_ERROR_OFFSET            1
 148 #define ATA_REG_LCYL_OFFSET             4
 149 #define ATA_REG_HCYL_OFFSET             5
 150 #define ATA_REG_STATUS_OFFSET           7
 151 
 152 /* ATA error definitions not in <linux/hdreg.h> */
 153 #define ATA_ERROR_MEDIA_CHANGE          0x20
 154 
 155 /* ATA command definitions not in <linux/hdreg.h> */
 156 #define ATA_COMMAND_GET_MEDIA_STATUS    0xDA
 157 #define ATA_COMMAND_MEDIA_EJECT         0xED
 158 
 159 /* ATA drive control definitions */
 160 #define ATA_DC_DISABLE_INTERRUPTS       0x02
 161 #define ATA_DC_RESET_CONTROLLER         0x04
 162 #define ATA_DC_REENABLE_CONTROLLER      0x00
 163 
 164 /*
 165  *  General purpose return codes
 166  */ 
 167 
 168 #define ISD200_ERROR            -1
 169 #define ISD200_GOOD              0
 170 
 171 /*
 172  * Transport return codes
 173  */
 174 
 175 #define ISD200_TRANSPORT_GOOD       0   /* Transport good, command good     */
 176 #define ISD200_TRANSPORT_FAILED     1   /* Transport good, command failed   */
 177 #define ISD200_TRANSPORT_ERROR      2   /* Transport bad (i.e. device dead) */
 178 
 179 /* driver action codes */
 180 #define ACTION_READ_STATUS      0
 181 #define ACTION_RESET            1
 182 #define ACTION_REENABLE         2
 183 #define ACTION_SOFT_RESET       3
 184 #define ACTION_ENUM             4
 185 #define ACTION_IDENTIFY         5
 186 
 187 
 188 /*
 189  * ata_cdb struct
 190  */
 191 
 192 
 193 union ata_cdb {
 194         struct {
 195                 unsigned char SignatureByte0;
 196                 unsigned char SignatureByte1;
 197                 unsigned char ActionSelect;
 198                 unsigned char RegisterSelect;
 199                 unsigned char TransferBlockSize;
 200                 unsigned char WriteData3F6;
 201                 unsigned char WriteData1F1;
 202                 unsigned char WriteData1F2;
 203                 unsigned char WriteData1F3;
 204                 unsigned char WriteData1F4;
 205                 unsigned char WriteData1F5;
 206                 unsigned char WriteData1F6;
 207                 unsigned char WriteData1F7;
 208                 unsigned char Reserved[3];
 209         } generic;
 210 
 211         struct {
 212                 unsigned char SignatureByte0;
 213                 unsigned char SignatureByte1;
 214                 unsigned char ActionSelect;
 215                 unsigned char RegisterSelect;
 216                 unsigned char TransferBlockSize;
 217                 unsigned char AlternateStatusByte;
 218                 unsigned char ErrorByte;
 219                 unsigned char SectorCountByte;
 220                 unsigned char SectorNumberByte;
 221                 unsigned char CylinderLowByte;
 222                 unsigned char CylinderHighByte;
 223                 unsigned char DeviceHeadByte;
 224                 unsigned char StatusByte;
 225                 unsigned char Reserved[3];
 226         } read;
 227 
 228         struct {
 229                 unsigned char SignatureByte0;
 230                 unsigned char SignatureByte1;
 231                 unsigned char ActionSelect;
 232                 unsigned char RegisterSelect;
 233                 unsigned char TransferBlockSize;
 234                 unsigned char DeviceControlByte;
 235                 unsigned char FeaturesByte;
 236                 unsigned char SectorCountByte;
 237                 unsigned char SectorNumberByte;
 238                 unsigned char CylinderLowByte;
 239                 unsigned char CylinderHighByte;
 240                 unsigned char DeviceHeadByte;
 241                 unsigned char CommandByte;
 242                 unsigned char Reserved[3];
 243         } write;
 244 };
 245 
 246 
 247 /*
 248  * Inquiry data structure. This is the data returned from the target
 249  * after it receives an inquiry.
 250  *
 251  * This structure may be extended by the number of bytes specified
 252  * in the field AdditionalLength. The defined size constant only
 253  * includes fields through ProductRevisionLevel.
 254  */
 255 
 256 /*
 257  * DeviceType field
 258  */
 259 #define DIRECT_ACCESS_DEVICE        0x00    /* disks */
 260 #define DEVICE_REMOVABLE                0x80
 261 
 262 struct inquiry_data {
 263         unsigned char DeviceType;
 264         unsigned char DeviceTypeModifier;
 265         unsigned char Versions;
 266         unsigned char Format; 
 267         unsigned char AdditionalLength;
 268         unsigned char Reserved[2];
 269         unsigned char Capability;
 270         unsigned char VendorId[8];
 271         unsigned char ProductId[16];
 272         unsigned char ProductRevisionLevel[4];
 273         unsigned char VendorSpecific[20];
 274         unsigned char Reserved3[40];
 275 } __attribute__ ((packed));
 276 
 277 /*
 278  * INQUIRY data buffer size
 279  */
 280 
 281 #define INQUIRYDATABUFFERSIZE 36
 282 
 283 
 284 /*
 285  * ISD200 CONFIG data struct
 286  */
 287 
 288 #define ATACFG_TIMING     0x0f
 289 #define ATACFG_ATAPI_RESET     0x10
 290 #define ATACFG_MASTER     0x20
 291 #define ATACFG_BLOCKSIZE       0xa0
 292 
 293 #define ATACFGE_LAST_LUN       0x07
 294 #define ATACFGE_DESC_OVERRIDE  0x08
 295 #define ATACFGE_STATE_SUSPEND  0x10
 296 #define ATACFGE_SKIP_BOOT      0x20
 297 #define ATACFGE_CONF_DESC2     0x40
 298 #define ATACFGE_INIT_STATUS    0x80
 299 
 300 #define CFG_CAPABILITY_SRST    0x01
 301 
 302 struct isd200_config {
 303         unsigned char EventNotification;
 304         unsigned char ExternalClock;
 305         unsigned char ATAInitTimeout;
 306         unsigned char ATAConfig;
 307         unsigned char ATAMajorCommand;
 308         unsigned char ATAMinorCommand;
 309         unsigned char ATAExtraConfig;
 310         unsigned char Capability;
 311 }__attribute__ ((packed));
 312 
 313 
 314 /*
 315  * ISD200 driver information struct
 316  */
 317 
 318 struct isd200_info {
 319         struct inquiry_data InquiryData;
 320         u16 *id;
 321         struct isd200_config ConfigData;
 322         unsigned char *RegsBuf;
 323         unsigned char ATARegs[8];
 324         unsigned char DeviceHead;
 325         unsigned char DeviceFlags;
 326 
 327         /* maximum number of LUNs supported */
 328         unsigned char MaxLUNs;
 329         unsigned char cmnd[BLK_MAX_CDB];
 330         struct scsi_cmnd srb;
 331         struct scatterlist sg;
 332 };
 333 
 334 
 335 /*
 336  * Read Capacity Data - returned in Big Endian format
 337  */
 338 
 339 struct read_capacity_data {
 340         __be32 LogicalBlockAddress;
 341         __be32 BytesPerBlock;
 342 };
 343 
 344 /*
 345  * Read Block Limits Data - returned in Big Endian format
 346  * This structure returns the maximum and minimum block
 347  * size for a TAPE device.
 348  */
 349 
 350 struct read_block_limits {
 351         unsigned char Reserved;
 352         unsigned char BlockMaximumSize[3];
 353         unsigned char BlockMinimumSize[2];
 354 };
 355 
 356 
 357 /*
 358  * Sense Data Format
 359  */
 360 
 361 #define SENSE_ERRCODE      0x7f
 362 #define SENSE_ERRCODE_VALID     0x80
 363 #define SENSE_FLAG_SENSE_KEY    0x0f
 364 #define SENSE_FLAG_BAD_LENGTH   0x20
 365 #define SENSE_FLAG_END_OF_MEDIA 0x40
 366 #define SENSE_FLAG_FILE_MARK    0x80
 367 struct sense_data {
 368         unsigned char ErrorCode;
 369         unsigned char SegmentNumber;
 370         unsigned char Flags;
 371         unsigned char Information[4];
 372         unsigned char AdditionalSenseLength;
 373         unsigned char CommandSpecificInformation[4];
 374         unsigned char AdditionalSenseCode;
 375         unsigned char AdditionalSenseCodeQualifier;
 376         unsigned char FieldReplaceableUnitCode;
 377         unsigned char SenseKeySpecific[3];
 378 } __attribute__ ((packed));
 379 
 380 /*
 381  * Default request sense buffer size
 382  */
 383 
 384 #define SENSE_BUFFER_SIZE 18
 385 
 386 /***********************************************************************
 387  * Helper routines
 388  ***********************************************************************/
 389 
 390 /**************************************************************************
 391  * isd200_build_sense
 392  *                                                                       
 393  *  Builds an artificial sense buffer to report the results of a 
 394  *  failed command.
 395  *                                                                     
 396  * RETURNS:
 397  *    void
 398  */
 399 static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
 400 {
 401         struct isd200_info *info = (struct isd200_info *)us->extra;
 402         struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
 403         unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET];
 404 
 405         if(error & ATA_ERROR_MEDIA_CHANGE) {
 406                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 407                 buf->AdditionalSenseLength = 0xb;
 408                 buf->Flags = UNIT_ATTENTION;
 409                 buf->AdditionalSenseCode = 0;
 410                 buf->AdditionalSenseCodeQualifier = 0;
 411         } else if (error & ATA_MCR) {
 412                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 413                 buf->AdditionalSenseLength = 0xb;
 414                 buf->Flags =  UNIT_ATTENTION;
 415                 buf->AdditionalSenseCode = 0;
 416                 buf->AdditionalSenseCodeQualifier = 0;
 417         } else if (error & ATA_TRK0NF) {
 418                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 419                 buf->AdditionalSenseLength = 0xb;
 420                 buf->Flags =  NOT_READY;
 421                 buf->AdditionalSenseCode = 0;
 422                 buf->AdditionalSenseCodeQualifier = 0;
 423         } else if (error & ATA_UNC) {
 424                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 425                 buf->AdditionalSenseLength = 0xb;
 426                 buf->Flags =  DATA_PROTECT;
 427                 buf->AdditionalSenseCode = 0;
 428                 buf->AdditionalSenseCodeQualifier = 0;
 429         } else {
 430                 buf->ErrorCode = 0;
 431                 buf->AdditionalSenseLength = 0;
 432                 buf->Flags =  0;
 433                 buf->AdditionalSenseCode = 0;
 434                 buf->AdditionalSenseCodeQualifier = 0;
 435         }
 436 }
 437 
 438 
 439 /***********************************************************************
 440  * Transport routines
 441  ***********************************************************************/
 442 
 443 /**************************************************************************
 444  *  isd200_set_srb(), isd200_srb_set_bufflen()
 445  *
 446  * Two helpers to facilitate in initialization of scsi_cmnd structure
 447  * Will need to change when struct scsi_cmnd changes
 448  */
 449 static void isd200_set_srb(struct isd200_info *info,
 450         enum dma_data_direction dir, void* buff, unsigned bufflen)
 451 {
 452         struct scsi_cmnd *srb = &info->srb;
 453 
 454         if (buff)
 455                 sg_init_one(&info->sg, buff, bufflen);
 456 
 457         srb->sc_data_direction = dir;
 458         srb->sdb.table.sgl = buff ? &info->sg : NULL;
 459         srb->sdb.length = bufflen;
 460         srb->sdb.table.nents = buff ? 1 : 0;
 461 }
 462 
 463 static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen)
 464 {
 465         srb->sdb.length = bufflen;
 466 }
 467 
 468 
 469 /**************************************************************************
 470  *  isd200_action
 471  *
 472  * Routine for sending commands to the isd200
 473  *
 474  * RETURNS:
 475  *    ISD status code
 476  */
 477 static int isd200_action( struct us_data *us, int action, 
 478                           void* pointer, int value )
 479 {
 480         union ata_cdb ata;
 481         /* static to prevent this large struct being placed on the valuable stack */
 482         static struct scsi_device srb_dev;
 483         struct isd200_info *info = (struct isd200_info *)us->extra;
 484         struct scsi_cmnd *srb = &info->srb;
 485         int status;
 486 
 487         memset(&ata, 0, sizeof(ata));
 488         srb->cmnd = info->cmnd;
 489         srb->device = &srb_dev;
 490 
 491         ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
 492         ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
 493         ata.generic.TransferBlockSize = 1;
 494 
 495         switch ( action ) {
 496         case ACTION_READ_STATUS:
 497                 usb_stor_dbg(us, "   isd200_action(READ_STATUS)\n");
 498                 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
 499                 ata.generic.RegisterSelect =
 500                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
 501                   REG_STATUS | REG_ERROR;
 502                 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
 503                 break;
 504 
 505         case ACTION_ENUM:
 506                 usb_stor_dbg(us, "   isd200_action(ENUM,0x%02x)\n", value);
 507                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 508                                            ACTION_SELECT_3|ACTION_SELECT_4|
 509                                            ACTION_SELECT_5;
 510                 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
 511                 ata.write.DeviceHeadByte = value;
 512                 isd200_set_srb(info, DMA_NONE, NULL, 0);
 513                 break;
 514 
 515         case ACTION_RESET:
 516                 usb_stor_dbg(us, "   isd200_action(RESET)\n");
 517                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 518                                            ACTION_SELECT_3|ACTION_SELECT_4;
 519                 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
 520                 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
 521                 isd200_set_srb(info, DMA_NONE, NULL, 0);
 522                 break;
 523 
 524         case ACTION_REENABLE:
 525                 usb_stor_dbg(us, "   isd200_action(REENABLE)\n");
 526                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 527                                            ACTION_SELECT_3|ACTION_SELECT_4;
 528                 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
 529                 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
 530                 isd200_set_srb(info, DMA_NONE, NULL, 0);
 531                 break;
 532 
 533         case ACTION_SOFT_RESET:
 534                 usb_stor_dbg(us, "   isd200_action(SOFT_RESET)\n");
 535                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
 536                 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
 537                 ata.write.DeviceHeadByte = info->DeviceHead;
 538                 ata.write.CommandByte = ATA_CMD_DEV_RESET;
 539                 isd200_set_srb(info, DMA_NONE, NULL, 0);
 540                 break;
 541 
 542         case ACTION_IDENTIFY:
 543                 usb_stor_dbg(us, "   isd200_action(IDENTIFY)\n");
 544                 ata.generic.RegisterSelect = REG_COMMAND;
 545                 ata.write.CommandByte = ATA_CMD_ID_ATA;
 546                 isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
 547                                 ATA_ID_WORDS * 2);
 548                 break;
 549 
 550         default:
 551                 usb_stor_dbg(us, "Error: Undefined action %d\n", action);
 552                 return ISD200_ERROR;
 553         }
 554 
 555         memcpy(srb->cmnd, &ata, sizeof(ata.generic));
 556         srb->cmd_len = sizeof(ata.generic);
 557         status = usb_stor_Bulk_transport(srb, us);
 558         if (status == USB_STOR_TRANSPORT_GOOD)
 559                 status = ISD200_GOOD;
 560         else {
 561                 usb_stor_dbg(us, "   isd200_action(0x%02x) error: %d\n",
 562                              action, status);
 563                 status = ISD200_ERROR;
 564                 /* need to reset device here */
 565         }
 566 
 567         return status;
 568 }
 569 
 570 /**************************************************************************
 571  * isd200_read_regs
 572  *                                                                       
 573  * Read ATA Registers
 574  *
 575  * RETURNS:
 576  *    ISD status code
 577  */
 578 static int isd200_read_regs( struct us_data *us )
 579 {
 580         struct isd200_info *info = (struct isd200_info *)us->extra;
 581         int retStatus = ISD200_GOOD;
 582         int transferStatus;
 583 
 584         usb_stor_dbg(us, "Entering isd200_IssueATAReadRegs\n");
 585 
 586         transferStatus = isd200_action( us, ACTION_READ_STATUS,
 587                                     info->RegsBuf, sizeof(info->ATARegs) );
 588         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 589                 usb_stor_dbg(us, "   Error reading ATA registers\n");
 590                 retStatus = ISD200_ERROR;
 591         } else {
 592                 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
 593                 usb_stor_dbg(us, "   Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n",
 594                              info->ATARegs[ATA_REG_ERROR_OFFSET]);
 595         }
 596 
 597         return retStatus;
 598 }
 599 
 600 
 601 /**************************************************************************
 602  * Invoke the transport and basic error-handling/recovery methods
 603  *
 604  * This is used by the protocol layers to actually send the message to
 605  * the device and receive the response.
 606  */
 607 static void isd200_invoke_transport( struct us_data *us, 
 608                               struct scsi_cmnd *srb, 
 609                               union ata_cdb *ataCdb )
 610 {
 611         int need_auto_sense = 0;
 612         int transferStatus;
 613         int result;
 614 
 615         /* send the command to the transport layer */
 616         memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
 617         srb->cmd_len = sizeof(ataCdb->generic);
 618         transferStatus = usb_stor_Bulk_transport(srb, us);
 619 
 620         /*
 621          * if the command gets aborted by the higher layers, we need to
 622          * short-circuit all other processing
 623          */
 624         if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
 625                 usb_stor_dbg(us, "-- command was aborted\n");
 626                 goto Handle_Abort;
 627         }
 628 
 629         switch (transferStatus) {
 630 
 631         case USB_STOR_TRANSPORT_GOOD:
 632                 /* Indicate a good result */
 633                 srb->result = SAM_STAT_GOOD;
 634                 break;
 635 
 636         case USB_STOR_TRANSPORT_NO_SENSE:
 637                 usb_stor_dbg(us, "-- transport indicates protocol failure\n");
 638                 srb->result = SAM_STAT_CHECK_CONDITION;
 639                 return;
 640 
 641         case USB_STOR_TRANSPORT_FAILED:
 642                 usb_stor_dbg(us, "-- transport indicates command failure\n");
 643                 need_auto_sense = 1;
 644                 break;
 645 
 646         case USB_STOR_TRANSPORT_ERROR:
 647                 usb_stor_dbg(us, "-- transport indicates transport error\n");
 648                 srb->result = DID_ERROR << 16;
 649                 /* Need reset here */
 650                 return;
 651     
 652         default:
 653                 usb_stor_dbg(us, "-- transport indicates unknown error\n");
 654                 srb->result = DID_ERROR << 16;
 655                 /* Need reset here */
 656                 return;
 657         }
 658 
 659         if ((scsi_get_resid(srb) > 0) &&
 660             !((srb->cmnd[0] == REQUEST_SENSE) ||
 661               (srb->cmnd[0] == INQUIRY) ||
 662               (srb->cmnd[0] == MODE_SENSE) ||
 663               (srb->cmnd[0] == LOG_SENSE) ||
 664               (srb->cmnd[0] == MODE_SENSE_10))) {
 665                 usb_stor_dbg(us, "-- unexpectedly short transfer\n");
 666                 need_auto_sense = 1;
 667         }
 668 
 669         if (need_auto_sense) {
 670                 result = isd200_read_regs(us);
 671                 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
 672                         usb_stor_dbg(us, "-- auto-sense aborted\n");
 673                         goto Handle_Abort;
 674                 }
 675                 if (result == ISD200_GOOD) {
 676                         isd200_build_sense(us, srb);
 677                         srb->result = SAM_STAT_CHECK_CONDITION;
 678 
 679                         /* If things are really okay, then let's show that */
 680                         if ((srb->sense_buffer[2] & 0xf) == 0x0)
 681                                 srb->result = SAM_STAT_GOOD;
 682                 } else {
 683                         srb->result = DID_ERROR << 16;
 684                         /* Need reset here */
 685                 }
 686         }
 687 
 688         /*
 689          * Regardless of auto-sense, if we _know_ we have an error
 690          * condition, show that in the result code
 691          */
 692         if (transferStatus == USB_STOR_TRANSPORT_FAILED)
 693                 srb->result = SAM_STAT_CHECK_CONDITION;
 694         return;
 695 
 696         /*
 697          * abort processing: the bulk-only transport requires a reset
 698          * following an abort
 699          */
 700         Handle_Abort:
 701         srb->result = DID_ABORT << 16;
 702 
 703         /* permit the reset transfer to take place */
 704         clear_bit(US_FLIDX_ABORTING, &us->dflags);
 705         /* Need reset here */
 706 }
 707 
 708 #ifdef CONFIG_USB_STORAGE_DEBUG
 709 static void isd200_log_config(struct us_data *us, struct isd200_info *info)
 710 {
 711         usb_stor_dbg(us, "      Event Notification: 0x%x\n",
 712                      info->ConfigData.EventNotification);
 713         usb_stor_dbg(us, "      External Clock: 0x%x\n",
 714                      info->ConfigData.ExternalClock);
 715         usb_stor_dbg(us, "      ATA Init Timeout: 0x%x\n",
 716                      info->ConfigData.ATAInitTimeout);
 717         usb_stor_dbg(us, "      ATAPI Command Block Size: 0x%x\n",
 718                      (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
 719         usb_stor_dbg(us, "      Master/Slave Selection: 0x%x\n",
 720                      info->ConfigData.ATAConfig & ATACFG_MASTER);
 721         usb_stor_dbg(us, "      ATAPI Reset: 0x%x\n",
 722                      info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
 723         usb_stor_dbg(us, "      ATA Timing: 0x%x\n",
 724                      info->ConfigData.ATAConfig & ATACFG_TIMING);
 725         usb_stor_dbg(us, "      ATA Major Command: 0x%x\n",
 726                      info->ConfigData.ATAMajorCommand);
 727         usb_stor_dbg(us, "      ATA Minor Command: 0x%x\n",
 728                      info->ConfigData.ATAMinorCommand);
 729         usb_stor_dbg(us, "      Init Status: 0x%x\n",
 730                      info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
 731         usb_stor_dbg(us, "      Config Descriptor 2: 0x%x\n",
 732                      info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
 733         usb_stor_dbg(us, "      Skip Device Boot: 0x%x\n",
 734                      info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
 735         usb_stor_dbg(us, "      ATA 3 State Suspend: 0x%x\n",
 736                      info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
 737         usb_stor_dbg(us, "      Descriptor Override: 0x%x\n",
 738                      info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
 739         usb_stor_dbg(us, "      Last LUN Identifier: 0x%x\n",
 740                      info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
 741         usb_stor_dbg(us, "      SRST Enable: 0x%x\n",
 742                      info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
 743 }
 744 #endif
 745 
 746 /**************************************************************************
 747  * isd200_write_config
 748  *                                                                       
 749  * Write the ISD200 Configuration data
 750  *
 751  * RETURNS:
 752  *    ISD status code
 753  */
 754 static int isd200_write_config( struct us_data *us ) 
 755 {
 756         struct isd200_info *info = (struct isd200_info *)us->extra;
 757         int retStatus = ISD200_GOOD;
 758         int result;
 759 
 760 #ifdef CONFIG_USB_STORAGE_DEBUG
 761         usb_stor_dbg(us, "Entering isd200_write_config\n");
 762         usb_stor_dbg(us, "   Writing the following ISD200 Config Data:\n");
 763         isd200_log_config(us, info);
 764 #endif
 765 
 766         /* let's send the command via the control pipe */
 767         result = usb_stor_ctrl_transfer(
 768                 us, 
 769                 us->send_ctrl_pipe,
 770                 0x01, 
 771                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 772                 0x0000, 
 773                 0x0002, 
 774                 (void *) &info->ConfigData, 
 775                 sizeof(info->ConfigData));
 776 
 777         if (result >= 0) {
 778                 usb_stor_dbg(us, "   ISD200 Config Data was written successfully\n");
 779         } else {
 780                 usb_stor_dbg(us, "   Request to write ISD200 Config Data failed!\n");
 781                 retStatus = ISD200_ERROR;
 782         }
 783 
 784         usb_stor_dbg(us, "Leaving isd200_write_config %08X\n", retStatus);
 785         return retStatus;
 786 }
 787 
 788 
 789 /**************************************************************************
 790  * isd200_read_config
 791  *                                                                       
 792  * Reads the ISD200 Configuration data
 793  *
 794  * RETURNS:
 795  *    ISD status code
 796  */
 797 static int isd200_read_config( struct us_data *us ) 
 798 {
 799         struct isd200_info *info = (struct isd200_info *)us->extra;
 800         int retStatus = ISD200_GOOD;
 801         int result;
 802 
 803         usb_stor_dbg(us, "Entering isd200_read_config\n");
 804 
 805         /* read the configuration information from ISD200.  Use this to */
 806         /* determine what the special ATA CDB bytes are.                */
 807 
 808         result = usb_stor_ctrl_transfer(
 809                 us, 
 810                 us->recv_ctrl_pipe,
 811                 0x02, 
 812                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 813                 0x0000, 
 814                 0x0002, 
 815                 (void *) &info->ConfigData, 
 816                 sizeof(info->ConfigData));
 817 
 818 
 819         if (result >= 0) {
 820                 usb_stor_dbg(us, "   Retrieved the following ISD200 Config Data:\n");
 821 #ifdef CONFIG_USB_STORAGE_DEBUG
 822                 isd200_log_config(us, info);
 823 #endif
 824         } else {
 825                 usb_stor_dbg(us, "   Request to get ISD200 Config Data failed!\n");
 826                 retStatus = ISD200_ERROR;
 827         }
 828 
 829         usb_stor_dbg(us, "Leaving isd200_read_config %08X\n", retStatus);
 830         return retStatus;
 831 }
 832 
 833 
 834 /**************************************************************************
 835  * isd200_atapi_soft_reset
 836  *                                                                       
 837  * Perform an Atapi Soft Reset on the device
 838  *
 839  * RETURNS:
 840  *    NT status code
 841  */
 842 static int isd200_atapi_soft_reset( struct us_data *us ) 
 843 {
 844         int retStatus = ISD200_GOOD;
 845         int transferStatus;
 846 
 847         usb_stor_dbg(us, "Entering isd200_atapi_soft_reset\n");
 848 
 849         transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
 850         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 851                 usb_stor_dbg(us, "   Error issuing Atapi Soft Reset\n");
 852                 retStatus = ISD200_ERROR;
 853         }
 854 
 855         usb_stor_dbg(us, "Leaving isd200_atapi_soft_reset %08X\n", retStatus);
 856         return retStatus;
 857 }
 858 
 859 
 860 /**************************************************************************
 861  * isd200_srst
 862  *                                                                       
 863  * Perform an SRST on the device
 864  *
 865  * RETURNS:
 866  *    ISD status code
 867  */
 868 static int isd200_srst( struct us_data *us ) 
 869 {
 870         int retStatus = ISD200_GOOD;
 871         int transferStatus;
 872 
 873         usb_stor_dbg(us, "Entering isd200_SRST\n");
 874 
 875         transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
 876 
 877         /* check to see if this request failed */
 878         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 879                 usb_stor_dbg(us, "   Error issuing SRST\n");
 880                 retStatus = ISD200_ERROR;
 881         } else {
 882                 /* delay 10ms to give the drive a chance to see it */
 883                 msleep(10);
 884 
 885                 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
 886                 if (transferStatus != ISD200_TRANSPORT_GOOD) {
 887                         usb_stor_dbg(us, "   Error taking drive out of reset\n");
 888                         retStatus = ISD200_ERROR;
 889                 } else {
 890                         /* delay 50ms to give the drive a chance to recover after SRST */
 891                         msleep(50);
 892                 }
 893         }
 894 
 895         usb_stor_dbg(us, "Leaving isd200_srst %08X\n", retStatus);
 896         return retStatus;
 897 }
 898 
 899 
 900 /**************************************************************************
 901  * isd200_try_enum
 902  *                                                                       
 903  * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
 904  * and tries to analyze the status registers
 905  *
 906  * RETURNS:
 907  *    ISD status code
 908  */
 909 static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
 910                            int detect )
 911 {
 912         int status = ISD200_GOOD;
 913         unsigned long endTime;
 914         struct isd200_info *info = (struct isd200_info *)us->extra;
 915         unsigned char *regs = info->RegsBuf;
 916         int recheckAsMaster = 0;
 917 
 918         if ( detect )
 919                 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
 920         else
 921                 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
 922 
 923         /* loop until we detect !BSY or timeout */
 924         while(1) {
 925 
 926                 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
 927                 if ( status != ISD200_GOOD )
 928                         break;
 929 
 930                 status = isd200_action( us, ACTION_READ_STATUS, 
 931                                         regs, 8 );
 932                 if ( status != ISD200_GOOD )
 933                         break;
 934 
 935                 if (!detect) {
 936                         if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) {
 937                                 usb_stor_dbg(us, "   %s status is still BSY, try again...\n",
 938                                              master_slave == ATA_ADDRESS_DEVHEAD_STD ?
 939                                              "Master" : "Slave");
 940                         } else {
 941                                 usb_stor_dbg(us, "   %s status !BSY, continue with next operation\n",
 942                                              master_slave == ATA_ADDRESS_DEVHEAD_STD ?
 943                                              "Master" : "Slave");
 944                                 break;
 945                         }
 946                 }
 947                 /* check for ATA_BUSY and */
 948                 /* ATA_DF (workaround ATA Zip drive) and */
 949                 /* ATA_ERR (workaround for Archos CD-ROM) */
 950                 else if (regs[ATA_REG_STATUS_OFFSET] &
 951                          (ATA_BUSY | ATA_DF | ATA_ERR)) {
 952                         usb_stor_dbg(us, "   Status indicates it is not ready, try again...\n");
 953                 }
 954                 /* check for DRDY, ATA devices set DRDY after SRST */
 955                 else if (regs[ATA_REG_STATUS_OFFSET] & ATA_DRDY) {
 956                         usb_stor_dbg(us, "   Identified ATA device\n");
 957                         info->DeviceFlags |= DF_ATA_DEVICE;
 958                         info->DeviceHead = master_slave;
 959                         break;
 960                 } 
 961                 /*
 962                  * check Cylinder High/Low to
 963                  * determine if it is an ATAPI device
 964                  */
 965                 else if (regs[ATA_REG_HCYL_OFFSET] == 0xEB &&
 966                          regs[ATA_REG_LCYL_OFFSET] == 0x14) {
 967                         /*
 968                          * It seems that the RICOH
 969                          * MP6200A CD/RW drive will
 970                          * report itself okay as a
 971                          * slave when it is really a
 972                          * master. So this check again
 973                          * as a master device just to
 974                          * make sure it doesn't report
 975                          * itself okay as a master also
 976                          */
 977                         if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
 978                             !recheckAsMaster) {
 979                                 usb_stor_dbg(us, "   Identified ATAPI device as slave.  Rechecking again as master\n");
 980                                 recheckAsMaster = 1;
 981                                 master_slave = ATA_ADDRESS_DEVHEAD_STD;
 982                         } else {
 983                                 usb_stor_dbg(us, "   Identified ATAPI device\n");
 984                                 info->DeviceHead = master_slave;
 985                               
 986                                 status = isd200_atapi_soft_reset(us);
 987                                 break;
 988                         }
 989                 } else {
 990                         usb_stor_dbg(us, "   Not ATA, not ATAPI - Weird\n");
 991                         break;
 992                 }
 993 
 994                 /* check for timeout on this request */
 995                 if (time_after_eq(jiffies, endTime)) {
 996                         if (!detect)
 997                                 usb_stor_dbg(us, "   BSY check timeout, just continue with next operation...\n");
 998                         else
 999                                 usb_stor_dbg(us, "   Device detect timeout!\n");
1000                         break;
1001                 }
1002         }
1003 
1004         return status;
1005 }
1006 
1007 /**************************************************************************
1008  * isd200_manual_enum
1009  *                                                                       
1010  * Determines if the drive attached is an ATA or ATAPI and if it is a
1011  * master or slave.
1012  *
1013  * RETURNS:
1014  *    ISD status code
1015  */
1016 static int isd200_manual_enum(struct us_data *us)
1017 {
1018         struct isd200_info *info = (struct isd200_info *)us->extra;
1019         int retStatus = ISD200_GOOD;
1020 
1021         usb_stor_dbg(us, "Entering isd200_manual_enum\n");
1022 
1023         retStatus = isd200_read_config(us);
1024         if (retStatus == ISD200_GOOD) {
1025                 int isslave;
1026                 /* master or slave? */
1027                 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
1028                 if (retStatus == ISD200_GOOD)
1029                         retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
1030 
1031                 if (retStatus == ISD200_GOOD) {
1032                         retStatus = isd200_srst(us);
1033                         if (retStatus == ISD200_GOOD)
1034                                 /* ata or atapi? */
1035                                 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
1036                 }
1037 
1038                 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
1039                 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
1040                         usb_stor_dbg(us, "   Setting Master/Slave selection to %d\n",
1041                                      isslave);
1042                         info->ConfigData.ATAConfig &= 0x3f;
1043                         info->ConfigData.ATAConfig |= (isslave<<6);
1044                         retStatus = isd200_write_config(us);
1045                 }
1046         }
1047 
1048         usb_stor_dbg(us, "Leaving isd200_manual_enum %08X\n", retStatus);
1049         return(retStatus);
1050 }
1051 
1052 static void isd200_fix_driveid(u16 *id)
1053 {
1054 #ifndef __LITTLE_ENDIAN
1055 # ifdef __BIG_ENDIAN
1056         int i;
1057 
1058         for (i = 0; i < ATA_ID_WORDS; i++)
1059                 id[i] = __le16_to_cpu(id[i]);
1060 # else
1061 #  error "Please fix <asm/byteorder.h>"
1062 # endif
1063 #endif
1064 }
1065 
1066 static void isd200_dump_driveid(struct us_data *us, u16 *id)
1067 {
1068         usb_stor_dbg(us, "   Identify Data Structure:\n");
1069         usb_stor_dbg(us, "      config = 0x%x\n",       id[ATA_ID_CONFIG]);
1070         usb_stor_dbg(us, "      cyls = 0x%x\n",         id[ATA_ID_CYLS]);
1071         usb_stor_dbg(us, "      heads = 0x%x\n",        id[ATA_ID_HEADS]);
1072         usb_stor_dbg(us, "      track_bytes = 0x%x\n",  id[4]);
1073         usb_stor_dbg(us, "      sector_bytes = 0x%x\n", id[5]);
1074         usb_stor_dbg(us, "      sectors = 0x%x\n",      id[ATA_ID_SECTORS]);
1075         usb_stor_dbg(us, "      serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]);
1076         usb_stor_dbg(us, "      buf_type = 0x%x\n",     id[20]);
1077         usb_stor_dbg(us, "      buf_size = 0x%x\n",     id[ATA_ID_BUF_SIZE]);
1078         usb_stor_dbg(us, "      ecc_bytes = 0x%x\n",    id[22]);
1079         usb_stor_dbg(us, "      fw_rev[0] = 0x%x\n",    *(char *)&id[ATA_ID_FW_REV]);
1080         usb_stor_dbg(us, "      model[0] = 0x%x\n",     *(char *)&id[ATA_ID_PROD]);
1081         usb_stor_dbg(us, "      max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff);
1082         usb_stor_dbg(us, "      dword_io = 0x%x\n",     id[ATA_ID_DWORD_IO]);
1083         usb_stor_dbg(us, "      capability = 0x%x\n",   id[ATA_ID_CAPABILITY] >> 8);
1084         usb_stor_dbg(us, "      tPIO = 0x%x\n",   id[ATA_ID_OLD_PIO_MODES] >> 8);
1085         usb_stor_dbg(us, "      tDMA = 0x%x\n",   id[ATA_ID_OLD_DMA_MODES] >> 8);
1086         usb_stor_dbg(us, "      field_valid = 0x%x\n",  id[ATA_ID_FIELD_VALID]);
1087         usb_stor_dbg(us, "      cur_cyls = 0x%x\n",     id[ATA_ID_CUR_CYLS]);
1088         usb_stor_dbg(us, "      cur_heads = 0x%x\n",    id[ATA_ID_CUR_HEADS]);
1089         usb_stor_dbg(us, "      cur_sectors = 0x%x\n",  id[ATA_ID_CUR_SECTORS]);
1090         usb_stor_dbg(us, "      cur_capacity = 0x%x\n", ata_id_u32(id, 57));
1091         usb_stor_dbg(us, "      multsect = 0x%x\n",     id[ATA_ID_MULTSECT] & 0xff);
1092         usb_stor_dbg(us, "      lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY));
1093         usb_stor_dbg(us, "      command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]);
1094         usb_stor_dbg(us, "      command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]);
1095 }
1096 
1097 /**************************************************************************
1098  * isd200_get_inquiry_data
1099  *
1100  * Get inquiry data
1101  *
1102  * RETURNS:
1103  *    ISD status code
1104  */
1105 static int isd200_get_inquiry_data( struct us_data *us )
1106 {
1107         struct isd200_info *info = (struct isd200_info *)us->extra;
1108         int retStatus = ISD200_GOOD;
1109         u16 *id = info->id;
1110 
1111         usb_stor_dbg(us, "Entering isd200_get_inquiry_data\n");
1112 
1113         /* set default to Master */
1114         info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1115 
1116         /* attempt to manually enumerate this device */
1117         retStatus = isd200_manual_enum(us);
1118         if (retStatus == ISD200_GOOD) {
1119                 int transferStatus;
1120 
1121                 /* check for an ATA device */
1122                 if (info->DeviceFlags & DF_ATA_DEVICE) {
1123                         /* this must be an ATA device */
1124                         /* perform an ATA Command Identify */
1125                         transferStatus = isd200_action( us, ACTION_IDENTIFY,
1126                                                         id, ATA_ID_WORDS * 2);
1127                         if (transferStatus != ISD200_TRANSPORT_GOOD) {
1128                                 /* Error issuing ATA Command Identify */
1129                                 usb_stor_dbg(us, "   Error issuing ATA Command Identify\n");
1130                                 retStatus = ISD200_ERROR;
1131                         } else {
1132                                 /* ATA Command Identify successful */
1133                                 int i;
1134                                 __be16 *src;
1135                                 __u16 *dest;
1136 
1137                                 isd200_fix_driveid(id);
1138                                 isd200_dump_driveid(us, id);
1139 
1140                                 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1141 
1142                                 /* Standard IDE interface only supports disks */
1143                                 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1144 
1145                                 /* The length must be at least 36 (5 + 31) */
1146                                 info->InquiryData.AdditionalLength = 0x1F;
1147 
1148                                 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) {
1149                                         /* set the removable bit */
1150                                         info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1151                                         info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1152                                 }
1153 
1154                                 /* Fill in vendor identification fields */
1155                                 src = (__be16 *)&id[ATA_ID_PROD];
1156                                 dest = (__u16*)info->InquiryData.VendorId;
1157                                 for (i = 0; i < 4; i++)
1158                                         dest[i] = be16_to_cpu(src[i]);
1159 
1160                                 src = (__be16 *)&id[ATA_ID_PROD + 8/2];
1161                                 dest = (__u16*)info->InquiryData.ProductId;
1162                                 for (i=0;i<8;i++)
1163                                         dest[i] = be16_to_cpu(src[i]);
1164 
1165                                 src = (__be16 *)&id[ATA_ID_FW_REV];
1166                                 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1167                                 for (i=0;i<2;i++)
1168                                         dest[i] = be16_to_cpu(src[i]);
1169 
1170                                 /* determine if it supports Media Status Notification */
1171                                 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) {
1172                                         usb_stor_dbg(us, "   Device supports Media Status Notification\n");
1173 
1174                                         /*
1175                                          * Indicate that it is enabled, even
1176                                          * though it is not.
1177                                          * This allows the lock/unlock of the
1178                                          * media to work correctly.
1179                                          */
1180                                         info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1181                                 }
1182                                 else
1183                                         info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1184 
1185                         }
1186                 } else {
1187                         /* 
1188                          * this must be an ATAPI device 
1189                          * use an ATAPI protocol (Transparent SCSI)
1190                          */
1191                         us->protocol_name = "Transparent SCSI";
1192                         us->proto_handler = usb_stor_transparent_scsi_command;
1193 
1194                         usb_stor_dbg(us, "Protocol changed to: %s\n",
1195                                      us->protocol_name);
1196             
1197                         /* Free driver structure */
1198                         us->extra_destructor(info);
1199                         kfree(info);
1200                         us->extra = NULL;
1201                         us->extra_destructor = NULL;
1202                 }
1203         }
1204 
1205         usb_stor_dbg(us, "Leaving isd200_get_inquiry_data %08X\n", retStatus);
1206 
1207         return(retStatus);
1208 }
1209 
1210 /**************************************************************************
1211  * isd200_scsi_to_ata
1212  *                                                                       
1213  * Translate SCSI commands to ATA commands.
1214  *
1215  * RETURNS:
1216  *    1 if the command needs to be sent to the transport layer
1217  *    0 otherwise
1218  */
1219 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1220                               union ata_cdb * ataCdb)
1221 {
1222         struct isd200_info *info = (struct isd200_info *)us->extra;
1223         u16 *id = info->id;
1224         int sendToTransport = 1;
1225         unsigned char sectnum, head;
1226         unsigned short cylinder;
1227         unsigned long lba;
1228         unsigned long blockCount;
1229         unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1230 
1231         memset(ataCdb, 0, sizeof(union ata_cdb));
1232 
1233         /* SCSI Command */
1234         switch (srb->cmnd[0]) {
1235         case INQUIRY:
1236                 usb_stor_dbg(us, "   ATA OUT - INQUIRY\n");
1237 
1238                 /* copy InquiryData */
1239                 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1240                                 sizeof(info->InquiryData), srb);
1241                 srb->result = SAM_STAT_GOOD;
1242                 sendToTransport = 0;
1243                 break;
1244 
1245         case MODE_SENSE:
1246                 usb_stor_dbg(us, "   ATA OUT - SCSIOP_MODE_SENSE\n");
1247 
1248                 /* Initialize the return buffer */
1249                 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1250 
1251                 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1252                 {
1253                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1254                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1255                         ataCdb->generic.TransferBlockSize = 1;
1256                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1257                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1258                         isd200_srb_set_bufflen(srb, 0);
1259                 } else {
1260                         usb_stor_dbg(us, "   Media Status not supported, just report okay\n");
1261                         srb->result = SAM_STAT_GOOD;
1262                         sendToTransport = 0;
1263                 }
1264                 break;
1265 
1266         case TEST_UNIT_READY:
1267                 usb_stor_dbg(us, "   ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1268 
1269                 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1270                 {
1271                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1272                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1273                         ataCdb->generic.TransferBlockSize = 1;
1274                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1275                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1276                         isd200_srb_set_bufflen(srb, 0);
1277                 } else {
1278                         usb_stor_dbg(us, "   Media Status not supported, just report okay\n");
1279                         srb->result = SAM_STAT_GOOD;
1280                         sendToTransport = 0;
1281                 }
1282                 break;
1283 
1284         case READ_CAPACITY:
1285         {
1286                 unsigned long capacity;
1287                 struct read_capacity_data readCapacityData;
1288 
1289                 usb_stor_dbg(us, "   ATA OUT - SCSIOP_READ_CAPACITY\n");
1290 
1291                 if (ata_id_has_lba(id))
1292                         capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1;
1293                 else
1294                         capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] *
1295                                     id[ATA_ID_SECTORS]) - 1;
1296 
1297                 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1298                 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1299 
1300                 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1301                                 sizeof(readCapacityData), srb);
1302                 srb->result = SAM_STAT_GOOD;
1303                 sendToTransport = 0;
1304         }
1305         break;
1306 
1307         case READ_10:
1308                 usb_stor_dbg(us, "   ATA OUT - SCSIOP_READ\n");
1309 
1310                 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1311                 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1312 
1313                 if (ata_id_has_lba(id)) {
1314                         sectnum = (unsigned char)(lba);
1315                         cylinder = (unsigned short)(lba>>8);
1316                         head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1317                 } else {
1318                         sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1319                         cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1320                                         id[ATA_ID_HEADS]));
1321                         head = (u8)((lba / id[ATA_ID_SECTORS]) %
1322                                         id[ATA_ID_HEADS]);
1323                 }
1324                 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1325                 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1326                 ataCdb->generic.TransferBlockSize = 1;
1327                 ataCdb->generic.RegisterSelect =
1328                   REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1329                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1330                   REG_DEVICE_HEAD  | REG_COMMAND;
1331                 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1332                 ataCdb->write.SectorNumberByte = sectnum;
1333                 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1334                 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1335                 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1336                 ataCdb->write.CommandByte = ATA_CMD_PIO_READ;
1337                 break;
1338 
1339         case WRITE_10:
1340                 usb_stor_dbg(us, "   ATA OUT - SCSIOP_WRITE\n");
1341 
1342                 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1343                 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1344 
1345                 if (ata_id_has_lba(id)) {
1346                         sectnum = (unsigned char)(lba);
1347                         cylinder = (unsigned short)(lba>>8);
1348                         head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1349                 } else {
1350                         sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1351                         cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1352                                         id[ATA_ID_HEADS]));
1353                         head = (u8)((lba / id[ATA_ID_SECTORS]) %
1354                                         id[ATA_ID_HEADS]);
1355                 }
1356                 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1357                 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1358                 ataCdb->generic.TransferBlockSize = 1;
1359                 ataCdb->generic.RegisterSelect =
1360                   REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1361                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1362                   REG_DEVICE_HEAD  | REG_COMMAND;
1363                 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1364                 ataCdb->write.SectorNumberByte = sectnum;
1365                 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1366                 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1367                 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1368                 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE;
1369                 break;
1370 
1371         case ALLOW_MEDIUM_REMOVAL:
1372                 usb_stor_dbg(us, "   ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1373 
1374                 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1375                         usb_stor_dbg(us, "   srb->cmnd[4] = 0x%X\n",
1376                                      srb->cmnd[4]);
1377             
1378                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1379                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1380                         ataCdb->generic.TransferBlockSize = 1;
1381                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1382                         ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1383                                 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
1384                         isd200_srb_set_bufflen(srb, 0);
1385                 } else {
1386                         usb_stor_dbg(us, "   Not removeable media, just report okay\n");
1387                         srb->result = SAM_STAT_GOOD;
1388                         sendToTransport = 0;
1389                 }
1390                 break;
1391 
1392         case START_STOP:    
1393                 usb_stor_dbg(us, "   ATA OUT - SCSIOP_START_STOP_UNIT\n");
1394                 usb_stor_dbg(us, "   srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1395 
1396                 if ((srb->cmnd[4] & 0x3) == 0x2) {
1397                         usb_stor_dbg(us, "   Media Eject\n");
1398                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1399                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1400                         ataCdb->generic.TransferBlockSize = 0;
1401                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1402                         ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1403                 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1404                         usb_stor_dbg(us, "   Get Media Status\n");
1405                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1406                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1407                         ataCdb->generic.TransferBlockSize = 1;
1408                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1409                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1410                         isd200_srb_set_bufflen(srb, 0);
1411                 } else {
1412                         usb_stor_dbg(us, "   Nothing to do, just report okay\n");
1413                         srb->result = SAM_STAT_GOOD;
1414                         sendToTransport = 0;
1415                 }
1416                 break;
1417 
1418         default:
1419                 usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n",
1420                              srb->cmnd[0]);
1421                 srb->result = DID_ERROR << 16;
1422                 sendToTransport = 0;
1423                 break;
1424         }
1425 
1426         return(sendToTransport);
1427 }
1428 
1429 
1430 /**************************************************************************
1431  * isd200_free_info
1432  *
1433  * Frees the driver structure.
1434  */
1435 static void isd200_free_info_ptrs(void *info_)
1436 {
1437         struct isd200_info *info = (struct isd200_info *) info_;
1438 
1439         if (info) {
1440                 kfree(info->id);
1441                 kfree(info->RegsBuf);
1442                 kfree(info->srb.sense_buffer);
1443         }
1444 }
1445 
1446 /**************************************************************************
1447  * isd200_init_info
1448  *                                                                       
1449  * Allocates (if necessary) and initializes the driver structure.
1450  *
1451  * RETURNS:
1452  *    ISD status code
1453  */
1454 static int isd200_init_info(struct us_data *us)
1455 {
1456         struct isd200_info *info;
1457 
1458         info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1459         if (!info)
1460                 return ISD200_ERROR;
1461 
1462         info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
1463         info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1464         info->srb.sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1465 
1466         if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1467                 isd200_free_info_ptrs(info);
1468                 kfree(info);
1469                 return ISD200_ERROR;
1470         }
1471 
1472         us->extra = info;
1473         us->extra_destructor = isd200_free_info_ptrs;
1474 
1475         return ISD200_GOOD;
1476 }
1477 
1478 /**************************************************************************
1479  * Initialization for the ISD200 
1480  */
1481 
1482 static int isd200_Initialization(struct us_data *us)
1483 {
1484         usb_stor_dbg(us, "ISD200 Initialization...\n");
1485 
1486         /* Initialize ISD200 info struct */
1487 
1488         if (isd200_init_info(us) == ISD200_ERROR) {
1489                 usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n");
1490         } else {
1491                 /* Get device specific data */
1492 
1493                 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1494                         usb_stor_dbg(us, "ISD200 Initialization Failure\n");
1495                 else
1496                         usb_stor_dbg(us, "ISD200 Initialization complete\n");
1497         }
1498 
1499         return 0;
1500 }
1501 
1502 
1503 /**************************************************************************
1504  * Protocol and Transport for the ISD200 ASIC
1505  *
1506  * This protocol and transport are for ATA devices connected to an ISD200
1507  * ASIC.  An ATAPI device that is connected as a slave device will be
1508  * detected in the driver initialization function and the protocol will
1509  * be changed to an ATAPI protocol (Transparent SCSI).
1510  *
1511  */
1512 
1513 static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1514 {
1515         int sendToTransport, orig_bufflen;
1516         union ata_cdb ataCdb;
1517 
1518         /* Make sure driver was initialized */
1519 
1520         if (us->extra == NULL) {
1521                 usb_stor_dbg(us, "ERROR Driver not initialized\n");
1522                 srb->result = DID_ERROR << 16;
1523                 return;
1524         }
1525 
1526         scsi_set_resid(srb, 0);
1527         /* scsi_bufflen might change in protocol translation to ata */
1528         orig_bufflen = scsi_bufflen(srb);
1529         sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1530 
1531         /* send the command to the transport layer */
1532         if (sendToTransport)
1533                 isd200_invoke_transport(us, srb, &ataCdb);
1534 
1535         isd200_srb_set_bufflen(srb, orig_bufflen);
1536 }
1537 
1538 static struct scsi_host_template isd200_host_template;
1539 
1540 static int isd200_probe(struct usb_interface *intf,
1541                          const struct usb_device_id *id)
1542 {
1543         struct us_data *us;
1544         int result;
1545 
1546         result = usb_stor_probe1(&us, intf, id,
1547                         (id - isd200_usb_ids) + isd200_unusual_dev_list,
1548                         &isd200_host_template);
1549         if (result)
1550                 return result;
1551 
1552         us->protocol_name = "ISD200 ATA/ATAPI";
1553         us->proto_handler = isd200_ata_command;
1554 
1555         result = usb_stor_probe2(us);
1556         return result;
1557 }
1558 
1559 static struct usb_driver isd200_driver = {
1560         .name =         DRV_NAME,
1561         .probe =        isd200_probe,
1562         .disconnect =   usb_stor_disconnect,
1563         .suspend =      usb_stor_suspend,
1564         .resume =       usb_stor_resume,
1565         .reset_resume = usb_stor_reset_resume,
1566         .pre_reset =    usb_stor_pre_reset,
1567         .post_reset =   usb_stor_post_reset,
1568         .id_table =     isd200_usb_ids,
1569         .soft_unbind =  1,
1570         .no_dynamic_id = 1,
1571 };
1572 
1573 module_usb_stor_driver(isd200_driver, isd200_host_template, DRV_NAME);
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/usb/storage/isd200.c

DEFINITIONS
