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[MAX_COMMAND_SIZE]; 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 memcpy(srb->cmnd, info->cmnd, MAX_COMMAND_SIZE); 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; 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 /* Prevent division by 0 in isd200_scsi_to_ata() */ 1141 if (id[ATA_ID_HEADS] == 0 || id[ATA_ID_SECTORS] == 0) { 1142 usb_stor_dbg(us, " Invalid ATA Identify data\n"); 1143 retStatus = ISD200_ERROR; 1144 goto Done; 1145 } 1146 1147 memset(&info->InquiryData, 0, sizeof(info->InquiryData)); 1148 1149 /* Standard IDE interface only supports disks */ 1150 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE; 1151 1152 /* The length must be at least 36 (5 + 31) */ 1153 info->InquiryData.AdditionalLength = 0x1F; 1154 1155 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) { 1156 /* set the removable bit */ 1157 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE; 1158 info->DeviceFlags |= DF_REMOVABLE_MEDIA; 1159 } 1160 1161 /* Fill in vendor identification fields */ 1162 src = (__be16 *)&id[ATA_ID_PROD]; 1163 dest = (__u16*)info->InquiryData.VendorId; 1164 for (i = 0; i < 4; i++) 1165 dest[i] = be16_to_cpu(src[i]); 1166 1167 src = (__be16 *)&id[ATA_ID_PROD + 8/2]; 1168 dest = (__u16*)info->InquiryData.ProductId; 1169 for (i=0;i<8;i++) 1170 dest[i] = be16_to_cpu(src[i]); 1171 1172 src = (__be16 *)&id[ATA_ID_FW_REV]; 1173 dest = (__u16*)info->InquiryData.ProductRevisionLevel; 1174 for (i=0;i<2;i++) 1175 dest[i] = be16_to_cpu(src[i]); 1176 1177 /* determine if it supports Media Status Notification */ 1178 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) { 1179 usb_stor_dbg(us, " Device supports Media Status Notification\n"); 1180 1181 /* 1182 * Indicate that it is enabled, even 1183 * though it is not. 1184 * This allows the lock/unlock of the 1185 * media to work correctly. 1186 */ 1187 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED; 1188 } 1189 else 1190 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED; 1191 1192 } 1193 } else { 1194 /* 1195 * this must be an ATAPI device 1196 * use an ATAPI protocol (Transparent SCSI) 1197 */ 1198 us->protocol_name = "Transparent SCSI"; 1199 us->proto_handler = usb_stor_transparent_scsi_command; 1200 1201 usb_stor_dbg(us, "Protocol changed to: %s\n", 1202 us->protocol_name); 1203 1204 /* Free driver structure */ 1205 us->extra_destructor(info); 1206 kfree(info); 1207 us->extra = NULL; 1208 us->extra_destructor = NULL; 1209 } 1210 } 1211 1212 Done: 1213 usb_stor_dbg(us, "Leaving isd200_get_inquiry_data %08X\n", retStatus); 1214 1215 return(retStatus); 1216 } 1217 1218 /************************************************************************** 1219 * isd200_scsi_to_ata 1220 * 1221 * Translate SCSI commands to ATA commands. 1222 * 1223 * RETURNS: 1224 * 1 if the command needs to be sent to the transport layer 1225 * 0 otherwise 1226 */ 1227 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us, 1228 union ata_cdb * ataCdb) 1229 { 1230 struct isd200_info *info = (struct isd200_info *)us->extra; 1231 u16 *id = info->id; 1232 int sendToTransport = 1; 1233 unsigned char sectnum, head; 1234 unsigned short cylinder; 1235 unsigned long lba; 1236 unsigned long blockCount; 1237 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 1238 1239 memset(ataCdb, 0, sizeof(union ata_cdb)); 1240 1241 /* SCSI Command */ 1242 switch (srb->cmnd[0]) { 1243 case INQUIRY: 1244 usb_stor_dbg(us, " ATA OUT - INQUIRY\n"); 1245 1246 /* copy InquiryData */ 1247 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData, 1248 sizeof(info->InquiryData), srb); 1249 srb->result = SAM_STAT_GOOD; 1250 sendToTransport = 0; 1251 break; 1252 1253 case MODE_SENSE: 1254 usb_stor_dbg(us, " ATA OUT - SCSIOP_MODE_SENSE\n"); 1255 1256 /* Initialize the return buffer */ 1257 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb); 1258 1259 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED) 1260 { 1261 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1262 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1263 ataCdb->generic.TransferBlockSize = 1; 1264 ataCdb->generic.RegisterSelect = REG_COMMAND; 1265 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1266 isd200_srb_set_bufflen(srb, 0); 1267 } else { 1268 usb_stor_dbg(us, " Media Status not supported, just report okay\n"); 1269 srb->result = SAM_STAT_GOOD; 1270 sendToTransport = 0; 1271 } 1272 break; 1273 1274 case TEST_UNIT_READY: 1275 usb_stor_dbg(us, " ATA OUT - SCSIOP_TEST_UNIT_READY\n"); 1276 1277 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED) 1278 { 1279 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1280 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1281 ataCdb->generic.TransferBlockSize = 1; 1282 ataCdb->generic.RegisterSelect = REG_COMMAND; 1283 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1284 isd200_srb_set_bufflen(srb, 0); 1285 } else { 1286 usb_stor_dbg(us, " Media Status not supported, just report okay\n"); 1287 srb->result = SAM_STAT_GOOD; 1288 sendToTransport = 0; 1289 } 1290 break; 1291 1292 case READ_CAPACITY: 1293 { 1294 unsigned long capacity; 1295 struct read_capacity_data readCapacityData; 1296 1297 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ_CAPACITY\n"); 1298 1299 if (ata_id_has_lba(id)) 1300 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1; 1301 else 1302 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] * 1303 id[ATA_ID_SECTORS]) - 1; 1304 1305 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity); 1306 readCapacityData.BytesPerBlock = cpu_to_be32(0x200); 1307 1308 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData, 1309 sizeof(readCapacityData), srb); 1310 srb->result = SAM_STAT_GOOD; 1311 sendToTransport = 0; 1312 } 1313 break; 1314 1315 case READ_10: 1316 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ\n"); 1317 1318 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]); 1319 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8]; 1320 1321 if (ata_id_has_lba(id)) { 1322 sectnum = (unsigned char)(lba); 1323 cylinder = (unsigned short)(lba>>8); 1324 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F); 1325 } else { 1326 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1); 1327 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] * 1328 id[ATA_ID_HEADS])); 1329 head = (u8)((lba / id[ATA_ID_SECTORS]) % 1330 id[ATA_ID_HEADS]); 1331 } 1332 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1333 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1334 ataCdb->generic.TransferBlockSize = 1; 1335 ataCdb->generic.RegisterSelect = 1336 REG_SECTOR_COUNT | REG_SECTOR_NUMBER | 1337 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 1338 REG_DEVICE_HEAD | REG_COMMAND; 1339 ataCdb->write.SectorCountByte = (unsigned char)blockCount; 1340 ataCdb->write.SectorNumberByte = sectnum; 1341 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8); 1342 ataCdb->write.CylinderLowByte = (unsigned char)cylinder; 1343 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD); 1344 ataCdb->write.CommandByte = ATA_CMD_PIO_READ; 1345 break; 1346 1347 case WRITE_10: 1348 usb_stor_dbg(us, " ATA OUT - SCSIOP_WRITE\n"); 1349 1350 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]); 1351 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8]; 1352 1353 if (ata_id_has_lba(id)) { 1354 sectnum = (unsigned char)(lba); 1355 cylinder = (unsigned short)(lba>>8); 1356 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F); 1357 } else { 1358 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1); 1359 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] * 1360 id[ATA_ID_HEADS])); 1361 head = (u8)((lba / id[ATA_ID_SECTORS]) % 1362 id[ATA_ID_HEADS]); 1363 } 1364 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1365 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1366 ataCdb->generic.TransferBlockSize = 1; 1367 ataCdb->generic.RegisterSelect = 1368 REG_SECTOR_COUNT | REG_SECTOR_NUMBER | 1369 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 1370 REG_DEVICE_HEAD | REG_COMMAND; 1371 ataCdb->write.SectorCountByte = (unsigned char)blockCount; 1372 ataCdb->write.SectorNumberByte = sectnum; 1373 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8); 1374 ataCdb->write.CylinderLowByte = (unsigned char)cylinder; 1375 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD); 1376 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE; 1377 break; 1378 1379 case ALLOW_MEDIUM_REMOVAL: 1380 usb_stor_dbg(us, " ATA OUT - SCSIOP_MEDIUM_REMOVAL\n"); 1381 1382 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) { 1383 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", 1384 srb->cmnd[4]); 1385 1386 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1387 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1388 ataCdb->generic.TransferBlockSize = 1; 1389 ataCdb->generic.RegisterSelect = REG_COMMAND; 1390 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ? 1391 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK; 1392 isd200_srb_set_bufflen(srb, 0); 1393 } else { 1394 usb_stor_dbg(us, " Not removable media, just report okay\n"); 1395 srb->result = SAM_STAT_GOOD; 1396 sendToTransport = 0; 1397 } 1398 break; 1399 1400 case START_STOP: 1401 usb_stor_dbg(us, " ATA OUT - SCSIOP_START_STOP_UNIT\n"); 1402 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", srb->cmnd[4]); 1403 1404 if ((srb->cmnd[4] & 0x3) == 0x2) { 1405 usb_stor_dbg(us, " Media Eject\n"); 1406 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1407 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1408 ataCdb->generic.TransferBlockSize = 0; 1409 ataCdb->generic.RegisterSelect = REG_COMMAND; 1410 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT; 1411 } else if ((srb->cmnd[4] & 0x3) == 0x1) { 1412 usb_stor_dbg(us, " Get Media Status\n"); 1413 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1414 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1415 ataCdb->generic.TransferBlockSize = 1; 1416 ataCdb->generic.RegisterSelect = REG_COMMAND; 1417 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1418 isd200_srb_set_bufflen(srb, 0); 1419 } else { 1420 usb_stor_dbg(us, " Nothing to do, just report okay\n"); 1421 srb->result = SAM_STAT_GOOD; 1422 sendToTransport = 0; 1423 } 1424 break; 1425 1426 default: 1427 usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n", 1428 srb->cmnd[0]); 1429 srb->result = DID_ERROR << 16; 1430 sendToTransport = 0; 1431 break; 1432 } 1433 1434 return(sendToTransport); 1435 } 1436 1437 1438 /************************************************************************** 1439 * isd200_free_info 1440 * 1441 * Frees the driver structure. 1442 */ 1443 static void isd200_free_info_ptrs(void *info_) 1444 { 1445 struct isd200_info *info = (struct isd200_info *) info_; 1446 1447 if (info) { 1448 kfree(info->id); 1449 kfree(info->RegsBuf); 1450 kfree(info->srb.sense_buffer); 1451 } 1452 } 1453 1454 /************************************************************************** 1455 * isd200_init_info 1456 * 1457 * Allocates (if necessary) and initializes the driver structure. 1458 * 1459 * RETURNS: 1460 * error status code 1461 */ 1462 static int isd200_init_info(struct us_data *us) 1463 { 1464 struct isd200_info *info; 1465 1466 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL); 1467 if (!info) 1468 return -ENOMEM; 1469 1470 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL); 1471 info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL); 1472 info->srb.sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL); 1473 1474 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) { 1475 isd200_free_info_ptrs(info); 1476 kfree(info); 1477 return -ENOMEM; 1478 } 1479 1480 us->extra = info; 1481 us->extra_destructor = isd200_free_info_ptrs; 1482 1483 return 0; 1484 } 1485 1486 /************************************************************************** 1487 * Initialization for the ISD200 1488 */ 1489 1490 static int isd200_Initialization(struct us_data *us) 1491 { 1492 int rc = 0; 1493 1494 usb_stor_dbg(us, "ISD200 Initialization...\n"); 1495 1496 /* Initialize ISD200 info struct */ 1497 1498 if (isd200_init_info(us) < 0) { 1499 usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n"); 1500 rc = -ENOMEM; 1501 } else { 1502 /* Get device specific data */ 1503 1504 if (isd200_get_inquiry_data(us) != ISD200_GOOD) { 1505 usb_stor_dbg(us, "ISD200 Initialization Failure\n"); 1506 rc = -EINVAL; 1507 } else { 1508 usb_stor_dbg(us, "ISD200 Initialization complete\n"); 1509 } 1510 } 1511 1512 return rc; 1513 } 1514 1515 1516 /************************************************************************** 1517 * Protocol and Transport for the ISD200 ASIC 1518 * 1519 * This protocol and transport are for ATA devices connected to an ISD200 1520 * ASIC. An ATAPI device that is connected as a slave device will be 1521 * detected in the driver initialization function and the protocol will 1522 * be changed to an ATAPI protocol (Transparent SCSI). 1523 * 1524 */ 1525 1526 static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us) 1527 { 1528 int sendToTransport, orig_bufflen; 1529 union ata_cdb ataCdb; 1530 1531 /* Make sure driver was initialized */ 1532 1533 if (us->extra == NULL) { 1534 usb_stor_dbg(us, "ERROR Driver not initialized\n"); 1535 srb->result = DID_ERROR << 16; 1536 return; 1537 } 1538 1539 scsi_set_resid(srb, 0); 1540 /* scsi_bufflen might change in protocol translation to ata */ 1541 orig_bufflen = scsi_bufflen(srb); 1542 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb); 1543 1544 /* send the command to the transport layer */ 1545 if (sendToTransport) 1546 isd200_invoke_transport(us, srb, &ataCdb); 1547 1548 isd200_srb_set_bufflen(srb, orig_bufflen); 1549 } 1550 1551 static struct scsi_host_template isd200_host_template; 1552 1553 static int isd200_probe(struct usb_interface *intf, 1554 const struct usb_device_id *id) 1555 { 1556 struct us_data *us; 1557 int result; 1558 1559 result = usb_stor_probe1(&us, intf, id, 1560 (id - isd200_usb_ids) + isd200_unusual_dev_list, 1561 &isd200_host_template); 1562 if (result) 1563 return result; 1564 1565 us->protocol_name = "ISD200 ATA/ATAPI"; 1566 us->proto_handler = isd200_ata_command; 1567 1568 result = usb_stor_probe2(us); 1569 return result; 1570 } 1571 1572 static struct usb_driver isd200_driver = { 1573 .name = DRV_NAME, 1574 .probe = isd200_probe, 1575 .disconnect = usb_stor_disconnect, 1576 .suspend = usb_stor_suspend, 1577 .resume = usb_stor_resume, 1578 .reset_resume = usb_stor_reset_resume, 1579 .pre_reset = usb_stor_pre_reset, 1580 .post_reset = usb_stor_post_reset, 1581 .id_table = isd200_usb_ids, 1582 .soft_unbind = 1, 1583 .no_dynamic_id = 1, 1584 }; 1585 1586 module_usb_stor_driver(isd200_driver, isd200_host_template, DRV_NAME); 1587