1 /* Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC 2 * 3 * Current development and maintenance: 4 * (C) 2001-2002 Björn Stenberg (bjorn@haxx.se) 5 * 6 * Developed with the assistance of: 7 * (C) 2002 Alan Stern <stern@rowland.org> 8 * 9 * Initial work: 10 * (C) 2000 In-System Design, Inc. (support@in-system.com) 11 * 12 * The ISD200 ASIC does not natively support ATA devices. The chip 13 * does implement an interface, the ATA Command Block (ATACB) which provides 14 * a means of passing ATA commands and ATA register accesses to a device. 15 * 16 * This program is free software; you can redistribute it and/or modify it 17 * under the terms of the GNU General Public License as published by the 18 * Free Software Foundation; either version 2, or (at your option) any 19 * later version. 20 * 21 * This program is distributed in the hope that it will be useful, but 22 * WITHOUT ANY WARRANTY; without even the implied warranty of 23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 24 * General Public License for more details. 25 * 26 * You should have received a copy of the GNU General Public License along 27 * with this program; if not, write to the Free Software Foundation, Inc., 28 * 675 Mass Ave, Cambridge, MA 02139, USA. 29 * 30 * History: 31 * 32 * 2002-10-19: Removed the specialized transfer routines. 33 * (Alan Stern <stern@rowland.harvard.edu>) 34 * 2001-02-24: Removed lots of duplicate code and simplified the structure. 35 * (bjorn@haxx.se) 36 * 2002-01-16: Fixed endianness bug so it works on the ppc arch. 37 * (Luc Saillard <luc@saillard.org>) 38 * 2002-01-17: All bitfields removed. 39 * (bjorn@haxx.se) 40 */ 41 42 43 /* Include files */ 44 45 #include <linux/jiffies.h> 46 #include <linux/errno.h> 47 #include <linux/module.h> 48 #include <linux/slab.h> 49 #include <linux/ata.h> 50 #include <linux/hdreg.h> 51 #include <linux/scatterlist.h> 52 53 #include <scsi/scsi.h> 54 #include <scsi/scsi_cmnd.h> 55 #include <scsi/scsi_device.h> 56 57 #include "usb.h" 58 #include "transport.h" 59 #include "protocol.h" 60 #include "debug.h" 61 #include "scsiglue.h" 62 63 MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC"); 64 MODULE_AUTHOR("Bj�rn Stenberg <bjorn@haxx.se>"); 65 MODULE_LICENSE("GPL"); 66 67 static int isd200_Initialization(struct us_data *us); 68 69 70 /* 71 * The table of devices 72 */ 73 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ 74 vendorName, productName, useProtocol, useTransport, \ 75 initFunction, flags) \ 76 { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ 77 .driver_info = (flags)|(USB_US_TYPE_STOR<<24) } 78 79 struct usb_device_id isd200_usb_ids[] = { 80 # include "unusual_isd200.h" 81 { } /* Terminating entry */ 82 }; 83 MODULE_DEVICE_TABLE(usb, isd200_usb_ids); 84 85 #undef UNUSUAL_DEV 86 #undef USUAL_DEV 87 88 /* 89 * The flags table 90 */ 91 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ 92 vendor_name, product_name, use_protocol, use_transport, \ 93 init_function, Flags) \ 94 { \ 95 .vendorName = vendor_name, \ 96 .productName = product_name, \ 97 .useProtocol = use_protocol, \ 98 .useTransport = use_transport, \ 99 .initFunction = init_function, \ 100 } 101 102 static struct us_unusual_dev isd200_unusual_dev_list[] = { 103 # include "unusual_isd200.h" 104 { } /* Terminating entry */ 105 }; 106 107 #undef UNUSUAL_DEV 108 #undef USUAL_DEV 109 110 111 /* Timeout defines (in Seconds) */ 112 113 #define ISD200_ENUM_BSY_TIMEOUT 35 114 #define ISD200_ENUM_DETECT_TIMEOUT 30 115 #define ISD200_DEFAULT_TIMEOUT 30 116 117 /* device flags */ 118 #define DF_ATA_DEVICE 0x0001 119 #define DF_MEDIA_STATUS_ENABLED 0x0002 120 #define DF_REMOVABLE_MEDIA 0x0004 121 122 /* capability bit definitions */ 123 #define CAPABILITY_DMA 0x01 124 #define CAPABILITY_LBA 0x02 125 126 /* command_setX bit definitions */ 127 #define COMMANDSET_REMOVABLE 0x02 128 #define COMMANDSET_MEDIA_STATUS 0x10 129 130 /* ATA Vendor Specific defines */ 131 #define ATA_ADDRESS_DEVHEAD_STD 0xa0 132 #define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40 133 #define ATA_ADDRESS_DEVHEAD_SLAVE 0x10 134 135 /* Action Select bits */ 136 #define ACTION_SELECT_0 0x01 137 #define ACTION_SELECT_1 0x02 138 #define ACTION_SELECT_2 0x04 139 #define ACTION_SELECT_3 0x08 140 #define ACTION_SELECT_4 0x10 141 #define ACTION_SELECT_5 0x20 142 #define ACTION_SELECT_6 0x40 143 #define ACTION_SELECT_7 0x80 144 145 /* Register Select bits */ 146 #define REG_ALTERNATE_STATUS 0x01 147 #define REG_DEVICE_CONTROL 0x01 148 #define REG_ERROR 0x02 149 #define REG_FEATURES 0x02 150 #define REG_SECTOR_COUNT 0x04 151 #define REG_SECTOR_NUMBER 0x08 152 #define REG_CYLINDER_LOW 0x10 153 #define REG_CYLINDER_HIGH 0x20 154 #define REG_DEVICE_HEAD 0x40 155 #define REG_STATUS 0x80 156 #define REG_COMMAND 0x80 157 158 /* ATA registers offset definitions */ 159 #define ATA_REG_ERROR_OFFSET 1 160 #define ATA_REG_LCYL_OFFSET 4 161 #define ATA_REG_HCYL_OFFSET 5 162 #define ATA_REG_STATUS_OFFSET 7 163 164 /* ATA error definitions not in <linux/hdreg.h> */ 165 #define ATA_ERROR_MEDIA_CHANGE 0x20 166 167 /* ATA command definitions not in <linux/hdreg.h> */ 168 #define ATA_COMMAND_GET_MEDIA_STATUS 0xDA 169 #define ATA_COMMAND_MEDIA_EJECT 0xED 170 171 /* ATA drive control definitions */ 172 #define ATA_DC_DISABLE_INTERRUPTS 0x02 173 #define ATA_DC_RESET_CONTROLLER 0x04 174 #define ATA_DC_REENABLE_CONTROLLER 0x00 175 176 /* 177 * General purpose return codes 178 */ 179 180 #define ISD200_ERROR -1 181 #define ISD200_GOOD 0 182 183 /* 184 * Transport return codes 185 */ 186 187 #define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */ 188 #define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */ 189 #define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */ 190 191 /* driver action codes */ 192 #define ACTION_READ_STATUS 0 193 #define ACTION_RESET 1 194 #define ACTION_REENABLE 2 195 #define ACTION_SOFT_RESET 3 196 #define ACTION_ENUM 4 197 #define ACTION_IDENTIFY 5 198 199 200 /* 201 * ata_cdb struct 202 */ 203 204 205 union ata_cdb { 206 struct { 207 unsigned char SignatureByte0; 208 unsigned char SignatureByte1; 209 unsigned char ActionSelect; 210 unsigned char RegisterSelect; 211 unsigned char TransferBlockSize; 212 unsigned char WriteData3F6; 213 unsigned char WriteData1F1; 214 unsigned char WriteData1F2; 215 unsigned char WriteData1F3; 216 unsigned char WriteData1F4; 217 unsigned char WriteData1F5; 218 unsigned char WriteData1F6; 219 unsigned char WriteData1F7; 220 unsigned char Reserved[3]; 221 } generic; 222 223 struct { 224 unsigned char SignatureByte0; 225 unsigned char SignatureByte1; 226 unsigned char ActionSelect; 227 unsigned char RegisterSelect; 228 unsigned char TransferBlockSize; 229 unsigned char AlternateStatusByte; 230 unsigned char ErrorByte; 231 unsigned char SectorCountByte; 232 unsigned char SectorNumberByte; 233 unsigned char CylinderLowByte; 234 unsigned char CylinderHighByte; 235 unsigned char DeviceHeadByte; 236 unsigned char StatusByte; 237 unsigned char Reserved[3]; 238 } read; 239 240 struct { 241 unsigned char SignatureByte0; 242 unsigned char SignatureByte1; 243 unsigned char ActionSelect; 244 unsigned char RegisterSelect; 245 unsigned char TransferBlockSize; 246 unsigned char DeviceControlByte; 247 unsigned char FeaturesByte; 248 unsigned char SectorCountByte; 249 unsigned char SectorNumberByte; 250 unsigned char CylinderLowByte; 251 unsigned char CylinderHighByte; 252 unsigned char DeviceHeadByte; 253 unsigned char CommandByte; 254 unsigned char Reserved[3]; 255 } write; 256 }; 257 258 259 /* 260 * Inquiry data structure. This is the data returned from the target 261 * after it receives an inquiry. 262 * 263 * This structure may be extended by the number of bytes specified 264 * in the field AdditionalLength. The defined size constant only 265 * includes fields through ProductRevisionLevel. 266 */ 267 268 /* 269 * DeviceType field 270 */ 271 #define DIRECT_ACCESS_DEVICE 0x00 /* disks */ 272 #define DEVICE_REMOVABLE 0x80 273 274 struct inquiry_data { 275 unsigned char DeviceType; 276 unsigned char DeviceTypeModifier; 277 unsigned char Versions; 278 unsigned char Format; 279 unsigned char AdditionalLength; 280 unsigned char Reserved[2]; 281 unsigned char Capability; 282 unsigned char VendorId[8]; 283 unsigned char ProductId[16]; 284 unsigned char ProductRevisionLevel[4]; 285 unsigned char VendorSpecific[20]; 286 unsigned char Reserved3[40]; 287 } __attribute__ ((packed)); 288 289 /* 290 * INQUIRY data buffer size 291 */ 292 293 #define INQUIRYDATABUFFERSIZE 36 294 295 296 /* 297 * ISD200 CONFIG data struct 298 */ 299 300 #define ATACFG_TIMING 0x0f 301 #define ATACFG_ATAPI_RESET 0x10 302 #define ATACFG_MASTER 0x20 303 #define ATACFG_BLOCKSIZE 0xa0 304 305 #define ATACFGE_LAST_LUN 0x07 306 #define ATACFGE_DESC_OVERRIDE 0x08 307 #define ATACFGE_STATE_SUSPEND 0x10 308 #define ATACFGE_SKIP_BOOT 0x20 309 #define ATACFGE_CONF_DESC2 0x40 310 #define ATACFGE_INIT_STATUS 0x80 311 312 #define CFG_CAPABILITY_SRST 0x01 313 314 struct isd200_config { 315 unsigned char EventNotification; 316 unsigned char ExternalClock; 317 unsigned char ATAInitTimeout; 318 unsigned char ATAConfig; 319 unsigned char ATAMajorCommand; 320 unsigned char ATAMinorCommand; 321 unsigned char ATAExtraConfig; 322 unsigned char Capability; 323 }__attribute__ ((packed)); 324 325 326 /* 327 * ISD200 driver information struct 328 */ 329 330 struct isd200_info { 331 struct inquiry_data InquiryData; 332 u16 *id; 333 struct isd200_config ConfigData; 334 unsigned char *RegsBuf; 335 unsigned char ATARegs[8]; 336 unsigned char DeviceHead; 337 unsigned char DeviceFlags; 338 339 /* maximum number of LUNs supported */ 340 unsigned char MaxLUNs; 341 unsigned char cmnd[BLK_MAX_CDB]; 342 struct scsi_cmnd srb; 343 struct scatterlist sg; 344 }; 345 346 347 /* 348 * Read Capacity Data - returned in Big Endian format 349 */ 350 351 struct read_capacity_data { 352 __be32 LogicalBlockAddress; 353 __be32 BytesPerBlock; 354 }; 355 356 /* 357 * Read Block Limits Data - returned in Big Endian format 358 * This structure returns the maximum and minimum block 359 * size for a TAPE device. 360 */ 361 362 struct read_block_limits { 363 unsigned char Reserved; 364 unsigned char BlockMaximumSize[3]; 365 unsigned char BlockMinimumSize[2]; 366 }; 367 368 369 /* 370 * Sense Data Format 371 */ 372 373 #define SENSE_ERRCODE 0x7f 374 #define SENSE_ERRCODE_VALID 0x80 375 #define SENSE_FLAG_SENSE_KEY 0x0f 376 #define SENSE_FLAG_BAD_LENGTH 0x20 377 #define SENSE_FLAG_END_OF_MEDIA 0x40 378 #define SENSE_FLAG_FILE_MARK 0x80 379 struct sense_data { 380 unsigned char ErrorCode; 381 unsigned char SegmentNumber; 382 unsigned char Flags; 383 unsigned char Information[4]; 384 unsigned char AdditionalSenseLength; 385 unsigned char CommandSpecificInformation[4]; 386 unsigned char AdditionalSenseCode; 387 unsigned char AdditionalSenseCodeQualifier; 388 unsigned char FieldReplaceableUnitCode; 389 unsigned char SenseKeySpecific[3]; 390 } __attribute__ ((packed)); 391 392 /* 393 * Default request sense buffer size 394 */ 395 396 #define SENSE_BUFFER_SIZE 18 397 398 /*********************************************************************** 399 * Helper routines 400 ***********************************************************************/ 401 402 /************************************************************************** 403 * isd200_build_sense 404 * 405 * Builds an artificial sense buffer to report the results of a 406 * failed command. 407 * 408 * RETURNS: 409 * void 410 */ 411 static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb) 412 { 413 struct isd200_info *info = (struct isd200_info *)us->extra; 414 struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0]; 415 unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET]; 416 417 if(error & ATA_ERROR_MEDIA_CHANGE) { 418 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID; 419 buf->AdditionalSenseLength = 0xb; 420 buf->Flags = UNIT_ATTENTION; 421 buf->AdditionalSenseCode = 0; 422 buf->AdditionalSenseCodeQualifier = 0; 423 } else if (error & ATA_MCR) { 424 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID; 425 buf->AdditionalSenseLength = 0xb; 426 buf->Flags = UNIT_ATTENTION; 427 buf->AdditionalSenseCode = 0; 428 buf->AdditionalSenseCodeQualifier = 0; 429 } else if (error & ATA_TRK0NF) { 430 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID; 431 buf->AdditionalSenseLength = 0xb; 432 buf->Flags = NOT_READY; 433 buf->AdditionalSenseCode = 0; 434 buf->AdditionalSenseCodeQualifier = 0; 435 } else if (error & ATA_UNC) { 436 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID; 437 buf->AdditionalSenseLength = 0xb; 438 buf->Flags = DATA_PROTECT; 439 buf->AdditionalSenseCode = 0; 440 buf->AdditionalSenseCodeQualifier = 0; 441 } else { 442 buf->ErrorCode = 0; 443 buf->AdditionalSenseLength = 0; 444 buf->Flags = 0; 445 buf->AdditionalSenseCode = 0; 446 buf->AdditionalSenseCodeQualifier = 0; 447 } 448 } 449 450 451 /*********************************************************************** 452 * Transport routines 453 ***********************************************************************/ 454 455 /************************************************************************** 456 * isd200_set_srb(), isd200_srb_set_bufflen() 457 * 458 * Two helpers to facilitate in initialization of scsi_cmnd structure 459 * Will need to change when struct scsi_cmnd changes 460 */ 461 static void isd200_set_srb(struct isd200_info *info, 462 enum dma_data_direction dir, void* buff, unsigned bufflen) 463 { 464 struct scsi_cmnd *srb = &info->srb; 465 466 if (buff) 467 sg_init_one(&info->sg, buff, bufflen); 468 469 srb->sc_data_direction = dir; 470 srb->sdb.table.sgl = buff ? &info->sg : NULL; 471 srb->sdb.length = bufflen; 472 srb->sdb.table.nents = buff ? 1 : 0; 473 } 474 475 static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen) 476 { 477 srb->sdb.length = bufflen; 478 } 479 480 481 /************************************************************************** 482 * isd200_action 483 * 484 * Routine for sending commands to the isd200 485 * 486 * RETURNS: 487 * ISD status code 488 */ 489 static int isd200_action( struct us_data *us, int action, 490 void* pointer, int value ) 491 { 492 union ata_cdb ata; 493 /* static to prevent this large struct being placed on the valuable stack */ 494 static struct scsi_device srb_dev; 495 struct isd200_info *info = (struct isd200_info *)us->extra; 496 struct scsi_cmnd *srb = &info->srb; 497 int status; 498 499 memset(&ata, 0, sizeof(ata)); 500 srb->cmnd = info->cmnd; 501 srb->device = &srb_dev; 502 ++srb->serial_number; 503 504 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 505 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 506 ata.generic.TransferBlockSize = 1; 507 508 switch ( action ) { 509 case ACTION_READ_STATUS: 510 US_DEBUGP(" isd200_action(READ_STATUS)\n"); 511 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2; 512 ata.generic.RegisterSelect = 513 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 514 REG_STATUS | REG_ERROR; 515 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value); 516 break; 517 518 case ACTION_ENUM: 519 US_DEBUGP(" isd200_action(ENUM,0x%02x)\n",value); 520 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2| 521 ACTION_SELECT_3|ACTION_SELECT_4| 522 ACTION_SELECT_5; 523 ata.generic.RegisterSelect = REG_DEVICE_HEAD; 524 ata.write.DeviceHeadByte = value; 525 isd200_set_srb(info, DMA_NONE, NULL, 0); 526 break; 527 528 case ACTION_RESET: 529 US_DEBUGP(" isd200_action(RESET)\n"); 530 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2| 531 ACTION_SELECT_3|ACTION_SELECT_4; 532 ata.generic.RegisterSelect = REG_DEVICE_CONTROL; 533 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER; 534 isd200_set_srb(info, DMA_NONE, NULL, 0); 535 break; 536 537 case ACTION_REENABLE: 538 US_DEBUGP(" isd200_action(REENABLE)\n"); 539 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2| 540 ACTION_SELECT_3|ACTION_SELECT_4; 541 ata.generic.RegisterSelect = REG_DEVICE_CONTROL; 542 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER; 543 isd200_set_srb(info, DMA_NONE, NULL, 0); 544 break; 545 546 case ACTION_SOFT_RESET: 547 US_DEBUGP(" isd200_action(SOFT_RESET)\n"); 548 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5; 549 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND; 550 ata.write.DeviceHeadByte = info->DeviceHead; 551 ata.write.CommandByte = ATA_CMD_DEV_RESET; 552 isd200_set_srb(info, DMA_NONE, NULL, 0); 553 break; 554 555 case ACTION_IDENTIFY: 556 US_DEBUGP(" isd200_action(IDENTIFY)\n"); 557 ata.generic.RegisterSelect = REG_COMMAND; 558 ata.write.CommandByte = ATA_CMD_ID_ATA; 559 isd200_set_srb(info, DMA_FROM_DEVICE, info->id, 560 ATA_ID_WORDS * 2); 561 break; 562 563 default: 564 US_DEBUGP("Error: Undefined action %d\n",action); 565 return ISD200_ERROR; 566 } 567 568 memcpy(srb->cmnd, &ata, sizeof(ata.generic)); 569 srb->cmd_len = sizeof(ata.generic); 570 status = usb_stor_Bulk_transport(srb, us); 571 if (status == USB_STOR_TRANSPORT_GOOD) 572 status = ISD200_GOOD; 573 else { 574 US_DEBUGP(" isd200_action(0x%02x) error: %d\n",action,status); 575 status = ISD200_ERROR; 576 /* need to reset device here */ 577 } 578 579 return status; 580 } 581 582 /************************************************************************** 583 * isd200_read_regs 584 * 585 * Read ATA Registers 586 * 587 * RETURNS: 588 * ISD status code 589 */ 590 static int isd200_read_regs( struct us_data *us ) 591 { 592 struct isd200_info *info = (struct isd200_info *)us->extra; 593 int retStatus = ISD200_GOOD; 594 int transferStatus; 595 596 US_DEBUGP("Entering isd200_IssueATAReadRegs\n"); 597 598 transferStatus = isd200_action( us, ACTION_READ_STATUS, 599 info->RegsBuf, sizeof(info->ATARegs) ); 600 if (transferStatus != ISD200_TRANSPORT_GOOD) { 601 US_DEBUGP(" Error reading ATA registers\n"); 602 retStatus = ISD200_ERROR; 603 } else { 604 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs)); 605 US_DEBUGP(" Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n", 606 info->ATARegs[ATA_REG_ERROR_OFFSET]); 607 } 608 609 return retStatus; 610 } 611 612 613 /************************************************************************** 614 * Invoke the transport and basic error-handling/recovery methods 615 * 616 * This is used by the protocol layers to actually send the message to 617 * the device and receive the response. 618 */ 619 static void isd200_invoke_transport( struct us_data *us, 620 struct scsi_cmnd *srb, 621 union ata_cdb *ataCdb ) 622 { 623 int need_auto_sense = 0; 624 int transferStatus; 625 int result; 626 627 /* send the command to the transport layer */ 628 memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic)); 629 srb->cmd_len = sizeof(ataCdb->generic); 630 transferStatus = usb_stor_Bulk_transport(srb, us); 631 632 /* if the command gets aborted by the higher layers, we need to 633 * short-circuit all other processing 634 */ 635 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { 636 US_DEBUGP("-- command was aborted\n"); 637 goto Handle_Abort; 638 } 639 640 switch (transferStatus) { 641 642 case USB_STOR_TRANSPORT_GOOD: 643 /* Indicate a good result */ 644 srb->result = SAM_STAT_GOOD; 645 break; 646 647 case USB_STOR_TRANSPORT_NO_SENSE: 648 US_DEBUGP("-- transport indicates protocol failure\n"); 649 srb->result = SAM_STAT_CHECK_CONDITION; 650 return; 651 652 case USB_STOR_TRANSPORT_FAILED: 653 US_DEBUGP("-- transport indicates command failure\n"); 654 need_auto_sense = 1; 655 break; 656 657 case USB_STOR_TRANSPORT_ERROR: 658 US_DEBUGP("-- transport indicates transport error\n"); 659 srb->result = DID_ERROR << 16; 660 /* Need reset here */ 661 return; 662 663 default: 664 US_DEBUGP("-- transport indicates unknown error\n"); 665 srb->result = DID_ERROR << 16; 666 /* Need reset here */ 667 return; 668 } 669 670 if ((scsi_get_resid(srb) > 0) && 671 !((srb->cmnd[0] == REQUEST_SENSE) || 672 (srb->cmnd[0] == INQUIRY) || 673 (srb->cmnd[0] == MODE_SENSE) || 674 (srb->cmnd[0] == LOG_SENSE) || 675 (srb->cmnd[0] == MODE_SENSE_10))) { 676 US_DEBUGP("-- unexpectedly short transfer\n"); 677 need_auto_sense = 1; 678 } 679 680 if (need_auto_sense) { 681 result = isd200_read_regs(us); 682 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { 683 US_DEBUGP("-- auto-sense aborted\n"); 684 goto Handle_Abort; 685 } 686 if (result == ISD200_GOOD) { 687 isd200_build_sense(us, srb); 688 srb->result = SAM_STAT_CHECK_CONDITION; 689 690 /* If things are really okay, then let's show that */ 691 if ((srb->sense_buffer[2] & 0xf) == 0x0) 692 srb->result = SAM_STAT_GOOD; 693 } else { 694 srb->result = DID_ERROR << 16; 695 /* Need reset here */ 696 } 697 } 698 699 /* Regardless of auto-sense, if we _know_ we have an error 700 * condition, show that in the result code 701 */ 702 if (transferStatus == USB_STOR_TRANSPORT_FAILED) 703 srb->result = SAM_STAT_CHECK_CONDITION; 704 return; 705 706 /* abort processing: the bulk-only transport requires a reset 707 * following an abort */ 708 Handle_Abort: 709 srb->result = DID_ABORT << 16; 710 711 /* permit the reset transfer to take place */ 712 clear_bit(US_FLIDX_ABORTING, &us->dflags); 713 /* Need reset here */ 714 } 715 716 #ifdef CONFIG_USB_STORAGE_DEBUG 717 static void isd200_log_config( struct isd200_info* info ) 718 { 719 US_DEBUGP(" Event Notification: 0x%x\n", 720 info->ConfigData.EventNotification); 721 US_DEBUGP(" External Clock: 0x%x\n", 722 info->ConfigData.ExternalClock); 723 US_DEBUGP(" ATA Init Timeout: 0x%x\n", 724 info->ConfigData.ATAInitTimeout); 725 US_DEBUGP(" ATAPI Command Block Size: 0x%x\n", 726 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6); 727 US_DEBUGP(" Master/Slave Selection: 0x%x\n", 728 info->ConfigData.ATAConfig & ATACFG_MASTER); 729 US_DEBUGP(" ATAPI Reset: 0x%x\n", 730 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET); 731 US_DEBUGP(" ATA Timing: 0x%x\n", 732 info->ConfigData.ATAConfig & ATACFG_TIMING); 733 US_DEBUGP(" ATA Major Command: 0x%x\n", 734 info->ConfigData.ATAMajorCommand); 735 US_DEBUGP(" ATA Minor Command: 0x%x\n", 736 info->ConfigData.ATAMinorCommand); 737 US_DEBUGP(" Init Status: 0x%x\n", 738 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS); 739 US_DEBUGP(" Config Descriptor 2: 0x%x\n", 740 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2); 741 US_DEBUGP(" Skip Device Boot: 0x%x\n", 742 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT); 743 US_DEBUGP(" ATA 3 State Supsend: 0x%x\n", 744 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND); 745 US_DEBUGP(" Descriptor Override: 0x%x\n", 746 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE); 747 US_DEBUGP(" Last LUN Identifier: 0x%x\n", 748 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN); 749 US_DEBUGP(" SRST Enable: 0x%x\n", 750 info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST); 751 } 752 #endif 753 754 /************************************************************************** 755 * isd200_write_config 756 * 757 * Write the ISD200 Configuration data 758 * 759 * RETURNS: 760 * ISD status code 761 */ 762 static int isd200_write_config( struct us_data *us ) 763 { 764 struct isd200_info *info = (struct isd200_info *)us->extra; 765 int retStatus = ISD200_GOOD; 766 int result; 767 768 #ifdef CONFIG_USB_STORAGE_DEBUG 769 US_DEBUGP("Entering isd200_write_config\n"); 770 US_DEBUGP(" Writing the following ISD200 Config Data:\n"); 771 isd200_log_config(info); 772 #endif 773 774 /* let's send the command via the control pipe */ 775 result = usb_stor_ctrl_transfer( 776 us, 777 us->send_ctrl_pipe, 778 0x01, 779 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 780 0x0000, 781 0x0002, 782 (void *) &info->ConfigData, 783 sizeof(info->ConfigData)); 784 785 if (result >= 0) { 786 US_DEBUGP(" ISD200 Config Data was written successfully\n"); 787 } else { 788 US_DEBUGP(" Request to write ISD200 Config Data failed!\n"); 789 retStatus = ISD200_ERROR; 790 } 791 792 US_DEBUGP("Leaving isd200_write_config %08X\n", retStatus); 793 return retStatus; 794 } 795 796 797 /************************************************************************** 798 * isd200_read_config 799 * 800 * Reads the ISD200 Configuration data 801 * 802 * RETURNS: 803 * ISD status code 804 */ 805 static int isd200_read_config( struct us_data *us ) 806 { 807 struct isd200_info *info = (struct isd200_info *)us->extra; 808 int retStatus = ISD200_GOOD; 809 int result; 810 811 US_DEBUGP("Entering isd200_read_config\n"); 812 813 /* read the configuration information from ISD200. Use this to */ 814 /* determine what the special ATA CDB bytes are. */ 815 816 result = usb_stor_ctrl_transfer( 817 us, 818 us->recv_ctrl_pipe, 819 0x02, 820 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 821 0x0000, 822 0x0002, 823 (void *) &info->ConfigData, 824 sizeof(info->ConfigData)); 825 826 827 if (result >= 0) { 828 US_DEBUGP(" Retrieved the following ISD200 Config Data:\n"); 829 #ifdef CONFIG_USB_STORAGE_DEBUG 830 isd200_log_config(info); 831 #endif 832 } else { 833 US_DEBUGP(" Request to get ISD200 Config Data failed!\n"); 834 retStatus = ISD200_ERROR; 835 } 836 837 US_DEBUGP("Leaving isd200_read_config %08X\n", retStatus); 838 return retStatus; 839 } 840 841 842 /************************************************************************** 843 * isd200_atapi_soft_reset 844 * 845 * Perform an Atapi Soft Reset on the device 846 * 847 * RETURNS: 848 * NT status code 849 */ 850 static int isd200_atapi_soft_reset( struct us_data *us ) 851 { 852 int retStatus = ISD200_GOOD; 853 int transferStatus; 854 855 US_DEBUGP("Entering isd200_atapi_soft_reset\n"); 856 857 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 ); 858 if (transferStatus != ISD200_TRANSPORT_GOOD) { 859 US_DEBUGP(" Error issuing Atapi Soft Reset\n"); 860 retStatus = ISD200_ERROR; 861 } 862 863 US_DEBUGP("Leaving isd200_atapi_soft_reset %08X\n", retStatus); 864 return retStatus; 865 } 866 867 868 /************************************************************************** 869 * isd200_srst 870 * 871 * Perform an SRST on the device 872 * 873 * RETURNS: 874 * ISD status code 875 */ 876 static int isd200_srst( struct us_data *us ) 877 { 878 int retStatus = ISD200_GOOD; 879 int transferStatus; 880 881 US_DEBUGP("Entering isd200_SRST\n"); 882 883 transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 ); 884 885 /* check to see if this request failed */ 886 if (transferStatus != ISD200_TRANSPORT_GOOD) { 887 US_DEBUGP(" Error issuing SRST\n"); 888 retStatus = ISD200_ERROR; 889 } else { 890 /* delay 10ms to give the drive a chance to see it */ 891 msleep(10); 892 893 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 ); 894 if (transferStatus != ISD200_TRANSPORT_GOOD) { 895 US_DEBUGP(" Error taking drive out of reset\n"); 896 retStatus = ISD200_ERROR; 897 } else { 898 /* delay 50ms to give the drive a chance to recover after SRST */ 899 msleep(50); 900 } 901 } 902 903 US_DEBUGP("Leaving isd200_srst %08X\n", retStatus); 904 return retStatus; 905 } 906 907 908 /************************************************************************** 909 * isd200_try_enum 910 * 911 * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS 912 * and tries to analyze the status registers 913 * 914 * RETURNS: 915 * ISD status code 916 */ 917 static int isd200_try_enum(struct us_data *us, unsigned char master_slave, 918 int detect ) 919 { 920 int status = ISD200_GOOD; 921 unsigned long endTime; 922 struct isd200_info *info = (struct isd200_info *)us->extra; 923 unsigned char *regs = info->RegsBuf; 924 int recheckAsMaster = 0; 925 926 if ( detect ) 927 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ; 928 else 929 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ; 930 931 /* loop until we detect !BSY or timeout */ 932 while(1) { 933 #ifdef CONFIG_USB_STORAGE_DEBUG 934 char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ? 935 "Master" : "Slave"; 936 #endif 937 938 status = isd200_action( us, ACTION_ENUM, NULL, master_slave ); 939 if ( status != ISD200_GOOD ) 940 break; 941 942 status = isd200_action( us, ACTION_READ_STATUS, 943 regs, 8 ); 944 if ( status != ISD200_GOOD ) 945 break; 946 947 if (!detect) { 948 if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) { 949 US_DEBUGP(" %s status is still BSY, try again...\n",mstr); 950 } else { 951 US_DEBUGP(" %s status !BSY, continue with next operation\n",mstr); 952 break; 953 } 954 } 955 /* check for ATA_BUSY and */ 956 /* ATA_DF (workaround ATA Zip drive) and */ 957 /* ATA_ERR (workaround for Archos CD-ROM) */ 958 else if (regs[ATA_REG_STATUS_OFFSET] & 959 (ATA_BUSY | ATA_DF | ATA_ERR)) { 960 US_DEBUGP(" Status indicates it is not ready, try again...\n"); 961 } 962 /* check for DRDY, ATA devices set DRDY after SRST */ 963 else if (regs[ATA_REG_STATUS_OFFSET] & ATA_DRDY) { 964 US_DEBUGP(" Identified ATA device\n"); 965 info->DeviceFlags |= DF_ATA_DEVICE; 966 info->DeviceHead = master_slave; 967 break; 968 } 969 /* check Cylinder High/Low to 970 determine if it is an ATAPI device 971 */ 972 else if (regs[ATA_REG_HCYL_OFFSET] == 0xEB && 973 regs[ATA_REG_LCYL_OFFSET] == 0x14) { 974 /* It seems that the RICOH 975 MP6200A CD/RW drive will 976 report itself okay as a 977 slave when it is really a 978 master. So this check again 979 as a master device just to 980 make sure it doesn't report 981 itself okay as a master also 982 */ 983 if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) && 984 !recheckAsMaster) { 985 US_DEBUGP(" Identified ATAPI device as slave. Rechecking again as master\n"); 986 recheckAsMaster = 1; 987 master_slave = ATA_ADDRESS_DEVHEAD_STD; 988 } else { 989 US_DEBUGP(" Identified ATAPI device\n"); 990 info->DeviceHead = master_slave; 991 992 status = isd200_atapi_soft_reset(us); 993 break; 994 } 995 } else { 996 US_DEBUGP(" Not ATA, not ATAPI. Weird.\n"); 997 break; 998 } 999 1000 /* check for timeout on this request */ 1001 if (time_after_eq(jiffies, endTime)) { 1002 if (!detect) 1003 US_DEBUGP(" BSY check timeout, just continue with next operation...\n"); 1004 else 1005 US_DEBUGP(" Device detect timeout!\n"); 1006 break; 1007 } 1008 } 1009 1010 return status; 1011 } 1012 1013 /************************************************************************** 1014 * isd200_manual_enum 1015 * 1016 * Determines if the drive attached is an ATA or ATAPI and if it is a 1017 * master or slave. 1018 * 1019 * RETURNS: 1020 * ISD status code 1021 */ 1022 static int isd200_manual_enum(struct us_data *us) 1023 { 1024 struct isd200_info *info = (struct isd200_info *)us->extra; 1025 int retStatus = ISD200_GOOD; 1026 1027 US_DEBUGP("Entering isd200_manual_enum\n"); 1028 1029 retStatus = isd200_read_config(us); 1030 if (retStatus == ISD200_GOOD) { 1031 int isslave; 1032 /* master or slave? */ 1033 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0); 1034 if (retStatus == ISD200_GOOD) 1035 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0); 1036 1037 if (retStatus == ISD200_GOOD) { 1038 retStatus = isd200_srst(us); 1039 if (retStatus == ISD200_GOOD) 1040 /* ata or atapi? */ 1041 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1); 1042 } 1043 1044 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0; 1045 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) { 1046 US_DEBUGP(" Setting Master/Slave selection to %d\n", isslave); 1047 info->ConfigData.ATAConfig &= 0x3f; 1048 info->ConfigData.ATAConfig |= (isslave<<6); 1049 retStatus = isd200_write_config(us); 1050 } 1051 } 1052 1053 US_DEBUGP("Leaving isd200_manual_enum %08X\n", retStatus); 1054 return(retStatus); 1055 } 1056 1057 static void isd200_fix_driveid(u16 *id) 1058 { 1059 #ifndef __LITTLE_ENDIAN 1060 # ifdef __BIG_ENDIAN 1061 int i; 1062 1063 for (i = 0; i < ATA_ID_WORDS; i++) 1064 id[i] = __le16_to_cpu(id[i]); 1065 # else 1066 # error "Please fix <asm/byteorder.h>" 1067 # endif 1068 #endif 1069 } 1070 1071 static void isd200_dump_driveid(u16 *id) 1072 { 1073 US_DEBUGP(" Identify Data Structure:\n"); 1074 US_DEBUGP(" config = 0x%x\n", id[ATA_ID_CONFIG]); 1075 US_DEBUGP(" cyls = 0x%x\n", id[ATA_ID_CYLS]); 1076 US_DEBUGP(" heads = 0x%x\n", id[ATA_ID_HEADS]); 1077 US_DEBUGP(" track_bytes = 0x%x\n", id[4]); 1078 US_DEBUGP(" sector_bytes = 0x%x\n", id[5]); 1079 US_DEBUGP(" sectors = 0x%x\n", id[ATA_ID_SECTORS]); 1080 US_DEBUGP(" serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]); 1081 US_DEBUGP(" buf_type = 0x%x\n", id[20]); 1082 US_DEBUGP(" buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]); 1083 US_DEBUGP(" ecc_bytes = 0x%x\n", id[22]); 1084 US_DEBUGP(" fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]); 1085 US_DEBUGP(" model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]); 1086 US_DEBUGP(" max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff); 1087 US_DEBUGP(" dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]); 1088 US_DEBUGP(" capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8); 1089 US_DEBUGP(" tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8); 1090 US_DEBUGP(" tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8); 1091 US_DEBUGP(" field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]); 1092 US_DEBUGP(" cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]); 1093 US_DEBUGP(" cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]); 1094 US_DEBUGP(" cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]); 1095 US_DEBUGP(" cur_capacity = 0x%x\n", ata_id_u32(id, 57)); 1096 US_DEBUGP(" multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff); 1097 US_DEBUGP(" lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY)); 1098 US_DEBUGP(" command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]); 1099 US_DEBUGP(" command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]); 1100 } 1101 1102 /************************************************************************** 1103 * isd200_get_inquiry_data 1104 * 1105 * Get inquiry data 1106 * 1107 * RETURNS: 1108 * ISD status code 1109 */ 1110 static int isd200_get_inquiry_data( struct us_data *us ) 1111 { 1112 struct isd200_info *info = (struct isd200_info *)us->extra; 1113 int retStatus = ISD200_GOOD; 1114 u16 *id = info->id; 1115 1116 US_DEBUGP("Entering isd200_get_inquiry_data\n"); 1117 1118 /* set default to Master */ 1119 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD; 1120 1121 /* attempt to manually enumerate this device */ 1122 retStatus = isd200_manual_enum(us); 1123 if (retStatus == ISD200_GOOD) { 1124 int transferStatus; 1125 1126 /* check for an ATA device */ 1127 if (info->DeviceFlags & DF_ATA_DEVICE) { 1128 /* this must be an ATA device */ 1129 /* perform an ATA Command Identify */ 1130 transferStatus = isd200_action( us, ACTION_IDENTIFY, 1131 id, ATA_ID_WORDS * 2); 1132 if (transferStatus != ISD200_TRANSPORT_GOOD) { 1133 /* Error issuing ATA Command Identify */ 1134 US_DEBUGP(" Error issuing ATA Command Identify\n"); 1135 retStatus = ISD200_ERROR; 1136 } else { 1137 /* ATA Command Identify successful */ 1138 int i; 1139 __be16 *src; 1140 __u16 *dest; 1141 1142 isd200_fix_driveid(id); 1143 isd200_dump_driveid(id); 1144 1145 memset(&info->InquiryData, 0, sizeof(info->InquiryData)); 1146 1147 /* Standard IDE interface only supports disks */ 1148 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE; 1149 1150 /* The length must be at least 36 (5 + 31) */ 1151 info->InquiryData.AdditionalLength = 0x1F; 1152 1153 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) { 1154 /* set the removable bit */ 1155 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE; 1156 info->DeviceFlags |= DF_REMOVABLE_MEDIA; 1157 } 1158 1159 /* Fill in vendor identification fields */ 1160 src = (__be16 *)&id[ATA_ID_PROD]; 1161 dest = (__u16*)info->InquiryData.VendorId; 1162 for (i=0;i<4;i++) 1163 dest[i] = be16_to_cpu(src[i]); 1164 1165 src = (__be16 *)&id[ATA_ID_PROD + 8/2]; 1166 dest = (__u16*)info->InquiryData.ProductId; 1167 for (i=0;i<8;i++) 1168 dest[i] = be16_to_cpu(src[i]); 1169 1170 src = (__be16 *)&id[ATA_ID_FW_REV]; 1171 dest = (__u16*)info->InquiryData.ProductRevisionLevel; 1172 for (i=0;i<2;i++) 1173 dest[i] = be16_to_cpu(src[i]); 1174 1175 /* determine if it supports Media Status Notification */ 1176 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) { 1177 US_DEBUGP(" Device supports Media Status Notification\n"); 1178 1179 /* Indicate that it is enabled, even though it is not 1180 * This allows the lock/unlock of the media to work 1181 * correctly. 1182 */ 1183 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED; 1184 } 1185 else 1186 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED; 1187 1188 } 1189 } else { 1190 /* 1191 * this must be an ATAPI device 1192 * use an ATAPI protocol (Transparent SCSI) 1193 */ 1194 us->protocol_name = "Transparent SCSI"; 1195 us->proto_handler = usb_stor_transparent_scsi_command; 1196 1197 US_DEBUGP("Protocol changed to: %s\n", us->protocol_name); 1198 1199 /* Free driver structure */ 1200 us->extra_destructor(info); 1201 kfree(info); 1202 us->extra = NULL; 1203 us->extra_destructor = NULL; 1204 } 1205 } 1206 1207 US_DEBUGP("Leaving isd200_get_inquiry_data %08X\n", retStatus); 1208 1209 return(retStatus); 1210 } 1211 1212 /************************************************************************** 1213 * isd200_scsi_to_ata 1214 * 1215 * Translate SCSI commands to ATA commands. 1216 * 1217 * RETURNS: 1218 * 1 if the command needs to be sent to the transport layer 1219 * 0 otherwise 1220 */ 1221 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us, 1222 union ata_cdb * ataCdb) 1223 { 1224 struct isd200_info *info = (struct isd200_info *)us->extra; 1225 u16 *id = info->id; 1226 int sendToTransport = 1; 1227 unsigned char sectnum, head; 1228 unsigned short cylinder; 1229 unsigned long lba; 1230 unsigned long blockCount; 1231 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 1232 1233 memset(ataCdb, 0, sizeof(union ata_cdb)); 1234 1235 /* SCSI Command */ 1236 switch (srb->cmnd[0]) { 1237 case INQUIRY: 1238 US_DEBUGP(" ATA OUT - INQUIRY\n"); 1239 1240 /* copy InquiryData */ 1241 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData, 1242 sizeof(info->InquiryData), srb); 1243 srb->result = SAM_STAT_GOOD; 1244 sendToTransport = 0; 1245 break; 1246 1247 case MODE_SENSE: 1248 US_DEBUGP(" ATA OUT - SCSIOP_MODE_SENSE\n"); 1249 1250 /* Initialize the return buffer */ 1251 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb); 1252 1253 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED) 1254 { 1255 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1256 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1257 ataCdb->generic.TransferBlockSize = 1; 1258 ataCdb->generic.RegisterSelect = REG_COMMAND; 1259 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1260 isd200_srb_set_bufflen(srb, 0); 1261 } else { 1262 US_DEBUGP(" Media Status not supported, just report okay\n"); 1263 srb->result = SAM_STAT_GOOD; 1264 sendToTransport = 0; 1265 } 1266 break; 1267 1268 case TEST_UNIT_READY: 1269 US_DEBUGP(" ATA OUT - SCSIOP_TEST_UNIT_READY\n"); 1270 1271 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED) 1272 { 1273 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1274 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1275 ataCdb->generic.TransferBlockSize = 1; 1276 ataCdb->generic.RegisterSelect = REG_COMMAND; 1277 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1278 isd200_srb_set_bufflen(srb, 0); 1279 } else { 1280 US_DEBUGP(" Media Status not supported, just report okay\n"); 1281 srb->result = SAM_STAT_GOOD; 1282 sendToTransport = 0; 1283 } 1284 break; 1285 1286 case READ_CAPACITY: 1287 { 1288 unsigned long capacity; 1289 struct read_capacity_data readCapacityData; 1290 1291 US_DEBUGP(" ATA OUT - SCSIOP_READ_CAPACITY\n"); 1292 1293 if (ata_id_has_lba(id)) 1294 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1; 1295 else 1296 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] * 1297 id[ATA_ID_SECTORS]) - 1; 1298 1299 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity); 1300 readCapacityData.BytesPerBlock = cpu_to_be32(0x200); 1301 1302 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData, 1303 sizeof(readCapacityData), srb); 1304 srb->result = SAM_STAT_GOOD; 1305 sendToTransport = 0; 1306 } 1307 break; 1308 1309 case READ_10: 1310 US_DEBUGP(" ATA OUT - SCSIOP_READ\n"); 1311 1312 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]); 1313 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8]; 1314 1315 if (ata_id_has_lba(id)) { 1316 sectnum = (unsigned char)(lba); 1317 cylinder = (unsigned short)(lba>>8); 1318 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F); 1319 } else { 1320 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1); 1321 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] * 1322 id[ATA_ID_HEADS])); 1323 head = (u8)((lba / id[ATA_ID_SECTORS]) % 1324 id[ATA_ID_HEADS]); 1325 } 1326 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1327 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1328 ataCdb->generic.TransferBlockSize = 1; 1329 ataCdb->generic.RegisterSelect = 1330 REG_SECTOR_COUNT | REG_SECTOR_NUMBER | 1331 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 1332 REG_DEVICE_HEAD | REG_COMMAND; 1333 ataCdb->write.SectorCountByte = (unsigned char)blockCount; 1334 ataCdb->write.SectorNumberByte = sectnum; 1335 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8); 1336 ataCdb->write.CylinderLowByte = (unsigned char)cylinder; 1337 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD); 1338 ataCdb->write.CommandByte = ATA_CMD_PIO_READ; 1339 break; 1340 1341 case WRITE_10: 1342 US_DEBUGP(" ATA OUT - SCSIOP_WRITE\n"); 1343 1344 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]); 1345 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8]; 1346 1347 if (ata_id_has_lba(id)) { 1348 sectnum = (unsigned char)(lba); 1349 cylinder = (unsigned short)(lba>>8); 1350 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F); 1351 } else { 1352 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1); 1353 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] * 1354 id[ATA_ID_HEADS])); 1355 head = (u8)((lba / id[ATA_ID_SECTORS]) % 1356 id[ATA_ID_HEADS]); 1357 } 1358 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1359 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1360 ataCdb->generic.TransferBlockSize = 1; 1361 ataCdb->generic.RegisterSelect = 1362 REG_SECTOR_COUNT | REG_SECTOR_NUMBER | 1363 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 1364 REG_DEVICE_HEAD | REG_COMMAND; 1365 ataCdb->write.SectorCountByte = (unsigned char)blockCount; 1366 ataCdb->write.SectorNumberByte = sectnum; 1367 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8); 1368 ataCdb->write.CylinderLowByte = (unsigned char)cylinder; 1369 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD); 1370 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE; 1371 break; 1372 1373 case ALLOW_MEDIUM_REMOVAL: 1374 US_DEBUGP(" ATA OUT - SCSIOP_MEDIUM_REMOVAL\n"); 1375 1376 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) { 1377 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]); 1378 1379 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1380 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1381 ataCdb->generic.TransferBlockSize = 1; 1382 ataCdb->generic.RegisterSelect = REG_COMMAND; 1383 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ? 1384 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK; 1385 isd200_srb_set_bufflen(srb, 0); 1386 } else { 1387 US_DEBUGP(" Not removeable media, just report okay\n"); 1388 srb->result = SAM_STAT_GOOD; 1389 sendToTransport = 0; 1390 } 1391 break; 1392 1393 case START_STOP: 1394 US_DEBUGP(" ATA OUT - SCSIOP_START_STOP_UNIT\n"); 1395 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]); 1396 1397 if ((srb->cmnd[4] & 0x3) == 0x2) { 1398 US_DEBUGP(" Media Eject\n"); 1399 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1400 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1401 ataCdb->generic.TransferBlockSize = 0; 1402 ataCdb->generic.RegisterSelect = REG_COMMAND; 1403 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT; 1404 } else if ((srb->cmnd[4] & 0x3) == 0x1) { 1405 US_DEBUGP(" Get Media Status\n"); 1406 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1407 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1408 ataCdb->generic.TransferBlockSize = 1; 1409 ataCdb->generic.RegisterSelect = REG_COMMAND; 1410 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1411 isd200_srb_set_bufflen(srb, 0); 1412 } else { 1413 US_DEBUGP(" Nothing to do, just report okay\n"); 1414 srb->result = SAM_STAT_GOOD; 1415 sendToTransport = 0; 1416 } 1417 break; 1418 1419 default: 1420 US_DEBUGP("Unsupported SCSI command - 0x%X\n", 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 int retStatus = ISD200_GOOD; 1457 struct isd200_info *info; 1458 1459 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL); 1460 if (!info) 1461 retStatus = ISD200_ERROR; 1462 else { 1463 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL); 1464 info->RegsBuf = (unsigned char *) 1465 kmalloc(sizeof(info->ATARegs), GFP_KERNEL); 1466 info->srb.sense_buffer = 1467 kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL); 1468 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) { 1469 isd200_free_info_ptrs(info); 1470 kfree(info); 1471 retStatus = ISD200_ERROR; 1472 } 1473 } 1474 1475 if (retStatus == ISD200_GOOD) { 1476 us->extra = info; 1477 us->extra_destructor = isd200_free_info_ptrs; 1478 } else 1479 US_DEBUGP("ERROR - kmalloc failure\n"); 1480 1481 return retStatus; 1482 } 1483 1484 /************************************************************************** 1485 * Initialization for the ISD200 1486 */ 1487 1488 static int isd200_Initialization(struct us_data *us) 1489 { 1490 US_DEBUGP("ISD200 Initialization...\n"); 1491 1492 /* Initialize ISD200 info struct */ 1493 1494 if (isd200_init_info(us) == ISD200_ERROR) { 1495 US_DEBUGP("ERROR Initializing ISD200 Info struct\n"); 1496 } else { 1497 /* Get device specific data */ 1498 1499 if (isd200_get_inquiry_data(us) != ISD200_GOOD) 1500 US_DEBUGP("ISD200 Initialization Failure\n"); 1501 else 1502 US_DEBUGP("ISD200 Initialization complete\n"); 1503 } 1504 1505 return 0; 1506 } 1507 1508 1509 /************************************************************************** 1510 * Protocol and Transport for the ISD200 ASIC 1511 * 1512 * This protocol and transport are for ATA devices connected to an ISD200 1513 * ASIC. An ATAPI device that is conected as a slave device will be 1514 * detected in the driver initialization function and the protocol will 1515 * be changed to an ATAPI protocol (Transparent SCSI). 1516 * 1517 */ 1518 1519 static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us) 1520 { 1521 int sendToTransport = 1, orig_bufflen; 1522 union ata_cdb ataCdb; 1523 1524 /* Make sure driver was initialized */ 1525 1526 if (us->extra == NULL) 1527 US_DEBUGP("ERROR Driver not initialized\n"); 1528 1529 scsi_set_resid(srb, 0); 1530 /* scsi_bufflen might change in protocol translation to ata */ 1531 orig_bufflen = scsi_bufflen(srb); 1532 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb); 1533 1534 /* send the command to the transport layer */ 1535 if (sendToTransport) 1536 isd200_invoke_transport(us, srb, &ataCdb); 1537 1538 isd200_srb_set_bufflen(srb, orig_bufflen); 1539 } 1540 1541 static int isd200_probe(struct usb_interface *intf, 1542 const struct usb_device_id *id) 1543 { 1544 struct us_data *us; 1545 int result; 1546 1547 result = usb_stor_probe1(&us, intf, id, 1548 (id - isd200_usb_ids) + isd200_unusual_dev_list); 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 = "ums-isd200", 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 }; 1571 1572 static int __init isd200_init(void) 1573 { 1574 return usb_register(&isd200_driver); 1575 } 1576 1577 static void __exit isd200_exit(void) 1578 { 1579 usb_deregister(&isd200_driver); 1580 } 1581 1582 module_init(isd200_init); 1583 module_exit(isd200_exit); 1584