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 53MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC"); 54MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>"); 55MODULE_LICENSE("GPL"); 56MODULE_IMPORT_NS(USB_STORAGE); 57 58static 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 70static struct usb_device_id isd200_usb_ids[] = { 71# include "unusual_isd200.h" 72 { } /* Terminating entry */ 73}; 74MODULE_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 92static 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 193union 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 262struct 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 302struct 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 318struct 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 339struct 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 350struct 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 367struct 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 */ 399static 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 */ 449static 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 463static 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 */ 477static 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 */ 578static 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 */ 607static 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 709static 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 */ 754static 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 */ 797static 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 */ 842static 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 */ 868static 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 */ 909static 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 */ 1016static 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 1052static 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 1066static 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 */ 1105static int isd200_get_inquiry_data( struct us_data *us ) 1106{ 1107 struct isd200_info *info = (struct isd200_info *)us->extra; 1108 int retStatus = ISD200_GOOD; 1109 u16 *id = info->id; 1110 1111 usb_stor_dbg(us, "Entering isd200_get_inquiry_data\n"); 1112 1113 /* set default to Master */ 1114 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD; 1115 1116 /* attempt to manually enumerate this device */ 1117 retStatus = isd200_manual_enum(us); 1118 if (retStatus == ISD200_GOOD) { 1119 int transferStatus; 1120 1121 /* check for an ATA device */ 1122 if (info->DeviceFlags & DF_ATA_DEVICE) { 1123 /* this must be an ATA device */ 1124 /* perform an ATA Command Identify */ 1125 transferStatus = isd200_action( us, ACTION_IDENTIFY, 1126 id, ATA_ID_WORDS * 2); 1127 if (transferStatus != ISD200_TRANSPORT_GOOD) { 1128 /* Error issuing ATA Command Identify */ 1129 usb_stor_dbg(us, " Error issuing ATA Command Identify\n"); 1130 retStatus = ISD200_ERROR; 1131 } else { 1132 /* ATA Command Identify successful */ 1133 int i; 1134 __be16 *src; 1135 __u16 *dest; 1136 1137 isd200_fix_driveid(id); 1138 isd200_dump_driveid(us, id); 1139 1140 memset(&info->InquiryData, 0, sizeof(info->InquiryData)); 1141 1142 /* Standard IDE interface only supports disks */ 1143 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE; 1144 1145 /* The length must be at least 36 (5 + 31) */ 1146 info->InquiryData.AdditionalLength = 0x1F; 1147 1148 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) { 1149 /* set the removable bit */ 1150 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE; 1151 info->DeviceFlags |= DF_REMOVABLE_MEDIA; 1152 } 1153 1154 /* Fill in vendor identification fields */ 1155 src = (__be16 *)&id[ATA_ID_PROD]; 1156 dest = (__u16*)info->InquiryData.VendorId; 1157 for (i = 0; i < 4; i++) 1158 dest[i] = be16_to_cpu(src[i]); 1159 1160 src = (__be16 *)&id[ATA_ID_PROD + 8/2]; 1161 dest = (__u16*)info->InquiryData.ProductId; 1162 for (i=0;i<8;i++) 1163 dest[i] = be16_to_cpu(src[i]); 1164 1165 src = (__be16 *)&id[ATA_ID_FW_REV]; 1166 dest = (__u16*)info->InquiryData.ProductRevisionLevel; 1167 for (i=0;i<2;i++) 1168 dest[i] = be16_to_cpu(src[i]); 1169 1170 /* determine if it supports Media Status Notification */ 1171 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) { 1172 usb_stor_dbg(us, " Device supports Media Status Notification\n"); 1173 1174 /* 1175 * Indicate that it is enabled, even 1176 * though it is not. 1177 * This allows the lock/unlock of the 1178 * media to work correctly. 1179 */ 1180 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED; 1181 } 1182 else 1183 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED; 1184 1185 } 1186 } else { 1187 /* 1188 * this must be an ATAPI device 1189 * use an ATAPI protocol (Transparent SCSI) 1190 */ 1191 us->protocol_name = "Transparent SCSI"; 1192 us->proto_handler = usb_stor_transparent_scsi_command; 1193 1194 usb_stor_dbg(us, "Protocol changed to: %s\n", 1195 us->protocol_name); 1196 1197 /* Free driver structure */ 1198 us->extra_destructor(info); 1199 kfree(info); 1200 us->extra = NULL; 1201 us->extra_destructor = NULL; 1202 } 1203 } 1204 1205 usb_stor_dbg(us, "Leaving isd200_get_inquiry_data %08X\n", retStatus); 1206 1207 return(retStatus); 1208} 1209 1210/************************************************************************** 1211 * isd200_scsi_to_ata 1212 * 1213 * Translate SCSI commands to ATA commands. 1214 * 1215 * RETURNS: 1216 * 1 if the command needs to be sent to the transport layer 1217 * 0 otherwise 1218 */ 1219static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us, 1220 union ata_cdb * ataCdb) 1221{ 1222 struct isd200_info *info = (struct isd200_info *)us->extra; 1223 u16 *id = info->id; 1224 int sendToTransport = 1; 1225 unsigned char sectnum, head; 1226 unsigned short cylinder; 1227 unsigned long lba; 1228 unsigned long blockCount; 1229 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 1230 1231 memset(ataCdb, 0, sizeof(union ata_cdb)); 1232 1233 /* SCSI Command */ 1234 switch (srb->cmnd[0]) { 1235 case INQUIRY: 1236 usb_stor_dbg(us, " ATA OUT - INQUIRY\n"); 1237 1238 /* copy InquiryData */ 1239 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData, 1240 sizeof(info->InquiryData), srb); 1241 srb->result = SAM_STAT_GOOD; 1242 sendToTransport = 0; 1243 break; 1244 1245 case MODE_SENSE: 1246 usb_stor_dbg(us, " ATA OUT - SCSIOP_MODE_SENSE\n"); 1247 1248 /* Initialize the return buffer */ 1249 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb); 1250 1251 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED) 1252 { 1253 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1254 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1255 ataCdb->generic.TransferBlockSize = 1; 1256 ataCdb->generic.RegisterSelect = REG_COMMAND; 1257 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1258 isd200_srb_set_bufflen(srb, 0); 1259 } else { 1260 usb_stor_dbg(us, " Media Status not supported, just report okay\n"); 1261 srb->result = SAM_STAT_GOOD; 1262 sendToTransport = 0; 1263 } 1264 break; 1265 1266 case TEST_UNIT_READY: 1267 usb_stor_dbg(us, " ATA OUT - SCSIOP_TEST_UNIT_READY\n"); 1268 1269 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED) 1270 { 1271 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1272 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1273 ataCdb->generic.TransferBlockSize = 1; 1274 ataCdb->generic.RegisterSelect = REG_COMMAND; 1275 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1276 isd200_srb_set_bufflen(srb, 0); 1277 } else { 1278 usb_stor_dbg(us, " Media Status not supported, just report okay\n"); 1279 srb->result = SAM_STAT_GOOD; 1280 sendToTransport = 0; 1281 } 1282 break; 1283 1284 case READ_CAPACITY: 1285 { 1286 unsigned long capacity; 1287 struct read_capacity_data readCapacityData; 1288 1289 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ_CAPACITY\n"); 1290 1291 if (ata_id_has_lba(id)) 1292 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1; 1293 else 1294 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] * 1295 id[ATA_ID_SECTORS]) - 1; 1296 1297 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity); 1298 readCapacityData.BytesPerBlock = cpu_to_be32(0x200); 1299 1300 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData, 1301 sizeof(readCapacityData), srb); 1302 srb->result = SAM_STAT_GOOD; 1303 sendToTransport = 0; 1304 } 1305 break; 1306 1307 case READ_10: 1308 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ\n"); 1309 1310 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]); 1311 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8]; 1312 1313 if (ata_id_has_lba(id)) { 1314 sectnum = (unsigned char)(lba); 1315 cylinder = (unsigned short)(lba>>8); 1316 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F); 1317 } else { 1318 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1); 1319 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] * 1320 id[ATA_ID_HEADS])); 1321 head = (u8)((lba / id[ATA_ID_SECTORS]) % 1322 id[ATA_ID_HEADS]); 1323 } 1324 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1325 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1326 ataCdb->generic.TransferBlockSize = 1; 1327 ataCdb->generic.RegisterSelect = 1328 REG_SECTOR_COUNT | REG_SECTOR_NUMBER | 1329 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 1330 REG_DEVICE_HEAD | REG_COMMAND; 1331 ataCdb->write.SectorCountByte = (unsigned char)blockCount; 1332 ataCdb->write.SectorNumberByte = sectnum; 1333 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8); 1334 ataCdb->write.CylinderLowByte = (unsigned char)cylinder; 1335 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD); 1336 ataCdb->write.CommandByte = ATA_CMD_PIO_READ; 1337 break; 1338 1339 case WRITE_10: 1340 usb_stor_dbg(us, " ATA OUT - SCSIOP_WRITE\n"); 1341 1342 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]); 1343 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8]; 1344 1345 if (ata_id_has_lba(id)) { 1346 sectnum = (unsigned char)(lba); 1347 cylinder = (unsigned short)(lba>>8); 1348 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F); 1349 } else { 1350 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1); 1351 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] * 1352 id[ATA_ID_HEADS])); 1353 head = (u8)((lba / id[ATA_ID_SECTORS]) % 1354 id[ATA_ID_HEADS]); 1355 } 1356 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1357 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1358 ataCdb->generic.TransferBlockSize = 1; 1359 ataCdb->generic.RegisterSelect = 1360 REG_SECTOR_COUNT | REG_SECTOR_NUMBER | 1361 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 1362 REG_DEVICE_HEAD | REG_COMMAND; 1363 ataCdb->write.SectorCountByte = (unsigned char)blockCount; 1364 ataCdb->write.SectorNumberByte = sectnum; 1365 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8); 1366 ataCdb->write.CylinderLowByte = (unsigned char)cylinder; 1367 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD); 1368 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE; 1369 break; 1370 1371 case ALLOW_MEDIUM_REMOVAL: 1372 usb_stor_dbg(us, " ATA OUT - SCSIOP_MEDIUM_REMOVAL\n"); 1373 1374 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) { 1375 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", 1376 srb->cmnd[4]); 1377 1378 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1379 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1380 ataCdb->generic.TransferBlockSize = 1; 1381 ataCdb->generic.RegisterSelect = REG_COMMAND; 1382 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ? 1383 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK; 1384 isd200_srb_set_bufflen(srb, 0); 1385 } else { 1386 usb_stor_dbg(us, " Not removable media, just report okay\n"); 1387 srb->result = SAM_STAT_GOOD; 1388 sendToTransport = 0; 1389 } 1390 break; 1391 1392 case START_STOP: 1393 usb_stor_dbg(us, " ATA OUT - SCSIOP_START_STOP_UNIT\n"); 1394 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", srb->cmnd[4]); 1395 1396 if ((srb->cmnd[4] & 0x3) == 0x2) { 1397 usb_stor_dbg(us, " Media Eject\n"); 1398 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1399 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1400 ataCdb->generic.TransferBlockSize = 0; 1401 ataCdb->generic.RegisterSelect = REG_COMMAND; 1402 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT; 1403 } else if ((srb->cmnd[4] & 0x3) == 0x1) { 1404 usb_stor_dbg(us, " Get Media Status\n"); 1405 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1406 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1407 ataCdb->generic.TransferBlockSize = 1; 1408 ataCdb->generic.RegisterSelect = REG_COMMAND; 1409 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1410 isd200_srb_set_bufflen(srb, 0); 1411 } else { 1412 usb_stor_dbg(us, " Nothing to do, just report okay\n"); 1413 srb->result = SAM_STAT_GOOD; 1414 sendToTransport = 0; 1415 } 1416 break; 1417 1418 default: 1419 usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n", 1420 srb->cmnd[0]); 1421 srb->result = DID_ERROR << 16; 1422 sendToTransport = 0; 1423 break; 1424 } 1425 1426 return(sendToTransport); 1427} 1428 1429 1430/************************************************************************** 1431 * isd200_free_info 1432 * 1433 * Frees the driver structure. 1434 */ 1435static 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 * error status code 1453 */ 1454static int isd200_init_info(struct us_data *us) 1455{ 1456 struct isd200_info *info; 1457 1458 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL); 1459 if (!info) 1460 return -ENOMEM; 1461 1462 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL); 1463 info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL); 1464 info->srb.sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL); 1465 1466 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) { 1467 isd200_free_info_ptrs(info); 1468 kfree(info); 1469 return -ENOMEM; 1470 } 1471 1472 us->extra = info; 1473 us->extra_destructor = isd200_free_info_ptrs; 1474 1475 return 0; 1476} 1477 1478/************************************************************************** 1479 * Initialization for the ISD200 1480 */ 1481 1482static int isd200_Initialization(struct us_data *us) 1483{ 1484 usb_stor_dbg(us, "ISD200 Initialization...\n"); 1485 1486 /* Initialize ISD200 info struct */ 1487 1488 if (isd200_init_info(us) == ISD200_ERROR) { 1489 usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n"); 1490 } else { 1491 /* Get device specific data */ 1492 1493 if (isd200_get_inquiry_data(us) != ISD200_GOOD) 1494 usb_stor_dbg(us, "ISD200 Initialization Failure\n"); 1495 else 1496 usb_stor_dbg(us, "ISD200 Initialization complete\n"); 1497 } 1498 1499 return 0; 1500} 1501 1502 1503/************************************************************************** 1504 * Protocol and Transport for the ISD200 ASIC 1505 * 1506 * This protocol and transport are for ATA devices connected to an ISD200 1507 * ASIC. An ATAPI device that is connected as a slave device will be 1508 * detected in the driver initialization function and the protocol will 1509 * be changed to an ATAPI protocol (Transparent SCSI). 1510 * 1511 */ 1512 1513static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us) 1514{ 1515 int sendToTransport, orig_bufflen; 1516 union ata_cdb ataCdb; 1517 1518 /* Make sure driver was initialized */ 1519 1520 if (us->extra == NULL) { 1521 usb_stor_dbg(us, "ERROR Driver not initialized\n"); 1522 srb->result = DID_ERROR << 16; 1523 return; 1524 } 1525 1526 scsi_set_resid(srb, 0); 1527 /* scsi_bufflen might change in protocol translation to ata */ 1528 orig_bufflen = scsi_bufflen(srb); 1529 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb); 1530 1531 /* send the command to the transport layer */ 1532 if (sendToTransport) 1533 isd200_invoke_transport(us, srb, &ataCdb); 1534 1535 isd200_srb_set_bufflen(srb, orig_bufflen); 1536} 1537 1538static struct scsi_host_template isd200_host_template; 1539 1540static int isd200_probe(struct usb_interface *intf, 1541 const struct usb_device_id *id) 1542{ 1543 struct us_data *us; 1544 int result; 1545 1546 result = usb_stor_probe1(&us, intf, id, 1547 (id - isd200_usb_ids) + isd200_unusual_dev_list, 1548 &isd200_host_template); 1549 if (result) 1550 return result; 1551 1552 us->protocol_name = "ISD200 ATA/ATAPI"; 1553 us->proto_handler = isd200_ata_command; 1554 1555 result = usb_stor_probe2(us); 1556 return result; 1557} 1558 1559static struct usb_driver isd200_driver = { 1560 .name = DRV_NAME, 1561 .probe = isd200_probe, 1562 .disconnect = usb_stor_disconnect, 1563 .suspend = usb_stor_suspend, 1564 .resume = usb_stor_resume, 1565 .reset_resume = usb_stor_reset_resume, 1566 .pre_reset = usb_stor_pre_reset, 1567 .post_reset = usb_stor_post_reset, 1568 .id_table = isd200_usb_ids, 1569 .soft_unbind = 1, 1570 .no_dynamic_id = 1, 1571}; 1572 1573module_usb_stor_driver(isd200_driver, isd200_host_template, DRV_NAME); 1574