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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;
1109 u16 *id = info->id;
1110
1111 usb_stor_dbg(us, "Entering isd200_get_inquiry_data\n");
1112
1113 /* set default to Master */
1114 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1115
1116 /* attempt to manually enumerate this device */
1117 retStatus = isd200_manual_enum(us);
1118 if (retStatus == ISD200_GOOD) {
1119 int transferStatus;
1120
1121 /* check for an ATA device */
1122 if (info->DeviceFlags & DF_ATA_DEVICE) {
1123 /* this must be an ATA device */
1124 /* perform an ATA Command Identify */
1125 transferStatus = isd200_action( us, ACTION_IDENTIFY,
1126 id, ATA_ID_WORDS * 2);
1127 if (transferStatus != ISD200_TRANSPORT_GOOD) {
1128 /* Error issuing ATA Command Identify */
1129 usb_stor_dbg(us, " Error issuing ATA Command Identify\n");
1130 retStatus = ISD200_ERROR;
1131 } else {
1132 /* ATA Command Identify successful */
1133 int i;
1134 __be16 *src;
1135 __u16 *dest;
1136
1137 isd200_fix_driveid(id);
1138 isd200_dump_driveid(us, id);
1139
1140 /* Prevent division by 0 in isd200_scsi_to_ata() */
1141 if (id[ATA_ID_HEADS] == 0 || id[ATA_ID_SECTORS] == 0) {
1142 usb_stor_dbg(us, " Invalid ATA Identify data\n");
1143 retStatus = ISD200_ERROR;
1144 goto Done;
1145 }
1146
1147 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1148
1149 /* Standard IDE interface only supports disks */
1150 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1151
1152 /* The length must be at least 36 (5 + 31) */
1153 info->InquiryData.AdditionalLength = 0x1F;
1154
1155 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) {
1156 /* set the removable bit */
1157 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1158 info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1159 }
1160
1161 /* Fill in vendor identification fields */
1162 src = (__be16 *)&id[ATA_ID_PROD];
1163 dest = (__u16*)info->InquiryData.VendorId;
1164 for (i = 0; i < 4; i++)
1165 dest[i] = be16_to_cpu(src[i]);
1166
1167 src = (__be16 *)&id[ATA_ID_PROD + 8/2];
1168 dest = (__u16*)info->InquiryData.ProductId;
1169 for (i=0;i<8;i++)
1170 dest[i] = be16_to_cpu(src[i]);
1171
1172 src = (__be16 *)&id[ATA_ID_FW_REV];
1173 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1174 for (i=0;i<2;i++)
1175 dest[i] = be16_to_cpu(src[i]);
1176
1177 /* determine if it supports Media Status Notification */
1178 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) {
1179 usb_stor_dbg(us, " Device supports Media Status Notification\n");
1180
1181 /*
1182 * Indicate that it is enabled, even
1183 * though it is not.
1184 * This allows the lock/unlock of the
1185 * media to work correctly.
1186 */
1187 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1188 }
1189 else
1190 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1191
1192 }
1193 } else {
1194 /*
1195 * this must be an ATAPI device
1196 * use an ATAPI protocol (Transparent SCSI)
1197 */
1198 us->protocol_name = "Transparent SCSI";
1199 us->proto_handler = usb_stor_transparent_scsi_command;
1200
1201 usb_stor_dbg(us, "Protocol changed to: %s\n",
1202 us->protocol_name);
1203
1204 /* Free driver structure */
1205 us->extra_destructor(info);
1206 kfree(info);
1207 us->extra = NULL;
1208 us->extra_destructor = NULL;
1209 }
1210 }
1211
1212 Done:
1213 usb_stor_dbg(us, "Leaving isd200_get_inquiry_data %08X\n", retStatus);
1214
1215 return(retStatus);
1216}
1217
1218/**************************************************************************
1219 * isd200_scsi_to_ata
1220 *
1221 * Translate SCSI commands to ATA commands.
1222 *
1223 * RETURNS:
1224 * 1 if the command needs to be sent to the transport layer
1225 * 0 otherwise
1226 */
1227static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1228 union ata_cdb * ataCdb)
1229{
1230 struct isd200_info *info = (struct isd200_info *)us->extra;
1231 u16 *id = info->id;
1232 int sendToTransport = 1;
1233 unsigned char sectnum, head;
1234 unsigned short cylinder;
1235 unsigned long lba;
1236 unsigned long blockCount;
1237 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1238
1239 memset(ataCdb, 0, sizeof(union ata_cdb));
1240
1241 /* SCSI Command */
1242 switch (srb->cmnd[0]) {
1243 case INQUIRY:
1244 usb_stor_dbg(us, " ATA OUT - INQUIRY\n");
1245
1246 /* copy InquiryData */
1247 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1248 sizeof(info->InquiryData), srb);
1249 srb->result = SAM_STAT_GOOD;
1250 sendToTransport = 0;
1251 break;
1252
1253 case MODE_SENSE:
1254 usb_stor_dbg(us, " ATA OUT - SCSIOP_MODE_SENSE\n");
1255
1256 /* Initialize the return buffer */
1257 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1258
1259 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1260 {
1261 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1262 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1263 ataCdb->generic.TransferBlockSize = 1;
1264 ataCdb->generic.RegisterSelect = REG_COMMAND;
1265 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1266 isd200_srb_set_bufflen(srb, 0);
1267 } else {
1268 usb_stor_dbg(us, " Media Status not supported, just report okay\n");
1269 srb->result = SAM_STAT_GOOD;
1270 sendToTransport = 0;
1271 }
1272 break;
1273
1274 case TEST_UNIT_READY:
1275 usb_stor_dbg(us, " ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1276
1277 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1278 {
1279 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1280 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1281 ataCdb->generic.TransferBlockSize = 1;
1282 ataCdb->generic.RegisterSelect = REG_COMMAND;
1283 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1284 isd200_srb_set_bufflen(srb, 0);
1285 } else {
1286 usb_stor_dbg(us, " Media Status not supported, just report okay\n");
1287 srb->result = SAM_STAT_GOOD;
1288 sendToTransport = 0;
1289 }
1290 break;
1291
1292 case READ_CAPACITY:
1293 {
1294 unsigned long capacity;
1295 struct read_capacity_data readCapacityData;
1296
1297 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ_CAPACITY\n");
1298
1299 if (ata_id_has_lba(id))
1300 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1;
1301 else
1302 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] *
1303 id[ATA_ID_SECTORS]) - 1;
1304
1305 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1306 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1307
1308 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1309 sizeof(readCapacityData), srb);
1310 srb->result = SAM_STAT_GOOD;
1311 sendToTransport = 0;
1312 }
1313 break;
1314
1315 case READ_10:
1316 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ\n");
1317
1318 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1319 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1320
1321 if (ata_id_has_lba(id)) {
1322 sectnum = (unsigned char)(lba);
1323 cylinder = (unsigned short)(lba>>8);
1324 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1325 } else {
1326 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1327 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1328 id[ATA_ID_HEADS]));
1329 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1330 id[ATA_ID_HEADS]);
1331 }
1332 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1333 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1334 ataCdb->generic.TransferBlockSize = 1;
1335 ataCdb->generic.RegisterSelect =
1336 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1337 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1338 REG_DEVICE_HEAD | REG_COMMAND;
1339 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1340 ataCdb->write.SectorNumberByte = sectnum;
1341 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1342 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1343 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1344 ataCdb->write.CommandByte = ATA_CMD_PIO_READ;
1345 break;
1346
1347 case WRITE_10:
1348 usb_stor_dbg(us, " ATA OUT - SCSIOP_WRITE\n");
1349
1350 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1351 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1352
1353 if (ata_id_has_lba(id)) {
1354 sectnum = (unsigned char)(lba);
1355 cylinder = (unsigned short)(lba>>8);
1356 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1357 } else {
1358 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1359 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1360 id[ATA_ID_HEADS]));
1361 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1362 id[ATA_ID_HEADS]);
1363 }
1364 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1365 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1366 ataCdb->generic.TransferBlockSize = 1;
1367 ataCdb->generic.RegisterSelect =
1368 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1369 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1370 REG_DEVICE_HEAD | REG_COMMAND;
1371 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1372 ataCdb->write.SectorNumberByte = sectnum;
1373 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1374 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1375 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1376 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE;
1377 break;
1378
1379 case ALLOW_MEDIUM_REMOVAL:
1380 usb_stor_dbg(us, " ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1381
1382 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1383 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n",
1384 srb->cmnd[4]);
1385
1386 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1387 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1388 ataCdb->generic.TransferBlockSize = 1;
1389 ataCdb->generic.RegisterSelect = REG_COMMAND;
1390 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1391 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
1392 isd200_srb_set_bufflen(srb, 0);
1393 } else {
1394 usb_stor_dbg(us, " Not removable media, just report okay\n");
1395 srb->result = SAM_STAT_GOOD;
1396 sendToTransport = 0;
1397 }
1398 break;
1399
1400 case START_STOP:
1401 usb_stor_dbg(us, " ATA OUT - SCSIOP_START_STOP_UNIT\n");
1402 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1403
1404 if ((srb->cmnd[4] & 0x3) == 0x2) {
1405 usb_stor_dbg(us, " Media Eject\n");
1406 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1407 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1408 ataCdb->generic.TransferBlockSize = 0;
1409 ataCdb->generic.RegisterSelect = REG_COMMAND;
1410 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1411 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1412 usb_stor_dbg(us, " Get Media Status\n");
1413 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1414 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1415 ataCdb->generic.TransferBlockSize = 1;
1416 ataCdb->generic.RegisterSelect = REG_COMMAND;
1417 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1418 isd200_srb_set_bufflen(srb, 0);
1419 } else {
1420 usb_stor_dbg(us, " Nothing to do, just report okay\n");
1421 srb->result = SAM_STAT_GOOD;
1422 sendToTransport = 0;
1423 }
1424 break;
1425
1426 default:
1427 usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n",
1428 srb->cmnd[0]);
1429 srb->result = DID_ERROR << 16;
1430 sendToTransport = 0;
1431 break;
1432 }
1433
1434 return(sendToTransport);
1435}
1436
1437
1438/**************************************************************************
1439 * isd200_free_info
1440 *
1441 * Frees the driver structure.
1442 */
1443static void isd200_free_info_ptrs(void *info_)
1444{
1445 struct isd200_info *info = (struct isd200_info *) info_;
1446
1447 if (info) {
1448 kfree(info->id);
1449 kfree(info->RegsBuf);
1450 kfree(info->srb.sense_buffer);
1451 }
1452}
1453
1454/**************************************************************************
1455 * isd200_init_info
1456 *
1457 * Allocates (if necessary) and initializes the driver structure.
1458 *
1459 * RETURNS:
1460 * error status code
1461 */
1462static int isd200_init_info(struct us_data *us)
1463{
1464 struct isd200_info *info;
1465
1466 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1467 if (!info)
1468 return -ENOMEM;
1469
1470 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
1471 info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1472 info->srb.sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1473
1474 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1475 isd200_free_info_ptrs(info);
1476 kfree(info);
1477 return -ENOMEM;
1478 }
1479
1480 us->extra = info;
1481 us->extra_destructor = isd200_free_info_ptrs;
1482
1483 return 0;
1484}
1485
1486/**************************************************************************
1487 * Initialization for the ISD200
1488 */
1489
1490static int isd200_Initialization(struct us_data *us)
1491{
1492 int rc = 0;
1493
1494 usb_stor_dbg(us, "ISD200 Initialization...\n");
1495
1496 /* Initialize ISD200 info struct */
1497
1498 if (isd200_init_info(us) < 0) {
1499 usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n");
1500 rc = -ENOMEM;
1501 } else {
1502 /* Get device specific data */
1503
1504 if (isd200_get_inquiry_data(us) != ISD200_GOOD) {
1505 usb_stor_dbg(us, "ISD200 Initialization Failure\n");
1506 rc = -EINVAL;
1507 } else {
1508 usb_stor_dbg(us, "ISD200 Initialization complete\n");
1509 }
1510 }
1511
1512 return rc;
1513}
1514
1515
1516/**************************************************************************
1517 * Protocol and Transport for the ISD200 ASIC
1518 *
1519 * This protocol and transport are for ATA devices connected to an ISD200
1520 * ASIC. An ATAPI device that is connected as a slave device will be
1521 * detected in the driver initialization function and the protocol will
1522 * be changed to an ATAPI protocol (Transparent SCSI).
1523 *
1524 */
1525
1526static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1527{
1528 int sendToTransport, orig_bufflen;
1529 union ata_cdb ataCdb;
1530
1531 /* Make sure driver was initialized */
1532
1533 if (us->extra == NULL) {
1534 usb_stor_dbg(us, "ERROR Driver not initialized\n");
1535 srb->result = DID_ERROR << 16;
1536 return;
1537 }
1538
1539 scsi_set_resid(srb, 0);
1540 /* scsi_bufflen might change in protocol translation to ata */
1541 orig_bufflen = scsi_bufflen(srb);
1542 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1543
1544 /* send the command to the transport layer */
1545 if (sendToTransport)
1546 isd200_invoke_transport(us, srb, &ataCdb);
1547
1548 isd200_srb_set_bufflen(srb, orig_bufflen);
1549}
1550
1551static struct scsi_host_template isd200_host_template;
1552
1553static int isd200_probe(struct usb_interface *intf,
1554 const struct usb_device_id *id)
1555{
1556 struct us_data *us;
1557 int result;
1558
1559 result = usb_stor_probe1(&us, intf, id,
1560 (id - isd200_usb_ids) + isd200_unusual_dev_list,
1561 &isd200_host_template);
1562 if (result)
1563 return result;
1564
1565 us->protocol_name = "ISD200 ATA/ATAPI";
1566 us->proto_handler = isd200_ata_command;
1567
1568 result = usb_stor_probe2(us);
1569 return result;
1570}
1571
1572static struct usb_driver isd200_driver = {
1573 .name = DRV_NAME,
1574 .probe = isd200_probe,
1575 .disconnect = usb_stor_disconnect,
1576 .suspend = usb_stor_suspend,
1577 .resume = usb_stor_resume,
1578 .reset_resume = usb_stor_reset_resume,
1579 .pre_reset = usb_stor_pre_reset,
1580 .post_reset = usb_stor_post_reset,
1581 .id_table = isd200_usb_ids,
1582 .soft_unbind = 1,
1583 .no_dynamic_id = 1,
1584};
1585
1586module_usb_stor_driver(isd200_driver, isd200_host_template, DRV_NAME);
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
63MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
64MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>");
65MODULE_LICENSE("GPL");
66
67static 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
79static struct usb_device_id isd200_usb_ids[] = {
80# include "unusual_isd200.h"
81 { } /* Terminating entry */
82};
83MODULE_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
102static 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
205union 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
274struct 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
314struct 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
330struct 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
351struct 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
362struct 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
379struct 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 */
411static 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 */
461static 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
475static 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 */
489static 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
503 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
504 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
505 ata.generic.TransferBlockSize = 1;
506
507 switch ( action ) {
508 case ACTION_READ_STATUS:
509 US_DEBUGP(" isd200_action(READ_STATUS)\n");
510 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
511 ata.generic.RegisterSelect =
512 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
513 REG_STATUS | REG_ERROR;
514 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
515 break;
516
517 case ACTION_ENUM:
518 US_DEBUGP(" isd200_action(ENUM,0x%02x)\n",value);
519 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
520 ACTION_SELECT_3|ACTION_SELECT_4|
521 ACTION_SELECT_5;
522 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
523 ata.write.DeviceHeadByte = value;
524 isd200_set_srb(info, DMA_NONE, NULL, 0);
525 break;
526
527 case ACTION_RESET:
528 US_DEBUGP(" isd200_action(RESET)\n");
529 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
530 ACTION_SELECT_3|ACTION_SELECT_4;
531 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
532 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
533 isd200_set_srb(info, DMA_NONE, NULL, 0);
534 break;
535
536 case ACTION_REENABLE:
537 US_DEBUGP(" isd200_action(REENABLE)\n");
538 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
539 ACTION_SELECT_3|ACTION_SELECT_4;
540 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
541 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
542 isd200_set_srb(info, DMA_NONE, NULL, 0);
543 break;
544
545 case ACTION_SOFT_RESET:
546 US_DEBUGP(" isd200_action(SOFT_RESET)\n");
547 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
548 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
549 ata.write.DeviceHeadByte = info->DeviceHead;
550 ata.write.CommandByte = ATA_CMD_DEV_RESET;
551 isd200_set_srb(info, DMA_NONE, NULL, 0);
552 break;
553
554 case ACTION_IDENTIFY:
555 US_DEBUGP(" isd200_action(IDENTIFY)\n");
556 ata.generic.RegisterSelect = REG_COMMAND;
557 ata.write.CommandByte = ATA_CMD_ID_ATA;
558 isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
559 ATA_ID_WORDS * 2);
560 break;
561
562 default:
563 US_DEBUGP("Error: Undefined action %d\n",action);
564 return ISD200_ERROR;
565 }
566
567 memcpy(srb->cmnd, &ata, sizeof(ata.generic));
568 srb->cmd_len = sizeof(ata.generic);
569 status = usb_stor_Bulk_transport(srb, us);
570 if (status == USB_STOR_TRANSPORT_GOOD)
571 status = ISD200_GOOD;
572 else {
573 US_DEBUGP(" isd200_action(0x%02x) error: %d\n",action,status);
574 status = ISD200_ERROR;
575 /* need to reset device here */
576 }
577
578 return status;
579}
580
581/**************************************************************************
582 * isd200_read_regs
583 *
584 * Read ATA Registers
585 *
586 * RETURNS:
587 * ISD status code
588 */
589static int isd200_read_regs( struct us_data *us )
590{
591 struct isd200_info *info = (struct isd200_info *)us->extra;
592 int retStatus = ISD200_GOOD;
593 int transferStatus;
594
595 US_DEBUGP("Entering isd200_IssueATAReadRegs\n");
596
597 transferStatus = isd200_action( us, ACTION_READ_STATUS,
598 info->RegsBuf, sizeof(info->ATARegs) );
599 if (transferStatus != ISD200_TRANSPORT_GOOD) {
600 US_DEBUGP(" Error reading ATA registers\n");
601 retStatus = ISD200_ERROR;
602 } else {
603 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
604 US_DEBUGP(" Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n",
605 info->ATARegs[ATA_REG_ERROR_OFFSET]);
606 }
607
608 return retStatus;
609}
610
611
612/**************************************************************************
613 * Invoke the transport and basic error-handling/recovery methods
614 *
615 * This is used by the protocol layers to actually send the message to
616 * the device and receive the response.
617 */
618static void isd200_invoke_transport( struct us_data *us,
619 struct scsi_cmnd *srb,
620 union ata_cdb *ataCdb )
621{
622 int need_auto_sense = 0;
623 int transferStatus;
624 int result;
625
626 /* send the command to the transport layer */
627 memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
628 srb->cmd_len = sizeof(ataCdb->generic);
629 transferStatus = usb_stor_Bulk_transport(srb, us);
630
631 /* if the command gets aborted by the higher layers, we need to
632 * short-circuit all other processing
633 */
634 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
635 US_DEBUGP("-- command was aborted\n");
636 goto Handle_Abort;
637 }
638
639 switch (transferStatus) {
640
641 case USB_STOR_TRANSPORT_GOOD:
642 /* Indicate a good result */
643 srb->result = SAM_STAT_GOOD;
644 break;
645
646 case USB_STOR_TRANSPORT_NO_SENSE:
647 US_DEBUGP("-- transport indicates protocol failure\n");
648 srb->result = SAM_STAT_CHECK_CONDITION;
649 return;
650
651 case USB_STOR_TRANSPORT_FAILED:
652 US_DEBUGP("-- transport indicates command failure\n");
653 need_auto_sense = 1;
654 break;
655
656 case USB_STOR_TRANSPORT_ERROR:
657 US_DEBUGP("-- transport indicates transport error\n");
658 srb->result = DID_ERROR << 16;
659 /* Need reset here */
660 return;
661
662 default:
663 US_DEBUGP("-- transport indicates unknown error\n");
664 srb->result = DID_ERROR << 16;
665 /* Need reset here */
666 return;
667 }
668
669 if ((scsi_get_resid(srb) > 0) &&
670 !((srb->cmnd[0] == REQUEST_SENSE) ||
671 (srb->cmnd[0] == INQUIRY) ||
672 (srb->cmnd[0] == MODE_SENSE) ||
673 (srb->cmnd[0] == LOG_SENSE) ||
674 (srb->cmnd[0] == MODE_SENSE_10))) {
675 US_DEBUGP("-- unexpectedly short transfer\n");
676 need_auto_sense = 1;
677 }
678
679 if (need_auto_sense) {
680 result = isd200_read_regs(us);
681 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
682 US_DEBUGP("-- auto-sense aborted\n");
683 goto Handle_Abort;
684 }
685 if (result == ISD200_GOOD) {
686 isd200_build_sense(us, srb);
687 srb->result = SAM_STAT_CHECK_CONDITION;
688
689 /* If things are really okay, then let's show that */
690 if ((srb->sense_buffer[2] & 0xf) == 0x0)
691 srb->result = SAM_STAT_GOOD;
692 } else {
693 srb->result = DID_ERROR << 16;
694 /* Need reset here */
695 }
696 }
697
698 /* Regardless of auto-sense, if we _know_ we have an error
699 * condition, show that in the result code
700 */
701 if (transferStatus == USB_STOR_TRANSPORT_FAILED)
702 srb->result = SAM_STAT_CHECK_CONDITION;
703 return;
704
705 /* abort processing: the bulk-only transport requires a reset
706 * following an abort */
707 Handle_Abort:
708 srb->result = DID_ABORT << 16;
709
710 /* permit the reset transfer to take place */
711 clear_bit(US_FLIDX_ABORTING, &us->dflags);
712 /* Need reset here */
713}
714
715#ifdef CONFIG_USB_STORAGE_DEBUG
716static void isd200_log_config( struct isd200_info* info )
717{
718 US_DEBUGP(" Event Notification: 0x%x\n",
719 info->ConfigData.EventNotification);
720 US_DEBUGP(" External Clock: 0x%x\n",
721 info->ConfigData.ExternalClock);
722 US_DEBUGP(" ATA Init Timeout: 0x%x\n",
723 info->ConfigData.ATAInitTimeout);
724 US_DEBUGP(" ATAPI Command Block Size: 0x%x\n",
725 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
726 US_DEBUGP(" Master/Slave Selection: 0x%x\n",
727 info->ConfigData.ATAConfig & ATACFG_MASTER);
728 US_DEBUGP(" ATAPI Reset: 0x%x\n",
729 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
730 US_DEBUGP(" ATA Timing: 0x%x\n",
731 info->ConfigData.ATAConfig & ATACFG_TIMING);
732 US_DEBUGP(" ATA Major Command: 0x%x\n",
733 info->ConfigData.ATAMajorCommand);
734 US_DEBUGP(" ATA Minor Command: 0x%x\n",
735 info->ConfigData.ATAMinorCommand);
736 US_DEBUGP(" Init Status: 0x%x\n",
737 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
738 US_DEBUGP(" Config Descriptor 2: 0x%x\n",
739 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
740 US_DEBUGP(" Skip Device Boot: 0x%x\n",
741 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
742 US_DEBUGP(" ATA 3 State Supsend: 0x%x\n",
743 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
744 US_DEBUGP(" Descriptor Override: 0x%x\n",
745 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
746 US_DEBUGP(" Last LUN Identifier: 0x%x\n",
747 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
748 US_DEBUGP(" SRST Enable: 0x%x\n",
749 info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
750}
751#endif
752
753/**************************************************************************
754 * isd200_write_config
755 *
756 * Write the ISD200 Configuration data
757 *
758 * RETURNS:
759 * ISD status code
760 */
761static int isd200_write_config( struct us_data *us )
762{
763 struct isd200_info *info = (struct isd200_info *)us->extra;
764 int retStatus = ISD200_GOOD;
765 int result;
766
767#ifdef CONFIG_USB_STORAGE_DEBUG
768 US_DEBUGP("Entering isd200_write_config\n");
769 US_DEBUGP(" Writing the following ISD200 Config Data:\n");
770 isd200_log_config(info);
771#endif
772
773 /* let's send the command via the control pipe */
774 result = usb_stor_ctrl_transfer(
775 us,
776 us->send_ctrl_pipe,
777 0x01,
778 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
779 0x0000,
780 0x0002,
781 (void *) &info->ConfigData,
782 sizeof(info->ConfigData));
783
784 if (result >= 0) {
785 US_DEBUGP(" ISD200 Config Data was written successfully\n");
786 } else {
787 US_DEBUGP(" Request to write ISD200 Config Data failed!\n");
788 retStatus = ISD200_ERROR;
789 }
790
791 US_DEBUGP("Leaving isd200_write_config %08X\n", retStatus);
792 return retStatus;
793}
794
795
796/**************************************************************************
797 * isd200_read_config
798 *
799 * Reads the ISD200 Configuration data
800 *
801 * RETURNS:
802 * ISD status code
803 */
804static int isd200_read_config( struct us_data *us )
805{
806 struct isd200_info *info = (struct isd200_info *)us->extra;
807 int retStatus = ISD200_GOOD;
808 int result;
809
810 US_DEBUGP("Entering isd200_read_config\n");
811
812 /* read the configuration information from ISD200. Use this to */
813 /* determine what the special ATA CDB bytes are. */
814
815 result = usb_stor_ctrl_transfer(
816 us,
817 us->recv_ctrl_pipe,
818 0x02,
819 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
820 0x0000,
821 0x0002,
822 (void *) &info->ConfigData,
823 sizeof(info->ConfigData));
824
825
826 if (result >= 0) {
827 US_DEBUGP(" Retrieved the following ISD200 Config Data:\n");
828#ifdef CONFIG_USB_STORAGE_DEBUG
829 isd200_log_config(info);
830#endif
831 } else {
832 US_DEBUGP(" Request to get ISD200 Config Data failed!\n");
833 retStatus = ISD200_ERROR;
834 }
835
836 US_DEBUGP("Leaving isd200_read_config %08X\n", retStatus);
837 return retStatus;
838}
839
840
841/**************************************************************************
842 * isd200_atapi_soft_reset
843 *
844 * Perform an Atapi Soft Reset on the device
845 *
846 * RETURNS:
847 * NT status code
848 */
849static int isd200_atapi_soft_reset( struct us_data *us )
850{
851 int retStatus = ISD200_GOOD;
852 int transferStatus;
853
854 US_DEBUGP("Entering isd200_atapi_soft_reset\n");
855
856 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
857 if (transferStatus != ISD200_TRANSPORT_GOOD) {
858 US_DEBUGP(" Error issuing Atapi Soft Reset\n");
859 retStatus = ISD200_ERROR;
860 }
861
862 US_DEBUGP("Leaving isd200_atapi_soft_reset %08X\n", retStatus);
863 return retStatus;
864}
865
866
867/**************************************************************************
868 * isd200_srst
869 *
870 * Perform an SRST on the device
871 *
872 * RETURNS:
873 * ISD status code
874 */
875static int isd200_srst( struct us_data *us )
876{
877 int retStatus = ISD200_GOOD;
878 int transferStatus;
879
880 US_DEBUGP("Entering isd200_SRST\n");
881
882 transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
883
884 /* check to see if this request failed */
885 if (transferStatus != ISD200_TRANSPORT_GOOD) {
886 US_DEBUGP(" Error issuing SRST\n");
887 retStatus = ISD200_ERROR;
888 } else {
889 /* delay 10ms to give the drive a chance to see it */
890 msleep(10);
891
892 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
893 if (transferStatus != ISD200_TRANSPORT_GOOD) {
894 US_DEBUGP(" Error taking drive out of reset\n");
895 retStatus = ISD200_ERROR;
896 } else {
897 /* delay 50ms to give the drive a chance to recover after SRST */
898 msleep(50);
899 }
900 }
901
902 US_DEBUGP("Leaving isd200_srst %08X\n", retStatus);
903 return retStatus;
904}
905
906
907/**************************************************************************
908 * isd200_try_enum
909 *
910 * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
911 * and tries to analyze the status registers
912 *
913 * RETURNS:
914 * ISD status code
915 */
916static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
917 int detect )
918{
919 int status = ISD200_GOOD;
920 unsigned long endTime;
921 struct isd200_info *info = (struct isd200_info *)us->extra;
922 unsigned char *regs = info->RegsBuf;
923 int recheckAsMaster = 0;
924
925 if ( detect )
926 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
927 else
928 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
929
930 /* loop until we detect !BSY or timeout */
931 while(1) {
932#ifdef CONFIG_USB_STORAGE_DEBUG
933 char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ?
934 "Master" : "Slave";
935#endif
936
937 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
938 if ( status != ISD200_GOOD )
939 break;
940
941 status = isd200_action( us, ACTION_READ_STATUS,
942 regs, 8 );
943 if ( status != ISD200_GOOD )
944 break;
945
946 if (!detect) {
947 if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) {
948 US_DEBUGP(" %s status is still BSY, try again...\n",mstr);
949 } else {
950 US_DEBUGP(" %s status !BSY, continue with next operation\n",mstr);
951 break;
952 }
953 }
954 /* check for ATA_BUSY and */
955 /* ATA_DF (workaround ATA Zip drive) and */
956 /* ATA_ERR (workaround for Archos CD-ROM) */
957 else if (regs[ATA_REG_STATUS_OFFSET] &
958 (ATA_BUSY | ATA_DF | ATA_ERR)) {
959 US_DEBUGP(" Status indicates it is not ready, try again...\n");
960 }
961 /* check for DRDY, ATA devices set DRDY after SRST */
962 else if (regs[ATA_REG_STATUS_OFFSET] & ATA_DRDY) {
963 US_DEBUGP(" Identified ATA device\n");
964 info->DeviceFlags |= DF_ATA_DEVICE;
965 info->DeviceHead = master_slave;
966 break;
967 }
968 /* check Cylinder High/Low to
969 determine if it is an ATAPI device
970 */
971 else if (regs[ATA_REG_HCYL_OFFSET] == 0xEB &&
972 regs[ATA_REG_LCYL_OFFSET] == 0x14) {
973 /* It seems that the RICOH
974 MP6200A CD/RW drive will
975 report itself okay as a
976 slave when it is really a
977 master. So this check again
978 as a master device just to
979 make sure it doesn't report
980 itself okay as a master also
981 */
982 if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
983 !recheckAsMaster) {
984 US_DEBUGP(" Identified ATAPI device as slave. Rechecking again as master\n");
985 recheckAsMaster = 1;
986 master_slave = ATA_ADDRESS_DEVHEAD_STD;
987 } else {
988 US_DEBUGP(" Identified ATAPI device\n");
989 info->DeviceHead = master_slave;
990
991 status = isd200_atapi_soft_reset(us);
992 break;
993 }
994 } else {
995 US_DEBUGP(" Not ATA, not ATAPI. Weird.\n");
996 break;
997 }
998
999 /* check for timeout on this request */
1000 if (time_after_eq(jiffies, endTime)) {
1001 if (!detect)
1002 US_DEBUGP(" BSY check timeout, just continue with next operation...\n");
1003 else
1004 US_DEBUGP(" Device detect timeout!\n");
1005 break;
1006 }
1007 }
1008
1009 return status;
1010}
1011
1012/**************************************************************************
1013 * isd200_manual_enum
1014 *
1015 * Determines if the drive attached is an ATA or ATAPI and if it is a
1016 * master or slave.
1017 *
1018 * RETURNS:
1019 * ISD status code
1020 */
1021static int isd200_manual_enum(struct us_data *us)
1022{
1023 struct isd200_info *info = (struct isd200_info *)us->extra;
1024 int retStatus = ISD200_GOOD;
1025
1026 US_DEBUGP("Entering isd200_manual_enum\n");
1027
1028 retStatus = isd200_read_config(us);
1029 if (retStatus == ISD200_GOOD) {
1030 int isslave;
1031 /* master or slave? */
1032 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
1033 if (retStatus == ISD200_GOOD)
1034 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
1035
1036 if (retStatus == ISD200_GOOD) {
1037 retStatus = isd200_srst(us);
1038 if (retStatus == ISD200_GOOD)
1039 /* ata or atapi? */
1040 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
1041 }
1042
1043 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
1044 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
1045 US_DEBUGP(" Setting Master/Slave selection to %d\n", isslave);
1046 info->ConfigData.ATAConfig &= 0x3f;
1047 info->ConfigData.ATAConfig |= (isslave<<6);
1048 retStatus = isd200_write_config(us);
1049 }
1050 }
1051
1052 US_DEBUGP("Leaving isd200_manual_enum %08X\n", retStatus);
1053 return(retStatus);
1054}
1055
1056static void isd200_fix_driveid(u16 *id)
1057{
1058#ifndef __LITTLE_ENDIAN
1059# ifdef __BIG_ENDIAN
1060 int i;
1061
1062 for (i = 0; i < ATA_ID_WORDS; i++)
1063 id[i] = __le16_to_cpu(id[i]);
1064# else
1065# error "Please fix <asm/byteorder.h>"
1066# endif
1067#endif
1068}
1069
1070static void isd200_dump_driveid(u16 *id)
1071{
1072 US_DEBUGP(" Identify Data Structure:\n");
1073 US_DEBUGP(" config = 0x%x\n", id[ATA_ID_CONFIG]);
1074 US_DEBUGP(" cyls = 0x%x\n", id[ATA_ID_CYLS]);
1075 US_DEBUGP(" heads = 0x%x\n", id[ATA_ID_HEADS]);
1076 US_DEBUGP(" track_bytes = 0x%x\n", id[4]);
1077 US_DEBUGP(" sector_bytes = 0x%x\n", id[5]);
1078 US_DEBUGP(" sectors = 0x%x\n", id[ATA_ID_SECTORS]);
1079 US_DEBUGP(" serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]);
1080 US_DEBUGP(" buf_type = 0x%x\n", id[20]);
1081 US_DEBUGP(" buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]);
1082 US_DEBUGP(" ecc_bytes = 0x%x\n", id[22]);
1083 US_DEBUGP(" fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]);
1084 US_DEBUGP(" model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]);
1085 US_DEBUGP(" max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff);
1086 US_DEBUGP(" dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]);
1087 US_DEBUGP(" capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8);
1088 US_DEBUGP(" tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8);
1089 US_DEBUGP(" tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8);
1090 US_DEBUGP(" field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]);
1091 US_DEBUGP(" cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]);
1092 US_DEBUGP(" cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]);
1093 US_DEBUGP(" cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]);
1094 US_DEBUGP(" cur_capacity = 0x%x\n", ata_id_u32(id, 57));
1095 US_DEBUGP(" multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff);
1096 US_DEBUGP(" lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY));
1097 US_DEBUGP(" command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]);
1098 US_DEBUGP(" command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]);
1099}
1100
1101/**************************************************************************
1102 * isd200_get_inquiry_data
1103 *
1104 * Get inquiry data
1105 *
1106 * RETURNS:
1107 * ISD status code
1108 */
1109static int isd200_get_inquiry_data( struct us_data *us )
1110{
1111 struct isd200_info *info = (struct isd200_info *)us->extra;
1112 int retStatus = ISD200_GOOD;
1113 u16 *id = info->id;
1114
1115 US_DEBUGP("Entering isd200_get_inquiry_data\n");
1116
1117 /* set default to Master */
1118 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1119
1120 /* attempt to manually enumerate this device */
1121 retStatus = isd200_manual_enum(us);
1122 if (retStatus == ISD200_GOOD) {
1123 int transferStatus;
1124
1125 /* check for an ATA device */
1126 if (info->DeviceFlags & DF_ATA_DEVICE) {
1127 /* this must be an ATA device */
1128 /* perform an ATA Command Identify */
1129 transferStatus = isd200_action( us, ACTION_IDENTIFY,
1130 id, ATA_ID_WORDS * 2);
1131 if (transferStatus != ISD200_TRANSPORT_GOOD) {
1132 /* Error issuing ATA Command Identify */
1133 US_DEBUGP(" Error issuing ATA Command Identify\n");
1134 retStatus = ISD200_ERROR;
1135 } else {
1136 /* ATA Command Identify successful */
1137 int i;
1138 __be16 *src;
1139 __u16 *dest;
1140
1141 isd200_fix_driveid(id);
1142 isd200_dump_driveid(id);
1143
1144 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1145
1146 /* Standard IDE interface only supports disks */
1147 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1148
1149 /* The length must be at least 36 (5 + 31) */
1150 info->InquiryData.AdditionalLength = 0x1F;
1151
1152 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) {
1153 /* set the removable bit */
1154 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1155 info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1156 }
1157
1158 /* Fill in vendor identification fields */
1159 src = (__be16 *)&id[ATA_ID_PROD];
1160 dest = (__u16*)info->InquiryData.VendorId;
1161 for (i=0;i<4;i++)
1162 dest[i] = be16_to_cpu(src[i]);
1163
1164 src = (__be16 *)&id[ATA_ID_PROD + 8/2];
1165 dest = (__u16*)info->InquiryData.ProductId;
1166 for (i=0;i<8;i++)
1167 dest[i] = be16_to_cpu(src[i]);
1168
1169 src = (__be16 *)&id[ATA_ID_FW_REV];
1170 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1171 for (i=0;i<2;i++)
1172 dest[i] = be16_to_cpu(src[i]);
1173
1174 /* determine if it supports Media Status Notification */
1175 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) {
1176 US_DEBUGP(" Device supports Media Status Notification\n");
1177
1178 /* Indicate that it is enabled, even though it is not
1179 * This allows the lock/unlock of the media to work
1180 * correctly.
1181 */
1182 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1183 }
1184 else
1185 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1186
1187 }
1188 } else {
1189 /*
1190 * this must be an ATAPI device
1191 * use an ATAPI protocol (Transparent SCSI)
1192 */
1193 us->protocol_name = "Transparent SCSI";
1194 us->proto_handler = usb_stor_transparent_scsi_command;
1195
1196 US_DEBUGP("Protocol changed to: %s\n", us->protocol_name);
1197
1198 /* Free driver structure */
1199 us->extra_destructor(info);
1200 kfree(info);
1201 us->extra = NULL;
1202 us->extra_destructor = NULL;
1203 }
1204 }
1205
1206 US_DEBUGP("Leaving isd200_get_inquiry_data %08X\n", retStatus);
1207
1208 return(retStatus);
1209}
1210
1211/**************************************************************************
1212 * isd200_scsi_to_ata
1213 *
1214 * Translate SCSI commands to ATA commands.
1215 *
1216 * RETURNS:
1217 * 1 if the command needs to be sent to the transport layer
1218 * 0 otherwise
1219 */
1220static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1221 union ata_cdb * ataCdb)
1222{
1223 struct isd200_info *info = (struct isd200_info *)us->extra;
1224 u16 *id = info->id;
1225 int sendToTransport = 1;
1226 unsigned char sectnum, head;
1227 unsigned short cylinder;
1228 unsigned long lba;
1229 unsigned long blockCount;
1230 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1231
1232 memset(ataCdb, 0, sizeof(union ata_cdb));
1233
1234 /* SCSI Command */
1235 switch (srb->cmnd[0]) {
1236 case INQUIRY:
1237 US_DEBUGP(" ATA OUT - INQUIRY\n");
1238
1239 /* copy InquiryData */
1240 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1241 sizeof(info->InquiryData), srb);
1242 srb->result = SAM_STAT_GOOD;
1243 sendToTransport = 0;
1244 break;
1245
1246 case MODE_SENSE:
1247 US_DEBUGP(" ATA OUT - SCSIOP_MODE_SENSE\n");
1248
1249 /* Initialize the return buffer */
1250 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1251
1252 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1253 {
1254 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1255 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1256 ataCdb->generic.TransferBlockSize = 1;
1257 ataCdb->generic.RegisterSelect = REG_COMMAND;
1258 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1259 isd200_srb_set_bufflen(srb, 0);
1260 } else {
1261 US_DEBUGP(" Media Status not supported, just report okay\n");
1262 srb->result = SAM_STAT_GOOD;
1263 sendToTransport = 0;
1264 }
1265 break;
1266
1267 case TEST_UNIT_READY:
1268 US_DEBUGP(" ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1269
1270 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1271 {
1272 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1273 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1274 ataCdb->generic.TransferBlockSize = 1;
1275 ataCdb->generic.RegisterSelect = REG_COMMAND;
1276 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1277 isd200_srb_set_bufflen(srb, 0);
1278 } else {
1279 US_DEBUGP(" Media Status not supported, just report okay\n");
1280 srb->result = SAM_STAT_GOOD;
1281 sendToTransport = 0;
1282 }
1283 break;
1284
1285 case READ_CAPACITY:
1286 {
1287 unsigned long capacity;
1288 struct read_capacity_data readCapacityData;
1289
1290 US_DEBUGP(" ATA OUT - SCSIOP_READ_CAPACITY\n");
1291
1292 if (ata_id_has_lba(id))
1293 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1;
1294 else
1295 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] *
1296 id[ATA_ID_SECTORS]) - 1;
1297
1298 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1299 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1300
1301 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1302 sizeof(readCapacityData), srb);
1303 srb->result = SAM_STAT_GOOD;
1304 sendToTransport = 0;
1305 }
1306 break;
1307
1308 case READ_10:
1309 US_DEBUGP(" ATA OUT - SCSIOP_READ\n");
1310
1311 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1312 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1313
1314 if (ata_id_has_lba(id)) {
1315 sectnum = (unsigned char)(lba);
1316 cylinder = (unsigned short)(lba>>8);
1317 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1318 } else {
1319 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1320 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1321 id[ATA_ID_HEADS]));
1322 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1323 id[ATA_ID_HEADS]);
1324 }
1325 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1326 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1327 ataCdb->generic.TransferBlockSize = 1;
1328 ataCdb->generic.RegisterSelect =
1329 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1330 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1331 REG_DEVICE_HEAD | REG_COMMAND;
1332 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1333 ataCdb->write.SectorNumberByte = sectnum;
1334 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1335 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1336 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1337 ataCdb->write.CommandByte = ATA_CMD_PIO_READ;
1338 break;
1339
1340 case WRITE_10:
1341 US_DEBUGP(" ATA OUT - SCSIOP_WRITE\n");
1342
1343 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1344 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1345
1346 if (ata_id_has_lba(id)) {
1347 sectnum = (unsigned char)(lba);
1348 cylinder = (unsigned short)(lba>>8);
1349 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1350 } else {
1351 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1352 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1353 id[ATA_ID_HEADS]));
1354 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1355 id[ATA_ID_HEADS]);
1356 }
1357 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1358 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1359 ataCdb->generic.TransferBlockSize = 1;
1360 ataCdb->generic.RegisterSelect =
1361 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1362 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1363 REG_DEVICE_HEAD | REG_COMMAND;
1364 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1365 ataCdb->write.SectorNumberByte = sectnum;
1366 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1367 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1368 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1369 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE;
1370 break;
1371
1372 case ALLOW_MEDIUM_REMOVAL:
1373 US_DEBUGP(" ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1374
1375 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1376 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", 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 US_DEBUGP(" Not removeable media, just report okay\n");
1387 srb->result = SAM_STAT_GOOD;
1388 sendToTransport = 0;
1389 }
1390 break;
1391
1392 case START_STOP:
1393 US_DEBUGP(" ATA OUT - SCSIOP_START_STOP_UNIT\n");
1394 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1395
1396 if ((srb->cmnd[4] & 0x3) == 0x2) {
1397 US_DEBUGP(" 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 US_DEBUGP(" 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 US_DEBUGP(" Nothing to do, just report okay\n");
1413 srb->result = SAM_STAT_GOOD;
1414 sendToTransport = 0;
1415 }
1416 break;
1417
1418 default:
1419 US_DEBUGP("Unsupported SCSI command - 0x%X\n", srb->cmnd[0]);
1420 srb->result = DID_ERROR << 16;
1421 sendToTransport = 0;
1422 break;
1423 }
1424
1425 return(sendToTransport);
1426}
1427
1428
1429/**************************************************************************
1430 * isd200_free_info
1431 *
1432 * Frees the driver structure.
1433 */
1434static void isd200_free_info_ptrs(void *info_)
1435{
1436 struct isd200_info *info = (struct isd200_info *) info_;
1437
1438 if (info) {
1439 kfree(info->id);
1440 kfree(info->RegsBuf);
1441 kfree(info->srb.sense_buffer);
1442 }
1443}
1444
1445/**************************************************************************
1446 * isd200_init_info
1447 *
1448 * Allocates (if necessary) and initializes the driver structure.
1449 *
1450 * RETURNS:
1451 * ISD status code
1452 */
1453static int isd200_init_info(struct us_data *us)
1454{
1455 int retStatus = ISD200_GOOD;
1456 struct isd200_info *info;
1457
1458 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1459 if (!info)
1460 retStatus = ISD200_ERROR;
1461 else {
1462 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
1463 info->RegsBuf = (unsigned char *)
1464 kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1465 info->srb.sense_buffer =
1466 kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1467 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1468 isd200_free_info_ptrs(info);
1469 kfree(info);
1470 retStatus = ISD200_ERROR;
1471 }
1472 }
1473
1474 if (retStatus == ISD200_GOOD) {
1475 us->extra = info;
1476 us->extra_destructor = isd200_free_info_ptrs;
1477 } else
1478 US_DEBUGP("ERROR - kmalloc failure\n");
1479
1480 return retStatus;
1481}
1482
1483/**************************************************************************
1484 * Initialization for the ISD200
1485 */
1486
1487static int isd200_Initialization(struct us_data *us)
1488{
1489 US_DEBUGP("ISD200 Initialization...\n");
1490
1491 /* Initialize ISD200 info struct */
1492
1493 if (isd200_init_info(us) == ISD200_ERROR) {
1494 US_DEBUGP("ERROR Initializing ISD200 Info struct\n");
1495 } else {
1496 /* Get device specific data */
1497
1498 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1499 US_DEBUGP("ISD200 Initialization Failure\n");
1500 else
1501 US_DEBUGP("ISD200 Initialization complete\n");
1502 }
1503
1504 return 0;
1505}
1506
1507
1508/**************************************************************************
1509 * Protocol and Transport for the ISD200 ASIC
1510 *
1511 * This protocol and transport are for ATA devices connected to an ISD200
1512 * ASIC. An ATAPI device that is connected as a slave device will be
1513 * detected in the driver initialization function and the protocol will
1514 * be changed to an ATAPI protocol (Transparent SCSI).
1515 *
1516 */
1517
1518static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1519{
1520 int sendToTransport = 1, orig_bufflen;
1521 union ata_cdb ataCdb;
1522
1523 /* Make sure driver was initialized */
1524
1525 if (us->extra == NULL)
1526 US_DEBUGP("ERROR Driver not initialized\n");
1527
1528 scsi_set_resid(srb, 0);
1529 /* scsi_bufflen might change in protocol translation to ata */
1530 orig_bufflen = scsi_bufflen(srb);
1531 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1532
1533 /* send the command to the transport layer */
1534 if (sendToTransport)
1535 isd200_invoke_transport(us, srb, &ataCdb);
1536
1537 isd200_srb_set_bufflen(srb, orig_bufflen);
1538}
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 if (result)
1549 return result;
1550
1551 us->protocol_name = "ISD200 ATA/ATAPI";
1552 us->proto_handler = isd200_ata_command;
1553
1554 result = usb_stor_probe2(us);
1555 return result;
1556}
1557
1558static struct usb_driver isd200_driver = {
1559 .name = "ums-isd200",
1560 .probe = isd200_probe,
1561 .disconnect = usb_stor_disconnect,
1562 .suspend = usb_stor_suspend,
1563 .resume = usb_stor_resume,
1564 .reset_resume = usb_stor_reset_resume,
1565 .pre_reset = usb_stor_pre_reset,
1566 .post_reset = usb_stor_post_reset,
1567 .id_table = isd200_usb_ids,
1568 .soft_unbind = 1,
1569 .no_dynamic_id = 1,
1570};
1571
1572module_usb_driver(isd200_driver);