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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
79struct 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};
1570
1571static int __init isd200_init(void)
1572{
1573 return usb_register(&isd200_driver);
1574}
1575
1576static void __exit isd200_exit(void)
1577{
1578 usb_deregister(&isd200_driver);
1579}
1580
1581module_init(isd200_init);
1582module_exit(isd200_exit);
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) }
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
87/*
88 * The flags table
89 */
90#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
91 vendor_name, product_name, use_protocol, use_transport, \
92 init_function, Flags) \
93{ \
94 .vendorName = vendor_name, \
95 .productName = product_name, \
96 .useProtocol = use_protocol, \
97 .useTransport = use_transport, \
98 .initFunction = init_function, \
99}
100
101static struct us_unusual_dev isd200_unusual_dev_list[] = {
102# include "unusual_isd200.h"
103 { } /* Terminating entry */
104};
105
106#undef UNUSUAL_DEV
107
108/* Timeout defines (in Seconds) */
109
110#define ISD200_ENUM_BSY_TIMEOUT 35
111#define ISD200_ENUM_DETECT_TIMEOUT 30
112#define ISD200_DEFAULT_TIMEOUT 30
113
114/* device flags */
115#define DF_ATA_DEVICE 0x0001
116#define DF_MEDIA_STATUS_ENABLED 0x0002
117#define DF_REMOVABLE_MEDIA 0x0004
118
119/* capability bit definitions */
120#define CAPABILITY_DMA 0x01
121#define CAPABILITY_LBA 0x02
122
123/* command_setX bit definitions */
124#define COMMANDSET_REMOVABLE 0x02
125#define COMMANDSET_MEDIA_STATUS 0x10
126
127/* ATA Vendor Specific defines */
128#define ATA_ADDRESS_DEVHEAD_STD 0xa0
129#define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
130#define ATA_ADDRESS_DEVHEAD_SLAVE 0x10
131
132/* Action Select bits */
133#define ACTION_SELECT_0 0x01
134#define ACTION_SELECT_1 0x02
135#define ACTION_SELECT_2 0x04
136#define ACTION_SELECT_3 0x08
137#define ACTION_SELECT_4 0x10
138#define ACTION_SELECT_5 0x20
139#define ACTION_SELECT_6 0x40
140#define ACTION_SELECT_7 0x80
141
142/* Register Select bits */
143#define REG_ALTERNATE_STATUS 0x01
144#define REG_DEVICE_CONTROL 0x01
145#define REG_ERROR 0x02
146#define REG_FEATURES 0x02
147#define REG_SECTOR_COUNT 0x04
148#define REG_SECTOR_NUMBER 0x08
149#define REG_CYLINDER_LOW 0x10
150#define REG_CYLINDER_HIGH 0x20
151#define REG_DEVICE_HEAD 0x40
152#define REG_STATUS 0x80
153#define REG_COMMAND 0x80
154
155/* ATA registers offset definitions */
156#define ATA_REG_ERROR_OFFSET 1
157#define ATA_REG_LCYL_OFFSET 4
158#define ATA_REG_HCYL_OFFSET 5
159#define ATA_REG_STATUS_OFFSET 7
160
161/* ATA error definitions not in <linux/hdreg.h> */
162#define ATA_ERROR_MEDIA_CHANGE 0x20
163
164/* ATA command definitions not in <linux/hdreg.h> */
165#define ATA_COMMAND_GET_MEDIA_STATUS 0xDA
166#define ATA_COMMAND_MEDIA_EJECT 0xED
167
168/* ATA drive control definitions */
169#define ATA_DC_DISABLE_INTERRUPTS 0x02
170#define ATA_DC_RESET_CONTROLLER 0x04
171#define ATA_DC_REENABLE_CONTROLLER 0x00
172
173/*
174 * General purpose return codes
175 */
176
177#define ISD200_ERROR -1
178#define ISD200_GOOD 0
179
180/*
181 * Transport return codes
182 */
183
184#define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */
185#define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */
186#define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
187
188/* driver action codes */
189#define ACTION_READ_STATUS 0
190#define ACTION_RESET 1
191#define ACTION_REENABLE 2
192#define ACTION_SOFT_RESET 3
193#define ACTION_ENUM 4
194#define ACTION_IDENTIFY 5
195
196
197/*
198 * ata_cdb struct
199 */
200
201
202union ata_cdb {
203 struct {
204 unsigned char SignatureByte0;
205 unsigned char SignatureByte1;
206 unsigned char ActionSelect;
207 unsigned char RegisterSelect;
208 unsigned char TransferBlockSize;
209 unsigned char WriteData3F6;
210 unsigned char WriteData1F1;
211 unsigned char WriteData1F2;
212 unsigned char WriteData1F3;
213 unsigned char WriteData1F4;
214 unsigned char WriteData1F5;
215 unsigned char WriteData1F6;
216 unsigned char WriteData1F7;
217 unsigned char Reserved[3];
218 } generic;
219
220 struct {
221 unsigned char SignatureByte0;
222 unsigned char SignatureByte1;
223 unsigned char ActionSelect;
224 unsigned char RegisterSelect;
225 unsigned char TransferBlockSize;
226 unsigned char AlternateStatusByte;
227 unsigned char ErrorByte;
228 unsigned char SectorCountByte;
229 unsigned char SectorNumberByte;
230 unsigned char CylinderLowByte;
231 unsigned char CylinderHighByte;
232 unsigned char DeviceHeadByte;
233 unsigned char StatusByte;
234 unsigned char Reserved[3];
235 } read;
236
237 struct {
238 unsigned char SignatureByte0;
239 unsigned char SignatureByte1;
240 unsigned char ActionSelect;
241 unsigned char RegisterSelect;
242 unsigned char TransferBlockSize;
243 unsigned char DeviceControlByte;
244 unsigned char FeaturesByte;
245 unsigned char SectorCountByte;
246 unsigned char SectorNumberByte;
247 unsigned char CylinderLowByte;
248 unsigned char CylinderHighByte;
249 unsigned char DeviceHeadByte;
250 unsigned char CommandByte;
251 unsigned char Reserved[3];
252 } write;
253};
254
255
256/*
257 * Inquiry data structure. This is the data returned from the target
258 * after it receives an inquiry.
259 *
260 * This structure may be extended by the number of bytes specified
261 * in the field AdditionalLength. The defined size constant only
262 * includes fields through ProductRevisionLevel.
263 */
264
265/*
266 * DeviceType field
267 */
268#define DIRECT_ACCESS_DEVICE 0x00 /* disks */
269#define DEVICE_REMOVABLE 0x80
270
271struct inquiry_data {
272 unsigned char DeviceType;
273 unsigned char DeviceTypeModifier;
274 unsigned char Versions;
275 unsigned char Format;
276 unsigned char AdditionalLength;
277 unsigned char Reserved[2];
278 unsigned char Capability;
279 unsigned char VendorId[8];
280 unsigned char ProductId[16];
281 unsigned char ProductRevisionLevel[4];
282 unsigned char VendorSpecific[20];
283 unsigned char Reserved3[40];
284} __attribute__ ((packed));
285
286/*
287 * INQUIRY data buffer size
288 */
289
290#define INQUIRYDATABUFFERSIZE 36
291
292
293/*
294 * ISD200 CONFIG data struct
295 */
296
297#define ATACFG_TIMING 0x0f
298#define ATACFG_ATAPI_RESET 0x10
299#define ATACFG_MASTER 0x20
300#define ATACFG_BLOCKSIZE 0xa0
301
302#define ATACFGE_LAST_LUN 0x07
303#define ATACFGE_DESC_OVERRIDE 0x08
304#define ATACFGE_STATE_SUSPEND 0x10
305#define ATACFGE_SKIP_BOOT 0x20
306#define ATACFGE_CONF_DESC2 0x40
307#define ATACFGE_INIT_STATUS 0x80
308
309#define CFG_CAPABILITY_SRST 0x01
310
311struct isd200_config {
312 unsigned char EventNotification;
313 unsigned char ExternalClock;
314 unsigned char ATAInitTimeout;
315 unsigned char ATAConfig;
316 unsigned char ATAMajorCommand;
317 unsigned char ATAMinorCommand;
318 unsigned char ATAExtraConfig;
319 unsigned char Capability;
320}__attribute__ ((packed));
321
322
323/*
324 * ISD200 driver information struct
325 */
326
327struct isd200_info {
328 struct inquiry_data InquiryData;
329 u16 *id;
330 struct isd200_config ConfigData;
331 unsigned char *RegsBuf;
332 unsigned char ATARegs[8];
333 unsigned char DeviceHead;
334 unsigned char DeviceFlags;
335
336 /* maximum number of LUNs supported */
337 unsigned char MaxLUNs;
338 unsigned char cmnd[BLK_MAX_CDB];
339 struct scsi_cmnd srb;
340 struct scatterlist sg;
341};
342
343
344/*
345 * Read Capacity Data - returned in Big Endian format
346 */
347
348struct read_capacity_data {
349 __be32 LogicalBlockAddress;
350 __be32 BytesPerBlock;
351};
352
353/*
354 * Read Block Limits Data - returned in Big Endian format
355 * This structure returns the maximum and minimum block
356 * size for a TAPE device.
357 */
358
359struct read_block_limits {
360 unsigned char Reserved;
361 unsigned char BlockMaximumSize[3];
362 unsigned char BlockMinimumSize[2];
363};
364
365
366/*
367 * Sense Data Format
368 */
369
370#define SENSE_ERRCODE 0x7f
371#define SENSE_ERRCODE_VALID 0x80
372#define SENSE_FLAG_SENSE_KEY 0x0f
373#define SENSE_FLAG_BAD_LENGTH 0x20
374#define SENSE_FLAG_END_OF_MEDIA 0x40
375#define SENSE_FLAG_FILE_MARK 0x80
376struct sense_data {
377 unsigned char ErrorCode;
378 unsigned char SegmentNumber;
379 unsigned char Flags;
380 unsigned char Information[4];
381 unsigned char AdditionalSenseLength;
382 unsigned char CommandSpecificInformation[4];
383 unsigned char AdditionalSenseCode;
384 unsigned char AdditionalSenseCodeQualifier;
385 unsigned char FieldReplaceableUnitCode;
386 unsigned char SenseKeySpecific[3];
387} __attribute__ ((packed));
388
389/*
390 * Default request sense buffer size
391 */
392
393#define SENSE_BUFFER_SIZE 18
394
395/***********************************************************************
396 * Helper routines
397 ***********************************************************************/
398
399/**************************************************************************
400 * isd200_build_sense
401 *
402 * Builds an artificial sense buffer to report the results of a
403 * failed command.
404 *
405 * RETURNS:
406 * void
407 */
408static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
409{
410 struct isd200_info *info = (struct isd200_info *)us->extra;
411 struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
412 unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET];
413
414 if(error & ATA_ERROR_MEDIA_CHANGE) {
415 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
416 buf->AdditionalSenseLength = 0xb;
417 buf->Flags = UNIT_ATTENTION;
418 buf->AdditionalSenseCode = 0;
419 buf->AdditionalSenseCodeQualifier = 0;
420 } else if (error & ATA_MCR) {
421 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
422 buf->AdditionalSenseLength = 0xb;
423 buf->Flags = UNIT_ATTENTION;
424 buf->AdditionalSenseCode = 0;
425 buf->AdditionalSenseCodeQualifier = 0;
426 } else if (error & ATA_TRK0NF) {
427 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
428 buf->AdditionalSenseLength = 0xb;
429 buf->Flags = NOT_READY;
430 buf->AdditionalSenseCode = 0;
431 buf->AdditionalSenseCodeQualifier = 0;
432 } else if (error & ATA_UNC) {
433 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
434 buf->AdditionalSenseLength = 0xb;
435 buf->Flags = DATA_PROTECT;
436 buf->AdditionalSenseCode = 0;
437 buf->AdditionalSenseCodeQualifier = 0;
438 } else {
439 buf->ErrorCode = 0;
440 buf->AdditionalSenseLength = 0;
441 buf->Flags = 0;
442 buf->AdditionalSenseCode = 0;
443 buf->AdditionalSenseCodeQualifier = 0;
444 }
445}
446
447
448/***********************************************************************
449 * Transport routines
450 ***********************************************************************/
451
452/**************************************************************************
453 * isd200_set_srb(), isd200_srb_set_bufflen()
454 *
455 * Two helpers to facilitate in initialization of scsi_cmnd structure
456 * Will need to change when struct scsi_cmnd changes
457 */
458static void isd200_set_srb(struct isd200_info *info,
459 enum dma_data_direction dir, void* buff, unsigned bufflen)
460{
461 struct scsi_cmnd *srb = &info->srb;
462
463 if (buff)
464 sg_init_one(&info->sg, buff, bufflen);
465
466 srb->sc_data_direction = dir;
467 srb->sdb.table.sgl = buff ? &info->sg : NULL;
468 srb->sdb.length = bufflen;
469 srb->sdb.table.nents = buff ? 1 : 0;
470}
471
472static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen)
473{
474 srb->sdb.length = bufflen;
475}
476
477
478/**************************************************************************
479 * isd200_action
480 *
481 * Routine for sending commands to the isd200
482 *
483 * RETURNS:
484 * ISD status code
485 */
486static int isd200_action( struct us_data *us, int action,
487 void* pointer, int value )
488{
489 union ata_cdb ata;
490 /* static to prevent this large struct being placed on the valuable stack */
491 static struct scsi_device srb_dev;
492 struct isd200_info *info = (struct isd200_info *)us->extra;
493 struct scsi_cmnd *srb = &info->srb;
494 int status;
495
496 memset(&ata, 0, sizeof(ata));
497 srb->cmnd = info->cmnd;
498 srb->device = &srb_dev;
499
500 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
501 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
502 ata.generic.TransferBlockSize = 1;
503
504 switch ( action ) {
505 case ACTION_READ_STATUS:
506 usb_stor_dbg(us, " isd200_action(READ_STATUS)\n");
507 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
508 ata.generic.RegisterSelect =
509 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
510 REG_STATUS | REG_ERROR;
511 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
512 break;
513
514 case ACTION_ENUM:
515 usb_stor_dbg(us, " isd200_action(ENUM,0x%02x)\n", value);
516 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
517 ACTION_SELECT_3|ACTION_SELECT_4|
518 ACTION_SELECT_5;
519 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
520 ata.write.DeviceHeadByte = value;
521 isd200_set_srb(info, DMA_NONE, NULL, 0);
522 break;
523
524 case ACTION_RESET:
525 usb_stor_dbg(us, " isd200_action(RESET)\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_RESET_CONTROLLER;
530 isd200_set_srb(info, DMA_NONE, NULL, 0);
531 break;
532
533 case ACTION_REENABLE:
534 usb_stor_dbg(us, " isd200_action(REENABLE)\n");
535 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
536 ACTION_SELECT_3|ACTION_SELECT_4;
537 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
538 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
539 isd200_set_srb(info, DMA_NONE, NULL, 0);
540 break;
541
542 case ACTION_SOFT_RESET:
543 usb_stor_dbg(us, " isd200_action(SOFT_RESET)\n");
544 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
545 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
546 ata.write.DeviceHeadByte = info->DeviceHead;
547 ata.write.CommandByte = ATA_CMD_DEV_RESET;
548 isd200_set_srb(info, DMA_NONE, NULL, 0);
549 break;
550
551 case ACTION_IDENTIFY:
552 usb_stor_dbg(us, " isd200_action(IDENTIFY)\n");
553 ata.generic.RegisterSelect = REG_COMMAND;
554 ata.write.CommandByte = ATA_CMD_ID_ATA;
555 isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
556 ATA_ID_WORDS * 2);
557 break;
558
559 default:
560 usb_stor_dbg(us, "Error: Undefined action %d\n", action);
561 return ISD200_ERROR;
562 }
563
564 memcpy(srb->cmnd, &ata, sizeof(ata.generic));
565 srb->cmd_len = sizeof(ata.generic);
566 status = usb_stor_Bulk_transport(srb, us);
567 if (status == USB_STOR_TRANSPORT_GOOD)
568 status = ISD200_GOOD;
569 else {
570 usb_stor_dbg(us, " isd200_action(0x%02x) error: %d\n",
571 action, status);
572 status = ISD200_ERROR;
573 /* need to reset device here */
574 }
575
576 return status;
577}
578
579/**************************************************************************
580 * isd200_read_regs
581 *
582 * Read ATA Registers
583 *
584 * RETURNS:
585 * ISD status code
586 */
587static int isd200_read_regs( struct us_data *us )
588{
589 struct isd200_info *info = (struct isd200_info *)us->extra;
590 int retStatus = ISD200_GOOD;
591 int transferStatus;
592
593 usb_stor_dbg(us, "Entering isd200_IssueATAReadRegs\n");
594
595 transferStatus = isd200_action( us, ACTION_READ_STATUS,
596 info->RegsBuf, sizeof(info->ATARegs) );
597 if (transferStatus != ISD200_TRANSPORT_GOOD) {
598 usb_stor_dbg(us, " Error reading ATA registers\n");
599 retStatus = ISD200_ERROR;
600 } else {
601 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
602 usb_stor_dbg(us, " Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n",
603 info->ATARegs[ATA_REG_ERROR_OFFSET]);
604 }
605
606 return retStatus;
607}
608
609
610/**************************************************************************
611 * Invoke the transport and basic error-handling/recovery methods
612 *
613 * This is used by the protocol layers to actually send the message to
614 * the device and receive the response.
615 */
616static void isd200_invoke_transport( struct us_data *us,
617 struct scsi_cmnd *srb,
618 union ata_cdb *ataCdb )
619{
620 int need_auto_sense = 0;
621 int transferStatus;
622 int result;
623
624 /* send the command to the transport layer */
625 memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
626 srb->cmd_len = sizeof(ataCdb->generic);
627 transferStatus = usb_stor_Bulk_transport(srb, us);
628
629 /* if the command gets aborted by the higher layers, we need to
630 * short-circuit all other processing
631 */
632 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
633 usb_stor_dbg(us, "-- command was aborted\n");
634 goto Handle_Abort;
635 }
636
637 switch (transferStatus) {
638
639 case USB_STOR_TRANSPORT_GOOD:
640 /* Indicate a good result */
641 srb->result = SAM_STAT_GOOD;
642 break;
643
644 case USB_STOR_TRANSPORT_NO_SENSE:
645 usb_stor_dbg(us, "-- transport indicates protocol failure\n");
646 srb->result = SAM_STAT_CHECK_CONDITION;
647 return;
648
649 case USB_STOR_TRANSPORT_FAILED:
650 usb_stor_dbg(us, "-- transport indicates command failure\n");
651 need_auto_sense = 1;
652 break;
653
654 case USB_STOR_TRANSPORT_ERROR:
655 usb_stor_dbg(us, "-- transport indicates transport error\n");
656 srb->result = DID_ERROR << 16;
657 /* Need reset here */
658 return;
659
660 default:
661 usb_stor_dbg(us, "-- transport indicates unknown error\n");
662 srb->result = DID_ERROR << 16;
663 /* Need reset here */
664 return;
665 }
666
667 if ((scsi_get_resid(srb) > 0) &&
668 !((srb->cmnd[0] == REQUEST_SENSE) ||
669 (srb->cmnd[0] == INQUIRY) ||
670 (srb->cmnd[0] == MODE_SENSE) ||
671 (srb->cmnd[0] == LOG_SENSE) ||
672 (srb->cmnd[0] == MODE_SENSE_10))) {
673 usb_stor_dbg(us, "-- unexpectedly short transfer\n");
674 need_auto_sense = 1;
675 }
676
677 if (need_auto_sense) {
678 result = isd200_read_regs(us);
679 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
680 usb_stor_dbg(us, "-- auto-sense aborted\n");
681 goto Handle_Abort;
682 }
683 if (result == ISD200_GOOD) {
684 isd200_build_sense(us, srb);
685 srb->result = SAM_STAT_CHECK_CONDITION;
686
687 /* If things are really okay, then let's show that */
688 if ((srb->sense_buffer[2] & 0xf) == 0x0)
689 srb->result = SAM_STAT_GOOD;
690 } else {
691 srb->result = DID_ERROR << 16;
692 /* Need reset here */
693 }
694 }
695
696 /* Regardless of auto-sense, if we _know_ we have an error
697 * condition, show that in the result code
698 */
699 if (transferStatus == USB_STOR_TRANSPORT_FAILED)
700 srb->result = SAM_STAT_CHECK_CONDITION;
701 return;
702
703 /* abort processing: the bulk-only transport requires a reset
704 * following an abort */
705 Handle_Abort:
706 srb->result = DID_ABORT << 16;
707
708 /* permit the reset transfer to take place */
709 clear_bit(US_FLIDX_ABORTING, &us->dflags);
710 /* Need reset here */
711}
712
713#ifdef CONFIG_USB_STORAGE_DEBUG
714static void isd200_log_config(struct us_data *us, struct isd200_info *info)
715{
716 usb_stor_dbg(us, " Event Notification: 0x%x\n",
717 info->ConfigData.EventNotification);
718 usb_stor_dbg(us, " External Clock: 0x%x\n",
719 info->ConfigData.ExternalClock);
720 usb_stor_dbg(us, " ATA Init Timeout: 0x%x\n",
721 info->ConfigData.ATAInitTimeout);
722 usb_stor_dbg(us, " ATAPI Command Block Size: 0x%x\n",
723 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
724 usb_stor_dbg(us, " Master/Slave Selection: 0x%x\n",
725 info->ConfigData.ATAConfig & ATACFG_MASTER);
726 usb_stor_dbg(us, " ATAPI Reset: 0x%x\n",
727 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
728 usb_stor_dbg(us, " ATA Timing: 0x%x\n",
729 info->ConfigData.ATAConfig & ATACFG_TIMING);
730 usb_stor_dbg(us, " ATA Major Command: 0x%x\n",
731 info->ConfigData.ATAMajorCommand);
732 usb_stor_dbg(us, " ATA Minor Command: 0x%x\n",
733 info->ConfigData.ATAMinorCommand);
734 usb_stor_dbg(us, " Init Status: 0x%x\n",
735 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
736 usb_stor_dbg(us, " Config Descriptor 2: 0x%x\n",
737 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
738 usb_stor_dbg(us, " Skip Device Boot: 0x%x\n",
739 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
740 usb_stor_dbg(us, " ATA 3 State Supsend: 0x%x\n",
741 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
742 usb_stor_dbg(us, " Descriptor Override: 0x%x\n",
743 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
744 usb_stor_dbg(us, " Last LUN Identifier: 0x%x\n",
745 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
746 usb_stor_dbg(us, " SRST Enable: 0x%x\n",
747 info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
748}
749#endif
750
751/**************************************************************************
752 * isd200_write_config
753 *
754 * Write the ISD200 Configuration data
755 *
756 * RETURNS:
757 * ISD status code
758 */
759static int isd200_write_config( struct us_data *us )
760{
761 struct isd200_info *info = (struct isd200_info *)us->extra;
762 int retStatus = ISD200_GOOD;
763 int result;
764
765#ifdef CONFIG_USB_STORAGE_DEBUG
766 usb_stor_dbg(us, "Entering isd200_write_config\n");
767 usb_stor_dbg(us, " Writing the following ISD200 Config Data:\n");
768 isd200_log_config(us, info);
769#endif
770
771 /* let's send the command via the control pipe */
772 result = usb_stor_ctrl_transfer(
773 us,
774 us->send_ctrl_pipe,
775 0x01,
776 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
777 0x0000,
778 0x0002,
779 (void *) &info->ConfigData,
780 sizeof(info->ConfigData));
781
782 if (result >= 0) {
783 usb_stor_dbg(us, " ISD200 Config Data was written successfully\n");
784 } else {
785 usb_stor_dbg(us, " Request to write ISD200 Config Data failed!\n");
786 retStatus = ISD200_ERROR;
787 }
788
789 usb_stor_dbg(us, "Leaving isd200_write_config %08X\n", retStatus);
790 return retStatus;
791}
792
793
794/**************************************************************************
795 * isd200_read_config
796 *
797 * Reads the ISD200 Configuration data
798 *
799 * RETURNS:
800 * ISD status code
801 */
802static int isd200_read_config( struct us_data *us )
803{
804 struct isd200_info *info = (struct isd200_info *)us->extra;
805 int retStatus = ISD200_GOOD;
806 int result;
807
808 usb_stor_dbg(us, "Entering isd200_read_config\n");
809
810 /* read the configuration information from ISD200. Use this to */
811 /* determine what the special ATA CDB bytes are. */
812
813 result = usb_stor_ctrl_transfer(
814 us,
815 us->recv_ctrl_pipe,
816 0x02,
817 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
818 0x0000,
819 0x0002,
820 (void *) &info->ConfigData,
821 sizeof(info->ConfigData));
822
823
824 if (result >= 0) {
825 usb_stor_dbg(us, " Retrieved the following ISD200 Config Data:\n");
826#ifdef CONFIG_USB_STORAGE_DEBUG
827 isd200_log_config(us, info);
828#endif
829 } else {
830 usb_stor_dbg(us, " Request to get ISD200 Config Data failed!\n");
831 retStatus = ISD200_ERROR;
832 }
833
834 usb_stor_dbg(us, "Leaving isd200_read_config %08X\n", retStatus);
835 return retStatus;
836}
837
838
839/**************************************************************************
840 * isd200_atapi_soft_reset
841 *
842 * Perform an Atapi Soft Reset on the device
843 *
844 * RETURNS:
845 * NT status code
846 */
847static int isd200_atapi_soft_reset( struct us_data *us )
848{
849 int retStatus = ISD200_GOOD;
850 int transferStatus;
851
852 usb_stor_dbg(us, "Entering isd200_atapi_soft_reset\n");
853
854 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
855 if (transferStatus != ISD200_TRANSPORT_GOOD) {
856 usb_stor_dbg(us, " Error issuing Atapi Soft Reset\n");
857 retStatus = ISD200_ERROR;
858 }
859
860 usb_stor_dbg(us, "Leaving isd200_atapi_soft_reset %08X\n", retStatus);
861 return retStatus;
862}
863
864
865/**************************************************************************
866 * isd200_srst
867 *
868 * Perform an SRST on the device
869 *
870 * RETURNS:
871 * ISD status code
872 */
873static int isd200_srst( struct us_data *us )
874{
875 int retStatus = ISD200_GOOD;
876 int transferStatus;
877
878 usb_stor_dbg(us, "Entering isd200_SRST\n");
879
880 transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
881
882 /* check to see if this request failed */
883 if (transferStatus != ISD200_TRANSPORT_GOOD) {
884 usb_stor_dbg(us, " Error issuing SRST\n");
885 retStatus = ISD200_ERROR;
886 } else {
887 /* delay 10ms to give the drive a chance to see it */
888 msleep(10);
889
890 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
891 if (transferStatus != ISD200_TRANSPORT_GOOD) {
892 usb_stor_dbg(us, " Error taking drive out of reset\n");
893 retStatus = ISD200_ERROR;
894 } else {
895 /* delay 50ms to give the drive a chance to recover after SRST */
896 msleep(50);
897 }
898 }
899
900 usb_stor_dbg(us, "Leaving isd200_srst %08X\n", retStatus);
901 return retStatus;
902}
903
904
905/**************************************************************************
906 * isd200_try_enum
907 *
908 * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
909 * and tries to analyze the status registers
910 *
911 * RETURNS:
912 * ISD status code
913 */
914static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
915 int detect )
916{
917 int status = ISD200_GOOD;
918 unsigned long endTime;
919 struct isd200_info *info = (struct isd200_info *)us->extra;
920 unsigned char *regs = info->RegsBuf;
921 int recheckAsMaster = 0;
922
923 if ( detect )
924 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
925 else
926 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
927
928 /* loop until we detect !BSY or timeout */
929 while(1) {
930
931 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
932 if ( status != ISD200_GOOD )
933 break;
934
935 status = isd200_action( us, ACTION_READ_STATUS,
936 regs, 8 );
937 if ( status != ISD200_GOOD )
938 break;
939
940 if (!detect) {
941 if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) {
942 usb_stor_dbg(us, " %s status is still BSY, try again...\n",
943 master_slave == ATA_ADDRESS_DEVHEAD_STD ?
944 "Master" : "Slave");
945 } else {
946 usb_stor_dbg(us, " %s status !BSY, continue with next operation\n",
947 master_slave == ATA_ADDRESS_DEVHEAD_STD ?
948 "Master" : "Slave");
949 break;
950 }
951 }
952 /* check for ATA_BUSY and */
953 /* ATA_DF (workaround ATA Zip drive) and */
954 /* ATA_ERR (workaround for Archos CD-ROM) */
955 else if (regs[ATA_REG_STATUS_OFFSET] &
956 (ATA_BUSY | ATA_DF | ATA_ERR)) {
957 usb_stor_dbg(us, " Status indicates it is not ready, try again...\n");
958 }
959 /* check for DRDY, ATA devices set DRDY after SRST */
960 else if (regs[ATA_REG_STATUS_OFFSET] & ATA_DRDY) {
961 usb_stor_dbg(us, " Identified ATA device\n");
962 info->DeviceFlags |= DF_ATA_DEVICE;
963 info->DeviceHead = master_slave;
964 break;
965 }
966 /* check Cylinder High/Low to
967 determine if it is an ATAPI device
968 */
969 else if (regs[ATA_REG_HCYL_OFFSET] == 0xEB &&
970 regs[ATA_REG_LCYL_OFFSET] == 0x14) {
971 /* It seems that the RICOH
972 MP6200A CD/RW drive will
973 report itself okay as a
974 slave when it is really a
975 master. So this check again
976 as a master device just to
977 make sure it doesn't report
978 itself okay as a master also
979 */
980 if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
981 !recheckAsMaster) {
982 usb_stor_dbg(us, " Identified ATAPI device as slave. Rechecking again as master\n");
983 recheckAsMaster = 1;
984 master_slave = ATA_ADDRESS_DEVHEAD_STD;
985 } else {
986 usb_stor_dbg(us, " Identified ATAPI device\n");
987 info->DeviceHead = master_slave;
988
989 status = isd200_atapi_soft_reset(us);
990 break;
991 }
992 } else {
993 usb_stor_dbg(us, " Not ATA, not ATAPI - Weird\n");
994 break;
995 }
996
997 /* check for timeout on this request */
998 if (time_after_eq(jiffies, endTime)) {
999 if (!detect)
1000 usb_stor_dbg(us, " BSY check timeout, just continue with next operation...\n");
1001 else
1002 usb_stor_dbg(us, " Device detect timeout!\n");
1003 break;
1004 }
1005 }
1006
1007 return status;
1008}
1009
1010/**************************************************************************
1011 * isd200_manual_enum
1012 *
1013 * Determines if the drive attached is an ATA or ATAPI and if it is a
1014 * master or slave.
1015 *
1016 * RETURNS:
1017 * ISD status code
1018 */
1019static int isd200_manual_enum(struct us_data *us)
1020{
1021 struct isd200_info *info = (struct isd200_info *)us->extra;
1022 int retStatus = ISD200_GOOD;
1023
1024 usb_stor_dbg(us, "Entering isd200_manual_enum\n");
1025
1026 retStatus = isd200_read_config(us);
1027 if (retStatus == ISD200_GOOD) {
1028 int isslave;
1029 /* master or slave? */
1030 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
1031 if (retStatus == ISD200_GOOD)
1032 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
1033
1034 if (retStatus == ISD200_GOOD) {
1035 retStatus = isd200_srst(us);
1036 if (retStatus == ISD200_GOOD)
1037 /* ata or atapi? */
1038 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
1039 }
1040
1041 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
1042 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
1043 usb_stor_dbg(us, " Setting Master/Slave selection to %d\n",
1044 isslave);
1045 info->ConfigData.ATAConfig &= 0x3f;
1046 info->ConfigData.ATAConfig |= (isslave<<6);
1047 retStatus = isd200_write_config(us);
1048 }
1049 }
1050
1051 usb_stor_dbg(us, "Leaving isd200_manual_enum %08X\n", retStatus);
1052 return(retStatus);
1053}
1054
1055static void isd200_fix_driveid(u16 *id)
1056{
1057#ifndef __LITTLE_ENDIAN
1058# ifdef __BIG_ENDIAN
1059 int i;
1060
1061 for (i = 0; i < ATA_ID_WORDS; i++)
1062 id[i] = __le16_to_cpu(id[i]);
1063# else
1064# error "Please fix <asm/byteorder.h>"
1065# endif
1066#endif
1067}
1068
1069static void isd200_dump_driveid(struct us_data *us, u16 *id)
1070{
1071 usb_stor_dbg(us, " Identify Data Structure:\n");
1072 usb_stor_dbg(us, " config = 0x%x\n", id[ATA_ID_CONFIG]);
1073 usb_stor_dbg(us, " cyls = 0x%x\n", id[ATA_ID_CYLS]);
1074 usb_stor_dbg(us, " heads = 0x%x\n", id[ATA_ID_HEADS]);
1075 usb_stor_dbg(us, " track_bytes = 0x%x\n", id[4]);
1076 usb_stor_dbg(us, " sector_bytes = 0x%x\n", id[5]);
1077 usb_stor_dbg(us, " sectors = 0x%x\n", id[ATA_ID_SECTORS]);
1078 usb_stor_dbg(us, " serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]);
1079 usb_stor_dbg(us, " buf_type = 0x%x\n", id[20]);
1080 usb_stor_dbg(us, " buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]);
1081 usb_stor_dbg(us, " ecc_bytes = 0x%x\n", id[22]);
1082 usb_stor_dbg(us, " fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]);
1083 usb_stor_dbg(us, " model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]);
1084 usb_stor_dbg(us, " max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff);
1085 usb_stor_dbg(us, " dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]);
1086 usb_stor_dbg(us, " capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8);
1087 usb_stor_dbg(us, " tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8);
1088 usb_stor_dbg(us, " tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8);
1089 usb_stor_dbg(us, " field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]);
1090 usb_stor_dbg(us, " cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]);
1091 usb_stor_dbg(us, " cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]);
1092 usb_stor_dbg(us, " cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]);
1093 usb_stor_dbg(us, " cur_capacity = 0x%x\n", ata_id_u32(id, 57));
1094 usb_stor_dbg(us, " multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff);
1095 usb_stor_dbg(us, " lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY));
1096 usb_stor_dbg(us, " command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]);
1097 usb_stor_dbg(us, " command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]);
1098}
1099
1100/**************************************************************************
1101 * isd200_get_inquiry_data
1102 *
1103 * Get inquiry data
1104 *
1105 * RETURNS:
1106 * ISD status code
1107 */
1108static int isd200_get_inquiry_data( struct us_data *us )
1109{
1110 struct isd200_info *info = (struct isd200_info *)us->extra;
1111 int retStatus = ISD200_GOOD;
1112 u16 *id = info->id;
1113
1114 usb_stor_dbg(us, "Entering isd200_get_inquiry_data\n");
1115
1116 /* set default to Master */
1117 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1118
1119 /* attempt to manually enumerate this device */
1120 retStatus = isd200_manual_enum(us);
1121 if (retStatus == ISD200_GOOD) {
1122 int transferStatus;
1123
1124 /* check for an ATA device */
1125 if (info->DeviceFlags & DF_ATA_DEVICE) {
1126 /* this must be an ATA device */
1127 /* perform an ATA Command Identify */
1128 transferStatus = isd200_action( us, ACTION_IDENTIFY,
1129 id, ATA_ID_WORDS * 2);
1130 if (transferStatus != ISD200_TRANSPORT_GOOD) {
1131 /* Error issuing ATA Command Identify */
1132 usb_stor_dbg(us, " Error issuing ATA Command Identify\n");
1133 retStatus = ISD200_ERROR;
1134 } else {
1135 /* ATA Command Identify successful */
1136 int i;
1137 __be16 *src;
1138 __u16 *dest;
1139
1140 isd200_fix_driveid(id);
1141 isd200_dump_driveid(us, id);
1142
1143 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1144
1145 /* Standard IDE interface only supports disks */
1146 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1147
1148 /* The length must be at least 36 (5 + 31) */
1149 info->InquiryData.AdditionalLength = 0x1F;
1150
1151 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) {
1152 /* set the removable bit */
1153 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1154 info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1155 }
1156
1157 /* Fill in vendor identification fields */
1158 src = (__be16 *)&id[ATA_ID_PROD];
1159 dest = (__u16*)info->InquiryData.VendorId;
1160 for (i=0;i<4;i++)
1161 dest[i] = be16_to_cpu(src[i]);
1162
1163 src = (__be16 *)&id[ATA_ID_PROD + 8/2];
1164 dest = (__u16*)info->InquiryData.ProductId;
1165 for (i=0;i<8;i++)
1166 dest[i] = be16_to_cpu(src[i]);
1167
1168 src = (__be16 *)&id[ATA_ID_FW_REV];
1169 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1170 for (i=0;i<2;i++)
1171 dest[i] = be16_to_cpu(src[i]);
1172
1173 /* determine if it supports Media Status Notification */
1174 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) {
1175 usb_stor_dbg(us, " Device supports Media Status Notification\n");
1176
1177 /* Indicate that it is enabled, even though it is not
1178 * This allows the lock/unlock of the media to work
1179 * correctly.
1180 */
1181 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1182 }
1183 else
1184 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1185
1186 }
1187 } else {
1188 /*
1189 * this must be an ATAPI device
1190 * use an ATAPI protocol (Transparent SCSI)
1191 */
1192 us->protocol_name = "Transparent SCSI";
1193 us->proto_handler = usb_stor_transparent_scsi_command;
1194
1195 usb_stor_dbg(us, "Protocol changed to: %s\n",
1196 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 usb_stor_dbg(us, "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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1374
1375 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1376 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n",
1377 srb->cmnd[4]);
1378
1379 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1380 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1381 ataCdb->generic.TransferBlockSize = 1;
1382 ataCdb->generic.RegisterSelect = REG_COMMAND;
1383 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1384 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
1385 isd200_srb_set_bufflen(srb, 0);
1386 } else {
1387 usb_stor_dbg(us, " Not removeable media, just report okay\n");
1388 srb->result = SAM_STAT_GOOD;
1389 sendToTransport = 0;
1390 }
1391 break;
1392
1393 case START_STOP:
1394 usb_stor_dbg(us, " ATA OUT - SCSIOP_START_STOP_UNIT\n");
1395 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1396
1397 if ((srb->cmnd[4] & 0x3) == 0x2) {
1398 usb_stor_dbg(us, " Media Eject\n");
1399 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1400 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1401 ataCdb->generic.TransferBlockSize = 0;
1402 ataCdb->generic.RegisterSelect = REG_COMMAND;
1403 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1404 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1405 usb_stor_dbg(us, " Get Media Status\n");
1406 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1407 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1408 ataCdb->generic.TransferBlockSize = 1;
1409 ataCdb->generic.RegisterSelect = REG_COMMAND;
1410 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1411 isd200_srb_set_bufflen(srb, 0);
1412 } else {
1413 usb_stor_dbg(us, " Nothing to do, just report okay\n");
1414 srb->result = SAM_STAT_GOOD;
1415 sendToTransport = 0;
1416 }
1417 break;
1418
1419 default:
1420 usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n",
1421 srb->cmnd[0]);
1422 srb->result = DID_ERROR << 16;
1423 sendToTransport = 0;
1424 break;
1425 }
1426
1427 return(sendToTransport);
1428}
1429
1430
1431/**************************************************************************
1432 * isd200_free_info
1433 *
1434 * Frees the driver structure.
1435 */
1436static void isd200_free_info_ptrs(void *info_)
1437{
1438 struct isd200_info *info = (struct isd200_info *) info_;
1439
1440 if (info) {
1441 kfree(info->id);
1442 kfree(info->RegsBuf);
1443 kfree(info->srb.sense_buffer);
1444 }
1445}
1446
1447/**************************************************************************
1448 * isd200_init_info
1449 *
1450 * Allocates (if necessary) and initializes the driver structure.
1451 *
1452 * RETURNS:
1453 * ISD status code
1454 */
1455static int isd200_init_info(struct us_data *us)
1456{
1457 int retStatus = ISD200_GOOD;
1458 struct isd200_info *info;
1459
1460 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1461 if (!info)
1462 retStatus = ISD200_ERROR;
1463 else {
1464 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
1465 info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1466 info->srb.sense_buffer =
1467 kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1468 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1469 isd200_free_info_ptrs(info);
1470 kfree(info);
1471 retStatus = ISD200_ERROR;
1472 }
1473 }
1474
1475 if (retStatus == ISD200_GOOD) {
1476 us->extra = info;
1477 us->extra_destructor = isd200_free_info_ptrs;
1478 }
1479
1480 return retStatus;
1481}
1482
1483/**************************************************************************
1484 * Initialization for the ISD200
1485 */
1486
1487static int isd200_Initialization(struct us_data *us)
1488{
1489 usb_stor_dbg(us, "ISD200 Initialization...\n");
1490
1491 /* Initialize ISD200 info struct */
1492
1493 if (isd200_init_info(us) == ISD200_ERROR) {
1494 usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n");
1495 } else {
1496 /* Get device specific data */
1497
1498 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1499 usb_stor_dbg(us, "ISD200 Initialization Failure\n");
1500 else
1501 usb_stor_dbg(us, "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 usb_stor_dbg(us, "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);