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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
63#define DRV_NAME "ums-isd200"
64
65MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
66MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>");
67MODULE_LICENSE("GPL");
68
69static int isd200_Initialization(struct us_data *us);
70
71
72/*
73 * The table of devices
74 */
75#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
76 vendorName, productName, useProtocol, useTransport, \
77 initFunction, flags) \
78{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
79 .driver_info = (flags) }
80
81static struct usb_device_id isd200_usb_ids[] = {
82# include "unusual_isd200.h"
83 { } /* Terminating entry */
84};
85MODULE_DEVICE_TABLE(usb, isd200_usb_ids);
86
87#undef UNUSUAL_DEV
88
89/*
90 * The flags table
91 */
92#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
93 vendor_name, product_name, use_protocol, use_transport, \
94 init_function, Flags) \
95{ \
96 .vendorName = vendor_name, \
97 .productName = product_name, \
98 .useProtocol = use_protocol, \
99 .useTransport = use_transport, \
100 .initFunction = init_function, \
101}
102
103static struct us_unusual_dev isd200_unusual_dev_list[] = {
104# include "unusual_isd200.h"
105 { } /* Terminating entry */
106};
107
108#undef UNUSUAL_DEV
109
110/* Timeout defines (in Seconds) */
111
112#define ISD200_ENUM_BSY_TIMEOUT 35
113#define ISD200_ENUM_DETECT_TIMEOUT 30
114#define ISD200_DEFAULT_TIMEOUT 30
115
116/* device flags */
117#define DF_ATA_DEVICE 0x0001
118#define DF_MEDIA_STATUS_ENABLED 0x0002
119#define DF_REMOVABLE_MEDIA 0x0004
120
121/* capability bit definitions */
122#define CAPABILITY_DMA 0x01
123#define CAPABILITY_LBA 0x02
124
125/* command_setX bit definitions */
126#define COMMANDSET_REMOVABLE 0x02
127#define COMMANDSET_MEDIA_STATUS 0x10
128
129/* ATA Vendor Specific defines */
130#define ATA_ADDRESS_DEVHEAD_STD 0xa0
131#define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
132#define ATA_ADDRESS_DEVHEAD_SLAVE 0x10
133
134/* Action Select bits */
135#define ACTION_SELECT_0 0x01
136#define ACTION_SELECT_1 0x02
137#define ACTION_SELECT_2 0x04
138#define ACTION_SELECT_3 0x08
139#define ACTION_SELECT_4 0x10
140#define ACTION_SELECT_5 0x20
141#define ACTION_SELECT_6 0x40
142#define ACTION_SELECT_7 0x80
143
144/* Register Select bits */
145#define REG_ALTERNATE_STATUS 0x01
146#define REG_DEVICE_CONTROL 0x01
147#define REG_ERROR 0x02
148#define REG_FEATURES 0x02
149#define REG_SECTOR_COUNT 0x04
150#define REG_SECTOR_NUMBER 0x08
151#define REG_CYLINDER_LOW 0x10
152#define REG_CYLINDER_HIGH 0x20
153#define REG_DEVICE_HEAD 0x40
154#define REG_STATUS 0x80
155#define REG_COMMAND 0x80
156
157/* ATA registers offset definitions */
158#define ATA_REG_ERROR_OFFSET 1
159#define ATA_REG_LCYL_OFFSET 4
160#define ATA_REG_HCYL_OFFSET 5
161#define ATA_REG_STATUS_OFFSET 7
162
163/* ATA error definitions not in <linux/hdreg.h> */
164#define ATA_ERROR_MEDIA_CHANGE 0x20
165
166/* ATA command definitions not in <linux/hdreg.h> */
167#define ATA_COMMAND_GET_MEDIA_STATUS 0xDA
168#define ATA_COMMAND_MEDIA_EJECT 0xED
169
170/* ATA drive control definitions */
171#define ATA_DC_DISABLE_INTERRUPTS 0x02
172#define ATA_DC_RESET_CONTROLLER 0x04
173#define ATA_DC_REENABLE_CONTROLLER 0x00
174
175/*
176 * General purpose return codes
177 */
178
179#define ISD200_ERROR -1
180#define ISD200_GOOD 0
181
182/*
183 * Transport return codes
184 */
185
186#define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */
187#define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */
188#define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
189
190/* driver action codes */
191#define ACTION_READ_STATUS 0
192#define ACTION_RESET 1
193#define ACTION_REENABLE 2
194#define ACTION_SOFT_RESET 3
195#define ACTION_ENUM 4
196#define ACTION_IDENTIFY 5
197
198
199/*
200 * ata_cdb struct
201 */
202
203
204union ata_cdb {
205 struct {
206 unsigned char SignatureByte0;
207 unsigned char SignatureByte1;
208 unsigned char ActionSelect;
209 unsigned char RegisterSelect;
210 unsigned char TransferBlockSize;
211 unsigned char WriteData3F6;
212 unsigned char WriteData1F1;
213 unsigned char WriteData1F2;
214 unsigned char WriteData1F3;
215 unsigned char WriteData1F4;
216 unsigned char WriteData1F5;
217 unsigned char WriteData1F6;
218 unsigned char WriteData1F7;
219 unsigned char Reserved[3];
220 } generic;
221
222 struct {
223 unsigned char SignatureByte0;
224 unsigned char SignatureByte1;
225 unsigned char ActionSelect;
226 unsigned char RegisterSelect;
227 unsigned char TransferBlockSize;
228 unsigned char AlternateStatusByte;
229 unsigned char ErrorByte;
230 unsigned char SectorCountByte;
231 unsigned char SectorNumberByte;
232 unsigned char CylinderLowByte;
233 unsigned char CylinderHighByte;
234 unsigned char DeviceHeadByte;
235 unsigned char StatusByte;
236 unsigned char Reserved[3];
237 } read;
238
239 struct {
240 unsigned char SignatureByte0;
241 unsigned char SignatureByte1;
242 unsigned char ActionSelect;
243 unsigned char RegisterSelect;
244 unsigned char TransferBlockSize;
245 unsigned char DeviceControlByte;
246 unsigned char FeaturesByte;
247 unsigned char SectorCountByte;
248 unsigned char SectorNumberByte;
249 unsigned char CylinderLowByte;
250 unsigned char CylinderHighByte;
251 unsigned char DeviceHeadByte;
252 unsigned char CommandByte;
253 unsigned char Reserved[3];
254 } write;
255};
256
257
258/*
259 * Inquiry data structure. This is the data returned from the target
260 * after it receives an inquiry.
261 *
262 * This structure may be extended by the number of bytes specified
263 * in the field AdditionalLength. The defined size constant only
264 * includes fields through ProductRevisionLevel.
265 */
266
267/*
268 * DeviceType field
269 */
270#define DIRECT_ACCESS_DEVICE 0x00 /* disks */
271#define DEVICE_REMOVABLE 0x80
272
273struct inquiry_data {
274 unsigned char DeviceType;
275 unsigned char DeviceTypeModifier;
276 unsigned char Versions;
277 unsigned char Format;
278 unsigned char AdditionalLength;
279 unsigned char Reserved[2];
280 unsigned char Capability;
281 unsigned char VendorId[8];
282 unsigned char ProductId[16];
283 unsigned char ProductRevisionLevel[4];
284 unsigned char VendorSpecific[20];
285 unsigned char Reserved3[40];
286} __attribute__ ((packed));
287
288/*
289 * INQUIRY data buffer size
290 */
291
292#define INQUIRYDATABUFFERSIZE 36
293
294
295/*
296 * ISD200 CONFIG data struct
297 */
298
299#define ATACFG_TIMING 0x0f
300#define ATACFG_ATAPI_RESET 0x10
301#define ATACFG_MASTER 0x20
302#define ATACFG_BLOCKSIZE 0xa0
303
304#define ATACFGE_LAST_LUN 0x07
305#define ATACFGE_DESC_OVERRIDE 0x08
306#define ATACFGE_STATE_SUSPEND 0x10
307#define ATACFGE_SKIP_BOOT 0x20
308#define ATACFGE_CONF_DESC2 0x40
309#define ATACFGE_INIT_STATUS 0x80
310
311#define CFG_CAPABILITY_SRST 0x01
312
313struct isd200_config {
314 unsigned char EventNotification;
315 unsigned char ExternalClock;
316 unsigned char ATAInitTimeout;
317 unsigned char ATAConfig;
318 unsigned char ATAMajorCommand;
319 unsigned char ATAMinorCommand;
320 unsigned char ATAExtraConfig;
321 unsigned char Capability;
322}__attribute__ ((packed));
323
324
325/*
326 * ISD200 driver information struct
327 */
328
329struct isd200_info {
330 struct inquiry_data InquiryData;
331 u16 *id;
332 struct isd200_config ConfigData;
333 unsigned char *RegsBuf;
334 unsigned char ATARegs[8];
335 unsigned char DeviceHead;
336 unsigned char DeviceFlags;
337
338 /* maximum number of LUNs supported */
339 unsigned char MaxLUNs;
340 unsigned char cmnd[BLK_MAX_CDB];
341 struct scsi_cmnd srb;
342 struct scatterlist sg;
343};
344
345
346/*
347 * Read Capacity Data - returned in Big Endian format
348 */
349
350struct read_capacity_data {
351 __be32 LogicalBlockAddress;
352 __be32 BytesPerBlock;
353};
354
355/*
356 * Read Block Limits Data - returned in Big Endian format
357 * This structure returns the maximum and minimum block
358 * size for a TAPE device.
359 */
360
361struct read_block_limits {
362 unsigned char Reserved;
363 unsigned char BlockMaximumSize[3];
364 unsigned char BlockMinimumSize[2];
365};
366
367
368/*
369 * Sense Data Format
370 */
371
372#define SENSE_ERRCODE 0x7f
373#define SENSE_ERRCODE_VALID 0x80
374#define SENSE_FLAG_SENSE_KEY 0x0f
375#define SENSE_FLAG_BAD_LENGTH 0x20
376#define SENSE_FLAG_END_OF_MEDIA 0x40
377#define SENSE_FLAG_FILE_MARK 0x80
378struct sense_data {
379 unsigned char ErrorCode;
380 unsigned char SegmentNumber;
381 unsigned char Flags;
382 unsigned char Information[4];
383 unsigned char AdditionalSenseLength;
384 unsigned char CommandSpecificInformation[4];
385 unsigned char AdditionalSenseCode;
386 unsigned char AdditionalSenseCodeQualifier;
387 unsigned char FieldReplaceableUnitCode;
388 unsigned char SenseKeySpecific[3];
389} __attribute__ ((packed));
390
391/*
392 * Default request sense buffer size
393 */
394
395#define SENSE_BUFFER_SIZE 18
396
397/***********************************************************************
398 * Helper routines
399 ***********************************************************************/
400
401/**************************************************************************
402 * isd200_build_sense
403 *
404 * Builds an artificial sense buffer to report the results of a
405 * failed command.
406 *
407 * RETURNS:
408 * void
409 */
410static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
411{
412 struct isd200_info *info = (struct isd200_info *)us->extra;
413 struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
414 unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET];
415
416 if(error & ATA_ERROR_MEDIA_CHANGE) {
417 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
418 buf->AdditionalSenseLength = 0xb;
419 buf->Flags = UNIT_ATTENTION;
420 buf->AdditionalSenseCode = 0;
421 buf->AdditionalSenseCodeQualifier = 0;
422 } else if (error & ATA_MCR) {
423 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
424 buf->AdditionalSenseLength = 0xb;
425 buf->Flags = UNIT_ATTENTION;
426 buf->AdditionalSenseCode = 0;
427 buf->AdditionalSenseCodeQualifier = 0;
428 } else if (error & ATA_TRK0NF) {
429 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
430 buf->AdditionalSenseLength = 0xb;
431 buf->Flags = NOT_READY;
432 buf->AdditionalSenseCode = 0;
433 buf->AdditionalSenseCodeQualifier = 0;
434 } else if (error & ATA_UNC) {
435 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
436 buf->AdditionalSenseLength = 0xb;
437 buf->Flags = DATA_PROTECT;
438 buf->AdditionalSenseCode = 0;
439 buf->AdditionalSenseCodeQualifier = 0;
440 } else {
441 buf->ErrorCode = 0;
442 buf->AdditionalSenseLength = 0;
443 buf->Flags = 0;
444 buf->AdditionalSenseCode = 0;
445 buf->AdditionalSenseCodeQualifier = 0;
446 }
447}
448
449
450/***********************************************************************
451 * Transport routines
452 ***********************************************************************/
453
454/**************************************************************************
455 * isd200_set_srb(), isd200_srb_set_bufflen()
456 *
457 * Two helpers to facilitate in initialization of scsi_cmnd structure
458 * Will need to change when struct scsi_cmnd changes
459 */
460static void isd200_set_srb(struct isd200_info *info,
461 enum dma_data_direction dir, void* buff, unsigned bufflen)
462{
463 struct scsi_cmnd *srb = &info->srb;
464
465 if (buff)
466 sg_init_one(&info->sg, buff, bufflen);
467
468 srb->sc_data_direction = dir;
469 srb->sdb.table.sgl = buff ? &info->sg : NULL;
470 srb->sdb.length = bufflen;
471 srb->sdb.table.nents = buff ? 1 : 0;
472}
473
474static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen)
475{
476 srb->sdb.length = bufflen;
477}
478
479
480/**************************************************************************
481 * isd200_action
482 *
483 * Routine for sending commands to the isd200
484 *
485 * RETURNS:
486 * ISD status code
487 */
488static int isd200_action( struct us_data *us, int action,
489 void* pointer, int value )
490{
491 union ata_cdb ata;
492 /* static to prevent this large struct being placed on the valuable stack */
493 static struct scsi_device srb_dev;
494 struct isd200_info *info = (struct isd200_info *)us->extra;
495 struct scsi_cmnd *srb = &info->srb;
496 int status;
497
498 memset(&ata, 0, sizeof(ata));
499 srb->cmnd = info->cmnd;
500 srb->device = &srb_dev;
501
502 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
503 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
504 ata.generic.TransferBlockSize = 1;
505
506 switch ( action ) {
507 case ACTION_READ_STATUS:
508 usb_stor_dbg(us, " isd200_action(READ_STATUS)\n");
509 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
510 ata.generic.RegisterSelect =
511 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
512 REG_STATUS | REG_ERROR;
513 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
514 break;
515
516 case ACTION_ENUM:
517 usb_stor_dbg(us, " isd200_action(ENUM,0x%02x)\n", value);
518 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
519 ACTION_SELECT_3|ACTION_SELECT_4|
520 ACTION_SELECT_5;
521 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
522 ata.write.DeviceHeadByte = value;
523 isd200_set_srb(info, DMA_NONE, NULL, 0);
524 break;
525
526 case ACTION_RESET:
527 usb_stor_dbg(us, " isd200_action(RESET)\n");
528 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
529 ACTION_SELECT_3|ACTION_SELECT_4;
530 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
531 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
532 isd200_set_srb(info, DMA_NONE, NULL, 0);
533 break;
534
535 case ACTION_REENABLE:
536 usb_stor_dbg(us, " isd200_action(REENABLE)\n");
537 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
538 ACTION_SELECT_3|ACTION_SELECT_4;
539 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
540 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
541 isd200_set_srb(info, DMA_NONE, NULL, 0);
542 break;
543
544 case ACTION_SOFT_RESET:
545 usb_stor_dbg(us, " isd200_action(SOFT_RESET)\n");
546 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
547 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
548 ata.write.DeviceHeadByte = info->DeviceHead;
549 ata.write.CommandByte = ATA_CMD_DEV_RESET;
550 isd200_set_srb(info, DMA_NONE, NULL, 0);
551 break;
552
553 case ACTION_IDENTIFY:
554 usb_stor_dbg(us, " isd200_action(IDENTIFY)\n");
555 ata.generic.RegisterSelect = REG_COMMAND;
556 ata.write.CommandByte = ATA_CMD_ID_ATA;
557 isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
558 ATA_ID_WORDS * 2);
559 break;
560
561 default:
562 usb_stor_dbg(us, "Error: Undefined action %d\n", action);
563 return ISD200_ERROR;
564 }
565
566 memcpy(srb->cmnd, &ata, sizeof(ata.generic));
567 srb->cmd_len = sizeof(ata.generic);
568 status = usb_stor_Bulk_transport(srb, us);
569 if (status == USB_STOR_TRANSPORT_GOOD)
570 status = ISD200_GOOD;
571 else {
572 usb_stor_dbg(us, " isd200_action(0x%02x) error: %d\n",
573 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 usb_stor_dbg(us, "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 usb_stor_dbg(us, " Error reading ATA registers\n");
601 retStatus = ISD200_ERROR;
602 } else {
603 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
604 usb_stor_dbg(us, " 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 usb_stor_dbg(us, "-- 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 usb_stor_dbg(us, "-- transport indicates protocol failure\n");
648 srb->result = SAM_STAT_CHECK_CONDITION;
649 return;
650
651 case USB_STOR_TRANSPORT_FAILED:
652 usb_stor_dbg(us, "-- transport indicates command failure\n");
653 need_auto_sense = 1;
654 break;
655
656 case USB_STOR_TRANSPORT_ERROR:
657 usb_stor_dbg(us, "-- transport indicates transport error\n");
658 srb->result = DID_ERROR << 16;
659 /* Need reset here */
660 return;
661
662 default:
663 usb_stor_dbg(us, "-- 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 usb_stor_dbg(us, "-- 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 usb_stor_dbg(us, "-- 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 us_data *us, struct isd200_info *info)
717{
718 usb_stor_dbg(us, " Event Notification: 0x%x\n",
719 info->ConfigData.EventNotification);
720 usb_stor_dbg(us, " External Clock: 0x%x\n",
721 info->ConfigData.ExternalClock);
722 usb_stor_dbg(us, " ATA Init Timeout: 0x%x\n",
723 info->ConfigData.ATAInitTimeout);
724 usb_stor_dbg(us, " ATAPI Command Block Size: 0x%x\n",
725 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
726 usb_stor_dbg(us, " Master/Slave Selection: 0x%x\n",
727 info->ConfigData.ATAConfig & ATACFG_MASTER);
728 usb_stor_dbg(us, " ATAPI Reset: 0x%x\n",
729 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
730 usb_stor_dbg(us, " ATA Timing: 0x%x\n",
731 info->ConfigData.ATAConfig & ATACFG_TIMING);
732 usb_stor_dbg(us, " ATA Major Command: 0x%x\n",
733 info->ConfigData.ATAMajorCommand);
734 usb_stor_dbg(us, " ATA Minor Command: 0x%x\n",
735 info->ConfigData.ATAMinorCommand);
736 usb_stor_dbg(us, " Init Status: 0x%x\n",
737 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
738 usb_stor_dbg(us, " Config Descriptor 2: 0x%x\n",
739 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
740 usb_stor_dbg(us, " Skip Device Boot: 0x%x\n",
741 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
742 usb_stor_dbg(us, " ATA 3 State Suspend: 0x%x\n",
743 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
744 usb_stor_dbg(us, " Descriptor Override: 0x%x\n",
745 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
746 usb_stor_dbg(us, " Last LUN Identifier: 0x%x\n",
747 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
748 usb_stor_dbg(us, " 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 usb_stor_dbg(us, "Entering isd200_write_config\n");
769 usb_stor_dbg(us, " Writing the following ISD200 Config Data:\n");
770 isd200_log_config(us, 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 usb_stor_dbg(us, " ISD200 Config Data was written successfully\n");
786 } else {
787 usb_stor_dbg(us, " Request to write ISD200 Config Data failed!\n");
788 retStatus = ISD200_ERROR;
789 }
790
791 usb_stor_dbg(us, "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 usb_stor_dbg(us, "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 usb_stor_dbg(us, " Retrieved the following ISD200 Config Data:\n");
828#ifdef CONFIG_USB_STORAGE_DEBUG
829 isd200_log_config(us, info);
830#endif
831 } else {
832 usb_stor_dbg(us, " Request to get ISD200 Config Data failed!\n");
833 retStatus = ISD200_ERROR;
834 }
835
836 usb_stor_dbg(us, "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 usb_stor_dbg(us, "Entering isd200_atapi_soft_reset\n");
855
856 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
857 if (transferStatus != ISD200_TRANSPORT_GOOD) {
858 usb_stor_dbg(us, " Error issuing Atapi Soft Reset\n");
859 retStatus = ISD200_ERROR;
860 }
861
862 usb_stor_dbg(us, "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 usb_stor_dbg(us, "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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, "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
933 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
934 if ( status != ISD200_GOOD )
935 break;
936
937 status = isd200_action( us, ACTION_READ_STATUS,
938 regs, 8 );
939 if ( status != ISD200_GOOD )
940 break;
941
942 if (!detect) {
943 if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) {
944 usb_stor_dbg(us, " %s status is still BSY, try again...\n",
945 master_slave == ATA_ADDRESS_DEVHEAD_STD ?
946 "Master" : "Slave");
947 } else {
948 usb_stor_dbg(us, " %s status !BSY, continue with next operation\n",
949 master_slave == ATA_ADDRESS_DEVHEAD_STD ?
950 "Master" : "Slave");
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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " Identified ATAPI device as slave. Rechecking again as master\n");
985 recheckAsMaster = 1;
986 master_slave = ATA_ADDRESS_DEVHEAD_STD;
987 } else {
988 usb_stor_dbg(us, " Identified ATAPI device\n");
989 info->DeviceHead = master_slave;
990
991 status = isd200_atapi_soft_reset(us);
992 break;
993 }
994 } else {
995 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " BSY check timeout, just continue with next operation...\n");
1003 else
1004 usb_stor_dbg(us, " 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 usb_stor_dbg(us, "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 usb_stor_dbg(us, " Setting Master/Slave selection to %d\n",
1046 isslave);
1047 info->ConfigData.ATAConfig &= 0x3f;
1048 info->ConfigData.ATAConfig |= (isslave<<6);
1049 retStatus = isd200_write_config(us);
1050 }
1051 }
1052
1053 usb_stor_dbg(us, "Leaving isd200_manual_enum %08X\n", retStatus);
1054 return(retStatus);
1055}
1056
1057static void isd200_fix_driveid(u16 *id)
1058{
1059#ifndef __LITTLE_ENDIAN
1060# ifdef __BIG_ENDIAN
1061 int i;
1062
1063 for (i = 0; i < ATA_ID_WORDS; i++)
1064 id[i] = __le16_to_cpu(id[i]);
1065# else
1066# error "Please fix <asm/byteorder.h>"
1067# endif
1068#endif
1069}
1070
1071static void isd200_dump_driveid(struct us_data *us, u16 *id)
1072{
1073 usb_stor_dbg(us, " Identify Data Structure:\n");
1074 usb_stor_dbg(us, " config = 0x%x\n", id[ATA_ID_CONFIG]);
1075 usb_stor_dbg(us, " cyls = 0x%x\n", id[ATA_ID_CYLS]);
1076 usb_stor_dbg(us, " heads = 0x%x\n", id[ATA_ID_HEADS]);
1077 usb_stor_dbg(us, " track_bytes = 0x%x\n", id[4]);
1078 usb_stor_dbg(us, " sector_bytes = 0x%x\n", id[5]);
1079 usb_stor_dbg(us, " sectors = 0x%x\n", id[ATA_ID_SECTORS]);
1080 usb_stor_dbg(us, " serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]);
1081 usb_stor_dbg(us, " buf_type = 0x%x\n", id[20]);
1082 usb_stor_dbg(us, " buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]);
1083 usb_stor_dbg(us, " ecc_bytes = 0x%x\n", id[22]);
1084 usb_stor_dbg(us, " fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]);
1085 usb_stor_dbg(us, " model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]);
1086 usb_stor_dbg(us, " max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff);
1087 usb_stor_dbg(us, " dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]);
1088 usb_stor_dbg(us, " capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8);
1089 usb_stor_dbg(us, " tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8);
1090 usb_stor_dbg(us, " tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8);
1091 usb_stor_dbg(us, " field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]);
1092 usb_stor_dbg(us, " cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]);
1093 usb_stor_dbg(us, " cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]);
1094 usb_stor_dbg(us, " cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]);
1095 usb_stor_dbg(us, " cur_capacity = 0x%x\n", ata_id_u32(id, 57));
1096 usb_stor_dbg(us, " multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff);
1097 usb_stor_dbg(us, " lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY));
1098 usb_stor_dbg(us, " command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]);
1099 usb_stor_dbg(us, " command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]);
1100}
1101
1102/**************************************************************************
1103 * isd200_get_inquiry_data
1104 *
1105 * Get inquiry data
1106 *
1107 * RETURNS:
1108 * ISD status code
1109 */
1110static int isd200_get_inquiry_data( struct us_data *us )
1111{
1112 struct isd200_info *info = (struct isd200_info *)us->extra;
1113 int retStatus = ISD200_GOOD;
1114 u16 *id = info->id;
1115
1116 usb_stor_dbg(us, "Entering isd200_get_inquiry_data\n");
1117
1118 /* set default to Master */
1119 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1120
1121 /* attempt to manually enumerate this device */
1122 retStatus = isd200_manual_enum(us);
1123 if (retStatus == ISD200_GOOD) {
1124 int transferStatus;
1125
1126 /* check for an ATA device */
1127 if (info->DeviceFlags & DF_ATA_DEVICE) {
1128 /* this must be an ATA device */
1129 /* perform an ATA Command Identify */
1130 transferStatus = isd200_action( us, ACTION_IDENTIFY,
1131 id, ATA_ID_WORDS * 2);
1132 if (transferStatus != ISD200_TRANSPORT_GOOD) {
1133 /* Error issuing ATA Command Identify */
1134 usb_stor_dbg(us, " Error issuing ATA Command Identify\n");
1135 retStatus = ISD200_ERROR;
1136 } else {
1137 /* ATA Command Identify successful */
1138 int i;
1139 __be16 *src;
1140 __u16 *dest;
1141
1142 isd200_fix_driveid(id);
1143 isd200_dump_driveid(us, id);
1144
1145 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1146
1147 /* Standard IDE interface only supports disks */
1148 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1149
1150 /* The length must be at least 36 (5 + 31) */
1151 info->InquiryData.AdditionalLength = 0x1F;
1152
1153 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) {
1154 /* set the removable bit */
1155 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1156 info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1157 }
1158
1159 /* Fill in vendor identification fields */
1160 src = (__be16 *)&id[ATA_ID_PROD];
1161 dest = (__u16*)info->InquiryData.VendorId;
1162 for (i=0;i<4;i++)
1163 dest[i] = be16_to_cpu(src[i]);
1164
1165 src = (__be16 *)&id[ATA_ID_PROD + 8/2];
1166 dest = (__u16*)info->InquiryData.ProductId;
1167 for (i=0;i<8;i++)
1168 dest[i] = be16_to_cpu(src[i]);
1169
1170 src = (__be16 *)&id[ATA_ID_FW_REV];
1171 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1172 for (i=0;i<2;i++)
1173 dest[i] = be16_to_cpu(src[i]);
1174
1175 /* determine if it supports Media Status Notification */
1176 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) {
1177 usb_stor_dbg(us, " Device supports Media Status Notification\n");
1178
1179 /* Indicate that it is enabled, even though it is not
1180 * This allows the lock/unlock of the media to work
1181 * correctly.
1182 */
1183 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1184 }
1185 else
1186 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1187
1188 }
1189 } else {
1190 /*
1191 * this must be an ATAPI device
1192 * use an ATAPI protocol (Transparent SCSI)
1193 */
1194 us->protocol_name = "Transparent SCSI";
1195 us->proto_handler = usb_stor_transparent_scsi_command;
1196
1197 usb_stor_dbg(us, "Protocol changed to: %s\n",
1198 us->protocol_name);
1199
1200 /* Free driver structure */
1201 us->extra_destructor(info);
1202 kfree(info);
1203 us->extra = NULL;
1204 us->extra_destructor = NULL;
1205 }
1206 }
1207
1208 usb_stor_dbg(us, "Leaving isd200_get_inquiry_data %08X\n", retStatus);
1209
1210 return(retStatus);
1211}
1212
1213/**************************************************************************
1214 * isd200_scsi_to_ata
1215 *
1216 * Translate SCSI commands to ATA commands.
1217 *
1218 * RETURNS:
1219 * 1 if the command needs to be sent to the transport layer
1220 * 0 otherwise
1221 */
1222static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1223 union ata_cdb * ataCdb)
1224{
1225 struct isd200_info *info = (struct isd200_info *)us->extra;
1226 u16 *id = info->id;
1227 int sendToTransport = 1;
1228 unsigned char sectnum, head;
1229 unsigned short cylinder;
1230 unsigned long lba;
1231 unsigned long blockCount;
1232 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1233
1234 memset(ataCdb, 0, sizeof(union ata_cdb));
1235
1236 /* SCSI Command */
1237 switch (srb->cmnd[0]) {
1238 case INQUIRY:
1239 usb_stor_dbg(us, " ATA OUT - INQUIRY\n");
1240
1241 /* copy InquiryData */
1242 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1243 sizeof(info->InquiryData), srb);
1244 srb->result = SAM_STAT_GOOD;
1245 sendToTransport = 0;
1246 break;
1247
1248 case MODE_SENSE:
1249 usb_stor_dbg(us, " ATA OUT - SCSIOP_MODE_SENSE\n");
1250
1251 /* Initialize the return buffer */
1252 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1253
1254 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1255 {
1256 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1257 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1258 ataCdb->generic.TransferBlockSize = 1;
1259 ataCdb->generic.RegisterSelect = REG_COMMAND;
1260 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1261 isd200_srb_set_bufflen(srb, 0);
1262 } else {
1263 usb_stor_dbg(us, " Media Status not supported, just report okay\n");
1264 srb->result = SAM_STAT_GOOD;
1265 sendToTransport = 0;
1266 }
1267 break;
1268
1269 case TEST_UNIT_READY:
1270 usb_stor_dbg(us, " ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1271
1272 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1273 {
1274 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1275 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1276 ataCdb->generic.TransferBlockSize = 1;
1277 ataCdb->generic.RegisterSelect = REG_COMMAND;
1278 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1279 isd200_srb_set_bufflen(srb, 0);
1280 } else {
1281 usb_stor_dbg(us, " Media Status not supported, just report okay\n");
1282 srb->result = SAM_STAT_GOOD;
1283 sendToTransport = 0;
1284 }
1285 break;
1286
1287 case READ_CAPACITY:
1288 {
1289 unsigned long capacity;
1290 struct read_capacity_data readCapacityData;
1291
1292 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ_CAPACITY\n");
1293
1294 if (ata_id_has_lba(id))
1295 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1;
1296 else
1297 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] *
1298 id[ATA_ID_SECTORS]) - 1;
1299
1300 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1301 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1302
1303 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1304 sizeof(readCapacityData), srb);
1305 srb->result = SAM_STAT_GOOD;
1306 sendToTransport = 0;
1307 }
1308 break;
1309
1310 case READ_10:
1311 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ\n");
1312
1313 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1314 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1315
1316 if (ata_id_has_lba(id)) {
1317 sectnum = (unsigned char)(lba);
1318 cylinder = (unsigned short)(lba>>8);
1319 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1320 } else {
1321 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1322 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1323 id[ATA_ID_HEADS]));
1324 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1325 id[ATA_ID_HEADS]);
1326 }
1327 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1328 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1329 ataCdb->generic.TransferBlockSize = 1;
1330 ataCdb->generic.RegisterSelect =
1331 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1332 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1333 REG_DEVICE_HEAD | REG_COMMAND;
1334 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1335 ataCdb->write.SectorNumberByte = sectnum;
1336 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1337 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1338 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1339 ataCdb->write.CommandByte = ATA_CMD_PIO_READ;
1340 break;
1341
1342 case WRITE_10:
1343 usb_stor_dbg(us, " ATA OUT - SCSIOP_WRITE\n");
1344
1345 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1346 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1347
1348 if (ata_id_has_lba(id)) {
1349 sectnum = (unsigned char)(lba);
1350 cylinder = (unsigned short)(lba>>8);
1351 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1352 } else {
1353 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1354 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1355 id[ATA_ID_HEADS]));
1356 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1357 id[ATA_ID_HEADS]);
1358 }
1359 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1360 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1361 ataCdb->generic.TransferBlockSize = 1;
1362 ataCdb->generic.RegisterSelect =
1363 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1364 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1365 REG_DEVICE_HEAD | REG_COMMAND;
1366 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1367 ataCdb->write.SectorNumberByte = sectnum;
1368 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1369 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1370 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1371 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE;
1372 break;
1373
1374 case ALLOW_MEDIUM_REMOVAL:
1375 usb_stor_dbg(us, " ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1376
1377 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1378 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n",
1379 srb->cmnd[4]);
1380
1381 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1382 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1383 ataCdb->generic.TransferBlockSize = 1;
1384 ataCdb->generic.RegisterSelect = REG_COMMAND;
1385 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1386 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
1387 isd200_srb_set_bufflen(srb, 0);
1388 } else {
1389 usb_stor_dbg(us, " Not removeable media, just report okay\n");
1390 srb->result = SAM_STAT_GOOD;
1391 sendToTransport = 0;
1392 }
1393 break;
1394
1395 case START_STOP:
1396 usb_stor_dbg(us, " ATA OUT - SCSIOP_START_STOP_UNIT\n");
1397 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1398
1399 if ((srb->cmnd[4] & 0x3) == 0x2) {
1400 usb_stor_dbg(us, " Media Eject\n");
1401 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1402 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1403 ataCdb->generic.TransferBlockSize = 0;
1404 ataCdb->generic.RegisterSelect = REG_COMMAND;
1405 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1406 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1407 usb_stor_dbg(us, " Get Media Status\n");
1408 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1409 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1410 ataCdb->generic.TransferBlockSize = 1;
1411 ataCdb->generic.RegisterSelect = REG_COMMAND;
1412 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1413 isd200_srb_set_bufflen(srb, 0);
1414 } else {
1415 usb_stor_dbg(us, " Nothing to do, just report okay\n");
1416 srb->result = SAM_STAT_GOOD;
1417 sendToTransport = 0;
1418 }
1419 break;
1420
1421 default:
1422 usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n",
1423 srb->cmnd[0]);
1424 srb->result = DID_ERROR << 16;
1425 sendToTransport = 0;
1426 break;
1427 }
1428
1429 return(sendToTransport);
1430}
1431
1432
1433/**************************************************************************
1434 * isd200_free_info
1435 *
1436 * Frees the driver structure.
1437 */
1438static void isd200_free_info_ptrs(void *info_)
1439{
1440 struct isd200_info *info = (struct isd200_info *) info_;
1441
1442 if (info) {
1443 kfree(info->id);
1444 kfree(info->RegsBuf);
1445 kfree(info->srb.sense_buffer);
1446 }
1447}
1448
1449/**************************************************************************
1450 * isd200_init_info
1451 *
1452 * Allocates (if necessary) and initializes the driver structure.
1453 *
1454 * RETURNS:
1455 * ISD status code
1456 */
1457static int isd200_init_info(struct us_data *us)
1458{
1459 struct isd200_info *info;
1460
1461 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1462 if (!info)
1463 return ISD200_ERROR;
1464
1465 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
1466 info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1467 info->srb.sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1468
1469 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1470 isd200_free_info_ptrs(info);
1471 kfree(info);
1472 return ISD200_ERROR;
1473 }
1474
1475 us->extra = info;
1476 us->extra_destructor = isd200_free_info_ptrs;
1477
1478 return ISD200_GOOD;
1479}
1480
1481/**************************************************************************
1482 * Initialization for the ISD200
1483 */
1484
1485static int isd200_Initialization(struct us_data *us)
1486{
1487 usb_stor_dbg(us, "ISD200 Initialization...\n");
1488
1489 /* Initialize ISD200 info struct */
1490
1491 if (isd200_init_info(us) == ISD200_ERROR) {
1492 usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n");
1493 } else {
1494 /* Get device specific data */
1495
1496 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1497 usb_stor_dbg(us, "ISD200 Initialization Failure\n");
1498 else
1499 usb_stor_dbg(us, "ISD200 Initialization complete\n");
1500 }
1501
1502 return 0;
1503}
1504
1505
1506/**************************************************************************
1507 * Protocol and Transport for the ISD200 ASIC
1508 *
1509 * This protocol and transport are for ATA devices connected to an ISD200
1510 * ASIC. An ATAPI device that is connected as a slave device will be
1511 * detected in the driver initialization function and the protocol will
1512 * be changed to an ATAPI protocol (Transparent SCSI).
1513 *
1514 */
1515
1516static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1517{
1518 int sendToTransport = 1, orig_bufflen;
1519 union ata_cdb ataCdb;
1520
1521 /* Make sure driver was initialized */
1522
1523 if (us->extra == NULL)
1524 usb_stor_dbg(us, "ERROR Driver not initialized\n");
1525
1526 scsi_set_resid(srb, 0);
1527 /* scsi_bufflen might change in protocol translation to ata */
1528 orig_bufflen = scsi_bufflen(srb);
1529 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1530
1531 /* send the command to the transport layer */
1532 if (sendToTransport)
1533 isd200_invoke_transport(us, srb, &ataCdb);
1534
1535 isd200_srb_set_bufflen(srb, orig_bufflen);
1536}
1537
1538static struct scsi_host_template isd200_host_template;
1539
1540static int isd200_probe(struct usb_interface *intf,
1541 const struct usb_device_id *id)
1542{
1543 struct us_data *us;
1544 int result;
1545
1546 result = usb_stor_probe1(&us, intf, id,
1547 (id - isd200_usb_ids) + isd200_unusual_dev_list,
1548 &isd200_host_template);
1549 if (result)
1550 return result;
1551
1552 us->protocol_name = "ISD200 ATA/ATAPI";
1553 us->proto_handler = isd200_ata_command;
1554
1555 result = usb_stor_probe2(us);
1556 return result;
1557}
1558
1559static struct usb_driver isd200_driver = {
1560 .name = DRV_NAME,
1561 .probe = isd200_probe,
1562 .disconnect = usb_stor_disconnect,
1563 .suspend = usb_stor_suspend,
1564 .resume = usb_stor_resume,
1565 .reset_resume = usb_stor_reset_resume,
1566 .pre_reset = usb_stor_pre_reset,
1567 .post_reset = usb_stor_post_reset,
1568 .id_table = isd200_usb_ids,
1569 .soft_unbind = 1,
1570 .no_dynamic_id = 1,
1571};
1572
1573module_usb_stor_driver(isd200_driver, isd200_host_template, DRV_NAME);