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ia64/kvm: compilation fix. export account_system_vtime.
[pv_ops_mirror.git] / drivers / usb / storage / isd200.c
blob3addcd8f827bd3d17463dbc67395c072cfae4d81
1 /* Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
2 *
3 * $Id: isd200.c,v 1.16 2002/04/22 03:39:43 mdharm Exp $
4 *
5 * Current development and maintenance:
6 * (C) 2001-2002 Björn Stenberg (bjorn@haxx.se)
7 *
8 * Developed with the assistance of:
9 * (C) 2002 Alan Stern <stern@rowland.org>
10 *
11 * Initial work:
12 * (C) 2000 In-System Design, Inc. (support@in-system.com)
13 *
14 * The ISD200 ASIC does not natively support ATA devices. The chip
15 * does implement an interface, the ATA Command Block (ATACB) which provides
16 * a means of passing ATA commands and ATA register accesses to a device.
17 *
18 * This program is free software; you can redistribute it and/or modify it
19 * under the terms of the GNU General Public License as published by the
20 * Free Software Foundation; either version 2, or (at your option) any
21 * later version.
22 *
23 * This program is distributed in the hope that it will be useful, but
24 * WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License along
29 * with this program; if not, write to the Free Software Foundation, Inc.,
30 * 675 Mass Ave, Cambridge, MA 02139, USA.
31 *
32 * History:
33 *
34 * 2002-10-19: Removed the specialized transfer routines.
35 * (Alan Stern <stern@rowland.harvard.edu>)
36 * 2001-02-24: Removed lots of duplicate code and simplified the structure.
37 * (bjorn@haxx.se)
38 * 2002-01-16: Fixed endianness bug so it works on the ppc arch.
39 * (Luc Saillard <luc@saillard.org>)
40 * 2002-01-17: All bitfields removed.
41 * (bjorn@haxx.se)
42 */
43
44
45 /* Include files */
46
47 #include <linux/jiffies.h>
48 #include <linux/errno.h>
49 #include <linux/slab.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 #include "isd200.h"
63
64
65 /* Timeout defines (in Seconds) */
66
67 #define ISD200_ENUM_BSY_TIMEOUT 35
68 #define ISD200_ENUM_DETECT_TIMEOUT 30
69 #define ISD200_DEFAULT_TIMEOUT 30
70
71 /* device flags */
72 #define DF_ATA_DEVICE 0x0001
73 #define DF_MEDIA_STATUS_ENABLED 0x0002
74 #define DF_REMOVABLE_MEDIA 0x0004
75
76 /* capability bit definitions */
77 #define CAPABILITY_DMA 0x01
78 #define CAPABILITY_LBA 0x02
79
80 /* command_setX bit definitions */
81 #define COMMANDSET_REMOVABLE 0x02
82 #define COMMANDSET_MEDIA_STATUS 0x10
83
84 /* ATA Vendor Specific defines */
85 #define ATA_ADDRESS_DEVHEAD_STD 0xa0
86 #define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
87 #define ATA_ADDRESS_DEVHEAD_SLAVE 0x10
88
89 /* Action Select bits */
90 #define ACTION_SELECT_0 0x01
91 #define ACTION_SELECT_1 0x02
92 #define ACTION_SELECT_2 0x04
93 #define ACTION_SELECT_3 0x08
94 #define ACTION_SELECT_4 0x10
95 #define ACTION_SELECT_5 0x20
96 #define ACTION_SELECT_6 0x40
97 #define ACTION_SELECT_7 0x80
98
99 /* Register Select bits */
100 #define REG_ALTERNATE_STATUS 0x01
101 #define REG_DEVICE_CONTROL 0x01
102 #define REG_ERROR 0x02
103 #define REG_FEATURES 0x02
104 #define REG_SECTOR_COUNT 0x04
105 #define REG_SECTOR_NUMBER 0x08
106 #define REG_CYLINDER_LOW 0x10
107 #define REG_CYLINDER_HIGH 0x20
108 #define REG_DEVICE_HEAD 0x40
109 #define REG_STATUS 0x80
110 #define REG_COMMAND 0x80
111
112 /* ATA registers offset definitions */
113 #define ATA_REG_ERROR_OFFSET 1
114 #define ATA_REG_LCYL_OFFSET 4
115 #define ATA_REG_HCYL_OFFSET 5
116 #define ATA_REG_STATUS_OFFSET 7
117
118 /* ATA error definitions not in <linux/hdreg.h> */
119 #define ATA_ERROR_MEDIA_CHANGE 0x20
120
121 /* ATA command definitions not in <linux/hdreg.h> */
122 #define ATA_COMMAND_GET_MEDIA_STATUS 0xDA
123 #define ATA_COMMAND_MEDIA_EJECT 0xED
124
125 /* ATA drive control definitions */
126 #define ATA_DC_DISABLE_INTERRUPTS 0x02
127 #define ATA_DC_RESET_CONTROLLER 0x04
128 #define ATA_DC_REENABLE_CONTROLLER 0x00
129
130 /*
131 * General purpose return codes
132 */
133
134 #define ISD200_ERROR -1
135 #define ISD200_GOOD 0
136
137 /*
138 * Transport return codes
139 */
140
141 #define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */
142 #define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */
143 #define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
144
145 /* driver action codes */
146 #define ACTION_READ_STATUS 0
147 #define ACTION_RESET 1
148 #define ACTION_REENABLE 2
149 #define ACTION_SOFT_RESET 3
150 #define ACTION_ENUM 4
151 #define ACTION_IDENTIFY 5
152
153
154 /*
155 * ata_cdb struct
156 */
157
158
159 union ata_cdb {
160 struct {
161 unsigned char SignatureByte0;
162 unsigned char SignatureByte1;
163 unsigned char ActionSelect;
164 unsigned char RegisterSelect;
165 unsigned char TransferBlockSize;
166 unsigned char WriteData3F6;
167 unsigned char WriteData1F1;
168 unsigned char WriteData1F2;
169 unsigned char WriteData1F3;
170 unsigned char WriteData1F4;
171 unsigned char WriteData1F5;
172 unsigned char WriteData1F6;
173 unsigned char WriteData1F7;
174 unsigned char Reserved[3];
175 } generic;
176
177 struct {
178 unsigned char SignatureByte0;
179 unsigned char SignatureByte1;
180 unsigned char ActionSelect;
181 unsigned char RegisterSelect;
182 unsigned char TransferBlockSize;
183 unsigned char AlternateStatusByte;
184 unsigned char ErrorByte;
185 unsigned char SectorCountByte;
186 unsigned char SectorNumberByte;
187 unsigned char CylinderLowByte;
188 unsigned char CylinderHighByte;
189 unsigned char DeviceHeadByte;
190 unsigned char StatusByte;
191 unsigned char Reserved[3];
192 } read;
193
194 struct {
195 unsigned char SignatureByte0;
196 unsigned char SignatureByte1;
197 unsigned char ActionSelect;
198 unsigned char RegisterSelect;
199 unsigned char TransferBlockSize;
200 unsigned char DeviceControlByte;
201 unsigned char FeaturesByte;
202 unsigned char SectorCountByte;
203 unsigned char SectorNumberByte;
204 unsigned char CylinderLowByte;
205 unsigned char CylinderHighByte;
206 unsigned char DeviceHeadByte;
207 unsigned char CommandByte;
208 unsigned char Reserved[3];
209 } write;
210 };
211
212
213 /*
214 * Inquiry data structure. This is the data returned from the target
215 * after it receives an inquiry.
216 *
217 * This structure may be extended by the number of bytes specified
218 * in the field AdditionalLength. The defined size constant only
219 * includes fields through ProductRevisionLevel.
220 */
221
222 /*
223 * DeviceType field
224 */
225 #define DIRECT_ACCESS_DEVICE 0x00 /* disks */
226 #define DEVICE_REMOVABLE 0x80
227
228 struct inquiry_data {
229 unsigned char DeviceType;
230 unsigned char DeviceTypeModifier;
231 unsigned char Versions;
232 unsigned char Format;
233 unsigned char AdditionalLength;
234 unsigned char Reserved[2];
235 unsigned char Capability;
236 unsigned char VendorId[8];
237 unsigned char ProductId[16];
238 unsigned char ProductRevisionLevel[4];
239 unsigned char VendorSpecific[20];
240 unsigned char Reserved3[40];
241 } __attribute__ ((packed));
242
243 /*
244 * INQUIRY data buffer size
245 */
246
247 #define INQUIRYDATABUFFERSIZE 36
248
249
250 /*
251 * ISD200 CONFIG data struct
252 */
253
254 #define ATACFG_TIMING 0x0f
255 #define ATACFG_ATAPI_RESET 0x10
256 #define ATACFG_MASTER 0x20
257 #define ATACFG_BLOCKSIZE 0xa0
258
259 #define ATACFGE_LAST_LUN 0x07
260 #define ATACFGE_DESC_OVERRIDE 0x08
261 #define ATACFGE_STATE_SUSPEND 0x10
262 #define ATACFGE_SKIP_BOOT 0x20
263 #define ATACFGE_CONF_DESC2 0x40
264 #define ATACFGE_INIT_STATUS 0x80
265
266 #define CFG_CAPABILITY_SRST 0x01
267
268 struct isd200_config {
269 unsigned char EventNotification;
270 unsigned char ExternalClock;
271 unsigned char ATAInitTimeout;
272 unsigned char ATAConfig;
273 unsigned char ATAMajorCommand;
274 unsigned char ATAMinorCommand;
275 unsigned char ATAExtraConfig;
276 unsigned char Capability;
277 }__attribute__ ((packed));
278
279
280 /*
281 * ISD200 driver information struct
282 */
283
284 struct isd200_info {
285 struct inquiry_data InquiryData;
286 struct hd_driveid *id;
287 struct isd200_config ConfigData;
288 unsigned char *RegsBuf;
289 unsigned char ATARegs[8];
290 unsigned char DeviceHead;
291 unsigned char DeviceFlags;
292
293 /* maximum number of LUNs supported */
294 unsigned char MaxLUNs;
295 unsigned char cmnd[BLK_MAX_CDB];
296 struct scsi_cmnd srb;
297 struct scatterlist sg;
298 };
299
300
301 /*
302 * Read Capacity Data - returned in Big Endian format
303 */
304
305 struct read_capacity_data {
306 __be32 LogicalBlockAddress;
307 __be32 BytesPerBlock;
308 };
309
310 /*
311 * Read Block Limits Data - returned in Big Endian format
312 * This structure returns the maximum and minimum block
313 * size for a TAPE device.
314 */
315
316 struct read_block_limits {
317 unsigned char Reserved;
318 unsigned char BlockMaximumSize[3];
319 unsigned char BlockMinimumSize[2];
320 };
321
322
323 /*
324 * Sense Data Format
325 */
326
327 #define SENSE_ERRCODE 0x7f
328 #define SENSE_ERRCODE_VALID 0x80
329 #define SENSE_FLAG_SENSE_KEY 0x0f
330 #define SENSE_FLAG_BAD_LENGTH 0x20
331 #define SENSE_FLAG_END_OF_MEDIA 0x40
332 #define SENSE_FLAG_FILE_MARK 0x80
333 struct sense_data {
334 unsigned char ErrorCode;
335 unsigned char SegmentNumber;
336 unsigned char Flags;
337 unsigned char Information[4];
338 unsigned char AdditionalSenseLength;
339 unsigned char CommandSpecificInformation[4];
340 unsigned char AdditionalSenseCode;
341 unsigned char AdditionalSenseCodeQualifier;
342 unsigned char FieldReplaceableUnitCode;
343 unsigned char SenseKeySpecific[3];
344 } __attribute__ ((packed));
345
346 /*
347 * Default request sense buffer size
348 */
349
350 #define SENSE_BUFFER_SIZE 18
351
352 /***********************************************************************
353 * Helper routines
354 ***********************************************************************/
355
356 /**************************************************************************
357 * isd200_build_sense
358 *
359 * Builds an artificial sense buffer to report the results of a
360 * failed command.
361 *
362 * RETURNS:
363 * void
364 */
365 static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
366 {
367 struct isd200_info *info = (struct isd200_info *)us->extra;
368 struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
369 unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET];
370
371 if(error & ATA_ERROR_MEDIA_CHANGE) {
372 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
373 buf->AdditionalSenseLength = 0xb;
374 buf->Flags = UNIT_ATTENTION;
375 buf->AdditionalSenseCode = 0;
376 buf->AdditionalSenseCodeQualifier = 0;
377 } else if(error & MCR_ERR) {
378 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
379 buf->AdditionalSenseLength = 0xb;
380 buf->Flags = UNIT_ATTENTION;
381 buf->AdditionalSenseCode = 0;
382 buf->AdditionalSenseCodeQualifier = 0;
383 } else if(error & TRK0_ERR) {
384 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
385 buf->AdditionalSenseLength = 0xb;
386 buf->Flags = NOT_READY;
387 buf->AdditionalSenseCode = 0;
388 buf->AdditionalSenseCodeQualifier = 0;
389 } else if(error & ECC_ERR) {
390 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
391 buf->AdditionalSenseLength = 0xb;
392 buf->Flags = DATA_PROTECT;
393 buf->AdditionalSenseCode = 0;
394 buf->AdditionalSenseCodeQualifier = 0;
395 } else {
396 buf->ErrorCode = 0;
397 buf->AdditionalSenseLength = 0;
398 buf->Flags = 0;
399 buf->AdditionalSenseCode = 0;
400 buf->AdditionalSenseCodeQualifier = 0;
401 }
402 }
403
404
405 /***********************************************************************
406 * Transport routines
407 ***********************************************************************/
408
409 /**************************************************************************
410 * isd200_set_srb(), isd200_srb_set_bufflen()
411 *
412 * Two helpers to facilitate in initialization of scsi_cmnd structure
413 * Will need to change when struct scsi_cmnd changes
414 */
415 static void isd200_set_srb(struct isd200_info *info,
416 enum dma_data_direction dir, void* buff, unsigned bufflen)
417 {
418 struct scsi_cmnd *srb = &info->srb;
419
420 if (buff)
421 sg_init_one(&info->sg, buff, bufflen);
422
423 srb->sc_data_direction = dir;
424 srb->sdb.table.sgl = buff ? &info->sg : NULL;
425 srb->sdb.length = bufflen;
426 srb->sdb.table.nents = buff ? 1 : 0;
427 }
428
429 static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen)
430 {
431 srb->sdb.length = bufflen;
432 }
433
434
435 /**************************************************************************
436 * isd200_action
437 *
438 * Routine for sending commands to the isd200
439 *
440 * RETURNS:
441 * ISD status code
442 */
443 static int isd200_action( struct us_data *us, int action,
444 void* pointer, int value )
445 {
446 union ata_cdb ata;
447 struct scsi_device srb_dev;
448 struct isd200_info *info = (struct isd200_info *)us->extra;
449 struct scsi_cmnd *srb = &info->srb;
450 int status;
451
452 memset(&ata, 0, sizeof(ata));
453 memset(&srb_dev, 0, sizeof(srb_dev));
454 srb->cmnd = info->cmnd;
455 srb->device = &srb_dev;
456 ++srb->serial_number;
457
458 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
459 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
460 ata.generic.TransferBlockSize = 1;
461
462 switch ( action ) {
463 case ACTION_READ_STATUS:
464 US_DEBUGP(" isd200_action(READ_STATUS)\n");
465 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
466 ata.generic.RegisterSelect =
467 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
468 REG_STATUS | REG_ERROR;
469 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
470 break;
471
472 case ACTION_ENUM:
473 US_DEBUGP(" isd200_action(ENUM,0x%02x)\n",value);
474 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
475 ACTION_SELECT_3|ACTION_SELECT_4|
476 ACTION_SELECT_5;
477 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
478 ata.write.DeviceHeadByte = value;
479 isd200_set_srb(info, DMA_NONE, NULL, 0);
480 break;
481
482 case ACTION_RESET:
483 US_DEBUGP(" isd200_action(RESET)\n");
484 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
485 ACTION_SELECT_3|ACTION_SELECT_4;
486 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
487 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
488 isd200_set_srb(info, DMA_NONE, NULL, 0);
489 break;
490
491 case ACTION_REENABLE:
492 US_DEBUGP(" isd200_action(REENABLE)\n");
493 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
494 ACTION_SELECT_3|ACTION_SELECT_4;
495 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
496 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
497 isd200_set_srb(info, DMA_NONE, NULL, 0);
498 break;
499
500 case ACTION_SOFT_RESET:
501 US_DEBUGP(" isd200_action(SOFT_RESET)\n");
502 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
503 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
504 ata.write.DeviceHeadByte = info->DeviceHead;
505 ata.write.CommandByte = WIN_SRST;
506 isd200_set_srb(info, DMA_NONE, NULL, 0);
507 break;
508
509 case ACTION_IDENTIFY:
510 US_DEBUGP(" isd200_action(IDENTIFY)\n");
511 ata.generic.RegisterSelect = REG_COMMAND;
512 ata.write.CommandByte = WIN_IDENTIFY;
513 isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
514 sizeof(struct hd_driveid));
515 break;
516
517 default:
518 US_DEBUGP("Error: Undefined action %d\n",action);
519 return ISD200_ERROR;
520 }
521
522 memcpy(srb->cmnd, &ata, sizeof(ata.generic));
523 srb->cmd_len = sizeof(ata.generic);
524 status = usb_stor_Bulk_transport(srb, us);
525 if (status == USB_STOR_TRANSPORT_GOOD)
526 status = ISD200_GOOD;
527 else {
528 US_DEBUGP(" isd200_action(0x%02x) error: %d\n",action,status);
529 status = ISD200_ERROR;
530 /* need to reset device here */
531 }
532
533 return status;
534 }
535
536 /**************************************************************************
537 * isd200_read_regs
538 *
539 * Read ATA Registers
540 *
541 * RETURNS:
542 * ISD status code
543 */
544 static int isd200_read_regs( struct us_data *us )
545 {
546 struct isd200_info *info = (struct isd200_info *)us->extra;
547 int retStatus = ISD200_GOOD;
548 int transferStatus;
549
550 US_DEBUGP("Entering isd200_IssueATAReadRegs\n");
551
552 transferStatus = isd200_action( us, ACTION_READ_STATUS,
553 info->RegsBuf, sizeof(info->ATARegs) );
554 if (transferStatus != ISD200_TRANSPORT_GOOD) {
555 US_DEBUGP(" Error reading ATA registers\n");
556 retStatus = ISD200_ERROR;
557 } else {
558 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
559 US_DEBUGP(" Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n",
560 info->ATARegs[ATA_REG_ERROR_OFFSET]);
561 }
562
563 return retStatus;
564 }
565
566
567 /**************************************************************************
568 * Invoke the transport and basic error-handling/recovery methods
569 *
570 * This is used by the protocol layers to actually send the message to
571 * the device and receive the response.
572 */
573 static void isd200_invoke_transport( struct us_data *us,
574 struct scsi_cmnd *srb,
575 union ata_cdb *ataCdb )
576 {
577 int need_auto_sense = 0;
578 int transferStatus;
579 int result;
580
581 /* send the command to the transport layer */
582 memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
583 srb->cmd_len = sizeof(ataCdb->generic);
584 transferStatus = usb_stor_Bulk_transport(srb, us);
585
586 /* if the command gets aborted by the higher layers, we need to
587 * short-circuit all other processing
588 */
589 if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) {
590 US_DEBUGP("-- command was aborted\n");
591 goto Handle_Abort;
592 }
593
594 switch (transferStatus) {
595
596 case USB_STOR_TRANSPORT_GOOD:
597 /* Indicate a good result */
598 srb->result = SAM_STAT_GOOD;
599 break;
600
601 case USB_STOR_TRANSPORT_NO_SENSE:
602 US_DEBUGP("-- transport indicates protocol failure\n");
603 srb->result = SAM_STAT_CHECK_CONDITION;
604 return;
605
606 case USB_STOR_TRANSPORT_FAILED:
607 US_DEBUGP("-- transport indicates command failure\n");
608 need_auto_sense = 1;
609 break;
610
611 case USB_STOR_TRANSPORT_ERROR:
612 US_DEBUGP("-- transport indicates transport error\n");
613 srb->result = DID_ERROR << 16;
614 /* Need reset here */
615 return;
616
617 default:
618 US_DEBUGP("-- transport indicates unknown error\n");
619 srb->result = DID_ERROR << 16;
620 /* Need reset here */
621 return;
622 }
623
624 if ((scsi_get_resid(srb) > 0) &&
625 !((srb->cmnd[0] == REQUEST_SENSE) ||
626 (srb->cmnd[0] == INQUIRY) ||
627 (srb->cmnd[0] == MODE_SENSE) ||
628 (srb->cmnd[0] == LOG_SENSE) ||
629 (srb->cmnd[0] == MODE_SENSE_10))) {
630 US_DEBUGP("-- unexpectedly short transfer\n");
631 need_auto_sense = 1;
632 }
633
634 if (need_auto_sense) {
635 result = isd200_read_regs(us);
636 if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) {
637 US_DEBUGP("-- auto-sense aborted\n");
638 goto Handle_Abort;
639 }
640 if (result == ISD200_GOOD) {
641 isd200_build_sense(us, srb);
642 srb->result = SAM_STAT_CHECK_CONDITION;
643
644 /* If things are really okay, then let's show that */
645 if ((srb->sense_buffer[2] & 0xf) == 0x0)
646 srb->result = SAM_STAT_GOOD;
647 } else {
648 srb->result = DID_ERROR << 16;
649 /* Need reset here */
650 }
651 }
652
653 /* Regardless of auto-sense, if we _know_ we have an error
654 * condition, show that in the result code
655 */
656 if (transferStatus == USB_STOR_TRANSPORT_FAILED)
657 srb->result = SAM_STAT_CHECK_CONDITION;
658 return;
659
660 /* abort processing: the bulk-only transport requires a reset
661 * following an abort */
662 Handle_Abort:
663 srb->result = DID_ABORT << 16;
664
665 /* permit the reset transfer to take place */
666 clear_bit(US_FLIDX_ABORTING, &us->flags);
667 /* Need reset here */
668 }
669
670 #ifdef CONFIG_USB_STORAGE_DEBUG
671 static void isd200_log_config( struct isd200_info* info )
672 {
673 US_DEBUGP(" Event Notification: 0x%x\n",
674 info->ConfigData.EventNotification);
675 US_DEBUGP(" External Clock: 0x%x\n",
676 info->ConfigData.ExternalClock);
677 US_DEBUGP(" ATA Init Timeout: 0x%x\n",
678 info->ConfigData.ATAInitTimeout);
679 US_DEBUGP(" ATAPI Command Block Size: 0x%x\n",
680 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
681 US_DEBUGP(" Master/Slave Selection: 0x%x\n",
682 info->ConfigData.ATAConfig & ATACFG_MASTER);
683 US_DEBUGP(" ATAPI Reset: 0x%x\n",
684 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
685 US_DEBUGP(" ATA Timing: 0x%x\n",
686 info->ConfigData.ATAConfig & ATACFG_TIMING);
687 US_DEBUGP(" ATA Major Command: 0x%x\n",
688 info->ConfigData.ATAMajorCommand);
689 US_DEBUGP(" ATA Minor Command: 0x%x\n",
690 info->ConfigData.ATAMinorCommand);
691 US_DEBUGP(" Init Status: 0x%x\n",
692 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
693 US_DEBUGP(" Config Descriptor 2: 0x%x\n",
694 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
695 US_DEBUGP(" Skip Device Boot: 0x%x\n",
696 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
697 US_DEBUGP(" ATA 3 State Supsend: 0x%x\n",
698 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
699 US_DEBUGP(" Descriptor Override: 0x%x\n",
700 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
701 US_DEBUGP(" Last LUN Identifier: 0x%x\n",
702 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
703 US_DEBUGP(" SRST Enable: 0x%x\n",
704 info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
705 }
706 #endif
707
708 /**************************************************************************
709 * isd200_write_config
710 *
711 * Write the ISD200 Configuration data
712 *
713 * RETURNS:
714 * ISD status code
715 */
716 static int isd200_write_config( struct us_data *us )
717 {
718 struct isd200_info *info = (struct isd200_info *)us->extra;
719 int retStatus = ISD200_GOOD;
720 int result;
721
722 #ifdef CONFIG_USB_STORAGE_DEBUG
723 US_DEBUGP("Entering isd200_write_config\n");
724 US_DEBUGP(" Writing the following ISD200 Config Data:\n");
725 isd200_log_config(info);
726 #endif
727
728 /* let's send the command via the control pipe */
729 result = usb_stor_ctrl_transfer(
730 us,
731 us->send_ctrl_pipe,
732 0x01,
733 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
734 0x0000,
735 0x0002,
736 (void *) &info->ConfigData,
737 sizeof(info->ConfigData));
738
739 if (result >= 0) {
740 US_DEBUGP(" ISD200 Config Data was written successfully\n");
741 } else {
742 US_DEBUGP(" Request to write ISD200 Config Data failed!\n");
743 retStatus = ISD200_ERROR;
744 }
745
746 US_DEBUGP("Leaving isd200_write_config %08X\n", retStatus);
747 return retStatus;
748 }
749
750
751 /**************************************************************************
752 * isd200_read_config
753 *
754 * Reads the ISD200 Configuration data
755 *
756 * RETURNS:
757 * ISD status code
758 */
759 static int isd200_read_config( struct us_data *us )
760 {
761 struct isd200_info *info = (struct isd200_info *)us->extra;
762 int retStatus = ISD200_GOOD;
763 int result;
764
765 US_DEBUGP("Entering isd200_read_config\n");
766
767 /* read the configuration information from ISD200. Use this to */
768 /* determine what the special ATA CDB bytes are. */
769
770 result = usb_stor_ctrl_transfer(
771 us,
772 us->recv_ctrl_pipe,
773 0x02,
774 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
775 0x0000,
776 0x0002,
777 (void *) &info->ConfigData,
778 sizeof(info->ConfigData));
779
780
781 if (result >= 0) {
782 US_DEBUGP(" Retrieved the following ISD200 Config Data:\n");
783 #ifdef CONFIG_USB_STORAGE_DEBUG
784 isd200_log_config(info);
785 #endif
786 } else {
787 US_DEBUGP(" Request to get ISD200 Config Data failed!\n");
788 retStatus = ISD200_ERROR;
789 }
790
791 US_DEBUGP("Leaving isd200_read_config %08X\n", retStatus);
792 return retStatus;
793 }
794
795
796 /**************************************************************************
797 * isd200_atapi_soft_reset
798 *
799 * Perform an Atapi Soft Reset on the device
800 *
801 * RETURNS:
802 * NT status code
803 */
804 static int isd200_atapi_soft_reset( struct us_data *us )
805 {
806 int retStatus = ISD200_GOOD;
807 int transferStatus;
808
809 US_DEBUGP("Entering isd200_atapi_soft_reset\n");
810
811 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
812 if (transferStatus != ISD200_TRANSPORT_GOOD) {
813 US_DEBUGP(" Error issuing Atapi Soft Reset\n");
814 retStatus = ISD200_ERROR;
815 }
816
817 US_DEBUGP("Leaving isd200_atapi_soft_reset %08X\n", retStatus);
818 return retStatus;
819 }
820
821
822 /**************************************************************************
823 * isd200_srst
824 *
825 * Perform an SRST on the device
826 *
827 * RETURNS:
828 * ISD status code
829 */
830 static int isd200_srst( struct us_data *us )
831 {
832 int retStatus = ISD200_GOOD;
833 int transferStatus;
834
835 US_DEBUGP("Entering isd200_SRST\n");
836
837 transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
838
839 /* check to see if this request failed */
840 if (transferStatus != ISD200_TRANSPORT_GOOD) {
841 US_DEBUGP(" Error issuing SRST\n");
842 retStatus = ISD200_ERROR;
843 } else {
844 /* delay 10ms to give the drive a chance to see it */
845 msleep(10);
846
847 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
848 if (transferStatus != ISD200_TRANSPORT_GOOD) {
849 US_DEBUGP(" Error taking drive out of reset\n");
850 retStatus = ISD200_ERROR;
851 } else {
852 /* delay 50ms to give the drive a chance to recover after SRST */
853 msleep(50);
854 }
855 }
856
857 US_DEBUGP("Leaving isd200_srst %08X\n", retStatus);
858 return retStatus;
859 }
860
861
862 /**************************************************************************
863 * isd200_try_enum
864 *
865 * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
866 * and tries to analyze the status registers
867 *
868 * RETURNS:
869 * ISD status code
870 */
871 static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
872 int detect )
873 {
874 int status = ISD200_GOOD;
875 unsigned long endTime;
876 struct isd200_info *info = (struct isd200_info *)us->extra;
877 unsigned char *regs = info->RegsBuf;
878 int recheckAsMaster = 0;
879
880 if ( detect )
881 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
882 else
883 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
884
885 /* loop until we detect !BSY or timeout */
886 while(1) {
887 #ifdef CONFIG_USB_STORAGE_DEBUG
888 char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ?
889 "Master" : "Slave";
890 #endif
891
892 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
893 if ( status != ISD200_GOOD )
894 break;
895
896 status = isd200_action( us, ACTION_READ_STATUS,
897 regs, 8 );
898 if ( status != ISD200_GOOD )
899 break;
900
901 if (!detect) {
902 if (regs[ATA_REG_STATUS_OFFSET] & BUSY_STAT) {
903 US_DEBUGP(" %s status is still BSY, try again...\n",mstr);
904 } else {
905 US_DEBUGP(" %s status !BSY, continue with next operation\n",mstr);
906 break;
907 }
908 }
909 /* check for BUSY_STAT and */
910 /* WRERR_STAT (workaround ATA Zip drive) and */
911 /* ERR_STAT (workaround for Archos CD-ROM) */
912 else if (regs[ATA_REG_STATUS_OFFSET] &
913 (BUSY_STAT | WRERR_STAT | ERR_STAT )) {
914 US_DEBUGP(" Status indicates it is not ready, try again...\n");
915 }
916 /* check for DRDY, ATA devices set DRDY after SRST */
917 else if (regs[ATA_REG_STATUS_OFFSET] & READY_STAT) {
918 US_DEBUGP(" Identified ATA device\n");
919 info->DeviceFlags |= DF_ATA_DEVICE;
920 info->DeviceHead = master_slave;
921 break;
922 }
923 /* check Cylinder High/Low to
924 determine if it is an ATAPI device
925 */
926 else if (regs[ATA_REG_HCYL_OFFSET] == 0xEB &&
927 regs[ATA_REG_LCYL_OFFSET] == 0x14) {
928 /* It seems that the RICOH
929 MP6200A CD/RW drive will
930 report itself okay as a
931 slave when it is really a
932 master. So this check again
933 as a master device just to
934 make sure it doesn't report
935 itself okay as a master also
936 */
937 if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
938 !recheckAsMaster) {
939 US_DEBUGP(" Identified ATAPI device as slave. Rechecking again as master\n");
940 recheckAsMaster = 1;
941 master_slave = ATA_ADDRESS_DEVHEAD_STD;
942 } else {
943 US_DEBUGP(" Identified ATAPI device\n");
944 info->DeviceHead = master_slave;
945
946 status = isd200_atapi_soft_reset(us);
947 break;
948 }
949 } else {
950 US_DEBUGP(" Not ATA, not ATAPI. Weird.\n");
951 break;
952 }
953
954 /* check for timeout on this request */
955 if (time_after_eq(jiffies, endTime)) {
956 if (!detect)
957 US_DEBUGP(" BSY check timeout, just continue with next operation...\n");
958 else
959 US_DEBUGP(" Device detect timeout!\n");
960 break;
961 }
962 }
963
964 return status;
965 }
966
967 /**************************************************************************
968 * isd200_manual_enum
969 *
970 * Determines if the drive attached is an ATA or ATAPI and if it is a
971 * master or slave.
972 *
973 * RETURNS:
974 * ISD status code
975 */
976 static int isd200_manual_enum(struct us_data *us)
977 {
978 struct isd200_info *info = (struct isd200_info *)us->extra;
979 int retStatus = ISD200_GOOD;
980
981 US_DEBUGP("Entering isd200_manual_enum\n");
982
983 retStatus = isd200_read_config(us);
984 if (retStatus == ISD200_GOOD) {
985 int isslave;
986 /* master or slave? */
987 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
988 if (retStatus == ISD200_GOOD)
989 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
990
991 if (retStatus == ISD200_GOOD) {
992 retStatus = isd200_srst(us);
993 if (retStatus == ISD200_GOOD)
994 /* ata or atapi? */
995 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
996 }
997
998 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
999 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
1000 US_DEBUGP(" Setting Master/Slave selection to %d\n", isslave);
1001 info->ConfigData.ATAConfig &= 0x3f;
1002 info->ConfigData.ATAConfig |= (isslave<<6);
1003 retStatus = isd200_write_config(us);
1004 }
1005 }
1006
1007 US_DEBUGP("Leaving isd200_manual_enum %08X\n", retStatus);
1008 return(retStatus);
1009 }
1010
1011 static void isd200_fix_driveid (struct hd_driveid *id)
1012 {
1013 #ifndef __LITTLE_ENDIAN
1014 # ifdef __BIG_ENDIAN
1015 int i;
1016 u16 *stringcast;
1017
1018 id->config = __le16_to_cpu(id->config);
1019 id->cyls = __le16_to_cpu(id->cyls);
1020 id->reserved2 = __le16_to_cpu(id->reserved2);
1021 id->heads = __le16_to_cpu(id->heads);
1022 id->track_bytes = __le16_to_cpu(id->track_bytes);
1023 id->sector_bytes = __le16_to_cpu(id->sector_bytes);
1024 id->sectors = __le16_to_cpu(id->sectors);
1025 id->vendor0 = __le16_to_cpu(id->vendor0);
1026 id->vendor1 = __le16_to_cpu(id->vendor1);
1027 id->vendor2 = __le16_to_cpu(id->vendor2);
1028 stringcast = (u16 *)&id->serial_no[0];
1029 for (i = 0; i < (20/2); i++)
1030 stringcast[i] = __le16_to_cpu(stringcast[i]);
1031 id->buf_type = __le16_to_cpu(id->buf_type);
1032 id->buf_size = __le16_to_cpu(id->buf_size);
1033 id->ecc_bytes = __le16_to_cpu(id->ecc_bytes);
1034 stringcast = (u16 *)&id->fw_rev[0];
1035 for (i = 0; i < (8/2); i++)
1036 stringcast[i] = __le16_to_cpu(stringcast[i]);
1037 stringcast = (u16 *)&id->model[0];
1038 for (i = 0; i < (40/2); i++)
1039 stringcast[i] = __le16_to_cpu(stringcast[i]);
1040 id->dword_io = __le16_to_cpu(id->dword_io);
1041 id->reserved50 = __le16_to_cpu(id->reserved50);
1042 id->field_valid = __le16_to_cpu(id->field_valid);
1043 id->cur_cyls = __le16_to_cpu(id->cur_cyls);
1044 id->cur_heads = __le16_to_cpu(id->cur_heads);
1045 id->cur_sectors = __le16_to_cpu(id->cur_sectors);
1046 id->cur_capacity0 = __le16_to_cpu(id->cur_capacity0);
1047 id->cur_capacity1 = __le16_to_cpu(id->cur_capacity1);
1048 id->lba_capacity = __le32_to_cpu(id->lba_capacity);
1049 id->dma_1word = __le16_to_cpu(id->dma_1word);
1050 id->dma_mword = __le16_to_cpu(id->dma_mword);
1051 id->eide_pio_modes = __le16_to_cpu(id->eide_pio_modes);
1052 id->eide_dma_min = __le16_to_cpu(id->eide_dma_min);
1053 id->eide_dma_time = __le16_to_cpu(id->eide_dma_time);
1054 id->eide_pio = __le16_to_cpu(id->eide_pio);
1055 id->eide_pio_iordy = __le16_to_cpu(id->eide_pio_iordy);
1056 for (i = 0; i < 2; ++i)
1057 id->words69_70[i] = __le16_to_cpu(id->words69_70[i]);
1058 for (i = 0; i < 4; ++i)
1059 id->words71_74[i] = __le16_to_cpu(id->words71_74[i]);
1060 id->queue_depth = __le16_to_cpu(id->queue_depth);
1061 for (i = 0; i < 4; ++i)
1062 id->words76_79[i] = __le16_to_cpu(id->words76_79[i]);
1063 id->major_rev_num = __le16_to_cpu(id->major_rev_num);
1064 id->minor_rev_num = __le16_to_cpu(id->minor_rev_num);
1065 id->command_set_1 = __le16_to_cpu(id->command_set_1);
1066 id->command_set_2 = __le16_to_cpu(id->command_set_2);
1067 id->cfsse = __le16_to_cpu(id->cfsse);
1068 id->cfs_enable_1 = __le16_to_cpu(id->cfs_enable_1);
1069 id->cfs_enable_2 = __le16_to_cpu(id->cfs_enable_2);
1070 id->csf_default = __le16_to_cpu(id->csf_default);
1071 id->dma_ultra = __le16_to_cpu(id->dma_ultra);
1072 id->trseuc = __le16_to_cpu(id->trseuc);
1073 id->trsEuc = __le16_to_cpu(id->trsEuc);
1074 id->CurAPMvalues = __le16_to_cpu(id->CurAPMvalues);
1075 id->mprc = __le16_to_cpu(id->mprc);
1076 id->hw_config = __le16_to_cpu(id->hw_config);
1077 id->acoustic = __le16_to_cpu(id->acoustic);
1078 id->msrqs = __le16_to_cpu(id->msrqs);
1079 id->sxfert = __le16_to_cpu(id->sxfert);
1080 id->sal = __le16_to_cpu(id->sal);
1081 id->spg = __le32_to_cpu(id->spg);
1082 id->lba_capacity_2 = __le64_to_cpu(id->lba_capacity_2);
1083 for (i = 0; i < 22; i++)
1084 id->words104_125[i] = __le16_to_cpu(id->words104_125[i]);
1085 id->last_lun = __le16_to_cpu(id->last_lun);
1086 id->word127 = __le16_to_cpu(id->word127);
1087 id->dlf = __le16_to_cpu(id->dlf);
1088 id->csfo = __le16_to_cpu(id->csfo);
1089 for (i = 0; i < 26; i++)
1090 id->words130_155[i] = __le16_to_cpu(id->words130_155[i]);
1091 id->word156 = __le16_to_cpu(id->word156);
1092 for (i = 0; i < 3; i++)
1093 id->words157_159[i] = __le16_to_cpu(id->words157_159[i]);
1094 id->cfa_power = __le16_to_cpu(id->cfa_power);
1095 for (i = 0; i < 14; i++)
1096 id->words161_175[i] = __le16_to_cpu(id->words161_175[i]);
1097 for (i = 0; i < 31; i++)
1098 id->words176_205[i] = __le16_to_cpu(id->words176_205[i]);
1099 for (i = 0; i < 48; i++)
1100 id->words206_254[i] = __le16_to_cpu(id->words206_254[i]);
1101 id->integrity_word = __le16_to_cpu(id->integrity_word);
1102 # else
1103 # error "Please fix <asm/byteorder.h>"
1104 # endif
1105 #endif
1106 }
1107
1108
1109 /**************************************************************************
1110 * isd200_get_inquiry_data
1111 *
1112 * Get inquiry data
1113 *
1114 * RETURNS:
1115 * ISD status code
1116 */
1117 static int isd200_get_inquiry_data( struct us_data *us )
1118 {
1119 struct isd200_info *info = (struct isd200_info *)us->extra;
1120 int retStatus = ISD200_GOOD;
1121 struct hd_driveid *id = info->id;
1122
1123 US_DEBUGP("Entering isd200_get_inquiry_data\n");
1124
1125 /* set default to Master */
1126 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1127
1128 /* attempt to manually enumerate this device */
1129 retStatus = isd200_manual_enum(us);
1130 if (retStatus == ISD200_GOOD) {
1131 int transferStatus;
1132
1133 /* check for an ATA device */
1134 if (info->DeviceFlags & DF_ATA_DEVICE) {
1135 /* this must be an ATA device */
1136 /* perform an ATA Command Identify */
1137 transferStatus = isd200_action( us, ACTION_IDENTIFY,
1138 id,
1139 sizeof(struct hd_driveid) );
1140 if (transferStatus != ISD200_TRANSPORT_GOOD) {
1141 /* Error issuing ATA Command Identify */
1142 US_DEBUGP(" Error issuing ATA Command Identify\n");
1143 retStatus = ISD200_ERROR;
1144 } else {
1145 /* ATA Command Identify successful */
1146 int i;
1147 __be16 *src;
1148 __u16 *dest;
1149 isd200_fix_driveid(id);
1150
1151 US_DEBUGP(" Identify Data Structure:\n");
1152 US_DEBUGP(" config = 0x%x\n", id->config);
1153 US_DEBUGP(" cyls = 0x%x\n", id->cyls);
1154 US_DEBUGP(" heads = 0x%x\n", id->heads);
1155 US_DEBUGP(" track_bytes = 0x%x\n", id->track_bytes);
1156 US_DEBUGP(" sector_bytes = 0x%x\n", id->sector_bytes);
1157 US_DEBUGP(" sectors = 0x%x\n", id->sectors);
1158 US_DEBUGP(" serial_no[0] = 0x%x\n", id->serial_no[0]);
1159 US_DEBUGP(" buf_type = 0x%x\n", id->buf_type);
1160 US_DEBUGP(" buf_size = 0x%x\n", id->buf_size);
1161 US_DEBUGP(" ecc_bytes = 0x%x\n", id->ecc_bytes);
1162 US_DEBUGP(" fw_rev[0] = 0x%x\n", id->fw_rev[0]);
1163 US_DEBUGP(" model[0] = 0x%x\n", id->model[0]);
1164 US_DEBUGP(" max_multsect = 0x%x\n", id->max_multsect);
1165 US_DEBUGP(" dword_io = 0x%x\n", id->dword_io);
1166 US_DEBUGP(" capability = 0x%x\n", id->capability);
1167 US_DEBUGP(" tPIO = 0x%x\n", id->tPIO);
1168 US_DEBUGP(" tDMA = 0x%x\n", id->tDMA);
1169 US_DEBUGP(" field_valid = 0x%x\n", id->field_valid);
1170 US_DEBUGP(" cur_cyls = 0x%x\n", id->cur_cyls);
1171 US_DEBUGP(" cur_heads = 0x%x\n", id->cur_heads);
1172 US_DEBUGP(" cur_sectors = 0x%x\n", id->cur_sectors);
1173 US_DEBUGP(" cur_capacity = 0x%x\n", (id->cur_capacity1 << 16) + id->cur_capacity0 );
1174 US_DEBUGP(" multsect = 0x%x\n", id->multsect);
1175 US_DEBUGP(" lba_capacity = 0x%x\n", id->lba_capacity);
1176 US_DEBUGP(" command_set_1 = 0x%x\n", id->command_set_1);
1177 US_DEBUGP(" command_set_2 = 0x%x\n", id->command_set_2);
1178
1179 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1180
1181 /* Standard IDE interface only supports disks */
1182 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1183
1184 /* The length must be at least 36 (5 + 31) */
1185 info->InquiryData.AdditionalLength = 0x1F;
1186
1187 if (id->command_set_1 & COMMANDSET_MEDIA_STATUS) {
1188 /* set the removable bit */
1189 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1190 info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1191 }
1192
1193 /* Fill in vendor identification fields */
1194 src = (__be16*)id->model;
1195 dest = (__u16*)info->InquiryData.VendorId;
1196 for (i=0;i<4;i++)
1197 dest[i] = be16_to_cpu(src[i]);
1198
1199 src = (__be16*)(id->model+8);
1200 dest = (__u16*)info->InquiryData.ProductId;
1201 for (i=0;i<8;i++)
1202 dest[i] = be16_to_cpu(src[i]);
1203
1204 src = (__be16*)id->fw_rev;
1205 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1206 for (i=0;i<2;i++)
1207 dest[i] = be16_to_cpu(src[i]);
1208
1209 /* determine if it supports Media Status Notification */
1210 if (id->command_set_2 & COMMANDSET_MEDIA_STATUS) {
1211 US_DEBUGP(" Device supports Media Status Notification\n");
1212
1213 /* Indicate that it is enabled, even though it is not
1214 * This allows the lock/unlock of the media to work
1215 * correctly.
1216 */
1217 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1218 }
1219 else
1220 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1221
1222 }
1223 } else {
1224 /*
1225 * this must be an ATAPI device
1226 * use an ATAPI protocol (Transparent SCSI)
1227 */
1228 us->protocol_name = "Transparent SCSI";
1229 us->proto_handler = usb_stor_transparent_scsi_command;
1230
1231 US_DEBUGP("Protocol changed to: %s\n", us->protocol_name);
1232
1233 /* Free driver structure */
1234 us->extra_destructor(info);
1235 kfree(info);
1236 us->extra = NULL;
1237 us->extra_destructor = NULL;
1238 }
1239 }
1240
1241 US_DEBUGP("Leaving isd200_get_inquiry_data %08X\n", retStatus);
1242
1243 return(retStatus);
1244 }
1245
1246 /**************************************************************************
1247 * isd200_scsi_to_ata
1248 *
1249 * Translate SCSI commands to ATA commands.
1250 *
1251 * RETURNS:
1252 * 1 if the command needs to be sent to the transport layer
1253 * 0 otherwise
1254 */
1255 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1256 union ata_cdb * ataCdb)
1257 {
1258 struct isd200_info *info = (struct isd200_info *)us->extra;
1259 struct hd_driveid *id = info->id;
1260 int sendToTransport = 1;
1261 unsigned char sectnum, head;
1262 unsigned short cylinder;
1263 unsigned long lba;
1264 unsigned long blockCount;
1265 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1266
1267 memset(ataCdb, 0, sizeof(union ata_cdb));
1268
1269 /* SCSI Command */
1270 switch (srb->cmnd[0]) {
1271 case INQUIRY:
1272 US_DEBUGP(" ATA OUT - INQUIRY\n");
1273
1274 /* copy InquiryData */
1275 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1276 sizeof(info->InquiryData), srb);
1277 srb->result = SAM_STAT_GOOD;
1278 sendToTransport = 0;
1279 break;
1280
1281 case MODE_SENSE:
1282 US_DEBUGP(" ATA OUT - SCSIOP_MODE_SENSE\n");
1283
1284 /* Initialize the return buffer */
1285 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1286
1287 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1288 {
1289 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1290 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1291 ataCdb->generic.TransferBlockSize = 1;
1292 ataCdb->generic.RegisterSelect = REG_COMMAND;
1293 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1294 isd200_srb_set_bufflen(srb, 0);
1295 } else {
1296 US_DEBUGP(" Media Status not supported, just report okay\n");
1297 srb->result = SAM_STAT_GOOD;
1298 sendToTransport = 0;
1299 }
1300 break;
1301
1302 case TEST_UNIT_READY:
1303 US_DEBUGP(" ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1304
1305 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1306 {
1307 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1308 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1309 ataCdb->generic.TransferBlockSize = 1;
1310 ataCdb->generic.RegisterSelect = REG_COMMAND;
1311 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1312 isd200_srb_set_bufflen(srb, 0);
1313 } else {
1314 US_DEBUGP(" Media Status not supported, just report okay\n");
1315 srb->result = SAM_STAT_GOOD;
1316 sendToTransport = 0;
1317 }
1318 break;
1319
1320 case READ_CAPACITY:
1321 {
1322 unsigned long capacity;
1323 struct read_capacity_data readCapacityData;
1324
1325 US_DEBUGP(" ATA OUT - SCSIOP_READ_CAPACITY\n");
1326
1327 if (id->capability & CAPABILITY_LBA ) {
1328 capacity = id->lba_capacity - 1;
1329 } else {
1330 capacity = (id->heads *
1331 id->cyls *
1332 id->sectors) - 1;
1333 }
1334 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1335 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1336
1337 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1338 sizeof(readCapacityData), srb);
1339 srb->result = SAM_STAT_GOOD;
1340 sendToTransport = 0;
1341 }
1342 break;
1343
1344 case READ_10:
1345 US_DEBUGP(" ATA OUT - SCSIOP_READ\n");
1346
1347 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1348 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1349
1350 if (id->capability & CAPABILITY_LBA) {
1351 sectnum = (unsigned char)(lba);
1352 cylinder = (unsigned short)(lba>>8);
1353 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1354 } else {
1355 sectnum = (unsigned char)((lba % id->sectors) + 1);
1356 cylinder = (unsigned short)(lba / (id->sectors *
1357 id->heads));
1358 head = (unsigned char)((lba / id->sectors) %
1359 id->heads);
1360 }
1361 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1362 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1363 ataCdb->generic.TransferBlockSize = 1;
1364 ataCdb->generic.RegisterSelect =
1365 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1366 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1367 REG_DEVICE_HEAD | REG_COMMAND;
1368 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1369 ataCdb->write.SectorNumberByte = sectnum;
1370 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1371 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1372 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1373 ataCdb->write.CommandByte = WIN_READ;
1374 break;
1375
1376 case WRITE_10:
1377 US_DEBUGP(" ATA OUT - SCSIOP_WRITE\n");
1378
1379 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1380 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1381
1382 if (id->capability & CAPABILITY_LBA) {
1383 sectnum = (unsigned char)(lba);
1384 cylinder = (unsigned short)(lba>>8);
1385 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1386 } else {
1387 sectnum = (unsigned char)((lba % id->sectors) + 1);
1388 cylinder = (unsigned short)(lba / (id->sectors * id->heads));
1389 head = (unsigned char)((lba / id->sectors) % id->heads);
1390 }
1391 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1392 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1393 ataCdb->generic.TransferBlockSize = 1;
1394 ataCdb->generic.RegisterSelect =
1395 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1396 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1397 REG_DEVICE_HEAD | REG_COMMAND;
1398 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1399 ataCdb->write.SectorNumberByte = sectnum;
1400 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1401 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1402 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1403 ataCdb->write.CommandByte = WIN_WRITE;
1404 break;
1405
1406 case ALLOW_MEDIUM_REMOVAL:
1407 US_DEBUGP(" ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1408
1409 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1410 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1411
1412 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1413 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1414 ataCdb->generic.TransferBlockSize = 1;
1415 ataCdb->generic.RegisterSelect = REG_COMMAND;
1416 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1417 WIN_DOORLOCK : WIN_DOORUNLOCK;
1418 isd200_srb_set_bufflen(srb, 0);
1419 } else {
1420 US_DEBUGP(" Not removeable media, just report okay\n");
1421 srb->result = SAM_STAT_GOOD;
1422 sendToTransport = 0;
1423 }
1424 break;
1425
1426 case START_STOP:
1427 US_DEBUGP(" ATA OUT - SCSIOP_START_STOP_UNIT\n");
1428 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1429
1430 if ((srb->cmnd[4] & 0x3) == 0x2) {
1431 US_DEBUGP(" Media Eject\n");
1432 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1433 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1434 ataCdb->generic.TransferBlockSize = 0;
1435 ataCdb->generic.RegisterSelect = REG_COMMAND;
1436 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1437 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1438 US_DEBUGP(" Get Media Status\n");
1439 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1440 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1441 ataCdb->generic.TransferBlockSize = 1;
1442 ataCdb->generic.RegisterSelect = REG_COMMAND;
1443 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1444 isd200_srb_set_bufflen(srb, 0);
1445 } else {
1446 US_DEBUGP(" Nothing to do, just report okay\n");
1447 srb->result = SAM_STAT_GOOD;
1448 sendToTransport = 0;
1449 }
1450 break;
1451
1452 default:
1453 US_DEBUGP("Unsupported SCSI command - 0x%X\n", srb->cmnd[0]);
1454 srb->result = DID_ERROR << 16;
1455 sendToTransport = 0;
1456 break;
1457 }
1458
1459 return(sendToTransport);
1460 }
1461
1462
1463 /**************************************************************************
1464 * isd200_free_info
1465 *
1466 * Frees the driver structure.
1467 */
1468 static void isd200_free_info_ptrs(void *info_)
1469 {
1470 struct isd200_info *info = (struct isd200_info *) info_;
1471
1472 if (info) {
1473 kfree(info->id);
1474 kfree(info->RegsBuf);
1475 kfree(info->srb.sense_buffer);
1476 }
1477 }
1478
1479 /**************************************************************************
1480 * isd200_init_info
1481 *
1482 * Allocates (if necessary) and initializes the driver structure.
1483 *
1484 * RETURNS:
1485 * ISD status code
1486 */
1487 static int isd200_init_info(struct us_data *us)
1488 {
1489 int retStatus = ISD200_GOOD;
1490 struct isd200_info *info;
1491
1492 info = (struct isd200_info *)
1493 kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1494 if (!info)
1495 retStatus = ISD200_ERROR;
1496 else {
1497 info->id = (struct hd_driveid *)
1498 kzalloc(sizeof(struct hd_driveid), GFP_KERNEL);
1499 info->RegsBuf = (unsigned char *)
1500 kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1501 info->srb.sense_buffer =
1502 kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1503 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1504 isd200_free_info_ptrs(info);
1505 kfree(info);
1506 retStatus = ISD200_ERROR;
1507 }
1508 }
1509
1510 if (retStatus == ISD200_GOOD) {
1511 us->extra = info;
1512 us->extra_destructor = isd200_free_info_ptrs;
1513 } else
1514 US_DEBUGP("ERROR - kmalloc failure\n");
1515
1516 return retStatus;
1517 }
1518
1519 /**************************************************************************
1520 * Initialization for the ISD200
1521 */
1522
1523 int isd200_Initialization(struct us_data *us)
1524 {
1525 US_DEBUGP("ISD200 Initialization...\n");
1526
1527 /* Initialize ISD200 info struct */
1528
1529 if (isd200_init_info(us) == ISD200_ERROR) {
1530 US_DEBUGP("ERROR Initializing ISD200 Info struct\n");
1531 } else {
1532 /* Get device specific data */
1533
1534 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1535 US_DEBUGP("ISD200 Initialization Failure\n");
1536 else
1537 US_DEBUGP("ISD200 Initialization complete\n");
1538 }
1539
1540 return 0;
1541 }
1542
1543
1544 /**************************************************************************
1545 * Protocol and Transport for the ISD200 ASIC
1546 *
1547 * This protocol and transport are for ATA devices connected to an ISD200
1548 * ASIC. An ATAPI device that is conected as a slave device will be
1549 * detected in the driver initialization function and the protocol will
1550 * be changed to an ATAPI protocol (Transparent SCSI).
1551 *
1552 */
1553
1554 void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1555 {
1556 int sendToTransport = 1, orig_bufflen;
1557 union ata_cdb ataCdb;
1558
1559 /* Make sure driver was initialized */
1560
1561 if (us->extra == NULL)
1562 US_DEBUGP("ERROR Driver not initialized\n");
1563
1564 scsi_set_resid(srb, 0);
1565 /* scsi_bufflen might change in protocol translation to ata */
1566 orig_bufflen = scsi_bufflen(srb);
1567 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1568
1569 /* send the command to the transport layer */
1570 if (sendToTransport)
1571 isd200_invoke_transport(us, srb, &ataCdb);
1572
1573 isd200_srb_set_bufflen(srb, orig_bufflen);
1574 }
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