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badpage: KERN_ALERT BUG instead of KERN_EMERG
[linux-2.6/mini2440.git] / drivers / usb / storage / isd200.c
blob383abf2516a520a6756c99349a854fb9ee89a2ab
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/slab.h>
48 #include <linux/hdreg.h>
49 #include <linux/scatterlist.h>
50
51 #include <scsi/scsi.h>
52 #include <scsi/scsi_cmnd.h>
53 #include <scsi/scsi_device.h>
54
55 #include "usb.h"
56 #include "transport.h"
57 #include "protocol.h"
58 #include "debug.h"
59 #include "scsiglue.h"
60 #include "isd200.h"
61
62
63 /* Timeout defines (in Seconds) */
64
65 #define ISD200_ENUM_BSY_TIMEOUT 35
66 #define ISD200_ENUM_DETECT_TIMEOUT 30
67 #define ISD200_DEFAULT_TIMEOUT 30
68
69 /* device flags */
70 #define DF_ATA_DEVICE 0x0001
71 #define DF_MEDIA_STATUS_ENABLED 0x0002
72 #define DF_REMOVABLE_MEDIA 0x0004
73
74 /* capability bit definitions */
75 #define CAPABILITY_DMA 0x01
76 #define CAPABILITY_LBA 0x02
77
78 /* command_setX bit definitions */
79 #define COMMANDSET_REMOVABLE 0x02
80 #define COMMANDSET_MEDIA_STATUS 0x10
81
82 /* ATA Vendor Specific defines */
83 #define ATA_ADDRESS_DEVHEAD_STD 0xa0
84 #define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
85 #define ATA_ADDRESS_DEVHEAD_SLAVE 0x10
86
87 /* Action Select bits */
88 #define ACTION_SELECT_0 0x01
89 #define ACTION_SELECT_1 0x02
90 #define ACTION_SELECT_2 0x04
91 #define ACTION_SELECT_3 0x08
92 #define ACTION_SELECT_4 0x10
93 #define ACTION_SELECT_5 0x20
94 #define ACTION_SELECT_6 0x40
95 #define ACTION_SELECT_7 0x80
96
97 /* Register Select bits */
98 #define REG_ALTERNATE_STATUS 0x01
99 #define REG_DEVICE_CONTROL 0x01
100 #define REG_ERROR 0x02
101 #define REG_FEATURES 0x02
102 #define REG_SECTOR_COUNT 0x04
103 #define REG_SECTOR_NUMBER 0x08
104 #define REG_CYLINDER_LOW 0x10
105 #define REG_CYLINDER_HIGH 0x20
106 #define REG_DEVICE_HEAD 0x40
107 #define REG_STATUS 0x80
108 #define REG_COMMAND 0x80
109
110 /* ATA registers offset definitions */
111 #define ATA_REG_ERROR_OFFSET 1
112 #define ATA_REG_LCYL_OFFSET 4
113 #define ATA_REG_HCYL_OFFSET 5
114 #define ATA_REG_STATUS_OFFSET 7
115
116 /* ATA error definitions not in <linux/hdreg.h> */
117 #define ATA_ERROR_MEDIA_CHANGE 0x20
118
119 /* ATA command definitions not in <linux/hdreg.h> */
120 #define ATA_COMMAND_GET_MEDIA_STATUS 0xDA
121 #define ATA_COMMAND_MEDIA_EJECT 0xED
122
123 /* ATA drive control definitions */
124 #define ATA_DC_DISABLE_INTERRUPTS 0x02
125 #define ATA_DC_RESET_CONTROLLER 0x04
126 #define ATA_DC_REENABLE_CONTROLLER 0x00
127
128 /*
129 * General purpose return codes
130 */
131
132 #define ISD200_ERROR -1
133 #define ISD200_GOOD 0
134
135 /*
136 * Transport return codes
137 */
138
139 #define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */
140 #define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */
141 #define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
142
143 /* driver action codes */
144 #define ACTION_READ_STATUS 0
145 #define ACTION_RESET 1
146 #define ACTION_REENABLE 2
147 #define ACTION_SOFT_RESET 3
148 #define ACTION_ENUM 4
149 #define ACTION_IDENTIFY 5
150
151
152 /*
153 * ata_cdb struct
154 */
155
156
157 union ata_cdb {
158 struct {
159 unsigned char SignatureByte0;
160 unsigned char SignatureByte1;
161 unsigned char ActionSelect;
162 unsigned char RegisterSelect;
163 unsigned char TransferBlockSize;
164 unsigned char WriteData3F6;
165 unsigned char WriteData1F1;
166 unsigned char WriteData1F2;
167 unsigned char WriteData1F3;
168 unsigned char WriteData1F4;
169 unsigned char WriteData1F5;
170 unsigned char WriteData1F6;
171 unsigned char WriteData1F7;
172 unsigned char Reserved[3];
173 } generic;
174
175 struct {
176 unsigned char SignatureByte0;
177 unsigned char SignatureByte1;
178 unsigned char ActionSelect;
179 unsigned char RegisterSelect;
180 unsigned char TransferBlockSize;
181 unsigned char AlternateStatusByte;
182 unsigned char ErrorByte;
183 unsigned char SectorCountByte;
184 unsigned char SectorNumberByte;
185 unsigned char CylinderLowByte;
186 unsigned char CylinderHighByte;
187 unsigned char DeviceHeadByte;
188 unsigned char StatusByte;
189 unsigned char Reserved[3];
190 } read;
191
192 struct {
193 unsigned char SignatureByte0;
194 unsigned char SignatureByte1;
195 unsigned char ActionSelect;
196 unsigned char RegisterSelect;
197 unsigned char TransferBlockSize;
198 unsigned char DeviceControlByte;
199 unsigned char FeaturesByte;
200 unsigned char SectorCountByte;
201 unsigned char SectorNumberByte;
202 unsigned char CylinderLowByte;
203 unsigned char CylinderHighByte;
204 unsigned char DeviceHeadByte;
205 unsigned char CommandByte;
206 unsigned char Reserved[3];
207 } write;
208 };
209
210
211 /*
212 * Inquiry data structure. This is the data returned from the target
213 * after it receives an inquiry.
214 *
215 * This structure may be extended by the number of bytes specified
216 * in the field AdditionalLength. The defined size constant only
217 * includes fields through ProductRevisionLevel.
218 */
219
220 /*
221 * DeviceType field
222 */
223 #define DIRECT_ACCESS_DEVICE 0x00 /* disks */
224 #define DEVICE_REMOVABLE 0x80
225
226 struct inquiry_data {
227 unsigned char DeviceType;
228 unsigned char DeviceTypeModifier;
229 unsigned char Versions;
230 unsigned char Format;
231 unsigned char AdditionalLength;
232 unsigned char Reserved[2];
233 unsigned char Capability;
234 unsigned char VendorId[8];
235 unsigned char ProductId[16];
236 unsigned char ProductRevisionLevel[4];
237 unsigned char VendorSpecific[20];
238 unsigned char Reserved3[40];
239 } __attribute__ ((packed));
240
241 /*
242 * INQUIRY data buffer size
243 */
244
245 #define INQUIRYDATABUFFERSIZE 36
246
247
248 /*
249 * ISD200 CONFIG data struct
250 */
251
252 #define ATACFG_TIMING 0x0f
253 #define ATACFG_ATAPI_RESET 0x10
254 #define ATACFG_MASTER 0x20
255 #define ATACFG_BLOCKSIZE 0xa0
256
257 #define ATACFGE_LAST_LUN 0x07
258 #define ATACFGE_DESC_OVERRIDE 0x08
259 #define ATACFGE_STATE_SUSPEND 0x10
260 #define ATACFGE_SKIP_BOOT 0x20
261 #define ATACFGE_CONF_DESC2 0x40
262 #define ATACFGE_INIT_STATUS 0x80
263
264 #define CFG_CAPABILITY_SRST 0x01
265
266 struct isd200_config {
267 unsigned char EventNotification;
268 unsigned char ExternalClock;
269 unsigned char ATAInitTimeout;
270 unsigned char ATAConfig;
271 unsigned char ATAMajorCommand;
272 unsigned char ATAMinorCommand;
273 unsigned char ATAExtraConfig;
274 unsigned char Capability;
275 }__attribute__ ((packed));
276
277
278 /*
279 * ISD200 driver information struct
280 */
281
282 struct isd200_info {
283 struct inquiry_data InquiryData;
284 struct hd_driveid *id;
285 struct isd200_config ConfigData;
286 unsigned char *RegsBuf;
287 unsigned char ATARegs[8];
288 unsigned char DeviceHead;
289 unsigned char DeviceFlags;
290
291 /* maximum number of LUNs supported */
292 unsigned char MaxLUNs;
293 unsigned char cmnd[BLK_MAX_CDB];
294 struct scsi_cmnd srb;
295 struct scatterlist sg;
296 };
297
298
299 /*
300 * Read Capacity Data - returned in Big Endian format
301 */
302
303 struct read_capacity_data {
304 __be32 LogicalBlockAddress;
305 __be32 BytesPerBlock;
306 };
307
308 /*
309 * Read Block Limits Data - returned in Big Endian format
310 * This structure returns the maximum and minimum block
311 * size for a TAPE device.
312 */
313
314 struct read_block_limits {
315 unsigned char Reserved;
316 unsigned char BlockMaximumSize[3];
317 unsigned char BlockMinimumSize[2];
318 };
319
320
321 /*
322 * Sense Data Format
323 */
324
325 #define SENSE_ERRCODE 0x7f
326 #define SENSE_ERRCODE_VALID 0x80
327 #define SENSE_FLAG_SENSE_KEY 0x0f
328 #define SENSE_FLAG_BAD_LENGTH 0x20
329 #define SENSE_FLAG_END_OF_MEDIA 0x40
330 #define SENSE_FLAG_FILE_MARK 0x80
331 struct sense_data {
332 unsigned char ErrorCode;
333 unsigned char SegmentNumber;
334 unsigned char Flags;
335 unsigned char Information[4];
336 unsigned char AdditionalSenseLength;
337 unsigned char CommandSpecificInformation[4];
338 unsigned char AdditionalSenseCode;
339 unsigned char AdditionalSenseCodeQualifier;
340 unsigned char FieldReplaceableUnitCode;
341 unsigned char SenseKeySpecific[3];
342 } __attribute__ ((packed));
343
344 /*
345 * Default request sense buffer size
346 */
347
348 #define SENSE_BUFFER_SIZE 18
349
350 /***********************************************************************
351 * Helper routines
352 ***********************************************************************/
353
354 /**************************************************************************
355 * isd200_build_sense
356 *
357 * Builds an artificial sense buffer to report the results of a
358 * failed command.
359 *
360 * RETURNS:
361 * void
362 */
363 static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
364 {
365 struct isd200_info *info = (struct isd200_info *)us->extra;
366 struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
367 unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET];
368
369 if(error & ATA_ERROR_MEDIA_CHANGE) {
370 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
371 buf->AdditionalSenseLength = 0xb;
372 buf->Flags = UNIT_ATTENTION;
373 buf->AdditionalSenseCode = 0;
374 buf->AdditionalSenseCodeQualifier = 0;
375 } else if(error & MCR_ERR) {
376 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
377 buf->AdditionalSenseLength = 0xb;
378 buf->Flags = UNIT_ATTENTION;
379 buf->AdditionalSenseCode = 0;
380 buf->AdditionalSenseCodeQualifier = 0;
381 } else if(error & TRK0_ERR) {
382 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
383 buf->AdditionalSenseLength = 0xb;
384 buf->Flags = NOT_READY;
385 buf->AdditionalSenseCode = 0;
386 buf->AdditionalSenseCodeQualifier = 0;
387 } else if(error & ECC_ERR) {
388 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
389 buf->AdditionalSenseLength = 0xb;
390 buf->Flags = DATA_PROTECT;
391 buf->AdditionalSenseCode = 0;
392 buf->AdditionalSenseCodeQualifier = 0;
393 } else {
394 buf->ErrorCode = 0;
395 buf->AdditionalSenseLength = 0;
396 buf->Flags = 0;
397 buf->AdditionalSenseCode = 0;
398 buf->AdditionalSenseCodeQualifier = 0;
399 }
400 }
401
402
403 /***********************************************************************
404 * Transport routines
405 ***********************************************************************/
406
407 /**************************************************************************
408 * isd200_set_srb(), isd200_srb_set_bufflen()
409 *
410 * Two helpers to facilitate in initialization of scsi_cmnd structure
411 * Will need to change when struct scsi_cmnd changes
412 */
413 static void isd200_set_srb(struct isd200_info *info,
414 enum dma_data_direction dir, void* buff, unsigned bufflen)
415 {
416 struct scsi_cmnd *srb = &info->srb;
417
418 if (buff)
419 sg_init_one(&info->sg, buff, bufflen);
420
421 srb->sc_data_direction = dir;
422 srb->sdb.table.sgl = buff ? &info->sg : NULL;
423 srb->sdb.length = bufflen;
424 srb->sdb.table.nents = buff ? 1 : 0;
425 }
426
427 static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen)
428 {
429 srb->sdb.length = bufflen;
430 }
431
432
433 /**************************************************************************
434 * isd200_action
435 *
436 * Routine for sending commands to the isd200
437 *
438 * RETURNS:
439 * ISD status code
440 */
441 static int isd200_action( struct us_data *us, int action,
442 void* pointer, int value )
443 {
444 union ata_cdb ata;
445 struct scsi_device srb_dev;
446 struct isd200_info *info = (struct isd200_info *)us->extra;
447 struct scsi_cmnd *srb = &info->srb;
448 int status;
449
450 memset(&ata, 0, sizeof(ata));
451 memset(&srb_dev, 0, sizeof(srb_dev));
452 srb->cmnd = info->cmnd;
453 srb->device = &srb_dev;
454 ++srb->serial_number;
455
456 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
457 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
458 ata.generic.TransferBlockSize = 1;
459
460 switch ( action ) {
461 case ACTION_READ_STATUS:
462 US_DEBUGP(" isd200_action(READ_STATUS)\n");
463 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
464 ata.generic.RegisterSelect =
465 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
466 REG_STATUS | REG_ERROR;
467 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
468 break;
469
470 case ACTION_ENUM:
471 US_DEBUGP(" isd200_action(ENUM,0x%02x)\n",value);
472 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
473 ACTION_SELECT_3|ACTION_SELECT_4|
474 ACTION_SELECT_5;
475 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
476 ata.write.DeviceHeadByte = value;
477 isd200_set_srb(info, DMA_NONE, NULL, 0);
478 break;
479
480 case ACTION_RESET:
481 US_DEBUGP(" isd200_action(RESET)\n");
482 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
483 ACTION_SELECT_3|ACTION_SELECT_4;
484 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
485 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
486 isd200_set_srb(info, DMA_NONE, NULL, 0);
487 break;
488
489 case ACTION_REENABLE:
490 US_DEBUGP(" isd200_action(REENABLE)\n");
491 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
492 ACTION_SELECT_3|ACTION_SELECT_4;
493 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
494 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
495 isd200_set_srb(info, DMA_NONE, NULL, 0);
496 break;
497
498 case ACTION_SOFT_RESET:
499 US_DEBUGP(" isd200_action(SOFT_RESET)\n");
500 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
501 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
502 ata.write.DeviceHeadByte = info->DeviceHead;
503 ata.write.CommandByte = WIN_SRST;
504 isd200_set_srb(info, DMA_NONE, NULL, 0);
505 break;
506
507 case ACTION_IDENTIFY:
508 US_DEBUGP(" isd200_action(IDENTIFY)\n");
509 ata.generic.RegisterSelect = REG_COMMAND;
510 ata.write.CommandByte = WIN_IDENTIFY;
511 isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
512 sizeof(struct hd_driveid));
513 break;
514
515 default:
516 US_DEBUGP("Error: Undefined action %d\n",action);
517 return ISD200_ERROR;
518 }
519
520 memcpy(srb->cmnd, &ata, sizeof(ata.generic));
521 srb->cmd_len = sizeof(ata.generic);
522 status = usb_stor_Bulk_transport(srb, us);
523 if (status == USB_STOR_TRANSPORT_GOOD)
524 status = ISD200_GOOD;
525 else {
526 US_DEBUGP(" isd200_action(0x%02x) error: %d\n",action,status);
527 status = ISD200_ERROR;
528 /* need to reset device here */
529 }
530
531 return status;
532 }
533
534 /**************************************************************************
535 * isd200_read_regs
536 *
537 * Read ATA Registers
538 *
539 * RETURNS:
540 * ISD status code
541 */
542 static int isd200_read_regs( struct us_data *us )
543 {
544 struct isd200_info *info = (struct isd200_info *)us->extra;
545 int retStatus = ISD200_GOOD;
546 int transferStatus;
547
548 US_DEBUGP("Entering isd200_IssueATAReadRegs\n");
549
550 transferStatus = isd200_action( us, ACTION_READ_STATUS,
551 info->RegsBuf, sizeof(info->ATARegs) );
552 if (transferStatus != ISD200_TRANSPORT_GOOD) {
553 US_DEBUGP(" Error reading ATA registers\n");
554 retStatus = ISD200_ERROR;
555 } else {
556 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
557 US_DEBUGP(" Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n",
558 info->ATARegs[ATA_REG_ERROR_OFFSET]);
559 }
560
561 return retStatus;
562 }
563
564
565 /**************************************************************************
566 * Invoke the transport and basic error-handling/recovery methods
567 *
568 * This is used by the protocol layers to actually send the message to
569 * the device and receive the response.
570 */
571 static void isd200_invoke_transport( struct us_data *us,
572 struct scsi_cmnd *srb,
573 union ata_cdb *ataCdb )
574 {
575 int need_auto_sense = 0;
576 int transferStatus;
577 int result;
578
579 /* send the command to the transport layer */
580 memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
581 srb->cmd_len = sizeof(ataCdb->generic);
582 transferStatus = usb_stor_Bulk_transport(srb, us);
583
584 /* if the command gets aborted by the higher layers, we need to
585 * short-circuit all other processing
586 */
587 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
588 US_DEBUGP("-- command was aborted\n");
589 goto Handle_Abort;
590 }
591
592 switch (transferStatus) {
593
594 case USB_STOR_TRANSPORT_GOOD:
595 /* Indicate a good result */
596 srb->result = SAM_STAT_GOOD;
597 break;
598
599 case USB_STOR_TRANSPORT_NO_SENSE:
600 US_DEBUGP("-- transport indicates protocol failure\n");
601 srb->result = SAM_STAT_CHECK_CONDITION;
602 return;
603
604 case USB_STOR_TRANSPORT_FAILED:
605 US_DEBUGP("-- transport indicates command failure\n");
606 need_auto_sense = 1;
607 break;
608
609 case USB_STOR_TRANSPORT_ERROR:
610 US_DEBUGP("-- transport indicates transport error\n");
611 srb->result = DID_ERROR << 16;
612 /* Need reset here */
613 return;
614
615 default:
616 US_DEBUGP("-- transport indicates unknown error\n");
617 srb->result = DID_ERROR << 16;
618 /* Need reset here */
619 return;
620 }
621
622 if ((scsi_get_resid(srb) > 0) &&
623 !((srb->cmnd[0] == REQUEST_SENSE) ||
624 (srb->cmnd[0] == INQUIRY) ||
625 (srb->cmnd[0] == MODE_SENSE) ||
626 (srb->cmnd[0] == LOG_SENSE) ||
627 (srb->cmnd[0] == MODE_SENSE_10))) {
628 US_DEBUGP("-- unexpectedly short transfer\n");
629 need_auto_sense = 1;
630 }
631
632 if (need_auto_sense) {
633 result = isd200_read_regs(us);
634 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
635 US_DEBUGP("-- auto-sense aborted\n");
636 goto Handle_Abort;
637 }
638 if (result == ISD200_GOOD) {
639 isd200_build_sense(us, srb);
640 srb->result = SAM_STAT_CHECK_CONDITION;
641
642 /* If things are really okay, then let's show that */
643 if ((srb->sense_buffer[2] & 0xf) == 0x0)
644 srb->result = SAM_STAT_GOOD;
645 } else {
646 srb->result = DID_ERROR << 16;
647 /* Need reset here */
648 }
649 }
650
651 /* Regardless of auto-sense, if we _know_ we have an error
652 * condition, show that in the result code
653 */
654 if (transferStatus == USB_STOR_TRANSPORT_FAILED)
655 srb->result = SAM_STAT_CHECK_CONDITION;
656 return;
657
658 /* abort processing: the bulk-only transport requires a reset
659 * following an abort */
660 Handle_Abort:
661 srb->result = DID_ABORT << 16;
662
663 /* permit the reset transfer to take place */
664 clear_bit(US_FLIDX_ABORTING, &us->dflags);
665 /* Need reset here */
666 }
667
668 #ifdef CONFIG_USB_STORAGE_DEBUG
669 static void isd200_log_config( struct isd200_info* info )
670 {
671 US_DEBUGP(" Event Notification: 0x%x\n",
672 info->ConfigData.EventNotification);
673 US_DEBUGP(" External Clock: 0x%x\n",
674 info->ConfigData.ExternalClock);
675 US_DEBUGP(" ATA Init Timeout: 0x%x\n",
676 info->ConfigData.ATAInitTimeout);
677 US_DEBUGP(" ATAPI Command Block Size: 0x%x\n",
678 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
679 US_DEBUGP(" Master/Slave Selection: 0x%x\n",
680 info->ConfigData.ATAConfig & ATACFG_MASTER);
681 US_DEBUGP(" ATAPI Reset: 0x%x\n",
682 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
683 US_DEBUGP(" ATA Timing: 0x%x\n",
684 info->ConfigData.ATAConfig & ATACFG_TIMING);
685 US_DEBUGP(" ATA Major Command: 0x%x\n",
686 info->ConfigData.ATAMajorCommand);
687 US_DEBUGP(" ATA Minor Command: 0x%x\n",
688 info->ConfigData.ATAMinorCommand);
689 US_DEBUGP(" Init Status: 0x%x\n",
690 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
691 US_DEBUGP(" Config Descriptor 2: 0x%x\n",
692 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
693 US_DEBUGP(" Skip Device Boot: 0x%x\n",
694 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
695 US_DEBUGP(" ATA 3 State Supsend: 0x%x\n",
696 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
697 US_DEBUGP(" Descriptor Override: 0x%x\n",
698 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
699 US_DEBUGP(" Last LUN Identifier: 0x%x\n",
700 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
701 US_DEBUGP(" SRST Enable: 0x%x\n",
702 info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
703 }
704 #endif
705
706 /**************************************************************************
707 * isd200_write_config
708 *
709 * Write the ISD200 Configuration data
710 *
711 * RETURNS:
712 * ISD status code
713 */
714 static int isd200_write_config( struct us_data *us )
715 {
716 struct isd200_info *info = (struct isd200_info *)us->extra;
717 int retStatus = ISD200_GOOD;
718 int result;
719
720 #ifdef CONFIG_USB_STORAGE_DEBUG
721 US_DEBUGP("Entering isd200_write_config\n");
722 US_DEBUGP(" Writing the following ISD200 Config Data:\n");
723 isd200_log_config(info);
724 #endif
725
726 /* let's send the command via the control pipe */
727 result = usb_stor_ctrl_transfer(
728 us,
729 us->send_ctrl_pipe,
730 0x01,
731 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
732 0x0000,
733 0x0002,
734 (void *) &info->ConfigData,
735 sizeof(info->ConfigData));
736
737 if (result >= 0) {
738 US_DEBUGP(" ISD200 Config Data was written successfully\n");
739 } else {
740 US_DEBUGP(" Request to write ISD200 Config Data failed!\n");
741 retStatus = ISD200_ERROR;
742 }
743
744 US_DEBUGP("Leaving isd200_write_config %08X\n", retStatus);
745 return retStatus;
746 }
747
748
749 /**************************************************************************
750 * isd200_read_config
751 *
752 * Reads the ISD200 Configuration data
753 *
754 * RETURNS:
755 * ISD status code
756 */
757 static int isd200_read_config( struct us_data *us )
758 {
759 struct isd200_info *info = (struct isd200_info *)us->extra;
760 int retStatus = ISD200_GOOD;
761 int result;
762
763 US_DEBUGP("Entering isd200_read_config\n");
764
765 /* read the configuration information from ISD200. Use this to */
766 /* determine what the special ATA CDB bytes are. */
767
768 result = usb_stor_ctrl_transfer(
769 us,
770 us->recv_ctrl_pipe,
771 0x02,
772 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
773 0x0000,
774 0x0002,
775 (void *) &info->ConfigData,
776 sizeof(info->ConfigData));
777
778
779 if (result >= 0) {
780 US_DEBUGP(" Retrieved the following ISD200 Config Data:\n");
781 #ifdef CONFIG_USB_STORAGE_DEBUG
782 isd200_log_config(info);
783 #endif
784 } else {
785 US_DEBUGP(" Request to get ISD200 Config Data failed!\n");
786 retStatus = ISD200_ERROR;
787 }
788
789 US_DEBUGP("Leaving isd200_read_config %08X\n", retStatus);
790 return retStatus;
791 }
792
793
794 /**************************************************************************
795 * isd200_atapi_soft_reset
796 *
797 * Perform an Atapi Soft Reset on the device
798 *
799 * RETURNS:
800 * NT status code
801 */
802 static int isd200_atapi_soft_reset( struct us_data *us )
803 {
804 int retStatus = ISD200_GOOD;
805 int transferStatus;
806
807 US_DEBUGP("Entering isd200_atapi_soft_reset\n");
808
809 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
810 if (transferStatus != ISD200_TRANSPORT_GOOD) {
811 US_DEBUGP(" Error issuing Atapi Soft Reset\n");
812 retStatus = ISD200_ERROR;
813 }
814
815 US_DEBUGP("Leaving isd200_atapi_soft_reset %08X\n", retStatus);
816 return retStatus;
817 }
818
819
820 /**************************************************************************
821 * isd200_srst
822 *
823 * Perform an SRST on the device
824 *
825 * RETURNS:
826 * ISD status code
827 */
828 static int isd200_srst( struct us_data *us )
829 {
830 int retStatus = ISD200_GOOD;
831 int transferStatus;
832
833 US_DEBUGP("Entering isd200_SRST\n");
834
835 transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
836
837 /* check to see if this request failed */
838 if (transferStatus != ISD200_TRANSPORT_GOOD) {
839 US_DEBUGP(" Error issuing SRST\n");
840 retStatus = ISD200_ERROR;
841 } else {
842 /* delay 10ms to give the drive a chance to see it */
843 msleep(10);
844
845 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
846 if (transferStatus != ISD200_TRANSPORT_GOOD) {
847 US_DEBUGP(" Error taking drive out of reset\n");
848 retStatus = ISD200_ERROR;
849 } else {
850 /* delay 50ms to give the drive a chance to recover after SRST */
851 msleep(50);
852 }
853 }
854
855 US_DEBUGP("Leaving isd200_srst %08X\n", retStatus);
856 return retStatus;
857 }
858
859
860 /**************************************************************************
861 * isd200_try_enum
862 *
863 * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
864 * and tries to analyze the status registers
865 *
866 * RETURNS:
867 * ISD status code
868 */
869 static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
870 int detect )
871 {
872 int status = ISD200_GOOD;
873 unsigned long endTime;
874 struct isd200_info *info = (struct isd200_info *)us->extra;
875 unsigned char *regs = info->RegsBuf;
876 int recheckAsMaster = 0;
877
878 if ( detect )
879 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
880 else
881 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
882
883 /* loop until we detect !BSY or timeout */
884 while(1) {
885 #ifdef CONFIG_USB_STORAGE_DEBUG
886 char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ?
887 "Master" : "Slave";
888 #endif
889
890 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
891 if ( status != ISD200_GOOD )
892 break;
893
894 status = isd200_action( us, ACTION_READ_STATUS,
895 regs, 8 );
896 if ( status != ISD200_GOOD )
897 break;
898
899 if (!detect) {
900 if (regs[ATA_REG_STATUS_OFFSET] & BUSY_STAT) {
901 US_DEBUGP(" %s status is still BSY, try again...\n",mstr);
902 } else {
903 US_DEBUGP(" %s status !BSY, continue with next operation\n",mstr);
904 break;
905 }
906 }
907 /* check for BUSY_STAT and */
908 /* WRERR_STAT (workaround ATA Zip drive) and */
909 /* ERR_STAT (workaround for Archos CD-ROM) */
910 else if (regs[ATA_REG_STATUS_OFFSET] &
911 (BUSY_STAT | WRERR_STAT | ERR_STAT )) {
912 US_DEBUGP(" Status indicates it is not ready, try again...\n");
913 }
914 /* check for DRDY, ATA devices set DRDY after SRST */
915 else if (regs[ATA_REG_STATUS_OFFSET] & READY_STAT) {
916 US_DEBUGP(" Identified ATA device\n");
917 info->DeviceFlags |= DF_ATA_DEVICE;
918 info->DeviceHead = master_slave;
919 break;
920 }
921 /* check Cylinder High/Low to
922 determine if it is an ATAPI device
923 */
924 else if (regs[ATA_REG_HCYL_OFFSET] == 0xEB &&
925 regs[ATA_REG_LCYL_OFFSET] == 0x14) {
926 /* It seems that the RICOH
927 MP6200A CD/RW drive will
928 report itself okay as a
929 slave when it is really a
930 master. So this check again
931 as a master device just to
932 make sure it doesn't report
933 itself okay as a master also
934 */
935 if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
936 !recheckAsMaster) {
937 US_DEBUGP(" Identified ATAPI device as slave. Rechecking again as master\n");
938 recheckAsMaster = 1;
939 master_slave = ATA_ADDRESS_DEVHEAD_STD;
940 } else {
941 US_DEBUGP(" Identified ATAPI device\n");
942 info->DeviceHead = master_slave;
943
944 status = isd200_atapi_soft_reset(us);
945 break;
946 }
947 } else {
948 US_DEBUGP(" Not ATA, not ATAPI. Weird.\n");
949 break;
950 }
951
952 /* check for timeout on this request */
953 if (time_after_eq(jiffies, endTime)) {
954 if (!detect)
955 US_DEBUGP(" BSY check timeout, just continue with next operation...\n");
956 else
957 US_DEBUGP(" Device detect timeout!\n");
958 break;
959 }
960 }
961
962 return status;
963 }
964
965 /**************************************************************************
966 * isd200_manual_enum
967 *
968 * Determines if the drive attached is an ATA or ATAPI and if it is a
969 * master or slave.
970 *
971 * RETURNS:
972 * ISD status code
973 */
974 static int isd200_manual_enum(struct us_data *us)
975 {
976 struct isd200_info *info = (struct isd200_info *)us->extra;
977 int retStatus = ISD200_GOOD;
978
979 US_DEBUGP("Entering isd200_manual_enum\n");
980
981 retStatus = isd200_read_config(us);
982 if (retStatus == ISD200_GOOD) {
983 int isslave;
984 /* master or slave? */
985 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
986 if (retStatus == ISD200_GOOD)
987 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
988
989 if (retStatus == ISD200_GOOD) {
990 retStatus = isd200_srst(us);
991 if (retStatus == ISD200_GOOD)
992 /* ata or atapi? */
993 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
994 }
995
996 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
997 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
998 US_DEBUGP(" Setting Master/Slave selection to %d\n", isslave);
999 info->ConfigData.ATAConfig &= 0x3f;
1000 info->ConfigData.ATAConfig |= (isslave<<6);
1001 retStatus = isd200_write_config(us);
1002 }
1003 }
1004
1005 US_DEBUGP("Leaving isd200_manual_enum %08X\n", retStatus);
1006 return(retStatus);
1007 }
1008
1009 static void isd200_fix_driveid (struct hd_driveid *id)
1010 {
1011 #ifndef __LITTLE_ENDIAN
1012 # ifdef __BIG_ENDIAN
1013 int i;
1014 u16 *stringcast;
1015
1016 id->config = __le16_to_cpu(id->config);
1017 id->cyls = __le16_to_cpu(id->cyls);
1018 id->reserved2 = __le16_to_cpu(id->reserved2);
1019 id->heads = __le16_to_cpu(id->heads);
1020 id->track_bytes = __le16_to_cpu(id->track_bytes);
1021 id->sector_bytes = __le16_to_cpu(id->sector_bytes);
1022 id->sectors = __le16_to_cpu(id->sectors);
1023 id->vendor0 = __le16_to_cpu(id->vendor0);
1024 id->vendor1 = __le16_to_cpu(id->vendor1);
1025 id->vendor2 = __le16_to_cpu(id->vendor2);
1026 stringcast = (u16 *)&id->serial_no[0];
1027 for (i = 0; i < (20/2); i++)
1028 stringcast[i] = __le16_to_cpu(stringcast[i]);
1029 id->buf_type = __le16_to_cpu(id->buf_type);
1030 id->buf_size = __le16_to_cpu(id->buf_size);
1031 id->ecc_bytes = __le16_to_cpu(id->ecc_bytes);
1032 stringcast = (u16 *)&id->fw_rev[0];
1033 for (i = 0; i < (8/2); i++)
1034 stringcast[i] = __le16_to_cpu(stringcast[i]);
1035 stringcast = (u16 *)&id->model[0];
1036 for (i = 0; i < (40/2); i++)
1037 stringcast[i] = __le16_to_cpu(stringcast[i]);
1038 id->dword_io = __le16_to_cpu(id->dword_io);
1039 id->reserved50 = __le16_to_cpu(id->reserved50);
1040 id->field_valid = __le16_to_cpu(id->field_valid);
1041 id->cur_cyls = __le16_to_cpu(id->cur_cyls);
1042 id->cur_heads = __le16_to_cpu(id->cur_heads);
1043 id->cur_sectors = __le16_to_cpu(id->cur_sectors);
1044 id->cur_capacity0 = __le16_to_cpu(id->cur_capacity0);
1045 id->cur_capacity1 = __le16_to_cpu(id->cur_capacity1);
1046 id->lba_capacity = __le32_to_cpu(id->lba_capacity);
1047 id->dma_1word = __le16_to_cpu(id->dma_1word);
1048 id->dma_mword = __le16_to_cpu(id->dma_mword);
1049 id->eide_pio_modes = __le16_to_cpu(id->eide_pio_modes);
1050 id->eide_dma_min = __le16_to_cpu(id->eide_dma_min);
1051 id->eide_dma_time = __le16_to_cpu(id->eide_dma_time);
1052 id->eide_pio = __le16_to_cpu(id->eide_pio);
1053 id->eide_pio_iordy = __le16_to_cpu(id->eide_pio_iordy);
1054 for (i = 0; i < 2; ++i)
1055 id->words69_70[i] = __le16_to_cpu(id->words69_70[i]);
1056 for (i = 0; i < 4; ++i)
1057 id->words71_74[i] = __le16_to_cpu(id->words71_74[i]);
1058 id->queue_depth = __le16_to_cpu(id->queue_depth);
1059 for (i = 0; i < 4; ++i)
1060 id->words76_79[i] = __le16_to_cpu(id->words76_79[i]);
1061 id->major_rev_num = __le16_to_cpu(id->major_rev_num);
1062 id->minor_rev_num = __le16_to_cpu(id->minor_rev_num);
1063 id->command_set_1 = __le16_to_cpu(id->command_set_1);
1064 id->command_set_2 = __le16_to_cpu(id->command_set_2);
1065 id->cfsse = __le16_to_cpu(id->cfsse);
1066 id->cfs_enable_1 = __le16_to_cpu(id->cfs_enable_1);
1067 id->cfs_enable_2 = __le16_to_cpu(id->cfs_enable_2);
1068 id->csf_default = __le16_to_cpu(id->csf_default);
1069 id->dma_ultra = __le16_to_cpu(id->dma_ultra);
1070 id->trseuc = __le16_to_cpu(id->trseuc);
1071 id->trsEuc = __le16_to_cpu(id->trsEuc);
1072 id->CurAPMvalues = __le16_to_cpu(id->CurAPMvalues);
1073 id->mprc = __le16_to_cpu(id->mprc);
1074 id->hw_config = __le16_to_cpu(id->hw_config);
1075 id->acoustic = __le16_to_cpu(id->acoustic);
1076 id->msrqs = __le16_to_cpu(id->msrqs);
1077 id->sxfert = __le16_to_cpu(id->sxfert);
1078 id->sal = __le16_to_cpu(id->sal);
1079 id->spg = __le32_to_cpu(id->spg);
1080 id->lba_capacity_2 = __le64_to_cpu(id->lba_capacity_2);
1081 for (i = 0; i < 22; i++)
1082 id->words104_125[i] = __le16_to_cpu(id->words104_125[i]);
1083 id->last_lun = __le16_to_cpu(id->last_lun);
1084 id->word127 = __le16_to_cpu(id->word127);
1085 id->dlf = __le16_to_cpu(id->dlf);
1086 id->csfo = __le16_to_cpu(id->csfo);
1087 for (i = 0; i < 26; i++)
1088 id->words130_155[i] = __le16_to_cpu(id->words130_155[i]);
1089 id->word156 = __le16_to_cpu(id->word156);
1090 for (i = 0; i < 3; i++)
1091 id->words157_159[i] = __le16_to_cpu(id->words157_159[i]);
1092 id->cfa_power = __le16_to_cpu(id->cfa_power);
1093 for (i = 0; i < 14; i++)
1094 id->words161_175[i] = __le16_to_cpu(id->words161_175[i]);
1095 for (i = 0; i < 31; i++)
1096 id->words176_205[i] = __le16_to_cpu(id->words176_205[i]);
1097 for (i = 0; i < 48; i++)
1098 id->words206_254[i] = __le16_to_cpu(id->words206_254[i]);
1099 id->integrity_word = __le16_to_cpu(id->integrity_word);
1100 # else
1101 # error "Please fix <asm/byteorder.h>"
1102 # endif
1103 #endif
1104 }
1105
1106
1107 /**************************************************************************
1108 * isd200_get_inquiry_data
1109 *
1110 * Get inquiry data
1111 *
1112 * RETURNS:
1113 * ISD status code
1114 */
1115 static int isd200_get_inquiry_data( struct us_data *us )
1116 {
1117 struct isd200_info *info = (struct isd200_info *)us->extra;
1118 int retStatus = ISD200_GOOD;
1119 struct hd_driveid *id = info->id;
1120
1121 US_DEBUGP("Entering isd200_get_inquiry_data\n");
1122
1123 /* set default to Master */
1124 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1125
1126 /* attempt to manually enumerate this device */
1127 retStatus = isd200_manual_enum(us);
1128 if (retStatus == ISD200_GOOD) {
1129 int transferStatus;
1130
1131 /* check for an ATA device */
1132 if (info->DeviceFlags & DF_ATA_DEVICE) {
1133 /* this must be an ATA device */
1134 /* perform an ATA Command Identify */
1135 transferStatus = isd200_action( us, ACTION_IDENTIFY,
1136 id,
1137 sizeof(struct hd_driveid) );
1138 if (transferStatus != ISD200_TRANSPORT_GOOD) {
1139 /* Error issuing ATA Command Identify */
1140 US_DEBUGP(" Error issuing ATA Command Identify\n");
1141 retStatus = ISD200_ERROR;
1142 } else {
1143 /* ATA Command Identify successful */
1144 int i;
1145 __be16 *src;
1146 __u16 *dest;
1147 isd200_fix_driveid(id);
1148
1149 US_DEBUGP(" Identify Data Structure:\n");
1150 US_DEBUGP(" config = 0x%x\n", id->config);
1151 US_DEBUGP(" cyls = 0x%x\n", id->cyls);
1152 US_DEBUGP(" heads = 0x%x\n", id->heads);
1153 US_DEBUGP(" track_bytes = 0x%x\n", id->track_bytes);
1154 US_DEBUGP(" sector_bytes = 0x%x\n", id->sector_bytes);
1155 US_DEBUGP(" sectors = 0x%x\n", id->sectors);
1156 US_DEBUGP(" serial_no[0] = 0x%x\n", id->serial_no[0]);
1157 US_DEBUGP(" buf_type = 0x%x\n", id->buf_type);
1158 US_DEBUGP(" buf_size = 0x%x\n", id->buf_size);
1159 US_DEBUGP(" ecc_bytes = 0x%x\n", id->ecc_bytes);
1160 US_DEBUGP(" fw_rev[0] = 0x%x\n", id->fw_rev[0]);
1161 US_DEBUGP(" model[0] = 0x%x\n", id->model[0]);
1162 US_DEBUGP(" max_multsect = 0x%x\n", id->max_multsect);
1163 US_DEBUGP(" dword_io = 0x%x\n", id->dword_io);
1164 US_DEBUGP(" capability = 0x%x\n", id->capability);
1165 US_DEBUGP(" tPIO = 0x%x\n", id->tPIO);
1166 US_DEBUGP(" tDMA = 0x%x\n", id->tDMA);
1167 US_DEBUGP(" field_valid = 0x%x\n", id->field_valid);
1168 US_DEBUGP(" cur_cyls = 0x%x\n", id->cur_cyls);
1169 US_DEBUGP(" cur_heads = 0x%x\n", id->cur_heads);
1170 US_DEBUGP(" cur_sectors = 0x%x\n", id->cur_sectors);
1171 US_DEBUGP(" cur_capacity = 0x%x\n", (id->cur_capacity1 << 16) + id->cur_capacity0 );
1172 US_DEBUGP(" multsect = 0x%x\n", id->multsect);
1173 US_DEBUGP(" lba_capacity = 0x%x\n", id->lba_capacity);
1174 US_DEBUGP(" command_set_1 = 0x%x\n", id->command_set_1);
1175 US_DEBUGP(" command_set_2 = 0x%x\n", id->command_set_2);
1176
1177 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1178
1179 /* Standard IDE interface only supports disks */
1180 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1181
1182 /* The length must be at least 36 (5 + 31) */
1183 info->InquiryData.AdditionalLength = 0x1F;
1184
1185 if (id->command_set_1 & COMMANDSET_MEDIA_STATUS) {
1186 /* set the removable bit */
1187 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1188 info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1189 }
1190
1191 /* Fill in vendor identification fields */
1192 src = (__be16*)id->model;
1193 dest = (__u16*)info->InquiryData.VendorId;
1194 for (i=0;i<4;i++)
1195 dest[i] = be16_to_cpu(src[i]);
1196
1197 src = (__be16*)(id->model+8);
1198 dest = (__u16*)info->InquiryData.ProductId;
1199 for (i=0;i<8;i++)
1200 dest[i] = be16_to_cpu(src[i]);
1201
1202 src = (__be16*)id->fw_rev;
1203 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1204 for (i=0;i<2;i++)
1205 dest[i] = be16_to_cpu(src[i]);
1206
1207 /* determine if it supports Media Status Notification */
1208 if (id->command_set_2 & COMMANDSET_MEDIA_STATUS) {
1209 US_DEBUGP(" Device supports Media Status Notification\n");
1210
1211 /* Indicate that it is enabled, even though it is not
1212 * This allows the lock/unlock of the media to work
1213 * correctly.
1214 */
1215 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1216 }
1217 else
1218 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1219
1220 }
1221 } else {
1222 /*
1223 * this must be an ATAPI device
1224 * use an ATAPI protocol (Transparent SCSI)
1225 */
1226 us->protocol_name = "Transparent SCSI";
1227 us->proto_handler = usb_stor_transparent_scsi_command;
1228
1229 US_DEBUGP("Protocol changed to: %s\n", us->protocol_name);
1230
1231 /* Free driver structure */
1232 us->extra_destructor(info);
1233 kfree(info);
1234 us->extra = NULL;
1235 us->extra_destructor = NULL;
1236 }
1237 }
1238
1239 US_DEBUGP("Leaving isd200_get_inquiry_data %08X\n", retStatus);
1240
1241 return(retStatus);
1242 }
1243
1244 /**************************************************************************
1245 * isd200_scsi_to_ata
1246 *
1247 * Translate SCSI commands to ATA commands.
1248 *
1249 * RETURNS:
1250 * 1 if the command needs to be sent to the transport layer
1251 * 0 otherwise
1252 */
1253 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1254 union ata_cdb * ataCdb)
1255 {
1256 struct isd200_info *info = (struct isd200_info *)us->extra;
1257 struct hd_driveid *id = info->id;
1258 int sendToTransport = 1;
1259 unsigned char sectnum, head;
1260 unsigned short cylinder;
1261 unsigned long lba;
1262 unsigned long blockCount;
1263 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1264
1265 memset(ataCdb, 0, sizeof(union ata_cdb));
1266
1267 /* SCSI Command */
1268 switch (srb->cmnd[0]) {
1269 case INQUIRY:
1270 US_DEBUGP(" ATA OUT - INQUIRY\n");
1271
1272 /* copy InquiryData */
1273 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1274 sizeof(info->InquiryData), srb);
1275 srb->result = SAM_STAT_GOOD;
1276 sendToTransport = 0;
1277 break;
1278
1279 case MODE_SENSE:
1280 US_DEBUGP(" ATA OUT - SCSIOP_MODE_SENSE\n");
1281
1282 /* Initialize the return buffer */
1283 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1284
1285 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1286 {
1287 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1288 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1289 ataCdb->generic.TransferBlockSize = 1;
1290 ataCdb->generic.RegisterSelect = REG_COMMAND;
1291 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1292 isd200_srb_set_bufflen(srb, 0);
1293 } else {
1294 US_DEBUGP(" Media Status not supported, just report okay\n");
1295 srb->result = SAM_STAT_GOOD;
1296 sendToTransport = 0;
1297 }
1298 break;
1299
1300 case TEST_UNIT_READY:
1301 US_DEBUGP(" ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1302
1303 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1304 {
1305 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1306 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1307 ataCdb->generic.TransferBlockSize = 1;
1308 ataCdb->generic.RegisterSelect = REG_COMMAND;
1309 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1310 isd200_srb_set_bufflen(srb, 0);
1311 } else {
1312 US_DEBUGP(" Media Status not supported, just report okay\n");
1313 srb->result = SAM_STAT_GOOD;
1314 sendToTransport = 0;
1315 }
1316 break;
1317
1318 case READ_CAPACITY:
1319 {
1320 unsigned long capacity;
1321 struct read_capacity_data readCapacityData;
1322
1323 US_DEBUGP(" ATA OUT - SCSIOP_READ_CAPACITY\n");
1324
1325 if (id->capability & CAPABILITY_LBA ) {
1326 capacity = id->lba_capacity - 1;
1327 } else {
1328 capacity = (id->heads *
1329 id->cyls *
1330 id->sectors) - 1;
1331 }
1332 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1333 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1334
1335 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1336 sizeof(readCapacityData), srb);
1337 srb->result = SAM_STAT_GOOD;
1338 sendToTransport = 0;
1339 }
1340 break;
1341
1342 case READ_10:
1343 US_DEBUGP(" ATA OUT - SCSIOP_READ\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 (id->capability & CAPABILITY_LBA) {
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 = (unsigned char)((lba % id->sectors) + 1);
1354 cylinder = (unsigned short)(lba / (id->sectors *
1355 id->heads));
1356 head = (unsigned char)((lba / id->sectors) %
1357 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 = WIN_READ;
1372 break;
1373
1374 case WRITE_10:
1375 US_DEBUGP(" ATA OUT - SCSIOP_WRITE\n");
1376
1377 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1378 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1379
1380 if (id->capability & CAPABILITY_LBA) {
1381 sectnum = (unsigned char)(lba);
1382 cylinder = (unsigned short)(lba>>8);
1383 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1384 } else {
1385 sectnum = (unsigned char)((lba % id->sectors) + 1);
1386 cylinder = (unsigned short)(lba / (id->sectors * id->heads));
1387 head = (unsigned char)((lba / id->sectors) % id->heads);
1388 }
1389 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1390 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1391 ataCdb->generic.TransferBlockSize = 1;
1392 ataCdb->generic.RegisterSelect =
1393 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1394 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1395 REG_DEVICE_HEAD | REG_COMMAND;
1396 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1397 ataCdb->write.SectorNumberByte = sectnum;
1398 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1399 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1400 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1401 ataCdb->write.CommandByte = WIN_WRITE;
1402 break;
1403
1404 case ALLOW_MEDIUM_REMOVAL:
1405 US_DEBUGP(" ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1406
1407 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1408 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1409
1410 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1411 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1412 ataCdb->generic.TransferBlockSize = 1;
1413 ataCdb->generic.RegisterSelect = REG_COMMAND;
1414 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1415 WIN_DOORLOCK : WIN_DOORUNLOCK;
1416 isd200_srb_set_bufflen(srb, 0);
1417 } else {
1418 US_DEBUGP(" Not removeable media, just report okay\n");
1419 srb->result = SAM_STAT_GOOD;
1420 sendToTransport = 0;
1421 }
1422 break;
1423
1424 case START_STOP:
1425 US_DEBUGP(" ATA OUT - SCSIOP_START_STOP_UNIT\n");
1426 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1427
1428 if ((srb->cmnd[4] & 0x3) == 0x2) {
1429 US_DEBUGP(" Media Eject\n");
1430 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1431 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1432 ataCdb->generic.TransferBlockSize = 0;
1433 ataCdb->generic.RegisterSelect = REG_COMMAND;
1434 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1435 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1436 US_DEBUGP(" Get Media Status\n");
1437 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1438 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1439 ataCdb->generic.TransferBlockSize = 1;
1440 ataCdb->generic.RegisterSelect = REG_COMMAND;
1441 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1442 isd200_srb_set_bufflen(srb, 0);
1443 } else {
1444 US_DEBUGP(" Nothing to do, just report okay\n");
1445 srb->result = SAM_STAT_GOOD;
1446 sendToTransport = 0;
1447 }
1448 break;
1449
1450 default:
1451 US_DEBUGP("Unsupported SCSI command - 0x%X\n", srb->cmnd[0]);
1452 srb->result = DID_ERROR << 16;
1453 sendToTransport = 0;
1454 break;
1455 }
1456
1457 return(sendToTransport);
1458 }
1459
1460
1461 /**************************************************************************
1462 * isd200_free_info
1463 *
1464 * Frees the driver structure.
1465 */
1466 static void isd200_free_info_ptrs(void *info_)
1467 {
1468 struct isd200_info *info = (struct isd200_info *) info_;
1469
1470 if (info) {
1471 kfree(info->id);
1472 kfree(info->RegsBuf);
1473 kfree(info->srb.sense_buffer);
1474 }
1475 }
1476
1477 /**************************************************************************
1478 * isd200_init_info
1479 *
1480 * Allocates (if necessary) and initializes the driver structure.
1481 *
1482 * RETURNS:
1483 * ISD status code
1484 */
1485 static int isd200_init_info(struct us_data *us)
1486 {
1487 int retStatus = ISD200_GOOD;
1488 struct isd200_info *info;
1489
1490 info = (struct isd200_info *)
1491 kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1492 if (!info)
1493 retStatus = ISD200_ERROR;
1494 else {
1495 info->id = (struct hd_driveid *)
1496 kzalloc(sizeof(struct hd_driveid), GFP_KERNEL);
1497 info->RegsBuf = (unsigned char *)
1498 kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1499 info->srb.sense_buffer =
1500 kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1501 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1502 isd200_free_info_ptrs(info);
1503 kfree(info);
1504 retStatus = ISD200_ERROR;
1505 }
1506 }
1507
1508 if (retStatus == ISD200_GOOD) {
1509 us->extra = info;
1510 us->extra_destructor = isd200_free_info_ptrs;
1511 } else
1512 US_DEBUGP("ERROR - kmalloc failure\n");
1513
1514 return retStatus;
1515 }
1516
1517 /**************************************************************************
1518 * Initialization for the ISD200
1519 */
1520
1521 int isd200_Initialization(struct us_data *us)
1522 {
1523 US_DEBUGP("ISD200 Initialization...\n");
1524
1525 /* Initialize ISD200 info struct */
1526
1527 if (isd200_init_info(us) == ISD200_ERROR) {
1528 US_DEBUGP("ERROR Initializing ISD200 Info struct\n");
1529 } else {
1530 /* Get device specific data */
1531
1532 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1533 US_DEBUGP("ISD200 Initialization Failure\n");
1534 else
1535 US_DEBUGP("ISD200 Initialization complete\n");
1536 }
1537
1538 return 0;
1539 }
1540
1541
1542 /**************************************************************************
1543 * Protocol and Transport for the ISD200 ASIC
1544 *
1545 * This protocol and transport are for ATA devices connected to an ISD200
1546 * ASIC. An ATAPI device that is conected as a slave device will be
1547 * detected in the driver initialization function and the protocol will
1548 * be changed to an ATAPI protocol (Transparent SCSI).
1549 *
1550 */
1551
1552 void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1553 {
1554 int sendToTransport = 1, orig_bufflen;
1555 union ata_cdb ataCdb;
1556
1557 /* Make sure driver was initialized */
1558
1559 if (us->extra == NULL)
1560 US_DEBUGP("ERROR Driver not initialized\n");
1561
1562 scsi_set_resid(srb, 0);
1563 /* scsi_bufflen might change in protocol translation to ata */
1564 orig_bufflen = scsi_bufflen(srb);
1565 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1566
1567 /* send the command to the transport layer */
1568 if (sendToTransport)
1569 isd200_invoke_transport(us, srb, &ataCdb);
1570
1571 isd200_srb_set_bufflen(srb, orig_bufflen);
1572 }
Support for the Chinese Samsung S3C2440 based development boards