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Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / storage / isd200.c
blobecb328aa9ea1bb2f3feda239bba137ef3df2b63e
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/ide.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 error definitions not in <linux/hdreg.h> */
113 #define ATA_ERROR_MEDIA_CHANGE 0x20
114
115 /* ATA command definitions not in <linux/hdreg.h> */
116 #define ATA_COMMAND_GET_MEDIA_STATUS 0xDA
117 #define ATA_COMMAND_MEDIA_EJECT 0xED
118
119 /* ATA drive control definitions */
120 #define ATA_DC_DISABLE_INTERRUPTS 0x02
121 #define ATA_DC_RESET_CONTROLLER 0x04
122 #define ATA_DC_REENABLE_CONTROLLER 0x00
123
124 /*
125 * General purpose return codes
126 */
127
128 #define ISD200_ERROR -1
129 #define ISD200_GOOD 0
130
131 /*
132 * Transport return codes
133 */
134
135 #define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */
136 #define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */
137 #define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
138
139 /* driver action codes */
140 #define ACTION_READ_STATUS 0
141 #define ACTION_RESET 1
142 #define ACTION_REENABLE 2
143 #define ACTION_SOFT_RESET 3
144 #define ACTION_ENUM 4
145 #define ACTION_IDENTIFY 5
146
147
148 /*
149 * ata_cdb struct
150 */
151
152
153 union ata_cdb {
154 struct {
155 unsigned char SignatureByte0;
156 unsigned char SignatureByte1;
157 unsigned char ActionSelect;
158 unsigned char RegisterSelect;
159 unsigned char TransferBlockSize;
160 unsigned char WriteData3F6;
161 unsigned char WriteData1F1;
162 unsigned char WriteData1F2;
163 unsigned char WriteData1F3;
164 unsigned char WriteData1F4;
165 unsigned char WriteData1F5;
166 unsigned char WriteData1F6;
167 unsigned char WriteData1F7;
168 unsigned char Reserved[3];
169 } generic;
170
171 struct {
172 unsigned char SignatureByte0;
173 unsigned char SignatureByte1;
174 unsigned char ActionSelect;
175 unsigned char RegisterSelect;
176 unsigned char TransferBlockSize;
177 unsigned char AlternateStatusByte;
178 unsigned char ErrorByte;
179 unsigned char SectorCountByte;
180 unsigned char SectorNumberByte;
181 unsigned char CylinderLowByte;
182 unsigned char CylinderHighByte;
183 unsigned char DeviceHeadByte;
184 unsigned char StatusByte;
185 unsigned char Reserved[3];
186 } read;
187
188 struct {
189 unsigned char SignatureByte0;
190 unsigned char SignatureByte1;
191 unsigned char ActionSelect;
192 unsigned char RegisterSelect;
193 unsigned char TransferBlockSize;
194 unsigned char DeviceControlByte;
195 unsigned char FeaturesByte;
196 unsigned char SectorCountByte;
197 unsigned char SectorNumberByte;
198 unsigned char CylinderLowByte;
199 unsigned char CylinderHighByte;
200 unsigned char DeviceHeadByte;
201 unsigned char CommandByte;
202 unsigned char Reserved[3];
203 } write;
204 };
205
206
207 /*
208 * Inquiry data structure. This is the data returned from the target
209 * after it receives an inquiry.
210 *
211 * This structure may be extended by the number of bytes specified
212 * in the field AdditionalLength. The defined size constant only
213 * includes fields through ProductRevisionLevel.
214 */
215
216 /*
217 * DeviceType field
218 */
219 #define DIRECT_ACCESS_DEVICE 0x00 /* disks */
220 #define DEVICE_REMOVABLE 0x80
221
222 struct inquiry_data {
223 unsigned char DeviceType;
224 unsigned char DeviceTypeModifier;
225 unsigned char Versions;
226 unsigned char Format;
227 unsigned char AdditionalLength;
228 unsigned char Reserved[2];
229 unsigned char Capability;
230 unsigned char VendorId[8];
231 unsigned char ProductId[16];
232 unsigned char ProductRevisionLevel[4];
233 unsigned char VendorSpecific[20];
234 unsigned char Reserved3[40];
235 } __attribute__ ((packed));
236
237 /*
238 * INQUIRY data buffer size
239 */
240
241 #define INQUIRYDATABUFFERSIZE 36
242
243
244 /*
245 * ISD200 CONFIG data struct
246 */
247
248 #define ATACFG_TIMING 0x0f
249 #define ATACFG_ATAPI_RESET 0x10
250 #define ATACFG_MASTER 0x20
251 #define ATACFG_BLOCKSIZE 0xa0
252
253 #define ATACFGE_LAST_LUN 0x07
254 #define ATACFGE_DESC_OVERRIDE 0x08
255 #define ATACFGE_STATE_SUSPEND 0x10
256 #define ATACFGE_SKIP_BOOT 0x20
257 #define ATACFGE_CONF_DESC2 0x40
258 #define ATACFGE_INIT_STATUS 0x80
259
260 #define CFG_CAPABILITY_SRST 0x01
261
262 struct isd200_config {
263 unsigned char EventNotification;
264 unsigned char ExternalClock;
265 unsigned char ATAInitTimeout;
266 unsigned char ATAConfig;
267 unsigned char ATAMajorCommand;
268 unsigned char ATAMinorCommand;
269 unsigned char ATAExtraConfig;
270 unsigned char Capability;
271 }__attribute__ ((packed));
272
273
274 /*
275 * ISD200 driver information struct
276 */
277
278 struct isd200_info {
279 struct inquiry_data InquiryData;
280 struct hd_driveid *id;
281 struct isd200_config ConfigData;
282 unsigned char *RegsBuf;
283 unsigned char ATARegs[8];
284 unsigned char DeviceHead;
285 unsigned char DeviceFlags;
286
287 /* maximum number of LUNs supported */
288 unsigned char MaxLUNs;
289 struct scsi_cmnd srb;
290 };
291
292
293 /*
294 * Read Capacity Data - returned in Big Endian format
295 */
296
297 struct read_capacity_data {
298 __be32 LogicalBlockAddress;
299 __be32 BytesPerBlock;
300 };
301
302 /*
303 * Read Block Limits Data - returned in Big Endian format
304 * This structure returns the maximum and minimum block
305 * size for a TAPE device.
306 */
307
308 struct read_block_limits {
309 unsigned char Reserved;
310 unsigned char BlockMaximumSize[3];
311 unsigned char BlockMinimumSize[2];
312 };
313
314
315 /*
316 * Sense Data Format
317 */
318
319 #define SENSE_ERRCODE 0x7f
320 #define SENSE_ERRCODE_VALID 0x80
321 #define SENSE_FLAG_SENSE_KEY 0x0f
322 #define SENSE_FLAG_BAD_LENGTH 0x20
323 #define SENSE_FLAG_END_OF_MEDIA 0x40
324 #define SENSE_FLAG_FILE_MARK 0x80
325 struct sense_data {
326 unsigned char ErrorCode;
327 unsigned char SegmentNumber;
328 unsigned char Flags;
329 unsigned char Information[4];
330 unsigned char AdditionalSenseLength;
331 unsigned char CommandSpecificInformation[4];
332 unsigned char AdditionalSenseCode;
333 unsigned char AdditionalSenseCodeQualifier;
334 unsigned char FieldReplaceableUnitCode;
335 unsigned char SenseKeySpecific[3];
336 } __attribute__ ((packed));
337
338 /*
339 * Default request sense buffer size
340 */
341
342 #define SENSE_BUFFER_SIZE 18
343
344 /***********************************************************************
345 * Helper routines
346 ***********************************************************************/
347
348 /**************************************************************************
349 * isd200_build_sense
350 *
351 * Builds an artificial sense buffer to report the results of a
352 * failed command.
353 *
354 * RETURNS:
355 * void
356 */
357 static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
358 {
359 struct isd200_info *info = (struct isd200_info *)us->extra;
360 struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
361 unsigned char error = info->ATARegs[IDE_ERROR_OFFSET];
362
363 if(error & ATA_ERROR_MEDIA_CHANGE) {
364 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
365 buf->AdditionalSenseLength = 0xb;
366 buf->Flags = UNIT_ATTENTION;
367 buf->AdditionalSenseCode = 0;
368 buf->AdditionalSenseCodeQualifier = 0;
369 } else if(error & MCR_ERR) {
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 & TRK0_ERR) {
376 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
377 buf->AdditionalSenseLength = 0xb;
378 buf->Flags = NOT_READY;
379 buf->AdditionalSenseCode = 0;
380 buf->AdditionalSenseCodeQualifier = 0;
381 } else if(error & ECC_ERR) {
382 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
383 buf->AdditionalSenseLength = 0xb;
384 buf->Flags = DATA_PROTECT;
385 buf->AdditionalSenseCode = 0;
386 buf->AdditionalSenseCodeQualifier = 0;
387 } else {
388 buf->ErrorCode = 0;
389 buf->AdditionalSenseLength = 0;
390 buf->Flags = 0;
391 buf->AdditionalSenseCode = 0;
392 buf->AdditionalSenseCodeQualifier = 0;
393 }
394 }
395
396
397 /***********************************************************************
398 * Transport routines
399 ***********************************************************************/
400
401
402 /**************************************************************************
403 * isd200_action
404 *
405 * Routine for sending commands to the isd200
406 *
407 * RETURNS:
408 * ISD status code
409 */
410 static int isd200_action( struct us_data *us, int action,
411 void* pointer, int value )
412 {
413 union ata_cdb ata;
414 struct scsi_device srb_dev;
415 struct isd200_info *info = (struct isd200_info *)us->extra;
416 struct scsi_cmnd *srb = &info->srb;
417 int status;
418
419 memset(&ata, 0, sizeof(ata));
420 memset(&srb_dev, 0, sizeof(srb_dev));
421 srb->device = &srb_dev;
422 ++srb->serial_number;
423
424 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
425 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
426 ata.generic.TransferBlockSize = 1;
427
428 switch ( action ) {
429 case ACTION_READ_STATUS:
430 US_DEBUGP(" isd200_action(READ_STATUS)\n");
431 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
432 ata.generic.RegisterSelect =
433 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
434 REG_STATUS | REG_ERROR;
435 srb->sc_data_direction = DMA_FROM_DEVICE;
436 srb->request_buffer = pointer;
437 srb->request_bufflen = value;
438 break;
439
440 case ACTION_ENUM:
441 US_DEBUGP(" isd200_action(ENUM,0x%02x)\n",value);
442 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
443 ACTION_SELECT_3|ACTION_SELECT_4|
444 ACTION_SELECT_5;
445 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
446 ata.write.DeviceHeadByte = value;
447 srb->sc_data_direction = DMA_NONE;
448 break;
449
450 case ACTION_RESET:
451 US_DEBUGP(" isd200_action(RESET)\n");
452 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
453 ACTION_SELECT_3|ACTION_SELECT_4;
454 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
455 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
456 srb->sc_data_direction = DMA_NONE;
457 break;
458
459 case ACTION_REENABLE:
460 US_DEBUGP(" isd200_action(REENABLE)\n");
461 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
462 ACTION_SELECT_3|ACTION_SELECT_4;
463 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
464 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
465 srb->sc_data_direction = DMA_NONE;
466 break;
467
468 case ACTION_SOFT_RESET:
469 US_DEBUGP(" isd200_action(SOFT_RESET)\n");
470 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
471 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
472 ata.write.DeviceHeadByte = info->DeviceHead;
473 ata.write.CommandByte = WIN_SRST;
474 srb->sc_data_direction = DMA_NONE;
475 break;
476
477 case ACTION_IDENTIFY:
478 US_DEBUGP(" isd200_action(IDENTIFY)\n");
479 ata.generic.RegisterSelect = REG_COMMAND;
480 ata.write.CommandByte = WIN_IDENTIFY;
481 srb->sc_data_direction = DMA_FROM_DEVICE;
482 srb->request_buffer = (void *) info->id;
483 srb->request_bufflen = sizeof(struct hd_driveid);
484 break;
485
486 default:
487 US_DEBUGP("Error: Undefined action %d\n",action);
488 break;
489 }
490
491 memcpy(srb->cmnd, &ata, sizeof(ata.generic));
492 srb->cmd_len = sizeof(ata.generic);
493 status = usb_stor_Bulk_transport(srb, us);
494 if (status == USB_STOR_TRANSPORT_GOOD)
495 status = ISD200_GOOD;
496 else {
497 US_DEBUGP(" isd200_action(0x%02x) error: %d\n",action,status);
498 status = ISD200_ERROR;
499 /* need to reset device here */
500 }
501
502 return status;
503 }
504
505 /**************************************************************************
506 * isd200_read_regs
507 *
508 * Read ATA Registers
509 *
510 * RETURNS:
511 * ISD status code
512 */
513 static int isd200_read_regs( struct us_data *us )
514 {
515 struct isd200_info *info = (struct isd200_info *)us->extra;
516 int retStatus = ISD200_GOOD;
517 int transferStatus;
518
519 US_DEBUGP("Entering isd200_IssueATAReadRegs\n");
520
521 transferStatus = isd200_action( us, ACTION_READ_STATUS,
522 info->RegsBuf, sizeof(info->ATARegs) );
523 if (transferStatus != ISD200_TRANSPORT_GOOD) {
524 US_DEBUGP(" Error reading ATA registers\n");
525 retStatus = ISD200_ERROR;
526 } else {
527 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
528 US_DEBUGP(" Got ATA Register[IDE_ERROR_OFFSET] = 0x%x\n",
529 info->ATARegs[IDE_ERROR_OFFSET]);
530 }
531
532 return retStatus;
533 }
534
535
536 /**************************************************************************
537 * Invoke the transport and basic error-handling/recovery methods
538 *
539 * This is used by the protocol layers to actually send the message to
540 * the device and receive the response.
541 */
542 static void isd200_invoke_transport( struct us_data *us,
543 struct scsi_cmnd *srb,
544 union ata_cdb *ataCdb )
545 {
546 int need_auto_sense = 0;
547 int transferStatus;
548 int result;
549
550 /* send the command to the transport layer */
551 memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
552 srb->cmd_len = sizeof(ataCdb->generic);
553 transferStatus = usb_stor_Bulk_transport(srb, us);
554
555 /* if the command gets aborted by the higher layers, we need to
556 * short-circuit all other processing
557 */
558 if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) {
559 US_DEBUGP("-- command was aborted\n");
560 goto Handle_Abort;
561 }
562
563 switch (transferStatus) {
564
565 case USB_STOR_TRANSPORT_GOOD:
566 /* Indicate a good result */
567 srb->result = SAM_STAT_GOOD;
568 break;
569
570 case USB_STOR_TRANSPORT_NO_SENSE:
571 US_DEBUGP("-- transport indicates protocol failure\n");
572 srb->result = SAM_STAT_CHECK_CONDITION;
573 return;
574
575 case USB_STOR_TRANSPORT_FAILED:
576 US_DEBUGP("-- transport indicates command failure\n");
577 need_auto_sense = 1;
578 break;
579
580 case USB_STOR_TRANSPORT_ERROR:
581 US_DEBUGP("-- transport indicates transport error\n");
582 srb->result = DID_ERROR << 16;
583 /* Need reset here */
584 return;
585
586 default:
587 US_DEBUGP("-- transport indicates unknown error\n");
588 srb->result = DID_ERROR << 16;
589 /* Need reset here */
590 return;
591 }
592
593 if ((srb->resid > 0) &&
594 !((srb->cmnd[0] == REQUEST_SENSE) ||
595 (srb->cmnd[0] == INQUIRY) ||
596 (srb->cmnd[0] == MODE_SENSE) ||
597 (srb->cmnd[0] == LOG_SENSE) ||
598 (srb->cmnd[0] == MODE_SENSE_10))) {
599 US_DEBUGP("-- unexpectedly short transfer\n");
600 need_auto_sense = 1;
601 }
602
603 if (need_auto_sense) {
604 result = isd200_read_regs(us);
605 if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) {
606 US_DEBUGP("-- auto-sense aborted\n");
607 goto Handle_Abort;
608 }
609 if (result == ISD200_GOOD) {
610 isd200_build_sense(us, srb);
611 srb->result = SAM_STAT_CHECK_CONDITION;
612
613 /* If things are really okay, then let's show that */
614 if ((srb->sense_buffer[2] & 0xf) == 0x0)
615 srb->result = SAM_STAT_GOOD;
616 } else {
617 srb->result = DID_ERROR << 16;
618 /* Need reset here */
619 }
620 }
621
622 /* Regardless of auto-sense, if we _know_ we have an error
623 * condition, show that in the result code
624 */
625 if (transferStatus == USB_STOR_TRANSPORT_FAILED)
626 srb->result = SAM_STAT_CHECK_CONDITION;
627 return;
628
629 /* abort processing: the bulk-only transport requires a reset
630 * following an abort */
631 Handle_Abort:
632 srb->result = DID_ABORT << 16;
633
634 /* permit the reset transfer to take place */
635 clear_bit(US_FLIDX_ABORTING, &us->flags);
636 /* Need reset here */
637 }
638
639 #ifdef CONFIG_USB_STORAGE_DEBUG
640 static void isd200_log_config( struct isd200_info* info )
641 {
642 US_DEBUGP(" Event Notification: 0x%x\n",
643 info->ConfigData.EventNotification);
644 US_DEBUGP(" External Clock: 0x%x\n",
645 info->ConfigData.ExternalClock);
646 US_DEBUGP(" ATA Init Timeout: 0x%x\n",
647 info->ConfigData.ATAInitTimeout);
648 US_DEBUGP(" ATAPI Command Block Size: 0x%x\n",
649 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
650 US_DEBUGP(" Master/Slave Selection: 0x%x\n",
651 info->ConfigData.ATAConfig & ATACFG_MASTER);
652 US_DEBUGP(" ATAPI Reset: 0x%x\n",
653 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
654 US_DEBUGP(" ATA Timing: 0x%x\n",
655 info->ConfigData.ATAConfig & ATACFG_TIMING);
656 US_DEBUGP(" ATA Major Command: 0x%x\n",
657 info->ConfigData.ATAMajorCommand);
658 US_DEBUGP(" ATA Minor Command: 0x%x\n",
659 info->ConfigData.ATAMinorCommand);
660 US_DEBUGP(" Init Status: 0x%x\n",
661 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
662 US_DEBUGP(" Config Descriptor 2: 0x%x\n",
663 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
664 US_DEBUGP(" Skip Device Boot: 0x%x\n",
665 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
666 US_DEBUGP(" ATA 3 State Supsend: 0x%x\n",
667 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
668 US_DEBUGP(" Descriptor Override: 0x%x\n",
669 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
670 US_DEBUGP(" Last LUN Identifier: 0x%x\n",
671 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
672 US_DEBUGP(" SRST Enable: 0x%x\n",
673 info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
674 }
675 #endif
676
677 /**************************************************************************
678 * isd200_write_config
679 *
680 * Write the ISD200 Configuration data
681 *
682 * RETURNS:
683 * ISD status code
684 */
685 static int isd200_write_config( struct us_data *us )
686 {
687 struct isd200_info *info = (struct isd200_info *)us->extra;
688 int retStatus = ISD200_GOOD;
689 int result;
690
691 #ifdef CONFIG_USB_STORAGE_DEBUG
692 US_DEBUGP("Entering isd200_write_config\n");
693 US_DEBUGP(" Writing the following ISD200 Config Data:\n");
694 isd200_log_config(info);
695 #endif
696
697 /* let's send the command via the control pipe */
698 result = usb_stor_ctrl_transfer(
699 us,
700 us->send_ctrl_pipe,
701 0x01,
702 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
703 0x0000,
704 0x0002,
705 (void *) &info->ConfigData,
706 sizeof(info->ConfigData));
707
708 if (result >= 0) {
709 US_DEBUGP(" ISD200 Config Data was written successfully\n");
710 } else {
711 US_DEBUGP(" Request to write ISD200 Config Data failed!\n");
712 retStatus = ISD200_ERROR;
713 }
714
715 US_DEBUGP("Leaving isd200_write_config %08X\n", retStatus);
716 return retStatus;
717 }
718
719
720 /**************************************************************************
721 * isd200_read_config
722 *
723 * Reads the ISD200 Configuration data
724 *
725 * RETURNS:
726 * ISD status code
727 */
728 static int isd200_read_config( struct us_data *us )
729 {
730 struct isd200_info *info = (struct isd200_info *)us->extra;
731 int retStatus = ISD200_GOOD;
732 int result;
733
734 US_DEBUGP("Entering isd200_read_config\n");
735
736 /* read the configuration information from ISD200. Use this to */
737 /* determine what the special ATA CDB bytes are. */
738
739 result = usb_stor_ctrl_transfer(
740 us,
741 us->recv_ctrl_pipe,
742 0x02,
743 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
744 0x0000,
745 0x0002,
746 (void *) &info->ConfigData,
747 sizeof(info->ConfigData));
748
749
750 if (result >= 0) {
751 US_DEBUGP(" Retrieved the following ISD200 Config Data:\n");
752 #ifdef CONFIG_USB_STORAGE_DEBUG
753 isd200_log_config(info);
754 #endif
755 } else {
756 US_DEBUGP(" Request to get ISD200 Config Data failed!\n");
757 retStatus = ISD200_ERROR;
758 }
759
760 US_DEBUGP("Leaving isd200_read_config %08X\n", retStatus);
761 return retStatus;
762 }
763
764
765 /**************************************************************************
766 * isd200_atapi_soft_reset
767 *
768 * Perform an Atapi Soft Reset on the device
769 *
770 * RETURNS:
771 * NT status code
772 */
773 static int isd200_atapi_soft_reset( struct us_data *us )
774 {
775 int retStatus = ISD200_GOOD;
776 int transferStatus;
777
778 US_DEBUGP("Entering isd200_atapi_soft_reset\n");
779
780 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
781 if (transferStatus != ISD200_TRANSPORT_GOOD) {
782 US_DEBUGP(" Error issuing Atapi Soft Reset\n");
783 retStatus = ISD200_ERROR;
784 }
785
786 US_DEBUGP("Leaving isd200_atapi_soft_reset %08X\n", retStatus);
787 return retStatus;
788 }
789
790
791 /**************************************************************************
792 * isd200_srst
793 *
794 * Perform an SRST on the device
795 *
796 * RETURNS:
797 * ISD status code
798 */
799 static int isd200_srst( struct us_data *us )
800 {
801 int retStatus = ISD200_GOOD;
802 int transferStatus;
803
804 US_DEBUGP("Entering isd200_SRST\n");
805
806 transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
807
808 /* check to see if this request failed */
809 if (transferStatus != ISD200_TRANSPORT_GOOD) {
810 US_DEBUGP(" Error issuing SRST\n");
811 retStatus = ISD200_ERROR;
812 } else {
813 /* delay 10ms to give the drive a chance to see it */
814 msleep(10);
815
816 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
817 if (transferStatus != ISD200_TRANSPORT_GOOD) {
818 US_DEBUGP(" Error taking drive out of reset\n");
819 retStatus = ISD200_ERROR;
820 } else {
821 /* delay 50ms to give the drive a chance to recover after SRST */
822 msleep(50);
823 }
824 }
825
826 US_DEBUGP("Leaving isd200_srst %08X\n", retStatus);
827 return retStatus;
828 }
829
830
831 /**************************************************************************
832 * isd200_try_enum
833 *
834 * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
835 * and tries to analyze the status registers
836 *
837 * RETURNS:
838 * ISD status code
839 */
840 static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
841 int detect )
842 {
843 int status = ISD200_GOOD;
844 unsigned long endTime;
845 struct isd200_info *info = (struct isd200_info *)us->extra;
846 unsigned char *regs = info->RegsBuf;
847 int recheckAsMaster = 0;
848
849 if ( detect )
850 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
851 else
852 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
853
854 /* loop until we detect !BSY or timeout */
855 while(1) {
856 #ifdef CONFIG_USB_STORAGE_DEBUG
857 char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ?
858 "Master" : "Slave";
859 #endif
860
861 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
862 if ( status != ISD200_GOOD )
863 break;
864
865 status = isd200_action( us, ACTION_READ_STATUS,
866 regs, 8 );
867 if ( status != ISD200_GOOD )
868 break;
869
870 if (!detect) {
871 if (regs[IDE_STATUS_OFFSET] & BUSY_STAT ) {
872 US_DEBUGP(" %s status is still BSY, try again...\n",mstr);
873 } else {
874 US_DEBUGP(" %s status !BSY, continue with next operation\n",mstr);
875 break;
876 }
877 }
878 /* check for BUSY_STAT and */
879 /* WRERR_STAT (workaround ATA Zip drive) and */
880 /* ERR_STAT (workaround for Archos CD-ROM) */
881 else if (regs[IDE_STATUS_OFFSET] &
882 (BUSY_STAT | WRERR_STAT | ERR_STAT )) {
883 US_DEBUGP(" Status indicates it is not ready, try again...\n");
884 }
885 /* check for DRDY, ATA devices set DRDY after SRST */
886 else if (regs[IDE_STATUS_OFFSET] & READY_STAT) {
887 US_DEBUGP(" Identified ATA device\n");
888 info->DeviceFlags |= DF_ATA_DEVICE;
889 info->DeviceHead = master_slave;
890 break;
891 }
892 /* check Cylinder High/Low to
893 determine if it is an ATAPI device
894 */
895 else if ((regs[IDE_HCYL_OFFSET] == 0xEB) &&
896 (regs[IDE_LCYL_OFFSET] == 0x14)) {
897 /* It seems that the RICOH
898 MP6200A CD/RW drive will
899 report itself okay as a
900 slave when it is really a
901 master. So this check again
902 as a master device just to
903 make sure it doesn't report
904 itself okay as a master also
905 */
906 if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
907 !recheckAsMaster) {
908 US_DEBUGP(" Identified ATAPI device as slave. Rechecking again as master\n");
909 recheckAsMaster = 1;
910 master_slave = ATA_ADDRESS_DEVHEAD_STD;
911 } else {
912 US_DEBUGP(" Identified ATAPI device\n");
913 info->DeviceHead = master_slave;
914
915 status = isd200_atapi_soft_reset(us);
916 break;
917 }
918 } else {
919 US_DEBUGP(" Not ATA, not ATAPI. Weird.\n");
920 break;
921 }
922
923 /* check for timeout on this request */
924 if (time_after_eq(jiffies, endTime)) {
925 if (!detect)
926 US_DEBUGP(" BSY check timeout, just continue with next operation...\n");
927 else
928 US_DEBUGP(" Device detect timeout!\n");
929 break;
930 }
931 }
932
933 return status;
934 }
935
936 /**************************************************************************
937 * isd200_manual_enum
938 *
939 * Determines if the drive attached is an ATA or ATAPI and if it is a
940 * master or slave.
941 *
942 * RETURNS:
943 * ISD status code
944 */
945 static int isd200_manual_enum(struct us_data *us)
946 {
947 struct isd200_info *info = (struct isd200_info *)us->extra;
948 int retStatus = ISD200_GOOD;
949
950 US_DEBUGP("Entering isd200_manual_enum\n");
951
952 retStatus = isd200_read_config(us);
953 if (retStatus == ISD200_GOOD) {
954 int isslave;
955 /* master or slave? */
956 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
957 if (retStatus == ISD200_GOOD)
958 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
959
960 if (retStatus == ISD200_GOOD) {
961 retStatus = isd200_srst(us);
962 if (retStatus == ISD200_GOOD)
963 /* ata or atapi? */
964 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
965 }
966
967 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
968 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
969 US_DEBUGP(" Setting Master/Slave selection to %d\n", isslave);
970 info->ConfigData.ATAConfig &= 0x3f;
971 info->ConfigData.ATAConfig |= (isslave<<6);
972 retStatus = isd200_write_config(us);
973 }
974 }
975
976 US_DEBUGP("Leaving isd200_manual_enum %08X\n", retStatus);
977 return(retStatus);
978 }
979
980
981 /**************************************************************************
982 * isd200_get_inquiry_data
983 *
984 * Get inquiry data
985 *
986 * RETURNS:
987 * ISD status code
988 */
989 static int isd200_get_inquiry_data( struct us_data *us )
990 {
991 struct isd200_info *info = (struct isd200_info *)us->extra;
992 int retStatus = ISD200_GOOD;
993 struct hd_driveid *id = info->id;
994
995 US_DEBUGP("Entering isd200_get_inquiry_data\n");
996
997 /* set default to Master */
998 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
999
1000 /* attempt to manually enumerate this device */
1001 retStatus = isd200_manual_enum(us);
1002 if (retStatus == ISD200_GOOD) {
1003 int transferStatus;
1004
1005 /* check for an ATA device */
1006 if (info->DeviceFlags & DF_ATA_DEVICE) {
1007 /* this must be an ATA device */
1008 /* perform an ATA Command Identify */
1009 transferStatus = isd200_action( us, ACTION_IDENTIFY,
1010 id,
1011 sizeof(struct hd_driveid) );
1012 if (transferStatus != ISD200_TRANSPORT_GOOD) {
1013 /* Error issuing ATA Command Identify */
1014 US_DEBUGP(" Error issuing ATA Command Identify\n");
1015 retStatus = ISD200_ERROR;
1016 } else {
1017 /* ATA Command Identify successful */
1018 int i;
1019 __be16 *src;
1020 __u16 *dest;
1021 ide_fix_driveid(id);
1022
1023 US_DEBUGP(" Identify Data Structure:\n");
1024 US_DEBUGP(" config = 0x%x\n", id->config);
1025 US_DEBUGP(" cyls = 0x%x\n", id->cyls);
1026 US_DEBUGP(" heads = 0x%x\n", id->heads);
1027 US_DEBUGP(" track_bytes = 0x%x\n", id->track_bytes);
1028 US_DEBUGP(" sector_bytes = 0x%x\n", id->sector_bytes);
1029 US_DEBUGP(" sectors = 0x%x\n", id->sectors);
1030 US_DEBUGP(" serial_no[0] = 0x%x\n", id->serial_no[0]);
1031 US_DEBUGP(" buf_type = 0x%x\n", id->buf_type);
1032 US_DEBUGP(" buf_size = 0x%x\n", id->buf_size);
1033 US_DEBUGP(" ecc_bytes = 0x%x\n", id->ecc_bytes);
1034 US_DEBUGP(" fw_rev[0] = 0x%x\n", id->fw_rev[0]);
1035 US_DEBUGP(" model[0] = 0x%x\n", id->model[0]);
1036 US_DEBUGP(" max_multsect = 0x%x\n", id->max_multsect);
1037 US_DEBUGP(" dword_io = 0x%x\n", id->dword_io);
1038 US_DEBUGP(" capability = 0x%x\n", id->capability);
1039 US_DEBUGP(" tPIO = 0x%x\n", id->tPIO);
1040 US_DEBUGP(" tDMA = 0x%x\n", id->tDMA);
1041 US_DEBUGP(" field_valid = 0x%x\n", id->field_valid);
1042 US_DEBUGP(" cur_cyls = 0x%x\n", id->cur_cyls);
1043 US_DEBUGP(" cur_heads = 0x%x\n", id->cur_heads);
1044 US_DEBUGP(" cur_sectors = 0x%x\n", id->cur_sectors);
1045 US_DEBUGP(" cur_capacity = 0x%x\n", (id->cur_capacity1 << 16) + id->cur_capacity0 );
1046 US_DEBUGP(" multsect = 0x%x\n", id->multsect);
1047 US_DEBUGP(" lba_capacity = 0x%x\n", id->lba_capacity);
1048 US_DEBUGP(" command_set_1 = 0x%x\n", id->command_set_1);
1049 US_DEBUGP(" command_set_2 = 0x%x\n", id->command_set_2);
1050
1051 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1052
1053 /* Standard IDE interface only supports disks */
1054 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1055
1056 /* The length must be at least 36 (5 + 31) */
1057 info->InquiryData.AdditionalLength = 0x1F;
1058
1059 if (id->command_set_1 & COMMANDSET_MEDIA_STATUS) {
1060 /* set the removable bit */
1061 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1062 info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1063 }
1064
1065 /* Fill in vendor identification fields */
1066 src = (__be16*)id->model;
1067 dest = (__u16*)info->InquiryData.VendorId;
1068 for (i=0;i<4;i++)
1069 dest[i] = be16_to_cpu(src[i]);
1070
1071 src = (__be16*)(id->model+8);
1072 dest = (__u16*)info->InquiryData.ProductId;
1073 for (i=0;i<8;i++)
1074 dest[i] = be16_to_cpu(src[i]);
1075
1076 src = (__be16*)id->fw_rev;
1077 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1078 for (i=0;i<2;i++)
1079 dest[i] = be16_to_cpu(src[i]);
1080
1081 /* determine if it supports Media Status Notification */
1082 if (id->command_set_2 & COMMANDSET_MEDIA_STATUS) {
1083 US_DEBUGP(" Device supports Media Status Notification\n");
1084
1085 /* Indicate that it is enabled, even though it is not
1086 * This allows the lock/unlock of the media to work
1087 * correctly.
1088 */
1089 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1090 }
1091 else
1092 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1093
1094 }
1095 } else {
1096 /*
1097 * this must be an ATAPI device
1098 * use an ATAPI protocol (Transparent SCSI)
1099 */
1100 us->protocol_name = "Transparent SCSI";
1101 us->proto_handler = usb_stor_transparent_scsi_command;
1102
1103 US_DEBUGP("Protocol changed to: %s\n", us->protocol_name);
1104
1105 /* Free driver structure */
1106 us->extra_destructor(info);
1107 us->extra = NULL;
1108 us->extra_destructor = NULL;
1109 }
1110 }
1111
1112 US_DEBUGP("Leaving isd200_get_inquiry_data %08X\n", retStatus);
1113
1114 return(retStatus);
1115 }
1116
1117
1118 /**************************************************************************
1119 * isd200_scsi_to_ata
1120 *
1121 * Translate SCSI commands to ATA commands.
1122 *
1123 * RETURNS:
1124 * 1 if the command needs to be sent to the transport layer
1125 * 0 otherwise
1126 */
1127 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1128 union ata_cdb * ataCdb)
1129 {
1130 struct isd200_info *info = (struct isd200_info *)us->extra;
1131 struct hd_driveid *id = info->id;
1132 int sendToTransport = 1;
1133 unsigned char sectnum, head;
1134 unsigned short cylinder;
1135 unsigned long lba;
1136 unsigned long blockCount;
1137 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1138
1139 memset(ataCdb, 0, sizeof(union ata_cdb));
1140
1141 /* SCSI Command */
1142 switch (srb->cmnd[0]) {
1143 case INQUIRY:
1144 US_DEBUGP(" ATA OUT - INQUIRY\n");
1145
1146 /* copy InquiryData */
1147 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1148 sizeof(info->InquiryData), srb);
1149 srb->result = SAM_STAT_GOOD;
1150 sendToTransport = 0;
1151 break;
1152
1153 case MODE_SENSE:
1154 US_DEBUGP(" ATA OUT - SCSIOP_MODE_SENSE\n");
1155
1156 /* Initialize the return buffer */
1157 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1158
1159 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1160 {
1161 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1162 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1163 ataCdb->generic.TransferBlockSize = 1;
1164 ataCdb->generic.RegisterSelect = REG_COMMAND;
1165 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1166 srb->request_bufflen = 0;
1167 } else {
1168 US_DEBUGP(" Media Status not supported, just report okay\n");
1169 srb->result = SAM_STAT_GOOD;
1170 sendToTransport = 0;
1171 }
1172 break;
1173
1174 case TEST_UNIT_READY:
1175 US_DEBUGP(" ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1176
1177 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1178 {
1179 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1180 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1181 ataCdb->generic.TransferBlockSize = 1;
1182 ataCdb->generic.RegisterSelect = REG_COMMAND;
1183 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1184 srb->request_bufflen = 0;
1185 } else {
1186 US_DEBUGP(" Media Status not supported, just report okay\n");
1187 srb->result = SAM_STAT_GOOD;
1188 sendToTransport = 0;
1189 }
1190 break;
1191
1192 case READ_CAPACITY:
1193 {
1194 unsigned long capacity;
1195 struct read_capacity_data readCapacityData;
1196
1197 US_DEBUGP(" ATA OUT - SCSIOP_READ_CAPACITY\n");
1198
1199 if (id->capability & CAPABILITY_LBA ) {
1200 capacity = id->lba_capacity - 1;
1201 } else {
1202 capacity = (id->heads *
1203 id->cyls *
1204 id->sectors) - 1;
1205 }
1206 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1207 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1208
1209 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1210 sizeof(readCapacityData), srb);
1211 srb->result = SAM_STAT_GOOD;
1212 sendToTransport = 0;
1213 }
1214 break;
1215
1216 case READ_10:
1217 US_DEBUGP(" ATA OUT - SCSIOP_READ\n");
1218
1219 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1220 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1221
1222 if (id->capability & CAPABILITY_LBA) {
1223 sectnum = (unsigned char)(lba);
1224 cylinder = (unsigned short)(lba>>8);
1225 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1226 } else {
1227 sectnum = (unsigned char)((lba % id->sectors) + 1);
1228 cylinder = (unsigned short)(lba / (id->sectors *
1229 id->heads));
1230 head = (unsigned char)((lba / id->sectors) %
1231 id->heads);
1232 }
1233 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1234 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1235 ataCdb->generic.TransferBlockSize = 1;
1236 ataCdb->generic.RegisterSelect =
1237 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1238 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1239 REG_DEVICE_HEAD | REG_COMMAND;
1240 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1241 ataCdb->write.SectorNumberByte = sectnum;
1242 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1243 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1244 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1245 ataCdb->write.CommandByte = WIN_READ;
1246 break;
1247
1248 case WRITE_10:
1249 US_DEBUGP(" ATA OUT - SCSIOP_WRITE\n");
1250
1251 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1252 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1253
1254 if (id->capability & CAPABILITY_LBA) {
1255 sectnum = (unsigned char)(lba);
1256 cylinder = (unsigned short)(lba>>8);
1257 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1258 } else {
1259 sectnum = (unsigned char)((lba % id->sectors) + 1);
1260 cylinder = (unsigned short)(lba / (id->sectors * id->heads));
1261 head = (unsigned char)((lba / id->sectors) % id->heads);
1262 }
1263 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1264 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1265 ataCdb->generic.TransferBlockSize = 1;
1266 ataCdb->generic.RegisterSelect =
1267 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1268 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1269 REG_DEVICE_HEAD | REG_COMMAND;
1270 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1271 ataCdb->write.SectorNumberByte = sectnum;
1272 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1273 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1274 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1275 ataCdb->write.CommandByte = WIN_WRITE;
1276 break;
1277
1278 case ALLOW_MEDIUM_REMOVAL:
1279 US_DEBUGP(" ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1280
1281 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1282 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1283
1284 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1285 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1286 ataCdb->generic.TransferBlockSize = 1;
1287 ataCdb->generic.RegisterSelect = REG_COMMAND;
1288 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1289 WIN_DOORLOCK : WIN_DOORUNLOCK;
1290 srb->request_bufflen = 0;
1291 } else {
1292 US_DEBUGP(" Not removeable media, just report okay\n");
1293 srb->result = SAM_STAT_GOOD;
1294 sendToTransport = 0;
1295 }
1296 break;
1297
1298 case START_STOP:
1299 US_DEBUGP(" ATA OUT - SCSIOP_START_STOP_UNIT\n");
1300 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1301
1302 if ((srb->cmnd[4] & 0x3) == 0x2) {
1303 US_DEBUGP(" Media Eject\n");
1304 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1305 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1306 ataCdb->generic.TransferBlockSize = 0;
1307 ataCdb->generic.RegisterSelect = REG_COMMAND;
1308 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1309 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1310 US_DEBUGP(" Get Media Status\n");
1311 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1312 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1313 ataCdb->generic.TransferBlockSize = 1;
1314 ataCdb->generic.RegisterSelect = REG_COMMAND;
1315 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1316 srb->request_bufflen = 0;
1317 } else {
1318 US_DEBUGP(" Nothing to do, just report okay\n");
1319 srb->result = SAM_STAT_GOOD;
1320 sendToTransport = 0;
1321 }
1322 break;
1323
1324 default:
1325 US_DEBUGP("Unsupported SCSI command - 0x%X\n", srb->cmnd[0]);
1326 srb->result = DID_ERROR << 16;
1327 sendToTransport = 0;
1328 break;
1329 }
1330
1331 return(sendToTransport);
1332 }
1333
1334
1335 /**************************************************************************
1336 * isd200_free_info
1337 *
1338 * Frees the driver structure.
1339 */
1340 static void isd200_free_info_ptrs(void *info_)
1341 {
1342 struct isd200_info *info = (struct isd200_info *) info_;
1343
1344 if (info) {
1345 kfree(info->id);
1346 kfree(info->RegsBuf);
1347 }
1348 }
1349
1350 /**************************************************************************
1351 * isd200_init_info
1352 *
1353 * Allocates (if necessary) and initializes the driver structure.
1354 *
1355 * RETURNS:
1356 * ISD status code
1357 */
1358 static int isd200_init_info(struct us_data *us)
1359 {
1360 int retStatus = ISD200_GOOD;
1361 struct isd200_info *info;
1362
1363 info = (struct isd200_info *)
1364 kmalloc(sizeof(struct isd200_info), GFP_KERNEL);
1365 if (!info)
1366 retStatus = ISD200_ERROR;
1367 else {
1368 memset(info, 0, sizeof(struct isd200_info));
1369 info->id = (struct hd_driveid *)
1370 kmalloc(sizeof(struct hd_driveid), GFP_KERNEL);
1371 info->RegsBuf = (unsigned char *)
1372 kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1373 if (!info->id || !info->RegsBuf) {
1374 isd200_free_info_ptrs(info);
1375 kfree(info);
1376 retStatus = ISD200_ERROR;
1377 } else
1378 memset(info->id, 0, sizeof(struct hd_driveid));
1379 }
1380
1381 if (retStatus == ISD200_GOOD) {
1382 us->extra = info;
1383 us->extra_destructor = isd200_free_info_ptrs;
1384 } else
1385 US_DEBUGP("ERROR - kmalloc failure\n");
1386
1387 return(retStatus);
1388 }
1389
1390 /**************************************************************************
1391 * Initialization for the ISD200
1392 */
1393
1394 int isd200_Initialization(struct us_data *us)
1395 {
1396 US_DEBUGP("ISD200 Initialization...\n");
1397
1398 /* Initialize ISD200 info struct */
1399
1400 if (isd200_init_info(us) == ISD200_ERROR) {
1401 US_DEBUGP("ERROR Initializing ISD200 Info struct\n");
1402 } else {
1403 /* Get device specific data */
1404
1405 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1406 US_DEBUGP("ISD200 Initialization Failure\n");
1407 else
1408 US_DEBUGP("ISD200 Initialization complete\n");
1409 }
1410
1411 return 0;
1412 }
1413
1414
1415 /**************************************************************************
1416 * Protocol and Transport for the ISD200 ASIC
1417 *
1418 * This protocol and transport are for ATA devices connected to an ISD200
1419 * ASIC. An ATAPI device that is conected as a slave device will be
1420 * detected in the driver initialization function and the protocol will
1421 * be changed to an ATAPI protocol (Transparent SCSI).
1422 *
1423 */
1424
1425 void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1426 {
1427 int sendToTransport = 1;
1428 union ata_cdb ataCdb;
1429
1430 /* Make sure driver was initialized */
1431
1432 if (us->extra == NULL)
1433 US_DEBUGP("ERROR Driver not initialized\n");
1434
1435 /* Convert command */
1436 srb->resid = 0;
1437 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1438
1439 /* send the command to the transport layer */
1440 if (sendToTransport)
1441 isd200_invoke_transport(us, srb, &ataCdb);
1442 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree