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Merge tag 'for-linus-20170825' of git://git.infradead.org/linux-mtd
[mirror_ubuntu-artful-kernel.git] / drivers / usb / storage / isd200.c
1 /*
2 * Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
3 *
4 * Current development and maintenance:
5 * (C) 2001-2002 Björn Stenberg (bjorn@haxx.se)
6 *
7 * Developed with the assistance of:
8 * (C) 2002 Alan Stern <stern@rowland.org>
9 *
10 * Initial work:
11 * (C) 2000 In-System Design, Inc. (support@in-system.com)
12 *
13 * The ISD200 ASIC does not natively support ATA devices. The chip
14 * does implement an interface, the ATA Command Block (ATACB) which provides
15 * a means of passing ATA commands and ATA register accesses to a device.
16 *
17 * This program is free software; you can redistribute it and/or modify it
18 * under the terms of the GNU General Public License as published by the
19 * Free Software Foundation; either version 2, or (at your option) any
20 * later version.
21 *
22 * This program is distributed in the hope that it will be useful, but
23 * WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 * General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public License along
28 * with this program; if not, write to the Free Software Foundation, Inc.,
29 * 675 Mass Ave, Cambridge, MA 02139, USA.
30 *
31 * History:
32 *
33 * 2002-10-19: Removed the specialized transfer routines.
34 * (Alan Stern <stern@rowland.harvard.edu>)
35 * 2001-02-24: Removed lots of duplicate code and simplified the structure.
36 * (bjorn@haxx.se)
37 * 2002-01-16: Fixed endianness bug so it works on the ppc arch.
38 * (Luc Saillard <luc@saillard.org>)
39 * 2002-01-17: All bitfields removed.
40 * (bjorn@haxx.se)
41 */
42
43
44 /* Include files */
45
46 #include <linux/jiffies.h>
47 #include <linux/errno.h>
48 #include <linux/module.h>
49 #include <linux/slab.h>
50 #include <linux/ata.h>
51 #include <linux/hdreg.h>
52 #include <linux/scatterlist.h>
53
54 #include <scsi/scsi.h>
55 #include <scsi/scsi_cmnd.h>
56 #include <scsi/scsi_device.h>
57
58 #include "usb.h"
59 #include "transport.h"
60 #include "protocol.h"
61 #include "debug.h"
62 #include "scsiglue.h"
63
64 #define DRV_NAME "ums-isd200"
65
66 MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
67 MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>");
68 MODULE_LICENSE("GPL");
69
70 static int isd200_Initialization(struct us_data *us);
71
72
73 /*
74 * The table of devices
75 */
76 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
77 vendorName, productName, useProtocol, useTransport, \
78 initFunction, flags) \
79 { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
80 .driver_info = (flags) }
81
82 static struct usb_device_id isd200_usb_ids[] = {
83 # include "unusual_isd200.h"
84 { } /* Terminating entry */
85 };
86 MODULE_DEVICE_TABLE(usb, isd200_usb_ids);
87
88 #undef UNUSUAL_DEV
89
90 /*
91 * The flags table
92 */
93 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
94 vendor_name, product_name, use_protocol, use_transport, \
95 init_function, Flags) \
96 { \
97 .vendorName = vendor_name, \
98 .productName = product_name, \
99 .useProtocol = use_protocol, \
100 .useTransport = use_transport, \
101 .initFunction = init_function, \
102 }
103
104 static struct us_unusual_dev isd200_unusual_dev_list[] = {
105 # include "unusual_isd200.h"
106 { } /* Terminating entry */
107 };
108
109 #undef UNUSUAL_DEV
110
111 /* Timeout defines (in Seconds) */
112
113 #define ISD200_ENUM_BSY_TIMEOUT 35
114 #define ISD200_ENUM_DETECT_TIMEOUT 30
115 #define ISD200_DEFAULT_TIMEOUT 30
116
117 /* device flags */
118 #define DF_ATA_DEVICE 0x0001
119 #define DF_MEDIA_STATUS_ENABLED 0x0002
120 #define DF_REMOVABLE_MEDIA 0x0004
121
122 /* capability bit definitions */
123 #define CAPABILITY_DMA 0x01
124 #define CAPABILITY_LBA 0x02
125
126 /* command_setX bit definitions */
127 #define COMMANDSET_REMOVABLE 0x02
128 #define COMMANDSET_MEDIA_STATUS 0x10
129
130 /* ATA Vendor Specific defines */
131 #define ATA_ADDRESS_DEVHEAD_STD 0xa0
132 #define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
133 #define ATA_ADDRESS_DEVHEAD_SLAVE 0x10
134
135 /* Action Select bits */
136 #define ACTION_SELECT_0 0x01
137 #define ACTION_SELECT_1 0x02
138 #define ACTION_SELECT_2 0x04
139 #define ACTION_SELECT_3 0x08
140 #define ACTION_SELECT_4 0x10
141 #define ACTION_SELECT_5 0x20
142 #define ACTION_SELECT_6 0x40
143 #define ACTION_SELECT_7 0x80
144
145 /* Register Select bits */
146 #define REG_ALTERNATE_STATUS 0x01
147 #define REG_DEVICE_CONTROL 0x01
148 #define REG_ERROR 0x02
149 #define REG_FEATURES 0x02
150 #define REG_SECTOR_COUNT 0x04
151 #define REG_SECTOR_NUMBER 0x08
152 #define REG_CYLINDER_LOW 0x10
153 #define REG_CYLINDER_HIGH 0x20
154 #define REG_DEVICE_HEAD 0x40
155 #define REG_STATUS 0x80
156 #define REG_COMMAND 0x80
157
158 /* ATA registers offset definitions */
159 #define ATA_REG_ERROR_OFFSET 1
160 #define ATA_REG_LCYL_OFFSET 4
161 #define ATA_REG_HCYL_OFFSET 5
162 #define ATA_REG_STATUS_OFFSET 7
163
164 /* ATA error definitions not in <linux/hdreg.h> */
165 #define ATA_ERROR_MEDIA_CHANGE 0x20
166
167 /* ATA command definitions not in <linux/hdreg.h> */
168 #define ATA_COMMAND_GET_MEDIA_STATUS 0xDA
169 #define ATA_COMMAND_MEDIA_EJECT 0xED
170
171 /* ATA drive control definitions */
172 #define ATA_DC_DISABLE_INTERRUPTS 0x02
173 #define ATA_DC_RESET_CONTROLLER 0x04
174 #define ATA_DC_REENABLE_CONTROLLER 0x00
175
176 /*
177 * General purpose return codes
178 */
179
180 #define ISD200_ERROR -1
181 #define ISD200_GOOD 0
182
183 /*
184 * Transport return codes
185 */
186
187 #define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */
188 #define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */
189 #define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
190
191 /* driver action codes */
192 #define ACTION_READ_STATUS 0
193 #define ACTION_RESET 1
194 #define ACTION_REENABLE 2
195 #define ACTION_SOFT_RESET 3
196 #define ACTION_ENUM 4
197 #define ACTION_IDENTIFY 5
198
199
200 /*
201 * ata_cdb struct
202 */
203
204
205 union ata_cdb {
206 struct {
207 unsigned char SignatureByte0;
208 unsigned char SignatureByte1;
209 unsigned char ActionSelect;
210 unsigned char RegisterSelect;
211 unsigned char TransferBlockSize;
212 unsigned char WriteData3F6;
213 unsigned char WriteData1F1;
214 unsigned char WriteData1F2;
215 unsigned char WriteData1F3;
216 unsigned char WriteData1F4;
217 unsigned char WriteData1F5;
218 unsigned char WriteData1F6;
219 unsigned char WriteData1F7;
220 unsigned char Reserved[3];
221 } generic;
222
223 struct {
224 unsigned char SignatureByte0;
225 unsigned char SignatureByte1;
226 unsigned char ActionSelect;
227 unsigned char RegisterSelect;
228 unsigned char TransferBlockSize;
229 unsigned char AlternateStatusByte;
230 unsigned char ErrorByte;
231 unsigned char SectorCountByte;
232 unsigned char SectorNumberByte;
233 unsigned char CylinderLowByte;
234 unsigned char CylinderHighByte;
235 unsigned char DeviceHeadByte;
236 unsigned char StatusByte;
237 unsigned char Reserved[3];
238 } read;
239
240 struct {
241 unsigned char SignatureByte0;
242 unsigned char SignatureByte1;
243 unsigned char ActionSelect;
244 unsigned char RegisterSelect;
245 unsigned char TransferBlockSize;
246 unsigned char DeviceControlByte;
247 unsigned char FeaturesByte;
248 unsigned char SectorCountByte;
249 unsigned char SectorNumberByte;
250 unsigned char CylinderLowByte;
251 unsigned char CylinderHighByte;
252 unsigned char DeviceHeadByte;
253 unsigned char CommandByte;
254 unsigned char Reserved[3];
255 } write;
256 };
257
258
259 /*
260 * Inquiry data structure. This is the data returned from the target
261 * after it receives an inquiry.
262 *
263 * This structure may be extended by the number of bytes specified
264 * in the field AdditionalLength. The defined size constant only
265 * includes fields through ProductRevisionLevel.
266 */
267
268 /*
269 * DeviceType field
270 */
271 #define DIRECT_ACCESS_DEVICE 0x00 /* disks */
272 #define DEVICE_REMOVABLE 0x80
273
274 struct inquiry_data {
275 unsigned char DeviceType;
276 unsigned char DeviceTypeModifier;
277 unsigned char Versions;
278 unsigned char Format;
279 unsigned char AdditionalLength;
280 unsigned char Reserved[2];
281 unsigned char Capability;
282 unsigned char VendorId[8];
283 unsigned char ProductId[16];
284 unsigned char ProductRevisionLevel[4];
285 unsigned char VendorSpecific[20];
286 unsigned char Reserved3[40];
287 } __attribute__ ((packed));
288
289 /*
290 * INQUIRY data buffer size
291 */
292
293 #define INQUIRYDATABUFFERSIZE 36
294
295
296 /*
297 * ISD200 CONFIG data struct
298 */
299
300 #define ATACFG_TIMING 0x0f
301 #define ATACFG_ATAPI_RESET 0x10
302 #define ATACFG_MASTER 0x20
303 #define ATACFG_BLOCKSIZE 0xa0
304
305 #define ATACFGE_LAST_LUN 0x07
306 #define ATACFGE_DESC_OVERRIDE 0x08
307 #define ATACFGE_STATE_SUSPEND 0x10
308 #define ATACFGE_SKIP_BOOT 0x20
309 #define ATACFGE_CONF_DESC2 0x40
310 #define ATACFGE_INIT_STATUS 0x80
311
312 #define CFG_CAPABILITY_SRST 0x01
313
314 struct isd200_config {
315 unsigned char EventNotification;
316 unsigned char ExternalClock;
317 unsigned char ATAInitTimeout;
318 unsigned char ATAConfig;
319 unsigned char ATAMajorCommand;
320 unsigned char ATAMinorCommand;
321 unsigned char ATAExtraConfig;
322 unsigned char Capability;
323 }__attribute__ ((packed));
324
325
326 /*
327 * ISD200 driver information struct
328 */
329
330 struct isd200_info {
331 struct inquiry_data InquiryData;
332 u16 *id;
333 struct isd200_config ConfigData;
334 unsigned char *RegsBuf;
335 unsigned char ATARegs[8];
336 unsigned char DeviceHead;
337 unsigned char DeviceFlags;
338
339 /* maximum number of LUNs supported */
340 unsigned char MaxLUNs;
341 unsigned char cmnd[BLK_MAX_CDB];
342 struct scsi_cmnd srb;
343 struct scatterlist sg;
344 };
345
346
347 /*
348 * Read Capacity Data - returned in Big Endian format
349 */
350
351 struct read_capacity_data {
352 __be32 LogicalBlockAddress;
353 __be32 BytesPerBlock;
354 };
355
356 /*
357 * Read Block Limits Data - returned in Big Endian format
358 * This structure returns the maximum and minimum block
359 * size for a TAPE device.
360 */
361
362 struct read_block_limits {
363 unsigned char Reserved;
364 unsigned char BlockMaximumSize[3];
365 unsigned char BlockMinimumSize[2];
366 };
367
368
369 /*
370 * Sense Data Format
371 */
372
373 #define SENSE_ERRCODE 0x7f
374 #define SENSE_ERRCODE_VALID 0x80
375 #define SENSE_FLAG_SENSE_KEY 0x0f
376 #define SENSE_FLAG_BAD_LENGTH 0x20
377 #define SENSE_FLAG_END_OF_MEDIA 0x40
378 #define SENSE_FLAG_FILE_MARK 0x80
379 struct sense_data {
380 unsigned char ErrorCode;
381 unsigned char SegmentNumber;
382 unsigned char Flags;
383 unsigned char Information[4];
384 unsigned char AdditionalSenseLength;
385 unsigned char CommandSpecificInformation[4];
386 unsigned char AdditionalSenseCode;
387 unsigned char AdditionalSenseCodeQualifier;
388 unsigned char FieldReplaceableUnitCode;
389 unsigned char SenseKeySpecific[3];
390 } __attribute__ ((packed));
391
392 /*
393 * Default request sense buffer size
394 */
395
396 #define SENSE_BUFFER_SIZE 18
397
398 /***********************************************************************
399 * Helper routines
400 ***********************************************************************/
401
402 /**************************************************************************
403 * isd200_build_sense
404 *
405 * Builds an artificial sense buffer to report the results of a
406 * failed command.
407 *
408 * RETURNS:
409 * void
410 */
411 static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
412 {
413 struct isd200_info *info = (struct isd200_info *)us->extra;
414 struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
415 unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET];
416
417 if(error & ATA_ERROR_MEDIA_CHANGE) {
418 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
419 buf->AdditionalSenseLength = 0xb;
420 buf->Flags = UNIT_ATTENTION;
421 buf->AdditionalSenseCode = 0;
422 buf->AdditionalSenseCodeQualifier = 0;
423 } else if (error & ATA_MCR) {
424 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
425 buf->AdditionalSenseLength = 0xb;
426 buf->Flags = UNIT_ATTENTION;
427 buf->AdditionalSenseCode = 0;
428 buf->AdditionalSenseCodeQualifier = 0;
429 } else if (error & ATA_TRK0NF) {
430 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
431 buf->AdditionalSenseLength = 0xb;
432 buf->Flags = NOT_READY;
433 buf->AdditionalSenseCode = 0;
434 buf->AdditionalSenseCodeQualifier = 0;
435 } else if (error & ATA_UNC) {
436 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
437 buf->AdditionalSenseLength = 0xb;
438 buf->Flags = DATA_PROTECT;
439 buf->AdditionalSenseCode = 0;
440 buf->AdditionalSenseCodeQualifier = 0;
441 } else {
442 buf->ErrorCode = 0;
443 buf->AdditionalSenseLength = 0;
444 buf->Flags = 0;
445 buf->AdditionalSenseCode = 0;
446 buf->AdditionalSenseCodeQualifier = 0;
447 }
448 }
449
450
451 /***********************************************************************
452 * Transport routines
453 ***********************************************************************/
454
455 /**************************************************************************
456 * isd200_set_srb(), isd200_srb_set_bufflen()
457 *
458 * Two helpers to facilitate in initialization of scsi_cmnd structure
459 * Will need to change when struct scsi_cmnd changes
460 */
461 static void isd200_set_srb(struct isd200_info *info,
462 enum dma_data_direction dir, void* buff, unsigned bufflen)
463 {
464 struct scsi_cmnd *srb = &info->srb;
465
466 if (buff)
467 sg_init_one(&info->sg, buff, bufflen);
468
469 srb->sc_data_direction = dir;
470 srb->sdb.table.sgl = buff ? &info->sg : NULL;
471 srb->sdb.length = bufflen;
472 srb->sdb.table.nents = buff ? 1 : 0;
473 }
474
475 static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen)
476 {
477 srb->sdb.length = bufflen;
478 }
479
480
481 /**************************************************************************
482 * isd200_action
483 *
484 * Routine for sending commands to the isd200
485 *
486 * RETURNS:
487 * ISD status code
488 */
489 static int isd200_action( struct us_data *us, int action,
490 void* pointer, int value )
491 {
492 union ata_cdb ata;
493 /* static to prevent this large struct being placed on the valuable stack */
494 static struct scsi_device srb_dev;
495 struct isd200_info *info = (struct isd200_info *)us->extra;
496 struct scsi_cmnd *srb = &info->srb;
497 int status;
498
499 memset(&ata, 0, sizeof(ata));
500 srb->cmnd = info->cmnd;
501 srb->device = &srb_dev;
502
503 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
504 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
505 ata.generic.TransferBlockSize = 1;
506
507 switch ( action ) {
508 case ACTION_READ_STATUS:
509 usb_stor_dbg(us, " isd200_action(READ_STATUS)\n");
510 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
511 ata.generic.RegisterSelect =
512 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
513 REG_STATUS | REG_ERROR;
514 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
515 break;
516
517 case ACTION_ENUM:
518 usb_stor_dbg(us, " isd200_action(ENUM,0x%02x)\n", value);
519 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
520 ACTION_SELECT_3|ACTION_SELECT_4|
521 ACTION_SELECT_5;
522 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
523 ata.write.DeviceHeadByte = value;
524 isd200_set_srb(info, DMA_NONE, NULL, 0);
525 break;
526
527 case ACTION_RESET:
528 usb_stor_dbg(us, " isd200_action(RESET)\n");
529 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
530 ACTION_SELECT_3|ACTION_SELECT_4;
531 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
532 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
533 isd200_set_srb(info, DMA_NONE, NULL, 0);
534 break;
535
536 case ACTION_REENABLE:
537 usb_stor_dbg(us, " isd200_action(REENABLE)\n");
538 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
539 ACTION_SELECT_3|ACTION_SELECT_4;
540 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
541 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
542 isd200_set_srb(info, DMA_NONE, NULL, 0);
543 break;
544
545 case ACTION_SOFT_RESET:
546 usb_stor_dbg(us, " isd200_action(SOFT_RESET)\n");
547 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
548 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
549 ata.write.DeviceHeadByte = info->DeviceHead;
550 ata.write.CommandByte = ATA_CMD_DEV_RESET;
551 isd200_set_srb(info, DMA_NONE, NULL, 0);
552 break;
553
554 case ACTION_IDENTIFY:
555 usb_stor_dbg(us, " isd200_action(IDENTIFY)\n");
556 ata.generic.RegisterSelect = REG_COMMAND;
557 ata.write.CommandByte = ATA_CMD_ID_ATA;
558 isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
559 ATA_ID_WORDS * 2);
560 break;
561
562 default:
563 usb_stor_dbg(us, "Error: Undefined action %d\n", action);
564 return ISD200_ERROR;
565 }
566
567 memcpy(srb->cmnd, &ata, sizeof(ata.generic));
568 srb->cmd_len = sizeof(ata.generic);
569 status = usb_stor_Bulk_transport(srb, us);
570 if (status == USB_STOR_TRANSPORT_GOOD)
571 status = ISD200_GOOD;
572 else {
573 usb_stor_dbg(us, " isd200_action(0x%02x) error: %d\n",
574 action, status);
575 status = ISD200_ERROR;
576 /* need to reset device here */
577 }
578
579 return status;
580 }
581
582 /**************************************************************************
583 * isd200_read_regs
584 *
585 * Read ATA Registers
586 *
587 * RETURNS:
588 * ISD status code
589 */
590 static int isd200_read_regs( struct us_data *us )
591 {
592 struct isd200_info *info = (struct isd200_info *)us->extra;
593 int retStatus = ISD200_GOOD;
594 int transferStatus;
595
596 usb_stor_dbg(us, "Entering isd200_IssueATAReadRegs\n");
597
598 transferStatus = isd200_action( us, ACTION_READ_STATUS,
599 info->RegsBuf, sizeof(info->ATARegs) );
600 if (transferStatus != ISD200_TRANSPORT_GOOD) {
601 usb_stor_dbg(us, " Error reading ATA registers\n");
602 retStatus = ISD200_ERROR;
603 } else {
604 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
605 usb_stor_dbg(us, " Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n",
606 info->ATARegs[ATA_REG_ERROR_OFFSET]);
607 }
608
609 return retStatus;
610 }
611
612
613 /**************************************************************************
614 * Invoke the transport and basic error-handling/recovery methods
615 *
616 * This is used by the protocol layers to actually send the message to
617 * the device and receive the response.
618 */
619 static void isd200_invoke_transport( struct us_data *us,
620 struct scsi_cmnd *srb,
621 union ata_cdb *ataCdb )
622 {
623 int need_auto_sense = 0;
624 int transferStatus;
625 int result;
626
627 /* send the command to the transport layer */
628 memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
629 srb->cmd_len = sizeof(ataCdb->generic);
630 transferStatus = usb_stor_Bulk_transport(srb, us);
631
632 /*
633 * if the command gets aborted by the higher layers, we need to
634 * short-circuit all other processing
635 */
636 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
637 usb_stor_dbg(us, "-- command was aborted\n");
638 goto Handle_Abort;
639 }
640
641 switch (transferStatus) {
642
643 case USB_STOR_TRANSPORT_GOOD:
644 /* Indicate a good result */
645 srb->result = SAM_STAT_GOOD;
646 break;
647
648 case USB_STOR_TRANSPORT_NO_SENSE:
649 usb_stor_dbg(us, "-- transport indicates protocol failure\n");
650 srb->result = SAM_STAT_CHECK_CONDITION;
651 return;
652
653 case USB_STOR_TRANSPORT_FAILED:
654 usb_stor_dbg(us, "-- transport indicates command failure\n");
655 need_auto_sense = 1;
656 break;
657
658 case USB_STOR_TRANSPORT_ERROR:
659 usb_stor_dbg(us, "-- transport indicates transport error\n");
660 srb->result = DID_ERROR << 16;
661 /* Need reset here */
662 return;
663
664 default:
665 usb_stor_dbg(us, "-- transport indicates unknown error\n");
666 srb->result = DID_ERROR << 16;
667 /* Need reset here */
668 return;
669 }
670
671 if ((scsi_get_resid(srb) > 0) &&
672 !((srb->cmnd[0] == REQUEST_SENSE) ||
673 (srb->cmnd[0] == INQUIRY) ||
674 (srb->cmnd[0] == MODE_SENSE) ||
675 (srb->cmnd[0] == LOG_SENSE) ||
676 (srb->cmnd[0] == MODE_SENSE_10))) {
677 usb_stor_dbg(us, "-- unexpectedly short transfer\n");
678 need_auto_sense = 1;
679 }
680
681 if (need_auto_sense) {
682 result = isd200_read_regs(us);
683 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
684 usb_stor_dbg(us, "-- auto-sense aborted\n");
685 goto Handle_Abort;
686 }
687 if (result == ISD200_GOOD) {
688 isd200_build_sense(us, srb);
689 srb->result = SAM_STAT_CHECK_CONDITION;
690
691 /* If things are really okay, then let's show that */
692 if ((srb->sense_buffer[2] & 0xf) == 0x0)
693 srb->result = SAM_STAT_GOOD;
694 } else {
695 srb->result = DID_ERROR << 16;
696 /* Need reset here */
697 }
698 }
699
700 /*
701 * Regardless of auto-sense, if we _know_ we have an error
702 * condition, show that in the result code
703 */
704 if (transferStatus == USB_STOR_TRANSPORT_FAILED)
705 srb->result = SAM_STAT_CHECK_CONDITION;
706 return;
707
708 /*
709 * abort processing: the bulk-only transport requires a reset
710 * following an abort
711 */
712 Handle_Abort:
713 srb->result = DID_ABORT << 16;
714
715 /* permit the reset transfer to take place */
716 clear_bit(US_FLIDX_ABORTING, &us->dflags);
717 /* Need reset here */
718 }
719
720 #ifdef CONFIG_USB_STORAGE_DEBUG
721 static void isd200_log_config(struct us_data *us, struct isd200_info *info)
722 {
723 usb_stor_dbg(us, " Event Notification: 0x%x\n",
724 info->ConfigData.EventNotification);
725 usb_stor_dbg(us, " External Clock: 0x%x\n",
726 info->ConfigData.ExternalClock);
727 usb_stor_dbg(us, " ATA Init Timeout: 0x%x\n",
728 info->ConfigData.ATAInitTimeout);
729 usb_stor_dbg(us, " ATAPI Command Block Size: 0x%x\n",
730 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
731 usb_stor_dbg(us, " Master/Slave Selection: 0x%x\n",
732 info->ConfigData.ATAConfig & ATACFG_MASTER);
733 usb_stor_dbg(us, " ATAPI Reset: 0x%x\n",
734 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
735 usb_stor_dbg(us, " ATA Timing: 0x%x\n",
736 info->ConfigData.ATAConfig & ATACFG_TIMING);
737 usb_stor_dbg(us, " ATA Major Command: 0x%x\n",
738 info->ConfigData.ATAMajorCommand);
739 usb_stor_dbg(us, " ATA Minor Command: 0x%x\n",
740 info->ConfigData.ATAMinorCommand);
741 usb_stor_dbg(us, " Init Status: 0x%x\n",
742 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
743 usb_stor_dbg(us, " Config Descriptor 2: 0x%x\n",
744 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
745 usb_stor_dbg(us, " Skip Device Boot: 0x%x\n",
746 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
747 usb_stor_dbg(us, " ATA 3 State Suspend: 0x%x\n",
748 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
749 usb_stor_dbg(us, " Descriptor Override: 0x%x\n",
750 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
751 usb_stor_dbg(us, " Last LUN Identifier: 0x%x\n",
752 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
753 usb_stor_dbg(us, " SRST Enable: 0x%x\n",
754 info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
755 }
756 #endif
757
758 /**************************************************************************
759 * isd200_write_config
760 *
761 * Write the ISD200 Configuration data
762 *
763 * RETURNS:
764 * ISD status code
765 */
766 static int isd200_write_config( struct us_data *us )
767 {
768 struct isd200_info *info = (struct isd200_info *)us->extra;
769 int retStatus = ISD200_GOOD;
770 int result;
771
772 #ifdef CONFIG_USB_STORAGE_DEBUG
773 usb_stor_dbg(us, "Entering isd200_write_config\n");
774 usb_stor_dbg(us, " Writing the following ISD200 Config Data:\n");
775 isd200_log_config(us, info);
776 #endif
777
778 /* let's send the command via the control pipe */
779 result = usb_stor_ctrl_transfer(
780 us,
781 us->send_ctrl_pipe,
782 0x01,
783 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
784 0x0000,
785 0x0002,
786 (void *) &info->ConfigData,
787 sizeof(info->ConfigData));
788
789 if (result >= 0) {
790 usb_stor_dbg(us, " ISD200 Config Data was written successfully\n");
791 } else {
792 usb_stor_dbg(us, " Request to write ISD200 Config Data failed!\n");
793 retStatus = ISD200_ERROR;
794 }
795
796 usb_stor_dbg(us, "Leaving isd200_write_config %08X\n", retStatus);
797 return retStatus;
798 }
799
800
801 /**************************************************************************
802 * isd200_read_config
803 *
804 * Reads the ISD200 Configuration data
805 *
806 * RETURNS:
807 * ISD status code
808 */
809 static int isd200_read_config( struct us_data *us )
810 {
811 struct isd200_info *info = (struct isd200_info *)us->extra;
812 int retStatus = ISD200_GOOD;
813 int result;
814
815 usb_stor_dbg(us, "Entering isd200_read_config\n");
816
817 /* read the configuration information from ISD200. Use this to */
818 /* determine what the special ATA CDB bytes are. */
819
820 result = usb_stor_ctrl_transfer(
821 us,
822 us->recv_ctrl_pipe,
823 0x02,
824 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
825 0x0000,
826 0x0002,
827 (void *) &info->ConfigData,
828 sizeof(info->ConfigData));
829
830
831 if (result >= 0) {
832 usb_stor_dbg(us, " Retrieved the following ISD200 Config Data:\n");
833 #ifdef CONFIG_USB_STORAGE_DEBUG
834 isd200_log_config(us, info);
835 #endif
836 } else {
837 usb_stor_dbg(us, " Request to get ISD200 Config Data failed!\n");
838 retStatus = ISD200_ERROR;
839 }
840
841 usb_stor_dbg(us, "Leaving isd200_read_config %08X\n", retStatus);
842 return retStatus;
843 }
844
845
846 /**************************************************************************
847 * isd200_atapi_soft_reset
848 *
849 * Perform an Atapi Soft Reset on the device
850 *
851 * RETURNS:
852 * NT status code
853 */
854 static int isd200_atapi_soft_reset( struct us_data *us )
855 {
856 int retStatus = ISD200_GOOD;
857 int transferStatus;
858
859 usb_stor_dbg(us, "Entering isd200_atapi_soft_reset\n");
860
861 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
862 if (transferStatus != ISD200_TRANSPORT_GOOD) {
863 usb_stor_dbg(us, " Error issuing Atapi Soft Reset\n");
864 retStatus = ISD200_ERROR;
865 }
866
867 usb_stor_dbg(us, "Leaving isd200_atapi_soft_reset %08X\n", retStatus);
868 return retStatus;
869 }
870
871
872 /**************************************************************************
873 * isd200_srst
874 *
875 * Perform an SRST on the device
876 *
877 * RETURNS:
878 * ISD status code
879 */
880 static int isd200_srst( struct us_data *us )
881 {
882 int retStatus = ISD200_GOOD;
883 int transferStatus;
884
885 usb_stor_dbg(us, "Entering isd200_SRST\n");
886
887 transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
888
889 /* check to see if this request failed */
890 if (transferStatus != ISD200_TRANSPORT_GOOD) {
891 usb_stor_dbg(us, " Error issuing SRST\n");
892 retStatus = ISD200_ERROR;
893 } else {
894 /* delay 10ms to give the drive a chance to see it */
895 msleep(10);
896
897 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
898 if (transferStatus != ISD200_TRANSPORT_GOOD) {
899 usb_stor_dbg(us, " Error taking drive out of reset\n");
900 retStatus = ISD200_ERROR;
901 } else {
902 /* delay 50ms to give the drive a chance to recover after SRST */
903 msleep(50);
904 }
905 }
906
907 usb_stor_dbg(us, "Leaving isd200_srst %08X\n", retStatus);
908 return retStatus;
909 }
910
911
912 /**************************************************************************
913 * isd200_try_enum
914 *
915 * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
916 * and tries to analyze the status registers
917 *
918 * RETURNS:
919 * ISD status code
920 */
921 static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
922 int detect )
923 {
924 int status = ISD200_GOOD;
925 unsigned long endTime;
926 struct isd200_info *info = (struct isd200_info *)us->extra;
927 unsigned char *regs = info->RegsBuf;
928 int recheckAsMaster = 0;
929
930 if ( detect )
931 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
932 else
933 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
934
935 /* loop until we detect !BSY or timeout */
936 while(1) {
937
938 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
939 if ( status != ISD200_GOOD )
940 break;
941
942 status = isd200_action( us, ACTION_READ_STATUS,
943 regs, 8 );
944 if ( status != ISD200_GOOD )
945 break;
946
947 if (!detect) {
948 if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) {
949 usb_stor_dbg(us, " %s status is still BSY, try again...\n",
950 master_slave == ATA_ADDRESS_DEVHEAD_STD ?
951 "Master" : "Slave");
952 } else {
953 usb_stor_dbg(us, " %s status !BSY, continue with next operation\n",
954 master_slave == ATA_ADDRESS_DEVHEAD_STD ?
955 "Master" : "Slave");
956 break;
957 }
958 }
959 /* check for ATA_BUSY and */
960 /* ATA_DF (workaround ATA Zip drive) and */
961 /* ATA_ERR (workaround for Archos CD-ROM) */
962 else if (regs[ATA_REG_STATUS_OFFSET] &
963 (ATA_BUSY | ATA_DF | ATA_ERR)) {
964 usb_stor_dbg(us, " Status indicates it is not ready, try again...\n");
965 }
966 /* check for DRDY, ATA devices set DRDY after SRST */
967 else if (regs[ATA_REG_STATUS_OFFSET] & ATA_DRDY) {
968 usb_stor_dbg(us, " Identified ATA device\n");
969 info->DeviceFlags |= DF_ATA_DEVICE;
970 info->DeviceHead = master_slave;
971 break;
972 }
973 /*
974 * check Cylinder High/Low to
975 * determine if it is an ATAPI device
976 */
977 else if (regs[ATA_REG_HCYL_OFFSET] == 0xEB &&
978 regs[ATA_REG_LCYL_OFFSET] == 0x14) {
979 /*
980 * It seems that the RICOH
981 * MP6200A CD/RW drive will
982 * report itself okay as a
983 * slave when it is really a
984 * master. So this check again
985 * as a master device just to
986 * make sure it doesn't report
987 * itself okay as a master also
988 */
989 if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
990 !recheckAsMaster) {
991 usb_stor_dbg(us, " Identified ATAPI device as slave. Rechecking again as master\n");
992 recheckAsMaster = 1;
993 master_slave = ATA_ADDRESS_DEVHEAD_STD;
994 } else {
995 usb_stor_dbg(us, " Identified ATAPI device\n");
996 info->DeviceHead = master_slave;
997
998 status = isd200_atapi_soft_reset(us);
999 break;
1000 }
1001 } else {
1002 usb_stor_dbg(us, " Not ATA, not ATAPI - Weird\n");
1003 break;
1004 }
1005
1006 /* check for timeout on this request */
1007 if (time_after_eq(jiffies, endTime)) {
1008 if (!detect)
1009 usb_stor_dbg(us, " BSY check timeout, just continue with next operation...\n");
1010 else
1011 usb_stor_dbg(us, " Device detect timeout!\n");
1012 break;
1013 }
1014 }
1015
1016 return status;
1017 }
1018
1019 /**************************************************************************
1020 * isd200_manual_enum
1021 *
1022 * Determines if the drive attached is an ATA or ATAPI and if it is a
1023 * master or slave.
1024 *
1025 * RETURNS:
1026 * ISD status code
1027 */
1028 static int isd200_manual_enum(struct us_data *us)
1029 {
1030 struct isd200_info *info = (struct isd200_info *)us->extra;
1031 int retStatus = ISD200_GOOD;
1032
1033 usb_stor_dbg(us, "Entering isd200_manual_enum\n");
1034
1035 retStatus = isd200_read_config(us);
1036 if (retStatus == ISD200_GOOD) {
1037 int isslave;
1038 /* master or slave? */
1039 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
1040 if (retStatus == ISD200_GOOD)
1041 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
1042
1043 if (retStatus == ISD200_GOOD) {
1044 retStatus = isd200_srst(us);
1045 if (retStatus == ISD200_GOOD)
1046 /* ata or atapi? */
1047 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
1048 }
1049
1050 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
1051 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
1052 usb_stor_dbg(us, " Setting Master/Slave selection to %d\n",
1053 isslave);
1054 info->ConfigData.ATAConfig &= 0x3f;
1055 info->ConfigData.ATAConfig |= (isslave<<6);
1056 retStatus = isd200_write_config(us);
1057 }
1058 }
1059
1060 usb_stor_dbg(us, "Leaving isd200_manual_enum %08X\n", retStatus);
1061 return(retStatus);
1062 }
1063
1064 static void isd200_fix_driveid(u16 *id)
1065 {
1066 #ifndef __LITTLE_ENDIAN
1067 # ifdef __BIG_ENDIAN
1068 int i;
1069
1070 for (i = 0; i < ATA_ID_WORDS; i++)
1071 id[i] = __le16_to_cpu(id[i]);
1072 # else
1073 # error "Please fix <asm/byteorder.h>"
1074 # endif
1075 #endif
1076 }
1077
1078 static void isd200_dump_driveid(struct us_data *us, u16 *id)
1079 {
1080 usb_stor_dbg(us, " Identify Data Structure:\n");
1081 usb_stor_dbg(us, " config = 0x%x\n", id[ATA_ID_CONFIG]);
1082 usb_stor_dbg(us, " cyls = 0x%x\n", id[ATA_ID_CYLS]);
1083 usb_stor_dbg(us, " heads = 0x%x\n", id[ATA_ID_HEADS]);
1084 usb_stor_dbg(us, " track_bytes = 0x%x\n", id[4]);
1085 usb_stor_dbg(us, " sector_bytes = 0x%x\n", id[5]);
1086 usb_stor_dbg(us, " sectors = 0x%x\n", id[ATA_ID_SECTORS]);
1087 usb_stor_dbg(us, " serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]);
1088 usb_stor_dbg(us, " buf_type = 0x%x\n", id[20]);
1089 usb_stor_dbg(us, " buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]);
1090 usb_stor_dbg(us, " ecc_bytes = 0x%x\n", id[22]);
1091 usb_stor_dbg(us, " fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]);
1092 usb_stor_dbg(us, " model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]);
1093 usb_stor_dbg(us, " max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff);
1094 usb_stor_dbg(us, " dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]);
1095 usb_stor_dbg(us, " capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8);
1096 usb_stor_dbg(us, " tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8);
1097 usb_stor_dbg(us, " tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8);
1098 usb_stor_dbg(us, " field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]);
1099 usb_stor_dbg(us, " cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]);
1100 usb_stor_dbg(us, " cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]);
1101 usb_stor_dbg(us, " cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]);
1102 usb_stor_dbg(us, " cur_capacity = 0x%x\n", ata_id_u32(id, 57));
1103 usb_stor_dbg(us, " multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff);
1104 usb_stor_dbg(us, " lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY));
1105 usb_stor_dbg(us, " command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]);
1106 usb_stor_dbg(us, " command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]);
1107 }
1108
1109 /**************************************************************************
1110 * isd200_get_inquiry_data
1111 *
1112 * Get inquiry data
1113 *
1114 * RETURNS:
1115 * ISD status code
1116 */
1117 static int isd200_get_inquiry_data( struct us_data *us )
1118 {
1119 struct isd200_info *info = (struct isd200_info *)us->extra;
1120 int retStatus = ISD200_GOOD;
1121 u16 *id = info->id;
1122
1123 usb_stor_dbg(us, "Entering isd200_get_inquiry_data\n");
1124
1125 /* set default to Master */
1126 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1127
1128 /* attempt to manually enumerate this device */
1129 retStatus = isd200_manual_enum(us);
1130 if (retStatus == ISD200_GOOD) {
1131 int transferStatus;
1132
1133 /* check for an ATA device */
1134 if (info->DeviceFlags & DF_ATA_DEVICE) {
1135 /* this must be an ATA device */
1136 /* perform an ATA Command Identify */
1137 transferStatus = isd200_action( us, ACTION_IDENTIFY,
1138 id, ATA_ID_WORDS * 2);
1139 if (transferStatus != ISD200_TRANSPORT_GOOD) {
1140 /* Error issuing ATA Command Identify */
1141 usb_stor_dbg(us, " Error issuing ATA Command Identify\n");
1142 retStatus = ISD200_ERROR;
1143 } else {
1144 /* ATA Command Identify successful */
1145 int i;
1146 __be16 *src;
1147 __u16 *dest;
1148
1149 isd200_fix_driveid(id);
1150 isd200_dump_driveid(us, id);
1151
1152 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1153
1154 /* Standard IDE interface only supports disks */
1155 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1156
1157 /* The length must be at least 36 (5 + 31) */
1158 info->InquiryData.AdditionalLength = 0x1F;
1159
1160 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) {
1161 /* set the removable bit */
1162 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1163 info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1164 }
1165
1166 /* Fill in vendor identification fields */
1167 src = (__be16 *)&id[ATA_ID_PROD];
1168 dest = (__u16*)info->InquiryData.VendorId;
1169 for (i=0;i<4;i++)
1170 dest[i] = be16_to_cpu(src[i]);
1171
1172 src = (__be16 *)&id[ATA_ID_PROD + 8/2];
1173 dest = (__u16*)info->InquiryData.ProductId;
1174 for (i=0;i<8;i++)
1175 dest[i] = be16_to_cpu(src[i]);
1176
1177 src = (__be16 *)&id[ATA_ID_FW_REV];
1178 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1179 for (i=0;i<2;i++)
1180 dest[i] = be16_to_cpu(src[i]);
1181
1182 /* determine if it supports Media Status Notification */
1183 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) {
1184 usb_stor_dbg(us, " Device supports Media Status Notification\n");
1185
1186 /*
1187 * Indicate that it is enabled, even
1188 * though it is not.
1189 * This allows the lock/unlock of the
1190 * media to work correctly.
1191 */
1192 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1193 }
1194 else
1195 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1196
1197 }
1198 } else {
1199 /*
1200 * this must be an ATAPI device
1201 * use an ATAPI protocol (Transparent SCSI)
1202 */
1203 us->protocol_name = "Transparent SCSI";
1204 us->proto_handler = usb_stor_transparent_scsi_command;
1205
1206 usb_stor_dbg(us, "Protocol changed to: %s\n",
1207 us->protocol_name);
1208
1209 /* Free driver structure */
1210 us->extra_destructor(info);
1211 kfree(info);
1212 us->extra = NULL;
1213 us->extra_destructor = NULL;
1214 }
1215 }
1216
1217 usb_stor_dbg(us, "Leaving isd200_get_inquiry_data %08X\n", retStatus);
1218
1219 return(retStatus);
1220 }
1221
1222 /**************************************************************************
1223 * isd200_scsi_to_ata
1224 *
1225 * Translate SCSI commands to ATA commands.
1226 *
1227 * RETURNS:
1228 * 1 if the command needs to be sent to the transport layer
1229 * 0 otherwise
1230 */
1231 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1232 union ata_cdb * ataCdb)
1233 {
1234 struct isd200_info *info = (struct isd200_info *)us->extra;
1235 u16 *id = info->id;
1236 int sendToTransport = 1;
1237 unsigned char sectnum, head;
1238 unsigned short cylinder;
1239 unsigned long lba;
1240 unsigned long blockCount;
1241 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1242
1243 memset(ataCdb, 0, sizeof(union ata_cdb));
1244
1245 /* SCSI Command */
1246 switch (srb->cmnd[0]) {
1247 case INQUIRY:
1248 usb_stor_dbg(us, " ATA OUT - INQUIRY\n");
1249
1250 /* copy InquiryData */
1251 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1252 sizeof(info->InquiryData), srb);
1253 srb->result = SAM_STAT_GOOD;
1254 sendToTransport = 0;
1255 break;
1256
1257 case MODE_SENSE:
1258 usb_stor_dbg(us, " ATA OUT - SCSIOP_MODE_SENSE\n");
1259
1260 /* Initialize the return buffer */
1261 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1262
1263 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1264 {
1265 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1266 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1267 ataCdb->generic.TransferBlockSize = 1;
1268 ataCdb->generic.RegisterSelect = REG_COMMAND;
1269 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1270 isd200_srb_set_bufflen(srb, 0);
1271 } else {
1272 usb_stor_dbg(us, " Media Status not supported, just report okay\n");
1273 srb->result = SAM_STAT_GOOD;
1274 sendToTransport = 0;
1275 }
1276 break;
1277
1278 case TEST_UNIT_READY:
1279 usb_stor_dbg(us, " ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1280
1281 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1282 {
1283 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1284 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1285 ataCdb->generic.TransferBlockSize = 1;
1286 ataCdb->generic.RegisterSelect = REG_COMMAND;
1287 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1288 isd200_srb_set_bufflen(srb, 0);
1289 } else {
1290 usb_stor_dbg(us, " Media Status not supported, just report okay\n");
1291 srb->result = SAM_STAT_GOOD;
1292 sendToTransport = 0;
1293 }
1294 break;
1295
1296 case READ_CAPACITY:
1297 {
1298 unsigned long capacity;
1299 struct read_capacity_data readCapacityData;
1300
1301 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ_CAPACITY\n");
1302
1303 if (ata_id_has_lba(id))
1304 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1;
1305 else
1306 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] *
1307 id[ATA_ID_SECTORS]) - 1;
1308
1309 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1310 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1311
1312 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1313 sizeof(readCapacityData), srb);
1314 srb->result = SAM_STAT_GOOD;
1315 sendToTransport = 0;
1316 }
1317 break;
1318
1319 case READ_10:
1320 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ\n");
1321
1322 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1323 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1324
1325 if (ata_id_has_lba(id)) {
1326 sectnum = (unsigned char)(lba);
1327 cylinder = (unsigned short)(lba>>8);
1328 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1329 } else {
1330 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1331 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1332 id[ATA_ID_HEADS]));
1333 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1334 id[ATA_ID_HEADS]);
1335 }
1336 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1337 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1338 ataCdb->generic.TransferBlockSize = 1;
1339 ataCdb->generic.RegisterSelect =
1340 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1341 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1342 REG_DEVICE_HEAD | REG_COMMAND;
1343 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1344 ataCdb->write.SectorNumberByte = sectnum;
1345 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1346 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1347 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1348 ataCdb->write.CommandByte = ATA_CMD_PIO_READ;
1349 break;
1350
1351 case WRITE_10:
1352 usb_stor_dbg(us, " ATA OUT - SCSIOP_WRITE\n");
1353
1354 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1355 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1356
1357 if (ata_id_has_lba(id)) {
1358 sectnum = (unsigned char)(lba);
1359 cylinder = (unsigned short)(lba>>8);
1360 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1361 } else {
1362 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1363 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1364 id[ATA_ID_HEADS]));
1365 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1366 id[ATA_ID_HEADS]);
1367 }
1368 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1369 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1370 ataCdb->generic.TransferBlockSize = 1;
1371 ataCdb->generic.RegisterSelect =
1372 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1373 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1374 REG_DEVICE_HEAD | REG_COMMAND;
1375 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1376 ataCdb->write.SectorNumberByte = sectnum;
1377 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1378 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1379 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1380 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE;
1381 break;
1382
1383 case ALLOW_MEDIUM_REMOVAL:
1384 usb_stor_dbg(us, " ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1385
1386 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1387 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n",
1388 srb->cmnd[4]);
1389
1390 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1391 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1392 ataCdb->generic.TransferBlockSize = 1;
1393 ataCdb->generic.RegisterSelect = REG_COMMAND;
1394 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1395 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
1396 isd200_srb_set_bufflen(srb, 0);
1397 } else {
1398 usb_stor_dbg(us, " Not removeable media, just report okay\n");
1399 srb->result = SAM_STAT_GOOD;
1400 sendToTransport = 0;
1401 }
1402 break;
1403
1404 case START_STOP:
1405 usb_stor_dbg(us, " ATA OUT - SCSIOP_START_STOP_UNIT\n");
1406 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1407
1408 if ((srb->cmnd[4] & 0x3) == 0x2) {
1409 usb_stor_dbg(us, " Media Eject\n");
1410 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1411 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1412 ataCdb->generic.TransferBlockSize = 0;
1413 ataCdb->generic.RegisterSelect = REG_COMMAND;
1414 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1415 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1416 usb_stor_dbg(us, " Get Media Status\n");
1417 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1418 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1419 ataCdb->generic.TransferBlockSize = 1;
1420 ataCdb->generic.RegisterSelect = REG_COMMAND;
1421 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1422 isd200_srb_set_bufflen(srb, 0);
1423 } else {
1424 usb_stor_dbg(us, " Nothing to do, just report okay\n");
1425 srb->result = SAM_STAT_GOOD;
1426 sendToTransport = 0;
1427 }
1428 break;
1429
1430 default:
1431 usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n",
1432 srb->cmnd[0]);
1433 srb->result = DID_ERROR << 16;
1434 sendToTransport = 0;
1435 break;
1436 }
1437
1438 return(sendToTransport);
1439 }
1440
1441
1442 /**************************************************************************
1443 * isd200_free_info
1444 *
1445 * Frees the driver structure.
1446 */
1447 static void isd200_free_info_ptrs(void *info_)
1448 {
1449 struct isd200_info *info = (struct isd200_info *) info_;
1450
1451 if (info) {
1452 kfree(info->id);
1453 kfree(info->RegsBuf);
1454 kfree(info->srb.sense_buffer);
1455 }
1456 }
1457
1458 /**************************************************************************
1459 * isd200_init_info
1460 *
1461 * Allocates (if necessary) and initializes the driver structure.
1462 *
1463 * RETURNS:
1464 * ISD status code
1465 */
1466 static int isd200_init_info(struct us_data *us)
1467 {
1468 struct isd200_info *info;
1469
1470 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1471 if (!info)
1472 return ISD200_ERROR;
1473
1474 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
1475 info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1476 info->srb.sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1477
1478 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1479 isd200_free_info_ptrs(info);
1480 kfree(info);
1481 return ISD200_ERROR;
1482 }
1483
1484 us->extra = info;
1485 us->extra_destructor = isd200_free_info_ptrs;
1486
1487 return ISD200_GOOD;
1488 }
1489
1490 /**************************************************************************
1491 * Initialization for the ISD200
1492 */
1493
1494 static int isd200_Initialization(struct us_data *us)
1495 {
1496 usb_stor_dbg(us, "ISD200 Initialization...\n");
1497
1498 /* Initialize ISD200 info struct */
1499
1500 if (isd200_init_info(us) == ISD200_ERROR) {
1501 usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n");
1502 } else {
1503 /* Get device specific data */
1504
1505 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1506 usb_stor_dbg(us, "ISD200 Initialization Failure\n");
1507 else
1508 usb_stor_dbg(us, "ISD200 Initialization complete\n");
1509 }
1510
1511 return 0;
1512 }
1513
1514
1515 /**************************************************************************
1516 * Protocol and Transport for the ISD200 ASIC
1517 *
1518 * This protocol and transport are for ATA devices connected to an ISD200
1519 * ASIC. An ATAPI device that is connected as a slave device will be
1520 * detected in the driver initialization function and the protocol will
1521 * be changed to an ATAPI protocol (Transparent SCSI).
1522 *
1523 */
1524
1525 static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1526 {
1527 int sendToTransport = 1, orig_bufflen;
1528 union ata_cdb ataCdb;
1529
1530 /* Make sure driver was initialized */
1531
1532 if (us->extra == NULL) {
1533 usb_stor_dbg(us, "ERROR Driver not initialized\n");
1534 srb->result = DID_ERROR << 16;
1535 return;
1536 }
1537
1538 scsi_set_resid(srb, 0);
1539 /* scsi_bufflen might change in protocol translation to ata */
1540 orig_bufflen = scsi_bufflen(srb);
1541 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1542
1543 /* send the command to the transport layer */
1544 if (sendToTransport)
1545 isd200_invoke_transport(us, srb, &ataCdb);
1546
1547 isd200_srb_set_bufflen(srb, orig_bufflen);
1548 }
1549
1550 static struct scsi_host_template isd200_host_template;
1551
1552 static int isd200_probe(struct usb_interface *intf,
1553 const struct usb_device_id *id)
1554 {
1555 struct us_data *us;
1556 int result;
1557
1558 result = usb_stor_probe1(&us, intf, id,
1559 (id - isd200_usb_ids) + isd200_unusual_dev_list,
1560 &isd200_host_template);
1561 if (result)
1562 return result;
1563
1564 us->protocol_name = "ISD200 ATA/ATAPI";
1565 us->proto_handler = isd200_ata_command;
1566
1567 result = usb_stor_probe2(us);
1568 return result;
1569 }
1570
1571 static struct usb_driver isd200_driver = {
1572 .name = DRV_NAME,
1573 .probe = isd200_probe,
1574 .disconnect = usb_stor_disconnect,
1575 .suspend = usb_stor_suspend,
1576 .resume = usb_stor_resume,
1577 .reset_resume = usb_stor_reset_resume,
1578 .pre_reset = usb_stor_pre_reset,
1579 .post_reset = usb_stor_post_reset,
1580 .id_table = isd200_usb_ids,
1581 .soft_unbind = 1,
1582 .no_dynamic_id = 1,
1583 };
1584
1585 module_usb_stor_driver(isd200_driver, isd200_host_template, DRV_NAME);
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