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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
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 * History:
19 *
20 * 2002-10-19: Removed the specialized transfer routines.
21 * (Alan Stern <stern@rowland.harvard.edu>)
22 * 2001-02-24: Removed lots of duplicate code and simplified the structure.
23 * (bjorn@haxx.se)
24 * 2002-01-16: Fixed endianness bug so it works on the ppc arch.
25 * (Luc Saillard <luc@saillard.org>)
26 * 2002-01-17: All bitfields removed.
27 * (bjorn@haxx.se)
28 */
29
30
31/* Include files */
32
33#include <linux/jiffies.h>
34#include <linux/errno.h>
35#include <linux/module.h>
36#include <linux/slab.h>
37#include <linux/ata.h>
38#include <linux/hdreg.h>
39#include <linux/scatterlist.h>
40
41#include <scsi/scsi.h>
42#include <scsi/scsi_cmnd.h>
43#include <scsi/scsi_device.h>
44
45#include "usb.h"
46#include "transport.h"
47#include "protocol.h"
48#include "debug.h"
49#include "scsiglue.h"
50
51#define DRV_NAME "ums-isd200"
52
53MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
54MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>");
55MODULE_LICENSE("GPL");
56MODULE_IMPORT_NS("USB_STORAGE");
57
58static int isd200_Initialization(struct us_data *us);
59
60
61/*
62 * The table of devices
63 */
64#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
65 vendorName, productName, useProtocol, useTransport, \
66 initFunction, flags) \
67{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
68 .driver_info = (flags) }
69
70static const struct usb_device_id isd200_usb_ids[] = {
71# include "unusual_isd200.h"
72 { } /* Terminating entry */
73};
74MODULE_DEVICE_TABLE(usb, isd200_usb_ids);
75
76#undef UNUSUAL_DEV
77
78/*
79 * The flags table
80 */
81#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
82 vendor_name, product_name, use_protocol, use_transport, \
83 init_function, Flags) \
84{ \
85 .vendorName = vendor_name, \
86 .productName = product_name, \
87 .useProtocol = use_protocol, \
88 .useTransport = use_transport, \
89 .initFunction = init_function, \
90}
91
92static const struct us_unusual_dev isd200_unusual_dev_list[] = {
93# include "unusual_isd200.h"
94 { } /* Terminating entry */
95};
96
97#undef UNUSUAL_DEV
98
99/* Timeout defines (in Seconds) */
100
101#define ISD200_ENUM_BSY_TIMEOUT 35
102#define ISD200_ENUM_DETECT_TIMEOUT 30
103#define ISD200_DEFAULT_TIMEOUT 30
104
105/* device flags */
106#define DF_ATA_DEVICE 0x0001
107#define DF_MEDIA_STATUS_ENABLED 0x0002
108#define DF_REMOVABLE_MEDIA 0x0004
109
110/* capability bit definitions */
111#define CAPABILITY_DMA 0x01
112#define CAPABILITY_LBA 0x02
113
114/* command_setX bit definitions */
115#define COMMANDSET_REMOVABLE 0x02
116#define COMMANDSET_MEDIA_STATUS 0x10
117
118/* ATA Vendor Specific defines */
119#define ATA_ADDRESS_DEVHEAD_STD 0xa0
120#define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
121#define ATA_ADDRESS_DEVHEAD_SLAVE 0x10
122
123/* Action Select bits */
124#define ACTION_SELECT_0 0x01
125#define ACTION_SELECT_1 0x02
126#define ACTION_SELECT_2 0x04
127#define ACTION_SELECT_3 0x08
128#define ACTION_SELECT_4 0x10
129#define ACTION_SELECT_5 0x20
130#define ACTION_SELECT_6 0x40
131#define ACTION_SELECT_7 0x80
132
133/* Register Select bits */
134#define REG_ALTERNATE_STATUS 0x01
135#define REG_DEVICE_CONTROL 0x01
136#define REG_ERROR 0x02
137#define REG_FEATURES 0x02
138#define REG_SECTOR_COUNT 0x04
139#define REG_SECTOR_NUMBER 0x08
140#define REG_CYLINDER_LOW 0x10
141#define REG_CYLINDER_HIGH 0x20
142#define REG_DEVICE_HEAD 0x40
143#define REG_STATUS 0x80
144#define REG_COMMAND 0x80
145
146/* ATA registers offset definitions */
147#define ATA_REG_ERROR_OFFSET 1
148#define ATA_REG_LCYL_OFFSET 4
149#define ATA_REG_HCYL_OFFSET 5
150#define ATA_REG_STATUS_OFFSET 7
151
152/* ATA error definitions not in <linux/hdreg.h> */
153#define ATA_ERROR_MEDIA_CHANGE 0x20
154
155/* ATA command definitions not in <linux/hdreg.h> */
156#define ATA_COMMAND_GET_MEDIA_STATUS 0xDA
157#define ATA_COMMAND_MEDIA_EJECT 0xED
158
159/* ATA drive control definitions */
160#define ATA_DC_DISABLE_INTERRUPTS 0x02
161#define ATA_DC_RESET_CONTROLLER 0x04
162#define ATA_DC_REENABLE_CONTROLLER 0x00
163
164/*
165 * General purpose return codes
166 */
167
168#define ISD200_ERROR -1
169#define ISD200_GOOD 0
170
171/*
172 * Transport return codes
173 */
174
175#define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */
176#define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */
177#define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
178
179/* driver action codes */
180#define ACTION_READ_STATUS 0
181#define ACTION_RESET 1
182#define ACTION_REENABLE 2
183#define ACTION_SOFT_RESET 3
184#define ACTION_ENUM 4
185#define ACTION_IDENTIFY 5
186
187
188/*
189 * ata_cdb struct
190 */
191
192
193union ata_cdb {
194 struct {
195 unsigned char SignatureByte0;
196 unsigned char SignatureByte1;
197 unsigned char ActionSelect;
198 unsigned char RegisterSelect;
199 unsigned char TransferBlockSize;
200 unsigned char WriteData3F6;
201 unsigned char WriteData1F1;
202 unsigned char WriteData1F2;
203 unsigned char WriteData1F3;
204 unsigned char WriteData1F4;
205 unsigned char WriteData1F5;
206 unsigned char WriteData1F6;
207 unsigned char WriteData1F7;
208 unsigned char Reserved[3];
209 } generic;
210
211 struct {
212 unsigned char SignatureByte0;
213 unsigned char SignatureByte1;
214 unsigned char ActionSelect;
215 unsigned char RegisterSelect;
216 unsigned char TransferBlockSize;
217 unsigned char AlternateStatusByte;
218 unsigned char ErrorByte;
219 unsigned char SectorCountByte;
220 unsigned char SectorNumberByte;
221 unsigned char CylinderLowByte;
222 unsigned char CylinderHighByte;
223 unsigned char DeviceHeadByte;
224 unsigned char StatusByte;
225 unsigned char Reserved[3];
226 } read;
227
228 struct {
229 unsigned char SignatureByte0;
230 unsigned char SignatureByte1;
231 unsigned char ActionSelect;
232 unsigned char RegisterSelect;
233 unsigned char TransferBlockSize;
234 unsigned char DeviceControlByte;
235 unsigned char FeaturesByte;
236 unsigned char SectorCountByte;
237 unsigned char SectorNumberByte;
238 unsigned char CylinderLowByte;
239 unsigned char CylinderHighByte;
240 unsigned char DeviceHeadByte;
241 unsigned char CommandByte;
242 unsigned char Reserved[3];
243 } write;
244};
245
246
247/*
248 * Inquiry data structure. This is the data returned from the target
249 * after it receives an inquiry.
250 *
251 * This structure may be extended by the number of bytes specified
252 * in the field AdditionalLength. The defined size constant only
253 * includes fields through ProductRevisionLevel.
254 */
255
256/*
257 * DeviceType field
258 */
259#define DIRECT_ACCESS_DEVICE 0x00 /* disks */
260#define DEVICE_REMOVABLE 0x80
261
262struct inquiry_data {
263 unsigned char DeviceType;
264 unsigned char DeviceTypeModifier;
265 unsigned char Versions;
266 unsigned char Format;
267 unsigned char AdditionalLength;
268 unsigned char Reserved[2];
269 unsigned char Capability;
270 unsigned char VendorId[8];
271 unsigned char ProductId[16];
272 unsigned char ProductRevisionLevel[4];
273 unsigned char VendorSpecific[20];
274 unsigned char Reserved3[40];
275} __attribute__ ((packed));
276
277/*
278 * INQUIRY data buffer size
279 */
280
281#define INQUIRYDATABUFFERSIZE 36
282
283
284/*
285 * ISD200 CONFIG data struct
286 */
287
288#define ATACFG_TIMING 0x0f
289#define ATACFG_ATAPI_RESET 0x10
290#define ATACFG_MASTER 0x20
291#define ATACFG_BLOCKSIZE 0xa0
292
293#define ATACFGE_LAST_LUN 0x07
294#define ATACFGE_DESC_OVERRIDE 0x08
295#define ATACFGE_STATE_SUSPEND 0x10
296#define ATACFGE_SKIP_BOOT 0x20
297#define ATACFGE_CONF_DESC2 0x40
298#define ATACFGE_INIT_STATUS 0x80
299
300#define CFG_CAPABILITY_SRST 0x01
301
302struct isd200_config {
303 unsigned char EventNotification;
304 unsigned char ExternalClock;
305 unsigned char ATAInitTimeout;
306 unsigned char ATAConfig;
307 unsigned char ATAMajorCommand;
308 unsigned char ATAMinorCommand;
309 unsigned char ATAExtraConfig;
310 unsigned char Capability;
311}__attribute__ ((packed));
312
313
314/*
315 * ISD200 driver information struct
316 */
317
318struct isd200_info {
319 struct inquiry_data InquiryData;
320 u16 *id;
321 struct isd200_config ConfigData;
322 unsigned char *RegsBuf;
323 unsigned char ATARegs[8];
324 unsigned char DeviceHead;
325 unsigned char DeviceFlags;
326
327 /* maximum number of LUNs supported */
328 unsigned char MaxLUNs;
329 unsigned char cmnd[MAX_COMMAND_SIZE];
330 struct scsi_cmnd srb;
331 struct scatterlist sg;
332};
333
334
335/*
336 * Read Capacity Data - returned in Big Endian format
337 */
338
339struct read_capacity_data {
340 __be32 LogicalBlockAddress;
341 __be32 BytesPerBlock;
342};
343
344/*
345 * Read Block Limits Data - returned in Big Endian format
346 * This structure returns the maximum and minimum block
347 * size for a TAPE device.
348 */
349
350struct read_block_limits {
351 unsigned char Reserved;
352 unsigned char BlockMaximumSize[3];
353 unsigned char BlockMinimumSize[2];
354};
355
356
357/*
358 * Sense Data Format
359 */
360
361#define SENSE_ERRCODE 0x7f
362#define SENSE_ERRCODE_VALID 0x80
363#define SENSE_FLAG_SENSE_KEY 0x0f
364#define SENSE_FLAG_BAD_LENGTH 0x20
365#define SENSE_FLAG_END_OF_MEDIA 0x40
366#define SENSE_FLAG_FILE_MARK 0x80
367struct sense_data {
368 unsigned char ErrorCode;
369 unsigned char SegmentNumber;
370 unsigned char Flags;
371 unsigned char Information[4];
372 unsigned char AdditionalSenseLength;
373 unsigned char CommandSpecificInformation[4];
374 unsigned char AdditionalSenseCode;
375 unsigned char AdditionalSenseCodeQualifier;
376 unsigned char FieldReplaceableUnitCode;
377 unsigned char SenseKeySpecific[3];
378} __attribute__ ((packed));
379
380/*
381 * Default request sense buffer size
382 */
383
384#define SENSE_BUFFER_SIZE 18
385
386/***********************************************************************
387 * Helper routines
388 ***********************************************************************/
389
390/**************************************************************************
391 * isd200_build_sense
392 *
393 * Builds an artificial sense buffer to report the results of a
394 * failed command.
395 *
396 * RETURNS:
397 * void
398 */
399static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
400{
401 struct isd200_info *info = (struct isd200_info *)us->extra;
402 struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
403 unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET];
404
405 if(error & ATA_ERROR_MEDIA_CHANGE) {
406 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
407 buf->AdditionalSenseLength = 0xb;
408 buf->Flags = UNIT_ATTENTION;
409 buf->AdditionalSenseCode = 0;
410 buf->AdditionalSenseCodeQualifier = 0;
411 } else if (error & ATA_MCR) {
412 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
413 buf->AdditionalSenseLength = 0xb;
414 buf->Flags = UNIT_ATTENTION;
415 buf->AdditionalSenseCode = 0;
416 buf->AdditionalSenseCodeQualifier = 0;
417 } else if (error & ATA_TRK0NF) {
418 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
419 buf->AdditionalSenseLength = 0xb;
420 buf->Flags = NOT_READY;
421 buf->AdditionalSenseCode = 0;
422 buf->AdditionalSenseCodeQualifier = 0;
423 } else if (error & ATA_UNC) {
424 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
425 buf->AdditionalSenseLength = 0xb;
426 buf->Flags = DATA_PROTECT;
427 buf->AdditionalSenseCode = 0;
428 buf->AdditionalSenseCodeQualifier = 0;
429 } else {
430 buf->ErrorCode = 0;
431 buf->AdditionalSenseLength = 0;
432 buf->Flags = 0;
433 buf->AdditionalSenseCode = 0;
434 buf->AdditionalSenseCodeQualifier = 0;
435 }
436}
437
438
439/***********************************************************************
440 * Transport routines
441 ***********************************************************************/
442
443/**************************************************************************
444 * isd200_set_srb(), isd200_srb_set_bufflen()
445 *
446 * Two helpers to facilitate in initialization of scsi_cmnd structure
447 * Will need to change when struct scsi_cmnd changes
448 */
449static void isd200_set_srb(struct isd200_info *info,
450 enum dma_data_direction dir, void* buff, unsigned bufflen)
451{
452 struct scsi_cmnd *srb = &info->srb;
453
454 if (buff)
455 sg_init_one(&info->sg, buff, bufflen);
456
457 srb->sc_data_direction = dir;
458 srb->sdb.table.sgl = buff ? &info->sg : NULL;
459 srb->sdb.length = bufflen;
460 srb->sdb.table.nents = buff ? 1 : 0;
461}
462
463static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen)
464{
465 srb->sdb.length = bufflen;
466}
467
468
469/**************************************************************************
470 * isd200_action
471 *
472 * Routine for sending commands to the isd200
473 *
474 * RETURNS:
475 * ISD status code
476 */
477static int isd200_action( struct us_data *us, int action,
478 void* pointer, int value )
479{
480 union ata_cdb ata;
481 /* static to prevent this large struct being placed on the valuable stack */
482 static struct scsi_device srb_dev;
483 struct isd200_info *info = (struct isd200_info *)us->extra;
484 struct scsi_cmnd *srb = &info->srb;
485 int status;
486
487 memset(&ata, 0, sizeof(ata));
488 memcpy(srb->cmnd, info->cmnd, MAX_COMMAND_SIZE);
489 srb->device = &srb_dev;
490
491 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
492 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
493 ata.generic.TransferBlockSize = 1;
494
495 switch ( action ) {
496 case ACTION_READ_STATUS:
497 usb_stor_dbg(us, " isd200_action(READ_STATUS)\n");
498 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
499 ata.generic.RegisterSelect =
500 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
501 REG_STATUS | REG_ERROR;
502 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
503 break;
504
505 case ACTION_ENUM:
506 usb_stor_dbg(us, " isd200_action(ENUM,0x%02x)\n", value);
507 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
508 ACTION_SELECT_3|ACTION_SELECT_4|
509 ACTION_SELECT_5;
510 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
511 ata.write.DeviceHeadByte = value;
512 isd200_set_srb(info, DMA_NONE, NULL, 0);
513 break;
514
515 case ACTION_RESET:
516 usb_stor_dbg(us, " isd200_action(RESET)\n");
517 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
518 ACTION_SELECT_3|ACTION_SELECT_4;
519 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
520 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
521 isd200_set_srb(info, DMA_NONE, NULL, 0);
522 break;
523
524 case ACTION_REENABLE:
525 usb_stor_dbg(us, " isd200_action(REENABLE)\n");
526 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
527 ACTION_SELECT_3|ACTION_SELECT_4;
528 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
529 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
530 isd200_set_srb(info, DMA_NONE, NULL, 0);
531 break;
532
533 case ACTION_SOFT_RESET:
534 usb_stor_dbg(us, " isd200_action(SOFT_RESET)\n");
535 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
536 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
537 ata.write.DeviceHeadByte = info->DeviceHead;
538 ata.write.CommandByte = ATA_CMD_DEV_RESET;
539 isd200_set_srb(info, DMA_NONE, NULL, 0);
540 break;
541
542 case ACTION_IDENTIFY:
543 usb_stor_dbg(us, " isd200_action(IDENTIFY)\n");
544 ata.generic.RegisterSelect = REG_COMMAND;
545 ata.write.CommandByte = ATA_CMD_ID_ATA;
546 isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
547 ATA_ID_WORDS * 2);
548 break;
549
550 default:
551 usb_stor_dbg(us, "Error: Undefined action %d\n", action);
552 return ISD200_ERROR;
553 }
554
555 memcpy(srb->cmnd, &ata, sizeof(ata.generic));
556 srb->cmd_len = sizeof(ata.generic);
557 status = usb_stor_Bulk_transport(srb, us);
558 if (status == USB_STOR_TRANSPORT_GOOD)
559 status = ISD200_GOOD;
560 else {
561 usb_stor_dbg(us, " isd200_action(0x%02x) error: %d\n",
562 action, status);
563 status = ISD200_ERROR;
564 /* need to reset device here */
565 }
566
567 return status;
568}
569
570/**************************************************************************
571 * isd200_read_regs
572 *
573 * Read ATA Registers
574 *
575 * RETURNS:
576 * ISD status code
577 */
578static int isd200_read_regs( struct us_data *us )
579{
580 struct isd200_info *info = (struct isd200_info *)us->extra;
581 int retStatus = ISD200_GOOD;
582 int transferStatus;
583
584 usb_stor_dbg(us, "Entering isd200_IssueATAReadRegs\n");
585
586 transferStatus = isd200_action( us, ACTION_READ_STATUS,
587 info->RegsBuf, sizeof(info->ATARegs) );
588 if (transferStatus != ISD200_TRANSPORT_GOOD) {
589 usb_stor_dbg(us, " Error reading ATA registers\n");
590 retStatus = ISD200_ERROR;
591 } else {
592 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
593 usb_stor_dbg(us, " Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n",
594 info->ATARegs[ATA_REG_ERROR_OFFSET]);
595 }
596
597 return retStatus;
598}
599
600
601/**************************************************************************
602 * Invoke the transport and basic error-handling/recovery methods
603 *
604 * This is used by the protocol layers to actually send the message to
605 * the device and receive the response.
606 */
607static void isd200_invoke_transport( struct us_data *us,
608 struct scsi_cmnd *srb,
609 union ata_cdb *ataCdb )
610{
611 int need_auto_sense = 0;
612 int transferStatus;
613 int result;
614
615 /* send the command to the transport layer */
616 memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
617 srb->cmd_len = sizeof(ataCdb->generic);
618 transferStatus = usb_stor_Bulk_transport(srb, us);
619
620 /*
621 * if the command gets aborted by the higher layers, we need to
622 * short-circuit all other processing
623 */
624 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
625 usb_stor_dbg(us, "-- command was aborted\n");
626 goto Handle_Abort;
627 }
628
629 switch (transferStatus) {
630
631 case USB_STOR_TRANSPORT_GOOD:
632 /* Indicate a good result */
633 srb->result = SAM_STAT_GOOD;
634 break;
635
636 case USB_STOR_TRANSPORT_NO_SENSE:
637 usb_stor_dbg(us, "-- transport indicates protocol failure\n");
638 srb->result = SAM_STAT_CHECK_CONDITION;
639 return;
640
641 case USB_STOR_TRANSPORT_FAILED:
642 usb_stor_dbg(us, "-- transport indicates command failure\n");
643 need_auto_sense = 1;
644 break;
645
646 case USB_STOR_TRANSPORT_ERROR:
647 usb_stor_dbg(us, "-- transport indicates transport error\n");
648 srb->result = DID_ERROR << 16;
649 /* Need reset here */
650 return;
651
652 default:
653 usb_stor_dbg(us, "-- transport indicates unknown error\n");
654 srb->result = DID_ERROR << 16;
655 /* Need reset here */
656 return;
657 }
658
659 if ((scsi_get_resid(srb) > 0) &&
660 !((srb->cmnd[0] == REQUEST_SENSE) ||
661 (srb->cmnd[0] == INQUIRY) ||
662 (srb->cmnd[0] == MODE_SENSE) ||
663 (srb->cmnd[0] == LOG_SENSE) ||
664 (srb->cmnd[0] == MODE_SENSE_10))) {
665 usb_stor_dbg(us, "-- unexpectedly short transfer\n");
666 need_auto_sense = 1;
667 }
668
669 if (need_auto_sense) {
670 result = isd200_read_regs(us);
671 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
672 usb_stor_dbg(us, "-- auto-sense aborted\n");
673 goto Handle_Abort;
674 }
675 if (result == ISD200_GOOD) {
676 isd200_build_sense(us, srb);
677 srb->result = SAM_STAT_CHECK_CONDITION;
678
679 /* If things are really okay, then let's show that */
680 if ((srb->sense_buffer[2] & 0xf) == 0x0)
681 srb->result = SAM_STAT_GOOD;
682 } else {
683 srb->result = DID_ERROR << 16;
684 /* Need reset here */
685 }
686 }
687
688 /*
689 * Regardless of auto-sense, if we _know_ we have an error
690 * condition, show that in the result code
691 */
692 if (transferStatus == USB_STOR_TRANSPORT_FAILED)
693 srb->result = SAM_STAT_CHECK_CONDITION;
694 return;
695
696 /*
697 * abort processing: the bulk-only transport requires a reset
698 * following an abort
699 */
700 Handle_Abort:
701 srb->result = DID_ABORT << 16;
702
703 /* permit the reset transfer to take place */
704 clear_bit(US_FLIDX_ABORTING, &us->dflags);
705 /* Need reset here */
706}
707
708#ifdef CONFIG_USB_STORAGE_DEBUG
709static void isd200_log_config(struct us_data *us, struct isd200_info *info)
710{
711 usb_stor_dbg(us, " Event Notification: 0x%x\n",
712 info->ConfigData.EventNotification);
713 usb_stor_dbg(us, " External Clock: 0x%x\n",
714 info->ConfigData.ExternalClock);
715 usb_stor_dbg(us, " ATA Init Timeout: 0x%x\n",
716 info->ConfigData.ATAInitTimeout);
717 usb_stor_dbg(us, " ATAPI Command Block Size: 0x%x\n",
718 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
719 usb_stor_dbg(us, " Master/Slave Selection: 0x%x\n",
720 info->ConfigData.ATAConfig & ATACFG_MASTER);
721 usb_stor_dbg(us, " ATAPI Reset: 0x%x\n",
722 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
723 usb_stor_dbg(us, " ATA Timing: 0x%x\n",
724 info->ConfigData.ATAConfig & ATACFG_TIMING);
725 usb_stor_dbg(us, " ATA Major Command: 0x%x\n",
726 info->ConfigData.ATAMajorCommand);
727 usb_stor_dbg(us, " ATA Minor Command: 0x%x\n",
728 info->ConfigData.ATAMinorCommand);
729 usb_stor_dbg(us, " Init Status: 0x%x\n",
730 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
731 usb_stor_dbg(us, " Config Descriptor 2: 0x%x\n",
732 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
733 usb_stor_dbg(us, " Skip Device Boot: 0x%x\n",
734 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
735 usb_stor_dbg(us, " ATA 3 State Suspend: 0x%x\n",
736 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
737 usb_stor_dbg(us, " Descriptor Override: 0x%x\n",
738 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
739 usb_stor_dbg(us, " Last LUN Identifier: 0x%x\n",
740 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
741 usb_stor_dbg(us, " SRST Enable: 0x%x\n",
742 info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
743}
744#endif
745
746/**************************************************************************
747 * isd200_write_config
748 *
749 * Write the ISD200 Configuration data
750 *
751 * RETURNS:
752 * ISD status code
753 */
754static int isd200_write_config( struct us_data *us )
755{
756 struct isd200_info *info = (struct isd200_info *)us->extra;
757 int retStatus = ISD200_GOOD;
758 int result;
759
760#ifdef CONFIG_USB_STORAGE_DEBUG
761 usb_stor_dbg(us, "Entering isd200_write_config\n");
762 usb_stor_dbg(us, " Writing the following ISD200 Config Data:\n");
763 isd200_log_config(us, info);
764#endif
765
766 /* let's send the command via the control pipe */
767 result = usb_stor_ctrl_transfer(
768 us,
769 us->send_ctrl_pipe,
770 0x01,
771 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
772 0x0000,
773 0x0002,
774 (void *) &info->ConfigData,
775 sizeof(info->ConfigData));
776
777 if (result >= 0) {
778 usb_stor_dbg(us, " ISD200 Config Data was written successfully\n");
779 } else {
780 usb_stor_dbg(us, " Request to write ISD200 Config Data failed!\n");
781 retStatus = ISD200_ERROR;
782 }
783
784 usb_stor_dbg(us, "Leaving isd200_write_config %08X\n", retStatus);
785 return retStatus;
786}
787
788
789/**************************************************************************
790 * isd200_read_config
791 *
792 * Reads the ISD200 Configuration data
793 *
794 * RETURNS:
795 * ISD status code
796 */
797static int isd200_read_config( struct us_data *us )
798{
799 struct isd200_info *info = (struct isd200_info *)us->extra;
800 int retStatus = ISD200_GOOD;
801 int result;
802
803 usb_stor_dbg(us, "Entering isd200_read_config\n");
804
805 /* read the configuration information from ISD200. Use this to */
806 /* determine what the special ATA CDB bytes are. */
807
808 result = usb_stor_ctrl_transfer(
809 us,
810 us->recv_ctrl_pipe,
811 0x02,
812 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
813 0x0000,
814 0x0002,
815 (void *) &info->ConfigData,
816 sizeof(info->ConfigData));
817
818
819 if (result >= 0) {
820 usb_stor_dbg(us, " Retrieved the following ISD200 Config Data:\n");
821#ifdef CONFIG_USB_STORAGE_DEBUG
822 isd200_log_config(us, info);
823#endif
824 } else {
825 usb_stor_dbg(us, " Request to get ISD200 Config Data failed!\n");
826 retStatus = ISD200_ERROR;
827 }
828
829 usb_stor_dbg(us, "Leaving isd200_read_config %08X\n", retStatus);
830 return retStatus;
831}
832
833
834/**************************************************************************
835 * isd200_atapi_soft_reset
836 *
837 * Perform an Atapi Soft Reset on the device
838 *
839 * RETURNS:
840 * NT status code
841 */
842static int isd200_atapi_soft_reset( struct us_data *us )
843{
844 int retStatus = ISD200_GOOD;
845 int transferStatus;
846
847 usb_stor_dbg(us, "Entering isd200_atapi_soft_reset\n");
848
849 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
850 if (transferStatus != ISD200_TRANSPORT_GOOD) {
851 usb_stor_dbg(us, " Error issuing Atapi Soft Reset\n");
852 retStatus = ISD200_ERROR;
853 }
854
855 usb_stor_dbg(us, "Leaving isd200_atapi_soft_reset %08X\n", retStatus);
856 return retStatus;
857}
858
859
860/**************************************************************************
861 * isd200_srst
862 *
863 * Perform an SRST on the device
864 *
865 * RETURNS:
866 * ISD status code
867 */
868static int isd200_srst( struct us_data *us )
869{
870 int retStatus = ISD200_GOOD;
871 int transferStatus;
872
873 usb_stor_dbg(us, "Entering isd200_SRST\n");
874
875 transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
876
877 /* check to see if this request failed */
878 if (transferStatus != ISD200_TRANSPORT_GOOD) {
879 usb_stor_dbg(us, " Error issuing SRST\n");
880 retStatus = ISD200_ERROR;
881 } else {
882 /* delay 10ms to give the drive a chance to see it */
883 msleep(10);
884
885 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
886 if (transferStatus != ISD200_TRANSPORT_GOOD) {
887 usb_stor_dbg(us, " Error taking drive out of reset\n");
888 retStatus = ISD200_ERROR;
889 } else {
890 /* delay 50ms to give the drive a chance to recover after SRST */
891 msleep(50);
892 }
893 }
894
895 usb_stor_dbg(us, "Leaving isd200_srst %08X\n", retStatus);
896 return retStatus;
897}
898
899
900/**************************************************************************
901 * isd200_try_enum
902 *
903 * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
904 * and tries to analyze the status registers
905 *
906 * RETURNS:
907 * ISD status code
908 */
909static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
910 int detect )
911{
912 int status = ISD200_GOOD;
913 unsigned long endTime;
914 struct isd200_info *info = (struct isd200_info *)us->extra;
915 unsigned char *regs = info->RegsBuf;
916 int recheckAsMaster = 0;
917
918 if ( detect )
919 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
920 else
921 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
922
923 /* loop until we detect !BSY or timeout */
924 while(1) {
925
926 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
927 if ( status != ISD200_GOOD )
928 break;
929
930 status = isd200_action( us, ACTION_READ_STATUS,
931 regs, 8 );
932 if ( status != ISD200_GOOD )
933 break;
934
935 if (!detect) {
936 if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) {
937 usb_stor_dbg(us, " %s status is still BSY, try again...\n",
938 master_slave == ATA_ADDRESS_DEVHEAD_STD ?
939 "Master" : "Slave");
940 } else {
941 usb_stor_dbg(us, " %s status !BSY, continue with next operation\n",
942 master_slave == ATA_ADDRESS_DEVHEAD_STD ?
943 "Master" : "Slave");
944 break;
945 }
946 }
947 /* check for ATA_BUSY and */
948 /* ATA_DF (workaround ATA Zip drive) and */
949 /* ATA_ERR (workaround for Archos CD-ROM) */
950 else if (regs[ATA_REG_STATUS_OFFSET] &
951 (ATA_BUSY | ATA_DF | ATA_ERR)) {
952 usb_stor_dbg(us, " Status indicates it is not ready, try again...\n");
953 }
954 /* check for DRDY, ATA devices set DRDY after SRST */
955 else if (regs[ATA_REG_STATUS_OFFSET] & ATA_DRDY) {
956 usb_stor_dbg(us, " Identified ATA device\n");
957 info->DeviceFlags |= DF_ATA_DEVICE;
958 info->DeviceHead = master_slave;
959 break;
960 }
961 /*
962 * check Cylinder High/Low to
963 * determine if it is an ATAPI device
964 */
965 else if (regs[ATA_REG_HCYL_OFFSET] == 0xEB &&
966 regs[ATA_REG_LCYL_OFFSET] == 0x14) {
967 /*
968 * It seems that the RICOH
969 * MP6200A CD/RW drive will
970 * report itself okay as a
971 * slave when it is really a
972 * master. So this check again
973 * as a master device just to
974 * make sure it doesn't report
975 * itself okay as a master also
976 */
977 if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
978 !recheckAsMaster) {
979 usb_stor_dbg(us, " Identified ATAPI device as slave. Rechecking again as master\n");
980 recheckAsMaster = 1;
981 master_slave = ATA_ADDRESS_DEVHEAD_STD;
982 } else {
983 usb_stor_dbg(us, " Identified ATAPI device\n");
984 info->DeviceHead = master_slave;
985
986 status = isd200_atapi_soft_reset(us);
987 break;
988 }
989 } else {
990 usb_stor_dbg(us, " Not ATA, not ATAPI - Weird\n");
991 break;
992 }
993
994 /* check for timeout on this request */
995 if (time_after_eq(jiffies, endTime)) {
996 if (!detect)
997 usb_stor_dbg(us, " BSY check timeout, just continue with next operation...\n");
998 else
999 usb_stor_dbg(us, " Device detect timeout!\n");
1000 break;
1001 }
1002 }
1003
1004 return status;
1005}
1006
1007/**************************************************************************
1008 * isd200_manual_enum
1009 *
1010 * Determines if the drive attached is an ATA or ATAPI and if it is a
1011 * master or slave.
1012 *
1013 * RETURNS:
1014 * ISD status code
1015 */
1016static int isd200_manual_enum(struct us_data *us)
1017{
1018 struct isd200_info *info = (struct isd200_info *)us->extra;
1019 int retStatus = ISD200_GOOD;
1020
1021 usb_stor_dbg(us, "Entering isd200_manual_enum\n");
1022
1023 retStatus = isd200_read_config(us);
1024 if (retStatus == ISD200_GOOD) {
1025 int isslave;
1026 /* master or slave? */
1027 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
1028 if (retStatus == ISD200_GOOD)
1029 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
1030
1031 if (retStatus == ISD200_GOOD) {
1032 retStatus = isd200_srst(us);
1033 if (retStatus == ISD200_GOOD)
1034 /* ata or atapi? */
1035 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
1036 }
1037
1038 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
1039 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
1040 usb_stor_dbg(us, " Setting Master/Slave selection to %d\n",
1041 isslave);
1042 info->ConfigData.ATAConfig &= 0x3f;
1043 info->ConfigData.ATAConfig |= (isslave<<6);
1044 retStatus = isd200_write_config(us);
1045 }
1046 }
1047
1048 usb_stor_dbg(us, "Leaving isd200_manual_enum %08X\n", retStatus);
1049 return(retStatus);
1050}
1051
1052static void isd200_fix_driveid(u16 *id)
1053{
1054#ifndef __LITTLE_ENDIAN
1055# ifdef __BIG_ENDIAN
1056 int i;
1057
1058 for (i = 0; i < ATA_ID_WORDS; i++)
1059 id[i] = __le16_to_cpu(id[i]);
1060# else
1061# error "Please fix <asm/byteorder.h>"
1062# endif
1063#endif
1064}
1065
1066static void isd200_dump_driveid(struct us_data *us, u16 *id)
1067{
1068 usb_stor_dbg(us, " Identify Data Structure:\n");
1069 usb_stor_dbg(us, " config = 0x%x\n", id[ATA_ID_CONFIG]);
1070 usb_stor_dbg(us, " cyls = 0x%x\n", id[ATA_ID_CYLS]);
1071 usb_stor_dbg(us, " heads = 0x%x\n", id[ATA_ID_HEADS]);
1072 usb_stor_dbg(us, " track_bytes = 0x%x\n", id[4]);
1073 usb_stor_dbg(us, " sector_bytes = 0x%x\n", id[5]);
1074 usb_stor_dbg(us, " sectors = 0x%x\n", id[ATA_ID_SECTORS]);
1075 usb_stor_dbg(us, " serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]);
1076 usb_stor_dbg(us, " buf_type = 0x%x\n", id[20]);
1077 usb_stor_dbg(us, " buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]);
1078 usb_stor_dbg(us, " ecc_bytes = 0x%x\n", id[22]);
1079 usb_stor_dbg(us, " fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]);
1080 usb_stor_dbg(us, " model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]);
1081 usb_stor_dbg(us, " max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff);
1082 usb_stor_dbg(us, " dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]);
1083 usb_stor_dbg(us, " capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8);
1084 usb_stor_dbg(us, " tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8);
1085 usb_stor_dbg(us, " tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8);
1086 usb_stor_dbg(us, " field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]);
1087 usb_stor_dbg(us, " cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]);
1088 usb_stor_dbg(us, " cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]);
1089 usb_stor_dbg(us, " cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]);
1090 usb_stor_dbg(us, " cur_capacity = 0x%x\n", ata_id_u32(id, 57));
1091 usb_stor_dbg(us, " multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff);
1092 usb_stor_dbg(us, " lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY));
1093 usb_stor_dbg(us, " command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]);
1094 usb_stor_dbg(us, " command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]);
1095}
1096
1097/**************************************************************************
1098 * isd200_get_inquiry_data
1099 *
1100 * Get inquiry data
1101 *
1102 * RETURNS:
1103 * ISD status code
1104 */
1105static int isd200_get_inquiry_data( struct us_data *us )
1106{
1107 struct isd200_info *info = (struct isd200_info *)us->extra;
1108 int retStatus;
1109 u16 *id = info->id;
1110
1111 usb_stor_dbg(us, "Entering isd200_get_inquiry_data\n");
1112
1113 /* set default to Master */
1114 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1115
1116 /* attempt to manually enumerate this device */
1117 retStatus = isd200_manual_enum(us);
1118 if (retStatus == ISD200_GOOD) {
1119 int transferStatus;
1120
1121 /* check for an ATA device */
1122 if (info->DeviceFlags & DF_ATA_DEVICE) {
1123 /* this must be an ATA device */
1124 /* perform an ATA Command Identify */
1125 transferStatus = isd200_action( us, ACTION_IDENTIFY,
1126 id, ATA_ID_WORDS * 2);
1127 if (transferStatus != ISD200_TRANSPORT_GOOD) {
1128 /* Error issuing ATA Command Identify */
1129 usb_stor_dbg(us, " Error issuing ATA Command Identify\n");
1130 retStatus = ISD200_ERROR;
1131 } else {
1132 /* ATA Command Identify successful */
1133 int i;
1134 __be16 *src;
1135 __u16 *dest;
1136
1137 isd200_fix_driveid(id);
1138 isd200_dump_driveid(us, id);
1139
1140 /* Prevent division by 0 in isd200_scsi_to_ata() */
1141 if (id[ATA_ID_HEADS] == 0 || id[ATA_ID_SECTORS] == 0) {
1142 usb_stor_dbg(us, " Invalid ATA Identify data\n");
1143 retStatus = ISD200_ERROR;
1144 goto Done;
1145 }
1146
1147 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1148
1149 /* Standard IDE interface only supports disks */
1150 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1151
1152 /* The length must be at least 36 (5 + 31) */
1153 info->InquiryData.AdditionalLength = 0x1F;
1154
1155 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) {
1156 /* set the removable bit */
1157 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1158 info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1159 }
1160
1161 /* Fill in vendor identification fields */
1162 src = (__be16 *)&id[ATA_ID_PROD];
1163 dest = (__u16*)info->InquiryData.VendorId;
1164 for (i = 0; i < 4; i++)
1165 dest[i] = be16_to_cpu(src[i]);
1166
1167 src = (__be16 *)&id[ATA_ID_PROD + 8/2];
1168 dest = (__u16*)info->InquiryData.ProductId;
1169 for (i=0;i<8;i++)
1170 dest[i] = be16_to_cpu(src[i]);
1171
1172 src = (__be16 *)&id[ATA_ID_FW_REV];
1173 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1174 for (i=0;i<2;i++)
1175 dest[i] = be16_to_cpu(src[i]);
1176
1177 /* determine if it supports Media Status Notification */
1178 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) {
1179 usb_stor_dbg(us, " Device supports Media Status Notification\n");
1180
1181 /*
1182 * Indicate that it is enabled, even
1183 * though it is not.
1184 * This allows the lock/unlock of the
1185 * media to work correctly.
1186 */
1187 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1188 }
1189 else
1190 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1191
1192 }
1193 } else {
1194 /*
1195 * this must be an ATAPI device
1196 * use an ATAPI protocol (Transparent SCSI)
1197 */
1198 us->protocol_name = "Transparent SCSI";
1199 us->proto_handler = usb_stor_transparent_scsi_command;
1200
1201 usb_stor_dbg(us, "Protocol changed to: %s\n",
1202 us->protocol_name);
1203
1204 /* Free driver structure */
1205 us->extra_destructor(info);
1206 kfree(info);
1207 us->extra = NULL;
1208 us->extra_destructor = NULL;
1209 }
1210 }
1211
1212 Done:
1213 usb_stor_dbg(us, "Leaving isd200_get_inquiry_data %08X\n", retStatus);
1214
1215 return(retStatus);
1216}
1217
1218/**************************************************************************
1219 * isd200_scsi_to_ata
1220 *
1221 * Translate SCSI commands to ATA commands.
1222 *
1223 * RETURNS:
1224 * 1 if the command needs to be sent to the transport layer
1225 * 0 otherwise
1226 */
1227static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1228 union ata_cdb * ataCdb)
1229{
1230 struct isd200_info *info = (struct isd200_info *)us->extra;
1231 u16 *id = info->id;
1232 int sendToTransport = 1;
1233 unsigned char sectnum, head;
1234 unsigned short cylinder;
1235 unsigned long lba;
1236 unsigned long blockCount;
1237 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1238
1239 memset(ataCdb, 0, sizeof(union ata_cdb));
1240
1241 /* SCSI Command */
1242 switch (srb->cmnd[0]) {
1243 case INQUIRY:
1244 usb_stor_dbg(us, " ATA OUT - INQUIRY\n");
1245
1246 /* copy InquiryData */
1247 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1248 sizeof(info->InquiryData), srb);
1249 srb->result = SAM_STAT_GOOD;
1250 sendToTransport = 0;
1251 break;
1252
1253 case MODE_SENSE:
1254 usb_stor_dbg(us, " ATA OUT - SCSIOP_MODE_SENSE\n");
1255
1256 /* Initialize the return buffer */
1257 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1258
1259 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1260 {
1261 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1262 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1263 ataCdb->generic.TransferBlockSize = 1;
1264 ataCdb->generic.RegisterSelect = REG_COMMAND;
1265 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1266 isd200_srb_set_bufflen(srb, 0);
1267 } else {
1268 usb_stor_dbg(us, " Media Status not supported, just report okay\n");
1269 srb->result = SAM_STAT_GOOD;
1270 sendToTransport = 0;
1271 }
1272 break;
1273
1274 case TEST_UNIT_READY:
1275 usb_stor_dbg(us, " ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1276
1277 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1278 {
1279 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1280 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1281 ataCdb->generic.TransferBlockSize = 1;
1282 ataCdb->generic.RegisterSelect = REG_COMMAND;
1283 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1284 isd200_srb_set_bufflen(srb, 0);
1285 } else {
1286 usb_stor_dbg(us, " Media Status not supported, just report okay\n");
1287 srb->result = SAM_STAT_GOOD;
1288 sendToTransport = 0;
1289 }
1290 break;
1291
1292 case READ_CAPACITY:
1293 {
1294 unsigned long capacity;
1295 struct read_capacity_data readCapacityData;
1296
1297 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ_CAPACITY\n");
1298
1299 if (ata_id_has_lba(id))
1300 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1;
1301 else
1302 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] *
1303 id[ATA_ID_SECTORS]) - 1;
1304
1305 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1306 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1307
1308 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1309 sizeof(readCapacityData), srb);
1310 srb->result = SAM_STAT_GOOD;
1311 sendToTransport = 0;
1312 }
1313 break;
1314
1315 case READ_10:
1316 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ\n");
1317
1318 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1319 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1320
1321 if (ata_id_has_lba(id)) {
1322 sectnum = (unsigned char)(lba);
1323 cylinder = (unsigned short)(lba>>8);
1324 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1325 } else {
1326 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1327 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1328 id[ATA_ID_HEADS]));
1329 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1330 id[ATA_ID_HEADS]);
1331 }
1332 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1333 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1334 ataCdb->generic.TransferBlockSize = 1;
1335 ataCdb->generic.RegisterSelect =
1336 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1337 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1338 REG_DEVICE_HEAD | REG_COMMAND;
1339 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1340 ataCdb->write.SectorNumberByte = sectnum;
1341 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1342 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1343 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1344 ataCdb->write.CommandByte = ATA_CMD_PIO_READ;
1345 break;
1346
1347 case WRITE_10:
1348 usb_stor_dbg(us, " ATA OUT - SCSIOP_WRITE\n");
1349
1350 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1351 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1352
1353 if (ata_id_has_lba(id)) {
1354 sectnum = (unsigned char)(lba);
1355 cylinder = (unsigned short)(lba>>8);
1356 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1357 } else {
1358 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1359 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1360 id[ATA_ID_HEADS]));
1361 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1362 id[ATA_ID_HEADS]);
1363 }
1364 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1365 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1366 ataCdb->generic.TransferBlockSize = 1;
1367 ataCdb->generic.RegisterSelect =
1368 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1369 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1370 REG_DEVICE_HEAD | REG_COMMAND;
1371 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1372 ataCdb->write.SectorNumberByte = sectnum;
1373 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1374 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1375 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1376 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE;
1377 break;
1378
1379 case ALLOW_MEDIUM_REMOVAL:
1380 usb_stor_dbg(us, " ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1381
1382 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1383 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n",
1384 srb->cmnd[4]);
1385
1386 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1387 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1388 ataCdb->generic.TransferBlockSize = 1;
1389 ataCdb->generic.RegisterSelect = REG_COMMAND;
1390 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1391 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
1392 isd200_srb_set_bufflen(srb, 0);
1393 } else {
1394 usb_stor_dbg(us, " Not removable media, just report okay\n");
1395 srb->result = SAM_STAT_GOOD;
1396 sendToTransport = 0;
1397 }
1398 break;
1399
1400 case START_STOP:
1401 usb_stor_dbg(us, " ATA OUT - SCSIOP_START_STOP_UNIT\n");
1402 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1403
1404 if ((srb->cmnd[4] & 0x3) == 0x2) {
1405 usb_stor_dbg(us, " Media Eject\n");
1406 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1407 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1408 ataCdb->generic.TransferBlockSize = 0;
1409 ataCdb->generic.RegisterSelect = REG_COMMAND;
1410 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1411 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1412 usb_stor_dbg(us, " Get Media Status\n");
1413 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1414 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1415 ataCdb->generic.TransferBlockSize = 1;
1416 ataCdb->generic.RegisterSelect = REG_COMMAND;
1417 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1418 isd200_srb_set_bufflen(srb, 0);
1419 } else {
1420 usb_stor_dbg(us, " Nothing to do, just report okay\n");
1421 srb->result = SAM_STAT_GOOD;
1422 sendToTransport = 0;
1423 }
1424 break;
1425
1426 default:
1427 usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n",
1428 srb->cmnd[0]);
1429 srb->result = DID_ERROR << 16;
1430 sendToTransport = 0;
1431 break;
1432 }
1433
1434 return(sendToTransport);
1435}
1436
1437
1438/**************************************************************************
1439 * isd200_free_info
1440 *
1441 * Frees the driver structure.
1442 */
1443static void isd200_free_info_ptrs(void *info_)
1444{
1445 struct isd200_info *info = (struct isd200_info *) info_;
1446
1447 if (info) {
1448 kfree(info->id);
1449 kfree(info->RegsBuf);
1450 kfree(info->srb.sense_buffer);
1451 }
1452}
1453
1454/**************************************************************************
1455 * isd200_init_info
1456 *
1457 * Allocates (if necessary) and initializes the driver structure.
1458 *
1459 * RETURNS:
1460 * error status code
1461 */
1462static int isd200_init_info(struct us_data *us)
1463{
1464 struct isd200_info *info;
1465
1466 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1467 if (!info)
1468 return -ENOMEM;
1469
1470 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
1471 info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1472 info->srb.sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1473
1474 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1475 isd200_free_info_ptrs(info);
1476 kfree(info);
1477 return -ENOMEM;
1478 }
1479
1480 us->extra = info;
1481 us->extra_destructor = isd200_free_info_ptrs;
1482
1483 return 0;
1484}
1485
1486/**************************************************************************
1487 * Initialization for the ISD200
1488 */
1489
1490static int isd200_Initialization(struct us_data *us)
1491{
1492 int rc = 0;
1493
1494 usb_stor_dbg(us, "ISD200 Initialization...\n");
1495
1496 /* Initialize ISD200 info struct */
1497
1498 if (isd200_init_info(us) < 0) {
1499 usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n");
1500 rc = -ENOMEM;
1501 } else {
1502 /* Get device specific data */
1503
1504 if (isd200_get_inquiry_data(us) != ISD200_GOOD) {
1505 usb_stor_dbg(us, "ISD200 Initialization Failure\n");
1506 rc = -EINVAL;
1507 } else {
1508 usb_stor_dbg(us, "ISD200 Initialization complete\n");
1509 }
1510 }
1511
1512 return rc;
1513}
1514
1515
1516/**************************************************************************
1517 * Protocol and Transport for the ISD200 ASIC
1518 *
1519 * This protocol and transport are for ATA devices connected to an ISD200
1520 * ASIC. An ATAPI device that is connected as a slave device will be
1521 * detected in the driver initialization function and the protocol will
1522 * be changed to an ATAPI protocol (Transparent SCSI).
1523 *
1524 */
1525
1526static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1527{
1528 int sendToTransport, orig_bufflen;
1529 union ata_cdb ataCdb;
1530
1531 /* Make sure driver was initialized */
1532
1533 if (us->extra == NULL) {
1534 usb_stor_dbg(us, "ERROR Driver not initialized\n");
1535 srb->result = DID_ERROR << 16;
1536 return;
1537 }
1538
1539 scsi_set_resid(srb, 0);
1540 /* scsi_bufflen might change in protocol translation to ata */
1541 orig_bufflen = scsi_bufflen(srb);
1542 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1543
1544 /* send the command to the transport layer */
1545 if (sendToTransport)
1546 isd200_invoke_transport(us, srb, &ataCdb);
1547
1548 isd200_srb_set_bufflen(srb, orig_bufflen);
1549}
1550
1551static struct scsi_host_template isd200_host_template;
1552
1553static int isd200_probe(struct usb_interface *intf,
1554 const struct usb_device_id *id)
1555{
1556 struct us_data *us;
1557 int result;
1558
1559 result = usb_stor_probe1(&us, intf, id,
1560 (id - isd200_usb_ids) + isd200_unusual_dev_list,
1561 &isd200_host_template);
1562 if (result)
1563 return result;
1564
1565 us->protocol_name = "ISD200 ATA/ATAPI";
1566 us->proto_handler = isd200_ata_command;
1567
1568 result = usb_stor_probe2(us);
1569 return result;
1570}
1571
1572static struct usb_driver isd200_driver = {
1573 .name = DRV_NAME,
1574 .probe = isd200_probe,
1575 .disconnect = usb_stor_disconnect,
1576 .suspend = usb_stor_suspend,
1577 .resume = usb_stor_resume,
1578 .reset_resume = usb_stor_reset_resume,
1579 .pre_reset = usb_stor_pre_reset,
1580 .post_reset = usb_stor_post_reset,
1581 .id_table = isd200_usb_ids,
1582 .soft_unbind = 1,
1583 .no_dynamic_id = 1,
1584};
1585
1586module_usb_stor_driver(isd200_driver, isd200_host_template, DRV_NAME);
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
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 * History:
19 *
20 * 2002-10-19: Removed the specialized transfer routines.
21 * (Alan Stern <stern@rowland.harvard.edu>)
22 * 2001-02-24: Removed lots of duplicate code and simplified the structure.
23 * (bjorn@haxx.se)
24 * 2002-01-16: Fixed endianness bug so it works on the ppc arch.
25 * (Luc Saillard <luc@saillard.org>)
26 * 2002-01-17: All bitfields removed.
27 * (bjorn@haxx.se)
28 */
29
30
31/* Include files */
32
33#include <linux/jiffies.h>
34#include <linux/errno.h>
35#include <linux/module.h>
36#include <linux/slab.h>
37#include <linux/ata.h>
38#include <linux/hdreg.h>
39#include <linux/scatterlist.h>
40
41#include <scsi/scsi.h>
42#include <scsi/scsi_cmnd.h>
43#include <scsi/scsi_device.h>
44
45#include "usb.h"
46#include "transport.h"
47#include "protocol.h"
48#include "debug.h"
49#include "scsiglue.h"
50
51#define DRV_NAME "ums-isd200"
52
53MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
54MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>");
55MODULE_LICENSE("GPL");
56
57static int isd200_Initialization(struct us_data *us);
58
59
60/*
61 * The table of devices
62 */
63#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
64 vendorName, productName, useProtocol, useTransport, \
65 initFunction, flags) \
66{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
67 .driver_info = (flags) }
68
69static struct usb_device_id isd200_usb_ids[] = {
70# include "unusual_isd200.h"
71 { } /* Terminating entry */
72};
73MODULE_DEVICE_TABLE(usb, isd200_usb_ids);
74
75#undef UNUSUAL_DEV
76
77/*
78 * The flags table
79 */
80#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
81 vendor_name, product_name, use_protocol, use_transport, \
82 init_function, Flags) \
83{ \
84 .vendorName = vendor_name, \
85 .productName = product_name, \
86 .useProtocol = use_protocol, \
87 .useTransport = use_transport, \
88 .initFunction = init_function, \
89}
90
91static struct us_unusual_dev isd200_unusual_dev_list[] = {
92# include "unusual_isd200.h"
93 { } /* Terminating entry */
94};
95
96#undef UNUSUAL_DEV
97
98/* Timeout defines (in Seconds) */
99
100#define ISD200_ENUM_BSY_TIMEOUT 35
101#define ISD200_ENUM_DETECT_TIMEOUT 30
102#define ISD200_DEFAULT_TIMEOUT 30
103
104/* device flags */
105#define DF_ATA_DEVICE 0x0001
106#define DF_MEDIA_STATUS_ENABLED 0x0002
107#define DF_REMOVABLE_MEDIA 0x0004
108
109/* capability bit definitions */
110#define CAPABILITY_DMA 0x01
111#define CAPABILITY_LBA 0x02
112
113/* command_setX bit definitions */
114#define COMMANDSET_REMOVABLE 0x02
115#define COMMANDSET_MEDIA_STATUS 0x10
116
117/* ATA Vendor Specific defines */
118#define ATA_ADDRESS_DEVHEAD_STD 0xa0
119#define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
120#define ATA_ADDRESS_DEVHEAD_SLAVE 0x10
121
122/* Action Select bits */
123#define ACTION_SELECT_0 0x01
124#define ACTION_SELECT_1 0x02
125#define ACTION_SELECT_2 0x04
126#define ACTION_SELECT_3 0x08
127#define ACTION_SELECT_4 0x10
128#define ACTION_SELECT_5 0x20
129#define ACTION_SELECT_6 0x40
130#define ACTION_SELECT_7 0x80
131
132/* Register Select bits */
133#define REG_ALTERNATE_STATUS 0x01
134#define REG_DEVICE_CONTROL 0x01
135#define REG_ERROR 0x02
136#define REG_FEATURES 0x02
137#define REG_SECTOR_COUNT 0x04
138#define REG_SECTOR_NUMBER 0x08
139#define REG_CYLINDER_LOW 0x10
140#define REG_CYLINDER_HIGH 0x20
141#define REG_DEVICE_HEAD 0x40
142#define REG_STATUS 0x80
143#define REG_COMMAND 0x80
144
145/* ATA registers offset definitions */
146#define ATA_REG_ERROR_OFFSET 1
147#define ATA_REG_LCYL_OFFSET 4
148#define ATA_REG_HCYL_OFFSET 5
149#define ATA_REG_STATUS_OFFSET 7
150
151/* ATA error definitions not in <linux/hdreg.h> */
152#define ATA_ERROR_MEDIA_CHANGE 0x20
153
154/* ATA command definitions not in <linux/hdreg.h> */
155#define ATA_COMMAND_GET_MEDIA_STATUS 0xDA
156#define ATA_COMMAND_MEDIA_EJECT 0xED
157
158/* ATA drive control definitions */
159#define ATA_DC_DISABLE_INTERRUPTS 0x02
160#define ATA_DC_RESET_CONTROLLER 0x04
161#define ATA_DC_REENABLE_CONTROLLER 0x00
162
163/*
164 * General purpose return codes
165 */
166
167#define ISD200_ERROR -1
168#define ISD200_GOOD 0
169
170/*
171 * Transport return codes
172 */
173
174#define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */
175#define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */
176#define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
177
178/* driver action codes */
179#define ACTION_READ_STATUS 0
180#define ACTION_RESET 1
181#define ACTION_REENABLE 2
182#define ACTION_SOFT_RESET 3
183#define ACTION_ENUM 4
184#define ACTION_IDENTIFY 5
185
186
187/*
188 * ata_cdb struct
189 */
190
191
192union ata_cdb {
193 struct {
194 unsigned char SignatureByte0;
195 unsigned char SignatureByte1;
196 unsigned char ActionSelect;
197 unsigned char RegisterSelect;
198 unsigned char TransferBlockSize;
199 unsigned char WriteData3F6;
200 unsigned char WriteData1F1;
201 unsigned char WriteData1F2;
202 unsigned char WriteData1F3;
203 unsigned char WriteData1F4;
204 unsigned char WriteData1F5;
205 unsigned char WriteData1F6;
206 unsigned char WriteData1F7;
207 unsigned char Reserved[3];
208 } generic;
209
210 struct {
211 unsigned char SignatureByte0;
212 unsigned char SignatureByte1;
213 unsigned char ActionSelect;
214 unsigned char RegisterSelect;
215 unsigned char TransferBlockSize;
216 unsigned char AlternateStatusByte;
217 unsigned char ErrorByte;
218 unsigned char SectorCountByte;
219 unsigned char SectorNumberByte;
220 unsigned char CylinderLowByte;
221 unsigned char CylinderHighByte;
222 unsigned char DeviceHeadByte;
223 unsigned char StatusByte;
224 unsigned char Reserved[3];
225 } read;
226
227 struct {
228 unsigned char SignatureByte0;
229 unsigned char SignatureByte1;
230 unsigned char ActionSelect;
231 unsigned char RegisterSelect;
232 unsigned char TransferBlockSize;
233 unsigned char DeviceControlByte;
234 unsigned char FeaturesByte;
235 unsigned char SectorCountByte;
236 unsigned char SectorNumberByte;
237 unsigned char CylinderLowByte;
238 unsigned char CylinderHighByte;
239 unsigned char DeviceHeadByte;
240 unsigned char CommandByte;
241 unsigned char Reserved[3];
242 } write;
243};
244
245
246/*
247 * Inquiry data structure. This is the data returned from the target
248 * after it receives an inquiry.
249 *
250 * This structure may be extended by the number of bytes specified
251 * in the field AdditionalLength. The defined size constant only
252 * includes fields through ProductRevisionLevel.
253 */
254
255/*
256 * DeviceType field
257 */
258#define DIRECT_ACCESS_DEVICE 0x00 /* disks */
259#define DEVICE_REMOVABLE 0x80
260
261struct inquiry_data {
262 unsigned char DeviceType;
263 unsigned char DeviceTypeModifier;
264 unsigned char Versions;
265 unsigned char Format;
266 unsigned char AdditionalLength;
267 unsigned char Reserved[2];
268 unsigned char Capability;
269 unsigned char VendorId[8];
270 unsigned char ProductId[16];
271 unsigned char ProductRevisionLevel[4];
272 unsigned char VendorSpecific[20];
273 unsigned char Reserved3[40];
274} __attribute__ ((packed));
275
276/*
277 * INQUIRY data buffer size
278 */
279
280#define INQUIRYDATABUFFERSIZE 36
281
282
283/*
284 * ISD200 CONFIG data struct
285 */
286
287#define ATACFG_TIMING 0x0f
288#define ATACFG_ATAPI_RESET 0x10
289#define ATACFG_MASTER 0x20
290#define ATACFG_BLOCKSIZE 0xa0
291
292#define ATACFGE_LAST_LUN 0x07
293#define ATACFGE_DESC_OVERRIDE 0x08
294#define ATACFGE_STATE_SUSPEND 0x10
295#define ATACFGE_SKIP_BOOT 0x20
296#define ATACFGE_CONF_DESC2 0x40
297#define ATACFGE_INIT_STATUS 0x80
298
299#define CFG_CAPABILITY_SRST 0x01
300
301struct isd200_config {
302 unsigned char EventNotification;
303 unsigned char ExternalClock;
304 unsigned char ATAInitTimeout;
305 unsigned char ATAConfig;
306 unsigned char ATAMajorCommand;
307 unsigned char ATAMinorCommand;
308 unsigned char ATAExtraConfig;
309 unsigned char Capability;
310}__attribute__ ((packed));
311
312
313/*
314 * ISD200 driver information struct
315 */
316
317struct isd200_info {
318 struct inquiry_data InquiryData;
319 u16 *id;
320 struct isd200_config ConfigData;
321 unsigned char *RegsBuf;
322 unsigned char ATARegs[8];
323 unsigned char DeviceHead;
324 unsigned char DeviceFlags;
325
326 /* maximum number of LUNs supported */
327 unsigned char MaxLUNs;
328 unsigned char cmnd[BLK_MAX_CDB];
329 struct scsi_cmnd srb;
330 struct scatterlist sg;
331};
332
333
334/*
335 * Read Capacity Data - returned in Big Endian format
336 */
337
338struct read_capacity_data {
339 __be32 LogicalBlockAddress;
340 __be32 BytesPerBlock;
341};
342
343/*
344 * Read Block Limits Data - returned in Big Endian format
345 * This structure returns the maximum and minimum block
346 * size for a TAPE device.
347 */
348
349struct read_block_limits {
350 unsigned char Reserved;
351 unsigned char BlockMaximumSize[3];
352 unsigned char BlockMinimumSize[2];
353};
354
355
356/*
357 * Sense Data Format
358 */
359
360#define SENSE_ERRCODE 0x7f
361#define SENSE_ERRCODE_VALID 0x80
362#define SENSE_FLAG_SENSE_KEY 0x0f
363#define SENSE_FLAG_BAD_LENGTH 0x20
364#define SENSE_FLAG_END_OF_MEDIA 0x40
365#define SENSE_FLAG_FILE_MARK 0x80
366struct sense_data {
367 unsigned char ErrorCode;
368 unsigned char SegmentNumber;
369 unsigned char Flags;
370 unsigned char Information[4];
371 unsigned char AdditionalSenseLength;
372 unsigned char CommandSpecificInformation[4];
373 unsigned char AdditionalSenseCode;
374 unsigned char AdditionalSenseCodeQualifier;
375 unsigned char FieldReplaceableUnitCode;
376 unsigned char SenseKeySpecific[3];
377} __attribute__ ((packed));
378
379/*
380 * Default request sense buffer size
381 */
382
383#define SENSE_BUFFER_SIZE 18
384
385/***********************************************************************
386 * Helper routines
387 ***********************************************************************/
388
389/**************************************************************************
390 * isd200_build_sense
391 *
392 * Builds an artificial sense buffer to report the results of a
393 * failed command.
394 *
395 * RETURNS:
396 * void
397 */
398static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
399{
400 struct isd200_info *info = (struct isd200_info *)us->extra;
401 struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
402 unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET];
403
404 if(error & ATA_ERROR_MEDIA_CHANGE) {
405 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
406 buf->AdditionalSenseLength = 0xb;
407 buf->Flags = UNIT_ATTENTION;
408 buf->AdditionalSenseCode = 0;
409 buf->AdditionalSenseCodeQualifier = 0;
410 } else if (error & ATA_MCR) {
411 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
412 buf->AdditionalSenseLength = 0xb;
413 buf->Flags = UNIT_ATTENTION;
414 buf->AdditionalSenseCode = 0;
415 buf->AdditionalSenseCodeQualifier = 0;
416 } else if (error & ATA_TRK0NF) {
417 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
418 buf->AdditionalSenseLength = 0xb;
419 buf->Flags = NOT_READY;
420 buf->AdditionalSenseCode = 0;
421 buf->AdditionalSenseCodeQualifier = 0;
422 } else if (error & ATA_UNC) {
423 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
424 buf->AdditionalSenseLength = 0xb;
425 buf->Flags = DATA_PROTECT;
426 buf->AdditionalSenseCode = 0;
427 buf->AdditionalSenseCodeQualifier = 0;
428 } else {
429 buf->ErrorCode = 0;
430 buf->AdditionalSenseLength = 0;
431 buf->Flags = 0;
432 buf->AdditionalSenseCode = 0;
433 buf->AdditionalSenseCodeQualifier = 0;
434 }
435}
436
437
438/***********************************************************************
439 * Transport routines
440 ***********************************************************************/
441
442/**************************************************************************
443 * isd200_set_srb(), isd200_srb_set_bufflen()
444 *
445 * Two helpers to facilitate in initialization of scsi_cmnd structure
446 * Will need to change when struct scsi_cmnd changes
447 */
448static void isd200_set_srb(struct isd200_info *info,
449 enum dma_data_direction dir, void* buff, unsigned bufflen)
450{
451 struct scsi_cmnd *srb = &info->srb;
452
453 if (buff)
454 sg_init_one(&info->sg, buff, bufflen);
455
456 srb->sc_data_direction = dir;
457 srb->sdb.table.sgl = buff ? &info->sg : NULL;
458 srb->sdb.length = bufflen;
459 srb->sdb.table.nents = buff ? 1 : 0;
460}
461
462static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen)
463{
464 srb->sdb.length = bufflen;
465}
466
467
468/**************************************************************************
469 * isd200_action
470 *
471 * Routine for sending commands to the isd200
472 *
473 * RETURNS:
474 * ISD status code
475 */
476static int isd200_action( struct us_data *us, int action,
477 void* pointer, int value )
478{
479 union ata_cdb ata;
480 /* static to prevent this large struct being placed on the valuable stack */
481 static struct scsi_device srb_dev;
482 struct isd200_info *info = (struct isd200_info *)us->extra;
483 struct scsi_cmnd *srb = &info->srb;
484 int status;
485
486 memset(&ata, 0, sizeof(ata));
487 srb->cmnd = info->cmnd;
488 srb->device = &srb_dev;
489
490 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
491 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
492 ata.generic.TransferBlockSize = 1;
493
494 switch ( action ) {
495 case ACTION_READ_STATUS:
496 usb_stor_dbg(us, " isd200_action(READ_STATUS)\n");
497 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
498 ata.generic.RegisterSelect =
499 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
500 REG_STATUS | REG_ERROR;
501 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
502 break;
503
504 case ACTION_ENUM:
505 usb_stor_dbg(us, " isd200_action(ENUM,0x%02x)\n", value);
506 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
507 ACTION_SELECT_3|ACTION_SELECT_4|
508 ACTION_SELECT_5;
509 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
510 ata.write.DeviceHeadByte = value;
511 isd200_set_srb(info, DMA_NONE, NULL, 0);
512 break;
513
514 case ACTION_RESET:
515 usb_stor_dbg(us, " isd200_action(RESET)\n");
516 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
517 ACTION_SELECT_3|ACTION_SELECT_4;
518 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
519 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
520 isd200_set_srb(info, DMA_NONE, NULL, 0);
521 break;
522
523 case ACTION_REENABLE:
524 usb_stor_dbg(us, " isd200_action(REENABLE)\n");
525 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
526 ACTION_SELECT_3|ACTION_SELECT_4;
527 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
528 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
529 isd200_set_srb(info, DMA_NONE, NULL, 0);
530 break;
531
532 case ACTION_SOFT_RESET:
533 usb_stor_dbg(us, " isd200_action(SOFT_RESET)\n");
534 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
535 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
536 ata.write.DeviceHeadByte = info->DeviceHead;
537 ata.write.CommandByte = ATA_CMD_DEV_RESET;
538 isd200_set_srb(info, DMA_NONE, NULL, 0);
539 break;
540
541 case ACTION_IDENTIFY:
542 usb_stor_dbg(us, " isd200_action(IDENTIFY)\n");
543 ata.generic.RegisterSelect = REG_COMMAND;
544 ata.write.CommandByte = ATA_CMD_ID_ATA;
545 isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
546 ATA_ID_WORDS * 2);
547 break;
548
549 default:
550 usb_stor_dbg(us, "Error: Undefined action %d\n", action);
551 return ISD200_ERROR;
552 }
553
554 memcpy(srb->cmnd, &ata, sizeof(ata.generic));
555 srb->cmd_len = sizeof(ata.generic);
556 status = usb_stor_Bulk_transport(srb, us);
557 if (status == USB_STOR_TRANSPORT_GOOD)
558 status = ISD200_GOOD;
559 else {
560 usb_stor_dbg(us, " isd200_action(0x%02x) error: %d\n",
561 action, status);
562 status = ISD200_ERROR;
563 /* need to reset device here */
564 }
565
566 return status;
567}
568
569/**************************************************************************
570 * isd200_read_regs
571 *
572 * Read ATA Registers
573 *
574 * RETURNS:
575 * ISD status code
576 */
577static int isd200_read_regs( struct us_data *us )
578{
579 struct isd200_info *info = (struct isd200_info *)us->extra;
580 int retStatus = ISD200_GOOD;
581 int transferStatus;
582
583 usb_stor_dbg(us, "Entering isd200_IssueATAReadRegs\n");
584
585 transferStatus = isd200_action( us, ACTION_READ_STATUS,
586 info->RegsBuf, sizeof(info->ATARegs) );
587 if (transferStatus != ISD200_TRANSPORT_GOOD) {
588 usb_stor_dbg(us, " Error reading ATA registers\n");
589 retStatus = ISD200_ERROR;
590 } else {
591 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
592 usb_stor_dbg(us, " Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n",
593 info->ATARegs[ATA_REG_ERROR_OFFSET]);
594 }
595
596 return retStatus;
597}
598
599
600/**************************************************************************
601 * Invoke the transport and basic error-handling/recovery methods
602 *
603 * This is used by the protocol layers to actually send the message to
604 * the device and receive the response.
605 */
606static void isd200_invoke_transport( struct us_data *us,
607 struct scsi_cmnd *srb,
608 union ata_cdb *ataCdb )
609{
610 int need_auto_sense = 0;
611 int transferStatus;
612 int result;
613
614 /* send the command to the transport layer */
615 memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
616 srb->cmd_len = sizeof(ataCdb->generic);
617 transferStatus = usb_stor_Bulk_transport(srb, us);
618
619 /*
620 * if the command gets aborted by the higher layers, we need to
621 * short-circuit all other processing
622 */
623 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
624 usb_stor_dbg(us, "-- command was aborted\n");
625 goto Handle_Abort;
626 }
627
628 switch (transferStatus) {
629
630 case USB_STOR_TRANSPORT_GOOD:
631 /* Indicate a good result */
632 srb->result = SAM_STAT_GOOD;
633 break;
634
635 case USB_STOR_TRANSPORT_NO_SENSE:
636 usb_stor_dbg(us, "-- transport indicates protocol failure\n");
637 srb->result = SAM_STAT_CHECK_CONDITION;
638 return;
639
640 case USB_STOR_TRANSPORT_FAILED:
641 usb_stor_dbg(us, "-- transport indicates command failure\n");
642 need_auto_sense = 1;
643 break;
644
645 case USB_STOR_TRANSPORT_ERROR:
646 usb_stor_dbg(us, "-- transport indicates transport error\n");
647 srb->result = DID_ERROR << 16;
648 /* Need reset here */
649 return;
650
651 default:
652 usb_stor_dbg(us, "-- transport indicates unknown error\n");
653 srb->result = DID_ERROR << 16;
654 /* Need reset here */
655 return;
656 }
657
658 if ((scsi_get_resid(srb) > 0) &&
659 !((srb->cmnd[0] == REQUEST_SENSE) ||
660 (srb->cmnd[0] == INQUIRY) ||
661 (srb->cmnd[0] == MODE_SENSE) ||
662 (srb->cmnd[0] == LOG_SENSE) ||
663 (srb->cmnd[0] == MODE_SENSE_10))) {
664 usb_stor_dbg(us, "-- unexpectedly short transfer\n");
665 need_auto_sense = 1;
666 }
667
668 if (need_auto_sense) {
669 result = isd200_read_regs(us);
670 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
671 usb_stor_dbg(us, "-- auto-sense aborted\n");
672 goto Handle_Abort;
673 }
674 if (result == ISD200_GOOD) {
675 isd200_build_sense(us, srb);
676 srb->result = SAM_STAT_CHECK_CONDITION;
677
678 /* If things are really okay, then let's show that */
679 if ((srb->sense_buffer[2] & 0xf) == 0x0)
680 srb->result = SAM_STAT_GOOD;
681 } else {
682 srb->result = DID_ERROR << 16;
683 /* Need reset here */
684 }
685 }
686
687 /*
688 * Regardless of auto-sense, if we _know_ we have an error
689 * condition, show that in the result code
690 */
691 if (transferStatus == USB_STOR_TRANSPORT_FAILED)
692 srb->result = SAM_STAT_CHECK_CONDITION;
693 return;
694
695 /*
696 * abort processing: the bulk-only transport requires a reset
697 * following an abort
698 */
699 Handle_Abort:
700 srb->result = DID_ABORT << 16;
701
702 /* permit the reset transfer to take place */
703 clear_bit(US_FLIDX_ABORTING, &us->dflags);
704 /* Need reset here */
705}
706
707#ifdef CONFIG_USB_STORAGE_DEBUG
708static void isd200_log_config(struct us_data *us, struct isd200_info *info)
709{
710 usb_stor_dbg(us, " Event Notification: 0x%x\n",
711 info->ConfigData.EventNotification);
712 usb_stor_dbg(us, " External Clock: 0x%x\n",
713 info->ConfigData.ExternalClock);
714 usb_stor_dbg(us, " ATA Init Timeout: 0x%x\n",
715 info->ConfigData.ATAInitTimeout);
716 usb_stor_dbg(us, " ATAPI Command Block Size: 0x%x\n",
717 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
718 usb_stor_dbg(us, " Master/Slave Selection: 0x%x\n",
719 info->ConfigData.ATAConfig & ATACFG_MASTER);
720 usb_stor_dbg(us, " ATAPI Reset: 0x%x\n",
721 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
722 usb_stor_dbg(us, " ATA Timing: 0x%x\n",
723 info->ConfigData.ATAConfig & ATACFG_TIMING);
724 usb_stor_dbg(us, " ATA Major Command: 0x%x\n",
725 info->ConfigData.ATAMajorCommand);
726 usb_stor_dbg(us, " ATA Minor Command: 0x%x\n",
727 info->ConfigData.ATAMinorCommand);
728 usb_stor_dbg(us, " Init Status: 0x%x\n",
729 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
730 usb_stor_dbg(us, " Config Descriptor 2: 0x%x\n",
731 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
732 usb_stor_dbg(us, " Skip Device Boot: 0x%x\n",
733 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
734 usb_stor_dbg(us, " ATA 3 State Suspend: 0x%x\n",
735 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
736 usb_stor_dbg(us, " Descriptor Override: 0x%x\n",
737 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
738 usb_stor_dbg(us, " Last LUN Identifier: 0x%x\n",
739 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
740 usb_stor_dbg(us, " SRST Enable: 0x%x\n",
741 info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
742}
743#endif
744
745/**************************************************************************
746 * isd200_write_config
747 *
748 * Write the ISD200 Configuration data
749 *
750 * RETURNS:
751 * ISD status code
752 */
753static int isd200_write_config( struct us_data *us )
754{
755 struct isd200_info *info = (struct isd200_info *)us->extra;
756 int retStatus = ISD200_GOOD;
757 int result;
758
759#ifdef CONFIG_USB_STORAGE_DEBUG
760 usb_stor_dbg(us, "Entering isd200_write_config\n");
761 usb_stor_dbg(us, " Writing the following ISD200 Config Data:\n");
762 isd200_log_config(us, info);
763#endif
764
765 /* let's send the command via the control pipe */
766 result = usb_stor_ctrl_transfer(
767 us,
768 us->send_ctrl_pipe,
769 0x01,
770 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
771 0x0000,
772 0x0002,
773 (void *) &info->ConfigData,
774 sizeof(info->ConfigData));
775
776 if (result >= 0) {
777 usb_stor_dbg(us, " ISD200 Config Data was written successfully\n");
778 } else {
779 usb_stor_dbg(us, " Request to write ISD200 Config Data failed!\n");
780 retStatus = ISD200_ERROR;
781 }
782
783 usb_stor_dbg(us, "Leaving isd200_write_config %08X\n", retStatus);
784 return retStatus;
785}
786
787
788/**************************************************************************
789 * isd200_read_config
790 *
791 * Reads the ISD200 Configuration data
792 *
793 * RETURNS:
794 * ISD status code
795 */
796static int isd200_read_config( struct us_data *us )
797{
798 struct isd200_info *info = (struct isd200_info *)us->extra;
799 int retStatus = ISD200_GOOD;
800 int result;
801
802 usb_stor_dbg(us, "Entering isd200_read_config\n");
803
804 /* read the configuration information from ISD200. Use this to */
805 /* determine what the special ATA CDB bytes are. */
806
807 result = usb_stor_ctrl_transfer(
808 us,
809 us->recv_ctrl_pipe,
810 0x02,
811 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
812 0x0000,
813 0x0002,
814 (void *) &info->ConfigData,
815 sizeof(info->ConfigData));
816
817
818 if (result >= 0) {
819 usb_stor_dbg(us, " Retrieved the following ISD200 Config Data:\n");
820#ifdef CONFIG_USB_STORAGE_DEBUG
821 isd200_log_config(us, info);
822#endif
823 } else {
824 usb_stor_dbg(us, " Request to get ISD200 Config Data failed!\n");
825 retStatus = ISD200_ERROR;
826 }
827
828 usb_stor_dbg(us, "Leaving isd200_read_config %08X\n", retStatus);
829 return retStatus;
830}
831
832
833/**************************************************************************
834 * isd200_atapi_soft_reset
835 *
836 * Perform an Atapi Soft Reset on the device
837 *
838 * RETURNS:
839 * NT status code
840 */
841static int isd200_atapi_soft_reset( struct us_data *us )
842{
843 int retStatus = ISD200_GOOD;
844 int transferStatus;
845
846 usb_stor_dbg(us, "Entering isd200_atapi_soft_reset\n");
847
848 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
849 if (transferStatus != ISD200_TRANSPORT_GOOD) {
850 usb_stor_dbg(us, " Error issuing Atapi Soft Reset\n");
851 retStatus = ISD200_ERROR;
852 }
853
854 usb_stor_dbg(us, "Leaving isd200_atapi_soft_reset %08X\n", retStatus);
855 return retStatus;
856}
857
858
859/**************************************************************************
860 * isd200_srst
861 *
862 * Perform an SRST on the device
863 *
864 * RETURNS:
865 * ISD status code
866 */
867static int isd200_srst( struct us_data *us )
868{
869 int retStatus = ISD200_GOOD;
870 int transferStatus;
871
872 usb_stor_dbg(us, "Entering isd200_SRST\n");
873
874 transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
875
876 /* check to see if this request failed */
877 if (transferStatus != ISD200_TRANSPORT_GOOD) {
878 usb_stor_dbg(us, " Error issuing SRST\n");
879 retStatus = ISD200_ERROR;
880 } else {
881 /* delay 10ms to give the drive a chance to see it */
882 msleep(10);
883
884 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
885 if (transferStatus != ISD200_TRANSPORT_GOOD) {
886 usb_stor_dbg(us, " Error taking drive out of reset\n");
887 retStatus = ISD200_ERROR;
888 } else {
889 /* delay 50ms to give the drive a chance to recover after SRST */
890 msleep(50);
891 }
892 }
893
894 usb_stor_dbg(us, "Leaving isd200_srst %08X\n", retStatus);
895 return retStatus;
896}
897
898
899/**************************************************************************
900 * isd200_try_enum
901 *
902 * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
903 * and tries to analyze the status registers
904 *
905 * RETURNS:
906 * ISD status code
907 */
908static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
909 int detect )
910{
911 int status = ISD200_GOOD;
912 unsigned long endTime;
913 struct isd200_info *info = (struct isd200_info *)us->extra;
914 unsigned char *regs = info->RegsBuf;
915 int recheckAsMaster = 0;
916
917 if ( detect )
918 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
919 else
920 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
921
922 /* loop until we detect !BSY or timeout */
923 while(1) {
924
925 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
926 if ( status != ISD200_GOOD )
927 break;
928
929 status = isd200_action( us, ACTION_READ_STATUS,
930 regs, 8 );
931 if ( status != ISD200_GOOD )
932 break;
933
934 if (!detect) {
935 if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) {
936 usb_stor_dbg(us, " %s status is still BSY, try again...\n",
937 master_slave == ATA_ADDRESS_DEVHEAD_STD ?
938 "Master" : "Slave");
939 } else {
940 usb_stor_dbg(us, " %s status !BSY, continue with next operation\n",
941 master_slave == ATA_ADDRESS_DEVHEAD_STD ?
942 "Master" : "Slave");
943 break;
944 }
945 }
946 /* check for ATA_BUSY and */
947 /* ATA_DF (workaround ATA Zip drive) and */
948 /* ATA_ERR (workaround for Archos CD-ROM) */
949 else if (regs[ATA_REG_STATUS_OFFSET] &
950 (ATA_BUSY | ATA_DF | ATA_ERR)) {
951 usb_stor_dbg(us, " Status indicates it is not ready, try again...\n");
952 }
953 /* check for DRDY, ATA devices set DRDY after SRST */
954 else if (regs[ATA_REG_STATUS_OFFSET] & ATA_DRDY) {
955 usb_stor_dbg(us, " Identified ATA device\n");
956 info->DeviceFlags |= DF_ATA_DEVICE;
957 info->DeviceHead = master_slave;
958 break;
959 }
960 /*
961 * check Cylinder High/Low to
962 * determine if it is an ATAPI device
963 */
964 else if (regs[ATA_REG_HCYL_OFFSET] == 0xEB &&
965 regs[ATA_REG_LCYL_OFFSET] == 0x14) {
966 /*
967 * It seems that the RICOH
968 * MP6200A CD/RW drive will
969 * report itself okay as a
970 * slave when it is really a
971 * master. So this check again
972 * as a master device just to
973 * make sure it doesn't report
974 * itself okay as a master also
975 */
976 if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
977 !recheckAsMaster) {
978 usb_stor_dbg(us, " Identified ATAPI device as slave. Rechecking again as master\n");
979 recheckAsMaster = 1;
980 master_slave = ATA_ADDRESS_DEVHEAD_STD;
981 } else {
982 usb_stor_dbg(us, " Identified ATAPI device\n");
983 info->DeviceHead = master_slave;
984
985 status = isd200_atapi_soft_reset(us);
986 break;
987 }
988 } else {
989 usb_stor_dbg(us, " Not ATA, not ATAPI - Weird\n");
990 break;
991 }
992
993 /* check for timeout on this request */
994 if (time_after_eq(jiffies, endTime)) {
995 if (!detect)
996 usb_stor_dbg(us, " BSY check timeout, just continue with next operation...\n");
997 else
998 usb_stor_dbg(us, " Device detect timeout!\n");
999 break;
1000 }
1001 }
1002
1003 return status;
1004}
1005
1006/**************************************************************************
1007 * isd200_manual_enum
1008 *
1009 * Determines if the drive attached is an ATA or ATAPI and if it is a
1010 * master or slave.
1011 *
1012 * RETURNS:
1013 * ISD status code
1014 */
1015static int isd200_manual_enum(struct us_data *us)
1016{
1017 struct isd200_info *info = (struct isd200_info *)us->extra;
1018 int retStatus = ISD200_GOOD;
1019
1020 usb_stor_dbg(us, "Entering isd200_manual_enum\n");
1021
1022 retStatus = isd200_read_config(us);
1023 if (retStatus == ISD200_GOOD) {
1024 int isslave;
1025 /* master or slave? */
1026 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
1027 if (retStatus == ISD200_GOOD)
1028 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
1029
1030 if (retStatus == ISD200_GOOD) {
1031 retStatus = isd200_srst(us);
1032 if (retStatus == ISD200_GOOD)
1033 /* ata or atapi? */
1034 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
1035 }
1036
1037 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
1038 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
1039 usb_stor_dbg(us, " Setting Master/Slave selection to %d\n",
1040 isslave);
1041 info->ConfigData.ATAConfig &= 0x3f;
1042 info->ConfigData.ATAConfig |= (isslave<<6);
1043 retStatus = isd200_write_config(us);
1044 }
1045 }
1046
1047 usb_stor_dbg(us, "Leaving isd200_manual_enum %08X\n", retStatus);
1048 return(retStatus);
1049}
1050
1051static void isd200_fix_driveid(u16 *id)
1052{
1053#ifndef __LITTLE_ENDIAN
1054# ifdef __BIG_ENDIAN
1055 int i;
1056
1057 for (i = 0; i < ATA_ID_WORDS; i++)
1058 id[i] = __le16_to_cpu(id[i]);
1059# else
1060# error "Please fix <asm/byteorder.h>"
1061# endif
1062#endif
1063}
1064
1065static void isd200_dump_driveid(struct us_data *us, u16 *id)
1066{
1067 usb_stor_dbg(us, " Identify Data Structure:\n");
1068 usb_stor_dbg(us, " config = 0x%x\n", id[ATA_ID_CONFIG]);
1069 usb_stor_dbg(us, " cyls = 0x%x\n", id[ATA_ID_CYLS]);
1070 usb_stor_dbg(us, " heads = 0x%x\n", id[ATA_ID_HEADS]);
1071 usb_stor_dbg(us, " track_bytes = 0x%x\n", id[4]);
1072 usb_stor_dbg(us, " sector_bytes = 0x%x\n", id[5]);
1073 usb_stor_dbg(us, " sectors = 0x%x\n", id[ATA_ID_SECTORS]);
1074 usb_stor_dbg(us, " serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]);
1075 usb_stor_dbg(us, " buf_type = 0x%x\n", id[20]);
1076 usb_stor_dbg(us, " buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]);
1077 usb_stor_dbg(us, " ecc_bytes = 0x%x\n", id[22]);
1078 usb_stor_dbg(us, " fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]);
1079 usb_stor_dbg(us, " model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]);
1080 usb_stor_dbg(us, " max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff);
1081 usb_stor_dbg(us, " dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]);
1082 usb_stor_dbg(us, " capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8);
1083 usb_stor_dbg(us, " tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8);
1084 usb_stor_dbg(us, " tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8);
1085 usb_stor_dbg(us, " field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]);
1086 usb_stor_dbg(us, " cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]);
1087 usb_stor_dbg(us, " cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]);
1088 usb_stor_dbg(us, " cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]);
1089 usb_stor_dbg(us, " cur_capacity = 0x%x\n", ata_id_u32(id, 57));
1090 usb_stor_dbg(us, " multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff);
1091 usb_stor_dbg(us, " lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY));
1092 usb_stor_dbg(us, " command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]);
1093 usb_stor_dbg(us, " command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]);
1094}
1095
1096/**************************************************************************
1097 * isd200_get_inquiry_data
1098 *
1099 * Get inquiry data
1100 *
1101 * RETURNS:
1102 * ISD status code
1103 */
1104static int isd200_get_inquiry_data( struct us_data *us )
1105{
1106 struct isd200_info *info = (struct isd200_info *)us->extra;
1107 int retStatus = ISD200_GOOD;
1108 u16 *id = info->id;
1109
1110 usb_stor_dbg(us, "Entering isd200_get_inquiry_data\n");
1111
1112 /* set default to Master */
1113 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1114
1115 /* attempt to manually enumerate this device */
1116 retStatus = isd200_manual_enum(us);
1117 if (retStatus == ISD200_GOOD) {
1118 int transferStatus;
1119
1120 /* check for an ATA device */
1121 if (info->DeviceFlags & DF_ATA_DEVICE) {
1122 /* this must be an ATA device */
1123 /* perform an ATA Command Identify */
1124 transferStatus = isd200_action( us, ACTION_IDENTIFY,
1125 id, ATA_ID_WORDS * 2);
1126 if (transferStatus != ISD200_TRANSPORT_GOOD) {
1127 /* Error issuing ATA Command Identify */
1128 usb_stor_dbg(us, " Error issuing ATA Command Identify\n");
1129 retStatus = ISD200_ERROR;
1130 } else {
1131 /* ATA Command Identify successful */
1132 int i;
1133 __be16 *src;
1134 __u16 *dest;
1135
1136 isd200_fix_driveid(id);
1137 isd200_dump_driveid(us, id);
1138
1139 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1140
1141 /* Standard IDE interface only supports disks */
1142 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1143
1144 /* The length must be at least 36 (5 + 31) */
1145 info->InquiryData.AdditionalLength = 0x1F;
1146
1147 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) {
1148 /* set the removable bit */
1149 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1150 info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1151 }
1152
1153 /* Fill in vendor identification fields */
1154 src = (__be16 *)&id[ATA_ID_PROD];
1155 dest = (__u16*)info->InquiryData.VendorId;
1156 for (i=0;i<4;i++)
1157 dest[i] = be16_to_cpu(src[i]);
1158
1159 src = (__be16 *)&id[ATA_ID_PROD + 8/2];
1160 dest = (__u16*)info->InquiryData.ProductId;
1161 for (i=0;i<8;i++)
1162 dest[i] = be16_to_cpu(src[i]);
1163
1164 src = (__be16 *)&id[ATA_ID_FW_REV];
1165 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1166 for (i=0;i<2;i++)
1167 dest[i] = be16_to_cpu(src[i]);
1168
1169 /* determine if it supports Media Status Notification */
1170 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) {
1171 usb_stor_dbg(us, " Device supports Media Status Notification\n");
1172
1173 /*
1174 * Indicate that it is enabled, even
1175 * though it is not.
1176 * This allows the lock/unlock of the
1177 * media to work correctly.
1178 */
1179 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1180 }
1181 else
1182 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1183
1184 }
1185 } else {
1186 /*
1187 * this must be an ATAPI device
1188 * use an ATAPI protocol (Transparent SCSI)
1189 */
1190 us->protocol_name = "Transparent SCSI";
1191 us->proto_handler = usb_stor_transparent_scsi_command;
1192
1193 usb_stor_dbg(us, "Protocol changed to: %s\n",
1194 us->protocol_name);
1195
1196 /* Free driver structure */
1197 us->extra_destructor(info);
1198 kfree(info);
1199 us->extra = NULL;
1200 us->extra_destructor = NULL;
1201 }
1202 }
1203
1204 usb_stor_dbg(us, "Leaving isd200_get_inquiry_data %08X\n", retStatus);
1205
1206 return(retStatus);
1207}
1208
1209/**************************************************************************
1210 * isd200_scsi_to_ata
1211 *
1212 * Translate SCSI commands to ATA commands.
1213 *
1214 * RETURNS:
1215 * 1 if the command needs to be sent to the transport layer
1216 * 0 otherwise
1217 */
1218static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1219 union ata_cdb * ataCdb)
1220{
1221 struct isd200_info *info = (struct isd200_info *)us->extra;
1222 u16 *id = info->id;
1223 int sendToTransport = 1;
1224 unsigned char sectnum, head;
1225 unsigned short cylinder;
1226 unsigned long lba;
1227 unsigned long blockCount;
1228 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1229
1230 memset(ataCdb, 0, sizeof(union ata_cdb));
1231
1232 /* SCSI Command */
1233 switch (srb->cmnd[0]) {
1234 case INQUIRY:
1235 usb_stor_dbg(us, " ATA OUT - INQUIRY\n");
1236
1237 /* copy InquiryData */
1238 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1239 sizeof(info->InquiryData), srb);
1240 srb->result = SAM_STAT_GOOD;
1241 sendToTransport = 0;
1242 break;
1243
1244 case MODE_SENSE:
1245 usb_stor_dbg(us, " ATA OUT - SCSIOP_MODE_SENSE\n");
1246
1247 /* Initialize the return buffer */
1248 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1249
1250 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1251 {
1252 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1253 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1254 ataCdb->generic.TransferBlockSize = 1;
1255 ataCdb->generic.RegisterSelect = REG_COMMAND;
1256 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1257 isd200_srb_set_bufflen(srb, 0);
1258 } else {
1259 usb_stor_dbg(us, " Media Status not supported, just report okay\n");
1260 srb->result = SAM_STAT_GOOD;
1261 sendToTransport = 0;
1262 }
1263 break;
1264
1265 case TEST_UNIT_READY:
1266 usb_stor_dbg(us, " ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1267
1268 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1269 {
1270 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1271 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1272 ataCdb->generic.TransferBlockSize = 1;
1273 ataCdb->generic.RegisterSelect = REG_COMMAND;
1274 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1275 isd200_srb_set_bufflen(srb, 0);
1276 } else {
1277 usb_stor_dbg(us, " Media Status not supported, just report okay\n");
1278 srb->result = SAM_STAT_GOOD;
1279 sendToTransport = 0;
1280 }
1281 break;
1282
1283 case READ_CAPACITY:
1284 {
1285 unsigned long capacity;
1286 struct read_capacity_data readCapacityData;
1287
1288 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ_CAPACITY\n");
1289
1290 if (ata_id_has_lba(id))
1291 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1;
1292 else
1293 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] *
1294 id[ATA_ID_SECTORS]) - 1;
1295
1296 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1297 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1298
1299 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1300 sizeof(readCapacityData), srb);
1301 srb->result = SAM_STAT_GOOD;
1302 sendToTransport = 0;
1303 }
1304 break;
1305
1306 case READ_10:
1307 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ\n");
1308
1309 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1310 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1311
1312 if (ata_id_has_lba(id)) {
1313 sectnum = (unsigned char)(lba);
1314 cylinder = (unsigned short)(lba>>8);
1315 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1316 } else {
1317 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1318 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1319 id[ATA_ID_HEADS]));
1320 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1321 id[ATA_ID_HEADS]);
1322 }
1323 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1324 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1325 ataCdb->generic.TransferBlockSize = 1;
1326 ataCdb->generic.RegisterSelect =
1327 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1328 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1329 REG_DEVICE_HEAD | REG_COMMAND;
1330 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1331 ataCdb->write.SectorNumberByte = sectnum;
1332 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1333 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1334 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1335 ataCdb->write.CommandByte = ATA_CMD_PIO_READ;
1336 break;
1337
1338 case WRITE_10:
1339 usb_stor_dbg(us, " ATA OUT - SCSIOP_WRITE\n");
1340
1341 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1342 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1343
1344 if (ata_id_has_lba(id)) {
1345 sectnum = (unsigned char)(lba);
1346 cylinder = (unsigned short)(lba>>8);
1347 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1348 } else {
1349 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
1350 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
1351 id[ATA_ID_HEADS]));
1352 head = (u8)((lba / id[ATA_ID_SECTORS]) %
1353 id[ATA_ID_HEADS]);
1354 }
1355 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1356 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1357 ataCdb->generic.TransferBlockSize = 1;
1358 ataCdb->generic.RegisterSelect =
1359 REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1360 REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1361 REG_DEVICE_HEAD | REG_COMMAND;
1362 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1363 ataCdb->write.SectorNumberByte = sectnum;
1364 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1365 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1366 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1367 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE;
1368 break;
1369
1370 case ALLOW_MEDIUM_REMOVAL:
1371 usb_stor_dbg(us, " ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1372
1373 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1374 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n",
1375 srb->cmnd[4]);
1376
1377 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1378 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1379 ataCdb->generic.TransferBlockSize = 1;
1380 ataCdb->generic.RegisterSelect = REG_COMMAND;
1381 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1382 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
1383 isd200_srb_set_bufflen(srb, 0);
1384 } else {
1385 usb_stor_dbg(us, " Not removeable media, just report okay\n");
1386 srb->result = SAM_STAT_GOOD;
1387 sendToTransport = 0;
1388 }
1389 break;
1390
1391 case START_STOP:
1392 usb_stor_dbg(us, " ATA OUT - SCSIOP_START_STOP_UNIT\n");
1393 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1394
1395 if ((srb->cmnd[4] & 0x3) == 0x2) {
1396 usb_stor_dbg(us, " Media Eject\n");
1397 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1398 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1399 ataCdb->generic.TransferBlockSize = 0;
1400 ataCdb->generic.RegisterSelect = REG_COMMAND;
1401 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1402 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1403 usb_stor_dbg(us, " Get Media Status\n");
1404 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1405 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1406 ataCdb->generic.TransferBlockSize = 1;
1407 ataCdb->generic.RegisterSelect = REG_COMMAND;
1408 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1409 isd200_srb_set_bufflen(srb, 0);
1410 } else {
1411 usb_stor_dbg(us, " Nothing to do, just report okay\n");
1412 srb->result = SAM_STAT_GOOD;
1413 sendToTransport = 0;
1414 }
1415 break;
1416
1417 default:
1418 usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n",
1419 srb->cmnd[0]);
1420 srb->result = DID_ERROR << 16;
1421 sendToTransport = 0;
1422 break;
1423 }
1424
1425 return(sendToTransport);
1426}
1427
1428
1429/**************************************************************************
1430 * isd200_free_info
1431 *
1432 * Frees the driver structure.
1433 */
1434static void isd200_free_info_ptrs(void *info_)
1435{
1436 struct isd200_info *info = (struct isd200_info *) info_;
1437
1438 if (info) {
1439 kfree(info->id);
1440 kfree(info->RegsBuf);
1441 kfree(info->srb.sense_buffer);
1442 }
1443}
1444
1445/**************************************************************************
1446 * isd200_init_info
1447 *
1448 * Allocates (if necessary) and initializes the driver structure.
1449 *
1450 * RETURNS:
1451 * ISD status code
1452 */
1453static int isd200_init_info(struct us_data *us)
1454{
1455 struct isd200_info *info;
1456
1457 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1458 if (!info)
1459 return ISD200_ERROR;
1460
1461 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
1462 info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1463 info->srb.sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1464
1465 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1466 isd200_free_info_ptrs(info);
1467 kfree(info);
1468 return ISD200_ERROR;
1469 }
1470
1471 us->extra = info;
1472 us->extra_destructor = isd200_free_info_ptrs;
1473
1474 return ISD200_GOOD;
1475}
1476
1477/**************************************************************************
1478 * Initialization for the ISD200
1479 */
1480
1481static int isd200_Initialization(struct us_data *us)
1482{
1483 usb_stor_dbg(us, "ISD200 Initialization...\n");
1484
1485 /* Initialize ISD200 info struct */
1486
1487 if (isd200_init_info(us) == ISD200_ERROR) {
1488 usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n");
1489 } else {
1490 /* Get device specific data */
1491
1492 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1493 usb_stor_dbg(us, "ISD200 Initialization Failure\n");
1494 else
1495 usb_stor_dbg(us, "ISD200 Initialization complete\n");
1496 }
1497
1498 return 0;
1499}
1500
1501
1502/**************************************************************************
1503 * Protocol and Transport for the ISD200 ASIC
1504 *
1505 * This protocol and transport are for ATA devices connected to an ISD200
1506 * ASIC. An ATAPI device that is connected as a slave device will be
1507 * detected in the driver initialization function and the protocol will
1508 * be changed to an ATAPI protocol (Transparent SCSI).
1509 *
1510 */
1511
1512static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1513{
1514 int sendToTransport = 1, orig_bufflen;
1515 union ata_cdb ataCdb;
1516
1517 /* Make sure driver was initialized */
1518
1519 if (us->extra == NULL) {
1520 usb_stor_dbg(us, "ERROR Driver not initialized\n");
1521 srb->result = DID_ERROR << 16;
1522 return;
1523 }
1524
1525 scsi_set_resid(srb, 0);
1526 /* scsi_bufflen might change in protocol translation to ata */
1527 orig_bufflen = scsi_bufflen(srb);
1528 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1529
1530 /* send the command to the transport layer */
1531 if (sendToTransport)
1532 isd200_invoke_transport(us, srb, &ataCdb);
1533
1534 isd200_srb_set_bufflen(srb, orig_bufflen);
1535}
1536
1537static struct scsi_host_template isd200_host_template;
1538
1539static int isd200_probe(struct usb_interface *intf,
1540 const struct usb_device_id *id)
1541{
1542 struct us_data *us;
1543 int result;
1544
1545 result = usb_stor_probe1(&us, intf, id,
1546 (id - isd200_usb_ids) + isd200_unusual_dev_list,
1547 &isd200_host_template);
1548 if (result)
1549 return result;
1550
1551 us->protocol_name = "ISD200 ATA/ATAPI";
1552 us->proto_handler = isd200_ata_command;
1553
1554 result = usb_stor_probe2(us);
1555 return result;
1556}
1557
1558static struct usb_driver isd200_driver = {
1559 .name = DRV_NAME,
1560 .probe = isd200_probe,
1561 .disconnect = usb_stor_disconnect,
1562 .suspend = usb_stor_suspend,
1563 .resume = usb_stor_resume,
1564 .reset_resume = usb_stor_reset_resume,
1565 .pre_reset = usb_stor_pre_reset,
1566 .post_reset = usb_stor_post_reset,
1567 .id_table = isd200_usb_ids,
1568 .soft_unbind = 1,
1569 .no_dynamic_id = 1,
1570};
1571
1572module_usb_stor_driver(isd200_driver, isd200_host_template, DRV_NAME);