1
/* Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable
3
* Current development and maintenance by:
4
* (c) 2000, 2001 Robert Baruch (autophile@starband.net)
5
* (c) 2004, 2005 Daniel Drake <dsd@gentoo.org>
7
* Developed with the assistance of:
8
* (c) 2002 Alan Stern <stern@rowland.org>
10
* Flash support based on earlier work by:
11
* (c) 2002 Thomas Kreiling <usbdev@sm04.de>
13
* Many originally ATAPI devices were slightly modified to meet the USB
14
* market by using some kind of translation from ATAPI to USB on the host,
15
* and the peripheral would translate from USB back to ATAPI.
17
* SCM Microsystems (www.scmmicro.com) makes a device, sold to OEM's only,
18
* which does the USB-to-ATAPI conversion. By obtaining the data sheet on
19
* their device under nondisclosure agreement, I have been able to write
20
* this driver for Linux.
22
* The chip used in the device can also be used for EPP and ISA translation
23
* as well. This driver is only guaranteed to work with the ATAPI
26
* See the Kconfig help text for a list of devices known to be supported by
29
* This program is free software; you can redistribute it and/or modify it
30
* under the terms of the GNU General Public License as published by the
31
* Free Software Foundation; either version 2, or (at your option) any
34
* This program is distributed in the hope that it will be useful, but
35
* WITHOUT ANY WARRANTY; without even the implied warranty of
36
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
37
* General Public License for more details.
39
* You should have received a copy of the GNU General Public License along
40
* with this program; if not, write to the Free Software Foundation, Inc.,
41
* 675 Mass Ave, Cambridge, MA 02139, USA.
44
#include <linux/errno.h>
45
#include <linux/module.h>
46
#include <linux/slab.h>
47
#include <linux/cdrom.h>
49
#include <scsi/scsi.h>
50
#include <scsi/scsi_cmnd.h>
53
#include "transport.h"
57
MODULE_DESCRIPTION("Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable");
58
MODULE_AUTHOR("Daniel Drake <dsd@gentoo.org>, Robert Baruch <autophile@starband.net>");
59
MODULE_LICENSE("GPL");
61
/* Supported device types */
62
#define USBAT_DEV_HP8200 0x01
63
#define USBAT_DEV_FLASH 0x02
65
#define USBAT_EPP_PORT 0x10
66
#define USBAT_EPP_REGISTER 0x30
67
#define USBAT_ATA 0x40
68
#define USBAT_ISA 0x50
70
/* Commands (need to be logically OR'd with an access type */
71
#define USBAT_CMD_READ_REG 0x00
72
#define USBAT_CMD_WRITE_REG 0x01
73
#define USBAT_CMD_READ_BLOCK 0x02
74
#define USBAT_CMD_WRITE_BLOCK 0x03
75
#define USBAT_CMD_COND_READ_BLOCK 0x04
76
#define USBAT_CMD_COND_WRITE_BLOCK 0x05
77
#define USBAT_CMD_WRITE_REGS 0x07
79
/* Commands (these don't need an access type) */
80
#define USBAT_CMD_EXEC_CMD 0x80
81
#define USBAT_CMD_SET_FEAT 0x81
82
#define USBAT_CMD_UIO 0x82
84
/* Methods of accessing UIO register */
85
#define USBAT_UIO_READ 1
86
#define USBAT_UIO_WRITE 0
89
#define USBAT_QUAL_FCQ 0x20 /* full compare */
90
#define USBAT_QUAL_ALQ 0x10 /* auto load subcount */
92
/* USBAT Flash Media status types */
93
#define USBAT_FLASH_MEDIA_NONE 0
94
#define USBAT_FLASH_MEDIA_CF 1
96
/* USBAT Flash Media change types */
97
#define USBAT_FLASH_MEDIA_SAME 0
98
#define USBAT_FLASH_MEDIA_CHANGED 1
100
/* USBAT ATA registers */
101
#define USBAT_ATA_DATA 0x10 /* read/write data (R/W) */
102
#define USBAT_ATA_FEATURES 0x11 /* set features (W) */
103
#define USBAT_ATA_ERROR 0x11 /* error (R) */
104
#define USBAT_ATA_SECCNT 0x12 /* sector count (R/W) */
105
#define USBAT_ATA_SECNUM 0x13 /* sector number (R/W) */
106
#define USBAT_ATA_LBA_ME 0x14 /* cylinder low (R/W) */
107
#define USBAT_ATA_LBA_HI 0x15 /* cylinder high (R/W) */
108
#define USBAT_ATA_DEVICE 0x16 /* head/device selection (R/W) */
109
#define USBAT_ATA_STATUS 0x17 /* device status (R) */
110
#define USBAT_ATA_CMD 0x17 /* device command (W) */
111
#define USBAT_ATA_ALTSTATUS 0x0E /* status (no clear IRQ) (R) */
113
/* USBAT User I/O Data registers */
114
#define USBAT_UIO_EPAD 0x80 /* Enable Peripheral Control Signals */
115
#define USBAT_UIO_CDT 0x40 /* Card Detect (Read Only) */
116
/* CDT = ACKD & !UI1 & !UI0 */
117
#define USBAT_UIO_1 0x20 /* I/O 1 */
118
#define USBAT_UIO_0 0x10 /* I/O 0 */
119
#define USBAT_UIO_EPP_ATA 0x08 /* 1=EPP mode, 0=ATA mode */
120
#define USBAT_UIO_UI1 0x04 /* Input 1 */
121
#define USBAT_UIO_UI0 0x02 /* Input 0 */
122
#define USBAT_UIO_INTR_ACK 0x01 /* Interrupt (ATA/ISA)/Acknowledge (EPP) */
124
/* USBAT User I/O Enable registers */
125
#define USBAT_UIO_DRVRST 0x80 /* Reset Peripheral */
126
#define USBAT_UIO_ACKD 0x40 /* Enable Card Detect */
127
#define USBAT_UIO_OE1 0x20 /* I/O 1 set=output/clr=input */
128
/* If ACKD=1, set OE1 to 1 also. */
129
#define USBAT_UIO_OE0 0x10 /* I/O 0 set=output/clr=input */
130
#define USBAT_UIO_ADPRST 0x01 /* Reset SCM chip */
133
#define USBAT_FEAT_ETEN 0x80 /* External trigger enable */
134
#define USBAT_FEAT_U1 0x08
135
#define USBAT_FEAT_U0 0x04
136
#define USBAT_FEAT_ET1 0x02
137
#define USBAT_FEAT_ET2 0x01
142
/* Used for Flash readers only */
143
unsigned long sectors; /* total sector count */
144
unsigned long ssize; /* sector size in bytes */
146
unsigned char sense_key;
147
unsigned long sense_asc; /* additional sense code */
148
unsigned long sense_ascq; /* additional sense code qualifier */
151
#define short_pack(LSB,MSB) ( ((u16)(LSB)) | ( ((u16)(MSB))<<8 ) )
152
#define LSB_of(s) ((s)&0xFF)
153
#define MSB_of(s) ((s)>>8)
155
static int transferred = 0;
157
static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us);
158
static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us);
160
static int init_usbat_cd(struct us_data *us);
161
static int init_usbat_flash(struct us_data *us);
165
* The table of devices
167
#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
168
vendorName, productName, useProtocol, useTransport, \
169
initFunction, flags) \
170
{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
171
.driver_info = (flags)|(USB_US_TYPE_STOR<<24) }
173
struct usb_device_id usbat_usb_ids[] = {
174
# include "unusual_usbat.h"
175
{ } /* Terminating entry */
177
MODULE_DEVICE_TABLE(usb, usbat_usb_ids);
184
#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
185
vendor_name, product_name, use_protocol, use_transport, \
186
init_function, Flags) \
188
.vendorName = vendor_name, \
189
.productName = product_name, \
190
.useProtocol = use_protocol, \
191
.useTransport = use_transport, \
192
.initFunction = init_function, \
195
static struct us_unusual_dev usbat_unusual_dev_list[] = {
196
# include "unusual_usbat.h"
197
{ } /* Terminating entry */
203
* Convenience function to produce an ATA read/write sectors command
204
* Use cmd=0x20 for read, cmd=0x30 for write
206
static void usbat_pack_ata_sector_cmd(unsigned char *buf,
207
unsigned char thistime,
208
u32 sector, unsigned char cmd)
212
buf[2] = sector & 0xFF;
213
buf[3] = (sector >> 8) & 0xFF;
214
buf[4] = (sector >> 16) & 0xFF;
215
buf[5] = 0xE0 | ((sector >> 24) & 0x0F);
220
* Convenience function to get the device type (flash or hp8200)
222
static int usbat_get_device_type(struct us_data *us)
224
return ((struct usbat_info*)us->extra)->devicetype;
228
* Read a register from the device
230
static int usbat_read(struct us_data *us,
231
unsigned char access,
233
unsigned char *content)
235
return usb_stor_ctrl_transfer(us,
237
access | USBAT_CMD_READ_REG,
246
* Write to a register on the device
248
static int usbat_write(struct us_data *us,
249
unsigned char access,
251
unsigned char content)
253
return usb_stor_ctrl_transfer(us,
255
access | USBAT_CMD_WRITE_REG,
257
short_pack(reg, content),
264
* Convenience function to perform a bulk read
266
static int usbat_bulk_read(struct us_data *us,
272
return USB_STOR_XFER_GOOD;
274
US_DEBUGP("usbat_bulk_read: len = %d\n", len);
275
return usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, buf, len, use_sg, NULL);
279
* Convenience function to perform a bulk write
281
static int usbat_bulk_write(struct us_data *us,
287
return USB_STOR_XFER_GOOD;
289
US_DEBUGP("usbat_bulk_write: len = %d\n", len);
290
return usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, buf, len, use_sg, NULL);
294
* Some USBAT-specific commands can only be executed over a command transport
295
* This transport allows one (len=8) or two (len=16) vendor-specific commands
298
static int usbat_execute_command(struct us_data *us,
299
unsigned char *commands,
302
return usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
303
USBAT_CMD_EXEC_CMD, 0x40, 0, 0,
308
* Read the status register
310
static int usbat_get_status(struct us_data *us, unsigned char *status)
313
rc = usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status);
315
US_DEBUGP("usbat_get_status: 0x%02X\n", (unsigned short) (*status));
320
* Check the device status
322
static int usbat_check_status(struct us_data *us)
324
unsigned char *reply = us->iobuf;
327
rc = usbat_get_status(us, reply);
328
if (rc != USB_STOR_XFER_GOOD)
329
return USB_STOR_TRANSPORT_FAILED;
331
/* error/check condition (0x51 is ok) */
332
if (*reply & 0x01 && *reply != 0x51)
333
return USB_STOR_TRANSPORT_FAILED;
337
return USB_STOR_TRANSPORT_FAILED;
339
return USB_STOR_TRANSPORT_GOOD;
343
* Stores critical information in internal registers in preparation for the execution
344
* of a conditional usbat_read_blocks or usbat_write_blocks call.
346
static int usbat_set_shuttle_features(struct us_data *us,
347
unsigned char external_trigger,
348
unsigned char epp_control,
349
unsigned char mask_byte,
350
unsigned char test_pattern,
351
unsigned char subcountH,
352
unsigned char subcountL)
354
unsigned char *command = us->iobuf;
357
command[1] = USBAT_CMD_SET_FEAT;
360
* The only bit relevant to ATA access is bit 6
361
* which defines 8 bit data access (set) or 16 bit (unset)
363
command[2] = epp_control;
366
* If FCQ is set in the qualifier (defined in R/W cmd), then bits U0, U1,
367
* ET1 and ET2 define an external event to be checked for on event of a
368
* _read_blocks or _write_blocks operation. The read/write will not take
369
* place unless the defined trigger signal is active.
371
command[3] = external_trigger;
374
* The resultant byte of the mask operation (see mask_byte) is compared for
375
* equivalence with this test pattern. If equal, the read/write will take
378
command[4] = test_pattern;
381
* This value is logically ANDed with the status register field specified
382
* in the read/write command.
384
command[5] = mask_byte;
387
* If ALQ is set in the qualifier, this field contains the address of the
388
* registers where the byte count should be read for transferring the data.
389
* If ALQ is not set, then this field contains the number of bytes to be
392
command[6] = subcountL;
393
command[7] = subcountH;
395
return usbat_execute_command(us, command, 8);
399
* Block, waiting for an ATA device to become not busy or to report
400
* an error condition.
402
static int usbat_wait_not_busy(struct us_data *us, int minutes)
406
unsigned char *status = us->iobuf;
408
/* Synchronizing cache on a CDR could take a heck of a long time,
409
* but probably not more than 10 minutes or so. On the other hand,
410
* doing a full blank on a CDRW at speed 1 will take about 75
414
for (i=0; i<1200+minutes*60; i++) {
416
result = usbat_get_status(us, status);
418
if (result!=USB_STOR_XFER_GOOD)
419
return USB_STOR_TRANSPORT_ERROR;
420
if (*status & 0x01) { /* check condition */
421
result = usbat_read(us, USBAT_ATA, 0x10, status);
422
return USB_STOR_TRANSPORT_FAILED;
424
if (*status & 0x20) /* device fault */
425
return USB_STOR_TRANSPORT_FAILED;
427
if ((*status & 0x80)==0x00) { /* not busy */
428
US_DEBUGP("Waited not busy for %d steps\n", i);
429
return USB_STOR_TRANSPORT_GOOD;
433
msleep(10); /* 5 seconds */
435
msleep(50); /* 10 seconds */
437
msleep(100); /* 50 seconds */
439
msleep(1000); /* X minutes */
442
US_DEBUGP("Waited not busy for %d minutes, timing out.\n",
444
return USB_STOR_TRANSPORT_FAILED;
448
* Read block data from the data register
450
static int usbat_read_block(struct us_data *us,
456
unsigned char *command = us->iobuf;
459
return USB_STOR_TRANSPORT_GOOD;
462
command[1] = USBAT_ATA | USBAT_CMD_READ_BLOCK;
463
command[2] = USBAT_ATA_DATA;
467
command[6] = LSB_of(len);
468
command[7] = MSB_of(len);
470
result = usbat_execute_command(us, command, 8);
471
if (result != USB_STOR_XFER_GOOD)
472
return USB_STOR_TRANSPORT_ERROR;
474
result = usbat_bulk_read(us, buf, len, use_sg);
475
return (result == USB_STOR_XFER_GOOD ?
476
USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
480
* Write block data via the data register
482
static int usbat_write_block(struct us_data *us,
483
unsigned char access,
490
unsigned char *command = us->iobuf;
493
return USB_STOR_TRANSPORT_GOOD;
496
command[1] = access | USBAT_CMD_WRITE_BLOCK;
497
command[2] = USBAT_ATA_DATA;
501
command[6] = LSB_of(len);
502
command[7] = MSB_of(len);
504
result = usbat_execute_command(us, command, 8);
506
if (result != USB_STOR_XFER_GOOD)
507
return USB_STOR_TRANSPORT_ERROR;
509
result = usbat_bulk_write(us, buf, len, use_sg);
510
if (result != USB_STOR_XFER_GOOD)
511
return USB_STOR_TRANSPORT_ERROR;
513
return usbat_wait_not_busy(us, minutes);
517
* Process read and write requests
519
static int usbat_hp8200e_rw_block_test(struct us_data *us,
520
unsigned char access,
521
unsigned char *registers,
522
unsigned char *data_out,
523
unsigned short num_registers,
524
unsigned char data_reg,
525
unsigned char status_reg,
526
unsigned char timeout,
527
unsigned char qualifier,
535
unsigned int pipe = (direction == DMA_FROM_DEVICE) ?
536
us->recv_bulk_pipe : us->send_bulk_pipe;
538
unsigned char *command = us->iobuf;
541
unsigned char *data = us->iobuf;
542
unsigned char *status = us->iobuf;
544
BUG_ON(num_registers > US_IOBUF_SIZE/2);
546
for (i=0; i<20; i++) {
549
* The first time we send the full command, which consists
550
* of downloading the SCSI command followed by downloading
551
* the data via a write-and-test. Any other time we only
552
* send the command to download the data -- the SCSI command
553
* is still 'active' in some sense in the device.
555
* We're only going to try sending the data 10 times. After
556
* that, we just return a failure.
562
* Write to multiple registers
563
* Not really sure the 0x07, 0x17, 0xfc, 0xe7 is
564
* necessary here, but that's what came out of the
565
* trace every single time.
568
command[1] = access | USBAT_CMD_WRITE_REGS;
573
command[6] = LSB_of(num_registers*2);
574
command[7] = MSB_of(num_registers*2);
578
/* Conditionally read or write blocks */
579
command[cmdlen-8] = (direction==DMA_TO_DEVICE ? 0x40 : 0xC0);
580
command[cmdlen-7] = access |
581
(direction==DMA_TO_DEVICE ?
582
USBAT_CMD_COND_WRITE_BLOCK : USBAT_CMD_COND_READ_BLOCK);
583
command[cmdlen-6] = data_reg;
584
command[cmdlen-5] = status_reg;
585
command[cmdlen-4] = timeout;
586
command[cmdlen-3] = qualifier;
587
command[cmdlen-2] = LSB_of(len);
588
command[cmdlen-1] = MSB_of(len);
590
result = usbat_execute_command(us, command, cmdlen);
592
if (result != USB_STOR_XFER_GOOD)
593
return USB_STOR_TRANSPORT_ERROR;
597
for (j=0; j<num_registers; j++) {
598
data[j<<1] = registers[j];
599
data[1+(j<<1)] = data_out[j];
602
result = usbat_bulk_write(us, data, num_registers*2, 0);
603
if (result != USB_STOR_XFER_GOOD)
604
return USB_STOR_TRANSPORT_ERROR;
608
result = usb_stor_bulk_transfer_sg(us,
609
pipe, buf, len, use_sg, NULL);
612
* If we get a stall on the bulk download, we'll retry
613
* the bulk download -- but not the SCSI command because
614
* in some sense the SCSI command is still 'active' and
615
* waiting for the data. Don't ask me why this should be;
616
* I'm only following what the Windoze driver did.
618
* Note that a stall for the test-and-read/write command means
619
* that the test failed. In this case we're testing to make
620
* sure that the device is error-free
621
* (i.e. bit 0 -- CHK -- of status is 0). The most likely
622
* hypothesis is that the USBAT chip somehow knows what
623
* the device will accept, but doesn't give the device any
624
* data until all data is received. Thus, the device would
625
* still be waiting for the first byte of data if a stall
626
* occurs, even if the stall implies that some data was
630
if (result == USB_STOR_XFER_SHORT ||
631
result == USB_STOR_XFER_STALLED) {
634
* If we're reading and we stalled, then clear
635
* the bulk output pipe only the first time.
638
if (direction==DMA_FROM_DEVICE && i==0) {
639
if (usb_stor_clear_halt(us,
640
us->send_bulk_pipe) < 0)
641
return USB_STOR_TRANSPORT_ERROR;
645
* Read status: is the device angry, or just busy?
648
result = usbat_read(us, USBAT_ATA,
649
direction==DMA_TO_DEVICE ?
650
USBAT_ATA_STATUS : USBAT_ATA_ALTSTATUS,
653
if (result!=USB_STOR_XFER_GOOD)
654
return USB_STOR_TRANSPORT_ERROR;
655
if (*status & 0x01) /* check condition */
656
return USB_STOR_TRANSPORT_FAILED;
657
if (*status & 0x20) /* device fault */
658
return USB_STOR_TRANSPORT_FAILED;
660
US_DEBUGP("Redoing %s\n",
661
direction==DMA_TO_DEVICE ? "write" : "read");
663
} else if (result != USB_STOR_XFER_GOOD)
664
return USB_STOR_TRANSPORT_ERROR;
666
return usbat_wait_not_busy(us, minutes);
670
US_DEBUGP("Bummer! %s bulk data 20 times failed.\n",
671
direction==DMA_TO_DEVICE ? "Writing" : "Reading");
673
return USB_STOR_TRANSPORT_FAILED;
677
* Write to multiple registers:
678
* Allows us to write specific data to any registers. The data to be written
679
* gets packed in this sequence: reg0, data0, reg1, data1, ..., regN, dataN
680
* which gets sent through bulk out.
681
* Not designed for large transfers of data!
683
static int usbat_multiple_write(struct us_data *us,
684
unsigned char *registers,
685
unsigned char *data_out,
686
unsigned short num_registers)
689
unsigned char *data = us->iobuf;
690
unsigned char *command = us->iobuf;
692
BUG_ON(num_registers > US_IOBUF_SIZE/2);
694
/* Write to multiple registers, ATA access */
696
command[1] = USBAT_ATA | USBAT_CMD_WRITE_REGS;
704
/* Number of bytes to be transferred (incl. addresses and data) */
705
command[6] = LSB_of(num_registers*2);
706
command[7] = MSB_of(num_registers*2);
708
/* The setup command */
709
result = usbat_execute_command(us, command, 8);
710
if (result != USB_STOR_XFER_GOOD)
711
return USB_STOR_TRANSPORT_ERROR;
713
/* Create the reg/data, reg/data sequence */
714
for (i=0; i<num_registers; i++) {
715
data[i<<1] = registers[i];
716
data[1+(i<<1)] = data_out[i];
720
result = usbat_bulk_write(us, data, num_registers*2, 0);
721
if (result != USB_STOR_XFER_GOOD)
722
return USB_STOR_TRANSPORT_ERROR;
724
if (usbat_get_device_type(us) == USBAT_DEV_HP8200)
725
return usbat_wait_not_busy(us, 0);
727
return USB_STOR_TRANSPORT_GOOD;
731
* Conditionally read blocks from device:
732
* Allows us to read blocks from a specific data register, based upon the
733
* condition that a status register can be successfully masked with a status
734
* qualifier. If this condition is not initially met, the read will wait
735
* up until a maximum amount of time has elapsed, as specified by timeout.
736
* The read will start when the condition is met, otherwise the command aborts.
738
* The qualifier defined here is not the value that is masked, it defines
739
* conditions for the write to take place. The actual masked qualifier (and
740
* other related details) are defined beforehand with _set_shuttle_features().
742
static int usbat_read_blocks(struct us_data *us,
748
unsigned char *command = us->iobuf;
751
command[1] = USBAT_ATA | USBAT_CMD_COND_READ_BLOCK;
752
command[2] = USBAT_ATA_DATA;
753
command[3] = USBAT_ATA_STATUS;
754
command[4] = 0xFD; /* Timeout (ms); */
755
command[5] = USBAT_QUAL_FCQ;
756
command[6] = LSB_of(len);
757
command[7] = MSB_of(len);
759
/* Multiple block read setup command */
760
result = usbat_execute_command(us, command, 8);
761
if (result != USB_STOR_XFER_GOOD)
762
return USB_STOR_TRANSPORT_FAILED;
764
/* Read the blocks we just asked for */
765
result = usbat_bulk_read(us, buffer, len, use_sg);
766
if (result != USB_STOR_XFER_GOOD)
767
return USB_STOR_TRANSPORT_FAILED;
769
return USB_STOR_TRANSPORT_GOOD;
773
* Conditionally write blocks to device:
774
* Allows us to write blocks to a specific data register, based upon the
775
* condition that a status register can be successfully masked with a status
776
* qualifier. If this condition is not initially met, the write will wait
777
* up until a maximum amount of time has elapsed, as specified by timeout.
778
* The read will start when the condition is met, otherwise the command aborts.
780
* The qualifier defined here is not the value that is masked, it defines
781
* conditions for the write to take place. The actual masked qualifier (and
782
* other related details) are defined beforehand with _set_shuttle_features().
784
static int usbat_write_blocks(struct us_data *us,
790
unsigned char *command = us->iobuf;
793
command[1] = USBAT_ATA | USBAT_CMD_COND_WRITE_BLOCK;
794
command[2] = USBAT_ATA_DATA;
795
command[3] = USBAT_ATA_STATUS;
796
command[4] = 0xFD; /* Timeout (ms) */
797
command[5] = USBAT_QUAL_FCQ;
798
command[6] = LSB_of(len);
799
command[7] = MSB_of(len);
801
/* Multiple block write setup command */
802
result = usbat_execute_command(us, command, 8);
803
if (result != USB_STOR_XFER_GOOD)
804
return USB_STOR_TRANSPORT_FAILED;
807
result = usbat_bulk_write(us, buffer, len, use_sg);
808
if (result != USB_STOR_XFER_GOOD)
809
return USB_STOR_TRANSPORT_FAILED;
811
return USB_STOR_TRANSPORT_GOOD;
815
* Read the User IO register
817
static int usbat_read_user_io(struct us_data *us, unsigned char *data_flags)
821
result = usb_stor_ctrl_transfer(us,
830
US_DEBUGP("usbat_read_user_io: UIO register reads %02X\n", (unsigned short) (*data_flags));
836
* Write to the User IO register
838
static int usbat_write_user_io(struct us_data *us,
839
unsigned char enable_flags,
840
unsigned char data_flags)
842
return usb_stor_ctrl_transfer(us,
846
short_pack(enable_flags, data_flags),
854
* Often needed on media change.
856
static int usbat_device_reset(struct us_data *us)
861
* Reset peripheral, enable peripheral control signals
862
* (bring reset signal up)
864
rc = usbat_write_user_io(us,
865
USBAT_UIO_DRVRST | USBAT_UIO_OE1 | USBAT_UIO_OE0,
866
USBAT_UIO_EPAD | USBAT_UIO_1);
867
if (rc != USB_STOR_XFER_GOOD)
868
return USB_STOR_TRANSPORT_ERROR;
871
* Enable peripheral control signals
872
* (bring reset signal down)
874
rc = usbat_write_user_io(us,
875
USBAT_UIO_OE1 | USBAT_UIO_OE0,
876
USBAT_UIO_EPAD | USBAT_UIO_1);
877
if (rc != USB_STOR_XFER_GOOD)
878
return USB_STOR_TRANSPORT_ERROR;
880
return USB_STOR_TRANSPORT_GOOD;
886
static int usbat_device_enable_cdt(struct us_data *us)
890
/* Enable peripheral control signals and card detect */
891
rc = usbat_write_user_io(us,
892
USBAT_UIO_ACKD | USBAT_UIO_OE1 | USBAT_UIO_OE0,
893
USBAT_UIO_EPAD | USBAT_UIO_1);
894
if (rc != USB_STOR_XFER_GOOD)
895
return USB_STOR_TRANSPORT_ERROR;
897
return USB_STOR_TRANSPORT_GOOD;
901
* Determine if media is present.
903
static int usbat_flash_check_media_present(unsigned char *uio)
905
if (*uio & USBAT_UIO_UI0) {
906
US_DEBUGP("usbat_flash_check_media_present: no media detected\n");
907
return USBAT_FLASH_MEDIA_NONE;
910
return USBAT_FLASH_MEDIA_CF;
914
* Determine if media has changed since last operation
916
static int usbat_flash_check_media_changed(unsigned char *uio)
918
if (*uio & USBAT_UIO_0) {
919
US_DEBUGP("usbat_flash_check_media_changed: media change detected\n");
920
return USBAT_FLASH_MEDIA_CHANGED;
923
return USBAT_FLASH_MEDIA_SAME;
927
* Check for media change / no media and handle the situation appropriately
929
static int usbat_flash_check_media(struct us_data *us,
930
struct usbat_info *info)
933
unsigned char *uio = us->iobuf;
935
rc = usbat_read_user_io(us, uio);
936
if (rc != USB_STOR_XFER_GOOD)
937
return USB_STOR_TRANSPORT_ERROR;
939
/* Check for media existence */
940
rc = usbat_flash_check_media_present(uio);
941
if (rc == USBAT_FLASH_MEDIA_NONE) {
942
info->sense_key = 0x02;
943
info->sense_asc = 0x3A;
944
info->sense_ascq = 0x00;
945
return USB_STOR_TRANSPORT_FAILED;
948
/* Check for media change */
949
rc = usbat_flash_check_media_changed(uio);
950
if (rc == USBAT_FLASH_MEDIA_CHANGED) {
952
/* Reset and re-enable card detect */
953
rc = usbat_device_reset(us);
954
if (rc != USB_STOR_TRANSPORT_GOOD)
956
rc = usbat_device_enable_cdt(us);
957
if (rc != USB_STOR_TRANSPORT_GOOD)
962
rc = usbat_read_user_io(us, uio);
963
if (rc != USB_STOR_XFER_GOOD)
964
return USB_STOR_TRANSPORT_ERROR;
966
info->sense_key = UNIT_ATTENTION;
967
info->sense_asc = 0x28;
968
info->sense_ascq = 0x00;
969
return USB_STOR_TRANSPORT_FAILED;
972
return USB_STOR_TRANSPORT_GOOD;
976
* Determine whether we are controlling a flash-based reader/writer,
977
* or a HP8200-based CD drive.
978
* Sets transport functions as appropriate.
980
static int usbat_identify_device(struct us_data *us,
981
struct usbat_info *info)
984
unsigned char status;
987
return USB_STOR_TRANSPORT_ERROR;
989
rc = usbat_device_reset(us);
990
if (rc != USB_STOR_TRANSPORT_GOOD)
995
* In attempt to distinguish between HP CDRW's and Flash readers, we now
996
* execute the IDENTIFY PACKET DEVICE command. On ATA devices (i.e. flash
997
* readers), this command should fail with error. On ATAPI devices (i.e.
998
* CDROM drives), it should succeed.
1000
rc = usbat_write(us, USBAT_ATA, USBAT_ATA_CMD, 0xA1);
1001
if (rc != USB_STOR_XFER_GOOD)
1002
return USB_STOR_TRANSPORT_ERROR;
1004
rc = usbat_get_status(us, &status);
1005
if (rc != USB_STOR_XFER_GOOD)
1006
return USB_STOR_TRANSPORT_ERROR;
1008
/* Check for error bit, or if the command 'fell through' */
1009
if (status == 0xA1 || !(status & 0x01)) {
1010
/* Device is HP 8200 */
1011
US_DEBUGP("usbat_identify_device: Detected HP8200 CDRW\n");
1012
info->devicetype = USBAT_DEV_HP8200;
1014
/* Device is a CompactFlash reader/writer */
1015
US_DEBUGP("usbat_identify_device: Detected Flash reader/writer\n");
1016
info->devicetype = USBAT_DEV_FLASH;
1019
return USB_STOR_TRANSPORT_GOOD;
1023
* Set the transport function based on the device type
1025
static int usbat_set_transport(struct us_data *us,
1026
struct usbat_info *info,
1030
if (!info->devicetype)
1031
info->devicetype = devicetype;
1033
if (!info->devicetype)
1034
usbat_identify_device(us, info);
1036
switch (info->devicetype) {
1038
return USB_STOR_TRANSPORT_ERROR;
1040
case USBAT_DEV_HP8200:
1041
us->transport = usbat_hp8200e_transport;
1044
case USBAT_DEV_FLASH:
1045
us->transport = usbat_flash_transport;
1053
* Read the media capacity
1055
static int usbat_flash_get_sector_count(struct us_data *us,
1056
struct usbat_info *info)
1058
unsigned char registers[3] = {
1063
unsigned char command[3] = { 0x01, 0xA0, 0xEC };
1064
unsigned char *reply;
1065
unsigned char status;
1069
return USB_STOR_TRANSPORT_ERROR;
1071
reply = kmalloc(512, GFP_NOIO);
1073
return USB_STOR_TRANSPORT_ERROR;
1075
/* ATA command : IDENTIFY DEVICE */
1076
rc = usbat_multiple_write(us, registers, command, 3);
1077
if (rc != USB_STOR_XFER_GOOD) {
1078
US_DEBUGP("usbat_flash_get_sector_count: Gah! identify_device failed\n");
1079
rc = USB_STOR_TRANSPORT_ERROR;
1083
/* Read device status */
1084
if (usbat_get_status(us, &status) != USB_STOR_XFER_GOOD) {
1085
rc = USB_STOR_TRANSPORT_ERROR;
1091
/* Read the device identification data */
1092
rc = usbat_read_block(us, reply, 512, 0);
1093
if (rc != USB_STOR_TRANSPORT_GOOD)
1096
info->sectors = ((u32)(reply[117]) << 24) |
1097
((u32)(reply[116]) << 16) |
1098
((u32)(reply[115]) << 8) |
1099
((u32)(reply[114]) );
1101
rc = USB_STOR_TRANSPORT_GOOD;
1109
* Read data from device
1111
static int usbat_flash_read_data(struct us_data *us,
1112
struct usbat_info *info,
1116
unsigned char registers[7] = {
1125
unsigned char command[7];
1126
unsigned char *buffer;
1127
unsigned char thistime;
1128
unsigned int totallen, alloclen;
1130
unsigned int sg_offset = 0;
1131
struct scatterlist *sg = NULL;
1133
result = usbat_flash_check_media(us, info);
1134
if (result != USB_STOR_TRANSPORT_GOOD)
1138
* we're working in LBA mode. according to the ATA spec,
1139
* we can support up to 28-bit addressing. I don't know if Jumpshot
1140
* supports beyond 24-bit addressing. It's kind of hard to test
1141
* since it requires > 8GB CF card.
1144
if (sector > 0x0FFFFFFF)
1145
return USB_STOR_TRANSPORT_ERROR;
1147
totallen = sectors * info->ssize;
1150
* Since we don't read more than 64 KB at a time, we have to create
1151
* a bounce buffer and move the data a piece at a time between the
1152
* bounce buffer and the actual transfer buffer.
1155
alloclen = min(totallen, 65536u);
1156
buffer = kmalloc(alloclen, GFP_NOIO);
1158
return USB_STOR_TRANSPORT_ERROR;
1162
* loop, never allocate or transfer more than 64k at once
1163
* (min(128k, 255*info->ssize) is the real limit)
1165
len = min(totallen, alloclen);
1166
thistime = (len / info->ssize) & 0xff;
1168
/* ATA command 0x20 (READ SECTORS) */
1169
usbat_pack_ata_sector_cmd(command, thistime, sector, 0x20);
1171
/* Write/execute ATA read command */
1172
result = usbat_multiple_write(us, registers, command, 7);
1173
if (result != USB_STOR_TRANSPORT_GOOD)
1176
/* Read the data we just requested */
1177
result = usbat_read_blocks(us, buffer, len, 0);
1178
if (result != USB_STOR_TRANSPORT_GOOD)
1181
US_DEBUGP("usbat_flash_read_data: %d bytes\n", len);
1183
/* Store the data in the transfer buffer */
1184
usb_stor_access_xfer_buf(buffer, len, us->srb,
1185
&sg, &sg_offset, TO_XFER_BUF);
1189
} while (totallen > 0);
1192
return USB_STOR_TRANSPORT_GOOD;
1196
return USB_STOR_TRANSPORT_ERROR;
1200
* Write data to device
1202
static int usbat_flash_write_data(struct us_data *us,
1203
struct usbat_info *info,
1207
unsigned char registers[7] = {
1216
unsigned char command[7];
1217
unsigned char *buffer;
1218
unsigned char thistime;
1219
unsigned int totallen, alloclen;
1221
unsigned int sg_offset = 0;
1222
struct scatterlist *sg = NULL;
1224
result = usbat_flash_check_media(us, info);
1225
if (result != USB_STOR_TRANSPORT_GOOD)
1229
* we're working in LBA mode. according to the ATA spec,
1230
* we can support up to 28-bit addressing. I don't know if the device
1231
* supports beyond 24-bit addressing. It's kind of hard to test
1232
* since it requires > 8GB media.
1235
if (sector > 0x0FFFFFFF)
1236
return USB_STOR_TRANSPORT_ERROR;
1238
totallen = sectors * info->ssize;
1241
* Since we don't write more than 64 KB at a time, we have to create
1242
* a bounce buffer and move the data a piece at a time between the
1243
* bounce buffer and the actual transfer buffer.
1246
alloclen = min(totallen, 65536u);
1247
buffer = kmalloc(alloclen, GFP_NOIO);
1249
return USB_STOR_TRANSPORT_ERROR;
1253
* loop, never allocate or transfer more than 64k at once
1254
* (min(128k, 255*info->ssize) is the real limit)
1256
len = min(totallen, alloclen);
1257
thistime = (len / info->ssize) & 0xff;
1259
/* Get the data from the transfer buffer */
1260
usb_stor_access_xfer_buf(buffer, len, us->srb,
1261
&sg, &sg_offset, FROM_XFER_BUF);
1263
/* ATA command 0x30 (WRITE SECTORS) */
1264
usbat_pack_ata_sector_cmd(command, thistime, sector, 0x30);
1266
/* Write/execute ATA write command */
1267
result = usbat_multiple_write(us, registers, command, 7);
1268
if (result != USB_STOR_TRANSPORT_GOOD)
1271
/* Write the data */
1272
result = usbat_write_blocks(us, buffer, len, 0);
1273
if (result != USB_STOR_TRANSPORT_GOOD)
1278
} while (totallen > 0);
1285
return USB_STOR_TRANSPORT_ERROR;
1289
* Squeeze a potentially huge (> 65535 byte) read10 command into
1290
* a little ( <= 65535 byte) ATAPI pipe
1292
static int usbat_hp8200e_handle_read10(struct us_data *us,
1293
unsigned char *registers,
1294
unsigned char *data,
1295
struct scsi_cmnd *srb)
1297
int result = USB_STOR_TRANSPORT_GOOD;
1298
unsigned char *buffer;
1300
unsigned int sector;
1301
unsigned int sg_offset = 0;
1302
struct scatterlist *sg = NULL;
1304
US_DEBUGP("handle_read10: transfersize %d\n",
1307
if (scsi_bufflen(srb) < 0x10000) {
1309
result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
1310
registers, data, 19,
1311
USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
1312
(USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
1315
scsi_bufflen(srb), scsi_sg_count(srb), 1);
1321
* Since we're requesting more data than we can handle in
1322
* a single read command (max is 64k-1), we will perform
1323
* multiple reads, but each read must be in multiples of
1324
* a sector. Luckily the sector size is in srb->transfersize
1325
* (see linux/drivers/scsi/sr.c).
1328
if (data[7+0] == GPCMD_READ_CD) {
1329
len = short_pack(data[7+9], data[7+8]);
1332
US_DEBUGP("handle_read10: GPCMD_READ_CD: len %d\n", len);
1333
srb->transfersize = scsi_bufflen(srb)/len;
1336
if (!srb->transfersize) {
1337
srb->transfersize = 2048; /* A guess */
1338
US_DEBUGP("handle_read10: transfersize 0, forcing %d\n",
1343
* Since we only read in one block at a time, we have to create
1344
* a bounce buffer and move the data a piece at a time between the
1345
* bounce buffer and the actual transfer buffer.
1348
len = (65535/srb->transfersize) * srb->transfersize;
1349
US_DEBUGP("Max read is %d bytes\n", len);
1350
len = min(len, scsi_bufflen(srb));
1351
buffer = kmalloc(len, GFP_NOIO);
1352
if (buffer == NULL) /* bloody hell! */
1353
return USB_STOR_TRANSPORT_FAILED;
1354
sector = short_pack(data[7+3], data[7+2]);
1356
sector |= short_pack(data[7+5], data[7+4]);
1359
while (transferred != scsi_bufflen(srb)) {
1361
if (len > scsi_bufflen(srb) - transferred)
1362
len = scsi_bufflen(srb) - transferred;
1364
data[3] = len&0xFF; /* (cylL) = expected length (L) */
1365
data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */
1367
/* Fix up the SCSI command sector and num sectors */
1369
data[7+2] = MSB_of(sector>>16); /* SCSI command sector */
1370
data[7+3] = LSB_of(sector>>16);
1371
data[7+4] = MSB_of(sector&0xFFFF);
1372
data[7+5] = LSB_of(sector&0xFFFF);
1373
if (data[7+0] == GPCMD_READ_CD)
1375
data[7+7] = MSB_of(len / srb->transfersize); /* SCSI command */
1376
data[7+8] = LSB_of(len / srb->transfersize); /* num sectors */
1378
result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
1379
registers, data, 19,
1380
USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
1381
(USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
1386
if (result != USB_STOR_TRANSPORT_GOOD)
1389
/* Store the data in the transfer buffer */
1390
usb_stor_access_xfer_buf(buffer, len, srb,
1391
&sg, &sg_offset, TO_XFER_BUF);
1393
/* Update the amount transferred and the sector number */
1396
sector += len / srb->transfersize;
1398
} /* while transferred != scsi_bufflen(srb) */
1404
static int usbat_select_and_test_registers(struct us_data *us)
1407
unsigned char *status = us->iobuf;
1409
/* try device = master, then device = slave. */
1410
for (selector = 0xA0; selector <= 0xB0; selector += 0x10) {
1411
if (usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) !=
1413
return USB_STOR_TRANSPORT_ERROR;
1415
if (usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status) !=
1417
return USB_STOR_TRANSPORT_ERROR;
1419
if (usbat_read(us, USBAT_ATA, USBAT_ATA_DEVICE, status) !=
1421
return USB_STOR_TRANSPORT_ERROR;
1423
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
1425
return USB_STOR_TRANSPORT_ERROR;
1427
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) !=
1429
return USB_STOR_TRANSPORT_ERROR;
1431
if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_ME, 0x55) !=
1433
return USB_STOR_TRANSPORT_ERROR;
1435
if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_HI, 0xAA) !=
1437
return USB_STOR_TRANSPORT_ERROR;
1439
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
1441
return USB_STOR_TRANSPORT_ERROR;
1443
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
1445
return USB_STOR_TRANSPORT_ERROR;
1448
return USB_STOR_TRANSPORT_GOOD;
1452
* Initialize the USBAT processor and the storage device
1454
static int init_usbat(struct us_data *us, int devicetype)
1457
struct usbat_info *info;
1458
unsigned char subcountH = USBAT_ATA_LBA_HI;
1459
unsigned char subcountL = USBAT_ATA_LBA_ME;
1460
unsigned char *status = us->iobuf;
1462
us->extra = kzalloc(sizeof(struct usbat_info), GFP_NOIO);
1464
US_DEBUGP("init_usbat: Gah! Can't allocate storage for usbat info struct!\n");
1467
info = (struct usbat_info *) (us->extra);
1469
/* Enable peripheral control signals */
1470
rc = usbat_write_user_io(us,
1471
USBAT_UIO_OE1 | USBAT_UIO_OE0,
1472
USBAT_UIO_EPAD | USBAT_UIO_1);
1473
if (rc != USB_STOR_XFER_GOOD)
1474
return USB_STOR_TRANSPORT_ERROR;
1476
US_DEBUGP("INIT 1\n");
1480
rc = usbat_read_user_io(us, status);
1481
if (rc != USB_STOR_TRANSPORT_GOOD)
1484
US_DEBUGP("INIT 2\n");
1486
rc = usbat_read_user_io(us, status);
1487
if (rc != USB_STOR_XFER_GOOD)
1488
return USB_STOR_TRANSPORT_ERROR;
1490
rc = usbat_read_user_io(us, status);
1491
if (rc != USB_STOR_XFER_GOOD)
1492
return USB_STOR_TRANSPORT_ERROR;
1494
US_DEBUGP("INIT 3\n");
1496
rc = usbat_select_and_test_registers(us);
1497
if (rc != USB_STOR_TRANSPORT_GOOD)
1500
US_DEBUGP("INIT 4\n");
1502
rc = usbat_read_user_io(us, status);
1503
if (rc != USB_STOR_XFER_GOOD)
1504
return USB_STOR_TRANSPORT_ERROR;
1506
US_DEBUGP("INIT 5\n");
1508
/* Enable peripheral control signals and card detect */
1509
rc = usbat_device_enable_cdt(us);
1510
if (rc != USB_STOR_TRANSPORT_GOOD)
1513
US_DEBUGP("INIT 6\n");
1515
rc = usbat_read_user_io(us, status);
1516
if (rc != USB_STOR_XFER_GOOD)
1517
return USB_STOR_TRANSPORT_ERROR;
1519
US_DEBUGP("INIT 7\n");
1523
rc = usbat_read_user_io(us, status);
1524
if (rc != USB_STOR_XFER_GOOD)
1525
return USB_STOR_TRANSPORT_ERROR;
1527
US_DEBUGP("INIT 8\n");
1529
rc = usbat_select_and_test_registers(us);
1530
if (rc != USB_STOR_TRANSPORT_GOOD)
1533
US_DEBUGP("INIT 9\n");
1535
/* At this point, we need to detect which device we are using */
1536
if (usbat_set_transport(us, info, devicetype))
1537
return USB_STOR_TRANSPORT_ERROR;
1539
US_DEBUGP("INIT 10\n");
1541
if (usbat_get_device_type(us) == USBAT_DEV_FLASH) {
1545
rc = usbat_set_shuttle_features(us, (USBAT_FEAT_ETEN | USBAT_FEAT_ET2 | USBAT_FEAT_ET1),
1546
0x00, 0x88, 0x08, subcountH, subcountL);
1547
if (rc != USB_STOR_XFER_GOOD)
1548
return USB_STOR_TRANSPORT_ERROR;
1550
US_DEBUGP("INIT 11\n");
1552
return USB_STOR_TRANSPORT_GOOD;
1556
* Transport for the HP 8200e
1558
static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us)
1561
unsigned char *status = us->iobuf;
1562
unsigned char registers[32];
1563
unsigned char data[32];
1567
len = scsi_bufflen(srb);
1569
/* Send A0 (ATA PACKET COMMAND).
1570
Note: I guess we're never going to get any of the ATA
1571
commands... just ATA Packet Commands.
1574
registers[0] = USBAT_ATA_FEATURES;
1575
registers[1] = USBAT_ATA_SECCNT;
1576
registers[2] = USBAT_ATA_SECNUM;
1577
registers[3] = USBAT_ATA_LBA_ME;
1578
registers[4] = USBAT_ATA_LBA_HI;
1579
registers[5] = USBAT_ATA_DEVICE;
1580
registers[6] = USBAT_ATA_CMD;
1584
data[3] = len&0xFF; /* (cylL) = expected length (L) */
1585
data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */
1586
data[5] = 0xB0; /* (device sel) = slave */
1587
data[6] = 0xA0; /* (command) = ATA PACKET COMMAND */
1589
for (i=7; i<19; i++) {
1590
registers[i] = 0x10;
1591
data[i] = (i-7 >= srb->cmd_len) ? 0 : srb->cmnd[i-7];
1594
result = usbat_get_status(us, status);
1595
US_DEBUGP("Status = %02X\n", *status);
1596
if (result != USB_STOR_XFER_GOOD)
1597
return USB_STOR_TRANSPORT_ERROR;
1598
if (srb->cmnd[0] == TEST_UNIT_READY)
1601
if (srb->sc_data_direction == DMA_TO_DEVICE) {
1603
result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
1604
registers, data, 19,
1605
USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
1606
(USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
1609
len, scsi_sg_count(srb), 10);
1611
if (result == USB_STOR_TRANSPORT_GOOD) {
1613
US_DEBUGP("Wrote %08X bytes\n", transferred);
1618
} else if (srb->cmnd[0] == READ_10 ||
1619
srb->cmnd[0] == GPCMD_READ_CD) {
1621
return usbat_hp8200e_handle_read10(us, registers, data, srb);
1626
US_DEBUGP("Error: len = %08X... what do I do now?\n",
1628
return USB_STOR_TRANSPORT_ERROR;
1631
result = usbat_multiple_write(us, registers, data, 7);
1633
if (result != USB_STOR_TRANSPORT_GOOD)
1637
* Write the 12-byte command header.
1639
* If the command is BLANK then set the timer for 75 minutes.
1640
* Otherwise set it for 10 minutes.
1642
* NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW
1643
* AT SPEED 4 IS UNRELIABLE!!!
1646
result = usbat_write_block(us, USBAT_ATA, srb->cmnd, 12,
1647
srb->cmnd[0] == GPCMD_BLANK ? 75 : 10, 0);
1649
if (result != USB_STOR_TRANSPORT_GOOD)
1652
/* If there is response data to be read in then do it here. */
1654
if (len != 0 && (srb->sc_data_direction == DMA_FROM_DEVICE)) {
1656
/* How many bytes to read in? Check cylL register */
1658
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
1659
USB_STOR_XFER_GOOD) {
1660
return USB_STOR_TRANSPORT_ERROR;
1663
if (len > 0xFF) { /* need to read cylH also */
1665
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) !=
1666
USB_STOR_XFER_GOOD) {
1667
return USB_STOR_TRANSPORT_ERROR;
1669
len += ((unsigned int) *status)<<8;
1675
result = usbat_read_block(us, scsi_sglist(srb), len,
1676
scsi_sg_count(srb));
1683
* Transport for USBAT02-based CompactFlash and similar storage devices
1685
static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us)
1688
struct usbat_info *info = (struct usbat_info *) (us->extra);
1689
unsigned long block, blocks;
1690
unsigned char *ptr = us->iobuf;
1691
static unsigned char inquiry_response[36] = {
1692
0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00
1695
if (srb->cmnd[0] == INQUIRY) {
1696
US_DEBUGP("usbat_flash_transport: INQUIRY. Returning bogus response.\n");
1697
memcpy(ptr, inquiry_response, sizeof(inquiry_response));
1698
fill_inquiry_response(us, ptr, 36);
1699
return USB_STOR_TRANSPORT_GOOD;
1702
if (srb->cmnd[0] == READ_CAPACITY) {
1703
rc = usbat_flash_check_media(us, info);
1704
if (rc != USB_STOR_TRANSPORT_GOOD)
1707
rc = usbat_flash_get_sector_count(us, info);
1708
if (rc != USB_STOR_TRANSPORT_GOOD)
1711
/* hard coded 512 byte sectors as per ATA spec */
1712
info->ssize = 0x200;
1713
US_DEBUGP("usbat_flash_transport: READ_CAPACITY: %ld sectors, %ld bytes per sector\n",
1714
info->sectors, info->ssize);
1718
* note: must return the sector number of the last sector,
1719
* *not* the total number of sectors
1721
((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1);
1722
((__be32 *) ptr)[1] = cpu_to_be32(info->ssize);
1723
usb_stor_set_xfer_buf(ptr, 8, srb);
1725
return USB_STOR_TRANSPORT_GOOD;
1728
if (srb->cmnd[0] == MODE_SELECT_10) {
1729
US_DEBUGP("usbat_flash_transport: Gah! MODE_SELECT_10.\n");
1730
return USB_STOR_TRANSPORT_ERROR;
1733
if (srb->cmnd[0] == READ_10) {
1734
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
1735
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
1737
blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
1739
US_DEBUGP("usbat_flash_transport: READ_10: read block 0x%04lx count %ld\n", block, blocks);
1740
return usbat_flash_read_data(us, info, block, blocks);
1743
if (srb->cmnd[0] == READ_12) {
1745
* I don't think we'll ever see a READ_12 but support it anyway
1747
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
1748
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
1750
blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
1751
((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9]));
1753
US_DEBUGP("usbat_flash_transport: READ_12: read block 0x%04lx count %ld\n", block, blocks);
1754
return usbat_flash_read_data(us, info, block, blocks);
1757
if (srb->cmnd[0] == WRITE_10) {
1758
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
1759
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
1761
blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
1763
US_DEBUGP("usbat_flash_transport: WRITE_10: write block 0x%04lx count %ld\n", block, blocks);
1764
return usbat_flash_write_data(us, info, block, blocks);
1767
if (srb->cmnd[0] == WRITE_12) {
1769
* I don't think we'll ever see a WRITE_12 but support it anyway
1771
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
1772
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
1774
blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
1775
((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9]));
1777
US_DEBUGP("usbat_flash_transport: WRITE_12: write block 0x%04lx count %ld\n", block, blocks);
1778
return usbat_flash_write_data(us, info, block, blocks);
1782
if (srb->cmnd[0] == TEST_UNIT_READY) {
1783
US_DEBUGP("usbat_flash_transport: TEST_UNIT_READY.\n");
1785
rc = usbat_flash_check_media(us, info);
1786
if (rc != USB_STOR_TRANSPORT_GOOD)
1789
return usbat_check_status(us);
1792
if (srb->cmnd[0] == REQUEST_SENSE) {
1793
US_DEBUGP("usbat_flash_transport: REQUEST_SENSE.\n");
1797
ptr[2] = info->sense_key;
1799
ptr[12] = info->sense_asc;
1800
ptr[13] = info->sense_ascq;
1801
usb_stor_set_xfer_buf(ptr, 18, srb);
1803
return USB_STOR_TRANSPORT_GOOD;
1806
if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
1808
* sure. whatever. not like we can stop the user from popping
1809
* the media out of the device (no locking doors, etc)
1811
return USB_STOR_TRANSPORT_GOOD;
1814
US_DEBUGP("usbat_flash_transport: Gah! Unknown command: %d (0x%x)\n",
1815
srb->cmnd[0], srb->cmnd[0]);
1816
info->sense_key = 0x05;
1817
info->sense_asc = 0x20;
1818
info->sense_ascq = 0x00;
1819
return USB_STOR_TRANSPORT_FAILED;
1822
static int init_usbat_cd(struct us_data *us)
1824
return init_usbat(us, USBAT_DEV_HP8200);
1827
static int init_usbat_flash(struct us_data *us)
1829
return init_usbat(us, USBAT_DEV_FLASH);
1832
static int usbat_probe(struct usb_interface *intf,
1833
const struct usb_device_id *id)
1838
result = usb_stor_probe1(&us, intf, id,
1839
(id - usbat_usb_ids) + usbat_unusual_dev_list);
1843
/* The actual transport will be determined later by the
1844
* initialization routine; this is just a placeholder.
1846
us->transport_name = "Shuttle USBAT";
1847
us->transport = usbat_flash_transport;
1848
us->transport_reset = usb_stor_CB_reset;
1851
result = usb_stor_probe2(us);
1855
static struct usb_driver usbat_driver = {
1856
.name = "ums-usbat",
1857
.probe = usbat_probe,
1858
.disconnect = usb_stor_disconnect,
1859
.suspend = usb_stor_suspend,
1860
.resume = usb_stor_resume,
1861
.reset_resume = usb_stor_reset_resume,
1862
.pre_reset = usb_stor_pre_reset,
1863
.post_reset = usb_stor_post_reset,
1864
.id_table = usbat_usb_ids,
1868
static int __init usbat_init(void)
1870
return usb_register(&usbat_driver);
1873
static void __exit usbat_exit(void)
1875
usb_deregister(&usbat_driver);
1878
module_init(usbat_init);
1879
module_exit(usbat_exit);