2 * Most of this source has been derived from the Linux USB
4 * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
5 * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org)
6 * (c) 1999 Michael Gee (michael@linuxspecific.com)
7 * (c) 2000 Yggdrasil Computing, Inc.
11 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
12 * Driver model conversion:
13 * (C) Copyright 2015 Google, Inc
15 * For BBB support (C) Copyright 2003
16 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
18 * BBB support based on /sys/dev/usb/umass.c from
21 * SPDX-License-Identifier: GPL-2.0+
25 * Currently only the CBI transport protocoll has been implemented, and it
26 * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
27 * transport protocoll may work as well.
31 * Support for USB Mass Storage Devices (BBB) has been added. It has
32 * only been tested with USB memory sticks.
42 #include <asm/byteorder.h>
43 #include <asm/processor.h>
44 #include <dm/device-internal.h>
49 #undef BBB_COMDAT_TRACE
50 #undef BBB_XPORT_TRACE
53 /* direction table -- this indicates the direction of the data
54 * transfer for each command code -- a 1 indicates input
56 static const unsigned char us_direction
[256/8] = {
57 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
58 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
59 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
60 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
62 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
64 static ccb usb_ccb
__attribute__((aligned(ARCH_DMA_MINALIGN
)));
67 #define USB_MAX_STOR_DEV 5
68 static int usb_max_devs
; /* number of highest available usb device */
70 static block_dev_desc_t usb_dev_desc
[USB_MAX_STOR_DEV
];
73 typedef int (*trans_cmnd
)(ccb
*cb
, struct us_data
*data
);
74 typedef int (*trans_reset
)(struct us_data
*data
);
77 struct usb_device
*pusb_dev
; /* this usb_device */
79 unsigned int flags
; /* from filter initially */
80 # define USB_READY (1 << 0)
81 unsigned char ifnum
; /* interface number */
82 unsigned char ep_in
; /* in endpoint */
83 unsigned char ep_out
; /* out ....... */
84 unsigned char ep_int
; /* interrupt . */
85 unsigned char subclass
; /* as in overview */
86 unsigned char protocol
; /* .............. */
87 unsigned char attention_done
; /* force attn on first cmd */
88 unsigned short ip_data
; /* interrupt data */
89 int action
; /* what to do */
90 int ip_wanted
; /* needed */
91 int *irq_handle
; /* for USB int requests */
92 unsigned int irqpipe
; /* pipe for release_irq */
93 unsigned char irqmaxp
; /* max packed for irq Pipe */
94 unsigned char irqinterval
; /* Intervall for IRQ Pipe */
95 ccb
*srb
; /* current srb */
96 trans_reset transport_reset
; /* reset routine */
97 trans_cmnd transport
; /* transport routine */
100 #ifdef CONFIG_USB_EHCI
102 * The U-Boot EHCI driver can handle any transfer length as long as there is
103 * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are
104 * limited to 65535 blocks.
106 #define USB_MAX_XFER_BLK 65535
108 #define USB_MAX_XFER_BLK 20
111 static struct us_data usb_stor
[USB_MAX_STOR_DEV
];
113 #define USB_STOR_TRANSPORT_GOOD 0
114 #define USB_STOR_TRANSPORT_FAILED -1
115 #define USB_STOR_TRANSPORT_ERROR -2
117 int usb_stor_get_info(struct usb_device
*dev
, struct us_data
*us
,
118 block_dev_desc_t
*dev_desc
);
119 int usb_storage_probe(struct usb_device
*dev
, unsigned int ifnum
,
121 unsigned long usb_stor_read(int device
, lbaint_t blknr
,
122 lbaint_t blkcnt
, void *buffer
);
123 unsigned long usb_stor_write(int device
, lbaint_t blknr
,
124 lbaint_t blkcnt
, const void *buffer
);
125 void uhci_show_temp_int_td(void);
127 #ifdef CONFIG_PARTITIONS
128 block_dev_desc_t
*usb_stor_get_dev(int index
)
130 return (index
< usb_max_devs
) ? &usb_dev_desc
[index
] : NULL
;
134 static void usb_show_progress(void)
139 /*******************************************************************************
140 * show info on storage devices; 'usb start/init' must be invoked earlier
141 * as we only retrieve structures populated during devices initialization
143 int usb_stor_info(void)
147 if (usb_max_devs
> 0) {
148 for (i
= 0; i
< usb_max_devs
; i
++) {
149 printf(" Device %d: ", i
);
150 dev_print(&usb_dev_desc
[i
]);
155 printf("No storage devices, perhaps not 'usb start'ed..?\n");
159 static unsigned int usb_get_max_lun(struct us_data
*us
)
162 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result
, 1);
163 len
= usb_control_msg(us
->pusb_dev
,
164 usb_rcvctrlpipe(us
->pusb_dev
, 0),
166 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
| USB_DIR_IN
,
168 result
, sizeof(char),
169 USB_CNTL_TIMEOUT
* 5);
170 debug("Get Max LUN -> len = %i, result = %i\n", len
, (int) *result
);
171 return (len
> 0) ? *result
: 0;
174 static int usb_stor_probe_device(struct usb_device
*dev
)
177 return -ENOENT
; /* no more devices available */
179 debug("\n\nProbing for storage\n");
180 if (usb_storage_probe(dev
, 0, &usb_stor
[usb_max_devs
])) {
181 /* OK, it's a storage device. Iterate over its LUNs
182 * and populate `usb_dev_desc'.
184 int lun
, max_lun
, start
= usb_max_devs
;
186 max_lun
= usb_get_max_lun(&usb_stor
[usb_max_devs
]);
188 lun
<= max_lun
&& usb_max_devs
< USB_MAX_STOR_DEV
;
190 struct block_dev_desc
*blkdev
;
192 blkdev
= &usb_dev_desc
[usb_max_devs
];
193 memset(blkdev
, '\0', sizeof(block_dev_desc_t
));
194 blkdev
->if_type
= IF_TYPE_USB
;
195 blkdev
->dev
= usb_max_devs
;
196 blkdev
->part_type
= PART_TYPE_UNKNOWN
;
197 blkdev
->target
= 0xff;
198 blkdev
->type
= DEV_TYPE_UNKNOWN
;
199 blkdev
->block_read
= usb_stor_read
;
200 blkdev
->block_write
= usb_stor_write
;
204 if (usb_stor_get_info(dev
, &usb_stor
[start
],
205 &usb_dev_desc
[usb_max_devs
]) ==
208 debug("%s: Found device %p\n", __func__
, dev
);
213 /* if storage device */
214 if (usb_max_devs
== USB_MAX_STOR_DEV
) {
215 printf("max USB Storage Device reached: %d stopping\n",
223 void usb_stor_reset(void)
228 #ifndef CONFIG_DM_USB
229 /*******************************************************************************
230 * scan the usb and reports device info
231 * to the user if mode = 1
232 * returns current device or -1 if no
234 int usb_stor_scan(int mode
)
239 printf(" scanning usb for storage devices... ");
241 usb_disable_asynch(1); /* asynch transfer not allowed */
244 for (i
= 0; i
< USB_MAX_DEVICE
; i
++) {
245 struct usb_device
*dev
;
247 dev
= usb_get_dev_index(i
); /* get device */
249 if (usb_stor_probe_device(dev
))
253 usb_disable_asynch(0); /* asynch transfer allowed */
254 printf("%d Storage Device(s) found\n", usb_max_devs
);
255 if (usb_max_devs
> 0)
261 static int usb_stor_irq(struct usb_device
*dev
)
264 us
= (struct us_data
*)dev
->privptr
;
274 static void usb_show_srb(ccb
*pccb
)
277 printf("SRB: len %d datalen 0x%lX\n ", pccb
->cmdlen
, pccb
->datalen
);
278 for (i
= 0; i
< 12; i
++)
279 printf("%02X ", pccb
->cmd
[i
]);
283 static void display_int_status(unsigned long tmp
)
285 printf("Status: %s %s %s %s %s %s %s\n",
286 (tmp
& USB_ST_ACTIVE
) ? "Active" : "",
287 (tmp
& USB_ST_STALLED
) ? "Stalled" : "",
288 (tmp
& USB_ST_BUF_ERR
) ? "Buffer Error" : "",
289 (tmp
& USB_ST_BABBLE_DET
) ? "Babble Det" : "",
290 (tmp
& USB_ST_NAK_REC
) ? "NAKed" : "",
291 (tmp
& USB_ST_CRC_ERR
) ? "CRC Error" : "",
292 (tmp
& USB_ST_BIT_ERR
) ? "Bitstuff Error" : "");
295 /***********************************************************************
296 * Data transfer routines
297 ***********************************************************************/
299 static int us_one_transfer(struct us_data
*us
, int pipe
, char *buf
, int length
)
308 /* determine the maximum packet size for these transfers */
309 max_size
= usb_maxpacket(us
->pusb_dev
, pipe
) * 16;
311 /* while we have data left to transfer */
314 /* calculate how long this will be -- maximum or a remainder */
315 this_xfer
= length
> max_size
? max_size
: length
;
318 /* setup the retry counter */
321 /* set up the transfer loop */
323 /* transfer the data */
324 debug("Bulk xfer 0x%lx(%d) try #%d\n",
325 (ulong
)map_to_sysmem(buf
), this_xfer
,
327 result
= usb_bulk_msg(us
->pusb_dev
, pipe
, buf
,
329 USB_CNTL_TIMEOUT
* 5);
330 debug("bulk_msg returned %d xferred %d/%d\n",
331 result
, partial
, this_xfer
);
332 if (us
->pusb_dev
->status
!= 0) {
333 /* if we stall, we need to clear it before
337 display_int_status(us
->pusb_dev
->status
);
339 if (us
->pusb_dev
->status
& USB_ST_STALLED
) {
340 debug("stalled ->clearing endpoint" \
341 "halt for pipe 0x%x\n", pipe
);
342 stat
= us
->pusb_dev
->status
;
343 usb_clear_halt(us
->pusb_dev
, pipe
);
344 us
->pusb_dev
->status
= stat
;
345 if (this_xfer
== partial
) {
346 debug("bulk transferred" \
349 us
->pusb_dev
->status
);
355 if (us
->pusb_dev
->status
& USB_ST_NAK_REC
) {
356 debug("Device NAKed bulk_msg\n");
359 debug("bulk transferred with error");
360 if (this_xfer
== partial
) {
361 debug(" %ld, but data ok\n",
362 us
->pusb_dev
->status
);
365 /* if our try counter reaches 0, bail out */
366 debug(" %ld, data %d\n",
367 us
->pusb_dev
->status
, partial
);
371 /* update to show what data was transferred */
372 this_xfer
-= partial
;
374 /* continue until this transfer is done */
378 /* if we get here, we're done and successful */
382 static int usb_stor_BBB_reset(struct us_data
*us
)
388 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
390 * For Reset Recovery the host shall issue in the following order:
391 * a) a Bulk-Only Mass Storage Reset
392 * b) a Clear Feature HALT to the Bulk-In endpoint
393 * c) a Clear Feature HALT to the Bulk-Out endpoint
395 * This is done in 3 steps.
397 * If the reset doesn't succeed, the device should be port reset.
399 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
401 debug("BBB_reset\n");
402 result
= usb_control_msg(us
->pusb_dev
, usb_sndctrlpipe(us
->pusb_dev
, 0),
404 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
405 0, us
->ifnum
, NULL
, 0, USB_CNTL_TIMEOUT
* 5);
407 if ((result
< 0) && (us
->pusb_dev
->status
& USB_ST_STALLED
)) {
408 debug("RESET:stall\n");
412 /* long wait for reset */
414 debug("BBB_reset result %d: status %lX reset\n",
415 result
, us
->pusb_dev
->status
);
416 pipe
= usb_rcvbulkpipe(us
->pusb_dev
, us
->ep_in
);
417 result
= usb_clear_halt(us
->pusb_dev
, pipe
);
418 /* long wait for reset */
420 debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
421 result
, us
->pusb_dev
->status
);
422 /* long wait for reset */
423 pipe
= usb_sndbulkpipe(us
->pusb_dev
, us
->ep_out
);
424 result
= usb_clear_halt(us
->pusb_dev
, pipe
);
426 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
427 result
, us
->pusb_dev
->status
);
428 debug("BBB_reset done\n");
432 /* FIXME: this reset function doesn't really reset the port, and it
433 * should. Actually it should probably do what it's doing here, and
434 * reset the port physically
436 static int usb_stor_CB_reset(struct us_data
*us
)
438 unsigned char cmd
[12];
442 memset(cmd
, 0xff, sizeof(cmd
));
443 cmd
[0] = SCSI_SEND_DIAG
;
445 result
= usb_control_msg(us
->pusb_dev
, usb_sndctrlpipe(us
->pusb_dev
, 0),
447 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
448 0, us
->ifnum
, cmd
, sizeof(cmd
),
449 USB_CNTL_TIMEOUT
* 5);
451 /* long wait for reset */
453 debug("CB_reset result %d: status %lX clearing endpoint halt\n",
454 result
, us
->pusb_dev
->status
);
455 usb_clear_halt(us
->pusb_dev
, usb_rcvbulkpipe(us
->pusb_dev
, us
->ep_in
));
456 usb_clear_halt(us
->pusb_dev
, usb_rcvbulkpipe(us
->pusb_dev
, us
->ep_out
));
458 debug("CB_reset done\n");
463 * Set up the command for a BBB device. Note that the actual SCSI
464 * command is copied into cbw.CBWCDB.
466 static int usb_stor_BBB_comdat(ccb
*srb
, struct us_data
*us
)
472 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw
, cbw
, 1);
474 dir_in
= US_DIRECTION(srb
->cmd
[0]);
476 #ifdef BBB_COMDAT_TRACE
477 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
478 dir_in
, srb
->lun
, srb
->cmdlen
, srb
->cmd
, srb
->datalen
,
481 for (result
= 0; result
< srb
->cmdlen
; result
++)
482 printf("cmd[%d] %#x ", result
, srb
->cmd
[result
]);
487 if (!(srb
->cmdlen
<= CBWCDBLENGTH
)) {
488 debug("usb_stor_BBB_comdat:cmdlen too large\n");
492 /* always OUT to the ep */
493 pipe
= usb_sndbulkpipe(us
->pusb_dev
, us
->ep_out
);
495 cbw
->dCBWSignature
= cpu_to_le32(CBWSIGNATURE
);
496 cbw
->dCBWTag
= cpu_to_le32(CBWTag
++);
497 cbw
->dCBWDataTransferLength
= cpu_to_le32(srb
->datalen
);
498 cbw
->bCBWFlags
= (dir_in
? CBWFLAGS_IN
: CBWFLAGS_OUT
);
499 cbw
->bCBWLUN
= srb
->lun
;
500 cbw
->bCDBLength
= srb
->cmdlen
;
501 /* copy the command data into the CBW command data buffer */
504 memcpy(cbw
->CBWCDB
, srb
->cmd
, srb
->cmdlen
);
505 result
= usb_bulk_msg(us
->pusb_dev
, pipe
, cbw
, UMASS_BBB_CBW_SIZE
,
506 &actlen
, USB_CNTL_TIMEOUT
* 5);
508 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
512 /* FIXME: we also need a CBI_command which sets up the completion
513 * interrupt, and waits for it
515 static int usb_stor_CB_comdat(ccb
*srb
, struct us_data
*us
)
520 unsigned long status
;
523 dir_in
= US_DIRECTION(srb
->cmd
[0]);
526 pipe
= usb_rcvbulkpipe(us
->pusb_dev
, us
->ep_in
);
528 pipe
= usb_sndbulkpipe(us
->pusb_dev
, us
->ep_out
);
531 debug("CBI gets a command: Try %d\n", 5 - retry
);
535 /* let's send the command via the control pipe */
536 result
= usb_control_msg(us
->pusb_dev
,
537 usb_sndctrlpipe(us
->pusb_dev
, 0),
539 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
541 srb
->cmd
, srb
->cmdlen
,
542 USB_CNTL_TIMEOUT
* 5);
543 debug("CB_transport: control msg returned %d, status %lX\n",
544 result
, us
->pusb_dev
->status
);
545 /* check the return code for the command */
547 if (us
->pusb_dev
->status
& USB_ST_STALLED
) {
548 status
= us
->pusb_dev
->status
;
549 debug(" stall during command found," \
551 usb_clear_halt(us
->pusb_dev
,
552 usb_sndctrlpipe(us
->pusb_dev
, 0));
553 us
->pusb_dev
->status
= status
;
555 debug(" error during command %02X" \
556 " Stat = %lX\n", srb
->cmd
[0],
557 us
->pusb_dev
->status
);
560 /* transfer the data payload for this command, if one exists*/
562 debug("CB_transport: control msg returned %d," \
563 " direction is %s to go 0x%lx\n", result
,
564 dir_in
? "IN" : "OUT", srb
->datalen
);
566 result
= us_one_transfer(us
, pipe
, (char *)srb
->pdata
,
568 debug("CBI attempted to transfer data," \
569 " result is %d status %lX, len %d\n",
570 result
, us
->pusb_dev
->status
,
571 us
->pusb_dev
->act_len
);
572 if (!(us
->pusb_dev
->status
& USB_ST_NAK_REC
))
574 } /* if (srb->datalen) */
584 static int usb_stor_CBI_get_status(ccb
*srb
, struct us_data
*us
)
589 submit_int_msg(us
->pusb_dev
, us
->irqpipe
,
590 (void *) &us
->ip_data
, us
->irqmaxp
, us
->irqinterval
);
593 if (us
->ip_wanted
== 0)
598 printf(" Did not get interrupt on CBI\n");
600 return USB_STOR_TRANSPORT_ERROR
;
602 debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
603 us
->ip_data
, us
->pusb_dev
->irq_act_len
,
604 us
->pusb_dev
->irq_status
);
605 /* UFI gives us ASC and ASCQ, like a request sense */
606 if (us
->subclass
== US_SC_UFI
) {
607 if (srb
->cmd
[0] == SCSI_REQ_SENSE
||
608 srb
->cmd
[0] == SCSI_INQUIRY
)
609 return USB_STOR_TRANSPORT_GOOD
; /* Good */
610 else if (us
->ip_data
)
611 return USB_STOR_TRANSPORT_FAILED
;
613 return USB_STOR_TRANSPORT_GOOD
;
615 /* otherwise, we interpret the data normally */
616 switch (us
->ip_data
) {
618 return USB_STOR_TRANSPORT_GOOD
;
620 return USB_STOR_TRANSPORT_FAILED
;
622 return USB_STOR_TRANSPORT_ERROR
;
624 return USB_STOR_TRANSPORT_ERROR
;
627 #define USB_TRANSPORT_UNKNOWN_RETRY 5
628 #define USB_TRANSPORT_NOT_READY_RETRY 10
630 /* clear a stall on an endpoint - special for BBB devices */
631 static int usb_stor_BBB_clear_endpt_stall(struct us_data
*us
, __u8 endpt
)
635 /* ENDPOINT_HALT = 0, so set value to 0 */
636 result
= usb_control_msg(us
->pusb_dev
, usb_sndctrlpipe(us
->pusb_dev
, 0),
637 USB_REQ_CLEAR_FEATURE
, USB_RECIP_ENDPOINT
,
638 0, endpt
, NULL
, 0, USB_CNTL_TIMEOUT
* 5);
642 static int usb_stor_BBB_transport(ccb
*srb
, struct us_data
*us
)
646 int actlen
, data_actlen
;
647 unsigned int pipe
, pipein
, pipeout
;
648 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw
, csw
, 1);
649 #ifdef BBB_XPORT_TRACE
654 dir_in
= US_DIRECTION(srb
->cmd
[0]);
657 debug("COMMAND phase\n");
658 result
= usb_stor_BBB_comdat(srb
, us
);
660 debug("failed to send CBW status %ld\n",
661 us
->pusb_dev
->status
);
662 usb_stor_BBB_reset(us
);
663 return USB_STOR_TRANSPORT_FAILED
;
665 if (!(us
->flags
& USB_READY
))
667 pipein
= usb_rcvbulkpipe(us
->pusb_dev
, us
->ep_in
);
668 pipeout
= usb_sndbulkpipe(us
->pusb_dev
, us
->ep_out
);
669 /* DATA phase + error handling */
671 /* no data, go immediately to the STATUS phase */
672 if (srb
->datalen
== 0)
674 debug("DATA phase\n");
680 result
= usb_bulk_msg(us
->pusb_dev
, pipe
, srb
->pdata
, srb
->datalen
,
681 &data_actlen
, USB_CNTL_TIMEOUT
* 5);
682 /* special handling of STALL in DATA phase */
683 if ((result
< 0) && (us
->pusb_dev
->status
& USB_ST_STALLED
)) {
684 debug("DATA:stall\n");
685 /* clear the STALL on the endpoint */
686 result
= usb_stor_BBB_clear_endpt_stall(us
,
687 dir_in
? us
->ep_in
: us
->ep_out
);
689 /* continue on to STATUS phase */
693 debug("usb_bulk_msg error status %ld\n",
694 us
->pusb_dev
->status
);
695 usb_stor_BBB_reset(us
);
696 return USB_STOR_TRANSPORT_FAILED
;
698 #ifdef BBB_XPORT_TRACE
699 for (index
= 0; index
< data_actlen
; index
++)
700 printf("pdata[%d] %#x ", index
, srb
->pdata
[index
]);
703 /* STATUS phase + error handling */
707 debug("STATUS phase\n");
708 result
= usb_bulk_msg(us
->pusb_dev
, pipein
, csw
, UMASS_BBB_CSW_SIZE
,
709 &actlen
, USB_CNTL_TIMEOUT
*5);
711 /* special handling of STALL in STATUS phase */
712 if ((result
< 0) && (retry
< 1) &&
713 (us
->pusb_dev
->status
& USB_ST_STALLED
)) {
714 debug("STATUS:stall\n");
715 /* clear the STALL on the endpoint */
716 result
= usb_stor_BBB_clear_endpt_stall(us
, us
->ep_in
);
717 if (result
>= 0 && (retry
++ < 1))
722 debug("usb_bulk_msg error status %ld\n",
723 us
->pusb_dev
->status
);
724 usb_stor_BBB_reset(us
);
725 return USB_STOR_TRANSPORT_FAILED
;
727 #ifdef BBB_XPORT_TRACE
728 ptr
= (unsigned char *)csw
;
729 for (index
= 0; index
< UMASS_BBB_CSW_SIZE
; index
++)
730 printf("ptr[%d] %#x ", index
, ptr
[index
]);
733 /* misuse pipe to get the residue */
734 pipe
= le32_to_cpu(csw
->dCSWDataResidue
);
735 if (pipe
== 0 && srb
->datalen
!= 0 && srb
->datalen
- data_actlen
!= 0)
736 pipe
= srb
->datalen
- data_actlen
;
737 if (CSWSIGNATURE
!= le32_to_cpu(csw
->dCSWSignature
)) {
738 debug("!CSWSIGNATURE\n");
739 usb_stor_BBB_reset(us
);
740 return USB_STOR_TRANSPORT_FAILED
;
741 } else if ((CBWTag
- 1) != le32_to_cpu(csw
->dCSWTag
)) {
743 usb_stor_BBB_reset(us
);
744 return USB_STOR_TRANSPORT_FAILED
;
745 } else if (csw
->bCSWStatus
> CSWSTATUS_PHASE
) {
747 usb_stor_BBB_reset(us
);
748 return USB_STOR_TRANSPORT_FAILED
;
749 } else if (csw
->bCSWStatus
== CSWSTATUS_PHASE
) {
751 usb_stor_BBB_reset(us
);
752 return USB_STOR_TRANSPORT_FAILED
;
753 } else if (data_actlen
> srb
->datalen
) {
754 debug("transferred %dB instead of %ldB\n",
755 data_actlen
, srb
->datalen
);
756 return USB_STOR_TRANSPORT_FAILED
;
757 } else if (csw
->bCSWStatus
== CSWSTATUS_FAILED
) {
759 return USB_STOR_TRANSPORT_FAILED
;
765 static int usb_stor_CB_transport(ccb
*srb
, struct us_data
*us
)
773 status
= USB_STOR_TRANSPORT_GOOD
;
776 /* issue the command */
778 result
= usb_stor_CB_comdat(srb
, us
);
779 debug("command / Data returned %d, status %lX\n",
780 result
, us
->pusb_dev
->status
);
781 /* if this is an CBI Protocol, get IRQ */
782 if (us
->protocol
== US_PR_CBI
) {
783 status
= usb_stor_CBI_get_status(srb
, us
);
784 /* if the status is error, report it */
785 if (status
== USB_STOR_TRANSPORT_ERROR
) {
786 debug(" USB CBI Command Error\n");
789 srb
->sense_buf
[12] = (unsigned char)(us
->ip_data
>> 8);
790 srb
->sense_buf
[13] = (unsigned char)(us
->ip_data
& 0xff);
792 /* if the status is good, report it */
793 if (status
== USB_STOR_TRANSPORT_GOOD
) {
794 debug(" USB CBI Command Good\n");
799 /* do we have to issue an auto request? */
800 /* HERE we have to check the result */
801 if ((result
< 0) && !(us
->pusb_dev
->status
& USB_ST_STALLED
)) {
802 debug("ERROR %lX\n", us
->pusb_dev
->status
);
803 us
->transport_reset(us
);
804 return USB_STOR_TRANSPORT_ERROR
;
806 if ((us
->protocol
== US_PR_CBI
) &&
807 ((srb
->cmd
[0] == SCSI_REQ_SENSE
) ||
808 (srb
->cmd
[0] == SCSI_INQUIRY
))) {
809 /* do not issue an autorequest after request sense */
810 debug("No auto request and good\n");
811 return USB_STOR_TRANSPORT_GOOD
;
813 /* issue an request_sense */
814 memset(&psrb
->cmd
[0], 0, 12);
815 psrb
->cmd
[0] = SCSI_REQ_SENSE
;
816 psrb
->cmd
[1] = srb
->lun
<< 5;
819 psrb
->pdata
= &srb
->sense_buf
[0];
821 /* issue the command */
822 result
= usb_stor_CB_comdat(psrb
, us
);
823 debug("auto request returned %d\n", result
);
824 /* if this is an CBI Protocol, get IRQ */
825 if (us
->protocol
== US_PR_CBI
)
826 status
= usb_stor_CBI_get_status(psrb
, us
);
828 if ((result
< 0) && !(us
->pusb_dev
->status
& USB_ST_STALLED
)) {
829 debug(" AUTO REQUEST ERROR %ld\n",
830 us
->pusb_dev
->status
);
831 return USB_STOR_TRANSPORT_ERROR
;
833 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
834 srb
->sense_buf
[0], srb
->sense_buf
[2],
835 srb
->sense_buf
[12], srb
->sense_buf
[13]);
836 /* Check the auto request result */
837 if ((srb
->sense_buf
[2] == 0) &&
838 (srb
->sense_buf
[12] == 0) &&
839 (srb
->sense_buf
[13] == 0)) {
841 return USB_STOR_TRANSPORT_GOOD
;
844 /* Check the auto request result */
845 switch (srb
->sense_buf
[2]) {
847 /* Recovered Error */
848 return USB_STOR_TRANSPORT_GOOD
;
852 if (notready
++ > USB_TRANSPORT_NOT_READY_RETRY
) {
853 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
854 " 0x%02X (NOT READY)\n", srb
->cmd
[0],
855 srb
->sense_buf
[0], srb
->sense_buf
[2],
856 srb
->sense_buf
[12], srb
->sense_buf
[13]);
857 return USB_STOR_TRANSPORT_FAILED
;
864 if (retry
++ > USB_TRANSPORT_UNKNOWN_RETRY
) {
865 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
866 " 0x%02X\n", srb
->cmd
[0], srb
->sense_buf
[0],
867 srb
->sense_buf
[2], srb
->sense_buf
[12],
869 return USB_STOR_TRANSPORT_FAILED
;
874 return USB_STOR_TRANSPORT_FAILED
;
878 static int usb_inquiry(ccb
*srb
, struct us_data
*ss
)
883 memset(&srb
->cmd
[0], 0, 12);
884 srb
->cmd
[0] = SCSI_INQUIRY
;
885 srb
->cmd
[1] = srb
->lun
<< 5;
889 i
= ss
->transport(srb
, ss
);
890 debug("inquiry returns %d\n", i
);
896 printf("error in inquiry\n");
902 static int usb_request_sense(ccb
*srb
, struct us_data
*ss
)
906 ptr
= (char *)srb
->pdata
;
907 memset(&srb
->cmd
[0], 0, 12);
908 srb
->cmd
[0] = SCSI_REQ_SENSE
;
909 srb
->cmd
[1] = srb
->lun
<< 5;
912 srb
->pdata
= &srb
->sense_buf
[0];
914 ss
->transport(srb
, ss
);
915 debug("Request Sense returned %02X %02X %02X\n",
916 srb
->sense_buf
[2], srb
->sense_buf
[12],
918 srb
->pdata
= (uchar
*)ptr
;
922 static int usb_test_unit_ready(ccb
*srb
, struct us_data
*ss
)
927 memset(&srb
->cmd
[0], 0, 12);
928 srb
->cmd
[0] = SCSI_TST_U_RDY
;
929 srb
->cmd
[1] = srb
->lun
<< 5;
932 if (ss
->transport(srb
, ss
) == USB_STOR_TRANSPORT_GOOD
) {
933 ss
->flags
|= USB_READY
;
936 usb_request_sense(srb
, ss
);
938 * Check the Key Code Qualifier, if it matches
939 * "Not Ready - medium not present"
940 * (the sense Key equals 0x2 and the ASC is 0x3a)
941 * return immediately as the medium being absent won't change
942 * unless there is a user action.
944 if ((srb
->sense_buf
[2] == 0x02) &&
945 (srb
->sense_buf
[12] == 0x3a))
953 static int usb_read_capacity(ccb
*srb
, struct us_data
*ss
)
959 memset(&srb
->cmd
[0], 0, 12);
960 srb
->cmd
[0] = SCSI_RD_CAPAC
;
961 srb
->cmd
[1] = srb
->lun
<< 5;
964 if (ss
->transport(srb
, ss
) == USB_STOR_TRANSPORT_GOOD
)
971 static int usb_read_10(ccb
*srb
, struct us_data
*ss
, unsigned long start
,
972 unsigned short blocks
)
974 memset(&srb
->cmd
[0], 0, 12);
975 srb
->cmd
[0] = SCSI_READ10
;
976 srb
->cmd
[1] = srb
->lun
<< 5;
977 srb
->cmd
[2] = ((unsigned char) (start
>> 24)) & 0xff;
978 srb
->cmd
[3] = ((unsigned char) (start
>> 16)) & 0xff;
979 srb
->cmd
[4] = ((unsigned char) (start
>> 8)) & 0xff;
980 srb
->cmd
[5] = ((unsigned char) (start
)) & 0xff;
981 srb
->cmd
[7] = ((unsigned char) (blocks
>> 8)) & 0xff;
982 srb
->cmd
[8] = (unsigned char) blocks
& 0xff;
984 debug("read10: start %lx blocks %x\n", start
, blocks
);
985 return ss
->transport(srb
, ss
);
988 static int usb_write_10(ccb
*srb
, struct us_data
*ss
, unsigned long start
,
989 unsigned short blocks
)
991 memset(&srb
->cmd
[0], 0, 12);
992 srb
->cmd
[0] = SCSI_WRITE10
;
993 srb
->cmd
[1] = srb
->lun
<< 5;
994 srb
->cmd
[2] = ((unsigned char) (start
>> 24)) & 0xff;
995 srb
->cmd
[3] = ((unsigned char) (start
>> 16)) & 0xff;
996 srb
->cmd
[4] = ((unsigned char) (start
>> 8)) & 0xff;
997 srb
->cmd
[5] = ((unsigned char) (start
)) & 0xff;
998 srb
->cmd
[7] = ((unsigned char) (blocks
>> 8)) & 0xff;
999 srb
->cmd
[8] = (unsigned char) blocks
& 0xff;
1001 debug("write10: start %lx blocks %x\n", start
, blocks
);
1002 return ss
->transport(srb
, ss
);
1006 #ifdef CONFIG_USB_BIN_FIXUP
1008 * Some USB storage devices queried for SCSI identification data respond with
1009 * binary strings, which if output to the console freeze the terminal. The
1010 * workaround is to modify the vendor and product strings read from such
1011 * device with proper values (as reported by 'usb info').
1013 * Vendor and product length limits are taken from the definition of
1014 * block_dev_desc_t in include/part.h.
1016 static void usb_bin_fixup(struct usb_device_descriptor descriptor
,
1017 unsigned char vendor
[],
1018 unsigned char product
[]) {
1019 const unsigned char max_vendor_len
= 40;
1020 const unsigned char max_product_len
= 20;
1021 if (descriptor
.idVendor
== 0x0424 && descriptor
.idProduct
== 0x223a) {
1022 strncpy((char *)vendor
, "SMSC", max_vendor_len
);
1023 strncpy((char *)product
, "Flash Media Cntrller",
1027 #endif /* CONFIG_USB_BIN_FIXUP */
1029 unsigned long usb_stor_read(int device
, lbaint_t blknr
,
1030 lbaint_t blkcnt
, void *buffer
)
1032 lbaint_t start
, blks
;
1034 unsigned short smallblks
;
1035 struct usb_device
*dev
;
1038 ccb
*srb
= &usb_ccb
;
1045 debug("\nusb_read: dev %d\n", device
);
1046 dev
= usb_dev_desc
[device
].priv
;
1048 debug("%s: No device\n", __func__
);
1051 ss
= (struct us_data
*)dev
->privptr
;
1053 usb_disable_asynch(1); /* asynch transfer not allowed */
1054 srb
->lun
= usb_dev_desc
[device
].lun
;
1055 buf_addr
= (uintptr_t)buffer
;
1059 debug("\nusb_read: dev %d startblk " LBAF
", blccnt " LBAF
1060 " buffer %" PRIxPTR
"\n", device
, start
, blks
, buf_addr
);
1063 /* XXX need some comment here */
1065 srb
->pdata
= (unsigned char *)buf_addr
;
1066 if (blks
> USB_MAX_XFER_BLK
)
1067 smallblks
= USB_MAX_XFER_BLK
;
1069 smallblks
= (unsigned short) blks
;
1071 if (smallblks
== USB_MAX_XFER_BLK
)
1072 usb_show_progress();
1073 srb
->datalen
= usb_dev_desc
[device
].blksz
* smallblks
;
1074 srb
->pdata
= (unsigned char *)buf_addr
;
1075 if (usb_read_10(srb
, ss
, start
, smallblks
)) {
1076 debug("Read ERROR\n");
1077 usb_request_sense(srb
, ss
);
1085 buf_addr
+= srb
->datalen
;
1086 } while (blks
!= 0);
1087 ss
->flags
&= ~USB_READY
;
1089 debug("usb_read: end startblk " LBAF
1090 ", blccnt %x buffer %" PRIxPTR
"\n",
1091 start
, smallblks
, buf_addr
);
1093 usb_disable_asynch(0); /* asynch transfer allowed */
1094 if (blkcnt
>= USB_MAX_XFER_BLK
)
1099 unsigned long usb_stor_write(int device
, lbaint_t blknr
,
1100 lbaint_t blkcnt
, const void *buffer
)
1102 lbaint_t start
, blks
;
1104 unsigned short smallblks
;
1105 struct usb_device
*dev
;
1108 ccb
*srb
= &usb_ccb
;
1115 debug("\nusb_write: dev %d\n", device
);
1116 dev
= usb_dev_desc
[device
].priv
;
1119 ss
= (struct us_data
*)dev
->privptr
;
1121 usb_disable_asynch(1); /* asynch transfer not allowed */
1123 srb
->lun
= usb_dev_desc
[device
].lun
;
1124 buf_addr
= (uintptr_t)buffer
;
1128 debug("\nusb_write: dev %d startblk " LBAF
", blccnt " LBAF
1129 " buffer %" PRIxPTR
"\n", device
, start
, blks
, buf_addr
);
1132 /* If write fails retry for max retry count else
1133 * return with number of blocks written successfully.
1136 srb
->pdata
= (unsigned char *)buf_addr
;
1137 if (blks
> USB_MAX_XFER_BLK
)
1138 smallblks
= USB_MAX_XFER_BLK
;
1140 smallblks
= (unsigned short) blks
;
1142 if (smallblks
== USB_MAX_XFER_BLK
)
1143 usb_show_progress();
1144 srb
->datalen
= usb_dev_desc
[device
].blksz
* smallblks
;
1145 srb
->pdata
= (unsigned char *)buf_addr
;
1146 if (usb_write_10(srb
, ss
, start
, smallblks
)) {
1147 debug("Write ERROR\n");
1148 usb_request_sense(srb
, ss
);
1156 buf_addr
+= srb
->datalen
;
1157 } while (blks
!= 0);
1158 ss
->flags
&= ~USB_READY
;
1160 debug("usb_write: end startblk " LBAF
", blccnt %x buffer %"
1161 PRIxPTR
"\n", start
, smallblks
, buf_addr
);
1163 usb_disable_asynch(0); /* asynch transfer allowed */
1164 if (blkcnt
>= USB_MAX_XFER_BLK
)
1170 /* Probe to see if a new device is actually a Storage device */
1171 int usb_storage_probe(struct usb_device
*dev
, unsigned int ifnum
,
1174 struct usb_interface
*iface
;
1176 struct usb_endpoint_descriptor
*ep_desc
;
1177 unsigned int flags
= 0;
1182 /* let's examine the device now */
1183 iface
= &dev
->config
.if_desc
[ifnum
];
1186 /* this is the place to patch some storage devices */
1187 debug("iVendor %X iProduct %X\n", dev
->descriptor
.idVendor
,
1188 dev
->descriptor
.idProduct
);
1190 if ((dev
->descriptor
.idVendor
) == 0x066b &&
1191 (dev
->descriptor
.idProduct
) == 0x0103) {
1192 debug("patched for E-USB\n");
1193 protocol
= US_PR_CB
;
1194 subclass
= US_SC_UFI
; /* an assumption */
1198 if (dev
->descriptor
.bDeviceClass
!= 0 ||
1199 iface
->desc
.bInterfaceClass
!= USB_CLASS_MASS_STORAGE
||
1200 iface
->desc
.bInterfaceSubClass
< US_SC_MIN
||
1201 iface
->desc
.bInterfaceSubClass
> US_SC_MAX
) {
1202 debug("Not mass storage\n");
1203 /* if it's not a mass storage, we go no further */
1207 memset(ss
, 0, sizeof(struct us_data
));
1209 /* At this point, we know we've got a live one */
1210 debug("\n\nUSB Mass Storage device detected\n");
1212 /* Initialize the us_data structure with some useful info */
1216 ss
->attention_done
= 0;
1218 /* If the device has subclass and protocol, then use that. Otherwise,
1219 * take data from the specific interface.
1222 ss
->subclass
= subclass
;
1223 ss
->protocol
= protocol
;
1225 ss
->subclass
= iface
->desc
.bInterfaceSubClass
;
1226 ss
->protocol
= iface
->desc
.bInterfaceProtocol
;
1229 /* set the handler pointers based on the protocol */
1230 debug("Transport: ");
1231 switch (ss
->protocol
) {
1233 debug("Control/Bulk\n");
1234 ss
->transport
= usb_stor_CB_transport
;
1235 ss
->transport_reset
= usb_stor_CB_reset
;
1239 debug("Control/Bulk/Interrupt\n");
1240 ss
->transport
= usb_stor_CB_transport
;
1241 ss
->transport_reset
= usb_stor_CB_reset
;
1244 debug("Bulk/Bulk/Bulk\n");
1245 ss
->transport
= usb_stor_BBB_transport
;
1246 ss
->transport_reset
= usb_stor_BBB_reset
;
1249 printf("USB Storage Transport unknown / not yet implemented\n");
1255 * We are expecting a minimum of 2 endpoints - in and out (bulk).
1256 * An optional interrupt is OK (necessary for CBI protocol).
1257 * We will ignore any others.
1259 for (i
= 0; i
< iface
->desc
.bNumEndpoints
; i
++) {
1260 ep_desc
= &iface
->ep_desc
[i
];
1261 /* is it an BULK endpoint? */
1262 if ((ep_desc
->bmAttributes
&
1263 USB_ENDPOINT_XFERTYPE_MASK
) == USB_ENDPOINT_XFER_BULK
) {
1264 if (ep_desc
->bEndpointAddress
& USB_DIR_IN
)
1265 ss
->ep_in
= ep_desc
->bEndpointAddress
&
1266 USB_ENDPOINT_NUMBER_MASK
;
1269 ep_desc
->bEndpointAddress
&
1270 USB_ENDPOINT_NUMBER_MASK
;
1273 /* is it an interrupt endpoint? */
1274 if ((ep_desc
->bmAttributes
&
1275 USB_ENDPOINT_XFERTYPE_MASK
) == USB_ENDPOINT_XFER_INT
) {
1276 ss
->ep_int
= ep_desc
->bEndpointAddress
&
1277 USB_ENDPOINT_NUMBER_MASK
;
1278 ss
->irqinterval
= ep_desc
->bInterval
;
1281 debug("Endpoints In %d Out %d Int %d\n",
1282 ss
->ep_in
, ss
->ep_out
, ss
->ep_int
);
1284 /* Do some basic sanity checks, and bail if we find a problem */
1285 if (usb_set_interface(dev
, iface
->desc
.bInterfaceNumber
, 0) ||
1286 !ss
->ep_in
|| !ss
->ep_out
||
1287 (ss
->protocol
== US_PR_CBI
&& ss
->ep_int
== 0)) {
1288 debug("Problems with device\n");
1291 /* set class specific stuff */
1292 /* We only handle certain protocols. Currently, these are
1294 * The SFF8070 accepts the requests used in u-boot
1296 if (ss
->subclass
!= US_SC_UFI
&& ss
->subclass
!= US_SC_SCSI
&&
1297 ss
->subclass
!= US_SC_8070
) {
1298 printf("Sorry, protocol %d not yet supported.\n", ss
->subclass
);
1302 /* we had found an interrupt endpoint, prepare irq pipe
1303 * set up the IRQ pipe and handler
1305 ss
->irqinterval
= (ss
->irqinterval
> 0) ? ss
->irqinterval
: 255;
1306 ss
->irqpipe
= usb_rcvintpipe(ss
->pusb_dev
, ss
->ep_int
);
1307 ss
->irqmaxp
= usb_maxpacket(dev
, ss
->irqpipe
);
1308 dev
->irq_handle
= usb_stor_irq
;
1310 dev
->privptr
= (void *)ss
;
1314 int usb_stor_get_info(struct usb_device
*dev
, struct us_data
*ss
,
1315 block_dev_desc_t
*dev_desc
)
1317 unsigned char perq
, modi
;
1318 ALLOC_CACHE_ALIGN_BUFFER(u32
, cap
, 2);
1319 ALLOC_CACHE_ALIGN_BUFFER(u8
, usb_stor_buf
, 36);
1320 u32 capacity
, blksz
;
1321 ccb
*pccb
= &usb_ccb
;
1323 pccb
->pdata
= usb_stor_buf
;
1325 dev_desc
->target
= dev
->devnum
;
1326 pccb
->lun
= dev_desc
->lun
;
1327 debug(" address %d\n", dev_desc
->target
);
1329 if (usb_inquiry(pccb
, ss
)) {
1330 debug("%s: usb_inquiry() failed\n", __func__
);
1334 perq
= usb_stor_buf
[0];
1335 modi
= usb_stor_buf
[1];
1338 * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1339 * they would not respond to test_unit_ready .
1341 if (((perq
& 0x1f) == 0x1f) || ((perq
& 0x1f) == 0x0d)) {
1342 debug("%s: unknown/unsupported device\n", __func__
);
1345 if ((modi
&0x80) == 0x80) {
1346 /* drive is removable */
1347 dev_desc
->removable
= 1;
1349 memcpy(dev_desc
->vendor
, (const void *)&usb_stor_buf
[8], 8);
1350 memcpy(dev_desc
->product
, (const void *)&usb_stor_buf
[16], 16);
1351 memcpy(dev_desc
->revision
, (const void *)&usb_stor_buf
[32], 4);
1352 dev_desc
->vendor
[8] = 0;
1353 dev_desc
->product
[16] = 0;
1354 dev_desc
->revision
[4] = 0;
1355 #ifdef CONFIG_USB_BIN_FIXUP
1356 usb_bin_fixup(dev
->descriptor
, (uchar
*)dev_desc
->vendor
,
1357 (uchar
*)dev_desc
->product
);
1358 #endif /* CONFIG_USB_BIN_FIXUP */
1359 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf
[2],
1361 if (usb_test_unit_ready(pccb
, ss
)) {
1362 printf("Device NOT ready\n"
1363 " Request Sense returned %02X %02X %02X\n",
1364 pccb
->sense_buf
[2], pccb
->sense_buf
[12],
1365 pccb
->sense_buf
[13]);
1366 if (dev_desc
->removable
== 1) {
1367 dev_desc
->type
= perq
;
1372 pccb
->pdata
= (unsigned char *)cap
;
1373 memset(pccb
->pdata
, 0, 8);
1374 if (usb_read_capacity(pccb
, ss
) != 0) {
1375 printf("READ_CAP ERROR\n");
1379 ss
->flags
&= ~USB_READY
;
1380 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap
[0], cap
[1]);
1382 if (cap
[0] > (0x200000 * 10)) /* greater than 10 GByte */
1385 cap
[0] = cpu_to_be32(cap
[0]);
1386 cap
[1] = cpu_to_be32(cap
[1]);
1389 capacity
= be32_to_cpu(cap
[0]) + 1;
1390 blksz
= be32_to_cpu(cap
[1]);
1392 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity
, blksz
);
1393 dev_desc
->lba
= capacity
;
1394 dev_desc
->blksz
= blksz
;
1395 dev_desc
->log2blksz
= LOG2(dev_desc
->blksz
);
1396 dev_desc
->type
= perq
;
1397 debug(" address %d\n", dev_desc
->target
);
1398 debug("partype: %d\n", dev_desc
->part_type
);
1400 init_part(dev_desc
);
1402 debug("partype: %d\n", dev_desc
->part_type
);
1406 #ifdef CONFIG_DM_USB
1408 static int usb_mass_storage_probe(struct udevice
*dev
)
1410 struct usb_device
*udev
= dev_get_parentdata(dev
);
1413 usb_disable_asynch(1); /* asynch transfer not allowed */
1414 ret
= usb_stor_probe_device(udev
);
1415 usb_disable_asynch(0); /* asynch transfer allowed */
1420 static const struct udevice_id usb_mass_storage_ids
[] = {
1421 { .compatible
= "usb-mass-storage" },
1425 U_BOOT_DRIVER(usb_mass_storage
) = {
1426 .name
= "usb_mass_storage",
1427 .id
= UCLASS_MASS_STORAGE
,
1428 .of_match
= usb_mass_storage_ids
,
1429 .probe
= usb_mass_storage_probe
,
1432 UCLASS_DRIVER(usb_mass_storage
) = {
1433 .id
= UCLASS_MASS_STORAGE
,
1434 .name
= "usb_mass_storage",
1437 static const struct usb_device_id mass_storage_id_table
[] = {
1439 .match_flags
= USB_DEVICE_ID_MATCH_INT_CLASS
,
1440 .bInterfaceClass
= USB_CLASS_MASS_STORAGE
1442 { } /* Terminating entry */
1445 U_BOOT_USB_DEVICE(usb_mass_storage
, mass_storage_id_table
);