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.
43 #include <asm/byteorder.h>
44 #include <asm/processor.h>
45 #include <dm/device-internal.h>
50 #undef BBB_COMDAT_TRACE
51 #undef BBB_XPORT_TRACE
54 /* direction table -- this indicates the direction of the data
55 * transfer for each command code -- a 1 indicates input
57 static const unsigned char us_direction
[256/8] = {
58 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
59 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
60 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
61 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
63 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
65 static ccb usb_ccb
__attribute__((aligned(ARCH_DMA_MINALIGN
)));
68 #define USB_MAX_STOR_DEV 5
69 static int usb_max_devs
; /* number of highest available usb device */
71 static block_dev_desc_t usb_dev_desc
[USB_MAX_STOR_DEV
];
74 typedef int (*trans_cmnd
)(ccb
*cb
, struct us_data
*data
);
75 typedef int (*trans_reset
)(struct us_data
*data
);
78 struct usb_device
*pusb_dev
; /* this usb_device */
80 unsigned int flags
; /* from filter initially */
81 # define USB_READY (1 << 0)
82 unsigned char ifnum
; /* interface number */
83 unsigned char ep_in
; /* in endpoint */
84 unsigned char ep_out
; /* out ....... */
85 unsigned char ep_int
; /* interrupt . */
86 unsigned char subclass
; /* as in overview */
87 unsigned char protocol
; /* .............. */
88 unsigned char attention_done
; /* force attn on first cmd */
89 unsigned short ip_data
; /* interrupt data */
90 int action
; /* what to do */
91 int ip_wanted
; /* needed */
92 int *irq_handle
; /* for USB int requests */
93 unsigned int irqpipe
; /* pipe for release_irq */
94 unsigned char irqmaxp
; /* max packed for irq Pipe */
95 unsigned char irqinterval
; /* Intervall for IRQ Pipe */
96 ccb
*srb
; /* current srb */
97 trans_reset transport_reset
; /* reset routine */
98 trans_cmnd transport
; /* transport routine */
101 #ifdef CONFIG_USB_EHCI
103 * The U-Boot EHCI driver can handle any transfer length as long as there is
104 * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are
105 * limited to 65535 blocks.
107 #define USB_MAX_XFER_BLK 65535
109 #define USB_MAX_XFER_BLK 20
112 static struct us_data usb_stor
[USB_MAX_STOR_DEV
];
114 #define USB_STOR_TRANSPORT_GOOD 0
115 #define USB_STOR_TRANSPORT_FAILED -1
116 #define USB_STOR_TRANSPORT_ERROR -2
118 int usb_stor_get_info(struct usb_device
*dev
, struct us_data
*us
,
119 block_dev_desc_t
*dev_desc
);
120 int usb_storage_probe(struct usb_device
*dev
, unsigned int ifnum
,
122 unsigned long usb_stor_read(int device
, lbaint_t blknr
,
123 lbaint_t blkcnt
, void *buffer
);
124 unsigned long usb_stor_write(int device
, lbaint_t blknr
,
125 lbaint_t blkcnt
, const void *buffer
);
126 void uhci_show_temp_int_td(void);
128 #ifdef CONFIG_PARTITIONS
129 block_dev_desc_t
*usb_stor_get_dev(int index
)
131 return (index
< usb_max_devs
) ? &usb_dev_desc
[index
] : NULL
;
135 static void usb_show_progress(void)
140 /*******************************************************************************
141 * show info on storage devices; 'usb start/init' must be invoked earlier
142 * as we only retrieve structures populated during devices initialization
144 int usb_stor_info(void)
148 if (usb_max_devs
> 0) {
149 for (i
= 0; i
< usb_max_devs
; i
++) {
150 printf(" Device %d: ", i
);
151 dev_print(&usb_dev_desc
[i
]);
156 printf("No storage devices, perhaps not 'usb start'ed..?\n");
160 static unsigned int usb_get_max_lun(struct us_data
*us
)
163 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result
, 1);
164 len
= usb_control_msg(us
->pusb_dev
,
165 usb_rcvctrlpipe(us
->pusb_dev
, 0),
167 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
| USB_DIR_IN
,
169 result
, sizeof(char),
170 USB_CNTL_TIMEOUT
* 5);
171 debug("Get Max LUN -> len = %i, result = %i\n", len
, (int) *result
);
172 return (len
> 0) ? *result
: 0;
175 static int usb_stor_probe_device(struct usb_device
*dev
)
178 return -ENOENT
; /* no more devices available */
180 debug("\n\nProbing for storage\n");
181 if (usb_storage_probe(dev
, 0, &usb_stor
[usb_max_devs
])) {
182 /* OK, it's a storage device. Iterate over its LUNs
183 * and populate `usb_dev_desc'.
185 int lun
, max_lun
, start
= usb_max_devs
;
187 max_lun
= usb_get_max_lun(&usb_stor
[usb_max_devs
]);
189 lun
<= max_lun
&& usb_max_devs
< USB_MAX_STOR_DEV
;
191 struct block_dev_desc
*blkdev
;
193 blkdev
= &usb_dev_desc
[usb_max_devs
];
194 memset(blkdev
, '\0', sizeof(block_dev_desc_t
));
195 blkdev
->if_type
= IF_TYPE_USB
;
196 blkdev
->dev
= usb_max_devs
;
197 blkdev
->part_type
= PART_TYPE_UNKNOWN
;
198 blkdev
->target
= 0xff;
199 blkdev
->type
= DEV_TYPE_UNKNOWN
;
200 blkdev
->block_read
= usb_stor_read
;
201 blkdev
->block_write
= usb_stor_write
;
205 if (usb_stor_get_info(dev
, &usb_stor
[start
],
206 &usb_dev_desc
[usb_max_devs
]) ==
209 debug("%s: Found device %p\n", __func__
, dev
);
214 /* if storage device */
215 if (usb_max_devs
== USB_MAX_STOR_DEV
) {
216 printf("max USB Storage Device reached: %d stopping\n",
224 void usb_stor_reset(void)
229 #ifndef CONFIG_DM_USB
230 /*******************************************************************************
231 * scan the usb and reports device info
232 * to the user if mode = 1
233 * returns current device or -1 if no
235 int usb_stor_scan(int mode
)
240 printf(" scanning usb for storage devices... ");
242 usb_disable_asynch(1); /* asynch transfer not allowed */
245 for (i
= 0; i
< USB_MAX_DEVICE
; i
++) {
246 struct usb_device
*dev
;
248 dev
= usb_get_dev_index(i
); /* get device */
250 if (usb_stor_probe_device(dev
))
254 usb_disable_asynch(0); /* asynch transfer allowed */
255 printf("%d Storage Device(s) found\n", usb_max_devs
);
256 if (usb_max_devs
> 0)
262 static int usb_stor_irq(struct usb_device
*dev
)
265 us
= (struct us_data
*)dev
->privptr
;
275 static void usb_show_srb(ccb
*pccb
)
278 printf("SRB: len %d datalen 0x%lX\n ", pccb
->cmdlen
, pccb
->datalen
);
279 for (i
= 0; i
< 12; i
++)
280 printf("%02X ", pccb
->cmd
[i
]);
284 static void display_int_status(unsigned long tmp
)
286 printf("Status: %s %s %s %s %s %s %s\n",
287 (tmp
& USB_ST_ACTIVE
) ? "Active" : "",
288 (tmp
& USB_ST_STALLED
) ? "Stalled" : "",
289 (tmp
& USB_ST_BUF_ERR
) ? "Buffer Error" : "",
290 (tmp
& USB_ST_BABBLE_DET
) ? "Babble Det" : "",
291 (tmp
& USB_ST_NAK_REC
) ? "NAKed" : "",
292 (tmp
& USB_ST_CRC_ERR
) ? "CRC Error" : "",
293 (tmp
& USB_ST_BIT_ERR
) ? "Bitstuff Error" : "");
296 /***********************************************************************
297 * Data transfer routines
298 ***********************************************************************/
300 static int us_one_transfer(struct us_data
*us
, int pipe
, char *buf
, int length
)
309 /* determine the maximum packet size for these transfers */
310 max_size
= usb_maxpacket(us
->pusb_dev
, pipe
) * 16;
312 /* while we have data left to transfer */
315 /* calculate how long this will be -- maximum or a remainder */
316 this_xfer
= length
> max_size
? max_size
: length
;
319 /* setup the retry counter */
322 /* set up the transfer loop */
324 /* transfer the data */
325 debug("Bulk xfer 0x%lx(%d) try #%d\n",
326 (ulong
)map_to_sysmem(buf
), this_xfer
,
328 result
= usb_bulk_msg(us
->pusb_dev
, pipe
, buf
,
330 USB_CNTL_TIMEOUT
* 5);
331 debug("bulk_msg returned %d xferred %d/%d\n",
332 result
, partial
, this_xfer
);
333 if (us
->pusb_dev
->status
!= 0) {
334 /* if we stall, we need to clear it before
338 display_int_status(us
->pusb_dev
->status
);
340 if (us
->pusb_dev
->status
& USB_ST_STALLED
) {
341 debug("stalled ->clearing endpoint" \
342 "halt for pipe 0x%x\n", pipe
);
343 stat
= us
->pusb_dev
->status
;
344 usb_clear_halt(us
->pusb_dev
, pipe
);
345 us
->pusb_dev
->status
= stat
;
346 if (this_xfer
== partial
) {
347 debug("bulk transferred" \
350 us
->pusb_dev
->status
);
356 if (us
->pusb_dev
->status
& USB_ST_NAK_REC
) {
357 debug("Device NAKed bulk_msg\n");
360 debug("bulk transferred with error");
361 if (this_xfer
== partial
) {
362 debug(" %ld, but data ok\n",
363 us
->pusb_dev
->status
);
366 /* if our try counter reaches 0, bail out */
367 debug(" %ld, data %d\n",
368 us
->pusb_dev
->status
, partial
);
372 /* update to show what data was transferred */
373 this_xfer
-= partial
;
375 /* continue until this transfer is done */
379 /* if we get here, we're done and successful */
383 static int usb_stor_BBB_reset(struct us_data
*us
)
389 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
391 * For Reset Recovery the host shall issue in the following order:
392 * a) a Bulk-Only Mass Storage Reset
393 * b) a Clear Feature HALT to the Bulk-In endpoint
394 * c) a Clear Feature HALT to the Bulk-Out endpoint
396 * This is done in 3 steps.
398 * If the reset doesn't succeed, the device should be port reset.
400 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
402 debug("BBB_reset\n");
403 result
= usb_control_msg(us
->pusb_dev
, usb_sndctrlpipe(us
->pusb_dev
, 0),
405 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
406 0, us
->ifnum
, NULL
, 0, USB_CNTL_TIMEOUT
* 5);
408 if ((result
< 0) && (us
->pusb_dev
->status
& USB_ST_STALLED
)) {
409 debug("RESET:stall\n");
413 /* long wait for reset */
415 debug("BBB_reset result %d: status %lX reset\n",
416 result
, us
->pusb_dev
->status
);
417 pipe
= usb_rcvbulkpipe(us
->pusb_dev
, us
->ep_in
);
418 result
= usb_clear_halt(us
->pusb_dev
, pipe
);
419 /* long wait for reset */
421 debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
422 result
, us
->pusb_dev
->status
);
423 /* long wait for reset */
424 pipe
= usb_sndbulkpipe(us
->pusb_dev
, us
->ep_out
);
425 result
= usb_clear_halt(us
->pusb_dev
, pipe
);
427 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
428 result
, us
->pusb_dev
->status
);
429 debug("BBB_reset done\n");
433 /* FIXME: this reset function doesn't really reset the port, and it
434 * should. Actually it should probably do what it's doing here, and
435 * reset the port physically
437 static int usb_stor_CB_reset(struct us_data
*us
)
439 unsigned char cmd
[12];
443 memset(cmd
, 0xff, sizeof(cmd
));
444 cmd
[0] = SCSI_SEND_DIAG
;
446 result
= usb_control_msg(us
->pusb_dev
, usb_sndctrlpipe(us
->pusb_dev
, 0),
448 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
449 0, us
->ifnum
, cmd
, sizeof(cmd
),
450 USB_CNTL_TIMEOUT
* 5);
452 /* long wait for reset */
454 debug("CB_reset result %d: status %lX clearing endpoint halt\n",
455 result
, us
->pusb_dev
->status
);
456 usb_clear_halt(us
->pusb_dev
, usb_rcvbulkpipe(us
->pusb_dev
, us
->ep_in
));
457 usb_clear_halt(us
->pusb_dev
, usb_rcvbulkpipe(us
->pusb_dev
, us
->ep_out
));
459 debug("CB_reset done\n");
464 * Set up the command for a BBB device. Note that the actual SCSI
465 * command is copied into cbw.CBWCDB.
467 static int usb_stor_BBB_comdat(ccb
*srb
, struct us_data
*us
)
473 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw
, cbw
, 1);
475 dir_in
= US_DIRECTION(srb
->cmd
[0]);
477 #ifdef BBB_COMDAT_TRACE
478 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
479 dir_in
, srb
->lun
, srb
->cmdlen
, srb
->cmd
, srb
->datalen
,
482 for (result
= 0; result
< srb
->cmdlen
; result
++)
483 printf("cmd[%d] %#x ", result
, srb
->cmd
[result
]);
488 if (!(srb
->cmdlen
<= CBWCDBLENGTH
)) {
489 debug("usb_stor_BBB_comdat:cmdlen too large\n");
493 /* always OUT to the ep */
494 pipe
= usb_sndbulkpipe(us
->pusb_dev
, us
->ep_out
);
496 cbw
->dCBWSignature
= cpu_to_le32(CBWSIGNATURE
);
497 cbw
->dCBWTag
= cpu_to_le32(CBWTag
++);
498 cbw
->dCBWDataTransferLength
= cpu_to_le32(srb
->datalen
);
499 cbw
->bCBWFlags
= (dir_in
? CBWFLAGS_IN
: CBWFLAGS_OUT
);
500 cbw
->bCBWLUN
= srb
->lun
;
501 cbw
->bCDBLength
= srb
->cmdlen
;
502 /* copy the command data into the CBW command data buffer */
505 memcpy(cbw
->CBWCDB
, srb
->cmd
, srb
->cmdlen
);
506 result
= usb_bulk_msg(us
->pusb_dev
, pipe
, cbw
, UMASS_BBB_CBW_SIZE
,
507 &actlen
, USB_CNTL_TIMEOUT
* 5);
509 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
513 /* FIXME: we also need a CBI_command which sets up the completion
514 * interrupt, and waits for it
516 static int usb_stor_CB_comdat(ccb
*srb
, struct us_data
*us
)
521 unsigned long status
;
524 dir_in
= US_DIRECTION(srb
->cmd
[0]);
527 pipe
= usb_rcvbulkpipe(us
->pusb_dev
, us
->ep_in
);
529 pipe
= usb_sndbulkpipe(us
->pusb_dev
, us
->ep_out
);
532 debug("CBI gets a command: Try %d\n", 5 - retry
);
536 /* let's send the command via the control pipe */
537 result
= usb_control_msg(us
->pusb_dev
,
538 usb_sndctrlpipe(us
->pusb_dev
, 0),
540 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
542 srb
->cmd
, srb
->cmdlen
,
543 USB_CNTL_TIMEOUT
* 5);
544 debug("CB_transport: control msg returned %d, status %lX\n",
545 result
, us
->pusb_dev
->status
);
546 /* check the return code for the command */
548 if (us
->pusb_dev
->status
& USB_ST_STALLED
) {
549 status
= us
->pusb_dev
->status
;
550 debug(" stall during command found," \
552 usb_clear_halt(us
->pusb_dev
,
553 usb_sndctrlpipe(us
->pusb_dev
, 0));
554 us
->pusb_dev
->status
= status
;
556 debug(" error during command %02X" \
557 " Stat = %lX\n", srb
->cmd
[0],
558 us
->pusb_dev
->status
);
561 /* transfer the data payload for this command, if one exists*/
563 debug("CB_transport: control msg returned %d," \
564 " direction is %s to go 0x%lx\n", result
,
565 dir_in
? "IN" : "OUT", srb
->datalen
);
567 result
= us_one_transfer(us
, pipe
, (char *)srb
->pdata
,
569 debug("CBI attempted to transfer data," \
570 " result is %d status %lX, len %d\n",
571 result
, us
->pusb_dev
->status
,
572 us
->pusb_dev
->act_len
);
573 if (!(us
->pusb_dev
->status
& USB_ST_NAK_REC
))
575 } /* if (srb->datalen) */
585 static int usb_stor_CBI_get_status(ccb
*srb
, struct us_data
*us
)
590 submit_int_msg(us
->pusb_dev
, us
->irqpipe
,
591 (void *) &us
->ip_data
, us
->irqmaxp
, us
->irqinterval
);
594 if (us
->ip_wanted
== 0)
599 printf(" Did not get interrupt on CBI\n");
601 return USB_STOR_TRANSPORT_ERROR
;
603 debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
604 us
->ip_data
, us
->pusb_dev
->irq_act_len
,
605 us
->pusb_dev
->irq_status
);
606 /* UFI gives us ASC and ASCQ, like a request sense */
607 if (us
->subclass
== US_SC_UFI
) {
608 if (srb
->cmd
[0] == SCSI_REQ_SENSE
||
609 srb
->cmd
[0] == SCSI_INQUIRY
)
610 return USB_STOR_TRANSPORT_GOOD
; /* Good */
611 else if (us
->ip_data
)
612 return USB_STOR_TRANSPORT_FAILED
;
614 return USB_STOR_TRANSPORT_GOOD
;
616 /* otherwise, we interpret the data normally */
617 switch (us
->ip_data
) {
619 return USB_STOR_TRANSPORT_GOOD
;
621 return USB_STOR_TRANSPORT_FAILED
;
623 return USB_STOR_TRANSPORT_ERROR
;
625 return USB_STOR_TRANSPORT_ERROR
;
628 #define USB_TRANSPORT_UNKNOWN_RETRY 5
629 #define USB_TRANSPORT_NOT_READY_RETRY 10
631 /* clear a stall on an endpoint - special for BBB devices */
632 static int usb_stor_BBB_clear_endpt_stall(struct us_data
*us
, __u8 endpt
)
636 /* ENDPOINT_HALT = 0, so set value to 0 */
637 result
= usb_control_msg(us
->pusb_dev
, usb_sndctrlpipe(us
->pusb_dev
, 0),
638 USB_REQ_CLEAR_FEATURE
, USB_RECIP_ENDPOINT
,
639 0, endpt
, NULL
, 0, USB_CNTL_TIMEOUT
* 5);
643 static int usb_stor_BBB_transport(ccb
*srb
, struct us_data
*us
)
647 int actlen
, data_actlen
;
648 unsigned int pipe
, pipein
, pipeout
;
649 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw
, csw
, 1);
650 #ifdef BBB_XPORT_TRACE
655 dir_in
= US_DIRECTION(srb
->cmd
[0]);
658 debug("COMMAND phase\n");
659 result
= usb_stor_BBB_comdat(srb
, us
);
661 debug("failed to send CBW status %ld\n",
662 us
->pusb_dev
->status
);
663 usb_stor_BBB_reset(us
);
664 return USB_STOR_TRANSPORT_FAILED
;
666 if (!(us
->flags
& USB_READY
))
668 pipein
= usb_rcvbulkpipe(us
->pusb_dev
, us
->ep_in
);
669 pipeout
= usb_sndbulkpipe(us
->pusb_dev
, us
->ep_out
);
670 /* DATA phase + error handling */
672 /* no data, go immediately to the STATUS phase */
673 if (srb
->datalen
== 0)
675 debug("DATA phase\n");
681 result
= usb_bulk_msg(us
->pusb_dev
, pipe
, srb
->pdata
, srb
->datalen
,
682 &data_actlen
, USB_CNTL_TIMEOUT
* 5);
683 /* special handling of STALL in DATA phase */
684 if ((result
< 0) && (us
->pusb_dev
->status
& USB_ST_STALLED
)) {
685 debug("DATA:stall\n");
686 /* clear the STALL on the endpoint */
687 result
= usb_stor_BBB_clear_endpt_stall(us
,
688 dir_in
? us
->ep_in
: us
->ep_out
);
690 /* continue on to STATUS phase */
694 debug("usb_bulk_msg error status %ld\n",
695 us
->pusb_dev
->status
);
696 usb_stor_BBB_reset(us
);
697 return USB_STOR_TRANSPORT_FAILED
;
699 #ifdef BBB_XPORT_TRACE
700 for (index
= 0; index
< data_actlen
; index
++)
701 printf("pdata[%d] %#x ", index
, srb
->pdata
[index
]);
704 /* STATUS phase + error handling */
708 debug("STATUS phase\n");
709 result
= usb_bulk_msg(us
->pusb_dev
, pipein
, csw
, UMASS_BBB_CSW_SIZE
,
710 &actlen
, USB_CNTL_TIMEOUT
*5);
712 /* special handling of STALL in STATUS phase */
713 if ((result
< 0) && (retry
< 1) &&
714 (us
->pusb_dev
->status
& USB_ST_STALLED
)) {
715 debug("STATUS:stall\n");
716 /* clear the STALL on the endpoint */
717 result
= usb_stor_BBB_clear_endpt_stall(us
, us
->ep_in
);
718 if (result
>= 0 && (retry
++ < 1))
723 debug("usb_bulk_msg error status %ld\n",
724 us
->pusb_dev
->status
);
725 usb_stor_BBB_reset(us
);
726 return USB_STOR_TRANSPORT_FAILED
;
728 #ifdef BBB_XPORT_TRACE
729 ptr
= (unsigned char *)csw
;
730 for (index
= 0; index
< UMASS_BBB_CSW_SIZE
; index
++)
731 printf("ptr[%d] %#x ", index
, ptr
[index
]);
734 /* misuse pipe to get the residue */
735 pipe
= le32_to_cpu(csw
->dCSWDataResidue
);
736 if (pipe
== 0 && srb
->datalen
!= 0 && srb
->datalen
- data_actlen
!= 0)
737 pipe
= srb
->datalen
- data_actlen
;
738 if (CSWSIGNATURE
!= le32_to_cpu(csw
->dCSWSignature
)) {
739 debug("!CSWSIGNATURE\n");
740 usb_stor_BBB_reset(us
);
741 return USB_STOR_TRANSPORT_FAILED
;
742 } else if ((CBWTag
- 1) != le32_to_cpu(csw
->dCSWTag
)) {
744 usb_stor_BBB_reset(us
);
745 return USB_STOR_TRANSPORT_FAILED
;
746 } else if (csw
->bCSWStatus
> CSWSTATUS_PHASE
) {
748 usb_stor_BBB_reset(us
);
749 return USB_STOR_TRANSPORT_FAILED
;
750 } else if (csw
->bCSWStatus
== CSWSTATUS_PHASE
) {
752 usb_stor_BBB_reset(us
);
753 return USB_STOR_TRANSPORT_FAILED
;
754 } else if (data_actlen
> srb
->datalen
) {
755 debug("transferred %dB instead of %ldB\n",
756 data_actlen
, srb
->datalen
);
757 return USB_STOR_TRANSPORT_FAILED
;
758 } else if (csw
->bCSWStatus
== CSWSTATUS_FAILED
) {
760 return USB_STOR_TRANSPORT_FAILED
;
766 static int usb_stor_CB_transport(ccb
*srb
, struct us_data
*us
)
774 status
= USB_STOR_TRANSPORT_GOOD
;
777 /* issue the command */
779 result
= usb_stor_CB_comdat(srb
, us
);
780 debug("command / Data returned %d, status %lX\n",
781 result
, us
->pusb_dev
->status
);
782 /* if this is an CBI Protocol, get IRQ */
783 if (us
->protocol
== US_PR_CBI
) {
784 status
= usb_stor_CBI_get_status(srb
, us
);
785 /* if the status is error, report it */
786 if (status
== USB_STOR_TRANSPORT_ERROR
) {
787 debug(" USB CBI Command Error\n");
790 srb
->sense_buf
[12] = (unsigned char)(us
->ip_data
>> 8);
791 srb
->sense_buf
[13] = (unsigned char)(us
->ip_data
& 0xff);
793 /* if the status is good, report it */
794 if (status
== USB_STOR_TRANSPORT_GOOD
) {
795 debug(" USB CBI Command Good\n");
800 /* do we have to issue an auto request? */
801 /* HERE we have to check the result */
802 if ((result
< 0) && !(us
->pusb_dev
->status
& USB_ST_STALLED
)) {
803 debug("ERROR %lX\n", us
->pusb_dev
->status
);
804 us
->transport_reset(us
);
805 return USB_STOR_TRANSPORT_ERROR
;
807 if ((us
->protocol
== US_PR_CBI
) &&
808 ((srb
->cmd
[0] == SCSI_REQ_SENSE
) ||
809 (srb
->cmd
[0] == SCSI_INQUIRY
))) {
810 /* do not issue an autorequest after request sense */
811 debug("No auto request and good\n");
812 return USB_STOR_TRANSPORT_GOOD
;
814 /* issue an request_sense */
815 memset(&psrb
->cmd
[0], 0, 12);
816 psrb
->cmd
[0] = SCSI_REQ_SENSE
;
817 psrb
->cmd
[1] = srb
->lun
<< 5;
820 psrb
->pdata
= &srb
->sense_buf
[0];
822 /* issue the command */
823 result
= usb_stor_CB_comdat(psrb
, us
);
824 debug("auto request returned %d\n", result
);
825 /* if this is an CBI Protocol, get IRQ */
826 if (us
->protocol
== US_PR_CBI
)
827 status
= usb_stor_CBI_get_status(psrb
, us
);
829 if ((result
< 0) && !(us
->pusb_dev
->status
& USB_ST_STALLED
)) {
830 debug(" AUTO REQUEST ERROR %ld\n",
831 us
->pusb_dev
->status
);
832 return USB_STOR_TRANSPORT_ERROR
;
834 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
835 srb
->sense_buf
[0], srb
->sense_buf
[2],
836 srb
->sense_buf
[12], srb
->sense_buf
[13]);
837 /* Check the auto request result */
838 if ((srb
->sense_buf
[2] == 0) &&
839 (srb
->sense_buf
[12] == 0) &&
840 (srb
->sense_buf
[13] == 0)) {
842 return USB_STOR_TRANSPORT_GOOD
;
845 /* Check the auto request result */
846 switch (srb
->sense_buf
[2]) {
848 /* Recovered Error */
849 return USB_STOR_TRANSPORT_GOOD
;
853 if (notready
++ > USB_TRANSPORT_NOT_READY_RETRY
) {
854 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
855 " 0x%02X (NOT READY)\n", srb
->cmd
[0],
856 srb
->sense_buf
[0], srb
->sense_buf
[2],
857 srb
->sense_buf
[12], srb
->sense_buf
[13]);
858 return USB_STOR_TRANSPORT_FAILED
;
865 if (retry
++ > USB_TRANSPORT_UNKNOWN_RETRY
) {
866 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
867 " 0x%02X\n", srb
->cmd
[0], srb
->sense_buf
[0],
868 srb
->sense_buf
[2], srb
->sense_buf
[12],
870 return USB_STOR_TRANSPORT_FAILED
;
875 return USB_STOR_TRANSPORT_FAILED
;
879 static int usb_inquiry(ccb
*srb
, struct us_data
*ss
)
884 memset(&srb
->cmd
[0], 0, 12);
885 srb
->cmd
[0] = SCSI_INQUIRY
;
886 srb
->cmd
[1] = srb
->lun
<< 5;
890 i
= ss
->transport(srb
, ss
);
891 debug("inquiry returns %d\n", i
);
897 printf("error in inquiry\n");
903 static int usb_request_sense(ccb
*srb
, struct us_data
*ss
)
907 ptr
= (char *)srb
->pdata
;
908 memset(&srb
->cmd
[0], 0, 12);
909 srb
->cmd
[0] = SCSI_REQ_SENSE
;
910 srb
->cmd
[1] = srb
->lun
<< 5;
913 srb
->pdata
= &srb
->sense_buf
[0];
915 ss
->transport(srb
, ss
);
916 debug("Request Sense returned %02X %02X %02X\n",
917 srb
->sense_buf
[2], srb
->sense_buf
[12],
919 srb
->pdata
= (uchar
*)ptr
;
923 static int usb_test_unit_ready(ccb
*srb
, struct us_data
*ss
)
928 memset(&srb
->cmd
[0], 0, 12);
929 srb
->cmd
[0] = SCSI_TST_U_RDY
;
930 srb
->cmd
[1] = srb
->lun
<< 5;
933 if (ss
->transport(srb
, ss
) == USB_STOR_TRANSPORT_GOOD
) {
934 ss
->flags
|= USB_READY
;
937 usb_request_sense(srb
, ss
);
939 * Check the Key Code Qualifier, if it matches
940 * "Not Ready - medium not present"
941 * (the sense Key equals 0x2 and the ASC is 0x3a)
942 * return immediately as the medium being absent won't change
943 * unless there is a user action.
945 if ((srb
->sense_buf
[2] == 0x02) &&
946 (srb
->sense_buf
[12] == 0x3a))
954 static int usb_read_capacity(ccb
*srb
, struct us_data
*ss
)
960 memset(&srb
->cmd
[0], 0, 12);
961 srb
->cmd
[0] = SCSI_RD_CAPAC
;
962 srb
->cmd
[1] = srb
->lun
<< 5;
965 if (ss
->transport(srb
, ss
) == USB_STOR_TRANSPORT_GOOD
)
972 static int usb_read_10(ccb
*srb
, struct us_data
*ss
, unsigned long start
,
973 unsigned short blocks
)
975 memset(&srb
->cmd
[0], 0, 12);
976 srb
->cmd
[0] = SCSI_READ10
;
977 srb
->cmd
[1] = srb
->lun
<< 5;
978 srb
->cmd
[2] = ((unsigned char) (start
>> 24)) & 0xff;
979 srb
->cmd
[3] = ((unsigned char) (start
>> 16)) & 0xff;
980 srb
->cmd
[4] = ((unsigned char) (start
>> 8)) & 0xff;
981 srb
->cmd
[5] = ((unsigned char) (start
)) & 0xff;
982 srb
->cmd
[7] = ((unsigned char) (blocks
>> 8)) & 0xff;
983 srb
->cmd
[8] = (unsigned char) blocks
& 0xff;
985 debug("read10: start %lx blocks %x\n", start
, blocks
);
986 return ss
->transport(srb
, ss
);
989 static int usb_write_10(ccb
*srb
, struct us_data
*ss
, unsigned long start
,
990 unsigned short blocks
)
992 memset(&srb
->cmd
[0], 0, 12);
993 srb
->cmd
[0] = SCSI_WRITE10
;
994 srb
->cmd
[1] = srb
->lun
<< 5;
995 srb
->cmd
[2] = ((unsigned char) (start
>> 24)) & 0xff;
996 srb
->cmd
[3] = ((unsigned char) (start
>> 16)) & 0xff;
997 srb
->cmd
[4] = ((unsigned char) (start
>> 8)) & 0xff;
998 srb
->cmd
[5] = ((unsigned char) (start
)) & 0xff;
999 srb
->cmd
[7] = ((unsigned char) (blocks
>> 8)) & 0xff;
1000 srb
->cmd
[8] = (unsigned char) blocks
& 0xff;
1002 debug("write10: start %lx blocks %x\n", start
, blocks
);
1003 return ss
->transport(srb
, ss
);
1007 #ifdef CONFIG_USB_BIN_FIXUP
1009 * Some USB storage devices queried for SCSI identification data respond with
1010 * binary strings, which if output to the console freeze the terminal. The
1011 * workaround is to modify the vendor and product strings read from such
1012 * device with proper values (as reported by 'usb info').
1014 * Vendor and product length limits are taken from the definition of
1015 * block_dev_desc_t in include/part.h.
1017 static void usb_bin_fixup(struct usb_device_descriptor descriptor
,
1018 unsigned char vendor
[],
1019 unsigned char product
[]) {
1020 const unsigned char max_vendor_len
= 40;
1021 const unsigned char max_product_len
= 20;
1022 if (descriptor
.idVendor
== 0x0424 && descriptor
.idProduct
== 0x223a) {
1023 strncpy((char *)vendor
, "SMSC", max_vendor_len
);
1024 strncpy((char *)product
, "Flash Media Cntrller",
1028 #endif /* CONFIG_USB_BIN_FIXUP */
1030 unsigned long usb_stor_read(int device
, lbaint_t blknr
,
1031 lbaint_t blkcnt
, void *buffer
)
1033 lbaint_t start
, blks
;
1035 unsigned short smallblks
;
1036 struct usb_device
*dev
;
1039 ccb
*srb
= &usb_ccb
;
1046 debug("\nusb_read: dev %d\n", device
);
1047 dev
= usb_dev_desc
[device
].priv
;
1049 debug("%s: No device\n", __func__
);
1052 ss
= (struct us_data
*)dev
->privptr
;
1054 usb_disable_asynch(1); /* asynch transfer not allowed */
1055 srb
->lun
= usb_dev_desc
[device
].lun
;
1056 buf_addr
= (uintptr_t)buffer
;
1060 debug("\nusb_read: dev %d startblk " LBAF
", blccnt " LBAF
1061 " buffer %" PRIxPTR
"\n", device
, start
, blks
, buf_addr
);
1064 /* XXX need some comment here */
1066 srb
->pdata
= (unsigned char *)buf_addr
;
1067 if (blks
> USB_MAX_XFER_BLK
)
1068 smallblks
= USB_MAX_XFER_BLK
;
1070 smallblks
= (unsigned short) blks
;
1072 if (smallblks
== USB_MAX_XFER_BLK
)
1073 usb_show_progress();
1074 srb
->datalen
= usb_dev_desc
[device
].blksz
* smallblks
;
1075 srb
->pdata
= (unsigned char *)buf_addr
;
1076 if (usb_read_10(srb
, ss
, start
, smallblks
)) {
1077 debug("Read ERROR\n");
1078 usb_request_sense(srb
, ss
);
1086 buf_addr
+= srb
->datalen
;
1087 } while (blks
!= 0);
1088 ss
->flags
&= ~USB_READY
;
1090 debug("usb_read: end startblk " LBAF
1091 ", blccnt %x buffer %" PRIxPTR
"\n",
1092 start
, smallblks
, buf_addr
);
1094 usb_disable_asynch(0); /* asynch transfer allowed */
1095 if (blkcnt
>= USB_MAX_XFER_BLK
)
1100 unsigned long usb_stor_write(int device
, lbaint_t blknr
,
1101 lbaint_t blkcnt
, const void *buffer
)
1103 lbaint_t start
, blks
;
1105 unsigned short smallblks
;
1106 struct usb_device
*dev
;
1109 ccb
*srb
= &usb_ccb
;
1116 debug("\nusb_write: dev %d\n", device
);
1117 dev
= usb_dev_desc
[device
].priv
;
1120 ss
= (struct us_data
*)dev
->privptr
;
1122 usb_disable_asynch(1); /* asynch transfer not allowed */
1124 srb
->lun
= usb_dev_desc
[device
].lun
;
1125 buf_addr
= (uintptr_t)buffer
;
1129 debug("\nusb_write: dev %d startblk " LBAF
", blccnt " LBAF
1130 " buffer %" PRIxPTR
"\n", device
, start
, blks
, buf_addr
);
1133 /* If write fails retry for max retry count else
1134 * return with number of blocks written successfully.
1137 srb
->pdata
= (unsigned char *)buf_addr
;
1138 if (blks
> USB_MAX_XFER_BLK
)
1139 smallblks
= USB_MAX_XFER_BLK
;
1141 smallblks
= (unsigned short) blks
;
1143 if (smallblks
== USB_MAX_XFER_BLK
)
1144 usb_show_progress();
1145 srb
->datalen
= usb_dev_desc
[device
].blksz
* smallblks
;
1146 srb
->pdata
= (unsigned char *)buf_addr
;
1147 if (usb_write_10(srb
, ss
, start
, smallblks
)) {
1148 debug("Write ERROR\n");
1149 usb_request_sense(srb
, ss
);
1157 buf_addr
+= srb
->datalen
;
1158 } while (blks
!= 0);
1159 ss
->flags
&= ~USB_READY
;
1161 debug("usb_write: end startblk " LBAF
", blccnt %x buffer %"
1162 PRIxPTR
"\n", start
, smallblks
, buf_addr
);
1164 usb_disable_asynch(0); /* asynch transfer allowed */
1165 if (blkcnt
>= USB_MAX_XFER_BLK
)
1171 /* Probe to see if a new device is actually a Storage device */
1172 int usb_storage_probe(struct usb_device
*dev
, unsigned int ifnum
,
1175 struct usb_interface
*iface
;
1177 struct usb_endpoint_descriptor
*ep_desc
;
1178 unsigned int flags
= 0;
1183 /* let's examine the device now */
1184 iface
= &dev
->config
.if_desc
[ifnum
];
1187 /* this is the place to patch some storage devices */
1188 debug("iVendor %X iProduct %X\n", dev
->descriptor
.idVendor
,
1189 dev
->descriptor
.idProduct
);
1191 if ((dev
->descriptor
.idVendor
) == 0x066b &&
1192 (dev
->descriptor
.idProduct
) == 0x0103) {
1193 debug("patched for E-USB\n");
1194 protocol
= US_PR_CB
;
1195 subclass
= US_SC_UFI
; /* an assumption */
1199 if (dev
->descriptor
.bDeviceClass
!= 0 ||
1200 iface
->desc
.bInterfaceClass
!= USB_CLASS_MASS_STORAGE
||
1201 iface
->desc
.bInterfaceSubClass
< US_SC_MIN
||
1202 iface
->desc
.bInterfaceSubClass
> US_SC_MAX
) {
1203 debug("Not mass storage\n");
1204 /* if it's not a mass storage, we go no further */
1208 memset(ss
, 0, sizeof(struct us_data
));
1210 /* At this point, we know we've got a live one */
1211 debug("\n\nUSB Mass Storage device detected\n");
1213 /* Initialize the us_data structure with some useful info */
1217 ss
->attention_done
= 0;
1219 /* If the device has subclass and protocol, then use that. Otherwise,
1220 * take data from the specific interface.
1223 ss
->subclass
= subclass
;
1224 ss
->protocol
= protocol
;
1226 ss
->subclass
= iface
->desc
.bInterfaceSubClass
;
1227 ss
->protocol
= iface
->desc
.bInterfaceProtocol
;
1230 /* set the handler pointers based on the protocol */
1231 debug("Transport: ");
1232 switch (ss
->protocol
) {
1234 debug("Control/Bulk\n");
1235 ss
->transport
= usb_stor_CB_transport
;
1236 ss
->transport_reset
= usb_stor_CB_reset
;
1240 debug("Control/Bulk/Interrupt\n");
1241 ss
->transport
= usb_stor_CB_transport
;
1242 ss
->transport_reset
= usb_stor_CB_reset
;
1245 debug("Bulk/Bulk/Bulk\n");
1246 ss
->transport
= usb_stor_BBB_transport
;
1247 ss
->transport_reset
= usb_stor_BBB_reset
;
1250 printf("USB Storage Transport unknown / not yet implemented\n");
1256 * We are expecting a minimum of 2 endpoints - in and out (bulk).
1257 * An optional interrupt is OK (necessary for CBI protocol).
1258 * We will ignore any others.
1260 for (i
= 0; i
< iface
->desc
.bNumEndpoints
; i
++) {
1261 ep_desc
= &iface
->ep_desc
[i
];
1262 /* is it an BULK endpoint? */
1263 if ((ep_desc
->bmAttributes
&
1264 USB_ENDPOINT_XFERTYPE_MASK
) == USB_ENDPOINT_XFER_BULK
) {
1265 if (ep_desc
->bEndpointAddress
& USB_DIR_IN
)
1266 ss
->ep_in
= ep_desc
->bEndpointAddress
&
1267 USB_ENDPOINT_NUMBER_MASK
;
1270 ep_desc
->bEndpointAddress
&
1271 USB_ENDPOINT_NUMBER_MASK
;
1274 /* is it an interrupt endpoint? */
1275 if ((ep_desc
->bmAttributes
&
1276 USB_ENDPOINT_XFERTYPE_MASK
) == USB_ENDPOINT_XFER_INT
) {
1277 ss
->ep_int
= ep_desc
->bEndpointAddress
&
1278 USB_ENDPOINT_NUMBER_MASK
;
1279 ss
->irqinterval
= ep_desc
->bInterval
;
1282 debug("Endpoints In %d Out %d Int %d\n",
1283 ss
->ep_in
, ss
->ep_out
, ss
->ep_int
);
1285 /* Do some basic sanity checks, and bail if we find a problem */
1286 if (usb_set_interface(dev
, iface
->desc
.bInterfaceNumber
, 0) ||
1287 !ss
->ep_in
|| !ss
->ep_out
||
1288 (ss
->protocol
== US_PR_CBI
&& ss
->ep_int
== 0)) {
1289 debug("Problems with device\n");
1292 /* set class specific stuff */
1293 /* We only handle certain protocols. Currently, these are
1295 * The SFF8070 accepts the requests used in u-boot
1297 if (ss
->subclass
!= US_SC_UFI
&& ss
->subclass
!= US_SC_SCSI
&&
1298 ss
->subclass
!= US_SC_8070
) {
1299 printf("Sorry, protocol %d not yet supported.\n", ss
->subclass
);
1303 /* we had found an interrupt endpoint, prepare irq pipe
1304 * set up the IRQ pipe and handler
1306 ss
->irqinterval
= (ss
->irqinterval
> 0) ? ss
->irqinterval
: 255;
1307 ss
->irqpipe
= usb_rcvintpipe(ss
->pusb_dev
, ss
->ep_int
);
1308 ss
->irqmaxp
= usb_maxpacket(dev
, ss
->irqpipe
);
1309 dev
->irq_handle
= usb_stor_irq
;
1311 dev
->privptr
= (void *)ss
;
1315 int usb_stor_get_info(struct usb_device
*dev
, struct us_data
*ss
,
1316 block_dev_desc_t
*dev_desc
)
1318 unsigned char perq
, modi
;
1319 ALLOC_CACHE_ALIGN_BUFFER(u32
, cap
, 2);
1320 ALLOC_CACHE_ALIGN_BUFFER(u8
, usb_stor_buf
, 36);
1321 u32 capacity
, blksz
;
1322 ccb
*pccb
= &usb_ccb
;
1324 pccb
->pdata
= usb_stor_buf
;
1326 dev_desc
->target
= dev
->devnum
;
1327 pccb
->lun
= dev_desc
->lun
;
1328 debug(" address %d\n", dev_desc
->target
);
1330 if (usb_inquiry(pccb
, ss
)) {
1331 debug("%s: usb_inquiry() failed\n", __func__
);
1335 perq
= usb_stor_buf
[0];
1336 modi
= usb_stor_buf
[1];
1339 * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1340 * they would not respond to test_unit_ready .
1342 if (((perq
& 0x1f) == 0x1f) || ((perq
& 0x1f) == 0x0d)) {
1343 debug("%s: unknown/unsupported device\n", __func__
);
1346 if ((modi
&0x80) == 0x80) {
1347 /* drive is removable */
1348 dev_desc
->removable
= 1;
1350 memcpy(dev_desc
->vendor
, (const void *)&usb_stor_buf
[8], 8);
1351 memcpy(dev_desc
->product
, (const void *)&usb_stor_buf
[16], 16);
1352 memcpy(dev_desc
->revision
, (const void *)&usb_stor_buf
[32], 4);
1353 dev_desc
->vendor
[8] = 0;
1354 dev_desc
->product
[16] = 0;
1355 dev_desc
->revision
[4] = 0;
1356 #ifdef CONFIG_USB_BIN_FIXUP
1357 usb_bin_fixup(dev
->descriptor
, (uchar
*)dev_desc
->vendor
,
1358 (uchar
*)dev_desc
->product
);
1359 #endif /* CONFIG_USB_BIN_FIXUP */
1360 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf
[2],
1362 if (usb_test_unit_ready(pccb
, ss
)) {
1363 printf("Device NOT ready\n"
1364 " Request Sense returned %02X %02X %02X\n",
1365 pccb
->sense_buf
[2], pccb
->sense_buf
[12],
1366 pccb
->sense_buf
[13]);
1367 if (dev_desc
->removable
== 1) {
1368 dev_desc
->type
= perq
;
1373 pccb
->pdata
= (unsigned char *)cap
;
1374 memset(pccb
->pdata
, 0, 8);
1375 if (usb_read_capacity(pccb
, ss
) != 0) {
1376 printf("READ_CAP ERROR\n");
1380 ss
->flags
&= ~USB_READY
;
1381 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap
[0], cap
[1]);
1383 if (cap
[0] > (0x200000 * 10)) /* greater than 10 GByte */
1386 cap
[0] = cpu_to_be32(cap
[0]);
1387 cap
[1] = cpu_to_be32(cap
[1]);
1390 capacity
= be32_to_cpu(cap
[0]) + 1;
1391 blksz
= be32_to_cpu(cap
[1]);
1393 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity
, blksz
);
1394 dev_desc
->lba
= capacity
;
1395 dev_desc
->blksz
= blksz
;
1396 dev_desc
->log2blksz
= LOG2(dev_desc
->blksz
);
1397 dev_desc
->type
= perq
;
1398 debug(" address %d\n", dev_desc
->target
);
1399 debug("partype: %d\n", dev_desc
->part_type
);
1401 init_part(dev_desc
);
1403 debug("partype: %d\n", dev_desc
->part_type
);
1407 #ifdef CONFIG_DM_USB
1409 static int usb_mass_storage_probe(struct udevice
*dev
)
1411 struct usb_device
*udev
= dev_get_parentdata(dev
);
1414 usb_disable_asynch(1); /* asynch transfer not allowed */
1415 ret
= usb_stor_probe_device(udev
);
1416 usb_disable_asynch(0); /* asynch transfer allowed */
1421 static const struct udevice_id usb_mass_storage_ids
[] = {
1422 { .compatible
= "usb-mass-storage" },
1426 U_BOOT_DRIVER(usb_mass_storage
) = {
1427 .name
= "usb_mass_storage",
1428 .id
= UCLASS_MASS_STORAGE
,
1429 .of_match
= usb_mass_storage_ids
,
1430 .probe
= usb_mass_storage_probe
,
1433 UCLASS_DRIVER(usb_mass_storage
) = {
1434 .id
= UCLASS_MASS_STORAGE
,
1435 .name
= "usb_mass_storage",
1438 static const struct usb_device_id mass_storage_id_table
[] = {
1440 .match_flags
= USB_DEVICE_ID_MATCH_INT_CLASS
,
1441 .bInterfaceClass
= USB_CLASS_MASS_STORAGE
1443 { } /* Terminating entry */
1446 U_BOOT_USB_DEVICE(usb_mass_storage
, mass_storage_id_table
);