common/usb_storage.c

   1 /*
   2  * Most of this source has been derived from the Linux USB
   3  * project:
   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.
   8  *
   9  *
  10  * Adapted for U-Boot:
  11  *   (C) Copyright 2001 Denis Peter, MPL AG Switzerland
  12  * Driver model conversion:
  13  *   (C) Copyright 2015 Google, Inc
  14  *
  15  * For BBB support (C) Copyright 2003
  16  * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
  17  *
  18  * BBB support based on /sys/dev/usb/umass.c from
  19  * FreeBSD.
  20  *
  21  * SPDX-License-Identifier:     GPL-2.0+
  22  */
  23
  24 /* Note:
  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.
  28  */
  29 /*
  30  * New Note:
  31  * Support for USB Mass Storage Devices (BBB) has been added. It has
  32  * only been tested with USB memory sticks.
  33  */
  34
  35
  36 #include <common.h>
  37 #include <command.h>
  38 #include <dm.h>
  39 #include <errno.h>
  40 #include <inttypes.h>
  41 #include <mapmem.h>
  42 #include <memalign.h>
  43 #include <asm/byteorder.h>
  44 #include <asm/processor.h>
  45 #include <dm/device-internal.h>
  46 #include <dm/lists.h>
  47
  48 #include <part.h>
  49 #include <usb.h>
  50
  51 #undef BBB_COMDAT_TRACE
  52 #undef BBB_XPORT_TRACE
  53
  54 #include <scsi.h>
  55 /* direction table -- this indicates the direction of the data
  56  * transfer for each command code -- a 1 indicates input
  57  */
  58 static const unsigned char us_direction[256/8] = {
  59         0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
  60         0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
  61         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
  62         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
  63 };
  64 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
  65
  66 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN)));
  67 static __u32 CBWTag;
  68
  69 static int usb_max_devs; /* number of highest available usb device */
  70
  71 #ifndef CONFIG_BLK
  72 static struct blk_desc usb_dev_desc[USB_MAX_STOR_DEV];
  73 #endif
  74
  75 struct us_data;
  76 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data);
  77 typedef int (*trans_reset)(struct us_data *data);
  78
  79 struct us_data {
  80         struct usb_device *pusb_dev;     /* this usb_device */
  81
  82         unsigned int    flags;                  /* from filter initially */
  83 #       define USB_READY        (1 << 0)
  84         unsigned char   ifnum;                  /* interface number */
  85         unsigned char   ep_in;                  /* in endpoint */
  86         unsigned char   ep_out;                 /* out ....... */
  87         unsigned char   ep_int;                 /* interrupt . */
  88         unsigned char   subclass;               /* as in overview */
  89         unsigned char   protocol;               /* .............. */
  90         unsigned char   attention_done;         /* force attn on first cmd */
  91         unsigned short  ip_data;                /* interrupt data */
  92         int             action;                 /* what to do */
  93         int             ip_wanted;              /* needed */
  94         int             *irq_handle;            /* for USB int requests */
  95         unsigned int    irqpipe;                /* pipe for release_irq */
  96         unsigned char   irqmaxp;                /* max packed for irq Pipe */
  97         unsigned char   irqinterval;            /* Intervall for IRQ Pipe */
  98         ccb             *srb;                   /* current srb */
  99         trans_reset     transport_reset;        /* reset routine */
 100         trans_cmnd      transport;              /* transport routine */
 101 };
 102
 103 #ifdef CONFIG_USB_EHCI
 104 /*
 105  * The U-Boot EHCI driver can handle any transfer length as long as there is
 106  * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are
 107  * limited to 65535 blocks.
 108  */
 109 #define USB_MAX_XFER_BLK        65535
 110 #else
 111 #define USB_MAX_XFER_BLK        20
 112 #endif
 113
 114 #ifndef CONFIG_BLK
 115 static struct us_data usb_stor[USB_MAX_STOR_DEV];
 116 #endif
 117
 118 #define USB_STOR_TRANSPORT_GOOD    0
 119 #define USB_STOR_TRANSPORT_FAILED -1
 120 #define USB_STOR_TRANSPORT_ERROR  -2
 121
 122 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
 123                       struct blk_desc *dev_desc);
 124 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
 125                       struct us_data *ss);
 126 #ifdef CONFIG_BLK
 127 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr,
 128                                    lbaint_t blkcnt, void *buffer);
 129 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr,
 130                                     lbaint_t blkcnt, const void *buffer);
 131 #else
 132 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
 133                                    lbaint_t blkcnt, void *buffer);
 134 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr,
 135                                     lbaint_t blkcnt, const void *buffer);
 136 #endif
 137 void uhci_show_temp_int_td(void);
 138
 139 #ifdef CONFIG_PARTITIONS
 140 struct blk_desc *usb_stor_get_dev(int index)
 141 {
 142 #ifdef CONFIG_BLK
 143         struct udevice *dev;
 144         int ret;
 145
 146         ret = blk_get_device(IF_TYPE_USB, index, &dev);
 147         if (ret)
 148                 return NULL;
 149         return dev_get_uclass_platdata(dev);
 150 #else
 151         return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL;
 152 #endif
 153 }
 154 #endif
 155
 156 static void usb_show_progress(void)
 157 {
 158         debug(".");
 159 }
 160
 161 /*******************************************************************************
 162  * show info on storage devices; 'usb start/init' must be invoked earlier
 163  * as we only retrieve structures populated during devices initialization
 164  */
 165 int usb_stor_info(void)
 166 {
 167         int count = 0;
 168 #ifdef CONFIG_BLK
 169         struct udevice *dev;
 170
 171         for (blk_first_device(IF_TYPE_USB, &dev);
 172              dev;
 173              blk_next_device(&dev)) {
 174                 struct blk_desc *desc = dev_get_uclass_platdata(dev);
 175
 176                 printf("  Device %d: ", desc->devnum);
 177                 dev_print(desc);
 178                 count++;
 179         }
 180 #else
 181         int i;
 182
 183         if (usb_max_devs > 0) {
 184                 for (i = 0; i < usb_max_devs; i++) {
 185                         printf("  Device %d: ", i);
 186                         dev_print(&usb_dev_desc[i]);
 187                 }
 188                 return 0;
 189         }
 190 #endif
 191         if (!count) {
 192                 printf("No storage devices, perhaps not 'usb start'ed..?\n");
 193                 return 1;
 194         }
 195
 196         return 0;
 197 }
 198
 199 static unsigned int usb_get_max_lun(struct us_data *us)
 200 {
 201         int len;
 202         ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
 203         len = usb_control_msg(us->pusb_dev,
 204                               usb_rcvctrlpipe(us->pusb_dev, 0),
 205                               US_BBB_GET_MAX_LUN,
 206                               USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
 207                               0, us->ifnum,
 208                               result, sizeof(char),
 209                               USB_CNTL_TIMEOUT * 5);
 210         debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result);
 211         return (len > 0) ? *result : 0;
 212 }
 213
 214 static int usb_stor_probe_device(struct usb_device *udev)
 215 {
 216         int lun, max_lun;
 217
 218 #ifdef CONFIG_BLK
 219         struct us_data *data;
 220         char dev_name[30], *str;
 221         int ret;
 222 #else
 223         int start;
 224
 225         if (udev == NULL)
 226                 return -ENOENT; /* no more devices available */
 227 #endif
 228
 229         debug("\n\nProbing for storage\n");
 230 #ifdef CONFIG_BLK
 231         /*
 232          * We store the us_data in the mass storage device's platdata. It
 233          * is shared by all LUNs (block devices) attached to this mass storage
 234          * device.
 235          */
 236         data = dev_get_platdata(udev->dev);
 237         if (!usb_storage_probe(udev, 0, data))
 238                 return 0;
 239         max_lun = usb_get_max_lun(data);
 240         for (lun = 0; lun <= max_lun; lun++) {
 241                 struct blk_desc *blkdev;
 242                 struct udevice *dev;
 243
 244                 snprintf(dev_name, sizeof(dev_name), "%s.lun%d",
 245                          udev->dev->name, lun);
 246                 str = strdup(dev_name);
 247                 if (!str)
 248                         return -ENOMEM;
 249                 ret = blk_create_device(udev->dev, "usb_storage_blk", str,
 250                                 IF_TYPE_USB, usb_max_devs, 512, 0, &dev);
 251                 if (ret) {
 252                         debug("Cannot bind driver\n");
 253                         return ret;
 254                 }
 255
 256                 blkdev = dev_get_uclass_platdata(dev);
 257                 blkdev->target = 0xff;
 258                 blkdev->lun = lun;
 259
 260                 ret = usb_stor_get_info(udev, data, blkdev);
 261                 if (ret == 1)
 262                         ret = blk_prepare_device(dev);
 263                 if (!ret) {
 264                         usb_max_devs++;
 265                         debug("%s: Found device %p\n", __func__, udev);
 266                 } else {
 267                         debug("usb_stor_get_info: Invalid device\n");
 268                         ret = device_unbind(dev);
 269                         if (ret)
 270                                 return ret;
 271                 }
 272         }
 273 #else
 274         /* We don't have space to even probe if we hit the maximum */
 275         if (usb_max_devs == USB_MAX_STOR_DEV) {
 276                 printf("max USB Storage Device reached: %d stopping\n",
 277                        usb_max_devs);
 278                 return -ENOSPC;
 279         }
 280
 281         if (!usb_storage_probe(udev, 0, &usb_stor[usb_max_devs]))
 282                 return 0;
 283
 284         /*
 285          * OK, it's a storage device.  Iterate over its LUNs and populate
 286          * usb_dev_desc'
 287          */
 288         start = usb_max_devs;
 289
 290         max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
 291         for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
 292              lun++) {
 293                 struct blk_desc *blkdev;
 294
 295                 blkdev = &usb_dev_desc[usb_max_devs];
 296                 memset(blkdev, '\0', sizeof(struct blk_desc));
 297                 blkdev->if_type = IF_TYPE_USB;
 298                 blkdev->devnum = usb_max_devs;
 299                 blkdev->part_type = PART_TYPE_UNKNOWN;
 300                 blkdev->target = 0xff;
 301                 blkdev->type = DEV_TYPE_UNKNOWN;
 302                 blkdev->block_read = usb_stor_read;
 303                 blkdev->block_write = usb_stor_write;
 304                 blkdev->lun = lun;
 305                 blkdev->priv = udev;
 306
 307                 if (usb_stor_get_info(udev, &usb_stor[start],
 308                                       &usb_dev_desc[usb_max_devs]) == 1) {
 309                         debug("partype: %d\n", blkdev->part_type);
 310                         part_init(blkdev);
 311                         debug("partype: %d\n", blkdev->part_type);
 312                         usb_max_devs++;
 313                         debug("%s: Found device %p\n", __func__, udev);
 314                 }
 315         }
 316 #endif
 317
 318         return 0;
 319 }
 320
 321 void usb_stor_reset(void)
 322 {
 323         usb_max_devs = 0;
 324 }
 325
 326 #ifndef CONFIG_DM_USB
 327 /*******************************************************************************
 328  * scan the usb and reports device info
 329  * to the user if mode = 1
 330  * returns current device or -1 if no
 331  */
 332 int usb_stor_scan(int mode)
 333 {
 334         unsigned char i;
 335
 336         if (mode == 1)
 337                 printf("       scanning usb for storage devices... ");
 338
 339         usb_disable_asynch(1); /* asynch transfer not allowed */
 340
 341         usb_stor_reset();
 342         for (i = 0; i < USB_MAX_DEVICE; i++) {
 343                 struct usb_device *dev;
 344
 345                 dev = usb_get_dev_index(i); /* get device */
 346                 debug("i=%d\n", i);
 347                 if (usb_stor_probe_device(dev))
 348                         break;
 349         } /* for */
 350
 351         usb_disable_asynch(0); /* asynch transfer allowed */
 352         printf("%d Storage Device(s) found\n", usb_max_devs);
 353         if (usb_max_devs > 0)
 354                 return 0;
 355         return -1;
 356 }
 357 #endif
 358
 359 static int usb_stor_irq(struct usb_device *dev)
 360 {
 361         struct us_data *us;
 362         us = (struct us_data *)dev->privptr;
 363
 364         if (us->ip_wanted)
 365                 us->ip_wanted = 0;
 366         return 0;
 367 }
 368
 369
 370 #ifdef  DEBUG
 371
 372 static void usb_show_srb(ccb *pccb)
 373 {
 374         int i;
 375         printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
 376         for (i = 0; i < 12; i++)
 377                 printf("%02X ", pccb->cmd[i]);
 378         printf("\n");
 379 }
 380
 381 static void display_int_status(unsigned long tmp)
 382 {
 383         printf("Status: %s %s %s %s %s %s %s\n",
 384                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 385                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 386                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 387                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 388                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 389                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 390                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 391 }
 392 #endif
 393 /***********************************************************************
 394  * Data transfer routines
 395  ***********************************************************************/
 396
 397 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 398 {
 399         int max_size;
 400         int this_xfer;
 401         int result;
 402         int partial;
 403         int maxtry;
 404         int stat;
 405
 406         /* determine the maximum packet size for these transfers */
 407         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 408
 409         /* while we have data left to transfer */
 410         while (length) {
 411
 412                 /* calculate how long this will be -- maximum or a remainder */
 413                 this_xfer = length > max_size ? max_size : length;
 414                 length -= this_xfer;
 415
 416                 /* setup the retry counter */
 417                 maxtry = 10;
 418
 419                 /* set up the transfer loop */
 420                 do {
 421                         /* transfer the data */
 422                         debug("Bulk xfer 0x%lx(%d) try #%d\n",
 423                               (ulong)map_to_sysmem(buf), this_xfer,
 424                               11 - maxtry);
 425                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 426                                               this_xfer, &partial,
 427                                               USB_CNTL_TIMEOUT * 5);
 428                         debug("bulk_msg returned %d xferred %d/%d\n",
 429                               result, partial, this_xfer);
 430                         if (us->pusb_dev->status != 0) {
 431                                 /* if we stall, we need to clear it before
 432                                  * we go on
 433                                  */
 434 #ifdef DEBUG
 435                                 display_int_status(us->pusb_dev->status);
 436 #endif
 437                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 438                                         debug("stalled ->clearing endpoint" \
 439                                               "halt for pipe 0x%x\n", pipe);
 440                                         stat = us->pusb_dev->status;
 441                                         usb_clear_halt(us->pusb_dev, pipe);
 442                                         us->pusb_dev->status = stat;
 443                                         if (this_xfer == partial) {
 444                                                 debug("bulk transferred" \
 445                                                       "with error %lX," \
 446                                                       " but data ok\n",
 447                                                       us->pusb_dev->status);
 448                                                 return 0;
 449                                         }
 450                                         else
 451                                                 return result;
 452                                 }
 453                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 454                                         debug("Device NAKed bulk_msg\n");
 455                                         return result;
 456                                 }
 457                                 debug("bulk transferred with error");
 458                                 if (this_xfer == partial) {
 459                                         debug(" %ld, but data ok\n",
 460                                               us->pusb_dev->status);
 461                                         return 0;
 462                                 }
 463                                 /* if our try counter reaches 0, bail out */
 464                                         debug(" %ld, data %d\n",
 465                                               us->pusb_dev->status, partial);
 466                                 if (!maxtry--)
 467                                                 return result;
 468                         }
 469                         /* update to show what data was transferred */
 470                         this_xfer -= partial;
 471                         buf += partial;
 472                         /* continue until this transfer is done */
 473                 } while (this_xfer);
 474         }
 475
 476         /* if we get here, we're done and successful */
 477         return 0;
 478 }
 479
 480 static int usb_stor_BBB_reset(struct us_data *us)
 481 {
 482         int result;
 483         unsigned int pipe;
 484
 485         /*
 486          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 487          *
 488          * For Reset Recovery the host shall issue in the following order:
 489          * a) a Bulk-Only Mass Storage Reset
 490          * b) a Clear Feature HALT to the Bulk-In endpoint
 491          * c) a Clear Feature HALT to the Bulk-Out endpoint
 492          *
 493          * This is done in 3 steps.
 494          *
 495          * If the reset doesn't succeed, the device should be port reset.
 496          *
 497          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 498          */
 499         debug("BBB_reset\n");
 500         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 501                                  US_BBB_RESET,
 502                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 503                                  0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
 504
 505         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 506                 debug("RESET:stall\n");
 507                 return -1;
 508         }
 509
 510         /* long wait for reset */
 511         mdelay(150);
 512         debug("BBB_reset result %d: status %lX reset\n",
 513               result, us->pusb_dev->status);
 514         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 515         result = usb_clear_halt(us->pusb_dev, pipe);
 516         /* long wait for reset */
 517         mdelay(150);
 518         debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
 519               result, us->pusb_dev->status);
 520         /* long wait for reset */
 521         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 522         result = usb_clear_halt(us->pusb_dev, pipe);
 523         mdelay(150);
 524         debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
 525               result, us->pusb_dev->status);
 526         debug("BBB_reset done\n");
 527         return 0;
 528 }
 529
 530 /* FIXME: this reset function doesn't really reset the port, and it
 531  * should. Actually it should probably do what it's doing here, and
 532  * reset the port physically
 533  */
 534 static int usb_stor_CB_reset(struct us_data *us)
 535 {
 536         unsigned char cmd[12];
 537         int result;
 538
 539         debug("CB_reset\n");
 540         memset(cmd, 0xff, sizeof(cmd));
 541         cmd[0] = SCSI_SEND_DIAG;
 542         cmd[1] = 4;
 543         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 544                                  US_CBI_ADSC,
 545                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 546                                  0, us->ifnum, cmd, sizeof(cmd),
 547                                  USB_CNTL_TIMEOUT * 5);
 548
 549         /* long wait for reset */
 550         mdelay(1500);
 551         debug("CB_reset result %d: status %lX clearing endpoint halt\n",
 552               result, us->pusb_dev->status);
 553         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 554         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 555
 556         debug("CB_reset done\n");
 557         return 0;
 558 }
 559
 560 /*
 561  * Set up the command for a BBB device. Note that the actual SCSI
 562  * command is copied into cbw.CBWCDB.
 563  */
 564 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 565 {
 566         int result;
 567         int actlen;
 568         int dir_in;
 569         unsigned int pipe;
 570         ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1);
 571
 572         dir_in = US_DIRECTION(srb->cmd[0]);
 573
 574 #ifdef BBB_COMDAT_TRACE
 575         printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
 576                 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
 577                 srb->pdata);
 578         if (srb->cmdlen) {
 579                 for (result = 0; result < srb->cmdlen; result++)
 580                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 581                 printf("\n");
 582         }
 583 #endif
 584         /* sanity checks */
 585         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 586                 debug("usb_stor_BBB_comdat:cmdlen too large\n");
 587                 return -1;
 588         }
 589
 590         /* always OUT to the ep */
 591         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 592
 593         cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
 594         cbw->dCBWTag = cpu_to_le32(CBWTag++);
 595         cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
 596         cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
 597         cbw->bCBWLUN = srb->lun;
 598         cbw->bCDBLength = srb->cmdlen;
 599         /* copy the command data into the CBW command data buffer */
 600         /* DST SRC LEN!!! */
 601
 602         memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
 603         result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
 604                               &actlen, USB_CNTL_TIMEOUT * 5);
 605         if (result < 0)
 606                 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 607         return result;
 608 }
 609
 610 /* FIXME: we also need a CBI_command which sets up the completion
 611  * interrupt, and waits for it
 612  */
 613 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 614 {
 615         int result = 0;
 616         int dir_in, retry;
 617         unsigned int pipe;
 618         unsigned long status;
 619
 620         retry = 5;
 621         dir_in = US_DIRECTION(srb->cmd[0]);
 622
 623         if (dir_in)
 624                 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 625         else
 626                 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 627
 628         while (retry--) {
 629                 debug("CBI gets a command: Try %d\n", 5 - retry);
 630 #ifdef DEBUG
 631                 usb_show_srb(srb);
 632 #endif
 633                 /* let's send the command via the control pipe */
 634                 result = usb_control_msg(us->pusb_dev,
 635                                          usb_sndctrlpipe(us->pusb_dev , 0),
 636                                          US_CBI_ADSC,
 637                                          USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 638                                          0, us->ifnum,
 639                                          srb->cmd, srb->cmdlen,
 640                                          USB_CNTL_TIMEOUT * 5);
 641                 debug("CB_transport: control msg returned %d, status %lX\n",
 642                       result, us->pusb_dev->status);
 643                 /* check the return code for the command */
 644                 if (result < 0) {
 645                         if (us->pusb_dev->status & USB_ST_STALLED) {
 646                                 status = us->pusb_dev->status;
 647                                 debug(" stall during command found," \
 648                                       " clear pipe\n");
 649                                 usb_clear_halt(us->pusb_dev,
 650                                               usb_sndctrlpipe(us->pusb_dev, 0));
 651                                 us->pusb_dev->status = status;
 652                         }
 653                         debug(" error during command %02X" \
 654                               " Stat = %lX\n", srb->cmd[0],
 655                               us->pusb_dev->status);
 656                         return result;
 657                 }
 658                 /* transfer the data payload for this command, if one exists*/
 659
 660                 debug("CB_transport: control msg returned %d," \
 661                       " direction is %s to go 0x%lx\n", result,
 662                       dir_in ? "IN" : "OUT", srb->datalen);
 663                 if (srb->datalen) {
 664                         result = us_one_transfer(us, pipe, (char *)srb->pdata,
 665                                                  srb->datalen);
 666                         debug("CBI attempted to transfer data," \
 667                               " result is %d status %lX, len %d\n",
 668                               result, us->pusb_dev->status,
 669                                 us->pusb_dev->act_len);
 670                         if (!(us->pusb_dev->status & USB_ST_NAK_REC))
 671                                 break;
 672                 } /* if (srb->datalen) */
 673                 else
 674                         break;
 675         }
 676         /* return result */
 677
 678         return result;
 679 }
 680
 681
 682 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 683 {
 684         int timeout;
 685
 686         us->ip_wanted = 1;
 687         submit_int_msg(us->pusb_dev, us->irqpipe,
 688                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 689         timeout = 1000;
 690         while (timeout--) {
 691                 if (us->ip_wanted == 0)
 692                         break;
 693                 mdelay(10);
 694         }
 695         if (us->ip_wanted) {
 696                 printf("        Did not get interrupt on CBI\n");
 697                 us->ip_wanted = 0;
 698                 return USB_STOR_TRANSPORT_ERROR;
 699         }
 700         debug("Got interrupt data 0x%x, transferred %d status 0x%lX\n",
 701               us->ip_data, us->pusb_dev->irq_act_len,
 702               us->pusb_dev->irq_status);
 703         /* UFI gives us ASC and ASCQ, like a request sense */
 704         if (us->subclass == US_SC_UFI) {
 705                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 706                     srb->cmd[0] == SCSI_INQUIRY)
 707                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 708                 else if (us->ip_data)
 709                         return USB_STOR_TRANSPORT_FAILED;
 710                 else
 711                         return USB_STOR_TRANSPORT_GOOD;
 712         }
 713         /* otherwise, we interpret the data normally */
 714         switch (us->ip_data) {
 715         case 0x0001:
 716                 return USB_STOR_TRANSPORT_GOOD;
 717         case 0x0002:
 718                 return USB_STOR_TRANSPORT_FAILED;
 719         default:
 720                 return USB_STOR_TRANSPORT_ERROR;
 721         }                       /* switch */
 722         return USB_STOR_TRANSPORT_ERROR;
 723 }
 724
 725 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 726 #define USB_TRANSPORT_NOT_READY_RETRY 10
 727
 728 /* clear a stall on an endpoint - special for BBB devices */
 729 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 730 {
 731         int result;
 732
 733         /* ENDPOINT_HALT = 0, so set value to 0 */
 734         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 735                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 736                                 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
 737         return result;
 738 }
 739
 740 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 741 {
 742         int result, retry;
 743         int dir_in;
 744         int actlen, data_actlen;
 745         unsigned int pipe, pipein, pipeout;
 746         ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1);
 747 #ifdef BBB_XPORT_TRACE
 748         unsigned char *ptr;
 749         int index;
 750 #endif
 751
 752         dir_in = US_DIRECTION(srb->cmd[0]);
 753
 754         /* COMMAND phase */
 755         debug("COMMAND phase\n");
 756         result = usb_stor_BBB_comdat(srb, us);
 757         if (result < 0) {
 758                 debug("failed to send CBW status %ld\n",
 759                       us->pusb_dev->status);
 760                 usb_stor_BBB_reset(us);
 761                 return USB_STOR_TRANSPORT_FAILED;
 762         }
 763         if (!(us->flags & USB_READY))
 764                 mdelay(5);
 765         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 766         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 767         /* DATA phase + error handling */
 768         data_actlen = 0;
 769         /* no data, go immediately to the STATUS phase */
 770         if (srb->datalen == 0)
 771                 goto st;
 772         debug("DATA phase\n");
 773         if (dir_in)
 774                 pipe = pipein;
 775         else
 776                 pipe = pipeout;
 777
 778         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
 779                               &data_actlen, USB_CNTL_TIMEOUT * 5);
 780         /* special handling of STALL in DATA phase */
 781         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 782                 debug("DATA:stall\n");
 783                 /* clear the STALL on the endpoint */
 784                 result = usb_stor_BBB_clear_endpt_stall(us,
 785                                         dir_in ? us->ep_in : us->ep_out);
 786                 if (result >= 0)
 787                         /* continue on to STATUS phase */
 788                         goto st;
 789         }
 790         if (result < 0) {
 791                 debug("usb_bulk_msg error status %ld\n",
 792                       us->pusb_dev->status);
 793                 usb_stor_BBB_reset(us);
 794                 return USB_STOR_TRANSPORT_FAILED;
 795         }
 796 #ifdef BBB_XPORT_TRACE
 797         for (index = 0; index < data_actlen; index++)
 798                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 799         printf("\n");
 800 #endif
 801         /* STATUS phase + error handling */
 802 st:
 803         retry = 0;
 804 again:
 805         debug("STATUS phase\n");
 806         result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
 807                                 &actlen, USB_CNTL_TIMEOUT*5);
 808
 809         /* special handling of STALL in STATUS phase */
 810         if ((result < 0) && (retry < 1) &&
 811             (us->pusb_dev->status & USB_ST_STALLED)) {
 812                 debug("STATUS:stall\n");
 813                 /* clear the STALL on the endpoint */
 814                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 815                 if (result >= 0 && (retry++ < 1))
 816                         /* do a retry */
 817                         goto again;
 818         }
 819         if (result < 0) {
 820                 debug("usb_bulk_msg error status %ld\n",
 821                       us->pusb_dev->status);
 822                 usb_stor_BBB_reset(us);
 823                 return USB_STOR_TRANSPORT_FAILED;
 824         }
 825 #ifdef BBB_XPORT_TRACE
 826         ptr = (unsigned char *)csw;
 827         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 828                 printf("ptr[%d] %#x ", index, ptr[index]);
 829         printf("\n");
 830 #endif
 831         /* misuse pipe to get the residue */
 832         pipe = le32_to_cpu(csw->dCSWDataResidue);
 833         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 834                 pipe = srb->datalen - data_actlen;
 835         if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
 836                 debug("!CSWSIGNATURE\n");
 837                 usb_stor_BBB_reset(us);
 838                 return USB_STOR_TRANSPORT_FAILED;
 839         } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
 840                 debug("!Tag\n");
 841                 usb_stor_BBB_reset(us);
 842                 return USB_STOR_TRANSPORT_FAILED;
 843         } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
 844                 debug(">PHASE\n");
 845                 usb_stor_BBB_reset(us);
 846                 return USB_STOR_TRANSPORT_FAILED;
 847         } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
 848                 debug("=PHASE\n");
 849                 usb_stor_BBB_reset(us);
 850                 return USB_STOR_TRANSPORT_FAILED;
 851         } else if (data_actlen > srb->datalen) {
 852                 debug("transferred %dB instead of %ldB\n",
 853                       data_actlen, srb->datalen);
 854                 return USB_STOR_TRANSPORT_FAILED;
 855         } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
 856                 debug("FAILED\n");
 857                 return USB_STOR_TRANSPORT_FAILED;
 858         }
 859
 860         return result;
 861 }
 862
 863 static int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 864 {
 865         int result, status;
 866         ccb *psrb;
 867         ccb reqsrb;
 868         int retry, notready;
 869
 870         psrb = &reqsrb;
 871         status = USB_STOR_TRANSPORT_GOOD;
 872         retry = 0;
 873         notready = 0;
 874         /* issue the command */
 875 do_retry:
 876         result = usb_stor_CB_comdat(srb, us);
 877         debug("command / Data returned %d, status %lX\n",
 878               result, us->pusb_dev->status);
 879         /* if this is an CBI Protocol, get IRQ */
 880         if (us->protocol == US_PR_CBI) {
 881                 status = usb_stor_CBI_get_status(srb, us);
 882                 /* if the status is error, report it */
 883                 if (status == USB_STOR_TRANSPORT_ERROR) {
 884                         debug(" USB CBI Command Error\n");
 885                         return status;
 886                 }
 887                 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
 888                 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
 889                 if (!us->ip_data) {
 890                         /* if the status is good, report it */
 891                         if (status == USB_STOR_TRANSPORT_GOOD) {
 892                                 debug(" USB CBI Command Good\n");
 893                                 return status;
 894                         }
 895                 }
 896         }
 897         /* do we have to issue an auto request? */
 898         /* HERE we have to check the result */
 899         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 900                 debug("ERROR %lX\n", us->pusb_dev->status);
 901                 us->transport_reset(us);
 902                 return USB_STOR_TRANSPORT_ERROR;
 903         }
 904         if ((us->protocol == US_PR_CBI) &&
 905             ((srb->cmd[0] == SCSI_REQ_SENSE) ||
 906             (srb->cmd[0] == SCSI_INQUIRY))) {
 907                 /* do not issue an autorequest after request sense */
 908                 debug("No auto request and good\n");
 909                 return USB_STOR_TRANSPORT_GOOD;
 910         }
 911         /* issue an request_sense */
 912         memset(&psrb->cmd[0], 0, 12);
 913         psrb->cmd[0] = SCSI_REQ_SENSE;
 914         psrb->cmd[1] = srb->lun << 5;
 915         psrb->cmd[4] = 18;
 916         psrb->datalen = 18;
 917         psrb->pdata = &srb->sense_buf[0];
 918         psrb->cmdlen = 12;
 919         /* issue the command */
 920         result = usb_stor_CB_comdat(psrb, us);
 921         debug("auto request returned %d\n", result);
 922         /* if this is an CBI Protocol, get IRQ */
 923         if (us->protocol == US_PR_CBI)
 924                 status = usb_stor_CBI_get_status(psrb, us);
 925
 926         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 927                 debug(" AUTO REQUEST ERROR %ld\n",
 928                       us->pusb_dev->status);
 929                 return USB_STOR_TRANSPORT_ERROR;
 930         }
 931         debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 932               srb->sense_buf[0], srb->sense_buf[2],
 933               srb->sense_buf[12], srb->sense_buf[13]);
 934         /* Check the auto request result */
 935         if ((srb->sense_buf[2] == 0) &&
 936             (srb->sense_buf[12] == 0) &&
 937             (srb->sense_buf[13] == 0)) {
 938                 /* ok, no sense */
 939                 return USB_STOR_TRANSPORT_GOOD;
 940         }
 941
 942         /* Check the auto request result */
 943         switch (srb->sense_buf[2]) {
 944         case 0x01:
 945                 /* Recovered Error */
 946                 return USB_STOR_TRANSPORT_GOOD;
 947                 break;
 948         case 0x02:
 949                 /* Not Ready */
 950                 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 951                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 952                                " 0x%02X (NOT READY)\n", srb->cmd[0],
 953                                 srb->sense_buf[0], srb->sense_buf[2],
 954                                 srb->sense_buf[12], srb->sense_buf[13]);
 955                         return USB_STOR_TRANSPORT_FAILED;
 956                 } else {
 957                         mdelay(100);
 958                         goto do_retry;
 959                 }
 960                 break;
 961         default:
 962                 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 963                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 964                                " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
 965                                 srb->sense_buf[2], srb->sense_buf[12],
 966                                 srb->sense_buf[13]);
 967                         return USB_STOR_TRANSPORT_FAILED;
 968                 } else
 969                         goto do_retry;
 970                 break;
 971         }
 972         return USB_STOR_TRANSPORT_FAILED;
 973 }
 974
 975
 976 static int usb_inquiry(ccb *srb, struct us_data *ss)
 977 {
 978         int retry, i;
 979         retry = 5;
 980         do {
 981                 memset(&srb->cmd[0], 0, 12);
 982                 srb->cmd[0] = SCSI_INQUIRY;
 983                 srb->cmd[1] = srb->lun << 5;
 984                 srb->cmd[4] = 36;
 985                 srb->datalen = 36;
 986                 srb->cmdlen = 12;
 987                 i = ss->transport(srb, ss);
 988                 debug("inquiry returns %d\n", i);
 989                 if (i == 0)
 990                         break;
 991         } while (--retry);
 992
 993         if (!retry) {
 994                 printf("error in inquiry\n");
 995                 return -1;
 996         }
 997         return 0;
 998 }
 999
1000 static int usb_request_sense(ccb *srb, struct us_data *ss)
1001 {
1002         char *ptr;
1003
1004         ptr = (char *)srb->pdata;
1005         memset(&srb->cmd[0], 0, 12);
1006         srb->cmd[0] = SCSI_REQ_SENSE;
1007         srb->cmd[1] = srb->lun << 5;
1008         srb->cmd[4] = 18;
1009         srb->datalen = 18;
1010         srb->pdata = &srb->sense_buf[0];
1011         srb->cmdlen = 12;
1012         ss->transport(srb, ss);
1013         debug("Request Sense returned %02X %02X %02X\n",
1014               srb->sense_buf[2], srb->sense_buf[12],
1015               srb->sense_buf[13]);
1016         srb->pdata = (uchar *)ptr;
1017         return 0;
1018 }
1019
1020 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
1021 {
1022         int retries = 10;
1023
1024         do {
1025                 memset(&srb->cmd[0], 0, 12);
1026                 srb->cmd[0] = SCSI_TST_U_RDY;
1027                 srb->cmd[1] = srb->lun << 5;
1028                 srb->datalen = 0;
1029                 srb->cmdlen = 12;
1030                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) {
1031                         ss->flags |= USB_READY;
1032                         return 0;
1033                 }
1034                 usb_request_sense(srb, ss);
1035                 /*
1036                  * Check the Key Code Qualifier, if it matches
1037                  * "Not Ready - medium not present"
1038                  * (the sense Key equals 0x2 and the ASC is 0x3a)
1039                  * return immediately as the medium being absent won't change
1040                  * unless there is a user action.
1041                  */
1042                 if ((srb->sense_buf[2] == 0x02) &&
1043                     (srb->sense_buf[12] == 0x3a))
1044                         return -1;
1045                 mdelay(100);
1046         } while (retries--);
1047
1048         return -1;
1049 }
1050
1051 static int usb_read_capacity(ccb *srb, struct us_data *ss)
1052 {
1053         int retry;
1054         /* XXX retries */
1055         retry = 3;
1056         do {
1057                 memset(&srb->cmd[0], 0, 12);
1058                 srb->cmd[0] = SCSI_RD_CAPAC;
1059                 srb->cmd[1] = srb->lun << 5;
1060                 srb->datalen = 8;
1061                 srb->cmdlen = 12;
1062                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
1063                         return 0;
1064         } while (retry--);
1065
1066         return -1;
1067 }
1068
1069 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
1070                        unsigned short blocks)
1071 {
1072         memset(&srb->cmd[0], 0, 12);
1073         srb->cmd[0] = SCSI_READ10;
1074         srb->cmd[1] = srb->lun << 5;
1075         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1076         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1077         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1078         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1079         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1080         srb->cmd[8] = (unsigned char) blocks & 0xff;
1081         srb->cmdlen = 12;
1082         debug("read10: start %lx blocks %x\n", start, blocks);
1083         return ss->transport(srb, ss);
1084 }
1085
1086 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
1087                         unsigned short blocks)
1088 {
1089         memset(&srb->cmd[0], 0, 12);
1090         srb->cmd[0] = SCSI_WRITE10;
1091         srb->cmd[1] = srb->lun << 5;
1092         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1093         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1094         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1095         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1096         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1097         srb->cmd[8] = (unsigned char) blocks & 0xff;
1098         srb->cmdlen = 12;
1099         debug("write10: start %lx blocks %x\n", start, blocks);
1100         return ss->transport(srb, ss);
1101 }
1102
1103
1104 #ifdef CONFIG_USB_BIN_FIXUP
1105 /*
1106  * Some USB storage devices queried for SCSI identification data respond with
1107  * binary strings, which if output to the console freeze the terminal. The
1108  * workaround is to modify the vendor and product strings read from such
1109  * device with proper values (as reported by 'usb info').
1110  *
1111  * Vendor and product length limits are taken from the definition of
1112  * struct blk_desc in include/part.h.
1113  */
1114 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1115                                 unsigned char vendor[],
1116                                 unsigned char product[]) {
1117         const unsigned char max_vendor_len = 40;
1118         const unsigned char max_product_len = 20;
1119         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1120                 strncpy((char *)vendor, "SMSC", max_vendor_len);
1121                 strncpy((char *)product, "Flash Media Cntrller",
1122                         max_product_len);
1123         }
1124 }
1125 #endif /* CONFIG_USB_BIN_FIXUP */
1126
1127 #ifdef CONFIG_BLK
1128 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr,
1129                                    lbaint_t blkcnt, void *buffer)
1130 #else
1131 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
1132                                    lbaint_t blkcnt, void *buffer)
1133 #endif
1134 {
1135         lbaint_t start, blks;
1136         uintptr_t buf_addr;
1137         unsigned short smallblks;
1138         struct usb_device *udev;
1139         struct us_data *ss;
1140         int retry;
1141         ccb *srb = &usb_ccb;
1142 #ifdef CONFIG_BLK
1143         struct blk_desc *block_dev;
1144 #endif
1145
1146         if (blkcnt == 0)
1147                 return 0;
1148         /* Setup  device */
1149 #ifdef CONFIG_BLK
1150         block_dev = dev_get_uclass_platdata(dev);
1151         udev = dev_get_parent_priv(dev_get_parent(dev));
1152         debug("\nusb_read: udev %d\n", block_dev->devnum);
1153 #else
1154         debug("\nusb_read: udev %d\n", block_dev->devnum);
1155         udev = usb_dev_desc[block_dev->devnum].priv;
1156         if (!udev) {
1157                 debug("%s: No device\n", __func__);
1158                 return 0;
1159         }
1160 #endif
1161         ss = (struct us_data *)udev->privptr;
1162
1163         usb_disable_asynch(1); /* asynch transfer not allowed */
1164         srb->lun = block_dev->lun;
1165         buf_addr = (uintptr_t)buffer;
1166         start = blknr;
1167         blks = blkcnt;
1168
1169         debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF " buffer %"
1170               PRIxPTR "\n", block_dev->devnum, start, blks, buf_addr);
1171
1172         do {
1173                 /* XXX need some comment here */
1174                 retry = 2;
1175                 srb->pdata = (unsigned char *)buf_addr;
1176                 if (blks > USB_MAX_XFER_BLK)
1177                         smallblks = USB_MAX_XFER_BLK;
1178                 else
1179                         smallblks = (unsigned short) blks;
1180 retry_it:
1181                 if (smallblks == USB_MAX_XFER_BLK)
1182                         usb_show_progress();
1183                 srb->datalen = block_dev->blksz * smallblks;
1184                 srb->pdata = (unsigned char *)buf_addr;
1185                 if (usb_read_10(srb, ss, start, smallblks)) {
1186                         debug("Read ERROR\n");
1187                         usb_request_sense(srb, ss);
1188                         if (retry--)
1189                                 goto retry_it;
1190                         blkcnt -= blks;
1191                         break;
1192                 }
1193                 start += smallblks;
1194                 blks -= smallblks;
1195                 buf_addr += srb->datalen;
1196         } while (blks != 0);
1197         ss->flags &= ~USB_READY;
1198
1199         debug("usb_read: end startblk " LBAF
1200               ", blccnt %x buffer %" PRIxPTR "\n",
1201               start, smallblks, buf_addr);
1202
1203         usb_disable_asynch(0); /* asynch transfer allowed */
1204         if (blkcnt >= USB_MAX_XFER_BLK)
1205                 debug("\n");
1206         return blkcnt;
1207 }
1208
1209 #ifdef CONFIG_BLK
1210 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr,
1211                                     lbaint_t blkcnt, const void *buffer)
1212 #else
1213 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr,
1214                                     lbaint_t blkcnt, const void *buffer)
1215 #endif
1216 {
1217         lbaint_t start, blks;
1218         uintptr_t buf_addr;
1219         unsigned short smallblks;
1220         struct usb_device *udev;
1221         struct us_data *ss;
1222         int retry;
1223         ccb *srb = &usb_ccb;
1224 #ifdef CONFIG_BLK
1225         struct blk_desc *block_dev;
1226 #endif
1227
1228         if (blkcnt == 0)
1229                 return 0;
1230
1231         /* Setup  device */
1232 #ifdef CONFIG_BLK
1233         block_dev = dev_get_uclass_platdata(dev);
1234         udev = dev_get_parent_priv(dev_get_parent(dev));
1235         debug("\nusb_read: udev %d\n", block_dev->devnum);
1236 #else
1237         debug("\nusb_read: udev %d\n", block_dev->devnum);
1238         udev = usb_dev_desc[block_dev->devnum].priv;
1239         if (!udev) {
1240                 debug("%s: No device\n", __func__);
1241                 return 0;
1242         }
1243 #endif
1244         ss = (struct us_data *)udev->privptr;
1245
1246         usb_disable_asynch(1); /* asynch transfer not allowed */
1247
1248         srb->lun = block_dev->lun;
1249         buf_addr = (uintptr_t)buffer;
1250         start = blknr;
1251         blks = blkcnt;
1252
1253         debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF " buffer %"
1254               PRIxPTR "\n", block_dev->devnum, start, blks, buf_addr);
1255
1256         do {
1257                 /* If write fails retry for max retry count else
1258                  * return with number of blocks written successfully.
1259                  */
1260                 retry = 2;
1261                 srb->pdata = (unsigned char *)buf_addr;
1262                 if (blks > USB_MAX_XFER_BLK)
1263                         smallblks = USB_MAX_XFER_BLK;
1264                 else
1265                         smallblks = (unsigned short) blks;
1266 retry_it:
1267                 if (smallblks == USB_MAX_XFER_BLK)
1268                         usb_show_progress();
1269                 srb->datalen = block_dev->blksz * smallblks;
1270                 srb->pdata = (unsigned char *)buf_addr;
1271                 if (usb_write_10(srb, ss, start, smallblks)) {
1272                         debug("Write ERROR\n");
1273                         usb_request_sense(srb, ss);
1274                         if (retry--)
1275                                 goto retry_it;
1276                         blkcnt -= blks;
1277                         break;
1278                 }
1279                 start += smallblks;
1280                 blks -= smallblks;
1281                 buf_addr += srb->datalen;
1282         } while (blks != 0);
1283         ss->flags &= ~USB_READY;
1284
1285         debug("usb_write: end startblk " LBAF ", blccnt %x buffer %"
1286               PRIxPTR "\n", start, smallblks, buf_addr);
1287
1288         usb_disable_asynch(0); /* asynch transfer allowed */
1289         if (blkcnt >= USB_MAX_XFER_BLK)
1290                 debug("\n");
1291         return blkcnt;
1292
1293 }
1294
1295 /* Probe to see if a new device is actually a Storage device */
1296 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1297                       struct us_data *ss)
1298 {
1299         struct usb_interface *iface;
1300         int i;
1301         struct usb_endpoint_descriptor *ep_desc;
1302         unsigned int flags = 0;
1303
1304         /* let's examine the device now */
1305         iface = &dev->config.if_desc[ifnum];
1306
1307         if (dev->descriptor.bDeviceClass != 0 ||
1308                         iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1309                         iface->desc.bInterfaceSubClass < US_SC_MIN ||
1310                         iface->desc.bInterfaceSubClass > US_SC_MAX) {
1311                 debug("Not mass storage\n");
1312                 /* if it's not a mass storage, we go no further */
1313                 return 0;
1314         }
1315
1316         memset(ss, 0, sizeof(struct us_data));
1317
1318         /* At this point, we know we've got a live one */
1319         debug("\n\nUSB Mass Storage device detected\n");
1320
1321         /* Initialize the us_data structure with some useful info */
1322         ss->flags = flags;
1323         ss->ifnum = ifnum;
1324         ss->pusb_dev = dev;
1325         ss->attention_done = 0;
1326         ss->subclass = iface->desc.bInterfaceSubClass;
1327         ss->protocol = iface->desc.bInterfaceProtocol;
1328
1329         /* set the handler pointers based on the protocol */
1330         debug("Transport: ");
1331         switch (ss->protocol) {
1332         case US_PR_CB:
1333                 debug("Control/Bulk\n");
1334                 ss->transport = usb_stor_CB_transport;
1335                 ss->transport_reset = usb_stor_CB_reset;
1336                 break;
1337
1338         case US_PR_CBI:
1339                 debug("Control/Bulk/Interrupt\n");
1340                 ss->transport = usb_stor_CB_transport;
1341                 ss->transport_reset = usb_stor_CB_reset;
1342                 break;
1343         case US_PR_BULK:
1344                 debug("Bulk/Bulk/Bulk\n");
1345                 ss->transport = usb_stor_BBB_transport;
1346                 ss->transport_reset = usb_stor_BBB_reset;
1347                 break;
1348         default:
1349                 printf("USB Storage Transport unknown / not yet implemented\n");
1350                 return 0;
1351                 break;
1352         }
1353
1354         /*
1355          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1356          * An optional interrupt is OK (necessary for CBI protocol).
1357          * We will ignore any others.
1358          */
1359         for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1360                 ep_desc = &iface->ep_desc[i];
1361                 /* is it an BULK endpoint? */
1362                 if ((ep_desc->bmAttributes &
1363                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1364                         if (ep_desc->bEndpointAddress & USB_DIR_IN)
1365                                 ss->ep_in = ep_desc->bEndpointAddress &
1366                                                 USB_ENDPOINT_NUMBER_MASK;
1367                         else
1368                                 ss->ep_out =
1369                                         ep_desc->bEndpointAddress &
1370                                         USB_ENDPOINT_NUMBER_MASK;
1371                 }
1372
1373                 /* is it an interrupt endpoint? */
1374                 if ((ep_desc->bmAttributes &
1375                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1376                         ss->ep_int = ep_desc->bEndpointAddress &
1377                                                 USB_ENDPOINT_NUMBER_MASK;
1378                         ss->irqinterval = ep_desc->bInterval;
1379                 }
1380         }
1381         debug("Endpoints In %d Out %d Int %d\n",
1382               ss->ep_in, ss->ep_out, ss->ep_int);
1383
1384         /* Do some basic sanity checks, and bail if we find a problem */
1385         if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1386             !ss->ep_in || !ss->ep_out ||
1387             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1388                 debug("Problems with device\n");
1389                 return 0;
1390         }
1391         /* set class specific stuff */
1392         /* We only handle certain protocols.  Currently, these are
1393          * the only ones.
1394          * The SFF8070 accepts the requests used in u-boot
1395          */
1396         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1397             ss->subclass != US_SC_8070) {
1398                 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1399                 return 0;
1400         }
1401         if (ss->ep_int) {
1402                 /* we had found an interrupt endpoint, prepare irq pipe
1403                  * set up the IRQ pipe and handler
1404                  */
1405                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1406                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1407                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1408                 dev->irq_handle = usb_stor_irq;
1409         }
1410         dev->privptr = (void *)ss;
1411         return 1;
1412 }
1413
1414 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1415                       struct blk_desc *dev_desc)
1416 {
1417         unsigned char perq, modi;
1418         ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2);
1419         ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36);
1420         u32 capacity, blksz;
1421         ccb *pccb = &usb_ccb;
1422
1423         pccb->pdata = usb_stor_buf;
1424
1425         dev_desc->target = dev->devnum;
1426         pccb->lun = dev_desc->lun;
1427         debug(" address %d\n", dev_desc->target);
1428
1429         if (usb_inquiry(pccb, ss)) {
1430                 debug("%s: usb_inquiry() failed\n", __func__);
1431                 return -1;
1432         }
1433
1434         perq = usb_stor_buf[0];
1435         modi = usb_stor_buf[1];
1436
1437         /*
1438          * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1439          * they would not respond to test_unit_ready .
1440          */
1441         if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
1442                 debug("%s: unknown/unsupported device\n", __func__);
1443                 return 0;
1444         }
1445         if ((modi&0x80) == 0x80) {
1446                 /* drive is removable */
1447                 dev_desc->removable = 1;
1448         }
1449         memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8);
1450         memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16);
1451         memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4);
1452         dev_desc->vendor[8] = 0;
1453         dev_desc->product[16] = 0;
1454         dev_desc->revision[4] = 0;
1455 #ifdef CONFIG_USB_BIN_FIXUP
1456         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1457                       (uchar *)dev_desc->product);
1458 #endif /* CONFIG_USB_BIN_FIXUP */
1459         debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1460               usb_stor_buf[3]);
1461         if (usb_test_unit_ready(pccb, ss)) {
1462                 printf("Device NOT ready\n"
1463                        "   Request Sense returned %02X %02X %02X\n",
1464                        pccb->sense_buf[2], pccb->sense_buf[12],
1465                        pccb->sense_buf[13]);
1466                 if (dev_desc->removable == 1) {
1467                         dev_desc->type = perq;
1468                         return 1;
1469                 }
1470                 return 0;
1471         }
1472         pccb->pdata = (unsigned char *)cap;
1473         memset(pccb->pdata, 0, 8);
1474         if (usb_read_capacity(pccb, ss) != 0) {
1475                 printf("READ_CAP ERROR\n");
1476                 cap[0] = 2880;
1477                 cap[1] = 0x200;
1478         }
1479         ss->flags &= ~USB_READY;
1480         debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]);
1481 #if 0
1482         if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1483                 cap[0] >>= 16;
1484
1485         cap[0] = cpu_to_be32(cap[0]);
1486         cap[1] = cpu_to_be32(cap[1]);
1487 #endif
1488
1489         capacity = be32_to_cpu(cap[0]) + 1;
1490         blksz = be32_to_cpu(cap[1]);
1491
1492         debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz);
1493         dev_desc->lba = capacity;
1494         dev_desc->blksz = blksz;
1495         dev_desc->log2blksz = LOG2(dev_desc->blksz);
1496         dev_desc->type = perq;
1497         debug(" address %d\n", dev_desc->target);
1498
1499         return 1;
1500 }
1501
1502 #ifdef CONFIG_DM_USB
1503
1504 static int usb_mass_storage_probe(struct udevice *dev)
1505 {
1506         struct usb_device *udev = dev_get_parent_priv(dev);
1507         int ret;
1508
1509         usb_disable_asynch(1); /* asynch transfer not allowed */
1510         ret = usb_stor_probe_device(udev);
1511         usb_disable_asynch(0); /* asynch transfer allowed */
1512
1513         return ret;
1514 }
1515
1516 static const struct udevice_id usb_mass_storage_ids[] = {
1517         { .compatible = "usb-mass-storage" },
1518         { }
1519 };
1520
1521 U_BOOT_DRIVER(usb_mass_storage) = {
1522         .name   = "usb_mass_storage",
1523         .id     = UCLASS_MASS_STORAGE,
1524         .of_match = usb_mass_storage_ids,
1525         .probe = usb_mass_storage_probe,
1526 #ifdef CONFIG_BLK
1527         .platdata_auto_alloc_size       = sizeof(struct us_data),
1528 #endif
1529 };
1530
1531 UCLASS_DRIVER(usb_mass_storage) = {
1532         .id             = UCLASS_MASS_STORAGE,
1533         .name           = "usb_mass_storage",
1534 };
1535
1536 static const struct usb_device_id mass_storage_id_table[] = {
1537         {
1538                 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1539                 .bInterfaceClass = USB_CLASS_MASS_STORAGE
1540         },
1541         { }             /* Terminating entry */
1542 };
1543
1544 U_BOOT_USB_DEVICE(usb_mass_storage, mass_storage_id_table);
1545 #endif
1546
1547 #ifdef CONFIG_BLK
1548 static const struct blk_ops usb_storage_ops = {
1549         .read   = usb_stor_read,
1550         .write  = usb_stor_write,
1551 };
1552
1553 U_BOOT_DRIVER(usb_storage_blk) = {
1554         .name           = "usb_storage_blk",
1555         .id             = UCLASS_BLK,
1556         .ops            = &usb_storage_ops,
1557 };
1558 #endif