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  *
  13  * For BBB support (C) Copyright 2003
  14  * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
  15  *
  16  * BBB support based on /sys/dev/usb/umass.c from
  17  * FreeBSD.
  18  *
  19  * SPDX-License-Identifier:     GPL-2.0+
  20  */
  21
  22 /* Note:
  23  * Currently only the CBI transport protocoll has been implemented, and it
  24  * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
  25  * transport protocoll may work as well.
  26  */
  27 /*
  28  * New Note:
  29  * Support for USB Mass Storage Devices (BBB) has been added. It has
  30  * only been tested with USB memory sticks.
  31  */
  32
  33
  34 #include <common.h>
  35 #include <command.h>
  36 #include <inttypes.h>
  37 #include <asm/byteorder.h>
  38 #include <asm/processor.h>
  39
  40 #include <part.h>
  41 #include <usb.h>
  42
  43 #undef BBB_COMDAT_TRACE
  44 #undef BBB_XPORT_TRACE
  45
  46 #include <scsi.h>
  47 /* direction table -- this indicates the direction of the data
  48  * transfer for each command code -- a 1 indicates input
  49  */
  50 static const unsigned char us_direction[256/8] = {
  51         0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
  52         0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
  53         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
  54         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
  55 };
  56 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
  57
  58 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN)));
  59 static __u32 CBWTag;
  60
  61 #define USB_MAX_STOR_DEV 5
  62 static int usb_max_devs; /* number of highest available usb device */
  63
  64 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV];
  65
  66 struct us_data;
  67 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data);
  68 typedef int (*trans_reset)(struct us_data *data);
  69
  70 struct us_data {
  71         struct usb_device *pusb_dev;     /* this usb_device */
  72
  73         unsigned int    flags;                  /* from filter initially */
  74 #       define USB_READY        (1 << 0)
  75         unsigned char   ifnum;                  /* interface number */
  76         unsigned char   ep_in;                  /* in endpoint */
  77         unsigned char   ep_out;                 /* out ....... */
  78         unsigned char   ep_int;                 /* interrupt . */
  79         unsigned char   subclass;               /* as in overview */
  80         unsigned char   protocol;               /* .............. */
  81         unsigned char   attention_done;         /* force attn on first cmd */
  82         unsigned short  ip_data;                /* interrupt data */
  83         int             action;                 /* what to do */
  84         int             ip_wanted;              /* needed */
  85         int             *irq_handle;            /* for USB int requests */
  86         unsigned int    irqpipe;                /* pipe for release_irq */
  87         unsigned char   irqmaxp;                /* max packed for irq Pipe */
  88         unsigned char   irqinterval;            /* Intervall for IRQ Pipe */
  89         ccb             *srb;                   /* current srb */
  90         trans_reset     transport_reset;        /* reset routine */
  91         trans_cmnd      transport;              /* transport routine */
  92 };
  93
  94 #ifdef CONFIG_USB_EHCI
  95 /*
  96  * The U-Boot EHCI driver can handle any transfer length as long as there is
  97  * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are
  98  * limited to 65535 blocks.
  99  */
 100 #define USB_MAX_XFER_BLK        65535
 101 #else
 102 #define USB_MAX_XFER_BLK        20
 103 #endif
 104
 105 static struct us_data usb_stor[USB_MAX_STOR_DEV];
 106
 107
 108 #define USB_STOR_TRANSPORT_GOOD    0
 109 #define USB_STOR_TRANSPORT_FAILED -1
 110 #define USB_STOR_TRANSPORT_ERROR  -2
 111
 112 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
 113                       block_dev_desc_t *dev_desc);
 114 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
 115                       struct us_data *ss);
 116 unsigned long usb_stor_read(int device, lbaint_t blknr,
 117                             lbaint_t blkcnt, void *buffer);
 118 unsigned long usb_stor_write(int device, lbaint_t blknr,
 119                              lbaint_t blkcnt, const void *buffer);
 120 struct usb_device * usb_get_dev_index(int index);
 121 void uhci_show_temp_int_td(void);
 122
 123 #ifdef CONFIG_PARTITIONS
 124 block_dev_desc_t *usb_stor_get_dev(int index)
 125 {
 126         return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL;
 127 }
 128 #endif
 129
 130 static void usb_show_progress(void)
 131 {
 132         debug(".");
 133 }
 134
 135 /*******************************************************************************
 136  * show info on storage devices; 'usb start/init' must be invoked earlier
 137  * as we only retrieve structures populated during devices initialization
 138  */
 139 int usb_stor_info(void)
 140 {
 141         int i;
 142
 143         if (usb_max_devs > 0) {
 144                 for (i = 0; i < usb_max_devs; i++) {
 145                         printf("  Device %d: ", i);
 146                         dev_print(&usb_dev_desc[i]);
 147                 }
 148                 return 0;
 149         }
 150
 151         printf("No storage devices, perhaps not 'usb start'ed..?\n");
 152         return 1;
 153 }
 154
 155 static unsigned int usb_get_max_lun(struct us_data *us)
 156 {
 157         int len;
 158         ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
 159         len = usb_control_msg(us->pusb_dev,
 160                               usb_rcvctrlpipe(us->pusb_dev, 0),
 161                               US_BBB_GET_MAX_LUN,
 162                               USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
 163                               0, us->ifnum,
 164                               result, sizeof(char),
 165                               USB_CNTL_TIMEOUT * 5);
 166         debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result);
 167         return (len > 0) ? *result : 0;
 168 }
 169
 170 static int usb_storage_register(struct usb_device *dev, unsigned char iface)
 171 {
 172         int lun, max_lun, start = usb_max_devs;
 173         int nb_dev = 0;
 174
 175         if (!usb_storage_probe(dev, iface, &usb_stor[usb_max_devs]))
 176                 return nb_dev;
 177
 178         /*
 179          * OK, it's a storage device.  Iterate over its LUNs
 180          * and populate `usb_dev_desc'.
 181          */
 182         max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
 183         for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; lun++) {
 184                 usb_dev_desc[usb_max_devs].lun = lun;
 185                 if (usb_stor_get_info(dev, &usb_stor[start],
 186                     &usb_dev_desc[usb_max_devs]) == 1) {
 187                         nb_dev++;
 188                 }
 189         }
 190
 191         return nb_dev;
 192 }
 193
 194 /*******************************************************************************
 195  * scan the usb and reports device info
 196  * to the user if mode = 1
 197  * returns current device or -1 if no
 198  */
 199 int usb_stor_scan(int mode)
 200 {
 201         unsigned char i, iface;
 202         struct usb_device *dev;
 203
 204         if (mode == 1)
 205                 printf("       scanning usb for storage devices... ");
 206
 207         usb_disable_asynch(1); /* asynch transfer not allowed */
 208
 209         for (i = 0; i < USB_MAX_STOR_DEV; i++) {
 210                 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
 211                 usb_dev_desc[i].if_type = IF_TYPE_USB;
 212                 usb_dev_desc[i].dev = i;
 213                 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
 214                 usb_dev_desc[i].target = 0xff;
 215                 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
 216                 usb_dev_desc[i].block_read = usb_stor_read;
 217                 usb_dev_desc[i].block_write = usb_stor_write;
 218         }
 219
 220         usb_max_devs = 0;
 221         for (i = 0; i < USB_MAX_DEVICE; i++) {
 222                 dev = usb_get_dev_index(i); /* get device */
 223                 debug("i=%d\n", i);
 224                 if (dev == NULL)
 225                         break; /* no more devices available */
 226
 227                 for (iface = 0; iface < dev->config.no_of_if; iface++) {
 228                         usb_max_devs += usb_storage_register(dev, iface);
 229                 }
 230
 231                 /* if storage device */
 232                 if (usb_max_devs == USB_MAX_STOR_DEV) {
 233                         printf("max USB Storage Device reached: %d stopping\n",
 234                                 usb_max_devs);
 235                         break;
 236                 }
 237         } /* for */
 238
 239         usb_disable_asynch(0); /* asynch transfer allowed */
 240         printf("%d Storage Device(s) found\n", usb_max_devs);
 241         if (usb_max_devs > 0)
 242                 return 0;
 243         return -1;
 244 }
 245
 246 static int usb_stor_irq(struct usb_device *dev)
 247 {
 248         struct us_data *us;
 249         us = (struct us_data *)dev->privptr;
 250
 251         if (us->ip_wanted)
 252                 us->ip_wanted = 0;
 253         return 0;
 254 }
 255
 256
 257 #ifdef  DEBUG
 258
 259 static void usb_show_srb(ccb *pccb)
 260 {
 261         int i;
 262         printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
 263         for (i = 0; i < 12; i++)
 264                 printf("%02X ", pccb->cmd[i]);
 265         printf("\n");
 266 }
 267
 268 static void display_int_status(unsigned long tmp)
 269 {
 270         printf("Status: %s %s %s %s %s %s %s\n",
 271                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 272                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 273                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 274                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 275                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 276                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 277                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 278 }
 279 #endif
 280 /***********************************************************************
 281  * Data transfer routines
 282  ***********************************************************************/
 283
 284 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 285 {
 286         int max_size;
 287         int this_xfer;
 288         int result;
 289         int partial;
 290         int maxtry;
 291         int stat;
 292
 293         /* determine the maximum packet size for these transfers */
 294         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 295
 296         /* while we have data left to transfer */
 297         while (length) {
 298
 299                 /* calculate how long this will be -- maximum or a remainder */
 300                 this_xfer = length > max_size ? max_size : length;
 301                 length -= this_xfer;
 302
 303                 /* setup the retry counter */
 304                 maxtry = 10;
 305
 306                 /* set up the transfer loop */
 307                 do {
 308                         /* transfer the data */
 309                         debug("Bulk xfer %p(%d) try #%d\n",
 310                               buf, this_xfer, 11 - maxtry);
 311                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 312                                               this_xfer, &partial,
 313                                               USB_CNTL_TIMEOUT * 5);
 314                         debug("bulk_msg returned %d xferred %d/%d\n",
 315                               result, partial, this_xfer);
 316                         if (us->pusb_dev->status != 0) {
 317                                 /* if we stall, we need to clear it before
 318                                  * we go on
 319                                  */
 320 #ifdef DEBUG
 321                                 display_int_status(us->pusb_dev->status);
 322 #endif
 323                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 324                                         debug("stalled ->clearing endpoint" \
 325                                               "halt for pipe 0x%x\n", pipe);
 326                                         stat = us->pusb_dev->status;
 327                                         usb_clear_halt(us->pusb_dev, pipe);
 328                                         us->pusb_dev->status = stat;
 329                                         if (this_xfer == partial) {
 330                                                 debug("bulk transferred" \
 331                                                       "with error %lX," \
 332                                                       " but data ok\n",
 333                                                       us->pusb_dev->status);
 334                                                 return 0;
 335                                         }
 336                                         else
 337                                                 return result;
 338                                 }
 339                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 340                                         debug("Device NAKed bulk_msg\n");
 341                                         return result;
 342                                 }
 343                                 debug("bulk transferred with error");
 344                                 if (this_xfer == partial) {
 345                                         debug(" %ld, but data ok\n",
 346                                               us->pusb_dev->status);
 347                                         return 0;
 348                                 }
 349                                 /* if our try counter reaches 0, bail out */
 350                                         debug(" %ld, data %d\n",
 351                                               us->pusb_dev->status, partial);
 352                                 if (!maxtry--)
 353                                                 return result;
 354                         }
 355                         /* update to show what data was transferred */
 356                         this_xfer -= partial;
 357                         buf += partial;
 358                         /* continue until this transfer is done */
 359                 } while (this_xfer);
 360         }
 361
 362         /* if we get here, we're done and successful */
 363         return 0;
 364 }
 365
 366 static int usb_stor_BBB_reset(struct us_data *us)
 367 {
 368         int result;
 369         unsigned int pipe;
 370
 371         /*
 372          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 373          *
 374          * For Reset Recovery the host shall issue in the following order:
 375          * a) a Bulk-Only Mass Storage Reset
 376          * b) a Clear Feature HALT to the Bulk-In endpoint
 377          * c) a Clear Feature HALT to the Bulk-Out endpoint
 378          *
 379          * This is done in 3 steps.
 380          *
 381          * If the reset doesn't succeed, the device should be port reset.
 382          *
 383          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 384          */
 385         debug("BBB_reset\n");
 386         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 387                                  US_BBB_RESET,
 388                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 389                                  0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
 390
 391         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 392                 debug("RESET:stall\n");
 393                 return -1;
 394         }
 395
 396         /* long wait for reset */
 397         mdelay(150);
 398         debug("BBB_reset result %d: status %lX reset\n",
 399               result, us->pusb_dev->status);
 400         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 401         result = usb_clear_halt(us->pusb_dev, pipe);
 402         /* long wait for reset */
 403         mdelay(150);
 404         debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
 405               result, us->pusb_dev->status);
 406         /* long wait for reset */
 407         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 408         result = usb_clear_halt(us->pusb_dev, pipe);
 409         mdelay(150);
 410         debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
 411               result, us->pusb_dev->status);
 412         debug("BBB_reset done\n");
 413         return 0;
 414 }
 415
 416 /* FIXME: this reset function doesn't really reset the port, and it
 417  * should. Actually it should probably do what it's doing here, and
 418  * reset the port physically
 419  */
 420 static int usb_stor_CB_reset(struct us_data *us)
 421 {
 422         unsigned char cmd[12];
 423         int result;
 424
 425         debug("CB_reset\n");
 426         memset(cmd, 0xff, sizeof(cmd));
 427         cmd[0] = SCSI_SEND_DIAG;
 428         cmd[1] = 4;
 429         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 430                                  US_CBI_ADSC,
 431                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 432                                  0, us->ifnum, cmd, sizeof(cmd),
 433                                  USB_CNTL_TIMEOUT * 5);
 434
 435         /* long wait for reset */
 436         mdelay(1500);
 437         debug("CB_reset result %d: status %lX clearing endpoint halt\n",
 438               result, us->pusb_dev->status);
 439         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 440         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 441
 442         debug("CB_reset done\n");
 443         return 0;
 444 }
 445
 446 /*
 447  * Set up the command for a BBB device. Note that the actual SCSI
 448  * command is copied into cbw.CBWCDB.
 449  */
 450 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 451 {
 452         int result;
 453         int actlen;
 454         int dir_in;
 455         unsigned int pipe;
 456         ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1);
 457
 458         dir_in = US_DIRECTION(srb->cmd[0]);
 459
 460 #ifdef BBB_COMDAT_TRACE
 461         printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
 462                 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
 463                 srb->pdata);
 464         if (srb->cmdlen) {
 465                 for (result = 0; result < srb->cmdlen; result++)
 466                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 467                 printf("\n");
 468         }
 469 #endif
 470         /* sanity checks */
 471         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 472                 debug("usb_stor_BBB_comdat:cmdlen too large\n");
 473                 return -1;
 474         }
 475
 476         /* always OUT to the ep */
 477         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 478
 479         cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
 480         cbw->dCBWTag = cpu_to_le32(CBWTag++);
 481         cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
 482         cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
 483         cbw->bCBWLUN = srb->lun;
 484         cbw->bCDBLength = srb->cmdlen;
 485         /* copy the command data into the CBW command data buffer */
 486         /* DST SRC LEN!!! */
 487
 488         memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
 489         result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
 490                               &actlen, USB_CNTL_TIMEOUT * 5);
 491         if (result < 0)
 492                 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 493         return result;
 494 }
 495
 496 /* FIXME: we also need a CBI_command which sets up the completion
 497  * interrupt, and waits for it
 498  */
 499 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 500 {
 501         int result = 0;
 502         int dir_in, retry;
 503         unsigned int pipe;
 504         unsigned long status;
 505
 506         retry = 5;
 507         dir_in = US_DIRECTION(srb->cmd[0]);
 508
 509         if (dir_in)
 510                 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 511         else
 512                 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 513
 514         while (retry--) {
 515                 debug("CBI gets a command: Try %d\n", 5 - retry);
 516 #ifdef DEBUG
 517                 usb_show_srb(srb);
 518 #endif
 519                 /* let's send the command via the control pipe */
 520                 result = usb_control_msg(us->pusb_dev,
 521                                          usb_sndctrlpipe(us->pusb_dev , 0),
 522                                          US_CBI_ADSC,
 523                                          USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 524                                          0, us->ifnum,
 525                                          srb->cmd, srb->cmdlen,
 526                                          USB_CNTL_TIMEOUT * 5);
 527                 debug("CB_transport: control msg returned %d, status %lX\n",
 528                       result, us->pusb_dev->status);
 529                 /* check the return code for the command */
 530                 if (result < 0) {
 531                         if (us->pusb_dev->status & USB_ST_STALLED) {
 532                                 status = us->pusb_dev->status;
 533                                 debug(" stall during command found," \
 534                                       " clear pipe\n");
 535                                 usb_clear_halt(us->pusb_dev,
 536                                               usb_sndctrlpipe(us->pusb_dev, 0));
 537                                 us->pusb_dev->status = status;
 538                         }
 539                         debug(" error during command %02X" \
 540                               " Stat = %lX\n", srb->cmd[0],
 541                               us->pusb_dev->status);
 542                         return result;
 543                 }
 544                 /* transfer the data payload for this command, if one exists*/
 545
 546                 debug("CB_transport: control msg returned %d," \
 547                       " direction is %s to go 0x%lx\n", result,
 548                       dir_in ? "IN" : "OUT", srb->datalen);
 549                 if (srb->datalen) {
 550                         result = us_one_transfer(us, pipe, (char *)srb->pdata,
 551                                                  srb->datalen);
 552                         debug("CBI attempted to transfer data," \
 553                               " result is %d status %lX, len %d\n",
 554                               result, us->pusb_dev->status,
 555                                 us->pusb_dev->act_len);
 556                         if (!(us->pusb_dev->status & USB_ST_NAK_REC))
 557                                 break;
 558                 } /* if (srb->datalen) */
 559                 else
 560                         break;
 561         }
 562         /* return result */
 563
 564         return result;
 565 }
 566
 567
 568 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 569 {
 570         int timeout;
 571
 572         us->ip_wanted = 1;
 573         submit_int_msg(us->pusb_dev, us->irqpipe,
 574                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 575         timeout = 1000;
 576         while (timeout--) {
 577                 if (us->ip_wanted == 0)
 578                         break;
 579                 mdelay(10);
 580         }
 581         if (us->ip_wanted) {
 582                 printf("        Did not get interrupt on CBI\n");
 583                 us->ip_wanted = 0;
 584                 return USB_STOR_TRANSPORT_ERROR;
 585         }
 586         debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
 587               us->ip_data, us->pusb_dev->irq_act_len,
 588               us->pusb_dev->irq_status);
 589         /* UFI gives us ASC and ASCQ, like a request sense */
 590         if (us->subclass == US_SC_UFI) {
 591                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 592                     srb->cmd[0] == SCSI_INQUIRY)
 593                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 594                 else if (us->ip_data)
 595                         return USB_STOR_TRANSPORT_FAILED;
 596                 else
 597                         return USB_STOR_TRANSPORT_GOOD;
 598         }
 599         /* otherwise, we interpret the data normally */
 600         switch (us->ip_data) {
 601         case 0x0001:
 602                 return USB_STOR_TRANSPORT_GOOD;
 603         case 0x0002:
 604                 return USB_STOR_TRANSPORT_FAILED;
 605         default:
 606                 return USB_STOR_TRANSPORT_ERROR;
 607         }                       /* switch */
 608         return USB_STOR_TRANSPORT_ERROR;
 609 }
 610
 611 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 612 #define USB_TRANSPORT_NOT_READY_RETRY 10
 613
 614 /* clear a stall on an endpoint - special for BBB devices */
 615 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 616 {
 617         int result;
 618
 619         /* ENDPOINT_HALT = 0, so set value to 0 */
 620         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 621                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 622                                 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
 623         return result;
 624 }
 625
 626 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 627 {
 628         int result, retry;
 629         int dir_in;
 630         int actlen, data_actlen;
 631         unsigned int pipe, pipein, pipeout;
 632         ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1);
 633 #ifdef BBB_XPORT_TRACE
 634         unsigned char *ptr;
 635         int index;
 636 #endif
 637
 638         dir_in = US_DIRECTION(srb->cmd[0]);
 639
 640         /* COMMAND phase */
 641         debug("COMMAND phase\n");
 642         result = usb_stor_BBB_comdat(srb, us);
 643         if (result < 0) {
 644                 debug("failed to send CBW status %ld\n",
 645                       us->pusb_dev->status);
 646                 usb_stor_BBB_reset(us);
 647                 return USB_STOR_TRANSPORT_FAILED;
 648         }
 649         if (!(us->flags & USB_READY))
 650                 mdelay(5);
 651         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 652         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 653         /* DATA phase + error handling */
 654         data_actlen = 0;
 655         /* no data, go immediately to the STATUS phase */
 656         if (srb->datalen == 0)
 657                 goto st;
 658         debug("DATA phase\n");
 659         if (dir_in)
 660                 pipe = pipein;
 661         else
 662                 pipe = pipeout;
 663
 664         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
 665                               &data_actlen, USB_CNTL_TIMEOUT * 5);
 666         /* special handling of STALL in DATA phase */
 667         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 668                 debug("DATA:stall\n");
 669                 /* clear the STALL on the endpoint */
 670                 result = usb_stor_BBB_clear_endpt_stall(us,
 671                                         dir_in ? us->ep_in : us->ep_out);
 672                 if (result >= 0)
 673                         /* continue on to STATUS phase */
 674                         goto st;
 675         }
 676         if (result < 0) {
 677                 debug("usb_bulk_msg error status %ld\n",
 678                       us->pusb_dev->status);
 679                 usb_stor_BBB_reset(us);
 680                 return USB_STOR_TRANSPORT_FAILED;
 681         }
 682 #ifdef BBB_XPORT_TRACE
 683         for (index = 0; index < data_actlen; index++)
 684                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 685         printf("\n");
 686 #endif
 687         /* STATUS phase + error handling */
 688 st:
 689         retry = 0;
 690 again:
 691         debug("STATUS phase\n");
 692         result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
 693                                 &actlen, USB_CNTL_TIMEOUT*5);
 694
 695         /* special handling of STALL in STATUS phase */
 696         if ((result < 0) && (retry < 1) &&
 697             (us->pusb_dev->status & USB_ST_STALLED)) {
 698                 debug("STATUS:stall\n");
 699                 /* clear the STALL on the endpoint */
 700                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 701                 if (result >= 0 && (retry++ < 1))
 702                         /* do a retry */
 703                         goto again;
 704         }
 705         if (result < 0) {
 706                 debug("usb_bulk_msg error status %ld\n",
 707                       us->pusb_dev->status);
 708                 usb_stor_BBB_reset(us);
 709                 return USB_STOR_TRANSPORT_FAILED;
 710         }
 711 #ifdef BBB_XPORT_TRACE
 712         ptr = (unsigned char *)csw;
 713         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 714                 printf("ptr[%d] %#x ", index, ptr[index]);
 715         printf("\n");
 716 #endif
 717         /* misuse pipe to get the residue */
 718         pipe = le32_to_cpu(csw->dCSWDataResidue);
 719         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 720                 pipe = srb->datalen - data_actlen;
 721         if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
 722                 debug("!CSWSIGNATURE\n");
 723                 usb_stor_BBB_reset(us);
 724                 return USB_STOR_TRANSPORT_FAILED;
 725         } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
 726                 debug("!Tag\n");
 727                 usb_stor_BBB_reset(us);
 728                 return USB_STOR_TRANSPORT_FAILED;
 729         } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
 730                 debug(">PHASE\n");
 731                 usb_stor_BBB_reset(us);
 732                 return USB_STOR_TRANSPORT_FAILED;
 733         } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
 734                 debug("=PHASE\n");
 735                 usb_stor_BBB_reset(us);
 736                 return USB_STOR_TRANSPORT_FAILED;
 737         } else if (data_actlen > srb->datalen) {
 738                 debug("transferred %dB instead of %ldB\n",
 739                       data_actlen, srb->datalen);
 740                 return USB_STOR_TRANSPORT_FAILED;
 741         } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
 742                 debug("FAILED\n");
 743                 return USB_STOR_TRANSPORT_FAILED;
 744         }
 745
 746         return result;
 747 }
 748
 749 static int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 750 {
 751         int result, status;
 752         ccb *psrb;
 753         ccb reqsrb;
 754         int retry, notready;
 755
 756         psrb = &reqsrb;
 757         status = USB_STOR_TRANSPORT_GOOD;
 758         retry = 0;
 759         notready = 0;
 760         /* issue the command */
 761 do_retry:
 762         result = usb_stor_CB_comdat(srb, us);
 763         debug("command / Data returned %d, status %lX\n",
 764               result, us->pusb_dev->status);
 765         /* if this is an CBI Protocol, get IRQ */
 766         if (us->protocol == US_PR_CBI) {
 767                 status = usb_stor_CBI_get_status(srb, us);
 768                 /* if the status is error, report it */
 769                 if (status == USB_STOR_TRANSPORT_ERROR) {
 770                         debug(" USB CBI Command Error\n");
 771                         return status;
 772                 }
 773                 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
 774                 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
 775                 if (!us->ip_data) {
 776                         /* if the status is good, report it */
 777                         if (status == USB_STOR_TRANSPORT_GOOD) {
 778                                 debug(" USB CBI Command Good\n");
 779                                 return status;
 780                         }
 781                 }
 782         }
 783         /* do we have to issue an auto request? */
 784         /* HERE we have to check the result */
 785         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 786                 debug("ERROR %lX\n", us->pusb_dev->status);
 787                 us->transport_reset(us);
 788                 return USB_STOR_TRANSPORT_ERROR;
 789         }
 790         if ((us->protocol == US_PR_CBI) &&
 791             ((srb->cmd[0] == SCSI_REQ_SENSE) ||
 792             (srb->cmd[0] == SCSI_INQUIRY))) {
 793                 /* do not issue an autorequest after request sense */
 794                 debug("No auto request and good\n");
 795                 return USB_STOR_TRANSPORT_GOOD;
 796         }
 797         /* issue an request_sense */
 798         memset(&psrb->cmd[0], 0, 12);
 799         psrb->cmd[0] = SCSI_REQ_SENSE;
 800         psrb->cmd[1] = srb->lun << 5;
 801         psrb->cmd[4] = 18;
 802         psrb->datalen = 18;
 803         psrb->pdata = &srb->sense_buf[0];
 804         psrb->cmdlen = 12;
 805         /* issue the command */
 806         result = usb_stor_CB_comdat(psrb, us);
 807         debug("auto request returned %d\n", result);
 808         /* if this is an CBI Protocol, get IRQ */
 809         if (us->protocol == US_PR_CBI)
 810                 status = usb_stor_CBI_get_status(psrb, us);
 811
 812         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 813                 debug(" AUTO REQUEST ERROR %ld\n",
 814                       us->pusb_dev->status);
 815                 return USB_STOR_TRANSPORT_ERROR;
 816         }
 817         debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 818               srb->sense_buf[0], srb->sense_buf[2],
 819               srb->sense_buf[12], srb->sense_buf[13]);
 820         /* Check the auto request result */
 821         if ((srb->sense_buf[2] == 0) &&
 822             (srb->sense_buf[12] == 0) &&
 823             (srb->sense_buf[13] == 0)) {
 824                 /* ok, no sense */
 825                 return USB_STOR_TRANSPORT_GOOD;
 826         }
 827
 828         /* Check the auto request result */
 829         switch (srb->sense_buf[2]) {
 830         case 0x01:
 831                 /* Recovered Error */
 832                 return USB_STOR_TRANSPORT_GOOD;
 833                 break;
 834         case 0x02:
 835                 /* Not Ready */
 836                 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 837                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 838                                " 0x%02X (NOT READY)\n", srb->cmd[0],
 839                                 srb->sense_buf[0], srb->sense_buf[2],
 840                                 srb->sense_buf[12], srb->sense_buf[13]);
 841                         return USB_STOR_TRANSPORT_FAILED;
 842                 } else {
 843                         mdelay(100);
 844                         goto do_retry;
 845                 }
 846                 break;
 847         default:
 848                 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 849                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 850                                " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
 851                                 srb->sense_buf[2], srb->sense_buf[12],
 852                                 srb->sense_buf[13]);
 853                         return USB_STOR_TRANSPORT_FAILED;
 854                 } else
 855                         goto do_retry;
 856                 break;
 857         }
 858         return USB_STOR_TRANSPORT_FAILED;
 859 }
 860
 861
 862 static int usb_inquiry(ccb *srb, struct us_data *ss)
 863 {
 864         int retry, i;
 865         retry = 5;
 866         do {
 867                 memset(&srb->cmd[0], 0, 12);
 868                 srb->cmd[0] = SCSI_INQUIRY;
 869                 srb->cmd[1] = srb->lun << 5;
 870                 srb->cmd[4] = 36;
 871                 srb->datalen = 36;
 872                 srb->cmdlen = 12;
 873                 i = ss->transport(srb, ss);
 874                 debug("inquiry returns %d\n", i);
 875                 if (i == 0)
 876                         break;
 877         } while (--retry);
 878
 879         if (!retry) {
 880                 printf("error in inquiry\n");
 881                 return -1;
 882         }
 883         return 0;
 884 }
 885
 886 static int usb_request_sense(ccb *srb, struct us_data *ss)
 887 {
 888         char *ptr;
 889
 890         ptr = (char *)srb->pdata;
 891         memset(&srb->cmd[0], 0, 12);
 892         srb->cmd[0] = SCSI_REQ_SENSE;
 893         srb->cmd[1] = srb->lun << 5;
 894         srb->cmd[4] = 18;
 895         srb->datalen = 18;
 896         srb->pdata = &srb->sense_buf[0];
 897         srb->cmdlen = 12;
 898         ss->transport(srb, ss);
 899         debug("Request Sense returned %02X %02X %02X\n",
 900               srb->sense_buf[2], srb->sense_buf[12],
 901               srb->sense_buf[13]);
 902         srb->pdata = (uchar *)ptr;
 903         return 0;
 904 }
 905
 906 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
 907 {
 908         int retries = 10;
 909
 910         do {
 911                 memset(&srb->cmd[0], 0, 12);
 912                 srb->cmd[0] = SCSI_TST_U_RDY;
 913                 srb->cmd[1] = srb->lun << 5;
 914                 srb->datalen = 0;
 915                 srb->cmdlen = 12;
 916                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) {
 917                         ss->flags |= USB_READY;
 918                         return 0;
 919                 }
 920                 usb_request_sense(srb, ss);
 921                 /*
 922                  * Check the Key Code Qualifier, if it matches
 923                  * "Not Ready - medium not present"
 924                  * (the sense Key equals 0x2 and the ASC is 0x3a)
 925                  * return immediately as the medium being absent won't change
 926                  * unless there is a user action.
 927                  */
 928                 if ((srb->sense_buf[2] == 0x02) &&
 929                     (srb->sense_buf[12] == 0x3a))
 930                         return -1;
 931                 mdelay(100);
 932         } while (retries--);
 933
 934         return -1;
 935 }
 936
 937 static int usb_read_capacity(ccb *srb, struct us_data *ss)
 938 {
 939         int retry;
 940         /* XXX retries */
 941         retry = 3;
 942         do {
 943                 memset(&srb->cmd[0], 0, 12);
 944                 srb->cmd[0] = SCSI_RD_CAPAC;
 945                 srb->cmd[1] = srb->lun << 5;
 946                 srb->datalen = 8;
 947                 srb->cmdlen = 12;
 948                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
 949                         return 0;
 950         } while (retry--);
 951
 952         return -1;
 953 }
 954
 955 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
 956                        unsigned short blocks)
 957 {
 958         memset(&srb->cmd[0], 0, 12);
 959         srb->cmd[0] = SCSI_READ10;
 960         srb->cmd[1] = srb->lun << 5;
 961         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
 962         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
 963         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
 964         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
 965         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
 966         srb->cmd[8] = (unsigned char) blocks & 0xff;
 967         srb->cmdlen = 12;
 968         debug("read10: start %lx blocks %x\n", start, blocks);
 969         return ss->transport(srb, ss);
 970 }
 971
 972 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
 973                         unsigned short blocks)
 974 {
 975         memset(&srb->cmd[0], 0, 12);
 976         srb->cmd[0] = SCSI_WRITE10;
 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;
 984         srb->cmdlen = 12;
 985         debug("write10: start %lx blocks %x\n", start, blocks);
 986         return ss->transport(srb, ss);
 987 }
 988
 989
 990 #ifdef CONFIG_USB_BIN_FIXUP
 991 /*
 992  * Some USB storage devices queried for SCSI identification data respond with
 993  * binary strings, which if output to the console freeze the terminal. The
 994  * workaround is to modify the vendor and product strings read from such
 995  * device with proper values (as reported by 'usb info').
 996  *
 997  * Vendor and product length limits are taken from the definition of
 998  * block_dev_desc_t in include/part.h.
 999  */
1000 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1001                                 unsigned char vendor[],
1002                                 unsigned char product[]) {
1003         const unsigned char max_vendor_len = 40;
1004         const unsigned char max_product_len = 20;
1005         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1006                 strncpy((char *)vendor, "SMSC", max_vendor_len);
1007                 strncpy((char *)product, "Flash Media Cntrller",
1008                         max_product_len);
1009         }
1010 }
1011 #endif /* CONFIG_USB_BIN_FIXUP */
1012
1013 unsigned long usb_stor_read(int device, lbaint_t blknr,
1014                             lbaint_t blkcnt, void *buffer)
1015 {
1016         lbaint_t start, blks;
1017         uintptr_t buf_addr;
1018         unsigned short smallblks;
1019         struct usb_device *dev;
1020         struct us_data *ss;
1021         int retry, i;
1022         ccb *srb = &usb_ccb;
1023
1024         if (blkcnt == 0)
1025                 return 0;
1026
1027         device &= 0xff;
1028         /* Setup  device */
1029         debug("\nusb_read: dev %d \n", device);
1030         dev = NULL;
1031         for (i = 0; i < USB_MAX_DEVICE; i++) {
1032                 dev = usb_get_dev_index(i);
1033                 if (dev == NULL)
1034                         return 0;
1035                 if (dev->devnum == usb_dev_desc[device].target)
1036                         break;
1037         }
1038         ss = (struct us_data *)dev->privptr;
1039
1040         usb_disable_asynch(1); /* asynch transfer not allowed */
1041         srb->lun = usb_dev_desc[device].lun;
1042         buf_addr = (uintptr_t)buffer;
1043         start = blknr;
1044         blks = blkcnt;
1045
1046         debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF
1047               " buffer %" PRIxPTR "\n", device, start, blks, buf_addr);
1048
1049         do {
1050                 /* XXX need some comment here */
1051                 retry = 2;
1052                 srb->pdata = (unsigned char *)buf_addr;
1053                 if (blks > USB_MAX_XFER_BLK)
1054                         smallblks = USB_MAX_XFER_BLK;
1055                 else
1056                         smallblks = (unsigned short) blks;
1057 retry_it:
1058                 if (smallblks == USB_MAX_XFER_BLK)
1059                         usb_show_progress();
1060                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1061                 srb->pdata = (unsigned char *)buf_addr;
1062                 if (usb_read_10(srb, ss, start, smallblks)) {
1063                         debug("Read ERROR\n");
1064                         usb_request_sense(srb, ss);
1065                         if (retry--)
1066                                 goto retry_it;
1067                         blkcnt -= blks;
1068                         break;
1069                 }
1070                 start += smallblks;
1071                 blks -= smallblks;
1072                 buf_addr += srb->datalen;
1073         } while (blks != 0);
1074         ss->flags &= ~USB_READY;
1075
1076         debug("usb_read: end startblk " LBAF
1077               ", blccnt %x buffer %" PRIxPTR "\n",
1078               start, smallblks, buf_addr);
1079
1080         usb_disable_asynch(0); /* asynch transfer allowed */
1081         if (blkcnt >= USB_MAX_XFER_BLK)
1082                 debug("\n");
1083         return blkcnt;
1084 }
1085
1086 unsigned long usb_stor_write(int device, lbaint_t blknr,
1087                                 lbaint_t blkcnt, const void *buffer)
1088 {
1089         lbaint_t start, blks;
1090         uintptr_t buf_addr;
1091         unsigned short smallblks;
1092         struct usb_device *dev;
1093         struct us_data *ss;
1094         int retry, i;
1095         ccb *srb = &usb_ccb;
1096
1097         if (blkcnt == 0)
1098                 return 0;
1099
1100         device &= 0xff;
1101         /* Setup  device */
1102         debug("\nusb_write: dev %d \n", device);
1103         dev = NULL;
1104         for (i = 0; i < USB_MAX_DEVICE; i++) {
1105                 dev = usb_get_dev_index(i);
1106                 if (dev == NULL)
1107                         return 0;
1108                 if (dev->devnum == usb_dev_desc[device].target)
1109                         break;
1110         }
1111         ss = (struct us_data *)dev->privptr;
1112
1113         usb_disable_asynch(1); /* asynch transfer not allowed */
1114
1115         srb->lun = usb_dev_desc[device].lun;
1116         buf_addr = (uintptr_t)buffer;
1117         start = blknr;
1118         blks = blkcnt;
1119
1120         debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF
1121               " buffer %" PRIxPTR "\n", device, start, blks, buf_addr);
1122
1123         do {
1124                 /* If write fails retry for max retry count else
1125                  * return with number of blocks written successfully.
1126                  */
1127                 retry = 2;
1128                 srb->pdata = (unsigned char *)buf_addr;
1129                 if (blks > USB_MAX_XFER_BLK)
1130                         smallblks = USB_MAX_XFER_BLK;
1131                 else
1132                         smallblks = (unsigned short) blks;
1133 retry_it:
1134                 if (smallblks == USB_MAX_XFER_BLK)
1135                         usb_show_progress();
1136                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1137                 srb->pdata = (unsigned char *)buf_addr;
1138                 if (usb_write_10(srb, ss, start, smallblks)) {
1139                         debug("Write ERROR\n");
1140                         usb_request_sense(srb, ss);
1141                         if (retry--)
1142                                 goto retry_it;
1143                         blkcnt -= blks;
1144                         break;
1145                 }
1146                 start += smallblks;
1147                 blks -= smallblks;
1148                 buf_addr += srb->datalen;
1149         } while (blks != 0);
1150         ss->flags &= ~USB_READY;
1151
1152         debug("usb_write: end startblk " LBAF ", blccnt %x buffer %"
1153               PRIxPTR "\n", start, smallblks, buf_addr);
1154
1155         usb_disable_asynch(0); /* asynch transfer allowed */
1156         if (blkcnt >= USB_MAX_XFER_BLK)
1157                 debug("\n");
1158         return blkcnt;
1159
1160 }
1161
1162 /* Probe to see if a new device is actually a Storage device */
1163 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1164                       struct us_data *ss)
1165 {
1166         struct usb_interface *iface;
1167         int i;
1168         struct usb_endpoint_descriptor *ep_desc;
1169         unsigned int flags = 0;
1170
1171         int protocol = 0;
1172         int subclass = 0;
1173
1174         /* let's examine the device now */
1175         iface = &dev->config.if_desc[ifnum];
1176
1177 #if 0
1178         /* this is the place to patch some storage devices */
1179         debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1180                         dev->descriptor.idProduct);
1181
1182         if ((dev->descriptor.idVendor) == 0x066b &&
1183             (dev->descriptor.idProduct) == 0x0103) {
1184                 debug("patched for E-USB\n");
1185                 protocol = US_PR_CB;
1186                 subclass = US_SC_UFI;       /* an assumption */
1187         }
1188 #endif
1189
1190         if (dev->descriptor.bDeviceClass != 0 ||
1191                         iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1192                         iface->desc.bInterfaceSubClass < US_SC_MIN ||
1193                         iface->desc.bInterfaceSubClass > US_SC_MAX) {
1194                 /* if it's not a mass storage, we go no further */
1195                 return 0;
1196         }
1197
1198         memset(ss, 0, sizeof(struct us_data));
1199
1200         /* At this point, we know we've got a live one */
1201         debug("\n\nUSB Mass Storage device detected\n");
1202
1203         /* Initialize the us_data structure with some useful info */
1204         ss->flags = flags;
1205         ss->ifnum = ifnum;
1206         ss->pusb_dev = dev;
1207         ss->attention_done = 0;
1208
1209         /* If the device has subclass and protocol, then use that.  Otherwise,
1210          * take data from the specific interface.
1211          */
1212         if (subclass) {
1213                 ss->subclass = subclass;
1214                 ss->protocol = protocol;
1215         } else {
1216                 ss->subclass = iface->desc.bInterfaceSubClass;
1217                 ss->protocol = iface->desc.bInterfaceProtocol;
1218         }
1219
1220         /* set the handler pointers based on the protocol */
1221         debug("Transport: ");
1222         switch (ss->protocol) {
1223         case US_PR_CB:
1224                 debug("Control/Bulk\n");
1225                 ss->transport = usb_stor_CB_transport;
1226                 ss->transport_reset = usb_stor_CB_reset;
1227                 break;
1228
1229         case US_PR_CBI:
1230                 debug("Control/Bulk/Interrupt\n");
1231                 ss->transport = usb_stor_CB_transport;
1232                 ss->transport_reset = usb_stor_CB_reset;
1233                 break;
1234         case US_PR_BULK:
1235                 debug("Bulk/Bulk/Bulk\n");
1236                 ss->transport = usb_stor_BBB_transport;
1237                 ss->transport_reset = usb_stor_BBB_reset;
1238                 break;
1239         default:
1240                 printf("USB Storage Transport unknown / not yet implemented\n");
1241                 return 0;
1242                 break;
1243         }
1244
1245         /*
1246          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1247          * An optional interrupt is OK (necessary for CBI protocol).
1248          * We will ignore any others.
1249          */
1250         for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1251                 ep_desc = &iface->ep_desc[i];
1252                 /* is it an BULK endpoint? */
1253                 if ((ep_desc->bmAttributes &
1254                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1255                         if (ep_desc->bEndpointAddress & USB_DIR_IN)
1256                                 ss->ep_in = ep_desc->bEndpointAddress &
1257                                                 USB_ENDPOINT_NUMBER_MASK;
1258                         else
1259                                 ss->ep_out =
1260                                         ep_desc->bEndpointAddress &
1261                                         USB_ENDPOINT_NUMBER_MASK;
1262                 }
1263
1264                 /* is it an interrupt endpoint? */
1265                 if ((ep_desc->bmAttributes &
1266                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1267                         ss->ep_int = ep_desc->bEndpointAddress &
1268                                                 USB_ENDPOINT_NUMBER_MASK;
1269                         ss->irqinterval = ep_desc->bInterval;
1270                 }
1271         }
1272         debug("Endpoints In %d Out %d Int %d\n",
1273               ss->ep_in, ss->ep_out, ss->ep_int);
1274
1275         /* Do some basic sanity checks, and bail if we find a problem */
1276         if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1277             !ss->ep_in || !ss->ep_out ||
1278             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1279                 debug("Problems with device\n");
1280                 return 0;
1281         }
1282         /* set class specific stuff */
1283         /* We only handle certain protocols.  Currently, these are
1284          * the only ones.
1285          * The SFF8070 accepts the requests used in u-boot
1286          */
1287         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1288             ss->subclass != US_SC_8070) {
1289                 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1290                 return 0;
1291         }
1292         if (ss->ep_int) {
1293                 /* we had found an interrupt endpoint, prepare irq pipe
1294                  * set up the IRQ pipe and handler
1295                  */
1296                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1297                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1298                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1299                 dev->irq_handle = usb_stor_irq;
1300         }
1301         dev->privptr = (void *)ss;
1302         return 1;
1303 }
1304
1305 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1306                       block_dev_desc_t *dev_desc)
1307 {
1308         unsigned char perq, modi;
1309         ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2);
1310         ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36);
1311         u32 capacity, blksz;
1312         ccb *pccb = &usb_ccb;
1313
1314         pccb->pdata = usb_stor_buf;
1315
1316         dev_desc->target = dev->devnum;
1317         pccb->lun = dev_desc->lun;
1318         debug(" address %d\n", dev_desc->target);
1319
1320         if (usb_inquiry(pccb, ss))
1321                 return -1;
1322
1323         perq = usb_stor_buf[0];
1324         modi = usb_stor_buf[1];
1325
1326         /*
1327          * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1328          * they would not respond to test_unit_ready .
1329          */
1330         if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
1331                 return 0;
1332         }
1333         if ((modi&0x80) == 0x80) {
1334                 /* drive is removable */
1335                 dev_desc->removable = 1;
1336         }
1337         memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8);
1338         memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16);
1339         memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4);
1340         dev_desc->vendor[8] = 0;
1341         dev_desc->product[16] = 0;
1342         dev_desc->revision[4] = 0;
1343 #ifdef CONFIG_USB_BIN_FIXUP
1344         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1345                       (uchar *)dev_desc->product);
1346 #endif /* CONFIG_USB_BIN_FIXUP */
1347         debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1348               usb_stor_buf[3]);
1349         if (usb_test_unit_ready(pccb, ss)) {
1350                 printf("Device NOT ready\n"
1351                        "   Request Sense returned %02X %02X %02X\n",
1352                        pccb->sense_buf[2], pccb->sense_buf[12],
1353                        pccb->sense_buf[13]);
1354                 if (dev_desc->removable == 1) {
1355                         dev_desc->type = perq;
1356                         return 1;
1357                 }
1358                 return 0;
1359         }
1360         pccb->pdata = (unsigned char *)cap;
1361         memset(pccb->pdata, 0, 8);
1362         if (usb_read_capacity(pccb, ss) != 0) {
1363                 printf("READ_CAP ERROR\n");
1364                 cap[0] = 2880;
1365                 cap[1] = 0x200;
1366         }
1367         ss->flags &= ~USB_READY;
1368         debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]);
1369 #if 0
1370         if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1371                 cap[0] >>= 16;
1372
1373         cap[0] = cpu_to_be32(cap[0]);
1374         cap[1] = cpu_to_be32(cap[1]);
1375 #endif
1376
1377         capacity = be32_to_cpu(cap[0]) + 1;
1378         blksz = be32_to_cpu(cap[1]);
1379
1380         debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz);
1381         dev_desc->lba = capacity;
1382         dev_desc->blksz = blksz;
1383         dev_desc->log2blksz = LOG2(dev_desc->blksz);
1384         dev_desc->type = perq;
1385         debug(" address %d\n", dev_desc->target);
1386         debug("partype: %d\n", dev_desc->part_type);
1387
1388         init_part(dev_desc);
1389
1390         debug("partype: %d\n", dev_desc->part_type);
1391         return 1;
1392 }