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 <gj@denx.de>
  15  *
  16  * BBB support based on /sys/dev/usb/umass.c from
  17  * FreeBSD.
  18  *
  19  * See file CREDITS for list of people who contributed to this
  20  * project.
  21  *
  22  * This program is free software; you can redistribute it and/or
  23  * modify it under the terms of the GNU General Public License as
  24  * published by the Free Software Foundation; either version 2 of
  25  * the License, or (at your option) any later version.
  26  *
  27  * This program is distributed in the hope that it will be useful,
  28  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  29  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  30  * GNU General Public License for more details.
  31  *
  32  * You should have received a copy of the GNU General Public License
  33  * along with this program; if not, write to the Free Software
  34  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  35  * MA 02111-1307 USA
  36  *
  37  */
  38
  39 /* Note:
  40  * Currently only the CBI transport protocoll has been implemented, and it
  41  * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
  42  * transport protocoll may work as well.
  43  */
  44 /*
  45  * New Note:
  46  * Support for USB Mass Storage Devices (BBB) has been added. It has
  47  * only been tested with USB memory sticks.
  48  */
  49
  50
  51 #include <common.h>
  52 #include <command.h>
  53 #include <asm/byteorder.h>
  54 #include <asm/processor.h>
  55
  56 #include <part.h>
  57 #include <usb.h>
  58
  59 #undef USB_STOR_DEBUG
  60 #undef BBB_COMDAT_TRACE
  61 #undef BBB_XPORT_TRACE
  62
  63 #ifdef  USB_STOR_DEBUG
  64 #define USB_STOR_PRINTF(fmt, args...)   printf(fmt , ##args)
  65 #else
  66 #define USB_STOR_PRINTF(fmt, args...)
  67 #endif
  68
  69 #include <scsi.h>
  70 /* direction table -- this indicates the direction of the data
  71  * transfer for each command code -- a 1 indicates input
  72  */
  73 unsigned char us_direction[256/8] = {
  74         0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
  75         0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
  76         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
  77         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
  78 };
  79 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
  80
  81 static unsigned char usb_stor_buf[512];
  82 static ccb usb_ccb;
  83
  84 /*
  85  * CBI style
  86  */
  87
  88 #define US_CBI_ADSC             0
  89
  90 /*
  91  * BULK only
  92  */
  93 #define US_BBB_RESET            0xff
  94 #define US_BBB_GET_MAX_LUN      0xfe
  95
  96 /* Command Block Wrapper */
  97 typedef struct {
  98         __u32           dCBWSignature;
  99 #       define CBWSIGNATURE     0x43425355
 100         __u32           dCBWTag;
 101         __u32           dCBWDataTransferLength;
 102         __u8            bCBWFlags;
 103 #       define CBWFLAGS_OUT     0x00
 104 #       define CBWFLAGS_IN      0x80
 105         __u8            bCBWLUN;
 106         __u8            bCDBLength;
 107 #       define CBWCDBLENGTH     16
 108         __u8            CBWCDB[CBWCDBLENGTH];
 109 } umass_bbb_cbw_t;
 110 #define UMASS_BBB_CBW_SIZE      31
 111 static __u32 CBWTag;
 112
 113 /* Command Status Wrapper */
 114 typedef struct {
 115         __u32           dCSWSignature;
 116 #       define CSWSIGNATURE     0x53425355
 117         __u32           dCSWTag;
 118         __u32           dCSWDataResidue;
 119         __u8            bCSWStatus;
 120 #       define CSWSTATUS_GOOD   0x0
 121 #       define CSWSTATUS_FAILED 0x1
 122 #       define CSWSTATUS_PHASE  0x2
 123 } umass_bbb_csw_t;
 124 #define UMASS_BBB_CSW_SIZE      13
 125
 126 #define USB_MAX_STOR_DEV 5
 127 static int usb_max_devs; /* number of highest available usb device */
 128
 129 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV];
 130
 131 struct us_data;
 132 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data);
 133 typedef int (*trans_reset)(struct us_data *data);
 134
 135 struct us_data {
 136         struct usb_device *pusb_dev;     /* this usb_device */
 137
 138         unsigned int    flags;                  /* from filter initially */
 139         unsigned char   ifnum;                  /* interface number */
 140         unsigned char   ep_in;                  /* in endpoint */
 141         unsigned char   ep_out;                 /* out ....... */
 142         unsigned char   ep_int;                 /* interrupt . */
 143         unsigned char   subclass;               /* as in overview */
 144         unsigned char   protocol;               /* .............. */
 145         unsigned char   attention_done;         /* force attn on first cmd */
 146         unsigned short  ip_data;                /* interrupt data */
 147         int             action;                 /* what to do */
 148         int             ip_wanted;              /* needed */
 149         int             *irq_handle;            /* for USB int requests */
 150         unsigned int    irqpipe;                /* pipe for release_irq */
 151         unsigned char   irqmaxp;                /* max packed for irq Pipe */
 152         unsigned char   irqinterval;            /* Intervall for IRQ Pipe */
 153         ccb             *srb;                   /* current srb */
 154         trans_reset     transport_reset;        /* reset routine */
 155         trans_cmnd      transport;              /* transport routine */
 156 };
 157
 158 static struct us_data usb_stor[USB_MAX_STOR_DEV];
 159
 160
 161 #define USB_STOR_TRANSPORT_GOOD    0
 162 #define USB_STOR_TRANSPORT_FAILED -1
 163 #define USB_STOR_TRANSPORT_ERROR  -2
 164
 165 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
 166                       block_dev_desc_t *dev_desc);
 167 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
 168                       struct us_data *ss);
 169 unsigned long usb_stor_read(int device, unsigned long blknr,
 170                             unsigned long blkcnt, void *buffer);
 171 struct usb_device * usb_get_dev_index(int index);
 172 void uhci_show_temp_int_td(void);
 173
 174 block_dev_desc_t *usb_stor_get_dev(int index)
 175 {
 176         return (index < USB_MAX_STOR_DEV) ? &usb_dev_desc[index] : NULL;
 177 }
 178
 179
 180 void usb_show_progress(void)
 181 {
 182         printf(".");
 183 }
 184
 185 /*******************************************************************************
 186  * show info on storage devices; 'usb start/init' must be invoked earlier
 187  * as we only retrieve structures populated during devices initialization
 188  */
 189 int usb_stor_info(void)
 190 {
 191         int i;
 192
 193         if (usb_max_devs > 0) {
 194                 for (i = 0; i < usb_max_devs; i++) {
 195                         printf("  Device %d: ", i);
 196                         dev_print(&usb_dev_desc[i]);
 197                 }
 198                 return 0;
 199         }
 200
 201         printf("No storage devices, perhaps not 'usb start'ed..?\n");
 202         return 1;
 203 }
 204
 205 /*******************************************************************************
 206  * scan the usb and reports device info
 207  * to the user if mode = 1
 208  * returns current device or -1 if no
 209  */
 210 int usb_stor_scan(int mode)
 211 {
 212         unsigned char i;
 213         struct usb_device *dev;
 214
 215         /* GJ */
 216         memset(usb_stor_buf, 0, sizeof(usb_stor_buf));
 217
 218         if (mode == 1)
 219                 printf("       scanning bus for storage devices... ");
 220
 221         usb_disable_asynch(1); /* asynch transfer not allowed */
 222
 223         for (i = 0; i < USB_MAX_STOR_DEV; i++) {
 224                 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
 225                 usb_dev_desc[i].target = 0xff;
 226                 usb_dev_desc[i].if_type = IF_TYPE_USB;
 227                 usb_dev_desc[i].dev = i;
 228                 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
 229                 usb_dev_desc[i].block_read = usb_stor_read;
 230         }
 231
 232         usb_max_devs = 0;
 233         for (i = 0; i < USB_MAX_DEVICE; i++) {
 234                 dev = usb_get_dev_index(i); /* get device */
 235                 USB_STOR_PRINTF("i=%d\n", i);
 236                 if (dev == NULL)
 237                         break; /* no more devices avaiable */
 238
 239                 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) {
 240                         /* ok, it is a storage devices
 241                          * get info and fill it in
 242                          */
 243                         if (usb_stor_get_info(dev, &usb_stor[usb_max_devs],
 244                                                 &usb_dev_desc[usb_max_devs]))
 245                                 usb_max_devs++;
 246                 }
 247                 /* if storage device */
 248                 if (usb_max_devs == USB_MAX_STOR_DEV) {
 249                         printf("max USB Storage Device reached: %d stopping\n",
 250                                 usb_max_devs);
 251                         break;
 252                 }
 253         } /* for */
 254
 255         usb_disable_asynch(0); /* asynch transfer allowed */
 256         printf("%d Storage Device(s) found\n", usb_max_devs);
 257         if (usb_max_devs > 0)
 258                 return 0;
 259         return -1;
 260 }
 261
 262 static int usb_stor_irq(struct usb_device *dev)
 263 {
 264         struct us_data *us;
 265         us = (struct us_data *)dev->privptr;
 266
 267         if (us->ip_wanted)
 268                 us->ip_wanted = 0;
 269         return 0;
 270 }
 271
 272
 273 #ifdef  USB_STOR_DEBUG
 274
 275 static void usb_show_srb(ccb *pccb)
 276 {
 277         int i;
 278         printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
 279         for (i = 0; i < 12; i++)
 280                 printf("%02X ", pccb->cmd[i]);
 281         printf("\n");
 282 }
 283
 284 static void display_int_status(unsigned long tmp)
 285 {
 286         printf("Status: %s %s %s %s %s %s %s\n",
 287                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 288                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 289                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 290                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 291                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 292                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 293                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 294 }
 295 #endif
 296 /***********************************************************************
 297  * Data transfer routines
 298  ***********************************************************************/
 299
 300 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 301 {
 302         int max_size;
 303         int this_xfer;
 304         int result;
 305         int partial;
 306         int maxtry;
 307         int stat;
 308
 309         /* determine the maximum packet size for these transfers */
 310         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 311
 312         /* while we have data left to transfer */
 313         while (length) {
 314
 315                 /* calculate how long this will be -- maximum or a remainder */
 316                 this_xfer = length > max_size ? max_size : length;
 317                 length -= this_xfer;
 318
 319                 /* setup the retry counter */
 320                 maxtry = 10;
 321
 322                 /* set up the transfer loop */
 323                 do {
 324                         /* transfer the data */
 325                         USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
 326                                   (unsigned int)buf, this_xfer, 11 - maxtry);
 327                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 328                                               this_xfer, &partial,
 329                                               USB_CNTL_TIMEOUT * 5);
 330                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
 331                                   result, partial, this_xfer);
 332                         if (us->pusb_dev->status != 0) {
 333                                 /* if we stall, we need to clear it before
 334                                  * we go on
 335                                  */
 336 #ifdef USB_STOR_DEBUG
 337                                 display_int_status(us->pusb_dev->status);
 338 #endif
 339                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 340                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
 341                                         stat = us->pusb_dev->status;
 342                                         usb_clear_halt(us->pusb_dev, pipe);
 343                                         us->pusb_dev->status = stat;
 344                                         if (this_xfer == partial) {
 345                                                 USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n", us->pusb_dev->status);
 346                                                 return 0;
 347                                         }
 348                                         else
 349                                                 return result;
 350                                 }
 351                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 352                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
 353                                         return result;
 354                                 }
 355                                 USB_STOR_PRINTF("bulk transferred with error");
 356                                 if (this_xfer == partial) {
 357                                         USB_STOR_PRINTF(" %d, but data ok\n",
 358                                                         us->pusb_dev->status);
 359                                         return 0;
 360                                 }
 361                                 /* if our try counter reaches 0, bail out */
 362                                         USB_STOR_PRINTF(" %d, data %d\n",
 363                                                 us->pusb_dev->status, partial);
 364                                 if (!maxtry--)
 365                                                 return result;
 366                         }
 367                         /* update to show what data was transferred */
 368                         this_xfer -= partial;
 369                         buf += partial;
 370                         /* continue until this transfer is done */
 371                 } while (this_xfer);
 372         }
 373
 374         /* if we get here, we're done and successful */
 375         return 0;
 376 }
 377
 378 static int usb_stor_BBB_reset(struct us_data *us)
 379 {
 380         int result;
 381         unsigned int pipe;
 382
 383         /*
 384          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 385          *
 386          * For Reset Recovery the host shall issue in the following order:
 387          * a) a Bulk-Only Mass Storage Reset
 388          * b) a Clear Feature HALT to the Bulk-In endpoint
 389          * c) a Clear Feature HALT to the Bulk-Out endpoint
 390          *
 391          * This is done in 3 steps.
 392          *
 393          * If the reset doesn't succeed, the device should be port reset.
 394          *
 395          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 396          */
 397         USB_STOR_PRINTF("BBB_reset\n");
 398         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 399                                  US_BBB_RESET,
 400                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 401                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5);
 402
 403         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 404                 USB_STOR_PRINTF("RESET:stall\n");
 405                 return -1;
 406         }
 407
 408         /* long wait for reset */
 409         wait_ms(150);
 410         USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n", result,
 411                         us->pusb_dev->status);
 412         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 413         result = usb_clear_halt(us->pusb_dev, pipe);
 414         /* long wait for reset */
 415         wait_ms(150);
 416         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n",
 417                         result, us->pusb_dev->status);
 418         /* long wait for reset */
 419         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 420         result = usb_clear_halt(us->pusb_dev, pipe);
 421         wait_ms(150);
 422         USB_STOR_PRINTF("BBB_reset result %d: status %X"
 423                         " clearing OUT endpoint\n", result,
 424                         us->pusb_dev->status);
 425         USB_STOR_PRINTF("BBB_reset done\n");
 426         return 0;
 427 }
 428
 429 /* FIXME: this reset function doesn't really reset the port, and it
 430  * should. Actually it should probably do what it's doing here, and
 431  * reset the port physically
 432  */
 433 static int usb_stor_CB_reset(struct us_data *us)
 434 {
 435         unsigned char cmd[12];
 436         int result;
 437
 438         USB_STOR_PRINTF("CB_reset\n");
 439         memset(cmd, 0xff, sizeof(cmd));
 440         cmd[0] = SCSI_SEND_DIAG;
 441         cmd[1] = 4;
 442         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 443                                  US_CBI_ADSC,
 444                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 445                                  0, us->ifnum, cmd, sizeof(cmd),
 446                                  USB_CNTL_TIMEOUT * 5);
 447
 448         /* long wait for reset */
 449         wait_ms(1500);
 450         USB_STOR_PRINTF("CB_reset result %d: status %X"
 451                         " clearing endpoint halt\n", result,
 452                         us->pusb_dev->status);
 453         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 454         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 455
 456         USB_STOR_PRINTF("CB_reset done\n");
 457         return 0;
 458 }
 459
 460 /*
 461  * Set up the command for a BBB device. Note that the actual SCSI
 462  * command is copied into cbw.CBWCDB.
 463  */
 464 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 465 {
 466         int result;
 467         int actlen;
 468         int dir_in;
 469         unsigned int pipe;
 470         umass_bbb_cbw_t cbw;
 471
 472         dir_in = US_DIRECTION(srb->cmd[0]);
 473
 474 #ifdef BBB_COMDAT_TRACE
 475         printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n",
 476                 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
 477                 srb->pdata);
 478         if (srb->cmdlen) {
 479                 for (result = 0; result < srb->cmdlen; result++)
 480                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 481                 printf("\n");
 482         }
 483 #endif
 484         /* sanity checks */
 485         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 486                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
 487                 return -1;
 488         }
 489
 490         /* always OUT to the ep */
 491         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 492
 493         cbw.dCBWSignature = cpu_to_le32(CBWSIGNATURE);
 494         cbw.dCBWTag = cpu_to_le32(CBWTag++);
 495         cbw.dCBWDataTransferLength = cpu_to_le32(srb->datalen);
 496         cbw.bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
 497         cbw.bCBWLUN = srb->lun;
 498         cbw.bCDBLength = srb->cmdlen;
 499         /* copy the command data into the CBW command data buffer */
 500         /* DST SRC LEN!!! */
 501         memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen);
 502         result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE,
 503                               &actlen, USB_CNTL_TIMEOUT * 5);
 504         if (result < 0)
 505                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 506         return result;
 507 }
 508
 509 /* FIXME: we also need a CBI_command which sets up the completion
 510  * interrupt, and waits for it
 511  */
 512 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 513 {
 514         int result = 0;
 515         int dir_in, retry;
 516         unsigned int pipe;
 517         unsigned long status;
 518
 519         retry = 5;
 520         dir_in = US_DIRECTION(srb->cmd[0]);
 521
 522         if (dir_in)
 523                 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 524         else
 525                 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 526
 527         while (retry--) {
 528                 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry);
 529 #ifdef USB_STOR_DEBUG
 530                 usb_show_srb(srb);
 531 #endif
 532                 /* let's send the command via the control pipe */
 533                 result = usb_control_msg(us->pusb_dev,
 534                                          usb_sndctrlpipe(us->pusb_dev , 0),
 535                                          US_CBI_ADSC,
 536                                          USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 537                                          0, us->ifnum,
 538                                          srb->cmd, srb->cmdlen,
 539                                          USB_CNTL_TIMEOUT * 5);
 540                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
 541                                 " status %X\n", result, us->pusb_dev->status);
 542                 /* check the return code for the command */
 543                 if (result < 0) {
 544                         if (us->pusb_dev->status & USB_ST_STALLED) {
 545                                 status = us->pusb_dev->status;
 546                                 USB_STOR_PRINTF(" stall during command found,"
 547                                                 " clear pipe\n");
 548                                 usb_clear_halt(us->pusb_dev,
 549                                               usb_sndctrlpipe(us->pusb_dev, 0));
 550                                 us->pusb_dev->status = status;
 551                         }
 552                         USB_STOR_PRINTF(" error during command %02X"
 553                                         " Stat = %X\n", srb->cmd[0],
 554                                         us->pusb_dev->status);
 555                         return result;
 556                 }
 557                 /* transfer the data payload for this command, if one exists*/
 558
 559                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
 560                                 " direction is %s to go 0x%lx\n", result,
 561                                 dir_in ? "IN" : "OUT", srb->datalen);
 562                 if (srb->datalen) {
 563                         result = us_one_transfer(us, pipe, (char *)srb->pdata,
 564                                                  srb->datalen);
 565                         USB_STOR_PRINTF("CBI attempted to transfer data,"
 566                                         " result is %d status %lX, len %d\n",
 567                                         result, us->pusb_dev->status,
 568                                         us->pusb_dev->act_len);
 569                         if (!(us->pusb_dev->status & USB_ST_NAK_REC))
 570                                 break;
 571                 } /* if (srb->datalen) */
 572                 else
 573                         break;
 574         }
 575         /* return result */
 576
 577         return result;
 578 }
 579
 580
 581 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 582 {
 583         int timeout;
 584
 585         us->ip_wanted = 1;
 586         submit_int_msg(us->pusb_dev, us->irqpipe,
 587                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 588         timeout = 1000;
 589         while (timeout--) {
 590                 if ((volatile int *) us->ip_wanted == 0)
 591                         break;
 592                 wait_ms(10);
 593         }
 594         if (us->ip_wanted) {
 595                 printf("        Did not get interrupt on CBI\n");
 596                 us->ip_wanted = 0;
 597                 return USB_STOR_TRANSPORT_ERROR;
 598         }
 599         USB_STOR_PRINTF
 600                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
 601                  us->ip_data, us->pusb_dev->irq_act_len,
 602                  us->pusb_dev->irq_status);
 603         /* UFI gives us ASC and ASCQ, like a request sense */
 604         if (us->subclass == US_SC_UFI) {
 605                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 606                     srb->cmd[0] == SCSI_INQUIRY)
 607                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 608                 else if (us->ip_data)
 609                         return USB_STOR_TRANSPORT_FAILED;
 610                 else
 611                         return USB_STOR_TRANSPORT_GOOD;
 612         }
 613         /* otherwise, we interpret the data normally */
 614         switch (us->ip_data) {
 615         case 0x0001:
 616                 return USB_STOR_TRANSPORT_GOOD;
 617         case 0x0002:
 618                 return USB_STOR_TRANSPORT_FAILED;
 619         default:
 620                 return USB_STOR_TRANSPORT_ERROR;
 621         }                       /* switch */
 622         return USB_STOR_TRANSPORT_ERROR;
 623 }
 624
 625 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 626 #define USB_TRANSPORT_NOT_READY_RETRY 10
 627
 628 /* clear a stall on an endpoint - special for BBB devices */
 629 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 630 {
 631         int result;
 632
 633         /* ENDPOINT_HALT = 0, so set value to 0 */
 634         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 635                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 636                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5);
 637         return result;
 638 }
 639
 640 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 641 {
 642         int result, retry;
 643         int dir_in;
 644         int actlen, data_actlen;
 645         unsigned int pipe, pipein, pipeout;
 646         umass_bbb_csw_t csw;
 647 #ifdef BBB_XPORT_TRACE
 648         unsigned char *ptr;
 649         int index;
 650 #endif
 651
 652         dir_in = US_DIRECTION(srb->cmd[0]);
 653
 654         /* COMMAND phase */
 655         USB_STOR_PRINTF("COMMAND phase\n");
 656         result = usb_stor_BBB_comdat(srb, us);
 657         if (result < 0) {
 658                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
 659                         us->pusb_dev->status);
 660                 usb_stor_BBB_reset(us);
 661                 return USB_STOR_TRANSPORT_FAILED;
 662         }
 663         wait_ms(5);
 664         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 665         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 666         /* DATA phase + error handling */
 667         data_actlen = 0;
 668         /* no data, go immediately to the STATUS phase */
 669         if (srb->datalen == 0)
 670                 goto st;
 671         USB_STOR_PRINTF("DATA phase\n");
 672         if (dir_in)
 673                 pipe = pipein;
 674         else
 675                 pipe = pipeout;
 676         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
 677                               &data_actlen, USB_CNTL_TIMEOUT * 5);
 678         /* special handling of STALL in DATA phase */
 679         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 680                 USB_STOR_PRINTF("DATA:stall\n");
 681                 /* clear the STALL on the endpoint */
 682                 result = usb_stor_BBB_clear_endpt_stall(us,
 683                                         dir_in ? us->ep_in : us->ep_out);
 684                 if (result >= 0)
 685                         /* continue on to STATUS phase */
 686                         goto st;
 687         }
 688         if (result < 0) {
 689                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 690                         us->pusb_dev->status);
 691                 usb_stor_BBB_reset(us);
 692                 return USB_STOR_TRANSPORT_FAILED;
 693         }
 694 #ifdef BBB_XPORT_TRACE
 695         for (index = 0; index < data_actlen; index++)
 696                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 697         printf("\n");
 698 #endif
 699         /* STATUS phase + error handling */
 700 st:
 701         retry = 0;
 702 again:
 703         USB_STOR_PRINTF("STATUS phase\n");
 704         result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE,
 705                                 &actlen, USB_CNTL_TIMEOUT*5);
 706
 707         /* special handling of STALL in STATUS phase */
 708         if ((result < 0) && (retry < 1) &&
 709             (us->pusb_dev->status & USB_ST_STALLED)) {
 710                 USB_STOR_PRINTF("STATUS:stall\n");
 711                 /* clear the STALL on the endpoint */
 712                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 713                 if (result >= 0 && (retry++ < 1))
 714                         /* do a retry */
 715                         goto again;
 716         }
 717         if (result < 0) {
 718                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 719                         us->pusb_dev->status);
 720                 usb_stor_BBB_reset(us);
 721                 return USB_STOR_TRANSPORT_FAILED;
 722         }
 723 #ifdef BBB_XPORT_TRACE
 724         ptr = (unsigned char *)&csw;
 725         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 726                 printf("ptr[%d] %#x ", index, ptr[index]);
 727         printf("\n");
 728 #endif
 729         /* misuse pipe to get the residue */
 730         pipe = le32_to_cpu(csw.dCSWDataResidue);
 731         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 732                 pipe = srb->datalen - data_actlen;
 733         if (CSWSIGNATURE != le32_to_cpu(csw.dCSWSignature)) {
 734                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
 735                 usb_stor_BBB_reset(us);
 736                 return USB_STOR_TRANSPORT_FAILED;
 737         } else if ((CBWTag - 1) != le32_to_cpu(csw.dCSWTag)) {
 738                 USB_STOR_PRINTF("!Tag\n");
 739                 usb_stor_BBB_reset(us);
 740                 return USB_STOR_TRANSPORT_FAILED;
 741         } else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
 742                 USB_STOR_PRINTF(">PHASE\n");
 743                 usb_stor_BBB_reset(us);
 744                 return USB_STOR_TRANSPORT_FAILED;
 745         } else if (csw.bCSWStatus == CSWSTATUS_PHASE) {
 746                 USB_STOR_PRINTF("=PHASE\n");
 747                 usb_stor_BBB_reset(us);
 748                 return USB_STOR_TRANSPORT_FAILED;
 749         } else if (data_actlen > srb->datalen) {
 750                 USB_STOR_PRINTF("transferred %dB instead of %dB\n",
 751                         data_actlen, srb->datalen);
 752                 return USB_STOR_TRANSPORT_FAILED;
 753         } else if (csw.bCSWStatus == CSWSTATUS_FAILED) {
 754                 USB_STOR_PRINTF("FAILED\n");
 755                 return USB_STOR_TRANSPORT_FAILED;
 756         }
 757
 758         return result;
 759 }
 760
 761 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 762 {
 763         int result, status;
 764         ccb *psrb;
 765         ccb reqsrb;
 766         int retry, notready;
 767
 768         psrb = &reqsrb;
 769         status = USB_STOR_TRANSPORT_GOOD;
 770         retry = 0;
 771         notready = 0;
 772         /* issue the command */
 773 do_retry:
 774         result = usb_stor_CB_comdat(srb, us);
 775         USB_STOR_PRINTF("command / Data returned %d, status %X\n",
 776                         result, us->pusb_dev->status);
 777         /* if this is an CBI Protocol, get IRQ */
 778         if (us->protocol == US_PR_CBI) {
 779                 status = usb_stor_CBI_get_status(srb, us);
 780                 /* if the status is error, report it */
 781                 if (status == USB_STOR_TRANSPORT_ERROR) {
 782                         USB_STOR_PRINTF(" USB CBI Command Error\n");
 783                         return status;
 784                 }
 785                 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
 786                 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
 787                 if (!us->ip_data) {
 788                         /* if the status is good, report it */
 789                         if (status == USB_STOR_TRANSPORT_GOOD) {
 790                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
 791                                 return status;
 792                         }
 793                 }
 794         }
 795         /* do we have to issue an auto request? */
 796         /* HERE we have to check the result */
 797         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 798                 USB_STOR_PRINTF("ERROR %X\n", us->pusb_dev->status);
 799                 us->transport_reset(us);
 800                 return USB_STOR_TRANSPORT_ERROR;
 801         }
 802         if ((us->protocol == US_PR_CBI) &&
 803             ((srb->cmd[0] == SCSI_REQ_SENSE) ||
 804             (srb->cmd[0] == SCSI_INQUIRY))) {
 805                 /* do not issue an autorequest after request sense */
 806                 USB_STOR_PRINTF("No auto request and good\n");
 807                 return USB_STOR_TRANSPORT_GOOD;
 808         }
 809         /* issue an request_sense */
 810         memset(&psrb->cmd[0], 0, 12);
 811         psrb->cmd[0] = SCSI_REQ_SENSE;
 812         psrb->cmd[1] = srb->lun << 5;
 813         psrb->cmd[4] = 18;
 814         psrb->datalen = 18;
 815         psrb->pdata = &srb->sense_buf[0];
 816         psrb->cmdlen = 12;
 817         /* issue the command */
 818         result = usb_stor_CB_comdat(psrb, us);
 819         USB_STOR_PRINTF("auto request returned %d\n", result);
 820         /* if this is an CBI Protocol, get IRQ */
 821         if (us->protocol == US_PR_CBI)
 822                 status = usb_stor_CBI_get_status(psrb, us);
 823
 824         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 825                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n",
 826                                 us->pusb_dev->status);
 827                 return USB_STOR_TRANSPORT_ERROR;
 828         }
 829         USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 830                         srb->sense_buf[0], srb->sense_buf[2],
 831                         srb->sense_buf[12], srb->sense_buf[13]);
 832         /* Check the auto request result */
 833         if ((srb->sense_buf[2] == 0) &&
 834             (srb->sense_buf[12] == 0) &&
 835             (srb->sense_buf[13] == 0)) {
 836                 /* ok, no sense */
 837                 return USB_STOR_TRANSPORT_GOOD;
 838         }
 839
 840         /* Check the auto request result */
 841         switch (srb->sense_buf[2]) {
 842         case 0x01:
 843                 /* Recovered Error */
 844                 return USB_STOR_TRANSPORT_GOOD;
 845                 break;
 846         case 0x02:
 847                 /* Not Ready */
 848                 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 849                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 850                                " 0x%02X (NOT READY)\n", srb->cmd[0],
 851                                 srb->sense_buf[0], srb->sense_buf[2],
 852                                 srb->sense_buf[12], srb->sense_buf[13]);
 853                         return USB_STOR_TRANSPORT_FAILED;
 854                 } else {
 855                         wait_ms(100);
 856                         goto do_retry;
 857                 }
 858                 break;
 859         default:
 860                 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 861                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 862                                " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
 863                                 srb->sense_buf[2], srb->sense_buf[12],
 864                                 srb->sense_buf[13]);
 865                         return USB_STOR_TRANSPORT_FAILED;
 866                 } else
 867                         goto do_retry;
 868                 break;
 869         }
 870         return USB_STOR_TRANSPORT_FAILED;
 871 }
 872
 873
 874 static int usb_inquiry(ccb *srb, struct us_data *ss)
 875 {
 876         int retry, i;
 877         retry = 5;
 878         do {
 879                 memset(&srb->cmd[0], 0, 12);
 880                 srb->cmd[0] = SCSI_INQUIRY;
 881                 srb->cmd[1] = srb->lun<<5;
 882                 srb->cmd[4] = 36;
 883                 srb->datalen = 36;
 884                 srb->cmdlen = 12;
 885                 i = ss->transport(srb, ss);
 886                 USB_STOR_PRINTF("inquiry returns %d\n", i);
 887                 if (i == 0)
 888                         break;
 889         } while (retry--);
 890
 891         if (!retry) {
 892                 printf("error in inquiry\n");
 893                 return -1;
 894         }
 895         return 0;
 896 }
 897
 898 static int usb_request_sense(ccb *srb, struct us_data *ss)
 899 {
 900         char *ptr;
 901
 902         ptr = (char *)srb->pdata;
 903         memset(&srb->cmd[0], 0, 12);
 904         srb->cmd[0] = SCSI_REQ_SENSE;
 905         srb->cmd[1] = srb->lun << 5;
 906         srb->cmd[4] = 18;
 907         srb->datalen = 18;
 908         srb->pdata = &srb->sense_buf[0];
 909         srb->cmdlen = 12;
 910         ss->transport(srb, ss);
 911         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",
 912                         srb->sense_buf[2], srb->sense_buf[12],
 913                         srb->sense_buf[13]);
 914         srb->pdata = (uchar *)ptr;
 915         return 0;
 916 }
 917
 918 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
 919 {
 920         int retries = 10;
 921
 922         do {
 923                 memset(&srb->cmd[0], 0, 12);
 924                 srb->cmd[0] = SCSI_TST_U_RDY;
 925                 srb->cmd[1] = srb->lun << 5;
 926                 srb->datalen = 0;
 927                 srb->cmdlen = 12;
 928                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
 929                         return 0;
 930                 usb_request_sense(srb, ss);
 931                 wait_ms(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         USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks);
 969         return ss->transport(srb, ss);
 970 }
 971
 972
 973 #ifdef CONFIG_USB_BIN_FIXUP
 974 /*
 975  * Some USB storage devices queried for SCSI identification data respond with
 976  * binary strings, which if output to the console freeze the terminal. The
 977  * workaround is to modify the vendor and product strings read from such
 978  * device with proper values (as reported by 'usb info').
 979  *
 980  * Vendor and product length limits are taken from the definition of
 981  * block_dev_desc_t in include/part.h.
 982  */
 983 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
 984                                 unsigned char vendor[],
 985                                 unsigned char product[]) {
 986         const unsigned char max_vendor_len = 40;
 987         const unsigned char max_product_len = 20;
 988         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
 989                 strncpy((char *)vendor, "SMSC", max_vendor_len);
 990                 strncpy((char *)product, "Flash Media Cntrller",
 991                         max_product_len);
 992         }
 993 }
 994 #endif /* CONFIG_USB_BIN_FIXUP */
 995
 996 #define USB_MAX_READ_BLK 20
 997
 998 unsigned long usb_stor_read(int device, unsigned long blknr,
 999                             unsigned long blkcnt, void *buffer)
1000 {
1001         unsigned long start, blks, buf_addr;
1002         unsigned short smallblks;
1003         struct usb_device *dev;
1004         int retry, i;
1005         ccb *srb = &usb_ccb;
1006
1007         if (blkcnt == 0)
1008                 return 0;
1009
1010         device &= 0xff;
1011         /* Setup  device */
1012         USB_STOR_PRINTF("\nusb_read: dev %d \n", device);
1013         dev = NULL;
1014         for (i = 0; i < USB_MAX_DEVICE; i++) {
1015                 dev = usb_get_dev_index(i);
1016                 if (dev == NULL)
1017                         return 0;
1018                 if (dev->devnum == usb_dev_desc[device].target)
1019                         break;
1020         }
1021
1022         usb_disable_asynch(1); /* asynch transfer not allowed */
1023         srb->lun = usb_dev_desc[device].lun;
1024         buf_addr = (unsigned long)buffer;
1025         start = blknr;
1026         blks = blkcnt;
1027         if (usb_test_unit_ready(srb, (struct us_data *)dev->privptr)) {
1028                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1029                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1030                        srb->sense_buf[13]);
1031                 return 0;
1032         }
1033
1034         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx"
1035                         " buffer %lx\n", device, start, blks, buf_addr);
1036
1037         do {
1038                 /* XXX need some comment here */
1039                 retry = 2;
1040                 srb->pdata = (unsigned char *)buf_addr;
1041                 if (blks > USB_MAX_READ_BLK)
1042                         smallblks = USB_MAX_READ_BLK;
1043                 else
1044                         smallblks = (unsigned short) blks;
1045 retry_it:
1046                 if (smallblks == USB_MAX_READ_BLK)
1047                         usb_show_progress();
1048                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1049                 srb->pdata = (unsigned char *)buf_addr;
1050                 if (usb_read_10(srb, (struct us_data *)dev->privptr, start,
1051                     smallblks)) {
1052                         USB_STOR_PRINTF("Read ERROR\n");
1053                         usb_request_sense(srb, (struct us_data *)dev->privptr);
1054                         if (retry--)
1055                                 goto retry_it;
1056                         blkcnt -= blks;
1057                         break;
1058                 }
1059                 start += smallblks;
1060                 blks -= smallblks;
1061                 buf_addr += srb->datalen;
1062         } while (blks != 0);
1063
1064         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",
1065                         start, smallblks, buf_addr);
1066
1067         usb_disable_asynch(0); /* asynch transfer allowed */
1068         if (blkcnt >= USB_MAX_READ_BLK)
1069                 printf("\n");
1070         return blkcnt;
1071 }
1072
1073
1074 /* Probe to see if a new device is actually a Storage device */
1075 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1076                       struct us_data *ss)
1077 {
1078         struct usb_interface_descriptor *iface;
1079         int i;
1080         unsigned int flags = 0;
1081
1082         int protocol = 0;
1083         int subclass = 0;
1084
1085         /* let's examine the device now */
1086         iface = &dev->config.if_desc[ifnum];
1087
1088 #if 0
1089         /* this is the place to patch some storage devices */
1090         USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1091                         dev->descriptor.idProduct);
1092
1093         if ((dev->descriptor.idVendor) == 0x066b &&
1094             (dev->descriptor.idProduct) == 0x0103) {
1095                 USB_STOR_PRINTF("patched for E-USB\n");
1096                 protocol = US_PR_CB;
1097                 subclass = US_SC_UFI;       /* an assumption */
1098         }
1099 #endif
1100
1101         if (dev->descriptor.bDeviceClass != 0 ||
1102                         iface->bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1103                         iface->bInterfaceSubClass < US_SC_MIN ||
1104                         iface->bInterfaceSubClass > US_SC_MAX) {
1105                 /* if it's not a mass storage, we go no further */
1106                 return 0;
1107         }
1108
1109         memset(ss, 0, sizeof(struct us_data));
1110
1111         /* At this point, we know we've got a live one */
1112         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1113
1114         /* Initialize the us_data structure with some useful info */
1115         ss->flags = flags;
1116         ss->ifnum = ifnum;
1117         ss->pusb_dev = dev;
1118         ss->attention_done = 0;
1119
1120         /* If the device has subclass and protocol, then use that.  Otherwise,
1121          * take data from the specific interface.
1122          */
1123         if (subclass) {
1124                 ss->subclass = subclass;
1125                 ss->protocol = protocol;
1126         } else {
1127                 ss->subclass = iface->bInterfaceSubClass;
1128                 ss->protocol = iface->bInterfaceProtocol;
1129         }
1130
1131         /* set the handler pointers based on the protocol */
1132         USB_STOR_PRINTF("Transport: ");
1133         switch (ss->protocol) {
1134         case US_PR_CB:
1135                 USB_STOR_PRINTF("Control/Bulk\n");
1136                 ss->transport = usb_stor_CB_transport;
1137                 ss->transport_reset = usb_stor_CB_reset;
1138                 break;
1139
1140         case US_PR_CBI:
1141                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1142                 ss->transport = usb_stor_CB_transport;
1143                 ss->transport_reset = usb_stor_CB_reset;
1144                 break;
1145         case US_PR_BULK:
1146                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1147                 ss->transport = usb_stor_BBB_transport;
1148                 ss->transport_reset = usb_stor_BBB_reset;
1149                 break;
1150         default:
1151                 printf("USB Storage Transport unknown / not yet implemented\n");
1152                 return 0;
1153                 break;
1154         }
1155
1156         /*
1157          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1158          * An optional interrupt is OK (necessary for CBI protocol).
1159          * We will ignore any others.
1160          */
1161         for (i = 0; i < iface->bNumEndpoints; i++) {
1162                 /* is it an BULK endpoint? */
1163                 if ((iface->ep_desc[i].bmAttributes &
1164                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1165                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1166                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1167                                         USB_ENDPOINT_NUMBER_MASK;
1168                         else
1169                                 ss->ep_out =
1170                                         iface->ep_desc[i].bEndpointAddress &
1171                                         USB_ENDPOINT_NUMBER_MASK;
1172                 }
1173
1174                 /* is it an interrupt endpoint? */
1175                 if ((iface->ep_desc[i].bmAttributes &
1176                     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1177                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1178                                 USB_ENDPOINT_NUMBER_MASK;
1179                         ss->irqinterval = iface->ep_desc[i].bInterval;
1180                 }
1181         }
1182         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1183                   ss->ep_in, ss->ep_out, ss->ep_int);
1184
1185         /* Do some basic sanity checks, and bail if we find a problem */
1186         if (usb_set_interface(dev, iface->bInterfaceNumber, 0) ||
1187             !ss->ep_in || !ss->ep_out ||
1188             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1189                 USB_STOR_PRINTF("Problems with device\n");
1190                 return 0;
1191         }
1192         /* set class specific stuff */
1193         /* We only handle certain protocols.  Currently, these are
1194          * the only ones.
1195          * The SFF8070 accepts the requests used in u-boot
1196          */
1197         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1198             ss->subclass != US_SC_8070) {
1199                 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1200                 return 0;
1201         }
1202         if (ss->ep_int) {
1203                 /* we had found an interrupt endpoint, prepare irq pipe
1204                  * set up the IRQ pipe and handler
1205                  */
1206                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1207                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1208                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1209                 dev->irq_handle = usb_stor_irq;
1210         }
1211         dev->privptr = (void *)ss;
1212         return 1;
1213 }
1214
1215 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1216                       block_dev_desc_t *dev_desc)
1217 {
1218         unsigned char perq, modi;
1219         unsigned long cap[2];
1220         unsigned long *capacity, *blksz;
1221         ccb *pccb = &usb_ccb;
1222
1223         /* for some reasons a couple of devices would not survive this reset */
1224         if (
1225             /* Sony USM256E */
1226             (dev->descriptor.idVendor == 0x054c &&
1227              dev->descriptor.idProduct == 0x019e)
1228             ||
1229             /* USB007 Mini-USB2 Flash Drive */
1230             (dev->descriptor.idVendor == 0x066f &&
1231              dev->descriptor.idProduct == 0x2010)
1232             ||
1233             /* SanDisk Corporation Cruzer Micro 20044318410546613953 */
1234             (dev->descriptor.idVendor == 0x0781 &&
1235              dev->descriptor.idProduct == 0x5151)
1236             ||
1237             /*
1238              * SanDisk Corporation U3 Cruzer Micro 1/4GB
1239              * Flash Drive 000016244373FFB4
1240              */
1241             (dev->descriptor.idVendor == 0x0781 &&
1242              dev->descriptor.idProduct == 0x5406)
1243             )
1244                 USB_STOR_PRINTF("usb_stor_get_info: skipping RESET..\n");
1245         else
1246                 ss->transport_reset(ss);
1247
1248         pccb->pdata = usb_stor_buf;
1249
1250         dev_desc->target = dev->devnum;
1251         pccb->lun = dev_desc->lun;
1252         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1253
1254         if (usb_inquiry(pccb, ss))
1255                 return -1;
1256
1257         perq = usb_stor_buf[0];
1258         modi = usb_stor_buf[1];
1259
1260         if ((perq & 0x1f) == 0x1f) {
1261                 /* skip unknown devices */
1262                 return 0;
1263         }
1264         if ((modi&0x80) == 0x80) {
1265                 /* drive is removable */
1266                 dev_desc->removable = 1;
1267         }
1268         memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
1269         memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
1270         memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
1271         dev_desc->vendor[8] = 0;
1272         dev_desc->product[16] = 0;
1273         dev_desc->revision[4] = 0;
1274 #ifdef CONFIG_USB_BIN_FIXUP
1275         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1276                       (uchar *)dev_desc->product);
1277 #endif /* CONFIG_USB_BIN_FIXUP */
1278         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1279                         usb_stor_buf[3]);
1280         if (usb_test_unit_ready(pccb, ss)) {
1281                 printf("Device NOT ready\n"
1282                        "   Request Sense returned %02X %02X %02X\n",
1283                        pccb->sense_buf[2], pccb->sense_buf[12],
1284                        pccb->sense_buf[13]);
1285                 if (dev_desc->removable == 1) {
1286                         dev_desc->type = perq;
1287                         return 1;
1288                 }
1289                 return 0;
1290         }
1291         pccb->pdata = (unsigned char *)&cap[0];
1292         memset(pccb->pdata, 0, 8);
1293         if (usb_read_capacity(pccb, ss) != 0) {
1294                 printf("READ_CAP ERROR\n");
1295                 cap[0] = 2880;
1296                 cap[1] = 0x200;
1297         }
1298         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0],
1299                         cap[1]);
1300 #if 0
1301         if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1302                 cap[0] >>= 16;
1303 #endif
1304         cap[0] = cpu_to_be32(cap[0]);
1305         cap[1] = cpu_to_be32(cap[1]);
1306
1307         /* this assumes bigendian! */
1308         cap[0] += 1;
1309         capacity = &cap[0];
1310         blksz = &cap[1];
1311         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",
1312                         *capacity, *blksz);
1313         dev_desc->lba = *capacity;
1314         dev_desc->blksz = *blksz;
1315         dev_desc->type = perq;
1316         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1317         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1318
1319         init_part(dev_desc);
1320
1321         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1322         return 1;
1323 }