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  * 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 static const 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 unsigned long usb_stor_write(int device, unsigned long blknr,
 172                              unsigned long blkcnt, const void *buffer);
 173 struct usb_device * usb_get_dev_index(int index);
 174 void uhci_show_temp_int_td(void);
 175
 176 block_dev_desc_t *usb_stor_get_dev(int index)
 177 {
 178         return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL;
 179 }
 180
 181
 182 void usb_show_progress(void)
 183 {
 184         debug(".");
 185 }
 186
 187 /*******************************************************************************
 188  * show info on storage devices; 'usb start/init' must be invoked earlier
 189  * as we only retrieve structures populated during devices initialization
 190  */
 191 int usb_stor_info(void)
 192 {
 193         int i;
 194
 195         if (usb_max_devs > 0) {
 196                 for (i = 0; i < usb_max_devs; i++) {
 197                         printf("  Device %d: ", i);
 198                         dev_print(&usb_dev_desc[i]);
 199                 }
 200                 return 0;
 201         }
 202
 203         printf("No storage devices, perhaps not 'usb start'ed..?\n");
 204         return 1;
 205 }
 206
 207 static unsigned int usb_get_max_lun(struct us_data *us)
 208 {
 209         int len;
 210         unsigned char result;
 211         len = usb_control_msg(us->pusb_dev,
 212                               usb_rcvctrlpipe(us->pusb_dev, 0),
 213                               US_BBB_GET_MAX_LUN,
 214                               USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
 215                               0, us->ifnum,
 216                               &result, sizeof(result),
 217                               USB_CNTL_TIMEOUT * 5);
 218         USB_STOR_PRINTF("Get Max LUN -> len = %i, result = %i\n",
 219                         len, (int) result);
 220         return (len > 0) ? result : 0;
 221 }
 222
 223 /*******************************************************************************
 224  * scan the usb and reports device info
 225  * to the user if mode = 1
 226  * returns current device or -1 if no
 227  */
 228 int usb_stor_scan(int mode)
 229 {
 230         unsigned char i;
 231         struct usb_device *dev;
 232
 233         /* GJ */
 234         memset(usb_stor_buf, 0, sizeof(usb_stor_buf));
 235
 236         if (mode == 1)
 237                 printf("       scanning bus for storage devices... ");
 238
 239         usb_disable_asynch(1); /* asynch transfer not allowed */
 240
 241         for (i = 0; i < USB_MAX_STOR_DEV; i++) {
 242                 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
 243                 usb_dev_desc[i].if_type = IF_TYPE_USB;
 244                 usb_dev_desc[i].dev = i;
 245                 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
 246                 usb_dev_desc[i].target = 0xff;
 247                 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
 248                 usb_dev_desc[i].block_read = usb_stor_read;
 249                 usb_dev_desc[i].block_write = usb_stor_write;
 250         }
 251
 252         usb_max_devs = 0;
 253         for (i = 0; i < USB_MAX_DEVICE; i++) {
 254                 dev = usb_get_dev_index(i); /* get device */
 255                 USB_STOR_PRINTF("i=%d\n", i);
 256                 if (dev == NULL)
 257                         break; /* no more devices avaiable */
 258
 259                 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) {
 260                         /* OK, it's a storage device.  Iterate over its LUNs
 261                          * and populate `usb_dev_desc'.
 262                          */
 263                         int lun, max_lun, start = usb_max_devs;
 264
 265                         max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
 266                         for (lun = 0;
 267                              lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
 268                              lun++) {
 269                                 usb_dev_desc[usb_max_devs].lun = lun;
 270                                 if (usb_stor_get_info(dev, &usb_stor[start],
 271                                                       &usb_dev_desc[usb_max_devs]) == 1) {
 272                                 usb_max_devs++;
 273                 }
 274                         }
 275                 }
 276                 /* if storage device */
 277                 if (usb_max_devs == USB_MAX_STOR_DEV) {
 278                         printf("max USB Storage Device reached: %d stopping\n",
 279                                 usb_max_devs);
 280                         break;
 281                 }
 282         } /* for */
 283
 284         usb_disable_asynch(0); /* asynch transfer allowed */
 285         printf("%d Storage Device(s) found\n", usb_max_devs);
 286         if (usb_max_devs > 0)
 287                 return 0;
 288         return -1;
 289 }
 290
 291 static int usb_stor_irq(struct usb_device *dev)
 292 {
 293         struct us_data *us;
 294         us = (struct us_data *)dev->privptr;
 295
 296         if (us->ip_wanted)
 297                 us->ip_wanted = 0;
 298         return 0;
 299 }
 300
 301
 302 #ifdef  USB_STOR_DEBUG
 303
 304 static void usb_show_srb(ccb *pccb)
 305 {
 306         int i;
 307         printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
 308         for (i = 0; i < 12; i++)
 309                 printf("%02X ", pccb->cmd[i]);
 310         printf("\n");
 311 }
 312
 313 static void display_int_status(unsigned long tmp)
 314 {
 315         printf("Status: %s %s %s %s %s %s %s\n",
 316                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 317                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 318                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 319                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 320                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 321                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 322                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 323 }
 324 #endif
 325 /***********************************************************************
 326  * Data transfer routines
 327  ***********************************************************************/
 328
 329 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 330 {
 331         int max_size;
 332         int this_xfer;
 333         int result;
 334         int partial;
 335         int maxtry;
 336         int stat;
 337
 338         /* determine the maximum packet size for these transfers */
 339         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 340
 341         /* while we have data left to transfer */
 342         while (length) {
 343
 344                 /* calculate how long this will be -- maximum or a remainder */
 345                 this_xfer = length > max_size ? max_size : length;
 346                 length -= this_xfer;
 347
 348                 /* setup the retry counter */
 349                 maxtry = 10;
 350
 351                 /* set up the transfer loop */
 352                 do {
 353                         /* transfer the data */
 354                         USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
 355                                   (unsigned int)buf, this_xfer, 11 - maxtry);
 356                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 357                                               this_xfer, &partial,
 358                                               USB_CNTL_TIMEOUT * 5);
 359                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
 360                                   result, partial, this_xfer);
 361                         if (us->pusb_dev->status != 0) {
 362                                 /* if we stall, we need to clear it before
 363                                  * we go on
 364                                  */
 365 #ifdef USB_STOR_DEBUG
 366                                 display_int_status(us->pusb_dev->status);
 367 #endif
 368                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 369                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
 370                                         stat = us->pusb_dev->status;
 371                                         usb_clear_halt(us->pusb_dev, pipe);
 372                                         us->pusb_dev->status = stat;
 373                                         if (this_xfer == partial) {
 374                                                 USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n", us->pusb_dev->status);
 375                                                 return 0;
 376                                         }
 377                                         else
 378                                                 return result;
 379                                 }
 380                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 381                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
 382                                         return result;
 383                                 }
 384                                 USB_STOR_PRINTF("bulk transferred with error");
 385                                 if (this_xfer == partial) {
 386                                         USB_STOR_PRINTF(" %d, but data ok\n",
 387                                                         us->pusb_dev->status);
 388                                         return 0;
 389                                 }
 390                                 /* if our try counter reaches 0, bail out */
 391                                         USB_STOR_PRINTF(" %d, data %d\n",
 392                                                 us->pusb_dev->status, partial);
 393                                 if (!maxtry--)
 394                                                 return result;
 395                         }
 396                         /* update to show what data was transferred */
 397                         this_xfer -= partial;
 398                         buf += partial;
 399                         /* continue until this transfer is done */
 400                 } while (this_xfer);
 401         }
 402
 403         /* if we get here, we're done and successful */
 404         return 0;
 405 }
 406
 407 static int usb_stor_BBB_reset(struct us_data *us)
 408 {
 409         int result;
 410         unsigned int pipe;
 411
 412         /*
 413          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 414          *
 415          * For Reset Recovery the host shall issue in the following order:
 416          * a) a Bulk-Only Mass Storage Reset
 417          * b) a Clear Feature HALT to the Bulk-In endpoint
 418          * c) a Clear Feature HALT to the Bulk-Out endpoint
 419          *
 420          * This is done in 3 steps.
 421          *
 422          * If the reset doesn't succeed, the device should be port reset.
 423          *
 424          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 425          */
 426         USB_STOR_PRINTF("BBB_reset\n");
 427         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 428                                  US_BBB_RESET,
 429                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 430                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5);
 431
 432         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 433                 USB_STOR_PRINTF("RESET:stall\n");
 434                 return -1;
 435         }
 436
 437         /* long wait for reset */
 438         wait_ms(150);
 439         USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n", result,
 440                         us->pusb_dev->status);
 441         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 442         result = usb_clear_halt(us->pusb_dev, pipe);
 443         /* long wait for reset */
 444         wait_ms(150);
 445         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n",
 446                         result, us->pusb_dev->status);
 447         /* long wait for reset */
 448         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 449         result = usb_clear_halt(us->pusb_dev, pipe);
 450         wait_ms(150);
 451         USB_STOR_PRINTF("BBB_reset result %d: status %X"
 452                         " clearing OUT endpoint\n", result,
 453                         us->pusb_dev->status);
 454         USB_STOR_PRINTF("BBB_reset done\n");
 455         return 0;
 456 }
 457
 458 /* FIXME: this reset function doesn't really reset the port, and it
 459  * should. Actually it should probably do what it's doing here, and
 460  * reset the port physically
 461  */
 462 static int usb_stor_CB_reset(struct us_data *us)
 463 {
 464         unsigned char cmd[12];
 465         int result;
 466
 467         USB_STOR_PRINTF("CB_reset\n");
 468         memset(cmd, 0xff, sizeof(cmd));
 469         cmd[0] = SCSI_SEND_DIAG;
 470         cmd[1] = 4;
 471         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 472                                  US_CBI_ADSC,
 473                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 474                                  0, us->ifnum, cmd, sizeof(cmd),
 475                                  USB_CNTL_TIMEOUT * 5);
 476
 477         /* long wait for reset */
 478         wait_ms(1500);
 479         USB_STOR_PRINTF("CB_reset result %d: status %X"
 480                         " clearing endpoint halt\n", result,
 481                         us->pusb_dev->status);
 482         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 483         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 484
 485         USB_STOR_PRINTF("CB_reset done\n");
 486         return 0;
 487 }
 488
 489 /*
 490  * Set up the command for a BBB device. Note that the actual SCSI
 491  * command is copied into cbw.CBWCDB.
 492  */
 493 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 494 {
 495         int result;
 496         int actlen;
 497         int dir_in;
 498         unsigned int pipe;
 499         umass_bbb_cbw_t cbw;
 500
 501         dir_in = US_DIRECTION(srb->cmd[0]);
 502
 503 #ifdef BBB_COMDAT_TRACE
 504         printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n",
 505                 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
 506                 srb->pdata);
 507         if (srb->cmdlen) {
 508                 for (result = 0; result < srb->cmdlen; result++)
 509                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 510                 printf("\n");
 511         }
 512 #endif
 513         /* sanity checks */
 514         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 515                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
 516                 return -1;
 517         }
 518
 519         /* always OUT to the ep */
 520         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 521
 522         cbw.dCBWSignature = cpu_to_le32(CBWSIGNATURE);
 523         cbw.dCBWTag = cpu_to_le32(CBWTag++);
 524         cbw.dCBWDataTransferLength = cpu_to_le32(srb->datalen);
 525         cbw.bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
 526         cbw.bCBWLUN = srb->lun;
 527         cbw.bCDBLength = srb->cmdlen;
 528         /* copy the command data into the CBW command data buffer */
 529         /* DST SRC LEN!!! */
 530         memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen);
 531         result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE,
 532                               &actlen, USB_CNTL_TIMEOUT * 5);
 533         if (result < 0)
 534                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 535         return result;
 536 }
 537
 538 /* FIXME: we also need a CBI_command which sets up the completion
 539  * interrupt, and waits for it
 540  */
 541 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 542 {
 543         int result = 0;
 544         int dir_in, retry;
 545         unsigned int pipe;
 546         unsigned long status;
 547
 548         retry = 5;
 549         dir_in = US_DIRECTION(srb->cmd[0]);
 550
 551         if (dir_in)
 552                 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 553         else
 554                 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 555
 556         while (retry--) {
 557                 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry);
 558 #ifdef USB_STOR_DEBUG
 559                 usb_show_srb(srb);
 560 #endif
 561                 /* let's send the command via the control pipe */
 562                 result = usb_control_msg(us->pusb_dev,
 563                                          usb_sndctrlpipe(us->pusb_dev , 0),
 564                                          US_CBI_ADSC,
 565                                          USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 566                                          0, us->ifnum,
 567                                          srb->cmd, srb->cmdlen,
 568                                          USB_CNTL_TIMEOUT * 5);
 569                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
 570                                 " status %X\n", result, us->pusb_dev->status);
 571                 /* check the return code for the command */
 572                 if (result < 0) {
 573                         if (us->pusb_dev->status & USB_ST_STALLED) {
 574                                 status = us->pusb_dev->status;
 575                                 USB_STOR_PRINTF(" stall during command found,"
 576                                                 " clear pipe\n");
 577                                 usb_clear_halt(us->pusb_dev,
 578                                               usb_sndctrlpipe(us->pusb_dev, 0));
 579                                 us->pusb_dev->status = status;
 580                         }
 581                         USB_STOR_PRINTF(" error during command %02X"
 582                                         " Stat = %X\n", srb->cmd[0],
 583                                         us->pusb_dev->status);
 584                         return result;
 585                 }
 586                 /* transfer the data payload for this command, if one exists*/
 587
 588                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
 589                                 " direction is %s to go 0x%lx\n", result,
 590                                 dir_in ? "IN" : "OUT", srb->datalen);
 591                 if (srb->datalen) {
 592                         result = us_one_transfer(us, pipe, (char *)srb->pdata,
 593                                                  srb->datalen);
 594                         USB_STOR_PRINTF("CBI attempted to transfer data,"
 595                                         " result is %d status %lX, len %d\n",
 596                                         result, us->pusb_dev->status,
 597                                         us->pusb_dev->act_len);
 598                         if (!(us->pusb_dev->status & USB_ST_NAK_REC))
 599                                 break;
 600                 } /* if (srb->datalen) */
 601                 else
 602                         break;
 603         }
 604         /* return result */
 605
 606         return result;
 607 }
 608
 609
 610 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 611 {
 612         int timeout;
 613
 614         us->ip_wanted = 1;
 615         submit_int_msg(us->pusb_dev, us->irqpipe,
 616                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 617         timeout = 1000;
 618         while (timeout--) {
 619                 if ((volatile int *) us->ip_wanted == 0)
 620                         break;
 621                 wait_ms(10);
 622         }
 623         if (us->ip_wanted) {
 624                 printf("        Did not get interrupt on CBI\n");
 625                 us->ip_wanted = 0;
 626                 return USB_STOR_TRANSPORT_ERROR;
 627         }
 628         USB_STOR_PRINTF
 629                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
 630                  us->ip_data, us->pusb_dev->irq_act_len,
 631                  us->pusb_dev->irq_status);
 632         /* UFI gives us ASC and ASCQ, like a request sense */
 633         if (us->subclass == US_SC_UFI) {
 634                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 635                     srb->cmd[0] == SCSI_INQUIRY)
 636                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 637                 else if (us->ip_data)
 638                         return USB_STOR_TRANSPORT_FAILED;
 639                 else
 640                         return USB_STOR_TRANSPORT_GOOD;
 641         }
 642         /* otherwise, we interpret the data normally */
 643         switch (us->ip_data) {
 644         case 0x0001:
 645                 return USB_STOR_TRANSPORT_GOOD;
 646         case 0x0002:
 647                 return USB_STOR_TRANSPORT_FAILED;
 648         default:
 649                 return USB_STOR_TRANSPORT_ERROR;
 650         }                       /* switch */
 651         return USB_STOR_TRANSPORT_ERROR;
 652 }
 653
 654 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 655 #define USB_TRANSPORT_NOT_READY_RETRY 10
 656
 657 /* clear a stall on an endpoint - special for BBB devices */
 658 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 659 {
 660         int result;
 661
 662         /* ENDPOINT_HALT = 0, so set value to 0 */
 663         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 664                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 665                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5);
 666         return result;
 667 }
 668
 669 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 670 {
 671         int result, retry;
 672         int dir_in;
 673         int actlen, data_actlen;
 674         unsigned int pipe, pipein, pipeout;
 675         umass_bbb_csw_t csw;
 676 #ifdef BBB_XPORT_TRACE
 677         unsigned char *ptr;
 678         int index;
 679 #endif
 680
 681         dir_in = US_DIRECTION(srb->cmd[0]);
 682
 683         /* COMMAND phase */
 684         USB_STOR_PRINTF("COMMAND phase\n");
 685         result = usb_stor_BBB_comdat(srb, us);
 686         if (result < 0) {
 687                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
 688                         us->pusb_dev->status);
 689                 usb_stor_BBB_reset(us);
 690                 return USB_STOR_TRANSPORT_FAILED;
 691         }
 692         wait_ms(5);
 693         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 694         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 695         /* DATA phase + error handling */
 696         data_actlen = 0;
 697         /* no data, go immediately to the STATUS phase */
 698         if (srb->datalen == 0)
 699                 goto st;
 700         USB_STOR_PRINTF("DATA phase\n");
 701         if (dir_in)
 702                 pipe = pipein;
 703         else
 704                 pipe = pipeout;
 705         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
 706                               &data_actlen, USB_CNTL_TIMEOUT * 5);
 707         /* special handling of STALL in DATA phase */
 708         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 709                 USB_STOR_PRINTF("DATA:stall\n");
 710                 /* clear the STALL on the endpoint */
 711                 result = usb_stor_BBB_clear_endpt_stall(us,
 712                                         dir_in ? us->ep_in : us->ep_out);
 713                 if (result >= 0)
 714                         /* continue on to STATUS phase */
 715                         goto st;
 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         for (index = 0; index < data_actlen; index++)
 725                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 726         printf("\n");
 727 #endif
 728         /* STATUS phase + error handling */
 729 st:
 730         retry = 0;
 731 again:
 732         USB_STOR_PRINTF("STATUS phase\n");
 733         result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE,
 734                                 &actlen, USB_CNTL_TIMEOUT*5);
 735
 736         /* special handling of STALL in STATUS phase */
 737         if ((result < 0) && (retry < 1) &&
 738             (us->pusb_dev->status & USB_ST_STALLED)) {
 739                 USB_STOR_PRINTF("STATUS:stall\n");
 740                 /* clear the STALL on the endpoint */
 741                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 742                 if (result >= 0 && (retry++ < 1))
 743                         /* do a retry */
 744                         goto again;
 745         }
 746         if (result < 0) {
 747                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 748                         us->pusb_dev->status);
 749                 usb_stor_BBB_reset(us);
 750                 return USB_STOR_TRANSPORT_FAILED;
 751         }
 752 #ifdef BBB_XPORT_TRACE
 753         ptr = (unsigned char *)&csw;
 754         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 755                 printf("ptr[%d] %#x ", index, ptr[index]);
 756         printf("\n");
 757 #endif
 758         /* misuse pipe to get the residue */
 759         pipe = le32_to_cpu(csw.dCSWDataResidue);
 760         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 761                 pipe = srb->datalen - data_actlen;
 762         if (CSWSIGNATURE != le32_to_cpu(csw.dCSWSignature)) {
 763                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
 764                 usb_stor_BBB_reset(us);
 765                 return USB_STOR_TRANSPORT_FAILED;
 766         } else if ((CBWTag - 1) != le32_to_cpu(csw.dCSWTag)) {
 767                 USB_STOR_PRINTF("!Tag\n");
 768                 usb_stor_BBB_reset(us);
 769                 return USB_STOR_TRANSPORT_FAILED;
 770         } else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
 771                 USB_STOR_PRINTF(">PHASE\n");
 772                 usb_stor_BBB_reset(us);
 773                 return USB_STOR_TRANSPORT_FAILED;
 774         } else if (csw.bCSWStatus == CSWSTATUS_PHASE) {
 775                 USB_STOR_PRINTF("=PHASE\n");
 776                 usb_stor_BBB_reset(us);
 777                 return USB_STOR_TRANSPORT_FAILED;
 778         } else if (data_actlen > srb->datalen) {
 779                 USB_STOR_PRINTF("transferred %dB instead of %dB\n",
 780                         data_actlen, srb->datalen);
 781                 return USB_STOR_TRANSPORT_FAILED;
 782         } else if (csw.bCSWStatus == CSWSTATUS_FAILED) {
 783                 USB_STOR_PRINTF("FAILED\n");
 784                 return USB_STOR_TRANSPORT_FAILED;
 785         }
 786
 787         return result;
 788 }
 789
 790 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 791 {
 792         int result, status;
 793         ccb *psrb;
 794         ccb reqsrb;
 795         int retry, notready;
 796
 797         psrb = &reqsrb;
 798         status = USB_STOR_TRANSPORT_GOOD;
 799         retry = 0;
 800         notready = 0;
 801         /* issue the command */
 802 do_retry:
 803         result = usb_stor_CB_comdat(srb, us);
 804         USB_STOR_PRINTF("command / Data returned %d, status %X\n",
 805                         result, us->pusb_dev->status);
 806         /* if this is an CBI Protocol, get IRQ */
 807         if (us->protocol == US_PR_CBI) {
 808                 status = usb_stor_CBI_get_status(srb, us);
 809                 /* if the status is error, report it */
 810                 if (status == USB_STOR_TRANSPORT_ERROR) {
 811                         USB_STOR_PRINTF(" USB CBI Command Error\n");
 812                         return status;
 813                 }
 814                 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
 815                 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
 816                 if (!us->ip_data) {
 817                         /* if the status is good, report it */
 818                         if (status == USB_STOR_TRANSPORT_GOOD) {
 819                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
 820                                 return status;
 821                         }
 822                 }
 823         }
 824         /* do we have to issue an auto request? */
 825         /* HERE we have to check the result */
 826         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 827                 USB_STOR_PRINTF("ERROR %X\n", us->pusb_dev->status);
 828                 us->transport_reset(us);
 829                 return USB_STOR_TRANSPORT_ERROR;
 830         }
 831         if ((us->protocol == US_PR_CBI) &&
 832             ((srb->cmd[0] == SCSI_REQ_SENSE) ||
 833             (srb->cmd[0] == SCSI_INQUIRY))) {
 834                 /* do not issue an autorequest after request sense */
 835                 USB_STOR_PRINTF("No auto request and good\n");
 836                 return USB_STOR_TRANSPORT_GOOD;
 837         }
 838         /* issue an request_sense */
 839         memset(&psrb->cmd[0], 0, 12);
 840         psrb->cmd[0] = SCSI_REQ_SENSE;
 841         psrb->cmd[1] = srb->lun << 5;
 842         psrb->cmd[4] = 18;
 843         psrb->datalen = 18;
 844         psrb->pdata = &srb->sense_buf[0];
 845         psrb->cmdlen = 12;
 846         /* issue the command */
 847         result = usb_stor_CB_comdat(psrb, us);
 848         USB_STOR_PRINTF("auto request returned %d\n", result);
 849         /* if this is an CBI Protocol, get IRQ */
 850         if (us->protocol == US_PR_CBI)
 851                 status = usb_stor_CBI_get_status(psrb, us);
 852
 853         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 854                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n",
 855                                 us->pusb_dev->status);
 856                 return USB_STOR_TRANSPORT_ERROR;
 857         }
 858         USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 859                         srb->sense_buf[0], srb->sense_buf[2],
 860                         srb->sense_buf[12], srb->sense_buf[13]);
 861         /* Check the auto request result */
 862         if ((srb->sense_buf[2] == 0) &&
 863             (srb->sense_buf[12] == 0) &&
 864             (srb->sense_buf[13] == 0)) {
 865                 /* ok, no sense */
 866                 return USB_STOR_TRANSPORT_GOOD;
 867         }
 868
 869         /* Check the auto request result */
 870         switch (srb->sense_buf[2]) {
 871         case 0x01:
 872                 /* Recovered Error */
 873                 return USB_STOR_TRANSPORT_GOOD;
 874                 break;
 875         case 0x02:
 876                 /* Not Ready */
 877                 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 878                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 879                                " 0x%02X (NOT READY)\n", srb->cmd[0],
 880                                 srb->sense_buf[0], srb->sense_buf[2],
 881                                 srb->sense_buf[12], srb->sense_buf[13]);
 882                         return USB_STOR_TRANSPORT_FAILED;
 883                 } else {
 884                         wait_ms(100);
 885                         goto do_retry;
 886                 }
 887                 break;
 888         default:
 889                 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 890                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 891                                " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
 892                                 srb->sense_buf[2], srb->sense_buf[12],
 893                                 srb->sense_buf[13]);
 894                         return USB_STOR_TRANSPORT_FAILED;
 895                 } else
 896                         goto do_retry;
 897                 break;
 898         }
 899         return USB_STOR_TRANSPORT_FAILED;
 900 }
 901
 902
 903 static int usb_inquiry(ccb *srb, struct us_data *ss)
 904 {
 905         int retry, i;
 906         retry = 5;
 907         do {
 908                 memset(&srb->cmd[0], 0, 12);
 909                 srb->cmd[0] = SCSI_INQUIRY;
 910                 srb->cmd[1] = srb->lun << 5;
 911                 srb->cmd[4] = 36;
 912                 srb->datalen = 36;
 913                 srb->cmdlen = 12;
 914                 i = ss->transport(srb, ss);
 915                 USB_STOR_PRINTF("inquiry returns %d\n", i);
 916                 if (i == 0)
 917                         break;
 918         } while (--retry);
 919
 920         if (!retry) {
 921                 printf("error in inquiry\n");
 922                 return -1;
 923         }
 924         return 0;
 925 }
 926
 927 static int usb_request_sense(ccb *srb, struct us_data *ss)
 928 {
 929         char *ptr;
 930
 931         ptr = (char *)srb->pdata;
 932         memset(&srb->cmd[0], 0, 12);
 933         srb->cmd[0] = SCSI_REQ_SENSE;
 934         srb->cmd[1] = srb->lun << 5;
 935         srb->cmd[4] = 18;
 936         srb->datalen = 18;
 937         srb->pdata = &srb->sense_buf[0];
 938         srb->cmdlen = 12;
 939         ss->transport(srb, ss);
 940         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",
 941                         srb->sense_buf[2], srb->sense_buf[12],
 942                         srb->sense_buf[13]);
 943         srb->pdata = (uchar *)ptr;
 944         return 0;
 945 }
 946
 947 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
 948 {
 949         int retries = 10;
 950
 951         do {
 952                 memset(&srb->cmd[0], 0, 12);
 953                 srb->cmd[0] = SCSI_TST_U_RDY;
 954                 srb->cmd[1] = srb->lun << 5;
 955                 srb->datalen = 0;
 956                 srb->cmdlen = 12;
 957                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
 958                         return 0;
 959                 usb_request_sense(srb, ss);
 960                 wait_ms(100);
 961         } while (retries--);
 962
 963         return -1;
 964 }
 965
 966 static int usb_read_capacity(ccb *srb, struct us_data *ss)
 967 {
 968         int retry;
 969         /* XXX retries */
 970         retry = 3;
 971         do {
 972                 memset(&srb->cmd[0], 0, 12);
 973                 srb->cmd[0] = SCSI_RD_CAPAC;
 974                 srb->cmd[1] = srb->lun << 5;
 975                 srb->datalen = 8;
 976                 srb->cmdlen = 12;
 977                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
 978                         return 0;
 979         } while (retry--);
 980
 981         return -1;
 982 }
 983
 984 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
 985                        unsigned short blocks)
 986 {
 987         memset(&srb->cmd[0], 0, 12);
 988         srb->cmd[0] = SCSI_READ10;
 989         srb->cmd[1] = srb->lun << 5;
 990         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
 991         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
 992         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
 993         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
 994         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
 995         srb->cmd[8] = (unsigned char) blocks & 0xff;
 996         srb->cmdlen = 12;
 997         USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks);
 998         return ss->transport(srb, ss);
 999 }
1000
1001 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
1002                         unsigned short blocks)
1003 {
1004         memset(&srb->cmd[0], 0, 12);
1005         srb->cmd[0] = SCSI_WRITE10;
1006         srb->cmd[1] = srb->lun << 5;
1007         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1008         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1009         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1010         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1011         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1012         srb->cmd[8] = (unsigned char) blocks & 0xff;
1013         srb->cmdlen = 12;
1014         USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks);
1015         return ss->transport(srb, ss);
1016 }
1017
1018
1019 #ifdef CONFIG_USB_BIN_FIXUP
1020 /*
1021  * Some USB storage devices queried for SCSI identification data respond with
1022  * binary strings, which if output to the console freeze the terminal. The
1023  * workaround is to modify the vendor and product strings read from such
1024  * device with proper values (as reported by 'usb info').
1025  *
1026  * Vendor and product length limits are taken from the definition of
1027  * block_dev_desc_t in include/part.h.
1028  */
1029 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1030                                 unsigned char vendor[],
1031                                 unsigned char product[]) {
1032         const unsigned char max_vendor_len = 40;
1033         const unsigned char max_product_len = 20;
1034         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1035                 strncpy((char *)vendor, "SMSC", max_vendor_len);
1036                 strncpy((char *)product, "Flash Media Cntrller",
1037                         max_product_len);
1038         }
1039 }
1040 #endif /* CONFIG_USB_BIN_FIXUP */
1041
1042 #define USB_MAX_READ_BLK 20
1043
1044 unsigned long usb_stor_read(int device, unsigned long blknr,
1045                             unsigned long blkcnt, void *buffer)
1046 {
1047         unsigned long start, blks, buf_addr;
1048         unsigned short smallblks;
1049         struct usb_device *dev;
1050         int retry, i;
1051         ccb *srb = &usb_ccb;
1052
1053         if (blkcnt == 0)
1054                 return 0;
1055
1056         device &= 0xff;
1057         /* Setup  device */
1058         USB_STOR_PRINTF("\nusb_read: dev %d \n", device);
1059         dev = NULL;
1060         for (i = 0; i < USB_MAX_DEVICE; i++) {
1061                 dev = usb_get_dev_index(i);
1062                 if (dev == NULL)
1063                         return 0;
1064                 if (dev->devnum == usb_dev_desc[device].target)
1065                         break;
1066         }
1067
1068         usb_disable_asynch(1); /* asynch transfer not allowed */
1069         srb->lun = usb_dev_desc[device].lun;
1070         buf_addr = (unsigned long)buffer;
1071         start = blknr;
1072         blks = blkcnt;
1073         if (usb_test_unit_ready(srb, (struct us_data *)dev->privptr)) {
1074                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1075                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1076                        srb->sense_buf[13]);
1077                 return 0;
1078         }
1079
1080         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx"
1081                         " buffer %lx\n", device, start, blks, buf_addr);
1082
1083         do {
1084                 /* XXX need some comment here */
1085                 retry = 2;
1086                 srb->pdata = (unsigned char *)buf_addr;
1087                 if (blks > USB_MAX_READ_BLK)
1088                         smallblks = USB_MAX_READ_BLK;
1089                 else
1090                         smallblks = (unsigned short) blks;
1091 retry_it:
1092                 if (smallblks == USB_MAX_READ_BLK)
1093                         usb_show_progress();
1094                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1095                 srb->pdata = (unsigned char *)buf_addr;
1096                 if (usb_read_10(srb, (struct us_data *)dev->privptr, start,
1097                     smallblks)) {
1098                         USB_STOR_PRINTF("Read ERROR\n");
1099                         usb_request_sense(srb, (struct us_data *)dev->privptr);
1100                         if (retry--)
1101                                 goto retry_it;
1102                         blkcnt -= blks;
1103                         break;
1104                 }
1105                 start += smallblks;
1106                 blks -= smallblks;
1107                 buf_addr += srb->datalen;
1108         } while (blks != 0);
1109
1110         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",
1111                         start, smallblks, buf_addr);
1112
1113         usb_disable_asynch(0); /* asynch transfer allowed */
1114         if (blkcnt >= USB_MAX_READ_BLK)
1115                 debug("\n");
1116         return blkcnt;
1117 }
1118
1119 #define USB_MAX_WRITE_BLK 20
1120
1121 unsigned long usb_stor_write(int device, unsigned long blknr,
1122                                 unsigned long blkcnt, const void *buffer)
1123 {
1124         unsigned long start, blks, buf_addr;
1125         unsigned short smallblks;
1126         struct usb_device *dev;
1127         int retry, i;
1128         ccb *srb = &usb_ccb;
1129
1130         if (blkcnt == 0)
1131                 return 0;
1132
1133         device &= 0xff;
1134         /* Setup  device */
1135         USB_STOR_PRINTF("\nusb_write: dev %d \n", device);
1136         dev = NULL;
1137         for (i = 0; i < USB_MAX_DEVICE; i++) {
1138                 dev = usb_get_dev_index(i);
1139                 if (dev == NULL)
1140                         return 0;
1141                 if (dev->devnum == usb_dev_desc[device].target)
1142                         break;
1143         }
1144
1145         usb_disable_asynch(1); /* asynch transfer not allowed */
1146
1147         srb->lun = usb_dev_desc[device].lun;
1148         buf_addr = (unsigned long)buffer;
1149         start = blknr;
1150         blks = blkcnt;
1151         if (usb_test_unit_ready(srb, (struct us_data *)dev->privptr)) {
1152                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1153                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1154                         srb->sense_buf[13]);
1155                 return 0;
1156         }
1157
1158         USB_STOR_PRINTF("\nusb_write: dev %d startblk %lx, blccnt %lx"
1159                         " buffer %lx\n", device, start, blks, buf_addr);
1160
1161         do {
1162                 /* If write fails retry for max retry count else
1163                  * return with number of blocks written successfully.
1164                  */
1165                 retry = 2;
1166                 srb->pdata = (unsigned char *)buf_addr;
1167                 if (blks > USB_MAX_WRITE_BLK)
1168                         smallblks = USB_MAX_WRITE_BLK;
1169                 else
1170                         smallblks = (unsigned short) blks;
1171 retry_it:
1172                 if (smallblks == USB_MAX_WRITE_BLK)
1173                         usb_show_progress();
1174                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1175                 srb->pdata = (unsigned char *)buf_addr;
1176                 if (usb_write_10(srb, (struct us_data *)dev->privptr, start,
1177                     smallblks)) {
1178                         USB_STOR_PRINTF("Write ERROR\n");
1179                         usb_request_sense(srb, (struct us_data *)dev->privptr);
1180                         if (retry--)
1181                                 goto retry_it;
1182                         blkcnt -= blks;
1183                         break;
1184                 }
1185                 start += smallblks;
1186                 blks -= smallblks;
1187                 buf_addr += srb->datalen;
1188         } while (blks != 0);
1189
1190         USB_STOR_PRINTF("usb_write: end startblk %lx, blccnt %x buffer %lx\n",
1191                         start, smallblks, buf_addr);
1192
1193         usb_disable_asynch(0); /* asynch transfer allowed */
1194         if (blkcnt >= USB_MAX_WRITE_BLK)
1195                 debug("\n");
1196         return blkcnt;
1197
1198 }
1199
1200 /* Probe to see if a new device is actually a Storage device */
1201 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1202                       struct us_data *ss)
1203 {
1204         struct usb_interface *iface;
1205         int i;
1206         unsigned int flags = 0;
1207
1208         int protocol = 0;
1209         int subclass = 0;
1210
1211         /* let's examine the device now */
1212         iface = &dev->config.if_desc[ifnum];
1213
1214 #if 0
1215         /* this is the place to patch some storage devices */
1216         USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1217                         dev->descriptor.idProduct);
1218
1219         if ((dev->descriptor.idVendor) == 0x066b &&
1220             (dev->descriptor.idProduct) == 0x0103) {
1221                 USB_STOR_PRINTF("patched for E-USB\n");
1222                 protocol = US_PR_CB;
1223                 subclass = US_SC_UFI;       /* an assumption */
1224         }
1225 #endif
1226
1227         if (dev->descriptor.bDeviceClass != 0 ||
1228                         iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1229                         iface->desc.bInterfaceSubClass < US_SC_MIN ||
1230                         iface->desc.bInterfaceSubClass > US_SC_MAX) {
1231                 /* if it's not a mass storage, we go no further */
1232                 return 0;
1233         }
1234
1235         memset(ss, 0, sizeof(struct us_data));
1236
1237         /* At this point, we know we've got a live one */
1238         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1239
1240         /* Initialize the us_data structure with some useful info */
1241         ss->flags = flags;
1242         ss->ifnum = ifnum;
1243         ss->pusb_dev = dev;
1244         ss->attention_done = 0;
1245
1246         /* If the device has subclass and protocol, then use that.  Otherwise,
1247          * take data from the specific interface.
1248          */
1249         if (subclass) {
1250                 ss->subclass = subclass;
1251                 ss->protocol = protocol;
1252         } else {
1253                 ss->subclass = iface->desc.bInterfaceSubClass;
1254                 ss->protocol = iface->desc.bInterfaceProtocol;
1255         }
1256
1257         /* set the handler pointers based on the protocol */
1258         USB_STOR_PRINTF("Transport: ");
1259         switch (ss->protocol) {
1260         case US_PR_CB:
1261                 USB_STOR_PRINTF("Control/Bulk\n");
1262                 ss->transport = usb_stor_CB_transport;
1263                 ss->transport_reset = usb_stor_CB_reset;
1264                 break;
1265
1266         case US_PR_CBI:
1267                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1268                 ss->transport = usb_stor_CB_transport;
1269                 ss->transport_reset = usb_stor_CB_reset;
1270                 break;
1271         case US_PR_BULK:
1272                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1273                 ss->transport = usb_stor_BBB_transport;
1274                 ss->transport_reset = usb_stor_BBB_reset;
1275                 break;
1276         default:
1277                 printf("USB Storage Transport unknown / not yet implemented\n");
1278                 return 0;
1279                 break;
1280         }
1281
1282         /*
1283          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1284          * An optional interrupt is OK (necessary for CBI protocol).
1285          * We will ignore any others.
1286          */
1287         for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1288                 /* is it an BULK endpoint? */
1289                 if ((iface->ep_desc[i].bmAttributes &
1290                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1291                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1292                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1293                                         USB_ENDPOINT_NUMBER_MASK;
1294                         else
1295                                 ss->ep_out =
1296                                         iface->ep_desc[i].bEndpointAddress &
1297                                         USB_ENDPOINT_NUMBER_MASK;
1298                 }
1299
1300                 /* is it an interrupt endpoint? */
1301                 if ((iface->ep_desc[i].bmAttributes &
1302                     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1303                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1304                                 USB_ENDPOINT_NUMBER_MASK;
1305                         ss->irqinterval = iface->ep_desc[i].bInterval;
1306                 }
1307         }
1308         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1309                   ss->ep_in, ss->ep_out, ss->ep_int);
1310
1311         /* Do some basic sanity checks, and bail if we find a problem */
1312         if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1313             !ss->ep_in || !ss->ep_out ||
1314             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1315                 USB_STOR_PRINTF("Problems with device\n");
1316                 return 0;
1317         }
1318         /* set class specific stuff */
1319         /* We only handle certain protocols.  Currently, these are
1320          * the only ones.
1321          * The SFF8070 accepts the requests used in u-boot
1322          */
1323         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1324             ss->subclass != US_SC_8070) {
1325                 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1326                 return 0;
1327         }
1328         if (ss->ep_int) {
1329                 /* we had found an interrupt endpoint, prepare irq pipe
1330                  * set up the IRQ pipe and handler
1331                  */
1332                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1333                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1334                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1335                 dev->irq_handle = usb_stor_irq;
1336         }
1337         dev->privptr = (void *)ss;
1338         return 1;
1339 }
1340
1341 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1342                       block_dev_desc_t *dev_desc)
1343 {
1344         unsigned char perq, modi;
1345         unsigned long cap[2];
1346         unsigned long *capacity, *blksz;
1347         ccb *pccb = &usb_ccb;
1348
1349         /* for some reasons a couple of devices would not survive this reset */
1350         if (
1351             /* Sony USM256E */
1352             (dev->descriptor.idVendor == 0x054c &&
1353              dev->descriptor.idProduct == 0x019e)
1354             ||
1355             /* USB007 Mini-USB2 Flash Drive */
1356             (dev->descriptor.idVendor == 0x066f &&
1357              dev->descriptor.idProduct == 0x2010)
1358             ||
1359             /* SanDisk Corporation Cruzer Micro 20044318410546613953 */
1360             (dev->descriptor.idVendor == 0x0781 &&
1361              dev->descriptor.idProduct == 0x5151)
1362             ||
1363             /*
1364              * SanDisk Corporation U3 Cruzer Micro 1/4GB
1365              * Flash Drive 000016244373FFB4
1366              */
1367             (dev->descriptor.idVendor == 0x0781 &&
1368              dev->descriptor.idProduct == 0x5406)
1369             )
1370                 USB_STOR_PRINTF("usb_stor_get_info: skipping RESET..\n");
1371         else
1372                 ss->transport_reset(ss);
1373
1374         pccb->pdata = usb_stor_buf;
1375
1376         dev_desc->target = dev->devnum;
1377         pccb->lun = dev_desc->lun;
1378         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1379
1380         if (usb_inquiry(pccb, ss))
1381                 return -1;
1382
1383         perq = usb_stor_buf[0];
1384         modi = usb_stor_buf[1];
1385
1386         if ((perq & 0x1f) == 0x1f) {
1387                 /* skip unknown devices */
1388                 return 0;
1389         }
1390         if ((modi&0x80) == 0x80) {
1391                 /* drive is removable */
1392                 dev_desc->removable = 1;
1393         }
1394         memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
1395         memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
1396         memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
1397         dev_desc->vendor[8] = 0;
1398         dev_desc->product[16] = 0;
1399         dev_desc->revision[4] = 0;
1400 #ifdef CONFIG_USB_BIN_FIXUP
1401         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1402                       (uchar *)dev_desc->product);
1403 #endif /* CONFIG_USB_BIN_FIXUP */
1404         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1405                         usb_stor_buf[3]);
1406         if (usb_test_unit_ready(pccb, ss)) {
1407                 printf("Device NOT ready\n"
1408                        "   Request Sense returned %02X %02X %02X\n",
1409                        pccb->sense_buf[2], pccb->sense_buf[12],
1410                        pccb->sense_buf[13]);
1411                 if (dev_desc->removable == 1) {
1412                         dev_desc->type = perq;
1413                         return 1;
1414                 }
1415                 return 0;
1416         }
1417         pccb->pdata = (unsigned char *)&cap[0];
1418         memset(pccb->pdata, 0, 8);
1419         if (usb_read_capacity(pccb, ss) != 0) {
1420                 printf("READ_CAP ERROR\n");
1421                 cap[0] = 2880;
1422                 cap[1] = 0x200;
1423         }
1424         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0],
1425                         cap[1]);
1426 #if 0
1427         if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1428                 cap[0] >>= 16;
1429 #endif
1430         cap[0] = cpu_to_be32(cap[0]);
1431         cap[1] = cpu_to_be32(cap[1]);
1432
1433         /* this assumes bigendian! */
1434         cap[0] += 1;
1435         capacity = &cap[0];
1436         blksz = &cap[1];
1437         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",
1438                         *capacity, *blksz);
1439         dev_desc->lba = *capacity;
1440         dev_desc->blksz = *blksz;
1441         dev_desc->type = perq;
1442         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1443         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1444
1445         init_part(dev_desc);
1446
1447         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1448         return 1;
1449 }