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 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         printf(".");
 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 /*******************************************************************************
 208  * scan the usb and reports device info
 209  * to the user if mode = 1
 210  * returns current device or -1 if no
 211  */
 212 int usb_stor_scan(int mode)
 213 {
 214         unsigned char i;
 215         struct usb_device *dev;
 216
 217         /* GJ */
 218         memset(usb_stor_buf, 0, sizeof(usb_stor_buf));
 219
 220         if (mode == 1)
 221                 printf("       scanning bus for storage devices... ");
 222
 223         usb_disable_asynch(1); /* asynch transfer not allowed */
 224
 225         for (i = 0; i < USB_MAX_STOR_DEV; i++) {
 226                 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
 227                 usb_dev_desc[i].target = 0xff;
 228                 usb_dev_desc[i].if_type = IF_TYPE_USB;
 229                 usb_dev_desc[i].dev = i;
 230                 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
 231                 usb_dev_desc[i].block_read = usb_stor_read;
 232                 usb_dev_desc[i].block_write = usb_stor_write;
 233         }
 234
 235         usb_max_devs = 0;
 236         for (i = 0; i < USB_MAX_DEVICE; i++) {
 237                 dev = usb_get_dev_index(i); /* get device */
 238                 USB_STOR_PRINTF("i=%d\n", i);
 239                 if (dev == NULL)
 240                         break; /* no more devices avaiable */
 241
 242                 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) {
 243                         /* ok, it is a storage devices
 244                          * get info and fill it in
 245                          */
 246                         if (usb_stor_get_info(dev, &usb_stor[usb_max_devs],
 247                                                 &usb_dev_desc[usb_max_devs]) == 1)
 248                                 usb_max_devs++;
 249                 }
 250                 /* if storage device */
 251                 if (usb_max_devs == USB_MAX_STOR_DEV) {
 252                         printf("max USB Storage Device reached: %d stopping\n",
 253                                 usb_max_devs);
 254                         break;
 255                 }
 256         } /* for */
 257
 258         usb_disable_asynch(0); /* asynch transfer allowed */
 259         printf("%d Storage Device(s) found\n", usb_max_devs);
 260         if (usb_max_devs > 0)
 261                 return 0;
 262         return -1;
 263 }
 264
 265 static int usb_stor_irq(struct usb_device *dev)
 266 {
 267         struct us_data *us;
 268         us = (struct us_data *)dev->privptr;
 269
 270         if (us->ip_wanted)
 271                 us->ip_wanted = 0;
 272         return 0;
 273 }
 274
 275
 276 #ifdef  USB_STOR_DEBUG
 277
 278 static void usb_show_srb(ccb *pccb)
 279 {
 280         int i;
 281         printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
 282         for (i = 0; i < 12; i++)
 283                 printf("%02X ", pccb->cmd[i]);
 284         printf("\n");
 285 }
 286
 287 static void display_int_status(unsigned long tmp)
 288 {
 289         printf("Status: %s %s %s %s %s %s %s\n",
 290                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 291                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 292                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 293                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 294                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 295                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 296                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 297 }
 298 #endif
 299 /***********************************************************************
 300  * Data transfer routines
 301  ***********************************************************************/
 302
 303 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 304 {
 305         int max_size;
 306         int this_xfer;
 307         int result;
 308         int partial;
 309         int maxtry;
 310         int stat;
 311
 312         /* determine the maximum packet size for these transfers */
 313         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 314
 315         /* while we have data left to transfer */
 316         while (length) {
 317
 318                 /* calculate how long this will be -- maximum or a remainder */
 319                 this_xfer = length > max_size ? max_size : length;
 320                 length -= this_xfer;
 321
 322                 /* setup the retry counter */
 323                 maxtry = 10;
 324
 325                 /* set up the transfer loop */
 326                 do {
 327                         /* transfer the data */
 328                         USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
 329                                   (unsigned int)buf, this_xfer, 11 - maxtry);
 330                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 331                                               this_xfer, &partial,
 332                                               USB_CNTL_TIMEOUT * 5);
 333                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
 334                                   result, partial, this_xfer);
 335                         if (us->pusb_dev->status != 0) {
 336                                 /* if we stall, we need to clear it before
 337                                  * we go on
 338                                  */
 339 #ifdef USB_STOR_DEBUG
 340                                 display_int_status(us->pusb_dev->status);
 341 #endif
 342                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 343                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
 344                                         stat = us->pusb_dev->status;
 345                                         usb_clear_halt(us->pusb_dev, pipe);
 346                                         us->pusb_dev->status = stat;
 347                                         if (this_xfer == partial) {
 348                                                 USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n", us->pusb_dev->status);
 349                                                 return 0;
 350                                         }
 351                                         else
 352                                                 return result;
 353                                 }
 354                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 355                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
 356                                         return result;
 357                                 }
 358                                 USB_STOR_PRINTF("bulk transferred with error");
 359                                 if (this_xfer == partial) {
 360                                         USB_STOR_PRINTF(" %d, but data ok\n",
 361                                                         us->pusb_dev->status);
 362                                         return 0;
 363                                 }
 364                                 /* if our try counter reaches 0, bail out */
 365                                         USB_STOR_PRINTF(" %d, data %d\n",
 366                                                 us->pusb_dev->status, partial);
 367                                 if (!maxtry--)
 368                                                 return result;
 369                         }
 370                         /* update to show what data was transferred */
 371                         this_xfer -= partial;
 372                         buf += partial;
 373                         /* continue until this transfer is done */
 374                 } while (this_xfer);
 375         }
 376
 377         /* if we get here, we're done and successful */
 378         return 0;
 379 }
 380
 381 static int usb_stor_BBB_reset(struct us_data *us)
 382 {
 383         int result;
 384         unsigned int pipe;
 385
 386         /*
 387          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 388          *
 389          * For Reset Recovery the host shall issue in the following order:
 390          * a) a Bulk-Only Mass Storage Reset
 391          * b) a Clear Feature HALT to the Bulk-In endpoint
 392          * c) a Clear Feature HALT to the Bulk-Out endpoint
 393          *
 394          * This is done in 3 steps.
 395          *
 396          * If the reset doesn't succeed, the device should be port reset.
 397          *
 398          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 399          */
 400         USB_STOR_PRINTF("BBB_reset\n");
 401         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 402                                  US_BBB_RESET,
 403                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 404                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5);
 405
 406         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 407                 USB_STOR_PRINTF("RESET:stall\n");
 408                 return -1;
 409         }
 410
 411         /* long wait for reset */
 412         wait_ms(150);
 413         USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n", result,
 414                         us->pusb_dev->status);
 415         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 416         result = usb_clear_halt(us->pusb_dev, pipe);
 417         /* long wait for reset */
 418         wait_ms(150);
 419         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n",
 420                         result, us->pusb_dev->status);
 421         /* long wait for reset */
 422         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 423         result = usb_clear_halt(us->pusb_dev, pipe);
 424         wait_ms(150);
 425         USB_STOR_PRINTF("BBB_reset result %d: status %X"
 426                         " clearing OUT endpoint\n", result,
 427                         us->pusb_dev->status);
 428         USB_STOR_PRINTF("BBB_reset done\n");
 429         return 0;
 430 }
 431
 432 /* FIXME: this reset function doesn't really reset the port, and it
 433  * should. Actually it should probably do what it's doing here, and
 434  * reset the port physically
 435  */
 436 static int usb_stor_CB_reset(struct us_data *us)
 437 {
 438         unsigned char cmd[12];
 439         int result;
 440
 441         USB_STOR_PRINTF("CB_reset\n");
 442         memset(cmd, 0xff, sizeof(cmd));
 443         cmd[0] = SCSI_SEND_DIAG;
 444         cmd[1] = 4;
 445         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 446                                  US_CBI_ADSC,
 447                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 448                                  0, us->ifnum, cmd, sizeof(cmd),
 449                                  USB_CNTL_TIMEOUT * 5);
 450
 451         /* long wait for reset */
 452         wait_ms(1500);
 453         USB_STOR_PRINTF("CB_reset result %d: status %X"
 454                         " clearing endpoint halt\n", result,
 455                         us->pusb_dev->status);
 456         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 457         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 458
 459         USB_STOR_PRINTF("CB_reset done\n");
 460         return 0;
 461 }
 462
 463 /*
 464  * Set up the command for a BBB device. Note that the actual SCSI
 465  * command is copied into cbw.CBWCDB.
 466  */
 467 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 468 {
 469         int result;
 470         int actlen;
 471         int dir_in;
 472         unsigned int pipe;
 473         umass_bbb_cbw_t cbw;
 474
 475         dir_in = US_DIRECTION(srb->cmd[0]);
 476
 477 #ifdef BBB_COMDAT_TRACE
 478         printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n",
 479                 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
 480                 srb->pdata);
 481         if (srb->cmdlen) {
 482                 for (result = 0; result < srb->cmdlen; result++)
 483                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 484                 printf("\n");
 485         }
 486 #endif
 487         /* sanity checks */
 488         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 489                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
 490                 return -1;
 491         }
 492
 493         /* always OUT to the ep */
 494         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 495
 496         cbw.dCBWSignature = cpu_to_le32(CBWSIGNATURE);
 497         cbw.dCBWTag = cpu_to_le32(CBWTag++);
 498         cbw.dCBWDataTransferLength = cpu_to_le32(srb->datalen);
 499         cbw.bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
 500         cbw.bCBWLUN = srb->lun;
 501         cbw.bCDBLength = srb->cmdlen;
 502         /* copy the command data into the CBW command data buffer */
 503         /* DST SRC LEN!!! */
 504         memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen);
 505         result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE,
 506                               &actlen, USB_CNTL_TIMEOUT * 5);
 507         if (result < 0)
 508                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 509         return result;
 510 }
 511
 512 /* FIXME: we also need a CBI_command which sets up the completion
 513  * interrupt, and waits for it
 514  */
 515 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 516 {
 517         int result = 0;
 518         int dir_in, retry;
 519         unsigned int pipe;
 520         unsigned long status;
 521
 522         retry = 5;
 523         dir_in = US_DIRECTION(srb->cmd[0]);
 524
 525         if (dir_in)
 526                 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 527         else
 528                 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 529
 530         while (retry--) {
 531                 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry);
 532 #ifdef USB_STOR_DEBUG
 533                 usb_show_srb(srb);
 534 #endif
 535                 /* let's send the command via the control pipe */
 536                 result = usb_control_msg(us->pusb_dev,
 537                                          usb_sndctrlpipe(us->pusb_dev , 0),
 538                                          US_CBI_ADSC,
 539                                          USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 540                                          0, us->ifnum,
 541                                          srb->cmd, srb->cmdlen,
 542                                          USB_CNTL_TIMEOUT * 5);
 543                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
 544                                 " status %X\n", result, us->pusb_dev->status);
 545                 /* check the return code for the command */
 546                 if (result < 0) {
 547                         if (us->pusb_dev->status & USB_ST_STALLED) {
 548                                 status = us->pusb_dev->status;
 549                                 USB_STOR_PRINTF(" stall during command found,"
 550                                                 " clear pipe\n");
 551                                 usb_clear_halt(us->pusb_dev,
 552                                               usb_sndctrlpipe(us->pusb_dev, 0));
 553                                 us->pusb_dev->status = status;
 554                         }
 555                         USB_STOR_PRINTF(" error during command %02X"
 556                                         " Stat = %X\n", srb->cmd[0],
 557                                         us->pusb_dev->status);
 558                         return result;
 559                 }
 560                 /* transfer the data payload for this command, if one exists*/
 561
 562                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
 563                                 " direction is %s to go 0x%lx\n", result,
 564                                 dir_in ? "IN" : "OUT", srb->datalen);
 565                 if (srb->datalen) {
 566                         result = us_one_transfer(us, pipe, (char *)srb->pdata,
 567                                                  srb->datalen);
 568                         USB_STOR_PRINTF("CBI attempted to transfer data,"
 569                                         " result is %d status %lX, len %d\n",
 570                                         result, us->pusb_dev->status,
 571                                         us->pusb_dev->act_len);
 572                         if (!(us->pusb_dev->status & USB_ST_NAK_REC))
 573                                 break;
 574                 } /* if (srb->datalen) */
 575                 else
 576                         break;
 577         }
 578         /* return result */
 579
 580         return result;
 581 }
 582
 583
 584 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 585 {
 586         int timeout;
 587
 588         us->ip_wanted = 1;
 589         submit_int_msg(us->pusb_dev, us->irqpipe,
 590                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 591         timeout = 1000;
 592         while (timeout--) {
 593                 if ((volatile int *) us->ip_wanted == 0)
 594                         break;
 595                 wait_ms(10);
 596         }
 597         if (us->ip_wanted) {
 598                 printf("        Did not get interrupt on CBI\n");
 599                 us->ip_wanted = 0;
 600                 return USB_STOR_TRANSPORT_ERROR;
 601         }
 602         USB_STOR_PRINTF
 603                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
 604                  us->ip_data, us->pusb_dev->irq_act_len,
 605                  us->pusb_dev->irq_status);
 606         /* UFI gives us ASC and ASCQ, like a request sense */
 607         if (us->subclass == US_SC_UFI) {
 608                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 609                     srb->cmd[0] == SCSI_INQUIRY)
 610                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 611                 else if (us->ip_data)
 612                         return USB_STOR_TRANSPORT_FAILED;
 613                 else
 614                         return USB_STOR_TRANSPORT_GOOD;
 615         }
 616         /* otherwise, we interpret the data normally */
 617         switch (us->ip_data) {
 618         case 0x0001:
 619                 return USB_STOR_TRANSPORT_GOOD;
 620         case 0x0002:
 621                 return USB_STOR_TRANSPORT_FAILED;
 622         default:
 623                 return USB_STOR_TRANSPORT_ERROR;
 624         }                       /* switch */
 625         return USB_STOR_TRANSPORT_ERROR;
 626 }
 627
 628 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 629 #define USB_TRANSPORT_NOT_READY_RETRY 10
 630
 631 /* clear a stall on an endpoint - special for BBB devices */
 632 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 633 {
 634         int result;
 635
 636         /* ENDPOINT_HALT = 0, so set value to 0 */
 637         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 638                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 639                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5);
 640         return result;
 641 }
 642
 643 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 644 {
 645         int result, retry;
 646         int dir_in;
 647         int actlen, data_actlen;
 648         unsigned int pipe, pipein, pipeout;
 649         umass_bbb_csw_t csw;
 650 #ifdef BBB_XPORT_TRACE
 651         unsigned char *ptr;
 652         int index;
 653 #endif
 654
 655         dir_in = US_DIRECTION(srb->cmd[0]);
 656
 657         /* COMMAND phase */
 658         USB_STOR_PRINTF("COMMAND phase\n");
 659         result = usb_stor_BBB_comdat(srb, us);
 660         if (result < 0) {
 661                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
 662                         us->pusb_dev->status);
 663                 usb_stor_BBB_reset(us);
 664                 return USB_STOR_TRANSPORT_FAILED;
 665         }
 666         wait_ms(5);
 667         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 668         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 669         /* DATA phase + error handling */
 670         data_actlen = 0;
 671         /* no data, go immediately to the STATUS phase */
 672         if (srb->datalen == 0)
 673                 goto st;
 674         USB_STOR_PRINTF("DATA phase\n");
 675         if (dir_in)
 676                 pipe = pipein;
 677         else
 678                 pipe = pipeout;
 679         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
 680                               &data_actlen, USB_CNTL_TIMEOUT * 5);
 681         /* special handling of STALL in DATA phase */
 682         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 683                 USB_STOR_PRINTF("DATA:stall\n");
 684                 /* clear the STALL on the endpoint */
 685                 result = usb_stor_BBB_clear_endpt_stall(us,
 686                                         dir_in ? us->ep_in : us->ep_out);
 687                 if (result >= 0)
 688                         /* continue on to STATUS phase */
 689                         goto st;
 690         }
 691         if (result < 0) {
 692                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 693                         us->pusb_dev->status);
 694                 usb_stor_BBB_reset(us);
 695                 return USB_STOR_TRANSPORT_FAILED;
 696         }
 697 #ifdef BBB_XPORT_TRACE
 698         for (index = 0; index < data_actlen; index++)
 699                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 700         printf("\n");
 701 #endif
 702         /* STATUS phase + error handling */
 703 st:
 704         retry = 0;
 705 again:
 706         USB_STOR_PRINTF("STATUS phase\n");
 707         result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE,
 708                                 &actlen, USB_CNTL_TIMEOUT*5);
 709
 710         /* special handling of STALL in STATUS phase */
 711         if ((result < 0) && (retry < 1) &&
 712             (us->pusb_dev->status & USB_ST_STALLED)) {
 713                 USB_STOR_PRINTF("STATUS:stall\n");
 714                 /* clear the STALL on the endpoint */
 715                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 716                 if (result >= 0 && (retry++ < 1))
 717                         /* do a retry */
 718                         goto again;
 719         }
 720         if (result < 0) {
 721                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 722                         us->pusb_dev->status);
 723                 usb_stor_BBB_reset(us);
 724                 return USB_STOR_TRANSPORT_FAILED;
 725         }
 726 #ifdef BBB_XPORT_TRACE
 727         ptr = (unsigned char *)&csw;
 728         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 729                 printf("ptr[%d] %#x ", index, ptr[index]);
 730         printf("\n");
 731 #endif
 732         /* misuse pipe to get the residue */
 733         pipe = le32_to_cpu(csw.dCSWDataResidue);
 734         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 735                 pipe = srb->datalen - data_actlen;
 736         if (CSWSIGNATURE != le32_to_cpu(csw.dCSWSignature)) {
 737                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
 738                 usb_stor_BBB_reset(us);
 739                 return USB_STOR_TRANSPORT_FAILED;
 740         } else if ((CBWTag - 1) != le32_to_cpu(csw.dCSWTag)) {
 741                 USB_STOR_PRINTF("!Tag\n");
 742                 usb_stor_BBB_reset(us);
 743                 return USB_STOR_TRANSPORT_FAILED;
 744         } else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
 745                 USB_STOR_PRINTF(">PHASE\n");
 746                 usb_stor_BBB_reset(us);
 747                 return USB_STOR_TRANSPORT_FAILED;
 748         } else if (csw.bCSWStatus == CSWSTATUS_PHASE) {
 749                 USB_STOR_PRINTF("=PHASE\n");
 750                 usb_stor_BBB_reset(us);
 751                 return USB_STOR_TRANSPORT_FAILED;
 752         } else if (data_actlen > srb->datalen) {
 753                 USB_STOR_PRINTF("transferred %dB instead of %dB\n",
 754                         data_actlen, srb->datalen);
 755                 return USB_STOR_TRANSPORT_FAILED;
 756         } else if (csw.bCSWStatus == CSWSTATUS_FAILED) {
 757                 USB_STOR_PRINTF("FAILED\n");
 758                 return USB_STOR_TRANSPORT_FAILED;
 759         }
 760
 761         return result;
 762 }
 763
 764 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 765 {
 766         int result, status;
 767         ccb *psrb;
 768         ccb reqsrb;
 769         int retry, notready;
 770
 771         psrb = &reqsrb;
 772         status = USB_STOR_TRANSPORT_GOOD;
 773         retry = 0;
 774         notready = 0;
 775         /* issue the command */
 776 do_retry:
 777         result = usb_stor_CB_comdat(srb, us);
 778         USB_STOR_PRINTF("command / Data returned %d, status %X\n",
 779                         result, us->pusb_dev->status);
 780         /* if this is an CBI Protocol, get IRQ */
 781         if (us->protocol == US_PR_CBI) {
 782                 status = usb_stor_CBI_get_status(srb, us);
 783                 /* if the status is error, report it */
 784                 if (status == USB_STOR_TRANSPORT_ERROR) {
 785                         USB_STOR_PRINTF(" USB CBI Command Error\n");
 786                         return status;
 787                 }
 788                 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
 789                 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
 790                 if (!us->ip_data) {
 791                         /* if the status is good, report it */
 792                         if (status == USB_STOR_TRANSPORT_GOOD) {
 793                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
 794                                 return status;
 795                         }
 796                 }
 797         }
 798         /* do we have to issue an auto request? */
 799         /* HERE we have to check the result */
 800         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 801                 USB_STOR_PRINTF("ERROR %X\n", us->pusb_dev->status);
 802                 us->transport_reset(us);
 803                 return USB_STOR_TRANSPORT_ERROR;
 804         }
 805         if ((us->protocol == US_PR_CBI) &&
 806             ((srb->cmd[0] == SCSI_REQ_SENSE) ||
 807             (srb->cmd[0] == SCSI_INQUIRY))) {
 808                 /* do not issue an autorequest after request sense */
 809                 USB_STOR_PRINTF("No auto request and good\n");
 810                 return USB_STOR_TRANSPORT_GOOD;
 811         }
 812         /* issue an request_sense */
 813         memset(&psrb->cmd[0], 0, 12);
 814         psrb->cmd[0] = SCSI_REQ_SENSE;
 815         psrb->cmd[1] = srb->lun << 5;
 816         psrb->cmd[4] = 18;
 817         psrb->datalen = 18;
 818         psrb->pdata = &srb->sense_buf[0];
 819         psrb->cmdlen = 12;
 820         /* issue the command */
 821         result = usb_stor_CB_comdat(psrb, us);
 822         USB_STOR_PRINTF("auto request returned %d\n", result);
 823         /* if this is an CBI Protocol, get IRQ */
 824         if (us->protocol == US_PR_CBI)
 825                 status = usb_stor_CBI_get_status(psrb, us);
 826
 827         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 828                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n",
 829                                 us->pusb_dev->status);
 830                 return USB_STOR_TRANSPORT_ERROR;
 831         }
 832         USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 833                         srb->sense_buf[0], srb->sense_buf[2],
 834                         srb->sense_buf[12], srb->sense_buf[13]);
 835         /* Check the auto request result */
 836         if ((srb->sense_buf[2] == 0) &&
 837             (srb->sense_buf[12] == 0) &&
 838             (srb->sense_buf[13] == 0)) {
 839                 /* ok, no sense */
 840                 return USB_STOR_TRANSPORT_GOOD;
 841         }
 842
 843         /* Check the auto request result */
 844         switch (srb->sense_buf[2]) {
 845         case 0x01:
 846                 /* Recovered Error */
 847                 return USB_STOR_TRANSPORT_GOOD;
 848                 break;
 849         case 0x02:
 850                 /* Not Ready */
 851                 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 852                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 853                                " 0x%02X (NOT READY)\n", srb->cmd[0],
 854                                 srb->sense_buf[0], srb->sense_buf[2],
 855                                 srb->sense_buf[12], srb->sense_buf[13]);
 856                         return USB_STOR_TRANSPORT_FAILED;
 857                 } else {
 858                         wait_ms(100);
 859                         goto do_retry;
 860                 }
 861                 break;
 862         default:
 863                 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 864                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 865                                " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
 866                                 srb->sense_buf[2], srb->sense_buf[12],
 867                                 srb->sense_buf[13]);
 868                         return USB_STOR_TRANSPORT_FAILED;
 869                 } else
 870                         goto do_retry;
 871                 break;
 872         }
 873         return USB_STOR_TRANSPORT_FAILED;
 874 }
 875
 876
 877 static int usb_inquiry(ccb *srb, struct us_data *ss)
 878 {
 879         int retry, i;
 880         retry = 5;
 881         do {
 882                 memset(&srb->cmd[0], 0, 12);
 883                 srb->cmd[0] = SCSI_INQUIRY;
 884                 srb->cmd[4] = 36;
 885                 srb->datalen = 36;
 886                 srb->cmdlen = 12;
 887                 i = ss->transport(srb, ss);
 888                 USB_STOR_PRINTF("inquiry returns %d\n", i);
 889                 if (i == 0)
 890                         break;
 891         } while (--retry);
 892
 893         if (!retry) {
 894                 printf("error in inquiry\n");
 895                 return -1;
 896         }
 897         return 0;
 898 }
 899
 900 static int usb_request_sense(ccb *srb, struct us_data *ss)
 901 {
 902         char *ptr;
 903
 904         ptr = (char *)srb->pdata;
 905         memset(&srb->cmd[0], 0, 12);
 906         srb->cmd[0] = SCSI_REQ_SENSE;
 907         srb->cmd[4] = 18;
 908         srb->datalen = 18;
 909         srb->pdata = &srb->sense_buf[0];
 910         srb->cmdlen = 12;
 911         ss->transport(srb, ss);
 912         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",
 913                         srb->sense_buf[2], srb->sense_buf[12],
 914                         srb->sense_buf[13]);
 915         srb->pdata = (uchar *)ptr;
 916         return 0;
 917 }
 918
 919 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
 920 {
 921         int retries = 10;
 922
 923         do {
 924                 memset(&srb->cmd[0], 0, 12);
 925                 srb->cmd[0] = SCSI_TST_U_RDY;
 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->datalen = 8;
 946                 srb->cmdlen = 12;
 947                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
 948                         return 0;
 949         } while (retry--);
 950
 951         return -1;
 952 }
 953
 954 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
 955                        unsigned short blocks)
 956 {
 957         memset(&srb->cmd[0], 0, 12);
 958         srb->cmd[0] = SCSI_READ10;
 959         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
 960         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
 961         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
 962         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
 963         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
 964         srb->cmd[8] = (unsigned char) blocks & 0xff;
 965         srb->cmdlen = 12;
 966         USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks);
 967         return ss->transport(srb, ss);
 968 }
 969
 970 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
 971                         unsigned short blocks)
 972 {
 973         memset(&srb->cmd[0], 0, 12);
 974         srb->cmd[0] = SCSI_WRITE10;
 975         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
 976         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
 977         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
 978         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
 979         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
 980         srb->cmd[8] = (unsigned char) blocks & 0xff;
 981         srb->cmdlen = 12;
 982         USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks);
 983         return ss->transport(srb, ss);
 984 }
 985
 986
 987 #ifdef CONFIG_USB_BIN_FIXUP
 988 /*
 989  * Some USB storage devices queried for SCSI identification data respond with
 990  * binary strings, which if output to the console freeze the terminal. The
 991  * workaround is to modify the vendor and product strings read from such
 992  * device with proper values (as reported by 'usb info').
 993  *
 994  * Vendor and product length limits are taken from the definition of
 995  * block_dev_desc_t in include/part.h.
 996  */
 997 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
 998                                 unsigned char vendor[],
 999                                 unsigned char product[]) {
1000         const unsigned char max_vendor_len = 40;
1001         const unsigned char max_product_len = 20;
1002         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1003                 strncpy((char *)vendor, "SMSC", max_vendor_len);
1004                 strncpy((char *)product, "Flash Media Cntrller",
1005                         max_product_len);
1006         }
1007 }
1008 #endif /* CONFIG_USB_BIN_FIXUP */
1009
1010 #define USB_MAX_READ_BLK 20
1011
1012 unsigned long usb_stor_read(int device, unsigned long blknr,
1013                             unsigned long blkcnt, void *buffer)
1014 {
1015         unsigned long start, blks, buf_addr;
1016         unsigned short smallblks;
1017         struct usb_device *dev;
1018         int retry, i;
1019         ccb *srb = &usb_ccb;
1020
1021         if (blkcnt == 0)
1022                 return 0;
1023
1024         device &= 0xff;
1025         /* Setup  device */
1026         USB_STOR_PRINTF("\nusb_read: dev %d \n", device);
1027         dev = NULL;
1028         for (i = 0; i < USB_MAX_DEVICE; i++) {
1029                 dev = usb_get_dev_index(i);
1030                 if (dev == NULL)
1031                         return 0;
1032                 if (dev->devnum == usb_dev_desc[device].target)
1033                         break;
1034         }
1035
1036         usb_disable_asynch(1); /* asynch transfer not allowed */
1037         srb->lun = usb_dev_desc[device].lun;
1038         buf_addr = (unsigned long)buffer;
1039         start = blknr;
1040         blks = blkcnt;
1041         if (usb_test_unit_ready(srb, (struct us_data *)dev->privptr)) {
1042                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1043                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1044                        srb->sense_buf[13]);
1045                 return 0;
1046         }
1047
1048         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx"
1049                         " buffer %lx\n", device, start, blks, buf_addr);
1050
1051         do {
1052                 /* XXX need some comment here */
1053                 retry = 2;
1054                 srb->pdata = (unsigned char *)buf_addr;
1055                 if (blks > USB_MAX_READ_BLK)
1056                         smallblks = USB_MAX_READ_BLK;
1057                 else
1058                         smallblks = (unsigned short) blks;
1059 retry_it:
1060                 if (smallblks == USB_MAX_READ_BLK)
1061                         usb_show_progress();
1062                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1063                 srb->pdata = (unsigned char *)buf_addr;
1064                 if (usb_read_10(srb, (struct us_data *)dev->privptr, start,
1065                     smallblks)) {
1066                         USB_STOR_PRINTF("Read ERROR\n");
1067                         usb_request_sense(srb, (struct us_data *)dev->privptr);
1068                         if (retry--)
1069                                 goto retry_it;
1070                         blkcnt -= blks;
1071                         break;
1072                 }
1073                 start += smallblks;
1074                 blks -= smallblks;
1075                 buf_addr += srb->datalen;
1076         } while (blks != 0);
1077
1078         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",
1079                         start, smallblks, buf_addr);
1080
1081         usb_disable_asynch(0); /* asynch transfer allowed */
1082         if (blkcnt >= USB_MAX_READ_BLK)
1083                 printf("\n");
1084         return blkcnt;
1085 }
1086
1087 #define USB_MAX_WRITE_BLK 20
1088
1089 unsigned long usb_stor_write(int device, unsigned long blknr,
1090                                 unsigned long blkcnt, const void *buffer)
1091 {
1092         unsigned long start, blks, buf_addr;
1093         unsigned short smallblks;
1094         struct usb_device *dev;
1095         int retry, i;
1096         ccb *srb = &usb_ccb;
1097
1098         if (blkcnt == 0)
1099                 return 0;
1100
1101         device &= 0xff;
1102         /* Setup  device */
1103         USB_STOR_PRINTF("\nusb_write: dev %d \n", device);
1104         dev = NULL;
1105         for (i = 0; i < USB_MAX_DEVICE; i++) {
1106                 dev = usb_get_dev_index(i);
1107                 if (dev == NULL)
1108                         return 0;
1109                 if (dev->devnum == usb_dev_desc[device].target)
1110                         break;
1111         }
1112
1113         usb_disable_asynch(1); /* asynch transfer not allowed */
1114
1115         srb->lun = usb_dev_desc[device].lun;
1116         buf_addr = (unsigned long)buffer;
1117         start = blknr;
1118         blks = blkcnt;
1119         if (usb_test_unit_ready(srb, (struct us_data *)dev->privptr)) {
1120                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1121                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1122                         srb->sense_buf[13]);
1123                 return 0;
1124         }
1125
1126         USB_STOR_PRINTF("\nusb_write: dev %d startblk %lx, blccnt %lx"
1127                         " buffer %lx\n", device, start, blks, buf_addr);
1128
1129         do {
1130                 /* If write fails retry for max retry count else
1131                  * return with number of blocks written successfully.
1132                  */
1133                 retry = 2;
1134                 srb->pdata = (unsigned char *)buf_addr;
1135                 if (blks > USB_MAX_WRITE_BLK)
1136                         smallblks = USB_MAX_WRITE_BLK;
1137                 else
1138                         smallblks = (unsigned short) blks;
1139 retry_it:
1140                 if (smallblks == USB_MAX_WRITE_BLK)
1141                         usb_show_progress();
1142                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1143                 srb->pdata = (unsigned char *)buf_addr;
1144                 if (usb_write_10(srb, (struct us_data *)dev->privptr, start,
1145                     smallblks)) {
1146                         USB_STOR_PRINTF("Write ERROR\n");
1147                         usb_request_sense(srb, (struct us_data *)dev->privptr);
1148                         if (retry--)
1149                                 goto retry_it;
1150                         blkcnt -= blks;
1151                         break;
1152                 }
1153                 start += smallblks;
1154                 blks -= smallblks;
1155                 buf_addr += srb->datalen;
1156         } while (blks != 0);
1157
1158         USB_STOR_PRINTF("usb_write: end startblk %lx, blccnt %x buffer %lx\n",
1159                         start, smallblks, buf_addr);
1160
1161         usb_disable_asynch(0); /* asynch transfer allowed */
1162         if (blkcnt >= USB_MAX_WRITE_BLK)
1163                 printf("\n");
1164         return blkcnt;
1165
1166 }
1167
1168 /* Probe to see if a new device is actually a Storage device */
1169 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1170                       struct us_data *ss)
1171 {
1172         struct usb_interface *iface;
1173         int i;
1174         unsigned int flags = 0;
1175
1176         int protocol = 0;
1177         int subclass = 0;
1178
1179         /* let's examine the device now */
1180         iface = &dev->config.if_desc[ifnum];
1181
1182 #if 0
1183         /* this is the place to patch some storage devices */
1184         USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1185                         dev->descriptor.idProduct);
1186
1187         if ((dev->descriptor.idVendor) == 0x066b &&
1188             (dev->descriptor.idProduct) == 0x0103) {
1189                 USB_STOR_PRINTF("patched for E-USB\n");
1190                 protocol = US_PR_CB;
1191                 subclass = US_SC_UFI;       /* an assumption */
1192         }
1193 #endif
1194
1195         if (dev->descriptor.bDeviceClass != 0 ||
1196                         iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1197                         iface->desc.bInterfaceSubClass < US_SC_MIN ||
1198                         iface->desc.bInterfaceSubClass > US_SC_MAX) {
1199                 /* if it's not a mass storage, we go no further */
1200                 return 0;
1201         }
1202
1203         memset(ss, 0, sizeof(struct us_data));
1204
1205         /* At this point, we know we've got a live one */
1206         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1207
1208         /* Initialize the us_data structure with some useful info */
1209         ss->flags = flags;
1210         ss->ifnum = ifnum;
1211         ss->pusb_dev = dev;
1212         ss->attention_done = 0;
1213
1214         /* If the device has subclass and protocol, then use that.  Otherwise,
1215          * take data from the specific interface.
1216          */
1217         if (subclass) {
1218                 ss->subclass = subclass;
1219                 ss->protocol = protocol;
1220         } else {
1221                 ss->subclass = iface->desc.bInterfaceSubClass;
1222                 ss->protocol = iface->desc.bInterfaceProtocol;
1223         }
1224
1225         /* set the handler pointers based on the protocol */
1226         USB_STOR_PRINTF("Transport: ");
1227         switch (ss->protocol) {
1228         case US_PR_CB:
1229                 USB_STOR_PRINTF("Control/Bulk\n");
1230                 ss->transport = usb_stor_CB_transport;
1231                 ss->transport_reset = usb_stor_CB_reset;
1232                 break;
1233
1234         case US_PR_CBI:
1235                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1236                 ss->transport = usb_stor_CB_transport;
1237                 ss->transport_reset = usb_stor_CB_reset;
1238                 break;
1239         case US_PR_BULK:
1240                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1241                 ss->transport = usb_stor_BBB_transport;
1242                 ss->transport_reset = usb_stor_BBB_reset;
1243                 break;
1244         default:
1245                 printf("USB Storage Transport unknown / not yet implemented\n");
1246                 return 0;
1247                 break;
1248         }
1249
1250         /*
1251          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1252          * An optional interrupt is OK (necessary for CBI protocol).
1253          * We will ignore any others.
1254          */
1255         for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1256                 /* is it an BULK endpoint? */
1257                 if ((iface->ep_desc[i].bmAttributes &
1258                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1259                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1260                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1261                                         USB_ENDPOINT_NUMBER_MASK;
1262                         else
1263                                 ss->ep_out =
1264                                         iface->ep_desc[i].bEndpointAddress &
1265                                         USB_ENDPOINT_NUMBER_MASK;
1266                 }
1267
1268                 /* is it an interrupt endpoint? */
1269                 if ((iface->ep_desc[i].bmAttributes &
1270                     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1271                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1272                                 USB_ENDPOINT_NUMBER_MASK;
1273                         ss->irqinterval = iface->ep_desc[i].bInterval;
1274                 }
1275         }
1276         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1277                   ss->ep_in, ss->ep_out, ss->ep_int);
1278
1279         /* Do some basic sanity checks, and bail if we find a problem */
1280         if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1281             !ss->ep_in || !ss->ep_out ||
1282             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1283                 USB_STOR_PRINTF("Problems with device\n");
1284                 return 0;
1285         }
1286         /* set class specific stuff */
1287         /* We only handle certain protocols.  Currently, these are
1288          * the only ones.
1289          * The SFF8070 accepts the requests used in u-boot
1290          */
1291         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1292             ss->subclass != US_SC_8070) {
1293                 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1294                 return 0;
1295         }
1296         if (ss->ep_int) {
1297                 /* we had found an interrupt endpoint, prepare irq pipe
1298                  * set up the IRQ pipe and handler
1299                  */
1300                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1301                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1302                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1303                 dev->irq_handle = usb_stor_irq;
1304         }
1305         dev->privptr = (void *)ss;
1306         return 1;
1307 }
1308
1309 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1310                       block_dev_desc_t *dev_desc)
1311 {
1312         unsigned char perq, modi;
1313         unsigned long cap[2];
1314         unsigned long *capacity, *blksz;
1315         ccb *pccb = &usb_ccb;
1316
1317         /* for some reasons a couple of devices would not survive this reset */
1318         if (
1319             /* Sony USM256E */
1320             (dev->descriptor.idVendor == 0x054c &&
1321              dev->descriptor.idProduct == 0x019e)
1322             ||
1323             /* USB007 Mini-USB2 Flash Drive */
1324             (dev->descriptor.idVendor == 0x066f &&
1325              dev->descriptor.idProduct == 0x2010)
1326             ||
1327             /* SanDisk Corporation Cruzer Micro 20044318410546613953 */
1328             (dev->descriptor.idVendor == 0x0781 &&
1329              dev->descriptor.idProduct == 0x5151)
1330             ||
1331             /*
1332              * SanDisk Corporation U3 Cruzer Micro 1/4GB
1333              * Flash Drive 000016244373FFB4
1334              */
1335             (dev->descriptor.idVendor == 0x0781 &&
1336              dev->descriptor.idProduct == 0x5406)
1337             )
1338                 USB_STOR_PRINTF("usb_stor_get_info: skipping RESET..\n");
1339         else
1340                 ss->transport_reset(ss);
1341
1342         pccb->pdata = usb_stor_buf;
1343
1344         dev_desc->target = dev->devnum;
1345         pccb->lun = dev_desc->lun;
1346         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1347
1348         if (usb_inquiry(pccb, ss))
1349                 return -1;
1350
1351         perq = usb_stor_buf[0];
1352         modi = usb_stor_buf[1];
1353
1354         if ((perq & 0x1f) == 0x1f) {
1355                 /* skip unknown devices */
1356                 return 0;
1357         }
1358         if ((modi&0x80) == 0x80) {
1359                 /* drive is removable */
1360                 dev_desc->removable = 1;
1361         }
1362         memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
1363         memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
1364         memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
1365         dev_desc->vendor[8] = 0;
1366         dev_desc->product[16] = 0;
1367         dev_desc->revision[4] = 0;
1368 #ifdef CONFIG_USB_BIN_FIXUP
1369         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1370                       (uchar *)dev_desc->product);
1371 #endif /* CONFIG_USB_BIN_FIXUP */
1372         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1373                         usb_stor_buf[3]);
1374         if (usb_test_unit_ready(pccb, ss)) {
1375                 printf("Device NOT ready\n"
1376                        "   Request Sense returned %02X %02X %02X\n",
1377                        pccb->sense_buf[2], pccb->sense_buf[12],
1378                        pccb->sense_buf[13]);
1379                 if (dev_desc->removable == 1) {
1380                         dev_desc->type = perq;
1381                         return 1;
1382                 }
1383                 return 0;
1384         }
1385         pccb->pdata = (unsigned char *)&cap[0];
1386         memset(pccb->pdata, 0, 8);
1387         if (usb_read_capacity(pccb, ss) != 0) {
1388                 printf("READ_CAP ERROR\n");
1389                 cap[0] = 2880;
1390                 cap[1] = 0x200;
1391         }
1392         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0],
1393                         cap[1]);
1394 #if 0
1395         if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1396                 cap[0] >>= 16;
1397 #endif
1398         cap[0] = cpu_to_be32(cap[0]);
1399         cap[1] = cpu_to_be32(cap[1]);
1400
1401         /* this assumes bigendian! */
1402         cap[0] += 1;
1403         capacity = &cap[0];
1404         blksz = &cap[1];
1405         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",
1406                         *capacity, *blksz);
1407         dev_desc->lba = *capacity;
1408         dev_desc->blksz = *blksz;
1409         dev_desc->type = perq;
1410         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1411         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1412
1413         init_part(dev_desc);
1414
1415         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1416         return 1;
1417 }