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         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 /*******************************************************************************
 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].if_type = IF_TYPE_USB;
 228                 usb_dev_desc[i].dev = i;
 229                 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
 230                 usb_dev_desc[i].target = 0xff;
 231                 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
 232                 usb_dev_desc[i].block_read = usb_stor_read;
 233                 usb_dev_desc[i].block_write = usb_stor_write;
 234         }
 235
 236         usb_max_devs = 0;
 237         for (i = 0; i < USB_MAX_DEVICE; i++) {
 238                 dev = usb_get_dev_index(i); /* get device */
 239                 USB_STOR_PRINTF("i=%d\n", i);
 240                 if (dev == NULL)
 241                         break; /* no more devices avaiable */
 242
 243                 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) {
 244                         /* ok, it is a storage devices
 245                          * get info and fill it in
 246                          */
 247                         if (usb_stor_get_info(dev, &usb_stor[usb_max_devs],
 248                                                 &usb_dev_desc[usb_max_devs]) == 1)
 249                                 usb_max_devs++;
 250                 }
 251                 /* if storage device */
 252                 if (usb_max_devs == USB_MAX_STOR_DEV) {
 253                         printf("max USB Storage Device reached: %d stopping\n",
 254                                 usb_max_devs);
 255                         break;
 256                 }
 257         } /* for */
 258
 259         usb_disable_asynch(0); /* asynch transfer allowed */
 260         printf("%d Storage Device(s) found\n", usb_max_devs);
 261         if (usb_max_devs > 0)
 262                 return 0;
 263         return -1;
 264 }
 265
 266 static int usb_stor_irq(struct usb_device *dev)
 267 {
 268         struct us_data *us;
 269         us = (struct us_data *)dev->privptr;
 270
 271         if (us->ip_wanted)
 272                 us->ip_wanted = 0;
 273         return 0;
 274 }
 275
 276
 277 #ifdef  USB_STOR_DEBUG
 278
 279 static void usb_show_srb(ccb *pccb)
 280 {
 281         int i;
 282         printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
 283         for (i = 0; i < 12; i++)
 284                 printf("%02X ", pccb->cmd[i]);
 285         printf("\n");
 286 }
 287
 288 static void display_int_status(unsigned long tmp)
 289 {
 290         printf("Status: %s %s %s %s %s %s %s\n",
 291                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 292                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 293                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 294                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 295                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 296                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 297                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 298 }
 299 #endif
 300 /***********************************************************************
 301  * Data transfer routines
 302  ***********************************************************************/
 303
 304 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 305 {
 306         int max_size;
 307         int this_xfer;
 308         int result;
 309         int partial;
 310         int maxtry;
 311         int stat;
 312
 313         /* determine the maximum packet size for these transfers */
 314         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 315
 316         /* while we have data left to transfer */
 317         while (length) {
 318
 319                 /* calculate how long this will be -- maximum or a remainder */
 320                 this_xfer = length > max_size ? max_size : length;
 321                 length -= this_xfer;
 322
 323                 /* setup the retry counter */
 324                 maxtry = 10;
 325
 326                 /* set up the transfer loop */
 327                 do {
 328                         /* transfer the data */
 329                         USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
 330                                   (unsigned int)buf, this_xfer, 11 - maxtry);
 331                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 332                                               this_xfer, &partial,
 333                                               USB_CNTL_TIMEOUT * 5);
 334                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
 335                                   result, partial, this_xfer);
 336                         if (us->pusb_dev->status != 0) {
 337                                 /* if we stall, we need to clear it before
 338                                  * we go on
 339                                  */
 340 #ifdef USB_STOR_DEBUG
 341                                 display_int_status(us->pusb_dev->status);
 342 #endif
 343                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 344                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
 345                                         stat = us->pusb_dev->status;
 346                                         usb_clear_halt(us->pusb_dev, pipe);
 347                                         us->pusb_dev->status = stat;
 348                                         if (this_xfer == partial) {
 349                                                 USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n", us->pusb_dev->status);
 350                                                 return 0;
 351                                         }
 352                                         else
 353                                                 return result;
 354                                 }
 355                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 356                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
 357                                         return result;
 358                                 }
 359                                 USB_STOR_PRINTF("bulk transferred with error");
 360                                 if (this_xfer == partial) {
 361                                         USB_STOR_PRINTF(" %d, but data ok\n",
 362                                                         us->pusb_dev->status);
 363                                         return 0;
 364                                 }
 365                                 /* if our try counter reaches 0, bail out */
 366                                         USB_STOR_PRINTF(" %d, data %d\n",
 367                                                 us->pusb_dev->status, partial);
 368                                 if (!maxtry--)
 369                                                 return result;
 370                         }
 371                         /* update to show what data was transferred */
 372                         this_xfer -= partial;
 373                         buf += partial;
 374                         /* continue until this transfer is done */
 375                 } while (this_xfer);
 376         }
 377
 378         /* if we get here, we're done and successful */
 379         return 0;
 380 }
 381
 382 static int usb_stor_BBB_reset(struct us_data *us)
 383 {
 384         int result;
 385         unsigned int pipe;
 386
 387         /*
 388          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 389          *
 390          * For Reset Recovery the host shall issue in the following order:
 391          * a) a Bulk-Only Mass Storage Reset
 392          * b) a Clear Feature HALT to the Bulk-In endpoint
 393          * c) a Clear Feature HALT to the Bulk-Out endpoint
 394          *
 395          * This is done in 3 steps.
 396          *
 397          * If the reset doesn't succeed, the device should be port reset.
 398          *
 399          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 400          */
 401         USB_STOR_PRINTF("BBB_reset\n");
 402         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 403                                  US_BBB_RESET,
 404                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 405                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5);
 406
 407         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 408                 USB_STOR_PRINTF("RESET:stall\n");
 409                 return -1;
 410         }
 411
 412         /* long wait for reset */
 413         wait_ms(150);
 414         USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n", result,
 415                         us->pusb_dev->status);
 416         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 417         result = usb_clear_halt(us->pusb_dev, pipe);
 418         /* long wait for reset */
 419         wait_ms(150);
 420         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n",
 421                         result, us->pusb_dev->status);
 422         /* long wait for reset */
 423         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 424         result = usb_clear_halt(us->pusb_dev, pipe);
 425         wait_ms(150);
 426         USB_STOR_PRINTF("BBB_reset result %d: status %X"
 427                         " clearing OUT endpoint\n", result,
 428                         us->pusb_dev->status);
 429         USB_STOR_PRINTF("BBB_reset done\n");
 430         return 0;
 431 }
 432
 433 /* FIXME: this reset function doesn't really reset the port, and it
 434  * should. Actually it should probably do what it's doing here, and
 435  * reset the port physically
 436  */
 437 static int usb_stor_CB_reset(struct us_data *us)
 438 {
 439         unsigned char cmd[12];
 440         int result;
 441
 442         USB_STOR_PRINTF("CB_reset\n");
 443         memset(cmd, 0xff, sizeof(cmd));
 444         cmd[0] = SCSI_SEND_DIAG;
 445         cmd[1] = 4;
 446         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 447                                  US_CBI_ADSC,
 448                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 449                                  0, us->ifnum, cmd, sizeof(cmd),
 450                                  USB_CNTL_TIMEOUT * 5);
 451
 452         /* long wait for reset */
 453         wait_ms(1500);
 454         USB_STOR_PRINTF("CB_reset result %d: status %X"
 455                         " clearing endpoint halt\n", result,
 456                         us->pusb_dev->status);
 457         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 458         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 459
 460         USB_STOR_PRINTF("CB_reset done\n");
 461         return 0;
 462 }
 463
 464 /*
 465  * Set up the command for a BBB device. Note that the actual SCSI
 466  * command is copied into cbw.CBWCDB.
 467  */
 468 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 469 {
 470         int result;
 471         int actlen;
 472         int dir_in;
 473         unsigned int pipe;
 474         umass_bbb_cbw_t cbw;
 475
 476         dir_in = US_DIRECTION(srb->cmd[0]);
 477
 478 #ifdef BBB_COMDAT_TRACE
 479         printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n",
 480                 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
 481                 srb->pdata);
 482         if (srb->cmdlen) {
 483                 for (result = 0; result < srb->cmdlen; result++)
 484                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 485                 printf("\n");
 486         }
 487 #endif
 488         /* sanity checks */
 489         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 490                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
 491                 return -1;
 492         }
 493
 494         /* always OUT to the ep */
 495         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 496
 497         cbw.dCBWSignature = cpu_to_le32(CBWSIGNATURE);
 498         cbw.dCBWTag = cpu_to_le32(CBWTag++);
 499         cbw.dCBWDataTransferLength = cpu_to_le32(srb->datalen);
 500         cbw.bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
 501         cbw.bCBWLUN = srb->lun;
 502         cbw.bCDBLength = srb->cmdlen;
 503         /* copy the command data into the CBW command data buffer */
 504         /* DST SRC LEN!!! */
 505         memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen);
 506         result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE,
 507                               &actlen, USB_CNTL_TIMEOUT * 5);
 508         if (result < 0)
 509                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 510         return result;
 511 }
 512
 513 /* FIXME: we also need a CBI_command which sets up the completion
 514  * interrupt, and waits for it
 515  */
 516 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 517 {
 518         int result = 0;
 519         int dir_in, retry;
 520         unsigned int pipe;
 521         unsigned long status;
 522
 523         retry = 5;
 524         dir_in = US_DIRECTION(srb->cmd[0]);
 525
 526         if (dir_in)
 527                 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 528         else
 529                 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 530
 531         while (retry--) {
 532                 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry);
 533 #ifdef USB_STOR_DEBUG
 534                 usb_show_srb(srb);
 535 #endif
 536                 /* let's send the command via the control pipe */
 537                 result = usb_control_msg(us->pusb_dev,
 538                                          usb_sndctrlpipe(us->pusb_dev , 0),
 539                                          US_CBI_ADSC,
 540                                          USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 541                                          0, us->ifnum,
 542                                          srb->cmd, srb->cmdlen,
 543                                          USB_CNTL_TIMEOUT * 5);
 544                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
 545                                 " status %X\n", result, us->pusb_dev->status);
 546                 /* check the return code for the command */
 547                 if (result < 0) {
 548                         if (us->pusb_dev->status & USB_ST_STALLED) {
 549                                 status = us->pusb_dev->status;
 550                                 USB_STOR_PRINTF(" stall during command found,"
 551                                                 " clear pipe\n");
 552                                 usb_clear_halt(us->pusb_dev,
 553                                               usb_sndctrlpipe(us->pusb_dev, 0));
 554                                 us->pusb_dev->status = status;
 555                         }
 556                         USB_STOR_PRINTF(" error during command %02X"
 557                                         " Stat = %X\n", srb->cmd[0],
 558                                         us->pusb_dev->status);
 559                         return result;
 560                 }
 561                 /* transfer the data payload for this command, if one exists*/
 562
 563                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
 564                                 " direction is %s to go 0x%lx\n", result,
 565                                 dir_in ? "IN" : "OUT", srb->datalen);
 566                 if (srb->datalen) {
 567                         result = us_one_transfer(us, pipe, (char *)srb->pdata,
 568                                                  srb->datalen);
 569                         USB_STOR_PRINTF("CBI attempted to transfer data,"
 570                                         " result is %d status %lX, len %d\n",
 571                                         result, us->pusb_dev->status,
 572                                         us->pusb_dev->act_len);
 573                         if (!(us->pusb_dev->status & USB_ST_NAK_REC))
 574                                 break;
 575                 } /* if (srb->datalen) */
 576                 else
 577                         break;
 578         }
 579         /* return result */
 580
 581         return result;
 582 }
 583
 584
 585 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 586 {
 587         int timeout;
 588
 589         us->ip_wanted = 1;
 590         submit_int_msg(us->pusb_dev, us->irqpipe,
 591                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 592         timeout = 1000;
 593         while (timeout--) {
 594                 if ((volatile int *) us->ip_wanted == 0)
 595                         break;
 596                 wait_ms(10);
 597         }
 598         if (us->ip_wanted) {
 599                 printf("        Did not get interrupt on CBI\n");
 600                 us->ip_wanted = 0;
 601                 return USB_STOR_TRANSPORT_ERROR;
 602         }
 603         USB_STOR_PRINTF
 604                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
 605                  us->ip_data, us->pusb_dev->irq_act_len,
 606                  us->pusb_dev->irq_status);
 607         /* UFI gives us ASC and ASCQ, like a request sense */
 608         if (us->subclass == US_SC_UFI) {
 609                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 610                     srb->cmd[0] == SCSI_INQUIRY)
 611                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 612                 else if (us->ip_data)
 613                         return USB_STOR_TRANSPORT_FAILED;
 614                 else
 615                         return USB_STOR_TRANSPORT_GOOD;
 616         }
 617         /* otherwise, we interpret the data normally */
 618         switch (us->ip_data) {
 619         case 0x0001:
 620                 return USB_STOR_TRANSPORT_GOOD;
 621         case 0x0002:
 622                 return USB_STOR_TRANSPORT_FAILED;
 623         default:
 624                 return USB_STOR_TRANSPORT_ERROR;
 625         }                       /* switch */
 626         return USB_STOR_TRANSPORT_ERROR;
 627 }
 628
 629 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 630 #define USB_TRANSPORT_NOT_READY_RETRY 10
 631
 632 /* clear a stall on an endpoint - special for BBB devices */
 633 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 634 {
 635         int result;
 636
 637         /* ENDPOINT_HALT = 0, so set value to 0 */
 638         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 639                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 640                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5);
 641         return result;
 642 }
 643
 644 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 645 {
 646         int result, retry;
 647         int dir_in;
 648         int actlen, data_actlen;
 649         unsigned int pipe, pipein, pipeout;
 650         umass_bbb_csw_t csw;
 651 #ifdef BBB_XPORT_TRACE
 652         unsigned char *ptr;
 653         int index;
 654 #endif
 655
 656         dir_in = US_DIRECTION(srb->cmd[0]);
 657
 658         /* COMMAND phase */
 659         USB_STOR_PRINTF("COMMAND phase\n");
 660         result = usb_stor_BBB_comdat(srb, us);
 661         if (result < 0) {
 662                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
 663                         us->pusb_dev->status);
 664                 usb_stor_BBB_reset(us);
 665                 return USB_STOR_TRANSPORT_FAILED;
 666         }
 667         wait_ms(5);
 668         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 669         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 670         /* DATA phase + error handling */
 671         data_actlen = 0;
 672         /* no data, go immediately to the STATUS phase */
 673         if (srb->datalen == 0)
 674                 goto st;
 675         USB_STOR_PRINTF("DATA phase\n");
 676         if (dir_in)
 677                 pipe = pipein;
 678         else
 679                 pipe = pipeout;
 680         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
 681                               &data_actlen, USB_CNTL_TIMEOUT * 5);
 682         /* special handling of STALL in DATA phase */
 683         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 684                 USB_STOR_PRINTF("DATA:stall\n");
 685                 /* clear the STALL on the endpoint */
 686                 result = usb_stor_BBB_clear_endpt_stall(us,
 687                                         dir_in ? us->ep_in : us->ep_out);
 688                 if (result >= 0)
 689                         /* continue on to STATUS phase */
 690                         goto st;
 691         }
 692         if (result < 0) {
 693                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 694                         us->pusb_dev->status);
 695                 usb_stor_BBB_reset(us);
 696                 return USB_STOR_TRANSPORT_FAILED;
 697         }
 698 #ifdef BBB_XPORT_TRACE
 699         for (index = 0; index < data_actlen; index++)
 700                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 701         printf("\n");
 702 #endif
 703         /* STATUS phase + error handling */
 704 st:
 705         retry = 0;
 706 again:
 707         USB_STOR_PRINTF("STATUS phase\n");
 708         result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE,
 709                                 &actlen, USB_CNTL_TIMEOUT*5);
 710
 711         /* special handling of STALL in STATUS phase */
 712         if ((result < 0) && (retry < 1) &&
 713             (us->pusb_dev->status & USB_ST_STALLED)) {
 714                 USB_STOR_PRINTF("STATUS:stall\n");
 715                 /* clear the STALL on the endpoint */
 716                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 717                 if (result >= 0 && (retry++ < 1))
 718                         /* do a retry */
 719                         goto again;
 720         }
 721         if (result < 0) {
 722                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 723                         us->pusb_dev->status);
 724                 usb_stor_BBB_reset(us);
 725                 return USB_STOR_TRANSPORT_FAILED;
 726         }
 727 #ifdef BBB_XPORT_TRACE
 728         ptr = (unsigned char *)&csw;
 729         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 730                 printf("ptr[%d] %#x ", index, ptr[index]);
 731         printf("\n");
 732 #endif
 733         /* misuse pipe to get the residue */
 734         pipe = le32_to_cpu(csw.dCSWDataResidue);
 735         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 736                 pipe = srb->datalen - data_actlen;
 737         if (CSWSIGNATURE != le32_to_cpu(csw.dCSWSignature)) {
 738                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
 739                 usb_stor_BBB_reset(us);
 740                 return USB_STOR_TRANSPORT_FAILED;
 741         } else if ((CBWTag - 1) != le32_to_cpu(csw.dCSWTag)) {
 742                 USB_STOR_PRINTF("!Tag\n");
 743                 usb_stor_BBB_reset(us);
 744                 return USB_STOR_TRANSPORT_FAILED;
 745         } else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
 746                 USB_STOR_PRINTF(">PHASE\n");
 747                 usb_stor_BBB_reset(us);
 748                 return USB_STOR_TRANSPORT_FAILED;
 749         } else if (csw.bCSWStatus == CSWSTATUS_PHASE) {
 750                 USB_STOR_PRINTF("=PHASE\n");
 751                 usb_stor_BBB_reset(us);
 752                 return USB_STOR_TRANSPORT_FAILED;
 753         } else if (data_actlen > srb->datalen) {
 754                 USB_STOR_PRINTF("transferred %dB instead of %dB\n",
 755                         data_actlen, srb->datalen);
 756                 return USB_STOR_TRANSPORT_FAILED;
 757         } else if (csw.bCSWStatus == CSWSTATUS_FAILED) {
 758                 USB_STOR_PRINTF("FAILED\n");
 759                 return USB_STOR_TRANSPORT_FAILED;
 760         }
 761
 762         return result;
 763 }
 764
 765 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 766 {
 767         int result, status;
 768         ccb *psrb;
 769         ccb reqsrb;
 770         int retry, notready;
 771
 772         psrb = &reqsrb;
 773         status = USB_STOR_TRANSPORT_GOOD;
 774         retry = 0;
 775         notready = 0;
 776         /* issue the command */
 777 do_retry:
 778         result = usb_stor_CB_comdat(srb, us);
 779         USB_STOR_PRINTF("command / Data returned %d, status %X\n",
 780                         result, us->pusb_dev->status);
 781         /* if this is an CBI Protocol, get IRQ */
 782         if (us->protocol == US_PR_CBI) {
 783                 status = usb_stor_CBI_get_status(srb, us);
 784                 /* if the status is error, report it */
 785                 if (status == USB_STOR_TRANSPORT_ERROR) {
 786                         USB_STOR_PRINTF(" USB CBI Command Error\n");
 787                         return status;
 788                 }
 789                 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
 790                 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
 791                 if (!us->ip_data) {
 792                         /* if the status is good, report it */
 793                         if (status == USB_STOR_TRANSPORT_GOOD) {
 794                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
 795                                 return status;
 796                         }
 797                 }
 798         }
 799         /* do we have to issue an auto request? */
 800         /* HERE we have to check the result */
 801         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 802                 USB_STOR_PRINTF("ERROR %X\n", us->pusb_dev->status);
 803                 us->transport_reset(us);
 804                 return USB_STOR_TRANSPORT_ERROR;
 805         }
 806         if ((us->protocol == US_PR_CBI) &&
 807             ((srb->cmd[0] == SCSI_REQ_SENSE) ||
 808             (srb->cmd[0] == SCSI_INQUIRY))) {
 809                 /* do not issue an autorequest after request sense */
 810                 USB_STOR_PRINTF("No auto request and good\n");
 811                 return USB_STOR_TRANSPORT_GOOD;
 812         }
 813         /* issue an request_sense */
 814         memset(&psrb->cmd[0], 0, 12);
 815         psrb->cmd[0] = SCSI_REQ_SENSE;
 816         psrb->cmd[1] = srb->lun << 5;
 817         psrb->cmd[4] = 18;
 818         psrb->datalen = 18;
 819         psrb->pdata = &srb->sense_buf[0];
 820         psrb->cmdlen = 12;
 821         /* issue the command */
 822         result = usb_stor_CB_comdat(psrb, us);
 823         USB_STOR_PRINTF("auto request returned %d\n", result);
 824         /* if this is an CBI Protocol, get IRQ */
 825         if (us->protocol == US_PR_CBI)
 826                 status = usb_stor_CBI_get_status(psrb, us);
 827
 828         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 829                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n",
 830                                 us->pusb_dev->status);
 831                 return USB_STOR_TRANSPORT_ERROR;
 832         }
 833         USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 834                         srb->sense_buf[0], srb->sense_buf[2],
 835                         srb->sense_buf[12], srb->sense_buf[13]);
 836         /* Check the auto request result */
 837         if ((srb->sense_buf[2] == 0) &&
 838             (srb->sense_buf[12] == 0) &&
 839             (srb->sense_buf[13] == 0)) {
 840                 /* ok, no sense */
 841                 return USB_STOR_TRANSPORT_GOOD;
 842         }
 843
 844         /* Check the auto request result */
 845         switch (srb->sense_buf[2]) {
 846         case 0x01:
 847                 /* Recovered Error */
 848                 return USB_STOR_TRANSPORT_GOOD;
 849                 break;
 850         case 0x02:
 851                 /* Not Ready */
 852                 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 853                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 854                                " 0x%02X (NOT READY)\n", srb->cmd[0],
 855                                 srb->sense_buf[0], srb->sense_buf[2],
 856                                 srb->sense_buf[12], srb->sense_buf[13]);
 857                         return USB_STOR_TRANSPORT_FAILED;
 858                 } else {
 859                         wait_ms(100);
 860                         goto do_retry;
 861                 }
 862                 break;
 863         default:
 864                 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 865                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 866                                " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
 867                                 srb->sense_buf[2], srb->sense_buf[12],
 868                                 srb->sense_buf[13]);
 869                         return USB_STOR_TRANSPORT_FAILED;
 870                 } else
 871                         goto do_retry;
 872                 break;
 873         }
 874         return USB_STOR_TRANSPORT_FAILED;
 875 }
 876
 877
 878 static int usb_inquiry(ccb *srb, struct us_data *ss)
 879 {
 880         int retry, i;
 881         retry = 5;
 882         do {
 883                 memset(&srb->cmd[0], 0, 12);
 884                 srb->cmd[0] = SCSI_INQUIRY;
 885                 srb->cmd[4] = 36;
 886                 srb->datalen = 36;
 887                 srb->cmdlen = 12;
 888                 i = ss->transport(srb, ss);
 889                 USB_STOR_PRINTF("inquiry returns %d\n", i);
 890                 if (i == 0)
 891                         break;
 892         } while (--retry);
 893
 894         if (!retry) {
 895                 printf("error in inquiry\n");
 896                 return -1;
 897         }
 898         return 0;
 899 }
 900
 901 static int usb_request_sense(ccb *srb, struct us_data *ss)
 902 {
 903         char *ptr;
 904
 905         ptr = (char *)srb->pdata;
 906         memset(&srb->cmd[0], 0, 12);
 907         srb->cmd[0] = SCSI_REQ_SENSE;
 908         srb->cmd[4] = 18;
 909         srb->datalen = 18;
 910         srb->pdata = &srb->sense_buf[0];
 911         srb->cmdlen = 12;
 912         ss->transport(srb, ss);
 913         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",
 914                         srb->sense_buf[2], srb->sense_buf[12],
 915                         srb->sense_buf[13]);
 916         srb->pdata = (uchar *)ptr;
 917         return 0;
 918 }
 919
 920 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
 921 {
 922         int retries = 10;
 923
 924         do {
 925                 memset(&srb->cmd[0], 0, 12);
 926                 srb->cmd[0] = SCSI_TST_U_RDY;
 927                 srb->datalen = 0;
 928                 srb->cmdlen = 12;
 929                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
 930                         return 0;
 931                 usb_request_sense(srb, ss);
 932                 wait_ms(100);
 933         } while (retries--);
 934
 935         return -1;
 936 }
 937
 938 static int usb_read_capacity(ccb *srb, struct us_data *ss)
 939 {
 940         int retry;
 941         /* XXX retries */
 942         retry = 3;
 943         do {
 944                 memset(&srb->cmd[0], 0, 12);
 945                 srb->cmd[0] = SCSI_RD_CAPAC;
 946                 srb->datalen = 8;
 947                 srb->cmdlen = 12;
 948                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
 949                         return 0;
 950         } while (retry--);
 951
 952         return -1;
 953 }
 954
 955 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
 956                        unsigned short blocks)
 957 {
 958         memset(&srb->cmd[0], 0, 12);
 959         srb->cmd[0] = SCSI_READ10;
 960         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
 961         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
 962         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
 963         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
 964         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
 965         srb->cmd[8] = (unsigned char) blocks & 0xff;
 966         srb->cmdlen = 12;
 967         USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks);
 968         return ss->transport(srb, ss);
 969 }
 970
 971 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
 972                         unsigned short blocks)
 973 {
 974         memset(&srb->cmd[0], 0, 12);
 975         srb->cmd[0] = SCSI_WRITE10;
 976         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
 977         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
 978         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
 979         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
 980         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
 981         srb->cmd[8] = (unsigned char) blocks & 0xff;
 982         srb->cmdlen = 12;
 983         USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks);
 984         return ss->transport(srb, ss);
 985 }
 986
 987
 988 #ifdef CONFIG_USB_BIN_FIXUP
 989 /*
 990  * Some USB storage devices queried for SCSI identification data respond with
 991  * binary strings, which if output to the console freeze the terminal. The
 992  * workaround is to modify the vendor and product strings read from such
 993  * device with proper values (as reported by 'usb info').
 994  *
 995  * Vendor and product length limits are taken from the definition of
 996  * block_dev_desc_t in include/part.h.
 997  */
 998 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
 999                                 unsigned char vendor[],
1000                                 unsigned char product[]) {
1001         const unsigned char max_vendor_len = 40;
1002         const unsigned char max_product_len = 20;
1003         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1004                 strncpy((char *)vendor, "SMSC", max_vendor_len);
1005                 strncpy((char *)product, "Flash Media Cntrller",
1006                         max_product_len);
1007         }
1008 }
1009 #endif /* CONFIG_USB_BIN_FIXUP */
1010
1011 #define USB_MAX_READ_BLK 20
1012
1013 unsigned long usb_stor_read(int device, unsigned long blknr,
1014                             unsigned long blkcnt, void *buffer)
1015 {
1016         unsigned long start, blks, buf_addr;
1017         unsigned short smallblks;
1018         struct usb_device *dev;
1019         int retry, i;
1020         ccb *srb = &usb_ccb;
1021
1022         if (blkcnt == 0)
1023                 return 0;
1024
1025         device &= 0xff;
1026         /* Setup  device */
1027         USB_STOR_PRINTF("\nusb_read: dev %d \n", device);
1028         dev = NULL;
1029         for (i = 0; i < USB_MAX_DEVICE; i++) {
1030                 dev = usb_get_dev_index(i);
1031                 if (dev == NULL)
1032                         return 0;
1033                 if (dev->devnum == usb_dev_desc[device].target)
1034                         break;
1035         }
1036
1037         usb_disable_asynch(1); /* asynch transfer not allowed */
1038         srb->lun = usb_dev_desc[device].lun;
1039         buf_addr = (unsigned long)buffer;
1040         start = blknr;
1041         blks = blkcnt;
1042         if (usb_test_unit_ready(srb, (struct us_data *)dev->privptr)) {
1043                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1044                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1045                        srb->sense_buf[13]);
1046                 return 0;
1047         }
1048
1049         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx"
1050                         " buffer %lx\n", device, start, blks, buf_addr);
1051
1052         do {
1053                 /* XXX need some comment here */
1054                 retry = 2;
1055                 srb->pdata = (unsigned char *)buf_addr;
1056                 if (blks > USB_MAX_READ_BLK)
1057                         smallblks = USB_MAX_READ_BLK;
1058                 else
1059                         smallblks = (unsigned short) blks;
1060 retry_it:
1061                 if (smallblks == USB_MAX_READ_BLK)
1062                         usb_show_progress();
1063                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1064                 srb->pdata = (unsigned char *)buf_addr;
1065                 if (usb_read_10(srb, (struct us_data *)dev->privptr, start,
1066                     smallblks)) {
1067                         USB_STOR_PRINTF("Read ERROR\n");
1068                         usb_request_sense(srb, (struct us_data *)dev->privptr);
1069                         if (retry--)
1070                                 goto retry_it;
1071                         blkcnt -= blks;
1072                         break;
1073                 }
1074                 start += smallblks;
1075                 blks -= smallblks;
1076                 buf_addr += srb->datalen;
1077         } while (blks != 0);
1078
1079         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",
1080                         start, smallblks, buf_addr);
1081
1082         usb_disable_asynch(0); /* asynch transfer allowed */
1083         if (blkcnt >= USB_MAX_READ_BLK)
1084                 debug("\n");
1085         return blkcnt;
1086 }
1087
1088 #define USB_MAX_WRITE_BLK 20
1089
1090 unsigned long usb_stor_write(int device, unsigned long blknr,
1091                                 unsigned long blkcnt, const void *buffer)
1092 {
1093         unsigned long start, blks, buf_addr;
1094         unsigned short smallblks;
1095         struct usb_device *dev;
1096         int retry, i;
1097         ccb *srb = &usb_ccb;
1098
1099         if (blkcnt == 0)
1100                 return 0;
1101
1102         device &= 0xff;
1103         /* Setup  device */
1104         USB_STOR_PRINTF("\nusb_write: dev %d \n", device);
1105         dev = NULL;
1106         for (i = 0; i < USB_MAX_DEVICE; i++) {
1107                 dev = usb_get_dev_index(i);
1108                 if (dev == NULL)
1109                         return 0;
1110                 if (dev->devnum == usb_dev_desc[device].target)
1111                         break;
1112         }
1113
1114         usb_disable_asynch(1); /* asynch transfer not allowed */
1115
1116         srb->lun = usb_dev_desc[device].lun;
1117         buf_addr = (unsigned long)buffer;
1118         start = blknr;
1119         blks = blkcnt;
1120         if (usb_test_unit_ready(srb, (struct us_data *)dev->privptr)) {
1121                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1122                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1123                         srb->sense_buf[13]);
1124                 return 0;
1125         }
1126
1127         USB_STOR_PRINTF("\nusb_write: dev %d startblk %lx, blccnt %lx"
1128                         " buffer %lx\n", device, start, blks, buf_addr);
1129
1130         do {
1131                 /* If write fails retry for max retry count else
1132                  * return with number of blocks written successfully.
1133                  */
1134                 retry = 2;
1135                 srb->pdata = (unsigned char *)buf_addr;
1136                 if (blks > USB_MAX_WRITE_BLK)
1137                         smallblks = USB_MAX_WRITE_BLK;
1138                 else
1139                         smallblks = (unsigned short) blks;
1140 retry_it:
1141                 if (smallblks == USB_MAX_WRITE_BLK)
1142                         usb_show_progress();
1143                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1144                 srb->pdata = (unsigned char *)buf_addr;
1145                 if (usb_write_10(srb, (struct us_data *)dev->privptr, start,
1146                     smallblks)) {
1147                         USB_STOR_PRINTF("Write ERROR\n");
1148                         usb_request_sense(srb, (struct us_data *)dev->privptr);
1149                         if (retry--)
1150                                 goto retry_it;
1151                         blkcnt -= blks;
1152                         break;
1153                 }
1154                 start += smallblks;
1155                 blks -= smallblks;
1156                 buf_addr += srb->datalen;
1157         } while (blks != 0);
1158
1159         USB_STOR_PRINTF("usb_write: end startblk %lx, blccnt %x buffer %lx\n",
1160                         start, smallblks, buf_addr);
1161
1162         usb_disable_asynch(0); /* asynch transfer allowed */
1163         if (blkcnt >= USB_MAX_WRITE_BLK)
1164                 debug("\n");
1165         return blkcnt;
1166
1167 }
1168
1169 /* Probe to see if a new device is actually a Storage device */
1170 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1171                       struct us_data *ss)
1172 {
1173         struct usb_interface *iface;
1174         int i;
1175         unsigned int flags = 0;
1176
1177         int protocol = 0;
1178         int subclass = 0;
1179
1180         /* let's examine the device now */
1181         iface = &dev->config.if_desc[ifnum];
1182
1183 #if 0
1184         /* this is the place to patch some storage devices */
1185         USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1186                         dev->descriptor.idProduct);
1187
1188         if ((dev->descriptor.idVendor) == 0x066b &&
1189             (dev->descriptor.idProduct) == 0x0103) {
1190                 USB_STOR_PRINTF("patched for E-USB\n");
1191                 protocol = US_PR_CB;
1192                 subclass = US_SC_UFI;       /* an assumption */
1193         }
1194 #endif
1195
1196         if (dev->descriptor.bDeviceClass != 0 ||
1197                         iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1198                         iface->desc.bInterfaceSubClass < US_SC_MIN ||
1199                         iface->desc.bInterfaceSubClass > US_SC_MAX) {
1200                 /* if it's not a mass storage, we go no further */
1201                 return 0;
1202         }
1203
1204         memset(ss, 0, sizeof(struct us_data));
1205
1206         /* At this point, we know we've got a live one */
1207         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1208
1209         /* Initialize the us_data structure with some useful info */
1210         ss->flags = flags;
1211         ss->ifnum = ifnum;
1212         ss->pusb_dev = dev;
1213         ss->attention_done = 0;
1214
1215         /* If the device has subclass and protocol, then use that.  Otherwise,
1216          * take data from the specific interface.
1217          */
1218         if (subclass) {
1219                 ss->subclass = subclass;
1220                 ss->protocol = protocol;
1221         } else {
1222                 ss->subclass = iface->desc.bInterfaceSubClass;
1223                 ss->protocol = iface->desc.bInterfaceProtocol;
1224         }
1225
1226         /* set the handler pointers based on the protocol */
1227         USB_STOR_PRINTF("Transport: ");
1228         switch (ss->protocol) {
1229         case US_PR_CB:
1230                 USB_STOR_PRINTF("Control/Bulk\n");
1231                 ss->transport = usb_stor_CB_transport;
1232                 ss->transport_reset = usb_stor_CB_reset;
1233                 break;
1234
1235         case US_PR_CBI:
1236                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1237                 ss->transport = usb_stor_CB_transport;
1238                 ss->transport_reset = usb_stor_CB_reset;
1239                 break;
1240         case US_PR_BULK:
1241                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1242                 ss->transport = usb_stor_BBB_transport;
1243                 ss->transport_reset = usb_stor_BBB_reset;
1244                 break;
1245         default:
1246                 printf("USB Storage Transport unknown / not yet implemented\n");
1247                 return 0;
1248                 break;
1249         }
1250
1251         /*
1252          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1253          * An optional interrupt is OK (necessary for CBI protocol).
1254          * We will ignore any others.
1255          */
1256         for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1257                 /* is it an BULK endpoint? */
1258                 if ((iface->ep_desc[i].bmAttributes &
1259                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1260                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1261                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1262                                         USB_ENDPOINT_NUMBER_MASK;
1263                         else
1264                                 ss->ep_out =
1265                                         iface->ep_desc[i].bEndpointAddress &
1266                                         USB_ENDPOINT_NUMBER_MASK;
1267                 }
1268
1269                 /* is it an interrupt endpoint? */
1270                 if ((iface->ep_desc[i].bmAttributes &
1271                     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1272                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1273                                 USB_ENDPOINT_NUMBER_MASK;
1274                         ss->irqinterval = iface->ep_desc[i].bInterval;
1275                 }
1276         }
1277         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1278                   ss->ep_in, ss->ep_out, ss->ep_int);
1279
1280         /* Do some basic sanity checks, and bail if we find a problem */
1281         if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1282             !ss->ep_in || !ss->ep_out ||
1283             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1284                 USB_STOR_PRINTF("Problems with device\n");
1285                 return 0;
1286         }
1287         /* set class specific stuff */
1288         /* We only handle certain protocols.  Currently, these are
1289          * the only ones.
1290          * The SFF8070 accepts the requests used in u-boot
1291          */
1292         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1293             ss->subclass != US_SC_8070) {
1294                 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1295                 return 0;
1296         }
1297         if (ss->ep_int) {
1298                 /* we had found an interrupt endpoint, prepare irq pipe
1299                  * set up the IRQ pipe and handler
1300                  */
1301                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1302                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1303                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1304                 dev->irq_handle = usb_stor_irq;
1305         }
1306         dev->privptr = (void *)ss;
1307         return 1;
1308 }
1309
1310 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1311                       block_dev_desc_t *dev_desc)
1312 {
1313         unsigned char perq, modi;
1314         unsigned long cap[2];
1315         unsigned long *capacity, *blksz;
1316         ccb *pccb = &usb_ccb;
1317
1318         /* for some reasons a couple of devices would not survive this reset */
1319         if (
1320             /* Sony USM256E */
1321             (dev->descriptor.idVendor == 0x054c &&
1322              dev->descriptor.idProduct == 0x019e)
1323             ||
1324             /* USB007 Mini-USB2 Flash Drive */
1325             (dev->descriptor.idVendor == 0x066f &&
1326              dev->descriptor.idProduct == 0x2010)
1327             ||
1328             /* SanDisk Corporation Cruzer Micro 20044318410546613953 */
1329             (dev->descriptor.idVendor == 0x0781 &&
1330              dev->descriptor.idProduct == 0x5151)
1331             ||
1332             /*
1333              * SanDisk Corporation U3 Cruzer Micro 1/4GB
1334              * Flash Drive 000016244373FFB4
1335              */
1336             (dev->descriptor.idVendor == 0x0781 &&
1337              dev->descriptor.idProduct == 0x5406)
1338             )
1339                 USB_STOR_PRINTF("usb_stor_get_info: skipping RESET..\n");
1340         else
1341                 ss->transport_reset(ss);
1342
1343         pccb->pdata = usb_stor_buf;
1344
1345         dev_desc->target = dev->devnum;
1346         pccb->lun = dev_desc->lun;
1347         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1348
1349         if (usb_inquiry(pccb, ss))
1350                 return -1;
1351
1352         perq = usb_stor_buf[0];
1353         modi = usb_stor_buf[1];
1354
1355         if ((perq & 0x1f) == 0x1f) {
1356                 /* skip unknown devices */
1357                 return 0;
1358         }
1359         if ((modi&0x80) == 0x80) {
1360                 /* drive is removable */
1361                 dev_desc->removable = 1;
1362         }
1363         memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
1364         memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
1365         memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
1366         dev_desc->vendor[8] = 0;
1367         dev_desc->product[16] = 0;
1368         dev_desc->revision[4] = 0;
1369 #ifdef CONFIG_USB_BIN_FIXUP
1370         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1371                       (uchar *)dev_desc->product);
1372 #endif /* CONFIG_USB_BIN_FIXUP */
1373         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1374                         usb_stor_buf[3]);
1375         if (usb_test_unit_ready(pccb, ss)) {
1376                 printf("Device NOT ready\n"
1377                        "   Request Sense returned %02X %02X %02X\n",
1378                        pccb->sense_buf[2], pccb->sense_buf[12],
1379                        pccb->sense_buf[13]);
1380                 if (dev_desc->removable == 1) {
1381                         dev_desc->type = perq;
1382                         return 1;
1383                 }
1384                 return 0;
1385         }
1386         pccb->pdata = (unsigned char *)&cap[0];
1387         memset(pccb->pdata, 0, 8);
1388         if (usb_read_capacity(pccb, ss) != 0) {
1389                 printf("READ_CAP ERROR\n");
1390                 cap[0] = 2880;
1391                 cap[1] = 0x200;
1392         }
1393         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0],
1394                         cap[1]);
1395 #if 0
1396         if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1397                 cap[0] >>= 16;
1398 #endif
1399         cap[0] = cpu_to_be32(cap[0]);
1400         cap[1] = cpu_to_be32(cap[1]);
1401
1402         /* this assumes bigendian! */
1403         cap[0] += 1;
1404         capacity = &cap[0];
1405         blksz = &cap[1];
1406         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",
1407                         *capacity, *blksz);
1408         dev_desc->lba = *capacity;
1409         dev_desc->blksz = *blksz;
1410         dev_desc->type = perq;
1411         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1412         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1413
1414         init_part(dev_desc);
1415
1416         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1417         return 1;
1418 }