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 BBB_COMDAT_TRACE
  60 #undef BBB_XPORT_TRACE
  61
  62 #ifdef  USB_STOR_DEBUG
  63 #define USB_BLK_DEBUG   1
  64 #else
  65 #define USB_BLK_DEBUG   0
  66 #endif
  67
  68 #define USB_STOR_PRINTF(fmt, args...)   debug_cond(USB_BLK_DEBUG, fmt, ##args)
  69
  70 #include <scsi.h>
  71 /* direction table -- this indicates the direction of the data
  72  * transfer for each command code -- a 1 indicates input
  73  */
  74 static const unsigned char us_direction[256/8] = {
  75         0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
  76         0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
  77         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
  78         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
  79 };
  80 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
  81
  82 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN)));
  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 /*
 159  * The U-Boot EHCI driver cannot handle more than 5 page aligned buffers
 160  * of 4096 bytes in a transfer without running itself out of qt_buffers
 161  */
 162 #define USB_MAX_XFER_BLK(start, blksz)  (((4096 * 5) - (start % 4096)) / blksz)
 163
 164 static struct us_data usb_stor[USB_MAX_STOR_DEV];
 165
 166
 167 #define USB_STOR_TRANSPORT_GOOD    0
 168 #define USB_STOR_TRANSPORT_FAILED -1
 169 #define USB_STOR_TRANSPORT_ERROR  -2
 170
 171 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
 172                       block_dev_desc_t *dev_desc);
 173 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
 174                       struct us_data *ss);
 175 unsigned long usb_stor_read(int device, unsigned long blknr,
 176                             unsigned long blkcnt, void *buffer);
 177 unsigned long usb_stor_write(int device, unsigned long blknr,
 178                              unsigned long blkcnt, const void *buffer);
 179 struct usb_device * usb_get_dev_index(int index);
 180 void uhci_show_temp_int_td(void);
 181
 182 #ifdef CONFIG_PARTITIONS
 183 block_dev_desc_t *usb_stor_get_dev(int index)
 184 {
 185         return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL;
 186 }
 187 #endif
 188
 189 void usb_show_progress(void)
 190 {
 191         debug(".");
 192 }
 193
 194 /*******************************************************************************
 195  * show info on storage devices; 'usb start/init' must be invoked earlier
 196  * as we only retrieve structures populated during devices initialization
 197  */
 198 int usb_stor_info(void)
 199 {
 200         int i;
 201
 202         if (usb_max_devs > 0) {
 203                 for (i = 0; i < usb_max_devs; i++) {
 204                         printf("  Device %d: ", i);
 205                         dev_print(&usb_dev_desc[i]);
 206                 }
 207                 return 0;
 208         }
 209
 210         printf("No storage devices, perhaps not 'usb start'ed..?\n");
 211         return 1;
 212 }
 213
 214 static unsigned int usb_get_max_lun(struct us_data *us)
 215 {
 216         int len;
 217         ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
 218         len = usb_control_msg(us->pusb_dev,
 219                               usb_rcvctrlpipe(us->pusb_dev, 0),
 220                               US_BBB_GET_MAX_LUN,
 221                               USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
 222                               0, us->ifnum,
 223                               result, sizeof(char),
 224                               USB_CNTL_TIMEOUT * 5);
 225         USB_STOR_PRINTF("Get Max LUN -> len = %i, result = %i\n",
 226                         len, (int) *result);
 227         return (len > 0) ? *result : 0;
 228 }
 229
 230 /*******************************************************************************
 231  * scan the usb and reports device info
 232  * to the user if mode = 1
 233  * returns current device or -1 if no
 234  */
 235 int usb_stor_scan(int mode)
 236 {
 237         unsigned char i;
 238         struct usb_device *dev;
 239
 240         if (mode == 1)
 241                 printf("       scanning bus for storage devices... ");
 242
 243         usb_disable_asynch(1); /* asynch transfer not allowed */
 244
 245         for (i = 0; i < USB_MAX_STOR_DEV; i++) {
 246                 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
 247                 usb_dev_desc[i].if_type = IF_TYPE_USB;
 248                 usb_dev_desc[i].dev = i;
 249                 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
 250                 usb_dev_desc[i].target = 0xff;
 251                 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
 252                 usb_dev_desc[i].block_read = usb_stor_read;
 253                 usb_dev_desc[i].block_write = usb_stor_write;
 254         }
 255
 256         usb_max_devs = 0;
 257         for (i = 0; i < USB_MAX_DEVICE; i++) {
 258                 dev = usb_get_dev_index(i); /* get device */
 259                 USB_STOR_PRINTF("i=%d\n", i);
 260                 if (dev == NULL)
 261                         break; /* no more devices available */
 262
 263                 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) {
 264                         /* OK, it's a storage device.  Iterate over its LUNs
 265                          * and populate `usb_dev_desc'.
 266                          */
 267                         int lun, max_lun, start = usb_max_devs;
 268
 269                         max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
 270                         for (lun = 0;
 271                              lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
 272                              lun++) {
 273                                 usb_dev_desc[usb_max_devs].lun = lun;
 274                                 if (usb_stor_get_info(dev, &usb_stor[start],
 275                                                       &usb_dev_desc[usb_max_devs]) == 1) {
 276                                 usb_max_devs++;
 277                 }
 278                         }
 279                 }
 280                 /* if storage device */
 281                 if (usb_max_devs == USB_MAX_STOR_DEV) {
 282                         printf("max USB Storage Device reached: %d stopping\n",
 283                                 usb_max_devs);
 284                         break;
 285                 }
 286         } /* for */
 287
 288         usb_disable_asynch(0); /* asynch transfer allowed */
 289         printf("%d Storage Device(s) found\n", usb_max_devs);
 290         if (usb_max_devs > 0)
 291                 return 0;
 292         return -1;
 293 }
 294
 295 static int usb_stor_irq(struct usb_device *dev)
 296 {
 297         struct us_data *us;
 298         us = (struct us_data *)dev->privptr;
 299
 300         if (us->ip_wanted)
 301                 us->ip_wanted = 0;
 302         return 0;
 303 }
 304
 305
 306 #ifdef  USB_STOR_DEBUG
 307
 308 static void usb_show_srb(ccb *pccb)
 309 {
 310         int i;
 311         printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
 312         for (i = 0; i < 12; i++)
 313                 printf("%02X ", pccb->cmd[i]);
 314         printf("\n");
 315 }
 316
 317 static void display_int_status(unsigned long tmp)
 318 {
 319         printf("Status: %s %s %s %s %s %s %s\n",
 320                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 321                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 322                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 323                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 324                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 325                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 326                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 327 }
 328 #endif
 329 /***********************************************************************
 330  * Data transfer routines
 331  ***********************************************************************/
 332
 333 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 334 {
 335         int max_size;
 336         int this_xfer;
 337         int result;
 338         int partial;
 339         int maxtry;
 340         int stat;
 341
 342         /* determine the maximum packet size for these transfers */
 343         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 344
 345         /* while we have data left to transfer */
 346         while (length) {
 347
 348                 /* calculate how long this will be -- maximum or a remainder */
 349                 this_xfer = length > max_size ? max_size : length;
 350                 length -= this_xfer;
 351
 352                 /* setup the retry counter */
 353                 maxtry = 10;
 354
 355                 /* set up the transfer loop */
 356                 do {
 357                         /* transfer the data */
 358                         USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
 359                                   (unsigned int)buf, this_xfer, 11 - maxtry);
 360                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 361                                               this_xfer, &partial,
 362                                               USB_CNTL_TIMEOUT * 5);
 363                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
 364                                   result, partial, this_xfer);
 365                         if (us->pusb_dev->status != 0) {
 366                                 /* if we stall, we need to clear it before
 367                                  * we go on
 368                                  */
 369 #ifdef USB_STOR_DEBUG
 370                                 display_int_status(us->pusb_dev->status);
 371 #endif
 372                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 373                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
 374                                         stat = us->pusb_dev->status;
 375                                         usb_clear_halt(us->pusb_dev, pipe);
 376                                         us->pusb_dev->status = stat;
 377                                         if (this_xfer == partial) {
 378                                                 USB_STOR_PRINTF("bulk transferred with error %lX, but data ok\n", us->pusb_dev->status);
 379                                                 return 0;
 380                                         }
 381                                         else
 382                                                 return result;
 383                                 }
 384                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 385                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
 386                                         return result;
 387                                 }
 388                                 USB_STOR_PRINTF("bulk transferred with error");
 389                                 if (this_xfer == partial) {
 390                                         USB_STOR_PRINTF(" %ld, but data ok\n",
 391                                                         us->pusb_dev->status);
 392                                         return 0;
 393                                 }
 394                                 /* if our try counter reaches 0, bail out */
 395                                         USB_STOR_PRINTF(" %ld, data %d\n",
 396                                                 us->pusb_dev->status, partial);
 397                                 if (!maxtry--)
 398                                                 return result;
 399                         }
 400                         /* update to show what data was transferred */
 401                         this_xfer -= partial;
 402                         buf += partial;
 403                         /* continue until this transfer is done */
 404                 } while (this_xfer);
 405         }
 406
 407         /* if we get here, we're done and successful */
 408         return 0;
 409 }
 410
 411 static int usb_stor_BBB_reset(struct us_data *us)
 412 {
 413         int result;
 414         unsigned int pipe;
 415
 416         /*
 417          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 418          *
 419          * For Reset Recovery the host shall issue in the following order:
 420          * a) a Bulk-Only Mass Storage Reset
 421          * b) a Clear Feature HALT to the Bulk-In endpoint
 422          * c) a Clear Feature HALT to the Bulk-Out endpoint
 423          *
 424          * This is done in 3 steps.
 425          *
 426          * If the reset doesn't succeed, the device should be port reset.
 427          *
 428          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 429          */
 430         USB_STOR_PRINTF("BBB_reset\n");
 431         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 432                                  US_BBB_RESET,
 433                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 434                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5);
 435
 436         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 437                 USB_STOR_PRINTF("RESET:stall\n");
 438                 return -1;
 439         }
 440
 441         /* long wait for reset */
 442         mdelay(150);
 443         USB_STOR_PRINTF("BBB_reset result %d: status %lX reset\n", result,
 444                         us->pusb_dev->status);
 445         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 446         result = usb_clear_halt(us->pusb_dev, pipe);
 447         /* long wait for reset */
 448         mdelay(150);
 449         USB_STOR_PRINTF("BBB_reset result %d: status %lX clearing IN endpoint\n",
 450                         result, us->pusb_dev->status);
 451         /* long wait for reset */
 452         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 453         result = usb_clear_halt(us->pusb_dev, pipe);
 454         mdelay(150);
 455         USB_STOR_PRINTF("BBB_reset result %d: status %lX"
 456                         " clearing OUT endpoint\n", result,
 457                         us->pusb_dev->status);
 458         USB_STOR_PRINTF("BBB_reset done\n");
 459         return 0;
 460 }
 461
 462 /* FIXME: this reset function doesn't really reset the port, and it
 463  * should. Actually it should probably do what it's doing here, and
 464  * reset the port physically
 465  */
 466 static int usb_stor_CB_reset(struct us_data *us)
 467 {
 468         unsigned char cmd[12];
 469         int result;
 470
 471         USB_STOR_PRINTF("CB_reset\n");
 472         memset(cmd, 0xff, sizeof(cmd));
 473         cmd[0] = SCSI_SEND_DIAG;
 474         cmd[1] = 4;
 475         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 476                                  US_CBI_ADSC,
 477                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 478                                  0, us->ifnum, cmd, sizeof(cmd),
 479                                  USB_CNTL_TIMEOUT * 5);
 480
 481         /* long wait for reset */
 482         mdelay(1500);
 483         USB_STOR_PRINTF("CB_reset result %d: status %lX"
 484                         " clearing endpoint halt\n", result,
 485                         us->pusb_dev->status);
 486         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 487         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 488
 489         USB_STOR_PRINTF("CB_reset done\n");
 490         return 0;
 491 }
 492
 493 /*
 494  * Set up the command for a BBB device. Note that the actual SCSI
 495  * command is copied into cbw.CBWCDB.
 496  */
 497 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 498 {
 499         int result;
 500         int actlen;
 501         int dir_in;
 502         unsigned int pipe;
 503         ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_cbw_t, cbw, 1);
 504
 505         dir_in = US_DIRECTION(srb->cmd[0]);
 506
 507 #ifdef BBB_COMDAT_TRACE
 508         printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n",
 509                 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
 510                 srb->pdata);
 511         if (srb->cmdlen) {
 512                 for (result = 0; result < srb->cmdlen; result++)
 513                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 514                 printf("\n");
 515         }
 516 #endif
 517         /* sanity checks */
 518         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 519                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
 520                 return -1;
 521         }
 522
 523         /* always OUT to the ep */
 524         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 525
 526         cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
 527         cbw->dCBWTag = cpu_to_le32(CBWTag++);
 528         cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
 529         cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
 530         cbw->bCBWLUN = srb->lun;
 531         cbw->bCDBLength = srb->cmdlen;
 532         /* copy the command data into the CBW command data buffer */
 533         /* DST SRC LEN!!! */
 534         memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
 535         result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
 536                               &actlen, USB_CNTL_TIMEOUT * 5);
 537         if (result < 0)
 538                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 539         return result;
 540 }
 541
 542 /* FIXME: we also need a CBI_command which sets up the completion
 543  * interrupt, and waits for it
 544  */
 545 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 546 {
 547         int result = 0;
 548         int dir_in, retry;
 549         unsigned int pipe;
 550         unsigned long status;
 551
 552         retry = 5;
 553         dir_in = US_DIRECTION(srb->cmd[0]);
 554
 555         if (dir_in)
 556                 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 557         else
 558                 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 559
 560         while (retry--) {
 561                 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry);
 562 #ifdef USB_STOR_DEBUG
 563                 usb_show_srb(srb);
 564 #endif
 565                 /* let's send the command via the control pipe */
 566                 result = usb_control_msg(us->pusb_dev,
 567                                          usb_sndctrlpipe(us->pusb_dev , 0),
 568                                          US_CBI_ADSC,
 569                                          USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 570                                          0, us->ifnum,
 571                                          srb->cmd, srb->cmdlen,
 572                                          USB_CNTL_TIMEOUT * 5);
 573                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
 574                                 " status %lX\n", result, us->pusb_dev->status);
 575                 /* check the return code for the command */
 576                 if (result < 0) {
 577                         if (us->pusb_dev->status & USB_ST_STALLED) {
 578                                 status = us->pusb_dev->status;
 579                                 USB_STOR_PRINTF(" stall during command found,"
 580                                                 " clear pipe\n");
 581                                 usb_clear_halt(us->pusb_dev,
 582                                               usb_sndctrlpipe(us->pusb_dev, 0));
 583                                 us->pusb_dev->status = status;
 584                         }
 585                         USB_STOR_PRINTF(" error during command %02X"
 586                                         " Stat = %lX\n", srb->cmd[0],
 587                                         us->pusb_dev->status);
 588                         return result;
 589                 }
 590                 /* transfer the data payload for this command, if one exists*/
 591
 592                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
 593                                 " direction is %s to go 0x%lx\n", result,
 594                                 dir_in ? "IN" : "OUT", srb->datalen);
 595                 if (srb->datalen) {
 596                         result = us_one_transfer(us, pipe, (char *)srb->pdata,
 597                                                  srb->datalen);
 598                         USB_STOR_PRINTF("CBI attempted to transfer data,"
 599                                         " result is %d status %lX, len %d\n",
 600                                         result, us->pusb_dev->status,
 601                                         us->pusb_dev->act_len);
 602                         if (!(us->pusb_dev->status & USB_ST_NAK_REC))
 603                                 break;
 604                 } /* if (srb->datalen) */
 605                 else
 606                         break;
 607         }
 608         /* return result */
 609
 610         return result;
 611 }
 612
 613
 614 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 615 {
 616         int timeout;
 617
 618         us->ip_wanted = 1;
 619         submit_int_msg(us->pusb_dev, us->irqpipe,
 620                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 621         timeout = 1000;
 622         while (timeout--) {
 623                 if ((volatile int *) us->ip_wanted == 0)
 624                         break;
 625                 mdelay(10);
 626         }
 627         if (us->ip_wanted) {
 628                 printf("        Did not get interrupt on CBI\n");
 629                 us->ip_wanted = 0;
 630                 return USB_STOR_TRANSPORT_ERROR;
 631         }
 632         USB_STOR_PRINTF
 633                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
 634                  us->ip_data, us->pusb_dev->irq_act_len,
 635                  us->pusb_dev->irq_status);
 636         /* UFI gives us ASC and ASCQ, like a request sense */
 637         if (us->subclass == US_SC_UFI) {
 638                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 639                     srb->cmd[0] == SCSI_INQUIRY)
 640                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 641                 else if (us->ip_data)
 642                         return USB_STOR_TRANSPORT_FAILED;
 643                 else
 644                         return USB_STOR_TRANSPORT_GOOD;
 645         }
 646         /* otherwise, we interpret the data normally */
 647         switch (us->ip_data) {
 648         case 0x0001:
 649                 return USB_STOR_TRANSPORT_GOOD;
 650         case 0x0002:
 651                 return USB_STOR_TRANSPORT_FAILED;
 652         default:
 653                 return USB_STOR_TRANSPORT_ERROR;
 654         }                       /* switch */
 655         return USB_STOR_TRANSPORT_ERROR;
 656 }
 657
 658 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 659 #define USB_TRANSPORT_NOT_READY_RETRY 10
 660
 661 /* clear a stall on an endpoint - special for BBB devices */
 662 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 663 {
 664         int result;
 665
 666         /* ENDPOINT_HALT = 0, so set value to 0 */
 667         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 668                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 669                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5);
 670         return result;
 671 }
 672
 673 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 674 {
 675         int result, retry;
 676         int dir_in;
 677         int actlen, data_actlen;
 678         unsigned int pipe, pipein, pipeout;
 679         ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1);
 680 #ifdef BBB_XPORT_TRACE
 681         unsigned char *ptr;
 682         int index;
 683 #endif
 684
 685         dir_in = US_DIRECTION(srb->cmd[0]);
 686
 687         /* COMMAND phase */
 688         USB_STOR_PRINTF("COMMAND phase\n");
 689         result = usb_stor_BBB_comdat(srb, us);
 690         if (result < 0) {
 691                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
 692                         us->pusb_dev->status);
 693                 usb_stor_BBB_reset(us);
 694                 return USB_STOR_TRANSPORT_FAILED;
 695         }
 696         mdelay(5);
 697         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 698         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 699         /* DATA phase + error handling */
 700         data_actlen = 0;
 701         /* no data, go immediately to the STATUS phase */
 702         if (srb->datalen == 0)
 703                 goto st;
 704         USB_STOR_PRINTF("DATA phase\n");
 705         if (dir_in)
 706                 pipe = pipein;
 707         else
 708                 pipe = pipeout;
 709         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
 710                               &data_actlen, USB_CNTL_TIMEOUT * 5);
 711         /* special handling of STALL in DATA phase */
 712         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 713                 USB_STOR_PRINTF("DATA:stall\n");
 714                 /* clear the STALL on the endpoint */
 715                 result = usb_stor_BBB_clear_endpt_stall(us,
 716                                         dir_in ? us->ep_in : us->ep_out);
 717                 if (result >= 0)
 718                         /* continue on to STATUS phase */
 719                         goto st;
 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         for (index = 0; index < data_actlen; index++)
 729                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 730         printf("\n");
 731 #endif
 732         /* STATUS phase + error handling */
 733 st:
 734         retry = 0;
 735 again:
 736         USB_STOR_PRINTF("STATUS phase\n");
 737         result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
 738                                 &actlen, USB_CNTL_TIMEOUT*5);
 739
 740         /* special handling of STALL in STATUS phase */
 741         if ((result < 0) && (retry < 1) &&
 742             (us->pusb_dev->status & USB_ST_STALLED)) {
 743                 USB_STOR_PRINTF("STATUS:stall\n");
 744                 /* clear the STALL on the endpoint */
 745                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 746                 if (result >= 0 && (retry++ < 1))
 747                         /* do a retry */
 748                         goto again;
 749         }
 750         if (result < 0) {
 751                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 752                         us->pusb_dev->status);
 753                 usb_stor_BBB_reset(us);
 754                 return USB_STOR_TRANSPORT_FAILED;
 755         }
 756 #ifdef BBB_XPORT_TRACE
 757         ptr = (unsigned char *)csw;
 758         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 759                 printf("ptr[%d] %#x ", index, ptr[index]);
 760         printf("\n");
 761 #endif
 762         /* misuse pipe to get the residue */
 763         pipe = le32_to_cpu(csw->dCSWDataResidue);
 764         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 765                 pipe = srb->datalen - data_actlen;
 766         if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
 767                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
 768                 usb_stor_BBB_reset(us);
 769                 return USB_STOR_TRANSPORT_FAILED;
 770         } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
 771                 USB_STOR_PRINTF("!Tag\n");
 772                 usb_stor_BBB_reset(us);
 773                 return USB_STOR_TRANSPORT_FAILED;
 774         } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
 775                 USB_STOR_PRINTF(">PHASE\n");
 776                 usb_stor_BBB_reset(us);
 777                 return USB_STOR_TRANSPORT_FAILED;
 778         } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
 779                 USB_STOR_PRINTF("=PHASE\n");
 780                 usb_stor_BBB_reset(us);
 781                 return USB_STOR_TRANSPORT_FAILED;
 782         } else if (data_actlen > srb->datalen) {
 783                 USB_STOR_PRINTF("transferred %dB instead of %ldB\n",
 784                         data_actlen, srb->datalen);
 785                 return USB_STOR_TRANSPORT_FAILED;
 786         } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
 787                 USB_STOR_PRINTF("FAILED\n");
 788                 return USB_STOR_TRANSPORT_FAILED;
 789         }
 790
 791         return result;
 792 }
 793
 794 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 795 {
 796         int result, status;
 797         ccb *psrb;
 798         ccb reqsrb;
 799         int retry, notready;
 800
 801         psrb = &reqsrb;
 802         status = USB_STOR_TRANSPORT_GOOD;
 803         retry = 0;
 804         notready = 0;
 805         /* issue the command */
 806 do_retry:
 807         result = usb_stor_CB_comdat(srb, us);
 808         USB_STOR_PRINTF("command / Data returned %d, status %lX\n",
 809                         result, us->pusb_dev->status);
 810         /* if this is an CBI Protocol, get IRQ */
 811         if (us->protocol == US_PR_CBI) {
 812                 status = usb_stor_CBI_get_status(srb, us);
 813                 /* if the status is error, report it */
 814                 if (status == USB_STOR_TRANSPORT_ERROR) {
 815                         USB_STOR_PRINTF(" USB CBI Command Error\n");
 816                         return status;
 817                 }
 818                 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
 819                 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
 820                 if (!us->ip_data) {
 821                         /* if the status is good, report it */
 822                         if (status == USB_STOR_TRANSPORT_GOOD) {
 823                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
 824                                 return status;
 825                         }
 826                 }
 827         }
 828         /* do we have to issue an auto request? */
 829         /* HERE we have to check the result */
 830         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 831                 USB_STOR_PRINTF("ERROR %lX\n", us->pusb_dev->status);
 832                 us->transport_reset(us);
 833                 return USB_STOR_TRANSPORT_ERROR;
 834         }
 835         if ((us->protocol == US_PR_CBI) &&
 836             ((srb->cmd[0] == SCSI_REQ_SENSE) ||
 837             (srb->cmd[0] == SCSI_INQUIRY))) {
 838                 /* do not issue an autorequest after request sense */
 839                 USB_STOR_PRINTF("No auto request and good\n");
 840                 return USB_STOR_TRANSPORT_GOOD;
 841         }
 842         /* issue an request_sense */
 843         memset(&psrb->cmd[0], 0, 12);
 844         psrb->cmd[0] = SCSI_REQ_SENSE;
 845         psrb->cmd[1] = srb->lun << 5;
 846         psrb->cmd[4] = 18;
 847         psrb->datalen = 18;
 848         psrb->pdata = &srb->sense_buf[0];
 849         psrb->cmdlen = 12;
 850         /* issue the command */
 851         result = usb_stor_CB_comdat(psrb, us);
 852         USB_STOR_PRINTF("auto request returned %d\n", result);
 853         /* if this is an CBI Protocol, get IRQ */
 854         if (us->protocol == US_PR_CBI)
 855                 status = usb_stor_CBI_get_status(psrb, us);
 856
 857         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 858                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %ld\n",
 859                                 us->pusb_dev->status);
 860                 return USB_STOR_TRANSPORT_ERROR;
 861         }
 862         USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 863                         srb->sense_buf[0], srb->sense_buf[2],
 864                         srb->sense_buf[12], srb->sense_buf[13]);
 865         /* Check the auto request result */
 866         if ((srb->sense_buf[2] == 0) &&
 867             (srb->sense_buf[12] == 0) &&
 868             (srb->sense_buf[13] == 0)) {
 869                 /* ok, no sense */
 870                 return USB_STOR_TRANSPORT_GOOD;
 871         }
 872
 873         /* Check the auto request result */
 874         switch (srb->sense_buf[2]) {
 875         case 0x01:
 876                 /* Recovered Error */
 877                 return USB_STOR_TRANSPORT_GOOD;
 878                 break;
 879         case 0x02:
 880                 /* Not Ready */
 881                 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 882                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 883                                " 0x%02X (NOT READY)\n", srb->cmd[0],
 884                                 srb->sense_buf[0], srb->sense_buf[2],
 885                                 srb->sense_buf[12], srb->sense_buf[13]);
 886                         return USB_STOR_TRANSPORT_FAILED;
 887                 } else {
 888                         mdelay(100);
 889                         goto do_retry;
 890                 }
 891                 break;
 892         default:
 893                 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 894                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 895                                " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
 896                                 srb->sense_buf[2], srb->sense_buf[12],
 897                                 srb->sense_buf[13]);
 898                         return USB_STOR_TRANSPORT_FAILED;
 899                 } else
 900                         goto do_retry;
 901                 break;
 902         }
 903         return USB_STOR_TRANSPORT_FAILED;
 904 }
 905
 906
 907 static int usb_inquiry(ccb *srb, struct us_data *ss)
 908 {
 909         int retry, i;
 910         retry = 5;
 911         do {
 912                 memset(&srb->cmd[0], 0, 12);
 913                 srb->cmd[0] = SCSI_INQUIRY;
 914                 srb->cmd[1] = srb->lun << 5;
 915                 srb->cmd[4] = 36;
 916                 srb->datalen = 36;
 917                 srb->cmdlen = 12;
 918                 i = ss->transport(srb, ss);
 919                 USB_STOR_PRINTF("inquiry returns %d\n", i);
 920                 if (i == 0)
 921                         break;
 922         } while (--retry);
 923
 924         if (!retry) {
 925                 printf("error in inquiry\n");
 926                 return -1;
 927         }
 928         return 0;
 929 }
 930
 931 static int usb_request_sense(ccb *srb, struct us_data *ss)
 932 {
 933         char *ptr;
 934
 935         ptr = (char *)srb->pdata;
 936         memset(&srb->cmd[0], 0, 12);
 937         srb->cmd[0] = SCSI_REQ_SENSE;
 938         srb->cmd[1] = srb->lun << 5;
 939         srb->cmd[4] = 18;
 940         srb->datalen = 18;
 941         srb->pdata = &srb->sense_buf[0];
 942         srb->cmdlen = 12;
 943         ss->transport(srb, ss);
 944         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",
 945                         srb->sense_buf[2], srb->sense_buf[12],
 946                         srb->sense_buf[13]);
 947         srb->pdata = (uchar *)ptr;
 948         return 0;
 949 }
 950
 951 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
 952 {
 953         int retries = 10;
 954
 955         do {
 956                 memset(&srb->cmd[0], 0, 12);
 957                 srb->cmd[0] = SCSI_TST_U_RDY;
 958                 srb->cmd[1] = srb->lun << 5;
 959                 srb->datalen = 0;
 960                 srb->cmdlen = 12;
 961                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
 962                         return 0;
 963                 usb_request_sense(srb, ss);
 964                 mdelay(100);
 965         } while (retries--);
 966
 967         return -1;
 968 }
 969
 970 static int usb_read_capacity(ccb *srb, struct us_data *ss)
 971 {
 972         int retry;
 973         /* XXX retries */
 974         retry = 3;
 975         do {
 976                 memset(&srb->cmd[0], 0, 12);
 977                 srb->cmd[0] = SCSI_RD_CAPAC;
 978                 srb->cmd[1] = srb->lun << 5;
 979                 srb->datalen = 8;
 980                 srb->cmdlen = 12;
 981                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
 982                         return 0;
 983         } while (retry--);
 984
 985         return -1;
 986 }
 987
 988 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
 989                        unsigned short blocks)
 990 {
 991         memset(&srb->cmd[0], 0, 12);
 992         srb->cmd[0] = SCSI_READ10;
 993         srb->cmd[1] = srb->lun << 5;
 994         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
 995         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
 996         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
 997         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
 998         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
 999         srb->cmd[8] = (unsigned char) blocks & 0xff;
1000         srb->cmdlen = 12;
1001         USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks);
1002         return ss->transport(srb, ss);
1003 }
1004
1005 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
1006                         unsigned short blocks)
1007 {
1008         memset(&srb->cmd[0], 0, 12);
1009         srb->cmd[0] = SCSI_WRITE10;
1010         srb->cmd[1] = srb->lun << 5;
1011         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1012         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1013         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1014         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1015         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1016         srb->cmd[8] = (unsigned char) blocks & 0xff;
1017         srb->cmdlen = 12;
1018         USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks);
1019         return ss->transport(srb, ss);
1020 }
1021
1022
1023 #ifdef CONFIG_USB_BIN_FIXUP
1024 /*
1025  * Some USB storage devices queried for SCSI identification data respond with
1026  * binary strings, which if output to the console freeze the terminal. The
1027  * workaround is to modify the vendor and product strings read from such
1028  * device with proper values (as reported by 'usb info').
1029  *
1030  * Vendor and product length limits are taken from the definition of
1031  * block_dev_desc_t in include/part.h.
1032  */
1033 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1034                                 unsigned char vendor[],
1035                                 unsigned char product[]) {
1036         const unsigned char max_vendor_len = 40;
1037         const unsigned char max_product_len = 20;
1038         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1039                 strncpy((char *)vendor, "SMSC", max_vendor_len);
1040                 strncpy((char *)product, "Flash Media Cntrller",
1041                         max_product_len);
1042         }
1043 }
1044 #endif /* CONFIG_USB_BIN_FIXUP */
1045
1046 unsigned long usb_stor_read(int device, unsigned long blknr,
1047                             unsigned long blkcnt, void *buffer)
1048 {
1049         unsigned long start, blks, buf_addr, max_xfer_blk;
1050         unsigned short smallblks;
1051         struct usb_device *dev;
1052         struct us_data *ss;
1053         int retry, i;
1054         ccb *srb = &usb_ccb;
1055
1056         if (blkcnt == 0)
1057                 return 0;
1058
1059         device &= 0xff;
1060         /* Setup  device */
1061         USB_STOR_PRINTF("\nusb_read: dev %d \n", device);
1062         dev = NULL;
1063         for (i = 0; i < USB_MAX_DEVICE; i++) {
1064                 dev = usb_get_dev_index(i);
1065                 if (dev == NULL)
1066                         return 0;
1067                 if (dev->devnum == usb_dev_desc[device].target)
1068                         break;
1069         }
1070         ss = (struct us_data *)dev->privptr;
1071
1072         usb_disable_asynch(1); /* asynch transfer not allowed */
1073         srb->lun = usb_dev_desc[device].lun;
1074         buf_addr = (unsigned long)buffer;
1075         start = blknr;
1076         blks = blkcnt;
1077         if (usb_test_unit_ready(srb, ss)) {
1078                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1079                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1080                        srb->sense_buf[13]);
1081                 return 0;
1082         }
1083
1084         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx"
1085                         " buffer %lx\n", device, start, blks, buf_addr);
1086
1087         do {
1088                 /* XXX need some comment here */
1089                 retry = 2;
1090                 srb->pdata = (unsigned char *)buf_addr;
1091                 max_xfer_blk = USB_MAX_XFER_BLK(buf_addr,
1092                                                 usb_dev_desc[device].blksz);
1093                 if (blks > max_xfer_blk)
1094                         smallblks = (unsigned short) max_xfer_blk;
1095                 else
1096                         smallblks = (unsigned short) blks;
1097 retry_it:
1098                 if (smallblks == max_xfer_blk)
1099                         usb_show_progress();
1100                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1101                 srb->pdata = (unsigned char *)buf_addr;
1102                 if (usb_read_10(srb, ss, start, smallblks)) {
1103                         USB_STOR_PRINTF("Read ERROR\n");
1104                         usb_request_sense(srb, ss);
1105                         if (retry--)
1106                                 goto retry_it;
1107                         blkcnt -= blks;
1108                         break;
1109                 }
1110                 start += smallblks;
1111                 blks -= smallblks;
1112                 buf_addr += srb->datalen;
1113         } while (blks != 0);
1114
1115         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",
1116                         start, smallblks, buf_addr);
1117
1118         usb_disable_asynch(0); /* asynch transfer allowed */
1119         if (blkcnt >= max_xfer_blk)
1120                 debug("\n");
1121         return blkcnt;
1122 }
1123
1124 unsigned long usb_stor_write(int device, unsigned long blknr,
1125                                 unsigned long blkcnt, const void *buffer)
1126 {
1127         unsigned long start, blks, buf_addr, max_xfer_blk;
1128         unsigned short smallblks;
1129         struct usb_device *dev;
1130         struct us_data *ss;
1131         int retry, i;
1132         ccb *srb = &usb_ccb;
1133
1134         if (blkcnt == 0)
1135                 return 0;
1136
1137         device &= 0xff;
1138         /* Setup  device */
1139         USB_STOR_PRINTF("\nusb_write: dev %d \n", device);
1140         dev = NULL;
1141         for (i = 0; i < USB_MAX_DEVICE; i++) {
1142                 dev = usb_get_dev_index(i);
1143                 if (dev == NULL)
1144                         return 0;
1145                 if (dev->devnum == usb_dev_desc[device].target)
1146                         break;
1147         }
1148         ss = (struct us_data *)dev->privptr;
1149
1150         usb_disable_asynch(1); /* asynch transfer not allowed */
1151
1152         srb->lun = usb_dev_desc[device].lun;
1153         buf_addr = (unsigned long)buffer;
1154         start = blknr;
1155         blks = blkcnt;
1156         if (usb_test_unit_ready(srb, ss)) {
1157                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1158                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1159                         srb->sense_buf[13]);
1160                 return 0;
1161         }
1162
1163         USB_STOR_PRINTF("\nusb_write: dev %d startblk %lx, blccnt %lx"
1164                         " buffer %lx\n", device, start, blks, buf_addr);
1165
1166         do {
1167                 /* If write fails retry for max retry count else
1168                  * return with number of blocks written successfully.
1169                  */
1170                 retry = 2;
1171                 srb->pdata = (unsigned char *)buf_addr;
1172                 max_xfer_blk = USB_MAX_XFER_BLK(buf_addr,
1173                                                 usb_dev_desc[device].blksz);
1174                 if (blks > max_xfer_blk)
1175                         smallblks = (unsigned short) max_xfer_blk;
1176                 else
1177                         smallblks = (unsigned short) blks;
1178 retry_it:
1179                 if (smallblks == max_xfer_blk)
1180                         usb_show_progress();
1181                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1182                 srb->pdata = (unsigned char *)buf_addr;
1183                 if (usb_write_10(srb, ss, start, smallblks)) {
1184                         USB_STOR_PRINTF("Write ERROR\n");
1185                         usb_request_sense(srb, ss);
1186                         if (retry--)
1187                                 goto retry_it;
1188                         blkcnt -= blks;
1189                         break;
1190                 }
1191                 start += smallblks;
1192                 blks -= smallblks;
1193                 buf_addr += srb->datalen;
1194         } while (blks != 0);
1195
1196         USB_STOR_PRINTF("usb_write: end startblk %lx, blccnt %x buffer %lx\n",
1197                         start, smallblks, buf_addr);
1198
1199         usb_disable_asynch(0); /* asynch transfer allowed */
1200         if (blkcnt >= max_xfer_blk)
1201                 debug("\n");
1202         return blkcnt;
1203
1204 }
1205
1206 /* Probe to see if a new device is actually a Storage device */
1207 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1208                       struct us_data *ss)
1209 {
1210         struct usb_interface *iface;
1211         int i;
1212         unsigned int flags = 0;
1213
1214         int protocol = 0;
1215         int subclass = 0;
1216
1217         /* let's examine the device now */
1218         iface = &dev->config.if_desc[ifnum];
1219
1220 #if 0
1221         /* this is the place to patch some storage devices */
1222         USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1223                         dev->descriptor.idProduct);
1224
1225         if ((dev->descriptor.idVendor) == 0x066b &&
1226             (dev->descriptor.idProduct) == 0x0103) {
1227                 USB_STOR_PRINTF("patched for E-USB\n");
1228                 protocol = US_PR_CB;
1229                 subclass = US_SC_UFI;       /* an assumption */
1230         }
1231 #endif
1232
1233         if (dev->descriptor.bDeviceClass != 0 ||
1234                         iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1235                         iface->desc.bInterfaceSubClass < US_SC_MIN ||
1236                         iface->desc.bInterfaceSubClass > US_SC_MAX) {
1237                 /* if it's not a mass storage, we go no further */
1238                 return 0;
1239         }
1240
1241         memset(ss, 0, sizeof(struct us_data));
1242
1243         /* At this point, we know we've got a live one */
1244         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1245
1246         /* Initialize the us_data structure with some useful info */
1247         ss->flags = flags;
1248         ss->ifnum = ifnum;
1249         ss->pusb_dev = dev;
1250         ss->attention_done = 0;
1251
1252         /* If the device has subclass and protocol, then use that.  Otherwise,
1253          * take data from the specific interface.
1254          */
1255         if (subclass) {
1256                 ss->subclass = subclass;
1257                 ss->protocol = protocol;
1258         } else {
1259                 ss->subclass = iface->desc.bInterfaceSubClass;
1260                 ss->protocol = iface->desc.bInterfaceProtocol;
1261         }
1262
1263         /* set the handler pointers based on the protocol */
1264         USB_STOR_PRINTF("Transport: ");
1265         switch (ss->protocol) {
1266         case US_PR_CB:
1267                 USB_STOR_PRINTF("Control/Bulk\n");
1268                 ss->transport = usb_stor_CB_transport;
1269                 ss->transport_reset = usb_stor_CB_reset;
1270                 break;
1271
1272         case US_PR_CBI:
1273                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1274                 ss->transport = usb_stor_CB_transport;
1275                 ss->transport_reset = usb_stor_CB_reset;
1276                 break;
1277         case US_PR_BULK:
1278                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1279                 ss->transport = usb_stor_BBB_transport;
1280                 ss->transport_reset = usb_stor_BBB_reset;
1281                 break;
1282         default:
1283                 printf("USB Storage Transport unknown / not yet implemented\n");
1284                 return 0;
1285                 break;
1286         }
1287
1288         /*
1289          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1290          * An optional interrupt is OK (necessary for CBI protocol).
1291          * We will ignore any others.
1292          */
1293         for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1294                 /* is it an BULK endpoint? */
1295                 if ((iface->ep_desc[i].bmAttributes &
1296                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1297                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1298                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1299                                         USB_ENDPOINT_NUMBER_MASK;
1300                         else
1301                                 ss->ep_out =
1302                                         iface->ep_desc[i].bEndpointAddress &
1303                                         USB_ENDPOINT_NUMBER_MASK;
1304                 }
1305
1306                 /* is it an interrupt endpoint? */
1307                 if ((iface->ep_desc[i].bmAttributes &
1308                     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1309                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1310                                 USB_ENDPOINT_NUMBER_MASK;
1311                         ss->irqinterval = iface->ep_desc[i].bInterval;
1312                 }
1313         }
1314         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1315                   ss->ep_in, ss->ep_out, ss->ep_int);
1316
1317         /* Do some basic sanity checks, and bail if we find a problem */
1318         if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1319             !ss->ep_in || !ss->ep_out ||
1320             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1321                 USB_STOR_PRINTF("Problems with device\n");
1322                 return 0;
1323         }
1324         /* set class specific stuff */
1325         /* We only handle certain protocols.  Currently, these are
1326          * the only ones.
1327          * The SFF8070 accepts the requests used in u-boot
1328          */
1329         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1330             ss->subclass != US_SC_8070) {
1331                 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1332                 return 0;
1333         }
1334         if (ss->ep_int) {
1335                 /* we had found an interrupt endpoint, prepare irq pipe
1336                  * set up the IRQ pipe and handler
1337                  */
1338                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1339                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1340                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1341                 dev->irq_handle = usb_stor_irq;
1342         }
1343         dev->privptr = (void *)ss;
1344         return 1;
1345 }
1346
1347 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1348                       block_dev_desc_t *dev_desc)
1349 {
1350         unsigned char perq, modi;
1351         ALLOC_CACHE_ALIGN_BUFFER(unsigned long, cap, 2);
1352         ALLOC_CACHE_ALIGN_BUFFER(unsigned char, usb_stor_buf, 36);
1353         unsigned long *capacity, *blksz;
1354         ccb *pccb = &usb_ccb;
1355
1356         pccb->pdata = usb_stor_buf;
1357
1358         dev_desc->target = dev->devnum;
1359         pccb->lun = dev_desc->lun;
1360         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1361
1362         if (usb_inquiry(pccb, ss))
1363                 return -1;
1364
1365         perq = usb_stor_buf[0];
1366         modi = usb_stor_buf[1];
1367
1368         if ((perq & 0x1f) == 0x1f) {
1369                 /* skip unknown devices */
1370                 return 0;
1371         }
1372         if ((modi&0x80) == 0x80) {
1373                 /* drive is removable */
1374                 dev_desc->removable = 1;
1375         }
1376         memcpy(&dev_desc->vendor[0], (const void *) &usb_stor_buf[8], 8);
1377         memcpy(&dev_desc->product[0], (const void *) &usb_stor_buf[16], 16);
1378         memcpy(&dev_desc->revision[0], (const void *) &usb_stor_buf[32], 4);
1379         dev_desc->vendor[8] = 0;
1380         dev_desc->product[16] = 0;
1381         dev_desc->revision[4] = 0;
1382 #ifdef CONFIG_USB_BIN_FIXUP
1383         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1384                       (uchar *)dev_desc->product);
1385 #endif /* CONFIG_USB_BIN_FIXUP */
1386         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1387                         usb_stor_buf[3]);
1388         if (usb_test_unit_ready(pccb, ss)) {
1389                 printf("Device NOT ready\n"
1390                        "   Request Sense returned %02X %02X %02X\n",
1391                        pccb->sense_buf[2], pccb->sense_buf[12],
1392                        pccb->sense_buf[13]);
1393                 if (dev_desc->removable == 1) {
1394                         dev_desc->type = perq;
1395                         return 1;
1396                 }
1397                 return 0;
1398         }
1399         pccb->pdata = (unsigned char *)&cap[0];
1400         memset(pccb->pdata, 0, 8);
1401         if (usb_read_capacity(pccb, ss) != 0) {
1402                 printf("READ_CAP ERROR\n");
1403                 cap[0] = 2880;
1404                 cap[1] = 0x200;
1405         }
1406         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0],
1407                         cap[1]);
1408 #if 0
1409         if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1410                 cap[0] >>= 16;
1411 #endif
1412         cap[0] = cpu_to_be32(cap[0]);
1413         cap[1] = cpu_to_be32(cap[1]);
1414
1415         /* this assumes bigendian! */
1416         cap[0] += 1;
1417         capacity = &cap[0];
1418         blksz = &cap[1];
1419         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",
1420                         *capacity, *blksz);
1421         dev_desc->lba = *capacity;
1422         dev_desc->blksz = *blksz;
1423         dev_desc->type = perq;
1424         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1425         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1426
1427         init_part(dev_desc);
1428
1429         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1430         return 1;
1431 }