common/usb_storage.c

   1 /*
   2  * Most of this source has been derived from the Linux USB
   3  * project:
   4  *   (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
   5  *   (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org)
   6  *   (c) 1999 Michael Gee (michael@linuxspecific.com)
   7  *   (c) 2000 Yggdrasil Computing, Inc.
   8  *
   9  *
  10  * Adapted for U-Boot:
  11  *   (C) Copyright 2001 Denis Peter, MPL AG Switzerland
  12  *
  13  * For BBB support (C) Copyright 2003
  14  * Gary Jennejohn, DENX Software Engineering <gj@denx.de>
  15  *
  16  * BBB support based on /sys/dev/usb/umass.c from
  17  * FreeBSD.
  18  *
  19  * See file CREDITS for list of people who contributed to this
  20  * project.
  21  *
  22  * This program is free software; you can redistribute it and/or
  23  * modify it under the terms of the GNU General Public License as
  24  * published by the Free Software Foundation; either version 2 of
  25  * the License, or (at your option) any later version.
  26  *
  27  * This program is distributed in the hope that it will be useful,
  28  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  29  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  30  * GNU General Public License for more details.
  31  *
  32  * You should have received a copy of the GNU General Public License
  33  * along with this program; if not, write to the Free Software
  34  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  35  * MA 02111-1307 USA
  36  *
  37  */
  38
  39 /* Note:
  40  * Currently only the CBI transport protocoll has been implemented, and it
  41  * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
  42  * transport protocoll may work as well.
  43  */
  44 /*
  45  * New Note:
  46  * Support for USB Mass Storage Devices (BBB) has been added. It has
  47  * only been tested with USB memory sticks.
  48  * Nota bene: if you are using the BBB support with a little-endian
  49  * CPU then you MUST define LITTLEENDIAN in the configuration file!
  50  */
  51
  52
  53 #include <common.h>
  54 #include <command.h>
  55 #include <asm/byteorder.h>
  56 #include <asm/processor.h>
  57
  58
  59 #if defined(CONFIG_CMD_USB)
  60 #include <part.h>
  61 #include <usb.h>
  62
  63 #ifdef CONFIG_USB_STORAGE
  64
  65 #undef USB_STOR_DEBUG
  66 #undef BBB_COMDAT_TRACE
  67 #undef BBB_XPORT_TRACE
  68
  69 #ifdef  USB_STOR_DEBUG
  70 #define USB_STOR_PRINTF(fmt,args...)    printf (fmt ,##args)
  71 #else
  72 #define USB_STOR_PRINTF(fmt,args...)
  73 #endif
  74
  75 #include <scsi.h>
  76 /* direction table -- this indicates the direction of the data
  77  * transfer for each command code -- a 1 indicates input
  78  */
  79 unsigned char us_direction[256/8] = {
  80         0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
  81         0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
  82         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
  83         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
  84 };
  85 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
  86
  87 static unsigned char usb_stor_buf[512];
  88 static ccb usb_ccb;
  89
  90 /*
  91  * CBI style
  92  */
  93
  94 #define US_CBI_ADSC             0
  95
  96 /*
  97  * BULK only
  98  */
  99 #define US_BBB_RESET            0xff
 100 #define US_BBB_GET_MAX_LUN      0xfe
 101
 102 /* Command Block Wrapper */
 103 typedef struct {
 104         __u32           dCBWSignature;
 105 #       define CBWSIGNATURE     0x43425355
 106         __u32           dCBWTag;
 107         __u32           dCBWDataTransferLength;
 108         __u8            bCBWFlags;
 109 #       define CBWFLAGS_OUT     0x00
 110 #       define CBWFLAGS_IN      0x80
 111         __u8            bCBWLUN;
 112         __u8            bCDBLength;
 113 #       define CBWCDBLENGTH     16
 114         __u8            CBWCDB[CBWCDBLENGTH];
 115 } umass_bbb_cbw_t;
 116 #define UMASS_BBB_CBW_SIZE      31
 117 static __u32 CBWTag = 0;
 118
 119 /* Command Status Wrapper */
 120 typedef struct {
 121         __u32           dCSWSignature;
 122 #       define CSWSIGNATURE     0x53425355
 123         __u32           dCSWTag;
 124         __u32           dCSWDataResidue;
 125         __u8            bCSWStatus;
 126 #       define CSWSTATUS_GOOD   0x0
 127 #       define CSWSTATUS_FAILED 0x1
 128 #       define CSWSTATUS_PHASE  0x2
 129 } umass_bbb_csw_t;
 130 #define UMASS_BBB_CSW_SIZE      13
 131
 132 #define USB_MAX_STOR_DEV 5
 133 static int usb_max_devs = 0; /* number of highest available usb device */
 134
 135 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV];
 136
 137 struct us_data;
 138 typedef int (*trans_cmnd)(ccb*, struct us_data*);
 139 typedef int (*trans_reset)(struct us_data*);
 140
 141 struct us_data {
 142         struct usb_device       *pusb_dev;       /* this usb_device */
 143         unsigned int            flags;           /* from filter initially */
 144         unsigned char           ifnum;           /* interface number */
 145         unsigned char           ep_in;           /* in endpoint */
 146         unsigned char           ep_out;          /* out ....... */
 147         unsigned char           ep_int;          /* interrupt . */
 148         unsigned char           subclass;        /* as in overview */
 149         unsigned char           protocol;        /* .............. */
 150         unsigned char           attention_done;  /* force attn on first cmd */
 151         unsigned short  ip_data;         /* interrupt data */
 152         int                                                     action;          /* what to do */
 153         int                                                     ip_wanted; /* needed */
 154         int                                                     *irq_handle;     /* for USB int requests */
 155         unsigned int            irqpipe;         /* pipe for release_irq */
 156         unsigned char           irqmaxp;        /* max packed for irq Pipe */
 157         unsigned char   irqinterval; /* Intervall for IRQ Pipe */
 158         ccb                                                     *srb;            /* current srb */
 159         trans_reset                     transport_reset; /* reset routine */
 160         trans_cmnd                      transport; /* transport routine */
 161 };
 162
 163 static struct us_data usb_stor[USB_MAX_STOR_DEV];
 164
 165
 166 #define USB_STOR_TRANSPORT_GOOD    0
 167 #define USB_STOR_TRANSPORT_FAILED -1
 168 #define USB_STOR_TRANSPORT_ERROR  -2
 169
 170
 171 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, block_dev_desc_t *dev_desc);
 172 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,struct us_data *ss);
 173 unsigned long usb_stor_read(int device, unsigned long blknr, unsigned long blkcnt, void *buffer);
 174 struct usb_device * usb_get_dev_index(int index);
 175 void uhci_show_temp_int_td(void);
 176
 177 block_dev_desc_t *usb_stor_get_dev(int index)
 178 {
 179         return (index < USB_MAX_STOR_DEV) ? &usb_dev_desc[index] : NULL;
 180 }
 181
 182
 183 void usb_show_progress(void)
 184 {
 185         printf(".");
 186 }
 187
 188 /*********************************************************************************
 189  * show info on storage devices; 'usb start/init' must be invoked earlier
 190  * as we only retrieve structures populated during devices initialization
 191  */
 192 int usb_stor_info(void)
 193 {
 194         int i;
 195
 196         if (usb_max_devs > 0) {
 197                 for (i = 0; i < usb_max_devs; i++) {
 198                         printf ("  Device %d: ", i);
 199                         dev_print(&usb_dev_desc[i]);
 200                 }
 201                 return 0;
 202         }
 203
 204         printf("No storage devices, perhaps not 'usb start'ed..?\n");
 205         return 1;
 206 }
 207
 208 /*********************************************************************************
 209  * scan the usb and reports device info
 210  * to the user if mode = 1
 211  * returns current device or -1 if no
 212  */
 213 int usb_stor_scan(int mode)
 214 {
 215         unsigned char i;
 216         struct usb_device *dev;
 217
 218         /* GJ */
 219         memset(usb_stor_buf, 0, sizeof(usb_stor_buf));
 220
 221         if(mode==1) {
 222                 printf("       scanning bus for storage devices... ");
 223         }
 224         usb_disable_asynch(1); /* asynch transfer not allowed */
 225
 226         for(i=0;i<USB_MAX_STOR_DEV;i++) {
 227                 memset(&usb_dev_desc[i],0,sizeof(block_dev_desc_t));
 228                 usb_dev_desc[i].target=0xff;
 229                 usb_dev_desc[i].if_type=IF_TYPE_USB;
 230                 usb_dev_desc[i].dev=i;
 231                 usb_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
 232                 usb_dev_desc[i].block_read=usb_stor_read;
 233         }
 234
 235         usb_max_devs=0;
 236         for(i=0;i<USB_MAX_DEVICE;i++) {
 237                 dev=usb_get_dev_index(i); /* get device */
 238                 USB_STOR_PRINTF("i=%d\n",i);
 239                 if(dev==NULL) {
 240                         break; /* no more devices avaiable */
 241                 }
 242                 if(usb_storage_probe(dev,0,&usb_stor[usb_max_devs])) { /* ok, it is a storage devices */
 243                         /* get info and fill it in */
 244                         if(usb_stor_get_info(dev, &usb_stor[usb_max_devs], &usb_dev_desc[usb_max_devs]))
 245                                 usb_max_devs++;
 246                 } /* if storage device */
 247                 if(usb_max_devs==USB_MAX_STOR_DEV) {
 248                         printf("max USB Storage Device reached: %d stopping\n",usb_max_devs);
 249                         break;
 250                 }
 251         } /* for */
 252
 253         usb_disable_asynch(0); /* asynch transfer allowed */
 254         printf("%d Storage Device(s) found\n", usb_max_devs);
 255         if(usb_max_devs>0)
 256                 return 0;
 257         else
 258                 return-1;
 259 }
 260
 261 static int usb_stor_irq(struct usb_device *dev)
 262 {
 263         struct us_data *us;
 264         us=(struct us_data *)dev->privptr;
 265
 266         if(us->ip_wanted) {
 267                 us->ip_wanted=0;
 268         }
 269         return 0;
 270 }
 271
 272
 273 #ifdef  USB_STOR_DEBUG
 274
 275 static void usb_show_srb(ccb * pccb)
 276 {
 277         int i;
 278         printf("SRB: len %d datalen 0x%lX\n ",pccb->cmdlen,pccb->datalen);
 279         for(i=0;i<12;i++) {
 280                 printf("%02X ",pccb->cmd[i]);
 281         }
 282         printf("\n");
 283 }
 284
 285 static void display_int_status(unsigned long tmp)
 286 {
 287         printf("Status: %s %s %s %s %s %s %s\n",
 288                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 289                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 290                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 291                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 292                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 293                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 294                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 295 }
 296 #endif
 297 /***********************************************************************
 298  * Data transfer routines
 299  ***********************************************************************/
 300
 301 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 302 {
 303         int max_size;
 304         int this_xfer;
 305         int result;
 306         int partial;
 307         int maxtry;
 308         int stat;
 309
 310         /* determine the maximum packet size for these transfers */
 311         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 312
 313         /* while we have data left to transfer */
 314         while (length) {
 315
 316                 /* calculate how long this will be -- maximum or a remainder */
 317                 this_xfer = length > max_size ? max_size : length;
 318                 length -= this_xfer;
 319
 320                 /* setup the retry counter */
 321                 maxtry = 10;
 322
 323                 /* set up the transfer loop */
 324                 do {
 325                         /* transfer the data */
 326                         USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
 327                                   (unsigned int)buf, this_xfer, 11 - maxtry);
 328                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 329                                               this_xfer, &partial, USB_CNTL_TIMEOUT*5);
 330                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
 331                                   result, partial, this_xfer);
 332                         if(us->pusb_dev->status!=0) {
 333                                 /* if we stall, we need to clear it before we go on */
 334 #ifdef USB_STOR_DEBUG
 335                                 display_int_status(us->pusb_dev->status);
 336 #endif
 337                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 338                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
 339                                         stat = us->pusb_dev->status;
 340                                         usb_clear_halt(us->pusb_dev, pipe);
 341                                         us->pusb_dev->status=stat;
 342                                         if(this_xfer == partial) {
 343                                                 USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n",us->pusb_dev->status);
 344                                                 return 0;
 345                                         }
 346                                         else
 347                                                 return result;
 348                                 }
 349                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 350                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
 351                                         return result;
 352                                 }
 353                                 if(this_xfer == partial) {
 354                                         USB_STOR_PRINTF("bulk transferred with error %d, but data ok\n",us->pusb_dev->status);
 355                                         return 0;
 356                                 }
 357                                 /* if our try counter reaches 0, bail out */
 358                                 USB_STOR_PRINTF("bulk transferred with error %d, data %d\n",us->pusb_dev->status,partial);
 359                                 if (!maxtry--)
 360                                                 return result;
 361                         }
 362                         /* update to show what data was transferred */
 363                         this_xfer -= partial;
 364                         buf += partial;
 365                         /* continue until this transfer is done */
 366                 } while ( this_xfer );
 367         }
 368
 369         /* if we get here, we're done and successful */
 370         return 0;
 371 }
 372
 373 static int usb_stor_BBB_reset(struct us_data *us)
 374 {
 375         int result;
 376         unsigned int pipe;
 377
 378         /*
 379          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 380          *
 381          * For Reset Recovery the host shall issue in the following order:
 382          * a) a Bulk-Only Mass Storage Reset
 383          * b) a Clear Feature HALT to the Bulk-In endpoint
 384          * c) a Clear Feature HALT to the Bulk-Out endpoint
 385          *
 386          * This is done in 3 steps.
 387          *
 388          * If the reset doesn't succeed, the device should be port reset.
 389          *
 390          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 391          */
 392         USB_STOR_PRINTF("BBB_reset\n");
 393         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 394                                  US_BBB_RESET, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 395                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT*5);
 396
 397         if((result < 0) && (us->pusb_dev->status & USB_ST_STALLED))
 398         {
 399                 USB_STOR_PRINTF("RESET:stall\n");
 400                 return -1;
 401         }
 402
 403         /* long wait for reset */
 404         wait_ms(150);
 405         USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n",result,us->pusb_dev->status);
 406         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 407         result = usb_clear_halt(us->pusb_dev, pipe);
 408         /* long wait for reset */
 409         wait_ms(150);
 410         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n",result,us->pusb_dev->status);
 411         /* long wait for reset */
 412         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 413         result = usb_clear_halt(us->pusb_dev, pipe);
 414         wait_ms(150);
 415         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing OUT endpoint\n",result,us->pusb_dev->status);
 416         USB_STOR_PRINTF("BBB_reset done\n");
 417         return 0;
 418 }
 419
 420 /* FIXME: this reset function doesn't really reset the port, and it
 421  * should. Actually it should probably do what it's doing here, and
 422  * reset the port physically
 423  */
 424 static int usb_stor_CB_reset(struct us_data *us)
 425 {
 426         unsigned char cmd[12];
 427         int result;
 428
 429         USB_STOR_PRINTF("CB_reset\n");
 430         memset(cmd, 0xFF, sizeof(cmd));
 431         cmd[0] = SCSI_SEND_DIAG;
 432         cmd[1] = 4;
 433         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 434                                  US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 435                                  0, us->ifnum, cmd, sizeof(cmd), USB_CNTL_TIMEOUT*5);
 436
 437         /* long wait for reset */
 438         wait_ms(1500);
 439         USB_STOR_PRINTF("CB_reset result %d: status %X clearing endpoint halt\n",result,us->pusb_dev->status);
 440         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 441         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 442
 443         USB_STOR_PRINTF("CB_reset done\n");
 444         return 0;
 445 }
 446
 447 /*
 448  * Set up the command for a BBB device. Note that the actual SCSI
 449  * command is copied into cbw.CBWCDB.
 450  */
 451 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 452 {
 453         int result;
 454         int actlen;
 455         int dir_in;
 456         unsigned int pipe;
 457         umass_bbb_cbw_t cbw;
 458
 459         dir_in = US_DIRECTION(srb->cmd[0]);
 460
 461 #ifdef BBB_COMDAT_TRACE
 462         printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n", dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, srb->pdata);
 463         if (srb->cmdlen) {
 464                 for(result = 0;result < srb->cmdlen;result++)
 465                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 466                 printf("\n");
 467         }
 468 #endif
 469         /* sanity checks */
 470         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 471                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
 472                 return -1;
 473         }
 474
 475         /* always OUT to the ep */
 476         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 477
 478         cbw.dCBWSignature = cpu_to_le32(CBWSIGNATURE);
 479         cbw.dCBWTag = cpu_to_le32(CBWTag++);
 480         cbw.dCBWDataTransferLength = cpu_to_le32(srb->datalen);
 481         cbw.bCBWFlags = (dir_in? CBWFLAGS_IN : CBWFLAGS_OUT);
 482         cbw.bCBWLUN = srb->lun;
 483         cbw.bCDBLength = srb->cmdlen;
 484         /* copy the command data into the CBW command data buffer */
 485         /* DST SRC LEN!!! */
 486         memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen);
 487         result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE, &actlen, USB_CNTL_TIMEOUT*5);
 488         if (result < 0)
 489                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 490         return result;
 491 }
 492
 493 /* FIXME: we also need a CBI_command which sets up the completion
 494  * interrupt, and waits for it
 495  */
 496 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 497 {
 498         int result = 0;
 499         int dir_in,retry;
 500         unsigned int pipe;
 501         unsigned long status;
 502
 503         retry=5;
 504                 dir_in=US_DIRECTION(srb->cmd[0]);
 505
 506                 if(dir_in)
 507                         pipe=usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 508                 else
 509                         pipe=usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 510         while(retry--) {
 511                 USB_STOR_PRINTF("CBI gets a command: Try %d\n",5-retry);
 512 #ifdef USB_STOR_DEBUG
 513                 usb_show_srb(srb);
 514 #endif
 515                 /* let's send the command via the control pipe */
 516                 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 517                                          US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 518                                          0, us->ifnum,
 519                                          srb->cmd, srb->cmdlen, USB_CNTL_TIMEOUT*5);
 520                 USB_STOR_PRINTF("CB_transport: control msg returned %d, status %X\n",result,us->pusb_dev->status);
 521                 /* check the return code for the command */
 522                 if (result < 0) {
 523                         if(us->pusb_dev->status & USB_ST_STALLED) {
 524                                 status=us->pusb_dev->status;
 525                                 USB_STOR_PRINTF(" stall during command found, clear pipe\n");
 526                                 usb_clear_halt(us->pusb_dev,  usb_sndctrlpipe(us->pusb_dev,0));
 527                                 us->pusb_dev->status=status;
 528                         }
 529                         USB_STOR_PRINTF(" error during command %02X Stat = %X\n",srb->cmd[0],us->pusb_dev->status);
 530                         return result;
 531                 }
 532                 /* transfer the data payload for this command, if one exists*/
 533
 534                 USB_STOR_PRINTF("CB_transport: control msg returned %d, direction is %s to go 0x%lx\n",result,dir_in ? "IN" : "OUT",srb->datalen);
 535                 if (srb->datalen) {
 536                         result = us_one_transfer(us, pipe, (char *)srb->pdata,srb->datalen);
 537                         USB_STOR_PRINTF("CBI attempted to transfer data, result is %d status %lX, len %d\n", result,us->pusb_dev->status,us->pusb_dev->act_len);
 538                         if(!(us->pusb_dev->status & USB_ST_NAK_REC))
 539                                 break;
 540                 } /* if (srb->datalen) */
 541                 else
 542                         break;
 543         }
 544         /* return result */
 545
 546         return result;
 547 }
 548
 549
 550 int usb_stor_CBI_get_status (ccb * srb, struct us_data *us)
 551 {
 552         int timeout;
 553
 554         us->ip_wanted = 1;
 555         submit_int_msg (us->pusb_dev, us->irqpipe,
 556                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 557         timeout = 1000;
 558         while (timeout--) {
 559                 if ((volatile int *) us->ip_wanted == 0)
 560                         break;
 561                 wait_ms (10);
 562         }
 563         if (us->ip_wanted) {
 564                 printf ("       Did not get interrupt on CBI\n");
 565                 us->ip_wanted = 0;
 566                 return USB_STOR_TRANSPORT_ERROR;
 567         }
 568         USB_STOR_PRINTF
 569                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
 570                  us->ip_data, us->pusb_dev->irq_act_len,
 571                  us->pusb_dev->irq_status);
 572         /* UFI gives us ASC and ASCQ, like a request sense */
 573         if (us->subclass == US_SC_UFI) {
 574                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 575                     srb->cmd[0] == SCSI_INQUIRY)
 576                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 577                 else if (us->ip_data)
 578                         return USB_STOR_TRANSPORT_FAILED;
 579                 else
 580                         return USB_STOR_TRANSPORT_GOOD;
 581         }
 582         /* otherwise, we interpret the data normally */
 583         switch (us->ip_data) {
 584         case 0x0001:
 585                 return USB_STOR_TRANSPORT_GOOD;
 586         case 0x0002:
 587                 return USB_STOR_TRANSPORT_FAILED;
 588         default:
 589                 return USB_STOR_TRANSPORT_ERROR;
 590         }                       /* switch */
 591         return USB_STOR_TRANSPORT_ERROR;
 592 }
 593
 594 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 595 #define USB_TRANSPORT_NOT_READY_RETRY 10
 596
 597 /* clear a stall on an endpoint - special for BBB devices */
 598 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 599 {
 600         int result;
 601
 602         /* ENDPOINT_HALT = 0, so set value to 0 */
 603         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 604                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 605                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT*5);
 606         return result;
 607 }
 608
 609 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 610 {
 611         int result, retry;
 612         int dir_in;
 613         int actlen, data_actlen;
 614         unsigned int pipe, pipein, pipeout;
 615         umass_bbb_csw_t csw;
 616 #ifdef BBB_XPORT_TRACE
 617         unsigned char *ptr;
 618         int index;
 619 #endif
 620
 621         dir_in = US_DIRECTION(srb->cmd[0]);
 622
 623         /* COMMAND phase */
 624         USB_STOR_PRINTF("COMMAND phase\n");
 625         result = usb_stor_BBB_comdat(srb, us);
 626         if (result < 0) {
 627                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
 628                         us->pusb_dev->status);
 629                 usb_stor_BBB_reset(us);
 630                 return USB_STOR_TRANSPORT_FAILED;
 631         }
 632         wait_ms(5);
 633         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 634         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 635         /* DATA phase + error handling */
 636         data_actlen = 0;
 637         /* no data, go immediately to the STATUS phase */
 638         if (srb->datalen == 0)
 639                 goto st;
 640         USB_STOR_PRINTF("DATA phase\n");
 641         if (dir_in)
 642                 pipe = pipein;
 643         else
 644                 pipe = pipeout;
 645         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, &data_actlen, USB_CNTL_TIMEOUT*5);
 646         /* special handling of STALL in DATA phase */
 647         if((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 648                 USB_STOR_PRINTF("DATA:stall\n");
 649                 /* clear the STALL on the endpoint */
 650                 result = usb_stor_BBB_clear_endpt_stall(us, dir_in? us->ep_in : us->ep_out);
 651                 if (result >= 0)
 652                         /* continue on to STATUS phase */
 653                         goto st;
 654         }
 655         if (result < 0) {
 656                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 657                         us->pusb_dev->status);
 658                 usb_stor_BBB_reset(us);
 659                 return USB_STOR_TRANSPORT_FAILED;
 660         }
 661 #ifdef BBB_XPORT_TRACE
 662         for (index = 0; index < data_actlen; index++)
 663                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 664         printf("\n");
 665 #endif
 666         /* STATUS phase + error handling */
 667    st:
 668         retry = 0;
 669    again:
 670         USB_STOR_PRINTF("STATUS phase\n");
 671         result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE,
 672                                 &actlen, USB_CNTL_TIMEOUT*5);
 673
 674         /* special handling of STALL in STATUS phase */
 675         if((result < 0) && (retry < 1) && (us->pusb_dev->status & USB_ST_STALLED)) {
 676                 USB_STOR_PRINTF("STATUS:stall\n");
 677                 /* clear the STALL on the endpoint */
 678                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 679                 if (result >= 0 && (retry++ < 1))
 680                         /* do a retry */
 681                         goto again;
 682         }
 683         if (result < 0) {
 684                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 685                         us->pusb_dev->status);
 686                 usb_stor_BBB_reset(us);
 687                 return USB_STOR_TRANSPORT_FAILED;
 688         }
 689 #ifdef BBB_XPORT_TRACE
 690         ptr = (unsigned char *)&csw;
 691         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 692                 printf("ptr[%d] %#x ", index, ptr[index]);
 693         printf("\n");
 694 #endif
 695         /* misuse pipe to get the residue */
 696         pipe = le32_to_cpu(csw.dCSWDataResidue);
 697         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 698                 pipe = srb->datalen - data_actlen;
 699         if (CSWSIGNATURE != le32_to_cpu(csw.dCSWSignature)) {
 700                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
 701                 usb_stor_BBB_reset(us);
 702                 return USB_STOR_TRANSPORT_FAILED;
 703         } else if ((CBWTag - 1) != le32_to_cpu(csw.dCSWTag)) {
 704                 USB_STOR_PRINTF("!Tag\n");
 705                 usb_stor_BBB_reset(us);
 706                 return USB_STOR_TRANSPORT_FAILED;
 707         } else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
 708                 USB_STOR_PRINTF(">PHASE\n");
 709                 usb_stor_BBB_reset(us);
 710                 return USB_STOR_TRANSPORT_FAILED;
 711         } else if (csw.bCSWStatus == CSWSTATUS_PHASE) {
 712                 USB_STOR_PRINTF("=PHASE\n");
 713                 usb_stor_BBB_reset(us);
 714                 return USB_STOR_TRANSPORT_FAILED;
 715         } else if (data_actlen > srb->datalen) {
 716                 USB_STOR_PRINTF("transferred %dB instead of %dB\n",
 717                         data_actlen, srb->datalen);
 718                 return USB_STOR_TRANSPORT_FAILED;
 719         } else if (csw.bCSWStatus == CSWSTATUS_FAILED) {
 720                 USB_STOR_PRINTF("FAILED\n");
 721                 return USB_STOR_TRANSPORT_FAILED;
 722         }
 723
 724         return result;
 725 }
 726
 727 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 728 {
 729         int result,status;
 730         ccb *psrb;
 731         ccb reqsrb;
 732         int retry,notready;
 733
 734         psrb=&reqsrb;
 735         status=USB_STOR_TRANSPORT_GOOD;
 736         retry=0;
 737         notready=0;
 738         /* issue the command */
 739 do_retry:
 740         result=usb_stor_CB_comdat(srb,us);
 741         USB_STOR_PRINTF("command / Data returned %d, status %X\n",result,us->pusb_dev->status);
 742         /* if this is an CBI Protocol, get IRQ */
 743         if(us->protocol==US_PR_CBI) {
 744                 status=usb_stor_CBI_get_status(srb,us);
 745                 /* if the status is error, report it */
 746                 if(status==USB_STOR_TRANSPORT_ERROR) {
 747                         USB_STOR_PRINTF(" USB CBI Command Error\n");
 748                         return status;
 749                 }
 750                 srb->sense_buf[12]=(unsigned char)(us->ip_data>>8);
 751                 srb->sense_buf[13]=(unsigned char)(us->ip_data&0xff);
 752                 if(!us->ip_data) {
 753                 /* if the status is good, report it */
 754                         if(status==USB_STOR_TRANSPORT_GOOD) {
 755                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
 756                                 return status;
 757                         }
 758                 }
 759         }
 760         /* do we have to issue an auto request? */
 761         /* HERE we have to check the result */
 762         if((result<0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 763                 USB_STOR_PRINTF("ERROR %X\n",us->pusb_dev->status);
 764                 us->transport_reset(us);
 765                 return USB_STOR_TRANSPORT_ERROR;
 766         }
 767         if((us->protocol==US_PR_CBI) &&
 768                         ((srb->cmd[0]==SCSI_REQ_SENSE) ||
 769                         (srb->cmd[0]==SCSI_INQUIRY))) { /* do not issue an autorequest after request sense */
 770                 USB_STOR_PRINTF("No auto request and good\n");
 771                 return USB_STOR_TRANSPORT_GOOD;
 772         }
 773         /* issue an request_sense */
 774         memset(&psrb->cmd[0],0,12);
 775         psrb->cmd[0]=SCSI_REQ_SENSE;
 776         psrb->cmd[1]=srb->lun<<5;
 777         psrb->cmd[4]=18;
 778         psrb->datalen=18;
 779         psrb->pdata=&srb->sense_buf[0];
 780         psrb->cmdlen=12;
 781         /* issue the command */
 782         result=usb_stor_CB_comdat(psrb,us);
 783         USB_STOR_PRINTF("auto request returned %d\n",result);
 784         /* if this is an CBI Protocol, get IRQ */
 785         if(us->protocol==US_PR_CBI) {
 786                 status=usb_stor_CBI_get_status(psrb,us);
 787         }
 788         if((result<0)&&!(us->pusb_dev->status & USB_ST_STALLED)) {
 789                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n",us->pusb_dev->status);
 790                 return USB_STOR_TRANSPORT_ERROR;
 791         }
 792         USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 793         /* Check the auto request result */
 794         if((srb->sense_buf[2]==0) &&
 795                  (srb->sense_buf[12]==0) &&
 796                  (srb->sense_buf[13]==0)) /* ok, no sense */
 797                 return USB_STOR_TRANSPORT_GOOD;
 798         /* Check the auto request result */
 799         switch(srb->sense_buf[2]) {
 800         case 0x01: /* Recovered Error */
 801                 return USB_STOR_TRANSPORT_GOOD;
 802                 break;
 803         case 0x02: /* Not Ready */
 804                 if(notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 805                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X 0x%02X (NOT READY)\n",
 806                                 srb->cmd[0],srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 807                         return USB_STOR_TRANSPORT_FAILED;
 808                 } else {
 809                         wait_ms(100);
 810                         goto do_retry;
 811                 }
 812                 break;
 813         default:
 814                 if(retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 815                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 816                                 srb->cmd[0],srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 817                         return USB_STOR_TRANSPORT_FAILED;
 818                 } else {
 819                         goto do_retry;
 820                 }
 821                 break;
 822         }
 823         return USB_STOR_TRANSPORT_FAILED;
 824 }
 825
 826
 827 static int usb_inquiry(ccb *srb,struct us_data *ss)
 828 {
 829         int retry,i;
 830         retry=5;
 831         do {
 832                 memset(&srb->cmd[0],0,12);
 833                 srb->cmd[0]=SCSI_INQUIRY;
 834                 srb->cmd[1]=srb->lun<<5;
 835                 srb->cmd[4]=36;
 836                 srb->datalen=36;
 837                 srb->cmdlen=12;
 838                 i=ss->transport(srb,ss);
 839                 USB_STOR_PRINTF("inquiry returns %d\n",i);
 840                 if(i==0)
 841                         break;
 842         } while(retry--);
 843
 844         if(!retry) {
 845                 printf("error in inquiry\n");
 846                 return -1;
 847         }
 848         return 0;
 849 }
 850
 851 static int usb_request_sense(ccb *srb,struct us_data *ss)
 852 {
 853         char *ptr;
 854
 855         ptr=(char *)srb->pdata;
 856         memset(&srb->cmd[0],0,12);
 857         srb->cmd[0]=SCSI_REQ_SENSE;
 858         srb->cmd[1]=srb->lun<<5;
 859         srb->cmd[4]=18;
 860         srb->datalen=18;
 861         srb->pdata=&srb->sense_buf[0];
 862         srb->cmdlen=12;
 863         ss->transport(srb,ss);
 864         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 865         srb->pdata=(uchar *)ptr;
 866         return 0;
 867 }
 868
 869 static int usb_test_unit_ready(ccb *srb,struct us_data *ss)
 870 {
 871         int retries = 10;
 872
 873         do {
 874                 memset(&srb->cmd[0],0,12);
 875                 srb->cmd[0]=SCSI_TST_U_RDY;
 876                 srb->cmd[1]=srb->lun<<5;
 877                 srb->datalen=0;
 878                 srb->cmdlen=12;
 879                 if(ss->transport(srb,ss)==USB_STOR_TRANSPORT_GOOD) {
 880                         return 0;
 881                 }
 882                 usb_request_sense (srb, ss);
 883                 wait_ms (100);
 884         } while(retries--);
 885
 886         return -1;
 887 }
 888
 889 static int usb_read_capacity(ccb *srb,struct us_data *ss)
 890 {
 891         int retry;
 892         retry = 3; /* retries */
 893         do {
 894                 memset(&srb->cmd[0],0,12);
 895                 srb->cmd[0]=SCSI_RD_CAPAC;
 896                 srb->cmd[1]=srb->lun<<5;
 897                 srb->datalen=8;
 898                 srb->cmdlen=12;
 899                 if(ss->transport(srb,ss)==USB_STOR_TRANSPORT_GOOD) {
 900                         return 0;
 901                 }
 902         } while(retry--);
 903
 904         return -1;
 905 }
 906
 907 static int usb_read_10(ccb *srb,struct us_data *ss, unsigned long start, unsigned short blocks)
 908 {
 909         memset(&srb->cmd[0],0,12);
 910         srb->cmd[0]=SCSI_READ10;
 911         srb->cmd[1]=srb->lun<<5;
 912         srb->cmd[2]=((unsigned char) (start>>24))&0xff;
 913         srb->cmd[3]=((unsigned char) (start>>16))&0xff;
 914         srb->cmd[4]=((unsigned char) (start>>8))&0xff;
 915         srb->cmd[5]=((unsigned char) (start))&0xff;
 916         srb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 917         srb->cmd[8]=(unsigned char) blocks & 0xff;
 918         srb->cmdlen=12;
 919         USB_STOR_PRINTF("read10: start %lx blocks %x\n",start,blocks);
 920         return ss->transport(srb,ss);
 921 }
 922
 923
 924 #ifdef CONFIG_USB_BIN_FIXUP
 925 /*
 926  * Some USB storage devices queried for SCSI identification data respond with
 927  * binary strings, which if output to the console freeze the terminal. The
 928  * workaround is to modify the vendor and product strings read from such
 929  * device with proper values (as reported by 'usb info').
 930  *
 931  * Vendor and product length limits are taken from the definition of
 932  * block_dev_desc_t in include/part.h.
 933  */
 934 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
 935                                 unsigned char vendor[],
 936                                 unsigned char product[]) {
 937         const unsigned char max_vendor_len = 40;
 938         const unsigned char max_product_len = 20;
 939         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
 940                 strncpy ((char *)vendor, "SMSC", max_vendor_len);
 941                 strncpy ((char *)product, "Flash Media Cntrller", max_product_len);
 942         }
 943 }
 944 #endif /* CONFIG_USB_BIN_FIXUP */
 945
 946 #define USB_MAX_READ_BLK 20
 947
 948 unsigned long usb_stor_read(int device, unsigned long blknr, unsigned long blkcnt, void *buffer)
 949 {
 950         unsigned long start,blks, buf_addr;
 951         unsigned short smallblks;
 952         struct usb_device *dev;
 953         int retry,i;
 954         ccb *srb = &usb_ccb;
 955
 956         if (blkcnt == 0)
 957                 return 0;
 958
 959         device &= 0xff;
 960         /* Setup  device
 961          */
 962         USB_STOR_PRINTF("\nusb_read: dev %d \n",device);
 963         dev=NULL;
 964         for(i=0;i<USB_MAX_DEVICE;i++) {
 965                 dev=usb_get_dev_index(i);
 966                 if(dev==NULL) {
 967                         return 0;
 968                 }
 969                 if(dev->devnum==usb_dev_desc[device].target)
 970                         break;
 971         }
 972
 973         usb_disable_asynch(1); /* asynch transfer not allowed */
 974         srb->lun=usb_dev_desc[device].lun;
 975         buf_addr=(unsigned long)buffer;
 976         start=blknr;
 977         blks=blkcnt;
 978         if(usb_test_unit_ready(srb,(struct us_data *)dev->privptr)) {
 979                 printf("Device NOT ready\n   Request Sense returned %02X %02X %02X\n",
 980                         srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 981                 return 0;
 982         }
 983         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks, buf_addr);
 984         do {
 985                 retry=2;
 986                 srb->pdata=(unsigned char *)buf_addr;
 987                 if(blks>USB_MAX_READ_BLK) {
 988                         smallblks=USB_MAX_READ_BLK;
 989                 } else {
 990                         smallblks=(unsigned short) blks;
 991                 }
 992 retry_it:
 993                 if(smallblks==USB_MAX_READ_BLK)
 994                         usb_show_progress();
 995                 srb->datalen=usb_dev_desc[device].blksz * smallblks;
 996                 srb->pdata=(unsigned char *)buf_addr;
 997                 if(usb_read_10(srb,(struct us_data *)dev->privptr, start, smallblks)) {
 998                         USB_STOR_PRINTF("Read ERROR\n");
 999                         usb_request_sense(srb,(struct us_data *)dev->privptr);
1000                         if(retry--)
1001                                 goto retry_it;
1002                         blkcnt-=blks;
1003                         break;
1004                 }
1005                 start+=smallblks;
1006                 blks-=smallblks;
1007                 buf_addr+=srb->datalen;
1008         } while(blks!=0);
1009         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
1010         usb_disable_asynch(0); /* asynch transfer allowed */
1011         if(blkcnt>=USB_MAX_READ_BLK)
1012                 printf("\n");
1013         return(blkcnt);
1014 }
1015
1016
1017 /* Probe to see if a new device is actually a Storage device */
1018 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,struct us_data *ss)
1019 {
1020         struct usb_interface_descriptor *iface;
1021         int i;
1022         unsigned int flags = 0;
1023
1024         int protocol = 0;
1025         int subclass = 0;
1026
1027         /* let's examine the device now */
1028         iface = &dev->config.if_desc[ifnum];
1029
1030 #if 0
1031         /* this is the place to patch some storage devices */
1032         USB_STOR_PRINTF("iVendor %X iProduct %X\n",dev->descriptor.idVendor,dev->descriptor.idProduct);
1033         if ((dev->descriptor.idVendor) == 0x066b && (dev->descriptor.idProduct) == 0x0103) {
1034                 USB_STOR_PRINTF("patched for E-USB\n");
1035                 protocol = US_PR_CB;
1036                 subclass = US_SC_UFI;       /* an assumption */
1037         }
1038 #endif
1039
1040         if (dev->descriptor.bDeviceClass != 0 ||
1041                         iface->bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1042                         iface->bInterfaceSubClass < US_SC_MIN ||
1043                         iface->bInterfaceSubClass > US_SC_MAX) {
1044                 /* if it's not a mass storage, we go no further */
1045                 return 0;
1046         }
1047
1048         memset(ss, 0, sizeof(struct us_data));
1049
1050         /* At this point, we know we've got a live one */
1051         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1052
1053         /* Initialize the us_data structure with some useful info */
1054         ss->flags = flags;
1055         ss->ifnum = ifnum;
1056         ss->pusb_dev = dev;
1057         ss->attention_done = 0;
1058
1059         /* If the device has subclass and protocol, then use that.  Otherwise,
1060          * take data from the specific interface.
1061          */
1062         if (subclass) {
1063                 ss->subclass = subclass;
1064                 ss->protocol = protocol;
1065         } else {
1066                 ss->subclass = iface->bInterfaceSubClass;
1067                 ss->protocol = iface->bInterfaceProtocol;
1068         }
1069
1070         /* set the handler pointers based on the protocol */
1071         USB_STOR_PRINTF("Transport: ");
1072         switch (ss->protocol) {
1073         case US_PR_CB:
1074                 USB_STOR_PRINTF("Control/Bulk\n");
1075                 ss->transport = usb_stor_CB_transport;
1076                 ss->transport_reset = usb_stor_CB_reset;
1077                 break;
1078
1079         case US_PR_CBI:
1080                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1081                 ss->transport = usb_stor_CB_transport;
1082                 ss->transport_reset = usb_stor_CB_reset;
1083                 break;
1084         case US_PR_BULK:
1085                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1086                 ss->transport = usb_stor_BBB_transport;
1087                 ss->transport_reset = usb_stor_BBB_reset;
1088                 break;
1089         default:
1090                 printf("USB Storage Transport unknown / not yet implemented\n");
1091                 return 0;
1092                 break;
1093         }
1094
1095         /*
1096          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1097          * An optional interrupt is OK (necessary for CBI protocol).
1098          * We will ignore any others.
1099          */
1100         for (i = 0; i < iface->bNumEndpoints; i++) {
1101                 /* is it an BULK endpoint? */
1102                 if ((iface->ep_desc[i].bmAttributes &  USB_ENDPOINT_XFERTYPE_MASK)
1103                     == USB_ENDPOINT_XFER_BULK) {
1104                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1105                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1106                                         USB_ENDPOINT_NUMBER_MASK;
1107                         else
1108                                 ss->ep_out = iface->ep_desc[i].bEndpointAddress &
1109                                         USB_ENDPOINT_NUMBER_MASK;
1110                 }
1111
1112                 /* is it an interrupt endpoint? */
1113                 if ((iface->ep_desc[i].bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1114                     == USB_ENDPOINT_XFER_INT) {
1115                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1116                                 USB_ENDPOINT_NUMBER_MASK;
1117                         ss->irqinterval = iface->ep_desc[i].bInterval;
1118                 }
1119         }
1120         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1121                   ss->ep_in, ss->ep_out, ss->ep_int);
1122
1123         /* Do some basic sanity checks, and bail if we find a problem */
1124         if (usb_set_interface(dev, iface->bInterfaceNumber, 0) ||
1125             !ss->ep_in || !ss->ep_out ||
1126             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1127                 USB_STOR_PRINTF("Problems with device\n");
1128                 return 0;
1129         }
1130         /* set class specific stuff */
1131         /* We only handle certain protocols.  Currently, these are
1132          * the only ones.
1133          * The SFF8070 accepts the requests used in u-boot
1134          */
1135         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1136             ss->subclass != US_SC_8070) {
1137                 printf("Sorry, protocol %d not yet supported.\n",ss->subclass);
1138                 return 0;
1139         }
1140         if(ss->ep_int) { /* we had found an interrupt endpoint, prepare irq pipe */
1141                 /* set up the IRQ pipe and handler */
1142
1143                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1144                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1145                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1146                 dev->irq_handle=usb_stor_irq;
1147         }
1148         dev->privptr=(void *)ss;
1149         return 1;
1150 }
1151
1152 int usb_stor_get_info(struct usb_device *dev,struct us_data *ss,block_dev_desc_t *dev_desc)
1153 {
1154         unsigned char perq,modi;
1155         unsigned long cap[2];
1156         unsigned long *capacity,*blksz;
1157         ccb *pccb = &usb_ccb;
1158
1159         /* for some reasons a couple of devices would not survive this reset */
1160         if (
1161             /* Sony USM256E */
1162             (dev->descriptor.idVendor == 0x054c &&
1163              dev->descriptor.idProduct == 0x019e)
1164
1165             ||
1166             /* USB007 Mini-USB2 Flash Drive */
1167             (dev->descriptor.idVendor == 0x066f &&
1168              dev->descriptor.idProduct == 0x2010)
1169             ||
1170             /* SanDisk Corporation Cruzer Micro 20044318410546613953 */
1171             (dev->descriptor.idVendor == 0x0781 &&
1172              dev->descriptor.idProduct == 0x5151)
1173             )
1174                 USB_STOR_PRINTF("usb_stor_get_info: skipping RESET..\n");
1175         else
1176                 ss->transport_reset(ss);
1177
1178         pccb->pdata = usb_stor_buf;
1179
1180         dev_desc->target = dev->devnum;
1181         pccb->lun = dev_desc->lun;
1182         USB_STOR_PRINTF(" address %d\n",dev_desc->target);
1183
1184         if(usb_inquiry(pccb,ss))
1185                 return -1;
1186
1187         perq = usb_stor_buf[0];
1188         modi = usb_stor_buf[1];
1189         if((perq & 0x1f) == 0x1f) {
1190                 return 0; /* skip unknown devices */
1191         }
1192         if((modi&0x80) == 0x80) {/* drive is removable */
1193                 dev_desc->removable = 1;
1194         }
1195         memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
1196         memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
1197         memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
1198         dev_desc->vendor[8] = 0;
1199         dev_desc->product[16] = 0;
1200         dev_desc->revision[4] = 0;
1201 #ifdef CONFIG_USB_BIN_FIXUP
1202         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, (uchar *)dev_desc->product);
1203 #endif /* CONFIG_USB_BIN_FIXUP */
1204         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n",usb_stor_buf[2],usb_stor_buf[3]);
1205         if(usb_test_unit_ready(pccb,ss)) {
1206                 printf("Device NOT ready\n   Request Sense returned %02X %02X %02X\n",pccb->sense_buf[2],pccb->sense_buf[12],pccb->sense_buf[13]);
1207                 if(dev_desc->removable == 1) {
1208                         dev_desc->type = perq;
1209                         return 1;
1210                 }
1211                 else
1212                         return 0;
1213         }
1214         pccb->pdata = (unsigned char *)&cap[0];
1215         memset(pccb->pdata,0,8);
1216         if(usb_read_capacity(pccb,ss) != 0) {
1217                 printf("READ_CAP ERROR\n");
1218                 cap[0] = 2880;
1219                 cap[1] = 0x200;
1220         }
1221         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n",cap[0],cap[1]);
1222 #if 0
1223         if(cap[0]>(0x200000 * 10)) /* greater than 10 GByte */
1224                 cap[0]>>=16;
1225 #endif
1226         cap[0] = cpu_to_be32(cap[0]);
1227         cap[1] = cpu_to_be32(cap[1]);
1228
1229         /* this assumes bigendian! */
1230         cap[0] += 1;
1231         capacity = &cap[0];
1232         blksz = &cap[1];
1233         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",*capacity,*blksz);
1234         dev_desc->lba = *capacity;
1235         dev_desc->blksz = *blksz;
1236         dev_desc->type = perq;
1237         USB_STOR_PRINTF(" address %d\n",dev_desc->target);
1238         USB_STOR_PRINTF("partype: %d\n",dev_desc->part_type);
1239
1240         init_part(dev_desc);
1241
1242         USB_STOR_PRINTF("partype: %d\n",dev_desc->part_type);
1243         return 1;
1244 }
1245
1246 #endif /* CONFIG_USB_STORAGE */
1247 #endif