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/processor.h>
  56
  57
  58 #if defined(CONFIG_CMD_USB)
  59 #include <part.h>
  60 #include <usb.h>
  61
  62 #ifdef CONFIG_USB_STORAGE
  63
  64 #undef USB_STOR_DEBUG
  65 #undef BBB_COMDAT_TRACE
  66 #undef BBB_XPORT_TRACE
  67
  68 #ifdef  USB_STOR_DEBUG
  69 #define USB_STOR_PRINTF(fmt,args...)    printf (fmt ,##args)
  70 #else
  71 #define USB_STOR_PRINTF(fmt,args...)
  72 #endif
  73
  74 #include <scsi.h>
  75 /* direction table -- this indicates the direction of the data
  76  * transfer for each command code -- a 1 indicates input
  77  */
  78 unsigned char us_direction[256/8] = {
  79         0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
  80         0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
  81         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
  82         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
  83 };
  84 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
  85
  86 static unsigned char usb_stor_buf[512];
  87 static ccb usb_ccb;
  88
  89 /*
  90  * CBI style
  91  */
  92
  93 #define US_CBI_ADSC             0
  94
  95 /*
  96  * BULK only
  97  */
  98 #define US_BBB_RESET            0xff
  99 #define US_BBB_GET_MAX_LUN      0xfe
 100
 101 /* Command Block Wrapper */
 102 typedef struct {
 103         __u32           dCBWSignature;
 104 #       define CBWSIGNATURE     0x43425355
 105         __u32           dCBWTag;
 106         __u32           dCBWDataTransferLength;
 107         __u8            bCBWFlags;
 108 #       define CBWFLAGS_OUT     0x00
 109 #       define CBWFLAGS_IN      0x80
 110         __u8            bCBWLUN;
 111         __u8            bCDBLength;
 112 #       define CBWCDBLENGTH     16
 113         __u8            CBWCDB[CBWCDBLENGTH];
 114 } umass_bbb_cbw_t;
 115 #define UMASS_BBB_CBW_SIZE      31
 116 static __u32 CBWTag = 0;
 117
 118 /* Command Status Wrapper */
 119 typedef struct {
 120         __u32           dCSWSignature;
 121 #       define CSWSIGNATURE     0x53425355
 122         __u32           dCSWTag;
 123         __u32           dCSWDataResidue;
 124         __u8            bCSWStatus;
 125 #       define CSWSTATUS_GOOD   0x0
 126 #       define CSWSTATUS_FAILED 0x1
 127 #       define CSWSTATUS_PHASE  0x2
 128 } umass_bbb_csw_t;
 129 #define UMASS_BBB_CSW_SIZE      13
 130
 131 #define USB_MAX_STOR_DEV 5
 132 static int usb_max_devs = 0; /* number of highest available usb device */
 133
 134 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV];
 135
 136 struct us_data;
 137 typedef int (*trans_cmnd)(ccb*, struct us_data*);
 138 typedef int (*trans_reset)(struct us_data*);
 139
 140 struct us_data {
 141         struct usb_device       *pusb_dev;       /* this usb_device */
 142         unsigned int            flags;           /* from filter initially */
 143         unsigned char           ifnum;           /* interface number */
 144         unsigned char           ep_in;           /* in endpoint */
 145         unsigned char           ep_out;          /* out ....... */
 146         unsigned char           ep_int;          /* interrupt . */
 147         unsigned char           subclass;        /* as in overview */
 148         unsigned char           protocol;        /* .............. */
 149         unsigned char           attention_done;  /* force attn on first cmd */
 150         unsigned short  ip_data;         /* interrupt data */
 151         int                                                     action;          /* what to do */
 152         int                                                     ip_wanted; /* needed */
 153         int                                                     *irq_handle;     /* for USB int requests */
 154         unsigned int            irqpipe;         /* pipe for release_irq */
 155         unsigned char           irqmaxp;        /* max packed for irq Pipe */
 156         unsigned char   irqinterval; /* Intervall for IRQ Pipe */
 157         ccb                                                     *srb;            /* current srb */
 158         trans_reset                     transport_reset; /* reset routine */
 159         trans_cmnd                      transport; /* transport routine */
 160 };
 161
 162 static struct us_data usb_stor[USB_MAX_STOR_DEV];
 163
 164
 165 #define USB_STOR_TRANSPORT_GOOD    0
 166 #define USB_STOR_TRANSPORT_FAILED -1
 167 #define USB_STOR_TRANSPORT_ERROR  -2
 168
 169
 170 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, block_dev_desc_t *dev_desc);
 171 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,struct us_data *ss);
 172 unsigned long usb_stor_read(int device, unsigned long blknr, unsigned long blkcnt, void *buffer);
 173 struct usb_device * usb_get_dev_index(int index);
 174 void uhci_show_temp_int_td(void);
 175
 176 block_dev_desc_t *usb_stor_get_dev(int index)
 177 {
 178         return (index < USB_MAX_STOR_DEV) ? &usb_dev_desc[index] : NULL;
 179 }
 180
 181
 182 void usb_show_progress(void)
 183 {
 184         printf(".");
 185 }
 186
 187 /*********************************************************************************
 188  * show info on storage devices; 'usb start/init' must be invoked earlier
 189  * as we only retrieve structures populated during devices initialization
 190  */
 191 void usb_stor_info(void)
 192 {
 193         int i;
 194
 195         if (usb_max_devs > 0)
 196                 for (i = 0; i < usb_max_devs; i++) {
 197                         printf ("  Device %d: ", i);
 198                         dev_print(&usb_dev_desc[i]);
 199                 }
 200         else
 201                 printf("No storage devices, perhaps not 'usb start'ed..?\n");
 202 }
 203
 204 /*********************************************************************************
 205  * scan the usb and reports device info
 206  * to the user if mode = 1
 207  * returns current device or -1 if no
 208  */
 209 int usb_stor_scan(int mode)
 210 {
 211         unsigned char i;
 212         struct usb_device *dev;
 213
 214         /* GJ */
 215         memset(usb_stor_buf, 0, sizeof(usb_stor_buf));
 216
 217         if(mode==1) {
 218                 printf("       scanning bus for storage devices... ");
 219         }
 220         usb_disable_asynch(1); /* asynch transfer not allowed */
 221
 222         for(i=0;i<USB_MAX_STOR_DEV;i++) {
 223                 memset(&usb_dev_desc[i],0,sizeof(block_dev_desc_t));
 224                 usb_dev_desc[i].target=0xff;
 225                 usb_dev_desc[i].if_type=IF_TYPE_USB;
 226                 usb_dev_desc[i].dev=i;
 227                 usb_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
 228                 usb_dev_desc[i].block_read=usb_stor_read;
 229         }
 230
 231         usb_max_devs=0;
 232         for(i=0;i<USB_MAX_DEVICE;i++) {
 233                 dev=usb_get_dev_index(i); /* get device */
 234                 USB_STOR_PRINTF("i=%d\n",i);
 235                 if(dev==NULL) {
 236                         break; /* no more devices avaiable */
 237                 }
 238                 if(usb_storage_probe(dev,0,&usb_stor[usb_max_devs])) { /* ok, it is a storage devices */
 239                         /* get info and fill it in */
 240                         if(usb_stor_get_info(dev, &usb_stor[usb_max_devs], &usb_dev_desc[usb_max_devs]))
 241                                 usb_max_devs++;
 242                 } /* if storage device */
 243                 if(usb_max_devs==USB_MAX_STOR_DEV) {
 244                         printf("max USB Storage Device reached: %d stopping\n",usb_max_devs);
 245                         break;
 246                 }
 247         } /* for */
 248
 249         usb_disable_asynch(0); /* asynch transfer allowed */
 250         printf("%d Storage Device(s) found\n", usb_max_devs);
 251         if(usb_max_devs>0)
 252                 return 0;
 253         else
 254                 return-1;
 255 }
 256
 257 static int usb_stor_irq(struct usb_device *dev)
 258 {
 259         struct us_data *us;
 260         us=(struct us_data *)dev->privptr;
 261
 262         if(us->ip_wanted) {
 263                 us->ip_wanted=0;
 264         }
 265         return 0;
 266 }
 267
 268
 269 #ifdef  USB_STOR_DEBUG
 270
 271 static void usb_show_srb(ccb * pccb)
 272 {
 273         int i;
 274         printf("SRB: len %d datalen 0x%lX\n ",pccb->cmdlen,pccb->datalen);
 275         for(i=0;i<12;i++) {
 276                 printf("%02X ",pccb->cmd[i]);
 277         }
 278         printf("\n");
 279 }
 280
 281 static void display_int_status(unsigned long tmp)
 282 {
 283         printf("Status: %s %s %s %s %s %s %s\n",
 284                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 285                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 286                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 287                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 288                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 289                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 290                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 291 }
 292 #endif
 293 /***********************************************************************
 294  * Data transfer routines
 295  ***********************************************************************/
 296
 297 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 298 {
 299         int max_size;
 300         int this_xfer;
 301         int result;
 302         int partial;
 303         int maxtry;
 304         int stat;
 305
 306         /* determine the maximum packet size for these transfers */
 307         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 308
 309         /* while we have data left to transfer */
 310         while (length) {
 311
 312                 /* calculate how long this will be -- maximum or a remainder */
 313                 this_xfer = length > max_size ? max_size : length;
 314                 length -= this_xfer;
 315
 316                 /* setup the retry counter */
 317                 maxtry = 10;
 318
 319                 /* set up the transfer loop */
 320                 do {
 321                         /* transfer the data */
 322                         USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
 323                                   (unsigned int)buf, this_xfer, 11 - maxtry);
 324                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 325                                               this_xfer, &partial, USB_CNTL_TIMEOUT*5);
 326                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
 327                                   result, partial, this_xfer);
 328                         if(us->pusb_dev->status!=0) {
 329                                 /* if we stall, we need to clear it before we go on */
 330 #ifdef USB_STOR_DEBUG
 331                                 display_int_status(us->pusb_dev->status);
 332 #endif
 333                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 334                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
 335                                         stat = us->pusb_dev->status;
 336                                         usb_clear_halt(us->pusb_dev, pipe);
 337                                         us->pusb_dev->status=stat;
 338                                         if(this_xfer == partial) {
 339                                                 USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n",us->pusb_dev->status);
 340                                                 return 0;
 341                                         }
 342                                         else
 343                                                 return result;
 344                                 }
 345                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 346                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
 347                                         return result;
 348                                 }
 349                                 if(this_xfer == partial) {
 350                                         USB_STOR_PRINTF("bulk transferred with error %d, but data ok\n",us->pusb_dev->status);
 351                                         return 0;
 352                                 }
 353                                 /* if our try counter reaches 0, bail out */
 354                                 USB_STOR_PRINTF("bulk transferred with error %d, data %d\n",us->pusb_dev->status,partial);
 355                                 if (!maxtry--)
 356                                                 return result;
 357                         }
 358                         /* update to show what data was transferred */
 359                         this_xfer -= partial;
 360                         buf += partial;
 361                         /* continue until this transfer is done */
 362                 } while ( this_xfer );
 363         }
 364
 365         /* if we get here, we're done and successful */
 366         return 0;
 367 }
 368
 369 static int usb_stor_BBB_reset(struct us_data *us)
 370 {
 371         int result;
 372         unsigned int pipe;
 373
 374         /*
 375          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 376          *
 377          * For Reset Recovery the host shall issue in the following order:
 378          * a) a Bulk-Only Mass Storage Reset
 379          * b) a Clear Feature HALT to the Bulk-In endpoint
 380          * c) a Clear Feature HALT to the Bulk-Out endpoint
 381          *
 382          * This is done in 3 steps.
 383          *
 384          * If the reset doesn't succeed, the device should be port reset.
 385          *
 386          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 387          */
 388         USB_STOR_PRINTF("BBB_reset\n");
 389         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 390                                  US_BBB_RESET, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 391                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT*5);
 392
 393         if((result < 0) && (us->pusb_dev->status & USB_ST_STALLED))
 394         {
 395                 USB_STOR_PRINTF("RESET:stall\n");
 396                 return -1;
 397         }
 398
 399         /* long wait for reset */
 400         wait_ms(150);
 401         USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n",result,us->pusb_dev->status);
 402         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 403         result = usb_clear_halt(us->pusb_dev, pipe);
 404         /* long wait for reset */
 405         wait_ms(150);
 406         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n",result,us->pusb_dev->status);
 407         /* long wait for reset */
 408         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 409         result = usb_clear_halt(us->pusb_dev, pipe);
 410         wait_ms(150);
 411         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing OUT endpoint\n",result,us->pusb_dev->status);
 412         USB_STOR_PRINTF("BBB_reset done\n");
 413         return 0;
 414 }
 415
 416 /* FIXME: this reset function doesn't really reset the port, and it
 417  * should. Actually it should probably do what it's doing here, and
 418  * reset the port physically
 419  */
 420 static int usb_stor_CB_reset(struct us_data *us)
 421 {
 422         unsigned char cmd[12];
 423         int result;
 424
 425         USB_STOR_PRINTF("CB_reset\n");
 426         memset(cmd, 0xFF, sizeof(cmd));
 427         cmd[0] = SCSI_SEND_DIAG;
 428         cmd[1] = 4;
 429         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 430                                  US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 431                                  0, us->ifnum, cmd, sizeof(cmd), USB_CNTL_TIMEOUT*5);
 432
 433         /* long wait for reset */
 434         wait_ms(1500);
 435         USB_STOR_PRINTF("CB_reset result %d: status %X clearing endpoint halt\n",result,us->pusb_dev->status);
 436         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 437         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 438
 439         USB_STOR_PRINTF("CB_reset done\n");
 440         return 0;
 441 }
 442
 443 /*
 444  * Set up the command for a BBB device. Note that the actual SCSI
 445  * command is copied into cbw.CBWCDB.
 446  */
 447 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 448 {
 449         int result;
 450         int actlen;
 451         int dir_in;
 452         unsigned int pipe;
 453         umass_bbb_cbw_t cbw;
 454
 455         dir_in = US_DIRECTION(srb->cmd[0]);
 456
 457 #ifdef BBB_COMDAT_TRACE
 458         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);
 459         if (srb->cmdlen) {
 460                 for(result = 0;result < srb->cmdlen;result++)
 461                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 462                 printf("\n");
 463         }
 464 #endif
 465         /* sanity checks */
 466         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 467                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
 468                 return -1;
 469         }
 470
 471         /* always OUT to the ep */
 472         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 473
 474         cbw.dCBWSignature = swap_32(CBWSIGNATURE);
 475         cbw.dCBWTag = swap_32(CBWTag++);
 476         cbw.dCBWDataTransferLength = swap_32(srb->datalen);
 477         cbw.bCBWFlags = (dir_in? CBWFLAGS_IN : CBWFLAGS_OUT);
 478         cbw.bCBWLUN = srb->lun;
 479         cbw.bCDBLength = srb->cmdlen;
 480         /* copy the command data into the CBW command data buffer */
 481         /* DST SRC LEN!!! */
 482         memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen);
 483         result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE, &actlen, USB_CNTL_TIMEOUT*5);
 484         if (result < 0)
 485                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 486         return result;
 487 }
 488
 489 /* FIXME: we also need a CBI_command which sets up the completion
 490  * interrupt, and waits for it
 491  */
 492 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 493 {
 494         int result = 0;
 495         int dir_in,retry;
 496         unsigned int pipe;
 497         unsigned long status;
 498
 499         retry=5;
 500                 dir_in=US_DIRECTION(srb->cmd[0]);
 501
 502                 if(dir_in)
 503                         pipe=usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 504                 else
 505                         pipe=usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 506         while(retry--) {
 507                 USB_STOR_PRINTF("CBI gets a command: Try %d\n",5-retry);
 508 #ifdef USB_STOR_DEBUG
 509                 usb_show_srb(srb);
 510 #endif
 511                 /* let's send the command via the control pipe */
 512                 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 513                                          US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 514                                          0, us->ifnum,
 515                                          srb->cmd, srb->cmdlen, USB_CNTL_TIMEOUT*5);
 516                 USB_STOR_PRINTF("CB_transport: control msg returned %d, status %X\n",result,us->pusb_dev->status);
 517                 /* check the return code for the command */
 518                 if (result < 0) {
 519                         if(us->pusb_dev->status & USB_ST_STALLED) {
 520                                 status=us->pusb_dev->status;
 521                                 USB_STOR_PRINTF(" stall during command found, clear pipe\n");
 522                                 usb_clear_halt(us->pusb_dev,  usb_sndctrlpipe(us->pusb_dev,0));
 523                                 us->pusb_dev->status=status;
 524                         }
 525                         USB_STOR_PRINTF(" error during command %02X Stat = %X\n",srb->cmd[0],us->pusb_dev->status);
 526                         return result;
 527                 }
 528                 /* transfer the data payload for this command, if one exists*/
 529
 530                 USB_STOR_PRINTF("CB_transport: control msg returned %d, direction is %s to go 0x%lx\n",result,dir_in ? "IN" : "OUT",srb->datalen);
 531                 if (srb->datalen) {
 532                         result = us_one_transfer(us, pipe, (char *)srb->pdata,srb->datalen);
 533                         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);
 534                         if(!(us->pusb_dev->status & USB_ST_NAK_REC))
 535                                 break;
 536                 } /* if (srb->datalen) */
 537                 else
 538                         break;
 539         }
 540         /* return result */
 541
 542         return result;
 543 }
 544
 545
 546 int usb_stor_CBI_get_status (ccb * srb, struct us_data *us)
 547 {
 548         int timeout;
 549
 550         us->ip_wanted = 1;
 551         submit_int_msg (us->pusb_dev, us->irqpipe,
 552                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 553         timeout = 1000;
 554         while (timeout--) {
 555                 if ((volatile int *) us->ip_wanted == 0)
 556                         break;
 557                 wait_ms (10);
 558         }
 559         if (us->ip_wanted) {
 560                 printf ("       Did not get interrupt on CBI\n");
 561                 us->ip_wanted = 0;
 562                 return USB_STOR_TRANSPORT_ERROR;
 563         }
 564         USB_STOR_PRINTF
 565                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
 566                  us->ip_data, us->pusb_dev->irq_act_len,
 567                  us->pusb_dev->irq_status);
 568         /* UFI gives us ASC and ASCQ, like a request sense */
 569         if (us->subclass == US_SC_UFI) {
 570                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 571                     srb->cmd[0] == SCSI_INQUIRY)
 572                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 573                 else if (us->ip_data)
 574                         return USB_STOR_TRANSPORT_FAILED;
 575                 else
 576                         return USB_STOR_TRANSPORT_GOOD;
 577         }
 578         /* otherwise, we interpret the data normally */
 579         switch (us->ip_data) {
 580         case 0x0001:
 581                 return USB_STOR_TRANSPORT_GOOD;
 582         case 0x0002:
 583                 return USB_STOR_TRANSPORT_FAILED;
 584         default:
 585                 return USB_STOR_TRANSPORT_ERROR;
 586         }                       /* switch */
 587         return USB_STOR_TRANSPORT_ERROR;
 588 }
 589
 590 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 591 #define USB_TRANSPORT_NOT_READY_RETRY 10
 592
 593 /* clear a stall on an endpoint - special for BBB devices */
 594 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 595 {
 596         int result;
 597
 598         /* ENDPOINT_HALT = 0, so set value to 0 */
 599         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 600                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 601                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT*5);
 602         return result;
 603 }
 604
 605 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 606 {
 607         int result, retry;
 608         int dir_in;
 609         int actlen, data_actlen;
 610         unsigned int pipe, pipein, pipeout;
 611         umass_bbb_csw_t csw;
 612 #ifdef BBB_XPORT_TRACE
 613         unsigned char *ptr;
 614         int index;
 615 #endif
 616
 617         dir_in = US_DIRECTION(srb->cmd[0]);
 618
 619         /* COMMAND phase */
 620         USB_STOR_PRINTF("COMMAND phase\n");
 621         result = usb_stor_BBB_comdat(srb, us);
 622         if (result < 0) {
 623                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
 624                         us->pusb_dev->status);
 625                 usb_stor_BBB_reset(us);
 626                 return USB_STOR_TRANSPORT_FAILED;
 627         }
 628         wait_ms(5);
 629         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 630         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 631         /* DATA phase + error handling */
 632         data_actlen = 0;
 633         /* no data, go immediately to the STATUS phase */
 634         if (srb->datalen == 0)
 635                 goto st;
 636         USB_STOR_PRINTF("DATA phase\n");
 637         if (dir_in)
 638                 pipe = pipein;
 639         else
 640                 pipe = pipeout;
 641         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, &data_actlen, USB_CNTL_TIMEOUT*5);
 642         /* special handling of STALL in DATA phase */
 643         if((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 644                 USB_STOR_PRINTF("DATA:stall\n");
 645                 /* clear the STALL on the endpoint */
 646                 result = usb_stor_BBB_clear_endpt_stall(us, dir_in? us->ep_in : us->ep_out);
 647                 if (result >= 0)
 648                         /* continue on to STATUS phase */
 649                         goto st;
 650         }
 651         if (result < 0) {
 652                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 653                         us->pusb_dev->status);
 654                 usb_stor_BBB_reset(us);
 655                 return USB_STOR_TRANSPORT_FAILED;
 656         }
 657 #ifdef BBB_XPORT_TRACE
 658         for (index = 0; index < data_actlen; index++)
 659                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 660         printf("\n");
 661 #endif
 662         /* STATUS phase + error handling */
 663    st:
 664         retry = 0;
 665    again:
 666         USB_STOR_PRINTF("STATUS phase\n");
 667         result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE,
 668                                 &actlen, USB_CNTL_TIMEOUT*5);
 669
 670         /* special handling of STALL in STATUS phase */
 671         if((result < 0) && (retry < 1) && (us->pusb_dev->status & USB_ST_STALLED)) {
 672                 USB_STOR_PRINTF("STATUS:stall\n");
 673                 /* clear the STALL on the endpoint */
 674                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 675                 if (result >= 0 && (retry++ < 1))
 676                         /* do a retry */
 677                         goto again;
 678         }
 679         if (result < 0) {
 680                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 681                         us->pusb_dev->status);
 682                 usb_stor_BBB_reset(us);
 683                 return USB_STOR_TRANSPORT_FAILED;
 684         }
 685 #ifdef BBB_XPORT_TRACE
 686         ptr = (unsigned char *)&csw;
 687         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 688                 printf("ptr[%d] %#x ", index, ptr[index]);
 689         printf("\n");
 690 #endif
 691         /* misuse pipe to get the residue */
 692         pipe = swap_32(csw.dCSWDataResidue);
 693         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 694                 pipe = srb->datalen - data_actlen;
 695         if (CSWSIGNATURE != swap_32(csw.dCSWSignature)) {
 696                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
 697                 usb_stor_BBB_reset(us);
 698                 return USB_STOR_TRANSPORT_FAILED;
 699         } else if ((CBWTag - 1) != swap_32(csw.dCSWTag)) {
 700                 USB_STOR_PRINTF("!Tag\n");
 701                 usb_stor_BBB_reset(us);
 702                 return USB_STOR_TRANSPORT_FAILED;
 703         } else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
 704                 USB_STOR_PRINTF(">PHASE\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 (data_actlen > srb->datalen) {
 712                 USB_STOR_PRINTF("transferred %dB instead of %dB\n",
 713                         data_actlen, srb->datalen);
 714                 return USB_STOR_TRANSPORT_FAILED;
 715         } else if (csw.bCSWStatus == CSWSTATUS_FAILED) {
 716                 USB_STOR_PRINTF("FAILED\n");
 717                 return USB_STOR_TRANSPORT_FAILED;
 718         }
 719
 720         return result;
 721 }
 722
 723 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 724 {
 725         int result,status;
 726         ccb *psrb;
 727         ccb reqsrb;
 728         int retry,notready;
 729
 730         psrb=&reqsrb;
 731         status=USB_STOR_TRANSPORT_GOOD;
 732         retry=0;
 733         notready=0;
 734         /* issue the command */
 735 do_retry:
 736         result=usb_stor_CB_comdat(srb,us);
 737         USB_STOR_PRINTF("command / Data returned %d, status %X\n",result,us->pusb_dev->status);
 738         /* if this is an CBI Protocol, get IRQ */
 739         if(us->protocol==US_PR_CBI) {
 740                 status=usb_stor_CBI_get_status(srb,us);
 741                 /* if the status is error, report it */
 742                 if(status==USB_STOR_TRANSPORT_ERROR) {
 743                         USB_STOR_PRINTF(" USB CBI Command Error\n");
 744                         return status;
 745                 }
 746                 srb->sense_buf[12]=(unsigned char)(us->ip_data>>8);
 747                 srb->sense_buf[13]=(unsigned char)(us->ip_data&0xff);
 748                 if(!us->ip_data) {
 749                 /* if the status is good, report it */
 750                         if(status==USB_STOR_TRANSPORT_GOOD) {
 751                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
 752                                 return status;
 753                         }
 754                 }
 755         }
 756         /* do we have to issue an auto request? */
 757         /* HERE we have to check the result */
 758         if((result<0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 759                 USB_STOR_PRINTF("ERROR %X\n",us->pusb_dev->status);
 760                 us->transport_reset(us);
 761                 return USB_STOR_TRANSPORT_ERROR;
 762         }
 763         if((us->protocol==US_PR_CBI) &&
 764                         ((srb->cmd[0]==SCSI_REQ_SENSE) ||
 765                         (srb->cmd[0]==SCSI_INQUIRY))) { /* do not issue an autorequest after request sense */
 766                 USB_STOR_PRINTF("No auto request and good\n");
 767                 return USB_STOR_TRANSPORT_GOOD;
 768         }
 769         /* issue an request_sense */
 770         memset(&psrb->cmd[0],0,12);
 771         psrb->cmd[0]=SCSI_REQ_SENSE;
 772         psrb->cmd[1]=srb->lun<<5;
 773         psrb->cmd[4]=18;
 774         psrb->datalen=18;
 775         psrb->pdata=&srb->sense_buf[0];
 776         psrb->cmdlen=12;
 777         /* issue the command */
 778         result=usb_stor_CB_comdat(psrb,us);
 779         USB_STOR_PRINTF("auto request returned %d\n",result);
 780         /* if this is an CBI Protocol, get IRQ */
 781         if(us->protocol==US_PR_CBI) {
 782                 status=usb_stor_CBI_get_status(psrb,us);
 783         }
 784         if((result<0)&&!(us->pusb_dev->status & USB_ST_STALLED)) {
 785                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n",us->pusb_dev->status);
 786                 return USB_STOR_TRANSPORT_ERROR;
 787         }
 788         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]);
 789         /* Check the auto request result */
 790         if((srb->sense_buf[2]==0) &&
 791                  (srb->sense_buf[12]==0) &&
 792                  (srb->sense_buf[13]==0)) /* ok, no sense */
 793                 return USB_STOR_TRANSPORT_GOOD;
 794         /* Check the auto request result */
 795         switch(srb->sense_buf[2]) {
 796         case 0x01: /* Recovered Error */
 797                 return USB_STOR_TRANSPORT_GOOD;
 798                 break;
 799         case 0x02: /* Not Ready */
 800                 if(notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 801                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X 0x%02X (NOT READY)\n",
 802                                 srb->cmd[0],srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 803                         return USB_STOR_TRANSPORT_FAILED;
 804                 } else {
 805                         wait_ms(100);
 806                         goto do_retry;
 807                 }
 808                 break;
 809         default:
 810                 if(retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 811                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 812                                 srb->cmd[0],srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 813                         return USB_STOR_TRANSPORT_FAILED;
 814                 } else {
 815                         goto do_retry;
 816                 }
 817                 break;
 818         }
 819         return USB_STOR_TRANSPORT_FAILED;
 820 }
 821
 822
 823 static int usb_inquiry(ccb *srb,struct us_data *ss)
 824 {
 825         int retry,i;
 826         retry=5;
 827         do {
 828                 memset(&srb->cmd[0],0,12);
 829                 srb->cmd[0]=SCSI_INQUIRY;
 830                 srb->cmd[1]=srb->lun<<5;
 831                 srb->cmd[4]=36;
 832                 srb->datalen=36;
 833                 srb->cmdlen=12;
 834                 i=ss->transport(srb,ss);
 835                 USB_STOR_PRINTF("inquiry returns %d\n",i);
 836                 if(i==0)
 837                         break;
 838         } while(retry--);
 839
 840         if(!retry) {
 841                 printf("error in inquiry\n");
 842                 return -1;
 843         }
 844         return 0;
 845 }
 846
 847 static int usb_request_sense(ccb *srb,struct us_data *ss)
 848 {
 849         char *ptr;
 850
 851         ptr=(char *)srb->pdata;
 852         memset(&srb->cmd[0],0,12);
 853         srb->cmd[0]=SCSI_REQ_SENSE;
 854         srb->cmd[1]=srb->lun<<5;
 855         srb->cmd[4]=18;
 856         srb->datalen=18;
 857         srb->pdata=&srb->sense_buf[0];
 858         srb->cmdlen=12;
 859         ss->transport(srb,ss);
 860         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 861         srb->pdata=(uchar *)ptr;
 862         return 0;
 863 }
 864
 865 static int usb_test_unit_ready(ccb *srb,struct us_data *ss)
 866 {
 867         int retries = 10;
 868
 869         do {
 870                 memset(&srb->cmd[0],0,12);
 871                 srb->cmd[0]=SCSI_TST_U_RDY;
 872                 srb->cmd[1]=srb->lun<<5;
 873                 srb->datalen=0;
 874                 srb->cmdlen=12;
 875                 if(ss->transport(srb,ss)==USB_STOR_TRANSPORT_GOOD) {
 876                         return 0;
 877                 }
 878                 usb_request_sense (srb, ss);
 879                 wait_ms (100);
 880         } while(retries--);
 881
 882         return -1;
 883 }
 884
 885 static int usb_read_capacity(ccb *srb,struct us_data *ss)
 886 {
 887         int retry;
 888         retry = 3; /* retries */
 889         do {
 890                 memset(&srb->cmd[0],0,12);
 891                 srb->cmd[0]=SCSI_RD_CAPAC;
 892                 srb->cmd[1]=srb->lun<<5;
 893                 srb->datalen=8;
 894                 srb->cmdlen=12;
 895                 if(ss->transport(srb,ss)==USB_STOR_TRANSPORT_GOOD) {
 896                         return 0;
 897                 }
 898         } while(retry--);
 899
 900         return -1;
 901 }
 902
 903 static int usb_read_10(ccb *srb,struct us_data *ss, unsigned long start, unsigned short blocks)
 904 {
 905         memset(&srb->cmd[0],0,12);
 906         srb->cmd[0]=SCSI_READ10;
 907         srb->cmd[1]=srb->lun<<5;
 908         srb->cmd[2]=((unsigned char) (start>>24))&0xff;
 909         srb->cmd[3]=((unsigned char) (start>>16))&0xff;
 910         srb->cmd[4]=((unsigned char) (start>>8))&0xff;
 911         srb->cmd[5]=((unsigned char) (start))&0xff;
 912         srb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 913         srb->cmd[8]=(unsigned char) blocks & 0xff;
 914         srb->cmdlen=12;
 915         USB_STOR_PRINTF("read10: start %lx blocks %x\n",start,blocks);
 916         return ss->transport(srb,ss);
 917 }
 918
 919
 920 #ifdef CONFIG_USB_BIN_FIXUP
 921 /*
 922  * Some USB storage devices queried for SCSI identification data respond with
 923  * binary strings, which if output to the console freeze the terminal. The
 924  * workaround is to modify the vendor and product strings read from such
 925  * device with proper values (as reported by 'usb info').
 926  *
 927  * Vendor and product length limits are taken from the definition of
 928  * block_dev_desc_t in include/part.h.
 929  */
 930 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
 931                                 unsigned char vendor[],
 932                                 unsigned char product[]) {
 933         const unsigned char max_vendor_len = 40;
 934         const unsigned char max_product_len = 20;
 935         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
 936                 strncpy ((char *)vendor, "SMSC", max_vendor_len);
 937                 strncpy ((char *)product, "Flash Media Cntrller", max_product_len);
 938         }
 939 }
 940 #endif /* CONFIG_USB_BIN_FIXUP */
 941
 942 #define USB_MAX_READ_BLK 20
 943
 944 unsigned long usb_stor_read(int device, unsigned long blknr, unsigned long blkcnt, void *buffer)
 945 {
 946         unsigned long start,blks, buf_addr;
 947         unsigned short smallblks;
 948         struct usb_device *dev;
 949         int retry,i;
 950         ccb *srb = &usb_ccb;
 951
 952         if (blkcnt == 0)
 953                 return 0;
 954
 955         device &= 0xff;
 956         /* Setup  device
 957          */
 958         USB_STOR_PRINTF("\nusb_read: dev %d \n",device);
 959         dev=NULL;
 960         for(i=0;i<USB_MAX_DEVICE;i++) {
 961                 dev=usb_get_dev_index(i);
 962                 if(dev==NULL) {
 963                         return 0;
 964                 }
 965                 if(dev->devnum==usb_dev_desc[device].target)
 966                         break;
 967         }
 968
 969         usb_disable_asynch(1); /* asynch transfer not allowed */
 970         srb->lun=usb_dev_desc[device].lun;
 971         buf_addr=(unsigned long)buffer;
 972         start=blknr;
 973         blks=blkcnt;
 974         if(usb_test_unit_ready(srb,(struct us_data *)dev->privptr)) {
 975                 printf("Device NOT ready\n   Request Sense returned %02X %02X %02X\n",
 976                         srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 977                 return 0;
 978         }
 979         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks, buf_addr);
 980         do {
 981                 retry=2;
 982                 srb->pdata=(unsigned char *)buf_addr;
 983                 if(blks>USB_MAX_READ_BLK) {
 984                         smallblks=USB_MAX_READ_BLK;
 985                 } else {
 986                         smallblks=(unsigned short) blks;
 987                 }
 988 retry_it:
 989                 if(smallblks==USB_MAX_READ_BLK)
 990                         usb_show_progress();
 991                 srb->datalen=usb_dev_desc[device].blksz * smallblks;
 992                 srb->pdata=(unsigned char *)buf_addr;
 993                 if(usb_read_10(srb,(struct us_data *)dev->privptr, start, smallblks)) {
 994                         USB_STOR_PRINTF("Read ERROR\n");
 995                         usb_request_sense(srb,(struct us_data *)dev->privptr);
 996                         if(retry--)
 997                                 goto retry_it;
 998                         blkcnt-=blks;
 999                         break;
1000                 }
1001                 start+=smallblks;
1002                 blks-=smallblks;
1003                 buf_addr+=srb->datalen;
1004         } while(blks!=0);
1005         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
1006         usb_disable_asynch(0); /* asynch transfer allowed */
1007         if(blkcnt>=USB_MAX_READ_BLK)
1008                 printf("\n");
1009         return(blkcnt);
1010 }
1011
1012
1013 /* Probe to see if a new device is actually a Storage device */
1014 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,struct us_data *ss)
1015 {
1016         struct usb_interface_descriptor *iface;
1017         int i;
1018         unsigned int flags = 0;
1019
1020         int protocol = 0;
1021         int subclass = 0;
1022
1023         /* let's examine the device now */
1024         iface = &dev->config.if_desc[ifnum];
1025
1026 #if 0
1027         /* this is the place to patch some storage devices */
1028         USB_STOR_PRINTF("iVendor %X iProduct %X\n",dev->descriptor.idVendor,dev->descriptor.idProduct);
1029         if ((dev->descriptor.idVendor) == 0x066b && (dev->descriptor.idProduct) == 0x0103) {
1030                 USB_STOR_PRINTF("patched for E-USB\n");
1031                 protocol = US_PR_CB;
1032                 subclass = US_SC_UFI;       /* an assumption */
1033         }
1034 #endif
1035
1036         if (dev->descriptor.bDeviceClass != 0 ||
1037                         iface->bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1038                         iface->bInterfaceSubClass < US_SC_MIN ||
1039                         iface->bInterfaceSubClass > US_SC_MAX) {
1040                 /* if it's not a mass storage, we go no further */
1041                 return 0;
1042         }
1043
1044         memset(ss, 0, sizeof(struct us_data));
1045
1046         /* At this point, we know we've got a live one */
1047         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1048
1049         /* Initialize the us_data structure with some useful info */
1050         ss->flags = flags;
1051         ss->ifnum = ifnum;
1052         ss->pusb_dev = dev;
1053         ss->attention_done = 0;
1054
1055         /* If the device has subclass and protocol, then use that.  Otherwise,
1056          * take data from the specific interface.
1057          */
1058         if (subclass) {
1059                 ss->subclass = subclass;
1060                 ss->protocol = protocol;
1061         } else {
1062                 ss->subclass = iface->bInterfaceSubClass;
1063                 ss->protocol = iface->bInterfaceProtocol;
1064         }
1065
1066         /* set the handler pointers based on the protocol */
1067         USB_STOR_PRINTF("Transport: ");
1068         switch (ss->protocol) {
1069         case US_PR_CB:
1070                 USB_STOR_PRINTF("Control/Bulk\n");
1071                 ss->transport = usb_stor_CB_transport;
1072                 ss->transport_reset = usb_stor_CB_reset;
1073                 break;
1074
1075         case US_PR_CBI:
1076                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1077                 ss->transport = usb_stor_CB_transport;
1078                 ss->transport_reset = usb_stor_CB_reset;
1079                 break;
1080         case US_PR_BULK:
1081                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1082                 ss->transport = usb_stor_BBB_transport;
1083                 ss->transport_reset = usb_stor_BBB_reset;
1084                 break;
1085         default:
1086                 printf("USB Storage Transport unknown / not yet implemented\n");
1087                 return 0;
1088                 break;
1089         }
1090
1091         /*
1092          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1093          * An optional interrupt is OK (necessary for CBI protocol).
1094          * We will ignore any others.
1095          */
1096         for (i = 0; i < iface->bNumEndpoints; i++) {
1097                 /* is it an BULK endpoint? */
1098                 if ((iface->ep_desc[i].bmAttributes &  USB_ENDPOINT_XFERTYPE_MASK)
1099                     == USB_ENDPOINT_XFER_BULK) {
1100                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1101                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1102                                         USB_ENDPOINT_NUMBER_MASK;
1103                         else
1104                                 ss->ep_out = iface->ep_desc[i].bEndpointAddress &
1105                                         USB_ENDPOINT_NUMBER_MASK;
1106                 }
1107
1108                 /* is it an interrupt endpoint? */
1109                 if ((iface->ep_desc[i].bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1110                     == USB_ENDPOINT_XFER_INT) {
1111                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1112                                 USB_ENDPOINT_NUMBER_MASK;
1113                         ss->irqinterval = iface->ep_desc[i].bInterval;
1114                 }
1115         }
1116         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1117                   ss->ep_in, ss->ep_out, ss->ep_int);
1118
1119         /* Do some basic sanity checks, and bail if we find a problem */
1120         if (usb_set_interface(dev, iface->bInterfaceNumber, 0) ||
1121             !ss->ep_in || !ss->ep_out ||
1122             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1123                 USB_STOR_PRINTF("Problems with device\n");
1124                 return 0;
1125         }
1126         /* set class specific stuff */
1127         /* We only handle certain protocols.  Currently, these are
1128          * the only ones.
1129          * The SFF8070 accepts the requests used in u-boot
1130          */
1131         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1132             ss->subclass != US_SC_8070) {
1133                 printf("Sorry, protocol %d not yet supported.\n",ss->subclass);
1134                 return 0;
1135         }
1136         if(ss->ep_int) { /* we had found an interrupt endpoint, prepare irq pipe */
1137                 /* set up the IRQ pipe and handler */
1138
1139                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1140                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1141                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1142                 dev->irq_handle=usb_stor_irq;
1143         }
1144         dev->privptr=(void *)ss;
1145         return 1;
1146 }
1147
1148 int usb_stor_get_info(struct usb_device *dev,struct us_data *ss,block_dev_desc_t *dev_desc)
1149 {
1150         unsigned char perq,modi;
1151         unsigned long cap[2];
1152         unsigned long *capacity,*blksz;
1153         ccb *pccb = &usb_ccb;
1154
1155         /* for some reasons a couple of devices would not survive this reset */
1156         if (
1157             /* Sony USM256E */
1158             (dev->descriptor.idVendor == 0x054c &&
1159              dev->descriptor.idProduct == 0x019e)
1160
1161             ||
1162             /* USB007 Mini-USB2 Flash Drive */
1163             (dev->descriptor.idVendor == 0x066f &&
1164              dev->descriptor.idProduct == 0x2010)
1165             ||
1166             /* SanDisk Corporation Cruzer Micro 20044318410546613953 */
1167             (dev->descriptor.idVendor == 0x0781 &&
1168              dev->descriptor.idProduct == 0x5151)
1169             )
1170                 USB_STOR_PRINTF("usb_stor_get_info: skipping RESET..\n");
1171         else
1172                 ss->transport_reset(ss);
1173
1174         pccb->pdata = usb_stor_buf;
1175
1176         dev_desc->target = dev->devnum;
1177         pccb->lun = dev_desc->lun;
1178         USB_STOR_PRINTF(" address %d\n",dev_desc->target);
1179
1180         if(usb_inquiry(pccb,ss))
1181                 return -1;
1182
1183         perq = usb_stor_buf[0];
1184         modi = usb_stor_buf[1];
1185         if((perq & 0x1f) == 0x1f) {
1186                 return 0; /* skip unknown devices */
1187         }
1188         if((modi&0x80) == 0x80) {/* drive is removable */
1189                 dev_desc->removable = 1;
1190         }
1191         memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
1192         memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
1193         memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
1194         dev_desc->vendor[8] = 0;
1195         dev_desc->product[16] = 0;
1196         dev_desc->revision[4] = 0;
1197 #ifdef CONFIG_USB_BIN_FIXUP
1198         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, (uchar *)dev_desc->product);
1199 #endif /* CONFIG_USB_BIN_FIXUP */
1200         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n",usb_stor_buf[2],usb_stor_buf[3]);
1201         if(usb_test_unit_ready(pccb,ss)) {
1202                 printf("Device NOT ready\n   Request Sense returned %02X %02X %02X\n",pccb->sense_buf[2],pccb->sense_buf[12],pccb->sense_buf[13]);
1203                 if(dev_desc->removable == 1) {
1204                         dev_desc->type = perq;
1205                         return 1;
1206                 }
1207                 else
1208                         return 0;
1209         }
1210         pccb->pdata = (unsigned char *)&cap[0];
1211         memset(pccb->pdata,0,8);
1212         if(usb_read_capacity(pccb,ss) != 0) {
1213                 printf("READ_CAP ERROR\n");
1214                 cap[0] = 2880;
1215                 cap[1] = 0x200;
1216         }
1217         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n",cap[0],cap[1]);
1218 #if 0
1219         if(cap[0]>(0x200000 * 10)) /* greater than 10 GByte */
1220                 cap[0]>>=16;
1221 #endif
1222 #ifdef LITTLEENDIAN
1223         cap[0] = ((unsigned long)(
1224                 (((unsigned long)(cap[0]) & (unsigned long)0x000000ffUL) << 24) |
1225                 (((unsigned long)(cap[0]) & (unsigned long)0x0000ff00UL) <<  8) |
1226                 (((unsigned long)(cap[0]) & (unsigned long)0x00ff0000UL) >>  8) |
1227                 (((unsigned long)(cap[0]) & (unsigned long)0xff000000UL) >> 24) ));
1228         cap[1] = ((unsigned long)(
1229                 (((unsigned long)(cap[1]) & (unsigned long)0x000000ffUL) << 24) |
1230                 (((unsigned long)(cap[1]) & (unsigned long)0x0000ff00UL) <<  8) |
1231                 (((unsigned long)(cap[1]) & (unsigned long)0x00ff0000UL) >>  8) |
1232                 (((unsigned long)(cap[1]) & (unsigned long)0xff000000UL) >> 24) ));
1233 #endif
1234         /* this assumes bigendian! */
1235         cap[0] += 1;
1236         capacity = &cap[0];
1237         blksz = &cap[1];
1238         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",*capacity,*blksz);
1239         dev_desc->lba = *capacity;
1240         dev_desc->blksz = *blksz;
1241         dev_desc->type = perq;
1242         USB_STOR_PRINTF(" address %d\n",dev_desc->target);
1243         USB_STOR_PRINTF("partype: %d\n",dev_desc->part_type);
1244
1245         init_part(dev_desc);
1246
1247         USB_STOR_PRINTF("partype: %d\n",dev_desc->part_type);
1248         return 1;
1249 }
1250
1251 #endif /* CONFIG_USB_STORAGE */
1252 #endif