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 int usb_stor_info(void)
 192 {
 193         int i;
 194
 195         if (usb_max_devs > 0) {
 196                 for (i = 0; i < usb_max_devs; i++) {
 197                         printf ("  Device %d: ", i);
 198                         dev_print(&usb_dev_desc[i]);
 199                 }
 200                 return 0;
 201         }
 202
 203         printf("No storage devices, perhaps not 'usb start'ed..?\n");
 204         return 1;
 205 }
 206
 207 /*********************************************************************************
 208  * scan the usb and reports device info
 209  * to the user if mode = 1
 210  * returns current device or -1 if no
 211  */
 212 int usb_stor_scan(int mode)
 213 {
 214         unsigned char i;
 215         struct usb_device *dev;
 216
 217         /* GJ */
 218         memset(usb_stor_buf, 0, sizeof(usb_stor_buf));
 219
 220         if(mode==1) {
 221                 printf("       scanning bus for storage devices... ");
 222         }
 223         usb_disable_asynch(1); /* asynch transfer not allowed */
 224
 225         for(i=0;i<USB_MAX_STOR_DEV;i++) {
 226                 memset(&usb_dev_desc[i],0,sizeof(block_dev_desc_t));
 227                 usb_dev_desc[i].target=0xff;
 228                 usb_dev_desc[i].if_type=IF_TYPE_USB;
 229                 usb_dev_desc[i].dev=i;
 230                 usb_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
 231                 usb_dev_desc[i].block_read=usb_stor_read;
 232         }
 233
 234         usb_max_devs=0;
 235         for(i=0;i<USB_MAX_DEVICE;i++) {
 236                 dev=usb_get_dev_index(i); /* get device */
 237                 USB_STOR_PRINTF("i=%d\n",i);
 238                 if(dev==NULL) {
 239                         break; /* no more devices avaiable */
 240                 }
 241                 if(usb_storage_probe(dev,0,&usb_stor[usb_max_devs])) { /* ok, it is a storage devices */
 242                         /* get info and fill it in */
 243                         if(usb_stor_get_info(dev, &usb_stor[usb_max_devs], &usb_dev_desc[usb_max_devs]))
 244                                 usb_max_devs++;
 245                 } /* if storage device */
 246                 if(usb_max_devs==USB_MAX_STOR_DEV) {
 247                         printf("max USB Storage Device reached: %d stopping\n",usb_max_devs);
 248                         break;
 249                 }
 250         } /* for */
 251
 252         usb_disable_asynch(0); /* asynch transfer allowed */
 253         printf("%d Storage Device(s) found\n", usb_max_devs);
 254         if(usb_max_devs>0)
 255                 return 0;
 256         else
 257                 return-1;
 258 }
 259
 260 static int usb_stor_irq(struct usb_device *dev)
 261 {
 262         struct us_data *us;
 263         us=(struct us_data *)dev->privptr;
 264
 265         if(us->ip_wanted) {
 266                 us->ip_wanted=0;
 267         }
 268         return 0;
 269 }
 270
 271
 272 #ifdef  USB_STOR_DEBUG
 273
 274 static void usb_show_srb(ccb * pccb)
 275 {
 276         int i;
 277         printf("SRB: len %d datalen 0x%lX\n ",pccb->cmdlen,pccb->datalen);
 278         for(i=0;i<12;i++) {
 279                 printf("%02X ",pccb->cmd[i]);
 280         }
 281         printf("\n");
 282 }
 283
 284 static void display_int_status(unsigned long tmp)
 285 {
 286         printf("Status: %s %s %s %s %s %s %s\n",
 287                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 288                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 289                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 290                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 291                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 292                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 293                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 294 }
 295 #endif
 296 /***********************************************************************
 297  * Data transfer routines
 298  ***********************************************************************/
 299
 300 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 301 {
 302         int max_size;
 303         int this_xfer;
 304         int result;
 305         int partial;
 306         int maxtry;
 307         int stat;
 308
 309         /* determine the maximum packet size for these transfers */
 310         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 311
 312         /* while we have data left to transfer */
 313         while (length) {
 314
 315                 /* calculate how long this will be -- maximum or a remainder */
 316                 this_xfer = length > max_size ? max_size : length;
 317                 length -= this_xfer;
 318
 319                 /* setup the retry counter */
 320                 maxtry = 10;
 321
 322                 /* set up the transfer loop */
 323                 do {
 324                         /* transfer the data */
 325                         USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
 326                                   (unsigned int)buf, this_xfer, 11 - maxtry);
 327                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 328                                               this_xfer, &partial, USB_CNTL_TIMEOUT*5);
 329                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
 330                                   result, partial, this_xfer);
 331                         if(us->pusb_dev->status!=0) {
 332                                 /* if we stall, we need to clear it before we go on */
 333 #ifdef USB_STOR_DEBUG
 334                                 display_int_status(us->pusb_dev->status);
 335 #endif
 336                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 337                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
 338                                         stat = us->pusb_dev->status;
 339                                         usb_clear_halt(us->pusb_dev, pipe);
 340                                         us->pusb_dev->status=stat;
 341                                         if(this_xfer == partial) {
 342                                                 USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n",us->pusb_dev->status);
 343                                                 return 0;
 344                                         }
 345                                         else
 346                                                 return result;
 347                                 }
 348                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 349                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
 350                                         return result;
 351                                 }
 352                                 if(this_xfer == partial) {
 353                                         USB_STOR_PRINTF("bulk transferred with error %d, but data ok\n",us->pusb_dev->status);
 354                                         return 0;
 355                                 }
 356                                 /* if our try counter reaches 0, bail out */
 357                                 USB_STOR_PRINTF("bulk transferred with error %d, data %d\n",us->pusb_dev->status,partial);
 358                                 if (!maxtry--)
 359                                                 return result;
 360                         }
 361                         /* update to show what data was transferred */
 362                         this_xfer -= partial;
 363                         buf += partial;
 364                         /* continue until this transfer is done */
 365                 } while ( this_xfer );
 366         }
 367
 368         /* if we get here, we're done and successful */
 369         return 0;
 370 }
 371
 372 static int usb_stor_BBB_reset(struct us_data *us)
 373 {
 374         int result;
 375         unsigned int pipe;
 376
 377         /*
 378          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 379          *
 380          * For Reset Recovery the host shall issue in the following order:
 381          * a) a Bulk-Only Mass Storage Reset
 382          * b) a Clear Feature HALT to the Bulk-In endpoint
 383          * c) a Clear Feature HALT to the Bulk-Out endpoint
 384          *
 385          * This is done in 3 steps.
 386          *
 387          * If the reset doesn't succeed, the device should be port reset.
 388          *
 389          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 390          */
 391         USB_STOR_PRINTF("BBB_reset\n");
 392         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 393                                  US_BBB_RESET, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 394                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT*5);
 395
 396         if((result < 0) && (us->pusb_dev->status & USB_ST_STALLED))
 397         {
 398                 USB_STOR_PRINTF("RESET:stall\n");
 399                 return -1;
 400         }
 401
 402         /* long wait for reset */
 403         wait_ms(150);
 404         USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n",result,us->pusb_dev->status);
 405         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 406         result = usb_clear_halt(us->pusb_dev, pipe);
 407         /* long wait for reset */
 408         wait_ms(150);
 409         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n",result,us->pusb_dev->status);
 410         /* long wait for reset */
 411         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 412         result = usb_clear_halt(us->pusb_dev, pipe);
 413         wait_ms(150);
 414         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing OUT endpoint\n",result,us->pusb_dev->status);
 415         USB_STOR_PRINTF("BBB_reset done\n");
 416         return 0;
 417 }
 418
 419 /* FIXME: this reset function doesn't really reset the port, and it
 420  * should. Actually it should probably do what it's doing here, and
 421  * reset the port physically
 422  */
 423 static int usb_stor_CB_reset(struct us_data *us)
 424 {
 425         unsigned char cmd[12];
 426         int result;
 427
 428         USB_STOR_PRINTF("CB_reset\n");
 429         memset(cmd, 0xFF, sizeof(cmd));
 430         cmd[0] = SCSI_SEND_DIAG;
 431         cmd[1] = 4;
 432         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 433                                  US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 434                                  0, us->ifnum, cmd, sizeof(cmd), USB_CNTL_TIMEOUT*5);
 435
 436         /* long wait for reset */
 437         wait_ms(1500);
 438         USB_STOR_PRINTF("CB_reset result %d: status %X clearing endpoint halt\n",result,us->pusb_dev->status);
 439         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 440         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 441
 442         USB_STOR_PRINTF("CB_reset done\n");
 443         return 0;
 444 }
 445
 446 /*
 447  * Set up the command for a BBB device. Note that the actual SCSI
 448  * command is copied into cbw.CBWCDB.
 449  */
 450 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 451 {
 452         int result;
 453         int actlen;
 454         int dir_in;
 455         unsigned int pipe;
 456         umass_bbb_cbw_t cbw;
 457
 458         dir_in = US_DIRECTION(srb->cmd[0]);
 459
 460 #ifdef BBB_COMDAT_TRACE
 461         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);
 462         if (srb->cmdlen) {
 463                 for(result = 0;result < srb->cmdlen;result++)
 464                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 465                 printf("\n");
 466         }
 467 #endif
 468         /* sanity checks */
 469         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 470                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
 471                 return -1;
 472         }
 473
 474         /* always OUT to the ep */
 475         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 476
 477         cbw.dCBWSignature = swap_32(CBWSIGNATURE);
 478         cbw.dCBWTag = swap_32(CBWTag++);
 479         cbw.dCBWDataTransferLength = swap_32(srb->datalen);
 480         cbw.bCBWFlags = (dir_in? CBWFLAGS_IN : CBWFLAGS_OUT);
 481         cbw.bCBWLUN = srb->lun;
 482         cbw.bCDBLength = srb->cmdlen;
 483         /* copy the command data into the CBW command data buffer */
 484         /* DST SRC LEN!!! */
 485         memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen);
 486         result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE, &actlen, USB_CNTL_TIMEOUT*5);
 487         if (result < 0)
 488                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 489         return result;
 490 }
 491
 492 /* FIXME: we also need a CBI_command which sets up the completion
 493  * interrupt, and waits for it
 494  */
 495 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 496 {
 497         int result = 0;
 498         int dir_in,retry;
 499         unsigned int pipe;
 500         unsigned long status;
 501
 502         retry=5;
 503                 dir_in=US_DIRECTION(srb->cmd[0]);
 504
 505                 if(dir_in)
 506                         pipe=usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 507                 else
 508                         pipe=usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 509         while(retry--) {
 510                 USB_STOR_PRINTF("CBI gets a command: Try %d\n",5-retry);
 511 #ifdef USB_STOR_DEBUG
 512                 usb_show_srb(srb);
 513 #endif
 514                 /* let's send the command via the control pipe */
 515                 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 516                                          US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 517                                          0, us->ifnum,
 518                                          srb->cmd, srb->cmdlen, USB_CNTL_TIMEOUT*5);
 519                 USB_STOR_PRINTF("CB_transport: control msg returned %d, status %X\n",result,us->pusb_dev->status);
 520                 /* check the return code for the command */
 521                 if (result < 0) {
 522                         if(us->pusb_dev->status & USB_ST_STALLED) {
 523                                 status=us->pusb_dev->status;
 524                                 USB_STOR_PRINTF(" stall during command found, clear pipe\n");
 525                                 usb_clear_halt(us->pusb_dev,  usb_sndctrlpipe(us->pusb_dev,0));
 526                                 us->pusb_dev->status=status;
 527                         }
 528                         USB_STOR_PRINTF(" error during command %02X Stat = %X\n",srb->cmd[0],us->pusb_dev->status);
 529                         return result;
 530                 }
 531                 /* transfer the data payload for this command, if one exists*/
 532
 533                 USB_STOR_PRINTF("CB_transport: control msg returned %d, direction is %s to go 0x%lx\n",result,dir_in ? "IN" : "OUT",srb->datalen);
 534                 if (srb->datalen) {
 535                         result = us_one_transfer(us, pipe, (char *)srb->pdata,srb->datalen);
 536                         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);
 537                         if(!(us->pusb_dev->status & USB_ST_NAK_REC))
 538                                 break;
 539                 } /* if (srb->datalen) */
 540                 else
 541                         break;
 542         }
 543         /* return result */
 544
 545         return result;
 546 }
 547
 548
 549 int usb_stor_CBI_get_status (ccb * srb, struct us_data *us)
 550 {
 551         int timeout;
 552
 553         us->ip_wanted = 1;
 554         submit_int_msg (us->pusb_dev, us->irqpipe,
 555                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 556         timeout = 1000;
 557         while (timeout--) {
 558                 if ((volatile int *) us->ip_wanted == 0)
 559                         break;
 560                 wait_ms (10);
 561         }
 562         if (us->ip_wanted) {
 563                 printf ("       Did not get interrupt on CBI\n");
 564                 us->ip_wanted = 0;
 565                 return USB_STOR_TRANSPORT_ERROR;
 566         }
 567         USB_STOR_PRINTF
 568                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
 569                  us->ip_data, us->pusb_dev->irq_act_len,
 570                  us->pusb_dev->irq_status);
 571         /* UFI gives us ASC and ASCQ, like a request sense */
 572         if (us->subclass == US_SC_UFI) {
 573                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 574                     srb->cmd[0] == SCSI_INQUIRY)
 575                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 576                 else if (us->ip_data)
 577                         return USB_STOR_TRANSPORT_FAILED;
 578                 else
 579                         return USB_STOR_TRANSPORT_GOOD;
 580         }
 581         /* otherwise, we interpret the data normally */
 582         switch (us->ip_data) {
 583         case 0x0001:
 584                 return USB_STOR_TRANSPORT_GOOD;
 585         case 0x0002:
 586                 return USB_STOR_TRANSPORT_FAILED;
 587         default:
 588                 return USB_STOR_TRANSPORT_ERROR;
 589         }                       /* switch */
 590         return USB_STOR_TRANSPORT_ERROR;
 591 }
 592
 593 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 594 #define USB_TRANSPORT_NOT_READY_RETRY 10
 595
 596 /* clear a stall on an endpoint - special for BBB devices */
 597 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 598 {
 599         int result;
 600
 601         /* ENDPOINT_HALT = 0, so set value to 0 */
 602         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
 603                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 604                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT*5);
 605         return result;
 606 }
 607
 608 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 609 {
 610         int result, retry;
 611         int dir_in;
 612         int actlen, data_actlen;
 613         unsigned int pipe, pipein, pipeout;
 614         umass_bbb_csw_t csw;
 615 #ifdef BBB_XPORT_TRACE
 616         unsigned char *ptr;
 617         int index;
 618 #endif
 619
 620         dir_in = US_DIRECTION(srb->cmd[0]);
 621
 622         /* COMMAND phase */
 623         USB_STOR_PRINTF("COMMAND phase\n");
 624         result = usb_stor_BBB_comdat(srb, us);
 625         if (result < 0) {
 626                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
 627                         us->pusb_dev->status);
 628                 usb_stor_BBB_reset(us);
 629                 return USB_STOR_TRANSPORT_FAILED;
 630         }
 631         wait_ms(5);
 632         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 633         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 634         /* DATA phase + error handling */
 635         data_actlen = 0;
 636         /* no data, go immediately to the STATUS phase */
 637         if (srb->datalen == 0)
 638                 goto st;
 639         USB_STOR_PRINTF("DATA phase\n");
 640         if (dir_in)
 641                 pipe = pipein;
 642         else
 643                 pipe = pipeout;
 644         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, &data_actlen, USB_CNTL_TIMEOUT*5);
 645         /* special handling of STALL in DATA phase */
 646         if((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 647                 USB_STOR_PRINTF("DATA:stall\n");
 648                 /* clear the STALL on the endpoint */
 649                 result = usb_stor_BBB_clear_endpt_stall(us, dir_in? us->ep_in : us->ep_out);
 650                 if (result >= 0)
 651                         /* continue on to STATUS phase */
 652                         goto st;
 653         }
 654         if (result < 0) {
 655                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 656                         us->pusb_dev->status);
 657                 usb_stor_BBB_reset(us);
 658                 return USB_STOR_TRANSPORT_FAILED;
 659         }
 660 #ifdef BBB_XPORT_TRACE
 661         for (index = 0; index < data_actlen; index++)
 662                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 663         printf("\n");
 664 #endif
 665         /* STATUS phase + error handling */
 666    st:
 667         retry = 0;
 668    again:
 669         USB_STOR_PRINTF("STATUS phase\n");
 670         result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE,
 671                                 &actlen, USB_CNTL_TIMEOUT*5);
 672
 673         /* special handling of STALL in STATUS phase */
 674         if((result < 0) && (retry < 1) && (us->pusb_dev->status & USB_ST_STALLED)) {
 675                 USB_STOR_PRINTF("STATUS:stall\n");
 676                 /* clear the STALL on the endpoint */
 677                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 678                 if (result >= 0 && (retry++ < 1))
 679                         /* do a retry */
 680                         goto again;
 681         }
 682         if (result < 0) {
 683                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
 684                         us->pusb_dev->status);
 685                 usb_stor_BBB_reset(us);
 686                 return USB_STOR_TRANSPORT_FAILED;
 687         }
 688 #ifdef BBB_XPORT_TRACE
 689         ptr = (unsigned char *)&csw;
 690         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 691                 printf("ptr[%d] %#x ", index, ptr[index]);
 692         printf("\n");
 693 #endif
 694         /* misuse pipe to get the residue */
 695         pipe = swap_32(csw.dCSWDataResidue);
 696         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 697                 pipe = srb->datalen - data_actlen;
 698         if (CSWSIGNATURE != swap_32(csw.dCSWSignature)) {
 699                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
 700                 usb_stor_BBB_reset(us);
 701                 return USB_STOR_TRANSPORT_FAILED;
 702         } else if ((CBWTag - 1) != swap_32(csw.dCSWTag)) {
 703                 USB_STOR_PRINTF("!Tag\n");
 704                 usb_stor_BBB_reset(us);
 705                 return USB_STOR_TRANSPORT_FAILED;
 706         } else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
 707                 USB_STOR_PRINTF(">PHASE\n");
 708                 usb_stor_BBB_reset(us);
 709                 return USB_STOR_TRANSPORT_FAILED;
 710         } else if (csw.bCSWStatus == CSWSTATUS_PHASE) {
 711                 USB_STOR_PRINTF("=PHASE\n");
 712                 usb_stor_BBB_reset(us);
 713                 return USB_STOR_TRANSPORT_FAILED;
 714         } else if (data_actlen > srb->datalen) {
 715                 USB_STOR_PRINTF("transferred %dB instead of %dB\n",
 716                         data_actlen, srb->datalen);
 717                 return USB_STOR_TRANSPORT_FAILED;
 718         } else if (csw.bCSWStatus == CSWSTATUS_FAILED) {
 719                 USB_STOR_PRINTF("FAILED\n");
 720                 return USB_STOR_TRANSPORT_FAILED;
 721         }
 722
 723         return result;
 724 }
 725
 726 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 727 {
 728         int result,status;
 729         ccb *psrb;
 730         ccb reqsrb;
 731         int retry,notready;
 732
 733         psrb=&reqsrb;
 734         status=USB_STOR_TRANSPORT_GOOD;
 735         retry=0;
 736         notready=0;
 737         /* issue the command */
 738 do_retry:
 739         result=usb_stor_CB_comdat(srb,us);
 740         USB_STOR_PRINTF("command / Data returned %d, status %X\n",result,us->pusb_dev->status);
 741         /* if this is an CBI Protocol, get IRQ */
 742         if(us->protocol==US_PR_CBI) {
 743                 status=usb_stor_CBI_get_status(srb,us);
 744                 /* if the status is error, report it */
 745                 if(status==USB_STOR_TRANSPORT_ERROR) {
 746                         USB_STOR_PRINTF(" USB CBI Command Error\n");
 747                         return status;
 748                 }
 749                 srb->sense_buf[12]=(unsigned char)(us->ip_data>>8);
 750                 srb->sense_buf[13]=(unsigned char)(us->ip_data&0xff);
 751                 if(!us->ip_data) {
 752                 /* if the status is good, report it */
 753                         if(status==USB_STOR_TRANSPORT_GOOD) {
 754                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
 755                                 return status;
 756                         }
 757                 }
 758         }
 759         /* do we have to issue an auto request? */
 760         /* HERE we have to check the result */
 761         if((result<0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 762                 USB_STOR_PRINTF("ERROR %X\n",us->pusb_dev->status);
 763                 us->transport_reset(us);
 764                 return USB_STOR_TRANSPORT_ERROR;
 765         }
 766         if((us->protocol==US_PR_CBI) &&
 767                         ((srb->cmd[0]==SCSI_REQ_SENSE) ||
 768                         (srb->cmd[0]==SCSI_INQUIRY))) { /* do not issue an autorequest after request sense */
 769                 USB_STOR_PRINTF("No auto request and good\n");
 770                 return USB_STOR_TRANSPORT_GOOD;
 771         }
 772         /* issue an request_sense */
 773         memset(&psrb->cmd[0],0,12);
 774         psrb->cmd[0]=SCSI_REQ_SENSE;
 775         psrb->cmd[1]=srb->lun<<5;
 776         psrb->cmd[4]=18;
 777         psrb->datalen=18;
 778         psrb->pdata=&srb->sense_buf[0];
 779         psrb->cmdlen=12;
 780         /* issue the command */
 781         result=usb_stor_CB_comdat(psrb,us);
 782         USB_STOR_PRINTF("auto request returned %d\n",result);
 783         /* if this is an CBI Protocol, get IRQ */
 784         if(us->protocol==US_PR_CBI) {
 785                 status=usb_stor_CBI_get_status(psrb,us);
 786         }
 787         if((result<0)&&!(us->pusb_dev->status & USB_ST_STALLED)) {
 788                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n",us->pusb_dev->status);
 789                 return USB_STOR_TRANSPORT_ERROR;
 790         }
 791         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]);
 792         /* Check the auto request result */
 793         if((srb->sense_buf[2]==0) &&
 794                  (srb->sense_buf[12]==0) &&
 795                  (srb->sense_buf[13]==0)) /* ok, no sense */
 796                 return USB_STOR_TRANSPORT_GOOD;
 797         /* Check the auto request result */
 798         switch(srb->sense_buf[2]) {
 799         case 0x01: /* Recovered Error */
 800                 return USB_STOR_TRANSPORT_GOOD;
 801                 break;
 802         case 0x02: /* Not Ready */
 803                 if(notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 804                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X 0x%02X (NOT READY)\n",
 805                                 srb->cmd[0],srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 806                         return USB_STOR_TRANSPORT_FAILED;
 807                 } else {
 808                         wait_ms(100);
 809                         goto do_retry;
 810                 }
 811                 break;
 812         default:
 813                 if(retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 814                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 815                                 srb->cmd[0],srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 816                         return USB_STOR_TRANSPORT_FAILED;
 817                 } else {
 818                         goto do_retry;
 819                 }
 820                 break;
 821         }
 822         return USB_STOR_TRANSPORT_FAILED;
 823 }
 824
 825
 826 static int usb_inquiry(ccb *srb,struct us_data *ss)
 827 {
 828         int retry,i;
 829         retry=5;
 830         do {
 831                 memset(&srb->cmd[0],0,12);
 832                 srb->cmd[0]=SCSI_INQUIRY;
 833                 srb->cmd[1]=srb->lun<<5;
 834                 srb->cmd[4]=36;
 835                 srb->datalen=36;
 836                 srb->cmdlen=12;
 837                 i=ss->transport(srb,ss);
 838                 USB_STOR_PRINTF("inquiry returns %d\n",i);
 839                 if(i==0)
 840                         break;
 841         } while(retry--);
 842
 843         if(!retry) {
 844                 printf("error in inquiry\n");
 845                 return -1;
 846         }
 847         return 0;
 848 }
 849
 850 static int usb_request_sense(ccb *srb,struct us_data *ss)
 851 {
 852         char *ptr;
 853
 854         ptr=(char *)srb->pdata;
 855         memset(&srb->cmd[0],0,12);
 856         srb->cmd[0]=SCSI_REQ_SENSE;
 857         srb->cmd[1]=srb->lun<<5;
 858         srb->cmd[4]=18;
 859         srb->datalen=18;
 860         srb->pdata=&srb->sense_buf[0];
 861         srb->cmdlen=12;
 862         ss->transport(srb,ss);
 863         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 864         srb->pdata=(uchar *)ptr;
 865         return 0;
 866 }
 867
 868 static int usb_test_unit_ready(ccb *srb,struct us_data *ss)
 869 {
 870         int retries = 10;
 871
 872         do {
 873                 memset(&srb->cmd[0],0,12);
 874                 srb->cmd[0]=SCSI_TST_U_RDY;
 875                 srb->cmd[1]=srb->lun<<5;
 876                 srb->datalen=0;
 877                 srb->cmdlen=12;
 878                 if(ss->transport(srb,ss)==USB_STOR_TRANSPORT_GOOD) {
 879                         return 0;
 880                 }
 881                 usb_request_sense (srb, ss);
 882                 wait_ms (100);
 883         } while(retries--);
 884
 885         return -1;
 886 }
 887
 888 static int usb_read_capacity(ccb *srb,struct us_data *ss)
 889 {
 890         int retry;
 891         retry = 3; /* retries */
 892         do {
 893                 memset(&srb->cmd[0],0,12);
 894                 srb->cmd[0]=SCSI_RD_CAPAC;
 895                 srb->cmd[1]=srb->lun<<5;
 896                 srb->datalen=8;
 897                 srb->cmdlen=12;
 898                 if(ss->transport(srb,ss)==USB_STOR_TRANSPORT_GOOD) {
 899                         return 0;
 900                 }
 901         } while(retry--);
 902
 903         return -1;
 904 }
 905
 906 static int usb_read_10(ccb *srb,struct us_data *ss, unsigned long start, unsigned short blocks)
 907 {
 908         memset(&srb->cmd[0],0,12);
 909         srb->cmd[0]=SCSI_READ10;
 910         srb->cmd[1]=srb->lun<<5;
 911         srb->cmd[2]=((unsigned char) (start>>24))&0xff;
 912         srb->cmd[3]=((unsigned char) (start>>16))&0xff;
 913         srb->cmd[4]=((unsigned char) (start>>8))&0xff;
 914         srb->cmd[5]=((unsigned char) (start))&0xff;
 915         srb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 916         srb->cmd[8]=(unsigned char) blocks & 0xff;
 917         srb->cmdlen=12;
 918         USB_STOR_PRINTF("read10: start %lx blocks %x\n",start,blocks);
 919         return ss->transport(srb,ss);
 920 }
 921
 922
 923 #ifdef CONFIG_USB_BIN_FIXUP
 924 /*
 925  * Some USB storage devices queried for SCSI identification data respond with
 926  * binary strings, which if output to the console freeze the terminal. The
 927  * workaround is to modify the vendor and product strings read from such
 928  * device with proper values (as reported by 'usb info').
 929  *
 930  * Vendor and product length limits are taken from the definition of
 931  * block_dev_desc_t in include/part.h.
 932  */
 933 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
 934                                 unsigned char vendor[],
 935                                 unsigned char product[]) {
 936         const unsigned char max_vendor_len = 40;
 937         const unsigned char max_product_len = 20;
 938         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
 939                 strncpy ((char *)vendor, "SMSC", max_vendor_len);
 940                 strncpy ((char *)product, "Flash Media Cntrller", max_product_len);
 941         }
 942 }
 943 #endif /* CONFIG_USB_BIN_FIXUP */
 944
 945 #define USB_MAX_READ_BLK 20
 946
 947 unsigned long usb_stor_read(int device, unsigned long blknr, unsigned long blkcnt, void *buffer)
 948 {
 949         unsigned long start,blks, buf_addr;
 950         unsigned short smallblks;
 951         struct usb_device *dev;
 952         int retry,i;
 953         ccb *srb = &usb_ccb;
 954
 955         if (blkcnt == 0)
 956                 return 0;
 957
 958         device &= 0xff;
 959         /* Setup  device
 960          */
 961         USB_STOR_PRINTF("\nusb_read: dev %d \n",device);
 962         dev=NULL;
 963         for(i=0;i<USB_MAX_DEVICE;i++) {
 964                 dev=usb_get_dev_index(i);
 965                 if(dev==NULL) {
 966                         return 0;
 967                 }
 968                 if(dev->devnum==usb_dev_desc[device].target)
 969                         break;
 970         }
 971
 972         usb_disable_asynch(1); /* asynch transfer not allowed */
 973         srb->lun=usb_dev_desc[device].lun;
 974         buf_addr=(unsigned long)buffer;
 975         start=blknr;
 976         blks=blkcnt;
 977         if(usb_test_unit_ready(srb,(struct us_data *)dev->privptr)) {
 978                 printf("Device NOT ready\n   Request Sense returned %02X %02X %02X\n",
 979                         srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
 980                 return 0;
 981         }
 982         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks, buf_addr);
 983         do {
 984                 retry=2;
 985                 srb->pdata=(unsigned char *)buf_addr;
 986                 if(blks>USB_MAX_READ_BLK) {
 987                         smallblks=USB_MAX_READ_BLK;
 988                 } else {
 989                         smallblks=(unsigned short) blks;
 990                 }
 991 retry_it:
 992                 if(smallblks==USB_MAX_READ_BLK)
 993                         usb_show_progress();
 994                 srb->datalen=usb_dev_desc[device].blksz * smallblks;
 995                 srb->pdata=(unsigned char *)buf_addr;
 996                 if(usb_read_10(srb,(struct us_data *)dev->privptr, start, smallblks)) {
 997                         USB_STOR_PRINTF("Read ERROR\n");
 998                         usb_request_sense(srb,(struct us_data *)dev->privptr);
 999                         if(retry--)
1000                                 goto retry_it;
1001                         blkcnt-=blks;
1002                         break;
1003                 }
1004                 start+=smallblks;
1005                 blks-=smallblks;
1006                 buf_addr+=srb->datalen;
1007         } while(blks!=0);
1008         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
1009         usb_disable_asynch(0); /* asynch transfer allowed */
1010         if(blkcnt>=USB_MAX_READ_BLK)
1011                 printf("\n");
1012         return(blkcnt);
1013 }
1014
1015
1016 /* Probe to see if a new device is actually a Storage device */
1017 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,struct us_data *ss)
1018 {
1019         struct usb_interface_descriptor *iface;
1020         int i;
1021         unsigned int flags = 0;
1022
1023         int protocol = 0;
1024         int subclass = 0;
1025
1026         /* let's examine the device now */
1027         iface = &dev->config.if_desc[ifnum];
1028
1029 #if 0
1030         /* this is the place to patch some storage devices */
1031         USB_STOR_PRINTF("iVendor %X iProduct %X\n",dev->descriptor.idVendor,dev->descriptor.idProduct);
1032         if ((dev->descriptor.idVendor) == 0x066b && (dev->descriptor.idProduct) == 0x0103) {
1033                 USB_STOR_PRINTF("patched for E-USB\n");
1034                 protocol = US_PR_CB;
1035                 subclass = US_SC_UFI;       /* an assumption */
1036         }
1037 #endif
1038
1039         if (dev->descriptor.bDeviceClass != 0 ||
1040                         iface->bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1041                         iface->bInterfaceSubClass < US_SC_MIN ||
1042                         iface->bInterfaceSubClass > US_SC_MAX) {
1043                 /* if it's not a mass storage, we go no further */
1044                 return 0;
1045         }
1046
1047         memset(ss, 0, sizeof(struct us_data));
1048
1049         /* At this point, we know we've got a live one */
1050         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1051
1052         /* Initialize the us_data structure with some useful info */
1053         ss->flags = flags;
1054         ss->ifnum = ifnum;
1055         ss->pusb_dev = dev;
1056         ss->attention_done = 0;
1057
1058         /* If the device has subclass and protocol, then use that.  Otherwise,
1059          * take data from the specific interface.
1060          */
1061         if (subclass) {
1062                 ss->subclass = subclass;
1063                 ss->protocol = protocol;
1064         } else {
1065                 ss->subclass = iface->bInterfaceSubClass;
1066                 ss->protocol = iface->bInterfaceProtocol;
1067         }
1068
1069         /* set the handler pointers based on the protocol */
1070         USB_STOR_PRINTF("Transport: ");
1071         switch (ss->protocol) {
1072         case US_PR_CB:
1073                 USB_STOR_PRINTF("Control/Bulk\n");
1074                 ss->transport = usb_stor_CB_transport;
1075                 ss->transport_reset = usb_stor_CB_reset;
1076                 break;
1077
1078         case US_PR_CBI:
1079                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1080                 ss->transport = usb_stor_CB_transport;
1081                 ss->transport_reset = usb_stor_CB_reset;
1082                 break;
1083         case US_PR_BULK:
1084                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1085                 ss->transport = usb_stor_BBB_transport;
1086                 ss->transport_reset = usb_stor_BBB_reset;
1087                 break;
1088         default:
1089                 printf("USB Storage Transport unknown / not yet implemented\n");
1090                 return 0;
1091                 break;
1092         }
1093
1094         /*
1095          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1096          * An optional interrupt is OK (necessary for CBI protocol).
1097          * We will ignore any others.
1098          */
1099         for (i = 0; i < iface->bNumEndpoints; i++) {
1100                 /* is it an BULK endpoint? */
1101                 if ((iface->ep_desc[i].bmAttributes &  USB_ENDPOINT_XFERTYPE_MASK)
1102                     == USB_ENDPOINT_XFER_BULK) {
1103                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1104                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1105                                         USB_ENDPOINT_NUMBER_MASK;
1106                         else
1107                                 ss->ep_out = iface->ep_desc[i].bEndpointAddress &
1108                                         USB_ENDPOINT_NUMBER_MASK;
1109                 }
1110
1111                 /* is it an interrupt endpoint? */
1112                 if ((iface->ep_desc[i].bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1113                     == USB_ENDPOINT_XFER_INT) {
1114                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1115                                 USB_ENDPOINT_NUMBER_MASK;
1116                         ss->irqinterval = iface->ep_desc[i].bInterval;
1117                 }
1118         }
1119         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1120                   ss->ep_in, ss->ep_out, ss->ep_int);
1121
1122         /* Do some basic sanity checks, and bail if we find a problem */
1123         if (usb_set_interface(dev, iface->bInterfaceNumber, 0) ||
1124             !ss->ep_in || !ss->ep_out ||
1125             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1126                 USB_STOR_PRINTF("Problems with device\n");
1127                 return 0;
1128         }
1129         /* set class specific stuff */
1130         /* We only handle certain protocols.  Currently, these are
1131          * the only ones.
1132          * The SFF8070 accepts the requests used in u-boot
1133          */
1134         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1135             ss->subclass != US_SC_8070) {
1136                 printf("Sorry, protocol %d not yet supported.\n",ss->subclass);
1137                 return 0;
1138         }
1139         if(ss->ep_int) { /* we had found an interrupt endpoint, prepare irq pipe */
1140                 /* set up the IRQ pipe and handler */
1141
1142                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1143                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1144                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1145                 dev->irq_handle=usb_stor_irq;
1146         }
1147         dev->privptr=(void *)ss;
1148         return 1;
1149 }
1150
1151 int usb_stor_get_info(struct usb_device *dev,struct us_data *ss,block_dev_desc_t *dev_desc)
1152 {
1153         unsigned char perq,modi;
1154         unsigned long cap[2];
1155         unsigned long *capacity,*blksz;
1156         ccb *pccb = &usb_ccb;
1157
1158         /* for some reasons a couple of devices would not survive this reset */
1159         if (
1160             /* Sony USM256E */
1161             (dev->descriptor.idVendor == 0x054c &&
1162              dev->descriptor.idProduct == 0x019e)
1163
1164             ||
1165             /* USB007 Mini-USB2 Flash Drive */
1166             (dev->descriptor.idVendor == 0x066f &&
1167              dev->descriptor.idProduct == 0x2010)
1168             ||
1169             /* SanDisk Corporation Cruzer Micro 20044318410546613953 */
1170             (dev->descriptor.idVendor == 0x0781 &&
1171              dev->descriptor.idProduct == 0x5151)
1172             )
1173                 USB_STOR_PRINTF("usb_stor_get_info: skipping RESET..\n");
1174         else
1175                 ss->transport_reset(ss);
1176
1177         pccb->pdata = usb_stor_buf;
1178
1179         dev_desc->target = dev->devnum;
1180         pccb->lun = dev_desc->lun;
1181         USB_STOR_PRINTF(" address %d\n",dev_desc->target);
1182
1183         if(usb_inquiry(pccb,ss))
1184                 return -1;
1185
1186         perq = usb_stor_buf[0];
1187         modi = usb_stor_buf[1];
1188         if((perq & 0x1f) == 0x1f) {
1189                 return 0; /* skip unknown devices */
1190         }
1191         if((modi&0x80) == 0x80) {/* drive is removable */
1192                 dev_desc->removable = 1;
1193         }
1194         memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
1195         memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
1196         memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
1197         dev_desc->vendor[8] = 0;
1198         dev_desc->product[16] = 0;
1199         dev_desc->revision[4] = 0;
1200 #ifdef CONFIG_USB_BIN_FIXUP
1201         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, (uchar *)dev_desc->product);
1202 #endif /* CONFIG_USB_BIN_FIXUP */
1203         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n",usb_stor_buf[2],usb_stor_buf[3]);
1204         if(usb_test_unit_ready(pccb,ss)) {
1205                 printf("Device NOT ready\n   Request Sense returned %02X %02X %02X\n",pccb->sense_buf[2],pccb->sense_buf[12],pccb->sense_buf[13]);
1206                 if(dev_desc->removable == 1) {
1207                         dev_desc->type = perq;
1208                         return 1;
1209                 }
1210                 else
1211                         return 0;
1212         }
1213         pccb->pdata = (unsigned char *)&cap[0];
1214         memset(pccb->pdata,0,8);
1215         if(usb_read_capacity(pccb,ss) != 0) {
1216                 printf("READ_CAP ERROR\n");
1217                 cap[0] = 2880;
1218                 cap[1] = 0x200;
1219         }
1220         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n",cap[0],cap[1]);
1221 #if 0
1222         if(cap[0]>(0x200000 * 10)) /* greater than 10 GByte */
1223                 cap[0]>>=16;
1224 #endif
1225 #ifdef LITTLEENDIAN
1226         cap[0] = ((unsigned long)(
1227                 (((unsigned long)(cap[0]) & (unsigned long)0x000000ffUL) << 24) |
1228                 (((unsigned long)(cap[0]) & (unsigned long)0x0000ff00UL) <<  8) |
1229                 (((unsigned long)(cap[0]) & (unsigned long)0x00ff0000UL) >>  8) |
1230                 (((unsigned long)(cap[0]) & (unsigned long)0xff000000UL) >> 24) ));
1231         cap[1] = ((unsigned long)(
1232                 (((unsigned long)(cap[1]) & (unsigned long)0x000000ffUL) << 24) |
1233                 (((unsigned long)(cap[1]) & (unsigned long)0x0000ff00UL) <<  8) |
1234                 (((unsigned long)(cap[1]) & (unsigned long)0x00ff0000UL) >>  8) |
1235                 (((unsigned long)(cap[1]) & (unsigned long)0xff000000UL) >> 24) ));
1236 #endif
1237         /* this assumes bigendian! */
1238         cap[0] += 1;
1239         capacity = &cap[0];
1240         blksz = &cap[1];
1241         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",*capacity,*blksz);
1242         dev_desc->lba = *capacity;
1243         dev_desc->blksz = *blksz;
1244         dev_desc->type = perq;
1245         USB_STOR_PRINTF(" address %d\n",dev_desc->target);
1246         USB_STOR_PRINTF("partype: %d\n",dev_desc->part_type);
1247
1248         init_part(dev_desc);
1249
1250         USB_STOR_PRINTF("partype: %d\n",dev_desc->part_type);
1251         return 1;
1252 }
1253
1254 #endif /* CONFIG_USB_STORAGE */
1255 #endif