git.sur5r.net Git - u-boot/blob - common/usb_storage.c

   1 /*
   2  * Most of this source has been derived from the Linux USB
   3  * project:
   4  *   (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
   5  *   (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org)
   6  *   (c) 1999 Michael Gee (michael@linuxspecific.com)
   7  *   (c) 2000 Yggdrasil Computing, Inc.
   8  *
   9  *
  10  * Adapted for U-Boot:
  11  *   (C) Copyright 2001 Denis Peter, MPL AG Switzerland
  12  *
  13  * For BBB support (C) Copyright 2003
  14  * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
  15  *
  16  * BBB support based on /sys/dev/usb/umass.c from
  17  * FreeBSD.
  18  *
  19  * SPDX-License-Identifier:     GPL-2.0+
  20  */
  21
  22 /* Note:
  23  * Currently only the CBI transport protocoll has been implemented, and it
  24  * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
  25  * transport protocoll may work as well.
  26  */
  27 /*
  28  * New Note:
  29  * Support for USB Mass Storage Devices (BBB) has been added. It has
  30  * only been tested with USB memory sticks.
  31  */
  32
  33
  34 #include <common.h>
  35 #include <command.h>
  36 #include <inttypes.h>
  37 #include <asm/byteorder.h>
  38 #include <asm/processor.h>
  39
  40 #include <part.h>
  41 #include <usb.h>
  42
  43 #undef BBB_COMDAT_TRACE
  44 #undef BBB_XPORT_TRACE
  45
  46 #include <scsi.h>
  47 /* direction table -- this indicates the direction of the data
  48  * transfer for each command code -- a 1 indicates input
  49  */
  50 static const unsigned char us_direction[256/8] = {
  51         0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
  52         0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
  53         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
  54         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
  55 };
  56 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
  57
  58 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN)));
  59
  60 /*
  61  * CBI style
  62  */
  63
  64 #define US_CBI_ADSC             0
  65
  66 /*
  67  * BULK only
  68  */
  69 #define US_BBB_RESET            0xff
  70 #define US_BBB_GET_MAX_LUN      0xfe
  71
  72 /* Command Block Wrapper */
  73 typedef struct {
  74         __u32           dCBWSignature;
  75 #       define CBWSIGNATURE     0x43425355
  76         __u32           dCBWTag;
  77         __u32           dCBWDataTransferLength;
  78         __u8            bCBWFlags;
  79 #       define CBWFLAGS_OUT     0x00
  80 #       define CBWFLAGS_IN      0x80
  81         __u8            bCBWLUN;
  82         __u8            bCDBLength;
  83 #       define CBWCDBLENGTH     16
  84         __u8            CBWCDB[CBWCDBLENGTH];
  85 } umass_bbb_cbw_t;
  86 #define UMASS_BBB_CBW_SIZE      31
  87 static __u32 CBWTag;
  88
  89 /* Command Status Wrapper */
  90 typedef struct {
  91         __u32           dCSWSignature;
  92 #       define CSWSIGNATURE     0x53425355
  93         __u32           dCSWTag;
  94         __u32           dCSWDataResidue;
  95         __u8            bCSWStatus;
  96 #       define CSWSTATUS_GOOD   0x0
  97 #       define CSWSTATUS_FAILED 0x1
  98 #       define CSWSTATUS_PHASE  0x2
  99 } umass_bbb_csw_t;
 100 #define UMASS_BBB_CSW_SIZE      13
 101
 102 #define USB_MAX_STOR_DEV 5
 103 static int usb_max_devs; /* number of highest available usb device */
 104
 105 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV];
 106
 107 struct us_data;
 108 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data);
 109 typedef int (*trans_reset)(struct us_data *data);
 110
 111 struct us_data {
 112         struct usb_device *pusb_dev;     /* this usb_device */
 113
 114         unsigned int    flags;                  /* from filter initially */
 115 #       define USB_READY        (1 << 0)
 116         unsigned char   ifnum;                  /* interface number */
 117         unsigned char   ep_in;                  /* in endpoint */
 118         unsigned char   ep_out;                 /* out ....... */
 119         unsigned char   ep_int;                 /* interrupt . */
 120         unsigned char   subclass;               /* as in overview */
 121         unsigned char   protocol;               /* .............. */
 122         unsigned char   attention_done;         /* force attn on first cmd */
 123         unsigned short  ip_data;                /* interrupt data */
 124         int             action;                 /* what to do */
 125         int             ip_wanted;              /* needed */
 126         int             *irq_handle;            /* for USB int requests */
 127         unsigned int    irqpipe;                /* pipe for release_irq */
 128         unsigned char   irqmaxp;                /* max packed for irq Pipe */
 129         unsigned char   irqinterval;            /* Intervall for IRQ Pipe */
 130         ccb             *srb;                   /* current srb */
 131         trans_reset     transport_reset;        /* reset routine */
 132         trans_cmnd      transport;              /* transport routine */
 133 };
 134
 135 #ifdef CONFIG_USB_EHCI
 136 /*
 137  * The U-Boot EHCI driver can handle any transfer length as long as there is
 138  * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are
 139  * limited to 65535 blocks.
 140  */
 141 #define USB_MAX_XFER_BLK        65535
 142 #else
 143 #define USB_MAX_XFER_BLK        20
 144 #endif
 145
 146 static struct us_data usb_stor[USB_MAX_STOR_DEV];
 147
 148
 149 #define USB_STOR_TRANSPORT_GOOD    0
 150 #define USB_STOR_TRANSPORT_FAILED -1
 151 #define USB_STOR_TRANSPORT_ERROR  -2
 152
 153 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
 154                       block_dev_desc_t *dev_desc);
 155 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
 156                       struct us_data *ss);
 157 unsigned long usb_stor_read(int device, lbaint_t blknr,
 158                             lbaint_t blkcnt, void *buffer);
 159 unsigned long usb_stor_write(int device, lbaint_t blknr,
 160                              lbaint_t blkcnt, const void *buffer);
 161 struct usb_device * usb_get_dev_index(int index);
 162 void uhci_show_temp_int_td(void);
 163
 164 #ifdef CONFIG_PARTITIONS
 165 block_dev_desc_t *usb_stor_get_dev(int index)
 166 {
 167         return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL;
 168 }
 169 #endif
 170
 171 static void usb_show_progress(void)
 172 {
 173         debug(".");
 174 }
 175
 176 /*******************************************************************************
 177  * show info on storage devices; 'usb start/init' must be invoked earlier
 178  * as we only retrieve structures populated during devices initialization
 179  */
 180 int usb_stor_info(void)
 181 {
 182         int i;
 183
 184         if (usb_max_devs > 0) {
 185                 for (i = 0; i < usb_max_devs; i++) {
 186                         printf("  Device %d: ", i);
 187                         dev_print(&usb_dev_desc[i]);
 188                 }
 189                 return 0;
 190         }
 191
 192         printf("No storage devices, perhaps not 'usb start'ed..?\n");
 193         return 1;
 194 }
 195
 196 static unsigned int usb_get_max_lun(struct us_data *us)
 197 {
 198         int len;
 199         ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
 200         len = usb_control_msg(us->pusb_dev,
 201                               usb_rcvctrlpipe(us->pusb_dev, 0),
 202                               US_BBB_GET_MAX_LUN,
 203                               USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
 204                               0, us->ifnum,
 205                               result, sizeof(char),
 206                               USB_CNTL_TIMEOUT * 5);
 207         debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result);
 208         return (len > 0) ? *result : 0;
 209 }
 210
 211 static int usb_storage_register(struct usb_device *dev, unsigned char iface)
 212 {
 213         int lun, max_lun, start = usb_max_devs;
 214         int nb_dev = 0;
 215
 216         if (!usb_storage_probe(dev, iface, &usb_stor[usb_max_devs]))
 217                 return nb_dev;
 218
 219         /*
 220          * OK, it's a storage device.  Iterate over its LUNs
 221          * and populate `usb_dev_desc'.
 222          */
 223         max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
 224         for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; lun++) {
 225                 usb_dev_desc[usb_max_devs].lun = lun;
 226                 if (usb_stor_get_info(dev, &usb_stor[start],
 227                     &usb_dev_desc[usb_max_devs]) == 1) {
 228                         nb_dev++;
 229                 }
 230         }
 231
 232         return nb_dev;
 233 }
 234
 235 /*******************************************************************************
 236  * scan the usb and reports device info
 237  * to the user if mode = 1
 238  * returns current device or -1 if no
 239  */
 240 int usb_stor_scan(int mode)
 241 {
 242         unsigned char i, iface;
 243         struct usb_device *dev;
 244
 245         if (mode == 1)
 246                 printf("       scanning usb for storage devices... ");
 247
 248         usb_disable_asynch(1); /* asynch transfer not allowed */
 249
 250         for (i = 0; i < USB_MAX_STOR_DEV; i++) {
 251                 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
 252                 usb_dev_desc[i].if_type = IF_TYPE_USB;
 253                 usb_dev_desc[i].dev = i;
 254                 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
 255                 usb_dev_desc[i].target = 0xff;
 256                 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
 257                 usb_dev_desc[i].block_read = usb_stor_read;
 258                 usb_dev_desc[i].block_write = usb_stor_write;
 259         }
 260
 261         usb_max_devs = 0;
 262         for (i = 0; i < USB_MAX_DEVICE; i++) {
 263                 dev = usb_get_dev_index(i); /* get device */
 264                 debug("i=%d\n", i);
 265                 if (dev == NULL)
 266                         break; /* no more devices available */
 267
 268                 for (iface = 0; iface < dev->config.no_of_if; iface++) {
 269                         usb_max_devs += usb_storage_register(dev, iface);
 270                 }
 271
 272                 /* if storage device */
 273                 if (usb_max_devs == USB_MAX_STOR_DEV) {
 274                         printf("max USB Storage Device reached: %d stopping\n",
 275                                 usb_max_devs);
 276                         break;
 277                 }
 278         } /* for */
 279
 280         usb_disable_asynch(0); /* asynch transfer allowed */
 281         printf("%d Storage Device(s) found\n", usb_max_devs);
 282         if (usb_max_devs > 0)
 283                 return 0;
 284         return -1;
 285 }
 286
 287 static int usb_stor_irq(struct usb_device *dev)
 288 {
 289         struct us_data *us;
 290         us = (struct us_data *)dev->privptr;
 291
 292         if (us->ip_wanted)
 293                 us->ip_wanted = 0;
 294         return 0;
 295 }
 296
 297
 298 #ifdef  DEBUG
 299
 300 static void usb_show_srb(ccb *pccb)
 301 {
 302         int i;
 303         printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
 304         for (i = 0; i < 12; i++)
 305                 printf("%02X ", pccb->cmd[i]);
 306         printf("\n");
 307 }
 308
 309 static void display_int_status(unsigned long tmp)
 310 {
 311         printf("Status: %s %s %s %s %s %s %s\n",
 312                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
 313                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
 314                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
 315                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
 316                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
 317                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
 318                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
 319 }
 320 #endif
 321 /***********************************************************************
 322  * Data transfer routines
 323  ***********************************************************************/
 324
 325 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
 326 {
 327         int max_size;
 328         int this_xfer;
 329         int result;
 330         int partial;
 331         int maxtry;
 332         int stat;
 333
 334         /* determine the maximum packet size for these transfers */
 335         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
 336
 337         /* while we have data left to transfer */
 338         while (length) {
 339
 340                 /* calculate how long this will be -- maximum or a remainder */
 341                 this_xfer = length > max_size ? max_size : length;
 342                 length -= this_xfer;
 343
 344                 /* setup the retry counter */
 345                 maxtry = 10;
 346
 347                 /* set up the transfer loop */
 348                 do {
 349                         /* transfer the data */
 350                         debug("Bulk xfer 0x%x(%d) try #%d\n",
 351                               (unsigned int)buf, this_xfer, 11 - maxtry);
 352                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
 353                                               this_xfer, &partial,
 354                                               USB_CNTL_TIMEOUT * 5);
 355                         debug("bulk_msg returned %d xferred %d/%d\n",
 356                               result, partial, this_xfer);
 357                         if (us->pusb_dev->status != 0) {
 358                                 /* if we stall, we need to clear it before
 359                                  * we go on
 360                                  */
 361 #ifdef DEBUG
 362                                 display_int_status(us->pusb_dev->status);
 363 #endif
 364                                 if (us->pusb_dev->status & USB_ST_STALLED) {
 365                                         debug("stalled ->clearing endpoint" \
 366                                               "halt for pipe 0x%x\n", pipe);
 367                                         stat = us->pusb_dev->status;
 368                                         usb_clear_halt(us->pusb_dev, pipe);
 369                                         us->pusb_dev->status = stat;
 370                                         if (this_xfer == partial) {
 371                                                 debug("bulk transferred" \
 372                                                       "with error %lX," \
 373                                                       " but data ok\n",
 374                                                       us->pusb_dev->status);
 375                                                 return 0;
 376                                         }
 377                                         else
 378                                                 return result;
 379                                 }
 380                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
 381                                         debug("Device NAKed bulk_msg\n");
 382                                         return result;
 383                                 }
 384                                 debug("bulk transferred with error");
 385                                 if (this_xfer == partial) {
 386                                         debug(" %ld, but data ok\n",
 387                                               us->pusb_dev->status);
 388                                         return 0;
 389                                 }
 390                                 /* if our try counter reaches 0, bail out */
 391                                         debug(" %ld, data %d\n",
 392                                               us->pusb_dev->status, partial);
 393                                 if (!maxtry--)
 394                                                 return result;
 395                         }
 396                         /* update to show what data was transferred */
 397                         this_xfer -= partial;
 398                         buf += partial;
 399                         /* continue until this transfer is done */
 400                 } while (this_xfer);
 401         }
 402
 403         /* if we get here, we're done and successful */
 404         return 0;
 405 }
 406
 407 static int usb_stor_BBB_reset(struct us_data *us)
 408 {
 409         int result;
 410         unsigned int pipe;
 411
 412         /*
 413          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
 414          *
 415          * For Reset Recovery the host shall issue in the following order:
 416          * a) a Bulk-Only Mass Storage Reset
 417          * b) a Clear Feature HALT to the Bulk-In endpoint
 418          * c) a Clear Feature HALT to the Bulk-Out endpoint
 419          *
 420          * This is done in 3 steps.
 421          *
 422          * If the reset doesn't succeed, the device should be port reset.
 423          *
 424          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
 425          */
 426         debug("BBB_reset\n");
 427         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 428                                  US_BBB_RESET,
 429                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 430                                  0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
 431
 432         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 433                 debug("RESET:stall\n");
 434                 return -1;
 435         }
 436
 437         /* long wait for reset */
 438         mdelay(150);
 439         debug("BBB_reset result %d: status %lX reset\n",
 440               result, us->pusb_dev->status);
 441         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 442         result = usb_clear_halt(us->pusb_dev, pipe);
 443         /* long wait for reset */
 444         mdelay(150);
 445         debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
 446               result, us->pusb_dev->status);
 447         /* long wait for reset */
 448         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 449         result = usb_clear_halt(us->pusb_dev, pipe);
 450         mdelay(150);
 451         debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
 452               result, us->pusb_dev->status);
 453         debug("BBB_reset done\n");
 454         return 0;
 455 }
 456
 457 /* FIXME: this reset function doesn't really reset the port, and it
 458  * should. Actually it should probably do what it's doing here, and
 459  * reset the port physically
 460  */
 461 static int usb_stor_CB_reset(struct us_data *us)
 462 {
 463         unsigned char cmd[12];
 464         int result;
 465
 466         debug("CB_reset\n");
 467         memset(cmd, 0xff, sizeof(cmd));
 468         cmd[0] = SCSI_SEND_DIAG;
 469         cmd[1] = 4;
 470         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 471                                  US_CBI_ADSC,
 472                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 473                                  0, us->ifnum, cmd, sizeof(cmd),
 474                                  USB_CNTL_TIMEOUT * 5);
 475
 476         /* long wait for reset */
 477         mdelay(1500);
 478         debug("CB_reset result %d: status %lX clearing endpoint halt\n",
 479               result, us->pusb_dev->status);
 480         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
 481         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
 482
 483         debug("CB_reset done\n");
 484         return 0;
 485 }
 486
 487 /*
 488  * Set up the command for a BBB device. Note that the actual SCSI
 489  * command is copied into cbw.CBWCDB.
 490  */
 491 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 492 {
 493         int result;
 494         int actlen;
 495         int dir_in;
 496         unsigned int pipe;
 497         ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_cbw_t, cbw, 1);
 498
 499         dir_in = US_DIRECTION(srb->cmd[0]);
 500
 501 #ifdef BBB_COMDAT_TRACE
 502         printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
 503                 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
 504                 srb->pdata);
 505         if (srb->cmdlen) {
 506                 for (result = 0; result < srb->cmdlen; result++)
 507                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
 508                 printf("\n");
 509         }
 510 #endif
 511         /* sanity checks */
 512         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
 513                 debug("usb_stor_BBB_comdat:cmdlen too large\n");
 514                 return -1;
 515         }
 516
 517         /* always OUT to the ep */
 518         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 519
 520         cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
 521         cbw->dCBWTag = cpu_to_le32(CBWTag++);
 522         cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
 523         cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
 524         cbw->bCBWLUN = srb->lun;
 525         cbw->bCDBLength = srb->cmdlen;
 526         /* copy the command data into the CBW command data buffer */
 527         /* DST SRC LEN!!! */
 528         memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
 529         result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
 530                               &actlen, USB_CNTL_TIMEOUT * 5);
 531         if (result < 0)
 532                 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
 533         return result;
 534 }
 535
 536 /* FIXME: we also need a CBI_command which sets up the completion
 537  * interrupt, and waits for it
 538  */
 539 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 540 {
 541         int result = 0;
 542         int dir_in, retry;
 543         unsigned int pipe;
 544         unsigned long status;
 545
 546         retry = 5;
 547         dir_in = US_DIRECTION(srb->cmd[0]);
 548
 549         if (dir_in)
 550                 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 551         else
 552                 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 553
 554         while (retry--) {
 555                 debug("CBI gets a command: Try %d\n", 5 - retry);
 556 #ifdef DEBUG
 557                 usb_show_srb(srb);
 558 #endif
 559                 /* let's send the command via the control pipe */
 560                 result = usb_control_msg(us->pusb_dev,
 561                                          usb_sndctrlpipe(us->pusb_dev , 0),
 562                                          US_CBI_ADSC,
 563                                          USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 564                                          0, us->ifnum,
 565                                          srb->cmd, srb->cmdlen,
 566                                          USB_CNTL_TIMEOUT * 5);
 567                 debug("CB_transport: control msg returned %d, status %lX\n",
 568                       result, us->pusb_dev->status);
 569                 /* check the return code for the command */
 570                 if (result < 0) {
 571                         if (us->pusb_dev->status & USB_ST_STALLED) {
 572                                 status = us->pusb_dev->status;
 573                                 debug(" stall during command found," \
 574                                       " clear pipe\n");
 575                                 usb_clear_halt(us->pusb_dev,
 576                                               usb_sndctrlpipe(us->pusb_dev, 0));
 577                                 us->pusb_dev->status = status;
 578                         }
 579                         debug(" error during command %02X" \
 580                               " Stat = %lX\n", srb->cmd[0],
 581                               us->pusb_dev->status);
 582                         return result;
 583                 }
 584                 /* transfer the data payload for this command, if one exists*/
 585
 586                 debug("CB_transport: control msg returned %d," \
 587                       " direction is %s to go 0x%lx\n", result,
 588                       dir_in ? "IN" : "OUT", srb->datalen);
 589                 if (srb->datalen) {
 590                         result = us_one_transfer(us, pipe, (char *)srb->pdata,
 591                                                  srb->datalen);
 592                         debug("CBI attempted to transfer data," \
 593                               " result is %d status %lX, len %d\n",
 594                               result, us->pusb_dev->status,
 595                                 us->pusb_dev->act_len);
 596                         if (!(us->pusb_dev->status & USB_ST_NAK_REC))
 597                                 break;
 598                 } /* if (srb->datalen) */
 599                 else
 600                         break;
 601         }
 602         /* return result */
 603
 604         return result;
 605 }
 606
 607
 608 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 609 {
 610         int timeout;
 611
 612         us->ip_wanted = 1;
 613         submit_int_msg(us->pusb_dev, us->irqpipe,
 614                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 615         timeout = 1000;
 616         while (timeout--) {
 617                 if ((volatile int *) us->ip_wanted == NULL)
 618                         break;
 619                 mdelay(10);
 620         }
 621         if (us->ip_wanted) {
 622                 printf("        Did not get interrupt on CBI\n");
 623                 us->ip_wanted = 0;
 624                 return USB_STOR_TRANSPORT_ERROR;
 625         }
 626         debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
 627               us->ip_data, us->pusb_dev->irq_act_len,
 628               us->pusb_dev->irq_status);
 629         /* UFI gives us ASC and ASCQ, like a request sense */
 630         if (us->subclass == US_SC_UFI) {
 631                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
 632                     srb->cmd[0] == SCSI_INQUIRY)
 633                         return USB_STOR_TRANSPORT_GOOD; /* Good */
 634                 else if (us->ip_data)
 635                         return USB_STOR_TRANSPORT_FAILED;
 636                 else
 637                         return USB_STOR_TRANSPORT_GOOD;
 638         }
 639         /* otherwise, we interpret the data normally */
 640         switch (us->ip_data) {
 641         case 0x0001:
 642                 return USB_STOR_TRANSPORT_GOOD;
 643         case 0x0002:
 644                 return USB_STOR_TRANSPORT_FAILED;
 645         default:
 646                 return USB_STOR_TRANSPORT_ERROR;
 647         }                       /* switch */
 648         return USB_STOR_TRANSPORT_ERROR;
 649 }
 650
 651 #define USB_TRANSPORT_UNKNOWN_RETRY 5
 652 #define USB_TRANSPORT_NOT_READY_RETRY 10
 653
 654 /* clear a stall on an endpoint - special for BBB devices */
 655 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 656 {
 657         int result;
 658
 659         /* ENDPOINT_HALT = 0, so set value to 0 */
 660         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 661                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
 662                                 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
 663         return result;
 664 }
 665
 666 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 667 {
 668         int result, retry;
 669         int dir_in;
 670         int actlen, data_actlen;
 671         unsigned int pipe, pipein, pipeout;
 672         ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1);
 673 #ifdef BBB_XPORT_TRACE
 674         unsigned char *ptr;
 675         int index;
 676 #endif
 677
 678         dir_in = US_DIRECTION(srb->cmd[0]);
 679
 680         /* COMMAND phase */
 681         debug("COMMAND phase\n");
 682         result = usb_stor_BBB_comdat(srb, us);
 683         if (result < 0) {
 684                 debug("failed to send CBW status %ld\n",
 685                       us->pusb_dev->status);
 686                 usb_stor_BBB_reset(us);
 687                 return USB_STOR_TRANSPORT_FAILED;
 688         }
 689         if (!(us->flags & USB_READY))
 690                 mdelay(5);
 691         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
 692         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
 693         /* DATA phase + error handling */
 694         data_actlen = 0;
 695         /* no data, go immediately to the STATUS phase */
 696         if (srb->datalen == 0)
 697                 goto st;
 698         debug("DATA phase\n");
 699         if (dir_in)
 700                 pipe = pipein;
 701         else
 702                 pipe = pipeout;
 703         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
 704                               &data_actlen, USB_CNTL_TIMEOUT * 5);
 705         /* special handling of STALL in DATA phase */
 706         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 707                 debug("DATA:stall\n");
 708                 /* clear the STALL on the endpoint */
 709                 result = usb_stor_BBB_clear_endpt_stall(us,
 710                                         dir_in ? us->ep_in : us->ep_out);
 711                 if (result >= 0)
 712                         /* continue on to STATUS phase */
 713                         goto st;
 714         }
 715         if (result < 0) {
 716                 debug("usb_bulk_msg error status %ld\n",
 717                       us->pusb_dev->status);
 718                 usb_stor_BBB_reset(us);
 719                 return USB_STOR_TRANSPORT_FAILED;
 720         }
 721 #ifdef BBB_XPORT_TRACE
 722         for (index = 0; index < data_actlen; index++)
 723                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
 724         printf("\n");
 725 #endif
 726         /* STATUS phase + error handling */
 727 st:
 728         retry = 0;
 729 again:
 730         debug("STATUS phase\n");
 731         result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
 732                                 &actlen, USB_CNTL_TIMEOUT*5);
 733
 734         /* special handling of STALL in STATUS phase */
 735         if ((result < 0) && (retry < 1) &&
 736             (us->pusb_dev->status & USB_ST_STALLED)) {
 737                 debug("STATUS:stall\n");
 738                 /* clear the STALL on the endpoint */
 739                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
 740                 if (result >= 0 && (retry++ < 1))
 741                         /* do a retry */
 742                         goto again;
 743         }
 744         if (result < 0) {
 745                 debug("usb_bulk_msg error status %ld\n",
 746                       us->pusb_dev->status);
 747                 usb_stor_BBB_reset(us);
 748                 return USB_STOR_TRANSPORT_FAILED;
 749         }
 750 #ifdef BBB_XPORT_TRACE
 751         ptr = (unsigned char *)csw;
 752         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
 753                 printf("ptr[%d] %#x ", index, ptr[index]);
 754         printf("\n");
 755 #endif
 756         /* misuse pipe to get the residue */
 757         pipe = le32_to_cpu(csw->dCSWDataResidue);
 758         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
 759                 pipe = srb->datalen - data_actlen;
 760         if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
 761                 debug("!CSWSIGNATURE\n");
 762                 usb_stor_BBB_reset(us);
 763                 return USB_STOR_TRANSPORT_FAILED;
 764         } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
 765                 debug("!Tag\n");
 766                 usb_stor_BBB_reset(us);
 767                 return USB_STOR_TRANSPORT_FAILED;
 768         } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
 769                 debug(">PHASE\n");
 770                 usb_stor_BBB_reset(us);
 771                 return USB_STOR_TRANSPORT_FAILED;
 772         } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
 773                 debug("=PHASE\n");
 774                 usb_stor_BBB_reset(us);
 775                 return USB_STOR_TRANSPORT_FAILED;
 776         } else if (data_actlen > srb->datalen) {
 777                 debug("transferred %dB instead of %ldB\n",
 778                       data_actlen, srb->datalen);
 779                 return USB_STOR_TRANSPORT_FAILED;
 780         } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
 781                 debug("FAILED\n");
 782                 return USB_STOR_TRANSPORT_FAILED;
 783         }
 784
 785         return result;
 786 }
 787
 788 static int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 789 {
 790         int result, status;
 791         ccb *psrb;
 792         ccb reqsrb;
 793         int retry, notready;
 794
 795         psrb = &reqsrb;
 796         status = USB_STOR_TRANSPORT_GOOD;
 797         retry = 0;
 798         notready = 0;
 799         /* issue the command */
 800 do_retry:
 801         result = usb_stor_CB_comdat(srb, us);
 802         debug("command / Data returned %d, status %lX\n",
 803               result, us->pusb_dev->status);
 804         /* if this is an CBI Protocol, get IRQ */
 805         if (us->protocol == US_PR_CBI) {
 806                 status = usb_stor_CBI_get_status(srb, us);
 807                 /* if the status is error, report it */
 808                 if (status == USB_STOR_TRANSPORT_ERROR) {
 809                         debug(" USB CBI Command Error\n");
 810                         return status;
 811                 }
 812                 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
 813                 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
 814                 if (!us->ip_data) {
 815                         /* if the status is good, report it */
 816                         if (status == USB_STOR_TRANSPORT_GOOD) {
 817                                 debug(" USB CBI Command Good\n");
 818                                 return status;
 819                         }
 820                 }
 821         }
 822         /* do we have to issue an auto request? */
 823         /* HERE we have to check the result */
 824         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 825                 debug("ERROR %lX\n", us->pusb_dev->status);
 826                 us->transport_reset(us);
 827                 return USB_STOR_TRANSPORT_ERROR;
 828         }
 829         if ((us->protocol == US_PR_CBI) &&
 830             ((srb->cmd[0] == SCSI_REQ_SENSE) ||
 831             (srb->cmd[0] == SCSI_INQUIRY))) {
 832                 /* do not issue an autorequest after request sense */
 833                 debug("No auto request and good\n");
 834                 return USB_STOR_TRANSPORT_GOOD;
 835         }
 836         /* issue an request_sense */
 837         memset(&psrb->cmd[0], 0, 12);
 838         psrb->cmd[0] = SCSI_REQ_SENSE;
 839         psrb->cmd[1] = srb->lun << 5;
 840         psrb->cmd[4] = 18;
 841         psrb->datalen = 18;
 842         psrb->pdata = &srb->sense_buf[0];
 843         psrb->cmdlen = 12;
 844         /* issue the command */
 845         result = usb_stor_CB_comdat(psrb, us);
 846         debug("auto request returned %d\n", result);
 847         /* if this is an CBI Protocol, get IRQ */
 848         if (us->protocol == US_PR_CBI)
 849                 status = usb_stor_CBI_get_status(psrb, us);
 850
 851         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
 852                 debug(" AUTO REQUEST ERROR %ld\n",
 853                       us->pusb_dev->status);
 854                 return USB_STOR_TRANSPORT_ERROR;
 855         }
 856         debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
 857               srb->sense_buf[0], srb->sense_buf[2],
 858               srb->sense_buf[12], srb->sense_buf[13]);
 859         /* Check the auto request result */
 860         if ((srb->sense_buf[2] == 0) &&
 861             (srb->sense_buf[12] == 0) &&
 862             (srb->sense_buf[13] == 0)) {
 863                 /* ok, no sense */
 864                 return USB_STOR_TRANSPORT_GOOD;
 865         }
 866
 867         /* Check the auto request result */
 868         switch (srb->sense_buf[2]) {
 869         case 0x01:
 870                 /* Recovered Error */
 871                 return USB_STOR_TRANSPORT_GOOD;
 872                 break;
 873         case 0x02:
 874                 /* Not Ready */
 875                 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
 876                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 877                                " 0x%02X (NOT READY)\n", srb->cmd[0],
 878                                 srb->sense_buf[0], srb->sense_buf[2],
 879                                 srb->sense_buf[12], srb->sense_buf[13]);
 880                         return USB_STOR_TRANSPORT_FAILED;
 881                 } else {
 882                         mdelay(100);
 883                         goto do_retry;
 884                 }
 885                 break;
 886         default:
 887                 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
 888                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
 889                                " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
 890                                 srb->sense_buf[2], srb->sense_buf[12],
 891                                 srb->sense_buf[13]);
 892                         return USB_STOR_TRANSPORT_FAILED;
 893                 } else
 894                         goto do_retry;
 895                 break;
 896         }
 897         return USB_STOR_TRANSPORT_FAILED;
 898 }
 899
 900
 901 static int usb_inquiry(ccb *srb, struct us_data *ss)
 902 {
 903         int retry, i;
 904         retry = 5;
 905         do {
 906                 memset(&srb->cmd[0], 0, 12);
 907                 srb->cmd[0] = SCSI_INQUIRY;
 908                 srb->cmd[1] = srb->lun << 5;
 909                 srb->cmd[4] = 36;
 910                 srb->datalen = 36;
 911                 srb->cmdlen = 12;
 912                 i = ss->transport(srb, ss);
 913                 debug("inquiry returns %d\n", i);
 914                 if (i == 0)
 915                         break;
 916         } while (--retry);
 917
 918         if (!retry) {
 919                 printf("error in inquiry\n");
 920                 return -1;
 921         }
 922         return 0;
 923 }
 924
 925 static int usb_request_sense(ccb *srb, struct us_data *ss)
 926 {
 927         char *ptr;
 928
 929         ptr = (char *)srb->pdata;
 930         memset(&srb->cmd[0], 0, 12);
 931         srb->cmd[0] = SCSI_REQ_SENSE;
 932         srb->cmd[1] = srb->lun << 5;
 933         srb->cmd[4] = 18;
 934         srb->datalen = 18;
 935         srb->pdata = &srb->sense_buf[0];
 936         srb->cmdlen = 12;
 937         ss->transport(srb, ss);
 938         debug("Request Sense returned %02X %02X %02X\n",
 939               srb->sense_buf[2], srb->sense_buf[12],
 940               srb->sense_buf[13]);
 941         srb->pdata = (uchar *)ptr;
 942         return 0;
 943 }
 944
 945 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
 946 {
 947         int retries = 10;
 948
 949         do {
 950                 memset(&srb->cmd[0], 0, 12);
 951                 srb->cmd[0] = SCSI_TST_U_RDY;
 952                 srb->cmd[1] = srb->lun << 5;
 953                 srb->datalen = 0;
 954                 srb->cmdlen = 12;
 955                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) {
 956                         ss->flags |= USB_READY;
 957                         return 0;
 958                 }
 959                 usb_request_sense(srb, ss);
 960                 /*
 961                  * Check the Key Code Qualifier, if it matches
 962                  * "Not Ready - medium not present"
 963                  * (the sense Key equals 0x2 and the ASC is 0x3a)
 964                  * return immediately as the medium being absent won't change
 965                  * unless there is a user action.
 966                  */
 967                 if ((srb->sense_buf[2] == 0x02) &&
 968                     (srb->sense_buf[12] == 0x3a))
 969                         return -1;
 970                 mdelay(100);
 971         } while (retries--);
 972
 973         return -1;
 974 }
 975
 976 static int usb_read_capacity(ccb *srb, struct us_data *ss)
 977 {
 978         int retry;
 979         /* XXX retries */
 980         retry = 3;
 981         do {
 982                 memset(&srb->cmd[0], 0, 12);
 983                 srb->cmd[0] = SCSI_RD_CAPAC;
 984                 srb->cmd[1] = srb->lun << 5;
 985                 srb->datalen = 8;
 986                 srb->cmdlen = 12;
 987                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
 988                         return 0;
 989         } while (retry--);
 990
 991         return -1;
 992 }
 993
 994 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
 995                        unsigned short blocks)
 996 {
 997         memset(&srb->cmd[0], 0, 12);
 998         srb->cmd[0] = SCSI_READ10;
 999         srb->cmd[1] = srb->lun << 5;
1000         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1001         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1002         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1003         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1004         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1005         srb->cmd[8] = (unsigned char) blocks & 0xff;
1006         srb->cmdlen = 12;
1007         debug("read10: start %lx blocks %x\n", start, blocks);
1008         return ss->transport(srb, ss);
1009 }
1010
1011 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
1012                         unsigned short blocks)
1013 {
1014         memset(&srb->cmd[0], 0, 12);
1015         srb->cmd[0] = SCSI_WRITE10;
1016         srb->cmd[1] = srb->lun << 5;
1017         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1018         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1019         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1020         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1021         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1022         srb->cmd[8] = (unsigned char) blocks & 0xff;
1023         srb->cmdlen = 12;
1024         debug("write10: start %lx blocks %x\n", start, blocks);
1025         return ss->transport(srb, ss);
1026 }
1027
1028
1029 #ifdef CONFIG_USB_BIN_FIXUP
1030 /*
1031  * Some USB storage devices queried for SCSI identification data respond with
1032  * binary strings, which if output to the console freeze the terminal. The
1033  * workaround is to modify the vendor and product strings read from such
1034  * device with proper values (as reported by 'usb info').
1035  *
1036  * Vendor and product length limits are taken from the definition of
1037  * block_dev_desc_t in include/part.h.
1038  */
1039 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1040                                 unsigned char vendor[],
1041                                 unsigned char product[]) {
1042         const unsigned char max_vendor_len = 40;
1043         const unsigned char max_product_len = 20;
1044         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1045                 strncpy((char *)vendor, "SMSC", max_vendor_len);
1046                 strncpy((char *)product, "Flash Media Cntrller",
1047                         max_product_len);
1048         }
1049 }
1050 #endif /* CONFIG_USB_BIN_FIXUP */
1051
1052 unsigned long usb_stor_read(int device, lbaint_t blknr,
1053                             lbaint_t blkcnt, void *buffer)
1054 {
1055         lbaint_t start, blks;
1056         uintptr_t buf_addr;
1057         unsigned short smallblks;
1058         struct usb_device *dev;
1059         struct us_data *ss;
1060         int retry, i;
1061         ccb *srb = &usb_ccb;
1062
1063         if (blkcnt == 0)
1064                 return 0;
1065
1066         device &= 0xff;
1067         /* Setup  device */
1068         debug("\nusb_read: dev %d \n", device);
1069         dev = NULL;
1070         for (i = 0; i < USB_MAX_DEVICE; i++) {
1071                 dev = usb_get_dev_index(i);
1072                 if (dev == NULL)
1073                         return 0;
1074                 if (dev->devnum == usb_dev_desc[device].target)
1075                         break;
1076         }
1077         ss = (struct us_data *)dev->privptr;
1078
1079         usb_disable_asynch(1); /* asynch transfer not allowed */
1080         srb->lun = usb_dev_desc[device].lun;
1081         buf_addr = (unsigned long)buffer;
1082         start = blknr;
1083         blks = blkcnt;
1084
1085         debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF
1086               " buffer %" PRIxPTR "\n", device, start, blks, buf_addr);
1087
1088         do {
1089                 /* XXX need some comment here */
1090                 retry = 2;
1091                 srb->pdata = (unsigned char *)buf_addr;
1092                 if (blks > USB_MAX_XFER_BLK)
1093                         smallblks = USB_MAX_XFER_BLK;
1094                 else
1095                         smallblks = (unsigned short) blks;
1096 retry_it:
1097                 if (smallblks == USB_MAX_XFER_BLK)
1098                         usb_show_progress();
1099                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1100                 srb->pdata = (unsigned char *)buf_addr;
1101                 if (usb_read_10(srb, ss, start, smallblks)) {
1102                         debug("Read ERROR\n");
1103                         usb_request_sense(srb, ss);
1104                         if (retry--)
1105                                 goto retry_it;
1106                         blkcnt -= blks;
1107                         break;
1108                 }
1109                 start += smallblks;
1110                 blks -= smallblks;
1111                 buf_addr += srb->datalen;
1112         } while (blks != 0);
1113         ss->flags &= ~USB_READY;
1114
1115         debug("usb_read: end startblk " LBAF
1116               ", blccnt %x buffer %" PRIxPTR "\n",
1117               start, smallblks, buf_addr);
1118
1119         usb_disable_asynch(0); /* asynch transfer allowed */
1120         if (blkcnt >= USB_MAX_XFER_BLK)
1121                 debug("\n");
1122         return blkcnt;
1123 }
1124
1125 unsigned long usb_stor_write(int device, lbaint_t blknr,
1126                                 lbaint_t blkcnt, const void *buffer)
1127 {
1128         lbaint_t start, blks;
1129         uintptr_t buf_addr;
1130         unsigned short smallblks;
1131         struct usb_device *dev;
1132         struct us_data *ss;
1133         int retry, i;
1134         ccb *srb = &usb_ccb;
1135
1136         if (blkcnt == 0)
1137                 return 0;
1138
1139         device &= 0xff;
1140         /* Setup  device */
1141         debug("\nusb_write: dev %d \n", device);
1142         dev = NULL;
1143         for (i = 0; i < USB_MAX_DEVICE; i++) {
1144                 dev = usb_get_dev_index(i);
1145                 if (dev == NULL)
1146                         return 0;
1147                 if (dev->devnum == usb_dev_desc[device].target)
1148                         break;
1149         }
1150         ss = (struct us_data *)dev->privptr;
1151
1152         usb_disable_asynch(1); /* asynch transfer not allowed */
1153
1154         srb->lun = usb_dev_desc[device].lun;
1155         buf_addr = (unsigned long)buffer;
1156         start = blknr;
1157         blks = blkcnt;
1158
1159         debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF
1160               " buffer %" PRIxPTR "\n", device, start, blks, buf_addr);
1161
1162         do {
1163                 /* If write fails retry for max retry count else
1164                  * return with number of blocks written successfully.
1165                  */
1166                 retry = 2;
1167                 srb->pdata = (unsigned char *)buf_addr;
1168                 if (blks > USB_MAX_XFER_BLK)
1169                         smallblks = USB_MAX_XFER_BLK;
1170                 else
1171                         smallblks = (unsigned short) blks;
1172 retry_it:
1173                 if (smallblks == USB_MAX_XFER_BLK)
1174                         usb_show_progress();
1175                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1176                 srb->pdata = (unsigned char *)buf_addr;
1177                 if (usb_write_10(srb, ss, start, smallblks)) {
1178                         debug("Write ERROR\n");
1179                         usb_request_sense(srb, ss);
1180                         if (retry--)
1181                                 goto retry_it;
1182                         blkcnt -= blks;
1183                         break;
1184                 }
1185                 start += smallblks;
1186                 blks -= smallblks;
1187                 buf_addr += srb->datalen;
1188         } while (blks != 0);
1189         ss->flags &= ~USB_READY;
1190
1191         debug("usb_write: end startblk " LBAF ", blccnt %x buffer %"
1192               PRIxPTR "\n", start, smallblks, buf_addr);
1193
1194         usb_disable_asynch(0); /* asynch transfer allowed */
1195         if (blkcnt >= USB_MAX_XFER_BLK)
1196                 debug("\n");
1197         return blkcnt;
1198
1199 }
1200
1201 /* Probe to see if a new device is actually a Storage device */
1202 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1203                       struct us_data *ss)
1204 {
1205         struct usb_interface *iface;
1206         int i;
1207         struct usb_endpoint_descriptor *ep_desc;
1208         unsigned int flags = 0;
1209
1210         int protocol = 0;
1211         int subclass = 0;
1212
1213         /* let's examine the device now */
1214         iface = &dev->config.if_desc[ifnum];
1215
1216 #if 0
1217         /* this is the place to patch some storage devices */
1218         debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1219                         dev->descriptor.idProduct);
1220
1221         if ((dev->descriptor.idVendor) == 0x066b &&
1222             (dev->descriptor.idProduct) == 0x0103) {
1223                 debug("patched for E-USB\n");
1224                 protocol = US_PR_CB;
1225                 subclass = US_SC_UFI;       /* an assumption */
1226         }
1227 #endif
1228
1229         if (dev->descriptor.bDeviceClass != 0 ||
1230                         iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1231                         iface->desc.bInterfaceSubClass < US_SC_MIN ||
1232                         iface->desc.bInterfaceSubClass > US_SC_MAX) {
1233                 /* if it's not a mass storage, we go no further */
1234                 return 0;
1235         }
1236
1237         memset(ss, 0, sizeof(struct us_data));
1238
1239         /* At this point, we know we've got a live one */
1240         debug("\n\nUSB Mass Storage device detected\n");
1241
1242         /* Initialize the us_data structure with some useful info */
1243         ss->flags = flags;
1244         ss->ifnum = ifnum;
1245         ss->pusb_dev = dev;
1246         ss->attention_done = 0;
1247
1248         /* If the device has subclass and protocol, then use that.  Otherwise,
1249          * take data from the specific interface.
1250          */
1251         if (subclass) {
1252                 ss->subclass = subclass;
1253                 ss->protocol = protocol;
1254         } else {
1255                 ss->subclass = iface->desc.bInterfaceSubClass;
1256                 ss->protocol = iface->desc.bInterfaceProtocol;
1257         }
1258
1259         /* set the handler pointers based on the protocol */
1260         debug("Transport: ");
1261         switch (ss->protocol) {
1262         case US_PR_CB:
1263                 debug("Control/Bulk\n");
1264                 ss->transport = usb_stor_CB_transport;
1265                 ss->transport_reset = usb_stor_CB_reset;
1266                 break;
1267
1268         case US_PR_CBI:
1269                 debug("Control/Bulk/Interrupt\n");
1270                 ss->transport = usb_stor_CB_transport;
1271                 ss->transport_reset = usb_stor_CB_reset;
1272                 break;
1273         case US_PR_BULK:
1274                 debug("Bulk/Bulk/Bulk\n");
1275                 ss->transport = usb_stor_BBB_transport;
1276                 ss->transport_reset = usb_stor_BBB_reset;
1277                 break;
1278         default:
1279                 printf("USB Storage Transport unknown / not yet implemented\n");
1280                 return 0;
1281                 break;
1282         }
1283
1284         /*
1285          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1286          * An optional interrupt is OK (necessary for CBI protocol).
1287          * We will ignore any others.
1288          */
1289         for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1290                 ep_desc = &iface->ep_desc[i];
1291                 /* is it an BULK endpoint? */
1292                 if ((ep_desc->bmAttributes &
1293                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1294                         if (ep_desc->bEndpointAddress & USB_DIR_IN)
1295                                 ss->ep_in = ep_desc->bEndpointAddress &
1296                                                 USB_ENDPOINT_NUMBER_MASK;
1297                         else
1298                                 ss->ep_out =
1299                                         ep_desc->bEndpointAddress &
1300                                         USB_ENDPOINT_NUMBER_MASK;
1301                 }
1302
1303                 /* is it an interrupt endpoint? */
1304                 if ((ep_desc->bmAttributes &
1305                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1306                         ss->ep_int = ep_desc->bEndpointAddress &
1307                                                 USB_ENDPOINT_NUMBER_MASK;
1308                         ss->irqinterval = ep_desc->bInterval;
1309                 }
1310         }
1311         debug("Endpoints In %d Out %d Int %d\n",
1312               ss->ep_in, ss->ep_out, ss->ep_int);
1313
1314         /* Do some basic sanity checks, and bail if we find a problem */
1315         if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1316             !ss->ep_in || !ss->ep_out ||
1317             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1318                 debug("Problems with device\n");
1319                 return 0;
1320         }
1321         /* set class specific stuff */
1322         /* We only handle certain protocols.  Currently, these are
1323          * the only ones.
1324          * The SFF8070 accepts the requests used in u-boot
1325          */
1326         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1327             ss->subclass != US_SC_8070) {
1328                 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1329                 return 0;
1330         }
1331         if (ss->ep_int) {
1332                 /* we had found an interrupt endpoint, prepare irq pipe
1333                  * set up the IRQ pipe and handler
1334                  */
1335                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1336                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1337                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1338                 dev->irq_handle = usb_stor_irq;
1339         }
1340         dev->privptr = (void *)ss;
1341         return 1;
1342 }
1343
1344 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1345                       block_dev_desc_t *dev_desc)
1346 {
1347         unsigned char perq, modi;
1348         ALLOC_CACHE_ALIGN_BUFFER(unsigned long, cap, 2);
1349         ALLOC_CACHE_ALIGN_BUFFER(unsigned char, usb_stor_buf, 36);
1350         unsigned long *capacity, *blksz;
1351         ccb *pccb = &usb_ccb;
1352
1353         pccb->pdata = usb_stor_buf;
1354
1355         dev_desc->target = dev->devnum;
1356         pccb->lun = dev_desc->lun;
1357         debug(" address %d\n", dev_desc->target);
1358
1359         if (usb_inquiry(pccb, ss))
1360                 return -1;
1361
1362         perq = usb_stor_buf[0];
1363         modi = usb_stor_buf[1];
1364
1365         /*
1366          * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1367          * they would not respond to test_unit_ready .
1368          */
1369         if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
1370                 return 0;
1371         }
1372         if ((modi&0x80) == 0x80) {
1373                 /* drive is removable */
1374                 dev_desc->removable = 1;
1375         }
1376         memcpy(&dev_desc->vendor[0], (const void *) &usb_stor_buf[8], 8);
1377         memcpy(&dev_desc->product[0], (const void *) &usb_stor_buf[16], 16);
1378         memcpy(&dev_desc->revision[0], (const void *) &usb_stor_buf[32], 4);
1379         dev_desc->vendor[8] = 0;
1380         dev_desc->product[16] = 0;
1381         dev_desc->revision[4] = 0;
1382 #ifdef CONFIG_USB_BIN_FIXUP
1383         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1384                       (uchar *)dev_desc->product);
1385 #endif /* CONFIG_USB_BIN_FIXUP */
1386         debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1387               usb_stor_buf[3]);
1388         if (usb_test_unit_ready(pccb, ss)) {
1389                 printf("Device NOT ready\n"
1390                        "   Request Sense returned %02X %02X %02X\n",
1391                        pccb->sense_buf[2], pccb->sense_buf[12],
1392                        pccb->sense_buf[13]);
1393                 if (dev_desc->removable == 1) {
1394                         dev_desc->type = perq;
1395                         return 1;
1396                 }
1397                 return 0;
1398         }
1399         pccb->pdata = (unsigned char *)&cap[0];
1400         memset(pccb->pdata, 0, 8);
1401         if (usb_read_capacity(pccb, ss) != 0) {
1402                 printf("READ_CAP ERROR\n");
1403                 cap[0] = 2880;
1404                 cap[1] = 0x200;
1405         }
1406         ss->flags &= ~USB_READY;
1407         debug("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0], cap[1]);
1408 #if 0
1409         if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1410                 cap[0] >>= 16;
1411 #endif
1412         cap[0] = cpu_to_be32(cap[0]);
1413         cap[1] = cpu_to_be32(cap[1]);
1414
1415         /* this assumes bigendian! */
1416         cap[0] += 1;
1417         capacity = &cap[0];
1418         blksz = &cap[1];
1419         debug("Capacity = 0x%lx, blocksz = 0x%lx\n", *capacity, *blksz);
1420         dev_desc->lba = *capacity;
1421         dev_desc->blksz = *blksz;
1422         dev_desc->log2blksz = LOG2(dev_desc->blksz);
1423         dev_desc->type = perq;
1424         debug(" address %d\n", dev_desc->target);
1425         debug("partype: %d\n", dev_desc->part_type);
1426
1427         init_part(dev_desc);
1428
1429         debug("partype: %d\n", dev_desc->part_type);
1430         return 1;
1431 }