1 /* 2 * Most of this source has been derived from the Linux USB 3 * project: 4 * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) 5 * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org) 6 * (c) 1999 Michael Gee (michael@linuxspecific.com) 7 * (c) 2000 Yggdrasil Computing, Inc. 8 * 9 * 10 * Adapted for U-Boot: 11 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland 12 * 13 * For BBB support (C) Copyright 2003 14 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de> 15 * 16 * BBB support based on /sys/dev/usb/umass.c from 17 * FreeBSD. 18 * 19 * See file CREDITS for list of people who contributed to this 20 * project. 21 * 22 * This program is free software; you can redistribute it and/or 23 * modify it under the terms of the GNU General Public License as 24 * published by the Free Software Foundation; either version 2 of 25 * the License, or (at your option) any later version. 26 * 27 * This program is distributed in the hope that it will be useful, 28 * but WITHOUT ANY WARRANTY; without even the implied warranty of 29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 30 * GNU General Public License for more details. 31 * 32 * You should have received a copy of the GNU General Public License 33 * along with this program; if not, write to the Free Software 34 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 35 * MA 02111-1307 USA 36 * 37 */ 38 39 /* Note: 40 * Currently only the CBI transport protocoll has been implemented, and it 41 * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB 42 * transport protocoll may work as well. 43 */ 44 /* 45 * New Note: 46 * Support for USB Mass Storage Devices (BBB) has been added. It has 47 * only been tested with USB memory sticks. 48 */ 49 50 51 #include <common.h> 52 #include <command.h> 53 #include <asm/byteorder.h> 54 #include <asm/processor.h> 55 56 #include <part.h> 57 #include <usb.h> 58 59 #undef BBB_COMDAT_TRACE 60 #undef BBB_XPORT_TRACE 61 62 #ifdef USB_STOR_DEBUG 63 #define USB_BLK_DEBUG 1 64 #else 65 #define USB_BLK_DEBUG 0 66 #endif 67 68 #define USB_STOR_PRINTF(fmt, args...) debug_cond(USB_BLK_DEBUG, fmt, ##args) 69 70 #include <scsi.h> 71 /* direction table -- this indicates the direction of the data 72 * transfer for each command code -- a 1 indicates input 73 */ 74 static const unsigned char us_direction[256/8] = { 75 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77, 76 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 77 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 78 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 79 }; 80 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1) 81 82 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN))); 83 84 /* 85 * CBI style 86 */ 87 88 #define US_CBI_ADSC 0 89 90 /* 91 * BULK only 92 */ 93 #define US_BBB_RESET 0xff 94 #define US_BBB_GET_MAX_LUN 0xfe 95 96 /* Command Block Wrapper */ 97 typedef struct { 98 __u32 dCBWSignature; 99 # define CBWSIGNATURE 0x43425355 100 __u32 dCBWTag; 101 __u32 dCBWDataTransferLength; 102 __u8 bCBWFlags; 103 # define CBWFLAGS_OUT 0x00 104 # define CBWFLAGS_IN 0x80 105 __u8 bCBWLUN; 106 __u8 bCDBLength; 107 # define CBWCDBLENGTH 16 108 __u8 CBWCDB[CBWCDBLENGTH]; 109 } umass_bbb_cbw_t; 110 #define UMASS_BBB_CBW_SIZE 31 111 static __u32 CBWTag; 112 113 /* Command Status Wrapper */ 114 typedef struct { 115 __u32 dCSWSignature; 116 # define CSWSIGNATURE 0x53425355 117 __u32 dCSWTag; 118 __u32 dCSWDataResidue; 119 __u8 bCSWStatus; 120 # define CSWSTATUS_GOOD 0x0 121 # define CSWSTATUS_FAILED 0x1 122 # define CSWSTATUS_PHASE 0x2 123 } umass_bbb_csw_t; 124 #define UMASS_BBB_CSW_SIZE 13 125 126 #define USB_MAX_STOR_DEV 5 127 static int usb_max_devs; /* number of highest available usb device */ 128 129 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV]; 130 131 struct us_data; 132 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data); 133 typedef int (*trans_reset)(struct us_data *data); 134 135 struct us_data { 136 struct usb_device *pusb_dev; /* this usb_device */ 137 138 unsigned int flags; /* from filter initially */ 139 unsigned char ifnum; /* interface number */ 140 unsigned char ep_in; /* in endpoint */ 141 unsigned char ep_out; /* out ....... */ 142 unsigned char ep_int; /* interrupt . */ 143 unsigned char subclass; /* as in overview */ 144 unsigned char protocol; /* .............. */ 145 unsigned char attention_done; /* force attn on first cmd */ 146 unsigned short ip_data; /* interrupt data */ 147 int action; /* what to do */ 148 int ip_wanted; /* needed */ 149 int *irq_handle; /* for USB int requests */ 150 unsigned int irqpipe; /* pipe for release_irq */ 151 unsigned char irqmaxp; /* max packed for irq Pipe */ 152 unsigned char irqinterval; /* Intervall for IRQ Pipe */ 153 ccb *srb; /* current srb */ 154 trans_reset transport_reset; /* reset routine */ 155 trans_cmnd transport; /* transport routine */ 156 }; 157 158 /* 159 * The U-Boot EHCI driver cannot handle more than 5 page aligned buffers 160 * of 4096 bytes in a transfer without running itself out of qt_buffers 161 */ 162 #define USB_MAX_XFER_BLK(start, blksz) (((4096 * 5) - (start % 4096)) / blksz) 163 164 static struct us_data usb_stor[USB_MAX_STOR_DEV]; 165 166 167 #define USB_STOR_TRANSPORT_GOOD 0 168 #define USB_STOR_TRANSPORT_FAILED -1 169 #define USB_STOR_TRANSPORT_ERROR -2 170 171 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, 172 block_dev_desc_t *dev_desc); 173 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 174 struct us_data *ss); 175 unsigned long usb_stor_read(int device, unsigned long blknr, 176 unsigned long blkcnt, void *buffer); 177 unsigned long usb_stor_write(int device, unsigned long blknr, 178 unsigned long blkcnt, const void *buffer); 179 struct usb_device * usb_get_dev_index(int index); 180 void uhci_show_temp_int_td(void); 181 182 #ifdef CONFIG_PARTITIONS 183 block_dev_desc_t *usb_stor_get_dev(int index) 184 { 185 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL; 186 } 187 #endif 188 189 void usb_show_progress(void) 190 { 191 debug("."); 192 } 193 194 /******************************************************************************* 195 * show info on storage devices; 'usb start/init' must be invoked earlier 196 * as we only retrieve structures populated during devices initialization 197 */ 198 int usb_stor_info(void) 199 { 200 int i; 201 202 if (usb_max_devs > 0) { 203 for (i = 0; i < usb_max_devs; i++) { 204 printf(" Device %d: ", i); 205 dev_print(&usb_dev_desc[i]); 206 } 207 return 0; 208 } 209 210 printf("No storage devices, perhaps not 'usb start'ed..?\n"); 211 return 1; 212 } 213 214 static unsigned int usb_get_max_lun(struct us_data *us) 215 { 216 int len; 217 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1); 218 len = usb_control_msg(us->pusb_dev, 219 usb_rcvctrlpipe(us->pusb_dev, 0), 220 US_BBB_GET_MAX_LUN, 221 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 222 0, us->ifnum, 223 result, sizeof(char), 224 USB_CNTL_TIMEOUT * 5); 225 USB_STOR_PRINTF("Get Max LUN -> len = %i, result = %i\n", 226 len, (int) *result); 227 return (len > 0) ? *result : 0; 228 } 229 230 /******************************************************************************* 231 * scan the usb and reports device info 232 * to the user if mode = 1 233 * returns current device or -1 if no 234 */ 235 int usb_stor_scan(int mode) 236 { 237 unsigned char i; 238 struct usb_device *dev; 239 240 if (mode == 1) 241 printf(" scanning bus for storage devices... "); 242 243 usb_disable_asynch(1); /* asynch transfer not allowed */ 244 245 for (i = 0; i < USB_MAX_STOR_DEV; i++) { 246 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t)); 247 usb_dev_desc[i].if_type = IF_TYPE_USB; 248 usb_dev_desc[i].dev = i; 249 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN; 250 usb_dev_desc[i].target = 0xff; 251 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN; 252 usb_dev_desc[i].block_read = usb_stor_read; 253 usb_dev_desc[i].block_write = usb_stor_write; 254 } 255 256 usb_max_devs = 0; 257 for (i = 0; i < USB_MAX_DEVICE; i++) { 258 dev = usb_get_dev_index(i); /* get device */ 259 USB_STOR_PRINTF("i=%d\n", i); 260 if (dev == NULL) 261 break; /* no more devices available */ 262 263 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) { 264 /* OK, it's a storage device. Iterate over its LUNs 265 * and populate `usb_dev_desc'. 266 */ 267 int lun, max_lun, start = usb_max_devs; 268 269 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 270 for (lun = 0; 271 lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; 272 lun++) { 273 usb_dev_desc[usb_max_devs].lun = lun; 274 if (usb_stor_get_info(dev, &usb_stor[start], 275 &usb_dev_desc[usb_max_devs]) == 1) { 276 usb_max_devs++; 277 } 278 } 279 } 280 /* if storage device */ 281 if (usb_max_devs == USB_MAX_STOR_DEV) { 282 printf("max USB Storage Device reached: %d stopping\n", 283 usb_max_devs); 284 break; 285 } 286 } /* for */ 287 288 usb_disable_asynch(0); /* asynch transfer allowed */ 289 printf("%d Storage Device(s) found\n", usb_max_devs); 290 if (usb_max_devs > 0) 291 return 0; 292 return -1; 293 } 294 295 static int usb_stor_irq(struct usb_device *dev) 296 { 297 struct us_data *us; 298 us = (struct us_data *)dev->privptr; 299 300 if (us->ip_wanted) 301 us->ip_wanted = 0; 302 return 0; 303 } 304 305 306 #ifdef USB_STOR_DEBUG 307 308 static void usb_show_srb(ccb *pccb) 309 { 310 int i; 311 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 312 for (i = 0; i < 12; i++) 313 printf("%02X ", pccb->cmd[i]); 314 printf("\n"); 315 } 316 317 static void display_int_status(unsigned long tmp) 318 { 319 printf("Status: %s %s %s %s %s %s %s\n", 320 (tmp & USB_ST_ACTIVE) ? "Active" : "", 321 (tmp & USB_ST_STALLED) ? "Stalled" : "", 322 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 323 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 324 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 325 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 326 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 327 } 328 #endif 329 /*********************************************************************** 330 * Data transfer routines 331 ***********************************************************************/ 332 333 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 334 { 335 int max_size; 336 int this_xfer; 337 int result; 338 int partial; 339 int maxtry; 340 int stat; 341 342 /* determine the maximum packet size for these transfers */ 343 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 344 345 /* while we have data left to transfer */ 346 while (length) { 347 348 /* calculate how long this will be -- maximum or a remainder */ 349 this_xfer = length > max_size ? max_size : length; 350 length -= this_xfer; 351 352 /* setup the retry counter */ 353 maxtry = 10; 354 355 /* set up the transfer loop */ 356 do { 357 /* transfer the data */ 358 USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n", 359 (unsigned int)buf, this_xfer, 11 - maxtry); 360 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 361 this_xfer, &partial, 362 USB_CNTL_TIMEOUT * 5); 363 USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n", 364 result, partial, this_xfer); 365 if (us->pusb_dev->status != 0) { 366 /* if we stall, we need to clear it before 367 * we go on 368 */ 369 #ifdef USB_STOR_DEBUG 370 display_int_status(us->pusb_dev->status); 371 #endif 372 if (us->pusb_dev->status & USB_ST_STALLED) { 373 USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe); 374 stat = us->pusb_dev->status; 375 usb_clear_halt(us->pusb_dev, pipe); 376 us->pusb_dev->status = stat; 377 if (this_xfer == partial) { 378 USB_STOR_PRINTF("bulk transferred with error %lX, but data ok\n", us->pusb_dev->status); 379 return 0; 380 } 381 else 382 return result; 383 } 384 if (us->pusb_dev->status & USB_ST_NAK_REC) { 385 USB_STOR_PRINTF("Device NAKed bulk_msg\n"); 386 return result; 387 } 388 USB_STOR_PRINTF("bulk transferred with error"); 389 if (this_xfer == partial) { 390 USB_STOR_PRINTF(" %ld, but data ok\n", 391 us->pusb_dev->status); 392 return 0; 393 } 394 /* if our try counter reaches 0, bail out */ 395 USB_STOR_PRINTF(" %ld, data %d\n", 396 us->pusb_dev->status, partial); 397 if (!maxtry--) 398 return result; 399 } 400 /* update to show what data was transferred */ 401 this_xfer -= partial; 402 buf += partial; 403 /* continue until this transfer is done */ 404 } while (this_xfer); 405 } 406 407 /* if we get here, we're done and successful */ 408 return 0; 409 } 410 411 static int usb_stor_BBB_reset(struct us_data *us) 412 { 413 int result; 414 unsigned int pipe; 415 416 /* 417 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 418 * 419 * For Reset Recovery the host shall issue in the following order: 420 * a) a Bulk-Only Mass Storage Reset 421 * b) a Clear Feature HALT to the Bulk-In endpoint 422 * c) a Clear Feature HALT to the Bulk-Out endpoint 423 * 424 * This is done in 3 steps. 425 * 426 * If the reset doesn't succeed, the device should be port reset. 427 * 428 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 429 */ 430 USB_STOR_PRINTF("BBB_reset\n"); 431 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 432 US_BBB_RESET, 433 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 434 0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5); 435 436 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 437 USB_STOR_PRINTF("RESET:stall\n"); 438 return -1; 439 } 440 441 /* long wait for reset */ 442 mdelay(150); 443 USB_STOR_PRINTF("BBB_reset result %d: status %lX reset\n", result, 444 us->pusb_dev->status); 445 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 446 result = usb_clear_halt(us->pusb_dev, pipe); 447 /* long wait for reset */ 448 mdelay(150); 449 USB_STOR_PRINTF("BBB_reset result %d: status %lX clearing IN endpoint\n", 450 result, us->pusb_dev->status); 451 /* long wait for reset */ 452 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 453 result = usb_clear_halt(us->pusb_dev, pipe); 454 mdelay(150); 455 USB_STOR_PRINTF("BBB_reset result %d: status %lX" 456 " clearing OUT endpoint\n", result, 457 us->pusb_dev->status); 458 USB_STOR_PRINTF("BBB_reset done\n"); 459 return 0; 460 } 461 462 /* FIXME: this reset function doesn't really reset the port, and it 463 * should. Actually it should probably do what it's doing here, and 464 * reset the port physically 465 */ 466 static int usb_stor_CB_reset(struct us_data *us) 467 { 468 unsigned char cmd[12]; 469 int result; 470 471 USB_STOR_PRINTF("CB_reset\n"); 472 memset(cmd, 0xff, sizeof(cmd)); 473 cmd[0] = SCSI_SEND_DIAG; 474 cmd[1] = 4; 475 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 476 US_CBI_ADSC, 477 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 478 0, us->ifnum, cmd, sizeof(cmd), 479 USB_CNTL_TIMEOUT * 5); 480 481 /* long wait for reset */ 482 mdelay(1500); 483 USB_STOR_PRINTF("CB_reset result %d: status %lX" 484 " clearing endpoint halt\n", result, 485 us->pusb_dev->status); 486 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in)); 487 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out)); 488 489 USB_STOR_PRINTF("CB_reset done\n"); 490 return 0; 491 } 492 493 /* 494 * Set up the command for a BBB device. Note that the actual SCSI 495 * command is copied into cbw.CBWCDB. 496 */ 497 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us) 498 { 499 int result; 500 int actlen; 501 int dir_in; 502 unsigned int pipe; 503 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_cbw_t, cbw, 1); 504 505 dir_in = US_DIRECTION(srb->cmd[0]); 506 507 #ifdef BBB_COMDAT_TRACE 508 printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n", 509 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, 510 srb->pdata); 511 if (srb->cmdlen) { 512 for (result = 0; result < srb->cmdlen; result++) 513 printf("cmd[%d] %#x ", result, srb->cmd[result]); 514 printf("\n"); 515 } 516 #endif 517 /* sanity checks */ 518 if (!(srb->cmdlen <= CBWCDBLENGTH)) { 519 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n"); 520 return -1; 521 } 522 523 /* always OUT to the ep */ 524 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 525 526 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE); 527 cbw->dCBWTag = cpu_to_le32(CBWTag++); 528 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen); 529 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT); 530 cbw->bCBWLUN = srb->lun; 531 cbw->bCDBLength = srb->cmdlen; 532 /* copy the command data into the CBW command data buffer */ 533 /* DST SRC LEN!!! */ 534 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen); 535 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE, 536 &actlen, USB_CNTL_TIMEOUT * 5); 537 if (result < 0) 538 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 539 return result; 540 } 541 542 /* FIXME: we also need a CBI_command which sets up the completion 543 * interrupt, and waits for it 544 */ 545 int usb_stor_CB_comdat(ccb *srb, struct us_data *us) 546 { 547 int result = 0; 548 int dir_in, retry; 549 unsigned int pipe; 550 unsigned long status; 551 552 retry = 5; 553 dir_in = US_DIRECTION(srb->cmd[0]); 554 555 if (dir_in) 556 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 557 else 558 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 559 560 while (retry--) { 561 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry); 562 #ifdef USB_STOR_DEBUG 563 usb_show_srb(srb); 564 #endif 565 /* let's send the command via the control pipe */ 566 result = usb_control_msg(us->pusb_dev, 567 usb_sndctrlpipe(us->pusb_dev , 0), 568 US_CBI_ADSC, 569 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 570 0, us->ifnum, 571 srb->cmd, srb->cmdlen, 572 USB_CNTL_TIMEOUT * 5); 573 USB_STOR_PRINTF("CB_transport: control msg returned %d," 574 " status %lX\n", result, us->pusb_dev->status); 575 /* check the return code for the command */ 576 if (result < 0) { 577 if (us->pusb_dev->status & USB_ST_STALLED) { 578 status = us->pusb_dev->status; 579 USB_STOR_PRINTF(" stall during command found," 580 " clear pipe\n"); 581 usb_clear_halt(us->pusb_dev, 582 usb_sndctrlpipe(us->pusb_dev, 0)); 583 us->pusb_dev->status = status; 584 } 585 USB_STOR_PRINTF(" error during command %02X" 586 " Stat = %lX\n", srb->cmd[0], 587 us->pusb_dev->status); 588 return result; 589 } 590 /* transfer the data payload for this command, if one exists*/ 591 592 USB_STOR_PRINTF("CB_transport: control msg returned %d," 593 " direction is %s to go 0x%lx\n", result, 594 dir_in ? "IN" : "OUT", srb->datalen); 595 if (srb->datalen) { 596 result = us_one_transfer(us, pipe, (char *)srb->pdata, 597 srb->datalen); 598 USB_STOR_PRINTF("CBI attempted to transfer data," 599 " result is %d status %lX, len %d\n", 600 result, us->pusb_dev->status, 601 us->pusb_dev->act_len); 602 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 603 break; 604 } /* if (srb->datalen) */ 605 else 606 break; 607 } 608 /* return result */ 609 610 return result; 611 } 612 613 614 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us) 615 { 616 int timeout; 617 618 us->ip_wanted = 1; 619 submit_int_msg(us->pusb_dev, us->irqpipe, 620 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 621 timeout = 1000; 622 while (timeout--) { 623 if ((volatile int *) us->ip_wanted == 0) 624 break; 625 mdelay(10); 626 } 627 if (us->ip_wanted) { 628 printf(" Did not get interrupt on CBI\n"); 629 us->ip_wanted = 0; 630 return USB_STOR_TRANSPORT_ERROR; 631 } 632 USB_STOR_PRINTF 633 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n", 634 us->ip_data, us->pusb_dev->irq_act_len, 635 us->pusb_dev->irq_status); 636 /* UFI gives us ASC and ASCQ, like a request sense */ 637 if (us->subclass == US_SC_UFI) { 638 if (srb->cmd[0] == SCSI_REQ_SENSE || 639 srb->cmd[0] == SCSI_INQUIRY) 640 return USB_STOR_TRANSPORT_GOOD; /* Good */ 641 else if (us->ip_data) 642 return USB_STOR_TRANSPORT_FAILED; 643 else 644 return USB_STOR_TRANSPORT_GOOD; 645 } 646 /* otherwise, we interpret the data normally */ 647 switch (us->ip_data) { 648 case 0x0001: 649 return USB_STOR_TRANSPORT_GOOD; 650 case 0x0002: 651 return USB_STOR_TRANSPORT_FAILED; 652 default: 653 return USB_STOR_TRANSPORT_ERROR; 654 } /* switch */ 655 return USB_STOR_TRANSPORT_ERROR; 656 } 657 658 #define USB_TRANSPORT_UNKNOWN_RETRY 5 659 #define USB_TRANSPORT_NOT_READY_RETRY 10 660 661 /* clear a stall on an endpoint - special for BBB devices */ 662 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 663 { 664 int result; 665 666 /* ENDPOINT_HALT = 0, so set value to 0 */ 667 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 668 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 669 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5); 670 return result; 671 } 672 673 int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 674 { 675 int result, retry; 676 int dir_in; 677 int actlen, data_actlen; 678 unsigned int pipe, pipein, pipeout; 679 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1); 680 #ifdef BBB_XPORT_TRACE 681 unsigned char *ptr; 682 int index; 683 #endif 684 685 dir_in = US_DIRECTION(srb->cmd[0]); 686 687 /* COMMAND phase */ 688 USB_STOR_PRINTF("COMMAND phase\n"); 689 result = usb_stor_BBB_comdat(srb, us); 690 if (result < 0) { 691 USB_STOR_PRINTF("failed to send CBW status %ld\n", 692 us->pusb_dev->status); 693 usb_stor_BBB_reset(us); 694 return USB_STOR_TRANSPORT_FAILED; 695 } 696 mdelay(5); 697 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 698 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 699 /* DATA phase + error handling */ 700 data_actlen = 0; 701 /* no data, go immediately to the STATUS phase */ 702 if (srb->datalen == 0) 703 goto st; 704 USB_STOR_PRINTF("DATA phase\n"); 705 if (dir_in) 706 pipe = pipein; 707 else 708 pipe = pipeout; 709 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 710 &data_actlen, USB_CNTL_TIMEOUT * 5); 711 /* special handling of STALL in DATA phase */ 712 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 713 USB_STOR_PRINTF("DATA:stall\n"); 714 /* clear the STALL on the endpoint */ 715 result = usb_stor_BBB_clear_endpt_stall(us, 716 dir_in ? us->ep_in : us->ep_out); 717 if (result >= 0) 718 /* continue on to STATUS phase */ 719 goto st; 720 } 721 if (result < 0) { 722 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n", 723 us->pusb_dev->status); 724 usb_stor_BBB_reset(us); 725 return USB_STOR_TRANSPORT_FAILED; 726 } 727 #ifdef BBB_XPORT_TRACE 728 for (index = 0; index < data_actlen; index++) 729 printf("pdata[%d] %#x ", index, srb->pdata[index]); 730 printf("\n"); 731 #endif 732 /* STATUS phase + error handling */ 733 st: 734 retry = 0; 735 again: 736 USB_STOR_PRINTF("STATUS phase\n"); 737 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 738 &actlen, USB_CNTL_TIMEOUT*5); 739 740 /* special handling of STALL in STATUS phase */ 741 if ((result < 0) && (retry < 1) && 742 (us->pusb_dev->status & USB_ST_STALLED)) { 743 USB_STOR_PRINTF("STATUS:stall\n"); 744 /* clear the STALL on the endpoint */ 745 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 746 if (result >= 0 && (retry++ < 1)) 747 /* do a retry */ 748 goto again; 749 } 750 if (result < 0) { 751 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n", 752 us->pusb_dev->status); 753 usb_stor_BBB_reset(us); 754 return USB_STOR_TRANSPORT_FAILED; 755 } 756 #ifdef BBB_XPORT_TRACE 757 ptr = (unsigned char *)csw; 758 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 759 printf("ptr[%d] %#x ", index, ptr[index]); 760 printf("\n"); 761 #endif 762 /* misuse pipe to get the residue */ 763 pipe = le32_to_cpu(csw->dCSWDataResidue); 764 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 765 pipe = srb->datalen - data_actlen; 766 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 767 USB_STOR_PRINTF("!CSWSIGNATURE\n"); 768 usb_stor_BBB_reset(us); 769 return USB_STOR_TRANSPORT_FAILED; 770 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 771 USB_STOR_PRINTF("!Tag\n"); 772 usb_stor_BBB_reset(us); 773 return USB_STOR_TRANSPORT_FAILED; 774 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 775 USB_STOR_PRINTF(">PHASE\n"); 776 usb_stor_BBB_reset(us); 777 return USB_STOR_TRANSPORT_FAILED; 778 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 779 USB_STOR_PRINTF("=PHASE\n"); 780 usb_stor_BBB_reset(us); 781 return USB_STOR_TRANSPORT_FAILED; 782 } else if (data_actlen > srb->datalen) { 783 USB_STOR_PRINTF("transferred %dB instead of %ldB\n", 784 data_actlen, srb->datalen); 785 return USB_STOR_TRANSPORT_FAILED; 786 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 787 USB_STOR_PRINTF("FAILED\n"); 788 return USB_STOR_TRANSPORT_FAILED; 789 } 790 791 return result; 792 } 793 794 int usb_stor_CB_transport(ccb *srb, struct us_data *us) 795 { 796 int result, status; 797 ccb *psrb; 798 ccb reqsrb; 799 int retry, notready; 800 801 psrb = &reqsrb; 802 status = USB_STOR_TRANSPORT_GOOD; 803 retry = 0; 804 notready = 0; 805 /* issue the command */ 806 do_retry: 807 result = usb_stor_CB_comdat(srb, us); 808 USB_STOR_PRINTF("command / Data returned %d, status %lX\n", 809 result, us->pusb_dev->status); 810 /* if this is an CBI Protocol, get IRQ */ 811 if (us->protocol == US_PR_CBI) { 812 status = usb_stor_CBI_get_status(srb, us); 813 /* if the status is error, report it */ 814 if (status == USB_STOR_TRANSPORT_ERROR) { 815 USB_STOR_PRINTF(" USB CBI Command Error\n"); 816 return status; 817 } 818 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 819 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 820 if (!us->ip_data) { 821 /* if the status is good, report it */ 822 if (status == USB_STOR_TRANSPORT_GOOD) { 823 USB_STOR_PRINTF(" USB CBI Command Good\n"); 824 return status; 825 } 826 } 827 } 828 /* do we have to issue an auto request? */ 829 /* HERE we have to check the result */ 830 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 831 USB_STOR_PRINTF("ERROR %lX\n", us->pusb_dev->status); 832 us->transport_reset(us); 833 return USB_STOR_TRANSPORT_ERROR; 834 } 835 if ((us->protocol == US_PR_CBI) && 836 ((srb->cmd[0] == SCSI_REQ_SENSE) || 837 (srb->cmd[0] == SCSI_INQUIRY))) { 838 /* do not issue an autorequest after request sense */ 839 USB_STOR_PRINTF("No auto request and good\n"); 840 return USB_STOR_TRANSPORT_GOOD; 841 } 842 /* issue an request_sense */ 843 memset(&psrb->cmd[0], 0, 12); 844 psrb->cmd[0] = SCSI_REQ_SENSE; 845 psrb->cmd[1] = srb->lun << 5; 846 psrb->cmd[4] = 18; 847 psrb->datalen = 18; 848 psrb->pdata = &srb->sense_buf[0]; 849 psrb->cmdlen = 12; 850 /* issue the command */ 851 result = usb_stor_CB_comdat(psrb, us); 852 USB_STOR_PRINTF("auto request returned %d\n", result); 853 /* if this is an CBI Protocol, get IRQ */ 854 if (us->protocol == US_PR_CBI) 855 status = usb_stor_CBI_get_status(psrb, us); 856 857 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 858 USB_STOR_PRINTF(" AUTO REQUEST ERROR %ld\n", 859 us->pusb_dev->status); 860 return USB_STOR_TRANSPORT_ERROR; 861 } 862 USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 863 srb->sense_buf[0], srb->sense_buf[2], 864 srb->sense_buf[12], srb->sense_buf[13]); 865 /* Check the auto request result */ 866 if ((srb->sense_buf[2] == 0) && 867 (srb->sense_buf[12] == 0) && 868 (srb->sense_buf[13] == 0)) { 869 /* ok, no sense */ 870 return USB_STOR_TRANSPORT_GOOD; 871 } 872 873 /* Check the auto request result */ 874 switch (srb->sense_buf[2]) { 875 case 0x01: 876 /* Recovered Error */ 877 return USB_STOR_TRANSPORT_GOOD; 878 break; 879 case 0x02: 880 /* Not Ready */ 881 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 882 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 883 " 0x%02X (NOT READY)\n", srb->cmd[0], 884 srb->sense_buf[0], srb->sense_buf[2], 885 srb->sense_buf[12], srb->sense_buf[13]); 886 return USB_STOR_TRANSPORT_FAILED; 887 } else { 888 mdelay(100); 889 goto do_retry; 890 } 891 break; 892 default: 893 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 894 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 895 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 896 srb->sense_buf[2], srb->sense_buf[12], 897 srb->sense_buf[13]); 898 return USB_STOR_TRANSPORT_FAILED; 899 } else 900 goto do_retry; 901 break; 902 } 903 return USB_STOR_TRANSPORT_FAILED; 904 } 905 906 907 static int usb_inquiry(ccb *srb, struct us_data *ss) 908 { 909 int retry, i; 910 retry = 5; 911 do { 912 memset(&srb->cmd[0], 0, 12); 913 srb->cmd[0] = SCSI_INQUIRY; 914 srb->cmd[1] = srb->lun << 5; 915 srb->cmd[4] = 36; 916 srb->datalen = 36; 917 srb->cmdlen = 12; 918 i = ss->transport(srb, ss); 919 USB_STOR_PRINTF("inquiry returns %d\n", i); 920 if (i == 0) 921 break; 922 } while (--retry); 923 924 if (!retry) { 925 printf("error in inquiry\n"); 926 return -1; 927 } 928 return 0; 929 } 930 931 static int usb_request_sense(ccb *srb, struct us_data *ss) 932 { 933 char *ptr; 934 935 ptr = (char *)srb->pdata; 936 memset(&srb->cmd[0], 0, 12); 937 srb->cmd[0] = SCSI_REQ_SENSE; 938 srb->cmd[1] = srb->lun << 5; 939 srb->cmd[4] = 18; 940 srb->datalen = 18; 941 srb->pdata = &srb->sense_buf[0]; 942 srb->cmdlen = 12; 943 ss->transport(srb, ss); 944 USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n", 945 srb->sense_buf[2], srb->sense_buf[12], 946 srb->sense_buf[13]); 947 srb->pdata = (uchar *)ptr; 948 return 0; 949 } 950 951 static int usb_test_unit_ready(ccb *srb, struct us_data *ss) 952 { 953 int retries = 10; 954 955 do { 956 memset(&srb->cmd[0], 0, 12); 957 srb->cmd[0] = SCSI_TST_U_RDY; 958 srb->cmd[1] = srb->lun << 5; 959 srb->datalen = 0; 960 srb->cmdlen = 12; 961 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 962 return 0; 963 usb_request_sense(srb, ss); 964 mdelay(100); 965 } while (retries--); 966 967 return -1; 968 } 969 970 static int usb_read_capacity(ccb *srb, struct us_data *ss) 971 { 972 int retry; 973 /* XXX retries */ 974 retry = 3; 975 do { 976 memset(&srb->cmd[0], 0, 12); 977 srb->cmd[0] = SCSI_RD_CAPAC; 978 srb->cmd[1] = srb->lun << 5; 979 srb->datalen = 8; 980 srb->cmdlen = 12; 981 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 982 return 0; 983 } while (retry--); 984 985 return -1; 986 } 987 988 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 989 unsigned short blocks) 990 { 991 memset(&srb->cmd[0], 0, 12); 992 srb->cmd[0] = SCSI_READ10; 993 srb->cmd[1] = srb->lun << 5; 994 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 995 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 996 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 997 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 998 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 999 srb->cmd[8] = (unsigned char) blocks & 0xff; 1000 srb->cmdlen = 12; 1001 USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks); 1002 return ss->transport(srb, ss); 1003 } 1004 1005 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 1006 unsigned short blocks) 1007 { 1008 memset(&srb->cmd[0], 0, 12); 1009 srb->cmd[0] = SCSI_WRITE10; 1010 srb->cmd[1] = srb->lun << 5; 1011 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1012 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1013 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1014 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1015 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1016 srb->cmd[8] = (unsigned char) blocks & 0xff; 1017 srb->cmdlen = 12; 1018 USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks); 1019 return ss->transport(srb, ss); 1020 } 1021 1022 1023 #ifdef CONFIG_USB_BIN_FIXUP 1024 /* 1025 * Some USB storage devices queried for SCSI identification data respond with 1026 * binary strings, which if output to the console freeze the terminal. The 1027 * workaround is to modify the vendor and product strings read from such 1028 * device with proper values (as reported by 'usb info'). 1029 * 1030 * Vendor and product length limits are taken from the definition of 1031 * block_dev_desc_t in include/part.h. 1032 */ 1033 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1034 unsigned char vendor[], 1035 unsigned char product[]) { 1036 const unsigned char max_vendor_len = 40; 1037 const unsigned char max_product_len = 20; 1038 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1039 strncpy((char *)vendor, "SMSC", max_vendor_len); 1040 strncpy((char *)product, "Flash Media Cntrller", 1041 max_product_len); 1042 } 1043 } 1044 #endif /* CONFIG_USB_BIN_FIXUP */ 1045 1046 unsigned long usb_stor_read(int device, unsigned long blknr, 1047 unsigned long blkcnt, void *buffer) 1048 { 1049 unsigned long start, blks, buf_addr, max_xfer_blk; 1050 unsigned short smallblks; 1051 struct usb_device *dev; 1052 struct us_data *ss; 1053 int retry, i; 1054 ccb *srb = &usb_ccb; 1055 1056 if (blkcnt == 0) 1057 return 0; 1058 1059 device &= 0xff; 1060 /* Setup device */ 1061 USB_STOR_PRINTF("\nusb_read: dev %d \n", device); 1062 dev = NULL; 1063 for (i = 0; i < USB_MAX_DEVICE; i++) { 1064 dev = usb_get_dev_index(i); 1065 if (dev == NULL) 1066 return 0; 1067 if (dev->devnum == usb_dev_desc[device].target) 1068 break; 1069 } 1070 ss = (struct us_data *)dev->privptr; 1071 1072 usb_disable_asynch(1); /* asynch transfer not allowed */ 1073 srb->lun = usb_dev_desc[device].lun; 1074 buf_addr = (unsigned long)buffer; 1075 start = blknr; 1076 blks = blkcnt; 1077 if (usb_test_unit_ready(srb, ss)) { 1078 printf("Device NOT ready\n Request Sense returned %02X %02X" 1079 " %02X\n", srb->sense_buf[2], srb->sense_buf[12], 1080 srb->sense_buf[13]); 1081 return 0; 1082 } 1083 1084 USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx" 1085 " buffer %lx\n", device, start, blks, buf_addr); 1086 1087 do { 1088 /* XXX need some comment here */ 1089 retry = 2; 1090 srb->pdata = (unsigned char *)buf_addr; 1091 max_xfer_blk = USB_MAX_XFER_BLK(buf_addr, 1092 usb_dev_desc[device].blksz); 1093 if (blks > max_xfer_blk) 1094 smallblks = (unsigned short) max_xfer_blk; 1095 else 1096 smallblks = (unsigned short) blks; 1097 retry_it: 1098 if (smallblks == max_xfer_blk) 1099 usb_show_progress(); 1100 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1101 srb->pdata = (unsigned char *)buf_addr; 1102 if (usb_read_10(srb, ss, start, smallblks)) { 1103 USB_STOR_PRINTF("Read ERROR\n"); 1104 usb_request_sense(srb, ss); 1105 if (retry--) 1106 goto retry_it; 1107 blkcnt -= blks; 1108 break; 1109 } 1110 start += smallblks; 1111 blks -= smallblks; 1112 buf_addr += srb->datalen; 1113 } while (blks != 0); 1114 1115 USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n", 1116 start, smallblks, buf_addr); 1117 1118 usb_disable_asynch(0); /* asynch transfer allowed */ 1119 if (blkcnt >= max_xfer_blk) 1120 debug("\n"); 1121 return blkcnt; 1122 } 1123 1124 unsigned long usb_stor_write(int device, unsigned long blknr, 1125 unsigned long blkcnt, const void *buffer) 1126 { 1127 unsigned long start, blks, buf_addr, max_xfer_blk; 1128 unsigned short smallblks; 1129 struct usb_device *dev; 1130 struct us_data *ss; 1131 int retry, i; 1132 ccb *srb = &usb_ccb; 1133 1134 if (blkcnt == 0) 1135 return 0; 1136 1137 device &= 0xff; 1138 /* Setup device */ 1139 USB_STOR_PRINTF("\nusb_write: dev %d \n", device); 1140 dev = NULL; 1141 for (i = 0; i < USB_MAX_DEVICE; i++) { 1142 dev = usb_get_dev_index(i); 1143 if (dev == NULL) 1144 return 0; 1145 if (dev->devnum == usb_dev_desc[device].target) 1146 break; 1147 } 1148 ss = (struct us_data *)dev->privptr; 1149 1150 usb_disable_asynch(1); /* asynch transfer not allowed */ 1151 1152 srb->lun = usb_dev_desc[device].lun; 1153 buf_addr = (unsigned long)buffer; 1154 start = blknr; 1155 blks = blkcnt; 1156 if (usb_test_unit_ready(srb, ss)) { 1157 printf("Device NOT ready\n Request Sense returned %02X %02X" 1158 " %02X\n", srb->sense_buf[2], srb->sense_buf[12], 1159 srb->sense_buf[13]); 1160 return 0; 1161 } 1162 1163 USB_STOR_PRINTF("\nusb_write: dev %d startblk %lx, blccnt %lx" 1164 " buffer %lx\n", device, start, blks, buf_addr); 1165 1166 do { 1167 /* If write fails retry for max retry count else 1168 * return with number of blocks written successfully. 1169 */ 1170 retry = 2; 1171 srb->pdata = (unsigned char *)buf_addr; 1172 max_xfer_blk = USB_MAX_XFER_BLK(buf_addr, 1173 usb_dev_desc[device].blksz); 1174 if (blks > max_xfer_blk) 1175 smallblks = (unsigned short) max_xfer_blk; 1176 else 1177 smallblks = (unsigned short) blks; 1178 retry_it: 1179 if (smallblks == max_xfer_blk) 1180 usb_show_progress(); 1181 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1182 srb->pdata = (unsigned char *)buf_addr; 1183 if (usb_write_10(srb, ss, start, smallblks)) { 1184 USB_STOR_PRINTF("Write ERROR\n"); 1185 usb_request_sense(srb, ss); 1186 if (retry--) 1187 goto retry_it; 1188 blkcnt -= blks; 1189 break; 1190 } 1191 start += smallblks; 1192 blks -= smallblks; 1193 buf_addr += srb->datalen; 1194 } while (blks != 0); 1195 1196 USB_STOR_PRINTF("usb_write: end startblk %lx, blccnt %x buffer %lx\n", 1197 start, smallblks, buf_addr); 1198 1199 usb_disable_asynch(0); /* asynch transfer allowed */ 1200 if (blkcnt >= max_xfer_blk) 1201 debug("\n"); 1202 return blkcnt; 1203 1204 } 1205 1206 /* Probe to see if a new device is actually a Storage device */ 1207 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1208 struct us_data *ss) 1209 { 1210 struct usb_interface *iface; 1211 int i; 1212 unsigned int flags = 0; 1213 1214 int protocol = 0; 1215 int subclass = 0; 1216 1217 /* let's examine the device now */ 1218 iface = &dev->config.if_desc[ifnum]; 1219 1220 #if 0 1221 /* this is the place to patch some storage devices */ 1222 USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor, 1223 dev->descriptor.idProduct); 1224 1225 if ((dev->descriptor.idVendor) == 0x066b && 1226 (dev->descriptor.idProduct) == 0x0103) { 1227 USB_STOR_PRINTF("patched for E-USB\n"); 1228 protocol = US_PR_CB; 1229 subclass = US_SC_UFI; /* an assumption */ 1230 } 1231 #endif 1232 1233 if (dev->descriptor.bDeviceClass != 0 || 1234 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1235 iface->desc.bInterfaceSubClass < US_SC_MIN || 1236 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1237 /* if it's not a mass storage, we go no further */ 1238 return 0; 1239 } 1240 1241 memset(ss, 0, sizeof(struct us_data)); 1242 1243 /* At this point, we know we've got a live one */ 1244 USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n"); 1245 1246 /* Initialize the us_data structure with some useful info */ 1247 ss->flags = flags; 1248 ss->ifnum = ifnum; 1249 ss->pusb_dev = dev; 1250 ss->attention_done = 0; 1251 1252 /* If the device has subclass and protocol, then use that. Otherwise, 1253 * take data from the specific interface. 1254 */ 1255 if (subclass) { 1256 ss->subclass = subclass; 1257 ss->protocol = protocol; 1258 } else { 1259 ss->subclass = iface->desc.bInterfaceSubClass; 1260 ss->protocol = iface->desc.bInterfaceProtocol; 1261 } 1262 1263 /* set the handler pointers based on the protocol */ 1264 USB_STOR_PRINTF("Transport: "); 1265 switch (ss->protocol) { 1266 case US_PR_CB: 1267 USB_STOR_PRINTF("Control/Bulk\n"); 1268 ss->transport = usb_stor_CB_transport; 1269 ss->transport_reset = usb_stor_CB_reset; 1270 break; 1271 1272 case US_PR_CBI: 1273 USB_STOR_PRINTF("Control/Bulk/Interrupt\n"); 1274 ss->transport = usb_stor_CB_transport; 1275 ss->transport_reset = usb_stor_CB_reset; 1276 break; 1277 case US_PR_BULK: 1278 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n"); 1279 ss->transport = usb_stor_BBB_transport; 1280 ss->transport_reset = usb_stor_BBB_reset; 1281 break; 1282 default: 1283 printf("USB Storage Transport unknown / not yet implemented\n"); 1284 return 0; 1285 break; 1286 } 1287 1288 /* 1289 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1290 * An optional interrupt is OK (necessary for CBI protocol). 1291 * We will ignore any others. 1292 */ 1293 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1294 /* is it an BULK endpoint? */ 1295 if ((iface->ep_desc[i].bmAttributes & 1296 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1297 if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN) 1298 ss->ep_in = iface->ep_desc[i].bEndpointAddress & 1299 USB_ENDPOINT_NUMBER_MASK; 1300 else 1301 ss->ep_out = 1302 iface->ep_desc[i].bEndpointAddress & 1303 USB_ENDPOINT_NUMBER_MASK; 1304 } 1305 1306 /* is it an interrupt endpoint? */ 1307 if ((iface->ep_desc[i].bmAttributes & 1308 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1309 ss->ep_int = iface->ep_desc[i].bEndpointAddress & 1310 USB_ENDPOINT_NUMBER_MASK; 1311 ss->irqinterval = iface->ep_desc[i].bInterval; 1312 } 1313 } 1314 USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n", 1315 ss->ep_in, ss->ep_out, ss->ep_int); 1316 1317 /* Do some basic sanity checks, and bail if we find a problem */ 1318 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1319 !ss->ep_in || !ss->ep_out || 1320 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1321 USB_STOR_PRINTF("Problems with device\n"); 1322 return 0; 1323 } 1324 /* set class specific stuff */ 1325 /* We only handle certain protocols. Currently, these are 1326 * the only ones. 1327 * The SFF8070 accepts the requests used in u-boot 1328 */ 1329 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1330 ss->subclass != US_SC_8070) { 1331 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1332 return 0; 1333 } 1334 if (ss->ep_int) { 1335 /* we had found an interrupt endpoint, prepare irq pipe 1336 * set up the IRQ pipe and handler 1337 */ 1338 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1339 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1340 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1341 dev->irq_handle = usb_stor_irq; 1342 } 1343 dev->privptr = (void *)ss; 1344 return 1; 1345 } 1346 1347 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1348 block_dev_desc_t *dev_desc) 1349 { 1350 unsigned char perq, modi; 1351 ALLOC_CACHE_ALIGN_BUFFER(unsigned long, cap, 2); 1352 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, usb_stor_buf, 36); 1353 unsigned long *capacity, *blksz; 1354 ccb *pccb = &usb_ccb; 1355 1356 pccb->pdata = usb_stor_buf; 1357 1358 dev_desc->target = dev->devnum; 1359 pccb->lun = dev_desc->lun; 1360 USB_STOR_PRINTF(" address %d\n", dev_desc->target); 1361 1362 if (usb_inquiry(pccb, ss)) 1363 return -1; 1364 1365 perq = usb_stor_buf[0]; 1366 modi = usb_stor_buf[1]; 1367 1368 if ((perq & 0x1f) == 0x1f) { 1369 /* skip unknown devices */ 1370 return 0; 1371 } 1372 if ((modi&0x80) == 0x80) { 1373 /* drive is removable */ 1374 dev_desc->removable = 1; 1375 } 1376 memcpy(&dev_desc->vendor[0], (const void *) &usb_stor_buf[8], 8); 1377 memcpy(&dev_desc->product[0], (const void *) &usb_stor_buf[16], 16); 1378 memcpy(&dev_desc->revision[0], (const void *) &usb_stor_buf[32], 4); 1379 dev_desc->vendor[8] = 0; 1380 dev_desc->product[16] = 0; 1381 dev_desc->revision[4] = 0; 1382 #ifdef CONFIG_USB_BIN_FIXUP 1383 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1384 (uchar *)dev_desc->product); 1385 #endif /* CONFIG_USB_BIN_FIXUP */ 1386 USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1387 usb_stor_buf[3]); 1388 if (usb_test_unit_ready(pccb, ss)) { 1389 printf("Device NOT ready\n" 1390 " Request Sense returned %02X %02X %02X\n", 1391 pccb->sense_buf[2], pccb->sense_buf[12], 1392 pccb->sense_buf[13]); 1393 if (dev_desc->removable == 1) { 1394 dev_desc->type = perq; 1395 return 1; 1396 } 1397 return 0; 1398 } 1399 pccb->pdata = (unsigned char *)&cap[0]; 1400 memset(pccb->pdata, 0, 8); 1401 if (usb_read_capacity(pccb, ss) != 0) { 1402 printf("READ_CAP ERROR\n"); 1403 cap[0] = 2880; 1404 cap[1] = 0x200; 1405 } 1406 USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0], 1407 cap[1]); 1408 #if 0 1409 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1410 cap[0] >>= 16; 1411 #endif 1412 cap[0] = cpu_to_be32(cap[0]); 1413 cap[1] = cpu_to_be32(cap[1]); 1414 1415 /* this assumes bigendian! */ 1416 cap[0] += 1; 1417 capacity = &cap[0]; 1418 blksz = &cap[1]; 1419 USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n", 1420 *capacity, *blksz); 1421 dev_desc->lba = *capacity; 1422 dev_desc->blksz = *blksz; 1423 dev_desc->type = perq; 1424 USB_STOR_PRINTF(" address %d\n", dev_desc->target); 1425 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); 1426 1427 init_part(dev_desc); 1428 1429 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); 1430 return 1; 1431 } 1432