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 %p(%d) try #%d\n", 351 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!!! */ 528 529 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen); 530 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE, 531 &actlen, USB_CNTL_TIMEOUT * 5); 532 if (result < 0) 533 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 534 return result; 535 } 536 537 /* FIXME: we also need a CBI_command which sets up the completion 538 * interrupt, and waits for it 539 */ 540 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us) 541 { 542 int result = 0; 543 int dir_in, retry; 544 unsigned int pipe; 545 unsigned long status; 546 547 retry = 5; 548 dir_in = US_DIRECTION(srb->cmd[0]); 549 550 if (dir_in) 551 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 552 else 553 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 554 555 while (retry--) { 556 debug("CBI gets a command: Try %d\n", 5 - retry); 557 #ifdef DEBUG 558 usb_show_srb(srb); 559 #endif 560 /* let's send the command via the control pipe */ 561 result = usb_control_msg(us->pusb_dev, 562 usb_sndctrlpipe(us->pusb_dev , 0), 563 US_CBI_ADSC, 564 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 565 0, us->ifnum, 566 srb->cmd, srb->cmdlen, 567 USB_CNTL_TIMEOUT * 5); 568 debug("CB_transport: control msg returned %d, status %lX\n", 569 result, us->pusb_dev->status); 570 /* check the return code for the command */ 571 if (result < 0) { 572 if (us->pusb_dev->status & USB_ST_STALLED) { 573 status = us->pusb_dev->status; 574 debug(" stall during command found," \ 575 " clear pipe\n"); 576 usb_clear_halt(us->pusb_dev, 577 usb_sndctrlpipe(us->pusb_dev, 0)); 578 us->pusb_dev->status = status; 579 } 580 debug(" error during command %02X" \ 581 " Stat = %lX\n", srb->cmd[0], 582 us->pusb_dev->status); 583 return result; 584 } 585 /* transfer the data payload for this command, if one exists*/ 586 587 debug("CB_transport: control msg returned %d," \ 588 " direction is %s to go 0x%lx\n", result, 589 dir_in ? "IN" : "OUT", srb->datalen); 590 if (srb->datalen) { 591 result = us_one_transfer(us, pipe, (char *)srb->pdata, 592 srb->datalen); 593 debug("CBI attempted to transfer data," \ 594 " result is %d status %lX, len %d\n", 595 result, us->pusb_dev->status, 596 us->pusb_dev->act_len); 597 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 598 break; 599 } /* if (srb->datalen) */ 600 else 601 break; 602 } 603 /* return result */ 604 605 return result; 606 } 607 608 609 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us) 610 { 611 int timeout; 612 613 us->ip_wanted = 1; 614 submit_int_msg(us->pusb_dev, us->irqpipe, 615 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 616 timeout = 1000; 617 while (timeout--) { 618 if (us->ip_wanted == 0) 619 break; 620 mdelay(10); 621 } 622 if (us->ip_wanted) { 623 printf(" Did not get interrupt on CBI\n"); 624 us->ip_wanted = 0; 625 return USB_STOR_TRANSPORT_ERROR; 626 } 627 debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n", 628 us->ip_data, us->pusb_dev->irq_act_len, 629 us->pusb_dev->irq_status); 630 /* UFI gives us ASC and ASCQ, like a request sense */ 631 if (us->subclass == US_SC_UFI) { 632 if (srb->cmd[0] == SCSI_REQ_SENSE || 633 srb->cmd[0] == SCSI_INQUIRY) 634 return USB_STOR_TRANSPORT_GOOD; /* Good */ 635 else if (us->ip_data) 636 return USB_STOR_TRANSPORT_FAILED; 637 else 638 return USB_STOR_TRANSPORT_GOOD; 639 } 640 /* otherwise, we interpret the data normally */ 641 switch (us->ip_data) { 642 case 0x0001: 643 return USB_STOR_TRANSPORT_GOOD; 644 case 0x0002: 645 return USB_STOR_TRANSPORT_FAILED; 646 default: 647 return USB_STOR_TRANSPORT_ERROR; 648 } /* switch */ 649 return USB_STOR_TRANSPORT_ERROR; 650 } 651 652 #define USB_TRANSPORT_UNKNOWN_RETRY 5 653 #define USB_TRANSPORT_NOT_READY_RETRY 10 654 655 /* clear a stall on an endpoint - special for BBB devices */ 656 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 657 { 658 int result; 659 660 /* ENDPOINT_HALT = 0, so set value to 0 */ 661 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 662 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 663 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5); 664 return result; 665 } 666 667 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 668 { 669 int result, retry; 670 int dir_in; 671 int actlen, data_actlen; 672 unsigned int pipe, pipein, pipeout; 673 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1); 674 #ifdef BBB_XPORT_TRACE 675 unsigned char *ptr; 676 int index; 677 #endif 678 679 dir_in = US_DIRECTION(srb->cmd[0]); 680 681 /* COMMAND phase */ 682 debug("COMMAND phase\n"); 683 result = usb_stor_BBB_comdat(srb, us); 684 if (result < 0) { 685 debug("failed to send CBW status %ld\n", 686 us->pusb_dev->status); 687 usb_stor_BBB_reset(us); 688 return USB_STOR_TRANSPORT_FAILED; 689 } 690 if (!(us->flags & USB_READY)) 691 mdelay(5); 692 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 693 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 694 /* DATA phase + error handling */ 695 data_actlen = 0; 696 /* no data, go immediately to the STATUS phase */ 697 if (srb->datalen == 0) 698 goto st; 699 debug("DATA phase\n"); 700 if (dir_in) 701 pipe = pipein; 702 else 703 pipe = pipeout; 704 705 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 706 &data_actlen, USB_CNTL_TIMEOUT * 5); 707 /* special handling of STALL in DATA phase */ 708 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 709 debug("DATA:stall\n"); 710 /* clear the STALL on the endpoint */ 711 result = usb_stor_BBB_clear_endpt_stall(us, 712 dir_in ? us->ep_in : us->ep_out); 713 if (result >= 0) 714 /* continue on to STATUS phase */ 715 goto st; 716 } 717 if (result < 0) { 718 debug("usb_bulk_msg error status %ld\n", 719 us->pusb_dev->status); 720 usb_stor_BBB_reset(us); 721 return USB_STOR_TRANSPORT_FAILED; 722 } 723 #ifdef BBB_XPORT_TRACE 724 for (index = 0; index < data_actlen; index++) 725 printf("pdata[%d] %#x ", index, srb->pdata[index]); 726 printf("\n"); 727 #endif 728 /* STATUS phase + error handling */ 729 st: 730 retry = 0; 731 again: 732 debug("STATUS phase\n"); 733 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 734 &actlen, USB_CNTL_TIMEOUT*5); 735 736 /* special handling of STALL in STATUS phase */ 737 if ((result < 0) && (retry < 1) && 738 (us->pusb_dev->status & USB_ST_STALLED)) { 739 debug("STATUS:stall\n"); 740 /* clear the STALL on the endpoint */ 741 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 742 if (result >= 0 && (retry++ < 1)) 743 /* do a retry */ 744 goto again; 745 } 746 if (result < 0) { 747 debug("usb_bulk_msg error status %ld\n", 748 us->pusb_dev->status); 749 usb_stor_BBB_reset(us); 750 return USB_STOR_TRANSPORT_FAILED; 751 } 752 #ifdef BBB_XPORT_TRACE 753 ptr = (unsigned char *)csw; 754 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 755 printf("ptr[%d] %#x ", index, ptr[index]); 756 printf("\n"); 757 #endif 758 /* misuse pipe to get the residue */ 759 pipe = le32_to_cpu(csw->dCSWDataResidue); 760 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 761 pipe = srb->datalen - data_actlen; 762 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 763 debug("!CSWSIGNATURE\n"); 764 usb_stor_BBB_reset(us); 765 return USB_STOR_TRANSPORT_FAILED; 766 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 767 debug("!Tag\n"); 768 usb_stor_BBB_reset(us); 769 return USB_STOR_TRANSPORT_FAILED; 770 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 771 debug(">PHASE\n"); 772 usb_stor_BBB_reset(us); 773 return USB_STOR_TRANSPORT_FAILED; 774 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 775 debug("=PHASE\n"); 776 usb_stor_BBB_reset(us); 777 return USB_STOR_TRANSPORT_FAILED; 778 } else if (data_actlen > srb->datalen) { 779 debug("transferred %dB instead of %ldB\n", 780 data_actlen, srb->datalen); 781 return USB_STOR_TRANSPORT_FAILED; 782 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 783 debug("FAILED\n"); 784 return USB_STOR_TRANSPORT_FAILED; 785 } 786 787 return result; 788 } 789 790 static int usb_stor_CB_transport(ccb *srb, struct us_data *us) 791 { 792 int result, status; 793 ccb *psrb; 794 ccb reqsrb; 795 int retry, notready; 796 797 psrb = &reqsrb; 798 status = USB_STOR_TRANSPORT_GOOD; 799 retry = 0; 800 notready = 0; 801 /* issue the command */ 802 do_retry: 803 result = usb_stor_CB_comdat(srb, us); 804 debug("command / Data returned %d, status %lX\n", 805 result, us->pusb_dev->status); 806 /* if this is an CBI Protocol, get IRQ */ 807 if (us->protocol == US_PR_CBI) { 808 status = usb_stor_CBI_get_status(srb, us); 809 /* if the status is error, report it */ 810 if (status == USB_STOR_TRANSPORT_ERROR) { 811 debug(" USB CBI Command Error\n"); 812 return status; 813 } 814 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 815 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 816 if (!us->ip_data) { 817 /* if the status is good, report it */ 818 if (status == USB_STOR_TRANSPORT_GOOD) { 819 debug(" USB CBI Command Good\n"); 820 return status; 821 } 822 } 823 } 824 /* do we have to issue an auto request? */ 825 /* HERE we have to check the result */ 826 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 827 debug("ERROR %lX\n", us->pusb_dev->status); 828 us->transport_reset(us); 829 return USB_STOR_TRANSPORT_ERROR; 830 } 831 if ((us->protocol == US_PR_CBI) && 832 ((srb->cmd[0] == SCSI_REQ_SENSE) || 833 (srb->cmd[0] == SCSI_INQUIRY))) { 834 /* do not issue an autorequest after request sense */ 835 debug("No auto request and good\n"); 836 return USB_STOR_TRANSPORT_GOOD; 837 } 838 /* issue an request_sense */ 839 memset(&psrb->cmd[0], 0, 12); 840 psrb->cmd[0] = SCSI_REQ_SENSE; 841 psrb->cmd[1] = srb->lun << 5; 842 psrb->cmd[4] = 18; 843 psrb->datalen = 18; 844 psrb->pdata = &srb->sense_buf[0]; 845 psrb->cmdlen = 12; 846 /* issue the command */ 847 result = usb_stor_CB_comdat(psrb, us); 848 debug("auto request returned %d\n", result); 849 /* if this is an CBI Protocol, get IRQ */ 850 if (us->protocol == US_PR_CBI) 851 status = usb_stor_CBI_get_status(psrb, us); 852 853 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 854 debug(" AUTO REQUEST ERROR %ld\n", 855 us->pusb_dev->status); 856 return USB_STOR_TRANSPORT_ERROR; 857 } 858 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 859 srb->sense_buf[0], srb->sense_buf[2], 860 srb->sense_buf[12], srb->sense_buf[13]); 861 /* Check the auto request result */ 862 if ((srb->sense_buf[2] == 0) && 863 (srb->sense_buf[12] == 0) && 864 (srb->sense_buf[13] == 0)) { 865 /* ok, no sense */ 866 return USB_STOR_TRANSPORT_GOOD; 867 } 868 869 /* Check the auto request result */ 870 switch (srb->sense_buf[2]) { 871 case 0x01: 872 /* Recovered Error */ 873 return USB_STOR_TRANSPORT_GOOD; 874 break; 875 case 0x02: 876 /* Not Ready */ 877 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 878 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 879 " 0x%02X (NOT READY)\n", srb->cmd[0], 880 srb->sense_buf[0], srb->sense_buf[2], 881 srb->sense_buf[12], srb->sense_buf[13]); 882 return USB_STOR_TRANSPORT_FAILED; 883 } else { 884 mdelay(100); 885 goto do_retry; 886 } 887 break; 888 default: 889 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 890 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 891 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 892 srb->sense_buf[2], srb->sense_buf[12], 893 srb->sense_buf[13]); 894 return USB_STOR_TRANSPORT_FAILED; 895 } else 896 goto do_retry; 897 break; 898 } 899 return USB_STOR_TRANSPORT_FAILED; 900 } 901 902 903 static int usb_inquiry(ccb *srb, struct us_data *ss) 904 { 905 int retry, i; 906 retry = 5; 907 do { 908 memset(&srb->cmd[0], 0, 12); 909 srb->cmd[0] = SCSI_INQUIRY; 910 srb->cmd[1] = srb->lun << 5; 911 srb->cmd[4] = 36; 912 srb->datalen = 36; 913 srb->cmdlen = 12; 914 i = ss->transport(srb, ss); 915 debug("inquiry returns %d\n", i); 916 if (i == 0) 917 break; 918 } while (--retry); 919 920 if (!retry) { 921 printf("error in inquiry\n"); 922 return -1; 923 } 924 return 0; 925 } 926 927 static int usb_request_sense(ccb *srb, struct us_data *ss) 928 { 929 char *ptr; 930 931 ptr = (char *)srb->pdata; 932 memset(&srb->cmd[0], 0, 12); 933 srb->cmd[0] = SCSI_REQ_SENSE; 934 srb->cmd[1] = srb->lun << 5; 935 srb->cmd[4] = 18; 936 srb->datalen = 18; 937 srb->pdata = &srb->sense_buf[0]; 938 srb->cmdlen = 12; 939 ss->transport(srb, ss); 940 debug("Request Sense returned %02X %02X %02X\n", 941 srb->sense_buf[2], srb->sense_buf[12], 942 srb->sense_buf[13]); 943 srb->pdata = (uchar *)ptr; 944 return 0; 945 } 946 947 static int usb_test_unit_ready(ccb *srb, struct us_data *ss) 948 { 949 int retries = 10; 950 951 do { 952 memset(&srb->cmd[0], 0, 12); 953 srb->cmd[0] = SCSI_TST_U_RDY; 954 srb->cmd[1] = srb->lun << 5; 955 srb->datalen = 0; 956 srb->cmdlen = 12; 957 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) { 958 ss->flags |= USB_READY; 959 return 0; 960 } 961 usb_request_sense(srb, ss); 962 /* 963 * Check the Key Code Qualifier, if it matches 964 * "Not Ready - medium not present" 965 * (the sense Key equals 0x2 and the ASC is 0x3a) 966 * return immediately as the medium being absent won't change 967 * unless there is a user action. 968 */ 969 if ((srb->sense_buf[2] == 0x02) && 970 (srb->sense_buf[12] == 0x3a)) 971 return -1; 972 mdelay(100); 973 } while (retries--); 974 975 return -1; 976 } 977 978 static int usb_read_capacity(ccb *srb, struct us_data *ss) 979 { 980 int retry; 981 /* XXX retries */ 982 retry = 3; 983 do { 984 memset(&srb->cmd[0], 0, 12); 985 srb->cmd[0] = SCSI_RD_CAPAC; 986 srb->cmd[1] = srb->lun << 5; 987 srb->datalen = 8; 988 srb->cmdlen = 12; 989 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 990 return 0; 991 } while (retry--); 992 993 return -1; 994 } 995 996 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 997 unsigned short blocks) 998 { 999 memset(&srb->cmd[0], 0, 12); 1000 srb->cmd[0] = SCSI_READ10; 1001 srb->cmd[1] = srb->lun << 5; 1002 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1003 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1004 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1005 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1006 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1007 srb->cmd[8] = (unsigned char) blocks & 0xff; 1008 srb->cmdlen = 12; 1009 debug("read10: start %lx blocks %x\n", start, blocks); 1010 return ss->transport(srb, ss); 1011 } 1012 1013 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 1014 unsigned short blocks) 1015 { 1016 memset(&srb->cmd[0], 0, 12); 1017 srb->cmd[0] = SCSI_WRITE10; 1018 srb->cmd[1] = srb->lun << 5; 1019 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1020 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1021 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1022 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1023 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1024 srb->cmd[8] = (unsigned char) blocks & 0xff; 1025 srb->cmdlen = 12; 1026 debug("write10: start %lx blocks %x\n", start, blocks); 1027 return ss->transport(srb, ss); 1028 } 1029 1030 1031 #ifdef CONFIG_USB_BIN_FIXUP 1032 /* 1033 * Some USB storage devices queried for SCSI identification data respond with 1034 * binary strings, which if output to the console freeze the terminal. The 1035 * workaround is to modify the vendor and product strings read from such 1036 * device with proper values (as reported by 'usb info'). 1037 * 1038 * Vendor and product length limits are taken from the definition of 1039 * block_dev_desc_t in include/part.h. 1040 */ 1041 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1042 unsigned char vendor[], 1043 unsigned char product[]) { 1044 const unsigned char max_vendor_len = 40; 1045 const unsigned char max_product_len = 20; 1046 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1047 strncpy((char *)vendor, "SMSC", max_vendor_len); 1048 strncpy((char *)product, "Flash Media Cntrller", 1049 max_product_len); 1050 } 1051 } 1052 #endif /* CONFIG_USB_BIN_FIXUP */ 1053 1054 unsigned long usb_stor_read(int device, lbaint_t blknr, 1055 lbaint_t blkcnt, void *buffer) 1056 { 1057 lbaint_t start, blks; 1058 uintptr_t buf_addr; 1059 unsigned short smallblks; 1060 struct usb_device *dev; 1061 struct us_data *ss; 1062 int retry, i; 1063 ccb *srb = &usb_ccb; 1064 1065 if (blkcnt == 0) 1066 return 0; 1067 1068 device &= 0xff; 1069 /* Setup device */ 1070 debug("\nusb_read: dev %d \n", device); 1071 dev = NULL; 1072 for (i = 0; i < USB_MAX_DEVICE; i++) { 1073 dev = usb_get_dev_index(i); 1074 if (dev == NULL) 1075 return 0; 1076 if (dev->devnum == usb_dev_desc[device].target) 1077 break; 1078 } 1079 ss = (struct us_data *)dev->privptr; 1080 1081 usb_disable_asynch(1); /* asynch transfer not allowed */ 1082 srb->lun = usb_dev_desc[device].lun; 1083 buf_addr = (uintptr_t)buffer; 1084 start = blknr; 1085 blks = blkcnt; 1086 1087 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF 1088 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr); 1089 1090 do { 1091 /* XXX need some comment here */ 1092 retry = 2; 1093 srb->pdata = (unsigned char *)buf_addr; 1094 if (blks > USB_MAX_XFER_BLK) 1095 smallblks = USB_MAX_XFER_BLK; 1096 else 1097 smallblks = (unsigned short) blks; 1098 retry_it: 1099 if (smallblks == USB_MAX_XFER_BLK) 1100 usb_show_progress(); 1101 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1102 srb->pdata = (unsigned char *)buf_addr; 1103 if (usb_read_10(srb, ss, start, smallblks)) { 1104 debug("Read ERROR\n"); 1105 usb_request_sense(srb, ss); 1106 if (retry--) 1107 goto retry_it; 1108 blkcnt -= blks; 1109 break; 1110 } 1111 start += smallblks; 1112 blks -= smallblks; 1113 buf_addr += srb->datalen; 1114 } while (blks != 0); 1115 ss->flags &= ~USB_READY; 1116 1117 debug("usb_read: end startblk " LBAF 1118 ", blccnt %x buffer %" PRIxPTR "\n", 1119 start, smallblks, buf_addr); 1120 1121 usb_disable_asynch(0); /* asynch transfer allowed */ 1122 if (blkcnt >= USB_MAX_XFER_BLK) 1123 debug("\n"); 1124 return blkcnt; 1125 } 1126 1127 unsigned long usb_stor_write(int device, lbaint_t blknr, 1128 lbaint_t blkcnt, const void *buffer) 1129 { 1130 lbaint_t start, blks; 1131 uintptr_t buf_addr; 1132 unsigned short smallblks; 1133 struct usb_device *dev; 1134 struct us_data *ss; 1135 int retry, i; 1136 ccb *srb = &usb_ccb; 1137 1138 if (blkcnt == 0) 1139 return 0; 1140 1141 device &= 0xff; 1142 /* Setup device */ 1143 debug("\nusb_write: dev %d \n", device); 1144 dev = NULL; 1145 for (i = 0; i < USB_MAX_DEVICE; i++) { 1146 dev = usb_get_dev_index(i); 1147 if (dev == NULL) 1148 return 0; 1149 if (dev->devnum == usb_dev_desc[device].target) 1150 break; 1151 } 1152 ss = (struct us_data *)dev->privptr; 1153 1154 usb_disable_asynch(1); /* asynch transfer not allowed */ 1155 1156 srb->lun = usb_dev_desc[device].lun; 1157 buf_addr = (uintptr_t)buffer; 1158 start = blknr; 1159 blks = blkcnt; 1160 1161 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF 1162 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr); 1163 1164 do { 1165 /* If write fails retry for max retry count else 1166 * return with number of blocks written successfully. 1167 */ 1168 retry = 2; 1169 srb->pdata = (unsigned char *)buf_addr; 1170 if (blks > USB_MAX_XFER_BLK) 1171 smallblks = USB_MAX_XFER_BLK; 1172 else 1173 smallblks = (unsigned short) blks; 1174 retry_it: 1175 if (smallblks == USB_MAX_XFER_BLK) 1176 usb_show_progress(); 1177 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1178 srb->pdata = (unsigned char *)buf_addr; 1179 if (usb_write_10(srb, ss, start, smallblks)) { 1180 debug("Write ERROR\n"); 1181 usb_request_sense(srb, ss); 1182 if (retry--) 1183 goto retry_it; 1184 blkcnt -= blks; 1185 break; 1186 } 1187 start += smallblks; 1188 blks -= smallblks; 1189 buf_addr += srb->datalen; 1190 } while (blks != 0); 1191 ss->flags &= ~USB_READY; 1192 1193 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %" 1194 PRIxPTR "\n", start, smallblks, buf_addr); 1195 1196 usb_disable_asynch(0); /* asynch transfer allowed */ 1197 if (blkcnt >= USB_MAX_XFER_BLK) 1198 debug("\n"); 1199 return blkcnt; 1200 1201 } 1202 1203 /* Probe to see if a new device is actually a Storage device */ 1204 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1205 struct us_data *ss) 1206 { 1207 struct usb_interface *iface; 1208 int i; 1209 struct usb_endpoint_descriptor *ep_desc; 1210 unsigned int flags = 0; 1211 1212 int protocol = 0; 1213 int subclass = 0; 1214 1215 /* let's examine the device now */ 1216 iface = &dev->config.if_desc[ifnum]; 1217 1218 #if 0 1219 /* this is the place to patch some storage devices */ 1220 debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor, 1221 dev->descriptor.idProduct); 1222 1223 if ((dev->descriptor.idVendor) == 0x066b && 1224 (dev->descriptor.idProduct) == 0x0103) { 1225 debug("patched for E-USB\n"); 1226 protocol = US_PR_CB; 1227 subclass = US_SC_UFI; /* an assumption */ 1228 } 1229 #endif 1230 1231 if (dev->descriptor.bDeviceClass != 0 || 1232 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1233 iface->desc.bInterfaceSubClass < US_SC_MIN || 1234 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1235 /* if it's not a mass storage, we go no further */ 1236 return 0; 1237 } 1238 1239 memset(ss, 0, sizeof(struct us_data)); 1240 1241 /* At this point, we know we've got a live one */ 1242 debug("\n\nUSB Mass Storage device detected\n"); 1243 1244 /* Initialize the us_data structure with some useful info */ 1245 ss->flags = flags; 1246 ss->ifnum = ifnum; 1247 ss->pusb_dev = dev; 1248 ss->attention_done = 0; 1249 1250 /* If the device has subclass and protocol, then use that. Otherwise, 1251 * take data from the specific interface. 1252 */ 1253 if (subclass) { 1254 ss->subclass = subclass; 1255 ss->protocol = protocol; 1256 } else { 1257 ss->subclass = iface->desc.bInterfaceSubClass; 1258 ss->protocol = iface->desc.bInterfaceProtocol; 1259 } 1260 1261 /* set the handler pointers based on the protocol */ 1262 debug("Transport: "); 1263 switch (ss->protocol) { 1264 case US_PR_CB: 1265 debug("Control/Bulk\n"); 1266 ss->transport = usb_stor_CB_transport; 1267 ss->transport_reset = usb_stor_CB_reset; 1268 break; 1269 1270 case US_PR_CBI: 1271 debug("Control/Bulk/Interrupt\n"); 1272 ss->transport = usb_stor_CB_transport; 1273 ss->transport_reset = usb_stor_CB_reset; 1274 break; 1275 case US_PR_BULK: 1276 debug("Bulk/Bulk/Bulk\n"); 1277 ss->transport = usb_stor_BBB_transport; 1278 ss->transport_reset = usb_stor_BBB_reset; 1279 break; 1280 default: 1281 printf("USB Storage Transport unknown / not yet implemented\n"); 1282 return 0; 1283 break; 1284 } 1285 1286 /* 1287 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1288 * An optional interrupt is OK (necessary for CBI protocol). 1289 * We will ignore any others. 1290 */ 1291 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1292 ep_desc = &iface->ep_desc[i]; 1293 /* is it an BULK endpoint? */ 1294 if ((ep_desc->bmAttributes & 1295 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1296 if (ep_desc->bEndpointAddress & USB_DIR_IN) 1297 ss->ep_in = ep_desc->bEndpointAddress & 1298 USB_ENDPOINT_NUMBER_MASK; 1299 else 1300 ss->ep_out = 1301 ep_desc->bEndpointAddress & 1302 USB_ENDPOINT_NUMBER_MASK; 1303 } 1304 1305 /* is it an interrupt endpoint? */ 1306 if ((ep_desc->bmAttributes & 1307 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1308 ss->ep_int = ep_desc->bEndpointAddress & 1309 USB_ENDPOINT_NUMBER_MASK; 1310 ss->irqinterval = ep_desc->bInterval; 1311 } 1312 } 1313 debug("Endpoints In %d Out %d Int %d\n", 1314 ss->ep_in, ss->ep_out, ss->ep_int); 1315 1316 /* Do some basic sanity checks, and bail if we find a problem */ 1317 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1318 !ss->ep_in || !ss->ep_out || 1319 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1320 debug("Problems with device\n"); 1321 return 0; 1322 } 1323 /* set class specific stuff */ 1324 /* We only handle certain protocols. Currently, these are 1325 * the only ones. 1326 * The SFF8070 accepts the requests used in u-boot 1327 */ 1328 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1329 ss->subclass != US_SC_8070) { 1330 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1331 return 0; 1332 } 1333 if (ss->ep_int) { 1334 /* we had found an interrupt endpoint, prepare irq pipe 1335 * set up the IRQ pipe and handler 1336 */ 1337 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1338 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1339 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1340 dev->irq_handle = usb_stor_irq; 1341 } 1342 dev->privptr = (void *)ss; 1343 return 1; 1344 } 1345 1346 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1347 block_dev_desc_t *dev_desc) 1348 { 1349 unsigned char perq, modi; 1350 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2); 1351 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36); 1352 u32 capacity, blksz; 1353 ccb *pccb = &usb_ccb; 1354 1355 pccb->pdata = usb_stor_buf; 1356 1357 dev_desc->target = dev->devnum; 1358 pccb->lun = dev_desc->lun; 1359 debug(" address %d\n", dev_desc->target); 1360 1361 if (usb_inquiry(pccb, ss)) 1362 return -1; 1363 1364 perq = usb_stor_buf[0]; 1365 modi = usb_stor_buf[1]; 1366 1367 /* 1368 * Skip unknown devices (0x1f) and enclosure service devices (0x0d), 1369 * they would not respond to test_unit_ready . 1370 */ 1371 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) { 1372 return 0; 1373 } 1374 if ((modi&0x80) == 0x80) { 1375 /* drive is removable */ 1376 dev_desc->removable = 1; 1377 } 1378 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8); 1379 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16); 1380 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4); 1381 dev_desc->vendor[8] = 0; 1382 dev_desc->product[16] = 0; 1383 dev_desc->revision[4] = 0; 1384 #ifdef CONFIG_USB_BIN_FIXUP 1385 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1386 (uchar *)dev_desc->product); 1387 #endif /* CONFIG_USB_BIN_FIXUP */ 1388 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1389 usb_stor_buf[3]); 1390 if (usb_test_unit_ready(pccb, ss)) { 1391 printf("Device NOT ready\n" 1392 " Request Sense returned %02X %02X %02X\n", 1393 pccb->sense_buf[2], pccb->sense_buf[12], 1394 pccb->sense_buf[13]); 1395 if (dev_desc->removable == 1) { 1396 dev_desc->type = perq; 1397 return 1; 1398 } 1399 return 0; 1400 } 1401 pccb->pdata = (unsigned char *)cap; 1402 memset(pccb->pdata, 0, 8); 1403 if (usb_read_capacity(pccb, ss) != 0) { 1404 printf("READ_CAP ERROR\n"); 1405 cap[0] = 2880; 1406 cap[1] = 0x200; 1407 } 1408 ss->flags &= ~USB_READY; 1409 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]); 1410 #if 0 1411 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1412 cap[0] >>= 16; 1413 1414 cap[0] = cpu_to_be32(cap[0]); 1415 cap[1] = cpu_to_be32(cap[1]); 1416 #endif 1417 1418 capacity = be32_to_cpu(cap[0]) + 1; 1419 blksz = be32_to_cpu(cap[1]); 1420 1421 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz); 1422 dev_desc->lba = capacity; 1423 dev_desc->blksz = blksz; 1424 dev_desc->log2blksz = LOG2(dev_desc->blksz); 1425 dev_desc->type = perq; 1426 debug(" address %d\n", dev_desc->target); 1427 debug("partype: %d\n", dev_desc->part_type); 1428 1429 init_part(dev_desc); 1430 1431 debug("partype: %d\n", dev_desc->part_type); 1432 return 1; 1433 } 1434