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