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