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 <mapmem.h> 38 #include <asm/byteorder.h> 39 #include <asm/processor.h> 40 41 #include <part.h> 42 #include <usb.h> 43 44 #undef BBB_COMDAT_TRACE 45 #undef BBB_XPORT_TRACE 46 47 #include <scsi.h> 48 /* direction table -- this indicates the direction of the data 49 * transfer for each command code -- a 1 indicates input 50 */ 51 static const unsigned char us_direction[256/8] = { 52 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77, 53 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 54 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 55 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 56 }; 57 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1) 58 59 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN))); 60 static __u32 CBWTag; 61 62 #define USB_MAX_STOR_DEV 5 63 static int usb_max_devs; /* number of highest available usb device */ 64 65 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV]; 66 67 struct us_data; 68 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data); 69 typedef int (*trans_reset)(struct us_data *data); 70 71 struct us_data { 72 struct usb_device *pusb_dev; /* this usb_device */ 73 74 unsigned int flags; /* from filter initially */ 75 # define USB_READY (1 << 0) 76 unsigned char ifnum; /* interface number */ 77 unsigned char ep_in; /* in endpoint */ 78 unsigned char ep_out; /* out ....... */ 79 unsigned char ep_int; /* interrupt . */ 80 unsigned char subclass; /* as in overview */ 81 unsigned char protocol; /* .............. */ 82 unsigned char attention_done; /* force attn on first cmd */ 83 unsigned short ip_data; /* interrupt data */ 84 int action; /* what to do */ 85 int ip_wanted; /* needed */ 86 int *irq_handle; /* for USB int requests */ 87 unsigned int irqpipe; /* pipe for release_irq */ 88 unsigned char irqmaxp; /* max packed for irq Pipe */ 89 unsigned char irqinterval; /* Intervall for IRQ Pipe */ 90 ccb *srb; /* current srb */ 91 trans_reset transport_reset; /* reset routine */ 92 trans_cmnd transport; /* transport routine */ 93 }; 94 95 #ifdef CONFIG_USB_EHCI 96 /* 97 * The U-Boot EHCI driver can handle any transfer length as long as there is 98 * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are 99 * limited to 65535 blocks. 100 */ 101 #define USB_MAX_XFER_BLK 65535 102 #else 103 #define USB_MAX_XFER_BLK 20 104 #endif 105 106 static struct us_data usb_stor[USB_MAX_STOR_DEV]; 107 108 109 #define USB_STOR_TRANSPORT_GOOD 0 110 #define USB_STOR_TRANSPORT_FAILED -1 111 #define USB_STOR_TRANSPORT_ERROR -2 112 113 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, 114 block_dev_desc_t *dev_desc); 115 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 116 struct us_data *ss); 117 unsigned long usb_stor_read(int device, lbaint_t blknr, 118 lbaint_t blkcnt, void *buffer); 119 unsigned long usb_stor_write(int device, lbaint_t blknr, 120 lbaint_t blkcnt, const void *buffer); 121 struct usb_device * usb_get_dev_index(int index); 122 void uhci_show_temp_int_td(void); 123 124 #ifdef CONFIG_PARTITIONS 125 block_dev_desc_t *usb_stor_get_dev(int index) 126 { 127 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL; 128 } 129 #endif 130 131 static void usb_show_progress(void) 132 { 133 debug("."); 134 } 135 136 /******************************************************************************* 137 * show info on storage devices; 'usb start/init' must be invoked earlier 138 * as we only retrieve structures populated during devices initialization 139 */ 140 int usb_stor_info(void) 141 { 142 int i; 143 144 if (usb_max_devs > 0) { 145 for (i = 0; i < usb_max_devs; i++) { 146 printf(" Device %d: ", i); 147 dev_print(&usb_dev_desc[i]); 148 } 149 return 0; 150 } 151 152 printf("No storage devices, perhaps not 'usb start'ed..?\n"); 153 return 1; 154 } 155 156 static unsigned int usb_get_max_lun(struct us_data *us) 157 { 158 int len; 159 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1); 160 len = usb_control_msg(us->pusb_dev, 161 usb_rcvctrlpipe(us->pusb_dev, 0), 162 US_BBB_GET_MAX_LUN, 163 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 164 0, us->ifnum, 165 result, sizeof(char), 166 USB_CNTL_TIMEOUT * 5); 167 debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result); 168 return (len > 0) ? *result : 0; 169 } 170 171 /******************************************************************************* 172 * scan the usb and reports device info 173 * to the user if mode = 1 174 * returns current device or -1 if no 175 */ 176 int usb_stor_scan(int mode) 177 { 178 unsigned char i; 179 struct usb_device *dev; 180 181 if (mode == 1) 182 printf(" scanning usb for storage devices... "); 183 184 usb_disable_asynch(1); /* asynch transfer not allowed */ 185 186 for (i = 0; i < USB_MAX_STOR_DEV; i++) { 187 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t)); 188 usb_dev_desc[i].if_type = IF_TYPE_USB; 189 usb_dev_desc[i].dev = i; 190 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN; 191 usb_dev_desc[i].target = 0xff; 192 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN; 193 usb_dev_desc[i].block_read = usb_stor_read; 194 usb_dev_desc[i].block_write = usb_stor_write; 195 } 196 197 usb_max_devs = 0; 198 for (i = 0; i < USB_MAX_DEVICE; i++) { 199 dev = usb_get_dev_index(i); /* get device */ 200 debug("i=%d\n", i); 201 if (dev == NULL) 202 break; /* no more devices available */ 203 204 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) { 205 /* OK, it's a storage device. Iterate over its LUNs 206 * and populate `usb_dev_desc'. 207 */ 208 int lun, max_lun, start = usb_max_devs; 209 210 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 211 for (lun = 0; 212 lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; 213 lun++) { 214 usb_dev_desc[usb_max_devs].lun = lun; 215 if (usb_stor_get_info(dev, &usb_stor[start], 216 &usb_dev_desc[usb_max_devs]) == 1) { 217 usb_max_devs++; 218 } 219 } 220 } 221 /* if storage device */ 222 if (usb_max_devs == USB_MAX_STOR_DEV) { 223 printf("max USB Storage Device reached: %d stopping\n", 224 usb_max_devs); 225 break; 226 } 227 } /* for */ 228 229 usb_disable_asynch(0); /* asynch transfer allowed */ 230 printf("%d Storage Device(s) found\n", usb_max_devs); 231 if (usb_max_devs > 0) 232 return 0; 233 return -1; 234 } 235 236 static int usb_stor_irq(struct usb_device *dev) 237 { 238 struct us_data *us; 239 us = (struct us_data *)dev->privptr; 240 241 if (us->ip_wanted) 242 us->ip_wanted = 0; 243 return 0; 244 } 245 246 247 #ifdef DEBUG 248 249 static void usb_show_srb(ccb *pccb) 250 { 251 int i; 252 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 253 for (i = 0; i < 12; i++) 254 printf("%02X ", pccb->cmd[i]); 255 printf("\n"); 256 } 257 258 static void display_int_status(unsigned long tmp) 259 { 260 printf("Status: %s %s %s %s %s %s %s\n", 261 (tmp & USB_ST_ACTIVE) ? "Active" : "", 262 (tmp & USB_ST_STALLED) ? "Stalled" : "", 263 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 264 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 265 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 266 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 267 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 268 } 269 #endif 270 /*********************************************************************** 271 * Data transfer routines 272 ***********************************************************************/ 273 274 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 275 { 276 int max_size; 277 int this_xfer; 278 int result; 279 int partial; 280 int maxtry; 281 int stat; 282 283 /* determine the maximum packet size for these transfers */ 284 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 285 286 /* while we have data left to transfer */ 287 while (length) { 288 289 /* calculate how long this will be -- maximum or a remainder */ 290 this_xfer = length > max_size ? max_size : length; 291 length -= this_xfer; 292 293 /* setup the retry counter */ 294 maxtry = 10; 295 296 /* set up the transfer loop */ 297 do { 298 /* transfer the data */ 299 debug("Bulk xfer 0x%lx(%d) try #%d\n", 300 (ulong)map_to_sysmem(buf), this_xfer, 301 11 - maxtry); 302 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 303 this_xfer, &partial, 304 USB_CNTL_TIMEOUT * 5); 305 debug("bulk_msg returned %d xferred %d/%d\n", 306 result, partial, this_xfer); 307 if (us->pusb_dev->status != 0) { 308 /* if we stall, we need to clear it before 309 * we go on 310 */ 311 #ifdef DEBUG 312 display_int_status(us->pusb_dev->status); 313 #endif 314 if (us->pusb_dev->status & USB_ST_STALLED) { 315 debug("stalled ->clearing endpoint" \ 316 "halt for pipe 0x%x\n", pipe); 317 stat = us->pusb_dev->status; 318 usb_clear_halt(us->pusb_dev, pipe); 319 us->pusb_dev->status = stat; 320 if (this_xfer == partial) { 321 debug("bulk transferred" \ 322 "with error %lX," \ 323 " but data ok\n", 324 us->pusb_dev->status); 325 return 0; 326 } 327 else 328 return result; 329 } 330 if (us->pusb_dev->status & USB_ST_NAK_REC) { 331 debug("Device NAKed bulk_msg\n"); 332 return result; 333 } 334 debug("bulk transferred with error"); 335 if (this_xfer == partial) { 336 debug(" %ld, but data ok\n", 337 us->pusb_dev->status); 338 return 0; 339 } 340 /* if our try counter reaches 0, bail out */ 341 debug(" %ld, data %d\n", 342 us->pusb_dev->status, partial); 343 if (!maxtry--) 344 return result; 345 } 346 /* update to show what data was transferred */ 347 this_xfer -= partial; 348 buf += partial; 349 /* continue until this transfer is done */ 350 } while (this_xfer); 351 } 352 353 /* if we get here, we're done and successful */ 354 return 0; 355 } 356 357 static int usb_stor_BBB_reset(struct us_data *us) 358 { 359 int result; 360 unsigned int pipe; 361 362 /* 363 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 364 * 365 * For Reset Recovery the host shall issue in the following order: 366 * a) a Bulk-Only Mass Storage Reset 367 * b) a Clear Feature HALT to the Bulk-In endpoint 368 * c) a Clear Feature HALT to the Bulk-Out endpoint 369 * 370 * This is done in 3 steps. 371 * 372 * If the reset doesn't succeed, the device should be port reset. 373 * 374 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 375 */ 376 debug("BBB_reset\n"); 377 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 378 US_BBB_RESET, 379 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 380 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5); 381 382 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 383 debug("RESET:stall\n"); 384 return -1; 385 } 386 387 /* long wait for reset */ 388 mdelay(150); 389 debug("BBB_reset result %d: status %lX reset\n", 390 result, us->pusb_dev->status); 391 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 392 result = usb_clear_halt(us->pusb_dev, pipe); 393 /* long wait for reset */ 394 mdelay(150); 395 debug("BBB_reset result %d: status %lX clearing IN endpoint\n", 396 result, us->pusb_dev->status); 397 /* long wait for reset */ 398 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 399 result = usb_clear_halt(us->pusb_dev, pipe); 400 mdelay(150); 401 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n", 402 result, us->pusb_dev->status); 403 debug("BBB_reset done\n"); 404 return 0; 405 } 406 407 /* FIXME: this reset function doesn't really reset the port, and it 408 * should. Actually it should probably do what it's doing here, and 409 * reset the port physically 410 */ 411 static int usb_stor_CB_reset(struct us_data *us) 412 { 413 unsigned char cmd[12]; 414 int result; 415 416 debug("CB_reset\n"); 417 memset(cmd, 0xff, sizeof(cmd)); 418 cmd[0] = SCSI_SEND_DIAG; 419 cmd[1] = 4; 420 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 421 US_CBI_ADSC, 422 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 423 0, us->ifnum, cmd, sizeof(cmd), 424 USB_CNTL_TIMEOUT * 5); 425 426 /* long wait for reset */ 427 mdelay(1500); 428 debug("CB_reset result %d: status %lX clearing endpoint halt\n", 429 result, us->pusb_dev->status); 430 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in)); 431 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out)); 432 433 debug("CB_reset done\n"); 434 return 0; 435 } 436 437 /* 438 * Set up the command for a BBB device. Note that the actual SCSI 439 * command is copied into cbw.CBWCDB. 440 */ 441 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us) 442 { 443 int result; 444 int actlen; 445 int dir_in; 446 unsigned int pipe; 447 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1); 448 449 dir_in = US_DIRECTION(srb->cmd[0]); 450 451 #ifdef BBB_COMDAT_TRACE 452 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n", 453 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, 454 srb->pdata); 455 if (srb->cmdlen) { 456 for (result = 0; result < srb->cmdlen; result++) 457 printf("cmd[%d] %#x ", result, srb->cmd[result]); 458 printf("\n"); 459 } 460 #endif 461 /* sanity checks */ 462 if (!(srb->cmdlen <= CBWCDBLENGTH)) { 463 debug("usb_stor_BBB_comdat:cmdlen too large\n"); 464 return -1; 465 } 466 467 /* always OUT to the ep */ 468 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 469 470 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE); 471 cbw->dCBWTag = cpu_to_le32(CBWTag++); 472 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen); 473 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT); 474 cbw->bCBWLUN = srb->lun; 475 cbw->bCDBLength = srb->cmdlen; 476 /* copy the command data into the CBW command data buffer */ 477 /* DST SRC LEN!!! */ 478 479 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen); 480 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE, 481 &actlen, USB_CNTL_TIMEOUT * 5); 482 if (result < 0) 483 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 484 return result; 485 } 486 487 /* FIXME: we also need a CBI_command which sets up the completion 488 * interrupt, and waits for it 489 */ 490 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us) 491 { 492 int result = 0; 493 int dir_in, retry; 494 unsigned int pipe; 495 unsigned long status; 496 497 retry = 5; 498 dir_in = US_DIRECTION(srb->cmd[0]); 499 500 if (dir_in) 501 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 502 else 503 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 504 505 while (retry--) { 506 debug("CBI gets a command: Try %d\n", 5 - retry); 507 #ifdef DEBUG 508 usb_show_srb(srb); 509 #endif 510 /* let's send the command via the control pipe */ 511 result = usb_control_msg(us->pusb_dev, 512 usb_sndctrlpipe(us->pusb_dev , 0), 513 US_CBI_ADSC, 514 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 515 0, us->ifnum, 516 srb->cmd, srb->cmdlen, 517 USB_CNTL_TIMEOUT * 5); 518 debug("CB_transport: control msg returned %d, status %lX\n", 519 result, us->pusb_dev->status); 520 /* check the return code for the command */ 521 if (result < 0) { 522 if (us->pusb_dev->status & USB_ST_STALLED) { 523 status = us->pusb_dev->status; 524 debug(" stall during command found," \ 525 " clear pipe\n"); 526 usb_clear_halt(us->pusb_dev, 527 usb_sndctrlpipe(us->pusb_dev, 0)); 528 us->pusb_dev->status = status; 529 } 530 debug(" error during command %02X" \ 531 " Stat = %lX\n", srb->cmd[0], 532 us->pusb_dev->status); 533 return result; 534 } 535 /* transfer the data payload for this command, if one exists*/ 536 537 debug("CB_transport: control msg returned %d," \ 538 " direction is %s to go 0x%lx\n", result, 539 dir_in ? "IN" : "OUT", srb->datalen); 540 if (srb->datalen) { 541 result = us_one_transfer(us, pipe, (char *)srb->pdata, 542 srb->datalen); 543 debug("CBI attempted to transfer data," \ 544 " result is %d status %lX, len %d\n", 545 result, us->pusb_dev->status, 546 us->pusb_dev->act_len); 547 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 548 break; 549 } /* if (srb->datalen) */ 550 else 551 break; 552 } 553 /* return result */ 554 555 return result; 556 } 557 558 559 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us) 560 { 561 int timeout; 562 563 us->ip_wanted = 1; 564 submit_int_msg(us->pusb_dev, us->irqpipe, 565 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 566 timeout = 1000; 567 while (timeout--) { 568 if (us->ip_wanted == 0) 569 break; 570 mdelay(10); 571 } 572 if (us->ip_wanted) { 573 printf(" Did not get interrupt on CBI\n"); 574 us->ip_wanted = 0; 575 return USB_STOR_TRANSPORT_ERROR; 576 } 577 debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n", 578 us->ip_data, us->pusb_dev->irq_act_len, 579 us->pusb_dev->irq_status); 580 /* UFI gives us ASC and ASCQ, like a request sense */ 581 if (us->subclass == US_SC_UFI) { 582 if (srb->cmd[0] == SCSI_REQ_SENSE || 583 srb->cmd[0] == SCSI_INQUIRY) 584 return USB_STOR_TRANSPORT_GOOD; /* Good */ 585 else if (us->ip_data) 586 return USB_STOR_TRANSPORT_FAILED; 587 else 588 return USB_STOR_TRANSPORT_GOOD; 589 } 590 /* otherwise, we interpret the data normally */ 591 switch (us->ip_data) { 592 case 0x0001: 593 return USB_STOR_TRANSPORT_GOOD; 594 case 0x0002: 595 return USB_STOR_TRANSPORT_FAILED; 596 default: 597 return USB_STOR_TRANSPORT_ERROR; 598 } /* switch */ 599 return USB_STOR_TRANSPORT_ERROR; 600 } 601 602 #define USB_TRANSPORT_UNKNOWN_RETRY 5 603 #define USB_TRANSPORT_NOT_READY_RETRY 10 604 605 /* clear a stall on an endpoint - special for BBB devices */ 606 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 607 { 608 int result; 609 610 /* ENDPOINT_HALT = 0, so set value to 0 */ 611 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 612 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 613 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5); 614 return result; 615 } 616 617 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 618 { 619 int result, retry; 620 int dir_in; 621 int actlen, data_actlen; 622 unsigned int pipe, pipein, pipeout; 623 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1); 624 #ifdef BBB_XPORT_TRACE 625 unsigned char *ptr; 626 int index; 627 #endif 628 629 dir_in = US_DIRECTION(srb->cmd[0]); 630 631 /* COMMAND phase */ 632 debug("COMMAND phase\n"); 633 result = usb_stor_BBB_comdat(srb, us); 634 if (result < 0) { 635 debug("failed to send CBW status %ld\n", 636 us->pusb_dev->status); 637 usb_stor_BBB_reset(us); 638 return USB_STOR_TRANSPORT_FAILED; 639 } 640 if (!(us->flags & USB_READY)) 641 mdelay(5); 642 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 643 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 644 /* DATA phase + error handling */ 645 data_actlen = 0; 646 /* no data, go immediately to the STATUS phase */ 647 if (srb->datalen == 0) 648 goto st; 649 debug("DATA phase\n"); 650 if (dir_in) 651 pipe = pipein; 652 else 653 pipe = pipeout; 654 655 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 656 &data_actlen, USB_CNTL_TIMEOUT * 5); 657 /* special handling of STALL in DATA phase */ 658 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 659 debug("DATA:stall\n"); 660 /* clear the STALL on the endpoint */ 661 result = usb_stor_BBB_clear_endpt_stall(us, 662 dir_in ? us->ep_in : us->ep_out); 663 if (result >= 0) 664 /* continue on to STATUS phase */ 665 goto st; 666 } 667 if (result < 0) { 668 debug("usb_bulk_msg error status %ld\n", 669 us->pusb_dev->status); 670 usb_stor_BBB_reset(us); 671 return USB_STOR_TRANSPORT_FAILED; 672 } 673 #ifdef BBB_XPORT_TRACE 674 for (index = 0; index < data_actlen; index++) 675 printf("pdata[%d] %#x ", index, srb->pdata[index]); 676 printf("\n"); 677 #endif 678 /* STATUS phase + error handling */ 679 st: 680 retry = 0; 681 again: 682 debug("STATUS phase\n"); 683 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 684 &actlen, USB_CNTL_TIMEOUT*5); 685 686 /* special handling of STALL in STATUS phase */ 687 if ((result < 0) && (retry < 1) && 688 (us->pusb_dev->status & USB_ST_STALLED)) { 689 debug("STATUS:stall\n"); 690 /* clear the STALL on the endpoint */ 691 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 692 if (result >= 0 && (retry++ < 1)) 693 /* do a retry */ 694 goto again; 695 } 696 if (result < 0) { 697 debug("usb_bulk_msg error status %ld\n", 698 us->pusb_dev->status); 699 usb_stor_BBB_reset(us); 700 return USB_STOR_TRANSPORT_FAILED; 701 } 702 #ifdef BBB_XPORT_TRACE 703 ptr = (unsigned char *)csw; 704 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 705 printf("ptr[%d] %#x ", index, ptr[index]); 706 printf("\n"); 707 #endif 708 /* misuse pipe to get the residue */ 709 pipe = le32_to_cpu(csw->dCSWDataResidue); 710 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 711 pipe = srb->datalen - data_actlen; 712 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 713 debug("!CSWSIGNATURE\n"); 714 usb_stor_BBB_reset(us); 715 return USB_STOR_TRANSPORT_FAILED; 716 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 717 debug("!Tag\n"); 718 usb_stor_BBB_reset(us); 719 return USB_STOR_TRANSPORT_FAILED; 720 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 721 debug(">PHASE\n"); 722 usb_stor_BBB_reset(us); 723 return USB_STOR_TRANSPORT_FAILED; 724 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 725 debug("=PHASE\n"); 726 usb_stor_BBB_reset(us); 727 return USB_STOR_TRANSPORT_FAILED; 728 } else if (data_actlen > srb->datalen) { 729 debug("transferred %dB instead of %ldB\n", 730 data_actlen, srb->datalen); 731 return USB_STOR_TRANSPORT_FAILED; 732 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 733 debug("FAILED\n"); 734 return USB_STOR_TRANSPORT_FAILED; 735 } 736 737 return result; 738 } 739 740 static int usb_stor_CB_transport(ccb *srb, struct us_data *us) 741 { 742 int result, status; 743 ccb *psrb; 744 ccb reqsrb; 745 int retry, notready; 746 747 psrb = &reqsrb; 748 status = USB_STOR_TRANSPORT_GOOD; 749 retry = 0; 750 notready = 0; 751 /* issue the command */ 752 do_retry: 753 result = usb_stor_CB_comdat(srb, us); 754 debug("command / Data returned %d, status %lX\n", 755 result, us->pusb_dev->status); 756 /* if this is an CBI Protocol, get IRQ */ 757 if (us->protocol == US_PR_CBI) { 758 status = usb_stor_CBI_get_status(srb, us); 759 /* if the status is error, report it */ 760 if (status == USB_STOR_TRANSPORT_ERROR) { 761 debug(" USB CBI Command Error\n"); 762 return status; 763 } 764 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 765 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 766 if (!us->ip_data) { 767 /* if the status is good, report it */ 768 if (status == USB_STOR_TRANSPORT_GOOD) { 769 debug(" USB CBI Command Good\n"); 770 return status; 771 } 772 } 773 } 774 /* do we have to issue an auto request? */ 775 /* HERE we have to check the result */ 776 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 777 debug("ERROR %lX\n", us->pusb_dev->status); 778 us->transport_reset(us); 779 return USB_STOR_TRANSPORT_ERROR; 780 } 781 if ((us->protocol == US_PR_CBI) && 782 ((srb->cmd[0] == SCSI_REQ_SENSE) || 783 (srb->cmd[0] == SCSI_INQUIRY))) { 784 /* do not issue an autorequest after request sense */ 785 debug("No auto request and good\n"); 786 return USB_STOR_TRANSPORT_GOOD; 787 } 788 /* issue an request_sense */ 789 memset(&psrb->cmd[0], 0, 12); 790 psrb->cmd[0] = SCSI_REQ_SENSE; 791 psrb->cmd[1] = srb->lun << 5; 792 psrb->cmd[4] = 18; 793 psrb->datalen = 18; 794 psrb->pdata = &srb->sense_buf[0]; 795 psrb->cmdlen = 12; 796 /* issue the command */ 797 result = usb_stor_CB_comdat(psrb, us); 798 debug("auto request returned %d\n", result); 799 /* if this is an CBI Protocol, get IRQ */ 800 if (us->protocol == US_PR_CBI) 801 status = usb_stor_CBI_get_status(psrb, us); 802 803 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 804 debug(" AUTO REQUEST ERROR %ld\n", 805 us->pusb_dev->status); 806 return USB_STOR_TRANSPORT_ERROR; 807 } 808 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 809 srb->sense_buf[0], srb->sense_buf[2], 810 srb->sense_buf[12], srb->sense_buf[13]); 811 /* Check the auto request result */ 812 if ((srb->sense_buf[2] == 0) && 813 (srb->sense_buf[12] == 0) && 814 (srb->sense_buf[13] == 0)) { 815 /* ok, no sense */ 816 return USB_STOR_TRANSPORT_GOOD; 817 } 818 819 /* Check the auto request result */ 820 switch (srb->sense_buf[2]) { 821 case 0x01: 822 /* Recovered Error */ 823 return USB_STOR_TRANSPORT_GOOD; 824 break; 825 case 0x02: 826 /* Not Ready */ 827 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 828 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 829 " 0x%02X (NOT READY)\n", srb->cmd[0], 830 srb->sense_buf[0], srb->sense_buf[2], 831 srb->sense_buf[12], srb->sense_buf[13]); 832 return USB_STOR_TRANSPORT_FAILED; 833 } else { 834 mdelay(100); 835 goto do_retry; 836 } 837 break; 838 default: 839 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 840 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 841 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 842 srb->sense_buf[2], srb->sense_buf[12], 843 srb->sense_buf[13]); 844 return USB_STOR_TRANSPORT_FAILED; 845 } else 846 goto do_retry; 847 break; 848 } 849 return USB_STOR_TRANSPORT_FAILED; 850 } 851 852 853 static int usb_inquiry(ccb *srb, struct us_data *ss) 854 { 855 int retry, i; 856 retry = 5; 857 do { 858 memset(&srb->cmd[0], 0, 12); 859 srb->cmd[0] = SCSI_INQUIRY; 860 srb->cmd[1] = srb->lun << 5; 861 srb->cmd[4] = 36; 862 srb->datalen = 36; 863 srb->cmdlen = 12; 864 i = ss->transport(srb, ss); 865 debug("inquiry returns %d\n", i); 866 if (i == 0) 867 break; 868 } while (--retry); 869 870 if (!retry) { 871 printf("error in inquiry\n"); 872 return -1; 873 } 874 return 0; 875 } 876 877 static int usb_request_sense(ccb *srb, struct us_data *ss) 878 { 879 char *ptr; 880 881 ptr = (char *)srb->pdata; 882 memset(&srb->cmd[0], 0, 12); 883 srb->cmd[0] = SCSI_REQ_SENSE; 884 srb->cmd[1] = srb->lun << 5; 885 srb->cmd[4] = 18; 886 srb->datalen = 18; 887 srb->pdata = &srb->sense_buf[0]; 888 srb->cmdlen = 12; 889 ss->transport(srb, ss); 890 debug("Request Sense returned %02X %02X %02X\n", 891 srb->sense_buf[2], srb->sense_buf[12], 892 srb->sense_buf[13]); 893 srb->pdata = (uchar *)ptr; 894 return 0; 895 } 896 897 static int usb_test_unit_ready(ccb *srb, struct us_data *ss) 898 { 899 int retries = 10; 900 901 do { 902 memset(&srb->cmd[0], 0, 12); 903 srb->cmd[0] = SCSI_TST_U_RDY; 904 srb->cmd[1] = srb->lun << 5; 905 srb->datalen = 0; 906 srb->cmdlen = 12; 907 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) { 908 ss->flags |= USB_READY; 909 return 0; 910 } 911 usb_request_sense(srb, ss); 912 /* 913 * Check the Key Code Qualifier, if it matches 914 * "Not Ready - medium not present" 915 * (the sense Key equals 0x2 and the ASC is 0x3a) 916 * return immediately as the medium being absent won't change 917 * unless there is a user action. 918 */ 919 if ((srb->sense_buf[2] == 0x02) && 920 (srb->sense_buf[12] == 0x3a)) 921 return -1; 922 mdelay(100); 923 } while (retries--); 924 925 return -1; 926 } 927 928 static int usb_read_capacity(ccb *srb, struct us_data *ss) 929 { 930 int retry; 931 /* XXX retries */ 932 retry = 3; 933 do { 934 memset(&srb->cmd[0], 0, 12); 935 srb->cmd[0] = SCSI_RD_CAPAC; 936 srb->cmd[1] = srb->lun << 5; 937 srb->datalen = 8; 938 srb->cmdlen = 12; 939 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 940 return 0; 941 } while (retry--); 942 943 return -1; 944 } 945 946 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 947 unsigned short blocks) 948 { 949 memset(&srb->cmd[0], 0, 12); 950 srb->cmd[0] = SCSI_READ10; 951 srb->cmd[1] = srb->lun << 5; 952 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 953 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 954 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 955 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 956 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 957 srb->cmd[8] = (unsigned char) blocks & 0xff; 958 srb->cmdlen = 12; 959 debug("read10: start %lx blocks %x\n", start, blocks); 960 return ss->transport(srb, ss); 961 } 962 963 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 964 unsigned short blocks) 965 { 966 memset(&srb->cmd[0], 0, 12); 967 srb->cmd[0] = SCSI_WRITE10; 968 srb->cmd[1] = srb->lun << 5; 969 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 970 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 971 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 972 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 973 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 974 srb->cmd[8] = (unsigned char) blocks & 0xff; 975 srb->cmdlen = 12; 976 debug("write10: start %lx blocks %x\n", start, blocks); 977 return ss->transport(srb, ss); 978 } 979 980 981 #ifdef CONFIG_USB_BIN_FIXUP 982 /* 983 * Some USB storage devices queried for SCSI identification data respond with 984 * binary strings, which if output to the console freeze the terminal. The 985 * workaround is to modify the vendor and product strings read from such 986 * device with proper values (as reported by 'usb info'). 987 * 988 * Vendor and product length limits are taken from the definition of 989 * block_dev_desc_t in include/part.h. 990 */ 991 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 992 unsigned char vendor[], 993 unsigned char product[]) { 994 const unsigned char max_vendor_len = 40; 995 const unsigned char max_product_len = 20; 996 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 997 strncpy((char *)vendor, "SMSC", max_vendor_len); 998 strncpy((char *)product, "Flash Media Cntrller", 999 max_product_len); 1000 } 1001 } 1002 #endif /* CONFIG_USB_BIN_FIXUP */ 1003 1004 unsigned long usb_stor_read(int device, lbaint_t blknr, 1005 lbaint_t blkcnt, void *buffer) 1006 { 1007 lbaint_t start, blks; 1008 uintptr_t buf_addr; 1009 unsigned short smallblks; 1010 struct usb_device *dev; 1011 struct us_data *ss; 1012 int retry; 1013 ccb *srb = &usb_ccb; 1014 1015 if (blkcnt == 0) 1016 return 0; 1017 1018 device &= 0xff; 1019 /* Setup device */ 1020 debug("\nusb_read: dev %d\n", device); 1021 dev = usb_dev_desc[device].priv; 1022 if (!dev) { 1023 debug("%s: No device\n", __func__); 1024 return 0; 1025 } 1026 ss = (struct us_data *)dev->privptr; 1027 1028 usb_disable_asynch(1); /* asynch transfer not allowed */ 1029 srb->lun = usb_dev_desc[device].lun; 1030 buf_addr = (uintptr_t)buffer; 1031 start = blknr; 1032 blks = blkcnt; 1033 1034 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF 1035 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr); 1036 1037 do { 1038 /* XXX need some comment here */ 1039 retry = 2; 1040 srb->pdata = (unsigned char *)buf_addr; 1041 if (blks > USB_MAX_XFER_BLK) 1042 smallblks = USB_MAX_XFER_BLK; 1043 else 1044 smallblks = (unsigned short) blks; 1045 retry_it: 1046 if (smallblks == USB_MAX_XFER_BLK) 1047 usb_show_progress(); 1048 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1049 srb->pdata = (unsigned char *)buf_addr; 1050 if (usb_read_10(srb, ss, start, smallblks)) { 1051 debug("Read ERROR\n"); 1052 usb_request_sense(srb, ss); 1053 if (retry--) 1054 goto retry_it; 1055 blkcnt -= blks; 1056 break; 1057 } 1058 start += smallblks; 1059 blks -= smallblks; 1060 buf_addr += srb->datalen; 1061 } while (blks != 0); 1062 ss->flags &= ~USB_READY; 1063 1064 debug("usb_read: end startblk " LBAF 1065 ", blccnt %x buffer %" PRIxPTR "\n", 1066 start, smallblks, buf_addr); 1067 1068 usb_disable_asynch(0); /* asynch transfer allowed */ 1069 if (blkcnt >= USB_MAX_XFER_BLK) 1070 debug("\n"); 1071 return blkcnt; 1072 } 1073 1074 unsigned long usb_stor_write(int device, lbaint_t blknr, 1075 lbaint_t blkcnt, const void *buffer) 1076 { 1077 lbaint_t start, blks; 1078 uintptr_t buf_addr; 1079 unsigned short smallblks; 1080 struct usb_device *dev; 1081 struct us_data *ss; 1082 int retry; 1083 ccb *srb = &usb_ccb; 1084 1085 if (blkcnt == 0) 1086 return 0; 1087 1088 device &= 0xff; 1089 /* Setup device */ 1090 debug("\nusb_write: dev %d\n", device); 1091 dev = usb_dev_desc[device].priv; 1092 if (!dev) 1093 return 0; 1094 ss = (struct us_data *)dev->privptr; 1095 1096 usb_disable_asynch(1); /* asynch transfer not allowed */ 1097 1098 srb->lun = usb_dev_desc[device].lun; 1099 buf_addr = (uintptr_t)buffer; 1100 start = blknr; 1101 blks = blkcnt; 1102 1103 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF 1104 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr); 1105 1106 do { 1107 /* If write fails retry for max retry count else 1108 * return with number of blocks written successfully. 1109 */ 1110 retry = 2; 1111 srb->pdata = (unsigned char *)buf_addr; 1112 if (blks > USB_MAX_XFER_BLK) 1113 smallblks = USB_MAX_XFER_BLK; 1114 else 1115 smallblks = (unsigned short) blks; 1116 retry_it: 1117 if (smallblks == USB_MAX_XFER_BLK) 1118 usb_show_progress(); 1119 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1120 srb->pdata = (unsigned char *)buf_addr; 1121 if (usb_write_10(srb, ss, start, smallblks)) { 1122 debug("Write ERROR\n"); 1123 usb_request_sense(srb, ss); 1124 if (retry--) 1125 goto retry_it; 1126 blkcnt -= blks; 1127 break; 1128 } 1129 start += smallblks; 1130 blks -= smallblks; 1131 buf_addr += srb->datalen; 1132 } while (blks != 0); 1133 ss->flags &= ~USB_READY; 1134 1135 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %" 1136 PRIxPTR "\n", start, smallblks, buf_addr); 1137 1138 usb_disable_asynch(0); /* asynch transfer allowed */ 1139 if (blkcnt >= USB_MAX_XFER_BLK) 1140 debug("\n"); 1141 return blkcnt; 1142 1143 } 1144 1145 /* Probe to see if a new device is actually a Storage device */ 1146 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1147 struct us_data *ss) 1148 { 1149 struct usb_interface *iface; 1150 int i; 1151 struct usb_endpoint_descriptor *ep_desc; 1152 unsigned int flags = 0; 1153 1154 int protocol = 0; 1155 int subclass = 0; 1156 1157 /* let's examine the device now */ 1158 iface = &dev->config.if_desc[ifnum]; 1159 1160 #if 0 1161 /* this is the place to patch some storage devices */ 1162 debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor, 1163 dev->descriptor.idProduct); 1164 1165 if ((dev->descriptor.idVendor) == 0x066b && 1166 (dev->descriptor.idProduct) == 0x0103) { 1167 debug("patched for E-USB\n"); 1168 protocol = US_PR_CB; 1169 subclass = US_SC_UFI; /* an assumption */ 1170 } 1171 #endif 1172 1173 if (dev->descriptor.bDeviceClass != 0 || 1174 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1175 iface->desc.bInterfaceSubClass < US_SC_MIN || 1176 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1177 debug("Not mass storage\n"); 1178 /* if it's not a mass storage, we go no further */ 1179 return 0; 1180 } 1181 1182 memset(ss, 0, sizeof(struct us_data)); 1183 1184 /* At this point, we know we've got a live one */ 1185 debug("\n\nUSB Mass Storage device detected\n"); 1186 1187 /* Initialize the us_data structure with some useful info */ 1188 ss->flags = flags; 1189 ss->ifnum = ifnum; 1190 ss->pusb_dev = dev; 1191 ss->attention_done = 0; 1192 1193 /* If the device has subclass and protocol, then use that. Otherwise, 1194 * take data from the specific interface. 1195 */ 1196 if (subclass) { 1197 ss->subclass = subclass; 1198 ss->protocol = protocol; 1199 } else { 1200 ss->subclass = iface->desc.bInterfaceSubClass; 1201 ss->protocol = iface->desc.bInterfaceProtocol; 1202 } 1203 1204 /* set the handler pointers based on the protocol */ 1205 debug("Transport: "); 1206 switch (ss->protocol) { 1207 case US_PR_CB: 1208 debug("Control/Bulk\n"); 1209 ss->transport = usb_stor_CB_transport; 1210 ss->transport_reset = usb_stor_CB_reset; 1211 break; 1212 1213 case US_PR_CBI: 1214 debug("Control/Bulk/Interrupt\n"); 1215 ss->transport = usb_stor_CB_transport; 1216 ss->transport_reset = usb_stor_CB_reset; 1217 break; 1218 case US_PR_BULK: 1219 debug("Bulk/Bulk/Bulk\n"); 1220 ss->transport = usb_stor_BBB_transport; 1221 ss->transport_reset = usb_stor_BBB_reset; 1222 break; 1223 default: 1224 printf("USB Storage Transport unknown / not yet implemented\n"); 1225 return 0; 1226 break; 1227 } 1228 1229 /* 1230 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1231 * An optional interrupt is OK (necessary for CBI protocol). 1232 * We will ignore any others. 1233 */ 1234 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1235 ep_desc = &iface->ep_desc[i]; 1236 /* is it an BULK endpoint? */ 1237 if ((ep_desc->bmAttributes & 1238 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1239 if (ep_desc->bEndpointAddress & USB_DIR_IN) 1240 ss->ep_in = ep_desc->bEndpointAddress & 1241 USB_ENDPOINT_NUMBER_MASK; 1242 else 1243 ss->ep_out = 1244 ep_desc->bEndpointAddress & 1245 USB_ENDPOINT_NUMBER_MASK; 1246 } 1247 1248 /* is it an interrupt endpoint? */ 1249 if ((ep_desc->bmAttributes & 1250 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1251 ss->ep_int = ep_desc->bEndpointAddress & 1252 USB_ENDPOINT_NUMBER_MASK; 1253 ss->irqinterval = ep_desc->bInterval; 1254 } 1255 } 1256 debug("Endpoints In %d Out %d Int %d\n", 1257 ss->ep_in, ss->ep_out, ss->ep_int); 1258 1259 /* Do some basic sanity checks, and bail if we find a problem */ 1260 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1261 !ss->ep_in || !ss->ep_out || 1262 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1263 debug("Problems with device\n"); 1264 return 0; 1265 } 1266 /* set class specific stuff */ 1267 /* We only handle certain protocols. Currently, these are 1268 * the only ones. 1269 * The SFF8070 accepts the requests used in u-boot 1270 */ 1271 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1272 ss->subclass != US_SC_8070) { 1273 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1274 return 0; 1275 } 1276 if (ss->ep_int) { 1277 /* we had found an interrupt endpoint, prepare irq pipe 1278 * set up the IRQ pipe and handler 1279 */ 1280 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1281 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1282 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1283 dev->irq_handle = usb_stor_irq; 1284 } 1285 dev->privptr = (void *)ss; 1286 return 1; 1287 } 1288 1289 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1290 block_dev_desc_t *dev_desc) 1291 { 1292 unsigned char perq, modi; 1293 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2); 1294 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36); 1295 u32 capacity, blksz; 1296 ccb *pccb = &usb_ccb; 1297 1298 pccb->pdata = usb_stor_buf; 1299 1300 dev_desc->target = dev->devnum; 1301 pccb->lun = dev_desc->lun; 1302 debug(" address %d\n", dev_desc->target); 1303 1304 if (usb_inquiry(pccb, ss)) { 1305 debug("%s: usb_inquiry() failed\n", __func__); 1306 return -1; 1307 } 1308 1309 perq = usb_stor_buf[0]; 1310 modi = usb_stor_buf[1]; 1311 1312 /* 1313 * Skip unknown devices (0x1f) and enclosure service devices (0x0d), 1314 * they would not respond to test_unit_ready . 1315 */ 1316 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) { 1317 debug("%s: unknown/unsupported device\n", __func__); 1318 return 0; 1319 } 1320 if ((modi&0x80) == 0x80) { 1321 /* drive is removable */ 1322 dev_desc->removable = 1; 1323 } 1324 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8); 1325 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16); 1326 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4); 1327 dev_desc->vendor[8] = 0; 1328 dev_desc->product[16] = 0; 1329 dev_desc->revision[4] = 0; 1330 #ifdef CONFIG_USB_BIN_FIXUP 1331 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1332 (uchar *)dev_desc->product); 1333 #endif /* CONFIG_USB_BIN_FIXUP */ 1334 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1335 usb_stor_buf[3]); 1336 if (usb_test_unit_ready(pccb, ss)) { 1337 printf("Device NOT ready\n" 1338 " Request Sense returned %02X %02X %02X\n", 1339 pccb->sense_buf[2], pccb->sense_buf[12], 1340 pccb->sense_buf[13]); 1341 if (dev_desc->removable == 1) { 1342 dev_desc->type = perq; 1343 return 1; 1344 } 1345 return 0; 1346 } 1347 pccb->pdata = (unsigned char *)cap; 1348 memset(pccb->pdata, 0, 8); 1349 if (usb_read_capacity(pccb, ss) != 0) { 1350 printf("READ_CAP ERROR\n"); 1351 cap[0] = 2880; 1352 cap[1] = 0x200; 1353 } 1354 ss->flags &= ~USB_READY; 1355 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]); 1356 #if 0 1357 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1358 cap[0] >>= 16; 1359 1360 cap[0] = cpu_to_be32(cap[0]); 1361 cap[1] = cpu_to_be32(cap[1]); 1362 #endif 1363 1364 capacity = be32_to_cpu(cap[0]) + 1; 1365 blksz = be32_to_cpu(cap[1]); 1366 1367 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz); 1368 dev_desc->lba = capacity; 1369 dev_desc->blksz = blksz; 1370 dev_desc->log2blksz = LOG2(dev_desc->blksz); 1371 dev_desc->type = perq; 1372 debug(" address %d\n", dev_desc->target); 1373 debug("partype: %d\n", dev_desc->part_type); 1374 1375 init_part(dev_desc); 1376 1377 debug("partype: %d\n", dev_desc->part_type); 1378 return 1; 1379 } 1380