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 static int usb_storage_register(struct usb_device *dev, unsigned char iface) 172 { 173 int lun, max_lun, start = usb_max_devs; 174 int nb_dev = 0; 175 176 if (!usb_storage_probe(dev, iface, &usb_stor[usb_max_devs])) 177 return nb_dev; 178 179 /* 180 * OK, it's a storage device. Iterate over its LUNs 181 * and populate `usb_dev_desc'. 182 */ 183 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 184 for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; lun++) { 185 usb_dev_desc[usb_max_devs].lun = lun; 186 if (usb_stor_get_info(dev, &usb_stor[start], 187 &usb_dev_desc[usb_max_devs]) == 1) { 188 nb_dev++; 189 } 190 } 191 192 return nb_dev; 193 } 194 195 /******************************************************************************* 196 * scan the usb and reports device info 197 * to the user if mode = 1 198 * returns current device or -1 if no 199 */ 200 int usb_stor_scan(int mode) 201 { 202 unsigned char i, iface; 203 struct usb_device *dev; 204 205 if (mode == 1) 206 printf(" scanning usb for storage devices... "); 207 208 usb_disable_asynch(1); /* asynch transfer not allowed */ 209 210 for (i = 0; i < USB_MAX_STOR_DEV; i++) { 211 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t)); 212 usb_dev_desc[i].if_type = IF_TYPE_USB; 213 usb_dev_desc[i].dev = i; 214 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN; 215 usb_dev_desc[i].target = 0xff; 216 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN; 217 usb_dev_desc[i].block_read = usb_stor_read; 218 usb_dev_desc[i].block_write = usb_stor_write; 219 } 220 221 usb_max_devs = 0; 222 for (i = 0; i < USB_MAX_DEVICE; i++) { 223 dev = usb_get_dev_index(i); /* get device */ 224 debug("i=%d\n", i); 225 if (dev == NULL) 226 break; /* no more devices available */ 227 228 for (iface = 0; iface < dev->config.no_of_if; iface++) { 229 usb_max_devs += usb_storage_register(dev, iface); 230 } 231 232 /* if storage device */ 233 if (usb_max_devs == USB_MAX_STOR_DEV) { 234 printf("max USB Storage Device reached: %d stopping\n", 235 usb_max_devs); 236 break; 237 } 238 } /* for */ 239 240 usb_disable_asynch(0); /* asynch transfer allowed */ 241 printf("%d Storage Device(s) found\n", usb_max_devs); 242 if (usb_max_devs > 0) 243 return 0; 244 return -1; 245 } 246 247 static int usb_stor_irq(struct usb_device *dev) 248 { 249 struct us_data *us; 250 us = (struct us_data *)dev->privptr; 251 252 if (us->ip_wanted) 253 us->ip_wanted = 0; 254 return 0; 255 } 256 257 258 #ifdef DEBUG 259 260 static void usb_show_srb(ccb *pccb) 261 { 262 int i; 263 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 264 for (i = 0; i < 12; i++) 265 printf("%02X ", pccb->cmd[i]); 266 printf("\n"); 267 } 268 269 static void display_int_status(unsigned long tmp) 270 { 271 printf("Status: %s %s %s %s %s %s %s\n", 272 (tmp & USB_ST_ACTIVE) ? "Active" : "", 273 (tmp & USB_ST_STALLED) ? "Stalled" : "", 274 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 275 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 276 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 277 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 278 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 279 } 280 #endif 281 /*********************************************************************** 282 * Data transfer routines 283 ***********************************************************************/ 284 285 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 286 { 287 int max_size; 288 int this_xfer; 289 int result; 290 int partial; 291 int maxtry; 292 int stat; 293 294 /* determine the maximum packet size for these transfers */ 295 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 296 297 /* while we have data left to transfer */ 298 while (length) { 299 300 /* calculate how long this will be -- maximum or a remainder */ 301 this_xfer = length > max_size ? max_size : length; 302 length -= this_xfer; 303 304 /* setup the retry counter */ 305 maxtry = 10; 306 307 /* set up the transfer loop */ 308 do { 309 /* transfer the data */ 310 debug("Bulk xfer 0x%lx(%d) try #%d\n", 311 (ulong)map_to_sysmem(buf), this_xfer, 312 11 - maxtry); 313 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 314 this_xfer, &partial, 315 USB_CNTL_TIMEOUT * 5); 316 debug("bulk_msg returned %d xferred %d/%d\n", 317 result, partial, this_xfer); 318 if (us->pusb_dev->status != 0) { 319 /* if we stall, we need to clear it before 320 * we go on 321 */ 322 #ifdef DEBUG 323 display_int_status(us->pusb_dev->status); 324 #endif 325 if (us->pusb_dev->status & USB_ST_STALLED) { 326 debug("stalled ->clearing endpoint" \ 327 "halt for pipe 0x%x\n", pipe); 328 stat = us->pusb_dev->status; 329 usb_clear_halt(us->pusb_dev, pipe); 330 us->pusb_dev->status = stat; 331 if (this_xfer == partial) { 332 debug("bulk transferred" \ 333 "with error %lX," \ 334 " but data ok\n", 335 us->pusb_dev->status); 336 return 0; 337 } 338 else 339 return result; 340 } 341 if (us->pusb_dev->status & USB_ST_NAK_REC) { 342 debug("Device NAKed bulk_msg\n"); 343 return result; 344 } 345 debug("bulk transferred with error"); 346 if (this_xfer == partial) { 347 debug(" %ld, but data ok\n", 348 us->pusb_dev->status); 349 return 0; 350 } 351 /* if our try counter reaches 0, bail out */ 352 debug(" %ld, data %d\n", 353 us->pusb_dev->status, partial); 354 if (!maxtry--) 355 return result; 356 } 357 /* update to show what data was transferred */ 358 this_xfer -= partial; 359 buf += partial; 360 /* continue until this transfer is done */ 361 } while (this_xfer); 362 } 363 364 /* if we get here, we're done and successful */ 365 return 0; 366 } 367 368 static int usb_stor_BBB_reset(struct us_data *us) 369 { 370 int result; 371 unsigned int pipe; 372 373 /* 374 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 375 * 376 * For Reset Recovery the host shall issue in the following order: 377 * a) a Bulk-Only Mass Storage Reset 378 * b) a Clear Feature HALT to the Bulk-In endpoint 379 * c) a Clear Feature HALT to the Bulk-Out endpoint 380 * 381 * This is done in 3 steps. 382 * 383 * If the reset doesn't succeed, the device should be port reset. 384 * 385 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 386 */ 387 debug("BBB_reset\n"); 388 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 389 US_BBB_RESET, 390 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 391 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5); 392 393 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 394 debug("RESET:stall\n"); 395 return -1; 396 } 397 398 /* long wait for reset */ 399 mdelay(150); 400 debug("BBB_reset result %d: status %lX reset\n", 401 result, us->pusb_dev->status); 402 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 403 result = usb_clear_halt(us->pusb_dev, pipe); 404 /* long wait for reset */ 405 mdelay(150); 406 debug("BBB_reset result %d: status %lX clearing IN endpoint\n", 407 result, us->pusb_dev->status); 408 /* long wait for reset */ 409 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 410 result = usb_clear_halt(us->pusb_dev, pipe); 411 mdelay(150); 412 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n", 413 result, us->pusb_dev->status); 414 debug("BBB_reset done\n"); 415 return 0; 416 } 417 418 /* FIXME: this reset function doesn't really reset the port, and it 419 * should. Actually it should probably do what it's doing here, and 420 * reset the port physically 421 */ 422 static int usb_stor_CB_reset(struct us_data *us) 423 { 424 unsigned char cmd[12]; 425 int result; 426 427 debug("CB_reset\n"); 428 memset(cmd, 0xff, sizeof(cmd)); 429 cmd[0] = SCSI_SEND_DIAG; 430 cmd[1] = 4; 431 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 432 US_CBI_ADSC, 433 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 434 0, us->ifnum, cmd, sizeof(cmd), 435 USB_CNTL_TIMEOUT * 5); 436 437 /* long wait for reset */ 438 mdelay(1500); 439 debug("CB_reset result %d: status %lX clearing endpoint halt\n", 440 result, us->pusb_dev->status); 441 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in)); 442 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out)); 443 444 debug("CB_reset done\n"); 445 return 0; 446 } 447 448 /* 449 * Set up the command for a BBB device. Note that the actual SCSI 450 * command is copied into cbw.CBWCDB. 451 */ 452 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us) 453 { 454 int result; 455 int actlen; 456 int dir_in; 457 unsigned int pipe; 458 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1); 459 460 dir_in = US_DIRECTION(srb->cmd[0]); 461 462 #ifdef BBB_COMDAT_TRACE 463 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n", 464 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, 465 srb->pdata); 466 if (srb->cmdlen) { 467 for (result = 0; result < srb->cmdlen; result++) 468 printf("cmd[%d] %#x ", result, srb->cmd[result]); 469 printf("\n"); 470 } 471 #endif 472 /* sanity checks */ 473 if (!(srb->cmdlen <= CBWCDBLENGTH)) { 474 debug("usb_stor_BBB_comdat:cmdlen too large\n"); 475 return -1; 476 } 477 478 /* always OUT to the ep */ 479 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 480 481 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE); 482 cbw->dCBWTag = cpu_to_le32(CBWTag++); 483 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen); 484 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT); 485 cbw->bCBWLUN = srb->lun; 486 cbw->bCDBLength = srb->cmdlen; 487 /* copy the command data into the CBW command data buffer */ 488 /* DST SRC LEN!!! */ 489 490 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen); 491 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE, 492 &actlen, USB_CNTL_TIMEOUT * 5); 493 if (result < 0) 494 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 495 return result; 496 } 497 498 /* FIXME: we also need a CBI_command which sets up the completion 499 * interrupt, and waits for it 500 */ 501 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us) 502 { 503 int result = 0; 504 int dir_in, retry; 505 unsigned int pipe; 506 unsigned long status; 507 508 retry = 5; 509 dir_in = US_DIRECTION(srb->cmd[0]); 510 511 if (dir_in) 512 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 513 else 514 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 515 516 while (retry--) { 517 debug("CBI gets a command: Try %d\n", 5 - retry); 518 #ifdef DEBUG 519 usb_show_srb(srb); 520 #endif 521 /* let's send the command via the control pipe */ 522 result = usb_control_msg(us->pusb_dev, 523 usb_sndctrlpipe(us->pusb_dev , 0), 524 US_CBI_ADSC, 525 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 526 0, us->ifnum, 527 srb->cmd, srb->cmdlen, 528 USB_CNTL_TIMEOUT * 5); 529 debug("CB_transport: control msg returned %d, status %lX\n", 530 result, us->pusb_dev->status); 531 /* check the return code for the command */ 532 if (result < 0) { 533 if (us->pusb_dev->status & USB_ST_STALLED) { 534 status = us->pusb_dev->status; 535 debug(" stall during command found," \ 536 " clear pipe\n"); 537 usb_clear_halt(us->pusb_dev, 538 usb_sndctrlpipe(us->pusb_dev, 0)); 539 us->pusb_dev->status = status; 540 } 541 debug(" error during command %02X" \ 542 " Stat = %lX\n", srb->cmd[0], 543 us->pusb_dev->status); 544 return result; 545 } 546 /* transfer the data payload for this command, if one exists*/ 547 548 debug("CB_transport: control msg returned %d," \ 549 " direction is %s to go 0x%lx\n", result, 550 dir_in ? "IN" : "OUT", srb->datalen); 551 if (srb->datalen) { 552 result = us_one_transfer(us, pipe, (char *)srb->pdata, 553 srb->datalen); 554 debug("CBI attempted to transfer data," \ 555 " result is %d status %lX, len %d\n", 556 result, us->pusb_dev->status, 557 us->pusb_dev->act_len); 558 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 559 break; 560 } /* if (srb->datalen) */ 561 else 562 break; 563 } 564 /* return result */ 565 566 return result; 567 } 568 569 570 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us) 571 { 572 int timeout; 573 574 us->ip_wanted = 1; 575 submit_int_msg(us->pusb_dev, us->irqpipe, 576 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 577 timeout = 1000; 578 while (timeout--) { 579 if (us->ip_wanted == 0) 580 break; 581 mdelay(10); 582 } 583 if (us->ip_wanted) { 584 printf(" Did not get interrupt on CBI\n"); 585 us->ip_wanted = 0; 586 return USB_STOR_TRANSPORT_ERROR; 587 } 588 debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n", 589 us->ip_data, us->pusb_dev->irq_act_len, 590 us->pusb_dev->irq_status); 591 /* UFI gives us ASC and ASCQ, like a request sense */ 592 if (us->subclass == US_SC_UFI) { 593 if (srb->cmd[0] == SCSI_REQ_SENSE || 594 srb->cmd[0] == SCSI_INQUIRY) 595 return USB_STOR_TRANSPORT_GOOD; /* Good */ 596 else if (us->ip_data) 597 return USB_STOR_TRANSPORT_FAILED; 598 else 599 return USB_STOR_TRANSPORT_GOOD; 600 } 601 /* otherwise, we interpret the data normally */ 602 switch (us->ip_data) { 603 case 0x0001: 604 return USB_STOR_TRANSPORT_GOOD; 605 case 0x0002: 606 return USB_STOR_TRANSPORT_FAILED; 607 default: 608 return USB_STOR_TRANSPORT_ERROR; 609 } /* switch */ 610 return USB_STOR_TRANSPORT_ERROR; 611 } 612 613 #define USB_TRANSPORT_UNKNOWN_RETRY 5 614 #define USB_TRANSPORT_NOT_READY_RETRY 10 615 616 /* clear a stall on an endpoint - special for BBB devices */ 617 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 618 { 619 int result; 620 621 /* ENDPOINT_HALT = 0, so set value to 0 */ 622 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 623 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 624 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5); 625 return result; 626 } 627 628 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 629 { 630 int result, retry; 631 int dir_in; 632 int actlen, data_actlen; 633 unsigned int pipe, pipein, pipeout; 634 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1); 635 #ifdef BBB_XPORT_TRACE 636 unsigned char *ptr; 637 int index; 638 #endif 639 640 dir_in = US_DIRECTION(srb->cmd[0]); 641 642 /* COMMAND phase */ 643 debug("COMMAND phase\n"); 644 result = usb_stor_BBB_comdat(srb, us); 645 if (result < 0) { 646 debug("failed to send CBW status %ld\n", 647 us->pusb_dev->status); 648 usb_stor_BBB_reset(us); 649 return USB_STOR_TRANSPORT_FAILED; 650 } 651 if (!(us->flags & USB_READY)) 652 mdelay(5); 653 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 654 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 655 /* DATA phase + error handling */ 656 data_actlen = 0; 657 /* no data, go immediately to the STATUS phase */ 658 if (srb->datalen == 0) 659 goto st; 660 debug("DATA phase\n"); 661 if (dir_in) 662 pipe = pipein; 663 else 664 pipe = pipeout; 665 666 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 667 &data_actlen, USB_CNTL_TIMEOUT * 5); 668 /* special handling of STALL in DATA phase */ 669 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 670 debug("DATA:stall\n"); 671 /* clear the STALL on the endpoint */ 672 result = usb_stor_BBB_clear_endpt_stall(us, 673 dir_in ? us->ep_in : us->ep_out); 674 if (result >= 0) 675 /* continue on to STATUS phase */ 676 goto st; 677 } 678 if (result < 0) { 679 debug("usb_bulk_msg error status %ld\n", 680 us->pusb_dev->status); 681 usb_stor_BBB_reset(us); 682 return USB_STOR_TRANSPORT_FAILED; 683 } 684 #ifdef BBB_XPORT_TRACE 685 for (index = 0; index < data_actlen; index++) 686 printf("pdata[%d] %#x ", index, srb->pdata[index]); 687 printf("\n"); 688 #endif 689 /* STATUS phase + error handling */ 690 st: 691 retry = 0; 692 again: 693 debug("STATUS phase\n"); 694 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 695 &actlen, USB_CNTL_TIMEOUT*5); 696 697 /* special handling of STALL in STATUS phase */ 698 if ((result < 0) && (retry < 1) && 699 (us->pusb_dev->status & USB_ST_STALLED)) { 700 debug("STATUS:stall\n"); 701 /* clear the STALL on the endpoint */ 702 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 703 if (result >= 0 && (retry++ < 1)) 704 /* do a retry */ 705 goto again; 706 } 707 if (result < 0) { 708 debug("usb_bulk_msg error status %ld\n", 709 us->pusb_dev->status); 710 usb_stor_BBB_reset(us); 711 return USB_STOR_TRANSPORT_FAILED; 712 } 713 #ifdef BBB_XPORT_TRACE 714 ptr = (unsigned char *)csw; 715 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 716 printf("ptr[%d] %#x ", index, ptr[index]); 717 printf("\n"); 718 #endif 719 /* misuse pipe to get the residue */ 720 pipe = le32_to_cpu(csw->dCSWDataResidue); 721 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 722 pipe = srb->datalen - data_actlen; 723 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 724 debug("!CSWSIGNATURE\n"); 725 usb_stor_BBB_reset(us); 726 return USB_STOR_TRANSPORT_FAILED; 727 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 728 debug("!Tag\n"); 729 usb_stor_BBB_reset(us); 730 return USB_STOR_TRANSPORT_FAILED; 731 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 732 debug(">PHASE\n"); 733 usb_stor_BBB_reset(us); 734 return USB_STOR_TRANSPORT_FAILED; 735 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 736 debug("=PHASE\n"); 737 usb_stor_BBB_reset(us); 738 return USB_STOR_TRANSPORT_FAILED; 739 } else if (data_actlen > srb->datalen) { 740 debug("transferred %dB instead of %ldB\n", 741 data_actlen, srb->datalen); 742 return USB_STOR_TRANSPORT_FAILED; 743 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 744 debug("FAILED\n"); 745 return USB_STOR_TRANSPORT_FAILED; 746 } 747 748 return result; 749 } 750 751 static int usb_stor_CB_transport(ccb *srb, struct us_data *us) 752 { 753 int result, status; 754 ccb *psrb; 755 ccb reqsrb; 756 int retry, notready; 757 758 psrb = &reqsrb; 759 status = USB_STOR_TRANSPORT_GOOD; 760 retry = 0; 761 notready = 0; 762 /* issue the command */ 763 do_retry: 764 result = usb_stor_CB_comdat(srb, us); 765 debug("command / Data returned %d, status %lX\n", 766 result, us->pusb_dev->status); 767 /* if this is an CBI Protocol, get IRQ */ 768 if (us->protocol == US_PR_CBI) { 769 status = usb_stor_CBI_get_status(srb, us); 770 /* if the status is error, report it */ 771 if (status == USB_STOR_TRANSPORT_ERROR) { 772 debug(" USB CBI Command Error\n"); 773 return status; 774 } 775 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 776 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 777 if (!us->ip_data) { 778 /* if the status is good, report it */ 779 if (status == USB_STOR_TRANSPORT_GOOD) { 780 debug(" USB CBI Command Good\n"); 781 return status; 782 } 783 } 784 } 785 /* do we have to issue an auto request? */ 786 /* HERE we have to check the result */ 787 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 788 debug("ERROR %lX\n", us->pusb_dev->status); 789 us->transport_reset(us); 790 return USB_STOR_TRANSPORT_ERROR; 791 } 792 if ((us->protocol == US_PR_CBI) && 793 ((srb->cmd[0] == SCSI_REQ_SENSE) || 794 (srb->cmd[0] == SCSI_INQUIRY))) { 795 /* do not issue an autorequest after request sense */ 796 debug("No auto request and good\n"); 797 return USB_STOR_TRANSPORT_GOOD; 798 } 799 /* issue an request_sense */ 800 memset(&psrb->cmd[0], 0, 12); 801 psrb->cmd[0] = SCSI_REQ_SENSE; 802 psrb->cmd[1] = srb->lun << 5; 803 psrb->cmd[4] = 18; 804 psrb->datalen = 18; 805 psrb->pdata = &srb->sense_buf[0]; 806 psrb->cmdlen = 12; 807 /* issue the command */ 808 result = usb_stor_CB_comdat(psrb, us); 809 debug("auto request returned %d\n", result); 810 /* if this is an CBI Protocol, get IRQ */ 811 if (us->protocol == US_PR_CBI) 812 status = usb_stor_CBI_get_status(psrb, us); 813 814 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 815 debug(" AUTO REQUEST ERROR %ld\n", 816 us->pusb_dev->status); 817 return USB_STOR_TRANSPORT_ERROR; 818 } 819 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 820 srb->sense_buf[0], srb->sense_buf[2], 821 srb->sense_buf[12], srb->sense_buf[13]); 822 /* Check the auto request result */ 823 if ((srb->sense_buf[2] == 0) && 824 (srb->sense_buf[12] == 0) && 825 (srb->sense_buf[13] == 0)) { 826 /* ok, no sense */ 827 return USB_STOR_TRANSPORT_GOOD; 828 } 829 830 /* Check the auto request result */ 831 switch (srb->sense_buf[2]) { 832 case 0x01: 833 /* Recovered Error */ 834 return USB_STOR_TRANSPORT_GOOD; 835 break; 836 case 0x02: 837 /* Not Ready */ 838 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 839 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 840 " 0x%02X (NOT READY)\n", srb->cmd[0], 841 srb->sense_buf[0], srb->sense_buf[2], 842 srb->sense_buf[12], srb->sense_buf[13]); 843 return USB_STOR_TRANSPORT_FAILED; 844 } else { 845 mdelay(100); 846 goto do_retry; 847 } 848 break; 849 default: 850 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 851 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 852 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 853 srb->sense_buf[2], srb->sense_buf[12], 854 srb->sense_buf[13]); 855 return USB_STOR_TRANSPORT_FAILED; 856 } else 857 goto do_retry; 858 break; 859 } 860 return USB_STOR_TRANSPORT_FAILED; 861 } 862 863 864 static int usb_inquiry(ccb *srb, struct us_data *ss) 865 { 866 int retry, i; 867 retry = 5; 868 do { 869 memset(&srb->cmd[0], 0, 12); 870 srb->cmd[0] = SCSI_INQUIRY; 871 srb->cmd[1] = srb->lun << 5; 872 srb->cmd[4] = 36; 873 srb->datalen = 36; 874 srb->cmdlen = 12; 875 i = ss->transport(srb, ss); 876 debug("inquiry returns %d\n", i); 877 if (i == 0) 878 break; 879 } while (--retry); 880 881 if (!retry) { 882 printf("error in inquiry\n"); 883 return -1; 884 } 885 return 0; 886 } 887 888 static int usb_request_sense(ccb *srb, struct us_data *ss) 889 { 890 char *ptr; 891 892 ptr = (char *)srb->pdata; 893 memset(&srb->cmd[0], 0, 12); 894 srb->cmd[0] = SCSI_REQ_SENSE; 895 srb->cmd[1] = srb->lun << 5; 896 srb->cmd[4] = 18; 897 srb->datalen = 18; 898 srb->pdata = &srb->sense_buf[0]; 899 srb->cmdlen = 12; 900 ss->transport(srb, ss); 901 debug("Request Sense returned %02X %02X %02X\n", 902 srb->sense_buf[2], srb->sense_buf[12], 903 srb->sense_buf[13]); 904 srb->pdata = (uchar *)ptr; 905 return 0; 906 } 907 908 static int usb_test_unit_ready(ccb *srb, struct us_data *ss) 909 { 910 int retries = 10; 911 912 do { 913 memset(&srb->cmd[0], 0, 12); 914 srb->cmd[0] = SCSI_TST_U_RDY; 915 srb->cmd[1] = srb->lun << 5; 916 srb->datalen = 0; 917 srb->cmdlen = 12; 918 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) { 919 ss->flags |= USB_READY; 920 return 0; 921 } 922 usb_request_sense(srb, ss); 923 /* 924 * Check the Key Code Qualifier, if it matches 925 * "Not Ready - medium not present" 926 * (the sense Key equals 0x2 and the ASC is 0x3a) 927 * return immediately as the medium being absent won't change 928 * unless there is a user action. 929 */ 930 if ((srb->sense_buf[2] == 0x02) && 931 (srb->sense_buf[12] == 0x3a)) 932 return -1; 933 mdelay(100); 934 } while (retries--); 935 936 return -1; 937 } 938 939 static int usb_read_capacity(ccb *srb, struct us_data *ss) 940 { 941 int retry; 942 /* XXX retries */ 943 retry = 3; 944 do { 945 memset(&srb->cmd[0], 0, 12); 946 srb->cmd[0] = SCSI_RD_CAPAC; 947 srb->cmd[1] = srb->lun << 5; 948 srb->datalen = 8; 949 srb->cmdlen = 12; 950 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 951 return 0; 952 } while (retry--); 953 954 return -1; 955 } 956 957 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 958 unsigned short blocks) 959 { 960 memset(&srb->cmd[0], 0, 12); 961 srb->cmd[0] = SCSI_READ10; 962 srb->cmd[1] = srb->lun << 5; 963 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 964 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 965 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 966 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 967 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 968 srb->cmd[8] = (unsigned char) blocks & 0xff; 969 srb->cmdlen = 12; 970 debug("read10: start %lx blocks %x\n", start, blocks); 971 return ss->transport(srb, ss); 972 } 973 974 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 975 unsigned short blocks) 976 { 977 memset(&srb->cmd[0], 0, 12); 978 srb->cmd[0] = SCSI_WRITE10; 979 srb->cmd[1] = srb->lun << 5; 980 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 981 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 982 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 983 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 984 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 985 srb->cmd[8] = (unsigned char) blocks & 0xff; 986 srb->cmdlen = 12; 987 debug("write10: start %lx blocks %x\n", start, blocks); 988 return ss->transport(srb, ss); 989 } 990 991 992 #ifdef CONFIG_USB_BIN_FIXUP 993 /* 994 * Some USB storage devices queried for SCSI identification data respond with 995 * binary strings, which if output to the console freeze the terminal. The 996 * workaround is to modify the vendor and product strings read from such 997 * device with proper values (as reported by 'usb info'). 998 * 999 * Vendor and product length limits are taken from the definition of 1000 * block_dev_desc_t in include/part.h. 1001 */ 1002 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1003 unsigned char vendor[], 1004 unsigned char product[]) { 1005 const unsigned char max_vendor_len = 40; 1006 const unsigned char max_product_len = 20; 1007 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1008 strncpy((char *)vendor, "SMSC", max_vendor_len); 1009 strncpy((char *)product, "Flash Media Cntrller", 1010 max_product_len); 1011 } 1012 } 1013 #endif /* CONFIG_USB_BIN_FIXUP */ 1014 1015 unsigned long usb_stor_read(int device, lbaint_t blknr, 1016 lbaint_t blkcnt, void *buffer) 1017 { 1018 lbaint_t start, blks; 1019 uintptr_t buf_addr; 1020 unsigned short smallblks; 1021 struct usb_device *dev; 1022 struct us_data *ss; 1023 int retry; 1024 ccb *srb = &usb_ccb; 1025 1026 if (blkcnt == 0) 1027 return 0; 1028 1029 device &= 0xff; 1030 /* Setup device */ 1031 debug("\nusb_read: dev %d\n", device); 1032 dev = usb_dev_desc[device].priv; 1033 if (!dev) { 1034 debug("%s: No device\n", __func__); 1035 return 0; 1036 } 1037 ss = (struct us_data *)dev->privptr; 1038 1039 usb_disable_asynch(1); /* asynch transfer not allowed */ 1040 srb->lun = usb_dev_desc[device].lun; 1041 buf_addr = (uintptr_t)buffer; 1042 start = blknr; 1043 blks = blkcnt; 1044 1045 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF 1046 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr); 1047 1048 do { 1049 /* XXX need some comment here */ 1050 retry = 2; 1051 srb->pdata = (unsigned char *)buf_addr; 1052 if (blks > USB_MAX_XFER_BLK) 1053 smallblks = USB_MAX_XFER_BLK; 1054 else 1055 smallblks = (unsigned short) blks; 1056 retry_it: 1057 if (smallblks == USB_MAX_XFER_BLK) 1058 usb_show_progress(); 1059 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1060 srb->pdata = (unsigned char *)buf_addr; 1061 if (usb_read_10(srb, ss, start, smallblks)) { 1062 debug("Read ERROR\n"); 1063 usb_request_sense(srb, ss); 1064 if (retry--) 1065 goto retry_it; 1066 blkcnt -= blks; 1067 break; 1068 } 1069 start += smallblks; 1070 blks -= smallblks; 1071 buf_addr += srb->datalen; 1072 } while (blks != 0); 1073 ss->flags &= ~USB_READY; 1074 1075 debug("usb_read: end startblk " LBAF 1076 ", blccnt %x buffer %" PRIxPTR "\n", 1077 start, smallblks, buf_addr); 1078 1079 usb_disable_asynch(0); /* asynch transfer allowed */ 1080 if (blkcnt >= USB_MAX_XFER_BLK) 1081 debug("\n"); 1082 return blkcnt; 1083 } 1084 1085 unsigned long usb_stor_write(int device, lbaint_t blknr, 1086 lbaint_t blkcnt, const void *buffer) 1087 { 1088 lbaint_t start, blks; 1089 uintptr_t buf_addr; 1090 unsigned short smallblks; 1091 struct usb_device *dev; 1092 struct us_data *ss; 1093 int retry; 1094 ccb *srb = &usb_ccb; 1095 1096 if (blkcnt == 0) 1097 return 0; 1098 1099 device &= 0xff; 1100 /* Setup device */ 1101 debug("\nusb_write: dev %d\n", device); 1102 dev = usb_dev_desc[device].priv; 1103 if (!dev) 1104 return 0; 1105 ss = (struct us_data *)dev->privptr; 1106 1107 usb_disable_asynch(1); /* asynch transfer not allowed */ 1108 1109 srb->lun = usb_dev_desc[device].lun; 1110 buf_addr = (uintptr_t)buffer; 1111 start = blknr; 1112 blks = blkcnt; 1113 1114 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF 1115 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr); 1116 1117 do { 1118 /* If write fails retry for max retry count else 1119 * return with number of blocks written successfully. 1120 */ 1121 retry = 2; 1122 srb->pdata = (unsigned char *)buf_addr; 1123 if (blks > USB_MAX_XFER_BLK) 1124 smallblks = USB_MAX_XFER_BLK; 1125 else 1126 smallblks = (unsigned short) blks; 1127 retry_it: 1128 if (smallblks == USB_MAX_XFER_BLK) 1129 usb_show_progress(); 1130 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1131 srb->pdata = (unsigned char *)buf_addr; 1132 if (usb_write_10(srb, ss, start, smallblks)) { 1133 debug("Write ERROR\n"); 1134 usb_request_sense(srb, ss); 1135 if (retry--) 1136 goto retry_it; 1137 blkcnt -= blks; 1138 break; 1139 } 1140 start += smallblks; 1141 blks -= smallblks; 1142 buf_addr += srb->datalen; 1143 } while (blks != 0); 1144 ss->flags &= ~USB_READY; 1145 1146 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %" 1147 PRIxPTR "\n", start, smallblks, buf_addr); 1148 1149 usb_disable_asynch(0); /* asynch transfer allowed */ 1150 if (blkcnt >= USB_MAX_XFER_BLK) 1151 debug("\n"); 1152 return blkcnt; 1153 1154 } 1155 1156 /* Probe to see if a new device is actually a Storage device */ 1157 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1158 struct us_data *ss) 1159 { 1160 struct usb_interface *iface; 1161 int i; 1162 struct usb_endpoint_descriptor *ep_desc; 1163 unsigned int flags = 0; 1164 1165 int protocol = 0; 1166 int subclass = 0; 1167 1168 /* let's examine the device now */ 1169 iface = &dev->config.if_desc[ifnum]; 1170 1171 #if 0 1172 /* this is the place to patch some storage devices */ 1173 debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor, 1174 dev->descriptor.idProduct); 1175 1176 if ((dev->descriptor.idVendor) == 0x066b && 1177 (dev->descriptor.idProduct) == 0x0103) { 1178 debug("patched for E-USB\n"); 1179 protocol = US_PR_CB; 1180 subclass = US_SC_UFI; /* an assumption */ 1181 } 1182 #endif 1183 1184 if (dev->descriptor.bDeviceClass != 0 || 1185 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1186 iface->desc.bInterfaceSubClass < US_SC_MIN || 1187 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1188 debug("Not mass storage\n"); 1189 /* if it's not a mass storage, we go no further */ 1190 return 0; 1191 } 1192 1193 memset(ss, 0, sizeof(struct us_data)); 1194 1195 /* At this point, we know we've got a live one */ 1196 debug("\n\nUSB Mass Storage device detected\n"); 1197 1198 /* Initialize the us_data structure with some useful info */ 1199 ss->flags = flags; 1200 ss->ifnum = ifnum; 1201 ss->pusb_dev = dev; 1202 ss->attention_done = 0; 1203 1204 /* If the device has subclass and protocol, then use that. Otherwise, 1205 * take data from the specific interface. 1206 */ 1207 if (subclass) { 1208 ss->subclass = subclass; 1209 ss->protocol = protocol; 1210 } else { 1211 ss->subclass = iface->desc.bInterfaceSubClass; 1212 ss->protocol = iface->desc.bInterfaceProtocol; 1213 } 1214 1215 /* set the handler pointers based on the protocol */ 1216 debug("Transport: "); 1217 switch (ss->protocol) { 1218 case US_PR_CB: 1219 debug("Control/Bulk\n"); 1220 ss->transport = usb_stor_CB_transport; 1221 ss->transport_reset = usb_stor_CB_reset; 1222 break; 1223 1224 case US_PR_CBI: 1225 debug("Control/Bulk/Interrupt\n"); 1226 ss->transport = usb_stor_CB_transport; 1227 ss->transport_reset = usb_stor_CB_reset; 1228 break; 1229 case US_PR_BULK: 1230 debug("Bulk/Bulk/Bulk\n"); 1231 ss->transport = usb_stor_BBB_transport; 1232 ss->transport_reset = usb_stor_BBB_reset; 1233 break; 1234 default: 1235 printf("USB Storage Transport unknown / not yet implemented\n"); 1236 return 0; 1237 break; 1238 } 1239 1240 /* 1241 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1242 * An optional interrupt is OK (necessary for CBI protocol). 1243 * We will ignore any others. 1244 */ 1245 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1246 ep_desc = &iface->ep_desc[i]; 1247 /* is it an BULK endpoint? */ 1248 if ((ep_desc->bmAttributes & 1249 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1250 if (ep_desc->bEndpointAddress & USB_DIR_IN) 1251 ss->ep_in = ep_desc->bEndpointAddress & 1252 USB_ENDPOINT_NUMBER_MASK; 1253 else 1254 ss->ep_out = 1255 ep_desc->bEndpointAddress & 1256 USB_ENDPOINT_NUMBER_MASK; 1257 } 1258 1259 /* is it an interrupt endpoint? */ 1260 if ((ep_desc->bmAttributes & 1261 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1262 ss->ep_int = ep_desc->bEndpointAddress & 1263 USB_ENDPOINT_NUMBER_MASK; 1264 ss->irqinterval = ep_desc->bInterval; 1265 } 1266 } 1267 debug("Endpoints In %d Out %d Int %d\n", 1268 ss->ep_in, ss->ep_out, ss->ep_int); 1269 1270 /* Do some basic sanity checks, and bail if we find a problem */ 1271 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1272 !ss->ep_in || !ss->ep_out || 1273 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1274 debug("Problems with device\n"); 1275 return 0; 1276 } 1277 /* set class specific stuff */ 1278 /* We only handle certain protocols. Currently, these are 1279 * the only ones. 1280 * The SFF8070 accepts the requests used in u-boot 1281 */ 1282 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1283 ss->subclass != US_SC_8070) { 1284 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1285 return 0; 1286 } 1287 if (ss->ep_int) { 1288 /* we had found an interrupt endpoint, prepare irq pipe 1289 * set up the IRQ pipe and handler 1290 */ 1291 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1292 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1293 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1294 dev->irq_handle = usb_stor_irq; 1295 } 1296 dev->privptr = (void *)ss; 1297 return 1; 1298 } 1299 1300 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1301 block_dev_desc_t *dev_desc) 1302 { 1303 unsigned char perq, modi; 1304 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2); 1305 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36); 1306 u32 capacity, blksz; 1307 ccb *pccb = &usb_ccb; 1308 1309 pccb->pdata = usb_stor_buf; 1310 1311 dev_desc->target = dev->devnum; 1312 pccb->lun = dev_desc->lun; 1313 debug(" address %d\n", dev_desc->target); 1314 1315 if (usb_inquiry(pccb, ss)) { 1316 debug("%s: usb_inquiry() failed\n", __func__); 1317 return -1; 1318 } 1319 1320 perq = usb_stor_buf[0]; 1321 modi = usb_stor_buf[1]; 1322 1323 /* 1324 * Skip unknown devices (0x1f) and enclosure service devices (0x0d), 1325 * they would not respond to test_unit_ready . 1326 */ 1327 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) { 1328 debug("%s: unknown/unsupported device\n", __func__); 1329 return 0; 1330 } 1331 if ((modi&0x80) == 0x80) { 1332 /* drive is removable */ 1333 dev_desc->removable = 1; 1334 } 1335 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8); 1336 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16); 1337 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4); 1338 dev_desc->vendor[8] = 0; 1339 dev_desc->product[16] = 0; 1340 dev_desc->revision[4] = 0; 1341 #ifdef CONFIG_USB_BIN_FIXUP 1342 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1343 (uchar *)dev_desc->product); 1344 #endif /* CONFIG_USB_BIN_FIXUP */ 1345 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1346 usb_stor_buf[3]); 1347 if (usb_test_unit_ready(pccb, ss)) { 1348 printf("Device NOT ready\n" 1349 " Request Sense returned %02X %02X %02X\n", 1350 pccb->sense_buf[2], pccb->sense_buf[12], 1351 pccb->sense_buf[13]); 1352 if (dev_desc->removable == 1) { 1353 dev_desc->type = perq; 1354 return 1; 1355 } 1356 return 0; 1357 } 1358 pccb->pdata = (unsigned char *)cap; 1359 memset(pccb->pdata, 0, 8); 1360 if (usb_read_capacity(pccb, ss) != 0) { 1361 printf("READ_CAP ERROR\n"); 1362 cap[0] = 2880; 1363 cap[1] = 0x200; 1364 } 1365 ss->flags &= ~USB_READY; 1366 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]); 1367 #if 0 1368 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1369 cap[0] >>= 16; 1370 1371 cap[0] = cpu_to_be32(cap[0]); 1372 cap[1] = cpu_to_be32(cap[1]); 1373 #endif 1374 1375 capacity = be32_to_cpu(cap[0]) + 1; 1376 blksz = be32_to_cpu(cap[1]); 1377 1378 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz); 1379 dev_desc->lba = capacity; 1380 dev_desc->blksz = blksz; 1381 dev_desc->log2blksz = LOG2(dev_desc->blksz); 1382 dev_desc->type = perq; 1383 debug(" address %d\n", dev_desc->target); 1384 debug("partype: %d\n", dev_desc->part_type); 1385 1386 init_part(dev_desc); 1387 1388 debug("partype: %d\n", dev_desc->part_type); 1389 return 1; 1390 } 1391