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 <errno.h> 37 #include <inttypes.h> 38 #include <mapmem.h> 39 #include <asm/byteorder.h> 40 #include <asm/processor.h> 41 42 #include <part.h> 43 #include <usb.h> 44 45 #undef BBB_COMDAT_TRACE 46 #undef BBB_XPORT_TRACE 47 48 #include <scsi.h> 49 /* direction table -- this indicates the direction of the data 50 * transfer for each command code -- a 1 indicates input 51 */ 52 static const unsigned char us_direction[256/8] = { 53 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77, 54 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 55 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 56 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 57 }; 58 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1) 59 60 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN))); 61 static __u32 CBWTag; 62 63 #define USB_MAX_STOR_DEV 5 64 static int usb_max_devs; /* number of highest available usb device */ 65 66 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV]; 67 68 struct us_data; 69 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data); 70 typedef int (*trans_reset)(struct us_data *data); 71 72 struct us_data { 73 struct usb_device *pusb_dev; /* this usb_device */ 74 75 unsigned int flags; /* from filter initially */ 76 # define USB_READY (1 << 0) 77 unsigned char ifnum; /* interface number */ 78 unsigned char ep_in; /* in endpoint */ 79 unsigned char ep_out; /* out ....... */ 80 unsigned char ep_int; /* interrupt . */ 81 unsigned char subclass; /* as in overview */ 82 unsigned char protocol; /* .............. */ 83 unsigned char attention_done; /* force attn on first cmd */ 84 unsigned short ip_data; /* interrupt data */ 85 int action; /* what to do */ 86 int ip_wanted; /* needed */ 87 int *irq_handle; /* for USB int requests */ 88 unsigned int irqpipe; /* pipe for release_irq */ 89 unsigned char irqmaxp; /* max packed for irq Pipe */ 90 unsigned char irqinterval; /* Intervall for IRQ Pipe */ 91 ccb *srb; /* current srb */ 92 trans_reset transport_reset; /* reset routine */ 93 trans_cmnd transport; /* transport routine */ 94 }; 95 96 #ifdef CONFIG_USB_EHCI 97 /* 98 * The U-Boot EHCI driver can handle any transfer length as long as there is 99 * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are 100 * limited to 65535 blocks. 101 */ 102 #define USB_MAX_XFER_BLK 65535 103 #else 104 #define USB_MAX_XFER_BLK 20 105 #endif 106 107 static struct us_data usb_stor[USB_MAX_STOR_DEV]; 108 109 110 #define USB_STOR_TRANSPORT_GOOD 0 111 #define USB_STOR_TRANSPORT_FAILED -1 112 #define USB_STOR_TRANSPORT_ERROR -2 113 114 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, 115 block_dev_desc_t *dev_desc); 116 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 117 struct us_data *ss); 118 unsigned long usb_stor_read(int device, lbaint_t blknr, 119 lbaint_t blkcnt, void *buffer); 120 unsigned long usb_stor_write(int device, lbaint_t blknr, 121 lbaint_t blkcnt, const void *buffer); 122 struct usb_device * usb_get_dev_index(int index); 123 void uhci_show_temp_int_td(void); 124 125 #ifdef CONFIG_PARTITIONS 126 block_dev_desc_t *usb_stor_get_dev(int index) 127 { 128 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL; 129 } 130 #endif 131 132 static void usb_show_progress(void) 133 { 134 debug("."); 135 } 136 137 /******************************************************************************* 138 * show info on storage devices; 'usb start/init' must be invoked earlier 139 * as we only retrieve structures populated during devices initialization 140 */ 141 int usb_stor_info(void) 142 { 143 int i; 144 145 if (usb_max_devs > 0) { 146 for (i = 0; i < usb_max_devs; i++) { 147 printf(" Device %d: ", i); 148 dev_print(&usb_dev_desc[i]); 149 } 150 return 0; 151 } 152 153 printf("No storage devices, perhaps not 'usb start'ed..?\n"); 154 return 1; 155 } 156 157 static unsigned int usb_get_max_lun(struct us_data *us) 158 { 159 int len; 160 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1); 161 len = usb_control_msg(us->pusb_dev, 162 usb_rcvctrlpipe(us->pusb_dev, 0), 163 US_BBB_GET_MAX_LUN, 164 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 165 0, us->ifnum, 166 result, sizeof(char), 167 USB_CNTL_TIMEOUT * 5); 168 debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result); 169 return (len > 0) ? *result : 0; 170 } 171 172 static int usb_stor_probe_device(struct usb_device *dev) 173 { 174 if (dev == NULL) 175 return -ENOENT; /* no more devices available */ 176 177 debug("\n\nProbing for storage\n"); 178 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) { 179 /* OK, it's a storage device. Iterate over its LUNs 180 * and populate `usb_dev_desc'. 181 */ 182 int lun, max_lun, start = usb_max_devs; 183 184 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 185 for (lun = 0; 186 lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; 187 lun++) { 188 struct block_dev_desc *blkdev; 189 190 blkdev = &usb_dev_desc[usb_max_devs]; 191 memset(blkdev, '\0', sizeof(block_dev_desc_t)); 192 blkdev->if_type = IF_TYPE_USB; 193 blkdev->dev = usb_max_devs; 194 blkdev->part_type = PART_TYPE_UNKNOWN; 195 blkdev->target = 0xff; 196 blkdev->type = DEV_TYPE_UNKNOWN; 197 blkdev->block_read = usb_stor_read; 198 blkdev->block_write = usb_stor_write; 199 blkdev->lun = lun; 200 blkdev->priv = dev; 201 202 if (usb_stor_get_info(dev, &usb_stor[start], 203 &usb_dev_desc[usb_max_devs]) == 204 1) { 205 usb_max_devs++; 206 debug("%s: Found device %p\n", __func__, dev); 207 } 208 } 209 } 210 211 /* if storage device */ 212 if (usb_max_devs == USB_MAX_STOR_DEV) { 213 printf("max USB Storage Device reached: %d stopping\n", 214 usb_max_devs); 215 return -ENOSPC; 216 } 217 218 return 0; 219 } 220 221 void usb_stor_reset(void) 222 { 223 usb_max_devs = 0; 224 } 225 226 /******************************************************************************* 227 * scan the usb and reports device info 228 * to the user if mode = 1 229 * returns current device or -1 if no 230 */ 231 int usb_stor_scan(int mode) 232 { 233 unsigned char i; 234 235 if (mode == 1) 236 printf(" scanning usb for storage devices... "); 237 238 usb_disable_asynch(1); /* asynch transfer not allowed */ 239 240 usb_stor_reset(); 241 for (i = 0; i < USB_MAX_DEVICE; i++) { 242 struct usb_device *dev; 243 244 dev = usb_get_dev_index(i); /* get device */ 245 debug("i=%d\n", i); 246 if (usb_stor_probe_device(dev)) 247 break; 248 } /* for */ 249 250 usb_disable_asynch(0); /* asynch transfer allowed */ 251 printf("%d Storage Device(s) found\n", usb_max_devs); 252 if (usb_max_devs > 0) 253 return 0; 254 return -1; 255 } 256 257 static int usb_stor_irq(struct usb_device *dev) 258 { 259 struct us_data *us; 260 us = (struct us_data *)dev->privptr; 261 262 if (us->ip_wanted) 263 us->ip_wanted = 0; 264 return 0; 265 } 266 267 268 #ifdef DEBUG 269 270 static void usb_show_srb(ccb *pccb) 271 { 272 int i; 273 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 274 for (i = 0; i < 12; i++) 275 printf("%02X ", pccb->cmd[i]); 276 printf("\n"); 277 } 278 279 static void display_int_status(unsigned long tmp) 280 { 281 printf("Status: %s %s %s %s %s %s %s\n", 282 (tmp & USB_ST_ACTIVE) ? "Active" : "", 283 (tmp & USB_ST_STALLED) ? "Stalled" : "", 284 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 285 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 286 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 287 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 288 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 289 } 290 #endif 291 /*********************************************************************** 292 * Data transfer routines 293 ***********************************************************************/ 294 295 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 296 { 297 int max_size; 298 int this_xfer; 299 int result; 300 int partial; 301 int maxtry; 302 int stat; 303 304 /* determine the maximum packet size for these transfers */ 305 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 306 307 /* while we have data left to transfer */ 308 while (length) { 309 310 /* calculate how long this will be -- maximum or a remainder */ 311 this_xfer = length > max_size ? max_size : length; 312 length -= this_xfer; 313 314 /* setup the retry counter */ 315 maxtry = 10; 316 317 /* set up the transfer loop */ 318 do { 319 /* transfer the data */ 320 debug("Bulk xfer 0x%lx(%d) try #%d\n", 321 (ulong)map_to_sysmem(buf), this_xfer, 322 11 - maxtry); 323 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 324 this_xfer, &partial, 325 USB_CNTL_TIMEOUT * 5); 326 debug("bulk_msg returned %d xferred %d/%d\n", 327 result, partial, this_xfer); 328 if (us->pusb_dev->status != 0) { 329 /* if we stall, we need to clear it before 330 * we go on 331 */ 332 #ifdef DEBUG 333 display_int_status(us->pusb_dev->status); 334 #endif 335 if (us->pusb_dev->status & USB_ST_STALLED) { 336 debug("stalled ->clearing endpoint" \ 337 "halt for pipe 0x%x\n", pipe); 338 stat = us->pusb_dev->status; 339 usb_clear_halt(us->pusb_dev, pipe); 340 us->pusb_dev->status = stat; 341 if (this_xfer == partial) { 342 debug("bulk transferred" \ 343 "with error %lX," \ 344 " but data ok\n", 345 us->pusb_dev->status); 346 return 0; 347 } 348 else 349 return result; 350 } 351 if (us->pusb_dev->status & USB_ST_NAK_REC) { 352 debug("Device NAKed bulk_msg\n"); 353 return result; 354 } 355 debug("bulk transferred with error"); 356 if (this_xfer == partial) { 357 debug(" %ld, but data ok\n", 358 us->pusb_dev->status); 359 return 0; 360 } 361 /* if our try counter reaches 0, bail out */ 362 debug(" %ld, data %d\n", 363 us->pusb_dev->status, partial); 364 if (!maxtry--) 365 return result; 366 } 367 /* update to show what data was transferred */ 368 this_xfer -= partial; 369 buf += partial; 370 /* continue until this transfer is done */ 371 } while (this_xfer); 372 } 373 374 /* if we get here, we're done and successful */ 375 return 0; 376 } 377 378 static int usb_stor_BBB_reset(struct us_data *us) 379 { 380 int result; 381 unsigned int pipe; 382 383 /* 384 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 385 * 386 * For Reset Recovery the host shall issue in the following order: 387 * a) a Bulk-Only Mass Storage Reset 388 * b) a Clear Feature HALT to the Bulk-In endpoint 389 * c) a Clear Feature HALT to the Bulk-Out endpoint 390 * 391 * This is done in 3 steps. 392 * 393 * If the reset doesn't succeed, the device should be port reset. 394 * 395 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 396 */ 397 debug("BBB_reset\n"); 398 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 399 US_BBB_RESET, 400 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 401 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5); 402 403 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 404 debug("RESET:stall\n"); 405 return -1; 406 } 407 408 /* long wait for reset */ 409 mdelay(150); 410 debug("BBB_reset result %d: status %lX reset\n", 411 result, us->pusb_dev->status); 412 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 413 result = usb_clear_halt(us->pusb_dev, pipe); 414 /* long wait for reset */ 415 mdelay(150); 416 debug("BBB_reset result %d: status %lX clearing IN endpoint\n", 417 result, us->pusb_dev->status); 418 /* long wait for reset */ 419 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 420 result = usb_clear_halt(us->pusb_dev, pipe); 421 mdelay(150); 422 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n", 423 result, us->pusb_dev->status); 424 debug("BBB_reset done\n"); 425 return 0; 426 } 427 428 /* FIXME: this reset function doesn't really reset the port, and it 429 * should. Actually it should probably do what it's doing here, and 430 * reset the port physically 431 */ 432 static int usb_stor_CB_reset(struct us_data *us) 433 { 434 unsigned char cmd[12]; 435 int result; 436 437 debug("CB_reset\n"); 438 memset(cmd, 0xff, sizeof(cmd)); 439 cmd[0] = SCSI_SEND_DIAG; 440 cmd[1] = 4; 441 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 442 US_CBI_ADSC, 443 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 444 0, us->ifnum, cmd, sizeof(cmd), 445 USB_CNTL_TIMEOUT * 5); 446 447 /* long wait for reset */ 448 mdelay(1500); 449 debug("CB_reset result %d: status %lX clearing endpoint halt\n", 450 result, us->pusb_dev->status); 451 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in)); 452 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out)); 453 454 debug("CB_reset done\n"); 455 return 0; 456 } 457 458 /* 459 * Set up the command for a BBB device. Note that the actual SCSI 460 * command is copied into cbw.CBWCDB. 461 */ 462 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us) 463 { 464 int result; 465 int actlen; 466 int dir_in; 467 unsigned int pipe; 468 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1); 469 470 dir_in = US_DIRECTION(srb->cmd[0]); 471 472 #ifdef BBB_COMDAT_TRACE 473 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n", 474 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, 475 srb->pdata); 476 if (srb->cmdlen) { 477 for (result = 0; result < srb->cmdlen; result++) 478 printf("cmd[%d] %#x ", result, srb->cmd[result]); 479 printf("\n"); 480 } 481 #endif 482 /* sanity checks */ 483 if (!(srb->cmdlen <= CBWCDBLENGTH)) { 484 debug("usb_stor_BBB_comdat:cmdlen too large\n"); 485 return -1; 486 } 487 488 /* always OUT to the ep */ 489 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 490 491 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE); 492 cbw->dCBWTag = cpu_to_le32(CBWTag++); 493 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen); 494 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT); 495 cbw->bCBWLUN = srb->lun; 496 cbw->bCDBLength = srb->cmdlen; 497 /* copy the command data into the CBW command data buffer */ 498 /* DST SRC LEN!!! */ 499 500 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen); 501 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE, 502 &actlen, USB_CNTL_TIMEOUT * 5); 503 if (result < 0) 504 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 505 return result; 506 } 507 508 /* FIXME: we also need a CBI_command which sets up the completion 509 * interrupt, and waits for it 510 */ 511 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us) 512 { 513 int result = 0; 514 int dir_in, retry; 515 unsigned int pipe; 516 unsigned long status; 517 518 retry = 5; 519 dir_in = US_DIRECTION(srb->cmd[0]); 520 521 if (dir_in) 522 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 523 else 524 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 525 526 while (retry--) { 527 debug("CBI gets a command: Try %d\n", 5 - retry); 528 #ifdef DEBUG 529 usb_show_srb(srb); 530 #endif 531 /* let's send the command via the control pipe */ 532 result = usb_control_msg(us->pusb_dev, 533 usb_sndctrlpipe(us->pusb_dev , 0), 534 US_CBI_ADSC, 535 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 536 0, us->ifnum, 537 srb->cmd, srb->cmdlen, 538 USB_CNTL_TIMEOUT * 5); 539 debug("CB_transport: control msg returned %d, status %lX\n", 540 result, us->pusb_dev->status); 541 /* check the return code for the command */ 542 if (result < 0) { 543 if (us->pusb_dev->status & USB_ST_STALLED) { 544 status = us->pusb_dev->status; 545 debug(" stall during command found," \ 546 " clear pipe\n"); 547 usb_clear_halt(us->pusb_dev, 548 usb_sndctrlpipe(us->pusb_dev, 0)); 549 us->pusb_dev->status = status; 550 } 551 debug(" error during command %02X" \ 552 " Stat = %lX\n", srb->cmd[0], 553 us->pusb_dev->status); 554 return result; 555 } 556 /* transfer the data payload for this command, if one exists*/ 557 558 debug("CB_transport: control msg returned %d," \ 559 " direction is %s to go 0x%lx\n", result, 560 dir_in ? "IN" : "OUT", srb->datalen); 561 if (srb->datalen) { 562 result = us_one_transfer(us, pipe, (char *)srb->pdata, 563 srb->datalen); 564 debug("CBI attempted to transfer data," \ 565 " result is %d status %lX, len %d\n", 566 result, us->pusb_dev->status, 567 us->pusb_dev->act_len); 568 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 569 break; 570 } /* if (srb->datalen) */ 571 else 572 break; 573 } 574 /* return result */ 575 576 return result; 577 } 578 579 580 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us) 581 { 582 int timeout; 583 584 us->ip_wanted = 1; 585 submit_int_msg(us->pusb_dev, us->irqpipe, 586 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 587 timeout = 1000; 588 while (timeout--) { 589 if (us->ip_wanted == 0) 590 break; 591 mdelay(10); 592 } 593 if (us->ip_wanted) { 594 printf(" Did not get interrupt on CBI\n"); 595 us->ip_wanted = 0; 596 return USB_STOR_TRANSPORT_ERROR; 597 } 598 debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n", 599 us->ip_data, us->pusb_dev->irq_act_len, 600 us->pusb_dev->irq_status); 601 /* UFI gives us ASC and ASCQ, like a request sense */ 602 if (us->subclass == US_SC_UFI) { 603 if (srb->cmd[0] == SCSI_REQ_SENSE || 604 srb->cmd[0] == SCSI_INQUIRY) 605 return USB_STOR_TRANSPORT_GOOD; /* Good */ 606 else if (us->ip_data) 607 return USB_STOR_TRANSPORT_FAILED; 608 else 609 return USB_STOR_TRANSPORT_GOOD; 610 } 611 /* otherwise, we interpret the data normally */ 612 switch (us->ip_data) { 613 case 0x0001: 614 return USB_STOR_TRANSPORT_GOOD; 615 case 0x0002: 616 return USB_STOR_TRANSPORT_FAILED; 617 default: 618 return USB_STOR_TRANSPORT_ERROR; 619 } /* switch */ 620 return USB_STOR_TRANSPORT_ERROR; 621 } 622 623 #define USB_TRANSPORT_UNKNOWN_RETRY 5 624 #define USB_TRANSPORT_NOT_READY_RETRY 10 625 626 /* clear a stall on an endpoint - special for BBB devices */ 627 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 628 { 629 int result; 630 631 /* ENDPOINT_HALT = 0, so set value to 0 */ 632 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 633 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 634 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5); 635 return result; 636 } 637 638 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 639 { 640 int result, retry; 641 int dir_in; 642 int actlen, data_actlen; 643 unsigned int pipe, pipein, pipeout; 644 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1); 645 #ifdef BBB_XPORT_TRACE 646 unsigned char *ptr; 647 int index; 648 #endif 649 650 dir_in = US_DIRECTION(srb->cmd[0]); 651 652 /* COMMAND phase */ 653 debug("COMMAND phase\n"); 654 result = usb_stor_BBB_comdat(srb, us); 655 if (result < 0) { 656 debug("failed to send CBW status %ld\n", 657 us->pusb_dev->status); 658 usb_stor_BBB_reset(us); 659 return USB_STOR_TRANSPORT_FAILED; 660 } 661 if (!(us->flags & USB_READY)) 662 mdelay(5); 663 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 664 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 665 /* DATA phase + error handling */ 666 data_actlen = 0; 667 /* no data, go immediately to the STATUS phase */ 668 if (srb->datalen == 0) 669 goto st; 670 debug("DATA phase\n"); 671 if (dir_in) 672 pipe = pipein; 673 else 674 pipe = pipeout; 675 676 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 677 &data_actlen, USB_CNTL_TIMEOUT * 5); 678 /* special handling of STALL in DATA phase */ 679 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 680 debug("DATA:stall\n"); 681 /* clear the STALL on the endpoint */ 682 result = usb_stor_BBB_clear_endpt_stall(us, 683 dir_in ? us->ep_in : us->ep_out); 684 if (result >= 0) 685 /* continue on to STATUS phase */ 686 goto st; 687 } 688 if (result < 0) { 689 debug("usb_bulk_msg error status %ld\n", 690 us->pusb_dev->status); 691 usb_stor_BBB_reset(us); 692 return USB_STOR_TRANSPORT_FAILED; 693 } 694 #ifdef BBB_XPORT_TRACE 695 for (index = 0; index < data_actlen; index++) 696 printf("pdata[%d] %#x ", index, srb->pdata[index]); 697 printf("\n"); 698 #endif 699 /* STATUS phase + error handling */ 700 st: 701 retry = 0; 702 again: 703 debug("STATUS phase\n"); 704 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 705 &actlen, USB_CNTL_TIMEOUT*5); 706 707 /* special handling of STALL in STATUS phase */ 708 if ((result < 0) && (retry < 1) && 709 (us->pusb_dev->status & USB_ST_STALLED)) { 710 debug("STATUS:stall\n"); 711 /* clear the STALL on the endpoint */ 712 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 713 if (result >= 0 && (retry++ < 1)) 714 /* do a retry */ 715 goto again; 716 } 717 if (result < 0) { 718 debug("usb_bulk_msg error status %ld\n", 719 us->pusb_dev->status); 720 usb_stor_BBB_reset(us); 721 return USB_STOR_TRANSPORT_FAILED; 722 } 723 #ifdef BBB_XPORT_TRACE 724 ptr = (unsigned char *)csw; 725 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 726 printf("ptr[%d] %#x ", index, ptr[index]); 727 printf("\n"); 728 #endif 729 /* misuse pipe to get the residue */ 730 pipe = le32_to_cpu(csw->dCSWDataResidue); 731 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 732 pipe = srb->datalen - data_actlen; 733 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 734 debug("!CSWSIGNATURE\n"); 735 usb_stor_BBB_reset(us); 736 return USB_STOR_TRANSPORT_FAILED; 737 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 738 debug("!Tag\n"); 739 usb_stor_BBB_reset(us); 740 return USB_STOR_TRANSPORT_FAILED; 741 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 742 debug(">PHASE\n"); 743 usb_stor_BBB_reset(us); 744 return USB_STOR_TRANSPORT_FAILED; 745 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 746 debug("=PHASE\n"); 747 usb_stor_BBB_reset(us); 748 return USB_STOR_TRANSPORT_FAILED; 749 } else if (data_actlen > srb->datalen) { 750 debug("transferred %dB instead of %ldB\n", 751 data_actlen, srb->datalen); 752 return USB_STOR_TRANSPORT_FAILED; 753 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 754 debug("FAILED\n"); 755 return USB_STOR_TRANSPORT_FAILED; 756 } 757 758 return result; 759 } 760 761 static int usb_stor_CB_transport(ccb *srb, struct us_data *us) 762 { 763 int result, status; 764 ccb *psrb; 765 ccb reqsrb; 766 int retry, notready; 767 768 psrb = &reqsrb; 769 status = USB_STOR_TRANSPORT_GOOD; 770 retry = 0; 771 notready = 0; 772 /* issue the command */ 773 do_retry: 774 result = usb_stor_CB_comdat(srb, us); 775 debug("command / Data returned %d, status %lX\n", 776 result, us->pusb_dev->status); 777 /* if this is an CBI Protocol, get IRQ */ 778 if (us->protocol == US_PR_CBI) { 779 status = usb_stor_CBI_get_status(srb, us); 780 /* if the status is error, report it */ 781 if (status == USB_STOR_TRANSPORT_ERROR) { 782 debug(" USB CBI Command Error\n"); 783 return status; 784 } 785 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 786 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 787 if (!us->ip_data) { 788 /* if the status is good, report it */ 789 if (status == USB_STOR_TRANSPORT_GOOD) { 790 debug(" USB CBI Command Good\n"); 791 return status; 792 } 793 } 794 } 795 /* do we have to issue an auto request? */ 796 /* HERE we have to check the result */ 797 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 798 debug("ERROR %lX\n", us->pusb_dev->status); 799 us->transport_reset(us); 800 return USB_STOR_TRANSPORT_ERROR; 801 } 802 if ((us->protocol == US_PR_CBI) && 803 ((srb->cmd[0] == SCSI_REQ_SENSE) || 804 (srb->cmd[0] == SCSI_INQUIRY))) { 805 /* do not issue an autorequest after request sense */ 806 debug("No auto request and good\n"); 807 return USB_STOR_TRANSPORT_GOOD; 808 } 809 /* issue an request_sense */ 810 memset(&psrb->cmd[0], 0, 12); 811 psrb->cmd[0] = SCSI_REQ_SENSE; 812 psrb->cmd[1] = srb->lun << 5; 813 psrb->cmd[4] = 18; 814 psrb->datalen = 18; 815 psrb->pdata = &srb->sense_buf[0]; 816 psrb->cmdlen = 12; 817 /* issue the command */ 818 result = usb_stor_CB_comdat(psrb, us); 819 debug("auto request returned %d\n", result); 820 /* if this is an CBI Protocol, get IRQ */ 821 if (us->protocol == US_PR_CBI) 822 status = usb_stor_CBI_get_status(psrb, us); 823 824 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 825 debug(" AUTO REQUEST ERROR %ld\n", 826 us->pusb_dev->status); 827 return USB_STOR_TRANSPORT_ERROR; 828 } 829 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 830 srb->sense_buf[0], srb->sense_buf[2], 831 srb->sense_buf[12], srb->sense_buf[13]); 832 /* Check the auto request result */ 833 if ((srb->sense_buf[2] == 0) && 834 (srb->sense_buf[12] == 0) && 835 (srb->sense_buf[13] == 0)) { 836 /* ok, no sense */ 837 return USB_STOR_TRANSPORT_GOOD; 838 } 839 840 /* Check the auto request result */ 841 switch (srb->sense_buf[2]) { 842 case 0x01: 843 /* Recovered Error */ 844 return USB_STOR_TRANSPORT_GOOD; 845 break; 846 case 0x02: 847 /* Not Ready */ 848 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 849 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 850 " 0x%02X (NOT READY)\n", srb->cmd[0], 851 srb->sense_buf[0], srb->sense_buf[2], 852 srb->sense_buf[12], srb->sense_buf[13]); 853 return USB_STOR_TRANSPORT_FAILED; 854 } else { 855 mdelay(100); 856 goto do_retry; 857 } 858 break; 859 default: 860 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 861 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 862 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 863 srb->sense_buf[2], srb->sense_buf[12], 864 srb->sense_buf[13]); 865 return USB_STOR_TRANSPORT_FAILED; 866 } else 867 goto do_retry; 868 break; 869 } 870 return USB_STOR_TRANSPORT_FAILED; 871 } 872 873 874 static int usb_inquiry(ccb *srb, struct us_data *ss) 875 { 876 int retry, i; 877 retry = 5; 878 do { 879 memset(&srb->cmd[0], 0, 12); 880 srb->cmd[0] = SCSI_INQUIRY; 881 srb->cmd[1] = srb->lun << 5; 882 srb->cmd[4] = 36; 883 srb->datalen = 36; 884 srb->cmdlen = 12; 885 i = ss->transport(srb, ss); 886 debug("inquiry returns %d\n", i); 887 if (i == 0) 888 break; 889 } while (--retry); 890 891 if (!retry) { 892 printf("error in inquiry\n"); 893 return -1; 894 } 895 return 0; 896 } 897 898 static int usb_request_sense(ccb *srb, struct us_data *ss) 899 { 900 char *ptr; 901 902 ptr = (char *)srb->pdata; 903 memset(&srb->cmd[0], 0, 12); 904 srb->cmd[0] = SCSI_REQ_SENSE; 905 srb->cmd[1] = srb->lun << 5; 906 srb->cmd[4] = 18; 907 srb->datalen = 18; 908 srb->pdata = &srb->sense_buf[0]; 909 srb->cmdlen = 12; 910 ss->transport(srb, ss); 911 debug("Request Sense returned %02X %02X %02X\n", 912 srb->sense_buf[2], srb->sense_buf[12], 913 srb->sense_buf[13]); 914 srb->pdata = (uchar *)ptr; 915 return 0; 916 } 917 918 static int usb_test_unit_ready(ccb *srb, struct us_data *ss) 919 { 920 int retries = 10; 921 922 do { 923 memset(&srb->cmd[0], 0, 12); 924 srb->cmd[0] = SCSI_TST_U_RDY; 925 srb->cmd[1] = srb->lun << 5; 926 srb->datalen = 0; 927 srb->cmdlen = 12; 928 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) { 929 ss->flags |= USB_READY; 930 return 0; 931 } 932 usb_request_sense(srb, ss); 933 /* 934 * Check the Key Code Qualifier, if it matches 935 * "Not Ready - medium not present" 936 * (the sense Key equals 0x2 and the ASC is 0x3a) 937 * return immediately as the medium being absent won't change 938 * unless there is a user action. 939 */ 940 if ((srb->sense_buf[2] == 0x02) && 941 (srb->sense_buf[12] == 0x3a)) 942 return -1; 943 mdelay(100); 944 } while (retries--); 945 946 return -1; 947 } 948 949 static int usb_read_capacity(ccb *srb, struct us_data *ss) 950 { 951 int retry; 952 /* XXX retries */ 953 retry = 3; 954 do { 955 memset(&srb->cmd[0], 0, 12); 956 srb->cmd[0] = SCSI_RD_CAPAC; 957 srb->cmd[1] = srb->lun << 5; 958 srb->datalen = 8; 959 srb->cmdlen = 12; 960 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 961 return 0; 962 } while (retry--); 963 964 return -1; 965 } 966 967 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 968 unsigned short blocks) 969 { 970 memset(&srb->cmd[0], 0, 12); 971 srb->cmd[0] = SCSI_READ10; 972 srb->cmd[1] = srb->lun << 5; 973 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 974 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 975 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 976 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 977 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 978 srb->cmd[8] = (unsigned char) blocks & 0xff; 979 srb->cmdlen = 12; 980 debug("read10: start %lx blocks %x\n", start, blocks); 981 return ss->transport(srb, ss); 982 } 983 984 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 985 unsigned short blocks) 986 { 987 memset(&srb->cmd[0], 0, 12); 988 srb->cmd[0] = SCSI_WRITE10; 989 srb->cmd[1] = srb->lun << 5; 990 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 991 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 992 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 993 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 994 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 995 srb->cmd[8] = (unsigned char) blocks & 0xff; 996 srb->cmdlen = 12; 997 debug("write10: start %lx blocks %x\n", start, blocks); 998 return ss->transport(srb, ss); 999 } 1000 1001 1002 #ifdef CONFIG_USB_BIN_FIXUP 1003 /* 1004 * Some USB storage devices queried for SCSI identification data respond with 1005 * binary strings, which if output to the console freeze the terminal. The 1006 * workaround is to modify the vendor and product strings read from such 1007 * device with proper values (as reported by 'usb info'). 1008 * 1009 * Vendor and product length limits are taken from the definition of 1010 * block_dev_desc_t in include/part.h. 1011 */ 1012 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1013 unsigned char vendor[], 1014 unsigned char product[]) { 1015 const unsigned char max_vendor_len = 40; 1016 const unsigned char max_product_len = 20; 1017 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1018 strncpy((char *)vendor, "SMSC", max_vendor_len); 1019 strncpy((char *)product, "Flash Media Cntrller", 1020 max_product_len); 1021 } 1022 } 1023 #endif /* CONFIG_USB_BIN_FIXUP */ 1024 1025 unsigned long usb_stor_read(int device, lbaint_t blknr, 1026 lbaint_t blkcnt, void *buffer) 1027 { 1028 lbaint_t start, blks; 1029 uintptr_t buf_addr; 1030 unsigned short smallblks; 1031 struct usb_device *dev; 1032 struct us_data *ss; 1033 int retry; 1034 ccb *srb = &usb_ccb; 1035 1036 if (blkcnt == 0) 1037 return 0; 1038 1039 device &= 0xff; 1040 /* Setup device */ 1041 debug("\nusb_read: dev %d\n", device); 1042 dev = usb_dev_desc[device].priv; 1043 if (!dev) { 1044 debug("%s: No device\n", __func__); 1045 return 0; 1046 } 1047 ss = (struct us_data *)dev->privptr; 1048 1049 usb_disable_asynch(1); /* asynch transfer not allowed */ 1050 srb->lun = usb_dev_desc[device].lun; 1051 buf_addr = (uintptr_t)buffer; 1052 start = blknr; 1053 blks = blkcnt; 1054 1055 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF 1056 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr); 1057 1058 do { 1059 /* XXX need some comment here */ 1060 retry = 2; 1061 srb->pdata = (unsigned char *)buf_addr; 1062 if (blks > USB_MAX_XFER_BLK) 1063 smallblks = USB_MAX_XFER_BLK; 1064 else 1065 smallblks = (unsigned short) blks; 1066 retry_it: 1067 if (smallblks == USB_MAX_XFER_BLK) 1068 usb_show_progress(); 1069 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1070 srb->pdata = (unsigned char *)buf_addr; 1071 if (usb_read_10(srb, ss, start, smallblks)) { 1072 debug("Read ERROR\n"); 1073 usb_request_sense(srb, ss); 1074 if (retry--) 1075 goto retry_it; 1076 blkcnt -= blks; 1077 break; 1078 } 1079 start += smallblks; 1080 blks -= smallblks; 1081 buf_addr += srb->datalen; 1082 } while (blks != 0); 1083 ss->flags &= ~USB_READY; 1084 1085 debug("usb_read: end startblk " LBAF 1086 ", blccnt %x buffer %" PRIxPTR "\n", 1087 start, smallblks, buf_addr); 1088 1089 usb_disable_asynch(0); /* asynch transfer allowed */ 1090 if (blkcnt >= USB_MAX_XFER_BLK) 1091 debug("\n"); 1092 return blkcnt; 1093 } 1094 1095 unsigned long usb_stor_write(int device, lbaint_t blknr, 1096 lbaint_t blkcnt, const void *buffer) 1097 { 1098 lbaint_t start, blks; 1099 uintptr_t buf_addr; 1100 unsigned short smallblks; 1101 struct usb_device *dev; 1102 struct us_data *ss; 1103 int retry; 1104 ccb *srb = &usb_ccb; 1105 1106 if (blkcnt == 0) 1107 return 0; 1108 1109 device &= 0xff; 1110 /* Setup device */ 1111 debug("\nusb_write: dev %d\n", device); 1112 dev = usb_dev_desc[device].priv; 1113 if (!dev) 1114 return 0; 1115 ss = (struct us_data *)dev->privptr; 1116 1117 usb_disable_asynch(1); /* asynch transfer not allowed */ 1118 1119 srb->lun = usb_dev_desc[device].lun; 1120 buf_addr = (uintptr_t)buffer; 1121 start = blknr; 1122 blks = blkcnt; 1123 1124 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF 1125 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr); 1126 1127 do { 1128 /* If write fails retry for max retry count else 1129 * return with number of blocks written successfully. 1130 */ 1131 retry = 2; 1132 srb->pdata = (unsigned char *)buf_addr; 1133 if (blks > USB_MAX_XFER_BLK) 1134 smallblks = USB_MAX_XFER_BLK; 1135 else 1136 smallblks = (unsigned short) blks; 1137 retry_it: 1138 if (smallblks == USB_MAX_XFER_BLK) 1139 usb_show_progress(); 1140 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1141 srb->pdata = (unsigned char *)buf_addr; 1142 if (usb_write_10(srb, ss, start, smallblks)) { 1143 debug("Write ERROR\n"); 1144 usb_request_sense(srb, ss); 1145 if (retry--) 1146 goto retry_it; 1147 blkcnt -= blks; 1148 break; 1149 } 1150 start += smallblks; 1151 blks -= smallblks; 1152 buf_addr += srb->datalen; 1153 } while (blks != 0); 1154 ss->flags &= ~USB_READY; 1155 1156 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %" 1157 PRIxPTR "\n", start, smallblks, buf_addr); 1158 1159 usb_disable_asynch(0); /* asynch transfer allowed */ 1160 if (blkcnt >= USB_MAX_XFER_BLK) 1161 debug("\n"); 1162 return blkcnt; 1163 1164 } 1165 1166 /* Probe to see if a new device is actually a Storage device */ 1167 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1168 struct us_data *ss) 1169 { 1170 struct usb_interface *iface; 1171 int i; 1172 struct usb_endpoint_descriptor *ep_desc; 1173 unsigned int flags = 0; 1174 1175 int protocol = 0; 1176 int subclass = 0; 1177 1178 /* let's examine the device now */ 1179 iface = &dev->config.if_desc[ifnum]; 1180 1181 #if 0 1182 /* this is the place to patch some storage devices */ 1183 debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor, 1184 dev->descriptor.idProduct); 1185 1186 if ((dev->descriptor.idVendor) == 0x066b && 1187 (dev->descriptor.idProduct) == 0x0103) { 1188 debug("patched for E-USB\n"); 1189 protocol = US_PR_CB; 1190 subclass = US_SC_UFI; /* an assumption */ 1191 } 1192 #endif 1193 1194 if (dev->descriptor.bDeviceClass != 0 || 1195 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1196 iface->desc.bInterfaceSubClass < US_SC_MIN || 1197 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1198 debug("Not mass storage\n"); 1199 /* if it's not a mass storage, we go no further */ 1200 return 0; 1201 } 1202 1203 memset(ss, 0, sizeof(struct us_data)); 1204 1205 /* At this point, we know we've got a live one */ 1206 debug("\n\nUSB Mass Storage device detected\n"); 1207 1208 /* Initialize the us_data structure with some useful info */ 1209 ss->flags = flags; 1210 ss->ifnum = ifnum; 1211 ss->pusb_dev = dev; 1212 ss->attention_done = 0; 1213 1214 /* If the device has subclass and protocol, then use that. Otherwise, 1215 * take data from the specific interface. 1216 */ 1217 if (subclass) { 1218 ss->subclass = subclass; 1219 ss->protocol = protocol; 1220 } else { 1221 ss->subclass = iface->desc.bInterfaceSubClass; 1222 ss->protocol = iface->desc.bInterfaceProtocol; 1223 } 1224 1225 /* set the handler pointers based on the protocol */ 1226 debug("Transport: "); 1227 switch (ss->protocol) { 1228 case US_PR_CB: 1229 debug("Control/Bulk\n"); 1230 ss->transport = usb_stor_CB_transport; 1231 ss->transport_reset = usb_stor_CB_reset; 1232 break; 1233 1234 case US_PR_CBI: 1235 debug("Control/Bulk/Interrupt\n"); 1236 ss->transport = usb_stor_CB_transport; 1237 ss->transport_reset = usb_stor_CB_reset; 1238 break; 1239 case US_PR_BULK: 1240 debug("Bulk/Bulk/Bulk\n"); 1241 ss->transport = usb_stor_BBB_transport; 1242 ss->transport_reset = usb_stor_BBB_reset; 1243 break; 1244 default: 1245 printf("USB Storage Transport unknown / not yet implemented\n"); 1246 return 0; 1247 break; 1248 } 1249 1250 /* 1251 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1252 * An optional interrupt is OK (necessary for CBI protocol). 1253 * We will ignore any others. 1254 */ 1255 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1256 ep_desc = &iface->ep_desc[i]; 1257 /* is it an BULK endpoint? */ 1258 if ((ep_desc->bmAttributes & 1259 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1260 if (ep_desc->bEndpointAddress & USB_DIR_IN) 1261 ss->ep_in = ep_desc->bEndpointAddress & 1262 USB_ENDPOINT_NUMBER_MASK; 1263 else 1264 ss->ep_out = 1265 ep_desc->bEndpointAddress & 1266 USB_ENDPOINT_NUMBER_MASK; 1267 } 1268 1269 /* is it an interrupt endpoint? */ 1270 if ((ep_desc->bmAttributes & 1271 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1272 ss->ep_int = ep_desc->bEndpointAddress & 1273 USB_ENDPOINT_NUMBER_MASK; 1274 ss->irqinterval = ep_desc->bInterval; 1275 } 1276 } 1277 debug("Endpoints In %d Out %d Int %d\n", 1278 ss->ep_in, ss->ep_out, ss->ep_int); 1279 1280 /* Do some basic sanity checks, and bail if we find a problem */ 1281 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1282 !ss->ep_in || !ss->ep_out || 1283 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1284 debug("Problems with device\n"); 1285 return 0; 1286 } 1287 /* set class specific stuff */ 1288 /* We only handle certain protocols. Currently, these are 1289 * the only ones. 1290 * The SFF8070 accepts the requests used in u-boot 1291 */ 1292 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1293 ss->subclass != US_SC_8070) { 1294 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1295 return 0; 1296 } 1297 if (ss->ep_int) { 1298 /* we had found an interrupt endpoint, prepare irq pipe 1299 * set up the IRQ pipe and handler 1300 */ 1301 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1302 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1303 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1304 dev->irq_handle = usb_stor_irq; 1305 } 1306 dev->privptr = (void *)ss; 1307 return 1; 1308 } 1309 1310 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1311 block_dev_desc_t *dev_desc) 1312 { 1313 unsigned char perq, modi; 1314 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2); 1315 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36); 1316 u32 capacity, blksz; 1317 ccb *pccb = &usb_ccb; 1318 1319 pccb->pdata = usb_stor_buf; 1320 1321 dev_desc->target = dev->devnum; 1322 pccb->lun = dev_desc->lun; 1323 debug(" address %d\n", dev_desc->target); 1324 1325 if (usb_inquiry(pccb, ss)) { 1326 debug("%s: usb_inquiry() failed\n", __func__); 1327 return -1; 1328 } 1329 1330 perq = usb_stor_buf[0]; 1331 modi = usb_stor_buf[1]; 1332 1333 /* 1334 * Skip unknown devices (0x1f) and enclosure service devices (0x0d), 1335 * they would not respond to test_unit_ready . 1336 */ 1337 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) { 1338 debug("%s: unknown/unsupported device\n", __func__); 1339 return 0; 1340 } 1341 if ((modi&0x80) == 0x80) { 1342 /* drive is removable */ 1343 dev_desc->removable = 1; 1344 } 1345 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8); 1346 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16); 1347 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4); 1348 dev_desc->vendor[8] = 0; 1349 dev_desc->product[16] = 0; 1350 dev_desc->revision[4] = 0; 1351 #ifdef CONFIG_USB_BIN_FIXUP 1352 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1353 (uchar *)dev_desc->product); 1354 #endif /* CONFIG_USB_BIN_FIXUP */ 1355 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1356 usb_stor_buf[3]); 1357 if (usb_test_unit_ready(pccb, ss)) { 1358 printf("Device NOT ready\n" 1359 " Request Sense returned %02X %02X %02X\n", 1360 pccb->sense_buf[2], pccb->sense_buf[12], 1361 pccb->sense_buf[13]); 1362 if (dev_desc->removable == 1) { 1363 dev_desc->type = perq; 1364 return 1; 1365 } 1366 return 0; 1367 } 1368 pccb->pdata = (unsigned char *)cap; 1369 memset(pccb->pdata, 0, 8); 1370 if (usb_read_capacity(pccb, ss) != 0) { 1371 printf("READ_CAP ERROR\n"); 1372 cap[0] = 2880; 1373 cap[1] = 0x200; 1374 } 1375 ss->flags &= ~USB_READY; 1376 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]); 1377 #if 0 1378 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1379 cap[0] >>= 16; 1380 1381 cap[0] = cpu_to_be32(cap[0]); 1382 cap[1] = cpu_to_be32(cap[1]); 1383 #endif 1384 1385 capacity = be32_to_cpu(cap[0]) + 1; 1386 blksz = be32_to_cpu(cap[1]); 1387 1388 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz); 1389 dev_desc->lba = capacity; 1390 dev_desc->blksz = blksz; 1391 dev_desc->log2blksz = LOG2(dev_desc->blksz); 1392 dev_desc->type = perq; 1393 debug(" address %d\n", dev_desc->target); 1394 debug("partype: %d\n", dev_desc->part_type); 1395 1396 init_part(dev_desc); 1397 1398 debug("partype: %d\n", dev_desc->part_type); 1399 return 1; 1400 } 1401