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 * Driver model conversion: 13 * (C) Copyright 2015 Google, Inc 14 * 15 * For BBB support (C) Copyright 2003 16 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de> 17 * 18 * BBB support based on /sys/dev/usb/umass.c from 19 * FreeBSD. 20 * 21 * SPDX-License-Identifier: GPL-2.0+ 22 */ 23 24 /* Note: 25 * Currently only the CBI transport protocoll has been implemented, and it 26 * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB 27 * transport protocoll may work as well. 28 */ 29 /* 30 * New Note: 31 * Support for USB Mass Storage Devices (BBB) has been added. It has 32 * only been tested with USB memory sticks. 33 */ 34 35 36 #include <common.h> 37 #include <command.h> 38 #include <dm.h> 39 #include <errno.h> 40 #include <inttypes.h> 41 #include <mapmem.h> 42 #include <memalign.h> 43 #include <asm/byteorder.h> 44 #include <asm/processor.h> 45 #include <dm/device-internal.h> 46 #include <dm/lists.h> 47 48 #include <part.h> 49 #include <usb.h> 50 51 #undef BBB_COMDAT_TRACE 52 #undef BBB_XPORT_TRACE 53 54 #include <scsi.h> 55 /* direction table -- this indicates the direction of the data 56 * transfer for each command code -- a 1 indicates input 57 */ 58 static const unsigned char us_direction[256/8] = { 59 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77, 60 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 61 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 62 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 63 }; 64 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1) 65 66 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN))); 67 static __u32 CBWTag; 68 69 static int usb_max_devs; /* number of highest available usb device */ 70 71 #ifndef CONFIG_BLK 72 static struct blk_desc usb_dev_desc[USB_MAX_STOR_DEV]; 73 #endif 74 75 struct us_data; 76 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data); 77 typedef int (*trans_reset)(struct us_data *data); 78 79 struct us_data { 80 struct usb_device *pusb_dev; /* this usb_device */ 81 82 unsigned int flags; /* from filter initially */ 83 # define USB_READY (1 << 0) 84 unsigned char ifnum; /* interface number */ 85 unsigned char ep_in; /* in endpoint */ 86 unsigned char ep_out; /* out ....... */ 87 unsigned char ep_int; /* interrupt . */ 88 unsigned char subclass; /* as in overview */ 89 unsigned char protocol; /* .............. */ 90 unsigned char attention_done; /* force attn on first cmd */ 91 unsigned short ip_data; /* interrupt data */ 92 int action; /* what to do */ 93 int ip_wanted; /* needed */ 94 int *irq_handle; /* for USB int requests */ 95 unsigned int irqpipe; /* pipe for release_irq */ 96 unsigned char irqmaxp; /* max packed for irq Pipe */ 97 unsigned char irqinterval; /* Intervall for IRQ Pipe */ 98 ccb *srb; /* current srb */ 99 trans_reset transport_reset; /* reset routine */ 100 trans_cmnd transport; /* transport routine */ 101 }; 102 103 #ifdef CONFIG_USB_EHCI 104 /* 105 * The U-Boot EHCI driver can handle any transfer length as long as there is 106 * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are 107 * limited to 65535 blocks. 108 */ 109 #define USB_MAX_XFER_BLK 65535 110 #else 111 #define USB_MAX_XFER_BLK 20 112 #endif 113 114 #ifndef CONFIG_BLK 115 static struct us_data usb_stor[USB_MAX_STOR_DEV]; 116 #endif 117 118 #define USB_STOR_TRANSPORT_GOOD 0 119 #define USB_STOR_TRANSPORT_FAILED -1 120 #define USB_STOR_TRANSPORT_ERROR -2 121 122 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, 123 struct blk_desc *dev_desc); 124 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 125 struct us_data *ss); 126 #ifdef CONFIG_BLK 127 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr, 128 lbaint_t blkcnt, void *buffer); 129 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr, 130 lbaint_t blkcnt, const void *buffer); 131 #else 132 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr, 133 lbaint_t blkcnt, void *buffer); 134 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr, 135 lbaint_t blkcnt, const void *buffer); 136 #endif 137 void uhci_show_temp_int_td(void); 138 139 static void usb_show_progress(void) 140 { 141 debug("."); 142 } 143 144 /******************************************************************************* 145 * show info on storage devices; 'usb start/init' must be invoked earlier 146 * as we only retrieve structures populated during devices initialization 147 */ 148 int usb_stor_info(void) 149 { 150 int count = 0; 151 #ifdef CONFIG_BLK 152 struct udevice *dev; 153 154 for (blk_first_device(IF_TYPE_USB, &dev); 155 dev; 156 blk_next_device(&dev)) { 157 struct blk_desc *desc = dev_get_uclass_platdata(dev); 158 159 printf(" Device %d: ", desc->devnum); 160 dev_print(desc); 161 count++; 162 } 163 #else 164 int i; 165 166 if (usb_max_devs > 0) { 167 for (i = 0; i < usb_max_devs; i++) { 168 printf(" Device %d: ", i); 169 dev_print(&usb_dev_desc[i]); 170 } 171 return 0; 172 } 173 #endif 174 if (!count) { 175 printf("No storage devices, perhaps not 'usb start'ed..?\n"); 176 return 1; 177 } 178 179 return 0; 180 } 181 182 static unsigned int usb_get_max_lun(struct us_data *us) 183 { 184 int len; 185 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1); 186 len = usb_control_msg(us->pusb_dev, 187 usb_rcvctrlpipe(us->pusb_dev, 0), 188 US_BBB_GET_MAX_LUN, 189 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 190 0, us->ifnum, 191 result, sizeof(char), 192 USB_CNTL_TIMEOUT * 5); 193 debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result); 194 return (len > 0) ? *result : 0; 195 } 196 197 static int usb_stor_probe_device(struct usb_device *udev) 198 { 199 int lun, max_lun; 200 201 #ifdef CONFIG_BLK 202 struct us_data *data; 203 int ret; 204 #else 205 int start; 206 207 if (udev == NULL) 208 return -ENOENT; /* no more devices available */ 209 #endif 210 211 debug("\n\nProbing for storage\n"); 212 #ifdef CONFIG_BLK 213 /* 214 * We store the us_data in the mass storage device's platdata. It 215 * is shared by all LUNs (block devices) attached to this mass storage 216 * device. 217 */ 218 data = dev_get_platdata(udev->dev); 219 if (!usb_storage_probe(udev, 0, data)) 220 return 0; 221 max_lun = usb_get_max_lun(data); 222 for (lun = 0; lun <= max_lun; lun++) { 223 struct blk_desc *blkdev; 224 struct udevice *dev; 225 char str[10]; 226 227 snprintf(str, sizeof(str), "lun%d", lun); 228 ret = blk_create_devicef(udev->dev, "usb_storage_blk", str, 229 IF_TYPE_USB, usb_max_devs, 512, 0, 230 &dev); 231 if (ret) { 232 debug("Cannot bind driver\n"); 233 return ret; 234 } 235 236 blkdev = dev_get_uclass_platdata(dev); 237 blkdev->target = 0xff; 238 blkdev->lun = lun; 239 240 ret = usb_stor_get_info(udev, data, blkdev); 241 if (ret == 1) 242 ret = blk_prepare_device(dev); 243 if (!ret) { 244 usb_max_devs++; 245 debug("%s: Found device %p\n", __func__, udev); 246 } else { 247 debug("usb_stor_get_info: Invalid device\n"); 248 ret = device_unbind(dev); 249 if (ret) 250 return ret; 251 } 252 } 253 #else 254 /* We don't have space to even probe if we hit the maximum */ 255 if (usb_max_devs == USB_MAX_STOR_DEV) { 256 printf("max USB Storage Device reached: %d stopping\n", 257 usb_max_devs); 258 return -ENOSPC; 259 } 260 261 if (!usb_storage_probe(udev, 0, &usb_stor[usb_max_devs])) 262 return 0; 263 264 /* 265 * OK, it's a storage device. Iterate over its LUNs and populate 266 * usb_dev_desc' 267 */ 268 start = usb_max_devs; 269 270 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 271 for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; 272 lun++) { 273 struct blk_desc *blkdev; 274 275 blkdev = &usb_dev_desc[usb_max_devs]; 276 memset(blkdev, '\0', sizeof(struct blk_desc)); 277 blkdev->if_type = IF_TYPE_USB; 278 blkdev->devnum = usb_max_devs; 279 blkdev->part_type = PART_TYPE_UNKNOWN; 280 blkdev->target = 0xff; 281 blkdev->type = DEV_TYPE_UNKNOWN; 282 blkdev->block_read = usb_stor_read; 283 blkdev->block_write = usb_stor_write; 284 blkdev->lun = lun; 285 blkdev->priv = udev; 286 287 if (usb_stor_get_info(udev, &usb_stor[start], 288 &usb_dev_desc[usb_max_devs]) == 1) { 289 debug("partype: %d\n", blkdev->part_type); 290 part_init(blkdev); 291 debug("partype: %d\n", blkdev->part_type); 292 usb_max_devs++; 293 debug("%s: Found device %p\n", __func__, udev); 294 } 295 } 296 #endif 297 298 return 0; 299 } 300 301 void usb_stor_reset(void) 302 { 303 usb_max_devs = 0; 304 } 305 306 #ifndef CONFIG_DM_USB 307 /******************************************************************************* 308 * scan the usb and reports device info 309 * to the user if mode = 1 310 * returns current device or -1 if no 311 */ 312 int usb_stor_scan(int mode) 313 { 314 unsigned char i; 315 316 if (mode == 1) 317 printf(" scanning usb for storage devices... "); 318 319 usb_disable_asynch(1); /* asynch transfer not allowed */ 320 321 usb_stor_reset(); 322 for (i = 0; i < USB_MAX_DEVICE; i++) { 323 struct usb_device *dev; 324 325 dev = usb_get_dev_index(i); /* get device */ 326 debug("i=%d\n", i); 327 if (usb_stor_probe_device(dev)) 328 break; 329 } /* for */ 330 331 usb_disable_asynch(0); /* asynch transfer allowed */ 332 printf("%d Storage Device(s) found\n", usb_max_devs); 333 if (usb_max_devs > 0) 334 return 0; 335 return -1; 336 } 337 #endif 338 339 static int usb_stor_irq(struct usb_device *dev) 340 { 341 struct us_data *us; 342 us = (struct us_data *)dev->privptr; 343 344 if (us->ip_wanted) 345 us->ip_wanted = 0; 346 return 0; 347 } 348 349 350 #ifdef DEBUG 351 352 static void usb_show_srb(ccb *pccb) 353 { 354 int i; 355 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 356 for (i = 0; i < 12; i++) 357 printf("%02X ", pccb->cmd[i]); 358 printf("\n"); 359 } 360 361 static void display_int_status(unsigned long tmp) 362 { 363 printf("Status: %s %s %s %s %s %s %s\n", 364 (tmp & USB_ST_ACTIVE) ? "Active" : "", 365 (tmp & USB_ST_STALLED) ? "Stalled" : "", 366 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 367 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 368 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 369 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 370 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 371 } 372 #endif 373 /*********************************************************************** 374 * Data transfer routines 375 ***********************************************************************/ 376 377 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 378 { 379 int max_size; 380 int this_xfer; 381 int result; 382 int partial; 383 int maxtry; 384 int stat; 385 386 /* determine the maximum packet size for these transfers */ 387 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 388 389 /* while we have data left to transfer */ 390 while (length) { 391 392 /* calculate how long this will be -- maximum or a remainder */ 393 this_xfer = length > max_size ? max_size : length; 394 length -= this_xfer; 395 396 /* setup the retry counter */ 397 maxtry = 10; 398 399 /* set up the transfer loop */ 400 do { 401 /* transfer the data */ 402 debug("Bulk xfer 0x%lx(%d) try #%d\n", 403 (ulong)map_to_sysmem(buf), this_xfer, 404 11 - maxtry); 405 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 406 this_xfer, &partial, 407 USB_CNTL_TIMEOUT * 5); 408 debug("bulk_msg returned %d xferred %d/%d\n", 409 result, partial, this_xfer); 410 if (us->pusb_dev->status != 0) { 411 /* if we stall, we need to clear it before 412 * we go on 413 */ 414 #ifdef DEBUG 415 display_int_status(us->pusb_dev->status); 416 #endif 417 if (us->pusb_dev->status & USB_ST_STALLED) { 418 debug("stalled ->clearing endpoint" \ 419 "halt for pipe 0x%x\n", pipe); 420 stat = us->pusb_dev->status; 421 usb_clear_halt(us->pusb_dev, pipe); 422 us->pusb_dev->status = stat; 423 if (this_xfer == partial) { 424 debug("bulk transferred" \ 425 "with error %lX," \ 426 " but data ok\n", 427 us->pusb_dev->status); 428 return 0; 429 } 430 else 431 return result; 432 } 433 if (us->pusb_dev->status & USB_ST_NAK_REC) { 434 debug("Device NAKed bulk_msg\n"); 435 return result; 436 } 437 debug("bulk transferred with error"); 438 if (this_xfer == partial) { 439 debug(" %ld, but data ok\n", 440 us->pusb_dev->status); 441 return 0; 442 } 443 /* if our try counter reaches 0, bail out */ 444 debug(" %ld, data %d\n", 445 us->pusb_dev->status, partial); 446 if (!maxtry--) 447 return result; 448 } 449 /* update to show what data was transferred */ 450 this_xfer -= partial; 451 buf += partial; 452 /* continue until this transfer is done */ 453 } while (this_xfer); 454 } 455 456 /* if we get here, we're done and successful */ 457 return 0; 458 } 459 460 static int usb_stor_BBB_reset(struct us_data *us) 461 { 462 int result; 463 unsigned int pipe; 464 465 /* 466 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 467 * 468 * For Reset Recovery the host shall issue in the following order: 469 * a) a Bulk-Only Mass Storage Reset 470 * b) a Clear Feature HALT to the Bulk-In endpoint 471 * c) a Clear Feature HALT to the Bulk-Out endpoint 472 * 473 * This is done in 3 steps. 474 * 475 * If the reset doesn't succeed, the device should be port reset. 476 * 477 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 478 */ 479 debug("BBB_reset\n"); 480 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 481 US_BBB_RESET, 482 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 483 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5); 484 485 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 486 debug("RESET:stall\n"); 487 return -1; 488 } 489 490 /* long wait for reset */ 491 mdelay(150); 492 debug("BBB_reset result %d: status %lX reset\n", 493 result, us->pusb_dev->status); 494 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 495 result = usb_clear_halt(us->pusb_dev, pipe); 496 /* long wait for reset */ 497 mdelay(150); 498 debug("BBB_reset result %d: status %lX clearing IN endpoint\n", 499 result, us->pusb_dev->status); 500 /* long wait for reset */ 501 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 502 result = usb_clear_halt(us->pusb_dev, pipe); 503 mdelay(150); 504 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n", 505 result, us->pusb_dev->status); 506 debug("BBB_reset done\n"); 507 return 0; 508 } 509 510 /* FIXME: this reset function doesn't really reset the port, and it 511 * should. Actually it should probably do what it's doing here, and 512 * reset the port physically 513 */ 514 static int usb_stor_CB_reset(struct us_data *us) 515 { 516 unsigned char cmd[12]; 517 int result; 518 519 debug("CB_reset\n"); 520 memset(cmd, 0xff, sizeof(cmd)); 521 cmd[0] = SCSI_SEND_DIAG; 522 cmd[1] = 4; 523 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 524 US_CBI_ADSC, 525 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 526 0, us->ifnum, cmd, sizeof(cmd), 527 USB_CNTL_TIMEOUT * 5); 528 529 /* long wait for reset */ 530 mdelay(1500); 531 debug("CB_reset result %d: status %lX clearing endpoint halt\n", 532 result, us->pusb_dev->status); 533 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in)); 534 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out)); 535 536 debug("CB_reset done\n"); 537 return 0; 538 } 539 540 /* 541 * Set up the command for a BBB device. Note that the actual SCSI 542 * command is copied into cbw.CBWCDB. 543 */ 544 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us) 545 { 546 int result; 547 int actlen; 548 int dir_in; 549 unsigned int pipe; 550 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1); 551 552 dir_in = US_DIRECTION(srb->cmd[0]); 553 554 #ifdef BBB_COMDAT_TRACE 555 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n", 556 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, 557 srb->pdata); 558 if (srb->cmdlen) { 559 for (result = 0; result < srb->cmdlen; result++) 560 printf("cmd[%d] %#x ", result, srb->cmd[result]); 561 printf("\n"); 562 } 563 #endif 564 /* sanity checks */ 565 if (!(srb->cmdlen <= CBWCDBLENGTH)) { 566 debug("usb_stor_BBB_comdat:cmdlen too large\n"); 567 return -1; 568 } 569 570 /* always OUT to the ep */ 571 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 572 573 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE); 574 cbw->dCBWTag = cpu_to_le32(CBWTag++); 575 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen); 576 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT); 577 cbw->bCBWLUN = srb->lun; 578 cbw->bCDBLength = srb->cmdlen; 579 /* copy the command data into the CBW command data buffer */ 580 /* DST SRC LEN!!! */ 581 582 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen); 583 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE, 584 &actlen, USB_CNTL_TIMEOUT * 5); 585 if (result < 0) 586 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 587 return result; 588 } 589 590 /* FIXME: we also need a CBI_command which sets up the completion 591 * interrupt, and waits for it 592 */ 593 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us) 594 { 595 int result = 0; 596 int dir_in, retry; 597 unsigned int pipe; 598 unsigned long status; 599 600 retry = 5; 601 dir_in = US_DIRECTION(srb->cmd[0]); 602 603 if (dir_in) 604 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 605 else 606 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 607 608 while (retry--) { 609 debug("CBI gets a command: Try %d\n", 5 - retry); 610 #ifdef DEBUG 611 usb_show_srb(srb); 612 #endif 613 /* let's send the command via the control pipe */ 614 result = usb_control_msg(us->pusb_dev, 615 usb_sndctrlpipe(us->pusb_dev , 0), 616 US_CBI_ADSC, 617 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 618 0, us->ifnum, 619 srb->cmd, srb->cmdlen, 620 USB_CNTL_TIMEOUT * 5); 621 debug("CB_transport: control msg returned %d, status %lX\n", 622 result, us->pusb_dev->status); 623 /* check the return code for the command */ 624 if (result < 0) { 625 if (us->pusb_dev->status & USB_ST_STALLED) { 626 status = us->pusb_dev->status; 627 debug(" stall during command found," \ 628 " clear pipe\n"); 629 usb_clear_halt(us->pusb_dev, 630 usb_sndctrlpipe(us->pusb_dev, 0)); 631 us->pusb_dev->status = status; 632 } 633 debug(" error during command %02X" \ 634 " Stat = %lX\n", srb->cmd[0], 635 us->pusb_dev->status); 636 return result; 637 } 638 /* transfer the data payload for this command, if one exists*/ 639 640 debug("CB_transport: control msg returned %d," \ 641 " direction is %s to go 0x%lx\n", result, 642 dir_in ? "IN" : "OUT", srb->datalen); 643 if (srb->datalen) { 644 result = us_one_transfer(us, pipe, (char *)srb->pdata, 645 srb->datalen); 646 debug("CBI attempted to transfer data," \ 647 " result is %d status %lX, len %d\n", 648 result, us->pusb_dev->status, 649 us->pusb_dev->act_len); 650 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 651 break; 652 } /* if (srb->datalen) */ 653 else 654 break; 655 } 656 /* return result */ 657 658 return result; 659 } 660 661 662 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us) 663 { 664 int timeout; 665 666 us->ip_wanted = 1; 667 submit_int_msg(us->pusb_dev, us->irqpipe, 668 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 669 timeout = 1000; 670 while (timeout--) { 671 if (us->ip_wanted == 0) 672 break; 673 mdelay(10); 674 } 675 if (us->ip_wanted) { 676 printf(" Did not get interrupt on CBI\n"); 677 us->ip_wanted = 0; 678 return USB_STOR_TRANSPORT_ERROR; 679 } 680 debug("Got interrupt data 0x%x, transferred %d status 0x%lX\n", 681 us->ip_data, us->pusb_dev->irq_act_len, 682 us->pusb_dev->irq_status); 683 /* UFI gives us ASC and ASCQ, like a request sense */ 684 if (us->subclass == US_SC_UFI) { 685 if (srb->cmd[0] == SCSI_REQ_SENSE || 686 srb->cmd[0] == SCSI_INQUIRY) 687 return USB_STOR_TRANSPORT_GOOD; /* Good */ 688 else if (us->ip_data) 689 return USB_STOR_TRANSPORT_FAILED; 690 else 691 return USB_STOR_TRANSPORT_GOOD; 692 } 693 /* otherwise, we interpret the data normally */ 694 switch (us->ip_data) { 695 case 0x0001: 696 return USB_STOR_TRANSPORT_GOOD; 697 case 0x0002: 698 return USB_STOR_TRANSPORT_FAILED; 699 default: 700 return USB_STOR_TRANSPORT_ERROR; 701 } /* switch */ 702 return USB_STOR_TRANSPORT_ERROR; 703 } 704 705 #define USB_TRANSPORT_UNKNOWN_RETRY 5 706 #define USB_TRANSPORT_NOT_READY_RETRY 10 707 708 /* clear a stall on an endpoint - special for BBB devices */ 709 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 710 { 711 int result; 712 713 /* ENDPOINT_HALT = 0, so set value to 0 */ 714 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 715 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 716 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5); 717 return result; 718 } 719 720 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 721 { 722 int result, retry; 723 int dir_in; 724 int actlen, data_actlen; 725 unsigned int pipe, pipein, pipeout; 726 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1); 727 #ifdef BBB_XPORT_TRACE 728 unsigned char *ptr; 729 int index; 730 #endif 731 732 dir_in = US_DIRECTION(srb->cmd[0]); 733 734 /* COMMAND phase */ 735 debug("COMMAND phase\n"); 736 result = usb_stor_BBB_comdat(srb, us); 737 if (result < 0) { 738 debug("failed to send CBW status %ld\n", 739 us->pusb_dev->status); 740 usb_stor_BBB_reset(us); 741 return USB_STOR_TRANSPORT_FAILED; 742 } 743 if (!(us->flags & USB_READY)) 744 mdelay(5); 745 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 746 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 747 /* DATA phase + error handling */ 748 data_actlen = 0; 749 /* no data, go immediately to the STATUS phase */ 750 if (srb->datalen == 0) 751 goto st; 752 debug("DATA phase\n"); 753 if (dir_in) 754 pipe = pipein; 755 else 756 pipe = pipeout; 757 758 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 759 &data_actlen, USB_CNTL_TIMEOUT * 5); 760 /* special handling of STALL in DATA phase */ 761 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 762 debug("DATA:stall\n"); 763 /* clear the STALL on the endpoint */ 764 result = usb_stor_BBB_clear_endpt_stall(us, 765 dir_in ? us->ep_in : us->ep_out); 766 if (result >= 0) 767 /* continue on to STATUS phase */ 768 goto st; 769 } 770 if (result < 0) { 771 debug("usb_bulk_msg error status %ld\n", 772 us->pusb_dev->status); 773 usb_stor_BBB_reset(us); 774 return USB_STOR_TRANSPORT_FAILED; 775 } 776 #ifdef BBB_XPORT_TRACE 777 for (index = 0; index < data_actlen; index++) 778 printf("pdata[%d] %#x ", index, srb->pdata[index]); 779 printf("\n"); 780 #endif 781 /* STATUS phase + error handling */ 782 st: 783 retry = 0; 784 again: 785 debug("STATUS phase\n"); 786 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 787 &actlen, USB_CNTL_TIMEOUT*5); 788 789 /* special handling of STALL in STATUS phase */ 790 if ((result < 0) && (retry < 1) && 791 (us->pusb_dev->status & USB_ST_STALLED)) { 792 debug("STATUS:stall\n"); 793 /* clear the STALL on the endpoint */ 794 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 795 if (result >= 0 && (retry++ < 1)) 796 /* do a retry */ 797 goto again; 798 } 799 if (result < 0) { 800 debug("usb_bulk_msg error status %ld\n", 801 us->pusb_dev->status); 802 usb_stor_BBB_reset(us); 803 return USB_STOR_TRANSPORT_FAILED; 804 } 805 #ifdef BBB_XPORT_TRACE 806 ptr = (unsigned char *)csw; 807 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 808 printf("ptr[%d] %#x ", index, ptr[index]); 809 printf("\n"); 810 #endif 811 /* misuse pipe to get the residue */ 812 pipe = le32_to_cpu(csw->dCSWDataResidue); 813 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 814 pipe = srb->datalen - data_actlen; 815 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 816 debug("!CSWSIGNATURE\n"); 817 usb_stor_BBB_reset(us); 818 return USB_STOR_TRANSPORT_FAILED; 819 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 820 debug("!Tag\n"); 821 usb_stor_BBB_reset(us); 822 return USB_STOR_TRANSPORT_FAILED; 823 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 824 debug(">PHASE\n"); 825 usb_stor_BBB_reset(us); 826 return USB_STOR_TRANSPORT_FAILED; 827 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 828 debug("=PHASE\n"); 829 usb_stor_BBB_reset(us); 830 return USB_STOR_TRANSPORT_FAILED; 831 } else if (data_actlen > srb->datalen) { 832 debug("transferred %dB instead of %ldB\n", 833 data_actlen, srb->datalen); 834 return USB_STOR_TRANSPORT_FAILED; 835 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 836 debug("FAILED\n"); 837 return USB_STOR_TRANSPORT_FAILED; 838 } 839 840 return result; 841 } 842 843 static int usb_stor_CB_transport(ccb *srb, struct us_data *us) 844 { 845 int result, status; 846 ccb *psrb; 847 ccb reqsrb; 848 int retry, notready; 849 850 psrb = &reqsrb; 851 status = USB_STOR_TRANSPORT_GOOD; 852 retry = 0; 853 notready = 0; 854 /* issue the command */ 855 do_retry: 856 result = usb_stor_CB_comdat(srb, us); 857 debug("command / Data returned %d, status %lX\n", 858 result, us->pusb_dev->status); 859 /* if this is an CBI Protocol, get IRQ */ 860 if (us->protocol == US_PR_CBI) { 861 status = usb_stor_CBI_get_status(srb, us); 862 /* if the status is error, report it */ 863 if (status == USB_STOR_TRANSPORT_ERROR) { 864 debug(" USB CBI Command Error\n"); 865 return status; 866 } 867 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 868 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 869 if (!us->ip_data) { 870 /* if the status is good, report it */ 871 if (status == USB_STOR_TRANSPORT_GOOD) { 872 debug(" USB CBI Command Good\n"); 873 return status; 874 } 875 } 876 } 877 /* do we have to issue an auto request? */ 878 /* HERE we have to check the result */ 879 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 880 debug("ERROR %lX\n", us->pusb_dev->status); 881 us->transport_reset(us); 882 return USB_STOR_TRANSPORT_ERROR; 883 } 884 if ((us->protocol == US_PR_CBI) && 885 ((srb->cmd[0] == SCSI_REQ_SENSE) || 886 (srb->cmd[0] == SCSI_INQUIRY))) { 887 /* do not issue an autorequest after request sense */ 888 debug("No auto request and good\n"); 889 return USB_STOR_TRANSPORT_GOOD; 890 } 891 /* issue an request_sense */ 892 memset(&psrb->cmd[0], 0, 12); 893 psrb->cmd[0] = SCSI_REQ_SENSE; 894 psrb->cmd[1] = srb->lun << 5; 895 psrb->cmd[4] = 18; 896 psrb->datalen = 18; 897 psrb->pdata = &srb->sense_buf[0]; 898 psrb->cmdlen = 12; 899 /* issue the command */ 900 result = usb_stor_CB_comdat(psrb, us); 901 debug("auto request returned %d\n", result); 902 /* if this is an CBI Protocol, get IRQ */ 903 if (us->protocol == US_PR_CBI) 904 status = usb_stor_CBI_get_status(psrb, us); 905 906 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 907 debug(" AUTO REQUEST ERROR %ld\n", 908 us->pusb_dev->status); 909 return USB_STOR_TRANSPORT_ERROR; 910 } 911 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 912 srb->sense_buf[0], srb->sense_buf[2], 913 srb->sense_buf[12], srb->sense_buf[13]); 914 /* Check the auto request result */ 915 if ((srb->sense_buf[2] == 0) && 916 (srb->sense_buf[12] == 0) && 917 (srb->sense_buf[13] == 0)) { 918 /* ok, no sense */ 919 return USB_STOR_TRANSPORT_GOOD; 920 } 921 922 /* Check the auto request result */ 923 switch (srb->sense_buf[2]) { 924 case 0x01: 925 /* Recovered Error */ 926 return USB_STOR_TRANSPORT_GOOD; 927 break; 928 case 0x02: 929 /* Not Ready */ 930 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 931 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 932 " 0x%02X (NOT READY)\n", srb->cmd[0], 933 srb->sense_buf[0], srb->sense_buf[2], 934 srb->sense_buf[12], srb->sense_buf[13]); 935 return USB_STOR_TRANSPORT_FAILED; 936 } else { 937 mdelay(100); 938 goto do_retry; 939 } 940 break; 941 default: 942 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 943 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 944 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 945 srb->sense_buf[2], srb->sense_buf[12], 946 srb->sense_buf[13]); 947 return USB_STOR_TRANSPORT_FAILED; 948 } else 949 goto do_retry; 950 break; 951 } 952 return USB_STOR_TRANSPORT_FAILED; 953 } 954 955 956 static int usb_inquiry(ccb *srb, struct us_data *ss) 957 { 958 int retry, i; 959 retry = 5; 960 do { 961 memset(&srb->cmd[0], 0, 12); 962 srb->cmd[0] = SCSI_INQUIRY; 963 srb->cmd[1] = srb->lun << 5; 964 srb->cmd[4] = 36; 965 srb->datalen = 36; 966 srb->cmdlen = 12; 967 i = ss->transport(srb, ss); 968 debug("inquiry returns %d\n", i); 969 if (i == 0) 970 break; 971 } while (--retry); 972 973 if (!retry) { 974 printf("error in inquiry\n"); 975 return -1; 976 } 977 return 0; 978 } 979 980 static int usb_request_sense(ccb *srb, struct us_data *ss) 981 { 982 char *ptr; 983 984 ptr = (char *)srb->pdata; 985 memset(&srb->cmd[0], 0, 12); 986 srb->cmd[0] = SCSI_REQ_SENSE; 987 srb->cmd[1] = srb->lun << 5; 988 srb->cmd[4] = 18; 989 srb->datalen = 18; 990 srb->pdata = &srb->sense_buf[0]; 991 srb->cmdlen = 12; 992 ss->transport(srb, ss); 993 debug("Request Sense returned %02X %02X %02X\n", 994 srb->sense_buf[2], srb->sense_buf[12], 995 srb->sense_buf[13]); 996 srb->pdata = (uchar *)ptr; 997 return 0; 998 } 999 1000 static int usb_test_unit_ready(ccb *srb, struct us_data *ss) 1001 { 1002 int retries = 10; 1003 1004 do { 1005 memset(&srb->cmd[0], 0, 12); 1006 srb->cmd[0] = SCSI_TST_U_RDY; 1007 srb->cmd[1] = srb->lun << 5; 1008 srb->datalen = 0; 1009 srb->cmdlen = 12; 1010 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) { 1011 ss->flags |= USB_READY; 1012 return 0; 1013 } 1014 usb_request_sense(srb, ss); 1015 /* 1016 * Check the Key Code Qualifier, if it matches 1017 * "Not Ready - medium not present" 1018 * (the sense Key equals 0x2 and the ASC is 0x3a) 1019 * return immediately as the medium being absent won't change 1020 * unless there is a user action. 1021 */ 1022 if ((srb->sense_buf[2] == 0x02) && 1023 (srb->sense_buf[12] == 0x3a)) 1024 return -1; 1025 mdelay(100); 1026 } while (retries--); 1027 1028 return -1; 1029 } 1030 1031 static int usb_read_capacity(ccb *srb, struct us_data *ss) 1032 { 1033 int retry; 1034 /* XXX retries */ 1035 retry = 3; 1036 do { 1037 memset(&srb->cmd[0], 0, 12); 1038 srb->cmd[0] = SCSI_RD_CAPAC; 1039 srb->cmd[1] = srb->lun << 5; 1040 srb->datalen = 8; 1041 srb->cmdlen = 12; 1042 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 1043 return 0; 1044 } while (retry--); 1045 1046 return -1; 1047 } 1048 1049 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 1050 unsigned short blocks) 1051 { 1052 memset(&srb->cmd[0], 0, 12); 1053 srb->cmd[0] = SCSI_READ10; 1054 srb->cmd[1] = srb->lun << 5; 1055 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1056 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1057 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1058 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1059 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1060 srb->cmd[8] = (unsigned char) blocks & 0xff; 1061 srb->cmdlen = 12; 1062 debug("read10: start %lx blocks %x\n", start, blocks); 1063 return ss->transport(srb, ss); 1064 } 1065 1066 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 1067 unsigned short blocks) 1068 { 1069 memset(&srb->cmd[0], 0, 12); 1070 srb->cmd[0] = SCSI_WRITE10; 1071 srb->cmd[1] = srb->lun << 5; 1072 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1073 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1074 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1075 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1076 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1077 srb->cmd[8] = (unsigned char) blocks & 0xff; 1078 srb->cmdlen = 12; 1079 debug("write10: start %lx blocks %x\n", start, blocks); 1080 return ss->transport(srb, ss); 1081 } 1082 1083 1084 #ifdef CONFIG_USB_BIN_FIXUP 1085 /* 1086 * Some USB storage devices queried for SCSI identification data respond with 1087 * binary strings, which if output to the console freeze the terminal. The 1088 * workaround is to modify the vendor and product strings read from such 1089 * device with proper values (as reported by 'usb info'). 1090 * 1091 * Vendor and product length limits are taken from the definition of 1092 * struct blk_desc in include/part.h. 1093 */ 1094 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1095 unsigned char vendor[], 1096 unsigned char product[]) { 1097 const unsigned char max_vendor_len = 40; 1098 const unsigned char max_product_len = 20; 1099 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1100 strncpy((char *)vendor, "SMSC", max_vendor_len); 1101 strncpy((char *)product, "Flash Media Cntrller", 1102 max_product_len); 1103 } 1104 } 1105 #endif /* CONFIG_USB_BIN_FIXUP */ 1106 1107 #ifdef CONFIG_BLK 1108 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr, 1109 lbaint_t blkcnt, void *buffer) 1110 #else 1111 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr, 1112 lbaint_t blkcnt, void *buffer) 1113 #endif 1114 { 1115 lbaint_t start, blks; 1116 uintptr_t buf_addr; 1117 unsigned short smallblks; 1118 struct usb_device *udev; 1119 struct us_data *ss; 1120 int retry; 1121 ccb *srb = &usb_ccb; 1122 #ifdef CONFIG_BLK 1123 struct blk_desc *block_dev; 1124 #endif 1125 1126 if (blkcnt == 0) 1127 return 0; 1128 /* Setup device */ 1129 #ifdef CONFIG_BLK 1130 block_dev = dev_get_uclass_platdata(dev); 1131 udev = dev_get_parent_priv(dev_get_parent(dev)); 1132 debug("\nusb_read: udev %d\n", block_dev->devnum); 1133 #else 1134 debug("\nusb_read: udev %d\n", block_dev->devnum); 1135 udev = usb_dev_desc[block_dev->devnum].priv; 1136 if (!udev) { 1137 debug("%s: No device\n", __func__); 1138 return 0; 1139 } 1140 #endif 1141 ss = (struct us_data *)udev->privptr; 1142 1143 usb_disable_asynch(1); /* asynch transfer not allowed */ 1144 srb->lun = block_dev->lun; 1145 buf_addr = (uintptr_t)buffer; 1146 start = blknr; 1147 blks = blkcnt; 1148 1149 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF " buffer %" 1150 PRIxPTR "\n", block_dev->devnum, start, blks, buf_addr); 1151 1152 do { 1153 /* XXX need some comment here */ 1154 retry = 2; 1155 srb->pdata = (unsigned char *)buf_addr; 1156 if (blks > USB_MAX_XFER_BLK) 1157 smallblks = USB_MAX_XFER_BLK; 1158 else 1159 smallblks = (unsigned short) blks; 1160 retry_it: 1161 if (smallblks == USB_MAX_XFER_BLK) 1162 usb_show_progress(); 1163 srb->datalen = block_dev->blksz * smallblks; 1164 srb->pdata = (unsigned char *)buf_addr; 1165 if (usb_read_10(srb, ss, start, smallblks)) { 1166 debug("Read ERROR\n"); 1167 usb_request_sense(srb, ss); 1168 if (retry--) 1169 goto retry_it; 1170 blkcnt -= blks; 1171 break; 1172 } 1173 start += smallblks; 1174 blks -= smallblks; 1175 buf_addr += srb->datalen; 1176 } while (blks != 0); 1177 ss->flags &= ~USB_READY; 1178 1179 debug("usb_read: end startblk " LBAF 1180 ", blccnt %x buffer %" PRIxPTR "\n", 1181 start, smallblks, buf_addr); 1182 1183 usb_disable_asynch(0); /* asynch transfer allowed */ 1184 if (blkcnt >= USB_MAX_XFER_BLK) 1185 debug("\n"); 1186 return blkcnt; 1187 } 1188 1189 #ifdef CONFIG_BLK 1190 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr, 1191 lbaint_t blkcnt, const void *buffer) 1192 #else 1193 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr, 1194 lbaint_t blkcnt, const void *buffer) 1195 #endif 1196 { 1197 lbaint_t start, blks; 1198 uintptr_t buf_addr; 1199 unsigned short smallblks; 1200 struct usb_device *udev; 1201 struct us_data *ss; 1202 int retry; 1203 ccb *srb = &usb_ccb; 1204 #ifdef CONFIG_BLK 1205 struct blk_desc *block_dev; 1206 #endif 1207 1208 if (blkcnt == 0) 1209 return 0; 1210 1211 /* Setup device */ 1212 #ifdef CONFIG_BLK 1213 block_dev = dev_get_uclass_platdata(dev); 1214 udev = dev_get_parent_priv(dev_get_parent(dev)); 1215 debug("\nusb_read: udev %d\n", block_dev->devnum); 1216 #else 1217 debug("\nusb_read: udev %d\n", block_dev->devnum); 1218 udev = usb_dev_desc[block_dev->devnum].priv; 1219 if (!udev) { 1220 debug("%s: No device\n", __func__); 1221 return 0; 1222 } 1223 #endif 1224 ss = (struct us_data *)udev->privptr; 1225 1226 usb_disable_asynch(1); /* asynch transfer not allowed */ 1227 1228 srb->lun = block_dev->lun; 1229 buf_addr = (uintptr_t)buffer; 1230 start = blknr; 1231 blks = blkcnt; 1232 1233 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF " buffer %" 1234 PRIxPTR "\n", block_dev->devnum, start, blks, buf_addr); 1235 1236 do { 1237 /* If write fails retry for max retry count else 1238 * return with number of blocks written successfully. 1239 */ 1240 retry = 2; 1241 srb->pdata = (unsigned char *)buf_addr; 1242 if (blks > USB_MAX_XFER_BLK) 1243 smallblks = USB_MAX_XFER_BLK; 1244 else 1245 smallblks = (unsigned short) blks; 1246 retry_it: 1247 if (smallblks == USB_MAX_XFER_BLK) 1248 usb_show_progress(); 1249 srb->datalen = block_dev->blksz * smallblks; 1250 srb->pdata = (unsigned char *)buf_addr; 1251 if (usb_write_10(srb, ss, start, smallblks)) { 1252 debug("Write ERROR\n"); 1253 usb_request_sense(srb, ss); 1254 if (retry--) 1255 goto retry_it; 1256 blkcnt -= blks; 1257 break; 1258 } 1259 start += smallblks; 1260 blks -= smallblks; 1261 buf_addr += srb->datalen; 1262 } while (blks != 0); 1263 ss->flags &= ~USB_READY; 1264 1265 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %" 1266 PRIxPTR "\n", start, smallblks, buf_addr); 1267 1268 usb_disable_asynch(0); /* asynch transfer allowed */ 1269 if (blkcnt >= USB_MAX_XFER_BLK) 1270 debug("\n"); 1271 return blkcnt; 1272 1273 } 1274 1275 /* Probe to see if a new device is actually a Storage device */ 1276 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1277 struct us_data *ss) 1278 { 1279 struct usb_interface *iface; 1280 int i; 1281 struct usb_endpoint_descriptor *ep_desc; 1282 unsigned int flags = 0; 1283 1284 /* let's examine the device now */ 1285 iface = &dev->config.if_desc[ifnum]; 1286 1287 if (dev->descriptor.bDeviceClass != 0 || 1288 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1289 iface->desc.bInterfaceSubClass < US_SC_MIN || 1290 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1291 debug("Not mass storage\n"); 1292 /* if it's not a mass storage, we go no further */ 1293 return 0; 1294 } 1295 1296 memset(ss, 0, sizeof(struct us_data)); 1297 1298 /* At this point, we know we've got a live one */ 1299 debug("\n\nUSB Mass Storage device detected\n"); 1300 1301 /* Initialize the us_data structure with some useful info */ 1302 ss->flags = flags; 1303 ss->ifnum = ifnum; 1304 ss->pusb_dev = dev; 1305 ss->attention_done = 0; 1306 ss->subclass = iface->desc.bInterfaceSubClass; 1307 ss->protocol = iface->desc.bInterfaceProtocol; 1308 1309 /* set the handler pointers based on the protocol */ 1310 debug("Transport: "); 1311 switch (ss->protocol) { 1312 case US_PR_CB: 1313 debug("Control/Bulk\n"); 1314 ss->transport = usb_stor_CB_transport; 1315 ss->transport_reset = usb_stor_CB_reset; 1316 break; 1317 1318 case US_PR_CBI: 1319 debug("Control/Bulk/Interrupt\n"); 1320 ss->transport = usb_stor_CB_transport; 1321 ss->transport_reset = usb_stor_CB_reset; 1322 break; 1323 case US_PR_BULK: 1324 debug("Bulk/Bulk/Bulk\n"); 1325 ss->transport = usb_stor_BBB_transport; 1326 ss->transport_reset = usb_stor_BBB_reset; 1327 break; 1328 default: 1329 printf("USB Storage Transport unknown / not yet implemented\n"); 1330 return 0; 1331 break; 1332 } 1333 1334 /* 1335 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1336 * An optional interrupt is OK (necessary for CBI protocol). 1337 * We will ignore any others. 1338 */ 1339 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1340 ep_desc = &iface->ep_desc[i]; 1341 /* is it an BULK endpoint? */ 1342 if ((ep_desc->bmAttributes & 1343 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1344 if (ep_desc->bEndpointAddress & USB_DIR_IN) 1345 ss->ep_in = ep_desc->bEndpointAddress & 1346 USB_ENDPOINT_NUMBER_MASK; 1347 else 1348 ss->ep_out = 1349 ep_desc->bEndpointAddress & 1350 USB_ENDPOINT_NUMBER_MASK; 1351 } 1352 1353 /* is it an interrupt endpoint? */ 1354 if ((ep_desc->bmAttributes & 1355 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1356 ss->ep_int = ep_desc->bEndpointAddress & 1357 USB_ENDPOINT_NUMBER_MASK; 1358 ss->irqinterval = ep_desc->bInterval; 1359 } 1360 } 1361 debug("Endpoints In %d Out %d Int %d\n", 1362 ss->ep_in, ss->ep_out, ss->ep_int); 1363 1364 /* Do some basic sanity checks, and bail if we find a problem */ 1365 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1366 !ss->ep_in || !ss->ep_out || 1367 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1368 debug("Problems with device\n"); 1369 return 0; 1370 } 1371 /* set class specific stuff */ 1372 /* We only handle certain protocols. Currently, these are 1373 * the only ones. 1374 * The SFF8070 accepts the requests used in u-boot 1375 */ 1376 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1377 ss->subclass != US_SC_8070) { 1378 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1379 return 0; 1380 } 1381 if (ss->ep_int) { 1382 /* we had found an interrupt endpoint, prepare irq pipe 1383 * set up the IRQ pipe and handler 1384 */ 1385 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1386 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1387 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1388 dev->irq_handle = usb_stor_irq; 1389 } 1390 dev->privptr = (void *)ss; 1391 return 1; 1392 } 1393 1394 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1395 struct blk_desc *dev_desc) 1396 { 1397 unsigned char perq, modi; 1398 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2); 1399 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36); 1400 u32 capacity, blksz; 1401 ccb *pccb = &usb_ccb; 1402 1403 pccb->pdata = usb_stor_buf; 1404 1405 dev_desc->target = dev->devnum; 1406 pccb->lun = dev_desc->lun; 1407 debug(" address %d\n", dev_desc->target); 1408 1409 if (usb_inquiry(pccb, ss)) { 1410 debug("%s: usb_inquiry() failed\n", __func__); 1411 return -1; 1412 } 1413 1414 perq = usb_stor_buf[0]; 1415 modi = usb_stor_buf[1]; 1416 1417 /* 1418 * Skip unknown devices (0x1f) and enclosure service devices (0x0d), 1419 * they would not respond to test_unit_ready . 1420 */ 1421 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) { 1422 debug("%s: unknown/unsupported device\n", __func__); 1423 return 0; 1424 } 1425 if ((modi&0x80) == 0x80) { 1426 /* drive is removable */ 1427 dev_desc->removable = 1; 1428 } 1429 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8); 1430 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16); 1431 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4); 1432 dev_desc->vendor[8] = 0; 1433 dev_desc->product[16] = 0; 1434 dev_desc->revision[4] = 0; 1435 #ifdef CONFIG_USB_BIN_FIXUP 1436 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1437 (uchar *)dev_desc->product); 1438 #endif /* CONFIG_USB_BIN_FIXUP */ 1439 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1440 usb_stor_buf[3]); 1441 if (usb_test_unit_ready(pccb, ss)) { 1442 printf("Device NOT ready\n" 1443 " Request Sense returned %02X %02X %02X\n", 1444 pccb->sense_buf[2], pccb->sense_buf[12], 1445 pccb->sense_buf[13]); 1446 if (dev_desc->removable == 1) { 1447 dev_desc->type = perq; 1448 return 1; 1449 } 1450 return 0; 1451 } 1452 pccb->pdata = (unsigned char *)cap; 1453 memset(pccb->pdata, 0, 8); 1454 if (usb_read_capacity(pccb, ss) != 0) { 1455 printf("READ_CAP ERROR\n"); 1456 cap[0] = 2880; 1457 cap[1] = 0x200; 1458 } 1459 ss->flags &= ~USB_READY; 1460 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]); 1461 #if 0 1462 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1463 cap[0] >>= 16; 1464 1465 cap[0] = cpu_to_be32(cap[0]); 1466 cap[1] = cpu_to_be32(cap[1]); 1467 #endif 1468 1469 capacity = be32_to_cpu(cap[0]) + 1; 1470 blksz = be32_to_cpu(cap[1]); 1471 1472 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz); 1473 dev_desc->lba = capacity; 1474 dev_desc->blksz = blksz; 1475 dev_desc->log2blksz = LOG2(dev_desc->blksz); 1476 dev_desc->type = perq; 1477 debug(" address %d\n", dev_desc->target); 1478 1479 return 1; 1480 } 1481 1482 #ifdef CONFIG_DM_USB 1483 1484 static int usb_mass_storage_probe(struct udevice *dev) 1485 { 1486 struct usb_device *udev = dev_get_parent_priv(dev); 1487 int ret; 1488 1489 usb_disable_asynch(1); /* asynch transfer not allowed */ 1490 ret = usb_stor_probe_device(udev); 1491 usb_disable_asynch(0); /* asynch transfer allowed */ 1492 1493 return ret; 1494 } 1495 1496 static const struct udevice_id usb_mass_storage_ids[] = { 1497 { .compatible = "usb-mass-storage" }, 1498 { } 1499 }; 1500 1501 U_BOOT_DRIVER(usb_mass_storage) = { 1502 .name = "usb_mass_storage", 1503 .id = UCLASS_MASS_STORAGE, 1504 .of_match = usb_mass_storage_ids, 1505 .probe = usb_mass_storage_probe, 1506 #ifdef CONFIG_BLK 1507 .platdata_auto_alloc_size = sizeof(struct us_data), 1508 #endif 1509 }; 1510 1511 UCLASS_DRIVER(usb_mass_storage) = { 1512 .id = UCLASS_MASS_STORAGE, 1513 .name = "usb_mass_storage", 1514 }; 1515 1516 static const struct usb_device_id mass_storage_id_table[] = { 1517 { 1518 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, 1519 .bInterfaceClass = USB_CLASS_MASS_STORAGE 1520 }, 1521 { } /* Terminating entry */ 1522 }; 1523 1524 U_BOOT_USB_DEVICE(usb_mass_storage, mass_storage_id_table); 1525 #endif 1526 1527 #ifdef CONFIG_BLK 1528 static const struct blk_ops usb_storage_ops = { 1529 .read = usb_stor_read, 1530 .write = usb_stor_write, 1531 }; 1532 1533 U_BOOT_DRIVER(usb_storage_blk) = { 1534 .name = "usb_storage_blk", 1535 .id = UCLASS_BLK, 1536 .ops = &usb_storage_ops, 1537 }; 1538 #else 1539 U_BOOT_LEGACY_BLK(usb) = { 1540 .if_typename = "usb", 1541 .if_type = IF_TYPE_USB, 1542 .max_devs = USB_MAX_STOR_DEV, 1543 .desc = usb_dev_desc, 1544 }; 1545 #endif 1546