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 struct scsi_cmd usb_ccb __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)(struct scsi_cmd *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 struct scsi_cmd *srb; /* current srb */ 99 trans_reset transport_reset; /* reset routine */ 100 trans_cmnd transport; /* transport routine */ 101 }; 102 103 #ifdef CONFIG_USB_EHCI_HCD 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 /******************************************************************************* 307 * scan the usb and reports device info 308 * to the user if mode = 1 309 * returns current device or -1 if no 310 */ 311 int usb_stor_scan(int mode) 312 { 313 if (mode == 1) 314 printf(" scanning usb for storage devices... "); 315 316 #ifndef CONFIG_DM_USB 317 unsigned char i; 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 #endif 333 printf("%d Storage Device(s) found\n", usb_max_devs); 334 if (usb_max_devs > 0) 335 return 0; 336 return -1; 337 } 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(struct scsi_cmd *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(struct scsi_cmd *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(struct scsi_cmd *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(struct scsi_cmd *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 /* ENDPOINT_HALT = 0, so set value to 0 */ 712 return usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 713 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, 714 endpt, NULL, 0, USB_CNTL_TIMEOUT * 5); 715 } 716 717 static int usb_stor_BBB_transport(struct scsi_cmd *srb, struct us_data *us) 718 { 719 int result, retry; 720 int dir_in; 721 int actlen, data_actlen; 722 unsigned int pipe, pipein, pipeout; 723 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1); 724 #ifdef BBB_XPORT_TRACE 725 unsigned char *ptr; 726 int index; 727 #endif 728 729 dir_in = US_DIRECTION(srb->cmd[0]); 730 731 /* COMMAND phase */ 732 debug("COMMAND phase\n"); 733 result = usb_stor_BBB_comdat(srb, us); 734 if (result < 0) { 735 debug("failed to send CBW status %ld\n", 736 us->pusb_dev->status); 737 usb_stor_BBB_reset(us); 738 return USB_STOR_TRANSPORT_FAILED; 739 } 740 if (!(us->flags & USB_READY)) 741 mdelay(5); 742 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 743 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 744 /* DATA phase + error handling */ 745 data_actlen = 0; 746 /* no data, go immediately to the STATUS phase */ 747 if (srb->datalen == 0) 748 goto st; 749 debug("DATA phase\n"); 750 if (dir_in) 751 pipe = pipein; 752 else 753 pipe = pipeout; 754 755 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 756 &data_actlen, USB_CNTL_TIMEOUT * 5); 757 /* special handling of STALL in DATA phase */ 758 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 759 debug("DATA:stall\n"); 760 /* clear the STALL on the endpoint */ 761 result = usb_stor_BBB_clear_endpt_stall(us, 762 dir_in ? us->ep_in : us->ep_out); 763 if (result >= 0) 764 /* continue on to STATUS phase */ 765 goto st; 766 } 767 if (result < 0) { 768 debug("usb_bulk_msg error status %ld\n", 769 us->pusb_dev->status); 770 usb_stor_BBB_reset(us); 771 return USB_STOR_TRANSPORT_FAILED; 772 } 773 #ifdef BBB_XPORT_TRACE 774 for (index = 0; index < data_actlen; index++) 775 printf("pdata[%d] %#x ", index, srb->pdata[index]); 776 printf("\n"); 777 #endif 778 /* STATUS phase + error handling */ 779 st: 780 retry = 0; 781 again: 782 debug("STATUS phase\n"); 783 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 784 &actlen, USB_CNTL_TIMEOUT*5); 785 786 /* special handling of STALL in STATUS phase */ 787 if ((result < 0) && (retry < 1) && 788 (us->pusb_dev->status & USB_ST_STALLED)) { 789 debug("STATUS:stall\n"); 790 /* clear the STALL on the endpoint */ 791 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 792 if (result >= 0 && (retry++ < 1)) 793 /* do a retry */ 794 goto again; 795 } 796 if (result < 0) { 797 debug("usb_bulk_msg error status %ld\n", 798 us->pusb_dev->status); 799 usb_stor_BBB_reset(us); 800 return USB_STOR_TRANSPORT_FAILED; 801 } 802 #ifdef BBB_XPORT_TRACE 803 ptr = (unsigned char *)csw; 804 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 805 printf("ptr[%d] %#x ", index, ptr[index]); 806 printf("\n"); 807 #endif 808 /* misuse pipe to get the residue */ 809 pipe = le32_to_cpu(csw->dCSWDataResidue); 810 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 811 pipe = srb->datalen - data_actlen; 812 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 813 debug("!CSWSIGNATURE\n"); 814 usb_stor_BBB_reset(us); 815 return USB_STOR_TRANSPORT_FAILED; 816 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 817 debug("!Tag\n"); 818 usb_stor_BBB_reset(us); 819 return USB_STOR_TRANSPORT_FAILED; 820 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 821 debug(">PHASE\n"); 822 usb_stor_BBB_reset(us); 823 return USB_STOR_TRANSPORT_FAILED; 824 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 825 debug("=PHASE\n"); 826 usb_stor_BBB_reset(us); 827 return USB_STOR_TRANSPORT_FAILED; 828 } else if (data_actlen > srb->datalen) { 829 debug("transferred %dB instead of %ldB\n", 830 data_actlen, srb->datalen); 831 return USB_STOR_TRANSPORT_FAILED; 832 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 833 debug("FAILED\n"); 834 return USB_STOR_TRANSPORT_FAILED; 835 } 836 837 return result; 838 } 839 840 static int usb_stor_CB_transport(struct scsi_cmd *srb, struct us_data *us) 841 { 842 int result, status; 843 struct scsi_cmd *psrb; 844 struct scsi_cmd reqsrb; 845 int retry, notready; 846 847 psrb = &reqsrb; 848 status = USB_STOR_TRANSPORT_GOOD; 849 retry = 0; 850 notready = 0; 851 /* issue the command */ 852 do_retry: 853 result = usb_stor_CB_comdat(srb, us); 854 debug("command / Data returned %d, status %lX\n", 855 result, us->pusb_dev->status); 856 /* if this is an CBI Protocol, get IRQ */ 857 if (us->protocol == US_PR_CBI) { 858 status = usb_stor_CBI_get_status(srb, us); 859 /* if the status is error, report it */ 860 if (status == USB_STOR_TRANSPORT_ERROR) { 861 debug(" USB CBI Command Error\n"); 862 return status; 863 } 864 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 865 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 866 if (!us->ip_data) { 867 /* if the status is good, report it */ 868 if (status == USB_STOR_TRANSPORT_GOOD) { 869 debug(" USB CBI Command Good\n"); 870 return status; 871 } 872 } 873 } 874 /* do we have to issue an auto request? */ 875 /* HERE we have to check the result */ 876 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 877 debug("ERROR %lX\n", us->pusb_dev->status); 878 us->transport_reset(us); 879 return USB_STOR_TRANSPORT_ERROR; 880 } 881 if ((us->protocol == US_PR_CBI) && 882 ((srb->cmd[0] == SCSI_REQ_SENSE) || 883 (srb->cmd[0] == SCSI_INQUIRY))) { 884 /* do not issue an autorequest after request sense */ 885 debug("No auto request and good\n"); 886 return USB_STOR_TRANSPORT_GOOD; 887 } 888 /* issue an request_sense */ 889 memset(&psrb->cmd[0], 0, 12); 890 psrb->cmd[0] = SCSI_REQ_SENSE; 891 psrb->cmd[1] = srb->lun << 5; 892 psrb->cmd[4] = 18; 893 psrb->datalen = 18; 894 psrb->pdata = &srb->sense_buf[0]; 895 psrb->cmdlen = 12; 896 /* issue the command */ 897 result = usb_stor_CB_comdat(psrb, us); 898 debug("auto request returned %d\n", result); 899 /* if this is an CBI Protocol, get IRQ */ 900 if (us->protocol == US_PR_CBI) 901 status = usb_stor_CBI_get_status(psrb, us); 902 903 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 904 debug(" AUTO REQUEST ERROR %ld\n", 905 us->pusb_dev->status); 906 return USB_STOR_TRANSPORT_ERROR; 907 } 908 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 909 srb->sense_buf[0], srb->sense_buf[2], 910 srb->sense_buf[12], srb->sense_buf[13]); 911 /* Check the auto request result */ 912 if ((srb->sense_buf[2] == 0) && 913 (srb->sense_buf[12] == 0) && 914 (srb->sense_buf[13] == 0)) { 915 /* ok, no sense */ 916 return USB_STOR_TRANSPORT_GOOD; 917 } 918 919 /* Check the auto request result */ 920 switch (srb->sense_buf[2]) { 921 case 0x01: 922 /* Recovered Error */ 923 return USB_STOR_TRANSPORT_GOOD; 924 break; 925 case 0x02: 926 /* Not Ready */ 927 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 928 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 929 " 0x%02X (NOT READY)\n", srb->cmd[0], 930 srb->sense_buf[0], srb->sense_buf[2], 931 srb->sense_buf[12], srb->sense_buf[13]); 932 return USB_STOR_TRANSPORT_FAILED; 933 } else { 934 mdelay(100); 935 goto do_retry; 936 } 937 break; 938 default: 939 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 940 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 941 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 942 srb->sense_buf[2], srb->sense_buf[12], 943 srb->sense_buf[13]); 944 return USB_STOR_TRANSPORT_FAILED; 945 } else 946 goto do_retry; 947 break; 948 } 949 return USB_STOR_TRANSPORT_FAILED; 950 } 951 952 953 static int usb_inquiry(struct scsi_cmd *srb, struct us_data *ss) 954 { 955 int retry, i; 956 retry = 5; 957 do { 958 memset(&srb->cmd[0], 0, 12); 959 srb->cmd[0] = SCSI_INQUIRY; 960 srb->cmd[1] = srb->lun << 5; 961 srb->cmd[4] = 36; 962 srb->datalen = 36; 963 srb->cmdlen = 12; 964 i = ss->transport(srb, ss); 965 debug("inquiry returns %d\n", i); 966 if (i == 0) 967 break; 968 } while (--retry); 969 970 if (!retry) { 971 printf("error in inquiry\n"); 972 return -1; 973 } 974 return 0; 975 } 976 977 static int usb_request_sense(struct scsi_cmd *srb, struct us_data *ss) 978 { 979 char *ptr; 980 981 ptr = (char *)srb->pdata; 982 memset(&srb->cmd[0], 0, 12); 983 srb->cmd[0] = SCSI_REQ_SENSE; 984 srb->cmd[1] = srb->lun << 5; 985 srb->cmd[4] = 18; 986 srb->datalen = 18; 987 srb->pdata = &srb->sense_buf[0]; 988 srb->cmdlen = 12; 989 ss->transport(srb, ss); 990 debug("Request Sense returned %02X %02X %02X\n", 991 srb->sense_buf[2], srb->sense_buf[12], 992 srb->sense_buf[13]); 993 srb->pdata = (uchar *)ptr; 994 return 0; 995 } 996 997 static int usb_test_unit_ready(struct scsi_cmd *srb, struct us_data *ss) 998 { 999 int retries = 10; 1000 1001 do { 1002 memset(&srb->cmd[0], 0, 12); 1003 srb->cmd[0] = SCSI_TST_U_RDY; 1004 srb->cmd[1] = srb->lun << 5; 1005 srb->datalen = 0; 1006 srb->cmdlen = 12; 1007 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) { 1008 ss->flags |= USB_READY; 1009 return 0; 1010 } 1011 usb_request_sense(srb, ss); 1012 /* 1013 * Check the Key Code Qualifier, if it matches 1014 * "Not Ready - medium not present" 1015 * (the sense Key equals 0x2 and the ASC is 0x3a) 1016 * return immediately as the medium being absent won't change 1017 * unless there is a user action. 1018 */ 1019 if ((srb->sense_buf[2] == 0x02) && 1020 (srb->sense_buf[12] == 0x3a)) 1021 return -1; 1022 mdelay(100); 1023 } while (retries--); 1024 1025 return -1; 1026 } 1027 1028 static int usb_read_capacity(struct scsi_cmd *srb, struct us_data *ss) 1029 { 1030 int retry; 1031 /* XXX retries */ 1032 retry = 3; 1033 do { 1034 memset(&srb->cmd[0], 0, 12); 1035 srb->cmd[0] = SCSI_RD_CAPAC; 1036 srb->cmd[1] = srb->lun << 5; 1037 srb->datalen = 8; 1038 srb->cmdlen = 12; 1039 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 1040 return 0; 1041 } while (retry--); 1042 1043 return -1; 1044 } 1045 1046 static int usb_read_10(struct scsi_cmd *srb, struct us_data *ss, 1047 unsigned long start, unsigned short blocks) 1048 { 1049 memset(&srb->cmd[0], 0, 12); 1050 srb->cmd[0] = SCSI_READ10; 1051 srb->cmd[1] = srb->lun << 5; 1052 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1053 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1054 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1055 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1056 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1057 srb->cmd[8] = (unsigned char) blocks & 0xff; 1058 srb->cmdlen = 12; 1059 debug("read10: start %lx blocks %x\n", start, blocks); 1060 return ss->transport(srb, ss); 1061 } 1062 1063 static int usb_write_10(struct scsi_cmd *srb, struct us_data *ss, 1064 unsigned long start, unsigned short blocks) 1065 { 1066 memset(&srb->cmd[0], 0, 12); 1067 srb->cmd[0] = SCSI_WRITE10; 1068 srb->cmd[1] = srb->lun << 5; 1069 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1070 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1071 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1072 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1073 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1074 srb->cmd[8] = (unsigned char) blocks & 0xff; 1075 srb->cmdlen = 12; 1076 debug("write10: start %lx blocks %x\n", start, blocks); 1077 return ss->transport(srb, ss); 1078 } 1079 1080 1081 #ifdef CONFIG_USB_BIN_FIXUP 1082 /* 1083 * Some USB storage devices queried for SCSI identification data respond with 1084 * binary strings, which if output to the console freeze the terminal. The 1085 * workaround is to modify the vendor and product strings read from such 1086 * device with proper values (as reported by 'usb info'). 1087 * 1088 * Vendor and product length limits are taken from the definition of 1089 * struct blk_desc in include/part.h. 1090 */ 1091 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1092 unsigned char vendor[], 1093 unsigned char product[]) { 1094 const unsigned char max_vendor_len = 40; 1095 const unsigned char max_product_len = 20; 1096 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1097 strncpy((char *)vendor, "SMSC", max_vendor_len); 1098 strncpy((char *)product, "Flash Media Cntrller", 1099 max_product_len); 1100 } 1101 } 1102 #endif /* CONFIG_USB_BIN_FIXUP */ 1103 1104 #ifdef CONFIG_BLK 1105 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr, 1106 lbaint_t blkcnt, void *buffer) 1107 #else 1108 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr, 1109 lbaint_t blkcnt, void *buffer) 1110 #endif 1111 { 1112 lbaint_t start, blks; 1113 uintptr_t buf_addr; 1114 unsigned short smallblks; 1115 struct usb_device *udev; 1116 struct us_data *ss; 1117 int retry; 1118 struct scsi_cmd *srb = &usb_ccb; 1119 #ifdef CONFIG_BLK 1120 struct blk_desc *block_dev; 1121 #endif 1122 1123 if (blkcnt == 0) 1124 return 0; 1125 /* Setup device */ 1126 #ifdef CONFIG_BLK 1127 block_dev = dev_get_uclass_platdata(dev); 1128 udev = dev_get_parent_priv(dev_get_parent(dev)); 1129 debug("\nusb_read: udev %d\n", block_dev->devnum); 1130 #else 1131 debug("\nusb_read: udev %d\n", block_dev->devnum); 1132 udev = usb_dev_desc[block_dev->devnum].priv; 1133 if (!udev) { 1134 debug("%s: No device\n", __func__); 1135 return 0; 1136 } 1137 #endif 1138 ss = (struct us_data *)udev->privptr; 1139 1140 usb_disable_asynch(1); /* asynch transfer not allowed */ 1141 srb->lun = block_dev->lun; 1142 buf_addr = (uintptr_t)buffer; 1143 start = blknr; 1144 blks = blkcnt; 1145 1146 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF " buffer %" 1147 PRIxPTR "\n", block_dev->devnum, start, blks, buf_addr); 1148 1149 do { 1150 /* XXX need some comment here */ 1151 retry = 2; 1152 srb->pdata = (unsigned char *)buf_addr; 1153 if (blks > USB_MAX_XFER_BLK) 1154 smallblks = USB_MAX_XFER_BLK; 1155 else 1156 smallblks = (unsigned short) blks; 1157 retry_it: 1158 if (smallblks == USB_MAX_XFER_BLK) 1159 usb_show_progress(); 1160 srb->datalen = block_dev->blksz * smallblks; 1161 srb->pdata = (unsigned char *)buf_addr; 1162 if (usb_read_10(srb, ss, start, smallblks)) { 1163 debug("Read ERROR\n"); 1164 usb_request_sense(srb, ss); 1165 if (retry--) 1166 goto retry_it; 1167 blkcnt -= blks; 1168 break; 1169 } 1170 start += smallblks; 1171 blks -= smallblks; 1172 buf_addr += srb->datalen; 1173 } while (blks != 0); 1174 ss->flags &= ~USB_READY; 1175 1176 debug("usb_read: end startblk " LBAF 1177 ", blccnt %x buffer %" PRIxPTR "\n", 1178 start, smallblks, buf_addr); 1179 1180 usb_disable_asynch(0); /* asynch transfer allowed */ 1181 if (blkcnt >= USB_MAX_XFER_BLK) 1182 debug("\n"); 1183 return blkcnt; 1184 } 1185 1186 #ifdef CONFIG_BLK 1187 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr, 1188 lbaint_t blkcnt, const void *buffer) 1189 #else 1190 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr, 1191 lbaint_t blkcnt, const void *buffer) 1192 #endif 1193 { 1194 lbaint_t start, blks; 1195 uintptr_t buf_addr; 1196 unsigned short smallblks; 1197 struct usb_device *udev; 1198 struct us_data *ss; 1199 int retry; 1200 struct scsi_cmd *srb = &usb_ccb; 1201 #ifdef CONFIG_BLK 1202 struct blk_desc *block_dev; 1203 #endif 1204 1205 if (blkcnt == 0) 1206 return 0; 1207 1208 /* Setup device */ 1209 #ifdef CONFIG_BLK 1210 block_dev = dev_get_uclass_platdata(dev); 1211 udev = dev_get_parent_priv(dev_get_parent(dev)); 1212 debug("\nusb_read: udev %d\n", block_dev->devnum); 1213 #else 1214 debug("\nusb_read: udev %d\n", block_dev->devnum); 1215 udev = usb_dev_desc[block_dev->devnum].priv; 1216 if (!udev) { 1217 debug("%s: No device\n", __func__); 1218 return 0; 1219 } 1220 #endif 1221 ss = (struct us_data *)udev->privptr; 1222 1223 usb_disable_asynch(1); /* asynch transfer not allowed */ 1224 1225 srb->lun = block_dev->lun; 1226 buf_addr = (uintptr_t)buffer; 1227 start = blknr; 1228 blks = blkcnt; 1229 1230 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF " buffer %" 1231 PRIxPTR "\n", block_dev->devnum, start, blks, buf_addr); 1232 1233 do { 1234 /* If write fails retry for max retry count else 1235 * return with number of blocks written successfully. 1236 */ 1237 retry = 2; 1238 srb->pdata = (unsigned char *)buf_addr; 1239 if (blks > USB_MAX_XFER_BLK) 1240 smallblks = USB_MAX_XFER_BLK; 1241 else 1242 smallblks = (unsigned short) blks; 1243 retry_it: 1244 if (smallblks == USB_MAX_XFER_BLK) 1245 usb_show_progress(); 1246 srb->datalen = block_dev->blksz * smallblks; 1247 srb->pdata = (unsigned char *)buf_addr; 1248 if (usb_write_10(srb, ss, start, smallblks)) { 1249 debug("Write ERROR\n"); 1250 usb_request_sense(srb, ss); 1251 if (retry--) 1252 goto retry_it; 1253 blkcnt -= blks; 1254 break; 1255 } 1256 start += smallblks; 1257 blks -= smallblks; 1258 buf_addr += srb->datalen; 1259 } while (blks != 0); 1260 ss->flags &= ~USB_READY; 1261 1262 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %" 1263 PRIxPTR "\n", start, smallblks, buf_addr); 1264 1265 usb_disable_asynch(0); /* asynch transfer allowed */ 1266 if (blkcnt >= USB_MAX_XFER_BLK) 1267 debug("\n"); 1268 return blkcnt; 1269 1270 } 1271 1272 /* Probe to see if a new device is actually a Storage device */ 1273 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1274 struct us_data *ss) 1275 { 1276 struct usb_interface *iface; 1277 int i; 1278 struct usb_endpoint_descriptor *ep_desc; 1279 unsigned int flags = 0; 1280 1281 /* let's examine the device now */ 1282 iface = &dev->config.if_desc[ifnum]; 1283 1284 if (dev->descriptor.bDeviceClass != 0 || 1285 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1286 iface->desc.bInterfaceSubClass < US_SC_MIN || 1287 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1288 debug("Not mass storage\n"); 1289 /* if it's not a mass storage, we go no further */ 1290 return 0; 1291 } 1292 1293 memset(ss, 0, sizeof(struct us_data)); 1294 1295 /* At this point, we know we've got a live one */ 1296 debug("\n\nUSB Mass Storage device detected\n"); 1297 1298 /* Initialize the us_data structure with some useful info */ 1299 ss->flags = flags; 1300 ss->ifnum = ifnum; 1301 ss->pusb_dev = dev; 1302 ss->attention_done = 0; 1303 ss->subclass = iface->desc.bInterfaceSubClass; 1304 ss->protocol = iface->desc.bInterfaceProtocol; 1305 1306 /* set the handler pointers based on the protocol */ 1307 debug("Transport: "); 1308 switch (ss->protocol) { 1309 case US_PR_CB: 1310 debug("Control/Bulk\n"); 1311 ss->transport = usb_stor_CB_transport; 1312 ss->transport_reset = usb_stor_CB_reset; 1313 break; 1314 1315 case US_PR_CBI: 1316 debug("Control/Bulk/Interrupt\n"); 1317 ss->transport = usb_stor_CB_transport; 1318 ss->transport_reset = usb_stor_CB_reset; 1319 break; 1320 case US_PR_BULK: 1321 debug("Bulk/Bulk/Bulk\n"); 1322 ss->transport = usb_stor_BBB_transport; 1323 ss->transport_reset = usb_stor_BBB_reset; 1324 break; 1325 default: 1326 printf("USB Storage Transport unknown / not yet implemented\n"); 1327 return 0; 1328 break; 1329 } 1330 1331 /* 1332 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1333 * An optional interrupt is OK (necessary for CBI protocol). 1334 * We will ignore any others. 1335 */ 1336 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1337 ep_desc = &iface->ep_desc[i]; 1338 /* is it an BULK endpoint? */ 1339 if ((ep_desc->bmAttributes & 1340 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1341 if (ep_desc->bEndpointAddress & USB_DIR_IN) 1342 ss->ep_in = ep_desc->bEndpointAddress & 1343 USB_ENDPOINT_NUMBER_MASK; 1344 else 1345 ss->ep_out = 1346 ep_desc->bEndpointAddress & 1347 USB_ENDPOINT_NUMBER_MASK; 1348 } 1349 1350 /* is it an interrupt endpoint? */ 1351 if ((ep_desc->bmAttributes & 1352 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1353 ss->ep_int = ep_desc->bEndpointAddress & 1354 USB_ENDPOINT_NUMBER_MASK; 1355 ss->irqinterval = ep_desc->bInterval; 1356 } 1357 } 1358 debug("Endpoints In %d Out %d Int %d\n", 1359 ss->ep_in, ss->ep_out, ss->ep_int); 1360 1361 /* Do some basic sanity checks, and bail if we find a problem */ 1362 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1363 !ss->ep_in || !ss->ep_out || 1364 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1365 debug("Problems with device\n"); 1366 return 0; 1367 } 1368 /* set class specific stuff */ 1369 /* We only handle certain protocols. Currently, these are 1370 * the only ones. 1371 * The SFF8070 accepts the requests used in u-boot 1372 */ 1373 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1374 ss->subclass != US_SC_8070) { 1375 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1376 return 0; 1377 } 1378 if (ss->ep_int) { 1379 /* we had found an interrupt endpoint, prepare irq pipe 1380 * set up the IRQ pipe and handler 1381 */ 1382 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1383 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1384 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1385 dev->irq_handle = usb_stor_irq; 1386 } 1387 dev->privptr = (void *)ss; 1388 return 1; 1389 } 1390 1391 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1392 struct blk_desc *dev_desc) 1393 { 1394 unsigned char perq, modi; 1395 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2); 1396 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36); 1397 u32 capacity, blksz; 1398 struct scsi_cmd *pccb = &usb_ccb; 1399 1400 pccb->pdata = usb_stor_buf; 1401 1402 dev_desc->target = dev->devnum; 1403 pccb->lun = dev_desc->lun; 1404 debug(" address %d\n", dev_desc->target); 1405 1406 if (usb_inquiry(pccb, ss)) { 1407 debug("%s: usb_inquiry() failed\n", __func__); 1408 return -1; 1409 } 1410 1411 perq = usb_stor_buf[0]; 1412 modi = usb_stor_buf[1]; 1413 1414 /* 1415 * Skip unknown devices (0x1f) and enclosure service devices (0x0d), 1416 * they would not respond to test_unit_ready . 1417 */ 1418 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) { 1419 debug("%s: unknown/unsupported device\n", __func__); 1420 return 0; 1421 } 1422 if ((modi&0x80) == 0x80) { 1423 /* drive is removable */ 1424 dev_desc->removable = 1; 1425 } 1426 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8); 1427 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16); 1428 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4); 1429 dev_desc->vendor[8] = 0; 1430 dev_desc->product[16] = 0; 1431 dev_desc->revision[4] = 0; 1432 #ifdef CONFIG_USB_BIN_FIXUP 1433 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1434 (uchar *)dev_desc->product); 1435 #endif /* CONFIG_USB_BIN_FIXUP */ 1436 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1437 usb_stor_buf[3]); 1438 if (usb_test_unit_ready(pccb, ss)) { 1439 printf("Device NOT ready\n" 1440 " Request Sense returned %02X %02X %02X\n", 1441 pccb->sense_buf[2], pccb->sense_buf[12], 1442 pccb->sense_buf[13]); 1443 if (dev_desc->removable == 1) 1444 dev_desc->type = perq; 1445 return 0; 1446 } 1447 pccb->pdata = (unsigned char *)cap; 1448 memset(pccb->pdata, 0, 8); 1449 if (usb_read_capacity(pccb, ss) != 0) { 1450 printf("READ_CAP ERROR\n"); 1451 cap[0] = 2880; 1452 cap[1] = 0x200; 1453 } 1454 ss->flags &= ~USB_READY; 1455 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]); 1456 #if 0 1457 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1458 cap[0] >>= 16; 1459 1460 cap[0] = cpu_to_be32(cap[0]); 1461 cap[1] = cpu_to_be32(cap[1]); 1462 #endif 1463 1464 capacity = be32_to_cpu(cap[0]) + 1; 1465 blksz = be32_to_cpu(cap[1]); 1466 1467 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz); 1468 dev_desc->lba = capacity; 1469 dev_desc->blksz = blksz; 1470 dev_desc->log2blksz = LOG2(dev_desc->blksz); 1471 dev_desc->type = perq; 1472 debug(" address %d\n", dev_desc->target); 1473 1474 return 1; 1475 } 1476 1477 #ifdef CONFIG_DM_USB 1478 1479 static int usb_mass_storage_probe(struct udevice *dev) 1480 { 1481 struct usb_device *udev = dev_get_parent_priv(dev); 1482 int ret; 1483 1484 usb_disable_asynch(1); /* asynch transfer not allowed */ 1485 ret = usb_stor_probe_device(udev); 1486 usb_disable_asynch(0); /* asynch transfer allowed */ 1487 1488 return ret; 1489 } 1490 1491 static const struct udevice_id usb_mass_storage_ids[] = { 1492 { .compatible = "usb-mass-storage" }, 1493 { } 1494 }; 1495 1496 U_BOOT_DRIVER(usb_mass_storage) = { 1497 .name = "usb_mass_storage", 1498 .id = UCLASS_MASS_STORAGE, 1499 .of_match = usb_mass_storage_ids, 1500 .probe = usb_mass_storage_probe, 1501 #ifdef CONFIG_BLK 1502 .platdata_auto_alloc_size = sizeof(struct us_data), 1503 #endif 1504 }; 1505 1506 UCLASS_DRIVER(usb_mass_storage) = { 1507 .id = UCLASS_MASS_STORAGE, 1508 .name = "usb_mass_storage", 1509 }; 1510 1511 static const struct usb_device_id mass_storage_id_table[] = { 1512 { 1513 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, 1514 .bInterfaceClass = USB_CLASS_MASS_STORAGE 1515 }, 1516 { } /* Terminating entry */ 1517 }; 1518 1519 U_BOOT_USB_DEVICE(usb_mass_storage, mass_storage_id_table); 1520 #endif 1521 1522 #ifdef CONFIG_BLK 1523 static const struct blk_ops usb_storage_ops = { 1524 .read = usb_stor_read, 1525 .write = usb_stor_write, 1526 }; 1527 1528 U_BOOT_DRIVER(usb_storage_blk) = { 1529 .name = "usb_storage_blk", 1530 .id = UCLASS_BLK, 1531 .ops = &usb_storage_ops, 1532 }; 1533 #else 1534 U_BOOT_LEGACY_BLK(usb) = { 1535 .if_typename = "usb", 1536 .if_type = IF_TYPE_USB, 1537 .max_devs = USB_MAX_STOR_DEV, 1538 .desc = usb_dev_desc, 1539 }; 1540 #endif 1541