1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Most of this source has been derived from the Linux USB 4 * project: 5 * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) 6 * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org) 7 * (c) 1999 Michael Gee (michael@linuxspecific.com) 8 * (c) 2000 Yggdrasil Computing, Inc. 9 * 10 * 11 * Adapted for U-Boot: 12 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland 13 * Driver model conversion: 14 * (C) Copyright 2015 Google, Inc 15 * 16 * For BBB support (C) Copyright 2003 17 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de> 18 * 19 * BBB support based on /sys/dev/usb/umass.c from 20 * FreeBSD. 21 */ 22 23 /* Note: 24 * Currently only the CBI transport protocoll has been implemented, and it 25 * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB 26 * transport protocoll may work as well. 27 */ 28 /* 29 * New Note: 30 * Support for USB Mass Storage Devices (BBB) has been added. It has 31 * only been tested with USB memory sticks. 32 */ 33 34 35 #include <common.h> 36 #include <command.h> 37 #include <dm.h> 38 #include <errno.h> 39 #include <mapmem.h> 40 #include <memalign.h> 41 #include <asm/byteorder.h> 42 #include <asm/processor.h> 43 #include <dm/device-internal.h> 44 #include <dm/lists.h> 45 46 #include <part.h> 47 #include <usb.h> 48 49 #undef BBB_COMDAT_TRACE 50 #undef BBB_XPORT_TRACE 51 52 #include <scsi.h> 53 /* direction table -- this indicates the direction of the data 54 * transfer for each command code -- a 1 indicates input 55 */ 56 static const unsigned char us_direction[256/8] = { 57 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77, 58 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 59 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 60 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 61 }; 62 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1) 63 64 static struct scsi_cmd usb_ccb __aligned(ARCH_DMA_MINALIGN); 65 static __u32 CBWTag; 66 67 static int usb_max_devs; /* number of highest available usb device */ 68 69 #if !CONFIG_IS_ENABLED(BLK) 70 static struct blk_desc usb_dev_desc[USB_MAX_STOR_DEV]; 71 #endif 72 73 struct us_data; 74 typedef int (*trans_cmnd)(struct scsi_cmd *cb, struct us_data *data); 75 typedef int (*trans_reset)(struct us_data *data); 76 77 struct us_data { 78 struct usb_device *pusb_dev; /* this usb_device */ 79 80 unsigned int flags; /* from filter initially */ 81 # define USB_READY (1 << 0) 82 unsigned char ifnum; /* interface number */ 83 unsigned char ep_in; /* in endpoint */ 84 unsigned char ep_out; /* out ....... */ 85 unsigned char ep_int; /* interrupt . */ 86 unsigned char subclass; /* as in overview */ 87 unsigned char protocol; /* .............. */ 88 unsigned char attention_done; /* force attn on first cmd */ 89 unsigned short ip_data; /* interrupt data */ 90 int action; /* what to do */ 91 int ip_wanted; /* needed */ 92 int *irq_handle; /* for USB int requests */ 93 unsigned int irqpipe; /* pipe for release_irq */ 94 unsigned char irqmaxp; /* max packed for irq Pipe */ 95 unsigned char irqinterval; /* Intervall for IRQ Pipe */ 96 struct scsi_cmd *srb; /* current srb */ 97 trans_reset transport_reset; /* reset routine */ 98 trans_cmnd transport; /* transport routine */ 99 unsigned short max_xfer_blk; /* maximum transfer blocks */ 100 }; 101 102 #if !CONFIG_IS_ENABLED(BLK) 103 static struct us_data usb_stor[USB_MAX_STOR_DEV]; 104 #endif 105 106 #define USB_STOR_TRANSPORT_GOOD 0 107 #define USB_STOR_TRANSPORT_FAILED -1 108 #define USB_STOR_TRANSPORT_ERROR -2 109 110 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, 111 struct blk_desc *dev_desc); 112 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 113 struct us_data *ss); 114 #if CONFIG_IS_ENABLED(BLK) 115 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr, 116 lbaint_t blkcnt, void *buffer); 117 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr, 118 lbaint_t blkcnt, const void *buffer); 119 #else 120 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr, 121 lbaint_t blkcnt, void *buffer); 122 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr, 123 lbaint_t blkcnt, const void *buffer); 124 #endif 125 void uhci_show_temp_int_td(void); 126 127 static void usb_show_progress(void) 128 { 129 debug("."); 130 } 131 132 /******************************************************************************* 133 * show info on storage devices; 'usb start/init' must be invoked earlier 134 * as we only retrieve structures populated during devices initialization 135 */ 136 int usb_stor_info(void) 137 { 138 int count = 0; 139 #if CONFIG_IS_ENABLED(BLK) 140 struct udevice *dev; 141 142 for (blk_first_device(IF_TYPE_USB, &dev); 143 dev; 144 blk_next_device(&dev)) { 145 struct blk_desc *desc = dev_get_uclass_platdata(dev); 146 147 printf(" Device %d: ", desc->devnum); 148 dev_print(desc); 149 count++; 150 } 151 #else 152 int i; 153 154 if (usb_max_devs > 0) { 155 for (i = 0; i < usb_max_devs; i++) { 156 printf(" Device %d: ", i); 157 dev_print(&usb_dev_desc[i]); 158 } 159 return 0; 160 } 161 #endif 162 if (!count) { 163 printf("No storage devices, perhaps not 'usb start'ed..?\n"); 164 return 1; 165 } 166 167 return 0; 168 } 169 170 static unsigned int usb_get_max_lun(struct us_data *us) 171 { 172 int len; 173 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1); 174 len = usb_control_msg(us->pusb_dev, 175 usb_rcvctrlpipe(us->pusb_dev, 0), 176 US_BBB_GET_MAX_LUN, 177 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 178 0, us->ifnum, 179 result, sizeof(char), 180 USB_CNTL_TIMEOUT * 5); 181 debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result); 182 return (len > 0) ? *result : 0; 183 } 184 185 static int usb_stor_probe_device(struct usb_device *udev) 186 { 187 int lun, max_lun; 188 189 #if CONFIG_IS_ENABLED(BLK) 190 struct us_data *data; 191 int ret; 192 #else 193 int start; 194 195 if (udev == NULL) 196 return -ENOENT; /* no more devices available */ 197 #endif 198 199 debug("\n\nProbing for storage\n"); 200 #if CONFIG_IS_ENABLED(BLK) 201 /* 202 * We store the us_data in the mass storage device's platdata. It 203 * is shared by all LUNs (block devices) attached to this mass storage 204 * device. 205 */ 206 data = dev_get_platdata(udev->dev); 207 if (!usb_storage_probe(udev, 0, data)) 208 return 0; 209 max_lun = usb_get_max_lun(data); 210 for (lun = 0; lun <= max_lun; lun++) { 211 struct blk_desc *blkdev; 212 struct udevice *dev; 213 char str[10]; 214 215 snprintf(str, sizeof(str), "lun%d", lun); 216 ret = blk_create_devicef(udev->dev, "usb_storage_blk", str, 217 IF_TYPE_USB, usb_max_devs, 512, 0, 218 &dev); 219 if (ret) { 220 debug("Cannot bind driver\n"); 221 return ret; 222 } 223 224 blkdev = dev_get_uclass_platdata(dev); 225 blkdev->target = 0xff; 226 blkdev->lun = lun; 227 228 ret = usb_stor_get_info(udev, data, blkdev); 229 if (ret == 1) { 230 usb_max_devs++; 231 debug("%s: Found device %p\n", __func__, udev); 232 } else { 233 debug("usb_stor_get_info: Invalid device\n"); 234 ret = device_unbind(dev); 235 if (ret) 236 return ret; 237 } 238 } 239 #else 240 /* We don't have space to even probe if we hit the maximum */ 241 if (usb_max_devs == USB_MAX_STOR_DEV) { 242 printf("max USB Storage Device reached: %d stopping\n", 243 usb_max_devs); 244 return -ENOSPC; 245 } 246 247 if (!usb_storage_probe(udev, 0, &usb_stor[usb_max_devs])) 248 return 0; 249 250 /* 251 * OK, it's a storage device. Iterate over its LUNs and populate 252 * usb_dev_desc' 253 */ 254 start = usb_max_devs; 255 256 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 257 for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; 258 lun++) { 259 struct blk_desc *blkdev; 260 261 blkdev = &usb_dev_desc[usb_max_devs]; 262 memset(blkdev, '\0', sizeof(struct blk_desc)); 263 blkdev->if_type = IF_TYPE_USB; 264 blkdev->devnum = usb_max_devs; 265 blkdev->part_type = PART_TYPE_UNKNOWN; 266 blkdev->target = 0xff; 267 blkdev->type = DEV_TYPE_UNKNOWN; 268 blkdev->block_read = usb_stor_read; 269 blkdev->block_write = usb_stor_write; 270 blkdev->lun = lun; 271 blkdev->priv = udev; 272 273 if (usb_stor_get_info(udev, &usb_stor[start], 274 &usb_dev_desc[usb_max_devs]) == 1) { 275 debug("partype: %d\n", blkdev->part_type); 276 part_init(blkdev); 277 debug("partype: %d\n", blkdev->part_type); 278 usb_max_devs++; 279 debug("%s: Found device %p\n", __func__, udev); 280 } 281 } 282 #endif 283 284 return 0; 285 } 286 287 void usb_stor_reset(void) 288 { 289 usb_max_devs = 0; 290 } 291 292 /******************************************************************************* 293 * scan the usb and reports device info 294 * to the user if mode = 1 295 * returns current device or -1 if no 296 */ 297 int usb_stor_scan(int mode) 298 { 299 if (mode == 1) 300 printf(" scanning usb for storage devices... "); 301 302 #if !CONFIG_IS_ENABLED(DM_USB) 303 unsigned char i; 304 305 usb_disable_asynch(1); /* asynch transfer not allowed */ 306 307 usb_stor_reset(); 308 for (i = 0; i < USB_MAX_DEVICE; i++) { 309 struct usb_device *dev; 310 311 dev = usb_get_dev_index(i); /* get device */ 312 debug("i=%d\n", i); 313 if (usb_stor_probe_device(dev)) 314 break; 315 } /* for */ 316 317 usb_disable_asynch(0); /* asynch transfer allowed */ 318 #endif 319 printf("%d Storage Device(s) found\n", usb_max_devs); 320 if (usb_max_devs > 0) 321 return 0; 322 return -1; 323 } 324 325 static int usb_stor_irq(struct usb_device *dev) 326 { 327 struct us_data *us; 328 us = (struct us_data *)dev->privptr; 329 330 if (us->ip_wanted) 331 us->ip_wanted = 0; 332 return 0; 333 } 334 335 336 #ifdef DEBUG 337 338 static void usb_show_srb(struct scsi_cmd *pccb) 339 { 340 int i; 341 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 342 for (i = 0; i < 12; i++) 343 printf("%02X ", pccb->cmd[i]); 344 printf("\n"); 345 } 346 347 static void display_int_status(unsigned long tmp) 348 { 349 printf("Status: %s %s %s %s %s %s %s\n", 350 (tmp & USB_ST_ACTIVE) ? "Active" : "", 351 (tmp & USB_ST_STALLED) ? "Stalled" : "", 352 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 353 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 354 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 355 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 356 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 357 } 358 #endif 359 /*********************************************************************** 360 * Data transfer routines 361 ***********************************************************************/ 362 363 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 364 { 365 int max_size; 366 int this_xfer; 367 int result; 368 int partial; 369 int maxtry; 370 int stat; 371 372 /* determine the maximum packet size for these transfers */ 373 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 374 375 /* while we have data left to transfer */ 376 while (length) { 377 378 /* calculate how long this will be -- maximum or a remainder */ 379 this_xfer = length > max_size ? max_size : length; 380 length -= this_xfer; 381 382 /* setup the retry counter */ 383 maxtry = 10; 384 385 /* set up the transfer loop */ 386 do { 387 /* transfer the data */ 388 debug("Bulk xfer 0x%lx(%d) try #%d\n", 389 (ulong)map_to_sysmem(buf), this_xfer, 390 11 - maxtry); 391 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 392 this_xfer, &partial, 393 USB_CNTL_TIMEOUT * 5); 394 debug("bulk_msg returned %d xferred %d/%d\n", 395 result, partial, this_xfer); 396 if (us->pusb_dev->status != 0) { 397 /* if we stall, we need to clear it before 398 * we go on 399 */ 400 #ifdef DEBUG 401 display_int_status(us->pusb_dev->status); 402 #endif 403 if (us->pusb_dev->status & USB_ST_STALLED) { 404 debug("stalled ->clearing endpoint" \ 405 "halt for pipe 0x%x\n", pipe); 406 stat = us->pusb_dev->status; 407 usb_clear_halt(us->pusb_dev, pipe); 408 us->pusb_dev->status = stat; 409 if (this_xfer == partial) { 410 debug("bulk transferred" \ 411 "with error %lX," \ 412 " but data ok\n", 413 us->pusb_dev->status); 414 return 0; 415 } 416 else 417 return result; 418 } 419 if (us->pusb_dev->status & USB_ST_NAK_REC) { 420 debug("Device NAKed bulk_msg\n"); 421 return result; 422 } 423 debug("bulk transferred with error"); 424 if (this_xfer == partial) { 425 debug(" %ld, but data ok\n", 426 us->pusb_dev->status); 427 return 0; 428 } 429 /* if our try counter reaches 0, bail out */ 430 debug(" %ld, data %d\n", 431 us->pusb_dev->status, partial); 432 if (!maxtry--) 433 return result; 434 } 435 /* update to show what data was transferred */ 436 this_xfer -= partial; 437 buf += partial; 438 /* continue until this transfer is done */ 439 } while (this_xfer); 440 } 441 442 /* if we get here, we're done and successful */ 443 return 0; 444 } 445 446 static int usb_stor_BBB_reset(struct us_data *us) 447 { 448 int result; 449 unsigned int pipe; 450 451 /* 452 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 453 * 454 * For Reset Recovery the host shall issue in the following order: 455 * a) a Bulk-Only Mass Storage Reset 456 * b) a Clear Feature HALT to the Bulk-In endpoint 457 * c) a Clear Feature HALT to the Bulk-Out endpoint 458 * 459 * This is done in 3 steps. 460 * 461 * If the reset doesn't succeed, the device should be port reset. 462 * 463 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 464 */ 465 debug("BBB_reset\n"); 466 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 467 US_BBB_RESET, 468 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 469 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5); 470 471 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 472 debug("RESET:stall\n"); 473 return -1; 474 } 475 476 /* long wait for reset */ 477 mdelay(150); 478 debug("BBB_reset result %d: status %lX reset\n", 479 result, us->pusb_dev->status); 480 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 481 result = usb_clear_halt(us->pusb_dev, pipe); 482 /* long wait for reset */ 483 mdelay(150); 484 debug("BBB_reset result %d: status %lX clearing IN endpoint\n", 485 result, us->pusb_dev->status); 486 /* long wait for reset */ 487 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 488 result = usb_clear_halt(us->pusb_dev, pipe); 489 mdelay(150); 490 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n", 491 result, us->pusb_dev->status); 492 debug("BBB_reset done\n"); 493 return 0; 494 } 495 496 /* FIXME: this reset function doesn't really reset the port, and it 497 * should. Actually it should probably do what it's doing here, and 498 * reset the port physically 499 */ 500 static int usb_stor_CB_reset(struct us_data *us) 501 { 502 unsigned char cmd[12]; 503 int result; 504 505 debug("CB_reset\n"); 506 memset(cmd, 0xff, sizeof(cmd)); 507 cmd[0] = SCSI_SEND_DIAG; 508 cmd[1] = 4; 509 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 510 US_CBI_ADSC, 511 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 512 0, us->ifnum, cmd, sizeof(cmd), 513 USB_CNTL_TIMEOUT * 5); 514 515 /* long wait for reset */ 516 mdelay(1500); 517 debug("CB_reset result %d: status %lX clearing endpoint halt\n", 518 result, us->pusb_dev->status); 519 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in)); 520 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out)); 521 522 debug("CB_reset done\n"); 523 return 0; 524 } 525 526 /* 527 * Set up the command for a BBB device. Note that the actual SCSI 528 * command is copied into cbw.CBWCDB. 529 */ 530 static int usb_stor_BBB_comdat(struct scsi_cmd *srb, struct us_data *us) 531 { 532 int result; 533 int actlen; 534 int dir_in; 535 unsigned int pipe; 536 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1); 537 538 dir_in = US_DIRECTION(srb->cmd[0]); 539 540 #ifdef BBB_COMDAT_TRACE 541 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n", 542 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, 543 srb->pdata); 544 if (srb->cmdlen) { 545 for (result = 0; result < srb->cmdlen; result++) 546 printf("cmd[%d] %#x ", result, srb->cmd[result]); 547 printf("\n"); 548 } 549 #endif 550 /* sanity checks */ 551 if (!(srb->cmdlen <= CBWCDBLENGTH)) { 552 debug("usb_stor_BBB_comdat:cmdlen too large\n"); 553 return -1; 554 } 555 556 /* always OUT to the ep */ 557 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 558 559 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE); 560 cbw->dCBWTag = cpu_to_le32(CBWTag++); 561 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen); 562 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT); 563 cbw->bCBWLUN = srb->lun; 564 cbw->bCDBLength = srb->cmdlen; 565 /* copy the command data into the CBW command data buffer */ 566 /* DST SRC LEN!!! */ 567 568 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen); 569 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE, 570 &actlen, USB_CNTL_TIMEOUT * 5); 571 if (result < 0) 572 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 573 return result; 574 } 575 576 /* FIXME: we also need a CBI_command which sets up the completion 577 * interrupt, and waits for it 578 */ 579 static int usb_stor_CB_comdat(struct scsi_cmd *srb, struct us_data *us) 580 { 581 int result = 0; 582 int dir_in, retry; 583 unsigned int pipe; 584 unsigned long status; 585 586 retry = 5; 587 dir_in = US_DIRECTION(srb->cmd[0]); 588 589 if (dir_in) 590 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 591 else 592 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 593 594 while (retry--) { 595 debug("CBI gets a command: Try %d\n", 5 - retry); 596 #ifdef DEBUG 597 usb_show_srb(srb); 598 #endif 599 /* let's send the command via the control pipe */ 600 result = usb_control_msg(us->pusb_dev, 601 usb_sndctrlpipe(us->pusb_dev , 0), 602 US_CBI_ADSC, 603 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 604 0, us->ifnum, 605 srb->cmd, srb->cmdlen, 606 USB_CNTL_TIMEOUT * 5); 607 debug("CB_transport: control msg returned %d, status %lX\n", 608 result, us->pusb_dev->status); 609 /* check the return code for the command */ 610 if (result < 0) { 611 if (us->pusb_dev->status & USB_ST_STALLED) { 612 status = us->pusb_dev->status; 613 debug(" stall during command found," \ 614 " clear pipe\n"); 615 usb_clear_halt(us->pusb_dev, 616 usb_sndctrlpipe(us->pusb_dev, 0)); 617 us->pusb_dev->status = status; 618 } 619 debug(" error during command %02X" \ 620 " Stat = %lX\n", srb->cmd[0], 621 us->pusb_dev->status); 622 return result; 623 } 624 /* transfer the data payload for this command, if one exists*/ 625 626 debug("CB_transport: control msg returned %d," \ 627 " direction is %s to go 0x%lx\n", result, 628 dir_in ? "IN" : "OUT", srb->datalen); 629 if (srb->datalen) { 630 result = us_one_transfer(us, pipe, (char *)srb->pdata, 631 srb->datalen); 632 debug("CBI attempted to transfer data," \ 633 " result is %d status %lX, len %d\n", 634 result, us->pusb_dev->status, 635 us->pusb_dev->act_len); 636 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 637 break; 638 } /* if (srb->datalen) */ 639 else 640 break; 641 } 642 /* return result */ 643 644 return result; 645 } 646 647 648 static int usb_stor_CBI_get_status(struct scsi_cmd *srb, struct us_data *us) 649 { 650 int timeout; 651 652 us->ip_wanted = 1; 653 submit_int_msg(us->pusb_dev, us->irqpipe, 654 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 655 timeout = 1000; 656 while (timeout--) { 657 if (us->ip_wanted == 0) 658 break; 659 mdelay(10); 660 } 661 if (us->ip_wanted) { 662 printf(" Did not get interrupt on CBI\n"); 663 us->ip_wanted = 0; 664 return USB_STOR_TRANSPORT_ERROR; 665 } 666 debug("Got interrupt data 0x%x, transferred %d status 0x%lX\n", 667 us->ip_data, us->pusb_dev->irq_act_len, 668 us->pusb_dev->irq_status); 669 /* UFI gives us ASC and ASCQ, like a request sense */ 670 if (us->subclass == US_SC_UFI) { 671 if (srb->cmd[0] == SCSI_REQ_SENSE || 672 srb->cmd[0] == SCSI_INQUIRY) 673 return USB_STOR_TRANSPORT_GOOD; /* Good */ 674 else if (us->ip_data) 675 return USB_STOR_TRANSPORT_FAILED; 676 else 677 return USB_STOR_TRANSPORT_GOOD; 678 } 679 /* otherwise, we interpret the data normally */ 680 switch (us->ip_data) { 681 case 0x0001: 682 return USB_STOR_TRANSPORT_GOOD; 683 case 0x0002: 684 return USB_STOR_TRANSPORT_FAILED; 685 default: 686 return USB_STOR_TRANSPORT_ERROR; 687 } /* switch */ 688 return USB_STOR_TRANSPORT_ERROR; 689 } 690 691 #define USB_TRANSPORT_UNKNOWN_RETRY 5 692 #define USB_TRANSPORT_NOT_READY_RETRY 10 693 694 /* clear a stall on an endpoint - special for BBB devices */ 695 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 696 { 697 /* ENDPOINT_HALT = 0, so set value to 0 */ 698 return usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 699 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, 700 endpt, NULL, 0, USB_CNTL_TIMEOUT * 5); 701 } 702 703 static int usb_stor_BBB_transport(struct scsi_cmd *srb, struct us_data *us) 704 { 705 int result, retry; 706 int dir_in; 707 int actlen, data_actlen; 708 unsigned int pipe, pipein, pipeout; 709 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1); 710 #ifdef BBB_XPORT_TRACE 711 unsigned char *ptr; 712 int index; 713 #endif 714 715 dir_in = US_DIRECTION(srb->cmd[0]); 716 717 /* COMMAND phase */ 718 debug("COMMAND phase\n"); 719 result = usb_stor_BBB_comdat(srb, us); 720 if (result < 0) { 721 debug("failed to send CBW status %ld\n", 722 us->pusb_dev->status); 723 usb_stor_BBB_reset(us); 724 return USB_STOR_TRANSPORT_FAILED; 725 } 726 if (!(us->flags & USB_READY)) 727 mdelay(5); 728 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 729 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 730 /* DATA phase + error handling */ 731 data_actlen = 0; 732 /* no data, go immediately to the STATUS phase */ 733 if (srb->datalen == 0) 734 goto st; 735 debug("DATA phase\n"); 736 if (dir_in) 737 pipe = pipein; 738 else 739 pipe = pipeout; 740 741 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 742 &data_actlen, USB_CNTL_TIMEOUT * 5); 743 /* special handling of STALL in DATA phase */ 744 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 745 debug("DATA:stall\n"); 746 /* clear the STALL on the endpoint */ 747 result = usb_stor_BBB_clear_endpt_stall(us, 748 dir_in ? us->ep_in : us->ep_out); 749 if (result >= 0) 750 /* continue on to STATUS phase */ 751 goto st; 752 } 753 if (result < 0) { 754 debug("usb_bulk_msg error status %ld\n", 755 us->pusb_dev->status); 756 usb_stor_BBB_reset(us); 757 return USB_STOR_TRANSPORT_FAILED; 758 } 759 #ifdef BBB_XPORT_TRACE 760 for (index = 0; index < data_actlen; index++) 761 printf("pdata[%d] %#x ", index, srb->pdata[index]); 762 printf("\n"); 763 #endif 764 /* STATUS phase + error handling */ 765 st: 766 retry = 0; 767 again: 768 debug("STATUS phase\n"); 769 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 770 &actlen, USB_CNTL_TIMEOUT*5); 771 772 /* special handling of STALL in STATUS phase */ 773 if ((result < 0) && (retry < 1) && 774 (us->pusb_dev->status & USB_ST_STALLED)) { 775 debug("STATUS:stall\n"); 776 /* clear the STALL on the endpoint */ 777 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 778 if (result >= 0 && (retry++ < 1)) 779 /* do a retry */ 780 goto again; 781 } 782 if (result < 0) { 783 debug("usb_bulk_msg error status %ld\n", 784 us->pusb_dev->status); 785 usb_stor_BBB_reset(us); 786 return USB_STOR_TRANSPORT_FAILED; 787 } 788 #ifdef BBB_XPORT_TRACE 789 ptr = (unsigned char *)csw; 790 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 791 printf("ptr[%d] %#x ", index, ptr[index]); 792 printf("\n"); 793 #endif 794 /* misuse pipe to get the residue */ 795 pipe = le32_to_cpu(csw->dCSWDataResidue); 796 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 797 pipe = srb->datalen - data_actlen; 798 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 799 debug("!CSWSIGNATURE\n"); 800 usb_stor_BBB_reset(us); 801 return USB_STOR_TRANSPORT_FAILED; 802 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 803 debug("!Tag\n"); 804 usb_stor_BBB_reset(us); 805 return USB_STOR_TRANSPORT_FAILED; 806 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 807 debug(">PHASE\n"); 808 usb_stor_BBB_reset(us); 809 return USB_STOR_TRANSPORT_FAILED; 810 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 811 debug("=PHASE\n"); 812 usb_stor_BBB_reset(us); 813 return USB_STOR_TRANSPORT_FAILED; 814 } else if (data_actlen > srb->datalen) { 815 debug("transferred %dB instead of %ldB\n", 816 data_actlen, srb->datalen); 817 return USB_STOR_TRANSPORT_FAILED; 818 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 819 debug("FAILED\n"); 820 return USB_STOR_TRANSPORT_FAILED; 821 } 822 823 return result; 824 } 825 826 static int usb_stor_CB_transport(struct scsi_cmd *srb, struct us_data *us) 827 { 828 int result, status; 829 struct scsi_cmd *psrb; 830 struct scsi_cmd reqsrb; 831 int retry, notready; 832 833 psrb = &reqsrb; 834 status = USB_STOR_TRANSPORT_GOOD; 835 retry = 0; 836 notready = 0; 837 /* issue the command */ 838 do_retry: 839 result = usb_stor_CB_comdat(srb, us); 840 debug("command / Data returned %d, status %lX\n", 841 result, us->pusb_dev->status); 842 /* if this is an CBI Protocol, get IRQ */ 843 if (us->protocol == US_PR_CBI) { 844 status = usb_stor_CBI_get_status(srb, us); 845 /* if the status is error, report it */ 846 if (status == USB_STOR_TRANSPORT_ERROR) { 847 debug(" USB CBI Command Error\n"); 848 return status; 849 } 850 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 851 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 852 if (!us->ip_data) { 853 /* if the status is good, report it */ 854 if (status == USB_STOR_TRANSPORT_GOOD) { 855 debug(" USB CBI Command Good\n"); 856 return status; 857 } 858 } 859 } 860 /* do we have to issue an auto request? */ 861 /* HERE we have to check the result */ 862 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 863 debug("ERROR %lX\n", us->pusb_dev->status); 864 us->transport_reset(us); 865 return USB_STOR_TRANSPORT_ERROR; 866 } 867 if ((us->protocol == US_PR_CBI) && 868 ((srb->cmd[0] == SCSI_REQ_SENSE) || 869 (srb->cmd[0] == SCSI_INQUIRY))) { 870 /* do not issue an autorequest after request sense */ 871 debug("No auto request and good\n"); 872 return USB_STOR_TRANSPORT_GOOD; 873 } 874 /* issue an request_sense */ 875 memset(&psrb->cmd[0], 0, 12); 876 psrb->cmd[0] = SCSI_REQ_SENSE; 877 psrb->cmd[1] = srb->lun << 5; 878 psrb->cmd[4] = 18; 879 psrb->datalen = 18; 880 psrb->pdata = &srb->sense_buf[0]; 881 psrb->cmdlen = 12; 882 /* issue the command */ 883 result = usb_stor_CB_comdat(psrb, us); 884 debug("auto request returned %d\n", result); 885 /* if this is an CBI Protocol, get IRQ */ 886 if (us->protocol == US_PR_CBI) 887 status = usb_stor_CBI_get_status(psrb, us); 888 889 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 890 debug(" AUTO REQUEST ERROR %ld\n", 891 us->pusb_dev->status); 892 return USB_STOR_TRANSPORT_ERROR; 893 } 894 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 895 srb->sense_buf[0], srb->sense_buf[2], 896 srb->sense_buf[12], srb->sense_buf[13]); 897 /* Check the auto request result */ 898 if ((srb->sense_buf[2] == 0) && 899 (srb->sense_buf[12] == 0) && 900 (srb->sense_buf[13] == 0)) { 901 /* ok, no sense */ 902 return USB_STOR_TRANSPORT_GOOD; 903 } 904 905 /* Check the auto request result */ 906 switch (srb->sense_buf[2]) { 907 case 0x01: 908 /* Recovered Error */ 909 return USB_STOR_TRANSPORT_GOOD; 910 break; 911 case 0x02: 912 /* Not Ready */ 913 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 914 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 915 " 0x%02X (NOT READY)\n", srb->cmd[0], 916 srb->sense_buf[0], srb->sense_buf[2], 917 srb->sense_buf[12], srb->sense_buf[13]); 918 return USB_STOR_TRANSPORT_FAILED; 919 } else { 920 mdelay(100); 921 goto do_retry; 922 } 923 break; 924 default: 925 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 926 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 927 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 928 srb->sense_buf[2], srb->sense_buf[12], 929 srb->sense_buf[13]); 930 return USB_STOR_TRANSPORT_FAILED; 931 } else 932 goto do_retry; 933 break; 934 } 935 return USB_STOR_TRANSPORT_FAILED; 936 } 937 938 static void usb_stor_set_max_xfer_blk(struct usb_device *udev, 939 struct us_data *us) 940 { 941 unsigned short blk; 942 size_t __maybe_unused size; 943 int __maybe_unused ret; 944 945 #if !CONFIG_IS_ENABLED(DM_USB) 946 #ifdef CONFIG_USB_EHCI_HCD 947 /* 948 * The U-Boot EHCI driver can handle any transfer length as long as 949 * there is enough free heap space left, but the SCSI READ(10) and 950 * WRITE(10) commands are limited to 65535 blocks. 951 */ 952 blk = USHRT_MAX; 953 #else 954 blk = 20; 955 #endif 956 #else 957 ret = usb_get_max_xfer_size(udev, (size_t *)&size); 958 if (ret < 0) { 959 /* unimplemented, let's use default 20 */ 960 blk = 20; 961 } else { 962 if (size > USHRT_MAX * 512) 963 size = USHRT_MAX * 512; 964 blk = size / 512; 965 } 966 #endif 967 968 us->max_xfer_blk = blk; 969 } 970 971 static int usb_inquiry(struct scsi_cmd *srb, struct us_data *ss) 972 { 973 int retry, i; 974 retry = 5; 975 do { 976 memset(&srb->cmd[0], 0, 12); 977 srb->cmd[0] = SCSI_INQUIRY; 978 srb->cmd[1] = srb->lun << 5; 979 srb->cmd[4] = 36; 980 srb->datalen = 36; 981 srb->cmdlen = 12; 982 i = ss->transport(srb, ss); 983 debug("inquiry returns %d\n", i); 984 if (i == 0) 985 break; 986 } while (--retry); 987 988 if (!retry) { 989 printf("error in inquiry\n"); 990 return -1; 991 } 992 return 0; 993 } 994 995 static int usb_request_sense(struct scsi_cmd *srb, struct us_data *ss) 996 { 997 char *ptr; 998 999 ptr = (char *)srb->pdata; 1000 memset(&srb->cmd[0], 0, 12); 1001 srb->cmd[0] = SCSI_REQ_SENSE; 1002 srb->cmd[1] = srb->lun << 5; 1003 srb->cmd[4] = 18; 1004 srb->datalen = 18; 1005 srb->pdata = &srb->sense_buf[0]; 1006 srb->cmdlen = 12; 1007 ss->transport(srb, ss); 1008 debug("Request Sense returned %02X %02X %02X\n", 1009 srb->sense_buf[2], srb->sense_buf[12], 1010 srb->sense_buf[13]); 1011 srb->pdata = (uchar *)ptr; 1012 return 0; 1013 } 1014 1015 static int usb_test_unit_ready(struct scsi_cmd *srb, struct us_data *ss) 1016 { 1017 int retries = 10; 1018 1019 do { 1020 memset(&srb->cmd[0], 0, 12); 1021 srb->cmd[0] = SCSI_TST_U_RDY; 1022 srb->cmd[1] = srb->lun << 5; 1023 srb->datalen = 0; 1024 srb->cmdlen = 12; 1025 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) { 1026 ss->flags |= USB_READY; 1027 return 0; 1028 } 1029 usb_request_sense(srb, ss); 1030 /* 1031 * Check the Key Code Qualifier, if it matches 1032 * "Not Ready - medium not present" 1033 * (the sense Key equals 0x2 and the ASC is 0x3a) 1034 * return immediately as the medium being absent won't change 1035 * unless there is a user action. 1036 */ 1037 if ((srb->sense_buf[2] == 0x02) && 1038 (srb->sense_buf[12] == 0x3a)) 1039 return -1; 1040 mdelay(100); 1041 } while (retries--); 1042 1043 return -1; 1044 } 1045 1046 static int usb_read_capacity(struct scsi_cmd *srb, struct us_data *ss) 1047 { 1048 int retry; 1049 /* XXX retries */ 1050 retry = 3; 1051 do { 1052 memset(&srb->cmd[0], 0, 12); 1053 srb->cmd[0] = SCSI_RD_CAPAC; 1054 srb->cmd[1] = srb->lun << 5; 1055 srb->datalen = 8; 1056 srb->cmdlen = 12; 1057 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 1058 return 0; 1059 } while (retry--); 1060 1061 return -1; 1062 } 1063 1064 static int usb_read_10(struct scsi_cmd *srb, struct us_data *ss, 1065 unsigned long start, unsigned short blocks) 1066 { 1067 memset(&srb->cmd[0], 0, 12); 1068 srb->cmd[0] = SCSI_READ10; 1069 srb->cmd[1] = srb->lun << 5; 1070 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1071 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1072 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1073 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1074 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1075 srb->cmd[8] = (unsigned char) blocks & 0xff; 1076 srb->cmdlen = 12; 1077 debug("read10: start %lx blocks %x\n", start, blocks); 1078 return ss->transport(srb, ss); 1079 } 1080 1081 static int usb_write_10(struct scsi_cmd *srb, struct us_data *ss, 1082 unsigned long start, unsigned short blocks) 1083 { 1084 memset(&srb->cmd[0], 0, 12); 1085 srb->cmd[0] = SCSI_WRITE10; 1086 srb->cmd[1] = srb->lun << 5; 1087 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1088 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1089 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1090 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1091 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1092 srb->cmd[8] = (unsigned char) blocks & 0xff; 1093 srb->cmdlen = 12; 1094 debug("write10: start %lx blocks %x\n", start, blocks); 1095 return ss->transport(srb, ss); 1096 } 1097 1098 1099 #ifdef CONFIG_USB_BIN_FIXUP 1100 /* 1101 * Some USB storage devices queried for SCSI identification data respond with 1102 * binary strings, which if output to the console freeze the terminal. The 1103 * workaround is to modify the vendor and product strings read from such 1104 * device with proper values (as reported by 'usb info'). 1105 * 1106 * Vendor and product length limits are taken from the definition of 1107 * struct blk_desc in include/part.h. 1108 */ 1109 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1110 unsigned char vendor[], 1111 unsigned char product[]) { 1112 const unsigned char max_vendor_len = 40; 1113 const unsigned char max_product_len = 20; 1114 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1115 strncpy((char *)vendor, "SMSC", max_vendor_len); 1116 strncpy((char *)product, "Flash Media Cntrller", 1117 max_product_len); 1118 } 1119 } 1120 #endif /* CONFIG_USB_BIN_FIXUP */ 1121 1122 #if CONFIG_IS_ENABLED(BLK) 1123 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr, 1124 lbaint_t blkcnt, void *buffer) 1125 #else 1126 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr, 1127 lbaint_t blkcnt, void *buffer) 1128 #endif 1129 { 1130 lbaint_t start, blks; 1131 uintptr_t buf_addr; 1132 unsigned short smallblks; 1133 struct usb_device *udev; 1134 struct us_data *ss; 1135 int retry; 1136 struct scsi_cmd *srb = &usb_ccb; 1137 #if CONFIG_IS_ENABLED(BLK) 1138 struct blk_desc *block_dev; 1139 #endif 1140 1141 if (blkcnt == 0) 1142 return 0; 1143 /* Setup device */ 1144 #if CONFIG_IS_ENABLED(BLK) 1145 block_dev = dev_get_uclass_platdata(dev); 1146 udev = dev_get_parent_priv(dev_get_parent(dev)); 1147 debug("\nusb_read: udev %d\n", block_dev->devnum); 1148 #else 1149 debug("\nusb_read: udev %d\n", block_dev->devnum); 1150 udev = usb_dev_desc[block_dev->devnum].priv; 1151 if (!udev) { 1152 debug("%s: No device\n", __func__); 1153 return 0; 1154 } 1155 #endif 1156 ss = (struct us_data *)udev->privptr; 1157 1158 usb_disable_asynch(1); /* asynch transfer not allowed */ 1159 srb->lun = block_dev->lun; 1160 buf_addr = (uintptr_t)buffer; 1161 start = blknr; 1162 blks = blkcnt; 1163 1164 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n", 1165 block_dev->devnum, start, blks, buf_addr); 1166 1167 do { 1168 /* XXX need some comment here */ 1169 retry = 2; 1170 srb->pdata = (unsigned char *)buf_addr; 1171 if (blks > ss->max_xfer_blk) 1172 smallblks = ss->max_xfer_blk; 1173 else 1174 smallblks = (unsigned short) blks; 1175 retry_it: 1176 if (smallblks == ss->max_xfer_blk) 1177 usb_show_progress(); 1178 srb->datalen = block_dev->blksz * smallblks; 1179 srb->pdata = (unsigned char *)buf_addr; 1180 if (usb_read_10(srb, ss, start, smallblks)) { 1181 debug("Read ERROR\n"); 1182 usb_request_sense(srb, ss); 1183 if (retry--) 1184 goto retry_it; 1185 blkcnt -= blks; 1186 break; 1187 } 1188 start += smallblks; 1189 blks -= smallblks; 1190 buf_addr += srb->datalen; 1191 } while (blks != 0); 1192 ss->flags &= ~USB_READY; 1193 1194 debug("usb_read: end startblk " LBAF ", blccnt %x buffer %lx\n", 1195 start, smallblks, buf_addr); 1196 1197 usb_disable_asynch(0); /* asynch transfer allowed */ 1198 if (blkcnt >= ss->max_xfer_blk) 1199 debug("\n"); 1200 return blkcnt; 1201 } 1202 1203 #if CONFIG_IS_ENABLED(BLK) 1204 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr, 1205 lbaint_t blkcnt, const void *buffer) 1206 #else 1207 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr, 1208 lbaint_t blkcnt, const void *buffer) 1209 #endif 1210 { 1211 lbaint_t start, blks; 1212 uintptr_t buf_addr; 1213 unsigned short smallblks; 1214 struct usb_device *udev; 1215 struct us_data *ss; 1216 int retry; 1217 struct scsi_cmd *srb = &usb_ccb; 1218 #if CONFIG_IS_ENABLED(BLK) 1219 struct blk_desc *block_dev; 1220 #endif 1221 1222 if (blkcnt == 0) 1223 return 0; 1224 1225 /* Setup device */ 1226 #if CONFIG_IS_ENABLED(BLK) 1227 block_dev = dev_get_uclass_platdata(dev); 1228 udev = dev_get_parent_priv(dev_get_parent(dev)); 1229 debug("\nusb_read: udev %d\n", block_dev->devnum); 1230 #else 1231 debug("\nusb_read: udev %d\n", block_dev->devnum); 1232 udev = usb_dev_desc[block_dev->devnum].priv; 1233 if (!udev) { 1234 debug("%s: No device\n", __func__); 1235 return 0; 1236 } 1237 #endif 1238 ss = (struct us_data *)udev->privptr; 1239 1240 usb_disable_asynch(1); /* asynch transfer not allowed */ 1241 1242 srb->lun = block_dev->lun; 1243 buf_addr = (uintptr_t)buffer; 1244 start = blknr; 1245 blks = blkcnt; 1246 1247 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n", 1248 block_dev->devnum, start, blks, buf_addr); 1249 1250 do { 1251 /* If write fails retry for max retry count else 1252 * return with number of blocks written successfully. 1253 */ 1254 retry = 2; 1255 srb->pdata = (unsigned char *)buf_addr; 1256 if (blks > ss->max_xfer_blk) 1257 smallblks = ss->max_xfer_blk; 1258 else 1259 smallblks = (unsigned short) blks; 1260 retry_it: 1261 if (smallblks == ss->max_xfer_blk) 1262 usb_show_progress(); 1263 srb->datalen = block_dev->blksz * smallblks; 1264 srb->pdata = (unsigned char *)buf_addr; 1265 if (usb_write_10(srb, ss, start, smallblks)) { 1266 debug("Write ERROR\n"); 1267 usb_request_sense(srb, ss); 1268 if (retry--) 1269 goto retry_it; 1270 blkcnt -= blks; 1271 break; 1272 } 1273 start += smallblks; 1274 blks -= smallblks; 1275 buf_addr += srb->datalen; 1276 } while (blks != 0); 1277 ss->flags &= ~USB_READY; 1278 1279 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %lx\n", 1280 start, smallblks, buf_addr); 1281 1282 usb_disable_asynch(0); /* asynch transfer allowed */ 1283 if (blkcnt >= ss->max_xfer_blk) 1284 debug("\n"); 1285 return blkcnt; 1286 1287 } 1288 1289 /* Probe to see if a new device is actually a Storage device */ 1290 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1291 struct us_data *ss) 1292 { 1293 struct usb_interface *iface; 1294 int i; 1295 struct usb_endpoint_descriptor *ep_desc; 1296 unsigned int flags = 0; 1297 1298 /* let's examine the device now */ 1299 iface = &dev->config.if_desc[ifnum]; 1300 1301 if (dev->descriptor.bDeviceClass != 0 || 1302 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1303 iface->desc.bInterfaceSubClass < US_SC_MIN || 1304 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1305 debug("Not mass storage\n"); 1306 /* if it's not a mass storage, we go no further */ 1307 return 0; 1308 } 1309 1310 memset(ss, 0, sizeof(struct us_data)); 1311 1312 /* At this point, we know we've got a live one */ 1313 debug("\n\nUSB Mass Storage device detected\n"); 1314 1315 /* Initialize the us_data structure with some useful info */ 1316 ss->flags = flags; 1317 ss->ifnum = ifnum; 1318 ss->pusb_dev = dev; 1319 ss->attention_done = 0; 1320 ss->subclass = iface->desc.bInterfaceSubClass; 1321 ss->protocol = iface->desc.bInterfaceProtocol; 1322 1323 /* set the handler pointers based on the protocol */ 1324 debug("Transport: "); 1325 switch (ss->protocol) { 1326 case US_PR_CB: 1327 debug("Control/Bulk\n"); 1328 ss->transport = usb_stor_CB_transport; 1329 ss->transport_reset = usb_stor_CB_reset; 1330 break; 1331 1332 case US_PR_CBI: 1333 debug("Control/Bulk/Interrupt\n"); 1334 ss->transport = usb_stor_CB_transport; 1335 ss->transport_reset = usb_stor_CB_reset; 1336 break; 1337 case US_PR_BULK: 1338 debug("Bulk/Bulk/Bulk\n"); 1339 ss->transport = usb_stor_BBB_transport; 1340 ss->transport_reset = usb_stor_BBB_reset; 1341 break; 1342 default: 1343 printf("USB Storage Transport unknown / not yet implemented\n"); 1344 return 0; 1345 break; 1346 } 1347 1348 /* 1349 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1350 * An optional interrupt is OK (necessary for CBI protocol). 1351 * We will ignore any others. 1352 */ 1353 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1354 ep_desc = &iface->ep_desc[i]; 1355 /* is it an BULK endpoint? */ 1356 if ((ep_desc->bmAttributes & 1357 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1358 if (ep_desc->bEndpointAddress & USB_DIR_IN) 1359 ss->ep_in = ep_desc->bEndpointAddress & 1360 USB_ENDPOINT_NUMBER_MASK; 1361 else 1362 ss->ep_out = 1363 ep_desc->bEndpointAddress & 1364 USB_ENDPOINT_NUMBER_MASK; 1365 } 1366 1367 /* is it an interrupt endpoint? */ 1368 if ((ep_desc->bmAttributes & 1369 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1370 ss->ep_int = ep_desc->bEndpointAddress & 1371 USB_ENDPOINT_NUMBER_MASK; 1372 ss->irqinterval = ep_desc->bInterval; 1373 } 1374 } 1375 debug("Endpoints In %d Out %d Int %d\n", 1376 ss->ep_in, ss->ep_out, ss->ep_int); 1377 1378 /* Do some basic sanity checks, and bail if we find a problem */ 1379 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1380 !ss->ep_in || !ss->ep_out || 1381 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1382 debug("Problems with device\n"); 1383 return 0; 1384 } 1385 /* set class specific stuff */ 1386 /* We only handle certain protocols. Currently, these are 1387 * the only ones. 1388 * The SFF8070 accepts the requests used in u-boot 1389 */ 1390 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1391 ss->subclass != US_SC_8070) { 1392 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1393 return 0; 1394 } 1395 if (ss->ep_int) { 1396 /* we had found an interrupt endpoint, prepare irq pipe 1397 * set up the IRQ pipe and handler 1398 */ 1399 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1400 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1401 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1402 dev->irq_handle = usb_stor_irq; 1403 } 1404 1405 /* Set the maximum transfer size per host controller setting */ 1406 usb_stor_set_max_xfer_blk(dev, ss); 1407 1408 dev->privptr = (void *)ss; 1409 return 1; 1410 } 1411 1412 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1413 struct blk_desc *dev_desc) 1414 { 1415 unsigned char perq, modi; 1416 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2); 1417 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36); 1418 u32 capacity, blksz; 1419 struct scsi_cmd *pccb = &usb_ccb; 1420 1421 pccb->pdata = usb_stor_buf; 1422 1423 dev_desc->target = dev->devnum; 1424 pccb->lun = dev_desc->lun; 1425 debug(" address %d\n", dev_desc->target); 1426 1427 if (usb_inquiry(pccb, ss)) { 1428 debug("%s: usb_inquiry() failed\n", __func__); 1429 return -1; 1430 } 1431 1432 perq = usb_stor_buf[0]; 1433 modi = usb_stor_buf[1]; 1434 1435 /* 1436 * Skip unknown devices (0x1f) and enclosure service devices (0x0d), 1437 * they would not respond to test_unit_ready . 1438 */ 1439 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) { 1440 debug("%s: unknown/unsupported device\n", __func__); 1441 return 0; 1442 } 1443 if ((modi&0x80) == 0x80) { 1444 /* drive is removable */ 1445 dev_desc->removable = 1; 1446 } 1447 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8); 1448 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16); 1449 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4); 1450 dev_desc->vendor[8] = 0; 1451 dev_desc->product[16] = 0; 1452 dev_desc->revision[4] = 0; 1453 #ifdef CONFIG_USB_BIN_FIXUP 1454 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1455 (uchar *)dev_desc->product); 1456 #endif /* CONFIG_USB_BIN_FIXUP */ 1457 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1458 usb_stor_buf[3]); 1459 if (usb_test_unit_ready(pccb, ss)) { 1460 printf("Device NOT ready\n" 1461 " Request Sense returned %02X %02X %02X\n", 1462 pccb->sense_buf[2], pccb->sense_buf[12], 1463 pccb->sense_buf[13]); 1464 if (dev_desc->removable == 1) 1465 dev_desc->type = perq; 1466 return 0; 1467 } 1468 pccb->pdata = (unsigned char *)cap; 1469 memset(pccb->pdata, 0, 8); 1470 if (usb_read_capacity(pccb, ss) != 0) { 1471 printf("READ_CAP ERROR\n"); 1472 cap[0] = 2880; 1473 cap[1] = 0x200; 1474 } 1475 ss->flags &= ~USB_READY; 1476 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]); 1477 #if 0 1478 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1479 cap[0] >>= 16; 1480 1481 cap[0] = cpu_to_be32(cap[0]); 1482 cap[1] = cpu_to_be32(cap[1]); 1483 #endif 1484 1485 capacity = be32_to_cpu(cap[0]) + 1; 1486 blksz = be32_to_cpu(cap[1]); 1487 1488 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz); 1489 dev_desc->lba = capacity; 1490 dev_desc->blksz = blksz; 1491 dev_desc->log2blksz = LOG2(dev_desc->blksz); 1492 dev_desc->type = perq; 1493 debug(" address %d\n", dev_desc->target); 1494 1495 return 1; 1496 } 1497 1498 #if CONFIG_IS_ENABLED(DM_USB) 1499 1500 static int usb_mass_storage_probe(struct udevice *dev) 1501 { 1502 struct usb_device *udev = dev_get_parent_priv(dev); 1503 int ret; 1504 1505 usb_disable_asynch(1); /* asynch transfer not allowed */ 1506 ret = usb_stor_probe_device(udev); 1507 usb_disable_asynch(0); /* asynch transfer allowed */ 1508 1509 return ret; 1510 } 1511 1512 static const struct udevice_id usb_mass_storage_ids[] = { 1513 { .compatible = "usb-mass-storage" }, 1514 { } 1515 }; 1516 1517 U_BOOT_DRIVER(usb_mass_storage) = { 1518 .name = "usb_mass_storage", 1519 .id = UCLASS_MASS_STORAGE, 1520 .of_match = usb_mass_storage_ids, 1521 .probe = usb_mass_storage_probe, 1522 #if CONFIG_IS_ENABLED(BLK) 1523 .platdata_auto_alloc_size = sizeof(struct us_data), 1524 #endif 1525 }; 1526 1527 UCLASS_DRIVER(usb_mass_storage) = { 1528 .id = UCLASS_MASS_STORAGE, 1529 .name = "usb_mass_storage", 1530 }; 1531 1532 static const struct usb_device_id mass_storage_id_table[] = { 1533 { 1534 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, 1535 .bInterfaceClass = USB_CLASS_MASS_STORAGE 1536 }, 1537 { } /* Terminating entry */ 1538 }; 1539 1540 U_BOOT_USB_DEVICE(usb_mass_storage, mass_storage_id_table); 1541 #endif 1542 1543 #if CONFIG_IS_ENABLED(BLK) 1544 static const struct blk_ops usb_storage_ops = { 1545 .read = usb_stor_read, 1546 .write = usb_stor_write, 1547 }; 1548 1549 U_BOOT_DRIVER(usb_storage_blk) = { 1550 .name = "usb_storage_blk", 1551 .id = UCLASS_BLK, 1552 .ops = &usb_storage_ops, 1553 }; 1554 #else 1555 U_BOOT_LEGACY_BLK(usb) = { 1556 .if_typename = "usb", 1557 .if_type = IF_TYPE_USB, 1558 .max_devs = USB_MAX_STOR_DEV, 1559 .desc = usb_dev_desc, 1560 }; 1561 #endif 1562