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