1 /* 2 * Most of this source has been derived from the Linux USB 3 * project: 4 * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) 5 * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org) 6 * (c) 1999 Michael Gee (michael@linuxspecific.com) 7 * (c) 2000 Yggdrasil Computing, Inc. 8 * 9 * 10 * Adapted for U-Boot: 11 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland 12 * 13 * For BBB support (C) Copyright 2003 14 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de> 15 * 16 * BBB support based on /sys/dev/usb/umass.c from 17 * FreeBSD. 18 * 19 * See file CREDITS for list of people who contributed to this 20 * project. 21 * 22 * This program is free software; you can redistribute it and/or 23 * modify it under the terms of the GNU General Public License as 24 * published by the Free Software Foundation; either version 2 of 25 * the License, or (at your option) any later version. 26 * 27 * This program is distributed in the hope that it will be useful, 28 * but WITHOUT ANY WARRANTY; without even the implied warranty of 29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 30 * GNU General Public License for more details. 31 * 32 * You should have received a copy of the GNU General Public License 33 * along with this program; if not, write to the Free Software 34 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 35 * MA 02111-1307 USA 36 * 37 */ 38 39 /* Note: 40 * Currently only the CBI transport protocoll has been implemented, and it 41 * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB 42 * transport protocoll may work as well. 43 */ 44 /* 45 * New Note: 46 * Support for USB Mass Storage Devices (BBB) has been added. It has 47 * only been tested with USB memory sticks. 48 */ 49 50 51 #include <common.h> 52 #include <command.h> 53 #include <asm/byteorder.h> 54 #include <asm/processor.h> 55 56 #include <part.h> 57 #include <usb.h> 58 59 #undef BBB_COMDAT_TRACE 60 #undef BBB_XPORT_TRACE 61 62 #include <scsi.h> 63 /* direction table -- this indicates the direction of the data 64 * transfer for each command code -- a 1 indicates input 65 */ 66 static const unsigned char us_direction[256/8] = { 67 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77, 68 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 69 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 70 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 71 }; 72 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1) 73 74 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN))); 75 76 /* 77 * CBI style 78 */ 79 80 #define US_CBI_ADSC 0 81 82 /* 83 * BULK only 84 */ 85 #define US_BBB_RESET 0xff 86 #define US_BBB_GET_MAX_LUN 0xfe 87 88 /* Command Block Wrapper */ 89 typedef struct { 90 __u32 dCBWSignature; 91 # define CBWSIGNATURE 0x43425355 92 __u32 dCBWTag; 93 __u32 dCBWDataTransferLength; 94 __u8 bCBWFlags; 95 # define CBWFLAGS_OUT 0x00 96 # define CBWFLAGS_IN 0x80 97 __u8 bCBWLUN; 98 __u8 bCDBLength; 99 # define CBWCDBLENGTH 16 100 __u8 CBWCDB[CBWCDBLENGTH]; 101 } umass_bbb_cbw_t; 102 #define UMASS_BBB_CBW_SIZE 31 103 static __u32 CBWTag; 104 105 /* Command Status Wrapper */ 106 typedef struct { 107 __u32 dCSWSignature; 108 # define CSWSIGNATURE 0x53425355 109 __u32 dCSWTag; 110 __u32 dCSWDataResidue; 111 __u8 bCSWStatus; 112 # define CSWSTATUS_GOOD 0x0 113 # define CSWSTATUS_FAILED 0x1 114 # define CSWSTATUS_PHASE 0x2 115 } umass_bbb_csw_t; 116 #define UMASS_BBB_CSW_SIZE 13 117 118 #define USB_MAX_STOR_DEV 5 119 static int usb_max_devs; /* number of highest available usb device */ 120 121 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV]; 122 123 struct us_data; 124 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data); 125 typedef int (*trans_reset)(struct us_data *data); 126 127 struct us_data { 128 struct usb_device *pusb_dev; /* this usb_device */ 129 130 unsigned int flags; /* from filter initially */ 131 # define USB_READY (1 << 0) 132 unsigned char ifnum; /* interface number */ 133 unsigned char ep_in; /* in endpoint */ 134 unsigned char ep_out; /* out ....... */ 135 unsigned char ep_int; /* interrupt . */ 136 unsigned char subclass; /* as in overview */ 137 unsigned char protocol; /* .............. */ 138 unsigned char attention_done; /* force attn on first cmd */ 139 unsigned short ip_data; /* interrupt data */ 140 int action; /* what to do */ 141 int ip_wanted; /* needed */ 142 int *irq_handle; /* for USB int requests */ 143 unsigned int irqpipe; /* pipe for release_irq */ 144 unsigned char irqmaxp; /* max packed for irq Pipe */ 145 unsigned char irqinterval; /* Intervall for IRQ Pipe */ 146 ccb *srb; /* current srb */ 147 trans_reset transport_reset; /* reset routine */ 148 trans_cmnd transport; /* transport routine */ 149 }; 150 151 #ifdef CONFIG_USB_EHCI 152 /* 153 * The U-Boot EHCI driver can handle any transfer length as long as there is 154 * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are 155 * limited to 65535 blocks. 156 */ 157 #define USB_MAX_XFER_BLK 65535 158 #else 159 #define USB_MAX_XFER_BLK 20 160 #endif 161 162 static struct us_data usb_stor[USB_MAX_STOR_DEV]; 163 164 165 #define USB_STOR_TRANSPORT_GOOD 0 166 #define USB_STOR_TRANSPORT_FAILED -1 167 #define USB_STOR_TRANSPORT_ERROR -2 168 169 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, 170 block_dev_desc_t *dev_desc); 171 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 172 struct us_data *ss); 173 unsigned long usb_stor_read(int device, unsigned long blknr, 174 lbaint_t blkcnt, void *buffer); 175 unsigned long usb_stor_write(int device, unsigned long blknr, 176 lbaint_t blkcnt, const void *buffer); 177 struct usb_device * usb_get_dev_index(int index); 178 void uhci_show_temp_int_td(void); 179 180 #ifdef CONFIG_PARTITIONS 181 block_dev_desc_t *usb_stor_get_dev(int index) 182 { 183 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL; 184 } 185 #endif 186 187 static void usb_show_progress(void) 188 { 189 debug("."); 190 } 191 192 /******************************************************************************* 193 * show info on storage devices; 'usb start/init' must be invoked earlier 194 * as we only retrieve structures populated during devices initialization 195 */ 196 int usb_stor_info(void) 197 { 198 int i; 199 200 if (usb_max_devs > 0) { 201 for (i = 0; i < usb_max_devs; i++) { 202 printf(" Device %d: ", i); 203 dev_print(&usb_dev_desc[i]); 204 } 205 return 0; 206 } 207 208 printf("No storage devices, perhaps not 'usb start'ed..?\n"); 209 return 1; 210 } 211 212 static unsigned int usb_get_max_lun(struct us_data *us) 213 { 214 int len; 215 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1); 216 len = usb_control_msg(us->pusb_dev, 217 usb_rcvctrlpipe(us->pusb_dev, 0), 218 US_BBB_GET_MAX_LUN, 219 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 220 0, us->ifnum, 221 result, sizeof(char), 222 USB_CNTL_TIMEOUT * 5); 223 debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result); 224 return (len > 0) ? *result : 0; 225 } 226 227 /******************************************************************************* 228 * scan the usb and reports device info 229 * to the user if mode = 1 230 * returns current device or -1 if no 231 */ 232 int usb_stor_scan(int mode) 233 { 234 unsigned char i; 235 struct usb_device *dev; 236 237 if (mode == 1) 238 printf(" scanning usb for storage devices... "); 239 240 usb_disable_asynch(1); /* asynch transfer not allowed */ 241 242 for (i = 0; i < USB_MAX_STOR_DEV; i++) { 243 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t)); 244 usb_dev_desc[i].if_type = IF_TYPE_USB; 245 usb_dev_desc[i].dev = i; 246 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN; 247 usb_dev_desc[i].target = 0xff; 248 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN; 249 usb_dev_desc[i].block_read = usb_stor_read; 250 usb_dev_desc[i].block_write = usb_stor_write; 251 } 252 253 usb_max_devs = 0; 254 for (i = 0; i < USB_MAX_DEVICE; i++) { 255 dev = usb_get_dev_index(i); /* get device */ 256 debug("i=%d\n", i); 257 if (dev == NULL) 258 break; /* no more devices available */ 259 260 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) { 261 /* OK, it's a storage device. Iterate over its LUNs 262 * and populate `usb_dev_desc'. 263 */ 264 int lun, max_lun, start = usb_max_devs; 265 266 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 267 for (lun = 0; 268 lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; 269 lun++) { 270 usb_dev_desc[usb_max_devs].lun = lun; 271 if (usb_stor_get_info(dev, &usb_stor[start], 272 &usb_dev_desc[usb_max_devs]) == 1) { 273 usb_max_devs++; 274 } 275 } 276 } 277 /* if storage device */ 278 if (usb_max_devs == USB_MAX_STOR_DEV) { 279 printf("max USB Storage Device reached: %d stopping\n", 280 usb_max_devs); 281 break; 282 } 283 } /* for */ 284 285 usb_disable_asynch(0); /* asynch transfer allowed */ 286 printf("%d Storage Device(s) found\n", usb_max_devs); 287 if (usb_max_devs > 0) 288 return 0; 289 return -1; 290 } 291 292 static int usb_stor_irq(struct usb_device *dev) 293 { 294 struct us_data *us; 295 us = (struct us_data *)dev->privptr; 296 297 if (us->ip_wanted) 298 us->ip_wanted = 0; 299 return 0; 300 } 301 302 303 #ifdef DEBUG 304 305 static void usb_show_srb(ccb *pccb) 306 { 307 int i; 308 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 309 for (i = 0; i < 12; i++) 310 printf("%02X ", pccb->cmd[i]); 311 printf("\n"); 312 } 313 314 static void display_int_status(unsigned long tmp) 315 { 316 printf("Status: %s %s %s %s %s %s %s\n", 317 (tmp & USB_ST_ACTIVE) ? "Active" : "", 318 (tmp & USB_ST_STALLED) ? "Stalled" : "", 319 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 320 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 321 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 322 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 323 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 324 } 325 #endif 326 /*********************************************************************** 327 * Data transfer routines 328 ***********************************************************************/ 329 330 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 331 { 332 int max_size; 333 int this_xfer; 334 int result; 335 int partial; 336 int maxtry; 337 int stat; 338 339 /* determine the maximum packet size for these transfers */ 340 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 341 342 /* while we have data left to transfer */ 343 while (length) { 344 345 /* calculate how long this will be -- maximum or a remainder */ 346 this_xfer = length > max_size ? max_size : length; 347 length -= this_xfer; 348 349 /* setup the retry counter */ 350 maxtry = 10; 351 352 /* set up the transfer loop */ 353 do { 354 /* transfer the data */ 355 debug("Bulk xfer 0x%x(%d) try #%d\n", 356 (unsigned int)buf, this_xfer, 11 - maxtry); 357 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 358 this_xfer, &partial, 359 USB_CNTL_TIMEOUT * 5); 360 debug("bulk_msg returned %d xferred %d/%d\n", 361 result, partial, this_xfer); 362 if (us->pusb_dev->status != 0) { 363 /* if we stall, we need to clear it before 364 * we go on 365 */ 366 #ifdef DEBUG 367 display_int_status(us->pusb_dev->status); 368 #endif 369 if (us->pusb_dev->status & USB_ST_STALLED) { 370 debug("stalled ->clearing endpoint" \ 371 "halt for pipe 0x%x\n", pipe); 372 stat = us->pusb_dev->status; 373 usb_clear_halt(us->pusb_dev, pipe); 374 us->pusb_dev->status = stat; 375 if (this_xfer == partial) { 376 debug("bulk transferred" \ 377 "with error %lX," \ 378 " but data ok\n", 379 us->pusb_dev->status); 380 return 0; 381 } 382 else 383 return result; 384 } 385 if (us->pusb_dev->status & USB_ST_NAK_REC) { 386 debug("Device NAKed bulk_msg\n"); 387 return result; 388 } 389 debug("bulk transferred with error"); 390 if (this_xfer == partial) { 391 debug(" %ld, but data ok\n", 392 us->pusb_dev->status); 393 return 0; 394 } 395 /* if our try counter reaches 0, bail out */ 396 debug(" %ld, data %d\n", 397 us->pusb_dev->status, partial); 398 if (!maxtry--) 399 return result; 400 } 401 /* update to show what data was transferred */ 402 this_xfer -= partial; 403 buf += partial; 404 /* continue until this transfer is done */ 405 } while (this_xfer); 406 } 407 408 /* if we get here, we're done and successful */ 409 return 0; 410 } 411 412 static int usb_stor_BBB_reset(struct us_data *us) 413 { 414 int result; 415 unsigned int pipe; 416 417 /* 418 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 419 * 420 * For Reset Recovery the host shall issue in the following order: 421 * a) a Bulk-Only Mass Storage Reset 422 * b) a Clear Feature HALT to the Bulk-In endpoint 423 * c) a Clear Feature HALT to the Bulk-Out endpoint 424 * 425 * This is done in 3 steps. 426 * 427 * If the reset doesn't succeed, the device should be port reset. 428 * 429 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 430 */ 431 debug("BBB_reset\n"); 432 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 433 US_BBB_RESET, 434 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 435 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5); 436 437 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 438 debug("RESET:stall\n"); 439 return -1; 440 } 441 442 /* long wait for reset */ 443 mdelay(150); 444 debug("BBB_reset result %d: status %lX reset\n", 445 result, us->pusb_dev->status); 446 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 447 result = usb_clear_halt(us->pusb_dev, pipe); 448 /* long wait for reset */ 449 mdelay(150); 450 debug("BBB_reset result %d: status %lX clearing IN endpoint\n", 451 result, us->pusb_dev->status); 452 /* long wait for reset */ 453 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 454 result = usb_clear_halt(us->pusb_dev, pipe); 455 mdelay(150); 456 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n", 457 result, us->pusb_dev->status); 458 debug("BBB_reset done\n"); 459 return 0; 460 } 461 462 /* FIXME: this reset function doesn't really reset the port, and it 463 * should. Actually it should probably do what it's doing here, and 464 * reset the port physically 465 */ 466 static int usb_stor_CB_reset(struct us_data *us) 467 { 468 unsigned char cmd[12]; 469 int result; 470 471 debug("CB_reset\n"); 472 memset(cmd, 0xff, sizeof(cmd)); 473 cmd[0] = SCSI_SEND_DIAG; 474 cmd[1] = 4; 475 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 476 US_CBI_ADSC, 477 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 478 0, us->ifnum, cmd, sizeof(cmd), 479 USB_CNTL_TIMEOUT * 5); 480 481 /* long wait for reset */ 482 mdelay(1500); 483 debug("CB_reset result %d: status %lX clearing endpoint halt\n", 484 result, us->pusb_dev->status); 485 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in)); 486 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out)); 487 488 debug("CB_reset done\n"); 489 return 0; 490 } 491 492 /* 493 * Set up the command for a BBB device. Note that the actual SCSI 494 * command is copied into cbw.CBWCDB. 495 */ 496 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us) 497 { 498 int result; 499 int actlen; 500 int dir_in; 501 unsigned int pipe; 502 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_cbw_t, cbw, 1); 503 504 dir_in = US_DIRECTION(srb->cmd[0]); 505 506 #ifdef BBB_COMDAT_TRACE 507 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n", 508 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, 509 srb->pdata); 510 if (srb->cmdlen) { 511 for (result = 0; result < srb->cmdlen; result++) 512 printf("cmd[%d] %#x ", result, srb->cmd[result]); 513 printf("\n"); 514 } 515 #endif 516 /* sanity checks */ 517 if (!(srb->cmdlen <= CBWCDBLENGTH)) { 518 debug("usb_stor_BBB_comdat:cmdlen too large\n"); 519 return -1; 520 } 521 522 /* always OUT to the ep */ 523 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 524 525 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE); 526 cbw->dCBWTag = cpu_to_le32(CBWTag++); 527 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen); 528 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT); 529 cbw->bCBWLUN = srb->lun; 530 cbw->bCDBLength = srb->cmdlen; 531 /* copy the command data into the CBW command data buffer */ 532 /* DST SRC LEN!!! */ 533 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen); 534 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE, 535 &actlen, USB_CNTL_TIMEOUT * 5); 536 if (result < 0) 537 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 538 return result; 539 } 540 541 /* FIXME: we also need a CBI_command which sets up the completion 542 * interrupt, and waits for it 543 */ 544 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us) 545 { 546 int result = 0; 547 int dir_in, retry; 548 unsigned int pipe; 549 unsigned long status; 550 551 retry = 5; 552 dir_in = US_DIRECTION(srb->cmd[0]); 553 554 if (dir_in) 555 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 556 else 557 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 558 559 while (retry--) { 560 debug("CBI gets a command: Try %d\n", 5 - retry); 561 #ifdef DEBUG 562 usb_show_srb(srb); 563 #endif 564 /* let's send the command via the control pipe */ 565 result = usb_control_msg(us->pusb_dev, 566 usb_sndctrlpipe(us->pusb_dev , 0), 567 US_CBI_ADSC, 568 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 569 0, us->ifnum, 570 srb->cmd, srb->cmdlen, 571 USB_CNTL_TIMEOUT * 5); 572 debug("CB_transport: control msg returned %d, status %lX\n", 573 result, us->pusb_dev->status); 574 /* check the return code for the command */ 575 if (result < 0) { 576 if (us->pusb_dev->status & USB_ST_STALLED) { 577 status = us->pusb_dev->status; 578 debug(" stall during command found," \ 579 " clear pipe\n"); 580 usb_clear_halt(us->pusb_dev, 581 usb_sndctrlpipe(us->pusb_dev, 0)); 582 us->pusb_dev->status = status; 583 } 584 debug(" error during command %02X" \ 585 " Stat = %lX\n", srb->cmd[0], 586 us->pusb_dev->status); 587 return result; 588 } 589 /* transfer the data payload for this command, if one exists*/ 590 591 debug("CB_transport: control msg returned %d," \ 592 " direction is %s to go 0x%lx\n", result, 593 dir_in ? "IN" : "OUT", srb->datalen); 594 if (srb->datalen) { 595 result = us_one_transfer(us, pipe, (char *)srb->pdata, 596 srb->datalen); 597 debug("CBI attempted to transfer data," \ 598 " result is %d status %lX, len %d\n", 599 result, us->pusb_dev->status, 600 us->pusb_dev->act_len); 601 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 602 break; 603 } /* if (srb->datalen) */ 604 else 605 break; 606 } 607 /* return result */ 608 609 return result; 610 } 611 612 613 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us) 614 { 615 int timeout; 616 617 us->ip_wanted = 1; 618 submit_int_msg(us->pusb_dev, us->irqpipe, 619 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 620 timeout = 1000; 621 while (timeout--) { 622 if ((volatile int *) us->ip_wanted == NULL) 623 break; 624 mdelay(10); 625 } 626 if (us->ip_wanted) { 627 printf(" Did not get interrupt on CBI\n"); 628 us->ip_wanted = 0; 629 return USB_STOR_TRANSPORT_ERROR; 630 } 631 debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n", 632 us->ip_data, us->pusb_dev->irq_act_len, 633 us->pusb_dev->irq_status); 634 /* UFI gives us ASC and ASCQ, like a request sense */ 635 if (us->subclass == US_SC_UFI) { 636 if (srb->cmd[0] == SCSI_REQ_SENSE || 637 srb->cmd[0] == SCSI_INQUIRY) 638 return USB_STOR_TRANSPORT_GOOD; /* Good */ 639 else if (us->ip_data) 640 return USB_STOR_TRANSPORT_FAILED; 641 else 642 return USB_STOR_TRANSPORT_GOOD; 643 } 644 /* otherwise, we interpret the data normally */ 645 switch (us->ip_data) { 646 case 0x0001: 647 return USB_STOR_TRANSPORT_GOOD; 648 case 0x0002: 649 return USB_STOR_TRANSPORT_FAILED; 650 default: 651 return USB_STOR_TRANSPORT_ERROR; 652 } /* switch */ 653 return USB_STOR_TRANSPORT_ERROR; 654 } 655 656 #define USB_TRANSPORT_UNKNOWN_RETRY 5 657 #define USB_TRANSPORT_NOT_READY_RETRY 10 658 659 /* clear a stall on an endpoint - special for BBB devices */ 660 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 661 { 662 int result; 663 664 /* ENDPOINT_HALT = 0, so set value to 0 */ 665 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 666 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 667 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5); 668 return result; 669 } 670 671 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 672 { 673 int result, retry; 674 int dir_in; 675 int actlen, data_actlen; 676 unsigned int pipe, pipein, pipeout; 677 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1); 678 #ifdef BBB_XPORT_TRACE 679 unsigned char *ptr; 680 int index; 681 #endif 682 683 dir_in = US_DIRECTION(srb->cmd[0]); 684 685 /* COMMAND phase */ 686 debug("COMMAND phase\n"); 687 result = usb_stor_BBB_comdat(srb, us); 688 if (result < 0) { 689 debug("failed to send CBW status %ld\n", 690 us->pusb_dev->status); 691 usb_stor_BBB_reset(us); 692 return USB_STOR_TRANSPORT_FAILED; 693 } 694 if (!(us->flags & USB_READY)) 695 mdelay(5); 696 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 697 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 698 /* DATA phase + error handling */ 699 data_actlen = 0; 700 /* no data, go immediately to the STATUS phase */ 701 if (srb->datalen == 0) 702 goto st; 703 debug("DATA phase\n"); 704 if (dir_in) 705 pipe = pipein; 706 else 707 pipe = pipeout; 708 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 709 &data_actlen, USB_CNTL_TIMEOUT * 5); 710 /* special handling of STALL in DATA phase */ 711 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 712 debug("DATA:stall\n"); 713 /* clear the STALL on the endpoint */ 714 result = usb_stor_BBB_clear_endpt_stall(us, 715 dir_in ? us->ep_in : us->ep_out); 716 if (result >= 0) 717 /* continue on to STATUS phase */ 718 goto st; 719 } 720 if (result < 0) { 721 debug("usb_bulk_msg error status %ld\n", 722 us->pusb_dev->status); 723 usb_stor_BBB_reset(us); 724 return USB_STOR_TRANSPORT_FAILED; 725 } 726 #ifdef BBB_XPORT_TRACE 727 for (index = 0; index < data_actlen; index++) 728 printf("pdata[%d] %#x ", index, srb->pdata[index]); 729 printf("\n"); 730 #endif 731 /* STATUS phase + error handling */ 732 st: 733 retry = 0; 734 again: 735 debug("STATUS phase\n"); 736 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 737 &actlen, USB_CNTL_TIMEOUT*5); 738 739 /* special handling of STALL in STATUS phase */ 740 if ((result < 0) && (retry < 1) && 741 (us->pusb_dev->status & USB_ST_STALLED)) { 742 debug("STATUS:stall\n"); 743 /* clear the STALL on the endpoint */ 744 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 745 if (result >= 0 && (retry++ < 1)) 746 /* do a retry */ 747 goto again; 748 } 749 if (result < 0) { 750 debug("usb_bulk_msg error status %ld\n", 751 us->pusb_dev->status); 752 usb_stor_BBB_reset(us); 753 return USB_STOR_TRANSPORT_FAILED; 754 } 755 #ifdef BBB_XPORT_TRACE 756 ptr = (unsigned char *)csw; 757 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 758 printf("ptr[%d] %#x ", index, ptr[index]); 759 printf("\n"); 760 #endif 761 /* misuse pipe to get the residue */ 762 pipe = le32_to_cpu(csw->dCSWDataResidue); 763 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 764 pipe = srb->datalen - data_actlen; 765 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 766 debug("!CSWSIGNATURE\n"); 767 usb_stor_BBB_reset(us); 768 return USB_STOR_TRANSPORT_FAILED; 769 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 770 debug("!Tag\n"); 771 usb_stor_BBB_reset(us); 772 return USB_STOR_TRANSPORT_FAILED; 773 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 774 debug(">PHASE\n"); 775 usb_stor_BBB_reset(us); 776 return USB_STOR_TRANSPORT_FAILED; 777 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 778 debug("=PHASE\n"); 779 usb_stor_BBB_reset(us); 780 return USB_STOR_TRANSPORT_FAILED; 781 } else if (data_actlen > srb->datalen) { 782 debug("transferred %dB instead of %ldB\n", 783 data_actlen, srb->datalen); 784 return USB_STOR_TRANSPORT_FAILED; 785 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 786 debug("FAILED\n"); 787 return USB_STOR_TRANSPORT_FAILED; 788 } 789 790 return result; 791 } 792 793 static int usb_stor_CB_transport(ccb *srb, struct us_data *us) 794 { 795 int result, status; 796 ccb *psrb; 797 ccb reqsrb; 798 int retry, notready; 799 800 psrb = &reqsrb; 801 status = USB_STOR_TRANSPORT_GOOD; 802 retry = 0; 803 notready = 0; 804 /* issue the command */ 805 do_retry: 806 result = usb_stor_CB_comdat(srb, us); 807 debug("command / Data returned %d, status %lX\n", 808 result, us->pusb_dev->status); 809 /* if this is an CBI Protocol, get IRQ */ 810 if (us->protocol == US_PR_CBI) { 811 status = usb_stor_CBI_get_status(srb, us); 812 /* if the status is error, report it */ 813 if (status == USB_STOR_TRANSPORT_ERROR) { 814 debug(" USB CBI Command Error\n"); 815 return status; 816 } 817 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 818 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 819 if (!us->ip_data) { 820 /* if the status is good, report it */ 821 if (status == USB_STOR_TRANSPORT_GOOD) { 822 debug(" USB CBI Command Good\n"); 823 return status; 824 } 825 } 826 } 827 /* do we have to issue an auto request? */ 828 /* HERE we have to check the result */ 829 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 830 debug("ERROR %lX\n", us->pusb_dev->status); 831 us->transport_reset(us); 832 return USB_STOR_TRANSPORT_ERROR; 833 } 834 if ((us->protocol == US_PR_CBI) && 835 ((srb->cmd[0] == SCSI_REQ_SENSE) || 836 (srb->cmd[0] == SCSI_INQUIRY))) { 837 /* do not issue an autorequest after request sense */ 838 debug("No auto request and good\n"); 839 return USB_STOR_TRANSPORT_GOOD; 840 } 841 /* issue an request_sense */ 842 memset(&psrb->cmd[0], 0, 12); 843 psrb->cmd[0] = SCSI_REQ_SENSE; 844 psrb->cmd[1] = srb->lun << 5; 845 psrb->cmd[4] = 18; 846 psrb->datalen = 18; 847 psrb->pdata = &srb->sense_buf[0]; 848 psrb->cmdlen = 12; 849 /* issue the command */ 850 result = usb_stor_CB_comdat(psrb, us); 851 debug("auto request returned %d\n", result); 852 /* if this is an CBI Protocol, get IRQ */ 853 if (us->protocol == US_PR_CBI) 854 status = usb_stor_CBI_get_status(psrb, us); 855 856 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 857 debug(" AUTO REQUEST ERROR %ld\n", 858 us->pusb_dev->status); 859 return USB_STOR_TRANSPORT_ERROR; 860 } 861 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 862 srb->sense_buf[0], srb->sense_buf[2], 863 srb->sense_buf[12], srb->sense_buf[13]); 864 /* Check the auto request result */ 865 if ((srb->sense_buf[2] == 0) && 866 (srb->sense_buf[12] == 0) && 867 (srb->sense_buf[13] == 0)) { 868 /* ok, no sense */ 869 return USB_STOR_TRANSPORT_GOOD; 870 } 871 872 /* Check the auto request result */ 873 switch (srb->sense_buf[2]) { 874 case 0x01: 875 /* Recovered Error */ 876 return USB_STOR_TRANSPORT_GOOD; 877 break; 878 case 0x02: 879 /* Not Ready */ 880 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 881 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 882 " 0x%02X (NOT READY)\n", srb->cmd[0], 883 srb->sense_buf[0], srb->sense_buf[2], 884 srb->sense_buf[12], srb->sense_buf[13]); 885 return USB_STOR_TRANSPORT_FAILED; 886 } else { 887 mdelay(100); 888 goto do_retry; 889 } 890 break; 891 default: 892 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 893 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 894 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 895 srb->sense_buf[2], srb->sense_buf[12], 896 srb->sense_buf[13]); 897 return USB_STOR_TRANSPORT_FAILED; 898 } else 899 goto do_retry; 900 break; 901 } 902 return USB_STOR_TRANSPORT_FAILED; 903 } 904 905 906 static int usb_inquiry(ccb *srb, struct us_data *ss) 907 { 908 int retry, i; 909 retry = 5; 910 do { 911 memset(&srb->cmd[0], 0, 12); 912 srb->cmd[0] = SCSI_INQUIRY; 913 srb->cmd[1] = srb->lun << 5; 914 srb->cmd[4] = 36; 915 srb->datalen = 36; 916 srb->cmdlen = 12; 917 i = ss->transport(srb, ss); 918 debug("inquiry returns %d\n", i); 919 if (i == 0) 920 break; 921 } while (--retry); 922 923 if (!retry) { 924 printf("error in inquiry\n"); 925 return -1; 926 } 927 return 0; 928 } 929 930 static int usb_request_sense(ccb *srb, struct us_data *ss) 931 { 932 char *ptr; 933 934 ptr = (char *)srb->pdata; 935 memset(&srb->cmd[0], 0, 12); 936 srb->cmd[0] = SCSI_REQ_SENSE; 937 srb->cmd[1] = srb->lun << 5; 938 srb->cmd[4] = 18; 939 srb->datalen = 18; 940 srb->pdata = &srb->sense_buf[0]; 941 srb->cmdlen = 12; 942 ss->transport(srb, ss); 943 debug("Request Sense returned %02X %02X %02X\n", 944 srb->sense_buf[2], srb->sense_buf[12], 945 srb->sense_buf[13]); 946 srb->pdata = (uchar *)ptr; 947 return 0; 948 } 949 950 static int usb_test_unit_ready(ccb *srb, struct us_data *ss) 951 { 952 int retries = 10; 953 954 do { 955 memset(&srb->cmd[0], 0, 12); 956 srb->cmd[0] = SCSI_TST_U_RDY; 957 srb->cmd[1] = srb->lun << 5; 958 srb->datalen = 0; 959 srb->cmdlen = 12; 960 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) { 961 ss->flags |= USB_READY; 962 return 0; 963 } 964 usb_request_sense(srb, ss); 965 /* 966 * Check the Key Code Qualifier, if it matches 967 * "Not Ready - medium not present" 968 * (the sense Key equals 0x2 and the ASC is 0x3a) 969 * return immediately as the medium being absent won't change 970 * unless there is a user action. 971 */ 972 if ((srb->sense_buf[2] == 0x02) && 973 (srb->sense_buf[12] == 0x3a)) 974 return -1; 975 mdelay(100); 976 } while (retries--); 977 978 return -1; 979 } 980 981 static int usb_read_capacity(ccb *srb, struct us_data *ss) 982 { 983 int retry; 984 /* XXX retries */ 985 retry = 3; 986 do { 987 memset(&srb->cmd[0], 0, 12); 988 srb->cmd[0] = SCSI_RD_CAPAC; 989 srb->cmd[1] = srb->lun << 5; 990 srb->datalen = 8; 991 srb->cmdlen = 12; 992 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 993 return 0; 994 } while (retry--); 995 996 return -1; 997 } 998 999 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 1000 unsigned short blocks) 1001 { 1002 memset(&srb->cmd[0], 0, 12); 1003 srb->cmd[0] = SCSI_READ10; 1004 srb->cmd[1] = srb->lun << 5; 1005 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1006 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1007 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1008 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1009 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1010 srb->cmd[8] = (unsigned char) blocks & 0xff; 1011 srb->cmdlen = 12; 1012 debug("read10: start %lx blocks %x\n", start, blocks); 1013 return ss->transport(srb, ss); 1014 } 1015 1016 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 1017 unsigned short blocks) 1018 { 1019 memset(&srb->cmd[0], 0, 12); 1020 srb->cmd[0] = SCSI_WRITE10; 1021 srb->cmd[1] = srb->lun << 5; 1022 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1023 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1024 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1025 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1026 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1027 srb->cmd[8] = (unsigned char) blocks & 0xff; 1028 srb->cmdlen = 12; 1029 debug("write10: start %lx blocks %x\n", start, blocks); 1030 return ss->transport(srb, ss); 1031 } 1032 1033 1034 #ifdef CONFIG_USB_BIN_FIXUP 1035 /* 1036 * Some USB storage devices queried for SCSI identification data respond with 1037 * binary strings, which if output to the console freeze the terminal. The 1038 * workaround is to modify the vendor and product strings read from such 1039 * device with proper values (as reported by 'usb info'). 1040 * 1041 * Vendor and product length limits are taken from the definition of 1042 * block_dev_desc_t in include/part.h. 1043 */ 1044 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1045 unsigned char vendor[], 1046 unsigned char product[]) { 1047 const unsigned char max_vendor_len = 40; 1048 const unsigned char max_product_len = 20; 1049 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1050 strncpy((char *)vendor, "SMSC", max_vendor_len); 1051 strncpy((char *)product, "Flash Media Cntrller", 1052 max_product_len); 1053 } 1054 } 1055 #endif /* CONFIG_USB_BIN_FIXUP */ 1056 1057 unsigned long usb_stor_read(int device, unsigned long blknr, 1058 lbaint_t blkcnt, void *buffer) 1059 { 1060 lbaint_t start, blks; 1061 uintptr_t buf_addr; 1062 unsigned short smallblks; 1063 struct usb_device *dev; 1064 struct us_data *ss; 1065 int retry, i; 1066 ccb *srb = &usb_ccb; 1067 1068 if (blkcnt == 0) 1069 return 0; 1070 1071 device &= 0xff; 1072 /* Setup device */ 1073 debug("\nusb_read: dev %d \n", device); 1074 dev = NULL; 1075 for (i = 0; i < USB_MAX_DEVICE; i++) { 1076 dev = usb_get_dev_index(i); 1077 if (dev == NULL) 1078 return 0; 1079 if (dev->devnum == usb_dev_desc[device].target) 1080 break; 1081 } 1082 ss = (struct us_data *)dev->privptr; 1083 1084 usb_disable_asynch(1); /* asynch transfer not allowed */ 1085 srb->lun = usb_dev_desc[device].lun; 1086 buf_addr = (unsigned long)buffer; 1087 start = blknr; 1088 blks = blkcnt; 1089 1090 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF 1091 " buffer %lx\n", device, start, blks, buf_addr); 1092 1093 do { 1094 /* XXX need some comment here */ 1095 retry = 2; 1096 srb->pdata = (unsigned char *)buf_addr; 1097 if (blks > USB_MAX_XFER_BLK) 1098 smallblks = USB_MAX_XFER_BLK; 1099 else 1100 smallblks = (unsigned short) blks; 1101 retry_it: 1102 if (smallblks == USB_MAX_XFER_BLK) 1103 usb_show_progress(); 1104 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1105 srb->pdata = (unsigned char *)buf_addr; 1106 if (usb_read_10(srb, ss, start, smallblks)) { 1107 debug("Read ERROR\n"); 1108 usb_request_sense(srb, ss); 1109 if (retry--) 1110 goto retry_it; 1111 blkcnt -= blks; 1112 break; 1113 } 1114 start += smallblks; 1115 blks -= smallblks; 1116 buf_addr += srb->datalen; 1117 } while (blks != 0); 1118 ss->flags &= ~USB_READY; 1119 1120 debug("usb_read: end startblk " LBAF 1121 ", blccnt %x buffer %lx\n", 1122 start, smallblks, buf_addr); 1123 1124 usb_disable_asynch(0); /* asynch transfer allowed */ 1125 if (blkcnt >= USB_MAX_XFER_BLK) 1126 debug("\n"); 1127 return blkcnt; 1128 } 1129 1130 unsigned long usb_stor_write(int device, unsigned long blknr, 1131 lbaint_t blkcnt, const void *buffer) 1132 { 1133 lbaint_t start, blks; 1134 uintptr_t buf_addr; 1135 unsigned short smallblks; 1136 struct usb_device *dev; 1137 struct us_data *ss; 1138 int retry, i; 1139 ccb *srb = &usb_ccb; 1140 1141 if (blkcnt == 0) 1142 return 0; 1143 1144 device &= 0xff; 1145 /* Setup device */ 1146 debug("\nusb_write: dev %d \n", device); 1147 dev = NULL; 1148 for (i = 0; i < USB_MAX_DEVICE; i++) { 1149 dev = usb_get_dev_index(i); 1150 if (dev == NULL) 1151 return 0; 1152 if (dev->devnum == usb_dev_desc[device].target) 1153 break; 1154 } 1155 ss = (struct us_data *)dev->privptr; 1156 1157 usb_disable_asynch(1); /* asynch transfer not allowed */ 1158 1159 srb->lun = usb_dev_desc[device].lun; 1160 buf_addr = (unsigned long)buffer; 1161 start = blknr; 1162 blks = blkcnt; 1163 1164 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF 1165 " buffer %lx\n", device, start, blks, buf_addr); 1166 1167 do { 1168 /* If write fails retry for max retry count else 1169 * return with number of blocks written successfully. 1170 */ 1171 retry = 2; 1172 srb->pdata = (unsigned char *)buf_addr; 1173 if (blks > USB_MAX_XFER_BLK) 1174 smallblks = USB_MAX_XFER_BLK; 1175 else 1176 smallblks = (unsigned short) blks; 1177 retry_it: 1178 if (smallblks == USB_MAX_XFER_BLK) 1179 usb_show_progress(); 1180 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1181 srb->pdata = (unsigned char *)buf_addr; 1182 if (usb_write_10(srb, ss, start, smallblks)) { 1183 debug("Write ERROR\n"); 1184 usb_request_sense(srb, ss); 1185 if (retry--) 1186 goto retry_it; 1187 blkcnt -= blks; 1188 break; 1189 } 1190 start += smallblks; 1191 blks -= smallblks; 1192 buf_addr += srb->datalen; 1193 } while (blks != 0); 1194 ss->flags &= ~USB_READY; 1195 1196 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %lx\n", 1197 start, smallblks, buf_addr); 1198 1199 usb_disable_asynch(0); /* asynch transfer allowed */ 1200 if (blkcnt >= USB_MAX_XFER_BLK) 1201 debug("\n"); 1202 return blkcnt; 1203 1204 } 1205 1206 /* Probe to see if a new device is actually a Storage device */ 1207 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1208 struct us_data *ss) 1209 { 1210 struct usb_interface *iface; 1211 int i; 1212 struct usb_endpoint_descriptor *ep_desc; 1213 unsigned int flags = 0; 1214 1215 int protocol = 0; 1216 int subclass = 0; 1217 1218 /* let's examine the device now */ 1219 iface = &dev->config.if_desc[ifnum]; 1220 1221 #if 0 1222 /* this is the place to patch some storage devices */ 1223 debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor, 1224 dev->descriptor.idProduct); 1225 1226 if ((dev->descriptor.idVendor) == 0x066b && 1227 (dev->descriptor.idProduct) == 0x0103) { 1228 debug("patched for E-USB\n"); 1229 protocol = US_PR_CB; 1230 subclass = US_SC_UFI; /* an assumption */ 1231 } 1232 #endif 1233 1234 if (dev->descriptor.bDeviceClass != 0 || 1235 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1236 iface->desc.bInterfaceSubClass < US_SC_MIN || 1237 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1238 /* if it's not a mass storage, we go no further */ 1239 return 0; 1240 } 1241 1242 memset(ss, 0, sizeof(struct us_data)); 1243 1244 /* At this point, we know we've got a live one */ 1245 debug("\n\nUSB Mass Storage device detected\n"); 1246 1247 /* Initialize the us_data structure with some useful info */ 1248 ss->flags = flags; 1249 ss->ifnum = ifnum; 1250 ss->pusb_dev = dev; 1251 ss->attention_done = 0; 1252 1253 /* If the device has subclass and protocol, then use that. Otherwise, 1254 * take data from the specific interface. 1255 */ 1256 if (subclass) { 1257 ss->subclass = subclass; 1258 ss->protocol = protocol; 1259 } else { 1260 ss->subclass = iface->desc.bInterfaceSubClass; 1261 ss->protocol = iface->desc.bInterfaceProtocol; 1262 } 1263 1264 /* set the handler pointers based on the protocol */ 1265 debug("Transport: "); 1266 switch (ss->protocol) { 1267 case US_PR_CB: 1268 debug("Control/Bulk\n"); 1269 ss->transport = usb_stor_CB_transport; 1270 ss->transport_reset = usb_stor_CB_reset; 1271 break; 1272 1273 case US_PR_CBI: 1274 debug("Control/Bulk/Interrupt\n"); 1275 ss->transport = usb_stor_CB_transport; 1276 ss->transport_reset = usb_stor_CB_reset; 1277 break; 1278 case US_PR_BULK: 1279 debug("Bulk/Bulk/Bulk\n"); 1280 ss->transport = usb_stor_BBB_transport; 1281 ss->transport_reset = usb_stor_BBB_reset; 1282 break; 1283 default: 1284 printf("USB Storage Transport unknown / not yet implemented\n"); 1285 return 0; 1286 break; 1287 } 1288 1289 /* 1290 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1291 * An optional interrupt is OK (necessary for CBI protocol). 1292 * We will ignore any others. 1293 */ 1294 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1295 ep_desc = &iface->ep_desc[i]; 1296 /* is it an BULK endpoint? */ 1297 if ((ep_desc->bmAttributes & 1298 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1299 if (ep_desc->bEndpointAddress & USB_DIR_IN) 1300 ss->ep_in = ep_desc->bEndpointAddress & 1301 USB_ENDPOINT_NUMBER_MASK; 1302 else 1303 ss->ep_out = 1304 ep_desc->bEndpointAddress & 1305 USB_ENDPOINT_NUMBER_MASK; 1306 } 1307 1308 /* is it an interrupt endpoint? */ 1309 if ((ep_desc->bmAttributes & 1310 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1311 ss->ep_int = ep_desc->bEndpointAddress & 1312 USB_ENDPOINT_NUMBER_MASK; 1313 ss->irqinterval = ep_desc->bInterval; 1314 } 1315 } 1316 debug("Endpoints In %d Out %d Int %d\n", 1317 ss->ep_in, ss->ep_out, ss->ep_int); 1318 1319 /* Do some basic sanity checks, and bail if we find a problem */ 1320 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1321 !ss->ep_in || !ss->ep_out || 1322 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1323 debug("Problems with device\n"); 1324 return 0; 1325 } 1326 /* set class specific stuff */ 1327 /* We only handle certain protocols. Currently, these are 1328 * the only ones. 1329 * The SFF8070 accepts the requests used in u-boot 1330 */ 1331 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1332 ss->subclass != US_SC_8070) { 1333 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1334 return 0; 1335 } 1336 if (ss->ep_int) { 1337 /* we had found an interrupt endpoint, prepare irq pipe 1338 * set up the IRQ pipe and handler 1339 */ 1340 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1341 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1342 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1343 dev->irq_handle = usb_stor_irq; 1344 } 1345 dev->privptr = (void *)ss; 1346 return 1; 1347 } 1348 1349 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1350 block_dev_desc_t *dev_desc) 1351 { 1352 unsigned char perq, modi; 1353 ALLOC_CACHE_ALIGN_BUFFER(unsigned long, cap, 2); 1354 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, usb_stor_buf, 36); 1355 unsigned long *capacity, *blksz; 1356 ccb *pccb = &usb_ccb; 1357 1358 pccb->pdata = usb_stor_buf; 1359 1360 dev_desc->target = dev->devnum; 1361 pccb->lun = dev_desc->lun; 1362 debug(" address %d\n", dev_desc->target); 1363 1364 if (usb_inquiry(pccb, ss)) 1365 return -1; 1366 1367 perq = usb_stor_buf[0]; 1368 modi = usb_stor_buf[1]; 1369 1370 if ((perq & 0x1f) == 0x1f) { 1371 /* skip unknown devices */ 1372 return 0; 1373 } 1374 if ((modi&0x80) == 0x80) { 1375 /* drive is removable */ 1376 dev_desc->removable = 1; 1377 } 1378 memcpy(&dev_desc->vendor[0], (const void *) &usb_stor_buf[8], 8); 1379 memcpy(&dev_desc->product[0], (const void *) &usb_stor_buf[16], 16); 1380 memcpy(&dev_desc->revision[0], (const void *) &usb_stor_buf[32], 4); 1381 dev_desc->vendor[8] = 0; 1382 dev_desc->product[16] = 0; 1383 dev_desc->revision[4] = 0; 1384 #ifdef CONFIG_USB_BIN_FIXUP 1385 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1386 (uchar *)dev_desc->product); 1387 #endif /* CONFIG_USB_BIN_FIXUP */ 1388 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1389 usb_stor_buf[3]); 1390 if (usb_test_unit_ready(pccb, ss)) { 1391 printf("Device NOT ready\n" 1392 " Request Sense returned %02X %02X %02X\n", 1393 pccb->sense_buf[2], pccb->sense_buf[12], 1394 pccb->sense_buf[13]); 1395 if (dev_desc->removable == 1) { 1396 dev_desc->type = perq; 1397 return 1; 1398 } 1399 return 0; 1400 } 1401 pccb->pdata = (unsigned char *)&cap[0]; 1402 memset(pccb->pdata, 0, 8); 1403 if (usb_read_capacity(pccb, ss) != 0) { 1404 printf("READ_CAP ERROR\n"); 1405 cap[0] = 2880; 1406 cap[1] = 0x200; 1407 } 1408 ss->flags &= ~USB_READY; 1409 debug("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0], cap[1]); 1410 #if 0 1411 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1412 cap[0] >>= 16; 1413 #endif 1414 cap[0] = cpu_to_be32(cap[0]); 1415 cap[1] = cpu_to_be32(cap[1]); 1416 1417 /* this assumes bigendian! */ 1418 cap[0] += 1; 1419 capacity = &cap[0]; 1420 blksz = &cap[1]; 1421 debug("Capacity = 0x%lx, blocksz = 0x%lx\n", *capacity, *blksz); 1422 dev_desc->lba = *capacity; 1423 dev_desc->blksz = *blksz; 1424 dev_desc->log2blksz = LOG2(dev_desc->blksz); 1425 dev_desc->type = perq; 1426 debug(" address %d\n", dev_desc->target); 1427 debug("partype: %d\n", dev_desc->part_type); 1428 1429 init_part(dev_desc); 1430 1431 debug("partype: %d\n", dev_desc->part_type); 1432 return 1; 1433 } 1434