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