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 unsigned long max_xfer_blk; /* Max blocks per xfer */ 155 ccb *srb; /* current srb */ 156 trans_reset transport_reset; /* reset routine */ 157 trans_cmnd transport; /* transport routine */ 158 }; 159 160 static struct us_data usb_stor[USB_MAX_STOR_DEV]; 161 162 163 #define USB_STOR_TRANSPORT_GOOD 0 164 #define USB_STOR_TRANSPORT_FAILED -1 165 #define USB_STOR_TRANSPORT_ERROR -2 166 167 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, 168 block_dev_desc_t *dev_desc); 169 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 170 struct us_data *ss); 171 unsigned long usb_stor_read(int device, unsigned long blknr, 172 unsigned long blkcnt, void *buffer); 173 unsigned long usb_stor_write(int device, unsigned long blknr, 174 unsigned long blkcnt, const void *buffer); 175 struct usb_device * usb_get_dev_index(int index); 176 void uhci_show_temp_int_td(void); 177 178 #ifdef CONFIG_PARTITIONS 179 block_dev_desc_t *usb_stor_get_dev(int index) 180 { 181 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL; 182 } 183 #endif 184 185 void usb_show_progress(void) 186 { 187 debug("."); 188 } 189 190 /******************************************************************************* 191 * show info on storage devices; 'usb start/init' must be invoked earlier 192 * as we only retrieve structures populated during devices initialization 193 */ 194 int usb_stor_info(void) 195 { 196 int i; 197 198 if (usb_max_devs > 0) { 199 for (i = 0; i < usb_max_devs; i++) { 200 printf(" Device %d: ", i); 201 dev_print(&usb_dev_desc[i]); 202 } 203 return 0; 204 } 205 206 printf("No storage devices, perhaps not 'usb start'ed..?\n"); 207 return 1; 208 } 209 210 static unsigned int usb_get_max_lun(struct us_data *us) 211 { 212 int len; 213 unsigned char result; 214 len = usb_control_msg(us->pusb_dev, 215 usb_rcvctrlpipe(us->pusb_dev, 0), 216 US_BBB_GET_MAX_LUN, 217 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 218 0, us->ifnum, 219 &result, sizeof(result), 220 USB_CNTL_TIMEOUT * 5); 221 USB_STOR_PRINTF("Get Max LUN -> len = %i, result = %i\n", 222 len, (int) result); 223 return (len > 0) ? result : 0; 224 } 225 226 /******************************************************************************* 227 * scan the usb and reports device info 228 * to the user if mode = 1 229 * returns current device or -1 if no 230 */ 231 int usb_stor_scan(int mode) 232 { 233 unsigned char i; 234 struct usb_device *dev; 235 236 /* GJ */ 237 memset(usb_stor_buf, 0, sizeof(usb_stor_buf)); 238 239 if (mode == 1) 240 printf(" scanning bus for storage devices... "); 241 242 usb_disable_asynch(1); /* asynch transfer not allowed */ 243 244 for (i = 0; i < USB_MAX_STOR_DEV; i++) { 245 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t)); 246 usb_dev_desc[i].if_type = IF_TYPE_USB; 247 usb_dev_desc[i].dev = i; 248 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN; 249 usb_dev_desc[i].target = 0xff; 250 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN; 251 usb_dev_desc[i].block_read = usb_stor_read; 252 usb_dev_desc[i].block_write = usb_stor_write; 253 } 254 255 usb_max_devs = 0; 256 for (i = 0; i < USB_MAX_DEVICE; i++) { 257 dev = usb_get_dev_index(i); /* get device */ 258 USB_STOR_PRINTF("i=%d\n", i); 259 if (dev == NULL) 260 break; /* no more devices available */ 261 262 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) { 263 /* OK, it's a storage device. Iterate over its LUNs 264 * and populate `usb_dev_desc'. 265 */ 266 int lun, max_lun, start = usb_max_devs; 267 268 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 269 for (lun = 0; 270 lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; 271 lun++) { 272 usb_dev_desc[usb_max_devs].lun = lun; 273 if (usb_stor_get_info(dev, &usb_stor[start], 274 &usb_dev_desc[usb_max_devs]) == 1) { 275 usb_max_devs++; 276 } 277 } 278 } 279 /* if storage device */ 280 if (usb_max_devs == USB_MAX_STOR_DEV) { 281 printf("max USB Storage Device reached: %d stopping\n", 282 usb_max_devs); 283 break; 284 } 285 } /* for */ 286 287 usb_disable_asynch(0); /* asynch transfer allowed */ 288 printf("%d Storage Device(s) found\n", usb_max_devs); 289 if (usb_max_devs > 0) 290 return 0; 291 return -1; 292 } 293 294 static int usb_stor_irq(struct usb_device *dev) 295 { 296 struct us_data *us; 297 us = (struct us_data *)dev->privptr; 298 299 if (us->ip_wanted) 300 us->ip_wanted = 0; 301 return 0; 302 } 303 304 305 #ifdef USB_STOR_DEBUG 306 307 static void usb_show_srb(ccb *pccb) 308 { 309 int i; 310 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 311 for (i = 0; i < 12; i++) 312 printf("%02X ", pccb->cmd[i]); 313 printf("\n"); 314 } 315 316 static void display_int_status(unsigned long tmp) 317 { 318 printf("Status: %s %s %s %s %s %s %s\n", 319 (tmp & USB_ST_ACTIVE) ? "Active" : "", 320 (tmp & USB_ST_STALLED) ? "Stalled" : "", 321 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 322 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 323 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 324 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 325 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 326 } 327 #endif 328 /*********************************************************************** 329 * Data transfer routines 330 ***********************************************************************/ 331 332 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 333 { 334 int max_size; 335 int this_xfer; 336 int result; 337 int partial; 338 int maxtry; 339 int stat; 340 341 /* determine the maximum packet size for these transfers */ 342 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 343 344 /* while we have data left to transfer */ 345 while (length) { 346 347 /* calculate how long this will be -- maximum or a remainder */ 348 this_xfer = length > max_size ? max_size : length; 349 length -= this_xfer; 350 351 /* setup the retry counter */ 352 maxtry = 10; 353 354 /* set up the transfer loop */ 355 do { 356 /* transfer the data */ 357 USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n", 358 (unsigned int)buf, this_xfer, 11 - maxtry); 359 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 360 this_xfer, &partial, 361 USB_CNTL_TIMEOUT * 5); 362 USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n", 363 result, partial, this_xfer); 364 if (us->pusb_dev->status != 0) { 365 /* if we stall, we need to clear it before 366 * we go on 367 */ 368 #ifdef USB_STOR_DEBUG 369 display_int_status(us->pusb_dev->status); 370 #endif 371 if (us->pusb_dev->status & USB_ST_STALLED) { 372 USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe); 373 stat = us->pusb_dev->status; 374 usb_clear_halt(us->pusb_dev, pipe); 375 us->pusb_dev->status = stat; 376 if (this_xfer == partial) { 377 USB_STOR_PRINTF("bulk transferred with error %lX, but data ok\n", us->pusb_dev->status); 378 return 0; 379 } 380 else 381 return result; 382 } 383 if (us->pusb_dev->status & USB_ST_NAK_REC) { 384 USB_STOR_PRINTF("Device NAKed bulk_msg\n"); 385 return result; 386 } 387 USB_STOR_PRINTF("bulk transferred with error"); 388 if (this_xfer == partial) { 389 USB_STOR_PRINTF(" %ld, but data ok\n", 390 us->pusb_dev->status); 391 return 0; 392 } 393 /* if our try counter reaches 0, bail out */ 394 USB_STOR_PRINTF(" %ld, data %d\n", 395 us->pusb_dev->status, partial); 396 if (!maxtry--) 397 return result; 398 } 399 /* update to show what data was transferred */ 400 this_xfer -= partial; 401 buf += partial; 402 /* continue until this transfer is done */ 403 } while (this_xfer); 404 } 405 406 /* if we get here, we're done and successful */ 407 return 0; 408 } 409 410 static int usb_stor_BBB_reset(struct us_data *us) 411 { 412 int result; 413 unsigned int pipe; 414 415 /* 416 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 417 * 418 * For Reset Recovery the host shall issue in the following order: 419 * a) a Bulk-Only Mass Storage Reset 420 * b) a Clear Feature HALT to the Bulk-In endpoint 421 * c) a Clear Feature HALT to the Bulk-Out endpoint 422 * 423 * This is done in 3 steps. 424 * 425 * If the reset doesn't succeed, the device should be port reset. 426 * 427 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 428 */ 429 USB_STOR_PRINTF("BBB_reset\n"); 430 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 431 US_BBB_RESET, 432 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 433 0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5); 434 435 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 436 USB_STOR_PRINTF("RESET:stall\n"); 437 return -1; 438 } 439 440 /* long wait for reset */ 441 wait_ms(150); 442 USB_STOR_PRINTF("BBB_reset result %d: status %lX reset\n", result, 443 us->pusb_dev->status); 444 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 445 result = usb_clear_halt(us->pusb_dev, pipe); 446 /* long wait for reset */ 447 wait_ms(150); 448 USB_STOR_PRINTF("BBB_reset result %d: status %lX clearing IN endpoint\n", 449 result, us->pusb_dev->status); 450 /* long wait for reset */ 451 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 452 result = usb_clear_halt(us->pusb_dev, pipe); 453 wait_ms(150); 454 USB_STOR_PRINTF("BBB_reset result %d: status %lX" 455 " clearing OUT endpoint\n", result, 456 us->pusb_dev->status); 457 USB_STOR_PRINTF("BBB_reset done\n"); 458 return 0; 459 } 460 461 /* FIXME: this reset function doesn't really reset the port, and it 462 * should. Actually it should probably do what it's doing here, and 463 * reset the port physically 464 */ 465 static int usb_stor_CB_reset(struct us_data *us) 466 { 467 unsigned char cmd[12]; 468 int result; 469 470 USB_STOR_PRINTF("CB_reset\n"); 471 memset(cmd, 0xff, sizeof(cmd)); 472 cmd[0] = SCSI_SEND_DIAG; 473 cmd[1] = 4; 474 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 475 US_CBI_ADSC, 476 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 477 0, us->ifnum, cmd, sizeof(cmd), 478 USB_CNTL_TIMEOUT * 5); 479 480 /* long wait for reset */ 481 wait_ms(1500); 482 USB_STOR_PRINTF("CB_reset result %d: status %lX" 483 " clearing endpoint halt\n", result, 484 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 USB_STOR_PRINTF("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 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 umass_bbb_cbw_t cbw; 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 %d 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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("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 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 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry); 561 #ifdef USB_STOR_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 USB_STOR_PRINTF("CB_transport: control msg returned %d," 573 " status %lX\n", 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 USB_STOR_PRINTF(" 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 USB_STOR_PRINTF(" 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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("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 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 == 0) 623 break; 624 wait_ms(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 USB_STOR_PRINTF 632 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n", 633 us->ip_data, us->pusb_dev->irq_act_len, 634 us->pusb_dev->irq_status); 635 /* UFI gives us ASC and ASCQ, like a request sense */ 636 if (us->subclass == US_SC_UFI) { 637 if (srb->cmd[0] == SCSI_REQ_SENSE || 638 srb->cmd[0] == SCSI_INQUIRY) 639 return USB_STOR_TRANSPORT_GOOD; /* Good */ 640 else if (us->ip_data) 641 return USB_STOR_TRANSPORT_FAILED; 642 else 643 return USB_STOR_TRANSPORT_GOOD; 644 } 645 /* otherwise, we interpret the data normally */ 646 switch (us->ip_data) { 647 case 0x0001: 648 return USB_STOR_TRANSPORT_GOOD; 649 case 0x0002: 650 return USB_STOR_TRANSPORT_FAILED; 651 default: 652 return USB_STOR_TRANSPORT_ERROR; 653 } /* switch */ 654 return USB_STOR_TRANSPORT_ERROR; 655 } 656 657 #define USB_TRANSPORT_UNKNOWN_RETRY 5 658 #define USB_TRANSPORT_NOT_READY_RETRY 10 659 660 /* clear a stall on an endpoint - special for BBB devices */ 661 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 662 { 663 int result; 664 665 /* ENDPOINT_HALT = 0, so set value to 0 */ 666 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 667 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 668 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5); 669 return result; 670 } 671 672 int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 673 { 674 int result, retry; 675 int dir_in; 676 int actlen, data_actlen; 677 unsigned int pipe, pipein, pipeout; 678 umass_bbb_csw_t csw; 679 #ifdef BBB_XPORT_TRACE 680 unsigned char *ptr; 681 int index; 682 #endif 683 684 dir_in = US_DIRECTION(srb->cmd[0]); 685 686 /* COMMAND phase */ 687 USB_STOR_PRINTF("COMMAND phase\n"); 688 result = usb_stor_BBB_comdat(srb, us); 689 if (result < 0) { 690 USB_STOR_PRINTF("failed to send CBW status %ld\n", 691 us->pusb_dev->status); 692 usb_stor_BBB_reset(us); 693 return USB_STOR_TRANSPORT_FAILED; 694 } 695 wait_ms(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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("!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 USB_STOR_PRINTF("!Tag\n"); 771 usb_stor_BBB_reset(us); 772 return USB_STOR_TRANSPORT_FAILED; 773 } else if (csw.bCSWStatus > CSWSTATUS_PHASE) { 774 USB_STOR_PRINTF(">PHASE\n"); 775 usb_stor_BBB_reset(us); 776 return USB_STOR_TRANSPORT_FAILED; 777 } else if (csw.bCSWStatus == CSWSTATUS_PHASE) { 778 USB_STOR_PRINTF("=PHASE\n"); 779 usb_stor_BBB_reset(us); 780 return USB_STOR_TRANSPORT_FAILED; 781 } else if (data_actlen > srb->datalen) { 782 USB_STOR_PRINTF("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 USB_STOR_PRINTF("FAILED\n"); 787 return USB_STOR_TRANSPORT_FAILED; 788 } 789 790 return result; 791 } 792 793 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 USB_STOR_PRINTF("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 USB_STOR_PRINTF(" 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 USB_STOR_PRINTF(" 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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("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 USB_STOR_PRINTF(" AUTO REQUEST ERROR %ld\n", 858 us->pusb_dev->status); 859 return USB_STOR_TRANSPORT_ERROR; 860 } 861 USB_STOR_PRINTF("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 wait_ms(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 USB_STOR_PRINTF("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 USB_STOR_PRINTF("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 return 0; 962 usb_request_sense(srb, ss); 963 wait_ms(100); 964 } while (retries--); 965 966 return -1; 967 } 968 969 static int usb_read_capacity(ccb *srb, struct us_data *ss) 970 { 971 int retry; 972 /* XXX retries */ 973 retry = 3; 974 do { 975 memset(&srb->cmd[0], 0, 12); 976 srb->cmd[0] = SCSI_RD_CAPAC; 977 srb->cmd[1] = srb->lun << 5; 978 srb->datalen = 8; 979 srb->cmdlen = 12; 980 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 981 return 0; 982 } while (retry--); 983 984 return -1; 985 } 986 987 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 988 unsigned short blocks) 989 { 990 memset(&srb->cmd[0], 0, 12); 991 srb->cmd[0] = SCSI_READ10; 992 srb->cmd[1] = srb->lun << 5; 993 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 994 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 995 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 996 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 997 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 998 srb->cmd[8] = (unsigned char) blocks & 0xff; 999 srb->cmdlen = 12; 1000 USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks); 1001 return ss->transport(srb, ss); 1002 } 1003 1004 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 1005 unsigned short blocks) 1006 { 1007 memset(&srb->cmd[0], 0, 12); 1008 srb->cmd[0] = SCSI_WRITE10; 1009 srb->cmd[1] = srb->lun << 5; 1010 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1011 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1012 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1013 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1014 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1015 srb->cmd[8] = (unsigned char) blocks & 0xff; 1016 srb->cmdlen = 12; 1017 USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks); 1018 return ss->transport(srb, ss); 1019 } 1020 1021 1022 #ifdef CONFIG_USB_BIN_FIXUP 1023 /* 1024 * Some USB storage devices queried for SCSI identification data respond with 1025 * binary strings, which if output to the console freeze the terminal. The 1026 * workaround is to modify the vendor and product strings read from such 1027 * device with proper values (as reported by 'usb info'). 1028 * 1029 * Vendor and product length limits are taken from the definition of 1030 * block_dev_desc_t in include/part.h. 1031 */ 1032 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1033 unsigned char vendor[], 1034 unsigned char product[]) { 1035 const unsigned char max_vendor_len = 40; 1036 const unsigned char max_product_len = 20; 1037 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1038 strncpy((char *)vendor, "SMSC", max_vendor_len); 1039 strncpy((char *)product, "Flash Media Cntrller", 1040 max_product_len); 1041 } 1042 } 1043 #endif /* CONFIG_USB_BIN_FIXUP */ 1044 1045 unsigned long usb_stor_read(int device, unsigned long blknr, 1046 unsigned long blkcnt, void *buffer) 1047 { 1048 unsigned long start, blks, buf_addr; 1049 unsigned short smallblks; 1050 struct usb_device *dev; 1051 struct us_data *ss; 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 ss = (struct us_data *)dev->privptr; 1070 1071 usb_disable_asynch(1); /* asynch transfer not allowed */ 1072 srb->lun = usb_dev_desc[device].lun; 1073 buf_addr = (unsigned long)buffer; 1074 start = blknr; 1075 blks = blkcnt; 1076 if (usb_test_unit_ready(srb, ss)) { 1077 printf("Device NOT ready\n Request Sense returned %02X %02X" 1078 " %02X\n", srb->sense_buf[2], srb->sense_buf[12], 1079 srb->sense_buf[13]); 1080 return 0; 1081 } 1082 1083 USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx" 1084 " buffer %lx\n", device, start, blks, buf_addr); 1085 1086 do { 1087 /* XXX need some comment here */ 1088 retry = 2; 1089 srb->pdata = (unsigned char *)buf_addr; 1090 if (blks > ss->max_xfer_blk) 1091 smallblks = ss->max_xfer_blk; 1092 else 1093 smallblks = (unsigned short) blks; 1094 retry_it: 1095 if (smallblks == ss->max_xfer_blk) 1096 usb_show_progress(); 1097 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1098 srb->pdata = (unsigned char *)buf_addr; 1099 if (usb_read_10(srb, ss, start, smallblks)) { 1100 USB_STOR_PRINTF("Read ERROR\n"); 1101 usb_request_sense(srb, ss); 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 >= ss->max_xfer_blk) 1117 debug("\n"); 1118 return blkcnt; 1119 } 1120 1121 unsigned long usb_stor_write(int device, unsigned long blknr, 1122 unsigned long blkcnt, const void *buffer) 1123 { 1124 unsigned long start, blks, buf_addr; 1125 unsigned short smallblks; 1126 struct usb_device *dev; 1127 struct us_data *ss; 1128 int retry, i; 1129 ccb *srb = &usb_ccb; 1130 1131 if (blkcnt == 0) 1132 return 0; 1133 1134 device &= 0xff; 1135 /* Setup device */ 1136 USB_STOR_PRINTF("\nusb_write: dev %d \n", device); 1137 dev = NULL; 1138 for (i = 0; i < USB_MAX_DEVICE; i++) { 1139 dev = usb_get_dev_index(i); 1140 if (dev == NULL) 1141 return 0; 1142 if (dev->devnum == usb_dev_desc[device].target) 1143 break; 1144 } 1145 ss = (struct us_data *)dev->privptr; 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, ss)) { 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 > ss->max_xfer_blk) 1170 smallblks = ss->max_xfer_blk; 1171 else 1172 smallblks = (unsigned short) blks; 1173 retry_it: 1174 if (smallblks == ss->max_xfer_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, ss, start, smallblks)) { 1179 USB_STOR_PRINTF("Write ERROR\n"); 1180 usb_request_sense(srb, ss); 1181 if (retry--) 1182 goto retry_it; 1183 blkcnt -= blks; 1184 break; 1185 } 1186 start += smallblks; 1187 blks -= smallblks; 1188 buf_addr += srb->datalen; 1189 } while (blks != 0); 1190 1191 USB_STOR_PRINTF("usb_write: end startblk %lx, blccnt %x buffer %lx\n", 1192 start, smallblks, buf_addr); 1193 1194 usb_disable_asynch(0); /* asynch transfer allowed */ 1195 if (blkcnt >= ss->max_xfer_blk) 1196 debug("\n"); 1197 return blkcnt; 1198 1199 } 1200 1201 /* Probe to see if a new device is actually a Storage device */ 1202 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1203 struct us_data *ss) 1204 { 1205 struct usb_interface *iface; 1206 int i; 1207 unsigned int flags = 0; 1208 1209 int protocol = 0; 1210 int subclass = 0; 1211 1212 /* let's examine the device now */ 1213 iface = &dev->config.if_desc[ifnum]; 1214 1215 #if 0 1216 /* this is the place to patch some storage devices */ 1217 USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor, 1218 dev->descriptor.idProduct); 1219 1220 if ((dev->descriptor.idVendor) == 0x066b && 1221 (dev->descriptor.idProduct) == 0x0103) { 1222 USB_STOR_PRINTF("patched for E-USB\n"); 1223 protocol = US_PR_CB; 1224 subclass = US_SC_UFI; /* an assumption */ 1225 } 1226 #endif 1227 1228 if (dev->descriptor.bDeviceClass != 0 || 1229 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1230 iface->desc.bInterfaceSubClass < US_SC_MIN || 1231 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1232 /* if it's not a mass storage, we go no further */ 1233 return 0; 1234 } 1235 1236 memset(ss, 0, sizeof(struct us_data)); 1237 1238 /* At this point, we know we've got a live one */ 1239 USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n"); 1240 1241 /* Initialize the us_data structure with some useful info */ 1242 ss->flags = flags; 1243 ss->ifnum = ifnum; 1244 ss->pusb_dev = dev; 1245 ss->attention_done = 0; 1246 1247 /* If the device has subclass and protocol, then use that. Otherwise, 1248 * take data from the specific interface. 1249 */ 1250 if (subclass) { 1251 ss->subclass = subclass; 1252 ss->protocol = protocol; 1253 } else { 1254 ss->subclass = iface->desc.bInterfaceSubClass; 1255 ss->protocol = iface->desc.bInterfaceProtocol; 1256 } 1257 1258 /* set the handler pointers based on the protocol */ 1259 USB_STOR_PRINTF("Transport: "); 1260 switch (ss->protocol) { 1261 case US_PR_CB: 1262 USB_STOR_PRINTF("Control/Bulk\n"); 1263 ss->transport = usb_stor_CB_transport; 1264 ss->transport_reset = usb_stor_CB_reset; 1265 break; 1266 1267 case US_PR_CBI: 1268 USB_STOR_PRINTF("Control/Bulk/Interrupt\n"); 1269 ss->transport = usb_stor_CB_transport; 1270 ss->transport_reset = usb_stor_CB_reset; 1271 break; 1272 case US_PR_BULK: 1273 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n"); 1274 ss->transport = usb_stor_BBB_transport; 1275 ss->transport_reset = usb_stor_BBB_reset; 1276 break; 1277 default: 1278 printf("USB Storage Transport unknown / not yet implemented\n"); 1279 return 0; 1280 break; 1281 } 1282 1283 /* 1284 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1285 * An optional interrupt is OK (necessary for CBI protocol). 1286 * We will ignore any others. 1287 */ 1288 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1289 /* is it an BULK endpoint? */ 1290 if ((iface->ep_desc[i].bmAttributes & 1291 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1292 if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN) 1293 ss->ep_in = iface->ep_desc[i].bEndpointAddress & 1294 USB_ENDPOINT_NUMBER_MASK; 1295 else 1296 ss->ep_out = 1297 iface->ep_desc[i].bEndpointAddress & 1298 USB_ENDPOINT_NUMBER_MASK; 1299 } 1300 1301 /* is it an interrupt endpoint? */ 1302 if ((iface->ep_desc[i].bmAttributes & 1303 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1304 ss->ep_int = iface->ep_desc[i].bEndpointAddress & 1305 USB_ENDPOINT_NUMBER_MASK; 1306 ss->irqinterval = iface->ep_desc[i].bInterval; 1307 } 1308 } 1309 USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n", 1310 ss->ep_in, ss->ep_out, ss->ep_int); 1311 1312 /* Do some basic sanity checks, and bail if we find a problem */ 1313 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1314 !ss->ep_in || !ss->ep_out || 1315 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1316 USB_STOR_PRINTF("Problems with device\n"); 1317 return 0; 1318 } 1319 /* set class specific stuff */ 1320 /* We only handle certain protocols. Currently, these are 1321 * the only ones. 1322 * The SFF8070 accepts the requests used in u-boot 1323 */ 1324 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1325 ss->subclass != US_SC_8070) { 1326 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1327 return 0; 1328 } 1329 if (ss->ep_int) { 1330 /* we had found an interrupt endpoint, prepare irq pipe 1331 * set up the IRQ pipe and handler 1332 */ 1333 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1334 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1335 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1336 dev->irq_handle = usb_stor_irq; 1337 } 1338 dev->privptr = (void *)ss; 1339 return 1; 1340 } 1341 1342 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1343 block_dev_desc_t *dev_desc) 1344 { 1345 unsigned char perq, modi; 1346 unsigned long cap[2]; 1347 unsigned long *capacity, *blksz; 1348 ccb *pccb = &usb_ccb; 1349 1350 pccb->pdata = usb_stor_buf; 1351 1352 dev_desc->target = dev->devnum; 1353 pccb->lun = dev_desc->lun; 1354 USB_STOR_PRINTF(" address %d\n", dev_desc->target); 1355 1356 if (usb_inquiry(pccb, ss)) 1357 return -1; 1358 1359 perq = usb_stor_buf[0]; 1360 modi = usb_stor_buf[1]; 1361 1362 if ((perq & 0x1f) == 0x1f) { 1363 /* skip unknown devices */ 1364 return 0; 1365 } 1366 if ((modi&0x80) == 0x80) { 1367 /* drive is removable */ 1368 dev_desc->removable = 1; 1369 } 1370 memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8); 1371 memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16); 1372 memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4); 1373 dev_desc->vendor[8] = 0; 1374 dev_desc->product[16] = 0; 1375 dev_desc->revision[4] = 0; 1376 #ifdef CONFIG_USB_BIN_FIXUP 1377 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1378 (uchar *)dev_desc->product); 1379 #endif /* CONFIG_USB_BIN_FIXUP */ 1380 USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1381 usb_stor_buf[3]); 1382 if (usb_test_unit_ready(pccb, ss)) { 1383 printf("Device NOT ready\n" 1384 " Request Sense returned %02X %02X %02X\n", 1385 pccb->sense_buf[2], pccb->sense_buf[12], 1386 pccb->sense_buf[13]); 1387 if (dev_desc->removable == 1) { 1388 dev_desc->type = perq; 1389 return 1; 1390 } 1391 return 0; 1392 } 1393 pccb->pdata = (unsigned char *)&cap[0]; 1394 memset(pccb->pdata, 0, 8); 1395 if (usb_read_capacity(pccb, ss) != 0) { 1396 printf("READ_CAP ERROR\n"); 1397 cap[0] = 2880; 1398 cap[1] = 0x200; 1399 } 1400 USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0], 1401 cap[1]); 1402 #if 0 1403 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1404 cap[0] >>= 16; 1405 #endif 1406 cap[0] = cpu_to_be32(cap[0]); 1407 cap[1] = cpu_to_be32(cap[1]); 1408 1409 /* this assumes bigendian! */ 1410 cap[0] += 1; 1411 capacity = &cap[0]; 1412 blksz = &cap[1]; 1413 USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n", 1414 *capacity, *blksz); 1415 dev_desc->lba = *capacity; 1416 dev_desc->blksz = *blksz; 1417 dev_desc->type = perq; 1418 USB_STOR_PRINTF(" address %d\n", dev_desc->target); 1419 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); 1420 1421 /* 1422 * The U-Boot EHCI driver cannot handle more than 4096 * 5 bytes in a 1423 * transfer without running itself out of qt_buffers. 1424 */ 1425 ss->max_xfer_blk = (4096 * 5) / dev_desc->blksz; 1426 1427 init_part(dev_desc); 1428 1429 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); 1430 return 1; 1431 } 1432