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