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 #ifdef CONFIG_PARTITIONS 177 block_dev_desc_t *usb_stor_get_dev(int index) 178 { 179 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL; 180 } 181 #endif 182 183 void usb_show_progress(void) 184 { 185 debug("."); 186 } 187 188 /******************************************************************************* 189 * show info on storage devices; 'usb start/init' must be invoked earlier 190 * as we only retrieve structures populated during devices initialization 191 */ 192 int usb_stor_info(void) 193 { 194 int i; 195 196 if (usb_max_devs > 0) { 197 for (i = 0; i < usb_max_devs; i++) { 198 printf(" Device %d: ", i); 199 dev_print(&usb_dev_desc[i]); 200 } 201 return 0; 202 } 203 204 printf("No storage devices, perhaps not 'usb start'ed..?\n"); 205 return 1; 206 } 207 208 static unsigned int usb_get_max_lun(struct us_data *us) 209 { 210 int len; 211 unsigned char result; 212 len = usb_control_msg(us->pusb_dev, 213 usb_rcvctrlpipe(us->pusb_dev, 0), 214 US_BBB_GET_MAX_LUN, 215 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 216 0, us->ifnum, 217 &result, sizeof(result), 218 USB_CNTL_TIMEOUT * 5); 219 USB_STOR_PRINTF("Get Max LUN -> len = %i, result = %i\n", 220 len, (int) result); 221 return (len > 0) ? result : 0; 222 } 223 224 /******************************************************************************* 225 * scan the usb and reports device info 226 * to the user if mode = 1 227 * returns current device or -1 if no 228 */ 229 int usb_stor_scan(int mode) 230 { 231 unsigned char i; 232 struct usb_device *dev; 233 234 /* GJ */ 235 memset(usb_stor_buf, 0, sizeof(usb_stor_buf)); 236 237 if (mode == 1) 238 printf(" scanning bus for storage devices... "); 239 240 usb_disable_asynch(1); /* asynch transfer not allowed */ 241 242 for (i = 0; i < USB_MAX_STOR_DEV; i++) { 243 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t)); 244 usb_dev_desc[i].if_type = IF_TYPE_USB; 245 usb_dev_desc[i].dev = i; 246 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN; 247 usb_dev_desc[i].target = 0xff; 248 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN; 249 usb_dev_desc[i].block_read = usb_stor_read; 250 usb_dev_desc[i].block_write = usb_stor_write; 251 } 252 253 usb_max_devs = 0; 254 for (i = 0; i < USB_MAX_DEVICE; i++) { 255 dev = usb_get_dev_index(i); /* get device */ 256 USB_STOR_PRINTF("i=%d\n", i); 257 if (dev == NULL) 258 break; /* no more devices available */ 259 260 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) { 261 /* OK, it's a storage device. Iterate over its LUNs 262 * and populate `usb_dev_desc'. 263 */ 264 int lun, max_lun, start = usb_max_devs; 265 266 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 267 for (lun = 0; 268 lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; 269 lun++) { 270 usb_dev_desc[usb_max_devs].lun = lun; 271 if (usb_stor_get_info(dev, &usb_stor[start], 272 &usb_dev_desc[usb_max_devs]) == 1) { 273 usb_max_devs++; 274 } 275 } 276 } 277 /* if storage device */ 278 if (usb_max_devs == USB_MAX_STOR_DEV) { 279 printf("max USB Storage Device reached: %d stopping\n", 280 usb_max_devs); 281 break; 282 } 283 } /* for */ 284 285 usb_disable_asynch(0); /* asynch transfer allowed */ 286 printf("%d Storage Device(s) found\n", usb_max_devs); 287 if (usb_max_devs > 0) 288 return 0; 289 return -1; 290 } 291 292 static int usb_stor_irq(struct usb_device *dev) 293 { 294 struct us_data *us; 295 us = (struct us_data *)dev->privptr; 296 297 if (us->ip_wanted) 298 us->ip_wanted = 0; 299 return 0; 300 } 301 302 303 #ifdef USB_STOR_DEBUG 304 305 static void usb_show_srb(ccb *pccb) 306 { 307 int i; 308 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 309 for (i = 0; i < 12; i++) 310 printf("%02X ", pccb->cmd[i]); 311 printf("\n"); 312 } 313 314 static void display_int_status(unsigned long tmp) 315 { 316 printf("Status: %s %s %s %s %s %s %s\n", 317 (tmp & USB_ST_ACTIVE) ? "Active" : "", 318 (tmp & USB_ST_STALLED) ? "Stalled" : "", 319 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 320 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 321 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 322 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 323 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 324 } 325 #endif 326 /*********************************************************************** 327 * Data transfer routines 328 ***********************************************************************/ 329 330 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 331 { 332 int max_size; 333 int this_xfer; 334 int result; 335 int partial; 336 int maxtry; 337 int stat; 338 339 /* determine the maximum packet size for these transfers */ 340 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 341 342 /* while we have data left to transfer */ 343 while (length) { 344 345 /* calculate how long this will be -- maximum or a remainder */ 346 this_xfer = length > max_size ? max_size : length; 347 length -= this_xfer; 348 349 /* setup the retry counter */ 350 maxtry = 10; 351 352 /* set up the transfer loop */ 353 do { 354 /* transfer the data */ 355 USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n", 356 (unsigned int)buf, this_xfer, 11 - maxtry); 357 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 358 this_xfer, &partial, 359 USB_CNTL_TIMEOUT * 5); 360 USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n", 361 result, partial, this_xfer); 362 if (us->pusb_dev->status != 0) { 363 /* if we stall, we need to clear it before 364 * we go on 365 */ 366 #ifdef USB_STOR_DEBUG 367 display_int_status(us->pusb_dev->status); 368 #endif 369 if (us->pusb_dev->status & USB_ST_STALLED) { 370 USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe); 371 stat = us->pusb_dev->status; 372 usb_clear_halt(us->pusb_dev, pipe); 373 us->pusb_dev->status = stat; 374 if (this_xfer == partial) { 375 USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n", us->pusb_dev->status); 376 return 0; 377 } 378 else 379 return result; 380 } 381 if (us->pusb_dev->status & USB_ST_NAK_REC) { 382 USB_STOR_PRINTF("Device NAKed bulk_msg\n"); 383 return result; 384 } 385 USB_STOR_PRINTF("bulk transferred with error"); 386 if (this_xfer == partial) { 387 USB_STOR_PRINTF(" %d, but data ok\n", 388 us->pusb_dev->status); 389 return 0; 390 } 391 /* if our try counter reaches 0, bail out */ 392 USB_STOR_PRINTF(" %d, data %d\n", 393 us->pusb_dev->status, partial); 394 if (!maxtry--) 395 return result; 396 } 397 /* update to show what data was transferred */ 398 this_xfer -= partial; 399 buf += partial; 400 /* continue until this transfer is done */ 401 } while (this_xfer); 402 } 403 404 /* if we get here, we're done and successful */ 405 return 0; 406 } 407 408 static int usb_stor_BBB_reset(struct us_data *us) 409 { 410 int result; 411 unsigned int pipe; 412 413 /* 414 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 415 * 416 * For Reset Recovery the host shall issue in the following order: 417 * a) a Bulk-Only Mass Storage Reset 418 * b) a Clear Feature HALT to the Bulk-In endpoint 419 * c) a Clear Feature HALT to the Bulk-Out endpoint 420 * 421 * This is done in 3 steps. 422 * 423 * If the reset doesn't succeed, the device should be port reset. 424 * 425 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 426 */ 427 USB_STOR_PRINTF("BBB_reset\n"); 428 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 429 US_BBB_RESET, 430 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 431 0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5); 432 433 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 434 USB_STOR_PRINTF("RESET:stall\n"); 435 return -1; 436 } 437 438 /* long wait for reset */ 439 wait_ms(150); 440 USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n", result, 441 us->pusb_dev->status); 442 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 443 result = usb_clear_halt(us->pusb_dev, pipe); 444 /* long wait for reset */ 445 wait_ms(150); 446 USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n", 447 result, us->pusb_dev->status); 448 /* long wait for reset */ 449 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 450 result = usb_clear_halt(us->pusb_dev, pipe); 451 wait_ms(150); 452 USB_STOR_PRINTF("BBB_reset result %d: status %X" 453 " clearing OUT endpoint\n", result, 454 us->pusb_dev->status); 455 USB_STOR_PRINTF("BBB_reset done\n"); 456 return 0; 457 } 458 459 /* FIXME: this reset function doesn't really reset the port, and it 460 * should. Actually it should probably do what it's doing here, and 461 * reset the port physically 462 */ 463 static int usb_stor_CB_reset(struct us_data *us) 464 { 465 unsigned char cmd[12]; 466 int result; 467 468 USB_STOR_PRINTF("CB_reset\n"); 469 memset(cmd, 0xff, sizeof(cmd)); 470 cmd[0] = SCSI_SEND_DIAG; 471 cmd[1] = 4; 472 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 473 US_CBI_ADSC, 474 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 475 0, us->ifnum, cmd, sizeof(cmd), 476 USB_CNTL_TIMEOUT * 5); 477 478 /* long wait for reset */ 479 wait_ms(1500); 480 USB_STOR_PRINTF("CB_reset result %d: status %X" 481 " clearing endpoint halt\n", result, 482 us->pusb_dev->status); 483 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in)); 484 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out)); 485 486 USB_STOR_PRINTF("CB_reset done\n"); 487 return 0; 488 } 489 490 /* 491 * Set up the command for a BBB device. Note that the actual SCSI 492 * command is copied into cbw.CBWCDB. 493 */ 494 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us) 495 { 496 int result; 497 int actlen; 498 int dir_in; 499 unsigned int pipe; 500 umass_bbb_cbw_t cbw; 501 502 dir_in = US_DIRECTION(srb->cmd[0]); 503 504 #ifdef BBB_COMDAT_TRACE 505 printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n", 506 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, 507 srb->pdata); 508 if (srb->cmdlen) { 509 for (result = 0; result < srb->cmdlen; result++) 510 printf("cmd[%d] %#x ", result, srb->cmd[result]); 511 printf("\n"); 512 } 513 #endif 514 /* sanity checks */ 515 if (!(srb->cmdlen <= CBWCDBLENGTH)) { 516 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n"); 517 return -1; 518 } 519 520 /* always OUT to the ep */ 521 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 522 523 cbw.dCBWSignature = cpu_to_le32(CBWSIGNATURE); 524 cbw.dCBWTag = cpu_to_le32(CBWTag++); 525 cbw.dCBWDataTransferLength = cpu_to_le32(srb->datalen); 526 cbw.bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT); 527 cbw.bCBWLUN = srb->lun; 528 cbw.bCDBLength = srb->cmdlen; 529 /* copy the command data into the CBW command data buffer */ 530 /* DST SRC LEN!!! */ 531 memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen); 532 result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE, 533 &actlen, USB_CNTL_TIMEOUT * 5); 534 if (result < 0) 535 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 536 return result; 537 } 538 539 /* FIXME: we also need a CBI_command which sets up the completion 540 * interrupt, and waits for it 541 */ 542 int usb_stor_CB_comdat(ccb *srb, struct us_data *us) 543 { 544 int result = 0; 545 int dir_in, retry; 546 unsigned int pipe; 547 unsigned long status; 548 549 retry = 5; 550 dir_in = US_DIRECTION(srb->cmd[0]); 551 552 if (dir_in) 553 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 554 else 555 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 556 557 while (retry--) { 558 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry); 559 #ifdef USB_STOR_DEBUG 560 usb_show_srb(srb); 561 #endif 562 /* let's send the command via the control pipe */ 563 result = usb_control_msg(us->pusb_dev, 564 usb_sndctrlpipe(us->pusb_dev , 0), 565 US_CBI_ADSC, 566 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 567 0, us->ifnum, 568 srb->cmd, srb->cmdlen, 569 USB_CNTL_TIMEOUT * 5); 570 USB_STOR_PRINTF("CB_transport: control msg returned %d," 571 " status %X\n", result, us->pusb_dev->status); 572 /* check the return code for the command */ 573 if (result < 0) { 574 if (us->pusb_dev->status & USB_ST_STALLED) { 575 status = us->pusb_dev->status; 576 USB_STOR_PRINTF(" stall during command found," 577 " clear pipe\n"); 578 usb_clear_halt(us->pusb_dev, 579 usb_sndctrlpipe(us->pusb_dev, 0)); 580 us->pusb_dev->status = status; 581 } 582 USB_STOR_PRINTF(" error during command %02X" 583 " Stat = %X\n", srb->cmd[0], 584 us->pusb_dev->status); 585 return result; 586 } 587 /* transfer the data payload for this command, if one exists*/ 588 589 USB_STOR_PRINTF("CB_transport: control msg returned %d," 590 " direction is %s to go 0x%lx\n", result, 591 dir_in ? "IN" : "OUT", srb->datalen); 592 if (srb->datalen) { 593 result = us_one_transfer(us, pipe, (char *)srb->pdata, 594 srb->datalen); 595 USB_STOR_PRINTF("CBI attempted to transfer data," 596 " result is %d status %lX, len %d\n", 597 result, us->pusb_dev->status, 598 us->pusb_dev->act_len); 599 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 600 break; 601 } /* if (srb->datalen) */ 602 else 603 break; 604 } 605 /* return result */ 606 607 return result; 608 } 609 610 611 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us) 612 { 613 int timeout; 614 615 us->ip_wanted = 1; 616 submit_int_msg(us->pusb_dev, us->irqpipe, 617 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 618 timeout = 1000; 619 while (timeout--) { 620 if ((volatile int *) us->ip_wanted == 0) 621 break; 622 wait_ms(10); 623 } 624 if (us->ip_wanted) { 625 printf(" Did not get interrupt on CBI\n"); 626 us->ip_wanted = 0; 627 return USB_STOR_TRANSPORT_ERROR; 628 } 629 USB_STOR_PRINTF 630 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n", 631 us->ip_data, us->pusb_dev->irq_act_len, 632 us->pusb_dev->irq_status); 633 /* UFI gives us ASC and ASCQ, like a request sense */ 634 if (us->subclass == US_SC_UFI) { 635 if (srb->cmd[0] == SCSI_REQ_SENSE || 636 srb->cmd[0] == SCSI_INQUIRY) 637 return USB_STOR_TRANSPORT_GOOD; /* Good */ 638 else if (us->ip_data) 639 return USB_STOR_TRANSPORT_FAILED; 640 else 641 return USB_STOR_TRANSPORT_GOOD; 642 } 643 /* otherwise, we interpret the data normally */ 644 switch (us->ip_data) { 645 case 0x0001: 646 return USB_STOR_TRANSPORT_GOOD; 647 case 0x0002: 648 return USB_STOR_TRANSPORT_FAILED; 649 default: 650 return USB_STOR_TRANSPORT_ERROR; 651 } /* switch */ 652 return USB_STOR_TRANSPORT_ERROR; 653 } 654 655 #define USB_TRANSPORT_UNKNOWN_RETRY 5 656 #define USB_TRANSPORT_NOT_READY_RETRY 10 657 658 /* clear a stall on an endpoint - special for BBB devices */ 659 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 660 { 661 int result; 662 663 /* ENDPOINT_HALT = 0, so set value to 0 */ 664 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 665 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 666 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5); 667 return result; 668 } 669 670 int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 671 { 672 int result, retry; 673 int dir_in; 674 int actlen, data_actlen; 675 unsigned int pipe, pipein, pipeout; 676 umass_bbb_csw_t csw; 677 #ifdef BBB_XPORT_TRACE 678 unsigned char *ptr; 679 int index; 680 #endif 681 682 dir_in = US_DIRECTION(srb->cmd[0]); 683 684 /* COMMAND phase */ 685 USB_STOR_PRINTF("COMMAND phase\n"); 686 result = usb_stor_BBB_comdat(srb, us); 687 if (result < 0) { 688 USB_STOR_PRINTF("failed to send CBW status %ld\n", 689 us->pusb_dev->status); 690 usb_stor_BBB_reset(us); 691 return USB_STOR_TRANSPORT_FAILED; 692 } 693 wait_ms(5); 694 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 695 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 696 /* DATA phase + error handling */ 697 data_actlen = 0; 698 /* no data, go immediately to the STATUS phase */ 699 if (srb->datalen == 0) 700 goto st; 701 USB_STOR_PRINTF("DATA phase\n"); 702 if (dir_in) 703 pipe = pipein; 704 else 705 pipe = pipeout; 706 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 707 &data_actlen, USB_CNTL_TIMEOUT * 5); 708 /* special handling of STALL in DATA phase */ 709 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 710 USB_STOR_PRINTF("DATA:stall\n"); 711 /* clear the STALL on the endpoint */ 712 result = usb_stor_BBB_clear_endpt_stall(us, 713 dir_in ? us->ep_in : us->ep_out); 714 if (result >= 0) 715 /* continue on to STATUS phase */ 716 goto st; 717 } 718 if (result < 0) { 719 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n", 720 us->pusb_dev->status); 721 usb_stor_BBB_reset(us); 722 return USB_STOR_TRANSPORT_FAILED; 723 } 724 #ifdef BBB_XPORT_TRACE 725 for (index = 0; index < data_actlen; index++) 726 printf("pdata[%d] %#x ", index, srb->pdata[index]); 727 printf("\n"); 728 #endif 729 /* STATUS phase + error handling */ 730 st: 731 retry = 0; 732 again: 733 USB_STOR_PRINTF("STATUS phase\n"); 734 result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE, 735 &actlen, USB_CNTL_TIMEOUT*5); 736 737 /* special handling of STALL in STATUS phase */ 738 if ((result < 0) && (retry < 1) && 739 (us->pusb_dev->status & USB_ST_STALLED)) { 740 USB_STOR_PRINTF("STATUS:stall\n"); 741 /* clear the STALL on the endpoint */ 742 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 743 if (result >= 0 && (retry++ < 1)) 744 /* do a retry */ 745 goto again; 746 } 747 if (result < 0) { 748 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n", 749 us->pusb_dev->status); 750 usb_stor_BBB_reset(us); 751 return USB_STOR_TRANSPORT_FAILED; 752 } 753 #ifdef BBB_XPORT_TRACE 754 ptr = (unsigned char *)&csw; 755 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 756 printf("ptr[%d] %#x ", index, ptr[index]); 757 printf("\n"); 758 #endif 759 /* misuse pipe to get the residue */ 760 pipe = le32_to_cpu(csw.dCSWDataResidue); 761 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 762 pipe = srb->datalen - data_actlen; 763 if (CSWSIGNATURE != le32_to_cpu(csw.dCSWSignature)) { 764 USB_STOR_PRINTF("!CSWSIGNATURE\n"); 765 usb_stor_BBB_reset(us); 766 return USB_STOR_TRANSPORT_FAILED; 767 } else if ((CBWTag - 1) != le32_to_cpu(csw.dCSWTag)) { 768 USB_STOR_PRINTF("!Tag\n"); 769 usb_stor_BBB_reset(us); 770 return USB_STOR_TRANSPORT_FAILED; 771 } else if (csw.bCSWStatus > CSWSTATUS_PHASE) { 772 USB_STOR_PRINTF(">PHASE\n"); 773 usb_stor_BBB_reset(us); 774 return USB_STOR_TRANSPORT_FAILED; 775 } else if (csw.bCSWStatus == CSWSTATUS_PHASE) { 776 USB_STOR_PRINTF("=PHASE\n"); 777 usb_stor_BBB_reset(us); 778 return USB_STOR_TRANSPORT_FAILED; 779 } else if (data_actlen > srb->datalen) { 780 USB_STOR_PRINTF("transferred %dB instead of %dB\n", 781 data_actlen, srb->datalen); 782 return USB_STOR_TRANSPORT_FAILED; 783 } else if (csw.bCSWStatus == CSWSTATUS_FAILED) { 784 USB_STOR_PRINTF("FAILED\n"); 785 return USB_STOR_TRANSPORT_FAILED; 786 } 787 788 return result; 789 } 790 791 int usb_stor_CB_transport(ccb *srb, struct us_data *us) 792 { 793 int result, status; 794 ccb *psrb; 795 ccb reqsrb; 796 int retry, notready; 797 798 psrb = &reqsrb; 799 status = USB_STOR_TRANSPORT_GOOD; 800 retry = 0; 801 notready = 0; 802 /* issue the command */ 803 do_retry: 804 result = usb_stor_CB_comdat(srb, us); 805 USB_STOR_PRINTF("command / Data returned %d, status %X\n", 806 result, us->pusb_dev->status); 807 /* if this is an CBI Protocol, get IRQ */ 808 if (us->protocol == US_PR_CBI) { 809 status = usb_stor_CBI_get_status(srb, us); 810 /* if the status is error, report it */ 811 if (status == USB_STOR_TRANSPORT_ERROR) { 812 USB_STOR_PRINTF(" USB CBI Command Error\n"); 813 return status; 814 } 815 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 816 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 817 if (!us->ip_data) { 818 /* if the status is good, report it */ 819 if (status == USB_STOR_TRANSPORT_GOOD) { 820 USB_STOR_PRINTF(" USB CBI Command Good\n"); 821 return status; 822 } 823 } 824 } 825 /* do we have to issue an auto request? */ 826 /* HERE we have to check the result */ 827 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 828 USB_STOR_PRINTF("ERROR %X\n", us->pusb_dev->status); 829 us->transport_reset(us); 830 return USB_STOR_TRANSPORT_ERROR; 831 } 832 if ((us->protocol == US_PR_CBI) && 833 ((srb->cmd[0] == SCSI_REQ_SENSE) || 834 (srb->cmd[0] == SCSI_INQUIRY))) { 835 /* do not issue an autorequest after request sense */ 836 USB_STOR_PRINTF("No auto request and good\n"); 837 return USB_STOR_TRANSPORT_GOOD; 838 } 839 /* issue an request_sense */ 840 memset(&psrb->cmd[0], 0, 12); 841 psrb->cmd[0] = SCSI_REQ_SENSE; 842 psrb->cmd[1] = srb->lun << 5; 843 psrb->cmd[4] = 18; 844 psrb->datalen = 18; 845 psrb->pdata = &srb->sense_buf[0]; 846 psrb->cmdlen = 12; 847 /* issue the command */ 848 result = usb_stor_CB_comdat(psrb, us); 849 USB_STOR_PRINTF("auto request returned %d\n", result); 850 /* if this is an CBI Protocol, get IRQ */ 851 if (us->protocol == US_PR_CBI) 852 status = usb_stor_CBI_get_status(psrb, us); 853 854 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 855 USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n", 856 us->pusb_dev->status); 857 return USB_STOR_TRANSPORT_ERROR; 858 } 859 USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 860 srb->sense_buf[0], srb->sense_buf[2], 861 srb->sense_buf[12], srb->sense_buf[13]); 862 /* Check the auto request result */ 863 if ((srb->sense_buf[2] == 0) && 864 (srb->sense_buf[12] == 0) && 865 (srb->sense_buf[13] == 0)) { 866 /* ok, no sense */ 867 return USB_STOR_TRANSPORT_GOOD; 868 } 869 870 /* Check the auto request result */ 871 switch (srb->sense_buf[2]) { 872 case 0x01: 873 /* Recovered Error */ 874 return USB_STOR_TRANSPORT_GOOD; 875 break; 876 case 0x02: 877 /* Not Ready */ 878 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 879 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 880 " 0x%02X (NOT READY)\n", srb->cmd[0], 881 srb->sense_buf[0], srb->sense_buf[2], 882 srb->sense_buf[12], srb->sense_buf[13]); 883 return USB_STOR_TRANSPORT_FAILED; 884 } else { 885 wait_ms(100); 886 goto do_retry; 887 } 888 break; 889 default: 890 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 891 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 892 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 893 srb->sense_buf[2], srb->sense_buf[12], 894 srb->sense_buf[13]); 895 return USB_STOR_TRANSPORT_FAILED; 896 } else 897 goto do_retry; 898 break; 899 } 900 return USB_STOR_TRANSPORT_FAILED; 901 } 902 903 904 static int usb_inquiry(ccb *srb, struct us_data *ss) 905 { 906 int retry, i; 907 retry = 5; 908 do { 909 memset(&srb->cmd[0], 0, 12); 910 srb->cmd[0] = SCSI_INQUIRY; 911 srb->cmd[1] = srb->lun << 5; 912 srb->cmd[4] = 36; 913 srb->datalen = 36; 914 srb->cmdlen = 12; 915 i = ss->transport(srb, ss); 916 USB_STOR_PRINTF("inquiry returns %d\n", i); 917 if (i == 0) 918 break; 919 } while (--retry); 920 921 if (!retry) { 922 printf("error in inquiry\n"); 923 return -1; 924 } 925 return 0; 926 } 927 928 static int usb_request_sense(ccb *srb, struct us_data *ss) 929 { 930 char *ptr; 931 932 ptr = (char *)srb->pdata; 933 memset(&srb->cmd[0], 0, 12); 934 srb->cmd[0] = SCSI_REQ_SENSE; 935 srb->cmd[1] = srb->lun << 5; 936 srb->cmd[4] = 18; 937 srb->datalen = 18; 938 srb->pdata = &srb->sense_buf[0]; 939 srb->cmdlen = 12; 940 ss->transport(srb, ss); 941 USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n", 942 srb->sense_buf[2], srb->sense_buf[12], 943 srb->sense_buf[13]); 944 srb->pdata = (uchar *)ptr; 945 return 0; 946 } 947 948 static int usb_test_unit_ready(ccb *srb, struct us_data *ss) 949 { 950 int retries = 10; 951 952 do { 953 memset(&srb->cmd[0], 0, 12); 954 srb->cmd[0] = SCSI_TST_U_RDY; 955 srb->cmd[1] = srb->lun << 5; 956 srb->datalen = 0; 957 srb->cmdlen = 12; 958 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 959 return 0; 960 usb_request_sense(srb, ss); 961 wait_ms(100); 962 } while (retries--); 963 964 return -1; 965 } 966 967 static int usb_read_capacity(ccb *srb, struct us_data *ss) 968 { 969 int retry; 970 /* XXX retries */ 971 retry = 3; 972 do { 973 memset(&srb->cmd[0], 0, 12); 974 srb->cmd[0] = SCSI_RD_CAPAC; 975 srb->cmd[1] = srb->lun << 5; 976 srb->datalen = 8; 977 srb->cmdlen = 12; 978 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 979 return 0; 980 } while (retry--); 981 982 return -1; 983 } 984 985 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 986 unsigned short blocks) 987 { 988 memset(&srb->cmd[0], 0, 12); 989 srb->cmd[0] = SCSI_READ10; 990 srb->cmd[1] = srb->lun << 5; 991 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 992 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 993 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 994 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 995 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 996 srb->cmd[8] = (unsigned char) blocks & 0xff; 997 srb->cmdlen = 12; 998 USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks); 999 return ss->transport(srb, ss); 1000 } 1001 1002 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 1003 unsigned short blocks) 1004 { 1005 memset(&srb->cmd[0], 0, 12); 1006 srb->cmd[0] = SCSI_WRITE10; 1007 srb->cmd[1] = srb->lun << 5; 1008 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1009 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1010 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1011 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1012 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1013 srb->cmd[8] = (unsigned char) blocks & 0xff; 1014 srb->cmdlen = 12; 1015 USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks); 1016 return ss->transport(srb, ss); 1017 } 1018 1019 1020 #ifdef CONFIG_USB_BIN_FIXUP 1021 /* 1022 * Some USB storage devices queried for SCSI identification data respond with 1023 * binary strings, which if output to the console freeze the terminal. The 1024 * workaround is to modify the vendor and product strings read from such 1025 * device with proper values (as reported by 'usb info'). 1026 * 1027 * Vendor and product length limits are taken from the definition of 1028 * block_dev_desc_t in include/part.h. 1029 */ 1030 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1031 unsigned char vendor[], 1032 unsigned char product[]) { 1033 const unsigned char max_vendor_len = 40; 1034 const unsigned char max_product_len = 20; 1035 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1036 strncpy((char *)vendor, "SMSC", max_vendor_len); 1037 strncpy((char *)product, "Flash Media Cntrller", 1038 max_product_len); 1039 } 1040 } 1041 #endif /* CONFIG_USB_BIN_FIXUP */ 1042 1043 #define USB_MAX_READ_BLK 20 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 int retry, i; 1052 ccb *srb = &usb_ccb; 1053 1054 if (blkcnt == 0) 1055 return 0; 1056 1057 device &= 0xff; 1058 /* Setup device */ 1059 USB_STOR_PRINTF("\nusb_read: dev %d \n", device); 1060 dev = NULL; 1061 for (i = 0; i < USB_MAX_DEVICE; i++) { 1062 dev = usb_get_dev_index(i); 1063 if (dev == NULL) 1064 return 0; 1065 if (dev->devnum == usb_dev_desc[device].target) 1066 break; 1067 } 1068 1069 usb_disable_asynch(1); /* asynch transfer not allowed */ 1070 srb->lun = usb_dev_desc[device].lun; 1071 buf_addr = (unsigned long)buffer; 1072 start = blknr; 1073 blks = blkcnt; 1074 if (usb_test_unit_ready(srb, (struct us_data *)dev->privptr)) { 1075 printf("Device NOT ready\n Request Sense returned %02X %02X" 1076 " %02X\n", srb->sense_buf[2], srb->sense_buf[12], 1077 srb->sense_buf[13]); 1078 return 0; 1079 } 1080 1081 USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx" 1082 " buffer %lx\n", device, start, blks, buf_addr); 1083 1084 do { 1085 /* XXX need some comment here */ 1086 retry = 2; 1087 srb->pdata = (unsigned char *)buf_addr; 1088 if (blks > USB_MAX_READ_BLK) 1089 smallblks = USB_MAX_READ_BLK; 1090 else 1091 smallblks = (unsigned short) blks; 1092 retry_it: 1093 if (smallblks == USB_MAX_READ_BLK) 1094 usb_show_progress(); 1095 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1096 srb->pdata = (unsigned char *)buf_addr; 1097 if (usb_read_10(srb, (struct us_data *)dev->privptr, start, 1098 smallblks)) { 1099 USB_STOR_PRINTF("Read ERROR\n"); 1100 usb_request_sense(srb, (struct us_data *)dev->privptr); 1101 if (retry--) 1102 goto retry_it; 1103 blkcnt -= blks; 1104 break; 1105 } 1106 start += smallblks; 1107 blks -= smallblks; 1108 buf_addr += srb->datalen; 1109 } while (blks != 0); 1110 1111 USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n", 1112 start, smallblks, buf_addr); 1113 1114 usb_disable_asynch(0); /* asynch transfer allowed */ 1115 if (blkcnt >= USB_MAX_READ_BLK) 1116 debug("\n"); 1117 return blkcnt; 1118 } 1119 1120 #define USB_MAX_WRITE_BLK 20 1121 1122 unsigned long usb_stor_write(int device, unsigned long blknr, 1123 unsigned long blkcnt, const void *buffer) 1124 { 1125 unsigned long start, blks, buf_addr; 1126 unsigned short smallblks; 1127 struct usb_device *dev; 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 1146 usb_disable_asynch(1); /* asynch transfer not allowed */ 1147 1148 srb->lun = usb_dev_desc[device].lun; 1149 buf_addr = (unsigned long)buffer; 1150 start = blknr; 1151 blks = blkcnt; 1152 if (usb_test_unit_ready(srb, (struct us_data *)dev->privptr)) { 1153 printf("Device NOT ready\n Request Sense returned %02X %02X" 1154 " %02X\n", srb->sense_buf[2], srb->sense_buf[12], 1155 srb->sense_buf[13]); 1156 return 0; 1157 } 1158 1159 USB_STOR_PRINTF("\nusb_write: dev %d startblk %lx, blccnt %lx" 1160 " buffer %lx\n", device, start, blks, buf_addr); 1161 1162 do { 1163 /* If write fails retry for max retry count else 1164 * return with number of blocks written successfully. 1165 */ 1166 retry = 2; 1167 srb->pdata = (unsigned char *)buf_addr; 1168 if (blks > USB_MAX_WRITE_BLK) 1169 smallblks = USB_MAX_WRITE_BLK; 1170 else 1171 smallblks = (unsigned short) blks; 1172 retry_it: 1173 if (smallblks == USB_MAX_WRITE_BLK) 1174 usb_show_progress(); 1175 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1176 srb->pdata = (unsigned char *)buf_addr; 1177 if (usb_write_10(srb, (struct us_data *)dev->privptr, start, 1178 smallblks)) { 1179 USB_STOR_PRINTF("Write ERROR\n"); 1180 usb_request_sense(srb, (struct us_data *)dev->privptr); 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 >= USB_MAX_WRITE_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 init_part(dev_desc); 1422 1423 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); 1424 return 1; 1425 } 1426