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