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 # define USB_READY (1 << 0) 140 unsigned char ifnum; /* interface number */ 141 unsigned char ep_in; /* in endpoint */ 142 unsigned char ep_out; /* out ....... */ 143 unsigned char ep_int; /* interrupt . */ 144 unsigned char subclass; /* as in overview */ 145 unsigned char protocol; /* .............. */ 146 unsigned char attention_done; /* force attn on first cmd */ 147 unsigned short ip_data; /* interrupt data */ 148 int action; /* what to do */ 149 int ip_wanted; /* needed */ 150 int *irq_handle; /* for USB int requests */ 151 unsigned int irqpipe; /* pipe for release_irq */ 152 unsigned char irqmaxp; /* max packed for irq Pipe */ 153 unsigned char irqinterval; /* Intervall for IRQ Pipe */ 154 ccb *srb; /* current srb */ 155 trans_reset transport_reset; /* reset routine */ 156 trans_cmnd transport; /* transport routine */ 157 }; 158 159 #ifdef CONFIG_USB_EHCI 160 /* 161 * The U-Boot EHCI driver can handle any transfer length as long as there is 162 * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are 163 * limited to 65535 blocks. 164 */ 165 #define USB_MAX_XFER_BLK 65535 166 #else 167 #define USB_MAX_XFER_BLK 20 168 #endif 169 170 static struct us_data usb_stor[USB_MAX_STOR_DEV]; 171 172 173 #define USB_STOR_TRANSPORT_GOOD 0 174 #define USB_STOR_TRANSPORT_FAILED -1 175 #define USB_STOR_TRANSPORT_ERROR -2 176 177 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, 178 block_dev_desc_t *dev_desc); 179 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 180 struct us_data *ss); 181 unsigned long usb_stor_read(int device, unsigned long blknr, 182 lbaint_t blkcnt, void *buffer); 183 unsigned long usb_stor_write(int device, unsigned long blknr, 184 lbaint_t blkcnt, const void *buffer); 185 struct usb_device * usb_get_dev_index(int index); 186 void uhci_show_temp_int_td(void); 187 188 #ifdef CONFIG_PARTITIONS 189 block_dev_desc_t *usb_stor_get_dev(int index) 190 { 191 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL; 192 } 193 #endif 194 195 static void usb_show_progress(void) 196 { 197 debug("."); 198 } 199 200 /******************************************************************************* 201 * show info on storage devices; 'usb start/init' must be invoked earlier 202 * as we only retrieve structures populated during devices initialization 203 */ 204 int usb_stor_info(void) 205 { 206 int i; 207 208 if (usb_max_devs > 0) { 209 for (i = 0; i < usb_max_devs; i++) { 210 printf(" Device %d: ", i); 211 dev_print(&usb_dev_desc[i]); 212 } 213 return 0; 214 } 215 216 printf("No storage devices, perhaps not 'usb start'ed..?\n"); 217 return 1; 218 } 219 220 static unsigned int usb_get_max_lun(struct us_data *us) 221 { 222 int len; 223 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1); 224 len = usb_control_msg(us->pusb_dev, 225 usb_rcvctrlpipe(us->pusb_dev, 0), 226 US_BBB_GET_MAX_LUN, 227 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 228 0, us->ifnum, 229 result, sizeof(char), 230 USB_CNTL_TIMEOUT * 5); 231 USB_STOR_PRINTF("Get Max LUN -> len = %i, result = %i\n", 232 len, (int) *result); 233 return (len > 0) ? *result : 0; 234 } 235 236 /******************************************************************************* 237 * scan the usb and reports device info 238 * to the user if mode = 1 239 * returns current device or -1 if no 240 */ 241 int usb_stor_scan(int mode) 242 { 243 unsigned char i; 244 struct usb_device *dev; 245 246 if (mode == 1) 247 printf(" scanning usb for storage devices... "); 248 249 usb_disable_asynch(1); /* asynch transfer not allowed */ 250 251 for (i = 0; i < USB_MAX_STOR_DEV; i++) { 252 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t)); 253 usb_dev_desc[i].if_type = IF_TYPE_USB; 254 usb_dev_desc[i].dev = i; 255 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN; 256 usb_dev_desc[i].target = 0xff; 257 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN; 258 usb_dev_desc[i].block_read = usb_stor_read; 259 usb_dev_desc[i].block_write = usb_stor_write; 260 } 261 262 usb_max_devs = 0; 263 for (i = 0; i < USB_MAX_DEVICE; i++) { 264 dev = usb_get_dev_index(i); /* get device */ 265 USB_STOR_PRINTF("i=%d\n", i); 266 if (dev == NULL) 267 break; /* no more devices available */ 268 269 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) { 270 /* OK, it's a storage device. Iterate over its LUNs 271 * and populate `usb_dev_desc'. 272 */ 273 int lun, max_lun, start = usb_max_devs; 274 275 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 276 for (lun = 0; 277 lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; 278 lun++) { 279 usb_dev_desc[usb_max_devs].lun = lun; 280 if (usb_stor_get_info(dev, &usb_stor[start], 281 &usb_dev_desc[usb_max_devs]) == 1) { 282 usb_max_devs++; 283 } 284 } 285 } 286 /* if storage device */ 287 if (usb_max_devs == USB_MAX_STOR_DEV) { 288 printf("max USB Storage Device reached: %d stopping\n", 289 usb_max_devs); 290 break; 291 } 292 } /* for */ 293 294 usb_disable_asynch(0); /* asynch transfer allowed */ 295 printf("%d Storage Device(s) found\n", usb_max_devs); 296 if (usb_max_devs > 0) 297 return 0; 298 return -1; 299 } 300 301 static int usb_stor_irq(struct usb_device *dev) 302 { 303 struct us_data *us; 304 us = (struct us_data *)dev->privptr; 305 306 if (us->ip_wanted) 307 us->ip_wanted = 0; 308 return 0; 309 } 310 311 312 #ifdef USB_STOR_DEBUG 313 314 static void usb_show_srb(ccb *pccb) 315 { 316 int i; 317 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 318 for (i = 0; i < 12; i++) 319 printf("%02X ", pccb->cmd[i]); 320 printf("\n"); 321 } 322 323 static void display_int_status(unsigned long tmp) 324 { 325 printf("Status: %s %s %s %s %s %s %s\n", 326 (tmp & USB_ST_ACTIVE) ? "Active" : "", 327 (tmp & USB_ST_STALLED) ? "Stalled" : "", 328 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 329 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 330 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 331 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 332 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 333 } 334 #endif 335 /*********************************************************************** 336 * Data transfer routines 337 ***********************************************************************/ 338 339 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 340 { 341 int max_size; 342 int this_xfer; 343 int result; 344 int partial; 345 int maxtry; 346 int stat; 347 348 /* determine the maximum packet size for these transfers */ 349 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 350 351 /* while we have data left to transfer */ 352 while (length) { 353 354 /* calculate how long this will be -- maximum or a remainder */ 355 this_xfer = length > max_size ? max_size : length; 356 length -= this_xfer; 357 358 /* setup the retry counter */ 359 maxtry = 10; 360 361 /* set up the transfer loop */ 362 do { 363 /* transfer the data */ 364 USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n", 365 (unsigned int)buf, this_xfer, 11 - maxtry); 366 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 367 this_xfer, &partial, 368 USB_CNTL_TIMEOUT * 5); 369 USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n", 370 result, partial, this_xfer); 371 if (us->pusb_dev->status != 0) { 372 /* if we stall, we need to clear it before 373 * we go on 374 */ 375 #ifdef USB_STOR_DEBUG 376 display_int_status(us->pusb_dev->status); 377 #endif 378 if (us->pusb_dev->status & USB_ST_STALLED) { 379 USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe); 380 stat = us->pusb_dev->status; 381 usb_clear_halt(us->pusb_dev, pipe); 382 us->pusb_dev->status = stat; 383 if (this_xfer == partial) { 384 USB_STOR_PRINTF("bulk transferred with error %lX, but data ok\n", us->pusb_dev->status); 385 return 0; 386 } 387 else 388 return result; 389 } 390 if (us->pusb_dev->status & USB_ST_NAK_REC) { 391 USB_STOR_PRINTF("Device NAKed bulk_msg\n"); 392 return result; 393 } 394 USB_STOR_PRINTF("bulk transferred with error"); 395 if (this_xfer == partial) { 396 USB_STOR_PRINTF(" %ld, but data ok\n", 397 us->pusb_dev->status); 398 return 0; 399 } 400 /* if our try counter reaches 0, bail out */ 401 USB_STOR_PRINTF(" %ld, data %d\n", 402 us->pusb_dev->status, partial); 403 if (!maxtry--) 404 return result; 405 } 406 /* update to show what data was transferred */ 407 this_xfer -= partial; 408 buf += partial; 409 /* continue until this transfer is done */ 410 } while (this_xfer); 411 } 412 413 /* if we get here, we're done and successful */ 414 return 0; 415 } 416 417 static int usb_stor_BBB_reset(struct us_data *us) 418 { 419 int result; 420 unsigned int pipe; 421 422 /* 423 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 424 * 425 * For Reset Recovery the host shall issue in the following order: 426 * a) a Bulk-Only Mass Storage Reset 427 * b) a Clear Feature HALT to the Bulk-In endpoint 428 * c) a Clear Feature HALT to the Bulk-Out endpoint 429 * 430 * This is done in 3 steps. 431 * 432 * If the reset doesn't succeed, the device should be port reset. 433 * 434 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 435 */ 436 USB_STOR_PRINTF("BBB_reset\n"); 437 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 438 US_BBB_RESET, 439 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 440 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5); 441 442 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 443 USB_STOR_PRINTF("RESET:stall\n"); 444 return -1; 445 } 446 447 /* long wait for reset */ 448 mdelay(150); 449 USB_STOR_PRINTF("BBB_reset result %d: status %lX reset\n", result, 450 us->pusb_dev->status); 451 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 452 result = usb_clear_halt(us->pusb_dev, pipe); 453 /* long wait for reset */ 454 mdelay(150); 455 USB_STOR_PRINTF("BBB_reset result %d: status %lX clearing IN endpoint\n", 456 result, us->pusb_dev->status); 457 /* long wait for reset */ 458 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 459 result = usb_clear_halt(us->pusb_dev, pipe); 460 mdelay(150); 461 USB_STOR_PRINTF("BBB_reset result %d: status %lX" 462 " clearing OUT endpoint\n", result, 463 us->pusb_dev->status); 464 USB_STOR_PRINTF("BBB_reset done\n"); 465 return 0; 466 } 467 468 /* FIXME: this reset function doesn't really reset the port, and it 469 * should. Actually it should probably do what it's doing here, and 470 * reset the port physically 471 */ 472 static int usb_stor_CB_reset(struct us_data *us) 473 { 474 unsigned char cmd[12]; 475 int result; 476 477 USB_STOR_PRINTF("CB_reset\n"); 478 memset(cmd, 0xff, sizeof(cmd)); 479 cmd[0] = SCSI_SEND_DIAG; 480 cmd[1] = 4; 481 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 482 US_CBI_ADSC, 483 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 484 0, us->ifnum, cmd, sizeof(cmd), 485 USB_CNTL_TIMEOUT * 5); 486 487 /* long wait for reset */ 488 mdelay(1500); 489 USB_STOR_PRINTF("CB_reset result %d: status %lX" 490 " clearing endpoint halt\n", result, 491 us->pusb_dev->status); 492 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in)); 493 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out)); 494 495 USB_STOR_PRINTF("CB_reset done\n"); 496 return 0; 497 } 498 499 /* 500 * Set up the command for a BBB device. Note that the actual SCSI 501 * command is copied into cbw.CBWCDB. 502 */ 503 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us) 504 { 505 int result; 506 int actlen; 507 int dir_in; 508 unsigned int pipe; 509 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_cbw_t, cbw, 1); 510 511 dir_in = US_DIRECTION(srb->cmd[0]); 512 513 #ifdef BBB_COMDAT_TRACE 514 printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n", 515 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, 516 srb->pdata); 517 if (srb->cmdlen) { 518 for (result = 0; result < srb->cmdlen; result++) 519 printf("cmd[%d] %#x ", result, srb->cmd[result]); 520 printf("\n"); 521 } 522 #endif 523 /* sanity checks */ 524 if (!(srb->cmdlen <= CBWCDBLENGTH)) { 525 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n"); 526 return -1; 527 } 528 529 /* always OUT to the ep */ 530 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 531 532 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE); 533 cbw->dCBWTag = cpu_to_le32(CBWTag++); 534 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen); 535 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT); 536 cbw->bCBWLUN = srb->lun; 537 cbw->bCDBLength = srb->cmdlen; 538 /* copy the command data into the CBW command data buffer */ 539 /* DST SRC LEN!!! */ 540 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen); 541 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE, 542 &actlen, USB_CNTL_TIMEOUT * 5); 543 if (result < 0) 544 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 545 return result; 546 } 547 548 /* FIXME: we also need a CBI_command which sets up the completion 549 * interrupt, and waits for it 550 */ 551 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us) 552 { 553 int result = 0; 554 int dir_in, retry; 555 unsigned int pipe; 556 unsigned long status; 557 558 retry = 5; 559 dir_in = US_DIRECTION(srb->cmd[0]); 560 561 if (dir_in) 562 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 563 else 564 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 565 566 while (retry--) { 567 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry); 568 #ifdef USB_STOR_DEBUG 569 usb_show_srb(srb); 570 #endif 571 /* let's send the command via the control pipe */ 572 result = usb_control_msg(us->pusb_dev, 573 usb_sndctrlpipe(us->pusb_dev , 0), 574 US_CBI_ADSC, 575 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 576 0, us->ifnum, 577 srb->cmd, srb->cmdlen, 578 USB_CNTL_TIMEOUT * 5); 579 USB_STOR_PRINTF("CB_transport: control msg returned %d," 580 " status %lX\n", result, us->pusb_dev->status); 581 /* check the return code for the command */ 582 if (result < 0) { 583 if (us->pusb_dev->status & USB_ST_STALLED) { 584 status = us->pusb_dev->status; 585 USB_STOR_PRINTF(" stall during command found," 586 " clear pipe\n"); 587 usb_clear_halt(us->pusb_dev, 588 usb_sndctrlpipe(us->pusb_dev, 0)); 589 us->pusb_dev->status = status; 590 } 591 USB_STOR_PRINTF(" error during command %02X" 592 " Stat = %lX\n", srb->cmd[0], 593 us->pusb_dev->status); 594 return result; 595 } 596 /* transfer the data payload for this command, if one exists*/ 597 598 USB_STOR_PRINTF("CB_transport: control msg returned %d," 599 " direction is %s to go 0x%lx\n", result, 600 dir_in ? "IN" : "OUT", srb->datalen); 601 if (srb->datalen) { 602 result = us_one_transfer(us, pipe, (char *)srb->pdata, 603 srb->datalen); 604 USB_STOR_PRINTF("CBI attempted to transfer data," 605 " result is %d status %lX, len %d\n", 606 result, us->pusb_dev->status, 607 us->pusb_dev->act_len); 608 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 609 break; 610 } /* if (srb->datalen) */ 611 else 612 break; 613 } 614 /* return result */ 615 616 return result; 617 } 618 619 620 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us) 621 { 622 int timeout; 623 624 us->ip_wanted = 1; 625 submit_int_msg(us->pusb_dev, us->irqpipe, 626 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 627 timeout = 1000; 628 while (timeout--) { 629 if ((volatile int *) us->ip_wanted == NULL) 630 break; 631 mdelay(10); 632 } 633 if (us->ip_wanted) { 634 printf(" Did not get interrupt on CBI\n"); 635 us->ip_wanted = 0; 636 return USB_STOR_TRANSPORT_ERROR; 637 } 638 USB_STOR_PRINTF 639 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n", 640 us->ip_data, us->pusb_dev->irq_act_len, 641 us->pusb_dev->irq_status); 642 /* UFI gives us ASC and ASCQ, like a request sense */ 643 if (us->subclass == US_SC_UFI) { 644 if (srb->cmd[0] == SCSI_REQ_SENSE || 645 srb->cmd[0] == SCSI_INQUIRY) 646 return USB_STOR_TRANSPORT_GOOD; /* Good */ 647 else if (us->ip_data) 648 return USB_STOR_TRANSPORT_FAILED; 649 else 650 return USB_STOR_TRANSPORT_GOOD; 651 } 652 /* otherwise, we interpret the data normally */ 653 switch (us->ip_data) { 654 case 0x0001: 655 return USB_STOR_TRANSPORT_GOOD; 656 case 0x0002: 657 return USB_STOR_TRANSPORT_FAILED; 658 default: 659 return USB_STOR_TRANSPORT_ERROR; 660 } /* switch */ 661 return USB_STOR_TRANSPORT_ERROR; 662 } 663 664 #define USB_TRANSPORT_UNKNOWN_RETRY 5 665 #define USB_TRANSPORT_NOT_READY_RETRY 10 666 667 /* clear a stall on an endpoint - special for BBB devices */ 668 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 669 { 670 int result; 671 672 /* ENDPOINT_HALT = 0, so set value to 0 */ 673 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 674 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 675 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5); 676 return result; 677 } 678 679 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 680 { 681 int result, retry; 682 int dir_in; 683 int actlen, data_actlen; 684 unsigned int pipe, pipein, pipeout; 685 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1); 686 #ifdef BBB_XPORT_TRACE 687 unsigned char *ptr; 688 int index; 689 #endif 690 691 dir_in = US_DIRECTION(srb->cmd[0]); 692 693 /* COMMAND phase */ 694 USB_STOR_PRINTF("COMMAND phase\n"); 695 result = usb_stor_BBB_comdat(srb, us); 696 if (result < 0) { 697 USB_STOR_PRINTF("failed to send CBW status %ld\n", 698 us->pusb_dev->status); 699 usb_stor_BBB_reset(us); 700 return USB_STOR_TRANSPORT_FAILED; 701 } 702 if (!(us->flags & USB_READY)) 703 mdelay(5); 704 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 705 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 706 /* DATA phase + error handling */ 707 data_actlen = 0; 708 /* no data, go immediately to the STATUS phase */ 709 if (srb->datalen == 0) 710 goto st; 711 USB_STOR_PRINTF("DATA phase\n"); 712 if (dir_in) 713 pipe = pipein; 714 else 715 pipe = pipeout; 716 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 717 &data_actlen, USB_CNTL_TIMEOUT * 5); 718 /* special handling of STALL in DATA phase */ 719 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 720 USB_STOR_PRINTF("DATA:stall\n"); 721 /* clear the STALL on the endpoint */ 722 result = usb_stor_BBB_clear_endpt_stall(us, 723 dir_in ? us->ep_in : us->ep_out); 724 if (result >= 0) 725 /* continue on to STATUS phase */ 726 goto st; 727 } 728 if (result < 0) { 729 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n", 730 us->pusb_dev->status); 731 usb_stor_BBB_reset(us); 732 return USB_STOR_TRANSPORT_FAILED; 733 } 734 #ifdef BBB_XPORT_TRACE 735 for (index = 0; index < data_actlen; index++) 736 printf("pdata[%d] %#x ", index, srb->pdata[index]); 737 printf("\n"); 738 #endif 739 /* STATUS phase + error handling */ 740 st: 741 retry = 0; 742 again: 743 USB_STOR_PRINTF("STATUS phase\n"); 744 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 745 &actlen, USB_CNTL_TIMEOUT*5); 746 747 /* special handling of STALL in STATUS phase */ 748 if ((result < 0) && (retry < 1) && 749 (us->pusb_dev->status & USB_ST_STALLED)) { 750 USB_STOR_PRINTF("STATUS:stall\n"); 751 /* clear the STALL on the endpoint */ 752 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 753 if (result >= 0 && (retry++ < 1)) 754 /* do a retry */ 755 goto again; 756 } 757 if (result < 0) { 758 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n", 759 us->pusb_dev->status); 760 usb_stor_BBB_reset(us); 761 return USB_STOR_TRANSPORT_FAILED; 762 } 763 #ifdef BBB_XPORT_TRACE 764 ptr = (unsigned char *)csw; 765 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 766 printf("ptr[%d] %#x ", index, ptr[index]); 767 printf("\n"); 768 #endif 769 /* misuse pipe to get the residue */ 770 pipe = le32_to_cpu(csw->dCSWDataResidue); 771 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 772 pipe = srb->datalen - data_actlen; 773 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 774 USB_STOR_PRINTF("!CSWSIGNATURE\n"); 775 usb_stor_BBB_reset(us); 776 return USB_STOR_TRANSPORT_FAILED; 777 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 778 USB_STOR_PRINTF("!Tag\n"); 779 usb_stor_BBB_reset(us); 780 return USB_STOR_TRANSPORT_FAILED; 781 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 782 USB_STOR_PRINTF(">PHASE\n"); 783 usb_stor_BBB_reset(us); 784 return USB_STOR_TRANSPORT_FAILED; 785 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 786 USB_STOR_PRINTF("=PHASE\n"); 787 usb_stor_BBB_reset(us); 788 return USB_STOR_TRANSPORT_FAILED; 789 } else if (data_actlen > srb->datalen) { 790 USB_STOR_PRINTF("transferred %dB instead of %ldB\n", 791 data_actlen, srb->datalen); 792 return USB_STOR_TRANSPORT_FAILED; 793 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 794 USB_STOR_PRINTF("FAILED\n"); 795 return USB_STOR_TRANSPORT_FAILED; 796 } 797 798 return result; 799 } 800 801 static int usb_stor_CB_transport(ccb *srb, struct us_data *us) 802 { 803 int result, status; 804 ccb *psrb; 805 ccb reqsrb; 806 int retry, notready; 807 808 psrb = &reqsrb; 809 status = USB_STOR_TRANSPORT_GOOD; 810 retry = 0; 811 notready = 0; 812 /* issue the command */ 813 do_retry: 814 result = usb_stor_CB_comdat(srb, us); 815 USB_STOR_PRINTF("command / Data returned %d, status %lX\n", 816 result, us->pusb_dev->status); 817 /* if this is an CBI Protocol, get IRQ */ 818 if (us->protocol == US_PR_CBI) { 819 status = usb_stor_CBI_get_status(srb, us); 820 /* if the status is error, report it */ 821 if (status == USB_STOR_TRANSPORT_ERROR) { 822 USB_STOR_PRINTF(" USB CBI Command Error\n"); 823 return status; 824 } 825 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 826 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 827 if (!us->ip_data) { 828 /* if the status is good, report it */ 829 if (status == USB_STOR_TRANSPORT_GOOD) { 830 USB_STOR_PRINTF(" USB CBI Command Good\n"); 831 return status; 832 } 833 } 834 } 835 /* do we have to issue an auto request? */ 836 /* HERE we have to check the result */ 837 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 838 USB_STOR_PRINTF("ERROR %lX\n", us->pusb_dev->status); 839 us->transport_reset(us); 840 return USB_STOR_TRANSPORT_ERROR; 841 } 842 if ((us->protocol == US_PR_CBI) && 843 ((srb->cmd[0] == SCSI_REQ_SENSE) || 844 (srb->cmd[0] == SCSI_INQUIRY))) { 845 /* do not issue an autorequest after request sense */ 846 USB_STOR_PRINTF("No auto request and good\n"); 847 return USB_STOR_TRANSPORT_GOOD; 848 } 849 /* issue an request_sense */ 850 memset(&psrb->cmd[0], 0, 12); 851 psrb->cmd[0] = SCSI_REQ_SENSE; 852 psrb->cmd[1] = srb->lun << 5; 853 psrb->cmd[4] = 18; 854 psrb->datalen = 18; 855 psrb->pdata = &srb->sense_buf[0]; 856 psrb->cmdlen = 12; 857 /* issue the command */ 858 result = usb_stor_CB_comdat(psrb, us); 859 USB_STOR_PRINTF("auto request returned %d\n", result); 860 /* if this is an CBI Protocol, get IRQ */ 861 if (us->protocol == US_PR_CBI) 862 status = usb_stor_CBI_get_status(psrb, us); 863 864 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 865 USB_STOR_PRINTF(" AUTO REQUEST ERROR %ld\n", 866 us->pusb_dev->status); 867 return USB_STOR_TRANSPORT_ERROR; 868 } 869 USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 870 srb->sense_buf[0], srb->sense_buf[2], 871 srb->sense_buf[12], srb->sense_buf[13]); 872 /* Check the auto request result */ 873 if ((srb->sense_buf[2] == 0) && 874 (srb->sense_buf[12] == 0) && 875 (srb->sense_buf[13] == 0)) { 876 /* ok, no sense */ 877 return USB_STOR_TRANSPORT_GOOD; 878 } 879 880 /* Check the auto request result */ 881 switch (srb->sense_buf[2]) { 882 case 0x01: 883 /* Recovered Error */ 884 return USB_STOR_TRANSPORT_GOOD; 885 break; 886 case 0x02: 887 /* Not Ready */ 888 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 889 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 890 " 0x%02X (NOT READY)\n", srb->cmd[0], 891 srb->sense_buf[0], srb->sense_buf[2], 892 srb->sense_buf[12], srb->sense_buf[13]); 893 return USB_STOR_TRANSPORT_FAILED; 894 } else { 895 mdelay(100); 896 goto do_retry; 897 } 898 break; 899 default: 900 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 901 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 902 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 903 srb->sense_buf[2], srb->sense_buf[12], 904 srb->sense_buf[13]); 905 return USB_STOR_TRANSPORT_FAILED; 906 } else 907 goto do_retry; 908 break; 909 } 910 return USB_STOR_TRANSPORT_FAILED; 911 } 912 913 914 static int usb_inquiry(ccb *srb, struct us_data *ss) 915 { 916 int retry, i; 917 retry = 5; 918 do { 919 memset(&srb->cmd[0], 0, 12); 920 srb->cmd[0] = SCSI_INQUIRY; 921 srb->cmd[1] = srb->lun << 5; 922 srb->cmd[4] = 36; 923 srb->datalen = 36; 924 srb->cmdlen = 12; 925 i = ss->transport(srb, ss); 926 USB_STOR_PRINTF("inquiry returns %d\n", i); 927 if (i == 0) 928 break; 929 } while (--retry); 930 931 if (!retry) { 932 printf("error in inquiry\n"); 933 return -1; 934 } 935 return 0; 936 } 937 938 static int usb_request_sense(ccb *srb, struct us_data *ss) 939 { 940 char *ptr; 941 942 ptr = (char *)srb->pdata; 943 memset(&srb->cmd[0], 0, 12); 944 srb->cmd[0] = SCSI_REQ_SENSE; 945 srb->cmd[1] = srb->lun << 5; 946 srb->cmd[4] = 18; 947 srb->datalen = 18; 948 srb->pdata = &srb->sense_buf[0]; 949 srb->cmdlen = 12; 950 ss->transport(srb, ss); 951 USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n", 952 srb->sense_buf[2], srb->sense_buf[12], 953 srb->sense_buf[13]); 954 srb->pdata = (uchar *)ptr; 955 return 0; 956 } 957 958 static int usb_test_unit_ready(ccb *srb, struct us_data *ss) 959 { 960 int retries = 10; 961 962 do { 963 memset(&srb->cmd[0], 0, 12); 964 srb->cmd[0] = SCSI_TST_U_RDY; 965 srb->cmd[1] = srb->lun << 5; 966 srb->datalen = 0; 967 srb->cmdlen = 12; 968 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) { 969 ss->flags |= USB_READY; 970 return 0; 971 } 972 usb_request_sense(srb, ss); 973 mdelay(100); 974 } while (retries--); 975 976 return -1; 977 } 978 979 static int usb_read_capacity(ccb *srb, struct us_data *ss) 980 { 981 int retry; 982 /* XXX retries */ 983 retry = 3; 984 do { 985 memset(&srb->cmd[0], 0, 12); 986 srb->cmd[0] = SCSI_RD_CAPAC; 987 srb->cmd[1] = srb->lun << 5; 988 srb->datalen = 8; 989 srb->cmdlen = 12; 990 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 991 return 0; 992 } while (retry--); 993 994 return -1; 995 } 996 997 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 998 unsigned short blocks) 999 { 1000 memset(&srb->cmd[0], 0, 12); 1001 srb->cmd[0] = SCSI_READ10; 1002 srb->cmd[1] = srb->lun << 5; 1003 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1004 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1005 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1006 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1007 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1008 srb->cmd[8] = (unsigned char) blocks & 0xff; 1009 srb->cmdlen = 12; 1010 USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks); 1011 return ss->transport(srb, ss); 1012 } 1013 1014 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 1015 unsigned short blocks) 1016 { 1017 memset(&srb->cmd[0], 0, 12); 1018 srb->cmd[0] = SCSI_WRITE10; 1019 srb->cmd[1] = srb->lun << 5; 1020 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1021 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1022 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1023 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1024 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1025 srb->cmd[8] = (unsigned char) blocks & 0xff; 1026 srb->cmdlen = 12; 1027 USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks); 1028 return ss->transport(srb, ss); 1029 } 1030 1031 1032 #ifdef CONFIG_USB_BIN_FIXUP 1033 /* 1034 * Some USB storage devices queried for SCSI identification data respond with 1035 * binary strings, which if output to the console freeze the terminal. The 1036 * workaround is to modify the vendor and product strings read from such 1037 * device with proper values (as reported by 'usb info'). 1038 * 1039 * Vendor and product length limits are taken from the definition of 1040 * block_dev_desc_t in include/part.h. 1041 */ 1042 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1043 unsigned char vendor[], 1044 unsigned char product[]) { 1045 const unsigned char max_vendor_len = 40; 1046 const unsigned char max_product_len = 20; 1047 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1048 strncpy((char *)vendor, "SMSC", max_vendor_len); 1049 strncpy((char *)product, "Flash Media Cntrller", 1050 max_product_len); 1051 } 1052 } 1053 #endif /* CONFIG_USB_BIN_FIXUP */ 1054 1055 unsigned long usb_stor_read(int device, unsigned long blknr, 1056 lbaint_t blkcnt, void *buffer) 1057 { 1058 lbaint_t start, blks; 1059 uintptr_t buf_addr; 1060 unsigned short smallblks; 1061 struct usb_device *dev; 1062 struct us_data *ss; 1063 int retry, i; 1064 ccb *srb = &usb_ccb; 1065 1066 if (blkcnt == 0) 1067 return 0; 1068 1069 device &= 0xff; 1070 /* Setup device */ 1071 USB_STOR_PRINTF("\nusb_read: dev %d \n", device); 1072 dev = NULL; 1073 for (i = 0; i < USB_MAX_DEVICE; i++) { 1074 dev = usb_get_dev_index(i); 1075 if (dev == NULL) 1076 return 0; 1077 if (dev->devnum == usb_dev_desc[device].target) 1078 break; 1079 } 1080 ss = (struct us_data *)dev->privptr; 1081 1082 usb_disable_asynch(1); /* asynch transfer not allowed */ 1083 srb->lun = usb_dev_desc[device].lun; 1084 buf_addr = (unsigned long)buffer; 1085 start = blknr; 1086 blks = blkcnt; 1087 1088 USB_STOR_PRINTF("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF 1089 " buffer %lx\n", device, start, blks, buf_addr); 1090 1091 do { 1092 /* XXX need some comment here */ 1093 retry = 2; 1094 srb->pdata = (unsigned char *)buf_addr; 1095 if (blks > USB_MAX_XFER_BLK) 1096 smallblks = USB_MAX_XFER_BLK; 1097 else 1098 smallblks = (unsigned short) blks; 1099 retry_it: 1100 if (smallblks == USB_MAX_XFER_BLK) 1101 usb_show_progress(); 1102 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1103 srb->pdata = (unsigned char *)buf_addr; 1104 if (usb_read_10(srb, ss, start, smallblks)) { 1105 USB_STOR_PRINTF("Read ERROR\n"); 1106 usb_request_sense(srb, ss); 1107 if (retry--) 1108 goto retry_it; 1109 blkcnt -= blks; 1110 break; 1111 } 1112 start += smallblks; 1113 blks -= smallblks; 1114 buf_addr += srb->datalen; 1115 } while (blks != 0); 1116 ss->flags &= ~USB_READY; 1117 1118 USB_STOR_PRINTF("usb_read: end startblk " LBAF 1119 ", blccnt %x buffer %lx\n", 1120 start, smallblks, buf_addr); 1121 1122 usb_disable_asynch(0); /* asynch transfer allowed */ 1123 if (blkcnt >= USB_MAX_XFER_BLK) 1124 debug("\n"); 1125 return blkcnt; 1126 } 1127 1128 unsigned long usb_stor_write(int device, unsigned long blknr, 1129 lbaint_t blkcnt, const void *buffer) 1130 { 1131 lbaint_t start, blks; 1132 uintptr_t buf_addr; 1133 unsigned short smallblks; 1134 struct usb_device *dev; 1135 struct us_data *ss; 1136 int retry, i; 1137 ccb *srb = &usb_ccb; 1138 1139 if (blkcnt == 0) 1140 return 0; 1141 1142 device &= 0xff; 1143 /* Setup device */ 1144 USB_STOR_PRINTF("\nusb_write: dev %d \n", device); 1145 dev = NULL; 1146 for (i = 0; i < USB_MAX_DEVICE; i++) { 1147 dev = usb_get_dev_index(i); 1148 if (dev == NULL) 1149 return 0; 1150 if (dev->devnum == usb_dev_desc[device].target) 1151 break; 1152 } 1153 ss = (struct us_data *)dev->privptr; 1154 1155 usb_disable_asynch(1); /* asynch transfer not allowed */ 1156 1157 srb->lun = usb_dev_desc[device].lun; 1158 buf_addr = (unsigned long)buffer; 1159 start = blknr; 1160 blks = blkcnt; 1161 1162 USB_STOR_PRINTF("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF 1163 " buffer %lx\n", device, start, blks, buf_addr); 1164 1165 do { 1166 /* If write fails retry for max retry count else 1167 * return with number of blocks written successfully. 1168 */ 1169 retry = 2; 1170 srb->pdata = (unsigned char *)buf_addr; 1171 if (blks > USB_MAX_XFER_BLK) 1172 smallblks = USB_MAX_XFER_BLK; 1173 else 1174 smallblks = (unsigned short) blks; 1175 retry_it: 1176 if (smallblks == USB_MAX_XFER_BLK) 1177 usb_show_progress(); 1178 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1179 srb->pdata = (unsigned char *)buf_addr; 1180 if (usb_write_10(srb, ss, start, smallblks)) { 1181 USB_STOR_PRINTF("Write ERROR\n"); 1182 usb_request_sense(srb, ss); 1183 if (retry--) 1184 goto retry_it; 1185 blkcnt -= blks; 1186 break; 1187 } 1188 start += smallblks; 1189 blks -= smallblks; 1190 buf_addr += srb->datalen; 1191 } while (blks != 0); 1192 ss->flags &= ~USB_READY; 1193 1194 USB_STOR_PRINTF("usb_write: end startblk " LBAF 1195 ", blccnt %x buffer %lx\n", 1196 start, smallblks, buf_addr); 1197 1198 usb_disable_asynch(0); /* asynch transfer allowed */ 1199 if (blkcnt >= USB_MAX_XFER_BLK) 1200 debug("\n"); 1201 return blkcnt; 1202 1203 } 1204 1205 /* Probe to see if a new device is actually a Storage device */ 1206 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1207 struct us_data *ss) 1208 { 1209 struct usb_interface *iface; 1210 int i; 1211 unsigned int flags = 0; 1212 1213 int protocol = 0; 1214 int subclass = 0; 1215 1216 /* let's examine the device now */ 1217 iface = &dev->config.if_desc[ifnum]; 1218 1219 #if 0 1220 /* this is the place to patch some storage devices */ 1221 USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor, 1222 dev->descriptor.idProduct); 1223 1224 if ((dev->descriptor.idVendor) == 0x066b && 1225 (dev->descriptor.idProduct) == 0x0103) { 1226 USB_STOR_PRINTF("patched for E-USB\n"); 1227 protocol = US_PR_CB; 1228 subclass = US_SC_UFI; /* an assumption */ 1229 } 1230 #endif 1231 1232 if (dev->descriptor.bDeviceClass != 0 || 1233 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1234 iface->desc.bInterfaceSubClass < US_SC_MIN || 1235 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1236 /* if it's not a mass storage, we go no further */ 1237 return 0; 1238 } 1239 1240 memset(ss, 0, sizeof(struct us_data)); 1241 1242 /* At this point, we know we've got a live one */ 1243 USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n"); 1244 1245 /* Initialize the us_data structure with some useful info */ 1246 ss->flags = flags; 1247 ss->ifnum = ifnum; 1248 ss->pusb_dev = dev; 1249 ss->attention_done = 0; 1250 1251 /* If the device has subclass and protocol, then use that. Otherwise, 1252 * take data from the specific interface. 1253 */ 1254 if (subclass) { 1255 ss->subclass = subclass; 1256 ss->protocol = protocol; 1257 } else { 1258 ss->subclass = iface->desc.bInterfaceSubClass; 1259 ss->protocol = iface->desc.bInterfaceProtocol; 1260 } 1261 1262 /* set the handler pointers based on the protocol */ 1263 USB_STOR_PRINTF("Transport: "); 1264 switch (ss->protocol) { 1265 case US_PR_CB: 1266 USB_STOR_PRINTF("Control/Bulk\n"); 1267 ss->transport = usb_stor_CB_transport; 1268 ss->transport_reset = usb_stor_CB_reset; 1269 break; 1270 1271 case US_PR_CBI: 1272 USB_STOR_PRINTF("Control/Bulk/Interrupt\n"); 1273 ss->transport = usb_stor_CB_transport; 1274 ss->transport_reset = usb_stor_CB_reset; 1275 break; 1276 case US_PR_BULK: 1277 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n"); 1278 ss->transport = usb_stor_BBB_transport; 1279 ss->transport_reset = usb_stor_BBB_reset; 1280 break; 1281 default: 1282 printf("USB Storage Transport unknown / not yet implemented\n"); 1283 return 0; 1284 break; 1285 } 1286 1287 /* 1288 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1289 * An optional interrupt is OK (necessary for CBI protocol). 1290 * We will ignore any others. 1291 */ 1292 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1293 /* is it an BULK endpoint? */ 1294 if ((iface->ep_desc[i].bmAttributes & 1295 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1296 if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN) 1297 ss->ep_in = iface->ep_desc[i].bEndpointAddress & 1298 USB_ENDPOINT_NUMBER_MASK; 1299 else 1300 ss->ep_out = 1301 iface->ep_desc[i].bEndpointAddress & 1302 USB_ENDPOINT_NUMBER_MASK; 1303 } 1304 1305 /* is it an interrupt endpoint? */ 1306 if ((iface->ep_desc[i].bmAttributes & 1307 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1308 ss->ep_int = iface->ep_desc[i].bEndpointAddress & 1309 USB_ENDPOINT_NUMBER_MASK; 1310 ss->irqinterval = iface->ep_desc[i].bInterval; 1311 } 1312 } 1313 USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n", 1314 ss->ep_in, ss->ep_out, ss->ep_int); 1315 1316 /* Do some basic sanity checks, and bail if we find a problem */ 1317 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1318 !ss->ep_in || !ss->ep_out || 1319 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1320 USB_STOR_PRINTF("Problems with device\n"); 1321 return 0; 1322 } 1323 /* set class specific stuff */ 1324 /* We only handle certain protocols. Currently, these are 1325 * the only ones. 1326 * The SFF8070 accepts the requests used in u-boot 1327 */ 1328 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1329 ss->subclass != US_SC_8070) { 1330 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1331 return 0; 1332 } 1333 if (ss->ep_int) { 1334 /* we had found an interrupt endpoint, prepare irq pipe 1335 * set up the IRQ pipe and handler 1336 */ 1337 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1338 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1339 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1340 dev->irq_handle = usb_stor_irq; 1341 } 1342 dev->privptr = (void *)ss; 1343 return 1; 1344 } 1345 1346 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1347 block_dev_desc_t *dev_desc) 1348 { 1349 unsigned char perq, modi; 1350 ALLOC_CACHE_ALIGN_BUFFER(unsigned long, cap, 2); 1351 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, usb_stor_buf, 36); 1352 unsigned long *capacity, *blksz; 1353 ccb *pccb = &usb_ccb; 1354 1355 pccb->pdata = usb_stor_buf; 1356 1357 dev_desc->target = dev->devnum; 1358 pccb->lun = dev_desc->lun; 1359 USB_STOR_PRINTF(" address %d\n", dev_desc->target); 1360 1361 if (usb_inquiry(pccb, ss)) 1362 return -1; 1363 1364 perq = usb_stor_buf[0]; 1365 modi = usb_stor_buf[1]; 1366 1367 if ((perq & 0x1f) == 0x1f) { 1368 /* skip unknown devices */ 1369 return 0; 1370 } 1371 if ((modi&0x80) == 0x80) { 1372 /* drive is removable */ 1373 dev_desc->removable = 1; 1374 } 1375 memcpy(&dev_desc->vendor[0], (const void *) &usb_stor_buf[8], 8); 1376 memcpy(&dev_desc->product[0], (const void *) &usb_stor_buf[16], 16); 1377 memcpy(&dev_desc->revision[0], (const void *) &usb_stor_buf[32], 4); 1378 dev_desc->vendor[8] = 0; 1379 dev_desc->product[16] = 0; 1380 dev_desc->revision[4] = 0; 1381 #ifdef CONFIG_USB_BIN_FIXUP 1382 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1383 (uchar *)dev_desc->product); 1384 #endif /* CONFIG_USB_BIN_FIXUP */ 1385 USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1386 usb_stor_buf[3]); 1387 if (usb_test_unit_ready(pccb, ss)) { 1388 printf("Device NOT ready\n" 1389 " Request Sense returned %02X %02X %02X\n", 1390 pccb->sense_buf[2], pccb->sense_buf[12], 1391 pccb->sense_buf[13]); 1392 if (dev_desc->removable == 1) { 1393 dev_desc->type = perq; 1394 return 1; 1395 } 1396 return 0; 1397 } 1398 pccb->pdata = (unsigned char *)&cap[0]; 1399 memset(pccb->pdata, 0, 8); 1400 if (usb_read_capacity(pccb, ss) != 0) { 1401 printf("READ_CAP ERROR\n"); 1402 cap[0] = 2880; 1403 cap[1] = 0x200; 1404 } 1405 ss->flags &= ~USB_READY; 1406 USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0], 1407 cap[1]); 1408 #if 0 1409 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1410 cap[0] >>= 16; 1411 #endif 1412 cap[0] = cpu_to_be32(cap[0]); 1413 cap[1] = cpu_to_be32(cap[1]); 1414 1415 /* this assumes bigendian! */ 1416 cap[0] += 1; 1417 capacity = &cap[0]; 1418 blksz = &cap[1]; 1419 USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n", 1420 *capacity, *blksz); 1421 dev_desc->lba = *capacity; 1422 dev_desc->blksz = *blksz; 1423 dev_desc->type = perq; 1424 USB_STOR_PRINTF(" address %d\n", dev_desc->target); 1425 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); 1426 1427 init_part(dev_desc); 1428 1429 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); 1430 return 1; 1431 } 1432