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 unsigned long max_xfer_blk; /* Max blocks per xfer */ 154 ccb *srb; /* current srb */ 155 trans_reset transport_reset; /* reset routine */ 156 trans_cmnd transport; /* transport routine */ 157 }; 158 159 static struct us_data usb_stor[USB_MAX_STOR_DEV]; 160 161 162 #define USB_STOR_TRANSPORT_GOOD 0 163 #define USB_STOR_TRANSPORT_FAILED -1 164 #define USB_STOR_TRANSPORT_ERROR -2 165 166 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, 167 block_dev_desc_t *dev_desc); 168 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 169 struct us_data *ss); 170 unsigned long usb_stor_read(int device, unsigned long blknr, 171 unsigned long blkcnt, void *buffer); 172 unsigned long usb_stor_write(int device, unsigned long blknr, 173 unsigned long blkcnt, const void *buffer); 174 struct usb_device * usb_get_dev_index(int index); 175 void uhci_show_temp_int_td(void); 176 177 #ifdef CONFIG_PARTITIONS 178 block_dev_desc_t *usb_stor_get_dev(int index) 179 { 180 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL; 181 } 182 #endif 183 184 void usb_show_progress(void) 185 { 186 debug("."); 187 } 188 189 /******************************************************************************* 190 * show info on storage devices; 'usb start/init' must be invoked earlier 191 * as we only retrieve structures populated during devices initialization 192 */ 193 int usb_stor_info(void) 194 { 195 int i; 196 197 if (usb_max_devs > 0) { 198 for (i = 0; i < usb_max_devs; i++) { 199 printf(" Device %d: ", i); 200 dev_print(&usb_dev_desc[i]); 201 } 202 return 0; 203 } 204 205 printf("No storage devices, perhaps not 'usb start'ed..?\n"); 206 return 1; 207 } 208 209 static unsigned int usb_get_max_lun(struct us_data *us) 210 { 211 int len; 212 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1); 213 len = usb_control_msg(us->pusb_dev, 214 usb_rcvctrlpipe(us->pusb_dev, 0), 215 US_BBB_GET_MAX_LUN, 216 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 217 0, us->ifnum, 218 result, sizeof(char), 219 USB_CNTL_TIMEOUT * 5); 220 USB_STOR_PRINTF("Get Max LUN -> len = %i, result = %i\n", 221 len, (int) *result); 222 return (len > 0) ? *result : 0; 223 } 224 225 /******************************************************************************* 226 * scan the usb and reports device info 227 * to the user if mode = 1 228 * returns current device or -1 if no 229 */ 230 int usb_stor_scan(int mode) 231 { 232 unsigned char i; 233 struct usb_device *dev; 234 235 if (mode == 1) 236 printf(" scanning bus for storage devices... "); 237 238 usb_disable_asynch(1); /* asynch transfer not allowed */ 239 240 for (i = 0; i < USB_MAX_STOR_DEV; i++) { 241 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t)); 242 usb_dev_desc[i].if_type = IF_TYPE_USB; 243 usb_dev_desc[i].dev = i; 244 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN; 245 usb_dev_desc[i].target = 0xff; 246 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN; 247 usb_dev_desc[i].block_read = usb_stor_read; 248 usb_dev_desc[i].block_write = usb_stor_write; 249 } 250 251 usb_max_devs = 0; 252 for (i = 0; i < USB_MAX_DEVICE; i++) { 253 dev = usb_get_dev_index(i); /* get device */ 254 USB_STOR_PRINTF("i=%d\n", i); 255 if (dev == NULL) 256 break; /* no more devices available */ 257 258 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) { 259 /* OK, it's a storage device. Iterate over its LUNs 260 * and populate `usb_dev_desc'. 261 */ 262 int lun, max_lun, start = usb_max_devs; 263 264 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); 265 for (lun = 0; 266 lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; 267 lun++) { 268 usb_dev_desc[usb_max_devs].lun = lun; 269 if (usb_stor_get_info(dev, &usb_stor[start], 270 &usb_dev_desc[usb_max_devs]) == 1) { 271 usb_max_devs++; 272 } 273 } 274 } 275 /* if storage device */ 276 if (usb_max_devs == USB_MAX_STOR_DEV) { 277 printf("max USB Storage Device reached: %d stopping\n", 278 usb_max_devs); 279 break; 280 } 281 } /* for */ 282 283 usb_disable_asynch(0); /* asynch transfer allowed */ 284 printf("%d Storage Device(s) found\n", usb_max_devs); 285 if (usb_max_devs > 0) 286 return 0; 287 return -1; 288 } 289 290 static int usb_stor_irq(struct usb_device *dev) 291 { 292 struct us_data *us; 293 us = (struct us_data *)dev->privptr; 294 295 if (us->ip_wanted) 296 us->ip_wanted = 0; 297 return 0; 298 } 299 300 301 #ifdef USB_STOR_DEBUG 302 303 static void usb_show_srb(ccb *pccb) 304 { 305 int i; 306 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); 307 for (i = 0; i < 12; i++) 308 printf("%02X ", pccb->cmd[i]); 309 printf("\n"); 310 } 311 312 static void display_int_status(unsigned long tmp) 313 { 314 printf("Status: %s %s %s %s %s %s %s\n", 315 (tmp & USB_ST_ACTIVE) ? "Active" : "", 316 (tmp & USB_ST_STALLED) ? "Stalled" : "", 317 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", 318 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", 319 (tmp & USB_ST_NAK_REC) ? "NAKed" : "", 320 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", 321 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); 322 } 323 #endif 324 /*********************************************************************** 325 * Data transfer routines 326 ***********************************************************************/ 327 328 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) 329 { 330 int max_size; 331 int this_xfer; 332 int result; 333 int partial; 334 int maxtry; 335 int stat; 336 337 /* determine the maximum packet size for these transfers */ 338 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; 339 340 /* while we have data left to transfer */ 341 while (length) { 342 343 /* calculate how long this will be -- maximum or a remainder */ 344 this_xfer = length > max_size ? max_size : length; 345 length -= this_xfer; 346 347 /* setup the retry counter */ 348 maxtry = 10; 349 350 /* set up the transfer loop */ 351 do { 352 /* transfer the data */ 353 USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n", 354 (unsigned int)buf, this_xfer, 11 - maxtry); 355 result = usb_bulk_msg(us->pusb_dev, pipe, buf, 356 this_xfer, &partial, 357 USB_CNTL_TIMEOUT * 5); 358 USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n", 359 result, partial, this_xfer); 360 if (us->pusb_dev->status != 0) { 361 /* if we stall, we need to clear it before 362 * we go on 363 */ 364 #ifdef USB_STOR_DEBUG 365 display_int_status(us->pusb_dev->status); 366 #endif 367 if (us->pusb_dev->status & USB_ST_STALLED) { 368 USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe); 369 stat = us->pusb_dev->status; 370 usb_clear_halt(us->pusb_dev, pipe); 371 us->pusb_dev->status = stat; 372 if (this_xfer == partial) { 373 USB_STOR_PRINTF("bulk transferred with error %lX, but data ok\n", us->pusb_dev->status); 374 return 0; 375 } 376 else 377 return result; 378 } 379 if (us->pusb_dev->status & USB_ST_NAK_REC) { 380 USB_STOR_PRINTF("Device NAKed bulk_msg\n"); 381 return result; 382 } 383 USB_STOR_PRINTF("bulk transferred with error"); 384 if (this_xfer == partial) { 385 USB_STOR_PRINTF(" %ld, but data ok\n", 386 us->pusb_dev->status); 387 return 0; 388 } 389 /* if our try counter reaches 0, bail out */ 390 USB_STOR_PRINTF(" %ld, data %d\n", 391 us->pusb_dev->status, partial); 392 if (!maxtry--) 393 return result; 394 } 395 /* update to show what data was transferred */ 396 this_xfer -= partial; 397 buf += partial; 398 /* continue until this transfer is done */ 399 } while (this_xfer); 400 } 401 402 /* if we get here, we're done and successful */ 403 return 0; 404 } 405 406 static int usb_stor_BBB_reset(struct us_data *us) 407 { 408 int result; 409 unsigned int pipe; 410 411 /* 412 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) 413 * 414 * For Reset Recovery the host shall issue in the following order: 415 * a) a Bulk-Only Mass Storage Reset 416 * b) a Clear Feature HALT to the Bulk-In endpoint 417 * c) a Clear Feature HALT to the Bulk-Out endpoint 418 * 419 * This is done in 3 steps. 420 * 421 * If the reset doesn't succeed, the device should be port reset. 422 * 423 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. 424 */ 425 USB_STOR_PRINTF("BBB_reset\n"); 426 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 427 US_BBB_RESET, 428 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 429 0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5); 430 431 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 432 USB_STOR_PRINTF("RESET:stall\n"); 433 return -1; 434 } 435 436 /* long wait for reset */ 437 mdelay(150); 438 USB_STOR_PRINTF("BBB_reset result %d: status %lX reset\n", result, 439 us->pusb_dev->status); 440 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 441 result = usb_clear_halt(us->pusb_dev, pipe); 442 /* long wait for reset */ 443 mdelay(150); 444 USB_STOR_PRINTF("BBB_reset result %d: status %lX clearing IN endpoint\n", 445 result, us->pusb_dev->status); 446 /* long wait for reset */ 447 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 448 result = usb_clear_halt(us->pusb_dev, pipe); 449 mdelay(150); 450 USB_STOR_PRINTF("BBB_reset result %d: status %lX" 451 " clearing OUT endpoint\n", result, 452 us->pusb_dev->status); 453 USB_STOR_PRINTF("BBB_reset done\n"); 454 return 0; 455 } 456 457 /* FIXME: this reset function doesn't really reset the port, and it 458 * should. Actually it should probably do what it's doing here, and 459 * reset the port physically 460 */ 461 static int usb_stor_CB_reset(struct us_data *us) 462 { 463 unsigned char cmd[12]; 464 int result; 465 466 USB_STOR_PRINTF("CB_reset\n"); 467 memset(cmd, 0xff, sizeof(cmd)); 468 cmd[0] = SCSI_SEND_DIAG; 469 cmd[1] = 4; 470 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 471 US_CBI_ADSC, 472 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 473 0, us->ifnum, cmd, sizeof(cmd), 474 USB_CNTL_TIMEOUT * 5); 475 476 /* long wait for reset */ 477 mdelay(1500); 478 USB_STOR_PRINTF("CB_reset result %d: status %lX" 479 " clearing endpoint halt\n", result, 480 us->pusb_dev->status); 481 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in)); 482 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out)); 483 484 USB_STOR_PRINTF("CB_reset done\n"); 485 return 0; 486 } 487 488 /* 489 * Set up the command for a BBB device. Note that the actual SCSI 490 * command is copied into cbw.CBWCDB. 491 */ 492 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us) 493 { 494 int result; 495 int actlen; 496 int dir_in; 497 unsigned int pipe; 498 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_cbw_t, cbw, 1); 499 500 dir_in = US_DIRECTION(srb->cmd[0]); 501 502 #ifdef BBB_COMDAT_TRACE 503 printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n", 504 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, 505 srb->pdata); 506 if (srb->cmdlen) { 507 for (result = 0; result < srb->cmdlen; result++) 508 printf("cmd[%d] %#x ", result, srb->cmd[result]); 509 printf("\n"); 510 } 511 #endif 512 /* sanity checks */ 513 if (!(srb->cmdlen <= CBWCDBLENGTH)) { 514 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n"); 515 return -1; 516 } 517 518 /* always OUT to the ep */ 519 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 520 521 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE); 522 cbw->dCBWTag = cpu_to_le32(CBWTag++); 523 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen); 524 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT); 525 cbw->bCBWLUN = srb->lun; 526 cbw->bCDBLength = srb->cmdlen; 527 /* copy the command data into the CBW command data buffer */ 528 /* DST SRC LEN!!! */ 529 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen); 530 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE, 531 &actlen, USB_CNTL_TIMEOUT * 5); 532 if (result < 0) 533 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n"); 534 return result; 535 } 536 537 /* FIXME: we also need a CBI_command which sets up the completion 538 * interrupt, and waits for it 539 */ 540 int usb_stor_CB_comdat(ccb *srb, struct us_data *us) 541 { 542 int result = 0; 543 int dir_in, retry; 544 unsigned int pipe; 545 unsigned long status; 546 547 retry = 5; 548 dir_in = US_DIRECTION(srb->cmd[0]); 549 550 if (dir_in) 551 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 552 else 553 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 554 555 while (retry--) { 556 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry); 557 #ifdef USB_STOR_DEBUG 558 usb_show_srb(srb); 559 #endif 560 /* let's send the command via the control pipe */ 561 result = usb_control_msg(us->pusb_dev, 562 usb_sndctrlpipe(us->pusb_dev , 0), 563 US_CBI_ADSC, 564 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 565 0, us->ifnum, 566 srb->cmd, srb->cmdlen, 567 USB_CNTL_TIMEOUT * 5); 568 USB_STOR_PRINTF("CB_transport: control msg returned %d," 569 " status %lX\n", result, us->pusb_dev->status); 570 /* check the return code for the command */ 571 if (result < 0) { 572 if (us->pusb_dev->status & USB_ST_STALLED) { 573 status = us->pusb_dev->status; 574 USB_STOR_PRINTF(" stall during command found," 575 " clear pipe\n"); 576 usb_clear_halt(us->pusb_dev, 577 usb_sndctrlpipe(us->pusb_dev, 0)); 578 us->pusb_dev->status = status; 579 } 580 USB_STOR_PRINTF(" error during command %02X" 581 " Stat = %lX\n", srb->cmd[0], 582 us->pusb_dev->status); 583 return result; 584 } 585 /* transfer the data payload for this command, if one exists*/ 586 587 USB_STOR_PRINTF("CB_transport: control msg returned %d," 588 " direction is %s to go 0x%lx\n", result, 589 dir_in ? "IN" : "OUT", srb->datalen); 590 if (srb->datalen) { 591 result = us_one_transfer(us, pipe, (char *)srb->pdata, 592 srb->datalen); 593 USB_STOR_PRINTF("CBI attempted to transfer data," 594 " result is %d status %lX, len %d\n", 595 result, us->pusb_dev->status, 596 us->pusb_dev->act_len); 597 if (!(us->pusb_dev->status & USB_ST_NAK_REC)) 598 break; 599 } /* if (srb->datalen) */ 600 else 601 break; 602 } 603 /* return result */ 604 605 return result; 606 } 607 608 609 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us) 610 { 611 int timeout; 612 613 us->ip_wanted = 1; 614 submit_int_msg(us->pusb_dev, us->irqpipe, 615 (void *) &us->ip_data, us->irqmaxp, us->irqinterval); 616 timeout = 1000; 617 while (timeout--) { 618 if ((volatile int *) us->ip_wanted == 0) 619 break; 620 mdelay(10); 621 } 622 if (us->ip_wanted) { 623 printf(" Did not get interrupt on CBI\n"); 624 us->ip_wanted = 0; 625 return USB_STOR_TRANSPORT_ERROR; 626 } 627 USB_STOR_PRINTF 628 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n", 629 us->ip_data, us->pusb_dev->irq_act_len, 630 us->pusb_dev->irq_status); 631 /* UFI gives us ASC and ASCQ, like a request sense */ 632 if (us->subclass == US_SC_UFI) { 633 if (srb->cmd[0] == SCSI_REQ_SENSE || 634 srb->cmd[0] == SCSI_INQUIRY) 635 return USB_STOR_TRANSPORT_GOOD; /* Good */ 636 else if (us->ip_data) 637 return USB_STOR_TRANSPORT_FAILED; 638 else 639 return USB_STOR_TRANSPORT_GOOD; 640 } 641 /* otherwise, we interpret the data normally */ 642 switch (us->ip_data) { 643 case 0x0001: 644 return USB_STOR_TRANSPORT_GOOD; 645 case 0x0002: 646 return USB_STOR_TRANSPORT_FAILED; 647 default: 648 return USB_STOR_TRANSPORT_ERROR; 649 } /* switch */ 650 return USB_STOR_TRANSPORT_ERROR; 651 } 652 653 #define USB_TRANSPORT_UNKNOWN_RETRY 5 654 #define USB_TRANSPORT_NOT_READY_RETRY 10 655 656 /* clear a stall on an endpoint - special for BBB devices */ 657 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) 658 { 659 int result; 660 661 /* ENDPOINT_HALT = 0, so set value to 0 */ 662 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), 663 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 664 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5); 665 return result; 666 } 667 668 int usb_stor_BBB_transport(ccb *srb, struct us_data *us) 669 { 670 int result, retry; 671 int dir_in; 672 int actlen, data_actlen; 673 unsigned int pipe, pipein, pipeout; 674 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1); 675 #ifdef BBB_XPORT_TRACE 676 unsigned char *ptr; 677 int index; 678 #endif 679 680 dir_in = US_DIRECTION(srb->cmd[0]); 681 682 /* COMMAND phase */ 683 USB_STOR_PRINTF("COMMAND phase\n"); 684 result = usb_stor_BBB_comdat(srb, us); 685 if (result < 0) { 686 USB_STOR_PRINTF("failed to send CBW status %ld\n", 687 us->pusb_dev->status); 688 usb_stor_BBB_reset(us); 689 return USB_STOR_TRANSPORT_FAILED; 690 } 691 mdelay(5); 692 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); 693 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); 694 /* DATA phase + error handling */ 695 data_actlen = 0; 696 /* no data, go immediately to the STATUS phase */ 697 if (srb->datalen == 0) 698 goto st; 699 USB_STOR_PRINTF("DATA phase\n"); 700 if (dir_in) 701 pipe = pipein; 702 else 703 pipe = pipeout; 704 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, 705 &data_actlen, USB_CNTL_TIMEOUT * 5); 706 /* special handling of STALL in DATA phase */ 707 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { 708 USB_STOR_PRINTF("DATA:stall\n"); 709 /* clear the STALL on the endpoint */ 710 result = usb_stor_BBB_clear_endpt_stall(us, 711 dir_in ? us->ep_in : us->ep_out); 712 if (result >= 0) 713 /* continue on to STATUS phase */ 714 goto st; 715 } 716 if (result < 0) { 717 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n", 718 us->pusb_dev->status); 719 usb_stor_BBB_reset(us); 720 return USB_STOR_TRANSPORT_FAILED; 721 } 722 #ifdef BBB_XPORT_TRACE 723 for (index = 0; index < data_actlen; index++) 724 printf("pdata[%d] %#x ", index, srb->pdata[index]); 725 printf("\n"); 726 #endif 727 /* STATUS phase + error handling */ 728 st: 729 retry = 0; 730 again: 731 USB_STOR_PRINTF("STATUS phase\n"); 732 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE, 733 &actlen, USB_CNTL_TIMEOUT*5); 734 735 /* special handling of STALL in STATUS phase */ 736 if ((result < 0) && (retry < 1) && 737 (us->pusb_dev->status & USB_ST_STALLED)) { 738 USB_STOR_PRINTF("STATUS:stall\n"); 739 /* clear the STALL on the endpoint */ 740 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); 741 if (result >= 0 && (retry++ < 1)) 742 /* do a retry */ 743 goto again; 744 } 745 if (result < 0) { 746 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n", 747 us->pusb_dev->status); 748 usb_stor_BBB_reset(us); 749 return USB_STOR_TRANSPORT_FAILED; 750 } 751 #ifdef BBB_XPORT_TRACE 752 ptr = (unsigned char *)csw; 753 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) 754 printf("ptr[%d] %#x ", index, ptr[index]); 755 printf("\n"); 756 #endif 757 /* misuse pipe to get the residue */ 758 pipe = le32_to_cpu(csw->dCSWDataResidue); 759 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) 760 pipe = srb->datalen - data_actlen; 761 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) { 762 USB_STOR_PRINTF("!CSWSIGNATURE\n"); 763 usb_stor_BBB_reset(us); 764 return USB_STOR_TRANSPORT_FAILED; 765 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) { 766 USB_STOR_PRINTF("!Tag\n"); 767 usb_stor_BBB_reset(us); 768 return USB_STOR_TRANSPORT_FAILED; 769 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) { 770 USB_STOR_PRINTF(">PHASE\n"); 771 usb_stor_BBB_reset(us); 772 return USB_STOR_TRANSPORT_FAILED; 773 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) { 774 USB_STOR_PRINTF("=PHASE\n"); 775 usb_stor_BBB_reset(us); 776 return USB_STOR_TRANSPORT_FAILED; 777 } else if (data_actlen > srb->datalen) { 778 USB_STOR_PRINTF("transferred %dB instead of %ldB\n", 779 data_actlen, srb->datalen); 780 return USB_STOR_TRANSPORT_FAILED; 781 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) { 782 USB_STOR_PRINTF("FAILED\n"); 783 return USB_STOR_TRANSPORT_FAILED; 784 } 785 786 return result; 787 } 788 789 int usb_stor_CB_transport(ccb *srb, struct us_data *us) 790 { 791 int result, status; 792 ccb *psrb; 793 ccb reqsrb; 794 int retry, notready; 795 796 psrb = &reqsrb; 797 status = USB_STOR_TRANSPORT_GOOD; 798 retry = 0; 799 notready = 0; 800 /* issue the command */ 801 do_retry: 802 result = usb_stor_CB_comdat(srb, us); 803 USB_STOR_PRINTF("command / Data returned %d, status %lX\n", 804 result, us->pusb_dev->status); 805 /* if this is an CBI Protocol, get IRQ */ 806 if (us->protocol == US_PR_CBI) { 807 status = usb_stor_CBI_get_status(srb, us); 808 /* if the status is error, report it */ 809 if (status == USB_STOR_TRANSPORT_ERROR) { 810 USB_STOR_PRINTF(" USB CBI Command Error\n"); 811 return status; 812 } 813 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8); 814 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff); 815 if (!us->ip_data) { 816 /* if the status is good, report it */ 817 if (status == USB_STOR_TRANSPORT_GOOD) { 818 USB_STOR_PRINTF(" USB CBI Command Good\n"); 819 return status; 820 } 821 } 822 } 823 /* do we have to issue an auto request? */ 824 /* HERE we have to check the result */ 825 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 826 USB_STOR_PRINTF("ERROR %lX\n", us->pusb_dev->status); 827 us->transport_reset(us); 828 return USB_STOR_TRANSPORT_ERROR; 829 } 830 if ((us->protocol == US_PR_CBI) && 831 ((srb->cmd[0] == SCSI_REQ_SENSE) || 832 (srb->cmd[0] == SCSI_INQUIRY))) { 833 /* do not issue an autorequest after request sense */ 834 USB_STOR_PRINTF("No auto request and good\n"); 835 return USB_STOR_TRANSPORT_GOOD; 836 } 837 /* issue an request_sense */ 838 memset(&psrb->cmd[0], 0, 12); 839 psrb->cmd[0] = SCSI_REQ_SENSE; 840 psrb->cmd[1] = srb->lun << 5; 841 psrb->cmd[4] = 18; 842 psrb->datalen = 18; 843 psrb->pdata = &srb->sense_buf[0]; 844 psrb->cmdlen = 12; 845 /* issue the command */ 846 result = usb_stor_CB_comdat(psrb, us); 847 USB_STOR_PRINTF("auto request returned %d\n", result); 848 /* if this is an CBI Protocol, get IRQ */ 849 if (us->protocol == US_PR_CBI) 850 status = usb_stor_CBI_get_status(psrb, us); 851 852 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) { 853 USB_STOR_PRINTF(" AUTO REQUEST ERROR %ld\n", 854 us->pusb_dev->status); 855 return USB_STOR_TRANSPORT_ERROR; 856 } 857 USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n", 858 srb->sense_buf[0], srb->sense_buf[2], 859 srb->sense_buf[12], srb->sense_buf[13]); 860 /* Check the auto request result */ 861 if ((srb->sense_buf[2] == 0) && 862 (srb->sense_buf[12] == 0) && 863 (srb->sense_buf[13] == 0)) { 864 /* ok, no sense */ 865 return USB_STOR_TRANSPORT_GOOD; 866 } 867 868 /* Check the auto request result */ 869 switch (srb->sense_buf[2]) { 870 case 0x01: 871 /* Recovered Error */ 872 return USB_STOR_TRANSPORT_GOOD; 873 break; 874 case 0x02: 875 /* Not Ready */ 876 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) { 877 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 878 " 0x%02X (NOT READY)\n", srb->cmd[0], 879 srb->sense_buf[0], srb->sense_buf[2], 880 srb->sense_buf[12], srb->sense_buf[13]); 881 return USB_STOR_TRANSPORT_FAILED; 882 } else { 883 mdelay(100); 884 goto do_retry; 885 } 886 break; 887 default: 888 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) { 889 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X" 890 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0], 891 srb->sense_buf[2], srb->sense_buf[12], 892 srb->sense_buf[13]); 893 return USB_STOR_TRANSPORT_FAILED; 894 } else 895 goto do_retry; 896 break; 897 } 898 return USB_STOR_TRANSPORT_FAILED; 899 } 900 901 902 static int usb_inquiry(ccb *srb, struct us_data *ss) 903 { 904 int retry, i; 905 retry = 5; 906 do { 907 memset(&srb->cmd[0], 0, 12); 908 srb->cmd[0] = SCSI_INQUIRY; 909 srb->cmd[1] = srb->lun << 5; 910 srb->cmd[4] = 36; 911 srb->datalen = 36; 912 srb->cmdlen = 12; 913 i = ss->transport(srb, ss); 914 USB_STOR_PRINTF("inquiry returns %d\n", i); 915 if (i == 0) 916 break; 917 } while (--retry); 918 919 if (!retry) { 920 printf("error in inquiry\n"); 921 return -1; 922 } 923 return 0; 924 } 925 926 static int usb_request_sense(ccb *srb, struct us_data *ss) 927 { 928 char *ptr; 929 930 ptr = (char *)srb->pdata; 931 memset(&srb->cmd[0], 0, 12); 932 srb->cmd[0] = SCSI_REQ_SENSE; 933 srb->cmd[1] = srb->lun << 5; 934 srb->cmd[4] = 18; 935 srb->datalen = 18; 936 srb->pdata = &srb->sense_buf[0]; 937 srb->cmdlen = 12; 938 ss->transport(srb, ss); 939 USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n", 940 srb->sense_buf[2], srb->sense_buf[12], 941 srb->sense_buf[13]); 942 srb->pdata = (uchar *)ptr; 943 return 0; 944 } 945 946 static int usb_test_unit_ready(ccb *srb, struct us_data *ss) 947 { 948 int retries = 10; 949 950 do { 951 memset(&srb->cmd[0], 0, 12); 952 srb->cmd[0] = SCSI_TST_U_RDY; 953 srb->cmd[1] = srb->lun << 5; 954 srb->datalen = 0; 955 srb->cmdlen = 12; 956 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 957 return 0; 958 usb_request_sense(srb, ss); 959 mdelay(100); 960 } while (retries--); 961 962 return -1; 963 } 964 965 static int usb_read_capacity(ccb *srb, struct us_data *ss) 966 { 967 int retry; 968 /* XXX retries */ 969 retry = 3; 970 do { 971 memset(&srb->cmd[0], 0, 12); 972 srb->cmd[0] = SCSI_RD_CAPAC; 973 srb->cmd[1] = srb->lun << 5; 974 srb->datalen = 8; 975 srb->cmdlen = 12; 976 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) 977 return 0; 978 } while (retry--); 979 980 return -1; 981 } 982 983 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start, 984 unsigned short blocks) 985 { 986 memset(&srb->cmd[0], 0, 12); 987 srb->cmd[0] = SCSI_READ10; 988 srb->cmd[1] = srb->lun << 5; 989 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 990 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 991 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 992 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 993 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 994 srb->cmd[8] = (unsigned char) blocks & 0xff; 995 srb->cmdlen = 12; 996 USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks); 997 return ss->transport(srb, ss); 998 } 999 1000 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start, 1001 unsigned short blocks) 1002 { 1003 memset(&srb->cmd[0], 0, 12); 1004 srb->cmd[0] = SCSI_WRITE10; 1005 srb->cmd[1] = srb->lun << 5; 1006 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff; 1007 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff; 1008 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff; 1009 srb->cmd[5] = ((unsigned char) (start)) & 0xff; 1010 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff; 1011 srb->cmd[8] = (unsigned char) blocks & 0xff; 1012 srb->cmdlen = 12; 1013 USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks); 1014 return ss->transport(srb, ss); 1015 } 1016 1017 1018 #ifdef CONFIG_USB_BIN_FIXUP 1019 /* 1020 * Some USB storage devices queried for SCSI identification data respond with 1021 * binary strings, which if output to the console freeze the terminal. The 1022 * workaround is to modify the vendor and product strings read from such 1023 * device with proper values (as reported by 'usb info'). 1024 * 1025 * Vendor and product length limits are taken from the definition of 1026 * block_dev_desc_t in include/part.h. 1027 */ 1028 static void usb_bin_fixup(struct usb_device_descriptor descriptor, 1029 unsigned char vendor[], 1030 unsigned char product[]) { 1031 const unsigned char max_vendor_len = 40; 1032 const unsigned char max_product_len = 20; 1033 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) { 1034 strncpy((char *)vendor, "SMSC", max_vendor_len); 1035 strncpy((char *)product, "Flash Media Cntrller", 1036 max_product_len); 1037 } 1038 } 1039 #endif /* CONFIG_USB_BIN_FIXUP */ 1040 1041 unsigned long usb_stor_read(int device, unsigned long blknr, 1042 unsigned long blkcnt, void *buffer) 1043 { 1044 unsigned long start, blks, buf_addr; 1045 unsigned short smallblks; 1046 struct usb_device *dev; 1047 struct us_data *ss; 1048 int retry, i; 1049 ccb *srb = &usb_ccb; 1050 1051 if (blkcnt == 0) 1052 return 0; 1053 1054 device &= 0xff; 1055 /* Setup device */ 1056 USB_STOR_PRINTF("\nusb_read: dev %d \n", device); 1057 dev = NULL; 1058 for (i = 0; i < USB_MAX_DEVICE; i++) { 1059 dev = usb_get_dev_index(i); 1060 if (dev == NULL) 1061 return 0; 1062 if (dev->devnum == usb_dev_desc[device].target) 1063 break; 1064 } 1065 ss = (struct us_data *)dev->privptr; 1066 1067 usb_disable_asynch(1); /* asynch transfer not allowed */ 1068 srb->lun = usb_dev_desc[device].lun; 1069 buf_addr = (unsigned long)buffer; 1070 start = blknr; 1071 blks = blkcnt; 1072 if (usb_test_unit_ready(srb, ss)) { 1073 printf("Device NOT ready\n Request Sense returned %02X %02X" 1074 " %02X\n", srb->sense_buf[2], srb->sense_buf[12], 1075 srb->sense_buf[13]); 1076 return 0; 1077 } 1078 1079 USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx" 1080 " buffer %lx\n", device, start, blks, buf_addr); 1081 1082 do { 1083 /* XXX need some comment here */ 1084 retry = 2; 1085 srb->pdata = (unsigned char *)buf_addr; 1086 if (blks > ss->max_xfer_blk) 1087 smallblks = ss->max_xfer_blk; 1088 else 1089 smallblks = (unsigned short) blks; 1090 retry_it: 1091 if (smallblks == ss->max_xfer_blk) 1092 usb_show_progress(); 1093 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1094 srb->pdata = (unsigned char *)buf_addr; 1095 if (usb_read_10(srb, ss, start, smallblks)) { 1096 USB_STOR_PRINTF("Read ERROR\n"); 1097 usb_request_sense(srb, ss); 1098 if (retry--) 1099 goto retry_it; 1100 blkcnt -= blks; 1101 break; 1102 } 1103 start += smallblks; 1104 blks -= smallblks; 1105 buf_addr += srb->datalen; 1106 } while (blks != 0); 1107 1108 USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n", 1109 start, smallblks, buf_addr); 1110 1111 usb_disable_asynch(0); /* asynch transfer allowed */ 1112 if (blkcnt >= ss->max_xfer_blk) 1113 debug("\n"); 1114 return blkcnt; 1115 } 1116 1117 unsigned long usb_stor_write(int device, unsigned long blknr, 1118 unsigned long blkcnt, const void *buffer) 1119 { 1120 unsigned long start, blks, buf_addr; 1121 unsigned short smallblks; 1122 struct usb_device *dev; 1123 struct us_data *ss; 1124 int retry, i; 1125 ccb *srb = &usb_ccb; 1126 1127 if (blkcnt == 0) 1128 return 0; 1129 1130 device &= 0xff; 1131 /* Setup device */ 1132 USB_STOR_PRINTF("\nusb_write: dev %d \n", device); 1133 dev = NULL; 1134 for (i = 0; i < USB_MAX_DEVICE; i++) { 1135 dev = usb_get_dev_index(i); 1136 if (dev == NULL) 1137 return 0; 1138 if (dev->devnum == usb_dev_desc[device].target) 1139 break; 1140 } 1141 ss = (struct us_data *)dev->privptr; 1142 1143 usb_disable_asynch(1); /* asynch transfer not allowed */ 1144 1145 srb->lun = usb_dev_desc[device].lun; 1146 buf_addr = (unsigned long)buffer; 1147 start = blknr; 1148 blks = blkcnt; 1149 if (usb_test_unit_ready(srb, ss)) { 1150 printf("Device NOT ready\n Request Sense returned %02X %02X" 1151 " %02X\n", srb->sense_buf[2], srb->sense_buf[12], 1152 srb->sense_buf[13]); 1153 return 0; 1154 } 1155 1156 USB_STOR_PRINTF("\nusb_write: dev %d startblk %lx, blccnt %lx" 1157 " buffer %lx\n", device, start, blks, buf_addr); 1158 1159 do { 1160 /* If write fails retry for max retry count else 1161 * return with number of blocks written successfully. 1162 */ 1163 retry = 2; 1164 srb->pdata = (unsigned char *)buf_addr; 1165 if (blks > ss->max_xfer_blk) 1166 smallblks = ss->max_xfer_blk; 1167 else 1168 smallblks = (unsigned short) blks; 1169 retry_it: 1170 if (smallblks == ss->max_xfer_blk) 1171 usb_show_progress(); 1172 srb->datalen = usb_dev_desc[device].blksz * smallblks; 1173 srb->pdata = (unsigned char *)buf_addr; 1174 if (usb_write_10(srb, ss, start, smallblks)) { 1175 USB_STOR_PRINTF("Write ERROR\n"); 1176 usb_request_sense(srb, ss); 1177 if (retry--) 1178 goto retry_it; 1179 blkcnt -= blks; 1180 break; 1181 } 1182 start += smallblks; 1183 blks -= smallblks; 1184 buf_addr += srb->datalen; 1185 } while (blks != 0); 1186 1187 USB_STOR_PRINTF("usb_write: end startblk %lx, blccnt %x buffer %lx\n", 1188 start, smallblks, buf_addr); 1189 1190 usb_disable_asynch(0); /* asynch transfer allowed */ 1191 if (blkcnt >= ss->max_xfer_blk) 1192 debug("\n"); 1193 return blkcnt; 1194 1195 } 1196 1197 /* Probe to see if a new device is actually a Storage device */ 1198 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, 1199 struct us_data *ss) 1200 { 1201 struct usb_interface *iface; 1202 int i; 1203 unsigned int flags = 0; 1204 1205 int protocol = 0; 1206 int subclass = 0; 1207 1208 /* let's examine the device now */ 1209 iface = &dev->config.if_desc[ifnum]; 1210 1211 #if 0 1212 /* this is the place to patch some storage devices */ 1213 USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor, 1214 dev->descriptor.idProduct); 1215 1216 if ((dev->descriptor.idVendor) == 0x066b && 1217 (dev->descriptor.idProduct) == 0x0103) { 1218 USB_STOR_PRINTF("patched for E-USB\n"); 1219 protocol = US_PR_CB; 1220 subclass = US_SC_UFI; /* an assumption */ 1221 } 1222 #endif 1223 1224 if (dev->descriptor.bDeviceClass != 0 || 1225 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || 1226 iface->desc.bInterfaceSubClass < US_SC_MIN || 1227 iface->desc.bInterfaceSubClass > US_SC_MAX) { 1228 /* if it's not a mass storage, we go no further */ 1229 return 0; 1230 } 1231 1232 memset(ss, 0, sizeof(struct us_data)); 1233 1234 /* At this point, we know we've got a live one */ 1235 USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n"); 1236 1237 /* Initialize the us_data structure with some useful info */ 1238 ss->flags = flags; 1239 ss->ifnum = ifnum; 1240 ss->pusb_dev = dev; 1241 ss->attention_done = 0; 1242 1243 /* If the device has subclass and protocol, then use that. Otherwise, 1244 * take data from the specific interface. 1245 */ 1246 if (subclass) { 1247 ss->subclass = subclass; 1248 ss->protocol = protocol; 1249 } else { 1250 ss->subclass = iface->desc.bInterfaceSubClass; 1251 ss->protocol = iface->desc.bInterfaceProtocol; 1252 } 1253 1254 /* set the handler pointers based on the protocol */ 1255 USB_STOR_PRINTF("Transport: "); 1256 switch (ss->protocol) { 1257 case US_PR_CB: 1258 USB_STOR_PRINTF("Control/Bulk\n"); 1259 ss->transport = usb_stor_CB_transport; 1260 ss->transport_reset = usb_stor_CB_reset; 1261 break; 1262 1263 case US_PR_CBI: 1264 USB_STOR_PRINTF("Control/Bulk/Interrupt\n"); 1265 ss->transport = usb_stor_CB_transport; 1266 ss->transport_reset = usb_stor_CB_reset; 1267 break; 1268 case US_PR_BULK: 1269 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n"); 1270 ss->transport = usb_stor_BBB_transport; 1271 ss->transport_reset = usb_stor_BBB_reset; 1272 break; 1273 default: 1274 printf("USB Storage Transport unknown / not yet implemented\n"); 1275 return 0; 1276 break; 1277 } 1278 1279 /* 1280 * We are expecting a minimum of 2 endpoints - in and out (bulk). 1281 * An optional interrupt is OK (necessary for CBI protocol). 1282 * We will ignore any others. 1283 */ 1284 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1285 /* is it an BULK endpoint? */ 1286 if ((iface->ep_desc[i].bmAttributes & 1287 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { 1288 if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN) 1289 ss->ep_in = iface->ep_desc[i].bEndpointAddress & 1290 USB_ENDPOINT_NUMBER_MASK; 1291 else 1292 ss->ep_out = 1293 iface->ep_desc[i].bEndpointAddress & 1294 USB_ENDPOINT_NUMBER_MASK; 1295 } 1296 1297 /* is it an interrupt endpoint? */ 1298 if ((iface->ep_desc[i].bmAttributes & 1299 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { 1300 ss->ep_int = iface->ep_desc[i].bEndpointAddress & 1301 USB_ENDPOINT_NUMBER_MASK; 1302 ss->irqinterval = iface->ep_desc[i].bInterval; 1303 } 1304 } 1305 USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n", 1306 ss->ep_in, ss->ep_out, ss->ep_int); 1307 1308 /* Do some basic sanity checks, and bail if we find a problem */ 1309 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) || 1310 !ss->ep_in || !ss->ep_out || 1311 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) { 1312 USB_STOR_PRINTF("Problems with device\n"); 1313 return 0; 1314 } 1315 /* set class specific stuff */ 1316 /* We only handle certain protocols. Currently, these are 1317 * the only ones. 1318 * The SFF8070 accepts the requests used in u-boot 1319 */ 1320 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI && 1321 ss->subclass != US_SC_8070) { 1322 printf("Sorry, protocol %d not yet supported.\n", ss->subclass); 1323 return 0; 1324 } 1325 if (ss->ep_int) { 1326 /* we had found an interrupt endpoint, prepare irq pipe 1327 * set up the IRQ pipe and handler 1328 */ 1329 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255; 1330 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int); 1331 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe); 1332 dev->irq_handle = usb_stor_irq; 1333 } 1334 dev->privptr = (void *)ss; 1335 return 1; 1336 } 1337 1338 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, 1339 block_dev_desc_t *dev_desc) 1340 { 1341 unsigned char perq, modi; 1342 ALLOC_CACHE_ALIGN_BUFFER(unsigned long, cap, 2); 1343 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, usb_stor_buf, 36); 1344 unsigned long *capacity, *blksz; 1345 ccb *pccb = &usb_ccb; 1346 1347 pccb->pdata = usb_stor_buf; 1348 1349 dev_desc->target = dev->devnum; 1350 pccb->lun = dev_desc->lun; 1351 USB_STOR_PRINTF(" address %d\n", dev_desc->target); 1352 1353 if (usb_inquiry(pccb, ss)) 1354 return -1; 1355 1356 perq = usb_stor_buf[0]; 1357 modi = usb_stor_buf[1]; 1358 1359 if ((perq & 0x1f) == 0x1f) { 1360 /* skip unknown devices */ 1361 return 0; 1362 } 1363 if ((modi&0x80) == 0x80) { 1364 /* drive is removable */ 1365 dev_desc->removable = 1; 1366 } 1367 memcpy(&dev_desc->vendor[0], (const void *) &usb_stor_buf[8], 8); 1368 memcpy(&dev_desc->product[0], (const void *) &usb_stor_buf[16], 16); 1369 memcpy(&dev_desc->revision[0], (const void *) &usb_stor_buf[32], 4); 1370 dev_desc->vendor[8] = 0; 1371 dev_desc->product[16] = 0; 1372 dev_desc->revision[4] = 0; 1373 #ifdef CONFIG_USB_BIN_FIXUP 1374 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, 1375 (uchar *)dev_desc->product); 1376 #endif /* CONFIG_USB_BIN_FIXUP */ 1377 USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2], 1378 usb_stor_buf[3]); 1379 if (usb_test_unit_ready(pccb, ss)) { 1380 printf("Device NOT ready\n" 1381 " Request Sense returned %02X %02X %02X\n", 1382 pccb->sense_buf[2], pccb->sense_buf[12], 1383 pccb->sense_buf[13]); 1384 if (dev_desc->removable == 1) { 1385 dev_desc->type = perq; 1386 return 1; 1387 } 1388 return 0; 1389 } 1390 pccb->pdata = (unsigned char *)&cap[0]; 1391 memset(pccb->pdata, 0, 8); 1392 if (usb_read_capacity(pccb, ss) != 0) { 1393 printf("READ_CAP ERROR\n"); 1394 cap[0] = 2880; 1395 cap[1] = 0x200; 1396 } 1397 USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0], 1398 cap[1]); 1399 #if 0 1400 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ 1401 cap[0] >>= 16; 1402 #endif 1403 cap[0] = cpu_to_be32(cap[0]); 1404 cap[1] = cpu_to_be32(cap[1]); 1405 1406 /* this assumes bigendian! */ 1407 cap[0] += 1; 1408 capacity = &cap[0]; 1409 blksz = &cap[1]; 1410 USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n", 1411 *capacity, *blksz); 1412 dev_desc->lba = *capacity; 1413 dev_desc->blksz = *blksz; 1414 dev_desc->type = perq; 1415 USB_STOR_PRINTF(" address %d\n", dev_desc->target); 1416 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); 1417 1418 /* 1419 * The U-Boot EHCI driver cannot handle more than 4096 * 5 bytes in a 1420 * transfer without running itself out of qt_buffers. 1421 */ 1422 ss->max_xfer_blk = (4096 * 5) / dev_desc->blksz; 1423 1424 init_part(dev_desc); 1425 1426 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); 1427 return 1; 1428 } 1429