1 /* 2 * 3 * Most of this source has been derived from the Linux USB 4 * project: 5 * (C) Copyright Linus Torvalds 1999 6 * (C) Copyright Johannes Erdfelt 1999-2001 7 * (C) Copyright Andreas Gal 1999 8 * (C) Copyright Gregory P. Smith 1999 9 * (C) Copyright Deti Fliegl 1999 (new USB architecture) 10 * (C) Copyright Randy Dunlap 2000 11 * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id) 12 * (C) Copyright Yggdrasil Computing, Inc. 2000 13 * (usb_device_id matching changes by Adam J. Richter) 14 * 15 * Adapted for U-Boot: 16 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland 17 * 18 * See file CREDITS for list of people who contributed to this 19 * project. 20 * 21 * This program is free software; you can redistribute it and/or 22 * modify it under the terms of the GNU General Public License as 23 * published by the Free Software Foundation; either version 2 of 24 * the License, or (at your option) any later version. 25 * 26 * This program is distributed in the hope that it will be useful, 27 * but WITHOUT ANY WARRANTY; without even the implied warranty of 28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 29 * GNU General Public License for more details. 30 * 31 * You should have received a copy of the GNU General Public License 32 * along with this program; if not, write to the Free Software 33 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 34 * MA 02111-1307 USA 35 * 36 */ 37 38 /* 39 * How it works: 40 * 41 * Since this is a bootloader, the devices will not be automatic 42 * (re)configured on hotplug, but after a restart of the USB the 43 * device should work. 44 * 45 * For each transfer (except "Interrupt") we wait for completion. 46 */ 47 #include <common.h> 48 #include <command.h> 49 #include <asm/processor.h> 50 #include <linux/ctype.h> 51 52 #if (CONFIG_COMMANDS & CFG_CMD_USB) 53 54 #include <usb.h> 55 #ifdef CONFIG_4xx 56 #include <405gp_pci.h> 57 #endif 58 59 #undef USB_DEBUG 60 61 #ifdef USB_DEBUG 62 #define USB_PRINTF(fmt,args...) printf (fmt ,##args) 63 #else 64 #define USB_PRINTF(fmt,args...) 65 #endif 66 67 #define USB_BUFSIZ 512 68 69 static struct usb_device usb_dev[USB_MAX_DEVICE]; 70 static int dev_index; 71 static int running; 72 static int asynch_allowed; 73 static struct devrequest setup_packet; 74 75 char usb_started; /* flag for the started/stopped USB status */ 76 77 /********************************************************************** 78 * some forward declerations... 79 */ 80 void usb_scan_devices(void); 81 82 int usb_hub_probe(struct usb_device *dev, int ifnum); 83 void usb_hub_reset(void); 84 85 86 /*********************************************************************** 87 * wait_ms 88 */ 89 90 void __inline__ wait_ms(unsigned long ms) 91 { 92 while(ms-->0) 93 udelay(1000); 94 } 95 /*************************************************************************** 96 * Init USB Device 97 */ 98 99 int usb_init(void) 100 { 101 int result; 102 103 running=0; 104 dev_index=0; 105 asynch_allowed=1; 106 usb_hub_reset(); 107 /* init low_level USB */ 108 printf("USB: "); 109 result = usb_lowlevel_init(); 110 /* if lowlevel init is OK, scan the bus for devices i.e. search HUBs and configure them */ 111 if(result==0) { 112 printf("scanning bus for devices... "); 113 running=1; 114 usb_scan_devices(); 115 usb_started = 1; 116 return 0; 117 } 118 else { 119 printf("Error, couldn't init Lowlevel part\n"); 120 usb_started = 0; 121 return -1; 122 } 123 } 124 125 /****************************************************************************** 126 * Stop USB this stops the LowLevel Part and deregisters USB devices. 127 */ 128 int usb_stop(void) 129 { 130 asynch_allowed=1; 131 usb_started = 0; 132 usb_hub_reset(); 133 return usb_lowlevel_stop(); 134 } 135 136 /* 137 * disables the asynch behaviour of the control message. This is used for data 138 * transfers that uses the exclusiv access to the control and bulk messages. 139 */ 140 void usb_disable_asynch(int disable) 141 { 142 asynch_allowed=!disable; 143 } 144 145 146 /*------------------------------------------------------------------- 147 * Message wrappers. 148 * 149 */ 150 151 /* 152 * submits an Interrupt Message 153 */ 154 int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe, 155 void *buffer,int transfer_len, int interval) 156 { 157 return submit_int_msg(dev,pipe,buffer,transfer_len,interval); 158 } 159 160 /* 161 * submits a control message and waits for comletion (at least timeout * 1ms) 162 * If timeout is 0, we don't wait for completion (used as example to set and 163 * clear keyboards LEDs). For data transfers, (storage transfers) we don't 164 * allow control messages with 0 timeout, by previousely resetting the flag 165 * asynch_allowed (usb_disable_asynch(1)). 166 * returns the transfered length if OK or -1 if error. The transfered length 167 * and the current status are stored in the dev->act_len and dev->status. 168 */ 169 int usb_control_msg(struct usb_device *dev, unsigned int pipe, 170 unsigned char request, unsigned char requesttype, 171 unsigned short value, unsigned short index, 172 void *data, unsigned short size, int timeout) 173 { 174 if((timeout==0)&&(!asynch_allowed)) /* request for a asynch control pipe is not allowed */ 175 return -1; 176 177 /* set setup command */ 178 setup_packet.requesttype = requesttype; 179 setup_packet.request = request; 180 setup_packet.value = swap_16(value); 181 setup_packet.index = swap_16(index); 182 setup_packet.length = swap_16(size); 183 USB_PRINTF("usb_control_msg: request: 0x%X, requesttype: 0x%X\nvalue 0x%X index 0x%X length 0x%X\n", 184 request,requesttype,value,index,size); 185 dev->status=USB_ST_NOT_PROC; /*not yet processed */ 186 187 submit_control_msg(dev,pipe,data,size,&setup_packet); 188 if(timeout==0) { 189 return (int)size; 190 } 191 while(timeout--) { 192 if(!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) 193 break; 194 wait_ms(1); 195 } 196 if(dev->status==0) 197 return dev->act_len; 198 else { 199 return -1; 200 } 201 } 202 203 /*------------------------------------------------------------------- 204 * submits bulk message, and waits for completion. returns 0 if Ok or 205 * -1 if Error. 206 * synchronous behavior 207 */ 208 int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, 209 void *data, int len, int *actual_length, int timeout) 210 { 211 if (len < 0) 212 return -1; 213 dev->status=USB_ST_NOT_PROC; /*not yet processed */ 214 submit_bulk_msg(dev,pipe,data,len); 215 while(timeout--) { 216 if(!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) 217 break; 218 wait_ms(1); 219 } 220 *actual_length=dev->act_len; 221 if(dev->status==0) 222 return 0; 223 else 224 return -1; 225 } 226 227 228 /*------------------------------------------------------------------- 229 * Max Packet stuff 230 */ 231 232 /* 233 * returns the max packet size, depending on the pipe direction and 234 * the configurations values 235 */ 236 int usb_maxpacket(struct usb_device *dev,unsigned long pipe) 237 { 238 if((pipe & USB_DIR_IN)==0) /* direction is out -> use emaxpacket out */ 239 return(dev->epmaxpacketout[((pipe>>15) & 0xf)]); 240 else 241 return(dev->epmaxpacketin[((pipe>>15) & 0xf)]); 242 } 243 244 /* 245 * set the max packed value of all endpoints in the given configuration 246 */ 247 int usb_set_maxpacket(struct usb_device *dev) 248 { 249 int i,ii,b; 250 struct usb_endpoint_descriptor *ep; 251 252 for(i=0; i<dev->config.bNumInterfaces;i++) { 253 for(ii=0; ii<dev->config.if_desc[i].bNumEndpoints; ii++) { 254 ep=&dev->config.if_desc[i].ep_desc[ii]; 255 b=ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; 256 257 if((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)==USB_ENDPOINT_XFER_CONTROL) { /* Control => bidirectional */ 258 dev->epmaxpacketout[b] = ep->wMaxPacketSize; 259 dev->epmaxpacketin [b] = ep->wMaxPacketSize; 260 USB_PRINTF("##Control EP epmaxpacketout/in[%d] = %d\n",b,dev->epmaxpacketin[b]); 261 } 262 else { 263 if ((ep->bEndpointAddress & 0x80)==0) { /* OUT Endpoint */ 264 if(ep->wMaxPacketSize > dev->epmaxpacketout[b]) { 265 dev->epmaxpacketout[b] = ep->wMaxPacketSize; 266 USB_PRINTF("##EP epmaxpacketout[%d] = %d\n",b,dev->epmaxpacketout[b]); 267 } 268 } 269 else { /* IN Endpoint */ 270 if(ep->wMaxPacketSize > dev->epmaxpacketin[b]) { 271 dev->epmaxpacketin[b] = ep->wMaxPacketSize; 272 USB_PRINTF("##EP epmaxpacketin[%d] = %d\n",b,dev->epmaxpacketin[b]); 273 } 274 } /* if out */ 275 } /* if control */ 276 } /* for each endpoint */ 277 } 278 return 0; 279 } 280 281 /******************************************************************************* 282 * Parse the config, located in buffer, and fills the dev->config structure. 283 * Note that all little/big endian swapping are done automatically. 284 */ 285 int usb_parse_config(struct usb_device *dev, unsigned char *buffer, int cfgno) 286 { 287 struct usb_descriptor_header *head; 288 int index, ifno, epno, curr_if_num; 289 int i; 290 unsigned char *ch; 291 292 ifno = -1; 293 epno = -1; 294 curr_if_num = -1; 295 296 dev->configno = cfgno; 297 head = (struct usb_descriptor_header *) &buffer[0]; 298 if(head->bDescriptorType != USB_DT_CONFIG) { 299 printf(" ERROR: NOT USB_CONFIG_DESC %x\n", head->bDescriptorType); 300 return -1; 301 } 302 memcpy(&dev->config, buffer, buffer[0]); 303 dev->config.wTotalLength = swap_16(dev->config.wTotalLength); 304 dev->config.no_of_if = 0; 305 306 index = dev->config.bLength; 307 /* Ok the first entry must be a configuration entry, now process the others */ 308 head = (struct usb_descriptor_header *) &buffer[index]; 309 while(index + 1 < dev->config.wTotalLength) { 310 switch(head->bDescriptorType) { 311 case USB_DT_INTERFACE: 312 if(((struct usb_interface_descriptor *) &buffer[index])-> 313 bInterfaceNumber != curr_if_num) { 314 /* this is a new interface, copy new desc */ 315 ifno = dev->config.no_of_if; 316 dev->config.no_of_if++; 317 memcpy(&dev->config.if_desc[ifno], 318 &buffer[index], buffer[index]); 319 dev->config.if_desc[ifno].no_of_ep = 0; 320 dev->config.if_desc[ifno].num_altsetting = 1; 321 curr_if_num = dev->config.if_desc[ifno].bInterfaceNumber; 322 } else { 323 /* found alternate setting for the interface */ 324 dev->config.if_desc[ifno].num_altsetting++; 325 } 326 break; 327 case USB_DT_ENDPOINT: 328 epno = dev->config.if_desc[ifno].no_of_ep; 329 dev->config.if_desc[ifno].no_of_ep++; /* found an endpoint */ 330 memcpy(&dev->config.if_desc[ifno].ep_desc[epno], 331 &buffer[index], buffer[index]); 332 dev->config.if_desc[ifno].ep_desc[epno].wMaxPacketSize = 333 swap_16(dev->config.if_desc[ifno].ep_desc[epno].wMaxPacketSize); 334 USB_PRINTF("if %d, ep %d\n", ifno, epno); 335 break; 336 default: 337 if(head->bLength == 0) 338 return 1; 339 USB_PRINTF("unknown Description Type : %x\n", head->bDescriptorType); 340 { 341 ch = (unsigned char *)head; 342 for(i = 0; i < head->bLength; i++) 343 USB_PRINTF("%02X ", *ch++); 344 USB_PRINTF("\n\n\n"); 345 } 346 break; 347 } 348 index += head->bLength; 349 head = (struct usb_descriptor_header *)&buffer[index]; 350 } 351 return 1; 352 } 353 354 /*********************************************************************** 355 * Clears an endpoint 356 * endp: endpoint number in bits 0-3; 357 * direction flag in bit 7 (1 = IN, 0 = OUT) 358 */ 359 int usb_clear_halt(struct usb_device *dev, int pipe) 360 { 361 int result; 362 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7); 363 364 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 365 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, endp, NULL, 0, USB_CNTL_TIMEOUT * 3); 366 367 /* don't clear if failed */ 368 if (result < 0) 369 return result; 370 371 /* 372 * NOTE: we do not get status and verify reset was successful 373 * as some devices are reported to lock up upon this check.. 374 */ 375 376 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)); 377 378 /* toggle is reset on clear */ 379 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0); 380 return 0; 381 } 382 383 384 /********************************************************************** 385 * get_descriptor type 386 */ 387 int usb_get_descriptor(struct usb_device *dev, unsigned char type, unsigned char index, void *buf, int size) 388 { 389 int res; 390 res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 391 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, 392 (type << 8) + index, 0, 393 buf, size, USB_CNTL_TIMEOUT); 394 return res; 395 } 396 397 /********************************************************************** 398 * gets configuration cfgno and store it in the buffer 399 */ 400 int usb_get_configuration_no(struct usb_device *dev,unsigned char *buffer,int cfgno) 401 { 402 int result; 403 unsigned int tmp; 404 struct usb_config_descriptor *config; 405 406 407 config=(struct usb_config_descriptor *)&buffer[0]; 408 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 8); 409 if (result < 8) { 410 if (result < 0) 411 printf("unable to get descriptor, error %lX\n",dev->status); 412 else 413 printf("config descriptor too short (expected %i, got %i)\n",8,result); 414 return -1; 415 } 416 tmp=swap_16(config->wTotalLength); 417 418 if (tmp > USB_BUFSIZ) { 419 USB_PRINTF("usb_get_configuration_no: failed to get descriptor - too long: %d\n", 420 tmp); 421 return -1; 422 } 423 424 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp); 425 USB_PRINTF("get_conf_no %d Result %d, wLength %d\n",cfgno,result,tmp); 426 return result; 427 } 428 429 /******************************************************************** 430 * set address of a device to the value in dev->devnum. 431 * This can only be done by addressing the device via the default address (0) 432 */ 433 int usb_set_address(struct usb_device *dev) 434 { 435 int res; 436 437 USB_PRINTF("set address %d\n",dev->devnum); 438 res=usb_control_msg(dev, usb_snddefctrl(dev), 439 USB_REQ_SET_ADDRESS, 0, 440 (dev->devnum),0, 441 NULL,0, USB_CNTL_TIMEOUT); 442 return res; 443 } 444 445 /******************************************************************** 446 * set interface number to interface 447 */ 448 int usb_set_interface(struct usb_device *dev, int interface, int alternate) 449 { 450 struct usb_interface_descriptor *if_face = NULL; 451 int ret, i; 452 453 for (i = 0; i < dev->config.bNumInterfaces; i++) { 454 if (dev->config.if_desc[i].bInterfaceNumber == interface) { 455 if_face = &dev->config.if_desc[i]; 456 break; 457 } 458 } 459 if (!if_face) { 460 printf("selecting invalid interface %d", interface); 461 return -1; 462 } 463 /* 464 * We should return now for devices with only one alternate setting. 465 * According to 9.4.10 of the Universal Serial Bus Specification Revision 2.0 466 * such devices can return with a STALL. This results in some USB sticks 467 * timeouting during initialization and then being unusable in U-Boot. 468 */ 469 if (if_face->num_altsetting == 1) 470 return 0; 471 472 if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 473 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE, alternate, 474 interface, NULL, 0, USB_CNTL_TIMEOUT * 5)) < 0) 475 return ret; 476 477 return 0; 478 } 479 480 /******************************************************************** 481 * set configuration number to configuration 482 */ 483 int usb_set_configuration(struct usb_device *dev, int configuration) 484 { 485 int res; 486 USB_PRINTF("set configuration %d\n",configuration); 487 /* set setup command */ 488 res=usb_control_msg(dev, usb_sndctrlpipe(dev,0), 489 USB_REQ_SET_CONFIGURATION, 0, 490 configuration,0, 491 NULL,0, USB_CNTL_TIMEOUT); 492 if(res==0) { 493 dev->toggle[0] = 0; 494 dev->toggle[1] = 0; 495 return 0; 496 } 497 else 498 return -1; 499 } 500 501 /******************************************************************** 502 * set protocol to protocol 503 */ 504 int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol) 505 { 506 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 507 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 508 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT); 509 } 510 511 /******************************************************************** 512 * set idle 513 */ 514 int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id) 515 { 516 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 517 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 518 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT); 519 } 520 521 /******************************************************************** 522 * get report 523 */ 524 int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type, unsigned char id, void *buf, int size) 525 { 526 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 527 USB_REQ_GET_REPORT, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 528 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT); 529 } 530 531 /******************************************************************** 532 * get class descriptor 533 */ 534 int usb_get_class_descriptor(struct usb_device *dev, int ifnum, 535 unsigned char type, unsigned char id, void *buf, int size) 536 { 537 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 538 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, 539 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT); 540 } 541 542 /******************************************************************** 543 * get string index in buffer 544 */ 545 int usb_get_string(struct usb_device *dev, unsigned short langid, unsigned char index, void *buf, int size) 546 { 547 int i; 548 int result; 549 550 for (i = 0; i < 3; ++i) { 551 /* some devices are flaky */ 552 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 553 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, 554 (USB_DT_STRING << 8) + index, langid, buf, size, 555 USB_CNTL_TIMEOUT); 556 557 if (result > 0) 558 break; 559 } 560 561 return result; 562 } 563 564 565 static void usb_try_string_workarounds(unsigned char *buf, int *length) 566 { 567 int newlength, oldlength = *length; 568 569 for (newlength = 2; newlength + 1 < oldlength; newlength += 2) 570 if (!isprint(buf[newlength]) || buf[newlength + 1]) 571 break; 572 573 if (newlength > 2) { 574 buf[0] = newlength; 575 *length = newlength; 576 } 577 } 578 579 580 static int usb_string_sub(struct usb_device *dev, unsigned int langid, 581 unsigned int index, unsigned char *buf) 582 { 583 int rc; 584 585 /* Try to read the string descriptor by asking for the maximum 586 * possible number of bytes */ 587 rc = usb_get_string(dev, langid, index, buf, 255); 588 589 /* If that failed try to read the descriptor length, then 590 * ask for just that many bytes */ 591 if (rc < 2) { 592 rc = usb_get_string(dev, langid, index, buf, 2); 593 if (rc == 2) 594 rc = usb_get_string(dev, langid, index, buf, buf[0]); 595 } 596 597 if (rc >= 2) { 598 if (!buf[0] && !buf[1]) 599 usb_try_string_workarounds(buf, &rc); 600 601 /* There might be extra junk at the end of the descriptor */ 602 if (buf[0] < rc) 603 rc = buf[0]; 604 605 rc = rc - (rc & 1); /* force a multiple of two */ 606 } 607 608 if (rc < 2) 609 rc = -1; 610 611 return rc; 612 } 613 614 615 /******************************************************************** 616 * usb_string: 617 * Get string index and translate it to ascii. 618 * returns string length (> 0) or error (< 0) 619 */ 620 int usb_string(struct usb_device *dev, int index, char *buf, size_t size) 621 { 622 unsigned char mybuf[USB_BUFSIZ]; 623 unsigned char *tbuf; 624 int err; 625 unsigned int u, idx; 626 627 if (size <= 0 || !buf || !index) 628 return -1; 629 buf[0] = 0; 630 tbuf=&mybuf[0]; 631 632 /* get langid for strings if it's not yet known */ 633 if (!dev->have_langid) { 634 err = usb_string_sub(dev, 0, 0, tbuf); 635 if (err < 0) { 636 USB_PRINTF("error getting string descriptor 0 (error=%x)\n",dev->status); 637 return -1; 638 } else if (tbuf[0] < 4) { 639 USB_PRINTF("string descriptor 0 too short\n"); 640 return -1; 641 } else { 642 dev->have_langid = -1; 643 dev->string_langid = tbuf[2] | (tbuf[3]<< 8); 644 /* always use the first langid listed */ 645 USB_PRINTF("USB device number %d default language ID 0x%x\n", 646 dev->devnum, dev->string_langid); 647 } 648 } 649 650 err = usb_string_sub(dev, dev->string_langid, index, tbuf); 651 if (err < 0) 652 return err; 653 654 size--; /* leave room for trailing NULL char in output buffer */ 655 for (idx = 0, u = 2; u < err; u += 2) { 656 if (idx >= size) 657 break; 658 if (tbuf[u+1]) /* high byte */ 659 buf[idx++] = '?'; /* non-ASCII character */ 660 else 661 buf[idx++] = tbuf[u]; 662 } 663 buf[idx] = 0; 664 err = idx; 665 return err; 666 } 667 668 669 /******************************************************************** 670 * USB device handling: 671 * the USB device are static allocated [USB_MAX_DEVICE]. 672 */ 673 674 675 /* returns a pointer to the device with the index [index]. 676 * if the device is not assigned (dev->devnum==-1) returns NULL 677 */ 678 struct usb_device * usb_get_dev_index(int index) 679 { 680 if(usb_dev[index].devnum==-1) 681 return NULL; 682 else 683 return &usb_dev[index]; 684 } 685 686 687 /* returns a pointer of a new device structure or NULL, if 688 * no device struct is available 689 */ 690 struct usb_device * usb_alloc_new_device(void) 691 { 692 int i; 693 USB_PRINTF("New Device %d\n",dev_index); 694 if(dev_index==USB_MAX_DEVICE) { 695 printf("ERROR, too many USB Devices, max=%d\n",USB_MAX_DEVICE); 696 return NULL; 697 } 698 usb_dev[dev_index].devnum=dev_index+1; /* default Address is 0, real addresses start with 1 */ 699 usb_dev[dev_index].maxchild=0; 700 for(i=0;i<USB_MAXCHILDREN;i++) 701 usb_dev[dev_index].children[i]=NULL; 702 usb_dev[dev_index].parent=NULL; 703 dev_index++; 704 return &usb_dev[dev_index-1]; 705 } 706 707 708 /* 709 * By the time we get here, the device has gotten a new device ID 710 * and is in the default state. We need to identify the thing and 711 * get the ball rolling.. 712 * 713 * Returns 0 for success, != 0 for error. 714 */ 715 int usb_new_device(struct usb_device *dev) 716 { 717 int addr, err; 718 int tmp; 719 unsigned char tmpbuf[USB_BUFSIZ]; 720 721 dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */ 722 dev->maxpacketsize = 0; /* Default to 8 byte max packet size */ 723 dev->epmaxpacketin [0] = 8; 724 dev->epmaxpacketout[0] = 8; 725 726 /* We still haven't set the Address yet */ 727 addr = dev->devnum; 728 dev->devnum = 0; 729 730 #undef NEW_INIT_SEQ 731 #ifdef NEW_INIT_SEQ 732 /* this is a Windows scheme of initialization sequence, with double 733 * reset of the device. Some equipment is said to work only with such 734 * init sequence; this patch is based on the work by Alan Stern: 735 * http://sourceforge.net/mailarchive/forum.php?thread_id=5729457&forum_id=5398 736 */ 737 int j; 738 struct usb_device_descriptor *desc; 739 int port = -1; 740 struct usb_device *parent = dev->parent; 741 unsigned short portstatus; 742 743 /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is 744 * only 18 bytes long, this will terminate with a short packet. But if 745 * the maxpacket size is 8 or 16 the device may be waiting to transmit 746 * some more. */ 747 748 desc = (struct usb_device_descriptor *)tmpbuf; 749 desc->bMaxPacketSize0 = 0; 750 for (j = 0; j < 3; ++j) { 751 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64); 752 if (err < 0) { 753 USB_PRINTF("usb_new_device: 64 byte descr\n"); 754 break; 755 } 756 } 757 dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0; 758 759 /* find the port number we're at */ 760 if (parent) { 761 762 for (j = 0; j < parent->maxchild; j++) { 763 if (parent->children[j] == dev) { 764 port = j; 765 break; 766 } 767 } 768 if (port < 0) { 769 printf("usb_new_device: cannot locate device's port..\n"); 770 return 1; 771 } 772 773 /* reset the port for the second time */ 774 err = hub_port_reset(dev->parent, port, &portstatus); 775 if (err < 0) { 776 printf("\n Couldn't reset port %i\n", port); 777 return 1; 778 } 779 } 780 #else 781 /* and this is the old and known way of initializing devices */ 782 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, 8); 783 if (err < 8) { 784 printf("\n USB device not responding, giving up (status=%lX)\n",dev->status); 785 return 1; 786 } 787 #endif 788 789 dev->epmaxpacketin [0] = dev->descriptor.bMaxPacketSize0; 790 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0; 791 switch (dev->descriptor.bMaxPacketSize0) { 792 case 8: dev->maxpacketsize = 0; break; 793 case 16: dev->maxpacketsize = 1; break; 794 case 32: dev->maxpacketsize = 2; break; 795 case 64: dev->maxpacketsize = 3; break; 796 } 797 dev->devnum = addr; 798 799 err = usb_set_address(dev); /* set address */ 800 801 if (err < 0) { 802 printf("\n USB device not accepting new address (error=%lX)\n", dev->status); 803 return 1; 804 } 805 806 wait_ms(10); /* Let the SET_ADDRESS settle */ 807 808 tmp = sizeof(dev->descriptor); 809 810 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, sizeof(dev->descriptor)); 811 if (err < tmp) { 812 if (err < 0) 813 printf("unable to get device descriptor (error=%d)\n",err); 814 else 815 printf("USB device descriptor short read (expected %i, got %i)\n",tmp,err); 816 return 1; 817 } 818 /* correct le values */ 819 dev->descriptor.bcdUSB=swap_16(dev->descriptor.bcdUSB); 820 dev->descriptor.idVendor=swap_16(dev->descriptor.idVendor); 821 dev->descriptor.idProduct=swap_16(dev->descriptor.idProduct); 822 dev->descriptor.bcdDevice=swap_16(dev->descriptor.bcdDevice); 823 /* only support for one config for now */ 824 usb_get_configuration_no(dev,&tmpbuf[0],0); 825 usb_parse_config(dev,&tmpbuf[0],0); 826 usb_set_maxpacket(dev); 827 /* we set the default configuration here */ 828 if (usb_set_configuration(dev, dev->config.bConfigurationValue)) { 829 printf("failed to set default configuration len %d, status %lX\n",dev->act_len,dev->status); 830 return -1; 831 } 832 USB_PRINTF("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n", 833 dev->descriptor.iManufacturer, dev->descriptor.iProduct, dev->descriptor.iSerialNumber); 834 memset(dev->mf, 0, sizeof(dev->mf)); 835 memset(dev->prod, 0, sizeof(dev->prod)); 836 memset(dev->serial, 0, sizeof(dev->serial)); 837 if (dev->descriptor.iManufacturer) 838 usb_string(dev, dev->descriptor.iManufacturer, dev->mf, sizeof(dev->mf)); 839 if (dev->descriptor.iProduct) 840 usb_string(dev, dev->descriptor.iProduct, dev->prod, sizeof(dev->prod)); 841 if (dev->descriptor.iSerialNumber) 842 usb_string(dev, dev->descriptor.iSerialNumber, dev->serial, sizeof(dev->serial)); 843 USB_PRINTF("Manufacturer %s\n", dev->mf); 844 USB_PRINTF("Product %s\n", dev->prod); 845 USB_PRINTF("SerialNumber %s\n", dev->serial); 846 /* now prode if the device is a hub */ 847 usb_hub_probe(dev,0); 848 return 0; 849 } 850 851 /* build device Tree */ 852 void usb_scan_devices(void) 853 { 854 int i; 855 struct usb_device *dev; 856 857 /* first make all devices unknown */ 858 for(i=0;i<USB_MAX_DEVICE;i++) { 859 memset(&usb_dev[i],0,sizeof(struct usb_device)); 860 usb_dev[i].devnum=-1; 861 } 862 dev_index=0; 863 /* device 0 is always present (root hub, so let it analyze) */ 864 dev=usb_alloc_new_device(); 865 usb_new_device(dev); 866 printf("%d USB Device(s) found\n",dev_index); 867 /* insert "driver" if possible */ 868 #ifdef CONFIG_USB_KEYBOARD 869 drv_usb_kbd_init(); 870 USB_PRINTF("scan end\n"); 871 #endif 872 } 873 874 875 /**************************************************************************** 876 * HUB "Driver" 877 * Probes device for being a hub and configurate it 878 */ 879 880 #undef USB_HUB_DEBUG 881 882 #ifdef USB_HUB_DEBUG 883 #define USB_HUB_PRINTF(fmt,args...) printf (fmt ,##args) 884 #else 885 #define USB_HUB_PRINTF(fmt,args...) 886 #endif 887 888 889 static struct usb_hub_device hub_dev[USB_MAX_HUB]; 890 static int usb_hub_index; 891 892 893 int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size) 894 { 895 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 896 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB, 897 USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT); 898 } 899 900 int usb_clear_hub_feature(struct usb_device *dev, int feature) 901 { 902 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 903 USB_REQ_CLEAR_FEATURE, USB_RT_HUB, feature, 0, NULL, 0, USB_CNTL_TIMEOUT); 904 } 905 906 int usb_clear_port_feature(struct usb_device *dev, int port, int feature) 907 { 908 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 909 USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, port, NULL, 0, USB_CNTL_TIMEOUT); 910 } 911 912 int usb_set_port_feature(struct usb_device *dev, int port, int feature) 913 { 914 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 915 USB_REQ_SET_FEATURE, USB_RT_PORT, feature, port, NULL, 0, USB_CNTL_TIMEOUT); 916 } 917 918 int usb_get_hub_status(struct usb_device *dev, void *data) 919 { 920 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 921 USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0, 922 data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); 923 } 924 925 int usb_get_port_status(struct usb_device *dev, int port, void *data) 926 { 927 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 928 USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port, 929 data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); 930 } 931 932 933 static void usb_hub_power_on(struct usb_hub_device *hub) 934 { 935 int i; 936 struct usb_device *dev; 937 938 dev=hub->pusb_dev; 939 /* Enable power to the ports */ 940 USB_HUB_PRINTF("enabling power on all ports\n"); 941 for (i = 0; i < dev->maxchild; i++) { 942 usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER); 943 USB_HUB_PRINTF("port %d returns %lX\n",i+1,dev->status); 944 wait_ms(hub->desc.bPwrOn2PwrGood * 2); 945 } 946 } 947 948 void usb_hub_reset(void) 949 { 950 usb_hub_index=0; 951 } 952 953 struct usb_hub_device *usb_hub_allocate(void) 954 { 955 if(usb_hub_index<USB_MAX_HUB) { 956 return &hub_dev[usb_hub_index++]; 957 } 958 printf("ERROR: USB_MAX_HUB (%d) reached\n",USB_MAX_HUB); 959 return NULL; 960 } 961 962 #define MAX_TRIES 5 963 964 static int hub_port_reset(struct usb_device *dev, int port, 965 unsigned short *portstat) 966 { 967 int tries; 968 struct usb_port_status portsts; 969 unsigned short portstatus, portchange; 970 971 972 USB_HUB_PRINTF("hub_port_reset: resetting port %d...\n", port); 973 for(tries=0;tries<MAX_TRIES;tries++) { 974 975 usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET); 976 wait_ms(200); 977 978 if (usb_get_port_status(dev, port + 1, &portsts)<0) { 979 USB_HUB_PRINTF("get_port_status failed status %lX\n",dev->status); 980 return -1; 981 } 982 portstatus = swap_16(portsts.wPortStatus); 983 portchange = swap_16(portsts.wPortChange); 984 USB_HUB_PRINTF("portstatus %x, change %x, %s\n", portstatus ,portchange, 985 portstatus&(1<<USB_PORT_FEAT_LOWSPEED) ? "Low Speed" : "High Speed"); 986 USB_HUB_PRINTF("STAT_C_CONNECTION = %d STAT_CONNECTION = %d USB_PORT_STAT_ENABLE %d\n", 987 (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0, 988 (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0, 989 (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0); 990 if ((portchange & USB_PORT_STAT_C_CONNECTION) || 991 !(portstatus & USB_PORT_STAT_CONNECTION)) 992 return -1; 993 994 if (portstatus & USB_PORT_STAT_ENABLE) { 995 996 break; 997 } 998 999 wait_ms(200); 1000 } 1001 1002 if (tries==MAX_TRIES) { 1003 USB_HUB_PRINTF("Cannot enable port %i after %i retries, disabling port.\n", port+1, MAX_TRIES); 1004 USB_HUB_PRINTF("Maybe the USB cable is bad?\n"); 1005 return -1; 1006 } 1007 1008 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET); 1009 *portstat = portstatus; 1010 return 0; 1011 1012 } 1013 1014 1015 void usb_hub_port_connect_change(struct usb_device *dev, int port) 1016 { 1017 struct usb_device *usb; 1018 struct usb_port_status portsts; 1019 unsigned short portstatus, portchange; 1020 1021 /* Check status */ 1022 if (usb_get_port_status(dev, port + 1, &portsts)<0) { 1023 USB_HUB_PRINTF("get_port_status failed\n"); 1024 return; 1025 } 1026 1027 portstatus = swap_16(portsts.wPortStatus); 1028 portchange = swap_16(portsts.wPortChange); 1029 USB_HUB_PRINTF("portstatus %x, change %x, %s\n", portstatus, portchange, 1030 portstatus&(1<<USB_PORT_FEAT_LOWSPEED) ? "Low Speed" : "High Speed"); 1031 1032 /* Clear the connection change status */ 1033 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION); 1034 1035 /* Disconnect any existing devices under this port */ 1036 if (((!(portstatus & USB_PORT_STAT_CONNECTION)) && 1037 (!(portstatus & USB_PORT_STAT_ENABLE)))|| (dev->children[port])) { 1038 USB_HUB_PRINTF("usb_disconnect(&hub->children[port]);\n"); 1039 /* Return now if nothing is connected */ 1040 if (!(portstatus & USB_PORT_STAT_CONNECTION)) 1041 return; 1042 } 1043 wait_ms(200); 1044 1045 /* Reset the port */ 1046 if (hub_port_reset(dev, port, &portstatus) < 0) { 1047 printf("cannot reset port %i!?\n", port + 1); 1048 return; 1049 } 1050 1051 wait_ms(200); 1052 1053 /* Allocate a new device struct for it */ 1054 usb=usb_alloc_new_device(); 1055 usb->slow = (portstatus & USB_PORT_STAT_LOW_SPEED) ? 1 : 0; 1056 1057 dev->children[port] = usb; 1058 usb->parent=dev; 1059 /* Run it through the hoops (find a driver, etc) */ 1060 if (usb_new_device(usb)) { 1061 /* Woops, disable the port */ 1062 USB_HUB_PRINTF("hub: disabling port %d\n", port + 1); 1063 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE); 1064 } 1065 } 1066 1067 1068 int usb_hub_configure(struct usb_device *dev) 1069 { 1070 unsigned char buffer[USB_BUFSIZ], *bitmap; 1071 struct usb_hub_descriptor *descriptor; 1072 struct usb_hub_status *hubsts; 1073 int i; 1074 struct usb_hub_device *hub; 1075 1076 /* "allocate" Hub device */ 1077 hub=usb_hub_allocate(); 1078 if(hub==NULL) 1079 return -1; 1080 hub->pusb_dev=dev; 1081 /* Get the the hub descriptor */ 1082 if (usb_get_hub_descriptor(dev, buffer, 4) < 0) { 1083 USB_HUB_PRINTF("usb_hub_configure: failed to get hub descriptor, giving up %lX\n",dev->status); 1084 return -1; 1085 } 1086 descriptor = (struct usb_hub_descriptor *)buffer; 1087 1088 /* silence compiler warning if USB_BUFSIZ is > 256 [= sizeof(char)] */ 1089 i = descriptor->bLength; 1090 if (i > USB_BUFSIZ) { 1091 USB_HUB_PRINTF("usb_hub_configure: failed to get hub descriptor - too long: %d\N", 1092 descriptor->bLength); 1093 return -1; 1094 } 1095 1096 if (usb_get_hub_descriptor(dev, buffer, descriptor->bLength) < 0) { 1097 USB_HUB_PRINTF("usb_hub_configure: failed to get hub descriptor 2nd giving up %lX\n",dev->status); 1098 return -1; 1099 } 1100 memcpy((unsigned char *)&hub->desc,buffer,descriptor->bLength); 1101 /* adjust 16bit values */ 1102 hub->desc.wHubCharacteristics=swap_16(descriptor->wHubCharacteristics); 1103 /* set the bitmap */ 1104 bitmap=(unsigned char *)&hub->desc.DeviceRemovable[0]; 1105 memset(bitmap,0xff,(USB_MAXCHILDREN+1+7)/8); /* devices not removable by default */ 1106 bitmap=(unsigned char *)&hub->desc.PortPowerCtrlMask[0]; 1107 memset(bitmap,0xff,(USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */ 1108 for(i=0;i<((hub->desc.bNbrPorts + 1 + 7)/8);i++) { 1109 hub->desc.DeviceRemovable[i]=descriptor->DeviceRemovable[i]; 1110 } 1111 for(i=0;i<((hub->desc.bNbrPorts + 1 + 7)/8);i++) { 1112 hub->desc.DeviceRemovable[i]=descriptor->PortPowerCtrlMask[i]; 1113 } 1114 dev->maxchild = descriptor->bNbrPorts; 1115 USB_HUB_PRINTF("%d ports detected\n", dev->maxchild); 1116 1117 switch (hub->desc.wHubCharacteristics & HUB_CHAR_LPSM) { 1118 case 0x00: 1119 USB_HUB_PRINTF("ganged power switching\n"); 1120 break; 1121 case 0x01: 1122 USB_HUB_PRINTF("individual port power switching\n"); 1123 break; 1124 case 0x02: 1125 case 0x03: 1126 USB_HUB_PRINTF("unknown reserved power switching mode\n"); 1127 break; 1128 } 1129 1130 if (hub->desc.wHubCharacteristics & HUB_CHAR_COMPOUND) 1131 USB_HUB_PRINTF("part of a compound device\n"); 1132 else 1133 USB_HUB_PRINTF("standalone hub\n"); 1134 1135 switch (hub->desc.wHubCharacteristics & HUB_CHAR_OCPM) { 1136 case 0x00: 1137 USB_HUB_PRINTF("global over-current protection\n"); 1138 break; 1139 case 0x08: 1140 USB_HUB_PRINTF("individual port over-current protection\n"); 1141 break; 1142 case 0x10: 1143 case 0x18: 1144 USB_HUB_PRINTF("no over-current protection\n"); 1145 break; 1146 } 1147 USB_HUB_PRINTF("power on to power good time: %dms\n", descriptor->bPwrOn2PwrGood * 2); 1148 USB_HUB_PRINTF("hub controller current requirement: %dmA\n", descriptor->bHubContrCurrent); 1149 for (i = 0; i < dev->maxchild; i++) 1150 USB_HUB_PRINTF("port %d is%s removable\n", i + 1, 1151 hub->desc.DeviceRemovable[(i + 1)/8] & (1 << ((i + 1)%8)) ? " not" : ""); 1152 if (sizeof(struct usb_hub_status) > USB_BUFSIZ) { 1153 USB_HUB_PRINTF("usb_hub_configure: failed to get Status - too long: %d\n", 1154 descriptor->bLength); 1155 return -1; 1156 } 1157 1158 if (usb_get_hub_status(dev, buffer) < 0) { 1159 USB_HUB_PRINTF("usb_hub_configure: failed to get Status %lX\n",dev->status); 1160 return -1; 1161 } 1162 hubsts = (struct usb_hub_status *)buffer; 1163 USB_HUB_PRINTF("get_hub_status returned status %X, change %X\n", 1164 swap_16(hubsts->wHubStatus),swap_16(hubsts->wHubChange)); 1165 USB_HUB_PRINTF("local power source is %s\n", 1166 (swap_16(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? "lost (inactive)" : "good"); 1167 USB_HUB_PRINTF("%sover-current condition exists\n", 1168 (swap_16(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? "" : "no "); 1169 usb_hub_power_on(hub); 1170 for (i = 0; i < dev->maxchild; i++) { 1171 struct usb_port_status portsts; 1172 unsigned short portstatus, portchange; 1173 1174 if (usb_get_port_status(dev, i + 1, &portsts) < 0) { 1175 USB_HUB_PRINTF("get_port_status failed\n"); 1176 continue; 1177 } 1178 portstatus = swap_16(portsts.wPortStatus); 1179 portchange = swap_16(portsts.wPortChange); 1180 USB_HUB_PRINTF("Port %d Status %X Change %X\n",i+1,portstatus,portchange); 1181 if (portchange & USB_PORT_STAT_C_CONNECTION) { 1182 USB_HUB_PRINTF("port %d connection change\n", i + 1); 1183 usb_hub_port_connect_change(dev, i); 1184 } 1185 if (portchange & USB_PORT_STAT_C_ENABLE) { 1186 USB_HUB_PRINTF("port %d enable change, status %x\n", i + 1, portstatus); 1187 usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_ENABLE); 1188 1189 /* EM interference sometimes causes bad shielded USB devices to 1190 * be shutdown by the hub, this hack enables them again. 1191 * Works at least with mouse driver */ 1192 if (!(portstatus & USB_PORT_STAT_ENABLE) && 1193 (portstatus & USB_PORT_STAT_CONNECTION) && (dev->children[i])) { 1194 USB_HUB_PRINTF("already running port %i disabled by hub (EMI?), re-enabling...\n", 1195 i + 1); 1196 usb_hub_port_connect_change(dev, i); 1197 } 1198 } 1199 if (portstatus & USB_PORT_STAT_SUSPEND) { 1200 USB_HUB_PRINTF("port %d suspend change\n", i + 1); 1201 usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_SUSPEND); 1202 } 1203 1204 if (portchange & USB_PORT_STAT_C_OVERCURRENT) { 1205 USB_HUB_PRINTF("port %d over-current change\n", i + 1); 1206 usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_OVER_CURRENT); 1207 usb_hub_power_on(hub); 1208 } 1209 1210 if (portchange & USB_PORT_STAT_C_RESET) { 1211 USB_HUB_PRINTF("port %d reset change\n", i + 1); 1212 usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET); 1213 } 1214 } /* end for i all ports */ 1215 1216 return 0; 1217 } 1218 1219 int usb_hub_probe(struct usb_device *dev, int ifnum) 1220 { 1221 struct usb_interface_descriptor *iface; 1222 struct usb_endpoint_descriptor *ep; 1223 int ret; 1224 1225 iface = &dev->config.if_desc[ifnum]; 1226 /* Is it a hub? */ 1227 if (iface->bInterfaceClass != USB_CLASS_HUB) 1228 return 0; 1229 /* Some hubs have a subclass of 1, which AFAICT according to the */ 1230 /* specs is not defined, but it works */ 1231 if ((iface->bInterfaceSubClass != 0) && 1232 (iface->bInterfaceSubClass != 1)) 1233 return 0; 1234 /* Multiple endpoints? What kind of mutant ninja-hub is this? */ 1235 if (iface->bNumEndpoints != 1) 1236 return 0; 1237 ep = &iface->ep_desc[0]; 1238 /* Output endpoint? Curiousier and curiousier.. */ 1239 if (!(ep->bEndpointAddress & USB_DIR_IN)) 1240 return 0; 1241 /* If it's not an interrupt endpoint, we'd better punt! */ 1242 if ((ep->bmAttributes & 3) != 3) 1243 return 0; 1244 /* We found a hub */ 1245 USB_HUB_PRINTF("USB hub found\n"); 1246 ret=usb_hub_configure(dev); 1247 return ret; 1248 } 1249 1250 #endif /* (CONFIG_COMMANDS & CFG_CMD_USB) */ 1251 1252 /* EOF */ 1253