1 /* 2 * Linux host USB redirector 3 * 4 * Copyright (c) 2005 Fabrice Bellard 5 * 6 * Copyright (c) 2008 Max Krasnyansky 7 * Support for host device auto connect & disconnect 8 * Major rewrite to support fully async operation 9 * 10 * Copyright 2008 TJ <linux (at) tjworld.net> 11 * Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition 12 * to the legacy /proc/bus/usb USB device discovery and handling 13 * 14 * Permission is hereby granted, free of charge, to any person obtaining a copy 15 * of this software and associated documentation files (the "Software"), to deal 16 * in the Software without restriction, including without limitation the rights 17 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 18 * copies of the Software, and to permit persons to whom the Software is 19 * furnished to do so, subject to the following conditions: 20 * 21 * The above copyright notice and this permission notice shall be included in 22 * all copies or substantial portions of the Software. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 27 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 29 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 30 * THE SOFTWARE. 31 */ 32 33 #include "qemu-common.h" 34 #include "qemu-timer.h" 35 #include "monitor.h" 36 37 #include <dirent.h> 38 #include <sys/ioctl.h> 39 #include <signal.h> 40 41 #include <linux/usbdevice_fs.h> 42 #include <linux/version.h> 43 #include "hw/usb.h" 44 45 /* We redefine it to avoid version problems */ 46 struct usb_ctrltransfer { 47 uint8_t bRequestType; 48 uint8_t bRequest; 49 uint16_t wValue; 50 uint16_t wIndex; 51 uint16_t wLength; 52 uint32_t timeout; 53 void *data; 54 }; 55 56 struct usb_ctrlrequest { 57 uint8_t bRequestType; 58 uint8_t bRequest; 59 uint16_t wValue; 60 uint16_t wIndex; 61 uint16_t wLength; 62 }; 63 64 typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id, 65 int vendor_id, int product_id, 66 const char *product_name, int speed); 67 static int usb_host_find_device(int *pbus_num, int *paddr, 68 char *product_name, int product_name_size, 69 const char *devname); 70 //#define DEBUG 71 72 #ifdef DEBUG 73 #define dprintf printf 74 #else 75 #define dprintf(...) 76 #endif 77 78 #define USBDBG_DEVOPENED "husb: opened %s/devices\n" 79 80 #define USBPROCBUS_PATH "/proc/bus/usb" 81 #define PRODUCT_NAME_SZ 32 82 #define MAX_ENDPOINTS 16 83 #define USBDEVBUS_PATH "/dev/bus/usb" 84 #define USBSYSBUS_PATH "/sys/bus/usb" 85 86 static char *usb_host_device_path; 87 88 #define USB_FS_NONE 0 89 #define USB_FS_PROC 1 90 #define USB_FS_DEV 2 91 #define USB_FS_SYS 3 92 93 static int usb_fs_type; 94 95 /* endpoint association data */ 96 struct endp_data { 97 uint8_t type; 98 uint8_t halted; 99 }; 100 101 enum { 102 CTRL_STATE_IDLE = 0, 103 CTRL_STATE_SETUP, 104 CTRL_STATE_DATA, 105 CTRL_STATE_ACK 106 }; 107 108 /* 109 * Control transfer state. 110 * Note that 'buffer' _must_ follow 'req' field because 111 * we need contigious buffer when we submit control URB. 112 */ 113 struct ctrl_struct { 114 uint16_t len; 115 uint16_t offset; 116 uint8_t state; 117 struct usb_ctrlrequest req; 118 uint8_t buffer[1024]; 119 }; 120 121 typedef struct USBHostDevice { 122 USBDevice dev; 123 int fd; 124 125 uint8_t descr[1024]; 126 int descr_len; 127 int configuration; 128 int ninterfaces; 129 int closing; 130 131 struct ctrl_struct ctrl; 132 struct endp_data endp_table[MAX_ENDPOINTS]; 133 134 /* Host side address */ 135 int bus_num; 136 int addr; 137 138 struct USBHostDevice *next; 139 } USBHostDevice; 140 141 static int is_isoc(USBHostDevice *s, int ep) 142 { 143 return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; 144 } 145 146 static int is_halted(USBHostDevice *s, int ep) 147 { 148 return s->endp_table[ep - 1].halted; 149 } 150 151 static void clear_halt(USBHostDevice *s, int ep) 152 { 153 s->endp_table[ep - 1].halted = 0; 154 } 155 156 static void set_halt(USBHostDevice *s, int ep) 157 { 158 s->endp_table[ep - 1].halted = 1; 159 } 160 161 static USBHostDevice *hostdev_list; 162 163 static void hostdev_link(USBHostDevice *dev) 164 { 165 dev->next = hostdev_list; 166 hostdev_list = dev; 167 } 168 169 static void hostdev_unlink(USBHostDevice *dev) 170 { 171 USBHostDevice *pdev = hostdev_list; 172 USBHostDevice **prev = &hostdev_list; 173 174 while (pdev) { 175 if (pdev == dev) { 176 *prev = dev->next; 177 return; 178 } 179 180 prev = &pdev->next; 181 pdev = pdev->next; 182 } 183 } 184 185 static USBHostDevice *hostdev_find(int bus_num, int addr) 186 { 187 USBHostDevice *s = hostdev_list; 188 while (s) { 189 if (s->bus_num == bus_num && s->addr == addr) 190 return s; 191 s = s->next; 192 } 193 return NULL; 194 } 195 196 /* 197 * Async URB state. 198 * We always allocate one isoc descriptor even for bulk transfers 199 * to simplify allocation and casts. 200 */ 201 typedef struct AsyncURB 202 { 203 struct usbdevfs_urb urb; 204 struct usbdevfs_iso_packet_desc isocpd; 205 206 USBPacket *packet; 207 USBHostDevice *hdev; 208 } AsyncURB; 209 210 static AsyncURB *async_alloc(void) 211 { 212 return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); 213 } 214 215 static void async_free(AsyncURB *aurb) 216 { 217 qemu_free(aurb); 218 } 219 220 static void async_complete_ctrl(USBHostDevice *s, USBPacket *p) 221 { 222 switch(s->ctrl.state) { 223 case CTRL_STATE_SETUP: 224 if (p->len < s->ctrl.len) 225 s->ctrl.len = p->len; 226 s->ctrl.state = CTRL_STATE_DATA; 227 p->len = 8; 228 break; 229 230 case CTRL_STATE_ACK: 231 s->ctrl.state = CTRL_STATE_IDLE; 232 p->len = 0; 233 break; 234 235 default: 236 break; 237 } 238 } 239 240 static void async_complete(void *opaque) 241 { 242 USBHostDevice *s = opaque; 243 AsyncURB *aurb; 244 245 while (1) { 246 USBPacket *p; 247 248 int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb); 249 if (r < 0) { 250 if (errno == EAGAIN) 251 return; 252 253 if (errno == ENODEV && !s->closing) { 254 printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr); 255 usb_device_del_addr(0, s->dev.addr); 256 return; 257 } 258 259 dprintf("husb: async. reap urb failed errno %d\n", errno); 260 return; 261 } 262 263 p = aurb->packet; 264 265 dprintf("husb: async completed. aurb %p status %d alen %d\n", 266 aurb, aurb->urb.status, aurb->urb.actual_length); 267 268 if (p) { 269 switch (aurb->urb.status) { 270 case 0: 271 p->len = aurb->urb.actual_length; 272 if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) 273 async_complete_ctrl(s, p); 274 break; 275 276 case -EPIPE: 277 set_halt(s, p->devep); 278 /* fall through */ 279 default: 280 p->len = USB_RET_NAK; 281 break; 282 } 283 284 usb_packet_complete(p); 285 } 286 287 async_free(aurb); 288 } 289 } 290 291 static void async_cancel(USBPacket *unused, void *opaque) 292 { 293 AsyncURB *aurb = opaque; 294 USBHostDevice *s = aurb->hdev; 295 296 dprintf("husb: async cancel. aurb %p\n", aurb); 297 298 /* Mark it as dead (see async_complete above) */ 299 aurb->packet = NULL; 300 301 int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb); 302 if (r < 0) { 303 dprintf("husb: async. discard urb failed errno %d\n", errno); 304 } 305 } 306 307 static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) 308 { 309 int dev_descr_len, config_descr_len; 310 int interface, nb_interfaces, nb_configurations; 311 int ret, i; 312 313 if (configuration == 0) /* address state - ignore */ 314 return 1; 315 316 dprintf("husb: claiming interfaces. config %d\n", configuration); 317 318 i = 0; 319 dev_descr_len = dev->descr[0]; 320 if (dev_descr_len > dev->descr_len) 321 goto fail; 322 nb_configurations = dev->descr[17]; 323 324 i += dev_descr_len; 325 while (i < dev->descr_len) { 326 dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len, 327 dev->descr[i], dev->descr[i+1]); 328 329 if (dev->descr[i+1] != USB_DT_CONFIG) { 330 i += dev->descr[i]; 331 continue; 332 } 333 config_descr_len = dev->descr[i]; 334 335 printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); 336 337 if (configuration < 0 || configuration == dev->descr[i + 5]) { 338 configuration = dev->descr[i + 5]; 339 break; 340 } 341 342 i += config_descr_len; 343 } 344 345 if (i >= dev->descr_len) { 346 fprintf(stderr, "husb: update iface failed. no matching configuration\n"); 347 goto fail; 348 } 349 nb_interfaces = dev->descr[i + 4]; 350 351 #ifdef USBDEVFS_DISCONNECT 352 /* earlier Linux 2.4 do not support that */ 353 { 354 struct usbdevfs_ioctl ctrl; 355 for (interface = 0; interface < nb_interfaces; interface++) { 356 ctrl.ioctl_code = USBDEVFS_DISCONNECT; 357 ctrl.ifno = interface; 358 ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); 359 if (ret < 0 && errno != ENODATA) { 360 perror("USBDEVFS_DISCONNECT"); 361 goto fail; 362 } 363 } 364 } 365 #endif 366 367 /* XXX: only grab if all interfaces are free */ 368 for (interface = 0; interface < nb_interfaces; interface++) { 369 ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); 370 if (ret < 0) { 371 if (errno == EBUSY) { 372 printf("husb: update iface. device already grabbed\n"); 373 } else { 374 perror("husb: failed to claim interface"); 375 } 376 fail: 377 return 0; 378 } 379 } 380 381 printf("husb: %d interfaces claimed for configuration %d\n", 382 nb_interfaces, configuration); 383 384 dev->ninterfaces = nb_interfaces; 385 dev->configuration = configuration; 386 return 1; 387 } 388 389 static int usb_host_release_interfaces(USBHostDevice *s) 390 { 391 int ret, i; 392 393 dprintf("husb: releasing interfaces\n"); 394 395 for (i = 0; i < s->ninterfaces; i++) { 396 ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); 397 if (ret < 0) { 398 perror("husb: failed to release interface"); 399 return 0; 400 } 401 } 402 403 return 1; 404 } 405 406 static void usb_host_handle_reset(USBDevice *dev) 407 { 408 USBHostDevice *s = (USBHostDevice *) dev; 409 410 dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr); 411 412 ioctl(s->fd, USBDEVFS_RESET); 413 414 usb_host_claim_interfaces(s, s->configuration); 415 } 416 417 static void usb_host_handle_destroy(USBDevice *dev) 418 { 419 USBHostDevice *s = (USBHostDevice *)dev; 420 421 s->closing = 1; 422 423 qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 424 425 hostdev_unlink(s); 426 427 async_complete(s); 428 429 if (s->fd >= 0) 430 close(s->fd); 431 432 qemu_free(s); 433 } 434 435 static int usb_linux_update_endp_table(USBHostDevice *s); 436 437 static int usb_host_handle_data(USBHostDevice *s, USBPacket *p) 438 { 439 struct usbdevfs_urb *urb; 440 AsyncURB *aurb; 441 int ret; 442 443 aurb = async_alloc(); 444 aurb->hdev = s; 445 aurb->packet = p; 446 447 urb = &aurb->urb; 448 449 if (p->pid == USB_TOKEN_IN) 450 urb->endpoint = p->devep | 0x80; 451 else 452 urb->endpoint = p->devep; 453 454 if (is_halted(s, p->devep)) { 455 ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint); 456 if (ret < 0) { 457 dprintf("husb: failed to clear halt. ep 0x%x errno %d\n", 458 urb->endpoint, errno); 459 return USB_RET_NAK; 460 } 461 clear_halt(s, p->devep); 462 } 463 464 urb->buffer = p->data; 465 urb->buffer_length = p->len; 466 467 if (is_isoc(s, p->devep)) { 468 /* Setup ISOC transfer */ 469 urb->type = USBDEVFS_URB_TYPE_ISO; 470 urb->flags = USBDEVFS_URB_ISO_ASAP; 471 urb->number_of_packets = 1; 472 urb->iso_frame_desc[0].length = p->len; 473 } else { 474 /* Setup bulk transfer */ 475 urb->type = USBDEVFS_URB_TYPE_BULK; 476 } 477 478 urb->usercontext = s; 479 480 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); 481 482 dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb); 483 484 if (ret < 0) { 485 dprintf("husb: submit failed. errno %d\n", errno); 486 async_free(aurb); 487 488 switch(errno) { 489 case ETIMEDOUT: 490 return USB_RET_NAK; 491 case EPIPE: 492 default: 493 return USB_RET_STALL; 494 } 495 } 496 497 usb_defer_packet(p, async_cancel, aurb); 498 return USB_RET_ASYNC; 499 } 500 501 static int ctrl_error(void) 502 { 503 if (errno == ETIMEDOUT) 504 return USB_RET_NAK; 505 else 506 return USB_RET_STALL; 507 } 508 509 static int usb_host_set_address(USBHostDevice *s, int addr) 510 { 511 dprintf("husb: ctrl set addr %u\n", addr); 512 s->dev.addr = addr; 513 return 0; 514 } 515 516 static int usb_host_set_config(USBHostDevice *s, int config) 517 { 518 usb_host_release_interfaces(s); 519 520 int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config); 521 522 dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno); 523 524 if (ret < 0) 525 return ctrl_error(); 526 527 usb_host_claim_interfaces(s, config); 528 return 0; 529 } 530 531 static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) 532 { 533 struct usbdevfs_setinterface si; 534 int ret; 535 536 si.interface = iface; 537 si.altsetting = alt; 538 ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); 539 540 dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n", 541 iface, alt, ret, errno); 542 543 if (ret < 0) 544 return ctrl_error(); 545 546 usb_linux_update_endp_table(s); 547 return 0; 548 } 549 550 static int usb_host_handle_control(USBHostDevice *s, USBPacket *p) 551 { 552 struct usbdevfs_urb *urb; 553 AsyncURB *aurb; 554 int ret, value, index; 555 556 /* 557 * Process certain standard device requests. 558 * These are infrequent and are processed synchronously. 559 */ 560 value = le16_to_cpu(s->ctrl.req.wValue); 561 index = le16_to_cpu(s->ctrl.req.wIndex); 562 563 dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n", 564 s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, 565 s->ctrl.len); 566 567 if (s->ctrl.req.bRequestType == 0) { 568 switch (s->ctrl.req.bRequest) { 569 case USB_REQ_SET_ADDRESS: 570 return usb_host_set_address(s, value); 571 572 case USB_REQ_SET_CONFIGURATION: 573 return usb_host_set_config(s, value & 0xff); 574 } 575 } 576 577 if (s->ctrl.req.bRequestType == 1 && 578 s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) 579 return usb_host_set_interface(s, index, value); 580 581 /* The rest are asynchronous */ 582 583 aurb = async_alloc(); 584 aurb->hdev = s; 585 aurb->packet = p; 586 587 /* 588 * Setup ctrl transfer. 589 * 590 * s->ctrl is layed out such that data buffer immediately follows 591 * 'req' struct which is exactly what usbdevfs expects. 592 */ 593 urb = &aurb->urb; 594 595 urb->type = USBDEVFS_URB_TYPE_CONTROL; 596 urb->endpoint = p->devep; 597 598 urb->buffer = &s->ctrl.req; 599 urb->buffer_length = 8 + s->ctrl.len; 600 601 urb->usercontext = s; 602 603 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); 604 605 dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb); 606 607 if (ret < 0) { 608 dprintf("husb: submit failed. errno %d\n", errno); 609 async_free(aurb); 610 611 switch(errno) { 612 case ETIMEDOUT: 613 return USB_RET_NAK; 614 case EPIPE: 615 default: 616 return USB_RET_STALL; 617 } 618 } 619 620 usb_defer_packet(p, async_cancel, aurb); 621 return USB_RET_ASYNC; 622 } 623 624 static int do_token_setup(USBDevice *dev, USBPacket *p) 625 { 626 USBHostDevice *s = (USBHostDevice *) dev; 627 int ret = 0; 628 629 if (p->len != 8) 630 return USB_RET_STALL; 631 632 memcpy(&s->ctrl.req, p->data, 8); 633 s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength); 634 s->ctrl.offset = 0; 635 s->ctrl.state = CTRL_STATE_SETUP; 636 637 if (s->ctrl.req.bRequestType & USB_DIR_IN) { 638 ret = usb_host_handle_control(s, p); 639 if (ret < 0) 640 return ret; 641 642 if (ret < s->ctrl.len) 643 s->ctrl.len = ret; 644 s->ctrl.state = CTRL_STATE_DATA; 645 } else { 646 if (s->ctrl.len == 0) 647 s->ctrl.state = CTRL_STATE_ACK; 648 else 649 s->ctrl.state = CTRL_STATE_DATA; 650 } 651 652 return ret; 653 } 654 655 static int do_token_in(USBDevice *dev, USBPacket *p) 656 { 657 USBHostDevice *s = (USBHostDevice *) dev; 658 int ret = 0; 659 660 if (p->devep != 0) 661 return usb_host_handle_data(s, p); 662 663 switch(s->ctrl.state) { 664 case CTRL_STATE_ACK: 665 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) { 666 ret = usb_host_handle_control(s, p); 667 if (ret == USB_RET_ASYNC) 668 return USB_RET_ASYNC; 669 670 s->ctrl.state = CTRL_STATE_IDLE; 671 return ret > 0 ? 0 : ret; 672 } 673 674 return 0; 675 676 case CTRL_STATE_DATA: 677 if (s->ctrl.req.bRequestType & USB_DIR_IN) { 678 int len = s->ctrl.len - s->ctrl.offset; 679 if (len > p->len) 680 len = p->len; 681 memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len); 682 s->ctrl.offset += len; 683 if (s->ctrl.offset >= s->ctrl.len) 684 s->ctrl.state = CTRL_STATE_ACK; 685 return len; 686 } 687 688 s->ctrl.state = CTRL_STATE_IDLE; 689 return USB_RET_STALL; 690 691 default: 692 return USB_RET_STALL; 693 } 694 } 695 696 static int do_token_out(USBDevice *dev, USBPacket *p) 697 { 698 USBHostDevice *s = (USBHostDevice *) dev; 699 700 if (p->devep != 0) 701 return usb_host_handle_data(s, p); 702 703 switch(s->ctrl.state) { 704 case CTRL_STATE_ACK: 705 if (s->ctrl.req.bRequestType & USB_DIR_IN) { 706 s->ctrl.state = CTRL_STATE_IDLE; 707 /* transfer OK */ 708 } else { 709 /* ignore additional output */ 710 } 711 return 0; 712 713 case CTRL_STATE_DATA: 714 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) { 715 int len = s->ctrl.len - s->ctrl.offset; 716 if (len > p->len) 717 len = p->len; 718 memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len); 719 s->ctrl.offset += len; 720 if (s->ctrl.offset >= s->ctrl.len) 721 s->ctrl.state = CTRL_STATE_ACK; 722 return len; 723 } 724 725 s->ctrl.state = CTRL_STATE_IDLE; 726 return USB_RET_STALL; 727 728 default: 729 return USB_RET_STALL; 730 } 731 } 732 733 /* 734 * Packet handler. 735 * Called by the HC (host controller). 736 * 737 * Returns length of the transaction or one of the USB_RET_XXX codes. 738 */ 739 static int usb_host_handle_packet(USBDevice *s, USBPacket *p) 740 { 741 switch(p->pid) { 742 case USB_MSG_ATTACH: 743 s->state = USB_STATE_ATTACHED; 744 return 0; 745 746 case USB_MSG_DETACH: 747 s->state = USB_STATE_NOTATTACHED; 748 return 0; 749 750 case USB_MSG_RESET: 751 s->remote_wakeup = 0; 752 s->addr = 0; 753 s->state = USB_STATE_DEFAULT; 754 s->handle_reset(s); 755 return 0; 756 } 757 758 /* Rest of the PIDs must match our address */ 759 if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr) 760 return USB_RET_NODEV; 761 762 switch (p->pid) { 763 case USB_TOKEN_SETUP: 764 return do_token_setup(s, p); 765 766 case USB_TOKEN_IN: 767 return do_token_in(s, p); 768 769 case USB_TOKEN_OUT: 770 return do_token_out(s, p); 771 772 default: 773 return USB_RET_STALL; 774 } 775 } 776 777 /* returns 1 on problem encountered or 0 for success */ 778 static int usb_linux_update_endp_table(USBHostDevice *s) 779 { 780 uint8_t *descriptors; 781 uint8_t devep, type, configuration, alt_interface; 782 struct usb_ctrltransfer ct; 783 int interface, ret, length, i; 784 785 ct.bRequestType = USB_DIR_IN; 786 ct.bRequest = USB_REQ_GET_CONFIGURATION; 787 ct.wValue = 0; 788 ct.wIndex = 0; 789 ct.wLength = 1; 790 ct.data = &configuration; 791 ct.timeout = 50; 792 793 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); 794 if (ret < 0) { 795 perror("usb_linux_update_endp_table"); 796 return 1; 797 } 798 799 /* in address state */ 800 if (configuration == 0) 801 return 1; 802 803 /* get the desired configuration, interface, and endpoint descriptors 804 * from device description */ 805 descriptors = &s->descr[18]; 806 length = s->descr_len - 18; 807 i = 0; 808 809 if (descriptors[i + 1] != USB_DT_CONFIG || 810 descriptors[i + 5] != configuration) { 811 dprintf("invalid descriptor data - configuration\n"); 812 return 1; 813 } 814 i += descriptors[i]; 815 816 while (i < length) { 817 if (descriptors[i + 1] != USB_DT_INTERFACE || 818 (descriptors[i + 1] == USB_DT_INTERFACE && 819 descriptors[i + 4] == 0)) { 820 i += descriptors[i]; 821 continue; 822 } 823 824 interface = descriptors[i + 2]; 825 826 ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; 827 ct.bRequest = USB_REQ_GET_INTERFACE; 828 ct.wValue = 0; 829 ct.wIndex = interface; 830 ct.wLength = 1; 831 ct.data = &alt_interface; 832 ct.timeout = 50; 833 834 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); 835 if (ret < 0) { 836 alt_interface = interface; 837 } 838 839 /* the current interface descriptor is the active interface 840 * and has endpoints */ 841 if (descriptors[i + 3] != alt_interface) { 842 i += descriptors[i]; 843 continue; 844 } 845 846 /* advance to the endpoints */ 847 while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) 848 i += descriptors[i]; 849 850 if (i >= length) 851 break; 852 853 while (i < length) { 854 if (descriptors[i + 1] != USB_DT_ENDPOINT) 855 break; 856 857 devep = descriptors[i + 2]; 858 switch (descriptors[i + 3] & 0x3) { 859 case 0x00: 860 type = USBDEVFS_URB_TYPE_CONTROL; 861 break; 862 case 0x01: 863 type = USBDEVFS_URB_TYPE_ISO; 864 break; 865 case 0x02: 866 type = USBDEVFS_URB_TYPE_BULK; 867 break; 868 case 0x03: 869 type = USBDEVFS_URB_TYPE_INTERRUPT; 870 break; 871 default: 872 dprintf("usb_host: malformed endpoint type\n"); 873 type = USBDEVFS_URB_TYPE_BULK; 874 } 875 s->endp_table[(devep & 0xf) - 1].type = type; 876 s->endp_table[(devep & 0xf) - 1].halted = 0; 877 878 i += descriptors[i]; 879 } 880 } 881 return 0; 882 } 883 884 static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name) 885 { 886 int fd = -1, ret; 887 USBHostDevice *dev = NULL; 888 struct usbdevfs_connectinfo ci; 889 char buf[1024]; 890 891 dev = qemu_mallocz(sizeof(USBHostDevice)); 892 893 dev->bus_num = bus_num; 894 dev->addr = addr; 895 896 printf("husb: open device %d.%d\n", bus_num, addr); 897 898 if (!usb_host_device_path) { 899 perror("husb: USB Host Device Path not set"); 900 goto fail; 901 } 902 snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, 903 bus_num, addr); 904 fd = open(buf, O_RDWR | O_NONBLOCK); 905 if (fd < 0) { 906 perror(buf); 907 goto fail; 908 } 909 dprintf("husb: opened %s\n", buf); 910 911 /* read the device description */ 912 dev->descr_len = read(fd, dev->descr, sizeof(dev->descr)); 913 if (dev->descr_len <= 0) { 914 perror("husb: reading device data failed"); 915 goto fail; 916 } 917 918 #ifdef DEBUG 919 { 920 int x; 921 printf("=== begin dumping device descriptor data ===\n"); 922 for (x = 0; x < dev->descr_len; x++) 923 printf("%02x ", dev->descr[x]); 924 printf("\n=== end dumping device descriptor data ===\n"); 925 } 926 #endif 927 928 dev->fd = fd; 929 930 /* 931 * Initial configuration is -1 which makes us claim first 932 * available config. We used to start with 1, which does not 933 * always work. I've seen devices where first config starts 934 * with 2. 935 */ 936 if (!usb_host_claim_interfaces(dev, -1)) 937 goto fail; 938 939 ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); 940 if (ret < 0) { 941 perror("usb_host_device_open: USBDEVFS_CONNECTINFO"); 942 goto fail; 943 } 944 945 printf("husb: grabbed usb device %d.%d\n", bus_num, addr); 946 947 ret = usb_linux_update_endp_table(dev); 948 if (ret) 949 goto fail; 950 951 if (ci.slow) 952 dev->dev.speed = USB_SPEED_LOW; 953 else 954 dev->dev.speed = USB_SPEED_HIGH; 955 956 dev->dev.handle_packet = usb_host_handle_packet; 957 dev->dev.handle_reset = usb_host_handle_reset; 958 dev->dev.handle_destroy = usb_host_handle_destroy; 959 960 if (!prod_name || prod_name[0] == '\0') 961 snprintf(dev->dev.devname, sizeof(dev->dev.devname), 962 "host:%d.%d", bus_num, addr); 963 else 964 pstrcpy(dev->dev.devname, sizeof(dev->dev.devname), 965 prod_name); 966 967 /* USB devio uses 'write' flag to check for async completions */ 968 qemu_set_fd_handler(dev->fd, NULL, async_complete, dev); 969 970 hostdev_link(dev); 971 972 return (USBDevice *) dev; 973 974 fail: 975 if (dev) 976 qemu_free(dev); 977 978 close(fd); 979 return NULL; 980 } 981 982 static int usb_host_auto_add(const char *spec); 983 static int usb_host_auto_del(const char *spec); 984 985 USBDevice *usb_host_device_open(const char *devname) 986 { 987 Monitor *mon = cur_mon; 988 int bus_num, addr; 989 char product_name[PRODUCT_NAME_SZ]; 990 991 if (strstr(devname, "auto:")) { 992 usb_host_auto_add(devname); 993 return NULL; 994 } 995 996 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), 997 devname) < 0) 998 return NULL; 999 1000 if (hostdev_find(bus_num, addr)) { 1001 monitor_printf(mon, "husb: host usb device %d.%d is already open\n", 1002 bus_num, addr); 1003 return NULL; 1004 } 1005 1006 return usb_host_device_open_addr(bus_num, addr, product_name); 1007 } 1008 1009 int usb_host_device_close(const char *devname) 1010 { 1011 char product_name[PRODUCT_NAME_SZ]; 1012 int bus_num, addr; 1013 USBHostDevice *s; 1014 1015 if (strstr(devname, "auto:")) 1016 return usb_host_auto_del(devname); 1017 1018 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), 1019 devname) < 0) 1020 return -1; 1021 1022 s = hostdev_find(bus_num, addr); 1023 if (s) { 1024 usb_device_del_addr(0, s->dev.addr); 1025 return 0; 1026 } 1027 1028 return -1; 1029 } 1030 1031 static int get_tag_value(char *buf, int buf_size, 1032 const char *str, const char *tag, 1033 const char *stopchars) 1034 { 1035 const char *p; 1036 char *q; 1037 p = strstr(str, tag); 1038 if (!p) 1039 return -1; 1040 p += strlen(tag); 1041 while (qemu_isspace(*p)) 1042 p++; 1043 q = buf; 1044 while (*p != '\0' && !strchr(stopchars, *p)) { 1045 if ((q - buf) < (buf_size - 1)) 1046 *q++ = *p; 1047 p++; 1048 } 1049 *q = '\0'; 1050 return q - buf; 1051 } 1052 1053 /* 1054 * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine 1055 * host's USB devices. This is legacy support since many distributions 1056 * are moving to /sys/bus/usb 1057 */ 1058 static int usb_host_scan_dev(void *opaque, USBScanFunc *func) 1059 { 1060 FILE *f = 0; 1061 char line[1024]; 1062 char buf[1024]; 1063 int bus_num, addr, speed, device_count, class_id, product_id, vendor_id; 1064 char product_name[512]; 1065 int ret = 0; 1066 1067 if (!usb_host_device_path) { 1068 perror("husb: USB Host Device Path not set"); 1069 goto the_end; 1070 } 1071 snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); 1072 f = fopen(line, "r"); 1073 if (!f) { 1074 perror("husb: cannot open devices file"); 1075 goto the_end; 1076 } 1077 1078 device_count = 0; 1079 bus_num = addr = speed = class_id = product_id = vendor_id = 0; 1080 for(;;) { 1081 if (fgets(line, sizeof(line), f) == NULL) 1082 break; 1083 if (strlen(line) > 0) 1084 line[strlen(line) - 1] = '\0'; 1085 if (line[0] == 'T' && line[1] == ':') { 1086 if (device_count && (vendor_id || product_id)) { 1087 /* New device. Add the previously discovered device. */ 1088 ret = func(opaque, bus_num, addr, class_id, vendor_id, 1089 product_id, product_name, speed); 1090 if (ret) 1091 goto the_end; 1092 } 1093 if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) 1094 goto fail; 1095 bus_num = atoi(buf); 1096 if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) 1097 goto fail; 1098 addr = atoi(buf); 1099 if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) 1100 goto fail; 1101 if (!strcmp(buf, "480")) 1102 speed = USB_SPEED_HIGH; 1103 else if (!strcmp(buf, "1.5")) 1104 speed = USB_SPEED_LOW; 1105 else 1106 speed = USB_SPEED_FULL; 1107 product_name[0] = '\0'; 1108 class_id = 0xff; 1109 device_count++; 1110 product_id = 0; 1111 vendor_id = 0; 1112 } else if (line[0] == 'P' && line[1] == ':') { 1113 if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) 1114 goto fail; 1115 vendor_id = strtoul(buf, NULL, 16); 1116 if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) 1117 goto fail; 1118 product_id = strtoul(buf, NULL, 16); 1119 } else if (line[0] == 'S' && line[1] == ':') { 1120 if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) 1121 goto fail; 1122 pstrcpy(product_name, sizeof(product_name), buf); 1123 } else if (line[0] == 'D' && line[1] == ':') { 1124 if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) 1125 goto fail; 1126 class_id = strtoul(buf, NULL, 16); 1127 } 1128 fail: ; 1129 } 1130 if (device_count && (vendor_id || product_id)) { 1131 /* Add the last device. */ 1132 ret = func(opaque, bus_num, addr, class_id, vendor_id, 1133 product_id, product_name, speed); 1134 } 1135 the_end: 1136 if (f) 1137 fclose(f); 1138 return ret; 1139 } 1140 1141 /* 1142 * Read sys file-system device file 1143 * 1144 * @line address of buffer to put file contents in 1145 * @line_size size of line 1146 * @device_file path to device file (printf format string) 1147 * @device_name device being opened (inserted into device_file) 1148 * 1149 * @return 0 failed, 1 succeeded ('line' contains data) 1150 */ 1151 static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name) 1152 { 1153 Monitor *mon = cur_mon; 1154 FILE *f; 1155 int ret = 0; 1156 char filename[PATH_MAX]; 1157 1158 snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name, 1159 device_file); 1160 f = fopen(filename, "r"); 1161 if (f) { 1162 ret = (fgets(line, line_size, f) != NULL); 1163 fclose(f); 1164 } else { 1165 monitor_printf(mon, "husb: could not open %s\n", filename); 1166 } 1167 1168 return ret; 1169 } 1170 1171 /* 1172 * Use /sys/bus/usb/devices/ directory to determine host's USB 1173 * devices. 1174 * 1175 * This code is based on Robert Schiele's original patches posted to 1176 * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950 1177 */ 1178 static int usb_host_scan_sys(void *opaque, USBScanFunc *func) 1179 { 1180 DIR *dir = 0; 1181 char line[1024]; 1182 int bus_num, addr, speed, class_id, product_id, vendor_id; 1183 int ret = 0; 1184 char product_name[512]; 1185 struct dirent *de; 1186 1187 dir = opendir(USBSYSBUS_PATH "/devices"); 1188 if (!dir) { 1189 perror("husb: cannot open devices directory"); 1190 goto the_end; 1191 } 1192 1193 while ((de = readdir(dir))) { 1194 if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { 1195 char *tmpstr = de->d_name; 1196 if (!strncmp(de->d_name, "usb", 3)) 1197 tmpstr += 3; 1198 bus_num = atoi(tmpstr); 1199 1200 if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) 1201 goto the_end; 1202 if (sscanf(line, "%d", &addr) != 1) 1203 goto the_end; 1204 1205 if (!usb_host_read_file(line, sizeof(line), "bDeviceClass", 1206 de->d_name)) 1207 goto the_end; 1208 if (sscanf(line, "%x", &class_id) != 1) 1209 goto the_end; 1210 1211 if (!usb_host_read_file(line, sizeof(line), "idVendor", de->d_name)) 1212 goto the_end; 1213 if (sscanf(line, "%x", &vendor_id) != 1) 1214 goto the_end; 1215 1216 if (!usb_host_read_file(line, sizeof(line), "idProduct", 1217 de->d_name)) 1218 goto the_end; 1219 if (sscanf(line, "%x", &product_id) != 1) 1220 goto the_end; 1221 1222 if (!usb_host_read_file(line, sizeof(line), "product", 1223 de->d_name)) { 1224 *product_name = 0; 1225 } else { 1226 if (strlen(line) > 0) 1227 line[strlen(line) - 1] = '\0'; 1228 pstrcpy(product_name, sizeof(product_name), line); 1229 } 1230 1231 if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) 1232 goto the_end; 1233 if (!strcmp(line, "480\n")) 1234 speed = USB_SPEED_HIGH; 1235 else if (!strcmp(line, "1.5\n")) 1236 speed = USB_SPEED_LOW; 1237 else 1238 speed = USB_SPEED_FULL; 1239 1240 ret = func(opaque, bus_num, addr, class_id, vendor_id, 1241 product_id, product_name, speed); 1242 if (ret) 1243 goto the_end; 1244 } 1245 } 1246 the_end: 1247 if (dir) 1248 closedir(dir); 1249 return ret; 1250 } 1251 1252 /* 1253 * Determine how to access the host's USB devices and call the 1254 * specific support function. 1255 */ 1256 static int usb_host_scan(void *opaque, USBScanFunc *func) 1257 { 1258 Monitor *mon = cur_mon; 1259 FILE *f = 0; 1260 DIR *dir = 0; 1261 int ret = 0; 1262 const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; 1263 char devpath[PATH_MAX]; 1264 1265 /* only check the host once */ 1266 if (!usb_fs_type) { 1267 f = fopen(USBPROCBUS_PATH "/devices", "r"); 1268 if (f) { 1269 /* devices found in /proc/bus/usb/ */ 1270 strcpy(devpath, USBPROCBUS_PATH); 1271 usb_fs_type = USB_FS_PROC; 1272 fclose(f); 1273 dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH); 1274 goto found_devices; 1275 } 1276 /* try additional methods if an access method hasn't been found yet */ 1277 f = fopen(USBDEVBUS_PATH "/devices", "r"); 1278 if (f) { 1279 /* devices found in /dev/bus/usb/ */ 1280 strcpy(devpath, USBDEVBUS_PATH); 1281 usb_fs_type = USB_FS_DEV; 1282 fclose(f); 1283 dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH); 1284 goto found_devices; 1285 } 1286 dir = opendir(USBSYSBUS_PATH "/devices"); 1287 if (dir) { 1288 /* devices found in /dev/bus/usb/ (yes - not a mistake!) */ 1289 strcpy(devpath, USBDEVBUS_PATH); 1290 usb_fs_type = USB_FS_SYS; 1291 closedir(dir); 1292 dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH); 1293 goto found_devices; 1294 } 1295 found_devices: 1296 if (!usb_fs_type) { 1297 monitor_printf(mon, "husb: unable to access USB devices\n"); 1298 return -ENOENT; 1299 } 1300 1301 /* the module setting (used later for opening devices) */ 1302 usb_host_device_path = qemu_mallocz(strlen(devpath)+1); 1303 strcpy(usb_host_device_path, devpath); 1304 monitor_printf(mon, "husb: using %s file-system with %s\n", 1305 fs_type[usb_fs_type], usb_host_device_path); 1306 } 1307 1308 switch (usb_fs_type) { 1309 case USB_FS_PROC: 1310 case USB_FS_DEV: 1311 ret = usb_host_scan_dev(opaque, func); 1312 break; 1313 case USB_FS_SYS: 1314 ret = usb_host_scan_sys(opaque, func); 1315 break; 1316 default: 1317 ret = -EINVAL; 1318 break; 1319 } 1320 return ret; 1321 } 1322 1323 struct USBAutoFilter { 1324 struct USBAutoFilter *next; 1325 int bus_num; 1326 int addr; 1327 int vendor_id; 1328 int product_id; 1329 }; 1330 1331 static QEMUTimer *usb_auto_timer; 1332 static struct USBAutoFilter *usb_auto_filter; 1333 1334 static int usb_host_auto_scan(void *opaque, int bus_num, int addr, 1335 int class_id, int vendor_id, int product_id, 1336 const char *product_name, int speed) 1337 { 1338 struct USBAutoFilter *f; 1339 struct USBDevice *dev; 1340 1341 /* Ignore hubs */ 1342 if (class_id == 9) 1343 return 0; 1344 1345 for (f = usb_auto_filter; f; f = f->next) { 1346 if (f->bus_num >= 0 && f->bus_num != bus_num) 1347 continue; 1348 1349 if (f->addr >= 0 && f->addr != addr) 1350 continue; 1351 1352 if (f->vendor_id >= 0 && f->vendor_id != vendor_id) 1353 continue; 1354 1355 if (f->product_id >= 0 && f->product_id != product_id) 1356 continue; 1357 1358 /* We got a match */ 1359 1360 /* Allredy attached ? */ 1361 if (hostdev_find(bus_num, addr)) 1362 return 0; 1363 1364 dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr); 1365 1366 dev = usb_host_device_open_addr(bus_num, addr, product_name); 1367 if (dev) 1368 usb_device_add_dev(dev); 1369 } 1370 1371 return 0; 1372 } 1373 1374 static void usb_host_auto_timer(void *unused) 1375 { 1376 usb_host_scan(NULL, usb_host_auto_scan); 1377 qemu_mod_timer(usb_auto_timer, qemu_get_clock_ms(rt_clock) + 2000); 1378 } 1379 1380 /* 1381 * Autoconnect filter 1382 * Format: 1383 * auto:bus:dev[:vid:pid] 1384 * auto:bus.dev[:vid:pid] 1385 * 1386 * bus - bus number (dec, * means any) 1387 * dev - device number (dec, * means any) 1388 * vid - vendor id (hex, * means any) 1389 * pid - product id (hex, * means any) 1390 * 1391 * See 'lsusb' output. 1392 */ 1393 static int parse_filter(const char *spec, struct USBAutoFilter *f) 1394 { 1395 enum { BUS, DEV, VID, PID, DONE }; 1396 const char *p = spec; 1397 int i; 1398 1399 f->bus_num = -1; 1400 f->addr = -1; 1401 f->vendor_id = -1; 1402 f->product_id = -1; 1403 1404 for (i = BUS; i < DONE; i++) { 1405 p = strpbrk(p, ":."); 1406 if (!p) break; 1407 p++; 1408 1409 if (*p == '*') 1410 continue; 1411 1412 switch(i) { 1413 case BUS: f->bus_num = strtol(p, NULL, 10); break; 1414 case DEV: f->addr = strtol(p, NULL, 10); break; 1415 case VID: f->vendor_id = strtol(p, NULL, 16); break; 1416 case PID: f->product_id = strtol(p, NULL, 16); break; 1417 } 1418 } 1419 1420 if (i < DEV) { 1421 fprintf(stderr, "husb: invalid auto filter spec %s\n", spec); 1422 return -1; 1423 } 1424 1425 return 0; 1426 } 1427 1428 static int match_filter(const struct USBAutoFilter *f1, 1429 const struct USBAutoFilter *f2) 1430 { 1431 return f1->bus_num == f2->bus_num && 1432 f1->addr == f2->addr && 1433 f1->vendor_id == f2->vendor_id && 1434 f1->product_id == f2->product_id; 1435 } 1436 1437 static int usb_host_auto_add(const char *spec) 1438 { 1439 struct USBAutoFilter filter, *f; 1440 1441 if (parse_filter(spec, &filter) < 0) 1442 return -1; 1443 1444 f = qemu_mallocz(sizeof(*f)); 1445 1446 *f = filter; 1447 1448 if (!usb_auto_filter) { 1449 /* 1450 * First entry. Init and start the monitor. 1451 * Right now we're using timer to check for new devices. 1452 * If this turns out to be too expensive we can move that into a 1453 * separate thread. 1454 */ 1455 usb_auto_timer = qemu_new_timer_ms(rt_clock, usb_host_auto_timer, NULL); 1456 if (!usb_auto_timer) { 1457 fprintf(stderr, "husb: failed to allocate auto scan timer\n"); 1458 qemu_free(f); 1459 return -1; 1460 } 1461 1462 /* Check for new devices every two seconds */ 1463 qemu_mod_timer(usb_auto_timer, qemu_get_clock_ms(rt_clock) + 2000); 1464 } 1465 1466 dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n", 1467 f->bus_num, f->addr, f->vendor_id, f->product_id); 1468 1469 f->next = usb_auto_filter; 1470 usb_auto_filter = f; 1471 1472 return 0; 1473 } 1474 1475 static int usb_host_auto_del(const char *spec) 1476 { 1477 struct USBAutoFilter *pf = usb_auto_filter; 1478 struct USBAutoFilter **prev = &usb_auto_filter; 1479 struct USBAutoFilter filter; 1480 1481 if (parse_filter(spec, &filter) < 0) 1482 return -1; 1483 1484 while (pf) { 1485 if (match_filter(pf, &filter)) { 1486 dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n", 1487 pf->bus_num, pf->addr, pf->vendor_id, pf->product_id); 1488 1489 *prev = pf->next; 1490 1491 if (!usb_auto_filter) { 1492 /* No more filters. Stop scanning. */ 1493 qemu_del_timer(usb_auto_timer); 1494 qemu_free_timer(usb_auto_timer); 1495 } 1496 1497 return 0; 1498 } 1499 1500 prev = &pf->next; 1501 pf = pf->next; 1502 } 1503 1504 return -1; 1505 } 1506 1507 typedef struct FindDeviceState { 1508 int vendor_id; 1509 int product_id; 1510 int bus_num; 1511 int addr; 1512 char product_name[PRODUCT_NAME_SZ]; 1513 } FindDeviceState; 1514 1515 static int usb_host_find_device_scan(void *opaque, int bus_num, int addr, 1516 int class_id, 1517 int vendor_id, int product_id, 1518 const char *product_name, int speed) 1519 { 1520 FindDeviceState *s = opaque; 1521 if ((vendor_id == s->vendor_id && 1522 product_id == s->product_id) || 1523 (bus_num == s->bus_num && 1524 addr == s->addr)) { 1525 pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name); 1526 s->bus_num = bus_num; 1527 s->addr = addr; 1528 return 1; 1529 } else { 1530 return 0; 1531 } 1532 } 1533 1534 /* the syntax is : 1535 'bus.addr' (decimal numbers) or 1536 'vendor_id:product_id' (hexa numbers) */ 1537 static int usb_host_find_device(int *pbus_num, int *paddr, 1538 char *product_name, int product_name_size, 1539 const char *devname) 1540 { 1541 const char *p; 1542 int ret; 1543 FindDeviceState fs; 1544 1545 p = strchr(devname, '.'); 1546 if (p) { 1547 *pbus_num = strtoul(devname, NULL, 0); 1548 *paddr = strtoul(p + 1, NULL, 0); 1549 fs.bus_num = *pbus_num; 1550 fs.addr = *paddr; 1551 ret = usb_host_scan(&fs, usb_host_find_device_scan); 1552 if (ret) 1553 pstrcpy(product_name, product_name_size, fs.product_name); 1554 return 0; 1555 } 1556 1557 p = strchr(devname, ':'); 1558 if (p) { 1559 fs.vendor_id = strtoul(devname, NULL, 16); 1560 fs.product_id = strtoul(p + 1, NULL, 16); 1561 ret = usb_host_scan(&fs, usb_host_find_device_scan); 1562 if (ret) { 1563 *pbus_num = fs.bus_num; 1564 *paddr = fs.addr; 1565 pstrcpy(product_name, product_name_size, fs.product_name); 1566 return 0; 1567 } 1568 } 1569 return -1; 1570 } 1571 1572 /**********************/ 1573 /* USB host device info */ 1574 1575 struct usb_class_info { 1576 int class; 1577 const char *class_name; 1578 }; 1579 1580 static const struct usb_class_info usb_class_info[] = { 1581 { USB_CLASS_AUDIO, "Audio"}, 1582 { USB_CLASS_COMM, "Communication"}, 1583 { USB_CLASS_HID, "HID"}, 1584 { USB_CLASS_HUB, "Hub" }, 1585 { USB_CLASS_PHYSICAL, "Physical" }, 1586 { USB_CLASS_PRINTER, "Printer" }, 1587 { USB_CLASS_MASS_STORAGE, "Storage" }, 1588 { USB_CLASS_CDC_DATA, "Data" }, 1589 { USB_CLASS_APP_SPEC, "Application Specific" }, 1590 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" }, 1591 { USB_CLASS_STILL_IMAGE, "Still Image" }, 1592 { USB_CLASS_CSCID, "Smart Card" }, 1593 { USB_CLASS_CONTENT_SEC, "Content Security" }, 1594 { -1, NULL } 1595 }; 1596 1597 static const char *usb_class_str(uint8_t class) 1598 { 1599 const struct usb_class_info *p; 1600 for(p = usb_class_info; p->class != -1; p++) { 1601 if (p->class == class) 1602 break; 1603 } 1604 return p->class_name; 1605 } 1606 1607 static void usb_info_device(int bus_num, int addr, int class_id, 1608 int vendor_id, int product_id, 1609 const char *product_name, 1610 int speed) 1611 { 1612 Monitor *mon = cur_mon; 1613 const char *class_str, *speed_str; 1614 1615 switch(speed) { 1616 case USB_SPEED_LOW: 1617 speed_str = "1.5"; 1618 break; 1619 case USB_SPEED_FULL: 1620 speed_str = "12"; 1621 break; 1622 case USB_SPEED_HIGH: 1623 speed_str = "480"; 1624 break; 1625 default: 1626 speed_str = "?"; 1627 break; 1628 } 1629 1630 monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n", 1631 bus_num, addr, speed_str); 1632 class_str = usb_class_str(class_id); 1633 if (class_str) 1634 monitor_printf(mon, " %s:", class_str); 1635 else 1636 monitor_printf(mon, " Class %02x:", class_id); 1637 monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id); 1638 if (product_name[0] != '\0') 1639 monitor_printf(mon, ", %s", product_name); 1640 monitor_printf(mon, "\n"); 1641 } 1642 1643 static int usb_host_info_device(void *opaque, int bus_num, int addr, 1644 int class_id, 1645 int vendor_id, int product_id, 1646 const char *product_name, 1647 int speed) 1648 { 1649 usb_info_device(bus_num, addr, class_id, vendor_id, product_id, 1650 product_name, speed); 1651 return 0; 1652 } 1653 1654 static void dec2str(int val, char *str, size_t size) 1655 { 1656 if (val == -1) 1657 snprintf(str, size, "*"); 1658 else 1659 snprintf(str, size, "%d", val); 1660 } 1661 1662 static void hex2str(int val, char *str, size_t size) 1663 { 1664 if (val == -1) 1665 snprintf(str, size, "*"); 1666 else 1667 snprintf(str, size, "%x", val); 1668 } 1669 1670 void usb_host_info(Monitor *mon) 1671 { 1672 struct USBAutoFilter *f; 1673 1674 usb_host_scan(NULL, usb_host_info_device); 1675 1676 if (usb_auto_filter) 1677 monitor_printf(mon, " Auto filters:\n"); 1678 for (f = usb_auto_filter; f; f = f->next) { 1679 char bus[10], addr[10], vid[10], pid[10]; 1680 dec2str(f->bus_num, bus, sizeof(bus)); 1681 dec2str(f->addr, addr, sizeof(addr)); 1682 hex2str(f->vendor_id, vid, sizeof(vid)); 1683 hex2str(f->product_id, pid, sizeof(pid)); 1684 monitor_printf(mon, " Device %s.%s ID %s:%s\n", 1685 bus, addr, vid, pid); 1686 } 1687 } 1688
