net: Fix -net socket,listen (Jan Kiszka)
[qemu-kvm/fedora.git] / usb-linux.c
blob191fc757a4fe7a2e31b25b859866f0ffaa9deab4
1 /*
2 * Linux host USB redirector
4 * Copyright (c) 2005 Fabrice Bellard
6 * Copyright (c) 2008 Max Krasnyansky
7 * Support for host device auto connect & disconnect
8 * Major rewrite to support fully async operation
10 * Copyright 2008 TJ <linux@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
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:
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
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.
33 #include "qemu-common.h"
34 #include "qemu-timer.h"
35 #include "console.h"
37 #if defined(__linux__)
38 #define __user
39 #endif
41 #include <dirent.h>
42 #include <sys/ioctl.h>
43 #include <signal.h>
45 #include <linux/usbdevice_fs.h>
46 #include <linux/version.h>
47 #include "hw/usb.h"
49 /* We redefine it to avoid version problems */
50 struct usb_ctrltransfer {
51 uint8_t bRequestType;
52 uint8_t bRequest;
53 uint16_t wValue;
54 uint16_t wIndex;
55 uint16_t wLength;
56 uint32_t timeout;
57 void *data;
60 struct usb_ctrlrequest {
61 uint8_t bRequestType;
62 uint8_t bRequest;
63 uint16_t wValue;
64 uint16_t wIndex;
65 uint16_t wLength;
68 typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
69 int vendor_id, int product_id,
70 const char *product_name, int speed);
71 static int usb_host_find_device(int *pbus_num, int *paddr,
72 char *product_name, int product_name_size,
73 const char *devname);
74 //#define DEBUG
76 #ifdef DEBUG
77 #define dprintf printf
78 #else
79 #define dprintf(...)
80 #endif
82 #define USBDBG_DEVOPENED "husb: opened %s/devices\n"
84 #define USBPROCBUS_PATH "/proc/bus/usb"
85 #define PRODUCT_NAME_SZ 32
86 #define MAX_ENDPOINTS 16
87 #define USBDEVBUS_PATH "/dev/bus/usb"
88 #define USBSYSBUS_PATH "/sys/bus/usb"
90 static char *usb_host_device_path;
92 #define USB_FS_NONE 0
93 #define USB_FS_PROC 1
94 #define USB_FS_DEV 2
95 #define USB_FS_SYS 3
97 static int usb_fs_type;
99 /* endpoint association data */
100 struct endp_data {
101 uint8_t type;
102 uint8_t halted;
105 enum {
106 CTRL_STATE_IDLE = 0,
107 CTRL_STATE_SETUP,
108 CTRL_STATE_DATA,
109 CTRL_STATE_ACK
113 * Control transfer state.
114 * Note that 'buffer' _must_ follow 'req' field because
115 * we need contigious buffer when we submit control URB.
117 struct ctrl_struct {
118 uint16_t len;
119 uint16_t offset;
120 uint8_t state;
121 struct usb_ctrlrequest req;
122 uint8_t buffer[1024];
125 typedef struct USBHostDevice {
126 USBDevice dev;
127 int fd;
129 uint8_t descr[1024];
130 int descr_len;
131 int configuration;
132 int ninterfaces;
133 int closing;
135 struct ctrl_struct ctrl;
136 struct endp_data endp_table[MAX_ENDPOINTS];
138 /* Host side address */
139 int bus_num;
140 int addr;
142 struct USBHostDevice *next;
143 } USBHostDevice;
145 static int is_isoc(USBHostDevice *s, int ep)
147 return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO;
150 static int is_halted(USBHostDevice *s, int ep)
152 return s->endp_table[ep - 1].halted;
155 static void clear_halt(USBHostDevice *s, int ep)
157 s->endp_table[ep - 1].halted = 0;
160 static void set_halt(USBHostDevice *s, int ep)
162 s->endp_table[ep - 1].halted = 1;
165 static USBHostDevice *hostdev_list;
167 static void hostdev_link(USBHostDevice *dev)
169 dev->next = hostdev_list;
170 hostdev_list = dev;
173 static void hostdev_unlink(USBHostDevice *dev)
175 USBHostDevice *pdev = hostdev_list;
176 USBHostDevice **prev = &hostdev_list;
178 while (pdev) {
179 if (pdev == dev) {
180 *prev = dev->next;
181 return;
184 prev = &pdev->next;
185 pdev = pdev->next;
189 static USBHostDevice *hostdev_find(int bus_num, int addr)
191 USBHostDevice *s = hostdev_list;
192 while (s) {
193 if (s->bus_num == bus_num && s->addr == addr)
194 return s;
195 s = s->next;
197 return NULL;
201 * Async URB state.
202 * We always allocate one isoc descriptor even for bulk transfers
203 * to simplify allocation and casts.
205 typedef struct AsyncURB
207 struct usbdevfs_urb urb;
208 struct usbdevfs_iso_packet_desc isocpd;
210 USBPacket *packet;
211 USBHostDevice *hdev;
212 } AsyncURB;
214 static AsyncURB *async_alloc(void)
216 return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB));
219 static void async_free(AsyncURB *aurb)
221 qemu_free(aurb);
224 static void async_complete_ctrl(USBHostDevice *s, USBPacket *p)
226 switch(s->ctrl.state) {
227 case CTRL_STATE_SETUP:
228 if (p->len < s->ctrl.len)
229 s->ctrl.len = p->len;
230 s->ctrl.state = CTRL_STATE_DATA;
231 p->len = 8;
232 break;
234 case CTRL_STATE_ACK:
235 s->ctrl.state = CTRL_STATE_IDLE;
236 p->len = 0;
237 break;
239 default:
240 break;
244 static void async_complete(void *opaque)
246 USBHostDevice *s = opaque;
247 AsyncURB *aurb;
249 while (1) {
250 USBPacket *p;
252 int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
253 if (r < 0) {
254 if (errno == EAGAIN)
255 return;
257 if (errno == ENODEV && !s->closing) {
258 printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr);
259 usb_device_del_addr(0, s->dev.addr);
260 return;
263 dprintf("husb: async. reap urb failed errno %d\n", errno);
264 return;
267 p = aurb->packet;
269 dprintf("husb: async completed. aurb %p status %d alen %d\n",
270 aurb, aurb->urb.status, aurb->urb.actual_length);
272 if (p) {
273 switch (aurb->urb.status) {
274 case 0:
275 p->len = aurb->urb.actual_length;
276 if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL)
277 async_complete_ctrl(s, p);
278 break;
280 case -EPIPE:
281 set_halt(s, p->devep);
282 /* fall through */
283 default:
284 p->len = USB_RET_NAK;
285 break;
288 usb_packet_complete(p);
291 async_free(aurb);
295 static void async_cancel(USBPacket *unused, void *opaque)
297 AsyncURB *aurb = opaque;
298 USBHostDevice *s = aurb->hdev;
300 dprintf("husb: async cancel. aurb %p\n", aurb);
302 /* Mark it as dead (see async_complete above) */
303 aurb->packet = NULL;
305 int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
306 if (r < 0) {
307 dprintf("husb: async. discard urb failed errno %d\n", errno);
311 static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
313 int dev_descr_len, config_descr_len;
314 int interface, nb_interfaces, nb_configurations;
315 int ret, i;
317 if (configuration == 0) /* address state - ignore */
318 return 1;
320 dprintf("husb: claiming interfaces. config %d\n", configuration);
322 i = 0;
323 dev_descr_len = dev->descr[0];
324 if (dev_descr_len > dev->descr_len)
325 goto fail;
326 nb_configurations = dev->descr[17];
328 i += dev_descr_len;
329 while (i < dev->descr_len) {
330 dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
331 dev->descr[i], dev->descr[i+1]);
333 if (dev->descr[i+1] != USB_DT_CONFIG) {
334 i += dev->descr[i];
335 continue;
337 config_descr_len = dev->descr[i];
339 printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration);
341 if (configuration < 0 || configuration == dev->descr[i + 5]) {
342 configuration = dev->descr[i + 5];
343 break;
346 i += config_descr_len;
349 if (i >= dev->descr_len) {
350 fprintf(stderr, "husb: update iface failed. no matching configuration\n");
351 goto fail;
353 nb_interfaces = dev->descr[i + 4];
355 #ifdef USBDEVFS_DISCONNECT
356 /* earlier Linux 2.4 do not support that */
358 struct usbdevfs_ioctl ctrl;
359 for (interface = 0; interface < nb_interfaces; interface++) {
360 ctrl.ioctl_code = USBDEVFS_DISCONNECT;
361 ctrl.ifno = interface;
362 ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
363 if (ret < 0 && errno != ENODATA) {
364 perror("USBDEVFS_DISCONNECT");
365 goto fail;
369 #endif
371 /* XXX: only grab if all interfaces are free */
372 for (interface = 0; interface < nb_interfaces; interface++) {
373 ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
374 if (ret < 0) {
375 if (errno == EBUSY) {
376 printf("husb: update iface. device already grabbed\n");
377 } else {
378 perror("husb: failed to claim interface");
380 fail:
381 return 0;
385 printf("husb: %d interfaces claimed for configuration %d\n",
386 nb_interfaces, configuration);
388 dev->ninterfaces = nb_interfaces;
389 dev->configuration = configuration;
390 return 1;
393 static int usb_host_release_interfaces(USBHostDevice *s)
395 int ret, i;
397 dprintf("husb: releasing interfaces\n");
399 for (i = 0; i < s->ninterfaces; i++) {
400 ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i);
401 if (ret < 0) {
402 perror("husb: failed to release interface");
403 return 0;
407 return 1;
410 static void usb_host_handle_reset(USBDevice *dev)
412 USBHostDevice *s = (USBHostDevice *) dev;
414 dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);
416 ioctl(s->fd, USBDEVFS_RESET);
418 usb_host_claim_interfaces(s, s->configuration);
421 static void usb_host_handle_destroy(USBDevice *dev)
423 USBHostDevice *s = (USBHostDevice *)dev;
425 s->closing = 1;
427 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
429 hostdev_unlink(s);
431 async_complete(s);
433 if (s->fd >= 0)
434 close(s->fd);
436 qemu_free(s);
439 static int usb_linux_update_endp_table(USBHostDevice *s);
441 static int usb_host_handle_data(USBHostDevice *s, USBPacket *p)
443 struct usbdevfs_urb *urb;
444 AsyncURB *aurb;
445 int ret;
447 aurb = async_alloc();
448 aurb->hdev = s;
449 aurb->packet = p;
451 urb = &aurb->urb;
453 if (p->pid == USB_TOKEN_IN)
454 urb->endpoint = p->devep | 0x80;
455 else
456 urb->endpoint = p->devep;
458 if (is_halted(s, p->devep)) {
459 ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint);
460 if (ret < 0) {
461 dprintf("husb: failed to clear halt. ep 0x%x errno %d\n",
462 urb->endpoint, errno);
463 return USB_RET_NAK;
465 clear_halt(s, p->devep);
468 urb->buffer = p->data;
469 urb->buffer_length = p->len;
471 if (is_isoc(s, p->devep)) {
472 /* Setup ISOC transfer */
473 urb->type = USBDEVFS_URB_TYPE_ISO;
474 urb->flags = USBDEVFS_URB_ISO_ASAP;
475 urb->number_of_packets = 1;
476 urb->iso_frame_desc[0].length = p->len;
477 } else {
478 /* Setup bulk transfer */
479 urb->type = USBDEVFS_URB_TYPE_BULK;
482 urb->usercontext = s;
484 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
486 dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb);
488 if (ret < 0) {
489 dprintf("husb: submit failed. errno %d\n", errno);
490 async_free(aurb);
492 switch(errno) {
493 case ETIMEDOUT:
494 return USB_RET_NAK;
495 case EPIPE:
496 default:
497 return USB_RET_STALL;
501 usb_defer_packet(p, async_cancel, aurb);
502 return USB_RET_ASYNC;
505 static int ctrl_error(void)
507 if (errno == ETIMEDOUT)
508 return USB_RET_NAK;
509 else
510 return USB_RET_STALL;
513 static int usb_host_set_address(USBHostDevice *s, int addr)
515 dprintf("husb: ctrl set addr %u\n", addr);
516 s->dev.addr = addr;
517 return 0;
520 static int usb_host_set_config(USBHostDevice *s, int config)
522 usb_host_release_interfaces(s);
524 int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
526 dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
528 if (ret < 0)
529 return ctrl_error();
531 usb_host_claim_interfaces(s, config);
532 return 0;
535 static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
537 struct usbdevfs_setinterface si;
538 int ret;
540 si.interface = iface;
541 si.altsetting = alt;
542 ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
544 dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n",
545 iface, alt, ret, errno);
547 if (ret < 0)
548 return ctrl_error();
550 usb_linux_update_endp_table(s);
551 return 0;
554 static int usb_host_handle_control(USBHostDevice *s, USBPacket *p)
556 struct usbdevfs_urb *urb;
557 AsyncURB *aurb;
558 int ret, value, index;
561 * Process certain standard device requests.
562 * These are infrequent and are processed synchronously.
564 value = le16_to_cpu(s->ctrl.req.wValue);
565 index = le16_to_cpu(s->ctrl.req.wIndex);
567 dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
568 s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index,
569 s->ctrl.len);
571 if (s->ctrl.req.bRequestType == 0) {
572 switch (s->ctrl.req.bRequest) {
573 case USB_REQ_SET_ADDRESS:
574 return usb_host_set_address(s, value);
576 case USB_REQ_SET_CONFIGURATION:
577 return usb_host_set_config(s, value & 0xff);
581 if (s->ctrl.req.bRequestType == 1 &&
582 s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE)
583 return usb_host_set_interface(s, index, value);
585 /* The rest are asynchronous */
587 aurb = async_alloc();
588 aurb->hdev = s;
589 aurb->packet = p;
592 * Setup ctrl transfer.
594 * s->ctrl is layed out such that data buffer immediately follows
595 * 'req' struct which is exactly what usbdevfs expects.
597 urb = &aurb->urb;
599 urb->type = USBDEVFS_URB_TYPE_CONTROL;
600 urb->endpoint = p->devep;
602 urb->buffer = &s->ctrl.req;
603 urb->buffer_length = 8 + s->ctrl.len;
605 urb->usercontext = s;
607 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
609 dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
611 if (ret < 0) {
612 dprintf("husb: submit failed. errno %d\n", errno);
613 async_free(aurb);
615 switch(errno) {
616 case ETIMEDOUT:
617 return USB_RET_NAK;
618 case EPIPE:
619 default:
620 return USB_RET_STALL;
624 usb_defer_packet(p, async_cancel, aurb);
625 return USB_RET_ASYNC;
628 static int do_token_setup(USBDevice *dev, USBPacket *p)
630 USBHostDevice *s = (USBHostDevice *) dev;
631 int ret = 0;
633 if (p->len != 8)
634 return USB_RET_STALL;
636 memcpy(&s->ctrl.req, p->data, 8);
637 s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength);
638 s->ctrl.offset = 0;
639 s->ctrl.state = CTRL_STATE_SETUP;
641 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
642 ret = usb_host_handle_control(s, p);
643 if (ret < 0)
644 return ret;
646 if (ret < s->ctrl.len)
647 s->ctrl.len = ret;
648 s->ctrl.state = CTRL_STATE_DATA;
649 } else {
650 if (s->ctrl.len == 0)
651 s->ctrl.state = CTRL_STATE_ACK;
652 else
653 s->ctrl.state = CTRL_STATE_DATA;
656 return ret;
659 static int do_token_in(USBDevice *dev, USBPacket *p)
661 USBHostDevice *s = (USBHostDevice *) dev;
662 int ret = 0;
664 if (p->devep != 0)
665 return usb_host_handle_data(s, p);
667 switch(s->ctrl.state) {
668 case CTRL_STATE_ACK:
669 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
670 ret = usb_host_handle_control(s, p);
671 if (ret == USB_RET_ASYNC)
672 return USB_RET_ASYNC;
674 s->ctrl.state = CTRL_STATE_IDLE;
675 return ret > 0 ? 0 : ret;
678 return 0;
680 case CTRL_STATE_DATA:
681 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
682 int len = s->ctrl.len - s->ctrl.offset;
683 if (len > p->len)
684 len = p->len;
685 memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len);
686 s->ctrl.offset += len;
687 if (s->ctrl.offset >= s->ctrl.len)
688 s->ctrl.state = CTRL_STATE_ACK;
689 return len;
692 s->ctrl.state = CTRL_STATE_IDLE;
693 return USB_RET_STALL;
695 default:
696 return USB_RET_STALL;
700 static int do_token_out(USBDevice *dev, USBPacket *p)
702 USBHostDevice *s = (USBHostDevice *) dev;
704 if (p->devep != 0)
705 return usb_host_handle_data(s, p);
707 switch(s->ctrl.state) {
708 case CTRL_STATE_ACK:
709 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
710 s->ctrl.state = CTRL_STATE_IDLE;
711 /* transfer OK */
712 } else {
713 /* ignore additional output */
715 return 0;
717 case CTRL_STATE_DATA:
718 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
719 int len = s->ctrl.len - s->ctrl.offset;
720 if (len > p->len)
721 len = p->len;
722 memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len);
723 s->ctrl.offset += len;
724 if (s->ctrl.offset >= s->ctrl.len)
725 s->ctrl.state = CTRL_STATE_ACK;
726 return len;
729 s->ctrl.state = CTRL_STATE_IDLE;
730 return USB_RET_STALL;
732 default:
733 return USB_RET_STALL;
738 * Packet handler.
739 * Called by the HC (host controller).
741 * Returns length of the transaction or one of the USB_RET_XXX codes.
743 static int usb_host_handle_packet(USBDevice *s, USBPacket *p)
745 switch(p->pid) {
746 case USB_MSG_ATTACH:
747 s->state = USB_STATE_ATTACHED;
748 return 0;
750 case USB_MSG_DETACH:
751 s->state = USB_STATE_NOTATTACHED;
752 return 0;
754 case USB_MSG_RESET:
755 s->remote_wakeup = 0;
756 s->addr = 0;
757 s->state = USB_STATE_DEFAULT;
758 s->handle_reset(s);
759 return 0;
762 /* Rest of the PIDs must match our address */
763 if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
764 return USB_RET_NODEV;
766 switch (p->pid) {
767 case USB_TOKEN_SETUP:
768 return do_token_setup(s, p);
770 case USB_TOKEN_IN:
771 return do_token_in(s, p);
773 case USB_TOKEN_OUT:
774 return do_token_out(s, p);
776 default:
777 return USB_RET_STALL;
781 /* returns 1 on problem encountered or 0 for success */
782 static int usb_linux_update_endp_table(USBHostDevice *s)
784 uint8_t *descriptors;
785 uint8_t devep, type, configuration, alt_interface;
786 struct usb_ctrltransfer ct;
787 int interface, ret, length, i;
789 ct.bRequestType = USB_DIR_IN;
790 ct.bRequest = USB_REQ_GET_CONFIGURATION;
791 ct.wValue = 0;
792 ct.wIndex = 0;
793 ct.wLength = 1;
794 ct.data = &configuration;
795 ct.timeout = 50;
797 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
798 if (ret < 0) {
799 perror("usb_linux_update_endp_table");
800 return 1;
803 /* in address state */
804 if (configuration == 0)
805 return 1;
807 /* get the desired configuration, interface, and endpoint descriptors
808 * from device description */
809 descriptors = &s->descr[18];
810 length = s->descr_len - 18;
811 i = 0;
813 if (descriptors[i + 1] != USB_DT_CONFIG ||
814 descriptors[i + 5] != configuration) {
815 dprintf("invalid descriptor data - configuration\n");
816 return 1;
818 i += descriptors[i];
820 while (i < length) {
821 if (descriptors[i + 1] != USB_DT_INTERFACE ||
822 (descriptors[i + 1] == USB_DT_INTERFACE &&
823 descriptors[i + 4] == 0)) {
824 i += descriptors[i];
825 continue;
828 interface = descriptors[i + 2];
830 ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
831 ct.bRequest = USB_REQ_GET_INTERFACE;
832 ct.wValue = 0;
833 ct.wIndex = interface;
834 ct.wLength = 1;
835 ct.data = &alt_interface;
836 ct.timeout = 50;
838 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
839 if (ret < 0) {
840 perror("usb_linux_update_endp_table");
841 return 1;
844 /* the current interface descriptor is the active interface
845 * and has endpoints */
846 if (descriptors[i + 3] != alt_interface) {
847 i += descriptors[i];
848 continue;
851 /* advance to the endpoints */
852 while (i < length && descriptors[i +1] != USB_DT_ENDPOINT)
853 i += descriptors[i];
855 if (i >= length)
856 break;
858 while (i < length) {
859 if (descriptors[i + 1] != USB_DT_ENDPOINT)
860 break;
862 devep = descriptors[i + 2];
863 switch (descriptors[i + 3] & 0x3) {
864 case 0x00:
865 type = USBDEVFS_URB_TYPE_CONTROL;
866 break;
867 case 0x01:
868 type = USBDEVFS_URB_TYPE_ISO;
869 break;
870 case 0x02:
871 type = USBDEVFS_URB_TYPE_BULK;
872 break;
873 case 0x03:
874 type = USBDEVFS_URB_TYPE_INTERRUPT;
875 break;
876 default:
877 dprintf("usb_host: malformed endpoint type\n");
878 type = USBDEVFS_URB_TYPE_BULK;
880 s->endp_table[(devep & 0xf) - 1].type = type;
881 s->endp_table[(devep & 0xf) - 1].halted = 0;
883 i += descriptors[i];
886 return 0;
889 static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name)
891 int fd = -1, ret;
892 USBHostDevice *dev = NULL;
893 struct usbdevfs_connectinfo ci;
894 char buf[1024];
896 dev = qemu_mallocz(sizeof(USBHostDevice));
898 dev->bus_num = bus_num;
899 dev->addr = addr;
901 printf("husb: open device %d.%d\n", bus_num, addr);
903 if (!usb_host_device_path) {
904 perror("husb: USB Host Device Path not set");
905 goto fail;
907 snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path,
908 bus_num, addr);
909 fd = open(buf, O_RDWR | O_NONBLOCK);
910 if (fd < 0) {
911 perror(buf);
912 goto fail;
914 dprintf("husb: opened %s\n", buf);
916 /* read the device description */
917 dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
918 if (dev->descr_len <= 0) {
919 perror("husb: reading device data failed");
920 goto fail;
923 #ifdef DEBUG
925 int x;
926 printf("=== begin dumping device descriptor data ===\n");
927 for (x = 0; x < dev->descr_len; x++)
928 printf("%02x ", dev->descr[x]);
929 printf("\n=== end dumping device descriptor data ===\n");
931 #endif
933 dev->fd = fd;
936 * Initial configuration is -1 which makes us claim first
937 * available config. We used to start with 1, which does not
938 * always work. I've seen devices where first config starts
939 * with 2.
941 if (!usb_host_claim_interfaces(dev, -1))
942 goto fail;
944 ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
945 if (ret < 0) {
946 perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
947 goto fail;
950 printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
952 ret = usb_linux_update_endp_table(dev);
953 if (ret)
954 goto fail;
956 if (ci.slow)
957 dev->dev.speed = USB_SPEED_LOW;
958 else
959 dev->dev.speed = USB_SPEED_HIGH;
961 dev->dev.handle_packet = usb_host_handle_packet;
962 dev->dev.handle_reset = usb_host_handle_reset;
963 dev->dev.handle_destroy = usb_host_handle_destroy;
965 if (!prod_name || prod_name[0] == '\0')
966 snprintf(dev->dev.devname, sizeof(dev->dev.devname),
967 "host:%d.%d", bus_num, addr);
968 else
969 pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
970 prod_name);
972 /* USB devio uses 'write' flag to check for async completions */
973 qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
975 hostdev_link(dev);
977 return (USBDevice *) dev;
979 fail:
980 if (dev)
981 qemu_free(dev);
983 close(fd);
984 return NULL;
987 static int usb_host_auto_add(const char *spec);
988 static int usb_host_auto_del(const char *spec);
990 USBDevice *usb_host_device_open(const char *devname)
992 int bus_num, addr;
993 char product_name[PRODUCT_NAME_SZ];
995 if (strstr(devname, "auto:")) {
996 usb_host_auto_add(devname);
997 return NULL;
1000 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
1001 devname) < 0)
1002 return NULL;
1004 if (hostdev_find(bus_num, addr)) {
1005 term_printf("husb: host usb device %d.%d is already open\n", bus_num, addr);
1006 return NULL;
1009 return usb_host_device_open_addr(bus_num, addr, product_name);
1012 int usb_host_device_close(const char *devname)
1014 char product_name[PRODUCT_NAME_SZ];
1015 int bus_num, addr;
1016 USBHostDevice *s;
1018 if (strstr(devname, "auto:"))
1019 return usb_host_auto_del(devname);
1021 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
1022 devname) < 0)
1023 return -1;
1025 s = hostdev_find(bus_num, addr);
1026 if (s) {
1027 usb_device_del_addr(0, s->dev.addr);
1028 return 0;
1031 return -1;
1034 static int get_tag_value(char *buf, int buf_size,
1035 const char *str, const char *tag,
1036 const char *stopchars)
1038 const char *p;
1039 char *q;
1040 p = strstr(str, tag);
1041 if (!p)
1042 return -1;
1043 p += strlen(tag);
1044 while (qemu_isspace(*p))
1045 p++;
1046 q = buf;
1047 while (*p != '\0' && !strchr(stopchars, *p)) {
1048 if ((q - buf) < (buf_size - 1))
1049 *q++ = *p;
1050 p++;
1052 *q = '\0';
1053 return q - buf;
1057 * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
1058 * host's USB devices. This is legacy support since many distributions
1059 * are moving to /sys/bus/usb
1061 static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
1063 FILE *f = 0;
1064 char line[1024];
1065 char buf[1024];
1066 int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
1067 char product_name[512];
1068 int ret = 0;
1070 if (!usb_host_device_path) {
1071 perror("husb: USB Host Device Path not set");
1072 goto the_end;
1074 snprintf(line, sizeof(line), "%s/devices", usb_host_device_path);
1075 f = fopen(line, "r");
1076 if (!f) {
1077 perror("husb: cannot open devices file");
1078 goto the_end;
1081 device_count = 0;
1082 bus_num = addr = speed = class_id = product_id = vendor_id = 0;
1083 for(;;) {
1084 if (fgets(line, sizeof(line), f) == NULL)
1085 break;
1086 if (strlen(line) > 0)
1087 line[strlen(line) - 1] = '\0';
1088 if (line[0] == 'T' && line[1] == ':') {
1089 if (device_count && (vendor_id || product_id)) {
1090 /* New device. Add the previously discovered device. */
1091 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1092 product_id, product_name, speed);
1093 if (ret)
1094 goto the_end;
1096 if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
1097 goto fail;
1098 bus_num = atoi(buf);
1099 if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
1100 goto fail;
1101 addr = atoi(buf);
1102 if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
1103 goto fail;
1104 if (!strcmp(buf, "480"))
1105 speed = USB_SPEED_HIGH;
1106 else if (!strcmp(buf, "1.5"))
1107 speed = USB_SPEED_LOW;
1108 else
1109 speed = USB_SPEED_FULL;
1110 product_name[0] = '\0';
1111 class_id = 0xff;
1112 device_count++;
1113 product_id = 0;
1114 vendor_id = 0;
1115 } else if (line[0] == 'P' && line[1] == ':') {
1116 if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
1117 goto fail;
1118 vendor_id = strtoul(buf, NULL, 16);
1119 if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
1120 goto fail;
1121 product_id = strtoul(buf, NULL, 16);
1122 } else if (line[0] == 'S' && line[1] == ':') {
1123 if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
1124 goto fail;
1125 pstrcpy(product_name, sizeof(product_name), buf);
1126 } else if (line[0] == 'D' && line[1] == ':') {
1127 if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
1128 goto fail;
1129 class_id = strtoul(buf, NULL, 16);
1131 fail: ;
1133 if (device_count && (vendor_id || product_id)) {
1134 /* Add the last device. */
1135 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1136 product_id, product_name, speed);
1138 the_end:
1139 if (f)
1140 fclose(f);
1141 return ret;
1145 * Read sys file-system device file
1147 * @line address of buffer to put file contents in
1148 * @line_size size of line
1149 * @device_file path to device file (printf format string)
1150 * @device_name device being opened (inserted into device_file)
1152 * @return 0 failed, 1 succeeded ('line' contains data)
1154 static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name)
1156 FILE *f;
1157 int ret = 0;
1158 char filename[PATH_MAX];
1160 snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
1161 device_file);
1162 f = fopen(filename, "r");
1163 if (f) {
1164 fgets(line, line_size, f);
1165 fclose(f);
1166 ret = 1;
1167 } else {
1168 term_printf("husb: could not open %s\n", filename);
1171 return ret;
1175 * Use /sys/bus/usb/devices/ directory to determine host's USB
1176 * devices.
1178 * This code is based on Robert Schiele's original patches posted to
1179 * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
1181 static int usb_host_scan_sys(void *opaque, USBScanFunc *func)
1183 DIR *dir = 0;
1184 char line[1024];
1185 int bus_num, addr, speed, class_id, product_id, vendor_id;
1186 int ret = 0;
1187 char product_name[512];
1188 struct dirent *de;
1190 dir = opendir(USBSYSBUS_PATH "/devices");
1191 if (!dir) {
1192 perror("husb: cannot open devices directory");
1193 goto the_end;
1196 while ((de = readdir(dir))) {
1197 if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
1198 char *tmpstr = de->d_name;
1199 if (!strncmp(de->d_name, "usb", 3))
1200 tmpstr += 3;
1201 bus_num = atoi(tmpstr);
1203 if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name))
1204 goto the_end;
1205 if (sscanf(line, "%d", &addr) != 1)
1206 goto the_end;
1208 if (!usb_host_read_file(line, sizeof(line), "bDeviceClass",
1209 de->d_name))
1210 goto the_end;
1211 if (sscanf(line, "%x", &class_id) != 1)
1212 goto the_end;
1214 if (!usb_host_read_file(line, sizeof(line), "idVendor", de->d_name))
1215 goto the_end;
1216 if (sscanf(line, "%x", &vendor_id) != 1)
1217 goto the_end;
1219 if (!usb_host_read_file(line, sizeof(line), "idProduct",
1220 de->d_name))
1221 goto the_end;
1222 if (sscanf(line, "%x", &product_id) != 1)
1223 goto the_end;
1225 if (!usb_host_read_file(line, sizeof(line), "product",
1226 de->d_name)) {
1227 *product_name = 0;
1228 } else {
1229 if (strlen(line) > 0)
1230 line[strlen(line) - 1] = '\0';
1231 pstrcpy(product_name, sizeof(product_name), line);
1234 if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name))
1235 goto the_end;
1236 if (!strcmp(line, "480\n"))
1237 speed = USB_SPEED_HIGH;
1238 else if (!strcmp(line, "1.5\n"))
1239 speed = USB_SPEED_LOW;
1240 else
1241 speed = USB_SPEED_FULL;
1243 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1244 product_id, product_name, speed);
1245 if (ret)
1246 goto the_end;
1249 the_end:
1250 if (dir)
1251 closedir(dir);
1252 return ret;
1256 * Determine how to access the host's USB devices and call the
1257 * specific support function.
1259 static int usb_host_scan(void *opaque, USBScanFunc *func)
1261 FILE *f = 0;
1262 DIR *dir = 0;
1263 int ret = 0;
1264 const char *fs_type[] = {"unknown", "proc", "dev", "sys"};
1265 char devpath[PATH_MAX];
1267 /* only check the host once */
1268 if (!usb_fs_type) {
1269 f = fopen(USBPROCBUS_PATH "/devices", "r");
1270 if (f) {
1271 /* devices found in /proc/bus/usb/ */
1272 strcpy(devpath, USBPROCBUS_PATH);
1273 usb_fs_type = USB_FS_PROC;
1274 fclose(f);
1275 dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH);
1276 goto found_devices;
1278 /* try additional methods if an access method hasn't been found yet */
1279 f = fopen(USBDEVBUS_PATH "/devices", "r");
1280 if (f) {
1281 /* devices found in /dev/bus/usb/ */
1282 strcpy(devpath, USBDEVBUS_PATH);
1283 usb_fs_type = USB_FS_DEV;
1284 fclose(f);
1285 dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH);
1286 goto found_devices;
1288 dir = opendir(USBSYSBUS_PATH "/devices");
1289 if (dir) {
1290 /* devices found in /dev/bus/usb/ (yes - not a mistake!) */
1291 strcpy(devpath, USBDEVBUS_PATH);
1292 usb_fs_type = USB_FS_SYS;
1293 closedir(dir);
1294 dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH);
1295 goto found_devices;
1297 found_devices:
1298 if (!usb_fs_type) {
1299 term_printf("husb: unable to access USB devices\n");
1300 return -ENOENT;
1303 /* the module setting (used later for opening devices) */
1304 usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
1305 strcpy(usb_host_device_path, devpath);
1306 term_printf("husb: using %s file-system with %s\n", fs_type[usb_fs_type], usb_host_device_path);
1309 switch (usb_fs_type) {
1310 case USB_FS_PROC:
1311 case USB_FS_DEV:
1312 ret = usb_host_scan_dev(opaque, func);
1313 break;
1314 case USB_FS_SYS:
1315 ret = usb_host_scan_sys(opaque, func);
1316 break;
1317 default:
1318 ret = -EINVAL;
1319 break;
1321 return ret;
1324 struct USBAutoFilter {
1325 struct USBAutoFilter *next;
1326 int bus_num;
1327 int addr;
1328 int vendor_id;
1329 int product_id;
1332 static QEMUTimer *usb_auto_timer;
1333 static struct USBAutoFilter *usb_auto_filter;
1335 static int usb_host_auto_scan(void *opaque, int bus_num, int addr,
1336 int class_id, int vendor_id, int product_id,
1337 const char *product_name, int speed)
1339 struct USBAutoFilter *f;
1340 struct USBDevice *dev;
1342 /* Ignore hubs */
1343 if (class_id == 9)
1344 return 0;
1346 for (f = usb_auto_filter; f; f = f->next) {
1347 if (f->bus_num >= 0 && f->bus_num != bus_num)
1348 continue;
1350 if (f->addr >= 0 && f->addr != addr)
1351 continue;
1353 if (f->vendor_id >= 0 && f->vendor_id != vendor_id)
1354 continue;
1356 if (f->product_id >= 0 && f->product_id != product_id)
1357 continue;
1359 /* We got a match */
1361 /* Allredy attached ? */
1362 if (hostdev_find(bus_num, addr))
1363 return 0;
1365 dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
1367 dev = usb_host_device_open_addr(bus_num, addr, product_name);
1368 if (dev)
1369 usb_device_add_dev(dev);
1372 return 0;
1375 static void usb_host_auto_timer(void *unused)
1377 usb_host_scan(NULL, usb_host_auto_scan);
1378 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
1382 * Autoconnect filter
1383 * Format:
1384 * auto:bus:dev[:vid:pid]
1385 * auto:bus.dev[:vid:pid]
1387 * bus - bus number (dec, * means any)
1388 * dev - device number (dec, * means any)
1389 * vid - vendor id (hex, * means any)
1390 * pid - product id (hex, * means any)
1392 * See 'lsusb' output.
1394 static int parse_filter(const char *spec, struct USBAutoFilter *f)
1396 enum { BUS, DEV, VID, PID, DONE };
1397 const char *p = spec;
1398 int i;
1400 f->bus_num = -1;
1401 f->addr = -1;
1402 f->vendor_id = -1;
1403 f->product_id = -1;
1405 for (i = BUS; i < DONE; i++) {
1406 p = strpbrk(p, ":.");
1407 if (!p) break;
1408 p++;
1410 if (*p == '*')
1411 continue;
1413 switch(i) {
1414 case BUS: f->bus_num = strtol(p, NULL, 10); break;
1415 case DEV: f->addr = strtol(p, NULL, 10); break;
1416 case VID: f->vendor_id = strtol(p, NULL, 16); break;
1417 case PID: f->product_id = strtol(p, NULL, 16); break;
1421 if (i < DEV) {
1422 fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
1423 return -1;
1426 return 0;
1429 static int match_filter(const struct USBAutoFilter *f1,
1430 const struct USBAutoFilter *f2)
1432 return f1->bus_num == f2->bus_num &&
1433 f1->addr == f2->addr &&
1434 f1->vendor_id == f2->vendor_id &&
1435 f1->product_id == f2->product_id;
1438 static int usb_host_auto_add(const char *spec)
1440 struct USBAutoFilter filter, *f;
1442 if (parse_filter(spec, &filter) < 0)
1443 return -1;
1445 f = qemu_mallocz(sizeof(*f));
1447 *f = filter;
1449 if (!usb_auto_filter) {
1451 * First entry. Init and start the monitor.
1452 * Right now we're using timer to check for new devices.
1453 * If this turns out to be too expensive we can move that into a
1454 * separate thread.
1456 usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL);
1457 if (!usb_auto_timer) {
1458 fprintf(stderr, "husb: failed to allocate auto scan timer\n");
1459 qemu_free(f);
1460 return -1;
1463 /* Check for new devices every two seconds */
1464 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
1467 dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n",
1468 f->bus_num, f->addr, f->vendor_id, f->product_id);
1470 f->next = usb_auto_filter;
1471 usb_auto_filter = f;
1473 return 0;
1476 static int usb_host_auto_del(const char *spec)
1478 struct USBAutoFilter *pf = usb_auto_filter;
1479 struct USBAutoFilter **prev = &usb_auto_filter;
1480 struct USBAutoFilter filter;
1482 if (parse_filter(spec, &filter) < 0)
1483 return -1;
1485 while (pf) {
1486 if (match_filter(pf, &filter)) {
1487 dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n",
1488 pf->bus_num, pf->addr, pf->vendor_id, pf->product_id);
1490 *prev = pf->next;
1492 if (!usb_auto_filter) {
1493 /* No more filters. Stop scanning. */
1494 qemu_del_timer(usb_auto_timer);
1495 qemu_free_timer(usb_auto_timer);
1498 return 0;
1501 prev = &pf->next;
1502 pf = pf->next;
1505 return -1;
1508 typedef struct FindDeviceState {
1509 int vendor_id;
1510 int product_id;
1511 int bus_num;
1512 int addr;
1513 char product_name[PRODUCT_NAME_SZ];
1514 } FindDeviceState;
1516 static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
1517 int class_id,
1518 int vendor_id, int product_id,
1519 const char *product_name, int speed)
1521 FindDeviceState *s = opaque;
1522 if ((vendor_id == s->vendor_id &&
1523 product_id == s->product_id) ||
1524 (bus_num == s->bus_num &&
1525 addr == s->addr)) {
1526 pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name);
1527 s->bus_num = bus_num;
1528 s->addr = addr;
1529 return 1;
1530 } else {
1531 return 0;
1535 /* the syntax is :
1536 'bus.addr' (decimal numbers) or
1537 'vendor_id:product_id' (hexa numbers) */
1538 static int usb_host_find_device(int *pbus_num, int *paddr,
1539 char *product_name, int product_name_size,
1540 const char *devname)
1542 const char *p;
1543 int ret;
1544 FindDeviceState fs;
1546 p = strchr(devname, '.');
1547 if (p) {
1548 *pbus_num = strtoul(devname, NULL, 0);
1549 *paddr = strtoul(p + 1, NULL, 0);
1550 fs.bus_num = *pbus_num;
1551 fs.addr = *paddr;
1552 ret = usb_host_scan(&fs, usb_host_find_device_scan);
1553 if (ret)
1554 pstrcpy(product_name, product_name_size, fs.product_name);
1555 return 0;
1558 p = strchr(devname, ':');
1559 if (p) {
1560 fs.vendor_id = strtoul(devname, NULL, 16);
1561 fs.product_id = strtoul(p + 1, NULL, 16);
1562 ret = usb_host_scan(&fs, usb_host_find_device_scan);
1563 if (ret) {
1564 *pbus_num = fs.bus_num;
1565 *paddr = fs.addr;
1566 pstrcpy(product_name, product_name_size, fs.product_name);
1567 return 0;
1570 return -1;
1573 /**********************/
1574 /* USB host device info */
1576 struct usb_class_info {
1577 int class;
1578 const char *class_name;
1581 static const struct usb_class_info usb_class_info[] = {
1582 { USB_CLASS_AUDIO, "Audio"},
1583 { USB_CLASS_COMM, "Communication"},
1584 { USB_CLASS_HID, "HID"},
1585 { USB_CLASS_HUB, "Hub" },
1586 { USB_CLASS_PHYSICAL, "Physical" },
1587 { USB_CLASS_PRINTER, "Printer" },
1588 { USB_CLASS_MASS_STORAGE, "Storage" },
1589 { USB_CLASS_CDC_DATA, "Data" },
1590 { USB_CLASS_APP_SPEC, "Application Specific" },
1591 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
1592 { USB_CLASS_STILL_IMAGE, "Still Image" },
1593 { USB_CLASS_CSCID, "Smart Card" },
1594 { USB_CLASS_CONTENT_SEC, "Content Security" },
1595 { -1, NULL }
1598 static const char *usb_class_str(uint8_t class)
1600 const struct usb_class_info *p;
1601 for(p = usb_class_info; p->class != -1; p++) {
1602 if (p->class == class)
1603 break;
1605 return p->class_name;
1608 static void usb_info_device(int bus_num, int addr, int class_id,
1609 int vendor_id, int product_id,
1610 const char *product_name,
1611 int speed)
1613 const char *class_str, *speed_str;
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;
1630 term_printf(" 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 term_printf(" %s:", class_str);
1635 else
1636 term_printf(" Class %02x:", class_id);
1637 term_printf(" USB device %04x:%04x", vendor_id, product_id);
1638 if (product_name[0] != '\0')
1639 term_printf(", %s", product_name);
1640 term_printf("\n");
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)
1649 usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
1650 product_name, speed);
1651 return 0;
1654 static void dec2str(int val, char *str, size_t size)
1656 if (val == -1)
1657 snprintf(str, size, "*");
1658 else
1659 snprintf(str, size, "%d", val);
1662 static void hex2str(int val, char *str, size_t size)
1664 if (val == -1)
1665 snprintf(str, size, "*");
1666 else
1667 snprintf(str, size, "%x", val);
1670 void usb_host_info(void)
1672 struct USBAutoFilter *f;
1674 usb_host_scan(NULL, usb_host_info_device);
1676 if (usb_auto_filter)
1677 term_printf(" 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 term_printf(" Device %s.%s ID %s:%s\n", bus, addr, vid, pid);