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 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29 #include "qemu-common.h"
30 #include "qemu-timer.h"
33 #if defined(__linux__)
35 #include <sys/ioctl.h>
38 #include <linux/usbdevice_fs.h>
39 #include <linux/version.h>
42 /* We redefine it to avoid version problems */
43 struct usb_ctrltransfer {
53 struct usb_ctrlrequest {
61 typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
62 int vendor_id, int product_id,
63 const char *product_name, int speed);
64 static int usb_host_find_device(int *pbus_num, int *paddr,
65 char *product_name, int product_name_size,
70 #define dprintf printf
75 #define USBDEVFS_PATH "/proc/bus/usb"
76 #define PRODUCT_NAME_SZ 32
77 #define MAX_ENDPOINTS 16
79 /* endpoint association data */
93 * Control transfer state.
94 * Note that 'buffer' _must_ follow 'req' field because
95 * we need contigious buffer when we submit control URB.
101 struct usb_ctrlrequest req;
102 uint8_t buffer[1024];
105 typedef struct USBHostDevice {
115 struct ctrl_struct ctrl;
116 struct endp_data endp_table[MAX_ENDPOINTS];
118 /* Host side address */
122 struct USBHostDevice *next;
125 static int is_isoc(USBHostDevice *s, int ep)
127 return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO;
130 static int is_halted(USBHostDevice *s, int ep)
132 return s->endp_table[ep - 1].halted;
135 static void clear_halt(USBHostDevice *s, int ep)
137 s->endp_table[ep - 1].halted = 0;
140 static void set_halt(USBHostDevice *s, int ep)
142 s->endp_table[ep - 1].halted = 1;
145 static USBHostDevice *hostdev_list;
147 static void hostdev_link(USBHostDevice *dev)
149 dev->next = hostdev_list;
153 static void hostdev_unlink(USBHostDevice *dev)
155 USBHostDevice *pdev = hostdev_list;
156 USBHostDevice **prev = &hostdev_list;
169 static USBHostDevice *hostdev_find(int bus_num, int addr)
171 USBHostDevice *s = hostdev_list;
173 if (s->bus_num == bus_num && s->addr == addr)
182 * We always allocate one isoc descriptor even for bulk transfers
183 * to simplify allocation and casts.
185 typedef struct AsyncURB
187 struct usbdevfs_urb urb;
188 struct usbdevfs_iso_packet_desc isocpd;
194 static AsyncURB *async_alloc(void)
196 return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB));
199 static void async_free(AsyncURB *aurb)
204 static void async_complete_ctrl(USBHostDevice *s, USBPacket *p)
206 switch(s->ctrl.state) {
207 case CTRL_STATE_SETUP:
208 if (p->len < s->ctrl.len)
209 s->ctrl.len = p->len;
210 s->ctrl.state = CTRL_STATE_DATA;
215 s->ctrl.state = CTRL_STATE_IDLE;
224 static void async_complete(void *opaque)
226 USBHostDevice *s = opaque;
232 int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
237 if (errno == ENODEV && !s->closing) {
238 printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr);
239 usb_device_del_addr(0, s->dev.addr);
243 dprintf("husb: async. reap urb failed errno %d\n", errno);
249 dprintf("husb: async completed. aurb %p status %d alen %d\n",
250 aurb, aurb->urb.status, aurb->urb.actual_length);
253 switch (aurb->urb.status) {
255 p->len = aurb->urb.actual_length;
256 if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL)
257 async_complete_ctrl(s, p);
261 set_halt(s, p->devep);
264 p->len = USB_RET_NAK;
268 usb_packet_complete(p);
275 static void async_cancel(USBPacket *unused, void *opaque)
277 AsyncURB *aurb = opaque;
278 USBHostDevice *s = aurb->hdev;
280 dprintf("husb: async cancel. aurb %p\n", aurb);
282 /* Mark it as dead (see async_complete above) */
285 int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
287 dprintf("husb: async. discard urb failed errno %d\n", errno);
291 static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
293 int dev_descr_len, config_descr_len;
294 int interface, nb_interfaces, nb_configurations;
297 if (configuration == 0) /* address state - ignore */
300 dprintf("husb: claiming interfaces. config %d\n", configuration);
303 dev_descr_len = dev->descr[0];
304 if (dev_descr_len > dev->descr_len)
306 nb_configurations = dev->descr[17];
309 while (i < dev->descr_len) {
310 dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
311 dev->descr[i], dev->descr[i+1]);
313 if (dev->descr[i+1] != USB_DT_CONFIG) {
317 config_descr_len = dev->descr[i];
319 printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration);
321 if (configuration < 0 || configuration == dev->descr[i + 5]) {
322 configuration = dev->descr[i + 5];
326 i += config_descr_len;
329 if (i >= dev->descr_len) {
330 fprintf(stderr, "husb: update iface failed. no matching configuration\n");
333 nb_interfaces = dev->descr[i + 4];
335 #ifdef USBDEVFS_DISCONNECT
336 /* earlier Linux 2.4 do not support that */
338 struct usbdevfs_ioctl ctrl;
339 for (interface = 0; interface < nb_interfaces; interface++) {
340 ctrl.ioctl_code = USBDEVFS_DISCONNECT;
341 ctrl.ifno = interface;
342 ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
343 if (ret < 0 && errno != ENODATA) {
344 perror("USBDEVFS_DISCONNECT");
351 /* XXX: only grab if all interfaces are free */
352 for (interface = 0; interface < nb_interfaces; interface++) {
353 ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
355 if (errno == EBUSY) {
356 printf("husb: update iface. device already grabbed\n");
358 perror("husb: failed to claim interface");
365 printf("husb: %d interfaces claimed for configuration %d\n",
366 nb_interfaces, configuration);
368 dev->ninterfaces = nb_interfaces;
369 dev->configuration = configuration;
373 static int usb_host_release_interfaces(USBHostDevice *s)
377 dprintf("husb: releasing interfaces\n");
379 for (i = 0; i < s->ninterfaces; i++) {
380 ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i);
382 perror("husb: failed to release interface");
390 static void usb_host_handle_reset(USBDevice *dev)
392 USBHostDevice *s = (USBHostDevice *) dev;
394 dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);
396 ioctl(s->fd, USBDEVFS_RESET);
398 usb_host_claim_interfaces(s, s->configuration);
401 static void usb_host_handle_destroy(USBDevice *dev)
403 USBHostDevice *s = (USBHostDevice *)dev;
407 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
419 static int usb_linux_update_endp_table(USBHostDevice *s);
421 static int usb_host_handle_data(USBHostDevice *s, USBPacket *p)
423 struct usbdevfs_urb *urb;
427 aurb = async_alloc();
429 dprintf("husb: async malloc failed\n");
437 if (p->pid == USB_TOKEN_IN)
438 urb->endpoint = p->devep | 0x80;
440 urb->endpoint = p->devep;
442 if (is_halted(s, p->devep)) {
443 ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint);
445 dprintf("husb: failed to clear halt. ep 0x%x errno %d\n",
446 urb->endpoint, errno);
449 clear_halt(s, p->devep);
452 urb->buffer = p->data;
453 urb->buffer_length = p->len;
455 if (is_isoc(s, p->devep)) {
456 /* Setup ISOC transfer */
457 urb->type = USBDEVFS_URB_TYPE_ISO;
458 urb->flags = USBDEVFS_URB_ISO_ASAP;
459 urb->number_of_packets = 1;
460 urb->iso_frame_desc[0].length = p->len;
462 /* Setup bulk transfer */
463 urb->type = USBDEVFS_URB_TYPE_BULK;
466 urb->usercontext = s;
468 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
470 dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb);
473 dprintf("husb: submit failed. errno %d\n", errno);
481 return USB_RET_STALL;
485 usb_defer_packet(p, async_cancel, aurb);
486 return USB_RET_ASYNC;
489 static int ctrl_error(void)
491 if (errno == ETIMEDOUT)
494 return USB_RET_STALL;
497 static int usb_host_set_address(USBHostDevice *s, int addr)
499 dprintf("husb: ctrl set addr %u\n", addr);
504 static int usb_host_set_config(USBHostDevice *s, int config)
506 usb_host_release_interfaces(s);
508 int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
510 dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
515 usb_host_claim_interfaces(s, config);
519 static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
521 struct usbdevfs_setinterface si;
524 si.interface = iface;
526 ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
528 dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n",
529 iface, alt, ret, errno);
534 usb_linux_update_endp_table(s);
538 static int usb_host_handle_control(USBHostDevice *s, USBPacket *p)
540 struct usbdevfs_urb *urb;
542 int ret, value, index;
545 * Process certain standard device requests.
546 * These are infrequent and are processed synchronously.
548 value = le16_to_cpu(s->ctrl.req.wValue);
549 index = le16_to_cpu(s->ctrl.req.wIndex);
551 dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
552 s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index,
555 if (s->ctrl.req.bRequestType == 0) {
556 switch (s->ctrl.req.bRequest) {
557 case USB_REQ_SET_ADDRESS:
558 return usb_host_set_address(s, value);
560 case USB_REQ_SET_CONFIGURATION:
561 return usb_host_set_config(s, value & 0xff);
565 if (s->ctrl.req.bRequestType == 1 &&
566 s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE)
567 return usb_host_set_interface(s, index, value);
569 /* The rest are asynchronous */
571 aurb = async_alloc();
573 dprintf("husb: async malloc failed\n");
580 * Setup ctrl transfer.
582 * s->ctrl is layed out such that data buffer immediately follows
583 * 'req' struct which is exactly what usbdevfs expects.
587 urb->type = USBDEVFS_URB_TYPE_CONTROL;
588 urb->endpoint = p->devep;
590 urb->buffer = &s->ctrl.req;
591 urb->buffer_length = 8 + s->ctrl.len;
593 urb->usercontext = s;
595 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
597 dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
600 dprintf("husb: submit failed. errno %d\n", errno);
608 return USB_RET_STALL;
612 usb_defer_packet(p, async_cancel, aurb);
613 return USB_RET_ASYNC;
616 static int do_token_setup(USBDevice *dev, USBPacket *p)
618 USBHostDevice *s = (USBHostDevice *) dev;
622 return USB_RET_STALL;
624 memcpy(&s->ctrl.req, p->data, 8);
625 s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength);
627 s->ctrl.state = CTRL_STATE_SETUP;
629 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
630 ret = usb_host_handle_control(s, p);
634 if (ret < s->ctrl.len)
636 s->ctrl.state = CTRL_STATE_DATA;
638 if (s->ctrl.len == 0)
639 s->ctrl.state = CTRL_STATE_ACK;
641 s->ctrl.state = CTRL_STATE_DATA;
647 static int do_token_in(USBDevice *dev, USBPacket *p)
649 USBHostDevice *s = (USBHostDevice *) dev;
653 return usb_host_handle_data(s, p);
655 switch(s->ctrl.state) {
657 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
658 ret = usb_host_handle_control(s, p);
659 if (ret == USB_RET_ASYNC)
660 return USB_RET_ASYNC;
662 s->ctrl.state = CTRL_STATE_IDLE;
663 return ret > 0 ? 0 : ret;
668 case CTRL_STATE_DATA:
669 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
670 int len = s->ctrl.len - s->ctrl.offset;
673 memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len);
674 s->ctrl.offset += len;
675 if (s->ctrl.offset >= s->ctrl.len)
676 s->ctrl.state = CTRL_STATE_ACK;
680 s->ctrl.state = CTRL_STATE_IDLE;
681 return USB_RET_STALL;
684 return USB_RET_STALL;
688 static int do_token_out(USBDevice *dev, USBPacket *p)
690 USBHostDevice *s = (USBHostDevice *) dev;
693 return usb_host_handle_data(s, p);
695 switch(s->ctrl.state) {
697 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
698 s->ctrl.state = CTRL_STATE_IDLE;
701 /* ignore additional output */
705 case CTRL_STATE_DATA:
706 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
707 int len = s->ctrl.len - s->ctrl.offset;
710 memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len);
711 s->ctrl.offset += len;
712 if (s->ctrl.offset >= s->ctrl.len)
713 s->ctrl.state = CTRL_STATE_ACK;
717 s->ctrl.state = CTRL_STATE_IDLE;
718 return USB_RET_STALL;
721 return USB_RET_STALL;
727 * Called by the HC (host controller).
729 * Returns length of the transaction or one of the USB_RET_XXX codes.
731 static int usb_host_handle_packet(USBDevice *s, USBPacket *p)
735 s->state = USB_STATE_ATTACHED;
739 s->state = USB_STATE_NOTATTACHED;
743 s->remote_wakeup = 0;
745 s->state = USB_STATE_DEFAULT;
750 /* Rest of the PIDs must match our address */
751 if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
752 return USB_RET_NODEV;
755 case USB_TOKEN_SETUP:
756 return do_token_setup(s, p);
759 return do_token_in(s, p);
762 return do_token_out(s, p);
765 return USB_RET_STALL;
769 /* returns 1 on problem encountered or 0 for success */
770 static int usb_linux_update_endp_table(USBHostDevice *s)
772 uint8_t *descriptors;
773 uint8_t devep, type, configuration, alt_interface;
774 struct usbdevfs_ctrltransfer ct;
775 int interface, ret, length, i;
777 ct.bRequestType = USB_DIR_IN;
778 ct.bRequest = USB_REQ_GET_CONFIGURATION;
782 ct.data = &configuration;
785 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
787 perror("usb_linux_update_endp_table");
791 /* in address state */
792 if (configuration == 0)
795 /* get the desired configuration, interface, and endpoint descriptors
796 * from device description */
797 descriptors = &s->descr[18];
798 length = s->descr_len - 18;
801 if (descriptors[i + 1] != USB_DT_CONFIG ||
802 descriptors[i + 5] != configuration) {
803 dprintf("invalid descriptor data - configuration\n");
809 if (descriptors[i + 1] != USB_DT_INTERFACE ||
810 (descriptors[i + 1] == USB_DT_INTERFACE &&
811 descriptors[i + 4] == 0)) {
816 interface = descriptors[i + 2];
818 ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
819 ct.bRequest = USB_REQ_GET_INTERFACE;
821 ct.wIndex = interface;
823 ct.data = &alt_interface;
826 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
828 perror("usb_linux_update_endp_table");
832 /* the current interface descriptor is the active interface
833 * and has endpoints */
834 if (descriptors[i + 3] != alt_interface) {
839 /* advance to the endpoints */
840 while (i < length && descriptors[i +1] != USB_DT_ENDPOINT)
847 if (descriptors[i + 1] != USB_DT_ENDPOINT)
850 devep = descriptors[i + 2];
851 switch (descriptors[i + 3] & 0x3) {
853 type = USBDEVFS_URB_TYPE_CONTROL;
856 type = USBDEVFS_URB_TYPE_ISO;
859 type = USBDEVFS_URB_TYPE_BULK;
862 type = USBDEVFS_URB_TYPE_INTERRUPT;
865 dprintf("usb_host: malformed endpoint type\n");
866 type = USBDEVFS_URB_TYPE_BULK;
868 s->endp_table[(devep & 0xf) - 1].type = type;
869 s->endp_table[(devep & 0xf) - 1].halted = 0;
877 static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name)
880 USBHostDevice *dev = NULL;
881 struct usbdevfs_connectinfo ci;
884 dev = qemu_mallocz(sizeof(USBHostDevice));
888 dev->bus_num = bus_num;
891 printf("husb: open device %d.%d\n", bus_num, addr);
893 snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d",
895 fd = open(buf, O_RDWR | O_NONBLOCK);
901 /* read the device description */
902 dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
903 if (dev->descr_len <= 0) {
904 perror("husb: reading device data failed");
911 printf("=== begin dumping device descriptor data ===\n");
912 for (x = 0; x < dev->descr_len; x++)
913 printf("%02x ", dev->descr[x]);
914 printf("\n=== end dumping device descriptor data ===\n");
921 * Initial configuration is -1 which makes us claim first
922 * available config. We used to start with 1, which does not
923 * always work. I've seen devices where first config starts
926 if (!usb_host_claim_interfaces(dev, -1))
929 ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
931 perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
935 printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
937 ret = usb_linux_update_endp_table(dev);
942 dev->dev.speed = USB_SPEED_LOW;
944 dev->dev.speed = USB_SPEED_HIGH;
946 dev->dev.handle_packet = usb_host_handle_packet;
947 dev->dev.handle_reset = usb_host_handle_reset;
948 dev->dev.handle_destroy = usb_host_handle_destroy;
950 if (!prod_name || prod_name[0] == '\0')
951 snprintf(dev->dev.devname, sizeof(dev->dev.devname),
952 "host:%d.%d", bus_num, addr);
954 pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
957 /* USB devio uses 'write' flag to check for async completions */
958 qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
962 return (USBDevice *) dev;
972 static int usb_host_auto_add(const char *spec);
973 static int usb_host_auto_del(const char *spec);
975 USBDevice *usb_host_device_open(const char *devname)
978 char product_name[PRODUCT_NAME_SZ];
980 if (strstr(devname, "auto:")) {
981 usb_host_auto_add(devname);
985 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
989 if (hostdev_find(bus_num, addr)) {
990 term_printf("husb: host usb device %d.%d is already open\n", bus_num, addr);
994 return usb_host_device_open_addr(bus_num, addr, product_name);
997 int usb_host_device_close(const char *devname)
999 char product_name[PRODUCT_NAME_SZ];
1003 if (strstr(devname, "auto:"))
1004 return usb_host_auto_del(devname);
1006 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
1010 s = hostdev_find(bus_num, addr);
1012 usb_device_del_addr(0, s->dev.addr);
1019 static int get_tag_value(char *buf, int buf_size,
1020 const char *str, const char *tag,
1021 const char *stopchars)
1025 p = strstr(str, tag);
1032 while (*p != '\0' && !strchr(stopchars, *p)) {
1033 if ((q - buf) < (buf_size - 1))
1041 static int usb_host_scan(void *opaque, USBScanFunc *func)
1046 int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
1048 char product_name[512];
1050 f = fopen(USBDEVFS_PATH "/devices", "r");
1052 term_printf("husb: could not open %s\n", USBDEVFS_PATH "/devices");
1056 bus_num = addr = speed = class_id = product_id = vendor_id = 0;
1059 if (fgets(line, sizeof(line), f) == NULL)
1061 if (strlen(line) > 0)
1062 line[strlen(line) - 1] = '\0';
1063 if (line[0] == 'T' && line[1] == ':') {
1064 if (device_count && (vendor_id || product_id)) {
1065 /* New device. Add the previously discovered device. */
1066 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1067 product_id, product_name, speed);
1071 if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
1073 bus_num = atoi(buf);
1074 if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
1077 if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
1079 if (!strcmp(buf, "480"))
1080 speed = USB_SPEED_HIGH;
1081 else if (!strcmp(buf, "1.5"))
1082 speed = USB_SPEED_LOW;
1084 speed = USB_SPEED_FULL;
1085 product_name[0] = '\0';
1090 } else if (line[0] == 'P' && line[1] == ':') {
1091 if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
1093 vendor_id = strtoul(buf, NULL, 16);
1094 if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
1096 product_id = strtoul(buf, NULL, 16);
1097 } else if (line[0] == 'S' && line[1] == ':') {
1098 if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
1100 pstrcpy(product_name, sizeof(product_name), buf);
1101 } else if (line[0] == 'D' && line[1] == ':') {
1102 if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
1104 class_id = strtoul(buf, NULL, 16);
1108 if (device_count && (vendor_id || product_id)) {
1109 /* Add the last device. */
1110 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1111 product_id, product_name, speed);
1118 struct USBAutoFilter {
1119 struct USBAutoFilter *next;
1126 static QEMUTimer *usb_auto_timer;
1127 static struct USBAutoFilter *usb_auto_filter;
1129 static int usb_host_auto_scan(void *opaque, int bus_num, int addr,
1130 int class_id, int vendor_id, int product_id,
1131 const char *product_name, int speed)
1133 struct USBAutoFilter *f;
1134 struct USBDevice *dev;
1140 for (f = usb_auto_filter; f; f = f->next) {
1141 if (f->bus_num >= 0 && f->bus_num != bus_num)
1144 if (f->addr >= 0 && f->addr != addr)
1147 if (f->vendor_id >= 0 && f->vendor_id != vendor_id)
1150 if (f->product_id >= 0 && f->product_id != product_id)
1153 /* We got a match */
1155 /* Allredy attached ? */
1156 if (hostdev_find(bus_num, addr))
1159 dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
1161 dev = usb_host_device_open_addr(bus_num, addr, product_name);
1163 usb_device_add_dev(dev);
1169 static void usb_host_auto_timer(void *unused)
1171 usb_host_scan(NULL, usb_host_auto_scan);
1172 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
1176 * Autoconnect filter
1178 * auto:bus:dev[:vid:pid]
1179 * auto:bus.dev[:vid:pid]
1181 * bus - bus number (dec, * means any)
1182 * dev - device number (dec, * means any)
1183 * vid - vendor id (hex, * means any)
1184 * pid - product id (hex, * means any)
1186 * See 'lsusb' output.
1188 static int parse_filter(const char *spec, struct USBAutoFilter *f)
1190 enum { BUS, DEV, VID, PID, DONE };
1191 const char *p = spec;
1199 for (i = BUS; i < DONE; i++) {
1200 p = strpbrk(p, ":.");
1208 case BUS: f->bus_num = strtol(p, NULL, 10); break;
1209 case DEV: f->addr = strtol(p, NULL, 10); break;
1210 case VID: f->vendor_id = strtol(p, NULL, 16); break;
1211 case PID: f->product_id = strtol(p, NULL, 16); break;
1216 fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
1223 static int match_filter(const struct USBAutoFilter *f1,
1224 const struct USBAutoFilter *f2)
1226 return f1->bus_num == f2->bus_num &&
1227 f1->addr == f2->addr &&
1228 f1->vendor_id == f2->vendor_id &&
1229 f1->product_id == f2->product_id;
1232 static int usb_host_auto_add(const char *spec)
1234 struct USBAutoFilter filter, *f;
1236 if (parse_filter(spec, &filter) < 0)
1239 f = qemu_mallocz(sizeof(*f));
1241 fprintf(stderr, "husb: failed to allocate auto filter\n");
1247 if (!usb_auto_filter) {
1249 * First entry. Init and start the monitor.
1250 * Right now we're using timer to check for new devices.
1251 * If this turns out to be too expensive we can move that into a
1254 usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL);
1255 if (!usb_auto_timer) {
1256 fprintf(stderr, "husb: failed to allocate auto scan timer\n");
1261 /* Check for new devices every two seconds */
1262 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
1265 dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n",
1266 f->bus_num, f->addr, f->vendor_id, f->product_id);
1268 f->next = usb_auto_filter;
1269 usb_auto_filter = f;
1274 static int usb_host_auto_del(const char *spec)
1276 struct USBAutoFilter *pf = usb_auto_filter;
1277 struct USBAutoFilter **prev = &usb_auto_filter;
1278 struct USBAutoFilter filter;
1280 if (parse_filter(spec, &filter) < 0)
1284 if (match_filter(pf, &filter)) {
1285 dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n",
1286 pf->bus_num, pf->addr, pf->vendor_id, pf->product_id);
1290 if (!usb_auto_filter) {
1291 /* No more filters. Stop scanning. */
1292 qemu_del_timer(usb_auto_timer);
1293 qemu_free_timer(usb_auto_timer);
1306 typedef struct FindDeviceState {
1311 char product_name[PRODUCT_NAME_SZ];
1314 static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
1316 int vendor_id, int product_id,
1317 const char *product_name, int speed)
1319 FindDeviceState *s = opaque;
1320 if ((vendor_id == s->vendor_id &&
1321 product_id == s->product_id) ||
1322 (bus_num == s->bus_num &&
1324 pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name);
1325 s->bus_num = bus_num;
1334 'bus.addr' (decimal numbers) or
1335 'vendor_id:product_id' (hexa numbers) */
1336 static int usb_host_find_device(int *pbus_num, int *paddr,
1337 char *product_name, int product_name_size,
1338 const char *devname)
1344 p = strchr(devname, '.');
1346 *pbus_num = strtoul(devname, NULL, 0);
1347 *paddr = strtoul(p + 1, NULL, 0);
1348 fs.bus_num = *pbus_num;
1350 ret = usb_host_scan(&fs, usb_host_find_device_scan);
1352 pstrcpy(product_name, product_name_size, fs.product_name);
1356 p = strchr(devname, ':');
1358 fs.vendor_id = strtoul(devname, NULL, 16);
1359 fs.product_id = strtoul(p + 1, NULL, 16);
1360 ret = usb_host_scan(&fs, usb_host_find_device_scan);
1362 *pbus_num = fs.bus_num;
1364 pstrcpy(product_name, product_name_size, fs.product_name);
1371 /**********************/
1372 /* USB host device info */
1374 struct usb_class_info {
1376 const char *class_name;
1379 static const struct usb_class_info usb_class_info[] = {
1380 { USB_CLASS_AUDIO, "Audio"},
1381 { USB_CLASS_COMM, "Communication"},
1382 { USB_CLASS_HID, "HID"},
1383 { USB_CLASS_HUB, "Hub" },
1384 { USB_CLASS_PHYSICAL, "Physical" },
1385 { USB_CLASS_PRINTER, "Printer" },
1386 { USB_CLASS_MASS_STORAGE, "Storage" },
1387 { USB_CLASS_CDC_DATA, "Data" },
1388 { USB_CLASS_APP_SPEC, "Application Specific" },
1389 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
1390 { USB_CLASS_STILL_IMAGE, "Still Image" },
1391 { USB_CLASS_CSCID, "Smart Card" },
1392 { USB_CLASS_CONTENT_SEC, "Content Security" },
1396 static const char *usb_class_str(uint8_t class)
1398 const struct usb_class_info *p;
1399 for(p = usb_class_info; p->class != -1; p++) {
1400 if (p->class == class)
1403 return p->class_name;
1406 static void usb_info_device(int bus_num, int addr, int class_id,
1407 int vendor_id, int product_id,
1408 const char *product_name,
1411 const char *class_str, *speed_str;
1417 case USB_SPEED_FULL:
1420 case USB_SPEED_HIGH:
1428 term_printf(" Device %d.%d, speed %s Mb/s\n",
1429 bus_num, addr, speed_str);
1430 class_str = usb_class_str(class_id);
1432 term_printf(" %s:", class_str);
1434 term_printf(" Class %02x:", class_id);
1435 term_printf(" USB device %04x:%04x", vendor_id, product_id);
1436 if (product_name[0] != '\0')
1437 term_printf(", %s", product_name);
1441 static int usb_host_info_device(void *opaque, int bus_num, int addr,
1443 int vendor_id, int product_id,
1444 const char *product_name,
1447 usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
1448 product_name, speed);
1452 static void dec2str(int val, char *str)
1457 sprintf(str, "%d", val);
1460 static void hex2str(int val, char *str)
1465 sprintf(str, "%x", val);
1468 void usb_host_info(void)
1470 struct USBAutoFilter *f;
1472 usb_host_scan(NULL, usb_host_info_device);
1474 if (usb_auto_filter)
1475 term_printf(" Auto filters:\n");
1476 for (f = usb_auto_filter; f; f = f->next) {
1477 char bus[10], addr[10], vid[10], pid[10];
1478 dec2str(f->bus_num, bus);
1479 dec2str(f->addr, addr);
1480 hex2str(f->vendor_id, vid);
1481 hex2str(f->product_id, pid);
1482 term_printf(" Device %s.%s ID %s:%s\n", bus, addr, vid, pid);
1490 void usb_host_info(void)
1492 term_printf("USB host devices not supported\n");
1495 /* XXX: modify configure to compile the right host driver */
1496 USBDevice *usb_host_device_open(const char *devname)
1501 int usb_host_device_close(const char *devname)