sh4/r2d: update pci, usb and kernel management
[qemu/sh4.git] / usb-linux.c
blob334b45d30f99c490eba5439716dec3a3dc82ad84
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 #include <dirent.h>
38 #include <sys/ioctl.h>
39 #include <signal.h>
41 #include <linux/usbdevice_fs.h>
42 #include <linux/version.h>
43 #include "hw/usb.h"
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;
56 struct usb_ctrlrequest {
57 uint8_t bRequestType;
58 uint8_t bRequest;
59 uint16_t wValue;
60 uint16_t wIndex;
61 uint16_t wLength;
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
72 #ifdef DEBUG
73 #define dprintf printf
74 #else
75 #define dprintf(...)
76 #endif
78 #define USBDBG_DEVOPENED "husb: opened %s/devices\n"
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"
86 static char *usb_host_device_path;
88 #define USB_FS_NONE 0
89 #define USB_FS_PROC 1
90 #define USB_FS_DEV 2
91 #define USB_FS_SYS 3
93 static int usb_fs_type;
95 /* endpoint association data */
96 struct endp_data {
97 uint8_t type;
98 uint8_t halted;
101 enum {
102 CTRL_STATE_IDLE = 0,
103 CTRL_STATE_SETUP,
104 CTRL_STATE_DATA,
105 CTRL_STATE_ACK
109 * Control transfer state.
110 * Note that 'buffer' _must_ follow 'req' field because
111 * we need contigious buffer when we submit control URB.
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];
121 typedef struct USBHostDevice {
122 USBDevice dev;
123 int fd;
125 uint8_t descr[1024];
126 int descr_len;
127 int configuration;
128 int ninterfaces;
129 int closing;
131 struct ctrl_struct ctrl;
132 struct endp_data endp_table[MAX_ENDPOINTS];
134 /* Host side address */
135 int bus_num;
136 int addr;
138 struct USBHostDevice *next;
139 } USBHostDevice;
141 static int is_isoc(USBHostDevice *s, int ep)
143 return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO;
146 static int is_halted(USBHostDevice *s, int ep)
148 return s->endp_table[ep - 1].halted;
151 static void clear_halt(USBHostDevice *s, int ep)
153 s->endp_table[ep - 1].halted = 0;
156 static void set_halt(USBHostDevice *s, int ep)
158 s->endp_table[ep - 1].halted = 1;
161 static USBHostDevice *hostdev_list;
163 static void hostdev_link(USBHostDevice *dev)
165 dev->next = hostdev_list;
166 hostdev_list = dev;
169 static void hostdev_unlink(USBHostDevice *dev)
171 USBHostDevice *pdev = hostdev_list;
172 USBHostDevice **prev = &hostdev_list;
174 while (pdev) {
175 if (pdev == dev) {
176 *prev = dev->next;
177 return;
180 prev = &pdev->next;
181 pdev = pdev->next;
185 static USBHostDevice *hostdev_find(int bus_num, int addr)
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;
193 return NULL;
197 * Async URB state.
198 * We always allocate one isoc descriptor even for bulk transfers
199 * to simplify allocation and casts.
201 typedef struct AsyncURB
203 struct usbdevfs_urb urb;
204 struct usbdevfs_iso_packet_desc isocpd;
206 USBPacket *packet;
207 USBHostDevice *hdev;
208 } AsyncURB;
210 static AsyncURB *async_alloc(void)
212 return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB));
215 static void async_free(AsyncURB *aurb)
217 qemu_free(aurb);
220 static void async_complete_ctrl(USBHostDevice *s, USBPacket *p)
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;
230 case CTRL_STATE_ACK:
231 s->ctrl.state = CTRL_STATE_IDLE;
232 p->len = 0;
233 break;
235 default:
236 break;
240 static void async_complete(void *opaque)
242 USBHostDevice *s = opaque;
243 AsyncURB *aurb;
245 while (1) {
246 USBPacket *p;
248 int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
249 if (r < 0) {
250 if (errno == EAGAIN)
251 return;
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;
259 dprintf("husb: async. reap urb failed errno %d\n", errno);
260 return;
263 p = aurb->packet;
265 dprintf("husb: async completed. aurb %p status %d alen %d\n",
266 aurb, aurb->urb.status, aurb->urb.actual_length);
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;
276 case -EPIPE:
277 set_halt(s, p->devep);
278 /* fall through */
279 default:
280 p->len = USB_RET_NAK;
281 break;
284 usb_packet_complete(p);
287 async_free(aurb);
291 static void async_cancel(USBPacket *unused, void *opaque)
293 AsyncURB *aurb = opaque;
294 USBHostDevice *s = aurb->hdev;
296 dprintf("husb: async cancel. aurb %p\n", aurb);
298 /* Mark it as dead (see async_complete above) */
299 aurb->packet = NULL;
301 int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
302 if (r < 0) {
303 dprintf("husb: async. discard urb failed errno %d\n", errno);
307 static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
309 int dev_descr_len, config_descr_len;
310 int interface, nb_interfaces, nb_configurations;
311 int ret, i;
313 if (configuration == 0) /* address state - ignore */
314 return 1;
316 dprintf("husb: claiming interfaces. config %d\n", configuration);
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];
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]);
329 if (dev->descr[i+1] != USB_DT_CONFIG) {
330 i += dev->descr[i];
331 continue;
333 config_descr_len = dev->descr[i];
335 printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration);
337 if (configuration < 0 || configuration == dev->descr[i + 5]) {
338 configuration = dev->descr[i + 5];
339 break;
342 i += config_descr_len;
345 if (i >= dev->descr_len) {
346 fprintf(stderr, "husb: update iface failed. no matching configuration\n");
347 goto fail;
349 nb_interfaces = dev->descr[i + 4];
351 #ifdef USBDEVFS_DISCONNECT
352 /* earlier Linux 2.4 do not support that */
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;
365 #endif
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");
376 fail:
377 return 0;
381 printf("husb: %d interfaces claimed for configuration %d\n",
382 nb_interfaces, configuration);
384 dev->ninterfaces = nb_interfaces;
385 dev->configuration = configuration;
386 return 1;
389 static int usb_host_release_interfaces(USBHostDevice *s)
391 int ret, i;
393 dprintf("husb: releasing interfaces\n");
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;
403 return 1;
406 static void usb_host_handle_reset(USBDevice *dev)
408 USBHostDevice *s = (USBHostDevice *) dev;
410 dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);
412 ioctl(s->fd, USBDEVFS_RESET);
414 usb_host_claim_interfaces(s, s->configuration);
417 static void usb_host_handle_destroy(USBDevice *dev)
419 USBHostDevice *s = (USBHostDevice *)dev;
421 s->closing = 1;
423 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
425 hostdev_unlink(s);
427 async_complete(s);
429 if (s->fd >= 0)
430 close(s->fd);
432 qemu_free(s);
435 static int usb_linux_update_endp_table(USBHostDevice *s);
437 static int usb_host_handle_data(USBHostDevice *s, USBPacket *p)
439 struct usbdevfs_urb *urb;
440 AsyncURB *aurb;
441 int ret;
443 aurb = async_alloc();
444 if (!aurb) {
445 dprintf("husb: async malloc failed\n");
446 return USB_RET_NAK;
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 if (!aurb) {
589 dprintf("husb: async malloc failed\n");
590 return USB_RET_NAK;
592 aurb->hdev = s;
593 aurb->packet = p;
596 * Setup ctrl transfer.
598 * s->ctrl is layed out such that data buffer immediately follows
599 * 'req' struct which is exactly what usbdevfs expects.
601 urb = &aurb->urb;
603 urb->type = USBDEVFS_URB_TYPE_CONTROL;
604 urb->endpoint = p->devep;
606 urb->buffer = &s->ctrl.req;
607 urb->buffer_length = 8 + s->ctrl.len;
609 urb->usercontext = s;
611 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
613 dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
615 if (ret < 0) {
616 dprintf("husb: submit failed. errno %d\n", errno);
617 async_free(aurb);
619 switch(errno) {
620 case ETIMEDOUT:
621 return USB_RET_NAK;
622 case EPIPE:
623 default:
624 return USB_RET_STALL;
628 usb_defer_packet(p, async_cancel, aurb);
629 return USB_RET_ASYNC;
632 static int do_token_setup(USBDevice *dev, USBPacket *p)
634 USBHostDevice *s = (USBHostDevice *) dev;
635 int ret = 0;
637 if (p->len != 8)
638 return USB_RET_STALL;
640 memcpy(&s->ctrl.req, p->data, 8);
641 s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength);
642 s->ctrl.offset = 0;
643 s->ctrl.state = CTRL_STATE_SETUP;
645 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
646 ret = usb_host_handle_control(s, p);
647 if (ret < 0)
648 return ret;
650 if (ret < s->ctrl.len)
651 s->ctrl.len = ret;
652 s->ctrl.state = CTRL_STATE_DATA;
653 } else {
654 if (s->ctrl.len == 0)
655 s->ctrl.state = CTRL_STATE_ACK;
656 else
657 s->ctrl.state = CTRL_STATE_DATA;
660 return ret;
663 static int do_token_in(USBDevice *dev, USBPacket *p)
665 USBHostDevice *s = (USBHostDevice *) dev;
666 int ret = 0;
668 if (p->devep != 0)
669 return usb_host_handle_data(s, p);
671 switch(s->ctrl.state) {
672 case CTRL_STATE_ACK:
673 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
674 ret = usb_host_handle_control(s, p);
675 if (ret == USB_RET_ASYNC)
676 return USB_RET_ASYNC;
678 s->ctrl.state = CTRL_STATE_IDLE;
679 return ret > 0 ? 0 : ret;
682 return 0;
684 case CTRL_STATE_DATA:
685 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
686 int len = s->ctrl.len - s->ctrl.offset;
687 if (len > p->len)
688 len = p->len;
689 memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len);
690 s->ctrl.offset += len;
691 if (s->ctrl.offset >= s->ctrl.len)
692 s->ctrl.state = CTRL_STATE_ACK;
693 return len;
696 s->ctrl.state = CTRL_STATE_IDLE;
697 return USB_RET_STALL;
699 default:
700 return USB_RET_STALL;
704 static int do_token_out(USBDevice *dev, USBPacket *p)
706 USBHostDevice *s = (USBHostDevice *) dev;
708 if (p->devep != 0)
709 return usb_host_handle_data(s, p);
711 switch(s->ctrl.state) {
712 case CTRL_STATE_ACK:
713 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
714 s->ctrl.state = CTRL_STATE_IDLE;
715 /* transfer OK */
716 } else {
717 /* ignore additional output */
719 return 0;
721 case CTRL_STATE_DATA:
722 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
723 int len = s->ctrl.len - s->ctrl.offset;
724 if (len > p->len)
725 len = p->len;
726 memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len);
727 s->ctrl.offset += len;
728 if (s->ctrl.offset >= s->ctrl.len)
729 s->ctrl.state = CTRL_STATE_ACK;
730 return len;
733 s->ctrl.state = CTRL_STATE_IDLE;
734 return USB_RET_STALL;
736 default:
737 return USB_RET_STALL;
742 * Packet handler.
743 * Called by the HC (host controller).
745 * Returns length of the transaction or one of the USB_RET_XXX codes.
747 static int usb_host_handle_packet(USBDevice *s, USBPacket *p)
749 switch(p->pid) {
750 case USB_MSG_ATTACH:
751 s->state = USB_STATE_ATTACHED;
752 return 0;
754 case USB_MSG_DETACH:
755 s->state = USB_STATE_NOTATTACHED;
756 return 0;
758 case USB_MSG_RESET:
759 s->remote_wakeup = 0;
760 s->addr = 0;
761 s->state = USB_STATE_DEFAULT;
762 s->handle_reset(s);
763 return 0;
766 /* Rest of the PIDs must match our address */
767 if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
768 return USB_RET_NODEV;
770 switch (p->pid) {
771 case USB_TOKEN_SETUP:
772 return do_token_setup(s, p);
774 case USB_TOKEN_IN:
775 return do_token_in(s, p);
777 case USB_TOKEN_OUT:
778 return do_token_out(s, p);
780 default:
781 return USB_RET_STALL;
785 /* returns 1 on problem encountered or 0 for success */
786 static int usb_linux_update_endp_table(USBHostDevice *s)
788 uint8_t *descriptors;
789 uint8_t devep, type, configuration, alt_interface;
790 struct usb_ctrltransfer ct;
791 int interface, ret, length, i;
793 ct.bRequestType = USB_DIR_IN;
794 ct.bRequest = USB_REQ_GET_CONFIGURATION;
795 ct.wValue = 0;
796 ct.wIndex = 0;
797 ct.wLength = 1;
798 ct.data = &configuration;
799 ct.timeout = 50;
801 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
802 if (ret < 0) {
803 perror("usb_linux_update_endp_table");
804 return 1;
807 /* in address state */
808 if (configuration == 0)
809 return 1;
811 /* get the desired configuration, interface, and endpoint descriptors
812 * from device description */
813 descriptors = &s->descr[18];
814 length = s->descr_len - 18;
815 i = 0;
817 if (descriptors[i + 1] != USB_DT_CONFIG ||
818 descriptors[i + 5] != configuration) {
819 dprintf("invalid descriptor data - configuration\n");
820 return 1;
822 i += descriptors[i];
824 while (i < length) {
825 if (descriptors[i + 1] != USB_DT_INTERFACE ||
826 (descriptors[i + 1] == USB_DT_INTERFACE &&
827 descriptors[i + 4] == 0)) {
828 i += descriptors[i];
829 continue;
832 interface = descriptors[i + 2];
834 ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
835 ct.bRequest = USB_REQ_GET_INTERFACE;
836 ct.wValue = 0;
837 ct.wIndex = interface;
838 ct.wLength = 1;
839 ct.data = &alt_interface;
840 ct.timeout = 50;
842 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
843 if (ret < 0) {
844 perror("usb_linux_update_endp_table");
845 return 1;
848 /* the current interface descriptor is the active interface
849 * and has endpoints */
850 if (descriptors[i + 3] != alt_interface) {
851 i += descriptors[i];
852 continue;
855 /* advance to the endpoints */
856 while (i < length && descriptors[i +1] != USB_DT_ENDPOINT)
857 i += descriptors[i];
859 if (i >= length)
860 break;
862 while (i < length) {
863 if (descriptors[i + 1] != USB_DT_ENDPOINT)
864 break;
866 devep = descriptors[i + 2];
867 switch (descriptors[i + 3] & 0x3) {
868 case 0x00:
869 type = USBDEVFS_URB_TYPE_CONTROL;
870 break;
871 case 0x01:
872 type = USBDEVFS_URB_TYPE_ISO;
873 break;
874 case 0x02:
875 type = USBDEVFS_URB_TYPE_BULK;
876 break;
877 case 0x03:
878 type = USBDEVFS_URB_TYPE_INTERRUPT;
879 break;
880 default:
881 dprintf("usb_host: malformed endpoint type\n");
882 type = USBDEVFS_URB_TYPE_BULK;
884 s->endp_table[(devep & 0xf) - 1].type = type;
885 s->endp_table[(devep & 0xf) - 1].halted = 0;
887 i += descriptors[i];
890 return 0;
893 static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name)
895 int fd = -1, ret;
896 USBHostDevice *dev = NULL;
897 struct usbdevfs_connectinfo ci;
898 char buf[1024];
900 dev = qemu_mallocz(sizeof(USBHostDevice));
901 if (!dev)
902 goto fail;
904 dev->bus_num = bus_num;
905 dev->addr = addr;
907 printf("husb: open device %d.%d\n", bus_num, addr);
909 if (!usb_host_device_path) {
910 perror("husb: USB Host Device Path not set");
911 goto fail;
913 snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path,
914 bus_num, addr);
915 fd = open(buf, O_RDWR | O_NONBLOCK);
916 if (fd < 0) {
917 perror(buf);
918 goto fail;
920 dprintf("husb: opened %s\n", buf);
922 /* read the device description */
923 dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
924 if (dev->descr_len <= 0) {
925 perror("husb: reading device data failed");
926 goto fail;
929 #ifdef DEBUG
931 int x;
932 printf("=== begin dumping device descriptor data ===\n");
933 for (x = 0; x < dev->descr_len; x++)
934 printf("%02x ", dev->descr[x]);
935 printf("\n=== end dumping device descriptor data ===\n");
937 #endif
939 dev->fd = fd;
942 * Initial configuration is -1 which makes us claim first
943 * available config. We used to start with 1, which does not
944 * always work. I've seen devices where first config starts
945 * with 2.
947 if (!usb_host_claim_interfaces(dev, -1))
948 goto fail;
950 ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
951 if (ret < 0) {
952 perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
953 goto fail;
956 printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
958 ret = usb_linux_update_endp_table(dev);
959 if (ret)
960 goto fail;
962 if (ci.slow)
963 dev->dev.speed = USB_SPEED_LOW;
964 else
965 dev->dev.speed = USB_SPEED_HIGH;
967 dev->dev.handle_packet = usb_host_handle_packet;
968 dev->dev.handle_reset = usb_host_handle_reset;
969 dev->dev.handle_destroy = usb_host_handle_destroy;
971 if (!prod_name || prod_name[0] == '\0')
972 snprintf(dev->dev.devname, sizeof(dev->dev.devname),
973 "host:%d.%d", bus_num, addr);
974 else
975 pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
976 prod_name);
978 /* USB devio uses 'write' flag to check for async completions */
979 qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
981 hostdev_link(dev);
983 return (USBDevice *) dev;
985 fail:
986 if (dev)
987 qemu_free(dev);
989 close(fd);
990 return NULL;
993 static int usb_host_auto_add(const char *spec);
994 static int usb_host_auto_del(const char *spec);
996 USBDevice *usb_host_device_open(const char *devname)
998 int bus_num, addr;
999 char product_name[PRODUCT_NAME_SZ];
1001 if (strstr(devname, "auto:")) {
1002 usb_host_auto_add(devname);
1003 return NULL;
1006 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
1007 devname) < 0)
1008 return NULL;
1010 if (hostdev_find(bus_num, addr)) {
1011 term_printf("husb: host usb device %d.%d is already open\n", bus_num, addr);
1012 return NULL;
1015 return usb_host_device_open_addr(bus_num, addr, product_name);
1018 int usb_host_device_close(const char *devname)
1020 char product_name[PRODUCT_NAME_SZ];
1021 int bus_num, addr;
1022 USBHostDevice *s;
1024 if (strstr(devname, "auto:"))
1025 return usb_host_auto_del(devname);
1027 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
1028 devname) < 0)
1029 return -1;
1031 s = hostdev_find(bus_num, addr);
1032 if (s) {
1033 usb_device_del_addr(0, s->dev.addr);
1034 return 0;
1037 return -1;
1040 static int get_tag_value(char *buf, int buf_size,
1041 const char *str, const char *tag,
1042 const char *stopchars)
1044 const char *p;
1045 char *q;
1046 p = strstr(str, tag);
1047 if (!p)
1048 return -1;
1049 p += strlen(tag);
1050 while (qemu_isspace(*p))
1051 p++;
1052 q = buf;
1053 while (*p != '\0' && !strchr(stopchars, *p)) {
1054 if ((q - buf) < (buf_size - 1))
1055 *q++ = *p;
1056 p++;
1058 *q = '\0';
1059 return q - buf;
1063 * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
1064 * host's USB devices. This is legacy support since many distributions
1065 * are moving to /sys/bus/usb
1067 static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
1069 FILE *f = 0;
1070 char line[1024];
1071 char buf[1024];
1072 int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
1073 char product_name[512];
1074 int ret = 0;
1076 if (!usb_host_device_path) {
1077 perror("husb: USB Host Device Path not set");
1078 goto the_end;
1080 snprintf(line, sizeof(line), "%s/devices", usb_host_device_path);
1081 f = fopen(line, "r");
1082 if (!f) {
1083 perror("husb: cannot open devices file");
1084 goto the_end;
1087 device_count = 0;
1088 bus_num = addr = speed = class_id = product_id = vendor_id = 0;
1089 for(;;) {
1090 if (fgets(line, sizeof(line), f) == NULL)
1091 break;
1092 if (strlen(line) > 0)
1093 line[strlen(line) - 1] = '\0';
1094 if (line[0] == 'T' && line[1] == ':') {
1095 if (device_count && (vendor_id || product_id)) {
1096 /* New device. Add the previously discovered device. */
1097 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1098 product_id, product_name, speed);
1099 if (ret)
1100 goto the_end;
1102 if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
1103 goto fail;
1104 bus_num = atoi(buf);
1105 if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
1106 goto fail;
1107 addr = atoi(buf);
1108 if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
1109 goto fail;
1110 if (!strcmp(buf, "480"))
1111 speed = USB_SPEED_HIGH;
1112 else if (!strcmp(buf, "1.5"))
1113 speed = USB_SPEED_LOW;
1114 else
1115 speed = USB_SPEED_FULL;
1116 product_name[0] = '\0';
1117 class_id = 0xff;
1118 device_count++;
1119 product_id = 0;
1120 vendor_id = 0;
1121 } else if (line[0] == 'P' && line[1] == ':') {
1122 if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
1123 goto fail;
1124 vendor_id = strtoul(buf, NULL, 16);
1125 if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
1126 goto fail;
1127 product_id = strtoul(buf, NULL, 16);
1128 } else if (line[0] == 'S' && line[1] == ':') {
1129 if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
1130 goto fail;
1131 pstrcpy(product_name, sizeof(product_name), buf);
1132 } else if (line[0] == 'D' && line[1] == ':') {
1133 if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
1134 goto fail;
1135 class_id = strtoul(buf, NULL, 16);
1137 fail: ;
1139 if (device_count && (vendor_id || product_id)) {
1140 /* Add the last device. */
1141 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1142 product_id, product_name, speed);
1144 the_end:
1145 if (f)
1146 fclose(f);
1147 return ret;
1151 * Read sys file-system device file
1153 * @line address of buffer to put file contents in
1154 * @line_size size of line
1155 * @device_file path to device file (printf format string)
1156 * @device_name device being opened (inserted into device_file)
1158 * @return 0 failed, 1 succeeded ('line' contains data)
1160 static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name)
1162 FILE *f;
1163 int ret = 0;
1164 char filename[PATH_MAX];
1166 snprintf(filename, PATH_MAX, device_file, device_name);
1167 f = fopen(filename, "r");
1168 if (f) {
1169 fgets(line, line_size, f);
1170 fclose(f);
1171 ret = 1;
1172 } else {
1173 term_printf("husb: could not open %s\n", filename);
1176 return ret;
1180 * Use /sys/bus/usb/devices/ directory to determine host's USB
1181 * devices.
1183 * This code is based on Robert Schiele's original patches posted to
1184 * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
1186 static int usb_host_scan_sys(void *opaque, USBScanFunc *func)
1188 DIR *dir = 0;
1189 char line[1024];
1190 int bus_num, addr, speed, class_id, product_id, vendor_id;
1191 int ret = 0;
1192 char product_name[512];
1193 struct dirent *de;
1195 dir = opendir(USBSYSBUS_PATH "/devices");
1196 if (!dir) {
1197 perror("husb: cannot open devices directory");
1198 goto the_end;
1201 while ((de = readdir(dir))) {
1202 if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
1203 char *tmpstr = de->d_name;
1204 if (!strncmp(de->d_name, "usb", 3))
1205 tmpstr += 3;
1206 bus_num = atoi(tmpstr);
1208 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/devnum", de->d_name))
1209 goto the_end;
1210 if (sscanf(line, "%d", &addr) != 1)
1211 goto the_end;
1213 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/bDeviceClass", de->d_name))
1214 goto the_end;
1215 if (sscanf(line, "%x", &class_id) != 1)
1216 goto the_end;
1218 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/idVendor", de->d_name))
1219 goto the_end;
1220 if (sscanf(line, "%x", &vendor_id) != 1)
1221 goto the_end;
1223 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/idProduct", de->d_name))
1224 goto the_end;
1225 if (sscanf(line, "%x", &product_id) != 1)
1226 goto the_end;
1228 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/product", de->d_name)) {
1229 *product_name = 0;
1230 } else {
1231 if (strlen(line) > 0)
1232 line[strlen(line) - 1] = '\0';
1233 pstrcpy(product_name, sizeof(product_name), line);
1236 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/speed", de->d_name))
1237 goto the_end;
1238 if (!strcmp(line, "480\n"))
1239 speed = USB_SPEED_HIGH;
1240 else if (!strcmp(line, "1.5\n"))
1241 speed = USB_SPEED_LOW;
1242 else
1243 speed = USB_SPEED_FULL;
1245 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1246 product_id, product_name, speed);
1247 if (ret)
1248 goto the_end;
1251 the_end:
1252 if (dir)
1253 closedir(dir);
1254 return ret;
1258 * Determine how to access the host's USB devices and call the
1259 * specific support function.
1261 static int usb_host_scan(void *opaque, USBScanFunc *func)
1263 FILE *f = 0;
1264 DIR *dir = 0;
1265 int ret = 0;
1266 const char *fs_type[] = {"unknown", "proc", "dev", "sys"};
1267 char devpath[PATH_MAX];
1269 /* only check the host once */
1270 if (!usb_fs_type) {
1271 f = fopen(USBPROCBUS_PATH "/devices", "r");
1272 if (f) {
1273 /* devices found in /proc/bus/usb/ */
1274 strcpy(devpath, USBPROCBUS_PATH);
1275 usb_fs_type = USB_FS_PROC;
1276 fclose(f);
1277 dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH);
1278 goto found_devices;
1280 /* try additional methods if an access method hasn't been found yet */
1281 f = fopen(USBDEVBUS_PATH "/devices", "r");
1282 if (f) {
1283 /* devices found in /dev/bus/usb/ */
1284 strcpy(devpath, USBDEVBUS_PATH);
1285 usb_fs_type = USB_FS_DEV;
1286 fclose(f);
1287 dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH);
1288 goto found_devices;
1290 dir = opendir(USBSYSBUS_PATH "/devices");
1291 if (dir) {
1292 /* devices found in /dev/bus/usb/ (yes - not a mistake!) */
1293 strcpy(devpath, USBDEVBUS_PATH);
1294 usb_fs_type = USB_FS_SYS;
1295 closedir(dir);
1296 dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH);
1297 goto found_devices;
1299 found_devices:
1300 if (!usb_fs_type) {
1301 term_printf("husb: unable to access USB devices\n");
1302 return -ENOENT;
1305 /* the module setting (used later for opening devices) */
1306 usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
1307 if (usb_host_device_path) {
1308 strcpy(usb_host_device_path, devpath);
1309 term_printf("husb: using %s file-system with %s\n", fs_type[usb_fs_type], usb_host_device_path);
1310 } else {
1311 /* out of memory? */
1312 perror("husb: unable to allocate memory for device path");
1313 return -ENOMEM;
1317 switch (usb_fs_type) {
1318 case USB_FS_PROC:
1319 case USB_FS_DEV:
1320 ret = usb_host_scan_dev(opaque, func);
1321 break;
1322 case USB_FS_SYS:
1323 ret = usb_host_scan_sys(opaque, func);
1324 break;
1325 default:
1326 ret = -EINVAL;
1327 break;
1329 return ret;
1332 struct USBAutoFilter {
1333 struct USBAutoFilter *next;
1334 int bus_num;
1335 int addr;
1336 int vendor_id;
1337 int product_id;
1340 static QEMUTimer *usb_auto_timer;
1341 static struct USBAutoFilter *usb_auto_filter;
1343 static int usb_host_auto_scan(void *opaque, int bus_num, int addr,
1344 int class_id, int vendor_id, int product_id,
1345 const char *product_name, int speed)
1347 struct USBAutoFilter *f;
1348 struct USBDevice *dev;
1350 /* Ignore hubs */
1351 if (class_id == 9)
1352 return 0;
1354 for (f = usb_auto_filter; f; f = f->next) {
1355 if (f->bus_num >= 0 && f->bus_num != bus_num)
1356 continue;
1358 if (f->addr >= 0 && f->addr != addr)
1359 continue;
1361 if (f->vendor_id >= 0 && f->vendor_id != vendor_id)
1362 continue;
1364 if (f->product_id >= 0 && f->product_id != product_id)
1365 continue;
1367 /* We got a match */
1369 /* Allredy attached ? */
1370 if (hostdev_find(bus_num, addr))
1371 return 0;
1373 dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
1375 dev = usb_host_device_open_addr(bus_num, addr, product_name);
1376 if (dev)
1377 usb_device_add_dev(dev);
1380 return 0;
1383 static void usb_host_auto_timer(void *unused)
1385 usb_host_scan(NULL, usb_host_auto_scan);
1386 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
1390 * Autoconnect filter
1391 * Format:
1392 * auto:bus:dev[:vid:pid]
1393 * auto:bus.dev[:vid:pid]
1395 * bus - bus number (dec, * means any)
1396 * dev - device number (dec, * means any)
1397 * vid - vendor id (hex, * means any)
1398 * pid - product id (hex, * means any)
1400 * See 'lsusb' output.
1402 static int parse_filter(const char *spec, struct USBAutoFilter *f)
1404 enum { BUS, DEV, VID, PID, DONE };
1405 const char *p = spec;
1406 int i;
1408 f->bus_num = -1;
1409 f->addr = -1;
1410 f->vendor_id = -1;
1411 f->product_id = -1;
1413 for (i = BUS; i < DONE; i++) {
1414 p = strpbrk(p, ":.");
1415 if (!p) break;
1416 p++;
1418 if (*p == '*')
1419 continue;
1421 switch(i) {
1422 case BUS: f->bus_num = strtol(p, NULL, 10); break;
1423 case DEV: f->addr = strtol(p, NULL, 10); break;
1424 case VID: f->vendor_id = strtol(p, NULL, 16); break;
1425 case PID: f->product_id = strtol(p, NULL, 16); break;
1429 if (i < DEV) {
1430 fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
1431 return -1;
1434 return 0;
1437 static int match_filter(const struct USBAutoFilter *f1,
1438 const struct USBAutoFilter *f2)
1440 return f1->bus_num == f2->bus_num &&
1441 f1->addr == f2->addr &&
1442 f1->vendor_id == f2->vendor_id &&
1443 f1->product_id == f2->product_id;
1446 static int usb_host_auto_add(const char *spec)
1448 struct USBAutoFilter filter, *f;
1450 if (parse_filter(spec, &filter) < 0)
1451 return -1;
1453 f = qemu_mallocz(sizeof(*f));
1454 if (!f) {
1455 fprintf(stderr, "husb: failed to allocate auto filter\n");
1456 return -1;
1459 *f = filter;
1461 if (!usb_auto_filter) {
1463 * First entry. Init and start the monitor.
1464 * Right now we're using timer to check for new devices.
1465 * If this turns out to be too expensive we can move that into a
1466 * separate thread.
1468 usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL);
1469 if (!usb_auto_timer) {
1470 fprintf(stderr, "husb: failed to allocate auto scan timer\n");
1471 qemu_free(f);
1472 return -1;
1475 /* Check for new devices every two seconds */
1476 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
1479 dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n",
1480 f->bus_num, f->addr, f->vendor_id, f->product_id);
1482 f->next = usb_auto_filter;
1483 usb_auto_filter = f;
1485 return 0;
1488 static int usb_host_auto_del(const char *spec)
1490 struct USBAutoFilter *pf = usb_auto_filter;
1491 struct USBAutoFilter **prev = &usb_auto_filter;
1492 struct USBAutoFilter filter;
1494 if (parse_filter(spec, &filter) < 0)
1495 return -1;
1497 while (pf) {
1498 if (match_filter(pf, &filter)) {
1499 dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n",
1500 pf->bus_num, pf->addr, pf->vendor_id, pf->product_id);
1502 *prev = pf->next;
1504 if (!usb_auto_filter) {
1505 /* No more filters. Stop scanning. */
1506 qemu_del_timer(usb_auto_timer);
1507 qemu_free_timer(usb_auto_timer);
1510 return 0;
1513 prev = &pf->next;
1514 pf = pf->next;
1517 return -1;
1520 typedef struct FindDeviceState {
1521 int vendor_id;
1522 int product_id;
1523 int bus_num;
1524 int addr;
1525 char product_name[PRODUCT_NAME_SZ];
1526 } FindDeviceState;
1528 static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
1529 int class_id,
1530 int vendor_id, int product_id,
1531 const char *product_name, int speed)
1533 FindDeviceState *s = opaque;
1534 if ((vendor_id == s->vendor_id &&
1535 product_id == s->product_id) ||
1536 (bus_num == s->bus_num &&
1537 addr == s->addr)) {
1538 pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name);
1539 s->bus_num = bus_num;
1540 s->addr = addr;
1541 return 1;
1542 } else {
1543 return 0;
1547 /* the syntax is :
1548 'bus.addr' (decimal numbers) or
1549 'vendor_id:product_id' (hexa numbers) */
1550 static int usb_host_find_device(int *pbus_num, int *paddr,
1551 char *product_name, int product_name_size,
1552 const char *devname)
1554 const char *p;
1555 int ret;
1556 FindDeviceState fs;
1558 p = strchr(devname, '.');
1559 if (p) {
1560 *pbus_num = strtoul(devname, NULL, 0);
1561 *paddr = strtoul(p + 1, NULL, 0);
1562 fs.bus_num = *pbus_num;
1563 fs.addr = *paddr;
1564 ret = usb_host_scan(&fs, usb_host_find_device_scan);
1565 if (ret)
1566 pstrcpy(product_name, product_name_size, fs.product_name);
1567 return 0;
1570 p = strchr(devname, ':');
1571 if (p) {
1572 fs.vendor_id = strtoul(devname, NULL, 16);
1573 fs.product_id = strtoul(p + 1, NULL, 16);
1574 ret = usb_host_scan(&fs, usb_host_find_device_scan);
1575 if (ret) {
1576 *pbus_num = fs.bus_num;
1577 *paddr = fs.addr;
1578 pstrcpy(product_name, product_name_size, fs.product_name);
1579 return 0;
1582 return -1;
1585 /**********************/
1586 /* USB host device info */
1588 struct usb_class_info {
1589 int class;
1590 const char *class_name;
1593 static const struct usb_class_info usb_class_info[] = {
1594 { USB_CLASS_AUDIO, "Audio"},
1595 { USB_CLASS_COMM, "Communication"},
1596 { USB_CLASS_HID, "HID"},
1597 { USB_CLASS_HUB, "Hub" },
1598 { USB_CLASS_PHYSICAL, "Physical" },
1599 { USB_CLASS_PRINTER, "Printer" },
1600 { USB_CLASS_MASS_STORAGE, "Storage" },
1601 { USB_CLASS_CDC_DATA, "Data" },
1602 { USB_CLASS_APP_SPEC, "Application Specific" },
1603 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
1604 { USB_CLASS_STILL_IMAGE, "Still Image" },
1605 { USB_CLASS_CSCID, "Smart Card" },
1606 { USB_CLASS_CONTENT_SEC, "Content Security" },
1607 { -1, NULL }
1610 static const char *usb_class_str(uint8_t class)
1612 const struct usb_class_info *p;
1613 for(p = usb_class_info; p->class != -1; p++) {
1614 if (p->class == class)
1615 break;
1617 return p->class_name;
1620 static void usb_info_device(int bus_num, int addr, int class_id,
1621 int vendor_id, int product_id,
1622 const char *product_name,
1623 int speed)
1625 const char *class_str, *speed_str;
1627 switch(speed) {
1628 case USB_SPEED_LOW:
1629 speed_str = "1.5";
1630 break;
1631 case USB_SPEED_FULL:
1632 speed_str = "12";
1633 break;
1634 case USB_SPEED_HIGH:
1635 speed_str = "480";
1636 break;
1637 default:
1638 speed_str = "?";
1639 break;
1642 term_printf(" Device %d.%d, speed %s Mb/s\n",
1643 bus_num, addr, speed_str);
1644 class_str = usb_class_str(class_id);
1645 if (class_str)
1646 term_printf(" %s:", class_str);
1647 else
1648 term_printf(" Class %02x:", class_id);
1649 term_printf(" USB device %04x:%04x", vendor_id, product_id);
1650 if (product_name[0] != '\0')
1651 term_printf(", %s", product_name);
1652 term_printf("\n");
1655 static int usb_host_info_device(void *opaque, int bus_num, int addr,
1656 int class_id,
1657 int vendor_id, int product_id,
1658 const char *product_name,
1659 int speed)
1661 usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
1662 product_name, speed);
1663 return 0;
1666 static void dec2str(int val, char *str, size_t size)
1668 if (val == -1)
1669 snprintf(str, size, "*");
1670 else
1671 snprintf(str, size, "%d", val);
1674 static void hex2str(int val, char *str, size_t size)
1676 if (val == -1)
1677 snprintf(str, size, "*");
1678 else
1679 snprintf(str, size, "%x", val);
1682 void usb_host_info(void)
1684 struct USBAutoFilter *f;
1686 usb_host_scan(NULL, usb_host_info_device);
1688 if (usb_auto_filter)
1689 term_printf(" Auto filters:\n");
1690 for (f = usb_auto_filter; f; f = f->next) {
1691 char bus[10], addr[10], vid[10], pid[10];
1692 dec2str(f->bus_num, bus, sizeof(bus));
1693 dec2str(f->addr, addr, sizeof(addr));
1694 hex2str(f->vendor_id, vid, sizeof(vid));
1695 hex2str(f->product_id, pid, sizeof(pid));
1696 term_printf(" Device %s.%s ID %s:%s\n", bus, addr, vid, pid);