2 * Linux host USB redirector
4 * Copyright (c) 2005 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #if defined(__linux__)
28 #include <sys/ioctl.h>
29 #include <linux/compiler.h>
30 #include <linux/usbdevice_fs.h>
31 #include <linux/version.h>
33 /* We redefine it to avoid version problems */
34 struct usb_ctrltransfer {
44 typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
45 int vendor_id, int product_id,
46 const char *product_name, int speed);
47 static int usb_host_find_device(int *pbus_num, int *paddr,
48 char *product_name, int product_name_size,
53 #define USBDEVFS_PATH "/proc/bus/usb"
54 #define PRODUCT_NAME_SZ 32
56 typedef struct USBHostDevice {
61 static void usb_host_handle_reset(USBDevice *dev)
64 USBHostDevice *s = (USBHostDevice *)dev;
65 /* USBDEVFS_RESET, but not the first time as it has already be
66 done by the host OS */
67 ioctl(s->fd, USBDEVFS_RESET);
71 static void usb_host_handle_destroy(USBDevice *dev)
73 USBHostDevice *s = (USBHostDevice *)dev;
80 static int usb_host_handle_control(USBDevice *dev,
87 USBHostDevice *s = (USBHostDevice *)dev;
88 struct usb_ctrltransfer ct;
91 if (request == (DeviceOutRequest | USB_REQ_SET_ADDRESS)) {
92 /* specific SET_ADDRESS support */
96 ct.bRequestType = request >> 8;
97 ct.bRequest = request;
103 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
109 return USB_RET_STALL;
117 static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
119 USBHostDevice *s = (USBHostDevice *)dev;
120 struct usbdevfs_bulktransfer bt;
122 uint8_t devep = p->devep;
124 /* XXX: optimize and handle all data types by looking at the
126 if (p->pid == USB_TOKEN_IN)
132 ret = ioctl(s->fd, USBDEVFS_BULK, &bt);
140 printf("handle_data: errno=%d\n", errno);
142 return USB_RET_STALL;
149 /* XXX: exclude high speed devices or implement EHCI */
150 USBDevice *usb_host_device_open(const char *devname)
152 int fd, interface, ret, i;
154 struct usbdevfs_connectinfo ci;
157 int descr_len, dev_descr_len, config_descr_len, nb_interfaces;
159 char product_name[PRODUCT_NAME_SZ];
161 if (usb_host_find_device(&bus_num, &addr,
162 product_name, sizeof(product_name),
166 snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d",
168 fd = open(buf, O_RDWR);
174 /* read the config description */
175 descr_len = read(fd, descr, sizeof(descr));
176 if (descr_len <= 0) {
177 perror("read descr");
182 dev_descr_len = descr[0];
183 if (dev_descr_len > descr_len)
186 config_descr_len = descr[i];
187 if (i + config_descr_len > descr_len)
189 nb_interfaces = descr[i + 4];
190 if (nb_interfaces != 1) {
191 /* NOTE: currently we grab only one interface */
192 fprintf(stderr, "usb_host: only one interface supported\n");
196 #ifdef USBDEVFS_DISCONNECT
197 /* earlier Linux 2.4 do not support that */
199 struct usbdevfs_ioctl ctrl;
200 ctrl.ioctl_code = USBDEVFS_DISCONNECT;
202 ret = ioctl(fd, USBDEVFS_IOCTL, &ctrl);
203 if (ret < 0 && errno != ENODATA) {
204 perror("USBDEVFS_DISCONNECT");
210 /* XXX: only grab if all interfaces are free */
212 ret = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &interface);
214 if (errno == EBUSY) {
215 fprintf(stderr, "usb_host: device already grabbed\n");
217 perror("USBDEVFS_CLAIMINTERFACE");
224 ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
226 perror("USBDEVFS_CONNECTINFO");
231 printf("host USB device %d.%d grabbed\n", bus_num, addr);
234 dev = qemu_mallocz(sizeof(USBHostDevice));
239 dev->dev.speed = USB_SPEED_LOW;
241 dev->dev.speed = USB_SPEED_HIGH;
242 dev->dev.handle_packet = usb_generic_handle_packet;
244 dev->dev.handle_reset = usb_host_handle_reset;
245 dev->dev.handle_control = usb_host_handle_control;
246 dev->dev.handle_data = usb_host_handle_data;
247 dev->dev.handle_destroy = usb_host_handle_destroy;
249 if (product_name[0] == '\0')
250 snprintf(dev->dev.devname, sizeof(dev->dev.devname),
253 pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
256 return (USBDevice *)dev;
259 static int get_tag_value(char *buf, int buf_size,
260 const char *str, const char *tag,
261 const char *stopchars)
265 p = strstr(str, tag);
272 while (*p != '\0' && !strchr(stopchars, *p)) {
273 if ((q - buf) < (buf_size - 1))
281 static int usb_host_scan(void *opaque, USBScanFunc *func)
286 int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
288 char product_name[512];
290 f = fopen(USBDEVFS_PATH "/devices", "r");
292 term_printf("Could not open %s\n", USBDEVFS_PATH "/devices");
296 bus_num = addr = speed = class_id = product_id = vendor_id = 0;
299 if (fgets(line, sizeof(line), f) == NULL)
301 if (strlen(line) > 0)
302 line[strlen(line) - 1] = '\0';
303 if (line[0] == 'T' && line[1] == ':') {
304 if (device_count && (vendor_id || product_id)) {
305 /* New device. Add the previously discovered device. */
306 ret = func(opaque, bus_num, addr, class_id, vendor_id,
307 product_id, product_name, speed);
311 if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
314 if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
317 if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
319 if (!strcmp(buf, "480"))
320 speed = USB_SPEED_HIGH;
321 else if (!strcmp(buf, "1.5"))
322 speed = USB_SPEED_LOW;
324 speed = USB_SPEED_FULL;
325 product_name[0] = '\0';
330 } else if (line[0] == 'P' && line[1] == ':') {
331 if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
333 vendor_id = strtoul(buf, NULL, 16);
334 if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
336 product_id = strtoul(buf, NULL, 16);
337 } else if (line[0] == 'S' && line[1] == ':') {
338 if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
340 pstrcpy(product_name, sizeof(product_name), buf);
341 } else if (line[0] == 'D' && line[1] == ':') {
342 if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
344 class_id = strtoul(buf, NULL, 16);
348 if (device_count && (vendor_id || product_id)) {
349 /* Add the last device. */
350 ret = func(opaque, bus_num, addr, class_id, vendor_id,
351 product_id, product_name, speed);
358 typedef struct FindDeviceState {
363 char product_name[PRODUCT_NAME_SZ];
366 static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
368 int vendor_id, int product_id,
369 const char *product_name, int speed)
371 FindDeviceState *s = opaque;
372 if ((vendor_id == s->vendor_id &&
373 product_id == s->product_id) ||
374 (bus_num == s->bus_num &&
376 pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name);
377 s->bus_num = bus_num;
386 'bus.addr' (decimal numbers) or
387 'vendor_id:product_id' (hexa numbers) */
388 static int usb_host_find_device(int *pbus_num, int *paddr,
389 char *product_name, int product_name_size,
396 p = strchr(devname, '.');
398 *pbus_num = strtoul(devname, NULL, 0);
399 *paddr = strtoul(p + 1, NULL, 0);
400 fs.bus_num = *pbus_num;
402 ret = usb_host_scan(&fs, usb_host_find_device_scan);
404 pstrcpy(product_name, product_name_size, fs.product_name);
407 p = strchr(devname, ':');
409 fs.vendor_id = strtoul(devname, NULL, 16);
410 fs.product_id = strtoul(p + 1, NULL, 16);
411 ret = usb_host_scan(&fs, usb_host_find_device_scan);
413 *pbus_num = fs.bus_num;
415 pstrcpy(product_name, product_name_size, fs.product_name);
422 /**********************/
423 /* USB host device info */
425 struct usb_class_info {
427 const char *class_name;
430 static const struct usb_class_info usb_class_info[] = {
431 { USB_CLASS_AUDIO, "Audio"},
432 { USB_CLASS_COMM, "Communication"},
433 { USB_CLASS_HID, "HID"},
434 { USB_CLASS_HUB, "Hub" },
435 { USB_CLASS_PHYSICAL, "Physical" },
436 { USB_CLASS_PRINTER, "Printer" },
437 { USB_CLASS_MASS_STORAGE, "Storage" },
438 { USB_CLASS_CDC_DATA, "Data" },
439 { USB_CLASS_APP_SPEC, "Application Specific" },
440 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
441 { USB_CLASS_STILL_IMAGE, "Still Image" },
442 { USB_CLASS_CSCID, "Smart Card" },
443 { USB_CLASS_CONTENT_SEC, "Content Security" },
447 static const char *usb_class_str(uint8_t class)
449 const struct usb_class_info *p;
450 for(p = usb_class_info; p->class != -1; p++) {
451 if (p->class == class)
454 return p->class_name;
457 void usb_info_device(int bus_num, int addr, int class_id,
458 int vendor_id, int product_id,
459 const char *product_name,
462 const char *class_str, *speed_str;
479 term_printf(" Device %d.%d, speed %s Mb/s\n",
480 bus_num, addr, speed_str);
481 class_str = usb_class_str(class_id);
483 term_printf(" %s:", class_str);
485 term_printf(" Class %02x:", class_id);
486 term_printf(" USB device %04x:%04x", vendor_id, product_id);
487 if (product_name[0] != '\0')
488 term_printf(", %s", product_name);
492 static int usb_host_info_device(void *opaque, int bus_num, int addr,
494 int vendor_id, int product_id,
495 const char *product_name,
498 usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
499 product_name, speed);
503 void usb_host_info(void)
505 usb_host_scan(NULL, usb_host_info_device);
510 void usb_host_info(void)
512 term_printf("USB host devices not supported\n");
515 /* XXX: modify configure to compile the right host driver */
516 USBDevice *usb_host_device_open(const char *devname)