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/*
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---|---|
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* Linux host USB redirector
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*
|
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* Copyright (c) 2005 Fabrice Bellard
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*
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* Copyright (c) 2008 Max Krasnyansky
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* Support for host device auto connect & disconnect
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* Major rewrite to support fully async operation
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*
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* Copyright 2008 TJ <linux@tjworld.net>
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* 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
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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25 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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32 |
|
33 |
#include "qemu-common.h" |
34 |
#include "qemu-timer.h" |
35 |
#include "monitor.h" |
36 |
#include "sysemu.h" |
37 |
|
38 |
#include <dirent.h> |
39 |
#include <sys/ioctl.h> |
40 |
#include <signal.h> |
41 |
|
42 |
#include <linux/usbdevice_fs.h> |
43 |
#include <linux/version.h> |
44 |
#include "hw/usb.h" |
45 |
|
46 |
/* We redefine it to avoid version problems */
|
47 |
struct usb_ctrltransfer {
|
48 |
uint8_t bRequestType; |
49 |
uint8_t bRequest; |
50 |
uint16_t wValue; |
51 |
uint16_t wIndex; |
52 |
uint16_t wLength; |
53 |
uint32_t timeout; |
54 |
void *data;
|
55 |
}; |
56 |
|
57 |
struct usb_ctrlrequest {
|
58 |
uint8_t bRequestType; |
59 |
uint8_t bRequest; |
60 |
uint16_t wValue; |
61 |
uint16_t wIndex; |
62 |
uint16_t wLength; |
63 |
}; |
64 |
|
65 |
typedef int USBScanFunc(void *opaque, int bus_num, int addr, int devpath, |
66 |
int class_id, int vendor_id, int product_id, |
67 |
const char *product_name, int speed); |
68 |
|
69 |
//#define DEBUG
|
70 |
|
71 |
#ifdef DEBUG
|
72 |
#define DPRINTF printf
|
73 |
#else
|
74 |
#define DPRINTF(...)
|
75 |
#endif
|
76 |
|
77 |
#define USBDBG_DEVOPENED "husb: opened %s/devices\n" |
78 |
|
79 |
#define USBPROCBUS_PATH "/proc/bus/usb" |
80 |
#define PRODUCT_NAME_SZ 32 |
81 |
#define MAX_ENDPOINTS 16 |
82 |
#define USBDEVBUS_PATH "/dev/bus/usb" |
83 |
#define USBSYSBUS_PATH "/sys/bus/usb" |
84 |
|
85 |
static char *usb_host_device_path; |
86 |
|
87 |
#define USB_FS_NONE 0 |
88 |
#define USB_FS_PROC 1 |
89 |
#define USB_FS_DEV 2 |
90 |
#define USB_FS_SYS 3 |
91 |
|
92 |
static int usb_fs_type; |
93 |
|
94 |
/* endpoint association data */
|
95 |
struct endp_data {
|
96 |
uint8_t type; |
97 |
uint8_t halted; |
98 |
}; |
99 |
|
100 |
enum {
|
101 |
CTRL_STATE_IDLE = 0,
|
102 |
CTRL_STATE_SETUP, |
103 |
CTRL_STATE_DATA, |
104 |
CTRL_STATE_ACK |
105 |
}; |
106 |
|
107 |
/*
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* Control transfer state.
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109 |
* Note that 'buffer' _must_ follow 'req' field because
|
110 |
* we need contigious buffer when we submit control URB.
|
111 |
*/
|
112 |
struct ctrl_struct {
|
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uint16_t len; |
114 |
uint16_t offset; |
115 |
uint8_t state; |
116 |
struct usb_ctrlrequest req;
|
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uint8_t buffer[8192];
|
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}; |
119 |
|
120 |
struct USBAutoFilter {
|
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uint32_t bus_num; |
122 |
uint32_t addr; |
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uint32_t vendor_id; |
124 |
uint32_t product_id; |
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}; |
126 |
|
127 |
typedef struct USBHostDevice { |
128 |
USBDevice dev; |
129 |
int fd;
|
130 |
|
131 |
uint8_t descr[1024];
|
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int descr_len;
|
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int configuration;
|
134 |
int ninterfaces;
|
135 |
int closing;
|
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Notifier exit; |
137 |
|
138 |
struct ctrl_struct ctrl;
|
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struct endp_data endp_table[MAX_ENDPOINTS];
|
140 |
|
141 |
/* Host side address */
|
142 |
int bus_num;
|
143 |
int addr;
|
144 |
int devpath;
|
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struct USBAutoFilter match;
|
146 |
|
147 |
QTAILQ_ENTRY(USBHostDevice) next; |
148 |
} USBHostDevice; |
149 |
|
150 |
static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs);
|
151 |
|
152 |
static int usb_host_close(USBHostDevice *dev); |
153 |
static int parse_filter(const char *spec, struct USBAutoFilter *f); |
154 |
static void usb_host_auto_check(void *unused); |
155 |
|
156 |
static int is_isoc(USBHostDevice *s, int ep) |
157 |
{ |
158 |
return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; |
159 |
} |
160 |
|
161 |
static int is_halted(USBHostDevice *s, int ep) |
162 |
{ |
163 |
return s->endp_table[ep - 1].halted; |
164 |
} |
165 |
|
166 |
static void clear_halt(USBHostDevice *s, int ep) |
167 |
{ |
168 |
s->endp_table[ep - 1].halted = 0; |
169 |
} |
170 |
|
171 |
static void set_halt(USBHostDevice *s, int ep) |
172 |
{ |
173 |
s->endp_table[ep - 1].halted = 1; |
174 |
} |
175 |
|
176 |
/*
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177 |
* Async URB state.
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178 |
* We always allocate one isoc descriptor even for bulk transfers
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179 |
* to simplify allocation and casts.
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180 |
*/
|
181 |
typedef struct AsyncURB |
182 |
{ |
183 |
struct usbdevfs_urb urb;
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184 |
struct usbdevfs_iso_packet_desc isocpd;
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185 |
|
186 |
USBPacket *packet; |
187 |
USBHostDevice *hdev; |
188 |
} AsyncURB; |
189 |
|
190 |
static AsyncURB *async_alloc(void) |
191 |
{ |
192 |
return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); |
193 |
} |
194 |
|
195 |
static void async_free(AsyncURB *aurb) |
196 |
{ |
197 |
qemu_free(aurb); |
198 |
} |
199 |
|
200 |
static void async_complete_ctrl(USBHostDevice *s, USBPacket *p) |
201 |
{ |
202 |
switch(s->ctrl.state) {
|
203 |
case CTRL_STATE_SETUP:
|
204 |
if (p->len < s->ctrl.len)
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205 |
s->ctrl.len = p->len; |
206 |
s->ctrl.state = CTRL_STATE_DATA; |
207 |
p->len = 8;
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208 |
break;
|
209 |
|
210 |
case CTRL_STATE_ACK:
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211 |
s->ctrl.state = CTRL_STATE_IDLE; |
212 |
p->len = 0;
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213 |
break;
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214 |
|
215 |
default:
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216 |
break;
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217 |
} |
218 |
} |
219 |
|
220 |
static void async_complete(void *opaque) |
221 |
{ |
222 |
USBHostDevice *s = opaque; |
223 |
AsyncURB *aurb; |
224 |
|
225 |
while (1) { |
226 |
USBPacket *p; |
227 |
|
228 |
int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
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229 |
if (r < 0) { |
230 |
if (errno == EAGAIN) {
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231 |
return;
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232 |
} |
233 |
if (errno == ENODEV && !s->closing) {
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234 |
printf("husb: device %d.%d disconnected\n",
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235 |
s->bus_num, s->addr); |
236 |
usb_host_close(s); |
237 |
usb_host_auto_check(NULL);
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238 |
return;
|
239 |
} |
240 |
|
241 |
DPRINTF("husb: async. reap urb failed errno %d\n", errno);
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242 |
return;
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243 |
} |
244 |
|
245 |
p = aurb->packet; |
246 |
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247 |
DPRINTF("husb: async completed. aurb %p status %d alen %d\n",
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248 |
aurb, aurb->urb.status, aurb->urb.actual_length); |
249 |
|
250 |
if (p) {
|
251 |
switch (aurb->urb.status) {
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252 |
case 0: |
253 |
p->len = aurb->urb.actual_length; |
254 |
if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) {
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255 |
async_complete_ctrl(s, p); |
256 |
} |
257 |
break;
|
258 |
|
259 |
case -EPIPE:
|
260 |
set_halt(s, p->devep); |
261 |
p->len = USB_RET_STALL; |
262 |
break;
|
263 |
|
264 |
default:
|
265 |
p->len = USB_RET_NAK; |
266 |
break;
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267 |
} |
268 |
|
269 |
usb_packet_complete(p); |
270 |
} |
271 |
|
272 |
async_free(aurb); |
273 |
} |
274 |
} |
275 |
|
276 |
static void async_cancel(USBPacket *unused, void *opaque) |
277 |
{ |
278 |
AsyncURB *aurb = opaque; |
279 |
USBHostDevice *s = aurb->hdev; |
280 |
|
281 |
DPRINTF("husb: async cancel. aurb %p\n", aurb);
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282 |
|
283 |
/* Mark it as dead (see async_complete above) */
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aurb->packet = NULL;
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285 |
|
286 |
int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
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287 |
if (r < 0) { |
288 |
DPRINTF("husb: async. discard urb failed errno %d\n", errno);
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289 |
} |
290 |
} |
291 |
|
292 |
static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) |
293 |
{ |
294 |
int dev_descr_len, config_descr_len;
|
295 |
int interface, nb_interfaces;
|
296 |
int ret, i;
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297 |
|
298 |
if (configuration == 0) /* address state - ignore */ |
299 |
return 1; |
300 |
|
301 |
DPRINTF("husb: claiming interfaces. config %d\n", configuration);
|
302 |
|
303 |
i = 0;
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304 |
dev_descr_len = dev->descr[0];
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305 |
if (dev_descr_len > dev->descr_len) {
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306 |
goto fail;
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307 |
} |
308 |
|
309 |
i += dev_descr_len; |
310 |
while (i < dev->descr_len) {
|
311 |
DPRINTF("husb: i is %d, descr_len is %d, dl %d, dt %d\n",
|
312 |
i, dev->descr_len, |
313 |
dev->descr[i], dev->descr[i+1]);
|
314 |
|
315 |
if (dev->descr[i+1] != USB_DT_CONFIG) { |
316 |
i += dev->descr[i]; |
317 |
continue;
|
318 |
} |
319 |
config_descr_len = dev->descr[i]; |
320 |
|
321 |
printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); |
322 |
|
323 |
if (configuration < 0 || configuration == dev->descr[i + 5]) { |
324 |
configuration = dev->descr[i + 5];
|
325 |
break;
|
326 |
} |
327 |
|
328 |
i += config_descr_len; |
329 |
} |
330 |
|
331 |
if (i >= dev->descr_len) {
|
332 |
fprintf(stderr, |
333 |
"husb: update iface failed. no matching configuration\n");
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334 |
goto fail;
|
335 |
} |
336 |
nb_interfaces = dev->descr[i + 4];
|
337 |
|
338 |
#ifdef USBDEVFS_DISCONNECT
|
339 |
/* earlier Linux 2.4 do not support that */
|
340 |
{ |
341 |
struct usbdevfs_ioctl ctrl;
|
342 |
for (interface = 0; interface < nb_interfaces; interface++) { |
343 |
ctrl.ioctl_code = USBDEVFS_DISCONNECT; |
344 |
ctrl.ifno = interface; |
345 |
ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); |
346 |
if (ret < 0 && errno != ENODATA) { |
347 |
perror("USBDEVFS_DISCONNECT");
|
348 |
goto fail;
|
349 |
} |
350 |
} |
351 |
} |
352 |
#endif
|
353 |
|
354 |
/* XXX: only grab if all interfaces are free */
|
355 |
for (interface = 0; interface < nb_interfaces; interface++) { |
356 |
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); |
357 |
if (ret < 0) { |
358 |
if (errno == EBUSY) {
|
359 |
printf("husb: update iface. device already grabbed\n");
|
360 |
} else {
|
361 |
perror("husb: failed to claim interface");
|
362 |
} |
363 |
fail:
|
364 |
return 0; |
365 |
} |
366 |
} |
367 |
|
368 |
printf("husb: %d interfaces claimed for configuration %d\n",
|
369 |
nb_interfaces, configuration); |
370 |
|
371 |
dev->ninterfaces = nb_interfaces; |
372 |
dev->configuration = configuration; |
373 |
return 1; |
374 |
} |
375 |
|
376 |
static int usb_host_release_interfaces(USBHostDevice *s) |
377 |
{ |
378 |
int ret, i;
|
379 |
|
380 |
DPRINTF("husb: releasing interfaces\n");
|
381 |
|
382 |
for (i = 0; i < s->ninterfaces; i++) { |
383 |
ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); |
384 |
if (ret < 0) { |
385 |
perror("husb: failed to release interface");
|
386 |
return 0; |
387 |
} |
388 |
} |
389 |
|
390 |
return 1; |
391 |
} |
392 |
|
393 |
static void usb_host_handle_reset(USBDevice *dev) |
394 |
{ |
395 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
396 |
|
397 |
DPRINTF("husb: reset device %u.%u\n", s->bus_num, s->addr);
|
398 |
|
399 |
ioctl(s->fd, USBDEVFS_RESET); |
400 |
|
401 |
usb_host_claim_interfaces(s, s->configuration); |
402 |
} |
403 |
|
404 |
static void usb_host_handle_destroy(USBDevice *dev) |
405 |
{ |
406 |
USBHostDevice *s = (USBHostDevice *)dev; |
407 |
|
408 |
usb_host_close(s); |
409 |
QTAILQ_REMOVE(&hostdevs, s, next); |
410 |
qemu_remove_exit_notifier(&s->exit); |
411 |
} |
412 |
|
413 |
static int usb_linux_update_endp_table(USBHostDevice *s); |
414 |
|
415 |
static int usb_host_handle_data(USBHostDevice *s, USBPacket *p) |
416 |
{ |
417 |
struct usbdevfs_urb *urb;
|
418 |
AsyncURB *aurb; |
419 |
int ret;
|
420 |
|
421 |
aurb = async_alloc(); |
422 |
aurb->hdev = s; |
423 |
aurb->packet = p; |
424 |
|
425 |
urb = &aurb->urb; |
426 |
|
427 |
if (p->pid == USB_TOKEN_IN) {
|
428 |
urb->endpoint = p->devep | 0x80;
|
429 |
} else {
|
430 |
urb->endpoint = p->devep; |
431 |
} |
432 |
|
433 |
if (is_halted(s, p->devep)) {
|
434 |
ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint); |
435 |
if (ret < 0) { |
436 |
DPRINTF("husb: failed to clear halt. ep 0x%x errno %d\n",
|
437 |
urb->endpoint, errno); |
438 |
return USB_RET_NAK;
|
439 |
} |
440 |
clear_halt(s, p->devep); |
441 |
} |
442 |
|
443 |
urb->buffer = p->data; |
444 |
urb->buffer_length = p->len; |
445 |
|
446 |
if (is_isoc(s, p->devep)) {
|
447 |
/* Setup ISOC transfer */
|
448 |
urb->type = USBDEVFS_URB_TYPE_ISO; |
449 |
urb->flags = USBDEVFS_URB_ISO_ASAP; |
450 |
urb->number_of_packets = 1;
|
451 |
urb->iso_frame_desc[0].length = p->len;
|
452 |
} else {
|
453 |
/* Setup bulk transfer */
|
454 |
urb->type = USBDEVFS_URB_TYPE_BULK; |
455 |
} |
456 |
|
457 |
urb->usercontext = s; |
458 |
|
459 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
460 |
|
461 |
DPRINTF("husb: data submit. ep 0x%x len %u aurb %p\n",
|
462 |
urb->endpoint, p->len, aurb); |
463 |
|
464 |
if (ret < 0) { |
465 |
DPRINTF("husb: submit failed. errno %d\n", errno);
|
466 |
async_free(aurb); |
467 |
|
468 |
switch(errno) {
|
469 |
case ETIMEDOUT:
|
470 |
return USB_RET_NAK;
|
471 |
case EPIPE:
|
472 |
default:
|
473 |
return USB_RET_STALL;
|
474 |
} |
475 |
} |
476 |
|
477 |
usb_defer_packet(p, async_cancel, aurb); |
478 |
return USB_RET_ASYNC;
|
479 |
} |
480 |
|
481 |
static int ctrl_error(void) |
482 |
{ |
483 |
if (errno == ETIMEDOUT) {
|
484 |
return USB_RET_NAK;
|
485 |
} else {
|
486 |
return USB_RET_STALL;
|
487 |
} |
488 |
} |
489 |
|
490 |
static int usb_host_set_address(USBHostDevice *s, int addr) |
491 |
{ |
492 |
DPRINTF("husb: ctrl set addr %u\n", addr);
|
493 |
s->dev.addr = addr; |
494 |
return 0; |
495 |
} |
496 |
|
497 |
static int usb_host_set_config(USBHostDevice *s, int config) |
498 |
{ |
499 |
usb_host_release_interfaces(s); |
500 |
|
501 |
int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
|
502 |
|
503 |
DPRINTF("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
|
504 |
|
505 |
if (ret < 0) { |
506 |
return ctrl_error();
|
507 |
} |
508 |
usb_host_claim_interfaces(s, config); |
509 |
return 0; |
510 |
} |
511 |
|
512 |
static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) |
513 |
{ |
514 |
struct usbdevfs_setinterface si;
|
515 |
int ret;
|
516 |
|
517 |
si.interface = iface; |
518 |
si.altsetting = alt; |
519 |
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); |
520 |
|
521 |
DPRINTF("husb: ctrl set iface %d altset %d ret %d errno %d\n",
|
522 |
iface, alt, ret, errno); |
523 |
|
524 |
if (ret < 0) { |
525 |
return ctrl_error();
|
526 |
} |
527 |
usb_linux_update_endp_table(s); |
528 |
return 0; |
529 |
} |
530 |
|
531 |
static int usb_host_handle_control(USBHostDevice *s, USBPacket *p) |
532 |
{ |
533 |
struct usbdevfs_urb *urb;
|
534 |
AsyncURB *aurb; |
535 |
int ret, value, index;
|
536 |
int buffer_len;
|
537 |
|
538 |
/*
|
539 |
* Process certain standard device requests.
|
540 |
* These are infrequent and are processed synchronously.
|
541 |
*/
|
542 |
value = le16_to_cpu(s->ctrl.req.wValue); |
543 |
index = le16_to_cpu(s->ctrl.req.wIndex); |
544 |
|
545 |
DPRINTF("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
|
546 |
s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, |
547 |
s->ctrl.len); |
548 |
|
549 |
if (s->ctrl.req.bRequestType == 0) { |
550 |
switch (s->ctrl.req.bRequest) {
|
551 |
case USB_REQ_SET_ADDRESS:
|
552 |
return usb_host_set_address(s, value);
|
553 |
|
554 |
case USB_REQ_SET_CONFIGURATION:
|
555 |
return usb_host_set_config(s, value & 0xff); |
556 |
} |
557 |
} |
558 |
|
559 |
if (s->ctrl.req.bRequestType == 1 && |
560 |
s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) { |
561 |
return usb_host_set_interface(s, index, value);
|
562 |
} |
563 |
|
564 |
/* The rest are asynchronous */
|
565 |
|
566 |
buffer_len = 8 + s->ctrl.len;
|
567 |
if (buffer_len > sizeof(s->ctrl.buffer)) { |
568 |
fprintf(stderr, "husb: ctrl buffer too small (%u > %zu)\n",
|
569 |
buffer_len, sizeof(s->ctrl.buffer));
|
570 |
return USB_RET_STALL;
|
571 |
} |
572 |
|
573 |
aurb = async_alloc(); |
574 |
aurb->hdev = s; |
575 |
aurb->packet = p; |
576 |
|
577 |
/*
|
578 |
* Setup ctrl transfer.
|
579 |
*
|
580 |
* s->ctrl is layed out such that data buffer immediately follows
|
581 |
* 'req' struct which is exactly what usbdevfs expects.
|
582 |
*/
|
583 |
urb = &aurb->urb; |
584 |
|
585 |
urb->type = USBDEVFS_URB_TYPE_CONTROL; |
586 |
urb->endpoint = p->devep; |
587 |
|
588 |
urb->buffer = &s->ctrl.req; |
589 |
urb->buffer_length = buffer_len; |
590 |
|
591 |
urb->usercontext = s; |
592 |
|
593 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
594 |
|
595 |
DPRINTF("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
|
596 |
|
597 |
if (ret < 0) { |
598 |
DPRINTF("husb: submit failed. errno %d\n", errno);
|
599 |
async_free(aurb); |
600 |
|
601 |
switch(errno) {
|
602 |
case ETIMEDOUT:
|
603 |
return USB_RET_NAK;
|
604 |
case EPIPE:
|
605 |
default:
|
606 |
return USB_RET_STALL;
|
607 |
} |
608 |
} |
609 |
|
610 |
usb_defer_packet(p, async_cancel, aurb); |
611 |
return USB_RET_ASYNC;
|
612 |
} |
613 |
|
614 |
static int do_token_setup(USBDevice *dev, USBPacket *p) |
615 |
{ |
616 |
USBHostDevice *s = (USBHostDevice *) dev; |
617 |
int ret = 0; |
618 |
|
619 |
if (p->len != 8) { |
620 |
return USB_RET_STALL;
|
621 |
} |
622 |
|
623 |
memcpy(&s->ctrl.req, p->data, 8);
|
624 |
s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength); |
625 |
s->ctrl.offset = 0;
|
626 |
s->ctrl.state = CTRL_STATE_SETUP; |
627 |
|
628 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
629 |
ret = usb_host_handle_control(s, p); |
630 |
if (ret < 0) { |
631 |
return ret;
|
632 |
} |
633 |
|
634 |
if (ret < s->ctrl.len) {
|
635 |
s->ctrl.len = ret; |
636 |
} |
637 |
s->ctrl.state = CTRL_STATE_DATA; |
638 |
} else {
|
639 |
if (s->ctrl.len == 0) { |
640 |
s->ctrl.state = CTRL_STATE_ACK; |
641 |
} else {
|
642 |
s->ctrl.state = CTRL_STATE_DATA; |
643 |
} |
644 |
} |
645 |
|
646 |
return ret;
|
647 |
} |
648 |
|
649 |
static int do_token_in(USBDevice *dev, USBPacket *p) |
650 |
{ |
651 |
USBHostDevice *s = (USBHostDevice *) dev; |
652 |
int ret = 0; |
653 |
|
654 |
if (p->devep != 0) { |
655 |
return usb_host_handle_data(s, p);
|
656 |
} |
657 |
|
658 |
switch(s->ctrl.state) {
|
659 |
case CTRL_STATE_ACK:
|
660 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
661 |
ret = usb_host_handle_control(s, p); |
662 |
if (ret == USB_RET_ASYNC) {
|
663 |
return USB_RET_ASYNC;
|
664 |
} |
665 |
s->ctrl.state = CTRL_STATE_IDLE; |
666 |
return ret > 0 ? 0 : ret; |
667 |
} |
668 |
|
669 |
return 0; |
670 |
|
671 |
case CTRL_STATE_DATA:
|
672 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
673 |
int len = s->ctrl.len - s->ctrl.offset;
|
674 |
if (len > p->len) {
|
675 |
len = p->len; |
676 |
} |
677 |
memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len); |
678 |
s->ctrl.offset += len; |
679 |
if (s->ctrl.offset >= s->ctrl.len) {
|
680 |
s->ctrl.state = CTRL_STATE_ACK; |
681 |
} |
682 |
return len;
|
683 |
} |
684 |
|
685 |
s->ctrl.state = CTRL_STATE_IDLE; |
686 |
return USB_RET_STALL;
|
687 |
|
688 |
default:
|
689 |
return USB_RET_STALL;
|
690 |
} |
691 |
} |
692 |
|
693 |
static int do_token_out(USBDevice *dev, USBPacket *p) |
694 |
{ |
695 |
USBHostDevice *s = (USBHostDevice *) dev; |
696 |
|
697 |
if (p->devep != 0) { |
698 |
return usb_host_handle_data(s, p);
|
699 |
} |
700 |
|
701 |
switch(s->ctrl.state) {
|
702 |
case CTRL_STATE_ACK:
|
703 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
704 |
s->ctrl.state = CTRL_STATE_IDLE; |
705 |
/* transfer OK */
|
706 |
} else {
|
707 |
/* ignore additional output */
|
708 |
} |
709 |
return 0; |
710 |
|
711 |
case CTRL_STATE_DATA:
|
712 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
713 |
int len = s->ctrl.len - s->ctrl.offset;
|
714 |
if (len > p->len) {
|
715 |
len = p->len; |
716 |
} |
717 |
memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len); |
718 |
s->ctrl.offset += len; |
719 |
if (s->ctrl.offset >= s->ctrl.len) {
|
720 |
s->ctrl.state = CTRL_STATE_ACK; |
721 |
} |
722 |
return len;
|
723 |
} |
724 |
|
725 |
s->ctrl.state = CTRL_STATE_IDLE; |
726 |
return USB_RET_STALL;
|
727 |
|
728 |
default:
|
729 |
return USB_RET_STALL;
|
730 |
} |
731 |
} |
732 |
|
733 |
/*
|
734 |
* Packet handler.
|
735 |
* Called by the HC (host controller).
|
736 |
*
|
737 |
* Returns length of the transaction or one of the USB_RET_XXX codes.
|
738 |
*/
|
739 |
static int usb_host_handle_packet(USBDevice *s, USBPacket *p) |
740 |
{ |
741 |
switch(p->pid) {
|
742 |
case USB_MSG_ATTACH:
|
743 |
s->state = USB_STATE_ATTACHED; |
744 |
return 0; |
745 |
|
746 |
case USB_MSG_DETACH:
|
747 |
s->state = USB_STATE_NOTATTACHED; |
748 |
return 0; |
749 |
|
750 |
case USB_MSG_RESET:
|
751 |
s->remote_wakeup = 0;
|
752 |
s->addr = 0;
|
753 |
s->state = USB_STATE_DEFAULT; |
754 |
s->info->handle_reset(s); |
755 |
return 0; |
756 |
} |
757 |
|
758 |
/* Rest of the PIDs must match our address */
|
759 |
if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr) {
|
760 |
return USB_RET_NODEV;
|
761 |
} |
762 |
|
763 |
switch (p->pid) {
|
764 |
case USB_TOKEN_SETUP:
|
765 |
return do_token_setup(s, p);
|
766 |
|
767 |
case USB_TOKEN_IN:
|
768 |
return do_token_in(s, p);
|
769 |
|
770 |
case USB_TOKEN_OUT:
|
771 |
return do_token_out(s, p);
|
772 |
|
773 |
default:
|
774 |
return USB_RET_STALL;
|
775 |
} |
776 |
} |
777 |
|
778 |
/* returns 1 on problem encountered or 0 for success */
|
779 |
static int usb_linux_update_endp_table(USBHostDevice *s) |
780 |
{ |
781 |
uint8_t *descriptors; |
782 |
uint8_t devep, type, configuration, alt_interface; |
783 |
struct usb_ctrltransfer ct;
|
784 |
int interface, ret, length, i;
|
785 |
|
786 |
ct.bRequestType = USB_DIR_IN; |
787 |
ct.bRequest = USB_REQ_GET_CONFIGURATION; |
788 |
ct.wValue = 0;
|
789 |
ct.wIndex = 0;
|
790 |
ct.wLength = 1;
|
791 |
ct.data = &configuration; |
792 |
ct.timeout = 50;
|
793 |
|
794 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
795 |
if (ret < 0) { |
796 |
perror("usb_linux_update_endp_table");
|
797 |
return 1; |
798 |
} |
799 |
|
800 |
/* in address state */
|
801 |
if (configuration == 0) { |
802 |
return 1; |
803 |
} |
804 |
|
805 |
/* get the desired configuration, interface, and endpoint descriptors
|
806 |
* from device description */
|
807 |
descriptors = &s->descr[18];
|
808 |
length = s->descr_len - 18;
|
809 |
i = 0;
|
810 |
|
811 |
if (descriptors[i + 1] != USB_DT_CONFIG || |
812 |
descriptors[i + 5] != configuration) {
|
813 |
DPRINTF("invalid descriptor data - configuration\n");
|
814 |
return 1; |
815 |
} |
816 |
i += descriptors[i]; |
817 |
|
818 |
while (i < length) {
|
819 |
if (descriptors[i + 1] != USB_DT_INTERFACE || |
820 |
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
821 |
descriptors[i + 4] == 0)) { |
822 |
i += descriptors[i]; |
823 |
continue;
|
824 |
} |
825 |
|
826 |
interface = descriptors[i + 2];
|
827 |
|
828 |
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
829 |
ct.bRequest = USB_REQ_GET_INTERFACE; |
830 |
ct.wValue = 0;
|
831 |
ct.wIndex = interface; |
832 |
ct.wLength = 1;
|
833 |
ct.data = &alt_interface; |
834 |
ct.timeout = 50;
|
835 |
|
836 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
837 |
if (ret < 0) { |
838 |
alt_interface = interface; |
839 |
} |
840 |
|
841 |
/* the current interface descriptor is the active interface
|
842 |
* and has endpoints */
|
843 |
if (descriptors[i + 3] != alt_interface) { |
844 |
i += descriptors[i]; |
845 |
continue;
|
846 |
} |
847 |
|
848 |
/* advance to the endpoints */
|
849 |
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) { |
850 |
i += descriptors[i]; |
851 |
} |
852 |
|
853 |
if (i >= length)
|
854 |
break;
|
855 |
|
856 |
while (i < length) {
|
857 |
if (descriptors[i + 1] != USB_DT_ENDPOINT) { |
858 |
break;
|
859 |
} |
860 |
|
861 |
devep = descriptors[i + 2];
|
862 |
switch (descriptors[i + 3] & 0x3) { |
863 |
case 0x00: |
864 |
type = USBDEVFS_URB_TYPE_CONTROL; |
865 |
break;
|
866 |
case 0x01: |
867 |
type = USBDEVFS_URB_TYPE_ISO; |
868 |
break;
|
869 |
case 0x02: |
870 |
type = USBDEVFS_URB_TYPE_BULK; |
871 |
break;
|
872 |
case 0x03: |
873 |
type = USBDEVFS_URB_TYPE_INTERRUPT; |
874 |
break;
|
875 |
default:
|
876 |
DPRINTF("usb_host: malformed endpoint type\n");
|
877 |
type = USBDEVFS_URB_TYPE_BULK; |
878 |
} |
879 |
s->endp_table[(devep & 0xf) - 1].type = type; |
880 |
s->endp_table[(devep & 0xf) - 1].halted = 0; |
881 |
|
882 |
i += descriptors[i]; |
883 |
} |
884 |
} |
885 |
return 0; |
886 |
} |
887 |
|
888 |
static int usb_host_open(USBHostDevice *dev, int bus_num, |
889 |
int addr, int devpath, const char *prod_name) |
890 |
{ |
891 |
int fd = -1, ret; |
892 |
struct usbdevfs_connectinfo ci;
|
893 |
char buf[1024]; |
894 |
|
895 |
if (dev->fd != -1) { |
896 |
goto fail;
|
897 |
} |
898 |
printf("husb: open device %d.%d\n", bus_num, addr);
|
899 |
|
900 |
if (!usb_host_device_path) {
|
901 |
perror("husb: USB Host Device Path not set");
|
902 |
goto fail;
|
903 |
} |
904 |
snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, |
905 |
bus_num, addr); |
906 |
fd = open(buf, O_RDWR | O_NONBLOCK); |
907 |
if (fd < 0) { |
908 |
perror(buf); |
909 |
goto fail;
|
910 |
} |
911 |
DPRINTF("husb: opened %s\n", buf);
|
912 |
|
913 |
dev->bus_num = bus_num; |
914 |
dev->addr = addr; |
915 |
dev->devpath = devpath; |
916 |
dev->fd = fd; |
917 |
|
918 |
/* read the device description */
|
919 |
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
920 |
if (dev->descr_len <= 0) { |
921 |
perror("husb: reading device data failed");
|
922 |
goto fail;
|
923 |
} |
924 |
|
925 |
#ifdef DEBUG
|
926 |
{ |
927 |
int x;
|
928 |
printf("=== begin dumping device descriptor data ===\n");
|
929 |
for (x = 0; x < dev->descr_len; x++) { |
930 |
printf("%02x ", dev->descr[x]);
|
931 |
} |
932 |
printf("\n=== end dumping device descriptor data ===\n");
|
933 |
} |
934 |
#endif
|
935 |
|
936 |
|
937 |
/*
|
938 |
* Initial configuration is -1 which makes us claim first
|
939 |
* available config. We used to start with 1, which does not
|
940 |
* always work. I've seen devices where first config starts
|
941 |
* with 2.
|
942 |
*/
|
943 |
if (!usb_host_claim_interfaces(dev, -1)) { |
944 |
goto fail;
|
945 |
} |
946 |
|
947 |
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
948 |
if (ret < 0) { |
949 |
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
950 |
goto fail;
|
951 |
} |
952 |
|
953 |
printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
|
954 |
|
955 |
ret = usb_linux_update_endp_table(dev); |
956 |
if (ret) {
|
957 |
goto fail;
|
958 |
} |
959 |
|
960 |
if (ci.slow) {
|
961 |
dev->dev.speed = USB_SPEED_LOW; |
962 |
} else {
|
963 |
dev->dev.speed = USB_SPEED_HIGH; |
964 |
} |
965 |
|
966 |
if (!prod_name || prod_name[0] == '\0') { |
967 |
snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
968 |
"host:%d.%d", bus_num, addr);
|
969 |
} else {
|
970 |
pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
971 |
prod_name); |
972 |
} |
973 |
|
974 |
/* USB devio uses 'write' flag to check for async completions */
|
975 |
qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
|
976 |
|
977 |
usb_device_attach(&dev->dev); |
978 |
return 0; |
979 |
|
980 |
fail:
|
981 |
dev->fd = -1;
|
982 |
if (fd != -1) { |
983 |
close(fd); |
984 |
} |
985 |
return -1; |
986 |
} |
987 |
|
988 |
static int usb_host_close(USBHostDevice *dev) |
989 |
{ |
990 |
if (dev->fd == -1) { |
991 |
return -1; |
992 |
} |
993 |
|
994 |
qemu_set_fd_handler(dev->fd, NULL, NULL, NULL); |
995 |
dev->closing = 1;
|
996 |
async_complete(dev); |
997 |
dev->closing = 0;
|
998 |
usb_device_detach(&dev->dev); |
999 |
ioctl(dev->fd, USBDEVFS_RESET); |
1000 |
close(dev->fd); |
1001 |
dev->fd = -1;
|
1002 |
return 0; |
1003 |
} |
1004 |
|
1005 |
static void usb_host_exit_notifier(struct Notifier* n) |
1006 |
{ |
1007 |
USBHostDevice *s = container_of(n, USBHostDevice, exit); |
1008 |
|
1009 |
if (s->fd != -1) { |
1010 |
ioctl(s->fd, USBDEVFS_RESET); |
1011 |
} |
1012 |
} |
1013 |
|
1014 |
static int usb_host_initfn(USBDevice *dev) |
1015 |
{ |
1016 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
1017 |
|
1018 |
dev->auto_attach = 0;
|
1019 |
s->fd = -1;
|
1020 |
QTAILQ_INSERT_TAIL(&hostdevs, s, next); |
1021 |
s->exit.notify = usb_host_exit_notifier; |
1022 |
qemu_add_exit_notifier(&s->exit); |
1023 |
usb_host_auto_check(NULL);
|
1024 |
return 0; |
1025 |
} |
1026 |
|
1027 |
static struct USBDeviceInfo usb_host_dev_info = { |
1028 |
.product_desc = "USB Host Device",
|
1029 |
.qdev.name = "usb-host",
|
1030 |
.qdev.size = sizeof(USBHostDevice),
|
1031 |
.init = usb_host_initfn, |
1032 |
.handle_packet = usb_host_handle_packet, |
1033 |
.handle_reset = usb_host_handle_reset, |
1034 |
.handle_destroy = usb_host_handle_destroy, |
1035 |
.usbdevice_name = "host",
|
1036 |
.usbdevice_init = usb_host_device_open, |
1037 |
.qdev.props = (Property[]) { |
1038 |
DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0), |
1039 |
DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0), |
1040 |
DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0), |
1041 |
DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0), |
1042 |
DEFINE_PROP_END_OF_LIST(), |
1043 |
}, |
1044 |
}; |
1045 |
|
1046 |
static void usb_host_register_devices(void) |
1047 |
{ |
1048 |
usb_qdev_register(&usb_host_dev_info); |
1049 |
} |
1050 |
device_init(usb_host_register_devices) |
1051 |
|
1052 |
USBDevice *usb_host_device_open(const char *devname) |
1053 |
{ |
1054 |
struct USBAutoFilter filter;
|
1055 |
USBDevice *dev; |
1056 |
char *p;
|
1057 |
|
1058 |
dev = usb_create(NULL /* FIXME */, "usb-host"); |
1059 |
|
1060 |
if (strstr(devname, "auto:")) { |
1061 |
if (parse_filter(devname, &filter) < 0) { |
1062 |
goto fail;
|
1063 |
} |
1064 |
} else {
|
1065 |
if ((p = strchr(devname, '.'))) { |
1066 |
filter.bus_num = strtoul(devname, NULL, 0); |
1067 |
filter.addr = strtoul(p + 1, NULL, 0); |
1068 |
filter.vendor_id = 0;
|
1069 |
filter.product_id = 0;
|
1070 |
} else if ((p = strchr(devname, ':'))) { |
1071 |
filter.bus_num = 0;
|
1072 |
filter.addr = 0;
|
1073 |
filter.vendor_id = strtoul(devname, NULL, 16); |
1074 |
filter.product_id = strtoul(p + 1, NULL, 16); |
1075 |
} else {
|
1076 |
goto fail;
|
1077 |
} |
1078 |
} |
1079 |
|
1080 |
qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num);
|
1081 |
qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr);
|
1082 |
qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
|
1083 |
qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
|
1084 |
qdev_init_nofail(&dev->qdev); |
1085 |
return dev;
|
1086 |
|
1087 |
fail:
|
1088 |
qdev_free(&dev->qdev); |
1089 |
return NULL; |
1090 |
} |
1091 |
|
1092 |
int usb_host_device_close(const char *devname) |
1093 |
{ |
1094 |
#if 0
|
1095 |
char product_name[PRODUCT_NAME_SZ];
|
1096 |
int bus_num, addr;
|
1097 |
USBHostDevice *s;
|
1098 |
|
1099 |
if (strstr(devname, "auto:")) {
|
1100 |
return usb_host_auto_del(devname);
|
1101 |
}
|
1102 |
if (usb_host_find_device(&bus_num, &addr, product_name,
|
1103 |
sizeof(product_name), devname) < 0) {
|
1104 |
return -1;
|
1105 |
}
|
1106 |
s = hostdev_find(bus_num, addr);
|
1107 |
if (s) {
|
1108 |
usb_device_delete_addr(s->bus_num, s->dev.addr);
|
1109 |
return 0;
|
1110 |
}
|
1111 |
#endif
|
1112 |
|
1113 |
return -1; |
1114 |
} |
1115 |
|
1116 |
static int get_tag_value(char *buf, int buf_size, |
1117 |
const char *str, const char *tag, |
1118 |
const char *stopchars) |
1119 |
{ |
1120 |
const char *p; |
1121 |
char *q;
|
1122 |
p = strstr(str, tag); |
1123 |
if (!p) {
|
1124 |
return -1; |
1125 |
} |
1126 |
p += strlen(tag); |
1127 |
while (qemu_isspace(*p)) {
|
1128 |
p++; |
1129 |
} |
1130 |
q = buf; |
1131 |
while (*p != '\0' && !strchr(stopchars, *p)) { |
1132 |
if ((q - buf) < (buf_size - 1)) { |
1133 |
*q++ = *p; |
1134 |
} |
1135 |
p++; |
1136 |
} |
1137 |
*q = '\0';
|
1138 |
return q - buf;
|
1139 |
} |
1140 |
|
1141 |
/*
|
1142 |
* Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
|
1143 |
* host's USB devices. This is legacy support since many distributions
|
1144 |
* are moving to /sys/bus/usb
|
1145 |
*/
|
1146 |
static int usb_host_scan_dev(void *opaque, USBScanFunc *func) |
1147 |
{ |
1148 |
FILE *f = NULL;
|
1149 |
char line[1024]; |
1150 |
char buf[1024]; |
1151 |
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
|
1152 |
char product_name[512]; |
1153 |
int ret = 0; |
1154 |
|
1155 |
if (!usb_host_device_path) {
|
1156 |
perror("husb: USB Host Device Path not set");
|
1157 |
goto the_end;
|
1158 |
} |
1159 |
snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); |
1160 |
f = fopen(line, "r");
|
1161 |
if (!f) {
|
1162 |
perror("husb: cannot open devices file");
|
1163 |
goto the_end;
|
1164 |
} |
1165 |
|
1166 |
device_count = 0;
|
1167 |
bus_num = addr = speed = class_id = product_id = vendor_id = 0;
|
1168 |
for(;;) {
|
1169 |
if (fgets(line, sizeof(line), f) == NULL) { |
1170 |
break;
|
1171 |
} |
1172 |
if (strlen(line) > 0) { |
1173 |
line[strlen(line) - 1] = '\0'; |
1174 |
} |
1175 |
if (line[0] == 'T' && line[1] == ':') { |
1176 |
if (device_count && (vendor_id || product_id)) {
|
1177 |
/* New device. Add the previously discovered device. */
|
1178 |
ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
|
1179 |
product_id, product_name, speed); |
1180 |
if (ret) {
|
1181 |
goto the_end;
|
1182 |
} |
1183 |
} |
1184 |
if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) { |
1185 |
goto fail;
|
1186 |
} |
1187 |
bus_num = atoi(buf); |
1188 |
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) { |
1189 |
goto fail;
|
1190 |
} |
1191 |
addr = atoi(buf); |
1192 |
if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) { |
1193 |
goto fail;
|
1194 |
} |
1195 |
if (!strcmp(buf, "480")) { |
1196 |
speed = USB_SPEED_HIGH; |
1197 |
} else if (!strcmp(buf, "1.5")) { |
1198 |
speed = USB_SPEED_LOW; |
1199 |
} else {
|
1200 |
speed = USB_SPEED_FULL; |
1201 |
} |
1202 |
product_name[0] = '\0'; |
1203 |
class_id = 0xff;
|
1204 |
device_count++; |
1205 |
product_id = 0;
|
1206 |
vendor_id = 0;
|
1207 |
} else if (line[0] == 'P' && line[1] == ':') { |
1208 |
if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) { |
1209 |
goto fail;
|
1210 |
} |
1211 |
vendor_id = strtoul(buf, NULL, 16); |
1212 |
if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) { |
1213 |
goto fail;
|
1214 |
} |
1215 |
product_id = strtoul(buf, NULL, 16); |
1216 |
} else if (line[0] == 'S' && line[1] == ':') { |
1217 |
if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) { |
1218 |
goto fail;
|
1219 |
} |
1220 |
pstrcpy(product_name, sizeof(product_name), buf);
|
1221 |
} else if (line[0] == 'D' && line[1] == ':') { |
1222 |
if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) { |
1223 |
goto fail;
|
1224 |
} |
1225 |
class_id = strtoul(buf, NULL, 16); |
1226 |
} |
1227 |
fail: ;
|
1228 |
} |
1229 |
if (device_count && (vendor_id || product_id)) {
|
1230 |
/* Add the last device. */
|
1231 |
ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
|
1232 |
product_id, product_name, speed); |
1233 |
} |
1234 |
the_end:
|
1235 |
if (f) {
|
1236 |
fclose(f); |
1237 |
} |
1238 |
return ret;
|
1239 |
} |
1240 |
|
1241 |
/*
|
1242 |
* Read sys file-system device file
|
1243 |
*
|
1244 |
* @line address of buffer to put file contents in
|
1245 |
* @line_size size of line
|
1246 |
* @device_file path to device file (printf format string)
|
1247 |
* @device_name device being opened (inserted into device_file)
|
1248 |
*
|
1249 |
* @return 0 failed, 1 succeeded ('line' contains data)
|
1250 |
*/
|
1251 |
static int usb_host_read_file(char *line, size_t line_size, |
1252 |
const char *device_file, const char *device_name) |
1253 |
{ |
1254 |
FILE *f; |
1255 |
int ret = 0; |
1256 |
char filename[PATH_MAX];
|
1257 |
|
1258 |
snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
|
1259 |
device_file); |
1260 |
f = fopen(filename, "r");
|
1261 |
if (f) {
|
1262 |
ret = fgets(line, line_size, f) != NULL;
|
1263 |
fclose(f); |
1264 |
} |
1265 |
|
1266 |
return ret;
|
1267 |
} |
1268 |
|
1269 |
/*
|
1270 |
* Use /sys/bus/usb/devices/ directory to determine host's USB
|
1271 |
* devices.
|
1272 |
*
|
1273 |
* This code is based on Robert Schiele's original patches posted to
|
1274 |
* the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
|
1275 |
*/
|
1276 |
static int usb_host_scan_sys(void *opaque, USBScanFunc *func) |
1277 |
{ |
1278 |
DIR *dir = NULL;
|
1279 |
char line[1024]; |
1280 |
int bus_num, addr, devpath, speed, class_id, product_id, vendor_id;
|
1281 |
int ret = 0; |
1282 |
char product_name[512]; |
1283 |
struct dirent *de;
|
1284 |
|
1285 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
1286 |
if (!dir) {
|
1287 |
perror("husb: cannot open devices directory");
|
1288 |
goto the_end;
|
1289 |
} |
1290 |
|
1291 |
while ((de = readdir(dir))) {
|
1292 |
if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { |
1293 |
char *tmpstr = de->d_name;
|
1294 |
if (!strncmp(de->d_name, "usb", 3)) { |
1295 |
tmpstr += 3;
|
1296 |
} |
1297 |
if (sscanf(tmpstr, "%d-%d", &bus_num, &devpath) < 1) { |
1298 |
goto the_end;
|
1299 |
} |
1300 |
|
1301 |
if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) { |
1302 |
goto the_end;
|
1303 |
} |
1304 |
if (sscanf(line, "%d", &addr) != 1) { |
1305 |
goto the_end;
|
1306 |
} |
1307 |
if (!usb_host_read_file(line, sizeof(line), "bDeviceClass", |
1308 |
de->d_name)) { |
1309 |
goto the_end;
|
1310 |
} |
1311 |
if (sscanf(line, "%x", &class_id) != 1) { |
1312 |
goto the_end;
|
1313 |
} |
1314 |
|
1315 |
if (!usb_host_read_file(line, sizeof(line), "idVendor", |
1316 |
de->d_name)) { |
1317 |
goto the_end;
|
1318 |
} |
1319 |
if (sscanf(line, "%x", &vendor_id) != 1) { |
1320 |
goto the_end;
|
1321 |
} |
1322 |
if (!usb_host_read_file(line, sizeof(line), "idProduct", |
1323 |
de->d_name)) { |
1324 |
goto the_end;
|
1325 |
} |
1326 |
if (sscanf(line, "%x", &product_id) != 1) { |
1327 |
goto the_end;
|
1328 |
} |
1329 |
if (!usb_host_read_file(line, sizeof(line), "product", |
1330 |
de->d_name)) { |
1331 |
*product_name = 0;
|
1332 |
} else {
|
1333 |
if (strlen(line) > 0) { |
1334 |
line[strlen(line) - 1] = '\0'; |
1335 |
} |
1336 |
pstrcpy(product_name, sizeof(product_name), line);
|
1337 |
} |
1338 |
|
1339 |
if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) { |
1340 |
goto the_end;
|
1341 |
} |
1342 |
if (!strcmp(line, "480\n")) { |
1343 |
speed = USB_SPEED_HIGH; |
1344 |
} else if (!strcmp(line, "1.5\n")) { |
1345 |
speed = USB_SPEED_LOW; |
1346 |
} else {
|
1347 |
speed = USB_SPEED_FULL; |
1348 |
} |
1349 |
|
1350 |
ret = func(opaque, bus_num, addr, devpath, class_id, vendor_id, |
1351 |
product_id, product_name, speed); |
1352 |
if (ret) {
|
1353 |
goto the_end;
|
1354 |
} |
1355 |
} |
1356 |
} |
1357 |
the_end:
|
1358 |
if (dir) {
|
1359 |
closedir(dir); |
1360 |
} |
1361 |
return ret;
|
1362 |
} |
1363 |
|
1364 |
/*
|
1365 |
* Determine how to access the host's USB devices and call the
|
1366 |
* specific support function.
|
1367 |
*/
|
1368 |
static int usb_host_scan(void *opaque, USBScanFunc *func) |
1369 |
{ |
1370 |
Monitor *mon = cur_mon; |
1371 |
FILE *f = NULL;
|
1372 |
DIR *dir = NULL;
|
1373 |
int ret = 0; |
1374 |
const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; |
1375 |
char devpath[PATH_MAX];
|
1376 |
|
1377 |
/* only check the host once */
|
1378 |
if (!usb_fs_type) {
|
1379 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
1380 |
if (dir) {
|
1381 |
/* devices found in /dev/bus/usb/ (yes - not a mistake!) */
|
1382 |
strcpy(devpath, USBDEVBUS_PATH); |
1383 |
usb_fs_type = USB_FS_SYS; |
1384 |
closedir(dir); |
1385 |
DPRINTF(USBDBG_DEVOPENED, USBSYSBUS_PATH); |
1386 |
goto found_devices;
|
1387 |
} |
1388 |
f = fopen(USBPROCBUS_PATH "/devices", "r"); |
1389 |
if (f) {
|
1390 |
/* devices found in /proc/bus/usb/ */
|
1391 |
strcpy(devpath, USBPROCBUS_PATH); |
1392 |
usb_fs_type = USB_FS_PROC; |
1393 |
fclose(f); |
1394 |
DPRINTF(USBDBG_DEVOPENED, USBPROCBUS_PATH); |
1395 |
goto found_devices;
|
1396 |
} |
1397 |
/* try additional methods if an access method hasn't been found yet */
|
1398 |
f = fopen(USBDEVBUS_PATH "/devices", "r"); |
1399 |
if (f) {
|
1400 |
/* devices found in /dev/bus/usb/ */
|
1401 |
strcpy(devpath, USBDEVBUS_PATH); |
1402 |
usb_fs_type = USB_FS_DEV; |
1403 |
fclose(f); |
1404 |
DPRINTF(USBDBG_DEVOPENED, USBDEVBUS_PATH); |
1405 |
goto found_devices;
|
1406 |
} |
1407 |
found_devices:
|
1408 |
if (!usb_fs_type) {
|
1409 |
if (mon) {
|
1410 |
monitor_printf(mon, "husb: unable to access USB devices\n");
|
1411 |
} |
1412 |
return -ENOENT;
|
1413 |
} |
1414 |
|
1415 |
/* the module setting (used later for opening devices) */
|
1416 |
usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
|
1417 |
strcpy(usb_host_device_path, devpath); |
1418 |
if (mon) {
|
1419 |
monitor_printf(mon, "husb: using %s file-system with %s\n",
|
1420 |
fs_type[usb_fs_type], usb_host_device_path); |
1421 |
} |
1422 |
} |
1423 |
|
1424 |
switch (usb_fs_type) {
|
1425 |
case USB_FS_PROC:
|
1426 |
case USB_FS_DEV:
|
1427 |
ret = usb_host_scan_dev(opaque, func); |
1428 |
break;
|
1429 |
case USB_FS_SYS:
|
1430 |
ret = usb_host_scan_sys(opaque, func); |
1431 |
break;
|
1432 |
default:
|
1433 |
ret = -EINVAL; |
1434 |
break;
|
1435 |
} |
1436 |
return ret;
|
1437 |
} |
1438 |
|
1439 |
static QEMUTimer *usb_auto_timer;
|
1440 |
|
1441 |
static int usb_host_auto_scan(void *opaque, int bus_num, int addr, int devpath, |
1442 |
int class_id, int vendor_id, int product_id, |
1443 |
const char *product_name, int speed) |
1444 |
{ |
1445 |
struct USBAutoFilter *f;
|
1446 |
struct USBHostDevice *s;
|
1447 |
|
1448 |
/* Ignore hubs */
|
1449 |
if (class_id == 9) |
1450 |
return 0; |
1451 |
|
1452 |
QTAILQ_FOREACH(s, &hostdevs, next) { |
1453 |
f = &s->match; |
1454 |
|
1455 |
if (f->bus_num > 0 && f->bus_num != bus_num) { |
1456 |
continue;
|
1457 |
} |
1458 |
if (f->addr > 0 && f->addr != addr) { |
1459 |
continue;
|
1460 |
} |
1461 |
|
1462 |
if (f->vendor_id > 0 && f->vendor_id != vendor_id) { |
1463 |
continue;
|
1464 |
} |
1465 |
|
1466 |
if (f->product_id > 0 && f->product_id != product_id) { |
1467 |
continue;
|
1468 |
} |
1469 |
/* We got a match */
|
1470 |
|
1471 |
/* Already attached ? */
|
1472 |
if (s->fd != -1) { |
1473 |
return 0; |
1474 |
} |
1475 |
DPRINTF("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
|
1476 |
|
1477 |
usb_host_open(s, bus_num, addr, devpath, product_name); |
1478 |
} |
1479 |
|
1480 |
return 0; |
1481 |
} |
1482 |
|
1483 |
static void usb_host_auto_check(void *unused) |
1484 |
{ |
1485 |
struct USBHostDevice *s;
|
1486 |
int unconnected = 0; |
1487 |
|
1488 |
usb_host_scan(NULL, usb_host_auto_scan);
|
1489 |
|
1490 |
QTAILQ_FOREACH(s, &hostdevs, next) { |
1491 |
if (s->fd == -1) { |
1492 |
unconnected++; |
1493 |
} |
1494 |
} |
1495 |
|
1496 |
if (unconnected == 0) { |
1497 |
/* nothing to watch */
|
1498 |
if (usb_auto_timer) {
|
1499 |
qemu_del_timer(usb_auto_timer); |
1500 |
} |
1501 |
return;
|
1502 |
} |
1503 |
|
1504 |
if (!usb_auto_timer) {
|
1505 |
usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_check, NULL);
|
1506 |
if (!usb_auto_timer) {
|
1507 |
return;
|
1508 |
} |
1509 |
} |
1510 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
1511 |
} |
1512 |
|
1513 |
/*
|
1514 |
* Autoconnect filter
|
1515 |
* Format:
|
1516 |
* auto:bus:dev[:vid:pid]
|
1517 |
* auto:bus.dev[:vid:pid]
|
1518 |
*
|
1519 |
* bus - bus number (dec, * means any)
|
1520 |
* dev - device number (dec, * means any)
|
1521 |
* vid - vendor id (hex, * means any)
|
1522 |
* pid - product id (hex, * means any)
|
1523 |
*
|
1524 |
* See 'lsusb' output.
|
1525 |
*/
|
1526 |
static int parse_filter(const char *spec, struct USBAutoFilter *f) |
1527 |
{ |
1528 |
enum { BUS, DEV, VID, PID, DONE };
|
1529 |
const char *p = spec; |
1530 |
int i;
|
1531 |
|
1532 |
f->bus_num = 0;
|
1533 |
f->addr = 0;
|
1534 |
f->vendor_id = 0;
|
1535 |
f->product_id = 0;
|
1536 |
|
1537 |
for (i = BUS; i < DONE; i++) {
|
1538 |
p = strpbrk(p, ":.");
|
1539 |
if (!p) {
|
1540 |
break;
|
1541 |
} |
1542 |
p++; |
1543 |
|
1544 |
if (*p == '*') { |
1545 |
continue;
|
1546 |
} |
1547 |
switch(i) {
|
1548 |
case BUS: f->bus_num = strtol(p, NULL, 10); break; |
1549 |
case DEV: f->addr = strtol(p, NULL, 10); break; |
1550 |
case VID: f->vendor_id = strtol(p, NULL, 16); break; |
1551 |
case PID: f->product_id = strtol(p, NULL, 16); break; |
1552 |
} |
1553 |
} |
1554 |
|
1555 |
if (i < DEV) {
|
1556 |
fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
|
1557 |
return -1; |
1558 |
} |
1559 |
|
1560 |
return 0; |
1561 |
} |
1562 |
|
1563 |
/**********************/
|
1564 |
/* USB host device info */
|
1565 |
|
1566 |
struct usb_class_info {
|
1567 |
int class;
|
1568 |
const char *class_name; |
1569 |
}; |
1570 |
|
1571 |
static const struct usb_class_info usb_class_info[] = { |
1572 |
{ USB_CLASS_AUDIO, "Audio"},
|
1573 |
{ USB_CLASS_COMM, "Communication"},
|
1574 |
{ USB_CLASS_HID, "HID"},
|
1575 |
{ USB_CLASS_HUB, "Hub" },
|
1576 |
{ USB_CLASS_PHYSICAL, "Physical" },
|
1577 |
{ USB_CLASS_PRINTER, "Printer" },
|
1578 |
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
1579 |
{ USB_CLASS_CDC_DATA, "Data" },
|
1580 |
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
1581 |
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
1582 |
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
1583 |
{ USB_CLASS_CSCID, "Smart Card" },
|
1584 |
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
1585 |
{ -1, NULL } |
1586 |
}; |
1587 |
|
1588 |
static const char *usb_class_str(uint8_t class) |
1589 |
{ |
1590 |
const struct usb_class_info *p; |
1591 |
for(p = usb_class_info; p->class != -1; p++) { |
1592 |
if (p->class == class) {
|
1593 |
break;
|
1594 |
} |
1595 |
} |
1596 |
return p->class_name;
|
1597 |
} |
1598 |
|
1599 |
static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id, |
1600 |
int vendor_id, int product_id, |
1601 |
const char *product_name, |
1602 |
int speed)
|
1603 |
{ |
1604 |
const char *class_str, *speed_str; |
1605 |
|
1606 |
switch(speed) {
|
1607 |
case USB_SPEED_LOW:
|
1608 |
speed_str = "1.5";
|
1609 |
break;
|
1610 |
case USB_SPEED_FULL:
|
1611 |
speed_str = "12";
|
1612 |
break;
|
1613 |
case USB_SPEED_HIGH:
|
1614 |
speed_str = "480";
|
1615 |
break;
|
1616 |
default:
|
1617 |
speed_str = "?";
|
1618 |
break;
|
1619 |
} |
1620 |
|
1621 |
monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n",
|
1622 |
bus_num, addr, speed_str); |
1623 |
class_str = usb_class_str(class_id); |
1624 |
if (class_str) {
|
1625 |
monitor_printf(mon, " %s:", class_str);
|
1626 |
} else {
|
1627 |
monitor_printf(mon, " Class %02x:", class_id);
|
1628 |
} |
1629 |
monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
|
1630 |
if (product_name[0] != '\0') { |
1631 |
monitor_printf(mon, ", %s", product_name);
|
1632 |
} |
1633 |
monitor_printf(mon, "\n");
|
1634 |
} |
1635 |
|
1636 |
static int usb_host_info_device(void *opaque, int bus_num, int addr, |
1637 |
int devpath, int class_id, |
1638 |
int vendor_id, int product_id, |
1639 |
const char *product_name, |
1640 |
int speed)
|
1641 |
{ |
1642 |
Monitor *mon = opaque; |
1643 |
|
1644 |
usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id, |
1645 |
product_name, speed); |
1646 |
return 0; |
1647 |
} |
1648 |
|
1649 |
static void dec2str(int val, char *str, size_t size) |
1650 |
{ |
1651 |
if (val == 0) { |
1652 |
snprintf(str, size, "*");
|
1653 |
} else {
|
1654 |
snprintf(str, size, "%d", val);
|
1655 |
} |
1656 |
} |
1657 |
|
1658 |
static void hex2str(int val, char *str, size_t size) |
1659 |
{ |
1660 |
if (val == 0) { |
1661 |
snprintf(str, size, "*");
|
1662 |
} else {
|
1663 |
snprintf(str, size, "%04x", val);
|
1664 |
} |
1665 |
} |
1666 |
|
1667 |
void usb_host_info(Monitor *mon)
|
1668 |
{ |
1669 |
struct USBAutoFilter *f;
|
1670 |
struct USBHostDevice *s;
|
1671 |
|
1672 |
usb_host_scan(mon, usb_host_info_device); |
1673 |
|
1674 |
if (QTAILQ_EMPTY(&hostdevs)) {
|
1675 |
return;
|
1676 |
} |
1677 |
|
1678 |
monitor_printf(mon, " Auto filters:\n");
|
1679 |
QTAILQ_FOREACH(s, &hostdevs, next) { |
1680 |
char bus[10], addr[10], vid[10], pid[10]; |
1681 |
f = &s->match; |
1682 |
dec2str(f->bus_num, bus, sizeof(bus));
|
1683 |
dec2str(f->addr, addr, sizeof(addr));
|
1684 |
hex2str(f->vendor_id, vid, sizeof(vid));
|
1685 |
hex2str(f->product_id, pid, sizeof(pid));
|
1686 |
monitor_printf(mon, " Device %s.%s ID %s:%s\n",
|
1687 |
bus, addr, vid, pid); |
1688 |
} |
1689 |
} |