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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
|
7 |
* Support for host device auto connect & disconnect
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* Major rewrite to support fully async operation
|
9 |
*
|
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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
|
25 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
26 |
* 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 class_id, |
66 |
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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108 |
* 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 {
|
113 |
uint16_t len; |
114 |
uint16_t offset; |
115 |
uint8_t state; |
116 |
struct usb_ctrlrequest req;
|
117 |
uint8_t buffer[8192];
|
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}; |
119 |
|
120 |
struct USBAutoFilter {
|
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uint32_t bus_num; |
122 |
uint32_t addr; |
123 |
uint32_t vendor_id; |
124 |
uint32_t product_id; |
125 |
}; |
126 |
|
127 |
typedef struct USBHostDevice { |
128 |
USBDevice dev; |
129 |
int fd;
|
130 |
|
131 |
uint8_t descr[1024];
|
132 |
int descr_len;
|
133 |
int configuration;
|
134 |
int ninterfaces;
|
135 |
int closing;
|
136 |
Notifier exit; |
137 |
|
138 |
struct ctrl_struct ctrl;
|
139 |
struct endp_data endp_table[MAX_ENDPOINTS];
|
140 |
|
141 |
/* Host side address */
|
142 |
int bus_num;
|
143 |
int addr;
|
144 |
struct USBAutoFilter match;
|
145 |
|
146 |
QTAILQ_ENTRY(USBHostDevice) next; |
147 |
} USBHostDevice; |
148 |
|
149 |
static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs);
|
150 |
|
151 |
static int usb_host_close(USBHostDevice *dev); |
152 |
static int parse_filter(const char *spec, struct USBAutoFilter *f); |
153 |
static void usb_host_auto_check(void *unused); |
154 |
|
155 |
static int is_isoc(USBHostDevice *s, int ep) |
156 |
{ |
157 |
return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; |
158 |
} |
159 |
|
160 |
static int is_halted(USBHostDevice *s, int ep) |
161 |
{ |
162 |
return s->endp_table[ep - 1].halted; |
163 |
} |
164 |
|
165 |
static void clear_halt(USBHostDevice *s, int ep) |
166 |
{ |
167 |
s->endp_table[ep - 1].halted = 0; |
168 |
} |
169 |
|
170 |
static void set_halt(USBHostDevice *s, int ep) |
171 |
{ |
172 |
s->endp_table[ep - 1].halted = 1; |
173 |
} |
174 |
|
175 |
/*
|
176 |
* Async URB state.
|
177 |
* We always allocate one isoc descriptor even for bulk transfers
|
178 |
* to simplify allocation and casts.
|
179 |
*/
|
180 |
typedef struct AsyncURB |
181 |
{ |
182 |
struct usbdevfs_urb urb;
|
183 |
struct usbdevfs_iso_packet_desc isocpd;
|
184 |
|
185 |
USBPacket *packet; |
186 |
USBHostDevice *hdev; |
187 |
} AsyncURB; |
188 |
|
189 |
static AsyncURB *async_alloc(void) |
190 |
{ |
191 |
return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); |
192 |
} |
193 |
|
194 |
static void async_free(AsyncURB *aurb) |
195 |
{ |
196 |
qemu_free(aurb); |
197 |
} |
198 |
|
199 |
static void async_complete_ctrl(USBHostDevice *s, USBPacket *p) |
200 |
{ |
201 |
switch(s->ctrl.state) {
|
202 |
case CTRL_STATE_SETUP:
|
203 |
if (p->len < s->ctrl.len)
|
204 |
s->ctrl.len = p->len; |
205 |
s->ctrl.state = CTRL_STATE_DATA; |
206 |
p->len = 8;
|
207 |
break;
|
208 |
|
209 |
case CTRL_STATE_ACK:
|
210 |
s->ctrl.state = CTRL_STATE_IDLE; |
211 |
p->len = 0;
|
212 |
break;
|
213 |
|
214 |
default:
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215 |
break;
|
216 |
} |
217 |
} |
218 |
|
219 |
static void async_complete(void *opaque) |
220 |
{ |
221 |
USBHostDevice *s = opaque; |
222 |
AsyncURB *aurb; |
223 |
|
224 |
while (1) { |
225 |
USBPacket *p; |
226 |
|
227 |
int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
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228 |
if (r < 0) { |
229 |
if (errno == EAGAIN) {
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230 |
return;
|
231 |
} |
232 |
if (errno == ENODEV && !s->closing) {
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233 |
printf("husb: device %d.%d disconnected\n",
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234 |
s->bus_num, s->addr); |
235 |
usb_host_close(s); |
236 |
usb_host_auto_check(NULL);
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237 |
return;
|
238 |
} |
239 |
|
240 |
DPRINTF("husb: async. reap urb failed errno %d\n", errno);
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241 |
return;
|
242 |
} |
243 |
|
244 |
p = aurb->packet; |
245 |
|
246 |
DPRINTF("husb: async completed. aurb %p status %d alen %d\n",
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247 |
aurb, aurb->urb.status, aurb->urb.actual_length); |
248 |
|
249 |
if (p) {
|
250 |
switch (aurb->urb.status) {
|
251 |
case 0: |
252 |
p->len = aurb->urb.actual_length; |
253 |
if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) {
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254 |
async_complete_ctrl(s, p); |
255 |
} |
256 |
break;
|
257 |
|
258 |
case -EPIPE:
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259 |
set_halt(s, p->devep); |
260 |
p->len = USB_RET_STALL; |
261 |
break;
|
262 |
|
263 |
default:
|
264 |
p->len = USB_RET_NAK; |
265 |
break;
|
266 |
} |
267 |
|
268 |
usb_packet_complete(p); |
269 |
} |
270 |
|
271 |
async_free(aurb); |
272 |
} |
273 |
} |
274 |
|
275 |
static void async_cancel(USBPacket *unused, void *opaque) |
276 |
{ |
277 |
AsyncURB *aurb = opaque; |
278 |
USBHostDevice *s = aurb->hdev; |
279 |
|
280 |
DPRINTF("husb: async cancel. aurb %p\n", aurb);
|
281 |
|
282 |
/* Mark it as dead (see async_complete above) */
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283 |
aurb->packet = NULL;
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284 |
|
285 |
int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
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286 |
if (r < 0) { |
287 |
DPRINTF("husb: async. discard urb failed errno %d\n", errno);
|
288 |
} |
289 |
} |
290 |
|
291 |
static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) |
292 |
{ |
293 |
int dev_descr_len, config_descr_len;
|
294 |
int interface, nb_interfaces;
|
295 |
int ret, i;
|
296 |
|
297 |
if (configuration == 0) /* address state - ignore */ |
298 |
return 1; |
299 |
|
300 |
DPRINTF("husb: claiming interfaces. config %d\n", configuration);
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301 |
|
302 |
i = 0;
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303 |
dev_descr_len = dev->descr[0];
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304 |
if (dev_descr_len > dev->descr_len) {
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305 |
goto fail;
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306 |
} |
307 |
|
308 |
i += dev_descr_len; |
309 |
while (i < dev->descr_len) {
|
310 |
DPRINTF("husb: i is %d, descr_len is %d, dl %d, dt %d\n",
|
311 |
i, dev->descr_len, |
312 |
dev->descr[i], dev->descr[i+1]);
|
313 |
|
314 |
if (dev->descr[i+1] != USB_DT_CONFIG) { |
315 |
i += dev->descr[i]; |
316 |
continue;
|
317 |
} |
318 |
config_descr_len = dev->descr[i]; |
319 |
|
320 |
printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); |
321 |
|
322 |
if (configuration < 0 || configuration == dev->descr[i + 5]) { |
323 |
configuration = dev->descr[i + 5];
|
324 |
break;
|
325 |
} |
326 |
|
327 |
i += config_descr_len; |
328 |
} |
329 |
|
330 |
if (i >= dev->descr_len) {
|
331 |
fprintf(stderr, |
332 |
"husb: update iface failed. no matching configuration\n");
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333 |
goto fail;
|
334 |
} |
335 |
nb_interfaces = dev->descr[i + 4];
|
336 |
|
337 |
#ifdef USBDEVFS_DISCONNECT
|
338 |
/* earlier Linux 2.4 do not support that */
|
339 |
{ |
340 |
struct usbdevfs_ioctl ctrl;
|
341 |
for (interface = 0; interface < nb_interfaces; interface++) { |
342 |
ctrl.ioctl_code = USBDEVFS_DISCONNECT; |
343 |
ctrl.ifno = interface; |
344 |
ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); |
345 |
if (ret < 0 && errno != ENODATA) { |
346 |
perror("USBDEVFS_DISCONNECT");
|
347 |
goto fail;
|
348 |
} |
349 |
} |
350 |
} |
351 |
#endif
|
352 |
|
353 |
/* XXX: only grab if all interfaces are free */
|
354 |
for (interface = 0; interface < nb_interfaces; interface++) { |
355 |
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); |
356 |
if (ret < 0) { |
357 |
if (errno == EBUSY) {
|
358 |
printf("husb: update iface. device already grabbed\n");
|
359 |
} else {
|
360 |
perror("husb: failed to claim interface");
|
361 |
} |
362 |
fail:
|
363 |
return 0; |
364 |
} |
365 |
} |
366 |
|
367 |
printf("husb: %d interfaces claimed for configuration %d\n",
|
368 |
nb_interfaces, configuration); |
369 |
|
370 |
dev->ninterfaces = nb_interfaces; |
371 |
dev->configuration = configuration; |
372 |
return 1; |
373 |
} |
374 |
|
375 |
static int usb_host_release_interfaces(USBHostDevice *s) |
376 |
{ |
377 |
int ret, i;
|
378 |
|
379 |
DPRINTF("husb: releasing interfaces\n");
|
380 |
|
381 |
for (i = 0; i < s->ninterfaces; i++) { |
382 |
ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); |
383 |
if (ret < 0) { |
384 |
perror("husb: failed to release interface");
|
385 |
return 0; |
386 |
} |
387 |
} |
388 |
|
389 |
return 1; |
390 |
} |
391 |
|
392 |
static void usb_host_handle_reset(USBDevice *dev) |
393 |
{ |
394 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
395 |
|
396 |
DPRINTF("husb: reset device %u.%u\n", s->bus_num, s->addr);
|
397 |
|
398 |
ioctl(s->fd, USBDEVFS_RESET); |
399 |
|
400 |
usb_host_claim_interfaces(s, s->configuration); |
401 |
} |
402 |
|
403 |
static void usb_host_handle_destroy(USBDevice *dev) |
404 |
{ |
405 |
USBHostDevice *s = (USBHostDevice *)dev; |
406 |
|
407 |
usb_host_close(s); |
408 |
QTAILQ_REMOVE(&hostdevs, s, next); |
409 |
qemu_remove_exit_notifier(&s->exit); |
410 |
} |
411 |
|
412 |
static int usb_linux_update_endp_table(USBHostDevice *s); |
413 |
|
414 |
static int usb_host_handle_data(USBHostDevice *s, USBPacket *p) |
415 |
{ |
416 |
struct usbdevfs_urb *urb;
|
417 |
AsyncURB *aurb; |
418 |
int ret;
|
419 |
|
420 |
aurb = async_alloc(); |
421 |
aurb->hdev = s; |
422 |
aurb->packet = p; |
423 |
|
424 |
urb = &aurb->urb; |
425 |
|
426 |
if (p->pid == USB_TOKEN_IN) {
|
427 |
urb->endpoint = p->devep | 0x80;
|
428 |
} else {
|
429 |
urb->endpoint = p->devep; |
430 |
} |
431 |
|
432 |
if (is_halted(s, p->devep)) {
|
433 |
ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint); |
434 |
if (ret < 0) { |
435 |
DPRINTF("husb: failed to clear halt. ep 0x%x errno %d\n",
|
436 |
urb->endpoint, errno); |
437 |
return USB_RET_NAK;
|
438 |
} |
439 |
clear_halt(s, p->devep); |
440 |
} |
441 |
|
442 |
urb->buffer = p->data; |
443 |
urb->buffer_length = p->len; |
444 |
|
445 |
if (is_isoc(s, p->devep)) {
|
446 |
/* Setup ISOC transfer */
|
447 |
urb->type = USBDEVFS_URB_TYPE_ISO; |
448 |
urb->flags = USBDEVFS_URB_ISO_ASAP; |
449 |
urb->number_of_packets = 1;
|
450 |
urb->iso_frame_desc[0].length = p->len;
|
451 |
} else {
|
452 |
/* Setup bulk transfer */
|
453 |
urb->type = USBDEVFS_URB_TYPE_BULK; |
454 |
} |
455 |
|
456 |
urb->usercontext = s; |
457 |
|
458 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
459 |
|
460 |
DPRINTF("husb: data submit. ep 0x%x len %u aurb %p\n",
|
461 |
urb->endpoint, p->len, aurb); |
462 |
|
463 |
if (ret < 0) { |
464 |
DPRINTF("husb: submit failed. errno %d\n", errno);
|
465 |
async_free(aurb); |
466 |
|
467 |
switch(errno) {
|
468 |
case ETIMEDOUT:
|
469 |
return USB_RET_NAK;
|
470 |
case EPIPE:
|
471 |
default:
|
472 |
return USB_RET_STALL;
|
473 |
} |
474 |
} |
475 |
|
476 |
usb_defer_packet(p, async_cancel, aurb); |
477 |
return USB_RET_ASYNC;
|
478 |
} |
479 |
|
480 |
static int ctrl_error(void) |
481 |
{ |
482 |
if (errno == ETIMEDOUT) {
|
483 |
return USB_RET_NAK;
|
484 |
} else {
|
485 |
return USB_RET_STALL;
|
486 |
} |
487 |
} |
488 |
|
489 |
static int usb_host_set_address(USBHostDevice *s, int addr) |
490 |
{ |
491 |
DPRINTF("husb: ctrl set addr %u\n", addr);
|
492 |
s->dev.addr = addr; |
493 |
return 0; |
494 |
} |
495 |
|
496 |
static int usb_host_set_config(USBHostDevice *s, int config) |
497 |
{ |
498 |
usb_host_release_interfaces(s); |
499 |
|
500 |
int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
|
501 |
|
502 |
DPRINTF("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
|
503 |
|
504 |
if (ret < 0) { |
505 |
return ctrl_error();
|
506 |
} |
507 |
usb_host_claim_interfaces(s, config); |
508 |
return 0; |
509 |
} |
510 |
|
511 |
static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) |
512 |
{ |
513 |
struct usbdevfs_setinterface si;
|
514 |
int ret;
|
515 |
|
516 |
si.interface = iface; |
517 |
si.altsetting = alt; |
518 |
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); |
519 |
|
520 |
DPRINTF("husb: ctrl set iface %d altset %d ret %d errno %d\n",
|
521 |
iface, alt, ret, errno); |
522 |
|
523 |
if (ret < 0) { |
524 |
return ctrl_error();
|
525 |
} |
526 |
usb_linux_update_endp_table(s); |
527 |
return 0; |
528 |
} |
529 |
|
530 |
static int usb_host_handle_control(USBHostDevice *s, USBPacket *p) |
531 |
{ |
532 |
struct usbdevfs_urb *urb;
|
533 |
AsyncURB *aurb; |
534 |
int ret, value, index;
|
535 |
int buffer_len;
|
536 |
|
537 |
/*
|
538 |
* Process certain standard device requests.
|
539 |
* These are infrequent and are processed synchronously.
|
540 |
*/
|
541 |
value = le16_to_cpu(s->ctrl.req.wValue); |
542 |
index = le16_to_cpu(s->ctrl.req.wIndex); |
543 |
|
544 |
DPRINTF("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
|
545 |
s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, |
546 |
s->ctrl.len); |
547 |
|
548 |
if (s->ctrl.req.bRequestType == 0) { |
549 |
switch (s->ctrl.req.bRequest) {
|
550 |
case USB_REQ_SET_ADDRESS:
|
551 |
return usb_host_set_address(s, value);
|
552 |
|
553 |
case USB_REQ_SET_CONFIGURATION:
|
554 |
return usb_host_set_config(s, value & 0xff); |
555 |
} |
556 |
} |
557 |
|
558 |
if (s->ctrl.req.bRequestType == 1 && |
559 |
s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) { |
560 |
return usb_host_set_interface(s, index, value);
|
561 |
} |
562 |
|
563 |
/* The rest are asynchronous */
|
564 |
|
565 |
buffer_len = 8 + s->ctrl.len;
|
566 |
if (buffer_len > sizeof(s->ctrl.buffer)) { |
567 |
fprintf(stderr, "husb: ctrl buffer too small (%u > %zu)\n",
|
568 |
buffer_len, sizeof(s->ctrl.buffer));
|
569 |
return USB_RET_STALL;
|
570 |
} |
571 |
|
572 |
aurb = async_alloc(); |
573 |
aurb->hdev = s; |
574 |
aurb->packet = p; |
575 |
|
576 |
/*
|
577 |
* Setup ctrl transfer.
|
578 |
*
|
579 |
* s->ctrl is layed out such that data buffer immediately follows
|
580 |
* 'req' struct which is exactly what usbdevfs expects.
|
581 |
*/
|
582 |
urb = &aurb->urb; |
583 |
|
584 |
urb->type = USBDEVFS_URB_TYPE_CONTROL; |
585 |
urb->endpoint = p->devep; |
586 |
|
587 |
urb->buffer = &s->ctrl.req; |
588 |
urb->buffer_length = buffer_len; |
589 |
|
590 |
urb->usercontext = s; |
591 |
|
592 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
593 |
|
594 |
DPRINTF("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
|
595 |
|
596 |
if (ret < 0) { |
597 |
DPRINTF("husb: submit failed. errno %d\n", errno);
|
598 |
async_free(aurb); |
599 |
|
600 |
switch(errno) {
|
601 |
case ETIMEDOUT:
|
602 |
return USB_RET_NAK;
|
603 |
case EPIPE:
|
604 |
default:
|
605 |
return USB_RET_STALL;
|
606 |
} |
607 |
} |
608 |
|
609 |
usb_defer_packet(p, async_cancel, aurb); |
610 |
return USB_RET_ASYNC;
|
611 |
} |
612 |
|
613 |
static int do_token_setup(USBDevice *dev, USBPacket *p) |
614 |
{ |
615 |
USBHostDevice *s = (USBHostDevice *) dev; |
616 |
int ret = 0; |
617 |
|
618 |
if (p->len != 8) { |
619 |
return USB_RET_STALL;
|
620 |
} |
621 |
|
622 |
memcpy(&s->ctrl.req, p->data, 8);
|
623 |
s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength); |
624 |
s->ctrl.offset = 0;
|
625 |
s->ctrl.state = CTRL_STATE_SETUP; |
626 |
|
627 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
628 |
ret = usb_host_handle_control(s, p); |
629 |
if (ret < 0) { |
630 |
return ret;
|
631 |
} |
632 |
|
633 |
if (ret < s->ctrl.len) {
|
634 |
s->ctrl.len = ret; |
635 |
} |
636 |
s->ctrl.state = CTRL_STATE_DATA; |
637 |
} else {
|
638 |
if (s->ctrl.len == 0) { |
639 |
s->ctrl.state = CTRL_STATE_ACK; |
640 |
} else {
|
641 |
s->ctrl.state = CTRL_STATE_DATA; |
642 |
} |
643 |
} |
644 |
|
645 |
return ret;
|
646 |
} |
647 |
|
648 |
static int do_token_in(USBDevice *dev, USBPacket *p) |
649 |
{ |
650 |
USBHostDevice *s = (USBHostDevice *) dev; |
651 |
int ret = 0; |
652 |
|
653 |
if (p->devep != 0) { |
654 |
return usb_host_handle_data(s, p);
|
655 |
} |
656 |
|
657 |
switch(s->ctrl.state) {
|
658 |
case CTRL_STATE_ACK:
|
659 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
660 |
ret = usb_host_handle_control(s, p); |
661 |
if (ret == USB_RET_ASYNC) {
|
662 |
return USB_RET_ASYNC;
|
663 |
} |
664 |
s->ctrl.state = CTRL_STATE_IDLE; |
665 |
return ret > 0 ? 0 : ret; |
666 |
} |
667 |
|
668 |
return 0; |
669 |
|
670 |
case CTRL_STATE_DATA:
|
671 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
672 |
int len = s->ctrl.len - s->ctrl.offset;
|
673 |
if (len > p->len) {
|
674 |
len = p->len; |
675 |
} |
676 |
memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len); |
677 |
s->ctrl.offset += len; |
678 |
if (s->ctrl.offset >= s->ctrl.len) {
|
679 |
s->ctrl.state = CTRL_STATE_ACK; |
680 |
} |
681 |
return len;
|
682 |
} |
683 |
|
684 |
s->ctrl.state = CTRL_STATE_IDLE; |
685 |
return USB_RET_STALL;
|
686 |
|
687 |
default:
|
688 |
return USB_RET_STALL;
|
689 |
} |
690 |
} |
691 |
|
692 |
static int do_token_out(USBDevice *dev, USBPacket *p) |
693 |
{ |
694 |
USBHostDevice *s = (USBHostDevice *) dev; |
695 |
|
696 |
if (p->devep != 0) { |
697 |
return usb_host_handle_data(s, p);
|
698 |
} |
699 |
|
700 |
switch(s->ctrl.state) {
|
701 |
case CTRL_STATE_ACK:
|
702 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
703 |
s->ctrl.state = CTRL_STATE_IDLE; |
704 |
/* transfer OK */
|
705 |
} else {
|
706 |
/* ignore additional output */
|
707 |
} |
708 |
return 0; |
709 |
|
710 |
case CTRL_STATE_DATA:
|
711 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
712 |
int len = s->ctrl.len - s->ctrl.offset;
|
713 |
if (len > p->len) {
|
714 |
len = p->len; |
715 |
} |
716 |
memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len); |
717 |
s->ctrl.offset += len; |
718 |
if (s->ctrl.offset >= s->ctrl.len) {
|
719 |
s->ctrl.state = CTRL_STATE_ACK; |
720 |
} |
721 |
return len;
|
722 |
} |
723 |
|
724 |
s->ctrl.state = CTRL_STATE_IDLE; |
725 |
return USB_RET_STALL;
|
726 |
|
727 |
default:
|
728 |
return USB_RET_STALL;
|
729 |
} |
730 |
} |
731 |
|
732 |
/*
|
733 |
* Packet handler.
|
734 |
* Called by the HC (host controller).
|
735 |
*
|
736 |
* Returns length of the transaction or one of the USB_RET_XXX codes.
|
737 |
*/
|
738 |
static int usb_host_handle_packet(USBDevice *s, USBPacket *p) |
739 |
{ |
740 |
switch(p->pid) {
|
741 |
case USB_MSG_ATTACH:
|
742 |
s->state = USB_STATE_ATTACHED; |
743 |
return 0; |
744 |
|
745 |
case USB_MSG_DETACH:
|
746 |
s->state = USB_STATE_NOTATTACHED; |
747 |
return 0; |
748 |
|
749 |
case USB_MSG_RESET:
|
750 |
s->remote_wakeup = 0;
|
751 |
s->addr = 0;
|
752 |
s->state = USB_STATE_DEFAULT; |
753 |
s->info->handle_reset(s); |
754 |
return 0; |
755 |
} |
756 |
|
757 |
/* Rest of the PIDs must match our address */
|
758 |
if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr) {
|
759 |
return USB_RET_NODEV;
|
760 |
} |
761 |
|
762 |
switch (p->pid) {
|
763 |
case USB_TOKEN_SETUP:
|
764 |
return do_token_setup(s, p);
|
765 |
|
766 |
case USB_TOKEN_IN:
|
767 |
return do_token_in(s, p);
|
768 |
|
769 |
case USB_TOKEN_OUT:
|
770 |
return do_token_out(s, p);
|
771 |
|
772 |
default:
|
773 |
return USB_RET_STALL;
|
774 |
} |
775 |
} |
776 |
|
777 |
/* returns 1 on problem encountered or 0 for success */
|
778 |
static int usb_linux_update_endp_table(USBHostDevice *s) |
779 |
{ |
780 |
uint8_t *descriptors; |
781 |
uint8_t devep, type, configuration, alt_interface; |
782 |
struct usb_ctrltransfer ct;
|
783 |
int interface, ret, length, i;
|
784 |
|
785 |
ct.bRequestType = USB_DIR_IN; |
786 |
ct.bRequest = USB_REQ_GET_CONFIGURATION; |
787 |
ct.wValue = 0;
|
788 |
ct.wIndex = 0;
|
789 |
ct.wLength = 1;
|
790 |
ct.data = &configuration; |
791 |
ct.timeout = 50;
|
792 |
|
793 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
794 |
if (ret < 0) { |
795 |
perror("usb_linux_update_endp_table");
|
796 |
return 1; |
797 |
} |
798 |
|
799 |
/* in address state */
|
800 |
if (configuration == 0) { |
801 |
return 1; |
802 |
} |
803 |
|
804 |
/* get the desired configuration, interface, and endpoint descriptors
|
805 |
* from device description */
|
806 |
descriptors = &s->descr[18];
|
807 |
length = s->descr_len - 18;
|
808 |
i = 0;
|
809 |
|
810 |
if (descriptors[i + 1] != USB_DT_CONFIG || |
811 |
descriptors[i + 5] != configuration) {
|
812 |
DPRINTF("invalid descriptor data - configuration\n");
|
813 |
return 1; |
814 |
} |
815 |
i += descriptors[i]; |
816 |
|
817 |
while (i < length) {
|
818 |
if (descriptors[i + 1] != USB_DT_INTERFACE || |
819 |
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
820 |
descriptors[i + 4] == 0)) { |
821 |
i += descriptors[i]; |
822 |
continue;
|
823 |
} |
824 |
|
825 |
interface = descriptors[i + 2];
|
826 |
|
827 |
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
828 |
ct.bRequest = USB_REQ_GET_INTERFACE; |
829 |
ct.wValue = 0;
|
830 |
ct.wIndex = interface; |
831 |
ct.wLength = 1;
|
832 |
ct.data = &alt_interface; |
833 |
ct.timeout = 50;
|
834 |
|
835 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
836 |
if (ret < 0) { |
837 |
alt_interface = interface; |
838 |
} |
839 |
|
840 |
/* the current interface descriptor is the active interface
|
841 |
* and has endpoints */
|
842 |
if (descriptors[i + 3] != alt_interface) { |
843 |
i += descriptors[i]; |
844 |
continue;
|
845 |
} |
846 |
|
847 |
/* advance to the endpoints */
|
848 |
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) { |
849 |
i += descriptors[i]; |
850 |
} |
851 |
|
852 |
if (i >= length)
|
853 |
break;
|
854 |
|
855 |
while (i < length) {
|
856 |
if (descriptors[i + 1] != USB_DT_ENDPOINT) { |
857 |
break;
|
858 |
} |
859 |
|
860 |
devep = descriptors[i + 2];
|
861 |
switch (descriptors[i + 3] & 0x3) { |
862 |
case 0x00: |
863 |
type = USBDEVFS_URB_TYPE_CONTROL; |
864 |
break;
|
865 |
case 0x01: |
866 |
type = USBDEVFS_URB_TYPE_ISO; |
867 |
break;
|
868 |
case 0x02: |
869 |
type = USBDEVFS_URB_TYPE_BULK; |
870 |
break;
|
871 |
case 0x03: |
872 |
type = USBDEVFS_URB_TYPE_INTERRUPT; |
873 |
break;
|
874 |
default:
|
875 |
DPRINTF("usb_host: malformed endpoint type\n");
|
876 |
type = USBDEVFS_URB_TYPE_BULK; |
877 |
} |
878 |
s->endp_table[(devep & 0xf) - 1].type = type; |
879 |
s->endp_table[(devep & 0xf) - 1].halted = 0; |
880 |
|
881 |
i += descriptors[i]; |
882 |
} |
883 |
} |
884 |
return 0; |
885 |
} |
886 |
|
887 |
static int usb_host_open(USBHostDevice *dev, int bus_num, |
888 |
int addr, const char *prod_name) |
889 |
{ |
890 |
int fd = -1, ret; |
891 |
struct usbdevfs_connectinfo ci;
|
892 |
char buf[1024]; |
893 |
|
894 |
if (dev->fd != -1) { |
895 |
goto fail;
|
896 |
} |
897 |
printf("husb: open device %d.%d\n", bus_num, addr);
|
898 |
|
899 |
if (!usb_host_device_path) {
|
900 |
perror("husb: USB Host Device Path not set");
|
901 |
goto fail;
|
902 |
} |
903 |
snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, |
904 |
bus_num, addr); |
905 |
fd = open(buf, O_RDWR | O_NONBLOCK); |
906 |
if (fd < 0) { |
907 |
perror(buf); |
908 |
goto fail;
|
909 |
} |
910 |
DPRINTF("husb: opened %s\n", buf);
|
911 |
|
912 |
dev->bus_num = bus_num; |
913 |
dev->addr = addr; |
914 |
dev->fd = fd; |
915 |
|
916 |
/* read the device description */
|
917 |
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
918 |
if (dev->descr_len <= 0) { |
919 |
perror("husb: reading device data failed");
|
920 |
goto fail;
|
921 |
} |
922 |
|
923 |
#ifdef DEBUG
|
924 |
{ |
925 |
int x;
|
926 |
printf("=== begin dumping device descriptor data ===\n");
|
927 |
for (x = 0; x < dev->descr_len; x++) { |
928 |
printf("%02x ", dev->descr[x]);
|
929 |
} |
930 |
printf("\n=== end dumping device descriptor data ===\n");
|
931 |
} |
932 |
#endif
|
933 |
|
934 |
|
935 |
/*
|
936 |
* Initial configuration is -1 which makes us claim first
|
937 |
* available config. We used to start with 1, which does not
|
938 |
* always work. I've seen devices where first config starts
|
939 |
* with 2.
|
940 |
*/
|
941 |
if (!usb_host_claim_interfaces(dev, -1)) { |
942 |
goto fail;
|
943 |
} |
944 |
|
945 |
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
946 |
if (ret < 0) { |
947 |
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
948 |
goto fail;
|
949 |
} |
950 |
|
951 |
printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
|
952 |
|
953 |
ret = usb_linux_update_endp_table(dev); |
954 |
if (ret) {
|
955 |
goto fail;
|
956 |
} |
957 |
|
958 |
if (ci.slow) {
|
959 |
dev->dev.speed = USB_SPEED_LOW; |
960 |
} else {
|
961 |
dev->dev.speed = USB_SPEED_HIGH; |
962 |
} |
963 |
|
964 |
if (!prod_name || prod_name[0] == '\0') { |
965 |
snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
966 |
"host:%d.%d", bus_num, addr);
|
967 |
} else {
|
968 |
pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
969 |
prod_name); |
970 |
} |
971 |
|
972 |
/* USB devio uses 'write' flag to check for async completions */
|
973 |
qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
|
974 |
|
975 |
usb_device_attach(&dev->dev); |
976 |
return 0; |
977 |
|
978 |
fail:
|
979 |
dev->fd = -1;
|
980 |
if (fd != -1) { |
981 |
close(fd); |
982 |
} |
983 |
return -1; |
984 |
} |
985 |
|
986 |
static int usb_host_close(USBHostDevice *dev) |
987 |
{ |
988 |
if (dev->fd == -1) { |
989 |
return -1; |
990 |
} |
991 |
|
992 |
qemu_set_fd_handler(dev->fd, NULL, NULL, NULL); |
993 |
dev->closing = 1;
|
994 |
async_complete(dev); |
995 |
dev->closing = 0;
|
996 |
usb_device_detach(&dev->dev); |
997 |
ioctl(dev->fd, USBDEVFS_RESET); |
998 |
close(dev->fd); |
999 |
dev->fd = -1;
|
1000 |
return 0; |
1001 |
} |
1002 |
|
1003 |
static void usb_host_exit_notifier(struct Notifier* n) |
1004 |
{ |
1005 |
USBHostDevice *s = container_of(n, USBHostDevice, exit); |
1006 |
|
1007 |
if (s->fd != -1) { |
1008 |
ioctl(s->fd, USBDEVFS_RESET); |
1009 |
} |
1010 |
} |
1011 |
|
1012 |
static int usb_host_initfn(USBDevice *dev) |
1013 |
{ |
1014 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
1015 |
|
1016 |
dev->auto_attach = 0;
|
1017 |
s->fd = -1;
|
1018 |
QTAILQ_INSERT_TAIL(&hostdevs, s, next); |
1019 |
s->exit.notify = usb_host_exit_notifier; |
1020 |
qemu_add_exit_notifier(&s->exit); |
1021 |
usb_host_auto_check(NULL);
|
1022 |
return 0; |
1023 |
} |
1024 |
|
1025 |
static struct USBDeviceInfo usb_host_dev_info = { |
1026 |
.product_desc = "USB Host Device",
|
1027 |
.qdev.name = "usb-host",
|
1028 |
.qdev.size = sizeof(USBHostDevice),
|
1029 |
.init = usb_host_initfn, |
1030 |
.handle_packet = usb_host_handle_packet, |
1031 |
.handle_reset = usb_host_handle_reset, |
1032 |
.handle_destroy = usb_host_handle_destroy, |
1033 |
.usbdevice_name = "host",
|
1034 |
.usbdevice_init = usb_host_device_open, |
1035 |
.qdev.props = (Property[]) { |
1036 |
DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0), |
1037 |
DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0), |
1038 |
DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0), |
1039 |
DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0), |
1040 |
DEFINE_PROP_END_OF_LIST(), |
1041 |
}, |
1042 |
}; |
1043 |
|
1044 |
static void usb_host_register_devices(void) |
1045 |
{ |
1046 |
usb_qdev_register(&usb_host_dev_info); |
1047 |
} |
1048 |
device_init(usb_host_register_devices) |
1049 |
|
1050 |
USBDevice *usb_host_device_open(const char *devname) |
1051 |
{ |
1052 |
struct USBAutoFilter filter;
|
1053 |
USBDevice *dev; |
1054 |
char *p;
|
1055 |
|
1056 |
dev = usb_create(NULL /* FIXME */, "usb-host"); |
1057 |
|
1058 |
if (strstr(devname, "auto:")) { |
1059 |
if (parse_filter(devname, &filter) < 0) { |
1060 |
goto fail;
|
1061 |
} |
1062 |
} else {
|
1063 |
if ((p = strchr(devname, '.'))) { |
1064 |
filter.bus_num = strtoul(devname, NULL, 0); |
1065 |
filter.addr = strtoul(p + 1, NULL, 0); |
1066 |
filter.vendor_id = 0;
|
1067 |
filter.product_id = 0;
|
1068 |
} else if ((p = strchr(devname, ':'))) { |
1069 |
filter.bus_num = 0;
|
1070 |
filter.addr = 0;
|
1071 |
filter.vendor_id = strtoul(devname, NULL, 16); |
1072 |
filter.product_id = strtoul(p + 1, NULL, 16); |
1073 |
} else {
|
1074 |
goto fail;
|
1075 |
} |
1076 |
} |
1077 |
|
1078 |
qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num);
|
1079 |
qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr);
|
1080 |
qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
|
1081 |
qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
|
1082 |
qdev_init_nofail(&dev->qdev); |
1083 |
return dev;
|
1084 |
|
1085 |
fail:
|
1086 |
qdev_free(&dev->qdev); |
1087 |
return NULL; |
1088 |
} |
1089 |
|
1090 |
int usb_host_device_close(const char *devname) |
1091 |
{ |
1092 |
#if 0
|
1093 |
char product_name[PRODUCT_NAME_SZ];
|
1094 |
int bus_num, addr;
|
1095 |
USBHostDevice *s;
|
1096 |
|
1097 |
if (strstr(devname, "auto:")) {
|
1098 |
return usb_host_auto_del(devname);
|
1099 |
}
|
1100 |
if (usb_host_find_device(&bus_num, &addr, product_name,
|
1101 |
sizeof(product_name), devname) < 0) {
|
1102 |
return -1;
|
1103 |
}
|
1104 |
s = hostdev_find(bus_num, addr);
|
1105 |
if (s) {
|
1106 |
usb_device_delete_addr(s->bus_num, s->dev.addr);
|
1107 |
return 0;
|
1108 |
}
|
1109 |
#endif
|
1110 |
|
1111 |
return -1; |
1112 |
} |
1113 |
|
1114 |
static int get_tag_value(char *buf, int buf_size, |
1115 |
const char *str, const char *tag, |
1116 |
const char *stopchars) |
1117 |
{ |
1118 |
const char *p; |
1119 |
char *q;
|
1120 |
p = strstr(str, tag); |
1121 |
if (!p) {
|
1122 |
return -1; |
1123 |
} |
1124 |
p += strlen(tag); |
1125 |
while (qemu_isspace(*p)) {
|
1126 |
p++; |
1127 |
} |
1128 |
q = buf; |
1129 |
while (*p != '\0' && !strchr(stopchars, *p)) { |
1130 |
if ((q - buf) < (buf_size - 1)) { |
1131 |
*q++ = *p; |
1132 |
} |
1133 |
p++; |
1134 |
} |
1135 |
*q = '\0';
|
1136 |
return q - buf;
|
1137 |
} |
1138 |
|
1139 |
/*
|
1140 |
* Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
|
1141 |
* host's USB devices. This is legacy support since many distributions
|
1142 |
* are moving to /sys/bus/usb
|
1143 |
*/
|
1144 |
static int usb_host_scan_dev(void *opaque, USBScanFunc *func) |
1145 |
{ |
1146 |
FILE *f = NULL;
|
1147 |
char line[1024]; |
1148 |
char buf[1024]; |
1149 |
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
|
1150 |
char product_name[512]; |
1151 |
int ret = 0; |
1152 |
|
1153 |
if (!usb_host_device_path) {
|
1154 |
perror("husb: USB Host Device Path not set");
|
1155 |
goto the_end;
|
1156 |
} |
1157 |
snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); |
1158 |
f = fopen(line, "r");
|
1159 |
if (!f) {
|
1160 |
perror("husb: cannot open devices file");
|
1161 |
goto the_end;
|
1162 |
} |
1163 |
|
1164 |
device_count = 0;
|
1165 |
bus_num = addr = speed = class_id = product_id = vendor_id = 0;
|
1166 |
for(;;) {
|
1167 |
if (fgets(line, sizeof(line), f) == NULL) { |
1168 |
break;
|
1169 |
} |
1170 |
if (strlen(line) > 0) { |
1171 |
line[strlen(line) - 1] = '\0'; |
1172 |
} |
1173 |
if (line[0] == 'T' && line[1] == ':') { |
1174 |
if (device_count && (vendor_id || product_id)) {
|
1175 |
/* New device. Add the previously discovered device. */
|
1176 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1177 |
product_id, product_name, speed); |
1178 |
if (ret) {
|
1179 |
goto the_end;
|
1180 |
} |
1181 |
} |
1182 |
if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) { |
1183 |
goto fail;
|
1184 |
} |
1185 |
bus_num = atoi(buf); |
1186 |
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) { |
1187 |
goto fail;
|
1188 |
} |
1189 |
addr = atoi(buf); |
1190 |
if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) { |
1191 |
goto fail;
|
1192 |
} |
1193 |
if (!strcmp(buf, "480")) { |
1194 |
speed = USB_SPEED_HIGH; |
1195 |
} else if (!strcmp(buf, "1.5")) { |
1196 |
speed = USB_SPEED_LOW; |
1197 |
} else {
|
1198 |
speed = USB_SPEED_FULL; |
1199 |
} |
1200 |
product_name[0] = '\0'; |
1201 |
class_id = 0xff;
|
1202 |
device_count++; |
1203 |
product_id = 0;
|
1204 |
vendor_id = 0;
|
1205 |
} else if (line[0] == 'P' && line[1] == ':') { |
1206 |
if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) { |
1207 |
goto fail;
|
1208 |
} |
1209 |
vendor_id = strtoul(buf, NULL, 16); |
1210 |
if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) { |
1211 |
goto fail;
|
1212 |
} |
1213 |
product_id = strtoul(buf, NULL, 16); |
1214 |
} else if (line[0] == 'S' && line[1] == ':') { |
1215 |
if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) { |
1216 |
goto fail;
|
1217 |
} |
1218 |
pstrcpy(product_name, sizeof(product_name), buf);
|
1219 |
} else if (line[0] == 'D' && line[1] == ':') { |
1220 |
if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) { |
1221 |
goto fail;
|
1222 |
} |
1223 |
class_id = strtoul(buf, NULL, 16); |
1224 |
} |
1225 |
fail: ;
|
1226 |
} |
1227 |
if (device_count && (vendor_id || product_id)) {
|
1228 |
/* Add the last device. */
|
1229 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1230 |
product_id, product_name, speed); |
1231 |
} |
1232 |
the_end:
|
1233 |
if (f) {
|
1234 |
fclose(f); |
1235 |
} |
1236 |
return ret;
|
1237 |
} |
1238 |
|
1239 |
/*
|
1240 |
* Read sys file-system device file
|
1241 |
*
|
1242 |
* @line address of buffer to put file contents in
|
1243 |
* @line_size size of line
|
1244 |
* @device_file path to device file (printf format string)
|
1245 |
* @device_name device being opened (inserted into device_file)
|
1246 |
*
|
1247 |
* @return 0 failed, 1 succeeded ('line' contains data)
|
1248 |
*/
|
1249 |
static int usb_host_read_file(char *line, size_t line_size, |
1250 |
const char *device_file, const char *device_name) |
1251 |
{ |
1252 |
FILE *f; |
1253 |
int ret = 0; |
1254 |
char filename[PATH_MAX];
|
1255 |
|
1256 |
snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
|
1257 |
device_file); |
1258 |
f = fopen(filename, "r");
|
1259 |
if (f) {
|
1260 |
ret = fgets(line, line_size, f) != NULL;
|
1261 |
fclose(f); |
1262 |
} |
1263 |
|
1264 |
return ret;
|
1265 |
} |
1266 |
|
1267 |
/*
|
1268 |
* Use /sys/bus/usb/devices/ directory to determine host's USB
|
1269 |
* devices.
|
1270 |
*
|
1271 |
* This code is based on Robert Schiele's original patches posted to
|
1272 |
* the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
|
1273 |
*/
|
1274 |
static int usb_host_scan_sys(void *opaque, USBScanFunc *func) |
1275 |
{ |
1276 |
DIR *dir = NULL;
|
1277 |
char line[1024]; |
1278 |
int bus_num, addr, speed, class_id, product_id, vendor_id;
|
1279 |
int ret = 0; |
1280 |
char product_name[512]; |
1281 |
struct dirent *de;
|
1282 |
|
1283 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
1284 |
if (!dir) {
|
1285 |
perror("husb: cannot open devices directory");
|
1286 |
goto the_end;
|
1287 |
} |
1288 |
|
1289 |
while ((de = readdir(dir))) {
|
1290 |
if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { |
1291 |
char *tmpstr = de->d_name;
|
1292 |
if (!strncmp(de->d_name, "usb", 3)) { |
1293 |
tmpstr += 3;
|
1294 |
} |
1295 |
bus_num = atoi(tmpstr); |
1296 |
|
1297 |
if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) { |
1298 |
goto the_end;
|
1299 |
} |
1300 |
if (sscanf(line, "%d", &addr) != 1) { |
1301 |
goto the_end;
|
1302 |
} |
1303 |
if (!usb_host_read_file(line, sizeof(line), "bDeviceClass", |
1304 |
de->d_name)) { |
1305 |
goto the_end;
|
1306 |
} |
1307 |
if (sscanf(line, "%x", &class_id) != 1) { |
1308 |
goto the_end;
|
1309 |
} |
1310 |
|
1311 |
if (!usb_host_read_file(line, sizeof(line), "idVendor", |
1312 |
de->d_name)) { |
1313 |
goto the_end;
|
1314 |
} |
1315 |
if (sscanf(line, "%x", &vendor_id) != 1) { |
1316 |
goto the_end;
|
1317 |
} |
1318 |
if (!usb_host_read_file(line, sizeof(line), "idProduct", |
1319 |
de->d_name)) { |
1320 |
goto the_end;
|
1321 |
} |
1322 |
if (sscanf(line, "%x", &product_id) != 1) { |
1323 |
goto the_end;
|
1324 |
} |
1325 |
if (!usb_host_read_file(line, sizeof(line), "product", |
1326 |
de->d_name)) { |
1327 |
*product_name = 0;
|
1328 |
} else {
|
1329 |
if (strlen(line) > 0) { |
1330 |
line[strlen(line) - 1] = '\0'; |
1331 |
} |
1332 |
pstrcpy(product_name, sizeof(product_name), line);
|
1333 |
} |
1334 |
|
1335 |
if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) { |
1336 |
goto the_end;
|
1337 |
} |
1338 |
if (!strcmp(line, "480\n")) { |
1339 |
speed = USB_SPEED_HIGH; |
1340 |
} else if (!strcmp(line, "1.5\n")) { |
1341 |
speed = USB_SPEED_LOW; |
1342 |
} else {
|
1343 |
speed = USB_SPEED_FULL; |
1344 |
} |
1345 |
|
1346 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1347 |
product_id, product_name, speed); |
1348 |
if (ret) {
|
1349 |
goto the_end;
|
1350 |
} |
1351 |
} |
1352 |
} |
1353 |
the_end:
|
1354 |
if (dir) {
|
1355 |
closedir(dir); |
1356 |
} |
1357 |
return ret;
|
1358 |
} |
1359 |
|
1360 |
/*
|
1361 |
* Determine how to access the host's USB devices and call the
|
1362 |
* specific support function.
|
1363 |
*/
|
1364 |
static int usb_host_scan(void *opaque, USBScanFunc *func) |
1365 |
{ |
1366 |
Monitor *mon = cur_mon; |
1367 |
FILE *f = NULL;
|
1368 |
DIR *dir = NULL;
|
1369 |
int ret = 0; |
1370 |
const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; |
1371 |
char devpath[PATH_MAX];
|
1372 |
|
1373 |
/* only check the host once */
|
1374 |
if (!usb_fs_type) {
|
1375 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
1376 |
if (dir) {
|
1377 |
/* devices found in /dev/bus/usb/ (yes - not a mistake!) */
|
1378 |
strcpy(devpath, USBDEVBUS_PATH); |
1379 |
usb_fs_type = USB_FS_SYS; |
1380 |
closedir(dir); |
1381 |
DPRINTF(USBDBG_DEVOPENED, USBSYSBUS_PATH); |
1382 |
goto found_devices;
|
1383 |
} |
1384 |
f = fopen(USBPROCBUS_PATH "/devices", "r"); |
1385 |
if (f) {
|
1386 |
/* devices found in /proc/bus/usb/ */
|
1387 |
strcpy(devpath, USBPROCBUS_PATH); |
1388 |
usb_fs_type = USB_FS_PROC; |
1389 |
fclose(f); |
1390 |
DPRINTF(USBDBG_DEVOPENED, USBPROCBUS_PATH); |
1391 |
goto found_devices;
|
1392 |
} |
1393 |
/* try additional methods if an access method hasn't been found yet */
|
1394 |
f = fopen(USBDEVBUS_PATH "/devices", "r"); |
1395 |
if (f) {
|
1396 |
/* devices found in /dev/bus/usb/ */
|
1397 |
strcpy(devpath, USBDEVBUS_PATH); |
1398 |
usb_fs_type = USB_FS_DEV; |
1399 |
fclose(f); |
1400 |
DPRINTF(USBDBG_DEVOPENED, USBDEVBUS_PATH); |
1401 |
goto found_devices;
|
1402 |
} |
1403 |
found_devices:
|
1404 |
if (!usb_fs_type) {
|
1405 |
if (mon) {
|
1406 |
monitor_printf(mon, "husb: unable to access USB devices\n");
|
1407 |
} |
1408 |
return -ENOENT;
|
1409 |
} |
1410 |
|
1411 |
/* the module setting (used later for opening devices) */
|
1412 |
usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
|
1413 |
strcpy(usb_host_device_path, devpath); |
1414 |
if (mon) {
|
1415 |
monitor_printf(mon, "husb: using %s file-system with %s\n",
|
1416 |
fs_type[usb_fs_type], usb_host_device_path); |
1417 |
} |
1418 |
} |
1419 |
|
1420 |
switch (usb_fs_type) {
|
1421 |
case USB_FS_PROC:
|
1422 |
case USB_FS_DEV:
|
1423 |
ret = usb_host_scan_dev(opaque, func); |
1424 |
break;
|
1425 |
case USB_FS_SYS:
|
1426 |
ret = usb_host_scan_sys(opaque, func); |
1427 |
break;
|
1428 |
default:
|
1429 |
ret = -EINVAL; |
1430 |
break;
|
1431 |
} |
1432 |
return ret;
|
1433 |
} |
1434 |
|
1435 |
static QEMUTimer *usb_auto_timer;
|
1436 |
|
1437 |
static int usb_host_auto_scan(void *opaque, int bus_num, int addr, |
1438 |
int class_id, int vendor_id, int product_id, |
1439 |
const char *product_name, int speed) |
1440 |
{ |
1441 |
struct USBAutoFilter *f;
|
1442 |
struct USBHostDevice *s;
|
1443 |
|
1444 |
/* Ignore hubs */
|
1445 |
if (class_id == 9) |
1446 |
return 0; |
1447 |
|
1448 |
QTAILQ_FOREACH(s, &hostdevs, next) { |
1449 |
f = &s->match; |
1450 |
|
1451 |
if (f->bus_num > 0 && f->bus_num != bus_num) { |
1452 |
continue;
|
1453 |
} |
1454 |
if (f->addr > 0 && f->addr != addr) { |
1455 |
continue;
|
1456 |
} |
1457 |
|
1458 |
if (f->vendor_id > 0 && f->vendor_id != vendor_id) { |
1459 |
continue;
|
1460 |
} |
1461 |
|
1462 |
if (f->product_id > 0 && f->product_id != product_id) { |
1463 |
continue;
|
1464 |
} |
1465 |
/* We got a match */
|
1466 |
|
1467 |
/* Already attached ? */
|
1468 |
if (s->fd != -1) { |
1469 |
return 0; |
1470 |
} |
1471 |
DPRINTF("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
|
1472 |
|
1473 |
usb_host_open(s, bus_num, addr, product_name); |
1474 |
} |
1475 |
|
1476 |
return 0; |
1477 |
} |
1478 |
|
1479 |
static void usb_host_auto_check(void *unused) |
1480 |
{ |
1481 |
struct USBHostDevice *s;
|
1482 |
int unconnected = 0; |
1483 |
|
1484 |
usb_host_scan(NULL, usb_host_auto_scan);
|
1485 |
|
1486 |
QTAILQ_FOREACH(s, &hostdevs, next) { |
1487 |
if (s->fd == -1) { |
1488 |
unconnected++; |
1489 |
} |
1490 |
} |
1491 |
|
1492 |
if (unconnected == 0) { |
1493 |
/* nothing to watch */
|
1494 |
if (usb_auto_timer) {
|
1495 |
qemu_del_timer(usb_auto_timer); |
1496 |
} |
1497 |
return;
|
1498 |
} |
1499 |
|
1500 |
if (!usb_auto_timer) {
|
1501 |
usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_check, NULL);
|
1502 |
if (!usb_auto_timer) {
|
1503 |
return;
|
1504 |
} |
1505 |
} |
1506 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
1507 |
} |
1508 |
|
1509 |
/*
|
1510 |
* Autoconnect filter
|
1511 |
* Format:
|
1512 |
* auto:bus:dev[:vid:pid]
|
1513 |
* auto:bus.dev[:vid:pid]
|
1514 |
*
|
1515 |
* bus - bus number (dec, * means any)
|
1516 |
* dev - device number (dec, * means any)
|
1517 |
* vid - vendor id (hex, * means any)
|
1518 |
* pid - product id (hex, * means any)
|
1519 |
*
|
1520 |
* See 'lsusb' output.
|
1521 |
*/
|
1522 |
static int parse_filter(const char *spec, struct USBAutoFilter *f) |
1523 |
{ |
1524 |
enum { BUS, DEV, VID, PID, DONE };
|
1525 |
const char *p = spec; |
1526 |
int i;
|
1527 |
|
1528 |
f->bus_num = 0;
|
1529 |
f->addr = 0;
|
1530 |
f->vendor_id = 0;
|
1531 |
f->product_id = 0;
|
1532 |
|
1533 |
for (i = BUS; i < DONE; i++) {
|
1534 |
p = strpbrk(p, ":.");
|
1535 |
if (!p) {
|
1536 |
break;
|
1537 |
} |
1538 |
p++; |
1539 |
|
1540 |
if (*p == '*') { |
1541 |
continue;
|
1542 |
} |
1543 |
switch(i) {
|
1544 |
case BUS: f->bus_num = strtol(p, NULL, 10); break; |
1545 |
case DEV: f->addr = strtol(p, NULL, 10); break; |
1546 |
case VID: f->vendor_id = strtol(p, NULL, 16); break; |
1547 |
case PID: f->product_id = strtol(p, NULL, 16); break; |
1548 |
} |
1549 |
} |
1550 |
|
1551 |
if (i < DEV) {
|
1552 |
fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
|
1553 |
return -1; |
1554 |
} |
1555 |
|
1556 |
return 0; |
1557 |
} |
1558 |
|
1559 |
/**********************/
|
1560 |
/* USB host device info */
|
1561 |
|
1562 |
struct usb_class_info {
|
1563 |
int class;
|
1564 |
const char *class_name; |
1565 |
}; |
1566 |
|
1567 |
static const struct usb_class_info usb_class_info[] = { |
1568 |
{ USB_CLASS_AUDIO, "Audio"},
|
1569 |
{ USB_CLASS_COMM, "Communication"},
|
1570 |
{ USB_CLASS_HID, "HID"},
|
1571 |
{ USB_CLASS_HUB, "Hub" },
|
1572 |
{ USB_CLASS_PHYSICAL, "Physical" },
|
1573 |
{ USB_CLASS_PRINTER, "Printer" },
|
1574 |
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
1575 |
{ USB_CLASS_CDC_DATA, "Data" },
|
1576 |
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
1577 |
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
1578 |
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
1579 |
{ USB_CLASS_CSCID, "Smart Card" },
|
1580 |
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
1581 |
{ -1, NULL } |
1582 |
}; |
1583 |
|
1584 |
static const char *usb_class_str(uint8_t class) |
1585 |
{ |
1586 |
const struct usb_class_info *p; |
1587 |
for(p = usb_class_info; p->class != -1; p++) { |
1588 |
if (p->class == class) {
|
1589 |
break;
|
1590 |
} |
1591 |
} |
1592 |
return p->class_name;
|
1593 |
} |
1594 |
|
1595 |
static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id, |
1596 |
int vendor_id, int product_id, |
1597 |
const char *product_name, |
1598 |
int speed)
|
1599 |
{ |
1600 |
const char *class_str, *speed_str; |
1601 |
|
1602 |
switch(speed) {
|
1603 |
case USB_SPEED_LOW:
|
1604 |
speed_str = "1.5";
|
1605 |
break;
|
1606 |
case USB_SPEED_FULL:
|
1607 |
speed_str = "12";
|
1608 |
break;
|
1609 |
case USB_SPEED_HIGH:
|
1610 |
speed_str = "480";
|
1611 |
break;
|
1612 |
default:
|
1613 |
speed_str = "?";
|
1614 |
break;
|
1615 |
} |
1616 |
|
1617 |
monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n",
|
1618 |
bus_num, addr, speed_str); |
1619 |
class_str = usb_class_str(class_id); |
1620 |
if (class_str) {
|
1621 |
monitor_printf(mon, " %s:", class_str);
|
1622 |
} else {
|
1623 |
monitor_printf(mon, " Class %02x:", class_id);
|
1624 |
} |
1625 |
monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
|
1626 |
if (product_name[0] != '\0') { |
1627 |
monitor_printf(mon, ", %s", product_name);
|
1628 |
} |
1629 |
monitor_printf(mon, "\n");
|
1630 |
} |
1631 |
|
1632 |
static int usb_host_info_device(void *opaque, int bus_num, int addr, |
1633 |
int class_id,
|
1634 |
int vendor_id, int product_id, |
1635 |
const char *product_name, |
1636 |
int speed)
|
1637 |
{ |
1638 |
Monitor *mon = opaque; |
1639 |
|
1640 |
usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id, |
1641 |
product_name, speed); |
1642 |
return 0; |
1643 |
} |
1644 |
|
1645 |
static void dec2str(int val, char *str, size_t size) |
1646 |
{ |
1647 |
if (val == 0) { |
1648 |
snprintf(str, size, "*");
|
1649 |
} else {
|
1650 |
snprintf(str, size, "%d", val);
|
1651 |
} |
1652 |
} |
1653 |
|
1654 |
static void hex2str(int val, char *str, size_t size) |
1655 |
{ |
1656 |
if (val == 0) { |
1657 |
snprintf(str, size, "*");
|
1658 |
} else {
|
1659 |
snprintf(str, size, "%04x", val);
|
1660 |
} |
1661 |
} |
1662 |
|
1663 |
void usb_host_info(Monitor *mon)
|
1664 |
{ |
1665 |
struct USBAutoFilter *f;
|
1666 |
struct USBHostDevice *s;
|
1667 |
|
1668 |
usb_host_scan(mon, usb_host_info_device); |
1669 |
|
1670 |
if (QTAILQ_EMPTY(&hostdevs)) {
|
1671 |
return;
|
1672 |
} |
1673 |
|
1674 |
monitor_printf(mon, " Auto filters:\n");
|
1675 |
QTAILQ_FOREACH(s, &hostdevs, next) { |
1676 |
char bus[10], addr[10], vid[10], pid[10]; |
1677 |
f = &s->match; |
1678 |
dec2str(f->bus_num, bus, sizeof(bus));
|
1679 |
dec2str(f->addr, addr, sizeof(addr));
|
1680 |
hex2str(f->vendor_id, vid, sizeof(vid));
|
1681 |
hex2str(f->product_id, pid, sizeof(pid));
|
1682 |
monitor_printf(mon, " Device %s.%s ID %s:%s\n",
|
1683 |
bus, addr, vid, pid); |
1684 |
} |
1685 |
} |