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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
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* 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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* 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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#include "qemu-common.h" |
34 |
#include "qemu-timer.h" |
35 |
#include "console.h" |
36 |
|
37 |
#if defined(__linux__)
|
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#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; |
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uint16_t wLength; |
63 |
}; |
64 |
|
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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 |
static int usb_host_find_device(int *pbus_num, int *paddr, |
69 |
char *product_name, int product_name_size, |
70 |
const char *devname); |
71 |
//#define DEBUG
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72 |
|
73 |
#ifdef DEBUG
|
74 |
#define dprintf printf
|
75 |
#else
|
76 |
#define dprintf(...)
|
77 |
#endif
|
78 |
|
79 |
#define USBDBG_DEVOPENED "husb: opened %s/devices\n" |
80 |
|
81 |
#define USBPROCBUS_PATH "/proc/bus/usb" |
82 |
#define PRODUCT_NAME_SZ 32 |
83 |
#define MAX_ENDPOINTS 16 |
84 |
#define USBDEVBUS_PATH "/dev/bus/usb" |
85 |
#define USBSYSBUS_PATH "/sys/bus/usb" |
86 |
|
87 |
static char *usb_host_device_path; |
88 |
|
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#define USB_FS_NONE 0 |
90 |
#define USB_FS_PROC 1 |
91 |
#define USB_FS_DEV 2 |
92 |
#define USB_FS_SYS 3 |
93 |
|
94 |
static int usb_fs_type; |
95 |
|
96 |
/* endpoint association data */
|
97 |
struct endp_data {
|
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uint8_t type; |
99 |
uint8_t halted; |
100 |
}; |
101 |
|
102 |
enum {
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CTRL_STATE_IDLE = 0,
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CTRL_STATE_SETUP, |
105 |
CTRL_STATE_DATA, |
106 |
CTRL_STATE_ACK |
107 |
}; |
108 |
|
109 |
/*
|
110 |
* Control transfer state.
|
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* Note that 'buffer' _must_ follow 'req' field because
|
112 |
* we need contigious buffer when we submit control URB.
|
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*/
|
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struct ctrl_struct {
|
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uint16_t len; |
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uint16_t offset; |
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uint8_t state; |
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struct usb_ctrlrequest req;
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uint8_t buffer[1024];
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}; |
121 |
|
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typedef struct USBHostDevice { |
123 |
USBDevice dev; |
124 |
int fd;
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125 |
|
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uint8_t descr[1024];
|
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int descr_len;
|
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int configuration;
|
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int ninterfaces;
|
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int closing;
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131 |
|
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struct ctrl_struct ctrl;
|
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struct endp_data endp_table[MAX_ENDPOINTS];
|
134 |
|
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/* Host side address */
|
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int bus_num;
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int addr;
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138 |
|
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struct USBHostDevice *next;
|
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} USBHostDevice; |
141 |
|
142 |
static int is_isoc(USBHostDevice *s, int ep) |
143 |
{ |
144 |
return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; |
145 |
} |
146 |
|
147 |
static int is_halted(USBHostDevice *s, int ep) |
148 |
{ |
149 |
return s->endp_table[ep - 1].halted; |
150 |
} |
151 |
|
152 |
static void clear_halt(USBHostDevice *s, int ep) |
153 |
{ |
154 |
s->endp_table[ep - 1].halted = 0; |
155 |
} |
156 |
|
157 |
static void set_halt(USBHostDevice *s, int ep) |
158 |
{ |
159 |
s->endp_table[ep - 1].halted = 1; |
160 |
} |
161 |
|
162 |
static USBHostDevice *hostdev_list;
|
163 |
|
164 |
static void hostdev_link(USBHostDevice *dev) |
165 |
{ |
166 |
dev->next = hostdev_list; |
167 |
hostdev_list = dev; |
168 |
} |
169 |
|
170 |
static void hostdev_unlink(USBHostDevice *dev) |
171 |
{ |
172 |
USBHostDevice *pdev = hostdev_list; |
173 |
USBHostDevice **prev = &hostdev_list; |
174 |
|
175 |
while (pdev) {
|
176 |
if (pdev == dev) {
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*prev = dev->next; |
178 |
return;
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179 |
} |
180 |
|
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prev = &pdev->next; |
182 |
pdev = pdev->next; |
183 |
} |
184 |
} |
185 |
|
186 |
static USBHostDevice *hostdev_find(int bus_num, int addr) |
187 |
{ |
188 |
USBHostDevice *s = hostdev_list; |
189 |
while (s) {
|
190 |
if (s->bus_num == bus_num && s->addr == addr)
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191 |
return s;
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192 |
s = s->next; |
193 |
} |
194 |
return NULL; |
195 |
} |
196 |
|
197 |
/*
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198 |
* Async URB state.
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199 |
* We always allocate one isoc descriptor even for bulk transfers
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200 |
* to simplify allocation and casts.
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*/
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typedef struct AsyncURB |
203 |
{ |
204 |
struct usbdevfs_urb urb;
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struct usbdevfs_iso_packet_desc isocpd;
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206 |
|
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USBPacket *packet; |
208 |
USBHostDevice *hdev; |
209 |
} AsyncURB; |
210 |
|
211 |
static AsyncURB *async_alloc(void) |
212 |
{ |
213 |
return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); |
214 |
} |
215 |
|
216 |
static void async_free(AsyncURB *aurb) |
217 |
{ |
218 |
qemu_free(aurb); |
219 |
} |
220 |
|
221 |
static void async_complete_ctrl(USBHostDevice *s, USBPacket *p) |
222 |
{ |
223 |
switch(s->ctrl.state) {
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224 |
case CTRL_STATE_SETUP:
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225 |
if (p->len < s->ctrl.len)
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226 |
s->ctrl.len = p->len; |
227 |
s->ctrl.state = CTRL_STATE_DATA; |
228 |
p->len = 8;
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229 |
break;
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230 |
|
231 |
case CTRL_STATE_ACK:
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232 |
s->ctrl.state = CTRL_STATE_IDLE; |
233 |
p->len = 0;
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234 |
break;
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235 |
|
236 |
default:
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237 |
break;
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238 |
} |
239 |
} |
240 |
|
241 |
static void async_complete(void *opaque) |
242 |
{ |
243 |
USBHostDevice *s = opaque; |
244 |
AsyncURB *aurb; |
245 |
|
246 |
while (1) { |
247 |
USBPacket *p; |
248 |
|
249 |
int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
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250 |
if (r < 0) { |
251 |
if (errno == EAGAIN)
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252 |
return;
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253 |
|
254 |
if (errno == ENODEV && !s->closing) {
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255 |
printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr);
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256 |
usb_device_del_addr(0, s->dev.addr);
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257 |
return;
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258 |
} |
259 |
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dprintf("husb: async. reap urb failed errno %d\n", errno);
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return;
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262 |
} |
263 |
|
264 |
p = aurb->packet; |
265 |
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dprintf("husb: async completed. aurb %p status %d alen %d\n",
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aurb, aurb->urb.status, aurb->urb.actual_length); |
268 |
|
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if (p) {
|
270 |
switch (aurb->urb.status) {
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271 |
case 0: |
272 |
p->len = aurb->urb.actual_length; |
273 |
if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL)
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274 |
async_complete_ctrl(s, p); |
275 |
break;
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276 |
|
277 |
case -EPIPE:
|
278 |
set_halt(s, p->devep); |
279 |
/* fall through */
|
280 |
default:
|
281 |
p->len = USB_RET_NAK; |
282 |
break;
|
283 |
} |
284 |
|
285 |
usb_packet_complete(p); |
286 |
} |
287 |
|
288 |
async_free(aurb); |
289 |
} |
290 |
} |
291 |
|
292 |
static void async_cancel(USBPacket *unused, void *opaque) |
293 |
{ |
294 |
AsyncURB *aurb = opaque; |
295 |
USBHostDevice *s = aurb->hdev; |
296 |
|
297 |
dprintf("husb: async cancel. aurb %p\n", aurb);
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298 |
|
299 |
/* Mark it as dead (see async_complete above) */
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aurb->packet = NULL;
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301 |
|
302 |
int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
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303 |
if (r < 0) { |
304 |
dprintf("husb: async. discard urb failed errno %d\n", errno);
|
305 |
} |
306 |
} |
307 |
|
308 |
static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) |
309 |
{ |
310 |
int dev_descr_len, config_descr_len;
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311 |
int interface, nb_interfaces, nb_configurations;
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312 |
int ret, i;
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313 |
|
314 |
if (configuration == 0) /* address state - ignore */ |
315 |
return 1; |
316 |
|
317 |
dprintf("husb: claiming interfaces. config %d\n", configuration);
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318 |
|
319 |
i = 0;
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320 |
dev_descr_len = dev->descr[0];
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321 |
if (dev_descr_len > dev->descr_len)
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322 |
goto fail;
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323 |
nb_configurations = dev->descr[17];
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324 |
|
325 |
i += dev_descr_len; |
326 |
while (i < dev->descr_len) {
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327 |
dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
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328 |
dev->descr[i], dev->descr[i+1]);
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329 |
|
330 |
if (dev->descr[i+1] != USB_DT_CONFIG) { |
331 |
i += dev->descr[i]; |
332 |
continue;
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333 |
} |
334 |
config_descr_len = dev->descr[i]; |
335 |
|
336 |
printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); |
337 |
|
338 |
if (configuration < 0 || configuration == dev->descr[i + 5]) { |
339 |
configuration = dev->descr[i + 5];
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340 |
break;
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341 |
} |
342 |
|
343 |
i += config_descr_len; |
344 |
} |
345 |
|
346 |
if (i >= dev->descr_len) {
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347 |
fprintf(stderr, "husb: update iface failed. no matching configuration\n");
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348 |
goto fail;
|
349 |
} |
350 |
nb_interfaces = dev->descr[i + 4];
|
351 |
|
352 |
#ifdef USBDEVFS_DISCONNECT
|
353 |
/* earlier Linux 2.4 do not support that */
|
354 |
{ |
355 |
struct usbdevfs_ioctl ctrl;
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356 |
for (interface = 0; interface < nb_interfaces; interface++) { |
357 |
ctrl.ioctl_code = USBDEVFS_DISCONNECT; |
358 |
ctrl.ifno = interface; |
359 |
ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); |
360 |
if (ret < 0 && errno != ENODATA) { |
361 |
perror("USBDEVFS_DISCONNECT");
|
362 |
goto fail;
|
363 |
} |
364 |
} |
365 |
} |
366 |
#endif
|
367 |
|
368 |
/* XXX: only grab if all interfaces are free */
|
369 |
for (interface = 0; interface < nb_interfaces; interface++) { |
370 |
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); |
371 |
if (ret < 0) { |
372 |
if (errno == EBUSY) {
|
373 |
printf("husb: update iface. device already grabbed\n");
|
374 |
} else {
|
375 |
perror("husb: failed to claim interface");
|
376 |
} |
377 |
fail:
|
378 |
return 0; |
379 |
} |
380 |
} |
381 |
|
382 |
printf("husb: %d interfaces claimed for configuration %d\n",
|
383 |
nb_interfaces, configuration); |
384 |
|
385 |
dev->ninterfaces = nb_interfaces; |
386 |
dev->configuration = configuration; |
387 |
return 1; |
388 |
} |
389 |
|
390 |
static int usb_host_release_interfaces(USBHostDevice *s) |
391 |
{ |
392 |
int ret, i;
|
393 |
|
394 |
dprintf("husb: releasing interfaces\n");
|
395 |
|
396 |
for (i = 0; i < s->ninterfaces; i++) { |
397 |
ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); |
398 |
if (ret < 0) { |
399 |
perror("husb: failed to release interface");
|
400 |
return 0; |
401 |
} |
402 |
} |
403 |
|
404 |
return 1; |
405 |
} |
406 |
|
407 |
static void usb_host_handle_reset(USBDevice *dev) |
408 |
{ |
409 |
USBHostDevice *s = (USBHostDevice *) dev; |
410 |
|
411 |
dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);
|
412 |
|
413 |
ioctl(s->fd, USBDEVFS_RESET); |
414 |
|
415 |
usb_host_claim_interfaces(s, s->configuration); |
416 |
} |
417 |
|
418 |
static void usb_host_handle_destroy(USBDevice *dev) |
419 |
{ |
420 |
USBHostDevice *s = (USBHostDevice *)dev; |
421 |
|
422 |
s->closing = 1;
|
423 |
|
424 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
425 |
|
426 |
hostdev_unlink(s); |
427 |
|
428 |
async_complete(s); |
429 |
|
430 |
if (s->fd >= 0) |
431 |
close(s->fd); |
432 |
|
433 |
qemu_free(s); |
434 |
} |
435 |
|
436 |
static int usb_linux_update_endp_table(USBHostDevice *s); |
437 |
|
438 |
static int usb_host_handle_data(USBHostDevice *s, USBPacket *p) |
439 |
{ |
440 |
struct usbdevfs_urb *urb;
|
441 |
AsyncURB *aurb; |
442 |
int ret;
|
443 |
|
444 |
aurb = async_alloc(); |
445 |
if (!aurb) {
|
446 |
dprintf("husb: async malloc failed\n");
|
447 |
return USB_RET_NAK;
|
448 |
} |
449 |
aurb->hdev = s; |
450 |
aurb->packet = p; |
451 |
|
452 |
urb = &aurb->urb; |
453 |
|
454 |
if (p->pid == USB_TOKEN_IN)
|
455 |
urb->endpoint = p->devep | 0x80;
|
456 |
else
|
457 |
urb->endpoint = p->devep; |
458 |
|
459 |
if (is_halted(s, p->devep)) {
|
460 |
ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint); |
461 |
if (ret < 0) { |
462 |
dprintf("husb: failed to clear halt. ep 0x%x errno %d\n",
|
463 |
urb->endpoint, errno); |
464 |
return USB_RET_NAK;
|
465 |
} |
466 |
clear_halt(s, p->devep); |
467 |
} |
468 |
|
469 |
urb->buffer = p->data; |
470 |
urb->buffer_length = p->len; |
471 |
|
472 |
if (is_isoc(s, p->devep)) {
|
473 |
/* Setup ISOC transfer */
|
474 |
urb->type = USBDEVFS_URB_TYPE_ISO; |
475 |
urb->flags = USBDEVFS_URB_ISO_ASAP; |
476 |
urb->number_of_packets = 1;
|
477 |
urb->iso_frame_desc[0].length = p->len;
|
478 |
} else {
|
479 |
/* Setup bulk transfer */
|
480 |
urb->type = USBDEVFS_URB_TYPE_BULK; |
481 |
} |
482 |
|
483 |
urb->usercontext = s; |
484 |
|
485 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
486 |
|
487 |
dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb);
|
488 |
|
489 |
if (ret < 0) { |
490 |
dprintf("husb: submit failed. errno %d\n", errno);
|
491 |
async_free(aurb); |
492 |
|
493 |
switch(errno) {
|
494 |
case ETIMEDOUT:
|
495 |
return USB_RET_NAK;
|
496 |
case EPIPE:
|
497 |
default:
|
498 |
return USB_RET_STALL;
|
499 |
} |
500 |
} |
501 |
|
502 |
usb_defer_packet(p, async_cancel, aurb); |
503 |
return USB_RET_ASYNC;
|
504 |
} |
505 |
|
506 |
static int ctrl_error(void) |
507 |
{ |
508 |
if (errno == ETIMEDOUT)
|
509 |
return USB_RET_NAK;
|
510 |
else
|
511 |
return USB_RET_STALL;
|
512 |
} |
513 |
|
514 |
static int usb_host_set_address(USBHostDevice *s, int addr) |
515 |
{ |
516 |
dprintf("husb: ctrl set addr %u\n", addr);
|
517 |
s->dev.addr = addr; |
518 |
return 0; |
519 |
} |
520 |
|
521 |
static int usb_host_set_config(USBHostDevice *s, int config) |
522 |
{ |
523 |
usb_host_release_interfaces(s); |
524 |
|
525 |
int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
|
526 |
|
527 |
dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
|
528 |
|
529 |
if (ret < 0) |
530 |
return ctrl_error();
|
531 |
|
532 |
usb_host_claim_interfaces(s, config); |
533 |
return 0; |
534 |
} |
535 |
|
536 |
static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) |
537 |
{ |
538 |
struct usbdevfs_setinterface si;
|
539 |
int ret;
|
540 |
|
541 |
si.interface = iface; |
542 |
si.altsetting = alt; |
543 |
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); |
544 |
|
545 |
dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n",
|
546 |
iface, alt, ret, errno); |
547 |
|
548 |
if (ret < 0) |
549 |
return ctrl_error();
|
550 |
|
551 |
usb_linux_update_endp_table(s); |
552 |
return 0; |
553 |
} |
554 |
|
555 |
static int usb_host_handle_control(USBHostDevice *s, USBPacket *p) |
556 |
{ |
557 |
struct usbdevfs_urb *urb;
|
558 |
AsyncURB *aurb; |
559 |
int ret, value, index;
|
560 |
|
561 |
/*
|
562 |
* Process certain standard device requests.
|
563 |
* These are infrequent and are processed synchronously.
|
564 |
*/
|
565 |
value = le16_to_cpu(s->ctrl.req.wValue); |
566 |
index = le16_to_cpu(s->ctrl.req.wIndex); |
567 |
|
568 |
dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
|
569 |
s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, |
570 |
s->ctrl.len); |
571 |
|
572 |
if (s->ctrl.req.bRequestType == 0) { |
573 |
switch (s->ctrl.req.bRequest) {
|
574 |
case USB_REQ_SET_ADDRESS:
|
575 |
return usb_host_set_address(s, value);
|
576 |
|
577 |
case USB_REQ_SET_CONFIGURATION:
|
578 |
return usb_host_set_config(s, value & 0xff); |
579 |
} |
580 |
} |
581 |
|
582 |
if (s->ctrl.req.bRequestType == 1 && |
583 |
s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) |
584 |
return usb_host_set_interface(s, index, value);
|
585 |
|
586 |
/* The rest are asynchronous */
|
587 |
|
588 |
aurb = async_alloc(); |
589 |
if (!aurb) {
|
590 |
dprintf("husb: async malloc failed\n");
|
591 |
return USB_RET_NAK;
|
592 |
} |
593 |
aurb->hdev = s; |
594 |
aurb->packet = p; |
595 |
|
596 |
/*
|
597 |
* Setup ctrl transfer.
|
598 |
*
|
599 |
* s->ctrl is layed out such that data buffer immediately follows
|
600 |
* 'req' struct which is exactly what usbdevfs expects.
|
601 |
*/
|
602 |
urb = &aurb->urb; |
603 |
|
604 |
urb->type = USBDEVFS_URB_TYPE_CONTROL; |
605 |
urb->endpoint = p->devep; |
606 |
|
607 |
urb->buffer = &s->ctrl.req; |
608 |
urb->buffer_length = 8 + s->ctrl.len;
|
609 |
|
610 |
urb->usercontext = s; |
611 |
|
612 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
613 |
|
614 |
dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
|
615 |
|
616 |
if (ret < 0) { |
617 |
dprintf("husb: submit failed. errno %d\n", errno);
|
618 |
async_free(aurb); |
619 |
|
620 |
switch(errno) {
|
621 |
case ETIMEDOUT:
|
622 |
return USB_RET_NAK;
|
623 |
case EPIPE:
|
624 |
default:
|
625 |
return USB_RET_STALL;
|
626 |
} |
627 |
} |
628 |
|
629 |
usb_defer_packet(p, async_cancel, aurb); |
630 |
return USB_RET_ASYNC;
|
631 |
} |
632 |
|
633 |
static int do_token_setup(USBDevice *dev, USBPacket *p) |
634 |
{ |
635 |
USBHostDevice *s = (USBHostDevice *) dev; |
636 |
int ret = 0; |
637 |
|
638 |
if (p->len != 8) |
639 |
return USB_RET_STALL;
|
640 |
|
641 |
memcpy(&s->ctrl.req, p->data, 8);
|
642 |
s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength); |
643 |
s->ctrl.offset = 0;
|
644 |
s->ctrl.state = CTRL_STATE_SETUP; |
645 |
|
646 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
647 |
ret = usb_host_handle_control(s, p); |
648 |
if (ret < 0) |
649 |
return ret;
|
650 |
|
651 |
if (ret < s->ctrl.len)
|
652 |
s->ctrl.len = ret; |
653 |
s->ctrl.state = CTRL_STATE_DATA; |
654 |
} else {
|
655 |
if (s->ctrl.len == 0) |
656 |
s->ctrl.state = CTRL_STATE_ACK; |
657 |
else
|
658 |
s->ctrl.state = CTRL_STATE_DATA; |
659 |
} |
660 |
|
661 |
return ret;
|
662 |
} |
663 |
|
664 |
static int do_token_in(USBDevice *dev, USBPacket *p) |
665 |
{ |
666 |
USBHostDevice *s = (USBHostDevice *) dev; |
667 |
int ret = 0; |
668 |
|
669 |
if (p->devep != 0) |
670 |
return usb_host_handle_data(s, p);
|
671 |
|
672 |
switch(s->ctrl.state) {
|
673 |
case CTRL_STATE_ACK:
|
674 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
675 |
ret = usb_host_handle_control(s, p); |
676 |
if (ret == USB_RET_ASYNC)
|
677 |
return USB_RET_ASYNC;
|
678 |
|
679 |
s->ctrl.state = CTRL_STATE_IDLE; |
680 |
return ret > 0 ? 0 : ret; |
681 |
} |
682 |
|
683 |
return 0; |
684 |
|
685 |
case CTRL_STATE_DATA:
|
686 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
687 |
int len = s->ctrl.len - s->ctrl.offset;
|
688 |
if (len > p->len)
|
689 |
len = p->len; |
690 |
memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len); |
691 |
s->ctrl.offset += len; |
692 |
if (s->ctrl.offset >= s->ctrl.len)
|
693 |
s->ctrl.state = CTRL_STATE_ACK; |
694 |
return len;
|
695 |
} |
696 |
|
697 |
s->ctrl.state = CTRL_STATE_IDLE; |
698 |
return USB_RET_STALL;
|
699 |
|
700 |
default:
|
701 |
return USB_RET_STALL;
|
702 |
} |
703 |
} |
704 |
|
705 |
static int do_token_out(USBDevice *dev, USBPacket *p) |
706 |
{ |
707 |
USBHostDevice *s = (USBHostDevice *) dev; |
708 |
|
709 |
if (p->devep != 0) |
710 |
return usb_host_handle_data(s, p);
|
711 |
|
712 |
switch(s->ctrl.state) {
|
713 |
case CTRL_STATE_ACK:
|
714 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
715 |
s->ctrl.state = CTRL_STATE_IDLE; |
716 |
/* transfer OK */
|
717 |
} else {
|
718 |
/* ignore additional output */
|
719 |
} |
720 |
return 0; |
721 |
|
722 |
case CTRL_STATE_DATA:
|
723 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
724 |
int len = s->ctrl.len - s->ctrl.offset;
|
725 |
if (len > p->len)
|
726 |
len = p->len; |
727 |
memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len); |
728 |
s->ctrl.offset += len; |
729 |
if (s->ctrl.offset >= s->ctrl.len)
|
730 |
s->ctrl.state = CTRL_STATE_ACK; |
731 |
return len;
|
732 |
} |
733 |
|
734 |
s->ctrl.state = CTRL_STATE_IDLE; |
735 |
return USB_RET_STALL;
|
736 |
|
737 |
default:
|
738 |
return USB_RET_STALL;
|
739 |
} |
740 |
} |
741 |
|
742 |
/*
|
743 |
* Packet handler.
|
744 |
* Called by the HC (host controller).
|
745 |
*
|
746 |
* Returns length of the transaction or one of the USB_RET_XXX codes.
|
747 |
*/
|
748 |
static int usb_host_handle_packet(USBDevice *s, USBPacket *p) |
749 |
{ |
750 |
switch(p->pid) {
|
751 |
case USB_MSG_ATTACH:
|
752 |
s->state = USB_STATE_ATTACHED; |
753 |
return 0; |
754 |
|
755 |
case USB_MSG_DETACH:
|
756 |
s->state = USB_STATE_NOTATTACHED; |
757 |
return 0; |
758 |
|
759 |
case USB_MSG_RESET:
|
760 |
s->remote_wakeup = 0;
|
761 |
s->addr = 0;
|
762 |
s->state = USB_STATE_DEFAULT; |
763 |
s->handle_reset(s); |
764 |
return 0; |
765 |
} |
766 |
|
767 |
/* Rest of the PIDs must match our address */
|
768 |
if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
|
769 |
return USB_RET_NODEV;
|
770 |
|
771 |
switch (p->pid) {
|
772 |
case USB_TOKEN_SETUP:
|
773 |
return do_token_setup(s, p);
|
774 |
|
775 |
case USB_TOKEN_IN:
|
776 |
return do_token_in(s, p);
|
777 |
|
778 |
case USB_TOKEN_OUT:
|
779 |
return do_token_out(s, p);
|
780 |
|
781 |
default:
|
782 |
return USB_RET_STALL;
|
783 |
} |
784 |
} |
785 |
|
786 |
/* returns 1 on problem encountered or 0 for success */
|
787 |
static int usb_linux_update_endp_table(USBHostDevice *s) |
788 |
{ |
789 |
uint8_t *descriptors; |
790 |
uint8_t devep, type, configuration, alt_interface; |
791 |
struct usb_ctrltransfer ct;
|
792 |
int interface, ret, length, i;
|
793 |
|
794 |
ct.bRequestType = USB_DIR_IN; |
795 |
ct.bRequest = USB_REQ_GET_CONFIGURATION; |
796 |
ct.wValue = 0;
|
797 |
ct.wIndex = 0;
|
798 |
ct.wLength = 1;
|
799 |
ct.data = &configuration; |
800 |
ct.timeout = 50;
|
801 |
|
802 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
803 |
if (ret < 0) { |
804 |
perror("usb_linux_update_endp_table");
|
805 |
return 1; |
806 |
} |
807 |
|
808 |
/* in address state */
|
809 |
if (configuration == 0) |
810 |
return 1; |
811 |
|
812 |
/* get the desired configuration, interface, and endpoint descriptors
|
813 |
* from device description */
|
814 |
descriptors = &s->descr[18];
|
815 |
length = s->descr_len - 18;
|
816 |
i = 0;
|
817 |
|
818 |
if (descriptors[i + 1] != USB_DT_CONFIG || |
819 |
descriptors[i + 5] != configuration) {
|
820 |
dprintf("invalid descriptor data - configuration\n");
|
821 |
return 1; |
822 |
} |
823 |
i += descriptors[i]; |
824 |
|
825 |
while (i < length) {
|
826 |
if (descriptors[i + 1] != USB_DT_INTERFACE || |
827 |
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
828 |
descriptors[i + 4] == 0)) { |
829 |
i += descriptors[i]; |
830 |
continue;
|
831 |
} |
832 |
|
833 |
interface = descriptors[i + 2];
|
834 |
|
835 |
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
836 |
ct.bRequest = USB_REQ_GET_INTERFACE; |
837 |
ct.wValue = 0;
|
838 |
ct.wIndex = interface; |
839 |
ct.wLength = 1;
|
840 |
ct.data = &alt_interface; |
841 |
ct.timeout = 50;
|
842 |
|
843 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
844 |
if (ret < 0) { |
845 |
perror("usb_linux_update_endp_table");
|
846 |
return 1; |
847 |
} |
848 |
|
849 |
/* the current interface descriptor is the active interface
|
850 |
* and has endpoints */
|
851 |
if (descriptors[i + 3] != alt_interface) { |
852 |
i += descriptors[i]; |
853 |
continue;
|
854 |
} |
855 |
|
856 |
/* advance to the endpoints */
|
857 |
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) |
858 |
i += descriptors[i]; |
859 |
|
860 |
if (i >= length)
|
861 |
break;
|
862 |
|
863 |
while (i < length) {
|
864 |
if (descriptors[i + 1] != USB_DT_ENDPOINT) |
865 |
break;
|
866 |
|
867 |
devep = descriptors[i + 2];
|
868 |
switch (descriptors[i + 3] & 0x3) { |
869 |
case 0x00: |
870 |
type = USBDEVFS_URB_TYPE_CONTROL; |
871 |
break;
|
872 |
case 0x01: |
873 |
type = USBDEVFS_URB_TYPE_ISO; |
874 |
break;
|
875 |
case 0x02: |
876 |
type = USBDEVFS_URB_TYPE_BULK; |
877 |
break;
|
878 |
case 0x03: |
879 |
type = USBDEVFS_URB_TYPE_INTERRUPT; |
880 |
break;
|
881 |
default:
|
882 |
dprintf("usb_host: malformed endpoint type\n");
|
883 |
type = USBDEVFS_URB_TYPE_BULK; |
884 |
} |
885 |
s->endp_table[(devep & 0xf) - 1].type = type; |
886 |
s->endp_table[(devep & 0xf) - 1].halted = 0; |
887 |
|
888 |
i += descriptors[i]; |
889 |
} |
890 |
} |
891 |
return 0; |
892 |
} |
893 |
|
894 |
static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name) |
895 |
{ |
896 |
int fd = -1, ret; |
897 |
USBHostDevice *dev = NULL;
|
898 |
struct usbdevfs_connectinfo ci;
|
899 |
char buf[1024]; |
900 |
|
901 |
dev = qemu_mallocz(sizeof(USBHostDevice));
|
902 |
if (!dev)
|
903 |
goto fail;
|
904 |
|
905 |
dev->bus_num = bus_num; |
906 |
dev->addr = addr; |
907 |
|
908 |
printf("husb: open device %d.%d\n", bus_num, addr);
|
909 |
|
910 |
if (!usb_host_device_path) {
|
911 |
perror("husb: USB Host Device Path not set");
|
912 |
goto fail;
|
913 |
} |
914 |
snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, |
915 |
bus_num, addr); |
916 |
fd = open(buf, O_RDWR | O_NONBLOCK); |
917 |
if (fd < 0) { |
918 |
perror(buf); |
919 |
goto fail;
|
920 |
} |
921 |
dprintf("husb: opened %s\n", buf);
|
922 |
|
923 |
/* read the device description */
|
924 |
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
925 |
if (dev->descr_len <= 0) { |
926 |
perror("husb: reading device data failed");
|
927 |
goto fail;
|
928 |
} |
929 |
|
930 |
#ifdef DEBUG
|
931 |
{ |
932 |
int x;
|
933 |
printf("=== begin dumping device descriptor data ===\n");
|
934 |
for (x = 0; x < dev->descr_len; x++) |
935 |
printf("%02x ", dev->descr[x]);
|
936 |
printf("\n=== end dumping device descriptor data ===\n");
|
937 |
} |
938 |
#endif
|
939 |
|
940 |
dev->fd = fd; |
941 |
|
942 |
/*
|
943 |
* Initial configuration is -1 which makes us claim first
|
944 |
* available config. We used to start with 1, which does not
|
945 |
* always work. I've seen devices where first config starts
|
946 |
* with 2.
|
947 |
*/
|
948 |
if (!usb_host_claim_interfaces(dev, -1)) |
949 |
goto fail;
|
950 |
|
951 |
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
952 |
if (ret < 0) { |
953 |
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
954 |
goto fail;
|
955 |
} |
956 |
|
957 |
printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
|
958 |
|
959 |
ret = usb_linux_update_endp_table(dev); |
960 |
if (ret)
|
961 |
goto fail;
|
962 |
|
963 |
if (ci.slow)
|
964 |
dev->dev.speed = USB_SPEED_LOW; |
965 |
else
|
966 |
dev->dev.speed = USB_SPEED_HIGH; |
967 |
|
968 |
dev->dev.handle_packet = usb_host_handle_packet; |
969 |
dev->dev.handle_reset = usb_host_handle_reset; |
970 |
dev->dev.handle_destroy = usb_host_handle_destroy; |
971 |
|
972 |
if (!prod_name || prod_name[0] == '\0') |
973 |
snprintf(dev->dev.devname, sizeof(dev->dev.devname),
|
974 |
"host:%d.%d", bus_num, addr);
|
975 |
else
|
976 |
pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
|
977 |
prod_name); |
978 |
|
979 |
/* USB devio uses 'write' flag to check for async completions */
|
980 |
qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
|
981 |
|
982 |
hostdev_link(dev); |
983 |
|
984 |
return (USBDevice *) dev;
|
985 |
|
986 |
fail:
|
987 |
if (dev)
|
988 |
qemu_free(dev); |
989 |
|
990 |
close(fd); |
991 |
return NULL; |
992 |
} |
993 |
|
994 |
static int usb_host_auto_add(const char *spec); |
995 |
static int usb_host_auto_del(const char *spec); |
996 |
|
997 |
USBDevice *usb_host_device_open(const char *devname) |
998 |
{ |
999 |
int bus_num, addr;
|
1000 |
char product_name[PRODUCT_NAME_SZ];
|
1001 |
|
1002 |
if (strstr(devname, "auto:")) { |
1003 |
usb_host_auto_add(devname); |
1004 |
return NULL; |
1005 |
} |
1006 |
|
1007 |
if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), |
1008 |
devname) < 0)
|
1009 |
return NULL; |
1010 |
|
1011 |
if (hostdev_find(bus_num, addr)) {
|
1012 |
term_printf("husb: host usb device %d.%d is already open\n", bus_num, addr);
|
1013 |
return NULL; |
1014 |
} |
1015 |
|
1016 |
return usb_host_device_open_addr(bus_num, addr, product_name);
|
1017 |
} |
1018 |
|
1019 |
int usb_host_device_close(const char *devname) |
1020 |
{ |
1021 |
char product_name[PRODUCT_NAME_SZ];
|
1022 |
int bus_num, addr;
|
1023 |
USBHostDevice *s; |
1024 |
|
1025 |
if (strstr(devname, "auto:")) |
1026 |
return usb_host_auto_del(devname);
|
1027 |
|
1028 |
if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), |
1029 |
devname) < 0)
|
1030 |
return -1; |
1031 |
|
1032 |
s = hostdev_find(bus_num, addr); |
1033 |
if (s) {
|
1034 |
usb_device_del_addr(0, s->dev.addr);
|
1035 |
return 0; |
1036 |
} |
1037 |
|
1038 |
return -1; |
1039 |
} |
1040 |
|
1041 |
static int get_tag_value(char *buf, int buf_size, |
1042 |
const char *str, const char *tag, |
1043 |
const char *stopchars) |
1044 |
{ |
1045 |
const char *p; |
1046 |
char *q;
|
1047 |
p = strstr(str, tag); |
1048 |
if (!p)
|
1049 |
return -1; |
1050 |
p += strlen(tag); |
1051 |
while (isspace(*p))
|
1052 |
p++; |
1053 |
q = buf; |
1054 |
while (*p != '\0' && !strchr(stopchars, *p)) { |
1055 |
if ((q - buf) < (buf_size - 1)) |
1056 |
*q++ = *p; |
1057 |
p++; |
1058 |
} |
1059 |
*q = '\0';
|
1060 |
return q - buf;
|
1061 |
} |
1062 |
|
1063 |
/*
|
1064 |
* Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
|
1065 |
* host's USB devices. This is legacy support since many distributions
|
1066 |
* are moving to /sys/bus/usb
|
1067 |
*/
|
1068 |
static int usb_host_scan_dev(void *opaque, USBScanFunc *func) |
1069 |
{ |
1070 |
FILE *f = 0;
|
1071 |
char line[1024]; |
1072 |
char buf[1024]; |
1073 |
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
|
1074 |
char product_name[512]; |
1075 |
int ret = 0; |
1076 |
|
1077 |
if (!usb_host_device_path) {
|
1078 |
perror("husb: USB Host Device Path not set");
|
1079 |
goto the_end;
|
1080 |
} |
1081 |
snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); |
1082 |
f = fopen(line, "r");
|
1083 |
if (!f) {
|
1084 |
perror("husb: cannot open devices file");
|
1085 |
goto the_end;
|
1086 |
} |
1087 |
|
1088 |
device_count = 0;
|
1089 |
bus_num = addr = speed = class_id = product_id = vendor_id = 0;
|
1090 |
for(;;) {
|
1091 |
if (fgets(line, sizeof(line), f) == NULL) |
1092 |
break;
|
1093 |
if (strlen(line) > 0) |
1094 |
line[strlen(line) - 1] = '\0'; |
1095 |
if (line[0] == 'T' && line[1] == ':') { |
1096 |
if (device_count && (vendor_id || product_id)) {
|
1097 |
/* New device. Add the previously discovered device. */
|
1098 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1099 |
product_id, product_name, speed); |
1100 |
if (ret)
|
1101 |
goto the_end;
|
1102 |
} |
1103 |
if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) |
1104 |
goto fail;
|
1105 |
bus_num = atoi(buf); |
1106 |
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) |
1107 |
goto fail;
|
1108 |
addr = atoi(buf); |
1109 |
if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) |
1110 |
goto fail;
|
1111 |
if (!strcmp(buf, "480")) |
1112 |
speed = USB_SPEED_HIGH; |
1113 |
else if (!strcmp(buf, "1.5")) |
1114 |
speed = USB_SPEED_LOW; |
1115 |
else
|
1116 |
speed = USB_SPEED_FULL; |
1117 |
product_name[0] = '\0'; |
1118 |
class_id = 0xff;
|
1119 |
device_count++; |
1120 |
product_id = 0;
|
1121 |
vendor_id = 0;
|
1122 |
} else if (line[0] == 'P' && line[1] == ':') { |
1123 |
if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) |
1124 |
goto fail;
|
1125 |
vendor_id = strtoul(buf, NULL, 16); |
1126 |
if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) |
1127 |
goto fail;
|
1128 |
product_id = strtoul(buf, NULL, 16); |
1129 |
} else if (line[0] == 'S' && line[1] == ':') { |
1130 |
if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) |
1131 |
goto fail;
|
1132 |
pstrcpy(product_name, sizeof(product_name), buf);
|
1133 |
} else if (line[0] == 'D' && line[1] == ':') { |
1134 |
if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) |
1135 |
goto fail;
|
1136 |
class_id = strtoul(buf, NULL, 16); |
1137 |
} |
1138 |
fail: ;
|
1139 |
} |
1140 |
if (device_count && (vendor_id || product_id)) {
|
1141 |
/* Add the last device. */
|
1142 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1143 |
product_id, product_name, speed); |
1144 |
} |
1145 |
the_end:
|
1146 |
if (f)
|
1147 |
fclose(f); |
1148 |
return ret;
|
1149 |
} |
1150 |
|
1151 |
/*
|
1152 |
* Read sys file-system device file
|
1153 |
*
|
1154 |
* @line address of buffer to put file contents in
|
1155 |
* @line_size size of line
|
1156 |
* @device_file path to device file (printf format string)
|
1157 |
* @device_name device being opened (inserted into device_file)
|
1158 |
*
|
1159 |
* @return 0 failed, 1 succeeded ('line' contains data)
|
1160 |
*/
|
1161 |
static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name) |
1162 |
{ |
1163 |
FILE *f; |
1164 |
int ret = 0; |
1165 |
char filename[PATH_MAX];
|
1166 |
|
1167 |
snprintf(filename, PATH_MAX, device_file, device_name); |
1168 |
f = fopen(filename, "r");
|
1169 |
if (f) {
|
1170 |
fgets(line, line_size, f); |
1171 |
fclose(f); |
1172 |
ret = 1;
|
1173 |
} else {
|
1174 |
term_printf("husb: could not open %s\n", filename);
|
1175 |
} |
1176 |
|
1177 |
return ret;
|
1178 |
} |
1179 |
|
1180 |
/*
|
1181 |
* Use /sys/bus/usb/devices/ directory to determine host's USB
|
1182 |
* devices.
|
1183 |
*
|
1184 |
* This code is based on Robert Schiele's original patches posted to
|
1185 |
* the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
|
1186 |
*/
|
1187 |
static int usb_host_scan_sys(void *opaque, USBScanFunc *func) |
1188 |
{ |
1189 |
DIR *dir = 0;
|
1190 |
char line[1024]; |
1191 |
int bus_num, addr, speed, class_id, product_id, vendor_id;
|
1192 |
int ret = 0; |
1193 |
char product_name[512]; |
1194 |
struct dirent *de;
|
1195 |
|
1196 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
1197 |
if (!dir) {
|
1198 |
perror("husb: cannot open devices directory");
|
1199 |
goto the_end;
|
1200 |
} |
1201 |
|
1202 |
while ((de = readdir(dir))) {
|
1203 |
if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { |
1204 |
char *tmpstr = de->d_name;
|
1205 |
if (!strncmp(de->d_name, "usb", 3)) |
1206 |
tmpstr += 3;
|
1207 |
bus_num = atoi(tmpstr); |
1208 |
|
1209 |
if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/devnum", de->d_name)) |
1210 |
goto the_end;
|
1211 |
if (sscanf(line, "%d", &addr) != 1) |
1212 |
goto the_end;
|
1213 |
|
1214 |
if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/bDeviceClass", de->d_name)) |
1215 |
goto the_end;
|
1216 |
if (sscanf(line, "%x", &class_id) != 1) |
1217 |
goto the_end;
|
1218 |
|
1219 |
if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/idVendor", de->d_name)) |
1220 |
goto the_end;
|
1221 |
if (sscanf(line, "%x", &vendor_id) != 1) |
1222 |
goto the_end;
|
1223 |
|
1224 |
if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/idProduct", de->d_name)) |
1225 |
goto the_end;
|
1226 |
if (sscanf(line, "%x", &product_id) != 1) |
1227 |
goto the_end;
|
1228 |
|
1229 |
if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/product", de->d_name)) { |
1230 |
*product_name = 0;
|
1231 |
} else {
|
1232 |
if (strlen(line) > 0) |
1233 |
line[strlen(line) - 1] = '\0'; |
1234 |
pstrcpy(product_name, sizeof(product_name), line);
|
1235 |
} |
1236 |
|
1237 |
if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/speed", de->d_name)) |
1238 |
goto the_end;
|
1239 |
if (!strcmp(line, "480\n")) |
1240 |
speed = USB_SPEED_HIGH; |
1241 |
else if (!strcmp(line, "1.5\n")) |
1242 |
speed = USB_SPEED_LOW; |
1243 |
else
|
1244 |
speed = USB_SPEED_FULL; |
1245 |
|
1246 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1247 |
product_id, product_name, speed); |
1248 |
if (ret)
|
1249 |
goto the_end;
|
1250 |
} |
1251 |
} |
1252 |
the_end:
|
1253 |
if (dir)
|
1254 |
closedir(dir); |
1255 |
return ret;
|
1256 |
} |
1257 |
|
1258 |
/*
|
1259 |
* Determine how to access the host's USB devices and call the
|
1260 |
* specific support function.
|
1261 |
*/
|
1262 |
static int usb_host_scan(void *opaque, USBScanFunc *func) |
1263 |
{ |
1264 |
FILE *f = 0;
|
1265 |
DIR *dir = 0;
|
1266 |
int ret = 0; |
1267 |
const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; |
1268 |
char devpath[PATH_MAX];
|
1269 |
|
1270 |
/* only check the host once */
|
1271 |
if (!usb_fs_type) {
|
1272 |
f = fopen(USBPROCBUS_PATH "/devices", "r"); |
1273 |
if (f) {
|
1274 |
/* devices found in /proc/bus/usb/ */
|
1275 |
strcpy(devpath, USBPROCBUS_PATH); |
1276 |
usb_fs_type = USB_FS_PROC; |
1277 |
fclose(f); |
1278 |
dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH); |
1279 |
goto found_devices;
|
1280 |
} |
1281 |
/* try additional methods if an access method hasn't been found yet */
|
1282 |
f = fopen(USBDEVBUS_PATH "/devices", "r"); |
1283 |
if (f) {
|
1284 |
/* devices found in /dev/bus/usb/ */
|
1285 |
strcpy(devpath, USBDEVBUS_PATH); |
1286 |
usb_fs_type = USB_FS_DEV; |
1287 |
fclose(f); |
1288 |
dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH); |
1289 |
goto found_devices;
|
1290 |
} |
1291 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
1292 |
if (dir) {
|
1293 |
/* devices found in /dev/bus/usb/ (yes - not a mistake!) */
|
1294 |
strcpy(devpath, USBDEVBUS_PATH); |
1295 |
usb_fs_type = USB_FS_SYS; |
1296 |
closedir(dir); |
1297 |
dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH); |
1298 |
goto found_devices;
|
1299 |
} |
1300 |
found_devices:
|
1301 |
if (!usb_fs_type) {
|
1302 |
term_printf("husb: unable to access USB devices\n");
|
1303 |
return -ENOENT;
|
1304 |
} |
1305 |
|
1306 |
/* the module setting (used later for opening devices) */
|
1307 |
usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
|
1308 |
if (usb_host_device_path) {
|
1309 |
strcpy(usb_host_device_path, devpath); |
1310 |
term_printf("husb: using %s file-system with %s\n", fs_type[usb_fs_type], usb_host_device_path);
|
1311 |
} else {
|
1312 |
/* out of memory? */
|
1313 |
perror("husb: unable to allocate memory for device path");
|
1314 |
return -ENOMEM;
|
1315 |
} |
1316 |
} |
1317 |
|
1318 |
switch (usb_fs_type) {
|
1319 |
case USB_FS_PROC:
|
1320 |
case USB_FS_DEV:
|
1321 |
ret = usb_host_scan_dev(opaque, func); |
1322 |
break;
|
1323 |
case USB_FS_SYS:
|
1324 |
ret = usb_host_scan_sys(opaque, func); |
1325 |
break;
|
1326 |
default:
|
1327 |
ret = -EINVAL; |
1328 |
break;
|
1329 |
} |
1330 |
return ret;
|
1331 |
} |
1332 |
|
1333 |
struct USBAutoFilter {
|
1334 |
struct USBAutoFilter *next;
|
1335 |
int bus_num;
|
1336 |
int addr;
|
1337 |
int vendor_id;
|
1338 |
int product_id;
|
1339 |
}; |
1340 |
|
1341 |
static QEMUTimer *usb_auto_timer;
|
1342 |
static struct USBAutoFilter *usb_auto_filter; |
1343 |
|
1344 |
static int usb_host_auto_scan(void *opaque, int bus_num, int addr, |
1345 |
int class_id, int vendor_id, int product_id, |
1346 |
const char *product_name, int speed) |
1347 |
{ |
1348 |
struct USBAutoFilter *f;
|
1349 |
struct USBDevice *dev;
|
1350 |
|
1351 |
/* Ignore hubs */
|
1352 |
if (class_id == 9) |
1353 |
return 0; |
1354 |
|
1355 |
for (f = usb_auto_filter; f; f = f->next) {
|
1356 |
if (f->bus_num >= 0 && f->bus_num != bus_num) |
1357 |
continue;
|
1358 |
|
1359 |
if (f->addr >= 0 && f->addr != addr) |
1360 |
continue;
|
1361 |
|
1362 |
if (f->vendor_id >= 0 && f->vendor_id != vendor_id) |
1363 |
continue;
|
1364 |
|
1365 |
if (f->product_id >= 0 && f->product_id != product_id) |
1366 |
continue;
|
1367 |
|
1368 |
/* We got a match */
|
1369 |
|
1370 |
/* Allredy attached ? */
|
1371 |
if (hostdev_find(bus_num, addr))
|
1372 |
return 0; |
1373 |
|
1374 |
dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
|
1375 |
|
1376 |
dev = usb_host_device_open_addr(bus_num, addr, product_name); |
1377 |
if (dev)
|
1378 |
usb_device_add_dev(dev); |
1379 |
} |
1380 |
|
1381 |
return 0; |
1382 |
} |
1383 |
|
1384 |
static void usb_host_auto_timer(void *unused) |
1385 |
{ |
1386 |
usb_host_scan(NULL, usb_host_auto_scan);
|
1387 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
1388 |
} |
1389 |
|
1390 |
/*
|
1391 |
* Autoconnect filter
|
1392 |
* Format:
|
1393 |
* auto:bus:dev[:vid:pid]
|
1394 |
* auto:bus.dev[:vid:pid]
|
1395 |
*
|
1396 |
* bus - bus number (dec, * means any)
|
1397 |
* dev - device number (dec, * means any)
|
1398 |
* vid - vendor id (hex, * means any)
|
1399 |
* pid - product id (hex, * means any)
|
1400 |
*
|
1401 |
* See 'lsusb' output.
|
1402 |
*/
|
1403 |
static int parse_filter(const char *spec, struct USBAutoFilter *f) |
1404 |
{ |
1405 |
enum { BUS, DEV, VID, PID, DONE };
|
1406 |
const char *p = spec; |
1407 |
int i;
|
1408 |
|
1409 |
f->bus_num = -1;
|
1410 |
f->addr = -1;
|
1411 |
f->vendor_id = -1;
|
1412 |
f->product_id = -1;
|
1413 |
|
1414 |
for (i = BUS; i < DONE; i++) {
|
1415 |
p = strpbrk(p, ":.");
|
1416 |
if (!p) break; |
1417 |
p++; |
1418 |
|
1419 |
if (*p == '*') |
1420 |
continue;
|
1421 |
|
1422 |
switch(i) {
|
1423 |
case BUS: f->bus_num = strtol(p, NULL, 10); break; |
1424 |
case DEV: f->addr = strtol(p, NULL, 10); break; |
1425 |
case VID: f->vendor_id = strtol(p, NULL, 16); break; |
1426 |
case PID: f->product_id = strtol(p, NULL, 16); break; |
1427 |
} |
1428 |
} |
1429 |
|
1430 |
if (i < DEV) {
|
1431 |
fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
|
1432 |
return -1; |
1433 |
} |
1434 |
|
1435 |
return 0; |
1436 |
} |
1437 |
|
1438 |
static int match_filter(const struct USBAutoFilter *f1, |
1439 |
const struct USBAutoFilter *f2) |
1440 |
{ |
1441 |
return f1->bus_num == f2->bus_num &&
|
1442 |
f1->addr == f2->addr && |
1443 |
f1->vendor_id == f2->vendor_id && |
1444 |
f1->product_id == f2->product_id; |
1445 |
} |
1446 |
|
1447 |
static int usb_host_auto_add(const char *spec) |
1448 |
{ |
1449 |
struct USBAutoFilter filter, *f;
|
1450 |
|
1451 |
if (parse_filter(spec, &filter) < 0) |
1452 |
return -1; |
1453 |
|
1454 |
f = qemu_mallocz(sizeof(*f));
|
1455 |
if (!f) {
|
1456 |
fprintf(stderr, "husb: failed to allocate auto filter\n");
|
1457 |
return -1; |
1458 |
} |
1459 |
|
1460 |
*f = filter; |
1461 |
|
1462 |
if (!usb_auto_filter) {
|
1463 |
/*
|
1464 |
* First entry. Init and start the monitor.
|
1465 |
* Right now we're using timer to check for new devices.
|
1466 |
* If this turns out to be too expensive we can move that into a
|
1467 |
* separate thread.
|
1468 |
*/
|
1469 |
usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL);
|
1470 |
if (!usb_auto_timer) {
|
1471 |
fprintf(stderr, "husb: failed to allocate auto scan timer\n");
|
1472 |
qemu_free(f); |
1473 |
return -1; |
1474 |
} |
1475 |
|
1476 |
/* Check for new devices every two seconds */
|
1477 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
1478 |
} |
1479 |
|
1480 |
dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n",
|
1481 |
f->bus_num, f->addr, f->vendor_id, f->product_id); |
1482 |
|
1483 |
f->next = usb_auto_filter; |
1484 |
usb_auto_filter = f; |
1485 |
|
1486 |
return 0; |
1487 |
} |
1488 |
|
1489 |
static int usb_host_auto_del(const char *spec) |
1490 |
{ |
1491 |
struct USBAutoFilter *pf = usb_auto_filter;
|
1492 |
struct USBAutoFilter **prev = &usb_auto_filter;
|
1493 |
struct USBAutoFilter filter;
|
1494 |
|
1495 |
if (parse_filter(spec, &filter) < 0) |
1496 |
return -1; |
1497 |
|
1498 |
while (pf) {
|
1499 |
if (match_filter(pf, &filter)) {
|
1500 |
dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n",
|
1501 |
pf->bus_num, pf->addr, pf->vendor_id, pf->product_id); |
1502 |
|
1503 |
*prev = pf->next; |
1504 |
|
1505 |
if (!usb_auto_filter) {
|
1506 |
/* No more filters. Stop scanning. */
|
1507 |
qemu_del_timer(usb_auto_timer); |
1508 |
qemu_free_timer(usb_auto_timer); |
1509 |
} |
1510 |
|
1511 |
return 0; |
1512 |
} |
1513 |
|
1514 |
prev = &pf->next; |
1515 |
pf = pf->next; |
1516 |
} |
1517 |
|
1518 |
return -1; |
1519 |
} |
1520 |
|
1521 |
typedef struct FindDeviceState { |
1522 |
int vendor_id;
|
1523 |
int product_id;
|
1524 |
int bus_num;
|
1525 |
int addr;
|
1526 |
char product_name[PRODUCT_NAME_SZ];
|
1527 |
} FindDeviceState; |
1528 |
|
1529 |
static int usb_host_find_device_scan(void *opaque, int bus_num, int addr, |
1530 |
int class_id,
|
1531 |
int vendor_id, int product_id, |
1532 |
const char *product_name, int speed) |
1533 |
{ |
1534 |
FindDeviceState *s = opaque; |
1535 |
if ((vendor_id == s->vendor_id &&
|
1536 |
product_id == s->product_id) || |
1537 |
(bus_num == s->bus_num && |
1538 |
addr == s->addr)) { |
1539 |
pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name); |
1540 |
s->bus_num = bus_num; |
1541 |
s->addr = addr; |
1542 |
return 1; |
1543 |
} else {
|
1544 |
return 0; |
1545 |
} |
1546 |
} |
1547 |
|
1548 |
/* the syntax is :
|
1549 |
'bus.addr' (decimal numbers) or
|
1550 |
'vendor_id:product_id' (hexa numbers) */
|
1551 |
static int usb_host_find_device(int *pbus_num, int *paddr, |
1552 |
char *product_name, int product_name_size, |
1553 |
const char *devname) |
1554 |
{ |
1555 |
const char *p; |
1556 |
int ret;
|
1557 |
FindDeviceState fs; |
1558 |
|
1559 |
p = strchr(devname, '.');
|
1560 |
if (p) {
|
1561 |
*pbus_num = strtoul(devname, NULL, 0); |
1562 |
*paddr = strtoul(p + 1, NULL, 0); |
1563 |
fs.bus_num = *pbus_num; |
1564 |
fs.addr = *paddr; |
1565 |
ret = usb_host_scan(&fs, usb_host_find_device_scan); |
1566 |
if (ret)
|
1567 |
pstrcpy(product_name, product_name_size, fs.product_name); |
1568 |
return 0; |
1569 |
} |
1570 |
|
1571 |
p = strchr(devname, ':');
|
1572 |
if (p) {
|
1573 |
fs.vendor_id = strtoul(devname, NULL, 16); |
1574 |
fs.product_id = strtoul(p + 1, NULL, 16); |
1575 |
ret = usb_host_scan(&fs, usb_host_find_device_scan); |
1576 |
if (ret) {
|
1577 |
*pbus_num = fs.bus_num; |
1578 |
*paddr = fs.addr; |
1579 |
pstrcpy(product_name, product_name_size, fs.product_name); |
1580 |
return 0; |
1581 |
} |
1582 |
} |
1583 |
return -1; |
1584 |
} |
1585 |
|
1586 |
/**********************/
|
1587 |
/* USB host device info */
|
1588 |
|
1589 |
struct usb_class_info {
|
1590 |
int class;
|
1591 |
const char *class_name; |
1592 |
}; |
1593 |
|
1594 |
static const struct usb_class_info usb_class_info[] = { |
1595 |
{ USB_CLASS_AUDIO, "Audio"},
|
1596 |
{ USB_CLASS_COMM, "Communication"},
|
1597 |
{ USB_CLASS_HID, "HID"},
|
1598 |
{ USB_CLASS_HUB, "Hub" },
|
1599 |
{ USB_CLASS_PHYSICAL, "Physical" },
|
1600 |
{ USB_CLASS_PRINTER, "Printer" },
|
1601 |
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
1602 |
{ USB_CLASS_CDC_DATA, "Data" },
|
1603 |
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
1604 |
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
1605 |
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
1606 |
{ USB_CLASS_CSCID, "Smart Card" },
|
1607 |
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
1608 |
{ -1, NULL } |
1609 |
}; |
1610 |
|
1611 |
static const char *usb_class_str(uint8_t class) |
1612 |
{ |
1613 |
const struct usb_class_info *p; |
1614 |
for(p = usb_class_info; p->class != -1; p++) { |
1615 |
if (p->class == class)
|
1616 |
break;
|
1617 |
} |
1618 |
return p->class_name;
|
1619 |
} |
1620 |
|
1621 |
static void usb_info_device(int bus_num, int addr, int class_id, |
1622 |
int vendor_id, int product_id, |
1623 |
const char *product_name, |
1624 |
int speed)
|
1625 |
{ |
1626 |
const char *class_str, *speed_str; |
1627 |
|
1628 |
switch(speed) {
|
1629 |
case USB_SPEED_LOW:
|
1630 |
speed_str = "1.5";
|
1631 |
break;
|
1632 |
case USB_SPEED_FULL:
|
1633 |
speed_str = "12";
|
1634 |
break;
|
1635 |
case USB_SPEED_HIGH:
|
1636 |
speed_str = "480";
|
1637 |
break;
|
1638 |
default:
|
1639 |
speed_str = "?";
|
1640 |
break;
|
1641 |
} |
1642 |
|
1643 |
term_printf(" Device %d.%d, speed %s Mb/s\n",
|
1644 |
bus_num, addr, speed_str); |
1645 |
class_str = usb_class_str(class_id); |
1646 |
if (class_str)
|
1647 |
term_printf(" %s:", class_str);
|
1648 |
else
|
1649 |
term_printf(" Class %02x:", class_id);
|
1650 |
term_printf(" USB device %04x:%04x", vendor_id, product_id);
|
1651 |
if (product_name[0] != '\0') |
1652 |
term_printf(", %s", product_name);
|
1653 |
term_printf("\n");
|
1654 |
} |
1655 |
|
1656 |
static int usb_host_info_device(void *opaque, int bus_num, int addr, |
1657 |
int class_id,
|
1658 |
int vendor_id, int product_id, |
1659 |
const char *product_name, |
1660 |
int speed)
|
1661 |
{ |
1662 |
usb_info_device(bus_num, addr, class_id, vendor_id, product_id, |
1663 |
product_name, speed); |
1664 |
return 0; |
1665 |
} |
1666 |
|
1667 |
static void dec2str(int val, char *str, size_t size) |
1668 |
{ |
1669 |
if (val == -1) |
1670 |
snprintf(str, size, "*");
|
1671 |
else
|
1672 |
snprintf(str, size, "%d", val);
|
1673 |
} |
1674 |
|
1675 |
static void hex2str(int val, char *str, size_t size) |
1676 |
{ |
1677 |
if (val == -1) |
1678 |
snprintf(str, size, "*");
|
1679 |
else
|
1680 |
snprintf(str, size, "%x", val);
|
1681 |
} |
1682 |
|
1683 |
void usb_host_info(void) |
1684 |
{ |
1685 |
struct USBAutoFilter *f;
|
1686 |
|
1687 |
usb_host_scan(NULL, usb_host_info_device);
|
1688 |
|
1689 |
if (usb_auto_filter)
|
1690 |
term_printf(" Auto filters:\n");
|
1691 |
for (f = usb_auto_filter; f; f = f->next) {
|
1692 |
char bus[10], addr[10], vid[10], pid[10]; |
1693 |
dec2str(f->bus_num, bus, sizeof(bus));
|
1694 |
dec2str(f->addr, addr, sizeof(addr));
|
1695 |
hex2str(f->vendor_id, vid, sizeof(vid));
|
1696 |
hex2str(f->product_id, pid, sizeof(pid));
|
1697 |
term_printf(" Device %s.%s ID %s:%s\n", bus, addr, vid, pid);
|
1698 |
} |
1699 |
} |
1700 |
|
1701 |
#else
|
1702 |
|
1703 |
#include "hw/usb.h" |
1704 |
|
1705 |
void usb_host_info(void) |
1706 |
{ |
1707 |
term_printf("USB host devices not supported\n");
|
1708 |
} |
1709 |
|
1710 |
/* XXX: modify configure to compile the right host driver */
|
1711 |
USBDevice *usb_host_device_open(const char *devname) |
1712 |
{ |
1713 |
return NULL; |
1714 |
} |
1715 |
|
1716 |
int usb_host_device_close(const char *devname) |
1717 |
{ |
1718 |
return 0; |
1719 |
} |
1720 |
|
1721 |
#endif
|