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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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|
33 |
#include "qemu-common.h" |
34 |
#include "qemu-timer.h" |
35 |
#include "monitor.h" |
36 |
|
37 |
#include <dirent.h> |
38 |
#include <sys/ioctl.h> |
39 |
#include <signal.h> |
40 |
|
41 |
#include <linux/usbdevice_fs.h> |
42 |
#include <linux/version.h> |
43 |
#include "hw/usb.h" |
44 |
|
45 |
/* We redefine it to avoid version problems */
|
46 |
struct usb_ctrltransfer {
|
47 |
uint8_t bRequestType; |
48 |
uint8_t bRequest; |
49 |
uint16_t wValue; |
50 |
uint16_t wIndex; |
51 |
uint16_t wLength; |
52 |
uint32_t timeout; |
53 |
void *data;
|
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}; |
55 |
|
56 |
struct usb_ctrlrequest {
|
57 |
uint8_t bRequestType; |
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uint8_t bRequest; |
59 |
uint16_t wValue; |
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uint16_t wIndex; |
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uint16_t wLength; |
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}; |
63 |
|
64 |
typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id, |
65 |
int vendor_id, int product_id, |
66 |
const char *product_name, int speed); |
67 |
static int usb_host_find_device(int *pbus_num, int *paddr, |
68 |
char *product_name, int product_name_size, |
69 |
const char *devname); |
70 |
//#define DEBUG
|
71 |
|
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#ifdef DEBUG
|
73 |
#define dprintf printf
|
74 |
#else
|
75 |
#define dprintf(...)
|
76 |
#endif
|
77 |
|
78 |
#define USBDBG_DEVOPENED "husb: opened %s/devices\n" |
79 |
|
80 |
#define USBPROCBUS_PATH "/proc/bus/usb" |
81 |
#define PRODUCT_NAME_SZ 32 |
82 |
#define MAX_ENDPOINTS 16 |
83 |
#define USBDEVBUS_PATH "/dev/bus/usb" |
84 |
#define USBSYSBUS_PATH "/sys/bus/usb" |
85 |
|
86 |
static char *usb_host_device_path; |
87 |
|
88 |
#define USB_FS_NONE 0 |
89 |
#define USB_FS_PROC 1 |
90 |
#define USB_FS_DEV 2 |
91 |
#define USB_FS_SYS 3 |
92 |
|
93 |
static int usb_fs_type; |
94 |
|
95 |
/* endpoint association data */
|
96 |
struct endp_data {
|
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uint8_t type; |
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uint8_t halted; |
99 |
}; |
100 |
|
101 |
enum {
|
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CTRL_STATE_IDLE = 0,
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CTRL_STATE_SETUP, |
104 |
CTRL_STATE_DATA, |
105 |
CTRL_STATE_ACK |
106 |
}; |
107 |
|
108 |
/*
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109 |
* Control transfer state.
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* Note that 'buffer' _must_ follow 'req' field because
|
111 |
* 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[2048];
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}; |
120 |
|
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typedef struct USBHostDevice { |
122 |
USBDevice dev; |
123 |
int fd;
|
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|
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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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130 |
|
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struct ctrl_struct ctrl;
|
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struct endp_data endp_table[MAX_ENDPOINTS];
|
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|
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/* Host side address */
|
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int bus_num;
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int addr;
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|
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struct USBHostDevice *next;
|
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} USBHostDevice; |
140 |
|
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static int is_isoc(USBHostDevice *s, int ep) |
142 |
{ |
143 |
return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; |
144 |
} |
145 |
|
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static int is_halted(USBHostDevice *s, int ep) |
147 |
{ |
148 |
return s->endp_table[ep - 1].halted; |
149 |
} |
150 |
|
151 |
static void clear_halt(USBHostDevice *s, int ep) |
152 |
{ |
153 |
s->endp_table[ep - 1].halted = 0; |
154 |
} |
155 |
|
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static void set_halt(USBHostDevice *s, int ep) |
157 |
{ |
158 |
s->endp_table[ep - 1].halted = 1; |
159 |
} |
160 |
|
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static USBHostDevice *hostdev_list;
|
162 |
|
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static void hostdev_link(USBHostDevice *dev) |
164 |
{ |
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dev->next = hostdev_list; |
166 |
hostdev_list = dev; |
167 |
} |
168 |
|
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static void hostdev_unlink(USBHostDevice *dev) |
170 |
{ |
171 |
USBHostDevice *pdev = hostdev_list; |
172 |
USBHostDevice **prev = &hostdev_list; |
173 |
|
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while (pdev) {
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175 |
if (pdev == dev) {
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*prev = dev->next; |
177 |
return;
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178 |
} |
179 |
|
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prev = &pdev->next; |
181 |
pdev = pdev->next; |
182 |
} |
183 |
} |
184 |
|
185 |
static USBHostDevice *hostdev_find(int bus_num, int addr) |
186 |
{ |
187 |
USBHostDevice *s = hostdev_list; |
188 |
while (s) {
|
189 |
if (s->bus_num == bus_num && s->addr == addr)
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190 |
return s;
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s = s->next; |
192 |
} |
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return NULL; |
194 |
} |
195 |
|
196 |
/*
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* Async URB state.
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* We always allocate one isoc descriptor even for bulk transfers
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* to simplify allocation and casts.
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*/
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typedef struct AsyncURB |
202 |
{ |
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struct usbdevfs_urb urb;
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struct usbdevfs_iso_packet_desc isocpd;
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205 |
|
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USBPacket *packet; |
207 |
USBHostDevice *hdev; |
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} AsyncURB; |
209 |
|
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static AsyncURB *async_alloc(void) |
211 |
{ |
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return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); |
213 |
} |
214 |
|
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static void async_free(AsyncURB *aurb) |
216 |
{ |
217 |
qemu_free(aurb); |
218 |
} |
219 |
|
220 |
static void async_complete_ctrl(USBHostDevice *s, USBPacket *p) |
221 |
{ |
222 |
switch(s->ctrl.state) {
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223 |
case CTRL_STATE_SETUP:
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224 |
if (p->len < s->ctrl.len)
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s->ctrl.len = p->len; |
226 |
s->ctrl.state = CTRL_STATE_DATA; |
227 |
p->len = 8;
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break;
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229 |
|
230 |
case CTRL_STATE_ACK:
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s->ctrl.state = CTRL_STATE_IDLE; |
232 |
p->len = 0;
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233 |
break;
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234 |
|
235 |
default:
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236 |
break;
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237 |
} |
238 |
} |
239 |
|
240 |
static void async_complete(void *opaque) |
241 |
{ |
242 |
USBHostDevice *s = opaque; |
243 |
AsyncURB *aurb; |
244 |
|
245 |
while (1) { |
246 |
USBPacket *p; |
247 |
|
248 |
int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
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249 |
if (r < 0) { |
250 |
if (errno == EAGAIN)
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251 |
return;
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252 |
|
253 |
if (errno == ENODEV && !s->closing) {
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printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr);
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usb_device_delete_addr(s->bus_num, s->dev.addr); |
256 |
return;
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257 |
} |
258 |
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dprintf("husb: async. reap urb failed errno %d\n", errno);
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return;
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261 |
} |
262 |
|
263 |
p = aurb->packet; |
264 |
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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); |
267 |
|
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if (p) {
|
269 |
switch (aurb->urb.status) {
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270 |
case 0: |
271 |
p->len = aurb->urb.actual_length; |
272 |
if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL)
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async_complete_ctrl(s, p); |
274 |
break;
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275 |
|
276 |
case -EPIPE:
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277 |
set_halt(s, p->devep); |
278 |
/* fall through */
|
279 |
default:
|
280 |
p->len = USB_RET_NAK; |
281 |
break;
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282 |
} |
283 |
|
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usb_packet_complete(p); |
285 |
} |
286 |
|
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async_free(aurb); |
288 |
} |
289 |
} |
290 |
|
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static void async_cancel(USBPacket *unused, void *opaque) |
292 |
{ |
293 |
AsyncURB *aurb = opaque; |
294 |
USBHostDevice *s = aurb->hdev; |
295 |
|
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dprintf("husb: async cancel. aurb %p\n", aurb);
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297 |
|
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/* Mark it as dead (see async_complete above) */
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aurb->packet = NULL;
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300 |
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int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
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302 |
if (r < 0) { |
303 |
dprintf("husb: async. discard urb failed errno %d\n", errno);
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304 |
} |
305 |
} |
306 |
|
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static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) |
308 |
{ |
309 |
int dev_descr_len, config_descr_len;
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int interface, nb_interfaces, nb_configurations;
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311 |
int ret, i;
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312 |
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313 |
if (configuration == 0) /* address state - ignore */ |
314 |
return 1; |
315 |
|
316 |
dprintf("husb: claiming interfaces. config %d\n", configuration);
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317 |
|
318 |
i = 0;
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319 |
dev_descr_len = dev->descr[0];
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320 |
if (dev_descr_len > dev->descr_len)
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321 |
goto fail;
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322 |
nb_configurations = dev->descr[17];
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323 |
|
324 |
i += dev_descr_len; |
325 |
while (i < dev->descr_len) {
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326 |
dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
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dev->descr[i], dev->descr[i+1]);
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328 |
|
329 |
if (dev->descr[i+1] != USB_DT_CONFIG) { |
330 |
i += dev->descr[i]; |
331 |
continue;
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332 |
} |
333 |
config_descr_len = dev->descr[i]; |
334 |
|
335 |
printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); |
336 |
|
337 |
if (configuration < 0 || configuration == dev->descr[i + 5]) { |
338 |
configuration = dev->descr[i + 5];
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339 |
break;
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340 |
} |
341 |
|
342 |
i += config_descr_len; |
343 |
} |
344 |
|
345 |
if (i >= dev->descr_len) {
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346 |
fprintf(stderr, "husb: update iface failed. no matching configuration\n");
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347 |
goto fail;
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348 |
} |
349 |
nb_interfaces = dev->descr[i + 4];
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350 |
|
351 |
#ifdef USBDEVFS_DISCONNECT
|
352 |
/* earlier Linux 2.4 do not support that */
|
353 |
{ |
354 |
struct usbdevfs_ioctl ctrl;
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355 |
for (interface = 0; interface < nb_interfaces; interface++) { |
356 |
ctrl.ioctl_code = USBDEVFS_DISCONNECT; |
357 |
ctrl.ifno = interface; |
358 |
ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); |
359 |
if (ret < 0 && errno != ENODATA) { |
360 |
perror("USBDEVFS_DISCONNECT");
|
361 |
goto fail;
|
362 |
} |
363 |
} |
364 |
} |
365 |
#endif
|
366 |
|
367 |
/* XXX: only grab if all interfaces are free */
|
368 |
for (interface = 0; interface < nb_interfaces; interface++) { |
369 |
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); |
370 |
if (ret < 0) { |
371 |
if (errno == EBUSY) {
|
372 |
printf("husb: update iface. device already grabbed\n");
|
373 |
} else {
|
374 |
perror("husb: failed to claim interface");
|
375 |
} |
376 |
fail:
|
377 |
return 0; |
378 |
} |
379 |
} |
380 |
|
381 |
printf("husb: %d interfaces claimed for configuration %d\n",
|
382 |
nb_interfaces, configuration); |
383 |
|
384 |
dev->ninterfaces = nb_interfaces; |
385 |
dev->configuration = configuration; |
386 |
return 1; |
387 |
} |
388 |
|
389 |
static int usb_host_release_interfaces(USBHostDevice *s) |
390 |
{ |
391 |
int ret, i;
|
392 |
|
393 |
dprintf("husb: releasing interfaces\n");
|
394 |
|
395 |
for (i = 0; i < s->ninterfaces; i++) { |
396 |
ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); |
397 |
if (ret < 0) { |
398 |
perror("husb: failed to release interface");
|
399 |
return 0; |
400 |
} |
401 |
} |
402 |
|
403 |
return 1; |
404 |
} |
405 |
|
406 |
static void usb_host_handle_reset(USBDevice *dev) |
407 |
{ |
408 |
USBHostDevice *s = (USBHostDevice *) dev; |
409 |
|
410 |
dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);
|
411 |
|
412 |
ioctl(s->fd, USBDEVFS_RESET); |
413 |
|
414 |
usb_host_claim_interfaces(s, s->configuration); |
415 |
} |
416 |
|
417 |
static void usb_host_handle_destroy(USBDevice *dev) |
418 |
{ |
419 |
USBHostDevice *s = (USBHostDevice *)dev; |
420 |
|
421 |
s->closing = 1;
|
422 |
|
423 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
424 |
|
425 |
hostdev_unlink(s); |
426 |
|
427 |
async_complete(s); |
428 |
|
429 |
if (s->fd >= 0) |
430 |
close(s->fd); |
431 |
|
432 |
qemu_free(s); |
433 |
} |
434 |
|
435 |
static int usb_linux_update_endp_table(USBHostDevice *s); |
436 |
|
437 |
static int usb_host_handle_data(USBHostDevice *s, USBPacket *p) |
438 |
{ |
439 |
struct usbdevfs_urb *urb;
|
440 |
AsyncURB *aurb; |
441 |
int ret;
|
442 |
|
443 |
aurb = async_alloc(); |
444 |
aurb->hdev = s; |
445 |
aurb->packet = p; |
446 |
|
447 |
urb = &aurb->urb; |
448 |
|
449 |
if (p->pid == USB_TOKEN_IN)
|
450 |
urb->endpoint = p->devep | 0x80;
|
451 |
else
|
452 |
urb->endpoint = p->devep; |
453 |
|
454 |
if (is_halted(s, p->devep)) {
|
455 |
ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint); |
456 |
if (ret < 0) { |
457 |
dprintf("husb: failed to clear halt. ep 0x%x errno %d\n",
|
458 |
urb->endpoint, errno); |
459 |
return USB_RET_NAK;
|
460 |
} |
461 |
clear_halt(s, p->devep); |
462 |
} |
463 |
|
464 |
urb->buffer = p->data; |
465 |
urb->buffer_length = p->len; |
466 |
|
467 |
if (is_isoc(s, p->devep)) {
|
468 |
/* Setup ISOC transfer */
|
469 |
urb->type = USBDEVFS_URB_TYPE_ISO; |
470 |
urb->flags = USBDEVFS_URB_ISO_ASAP; |
471 |
urb->number_of_packets = 1;
|
472 |
urb->iso_frame_desc[0].length = p->len;
|
473 |
} else {
|
474 |
/* Setup bulk transfer */
|
475 |
urb->type = USBDEVFS_URB_TYPE_BULK; |
476 |
} |
477 |
|
478 |
urb->usercontext = s; |
479 |
|
480 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
481 |
|
482 |
dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb);
|
483 |
|
484 |
if (ret < 0) { |
485 |
dprintf("husb: submit failed. errno %d\n", errno);
|
486 |
async_free(aurb); |
487 |
|
488 |
switch(errno) {
|
489 |
case ETIMEDOUT:
|
490 |
return USB_RET_NAK;
|
491 |
case EPIPE:
|
492 |
default:
|
493 |
return USB_RET_STALL;
|
494 |
} |
495 |
} |
496 |
|
497 |
usb_defer_packet(p, async_cancel, aurb); |
498 |
return USB_RET_ASYNC;
|
499 |
} |
500 |
|
501 |
static int ctrl_error(void) |
502 |
{ |
503 |
if (errno == ETIMEDOUT)
|
504 |
return USB_RET_NAK;
|
505 |
else
|
506 |
return USB_RET_STALL;
|
507 |
} |
508 |
|
509 |
static int usb_host_set_address(USBHostDevice *s, int addr) |
510 |
{ |
511 |
dprintf("husb: ctrl set addr %u\n", addr);
|
512 |
s->dev.addr = addr; |
513 |
return 0; |
514 |
} |
515 |
|
516 |
static int usb_host_set_config(USBHostDevice *s, int config) |
517 |
{ |
518 |
usb_host_release_interfaces(s); |
519 |
|
520 |
int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
|
521 |
|
522 |
dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
|
523 |
|
524 |
if (ret < 0) |
525 |
return ctrl_error();
|
526 |
|
527 |
usb_host_claim_interfaces(s, config); |
528 |
return 0; |
529 |
} |
530 |
|
531 |
static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) |
532 |
{ |
533 |
struct usbdevfs_setinterface si;
|
534 |
int ret;
|
535 |
|
536 |
si.interface = iface; |
537 |
si.altsetting = alt; |
538 |
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); |
539 |
|
540 |
dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n",
|
541 |
iface, alt, ret, errno); |
542 |
|
543 |
if (ret < 0) |
544 |
return ctrl_error();
|
545 |
|
546 |
usb_linux_update_endp_table(s); |
547 |
return 0; |
548 |
} |
549 |
|
550 |
static int usb_host_handle_control(USBHostDevice *s, USBPacket *p) |
551 |
{ |
552 |
struct usbdevfs_urb *urb;
|
553 |
AsyncURB *aurb; |
554 |
int ret, value, index;
|
555 |
int buffer_len;
|
556 |
|
557 |
/*
|
558 |
* Process certain standard device requests.
|
559 |
* These are infrequent and are processed synchronously.
|
560 |
*/
|
561 |
value = le16_to_cpu(s->ctrl.req.wValue); |
562 |
index = le16_to_cpu(s->ctrl.req.wIndex); |
563 |
|
564 |
dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
|
565 |
s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, |
566 |
s->ctrl.len); |
567 |
|
568 |
if (s->ctrl.req.bRequestType == 0) { |
569 |
switch (s->ctrl.req.bRequest) {
|
570 |
case USB_REQ_SET_ADDRESS:
|
571 |
return usb_host_set_address(s, value);
|
572 |
|
573 |
case USB_REQ_SET_CONFIGURATION:
|
574 |
return usb_host_set_config(s, value & 0xff); |
575 |
} |
576 |
} |
577 |
|
578 |
if (s->ctrl.req.bRequestType == 1 && |
579 |
s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) |
580 |
return usb_host_set_interface(s, index, value);
|
581 |
|
582 |
/* The rest are asynchronous */
|
583 |
|
584 |
buffer_len = 8 + s->ctrl.len;
|
585 |
if (buffer_len > sizeof(s->ctrl.buffer)) { |
586 |
fprintf(stderr, "husb: ctrl buffer too small (%u > %zu)\n",
|
587 |
buffer_len, sizeof(s->ctrl.buffer));
|
588 |
return USB_RET_STALL;
|
589 |
} |
590 |
|
591 |
aurb = async_alloc(); |
592 |
aurb->hdev = s; |
593 |
aurb->packet = p; |
594 |
|
595 |
/*
|
596 |
* Setup ctrl transfer.
|
597 |
*
|
598 |
* s->ctrl is layed out such that data buffer immediately follows
|
599 |
* 'req' struct which is exactly what usbdevfs expects.
|
600 |
*/
|
601 |
urb = &aurb->urb; |
602 |
|
603 |
urb->type = USBDEVFS_URB_TYPE_CONTROL; |
604 |
urb->endpoint = p->devep; |
605 |
|
606 |
urb->buffer = &s->ctrl.req; |
607 |
urb->buffer_length = buffer_len; |
608 |
|
609 |
urb->usercontext = s; |
610 |
|
611 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
612 |
|
613 |
dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
|
614 |
|
615 |
if (ret < 0) { |
616 |
dprintf("husb: submit failed. errno %d\n", errno);
|
617 |
async_free(aurb); |
618 |
|
619 |
switch(errno) {
|
620 |
case ETIMEDOUT:
|
621 |
return USB_RET_NAK;
|
622 |
case EPIPE:
|
623 |
default:
|
624 |
return USB_RET_STALL;
|
625 |
} |
626 |
} |
627 |
|
628 |
usb_defer_packet(p, async_cancel, aurb); |
629 |
return USB_RET_ASYNC;
|
630 |
} |
631 |
|
632 |
static int do_token_setup(USBDevice *dev, USBPacket *p) |
633 |
{ |
634 |
USBHostDevice *s = (USBHostDevice *) dev; |
635 |
int ret = 0; |
636 |
|
637 |
if (p->len != 8) |
638 |
return USB_RET_STALL;
|
639 |
|
640 |
memcpy(&s->ctrl.req, p->data, 8);
|
641 |
s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength); |
642 |
s->ctrl.offset = 0;
|
643 |
s->ctrl.state = CTRL_STATE_SETUP; |
644 |
|
645 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
646 |
ret = usb_host_handle_control(s, p); |
647 |
if (ret < 0) |
648 |
return ret;
|
649 |
|
650 |
if (ret < s->ctrl.len)
|
651 |
s->ctrl.len = ret; |
652 |
s->ctrl.state = CTRL_STATE_DATA; |
653 |
} else {
|
654 |
if (s->ctrl.len == 0) |
655 |
s->ctrl.state = CTRL_STATE_ACK; |
656 |
else
|
657 |
s->ctrl.state = CTRL_STATE_DATA; |
658 |
} |
659 |
|
660 |
return ret;
|
661 |
} |
662 |
|
663 |
static int do_token_in(USBDevice *dev, USBPacket *p) |
664 |
{ |
665 |
USBHostDevice *s = (USBHostDevice *) dev; |
666 |
int ret = 0; |
667 |
|
668 |
if (p->devep != 0) |
669 |
return usb_host_handle_data(s, p);
|
670 |
|
671 |
switch(s->ctrl.state) {
|
672 |
case CTRL_STATE_ACK:
|
673 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
674 |
ret = usb_host_handle_control(s, p); |
675 |
if (ret == USB_RET_ASYNC)
|
676 |
return USB_RET_ASYNC;
|
677 |
|
678 |
s->ctrl.state = CTRL_STATE_IDLE; |
679 |
return ret > 0 ? 0 : ret; |
680 |
} |
681 |
|
682 |
return 0; |
683 |
|
684 |
case CTRL_STATE_DATA:
|
685 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
686 |
int len = s->ctrl.len - s->ctrl.offset;
|
687 |
if (len > p->len)
|
688 |
len = p->len; |
689 |
memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len); |
690 |
s->ctrl.offset += len; |
691 |
if (s->ctrl.offset >= s->ctrl.len)
|
692 |
s->ctrl.state = CTRL_STATE_ACK; |
693 |
return len;
|
694 |
} |
695 |
|
696 |
s->ctrl.state = CTRL_STATE_IDLE; |
697 |
return USB_RET_STALL;
|
698 |
|
699 |
default:
|
700 |
return USB_RET_STALL;
|
701 |
} |
702 |
} |
703 |
|
704 |
static int do_token_out(USBDevice *dev, USBPacket *p) |
705 |
{ |
706 |
USBHostDevice *s = (USBHostDevice *) dev; |
707 |
|
708 |
if (p->devep != 0) |
709 |
return usb_host_handle_data(s, p);
|
710 |
|
711 |
switch(s->ctrl.state) {
|
712 |
case CTRL_STATE_ACK:
|
713 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
714 |
s->ctrl.state = CTRL_STATE_IDLE; |
715 |
/* transfer OK */
|
716 |
} else {
|
717 |
/* ignore additional output */
|
718 |
} |
719 |
return 0; |
720 |
|
721 |
case CTRL_STATE_DATA:
|
722 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
723 |
int len = s->ctrl.len - s->ctrl.offset;
|
724 |
if (len > p->len)
|
725 |
len = p->len; |
726 |
memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len); |
727 |
s->ctrl.offset += len; |
728 |
if (s->ctrl.offset >= s->ctrl.len)
|
729 |
s->ctrl.state = CTRL_STATE_ACK; |
730 |
return len;
|
731 |
} |
732 |
|
733 |
s->ctrl.state = CTRL_STATE_IDLE; |
734 |
return USB_RET_STALL;
|
735 |
|
736 |
default:
|
737 |
return USB_RET_STALL;
|
738 |
} |
739 |
} |
740 |
|
741 |
/*
|
742 |
* Packet handler.
|
743 |
* Called by the HC (host controller).
|
744 |
*
|
745 |
* Returns length of the transaction or one of the USB_RET_XXX codes.
|
746 |
*/
|
747 |
static int usb_host_handle_packet(USBDevice *s, USBPacket *p) |
748 |
{ |
749 |
switch(p->pid) {
|
750 |
case USB_MSG_ATTACH:
|
751 |
s->state = USB_STATE_ATTACHED; |
752 |
return 0; |
753 |
|
754 |
case USB_MSG_DETACH:
|
755 |
s->state = USB_STATE_NOTATTACHED; |
756 |
return 0; |
757 |
|
758 |
case USB_MSG_RESET:
|
759 |
s->remote_wakeup = 0;
|
760 |
s->addr = 0;
|
761 |
s->state = USB_STATE_DEFAULT; |
762 |
s->info->handle_reset(s); |
763 |
return 0; |
764 |
} |
765 |
|
766 |
/* Rest of the PIDs must match our address */
|
767 |
if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
|
768 |
return USB_RET_NODEV;
|
769 |
|
770 |
switch (p->pid) {
|
771 |
case USB_TOKEN_SETUP:
|
772 |
return do_token_setup(s, p);
|
773 |
|
774 |
case USB_TOKEN_IN:
|
775 |
return do_token_in(s, p);
|
776 |
|
777 |
case USB_TOKEN_OUT:
|
778 |
return do_token_out(s, p);
|
779 |
|
780 |
default:
|
781 |
return USB_RET_STALL;
|
782 |
} |
783 |
} |
784 |
|
785 |
/* returns 1 on problem encountered or 0 for success */
|
786 |
static int usb_linux_update_endp_table(USBHostDevice *s) |
787 |
{ |
788 |
uint8_t *descriptors; |
789 |
uint8_t devep, type, configuration, alt_interface; |
790 |
struct usb_ctrltransfer ct;
|
791 |
int interface, ret, length, i;
|
792 |
|
793 |
ct.bRequestType = USB_DIR_IN; |
794 |
ct.bRequest = USB_REQ_GET_CONFIGURATION; |
795 |
ct.wValue = 0;
|
796 |
ct.wIndex = 0;
|
797 |
ct.wLength = 1;
|
798 |
ct.data = &configuration; |
799 |
ct.timeout = 50;
|
800 |
|
801 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
802 |
if (ret < 0) { |
803 |
perror("usb_linux_update_endp_table");
|
804 |
return 1; |
805 |
} |
806 |
|
807 |
/* in address state */
|
808 |
if (configuration == 0) |
809 |
return 1; |
810 |
|
811 |
/* get the desired configuration, interface, and endpoint descriptors
|
812 |
* from device description */
|
813 |
descriptors = &s->descr[18];
|
814 |
length = s->descr_len - 18;
|
815 |
i = 0;
|
816 |
|
817 |
if (descriptors[i + 1] != USB_DT_CONFIG || |
818 |
descriptors[i + 5] != configuration) {
|
819 |
dprintf("invalid descriptor data - configuration\n");
|
820 |
return 1; |
821 |
} |
822 |
i += descriptors[i]; |
823 |
|
824 |
while (i < length) {
|
825 |
if (descriptors[i + 1] != USB_DT_INTERFACE || |
826 |
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
827 |
descriptors[i + 4] == 0)) { |
828 |
i += descriptors[i]; |
829 |
continue;
|
830 |
} |
831 |
|
832 |
interface = descriptors[i + 2];
|
833 |
|
834 |
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
835 |
ct.bRequest = USB_REQ_GET_INTERFACE; |
836 |
ct.wValue = 0;
|
837 |
ct.wIndex = interface; |
838 |
ct.wLength = 1;
|
839 |
ct.data = &alt_interface; |
840 |
ct.timeout = 50;
|
841 |
|
842 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
843 |
if (ret < 0) { |
844 |
alt_interface = interface; |
845 |
} |
846 |
|
847 |
/* the current interface descriptor is the active interface
|
848 |
* and has endpoints */
|
849 |
if (descriptors[i + 3] != alt_interface) { |
850 |
i += descriptors[i]; |
851 |
continue;
|
852 |
} |
853 |
|
854 |
/* advance to the endpoints */
|
855 |
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) |
856 |
i += descriptors[i]; |
857 |
|
858 |
if (i >= length)
|
859 |
break;
|
860 |
|
861 |
while (i < length) {
|
862 |
if (descriptors[i + 1] != USB_DT_ENDPOINT) |
863 |
break;
|
864 |
|
865 |
devep = descriptors[i + 2];
|
866 |
switch (descriptors[i + 3] & 0x3) { |
867 |
case 0x00: |
868 |
type = USBDEVFS_URB_TYPE_CONTROL; |
869 |
break;
|
870 |
case 0x01: |
871 |
type = USBDEVFS_URB_TYPE_ISO; |
872 |
break;
|
873 |
case 0x02: |
874 |
type = USBDEVFS_URB_TYPE_BULK; |
875 |
break;
|
876 |
case 0x03: |
877 |
type = USBDEVFS_URB_TYPE_INTERRUPT; |
878 |
break;
|
879 |
default:
|
880 |
dprintf("usb_host: malformed endpoint type\n");
|
881 |
type = USBDEVFS_URB_TYPE_BULK; |
882 |
} |
883 |
s->endp_table[(devep & 0xf) - 1].type = type; |
884 |
s->endp_table[(devep & 0xf) - 1].halted = 0; |
885 |
|
886 |
i += descriptors[i]; |
887 |
} |
888 |
} |
889 |
return 0; |
890 |
} |
891 |
|
892 |
static int usb_host_initfn(USBDevice *dev) |
893 |
{ |
894 |
return 0; |
895 |
} |
896 |
|
897 |
static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name) |
898 |
{ |
899 |
int fd = -1, ret; |
900 |
USBDevice *d = NULL;
|
901 |
USBHostDevice *dev; |
902 |
struct usbdevfs_connectinfo ci;
|
903 |
char buf[1024]; |
904 |
|
905 |
printf("husb: open device %d.%d\n", bus_num, addr);
|
906 |
|
907 |
if (!usb_host_device_path) {
|
908 |
perror("husb: USB Host Device Path not set");
|
909 |
goto fail;
|
910 |
} |
911 |
snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, |
912 |
bus_num, addr); |
913 |
fd = open(buf, O_RDWR | O_NONBLOCK); |
914 |
if (fd < 0) { |
915 |
perror(buf); |
916 |
goto fail;
|
917 |
} |
918 |
dprintf("husb: opened %s\n", buf);
|
919 |
|
920 |
d = usb_create(NULL /* FIXME */, "USB Host Device"); |
921 |
dev = DO_UPCAST(USBHostDevice, dev, d); |
922 |
|
923 |
dev->bus_num = bus_num; |
924 |
dev->addr = addr; |
925 |
dev->fd = fd; |
926 |
|
927 |
/* read the device description */
|
928 |
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
929 |
if (dev->descr_len <= 0) { |
930 |
perror("husb: reading device data failed");
|
931 |
goto fail;
|
932 |
} |
933 |
|
934 |
#ifdef DEBUG
|
935 |
{ |
936 |
int x;
|
937 |
printf("=== begin dumping device descriptor data ===\n");
|
938 |
for (x = 0; x < dev->descr_len; x++) |
939 |
printf("%02x ", dev->descr[x]);
|
940 |
printf("\n=== end dumping device descriptor data ===\n");
|
941 |
} |
942 |
#endif
|
943 |
|
944 |
|
945 |
/*
|
946 |
* Initial configuration is -1 which makes us claim first
|
947 |
* available config. We used to start with 1, which does not
|
948 |
* always work. I've seen devices where first config starts
|
949 |
* with 2.
|
950 |
*/
|
951 |
if (!usb_host_claim_interfaces(dev, -1)) |
952 |
goto fail;
|
953 |
|
954 |
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
955 |
if (ret < 0) { |
956 |
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
957 |
goto fail;
|
958 |
} |
959 |
|
960 |
printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
|
961 |
|
962 |
ret = usb_linux_update_endp_table(dev); |
963 |
if (ret)
|
964 |
goto fail;
|
965 |
|
966 |
if (ci.slow)
|
967 |
dev->dev.speed = USB_SPEED_LOW; |
968 |
else
|
969 |
dev->dev.speed = USB_SPEED_HIGH; |
970 |
|
971 |
if (!prod_name || prod_name[0] == '\0') |
972 |
snprintf(dev->dev.devname, sizeof(dev->dev.devname),
|
973 |
"host:%d.%d", bus_num, addr);
|
974 |
else
|
975 |
pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
|
976 |
prod_name); |
977 |
|
978 |
/* USB devio uses 'write' flag to check for async completions */
|
979 |
qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
|
980 |
|
981 |
hostdev_link(dev); |
982 |
|
983 |
qdev_init(&d->qdev); |
984 |
return (USBDevice *) dev;
|
985 |
|
986 |
fail:
|
987 |
if (d)
|
988 |
qdev_free(&d->qdev); |
989 |
if (fd != -1) |
990 |
close(fd); |
991 |
return NULL; |
992 |
} |
993 |
|
994 |
static struct USBDeviceInfo usb_host_dev_info = { |
995 |
.qdev.name = "USB Host Device",
|
996 |
.qdev.size = sizeof(USBHostDevice),
|
997 |
.init = usb_host_initfn, |
998 |
.handle_packet = usb_host_handle_packet, |
999 |
.handle_reset = usb_host_handle_reset, |
1000 |
#if 0
|
1001 |
.handle_control = usb_host_handle_control,
|
1002 |
.handle_data = usb_host_handle_data,
|
1003 |
#endif
|
1004 |
.handle_destroy = usb_host_handle_destroy, |
1005 |
}; |
1006 |
|
1007 |
static void usb_host_register_devices(void) |
1008 |
{ |
1009 |
usb_qdev_register(&usb_host_dev_info); |
1010 |
} |
1011 |
device_init(usb_host_register_devices) |
1012 |
|
1013 |
static int usb_host_auto_add(const char *spec); |
1014 |
static int usb_host_auto_del(const char *spec); |
1015 |
|
1016 |
USBDevice *usb_host_device_open(const char *devname) |
1017 |
{ |
1018 |
Monitor *mon = cur_mon; |
1019 |
int bus_num, addr;
|
1020 |
char product_name[PRODUCT_NAME_SZ];
|
1021 |
|
1022 |
if (strstr(devname, "auto:")) { |
1023 |
usb_host_auto_add(devname); |
1024 |
return NULL; |
1025 |
} |
1026 |
|
1027 |
if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), |
1028 |
devname) < 0)
|
1029 |
return NULL; |
1030 |
|
1031 |
if (hostdev_find(bus_num, addr)) {
|
1032 |
monitor_printf(mon, "husb: host usb device %d.%d is already open\n",
|
1033 |
bus_num, addr); |
1034 |
return NULL; |
1035 |
} |
1036 |
|
1037 |
return usb_host_device_open_addr(bus_num, addr, product_name);
|
1038 |
} |
1039 |
|
1040 |
int usb_host_device_close(const char *devname) |
1041 |
{ |
1042 |
char product_name[PRODUCT_NAME_SZ];
|
1043 |
int bus_num, addr;
|
1044 |
USBHostDevice *s; |
1045 |
|
1046 |
if (strstr(devname, "auto:")) |
1047 |
return usb_host_auto_del(devname);
|
1048 |
|
1049 |
if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), |
1050 |
devname) < 0)
|
1051 |
return -1; |
1052 |
|
1053 |
s = hostdev_find(bus_num, addr); |
1054 |
if (s) {
|
1055 |
usb_device_delete_addr(s->bus_num, s->dev.addr); |
1056 |
return 0; |
1057 |
} |
1058 |
|
1059 |
return -1; |
1060 |
} |
1061 |
|
1062 |
static int get_tag_value(char *buf, int buf_size, |
1063 |
const char *str, const char *tag, |
1064 |
const char *stopchars) |
1065 |
{ |
1066 |
const char *p; |
1067 |
char *q;
|
1068 |
p = strstr(str, tag); |
1069 |
if (!p)
|
1070 |
return -1; |
1071 |
p += strlen(tag); |
1072 |
while (qemu_isspace(*p))
|
1073 |
p++; |
1074 |
q = buf; |
1075 |
while (*p != '\0' && !strchr(stopchars, *p)) { |
1076 |
if ((q - buf) < (buf_size - 1)) |
1077 |
*q++ = *p; |
1078 |
p++; |
1079 |
} |
1080 |
*q = '\0';
|
1081 |
return q - buf;
|
1082 |
} |
1083 |
|
1084 |
/*
|
1085 |
* Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
|
1086 |
* host's USB devices. This is legacy support since many distributions
|
1087 |
* are moving to /sys/bus/usb
|
1088 |
*/
|
1089 |
static int usb_host_scan_dev(void *opaque, USBScanFunc *func) |
1090 |
{ |
1091 |
FILE *f = NULL;
|
1092 |
char line[1024]; |
1093 |
char buf[1024]; |
1094 |
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
|
1095 |
char product_name[512]; |
1096 |
int ret = 0; |
1097 |
|
1098 |
if (!usb_host_device_path) {
|
1099 |
perror("husb: USB Host Device Path not set");
|
1100 |
goto the_end;
|
1101 |
} |
1102 |
snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); |
1103 |
f = fopen(line, "r");
|
1104 |
if (!f) {
|
1105 |
perror("husb: cannot open devices file");
|
1106 |
goto the_end;
|
1107 |
} |
1108 |
|
1109 |
device_count = 0;
|
1110 |
bus_num = addr = speed = class_id = product_id = vendor_id = 0;
|
1111 |
for(;;) {
|
1112 |
if (fgets(line, sizeof(line), f) == NULL) |
1113 |
break;
|
1114 |
if (strlen(line) > 0) |
1115 |
line[strlen(line) - 1] = '\0'; |
1116 |
if (line[0] == 'T' && line[1] == ':') { |
1117 |
if (device_count && (vendor_id || product_id)) {
|
1118 |
/* New device. Add the previously discovered device. */
|
1119 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1120 |
product_id, product_name, speed); |
1121 |
if (ret)
|
1122 |
goto the_end;
|
1123 |
} |
1124 |
if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) |
1125 |
goto fail;
|
1126 |
bus_num = atoi(buf); |
1127 |
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) |
1128 |
goto fail;
|
1129 |
addr = atoi(buf); |
1130 |
if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) |
1131 |
goto fail;
|
1132 |
if (!strcmp(buf, "480")) |
1133 |
speed = USB_SPEED_HIGH; |
1134 |
else if (!strcmp(buf, "1.5")) |
1135 |
speed = USB_SPEED_LOW; |
1136 |
else
|
1137 |
speed = USB_SPEED_FULL; |
1138 |
product_name[0] = '\0'; |
1139 |
class_id = 0xff;
|
1140 |
device_count++; |
1141 |
product_id = 0;
|
1142 |
vendor_id = 0;
|
1143 |
} else if (line[0] == 'P' && line[1] == ':') { |
1144 |
if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) |
1145 |
goto fail;
|
1146 |
vendor_id = strtoul(buf, NULL, 16); |
1147 |
if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) |
1148 |
goto fail;
|
1149 |
product_id = strtoul(buf, NULL, 16); |
1150 |
} else if (line[0] == 'S' && line[1] == ':') { |
1151 |
if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) |
1152 |
goto fail;
|
1153 |
pstrcpy(product_name, sizeof(product_name), buf);
|
1154 |
} else if (line[0] == 'D' && line[1] == ':') { |
1155 |
if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) |
1156 |
goto fail;
|
1157 |
class_id = strtoul(buf, NULL, 16); |
1158 |
} |
1159 |
fail: ;
|
1160 |
} |
1161 |
if (device_count && (vendor_id || product_id)) {
|
1162 |
/* Add the last device. */
|
1163 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1164 |
product_id, product_name, speed); |
1165 |
} |
1166 |
the_end:
|
1167 |
if (f)
|
1168 |
fclose(f); |
1169 |
return ret;
|
1170 |
} |
1171 |
|
1172 |
/*
|
1173 |
* Read sys file-system device file
|
1174 |
*
|
1175 |
* @line address of buffer to put file contents in
|
1176 |
* @line_size size of line
|
1177 |
* @device_file path to device file (printf format string)
|
1178 |
* @device_name device being opened (inserted into device_file)
|
1179 |
*
|
1180 |
* @return 0 failed, 1 succeeded ('line' contains data)
|
1181 |
*/
|
1182 |
static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name) |
1183 |
{ |
1184 |
Monitor *mon = cur_mon; |
1185 |
FILE *f; |
1186 |
int ret = 0; |
1187 |
char filename[PATH_MAX];
|
1188 |
|
1189 |
snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
|
1190 |
device_file); |
1191 |
f = fopen(filename, "r");
|
1192 |
if (f) {
|
1193 |
fgets(line, line_size, f); |
1194 |
fclose(f); |
1195 |
ret = 1;
|
1196 |
} else {
|
1197 |
monitor_printf(mon, "husb: could not open %s\n", filename);
|
1198 |
} |
1199 |
|
1200 |
return ret;
|
1201 |
} |
1202 |
|
1203 |
/*
|
1204 |
* Use /sys/bus/usb/devices/ directory to determine host's USB
|
1205 |
* devices.
|
1206 |
*
|
1207 |
* This code is based on Robert Schiele's original patches posted to
|
1208 |
* the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
|
1209 |
*/
|
1210 |
static int usb_host_scan_sys(void *opaque, USBScanFunc *func) |
1211 |
{ |
1212 |
DIR *dir = NULL;
|
1213 |
char line[1024]; |
1214 |
int bus_num, addr, speed, class_id, product_id, vendor_id;
|
1215 |
int ret = 0; |
1216 |
char product_name[512]; |
1217 |
struct dirent *de;
|
1218 |
|
1219 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
1220 |
if (!dir) {
|
1221 |
perror("husb: cannot open devices directory");
|
1222 |
goto the_end;
|
1223 |
} |
1224 |
|
1225 |
while ((de = readdir(dir))) {
|
1226 |
if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { |
1227 |
char *tmpstr = de->d_name;
|
1228 |
if (!strncmp(de->d_name, "usb", 3)) |
1229 |
tmpstr += 3;
|
1230 |
bus_num = atoi(tmpstr); |
1231 |
|
1232 |
if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) |
1233 |
goto the_end;
|
1234 |
if (sscanf(line, "%d", &addr) != 1) |
1235 |
goto the_end;
|
1236 |
|
1237 |
if (!usb_host_read_file(line, sizeof(line), "bDeviceClass", |
1238 |
de->d_name)) |
1239 |
goto the_end;
|
1240 |
if (sscanf(line, "%x", &class_id) != 1) |
1241 |
goto the_end;
|
1242 |
|
1243 |
if (!usb_host_read_file(line, sizeof(line), "idVendor", de->d_name)) |
1244 |
goto the_end;
|
1245 |
if (sscanf(line, "%x", &vendor_id) != 1) |
1246 |
goto the_end;
|
1247 |
|
1248 |
if (!usb_host_read_file(line, sizeof(line), "idProduct", |
1249 |
de->d_name)) |
1250 |
goto the_end;
|
1251 |
if (sscanf(line, "%x", &product_id) != 1) |
1252 |
goto the_end;
|
1253 |
|
1254 |
if (!usb_host_read_file(line, sizeof(line), "product", |
1255 |
de->d_name)) { |
1256 |
*product_name = 0;
|
1257 |
} else {
|
1258 |
if (strlen(line) > 0) |
1259 |
line[strlen(line) - 1] = '\0'; |
1260 |
pstrcpy(product_name, sizeof(product_name), line);
|
1261 |
} |
1262 |
|
1263 |
if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) |
1264 |
goto the_end;
|
1265 |
if (!strcmp(line, "480\n")) |
1266 |
speed = USB_SPEED_HIGH; |
1267 |
else if (!strcmp(line, "1.5\n")) |
1268 |
speed = USB_SPEED_LOW; |
1269 |
else
|
1270 |
speed = USB_SPEED_FULL; |
1271 |
|
1272 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1273 |
product_id, product_name, speed); |
1274 |
if (ret)
|
1275 |
goto the_end;
|
1276 |
} |
1277 |
} |
1278 |
the_end:
|
1279 |
if (dir)
|
1280 |
closedir(dir); |
1281 |
return ret;
|
1282 |
} |
1283 |
|
1284 |
/*
|
1285 |
* Determine how to access the host's USB devices and call the
|
1286 |
* specific support function.
|
1287 |
*/
|
1288 |
static int usb_host_scan(void *opaque, USBScanFunc *func) |
1289 |
{ |
1290 |
Monitor *mon = cur_mon; |
1291 |
FILE *f = NULL;
|
1292 |
DIR *dir = NULL;
|
1293 |
int ret = 0; |
1294 |
const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; |
1295 |
char devpath[PATH_MAX];
|
1296 |
|
1297 |
/* only check the host once */
|
1298 |
if (!usb_fs_type) {
|
1299 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
1300 |
if (dir) {
|
1301 |
/* devices found in /dev/bus/usb/ (yes - not a mistake!) */
|
1302 |
strcpy(devpath, USBDEVBUS_PATH); |
1303 |
usb_fs_type = USB_FS_SYS; |
1304 |
closedir(dir); |
1305 |
dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH); |
1306 |
goto found_devices;
|
1307 |
} |
1308 |
f = fopen(USBPROCBUS_PATH "/devices", "r"); |
1309 |
if (f) {
|
1310 |
/* devices found in /proc/bus/usb/ */
|
1311 |
strcpy(devpath, USBPROCBUS_PATH); |
1312 |
usb_fs_type = USB_FS_PROC; |
1313 |
fclose(f); |
1314 |
dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH); |
1315 |
goto found_devices;
|
1316 |
} |
1317 |
/* try additional methods if an access method hasn't been found yet */
|
1318 |
f = fopen(USBDEVBUS_PATH "/devices", "r"); |
1319 |
if (f) {
|
1320 |
/* devices found in /dev/bus/usb/ */
|
1321 |
strcpy(devpath, USBDEVBUS_PATH); |
1322 |
usb_fs_type = USB_FS_DEV; |
1323 |
fclose(f); |
1324 |
dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH); |
1325 |
goto found_devices;
|
1326 |
} |
1327 |
found_devices:
|
1328 |
if (!usb_fs_type) {
|
1329 |
monitor_printf(mon, "husb: unable to access USB devices\n");
|
1330 |
return -ENOENT;
|
1331 |
} |
1332 |
|
1333 |
/* the module setting (used later for opening devices) */
|
1334 |
usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
|
1335 |
strcpy(usb_host_device_path, devpath); |
1336 |
monitor_printf(mon, "husb: using %s file-system with %s\n",
|
1337 |
fs_type[usb_fs_type], usb_host_device_path); |
1338 |
} |
1339 |
|
1340 |
switch (usb_fs_type) {
|
1341 |
case USB_FS_PROC:
|
1342 |
case USB_FS_DEV:
|
1343 |
ret = usb_host_scan_dev(opaque, func); |
1344 |
break;
|
1345 |
case USB_FS_SYS:
|
1346 |
ret = usb_host_scan_sys(opaque, func); |
1347 |
break;
|
1348 |
default:
|
1349 |
ret = -EINVAL; |
1350 |
break;
|
1351 |
} |
1352 |
return ret;
|
1353 |
} |
1354 |
|
1355 |
struct USBAutoFilter {
|
1356 |
struct USBAutoFilter *next;
|
1357 |
int bus_num;
|
1358 |
int addr;
|
1359 |
int vendor_id;
|
1360 |
int product_id;
|
1361 |
}; |
1362 |
|
1363 |
static QEMUTimer *usb_auto_timer;
|
1364 |
static struct USBAutoFilter *usb_auto_filter; |
1365 |
|
1366 |
static int usb_host_auto_scan(void *opaque, int bus_num, int addr, |
1367 |
int class_id, int vendor_id, int product_id, |
1368 |
const char *product_name, int speed) |
1369 |
{ |
1370 |
struct USBAutoFilter *f;
|
1371 |
struct USBDevice *dev;
|
1372 |
|
1373 |
/* Ignore hubs */
|
1374 |
if (class_id == 9) |
1375 |
return 0; |
1376 |
|
1377 |
for (f = usb_auto_filter; f; f = f->next) {
|
1378 |
if (f->bus_num >= 0 && f->bus_num != bus_num) |
1379 |
continue;
|
1380 |
|
1381 |
if (f->addr >= 0 && f->addr != addr) |
1382 |
continue;
|
1383 |
|
1384 |
if (f->vendor_id >= 0 && f->vendor_id != vendor_id) |
1385 |
continue;
|
1386 |
|
1387 |
if (f->product_id >= 0 && f->product_id != product_id) |
1388 |
continue;
|
1389 |
|
1390 |
/* We got a match */
|
1391 |
|
1392 |
/* Allredy attached ? */
|
1393 |
if (hostdev_find(bus_num, addr))
|
1394 |
return 0; |
1395 |
|
1396 |
dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
|
1397 |
|
1398 |
dev = usb_host_device_open_addr(bus_num, addr, product_name); |
1399 |
if (dev)
|
1400 |
qdev_init(&dev->qdev); |
1401 |
} |
1402 |
|
1403 |
return 0; |
1404 |
} |
1405 |
|
1406 |
static void usb_host_auto_timer(void *unused) |
1407 |
{ |
1408 |
usb_host_scan(NULL, usb_host_auto_scan);
|
1409 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
1410 |
} |
1411 |
|
1412 |
/*
|
1413 |
* Autoconnect filter
|
1414 |
* Format:
|
1415 |
* auto:bus:dev[:vid:pid]
|
1416 |
* auto:bus.dev[:vid:pid]
|
1417 |
*
|
1418 |
* bus - bus number (dec, * means any)
|
1419 |
* dev - device number (dec, * means any)
|
1420 |
* vid - vendor id (hex, * means any)
|
1421 |
* pid - product id (hex, * means any)
|
1422 |
*
|
1423 |
* See 'lsusb' output.
|
1424 |
*/
|
1425 |
static int parse_filter(const char *spec, struct USBAutoFilter *f) |
1426 |
{ |
1427 |
enum { BUS, DEV, VID, PID, DONE };
|
1428 |
const char *p = spec; |
1429 |
int i;
|
1430 |
|
1431 |
f->bus_num = -1;
|
1432 |
f->addr = -1;
|
1433 |
f->vendor_id = -1;
|
1434 |
f->product_id = -1;
|
1435 |
|
1436 |
for (i = BUS; i < DONE; i++) {
|
1437 |
p = strpbrk(p, ":.");
|
1438 |
if (!p) break; |
1439 |
p++; |
1440 |
|
1441 |
if (*p == '*') |
1442 |
continue;
|
1443 |
|
1444 |
switch(i) {
|
1445 |
case BUS: f->bus_num = strtol(p, NULL, 10); break; |
1446 |
case DEV: f->addr = strtol(p, NULL, 10); break; |
1447 |
case VID: f->vendor_id = strtol(p, NULL, 16); break; |
1448 |
case PID: f->product_id = strtol(p, NULL, 16); break; |
1449 |
} |
1450 |
} |
1451 |
|
1452 |
if (i < DEV) {
|
1453 |
fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
|
1454 |
return -1; |
1455 |
} |
1456 |
|
1457 |
return 0; |
1458 |
} |
1459 |
|
1460 |
static int match_filter(const struct USBAutoFilter *f1, |
1461 |
const struct USBAutoFilter *f2) |
1462 |
{ |
1463 |
return f1->bus_num == f2->bus_num &&
|
1464 |
f1->addr == f2->addr && |
1465 |
f1->vendor_id == f2->vendor_id && |
1466 |
f1->product_id == f2->product_id; |
1467 |
} |
1468 |
|
1469 |
static int usb_host_auto_add(const char *spec) |
1470 |
{ |
1471 |
struct USBAutoFilter filter, *f;
|
1472 |
|
1473 |
if (parse_filter(spec, &filter) < 0) |
1474 |
return -1; |
1475 |
|
1476 |
f = qemu_mallocz(sizeof(*f));
|
1477 |
|
1478 |
*f = filter; |
1479 |
|
1480 |
if (!usb_auto_filter) {
|
1481 |
/*
|
1482 |
* First entry. Init and start the monitor.
|
1483 |
* Right now we're using timer to check for new devices.
|
1484 |
* If this turns out to be too expensive we can move that into a
|
1485 |
* separate thread.
|
1486 |
*/
|
1487 |
usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL);
|
1488 |
if (!usb_auto_timer) {
|
1489 |
fprintf(stderr, "husb: failed to allocate auto scan timer\n");
|
1490 |
qemu_free(f); |
1491 |
return -1; |
1492 |
} |
1493 |
|
1494 |
/* Check for new devices every two seconds */
|
1495 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
1496 |
} |
1497 |
|
1498 |
dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n",
|
1499 |
f->bus_num, f->addr, f->vendor_id, f->product_id); |
1500 |
|
1501 |
f->next = usb_auto_filter; |
1502 |
usb_auto_filter = f; |
1503 |
|
1504 |
return 0; |
1505 |
} |
1506 |
|
1507 |
static int usb_host_auto_del(const char *spec) |
1508 |
{ |
1509 |
struct USBAutoFilter *pf = usb_auto_filter;
|
1510 |
struct USBAutoFilter **prev = &usb_auto_filter;
|
1511 |
struct USBAutoFilter filter;
|
1512 |
|
1513 |
if (parse_filter(spec, &filter) < 0) |
1514 |
return -1; |
1515 |
|
1516 |
while (pf) {
|
1517 |
if (match_filter(pf, &filter)) {
|
1518 |
dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n",
|
1519 |
pf->bus_num, pf->addr, pf->vendor_id, pf->product_id); |
1520 |
|
1521 |
*prev = pf->next; |
1522 |
|
1523 |
if (!usb_auto_filter) {
|
1524 |
/* No more filters. Stop scanning. */
|
1525 |
qemu_del_timer(usb_auto_timer); |
1526 |
qemu_free_timer(usb_auto_timer); |
1527 |
} |
1528 |
|
1529 |
return 0; |
1530 |
} |
1531 |
|
1532 |
prev = &pf->next; |
1533 |
pf = pf->next; |
1534 |
} |
1535 |
|
1536 |
return -1; |
1537 |
} |
1538 |
|
1539 |
typedef struct FindDeviceState { |
1540 |
int vendor_id;
|
1541 |
int product_id;
|
1542 |
int bus_num;
|
1543 |
int addr;
|
1544 |
char product_name[PRODUCT_NAME_SZ];
|
1545 |
} FindDeviceState; |
1546 |
|
1547 |
static int usb_host_find_device_scan(void *opaque, int bus_num, int addr, |
1548 |
int class_id,
|
1549 |
int vendor_id, int product_id, |
1550 |
const char *product_name, int speed) |
1551 |
{ |
1552 |
FindDeviceState *s = opaque; |
1553 |
if ((vendor_id == s->vendor_id &&
|
1554 |
product_id == s->product_id) || |
1555 |
(bus_num == s->bus_num && |
1556 |
addr == s->addr)) { |
1557 |
pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name); |
1558 |
s->bus_num = bus_num; |
1559 |
s->addr = addr; |
1560 |
return 1; |
1561 |
} else {
|
1562 |
return 0; |
1563 |
} |
1564 |
} |
1565 |
|
1566 |
/* the syntax is :
|
1567 |
'bus.addr' (decimal numbers) or
|
1568 |
'vendor_id:product_id' (hexa numbers) */
|
1569 |
static int usb_host_find_device(int *pbus_num, int *paddr, |
1570 |
char *product_name, int product_name_size, |
1571 |
const char *devname) |
1572 |
{ |
1573 |
const char *p; |
1574 |
int ret;
|
1575 |
FindDeviceState fs; |
1576 |
|
1577 |
p = strchr(devname, '.');
|
1578 |
if (p) {
|
1579 |
*pbus_num = strtoul(devname, NULL, 0); |
1580 |
*paddr = strtoul(p + 1, NULL, 0); |
1581 |
fs.bus_num = *pbus_num; |
1582 |
fs.addr = *paddr; |
1583 |
ret = usb_host_scan(&fs, usb_host_find_device_scan); |
1584 |
if (ret)
|
1585 |
pstrcpy(product_name, product_name_size, fs.product_name); |
1586 |
return 0; |
1587 |
} |
1588 |
|
1589 |
p = strchr(devname, ':');
|
1590 |
if (p) {
|
1591 |
fs.vendor_id = strtoul(devname, NULL, 16); |
1592 |
fs.product_id = strtoul(p + 1, NULL, 16); |
1593 |
ret = usb_host_scan(&fs, usb_host_find_device_scan); |
1594 |
if (ret) {
|
1595 |
*pbus_num = fs.bus_num; |
1596 |
*paddr = fs.addr; |
1597 |
pstrcpy(product_name, product_name_size, fs.product_name); |
1598 |
return 0; |
1599 |
} |
1600 |
} |
1601 |
return -1; |
1602 |
} |
1603 |
|
1604 |
/**********************/
|
1605 |
/* USB host device info */
|
1606 |
|
1607 |
struct usb_class_info {
|
1608 |
int class;
|
1609 |
const char *class_name; |
1610 |
}; |
1611 |
|
1612 |
static const struct usb_class_info usb_class_info[] = { |
1613 |
{ USB_CLASS_AUDIO, "Audio"},
|
1614 |
{ USB_CLASS_COMM, "Communication"},
|
1615 |
{ USB_CLASS_HID, "HID"},
|
1616 |
{ USB_CLASS_HUB, "Hub" },
|
1617 |
{ USB_CLASS_PHYSICAL, "Physical" },
|
1618 |
{ USB_CLASS_PRINTER, "Printer" },
|
1619 |
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
1620 |
{ USB_CLASS_CDC_DATA, "Data" },
|
1621 |
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
1622 |
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
1623 |
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
1624 |
{ USB_CLASS_CSCID, "Smart Card" },
|
1625 |
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
1626 |
{ -1, NULL } |
1627 |
}; |
1628 |
|
1629 |
static const char *usb_class_str(uint8_t class) |
1630 |
{ |
1631 |
const struct usb_class_info *p; |
1632 |
for(p = usb_class_info; p->class != -1; p++) { |
1633 |
if (p->class == class)
|
1634 |
break;
|
1635 |
} |
1636 |
return p->class_name;
|
1637 |
} |
1638 |
|
1639 |
static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id, |
1640 |
int vendor_id, int product_id, |
1641 |
const char *product_name, |
1642 |
int speed)
|
1643 |
{ |
1644 |
const char *class_str, *speed_str; |
1645 |
|
1646 |
switch(speed) {
|
1647 |
case USB_SPEED_LOW:
|
1648 |
speed_str = "1.5";
|
1649 |
break;
|
1650 |
case USB_SPEED_FULL:
|
1651 |
speed_str = "12";
|
1652 |
break;
|
1653 |
case USB_SPEED_HIGH:
|
1654 |
speed_str = "480";
|
1655 |
break;
|
1656 |
default:
|
1657 |
speed_str = "?";
|
1658 |
break;
|
1659 |
} |
1660 |
|
1661 |
monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n",
|
1662 |
bus_num, addr, speed_str); |
1663 |
class_str = usb_class_str(class_id); |
1664 |
if (class_str)
|
1665 |
monitor_printf(mon, " %s:", class_str);
|
1666 |
else
|
1667 |
monitor_printf(mon, " Class %02x:", class_id);
|
1668 |
monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
|
1669 |
if (product_name[0] != '\0') |
1670 |
monitor_printf(mon, ", %s", product_name);
|
1671 |
monitor_printf(mon, "\n");
|
1672 |
} |
1673 |
|
1674 |
static int usb_host_info_device(void *opaque, int bus_num, int addr, |
1675 |
int class_id,
|
1676 |
int vendor_id, int product_id, |
1677 |
const char *product_name, |
1678 |
int speed)
|
1679 |
{ |
1680 |
Monitor *mon = opaque; |
1681 |
|
1682 |
usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id, |
1683 |
product_name, speed); |
1684 |
return 0; |
1685 |
} |
1686 |
|
1687 |
static void dec2str(int val, char *str, size_t size) |
1688 |
{ |
1689 |
if (val == -1) |
1690 |
snprintf(str, size, "*");
|
1691 |
else
|
1692 |
snprintf(str, size, "%d", val);
|
1693 |
} |
1694 |
|
1695 |
static void hex2str(int val, char *str, size_t size) |
1696 |
{ |
1697 |
if (val == -1) |
1698 |
snprintf(str, size, "*");
|
1699 |
else
|
1700 |
snprintf(str, size, "%x", val);
|
1701 |
} |
1702 |
|
1703 |
void usb_host_info(Monitor *mon)
|
1704 |
{ |
1705 |
struct USBAutoFilter *f;
|
1706 |
|
1707 |
usb_host_scan(mon, usb_host_info_device); |
1708 |
|
1709 |
if (usb_auto_filter)
|
1710 |
monitor_printf(mon, " Auto filters:\n");
|
1711 |
for (f = usb_auto_filter; f; f = f->next) {
|
1712 |
char bus[10], addr[10], vid[10], pid[10]; |
1713 |
dec2str(f->bus_num, bus, sizeof(bus));
|
1714 |
dec2str(f->addr, addr, sizeof(addr));
|
1715 |
hex2str(f->vendor_id, vid, sizeof(vid));
|
1716 |
hex2str(f->product_id, pid, sizeof(pid));
|
1717 |
monitor_printf(mon, " Device %s.%s ID %s:%s\n",
|
1718 |
bus, addr, vid, pid); |
1719 |
} |
1720 |
} |