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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;
|
54 |
}; |
55 |
|
56 |
struct usb_ctrlrequest {
|
57 |
uint8_t bRequestType; |
58 |
uint8_t bRequest; |
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uint16_t wValue; |
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uint16_t wIndex; |
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uint16_t wLength; |
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}; |
63 |
|
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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
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71 |
|
72 |
#ifdef DEBUG
|
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#define dprintf printf
|
74 |
#else
|
75 |
#define dprintf(...)
|
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#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 |
|
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static char *usb_host_device_path; |
87 |
|
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#define USB_FS_NONE 0 |
89 |
#define USB_FS_PROC 1 |
90 |
#define USB_FS_DEV 2 |
91 |
#define USB_FS_SYS 3 |
92 |
|
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static int usb_fs_type; |
94 |
|
95 |
/* endpoint association data */
|
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struct endp_data {
|
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uint8_t type; |
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uint8_t halted; |
99 |
}; |
100 |
|
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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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* 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[1024];
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}; |
120 |
|
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typedef struct USBHostDevice { |
122 |
USBDevice dev; |
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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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|
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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 |
{ |
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s->endp_table[ep - 1].halted = 1; |
159 |
} |
160 |
|
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static USBHostDevice *hostdev_list;
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162 |
|
163 |
static void hostdev_link(USBHostDevice *dev) |
164 |
{ |
165 |
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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} |
179 |
|
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prev = &pdev->next; |
181 |
pdev = pdev->next; |
182 |
} |
183 |
} |
184 |
|
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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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191 |
s = s->next; |
192 |
} |
193 |
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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199 |
* 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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|
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USBPacket *packet; |
207 |
USBHostDevice *hdev; |
208 |
} AsyncURB; |
209 |
|
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static AsyncURB *async_alloc(void) |
211 |
{ |
212 |
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 |
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235 |
default:
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236 |
break;
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237 |
} |
238 |
} |
239 |
|
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static void async_complete(void *opaque) |
241 |
{ |
242 |
USBHostDevice *s = opaque; |
243 |
AsyncURB *aurb; |
244 |
|
245 |
while (1) { |
246 |
USBPacket *p; |
247 |
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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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return;
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252 |
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253 |
if (errno == ENODEV && !s->closing) {
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254 |
printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr);
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usb_device_del_addr(0, s->dev.addr);
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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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260 |
return;
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261 |
} |
262 |
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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) {
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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:
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280 |
p->len = USB_RET_NAK; |
281 |
break;
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282 |
} |
283 |
|
284 |
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 |
|
307 |
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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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
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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 |
|
556 |
/*
|
557 |
* Process certain standard device requests.
|
558 |
* These are infrequent and are processed synchronously.
|
559 |
*/
|
560 |
value = le16_to_cpu(s->ctrl.req.wValue); |
561 |
index = le16_to_cpu(s->ctrl.req.wIndex); |
562 |
|
563 |
dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
|
564 |
s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, |
565 |
s->ctrl.len); |
566 |
|
567 |
if (s->ctrl.req.bRequestType == 0) { |
568 |
switch (s->ctrl.req.bRequest) {
|
569 |
case USB_REQ_SET_ADDRESS:
|
570 |
return usb_host_set_address(s, value);
|
571 |
|
572 |
case USB_REQ_SET_CONFIGURATION:
|
573 |
return usb_host_set_config(s, value & 0xff); |
574 |
} |
575 |
} |
576 |
|
577 |
if (s->ctrl.req.bRequestType == 1 && |
578 |
s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) |
579 |
return usb_host_set_interface(s, index, value);
|
580 |
|
581 |
/* The rest are asynchronous */
|
582 |
|
583 |
aurb = async_alloc(); |
584 |
aurb->hdev = s; |
585 |
aurb->packet = p; |
586 |
|
587 |
/*
|
588 |
* Setup ctrl transfer.
|
589 |
*
|
590 |
* s->ctrl is layed out such that data buffer immediately follows
|
591 |
* 'req' struct which is exactly what usbdevfs expects.
|
592 |
*/
|
593 |
urb = &aurb->urb; |
594 |
|
595 |
urb->type = USBDEVFS_URB_TYPE_CONTROL; |
596 |
urb->endpoint = p->devep; |
597 |
|
598 |
urb->buffer = &s->ctrl.req; |
599 |
urb->buffer_length = 8 + s->ctrl.len;
|
600 |
|
601 |
urb->usercontext = s; |
602 |
|
603 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
604 |
|
605 |
dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
|
606 |
|
607 |
if (ret < 0) { |
608 |
dprintf("husb: submit failed. errno %d\n", errno);
|
609 |
async_free(aurb); |
610 |
|
611 |
switch(errno) {
|
612 |
case ETIMEDOUT:
|
613 |
return USB_RET_NAK;
|
614 |
case EPIPE:
|
615 |
default:
|
616 |
return USB_RET_STALL;
|
617 |
} |
618 |
} |
619 |
|
620 |
usb_defer_packet(p, async_cancel, aurb); |
621 |
return USB_RET_ASYNC;
|
622 |
} |
623 |
|
624 |
static int do_token_setup(USBDevice *dev, USBPacket *p) |
625 |
{ |
626 |
USBHostDevice *s = (USBHostDevice *) dev; |
627 |
int ret = 0; |
628 |
|
629 |
if (p->len != 8) |
630 |
return USB_RET_STALL;
|
631 |
|
632 |
memcpy(&s->ctrl.req, p->data, 8);
|
633 |
s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength); |
634 |
s->ctrl.offset = 0;
|
635 |
s->ctrl.state = CTRL_STATE_SETUP; |
636 |
|
637 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
638 |
ret = usb_host_handle_control(s, p); |
639 |
if (ret < 0) |
640 |
return ret;
|
641 |
|
642 |
if (ret < s->ctrl.len)
|
643 |
s->ctrl.len = ret; |
644 |
s->ctrl.state = CTRL_STATE_DATA; |
645 |
} else {
|
646 |
if (s->ctrl.len == 0) |
647 |
s->ctrl.state = CTRL_STATE_ACK; |
648 |
else
|
649 |
s->ctrl.state = CTRL_STATE_DATA; |
650 |
} |
651 |
|
652 |
return ret;
|
653 |
} |
654 |
|
655 |
static int do_token_in(USBDevice *dev, USBPacket *p) |
656 |
{ |
657 |
USBHostDevice *s = (USBHostDevice *) dev; |
658 |
int ret = 0; |
659 |
|
660 |
if (p->devep != 0) |
661 |
return usb_host_handle_data(s, p);
|
662 |
|
663 |
switch(s->ctrl.state) {
|
664 |
case CTRL_STATE_ACK:
|
665 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
666 |
ret = usb_host_handle_control(s, p); |
667 |
if (ret == USB_RET_ASYNC)
|
668 |
return USB_RET_ASYNC;
|
669 |
|
670 |
s->ctrl.state = CTRL_STATE_IDLE; |
671 |
return ret > 0 ? 0 : ret; |
672 |
} |
673 |
|
674 |
return 0; |
675 |
|
676 |
case CTRL_STATE_DATA:
|
677 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
678 |
int len = s->ctrl.len - s->ctrl.offset;
|
679 |
if (len > p->len)
|
680 |
len = p->len; |
681 |
memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len); |
682 |
s->ctrl.offset += len; |
683 |
if (s->ctrl.offset >= s->ctrl.len)
|
684 |
s->ctrl.state = CTRL_STATE_ACK; |
685 |
return len;
|
686 |
} |
687 |
|
688 |
s->ctrl.state = CTRL_STATE_IDLE; |
689 |
return USB_RET_STALL;
|
690 |
|
691 |
default:
|
692 |
return USB_RET_STALL;
|
693 |
} |
694 |
} |
695 |
|
696 |
static int do_token_out(USBDevice *dev, USBPacket *p) |
697 |
{ |
698 |
USBHostDevice *s = (USBHostDevice *) dev; |
699 |
|
700 |
if (p->devep != 0) |
701 |
return usb_host_handle_data(s, p);
|
702 |
|
703 |
switch(s->ctrl.state) {
|
704 |
case CTRL_STATE_ACK:
|
705 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
706 |
s->ctrl.state = CTRL_STATE_IDLE; |
707 |
/* transfer OK */
|
708 |
} else {
|
709 |
/* ignore additional output */
|
710 |
} |
711 |
return 0; |
712 |
|
713 |
case CTRL_STATE_DATA:
|
714 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
715 |
int len = s->ctrl.len - s->ctrl.offset;
|
716 |
if (len > p->len)
|
717 |
len = p->len; |
718 |
memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len); |
719 |
s->ctrl.offset += len; |
720 |
if (s->ctrl.offset >= s->ctrl.len)
|
721 |
s->ctrl.state = CTRL_STATE_ACK; |
722 |
return len;
|
723 |
} |
724 |
|
725 |
s->ctrl.state = CTRL_STATE_IDLE; |
726 |
return USB_RET_STALL;
|
727 |
|
728 |
default:
|
729 |
return USB_RET_STALL;
|
730 |
} |
731 |
} |
732 |
|
733 |
/*
|
734 |
* Packet handler.
|
735 |
* Called by the HC (host controller).
|
736 |
*
|
737 |
* Returns length of the transaction or one of the USB_RET_XXX codes.
|
738 |
*/
|
739 |
static int usb_host_handle_packet(USBDevice *s, USBPacket *p) |
740 |
{ |
741 |
switch(p->pid) {
|
742 |
case USB_MSG_ATTACH:
|
743 |
s->state = USB_STATE_ATTACHED; |
744 |
return 0; |
745 |
|
746 |
case USB_MSG_DETACH:
|
747 |
s->state = USB_STATE_NOTATTACHED; |
748 |
return 0; |
749 |
|
750 |
case USB_MSG_RESET:
|
751 |
s->remote_wakeup = 0;
|
752 |
s->addr = 0;
|
753 |
s->state = USB_STATE_DEFAULT; |
754 |
s->handle_reset(s); |
755 |
return 0; |
756 |
} |
757 |
|
758 |
/* Rest of the PIDs must match our address */
|
759 |
if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
|
760 |
return USB_RET_NODEV;
|
761 |
|
762 |
switch (p->pid) {
|
763 |
case USB_TOKEN_SETUP:
|
764 |
return do_token_setup(s, p);
|
765 |
|
766 |
case USB_TOKEN_IN:
|
767 |
return do_token_in(s, p);
|
768 |
|
769 |
case USB_TOKEN_OUT:
|
770 |
return do_token_out(s, p);
|
771 |
|
772 |
default:
|
773 |
return USB_RET_STALL;
|
774 |
} |
775 |
} |
776 |
|
777 |
/* returns 1 on problem encountered or 0 for success */
|
778 |
static int usb_linux_update_endp_table(USBHostDevice *s) |
779 |
{ |
780 |
uint8_t *descriptors; |
781 |
uint8_t devep, type, configuration, alt_interface; |
782 |
struct usb_ctrltransfer ct;
|
783 |
int interface, ret, length, i;
|
784 |
|
785 |
ct.bRequestType = USB_DIR_IN; |
786 |
ct.bRequest = USB_REQ_GET_CONFIGURATION; |
787 |
ct.wValue = 0;
|
788 |
ct.wIndex = 0;
|
789 |
ct.wLength = 1;
|
790 |
ct.data = &configuration; |
791 |
ct.timeout = 50;
|
792 |
|
793 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
794 |
if (ret < 0) { |
795 |
perror("usb_linux_update_endp_table");
|
796 |
return 1; |
797 |
} |
798 |
|
799 |
/* in address state */
|
800 |
if (configuration == 0) |
801 |
return 1; |
802 |
|
803 |
/* get the desired configuration, interface, and endpoint descriptors
|
804 |
* from device description */
|
805 |
descriptors = &s->descr[18];
|
806 |
length = s->descr_len - 18;
|
807 |
i = 0;
|
808 |
|
809 |
if (descriptors[i + 1] != USB_DT_CONFIG || |
810 |
descriptors[i + 5] != configuration) {
|
811 |
dprintf("invalid descriptor data - configuration\n");
|
812 |
return 1; |
813 |
} |
814 |
i += descriptors[i]; |
815 |
|
816 |
while (i < length) {
|
817 |
if (descriptors[i + 1] != USB_DT_INTERFACE || |
818 |
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
819 |
descriptors[i + 4] == 0)) { |
820 |
i += descriptors[i]; |
821 |
continue;
|
822 |
} |
823 |
|
824 |
interface = descriptors[i + 2];
|
825 |
|
826 |
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
827 |
ct.bRequest = USB_REQ_GET_INTERFACE; |
828 |
ct.wValue = 0;
|
829 |
ct.wIndex = interface; |
830 |
ct.wLength = 1;
|
831 |
ct.data = &alt_interface; |
832 |
ct.timeout = 50;
|
833 |
|
834 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
835 |
if (ret < 0) { |
836 |
alt_interface = interface; |
837 |
} |
838 |
|
839 |
/* the current interface descriptor is the active interface
|
840 |
* and has endpoints */
|
841 |
if (descriptors[i + 3] != alt_interface) { |
842 |
i += descriptors[i]; |
843 |
continue;
|
844 |
} |
845 |
|
846 |
/* advance to the endpoints */
|
847 |
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) |
848 |
i += descriptors[i]; |
849 |
|
850 |
if (i >= length)
|
851 |
break;
|
852 |
|
853 |
while (i < length) {
|
854 |
if (descriptors[i + 1] != USB_DT_ENDPOINT) |
855 |
break;
|
856 |
|
857 |
devep = descriptors[i + 2];
|
858 |
switch (descriptors[i + 3] & 0x3) { |
859 |
case 0x00: |
860 |
type = USBDEVFS_URB_TYPE_CONTROL; |
861 |
break;
|
862 |
case 0x01: |
863 |
type = USBDEVFS_URB_TYPE_ISO; |
864 |
break;
|
865 |
case 0x02: |
866 |
type = USBDEVFS_URB_TYPE_BULK; |
867 |
break;
|
868 |
case 0x03: |
869 |
type = USBDEVFS_URB_TYPE_INTERRUPT; |
870 |
break;
|
871 |
default:
|
872 |
dprintf("usb_host: malformed endpoint type\n");
|
873 |
type = USBDEVFS_URB_TYPE_BULK; |
874 |
} |
875 |
s->endp_table[(devep & 0xf) - 1].type = type; |
876 |
s->endp_table[(devep & 0xf) - 1].halted = 0; |
877 |
|
878 |
i += descriptors[i]; |
879 |
} |
880 |
} |
881 |
return 0; |
882 |
} |
883 |
|
884 |
static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name) |
885 |
{ |
886 |
int fd = -1, ret; |
887 |
USBHostDevice *dev = NULL;
|
888 |
struct usbdevfs_connectinfo ci;
|
889 |
char buf[1024]; |
890 |
|
891 |
dev = qemu_mallocz(sizeof(USBHostDevice));
|
892 |
|
893 |
dev->bus_num = bus_num; |
894 |
dev->addr = addr; |
895 |
|
896 |
printf("husb: open device %d.%d\n", bus_num, addr);
|
897 |
|
898 |
if (!usb_host_device_path) {
|
899 |
perror("husb: USB Host Device Path not set");
|
900 |
goto fail;
|
901 |
} |
902 |
snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, |
903 |
bus_num, addr); |
904 |
fd = open(buf, O_RDWR | O_NONBLOCK); |
905 |
if (fd < 0) { |
906 |
perror(buf); |
907 |
goto fail;
|
908 |
} |
909 |
dprintf("husb: opened %s\n", buf);
|
910 |
|
911 |
/* read the device description */
|
912 |
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
913 |
if (dev->descr_len <= 0) { |
914 |
perror("husb: reading device data failed");
|
915 |
goto fail;
|
916 |
} |
917 |
|
918 |
#ifdef DEBUG
|
919 |
{ |
920 |
int x;
|
921 |
printf("=== begin dumping device descriptor data ===\n");
|
922 |
for (x = 0; x < dev->descr_len; x++) |
923 |
printf("%02x ", dev->descr[x]);
|
924 |
printf("\n=== end dumping device descriptor data ===\n");
|
925 |
} |
926 |
#endif
|
927 |
|
928 |
dev->fd = fd; |
929 |
|
930 |
/*
|
931 |
* Initial configuration is -1 which makes us claim first
|
932 |
* available config. We used to start with 1, which does not
|
933 |
* always work. I've seen devices where first config starts
|
934 |
* with 2.
|
935 |
*/
|
936 |
if (!usb_host_claim_interfaces(dev, -1)) |
937 |
goto fail;
|
938 |
|
939 |
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
940 |
if (ret < 0) { |
941 |
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
942 |
goto fail;
|
943 |
} |
944 |
|
945 |
printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
|
946 |
|
947 |
ret = usb_linux_update_endp_table(dev); |
948 |
if (ret)
|
949 |
goto fail;
|
950 |
|
951 |
if (ci.slow)
|
952 |
dev->dev.speed = USB_SPEED_LOW; |
953 |
else
|
954 |
dev->dev.speed = USB_SPEED_HIGH; |
955 |
|
956 |
dev->dev.handle_packet = usb_host_handle_packet; |
957 |
dev->dev.handle_reset = usb_host_handle_reset; |
958 |
dev->dev.handle_destroy = usb_host_handle_destroy; |
959 |
|
960 |
if (!prod_name || prod_name[0] == '\0') |
961 |
snprintf(dev->dev.devname, sizeof(dev->dev.devname),
|
962 |
"host:%d.%d", bus_num, addr);
|
963 |
else
|
964 |
pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
|
965 |
prod_name); |
966 |
|
967 |
/* USB devio uses 'write' flag to check for async completions */
|
968 |
qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
|
969 |
|
970 |
hostdev_link(dev); |
971 |
|
972 |
return (USBDevice *) dev;
|
973 |
|
974 |
fail:
|
975 |
if (dev)
|
976 |
qemu_free(dev); |
977 |
|
978 |
close(fd); |
979 |
return NULL; |
980 |
} |
981 |
|
982 |
static int usb_host_auto_add(const char *spec); |
983 |
static int usb_host_auto_del(const char *spec); |
984 |
|
985 |
USBDevice *usb_host_device_open(const char *devname) |
986 |
{ |
987 |
Monitor *mon = cur_mon; |
988 |
int bus_num, addr;
|
989 |
char product_name[PRODUCT_NAME_SZ];
|
990 |
|
991 |
if (strstr(devname, "auto:")) { |
992 |
usb_host_auto_add(devname); |
993 |
return NULL; |
994 |
} |
995 |
|
996 |
if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), |
997 |
devname) < 0)
|
998 |
return NULL; |
999 |
|
1000 |
if (hostdev_find(bus_num, addr)) {
|
1001 |
monitor_printf(mon, "husb: host usb device %d.%d is already open\n",
|
1002 |
bus_num, addr); |
1003 |
return NULL; |
1004 |
} |
1005 |
|
1006 |
return usb_host_device_open_addr(bus_num, addr, product_name);
|
1007 |
} |
1008 |
|
1009 |
int usb_host_device_close(const char *devname) |
1010 |
{ |
1011 |
char product_name[PRODUCT_NAME_SZ];
|
1012 |
int bus_num, addr;
|
1013 |
USBHostDevice *s; |
1014 |
|
1015 |
if (strstr(devname, "auto:")) |
1016 |
return usb_host_auto_del(devname);
|
1017 |
|
1018 |
if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), |
1019 |
devname) < 0)
|
1020 |
return -1; |
1021 |
|
1022 |
s = hostdev_find(bus_num, addr); |
1023 |
if (s) {
|
1024 |
usb_device_del_addr(0, s->dev.addr);
|
1025 |
return 0; |
1026 |
} |
1027 |
|
1028 |
return -1; |
1029 |
} |
1030 |
|
1031 |
static int get_tag_value(char *buf, int buf_size, |
1032 |
const char *str, const char *tag, |
1033 |
const char *stopchars) |
1034 |
{ |
1035 |
const char *p; |
1036 |
char *q;
|
1037 |
p = strstr(str, tag); |
1038 |
if (!p)
|
1039 |
return -1; |
1040 |
p += strlen(tag); |
1041 |
while (qemu_isspace(*p))
|
1042 |
p++; |
1043 |
q = buf; |
1044 |
while (*p != '\0' && !strchr(stopchars, *p)) { |
1045 |
if ((q - buf) < (buf_size - 1)) |
1046 |
*q++ = *p; |
1047 |
p++; |
1048 |
} |
1049 |
*q = '\0';
|
1050 |
return q - buf;
|
1051 |
} |
1052 |
|
1053 |
/*
|
1054 |
* Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
|
1055 |
* host's USB devices. This is legacy support since many distributions
|
1056 |
* are moving to /sys/bus/usb
|
1057 |
*/
|
1058 |
static int usb_host_scan_dev(void *opaque, USBScanFunc *func) |
1059 |
{ |
1060 |
FILE *f = 0;
|
1061 |
char line[1024]; |
1062 |
char buf[1024]; |
1063 |
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
|
1064 |
char product_name[512]; |
1065 |
int ret = 0; |
1066 |
|
1067 |
if (!usb_host_device_path) {
|
1068 |
perror("husb: USB Host Device Path not set");
|
1069 |
goto the_end;
|
1070 |
} |
1071 |
snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); |
1072 |
f = fopen(line, "r");
|
1073 |
if (!f) {
|
1074 |
perror("husb: cannot open devices file");
|
1075 |
goto the_end;
|
1076 |
} |
1077 |
|
1078 |
device_count = 0;
|
1079 |
bus_num = addr = speed = class_id = product_id = vendor_id = 0;
|
1080 |
for(;;) {
|
1081 |
if (fgets(line, sizeof(line), f) == NULL) |
1082 |
break;
|
1083 |
if (strlen(line) > 0) |
1084 |
line[strlen(line) - 1] = '\0'; |
1085 |
if (line[0] == 'T' && line[1] == ':') { |
1086 |
if (device_count && (vendor_id || product_id)) {
|
1087 |
/* New device. Add the previously discovered device. */
|
1088 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1089 |
product_id, product_name, speed); |
1090 |
if (ret)
|
1091 |
goto the_end;
|
1092 |
} |
1093 |
if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) |
1094 |
goto fail;
|
1095 |
bus_num = atoi(buf); |
1096 |
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) |
1097 |
goto fail;
|
1098 |
addr = atoi(buf); |
1099 |
if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) |
1100 |
goto fail;
|
1101 |
if (!strcmp(buf, "480")) |
1102 |
speed = USB_SPEED_HIGH; |
1103 |
else if (!strcmp(buf, "1.5")) |
1104 |
speed = USB_SPEED_LOW; |
1105 |
else
|
1106 |
speed = USB_SPEED_FULL; |
1107 |
product_name[0] = '\0'; |
1108 |
class_id = 0xff;
|
1109 |
device_count++; |
1110 |
product_id = 0;
|
1111 |
vendor_id = 0;
|
1112 |
} else if (line[0] == 'P' && line[1] == ':') { |
1113 |
if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) |
1114 |
goto fail;
|
1115 |
vendor_id = strtoul(buf, NULL, 16); |
1116 |
if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) |
1117 |
goto fail;
|
1118 |
product_id = strtoul(buf, NULL, 16); |
1119 |
} else if (line[0] == 'S' && line[1] == ':') { |
1120 |
if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) |
1121 |
goto fail;
|
1122 |
pstrcpy(product_name, sizeof(product_name), buf);
|
1123 |
} else if (line[0] == 'D' && line[1] == ':') { |
1124 |
if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) |
1125 |
goto fail;
|
1126 |
class_id = strtoul(buf, NULL, 16); |
1127 |
} |
1128 |
fail: ;
|
1129 |
} |
1130 |
if (device_count && (vendor_id || product_id)) {
|
1131 |
/* Add the last device. */
|
1132 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1133 |
product_id, product_name, speed); |
1134 |
} |
1135 |
the_end:
|
1136 |
if (f)
|
1137 |
fclose(f); |
1138 |
return ret;
|
1139 |
} |
1140 |
|
1141 |
/*
|
1142 |
* Read sys file-system device file
|
1143 |
*
|
1144 |
* @line address of buffer to put file contents in
|
1145 |
* @line_size size of line
|
1146 |
* @device_file path to device file (printf format string)
|
1147 |
* @device_name device being opened (inserted into device_file)
|
1148 |
*
|
1149 |
* @return 0 failed, 1 succeeded ('line' contains data)
|
1150 |
*/
|
1151 |
static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name) |
1152 |
{ |
1153 |
Monitor *mon = cur_mon; |
1154 |
FILE *f; |
1155 |
int ret = 0; |
1156 |
char filename[PATH_MAX];
|
1157 |
|
1158 |
snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
|
1159 |
device_file); |
1160 |
f = fopen(filename, "r");
|
1161 |
if (f) {
|
1162 |
fgets(line, line_size, f); |
1163 |
fclose(f); |
1164 |
ret = 1;
|
1165 |
} else {
|
1166 |
monitor_printf(mon, "husb: could not open %s\n", filename);
|
1167 |
} |
1168 |
|
1169 |
return ret;
|
1170 |
} |
1171 |
|
1172 |
/*
|
1173 |
* Use /sys/bus/usb/devices/ directory to determine host's USB
|
1174 |
* devices.
|
1175 |
*
|
1176 |
* This code is based on Robert Schiele's original patches posted to
|
1177 |
* the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
|
1178 |
*/
|
1179 |
static int usb_host_scan_sys(void *opaque, USBScanFunc *func) |
1180 |
{ |
1181 |
DIR *dir = 0;
|
1182 |
char line[1024]; |
1183 |
int bus_num, addr, speed, class_id, product_id, vendor_id;
|
1184 |
int ret = 0; |
1185 |
char product_name[512]; |
1186 |
struct dirent *de;
|
1187 |
|
1188 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
1189 |
if (!dir) {
|
1190 |
perror("husb: cannot open devices directory");
|
1191 |
goto the_end;
|
1192 |
} |
1193 |
|
1194 |
while ((de = readdir(dir))) {
|
1195 |
if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { |
1196 |
char *tmpstr = de->d_name;
|
1197 |
if (!strncmp(de->d_name, "usb", 3)) |
1198 |
tmpstr += 3;
|
1199 |
bus_num = atoi(tmpstr); |
1200 |
|
1201 |
if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) |
1202 |
goto the_end;
|
1203 |
if (sscanf(line, "%d", &addr) != 1) |
1204 |
goto the_end;
|
1205 |
|
1206 |
if (!usb_host_read_file(line, sizeof(line), "bDeviceClass", |
1207 |
de->d_name)) |
1208 |
goto the_end;
|
1209 |
if (sscanf(line, "%x", &class_id) != 1) |
1210 |
goto the_end;
|
1211 |
|
1212 |
if (!usb_host_read_file(line, sizeof(line), "idVendor", de->d_name)) |
1213 |
goto the_end;
|
1214 |
if (sscanf(line, "%x", &vendor_id) != 1) |
1215 |
goto the_end;
|
1216 |
|
1217 |
if (!usb_host_read_file(line, sizeof(line), "idProduct", |
1218 |
de->d_name)) |
1219 |
goto the_end;
|
1220 |
if (sscanf(line, "%x", &product_id) != 1) |
1221 |
goto the_end;
|
1222 |
|
1223 |
if (!usb_host_read_file(line, sizeof(line), "product", |
1224 |
de->d_name)) { |
1225 |
*product_name = 0;
|
1226 |
} else {
|
1227 |
if (strlen(line) > 0) |
1228 |
line[strlen(line) - 1] = '\0'; |
1229 |
pstrcpy(product_name, sizeof(product_name), line);
|
1230 |
} |
1231 |
|
1232 |
if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) |
1233 |
goto the_end;
|
1234 |
if (!strcmp(line, "480\n")) |
1235 |
speed = USB_SPEED_HIGH; |
1236 |
else if (!strcmp(line, "1.5\n")) |
1237 |
speed = USB_SPEED_LOW; |
1238 |
else
|
1239 |
speed = USB_SPEED_FULL; |
1240 |
|
1241 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
1242 |
product_id, product_name, speed); |
1243 |
if (ret)
|
1244 |
goto the_end;
|
1245 |
} |
1246 |
} |
1247 |
the_end:
|
1248 |
if (dir)
|
1249 |
closedir(dir); |
1250 |
return ret;
|
1251 |
} |
1252 |
|
1253 |
/*
|
1254 |
* Determine how to access the host's USB devices and call the
|
1255 |
* specific support function.
|
1256 |
*/
|
1257 |
static int usb_host_scan(void *opaque, USBScanFunc *func) |
1258 |
{ |
1259 |
Monitor *mon = cur_mon; |
1260 |
FILE *f = 0;
|
1261 |
DIR *dir = 0;
|
1262 |
int ret = 0; |
1263 |
const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; |
1264 |
char devpath[PATH_MAX];
|
1265 |
|
1266 |
/* only check the host once */
|
1267 |
if (!usb_fs_type) {
|
1268 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
1269 |
if (dir) {
|
1270 |
/* devices found in /dev/bus/usb/ (yes - not a mistake!) */
|
1271 |
strcpy(devpath, USBDEVBUS_PATH); |
1272 |
usb_fs_type = USB_FS_SYS; |
1273 |
closedir(dir); |
1274 |
dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH); |
1275 |
goto found_devices;
|
1276 |
} |
1277 |
f = fopen(USBPROCBUS_PATH "/devices", "r"); |
1278 |
if (f) {
|
1279 |
/* devices found in /proc/bus/usb/ */
|
1280 |
strcpy(devpath, USBPROCBUS_PATH); |
1281 |
usb_fs_type = USB_FS_PROC; |
1282 |
fclose(f); |
1283 |
dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH); |
1284 |
goto found_devices;
|
1285 |
} |
1286 |
/* try additional methods if an access method hasn't been found yet */
|
1287 |
f = fopen(USBDEVBUS_PATH "/devices", "r"); |
1288 |
if (f) {
|
1289 |
/* devices found in /dev/bus/usb/ */
|
1290 |
strcpy(devpath, USBDEVBUS_PATH); |
1291 |
usb_fs_type = USB_FS_DEV; |
1292 |
fclose(f); |
1293 |
dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH); |
1294 |
goto found_devices;
|
1295 |
} |
1296 |
found_devices:
|
1297 |
if (!usb_fs_type) {
|
1298 |
monitor_printf(mon, "husb: unable to access USB devices\n");
|
1299 |
return -ENOENT;
|
1300 |
} |
1301 |
|
1302 |
/* the module setting (used later for opening devices) */
|
1303 |
usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
|
1304 |
strcpy(usb_host_device_path, devpath); |
1305 |
monitor_printf(mon, "husb: using %s file-system with %s\n",
|
1306 |
fs_type[usb_fs_type], usb_host_device_path); |
1307 |
} |
1308 |
|
1309 |
switch (usb_fs_type) {
|
1310 |
case USB_FS_PROC:
|
1311 |
case USB_FS_DEV:
|
1312 |
ret = usb_host_scan_dev(opaque, func); |
1313 |
break;
|
1314 |
case USB_FS_SYS:
|
1315 |
ret = usb_host_scan_sys(opaque, func); |
1316 |
break;
|
1317 |
default:
|
1318 |
ret = -EINVAL; |
1319 |
break;
|
1320 |
} |
1321 |
return ret;
|
1322 |
} |
1323 |
|
1324 |
struct USBAutoFilter {
|
1325 |
struct USBAutoFilter *next;
|
1326 |
int bus_num;
|
1327 |
int addr;
|
1328 |
int vendor_id;
|
1329 |
int product_id;
|
1330 |
}; |
1331 |
|
1332 |
static QEMUTimer *usb_auto_timer;
|
1333 |
static struct USBAutoFilter *usb_auto_filter; |
1334 |
|
1335 |
static int usb_host_auto_scan(void *opaque, int bus_num, int addr, |
1336 |
int class_id, int vendor_id, int product_id, |
1337 |
const char *product_name, int speed) |
1338 |
{ |
1339 |
struct USBAutoFilter *f;
|
1340 |
struct USBDevice *dev;
|
1341 |
|
1342 |
/* Ignore hubs */
|
1343 |
if (class_id == 9) |
1344 |
return 0; |
1345 |
|
1346 |
for (f = usb_auto_filter; f; f = f->next) {
|
1347 |
if (f->bus_num >= 0 && f->bus_num != bus_num) |
1348 |
continue;
|
1349 |
|
1350 |
if (f->addr >= 0 && f->addr != addr) |
1351 |
continue;
|
1352 |
|
1353 |
if (f->vendor_id >= 0 && f->vendor_id != vendor_id) |
1354 |
continue;
|
1355 |
|
1356 |
if (f->product_id >= 0 && f->product_id != product_id) |
1357 |
continue;
|
1358 |
|
1359 |
/* We got a match */
|
1360 |
|
1361 |
/* Allredy attached ? */
|
1362 |
if (hostdev_find(bus_num, addr))
|
1363 |
return 0; |
1364 |
|
1365 |
dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
|
1366 |
|
1367 |
dev = usb_host_device_open_addr(bus_num, addr, product_name); |
1368 |
if (dev)
|
1369 |
usb_device_add_dev(dev); |
1370 |
} |
1371 |
|
1372 |
return 0; |
1373 |
} |
1374 |
|
1375 |
static void usb_host_auto_timer(void *unused) |
1376 |
{ |
1377 |
usb_host_scan(NULL, usb_host_auto_scan);
|
1378 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
1379 |
} |
1380 |
|
1381 |
/*
|
1382 |
* Autoconnect filter
|
1383 |
* Format:
|
1384 |
* auto:bus:dev[:vid:pid]
|
1385 |
* auto:bus.dev[:vid:pid]
|
1386 |
*
|
1387 |
* bus - bus number (dec, * means any)
|
1388 |
* dev - device number (dec, * means any)
|
1389 |
* vid - vendor id (hex, * means any)
|
1390 |
* pid - product id (hex, * means any)
|
1391 |
*
|
1392 |
* See 'lsusb' output.
|
1393 |
*/
|
1394 |
static int parse_filter(const char *spec, struct USBAutoFilter *f) |
1395 |
{ |
1396 |
enum { BUS, DEV, VID, PID, DONE };
|
1397 |
const char *p = spec; |
1398 |
int i;
|
1399 |
|
1400 |
f->bus_num = -1;
|
1401 |
f->addr = -1;
|
1402 |
f->vendor_id = -1;
|
1403 |
f->product_id = -1;
|
1404 |
|
1405 |
for (i = BUS; i < DONE; i++) {
|
1406 |
p = strpbrk(p, ":.");
|
1407 |
if (!p) break; |
1408 |
p++; |
1409 |
|
1410 |
if (*p == '*') |
1411 |
continue;
|
1412 |
|
1413 |
switch(i) {
|
1414 |
case BUS: f->bus_num = strtol(p, NULL, 10); break; |
1415 |
case DEV: f->addr = strtol(p, NULL, 10); break; |
1416 |
case VID: f->vendor_id = strtol(p, NULL, 16); break; |
1417 |
case PID: f->product_id = strtol(p, NULL, 16); break; |
1418 |
} |
1419 |
} |
1420 |
|
1421 |
if (i < DEV) {
|
1422 |
fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
|
1423 |
return -1; |
1424 |
} |
1425 |
|
1426 |
return 0; |
1427 |
} |
1428 |
|
1429 |
static int match_filter(const struct USBAutoFilter *f1, |
1430 |
const struct USBAutoFilter *f2) |
1431 |
{ |
1432 |
return f1->bus_num == f2->bus_num &&
|
1433 |
f1->addr == f2->addr && |
1434 |
f1->vendor_id == f2->vendor_id && |
1435 |
f1->product_id == f2->product_id; |
1436 |
} |
1437 |
|
1438 |
static int usb_host_auto_add(const char *spec) |
1439 |
{ |
1440 |
struct USBAutoFilter filter, *f;
|
1441 |
|
1442 |
if (parse_filter(spec, &filter) < 0) |
1443 |
return -1; |
1444 |
|
1445 |
f = qemu_mallocz(sizeof(*f));
|
1446 |
|
1447 |
*f = filter; |
1448 |
|
1449 |
if (!usb_auto_filter) {
|
1450 |
/*
|
1451 |
* First entry. Init and start the monitor.
|
1452 |
* Right now we're using timer to check for new devices.
|
1453 |
* If this turns out to be too expensive we can move that into a
|
1454 |
* separate thread.
|
1455 |
*/
|
1456 |
usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL);
|
1457 |
if (!usb_auto_timer) {
|
1458 |
fprintf(stderr, "husb: failed to allocate auto scan timer\n");
|
1459 |
qemu_free(f); |
1460 |
return -1; |
1461 |
} |
1462 |
|
1463 |
/* Check for new devices every two seconds */
|
1464 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
1465 |
} |
1466 |
|
1467 |
dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n",
|
1468 |
f->bus_num, f->addr, f->vendor_id, f->product_id); |
1469 |
|
1470 |
f->next = usb_auto_filter; |
1471 |
usb_auto_filter = f; |
1472 |
|
1473 |
return 0; |
1474 |
} |
1475 |
|
1476 |
static int usb_host_auto_del(const char *spec) |
1477 |
{ |
1478 |
struct USBAutoFilter *pf = usb_auto_filter;
|
1479 |
struct USBAutoFilter **prev = &usb_auto_filter;
|
1480 |
struct USBAutoFilter filter;
|
1481 |
|
1482 |
if (parse_filter(spec, &filter) < 0) |
1483 |
return -1; |
1484 |
|
1485 |
while (pf) {
|
1486 |
if (match_filter(pf, &filter)) {
|
1487 |
dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n",
|
1488 |
pf->bus_num, pf->addr, pf->vendor_id, pf->product_id); |
1489 |
|
1490 |
*prev = pf->next; |
1491 |
|
1492 |
if (!usb_auto_filter) {
|
1493 |
/* No more filters. Stop scanning. */
|
1494 |
qemu_del_timer(usb_auto_timer); |
1495 |
qemu_free_timer(usb_auto_timer); |
1496 |
} |
1497 |
|
1498 |
return 0; |
1499 |
} |
1500 |
|
1501 |
prev = &pf->next; |
1502 |
pf = pf->next; |
1503 |
} |
1504 |
|
1505 |
return -1; |
1506 |
} |
1507 |
|
1508 |
typedef struct FindDeviceState { |
1509 |
int vendor_id;
|
1510 |
int product_id;
|
1511 |
int bus_num;
|
1512 |
int addr;
|
1513 |
char product_name[PRODUCT_NAME_SZ];
|
1514 |
} FindDeviceState; |
1515 |
|
1516 |
static int usb_host_find_device_scan(void *opaque, int bus_num, int addr, |
1517 |
int class_id,
|
1518 |
int vendor_id, int product_id, |
1519 |
const char *product_name, int speed) |
1520 |
{ |
1521 |
FindDeviceState *s = opaque; |
1522 |
if ((vendor_id == s->vendor_id &&
|
1523 |
product_id == s->product_id) || |
1524 |
(bus_num == s->bus_num && |
1525 |
addr == s->addr)) { |
1526 |
pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name); |
1527 |
s->bus_num = bus_num; |
1528 |
s->addr = addr; |
1529 |
return 1; |
1530 |
} else {
|
1531 |
return 0; |
1532 |
} |
1533 |
} |
1534 |
|
1535 |
/* the syntax is :
|
1536 |
'bus.addr' (decimal numbers) or
|
1537 |
'vendor_id:product_id' (hexa numbers) */
|
1538 |
static int usb_host_find_device(int *pbus_num, int *paddr, |
1539 |
char *product_name, int product_name_size, |
1540 |
const char *devname) |
1541 |
{ |
1542 |
const char *p; |
1543 |
int ret;
|
1544 |
FindDeviceState fs; |
1545 |
|
1546 |
p = strchr(devname, '.');
|
1547 |
if (p) {
|
1548 |
*pbus_num = strtoul(devname, NULL, 0); |
1549 |
*paddr = strtoul(p + 1, NULL, 0); |
1550 |
fs.bus_num = *pbus_num; |
1551 |
fs.addr = *paddr; |
1552 |
ret = usb_host_scan(&fs, usb_host_find_device_scan); |
1553 |
if (ret)
|
1554 |
pstrcpy(product_name, product_name_size, fs.product_name); |
1555 |
return 0; |
1556 |
} |
1557 |
|
1558 |
p = strchr(devname, ':');
|
1559 |
if (p) {
|
1560 |
fs.vendor_id = strtoul(devname, NULL, 16); |
1561 |
fs.product_id = strtoul(p + 1, NULL, 16); |
1562 |
ret = usb_host_scan(&fs, usb_host_find_device_scan); |
1563 |
if (ret) {
|
1564 |
*pbus_num = fs.bus_num; |
1565 |
*paddr = fs.addr; |
1566 |
pstrcpy(product_name, product_name_size, fs.product_name); |
1567 |
return 0; |
1568 |
} |
1569 |
} |
1570 |
return -1; |
1571 |
} |
1572 |
|
1573 |
/**********************/
|
1574 |
/* USB host device info */
|
1575 |
|
1576 |
struct usb_class_info {
|
1577 |
int class;
|
1578 |
const char *class_name; |
1579 |
}; |
1580 |
|
1581 |
static const struct usb_class_info usb_class_info[] = { |
1582 |
{ USB_CLASS_AUDIO, "Audio"},
|
1583 |
{ USB_CLASS_COMM, "Communication"},
|
1584 |
{ USB_CLASS_HID, "HID"},
|
1585 |
{ USB_CLASS_HUB, "Hub" },
|
1586 |
{ USB_CLASS_PHYSICAL, "Physical" },
|
1587 |
{ USB_CLASS_PRINTER, "Printer" },
|
1588 |
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
1589 |
{ USB_CLASS_CDC_DATA, "Data" },
|
1590 |
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
1591 |
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
1592 |
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
1593 |
{ USB_CLASS_CSCID, "Smart Card" },
|
1594 |
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
1595 |
{ -1, NULL } |
1596 |
}; |
1597 |
|
1598 |
static const char *usb_class_str(uint8_t class) |
1599 |
{ |
1600 |
const struct usb_class_info *p; |
1601 |
for(p = usb_class_info; p->class != -1; p++) { |
1602 |
if (p->class == class)
|
1603 |
break;
|
1604 |
} |
1605 |
return p->class_name;
|
1606 |
} |
1607 |
|
1608 |
static void usb_info_device(int bus_num, int addr, int class_id, |
1609 |
int vendor_id, int product_id, |
1610 |
const char *product_name, |
1611 |
int speed)
|
1612 |
{ |
1613 |
Monitor *mon = cur_mon; |
1614 |
const char *class_str, *speed_str; |
1615 |
|
1616 |
switch(speed) {
|
1617 |
case USB_SPEED_LOW:
|
1618 |
speed_str = "1.5";
|
1619 |
break;
|
1620 |
case USB_SPEED_FULL:
|
1621 |
speed_str = "12";
|
1622 |
break;
|
1623 |
case USB_SPEED_HIGH:
|
1624 |
speed_str = "480";
|
1625 |
break;
|
1626 |
default:
|
1627 |
speed_str = "?";
|
1628 |
break;
|
1629 |
} |
1630 |
|
1631 |
monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n",
|
1632 |
bus_num, addr, speed_str); |
1633 |
class_str = usb_class_str(class_id); |
1634 |
if (class_str)
|
1635 |
monitor_printf(mon, " %s:", class_str);
|
1636 |
else
|
1637 |
monitor_printf(mon, " Class %02x:", class_id);
|
1638 |
monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
|
1639 |
if (product_name[0] != '\0') |
1640 |
monitor_printf(mon, ", %s", product_name);
|
1641 |
monitor_printf(mon, "\n");
|
1642 |
} |
1643 |
|
1644 |
static int usb_host_info_device(void *opaque, int bus_num, int addr, |
1645 |
int class_id,
|
1646 |
int vendor_id, int product_id, |
1647 |
const char *product_name, |
1648 |
int speed)
|
1649 |
{ |
1650 |
usb_info_device(bus_num, addr, class_id, vendor_id, product_id, |
1651 |
product_name, speed); |
1652 |
return 0; |
1653 |
} |
1654 |
|
1655 |
static void dec2str(int val, char *str, size_t size) |
1656 |
{ |
1657 |
if (val == -1) |
1658 |
snprintf(str, size, "*");
|
1659 |
else
|
1660 |
snprintf(str, size, "%d", val);
|
1661 |
} |
1662 |
|
1663 |
static void hex2str(int val, char *str, size_t size) |
1664 |
{ |
1665 |
if (val == -1) |
1666 |
snprintf(str, size, "*");
|
1667 |
else
|
1668 |
snprintf(str, size, "%x", val);
|
1669 |
} |
1670 |
|
1671 |
void usb_host_info(Monitor *mon)
|
1672 |
{ |
1673 |
struct USBAutoFilter *f;
|
1674 |
|
1675 |
usb_host_scan(NULL, usb_host_info_device);
|
1676 |
|
1677 |
if (usb_auto_filter)
|
1678 |
monitor_printf(mon, " Auto filters:\n");
|
1679 |
for (f = usb_auto_filter; f; f = f->next) {
|
1680 |
char bus[10], addr[10], vid[10], pid[10]; |
1681 |
dec2str(f->bus_num, bus, sizeof(bus));
|
1682 |
dec2str(f->addr, addr, sizeof(addr));
|
1683 |
hex2str(f->vendor_id, vid, sizeof(vid));
|
1684 |
hex2str(f->product_id, pid, sizeof(pid));
|
1685 |
monitor_printf(mon, " Device %s.%s ID %s:%s\n",
|
1686 |
bus, addr, vid, pid); |
1687 |
} |
1688 |
} |