root / hw / usb-bus.c @ d587e078
History | View | Annotate | Download (7.2 kB)
1 |
#include "hw.h" |
---|---|
2 |
#include "usb.h" |
3 |
#include "qdev.h" |
4 |
#include "sysemu.h" |
5 |
#include "monitor.h" |
6 |
|
7 |
static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent); |
8 |
|
9 |
static struct BusInfo usb_bus_info = { |
10 |
.name = "USB",
|
11 |
.size = sizeof(USBBus),
|
12 |
.print_dev = usb_bus_dev_print, |
13 |
}; |
14 |
static int next_usb_bus = 0; |
15 |
static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses);
|
16 |
|
17 |
void usb_bus_new(USBBus *bus, DeviceState *host)
|
18 |
{ |
19 |
qbus_create_inplace(&bus->qbus, &usb_bus_info, host, NULL);
|
20 |
bus->busnr = next_usb_bus++; |
21 |
bus->qbus.allow_hotplug = 1; /* Yes, we can */ |
22 |
QTAILQ_INIT(&bus->free); |
23 |
QTAILQ_INIT(&bus->used); |
24 |
QTAILQ_INSERT_TAIL(&busses, bus, next); |
25 |
} |
26 |
|
27 |
USBBus *usb_bus_find(int busnr)
|
28 |
{ |
29 |
USBBus *bus; |
30 |
|
31 |
if (-1 == busnr) |
32 |
return QTAILQ_FIRST(&busses);
|
33 |
QTAILQ_FOREACH(bus, &busses, next) { |
34 |
if (bus->busnr == busnr)
|
35 |
return bus;
|
36 |
} |
37 |
return NULL; |
38 |
} |
39 |
|
40 |
static int usb_qdev_init(DeviceState *qdev, DeviceInfo *base) |
41 |
{ |
42 |
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev); |
43 |
USBDeviceInfo *info = DO_UPCAST(USBDeviceInfo, qdev, base); |
44 |
int rc;
|
45 |
|
46 |
pstrcpy(dev->product_desc, sizeof(dev->product_desc), info->product_desc);
|
47 |
dev->info = info; |
48 |
dev->auto_attach = 1;
|
49 |
rc = dev->info->init(dev); |
50 |
if (rc == 0 && dev->auto_attach) |
51 |
usb_device_attach(dev); |
52 |
return rc;
|
53 |
} |
54 |
|
55 |
static int usb_qdev_exit(DeviceState *qdev) |
56 |
{ |
57 |
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev); |
58 |
|
59 |
usb_device_detach(dev); |
60 |
if (dev->info->handle_destroy) {
|
61 |
dev->info->handle_destroy(dev); |
62 |
} |
63 |
return 0; |
64 |
} |
65 |
|
66 |
void usb_qdev_register(USBDeviceInfo *info)
|
67 |
{ |
68 |
info->qdev.bus_info = &usb_bus_info; |
69 |
info->qdev.init = usb_qdev_init; |
70 |
info->qdev.unplug = qdev_simple_unplug_cb; |
71 |
info->qdev.exit = usb_qdev_exit; |
72 |
qdev_register(&info->qdev); |
73 |
} |
74 |
|
75 |
void usb_qdev_register_many(USBDeviceInfo *info)
|
76 |
{ |
77 |
while (info->qdev.name) {
|
78 |
usb_qdev_register(info); |
79 |
info++; |
80 |
} |
81 |
} |
82 |
|
83 |
USBDevice *usb_create(USBBus *bus, const char *name) |
84 |
{ |
85 |
DeviceState *dev; |
86 |
|
87 |
#if 1 |
88 |
/* temporary stopgap until all usb is properly qdev-ified */
|
89 |
if (!bus) {
|
90 |
bus = usb_bus_find(-1);
|
91 |
if (!bus)
|
92 |
return NULL; |
93 |
fprintf(stderr, "%s: no bus specified, using \"%s\" for \"%s\"\n",
|
94 |
__FUNCTION__, bus->qbus.name, name); |
95 |
} |
96 |
#endif
|
97 |
|
98 |
dev = qdev_create(&bus->qbus, name); |
99 |
return DO_UPCAST(USBDevice, qdev, dev);
|
100 |
} |
101 |
|
102 |
USBDevice *usb_create_simple(USBBus *bus, const char *name) |
103 |
{ |
104 |
USBDevice *dev = usb_create(bus, name); |
105 |
qdev_init_nofail(&dev->qdev); |
106 |
return dev;
|
107 |
} |
108 |
|
109 |
void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index, |
110 |
usb_attachfn attach) |
111 |
{ |
112 |
port->opaque = opaque; |
113 |
port->index = index; |
114 |
port->attach = attach; |
115 |
QTAILQ_INSERT_TAIL(&bus->free, port, next); |
116 |
bus->nfree++; |
117 |
} |
118 |
|
119 |
void usb_unregister_port(USBBus *bus, USBPort *port)
|
120 |
{ |
121 |
if (port->dev)
|
122 |
qdev_free(&port->dev->qdev); |
123 |
QTAILQ_REMOVE(&bus->free, port, next); |
124 |
bus->nfree--; |
125 |
} |
126 |
|
127 |
static void do_attach(USBDevice *dev) |
128 |
{ |
129 |
USBBus *bus = usb_bus_from_device(dev); |
130 |
USBPort *port; |
131 |
|
132 |
if (dev->attached) {
|
133 |
fprintf(stderr, "Warning: tried to attach usb device %s twice\n",
|
134 |
dev->product_desc); |
135 |
return;
|
136 |
} |
137 |
dev->attached++; |
138 |
|
139 |
port = QTAILQ_FIRST(&bus->free); |
140 |
QTAILQ_REMOVE(&bus->free, port, next); |
141 |
bus->nfree--; |
142 |
|
143 |
usb_attach(port, dev); |
144 |
|
145 |
QTAILQ_INSERT_TAIL(&bus->used, port, next); |
146 |
bus->nused++; |
147 |
} |
148 |
|
149 |
int usb_device_attach(USBDevice *dev)
|
150 |
{ |
151 |
USBBus *bus = usb_bus_from_device(dev); |
152 |
USBDevice *hub; |
153 |
|
154 |
if (bus->nfree == 1) { |
155 |
/* Create a new hub and chain it on. */
|
156 |
hub = usb_create_simple(bus, "usb-hub");
|
157 |
} |
158 |
do_attach(dev); |
159 |
return 0; |
160 |
} |
161 |
|
162 |
int usb_device_detach(USBDevice *dev)
|
163 |
{ |
164 |
USBBus *bus = usb_bus_from_device(dev); |
165 |
USBPort *port; |
166 |
|
167 |
if (!dev->attached) {
|
168 |
fprintf(stderr, "Warning: tried to detach unattached usb device %s\n",
|
169 |
dev->product_desc); |
170 |
return -1; |
171 |
} |
172 |
dev->attached--; |
173 |
|
174 |
QTAILQ_FOREACH(port, &bus->used, next) { |
175 |
if (port->dev == dev)
|
176 |
break;
|
177 |
} |
178 |
assert(port != NULL);
|
179 |
|
180 |
QTAILQ_REMOVE(&bus->used, port, next); |
181 |
bus->nused--; |
182 |
|
183 |
usb_attach(port, NULL);
|
184 |
|
185 |
QTAILQ_INSERT_TAIL(&bus->free, port, next); |
186 |
bus->nfree++; |
187 |
return 0; |
188 |
} |
189 |
|
190 |
int usb_device_delete_addr(int busnr, int addr) |
191 |
{ |
192 |
USBBus *bus; |
193 |
USBPort *port; |
194 |
USBDevice *dev; |
195 |
|
196 |
bus = usb_bus_find(busnr); |
197 |
if (!bus)
|
198 |
return -1; |
199 |
|
200 |
QTAILQ_FOREACH(port, &bus->used, next) { |
201 |
if (port->dev->addr == addr)
|
202 |
break;
|
203 |
} |
204 |
if (!port)
|
205 |
return -1; |
206 |
dev = port->dev; |
207 |
|
208 |
qdev_free(&dev->qdev); |
209 |
return 0; |
210 |
} |
211 |
|
212 |
static const char *usb_speed(unsigned int speed) |
213 |
{ |
214 |
static const char *txt[] = { |
215 |
[ USB_SPEED_LOW ] = "1.5",
|
216 |
[ USB_SPEED_FULL ] = "12",
|
217 |
[ USB_SPEED_HIGH ] = "480",
|
218 |
}; |
219 |
if (speed >= ARRAY_SIZE(txt))
|
220 |
return "?"; |
221 |
return txt[speed];
|
222 |
} |
223 |
|
224 |
static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent) |
225 |
{ |
226 |
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev); |
227 |
USBBus *bus = usb_bus_from_device(dev); |
228 |
|
229 |
monitor_printf(mon, "%*saddr %d.%d, speed %s, name %s%s\n",
|
230 |
indent, "", bus->busnr, dev->addr,
|
231 |
usb_speed(dev->speed), dev->product_desc, |
232 |
dev->attached ? ", attached" : ""); |
233 |
} |
234 |
|
235 |
void usb_info(Monitor *mon)
|
236 |
{ |
237 |
USBBus *bus; |
238 |
USBDevice *dev; |
239 |
USBPort *port; |
240 |
|
241 |
if (QTAILQ_EMPTY(&busses)) {
|
242 |
monitor_printf(mon, "USB support not enabled\n");
|
243 |
return;
|
244 |
} |
245 |
|
246 |
QTAILQ_FOREACH(bus, &busses, next) { |
247 |
QTAILQ_FOREACH(port, &bus->used, next) { |
248 |
dev = port->dev; |
249 |
if (!dev)
|
250 |
continue;
|
251 |
monitor_printf(mon, " Device %d.%d, Speed %s Mb/s, Product %s\n",
|
252 |
bus->busnr, dev->addr, usb_speed(dev->speed), |
253 |
dev->product_desc); |
254 |
} |
255 |
} |
256 |
} |
257 |
|
258 |
/* handle legacy -usbdevice cmd line option */
|
259 |
USBDevice *usbdevice_create(const char *cmdline) |
260 |
{ |
261 |
USBBus *bus = usb_bus_find(-1 /* any */); |
262 |
DeviceInfo *info; |
263 |
USBDeviceInfo *usb; |
264 |
char driver[32], *params; |
265 |
int len;
|
266 |
|
267 |
params = strchr(cmdline,':');
|
268 |
if (params) {
|
269 |
params++; |
270 |
len = params - cmdline; |
271 |
if (len > sizeof(driver)) |
272 |
len = sizeof(driver);
|
273 |
pstrcpy(driver, len, cmdline); |
274 |
} else {
|
275 |
pstrcpy(driver, sizeof(driver), cmdline);
|
276 |
} |
277 |
|
278 |
for (info = device_info_list; info != NULL; info = info->next) { |
279 |
if (info->bus_info != &usb_bus_info)
|
280 |
continue;
|
281 |
usb = DO_UPCAST(USBDeviceInfo, qdev, info); |
282 |
if (usb->usbdevice_name == NULL) |
283 |
continue;
|
284 |
if (strcmp(usb->usbdevice_name, driver) != 0) |
285 |
continue;
|
286 |
break;
|
287 |
} |
288 |
if (info == NULL) { |
289 |
#if 0
|
290 |
/* no error because some drivers are not converted (yet) */
|
291 |
qemu_error("usbdevice %s not found\n", driver);
|
292 |
#endif
|
293 |
return NULL; |
294 |
} |
295 |
|
296 |
if (!usb->usbdevice_init) {
|
297 |
if (params) {
|
298 |
qemu_error("usbdevice %s accepts no params\n", driver);
|
299 |
return NULL; |
300 |
} |
301 |
return usb_create_simple(bus, usb->qdev.name);
|
302 |
} |
303 |
return usb->usbdevice_init(params);
|
304 |
} |