root / hw / usb-bus.c @ ef816d83
History | View | Annotate | Download (5.8 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->devname, sizeof(dev->devname), qdev->info->name);
|
47 |
dev->info = info; |
48 |
rc = dev->info->init(dev); |
49 |
if (rc == 0) |
50 |
usb_device_attach(dev); |
51 |
return rc;
|
52 |
} |
53 |
|
54 |
static int usb_qdev_exit(DeviceState *qdev) |
55 |
{ |
56 |
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev); |
57 |
|
58 |
usb_device_detach(dev); |
59 |
if (dev->info->handle_destroy) {
|
60 |
dev->info->handle_destroy(dev); |
61 |
} |
62 |
return 0; |
63 |
} |
64 |
|
65 |
void usb_qdev_register(USBDeviceInfo *info)
|
66 |
{ |
67 |
info->qdev.bus_info = &usb_bus_info; |
68 |
info->qdev.init = usb_qdev_init; |
69 |
info->qdev.unplug = qdev_simple_unplug_cb; |
70 |
info->qdev.exit = usb_qdev_exit; |
71 |
qdev_register(&info->qdev); |
72 |
} |
73 |
|
74 |
void usb_qdev_register_many(USBDeviceInfo *info)
|
75 |
{ |
76 |
while (info->qdev.name) {
|
77 |
usb_qdev_register(info); |
78 |
info++; |
79 |
} |
80 |
} |
81 |
|
82 |
USBDevice *usb_create(USBBus *bus, const char *name) |
83 |
{ |
84 |
DeviceState *dev; |
85 |
|
86 |
#if 1 |
87 |
/* temporary stopgap until all usb is properly qdev-ified */
|
88 |
if (!bus) {
|
89 |
bus = usb_bus_find(-1);
|
90 |
if (!bus)
|
91 |
return NULL; |
92 |
fprintf(stderr, "%s: no bus specified, using \"%s\" for \"%s\"\n",
|
93 |
__FUNCTION__, bus->qbus.name, name); |
94 |
} |
95 |
#endif
|
96 |
|
97 |
dev = qdev_create(&bus->qbus, name); |
98 |
return DO_UPCAST(USBDevice, qdev, dev);
|
99 |
} |
100 |
|
101 |
USBDevice *usb_create_simple(USBBus *bus, const char *name) |
102 |
{ |
103 |
USBDevice *dev = usb_create(bus, name); |
104 |
qdev_init(&dev->qdev); |
105 |
return dev;
|
106 |
} |
107 |
|
108 |
void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index, |
109 |
usb_attachfn attach) |
110 |
{ |
111 |
port->opaque = opaque; |
112 |
port->index = index; |
113 |
port->attach = attach; |
114 |
QTAILQ_INSERT_TAIL(&bus->free, port, next); |
115 |
bus->nfree++; |
116 |
} |
117 |
|
118 |
void usb_unregister_port(USBBus *bus, USBPort *port)
|
119 |
{ |
120 |
if (port->dev)
|
121 |
qdev_free(&port->dev->qdev); |
122 |
QTAILQ_REMOVE(&bus->free, port, next); |
123 |
bus->nfree--; |
124 |
} |
125 |
|
126 |
static void do_attach(USBDevice *dev) |
127 |
{ |
128 |
USBBus *bus = usb_bus_from_device(dev); |
129 |
USBPort *port; |
130 |
|
131 |
if (dev->attached) {
|
132 |
fprintf(stderr, "Warning: tried to attach usb device %s twice\n",
|
133 |
dev->devname); |
134 |
return;
|
135 |
} |
136 |
dev->attached++; |
137 |
|
138 |
port = QTAILQ_FIRST(&bus->free); |
139 |
QTAILQ_REMOVE(&bus->free, port, next); |
140 |
bus->nfree--; |
141 |
|
142 |
usb_attach(port, dev); |
143 |
|
144 |
QTAILQ_INSERT_TAIL(&bus->used, port, next); |
145 |
bus->nused++; |
146 |
} |
147 |
|
148 |
int usb_device_attach(USBDevice *dev)
|
149 |
{ |
150 |
USBBus *bus = usb_bus_from_device(dev); |
151 |
USBDevice *hub; |
152 |
|
153 |
if (bus->nfree == 1) { |
154 |
/* Create a new hub and chain it on. */
|
155 |
hub = usb_create_simple(bus, "QEMU USB Hub");
|
156 |
} |
157 |
do_attach(dev); |
158 |
return 0; |
159 |
} |
160 |
|
161 |
int usb_device_detach(USBDevice *dev)
|
162 |
{ |
163 |
USBBus *bus = usb_bus_from_device(dev); |
164 |
USBPort *port; |
165 |
|
166 |
if (!dev->attached) {
|
167 |
fprintf(stderr, "Warning: tried to detach unattached usb device %s\n",
|
168 |
dev->devname); |
169 |
return -1; |
170 |
} |
171 |
dev->attached--; |
172 |
|
173 |
QTAILQ_FOREACH(port, &bus->used, next) { |
174 |
if (port->dev == dev)
|
175 |
break;
|
176 |
} |
177 |
assert(port != NULL);
|
178 |
|
179 |
QTAILQ_REMOVE(&bus->used, port, next); |
180 |
bus->nused--; |
181 |
|
182 |
usb_attach(port, NULL);
|
183 |
|
184 |
QTAILQ_INSERT_TAIL(&bus->free, port, next); |
185 |
bus->nfree++; |
186 |
return 0; |
187 |
} |
188 |
|
189 |
int usb_device_delete_addr(int busnr, int addr) |
190 |
{ |
191 |
USBBus *bus; |
192 |
USBPort *port; |
193 |
USBDevice *dev; |
194 |
|
195 |
bus = usb_bus_find(busnr); |
196 |
if (!bus)
|
197 |
return -1; |
198 |
|
199 |
QTAILQ_FOREACH(port, &bus->used, next) { |
200 |
if (port->dev->addr == addr)
|
201 |
break;
|
202 |
} |
203 |
if (!port)
|
204 |
return -1; |
205 |
dev = port->dev; |
206 |
|
207 |
qdev_free(&dev->qdev); |
208 |
return 0; |
209 |
} |
210 |
|
211 |
static const char *usb_speed(unsigned int speed) |
212 |
{ |
213 |
static const char *txt[] = { |
214 |
[ USB_SPEED_LOW ] = "1.5",
|
215 |
[ USB_SPEED_FULL ] = "12",
|
216 |
[ USB_SPEED_HIGH ] = "480",
|
217 |
}; |
218 |
if (speed >= ARRAY_SIZE(txt))
|
219 |
return "?"; |
220 |
return txt[speed];
|
221 |
} |
222 |
|
223 |
static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent) |
224 |
{ |
225 |
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev); |
226 |
USBBus *bus = usb_bus_from_device(dev); |
227 |
|
228 |
monitor_printf(mon, "%*saddr %d.%d, speed %s, name %s\n", indent, "", |
229 |
bus->busnr, dev->addr, |
230 |
usb_speed(dev->speed), dev->devname); |
231 |
} |
232 |
|
233 |
void usb_info(Monitor *mon)
|
234 |
{ |
235 |
USBBus *bus; |
236 |
USBDevice *dev; |
237 |
USBPort *port; |
238 |
|
239 |
if (QTAILQ_EMPTY(&busses)) {
|
240 |
monitor_printf(mon, "USB support not enabled\n");
|
241 |
return;
|
242 |
} |
243 |
|
244 |
QTAILQ_FOREACH(bus, &busses, next) { |
245 |
QTAILQ_FOREACH(port, &bus->used, next) { |
246 |
dev = port->dev; |
247 |
if (!dev)
|
248 |
continue;
|
249 |
monitor_printf(mon, " Device %d.%d, Speed %s Mb/s, Product %s\n",
|
250 |
bus->busnr, dev->addr, usb_speed(dev->speed), dev->devname); |
251 |
} |
252 |
} |
253 |
} |
254 |
|