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/*
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* QEMU USB HUB emulation
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*
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* Copyright (c) 2005 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vl.h" |
25 |
|
26 |
//#define DEBUG
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|
28 |
#define MAX_PORTS 8 |
29 |
|
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typedef struct USBHubPort { |
31 |
USBPort port; |
32 |
uint16_t wPortStatus; |
33 |
uint16_t wPortChange; |
34 |
} USBHubPort; |
35 |
|
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typedef struct USBHubState { |
37 |
USBDevice dev; |
38 |
int nb_ports;
|
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USBHubPort ports[MAX_PORTS]; |
40 |
} USBHubState; |
41 |
|
42 |
#define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE) |
43 |
#define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE) |
44 |
#define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR) |
45 |
#define GetHubStatus (0xa000 | USB_REQ_GET_STATUS) |
46 |
#define GetPortStatus (0xa300 | USB_REQ_GET_STATUS) |
47 |
#define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE) |
48 |
#define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE) |
49 |
|
50 |
#define PORT_STAT_CONNECTION 0x0001 |
51 |
#define PORT_STAT_ENABLE 0x0002 |
52 |
#define PORT_STAT_SUSPEND 0x0004 |
53 |
#define PORT_STAT_OVERCURRENT 0x0008 |
54 |
#define PORT_STAT_RESET 0x0010 |
55 |
#define PORT_STAT_POWER 0x0100 |
56 |
#define PORT_STAT_LOW_SPEED 0x0200 |
57 |
#define PORT_STAT_HIGH_SPEED 0x0400 |
58 |
#define PORT_STAT_TEST 0x0800 |
59 |
#define PORT_STAT_INDICATOR 0x1000 |
60 |
|
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#define PORT_STAT_C_CONNECTION 0x0001 |
62 |
#define PORT_STAT_C_ENABLE 0x0002 |
63 |
#define PORT_STAT_C_SUSPEND 0x0004 |
64 |
#define PORT_STAT_C_OVERCURRENT 0x0008 |
65 |
#define PORT_STAT_C_RESET 0x0010 |
66 |
|
67 |
#define PORT_CONNECTION 0 |
68 |
#define PORT_ENABLE 1 |
69 |
#define PORT_SUSPEND 2 |
70 |
#define PORT_OVERCURRENT 3 |
71 |
#define PORT_RESET 4 |
72 |
#define PORT_POWER 8 |
73 |
#define PORT_LOWSPEED 9 |
74 |
#define PORT_HIGHSPEED 10 |
75 |
#define PORT_C_CONNECTION 16 |
76 |
#define PORT_C_ENABLE 17 |
77 |
#define PORT_C_SUSPEND 18 |
78 |
#define PORT_C_OVERCURRENT 19 |
79 |
#define PORT_C_RESET 20 |
80 |
#define PORT_TEST 21 |
81 |
#define PORT_INDICATOR 22 |
82 |
|
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/* same as Linux kernel root hubs */
|
84 |
|
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static const uint8_t qemu_hub_dev_descriptor[] = { |
86 |
0x12, /* u8 bLength; */ |
87 |
0x01, /* u8 bDescriptorType; Device */ |
88 |
0x10, 0x01, /* u16 bcdUSB; v1.1 */ |
89 |
|
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0x09, /* u8 bDeviceClass; HUB_CLASSCODE */ |
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0x00, /* u8 bDeviceSubClass; */ |
92 |
0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ |
93 |
0x08, /* u8 bMaxPacketSize0; 8 Bytes */ |
94 |
|
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0x00, 0x00, /* u16 idVendor; */ |
96 |
0x00, 0x00, /* u16 idProduct; */ |
97 |
0x01, 0x01, /* u16 bcdDevice */ |
98 |
|
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0x03, /* u8 iManufacturer; */ |
100 |
0x02, /* u8 iProduct; */ |
101 |
0x01, /* u8 iSerialNumber; */ |
102 |
0x01 /* u8 bNumConfigurations; */ |
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}; |
104 |
|
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/* XXX: patch interrupt size */
|
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static const uint8_t qemu_hub_config_descriptor[] = { |
107 |
|
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/* one configuration */
|
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0x09, /* u8 bLength; */ |
110 |
0x02, /* u8 bDescriptorType; Configuration */ |
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0x19, 0x00, /* u16 wTotalLength; */ |
112 |
0x01, /* u8 bNumInterfaces; (1) */ |
113 |
0x01, /* u8 bConfigurationValue; */ |
114 |
0x00, /* u8 iConfiguration; */ |
115 |
0xc0, /* u8 bmAttributes; |
116 |
Bit 7: must be set,
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6: Self-powered,
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5: Remote wakeup,
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4..0: resvd */
|
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0x00, /* u8 MaxPower; */ |
121 |
|
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/* USB 1.1:
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* USB 2.0, single TT organization (mandatory):
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* one interface, protocol 0
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*
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* USB 2.0, multiple TT organization (optional):
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* two interfaces, protocols 1 (like single TT)
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* and 2 (multiple TT mode) ... config is
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* sometimes settable
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* NOT IMPLEMENTED
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*/
|
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|
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/* one interface */
|
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0x09, /* u8 if_bLength; */ |
135 |
0x04, /* u8 if_bDescriptorType; Interface */ |
136 |
0x00, /* u8 if_bInterfaceNumber; */ |
137 |
0x00, /* u8 if_bAlternateSetting; */ |
138 |
0x01, /* u8 if_bNumEndpoints; */ |
139 |
0x09, /* u8 if_bInterfaceClass; HUB_CLASSCODE */ |
140 |
0x00, /* u8 if_bInterfaceSubClass; */ |
141 |
0x00, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */ |
142 |
0x00, /* u8 if_iInterface; */ |
143 |
|
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/* one endpoint (status change endpoint) */
|
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0x07, /* u8 ep_bLength; */ |
146 |
0x05, /* u8 ep_bDescriptorType; Endpoint */ |
147 |
0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ |
148 |
0x03, /* u8 ep_bmAttributes; Interrupt */ |
149 |
0x02, 0x00, /* u16 ep_wMaxPacketSize; 1 + (MAX_ROOT_PORTS / 8) */ |
150 |
0xff /* u8 ep_bInterval; (255ms -- usb 2.0 spec) */ |
151 |
}; |
152 |
|
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static const uint8_t qemu_hub_hub_descriptor[] = |
154 |
{ |
155 |
0x00, /* u8 bLength; patched in later */ |
156 |
0x29, /* u8 bDescriptorType; Hub-descriptor */ |
157 |
0x00, /* u8 bNbrPorts; (patched later) */ |
158 |
0x0a, /* u16 wHubCharacteristics; */ |
159 |
0x00, /* (per-port OC, no power switching) */ |
160 |
0x01, /* u8 bPwrOn2pwrGood; 2ms */ |
161 |
0x00 /* u8 bHubContrCurrent; 0 mA */ |
162 |
|
163 |
/* DeviceRemovable and PortPwrCtrlMask patched in later */
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}; |
165 |
|
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static void usb_hub_attach(USBPort *port1, USBDevice *dev) |
167 |
{ |
168 |
USBHubState *s = port1->opaque; |
169 |
USBHubPort *port = &s->ports[port1->index]; |
170 |
|
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if (dev) {
|
172 |
if (port->port.dev)
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usb_attach(port1, NULL);
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174 |
|
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port->wPortStatus |= PORT_STAT_CONNECTION; |
176 |
port->wPortChange |= PORT_STAT_C_CONNECTION; |
177 |
if (dev->speed == USB_SPEED_LOW)
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port->wPortStatus |= PORT_STAT_LOW_SPEED; |
179 |
else
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port->wPortStatus &= ~PORT_STAT_LOW_SPEED; |
181 |
port->port.dev = dev; |
182 |
/* send the attach message */
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dev->handle_packet(dev, |
184 |
USB_MSG_ATTACH, 0, 0, NULL, 0); |
185 |
} else {
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186 |
dev = port->port.dev; |
187 |
if (dev) {
|
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port->wPortStatus &= ~PORT_STAT_CONNECTION; |
189 |
port->wPortChange |= PORT_STAT_C_CONNECTION; |
190 |
if (port->wPortStatus & PORT_STAT_ENABLE) {
|
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port->wPortStatus &= ~PORT_STAT_ENABLE; |
192 |
port->wPortChange |= PORT_STAT_C_ENABLE; |
193 |
} |
194 |
/* send the detach message */
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195 |
dev->handle_packet(dev, |
196 |
USB_MSG_DETACH, 0, 0, NULL, 0); |
197 |
port->port.dev = NULL;
|
198 |
} |
199 |
} |
200 |
} |
201 |
|
202 |
static void usb_hub_handle_reset(USBDevice *dev, int destroy) |
203 |
{ |
204 |
/* XXX: do it */
|
205 |
if (destroy)
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qemu_free(dev); |
207 |
} |
208 |
|
209 |
static int usb_hub_handle_control(USBDevice *dev, int request, int value, |
210 |
int index, int length, uint8_t *data) |
211 |
{ |
212 |
USBHubState *s = (USBHubState *)dev; |
213 |
int ret;
|
214 |
|
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switch(request) {
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case DeviceRequest | USB_REQ_GET_STATUS:
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217 |
data[0] = (1 << USB_DEVICE_SELF_POWERED) | |
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(dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); |
219 |
data[1] = 0x00; |
220 |
ret = 2;
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break;
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case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
|
223 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
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dev->remote_wakeup = 0;
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} else {
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226 |
goto fail;
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} |
228 |
ret = 0;
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break;
|
230 |
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
|
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if (value == 0 && index != 0x81) { /* clear ep halt */ |
232 |
goto fail;
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233 |
} |
234 |
ret = 0;
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235 |
break;
|
236 |
case DeviceOutRequest | USB_REQ_SET_FEATURE:
|
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if (value == USB_DEVICE_REMOTE_WAKEUP) {
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dev->remote_wakeup = 1;
|
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} else {
|
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goto fail;
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} |
242 |
ret = 0;
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break;
|
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case DeviceOutRequest | USB_REQ_SET_ADDRESS:
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dev->addr = value; |
246 |
ret = 0;
|
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break;
|
248 |
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
|
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switch(value >> 8) { |
250 |
case USB_DT_DEVICE:
|
251 |
memcpy(data, qemu_hub_dev_descriptor, |
252 |
sizeof(qemu_hub_dev_descriptor));
|
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ret = sizeof(qemu_hub_dev_descriptor);
|
254 |
break;
|
255 |
case USB_DT_CONFIG:
|
256 |
memcpy(data, qemu_hub_config_descriptor, |
257 |
sizeof(qemu_hub_config_descriptor));
|
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|
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/* status change endpoint size based on number
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* of ports */
|
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data[22] = (s->nb_ports + 1 + 7) / 8; |
262 |
|
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ret = sizeof(qemu_hub_config_descriptor);
|
264 |
break;
|
265 |
case USB_DT_STRING:
|
266 |
switch(value & 0xff) { |
267 |
case 0: |
268 |
/* language ids */
|
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data[0] = 4; |
270 |
data[1] = 3; |
271 |
data[2] = 0x09; |
272 |
data[3] = 0x04; |
273 |
ret = 4;
|
274 |
break;
|
275 |
case 1: |
276 |
/* serial number */
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277 |
ret = set_usb_string(data, "314159");
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278 |
break;
|
279 |
case 2: |
280 |
/* product description */
|
281 |
ret = set_usb_string(data, "QEMU USB Hub");
|
282 |
break;
|
283 |
case 3: |
284 |
/* vendor description */
|
285 |
ret = set_usb_string(data, "QEMU " QEMU_VERSION);
|
286 |
break;
|
287 |
default:
|
288 |
goto fail;
|
289 |
} |
290 |
break;
|
291 |
default:
|
292 |
goto fail;
|
293 |
} |
294 |
break;
|
295 |
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
296 |
data[0] = 1; |
297 |
ret = 1;
|
298 |
break;
|
299 |
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
300 |
ret = 0;
|
301 |
break;
|
302 |
case DeviceRequest | USB_REQ_GET_INTERFACE:
|
303 |
data[0] = 0; |
304 |
ret = 1;
|
305 |
break;
|
306 |
case DeviceOutRequest | USB_REQ_SET_INTERFACE:
|
307 |
ret = 0;
|
308 |
break;
|
309 |
/* usb specific requests */
|
310 |
case GetHubStatus:
|
311 |
data[0] = 0; |
312 |
data[1] = 0; |
313 |
data[2] = 0; |
314 |
data[3] = 0; |
315 |
ret = 4;
|
316 |
break;
|
317 |
case GetPortStatus:
|
318 |
{ |
319 |
unsigned int n = index - 1; |
320 |
USBHubPort *port; |
321 |
if (n >= s->nb_ports)
|
322 |
goto fail;
|
323 |
port = &s->ports[n]; |
324 |
data[0] = port->wPortStatus;
|
325 |
data[1] = port->wPortStatus >> 8; |
326 |
data[2] = port->wPortChange;
|
327 |
data[3] = port->wPortChange >> 8; |
328 |
ret = 4;
|
329 |
} |
330 |
break;
|
331 |
case SetHubFeature:
|
332 |
case ClearHubFeature:
|
333 |
if (value == 0 || value == 1) { |
334 |
} else {
|
335 |
goto fail;
|
336 |
} |
337 |
ret = 0;
|
338 |
break;
|
339 |
case SetPortFeature:
|
340 |
{ |
341 |
unsigned int n = index - 1; |
342 |
USBHubPort *port; |
343 |
USBDevice *dev; |
344 |
if (n >= s->nb_ports)
|
345 |
goto fail;
|
346 |
port = &s->ports[n]; |
347 |
dev = port->port.dev; |
348 |
switch(value) {
|
349 |
case PORT_SUSPEND:
|
350 |
port->wPortStatus |= PORT_STAT_SUSPEND; |
351 |
break;
|
352 |
case PORT_RESET:
|
353 |
if (dev) {
|
354 |
dev->handle_packet(dev, |
355 |
USB_MSG_RESET, 0, 0, NULL, 0); |
356 |
port->wPortChange |= PORT_STAT_C_RESET; |
357 |
/* set enable bit */
|
358 |
port->wPortStatus |= PORT_STAT_ENABLE; |
359 |
} |
360 |
break;
|
361 |
case PORT_POWER:
|
362 |
break;
|
363 |
default:
|
364 |
goto fail;
|
365 |
} |
366 |
ret = 0;
|
367 |
} |
368 |
break;
|
369 |
case ClearPortFeature:
|
370 |
{ |
371 |
unsigned int n = index - 1; |
372 |
USBHubPort *port; |
373 |
USBDevice *dev; |
374 |
if (n >= s->nb_ports)
|
375 |
goto fail;
|
376 |
port = &s->ports[n]; |
377 |
dev = port->port.dev; |
378 |
switch(value) {
|
379 |
case PORT_ENABLE:
|
380 |
port->wPortStatus &= ~PORT_STAT_ENABLE; |
381 |
break;
|
382 |
case PORT_C_ENABLE:
|
383 |
port->wPortChange &= ~PORT_STAT_C_ENABLE; |
384 |
break;
|
385 |
case PORT_SUSPEND:
|
386 |
port->wPortStatus &= ~PORT_STAT_SUSPEND; |
387 |
break;
|
388 |
case PORT_C_SUSPEND:
|
389 |
port->wPortChange &= ~PORT_STAT_C_SUSPEND; |
390 |
break;
|
391 |
case PORT_C_CONNECTION:
|
392 |
port->wPortChange &= ~PORT_STAT_C_CONNECTION; |
393 |
break;
|
394 |
case PORT_C_OVERCURRENT:
|
395 |
port->wPortChange &= ~PORT_STAT_C_OVERCURRENT; |
396 |
break;
|
397 |
case PORT_C_RESET:
|
398 |
port->wPortChange &= ~PORT_STAT_C_RESET; |
399 |
break;
|
400 |
default:
|
401 |
goto fail;
|
402 |
} |
403 |
ret = 0;
|
404 |
} |
405 |
break;
|
406 |
case GetHubDescriptor:
|
407 |
{ |
408 |
unsigned int n, limit, var_hub_size = 0; |
409 |
memcpy(data, qemu_hub_hub_descriptor, |
410 |
sizeof(qemu_hub_hub_descriptor));
|
411 |
data[2] = s->nb_ports;
|
412 |
|
413 |
/* fill DeviceRemovable bits */
|
414 |
limit = ((s->nb_ports + 1 + 7) / 8) + 7; |
415 |
for (n = 7; n < limit; n++) { |
416 |
data[n] = 0x00;
|
417 |
var_hub_size++; |
418 |
} |
419 |
|
420 |
/* fill PortPwrCtrlMask bits */
|
421 |
limit = limit + ((s->nb_ports + 7) / 8); |
422 |
for (;n < limit; n++) {
|
423 |
data[n] = 0xff;
|
424 |
var_hub_size++; |
425 |
} |
426 |
|
427 |
ret = sizeof(qemu_hub_hub_descriptor) + var_hub_size;
|
428 |
data[0] = ret;
|
429 |
break;
|
430 |
} |
431 |
default:
|
432 |
fail:
|
433 |
ret = USB_RET_STALL; |
434 |
break;
|
435 |
} |
436 |
return ret;
|
437 |
} |
438 |
|
439 |
static int usb_hub_handle_data(USBDevice *dev, int pid, |
440 |
uint8_t devep, uint8_t *data, int len)
|
441 |
{ |
442 |
USBHubState *s = (USBHubState *)dev; |
443 |
int ret;
|
444 |
|
445 |
switch(pid) {
|
446 |
case USB_TOKEN_IN:
|
447 |
if (devep == 1) { |
448 |
USBHubPort *port; |
449 |
unsigned int status; |
450 |
int i, n;
|
451 |
n = (s->nb_ports + 1 + 7) / 8; |
452 |
if (len == 1) { /* FreeBSD workaround */ |
453 |
n = 1;
|
454 |
} else if (n > len) { |
455 |
return USB_RET_BABBLE;
|
456 |
} |
457 |
status = 0;
|
458 |
for(i = 0; i < s->nb_ports; i++) { |
459 |
port = &s->ports[i]; |
460 |
if (port->wPortChange)
|
461 |
status |= (1 << (i + 1)); |
462 |
} |
463 |
if (status != 0) { |
464 |
for(i = 0; i < n; i++) { |
465 |
data[i] = status >> (8 * i);
|
466 |
} |
467 |
ret = n; |
468 |
} else {
|
469 |
ret = USB_RET_NAK; /* usb11 11.13.1 */
|
470 |
} |
471 |
} else {
|
472 |
goto fail;
|
473 |
} |
474 |
break;
|
475 |
case USB_TOKEN_OUT:
|
476 |
default:
|
477 |
fail:
|
478 |
ret = USB_RET_STALL; |
479 |
break;
|
480 |
} |
481 |
return ret;
|
482 |
} |
483 |
|
484 |
static int usb_hub_broadcast_packet(USBHubState *s, int pid, |
485 |
uint8_t devaddr, uint8_t devep, |
486 |
uint8_t *data, int len)
|
487 |
{ |
488 |
USBHubPort *port; |
489 |
USBDevice *dev; |
490 |
int i, ret;
|
491 |
|
492 |
for(i = 0; i < s->nb_ports; i++) { |
493 |
port = &s->ports[i]; |
494 |
dev = port->port.dev; |
495 |
if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) {
|
496 |
ret = dev->handle_packet(dev, pid, |
497 |
devaddr, devep, |
498 |
data, len); |
499 |
if (ret != USB_RET_NODEV) {
|
500 |
return ret;
|
501 |
} |
502 |
} |
503 |
} |
504 |
return USB_RET_NODEV;
|
505 |
} |
506 |
|
507 |
static int usb_hub_handle_packet(USBDevice *dev, int pid, |
508 |
uint8_t devaddr, uint8_t devep, |
509 |
uint8_t *data, int len)
|
510 |
{ |
511 |
USBHubState *s = (USBHubState *)dev; |
512 |
|
513 |
#if defined(DEBUG) && 0 |
514 |
printf("usb_hub: pid=0x%x\n", pid);
|
515 |
#endif
|
516 |
if (dev->state == USB_STATE_DEFAULT &&
|
517 |
dev->addr != 0 &&
|
518 |
devaddr != dev->addr && |
519 |
(pid == USB_TOKEN_SETUP || |
520 |
pid == USB_TOKEN_OUT || |
521 |
pid == USB_TOKEN_IN)) { |
522 |
/* broadcast the packet to the devices */
|
523 |
return usb_hub_broadcast_packet(s, pid, devaddr, devep, data, len);
|
524 |
} |
525 |
return usb_generic_handle_packet(dev, pid, devaddr, devep, data, len);
|
526 |
} |
527 |
|
528 |
USBDevice *usb_hub_init(int nb_ports)
|
529 |
{ |
530 |
USBHubState *s; |
531 |
USBHubPort *port; |
532 |
int i;
|
533 |
|
534 |
if (nb_ports > MAX_PORTS)
|
535 |
return NULL; |
536 |
s = qemu_mallocz(sizeof(USBHubState));
|
537 |
if (!s)
|
538 |
return NULL; |
539 |
s->dev.speed = USB_SPEED_FULL; |
540 |
s->dev.handle_packet = usb_hub_handle_packet; |
541 |
|
542 |
/* generic USB device init */
|
543 |
s->dev.handle_reset = usb_hub_handle_reset; |
544 |
s->dev.handle_control = usb_hub_handle_control; |
545 |
s->dev.handle_data = usb_hub_handle_data; |
546 |
|
547 |
s->nb_ports = nb_ports; |
548 |
for(i = 0; i < s->nb_ports; i++) { |
549 |
port = &s->ports[i]; |
550 |
qemu_register_usb_port(&port->port, s, i, usb_hub_attach); |
551 |
port->wPortStatus = PORT_STAT_POWER; |
552 |
port->wPortChange = 0;
|
553 |
} |
554 |
return (USBDevice *)s;
|
555 |
} |