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| 1 |
/*
|
|---|---|
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* QEMU USB emulation
|
| 3 |
*
|
| 4 |
* Copyright (c) 2005 Fabrice Bellard
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*
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| 6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
| 7 |
* of this software and associated documentation files (the "Software"), to deal
|
| 8 |
* in the Software without restriction, including without limitation the rights
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| 9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
| 10 |
* copies of the Software, and to permit persons to whom the Software is
|
| 11 |
* 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
|
| 14 |
* all copies or substantial portions of the Software.
|
| 15 |
*
|
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
| 17 |
* 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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| 19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
| 20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
| 21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
| 22 |
* THE SOFTWARE.
|
| 23 |
*/
|
| 24 |
#include "vl.h" |
| 25 |
|
| 26 |
void usb_attach(USBPort *port, USBDevice *dev)
|
| 27 |
{
|
| 28 |
port->attach(port, dev); |
| 29 |
} |
| 30 |
|
| 31 |
/**********************/
|
| 32 |
/* generic USB device helpers (you are not forced to use them when
|
| 33 |
writing your USB device driver, but they help handling the
|
| 34 |
protocol)
|
| 35 |
*/
|
| 36 |
|
| 37 |
#define SETUP_STATE_IDLE 0 |
| 38 |
#define SETUP_STATE_DATA 1 |
| 39 |
#define SETUP_STATE_ACK 2 |
| 40 |
|
| 41 |
int usb_generic_handle_packet(USBDevice *s, int pid, |
| 42 |
uint8_t devaddr, uint8_t devep, |
| 43 |
uint8_t *data, int len)
|
| 44 |
{
|
| 45 |
int l, ret = 0; |
| 46 |
|
| 47 |
switch(pid) {
|
| 48 |
case USB_MSG_ATTACH:
|
| 49 |
s->state = USB_STATE_ATTACHED; |
| 50 |
break;
|
| 51 |
case USB_MSG_DETACH:
|
| 52 |
s->state = USB_STATE_NOTATTACHED; |
| 53 |
break;
|
| 54 |
case USB_MSG_RESET:
|
| 55 |
s->remote_wakeup = 0;
|
| 56 |
s->addr = 0;
|
| 57 |
s->state = USB_STATE_DEFAULT; |
| 58 |
s->handle_reset(s); |
| 59 |
break;
|
| 60 |
case USB_TOKEN_SETUP:
|
| 61 |
if (s->state < USB_STATE_DEFAULT || devaddr != s->addr)
|
| 62 |
return USB_RET_NODEV;
|
| 63 |
if (len != 8) |
| 64 |
goto fail;
|
| 65 |
memcpy(s->setup_buf, data, 8);
|
| 66 |
s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6]; |
| 67 |
s->setup_index = 0;
|
| 68 |
if (s->setup_buf[0] & USB_DIR_IN) { |
| 69 |
ret = s->handle_control(s, |
| 70 |
(s->setup_buf[0] << 8) | s->setup_buf[1], |
| 71 |
(s->setup_buf[3] << 8) | s->setup_buf[2], |
| 72 |
(s->setup_buf[5] << 8) | s->setup_buf[4], |
| 73 |
s->setup_len, |
| 74 |
s->data_buf); |
| 75 |
if (ret < 0) |
| 76 |
return ret;
|
| 77 |
if (ret < s->setup_len)
|
| 78 |
s->setup_len = ret; |
| 79 |
s->setup_state = SETUP_STATE_DATA; |
| 80 |
} else {
|
| 81 |
if (s->setup_len == 0) |
| 82 |
s->setup_state = SETUP_STATE_ACK; |
| 83 |
else
|
| 84 |
s->setup_state = SETUP_STATE_DATA; |
| 85 |
} |
| 86 |
break;
|
| 87 |
case USB_TOKEN_IN:
|
| 88 |
if (s->state < USB_STATE_DEFAULT || devaddr != s->addr)
|
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return USB_RET_NODEV;
|
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switch(devep) {
|
| 91 |
case 0: |
| 92 |
switch(s->setup_state) {
|
| 93 |
case SETUP_STATE_ACK:
|
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s->setup_state = SETUP_STATE_IDLE; |
| 95 |
if (!(s->setup_buf[0] & USB_DIR_IN)) { |
| 96 |
ret = s->handle_control(s, |
| 97 |
(s->setup_buf[0] << 8) | s->setup_buf[1], |
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(s->setup_buf[3] << 8) | s->setup_buf[2], |
| 99 |
(s->setup_buf[5] << 8) | s->setup_buf[4], |
| 100 |
s->setup_len, |
| 101 |
s->data_buf); |
| 102 |
if (ret > 0) |
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ret = 0;
|
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} else {
|
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goto fail;
|
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} |
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break;
|
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case SETUP_STATE_DATA:
|
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if (s->setup_buf[0] & USB_DIR_IN) { |
| 110 |
l = s->setup_len - s->setup_index; |
| 111 |
if (l > len)
|
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l = len; |
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memcpy(data, s->data_buf + s->setup_index, l); |
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s->setup_index += l; |
| 115 |
if (s->setup_index >= s->setup_len)
|
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s->setup_state = SETUP_STATE_ACK; |
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ret = l; |
| 118 |
} else {
|
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s->setup_state = SETUP_STATE_IDLE; |
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goto fail;
|
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} |
| 122 |
break;
|
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default:
|
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goto fail;
|
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} |
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break;
|
| 127 |
default:
|
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ret = s->handle_data(s, pid, devep, data, len); |
| 129 |
break;
|
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} |
| 131 |
break;
|
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case USB_TOKEN_OUT:
|
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if (s->state < USB_STATE_DEFAULT || devaddr != s->addr)
|
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return USB_RET_NODEV;
|
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switch(devep) {
|
| 136 |
case 0: |
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switch(s->setup_state) {
|
| 138 |
case SETUP_STATE_ACK:
|
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s->setup_state = SETUP_STATE_IDLE; |
| 140 |
if (s->setup_buf[0] & USB_DIR_IN) { |
| 141 |
/* transfer OK */
|
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} else {
|
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goto fail;
|
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} |
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break;
|
| 146 |
case SETUP_STATE_DATA:
|
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if (!(s->setup_buf[0] & USB_DIR_IN)) { |
| 148 |
l = s->setup_len - s->setup_index; |
| 149 |
if (l > len)
|
| 150 |
l = len; |
| 151 |
memcpy(s->data_buf + s->setup_index, data, l); |
| 152 |
s->setup_index += l; |
| 153 |
if (s->setup_index >= s->setup_len)
|
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s->setup_state = SETUP_STATE_ACK; |
| 155 |
ret = l; |
| 156 |
} else {
|
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s->setup_state = SETUP_STATE_IDLE; |
| 158 |
goto fail;
|
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} |
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break;
|
| 161 |
default:
|
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goto fail;
|
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} |
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break;
|
| 165 |
default:
|
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ret = s->handle_data(s, pid, devep, data, len); |
| 167 |
break;
|
| 168 |
} |
| 169 |
break;
|
| 170 |
default:
|
| 171 |
fail:
|
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ret = USB_RET_STALL; |
| 173 |
break;
|
| 174 |
} |
| 175 |
return ret;
|
| 176 |
} |
| 177 |
|
| 178 |
/* XXX: fix overflow */
|
| 179 |
int set_usb_string(uint8_t *buf, const char *str) |
| 180 |
{
|
| 181 |
int len, i;
|
| 182 |
uint8_t *q; |
| 183 |
|
| 184 |
q = buf; |
| 185 |
len = strlen(str); |
| 186 |
*q++ = 2 * len + 1; |
| 187 |
*q++ = 3;
|
| 188 |
for(i = 0; i < len; i++) { |
| 189 |
*q++ = str[i]; |
| 190 |
*q++ = 0;
|
| 191 |
} |
| 192 |
return q - buf;
|
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} |
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|
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/**********************/
|
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/* USB hub emulation */
|
| 197 |
|
| 198 |
//#define DEBUG
|
| 199 |
|
| 200 |
#define MAX_PORTS 8 |
| 201 |
|
| 202 |
typedef struct USBHubPort { |
| 203 |
USBPort port; |
| 204 |
uint16_t wPortStatus; |
| 205 |
uint16_t wPortChange; |
| 206 |
} USBHubPort; |
| 207 |
|
| 208 |
typedef struct USBHubState { |
| 209 |
USBDevice dev; |
| 210 |
int nb_ports;
|
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USBHubPort ports[MAX_PORTS]; |
| 212 |
} USBHubState; |
| 213 |
|
| 214 |
#define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE) |
| 215 |
#define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE) |
| 216 |
#define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR) |
| 217 |
#define GetHubStatus (0xa000 | USB_REQ_GET_STATUS) |
| 218 |
#define GetPortStatus (0xa300 | USB_REQ_GET_STATUS) |
| 219 |
#define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE) |
| 220 |
#define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE) |
| 221 |
|
| 222 |
#define PORT_STAT_CONNECTION 0x0001 |
| 223 |
#define PORT_STAT_ENABLE 0x0002 |
| 224 |
#define PORT_STAT_SUSPEND 0x0004 |
| 225 |
#define PORT_STAT_OVERCURRENT 0x0008 |
| 226 |
#define PORT_STAT_RESET 0x0010 |
| 227 |
#define PORT_STAT_POWER 0x0100 |
| 228 |
#define PORT_STAT_LOW_SPEED 0x0200 |
| 229 |
#define PORT_STAT_HIGH_SPEED 0x0400 |
| 230 |
#define PORT_STAT_TEST 0x0800 |
| 231 |
#define PORT_STAT_INDICATOR 0x1000 |
| 232 |
|
| 233 |
#define PORT_STAT_C_CONNECTION 0x0001 |
| 234 |
#define PORT_STAT_C_ENABLE 0x0002 |
| 235 |
#define PORT_STAT_C_SUSPEND 0x0004 |
| 236 |
#define PORT_STAT_C_OVERCURRENT 0x0008 |
| 237 |
#define PORT_STAT_C_RESET 0x0010 |
| 238 |
|
| 239 |
#define PORT_CONNECTION 0 |
| 240 |
#define PORT_ENABLE 1 |
| 241 |
#define PORT_SUSPEND 2 |
| 242 |
#define PORT_OVERCURRENT 3 |
| 243 |
#define PORT_RESET 4 |
| 244 |
#define PORT_POWER 8 |
| 245 |
#define PORT_LOWSPEED 9 |
| 246 |
#define PORT_HIGHSPEED 10 |
| 247 |
#define PORT_C_CONNECTION 16 |
| 248 |
#define PORT_C_ENABLE 17 |
| 249 |
#define PORT_C_SUSPEND 18 |
| 250 |
#define PORT_C_OVERCURRENT 19 |
| 251 |
#define PORT_C_RESET 20 |
| 252 |
#define PORT_TEST 21 |
| 253 |
#define PORT_INDICATOR 22 |
| 254 |
|
| 255 |
/* same as Linux kernel root hubs */
|
| 256 |
|
| 257 |
static const uint8_t qemu_hub_dev_descriptor[] = { |
| 258 |
0x12, /* u8 bLength; */ |
| 259 |
0x01, /* u8 bDescriptorType; Device */ |
| 260 |
0x10, 0x01, /* u16 bcdUSB; v1.1 */ |
| 261 |
|
| 262 |
0x09, /* u8 bDeviceClass; HUB_CLASSCODE */ |
| 263 |
0x00, /* u8 bDeviceSubClass; */ |
| 264 |
0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ |
| 265 |
0x08, /* u8 bMaxPacketSize0; 8 Bytes */ |
| 266 |
|
| 267 |
0x00, 0x00, /* u16 idVendor; */ |
| 268 |
0x00, 0x00, /* u16 idProduct; */ |
| 269 |
0x01, 0x01, /* u16 bcdDevice */ |
| 270 |
|
| 271 |
0x03, /* u8 iManufacturer; */ |
| 272 |
0x02, /* u8 iProduct; */ |
| 273 |
0x01, /* u8 iSerialNumber; */ |
| 274 |
0x01 /* u8 bNumConfigurations; */ |
| 275 |
}; |
| 276 |
|
| 277 |
/* XXX: patch interrupt size */
|
| 278 |
static const uint8_t qemu_hub_config_descriptor[] = { |
| 279 |
|
| 280 |
/* one configuration */
|
| 281 |
0x09, /* u8 bLength; */ |
| 282 |
0x02, /* u8 bDescriptorType; Configuration */ |
| 283 |
0x19, 0x00, /* u16 wTotalLength; */ |
| 284 |
0x01, /* u8 bNumInterfaces; (1) */ |
| 285 |
0x01, /* u8 bConfigurationValue; */ |
| 286 |
0x00, /* u8 iConfiguration; */ |
| 287 |
0xc0, /* u8 bmAttributes; |
| 288 |
Bit 7: must be set,
|
| 289 |
6: Self-powered,
|
| 290 |
5: Remote wakeup,
|
| 291 |
4..0: resvd */
|
| 292 |
0x00, /* u8 MaxPower; */ |
| 293 |
|
| 294 |
/* USB 1.1:
|
| 295 |
* USB 2.0, single TT organization (mandatory):
|
| 296 |
* one interface, protocol 0
|
| 297 |
*
|
| 298 |
* USB 2.0, multiple TT organization (optional):
|
| 299 |
* two interfaces, protocols 1 (like single TT)
|
| 300 |
* and 2 (multiple TT mode) ... config is
|
| 301 |
* sometimes settable
|
| 302 |
* NOT IMPLEMENTED
|
| 303 |
*/
|
| 304 |
|
| 305 |
/* one interface */
|
| 306 |
0x09, /* u8 if_bLength; */ |
| 307 |
0x04, /* u8 if_bDescriptorType; Interface */ |
| 308 |
0x00, /* u8 if_bInterfaceNumber; */ |
| 309 |
0x00, /* u8 if_bAlternateSetting; */ |
| 310 |
0x01, /* u8 if_bNumEndpoints; */ |
| 311 |
0x09, /* u8 if_bInterfaceClass; HUB_CLASSCODE */ |
| 312 |
0x00, /* u8 if_bInterfaceSubClass; */ |
| 313 |
0x00, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */ |
| 314 |
0x00, /* u8 if_iInterface; */ |
| 315 |
|
| 316 |
/* one endpoint (status change endpoint) */
|
| 317 |
0x07, /* u8 ep_bLength; */ |
| 318 |
0x05, /* u8 ep_bDescriptorType; Endpoint */ |
| 319 |
0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ |
| 320 |
0x03, /* u8 ep_bmAttributes; Interrupt */ |
| 321 |
0x02, 0x00, /* u16 ep_wMaxPacketSize; 1 + (MAX_ROOT_PORTS / 8) */ |
| 322 |
0xff /* u8 ep_bInterval; (255ms -- usb 2.0 spec) */ |
| 323 |
}; |
| 324 |
|
| 325 |
static const uint8_t qemu_hub_hub_descriptor[] = |
| 326 |
{
|
| 327 |
0x09, /* u8 bLength; */ |
| 328 |
0x29, /* u8 bDescriptorType; Hub-descriptor */ |
| 329 |
0x00, /* u8 bNbrPorts; (patched later) */ |
| 330 |
0x0a, /* u16 wHubCharacteristics; */ |
| 331 |
0x00, /* (per-port OC, no power switching) */ |
| 332 |
0x01, /* u8 bPwrOn2pwrGood; 2ms */ |
| 333 |
0x00, /* u8 bHubContrCurrent; 0 mA */ |
| 334 |
0x00, /* u8 DeviceRemovable; *** 7 Ports max *** */ |
| 335 |
0xff /* u8 PortPwrCtrlMask; *** 7 ports max *** */ |
| 336 |
}; |
| 337 |
|
| 338 |
static void usb_hub_attach(USBPort *port1, USBDevice *dev) |
| 339 |
{
|
| 340 |
USBHubState *s = port1->opaque; |
| 341 |
USBHubPort *port = &s->ports[port1->index]; |
| 342 |
|
| 343 |
if (dev) {
|
| 344 |
if (port->port.dev)
|
| 345 |
usb_attach(port1, NULL);
|
| 346 |
|
| 347 |
port->wPortStatus |= PORT_STAT_CONNECTION; |
| 348 |
port->wPortChange |= PORT_STAT_C_CONNECTION; |
| 349 |
if (dev->speed == USB_SPEED_LOW)
|
| 350 |
port->wPortStatus |= PORT_STAT_LOW_SPEED; |
| 351 |
else
|
| 352 |
port->wPortStatus &= ~PORT_STAT_LOW_SPEED; |
| 353 |
port->port.dev = dev; |
| 354 |
} else {
|
| 355 |
dev = port->port.dev; |
| 356 |
if (dev) {
|
| 357 |
port->wPortStatus &= ~PORT_STAT_CONNECTION; |
| 358 |
port->wPortChange |= PORT_STAT_C_CONNECTION; |
| 359 |
if (port->wPortStatus & PORT_STAT_ENABLE) {
|
| 360 |
port->wPortStatus &= ~PORT_STAT_ENABLE; |
| 361 |
port->wPortChange |= PORT_STAT_C_ENABLE; |
| 362 |
} |
| 363 |
port->port.dev = NULL;
|
| 364 |
} |
| 365 |
} |
| 366 |
} |
| 367 |
|
| 368 |
static void usb_hub_handle_reset(USBDevice *dev) |
| 369 |
{
|
| 370 |
/* XXX: do it */
|
| 371 |
} |
| 372 |
|
| 373 |
static int usb_hub_handle_control(USBDevice *dev, int request, int value, |
| 374 |
int index, int length, uint8_t *data) |
| 375 |
{
|
| 376 |
USBHubState *s = (USBHubState *)dev; |
| 377 |
int ret;
|
| 378 |
|
| 379 |
switch(request) {
|
| 380 |
case DeviceRequest | USB_REQ_GET_STATUS:
|
| 381 |
data[0] = (1 << USB_DEVICE_SELF_POWERED) | |
| 382 |
(dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); |
| 383 |
data[1] = 0x00; |
| 384 |
ret = 2;
|
| 385 |
break;
|
| 386 |
case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
|
| 387 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
|
| 388 |
dev->remote_wakeup = 0;
|
| 389 |
} else {
|
| 390 |
goto fail;
|
| 391 |
} |
| 392 |
ret = 0;
|
| 393 |
break;
|
| 394 |
case DeviceOutRequest | USB_REQ_SET_FEATURE:
|
| 395 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
|
| 396 |
dev->remote_wakeup = 1;
|
| 397 |
} else {
|
| 398 |
goto fail;
|
| 399 |
} |
| 400 |
ret = 0;
|
| 401 |
break;
|
| 402 |
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
| 403 |
dev->addr = value; |
| 404 |
ret = 0;
|
| 405 |
break;
|
| 406 |
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
|
| 407 |
switch(value >> 8) { |
| 408 |
case USB_DT_DEVICE:
|
| 409 |
memcpy(data, qemu_hub_dev_descriptor, |
| 410 |
sizeof(qemu_hub_dev_descriptor));
|
| 411 |
ret = sizeof(qemu_hub_dev_descriptor);
|
| 412 |
break;
|
| 413 |
case USB_DT_CONFIG:
|
| 414 |
memcpy(data, qemu_hub_config_descriptor, |
| 415 |
sizeof(qemu_hub_config_descriptor));
|
| 416 |
ret = sizeof(qemu_hub_config_descriptor);
|
| 417 |
break;
|
| 418 |
case USB_DT_STRING:
|
| 419 |
switch(value & 0xff) { |
| 420 |
case 0: |
| 421 |
/* language ids */
|
| 422 |
data[0] = 4; |
| 423 |
data[1] = 3; |
| 424 |
data[2] = 0x09; |
| 425 |
data[3] = 0x04; |
| 426 |
ret = 4;
|
| 427 |
break;
|
| 428 |
case 1: |
| 429 |
/* serial number */
|
| 430 |
ret = set_usb_string(data, "314159");
|
| 431 |
break;
|
| 432 |
case 2: |
| 433 |
/* product description */
|
| 434 |
ret = set_usb_string(data, "QEMU USB Hub");
|
| 435 |
break;
|
| 436 |
case 3: |
| 437 |
/* vendor description */
|
| 438 |
ret = set_usb_string(data, "QEMU " QEMU_VERSION);
|
| 439 |
break;
|
| 440 |
default:
|
| 441 |
goto fail;
|
| 442 |
} |
| 443 |
break;
|
| 444 |
default:
|
| 445 |
goto fail;
|
| 446 |
} |
| 447 |
break;
|
| 448 |
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
| 449 |
data[0] = 1; |
| 450 |
ret = 1;
|
| 451 |
break;
|
| 452 |
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
| 453 |
ret = 0;
|
| 454 |
break;
|
| 455 |
case DeviceRequest | USB_REQ_GET_INTERFACE:
|
| 456 |
data[0] = 0; |
| 457 |
ret = 1;
|
| 458 |
break;
|
| 459 |
case DeviceOutRequest | USB_REQ_SET_INTERFACE:
|
| 460 |
ret = 0;
|
| 461 |
break;
|
| 462 |
/* usb specific requests */
|
| 463 |
case GetHubStatus:
|
| 464 |
data[0] = 0; |
| 465 |
data[1] = 0; |
| 466 |
data[2] = 0; |
| 467 |
data[3] = 0; |
| 468 |
ret = 4;
|
| 469 |
break;
|
| 470 |
case GetPortStatus:
|
| 471 |
{
|
| 472 |
unsigned int n = index - 1; |
| 473 |
USBHubPort *port; |
| 474 |
if (n >= s->nb_ports)
|
| 475 |
goto fail;
|
| 476 |
port = &s->ports[n]; |
| 477 |
data[0] = port->wPortStatus;
|
| 478 |
data[1] = port->wPortStatus >> 8; |
| 479 |
data[2] = port->wPortChange;
|
| 480 |
data[3] = port->wPortChange >> 8; |
| 481 |
ret = 4;
|
| 482 |
} |
| 483 |
break;
|
| 484 |
case SetHubFeature:
|
| 485 |
case ClearHubFeature:
|
| 486 |
if (value == 0 || value == 1) { |
| 487 |
} else {
|
| 488 |
goto fail;
|
| 489 |
} |
| 490 |
ret = 0;
|
| 491 |
break;
|
| 492 |
case SetPortFeature:
|
| 493 |
{
|
| 494 |
unsigned int n = index - 1; |
| 495 |
USBHubPort *port; |
| 496 |
USBDevice *dev; |
| 497 |
if (n >= s->nb_ports)
|
| 498 |
goto fail;
|
| 499 |
port = &s->ports[n]; |
| 500 |
dev = port->port.dev; |
| 501 |
switch(value) {
|
| 502 |
case PORT_SUSPEND:
|
| 503 |
port->wPortStatus |= PORT_STAT_SUSPEND; |
| 504 |
break;
|
| 505 |
case PORT_RESET:
|
| 506 |
if (dev) {
|
| 507 |
dev->handle_packet(dev, |
| 508 |
USB_MSG_RESET, 0, 0, NULL, 0); |
| 509 |
port->wPortChange |= PORT_STAT_C_RESET; |
| 510 |
/* set enable bit */
|
| 511 |
port->wPortChange |= PORT_STAT_C_ENABLE; |
| 512 |
port->wPortStatus |= PORT_STAT_ENABLE; |
| 513 |
} |
| 514 |
break;
|
| 515 |
case PORT_POWER:
|
| 516 |
break;
|
| 517 |
default:
|
| 518 |
goto fail;
|
| 519 |
} |
| 520 |
ret = 0;
|
| 521 |
} |
| 522 |
break;
|
| 523 |
case ClearPortFeature:
|
| 524 |
{
|
| 525 |
unsigned int n = index - 1; |
| 526 |
USBHubPort *port; |
| 527 |
USBDevice *dev; |
| 528 |
if (n >= s->nb_ports)
|
| 529 |
goto fail;
|
| 530 |
port = &s->ports[n]; |
| 531 |
dev = port->port.dev; |
| 532 |
switch(value) {
|
| 533 |
case PORT_ENABLE:
|
| 534 |
port->wPortStatus &= ~PORT_STAT_ENABLE; |
| 535 |
break;
|
| 536 |
case PORT_C_ENABLE:
|
| 537 |
port->wPortChange &= ~PORT_STAT_C_ENABLE; |
| 538 |
break;
|
| 539 |
case PORT_SUSPEND:
|
| 540 |
port->wPortStatus &= ~PORT_STAT_SUSPEND; |
| 541 |
break;
|
| 542 |
case PORT_C_SUSPEND:
|
| 543 |
port->wPortChange &= ~PORT_STAT_C_SUSPEND; |
| 544 |
break;
|
| 545 |
case PORT_C_CONNECTION:
|
| 546 |
port->wPortChange &= ~PORT_STAT_C_CONNECTION; |
| 547 |
break;
|
| 548 |
case PORT_C_OVERCURRENT:
|
| 549 |
port->wPortChange &= ~PORT_STAT_C_OVERCURRENT; |
| 550 |
break;
|
| 551 |
case PORT_C_RESET:
|
| 552 |
port->wPortChange &= ~PORT_STAT_C_RESET; |
| 553 |
break;
|
| 554 |
default:
|
| 555 |
goto fail;
|
| 556 |
} |
| 557 |
ret = 0;
|
| 558 |
} |
| 559 |
break;
|
| 560 |
case GetHubDescriptor:
|
| 561 |
memcpy(data, qemu_hub_hub_descriptor, |
| 562 |
sizeof(qemu_hub_hub_descriptor));
|
| 563 |
data[2] = s->nb_ports;
|
| 564 |
ret = sizeof(qemu_hub_hub_descriptor);
|
| 565 |
break;
|
| 566 |
default:
|
| 567 |
fail:
|
| 568 |
ret = USB_RET_STALL; |
| 569 |
break;
|
| 570 |
} |
| 571 |
return ret;
|
| 572 |
} |
| 573 |
|
| 574 |
static int usb_hub_handle_data(USBDevice *dev, int pid, |
| 575 |
uint8_t devep, uint8_t *data, int len)
|
| 576 |
{
|
| 577 |
USBHubState *s = (USBHubState *)dev; |
| 578 |
int ret;
|
| 579 |
|
| 580 |
switch(pid) {
|
| 581 |
case USB_TOKEN_IN:
|
| 582 |
if (devep == 1) { |
| 583 |
USBHubPort *port; |
| 584 |
unsigned int status; |
| 585 |
int i, n;
|
| 586 |
n = (s->nb_ports + 1 + 7) / 8; |
| 587 |
if (n > len)
|
| 588 |
return USB_RET_BABBLE;
|
| 589 |
status = 0;
|
| 590 |
for(i = 0; i < s->nb_ports; i++) { |
| 591 |
port = &s->ports[i]; |
| 592 |
if (port->wPortChange)
|
| 593 |
status |= (1 << (i + 1)); |
| 594 |
} |
| 595 |
if (status != 0) { |
| 596 |
for(i = 0; i < n; i++) { |
| 597 |
data[i] = status >> (8 * i);
|
| 598 |
} |
| 599 |
ret = n; |
| 600 |
} else {
|
| 601 |
ret = 0;
|
| 602 |
} |
| 603 |
} else {
|
| 604 |
goto fail;
|
| 605 |
} |
| 606 |
break;
|
| 607 |
case USB_TOKEN_OUT:
|
| 608 |
default:
|
| 609 |
fail:
|
| 610 |
ret = USB_RET_STALL; |
| 611 |
break;
|
| 612 |
} |
| 613 |
return ret;
|
| 614 |
} |
| 615 |
|
| 616 |
static int usb_hub_broadcast_packet(USBHubState *s, int pid, |
| 617 |
uint8_t devaddr, uint8_t devep, |
| 618 |
uint8_t *data, int len)
|
| 619 |
{
|
| 620 |
USBHubPort *port; |
| 621 |
USBDevice *dev; |
| 622 |
int i, ret;
|
| 623 |
|
| 624 |
for(i = 0; i < s->nb_ports; i++) { |
| 625 |
port = &s->ports[i]; |
| 626 |
dev = port->port.dev; |
| 627 |
if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) {
|
| 628 |
ret = dev->handle_packet(dev, pid, |
| 629 |
devaddr, devep, |
| 630 |
data, len); |
| 631 |
if (ret != USB_RET_NODEV) {
|
| 632 |
return ret;
|
| 633 |
} |
| 634 |
} |
| 635 |
} |
| 636 |
return USB_RET_NODEV;
|
| 637 |
} |
| 638 |
|
| 639 |
static int usb_hub_handle_packet(USBDevice *dev, int pid, |
| 640 |
uint8_t devaddr, uint8_t devep, |
| 641 |
uint8_t *data, int len)
|
| 642 |
{
|
| 643 |
USBHubState *s = (USBHubState *)dev; |
| 644 |
|
| 645 |
#if defined(DEBUG) && 0 |
| 646 |
printf("usb_hub: pid=0x%x\n", pid);
|
| 647 |
#endif
|
| 648 |
if (dev->state == USB_STATE_DEFAULT &&
|
| 649 |
dev->addr != 0 &&
|
| 650 |
devaddr != dev->addr && |
| 651 |
(pid == USB_TOKEN_SETUP || |
| 652 |
pid == USB_TOKEN_OUT || |
| 653 |
pid == USB_TOKEN_IN)) {
|
| 654 |
/* broadcast the packet to the devices */
|
| 655 |
return usb_hub_broadcast_packet(s, pid, devaddr, devep, data, len);
|
| 656 |
} |
| 657 |
return usb_generic_handle_packet(dev, pid, devaddr, devep, data, len);
|
| 658 |
} |
| 659 |
|
| 660 |
USBDevice *usb_hub_init(USBPort **usb_ports, int nb_ports)
|
| 661 |
{
|
| 662 |
USBHubState *s; |
| 663 |
USBHubPort *port; |
| 664 |
int i;
|
| 665 |
|
| 666 |
if (nb_ports > MAX_PORTS)
|
| 667 |
return NULL; |
| 668 |
s = qemu_mallocz(sizeof(USBHubState));
|
| 669 |
if (!s)
|
| 670 |
return NULL; |
| 671 |
s->dev.speed = USB_SPEED_FULL; |
| 672 |
s->dev.handle_packet = usb_hub_handle_packet; |
| 673 |
|
| 674 |
/* generic USB device init */
|
| 675 |
s->dev.handle_reset = usb_hub_handle_reset; |
| 676 |
s->dev.handle_control = usb_hub_handle_control; |
| 677 |
s->dev.handle_data = usb_hub_handle_data; |
| 678 |
|
| 679 |
s->nb_ports = nb_ports; |
| 680 |
for(i = 0; i < s->nb_ports; i++) { |
| 681 |
port = &s->ports[i]; |
| 682 |
port->wPortStatus = PORT_STAT_POWER; |
| 683 |
port->wPortChange = 0;
|
| 684 |
port->port.attach = usb_hub_attach; |
| 685 |
port->port.opaque = s; |
| 686 |
port->port.index = i; |
| 687 |
usb_ports[i] = &port->port; |
| 688 |
} |
| 689 |
return (USBDevice *)s;
|
| 690 |
} |