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| 1 |
/*
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|---|---|
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* QEMU USB emulation
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*
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* Copyright (c) 2005 Fabrice Bellard
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*
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* 2008 Generic packet handler rewrite by Max Krasnyansky
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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 "qemu-common.h" |
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#include "hw/usb.h" |
| 28 |
#include "qemu/iov.h" |
| 29 |
#include "trace.h" |
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|
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void usb_attach(USBPort *port)
|
| 32 |
{
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| 33 |
USBDevice *dev = port->dev; |
| 34 |
|
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assert(dev != NULL);
|
| 36 |
assert(dev->attached); |
| 37 |
assert(dev->state == USB_STATE_NOTATTACHED); |
| 38 |
port->ops->attach(port); |
| 39 |
dev->state = USB_STATE_ATTACHED; |
| 40 |
usb_device_handle_attach(dev); |
| 41 |
} |
| 42 |
|
| 43 |
void usb_detach(USBPort *port)
|
| 44 |
{
|
| 45 |
USBDevice *dev = port->dev; |
| 46 |
|
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assert(dev != NULL);
|
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assert(dev->state != USB_STATE_NOTATTACHED); |
| 49 |
port->ops->detach(port); |
| 50 |
dev->state = USB_STATE_NOTATTACHED; |
| 51 |
} |
| 52 |
|
| 53 |
void usb_port_reset(USBPort *port)
|
| 54 |
{
|
| 55 |
USBDevice *dev = port->dev; |
| 56 |
|
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assert(dev != NULL);
|
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usb_detach(port); |
| 59 |
usb_attach(port); |
| 60 |
usb_device_reset(dev); |
| 61 |
} |
| 62 |
|
| 63 |
void usb_device_reset(USBDevice *dev)
|
| 64 |
{
|
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if (dev == NULL || !dev->attached) { |
| 66 |
return;
|
| 67 |
} |
| 68 |
dev->remote_wakeup = 0;
|
| 69 |
dev->addr = 0;
|
| 70 |
dev->state = USB_STATE_DEFAULT; |
| 71 |
usb_device_handle_reset(dev); |
| 72 |
} |
| 73 |
|
| 74 |
void usb_wakeup(USBEndpoint *ep, unsigned int stream) |
| 75 |
{
|
| 76 |
USBDevice *dev = ep->dev; |
| 77 |
USBBus *bus = usb_bus_from_device(dev); |
| 78 |
|
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if (dev->remote_wakeup && dev->port && dev->port->ops->wakeup) {
|
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dev->port->ops->wakeup(dev->port); |
| 81 |
} |
| 82 |
if (bus->ops->wakeup_endpoint) {
|
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bus->ops->wakeup_endpoint(bus, ep, stream); |
| 84 |
} |
| 85 |
} |
| 86 |
|
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/**********************/
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|
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/* generic USB device helpers (you are not forced to use them when
|
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writing your USB device driver, but they help handling the
|
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protocol)
|
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*/
|
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|
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#define SETUP_STATE_IDLE 0 |
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#define SETUP_STATE_SETUP 1 |
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#define SETUP_STATE_DATA 2 |
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#define SETUP_STATE_ACK 3 |
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#define SETUP_STATE_PARAM 4 |
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|
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static void do_token_setup(USBDevice *s, USBPacket *p) |
| 101 |
{
|
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int request, value, index;
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|
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if (p->iov.size != 8) { |
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p->status = USB_RET_STALL; |
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return;
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} |
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|
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usb_packet_copy(p, s->setup_buf, p->iov.size); |
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p->actual_length = 0;
|
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s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6]; |
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s->setup_index = 0;
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|
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request = (s->setup_buf[0] << 8) | s->setup_buf[1]; |
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value = (s->setup_buf[3] << 8) | s->setup_buf[2]; |
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index = (s->setup_buf[5] << 8) | s->setup_buf[4]; |
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|
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if (s->setup_buf[0] & USB_DIR_IN) { |
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usb_device_handle_control(s, p, request, value, index, |
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s->setup_len, s->data_buf); |
| 121 |
if (p->status == USB_RET_ASYNC) {
|
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s->setup_state = SETUP_STATE_SETUP; |
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} |
| 124 |
if (p->status != USB_RET_SUCCESS) {
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return;
|
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} |
| 127 |
|
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if (p->actual_length < s->setup_len) {
|
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s->setup_len = p->actual_length; |
| 130 |
} |
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s->setup_state = SETUP_STATE_DATA; |
| 132 |
} else {
|
| 133 |
if (s->setup_len > sizeof(s->data_buf)) { |
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fprintf(stderr, |
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"usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n",
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s->setup_len, sizeof(s->data_buf));
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p->status = USB_RET_STALL; |
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return;
|
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} |
| 140 |
if (s->setup_len == 0) |
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s->setup_state = SETUP_STATE_ACK; |
| 142 |
else
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s->setup_state = SETUP_STATE_DATA; |
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} |
| 145 |
|
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p->actual_length = 8;
|
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} |
| 148 |
|
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static void do_token_in(USBDevice *s, USBPacket *p) |
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{
|
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int request, value, index;
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|
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assert(p->ep->nr == 0);
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|
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request = (s->setup_buf[0] << 8) | s->setup_buf[1]; |
| 156 |
value = (s->setup_buf[3] << 8) | s->setup_buf[2]; |
| 157 |
index = (s->setup_buf[5] << 8) | s->setup_buf[4]; |
| 158 |
|
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switch(s->setup_state) {
|
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case SETUP_STATE_ACK:
|
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if (!(s->setup_buf[0] & USB_DIR_IN)) { |
| 162 |
usb_device_handle_control(s, p, request, value, index, |
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s->setup_len, s->data_buf); |
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if (p->status == USB_RET_ASYNC) {
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return;
|
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} |
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s->setup_state = SETUP_STATE_IDLE; |
| 168 |
p->actual_length = 0;
|
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} |
| 170 |
break;
|
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|
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case SETUP_STATE_DATA:
|
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if (s->setup_buf[0] & USB_DIR_IN) { |
| 174 |
int len = s->setup_len - s->setup_index;
|
| 175 |
if (len > p->iov.size) {
|
| 176 |
len = p->iov.size; |
| 177 |
} |
| 178 |
usb_packet_copy(p, s->data_buf + s->setup_index, len); |
| 179 |
s->setup_index += len; |
| 180 |
if (s->setup_index >= s->setup_len) {
|
| 181 |
s->setup_state = SETUP_STATE_ACK; |
| 182 |
} |
| 183 |
return;
|
| 184 |
} |
| 185 |
s->setup_state = SETUP_STATE_IDLE; |
| 186 |
p->status = USB_RET_STALL; |
| 187 |
break;
|
| 188 |
|
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default:
|
| 190 |
p->status = USB_RET_STALL; |
| 191 |
} |
| 192 |
} |
| 193 |
|
| 194 |
static void do_token_out(USBDevice *s, USBPacket *p) |
| 195 |
{
|
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assert(p->ep->nr == 0);
|
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|
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switch(s->setup_state) {
|
| 199 |
case SETUP_STATE_ACK:
|
| 200 |
if (s->setup_buf[0] & USB_DIR_IN) { |
| 201 |
s->setup_state = SETUP_STATE_IDLE; |
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/* transfer OK */
|
| 203 |
} else {
|
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/* ignore additional output */
|
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} |
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break;
|
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|
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case SETUP_STATE_DATA:
|
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if (!(s->setup_buf[0] & USB_DIR_IN)) { |
| 210 |
int len = s->setup_len - s->setup_index;
|
| 211 |
if (len > p->iov.size) {
|
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len = p->iov.size; |
| 213 |
} |
| 214 |
usb_packet_copy(p, s->data_buf + s->setup_index, len); |
| 215 |
s->setup_index += len; |
| 216 |
if (s->setup_index >= s->setup_len) {
|
| 217 |
s->setup_state = SETUP_STATE_ACK; |
| 218 |
} |
| 219 |
return;
|
| 220 |
} |
| 221 |
s->setup_state = SETUP_STATE_IDLE; |
| 222 |
p->status = USB_RET_STALL; |
| 223 |
break;
|
| 224 |
|
| 225 |
default:
|
| 226 |
p->status = USB_RET_STALL; |
| 227 |
} |
| 228 |
} |
| 229 |
|
| 230 |
static void do_parameter(USBDevice *s, USBPacket *p) |
| 231 |
{
|
| 232 |
int i, request, value, index;
|
| 233 |
|
| 234 |
for (i = 0; i < 8; i++) { |
| 235 |
s->setup_buf[i] = p->parameter >> (i*8);
|
| 236 |
} |
| 237 |
|
| 238 |
s->setup_state = SETUP_STATE_PARAM; |
| 239 |
s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6]; |
| 240 |
s->setup_index = 0;
|
| 241 |
|
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request = (s->setup_buf[0] << 8) | s->setup_buf[1]; |
| 243 |
value = (s->setup_buf[3] << 8) | s->setup_buf[2]; |
| 244 |
index = (s->setup_buf[5] << 8) | s->setup_buf[4]; |
| 245 |
|
| 246 |
if (s->setup_len > sizeof(s->data_buf)) { |
| 247 |
fprintf(stderr, |
| 248 |
"usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n",
|
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s->setup_len, sizeof(s->data_buf));
|
| 250 |
p->status = USB_RET_STALL; |
| 251 |
return;
|
| 252 |
} |
| 253 |
|
| 254 |
if (p->pid == USB_TOKEN_OUT) {
|
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usb_packet_copy(p, s->data_buf, s->setup_len); |
| 256 |
} |
| 257 |
|
| 258 |
usb_device_handle_control(s, p, request, value, index, |
| 259 |
s->setup_len, s->data_buf); |
| 260 |
if (p->status == USB_RET_ASYNC) {
|
| 261 |
return;
|
| 262 |
} |
| 263 |
|
| 264 |
if (p->actual_length < s->setup_len) {
|
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s->setup_len = p->actual_length; |
| 266 |
} |
| 267 |
if (p->pid == USB_TOKEN_IN) {
|
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p->actual_length = 0;
|
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usb_packet_copy(p, s->data_buf, s->setup_len); |
| 270 |
} |
| 271 |
} |
| 272 |
|
| 273 |
/* ctrl complete function for devices which use usb_generic_handle_packet and
|
| 274 |
may return USB_RET_ASYNC from their handle_control callback. Device code
|
| 275 |
which does this *must* call this function instead of the normal
|
| 276 |
usb_packet_complete to complete their async control packets. */
|
| 277 |
void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p)
|
| 278 |
{
|
| 279 |
if (p->status < 0) { |
| 280 |
s->setup_state = SETUP_STATE_IDLE; |
| 281 |
} |
| 282 |
|
| 283 |
switch (s->setup_state) {
|
| 284 |
case SETUP_STATE_SETUP:
|
| 285 |
if (p->actual_length < s->setup_len) {
|
| 286 |
s->setup_len = p->actual_length; |
| 287 |
} |
| 288 |
s->setup_state = SETUP_STATE_DATA; |
| 289 |
p->actual_length = 8;
|
| 290 |
break;
|
| 291 |
|
| 292 |
case SETUP_STATE_ACK:
|
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s->setup_state = SETUP_STATE_IDLE; |
| 294 |
p->actual_length = 0;
|
| 295 |
break;
|
| 296 |
|
| 297 |
case SETUP_STATE_PARAM:
|
| 298 |
if (p->actual_length < s->setup_len) {
|
| 299 |
s->setup_len = p->actual_length; |
| 300 |
} |
| 301 |
if (p->pid == USB_TOKEN_IN) {
|
| 302 |
p->actual_length = 0;
|
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usb_packet_copy(p, s->data_buf, s->setup_len); |
| 304 |
} |
| 305 |
break;
|
| 306 |
|
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default:
|
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break;
|
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} |
| 310 |
usb_packet_complete(s, p); |
| 311 |
} |
| 312 |
|
| 313 |
/* XXX: fix overflow */
|
| 314 |
int set_usb_string(uint8_t *buf, const char *str) |
| 315 |
{
|
| 316 |
int len, i;
|
| 317 |
uint8_t *q; |
| 318 |
|
| 319 |
q = buf; |
| 320 |
len = strlen(str); |
| 321 |
*q++ = 2 * len + 2; |
| 322 |
*q++ = 3;
|
| 323 |
for(i = 0; i < len; i++) { |
| 324 |
*q++ = str[i]; |
| 325 |
*q++ = 0;
|
| 326 |
} |
| 327 |
return q - buf;
|
| 328 |
} |
| 329 |
|
| 330 |
USBDevice *usb_find_device(USBPort *port, uint8_t addr) |
| 331 |
{
|
| 332 |
USBDevice *dev = port->dev; |
| 333 |
|
| 334 |
if (dev == NULL || !dev->attached || dev->state != USB_STATE_DEFAULT) { |
| 335 |
return NULL; |
| 336 |
} |
| 337 |
if (dev->addr == addr) {
|
| 338 |
return dev;
|
| 339 |
} |
| 340 |
return usb_device_find_device(dev, addr);
|
| 341 |
} |
| 342 |
|
| 343 |
static void usb_process_one(USBPacket *p) |
| 344 |
{
|
| 345 |
USBDevice *dev = p->ep->dev; |
| 346 |
|
| 347 |
/*
|
| 348 |
* Handlers expect status to be initialized to USB_RET_SUCCESS, but it
|
| 349 |
* can be USB_RET_NAK here from a previous usb_process_one() call,
|
| 350 |
* or USB_RET_ASYNC from going through usb_queue_one().
|
| 351 |
*/
|
| 352 |
p->status = USB_RET_SUCCESS; |
| 353 |
|
| 354 |
if (p->ep->nr == 0) { |
| 355 |
/* control pipe */
|
| 356 |
if (p->parameter) {
|
| 357 |
do_parameter(dev, p); |
| 358 |
return;
|
| 359 |
} |
| 360 |
switch (p->pid) {
|
| 361 |
case USB_TOKEN_SETUP:
|
| 362 |
do_token_setup(dev, p); |
| 363 |
break;
|
| 364 |
case USB_TOKEN_IN:
|
| 365 |
do_token_in(dev, p); |
| 366 |
break;
|
| 367 |
case USB_TOKEN_OUT:
|
| 368 |
do_token_out(dev, p); |
| 369 |
break;
|
| 370 |
default:
|
| 371 |
p->status = USB_RET_STALL; |
| 372 |
} |
| 373 |
} else {
|
| 374 |
/* data pipe */
|
| 375 |
usb_device_handle_data(dev, p); |
| 376 |
} |
| 377 |
} |
| 378 |
|
| 379 |
static void usb_queue_one(USBPacket *p) |
| 380 |
{
|
| 381 |
usb_packet_set_state(p, USB_PACKET_QUEUED); |
| 382 |
QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); |
| 383 |
p->status = USB_RET_ASYNC; |
| 384 |
} |
| 385 |
|
| 386 |
/* Hand over a packet to a device for processing. p->status ==
|
| 387 |
USB_RET_ASYNC indicates the processing isn't finished yet, the
|
| 388 |
driver will call usb_packet_complete() when done processing it. */
|
| 389 |
void usb_handle_packet(USBDevice *dev, USBPacket *p)
|
| 390 |
{
|
| 391 |
if (dev == NULL) { |
| 392 |
p->status = USB_RET_NODEV; |
| 393 |
return;
|
| 394 |
} |
| 395 |
assert(dev == p->ep->dev); |
| 396 |
assert(dev->state == USB_STATE_DEFAULT); |
| 397 |
usb_packet_check_state(p, USB_PACKET_SETUP); |
| 398 |
assert(p->ep != NULL);
|
| 399 |
|
| 400 |
/* Submitting a new packet clears halt */
|
| 401 |
if (p->ep->halted) {
|
| 402 |
assert(QTAILQ_EMPTY(&p->ep->queue)); |
| 403 |
p->ep->halted = false;
|
| 404 |
} |
| 405 |
|
| 406 |
if (QTAILQ_EMPTY(&p->ep->queue) || p->ep->pipeline) {
|
| 407 |
usb_process_one(p); |
| 408 |
if (p->status == USB_RET_ASYNC) {
|
| 409 |
/* hcd drivers cannot handle async for isoc */
|
| 410 |
assert(p->ep->type != USB_ENDPOINT_XFER_ISOC); |
| 411 |
/* using async for interrupt packets breaks migration */
|
| 412 |
assert(p->ep->type != USB_ENDPOINT_XFER_INT || |
| 413 |
(dev->flags & USB_DEV_FLAG_IS_HOST)); |
| 414 |
usb_packet_set_state(p, USB_PACKET_ASYNC); |
| 415 |
QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); |
| 416 |
} else if (p->status == USB_RET_ADD_TO_QUEUE) { |
| 417 |
usb_queue_one(p); |
| 418 |
} else {
|
| 419 |
/*
|
| 420 |
* When pipelining is enabled usb-devices must always return async,
|
| 421 |
* otherwise packets can complete out of order!
|
| 422 |
*/
|
| 423 |
assert(!p->ep->pipeline || QTAILQ_EMPTY(&p->ep->queue)); |
| 424 |
if (p->status != USB_RET_NAK) {
|
| 425 |
usb_packet_set_state(p, USB_PACKET_COMPLETE); |
| 426 |
} |
| 427 |
} |
| 428 |
} else {
|
| 429 |
usb_queue_one(p); |
| 430 |
} |
| 431 |
} |
| 432 |
|
| 433 |
void usb_packet_complete_one(USBDevice *dev, USBPacket *p)
|
| 434 |
{
|
| 435 |
USBEndpoint *ep = p->ep; |
| 436 |
|
| 437 |
assert(QTAILQ_FIRST(&ep->queue) == p); |
| 438 |
assert(p->status != USB_RET_ASYNC && p->status != USB_RET_NAK); |
| 439 |
|
| 440 |
if (p->status != USB_RET_SUCCESS ||
|
| 441 |
(p->short_not_ok && (p->actual_length < p->iov.size))) {
|
| 442 |
ep->halted = true;
|
| 443 |
} |
| 444 |
usb_packet_set_state(p, USB_PACKET_COMPLETE); |
| 445 |
QTAILQ_REMOVE(&ep->queue, p, queue); |
| 446 |
dev->port->ops->complete(dev->port, p); |
| 447 |
} |
| 448 |
|
| 449 |
/* Notify the controller that an async packet is complete. This should only
|
| 450 |
be called for packets previously deferred by returning USB_RET_ASYNC from
|
| 451 |
handle_packet. */
|
| 452 |
void usb_packet_complete(USBDevice *dev, USBPacket *p)
|
| 453 |
{
|
| 454 |
USBEndpoint *ep = p->ep; |
| 455 |
|
| 456 |
usb_packet_check_state(p, USB_PACKET_ASYNC); |
| 457 |
usb_packet_complete_one(dev, p); |
| 458 |
|
| 459 |
while (!QTAILQ_EMPTY(&ep->queue)) {
|
| 460 |
p = QTAILQ_FIRST(&ep->queue); |
| 461 |
if (ep->halted) {
|
| 462 |
/* Empty the queue on a halt */
|
| 463 |
p->status = USB_RET_REMOVE_FROM_QUEUE; |
| 464 |
dev->port->ops->complete(dev->port, p); |
| 465 |
continue;
|
| 466 |
} |
| 467 |
if (p->state == USB_PACKET_ASYNC) {
|
| 468 |
break;
|
| 469 |
} |
| 470 |
usb_packet_check_state(p, USB_PACKET_QUEUED); |
| 471 |
usb_process_one(p); |
| 472 |
if (p->status == USB_RET_ASYNC) {
|
| 473 |
usb_packet_set_state(p, USB_PACKET_ASYNC); |
| 474 |
break;
|
| 475 |
} |
| 476 |
usb_packet_complete_one(ep->dev, p); |
| 477 |
} |
| 478 |
} |
| 479 |
|
| 480 |
/* Cancel an active packet. The packed must have been deferred by
|
| 481 |
returning USB_RET_ASYNC from handle_packet, and not yet
|
| 482 |
completed. */
|
| 483 |
void usb_cancel_packet(USBPacket * p)
|
| 484 |
{
|
| 485 |
bool callback = (p->state == USB_PACKET_ASYNC);
|
| 486 |
assert(usb_packet_is_inflight(p)); |
| 487 |
usb_packet_set_state(p, USB_PACKET_CANCELED); |
| 488 |
QTAILQ_REMOVE(&p->ep->queue, p, queue); |
| 489 |
if (callback) {
|
| 490 |
usb_device_cancel_packet(p->ep->dev, p); |
| 491 |
} |
| 492 |
} |
| 493 |
|
| 494 |
|
| 495 |
void usb_packet_init(USBPacket *p)
|
| 496 |
{
|
| 497 |
qemu_iovec_init(&p->iov, 1);
|
| 498 |
} |
| 499 |
|
| 500 |
static const char *usb_packet_state_name(USBPacketState state) |
| 501 |
{
|
| 502 |
static const char *name[] = { |
| 503 |
[USB_PACKET_UNDEFINED] = "undef",
|
| 504 |
[USB_PACKET_SETUP] = "setup",
|
| 505 |
[USB_PACKET_QUEUED] = "queued",
|
| 506 |
[USB_PACKET_ASYNC] = "async",
|
| 507 |
[USB_PACKET_COMPLETE] = "complete",
|
| 508 |
[USB_PACKET_CANCELED] = "canceled",
|
| 509 |
}; |
| 510 |
if (state < ARRAY_SIZE(name)) {
|
| 511 |
return name[state];
|
| 512 |
} |
| 513 |
return "INVALID"; |
| 514 |
} |
| 515 |
|
| 516 |
void usb_packet_check_state(USBPacket *p, USBPacketState expected)
|
| 517 |
{
|
| 518 |
USBDevice *dev; |
| 519 |
USBBus *bus; |
| 520 |
|
| 521 |
if (p->state == expected) {
|
| 522 |
return;
|
| 523 |
} |
| 524 |
dev = p->ep->dev; |
| 525 |
bus = usb_bus_from_device(dev); |
| 526 |
trace_usb_packet_state_fault(bus->busnr, dev->port->path, p->ep->nr, p, |
| 527 |
usb_packet_state_name(p->state), |
| 528 |
usb_packet_state_name(expected)); |
| 529 |
assert(!"usb packet state check failed");
|
| 530 |
} |
| 531 |
|
| 532 |
void usb_packet_set_state(USBPacket *p, USBPacketState state)
|
| 533 |
{
|
| 534 |
if (p->ep) {
|
| 535 |
USBDevice *dev = p->ep->dev; |
| 536 |
USBBus *bus = usb_bus_from_device(dev); |
| 537 |
trace_usb_packet_state_change(bus->busnr, dev->port->path, p->ep->nr, p, |
| 538 |
usb_packet_state_name(p->state), |
| 539 |
usb_packet_state_name(state)); |
| 540 |
} else {
|
| 541 |
trace_usb_packet_state_change(-1, "", -1, p, |
| 542 |
usb_packet_state_name(p->state), |
| 543 |
usb_packet_state_name(state)); |
| 544 |
} |
| 545 |
p->state = state; |
| 546 |
} |
| 547 |
|
| 548 |
void usb_packet_setup(USBPacket *p, int pid, |
| 549 |
USBEndpoint *ep, unsigned int stream, |
| 550 |
uint64_t id, bool short_not_ok, bool int_req) |
| 551 |
{
|
| 552 |
assert(!usb_packet_is_inflight(p)); |
| 553 |
assert(p->iov.iov != NULL);
|
| 554 |
p->id = id; |
| 555 |
p->pid = pid; |
| 556 |
p->ep = ep; |
| 557 |
p->stream = stream; |
| 558 |
p->status = USB_RET_SUCCESS; |
| 559 |
p->actual_length = 0;
|
| 560 |
p->parameter = 0;
|
| 561 |
p->short_not_ok = short_not_ok; |
| 562 |
p->int_req = int_req; |
| 563 |
p->combined = NULL;
|
| 564 |
qemu_iovec_reset(&p->iov); |
| 565 |
usb_packet_set_state(p, USB_PACKET_SETUP); |
| 566 |
} |
| 567 |
|
| 568 |
void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len) |
| 569 |
{
|
| 570 |
qemu_iovec_add(&p->iov, ptr, len); |
| 571 |
} |
| 572 |
|
| 573 |
void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes) |
| 574 |
{
|
| 575 |
QEMUIOVector *iov = p->combined ? &p->combined->iov : &p->iov; |
| 576 |
|
| 577 |
assert(p->actual_length >= 0);
|
| 578 |
assert(p->actual_length + bytes <= iov->size); |
| 579 |
switch (p->pid) {
|
| 580 |
case USB_TOKEN_SETUP:
|
| 581 |
case USB_TOKEN_OUT:
|
| 582 |
iov_to_buf(iov->iov, iov->niov, p->actual_length, ptr, bytes); |
| 583 |
break;
|
| 584 |
case USB_TOKEN_IN:
|
| 585 |
iov_from_buf(iov->iov, iov->niov, p->actual_length, ptr, bytes); |
| 586 |
break;
|
| 587 |
default:
|
| 588 |
fprintf(stderr, "%s: invalid pid: %x\n", __func__, p->pid);
|
| 589 |
abort(); |
| 590 |
} |
| 591 |
p->actual_length += bytes; |
| 592 |
} |
| 593 |
|
| 594 |
void usb_packet_skip(USBPacket *p, size_t bytes)
|
| 595 |
{
|
| 596 |
QEMUIOVector *iov = p->combined ? &p->combined->iov : &p->iov; |
| 597 |
|
| 598 |
assert(p->actual_length >= 0);
|
| 599 |
assert(p->actual_length + bytes <= iov->size); |
| 600 |
if (p->pid == USB_TOKEN_IN) {
|
| 601 |
iov_memset(iov->iov, iov->niov, p->actual_length, 0, bytes);
|
| 602 |
} |
| 603 |
p->actual_length += bytes; |
| 604 |
} |
| 605 |
|
| 606 |
size_t usb_packet_size(USBPacket *p) |
| 607 |
{
|
| 608 |
return p->combined ? p->combined->iov.size : p->iov.size;
|
| 609 |
} |
| 610 |
|
| 611 |
void usb_packet_cleanup(USBPacket *p)
|
| 612 |
{
|
| 613 |
assert(!usb_packet_is_inflight(p)); |
| 614 |
qemu_iovec_destroy(&p->iov); |
| 615 |
} |
| 616 |
|
| 617 |
void usb_ep_reset(USBDevice *dev)
|
| 618 |
{
|
| 619 |
int ep;
|
| 620 |
|
| 621 |
dev->ep_ctl.nr = 0;
|
| 622 |
dev->ep_ctl.type = USB_ENDPOINT_XFER_CONTROL; |
| 623 |
dev->ep_ctl.ifnum = 0;
|
| 624 |
dev->ep_ctl.dev = dev; |
| 625 |
dev->ep_ctl.pipeline = false;
|
| 626 |
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { |
| 627 |
dev->ep_in[ep].nr = ep + 1;
|
| 628 |
dev->ep_out[ep].nr = ep + 1;
|
| 629 |
dev->ep_in[ep].pid = USB_TOKEN_IN; |
| 630 |
dev->ep_out[ep].pid = USB_TOKEN_OUT; |
| 631 |
dev->ep_in[ep].type = USB_ENDPOINT_XFER_INVALID; |
| 632 |
dev->ep_out[ep].type = USB_ENDPOINT_XFER_INVALID; |
| 633 |
dev->ep_in[ep].ifnum = USB_INTERFACE_INVALID; |
| 634 |
dev->ep_out[ep].ifnum = USB_INTERFACE_INVALID; |
| 635 |
dev->ep_in[ep].dev = dev; |
| 636 |
dev->ep_out[ep].dev = dev; |
| 637 |
dev->ep_in[ep].pipeline = false;
|
| 638 |
dev->ep_out[ep].pipeline = false;
|
| 639 |
} |
| 640 |
} |
| 641 |
|
| 642 |
void usb_ep_init(USBDevice *dev)
|
| 643 |
{
|
| 644 |
int ep;
|
| 645 |
|
| 646 |
usb_ep_reset(dev); |
| 647 |
QTAILQ_INIT(&dev->ep_ctl.queue); |
| 648 |
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { |
| 649 |
QTAILQ_INIT(&dev->ep_in[ep].queue); |
| 650 |
QTAILQ_INIT(&dev->ep_out[ep].queue); |
| 651 |
} |
| 652 |
} |
| 653 |
|
| 654 |
void usb_ep_dump(USBDevice *dev)
|
| 655 |
{
|
| 656 |
static const char *tname[] = { |
| 657 |
[USB_ENDPOINT_XFER_CONTROL] = "control",
|
| 658 |
[USB_ENDPOINT_XFER_ISOC] = "isoc",
|
| 659 |
[USB_ENDPOINT_XFER_BULK] = "bulk",
|
| 660 |
[USB_ENDPOINT_XFER_INT] = "int",
|
| 661 |
}; |
| 662 |
int ifnum, ep, first;
|
| 663 |
|
| 664 |
fprintf(stderr, "Device \"%s\", config %d\n",
|
| 665 |
dev->product_desc, dev->configuration); |
| 666 |
for (ifnum = 0; ifnum < 16; ifnum++) { |
| 667 |
first = 1;
|
| 668 |
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { |
| 669 |
if (dev->ep_in[ep].type != USB_ENDPOINT_XFER_INVALID &&
|
| 670 |
dev->ep_in[ep].ifnum == ifnum) {
|
| 671 |
if (first) {
|
| 672 |
first = 0;
|
| 673 |
fprintf(stderr, " Interface %d, alternative %d\n",
|
| 674 |
ifnum, dev->altsetting[ifnum]); |
| 675 |
} |
| 676 |
fprintf(stderr, " Endpoint %d, IN, %s, %d max\n", ep,
|
| 677 |
tname[dev->ep_in[ep].type], |
| 678 |
dev->ep_in[ep].max_packet_size); |
| 679 |
} |
| 680 |
if (dev->ep_out[ep].type != USB_ENDPOINT_XFER_INVALID &&
|
| 681 |
dev->ep_out[ep].ifnum == ifnum) {
|
| 682 |
if (first) {
|
| 683 |
first = 0;
|
| 684 |
fprintf(stderr, " Interface %d, alternative %d\n",
|
| 685 |
ifnum, dev->altsetting[ifnum]); |
| 686 |
} |
| 687 |
fprintf(stderr, " Endpoint %d, OUT, %s, %d max\n", ep,
|
| 688 |
tname[dev->ep_out[ep].type], |
| 689 |
dev->ep_out[ep].max_packet_size); |
| 690 |
} |
| 691 |
} |
| 692 |
} |
| 693 |
fprintf(stderr, "--\n");
|
| 694 |
} |
| 695 |
|
| 696 |
struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep) |
| 697 |
{
|
| 698 |
struct USBEndpoint *eps;
|
| 699 |
|
| 700 |
if (dev == NULL) { |
| 701 |
return NULL; |
| 702 |
} |
| 703 |
eps = (pid == USB_TOKEN_IN) ? dev->ep_in : dev->ep_out; |
| 704 |
if (ep == 0) { |
| 705 |
return &dev->ep_ctl;
|
| 706 |
} |
| 707 |
assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT); |
| 708 |
assert(ep > 0 && ep <= USB_MAX_ENDPOINTS);
|
| 709 |
return eps + ep - 1; |
| 710 |
} |
| 711 |
|
| 712 |
uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep) |
| 713 |
{
|
| 714 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
| 715 |
return uep->type;
|
| 716 |
} |
| 717 |
|
| 718 |
void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type) |
| 719 |
{
|
| 720 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
| 721 |
uep->type = type; |
| 722 |
} |
| 723 |
|
| 724 |
uint8_t usb_ep_get_ifnum(USBDevice *dev, int pid, int ep) |
| 725 |
{
|
| 726 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
| 727 |
return uep->ifnum;
|
| 728 |
} |
| 729 |
|
| 730 |
void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum) |
| 731 |
{
|
| 732 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
| 733 |
uep->ifnum = ifnum; |
| 734 |
} |
| 735 |
|
| 736 |
void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep, |
| 737 |
uint16_t raw) |
| 738 |
{
|
| 739 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
| 740 |
int size, microframes;
|
| 741 |
|
| 742 |
size = raw & 0x7ff;
|
| 743 |
switch ((raw >> 11) & 3) { |
| 744 |
case 1: |
| 745 |
microframes = 2;
|
| 746 |
break;
|
| 747 |
case 2: |
| 748 |
microframes = 3;
|
| 749 |
break;
|
| 750 |
default:
|
| 751 |
microframes = 1;
|
| 752 |
break;
|
| 753 |
} |
| 754 |
uep->max_packet_size = size * microframes; |
| 755 |
} |
| 756 |
|
| 757 |
int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep) |
| 758 |
{
|
| 759 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
| 760 |
return uep->max_packet_size;
|
| 761 |
} |
| 762 |
|
| 763 |
void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled) |
| 764 |
{
|
| 765 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
| 766 |
uep->pipeline = enabled; |
| 767 |
} |
| 768 |
|
| 769 |
void usb_ep_set_halted(USBDevice *dev, int pid, int ep, bool halted) |
| 770 |
{
|
| 771 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
| 772 |
uep->halted = halted; |
| 773 |
} |
| 774 |
|
| 775 |
USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep, |
| 776 |
uint64_t id) |
| 777 |
{
|
| 778 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
| 779 |
USBPacket *p; |
| 780 |
|
| 781 |
QTAILQ_FOREACH(p, &uep->queue, queue) {
|
| 782 |
if (p->id == id) {
|
| 783 |
return p;
|
| 784 |
} |
| 785 |
} |
| 786 |
|
| 787 |
return NULL; |
| 788 |
} |