772 lines
22 KiB
C
772 lines
22 KiB
C
/*
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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"
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#include "qemu/iov.h"
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#include "trace.h"
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void usb_attach(USBPort *port)
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{
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USBDevice *dev = port->dev;
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assert(dev != NULL);
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assert(dev->attached);
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assert(dev->state == USB_STATE_NOTATTACHED);
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port->ops->attach(port);
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dev->state = USB_STATE_ATTACHED;
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usb_device_handle_attach(dev);
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}
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void usb_detach(USBPort *port)
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{
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USBDevice *dev = port->dev;
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assert(dev != NULL);
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assert(dev->state != USB_STATE_NOTATTACHED);
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port->ops->detach(port);
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dev->state = USB_STATE_NOTATTACHED;
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}
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void usb_port_reset(USBPort *port)
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{
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USBDevice *dev = port->dev;
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assert(dev != NULL);
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usb_detach(port);
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usb_attach(port);
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usb_device_reset(dev);
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}
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void usb_device_reset(USBDevice *dev)
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{
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if (dev == NULL || !dev->attached) {
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return;
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}
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dev->remote_wakeup = 0;
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dev->addr = 0;
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dev->state = USB_STATE_DEFAULT;
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usb_device_handle_reset(dev);
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}
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void usb_wakeup(USBEndpoint *ep)
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{
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USBDevice *dev = ep->dev;
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USBBus *bus = usb_bus_from_device(dev);
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if (dev->remote_wakeup && dev->port && dev->port->ops->wakeup) {
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dev->port->ops->wakeup(dev->port);
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}
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if (bus->ops->wakeup_endpoint) {
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bus->ops->wakeup_endpoint(bus, ep);
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}
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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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#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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static void do_token_setup(USBDevice *s, USBPacket *p)
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{
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int request, value, index;
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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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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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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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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);
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if (p->status == USB_RET_ASYNC) {
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s->setup_state = SETUP_STATE_SETUP;
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}
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if (p->status != USB_RET_SUCCESS) {
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return;
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}
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if (p->actual_length < s->setup_len) {
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s->setup_len = p->actual_length;
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}
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s->setup_state = SETUP_STATE_DATA;
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} else {
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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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}
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if (s->setup_len == 0)
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s->setup_state = SETUP_STATE_ACK;
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else
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s->setup_state = SETUP_STATE_DATA;
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}
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p->actual_length = 8;
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}
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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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assert(p->ep->nr == 0);
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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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switch(s->setup_state) {
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case SETUP_STATE_ACK:
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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);
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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;
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p->actual_length = 0;
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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) {
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int len = s->setup_len - s->setup_index;
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if (len > p->iov.size) {
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len = p->iov.size;
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}
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usb_packet_copy(p, s->data_buf + s->setup_index, len);
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s->setup_index += len;
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if (s->setup_index >= s->setup_len) {
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s->setup_state = SETUP_STATE_ACK;
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}
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return;
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}
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s->setup_state = SETUP_STATE_IDLE;
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p->status = USB_RET_STALL;
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break;
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default:
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p->status = USB_RET_STALL;
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}
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}
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static void do_token_out(USBDevice *s, USBPacket *p)
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{
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assert(p->ep->nr == 0);
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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) {
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s->setup_state = SETUP_STATE_IDLE;
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/* transfer OK */
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} else {
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/* ignore additional output */
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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)) {
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int len = s->setup_len - s->setup_index;
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if (len > p->iov.size) {
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len = p->iov.size;
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}
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usb_packet_copy(p, s->data_buf + s->setup_index, len);
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s->setup_index += len;
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if (s->setup_index >= s->setup_len) {
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s->setup_state = SETUP_STATE_ACK;
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}
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return;
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}
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s->setup_state = SETUP_STATE_IDLE;
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p->status = USB_RET_STALL;
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break;
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default:
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p->status = USB_RET_STALL;
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}
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}
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static void do_parameter(USBDevice *s, USBPacket *p)
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{
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int i, request, value, index;
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for (i = 0; i < 8; i++) {
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s->setup_buf[i] = p->parameter >> (i*8);
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}
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s->setup_state = SETUP_STATE_PARAM;
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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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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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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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}
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if (p->pid == USB_TOKEN_OUT) {
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usb_packet_copy(p, s->data_buf, s->setup_len);
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}
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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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if (p->actual_length < s->setup_len) {
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s->setup_len = p->actual_length;
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}
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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);
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}
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}
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/* ctrl complete function for devices which use usb_generic_handle_packet and
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may return USB_RET_ASYNC from their handle_control callback. Device code
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which does this *must* call this function instead of the normal
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usb_packet_complete to complete their async control packets. */
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void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p)
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{
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if (p->status < 0) {
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s->setup_state = SETUP_STATE_IDLE;
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}
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switch (s->setup_state) {
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case SETUP_STATE_SETUP:
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if (p->actual_length < s->setup_len) {
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s->setup_len = p->actual_length;
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}
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s->setup_state = SETUP_STATE_DATA;
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p->actual_length = 8;
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break;
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case SETUP_STATE_ACK:
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s->setup_state = SETUP_STATE_IDLE;
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p->actual_length = 0;
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break;
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case SETUP_STATE_PARAM:
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if (p->actual_length < s->setup_len) {
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s->setup_len = p->actual_length;
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}
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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);
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}
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break;
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default:
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break;
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}
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usb_packet_complete(s, p);
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}
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/* XXX: fix overflow */
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int set_usb_string(uint8_t *buf, const char *str)
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{
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int len, i;
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uint8_t *q;
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q = buf;
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len = strlen(str);
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*q++ = 2 * len + 2;
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*q++ = 3;
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for(i = 0; i < len; i++) {
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*q++ = str[i];
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*q++ = 0;
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}
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return q - buf;
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}
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USBDevice *usb_find_device(USBPort *port, uint8_t addr)
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{
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USBDevice *dev = port->dev;
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if (dev == NULL || !dev->attached || dev->state != USB_STATE_DEFAULT) {
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return NULL;
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}
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if (dev->addr == addr) {
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return dev;
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}
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return usb_device_find_device(dev, addr);
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}
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static void usb_process_one(USBPacket *p)
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{
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USBDevice *dev = p->ep->dev;
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/*
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* Handlers expect status to be initialized to USB_RET_SUCCESS, but it
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* can be USB_RET_NAK here from a previous usb_process_one() call,
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* or USB_RET_ASYNC from going through usb_queue_one().
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*/
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p->status = USB_RET_SUCCESS;
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if (p->ep->nr == 0) {
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/* control pipe */
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if (p->parameter) {
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do_parameter(dev, p);
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return;
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}
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switch (p->pid) {
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case USB_TOKEN_SETUP:
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do_token_setup(dev, p);
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break;
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case USB_TOKEN_IN:
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do_token_in(dev, p);
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break;
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case USB_TOKEN_OUT:
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do_token_out(dev, p);
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break;
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default:
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p->status = USB_RET_STALL;
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}
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} else {
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/* data pipe */
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usb_device_handle_data(dev, p);
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}
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}
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static void usb_queue_one(USBPacket *p)
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{
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usb_packet_set_state(p, USB_PACKET_QUEUED);
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QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue);
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p->status = USB_RET_ASYNC;
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}
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/* Hand over a packet to a device for processing. p->status ==
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USB_RET_ASYNC indicates the processing isn't finished yet, the
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driver will call usb_packet_complete() when done processing it. */
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void usb_handle_packet(USBDevice *dev, USBPacket *p)
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{
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if (dev == NULL) {
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p->status = USB_RET_NODEV;
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return;
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}
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assert(dev == p->ep->dev);
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assert(dev->state == USB_STATE_DEFAULT);
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usb_packet_check_state(p, USB_PACKET_SETUP);
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assert(p->ep != NULL);
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/* Submitting a new packet clears halt */
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if (p->ep->halted) {
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assert(QTAILQ_EMPTY(&p->ep->queue));
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p->ep->halted = false;
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}
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if (QTAILQ_EMPTY(&p->ep->queue) || p->ep->pipeline) {
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usb_process_one(p);
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if (p->status == USB_RET_ASYNC) {
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/* hcd drivers cannot handle async for isoc */
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assert(p->ep->type != USB_ENDPOINT_XFER_ISOC);
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/* using async for interrupt packets breaks migration */
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assert(p->ep->type != USB_ENDPOINT_XFER_INT ||
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(dev->flags & USB_DEV_FLAG_IS_HOST));
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usb_packet_set_state(p, USB_PACKET_ASYNC);
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QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue);
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} else if (p->status == USB_RET_ADD_TO_QUEUE) {
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usb_queue_one(p);
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} else {
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/*
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* When pipelining is enabled usb-devices must always return async,
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* otherwise packets can complete out of order!
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*/
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assert(!p->ep->pipeline || QTAILQ_EMPTY(&p->ep->queue));
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if (p->status != USB_RET_NAK) {
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usb_packet_set_state(p, USB_PACKET_COMPLETE);
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}
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}
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} else {
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usb_queue_one(p);
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}
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}
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void usb_packet_complete_one(USBDevice *dev, USBPacket *p)
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{
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USBEndpoint *ep = p->ep;
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assert(QTAILQ_FIRST(&ep->queue) == p);
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assert(p->status != USB_RET_ASYNC && p->status != USB_RET_NAK);
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if (p->status != USB_RET_SUCCESS ||
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(p->short_not_ok && (p->actual_length < p->iov.size))) {
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ep->halted = true;
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}
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usb_packet_set_state(p, USB_PACKET_COMPLETE);
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QTAILQ_REMOVE(&ep->queue, p, queue);
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dev->port->ops->complete(dev->port, p);
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}
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/* Notify the controller that an async packet is complete. This should only
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be called for packets previously deferred by returning USB_RET_ASYNC from
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handle_packet. */
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void usb_packet_complete(USBDevice *dev, USBPacket *p)
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{
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USBEndpoint *ep = p->ep;
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usb_packet_check_state(p, USB_PACKET_ASYNC);
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usb_packet_complete_one(dev, p);
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while (!QTAILQ_EMPTY(&ep->queue)) {
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p = QTAILQ_FIRST(&ep->queue);
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if (ep->halted) {
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/* Empty the queue on a halt */
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p->status = USB_RET_REMOVE_FROM_QUEUE;
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dev->port->ops->complete(dev->port, p);
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continue;
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}
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if (p->state == USB_PACKET_ASYNC) {
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break;
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}
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usb_packet_check_state(p, USB_PACKET_QUEUED);
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usb_process_one(p);
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if (p->status == USB_RET_ASYNC) {
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usb_packet_set_state(p, USB_PACKET_ASYNC);
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break;
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}
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usb_packet_complete_one(ep->dev, p);
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}
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}
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/* Cancel an active packet. The packed must have been deferred by
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returning USB_RET_ASYNC from handle_packet, and not yet
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completed. */
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void usb_cancel_packet(USBPacket * p)
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{
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bool callback = (p->state == USB_PACKET_ASYNC);
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assert(usb_packet_is_inflight(p));
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usb_packet_set_state(p, USB_PACKET_CANCELED);
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QTAILQ_REMOVE(&p->ep->queue, p, queue);
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if (callback) {
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usb_device_cancel_packet(p->ep->dev, p);
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}
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}
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void usb_packet_init(USBPacket *p)
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{
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qemu_iovec_init(&p->iov, 1);
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}
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static const char *usb_packet_state_name(USBPacketState state)
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{
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static const char *name[] = {
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[USB_PACKET_UNDEFINED] = "undef",
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[USB_PACKET_SETUP] = "setup",
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[USB_PACKET_QUEUED] = "queued",
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[USB_PACKET_ASYNC] = "async",
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[USB_PACKET_COMPLETE] = "complete",
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[USB_PACKET_CANCELED] = "canceled",
|
|
};
|
|
if (state < ARRAY_SIZE(name)) {
|
|
return name[state];
|
|
}
|
|
return "INVALID";
|
|
}
|
|
|
|
void usb_packet_check_state(USBPacket *p, USBPacketState expected)
|
|
{
|
|
USBDevice *dev;
|
|
USBBus *bus;
|
|
|
|
if (p->state == expected) {
|
|
return;
|
|
}
|
|
dev = p->ep->dev;
|
|
bus = usb_bus_from_device(dev);
|
|
trace_usb_packet_state_fault(bus->busnr, dev->port->path, p->ep->nr, p,
|
|
usb_packet_state_name(p->state),
|
|
usb_packet_state_name(expected));
|
|
assert(!"usb packet state check failed");
|
|
}
|
|
|
|
void usb_packet_set_state(USBPacket *p, USBPacketState state)
|
|
{
|
|
if (p->ep) {
|
|
USBDevice *dev = p->ep->dev;
|
|
USBBus *bus = usb_bus_from_device(dev);
|
|
trace_usb_packet_state_change(bus->busnr, dev->port->path, p->ep->nr, p,
|
|
usb_packet_state_name(p->state),
|
|
usb_packet_state_name(state));
|
|
} else {
|
|
trace_usb_packet_state_change(-1, "", -1, p,
|
|
usb_packet_state_name(p->state),
|
|
usb_packet_state_name(state));
|
|
}
|
|
p->state = state;
|
|
}
|
|
|
|
void usb_packet_setup(USBPacket *p, int pid, USBEndpoint *ep, uint64_t id,
|
|
bool short_not_ok, bool int_req)
|
|
{
|
|
assert(!usb_packet_is_inflight(p));
|
|
assert(p->iov.iov != NULL);
|
|
p->id = id;
|
|
p->pid = pid;
|
|
p->ep = ep;
|
|
p->status = USB_RET_SUCCESS;
|
|
p->actual_length = 0;
|
|
p->parameter = 0;
|
|
p->short_not_ok = short_not_ok;
|
|
p->int_req = int_req;
|
|
p->combined = NULL;
|
|
qemu_iovec_reset(&p->iov);
|
|
usb_packet_set_state(p, USB_PACKET_SETUP);
|
|
}
|
|
|
|
void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len)
|
|
{
|
|
qemu_iovec_add(&p->iov, ptr, len);
|
|
}
|
|
|
|
void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes)
|
|
{
|
|
assert(p->actual_length >= 0);
|
|
assert(p->actual_length + bytes <= p->iov.size);
|
|
switch (p->pid) {
|
|
case USB_TOKEN_SETUP:
|
|
case USB_TOKEN_OUT:
|
|
iov_to_buf(p->iov.iov, p->iov.niov, p->actual_length, ptr, bytes);
|
|
break;
|
|
case USB_TOKEN_IN:
|
|
iov_from_buf(p->iov.iov, p->iov.niov, p->actual_length, ptr, bytes);
|
|
break;
|
|
default:
|
|
fprintf(stderr, "%s: invalid pid: %x\n", __func__, p->pid);
|
|
abort();
|
|
}
|
|
p->actual_length += bytes;
|
|
}
|
|
|
|
void usb_packet_skip(USBPacket *p, size_t bytes)
|
|
{
|
|
assert(p->actual_length >= 0);
|
|
assert(p->actual_length + bytes <= p->iov.size);
|
|
if (p->pid == USB_TOKEN_IN) {
|
|
iov_memset(p->iov.iov, p->iov.niov, p->actual_length, 0, bytes);
|
|
}
|
|
p->actual_length += bytes;
|
|
}
|
|
|
|
void usb_packet_cleanup(USBPacket *p)
|
|
{
|
|
assert(!usb_packet_is_inflight(p));
|
|
qemu_iovec_destroy(&p->iov);
|
|
}
|
|
|
|
void usb_ep_reset(USBDevice *dev)
|
|
{
|
|
int ep;
|
|
|
|
dev->ep_ctl.nr = 0;
|
|
dev->ep_ctl.type = USB_ENDPOINT_XFER_CONTROL;
|
|
dev->ep_ctl.ifnum = 0;
|
|
dev->ep_ctl.dev = dev;
|
|
dev->ep_ctl.pipeline = false;
|
|
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) {
|
|
dev->ep_in[ep].nr = ep + 1;
|
|
dev->ep_out[ep].nr = ep + 1;
|
|
dev->ep_in[ep].pid = USB_TOKEN_IN;
|
|
dev->ep_out[ep].pid = USB_TOKEN_OUT;
|
|
dev->ep_in[ep].type = USB_ENDPOINT_XFER_INVALID;
|
|
dev->ep_out[ep].type = USB_ENDPOINT_XFER_INVALID;
|
|
dev->ep_in[ep].ifnum = USB_INTERFACE_INVALID;
|
|
dev->ep_out[ep].ifnum = USB_INTERFACE_INVALID;
|
|
dev->ep_in[ep].dev = dev;
|
|
dev->ep_out[ep].dev = dev;
|
|
dev->ep_in[ep].pipeline = false;
|
|
dev->ep_out[ep].pipeline = false;
|
|
}
|
|
}
|
|
|
|
void usb_ep_init(USBDevice *dev)
|
|
{
|
|
int ep;
|
|
|
|
usb_ep_reset(dev);
|
|
QTAILQ_INIT(&dev->ep_ctl.queue);
|
|
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) {
|
|
QTAILQ_INIT(&dev->ep_in[ep].queue);
|
|
QTAILQ_INIT(&dev->ep_out[ep].queue);
|
|
}
|
|
}
|
|
|
|
void usb_ep_dump(USBDevice *dev)
|
|
{
|
|
static const char *tname[] = {
|
|
[USB_ENDPOINT_XFER_CONTROL] = "control",
|
|
[USB_ENDPOINT_XFER_ISOC] = "isoc",
|
|
[USB_ENDPOINT_XFER_BULK] = "bulk",
|
|
[USB_ENDPOINT_XFER_INT] = "int",
|
|
};
|
|
int ifnum, ep, first;
|
|
|
|
fprintf(stderr, "Device \"%s\", config %d\n",
|
|
dev->product_desc, dev->configuration);
|
|
for (ifnum = 0; ifnum < 16; ifnum++) {
|
|
first = 1;
|
|
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) {
|
|
if (dev->ep_in[ep].type != USB_ENDPOINT_XFER_INVALID &&
|
|
dev->ep_in[ep].ifnum == ifnum) {
|
|
if (first) {
|
|
first = 0;
|
|
fprintf(stderr, " Interface %d, alternative %d\n",
|
|
ifnum, dev->altsetting[ifnum]);
|
|
}
|
|
fprintf(stderr, " Endpoint %d, IN, %s, %d max\n", ep,
|
|
tname[dev->ep_in[ep].type],
|
|
dev->ep_in[ep].max_packet_size);
|
|
}
|
|
if (dev->ep_out[ep].type != USB_ENDPOINT_XFER_INVALID &&
|
|
dev->ep_out[ep].ifnum == ifnum) {
|
|
if (first) {
|
|
first = 0;
|
|
fprintf(stderr, " Interface %d, alternative %d\n",
|
|
ifnum, dev->altsetting[ifnum]);
|
|
}
|
|
fprintf(stderr, " Endpoint %d, OUT, %s, %d max\n", ep,
|
|
tname[dev->ep_out[ep].type],
|
|
dev->ep_out[ep].max_packet_size);
|
|
}
|
|
}
|
|
}
|
|
fprintf(stderr, "--\n");
|
|
}
|
|
|
|
struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep)
|
|
{
|
|
struct USBEndpoint *eps;
|
|
|
|
if (dev == NULL) {
|
|
return NULL;
|
|
}
|
|
eps = (pid == USB_TOKEN_IN) ? dev->ep_in : dev->ep_out;
|
|
if (ep == 0) {
|
|
return &dev->ep_ctl;
|
|
}
|
|
assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT);
|
|
assert(ep > 0 && ep <= USB_MAX_ENDPOINTS);
|
|
return eps + ep - 1;
|
|
}
|
|
|
|
uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep)
|
|
{
|
|
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
|
return uep->type;
|
|
}
|
|
|
|
void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type)
|
|
{
|
|
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
|
uep->type = type;
|
|
}
|
|
|
|
uint8_t usb_ep_get_ifnum(USBDevice *dev, int pid, int ep)
|
|
{
|
|
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
|
return uep->ifnum;
|
|
}
|
|
|
|
void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum)
|
|
{
|
|
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
|
uep->ifnum = ifnum;
|
|
}
|
|
|
|
void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep,
|
|
uint16_t raw)
|
|
{
|
|
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
|
int size, microframes;
|
|
|
|
size = raw & 0x7ff;
|
|
switch ((raw >> 11) & 3) {
|
|
case 1:
|
|
microframes = 2;
|
|
break;
|
|
case 2:
|
|
microframes = 3;
|
|
break;
|
|
default:
|
|
microframes = 1;
|
|
break;
|
|
}
|
|
uep->max_packet_size = size * microframes;
|
|
}
|
|
|
|
int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep)
|
|
{
|
|
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
|
return uep->max_packet_size;
|
|
}
|
|
|
|
void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled)
|
|
{
|
|
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
|
uep->pipeline = enabled;
|
|
}
|
|
|
|
USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep,
|
|
uint64_t id)
|
|
{
|
|
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
|
USBPacket *p;
|
|
|
|
while ((p = QTAILQ_FIRST(&uep->queue)) != NULL) {
|
|
if (p->id == id) {
|
|
return p;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|