mirror of https://gitee.com/openkylin/qemu.git
145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
/*
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* Linux host USB redirector
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*
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* Copyright (c) 2005 Fabrice Bellard
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*
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* Copyright (c) 2008 Max Krasnyansky
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* Support for host device auto connect & disconnect
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* Major rewrite to support fully async operation
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*
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* Copyright 2008 TJ <linux@tjworld.net>
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* Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition
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* to the legacy /proc/bus/usb USB device discovery and handling
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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/osdep.h"
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#include "qemu-common.h"
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#include "hw/usb.h"
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#include "hw/usb/host.h"
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/*
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* Autoconnect filter
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* Format:
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* auto:bus:dev[:vid:pid]
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* auto:bus.dev[:vid:pid]
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*
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* bus - bus number (dec, * means any)
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* dev - device number (dec, * means any)
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* vid - vendor id (hex, * means any)
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* pid - product id (hex, * means any)
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*
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* See 'lsusb' output.
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*/
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static int parse_filter(const char *spec, struct USBAutoFilter *f)
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{
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enum { BUS, DEV, VID, PID, DONE };
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const char *p = spec;
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int i;
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f->bus_num = 0;
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f->addr = 0;
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f->vendor_id = 0;
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f->product_id = 0;
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for (i = BUS; i < DONE; i++) {
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p = strpbrk(p, ":.");
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if (!p) {
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break;
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}
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p++;
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if (*p == '*') {
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continue;
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}
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switch (i) {
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case BUS:
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f->bus_num = strtol(p, NULL, 10);
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break;
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case DEV:
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f->addr = strtol(p, NULL, 10);
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break;
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case VID:
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f->vendor_id = strtol(p, NULL, 16);
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break;
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case PID:
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f->product_id = strtol(p, NULL, 16);
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break;
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}
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}
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if (i < DEV) {
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fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
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return -1;
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}
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return 0;
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}
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USBDevice *usb_host_device_open(USBBus *bus, const char *devname)
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{
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struct USBAutoFilter filter;
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USBDevice *dev;
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char *p;
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dev = usb_create(bus, "usb-host");
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if (strstr(devname, "auto:")) {
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if (parse_filter(devname, &filter) < 0) {
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goto fail;
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}
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} else {
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p = strchr(devname, '.');
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if (p) {
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filter.bus_num = strtoul(devname, NULL, 0);
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filter.addr = strtoul(p + 1, NULL, 0);
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filter.vendor_id = 0;
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filter.product_id = 0;
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} else {
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p = strchr(devname, ':');
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if (p) {
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filter.bus_num = 0;
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filter.addr = 0;
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filter.vendor_id = strtoul(devname, NULL, 16);
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filter.product_id = strtoul(p + 1, NULL, 16);
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} else {
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goto fail;
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}
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}
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}
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qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num);
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qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr);
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qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
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qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
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return dev;
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fail:
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object_unparent(OBJECT(dev));
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return NULL;
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}
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static void usb_host_register_types(void)
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{
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usb_legacy_register("usb-host", "host", usb_host_device_open);
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}
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type_init(usb_host_register_types)
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