Archipelago » qemu

/*

 * Linux host USB redirector

 *

 * Copyright (c) 2005 Fabrice Bellard

 *

 * Copyright (c) 2008 Max Krasnyansky

 *      Support for host device auto connect & disconnect

 *      Major rewrite to support fully async operation

 *

 * Copyright 2008 TJ <linux@tjworld.net>

 *      Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition

 *      to the legacy /proc/bus/usb USB device discovery and handling

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include "qemu-common.h"

#include "hw/usb.h"

#include "hw/usb/host.h"

/*

 * Autoconnect filter

 * Format:

 *    auto:bus:dev[:vid:pid]

 *    auto:bus.dev[:vid:pid]

 *

 *    bus  - bus number    (dec, * means any)

 *    dev  - device number (dec, * means any)

 *    vid  - vendor id     (hex, * means any)

 *    pid  - product id    (hex, * means any)

 *

 *    See 'lsusb' output.

 */

static int parse_filter(const char *spec, struct USBAutoFilter *f)

{

    enum { BUS, DEV, VID, PID, DONE };

    const char *p = spec;

    int i;

    f->bus_num    = 0;

    f->addr       = 0;

    f->vendor_id  = 0;

    f->product_id = 0;

    for (i = BUS; i < DONE; i++) {

        p = strpbrk(p, ":.");

        if (!p) {

            break;

        }

        p++;

        if (*p == '*') {

            continue;

        }

        switch (i) {

        case BUS:

            f->bus_num = strtol(p, NULL, 10);

            break;

        case DEV:

            f->addr    = strtol(p, NULL, 10);

            break;

        case VID:

            f->vendor_id  = strtol(p, NULL, 16);

            break;

        case PID:

            f->product_id = strtol(p, NULL, 16);

            break;

        }

    }

    if (i < DEV) {

        fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);

        return -1;

    }

    return 0;

}

USBDevice *usb_host_device_open(USBBus *bus, const char *devname)

{

    struct USBAutoFilter filter;

    USBDevice *dev;

    char *p;

    dev = usb_create(bus, "usb-host");

    if (strstr(devname, "auto:")) {

        if (parse_filter(devname, &filter) < 0) {

            goto fail;

        }

    } else {

        p = strchr(devname, '.');

        if (p) {

            filter.bus_num    = strtoul(devname, NULL, 0);

            filter.addr       = strtoul(p + 1, NULL, 0);

            filter.vendor_id  = 0;

            filter.product_id = 0;

        } else {

            p = strchr(devname, ':');

            if (p) {

                filter.bus_num    = 0;

                filter.addr       = 0;

                filter.vendor_id  = strtoul(devname, NULL, 16);

                filter.product_id = strtoul(p + 1, NULL, 16);

            } else {

                goto fail;

            }

        }

    }

    qdev_prop_set_uint32(&dev->qdev, "hostbus",   filter.bus_num);

    qdev_prop_set_uint32(&dev->qdev, "hostaddr",  filter.addr);

    qdev_prop_set_uint32(&dev->qdev, "vendorid",  filter.vendor_id);

    qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);

    qdev_init_nofail(&dev->qdev);

    return dev;

fail:

    qdev_free(&dev->qdev);

    return NULL;

}

static void usb_host_register_types(void)

{

    usb_legacy_register("usb-host", "host", usb_host_device_open);

}

type_init(usb_host_register_types)