usb-linux.c 42.1 KB
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/*
 * Linux host USB redirector
 *
 * Copyright (c) 2005 Fabrice Bellard
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 *
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 * Copyright (c) 2008 Max Krasnyansky
 *      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>
 *      Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition
 *      to the legacy /proc/bus/usb USB device discovery and handling
 *
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 * 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.
 */
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#include "qemu-common.h"
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#include "qemu-timer.h"
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#include "monitor.h"
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#include <dirent.h>
#include <sys/ioctl.h>
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#include <signal.h>
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#include <linux/usbdevice_fs.h>
#include <linux/version.h>
#include "hw/usb.h"
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/* We redefine it to avoid version problems */
struct usb_ctrltransfer {
    uint8_t  bRequestType;
    uint8_t  bRequest;
    uint16_t wValue;
    uint16_t wIndex;
    uint16_t wLength;
    uint32_t timeout;
    void *data;
};

struct usb_ctrlrequest {
    uint8_t bRequestType;
    uint8_t bRequest;
    uint16_t wValue;
    uint16_t wIndex;
    uint16_t wLength;
};

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typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
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                        int vendor_id, int product_id,
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                        const char *product_name, int speed);
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//#define DEBUG
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#ifdef DEBUG
#define dprintf printf
#else
#define dprintf(...)
#endif
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#define USBDBG_DEVOPENED "husb: opened %s/devices\n"

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#define USBPROCBUS_PATH "/proc/bus/usb"
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#define PRODUCT_NAME_SZ 32
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#define MAX_ENDPOINTS 16
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#define USBDEVBUS_PATH "/dev/bus/usb"
#define USBSYSBUS_PATH "/sys/bus/usb"

static char *usb_host_device_path;

#define USB_FS_NONE 0
#define USB_FS_PROC 1
#define USB_FS_DEV 2
#define USB_FS_SYS 3

static int usb_fs_type;
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/* endpoint association data */
struct endp_data {
    uint8_t type;
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    uint8_t halted;
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};

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enum {
    CTRL_STATE_IDLE = 0,
    CTRL_STATE_SETUP,
    CTRL_STATE_DATA,
    CTRL_STATE_ACK
};

/*
 * Control transfer state.
 * Note that 'buffer' _must_ follow 'req' field because 
 * we need contigious buffer when we submit control URB.
 */ 
struct ctrl_struct {
    uint16_t len;
    uint16_t offset;
    uint8_t  state;
    struct   usb_ctrlrequest req;
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    uint8_t  buffer[2048];
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};

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struct USBAutoFilter {
    uint32_t bus_num;
    uint32_t addr;
    uint32_t vendor_id;
    uint32_t product_id;
};

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typedef struct USBHostDevice {
    USBDevice dev;
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    int       fd;

    uint8_t   descr[1024];
    int       descr_len;
    int       configuration;
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    int       ninterfaces;
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    int       closing;
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    struct ctrl_struct ctrl;
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    struct endp_data endp_table[MAX_ENDPOINTS];
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    /* Host side address */
    int bus_num;
    int addr;
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    struct USBAutoFilter match;
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    QTAILQ_ENTRY(USBHostDevice) next;
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} USBHostDevice;

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static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs);

static int usb_host_close(USBHostDevice *dev);
static int parse_filter(const char *spec, struct USBAutoFilter *f);
static void usb_host_auto_check(void *unused);

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static int is_isoc(USBHostDevice *s, int ep)
{
    return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO;
}

static int is_halted(USBHostDevice *s, int ep)
{
    return s->endp_table[ep - 1].halted;
}

static void clear_halt(USBHostDevice *s, int ep)
{
    s->endp_table[ep - 1].halted = 0;
}

static void set_halt(USBHostDevice *s, int ep)
{
    s->endp_table[ep - 1].halted = 1;
}

/* 
 * Async URB state.
 * We always allocate one isoc descriptor even for bulk transfers
 * to simplify allocation and casts. 
 */
typedef struct AsyncURB
{
    struct usbdevfs_urb urb;
    struct usbdevfs_iso_packet_desc isocpd;
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    USBPacket     *packet;
    USBHostDevice *hdev;
} AsyncURB;
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static AsyncURB *async_alloc(void)
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{
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    return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB));
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}

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static void async_free(AsyncURB *aurb)
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{
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    qemu_free(aurb);
}
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static void async_complete_ctrl(USBHostDevice *s, USBPacket *p)
{
    switch(s->ctrl.state) {
    case CTRL_STATE_SETUP:
        if (p->len < s->ctrl.len)
            s->ctrl.len = p->len;
        s->ctrl.state = CTRL_STATE_DATA;
        p->len = 8;
        break;

    case CTRL_STATE_ACK:
        s->ctrl.state = CTRL_STATE_IDLE;
        p->len = 0;
        break;

    default:
        break;
    }
}

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static void async_complete(void *opaque)
{
    USBHostDevice *s = opaque;
    AsyncURB *aurb;

    while (1) {
    	USBPacket *p;
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	int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
        if (r < 0) {
            if (errno == EAGAIN)
                return;

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            if (errno == ENODEV && !s->closing) {
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                printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr);
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                usb_host_close(s);
                usb_host_auto_check(NULL);
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                return;
            }

            dprintf("husb: async. reap urb failed errno %d\n", errno);
            return;
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        }
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        p = aurb->packet;

	dprintf("husb: async completed. aurb %p status %d alen %d\n", 
                aurb, aurb->urb.status, aurb->urb.actual_length);

	if (p) {
            switch (aurb->urb.status) {
            case 0:
                p->len = aurb->urb.actual_length;
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                if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL)
                    async_complete_ctrl(s, p);
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                break;

            case -EPIPE:
                set_halt(s, p->devep);
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		p->len = USB_RET_STALL;
		break;

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            default:
                p->len = USB_RET_NAK;
                break;
            }

            usb_packet_complete(p);
	}

        async_free(aurb);
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    }
}

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static void async_cancel(USBPacket *unused, void *opaque)
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{
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    AsyncURB *aurb = opaque;
    USBHostDevice *s = aurb->hdev;
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    dprintf("husb: async cancel. aurb %p\n", aurb);

    /* Mark it as dead (see async_complete above) */
    aurb->packet = NULL;
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    int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
    if (r < 0) {
        dprintf("husb: async. discard urb failed errno %d\n", errno);
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    }
}

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static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
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{
    int dev_descr_len, config_descr_len;
    int interface, nb_interfaces, nb_configurations;
    int ret, i;

    if (configuration == 0) /* address state - ignore */
        return 1;

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    dprintf("husb: claiming interfaces. config %d\n", configuration);

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    i = 0;
    dev_descr_len = dev->descr[0];
    if (dev_descr_len > dev->descr_len)
        goto fail;
    nb_configurations = dev->descr[17];

    i += dev_descr_len;
    while (i < dev->descr_len) {
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        dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
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               dev->descr[i], dev->descr[i+1]);
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        if (dev->descr[i+1] != USB_DT_CONFIG) {
            i += dev->descr[i];
            continue;
        }
        config_descr_len = dev->descr[i];

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	printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); 
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        if (configuration < 0 || configuration == dev->descr[i + 5]) {
            configuration = dev->descr[i + 5];
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            break;
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        }
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        i += config_descr_len;
    }

    if (i >= dev->descr_len) {
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        fprintf(stderr, "husb: update iface failed. no matching configuration\n");
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        goto fail;
    }
    nb_interfaces = dev->descr[i + 4];

#ifdef USBDEVFS_DISCONNECT
    /* earlier Linux 2.4 do not support that */
    {
        struct usbdevfs_ioctl ctrl;
        for (interface = 0; interface < nb_interfaces; interface++) {
            ctrl.ioctl_code = USBDEVFS_DISCONNECT;
            ctrl.ifno = interface;
            ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
            if (ret < 0 && errno != ENODATA) {
                perror("USBDEVFS_DISCONNECT");
                goto fail;
            }
        }
    }
#endif

    /* XXX: only grab if all interfaces are free */
    for (interface = 0; interface < nb_interfaces; interface++) {
        ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
        if (ret < 0) {
            if (errno == EBUSY) {
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                printf("husb: update iface. device already grabbed\n");
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            } else {
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                perror("husb: failed to claim interface");
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            }
        fail:
            return 0;
        }
    }

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    printf("husb: %d interfaces claimed for configuration %d\n",
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           nb_interfaces, configuration);

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    dev->ninterfaces   = nb_interfaces;
    dev->configuration = configuration;
    return 1;
}

static int usb_host_release_interfaces(USBHostDevice *s)
{
    int ret, i;

    dprintf("husb: releasing interfaces\n");

    for (i = 0; i < s->ninterfaces; i++) {
        ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i);
        if (ret < 0) {
            perror("husb: failed to release interface");
            return 0;
        }
    }

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    return 1;
}

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static void usb_host_handle_reset(USBDevice *dev)
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{
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    USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
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    dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);

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    ioctl(s->fd, USBDEVFS_RESET);
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    usb_host_claim_interfaces(s, s->configuration);
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}
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static void usb_host_handle_destroy(USBDevice *dev)
{
    USBHostDevice *s = (USBHostDevice *)dev;

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    usb_host_close(s);
    QTAILQ_REMOVE(&hostdevs, s, next);
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}

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static int usb_linux_update_endp_table(USBHostDevice *s);

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static int usb_host_handle_data(USBHostDevice *s, USBPacket *p)
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{
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    struct usbdevfs_urb *urb;
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    AsyncURB *aurb;
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    int ret;

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    aurb = async_alloc();
    aurb->hdev   = s;
    aurb->packet = p;

    urb = &aurb->urb;
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    if (p->pid == USB_TOKEN_IN)
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    	urb->endpoint = p->devep | 0x80;
    else
    	urb->endpoint = p->devep;

    if (is_halted(s, p->devep)) {
	ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint);
        if (ret < 0) {
            dprintf("husb: failed to clear halt. ep 0x%x errno %d\n", 
                   urb->endpoint, errno);
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            return USB_RET_NAK;
        }
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        clear_halt(s, p->devep);
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    }

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    urb->buffer        = p->data;
    urb->buffer_length = p->len;
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    if (is_isoc(s, p->devep)) {
        /* Setup ISOC transfer */
        urb->type     = USBDEVFS_URB_TYPE_ISO;
        urb->flags    = USBDEVFS_URB_ISO_ASAP;
        urb->number_of_packets = 1;
        urb->iso_frame_desc[0].length = p->len;
    } else {
        /* Setup bulk transfer */
        urb->type     = USBDEVFS_URB_TYPE_BULK;
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    }

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    urb->usercontext = s;
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    ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
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    dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb);
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    if (ret < 0) {
        dprintf("husb: submit failed. errno %d\n", errno);
        async_free(aurb);
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        switch(errno) {
        case ETIMEDOUT:
            return USB_RET_NAK;
        case EPIPE:
        default:
            return USB_RET_STALL;
        }
    }
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    usb_defer_packet(p, async_cancel, aurb);
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    return USB_RET_ASYNC;
}

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static int ctrl_error(void)
{
    if (errno == ETIMEDOUT)
        return USB_RET_NAK;
    else 
        return USB_RET_STALL;
}

static int usb_host_set_address(USBHostDevice *s, int addr)
{
    dprintf("husb: ctrl set addr %u\n", addr);
    s->dev.addr = addr;
    return 0;
}

static int usb_host_set_config(USBHostDevice *s, int config)
{
    usb_host_release_interfaces(s);

    int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
 
    dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
    
    if (ret < 0)
        return ctrl_error();
 
    usb_host_claim_interfaces(s, config);
    return 0;
}

static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
{
    struct usbdevfs_setinterface si;
    int ret;

    si.interface  = iface;
    si.altsetting = alt;
    ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
    
    dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n", 
    	iface, alt, ret, errno);
    
    if (ret < 0)
        return ctrl_error();

    usb_linux_update_endp_table(s);
    return 0;
}

static int usb_host_handle_control(USBHostDevice *s, USBPacket *p)
{
    struct usbdevfs_urb *urb;
    AsyncURB *aurb;
    int ret, value, index;
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    int buffer_len;
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    /* 
     * Process certain standard device requests.
     * These are infrequent and are processed synchronously.
     */
    value = le16_to_cpu(s->ctrl.req.wValue);
    index = le16_to_cpu(s->ctrl.req.wIndex);

    dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
        s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, 
        s->ctrl.len);

    if (s->ctrl.req.bRequestType == 0) {
        switch (s->ctrl.req.bRequest) {
        case USB_REQ_SET_ADDRESS:
            return usb_host_set_address(s, value);

        case USB_REQ_SET_CONFIGURATION:
            return usb_host_set_config(s, value & 0xff);
        }
    }

    if (s->ctrl.req.bRequestType == 1 &&
                  s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE)
        return usb_host_set_interface(s, index, value);

    /* The rest are asynchronous */

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    buffer_len = 8 + s->ctrl.len;
    if (buffer_len > sizeof(s->ctrl.buffer)) {
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        fprintf(stderr, "husb: ctrl buffer too small (%u > %zu)\n",
                buffer_len, sizeof(s->ctrl.buffer));
        return USB_RET_STALL;
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    }

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    aurb = async_alloc();
    aurb->hdev   = s;
    aurb->packet = p;

    /* 
     * Setup ctrl transfer.
     *
     * s->ctrl is layed out such that data buffer immediately follows
     * 'req' struct which is exactly what usbdevfs expects.
     */ 
    urb = &aurb->urb;

    urb->type     = USBDEVFS_URB_TYPE_CONTROL;
    urb->endpoint = p->devep;

    urb->buffer        = &s->ctrl.req;
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    urb->buffer_length = buffer_len;
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    urb->usercontext = s;

    ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);

    dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);

    if (ret < 0) {
        dprintf("husb: submit failed. errno %d\n", errno);
        async_free(aurb);

        switch(errno) {
        case ETIMEDOUT:
            return USB_RET_NAK;
        case EPIPE:
        default:
            return USB_RET_STALL;
        }
    }

    usb_defer_packet(p, async_cancel, aurb);
    return USB_RET_ASYNC;
}

static int do_token_setup(USBDevice *dev, USBPacket *p)
{
    USBHostDevice *s = (USBHostDevice *) dev;
    int ret = 0;

    if (p->len != 8)
        return USB_RET_STALL;
 
    memcpy(&s->ctrl.req, p->data, 8);
    s->ctrl.len    = le16_to_cpu(s->ctrl.req.wLength);
    s->ctrl.offset = 0;
    s->ctrl.state  = CTRL_STATE_SETUP;

    if (s->ctrl.req.bRequestType & USB_DIR_IN) {
        ret = usb_host_handle_control(s, p);
        if (ret < 0)
            return ret;

        if (ret < s->ctrl.len)
            s->ctrl.len = ret;
        s->ctrl.state = CTRL_STATE_DATA;
    } else {
        if (s->ctrl.len == 0)
            s->ctrl.state = CTRL_STATE_ACK;
        else
            s->ctrl.state = CTRL_STATE_DATA;
    }

    return ret;
}

static int do_token_in(USBDevice *dev, USBPacket *p)
{
    USBHostDevice *s = (USBHostDevice *) dev;
    int ret = 0;

    if (p->devep != 0)
        return usb_host_handle_data(s, p);

    switch(s->ctrl.state) {
    case CTRL_STATE_ACK:
        if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
            ret = usb_host_handle_control(s, p);
            if (ret == USB_RET_ASYNC)
                return USB_RET_ASYNC;

            s->ctrl.state = CTRL_STATE_IDLE;
            return ret > 0 ? 0 : ret;
        }

        return 0;

    case CTRL_STATE_DATA:
        if (s->ctrl.req.bRequestType & USB_DIR_IN) {
            int len = s->ctrl.len - s->ctrl.offset;
            if (len > p->len)
                len = p->len;
            memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len);
            s->ctrl.offset += len;
            if (s->ctrl.offset >= s->ctrl.len)
                s->ctrl.state = CTRL_STATE_ACK;
            return len;
        }

        s->ctrl.state = CTRL_STATE_IDLE;
        return USB_RET_STALL;

    default:
        return USB_RET_STALL;
    }
}

static int do_token_out(USBDevice *dev, USBPacket *p)
{
    USBHostDevice *s = (USBHostDevice *) dev;

    if (p->devep != 0)
        return usb_host_handle_data(s, p);

    switch(s->ctrl.state) {
    case CTRL_STATE_ACK:
        if (s->ctrl.req.bRequestType & USB_DIR_IN) {
            s->ctrl.state = CTRL_STATE_IDLE;
            /* transfer OK */
        } else {
            /* ignore additional output */
        }
        return 0;

    case CTRL_STATE_DATA:
        if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
            int len = s->ctrl.len - s->ctrl.offset;
            if (len > p->len)
                len = p->len;
            memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len);
            s->ctrl.offset += len;
            if (s->ctrl.offset >= s->ctrl.len)
                s->ctrl.state = CTRL_STATE_ACK;
            return len;
        }

        s->ctrl.state = CTRL_STATE_IDLE;
        return USB_RET_STALL;

    default:
        return USB_RET_STALL;
    }
}

/*
 * Packet handler.
 * Called by the HC (host controller).
 *
 * Returns length of the transaction or one of the USB_RET_XXX codes.
 */
717
static int usb_host_handle_packet(USBDevice *s, USBPacket *p)
718 719 720 721 722 723 724 725 726 727 728 729 730 731
{
    switch(p->pid) {
    case USB_MSG_ATTACH:
        s->state = USB_STATE_ATTACHED;
        return 0;

    case USB_MSG_DETACH:
        s->state = USB_STATE_NOTATTACHED;
        return 0;

    case USB_MSG_RESET:
        s->remote_wakeup = 0;
        s->addr = 0;
        s->state = USB_STATE_DEFAULT;
732
        s->info->handle_reset(s);
733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754
        return 0;
    }

    /* Rest of the PIDs must match our address */
    if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
        return USB_RET_NODEV;

    switch (p->pid) {
    case USB_TOKEN_SETUP:
        return do_token_setup(s, p);

    case USB_TOKEN_IN:
        return do_token_in(s, p);

    case USB_TOKEN_OUT:
        return do_token_out(s, p);
 
    default:
        return USB_RET_STALL;
    }
}

755 756 757 758 759
/* returns 1 on problem encountered or 0 for success */
static int usb_linux_update_endp_table(USBHostDevice *s)
{
    uint8_t *descriptors;
    uint8_t devep, type, configuration, alt_interface;
P
pbrook 已提交
760
    struct usb_ctrltransfer ct;
761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788
    int interface, ret, length, i;

    ct.bRequestType = USB_DIR_IN;
    ct.bRequest = USB_REQ_GET_CONFIGURATION;
    ct.wValue = 0;
    ct.wIndex = 0;
    ct.wLength = 1;
    ct.data = &configuration;
    ct.timeout = 50;

    ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
    if (ret < 0) {
        perror("usb_linux_update_endp_table");
        return 1;
    }

    /* in address state */
    if (configuration == 0)
        return 1;

    /* get the desired configuration, interface, and endpoint descriptors
     * from device description */
    descriptors = &s->descr[18];
    length = s->descr_len - 18;
    i = 0;

    if (descriptors[i + 1] != USB_DT_CONFIG ||
        descriptors[i + 5] != configuration) {
789
        dprintf("invalid descriptor data - configuration\n");
790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813
        return 1;
    }
    i += descriptors[i];

    while (i < length) {
        if (descriptors[i + 1] != USB_DT_INTERFACE ||
            (descriptors[i + 1] == USB_DT_INTERFACE &&
             descriptors[i + 4] == 0)) {
            i += descriptors[i];
            continue;
        }

        interface = descriptors[i + 2];

        ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
        ct.bRequest = USB_REQ_GET_INTERFACE;
        ct.wValue = 0;
        ct.wIndex = interface;
        ct.wLength = 1;
        ct.data = &alt_interface;
        ct.timeout = 50;

        ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
        if (ret < 0) {
J
Jason Wessel 已提交
814
            alt_interface = interface;
815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849
        }

        /* the current interface descriptor is the active interface
         * and has endpoints */
        if (descriptors[i + 3] != alt_interface) {
            i += descriptors[i];
            continue;
        }

        /* advance to the endpoints */
        while (i < length && descriptors[i +1] != USB_DT_ENDPOINT)
            i += descriptors[i];

        if (i >= length)
            break;

        while (i < length) {
            if (descriptors[i + 1] != USB_DT_ENDPOINT)
                break;

            devep = descriptors[i + 2];
            switch (descriptors[i + 3] & 0x3) {
            case 0x00:
                type = USBDEVFS_URB_TYPE_CONTROL;
                break;
            case 0x01:
                type = USBDEVFS_URB_TYPE_ISO;
                break;
            case 0x02:
                type = USBDEVFS_URB_TYPE_BULK;
                break;
            case 0x03:
                type = USBDEVFS_URB_TYPE_INTERRUPT;
                break;
            default:
850
                dprintf("usb_host: malformed endpoint type\n");
851 852 853
                type = USBDEVFS_URB_TYPE_BULK;
            }
            s->endp_table[(devep & 0xf) - 1].type = type;
854
            s->endp_table[(devep & 0xf) - 1].halted = 0;
855 856 857 858 859 860 861

            i += descriptors[i];
        }
    }
    return 0;
}

862 863
static int usb_host_open(USBHostDevice *dev, int bus_num,
                         int addr, const char *prod_name)
B
bellard 已提交
864
{
865
    int fd = -1, ret;
B
bellard 已提交
866
    struct usbdevfs_connectinfo ci;
B
bellard 已提交
867
    char buf[1024];
868

869 870 871
    if (dev->fd != -1)
        goto fail;

872
    printf("husb: open device %d.%d\n", bus_num, addr);
873

874 875 876 877 878
    if (!usb_host_device_path) {
        perror("husb: USB Host Device Path not set");
        goto fail;
    }
    snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path,
B
bellard 已提交
879
             bus_num, addr);
880
    fd = open(buf, O_RDWR | O_NONBLOCK);
B
bellard 已提交
881
    if (fd < 0) {
B
bellard 已提交
882
        perror(buf);
883
        goto fail;
B
bellard 已提交
884
    }
885
    dprintf("husb: opened %s\n", buf);
B
bellard 已提交
886

887 888
    dev->bus_num = bus_num;
    dev->addr = addr;
889
    dev->fd = fd;
890

891 892 893
    /* read the device description */
    dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
    if (dev->descr_len <= 0) {
894
        perror("husb: reading device data failed");
B
bellard 已提交
895 896
        goto fail;
    }
897

898
#ifdef DEBUG
B
bellard 已提交
899
    {
900 901 902 903 904
        int x;
        printf("=== begin dumping device descriptor data ===\n");
        for (x = 0; x < dev->descr_len; x++)
            printf("%02x ", dev->descr[x]);
        printf("\n=== end dumping device descriptor data ===\n");
B
bellard 已提交
905
    }
B
bellard 已提交
906 907
#endif

908

909 910 911 912 913 914 915
    /* 
     * Initial configuration is -1 which makes us claim first 
     * available config. We used to start with 1, which does not
     * always work. I've seen devices where first config starts 
     * with 2.
     */
    if (!usb_host_claim_interfaces(dev, -1))
916
        goto fail;
B
bellard 已提交
917 918 919

    ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
    if (ret < 0) {
920
        perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
B
bellard 已提交
921 922 923
        goto fail;
    }

924
    printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
B
bellard 已提交
925

926 927
    ret = usb_linux_update_endp_table(dev);
    if (ret)
B
bellard 已提交
928
        goto fail;
929

B
bellard 已提交
930 931 932 933 934
    if (ci.slow)
        dev->dev.speed = USB_SPEED_LOW;
    else
        dev->dev.speed = USB_SPEED_HIGH;

935
    if (!prod_name || prod_name[0] == '\0')
936
        snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
937
                 "host:%d.%d", bus_num, addr);
938
    else
939
        pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
940
                prod_name);
941

942 943
    /* USB devio uses 'write' flag to check for async completions */
    qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
944

945 946
    usb_device_attach(&dev->dev);
    return 0;
947

948
fail:
949
    dev->fd = -1;
950 951
    if (fd != -1)
        close(fd);
952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978
    return -1;
}

static int usb_host_close(USBHostDevice *dev)
{
    if (dev->fd == -1)
        return -1;

    qemu_set_fd_handler(dev->fd, NULL, NULL, NULL);
    dev->closing = 1;
    async_complete(dev);
    dev->closing = 0;
    usb_device_detach(&dev->dev);
    close(dev->fd);
    dev->fd = -1;
    return 0;
}

static int usb_host_initfn(USBDevice *dev)
{
    USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);

    dev->auto_attach = 0;
    s->fd = -1;
    QTAILQ_INSERT_TAIL(&hostdevs, s, next);
    usb_host_auto_check(NULL);
    return 0;
B
bellard 已提交
979
}
B
bellard 已提交
980

981
static struct USBDeviceInfo usb_host_dev_info = {
982
    .product_desc   = "USB Host Device",
983
    .qdev.name      = "usb-host",
984 985 986 987 988
    .qdev.size      = sizeof(USBHostDevice),
    .init           = usb_host_initfn,
    .handle_packet  = usb_host_handle_packet,
    .handle_reset   = usb_host_handle_reset,
    .handle_destroy = usb_host_handle_destroy,
989 990 991 992 993 994 995 996 997
    .usbdevice_name = "host",
    .usbdevice_init = usb_host_device_open,
    .qdev.props     = (Property[]) {
        DEFINE_PROP_UINT32("hostbus",  USBHostDevice, match.bus_num,    0),
        DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr,       0),
        DEFINE_PROP_HEX32("vendorid",  USBHostDevice, match.vendor_id,  0),
        DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0),
        DEFINE_PROP_END_OF_LIST(),
    },
998 999 1000 1001 1002 1003 1004 1005
};

static void usb_host_register_devices(void)
{
    usb_qdev_register(&usb_host_dev_info);
}
device_init(usb_host_register_devices)

1006 1007
USBDevice *usb_host_device_open(const char *devname)
{
1008
    struct USBAutoFilter filter;
1009 1010 1011
    USBDevice *dev;
    char *p;

1012
    dev = usb_create(NULL /* FIXME */, "usb-host");
1013

1014
    if (strstr(devname, "auto:")) {
1015
        if (parse_filter(devname, &filter) < 0)
1016 1017 1018
            goto fail;
    } else {
        if ((p = strchr(devname, '.'))) {
1019 1020 1021 1022
            filter.bus_num    = strtoul(devname, NULL, 0);
            filter.addr       = strtoul(p + 1, NULL, 0);
            filter.vendor_id  = 0;
            filter.product_id = 0;
1023
        } else if ((p = strchr(devname, ':'))) {
1024 1025
            filter.bus_num    = 0;
            filter.addr       = 0;
1026
            filter.vendor_id  = strtoul(devname, NULL, 16);
1027
            filter.product_id = strtoul(p + 1, NULL, 16);
1028 1029 1030
        } else {
            goto fail;
        }
1031
    }
1032

1033 1034
    qdev_prop_set_uint32(&dev->qdev, "hostbus",   filter.bus_num);
    qdev_prop_set_uint32(&dev->qdev, "hostaddr",  filter.addr);
1035 1036
    qdev_prop_set_uint32(&dev->qdev, "vendorid",  filter.vendor_id);
    qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
K
Kevin Wolf 已提交
1037
    qdev_init_nofail(&dev->qdev);
1038
    return dev;
1039

1040 1041 1042
fail:
    qdev_free(&dev->qdev);
    return NULL;
1043
}
1044 1045 1046

int usb_host_device_close(const char *devname)
{
1047
#if 0
1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
    char product_name[PRODUCT_NAME_SZ];
    int bus_num, addr;
    USBHostDevice *s;

    if (strstr(devname, "auto:"))
        return usb_host_auto_del(devname);

    if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
                             devname) < 0)
        return -1;
1058

1059 1060
    s = hostdev_find(bus_num, addr);
    if (s) {
1061
        usb_device_delete_addr(s->bus_num, s->dev.addr);
1062 1063
        return 0;
    }
1064
#endif
1065 1066 1067

    return -1;
}
1068

B
bellard 已提交
1069
static int get_tag_value(char *buf, int buf_size,
1070
                         const char *str, const char *tag,
B
bellard 已提交
1071 1072 1073 1074 1075 1076 1077 1078
                         const char *stopchars)
{
    const char *p;
    char *q;
    p = strstr(str, tag);
    if (!p)
        return -1;
    p += strlen(tag);
1079
    while (qemu_isspace(*p))
B
bellard 已提交
1080 1081 1082 1083 1084 1085 1086 1087 1088
        p++;
    q = buf;
    while (*p != '\0' && !strchr(stopchars, *p)) {
        if ((q - buf) < (buf_size - 1))
            *q++ = *p;
        p++;
    }
    *q = '\0';
    return q - buf;
B
bellard 已提交
1089 1090
}

1091 1092 1093 1094 1095 1096
/*
 * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
 * host's USB devices. This is legacy support since many distributions
 * are moving to /sys/bus/usb
 */
static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
B
bellard 已提交
1097
{
1098
    FILE *f = NULL;
B
bellard 已提交
1099
    char line[1024];
B
bellard 已提交
1100
    char buf[1024];
B
bellard 已提交
1101 1102
    int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
    char product_name[512];
1103
    int ret = 0;
1104

1105 1106 1107 1108 1109 1110
    if (!usb_host_device_path) {
        perror("husb: USB Host Device Path not set");
        goto the_end;
    }
    snprintf(line, sizeof(line), "%s/devices", usb_host_device_path);
    f = fopen(line, "r");
B
bellard 已提交
1111
    if (!f) {
1112 1113
        perror("husb: cannot open devices file");
        goto the_end;
B
bellard 已提交
1114
    }
1115

B
bellard 已提交
1116 1117
    device_count = 0;
    bus_num = addr = speed = class_id = product_id = vendor_id = 0;
B
bellard 已提交
1118
    for(;;) {
B
bellard 已提交
1119
        if (fgets(line, sizeof(line), f) == NULL)
B
bellard 已提交
1120
            break;
B
bellard 已提交
1121 1122 1123
        if (strlen(line) > 0)
            line[strlen(line) - 1] = '\0';
        if (line[0] == 'T' && line[1] == ':') {
1124 1125
            if (device_count && (vendor_id || product_id)) {
                /* New device.  Add the previously discovered device.  */
1126
                ret = func(opaque, bus_num, addr, class_id, vendor_id,
B
bellard 已提交
1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164
                           product_id, product_name, speed);
                if (ret)
                    goto the_end;
            }
            if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
                goto fail;
            bus_num = atoi(buf);
            if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
                goto fail;
            addr = atoi(buf);
            if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
                goto fail;
            if (!strcmp(buf, "480"))
                speed = USB_SPEED_HIGH;
            else if (!strcmp(buf, "1.5"))
                speed = USB_SPEED_LOW;
            else
                speed = USB_SPEED_FULL;
            product_name[0] = '\0';
            class_id = 0xff;
            device_count++;
            product_id = 0;
            vendor_id = 0;
        } else if (line[0] == 'P' && line[1] == ':') {
            if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
                goto fail;
            vendor_id = strtoul(buf, NULL, 16);
            if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
                goto fail;
            product_id = strtoul(buf, NULL, 16);
        } else if (line[0] == 'S' && line[1] == ':') {
            if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
                goto fail;
            pstrcpy(product_name, sizeof(product_name), buf);
        } else if (line[0] == 'D' && line[1] == ':') {
            if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
                goto fail;
            class_id = strtoul(buf, NULL, 16);
B
bellard 已提交
1165
        }
B
bellard 已提交
1166 1167
    fail: ;
    }
1168 1169
    if (device_count && (vendor_id || product_id)) {
        /* Add the last device.  */
1170
        ret = func(opaque, bus_num, addr, class_id, vendor_id,
B
bellard 已提交
1171
                   product_id, product_name, speed);
B
bellard 已提交
1172
    }
B
bellard 已提交
1173
 the_end:
1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190
    if (f)
        fclose(f);
    return ret;
}

/*
 * Read sys file-system device file
 *
 * @line address of buffer to put file contents in
 * @line_size size of line
 * @device_file path to device file (printf format string)
 * @device_name device being opened (inserted into device_file)
 *
 * @return 0 failed, 1 succeeded ('line' contains data)
 */
static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name)
{
1191
#if 0
A
aliguori 已提交
1192
    Monitor *mon = cur_mon;
1193
#endif
1194 1195 1196 1197
    FILE *f;
    int ret = 0;
    char filename[PATH_MAX];

1198 1199
    snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
             device_file);
1200 1201
    f = fopen(filename, "r");
    if (f) {
1202
        ret = fgets(line, line_size, f) != NULL;
1203
        fclose(f);
1204
#if 0
1205
    } else {
1206 1207
        if (mon)
            monitor_printf(mon, "husb: could not open %s\n", filename);
1208
#endif
1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222
    }

    return ret;
}

/*
 * Use /sys/bus/usb/devices/ directory to determine host's USB
 * devices.
 *
 * This code is based on Robert Schiele's original patches posted to
 * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
 */
static int usb_host_scan_sys(void *opaque, USBScanFunc *func)
{
1223
    DIR *dir = NULL;
1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242
    char line[1024];
    int bus_num, addr, speed, class_id, product_id, vendor_id;
    int ret = 0;
    char product_name[512];
    struct dirent *de;

    dir = opendir(USBSYSBUS_PATH "/devices");
    if (!dir) {
        perror("husb: cannot open devices directory");
        goto the_end;
    }

    while ((de = readdir(dir))) {
        if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
            char *tmpstr = de->d_name;
            if (!strncmp(de->d_name, "usb", 3))
                tmpstr += 3;
            bus_num = atoi(tmpstr);

1243
            if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name))
1244 1245 1246 1247
                goto the_end;
            if (sscanf(line, "%d", &addr) != 1)
                goto the_end;

1248 1249
            if (!usb_host_read_file(line, sizeof(line), "bDeviceClass",
                                    de->d_name))
1250 1251 1252 1253
                goto the_end;
            if (sscanf(line, "%x", &class_id) != 1)
                goto the_end;

1254
            if (!usb_host_read_file(line, sizeof(line), "idVendor", de->d_name))
1255 1256 1257 1258
                goto the_end;
            if (sscanf(line, "%x", &vendor_id) != 1)
                goto the_end;

1259 1260
            if (!usb_host_read_file(line, sizeof(line), "idProduct",
                                    de->d_name))
1261 1262 1263 1264
                goto the_end;
            if (sscanf(line, "%x", &product_id) != 1)
                goto the_end;

1265 1266
            if (!usb_host_read_file(line, sizeof(line), "product",
                                    de->d_name)) {
1267 1268 1269 1270 1271 1272 1273
                *product_name = 0;
            } else {
                if (strlen(line) > 0)
                    line[strlen(line) - 1] = '\0';
                pstrcpy(product_name, sizeof(product_name), line);
            }

1274
            if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name))
1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300
                goto the_end;
            if (!strcmp(line, "480\n"))
                speed = USB_SPEED_HIGH;
            else if (!strcmp(line, "1.5\n"))
                speed = USB_SPEED_LOW;
            else
                speed = USB_SPEED_FULL;

            ret = func(opaque, bus_num, addr, class_id, vendor_id,
                       product_id, product_name, speed);
            if (ret)
                goto the_end;
        }
    }
 the_end:
    if (dir)
        closedir(dir);
    return ret;
}

/*
 * Determine how to access the host's USB devices and call the
 * specific support function.
 */
static int usb_host_scan(void *opaque, USBScanFunc *func)
{
A
aliguori 已提交
1301
    Monitor *mon = cur_mon;
1302 1303
    FILE *f = NULL;
    DIR *dir = NULL;
1304 1305 1306 1307 1308 1309
    int ret = 0;
    const char *fs_type[] = {"unknown", "proc", "dev", "sys"};
    char devpath[PATH_MAX];

    /* only check the host once */
    if (!usb_fs_type) {
1310 1311 1312 1313 1314 1315 1316 1317 1318
        dir = opendir(USBSYSBUS_PATH "/devices");
        if (dir) {
            /* devices found in /dev/bus/usb/ (yes - not a mistake!) */
            strcpy(devpath, USBDEVBUS_PATH);
            usb_fs_type = USB_FS_SYS;
            closedir(dir);
            dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH);
            goto found_devices;
        }
1319 1320 1321 1322 1323 1324
        f = fopen(USBPROCBUS_PATH "/devices", "r");
        if (f) {
            /* devices found in /proc/bus/usb/ */
            strcpy(devpath, USBPROCBUS_PATH);
            usb_fs_type = USB_FS_PROC;
            fclose(f);
1325
            dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH);
1326
            goto found_devices;
1327 1328 1329
        }
        /* try additional methods if an access method hasn't been found yet */
        f = fopen(USBDEVBUS_PATH "/devices", "r");
1330
        if (f) {
1331 1332 1333 1334
            /* devices found in /dev/bus/usb/ */
            strcpy(devpath, USBDEVBUS_PATH);
            usb_fs_type = USB_FS_DEV;
            fclose(f);
1335
            dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH);
1336
            goto found_devices;
1337
        }
1338
    found_devices:
1339
        if (!usb_fs_type) {
1340 1341
            if (mon)
                monitor_printf(mon, "husb: unable to access USB devices\n");
1342
            return -ENOENT;
1343 1344 1345 1346
        }

        /* the module setting (used later for opening devices) */
        usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
1347
        strcpy(usb_host_device_path, devpath);
1348 1349 1350
        if (mon)
            monitor_printf(mon, "husb: using %s file-system with %s\n",
                           fs_type[usb_fs_type], usb_host_device_path);
1351 1352 1353 1354 1355 1356 1357 1358 1359 1360
    }

    switch (usb_fs_type) {
    case USB_FS_PROC:
    case USB_FS_DEV:
        ret = usb_host_scan_dev(opaque, func);
        break;
    case USB_FS_SYS:
        ret = usb_host_scan_sys(opaque, func);
        break;
1361 1362 1363
    default:
        ret = -EINVAL;
        break;
1364
    }
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1365
    return ret;
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1366 1367
}

1368 1369 1370
static QEMUTimer *usb_auto_timer;

static int usb_host_auto_scan(void *opaque, int bus_num, int addr,
1371 1372
                              int class_id, int vendor_id, int product_id,
                              const char *product_name, int speed)
1373 1374
{
    struct USBAutoFilter *f;
1375
    struct USBHostDevice *s;
1376 1377 1378 1379 1380

    /* Ignore hubs */
    if (class_id == 9)
        return 0;

1381 1382 1383 1384
    QTAILQ_FOREACH(s, &hostdevs, next) {
        f = &s->match;

	if (f->bus_num > 0 && f->bus_num != bus_num)
1385 1386
            continue;

1387
	if (f->addr > 0 && f->addr != addr)
1388 1389
            continue;

1390
	if (f->vendor_id > 0 && f->vendor_id != vendor_id)
1391 1392
            continue;

1393
	if (f->product_id > 0 && f->product_id != product_id)
1394 1395 1396 1397
            continue;

        /* We got a match */

1398
        /* Already attached ? */
1399
        if (s->fd != -1)
1400 1401
            return 0;

1402
        dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
1403

1404
	usb_host_open(s, bus_num, addr, product_name);
1405 1406 1407 1408 1409
    }

    return 0;
}

1410
static void usb_host_auto_check(void *unused)
1411
{
1412 1413 1414
    struct USBHostDevice *s;
    int unconnected = 0;

1415
    usb_host_scan(NULL, usb_host_auto_scan);
1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433

    QTAILQ_FOREACH(s, &hostdevs, next) {
        if (s->fd == -1)
            unconnected++;
    }

    if (unconnected == 0) {
        /* nothing to watch */
        if (usb_auto_timer)
            qemu_del_timer(usb_auto_timer);
        return;
    }

    if (!usb_auto_timer) {
        usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_check, NULL);
        if (!usb_auto_timer)
            return;
    }
1434 1435 1436 1437
    qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
}

/*
1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448
 * 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.
1449
 */
1450
static int parse_filter(const char *spec, struct USBAutoFilter *f)
1451
{
1452 1453 1454 1455
    enum { BUS, DEV, VID, PID, DONE };
    const char *p = spec;
    int i;

1456 1457 1458 1459
    f->bus_num    = 0;
    f->addr       = 0;
    f->vendor_id  = 0;
    f->product_id = 0;
1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484

    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;
}

B
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1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504
/**********************/
/* USB host device info */

struct usb_class_info {
    int class;
    const char *class_name;
};

static const struct usb_class_info usb_class_info[] = {
    { USB_CLASS_AUDIO, "Audio"},
    { USB_CLASS_COMM, "Communication"},
    { USB_CLASS_HID, "HID"},
    { USB_CLASS_HUB, "Hub" },
    { USB_CLASS_PHYSICAL, "Physical" },
    { USB_CLASS_PRINTER, "Printer" },
    { USB_CLASS_MASS_STORAGE, "Storage" },
    { USB_CLASS_CDC_DATA, "Data" },
    { USB_CLASS_APP_SPEC, "Application Specific" },
    { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
    { USB_CLASS_STILL_IMAGE, "Still Image" },
1505
    { USB_CLASS_CSCID, "Smart Card" },
B
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1506 1507 1508 1509 1510
    { USB_CLASS_CONTENT_SEC, "Content Security" },
    { -1, NULL }
};

static const char *usb_class_str(uint8_t class)
B
bellard 已提交
1511
{
B
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1512 1513 1514 1515
    const struct usb_class_info *p;
    for(p = usb_class_info; p->class != -1; p++) {
        if (p->class == class)
            break;
B
bellard 已提交
1516
    }
B
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1517 1518 1519
    return p->class_name;
}

1520
static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id,
1521 1522 1523
                            int vendor_id, int product_id,
                            const char *product_name,
                            int speed)
B
bellard 已提交
1524 1525 1526 1527
{
    const char *class_str, *speed_str;

    switch(speed) {
1528 1529
    case USB_SPEED_LOW:
        speed_str = "1.5";
B
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1530
        break;
1531 1532
    case USB_SPEED_FULL:
        speed_str = "12";
B
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1533
        break;
1534 1535
    case USB_SPEED_HIGH:
        speed_str = "480";
B
bellard 已提交
1536 1537
        break;
    default:
1538
        speed_str = "?";
B
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1539 1540 1541
        break;
    }

A
aliguori 已提交
1542
    monitor_printf(mon, "  Device %d.%d, speed %s Mb/s\n",
B
bellard 已提交
1543 1544
                bus_num, addr, speed_str);
    class_str = usb_class_str(class_id);
1545
    if (class_str)
A
aliguori 已提交
1546
        monitor_printf(mon, "    %s:", class_str);
B
bellard 已提交
1547
    else
A
aliguori 已提交
1548 1549
        monitor_printf(mon, "    Class %02x:", class_id);
    monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
B
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1550
    if (product_name[0] != '\0')
A
aliguori 已提交
1551 1552
        monitor_printf(mon, ", %s", product_name);
    monitor_printf(mon, "\n");
B
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1553 1554
}

1555
static int usb_host_info_device(void *opaque, int bus_num, int addr,
B
bellard 已提交
1556
                                int class_id,
1557
                                int vendor_id, int product_id,
B
bellard 已提交
1558 1559 1560
                                const char *product_name,
                                int speed)
{
1561 1562 1563
    Monitor *mon = opaque;

    usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id,
B
bellard 已提交
1564 1565 1566 1567
                    product_name, speed);
    return 0;
}

A
aliguori 已提交
1568
static void dec2str(int val, char *str, size_t size)
1569
{
1570
    if (val == 0)
A
aliguori 已提交
1571
        snprintf(str, size, "*");
1572
    else
A
aliguori 已提交
1573
        snprintf(str, size, "%d", val); 
1574 1575
}

A
aliguori 已提交
1576
static void hex2str(int val, char *str, size_t size)
1577
{
1578
    if (val == 0)
A
aliguori 已提交
1579
        snprintf(str, size, "*");
1580
    else
1581
        snprintf(str, size, "%04x", val);
1582 1583
}

A
aliguori 已提交
1584
void usb_host_info(Monitor *mon)
B
bellard 已提交
1585
{
1586
    struct USBAutoFilter *f;
1587
    struct USBHostDevice *s;
1588

1589
    usb_host_scan(mon, usb_host_info_device);
1590

1591 1592 1593 1594
    if (QTAILQ_EMPTY(&hostdevs))
        return;
    monitor_printf(mon, "  Auto filters:\n");
    QTAILQ_FOREACH(s, &hostdevs, next) {
1595
        char bus[10], addr[10], vid[10], pid[10];
1596
        f = &s->match;
A
aliguori 已提交
1597 1598 1599 1600
        dec2str(f->bus_num, bus, sizeof(bus));
        dec2str(f->addr, addr, sizeof(addr));
        hex2str(f->vendor_id, vid, sizeof(vid));
        hex2str(f->product_id, pid, sizeof(pid));
A
aliguori 已提交
1601 1602
        monitor_printf(mon, "    Device %s.%s ID %s:%s\n",
                       bus, addr, vid, pid);
1603
    }
B
bellard 已提交
1604
}