[qemu.git] / usb-linux.c

/*
 * Linux host USB redirector
 *
 * Copyright (c) 2005 Fabrice Bellard
 *
 * 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 "vl.h"

#if defined(__linux__)
#include <dirent.h>
#include <sys/ioctl.h>
#include <linux/usbdevice_fs.h>
#include <linux/version.h>

/* 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;
};

typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
                        int vendor_id, int product_id,
                        const char *product_name, int speed);
static int usb_host_find_device(int *pbus_num, int *paddr,
                                char *product_name, int product_name_size,
                                const char *devname);

//#define DEBUG

#define USBDEVFS_PATH "/proc/bus/usb"
#define PRODUCT_NAME_SZ 32

typedef struct USBHostDevice {
    USBDevice dev;
    int fd;
} USBHostDevice;

static void usb_host_handle_reset(USBDevice *dev)
{
#if 0
    USBHostDevice *s = (USBHostDevice *)dev;
    /* USBDEVFS_RESET, but not the first time as it has already be
       done by the host OS */
    ioctl(s->fd, USBDEVFS_RESET);
#endif
}

static void usb_host_handle_destroy(USBDevice *dev)
{
    USBHostDevice *s = (USBHostDevice *)dev;

    if (s->fd >= 0)
        close(s->fd);
    qemu_free(s);
}

static int usb_host_handle_control(USBDevice *dev,
                                   int request,
                                   int value,
                                   int index,
                                   int length,
                                   uint8_t *data)
{
    USBHostDevice *s = (USBHostDevice *)dev;
    struct usb_ctrltransfer ct;
    int ret;

    if (request == (DeviceOutRequest | USB_REQ_SET_ADDRESS)) {
        /* specific SET_ADDRESS support */
        dev->addr = value;
        return 0;
    } else {
        ct.bRequestType = request >> 8;
        ct.bRequest = request;
        ct.wValue = value;
        ct.wIndex = index;
        ct.wLength = length;
        ct.timeout = 50;
        ct.data = data;
        ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
        if (ret < 0) {
            switch(errno) {
            case ETIMEDOUT:
                return USB_RET_NAK;
            default:
                return USB_RET_STALL;
            }
        } else {
            return ret;
        }
   }
}

static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
{
    USBHostDevice *s = (USBHostDevice *)dev;
    struct usbdevfs_bulktransfer bt;
    int ret;
    uint8_t devep = p->devep;

    /* XXX: optimize and handle all data types by looking at the
       config descriptor */
    if (p->pid == USB_TOKEN_IN)
        devep |= 0x80;
    bt.ep = devep;
    bt.len = p->len;
    bt.timeout = 50;
    bt.data = p->data;
    ret = ioctl(s->fd, USBDEVFS_BULK, &bt);
    if (ret < 0) {
        switch(errno) {
        case ETIMEDOUT:
            return USB_RET_NAK;
        case EPIPE:
        default:
#ifdef DEBUG
            printf("handle_data: errno=%d\n", errno);
#endif
            return USB_RET_STALL;
        }
    } else {
        return ret;
    }
}

/* XXX: exclude high speed devices or implement EHCI */
USBDevice *usb_host_device_open(const char *devname)
{
    int fd, interface, ret, i;
    USBHostDevice *dev;
    struct usbdevfs_connectinfo ci;
    uint8_t descr[1024];
    char buf[1024];
    int descr_len, dev_descr_len, config_descr_len, nb_interfaces;
    int bus_num, addr;
    char product_name[PRODUCT_NAME_SZ];

    if (usb_host_find_device(&bus_num, &addr,
                             product_name, sizeof(product_name),
                             devname) < 0)
        return NULL;

    snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d",
             bus_num, addr);
    fd = open(buf, O_RDWR);
    if (fd < 0) {
        perror(buf);
        return NULL;
    }

    /* read the config description */
    descr_len = read(fd, descr, sizeof(descr));
    if (descr_len <= 0) {
        perror("read descr");
        goto fail;
    }

    i = 0;
    dev_descr_len = descr[0];
    if (dev_descr_len > descr_len)
        goto fail;
    i += dev_descr_len;
    config_descr_len = descr[i];
    if (i + config_descr_len > descr_len)
        goto fail;
    nb_interfaces = descr[i + 4];
    if (nb_interfaces != 1) {
        /* NOTE: currently we grab only one interface */
        fprintf(stderr, "usb_host: only one interface supported\n");
        goto fail;
    }

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

    /* XXX: only grab if all interfaces are free */
    interface = 0;
    ret = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &interface);
    if (ret < 0) {
        if (errno == EBUSY) {
            fprintf(stderr, "usb_host: device already grabbed\n");
        } else {
            perror("USBDEVFS_CLAIMINTERFACE");
        }
    fail:
        close(fd);
        return NULL;
    }

    ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
    if (ret < 0) {
        perror("USBDEVFS_CONNECTINFO");
        goto fail;
    }

#ifdef DEBUG
    printf("host USB device %d.%d grabbed\n", bus_num, addr);
#endif

    dev = qemu_mallocz(sizeof(USBHostDevice));
    if (!dev)
        goto fail;
    dev->fd = fd;
    if (ci.slow)
        dev->dev.speed = USB_SPEED_LOW;
    else
        dev->dev.speed = USB_SPEED_HIGH;
    dev->dev.handle_packet = usb_generic_handle_packet;

    dev->dev.handle_reset = usb_host_handle_reset;
    dev->dev.handle_control = usb_host_handle_control;
    dev->dev.handle_data = usb_host_handle_data;
    dev->dev.handle_destroy = usb_host_handle_destroy;

    if (product_name[0] == '\0')
        snprintf(dev->dev.devname, sizeof(dev->dev.devname),
                 "host:%s", devname);
    else
        pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
                product_name);

    return (USBDevice *)dev;
}

static int get_tag_value(char *buf, int buf_size,
                         const char *str, const char *tag,
                         const char *stopchars)
{
    const char *p;
    char *q;
    p = strstr(str, tag);
    if (!p)
        return -1;
    p += strlen(tag);
    while (isspace(*p))
        p++;
    q = buf;
    while (*p != '\0' && !strchr(stopchars, *p)) {
        if ((q - buf) < (buf_size - 1))
            *q++ = *p;
        p++;
    }
    *q = '\0';
    return q - buf;
}

static int usb_host_scan(void *opaque, USBScanFunc *func)
{
    FILE *f;
    char line[1024];
    char buf[1024];
    int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
    int ret;
    char product_name[512];

    f = fopen(USBDEVFS_PATH "/devices", "r");
    if (!f) {
        term_printf("Could not open %s\n", USBDEVFS_PATH "/devices");
        return 0;
    }
    device_count = 0;
    bus_num = addr = speed = class_id = product_id = vendor_id = 0;
    ret = 0;
    for(;;) {
        if (fgets(line, sizeof(line), f) == NULL)
            break;
        if (strlen(line) > 0)
            line[strlen(line) - 1] = '\0';
        if (line[0] == 'T' && line[1] == ':') {
            if (device_count && (vendor_id || product_id)) {
                /* New device.  Add the previously discovered device.  */
                ret = func(opaque, bus_num, addr, class_id, vendor_id,
                           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);
        }
    fail: ;
    }
    if (device_count && (vendor_id || product_id)) {
        /* Add the last device.  */
        ret = func(opaque, bus_num, addr, class_id, vendor_id,
                   product_id, product_name, speed);
    }
 the_end:
    fclose(f);
    return ret;
}

typedef struct FindDeviceState {
    int vendor_id;
    int product_id;
    int bus_num;
    int addr;
    char product_name[PRODUCT_NAME_SZ];
} FindDeviceState;

static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
                                     int class_id,
                                     int vendor_id, int product_id,
                                     const char *product_name, int speed)
{
    FindDeviceState *s = opaque;
    if ((vendor_id == s->vendor_id &&
        product_id == s->product_id) ||
        (bus_num == s->bus_num &&
        addr == s->addr)) {
        pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name);
        s->bus_num = bus_num;
        s->addr = addr;
        return 1;
    } else {
        return 0;
    }
}

/* the syntax is :
   'bus.addr' (decimal numbers) or
   'vendor_id:product_id' (hexa numbers) */
static int usb_host_find_device(int *pbus_num, int *paddr,
                                char *product_name, int product_name_size,
                                const char *devname)
{
    const char *p;
    int ret;
    FindDeviceState fs;

    p = strchr(devname, '.');
    if (p) {
        *pbus_num = strtoul(devname, NULL, 0);
        *paddr = strtoul(p + 1, NULL, 0);
        fs.bus_num = *pbus_num;
        fs.addr = *paddr;
        ret = usb_host_scan(&fs, usb_host_find_device_scan);
        if (ret)
            pstrcpy(product_name, product_name_size, fs.product_name);
        return 0;
    }
    p = strchr(devname, ':');
    if (p) {
        fs.vendor_id = strtoul(devname, NULL, 16);
        fs.product_id = strtoul(p + 1, NULL, 16);
        ret = usb_host_scan(&fs, usb_host_find_device_scan);
        if (ret) {
            *pbus_num = fs.bus_num;
            *paddr = fs.addr;
            pstrcpy(product_name, product_name_size, fs.product_name);
            return 0;
        }
    }
    return -1;
}

/**********************/
/* 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" },
    { USB_CLASS_CSCID, 	"Smart Card" },
    { USB_CLASS_CONTENT_SEC, "Content Security" },
    { -1, NULL }
};

static const char *usb_class_str(uint8_t class)
{
    const struct usb_class_info *p;
    for(p = usb_class_info; p->class != -1; p++) {
        if (p->class == class)
            break;
    }
    return p->class_name;
}

void usb_info_device(int bus_num, int addr, int class_id,
                     int vendor_id, int product_id,
                     const char *product_name,
                     int speed)
{
    const char *class_str, *speed_str;

    switch(speed) {
    case USB_SPEED_LOW:
        speed_str = "1.5";
        break;
    case USB_SPEED_FULL:
        speed_str = "12";
        break;
    case USB_SPEED_HIGH:
        speed_str = "480";
        break;
    default:
        speed_str = "?";
        break;
    }

    term_printf("  Device %d.%d, speed %s Mb/s\n",
                bus_num, addr, speed_str);
    class_str = usb_class_str(class_id);
    if (class_str)
        term_printf("    %s:", class_str);
    else
        term_printf("    Class %02x:", class_id);
    term_printf(" USB device %04x:%04x", vendor_id, product_id);
    if (product_name[0] != '\0')
        term_printf(", %s", product_name);
    term_printf("\n");
}

static int usb_host_info_device(void *opaque, int bus_num, int addr,
                                int class_id,
                                int vendor_id, int product_id,
                                const char *product_name,
                                int speed)
{
    usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
                    product_name, speed);
    return 0;
}

void usb_host_info(void)
{
    usb_host_scan(NULL, usb_host_info_device);
}

#else

void usb_host_info(void)
{
    term_printf("USB host devices not supported\n");
}

/* XXX: modify configure to compile the right host driver */
USBDevice *usb_host_device_open(const char *devname)
{
    return NULL;
}

#endif
Commit	Line	Data
bb36d470 FB	1	/*
	2	* Linux host USB redirector
	3	*
	4	* Copyright (c) 2005 Fabrice Bellard
5fafdf24	5	*
bb36d470 FB	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
	24	#include "vl.h"
	25
	26	#if defined(__linux__)
	27	#include <dirent.h>
	28	#include <sys/ioctl.h>
	29	#include <linux/usbdevice_fs.h>
	30	#include <linux/version.h>
	31
	32	/* We redefine it to avoid version problems */
	33	struct usb_ctrltransfer {
	34	uint8_t bRequestType;
	35	uint8_t bRequest;
	36	uint16_t wValue;
	37	uint16_t wIndex;
	38	uint16_t wLength;
	39	uint32_t timeout;
	40	void *data;
	41	};
	42
a594cfbf	43	typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
5fafdf24	44	int vendor_id, int product_id,
a594cfbf	45	const char *product_name, int speed);
5fafdf24	46	static int usb_host_find_device(int pbus_num, int paddr,
1f6e24e7	47	char *product_name, int product_name_size,
a594cfbf	48	const char *devname);
bb36d470	49
a594cfbf	50	//#define DEBUG
bb36d470 FB	51
bb36d470 FB	52	#define USBDEVFS_PATH "/proc/bus/usb"
1f6e24e7	53	#define PRODUCT_NAME_SZ 32
bb36d470 FB	54
	55	typedef struct USBHostDevice {
	56	USBDevice dev;
	57	int fd;
	58	} USBHostDevice;
	59
059809e4	60	static void usb_host_handle_reset(USBDevice *dev)
bb36d470 FB	61	{
	62	#if 0
	63	USBHostDevice s = (USBHostDevice )dev;
	64	/* USBDEVFS_RESET, but not the first time as it has already be
	65	done by the host OS */
	66	ioctl(s->fd, USBDEVFS_RESET);
	67	#endif
5fafdf24	68	}
bb36d470	69
059809e4 FB	70	static void usb_host_handle_destroy(USBDevice *dev)
	71	{
	72	USBHostDevice s = (USBHostDevice )dev;
	73
	74	if (s->fd >= 0)
	75	close(s->fd);
	76	qemu_free(s);
	77	}
	78
bb36d470 FB	79	static int usb_host_handle_control(USBDevice *dev,
	80	int request,
	81	int value,
	82	int index,
	83	int length,
	84	uint8_t *data)
	85	{
	86	USBHostDevice s = (USBHostDevice )dev;
	87	struct usb_ctrltransfer ct;
	88	int ret;
	89
	90	if (request == (DeviceOutRequest \| USB_REQ_SET_ADDRESS)) {
	91	/* specific SET_ADDRESS support */
	92	dev->addr = value;
	93	return 0;
	94	} else {
	95	ct.bRequestType = request >> 8;
	96	ct.bRequest = request;
	97	ct.wValue = value;
	98	ct.wIndex = index;
	99	ct.wLength = length;
	100	ct.timeout = 50;
	101	ct.data = data;
	102	ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
	103	if (ret < 0) {
	104	switch(errno) {
	105	case ETIMEDOUT:
	106	return USB_RET_NAK;
	107	default:
	108	return USB_RET_STALL;
	109	}
	110	} else {
	111	return ret;
	112	}
	113	}
	114	}
	115
4d611c9a	116	static int usb_host_handle_data(USBDevice dev, USBPacket p)
bb36d470 FB	117	{
	118	USBHostDevice s = (USBHostDevice )dev;
	119	struct usbdevfs_bulktransfer bt;
	120	int ret;
4d611c9a	121	uint8_t devep = p->devep;
bb36d470 FB	122
	123	/* XXX: optimize and handle all data types by looking at the
	124	config descriptor */
4d611c9a	125	if (p->pid == USB_TOKEN_IN)
bb36d470 FB	126	devep \|= 0x80;
bb36d470 FB	127	bt.ep = devep;
4d611c9a	128	bt.len = p->len;
bb36d470	129	bt.timeout = 50;
4d611c9a	130	bt.data = p->data;
bb36d470 FB	131	ret = ioctl(s->fd, USBDEVFS_BULK, &bt);
	132	if (ret < 0) {
	133	switch(errno) {
	134	case ETIMEDOUT:
	135	return USB_RET_NAK;
	136	case EPIPE:
	137	default:
	138	#ifdef DEBUG
	139	printf("handle_data: errno=%d\n", errno);
	140	#endif
	141	return USB_RET_STALL;
	142	}
	143	} else {
	144	return ret;
	145	}
	146	}
	147
bb36d470	148	/* XXX: exclude high speed devices or implement EHCI */
a594cfbf	149	USBDevice usb_host_device_open(const char devname)
bb36d470 FB	150	{
	151	int fd, interface, ret, i;
	152	USBHostDevice *dev;
	153	struct usbdevfs_connectinfo ci;
	154	uint8_t descr[1024];
a594cfbf	155	char buf[1024];
bb36d470	156	int descr_len, dev_descr_len, config_descr_len, nb_interfaces;
a594cfbf	157	int bus_num, addr;
1f6e24e7	158	char product_name[PRODUCT_NAME_SZ];
bb36d470	159
5fafdf24	160	if (usb_host_find_device(&bus_num, &addr,
1f6e24e7	161	product_name, sizeof(product_name),
5fafdf24	162	devname) < 0)
a594cfbf	163	return NULL;
3b46e624	164
5fafdf24	165	snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d",
a594cfbf FB	166	bus_num, addr);
a594cfbf FB	167	fd = open(buf, O_RDWR);
bb36d470	168	if (fd < 0) {
a594cfbf FB	169	perror(buf);
a594cfbf FB	170	return NULL;
bb36d470 FB	171	}
	172
	173	/* read the config description */
	174	descr_len = read(fd, descr, sizeof(descr));
	175	if (descr_len <= 0) {
	176	perror("read descr");
	177	goto fail;
	178	}
3b46e624	179
bb36d470 FB	180	i = 0;
	181	dev_descr_len = descr[0];
	182	if (dev_descr_len > descr_len)
	183	goto fail;
	184	i += dev_descr_len;
	185	config_descr_len = descr[i];
	186	if (i + config_descr_len > descr_len)
	187	goto fail;
	188	nb_interfaces = descr[i + 4];
	189	if (nb_interfaces != 1) {
	190	/* NOTE: currently we grab only one interface */
a594cfbf FB	191	fprintf(stderr, "usb_host: only one interface supported\n");
	192	goto fail;
	193	}
	194
	195	#ifdef USBDEVFS_DISCONNECT
	196	/* earlier Linux 2.4 do not support that */
868bfe2b FB	197	{
	198	struct usbdevfs_ioctl ctrl;
	199	ctrl.ioctl_code = USBDEVFS_DISCONNECT;
	200	ctrl.ifno = 0;
	201	ret = ioctl(fd, USBDEVFS_IOCTL, &ctrl);
	202	if (ret < 0 && errno != ENODATA) {
	203	perror("USBDEVFS_DISCONNECT");
	204	goto fail;
	205	}
bb36d470	206	}
a594cfbf FB	207	#endif
a594cfbf FB	208
bb36d470 FB	209	/* XXX: only grab if all interfaces are free */
	210	interface = 0;
	211	ret = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &interface);
	212	if (ret < 0) {
	213	if (errno == EBUSY) {
a594cfbf	214	fprintf(stderr, "usb_host: device already grabbed\n");
bb36d470 FB	215	} else {
	216	perror("USBDEVFS_CLAIMINTERFACE");
	217	}
	218	fail:
	219	close(fd);
a594cfbf	220	return NULL;
bb36d470 FB	221	}
	222
	223	ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
	224	if (ret < 0) {
	225	perror("USBDEVFS_CONNECTINFO");
	226	goto fail;
	227	}
	228
	229	#ifdef DEBUG
a594cfbf	230	printf("host USB device %d.%d grabbed\n", bus_num, addr);
3b46e624	231	#endif
bb36d470	232
bb36d470 FB	233	dev = qemu_mallocz(sizeof(USBHostDevice));
	234	if (!dev)
	235	goto fail;
	236	dev->fd = fd;
	237	if (ci.slow)
	238	dev->dev.speed = USB_SPEED_LOW;
	239	else
	240	dev->dev.speed = USB_SPEED_HIGH;
a594cfbf	241	dev->dev.handle_packet = usb_generic_handle_packet;
bb36d470 FB	242
	243	dev->dev.handle_reset = usb_host_handle_reset;
	244	dev->dev.handle_control = usb_host_handle_control;
	245	dev->dev.handle_data = usb_host_handle_data;
059809e4	246	dev->dev.handle_destroy = usb_host_handle_destroy;
1f6e24e7 FB	247
	248	if (product_name[0] == '\0')
	249	snprintf(dev->dev.devname, sizeof(dev->dev.devname),
	250	"host:%s", devname);
	251	else
	252	pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
	253	product_name);
	254
a594cfbf FB	255	return (USBDevice *)dev;
a594cfbf FB	256	}
bb36d470	257
a594cfbf	258	static int get_tag_value(char *buf, int buf_size,
5fafdf24	259	const char str, const char tag,
a594cfbf FB	260	const char *stopchars)
	261	{
	262	const char *p;
	263	char *q;
	264	p = strstr(str, tag);
	265	if (!p)
	266	return -1;
	267	p += strlen(tag);
	268	while (isspace(*p))
	269	p++;
	270	q = buf;
	271	while (p != '\0' && !strchr(stopchars, p)) {
	272	if ((q - buf) < (buf_size - 1))
	273	q++ = p;
	274	p++;
	275	}
	276	*q = '\0';
	277	return q - buf;
bb36d470 FB	278	}
bb36d470 FB	279
a594cfbf	280	static int usb_host_scan(void opaque, USBScanFunc func)
bb36d470	281	{
a594cfbf FB	282	FILE *f;
a594cfbf FB	283	char line[1024];
bb36d470	284	char buf[1024];
a594cfbf FB	285	int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
	286	int ret;
	287	char product_name[512];
3b46e624	288
a594cfbf FB	289	f = fopen(USBDEVFS_PATH "/devices", "r");
	290	if (!f) {
	291	term_printf("Could not open %s\n", USBDEVFS_PATH "/devices");
	292	return 0;
	293	}
	294	device_count = 0;
	295	bus_num = addr = speed = class_id = product_id = vendor_id = 0;
	296	ret = 0;
bb36d470	297	for(;;) {
a594cfbf	298	if (fgets(line, sizeof(line), f) == NULL)
bb36d470	299	break;
a594cfbf FB	300	if (strlen(line) > 0)
	301	line[strlen(line) - 1] = '\0';
	302	if (line[0] == 'T' && line[1] == ':') {
38ca0f6d PB	303	if (device_count && (vendor_id \|\| product_id)) {
38ca0f6d PB	304	/* New device. Add the previously discovered device. */
5fafdf24	305	ret = func(opaque, bus_num, addr, class_id, vendor_id,
a594cfbf FB	306	product_id, product_name, speed);
	307	if (ret)
	308	goto the_end;
	309	}
	310	if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
	311	goto fail;
	312	bus_num = atoi(buf);
	313	if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
	314	goto fail;
	315	addr = atoi(buf);
	316	if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
	317	goto fail;
	318	if (!strcmp(buf, "480"))
	319	speed = USB_SPEED_HIGH;
	320	else if (!strcmp(buf, "1.5"))
	321	speed = USB_SPEED_LOW;
	322	else
	323	speed = USB_SPEED_FULL;
	324	product_name[0] = '\0';
	325	class_id = 0xff;
	326	device_count++;
	327	product_id = 0;
	328	vendor_id = 0;
	329	} else if (line[0] == 'P' && line[1] == ':') {
	330	if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
	331	goto fail;
	332	vendor_id = strtoul(buf, NULL, 16);
	333	if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
	334	goto fail;
	335	product_id = strtoul(buf, NULL, 16);
	336	} else if (line[0] == 'S' && line[1] == ':') {
	337	if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
	338	goto fail;
	339	pstrcpy(product_name, sizeof(product_name), buf);
	340	} else if (line[0] == 'D' && line[1] == ':') {
	341	if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
	342	goto fail;
	343	class_id = strtoul(buf, NULL, 16);
bb36d470	344	}
a594cfbf FB	345	fail: ;
a594cfbf FB	346	}
38ca0f6d PB	347	if (device_count && (vendor_id \|\| product_id)) {
38ca0f6d PB	348	/* Add the last device. */
5fafdf24	349	ret = func(opaque, bus_num, addr, class_id, vendor_id,
a594cfbf	350	product_id, product_name, speed);
bb36d470	351	}
a594cfbf FB	352	the_end:
	353	fclose(f);
	354	return ret;
bb36d470 FB	355	}
bb36d470 FB	356
a594cfbf FB	357	typedef struct FindDeviceState {
	358	int vendor_id;
	359	int product_id;
	360	int bus_num;
	361	int addr;
1f6e24e7	362	char product_name[PRODUCT_NAME_SZ];
a594cfbf FB	363	} FindDeviceState;
a594cfbf FB	364
5fafdf24	365	static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
a594cfbf	366	int class_id,
5fafdf24	367	int vendor_id, int product_id,
a594cfbf	368	const char *product_name, int speed)
bb36d470	369	{
a594cfbf	370	FindDeviceState *s = opaque;
1f6e24e7 FB	371	if ((vendor_id == s->vendor_id &&
	372	product_id == s->product_id) \|\|
	373	(bus_num == s->bus_num &&
	374	addr == s->addr)) {
	375	pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name);
a594cfbf FB	376	s->bus_num = bus_num;
	377	s->addr = addr;
	378	return 1;
	379	} else {
	380	return 0;
	381	}
	382	}
bb36d470	383
5fafdf24 TS	384	/* the syntax is :
5fafdf24 TS	385	'bus.addr' (decimal numbers) or
a594cfbf	386	'vendor_id:product_id' (hexa numbers) */
5fafdf24	387	static int usb_host_find_device(int pbus_num, int paddr,
1f6e24e7	388	char *product_name, int product_name_size,
a594cfbf FB	389	const char *devname)
	390	{
	391	const char *p;
	392	int ret;
	393	FindDeviceState fs;
	394
	395	p = strchr(devname, '.');
	396	if (p) {
	397	*pbus_num = strtoul(devname, NULL, 0);
	398	*paddr = strtoul(p + 1, NULL, 0);
1f6e24e7 FB	399	fs.bus_num = *pbus_num;
	400	fs.addr = *paddr;
	401	ret = usb_host_scan(&fs, usb_host_find_device_scan);
	402	if (ret)
	403	pstrcpy(product_name, product_name_size, fs.product_name);
a594cfbf FB	404	return 0;
	405	}
	406	p = strchr(devname, ':');
	407	if (p) {
	408	fs.vendor_id = strtoul(devname, NULL, 16);
	409	fs.product_id = strtoul(p + 1, NULL, 16);
	410	ret = usb_host_scan(&fs, usb_host_find_device_scan);
	411	if (ret) {
	412	*pbus_num = fs.bus_num;
	413	*paddr = fs.addr;
1f6e24e7	414	pstrcpy(product_name, product_name_size, fs.product_name);
a594cfbf	415	return 0;
bb36d470 FB	416	}
bb36d470 FB	417	}
a594cfbf	418	return -1;
bb36d470 FB	419	}
bb36d470 FB	420
a594cfbf FB	421	/**********************/
	422	/* USB host device info */
	423
	424	struct usb_class_info {
	425	int class;
	426	const char *class_name;
	427	};
	428
	429	static const struct usb_class_info usb_class_info[] = {
	430	{ USB_CLASS_AUDIO, "Audio"},
	431	{ USB_CLASS_COMM, "Communication"},
	432	{ USB_CLASS_HID, "HID"},
	433	{ USB_CLASS_HUB, "Hub" },
	434	{ USB_CLASS_PHYSICAL, "Physical" },
	435	{ USB_CLASS_PRINTER, "Printer" },
	436	{ USB_CLASS_MASS_STORAGE, "Storage" },
	437	{ USB_CLASS_CDC_DATA, "Data" },
	438	{ USB_CLASS_APP_SPEC, "Application Specific" },
	439	{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
	440	{ USB_CLASS_STILL_IMAGE, "Still Image" },
	441	{ USB_CLASS_CSCID, "Smart Card" },
	442	{ USB_CLASS_CONTENT_SEC, "Content Security" },
	443	{ -1, NULL }
	444	};
	445
	446	static const char *usb_class_str(uint8_t class)
bb36d470	447	{
a594cfbf FB	448	const struct usb_class_info *p;
	449	for(p = usb_class_info; p->class != -1; p++) {
	450	if (p->class == class)
	451	break;
bb36d470	452	}
a594cfbf FB	453	return p->class_name;
	454	}
	455
	456	void usb_info_device(int bus_num, int addr, int class_id,
5fafdf24	457	int vendor_id, int product_id,
a594cfbf FB	458	const char *product_name,
	459	int speed)
	460	{
	461	const char class_str, speed_str;
	462
	463	switch(speed) {
5fafdf24 TS	464	case USB_SPEED_LOW:
5fafdf24 TS	465	speed_str = "1.5";
a594cfbf	466	break;
5fafdf24 TS	467	case USB_SPEED_FULL:
5fafdf24 TS	468	speed_str = "12";
a594cfbf	469	break;
5fafdf24 TS	470	case USB_SPEED_HIGH:
5fafdf24 TS	471	speed_str = "480";
a594cfbf FB	472	break;
a594cfbf FB	473	default:
5fafdf24	474	speed_str = "?";
a594cfbf FB	475	break;
	476	}
	477
5fafdf24	478	term_printf(" Device %d.%d, speed %s Mb/s\n",
a594cfbf FB	479	bus_num, addr, speed_str);
a594cfbf FB	480	class_str = usb_class_str(class_id);
5fafdf24	481	if (class_str)
a594cfbf FB	482	term_printf(" %s:", class_str);
	483	else
	484	term_printf(" Class %02x:", class_id);
	485	term_printf(" USB device %04x:%04x", vendor_id, product_id);
	486	if (product_name[0] != '\0')
	487	term_printf(", %s", product_name);
	488	term_printf("\n");
	489	}
	490
5fafdf24	491	static int usb_host_info_device(void *opaque, int bus_num, int addr,
a594cfbf	492	int class_id,
5fafdf24	493	int vendor_id, int product_id,
a594cfbf FB	494	const char *product_name,
	495	int speed)
	496	{
	497	usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
	498	product_name, speed);
	499	return 0;
	500	}
	501
	502	void usb_host_info(void)
	503	{
	504	usb_host_scan(NULL, usb_host_info_device);
bb36d470 FB	505	}
	506
	507	#else
	508
a594cfbf FB	509	void usb_host_info(void)
	510	{
	511	term_printf("USB host devices not supported\n");
	512	}
	513
bb36d470	514	/* XXX: modify configure to compile the right host driver */
a594cfbf	515	USBDevice usb_host_device_open(const char devname)
bb36d470 FB	516	{
	517	return NULL;
	518	}
	519
	520	#endif