[mirror_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, 
                                const char *devname);

//#define DEBUG

#define USBDEVFS_PATH "/proc/bus/usb"

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 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, int pid, 
                                uint8_t devep,
                                uint8_t *data, int len)
{
    USBHostDevice *s = (USBHostDevice *)dev;
    struct usbdevfs_bulktransfer bt;
    int ret;

    /* XXX: optimize and handle all data types by looking at the
       config descriptor */
    if (pid == USB_TOKEN_IN)
        devep |= 0x80;
    bt.ep = devep;
    bt.len = len;
    bt.timeout = 50;
    bt.data = 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;

    if (usb_host_find_device(&bus_num, &addr, 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 */
    ret = ioctl(fd, USBDEVFS_DISCONNECT);
    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;
    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) {
                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) {
        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;
} 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) {
        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, 
                                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);
        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;
            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
	5	*
	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 FB	43	typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
	44	int vendor_id, int product_id,
	45	const char *product_name, int speed);
	46	static int usb_host_find_device(int pbus_num, int paddr,
	47	const char *devname);
bb36d470	48
a594cfbf	49	//#define DEBUG
bb36d470 FB	50
	51	#define USBDEVFS_PATH "/proc/bus/usb"
	52
	53	typedef struct USBHostDevice {
	54	USBDevice dev;
	55	int fd;
	56	} USBHostDevice;
	57
bb36d470 FB	58	static void usb_host_handle_reset(USBDevice *dev)
	59	{
	60	#if 0
	61	USBHostDevice s = (USBHostDevice )dev;
	62	/* USBDEVFS_RESET, but not the first time as it has already be
	63	done by the host OS */
	64	ioctl(s->fd, USBDEVFS_RESET);
	65	#endif
	66	}
	67
	68	static int usb_host_handle_control(USBDevice *dev,
	69	int request,
	70	int value,
	71	int index,
	72	int length,
	73	uint8_t *data)
	74	{
	75	USBHostDevice s = (USBHostDevice )dev;
	76	struct usb_ctrltransfer ct;
	77	int ret;
	78
	79	if (request == (DeviceOutRequest \| USB_REQ_SET_ADDRESS)) {
	80	/* specific SET_ADDRESS support */
	81	dev->addr = value;
	82	return 0;
	83	} else {
	84	ct.bRequestType = request >> 8;
	85	ct.bRequest = request;
	86	ct.wValue = value;
	87	ct.wIndex = index;
	88	ct.wLength = length;
	89	ct.timeout = 50;
	90	ct.data = data;
	91	ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
	92	if (ret < 0) {
	93	switch(errno) {
	94	case ETIMEDOUT:
	95	return USB_RET_NAK;
	96	default:
	97	return USB_RET_STALL;
	98	}
	99	} else {
	100	return ret;
	101	}
	102	}
	103	}
	104
	105	static int usb_host_handle_data(USBDevice *dev, int pid,
	106	uint8_t devep,
	107	uint8_t *data, int len)
	108	{
	109	USBHostDevice s = (USBHostDevice )dev;
	110	struct usbdevfs_bulktransfer bt;
	111	int ret;
	112
	113	/* XXX: optimize and handle all data types by looking at the
	114	config descriptor */
	115	if (pid == USB_TOKEN_IN)
	116	devep \|= 0x80;
	117	bt.ep = devep;
	118	bt.len = len;
	119	bt.timeout = 50;
	120	bt.data = data;
	121	ret = ioctl(s->fd, USBDEVFS_BULK, &bt);
122	if (ret < 0) {
123	switch(errno) {
124	case ETIMEDOUT:
125	return USB_RET_NAK;
126	case EPIPE:
127	default:
128	#ifdef DEBUG
129	printf("handle_data: errno=%d\n", errno);
130	#endif
131	return USB_RET_STALL;
132	}
133	} else {
134	return ret;
135	}
136	}
137
bb36d470	138	/* XXX: exclude high speed devices or implement EHCI */
a594cfbf	139	USBDevice usb_host_device_open(const char devname)
bb36d470 FB	140	{
	141	int fd, interface, ret, i;
	142	USBHostDevice *dev;
	143	struct usbdevfs_connectinfo ci;
	144	uint8_t descr[1024];
a594cfbf	145	char buf[1024];
bb36d470	146	int descr_len, dev_descr_len, config_descr_len, nb_interfaces;
a594cfbf	147	int bus_num, addr;
bb36d470	148
a594cfbf FB	149	if (usb_host_find_device(&bus_num, &addr, devname) < 0)
	150	return NULL;
	151
	152	snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d",
	153	bus_num, addr);
	154	fd = open(buf, O_RDWR);
bb36d470	155	if (fd < 0) {
a594cfbf FB	156	perror(buf);
a594cfbf FB	157	return NULL;
bb36d470 FB	158	}
	159
	160	/* read the config description */
	161	descr_len = read(fd, descr, sizeof(descr));
	162	if (descr_len <= 0) {
	163	perror("read descr");
	164	goto fail;
	165	}
	166
	167	i = 0;
	168	dev_descr_len = descr[0];
	169	if (dev_descr_len > descr_len)
	170	goto fail;
	171	i += dev_descr_len;
	172	config_descr_len = descr[i];
	173	if (i + config_descr_len > descr_len)
	174	goto fail;
	175	nb_interfaces = descr[i + 4];
	176	if (nb_interfaces != 1) {
	177	/* NOTE: currently we grab only one interface */
a594cfbf FB	178	fprintf(stderr, "usb_host: only one interface supported\n");
	179	goto fail;
	180	}
	181
	182	#ifdef USBDEVFS_DISCONNECT
	183	/* earlier Linux 2.4 do not support that */
	184	ret = ioctl(fd, USBDEVFS_DISCONNECT);
	185	if (ret < 0 && errno != ENODATA) {
	186	perror("USBDEVFS_DISCONNECT");
bb36d470 FB	187	goto fail;
bb36d470 FB	188	}
a594cfbf FB	189	#endif
a594cfbf FB	190
bb36d470 FB	191	/* XXX: only grab if all interfaces are free */
	192	interface = 0;
	193	ret = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &interface);
	194	if (ret < 0) {
	195	if (errno == EBUSY) {
a594cfbf	196	fprintf(stderr, "usb_host: device already grabbed\n");
bb36d470 FB	197	} else {
	198	perror("USBDEVFS_CLAIMINTERFACE");
	199	}
	200	fail:
	201	close(fd);
a594cfbf	202	return NULL;
bb36d470 FB	203	}
	204
	205	ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
	206	if (ret < 0) {
	207	perror("USBDEVFS_CONNECTINFO");
	208	goto fail;
	209	}
	210
	211	#ifdef DEBUG
a594cfbf	212	printf("host USB device %d.%d grabbed\n", bus_num, addr);
bb36d470 FB	213	#endif
bb36d470 FB	214
bb36d470 FB	215	dev = qemu_mallocz(sizeof(USBHostDevice));
	216	if (!dev)
	217	goto fail;
	218	dev->fd = fd;
	219	if (ci.slow)
	220	dev->dev.speed = USB_SPEED_LOW;
	221	else
	222	dev->dev.speed = USB_SPEED_HIGH;
a594cfbf	223	dev->dev.handle_packet = usb_generic_handle_packet;
bb36d470 FB	224
	225	dev->dev.handle_reset = usb_host_handle_reset;
	226	dev->dev.handle_control = usb_host_handle_control;
	227	dev->dev.handle_data = usb_host_handle_data;
a594cfbf FB	228	return (USBDevice *)dev;
a594cfbf FB	229	}
bb36d470	230
a594cfbf FB	231	static int get_tag_value(char *buf, int buf_size,
	232	const char str, const char tag,
	233	const char *stopchars)
	234	{
	235	const char *p;
	236	char *q;
	237	p = strstr(str, tag);
	238	if (!p)
	239	return -1;
	240	p += strlen(tag);
	241	while (isspace(*p))
	242	p++;
	243	q = buf;
	244	while (p != '\0' && !strchr(stopchars, p)) {
	245	if ((q - buf) < (buf_size - 1))
	246	q++ = p;
	247	p++;
	248	}
	249	*q = '\0';
	250	return q - buf;
bb36d470 FB	251	}
bb36d470 FB	252
a594cfbf	253	static int usb_host_scan(void opaque, USBScanFunc func)
bb36d470	254	{
a594cfbf FB	255	FILE *f;
a594cfbf FB	256	char line[1024];
bb36d470	257	char buf[1024];
a594cfbf FB	258	int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
	259	int ret;
	260	char product_name[512];
	261
	262	f = fopen(USBDEVFS_PATH "/devices", "r");
	263	if (!f) {
	264	term_printf("Could not open %s\n", USBDEVFS_PATH "/devices");
	265	return 0;
	266	}
	267	device_count = 0;
	268	bus_num = addr = speed = class_id = product_id = vendor_id = 0;
	269	ret = 0;
bb36d470	270	for(;;) {
a594cfbf	271	if (fgets(line, sizeof(line), f) == NULL)
bb36d470	272	break;
a594cfbf FB	273	if (strlen(line) > 0)
	274	line[strlen(line) - 1] = '\0';
	275	if (line[0] == 'T' && line[1] == ':') {
	276	if (device_count) {
	277	ret = func(opaque, bus_num, addr, class_id, vendor_id,
	278	product_id, product_name, speed);
	279	if (ret)
	280	goto the_end;
	281	}
	282	if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
	283	goto fail;
	284	bus_num = atoi(buf);
	285	if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
	286	goto fail;
	287	addr = atoi(buf);
	288	if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
	289	goto fail;
	290	if (!strcmp(buf, "480"))
	291	speed = USB_SPEED_HIGH;
	292	else if (!strcmp(buf, "1.5"))
	293	speed = USB_SPEED_LOW;
	294	else
	295	speed = USB_SPEED_FULL;
	296	product_name[0] = '\0';
	297	class_id = 0xff;
	298	device_count++;
	299	product_id = 0;
	300	vendor_id = 0;
	301	} else if (line[0] == 'P' && line[1] == ':') {
	302	if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
	303	goto fail;
	304	vendor_id = strtoul(buf, NULL, 16);
	305	if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
	306	goto fail;
	307	product_id = strtoul(buf, NULL, 16);
	308	} else if (line[0] == 'S' && line[1] == ':') {
	309	if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
	310	goto fail;
	311	pstrcpy(product_name, sizeof(product_name), buf);
	312	} else if (line[0] == 'D' && line[1] == ':') {
	313	if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
	314	goto fail;
	315	class_id = strtoul(buf, NULL, 16);
bb36d470	316	}
a594cfbf FB	317	fail: ;
	318	}
	319	if (device_count) {
	320	ret = func(opaque, bus_num, addr, class_id, vendor_id,
	321	product_id, product_name, speed);
bb36d470	322	}
a594cfbf FB	323	the_end:
	324	fclose(f);
	325	return ret;
bb36d470 FB	326	}
bb36d470 FB	327
a594cfbf FB	328	typedef struct FindDeviceState {
	329	int vendor_id;
	330	int product_id;
	331	int bus_num;
	332	int addr;
	333	} FindDeviceState;
	334
	335	static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
	336	int class_id,
	337	int vendor_id, int product_id,
	338	const char *product_name, int speed)
bb36d470	339	{
a594cfbf FB	340	FindDeviceState *s = opaque;
	341	if (vendor_id == s->vendor_id &&
	342	product_id == s->product_id) {
	343	s->bus_num = bus_num;
	344	s->addr = addr;
	345	return 1;
	346	} else {
	347	return 0;
	348	}
	349	}
bb36d470	350
a594cfbf FB	351	/* the syntax is :
	352	'bus.addr' (decimal numbers) or
	353	'vendor_id:product_id' (hexa numbers) */
	354	static int usb_host_find_device(int pbus_num, int paddr,
	355	const char *devname)
	356	{
	357	const char *p;
	358	int ret;
	359	FindDeviceState fs;
	360
	361	p = strchr(devname, '.');
	362	if (p) {
	363	*pbus_num = strtoul(devname, NULL, 0);
	364	*paddr = strtoul(p + 1, NULL, 0);
	365	return 0;
	366	}
	367	p = strchr(devname, ':');
	368	if (p) {
	369	fs.vendor_id = strtoul(devname, NULL, 16);
	370	fs.product_id = strtoul(p + 1, NULL, 16);
	371	ret = usb_host_scan(&fs, usb_host_find_device_scan);
	372	if (ret) {
	373	*pbus_num = fs.bus_num;
	374	*paddr = fs.addr;
	375	return 0;
bb36d470 FB	376	}
bb36d470 FB	377	}
a594cfbf	378	return -1;
bb36d470 FB	379	}
bb36d470 FB	380
a594cfbf FB	381	/**********************/
	382	/* USB host device info */
	383
	384	struct usb_class_info {
	385	int class;
	386	const char *class_name;
	387	};
	388
	389	static const struct usb_class_info usb_class_info[] = {
	390	{ USB_CLASS_AUDIO, "Audio"},
	391	{ USB_CLASS_COMM, "Communication"},
	392	{ USB_CLASS_HID, "HID"},
	393	{ USB_CLASS_HUB, "Hub" },
	394	{ USB_CLASS_PHYSICAL, "Physical" },
	395	{ USB_CLASS_PRINTER, "Printer" },
	396	{ USB_CLASS_MASS_STORAGE, "Storage" },
	397	{ USB_CLASS_CDC_DATA, "Data" },
	398	{ USB_CLASS_APP_SPEC, "Application Specific" },
	399	{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
	400	{ USB_CLASS_STILL_IMAGE, "Still Image" },
	401	{ USB_CLASS_CSCID, "Smart Card" },
	402	{ USB_CLASS_CONTENT_SEC, "Content Security" },
	403	{ -1, NULL }
	404	};
	405
	406	static const char *usb_class_str(uint8_t class)
bb36d470	407	{
a594cfbf FB	408	const struct usb_class_info *p;
	409	for(p = usb_class_info; p->class != -1; p++) {
	410	if (p->class == class)
	411	break;
bb36d470	412	}
a594cfbf FB	413	return p->class_name;
	414	}
	415
	416	void usb_info_device(int bus_num, int addr, int class_id,
	417	int vendor_id, int product_id,
	418	const char *product_name,
	419	int speed)
	420	{
	421	const char class_str, speed_str;
	422
	423	switch(speed) {
	424	case USB_SPEED_LOW:
	425	speed_str = "1.5";
	426	break;
	427	case USB_SPEED_FULL:
	428	speed_str = "12";
	429	break;
	430	case USB_SPEED_HIGH:
	431	speed_str = "480";
	432	break;
	433	default:
	434	speed_str = "?";
	435	break;
	436	}
	437
	438	term_printf(" Device %d.%d, speed %s Mb/s\n",
	439	bus_num, addr, speed_str);
	440	class_str = usb_class_str(class_id);
	441	if (class_str)
	442	term_printf(" %s:", class_str);
	443	else
	444	term_printf(" Class %02x:", class_id);
	445	term_printf(" USB device %04x:%04x", vendor_id, product_id);
	446	if (product_name[0] != '\0')
	447	term_printf(", %s", product_name);
	448	term_printf("\n");
	449	}
	450
	451	static int usb_host_info_device(void *opaque, int bus_num, int addr,
	452	int class_id,
	453	int vendor_id, int product_id,
	454	const char *product_name,
	455	int speed)
	456	{
	457	usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
	458	product_name, speed);
	459	return 0;
	460	}
	461
	462	void usb_host_info(void)
	463	{
	464	usb_host_scan(NULL, usb_host_info_device);
bb36d470 FB	465	}
	466
	467	#else
	468
a594cfbf FB	469	void usb_host_info(void)
	470	{
	471	term_printf("USB host devices not supported\n");
	472	}
	473
bb36d470	474	/* XXX: modify configure to compile the right host driver */
a594cfbf	475	USBDevice usb_host_device_open(const char devname)
bb36d470 FB	476	{
	477	return NULL;
	478	}
	479
	480	#endif