[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, int destroy)
{
#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;
    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;

    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
	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,
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
2e5d83bb	60	static void usb_host_handle_reset(USBDevice *dev, int destroy)
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
	68	}
	69
	70	static int usb_host_handle_control(USBDevice *dev,
	71	int request,
	72	int value,
	73	int index,
	74	int length,
	75	uint8_t *data)
	76	{
	77	USBHostDevice s = (USBHostDevice )dev;
	78	struct usb_ctrltransfer ct;
	79	int ret;
	80
	81	if (request == (DeviceOutRequest \| USB_REQ_SET_ADDRESS)) {
	82	/* specific SET_ADDRESS support */
	83	dev->addr = value;
	84	return 0;
	85	} else {
	86	ct.bRequestType = request >> 8;
	87	ct.bRequest = request;
	88	ct.wValue = value;
	89	ct.wIndex = index;
	90	ct.wLength = length;
	91	ct.timeout = 50;
	92	ct.data = data;
	93	ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
	94	if (ret < 0) {
	95	switch(errno) {
	96	case ETIMEDOUT:
	97	return USB_RET_NAK;
	98	default:
	99	return USB_RET_STALL;
	100	}
	101	} else {
	102	return ret;
	103	}
	104	}
	105	}
	106
	107	static int usb_host_handle_data(USBDevice *dev, int pid,
	108	uint8_t devep,
	109	uint8_t *data, int len)
	110	{
	111	USBHostDevice s = (USBHostDevice )dev;
	112	struct usbdevfs_bulktransfer bt;
	113	int ret;
	114
	115	/* XXX: optimize and handle all data types by looking at the
	116	config descriptor */
	117	if (pid == USB_TOKEN_IN)
	118	devep \|= 0x80;
	119	bt.ep = devep;
	120	bt.len = len;
	121	bt.timeout = 50;
	122	bt.data = data;
	123	ret = ioctl(s->fd, USBDEVFS_BULK, &bt);
	124	if (ret < 0) {
125	switch(errno) {
126	case ETIMEDOUT:
127	return USB_RET_NAK;
128	case EPIPE:
129	default:
130	#ifdef DEBUG
131	printf("handle_data: errno=%d\n", errno);
132	#endif
133	return USB_RET_STALL;
134	}
135	} else {
136	return ret;
137	}
138	}
139
bb36d470	140	/* XXX: exclude high speed devices or implement EHCI */
a594cfbf	141	USBDevice usb_host_device_open(const char devname)
bb36d470 FB	142	{
	143	int fd, interface, ret, i;
	144	USBHostDevice *dev;
	145	struct usbdevfs_connectinfo ci;
	146	uint8_t descr[1024];
a594cfbf	147	char buf[1024];
bb36d470	148	int descr_len, dev_descr_len, config_descr_len, nb_interfaces;
a594cfbf	149	int bus_num, addr;
1f6e24e7	150	char product_name[PRODUCT_NAME_SZ];
bb36d470	151
1f6e24e7 FB	152	if (usb_host_find_device(&bus_num, &addr,
	153	product_name, sizeof(product_name),
	154	devname) < 0)
a594cfbf FB	155	return NULL;
	156
	157	snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d",
	158	bus_num, addr);
	159	fd = open(buf, O_RDWR);
bb36d470	160	if (fd < 0) {
a594cfbf FB	161	perror(buf);
a594cfbf FB	162	return NULL;
bb36d470 FB	163	}
	164
	165	/* read the config description */
	166	descr_len = read(fd, descr, sizeof(descr));
	167	if (descr_len <= 0) {
	168	perror("read descr");
	169	goto fail;
	170	}
	171
	172	i = 0;
	173	dev_descr_len = descr[0];
	174	if (dev_descr_len > descr_len)
	175	goto fail;
	176	i += dev_descr_len;
	177	config_descr_len = descr[i];
	178	if (i + config_descr_len > descr_len)
	179	goto fail;
	180	nb_interfaces = descr[i + 4];
	181	if (nb_interfaces != 1) {
	182	/* NOTE: currently we grab only one interface */
a594cfbf FB	183	fprintf(stderr, "usb_host: only one interface supported\n");
	184	goto fail;
	185	}
	186
	187	#ifdef USBDEVFS_DISCONNECT
	188	/* earlier Linux 2.4 do not support that */
868bfe2b FB	189	{
	190	struct usbdevfs_ioctl ctrl;
	191	ctrl.ioctl_code = USBDEVFS_DISCONNECT;
	192	ctrl.ifno = 0;
	193	ret = ioctl(fd, USBDEVFS_IOCTL, &ctrl);
	194	if (ret < 0 && errno != ENODATA) {
	195	perror("USBDEVFS_DISCONNECT");
	196	goto fail;
	197	}
bb36d470	198	}
a594cfbf FB	199	#endif
a594cfbf FB	200
bb36d470 FB	201	/* XXX: only grab if all interfaces are free */
	202	interface = 0;
	203	ret = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &interface);
	204	if (ret < 0) {
	205	if (errno == EBUSY) {
a594cfbf	206	fprintf(stderr, "usb_host: device already grabbed\n");
bb36d470 FB	207	} else {
	208	perror("USBDEVFS_CLAIMINTERFACE");
	209	}
	210	fail:
	211	close(fd);
a594cfbf	212	return NULL;
bb36d470 FB	213	}
	214
	215	ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
	216	if (ret < 0) {
	217	perror("USBDEVFS_CONNECTINFO");
	218	goto fail;
	219	}
	220
	221	#ifdef DEBUG
a594cfbf	222	printf("host USB device %d.%d grabbed\n", bus_num, addr);
bb36d470 FB	223	#endif
bb36d470 FB	224
bb36d470 FB	225	dev = qemu_mallocz(sizeof(USBHostDevice));
	226	if (!dev)
	227	goto fail;
	228	dev->fd = fd;
	229	if (ci.slow)
	230	dev->dev.speed = USB_SPEED_LOW;
	231	else
	232	dev->dev.speed = USB_SPEED_HIGH;
a594cfbf	233	dev->dev.handle_packet = usb_generic_handle_packet;
bb36d470 FB	234
	235	dev->dev.handle_reset = usb_host_handle_reset;
	236	dev->dev.handle_control = usb_host_handle_control;
	237	dev->dev.handle_data = usb_host_handle_data;
1f6e24e7 FB	238
	239	if (product_name[0] == '\0')
	240	snprintf(dev->dev.devname, sizeof(dev->dev.devname),
	241	"host:%s", devname);
	242	else
	243	pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
	244	product_name);
	245
a594cfbf FB	246	return (USBDevice *)dev;
a594cfbf FB	247	}
bb36d470	248
a594cfbf FB	249	static int get_tag_value(char *buf, int buf_size,
	250	const char str, const char tag,
	251	const char *stopchars)
	252	{
	253	const char *p;
	254	char *q;
	255	p = strstr(str, tag);
	256	if (!p)
	257	return -1;
	258	p += strlen(tag);
	259	while (isspace(*p))
	260	p++;
	261	q = buf;
	262	while (p != '\0' && !strchr(stopchars, p)) {
	263	if ((q - buf) < (buf_size - 1))
	264	q++ = p;
	265	p++;
	266	}
	267	*q = '\0';
	268	return q - buf;
bb36d470 FB	269	}
bb36d470 FB	270
a594cfbf	271	static int usb_host_scan(void opaque, USBScanFunc func)
bb36d470	272	{
a594cfbf FB	273	FILE *f;
a594cfbf FB	274	char line[1024];
bb36d470	275	char buf[1024];
a594cfbf FB	276	int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
	277	int ret;
	278	char product_name[512];
	279
	280	f = fopen(USBDEVFS_PATH "/devices", "r");
	281	if (!f) {
	282	term_printf("Could not open %s\n", USBDEVFS_PATH "/devices");
	283	return 0;
	284	}
	285	device_count = 0;
	286	bus_num = addr = speed = class_id = product_id = vendor_id = 0;
	287	ret = 0;
bb36d470	288	for(;;) {
a594cfbf	289	if (fgets(line, sizeof(line), f) == NULL)
bb36d470	290	break;
a594cfbf FB	291	if (strlen(line) > 0)
	292	line[strlen(line) - 1] = '\0';
	293	if (line[0] == 'T' && line[1] == ':') {
38ca0f6d PB	294	if (device_count && (vendor_id \|\| product_id)) {
38ca0f6d PB	295	/* New device. Add the previously discovered device. */
a594cfbf FB	296	ret = func(opaque, bus_num, addr, class_id, vendor_id,
	297	product_id, product_name, speed);
	298	if (ret)
	299	goto the_end;
	300	}
	301	if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
	302	goto fail;
	303	bus_num = atoi(buf);
	304	if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
	305	goto fail;
	306	addr = atoi(buf);
	307	if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
	308	goto fail;
	309	if (!strcmp(buf, "480"))
	310	speed = USB_SPEED_HIGH;
	311	else if (!strcmp(buf, "1.5"))
	312	speed = USB_SPEED_LOW;
	313	else
	314	speed = USB_SPEED_FULL;
	315	product_name[0] = '\0';
	316	class_id = 0xff;
	317	device_count++;
	318	product_id = 0;
	319	vendor_id = 0;
	320	} else if (line[0] == 'P' && line[1] == ':') {
	321	if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
	322	goto fail;
	323	vendor_id = strtoul(buf, NULL, 16);
	324	if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
	325	goto fail;
	326	product_id = strtoul(buf, NULL, 16);
	327	} else if (line[0] == 'S' && line[1] == ':') {
	328	if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
	329	goto fail;
	330	pstrcpy(product_name, sizeof(product_name), buf);
	331	} else if (line[0] == 'D' && line[1] == ':') {
	332	if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
	333	goto fail;
	334	class_id = strtoul(buf, NULL, 16);
bb36d470	335	}
a594cfbf FB	336	fail: ;
a594cfbf FB	337	}
38ca0f6d PB	338	if (device_count && (vendor_id \|\| product_id)) {
38ca0f6d PB	339	/* Add the last device. */
a594cfbf FB	340	ret = func(opaque, bus_num, addr, class_id, vendor_id,
a594cfbf FB	341	product_id, product_name, speed);
bb36d470	342	}
a594cfbf FB	343	the_end:
	344	fclose(f);
	345	return ret;
bb36d470 FB	346	}
bb36d470 FB	347
a594cfbf FB	348	typedef struct FindDeviceState {
	349	int vendor_id;
	350	int product_id;
	351	int bus_num;
	352	int addr;
1f6e24e7	353	char product_name[PRODUCT_NAME_SZ];
a594cfbf FB	354	} FindDeviceState;
	355
	356	static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
	357	int class_id,
	358	int vendor_id, int product_id,
	359	const char *product_name, int speed)
bb36d470	360	{
a594cfbf	361	FindDeviceState *s = opaque;
1f6e24e7 FB	362	if ((vendor_id == s->vendor_id &&
	363	product_id == s->product_id) \|\|
	364	(bus_num == s->bus_num &&
	365	addr == s->addr)) {
	366	pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name);
a594cfbf FB	367	s->bus_num = bus_num;
	368	s->addr = addr;
	369	return 1;
	370	} else {
	371	return 0;
	372	}
	373	}
bb36d470	374
a594cfbf FB	375	/* the syntax is :
	376	'bus.addr' (decimal numbers) or
	377	'vendor_id:product_id' (hexa numbers) */
	378	static int usb_host_find_device(int pbus_num, int paddr,
1f6e24e7	379	char *product_name, int product_name_size,
a594cfbf FB	380	const char *devname)
	381	{
	382	const char *p;
	383	int ret;
	384	FindDeviceState fs;
	385
	386	p = strchr(devname, '.');
	387	if (p) {
	388	*pbus_num = strtoul(devname, NULL, 0);
	389	*paddr = strtoul(p + 1, NULL, 0);
1f6e24e7 FB	390	fs.bus_num = *pbus_num;
	391	fs.addr = *paddr;
	392	ret = usb_host_scan(&fs, usb_host_find_device_scan);
	393	if (ret)
	394	pstrcpy(product_name, product_name_size, fs.product_name);
a594cfbf FB	395	return 0;
	396	}
	397	p = strchr(devname, ':');
	398	if (p) {
	399	fs.vendor_id = strtoul(devname, NULL, 16);
	400	fs.product_id = strtoul(p + 1, NULL, 16);
	401	ret = usb_host_scan(&fs, usb_host_find_device_scan);
	402	if (ret) {
	403	*pbus_num = fs.bus_num;
	404	*paddr = fs.addr;
1f6e24e7	405	pstrcpy(product_name, product_name_size, fs.product_name);
a594cfbf	406	return 0;
bb36d470 FB	407	}
bb36d470 FB	408	}
a594cfbf	409	return -1;
bb36d470 FB	410	}
bb36d470 FB	411
a594cfbf FB	412	/**********************/
	413	/* USB host device info */
	414
	415	struct usb_class_info {
	416	int class;
	417	const char *class_name;
	418	};
	419
	420	static const struct usb_class_info usb_class_info[] = {
	421	{ USB_CLASS_AUDIO, "Audio"},
	422	{ USB_CLASS_COMM, "Communication"},
	423	{ USB_CLASS_HID, "HID"},
	424	{ USB_CLASS_HUB, "Hub" },
	425	{ USB_CLASS_PHYSICAL, "Physical" },
	426	{ USB_CLASS_PRINTER, "Printer" },
	427	{ USB_CLASS_MASS_STORAGE, "Storage" },
	428	{ USB_CLASS_CDC_DATA, "Data" },
	429	{ USB_CLASS_APP_SPEC, "Application Specific" },
	430	{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
	431	{ USB_CLASS_STILL_IMAGE, "Still Image" },
	432	{ USB_CLASS_CSCID, "Smart Card" },
	433	{ USB_CLASS_CONTENT_SEC, "Content Security" },
	434	{ -1, NULL }
	435	};
	436
	437	static const char *usb_class_str(uint8_t class)
bb36d470	438	{
a594cfbf FB	439	const struct usb_class_info *p;
	440	for(p = usb_class_info; p->class != -1; p++) {
	441	if (p->class == class)
	442	break;
bb36d470	443	}
a594cfbf FB	444	return p->class_name;
	445	}
	446
	447	void usb_info_device(int bus_num, int addr, int class_id,
	448	int vendor_id, int product_id,
	449	const char *product_name,
	450	int speed)
	451	{
	452	const char class_str, speed_str;
	453
	454	switch(speed) {
	455	case USB_SPEED_LOW:
	456	speed_str = "1.5";
	457	break;
	458	case USB_SPEED_FULL:
	459	speed_str = "12";
	460	break;
	461	case USB_SPEED_HIGH:
	462	speed_str = "480";
	463	break;
	464	default:
	465	speed_str = "?";
	466	break;
	467	}
	468
	469	term_printf(" Device %d.%d, speed %s Mb/s\n",
	470	bus_num, addr, speed_str);
	471	class_str = usb_class_str(class_id);
	472	if (class_str)
	473	term_printf(" %s:", class_str);
	474	else
	475	term_printf(" Class %02x:", class_id);
	476	term_printf(" USB device %04x:%04x", vendor_id, product_id);
	477	if (product_name[0] != '\0')
	478	term_printf(", %s", product_name);
	479	term_printf("\n");
	480	}
	481
	482	static int usb_host_info_device(void *opaque, int bus_num, int addr,
	483	int class_id,
	484	int vendor_id, int product_id,
	485	const char *product_name,
	486	int speed)
	487	{
	488	usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
	489	product_name, speed);
	490	return 0;
	491	}
	492
	493	void usb_host_info(void)
	494	{
	495	usb_host_scan(NULL, usb_host_info_device);
bb36d470 FB	496	}
	497
	498	#else
	499
a594cfbf FB	500	void usb_host_info(void)
	501	{
	502	term_printf("USB host devices not supported\n");
	503	}
	504
bb36d470	505	/* XXX: modify configure to compile the right host driver */
a594cfbf	506	USBDevice usb_host_device_open(const char devname)
bb36d470 FB	507	{
	508	return NULL;
	509	}
	510
	511	#endif