[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, 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;

    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 */
    {
        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;
    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;
} 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
2e5d83bb	58	static void usb_host_handle_reset(USBDevice *dev, int destroy)
bb36d470 FB	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 */
868bfe2b FB	184	{
	185	struct usbdevfs_ioctl ctrl;
	186	ctrl.ioctl_code = USBDEVFS_DISCONNECT;
	187	ctrl.ifno = 0;
	188	ret = ioctl(fd, USBDEVFS_IOCTL, &ctrl);
	189	if (ret < 0 && errno != ENODATA) {
	190	perror("USBDEVFS_DISCONNECT");
	191	goto fail;
	192	}
bb36d470	193	}
a594cfbf FB	194	#endif
a594cfbf FB	195
bb36d470 FB	196	/* XXX: only grab if all interfaces are free */
	197	interface = 0;
	198	ret = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &interface);
	199	if (ret < 0) {
	200	if (errno == EBUSY) {
a594cfbf	201	fprintf(stderr, "usb_host: device already grabbed\n");
bb36d470 FB	202	} else {
	203	perror("USBDEVFS_CLAIMINTERFACE");
	204	}
	205	fail:
	206	close(fd);
a594cfbf	207	return NULL;
bb36d470 FB	208	}
	209
	210	ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
	211	if (ret < 0) {
	212	perror("USBDEVFS_CONNECTINFO");
	213	goto fail;
	214	}
	215
	216	#ifdef DEBUG
a594cfbf	217	printf("host USB device %d.%d grabbed\n", bus_num, addr);
bb36d470 FB	218	#endif
bb36d470 FB	219
bb36d470 FB	220	dev = qemu_mallocz(sizeof(USBHostDevice));
	221	if (!dev)
	222	goto fail;
	223	dev->fd = fd;
	224	if (ci.slow)
	225	dev->dev.speed = USB_SPEED_LOW;
	226	else
	227	dev->dev.speed = USB_SPEED_HIGH;
a594cfbf	228	dev->dev.handle_packet = usb_generic_handle_packet;
bb36d470 FB	229
	230	dev->dev.handle_reset = usb_host_handle_reset;
	231	dev->dev.handle_control = usb_host_handle_control;
	232	dev->dev.handle_data = usb_host_handle_data;
a594cfbf FB	233	return (USBDevice *)dev;
a594cfbf FB	234	}
bb36d470	235
a594cfbf FB	236	static int get_tag_value(char *buf, int buf_size,
	237	const char str, const char tag,
	238	const char *stopchars)
	239	{
	240	const char *p;
	241	char *q;
	242	p = strstr(str, tag);
	243	if (!p)
	244	return -1;
	245	p += strlen(tag);
	246	while (isspace(*p))
	247	p++;
	248	q = buf;
	249	while (p != '\0' && !strchr(stopchars, p)) {
	250	if ((q - buf) < (buf_size - 1))
	251	q++ = p;
	252	p++;
	253	}
	254	*q = '\0';
	255	return q - buf;
bb36d470 FB	256	}
bb36d470 FB	257
a594cfbf	258	static int usb_host_scan(void opaque, USBScanFunc func)
bb36d470	259	{
a594cfbf FB	260	FILE *f;
a594cfbf FB	261	char line[1024];
bb36d470	262	char buf[1024];
a594cfbf FB	263	int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
	264	int ret;
	265	char product_name[512];
	266
	267	f = fopen(USBDEVFS_PATH "/devices", "r");
	268	if (!f) {
	269	term_printf("Could not open %s\n", USBDEVFS_PATH "/devices");
	270	return 0;
	271	}
	272	device_count = 0;
	273	bus_num = addr = speed = class_id = product_id = vendor_id = 0;
	274	ret = 0;
bb36d470	275	for(;;) {
a594cfbf	276	if (fgets(line, sizeof(line), f) == NULL)
bb36d470	277	break;
a594cfbf FB	278	if (strlen(line) > 0)
	279	line[strlen(line) - 1] = '\0';
	280	if (line[0] == 'T' && line[1] == ':') {
38ca0f6d PB	281	if (device_count && (vendor_id \|\| product_id)) {
38ca0f6d PB	282	/* New device. Add the previously discovered device. */
a594cfbf FB	283	ret = func(opaque, bus_num, addr, class_id, vendor_id,
	284	product_id, product_name, speed);
	285	if (ret)
	286	goto the_end;
	287	}
	288	if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
	289	goto fail;
	290	bus_num = atoi(buf);
	291	if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
	292	goto fail;
	293	addr = atoi(buf);
	294	if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
	295	goto fail;
	296	if (!strcmp(buf, "480"))
	297	speed = USB_SPEED_HIGH;
	298	else if (!strcmp(buf, "1.5"))
	299	speed = USB_SPEED_LOW;
	300	else
	301	speed = USB_SPEED_FULL;
	302	product_name[0] = '\0';
	303	class_id = 0xff;
	304	device_count++;
	305	product_id = 0;
	306	vendor_id = 0;
	307	} else if (line[0] == 'P' && line[1] == ':') {
	308	if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
	309	goto fail;
	310	vendor_id = strtoul(buf, NULL, 16);
	311	if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
	312	goto fail;
	313	product_id = strtoul(buf, NULL, 16);
	314	} else if (line[0] == 'S' && line[1] == ':') {
	315	if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
	316	goto fail;
	317	pstrcpy(product_name, sizeof(product_name), buf);
	318	} else if (line[0] == 'D' && line[1] == ':') {
	319	if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
	320	goto fail;
	321	class_id = strtoul(buf, NULL, 16);
bb36d470	322	}
a594cfbf FB	323	fail: ;
a594cfbf FB	324	}
38ca0f6d PB	325	if (device_count && (vendor_id \|\| product_id)) {
38ca0f6d PB	326	/* Add the last device. */
a594cfbf FB	327	ret = func(opaque, bus_num, addr, class_id, vendor_id,
a594cfbf FB	328	product_id, product_name, speed);
bb36d470	329	}
a594cfbf FB	330	the_end:
	331	fclose(f);
	332	return ret;
bb36d470 FB	333	}
bb36d470 FB	334
a594cfbf FB	335	typedef struct FindDeviceState {
	336	int vendor_id;
	337	int product_id;
	338	int bus_num;
	339	int addr;
	340	} FindDeviceState;
	341
	342	static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
	343	int class_id,
	344	int vendor_id, int product_id,
	345	const char *product_name, int speed)
bb36d470	346	{
a594cfbf FB	347	FindDeviceState *s = opaque;
	348	if (vendor_id == s->vendor_id &&
	349	product_id == s->product_id) {
	350	s->bus_num = bus_num;
	351	s->addr = addr;
	352	return 1;
	353	} else {
	354	return 0;
	355	}
	356	}
bb36d470	357
a594cfbf FB	358	/* the syntax is :
	359	'bus.addr' (decimal numbers) or
	360	'vendor_id:product_id' (hexa numbers) */
	361	static int usb_host_find_device(int pbus_num, int paddr,
	362	const char *devname)
	363	{
	364	const char *p;
	365	int ret;
	366	FindDeviceState fs;
	367
	368	p = strchr(devname, '.');
	369	if (p) {
	370	*pbus_num = strtoul(devname, NULL, 0);
	371	*paddr = strtoul(p + 1, NULL, 0);
	372	return 0;
	373	}
	374	p = strchr(devname, ':');
	375	if (p) {
	376	fs.vendor_id = strtoul(devname, NULL, 16);
	377	fs.product_id = strtoul(p + 1, NULL, 16);
	378	ret = usb_host_scan(&fs, usb_host_find_device_scan);
	379	if (ret) {
	380	*pbus_num = fs.bus_num;
	381	*paddr = fs.addr;
	382	return 0;
bb36d470 FB	383	}
bb36d470 FB	384	}
a594cfbf	385	return -1;
bb36d470 FB	386	}
bb36d470 FB	387
a594cfbf FB	388	/**********************/
	389	/* USB host device info */
	390
	391	struct usb_class_info {
	392	int class;
	393	const char *class_name;
	394	};
	395
	396	static const struct usb_class_info usb_class_info[] = {
	397	{ USB_CLASS_AUDIO, "Audio"},
	398	{ USB_CLASS_COMM, "Communication"},
	399	{ USB_CLASS_HID, "HID"},
	400	{ USB_CLASS_HUB, "Hub" },
	401	{ USB_CLASS_PHYSICAL, "Physical" },
	402	{ USB_CLASS_PRINTER, "Printer" },
	403	{ USB_CLASS_MASS_STORAGE, "Storage" },
	404	{ USB_CLASS_CDC_DATA, "Data" },
	405	{ USB_CLASS_APP_SPEC, "Application Specific" },
	406	{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
	407	{ USB_CLASS_STILL_IMAGE, "Still Image" },
	408	{ USB_CLASS_CSCID, "Smart Card" },
	409	{ USB_CLASS_CONTENT_SEC, "Content Security" },
	410	{ -1, NULL }
	411	};
	412
	413	static const char *usb_class_str(uint8_t class)
bb36d470	414	{
a594cfbf FB	415	const struct usb_class_info *p;
	416	for(p = usb_class_info; p->class != -1; p++) {
	417	if (p->class == class)
	418	break;
bb36d470	419	}
a594cfbf FB	420	return p->class_name;
	421	}
	422
	423	void usb_info_device(int bus_num, int addr, int class_id,
	424	int vendor_id, int product_id,
	425	const char *product_name,
	426	int speed)
	427	{
	428	const char class_str, speed_str;
	429
	430	switch(speed) {
	431	case USB_SPEED_LOW:
	432	speed_str = "1.5";
	433	break;
	434	case USB_SPEED_FULL:
	435	speed_str = "12";
	436	break;
	437	case USB_SPEED_HIGH:
	438	speed_str = "480";
	439	break;
	440	default:
	441	speed_str = "?";
	442	break;
	443	}
	444
	445	term_printf(" Device %d.%d, speed %s Mb/s\n",
	446	bus_num, addr, speed_str);
	447	class_str = usb_class_str(class_id);
	448	if (class_str)
	449	term_printf(" %s:", class_str);
	450	else
	451	term_printf(" Class %02x:", class_id);
	452	term_printf(" USB device %04x:%04x", vendor_id, product_id);
	453	if (product_name[0] != '\0')
	454	term_printf(", %s", product_name);
	455	term_printf("\n");
	456	}
	457
	458	static int usb_host_info_device(void *opaque, int bus_num, int addr,
	459	int class_id,
	460	int vendor_id, int product_id,
	461	const char *product_name,
	462	int speed)
	463	{
	464	usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
	465	product_name, speed);
	466	return 0;
	467	}
	468
	469	void usb_host_info(void)
	470	{
	471	usb_host_scan(NULL, usb_host_info_device);
bb36d470 FB	472	}
	473
	474	#else
	475
a594cfbf FB	476	void usb_host_info(void)
	477	{
	478	term_printf("USB host devices not supported\n");
	479	}
	480
bb36d470	481	/* XXX: modify configure to compile the right host driver */
a594cfbf	482	USBDevice usb_host_device_open(const char devname)
bb36d470 FB	483	{
	484	return NULL;
	485	}
	486
	487	#endif