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qemu/usb-linux.c

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/*
* 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 "qemu-common.h"
#include "hw/usb.h"
#include "console.h"
#if defined(__linux__)
#include <dirent.h>
#include <sys/ioctl.h>
#include <linux/usbdevice_fs.h>
#include <linux/version.h>
#include <signal.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 DEBUG_ISOCH
//#define USE_ASYNCIO
#define USBDEVFS_PATH "/proc/bus/usb"
#define PRODUCT_NAME_SZ 32
#define SIG_ISOCOMPLETE (SIGRTMIN+7)
#define MAX_ENDPOINTS 16
struct sigaction sigact;
/* endpoint association data */
struct endp_data {
uint8_t type;
};
/* FIXME: move USBPacket to PendingURB */
typedef struct USBHostDevice {
USBDevice dev;
int fd;
int pipe_fds[2];
USBPacket *packet;
struct endp_data endp_table[MAX_ENDPOINTS];
int configuration;
uint8_t descr[1024];
int descr_len;
int urbs_ready;
} USBHostDevice;
typedef struct PendingURB {
struct usbdevfs_urb *urb;
int status;
struct PendingURB *next;
} PendingURB;
static PendingURB *pending_urbs = NULL;
static int add_pending_urb(struct usbdevfs_urb *urb)
{
PendingURB *purb = qemu_mallocz(sizeof(PendingURB));
if (purb) {
purb->urb = urb;
purb->status = 0;
purb->next = pending_urbs;
pending_urbs = purb;
return 1;
}
return 0;
}
static int del_pending_urb(struct usbdevfs_urb *urb)
{
PendingURB *purb = pending_urbs;
PendingURB *prev = NULL;
while (purb && purb->urb != urb) {
prev = purb;
purb = purb->next;
}
if (purb && purb->urb == urb) {
if (prev) {
prev->next = purb->next;
} else {
pending_urbs = purb->next;
}
qemu_free(purb);
return 1;
}
return 0;
}
#ifdef USE_ASYNCIO
static PendingURB *get_pending_urb(struct usbdevfs_urb *urb)
{
PendingURB *purb = pending_urbs;
while (purb && purb->urb != urb) {
purb = purb->next;
}
if (purb && purb->urb == urb) {
return purb;
}
return NULL;
}
#endif
static int usb_host_update_interfaces(USBHostDevice *dev, int configuration)
{
int dev_descr_len, config_descr_len;
int interface, nb_interfaces, nb_configurations;
int ret, i;
if (configuration == 0) /* address state - ignore */
return 1;
i = 0;
dev_descr_len = dev->descr[0];
if (dev_descr_len > dev->descr_len)
goto fail;
nb_configurations = dev->descr[17];
i += dev_descr_len;
while (i < dev->descr_len) {
#ifdef DEBUG
printf("i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
dev->descr[i], dev->descr[i+1]);
#endif
if (dev->descr[i+1] != USB_DT_CONFIG) {
i += dev->descr[i];
continue;
}
config_descr_len = dev->descr[i];
if (configuration == dev->descr[i + 5])
break;
i += config_descr_len;
}
if (i >= dev->descr_len) {
printf("usb_host: error - device has no matching configuration\n");
goto fail;
}
nb_interfaces = dev->descr[i + 4];
#ifdef USBDEVFS_DISCONNECT
/* earlier Linux 2.4 do not support that */
{
struct usbdevfs_ioctl ctrl;
for (interface = 0; interface < nb_interfaces; interface++) {
ctrl.ioctl_code = USBDEVFS_DISCONNECT;
ctrl.ifno = interface;
ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
if (ret < 0 && errno != ENODATA) {
perror("USBDEVFS_DISCONNECT");
goto fail;
}
}
}
#endif
/* XXX: only grab if all interfaces are free */
for (interface = 0; interface < nb_interfaces; interface++) {
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
if (ret < 0) {
if (errno == EBUSY) {
fprintf(stderr,
"usb_host: warning - device already grabbed\n");
} else {
perror("USBDEVFS_CLAIMINTERFACE");
}
fail:
return 0;
}
}
#ifdef DEBUG
printf("usb_host: %d interfaces claimed for configuration %d\n",
nb_interfaces, configuration);
#endif
return 1;
}
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_linux_update_endp_table(USBHostDevice *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;
struct usbdevfs_setinterface si;
int intf_update_required = 0;
int ret;
if (request == (DeviceOutRequest | USB_REQ_SET_ADDRESS)) {
/* specific SET_ADDRESS support */
dev->addr = value;
return 0;
} else if (request == ((USB_RECIP_INTERFACE << 8) |
USB_REQ_SET_INTERFACE)) {
/* set alternate setting for the interface */
si.interface = index;
si.altsetting = value;
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
usb_linux_update_endp_table(s);
} else if (request == (DeviceOutRequest | USB_REQ_SET_CONFIGURATION)) {
#ifdef DEBUG
printf("usb_host_handle_control: SET_CONFIGURATION request - "
"config %d\n", value & 0xff);
#endif
if (s->configuration != (value & 0xff)) {
s->configuration = (value & 0xff);
intf_update_required = 1;
}
goto do_request;
} else {
do_request:
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 {
if (intf_update_required) {
#ifdef DEBUG
printf("usb_host_handle_control: updating interfaces\n");
#endif
usb_host_update_interfaces(s, value & 0xff);
}
return ret;
}
}
static int usb_host_handle_isoch(USBDevice *dev, USBPacket *p);
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;
if (s->endp_table[p->devep - 1].type == USBDEVFS_URB_TYPE_ISO) {
return usb_host_handle_isoch(dev, p);
}
/* 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;
}
}
#ifdef USE_ASYNCIO
static void urb_completion_pipe_read(void *opaque)
{
USBHostDevice *s = opaque;
USBPacket *p = s->packet;
PendingURB *pending_urb = NULL;
struct usbdevfs_urb *purb = NULL;
int len, ret;
len = read(s->pipe_fds[0], &pending_urb, sizeof(pending_urb));
if (len != sizeof(pending_urb)) {
printf("urb_completion: error reading pending_urb, len=%d\n", len);
return;
}
/* FIXME: handle pending_urb->status */
del_pending_urb(pending_urb->urb);
if (!p) {
s->urbs_ready++;
return;
}
ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb);
if (ret < 0) {
printf("urb_completion: REAPURBNDELAY ioctl=%d errno=%d\n",
ret, errno);
return;
}
#ifdef DEBUG_ISOCH
if (purb == pending_urb->urb) {
printf("urb_completion: urb mismatch reaped=%p pending=%p\n",
purb, urb);
}
#endif
p->len = purb->actual_length;
usb_packet_complete(p);
qemu_free(purb);
s->packet = NULL;
}
static void isoch_done(int signum, siginfo_t *info, void *context)
{
struct usbdevfs_urb *urb = (struct usbdevfs_urb *)info->si_addr;
USBHostDevice *s = (USBHostDevice *)urb->usercontext;
PendingURB *purb;
if (info->si_code != SI_ASYNCIO ||
info->si_signo != SIG_ISOCOMPLETE) {
return;
}
purb = get_pending_urb(urb);
if (purb) {
purb->status = info->si_errno;
write(s->pipe_fds[1], &purb, sizeof(purb));
}
}
#endif
static int usb_host_handle_isoch(USBDevice *dev, USBPacket *p)
{
USBHostDevice *s = (USBHostDevice *)dev;
struct usbdevfs_urb *urb, *purb = NULL;
int ret;
uint8_t devep = p->devep;
if (p->pid == USB_TOKEN_IN)
devep |= 0x80;
urb = qemu_mallocz(sizeof(struct usbdevfs_urb) +
sizeof(struct usbdevfs_iso_packet_desc));
if (!urb) {
printf("usb_host_handle_isoch: malloc failed\n");
return 0;
}
urb->type = USBDEVFS_URB_TYPE_ISO;
urb->endpoint = devep;
urb->status = 0;
urb->flags = USBDEVFS_URB_ISO_ASAP;
urb->buffer = p->data;
urb->buffer_length = p->len;
urb->actual_length = 0;
urb->start_frame = 0;
urb->error_count = 0;
#ifdef USE_ASYNCIO
urb->signr = SIG_ISOCOMPLETE;
#else
urb->signr = 0;
#endif
urb->usercontext = s;
urb->number_of_packets = 1;
urb->iso_frame_desc[0].length = p->len;
urb->iso_frame_desc[0].actual_length = 0;
urb->iso_frame_desc[0].status = 0;
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
if (ret == 0) {
if (!add_pending_urb(urb)) {
printf("usb_host_handle_isoch: add_pending_urb failed %p\n", urb);
}
} else {
printf("usb_host_handle_isoch: SUBMITURB ioctl=%d errno=%d\n",
ret, errno);
qemu_free(urb);
switch(errno) {
case ETIMEDOUT:
return USB_RET_NAK;
case EPIPE:
default:
return USB_RET_STALL;
}
}
#ifdef USE_ASYNCIO
/* FIXME: handle urbs_ready together with sync io
* workaround for injecting the signaled urbs into current frame */
if (s->urbs_ready > 0) {
ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb);
if (ret == 0) {
ret = purb->actual_length;
qemu_free(purb);
s->urbs_ready--;
}
return ret;
}
s->packet = p;
return USB_RET_ASYNC;
#else
ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb);
if (ret == 0) {
if (del_pending_urb(purb)) {
ret = purb->actual_length;
qemu_free(purb);
} else {
printf("usb_host_handle_isoch: del_pending_urb failed %p\n", purb);
}
} else {
#ifdef DEBUG_ISOCH
printf("usb_host_handle_isoch: REAPURBNDELAY ioctl=%d errno=%d\n",
ret, errno);
#endif
}
return ret;
#endif
}
/* returns 1 on problem encountered or 0 for success */
static int usb_linux_update_endp_table(USBHostDevice *s)
{
uint8_t *descriptors;
uint8_t devep, type, configuration, alt_interface;
struct usb_ctrltransfer ct;
int interface, ret, length, i;
ct.bRequestType = USB_DIR_IN;
ct.bRequest = USB_REQ_GET_CONFIGURATION;
ct.wValue = 0;
ct.wIndex = 0;
ct.wLength = 1;
ct.data = &configuration;
ct.timeout = 50;
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
if (ret < 0) {
perror("usb_linux_update_endp_table");
return 1;
}
/* in address state */
if (configuration == 0)
return 1;
/* get the desired configuration, interface, and endpoint descriptors
* from device description */
descriptors = &s->descr[18];
length = s->descr_len - 18;
i = 0;
if (descriptors[i + 1] != USB_DT_CONFIG ||
descriptors[i + 5] != configuration) {
printf("invalid descriptor data - configuration\n");
return 1;
}
i += descriptors[i];
while (i < length) {
if (descriptors[i + 1] != USB_DT_INTERFACE ||
(descriptors[i + 1] == USB_DT_INTERFACE &&
descriptors[i + 4] == 0)) {
i += descriptors[i];
continue;
}
interface = descriptors[i + 2];
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
ct.bRequest = USB_REQ_GET_INTERFACE;
ct.wValue = 0;
ct.wIndex = interface;
ct.wLength = 1;
ct.data = &alt_interface;
ct.timeout = 50;
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
if (ret < 0) {
perror("usb_linux_update_endp_table");
return 1;
}
/* the current interface descriptor is the active interface
* and has endpoints */
if (descriptors[i + 3] != alt_interface) {
i += descriptors[i];
continue;
}
/* advance to the endpoints */
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT)
i += descriptors[i];
if (i >= length)
break;
while (i < length) {
if (descriptors[i + 1] != USB_DT_ENDPOINT)
break;
devep = descriptors[i + 2];
switch (descriptors[i + 3] & 0x3) {
case 0x00:
type = USBDEVFS_URB_TYPE_CONTROL;
break;
case 0x01:
type = USBDEVFS_URB_TYPE_ISO;
break;
case 0x02:
type = USBDEVFS_URB_TYPE_BULK;
break;
case 0x03:
type = USBDEVFS_URB_TYPE_INTERRUPT;
break;
default:
printf("usb_host: malformed endpoint type\n");
type = USBDEVFS_URB_TYPE_BULK;
}
s->endp_table[(devep & 0xf) - 1].type = type;
i += descriptors[i];
}
}
return 0;
}
/* XXX: exclude high speed devices or implement EHCI */
USBDevice *usb_host_device_open(const char *devname)
{
int fd = -1, ret;
USBHostDevice *dev = NULL;
struct usbdevfs_connectinfo ci;
char buf[1024];
int bus_num, addr;
char product_name[PRODUCT_NAME_SZ];
dev = qemu_mallocz(sizeof(USBHostDevice));
if (!dev)
goto fail;
#ifdef DEBUG_ISOCH
printf("usb_host_device_open %s\n", devname);
#endif
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 | O_NONBLOCK);
if (fd < 0) {
perror(buf);
return NULL;
}
/* read the device description */
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
if (dev->descr_len <= 0) {
perror("usb_host_device_open: reading device data failed");
goto fail;
}
#ifdef DEBUG
{
int x;
printf("=== begin dumping device descriptor data ===\n");
for (x = 0; x < dev->descr_len; x++)
printf("%02x ", dev->descr[x]);
printf("\n=== end dumping device descriptor data ===\n");
}
#endif
dev->fd = fd;
dev->configuration = 1;
/* XXX - do something about initial configuration */
if (!usb_host_update_interfaces(dev, 1))
goto fail;
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
if (ret < 0) {
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
goto fail;
}
#ifdef DEBUG
printf("host USB device %d.%d grabbed\n", bus_num, addr);
#endif
ret = usb_linux_update_endp_table(dev);
if (ret)
goto fail;
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);
#ifdef USE_ASYNCIO
/* set up the signal handlers */
sigemptyset(&sigact.sa_mask);
sigact.sa_sigaction = isoch_done;
sigact.sa_flags = SA_SIGINFO;
sigact.sa_restorer = 0;
ret = sigaction(SIG_ISOCOMPLETE, &sigact, NULL);
if (ret < 0) {
perror("usb_host_device_open: sigaction failed");
goto fail;
}
if (pipe(dev->pipe_fds) < 0) {
perror("usb_host_device_open: pipe creation failed");
goto fail;
}
fcntl(dev->pipe_fds[0], F_SETFL, O_NONBLOCK | O_ASYNC);
fcntl(dev->pipe_fds[1], F_SETFL, O_NONBLOCK);
qemu_set_fd_handler(dev->pipe_fds[0], urb_completion_pipe_read, NULL, dev);
#endif
dev->urbs_ready = 0;
return (USBDevice *)dev;
fail:
if (dev)
qemu_free(dev);
close(fd);
return NULL;
}
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;
}
static 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
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