| 1 |
4c1c0deb
|
(no author)
|
#include <stdlib.h>
|
| 2 |
|
|
#include <stdio.h>
|
| 3 |
|
|
#include <unistd.h>
|
| 4 |
|
|
#include <errno.h>
|
| 5 |
|
|
#include <usb.h>
|
| 6 |
|
|
#include <sys/ioctl.h>
|
| 7 |
e73b417c
|
meri
|
#include "usb.h"
|
| 8 |
4c1c0deb
|
(no author)
|
#include <linux/usbdevice_fs.h>
|
| 9 |
|
|
|
| 10 |
|
|
#define MAX_READ_WRITE 4096
|
| 11 |
|
|
|
| 12 |
|
|
#define USB_ERROR_STR(ret, x, args...) return ret
|
| 13 |
|
|
|
| 14 |
|
|
static int usb_get_fd(usb_dev_handle *uh)
|
| 15 |
|
|
{
|
| 16 |
|
|
return *((int *)uh);
|
| 17 |
|
|
}
|
| 18 |
|
|
|
| 19 |
|
|
int __usb_bulk_write(usb_dev_handle *dev, int ep, char *bytes, int length,
|
| 20 |
|
|
int timeout)
|
| 21 |
|
|
{
|
| 22 |
|
|
struct usbdevfs_bulktransfer bulk;
|
| 23 |
|
|
int ret, sent = 0;
|
| 24 |
|
|
|
| 25 |
|
|
/* Ensure the endpoint address is correct */
|
| 26 |
|
|
ep &= ~USB_ENDPOINT_IN;
|
| 27 |
|
|
|
| 28 |
|
|
do {
|
| 29 |
|
|
bulk.ep = ep;
|
| 30 |
|
|
bulk.len = length - sent;
|
| 31 |
|
|
if (bulk.len > MAX_READ_WRITE)
|
| 32 |
|
|
bulk.len = MAX_READ_WRITE;
|
| 33 |
|
|
bulk.timeout = timeout;
|
| 34 |
|
|
bulk.data = (unsigned char *)bytes + sent;
|
| 35 |
|
|
|
| 36 |
|
|
ret = ioctl(usb_get_fd(dev), USBDEVFS_BULK, &bulk);
|
| 37 |
|
|
if (ret < 0)
|
| 38 |
|
|
USB_ERROR_STR(ret,
|
| 39 |
|
|
"error writing to bulk endpoint %d: %s",
|
| 40 |
|
|
ep, strerror(errno));
|
| 41 |
|
|
|
| 42 |
|
|
sent += ret;
|
| 43 |
|
|
} while (ret > 0 && sent < length);
|
| 44 |
|
|
|
| 45 |
|
|
return sent;
|
| 46 |
|
|
}
|
| 47 |
|
|
|
| 48 |
|
|
int __usb_bulk_read(usb_dev_handle *dev, int ep, char *bytes, int size,
|
| 49 |
|
|
int timeout)
|
| 50 |
|
|
{
|
| 51 |
|
|
struct usbdevfs_bulktransfer bulk;
|
| 52 |
|
|
int ret, retrieved = 0, requested;
|
| 53 |
|
|
|
| 54 |
|
|
/* Ensure the endpoint address is correct */
|
| 55 |
|
|
ep |= USB_ENDPOINT_IN;
|
| 56 |
|
|
|
| 57 |
|
|
do {
|
| 58 |
|
|
bulk.ep = ep;
|
| 59 |
|
|
requested = size - retrieved;
|
| 60 |
|
|
if (requested > MAX_READ_WRITE)
|
| 61 |
|
|
requested = MAX_READ_WRITE;
|
| 62 |
|
|
bulk.len = requested;
|
| 63 |
|
|
bulk.timeout = timeout;
|
| 64 |
|
|
bulk.data = (unsigned char *)bytes + retrieved;
|
| 65 |
|
|
|
| 66 |
|
|
ret = ioctl(usb_get_fd(dev), USBDEVFS_BULK, &bulk);
|
| 67 |
|
|
if (ret < 0)
|
| 68 |
|
|
USB_ERROR_STR(ret,
|
| 69 |
|
|
"error reading from bulk endpoint 0x%x: %s",
|
| 70 |
|
|
ep, strerror(errno));
|
| 71 |
|
|
|
| 72 |
|
|
retrieved += ret;
|
| 73 |
|
|
} while (ret > 0 && retrieved < size && ret == requested);
|
| 74 |
|
|
|
| 75 |
|
|
return retrieved;
|
| 76 |
|
|
}
|
| 77 |
|
|
|
| 78 |
|
|
int __usb_reattach_kernel_driver_np(usb_dev_handle *dev, int interface)
|
| 79 |
|
|
{
|
| 80 |
|
|
struct usbdevfs_ioctl command;
|
| 81 |
|
|
|
| 82 |
|
|
command.ifno = interface;
|
| 83 |
|
|
command.ioctl_code = USBDEVFS_CONNECT;
|
| 84 |
|
|
command.data = NULL;
|
| 85 |
|
|
|
| 86 |
|
|
return ioctl(usb_get_fd(dev), USBDEVFS_IOCTL, &command);
|
| 87 |
|
|
}
|
