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/************************************************************************\
## ##
## Creation Date: 19 Mar 2007 ##
## Last Update: 19 Mar 2007 ##
## Author: XInstruments ##
## ##
## Desc: Driver main module header. ##
## ##
\************************************************************************/
#include <linux/usb.h>
#define USMC_DEV_NAME "8SMC-USB1h"
#define USMC_PRODUCT_ID 0x0230
#define USMC_VENDOR_ID 0x10c4
#define USB_USMC_MINOR_BASE 192 // Get a minor range for your devices from the usb maintainer
#define WRITES_IN_FLIGHT 8
#define USMC_SUCCESS 0
// Connect/Disconnect:
static int usmc_probe ( struct usb_interface * interface,
const struct usb_device_id * id );
static void usmc_disconnect ( struct usb_interface * interface );
// File operations:
static long usmc_ioctl ( struct file * file, unsigned int ioctl_num, unsigned long ioctl_param );
static int usmc_open ( struct inode * inode, struct file * file );
static int usmc_release ( struct inode * inode, struct file * file );
// Util functions:
static void usmc_delete ( struct kref * kref );
static struct usb_device_id usmc_table [] = {
{ USB_DEVICE ( USMC_VENDOR_ID, USMC_PRODUCT_ID ) },
{} // Terminating element.
};
static struct usb_driver usmc_driver = {
.name = USMC_DEV_NAME,
.probe = usmc_probe,
.disconnect = usmc_disconnect,
.id_table = usmc_table
};
/* Structure to hold all of our device specific stuff */
struct usb_usmc
{
struct usb_device * udev; /* the usb device for this device */
struct usb_interface * interface; /* the interface for this device */
struct semaphore limit_sem; /* limiting the number of writes in progress */
// unsigned char * bulk_in_buffer; /* the buffer to receive data */
// size_t bulk_in_size; /* the size of the receive buffer */
// __u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */
// __u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */
struct kref kref;
};
#define to_usmc_dev(d) container_of(d, struct usb_usmc, kref)
static struct file_operations usmc_fops = {
.owner = THIS_MODULE,
/* .read = usmc_read,
.write = usmc_write,*/
.open = usmc_open,
.release = usmc_release,
.unlocked_ioctl = usmc_ioctl
};
/*
struct file_operations {
struct module *owner;
loff_t (*llseek) (struct file *, loff_t, int);
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
int (*readdir) (struct file *, void *, filldir_t);
unsigned int (*poll) (struct file *, struct poll_table_struct *);
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
.....
*/
/*
* usb class driver info in order to get a minor number from the usb core,
* and to have the device registered with the driver core
*/
static struct usb_class_driver usmc_class = {
.name = "usmc%d",
.fops = &usmc_fops,
.minor_base = USB_USMC_MINOR_BASE
};