dactron.h

Linux环境下usb数据采集设备的驱动程序

#define MODULE
#define __KERNEL__

#include <linux/fs.h>
#include <linux/usb.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/ioctl.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/devfs_fs_kernel.h>
#include <asm/uaccess.h>

#define	DACT_MAX_MNR	16
#define	DACT_BASE_MNR	144

#define IS_EP_BULK(ep)  ((ep).bmAttributes == USB_ENDPOINT_XFER_BULK ? 1 : 0)
#define IS_EP_BULK_IN(ep) (IS_EP_BULK(ep) && ((ep).bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
#define IS_EP_BULK_OUT(ep) (IS_EP_BULK(ep) && ((ep).bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
#define IS_EP_INTR(ep) ((ep).bmAttributes == USB_ENDPOINT_XFER_INT ? 1 : 0)

#define USB_DACT_MINOR(X) MINOR((X)->i_rdev) - DACT_BASE_MNR

#define IBUF_SIZE 32768
#define OBUF_SIZE 4096

#define RD_NAK_TIMEOUT (10*HZ)	/* Default number of X seconds to wait */
#define RD_EXPIRE 12		/* Number of attempts to wait X seconds */

extern	devfs_handle_t	usb_devfs_handle_dactron;

static DECLARE_MUTEX (dactron_mutex); /* Initializes to unlocked */

struct	usb_device;

struct	usb_dactron_data{
	struct	usb_device	*dact_dev;
	devfs_handle_t		devfs;
	unsigned int		ifnum;
	kdev_t			dact_minor;
	unsigned char		button;
	char			isopen;
	char			present;
	char			*obuf, *ibuf;
	char			bulk_in_ep[3];
	char			bulk_out_ep[3];
	wait_queue_head_t	rd_wait_q;
	struct	semaphore	sem;
	unsigned int		rd_nak_timeout;
};

static	struct usb_dactron_data *p_table[ DACT_MAX_MNR ] = { NULL, /* ... */ };

static  struct usb_device_id dactron_device_ids[] = {
	{ USB_DEVICE( 0x547, 0x2131 )},
	{ USB_DEVICE( 0x547, 0x9999 )},
	{ },
};

#define CPUCS_REG    0x7F92
#define MAX_INTEL_HEX_RECORD_LENGTH 16

/* read vendor and product IDs from the dactron */
#define DACTRON_IOCTL_VENDOR _IOR('U', 0x20, int)
#define DACTRON_IOCTL_PRODUCT _IOR('U', 0x21, int)
/* send/recv a control message to the dactron */
#define DACTRON_IOCTL_CTRLMSG _IOWR('U', 0x22, devrequest )

typedef struct _INTEL_HEX_RECORD
{
   unsigned char  Length;
   unsigned short  Address;
   unsigned char  Type;
   unsigned char  Data[MAX_INTEL_HEX_RECORD_LENGTH];
} INTEL_HEX_RECORD, *PINTEL_HEX_RECORD;