vme.h

VME总线的驱动程序

/*
 * linux/drivers/char/vme.h
 *
 * Copyright (C) 2006 - 2007 yang xu
 *
 * VME Bus Control Driver 0.1
 */

#ifndef _VME_H
#define _VME_H

#define MAJOR_NUM  232
#define IOCTL_WRITE 	_IOWR(MAJOR_NUM,0,unsigned int )
#define IOCTL_READ  	_IOWR(MAJOR_NUM,1,unsigned int )
//--------------------------------------------------------------------
#define VME_PHYSICAL_REG_ADDR       0x80100000
#define VME_PHYSICAL_REG_SIZE       0x1000
unsigned int *vme_RegAddr,*vme_RegAddr_temp;
static unsigned int vme_off;
static int addr_tmp;

// the following are control register address
#define VME_BASE1				0x80100000
#define VME_CSR_OFF				0x00000000
#define VME_CSRL_OFF			0x00000000
#define VME_CSRH_OFF			0x00000002
#define VME_ADDR_OFF			0x00000004
#define VME_ADDRL_OFF			0x00000004
#define VME_ADDRH_OFF			0x00000006
#define VME_DATA_OFF			0x00000008

#define VME_READ_CTRL			0x3e290000
#define VME_WRITE_CTRL			0x3e190000
#define IRQ_NUMBER				30
//define command
#define CTRL_CMD				1
#define ADDR_CMD				2
#define DATA_CMD				4


/*
 * Macros to help debugging
 */

#undef VME_DEBUG
#ifdef VME_DEBUG
#  ifdef __KERNEL__
     /* This one if debugging is on, and kernel space */
#    define PDEBUG(fmt, args...) printk( KERN_DEBUG "scull: " fmt, ## args)
#  else
     /* This one for user space */
#    define PDEBUG(fmt, args...) fprintf(stderr, fmt, ## args)
#  endif
#else
#  define PDEBUG(fmt, args...) /* not debugging: nothing */
#endif


#endif