vga.h

来自「ARM 嵌入式 系统 设计与实例开发 实验教材 二源码」· C头文件 代码 · 共 33 行

/*
 *	Access to VGA videoram
 *
 *	(c) 1998 Martin Mares <[e-mail]>
 */

#ifndef _LINUX_ASM_VGA_H_
#define _LINUX_ASM_VGA_H_

#include <asm/types.h>

#define VT_BUF_HAVE_RW

static inline void scr_writew(u16 val, u16 *addr)
{
	if ((long) addr < 0)
		*addr = val;
	else
		writew(val, (unsigned long) addr);
}

static inline u16 scr_readw(const u16 *addr)
{
	if ((long) addr < 0)
		return *addr;
	else
		return readw((unsigned long) addr);
}

#define VGA_MAP_MEM(x) (x)

#endif