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/*
* BK Id: SCCS/s.vga.h 1.5 05/17/01 18:14:26 cort
*/
/*
* Access to VGA videoram
*
* (c) 1998 Martin Mares <mj@ucw.cz>
*/
#ifdef __KERNEL__
#ifndef _LINUX_ASM_VGA_H_
#define _LINUX_ASM_VGA_H_
#include <asm/io.h>
#include <linux/config.h>
#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
#define VT_BUF_HAVE_RW
/*
* These are only needed for supporting VGA or MDA text mode, which use little
* endian byte ordering.
* In other cases, we can optimize by using native byte ordering and
* <linux/vt_buffer.h> has already done the right job for us.
*/
extern inline void scr_writew(u16 val, volatile u16 *addr)
{
st_le16(addr, val);
}
extern inline u16 scr_readw(volatile const u16 *addr)
{
return ld_le16(addr);
}
#define VT_BUF_HAVE_MEMCPYW
#define scr_memcpyw memcpy
#endif /* !CONFIG_VGA_CONSOLE && !CONFIG_MDA_CONSOLE */
extern unsigned long vgacon_remap_base;
#define VGA_MAP_MEM(x) (x + vgacon_remap_base)
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))
#endif
#endif /* __KERNEL__ */
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