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/*
* Access to VGA videoram
*
* (c) 1998 Martin Mares <mj@ucw.cz>
*/
#ifndef _LINUX_ASM_VGA_H_
#define _LINUX_ASM_VGA_H_
#include <asm/io.h>
#include <asm/processor.h>
#include <linux/config.h>
#include <linux/console.h>
#define VT_BUF_HAVE_RW
extern inline void scr_writew(u16 val, u16 *addr)
{
/* If using vgacon (not fbcon) byteswap the writes.
* If non-vgacon assume fbcon and don't byteswap
* just like include/linux/vt_buffer.h.
* XXX: this is a performance loss so get rid of it
* as soon as fbcon works on prep.
* -- Cort
*/
#ifdef CONFIG_FB
if ( conswitchp != &vga_con )
(*(addr) = (val));
else
#endif /* CONFIG_FB */
st_le16(addr, val);
}
extern inline u16 scr_readw(const u16 *addr)
{
#ifdef CONFIG_FB
if ( conswitchp != &vga_con )
return (*(addr));
else
#endif /* CONFIG_FB */
return ld_le16((unsigned short *)addr);
}
#define VT_BUF_HAVE_MEMCPYF
#define scr_memcpyw_from memcpy
#define scr_memcpyw_to memcpy
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
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