1/*
2 *	Access to VGA videoram
3 *
4 *	(c) 1998 Martin Mares <mj@ucw.cz>
5 */
6
7#ifndef _LINUX_ASM_VGA_H_
8#define _LINUX_ASM_VGA_H_
9
10#include <asm/io.h>
11
12#define VT_BUF_HAVE_RW
13#define VT_BUF_HAVE_MEMSETW
14#define VT_BUF_HAVE_MEMCPYW
15
16extern inline void scr_writew(u16 val, volatile u16 *addr)
17{
18	if (__is_ioaddr((unsigned long) addr))
19		__raw_writew(val, (unsigned long) addr);
20	else
21		*addr = val;
22}
23
24extern inline u16 scr_readw(volatile const u16 *addr)
25{
26	if (__is_ioaddr((unsigned long) addr))
27		return __raw_readw((unsigned long) addr);
28	else
29		return *addr;
30}
31
32extern inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
33{
34	if (__is_ioaddr((unsigned long) s))
35		memsetw_io(s, c, count);
36	else
37		memsetw(s, c, count);
38}
39
40/* Do not trust that the usage will be correct; analyze the arguments.  */
41extern void scr_memcpyw(u16 *d, const u16 *s, unsigned int count);
42
43/* ??? These are currently only used for downloading character sets.  As
44   such, they don't need memory barriers.  Is this all they are intended
45   to be used for?  */
46#define vga_readb	readb
47#define vga_writeb	writeb
48
49#define VGA_MAP_MEM(x)	((unsigned long) ioremap((x), 0))
50
51#endif
52