1#ifndef _ASM_POWERPC_VGA_H_
2#define _ASM_POWERPC_VGA_H_
3
4#ifdef __KERNEL__
5
6/*
7 *	Access to VGA videoram
8 *
9 *	(c) 1998 Martin Mares <mj@ucw.cz>
10 */
11
12
13#include <asm/io.h>
14
15
16#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
17
18#define VT_BUF_HAVE_RW
19/*
20 *  These are only needed for supporting VGA or MDA text mode, which use little
21 *  endian byte ordering.
22 *  In other cases, we can optimize by using native byte ordering and
23 *  <linux/vt_buffer.h> has already done the right job for us.
24 */
25
26static inline void scr_writew(u16 val, volatile u16 *addr)
27{
28    st_le16(addr, val);
29}
30
31static inline u16 scr_readw(volatile const u16 *addr)
32{
33    return ld_le16(addr);
34}
35
36#define VT_BUF_HAVE_MEMCPYW
37#define scr_memcpyw	memcpy
38
39#endif /* !CONFIG_VGA_CONSOLE && !CONFIG_MDA_CONSOLE */
40
41extern unsigned long vgacon_remap_base;
42
43#ifdef __powerpc64__
44#define VGA_MAP_MEM(x,s) ((unsigned long) ioremap((x), s))
45#else
46#define VGA_MAP_MEM(x,s) (x + vgacon_remap_base)
47#endif
48
49#define vga_readb(x) (*(x))
50#define vga_writeb(x,y) (*(y) = (x))
51
52#endif	/* __KERNEL__ */
53#endif	/* _ASM_POWERPC_VGA_H_ */
54