summaryrefslogtreecommitdiffstats
path: root/include/asm-powerpc/vga.h
blob: f8d350aabf1a019f49ca194ff19f9f6b211d853c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
#ifndef _ASM_POWERPC_VGA_H_
#define _ASM_POWERPC_VGA_H_

#ifdef __KERNEL__

/*
 *	Access to VGA videoram
 *
 *	(c) 1998 Martin Mares <mj@ucw.cz>
 */


#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.
 */

static inline void scr_writew(u16 val, volatile u16 *addr)
{
    st_le16(addr, val);
}

static 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;

#ifdef __powerpc64__
#define VGA_MAP_MEM(x) ((unsigned long) ioremap((x), 0))
#else
#define VGA_MAP_MEM(x) (x + vgacon_remap_base)
#endif

#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))

#endif	/* __KERNEL__ */
#endif	/* _ASM_POWERPC_VGA_H_ */
OpenPOWER on IntegriCloud