tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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#include <linux/config.h>
16
17#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
18
19#define VT_BUF_HAVE_RW
20/*
21 * These are only needed for supporting VGA or MDA text mode, which use little
22 * endian byte ordering.
23 * In other cases, we can optimize by using native byte ordering and
24 * <linux/vt_buffer.h> has already done the right job for us.
25 */
26
27static inline void scr_writew(u16 val, volatile u16 *addr)
28{
29 st_le16(addr, val);
30}
31
32static inline u16 scr_readw(volatile const u16 *addr)
33{
34 return ld_le16(addr);
35}
36
37#define VT_BUF_HAVE_MEMCPYW
38#define scr_memcpyw memcpy
39
40#endif /* !CONFIG_VGA_CONSOLE && !CONFIG_MDA_CONSOLE */
41
42extern unsigned long vgacon_remap_base;
43
44#ifdef __powerpc64__
45#define VGA_MAP_MEM(x) ((unsigned long) ioremap((x), 0))
46#else
47#define VGA_MAP_MEM(x) (x + vgacon_remap_base)
48#endif
49
50#define vga_readb(x) (*(x))
51#define vga_writeb(x,y) (*(y) = (x))
52
53#endif /* __KERNEL__ */
54#endif /* _ASM_POWERPC_VGA_H_ */