mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 14:21:47 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/*
|
|
* Access to VGA videoram
|
|
*
|
|
* (c) 1998 Martin Mares <mj@ucw.cz>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _LINUX_ASM_VGA_H_
|
|
#define _LINUX_ASM_VGA_H_
|
|
|
|
#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;
|
|
#define VGA_MAP_MEM(x) ((unsigned long) ioremap((x), 0))
|
|
|
|
#define vga_readb(x) (*(x))
|
|
#define vga_writeb(x,y) (*(y) = (x))
|
|
|
|
#endif
|