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linux-sg2042
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Fix endianess bugs. 

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2005-07-11 10:37:51 +00:00
parent 3ef33e68c1
commit c0ec406c80
1 changed files with 25 additions and 0 deletions
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25
include/asm-mips/vga.h
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@ -6,6 +6,8 @@
#ifndef _ASM_VGA_H
#define _ASM_VGA_H
#include <asm/byteorder.h>
/*
* On the PC, we can just recalculate addresses and then
* access the videoram directly without any black magic.
@ -16,4 +18,27 @@
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))
#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)
{
*addr = cpu_to_le16(val);
}
static inline u16 scr_readw(volatile const u16 *addr)
{
return le16_to_cpu(*addr);
}
#define scr_memcpyw(d, s, c) memcpy(d, s, c)
#define scr_memmovew(d, s, c) memmove(d, s, c)
#define VT_BUF_HAVE_MEMCPYW
#define VT_BUF_HAVE_MEMMOVEW
#endif /* _ASM_VGA_H */