Revision 060e352236ece3325a684c72817fbacdac597574 authored by Jeff Dike on 20 May 2005, 20:59:08 UTC, committed by Linus Torvalds on 20 May 2005, 22:48:17 UTC
This patch cleans up the delay implementations a bit, makes the loops unoptimizable, and exports __udelay and __const_udelay. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 13479d5
vga.h
/*
* Access to VGA videoram
*
* (c) 1998 Martin Mares <mj@ucw.cz>
*/
#ifndef _LINUX_ASM_VGA_H_
#define _LINUX_ASM_VGA_H_
#include <asm/io.h>
#define VT_BUF_HAVE_RW
#define VT_BUF_HAVE_MEMSETW
#define VT_BUF_HAVE_MEMCPYW
extern inline void scr_writew(u16 val, volatile u16 *addr)
{
if (__is_ioaddr(addr))
__raw_writew(val, (volatile u16 __iomem *) addr);
else
*addr = val;
}
extern inline u16 scr_readw(volatile const u16 *addr)
{
if (__is_ioaddr(addr))
return __raw_readw((volatile const u16 __iomem *) addr);
else
return *addr;
}
extern inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
{
if (__is_ioaddr(s))
memsetw_io((u16 __iomem *) s, c, count);
else
memsetw(s, c, count);
}
/* Do not trust that the usage will be correct; analyze the arguments. */
extern void scr_memcpyw(u16 *d, const u16 *s, unsigned int count);
/* ??? These are currently only used for downloading character sets. As
such, they don't need memory barriers. Is this all they are intended
to be used for? */
#define vga_readb(a) readb((u8 __iomem *)(a))
#define vga_writeb(v,a) writeb(v, (u8 __iomem *)(a))
#define VGA_MAP_MEM(x) ((unsigned long) ioremap(x, 0))
#endif
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