linux-hardened/include/asm-ia64/vga.h
Bjorn Helgaas 4f1bcaf094 [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use
VGA_MAP_MEM translates to ioremap() on some architectures.  It makes sense
to do this to vga_vram_base, because we're going to access memory between
vga_vram_base and vga_vram_end.

But it doesn't really make sense to map starting at vga_vram_end, because
we aren't going to access memory starting there.  On ia64, which always has
to be different, ioremapping vga_vram_end gives you something completely
incompatible with ioremapped vga_vram_start, so vga_vram_size ends up being
nonsense.

As a bonus, we often know the size up front, so we can use ioremap()
correctly, rather than giving it a zero size.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-22 15:05:58 -07:00

25 lines
618 B
C

/*
* Access to VGA videoram
*
* (c) 1998 Martin Mares <mj@ucw.cz>
* (c) 1999 Asit Mallick <asit.k.mallick@intel.com>
* (c) 1999 Don Dugger <don.dugger@intel.com>
*/
#ifndef __ASM_IA64_VGA_H_
#define __ASM_IA64_VGA_H_
/*
* On the PC, we can just recalculate addresses and then access the
* videoram directly without any black magic.
*/
extern unsigned long vga_console_iobase;
extern unsigned long vga_console_membase;
#define VGA_MAP_MEM(x,s) ((unsigned long) ioremap_nocache(vga_console_membase + (x), s))
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))
#endif /* __ASM_IA64_VGA_H_ */