4f1bcaf094
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>
12 lines
261 B
C
12 lines
261 B
C
#ifndef ASMARM_VGA_H
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#define ASMARM_VGA_H
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#include <asm/hardware.h>
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#include <asm/io.h>
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#define VGA_MAP_MEM(x,s) (PCIMEM_BASE + (x))
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#define vga_readb(x) (*((volatile unsigned char *)x))
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#define vga_writeb(x,y) (*((volatile unsigned char *)y) = (x))
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#endif
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