kernel-ark/include/asm-ia64/vga.h
Mark Maule 66b7f8a304 [IA64-SGI] pcdp: add PCDP pci interface support
Resend 2 with changes per Bjorn Helgaas comments.  Changes from original:

+ Change globals to vga_console_iobase/vga_console_membase and make them
  unconditional.
+ Address style-related comments.

Patch to extend the PCDP vga setup code to support PCI io/mem translations
for the legacy vga ioport and ram spaces on architectures (e.g. altix) which
need them.

Summary of the changes:

drivers/firmware/pcdp.c
drivers/firmware/pcdp.h
-----------------------
+ add declaration for the spec-defined PCI interface struct (pcdp_if_pci)
  as well as support macros.

+ extend setup_vga_console() to know about pcdp_if_pci and add a couple of
  globals to hold the io and mem translation offsets if present.

arch/ia64/kernel/setup.c
------------------------
+ tweek early_console_setup() to allow multiple early console setup routines
  to be called.

include/asm-ia64/vga.h
----------------------
+ make VGA_MAP_MEM vga_console_membase aware

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-28 09:09:06 -07:00

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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) ((unsigned long) ioremap(vga_console_membase + (x), 0))
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))
#endif /* __ASM_IA64_VGA_H_ */