]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
gpu/drm, x86, PAT: io_mapping_create_wc and resource_size_t
authorVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Wed, 25 Feb 2009 01:35:12 +0000 (17:35 -0800)
committerIngo Molnar <mingo@elte.hu>
Wed, 25 Feb 2009 12:09:51 +0000 (13:09 +0100)
commit4ab0d47d0ab311eb181532c1ecb6d02905685071
tree48b1a6cc01b65bab1442e05a971220366f998976
parent6644107d57a8fa82b47e4c55da4d9d91a612f29c
gpu/drm, x86, PAT: io_mapping_create_wc and resource_size_t

io_mapping_create_wc should take a resource_size_t parameter in place of
unsigned long. With unsigned long, there will be no way to map greater than 4GB
address in i386/32 bit.

On x86, greater than 4GB addresses cannot be mapped on i386 without PAE. Return
error for such a case.

Patch also adds a structure for io_mapping, that saves the base, size and
type on HAVE_ATOMIC_IOMAP archs, that can be used to verify the offset on
io_mapping_map calls.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Eric Anholt <eric@anholt.net>
Cc: Keith Packard <keithp@keithp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/include/asm/iomap.h
arch/x86/mm/iomap_32.c
include/linux/io-mapping.h