diff options
| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2009-07-10 18:57:35 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-08-27 00:41:16 +0200 |
| commit | 9e36fda0b359d2a6ae039c3d7e71a04502a77898 (patch) | |
| tree | a1a50780b15cf59de22ee4ee87fee6e488a310d3 /arch/x86/include/asm/iomap.h | |
| parent | x86, pat: New i/f for driver to request memtype for IO regions (diff) | |
| download | linux-9e36fda0b359d2a6ae039c3d7e71a04502a77898.tar.xz linux-9e36fda0b359d2a6ae039c3d7e71a04502a77898.zip | |
x86, pat: Add PAT reserve free to io_mapping* APIs
io_mapping_* interfaces were added, mainly for graphics drivers.
Make this interface go through the PAT reserve/free, instead of
hardcoding WC mapping. This makes sure that there are no
aliases due to unconditional WC setting.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/iomap.h')
| -rw-r--r-- | arch/x86/include/asm/iomap.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/x86/include/asm/iomap.h b/arch/x86/include/asm/iomap.h index 0e9fe1d9d971..f35eb45d6576 100644 --- a/arch/x86/include/asm/iomap.h +++ b/arch/x86/include/asm/iomap.h @@ -26,13 +26,16 @@ #include <asm/pgtable.h> #include <asm/tlbflush.h> -int -is_io_mapping_possible(resource_size_t base, unsigned long size); - void * iomap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot); void iounmap_atomic(void *kvaddr, enum km_type type); +int +iomap_create_wc(resource_size_t base, unsigned long size, pgprot_t *prot); + +void +iomap_free(resource_size_t base, unsigned long size); + #endif /* _ASM_X86_IOMAP_H */ |