diff options
| author | Alistair Popple <alistair@popple.id.au> | 2013-12-09 11:17:01 +0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-12-30 07:17:06 +0400 |
| commit | e589a4404fa06730355de204d3d136ed9bbc7dea (patch) | |
| tree | a7b4d1dad98a06d89e652194947735db7eec02b5 /arch/powerpc/include/asm/iommu.h | |
| parent | fee26f6d5d68a8815b20c32d15dd70d5384eb937 (diff) | |
| download | linux-e589a4404fa06730355de204d3d136ed9bbc7dea.tar.xz | |
powerpc/iommu: Update constant names to reflect their hardcoded page size
The powerpc iommu uses a hardcoded page size of 4K. This patch changes
the name of the IOMMU_PAGE_* macros to reflect the hardcoded values. A
future patch will use the existing names to support dynamic page
sizes.
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/iommu.h')
| -rw-r--r-- | arch/powerpc/include/asm/iommu.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h index 774fa2776907..0869c7e74421 100644 --- a/arch/powerpc/include/asm/iommu.h +++ b/arch/powerpc/include/asm/iommu.h @@ -30,10 +30,10 @@ #include <asm/machdep.h> #include <asm/types.h> -#define IOMMU_PAGE_SHIFT 12 -#define IOMMU_PAGE_SIZE (ASM_CONST(1) << IOMMU_PAGE_SHIFT) -#define IOMMU_PAGE_MASK (~((1 << IOMMU_PAGE_SHIFT) - 1)) -#define IOMMU_PAGE_ALIGN(addr) _ALIGN_UP(addr, IOMMU_PAGE_SIZE) +#define IOMMU_PAGE_SHIFT_4K 12 +#define IOMMU_PAGE_SIZE_4K (ASM_CONST(1) << IOMMU_PAGE_SHIFT_4K) +#define IOMMU_PAGE_MASK_4K (~((1 << IOMMU_PAGE_SHIFT_4K) - 1)) +#define IOMMU_PAGE_ALIGN_4K(addr) _ALIGN_UP(addr, IOMMU_PAGE_SIZE_4K) /* Boot time flags */ extern int iommu_is_off; @@ -42,7 +42,7 @@ extern int iommu_force_on; /* Pure 2^n version of get_order */ static __inline__ __attribute_const__ int get_iommu_order(unsigned long size) { - return __ilog2((size - 1) >> IOMMU_PAGE_SHIFT) + 1; + return __ilog2((size - 1) >> IOMMU_PAGE_SHIFT_4K) + 1; } |