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| author | Wu Zhangjin <wuzhangjin@gmail.com> | 2009-11-11 13:59:23 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-12-17 01:57:15 +0000 |
| commit | 22f1fdfd62a5f6ab738ffe03dc2ee9f1f25dabc4 (patch) | |
| tree | dbfd9b7b9b1a25f31cfb0af42becdb33e7418b4d /arch/mips/include/asm/pgtable.h | |
| parent | 55045ff5557bc804752e84dca5d1b1f1d4bb4e31 (diff) | |
| download | lwn-22f1fdfd62a5f6ab738ffe03dc2ee9f1f25dabc4.tar.gz lwn-22f1fdfd62a5f6ab738ffe03dc2ee9f1f25dabc4.zip | |
MIPS: Add support for uncached accelerated mappings.
Loongson2f support video acceleration.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/624/
Patchwork: http://patchwork.linux-mips.org/patch/625/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/pgtable.h')
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index d6eb6134abec..1854336e56a2 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -390,6 +390,19 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma, #include <asm-generic/pgtable.h> /* + * uncached accelerated TLB map for video memory access + */ +#ifdef CONFIG_CPU_SUPPORTS_UNCACHED_ACCELERATED +#define __HAVE_PHYS_MEM_ACCESS_PROT + +struct file; +pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, + unsigned long size, pgprot_t vma_prot); +int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn, + unsigned long size, pgprot_t *vma_prot); +#endif + +/* * We provide our own get_unmapped area to cope with the virtual aliasing * constraints placed on us by the cache architecture. */ |