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authorWu Zhangjin <wuzhangjin@gmail.com>2009-11-11 13:59:23 +0800
committerRalf Baechle <ralf@linux-mips.org>2009-12-17 01:57:15 +0000
commit22f1fdfd62a5f6ab738ffe03dc2ee9f1f25dabc4 (patch)
treedbfd9b7b9b1a25f31cfb0af42becdb33e7418b4d /arch/mips/include/asm/pgtable.h
parent55045ff5557bc804752e84dca5d1b1f1d4bb4e31 (diff)
downloadlinux-stericsson-22f1fdfd62a5f6ab738ffe03dc2ee9f1f25dabc4.tar.gz
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.h13
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.
*/