MIPS: Add support for uncached accelerated mappings.

[mv-sheeva.git] / arch / mips / include / asm / pgtable.h

diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index d6eb6134abeca4f819427937c9ad3dee380d1360..1854336e56a299d70e1b9b045edc93334f2829bf 100644 (file)
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -389,6 +389,19 @@ 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.