microblaze: Remove "cache" optimized copy_page function

[firefly-linux-kernel-4.4.55.git] / arch / microblaze / include / asm / page.h

diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
index 9b66c0fa9a32caf5ba14e7f0c9478119808a0759..7b9ba8f145ea133546f87ecacec14ac3f0e912a2 100644 (file)
--- a/arch/microblaze/include/asm/page.h
+++ b/arch/microblaze/include/asm/page.h
@@ -61,12 +61,6 @@ extern unsigned int __page_offset;
  */
 #define PAGE_OFFSET    CONFIG_KERNEL_START
 
-/*
- * MAP_NR -- given an address, calculate the index of the page struct which
- * points to the address's page.
- */
-#define MAP_NR(addr) (((unsigned long)(addr) - PAGE_OFFSET) >> PAGE_SHIFT)
-
 /*
  * The basic type of a PTE - 32 bit physical addressing.
  */
@@ -77,13 +71,11 @@ typedef unsigned long pte_basic_t;
 #endif /* CONFIG_MMU */
 
 #  ifndef CONFIG_MMU
-#  define copy_page(to, from)                  memcpy((to), (from), PAGE_SIZE)
 #  define get_user_page(vaddr)                 __get_free_page(GFP_KERNEL)
 #  define free_user_page(page, addr)           free_page(addr)
-#  else /* CONFIG_MMU */
-extern void copy_page(void *to, void *from);
 #  endif /* CONFIG_MMU */
 
+# define copy_page(to, from)                   memcpy((to), (from), PAGE_SIZE)
 # define clear_page(pgaddr)                    memset((pgaddr), 0, PAGE_SIZE)
 
 # define clear_user_page(pgaddr, vaddr, page)  memset((pgaddr), 0, PAGE_SIZE)
@@ -154,7 +146,11 @@ extern int page_is_ram(unsigned long pfn);
 # define pfn_to_virt(pfn)      __va(pfn_to_phys((pfn)))
 
 #  ifdef CONFIG_MMU
-#  define virt_to_page(kaddr)  (mem_map +  MAP_NR(kaddr))
+
+#  define virt_to_page(kaddr)  (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT))
+#  define page_to_virt(page)   __va(page_to_pfn(page) << PAGE_SHIFT)
+#  define page_to_phys(page)     (page_to_pfn(page) << PAGE_SHIFT)
+
 #  else /* CONFIG_MMU */
 #  define virt_to_page(vaddr)  (pfn_to_page(virt_to_pfn(vaddr)))
 #  define page_to_virt(page)   (pfn_to_virt(page_to_pfn(page)))