1 files changed, 146 insertions, 0 deletions

diff --git a/include/asm-v850/page.h b/include/asm-v850/page.h
new file mode 100644
index 000000000000..06085b0c043e
--- /dev/null
+++ b/include/asm-v850/page.h
@@ -0,0 +1,146 @@
+/*
+ * include/asm-v850/page.h -- VM ops
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#ifndef __V850_PAGE_H__
+#define __V850_PAGE_H__
+
+#include <asm/machdep.h>
+
+
+#define PAGE_SHIFT      12
+#define PAGE_SIZE       (1UL << PAGE_SHIFT)
+#define PAGE_MASK       (~(PAGE_SIZE-1))
+
+
+/*
+ * PAGE_OFFSET -- the first address of the first page of memory. For archs with
+ * no MMU this corresponds to the first free page in physical memory (aligned
+ * on a page boundary).
+ */
+#ifndef PAGE_OFFSET
+#define PAGE_OFFSET  0x0000000
+#endif
+
+
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+
+#define STRICT_MM_TYPECHECKS
+
+#define clear_page(page)        memset ((void *)(page), 0, PAGE_SIZE)
+#define copy_page(to, from)     memcpy ((void *)(to), (void *)from, PAGE_SIZE)
+
+#define clear_user_page(addr, vaddr, page)      \
+        do {    clear_page(addr);               \
+                flush_dcache_page(page);        \
+        } while (0)
+#define copy_user_page(to, from, vaddr, page)   \
+        do {    copy_page(to, from);            \
+                flush_dcache_page(page);        \
+        } while (0)
+
+#ifdef STRICT_MM_TYPECHECKS
+/*
+ * These are used to make use of C type-checking..
+ */
+
+typedef struct { unsigned long pte; } pte_t;
+typedef struct { unsigned long pmd; } pmd_t;
+typedef struct { unsigned long pgd; } pgd_t;
+typedef struct { unsigned long pgprot; } pgprot_t;
+
+#define pte_val(x)      ((x).pte)
+#define pmd_val(x)      ((x).pmd)
+#define pgd_val(x)      ((x).pgd)
+#define pgprot_val(x)   ((x).pgprot)
+
+#define __pte(x)        ((pte_t) { (x) } )
+#define __pmd(x)        ((pmd_t) { (x) } )
+#define __pgd(x)        ((pgd_t) { (x) } )
+#define __pgprot(x)     ((pgprot_t) { (x) } )
+
+#else /* !STRICT_MM_TYPECHECKS */
+/*
+ * .. while these make it easier on the compiler
+ */
+
+typedef unsigned long pte_t;
+typedef unsigned long pmd_t;
+typedef unsigned long pgd_t;
+typedef unsigned long pgprot_t;
+
+#define pte_val(x)      (x)
+#define pmd_val(x)      (x)
+#define pgd_val(x)      (x)
+#define pgprot_val(x)   (x)
+
+#define __pte(x)        (x)
+#define __pmd(x)        (x)
+#define __pgd(x)        (x)
+#define __pgprot(x)     (x)
+
+#endif /* STRICT_MM_TYPECHECKS */
+
+#endif /* !__ASSEMBLY__ */
+
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr)        (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
+
+
+#ifndef __ASSEMBLY__
+
+/* Pure 2^n version of get_order */
+extern __inline__ int get_order (unsigned long size)
+{
+        int order;
+
+        size = (size-1) >> (PAGE_SHIFT-1);
+        order = -1;
+        do {
+                size >>= 1;
+                order++;
+        } while (size);
+        return order;
+}
+
+#endif /* !__ASSEMBLY__ */
+
+
+/* No current v850 processor has virtual memory.  */
+#define __virt_to_phys(addr)    (addr)
+#define __phys_to_virt(addr)    (addr)
+
+#define virt_to_pfn(kaddr)      (__virt_to_phys (kaddr) >> PAGE_SHIFT)
+#define pfn_to_virt(pfn)        __phys_to_virt ((pfn) << PAGE_SHIFT)
+
+#define MAP_NR(kaddr) \
+  (((unsigned long)(kaddr) - PAGE_OFFSET) >> PAGE_SHIFT)
+#define virt_to_page(kaddr)     (mem_map + MAP_NR (kaddr))
+#define page_to_virt(page) \
+  ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
+
+#define pfn_to_page(pfn)        virt_to_page (pfn_to_virt (pfn))
+#define page_to_pfn(page)       virt_to_pfn (page_to_virt (page))
+
+#define virt_addr_valid(kaddr)                                          \
+  (((void *)(kaddr) >= (void *)PAGE_OFFSET) && MAP_NR (kaddr) < max_mapnr)
+
+
+#define __pa(x)              __virt_to_phys ((unsigned long)(x))
+#define __va(x)              ((void *)__phys_to_virt ((unsigned long)(x)))
+
+
+#endif /* KERNEL */
+
+#endif /* __V850_PAGE_H__ */