This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-frv / page.h

diff --git a/include/asm-frv/page.h b/include/asm-frv/page.h
new file mode 100644 (file)
index 0000000..f7914f1
--- /dev/null
+++ b/include/asm-frv/page.h
@@ -0,0 +1,105 @@
+#ifndef _ASM_PAGE_H
+#define _ASM_PAGE_H
+
+#ifdef __KERNEL__
+
+#include <linux/config.h>
+#include <asm/virtconvert.h>
+#include <asm/mem-layout.h>
+#include <asm/sections.h>
+#include <asm/setup.h>
+
+#ifndef __ASSEMBLY__
+
+#define get_user_page(vaddr)                   __get_free_page(GFP_KERNEL)
+#define free_user_page(page, addr)             free_page(addr)
+
+#define clear_page(pgaddr)                     memset((pgaddr), 0, PAGE_SIZE)
+#define copy_page(to,from)                     memcpy((to), (from), PAGE_SIZE)
+
+#define clear_user_page(pgaddr, vaddr, page)   memset((pgaddr), 0, PAGE_SIZE)
+#define copy_user_page(vto, vfrom, vaddr, topg)        memcpy((vto), (vfrom), PAGE_SIZE)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef struct { unsigned long pte;    } pte_t;
+typedef struct { unsigned long ste[64];} pmd_t;
+typedef struct { pmd_t         pue[1]; } pud_t;
+typedef struct { pud_t         pge[1]; } pgd_t;
+typedef struct { unsigned long pgprot; } pgprot_t;
+
+#define pte_val(x)     ((x).pte)
+#define pmd_val(x)     ((x).ste[0])
+#define pud_val(x)     ((x).pue[0])
+#define pgd_val(x)     ((x).pge[0])
+#define pgprot_val(x)  ((x).pgprot)
+
+#define __pte(x)       ((pte_t) { (x) } )
+#define __pmd(x)       ((pmd_t) { (x) } )
+#define __pud(x)       ((pud_t) { (x) } )
+#define __pgd(x)       ((pgd_t) { (x) } )
+#define __pgprot(x)    ((pgprot_t) { (x) } )
+#define PTE_MASK       PAGE_MASK
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr)       (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
+
+/* Pure 2^n version of get_order */
+static inline int get_order(unsigned long size) __attribute_const__;
+static 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;
+}
+
+#define devmem_is_allowed(pfn) 1
+
+#define __pa(vaddr)            virt_to_phys((void *) vaddr)
+#define __va(paddr)            phys_to_virt((unsigned long) paddr)
+
+#define pfn_to_kaddr(pfn)      __va((pfn) << PAGE_SHIFT)
+
+extern unsigned long max_low_pfn;
+extern unsigned long min_low_pfn;
+extern unsigned long max_pfn;
+
+#ifdef CONFIG_MMU
+#define pfn_to_page(pfn)       (mem_map + (pfn))
+#define page_to_pfn(page)      ((unsigned long) ((page) - mem_map))
+#define pfn_valid(pfn)         ((pfn) < max_mapnr)
+
+#else
+#define pfn_to_page(pfn)       (&mem_map[(pfn) - (PAGE_OFFSET >> PAGE_SHIFT)])
+#define page_to_pfn(page)      ((PAGE_OFFSET >> PAGE_SHIFT) + (unsigned long) ((page) - mem_map))
+#define pfn_valid(pfn)         ((pfn) >= min_low_pfn && (pfn) < max_low_pfn)
+
+#endif
+
+#define virt_to_page(kaddr)    pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+
+
+#ifdef CONFIG_MMU
+#define VM_DATA_DEFAULT_FLAGS \
+       (VM_READ | VM_WRITE | \
+       ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
+                VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#endif
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __KERNEL__ */
+
+#ifdef CONFIG_CONTIGUOUS_PAGE_ALLOC
+#define WANT_PAGE_VIRTUAL      1
+#endif
+
+#endif /* _ASM_PAGE_H */