net: Make setsockopt() optlen be unsigned.

[safe/jmp/linux-2.6] / include / asm-generic / page.h

diff --git a/include/asm-generic/page.h b/include/asm-generic/page.h
index 14db733..75fec18 100644 (file)
--- a/include/asm-generic/page.h
+++ b/include/asm-generic/page.h
@@ -1,24 +1,99 @@
-#ifndef _ASM_GENERIC_PAGE_H
-#define _ASM_GENERIC_PAGE_H
+#ifndef __ASM_GENERIC_PAGE_H
+#define __ASM_GENERIC_PAGE_H
+/*
+ * Generic page.h implementation, for NOMMU architectures.
+ * This provides the dummy definitions for the memory management.
+ */
+
+#ifdef CONFIG_MMU
+#error need to prove a real asm/page.h
+#endif
+
+
+/* PAGE_SHIFT determines the page size */
+
+#define PAGE_SHIFT     12
+#ifdef __ASSEMBLY__
+#define PAGE_SIZE      (1 << PAGE_SHIFT)
+#else
+#define PAGE_SIZE      (1UL << PAGE_SHIFT)
+#endif
+#define PAGE_MASK      (~(PAGE_SIZE-1))
+
+#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(page)       memset((page), 0, PAGE_SIZE)
+#define copy_page(to,from)     memcpy((to), (from), PAGE_SIZE)
+
+#define clear_user_page(page, vaddr, pg)       clear_page(page)
+#define copy_user_page(to, from, vaddr, pg)    copy_page(to, from)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef struct {
+       unsigned long pte;
+} pte_t;
+typedef struct {
+       unsigned long pmd[16];
+} pmd_t;
+typedef struct {
+       unsigned long pgd;
+} pgd_t;
+typedef struct {
+       unsigned long pgprot;
+} pgprot_t;
+typedef struct page *pgtable_t;
+
+#define pte_val(x)     ((x).pte)
+#define pmd_val(x)     ((&x)->pmd[0])
+#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) } )
+
+extern unsigned long memory_start;
+extern unsigned long memory_end;
+
+#endif /* !__ASSEMBLY__ */
+
+#ifdef CONFIG_KERNEL_RAM_BASE_ADDRESS
+#define PAGE_OFFSET            (CONFIG_KERNEL_RAM_BASE_ADDRESS)
+#else
+#define PAGE_OFFSET            (0)
+#endif
 
 #ifndef __ASSEMBLY__
 
-#include <linux/compiler.h>
+#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET))
+#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
+
+#define virt_to_pfn(kaddr)     (__pa(kaddr) >> PAGE_SHIFT)
+#define pfn_to_virt(pfn)       __va((pfn) << PAGE_SHIFT)
+
+#define virt_to_page(addr)     (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
+#define page_to_virt(page)     ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
+
+#ifndef page_to_phys
+#define page_to_phys(page)      ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
+#endif
+
+#define pfn_valid(pfn)         ((pfn) < max_mapnr)
 
-/* Pure 2^n version of get_order */
-static __inline__ __attribute_const__ int get_order(unsigned long size)
-{
-       int order;
+#define        virt_addr_valid(kaddr)  (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
+                               ((void *)(kaddr) < (void *)memory_end))
 
-       size = (size - 1) >> (PAGE_SHIFT - 1);
-       order = -1;
-       do {
-               size >>= 1;
-               order++;
-       } while (size);
-       return order;
-}
+#endif /* __ASSEMBLY__ */
 
-#endif /* __ASSEMBLY__ */
+#include <asm-generic/memory_model.h>
+#include <asm-generic/getorder.h>
 
-#endif /* _ASM_GENERIC_PAGE_H */
+#endif /* __ASM_GENERIC_PAGE_H */