patch-2.4.19 linux-2.4.19/include/asm-mips/page.h

• Lines: 117
• Date: Fri Aug 2 17:39:45 2002
• Orig file: linux-2.4.18/include/asm-mips/page.h
• Orig date: Wed Aug 9 13:46:02 2000

diff -urN linux-2.4.18/include/asm-mips/page.h linux-2.4.19/include/asm-mips/page.h
@@ -1,5 +1,4 @@
-/* $Id: page.h,v 1.9 2000/02/24 00:13:19 ralf Exp $
- *
+/*
  * Definitions for page handling
  *
  * This file is subject to the terms and conditions of the GNU General Public
@@ -11,18 +10,55 @@
 #ifndef __ASM_PAGE_H
 #define __ASM_PAGE_H
 
+#include <linux/config.h>
+
 /* PAGE_SHIFT determines the page size */
 #define PAGE_SHIFT	12
-#define PAGE_SIZE	(1UL << PAGE_SHIFT)
+#define PAGE_SIZE	(1L << PAGE_SHIFT)
 #define PAGE_MASK	(~(PAGE_SIZE-1))
 
 #ifdef __KERNEL__
 
-#ifndef _LANGUAGE_ASSEMBLY
+#ifndef __ASSEMBLY__
 
 #define BUG() do { printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); *(int *)0=0; } while (0)
 #define PAGE_BUG(page) do {  BUG(); } while (0)
 
+/*
+ * Prototypes for clear_page / copy_page variants with processor dependant
+ * optimizations.
+ */
+void andes_clear_page(void * page);
+void mips32_clear_page_dc(unsigned long page);
+void mips32_clear_page_sc(unsigned long page);
+void r3k_clear_page(void * page);
+void r4k_clear_page_d16(void * page);
+void r4k_clear_page_d32(void * page);
+void r4k_clear_page_r4600_v1(void * page);
+void r4k_clear_page_r4600_v2(void * page);
+void r4k_clear_page_s16(void * page);
+void r4k_clear_page_s32(void * page);
+void r4k_clear_page_s64(void * page);
+void r4k_clear_page_s128(void * page);
+void r5432_clear_page_d32(void * page);
+void rm7k_clear_page(void * page);
+void sb1_clear_page(void * page);
+void andes_copy_page(void * to, void * from);
+void mips32_copy_page_dc(unsigned long to, unsigned long from);
+void mips32_copy_page_sc(unsigned long to, unsigned long from);
+void r3k_copy_page(void * to, void * from);
+void r4k_copy_page_d16(void * to, void * from);
+void r4k_copy_page_d32(void * to, void * from);
+void r4k_copy_page_r4600_v1(void * to, void * from);
+void r4k_copy_page_r4600_v2(void * to, void * from);
+void r4k_copy_page_s16(void * to, void * from);
+void r4k_copy_page_s32(void * to, void * from);
+void r4k_copy_page_s64(void * to, void * from);
+void r4k_copy_page_s128(void * to, void * from);
+void r5432_copy_page_d32(void * to, void * from);
+void rm7k_copy_page(void * to, void * from);
+void sb1_copy_page(void * to, void * from);
+
 extern void (*_clear_page)(void * page);
 extern void (*_copy_page)(void * to, void * from);
 
@@ -34,7 +70,11 @@
 /*
  * These are used to make use of C type-checking..
  */
+#ifdef CONFIG_64BIT_PHYS_ADDR
+typedef struct { unsigned long long pte; } pte_t;
+#else
 typedef struct { unsigned long pte; } pte_t;
+#endif
 typedef struct { unsigned long pmd; } pmd_t;
 typedef struct { unsigned long pgd; } pgd_t;
 typedef struct { unsigned long pgprot; } pgprot_t;
@@ -44,8 +84,10 @@
 #define pgd_val(x)	((x).pgd)
 #define pgprot_val(x)	((x).pgprot)
 
+#define ptep_buddy(x)	((pte_t *)((unsigned long)(x) ^ sizeof(pte_t)))
+
 #define __pte(x)	((pte_t) { (x) } )
-#define __pme(x)	((pme_t) { (x) } )
+#define __pmd(x)	((pmd_t) { (x) } )
 #define __pgd(x)	((pgd_t) { (x) } )
 #define __pgprot(x)	((pgprot_t) { (x) } )
 
@@ -63,10 +105,10 @@
 	return order;
 }
 
-#endif /* _LANGUAGE_ASSEMBLY */
+#endif /* !__ASSEMBLY__ */
 
 /* to align the pointer to the (next) page boundary */
-#define PAGE_ALIGN(addr)	(((addr)+PAGE_SIZE-1)&PAGE_MASK)
+#define PAGE_ALIGN(addr)	(((addr) + PAGE_SIZE - 1) & PAGE_MASK)
 
 /*
  * This handles the memory map.
@@ -78,6 +120,14 @@
 #define virt_to_page(kaddr)	(mem_map + (__pa(kaddr) >> PAGE_SHIFT))
 #define VALID_PAGE(page)	((page - mem_map) < max_mapnr)
 
+#define VM_DATA_DEFAULT_FLAGS  (VM_READ | VM_WRITE | VM_EXEC | \
+				VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+/*
+ * Memory above this physical address will be considered highmem.
+ */
+#define HIGHMEM_START	(0x20000000)
+
 #endif /* defined (__KERNEL__) */
 
 #endif /* __ASM_PAGE_H */