[PATCH] xtensa: delete accidental file

/*

 * linux/include/asm-xtensa/page.h

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version2 as

 * published by the Free Software Foundation.

 *

 * Copyright (C) 2001 - 2005 Tensilica Inc.

 */

#ifndef _XTENSA_PAGE_H

#define _XTENSA_PAGE_H

#ifdef __KERNEL__

#include <asm/processor.h>

#include <linux/config.h>

/*

 * PAGE_SHIFT determines the page size

 * PAGE_ALIGN(x) aligns the pointer to the (next) page boundary

 */

#define PAGE_SHIFT		XCHAL_MMU_MIN_PTE_PAGE_SIZE

#define PAGE_SIZE		(1 << PAGE_SHIFT)

#define PAGE_MASK		(~(PAGE_SIZE-1))

#define PAGE_ALIGN(addr)	(((addr)+PAGE_SIZE - 1) & PAGE_MASK)

#define DCACHE_WAY_SIZE		(XCHAL_DCACHE_SIZE / XCHAL_DCACHE_WAYS)

#define PAGE_OFFSET		XCHAL_KSEG_CACHED_VADDR

#ifdef __ASSEMBLY__

#define __pgprot(x)	(x)

#else

/*

 * These are used to make use of C type-checking..

 */

typedef struct { unsigned long pte; } pte_t;		/* page table entry */

typedef struct { unsigned long pmd; } pmd_t;		/* PMD table entry */

typedef struct { unsigned long pgd; } pgd_t;		/* PGD table entry */

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) } )

/*

 * Pure 2^n version of get_order

 */

extern __inline__ int get_order(unsigned long size)

{

	int order;

#ifndef XCHAL_HAVE_NSU

	unsigned long x1, x2, x4, x8, x16;

	size = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;

	x1  = size & 0xAAAAAAAA;

	x2  = size & 0xCCCCCCCC;

	x4  = size & 0xF0F0F0F0;

	x8  = size & 0xFF00FF00;

	x16 = size & 0xFFFF0000;

	order = x2 ? 2 : 0;

	order += (x16 != 0) * 16;

	order += (x8 != 0) * 8;

	order += (x4 != 0) * 4;

	order += (x1 != 0);

	return order;

#else

	size = (size - 1) >> PAGE_SHIFT;

	asm ("nsau %0, %1" : "=r" (order) : "r" (size));

	return 32 - order;

#endif

}

struct page;

extern void clear_page(void *page);

extern void copy_page(void *to, void *from);

/*

 * If we have cache aliasing and writeback caches, we might have to do

 * some extra work

 */

#if (DCACHE_WAY_SIZE > PAGE_SIZE) && XCHAL_DCACHE_IS_WRITEBACK

void clear_user_page(void *addr, unsigned long vaddr, struct page* page);

void copy_user_page(void *to, void* from, unsigned long vaddr, struct page* page);

#else

# define clear_user_page(page,vaddr,pg)		clear_page(page)

# define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)

#endif

/*

 * This handles the memory map.  We handle pages at

 * XCHAL_KSEG_CACHED_VADDR for kernels with 32 bit address space.

 * These macros are for conversion of kernel address, not user

 * addresses.

 */

#define __pa(x)			((unsigned long) (x) - PAGE_OFFSET)

#define __va(x)			((void *)((unsigned long) (x) + PAGE_OFFSET))

#define pfn_valid(pfn)		((unsigned long)pfn < max_mapnr)

#ifndef CONFIG_DISCONTIGMEM

# define pfn_to_page(pfn)	(mem_map + (pfn))

# define page_to_pfn(page)	((unsigned long)((page) - mem_map))

#else

# error CONFIG_DISCONTIGMEM not supported

#endif

#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 virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

#define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)

#define WANT_PAGE_VIRTUAL

#endif /* __ASSEMBLY__ */

#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \

				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)

#endif /* __KERNEL__ */

#endif /* _XTENSA_PAGE_H */