diff options
| -rw-r--r-- | include/asm-xtensa/page.h.n | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/include/asm-xtensa/page.h.n b/include/asm-xtensa/page.h.n deleted file mode 100644 index 546cc6624f24..000000000000 --- a/include/asm-xtensa/page.h.n +++ /dev/null @@ -1,135 +0,0 @@ -/* - * 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 */ |