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Diffstat (limited to 'include/asm-sh/pgtable.h')
| -rw-r--r-- | include/asm-sh/pgtable.h | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/include/asm-sh/pgtable.h b/include/asm-sh/pgtable.h deleted file mode 100644 index a4a8f8b..0000000 --- a/include/asm-sh/pgtable.h +++ /dev/null @@ -1,152 +0,0 @@ -/* - * This file contains the functions and defines necessary to modify and - * use the SuperH page table tree. - * - * Copyright (C) 1999 Niibe Yutaka - * Copyright (C) 2002 - 2007 Paul Mundt - * - * This file is subject to the terms and conditions of the GNU General - * Public License. See the file "COPYING" in the main directory of this - * archive for more details. - */ -#ifndef __ASM_SH_PGTABLE_H -#define __ASM_SH_PGTABLE_H - -#include <asm-generic/pgtable-nopmd.h> -#include <asm/page.h> - -#ifndef __ASSEMBLY__ -#include <asm/addrspace.h> -#include <asm/fixmap.h> - -/* - * ZERO_PAGE is a global shared page that is always zero: used - * for zero-mapped memory areas etc.. - */ -extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]; -#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) - -#endif /* !__ASSEMBLY__ */ - -/* - * Effective and physical address definitions, to aid with sign - * extension. - */ -#define NEFF 32 -#define NEFF_SIGN (1LL << (NEFF - 1)) -#define NEFF_MASK (-1LL << NEFF) - -#ifdef CONFIG_29BIT -#define NPHYS 29 -#else -#define NPHYS 32 -#endif - -#define NPHYS_SIGN (1LL << (NPHYS - 1)) -#define NPHYS_MASK (-1LL << NPHYS) - -/* - * traditional two-level paging structure - */ -/* PTE bits */ -#if defined(CONFIG_X2TLB) || defined(CONFIG_SUPERH64) -# define PTE_MAGNITUDE 3 /* 64-bit PTEs on extended mode SH-X2 TLB */ -#else -# define PTE_MAGNITUDE 2 /* 32-bit PTEs */ -#endif -#define PTE_SHIFT PAGE_SHIFT -#define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE) - -/* PGD bits */ -#define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS) -#define PGDIR_SIZE (1UL << PGDIR_SHIFT) -#define PGDIR_MASK (~(PGDIR_SIZE-1)) - -/* Entries per level */ -#define PTRS_PER_PTE (PAGE_SIZE / (1 << PTE_MAGNITUDE)) -#define PTRS_PER_PGD (PAGE_SIZE / sizeof(pgd_t)) - -#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) -#define FIRST_USER_ADDRESS 0 - -#ifdef CONFIG_32BIT -#define PHYS_ADDR_MASK 0xffffffff -#else -#define PHYS_ADDR_MASK 0x1fffffff -#endif - -#define PTE_PHYS_MASK (PHYS_ADDR_MASK & PAGE_MASK) - -#ifdef CONFIG_SUPERH32 -#define VMALLOC_START (P3SEG) -#else -#define VMALLOC_START (0xf0000000) -#endif -#define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE) - -#if defined(CONFIG_SUPERH32) -#include <asm/pgtable_32.h> -#else -#include <asm/pgtable_64.h> -#endif - -/* - * SH-X and lower (legacy) SuperH parts (SH-3, SH-4, some SH-4A) can't do page - * protection for execute, and considers it the same as a read. Also, write - * permission implies read permission. This is the closest we can get.. - * - * SH-X2 (SH7785) and later parts take this to the opposite end of the extreme, - * not only supporting separate execute, read, and write bits, but having - * completely separate permission bits for user and kernel space. - */ - /*xwr*/ -#define __P000 PAGE_NONE -#define __P001 PAGE_READONLY -#define __P010 PAGE_COPY -#define __P011 PAGE_COPY -#define __P100 PAGE_EXECREAD -#define __P101 PAGE_EXECREAD -#define __P110 PAGE_COPY -#define __P111 PAGE_COPY - -#define __S000 PAGE_NONE -#define __S001 PAGE_READONLY -#define __S010 PAGE_WRITEONLY -#define __S011 PAGE_SHARED -#define __S100 PAGE_EXECREAD -#define __S101 PAGE_EXECREAD -#define __S110 PAGE_RWX -#define __S111 PAGE_RWX - -typedef pte_t *pte_addr_t; - -#define kern_addr_valid(addr) (1) - -#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ - remap_pfn_range(vma, vaddr, pfn, size, prot) - -#define pte_pfn(x) ((unsigned long)(((x).pte_low >> PAGE_SHIFT))) - -/* - * No page table caches to initialise - */ -#define pgtable_cache_init() do { } while (0) - -#if !defined(CONFIG_CACHE_OFF) && (defined(CONFIG_CPU_SH4) || \ - defined(CONFIG_SH7705_CACHE_32KB)) -struct mm_struct; -#define __HAVE_ARCH_PTEP_GET_AND_CLEAR -pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); -#endif - -struct vm_area_struct; -extern void update_mmu_cache(struct vm_area_struct * vma, - unsigned long address, pte_t pte); -extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; -extern void paging_init(void); -extern void page_table_range_init(unsigned long start, unsigned long end, - pgd_t *pgd); - -#include <asm-generic/pgtable.h> - -#endif /* __ASM_SH_PGTABLE_H */ |
