diff options
Diffstat (limited to 'arch/tile/include/asm/pgtable_32.h')
-rw-r--r-- | arch/tile/include/asm/pgtable_32.h | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/arch/tile/include/asm/pgtable_32.h b/arch/tile/include/asm/pgtable_32.h deleted file mode 100644 index 5f8c615cb5e9..000000000000 --- a/arch/tile/include/asm/pgtable_32.h +++ /dev/null @@ -1,122 +0,0 @@ -/* - * Copyright 2010 Tilera Corporation. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation, version 2. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for - * more details. - * - */ - -#ifndef _ASM_TILE_PGTABLE_32_H -#define _ASM_TILE_PGTABLE_32_H - -/* - * The level-1 index is defined by the huge page size. A PGD is composed - * of PTRS_PER_PGD pgd_t's and is the top level of the page table. - */ -#define PGDIR_SHIFT HPAGE_SHIFT -#define PGDIR_SIZE HPAGE_SIZE -#define PGDIR_MASK (~(PGDIR_SIZE-1)) -#define PTRS_PER_PGD _HV_L1_ENTRIES(HPAGE_SHIFT) -#define PGD_INDEX(va) _HV_L1_INDEX(va, HPAGE_SHIFT) -#define SIZEOF_PGD _HV_L1_SIZE(HPAGE_SHIFT) - -/* - * The level-2 index is defined by the difference between the huge - * page size and the normal page size. A PTE is composed of - * PTRS_PER_PTE pte_t's and is the bottom level of the page table. - * Note that the hypervisor docs use PTE for what we call pte_t, so - * this nomenclature is somewhat confusing. - */ -#define PTRS_PER_PTE _HV_L2_ENTRIES(HPAGE_SHIFT, PAGE_SHIFT) -#define PTE_INDEX(va) _HV_L2_INDEX(va, HPAGE_SHIFT, PAGE_SHIFT) -#define SIZEOF_PTE _HV_L2_SIZE(HPAGE_SHIFT, PAGE_SHIFT) - -#ifndef __ASSEMBLY__ - -/* - * Right now we initialize only a single pte table. It can be extended - * easily, subsequent pte tables have to be allocated in one physical - * chunk of RAM. - * - * HOWEVER, if we are using an allocation scheme with slop after the - * end of the page table (e.g. where our L2 page tables are 2KB but - * our pages are 64KB and we are allocating via the page allocator) - * we can't extend it easily. - */ -#define LAST_PKMAP PTRS_PER_PTE - -#define PKMAP_BASE ((FIXADDR_BOOT_START - PAGE_SIZE*LAST_PKMAP) & PGDIR_MASK) - -#ifdef CONFIG_HIGHMEM -# define _VMALLOC_END (PKMAP_BASE & ~(HPAGE_SIZE-1)) -#else -# define _VMALLOC_END (FIXADDR_START & ~(HPAGE_SIZE-1)) -#endif - -/* - * Align the vmalloc area to an L2 page table, and leave a guard page - * at the beginning and end. The vmalloc code also puts in an internal - * guard page between each allocation. - */ -#define VMALLOC_END (_VMALLOC_END - PAGE_SIZE) -extern unsigned long VMALLOC_RESERVE /* = CONFIG_VMALLOC_RESERVE */; -#define _VMALLOC_START (_VMALLOC_END - VMALLOC_RESERVE) -#define VMALLOC_START (_VMALLOC_START + PAGE_SIZE) - -/* This is the maximum possible amount of lowmem. */ -#define MAXMEM (_VMALLOC_START - PAGE_OFFSET) - -/* We have no pmd or pud since we are strictly a two-level page table */ -#define __ARCH_USE_5LEVEL_HACK -#include <asm-generic/pgtable-nopmd.h> - -static inline int pud_huge_page(pud_t pud) { return 0; } - -/* We don't define any pgds for these addresses. */ -static inline int pgd_addr_invalid(unsigned long addr) -{ - return addr >= MEM_HV_START; -} - -/* - * Provide versions of these routines that can be used safely when - * the hypervisor may be asynchronously modifying dirty/accessed bits. - * ptep_get_and_clear() matches the generic one but we provide it to - * be parallel with the 64-bit code. - */ -#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG -#define __HAVE_ARCH_PTEP_SET_WRPROTECT - -extern int ptep_test_and_clear_young(struct vm_area_struct *, - unsigned long addr, pte_t *); -extern void ptep_set_wrprotect(struct mm_struct *, - unsigned long addr, pte_t *); - -#define __HAVE_ARCH_PTEP_GET_AND_CLEAR -static inline pte_t ptep_get_and_clear(struct mm_struct *mm, - unsigned long addr, pte_t *ptep) -{ - pte_t pte = *ptep; - pte_clear(_mm, addr, ptep); - return pte; -} - -/* - * pmds are wrappers around pgds, which are the same as ptes. - * It's often convenient to "cast" back and forth and use the pte methods, - * which are the methods supplied by the hypervisor. - */ -#define pmd_pte(pmd) ((pmd).pud.pgd) -#define pmdp_ptep(pmdp) (&(pmdp)->pud.pgd) -#define pte_pmd(pte) ((pmd_t){ { (pte) } }) - -#endif /* __ASSEMBLY__ */ - -#endif /* _ASM_TILE_PGTABLE_32_H */ |