+++ /dev/null
-#ifndef _ASM_POWERPC_PAGE_64_H
-#define _ASM_POWERPC_PAGE_64_H
-
-/*
- * Copyright (C) 2001 PPC64 Team, IBM Corp
- *
- * 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; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-/*
- * We always define HW_PAGE_SHIFT to 12 as use of 64K pages remains Linux
- * specific, every notion of page number shared with the firmware, TCEs,
- * iommu, etc... still uses a page size of 4K.
- */
-#define HW_PAGE_SHIFT 12
-#define HW_PAGE_SIZE (ASM_CONST(1) << HW_PAGE_SHIFT)
-#define HW_PAGE_MASK (~(HW_PAGE_SIZE-1))
-
-/*
- * PAGE_FACTOR is the number of bits factor between PAGE_SHIFT and
- * HW_PAGE_SHIFT, that is 4K pages.
- */
-#define PAGE_FACTOR (PAGE_SHIFT - HW_PAGE_SHIFT)
-
-/* Segment size; normal 256M segments */
-#define SID_SHIFT 28
-#define SID_MASK ASM_CONST(0xfffffffff)
-#define ESID_MASK 0xfffffffff0000000UL
-#define GET_ESID(x) (((x) >> SID_SHIFT) & SID_MASK)
-
-/* 1T segments */
-#define SID_SHIFT_1T 40
-#define SID_MASK_1T 0xffffffUL
-#define ESID_MASK_1T 0xffffff0000000000UL
-#define GET_ESID_1T(x) (((x) >> SID_SHIFT_1T) & SID_MASK_1T)
-
-#ifndef __ASSEMBLY__
-#include <asm/cache.h>
-
-typedef unsigned long pte_basic_t;
-
-static __inline__ void clear_page(void *addr)
-{
- unsigned long lines, line_size;
-
- line_size = ppc64_caches.dline_size;
- lines = ppc64_caches.dlines_per_page;
-
- __asm__ __volatile__(
- "mtctr %1 # clear_page\n\
-1: dcbz 0,%0\n\
- add %0,%0,%3\n\
- bdnz+ 1b"
- : "=r" (addr)
- : "r" (lines), "0" (addr), "r" (line_size)
- : "ctr", "memory");
-}
-
-extern void copy_4K_page(void *to, void *from);
-
-#ifdef CONFIG_PPC_64K_PAGES
-static inline void copy_page(void *to, void *from)
-{
- unsigned int i;
- for (i=0; i < (1 << (PAGE_SHIFT - 12)); i++) {
- copy_4K_page(to, from);
- to += 4096;
- from += 4096;
- }
-}
-#else /* CONFIG_PPC_64K_PAGES */
-static inline void copy_page(void *to, void *from)
-{
- copy_4K_page(to, from);
-}
-#endif /* CONFIG_PPC_64K_PAGES */
-
-/* Log 2 of page table size */
-extern u64 ppc64_pft_size;
-
-/* Large pages size */
-#ifdef CONFIG_HUGETLB_PAGE
-extern unsigned int HPAGE_SHIFT;
-#else
-#define HPAGE_SHIFT PAGE_SHIFT
-#endif
-#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT)
-#define HPAGE_MASK (~(HPAGE_SIZE - 1))
-#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
-#define HUGE_MAX_HSTATE 3
-
-#endif /* __ASSEMBLY__ */
-
-#ifdef CONFIG_PPC_MM_SLICES
-
-#define SLICE_LOW_SHIFT 28
-#define SLICE_HIGH_SHIFT 40
-
-#define SLICE_LOW_TOP (0x100000000ul)
-#define SLICE_NUM_LOW (SLICE_LOW_TOP >> SLICE_LOW_SHIFT)
-#define SLICE_NUM_HIGH (PGTABLE_RANGE >> SLICE_HIGH_SHIFT)
-
-#define GET_LOW_SLICE_INDEX(addr) ((addr) >> SLICE_LOW_SHIFT)
-#define GET_HIGH_SLICE_INDEX(addr) ((addr) >> SLICE_HIGH_SHIFT)
-
-#ifndef __ASSEMBLY__
-
-struct slice_mask {
- u16 low_slices;
- u16 high_slices;
-};
-
-struct mm_struct;
-
-extern unsigned long slice_get_unmapped_area(unsigned long addr,
- unsigned long len,
- unsigned long flags,
- unsigned int psize,
- int topdown,
- int use_cache);
-
-extern unsigned int get_slice_psize(struct mm_struct *mm,
- unsigned long addr);
-
-extern void slice_init_context(struct mm_struct *mm, unsigned int psize);
-extern void slice_set_user_psize(struct mm_struct *mm, unsigned int psize);
-extern void slice_set_range_psize(struct mm_struct *mm, unsigned long start,
- unsigned long len, unsigned int psize);
-
-#define slice_mm_new_context(mm) ((mm)->context.id == 0)
-
-#endif /* __ASSEMBLY__ */
-#else
-#define slice_init()
-#define get_slice_psize(mm, addr) ((mm)->context.user_psize)
-#define slice_set_user_psize(mm, psize) \
-do { \
- (mm)->context.user_psize = (psize); \
- (mm)->context.sllp = SLB_VSID_USER | mmu_psize_defs[(psize)].sllp; \
-} while (0)
-#define slice_set_range_psize(mm, start, len, psize) \
- slice_set_user_psize((mm), (psize))
-#define slice_mm_new_context(mm) 1
-#endif /* CONFIG_PPC_MM_SLICES */
-
-#ifdef CONFIG_HUGETLB_PAGE
-
-#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
-
-#endif /* !CONFIG_HUGETLB_PAGE */
-
-#ifdef MODULE
-#define __page_aligned __attribute__((__aligned__(PAGE_SIZE)))
-#else
-#define __page_aligned \
- __attribute__((__aligned__(PAGE_SIZE), \
- __section__(".data.page_aligned")))
-#endif
-
-#define VM_DATA_DEFAULT_FLAGS \
- (test_thread_flag(TIF_32BIT) ? \
- VM_DATA_DEFAULT_FLAGS32 : VM_DATA_DEFAULT_FLAGS64)
-
-/*
- * This is the default if a program doesn't have a PT_GNU_STACK
- * program header entry. The PPC64 ELF ABI has a non executable stack
- * stack by default, so in the absense of a PT_GNU_STACK program header
- * we turn execute permission off.
- */
-#define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#define VM_STACK_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#define VM_STACK_DEFAULT_FLAGS \
- (test_thread_flag(TIF_32BIT) ? \
- VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64)
-
-#include <asm-generic/page.h>
-
-#endif /* _ASM_POWERPC_PAGE_64_H */
Code Review / linux-2.6.git / blobdiff