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Diffstat (limited to 'include/asm-mips/pgtable-32.h')
| -rw-r--r-- | include/asm-mips/pgtable-32.h | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/include/asm-mips/pgtable-32.h b/include/asm-mips/pgtable-32.h deleted file mode 100644 index 55813d6..0000000 --- a/include/asm-mips/pgtable-32.h +++ /dev/null @@ -1,234 +0,0 @@ -/* - * 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. - * - * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000, 2003 Ralf Baechle - * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc. - */ -#ifndef _ASM_PGTABLE_32_H -#define _ASM_PGTABLE_32_H - -#include <asm/addrspace.h> -#include <asm/page.h> - -#include <linux/linkage.h> -#include <asm/cachectl.h> -#include <asm/fixmap.h> - -#include <asm-generic/pgtable-nopmd.h> - -/* - * - add_wired_entry() add a fixed TLB entry, and move wired register - */ -extern void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1, - unsigned long entryhi, unsigned long pagemask); - -/* - * - add_temporary_entry() add a temporary TLB entry. We use TLB entries - * starting at the top and working down. This is for populating the - * TLB before trap_init() puts the TLB miss handler in place. It - * should be used only for entries matching the actual page tables, - * to prevent inconsistencies. - */ -extern int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1, - unsigned long entryhi, unsigned long pagemask); - - -/* Basically we have the same two-level (which is the logical three level - * Linux page table layout folded) page tables as the i386. Some day - * when we have proper page coloring support we can have a 1% quicker - * tlb refill handling mechanism, but for now it is a bit slower but - * works even with the cache aliasing problem the R4k and above have. - */ - -/* PGDIR_SHIFT determines what a third-level page table entry can map */ -#define PGDIR_SHIFT (2 * PAGE_SHIFT + PTE_ORDER - PTE_T_LOG2) -#define PGDIR_SIZE (1UL << PGDIR_SHIFT) -#define PGDIR_MASK (~(PGDIR_SIZE-1)) - -/* - * Entries per page directory level: we use two-level, so - * we don't really have any PUD/PMD directory physically. - */ -#define __PGD_ORDER (32 - 3 * PAGE_SHIFT + PGD_T_LOG2 + PTE_T_LOG2) -#define PGD_ORDER (__PGD_ORDER >= 0 ? __PGD_ORDER : 0) -#define PUD_ORDER aieeee_attempt_to_allocate_pud -#define PMD_ORDER 1 -#define PTE_ORDER 0 - -#define PTRS_PER_PGD (USER_PTRS_PER_PGD * 2) -#define PTRS_PER_PTE ((PAGE_SIZE << PTE_ORDER) / sizeof(pte_t)) - -#define USER_PTRS_PER_PGD (0x80000000UL/PGDIR_SIZE) -#define FIRST_USER_ADDRESS 0 - -#define VMALLOC_START MAP_BASE - -#define PKMAP_BASE (0xfe000000UL) - -#ifdef CONFIG_HIGHMEM -# define VMALLOC_END (PKMAP_BASE-2*PAGE_SIZE) -#else -# define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE) -#endif - -#ifdef CONFIG_64BIT_PHYS_ADDR -#define pte_ERROR(e) \ - printk("%s:%d: bad pte %016Lx.\n", __FILE__, __LINE__, pte_val(e)) -#else -#define pte_ERROR(e) \ - printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e)) -#endif -#define pgd_ERROR(e) \ - printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) - -extern void load_pgd(unsigned long pg_dir); - -extern pte_t invalid_pte_table[PAGE_SIZE/sizeof(pte_t)]; - -/* - * Empty pgd/pmd entries point to the invalid_pte_table. - */ -static inline int pmd_none(pmd_t pmd) -{ - return pmd_val(pmd) == (unsigned long) invalid_pte_table; -} - -#define pmd_bad(pmd) (pmd_val(pmd) & ~PAGE_MASK) - -static inline int pmd_present(pmd_t pmd) -{ - return pmd_val(pmd) != (unsigned long) invalid_pte_table; -} - -static inline void pmd_clear(pmd_t *pmdp) -{ - pmd_val(*pmdp) = ((unsigned long) invalid_pte_table); -} - -#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) -#define pte_page(x) pfn_to_page(pte_pfn(x)) -#define pte_pfn(x) ((unsigned long)((x).pte_high >> 6)) -static inline pte_t -pfn_pte(unsigned long pfn, pgprot_t prot) -{ - pte_t pte; - pte.pte_high = (pfn << 6) | (pgprot_val(prot) & 0x3f); - pte.pte_low = pgprot_val(prot); - return pte; -} - -#else - -#define pte_page(x) pfn_to_page(pte_pfn(x)) - -#ifdef CONFIG_CPU_VR41XX -#define pte_pfn(x) ((unsigned long)((x).pte >> (PAGE_SHIFT + 2))) -#define pfn_pte(pfn, prot) __pte(((pfn) << (PAGE_SHIFT + 2)) | pgprot_val(prot)) -#else -#define pte_pfn(x) ((unsigned long)((x).pte >> PAGE_SHIFT)) -#define pfn_pte(pfn, prot) __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot)) -#endif -#endif /* defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) */ - -#define __pgd_offset(address) pgd_index(address) -#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1)) -#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)) - -/* to find an entry in a kernel page-table-directory */ -#define pgd_offset_k(address) pgd_offset(&init_mm, address) - -#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1)) - -/* to find an entry in a page-table-directory */ -#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr)) - -/* Find an entry in the third-level page table.. */ -#define __pte_offset(address) \ - (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) -#define pte_offset(dir, address) \ - ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address)) -#define pte_offset_kernel(dir, address) \ - ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address)) - -#define pte_offset_map(dir, address) \ - ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address)) -#define pte_offset_map_nested(dir, address) \ - ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address)) -#define pte_unmap(pte) ((void)(pte)) -#define pte_unmap_nested(pte) ((void)(pte)) - -#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) - -/* Swap entries must have VALID bit cleared. */ -#define __swp_type(x) (((x).val >> 10) & 0x1f) -#define __swp_offset(x) ((x).val >> 15) -#define __swp_entry(type,offset) \ - ((swp_entry_t) { ((type) << 10) | ((offset) << 15) }) - -/* - * Bits 0, 4, 8, and 9 are taken, split up 28 bits of offset into this range: - */ -#define PTE_FILE_MAX_BITS 28 - -#define pte_to_pgoff(_pte) ((((_pte).pte >> 1 ) & 0x07) | \ - (((_pte).pte >> 2 ) & 0x38) | \ - (((_pte).pte >> 10) << 6 )) - -#define pgoff_to_pte(off) ((pte_t) { (((off) & 0x07) << 1 ) | \ - (((off) & 0x38) << 2 ) | \ - (((off) >> 6 ) << 10) | \ - _PAGE_FILE }) - -#else - -/* Swap entries must have VALID and GLOBAL bits cleared. */ -#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) -#define __swp_type(x) (((x).val >> 2) & 0x1f) -#define __swp_offset(x) ((x).val >> 7) -#define __swp_entry(type,offset) \ - ((swp_entry_t) { ((type) << 2) | ((offset) << 7) }) -#else -#define __swp_type(x) (((x).val >> 8) & 0x1f) -#define __swp_offset(x) ((x).val >> 13) -#define __swp_entry(type,offset) \ - ((swp_entry_t) { ((type) << 8) | ((offset) << 13) }) -#endif /* defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) */ - -#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) -/* - * Bits 0 and 1 of pte_high are taken, use the rest for the page offset... - */ -#define PTE_FILE_MAX_BITS 30 - -#define pte_to_pgoff(_pte) ((_pte).pte_high >> 2) -#define pgoff_to_pte(off) ((pte_t) { _PAGE_FILE, (off) << 2 }) - -#else -/* - * Bits 0, 4, 6, and 7 are taken, split up 28 bits of offset into this range: - */ -#define PTE_FILE_MAX_BITS 28 - -#define pte_to_pgoff(_pte) ((((_pte).pte >> 1) & 0x7) | \ - (((_pte).pte >> 2) & 0x8) | \ - (((_pte).pte >> 8) << 4)) - -#define pgoff_to_pte(off) ((pte_t) { (((off) & 0x7) << 1) | \ - (((off) & 0x8) << 2) | \ - (((off) >> 4) << 8) | \ - _PAGE_FILE }) -#endif - -#endif - -#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) -#define __pte_to_swp_entry(pte) ((swp_entry_t) { (pte).pte_high }) -#define __swp_entry_to_pte(x) ((pte_t) { 0, (x).val }) -#else -#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) -#define __swp_entry_to_pte(x) ((pte_t) { (x).val }) -#endif - -#endif /* _ASM_PGTABLE_32_H */ |