diff options
Diffstat (limited to 'include/asm-ia64')
| -rw-r--r-- | include/asm-ia64/page.h | 8 | ||||
| -rw-r--r-- | include/asm-ia64/pgalloc.h | 19 | ||||
| -rw-r--r-- | include/asm-ia64/pgtable.h | 76 |
3 files changed, 85 insertions, 18 deletions
diff --git a/include/asm-ia64/page.h b/include/asm-ia64/page.h index 9d41548b7fef..9dd9da105278 100644 --- a/include/asm-ia64/page.h +++ b/include/asm-ia64/page.h @@ -47,8 +47,6 @@ #define PERCPU_PAGE_SHIFT 16 /* log2() of max. size of per-CPU area */ #define PERCPU_PAGE_SIZE (__IA64_UL_CONST(1) << PERCPU_PAGE_SHIFT) -#define RGN_MAP_LIMIT ((1UL << (4*PAGE_SHIFT - 12)) - PAGE_SIZE) /* per region addr limit */ - #ifdef CONFIG_HUGETLB_PAGE # define HPAGE_REGION_BASE RGN_BASE(RGN_HPAGE) @@ -175,11 +173,17 @@ get_order (unsigned long size) */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pmd; } pmd_t; +#ifdef CONFIG_PGTABLE_4 + typedef struct { unsigned long pud; } pud_t; +#endif typedef struct { unsigned long pgd; } pgd_t; typedef struct { unsigned long pgprot; } pgprot_t; # define pte_val(x) ((x).pte) # define pmd_val(x) ((x).pmd) +#ifdef CONFIG_PGTABLE_4 +# define pud_val(x) ((x).pud) +#endif # define pgd_val(x) ((x).pgd) # define pgprot_val(x) ((x).pgprot) diff --git a/include/asm-ia64/pgalloc.h b/include/asm-ia64/pgalloc.h index a5f214554afd..f2f233846476 100644 --- a/include/asm-ia64/pgalloc.h +++ b/include/asm-ia64/pgalloc.h @@ -86,6 +86,25 @@ static inline void pgd_free(pgd_t * pgd) pgtable_quicklist_free(pgd); } +#ifdef CONFIG_PGTABLE_4 +static inline void +pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud) +{ + pgd_val(*pgd_entry) = __pa(pud); +} + +static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) +{ + return pgtable_quicklist_alloc(); +} + +static inline void pud_free(pud_t * pud) +{ + pgtable_quicklist_free(pud); +} +#define __pud_free_tlb(tlb, pud) pud_free(pud) +#endif /* CONFIG_PGTABLE_4 */ + static inline void pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd) { diff --git a/include/asm-ia64/pgtable.h b/include/asm-ia64/pgtable.h index c34ba80c1c31..e2560c58384b 100644 --- a/include/asm-ia64/pgtable.h +++ b/include/asm-ia64/pgtable.h @@ -84,32 +84,55 @@ #define __DIRTY_BITS _PAGE_ED | __DIRTY_BITS_NO_ED /* - * Definitions for first level: - * - * PGDIR_SHIFT determines what a first-level page table entry can map. + * How many pointers will a page table level hold expressed in shift */ -#define PGDIR_SHIFT (PAGE_SHIFT + 2*(PAGE_SHIFT-3)) -#define PGDIR_SIZE (__IA64_UL(1) << PGDIR_SHIFT) -#define PGDIR_MASK (~(PGDIR_SIZE-1)) -#define PTRS_PER_PGD (1UL << (PAGE_SHIFT-3)) -#define USER_PTRS_PER_PGD (5*PTRS_PER_PGD/8) /* regions 0-4 are user regions */ -#define FIRST_USER_ADDRESS 0 +#define PTRS_PER_PTD_SHIFT (PAGE_SHIFT-3) /* - * Definitions for second level: + * Definitions for fourth level: + */ +#define PTRS_PER_PTE (__IA64_UL(1) << (PTRS_PER_PTD_SHIFT)) + +/* + * Definitions for third level: * - * PMD_SHIFT determines the size of the area a second-level page table + * PMD_SHIFT determines the size of the area a third-level page table * can map. */ -#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT-3)) +#define PMD_SHIFT (PAGE_SHIFT + (PTRS_PER_PTD_SHIFT)) #define PMD_SIZE (1UL << PMD_SHIFT) #define PMD_MASK (~(PMD_SIZE-1)) -#define PTRS_PER_PMD (1UL << (PAGE_SHIFT-3)) +#define PTRS_PER_PMD (1UL << (PTRS_PER_PTD_SHIFT)) +#ifdef CONFIG_PGTABLE_4 /* - * Definitions for third level: + * Definitions for second level: + * + * PUD_SHIFT determines the size of the area a second-level page table + * can map. */ -#define PTRS_PER_PTE (__IA64_UL(1) << (PAGE_SHIFT-3)) +#define PUD_SHIFT (PMD_SHIFT + (PTRS_PER_PTD_SHIFT)) +#define PUD_SIZE (1UL << PUD_SHIFT) +#define PUD_MASK (~(PUD_SIZE-1)) +#define PTRS_PER_PUD (1UL << (PTRS_PER_PTD_SHIFT)) +#endif + +/* + * Definitions for first level: + * + * PGDIR_SHIFT determines what a first-level page table entry can map. + */ +#ifdef CONFIG_PGTABLE_4 +#define PGDIR_SHIFT (PUD_SHIFT + (PTRS_PER_PTD_SHIFT)) +#else +#define PGDIR_SHIFT (PMD_SHIFT + (PTRS_PER_PTD_SHIFT)) +#endif +#define PGDIR_SIZE (__IA64_UL(1) << PGDIR_SHIFT) +#define PGDIR_MASK (~(PGDIR_SIZE-1)) +#define PTRS_PER_PGD_SHIFT PTRS_PER_PTD_SHIFT +#define PTRS_PER_PGD (1UL << PTRS_PER_PGD_SHIFT) +#define USER_PTRS_PER_PGD (5*PTRS_PER_PGD/8) /* regions 0-4 are user regions */ +#define FIRST_USER_ADDRESS 0 /* * All the normal masks have the "page accessed" bits on, as any time @@ -161,6 +184,9 @@ #define __S111 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RWX) #define pgd_ERROR(e) printk("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__, pgd_val(e)) +#ifdef CONFIG_PGTABLE_4 +#define pud_ERROR(e) printk("%s:%d: bad pud %016lx.\n", __FILE__, __LINE__, pud_val(e)) +#endif #define pmd_ERROR(e) printk("%s:%d: bad pmd %016lx.\n", __FILE__, __LINE__, pmd_val(e)) #define pte_ERROR(e) printk("%s:%d: bad pte %016lx.\n", __FILE__, __LINE__, pte_val(e)) @@ -218,6 +244,9 @@ ia64_phys_addr_valid (unsigned long addr) #define kc_vaddr_to_offset(v) ((v) - RGN_BASE(RGN_GATE)) #define kc_offset_to_vaddr(o) ((o) + RGN_BASE(RGN_GATE)) +#define RGN_MAP_SHIFT (PGDIR_SHIFT + PTRS_PER_PGD_SHIFT - 3) +#define RGN_MAP_LIMIT ((1UL << RGN_MAP_SHIFT) - PAGE_SIZE) /* per region addr limit */ + /* * Conversion functions: convert page frame number (pfn) and a protection value to a page * table entry (pte). @@ -254,9 +283,16 @@ ia64_phys_addr_valid (unsigned long addr) #define pud_bad(pud) (!ia64_phys_addr_valid(pud_val(pud))) #define pud_present(pud) (pud_val(pud) != 0UL) #define pud_clear(pudp) (pud_val(*(pudp)) = 0UL) - #define pud_page(pud) ((unsigned long) __va(pud_val(pud) & _PFN_MASK)) +#ifdef CONFIG_PGTABLE_4 +#define pgd_none(pgd) (!pgd_val(pgd)) +#define pgd_bad(pgd) (!ia64_phys_addr_valid(pgd_val(pgd))) +#define pgd_present(pgd) (pgd_val(pgd) != 0UL) +#define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0UL) +#define pgd_page(pgd) ((unsigned long) __va(pgd_val(pgd) & _PFN_MASK)) +#endif + /* * The following have defined behavior only work if pte_present() is true. */ @@ -324,7 +360,13 @@ pgd_offset (struct mm_struct *mm, unsigned long address) here. */ #define pgd_offset_gate(mm, addr) pgd_offset_k(addr) +#ifdef CONFIG_PGTABLE_4 /* Find an entry in the second-level page table.. */ +#define pud_offset(dir,addr) \ + ((pud_t *) pgd_page(*(dir)) + (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))) +#endif + +/* Find an entry in the third-level page table.. */ #define pmd_offset(dir,addr) \ ((pmd_t *) pud_page(*(dir)) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))) @@ -557,7 +599,9 @@ do { \ #define __HAVE_ARCH_PGD_OFFSET_GATE #define __HAVE_ARCH_LAZY_MMU_PROT_UPDATE +#ifndef CONFIG_PGTABLE_4 #include <asm-generic/pgtable-nopud.h> +#endif #include <asm-generic/pgtable.h> #endif /* _ASM_IA64_PGTABLE_H */ |
