#define PGDIR_MASK (~(PGDIR_SIZE-1))
/* Entries per level */
-#define PTRS_PER_PTE (1UL << PTE_BITS)
-#define PTRS_PER_PGD (1UL << PGDIR_BITS)
+#define PTRS_PER_PTE (PAGE_SIZE / (1 << PTE_MAGNITUDE))
+#define PTRS_PER_PGD (PAGE_SIZE / 4)
#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0
-#define PTE_PHYS_MASK 0x1ffff000
+#define PTE_PHYS_MASK (0x20000000 - PAGE_SIZE)
/*
* First 1MB map is used by fixed purpose.
- * Currently only 4-enty (16kB) is used (see arch/sh/mm/cache.c)
+ * Currently only 4-entry (16kB) is used (see arch/sh/mm/cache.c)
*/
#define VMALLOC_START (P3SEG+0x00100000)
#define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
# endif
#endif
+/*
+ * Stub out _PAGE_SZHUGE if we don't have a good definition for it,
+ * to make pte_mkhuge() happy.
+ */
+#ifndef _PAGE_SZHUGE
+# define _PAGE_SZHUGE (_PAGE_FLAGS_HARD)
+#endif
+
#define _PAGE_CHG_MASK \
(PTE_MASK | _PAGE_ACCESSED | _PAGE_CACHABLE | _PAGE_DIRTY)
#ifndef __ASSEMBLY__
#if defined(CONFIG_X2TLB) /* SH-X2 TLB */
-#define _PAGE_TABLE \
- (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY | \
- _PAGE_EXT(_PAGE_EXT_USER_READ | _PAGE_EXT_USER_WRITE))
-
-#define _KERNPG_TABLE \
- (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY | \
- _PAGE_EXT(_PAGE_EXT_KERN_READ | _PAGE_EXT_KERN_WRITE))
-
#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_CACHABLE | \
_PAGE_ACCESSED | _PAGE_FLAGS_HARD)
#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
_PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
_PAGE_EXT(_PAGE_EXT_USER_READ | \
- _PAGE_EXT_USER_WRITE))
+ _PAGE_EXT_USER_WRITE))
#define PAGE_EXECREAD __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
_PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
_PAGE_EXT(_PAGE_EXT_USER_EXEC | \
- _PAGE_EXT_USER_READ))
+ _PAGE_EXT_USER_READ))
#define PAGE_COPY PAGE_EXECREAD
#define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
_PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
_PAGE_EXT(_PAGE_EXT_USER_WRITE | \
- _PAGE_EXT_USER_READ | \
+ _PAGE_EXT_USER_READ | \
_PAGE_EXT_USER_EXEC))
#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
_PAGE_DIRTY | _PAGE_ACCESSED | \
_PAGE_HW_SHARED | _PAGE_FLAGS_HARD | \
_PAGE_EXT(_PAGE_EXT_KERN_READ | \
- _PAGE_EXT_KERN_WRITE | \
+ _PAGE_EXT_KERN_WRITE | \
_PAGE_EXT_KERN_EXEC))
#define PAGE_KERNEL_NOCACHE \
_PAGE_ACCESSED | _PAGE_HW_SHARED | \
_PAGE_FLAGS_HARD | \
_PAGE_EXT(_PAGE_EXT_KERN_READ | \
- _PAGE_EXT_KERN_WRITE | \
+ _PAGE_EXT_KERN_WRITE | \
_PAGE_EXT_KERN_EXEC))
#define PAGE_KERNEL_RO __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
_PAGE_DIRTY | _PAGE_ACCESSED | \
_PAGE_HW_SHARED | _PAGE_FLAGS_HARD | \
_PAGE_EXT(_PAGE_EXT_KERN_READ | \
- _PAGE_EXT_KERN_EXEC))
+ _PAGE_EXT_KERN_EXEC))
#define PAGE_KERNEL_PCC(slot, type) \
__pgprot(_PAGE_PRESENT | _PAGE_DIRTY | \
_PAGE_ACCESSED | _PAGE_FLAGS_HARD | \
_PAGE_EXT(_PAGE_EXT_KERN_READ | \
- _PAGE_EXT_KERN_WRITE | \
+ _PAGE_EXT_KERN_WRITE | \
_PAGE_EXT_KERN_EXEC) \
(slot ? _PAGE_PCC_AREA5 : _PAGE_PCC_AREA6) | \
(type))
#elif defined(CONFIG_MMU) /* SH-X TLB */
-#define _PAGE_TABLE \
- (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
-#define _KERNPG_TABLE \
- (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY)
-
#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_CACHABLE | \
_PAGE_ACCESSED | _PAGE_FLAGS_HARD)
#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
#define pmd_none(x) (!pmd_val(x))
-#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
+#define pmd_present(x) (pmd_val(x))
#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
-#define pmd_bad(x) ((pmd_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
+#define pmd_bad(x) (pmd_val(x) & ~PAGE_MASK)
#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
#define pte_page(x) phys_to_page(pte_val(x)&PTE_PHYS_MASK)
return pte;
}
-#define pmd_page_vaddr(pmd) \
-((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
-
-#define pmd_page(pmd) \
- (phys_to_page(pmd_val(pmd)))
+#define pmd_page_vaddr(pmd) pmd_val(pmd)
+#define pmd_page(pmd) (virt_to_page(pmd_val(pmd)))
/* to find an entry in a page-table-directory. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
extern void update_mmu_cache(struct vm_area_struct * vma,
unsigned long address, pte_t pte);
-/* Encode and de-code a swap entry */
/*
+ * Encode and de-code a swap entry
+ *
+ * Constraints:
+ * _PAGE_FILE at bit 0
+ * _PAGE_PRESENT at bit 8
+ * _PAGE_PROTNONE at bit 9
+ *
+ * For the normal case, we encode the swap type into bits 0:7 and the
+ * swap offset into bits 10:30. For the 64-bit PTE case, we keep the
+ * preserved bits in the low 32-bits and use the upper 32 as the swap
+ * offset (along with a 5-bit type), following the same approach as x86
+ * PAE. This keeps the logic quite simple, and allows for a full 32
+ * PTE_FILE_MAX_BITS, as opposed to the 29-bits we're constrained with
+ * in the pte_low case.
+ *
+ * As is evident by the Alpha code, if we ever get a 64-bit unsigned
+ * long (swp_entry_t) to match up with the 64-bit PTEs, this all becomes
+ * much cleaner..
+ *
* NOTE: We should set ZEROs at the position of _PAGE_PRESENT
* and _PAGE_PROTNONE bits
*/
-#define __swp_type(x) ((x).val & 0xff)
-#define __swp_offset(x) ((x).val >> 10)
-#define __swp_entry(type, offset) ((swp_entry_t) { (type) | ((offset) << 10) })
-#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) >> 1 })
-#define __swp_entry_to_pte(x) ((pte_t) { (x).val << 1 })
+#ifdef CONFIG_X2TLB
+#define __swp_type(x) ((x).val & 0x1f)
+#define __swp_offset(x) ((x).val >> 5)
+#define __swp_entry(type, offset) ((swp_entry_t){ (type) | (offset) << 5})
+#define __pte_to_swp_entry(pte) ((swp_entry_t){ (pte).pte_high })
+#define __swp_entry_to_pte(x) ((pte_t){ 0, (x).val })
+
+/*
+ * Encode and decode a nonlinear file mapping entry
+ */
+#define pte_to_pgoff(pte) ((pte).pte_high)
+#define pgoff_to_pte(off) ((pte_t) { _PAGE_FILE, (off) })
+
+#define PTE_FILE_MAX_BITS 32
+#else
+#define __swp_type(x) ((x).val & 0xff)
+#define __swp_offset(x) ((x).val >> 10)
+#define __swp_entry(type, offset) ((swp_entry_t){(type) | (offset) <<10})
+
+#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) >> 1 })
+#define __swp_entry_to_pte(x) ((pte_t) { (x).val << 1 })
/*
* Encode and decode a nonlinear file mapping entry
#define PTE_FILE_MAX_BITS 29
#define pte_to_pgoff(pte) (pte_val(pte) >> 1)
#define pgoff_to_pte(off) ((pte_t) { ((off) << 1) | _PAGE_FILE })
+#endif
typedef pte_t *pte_addr_t;
projects / ~andy / linux / blobdiff