#ifndef _PARISC_PGTABLE_H
#define _PARISC_PGTABLE_H
+#include <asm-generic/4level-fixup.h>
+
#include <linux/config.h>
#include <asm/fixmap.h>
*/
#include <linux/spinlock.h>
+#include <linux/mm.h> /* for vm_area_struct */
#include <asm/processor.h>
#include <asm/cache.h>
#include <asm/bitops.h>
do{ \
*(pteptr) = (pteval); \
} while(0)
+#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
#endif /* !__ASSEMBLY__ */
/* This is the size of the initially mapped kernel memory (i.e. currently
* 0 to 1<<23 == 8MB */
+#ifdef CONFIG_64BIT
+#define KERNEL_INITIAL_ORDER 24
+#else
#define KERNEL_INITIAL_ORDER 23
+#endif
#define KERNEL_INITIAL_SIZE (1 << KERNEL_INITIAL_ORDER)
-#ifdef __LP64__
+#ifdef CONFIG_64BIT
#define PT_NLEVELS 3
#define PGD_ORDER 1 /* Number of pages per pgd */
#define PMD_ORDER 1 /* Number of pages per pmd */
* pgd entries used up by user/kernel:
*/
-#define FIRST_USER_PGD_NR 0
+#define FIRST_USER_ADDRESS 0
#ifndef __ASSEMBLY__
extern void *vmalloc_start;
#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
#define _PAGE_KERNEL (_PAGE_PRESENT | _PAGE_EXEC | _PAGE_READ | _PAGE_WRITE | _PAGE_DIRTY | _PAGE_ACCESSED)
+/* The pgd/pmd contains a ptr (in phys addr space); since all pgds/pmds
+ * are page-aligned, we don't care about the PAGE_OFFSET bits, except
+ * for a few meta-information bits, so we shift the address to be
+ * able to effectively address 40-bits of physical address space. */
+#define _PxD_PRESENT_BIT 31
+#define _PxD_ATTACHED_BIT 30
+#define _PxD_VALID_BIT 29
+
+#define PxD_FLAG_PRESENT (1 << xlate_pabit(_PxD_PRESENT_BIT))
+#define PxD_FLAG_ATTACHED (1 << xlate_pabit(_PxD_ATTACHED_BIT))
+#define PxD_FLAG_VALID (1 << xlate_pabit(_PxD_VALID_BIT))
+#define PxD_FLAG_MASK (0xf)
+#define PxD_FLAG_SHIFT (4)
+#define PxD_VALUE_SHIFT (8)
+
#ifndef __ASSEMBLY__
#define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
#define PAGE_COPY PAGE_EXECREAD
#define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_EXEC |_PAGE_ACCESSED)
#define PAGE_KERNEL __pgprot(_PAGE_KERNEL)
-#define PAGE_KERNEL_RO __pgprot(_PAGE_PRESENT | _PAGE_EXEC | _PAGE_READ | _PAGE_DIRTY | _PAGE_ACCESSED)
+#define PAGE_KERNEL_RO __pgprot(_PAGE_KERNEL & ~_PAGE_WRITE)
#define PAGE_KERNEL_UNC __pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE)
#define PAGE_GATEWAY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_GATEWAY| _PAGE_READ)
#define PAGE_FLUSH __pgprot(_PAGE_FLUSH)
#define pte_none(x) ((pte_val(x) == 0) || (pte_val(x) & _PAGE_FLUSH))
#define pte_present(x) (pte_val(x) & _PAGE_PRESENT)
-#define pte_clear(xp) do { pte_val(*(xp)) = 0; } while (0)
+#define pte_clear(mm,addr,xp) do { pte_val(*(xp)) = 0; } while (0)
+
+#define pmd_flag(x) (pmd_val(x) & PxD_FLAG_MASK)
+#define pmd_address(x) ((unsigned long)(pmd_val(x) &~ PxD_FLAG_MASK) << PxD_VALUE_SHIFT)
+#define pgd_flag(x) (pgd_val(x) & PxD_FLAG_MASK)
+#define pgd_address(x) ((unsigned long)(pgd_val(x) &~ PxD_FLAG_MASK) << PxD_VALUE_SHIFT)
-#ifdef __LP64__
+#ifdef CONFIG_64BIT
/* The first entry of the permanent pmd is not there if it contains
* the gateway marker */
-#define pmd_none(x) (!pmd_val(x) || pmd_val(x) == _PAGE_GATEWAY)
-#define pmd_bad(x) ((pmd_val(x) & ~PAGE_MASK) != _PAGE_TABLE && (pmd_val(x) & ~PAGE_MASK) != (_PAGE_TABLE | _PAGE_GATEWAY))
+#define pmd_none(x) (!pmd_val(x) || pmd_flag(x) == PxD_FLAG_ATTACHED)
#else
#define pmd_none(x) (!pmd_val(x))
-#define pmd_bad(x) ((pmd_val(x) & ~PAGE_MASK) != _PAGE_TABLE)
#endif
-#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
+#define pmd_bad(x) (!(pmd_flag(x) & PxD_FLAG_VALID))
+#define pmd_present(x) (pmd_flag(x) & PxD_FLAG_PRESENT)
static inline void pmd_clear(pmd_t *pmd) {
-#ifdef __LP64__
- if(pmd_val(*pmd) & _PAGE_GATEWAY)
+#ifdef CONFIG_64BIT
+ if (pmd_flag(*pmd) & PxD_FLAG_ATTACHED)
/* This is the entry pointing to the permanent pmd
* attached to the pgd; cannot clear it */
- pmd_val(*pmd) = _PAGE_GATEWAY;
+ __pmd_val_set(*pmd, PxD_FLAG_ATTACHED);
else
#endif
- pmd_val(*pmd) = 0;
+ __pmd_val_set(*pmd, 0);
}
#if PT_NLEVELS == 3
-#define pgd_page(pgd) ((unsigned long) __va(pgd_val(pgd) & PAGE_MASK))
+#define pgd_page(pgd) ((unsigned long) __va(pgd_address(pgd)))
/* For 64 bit we have three level tables */
#define pgd_none(x) (!pgd_val(x))
-#ifdef __LP64__
-#define pgd_bad(x) ((pgd_val(x) & ~PAGE_MASK) != _PAGE_TABLE && (pgd_val(x) & ~PAGE_MASK) != (_PAGE_TABLE | _PAGE_GATEWAY))
-#else
-#define pgd_bad(x) ((pgd_val(x) & ~PAGE_MASK) != _PAGE_TABLE)
-#endif
-#define pgd_present(x) (pgd_val(x) & _PAGE_PRESENT)
+#define pgd_bad(x) (!(pgd_flag(x) & PxD_FLAG_VALID))
+#define pgd_present(x) (pgd_flag(x) & PxD_FLAG_PRESENT)
static inline void pgd_clear(pgd_t *pgd) {
-#ifdef __LP64__
- if(pgd_val(*pgd) & _PAGE_GATEWAY)
+#ifdef CONFIG_64BIT
+ if(pgd_flag(*pgd) & PxD_FLAG_ATTACHED)
/* This is the permanent pmd attached to the pgd; cannot
* free it */
return;
#endif
- pgd_val(*pgd) = 0;
+ __pgd_val_set(*pgd, 0);
}
#else
/*
#define pte_pfn(x) (pte_val(x) >> PAGE_SHIFT)
-#ifdef CONFIG_DISCONTIGMEM
-#define pte_page(x) (phys_to_page(pte_val(x)))
-#else
-#define pte_page(x) (mem_map+(pte_val(x) >> PAGE_SHIFT))
-#endif
+#define pte_page(pte) (pfn_to_page(pte_pfn(pte)))
-#define pmd_page_kernel(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
+#define pmd_page_kernel(pmd) ((unsigned long) __va(pmd_address(pmd)))
-#define __pmd_page(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
+#define __pmd_page(pmd) ((unsigned long) __va(pmd_address(pmd)))
#define pmd_page(pmd) virt_to_page((void *)__pmd_page(pmd))
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
#define PG_dcache_dirty PG_arch_1
-struct vm_area_struct; /* forward declaration (include/linux/mm.h) */
extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
/* Encode and de-code a swap entry */
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
-static inline int ptep_test_and_clear_young(pte_t *ptep)
+static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
{
#ifdef CONFIG_SMP
if (!pte_young(*ptep))
return 0;
- return test_and_clear_bit(xlate_pabit(_PAGE_ACCESSED_BIT), ptep);
+ return test_and_clear_bit(xlate_pabit(_PAGE_ACCESSED_BIT), &pte_val(*ptep));
#else
pte_t pte = *ptep;
if (!pte_young(pte))
return 0;
- set_pte(ptep, pte_mkold(pte));
+ set_pte_at(vma->vm_mm, addr, ptep, pte_mkold(pte));
return 1;
#endif
}
-static inline int ptep_test_and_clear_dirty(pte_t *ptep)
+static inline int ptep_test_and_clear_dirty(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
{
#ifdef CONFIG_SMP
if (!pte_dirty(*ptep))
return 0;
- return test_and_clear_bit(xlate_pabit(_PAGE_DIRTY_BIT), ptep);
+ return test_and_clear_bit(xlate_pabit(_PAGE_DIRTY_BIT), &pte_val(*ptep));
#else
pte_t pte = *ptep;
if (!pte_dirty(pte))
return 0;
- set_pte(ptep, pte_mkclean(pte));
+ set_pte_at(vma->vm_mm, addr, ptep, pte_mkclean(pte));
return 1;
#endif
}
-#ifdef CONFIG_SMP
extern spinlock_t pa_dbit_lock;
-#else
-static int pa_dbit_lock; /* dummy to keep the compilers happy */
-#endif
-static inline pte_t ptep_get_and_clear(pte_t *ptep)
+struct mm_struct;
+static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
pte_t old_pte;
pte_t pte;
pte = old_pte = *ptep;
pte_val(pte) &= ~_PAGE_PRESENT;
pte_val(pte) |= _PAGE_FLUSH;
- set_pte(ptep,pte);
+ set_pte_at(mm,addr,ptep,pte);
spin_unlock(&pa_dbit_lock);
return old_pte;
}
-static inline void ptep_set_wrprotect(pte_t *ptep)
+static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
#ifdef CONFIG_SMP
unsigned long new, old;
} while (cmpxchg((unsigned long *) ptep, old, new) != old);
#else
pte_t old_pte = *ptep;
- set_pte(ptep, pte_wrprotect(old_pte));
-#endif
-}
-
-static inline void ptep_mkdirty(pte_t *ptep)
-{
-#ifdef CONFIG_SMP
- set_bit(xlate_pabit(_PAGE_DIRTY_BIT), ptep);
-#else
- pte_t old_pte = *ptep;
- set_pte(ptep, pte_mkdirty(old_pte));
+ set_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
#endif
}
#endif /* !__ASSEMBLY__ */
-#define io_remap_page_range remap_page_range
+#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
+ remap_pfn_range(vma, vaddr, pfn, size, prot)
+
+#define pgprot_noncached(prot) __pgprot(pgprot_val(prot) | _PAGE_NO_CACHE)
+
+#define MK_IOSPACE_PFN(space, pfn) (pfn)
+#define GET_IOSPACE(pfn) 0
+#define GET_PFN(pfn) (pfn)
/* We provide our own get_unmapped_area to provide cache coherency */
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
#define __HAVE_ARCH_PTEP_SET_WRPROTECT
-#define __HAVE_ARCH_PTEP_MKDIRTY
#define __HAVE_ARCH_PTE_SAME
#include <asm-generic/pgtable.h>
git://git.onelab.eu / linux-2.6.git / blobdiff