#ifndef _ASM_PGTABLE_H
#define _ASM_PGTABLE_H
-#include <linux/config.h>
#ifdef CONFIG_32BIT
#include <asm/pgtable-32.h>
#endif
#define PAGE_NONE __pgprot(_PAGE_PRESENT | _CACHE_CACHABLE_NONCOHERENT)
#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
- PAGE_CACHABLE_DEFAULT)
+ _page_cachable_default)
#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_READ | \
- PAGE_CACHABLE_DEFAULT)
+ _page_cachable_default)
#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_READ | \
- PAGE_CACHABLE_DEFAULT)
+ _page_cachable_default)
#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
- _PAGE_GLOBAL | PAGE_CACHABLE_DEFAULT)
+ _PAGE_GLOBAL | _page_cachable_default)
#define PAGE_USERIO __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
- PAGE_CACHABLE_DEFAULT)
+ _page_cachable_default)
#define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \
__WRITEABLE | _PAGE_GLOBAL | _CACHE_UNCACHED)
* read. Also, write permissions imply read permissions. This is the closest
* we can get by reasonable means..
*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
+
+/*
+ * Dummy values to fill the table in mmap.c
+ * The real values will be generated at runtime
+ */
+#define __P000 __pgprot(0)
+#define __P001 __pgprot(0)
+#define __P010 __pgprot(0)
+#define __P011 __pgprot(0)
+#define __P100 __pgprot(0)
+#define __P101 __pgprot(0)
+#define __P110 __pgprot(0)
+#define __P111 __pgprot(0)
+
+#define __S000 __pgprot(0)
+#define __S001 __pgprot(0)
+#define __S010 __pgprot(0)
+#define __S011 __pgprot(0)
+#define __S100 __pgprot(0)
+#define __S101 __pgprot(0)
+#define __S110 __pgprot(0)
+#define __S111 __pgprot(0)
+
+extern unsigned long _page_cachable_default;
/*
* ZERO_PAGE is a global shared page that is always zero; used
extern unsigned long zero_page_mask;
#define ZERO_PAGE(vaddr) \
- (virt_to_page(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask)))
-
-#define __HAVE_ARCH_MOVE_PTE
-#define move_pte(pte, prot, old_addr, new_addr) \
-({ \
- pte_t newpte = (pte); \
- if (pte_present(pte) && pfn_valid(pte_pfn(pte)) && \
- pte_page(pte) == ZERO_PAGE(old_addr)) \
- newpte = mk_pte(ZERO_PAGE(new_addr), (prot)); \
- newpte; \
-})
+ (virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask))))
extern void paging_init(void);
* Conversion functions: convert a page and protection to a page entry,
* and a page entry and page directory to the page they refer to.
*/
-#define pmd_phys(pmd) (pmd_val(pmd) - PAGE_OFFSET)
+#define pmd_phys(pmd) virt_to_phys((void *)pmd_val(pmd))
#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
-#define pmd_page_kernel(pmd) pmd_val(pmd)
+#define pmd_page_vaddr(pmd) pmd_val(pmd)
-#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1)
+#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32)
#define pte_none(pte) (!(((pte).pte_low | (pte).pte_high) & ~_PAGE_GLOBAL))
#define pte_present(pte) ((pte).pte_low & _PAGE_PRESENT)
}
}
}
-#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
+#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
}
#endif
}
-#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
+#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
#define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
#endif
-#define PGD_T_LOG2 ffz(~sizeof(pgd_t))
-#define PMD_T_LOG2 ffz(~sizeof(pmd_t))
-#define PTE_T_LOG2 ffz(~sizeof(pte_t))
+#define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1)
+#define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1)
+#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1)
-extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
+/*
+ * We used to declare this array with size but gcc 3.3 and older are not able
+ * to find that this expression is a constant, so the size is dropped.
+ */
+extern pgd_t swapper_pg_dir[];
/*
* The following only work if pte_present() is true.
* Undefined behaviour if not..
*/
-static inline int pte_user(pte_t pte) { BUG(); return 0; }
-#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1)
-static inline int pte_read(pte_t pte) { return pte.pte_low & _PAGE_READ; }
+#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32)
static inline int pte_write(pte_t pte) { return pte.pte_low & _PAGE_WRITE; }
static inline int pte_dirty(pte_t pte) { return pte.pte_low & _PAGE_MODIFIED; }
static inline int pte_young(pte_t pte) { return pte.pte_low & _PAGE_ACCESSED; }
return pte;
}
-static inline pte_t pte_rdprotect(pte_t pte)
-{
- pte.pte_low &= ~(_PAGE_READ | _PAGE_SILENT_READ);
- pte.pte_high &= ~_PAGE_SILENT_READ;
- return pte;
-}
-
static inline pte_t pte_mkclean(pte_t pte)
{
pte.pte_low &= ~(_PAGE_MODIFIED | _PAGE_SILENT_WRITE);
return pte;
}
-static inline pte_t pte_mkread(pte_t pte)
-{
- pte.pte_low |= _PAGE_READ;
- if (pte.pte_low & _PAGE_ACCESSED) {
- pte.pte_low |= _PAGE_SILENT_READ;
- pte.pte_high |= _PAGE_SILENT_READ;
- }
- return pte;
-}
-
static inline pte_t pte_mkdirty(pte_t pte)
{
pte.pte_low |= _PAGE_MODIFIED;
return pte;
}
#else
-static inline int pte_read(pte_t pte) { return pte_val(pte) & _PAGE_READ; }
static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; }
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_MODIFIED; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
return pte;
}
-static inline pte_t pte_rdprotect(pte_t pte)
-{
- pte_val(pte) &= ~(_PAGE_READ | _PAGE_SILENT_READ);
- return pte;
-}
-
static inline pte_t pte_mkclean(pte_t pte)
{
pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE);
return pte;
}
-static inline pte_t pte_mkread(pte_t pte)
-{
- pte_val(pte) |= _PAGE_READ;
- if (pte_val(pte) & _PAGE_ACCESSED)
- pte_val(pte) |= _PAGE_SILENT_READ;
- return pte;
-}
-
static inline pte_t pte_mkdirty(pte_t pte)
{
pte_val(pte) |= _PAGE_MODIFIED;
*/
#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
-#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1)
+#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32)
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
pte.pte_low &= _PAGE_CHG_MASK;
remap_pfn_range(vma, vaddr, pfn, size, prot)
#endif
-#define MK_IOSPACE_PFN(space, pfn) (pfn)
-#define GET_IOSPACE(pfn) 0
-#define GET_PFN(pfn) (pfn)
-
#include <asm-generic/pgtable.h>
/*
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff