* use the SuperH page table tree.
*
* Copyright (C) 1999 Niibe Yutaka
- * Copyright (C) 2002 - 2005 Paul Mundt
+ * Copyright (C) 2002 - 2007 Paul Mundt
*
* 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
#endif /* !__ASSEMBLY__ */
/*
+ * Effective and physical address definitions, to aid with sign
+ * extension.
+ */
+#define NEFF 32
+#define NEFF_SIGN (1LL << (NEFF - 1))
+#define NEFF_MASK (-1LL << NEFF)
+
+#ifdef CONFIG_29BIT
+#define NPHYS 29
+#else
+#define NPHYS 32
+#endif
+
+#define NPHYS_SIGN (1LL << (NPHYS - 1))
+#define NPHYS_MASK (-1LL << NPHYS)
+
+/*
* traditional two-level paging structure
*/
/* PTE bits */
-#ifdef CONFIG_X2TLB
+#if defined(CONFIG_X2TLB) || defined(CONFIG_SUPERH64)
# define PTE_MAGNITUDE 3 /* 64-bit PTEs on extended mode SH-X2 TLB */
#else
# define PTE_MAGNITUDE 2 /* 32-bit PTEs */
#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0
-#define PTE_PHYS_MASK (0x20000000 - PAGE_SIZE)
-
-#define VMALLOC_START (P3SEG)
-#define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
-
-/*
- * Linux PTEL encoding.
- *
- * Hardware and software bit definitions for the PTEL value (see below for
- * notes on SH-X2 MMUs and 64-bit PTEs):
- *
- * - Bits 0 and 7 are reserved on SH-3 (_PAGE_WT and _PAGE_SZ1 on SH-4).
- *
- * - Bit 1 is the SH-bit, but is unused on SH-3 due to an MMU bug (the
- * hardware PTEL value can't have the SH-bit set when MMUCR.IX is set,
- * which is the default in cpu-sh3/mmu_context.h:MMU_CONTROL_INIT).
- *
- * In order to keep this relatively clean, do not use these for defining
- * SH-3 specific flags until all of the other unused bits have been
- * exhausted.
- *
- * - Bit 9 is reserved by everyone and used by _PAGE_PROTNONE.
- *
- * - Bits 10 and 11 are low bits of the PPN that are reserved on >= 4K pages.
- * Bit 10 is used for _PAGE_ACCESSED, bit 11 remains unused.
- *
- * - Bits 31, 30, and 29 remain unused by everyone and can be used for future
- * software flags, although care must be taken to update _PAGE_CLEAR_FLAGS.
- *
- * XXX: Leave the _PAGE_FILE and _PAGE_WT overhaul for a rainy day.
- *
- * SH-X2 MMUs and extended PTEs
- *
- * SH-X2 supports an extended mode TLB with split data arrays due to the
- * number of bits needed for PR and SZ (now EPR and ESZ) encodings. The PR and
- * SZ bit placeholders still exist in data array 1, but are implemented as
- * reserved bits, with the real logic existing in data array 2.
- *
- * The downside to this is that we can no longer fit everything in to a 32-bit
- * PTE encoding, so a 64-bit pte_t is necessary for these parts. On the plus
- * side, this gives us quite a few spare bits to play with for future usage.
- */
-/* Legacy and compat mode bits */
-#define _PAGE_WT 0x001 /* WT-bit on SH-4, 0 on SH-3 */
-#define _PAGE_HW_SHARED 0x002 /* SH-bit : shared among processes */
-#define _PAGE_DIRTY 0x004 /* D-bit : page changed */
-#define _PAGE_CACHABLE 0x008 /* C-bit : cachable */
-#define _PAGE_SZ0 0x010 /* SZ0-bit : Size of page */
-#define _PAGE_RW 0x020 /* PR0-bit : write access allowed */
-#define _PAGE_USER 0x040 /* PR1-bit : user space access allowed*/
-#define _PAGE_SZ1 0x080 /* SZ1-bit : Size of page (on SH-4) */
-#define _PAGE_PRESENT 0x100 /* V-bit : page is valid */
-#define _PAGE_PROTNONE 0x200 /* software: if not present */
-#define _PAGE_ACCESSED 0x400 /* software: page referenced */
-#define _PAGE_FILE _PAGE_WT /* software: pagecache or swap? */
-
-#define _PAGE_SZ_MASK (_PAGE_SZ0 | _PAGE_SZ1)
-#define _PAGE_PR_MASK (_PAGE_RW | _PAGE_USER)
-
-/* Extended mode bits */
-#define _PAGE_EXT_ESZ0 0x0010 /* ESZ0-bit: Size of page */
-#define _PAGE_EXT_ESZ1 0x0020 /* ESZ1-bit: Size of page */
-#define _PAGE_EXT_ESZ2 0x0040 /* ESZ2-bit: Size of page */
-#define _PAGE_EXT_ESZ3 0x0080 /* ESZ3-bit: Size of page */
-
-#define _PAGE_EXT_USER_EXEC 0x0100 /* EPR0-bit: User space executable */
-#define _PAGE_EXT_USER_WRITE 0x0200 /* EPR1-bit: User space writable */
-#define _PAGE_EXT_USER_READ 0x0400 /* EPR2-bit: User space readable */
-
-#define _PAGE_EXT_KERN_EXEC 0x0800 /* EPR3-bit: Kernel space executable */
-#define _PAGE_EXT_KERN_WRITE 0x1000 /* EPR4-bit: Kernel space writable */
-#define _PAGE_EXT_KERN_READ 0x2000 /* EPR5-bit: Kernel space readable */
-
-/* Wrapper for extended mode pgprot twiddling */
-#define _PAGE_EXT(x) ((unsigned long long)(x) << 32)
-
-/* software: moves to PTEA.TC (Timing Control) */
-#define _PAGE_PCC_AREA5 0x00000000 /* use BSC registers for area5 */
-#define _PAGE_PCC_AREA6 0x80000000 /* use BSC registers for area6 */
-
-/* software: moves to PTEA.SA[2:0] (Space Attributes) */
-#define _PAGE_PCC_IODYN 0x00000001 /* IO space, dynamically sized bus */
-#define _PAGE_PCC_IO8 0x20000000 /* IO space, 8 bit bus */
-#define _PAGE_PCC_IO16 0x20000001 /* IO space, 16 bit bus */
-#define _PAGE_PCC_COM8 0x40000000 /* Common Memory space, 8 bit bus */
-#define _PAGE_PCC_COM16 0x40000001 /* Common Memory space, 16 bit bus */
-#define _PAGE_PCC_ATR8 0x60000000 /* Attribute Memory space, 8 bit bus */
-#define _PAGE_PCC_ATR16 0x60000001 /* Attribute Memory space, 6 bit bus */
-
-/* Mask which drops unused bits from the PTEL value */
-#if defined(CONFIG_CPU_SH3)
-#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED| \
- _PAGE_FILE | _PAGE_SZ1 | \
- _PAGE_HW_SHARED)
-#elif defined(CONFIG_X2TLB)
-/* Get rid of the legacy PR/SZ bits when using extended mode */
-#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED | \
- _PAGE_FILE | _PAGE_PR_MASK | _PAGE_SZ_MASK)
+#ifdef CONFIG_32BIT
+#define PHYS_ADDR_MASK 0xffffffff
#else
-#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED | _PAGE_FILE)
+#define PHYS_ADDR_MASK 0x1fffffff
#endif
-#define _PAGE_FLAGS_HARDWARE_MASK (0x1fffffff & ~(_PAGE_CLEAR_FLAGS))
+#define PTE_PHYS_MASK (PHYS_ADDR_MASK & PAGE_MASK)
-/* Hardware flags, page size encoding */
-#if defined(CONFIG_X2TLB)
-# if defined(CONFIG_PAGE_SIZE_4KB)
-# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ0)
-# elif defined(CONFIG_PAGE_SIZE_8KB)
-# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ1)
-# elif defined(CONFIG_PAGE_SIZE_64KB)
-# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ2)
-# endif
+#ifdef CONFIG_SUPERH32
+#define VMALLOC_START (P3SEG)
#else
-# if defined(CONFIG_PAGE_SIZE_4KB)
-# define _PAGE_FLAGS_HARD _PAGE_SZ0
-# elif defined(CONFIG_PAGE_SIZE_64KB)
-# define _PAGE_FLAGS_HARD _PAGE_SZ1
-# endif
+#define VMALLOC_START (0xf0000000)
#endif
+#define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
-#if defined(CONFIG_X2TLB)
-# if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
-# define _PAGE_SZHUGE (_PAGE_EXT_ESZ2)
-# elif defined(CONFIG_HUGETLB_PAGE_SIZE_256K)
-# define _PAGE_SZHUGE (_PAGE_EXT_ESZ0 | _PAGE_EXT_ESZ2)
-# elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
-# define _PAGE_SZHUGE (_PAGE_EXT_ESZ0 | _PAGE_EXT_ESZ1 | _PAGE_EXT_ESZ2)
-# elif defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
-# define _PAGE_SZHUGE (_PAGE_EXT_ESZ3)
-# elif defined(CONFIG_HUGETLB_PAGE_SIZE_64MB)
-# define _PAGE_SZHUGE (_PAGE_EXT_ESZ2 | _PAGE_EXT_ESZ3)
-# endif
+#if defined(CONFIG_SUPERH32)
+#include <asm/pgtable_32.h>
#else
-# if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
-# define _PAGE_SZHUGE (_PAGE_SZ1)
-# elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
-# define _PAGE_SZHUGE (_PAGE_SZ0 | _PAGE_SZ1)
-# 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_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_KERN_READ | \
- _PAGE_EXT_KERN_WRITE | \
- _PAGE_EXT_USER_READ | \
- _PAGE_EXT_USER_WRITE))
-
-#define PAGE_EXECREAD __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
- _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
- _PAGE_EXT(_PAGE_EXT_KERN_EXEC | \
- _PAGE_EXT_KERN_READ | \
- _PAGE_EXT_USER_EXEC | \
- _PAGE_EXT_USER_READ))
-
-#define PAGE_COPY PAGE_EXECREAD
-
-#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
- _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
- _PAGE_EXT(_PAGE_EXT_KERN_READ | \
- _PAGE_EXT_USER_READ))
-
-#define PAGE_WRITEONLY __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
- _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
- _PAGE_EXT(_PAGE_EXT_KERN_WRITE | \
- _PAGE_EXT_USER_WRITE))
-
-#define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
- _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
- _PAGE_EXT(_PAGE_EXT_KERN_WRITE | \
- _PAGE_EXT_KERN_READ | \
- _PAGE_EXT_KERN_EXEC | \
- _PAGE_EXT_USER_WRITE | \
- _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_EXEC))
-
-#define PAGE_KERNEL_NOCACHE \
- __pgprot(_PAGE_PRESENT | _PAGE_DIRTY | \
- _PAGE_ACCESSED | _PAGE_HW_SHARED | \
- _PAGE_FLAGS_HARD | \
- _PAGE_EXT(_PAGE_EXT_KERN_READ | \
- _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))
-
-#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_EXEC) \
- (slot ? _PAGE_PCC_AREA5 : _PAGE_PCC_AREA6) | \
- (type))
-
-#elif defined(CONFIG_MMU) /* SH-X TLB */
-#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_CACHABLE | \
- _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
-
-#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
- _PAGE_CACHABLE | _PAGE_ACCESSED | \
- _PAGE_FLAGS_HARD)
-
-#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_CACHABLE | \
- _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
-
-#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_CACHABLE | \
- _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
-
-#define PAGE_EXECREAD PAGE_READONLY
-#define PAGE_RWX PAGE_SHARED
-#define PAGE_WRITEONLY PAGE_SHARED
-
-#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_CACHABLE | \
- _PAGE_DIRTY | _PAGE_ACCESSED | \
- _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
-
-#define PAGE_KERNEL_NOCACHE \
- __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | \
- _PAGE_ACCESSED | _PAGE_HW_SHARED | \
- _PAGE_FLAGS_HARD)
-
-#define PAGE_KERNEL_RO __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
- _PAGE_DIRTY | _PAGE_ACCESSED | \
- _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
-
-#define PAGE_KERNEL_PCC(slot, type) \
- __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | \
- _PAGE_ACCESSED | _PAGE_FLAGS_HARD | \
- (slot ? _PAGE_PCC_AREA5 : _PAGE_PCC_AREA6) | \
- (type))
-#else /* no mmu */
-#define PAGE_NONE __pgprot(0)
-#define PAGE_SHARED __pgprot(0)
-#define PAGE_COPY __pgprot(0)
-#define PAGE_EXECREAD __pgprot(0)
-#define PAGE_RWX __pgprot(0)
-#define PAGE_READONLY __pgprot(0)
-#define PAGE_WRITEONLY __pgprot(0)
-#define PAGE_KERNEL __pgprot(0)
-#define PAGE_KERNEL_NOCACHE __pgprot(0)
-#define PAGE_KERNEL_RO __pgprot(0)
-
-#define PAGE_KERNEL_PCC(slot, type) \
- __pgprot(0)
+#include <asm/pgtable_64.h>
#endif
-#endif /* __ASSEMBLY__ */
-
/*
* SH-X and lower (legacy) SuperH parts (SH-3, SH-4, some SH-4A) can't do page
* protection for execute, and considers it the same as a read. Also, write
#define __S110 PAGE_RWX
#define __S111 PAGE_RWX
-#ifndef __ASSEMBLY__
-
-/*
- * Certain architectures need to do special things when PTEs
- * within a page table are directly modified. Thus, the following
- * hook is made available.
- */
-#ifdef CONFIG_X2TLB
-static inline void set_pte(pte_t *ptep, pte_t pte)
-{
- ptep->pte_high = pte.pte_high;
- smp_wmb();
- ptep->pte_low = pte.pte_low;
-}
-#else
-#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
-#endif
-
-#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
-
-/*
- * (pmds are folded into pgds so this doesn't get actually called,
- * but the define is needed for a generic inline function.)
- */
-#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
-
-#define pte_pfn(x) ((unsigned long)(((x).pte_low >> PAGE_SHIFT)))
-
-#define pfn_pte(pfn, prot) \
- __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
-#define pfn_pmd(pfn, prot) \
- __pmd(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
-
-#define pte_none(x) (!pte_val(x))
-#define pte_present(x) ((x).pte_low & (_PAGE_PRESENT | _PAGE_PROTNONE))
-
-#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))
-#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
-#define pmd_bad(x) (pmd_val(x) & ~PAGE_MASK)
-
-#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
-#define pte_page(x) pfn_to_page(pte_pfn(x))
-
-/*
- * The following only work if pte_present() is true.
- * Undefined behaviour if not..
- */
-#define pte_not_present(pte) (!((pte).pte_low & _PAGE_PRESENT))
-#define pte_dirty(pte) ((pte).pte_low & _PAGE_DIRTY)
-#define pte_young(pte) ((pte).pte_low & _PAGE_ACCESSED)
-#define pte_file(pte) ((pte).pte_low & _PAGE_FILE)
-
-#ifdef CONFIG_X2TLB
-#define pte_write(pte) ((pte).pte_high & _PAGE_EXT_USER_WRITE)
-#else
-#define pte_write(pte) ((pte).pte_low & _PAGE_RW)
-#endif
-
-#define PTE_BIT_FUNC(h,fn,op) \
-static inline pte_t pte_##fn(pte_t pte) { pte.pte_##h op; return pte; }
-
-#ifdef CONFIG_X2TLB
-/*
- * We cheat a bit in the SH-X2 TLB case. As the permission bits are
- * individually toggled (and user permissions are entirely decoupled from
- * kernel permissions), we attempt to couple them a bit more sanely here.
- */
-PTE_BIT_FUNC(high, wrprotect, &= ~_PAGE_EXT_USER_WRITE);
-PTE_BIT_FUNC(high, mkwrite, |= _PAGE_EXT_USER_WRITE | _PAGE_EXT_KERN_WRITE);
-PTE_BIT_FUNC(high, mkhuge, |= _PAGE_SZHUGE);
-#else
-PTE_BIT_FUNC(low, wrprotect, &= ~_PAGE_RW);
-PTE_BIT_FUNC(low, mkwrite, |= _PAGE_RW);
-PTE_BIT_FUNC(low, mkhuge, |= _PAGE_SZHUGE);
-#endif
-
-PTE_BIT_FUNC(low, mkclean, &= ~_PAGE_DIRTY);
-PTE_BIT_FUNC(low, mkdirty, |= _PAGE_DIRTY);
-PTE_BIT_FUNC(low, mkold, &= ~_PAGE_ACCESSED);
-PTE_BIT_FUNC(low, mkyoung, |= _PAGE_ACCESSED);
-
-/*
- * Macro and implementation to make a page protection as uncachable.
- */
-#define pgprot_writecombine(prot) \
- __pgprot(pgprot_val(prot) & ~_PAGE_CACHABLE)
-
-#define pgprot_noncached pgprot_writecombine
-
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- *
- * extern pte_t mk_pte(struct page *page, pgprot_t pgprot)
- */
-#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
-
-static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
-{
- pte.pte_low &= _PAGE_CHG_MASK;
- pte.pte_low |= pgprot_val(newprot);
-
-#ifdef CONFIG_X2TLB
- pte.pte_high |= pgprot_val(newprot) >> 32;
-#endif
-
- return pte;
-}
-
-#define pmd_page_vaddr(pmd) ((unsigned long)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))
-#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
-
-/* to find an entry in a kernel page-table-directory */
-#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-
-/* Find an entry in the third-level page table.. */
-#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
-#define pte_offset_kernel(dir, address) \
- ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
-#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
-#define pte_offset_map_nested(dir, address) pte_offset_kernel(dir, address)
-
-#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
-
-#ifdef CONFIG_X2TLB
-#define pte_ERROR(e) \
- printk("%s:%d: bad pte %p(%08lx%08lx).\n", __FILE__, __LINE__, \
- &(e), (e).pte_high, (e).pte_low)
-#define pgd_ERROR(e) \
- printk("%s:%d: bad pgd %016llx.\n", __FILE__, __LINE__, pgd_val(e))
-#else
-#define pte_ERROR(e) \
- printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
-#define pgd_ERROR(e) \
- printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
-#endif
-
-struct vm_area_struct;
-extern void update_mmu_cache(struct vm_area_struct * vma,
- unsigned long address, pte_t pte);
-
-/*
- * 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
- */
-#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;
#define kern_addr_valid(addr) (1)
#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
remap_pfn_range(vma, vaddr, pfn, size, prot)
-struct mm_struct;
+#define pte_pfn(x) ((unsigned long)(((x).pte_low >> PAGE_SHIFT)))
/*
* No page table caches to initialise
*/
#define pgtable_cache_init() do { } while (0)
-#ifndef CONFIG_MMU
-extern unsigned int kobjsize(const void *objp);
-#endif /* !CONFIG_MMU */
-
#if !defined(CONFIG_CACHE_OFF) && (defined(CONFIG_CPU_SH4) || \
defined(CONFIG_SH7705_CACHE_32KB))
+struct mm_struct;
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-extern pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
+pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
#endif
+struct vm_area_struct;
+extern void update_mmu_cache(struct vm_area_struct * vma,
+ unsigned long address, pte_t pte);
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
extern void paging_init(void);
+extern void page_table_range_init(unsigned long start, unsigned long end,
+ pgd_t *pgd);
#include <asm-generic/pgtable.h>
-#endif /* !__ASSEMBLY__ */
-#endif /* __ASM_SH_PAGE_H */
+#endif /* __ASM_SH_PGTABLE_H */
projects / linux-flexiantxendom0-3.2.10.git / blobdiff