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-rw-r--r--include/asm-sh/pgtable_64.h314
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diff --git a/include/asm-sh/pgtable_64.h b/include/asm-sh/pgtable_64.h
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--- a/include/asm-sh/pgtable_64.h
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@@ -1,314 +0,0 @@
-#ifndef __ASM_SH_PGTABLE_64_H
-#define __ASM_SH_PGTABLE_64_H
-
-/*
- * include/asm-sh/pgtable_64.h
- *
- * This file contains the functions and defines necessary to modify and use
- * the SuperH page table tree.
- *
- * Copyright (C) 2000, 2001 Paolo Alberelli
- * Copyright (C) 2003, 2004 Paul Mundt
- * Copyright (C) 2003, 2004 Richard Curnow
- *
- * 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 archive
- * for more details.
- */
-#include <linux/threads.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-
-/*
- * Error outputs.
- */
-#define pte_ERROR(e) \
- printk("%s:%d: bad pte %016Lx.\n", __FILE__, __LINE__, pte_val(e))
-#define pgd_ERROR(e) \
- printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
-
-/*
- * Table setting routines. Used within arch/mm only.
- */
-#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
-
-static __inline__ void set_pte(pte_t *pteptr, pte_t pteval)
-{
- unsigned long long x = ((unsigned long long) pteval.pte_low);
- unsigned long long *xp = (unsigned long long *) pteptr;
- /*
- * Sign-extend based on NPHYS.
- */
- *(xp) = (x & NPHYS_SIGN) ? (x | NPHYS_MASK) : x;
-}
-#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
-
-static __inline__ void pmd_set(pmd_t *pmdp,pte_t *ptep)
-{
- pmd_val(*pmdp) = (unsigned long) ptep;
-}
-
-/*
- * PGD defines. Top level.
- */
-
-/* To find an entry in a generic PGD. */
-#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
-#define __pgd_offset(address) pgd_index(address)
-#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
-
-/* To find an entry in a kernel PGD. */
-#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-
-/*
- * PMD level access routines. Same notes as above.
- */
-#define _PMD_EMPTY 0x0
-/* Either the PMD is empty or present, it's not paged out */
-#define pmd_present(pmd_entry) (pmd_val(pmd_entry) & _PAGE_PRESENT)
-#define pmd_clear(pmd_entry_p) (set_pmd((pmd_entry_p), __pmd(_PMD_EMPTY)))
-#define pmd_none(pmd_entry) (pmd_val((pmd_entry)) == _PMD_EMPTY)
-#define pmd_bad(pmd_entry) ((pmd_val(pmd_entry) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
-
-#define pmd_page_vaddr(pmd_entry) \
- ((unsigned long) __va(pmd_val(pmd_entry) & PAGE_MASK))
-
-#define pmd_page(pmd) \
- (virt_to_page(pmd_val(pmd)))
-
-/* PMD to PTE dereferencing */
-#define pte_index(address) \
- ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
-
-#define pte_offset_kernel(dir, addr) \
- ((pte_t *) ((pmd_val(*(dir))) & PAGE_MASK) + pte_index((addr)))
-
-#define pte_offset_map(dir,addr) pte_offset_kernel(dir, addr)
-#define pte_offset_map_nested(dir,addr) pte_offset_kernel(dir, addr)
-#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
-
-#ifndef __ASSEMBLY__
-#define IOBASE_VADDR 0xff000000
-#define IOBASE_END 0xffffffff
-
-/*
- * PTEL coherent flags.
- * See Chapter 17 ST50 CPU Core Volume 1, Architecture.
- */
-/* The bits that are required in the SH-5 TLB are placed in the h/w-defined
- positions, to avoid expensive bit shuffling on every refill. The remaining
- bits are used for s/w purposes and masked out on each refill.
-
- Note, the PTE slots are used to hold data of type swp_entry_t when a page is
- swapped out. Only the _PAGE_PRESENT flag is significant when the page is
- swapped out, and it must be placed so that it doesn't overlap either the
- type or offset fields of swp_entry_t. For x86, offset is at [31:8] and type
- at [6:1], with _PAGE_PRESENT at bit 0 for both pte_t and swp_entry_t. This
- scheme doesn't map to SH-5 because bit [0] controls cacheability. So bit
- [2] is used for _PAGE_PRESENT and the type field of swp_entry_t is split
- into 2 pieces. That is handled by SWP_ENTRY and SWP_TYPE below. */
-#define _PAGE_WT 0x001 /* CB0: if cacheable, 1->write-thru, 0->write-back */
-#define _PAGE_DEVICE 0x001 /* CB0: if uncacheable, 1->device (i.e. no write-combining or reordering at bus level) */
-#define _PAGE_CACHABLE 0x002 /* CB1: uncachable/cachable */
-#define _PAGE_PRESENT 0x004 /* software: page referenced */
-#define _PAGE_FILE 0x004 /* software: only when !present */
-#define _PAGE_SIZE0 0x008 /* SZ0-bit : size of page */
-#define _PAGE_SIZE1 0x010 /* SZ1-bit : size of page */
-#define _PAGE_SHARED 0x020 /* software: reflects PTEH's SH */
-#define _PAGE_READ 0x040 /* PR0-bit : read access allowed */
-#define _PAGE_EXECUTE 0x080 /* PR1-bit : execute access allowed */
-#define _PAGE_WRITE 0x100 /* PR2-bit : write access allowed */
-#define _PAGE_USER 0x200 /* PR3-bit : user space access allowed */
-#define _PAGE_DIRTY 0x400 /* software: page accessed in write */
-#define _PAGE_ACCESSED 0x800 /* software: page referenced */
-
-/* Mask which drops software flags */
-#define _PAGE_FLAGS_HARDWARE_MASK 0xfffffffffffff3dbLL
-
-/*
- * HugeTLB support
- */
-#if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
-#define _PAGE_SZHUGE (_PAGE_SIZE0)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
-#define _PAGE_SZHUGE (_PAGE_SIZE1)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512MB)
-#define _PAGE_SZHUGE (_PAGE_SIZE0 | _PAGE_SIZE1)
-#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 (0)
-#endif
-
-/*
- * Default flags for a Kernel page.
- * This is fundametally also SHARED because the main use of this define
- * (other than for PGD/PMD entries) is for the VMALLOC pool which is
- * contextless.
- *
- * _PAGE_EXECUTE is required for modules
- *
- */
-#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
- _PAGE_EXECUTE | \
- _PAGE_CACHABLE | _PAGE_ACCESSED | _PAGE_DIRTY | \
- _PAGE_SHARED)
-
-/* Default flags for a User page */
-#define _PAGE_TABLE (_KERNPG_TABLE | _PAGE_USER)
-
-#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
-
-/*
- * We have full permissions (Read/Write/Execute/Shared).
- */
-#define _PAGE_COMMON (_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_CACHABLE | _PAGE_ACCESSED)
-
-#define PAGE_NONE __pgprot(_PAGE_CACHABLE | _PAGE_ACCESSED)
-#define PAGE_SHARED __pgprot(_PAGE_COMMON | _PAGE_READ | _PAGE_WRITE | \
- _PAGE_SHARED)
-#define PAGE_EXECREAD __pgprot(_PAGE_COMMON | _PAGE_READ | _PAGE_EXECUTE)
-
-/*
- * We need to include PAGE_EXECUTE in PAGE_COPY because it is the default
- * protection mode for the stack.
- */
-#define PAGE_COPY PAGE_EXECREAD
-
-#define PAGE_READONLY __pgprot(_PAGE_COMMON | _PAGE_READ)
-#define PAGE_WRITEONLY __pgprot(_PAGE_COMMON | _PAGE_WRITE)
-#define PAGE_RWX __pgprot(_PAGE_COMMON | _PAGE_READ | \
- _PAGE_WRITE | _PAGE_EXECUTE)
-#define PAGE_KERNEL __pgprot(_KERNPG_TABLE)
-
-#define PAGE_KERNEL_NOCACHE \
- __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
- _PAGE_EXECUTE | _PAGE_ACCESSED | \
- _PAGE_DIRTY | _PAGE_SHARED)
-
-/* Make it a device mapping for maximum safety (e.g. for mapping device
- registers into user-space via /dev/map). */
-#define pgprot_noncached(x) __pgprot(((x).pgprot & ~(_PAGE_CACHABLE)) | _PAGE_DEVICE)
-#define pgprot_writecombine(prot) __pgprot(pgprot_val(prot) & ~_PAGE_CACHABLE)
-
-/*
- * Handling allocation failures during page table setup.
- */
-extern void __handle_bad_pmd_kernel(pmd_t * pmd);
-#define __handle_bad_pmd(x) __handle_bad_pmd_kernel(x)
-
-/*
- * PTE level access routines.
- *
- * Note1:
- * It's the tree walk leaf. This is physical address to be stored.
- *
- * Note 2:
- * Regarding the choice of _PTE_EMPTY:
-
- We must choose a bit pattern that cannot be valid, whether or not the page
- is present. bit[2]==1 => present, bit[2]==0 => swapped out. If swapped
- out, bits [31:8], [6:3], [1:0] are under swapper control, so only bit[7] is
- left for us to select. If we force bit[7]==0 when swapped out, we could use
- the combination bit[7,2]=2'b10 to indicate an empty PTE. Alternatively, if
- we force bit[7]==1 when swapped out, we can use all zeroes to indicate
- empty. This is convenient, because the page tables get cleared to zero
- when they are allocated.
-
- */
-#define _PTE_EMPTY 0x0
-#define pte_present(x) (pte_val(x) & _PAGE_PRESENT)
-#define pte_clear(mm,addr,xp) (set_pte_at(mm, addr, xp, __pte(_PTE_EMPTY)))
-#define pte_none(x) (pte_val(x) == _PTE_EMPTY)
-
-/*
- * Some definitions to translate between mem_map, PTEs, and page
- * addresses:
- */
-
-/*
- * Given a PTE, return the index of the mem_map[] entry corresponding
- * to the page frame the PTE. Get the absolute physical address, make
- * a relative physical address and translate it to an index.
- */
-#define pte_pagenr(x) (((unsigned long) (pte_val(x)) - \
- __MEMORY_START) >> PAGE_SHIFT)
-
-/*
- * Given a PTE, return the "struct page *".
- */
-#define pte_page(x) (mem_map + pte_pagenr(x))
-
-/*
- * Return number of (down rounded) MB corresponding to x pages.
- */
-#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
-
-
-/*
- * The following have defined behavior only work if pte_present() is true.
- */
-static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
-static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; }
-static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; }
-static inline int pte_special(pte_t pte){ return 0; }
-
-static inline pte_t pte_wrprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_WRITE)); return pte; }
-static inline pte_t pte_mkclean(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_DIRTY)); return pte; }
-static inline pte_t pte_mkold(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_ACCESSED)); return pte; }
-static inline pte_t pte_mkwrite(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_WRITE)); return pte; }
-static inline pte_t pte_mkdirty(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_DIRTY)); return pte; }
-static inline pte_t pte_mkyoung(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_ACCESSED)); return pte; }
-static inline pte_t pte_mkhuge(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_SZHUGE)); return pte; }
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
-
-
-/*
- * Conversion functions: convert a page and protection to a page entry.
- *
- * extern pte_t mk_pte(struct page *page, pgprot_t pgprot)
- */
-#define mk_pte(page,pgprot) \
-({ \
- pte_t __pte; \
- \
- set_pte(&__pte, __pte((((page)-mem_map) << PAGE_SHIFT) | \
- __MEMORY_START | pgprot_val((pgprot)))); \
- __pte; \
-})
-
-/*
- * This takes a (absolute) physical page address that is used
- * by the remapping functions
- */
-#define mk_pte_phys(physpage, pgprot) \
-({ pte_t __pte; set_pte(&__pte, __pte(physpage | pgprot_val(pgprot))); __pte; })
-
-static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
-{ set_pte(&pte, __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot))); return pte; }
-
-/* Encode and decode a swap entry */
-#define __swp_type(x) (((x).val & 3) + (((x).val >> 1) & 0x3c))
-#define __swp_offset(x) ((x).val >> 8)
-#define __swp_entry(type, offset) ((swp_entry_t) { ((offset << 8) + ((type & 0x3c) << 1) + (type & 3)) })
-#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
-#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
-
-/* Encode and decode a nonlinear file mapping entry */
-#define PTE_FILE_MAX_BITS 29
-#define pte_to_pgoff(pte) (pte_val(pte))
-#define pgoff_to_pte(off) ((pte_t) { (off) | _PAGE_FILE })
-
-#endif /* !__ASSEMBLY__ */
-
-#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
-#define pfn_pmd(pfn, prot) __pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
-
-#endif /* __ASM_SH_PGTABLE_64_H */