diff options
Diffstat (limited to 'target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_pgtable.h')
| -rw-r--r-- | target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_pgtable.h | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_pgtable.h b/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_pgtable.h deleted file mode 100644 index 65668381d..000000000 --- a/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_pgtable.h +++ /dev/null @@ -1,360 +0,0 @@ -/* - * Copyright 2007-2009 Freescale Semiconductor, Inc. All Rights Reserved. - */ - -#ifndef _CF_PGTABLE_H -#define _CF_PGTABLE_H - -#include <asm/cfmmu.h> -#include <asm/page.h> - -#ifndef __ASSEMBLY__ -#include <asm/virtconvert.h> -#include <linux/linkage.h> - -/* For virtual address to physical address conversion */ -#define VTOP(addr) __pa(addr) -#define PTOV(addr) __va(addr) - - -#endif /* !__ASSEMBLY__ */ - -/* Page protection values within PTE. */ - -/* MMUDR bits, in proper place. */ -#define CF_PAGE_LOCKED (0x00000002) -#define CF_PAGE_EXEC (0x00000004) -#define CF_PAGE_WRITABLE (0x00000008) -#define CF_PAGE_READABLE (0x00000010) -#define CF_PAGE_SYSTEM (0x00000020) -#define CF_PAGE_COPYBACK (0x00000040) -#define CF_PAGE_NOCACHE (0x00000080) - -#define CF_CACHEMASK (~0x00000040) -#define CF_PAGE_MMUDR_MASK (0x000000fe) - -#define _PAGE_NOCACHE030 (CF_PAGE_NOCACHE) - -/* MMUTR bits, need shifting down. */ -#define CF_PAGE_VALID (0x00000400) -#define CF_PAGE_SHARED (0x00000800) - -#define CF_PAGE_MMUTR_MASK (0x00000c00) -#define CF_PAGE_MMUTR_SHIFT (10) -#define CF_ASID_MMU_SHIFT (2) - -/* Fake bits, not implemented in CF, will get masked out before - hitting hardware, and might go away altogether once this port is - complete. */ -#if PAGE_SHIFT < 13 -#error COLDFIRE Error: Pages must be at least 8k in size -#endif -#define CF_PAGE_ACCESSED (0x00001000) -#define CF_PAGE_FILE (0x00000200) -#define CF_PAGE_DIRTY (0x00000001) - -#define _PAGE_CACHE040 0x020 /* 68040 cache mode, cachable, copyback */ -#define _PAGE_NOCACHE_S 0x040 /* 68040 no-cache mode, serialized */ -#define _PAGE_NOCACHE 0x060 /* 68040 cache mode, non-serialized */ -#define _PAGE_CACHE040W 0x000 /* 68040 cache mode, cachable, write-through */ -#define _DESCTYPE_MASK 0x003 -#define _CACHEMASK040 (~0x060) -#define _PAGE_GLOBAL040 0x400 /* 68040 global bit, used for kva descs */ - - -/* Externally used page protection values. */ -#define _PAGE_PRESENT (CF_PAGE_VALID) -#define _PAGE_ACCESSED (CF_PAGE_ACCESSED) -#define _PAGE_DIRTY (CF_PAGE_DIRTY) -#define _PAGE_READWRITE (CF_PAGE_WRITABLE \ - | CF_PAGE_READABLE \ - | CF_PAGE_SHARED \ - | CF_PAGE_SYSTEM) - -/* Compound page protection values. */ -#define PAGE_NONE __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED) - -#define PAGE_SHARED __pgprot(CF_PAGE_VALID \ - | CF_PAGE_READABLE \ - | CF_PAGE_WRITABLE \ - | CF_PAGE_ACCESSED) - -#define PAGE_INIT __pgprot(CF_PAGE_VALID \ - | CF_PAGE_WRITABLE \ - | CF_PAGE_READABLE \ - | CF_PAGE_EXEC \ - | CF_PAGE_SYSTEM \ - | CF_PAGE_SHARED) - -#define PAGE_KERNEL __pgprot(CF_PAGE_VALID \ - | CF_PAGE_WRITABLE \ - | CF_PAGE_READABLE \ - | CF_PAGE_EXEC \ - | CF_PAGE_SYSTEM \ - | CF_PAGE_SHARED \ - | CF_PAGE_ACCESSED) - -#define PAGE_COPY __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_READABLE) - -/* - * Page protections for initialising protection_map. See mm/mmap.c - * for use. In general, the bit positions are xwr, and P-items are - * private, the S-items are shared. - */ - -#define __P000 PAGE_NONE -#define __P100 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_EXEC) -#define __P010 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_WRITABLE \ - | CF_PAGE_ACCESSED) -#define __P110 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_WRITABLE \ - | CF_PAGE_EXEC) -#define __P001 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_READABLE) -#define __P101 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_READABLE \ - | CF_PAGE_EXEC) -#define __P011 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_READABLE \ - | CF_PAGE_WRITABLE \ - | CF_PAGE_ACCESSED) -#define __P111 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_WRITABLE \ - | CF_PAGE_READABLE \ - | CF_PAGE_EXEC) - -#define __S000 PAGE_NONE -#define __S100 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_EXEC) -#define __S010 PAGE_SHARED -#define __S110 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_WRITABLE \ - | CF_PAGE_EXEC) -#define __S001 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_READABLE) -#define __S101 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_READABLE \ - | CF_PAGE_EXEC) -#define __S011 PAGE_SHARED -#define __S111 __pgprot(CF_PAGE_VALID \ - | CF_PAGE_ACCESSED \ - | CF_PAGE_READABLE \ - | CF_PAGE_WRITABLE \ - | CF_PAGE_EXEC) - -#define PTE_MASK PAGE_MASK -#define CF_PAGE_CHG_MASK (PTE_MASK | CF_PAGE_ACCESSED | CF_PAGE_DIRTY) - -#ifndef __ASSEMBLY__ - -/* - * 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 mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) - -extern inline pte_t pte_modify(pte_t pte, pgprot_t newprot) -{ - pte_val(pte) = (pte_val(pte) & CF_PAGE_CHG_MASK) | pgprot_val(newprot); - return pte; -} - -#define pmd_set(pmdp, ptep) do {} while (0) - -static inline void pgd_set(pgd_t *pgdp, pmd_t *pmdp) -{ - pgd_val(*pgdp) = virt_to_phys(pmdp); -} - -#define __pte_page(pte) \ - ((unsigned long) ((pte_val(pte) & CF_PAGE_PGNUM_MASK) + PAGE_OFFSET)) -#define __pmd_page(pmd) ((unsigned long) (pmd_val(pmd))) - -extern inline int pte_none(pte_t pte) -{ - return !pte_val(pte); -} -extern inline int pte_present(pte_t pte) -{ - return pte_val(pte) & CF_PAGE_VALID; -} -extern inline void pte_clear(struct mm_struct *mm, unsigned long addr, - pte_t *ptep) -{ - pte_val(*ptep) = 0; -} - -#define pte_pagenr(pte) ((__pte_page(pte) - PAGE_OFFSET) >> PAGE_SHIFT) -#define pte_page(pte) virt_to_page(__pte_page(pte)) - -extern inline int pmd_none2(pmd_t *pmd) { return !pmd_val(*pmd); } -#define pmd_none(pmd) pmd_none2(&(pmd)) -extern inline int pmd_bad2(pmd_t *pmd) { return 0; } -#define pmd_bad(pmd) pmd_bad2(&(pmd)) -#define pmd_present(pmd) (!pmd_none2(&(pmd))) -extern inline void pmd_clear(pmd_t *pmdp) { pmd_val(*pmdp) = 0; } - -extern inline int pgd_none(pgd_t pgd) { return 0; } -extern inline int pgd_bad(pgd_t pgd) { return 0; } -extern inline int pgd_present(pgd_t pgd) { return 1; } -extern inline void pgd_clear(pgd_t *pgdp) {} - - -#define pte_ERROR(e) \ - printk(KERN_ERR "%s:%d: bad pte %08lx.\n", \ - __FILE__, __LINE__, pte_val(e)) -#define pmd_ERROR(e) \ - printk(KERN_ERR "%s:%d: bad pmd %08lx.\n", \ - __FILE__, __LINE__, pmd_val(e)) -#define pgd_ERROR(e) \ - printk(KERN_ERR "%s:%d: bad pgd %08lx.\n", \ - __FILE__, __LINE__, pgd_val(e)) - - -/* - * The following only work if pte_present() is true. - * Undefined behaviour if not... - * [we have the full set here even if they don't change from m68k] - */ -extern inline int pte_read(pte_t pte) \ - { return pte_val(pte) & CF_PAGE_READABLE; } -extern inline int pte_write(pte_t pte) \ - { return pte_val(pte) & CF_PAGE_WRITABLE; } -extern inline int pte_exec(pte_t pte) \ - { return pte_val(pte) & CF_PAGE_EXEC; } -extern inline int pte_dirty(pte_t pte) \ - { return pte_val(pte) & CF_PAGE_DIRTY; } -extern inline int pte_young(pte_t pte) \ - { return pte_val(pte) & CF_PAGE_ACCESSED; } -extern inline int pte_file(pte_t pte) \ - { return pte_val(pte) & CF_PAGE_FILE; } -static inline int pte_special(pte_t pte) { return 0; } - - -extern inline pte_t pte_wrprotect(pte_t pte) \ - { pte_val(pte) &= ~CF_PAGE_WRITABLE; return pte; } -extern inline pte_t pte_rdprotect(pte_t pte) \ - { pte_val(pte) &= ~CF_PAGE_READABLE; return pte; } -extern inline pte_t pte_exprotect(pte_t pte) \ - { pte_val(pte) &= ~CF_PAGE_EXEC; return pte; } -extern inline pte_t pte_mkclean(pte_t pte) \ - { pte_val(pte) &= ~CF_PAGE_DIRTY; return pte; } -extern inline pte_t pte_mkold(pte_t pte) \ - { pte_val(pte) &= ~CF_PAGE_ACCESSED; return pte; } -extern inline pte_t pte_mkwrite(pte_t pte) \ - { pte_val(pte) |= CF_PAGE_WRITABLE; return pte; } -extern inline pte_t pte_mkread(pte_t pte) \ - { pte_val(pte) |= CF_PAGE_READABLE; return pte; } -extern inline pte_t pte_mkexec(pte_t pte) \ - { pte_val(pte) |= CF_PAGE_EXEC; return pte; } -extern inline pte_t pte_mkdirty(pte_t pte) \ - { pte_val(pte) |= CF_PAGE_DIRTY; return pte; } -extern inline pte_t pte_mkyoung(pte_t pte) \ - { pte_val(pte) |= CF_PAGE_ACCESSED; return pte; } -extern inline pte_t pte_mknocache(pte_t pte) \ - { pte_val(pte) |= 0x80 | (pte_val(pte) & ~0x40); return pte; } -extern inline pte_t pte_mkcache(pte_t pte) \ - { pte_val(pte) &= ~CF_PAGE_NOCACHE; return pte; } -static inline pte_t pte_mkspecial(pte_t pte) { return pte; } - - -#define swapper_pg_dir kernel_pg_dir -extern pgd_t kernel_pg_dir[PTRS_PER_PGD]; - -/* Find an entry in a pagetable directory. */ -#define pgd_index(address) ((address) >> PGDIR_SHIFT) - -#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) - -/* Find an entry in a kernel pagetable directory. */ -#define pgd_offset_k(address) pgd_offset(&init_mm, address) - -/* Find an entry in the second-level pagetable. */ -extern inline pmd_t *pmd_offset(pgd_t *pgd, unsigned long address) -{ - return (pmd_t *) pgd; -} - -/* Find an entry in the third-level pagetable. */ -#define __pte_offset(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) -#define pte_offset_kernel(dir, address) ((pte_t *) __pmd_page(*(dir)) + \ - __pte_offset(address)) - -/* Disable caching for page at given kernel virtual address. */ -static inline void nocache_page(void *vaddr) -{ - pgd_t *dir; - pmd_t *pmdp; - pte_t *ptep; - unsigned long addr = (unsigned long)vaddr; - - dir = pgd_offset_k(addr); - pmdp = pmd_offset(dir, addr); - ptep = pte_offset_kernel(pmdp, addr); - *ptep = pte_mknocache(*ptep); -} - -/* Enable caching for page at given kernel virtual address. */ -static inline void cache_page(void *vaddr) -{ - pgd_t *dir; - pmd_t *pmdp; - pte_t *ptep; - unsigned long addr = (unsigned long)vaddr; - - dir = pgd_offset_k(addr); - pmdp = pmd_offset(dir, addr); - ptep = pte_offset_kernel(pmdp, addr); - *ptep = pte_mkcache(*ptep); -} - -#define PTE_FILE_MAX_BITS 21 -#define PTE_FILE_SHIFT 11 - -static inline unsigned long pte_to_pgoff(pte_t pte) -{ - return pte_val(pte) >> PTE_FILE_SHIFT; -} - -static inline pte_t pgoff_to_pte(unsigned pgoff) -{ - pte_t pte = __pte((pgoff << PTE_FILE_SHIFT) + CF_PAGE_FILE); - return pte; -} - -/* Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e)) */ -#define __swp_entry(type, offset) ((swp_entry_t) { (type) | \ - (offset << PTE_FILE_SHIFT) }) -#define __swp_type(x) ((x).val & 0xFF) -#define __swp_offset(x) ((x).val >> PTE_FILE_SHIFT) -#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) -#define __swp_entry_to_pte(x) (__pte((x).val)) - -#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT)) - -#define pte_offset_map(pmdp, address) ((pte_t *)__pmd_page(*pmdp) + \ - __pte_offset(address)) -#define pte_offset_map_nested(pmdp, address) pte_offset_map(pmdp, address) -#define pte_unmap(pte) kunmap(pte) -#define pte_unmap_nested(pte) kunmap(pte) - -#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot)) -#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT) - - -#endif /* !__ASSEMBLY__ */ -#endif /* !_CF_PGTABLE_H */ |