diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-01-27 12:01:51 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-01-27 12:01:51 +0100 |
commit | 3ddeb51d9c83931c1ca6abf76a38934c5a1ed918 (patch) | |
tree | fc2efb59d627135ea2199a8a68415b162646b121 /include/asm-m68k/motorola_pgtable.h | |
parent | 5a611268b69f05262936dd177205acbce4471358 (diff) | |
parent | 5ee810072175042775e39bdd3eaaa68884c27805 (diff) |
Merge branch 'linus' into core/percpu
Conflicts:
arch/x86/kernel/setup_percpu.c
Diffstat (limited to 'include/asm-m68k/motorola_pgtable.h')
-rw-r--r-- | include/asm-m68k/motorola_pgtable.h | 291 |
1 files changed, 0 insertions, 291 deletions
diff --git a/include/asm-m68k/motorola_pgtable.h b/include/asm-m68k/motorola_pgtable.h deleted file mode 100644 index 8e9a8a754dd..00000000000 --- a/include/asm-m68k/motorola_pgtable.h +++ /dev/null @@ -1,291 +0,0 @@ -#ifndef _MOTOROLA_PGTABLE_H -#define _MOTOROLA_PGTABLE_H - - -/* - * Definitions for MMU descriptors - */ -#define _PAGE_PRESENT 0x001 -#define _PAGE_SHORT 0x002 -#define _PAGE_RONLY 0x004 -#define _PAGE_ACCESSED 0x008 -#define _PAGE_DIRTY 0x010 -#define _PAGE_SUPER 0x080 /* 68040 supervisor only */ -#define _PAGE_GLOBAL040 0x400 /* 68040 global bit, used for kva descs */ -#define _PAGE_NOCACHE030 0x040 /* 68030 no-cache mode */ -#define _PAGE_NOCACHE 0x060 /* 68040 cache mode, non-serialized */ -#define _PAGE_NOCACHE_S 0x040 /* 68040 no-cache mode, serialized */ -#define _PAGE_CACHE040 0x020 /* 68040 cache mode, cachable, copyback */ -#define _PAGE_CACHE040W 0x000 /* 68040 cache mode, cachable, write-through */ - -#define _DESCTYPE_MASK 0x003 - -#define _CACHEMASK040 (~0x060) -#define _TABLE_MASK (0xfffffe00) - -#define _PAGE_TABLE (_PAGE_SHORT) -#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_NOCACHE) - -#define _PAGE_PROTNONE 0x004 -#define _PAGE_FILE 0x008 /* pagecache or swap? */ - -#ifndef __ASSEMBLY__ - -/* This is the cache mode to be used for pages containing page descriptors for - * processors >= '040. It is in pte_mknocache(), and the variable is defined - * and initialized in head.S */ -extern int m68k_pgtable_cachemode; - -/* This is the cache mode for normal pages, for supervisor access on - * processors >= '040. It is used in pte_mkcache(), and the variable is - * defined and initialized in head.S */ - -#if defined(CPU_M68060_ONLY) && defined(CONFIG_060_WRITETHROUGH) -#define m68k_supervisor_cachemode _PAGE_CACHE040W -#elif defined(CPU_M68040_OR_M68060_ONLY) -#define m68k_supervisor_cachemode _PAGE_CACHE040 -#elif defined(CPU_M68020_OR_M68030_ONLY) -#define m68k_supervisor_cachemode 0 -#else -extern int m68k_supervisor_cachemode; -#endif - -#if defined(CPU_M68040_OR_M68060_ONLY) -#define mm_cachebits _PAGE_CACHE040 -#elif defined(CPU_M68020_OR_M68030_ONLY) -#define mm_cachebits 0 -#else -extern unsigned long mm_cachebits; -#endif - -#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED | mm_cachebits) -#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | mm_cachebits) -#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED | mm_cachebits) -#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED | mm_cachebits) -#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_DIRTY | _PAGE_ACCESSED | mm_cachebits) - -/* Alternate definitions that are compile time constants, for - initializing protection_map. The cachebits are fixed later. */ -#define PAGE_NONE_C __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED) -#define PAGE_SHARED_C __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED) -#define PAGE_COPY_C __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED) -#define PAGE_READONLY_C __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED) - -/* - * The m68k can't do page protection for execute, and considers that the same are read. - * Also, write permissions imply read permissions. This is the closest we can get.. - */ -#define __P000 PAGE_NONE_C -#define __P001 PAGE_READONLY_C -#define __P010 PAGE_COPY_C -#define __P011 PAGE_COPY_C -#define __P100 PAGE_READONLY_C -#define __P101 PAGE_READONLY_C -#define __P110 PAGE_COPY_C -#define __P111 PAGE_COPY_C - -#define __S000 PAGE_NONE_C -#define __S001 PAGE_READONLY_C -#define __S010 PAGE_SHARED_C -#define __S011 PAGE_SHARED_C -#define __S100 PAGE_READONLY_C -#define __S101 PAGE_READONLY_C -#define __S110 PAGE_SHARED_C -#define __S111 PAGE_SHARED_C - -/* - * 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)) - -static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) -{ - pte_val(pte) = (pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot); - return pte; -} - -static inline void pmd_set(pmd_t *pmdp, pte_t *ptep) -{ - unsigned long ptbl = virt_to_phys(ptep) | _PAGE_TABLE | _PAGE_ACCESSED; - unsigned long *ptr = pmdp->pmd; - short i = 16; - while (--i >= 0) { - *ptr++ = ptbl; - ptbl += (sizeof(pte_t)*PTRS_PER_PTE/16); - } -} - -static inline void pgd_set(pgd_t *pgdp, pmd_t *pmdp) -{ - pgd_val(*pgdp) = _PAGE_TABLE | _PAGE_ACCESSED | __pa(pmdp); -} - -#define __pte_page(pte) ((unsigned long)__va(pte_val(pte) & PAGE_MASK)) -#define __pmd_page(pmd) ((unsigned long)__va(pmd_val(pmd) & _TABLE_MASK)) -#define __pgd_page(pgd) ((unsigned long)__va(pgd_val(pgd) & _TABLE_MASK)) - - -#define pte_none(pte) (!pte_val(pte)) -#define pte_present(pte) (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PROTNONE)) -#define pte_clear(mm,addr,ptep) ({ pte_val(*(ptep)) = 0; }) - -#define pte_page(pte) virt_to_page(__va(pte_val(pte))) -#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT) -#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot)) - -#define pmd_none(pmd) (!pmd_val(pmd)) -#define pmd_bad(pmd) ((pmd_val(pmd) & _DESCTYPE_MASK) != _PAGE_TABLE) -#define pmd_present(pmd) (pmd_val(pmd) & _PAGE_TABLE) -#define pmd_clear(pmdp) ({ \ - unsigned long *__ptr = pmdp->pmd; \ - short __i = 16; \ - while (--__i >= 0) \ - *__ptr++ = 0; \ -}) -#define pmd_page(pmd) virt_to_page(__va(pmd_val(pmd))) - - -#define pgd_none(pgd) (!pgd_val(pgd)) -#define pgd_bad(pgd) ((pgd_val(pgd) & _DESCTYPE_MASK) != _PAGE_TABLE) -#define pgd_present(pgd) (pgd_val(pgd) & _PAGE_TABLE) -#define pgd_clear(pgdp) ({ pgd_val(*pgdp) = 0; }) -#define pgd_page(pgd) (mem_map + ((unsigned long)(__va(pgd_val(pgd)) - PAGE_OFFSET) >> PAGE_SHIFT)) - -#define pte_ERROR(e) \ - printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e)) -#define pmd_ERROR(e) \ - printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e)) -#define pgd_ERROR(e) \ - printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) - - -/* - * The following only work if pte_present() is true. - * Undefined behaviour if not.. - */ -static inline int pte_write(pte_t pte) { return !(pte_val(pte) & _PAGE_RONLY); } -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_special(pte_t pte) { return 0; } - -static inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) |= _PAGE_RONLY; return pte; } -static inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~_PAGE_DIRTY; return pte; } -static inline pte_t pte_mkold(pte_t pte) { pte_val(pte) &= ~_PAGE_ACCESSED; return pte; } -static inline pte_t pte_mkwrite(pte_t pte) { pte_val(pte) &= ~_PAGE_RONLY; return pte; } -static inline pte_t pte_mkdirty(pte_t pte) { pte_val(pte) |= _PAGE_DIRTY; return pte; } -static inline pte_t pte_mkyoung(pte_t pte) { pte_val(pte) |= _PAGE_ACCESSED; return pte; } -static inline pte_t pte_mknocache(pte_t pte) -{ - pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | m68k_pgtable_cachemode; - return pte; -} -static inline pte_t pte_mkcache(pte_t pte) -{ - pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | m68k_supervisor_cachemode; - return pte; -} -static inline pte_t pte_mkspecial(pte_t pte) { return pte; } - -#define PAGE_DIR_OFFSET(tsk,address) pgd_offset((tsk),(address)) - -#define pgd_index(address) ((address) >> PGDIR_SHIFT) - -/* to find an entry in a page-table-directory */ -static inline pgd_t *pgd_offset(const struct mm_struct *mm, - unsigned long address) -{ - return mm->pgd + pgd_index(address); -} - -#define swapper_pg_dir kernel_pg_dir -extern pgd_t kernel_pg_dir[128]; - -static inline pgd_t *pgd_offset_k(unsigned long address) -{ - return kernel_pg_dir + (address >> PGDIR_SHIFT); -} - - -/* Find an entry in the second-level page table.. */ -static inline pmd_t *pmd_offset(pgd_t *dir, unsigned long address) -{ - return (pmd_t *)__pgd_page(*dir) + ((address >> PMD_SHIFT) & (PTRS_PER_PMD-1)); -} - -/* Find an entry in the third-level page table.. */ -static inline pte_t *pte_offset_kernel(pmd_t *pmdp, unsigned long address) -{ - return (pte_t *)__pmd_page(*pmdp) + ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)); -} - -#define pte_offset_map(pmdp,address) ((pte_t *)__pmd_page(*pmdp) + (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))) -#define pte_offset_map_nested(pmdp, address) pte_offset_map(pmdp, address) -#define pte_unmap(pte) ((void)0) -#define pte_unmap_nested(pte) ((void)0) - -/* - * Allocate and free page tables. The xxx_kernel() versions are - * used to allocate a kernel page table - this turns on ASN bits - * if any. - */ - -/* Prior to calling these routines, the page should have been flushed - * from both the cache and ATC, or the CPU might not notice that the - * cache setting for the page has been changed. -jskov - */ -static inline void nocache_page(void *vaddr) -{ - unsigned long addr = (unsigned long)vaddr; - - if (CPU_IS_040_OR_060) { - pgd_t *dir; - pmd_t *pmdp; - pte_t *ptep; - - dir = pgd_offset_k(addr); - pmdp = pmd_offset(dir, addr); - ptep = pte_offset_kernel(pmdp, addr); - *ptep = pte_mknocache(*ptep); - } -} - -static inline void cache_page(void *vaddr) -{ - unsigned long addr = (unsigned long)vaddr; - - if (CPU_IS_040_OR_060) { - pgd_t *dir; - pmd_t *pmdp; - pte_t *ptep; - - 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 28 - -static inline unsigned long pte_to_pgoff(pte_t pte) -{ - return pte.pte >> 4; -} - -static inline pte_t pgoff_to_pte(unsigned off) -{ - pte_t pte = { (off << 4) + _PAGE_FILE }; - return pte; -} - -/* Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e)) */ -#define __swp_type(x) (((x).val >> 4) & 0xff) -#define __swp_offset(x) ((x).val >> 12) -#define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 4) | ((offset) << 12) }) -#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) -#define __swp_entry_to_pte(x) ((pte_t) { (x).val }) - -#endif /* !__ASSEMBLY__ */ -#endif /* _MOTOROLA_PGTABLE_H */ |