cache.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:3k
- /*
- * linux/include/asm-arm/proc-armo/cache.h
- *
- * Copyright (C) 1999-2001 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Cache handling for 26-bit ARM processors.
- */
- #define flush_cache_all() do { } while (0)
- #define flush_cache_mm(mm) do { } while (0)
- #define flush_cache_range(mm,start,end) do { } while (0)
- #define flush_cache_page(vma,vmaddr) do { } while (0)
- #define flush_page_to_ram(page) do { } while (0)
- #define invalidate_dcache_range(start,end) do { } while (0)
- #define clean_dcache_range(start,end) do { } while (0)
- #define flush_dcache_range(start,end) do { } while (0)
- #define flush_dcache_page(page) do { } while (0)
- #define clean_dcache_entry(_s) do { } while (0)
- #define clean_cache_entry(_start) do { } while (0)
- #define flush_icache_range(start,end) do { } while (0)
- #define flush_icache_page(vma,page) do { } while (0)
- /* DAG: ARM3 will flush cache on MEMC updates anyway? so don't bother */
- #define clean_cache_area(_start,_size) do { } while (0)
- /*
- * TLB flushing:
- *
- * - flush_tlb_all() flushes all processes TLBs
- * - flush_tlb_mm(mm) flushes the specified mm context TLB's
- * - flush_tlb_page(vma, vmaddr) flushes one page
- * - flush_tlb_range(mm, start, end) flushes a range of pages
- */
- #define flush_tlb_all() memc_update_all()
- #define flush_tlb_mm(mm) memc_update_mm(mm)
- #define flush_tlb_range(mm,start,end)
- do { memc_update_mm(mm); (void)(start); (void)(end); } while (0)
- #define flush_tlb_page(vma, vmaddr) do { } while (0)
- /*
- * The following handle the weird MEMC chip
- */
- static inline void memc_update_all(void)
- {
- struct task_struct *p;
- cpu_memc_update_all(init_mm.pgd);
- for_each_task(p) {
- if (!p->mm)
- continue;
- cpu_memc_update_all(p->mm->pgd);
- }
- processor._set_pgd(current->active_mm->pgd);
- }
- static inline void memc_update_mm(struct mm_struct *mm)
- {
- cpu_memc_update_all(mm->pgd);
- if (mm == current->active_mm)
- processor._set_pgd(mm->pgd);
- }
- static inline void
- memc_clear(struct mm_struct *mm, struct page *page)
- {
- cpu_memc_update_entry(mm->pgd, (unsigned long) page_address(page), 0);
- if (mm == current->active_mm)
- processor._set_pgd(mm->pgd);
- }
- static inline void
- memc_update_addr(struct mm_struct *mm, pte_t pte, unsigned long vaddr)
- {
- cpu_memc_update_entry(mm->pgd, pte_val(pte), vaddr);
- if (mm == current->active_mm)
- processor._set_pgd(mm->pgd);
- }
- static inline void
- update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, pte_t pte)
- {
- struct mm_struct *mm = vma->vm_mm;
- memc_update_addr(mm, pte, addr);
- }