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106 lines
3.5 KiB
106 lines
3.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _PARISC_CACHEFLUSH_H |
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#define _PARISC_CACHEFLUSH_H |
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#include <linux/mm.h> |
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#include <linux/uaccess.h> |
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#include <asm/tlbflush.h> |
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/* The usual comment is "Caches aren't brain-dead on the <architecture>". |
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* Unfortunately, that doesn't apply to PA-RISC. */ |
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/* Internal implementation */ |
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void flush_data_cache_local(void *); /* flushes local data-cache only */ |
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void flush_instruction_cache_local(void *); /* flushes local code-cache only */ |
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#ifdef CONFIG_SMP |
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void flush_data_cache(void); /* flushes data-cache only (all processors) */ |
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void flush_instruction_cache(void); /* flushes i-cache only (all processors) */ |
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#else |
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#define flush_data_cache() flush_data_cache_local(NULL) |
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#define flush_instruction_cache() flush_instruction_cache_local(NULL) |
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#endif |
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#define flush_cache_dup_mm(mm) flush_cache_mm(mm) |
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void flush_user_icache_range_asm(unsigned long, unsigned long); |
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void flush_kernel_icache_range_asm(unsigned long, unsigned long); |
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void flush_user_dcache_range_asm(unsigned long, unsigned long); |
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void flush_kernel_dcache_range_asm(unsigned long, unsigned long); |
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void purge_kernel_dcache_range_asm(unsigned long, unsigned long); |
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void flush_kernel_dcache_page_asm(void *); |
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void flush_kernel_icache_page(void *); |
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/* Cache flush operations */ |
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void flush_cache_all_local(void); |
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void flush_cache_all(void); |
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void flush_cache_mm(struct mm_struct *mm); |
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void flush_kernel_dcache_page_addr(void *addr); |
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#define flush_kernel_dcache_range(start,size) \ |
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flush_kernel_dcache_range_asm((start), (start)+(size)); |
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#define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 |
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void flush_kernel_vmap_range(void *vaddr, int size); |
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void invalidate_kernel_vmap_range(void *vaddr, int size); |
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#define flush_cache_vmap(start, end) flush_cache_all() |
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#define flush_cache_vunmap(start, end) flush_cache_all() |
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#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 |
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extern void flush_dcache_page(struct page *page); |
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#define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) |
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#define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) |
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#define flush_icache_page(vma,page) do { \ |
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flush_kernel_dcache_page_addr(page_address(page)); \ |
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flush_kernel_icache_page(page_address(page)); \ |
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} while (0) |
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#define flush_icache_range(s,e) do { \ |
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flush_kernel_dcache_range_asm(s,e); \ |
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flush_kernel_icache_range_asm(s,e); \ |
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} while (0) |
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#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ |
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do { \ |
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flush_cache_page(vma, vaddr, page_to_pfn(page)); \ |
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memcpy(dst, src, len); \ |
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flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \ |
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} while (0) |
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#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ |
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do { \ |
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flush_cache_page(vma, vaddr, page_to_pfn(page)); \ |
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memcpy(dst, src, len); \ |
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} while (0) |
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void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn); |
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void flush_cache_range(struct vm_area_struct *vma, |
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unsigned long start, unsigned long end); |
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/* defined in pacache.S exported in cache.c used by flush_anon_page */ |
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void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr); |
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#define ARCH_HAS_FLUSH_ANON_PAGE |
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static inline void |
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flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr) |
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{ |
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if (PageAnon(page)) { |
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flush_tlb_page(vma, vmaddr); |
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preempt_disable(); |
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flush_dcache_page_asm(page_to_phys(page), vmaddr); |
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preempt_enable(); |
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} |
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} |
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#define ARCH_HAS_FLUSH_ON_KUNMAP |
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static inline void kunmap_flush_on_unmap(void *addr) |
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{ |
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flush_kernel_dcache_page_addr(addr); |
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} |
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#endif /* _PARISC_CACHEFLUSH_H */ |
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