137 lines
4 KiB
C
137 lines
4 KiB
C
/* 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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#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
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void flush_kernel_dcache_page_addr(void *addr);
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static inline void flush_kernel_dcache_page(struct page *page)
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{
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flush_kernel_dcache_page_addr(page_address(page));
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}
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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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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(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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#include <asm/kmap_types.h>
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#define ARCH_HAS_KMAP
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static inline void *kmap(struct page *page)
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{
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might_sleep();
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return page_address(page);
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}
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static inline void kunmap(struct page *page)
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{
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flush_kernel_dcache_page_addr(page_address(page));
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}
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static inline void *kmap_atomic(struct page *page)
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{
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preempt_disable();
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pagefault_disable();
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return page_address(page);
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}
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static inline void __kunmap_atomic(void *addr)
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{
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flush_kernel_dcache_page_addr(addr);
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pagefault_enable();
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preempt_enable();
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}
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#define kmap_atomic_prot(page, prot) kmap_atomic(page)
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#define kmap_atomic_pfn(pfn) kmap_atomic(pfn_to_page(pfn))
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#endif /* _PARISC_CACHEFLUSH_H */
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