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Diffstat (limited to '')
-rw-r--r-- | arch/parisc/include/asm/cacheflush.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h new file mode 100644 index 000000000..c8b6928ce --- /dev/null +++ b/arch/parisc/include/asm/cacheflush.h @@ -0,0 +1,88 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _PARISC_CACHEFLUSH_H +#define _PARISC_CACHEFLUSH_H + +#include <linux/mm.h> +#include <linux/uaccess.h> +#include <asm/tlbflush.h> + +/* The usual comment is "Caches aren't brain-dead on the <architecture>". + * Unfortunately, that doesn't apply to PA-RISC. */ + +#include <linux/jump_label.h> + +DECLARE_STATIC_KEY_TRUE(parisc_has_cache); +DECLARE_STATIC_KEY_TRUE(parisc_has_dcache); +DECLARE_STATIC_KEY_TRUE(parisc_has_icache); + +#define flush_cache_dup_mm(mm) flush_cache_mm(mm) + +void flush_user_icache_range_asm(unsigned long, unsigned long); +void flush_kernel_icache_range_asm(unsigned long, unsigned long); +void flush_user_dcache_range_asm(unsigned long, unsigned long); +void flush_kernel_dcache_range_asm(unsigned long, unsigned long); +void purge_kernel_dcache_range_asm(unsigned long, unsigned long); +void flush_kernel_dcache_page_asm(const void *addr); +void flush_kernel_icache_page(void *); + +/* Cache flush operations */ + +void flush_cache_all_local(void); +void flush_cache_all(void); +void flush_cache_mm(struct mm_struct *mm); + +void flush_kernel_dcache_page_addr(const void *addr); + +#define flush_kernel_dcache_range(start,size) \ + flush_kernel_dcache_range_asm((start), (start)+(size)); + +#define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 +void flush_kernel_vmap_range(void *vaddr, int size); +void invalidate_kernel_vmap_range(void *vaddr, int size); + +#define flush_cache_vmap(start, end) flush_cache_all() +#define flush_cache_vunmap(start, end) flush_cache_all() + +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 +void flush_dcache_page(struct page *page); + +#define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) +#define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) +#define flush_dcache_mmap_lock_irqsave(mapping, flags) \ + xa_lock_irqsave(&mapping->i_pages, flags) +#define flush_dcache_mmap_unlock_irqrestore(mapping, flags) \ + xa_unlock_irqrestore(&mapping->i_pages, flags) + +#define flush_icache_page(vma,page) do { \ + flush_kernel_dcache_page_addr(page_address(page)); \ + flush_kernel_icache_page(page_address(page)); \ +} while (0) + +#define flush_icache_range(s,e) do { \ + flush_kernel_dcache_range_asm(s,e); \ + flush_kernel_icache_range_asm(s,e); \ +} while (0) + +void copy_to_user_page(struct vm_area_struct *vma, struct page *page, + unsigned long user_vaddr, void *dst, void *src, int len); +void copy_from_user_page(struct vm_area_struct *vma, struct page *page, + unsigned long user_vaddr, void *dst, void *src, int len); +void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, + unsigned long pfn); +void flush_cache_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end); + +/* defined in pacache.S exported in cache.c used by flush_anon_page */ +void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr); + +#define ARCH_HAS_FLUSH_ANON_PAGE +void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr); + +#define ARCH_HAS_FLUSH_ON_KUNMAP +static inline void kunmap_flush_on_unmap(const void *addr) +{ + flush_kernel_dcache_page_addr(addr); +} + +#endif /* _PARISC_CACHEFLUSH_H */ + |