cacheflush.h (2913B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _PARISC_CACHEFLUSH_H 3#define _PARISC_CACHEFLUSH_H 4 5#include <linux/mm.h> 6#include <linux/uaccess.h> 7#include <asm/tlbflush.h> 8 9/* The usual comment is "Caches aren't brain-dead on the <architecture>". 10 * Unfortunately, that doesn't apply to PA-RISC. */ 11 12#include <linux/jump_label.h> 13 14DECLARE_STATIC_KEY_TRUE(parisc_has_cache); 15DECLARE_STATIC_KEY_TRUE(parisc_has_dcache); 16DECLARE_STATIC_KEY_TRUE(parisc_has_icache); 17 18#define flush_cache_dup_mm(mm) flush_cache_mm(mm) 19 20void flush_user_icache_range_asm(unsigned long, unsigned long); 21void flush_kernel_icache_range_asm(unsigned long, unsigned long); 22void flush_user_dcache_range_asm(unsigned long, unsigned long); 23void flush_kernel_dcache_range_asm(unsigned long, unsigned long); 24void purge_kernel_dcache_range_asm(unsigned long, unsigned long); 25void flush_kernel_dcache_page_asm(void *); 26void flush_kernel_icache_page(void *); 27 28/* Cache flush operations */ 29 30void flush_cache_all_local(void); 31void flush_cache_all(void); 32void flush_cache_mm(struct mm_struct *mm); 33 34void flush_kernel_dcache_page_addr(void *addr); 35 36#define flush_kernel_dcache_range(start,size) \ 37 flush_kernel_dcache_range_asm((start), (start)+(size)); 38 39#define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 40void flush_kernel_vmap_range(void *vaddr, int size); 41void invalidate_kernel_vmap_range(void *vaddr, int size); 42 43#define flush_cache_vmap(start, end) flush_cache_all() 44#define flush_cache_vunmap(start, end) flush_cache_all() 45 46#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 47void flush_dcache_page(struct page *page); 48 49#define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) 50#define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) 51 52#define flush_icache_page(vma,page) do { \ 53 flush_kernel_dcache_page_addr(page_address(page)); \ 54 flush_kernel_icache_page(page_address(page)); \ 55} while (0) 56 57#define flush_icache_range(s,e) do { \ 58 flush_kernel_dcache_range_asm(s,e); \ 59 flush_kernel_icache_range_asm(s,e); \ 60} while (0) 61 62void copy_to_user_page(struct vm_area_struct *vma, struct page *page, 63 unsigned long user_vaddr, void *dst, void *src, int len); 64void copy_from_user_page(struct vm_area_struct *vma, struct page *page, 65 unsigned long user_vaddr, void *dst, void *src, int len); 66void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, 67 unsigned long pfn); 68void flush_cache_range(struct vm_area_struct *vma, 69 unsigned long start, unsigned long end); 70 71/* defined in pacache.S exported in cache.c used by flush_anon_page */ 72void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr); 73 74#define ARCH_HAS_FLUSH_ANON_PAGE 75void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr); 76 77#define ARCH_HAS_FLUSH_ON_KUNMAP 78static inline void kunmap_flush_on_unmap(void *addr) 79{ 80 flush_kernel_dcache_page_addr(addr); 81} 82 83#endif /* _PARISC_CACHEFLUSH_H */ 84