1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef __ASM_SH_CACHEFLUSH_H
  3#define __ASM_SH_CACHEFLUSH_H
  4
  5#include <linux/mm.h>
  6
  7/*
  8 * Cache flushing:
  9 *
 10 *  - flush_cache_all() flushes entire cache
 11 *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
 12 *  - flush_cache_dup mm(mm) handles cache flushing when forking
 13 *  - flush_cache_page(mm, vmaddr, pfn) flushes a single page
 14 *  - flush_cache_range(vma, start, end) flushes a range of pages
 15 *
 16 *  - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
 17 *  - flush_icache_range(start, end) flushes(invalidates) a range for icache
 18 *  - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
 19 *  - flush_cache_sigtramp(vaddr) flushes the signal trampoline
 20 */
 21extern void (*local_flush_cache_all)(void *args);
 22extern void (*local_flush_cache_mm)(void *args);
 23extern void (*local_flush_cache_dup_mm)(void *args);
 24extern void (*local_flush_cache_page)(void *args);
 25extern void (*local_flush_cache_range)(void *args);
 26extern void (*local_flush_dcache_page)(void *args);
 27extern void (*local_flush_icache_range)(void *args);
 28extern void (*local_flush_icache_page)(void *args);
 29extern void (*local_flush_cache_sigtramp)(void *args);
 30
 31static inline void cache_noop(void *args) { }
 32
 33extern void (*__flush_wback_region)(void *start, int size);
 34extern void (*__flush_purge_region)(void *start, int size);
 35extern void (*__flush_invalidate_region)(void *start, int size);
 36
 37extern void flush_cache_all(void);
 38extern void flush_cache_mm(struct mm_struct *mm);
 39extern void flush_cache_dup_mm(struct mm_struct *mm);
 40extern void flush_cache_page(struct vm_area_struct *vma,
 41				unsigned long addr, unsigned long pfn);
 42extern void flush_cache_range(struct vm_area_struct *vma,
 43				 unsigned long start, unsigned long end);
 44#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
 45extern void flush_dcache_page(struct page *page);
 46extern void flush_icache_range(unsigned long start, unsigned long end);
 47#define flush_icache_user_range flush_icache_range
 48extern void flush_icache_page(struct vm_area_struct *vma,
 49				 struct page *page);
 50extern void flush_cache_sigtramp(unsigned long address);
 51
 52struct flusher_data {
 53	struct vm_area_struct *vma;
 54	unsigned long addr1, addr2;
 55};
 56
 57#define ARCH_HAS_FLUSH_ANON_PAGE
 58extern void __flush_anon_page(struct page *page, unsigned long);
 59
 60static inline void flush_anon_page(struct vm_area_struct *vma,
 61				   struct page *page, unsigned long vmaddr)
 62{
 63	if (boot_cpu_data.dcache.n_aliases && PageAnon(page))
 64		__flush_anon_page(page, vmaddr);
 65}
 66static inline void flush_kernel_vmap_range(void *addr, int size)
 67{
 68	__flush_wback_region(addr, size);
 69}
 70static inline void invalidate_kernel_vmap_range(void *addr, int size)
 71{
 72	__flush_invalidate_region(addr, size);
 73}
 74
 75#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
 76static inline void flush_kernel_dcache_page(struct page *page)
 77{
 78	flush_dcache_page(page);
 79}
 80
 81extern void copy_to_user_page(struct vm_area_struct *vma,
 82	struct page *page, unsigned long vaddr, void *dst, const void *src,
 83	unsigned long len);
 84
 85extern void copy_from_user_page(struct vm_area_struct *vma,
 86	struct page *page, unsigned long vaddr, void *dst, const void *src,
 87	unsigned long len);
 88
 89#define flush_cache_vmap(start, end)		local_flush_cache_all(NULL)
 90#define flush_cache_vunmap(start, end)		local_flush_cache_all(NULL)
 91
 92#define flush_dcache_mmap_lock(mapping)		do { } while (0)
 93#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
 94
 95void kmap_coherent_init(void);
 96void *kmap_coherent(struct page *page, unsigned long addr);
 97void kunmap_coherent(void *kvaddr);
 98
 99#define PG_dcache_clean	PG_arch_1
100
101void cpu_cache_init(void);
102
103static inline void *sh_cacheop_vaddr(void *vaddr)
104{
105	if (__in_29bit_mode())
106		vaddr = (void *)CAC_ADDR((unsigned long)vaddr);
107	return vaddr;
108}
109
110#endif /* __ASM_SH_CACHEFLUSH_H */