1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _SPARC_CACHEFLUSH_H 3#define _SPARC_CACHEFLUSH_H 4 5#include <linux/page-flags.h> 6#include <asm/cachetlb_32.h> 7 8#define flush_cache_all() \ 9 sparc32_cachetlb_ops->cache_all() 10#define flush_cache_mm(mm) \ 11 sparc32_cachetlb_ops->cache_mm(mm) 12#define flush_cache_dup_mm(mm) \ 13 sparc32_cachetlb_ops->cache_mm(mm) 14#define flush_cache_range(vma,start,end) \ 15 sparc32_cachetlb_ops->cache_range(vma, start, end) 16#define flush_cache_page(vma,addr,pfn) \ 17 sparc32_cachetlb_ops->cache_page(vma, addr) 18#define flush_icache_range(start, end) do { } while (0) 19 20#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 21 do { \ 22 flush_cache_page(vma, vaddr, page_to_pfn(page));\ 23 memcpy(dst, src, len); \ 24 } while (0) 25#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 26 do { \ 27 flush_cache_page(vma, vaddr, page_to_pfn(page));\ 28 memcpy(dst, src, len); \ 29 } while (0) 30 31#define __flush_page_to_ram(addr) \ 32 sparc32_cachetlb_ops->page_to_ram(addr) 33#define flush_sig_insns(mm,insn_addr) \ 34 sparc32_cachetlb_ops->sig_insns(mm, insn_addr) 35#define flush_page_for_dma(addr) \ 36 sparc32_cachetlb_ops->page_for_dma(addr) 37 38void sparc_flush_page_to_ram(struct page *page); 39void sparc_flush_folio_to_ram(struct folio *folio); 40 41#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 42#define flush_dcache_folio(folio) sparc_flush_folio_to_ram(folio) 43static inline void flush_dcache_page(struct page *page) 44{ 45 flush_dcache_folio(page_folio(page)); 46} 47#define flush_dcache_mmap_lock(mapping) do { } while (0) 48#define flush_dcache_mmap_unlock(mapping) do { } while (0) 49 50#define flush_cache_vmap(start, end) flush_cache_all() 51#define flush_cache_vmap_early(start, end) do { } while (0) 52#define flush_cache_vunmap(start, end) flush_cache_all() 53 54/* When a context switch happens we must flush all user windows so that 55 * the windows of the current process are flushed onto its stack. This 56 * way the windows are all clean for the next process and the stack 57 * frames are up to date. 58 */ 59void flush_user_windows(void); 60void kill_user_windows(void); 61void flushw_all(void); 62 63#endif /* _SPARC_CACHEFLUSH_H */ 64