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 */