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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/sparc/include/asm/cacheflush_32.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef _SPARC_CACHEFLUSH_H

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#define _SPARC_CACHEFLUSH_H

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#include <linux/page-flags.h>

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#include <asm/cachetlb_32.h>

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#define flush_cache_all() \

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	sparc32_cachetlb_ops->cache_all()

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#define flush_cache_mm(mm) \

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	sparc32_cachetlb_ops->cache_mm(mm)

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#define flush_cache_dup_mm(mm) \

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	sparc32_cachetlb_ops->cache_mm(mm)

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#define flush_cache_range(vma,start,end) \

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	sparc32_cachetlb_ops->cache_range(vma, start, end)

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#define flush_cache_page(vma,addr,pfn) \

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	sparc32_cachetlb_ops->cache_page(vma, addr)

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#define flush_icache_range(start, end)		do { } while (0)

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#define copy_to_user_page(vma, page, vaddr, dst, src, len) \

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	do {							\

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		flush_cache_page(vma, vaddr, page_to_pfn(page));\

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		memcpy(dst, src, len);				\

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	} while (0)

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#define copy_from_user_page(vma, page, vaddr, dst, src, len) \

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	do {							\

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		flush_cache_page(vma, vaddr, page_to_pfn(page));\

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		memcpy(dst, src, len);				\

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	} while (0)

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#define __flush_page_to_ram(addr) \

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	sparc32_cachetlb_ops->page_to_ram(addr)

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#define flush_sig_insns(mm,insn_addr) \

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	sparc32_cachetlb_ops->sig_insns(mm, insn_addr)

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#define flush_page_for_dma(addr) \

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	sparc32_cachetlb_ops->page_for_dma(addr)

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void sparc_flush_page_to_ram(struct page *page);

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void sparc_flush_folio_to_ram(struct folio *folio);

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#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1

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#define flush_dcache_folio(folio)		sparc_flush_folio_to_ram(folio)

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static inline void flush_dcache_page(struct page *page)

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{

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	flush_dcache_folio(page_folio(page));

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}

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#define flush_dcache_mmap_lock(mapping)		do { } while (0)

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#define flush_dcache_mmap_unlock(mapping)	do { } while (0)

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#define flush_cache_vmap(start, end)		flush_cache_all()

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#define flush_cache_vmap_early(start, end)	do { } while (0)

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#define flush_cache_vunmap(start, end)		flush_cache_all()

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/* When a context switch happens we must flush all user windows so that

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 * the windows of the current process are flushed onto its stack. This

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 * way the windows are all clean for the next process and the stack

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 * frames are up to date.

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 */

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void flush_user_windows(void);

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void kill_user_windows(void);

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void flushw_all(void);

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#endif /* _SPARC_CACHEFLUSH_H */

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