From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/sparc/include/asm/cacheflush_64.h | 82 ++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 arch/sparc/include/asm/cacheflush_64.h (limited to 'arch/sparc/include/asm/cacheflush_64.h') diff --git a/arch/sparc/include/asm/cacheflush_64.h b/arch/sparc/include/asm/cacheflush_64.h new file mode 100644 index 0000000000..0e879004ef --- /dev/null +++ b/arch/sparc/include/asm/cacheflush_64.h @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _SPARC64_CACHEFLUSH_H +#define _SPARC64_CACHEFLUSH_H + +#include + +#ifndef __ASSEMBLY__ + +#include + +/* Cache flush operations. */ +#define flushw_all() __asm__ __volatile__("flushw") + +void __flushw_user(void); +#define flushw_user() __flushw_user() + +#define flush_user_windows flushw_user +#define flush_register_windows flushw_all + +/* These are the same regardless of whether this is an SMP kernel or not. */ +#define flush_cache_mm(__mm) \ + do { if ((__mm) == current->mm) flushw_user(); } while(0) +#define flush_cache_dup_mm(mm) flush_cache_mm(mm) +#define flush_cache_range(vma, start, end) \ + flush_cache_mm((vma)->vm_mm) +#define flush_cache_page(vma, page, pfn) \ + flush_cache_mm((vma)->vm_mm) + +/* + * On spitfire, the icache doesn't snoop local stores and we don't + * use block commit stores (which invalidate icache lines) during + * module load, so we need this. + */ +void flush_icache_range(unsigned long start, unsigned long end); +void __flush_icache_page(unsigned long); + +void __flush_dcache_page(void *addr, int flush_icache); +void flush_dcache_folio_impl(struct folio *folio); +#ifdef CONFIG_SMP +void smp_flush_dcache_folio_impl(struct folio *folio, int cpu); +void flush_dcache_folio_all(struct mm_struct *mm, struct folio *folio); +#else +#define smp_flush_dcache_folio_impl(folio, cpu) flush_dcache_folio_impl(folio) +#define flush_dcache_folio_all(mm, folio) flush_dcache_folio_impl(folio) +#endif + +void __flush_dcache_range(unsigned long start, unsigned long end); +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 +void flush_dcache_folio(struct folio *folio); +#define flush_dcache_folio flush_dcache_folio +static inline void flush_dcache_page(struct page *page) +{ + flush_dcache_folio(page_folio(page)); +} + +void flush_ptrace_access(struct vm_area_struct *, struct page *, + unsigned long uaddr, void *kaddr, + unsigned long len, int write); + +#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ + do { \ + flush_cache_page(vma, vaddr, page_to_pfn(page)); \ + memcpy(dst, src, len); \ + flush_ptrace_access(vma, page, vaddr, src, len, 0); \ + } while (0) + +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ + do { \ + flush_cache_page(vma, vaddr, page_to_pfn(page)); \ + memcpy(dst, src, len); \ + flush_ptrace_access(vma, page, vaddr, dst, len, 1); \ + } while (0) + +#define flush_dcache_mmap_lock(mapping) do { } while (0) +#define flush_dcache_mmap_unlock(mapping) do { } while (0) + +#define flush_cache_vmap(start, end) do { } while (0) +#define flush_cache_vunmap(start, end) do { } while (0) + +#endif /* !__ASSEMBLY__ */ + +#endif /* _SPARC64_CACHEFLUSH_H */ -- cgit v1.2.3