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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/sh/include/asm/cacheflush.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/sh/include/asm/cacheflush.h')
-rw-r--r--arch/sh/include/asm/cacheflush.h113
1 files changed, 113 insertions, 0 deletions
diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h
new file mode 100644
index 0000000000..878b6b551b
--- /dev/null
+++ b/arch/sh/include/asm/cacheflush.h
@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_SH_CACHEFLUSH_H
+#define __ASM_SH_CACHEFLUSH_H
+
+#include <linux/mm.h>
+
+/*
+ * Cache flushing:
+ *
+ * - flush_cache_all() flushes entire cache
+ * - flush_cache_mm(mm) flushes the specified mm context's cache lines
+ * - flush_cache_dup mm(mm) handles cache flushing when forking
+ * - flush_cache_page(mm, vmaddr, pfn) flushes a single page
+ * - flush_cache_range(vma, start, end) flushes a range of pages
+ *
+ * - flush_dcache_folio(folio) flushes(wback&invalidates) a folio for dcache
+ * - flush_icache_range(start, end) flushes(invalidates) a range for icache
+ * - flush_icache_pages(vma, pg, nr) flushes(invalidates) pages for icache
+ * - flush_cache_sigtramp(vaddr) flushes the signal trampoline
+ */
+extern void (*local_flush_cache_all)(void *args);
+extern void (*local_flush_cache_mm)(void *args);
+extern void (*local_flush_cache_dup_mm)(void *args);
+extern void (*local_flush_cache_page)(void *args);
+extern void (*local_flush_cache_range)(void *args);
+extern void (*local_flush_dcache_folio)(void *args);
+extern void (*local_flush_icache_range)(void *args);
+extern void (*local_flush_icache_folio)(void *args);
+extern void (*local_flush_cache_sigtramp)(void *args);
+
+static inline void cache_noop(void *args) { }
+
+extern void (*__flush_wback_region)(void *start, int size);
+extern void (*__flush_purge_region)(void *start, int size);
+extern void (*__flush_invalidate_region)(void *start, int size);
+
+extern void flush_cache_all(void);
+extern void flush_cache_mm(struct mm_struct *mm);
+extern void flush_cache_dup_mm(struct mm_struct *mm);
+extern void flush_cache_page(struct vm_area_struct *vma,
+ unsigned long addr, unsigned long pfn);
+extern void flush_cache_range(struct vm_area_struct *vma,
+ 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));
+}
+
+extern void flush_icache_range(unsigned long start, unsigned long end);
+#define flush_icache_user_range flush_icache_range
+void flush_icache_pages(struct vm_area_struct *vma, struct page *page,
+ unsigned int nr);
+#define flush_icache_pages flush_icache_pages
+extern void flush_cache_sigtramp(unsigned long address);
+
+struct flusher_data {
+ struct vm_area_struct *vma;
+ unsigned long addr1, addr2;
+};
+
+#define ARCH_HAS_FLUSH_ANON_PAGE
+extern void __flush_anon_page(struct page *page, unsigned long);
+
+static inline void flush_anon_page(struct vm_area_struct *vma,
+ struct page *page, unsigned long vmaddr)
+{
+ if (boot_cpu_data.dcache.n_aliases && PageAnon(page))
+ __flush_anon_page(page, vmaddr);
+}
+
+#define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1
+static inline void flush_kernel_vmap_range(void *addr, int size)
+{
+ __flush_wback_region(addr, size);
+}
+static inline void invalidate_kernel_vmap_range(void *addr, int size)
+{
+ __flush_invalidate_region(addr, size);
+}
+
+extern void copy_to_user_page(struct vm_area_struct *vma,
+ struct page *page, unsigned long vaddr, void *dst, const void *src,
+ unsigned long len);
+
+extern void copy_from_user_page(struct vm_area_struct *vma,
+ struct page *page, unsigned long vaddr, void *dst, const void *src,
+ unsigned long len);
+
+#define flush_cache_vmap(start, end) local_flush_cache_all(NULL)
+#define flush_cache_vunmap(start, end) local_flush_cache_all(NULL)
+
+#define flush_dcache_mmap_lock(mapping) do { } while (0)
+#define flush_dcache_mmap_unlock(mapping) do { } while (0)
+
+void kmap_coherent_init(void);
+void *kmap_coherent(struct page *page, unsigned long addr);
+void kunmap_coherent(void *kvaddr);
+
+#define PG_dcache_clean PG_arch_1
+
+void cpu_cache_init(void);
+
+static inline void *sh_cacheop_vaddr(void *vaddr)
+{
+ if (__in_29bit_mode())
+ vaddr = (void *)CAC_ADDR((unsigned long)vaddr);
+ return vaddr;
+}
+
+#endif /* __ASM_SH_CACHEFLUSH_H */