summaryrefslogtreecommitdiffstats
path: root/arch/parisc/include/asm/cacheflush.h
diff options
context:
space:
mode:
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/parisc/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/parisc/include/asm/cacheflush.h')
-rw-r--r--arch/parisc/include/asm/cacheflush.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h
new file mode 100644
index 0000000000..b4006f2a97
--- /dev/null
+++ b/arch/parisc/include/asm/cacheflush.h
@@ -0,0 +1,92 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _PARISC_CACHEFLUSH_H
+#define _PARISC_CACHEFLUSH_H
+
+#include <linux/mm.h>
+#include <linux/uaccess.h>
+#include <asm/tlbflush.h>
+
+/* The usual comment is "Caches aren't brain-dead on the <architecture>".
+ * Unfortunately, that doesn't apply to PA-RISC. */
+
+#include <linux/jump_label.h>
+
+DECLARE_STATIC_KEY_TRUE(parisc_has_cache);
+DECLARE_STATIC_KEY_TRUE(parisc_has_dcache);
+DECLARE_STATIC_KEY_TRUE(parisc_has_icache);
+
+#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
+
+void flush_user_icache_range_asm(unsigned long, unsigned long);
+void flush_kernel_icache_range_asm(unsigned long, unsigned long);
+void flush_user_dcache_range_asm(unsigned long, unsigned long);
+void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
+void purge_kernel_dcache_range_asm(unsigned long, unsigned long);
+void flush_kernel_dcache_page_asm(const void *addr);
+void flush_kernel_icache_page(void *);
+
+/* Cache flush operations */
+
+void flush_cache_all_local(void);
+void flush_cache_all(void);
+void flush_cache_mm(struct mm_struct *mm);
+
+void flush_kernel_dcache_page_addr(const void *addr);
+
+#define flush_kernel_dcache_range(start,size) \
+ flush_kernel_dcache_range_asm((start), (start)+(size));
+
+#define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1
+void flush_kernel_vmap_range(void *vaddr, int size);
+void invalidate_kernel_vmap_range(void *vaddr, int size);
+
+#define flush_cache_vmap(start, end) flush_cache_all()
+#define flush_cache_vunmap(start, end) flush_cache_all()
+
+void flush_dcache_folio(struct folio *folio);
+#define flush_dcache_folio flush_dcache_folio
+#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
+static inline void flush_dcache_page(struct page *page)
+{
+ flush_dcache_folio(page_folio(page));
+}
+
+#define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages)
+#define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages)
+#define flush_dcache_mmap_lock_irqsave(mapping, flags) \
+ xa_lock_irqsave(&mapping->i_pages, flags)
+#define flush_dcache_mmap_unlock_irqrestore(mapping, flags) \
+ xa_unlock_irqrestore(&mapping->i_pages, flags)
+
+void flush_icache_pages(struct vm_area_struct *vma, struct page *page,
+ unsigned int nr);
+#define flush_icache_pages flush_icache_pages
+
+#define flush_icache_range(s,e) do { \
+ flush_kernel_dcache_range_asm(s,e); \
+ flush_kernel_icache_range_asm(s,e); \
+} while (0)
+
+void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
+ unsigned long user_vaddr, void *dst, void *src, int len);
+void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
+ unsigned long user_vaddr, void *dst, void *src, int len);
+void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
+ unsigned long pfn);
+void flush_cache_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end);
+
+/* defined in pacache.S exported in cache.c used by flush_anon_page */
+void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr);
+
+#define ARCH_HAS_FLUSH_ANON_PAGE
+void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr);
+
+#define ARCH_HAS_FLUSH_ON_KUNMAP
+static inline void kunmap_flush_on_unmap(const void *addr)
+{
+ flush_kernel_dcache_page_addr(addr);
+}
+
+#endif /* _PARISC_CACHEFLUSH_H */
+