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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/m68k/include/asm/cacheflush_no.h
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/m68k/include/asm/cacheflush_no.h')
-rw-r--r--kernel/arch/m68k/include/asm/cacheflush_no.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/kernel/arch/m68k/include/asm/cacheflush_no.h b/kernel/arch/m68k/include/asm/cacheflush_no.h
new file mode 100644
index 000000000..d2b3935ae
--- /dev/null
+++ b/kernel/arch/m68k/include/asm/cacheflush_no.h
@@ -0,0 +1,100 @@
+#ifndef _M68KNOMMU_CACHEFLUSH_H
+#define _M68KNOMMU_CACHEFLUSH_H
+
+/*
+ * (C) Copyright 2000-2010, Greg Ungerer <gerg@snapgear.com>
+ */
+#include <linux/mm.h>
+#include <asm/mcfsim.h>
+
+#define flush_cache_all() __flush_cache_all()
+#define flush_cache_mm(mm) do { } while (0)
+#define flush_cache_dup_mm(mm) do { } while (0)
+#define flush_cache_range(vma, start, end) do { } while (0)
+#define flush_cache_page(vma, vmaddr) do { } while (0)
+#define flush_dcache_range(start, len) __flush_dcache_all()
+#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
+#define flush_dcache_page(page) do { } while (0)
+#define flush_dcache_mmap_lock(mapping) do { } while (0)
+#define flush_dcache_mmap_unlock(mapping) do { } while (0)
+#define flush_icache_range(start, len) __flush_icache_all()
+#define flush_icache_page(vma,pg) do { } while (0)
+#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
+#define flush_cache_vmap(start, end) do { } while (0)
+#define flush_cache_vunmap(start, end) do { } while (0)
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
+ memcpy(dst, src, len)
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+ memcpy(dst, src, len)
+
+void mcf_cache_push(void);
+
+static inline void __clear_cache_all(void)
+{
+#ifdef CACHE_INVALIDATE
+ __asm__ __volatile__ (
+ "movec %0, %%CACR\n\t"
+ "nop\n\t"
+ : : "r" (CACHE_INVALIDATE) );
+#endif
+}
+
+static inline void __flush_cache_all(void)
+{
+#ifdef CACHE_PUSH
+ mcf_cache_push();
+#endif
+ __clear_cache_all();
+}
+
+/*
+ * Some ColdFire parts implement separate instruction and data caches,
+ * on those we should just flush the appropriate cache. If we don't need
+ * to do any specific flushing then this will be optimized away.
+ */
+static inline void __flush_icache_all(void)
+{
+#ifdef CACHE_INVALIDATEI
+ __asm__ __volatile__ (
+ "movec %0, %%CACR\n\t"
+ "nop\n\t"
+ : : "r" (CACHE_INVALIDATEI) );
+#endif
+}
+
+static inline void __flush_dcache_all(void)
+{
+#ifdef CACHE_PUSH
+ mcf_cache_push();
+#endif
+#ifdef CACHE_INVALIDATED
+ __asm__ __volatile__ (
+ "movec %0, %%CACR\n\t"
+ "nop\n\t"
+ : : "r" (CACHE_INVALIDATED) );
+#else
+ /* Flush the write buffer */
+ __asm__ __volatile__ ( "nop" );
+#endif
+}
+
+/*
+ * Push cache entries at supplied address. We want to write back any dirty
+ * data and then invalidate the cache lines associated with this address.
+ */
+static inline void cache_push(unsigned long paddr, int len)
+{
+ __flush_cache_all();
+}
+
+/*
+ * Clear cache entries at supplied address (that is don't write back any
+ * dirty data).
+ */
+static inline void cache_clear(unsigned long paddr, int len)
+{
+ __clear_cache_all();
+}
+
+#endif /* _M68KNOMMU_CACHEFLUSH_H */