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authorYoshinori Sato <ysato@users.sourceforge.jp>2008-08-04 16:33:47 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-08-04 16:33:47 +0900
commitcce2d453e4940d3fccd42a6917d01027148e11c3 (patch)
treebf921bfd41e4a40e513a1994d474e03f44089c0e /arch/sh/include/cpu-sh2a
parent1af446edfe3239b2b731f3458b3c285c397464cc (diff)
SH2(A) cache update
Includes: - SH2 (7619) Writeback support. - SH2A cache handling fix. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include/cpu-sh2a')
-rw-r--r--arch/sh/include/cpu-sh2a/cpu/cache.h3
-rw-r--r--arch/sh/include/cpu-sh2a/cpu/cacheflush.h34
2 files changed, 37 insertions, 0 deletions
diff --git a/arch/sh/include/cpu-sh2a/cpu/cache.h b/arch/sh/include/cpu-sh2a/cpu/cache.h
index afe228b3f49..defb0baa5a0 100644
--- a/arch/sh/include/cpu-sh2a/cpu/cache.h
+++ b/arch/sh/include/cpu-sh2a/cpu/cache.h
@@ -36,5 +36,8 @@
#define CCR_CACHE_ENABLE (CCR_CACHE_OCE | CCR_CACHE_ICE)
#define CCR_CACHE_INVALIDATE (CCR_CACHE_OCI | CCR_CACHE_ICI)
+#define CCR_ICACHE_INVALIDATE CCR_CACHE_ICI
+#define CCR_OCACHE_INVALIDATE CCR_CACHE_OCI
+#define CACHE_PHYSADDR_MASK 0x1ffffc00
#endif /* __ASM_CPU_SH2A_CACHE_H */
diff --git a/arch/sh/include/cpu-sh2a/cpu/cacheflush.h b/arch/sh/include/cpu-sh2a/cpu/cacheflush.h
new file mode 100644
index 00000000000..3d3b9205d2a
--- /dev/null
+++ b/arch/sh/include/cpu-sh2a/cpu/cacheflush.h
@@ -0,0 +1,34 @@
+#ifndef __ASM_CPU_SH2A_CACHEFLUSH_H
+#define __ASM_CPU_SH2A_CACHEFLUSH_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_page(pg) flushes(wback&invalidates) a page for dcache
+ * - flush_icache_range(start, end) flushes(invalidates) a range for icache
+ * - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
+ *
+ * Caches are indexed (effectively) by physical address on SH-2, so
+ * we don't need them.
+ */
+#define flush_cache_all() do { } while (0)
+#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, pfn) do { } while (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)
+void flush_icache_range(unsigned long start, unsigned long end);
+#define flush_icache_page(vma,pg) do { } while (0)
+#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
+#define flush_cache_sigtramp(vaddr) do { } while (0)
+
+#define p3_cache_init() do { } while (0)
+#endif /* __ASM_CPU_SH2A_CACHEFLUSH_H */