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authorCatalin Marinas <catalin.marinas@arm.com>2007-02-05 14:48:08 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-02-08 14:49:40 +0000
commit953233dc9958ba2b29753d0f24e37a33a076a5f6 (patch)
treeb9cc9ddc82722dc79a72a8c6f4977566ec2e0384 /include
parent7f8e33546d17c7d8849be3a6623c3b6b3c9b588b (diff)
[ARM] 4134/1: Add generic support for outer caches
The outer cache can be L2 as on RealView/EB MPCore platform or even L3 or further on ARMv7 cores. This patch adds the generic support for flushing the outer cache in the DMA operations. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include')
-rw-r--r--include/asm-arm/cacheflush.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h
index 5f531ea0305..ce60b3702ba 100644
--- a/include/asm-arm/cacheflush.h
+++ b/include/asm-arm/cacheflush.h
@@ -190,6 +190,12 @@ struct cpu_cache_fns {
void (*dma_flush_range)(unsigned long, unsigned long);
};
+struct outer_cache_fns {
+ void (*inv_range)(unsigned long, unsigned long);
+ void (*clean_range)(unsigned long, unsigned long);
+ void (*flush_range)(unsigned long, unsigned long);
+};
+
/*
* Select the calling method
*/
@@ -246,6 +252,37 @@ extern void dmac_flush_range(unsigned long, unsigned long);
#endif
+#ifdef CONFIG_OUTER_CACHE
+
+extern struct outer_cache_fns outer_cache;
+
+static inline void outer_inv_range(unsigned long start, unsigned long end)
+{
+ if (outer_cache.inv_range)
+ outer_cache.inv_range(start, end);
+}
+static inline void outer_clean_range(unsigned long start, unsigned long end)
+{
+ if (outer_cache.clean_range)
+ outer_cache.clean_range(start, end);
+}
+static inline void outer_flush_range(unsigned long start, unsigned long end)
+{
+ if (outer_cache.flush_range)
+ outer_cache.flush_range(start, end);
+}
+
+#else
+
+static inline void outer_inv_range(unsigned long start, unsigned long end)
+{ }
+static inline void outer_clean_range(unsigned long start, unsigned long end)
+{ }
+static inline void outer_flush_range(unsigned long start, unsigned long end)
+{ }
+
+#endif
+
/*
* flush_cache_vmap() is used when creating mappings (eg, via vmap,
* vmalloc, ioremap etc) in kernel space for pages. Since the