From 37134cd55d57e95d3f606c6f2a57fa496bdad333 Mon Sep 17 00:00:00 2001
From: Kevin Hilman <kevin@hilman.org>
Date: Thu, 12 Jan 2006 16:12:21 +0000
Subject: [ARM] 3209/1: Configurable DMA-consistent memory region

Patch from Kevin Hilman

This patch increase available DMA-consistent memory allocated by dma_coherent_alloc(). The default remains at 2M (defined in asm/memory.h) and each platform has the ability to override in asm/arch-foo/memory.h.

Signed-off-by: Kevin Hilman <kevin@hilman.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 include/asm-arm/memory.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'include/asm-arm/memory.h')

diff --git a/include/asm-arm/memory.h b/include/asm-arm/memory.h
index 3d7f08bd9030..b4e1146ab682 100644
--- a/include/asm-arm/memory.h
+++ b/include/asm-arm/memory.h
@@ -25,6 +25,7 @@
 #include <linux/config.h>
 #include <linux/compiler.h>
 #include <asm/arch/memory.h>
+#include <asm/sizes.h>
 
 #ifndef TASK_SIZE
 /*
@@ -47,6 +48,14 @@
 #define PAGE_OFFSET		UL(0xc0000000)
 #endif
 
+/*
+ * Size of DMA-consistent memory region.  Must be multiple of 2M,
+ * between 2MB and 14MB inclusive.
+ */
+#ifndef CONSISTENT_DMA_SIZE
+#define CONSISTENT_DMA_SIZE SZ_2M
+#endif
+
 /*
  * Physical vs virtual RAM address space conversion.  These are
  * private definitions which should NOT be used outside memory.h
-- 
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