From: 黄涛 <huangtao@rock-chips.com>
Date: Sat, 2 Jul 2011 10:23:18 +0000 (+0800)
Subject: rk29: memory.h: fix for 1G memory, limit DMA zone only 512MB
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=38d52487ad6e717faf3a928e082b349cba76c058;p=firefly-linux-kernel-4.4.55.git

rk29: memory.h: fix for 1G memory, limit DMA zone only 512MB
---

diff --git a/arch/arm/mach-rk29/include/mach/memory.h b/arch/arm/mach-rk29/include/mach/memory.h
index d9f2d2c03c52..da68f41527c7 100644
--- a/arch/arm/mach-rk29/include/mach/memory.h
+++ b/arch/arm/mach-rk29/include/mach/memory.h
@@ -16,11 +16,35 @@
 #ifndef __ASM_ARCH_RK29_MEMORY_H
 #define __ASM_ARCH_RK29_MEMORY_H
 
+#include <asm/page.h>
+#include <asm/sizes.h>
+
 /* physical offset of RAM */
 #define PHYS_OFFSET		UL(0x60000000)
 
 #define CONSISTENT_DMA_SIZE	SZ_8M
 
+#if !defined(__ASSEMBLY__) && defined(CONFIG_ZONE_DMA)
+
+static inline void
+__arch_adjust_zones(int node, unsigned long *zone_size, unsigned long *zhole_size)
+{
+	unsigned long dma_size = SZ_512M >> PAGE_SHIFT;
+
+	if (node || (zone_size[0] <= dma_size))
+		return;
+
+	zone_size[1] = zone_size[0] - dma_size;
+	zone_size[0] = dma_size;
+	zhole_size[1] = zhole_size[0];
+	zhole_size[0] = 0;
+}
+
+#define arch_adjust_zones(node, zone_size, zhole_size) \
+	__arch_adjust_zones(node, zone_size, zhole_size)
+
+#endif /* CONFIG_ZONE_DMA */
+
 /*
  * SRAM memory whereabouts
  */