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-rw-r--r--arch/mips/include/asm/mach-generic/spaces.h8
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h
index afc96ecb9004..952b0fdfda0e 100644
--- a/arch/mips/include/asm/mach-generic/spaces.h
+++ b/arch/mips/include/asm/mach-generic/spaces.h
@@ -12,6 +12,8 @@
#include <linux/const.h>
+#include <asm/mipsregs.h>
+
/*
* This gives the physical RAM offset.
*/
@@ -52,11 +54,7 @@
#ifdef CONFIG_64BIT
#ifndef CAC_BASE
-#ifdef CONFIG_DMA_NONCOHERENT
-#define CAC_BASE _AC(0x9800000000000000, UL)
-#else
-#define CAC_BASE _AC(0xa800000000000000, UL)
-#endif
+#define CAC_BASE PHYS_TO_XKPHYS(read_c0_config() & CONF_CM_CMASK, 0)
#endif
#ifndef IO_BASE