1 files changed, 98 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h
new file mode 100644
index 000000000..b247575c5
--- /dev/null
+++ b/arch/mips/include/asm/mach-generic/spaces.h
@@ -0,0 +1,98 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle
+ * Copyright (C) 2000, 2002  Maciej W. Rozycki
+ * Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc.
+ */
+#ifndef _ASM_MACH_GENERIC_SPACES_H
+#define _ASM_MACH_GENERIC_SPACES_H
+
+#include <linux/const.h>
+
+#include <asm/mipsregs.h>
+
+#ifndef IO_SPACE_LIMIT
+#define IO_SPACE_LIMIT 0xffff
+#endif
+
+/*
+ * This gives the physical RAM offset.
+ */
+#ifndef __ASSEMBLY__
+# if defined(CONFIG_MIPS_AUTO_PFN_OFFSET)
+#  define PHYS_OFFSET		((unsigned long)PFN_PHYS(ARCH_PFN_OFFSET))
+# elif !defined(PHYS_OFFSET)
+#  define PHYS_OFFSET		_AC(0, UL)
+# endif
+#endif /* __ASSEMBLY__ */
+
+#ifdef CONFIG_32BIT
+#define CAC_BASE		_AC(0x80000000, UL)
+#ifndef IO_BASE
+#define IO_BASE			_AC(0xa0000000, UL)
+#endif
+#ifndef UNCAC_BASE
+#define UNCAC_BASE		_AC(0xa0000000, UL)
+#endif
+
+#ifndef MAP_BASE
+#define MAP_BASE		_AC(0xc0000000, UL)
+#endif
+
+/*
+ * Memory above this physical address will be considered highmem.
+ */
+#ifndef HIGHMEM_START
+#define HIGHMEM_START		_AC(0x20000000, UL)
+#endif
+
+#endif /* CONFIG_32BIT */
+
+#ifdef CONFIG_64BIT
+
+#ifndef CAC_BASE
+#define CAC_BASE	PHYS_TO_XKPHYS(read_c0_config() & CONF_CM_CMASK, 0)
+#endif
+
+#ifndef IO_BASE
+#define IO_BASE			_AC(0x9000000000000000, UL)
+#endif
+
+#ifndef UNCAC_BASE
+#define UNCAC_BASE		_AC(0x9000000000000000, UL)
+#endif
+
+#ifndef MAP_BASE
+#define MAP_BASE		_AC(0xc000000000000000, UL)
+#endif
+
+/*
+ * Memory above this physical address will be considered highmem.
+ * Fixme: 59 bits is a fictive number and makes assumptions about processors
+ * in the distant future.  Nobody will care for a few years :-)
+ */
+#ifndef HIGHMEM_START
+#define HIGHMEM_START		(_AC(1, UL) << _AC(59, UL))
+#endif
+
+#define TO_PHYS(x)		(	      ((x) & TO_PHYS_MASK))
+#define TO_CAC(x)		(CAC_BASE   | ((x) & TO_PHYS_MASK))
+#define TO_UNCAC(x)		(UNCAC_BASE | ((x) & TO_PHYS_MASK))
+
+#endif /* CONFIG_64BIT */
+
+/*
+ * This handles the memory map.
+ */
+#ifndef PAGE_OFFSET
+#define PAGE_OFFSET		(CAC_BASE + PHYS_OFFSET)
+#endif
+
+#ifndef FIXADDR_TOP
+#define FIXADDR_TOP		((unsigned long)(long)(int)0xfffe0000)
+#endif
+
+#endif /* __ASM_MACH_GENERIC_SPACES_H */