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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-08-05 19:14:15 +0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-08-07 12:55:48 +0400
commita09e64fbc0094e3073dbb09c3b4bfe4ab669244b (patch)
tree69689f467179891b498bd7423fcf61925173db31 /arch/arm/mach-lh7a40x/include/mach/memory.h
parenta1b81a84fff05dbfef45b7012c26e1fee9973e5d (diff)
downloadlinux-a09e64fbc0094e3073dbb09c3b4bfe4ab669244b.tar.xz
[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-lh7a40x/include/mach/memory.h')
-rw-r--r--arch/arm/mach-lh7a40x/include/mach/memory.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/arm/mach-lh7a40x/include/mach/memory.h b/arch/arm/mach-lh7a40x/include/mach/memory.h
new file mode 100644
index 000000000000..f7107b4c197a
--- /dev/null
+++ b/arch/arm/mach-lh7a40x/include/mach/memory.h
@@ -0,0 +1,76 @@
+/* arch/arm/mach-lh7a40x/include/mach/memory.h
+ *
+ * Copyright (C) 2004 Coastal Environmental Systems
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ *
+ * Refer to <file:Documentation/arm/Sharp-LH/SDRAM> for more information.
+ *
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET UL(0xc0000000)
+
+/*
+ * Virtual view <-> DMA view memory address translations
+ * virt_to_bus: Used to translate the virtual address to an
+ * address suitable to be passed to set_dma_addr
+ * bus_to_virt: Used to convert an address for DMA operations
+ * to an address that the kernel can use.
+ */
+#define __virt_to_bus(x) __virt_to_phys(x)
+#define __bus_to_virt(x) __phys_to_virt(x)
+
+#ifdef CONFIG_DISCONTIGMEM
+
+/*
+ * Given a kernel address, find the home node of the underlying memory.
+ */
+
+# ifdef CONFIG_LH7A40X_ONE_BANK_PER_NODE
+# define KVADDR_TO_NID(addr) \
+ ( ((((unsigned long) (addr) - PAGE_OFFSET) >> 24) & 1)\
+ | ((((unsigned long) (addr) - PAGE_OFFSET) >> 25) & ~1))
+# else /* 2 banks per node */
+# define KVADDR_TO_NID(addr) \
+ (((unsigned long) (addr) - PAGE_OFFSET) >> 26)
+# endif
+
+/*
+ * Given a page frame number, convert it to a node id.
+ */
+
+# ifdef CONFIG_LH7A40X_ONE_BANK_PER_NODE
+# define PFN_TO_NID(pfn) \
+ (((((pfn) - PHYS_PFN_OFFSET) >> (24 - PAGE_SHIFT)) & 1)\
+ | ((((pfn) - PHYS_PFN_OFFSET) >> (25 - PAGE_SHIFT)) & ~1))
+# else /* 2 banks per node */
+# define PFN_TO_NID(pfn) \
+ (((pfn) - PHYS_PFN_OFFSET) >> (26 - PAGE_SHIFT))
+#endif
+
+/*
+ * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
+ * and returns the index corresponding to the appropriate page in the
+ * node's mem_map.
+ */
+
+# ifdef CONFIG_LH7A40X_ONE_BANK_PER_NODE
+# define LOCAL_MAP_NR(addr) \
+ (((unsigned long)(addr) & 0x003fffff) >> PAGE_SHIFT)
+# else /* 2 banks per node */
+# define LOCAL_MAP_NR(addr) \
+ (((unsigned long)(addr) & 0x01ffffff) >> PAGE_SHIFT)
+# endif
+
+#endif
+
+#endif