summaryrefslogtreecommitdiff
path: root/include/asm-arm/arch-shark/memory.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/arch-shark/memory.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-arm/arch-shark/memory.h')
-rw-r--r--include/asm-arm/arch-shark/memory.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/include/asm-arm/arch-shark/memory.h b/include/asm-arm/arch-shark/memory.h
new file mode 100644
index 000000000000..8ff956d25463
--- /dev/null
+++ b/include/asm-arm/arch-shark/memory.h
@@ -0,0 +1,42 @@
+/*
+ * linux/include/asm-arm/arch-shark/memory.h
+ *
+ * by Alexander Schulz
+ *
+ * derived from:
+ * linux/include/asm-arm/arch-ebsa110/memory.h
+ * Copyright (c) 1996-1999 Russell King.
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <asm/sizes.h>
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET (0x08000000UL)
+
+#ifndef __ASSEMBLY__
+
+static inline void __arch_adjust_zones(int node, unsigned long *zone_size, unsigned long *zhole_size)
+{
+ if (node != 0) return;
+ /* Only the first 4 MB (=1024 Pages) are usable for DMA */
+ zone_size[1] = zone_size[0] - 1024;
+ zone_size[0] = 1024;
+ zhole_size[1] = zhole_size[0];
+ zhole_size[0] = 0;
+}
+
+#define arch_adjust_zones(node, size, holes) \
+ __arch_adjust_zones(node, size, holes)
+
+#define ISA_DMA_THRESHOLD (PHYS_OFFSET + SZ_4M - 1)
+
+#endif
+
+#define __virt_to_bus(x) __virt_to_phys(x)
+#define __bus_to_virt(x) __phys_to_virt(x)
+
+#endif