Linux-2.6.12-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!
diff --git a/include/asm-arm/arch-pxa/memory.h b/include/asm-arm/arch-pxa/memory.h
new file mode 100644
index 0000000..217a80b
--- /dev/null
+++ b/include/asm-arm/arch-pxa/memory.h
@@ -0,0 +1,76 @@
+/*
+ * linux/include/asm-arm/arch-pxa/memory.h
+ *
+ * Author: Nicolas Pitre
+ * Copyright: (C) 2001 MontaVista Software Inc.
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET (0xa0000000UL)
+
+/*
+ * 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
+/*
+ * The nodes are matched with the physical SDRAM banks as follows:
+ *
+ * node 0: 0xa0000000-0xa3ffffff --> 0xc0000000-0xc3ffffff
+ * node 1: 0xa4000000-0xa7ffffff --> 0xc4000000-0xc7ffffff
+ * node 2: 0xa8000000-0xabffffff --> 0xc8000000-0xcbffffff
+ * node 3: 0xac000000-0xafffffff --> 0xcc000000-0xcfffffff
+ */
+
+/*
+ * Given a kernel address, find the home node of the underlying memory.
+ */
+#define KVADDR_TO_NID(addr) (((unsigned long)(addr) - PAGE_OFFSET) >> 26)
+
+/*
+ * Given a page frame number, convert it to a node id.
+ */
+#define PFN_TO_NID(pfn) (((pfn) - PHYS_PFN_OFFSET) >> (26 - PAGE_SHIFT))
+
+/*
+ * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
+ * and returns the mem_map of that node.
+ */
+#define ADDR_TO_MAPBASE(kaddr) NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
+
+/*
+ * Given a page frame number, find the owning node of the memory
+ * and returns the mem_map of that node.
+ */
+#define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn))
+
+/*
+ * 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.
+ */
+#define LOCAL_MAP_NR(addr) \
+ (((unsigned long)(addr) & 0x03ffffff) >> PAGE_SHIFT)
+
+#else
+
+#define PFN_TO_NID(addr) (0)
+
+#endif
+
+#endif