patch-2.2.8 linux/include/asm-arm/arch-nexuspci/memory.h

• Lines: 38
• Date: Sat May 8 11:06:57 1999
• Orig file: v2.2.7/linux/include/asm-arm/arch-nexuspci/memory.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.7/linux/include/asm-arm/arch-nexuspci/memory.h linux/include/asm-arm/arch-nexuspci/memory.h
@@ -0,0 +1,37 @@
+/*
+ * linux/include/asm-arm/arch-nexuspci/memory.h
+ *
+ * Copyright (c) 1997, 1998 Philip Blundell.
+ * Copyright (c) 1999 Russell King
+ *
+ */
+#ifndef __ASM_ARCH_MMU_H
+#define __ASM_ARCH_MMU_H
+
+/*
+ * Task size: 3GB
+ */
+#define TASK_SIZE	(0xc0000000UL)
+
+/*
+ * Page offset: 3GB
+ */
+#define PAGE_OFFSET	(0xc0000000UL)
+
+/*
+ * On NexusPCI, the DRAM is contiguous
+ */
+#define __virt_to_phys(vpage) ((vpage) - PAGE_OFFSET + 0x40000000)
+#define __phys_to_virt(ppage) ((ppage) + PAGE_OFFSET - 0x40000000)
+#define __virt_to_phys__is_a_macro
+#define __phys_to_virt__is_a_macro
+
+/*
+ * On the PCI bus the DRAM appears at address 0
+ */
+#define __virt_to_bus__is_a_macro
+#define __virt_to_bus(x) ((x) - PAGE_OFFSET)
+#define __bus_to_virt__is_a_macro
+#define __bus_to_virt(x) ((x) + PAGE_OFFSET)
+
+#endif