patch-2.2.8 linux/include/asm-arm/arch-ebsa285/memory.h

• Lines: 75
• Date: Mon May 10 10:17:28 1999
• Orig file: v2.2.7/linux/include/asm-arm/arch-ebsa285/memory.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.7/linux/include/asm-arm/arch-ebsa285/memory.h linux/include/asm-arm/arch-ebsa285/memory.h
@@ -0,0 +1,74 @@
+/*
+ * linux/include/asm-arm/arch-ebsa285/memory.h
+ *
+ * Copyright (c) 1996-1999 Russell King.
+ *
+ * Changelog:
+ *  20-Oct-1996	RMK	Created
+ *  31-Dec-1997	RMK	Fixed definitions to reduce warnings.
+ *  17-May-1998	DAG	Added __virt_to_bus and __bus_to_virt functions.
+ *  21-Nov-1998	RMK	Changed __virt_to_bus and __bus_to_virt to macros.
+ *  21-Mar-1999	RMK	Added PAGE_OFFSET for co285 architecture.
+ *			Renamed to memory.h
+ *			Moved PAGE_OFFSET and TASK_SIZE here
+ */
+#ifndef __ASM_ARCH_MMU_H
+#define __ASM_ARCH_MMU_H
+
+#include <linux/config.h>
+
+#if defined(CONFIG_HOST_FOOTBRIDGE)
+
+/*
+ * Task size: 3GB
+ */
+#define TASK_SIZE		(0xc0000000UL)
+
+/*
+ * Page offset: 3GB
+ */
+#define PAGE_OFFSET		(0xc0000000UL)
+
+#define __virt_to_bus__is_a_macro
+#define __virt_to_bus(x)	((x) - 0xe0000000)
+#define __bus_to_virt__is_a_macro
+#define __bus_to_virt(x)	((x) + 0xe0000000)
+
+#elif defined(CONFIG_ADDIN_FOOTBRIDGE)
+
+#if defined(CONFIG_ARCH_CO285)
+
+/*
+ * Task size: 1.5GB
+ */
+#define TASK_SIZE		(0x60000000UL)
+
+/*
+ * Page offset: 1.5GB
+ */
+#define PAGE_OFFSET		(0x60000000UL)
+
+#else
+
+#error Add in your architecture here
+
+#endif
+
+#ifndef __ASSEMBLY__
+extern unsigned long __virt_to_bus(unsigned long);
+extern unsigned long __bus_to_virt(unsigned long);
+#endif
+
+#endif
+
+/*
+ * On Footbridge machines, the dram is contiguous.
+ * On Host Footbridge, these conversions are constant.
+ * On an add-in footbridge, these depend on register settings.
+ */
+#define __virt_to_phys__is_a_macro
+#define __virt_to_phys(vpage) ((unsigned long)(vpage) - PAGE_OFFSET)
+#define __phys_to_virt__is_a_macro
+#define __phys_to_virt(ppage) ((unsigned long)(ppage) + PAGE_OFFSET)
+
+#endif