Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / arm / mach-footbridge / include / mach / memory.h

diff --git a/kernel/arch/arm/mach-footbridge/include/mach/memory.h b/kernel/arch/arm/mach-footbridge/include/mach/memory.h
new file mode 100644 (file)
index 0000000..6f2eccc
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/include/mach/memory.h
@@ -0,0 +1,64 @@
+/*
+ *  arch/arm/mach-footbridge/include/mach/memory.h
+ *
+ *  Copyright (C) 1996-1999 Russell King.
+ *
+ * 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.
+ *
+ *  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_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+
+#if defined(CONFIG_FOOTBRIDGE_ADDIN)
+/*
+ * If we may be using add-in footbridge mode, then we must
+ * use the out-of-line translation that makes use of the
+ * PCI BAR
+ */
+#ifndef __ASSEMBLY__
+extern unsigned long __virt_to_bus(unsigned long);
+extern unsigned long __bus_to_virt(unsigned long);
+extern unsigned long __pfn_to_bus(unsigned long);
+extern unsigned long __bus_to_pfn(unsigned long);
+#endif
+#define __virt_to_bus  __virt_to_bus
+#define __bus_to_virt  __bus_to_virt
+
+#elif defined(CONFIG_FOOTBRIDGE_HOST)
+
+/*
+ * The footbridge is programmed to expose the system RAM at 0xe0000000.
+ * The requirement is that the RAM isn't placed at bus address 0, which
+ * would clash with VGA cards.
+ */
+#define BUS_OFFSET             0xe0000000
+#define __virt_to_bus(x)       ((x) + (BUS_OFFSET - PAGE_OFFSET))
+#define __bus_to_virt(x)       ((x) - (BUS_OFFSET - PAGE_OFFSET))
+#define __pfn_to_bus(x)                (__pfn_to_phys(x) + (BUS_OFFSET - PHYS_OFFSET))
+#define __bus_to_pfn(x)                __phys_to_pfn((x) - (BUS_OFFSET - PHYS_OFFSET))
+
+#else
+
+#error "Undefined footbridge mode"
+
+#endif
+
+/*
+ * Cache flushing area.
+ */
+#define FLUSH_BASE             0xf9000000
+
+#define FLUSH_BASE_PHYS                0x50000000
+
+#endif