1 files changed, 52 insertions, 0 deletions

diff --git a/include/asm-ia64/sn/arch.h b/include/asm-ia64/sn/arch.h
new file mode 100644
index 000000000000..7c349f07916a
--- /dev/null
+++ b/include/asm-ia64/sn/arch.h
@@ -0,0 +1,52 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * SGI specific setup.
+ *
+ * Copyright (C) 1995-1997,1999,2001-2004 Silicon Graphics, Inc.  All rights reserved.
+ * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
+ */
+#ifndef _ASM_IA64_SN_ARCH_H
+#define _ASM_IA64_SN_ARCH_H
+
+#include <asm/types.h>
+#include <asm/percpu.h>
+#include <asm/sn/types.h>
+#include <asm/sn/sn_cpuid.h>
+
+/*
+ * The following defines attributes of the HUB chip. These attributes are
+ * frequently referenced. They are kept in the per-cpu data areas of each cpu.
+ * They are kept together in a struct to minimize cache misses.
+ */
+struct sn_hub_info_s {
+        u8 shub2;
+        u8 nasid_shift;
+        u8 as_shift;
+        u8 shub_1_1_found;
+        u16 nasid_bitmask;
+};
+DECLARE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
+#define sn_hub_info     (&__get_cpu_var(__sn_hub_info))
+#define is_shub2()      (sn_hub_info->shub2)
+#define is_shub1()      (sn_hub_info->shub2 == 0)
+
+/*
+ * Use this macro to test if shub 1.1 wars should be enabled
+ */
+#define enable_shub_wars_1_1()  (sn_hub_info->shub_1_1_found)
+
+
+/*
+ * This is the maximum number of nodes that can be part of a kernel.
+ * Effectively, it's the maximum number of compact node ids (cnodeid_t).
+ * This is not necessarily the same as MAX_NASIDS.
+ */
+#define MAX_COMPACT_NODES       2048
+#define CPUS_PER_NODE           4
+
+extern void sn_flush_all_caches(long addr, long bytes);
+
+#endif /* _ASM_IA64_SN_ARCH_H */