vserver 2.0 rc7

[linux-2.6.git] / include / asm-ia64 / sn / arch.h

diff --git a/include/asm-ia64/sn/arch.h b/include/asm-ia64/sn/arch.h
index bfc922a..635fdce 100644 (file)
--- a/include/asm-ia64/sn/arch.h
+++ b/include/asm-ia64/sn/arch.h
@@ -5,16 +5,40 @@
  *
  * SGI specific setup.
  *
- * Copyright (C) 1995-1997,1999,2001-2004 Silicon Graphics, Inc.  All rights reserved.
+ * Copyright (C) 1995-1997,1999,2001-2005 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).
@@ -23,6 +47,21 @@
 #define MAX_COMPACT_NODES      2048
 #define CPUS_PER_NODE          4
 
+
+/*
+ * Compact node ID to nasid mappings kept in the per-cpu data areas of each
+ * cpu.
+ */
+DECLARE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
+#define sn_cnodeid_to_nasid    (&__get_cpu_var(__sn_cnodeid_to_nasid[0]))
+
+
+
+extern u8 sn_partition_id;
+extern u8 sn_system_size;
+extern u8 sn_sharing_domain_size;
+extern u8 sn_region_size;
+
 extern void sn_flush_all_caches(long addr, long bytes);
 
 #endif /* _ASM_IA64_SN_ARCH_H */