2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
8 * Copyright (C) 1995-1997,1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
9 * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
11 #ifndef _ASM_IA64_SN_ARCH_H
12 #define _ASM_IA64_SN_ARCH_H
14 #include <linux/numa.h>
15 #include <asm/types.h>
16 #include <asm/percpu.h>
17 #include <asm/sn/types.h>
18 #include <asm/sn/sn_cpuid.h>
21 * The following defines attributes of the HUB chip. These attributes are
22 * frequently referenced. They are kept in the per-cpu data areas of each cpu.
23 * They are kept together in a struct to minimize cache misses.
25 struct sn_hub_info_s {
32 DECLARE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
33 #define sn_hub_info (&__get_cpu_var(__sn_hub_info))
34 #define is_shub2() (sn_hub_info->shub2)
35 #define is_shub1() (sn_hub_info->shub2 == 0)
38 * Use this macro to test if shub 1.1 wars should be enabled
40 #define enable_shub_wars_1_1() (sn_hub_info->shub_1_1_found)
44 * This is the maximum number of nodes that can be part of a kernel.
45 * Effectively, it's the maximum number of compact node ids (cnodeid_t).
46 * This is not necessarily the same as MAX_NASIDS.
48 #define MAX_COMPACT_NODES 2048
49 #define CPUS_PER_NODE 4
53 * Compact node ID to nasid mappings kept in the per-cpu data areas of each
56 DECLARE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
57 #define sn_cnodeid_to_nasid (&__get_cpu_var(__sn_cnodeid_to_nasid[0]))
61 extern u8 sn_partition_id;
62 extern u8 sn_system_size;
63 extern u8 sn_sharing_domain_size;
64 extern u8 sn_region_size;
66 extern void sn_flush_all_caches(long addr, long bytes);
68 #endif /* _ASM_IA64_SN_ARCH_H */