| /* | |
| * 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) 1995-1997,1999,2001-2005 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 <linux/numa.h> | |
| #include <asm/types.h> | |
| #include <asm/percpu.h> | |
| #include <asm/sn/types.h> | |
| #include <asm/sn/sn_cpuid.h> | |
| /* | |
| * This is the maximum number of NUMALINK nodes that can be part of a single | |
| * SSI kernel. This number includes C-brick, M-bricks, and TIOs. Nodes in | |
| * remote partitions are NOT included in this number. | |
| * The number of compact nodes cannot exceed size of a coherency domain. | |
| * The purpose of this define is to specify a node count that includes | |
| * all C/M/TIO nodes in an SSI system. | |
| * | |
| * SGI system can currently support up to 256 C/M nodes plus additional TIO nodes. | |
| * | |
| * Note: ACPI20 has an architectural limit of 256 nodes. When we upgrade | |
| * to ACPI3.0, this limit will be removed. The notion of "compact nodes" | |
| * should be deleted and TIOs should be included in MAX_NUMNODES. | |
| */ | |
| #define MAX_TIO_NODES MAX_NUMNODES | |
| #define MAX_COMPACT_NODES (MAX_NUMNODES + MAX_TIO_NODES) | |
| /* | |
| * Maximum number of nodes in all partitions and in all coherency domains. | |
| * This is the total number of nodes accessible in the numalink fabric. It | |
| * includes all C & M bricks, plus all TIOs. | |
| * | |
| * This value is also the value of the maximum number of NASIDs in the numalink | |
| * fabric. | |
| */ | |
| #define MAX_NUMALINK_NODES 16384 | |
| /* | |
| * 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 this_cpu_ptr(&__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) | |
| /* | |
| * 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_COMPACT_NODES]); | |
| #define sn_cnodeid_to_nasid this_cpu_ptr(&__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); | |
| extern bool sn_cpu_disable_allowed(int cpu); | |
| #endif /* _ASM_IA64_SN_ARCH_H */ |