| /* |
| * 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 */ |
