| /* |
| * 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 */ |
