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Diffstat (limited to 'include/asm-ia64/sn/arch.h')
| -rw-r--r-- | include/asm-ia64/sn/arch.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/asm-ia64/sn/arch.h b/include/asm-ia64/sn/arch.h new file mode 100644 index 000000000000..7c349f07916a --- /dev/null +++ b/include/asm-ia64/sn/arch.h @@ -0,0 +1,52 @@ +/* + * 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 */ |