diff options
Diffstat (limited to 'include/asm-ia64/sn/arch.h')
| -rw-r--r-- | include/asm-ia64/sn/arch.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/asm-ia64/sn/arch.h b/include/asm-ia64/sn/arch.h index bfc922a0ab717..7c349f07916a1 100644 --- a/include/asm-ia64/sn/arch.h +++ b/include/asm-ia64/sn/arch.h @@ -12,10 +12,34 @@ #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. |