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Commit 8400def8 authored by Jack Steiner's avatar Jack Steiner Committed by Ingo Molnar
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x86: define the macros and tables for blade functions 



Add UV macros for converting between cpu numbers, blade numbers
and node numbers. Note that these are used ONLY within x86_64 UV
modules, and are not for general kernel use.

Signed-off-by: default avatarJack Steiner <steiner@sgi.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 952cf6d7

include/asm-x86/uv/uv_hub.h

+74 −0
Original line number Diff line number Diff line
@@ -206,5 +206,79 @@ static inline void uv_write_local_mmr(unsigned long offset, unsigned long val) 
	*uv_local_mmr_address(offset) = val;

}



/*

 * Structures and definitions for converting between cpu, node, and blade

 * numbers.

 */

struct uv_blade_info {

	unsigned short	nr_posible_cpus;

	unsigned short	nr_online_cpus;

	unsigned short	nasid;

};

struct uv_blade_info *uv_blade_info;

extern short *uv_node_to_blade;

extern short *uv_cpu_to_blade;

extern short uv_possible_blades;



/* Blade-local cpu number of current cpu. Numbered 0 .. <# cpus on the blade> */

static inline int uv_blade_processor_id(void)

{

	return uv_hub_info->blade_processor_id;

}



/* Blade number of current cpu. Numnbered 0 .. <#blades -1> */

static inline int uv_numa_blade_id(void)

{

	return uv_hub_info->numa_blade_id;

}



/* Convert a cpu number to the the UV blade number */

static inline int uv_cpu_to_blade_id(int cpu)

{

	return uv_cpu_to_blade[cpu];

}



/* Convert linux node number to the UV blade number */

static inline int uv_node_to_blade_id(int nid)

{

	return uv_node_to_blade[nid];

}



/* Convert a blade id to the NASID of the blade */

static inline int uv_blade_to_nasid(int bid)

{

	return uv_blade_info[bid].nasid;

}



/* Determine the number of possible cpus on a blade */

static inline int uv_blade_nr_possible_cpus(int bid)

{

	return uv_blade_info[bid].nr_posible_cpus;

}



/* Determine the number of online cpus on a blade */

static inline int uv_blade_nr_online_cpus(int bid)

{

	return uv_blade_info[bid].nr_online_cpus;

}



/* Convert a cpu id to the NASID of the blade containing the cpu */

static inline int uv_cpu_to_nasid(int cpu)

{

	return uv_blade_info[uv_cpu_to_blade_id(cpu)].nasid;

}



/* Convert a node number to the NASID of the blade */

static inline int uv_node_to_nasid(int nid)

{

	return uv_blade_info[uv_node_to_blade_id(nid)].nasid;

}



/* Maximum possible number of blades */

static inline int uv_num_possible_blades(void)

{

	return uv_possible_blades;

}



#endif /* __ASM_X86_UV_HUB__ */