X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-ia64%2Fsn%2Fsn_cpuid.h;h=a676dd9ace3eb2dceba652dea92761ea56d93842;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=6f1128f1e895eb9b40f41a321869538fe5deb47c;hpb=9bf4aaab3e101692164d49b7ca357651eb691cb6;p=linux-2.6.git diff --git a/include/asm-ia64/sn/sn_cpuid.h b/include/asm-ia64/sn/sn_cpuid.h index 6f1128f1e..a676dd9ac 100644 --- a/include/asm-ia64/sn/sn_cpuid.h +++ b/include/asm-ia64/sn/sn_cpuid.h @@ -4,15 +4,15 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 2000-2003 Silicon Graphics, Inc. All rights reserved. + * Copyright (C) 2000-2005 Silicon Graphics, Inc. All rights reserved. */ #ifndef _ASM_IA64_SN_SN_CPUID_H #define _ASM_IA64_SN_SN_CPUID_H -#include #include +#include #include #include @@ -36,9 +36,6 @@ * the boot cpu is 0. * smp_processor_id() returns the cpuid of the current cpu. * - * CPUNUM - On IA64, a cpunum and cpuid are the same. This is NOT true - * on other architectures like IA32. - * * CPU_PHYSICAL_ID (also known as HARD_PROCESSOR_ID) * This is the same as 31:24 of the processor LID register * hard_smp_processor_id()- cpu_physical_id of current processor @@ -46,15 +43,15 @@ * cpu_logical_id(phy_id) - convert a to a * * not real efficient - don't use in perf critical code * - * LID - processor defined register (see PRM V2). - * - * On SN2 - * 31:28 - id Contains 0-3 to identify the cpu on the node - * 27:16 - eid Contains the NASID + * SLICE - a number in the range of 0 - 3 (typically) that represents the + * cpu number on a brick. * + * SUBNODE - (almost obsolete) the number of the FSB that a cpu is + * connected to. This is also the same as the PI number. Usually 0 or 1. * + * NOTE!!!: the value of the bits in the cpu physical id (SAPICid or LID) of a cpu has no + * significance. The SAPIC id (LID) is a 16-bit cookie that has meaning only to the PROM. * - * The following assumes the following mappings for LID register values: * * The macros convert between cpu physical ids & slice/nasid/cnodeid. * These terms are described below: @@ -83,95 +80,53 @@ * */ -#ifndef CONFIG_SMP -#define cpu_physical_id(cpuid) ((ia64_getreg(_IA64_REG_CR_LID) >> 16) & 0xffff) -#endif +#define get_node_number(addr) NASID_GET(addr) /* - * macros for some of these exist in sn/addrs.h & sn/arch.h, etc. However, - * trying #include these files here causes circular dependencies. - */ -#define cpu_physical_id_to_nasid(cpi) ((cpi) &0xfff) -#define cpu_physical_id_to_slice(cpi) ((cpi>>12) & 3) -#define get_nasid() ((ia64_getreg(_IA64_REG_CR_LID) >> 16) & 0xfff) -#define get_slice() ((ia64_getreg(_IA64_REG_CR_LID) >> 28) & 0xf) -#define get_node_number(addr) (((unsigned long)(addr)>>38) & 0x7ff) - -/* - * NOTE: id & eid refer to Intel's definitions of the LID register - * * NOTE: on non-MP systems, only cpuid 0 exists */ -#define id_eid_to_cpu_physical_id(id,eid) (((id)<<8) | (eid)) - -#define nasid_slice_to_cpuid(nasid,slice) (cpu_logical_id(nasid_slice_to_cpu_physical_id((nasid),(slice)))) -#define nasid_slice_to_cpu_physical_id(nasid, slice) (((slice)<<12) | (nasid)) +extern short physical_node_map[]; /* indexed by nasid to get cnode */ /* - * The following table/struct is used for managing PTC coherency domains. + * Macros for retrieving info about current cpu */ -typedef struct { - u8 domain; - u8 reserved; - u16 sapicid; -} sn_sapicid_info_t; - -extern sn_sapicid_info_t sn_sapicid_info[]; /* indexed by cpuid */ -extern short physical_node_map[]; /* indexed by nasid to get cnode */ - +#define get_nasid() (sn_nodepda->phys_cpuid[smp_processor_id()].nasid) +#define get_subnode() (sn_nodepda->phys_cpuid[smp_processor_id()].subnode) +#define get_slice() (sn_nodepda->phys_cpuid[smp_processor_id()].slice) +#define get_cnode() (sn_nodepda->phys_cpuid[smp_processor_id()].cnode) +#define get_sapicid() ((ia64_getreg(_IA64_REG_CR_LID) >> 16) & 0xffff) /* - * cpuid_to_slice - convert a cpuid to the slice that it resides on - * There are 4 cpus per node. This function returns 0 .. 3) + * Macros for retrieving info about an arbitrary cpu + * cpuid - logical cpu id */ -#define cpuid_to_slice(cpuid) (cpu_physical_id_to_slice(cpu_physical_id(cpuid))) +#define cpuid_to_nasid(cpuid) (sn_nodepda->phys_cpuid[cpuid].nasid) +#define cpuid_to_subnode(cpuid) (sn_nodepda->phys_cpuid[cpuid].subnode) +#define cpuid_to_slice(cpuid) (sn_nodepda->phys_cpuid[cpuid].slice) /* - * cpuid_to_nasid - convert a cpuid to the NASID that it resides on + * Dont use the following in performance critical code. They require scans + * of potentially large tables. */ -#define cpuid_to_nasid(cpuid) (cpu_physical_id_to_nasid(cpu_physical_id(cpuid))) - - -/* - * cpuid_to_cnodeid - convert a cpuid to the cnode that it resides on - */ -#define cpuid_to_cnodeid(cpuid) (physical_node_map[cpuid_to_nasid(cpuid)]) - +extern int nasid_slice_to_cpuid(int, int); /* * cnodeid_to_nasid - convert a cnodeid to a NASID - * Macro relies on pg_data for a node being on the node itself. - * Just extract the NASID from the pointer. - * */ -#define cnodeid_to_nasid(cnodeid) pda->cnodeid_to_nasid_table[cnodeid] +#define cnodeid_to_nasid(cnodeid) (sn_cnodeid_to_nasid[cnodeid]) - /* * nasid_to_cnodeid - convert a NASID to a cnodeid */ #define nasid_to_cnodeid(nasid) (physical_node_map[nasid]) - -/* - * cnode_slice_to_cpuid - convert a codeid & slice to a cpuid - */ - -#define cnode_slice_to_cpuid(cnodeid,slice) (nasid_slice_to_cpuid(cnodeid_to_nasid(cnodeid),(slice))) - - /* - * cpuid_to_subnode - convert a cpuid to the subnode it resides on. - * slice 0 & 1 are on subnode 0 - * slice 2 & 3 are on subnode 1. + * partition_coherence_id - get the coherence ID of the current partition */ -#define cpuid_to_subnode(cpuid) ((cpuid_to_slice(cpuid)<2) ? 0 : 1) - - -#define smp_physical_node_id() (cpuid_to_nasid(smp_processor_id())) - +extern u8 sn_coherency_id; +#define partition_coherence_id() (sn_coherency_id) #endif /* _ASM_IA64_SN_SN_CPUID_H */