1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved. 7 */ 8#ifndef _ASM_IA64_SN_NODEPDA_H 9#define _ASM_IA64_SN_NODEPDA_H 10 11 12#include <asm/semaphore.h> 13#include <asm/irq.h> 14#include <asm/sn/arch.h> 15#include <asm/sn/intr.h> 16#include <asm/sn/bte.h> 17 18/* 19 * NUMA Node-Specific Data structures are defined in this file. 20 * In particular, this is the location of the node PDA. 21 * A pointer to the right node PDA is saved in each CPU PDA. 22 */ 23 24/* 25 * Node-specific data structure. 26 * 27 * One of these structures is allocated on each node of a NUMA system. 28 * 29 * This structure provides a convenient way of keeping together 30 * all per-node data structures. 31 */ 32struct phys_cpuid { 33 short nasid; 34 char subnode; 35 char slice; 36}; 37 38struct nodepda_s { 39 void *pdinfo; /* Platform-dependent per-node info */ 40 41 /* 42 * The BTEs on this node are shared by the local cpus 43 */ 44 struct bteinfo_s bte_if[MAX_BTES_PER_NODE]; /* Virtual Interface */ 45 struct timer_list bte_recovery_timer; 46 spinlock_t bte_recovery_lock; 47 48 /* 49 * Array of pointers to the nodepdas for each node. 50 */ 51 struct nodepda_s *pernode_pdaindr[MAX_COMPACT_NODES]; 52 53 /* 54 * Array of physical cpu identifiers. Indexed by cpuid. 55 */ 56 struct phys_cpuid phys_cpuid[NR_CPUS]; 57 spinlock_t ptc_lock ____cacheline_aligned_in_smp; 58}; 59 60typedef struct nodepda_s nodepda_t; 61 62/* 63 * Access Functions for node PDA. 64 * Since there is one nodepda for each node, we need a convenient mechanism 65 * to access these nodepdas without cluttering code with #ifdefs. 66 * The next set of definitions provides this. 67 * Routines are expected to use 68 * 69 * sn_nodepda - to access node PDA for the node on which code is running 70 * NODEPDA(cnodeid) - to access node PDA for cnodeid 71 */ 72 73DECLARE_PER_CPU(struct nodepda_s *, __sn_nodepda); 74#define sn_nodepda (__get_cpu_var(__sn_nodepda)) 75#define NODEPDA(cnodeid) (sn_nodepda->pernode_pdaindr[cnodeid]) 76 77/* 78 * Check if given a compact node id the corresponding node has all the 79 * cpus disabled. 80 */ 81#define is_headless_node(cnodeid) (nr_cpus_node(cnodeid) == 0) 82 83#endif /* _ASM_IA64_SN_NODEPDA_H */ 84