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