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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
*/
#ifndef _ASM_IA64_SN_NODEPDA_H
#define _ASM_IA64_SN_NODEPDA_H
#include <asm/irq.h>
#include <asm/sn/arch.h>
#include <asm/sn/intr.h>
#include <asm/sn/bte.h>
/*
* NUMA Node-Specific Data structures are defined in this file.
* In particular, this is the location of the node PDA.
* A pointer to the right node PDA is saved in each CPU PDA.
*/
/*
* Node-specific data structure.
*
* One of these structures is allocated on each node of a NUMA system.
*
* This structure provides a convenient way of keeping together
* all per-node data structures.
*/
struct phys_cpuid {
short nasid;
char subnode;
char slice;
};
struct nodepda_s {
void *pdinfo; /* Platform-dependent per-node info */
/*
* The BTEs on this node are shared by the local cpus
*/
struct bteinfo_s bte_if[MAX_BTES_PER_NODE]; /* Virtual Interface */
struct timer_list bte_recovery_timer;
spinlock_t bte_recovery_lock;
/*
* Array of pointers to the nodepdas for each node.
*/
struct nodepda_s *pernode_pdaindr[MAX_COMPACT_NODES];
/*
* Array of physical cpu identifiers. Indexed by cpuid.
*/
struct phys_cpuid phys_cpuid[NR_CPUS];
spinlock_t ptc_lock ____cacheline_aligned_in_smp;
};
typedef struct nodepda_s nodepda_t;
/*
* Access Functions for node PDA.
* Since there is one nodepda for each node, we need a convenient mechanism
* to access these nodepdas without cluttering code with #ifdefs.
* The next set of definitions provides this.
* Routines are expected to use
*
* sn_nodepda - to access node PDA for the node on which code is running
* NODEPDA(cnodeid) - to access node PDA for cnodeid
*/
DECLARE_PER_CPU(struct nodepda_s *, __sn_nodepda);
#define sn_nodepda (__get_cpu_var(__sn_nodepda))
#define NODEPDA(cnodeid) (sn_nodepda->pernode_pdaindr[cnodeid])
/*
* Check if given a compact node id the corresponding node has all the
* cpus disabled.
*/
#define is_headless_node(cnodeid) (nr_cpus_node(cnodeid) == 0)
#endif /* _ASM_IA64_SN_NODEPDA_H */