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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) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
* Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
*/
#ifndef __ASM_SMP_H
#define __ASM_SMP_H
#include <linux/config.h>
#ifdef CONFIG_SMP
#include <linux/threads.h>
#include <linux/irq.h>
#if 0
struct cpuinfo_mips { /* XXX */
unsigned long loops_per_sec;
unsigned long last_asn;
unsigned long *pgd_cache;
unsigned long *pte_cache;
unsigned long pgtable_cache_sz;
unsigned long ipi_count;
unsigned long irq_attempt[NR_IRQS];
unsigned long smp_local_irq_count;
unsigned long prof_multiplier;
unsigned long prof_counter;
} __attribute__((aligned(64)));
extern struct cpuinfo_mips cpu_data[NR_CPUS];
#endif
#define smp_processor_id() (current->processor)
#define PROC_CHANGE_PENALTY 20
/* Map from cpu id to sequential logical cpu number. This will only
not be idempotent when cpus failed to come on-line. */
extern int __cpu_number_map[NR_CPUS];
#define cpu_number_map(cpu) __cpu_number_map[cpu]
/* The reverse map from sequential logical cpu number to cpu id. */
extern int __cpu_logical_map[NR_CPUS];
#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
#endif
#define NO_PROC_ID (-1)
#if (NR_CPUS <= _MIPS_SZLONG)
typedef unsigned long cpumask_t;
#define CPUMASK_CLRALL(p) (p) = 0
#define CPUMASK_SETB(p, bit) (p) |= 1 << (bit)
#define CPUMASK_CLRB(p, bit) (p) &= ~(1ULL << (bit))
#define CPUMASK_TSTB(p, bit) ((p) & (1ULL << (bit)))
#elif (NR_CPUS <= 128)
/*
* The foll should work till 128 cpus.
*/
#define CPUMASK_SIZE (NR_CPUS/_MIPS_SZLONG)
#define CPUMASK_INDEX(bit) ((bit) >> 6)
#define CPUMASK_SHFT(bit) ((bit) & 0x3f)
typedef struct {
unsigned long _bits[CPUMASK_SIZE];
} cpumask_t;
#define CPUMASK_CLRALL(p) (p)._bits[0] = 0, (p)._bits[1] = 0
#define CPUMASK_SETB(p, bit) (p)._bits[CPUMASK_INDEX(bit)] |= \
(1ULL << CPUMASK_SHFT(bit))
#define CPUMASK_CLRB(p, bit) (p)._bits[CPUMASK_INDEX(bit)] &= \
~(1ULL << CPUMASK_SHFT(bit))
#define CPUMASK_TSTB(p, bit) ((p)._bits[CPUMASK_INDEX(bit)] & \
(1ULL << CPUMASK_SHFT(bit)))
#else
#error cpumask macros only defined for 128p kernels
#endif
#endif /* __ASM_SMP_H */
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