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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
* Copyright (C) 2000, 2001, 2002 by Ralf Baechle
* Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
* Copyright (C) 2000, 2001 Broadcom Corporation
*/
#ifndef _ASM_SMP_H
#define _ASM_SMP_H
#include <linux/config.h>
#ifdef CONFIG_SMP
#include <linux/threads.h>
#include <asm/atomic.h>
#include <asm/current.h>
#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]
#define NO_PROC_ID (-1)
#define SMP_RESCHEDULE_YOURSELF 0x1
#define SMP_CALL_FUNCTION 0x2
#if (NR_CPUS <= _MIPS_SZLONG)
typedef unsigned long cpumask_t;
#define CPUMASK_CLRALL(p) do { (p) = 0; } while(0)
#define CPUMASK_SETB(p, bit) (p) |= 1UL << (bit)
#define CPUMASK_CLRB(p, bit) (p) &= ~(1UL << (bit))
#define CPUMASK_TSTB(p, bit) ((p) & (1UL << (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)] |= \
(1UL << CPUMASK_SHFT(bit))
#define CPUMASK_CLRB(p, bit) (p)._bits[CPUMASK_INDEX(bit)] &= \
~(1UL << CPUMASK_SHFT(bit))
#define CPUMASK_TSTB(p, bit) ((p)._bits[CPUMASK_INDEX(bit)] & \
(1UL << CPUMASK_SHFT(bit)))
#else
#error cpumask macros only defined for 128p kernels
#endif
struct call_data_struct {
void (*func)(void *);
void *info;
atomic_t started;
atomic_t finished;
int wait;
};
extern struct call_data_struct *call_data;
extern cpumask_t cpu_online_map;
#endif /* CONFIG_SMP */
#endif /* _ASM_SMP_H */
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