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/*
* smp.h: PPC64 specific SMP code.
*
* Original was a copy of sparc smp.h. Now heavily modified
* for PPC.
*
* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com>
*
* 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.
*/
#ifdef __KERNEL__
#ifndef _PPC64_SMP_H
#define _PPC64_SMP_H
#include <linux/config.h>
#include <linux/kernel.h>
#ifdef CONFIG_SMP
#ifndef __ASSEMBLY__
#include <asm/paca.h>
struct current_set_struct {
struct task_struct *task;
unsigned long *sp_real;
};
extern unsigned long cpu_online_map;
extern void smp_message_pass(int target, int msg, unsigned long data, int wait);
extern void smp_store_cpu_info(int id);
extern void smp_send_tlb_invalidate(int);
extern void smp_send_xmon_break(int cpu);
struct pt_regs;
extern void smp_message_recv(int, struct pt_regs *);
#define NO_PROC_ID 0xFF /* No processor magic marker */
#define PROC_CHANGE_PENALTY 20
/* 1 to 1 mapping on PPC -- Cort */
#define cpu_logical_map(cpu) (cpu)
#define cpu_number_map(x) (x)
extern volatile unsigned long cpu_callin_map[NR_CPUS];
#define smp_processor_id() (get_paca()->xPacaIndex)
#define hard_smp_processor_id() (get_paca()->xHwProcNum)
#define get_hard_smp_processor_id(CPU) (paca[(CPU)].xHwProcNum)
/* Since OpenPIC has only 4 IPIs, we use slightly different message numbers.
*
* Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up
* in /proc/interrupts will be wrong!!! --Troy */
#define PPC_MSG_CALL_FUNCTION 0
#define PPC_MSG_RESCHEDULE 1
#define PPC_MSG_INVALIDATE_TLB 2
#define PPC_MSG_XMON_BREAK 3
void smp_init_iSeries(void);
void smp_init_pSeries(void);
#endif /* __ASSEMBLY__ */
#endif /* !(CONFIG_SMP) */
#endif /* !(_PPC64_SMP_H) */
#endif /* __KERNEL__ */
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