[linux-2.6-block.git] / include / asm-powerpc / smp.h

/* 
 * smp.h: PowerPC-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.
 */

#ifndef _ASM_POWERPC_SMP_H
#define _ASM_POWERPC_SMP_H
#ifdef __KERNEL__

#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/kernel.h>

#ifndef __ASSEMBLY__

#ifdef CONFIG_PPC64
#include <asm/paca.h>
#endif
#include <asm/percpu.h>

extern int boot_cpuid;

extern void cpu_die(void);

#ifdef CONFIG_SMP

extern void smp_send_debugger_break(int cpu);
extern void smp_message_recv(int);

#ifdef CONFIG_HOTPLUG_CPU
extern void fixup_irqs(cpumask_t map);
int generic_cpu_disable(void);
int generic_cpu_enable(unsigned int cpu);
void generic_cpu_die(unsigned int cpu);
void generic_mach_cpu_die(void);
#endif

#ifdef CONFIG_PPC64
#define raw_smp_processor_id()	(local_paca->paca_index)
#define hard_smp_processor_id() (get_paca()->hw_cpu_id)
#else
/* 32-bit */
extern int smp_hw_index[];

#define raw_smp_processor_id()	(current_thread_info()->cpu)
#define hard_smp_processor_id() 	(smp_hw_index[smp_processor_id()])
#define get_hard_smp_processor_id(cpu)	(smp_hw_index[(cpu)])
#define set_hard_smp_processor_id(cpu, phys)\
					(smp_hw_index[(cpu)] = (phys))
#endif

DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);

/* 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
/* This is unused now */
#if 0
#define PPC_MSG_MIGRATE_TASK    2
#endif
#define PPC_MSG_DEBUGGER_BREAK  3

void smp_init_iSeries(void);
void smp_init_pSeries(void);
void smp_init_cell(void);
void smp_init_celleb(void);
void smp_setup_cpu_maps(void);
void smp_setup_cpu_sibling_map(void);

extern int __cpu_disable(void);
extern void __cpu_die(unsigned int cpu);

#else
/* for UP */
#define hard_smp_processor_id()		0
#define smp_setup_cpu_maps()

#endif /* CONFIG_SMP */

#ifdef CONFIG_PPC64
#define get_hard_smp_processor_id(CPU) (paca[(CPU)].hw_cpu_id)
#define set_hard_smp_processor_id(CPU, VAL) \
	do { (paca[(CPU)].hw_cpu_id = (VAL)); } while (0)

extern void smp_release_cpus(void);

#else
/* 32-bit */
#ifndef CONFIG_SMP
extern int boot_cpuid_phys;
#define get_hard_smp_processor_id(cpu) 	boot_cpuid_phys
#define set_hard_smp_processor_id(cpu, phys)
#endif
#endif

extern int smt_enabled_at_boot;

extern int smp_mpic_probe(void);
extern void smp_mpic_setup_cpu(int cpu);
extern void smp_generic_kick_cpu(int nr);

extern void smp_generic_give_timebase(void);
extern void smp_generic_take_timebase(void);

extern struct smp_ops_t *smp_ops;

#endif /* __ASSEMBLY__ */

#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SMP_H) */
Commit	Line	Data
1da177e4	1	/*
5ad57078	2	* smp.h: PowerPC-specific SMP code.
1da177e4 LT	3	*
	4	* Original was a copy of sparc smp.h. Now heavily modified
	5	* for PPC.
	6	*
	7	* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
	8	* Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com>
	9	*
	10	* This program is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU General Public License
	12	* as published by the Free Software Foundation; either version
	13	* 2 of the License, or (at your option) any later version.
	14	*/
	15
5ad57078 PM	16	#ifndef _ASM_POWERPC_SMP_H
5ad57078 PM	17	#define _ASM_POWERPC_SMP_H
1da177e4	18	#ifdef __KERNEL__
1da177e4	19
1da177e4 LT	20	#include <linux/threads.h>
	21	#include <linux/cpumask.h>
	22	#include <linux/kernel.h>
	23
	24	#ifndef __ASSEMBLY__
	25
5ad57078	26	#ifdef CONFIG_PPC64
1da177e4	27	#include <asm/paca.h>
5ad57078	28	#endif
d5a7430d	29	#include <asm/percpu.h>
1da177e4 LT	30
1da177e4 LT	31	extern int boot_cpuid;
1da177e4 LT	32
	33	extern void cpu_die(void);
	34
	35	#ifdef CONFIG_SMP
	36
	37	extern void smp_send_debugger_break(int cpu);
7d12e780	38	extern void smp_message_recv(int);
1da177e4 LT	39
	40	#ifdef CONFIG_HOTPLUG_CPU
	41	extern void fixup_irqs(cpumask_t map);
	42	int generic_cpu_disable(void);
	43	int generic_cpu_enable(unsigned int cpu);
	44	void generic_cpu_die(unsigned int cpu);
	45	void generic_mach_cpu_die(void);
	46	#endif
	47
5ad57078	48	#ifdef CONFIG_PPC64
048c8bc9	49	#define raw_smp_processor_id() (local_paca->paca_index)
1da177e4	50	#define hard_smp_processor_id() (get_paca()->hw_cpu_id)
5ad57078 PM	51	#else
	52	/* 32-bit */
	53	extern int smp_hw_index[];
	54
	55	#define raw_smp_processor_id() (current_thread_info()->cpu)
	56	#define hard_smp_processor_id() (smp_hw_index[smp_processor_id()])
	57	#define get_hard_smp_processor_id(cpu) (smp_hw_index[(cpu)])
	58	#define set_hard_smp_processor_id(cpu, phys)\
	59	(smp_hw_index[(cpu)] = (phys))
	60	#endif
1da177e4	61
d5a7430d	62	DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
1da177e4 LT	63
	64	/* Since OpenPIC has only 4 IPIs, we use slightly different message numbers.
	65	*
	66	* Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up
	67	* in /proc/interrupts will be wrong!!! --Troy */
	68	#define PPC_MSG_CALL_FUNCTION 0
	69	#define PPC_MSG_RESCHEDULE 1
	70	/* This is unused now */
	71	#if 0
	72	#define PPC_MSG_MIGRATE_TASK 2
	73	#endif
	74	#define PPC_MSG_DEBUGGER_BREAK 3
	75
	76	void smp_init_iSeries(void);
	77	void smp_init_pSeries(void);
19fe0475	78	void smp_init_cell(void);
c347b798	79	void smp_init_celleb(void);
5ad57078	80	void smp_setup_cpu_maps(void);
d5a7430d	81	void smp_setup_cpu_sibling_map(void);
1da177e4 LT	82
	83	extern int __cpu_disable(void);
	84	extern void __cpu_die(unsigned int cpu);
5ad57078 PM	85
	86	#else
	87	/* for UP */
2f4dfe20	88	#define hard_smp_processor_id() 0
5ad57078	89	#define smp_setup_cpu_maps()
5ad57078	90
1da177e4 LT	91	#endif /* CONFIG_SMP */
1da177e4 LT	92
5ad57078	93	#ifdef CONFIG_PPC64
1da177e4 LT	94	#define get_hard_smp_processor_id(CPU) (paca[(CPU)].hw_cpu_id)
	95	#define set_hard_smp_processor_id(CPU, VAL) \
	96	do { (paca[(CPU)].hw_cpu_id = (VAL)); } while (0)
2249ca9d PM	97
	98	extern void smp_release_cpus(void);
	99
5ad57078 PM	100	#else
	101	/* 32-bit */
	102	#ifndef CONFIG_SMP
4df20460	103	extern int boot_cpuid_phys;
5ad57078 PM	104	#define get_hard_smp_processor_id(cpu) boot_cpuid_phys
	105	#define set_hard_smp_processor_id(cpu, phys)
	106	#endif
	107	#endif
1da177e4 LT	108
	109	extern int smt_enabled_at_boot;
	110
	111	extern int smp_mpic_probe(void);
	112	extern void smp_mpic_setup_cpu(int cpu);
1da177e4 LT	113	extern void smp_generic_kick_cpu(int nr);
	114
	115	extern void smp_generic_give_timebase(void);
	116	extern void smp_generic_take_timebase(void);
	117
	118	extern struct smp_ops_t *smp_ops;
	119
	120	#endif /* __ASSEMBLY__ */
	121
1da177e4	122	#endif /* __KERNEL__ */
5ad57078	123	#endif /* _ASM_POWERPC_SMP_H) */