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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Paul Mackerras5ad57072005-11-05 10:33:55 +11002 * smp.h: PowerPC-specific SMP code.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
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
Paul Mackerras5ad57072005-11-05 10:33:55 +110016#ifndef _ASM_POWERPC_SMP_H
17#define _ASM_POWERPC_SMP_H
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -070019
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include <linux/threads.h>
21#include <linux/cpumask.h>
22#include <linux/kernel.h>
23
24#ifndef __ASSEMBLY__
25
Paul Mackerras5ad57072005-11-05 10:33:55 +110026#ifdef CONFIG_PPC64
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <asm/paca.h>
Paul Mackerras5ad57072005-11-05 10:33:55 +110028#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070029
30extern int boot_cpuid;
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
32extern void cpu_die(void);
33
34#ifdef CONFIG_SMP
35
36extern void smp_send_debugger_break(int cpu);
David Howells7d12e782006-10-05 14:55:46 +010037extern void smp_message_recv(int);
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
39#ifdef CONFIG_HOTPLUG_CPU
40extern void fixup_irqs(cpumask_t map);
41int generic_cpu_disable(void);
42int generic_cpu_enable(unsigned int cpu);
43void generic_cpu_die(unsigned int cpu);
44void generic_mach_cpu_die(void);
45#endif
46
Paul Mackerras5ad57072005-11-05 10:33:55 +110047#ifdef CONFIG_PPC64
Ingo Molnar39c715b2005-06-21 17:14:34 -070048#define raw_smp_processor_id() (get_paca()->paca_index)
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#define hard_smp_processor_id() (get_paca()->hw_cpu_id)
Paul Mackerras5ad57072005-11-05 10:33:55 +110050#else
51/* 32-bit */
52extern int smp_hw_index[];
53
54#define raw_smp_processor_id() (current_thread_info()->cpu)
55#define hard_smp_processor_id() (smp_hw_index[smp_processor_id()])
56#define get_hard_smp_processor_id(cpu) (smp_hw_index[(cpu)])
57#define set_hard_smp_processor_id(cpu, phys)\
58 (smp_hw_index[(cpu)] = (phys))
59#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070060
61extern cpumask_t cpu_sibling_map[NR_CPUS];
62
63/* Since OpenPIC has only 4 IPIs, we use slightly different message numbers.
64 *
65 * Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up
66 * in /proc/interrupts will be wrong!!! --Troy */
67#define PPC_MSG_CALL_FUNCTION 0
68#define PPC_MSG_RESCHEDULE 1
69/* This is unused now */
70#if 0
71#define PPC_MSG_MIGRATE_TASK 2
72#endif
73#define PPC_MSG_DEBUGGER_BREAK 3
74
75void smp_init_iSeries(void);
76void smp_init_pSeries(void);
Arnd Bergmann19fe0472005-10-31 20:08:38 -050077void smp_init_cell(void);
Paul Mackerras5ad57072005-11-05 10:33:55 +110078void smp_setup_cpu_maps(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
80extern int __cpu_disable(void);
81extern void __cpu_die(unsigned int cpu);
Paul Mackerras5ad57072005-11-05 10:33:55 +110082
83#else
84/* for UP */
85#define smp_setup_cpu_maps()
Paul Mackerras5ad57072005-11-05 10:33:55 +110086
Linus Torvalds1da177e2005-04-16 15:20:36 -070087#endif /* CONFIG_SMP */
88
Paul Mackerras5ad57072005-11-05 10:33:55 +110089#ifdef CONFIG_PPC64
Linus Torvalds1da177e2005-04-16 15:20:36 -070090#define get_hard_smp_processor_id(CPU) (paca[(CPU)].hw_cpu_id)
91#define set_hard_smp_processor_id(CPU, VAL) \
92 do { (paca[(CPU)].hw_cpu_id = (VAL)); } while (0)
Paul Mackerras2249ca92005-11-07 13:18:13 +110093
94extern void smp_release_cpus(void);
95
Paul Mackerras5ad57072005-11-05 10:33:55 +110096#else
97/* 32-bit */
98#ifndef CONFIG_SMP
Anton Blanchard4df20462006-03-25 17:25:17 +110099extern int boot_cpuid_phys;
Paul Mackerras5ad57072005-11-05 10:33:55 +1100100#define get_hard_smp_processor_id(cpu) boot_cpuid_phys
101#define set_hard_smp_processor_id(cpu, phys)
102#endif
103#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104
105extern int smt_enabled_at_boot;
106
107extern int smp_mpic_probe(void);
108extern void smp_mpic_setup_cpu(int cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109extern void smp_generic_kick_cpu(int nr);
110
111extern void smp_generic_give_timebase(void);
112extern void smp_generic_take_timebase(void);
113
114extern struct smp_ops_t *smp_ops;
115
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116#endif /* __ASSEMBLY__ */
117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118#endif /* __KERNEL__ */
Paul Mackerras5ad57072005-11-05 10:33:55 +1100119#endif /* _ASM_POWERPC_SMP_H) */