Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 2 | * smp.h: PowerPC-specific SMP code. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 16 | #ifndef _ASM_POWERPC_SMP_H |
| 17 | #define _ASM_POWERPC_SMP_H |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <linux/threads.h> |
| 21 | #include <linux/cpumask.h> |
| 22 | #include <linux/kernel.h> |
| 23 | |
| 24 | #ifndef __ASSEMBLY__ |
| 25 | |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 26 | #ifdef CONFIG_PPC64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <asm/paca.h> |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 28 | #endif |
Mike Travis | d5a7430 | 2007-10-16 01:24:05 -0700 | [diff] [blame^] | 29 | #include <asm/percpu.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
| 31 | extern int boot_cpuid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
| 33 | extern void cpu_die(void); |
| 34 | |
| 35 | #ifdef CONFIG_SMP |
| 36 | |
| 37 | extern void smp_send_debugger_break(int cpu); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 38 | extern void smp_message_recv(int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 48 | #ifdef CONFIG_PPC64 |
Hugh Dickins | 048c8bc | 2006-11-01 05:44:54 +1100 | [diff] [blame] | 49 | #define raw_smp_processor_id() (local_paca->paca_index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #define hard_smp_processor_id() (get_paca()->hw_cpu_id) |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
Mike Travis | d5a7430 | 2007-10-16 01:24:05 -0700 | [diff] [blame^] | 62 | DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Arnd Bergmann | 19fe047 | 2005-10-31 20:08:38 -0500 | [diff] [blame] | 78 | void smp_init_cell(void); |
Ishizaki Kou | c347b79 | 2007-02-02 16:47:17 +0900 | [diff] [blame] | 79 | void smp_init_celleb(void); |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 80 | void smp_setup_cpu_maps(void); |
Mike Travis | d5a7430 | 2007-10-16 01:24:05 -0700 | [diff] [blame^] | 81 | void smp_setup_cpu_sibling_map(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
| 83 | extern int __cpu_disable(void); |
| 84 | extern void __cpu_die(unsigned int cpu); |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 85 | |
| 86 | #else |
| 87 | /* for UP */ |
Fernando Luis Vazquez Cao | 2f4dfe2 | 2007-05-09 02:33:25 -0700 | [diff] [blame] | 88 | #define hard_smp_processor_id() 0 |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 89 | #define smp_setup_cpu_maps() |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | #endif /* CONFIG_SMP */ |
| 92 | |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 93 | #ifdef CONFIG_PPC64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) |
Paul Mackerras | 2249ca9 | 2005-11-07 13:18:13 +1100 | [diff] [blame] | 97 | |
| 98 | extern void smp_release_cpus(void); |
| 99 | |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 100 | #else |
| 101 | /* 32-bit */ |
| 102 | #ifndef CONFIG_SMP |
Anton Blanchard | 4df2046 | 2006-03-25 17:25:17 +1100 | [diff] [blame] | 103 | extern int boot_cpuid_phys; |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 104 | #define get_hard_smp_processor_id(cpu) boot_cpuid_phys |
| 105 | #define set_hard_smp_processor_id(cpu, phys) |
| 106 | #endif |
| 107 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | #endif /* __ASSEMBLY__ */ |
| 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | #endif /* __KERNEL__ */ |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 123 | #endif /* _ASM_POWERPC_SMP_H) */ |