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 | |
Michael Ellerman | 1c21a29 | 2008-05-08 14:27:19 +1000 | [diff] [blame] | 40 | DECLARE_PER_CPU(unsigned int, pvr); |
| 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #ifdef CONFIG_HOTPLUG_CPU |
| 43 | extern void fixup_irqs(cpumask_t map); |
| 44 | int generic_cpu_disable(void); |
| 45 | int generic_cpu_enable(unsigned int cpu); |
| 46 | void generic_cpu_die(unsigned int cpu); |
| 47 | void generic_mach_cpu_die(void); |
| 48 | #endif |
| 49 | |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 50 | #ifdef CONFIG_PPC64 |
Hugh Dickins | 048c8bc | 2006-11-01 05:44:54 +1100 | [diff] [blame] | 51 | #define raw_smp_processor_id() (local_paca->paca_index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #define hard_smp_processor_id() (get_paca()->hw_cpu_id) |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 53 | #else |
| 54 | /* 32-bit */ |
| 55 | extern int smp_hw_index[]; |
| 56 | |
| 57 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
| 58 | #define hard_smp_processor_id() (smp_hw_index[smp_processor_id()]) |
Benjamin Herrenschmidt | 41eba0a | 2008-08-18 14:23:48 +1000 | [diff] [blame] | 59 | |
| 60 | static inline int get_hard_smp_processor_id(int cpu) |
| 61 | { |
| 62 | return smp_hw_index[cpu]; |
| 63 | } |
| 64 | |
| 65 | static inline void set_hard_smp_processor_id(int cpu, int phys) |
| 66 | { |
| 67 | smp_hw_index[cpu] = phys; |
| 68 | } |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 69 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Mike Travis | d5a7430 | 2007-10-16 01:24:05 -0700 | [diff] [blame] | 71 | DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); |
Nathan Lynch | 440a085 | 2008-07-27 15:24:53 +1000 | [diff] [blame] | 72 | DECLARE_PER_CPU(cpumask_t, cpu_core_map); |
Nathan Lynch | e9efed3 | 2008-07-27 15:24:54 +1000 | [diff] [blame] | 73 | extern int cpu_to_core_id(int cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
| 75 | /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers. |
| 76 | * |
| 77 | * Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up |
| 78 | * in /proc/interrupts will be wrong!!! --Troy */ |
| 79 | #define PPC_MSG_CALL_FUNCTION 0 |
| 80 | #define PPC_MSG_RESCHEDULE 1 |
Jens Axboe | b7d7a24 | 2008-06-26 11:22:13 +0200 | [diff] [blame] | 81 | #define PPC_MSG_CALL_FUNC_SINGLE 2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | #define PPC_MSG_DEBUGGER_BREAK 3 |
| 83 | |
Milton Miller | 25ddd73 | 2008-11-14 20:11:49 +0000 | [diff] [blame] | 84 | /* |
| 85 | * irq controllers that have dedicated ipis per message and don't |
| 86 | * need additional code in the action handler may use this |
| 87 | */ |
| 88 | extern int smp_request_message_ipi(int virq, int message); |
| 89 | extern const char *smp_ipi_name[]; |
| 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | void smp_init_iSeries(void); |
| 92 | void smp_init_pSeries(void); |
Arnd Bergmann | 19fe047 | 2005-10-31 20:08:38 -0500 | [diff] [blame] | 93 | void smp_init_cell(void); |
Ishizaki Kou | c347b79 | 2007-02-02 16:47:17 +0900 | [diff] [blame] | 94 | void smp_init_celleb(void); |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 95 | void smp_setup_cpu_maps(void); |
Mike Travis | d5a7430 | 2007-10-16 01:24:05 -0700 | [diff] [blame] | 96 | void smp_setup_cpu_sibling_map(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
| 98 | extern int __cpu_disable(void); |
| 99 | extern void __cpu_die(unsigned int cpu); |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 100 | |
| 101 | #else |
| 102 | /* for UP */ |
Kumar Gala | 78b5b62 | 2008-10-10 09:44:33 +0000 | [diff] [blame] | 103 | #define hard_smp_processor_id() get_hard_smp_processor_id(0) |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 104 | #define smp_setup_cpu_maps() |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | #endif /* CONFIG_SMP */ |
| 107 | |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 108 | #ifdef CONFIG_PPC64 |
Benjamin Herrenschmidt | 41eba0a | 2008-08-18 14:23:48 +1000 | [diff] [blame] | 109 | static inline int get_hard_smp_processor_id(int cpu) |
| 110 | { |
| 111 | return paca[cpu].hw_cpu_id; |
| 112 | } |
| 113 | |
| 114 | static inline void set_hard_smp_processor_id(int cpu, int phys) |
| 115 | { |
| 116 | paca[cpu].hw_cpu_id = phys; |
| 117 | } |
Paul Mackerras | 2249ca9 | 2005-11-07 13:18:13 +1100 | [diff] [blame] | 118 | |
| 119 | extern void smp_release_cpus(void); |
| 120 | |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 121 | #else |
| 122 | /* 32-bit */ |
| 123 | #ifndef CONFIG_SMP |
Anton Blanchard | 4df2046 | 2006-03-25 17:25:17 +1100 | [diff] [blame] | 124 | extern int boot_cpuid_phys; |
Benjamin Herrenschmidt | 41eba0a | 2008-08-18 14:23:48 +1000 | [diff] [blame] | 125 | static inline int get_hard_smp_processor_id(int cpu) |
| 126 | { |
| 127 | return boot_cpuid_phys; |
| 128 | } |
| 129 | |
| 130 | static inline void set_hard_smp_processor_id(int cpu, int phys) |
| 131 | { |
Kumar Gala | 78b5b62 | 2008-10-10 09:44:33 +0000 | [diff] [blame] | 132 | boot_cpuid_phys = phys; |
Benjamin Herrenschmidt | 41eba0a | 2008-08-18 14:23:48 +1000 | [diff] [blame] | 133 | } |
| 134 | #endif /* !CONFIG_SMP */ |
| 135 | #endif /* !CONFIG_PPC64 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
| 137 | extern int smt_enabled_at_boot; |
| 138 | |
| 139 | extern int smp_mpic_probe(void); |
| 140 | extern void smp_mpic_setup_cpu(int cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | extern void smp_generic_kick_cpu(int nr); |
| 142 | |
| 143 | extern void smp_generic_give_timebase(void); |
| 144 | extern void smp_generic_take_timebase(void); |
| 145 | |
| 146 | extern struct smp_ops_t *smp_ops; |
| 147 | |
Jens Axboe | b7d7a24 | 2008-06-26 11:22:13 +0200 | [diff] [blame] | 148 | extern void arch_send_call_function_single_ipi(int cpu); |
| 149 | extern void arch_send_call_function_ipi(cpumask_t mask); |
| 150 | |
Benjamin Herrenschmidt | cf54dc7 | 2009-07-23 23:15:28 +0000 | [diff] [blame^] | 151 | /* Definitions relative to the secondary CPU spin loop |
| 152 | * and entry point. Not all of them exist on both 32 and |
| 153 | * 64-bit but defining them all here doesn't harm |
| 154 | */ |
| 155 | extern void generic_secondary_smp_init(void); |
| 156 | extern unsigned long __secondary_hold_spinloop; |
| 157 | extern unsigned long __secondary_hold_acknowledge; |
| 158 | extern char __secondary_hold; |
| 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | #endif /* __ASSEMBLY__ */ |
| 161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | #endif /* __KERNEL__ */ |
Paul Mackerras | 5ad5707 | 2005-11-05 10:33:55 +1100 | [diff] [blame] | 163 | #endif /* _ASM_POWERPC_SMP_H) */ |