| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * smp.h: PPC64 specific SMP code. |
| 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 | |
| 16 | #ifdef __KERNEL__ |
| 17 | #ifndef _PPC64_SMP_H |
| 18 | #define _PPC64_SMP_H |
| 19 | |
| 20 | #include <linux/config.h> |
| 21 | #include <linux/threads.h> |
| 22 | #include <linux/cpumask.h> |
| 23 | #include <linux/kernel.h> |
| 24 | |
| 25 | #ifndef __ASSEMBLY__ |
| 26 | |
| 27 | #include <asm/paca.h> |
| 28 | |
| 29 | extern int boot_cpuid; |
| 30 | extern int boot_cpuid_phys; |
| 31 | |
| 32 | extern void cpu_die(void); |
| 33 | |
| 34 | #ifdef CONFIG_SMP |
| 35 | |
| 36 | extern void smp_send_debugger_break(int cpu); |
| 37 | struct pt_regs; |
| 38 | extern void smp_message_recv(int, struct pt_regs *); |
| 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 | |
| 48 | #define __smp_processor_id() (get_paca()->paca_index) |
| 49 | #define hard_smp_processor_id() (get_paca()->hw_cpu_id) |
| 50 | |
| 51 | extern cpumask_t cpu_sibling_map[NR_CPUS]; |
| 52 | |
| 53 | /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers. |
| 54 | * |
| 55 | * Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up |
| 56 | * in /proc/interrupts will be wrong!!! --Troy */ |
| 57 | #define PPC_MSG_CALL_FUNCTION 0 |
| 58 | #define PPC_MSG_RESCHEDULE 1 |
| 59 | /* This is unused now */ |
| 60 | #if 0 |
| 61 | #define PPC_MSG_MIGRATE_TASK 2 |
| 62 | #endif |
| 63 | #define PPC_MSG_DEBUGGER_BREAK 3 |
| 64 | |
| 65 | void smp_init_iSeries(void); |
| 66 | void smp_init_pSeries(void); |
| 67 | |
| 68 | extern int __cpu_disable(void); |
| 69 | extern void __cpu_die(unsigned int cpu); |
| 70 | #endif /* CONFIG_SMP */ |
| 71 | |
| 72 | #define get_hard_smp_processor_id(CPU) (paca[(CPU)].hw_cpu_id) |
| 73 | #define set_hard_smp_processor_id(CPU, VAL) \ |
| 74 | do { (paca[(CPU)].hw_cpu_id = (VAL)); } while (0) |
| 75 | |
| 76 | extern int smt_enabled_at_boot; |
| 77 | |
| 78 | extern int smp_mpic_probe(void); |
| 79 | extern void smp_mpic_setup_cpu(int cpu); |
| 80 | extern void smp_mpic_message_pass(int target, int msg); |
| 81 | extern void smp_generic_kick_cpu(int nr); |
| 82 | |
| 83 | extern void smp_generic_give_timebase(void); |
| 84 | extern void smp_generic_take_timebase(void); |
| 85 | |
| 86 | extern struct smp_ops_t *smp_ops; |
| 87 | |
| 88 | #endif /* __ASSEMBLY__ */ |
| 89 | |
| 90 | #endif /* !(_PPC64_SMP_H) */ |
| 91 | #endif /* __KERNEL__ */ |