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Diffstat (limited to 'include/asm-powerpc/smp.h')
| -rw-r--r-- | include/asm-powerpc/smp.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/include/asm-powerpc/smp.h b/include/asm-powerpc/smp.h new file mode 100644 index 00000000000..8bcdd0faefe --- /dev/null +++ b/include/asm-powerpc/smp.h @@ -0,0 +1,119 @@ +/* + * 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/config.h> +#include <linux/threads.h> +#include <linux/cpumask.h> +#include <linux/kernel.h> + +#ifndef __ASSEMBLY__ + +#ifdef CONFIG_PPC64 +#include <asm/paca.h> +#endif + +extern int boot_cpuid; +extern int boot_cpuid_phys; + +extern void cpu_die(void); + +#ifdef CONFIG_SMP + +extern void smp_send_debugger_break(int cpu); +struct pt_regs; +extern void smp_message_recv(int, struct pt_regs *); + +#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() (get_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 + +extern cpumask_t cpu_sibling_map[NR_CPUS]; + +/* 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_setup_cpu_maps(void); + +extern int __cpu_disable(void); +extern void __cpu_die(unsigned int cpu); + +#else +/* for UP */ +#define smp_setup_cpu_maps() +#define smp_release_cpus() + +#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) +#else +/* 32-bit */ +#ifndef CONFIG_SMP +#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) */ |