2 * smp.h: PPC64 specific SMP code.
4 * Original was a copy of sparc smp.h. Now heavily modified
7 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
8 * Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com>
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.
20 #include <linux/config.h>
21 #include <linux/threads.h>
22 #include <linux/cpumask.h>
23 #include <linux/kernel.h>
29 extern int boot_cpuid;
30 extern int boot_cpuid_phys;
32 extern void cpu_die(void);
36 extern void smp_send_debugger_break(int cpu);
38 extern void smp_message_recv(int, struct pt_regs *);
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);
48 #define raw_smp_processor_id() (get_paca()->paca_index)
49 #define hard_smp_processor_id() (get_paca()->hw_cpu_id)
51 extern cpumask_t cpu_sibling_map[NR_CPUS];
53 /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers.
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 */
61 #define PPC_MSG_MIGRATE_TASK 2
63 #define PPC_MSG_DEBUGGER_BREAK 3
65 void smp_init_iSeries(void);
66 void smp_init_pSeries(void);
68 extern int __cpu_disable(void);
69 extern void __cpu_die(unsigned int cpu);
70 #endif /* CONFIG_SMP */
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)
76 extern int smt_enabled_at_boot;
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);
83 extern void smp_generic_give_timebase(void);
84 extern void smp_generic_take_timebase(void);
86 extern struct smp_ops_t *smp_ops;
88 #ifdef CONFIG_PPC_PSERIES
89 void vpa_init(int cpu);
91 static inline void vpa_init(int cpu)
94 #endif /* CONFIG_PPC_PSERIES */
96 #endif /* __ASSEMBLY__ */
98 #endif /* !(_PPC64_SMP_H) */
99 #endif /* __KERNEL__ */