1/* smp.h: PPC specific SMP stuff.
2 *
3 * Original was a copy of sparc smp.h.  Now heavily modified
4 * for PPC.
5 *
6 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
7 * Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com>
8 */
9#ifdef __KERNEL__
10#ifndef _PPC_SMP_H
11#define _PPC_SMP_H
12
13#include <linux/kernel.h>
14#include <linux/bitops.h>
15#include <linux/errno.h>
16#include <linux/cpumask.h>
17#include <linux/threads.h>
18
19#ifdef CONFIG_SMP
20
21#ifndef __ASSEMBLY__
22
23struct cpuinfo_PPC {
24	unsigned long loops_per_jiffy;
25	unsigned long pvr;
26	unsigned long *pgd_cache;
27	unsigned long *pte_cache;
28	unsigned long pgtable_cache_sz;
29};
30
31extern struct cpuinfo_PPC cpu_data[];
32extern cpumask_t cpu_online_map;
33extern cpumask_t cpu_possible_map;
34extern unsigned long smp_proc_in_lock[];
35extern volatile unsigned long cpu_callin_map[];
36extern int smp_tb_synchronized;
37extern struct smp_ops_t *smp_ops;
38
39extern void smp_send_tlb_invalidate(int);
40extern void smp_send_xmon_break(int cpu);
41struct pt_regs;
42extern void smp_message_recv(int);
43
44extern int __cpu_disable(void);
45extern void __cpu_die(unsigned int cpu);
46extern void cpu_die(void) __attribute__((noreturn));
47
48#define raw_smp_processor_id()	(current_thread_info()->cpu)
49
50extern int __cpu_up(unsigned int cpu);
51
52extern int smp_hw_index[];
53#define hard_smp_processor_id() 	(smp_hw_index[smp_processor_id()])
54#define get_hard_smp_processor_id(cpu)	(smp_hw_index[(cpu)])
55#define set_hard_smp_processor_id(cpu, phys)\
56					(smp_hw_index[(cpu)] = (phys))
57
58#endif /* __ASSEMBLY__ */
59
60#else /* !(CONFIG_SMP) */
61
62static inline void cpu_die(void) { }
63#define get_hard_smp_processor_id(cpu) 0
64#define set_hard_smp_processor_id(cpu, phys)
65#define hard_smp_processor_id() 0
66
67#endif /* !(CONFIG_SMP) */
68
69#ifndef __ASSEMBLY__
70extern int boot_cpuid;
71extern int boot_cpuid_phys;
72#endif
73
74#endif /* !(_PPC_SMP_H) */
75#endif /* __KERNEL__ */
76