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smp_32.h
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1 /* smp.h: Sparc specific SMP stuff.
2  *
3  * Copyright (C) 1996 David S. Miller ([email protected])
4  */
5 
6 #ifndef _SPARC_SMP_H
7 #define _SPARC_SMP_H
8 
9 #include <linux/threads.h>
10 #include <asm/head.h>
11 
12 #ifndef __ASSEMBLY__
13 
14 #include <linux/cpumask.h>
15 
16 #endif /* __ASSEMBLY__ */
17 
18 #ifdef CONFIG_SMP
19 
20 #ifndef __ASSEMBLY__
21 
22 #include <asm/ptrace.h>
23 #include <asm/asi.h>
24 #include <linux/atomic.h>
25 
26 /*
27  * Private routines/data
28  */
29 
30 extern unsigned char boot_cpu_id;
31 extern volatile unsigned long cpu_callin_map[NR_CPUS];
34 
35 typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long,
36  unsigned long, unsigned long);
37 
38 void cpu_panic(void);
39 extern void smp4m_irq_rotate(int cpu);
40 
41 /*
42  * General functions that each host system must provide.
43  */
44 
45 void sun4m_init_smp(void);
46 void sun4d_init_smp(void);
47 
48 void smp_callin(void);
49 void smp_boot_cpus(void);
50 void smp_store_cpu_info(int);
51 
52 void smp_resched_interrupt(void);
55 
56 struct seq_file;
57 void smp_bogo(struct seq_file *);
58 void smp_info(struct seq_file *);
59 
60 struct sparc32_ipi_ops {
61  void (*cross_call)(smpfunc_t func, cpumask_t mask, unsigned long arg1,
62  unsigned long arg2, unsigned long arg3,
63  unsigned long arg4);
64  void (*resched)(int cpu);
65  void (*single)(int cpu);
66  void (*mask_one)(int cpu);
67 };
68 extern const struct sparc32_ipi_ops *sparc32_ipi_ops;
69 
70 static inline void xc0(smpfunc_t func)
71 {
72  sparc32_ipi_ops->cross_call(func, *cpu_online_mask, 0, 0, 0, 0);
73 }
74 
75 static inline void xc1(smpfunc_t func, unsigned long arg1)
76 {
77  sparc32_ipi_ops->cross_call(func, *cpu_online_mask, arg1, 0, 0, 0);
78 }
79 static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
80 {
81  sparc32_ipi_ops->cross_call(func, *cpu_online_mask, arg1, arg2, 0, 0);
82 }
83 
84 static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
85  unsigned long arg3)
86 {
87  sparc32_ipi_ops->cross_call(func, *cpu_online_mask,
88  arg1, arg2, arg3, 0);
89 }
90 
91 static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
92  unsigned long arg3, unsigned long arg4)
93 {
94  sparc32_ipi_ops->cross_call(func, *cpu_online_mask,
95  arg1, arg2, arg3, arg4);
96 }
97 
99 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
100 
101 static inline int cpu_logical_map(int cpu)
102 {
103  return cpu;
104 }
105 
106 extern int hard_smp_processor_id(void);
107 
108 #define raw_smp_processor_id() (current_thread_info()->cpu)
109 
110 #define prof_multiplier(__cpu) cpu_data(__cpu).multiplier
111 #define prof_counter(__cpu) cpu_data(__cpu).counter
112 
113 void smp_setup_cpu_possible_map(void);
114 
115 #endif /* !(__ASSEMBLY__) */
116 
117 /* Sparc specific messages. */
118 #define MSG_CROSS_CALL 0x0005 /* run func on cpus */
119 
120 /* Empirical PROM processor mailbox constants. If the per-cpu mailbox
121  * contains something other than one of these then the ipi is from
122  * Linux's active_kernel_processor. This facility exists so that
123  * the boot monitor can capture all the other cpus when one catches
124  * a watchdog reset or the user enters the monitor using L1-A keys.
125  */
126 #define MBOX_STOPCPU 0xFB
127 #define MBOX_IDLECPU 0xFC
128 #define MBOX_IDLECPU2 0xFD
129 #define MBOX_STOPCPU2 0xFE
130 
131 #else /* SMP */
132 
133 #define hard_smp_processor_id() 0
134 #define smp_setup_cpu_possible_map() do { } while (0)
135 
136 #endif /* !(SMP) */
137 #endif /* !(_SPARC_SMP_H) */