1 /* smp.h: Sparc specific SMP stuff.
2 *
3 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
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];
32 extern cpumask_t smp_commenced_mask;
33 extern struct linux_prom_registers smp_penguin_ctable;
34
35 typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long,
36 unsigned long, unsigned long);
37
38 void cpu_panic(void);
39
40 /*
41 * General functions that each host system must provide.
42 */
43
44 void sun4m_init_smp(void);
45 void sun4d_init_smp(void);
46
47 void smp_callin(void);
48 void smp_store_cpu_info(int);
49
50 void smp_resched_interrupt(void);
51 void smp_call_function_single_interrupt(void);
52 void smp_call_function_interrupt(void);
53
54 struct seq_file;
55 void smp_bogo(struct seq_file *);
56 void smp_info(struct seq_file *);
57
58 struct sparc32_ipi_ops {
59 void (*cross_call)(smpfunc_t func, cpumask_t mask, unsigned long arg1,
60 unsigned long arg2, unsigned long arg3,
61 unsigned long arg4);
62 void (*resched)(int cpu);
63 void (*single)(int cpu);
64 void (*mask_one)(int cpu);
65 };
66 extern const struct sparc32_ipi_ops *sparc32_ipi_ops;
67
xc0(smpfunc_t func)68 static inline void xc0(smpfunc_t func)
69 {
70 sparc32_ipi_ops->cross_call(func, *cpu_online_mask, 0, 0, 0, 0);
71 }
72
xc1(smpfunc_t func,unsigned long arg1)73 static inline void xc1(smpfunc_t func, unsigned long arg1)
74 {
75 sparc32_ipi_ops->cross_call(func, *cpu_online_mask, arg1, 0, 0, 0);
76 }
xc2(smpfunc_t func,unsigned long arg1,unsigned long arg2)77 static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
78 {
79 sparc32_ipi_ops->cross_call(func, *cpu_online_mask, arg1, arg2, 0, 0);
80 }
81
xc3(smpfunc_t func,unsigned long arg1,unsigned long arg2,unsigned long arg3)82 static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
83 unsigned long arg3)
84 {
85 sparc32_ipi_ops->cross_call(func, *cpu_online_mask,
86 arg1, arg2, arg3, 0);
87 }
88
xc4(smpfunc_t func,unsigned long arg1,unsigned long arg2,unsigned long arg3,unsigned long arg4)89 static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
90 unsigned long arg3, unsigned long arg4)
91 {
92 sparc32_ipi_ops->cross_call(func, *cpu_online_mask,
93 arg1, arg2, arg3, arg4);
94 }
95
96 void arch_send_call_function_single_ipi(int cpu);
97 void arch_send_call_function_ipi_mask(const struct cpumask *mask);
98
cpu_logical_map(int cpu)99 static inline int cpu_logical_map(int cpu)
100 {
101 return cpu;
102 }
103
104 int hard_smp_processor_id(void);
105
106 #define raw_smp_processor_id() (current_thread_info()->cpu)
107
108 void smp_setup_cpu_possible_map(void);
109
110 #endif /* !(__ASSEMBLY__) */
111
112 /* Sparc specific messages. */
113 #define MSG_CROSS_CALL 0x0005 /* run func on cpus */
114
115 /* Empirical PROM processor mailbox constants. If the per-cpu mailbox
116 * contains something other than one of these then the ipi is from
117 * Linux's active_kernel_processor. This facility exists so that
118 * the boot monitor can capture all the other cpus when one catches
119 * a watchdog reset or the user enters the monitor using L1-A keys.
120 */
121 #define MBOX_STOPCPU 0xFB
122 #define MBOX_IDLECPU 0xFC
123 #define MBOX_IDLECPU2 0xFD
124 #define MBOX_STOPCPU2 0xFE
125
126 #else /* SMP */
127
128 #define hard_smp_processor_id() 0
129 #define smp_setup_cpu_possible_map() do { } while (0)
130
131 #endif /* !(SMP) */
132 #endif /* !(_SPARC_SMP_H) */
133