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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* 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
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/threads.h>
10#include <asm/head.h>
11#include <asm/btfixup.h>
12
13#ifndef __ASSEMBLY__
14
15#include <linux/cpumask.h>
16
17#endif /* __ASSEMBLY__ */
18
19#ifdef CONFIG_SMP
20
21#ifndef __ASSEMBLY__
22
23#include <asm/ptrace.h>
24#include <asm/asi.h>
25#include <asm/atomic.h>
26
27/*
28 * Private routines/data
29 */
30
31extern unsigned char boot_cpu_id;
32extern cpumask_t phys_cpu_present_map;
33#define cpu_possible_map phys_cpu_present_map
34
35typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long,
36 unsigned long, unsigned long);
37
38/*
39 * General functions that each host system must provide.
40 */
41
42void sun4m_init_smp(void);
43void sun4d_init_smp(void);
44
45void smp_callin(void);
46void smp_boot_cpus(void);
47void smp_store_cpu_info(int);
48
49struct seq_file;
50void smp_bogo(struct seq_file *);
51void smp_info(struct seq_file *);
52
53BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long)
54BTFIXUPDEF_CALL(void, smp_message_pass, int, int, unsigned long, int)
55BTFIXUPDEF_CALL(int, __hard_smp_processor_id, void)
56BTFIXUPDEF_BLACKBOX(hard_smp_processor_id)
57BTFIXUPDEF_BLACKBOX(load_current)
58
59#define smp_cross_call(func,arg1,arg2,arg3,arg4,arg5) BTFIXUP_CALL(smp_cross_call)(func,arg1,arg2,arg3,arg4,arg5)
60#define smp_message_pass(target,msg,data,wait) BTFIXUP_CALL(smp_message_pass)(target,msg,data,wait)
61
Adrian Bunk31156242005-10-03 17:37:02 -070062static inline void xc0(smpfunc_t func) { smp_cross_call(func, 0, 0, 0, 0, 0); }
63static inline void xc1(smpfunc_t func, unsigned long arg1)
Linus Torvalds1da177e2005-04-16 15:20:36 -070064{ smp_cross_call(func, arg1, 0, 0, 0, 0); }
Adrian Bunk31156242005-10-03 17:37:02 -070065static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070066{ smp_cross_call(func, arg1, arg2, 0, 0, 0); }
Adrian Bunk31156242005-10-03 17:37:02 -070067static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 unsigned long arg3)
69{ smp_cross_call(func, arg1, arg2, arg3, 0, 0); }
Adrian Bunk31156242005-10-03 17:37:02 -070070static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 unsigned long arg3, unsigned long arg4)
72{ smp_cross_call(func, arg1, arg2, arg3, arg4, 0); }
Adrian Bunk31156242005-10-03 17:37:02 -070073static inline void xc5(smpfunc_t func, unsigned long arg1, unsigned long arg2,
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 unsigned long arg3, unsigned long arg4, unsigned long arg5)
75{ smp_cross_call(func, arg1, arg2, arg3, arg4, arg5); }
76
Adrian Bunk31156242005-10-03 17:37:02 -070077static inline int smp_call_function(void (*func)(void *info), void *info, int nonatomic, int wait)
Linus Torvalds1da177e2005-04-16 15:20:36 -070078{
79 xc1((smpfunc_t)func, (unsigned long)info);
80 return 0;
81}
82
Adrian Bunk31156242005-10-03 17:37:02 -070083static inline int cpu_logical_map(int cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -070084{
Bob Breuera54123e2006-03-23 22:36:19 -080085 return cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -070086}
87
Adrian Bunk31156242005-10-03 17:37:02 -070088static inline int hard_smp4m_processor_id(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070089{
90 int cpuid;
91
92 __asm__ __volatile__("rd %%tbr, %0\n\t"
93 "srl %0, 12, %0\n\t"
94 "and %0, 3, %0\n\t" :
95 "=&r" (cpuid));
96 return cpuid;
97}
98
Adrian Bunk31156242005-10-03 17:37:02 -070099static inline int hard_smp4d_processor_id(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100{
101 int cpuid;
102
103 __asm__ __volatile__("lda [%%g0] %1, %0\n\t" :
104 "=&r" (cpuid) : "i" (ASI_M_VIKING_TMP1));
105 return cpuid;
106}
107
108#ifndef MODULE
Adrian Bunk31156242005-10-03 17:37:02 -0700109static inline int hard_smp_processor_id(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110{
111 int cpuid;
112
113 /* Black box - sun4m
114 __asm__ __volatile__("rd %%tbr, %0\n\t"
115 "srl %0, 12, %0\n\t"
116 "and %0, 3, %0\n\t" :
117 "=&r" (cpuid));
118 - sun4d
119 __asm__ __volatile__("lda [%g0] ASI_M_VIKING_TMP1, %0\n\t"
120 "nop; nop" :
121 "=&r" (cpuid));
122 See btfixup.h and btfixupprep.c to understand how a blackbox works.
123 */
124 __asm__ __volatile__("sethi %%hi(___b_hard_smp_processor_id), %0\n\t"
125 "sethi %%hi(boot_cpu_id), %0\n\t"
126 "ldub [%0 + %%lo(boot_cpu_id)], %0\n\t" :
127 "=&r" (cpuid));
128 return cpuid;
129}
130#else
Adrian Bunk31156242005-10-03 17:37:02 -0700131static inline int hard_smp_processor_id(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132{
133 int cpuid;
134
135 __asm__ __volatile__("mov %%o7, %%g1\n\t"
136 "call ___f___hard_smp_processor_id\n\t"
137 " nop\n\t"
138 "mov %%g2, %0\n\t" : "=r"(cpuid) : : "g1", "g2");
139 return cpuid;
140}
141#endif
142
Ingo Molnar39c715b2005-06-21 17:14:34 -0700143#define raw_smp_processor_id() (current_thread_info()->cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144
145#define prof_multiplier(__cpu) cpu_data(__cpu).multiplier
146#define prof_counter(__cpu) cpu_data(__cpu).counter
147
Bob Breuer7202fb42006-06-20 00:30:31 -0700148void smp_setup_cpu_possible_map(void);
149
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150#endif /* !(__ASSEMBLY__) */
151
152/* Sparc specific messages. */
153#define MSG_CROSS_CALL 0x0005 /* run func on cpus */
154
155/* Empirical PROM processor mailbox constants. If the per-cpu mailbox
156 * contains something other than one of these then the ipi is from
157 * Linux's active_kernel_processor. This facility exists so that
158 * the boot monitor can capture all the other cpus when one catches
159 * a watchdog reset or the user enters the monitor using L1-A keys.
160 */
161#define MBOX_STOPCPU 0xFB
162#define MBOX_IDLECPU 0xFC
163#define MBOX_IDLECPU2 0xFD
164#define MBOX_STOPCPU2 0xFE
165
Bob Breuer7202fb42006-06-20 00:30:31 -0700166#else /* SMP */
167
168#define smp_setup_cpu_possible_map() do { } while (0)
169
170#endif /* !(SMP) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
172#define NO_PROC_ID 0xFF
173
174#endif /* !(_SPARC_SMP_H) */