fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-sparc / smp.h
blobb3f492208fd20168d2615a6bf51ae8a9101f63b3
1 /* smp.h: Sparc specific SMP stuff.
3 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
4 */
6 #ifndef _SPARC_SMP_H
7 #define _SPARC_SMP_H
9 #include <linux/threads.h>
10 #include <asm/head.h>
11 #include <asm/btfixup.h>
13 #ifndef __ASSEMBLY__
15 #include <linux/cpumask.h>
17 #endif /* __ASSEMBLY__ */
19 #ifdef CONFIG_SMP
21 #ifndef __ASSEMBLY__
23 #include <asm/ptrace.h>
24 #include <asm/asi.h>
25 #include <asm/atomic.h>
28 * Private routines/data
31 extern unsigned char boot_cpu_id;
32 extern cpumask_t phys_cpu_present_map;
33 #define cpu_possible_map phys_cpu_present_map
35 typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long,
36 unsigned long, unsigned long);
39 * General functions that each host system must provide.
42 void sun4m_init_smp(void);
43 void sun4d_init_smp(void);
45 void smp_callin(void);
46 void smp_boot_cpus(void);
47 void smp_store_cpu_info(int);
49 struct seq_file;
50 void smp_bogo(struct seq_file *);
51 void smp_info(struct seq_file *);
53 BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long)
54 BTFIXUPDEF_CALL(void, smp_message_pass, int, int, unsigned long, int)
55 BTFIXUPDEF_CALL(int, __hard_smp_processor_id, void)
56 BTFIXUPDEF_BLACKBOX(hard_smp_processor_id)
57 BTFIXUPDEF_BLACKBOX(load_current)
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)
62 static inline void xc0(smpfunc_t func) { smp_cross_call(func, 0, 0, 0, 0, 0); }
63 static inline void xc1(smpfunc_t func, unsigned long arg1)
64 { smp_cross_call(func, arg1, 0, 0, 0, 0); }
65 static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
66 { smp_cross_call(func, arg1, arg2, 0, 0, 0); }
67 static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
68 unsigned long arg3)
69 { smp_cross_call(func, arg1, arg2, arg3, 0, 0); }
70 static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
71 unsigned long arg3, unsigned long arg4)
72 { smp_cross_call(func, arg1, arg2, arg3, arg4, 0); }
73 static inline void xc5(smpfunc_t func, unsigned long arg1, unsigned long arg2,
74 unsigned long arg3, unsigned long arg4, unsigned long arg5)
75 { smp_cross_call(func, arg1, arg2, arg3, arg4, arg5); }
77 static inline int smp_call_function(void (*func)(void *info), void *info, int nonatomic, int wait)
79 xc1((smpfunc_t)func, (unsigned long)info);
80 return 0;
83 static inline int cpu_logical_map(int cpu)
85 return cpu;
88 static inline int hard_smp4m_processor_id(void)
90 int cpuid;
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;
99 static inline int hard_smp4d_processor_id(void)
101 int cpuid;
103 __asm__ __volatile__("lda [%%g0] %1, %0\n\t" :
104 "=&r" (cpuid) : "i" (ASI_M_VIKING_TMP1));
105 return cpuid;
108 #ifndef MODULE
109 static inline int hard_smp_processor_id(void)
111 int cpuid;
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.
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;
130 #else
131 static inline int hard_smp_processor_id(void)
133 int cpuid;
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;
141 #endif
143 #define raw_smp_processor_id() (current_thread_info()->cpu)
145 #define prof_multiplier(__cpu) cpu_data(__cpu).multiplier
146 #define prof_counter(__cpu) cpu_data(__cpu).counter
148 void smp_setup_cpu_possible_map(void);
150 #endif /* !(__ASSEMBLY__) */
152 /* Sparc specific messages. */
153 #define MSG_CROSS_CALL 0x0005 /* run func on cpus */
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.
161 #define MBOX_STOPCPU 0xFB
162 #define MBOX_IDLECPU 0xFC
163 #define MBOX_IDLECPU2 0xFD
164 #define MBOX_STOPCPU2 0xFE
166 #else /* SMP */
168 #define hard_smp_processor_id() 0
169 #define smp_setup_cpu_possible_map() do { } while (0)
171 #endif /* !(SMP) */
173 #define NO_PROC_ID 0xFF
175 #endif /* !(_SPARC_SMP_H) */