arch/sparc/include/asm/smp_32.h

   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 #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 <linux/atomic.h>
  26
  27 /*
  28  *      Private routines/data
  29  */
  30
  31 extern unsigned char boot_cpu_id;
  32 extern volatile unsigned long cpu_callin_map[NR_CPUS];
  33 extern cpumask_t smp_commenced_mask;
  34 extern struct linux_prom_registers smp_penguin_ctable;
  35
  36 typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long,
  37                        unsigned long, unsigned long);
  38
  39 void cpu_panic(void);
  40 extern void smp4m_irq_rotate(int cpu);
  41
  42 /*
  43  *      General functions that each host system must provide.
  44  */
  45
  46 void sun4m_init_smp(void);
  47 void sun4d_init_smp(void);
  48
  49 void smp_callin(void);
  50 void smp_boot_cpus(void);
  51 void smp_store_cpu_info(int);
  52
  53 void smp_resched_interrupt(void);
  54 void smp_call_function_single_interrupt(void);
  55 void smp_call_function_interrupt(void);
  56
  57 struct seq_file;
  58 void smp_bogo(struct seq_file *);
  59 void smp_info(struct seq_file *);
  60
  61 BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, cpumask_t, unsigned long, unsigned long, unsigned long, unsigned long)
  62 BTFIXUPDEF_CALL(void, smp_ipi_resched, int);
  63 BTFIXUPDEF_CALL(void, smp_ipi_single, int);
  64 BTFIXUPDEF_CALL(void, smp_ipi_mask_one, int);
  65
  66 #define smp_cross_call(func,mask,arg1,arg2,arg3,arg4) BTFIXUP_CALL(smp_cross_call)(func,mask,arg1,arg2,arg3,arg4)
  67
  68 static inline void xc0(smpfunc_t func) { smp_cross_call(func, *cpu_online_mask, 0, 0, 0, 0); }
  69 static inline void xc1(smpfunc_t func, unsigned long arg1)
  70 { smp_cross_call(func, *cpu_online_mask, arg1, 0, 0, 0); }
  71 static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
  72 { smp_cross_call(func, *cpu_online_mask, arg1, arg2, 0, 0); }
  73 static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
  74                            unsigned long arg3)
  75 { smp_cross_call(func, *cpu_online_mask, arg1, arg2, arg3, 0); }
  76 static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
  77                            unsigned long arg3, unsigned long arg4)
  78 { smp_cross_call(func, *cpu_online_mask, arg1, arg2, arg3, arg4); }
  79
  80 extern void arch_send_call_function_single_ipi(int cpu);
  81 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
  82
  83 static inline int cpu_logical_map(int cpu)
  84 {
  85         return cpu;
  86 }
  87
  88 static inline int hard_smp4m_processor_id(void)
  89 {
  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
  99 static inline int hard_smp4d_processor_id(void)
 100 {
 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 extern inline int hard_smpleon_processor_id(void)
 109 {
 110         int cpuid;
 111         __asm__ __volatile__("rd     %%asr17,%0\n\t"
 112                              "srl    %0,28,%0" :
 113                              "=&r" (cpuid) : );
 114         return cpuid;
 115 }
 116
 117 extern int hard_smp_processor_id(void);
 118
 119 #define raw_smp_processor_id()          (current_thread_info()->cpu)
 120
 121 #define prof_multiplier(__cpu)          cpu_data(__cpu).multiplier
 122 #define prof_counter(__cpu)             cpu_data(__cpu).counter
 123
 124 void smp_setup_cpu_possible_map(void);
 125
 126 #endif /* !(__ASSEMBLY__) */
 127
 128 /* Sparc specific messages. */
 129 #define MSG_CROSS_CALL         0x0005       /* run func on cpus */
 130
 131 /* Empirical PROM processor mailbox constants.  If the per-cpu mailbox
 132  * contains something other than one of these then the ipi is from
 133  * Linux's active_kernel_processor.  This facility exists so that
 134  * the boot monitor can capture all the other cpus when one catches
 135  * a watchdog reset or the user enters the monitor using L1-A keys.
 136  */
 137 #define MBOX_STOPCPU          0xFB
 138 #define MBOX_IDLECPU          0xFC
 139 #define MBOX_IDLECPU2         0xFD
 140 #define MBOX_STOPCPU2         0xFE
 141
 142 #else /* SMP */
 143
 144 #define hard_smp_processor_id()         0
 145 #define smp_setup_cpu_possible_map() do { } while (0)
 146
 147 #endif /* !(SMP) */
 148 #endif /* !(_SPARC_SMP_H) */