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 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 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 } 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 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 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 extern void arch_send_call_function_single_ipi(int cpu); 97 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); 98 99 static inline int cpu_logical_map(int cpu) 100 { 101 return cpu; 102 } 103 104 extern 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