1/* SPDX-License-Identifier: GPL-2.0 */
  2/* smp.h: Sparc specific SMP stuff.
  3 *
  4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
  5 */
  6
  7#ifndef _SPARC_SMP_H
  8#define _SPARC_SMP_H
  9
 10#include <linux/threads.h>
 11#include <asm/head.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
 31extern unsigned char boot_cpu_id;
 32extern volatile unsigned long cpu_callin_map[NR_CPUS];
 33extern cpumask_t smp_commenced_mask;
 34extern struct linux_prom_registers smp_penguin_ctable;
 35
 
 
 
 36void cpu_panic(void);
 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_store_cpu_info(int);
 47
 48void smp_resched_interrupt(void);
 49void smp_call_function_single_interrupt(void);
 50void smp_call_function_interrupt(void);
 51
 52struct seq_file;
 53void smp_bogo(struct seq_file *);
 54void smp_info(struct seq_file *);
 55
 56struct sparc32_ipi_ops {
 57	void (*cross_call)(void *func, cpumask_t mask, unsigned long arg1,
 58			   unsigned long arg2, unsigned long arg3,
 59			   unsigned long arg4);
 60	void (*resched)(int cpu);
 61	void (*single)(int cpu);
 62	void (*mask_one)(int cpu);
 63};
 64extern const struct sparc32_ipi_ops *sparc32_ipi_ops;
 65
 66static inline void xc0(void *func)
 67{
 68	sparc32_ipi_ops->cross_call(func, *cpu_online_mask, 0, 0, 0, 0);
 69}
 70
 71static inline void xc1(void *func, unsigned long arg1)
 72{
 73	sparc32_ipi_ops->cross_call(func, *cpu_online_mask, arg1, 0, 0, 0);
 74}
 75static inline void xc2(void *func, unsigned long arg1, unsigned long arg2)
 76{
 77	sparc32_ipi_ops->cross_call(func, *cpu_online_mask, arg1, arg2, 0, 0);
 78}
 79
 80static inline void xc3(void *func, unsigned long arg1, unsigned long arg2,
 81		       unsigned long arg3)
 82{
 83	sparc32_ipi_ops->cross_call(func, *cpu_online_mask,
 84				    arg1, arg2, arg3, 0);
 85}
 86
 87static inline void xc4(void *func, unsigned long arg1, unsigned long arg2,
 88		       unsigned long arg3, unsigned long arg4)
 89{
 90	sparc32_ipi_ops->cross_call(func, *cpu_online_mask,
 91				    arg1, arg2, arg3, arg4);
 92}
 93
 94void arch_send_call_function_single_ipi(int cpu);
 95void arch_send_call_function_ipi_mask(const struct cpumask *mask);
 96
 97static inline int cpu_logical_map(int cpu)
 98{
 99	return cpu;
100}
101
102int hard_smp_processor_id(void);
103
104#define raw_smp_processor_id()		(current_thread_info()->cpu)
105
106void smp_setup_cpu_possible_map(void);
107
108#endif /* !(__ASSEMBLY__) */
109
110/* Sparc specific messages. */
111#define MSG_CROSS_CALL         0x0005       /* run func on cpus */
112
113/* Empirical PROM processor mailbox constants.  If the per-cpu mailbox
114 * contains something other than one of these then the ipi is from
115 * Linux's active_kernel_processor.  This facility exists so that
116 * the boot monitor can capture all the other cpus when one catches
117 * a watchdog reset or the user enters the monitor using L1-A keys.
118 */
119#define MBOX_STOPCPU          0xFB
120#define MBOX_IDLECPU          0xFC
121#define MBOX_IDLECPU2         0xFD
122#define MBOX_STOPCPU2         0xFE
123
124#else /* SMP */
125
126#define hard_smp_processor_id()		0
127#define smp_setup_cpu_possible_map() do { } while (0)
128
129#endif /* !(SMP) */
130#endif /* !(_SPARC_SMP_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
 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
 30extern unsigned char boot_cpu_id;
 31extern volatile unsigned long cpu_callin_map[NR_CPUS];
 32extern cpumask_t smp_commenced_mask;
 33extern struct linux_prom_registers smp_penguin_ctable;
 34
 35typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long,
 36		       unsigned long, unsigned long);
 37
 38void cpu_panic(void);
 39
 40/*
 41 *	General functions that each host system must provide.
 42 */
 43
 44void sun4m_init_smp(void);
 45void sun4d_init_smp(void);
 46
 47void smp_callin(void);
 48void smp_store_cpu_info(int);
 49
 50void smp_resched_interrupt(void);
 51void smp_call_function_single_interrupt(void);
 52void smp_call_function_interrupt(void);
 53
 54struct seq_file;
 55void smp_bogo(struct seq_file *);
 56void smp_info(struct seq_file *);
 57
 58struct 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};
 66extern const struct sparc32_ipi_ops *sparc32_ipi_ops;
 67
 68static inline void xc0(smpfunc_t func)
 69{
 70	sparc32_ipi_ops->cross_call(func, *cpu_online_mask, 0, 0, 0, 0);
 71}
 72
 73static 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}
 77static 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
 82static 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
 89static 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
 96void arch_send_call_function_single_ipi(int cpu);
 97void arch_send_call_function_ipi_mask(const struct cpumask *mask);
 98
 99static inline int cpu_logical_map(int cpu)
100{
101	return cpu;
102}
103
104int hard_smp_processor_id(void);
105
106#define raw_smp_processor_id()		(current_thread_info()->cpu)
107
108void 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) */