1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3  * smp.h: PowerPC-specific SMP code.
9  * Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com>
34 extern int cpu_to_chip_id(int cpu);
44 	void  (*message_pass)(int cpu, int msg);
46 	void  (*cause_ipi)(int cpu);
48 	int   (*cause_nmi_ipi)(int cpu);
50 	int   (*kick_cpu)(int nr);
51 	int   (*prepare_cpu)(int nr);
52 	void  (*setup_cpu)(int nr);
57 	void  (*cpu_die)(unsigned int nr);
58 	int   (*cpu_bootable)(unsigned int nr);
67 extern int smp_send_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us);
68 extern int smp_send_safe_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us);
78 void generic_cpu_die(unsigned int cpu);
79 void generic_set_cpu_dead(unsigned int cpu);
80 void generic_set_cpu_up(unsigned int cpu);
81 int generic_check_cpu_restart(unsigned int cpu);
82 int is_cpu_dead(unsigned int cpu);
88 #define raw_smp_processor_id()	(local_paca->paca_index)
89 #define hard_smp_processor_id() (get_paca()->hw_cpu_id)
91 /* 32-bit */
94 #define raw_smp_processor_id()		(current_thread_info()->cpu)
97 static inline int get_hard_smp_processor_id(int cpu)  in get_hard_smp_processor_id()  argument
99 	return smp_hw_index[cpu];  in get_hard_smp_processor_id()
102 static inline void set_hard_smp_processor_id(int cpu, int phys)  in set_hard_smp_processor_id()  argument
104 	smp_hw_index[cpu] = phys;  in set_hard_smp_processor_id()
113 static inline struct cpumask *cpu_sibling_mask(int cpu)  in cpu_sibling_mask()  argument
115 	return per_cpu(cpu_sibling_map, cpu);  in cpu_sibling_mask()
118 static inline struct cpumask *cpu_core_mask(int cpu)  in cpu_core_mask()  argument
120 	return per_cpu(cpu_core_map, cpu);  in cpu_core_mask()
123 static inline struct cpumask *cpu_l2_cache_mask(int cpu)  in cpu_l2_cache_mask()  argument
125 	return per_cpu(cpu_l2_cache_map, cpu);  in cpu_l2_cache_mask()
128 static inline struct cpumask *cpu_smallcore_mask(int cpu)  in cpu_smallcore_mask()  argument
130 	return per_cpu(cpu_smallcore_map, cpu);  in cpu_smallcore_mask()
133 extern int cpu_to_core_id(int cpu);
141 static inline const struct cpumask *cpu_smt_mask(int cpu)  in cpu_smt_mask()  argument
144 		return per_cpu(cpu_smallcore_map, cpu);  in cpu_smt_mask()
146 	return per_cpu(cpu_sibling_map, cpu);  in cpu_smt_mask()
153  * in /proc/interrupts will be wrong!!! --Troy */
162 #define NMI_IPI_ALL_OTHERS		-2
175 extern void smp_muxed_ipi_message_pass(int cpu, int msg);
176 extern void smp_muxed_ipi_set_message(int cpu, int msg);
185 extern void __cpu_die(unsigned int cpu);
193 static inline const struct cpumask *cpu_sibling_mask(int cpu)  in cpu_sibling_mask()  argument
195 	return cpumask_of(cpu);  in cpu_sibling_mask()
198 static inline const struct cpumask *cpu_smallcore_mask(int cpu)  in cpu_smallcore_mask()  argument
200 	return cpumask_of(cpu);  in cpu_smallcore_mask()
203 static inline const struct cpumask *cpu_l2_cache_mask(int cpu)  in cpu_l2_cache_mask()  argument
205 	return cpumask_of(cpu);  in cpu_l2_cache_mask()
210 static inline int get_hard_smp_processor_id(int cpu)  in get_hard_smp_processor_id()  argument
212 	return paca_ptrs[cpu]->hw_cpu_id;  in get_hard_smp_processor_id()
215 static inline void set_hard_smp_processor_id(int cpu, int phys)  in set_hard_smp_processor_id()  argument
217 	paca_ptrs[cpu]->hw_cpu_id = phys;  in set_hard_smp_processor_id()
220 /* 32-bit */
223 static inline int get_hard_smp_processor_id(int cpu)  in get_hard_smp_processor_id()  argument
228 static inline void set_hard_smp_processor_id(int cpu, int phys)  in set_hard_smp_processor_id()  argument
244 extern void smp_mpic_setup_cpu(int cpu);
245 extern int smp_generic_kick_cpu(int nr);
246 extern int smp_generic_cpu_bootable(unsigned int nr);
254 extern void arch_send_call_function_single_ipi(int cpu);
257 /* Definitions relative to the secondary CPU spin loop
259  * 64-bit but defining them all here doesn't harm