18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * Copyright IBM Corp. 1999, 2012 48c2ecf20Sopenharmony_ci * Author(s): Denis Joseph Barrow, 58c2ecf20Sopenharmony_ci * Martin Schwidefsky <schwidefsky@de.ibm.com>, 68c2ecf20Sopenharmony_ci * Heiko Carstens <heiko.carstens@de.ibm.com>, 78c2ecf20Sopenharmony_ci */ 88c2ecf20Sopenharmony_ci#ifndef __ASM_SMP_H 98c2ecf20Sopenharmony_ci#define __ASM_SMP_H 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ci#include <asm/sigp.h> 128c2ecf20Sopenharmony_ci#include <asm/lowcore.h> 138c2ecf20Sopenharmony_ci#include <asm/processor.h> 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci#define raw_smp_processor_id() (S390_lowcore.cpu_nr) 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ciextern struct mutex smp_cpu_state_mutex; 188c2ecf20Sopenharmony_ciextern unsigned int smp_cpu_mt_shift; 198c2ecf20Sopenharmony_ciextern unsigned int smp_cpu_mtid; 208c2ecf20Sopenharmony_ciextern __vector128 __initdata boot_cpu_vector_save_area[__NUM_VXRS]; 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ciextern int __cpu_up(unsigned int cpu, struct task_struct *tidle); 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_ciextern void arch_send_call_function_single_ipi(int cpu); 258c2ecf20Sopenharmony_ciextern void arch_send_call_function_ipi_mask(const struct cpumask *mask); 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ciextern void smp_call_online_cpu(void (*func)(void *), void *); 288c2ecf20Sopenharmony_ciextern void smp_call_ipl_cpu(void (*func)(void *), void *); 298c2ecf20Sopenharmony_ciextern void smp_emergency_stop(void); 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ciextern int smp_find_processor_id(u16 address); 328c2ecf20Sopenharmony_ciextern int smp_store_status(int cpu); 338c2ecf20Sopenharmony_ciextern void smp_save_dump_cpus(void); 348c2ecf20Sopenharmony_ciextern void smp_yield_cpu(int cpu); 358c2ecf20Sopenharmony_ciextern void smp_cpu_set_polarization(int cpu, int val); 368c2ecf20Sopenharmony_ciextern int smp_cpu_get_polarization(int cpu); 378c2ecf20Sopenharmony_ciextern int smp_cpu_get_cpu_address(int cpu); 388c2ecf20Sopenharmony_ciextern void smp_fill_possible_mask(void); 398c2ecf20Sopenharmony_ciextern void smp_detect_cpus(void); 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_cistatic inline void smp_stop_cpu(void) 428c2ecf20Sopenharmony_ci{ 438c2ecf20Sopenharmony_ci u16 pcpu = stap(); 448c2ecf20Sopenharmony_ci 458c2ecf20Sopenharmony_ci for (;;) { 468c2ecf20Sopenharmony_ci __pcpu_sigp(pcpu, SIGP_STOP, 0, NULL); 478c2ecf20Sopenharmony_ci cpu_relax(); 488c2ecf20Sopenharmony_ci } 498c2ecf20Sopenharmony_ci} 508c2ecf20Sopenharmony_ci 518c2ecf20Sopenharmony_ci/* Return thread 0 CPU number as base CPU */ 528c2ecf20Sopenharmony_cistatic inline int smp_get_base_cpu(int cpu) 538c2ecf20Sopenharmony_ci{ 548c2ecf20Sopenharmony_ci return cpu - (cpu % (smp_cpu_mtid + 1)); 558c2ecf20Sopenharmony_ci} 568c2ecf20Sopenharmony_ci 578c2ecf20Sopenharmony_cistatic inline void smp_cpus_done(unsigned int max_cpus) 588c2ecf20Sopenharmony_ci{ 598c2ecf20Sopenharmony_ci} 608c2ecf20Sopenharmony_ci 618c2ecf20Sopenharmony_ciextern int smp_rescan_cpus(void); 628c2ecf20Sopenharmony_ciextern void __noreturn cpu_die(void); 638c2ecf20Sopenharmony_ciextern void __cpu_die(unsigned int cpu); 648c2ecf20Sopenharmony_ciextern int __cpu_disable(void); 658c2ecf20Sopenharmony_ciextern void schedule_mcck_handler(void); 668c2ecf20Sopenharmony_ci 678c2ecf20Sopenharmony_ci#endif /* __ASM_SMP_H */ 68