18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef __ASM_SMP_H 38c2ecf20Sopenharmony_ci#define __ASM_SMP_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ciextern int init_per_cpu(int cpuid); 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ci#if defined(CONFIG_SMP) 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ci/* Page Zero Location PDC will look for the address to branch to when we poke 108c2ecf20Sopenharmony_ci** slave CPUs still in "Icache loop". 118c2ecf20Sopenharmony_ci*/ 128c2ecf20Sopenharmony_ci#define PDC_OS_BOOT_RENDEZVOUS 0x10 138c2ecf20Sopenharmony_ci#define PDC_OS_BOOT_RENDEZVOUS_HI 0x28 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci#ifndef ASSEMBLY 168c2ecf20Sopenharmony_ci#include <linux/bitops.h> 178c2ecf20Sopenharmony_ci#include <linux/threads.h> /* for NR_CPUS */ 188c2ecf20Sopenharmony_ci#include <linux/cpumask.h> 198c2ecf20Sopenharmony_citypedef unsigned long address_t; 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci/* 238c2ecf20Sopenharmony_ci * Private routines/data 248c2ecf20Sopenharmony_ci * 258c2ecf20Sopenharmony_ci * physical and logical are equivalent until we support CPU hotplug. 268c2ecf20Sopenharmony_ci */ 278c2ecf20Sopenharmony_ci#define cpu_number_map(cpu) (cpu) 288c2ecf20Sopenharmony_ci#define cpu_logical_map(cpu) (cpu) 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ciextern void smp_send_all_nop(void); 318c2ecf20Sopenharmony_ci 328c2ecf20Sopenharmony_ciextern void arch_send_call_function_single_ipi(int cpu); 338c2ecf20Sopenharmony_ciextern void arch_send_call_function_ipi_mask(const struct cpumask *mask); 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_ci#endif /* !ASSEMBLY */ 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci#define raw_smp_processor_id() (current_thread_info()->cpu) 388c2ecf20Sopenharmony_ci 398c2ecf20Sopenharmony_ci#else /* CONFIG_SMP */ 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_cistatic inline void smp_send_all_nop(void) { return; } 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_ci#endif 448c2ecf20Sopenharmony_ci 458c2ecf20Sopenharmony_ci#define NO_PROC_ID 0xFF /* No processor magic marker */ 468c2ecf20Sopenharmony_ci#define ANY_PROC_ID 0xFF /* Any processor magic marker */ 478c2ecf20Sopenharmony_cistatic inline int __cpu_disable (void) { 488c2ecf20Sopenharmony_ci return 0; 498c2ecf20Sopenharmony_ci} 508c2ecf20Sopenharmony_cistatic inline void __cpu_die (unsigned int cpu) { 518c2ecf20Sopenharmony_ci while(1) 528c2ecf20Sopenharmony_ci ; 538c2ecf20Sopenharmony_ci} 548c2ecf20Sopenharmony_ci 558c2ecf20Sopenharmony_ci#endif /* __ASM_SMP_H */ 56