186 lines
4.6 KiB
C
186 lines
4.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_SMP_H
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#define _ASM_X86_SMP_H
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#ifndef __ASSEMBLY__
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#include <linux/cpumask.h>
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#include <asm/cpumask.h>
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#include <asm/current.h>
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#include <asm/thread_info.h>
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DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_map);
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DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_map);
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DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_die_map);
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/* cpus sharing the last level cache: */
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DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map);
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DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_l2c_shared_map);
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DECLARE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_apicid);
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DECLARE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid);
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struct task_struct;
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struct smp_ops {
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void (*smp_prepare_boot_cpu)(void);
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void (*smp_prepare_cpus)(unsigned max_cpus);
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void (*smp_cpus_done)(unsigned max_cpus);
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void (*stop_other_cpus)(int wait);
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void (*crash_stop_other_cpus)(void);
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void (*smp_send_reschedule)(int cpu);
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void (*cleanup_dead_cpu)(unsigned cpu);
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void (*poll_sync_state)(void);
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int (*kick_ap_alive)(unsigned cpu, struct task_struct *tidle);
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int (*cpu_disable)(void);
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void (*cpu_die)(unsigned int cpu);
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void (*play_dead)(void);
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void (*send_call_func_ipi)(const struct cpumask *mask);
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void (*send_call_func_single_ipi)(int cpu);
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};
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/* Globals due to paravirt */
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extern void set_cpu_sibling_map(int cpu);
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#ifdef CONFIG_SMP
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extern struct smp_ops smp_ops;
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static inline void smp_send_stop(void)
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{
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smp_ops.stop_other_cpus(0);
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}
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static inline void stop_other_cpus(void)
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{
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smp_ops.stop_other_cpus(1);
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}
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static inline void smp_prepare_cpus(unsigned int max_cpus)
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{
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smp_ops.smp_prepare_cpus(max_cpus);
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}
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static inline void smp_cpus_done(unsigned int max_cpus)
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{
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smp_ops.smp_cpus_done(max_cpus);
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}
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static inline int __cpu_disable(void)
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{
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return smp_ops.cpu_disable();
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}
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static inline void __cpu_die(unsigned int cpu)
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{
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if (smp_ops.cpu_die)
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smp_ops.cpu_die(cpu);
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}
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static inline void __noreturn play_dead(void)
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{
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smp_ops.play_dead();
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BUG();
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}
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static inline void arch_smp_send_reschedule(int cpu)
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{
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smp_ops.smp_send_reschedule(cpu);
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}
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static inline void arch_send_call_function_single_ipi(int cpu)
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{
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smp_ops.send_call_func_single_ipi(cpu);
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}
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static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
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{
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smp_ops.send_call_func_ipi(mask);
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}
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void cpu_disable_common(void);
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void native_smp_prepare_boot_cpu(void);
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void smp_prepare_cpus_common(void);
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void native_smp_prepare_cpus(unsigned int max_cpus);
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void native_smp_cpus_done(unsigned int max_cpus);
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int common_cpu_up(unsigned int cpunum, struct task_struct *tidle);
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int native_kick_ap(unsigned int cpu, struct task_struct *tidle);
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int native_cpu_disable(void);
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void __noreturn hlt_play_dead(void);
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void native_play_dead(void);
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void play_dead_common(void);
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void wbinvd_on_cpu(int cpu);
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int wbinvd_on_all_cpus(void);
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void smp_kick_mwait_play_dead(void);
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void native_smp_send_reschedule(int cpu);
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void native_send_call_func_ipi(const struct cpumask *mask);
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void native_send_call_func_single_ipi(int cpu);
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void smp_store_cpu_info(int id);
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asmlinkage __visible void smp_reboot_interrupt(void);
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__visible void smp_reschedule_interrupt(struct pt_regs *regs);
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__visible void smp_call_function_interrupt(struct pt_regs *regs);
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__visible void smp_call_function_single_interrupt(struct pt_regs *r);
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#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
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#define cpu_acpi_id(cpu) per_cpu(x86_cpu_to_acpiid, cpu)
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/*
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* This function is needed by all SMP systems. It must _always_ be valid
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* from the initial startup.
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*/
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#define raw_smp_processor_id() this_cpu_read(pcpu_hot.cpu_number)
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#define __smp_processor_id() __this_cpu_read(pcpu_hot.cpu_number)
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#ifdef CONFIG_X86_32
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extern int safe_smp_processor_id(void);
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#else
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# define safe_smp_processor_id() smp_processor_id()
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#endif
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static inline struct cpumask *cpu_llc_shared_mask(int cpu)
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{
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return per_cpu(cpu_llc_shared_map, cpu);
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}
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static inline struct cpumask *cpu_l2c_shared_mask(int cpu)
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{
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return per_cpu(cpu_l2c_shared_map, cpu);
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}
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#else /* !CONFIG_SMP */
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#define wbinvd_on_cpu(cpu) wbinvd()
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static inline int wbinvd_on_all_cpus(void)
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{
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wbinvd();
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return 0;
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}
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static inline struct cpumask *cpu_llc_shared_mask(int cpu)
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{
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return (struct cpumask *)cpumask_of(0);
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}
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#endif /* CONFIG_SMP */
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#ifdef CONFIG_DEBUG_NMI_SELFTEST
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extern void nmi_selftest(void);
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#else
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#define nmi_selftest() do { } while (0)
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#endif
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extern unsigned int smpboot_control;
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extern unsigned long apic_mmio_base;
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#endif /* !__ASSEMBLY__ */
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/* Control bits for startup_64 */
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#define STARTUP_READ_APICID 0x80000000
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/* Top 8 bits are reserved for control */
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#define STARTUP_PARALLEL_MASK 0xFF000000
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#endif /* _ASM_X86_SMP_H */
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