arch/sh/include/asm/smp-ops.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_SH_SMP_OPS_H
   3 #define __ASM_SH_SMP_OPS_H
   4
   5 struct plat_smp_ops {
   6         void (*smp_setup)(void);
   7         unsigned int (*smp_processor_id)(void);
   8         void (*prepare_cpus)(unsigned int max_cpus);
   9         void (*start_cpu)(unsigned int cpu, unsigned long entry_point);
  10         void (*send_ipi)(unsigned int cpu, unsigned int message);
  11         int (*cpu_disable)(unsigned int cpu);
  12         void (*cpu_die)(unsigned int cpu);
  13         void (*play_dead)(void);
  14 };
  15
  16 extern struct plat_smp_ops *mp_ops;
  17 extern struct plat_smp_ops shx3_smp_ops;
  18
  19 #ifdef CONFIG_SMP
  20
  21 static inline void plat_smp_setup(void)
  22 {
  23         BUG_ON(!mp_ops);
  24         mp_ops->smp_setup();
  25 }
  26
  27 static inline void __noreturn play_dead(void)
  28 {
  29         mp_ops->play_dead();
  30         BUG();
  31 }
  32
  33 extern void register_smp_ops(struct plat_smp_ops *ops);
  34
  35 #else
  36
  37 static inline void plat_smp_setup(void)
  38 {
  39         /* UP, nothing to do ... */
  40 }
  41
  42 static inline void register_smp_ops(struct plat_smp_ops *ops)
  43 {
  44 }
  45
  46 static inline void __noreturn play_dead(void)
  47 {
  48         BUG();
  49 }
  50
  51 #endif /* CONFIG_SMP */
  52
  53 #endif /* __ASM_SH_SMP_OPS_H */