arch/parisc/include/asm/smp.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_SMP_H
   3 #define __ASM_SMP_H
   4
   5 extern int init_per_cpu(int cpuid);
   6
   7 #if defined(CONFIG_SMP)
   8
   9 /* Page Zero Location PDC will look for the address to branch to when we poke
  10 ** slave CPUs still in "Icache loop".
  11 */
  12 #define PDC_OS_BOOT_RENDEZVOUS     0x10
  13 #define PDC_OS_BOOT_RENDEZVOUS_HI  0x28
  14
  15 #ifndef ASSEMBLY
  16 #include <linux/bitops.h>
  17 #include <linux/threads.h>      /* for NR_CPUS */
  18 #include <linux/cpumask.h>
  19 typedef unsigned long address_t;
  20
  21
  22 /*
  23  *      Private routines/data
  24  *
  25  *      physical and logical are equivalent until we support CPU hotplug.
  26  */
  27 #define cpu_number_map(cpu)     (cpu)
  28 #define cpu_logical_map(cpu)    (cpu)
  29
  30 extern void smp_send_all_nop(void);
  31
  32 extern void arch_send_call_function_single_ipi(int cpu);
  33 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
  34
  35 #endif /* !ASSEMBLY */
  36
  37 #define raw_smp_processor_id()  (current_thread_info()->cpu)
  38
  39 #else /* CONFIG_SMP */
  40
  41 static inline void smp_send_all_nop(void) { return; }
  42
  43 #endif
  44
  45 #define NO_PROC_ID              0xFF            /* No processor magic marker */
  46 #define ANY_PROC_ID             0xFF            /* Any processor magic marker */
  47 static inline int __cpu_disable (void) {
  48   return 0;
  49 }
  50 static inline void __cpu_die (unsigned int cpu) {
  51   while(1)
  52     ;
  53 }
  54
  55 #endif /*  __ASM_SMP_H */