include/asm-parisc/smp.h

   1 #ifndef __ASM_SMP_H
   2 #define __ASM_SMP_H
   3
   4 #include <linux/config.h>
   5
   6 #if defined(CONFIG_SMP)
   7
   8 /* Page Zero Location PDC will look for the address to branch to when we poke
   9 ** slave CPUs still in "Icache loop".
  10 */
  11 #define PDC_OS_BOOT_RENDEZVOUS     0x10
  12 #define PDC_OS_BOOT_RENDEZVOUS_HI  0x28
  13
  14 #ifndef ASSEMBLY
  15 #include <linux/bitops.h>
  16 #include <linux/threads.h>      /* for NR_CPUS */
  17 #include <linux/cpumask.h>
  18 typedef unsigned long address_t;
  19
  20 extern cpumask_t cpu_online_map;
  21
  22
  23 /*
  24  *      Private routines/data
  25  *
  26  *      physical and logical are equivalent until we support CPU hotplug.
  27  */
  28 #define cpu_number_map(cpu)     (cpu)
  29 #define cpu_logical_map(cpu)    (cpu)
  30
  31 extern void smp_send_reschedule(int cpu);
  32 extern void smp_send_all_nop(void);
  33
  34 #endif /* !ASSEMBLY */
  35
  36 /*
  37  *      This magic constant controls our willingness to transfer
  38  *      a process across CPUs. Such a transfer incurs cache and tlb
  39  *      misses. The current value is inherited from i386. Still needs
  40  *      to be tuned for parisc.
  41  */
  42
  43 #define PROC_CHANGE_PENALTY     15              /* Schedule penalty */
  44
  45 #undef ENTRY_SYS_CPUS
  46 #ifdef ENTRY_SYS_CPUS
  47 #define STATE_RENDEZVOUS                        0
  48 #define STATE_STOPPED                           1
  49 #define STATE_RUNNING                           2
  50 #define STATE_HALTED                            3
  51 #endif
  52
  53 extern unsigned long cpu_present_mask;
  54
  55 #define raw_smp_processor_id()  (current_thread_info()->cpu)
  56
  57 #else /* CONFIG_SMP */
  58
  59 static inline void smp_send_all_nop(void) { return; }
  60
  61 #endif
  62
  63 #define NO_PROC_ID              0xFF            /* No processor magic marker */
  64 #define ANY_PROC_ID             0xFF            /* Any processor magic marker */
  65 static inline int __cpu_disable (void) {
  66   return 0;
  67 }
  68 static inline void __cpu_die (unsigned int cpu) {
  69   while(1)
  70     ;
  71 }
  72 extern int __cpu_up (unsigned int cpu);
  73
  74 #endif /*  __ASM_SMP_H */