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/* smp.h: PPC specific SMP stuff.
*
* Taken from asm-sparc/smp.h
*/
#ifndef _PPC_SMP_H
#define _PPC_SMP_H
#include <linux/kernel.h> /* for panic */
#include <linux/tasks.h> /* for NR_CPUS */
#ifdef __SMP__
#ifndef __ASSEMBLY__
extern unsigned long cpu_present_map;
/* per processor PPC parameters we need. */
struct cpuinfo_PPC {
unsigned long loops_per_sec;
unsigned long pvr;
unsigned long *pgd_quick;
unsigned long *pte_quick;
unsigned long pgtable_cache_sz;
};
extern struct cpuinfo_PPC cpu_data[NR_CPUS];
struct klock_info_struct {
unsigned long kernel_flag;
unsigned char akp;
};
extern struct klock_info_struct klock_info;
#define KLOCK_HELD 0xffffffff
#define KLOCK_CLEAR 0x0
#define PROC_CHANGE_PENALTY 20
extern __volatile__ int cpu_number_map[NR_CPUS];
extern __volatile__ int __cpu_logical_map[NR_CPUS];
extern unsigned long smp_proc_in_lock[NR_CPUS];
extern __inline__ int cpu_logical_map(int cpu)
{
return __cpu_logical_map[cpu];
}
extern __inline__ int hard_smp_processor_id(void)
{
int cpuid = 0;
/* assume cpu # 0 for now */
return cpuid;
}
#define smp_processor_id() (current->processor)
extern void smp_message_pass(int target, int msg, unsigned long data, int wait);
#endif /* __ASSEMBLY__ */
#else /* !(__SMP__) */
#ifndef __ASSEMBLY__
extern __inline__ int cpu_logical_map(int cpu)
{
return cpu;
}
#endif
#endif /* !(__SMP__) */
#define NO_PROC_ID 0xFF /* No processor magic marker */
extern void smp_store_cpu_info(int id);
#endif /* !(_PPC_SMP_H) */
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