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/* smp.h: Sparc64 specific SMP stuff.
*
* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
*/
#ifndef _SPARC64_SMP_H
#define _SPARC64_SMP_H
#include <linux/config.h>
#include <linux/threads.h>
#include <asm/asi.h>
#include <asm/starfire.h>
#include <asm/spitfire.h>
#ifndef __ASSEMBLY__
#include <linux/cpumask.h>
#include <linux/cache.h>
#endif /* !(__ASSEMBLY__) */
#ifdef CONFIG_SMP
#ifndef __ASSEMBLY__
/*
* Private routines/data
*/
#include <asm/bitops.h>
#include <asm/atomic.h>
extern cpumask_t phys_cpu_present_map;
#define cpu_possible_map phys_cpu_present_map
/*
* General functions that each host system must provide.
*/
static __inline__ int hard_smp_processor_id(void)
{
if (tlb_type == cheetah || tlb_type == cheetah_plus) {
unsigned long cfg, ver;
__asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
if ((ver >> 32) == 0x003e0016) {
__asm__ __volatile__("ldxa [%%g0] %1, %0"
: "=r" (cfg)
: "i" (ASI_JBUS_CONFIG));
return ((cfg >> 17) & 0x1f);
} else {
__asm__ __volatile__("ldxa [%%g0] %1, %0"
: "=r" (cfg)
: "i" (ASI_SAFARI_CONFIG));
return ((cfg >> 17) & 0x3ff);
}
} else if (this_is_starfire != 0) {
return starfire_hard_smp_processor_id();
} else {
unsigned long upaconfig;
__asm__ __volatile__("ldxa [%%g0] %1, %0"
: "=r" (upaconfig)
: "i" (ASI_UPA_CONFIG));
return ((upaconfig >> 17) & 0x1f);
}
}
#define smp_processor_id() (current_thread_info()->cpu)
#endif /* !(__ASSEMBLY__) */
#endif /* !(CONFIG_SMP) */
#define NO_PROC_ID 0xFF
#endif /* !(_SPARC64_SMP_H) */
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