mirror of
https://github.com/torvalds/linux.git
synced 2024-11-08 21:21:47 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
177 lines
4.9 KiB
C
177 lines
4.9 KiB
C
/* smp.h: Sparc specific SMP stuff.
|
|
*
|
|
* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
|
|
*/
|
|
|
|
#ifndef _SPARC_SMP_H
|
|
#define _SPARC_SMP_H
|
|
|
|
#include <linux/config.h>
|
|
#include <linux/threads.h>
|
|
#include <asm/head.h>
|
|
#include <asm/btfixup.h>
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <linux/cpumask.h>
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <asm/ptrace.h>
|
|
#include <asm/asi.h>
|
|
#include <asm/atomic.h>
|
|
|
|
/*
|
|
* Private routines/data
|
|
*/
|
|
|
|
extern unsigned char boot_cpu_id;
|
|
extern cpumask_t phys_cpu_present_map;
|
|
#define cpu_possible_map phys_cpu_present_map
|
|
|
|
typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long,
|
|
unsigned long, unsigned long);
|
|
|
|
/*
|
|
* General functions that each host system must provide.
|
|
*/
|
|
|
|
void sun4m_init_smp(void);
|
|
void sun4d_init_smp(void);
|
|
|
|
void smp_callin(void);
|
|
void smp_boot_cpus(void);
|
|
void smp_store_cpu_info(int);
|
|
|
|
struct seq_file;
|
|
void smp_bogo(struct seq_file *);
|
|
void smp_info(struct seq_file *);
|
|
|
|
BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long)
|
|
BTFIXUPDEF_CALL(void, smp_message_pass, int, int, unsigned long, int)
|
|
BTFIXUPDEF_CALL(int, __hard_smp_processor_id, void)
|
|
BTFIXUPDEF_BLACKBOX(hard_smp_processor_id)
|
|
BTFIXUPDEF_BLACKBOX(load_current)
|
|
|
|
#define smp_cross_call(func,arg1,arg2,arg3,arg4,arg5) BTFIXUP_CALL(smp_cross_call)(func,arg1,arg2,arg3,arg4,arg5)
|
|
#define smp_message_pass(target,msg,data,wait) BTFIXUP_CALL(smp_message_pass)(target,msg,data,wait)
|
|
|
|
extern __inline__ void xc0(smpfunc_t func) { smp_cross_call(func, 0, 0, 0, 0, 0); }
|
|
extern __inline__ void xc1(smpfunc_t func, unsigned long arg1)
|
|
{ smp_cross_call(func, arg1, 0, 0, 0, 0); }
|
|
extern __inline__ void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
|
|
{ smp_cross_call(func, arg1, arg2, 0, 0, 0); }
|
|
extern __inline__ void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
|
|
unsigned long arg3)
|
|
{ smp_cross_call(func, arg1, arg2, arg3, 0, 0); }
|
|
extern __inline__ void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
|
|
unsigned long arg3, unsigned long arg4)
|
|
{ smp_cross_call(func, arg1, arg2, arg3, arg4, 0); }
|
|
extern __inline__ void xc5(smpfunc_t func, unsigned long arg1, unsigned long arg2,
|
|
unsigned long arg3, unsigned long arg4, unsigned long arg5)
|
|
{ smp_cross_call(func, arg1, arg2, arg3, arg4, arg5); }
|
|
|
|
extern __inline__ int smp_call_function(void (*func)(void *info), void *info, int nonatomic, int wait)
|
|
{
|
|
xc1((smpfunc_t)func, (unsigned long)info);
|
|
return 0;
|
|
}
|
|
|
|
extern __volatile__ int __cpu_number_map[NR_CPUS];
|
|
extern __volatile__ int __cpu_logical_map[NR_CPUS];
|
|
|
|
extern __inline__ int cpu_logical_map(int cpu)
|
|
{
|
|
return __cpu_logical_map[cpu];
|
|
}
|
|
extern __inline__ int cpu_number_map(int cpu)
|
|
{
|
|
return __cpu_number_map[cpu];
|
|
}
|
|
|
|
extern __inline__ int hard_smp4m_processor_id(void)
|
|
{
|
|
int cpuid;
|
|
|
|
__asm__ __volatile__("rd %%tbr, %0\n\t"
|
|
"srl %0, 12, %0\n\t"
|
|
"and %0, 3, %0\n\t" :
|
|
"=&r" (cpuid));
|
|
return cpuid;
|
|
}
|
|
|
|
extern __inline__ int hard_smp4d_processor_id(void)
|
|
{
|
|
int cpuid;
|
|
|
|
__asm__ __volatile__("lda [%%g0] %1, %0\n\t" :
|
|
"=&r" (cpuid) : "i" (ASI_M_VIKING_TMP1));
|
|
return cpuid;
|
|
}
|
|
|
|
#ifndef MODULE
|
|
extern __inline__ int hard_smp_processor_id(void)
|
|
{
|
|
int cpuid;
|
|
|
|
/* Black box - sun4m
|
|
__asm__ __volatile__("rd %%tbr, %0\n\t"
|
|
"srl %0, 12, %0\n\t"
|
|
"and %0, 3, %0\n\t" :
|
|
"=&r" (cpuid));
|
|
- sun4d
|
|
__asm__ __volatile__("lda [%g0] ASI_M_VIKING_TMP1, %0\n\t"
|
|
"nop; nop" :
|
|
"=&r" (cpuid));
|
|
See btfixup.h and btfixupprep.c to understand how a blackbox works.
|
|
*/
|
|
__asm__ __volatile__("sethi %%hi(___b_hard_smp_processor_id), %0\n\t"
|
|
"sethi %%hi(boot_cpu_id), %0\n\t"
|
|
"ldub [%0 + %%lo(boot_cpu_id)], %0\n\t" :
|
|
"=&r" (cpuid));
|
|
return cpuid;
|
|
}
|
|
#else
|
|
extern __inline__ int hard_smp_processor_id(void)
|
|
{
|
|
int cpuid;
|
|
|
|
__asm__ __volatile__("mov %%o7, %%g1\n\t"
|
|
"call ___f___hard_smp_processor_id\n\t"
|
|
" nop\n\t"
|
|
"mov %%g2, %0\n\t" : "=r"(cpuid) : : "g1", "g2");
|
|
return cpuid;
|
|
}
|
|
#endif
|
|
|
|
#define smp_processor_id() (current_thread_info()->cpu)
|
|
|
|
#define prof_multiplier(__cpu) cpu_data(__cpu).multiplier
|
|
#define prof_counter(__cpu) cpu_data(__cpu).counter
|
|
|
|
#endif /* !(__ASSEMBLY__) */
|
|
|
|
/* Sparc specific messages. */
|
|
#define MSG_CROSS_CALL 0x0005 /* run func on cpus */
|
|
|
|
/* Empirical PROM processor mailbox constants. If the per-cpu mailbox
|
|
* contains something other than one of these then the ipi is from
|
|
* Linux's active_kernel_processor. This facility exists so that
|
|
* the boot monitor can capture all the other cpus when one catches
|
|
* a watchdog reset or the user enters the monitor using L1-A keys.
|
|
*/
|
|
#define MBOX_STOPCPU 0xFB
|
|
#define MBOX_IDLECPU 0xFC
|
|
#define MBOX_IDLECPU2 0xFD
|
|
#define MBOX_STOPCPU2 0xFE
|
|
|
|
#endif /* SMP */
|
|
|
|
#define NO_PROC_ID 0xFF
|
|
|
|
#endif /* !(_SPARC_SMP_H) */
|