[deliverable/linux.git] / include / asm-sparc / smp.h

/* 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/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(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)

static inline void xc0(smpfunc_t func) { smp_cross_call(func, 0, 0, 0, 0, 0); }
static inline void xc1(smpfunc_t func, unsigned long arg1)
{ smp_cross_call(func, arg1, 0, 0, 0, 0); }
static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
{ smp_cross_call(func, arg1, arg2, 0, 0, 0); }
static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
			   unsigned long arg3)
{ smp_cross_call(func, arg1, arg2, arg3, 0, 0); }
static 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); }
static 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); }

static inline int smp_call_function(void (*func)(void *info), void *info, int nonatomic, int wait)
{
	xc1((smpfunc_t)func, (unsigned long)info);
	return 0;
}

static inline int cpu_logical_map(int cpu)
{
	return cpu;
}

static 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;
}

static 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
static 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
static 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 raw_smp_processor_id()		(current_thread_info()->cpu)

#define prof_multiplier(__cpu)		cpu_data(__cpu).multiplier
#define prof_counter(__cpu)		cpu_data(__cpu).counter

void smp_setup_cpu_possible_map(void);

#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

#else /* SMP */

#define hard_smp_processor_id()		0
#define smp_setup_cpu_possible_map() do { } while (0)

#endif /* !(SMP) */

#define NO_PROC_ID            0xFF

#endif /* !(_SPARC_SMP_H) */
Commit	Line	Data
1da177e4 LT	1	/* smp.h: Sparc specific SMP stuff.
	2	*
	3	* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
	4	*/
	5
	6	#ifndef _SPARC_SMP_H
	7	#define _SPARC_SMP_H
	8
1da177e4 LT	9	#include <linux/threads.h>
	10	#include <asm/head.h>
	11	#include <asm/btfixup.h>
	12
	13	#ifndef __ASSEMBLY__
	14
	15	#include <linux/cpumask.h>
	16
	17	#endif /* __ASSEMBLY__ */
	18
	19	#ifdef CONFIG_SMP
	20
	21	#ifndef __ASSEMBLY__
	22
	23	#include <asm/ptrace.h>
	24	#include <asm/asi.h>
	25	#include <asm/atomic.h>
	26
	27	/*
	28	* Private routines/data
	29	*/
	30
	31	extern unsigned char boot_cpu_id;
	32	extern cpumask_t phys_cpu_present_map;
	33	#define cpu_possible_map phys_cpu_present_map
	34
	35	typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long,
	36	unsigned long, unsigned long);
	37
	38	/*
	39	* General functions that each host system must provide.
	40	*/
	41
	42	void sun4m_init_smp(void);
	43	void sun4d_init_smp(void);
	44
	45	void smp_callin(void);
	46	void smp_boot_cpus(void);
	47	void smp_store_cpu_info(int);
	48
	49	struct seq_file;
	50	void smp_bogo(struct seq_file *);
	51	void smp_info(struct seq_file *);
	52
	53	BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long)
1da177e4 LT	54	BTFIXUPDEF_CALL(int, __hard_smp_processor_id, void)
	55	BTFIXUPDEF_BLACKBOX(hard_smp_processor_id)
	56	BTFIXUPDEF_BLACKBOX(load_current)
	57
	58	#define smp_cross_call(func,arg1,arg2,arg3,arg4,arg5) BTFIXUP_CALL(smp_cross_call)(func,arg1,arg2,arg3,arg4,arg5)
1da177e4	59
3115624e AB	60	static inline void xc0(smpfunc_t func) { smp_cross_call(func, 0, 0, 0, 0, 0); }
3115624e AB	61	static inline void xc1(smpfunc_t func, unsigned long arg1)
1da177e4	62	{ smp_cross_call(func, arg1, 0, 0, 0, 0); }
3115624e	63	static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
1da177e4	64	{ smp_cross_call(func, arg1, arg2, 0, 0, 0); }
3115624e	65	static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
1da177e4 LT	66	unsigned long arg3)
1da177e4 LT	67	{ smp_cross_call(func, arg1, arg2, arg3, 0, 0); }
3115624e	68	static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
1da177e4 LT	69	unsigned long arg3, unsigned long arg4)
1da177e4 LT	70	{ smp_cross_call(func, arg1, arg2, arg3, arg4, 0); }
3115624e	71	static inline void xc5(smpfunc_t func, unsigned long arg1, unsigned long arg2,
1da177e4 LT	72	unsigned long arg3, unsigned long arg4, unsigned long arg5)
	73	{ smp_cross_call(func, arg1, arg2, arg3, arg4, arg5); }
	74
3115624e	75	static inline int smp_call_function(void (func)(void info), void *info, int nonatomic, int wait)
1da177e4 LT	76	{
	77	xc1((smpfunc_t)func, (unsigned long)info);
	78	return 0;
	79	}
	80
3115624e	81	static inline int cpu_logical_map(int cpu)
1da177e4	82	{
a54123e2	83	return cpu;
1da177e4 LT	84	}
1da177e4 LT	85
3115624e	86	static inline int hard_smp4m_processor_id(void)
1da177e4 LT	87	{
	88	int cpuid;
	89
	90	__asm__ __volatile__("rd %%tbr, %0\n\t"
	91	"srl %0, 12, %0\n\t"
	92	"and %0, 3, %0\n\t" :
	93	"=&r" (cpuid));
	94	return cpuid;
	95	}
	96
3115624e	97	static inline int hard_smp4d_processor_id(void)
1da177e4 LT	98	{
	99	int cpuid;
	100
	101	__asm__ __volatile__("lda [%%g0] %1, %0\n\t" :
	102	"=&r" (cpuid) : "i" (ASI_M_VIKING_TMP1));
	103	return cpuid;
	104	}
	105
	106	#ifndef MODULE
3115624e	107	static inline int hard_smp_processor_id(void)
1da177e4 LT	108	{
	109	int cpuid;
	110
	111	/* Black box - sun4m
	112	__asm__ __volatile__("rd %%tbr, %0\n\t"
	113	"srl %0, 12, %0\n\t"
	114	"and %0, 3, %0\n\t" :
	115	"=&r" (cpuid));
	116	- sun4d
	117	__asm__ __volatile__("lda [%g0] ASI_M_VIKING_TMP1, %0\n\t"
	118	"nop; nop" :
	119	"=&r" (cpuid));
	120	See btfixup.h and btfixupprep.c to understand how a blackbox works.
	121	*/
	122	__asm__ __volatile__("sethi %%hi(___b_hard_smp_processor_id), %0\n\t"
	123	"sethi %%hi(boot_cpu_id), %0\n\t"
	124	"ldub [%0 + %%lo(boot_cpu_id)], %0\n\t" :
	125	"=&r" (cpuid));
	126	return cpuid;
	127	}
	128	#else
3115624e	129	static inline int hard_smp_processor_id(void)
1da177e4 LT	130	{
	131	int cpuid;
	132
	133	__asm__ __volatile__("mov %%o7, %%g1\n\t"
	134	"call ___f___hard_smp_processor_id\n\t"
	135	" nop\n\t"
	136	"mov %%g2, %0\n\t" : "=r"(cpuid) : : "g1", "g2");
	137	return cpuid;
	138	}
	139	#endif
	140
39c715b7	141	#define raw_smp_processor_id() (current_thread_info()->cpu)
1da177e4 LT	142
	143	#define prof_multiplier(__cpu) cpu_data(__cpu).multiplier
	144	#define prof_counter(__cpu) cpu_data(__cpu).counter
	145
7202fb49 BB	146	void smp_setup_cpu_possible_map(void);
7202fb49 BB	147
1da177e4 LT	148	#endif /* !(__ASSEMBLY__) */
	149
	150	/* Sparc specific messages. */
	151	#define MSG_CROSS_CALL 0x0005 /* run func on cpus */
	152
	153	/* Empirical PROM processor mailbox constants. If the per-cpu mailbox
	154	* contains something other than one of these then the ipi is from
	155	* Linux's active_kernel_processor. This facility exists so that
	156	* the boot monitor can capture all the other cpus when one catches
	157	* a watchdog reset or the user enters the monitor using L1-A keys.
	158	*/
	159	#define MBOX_STOPCPU 0xFB
	160	#define MBOX_IDLECPU 0xFC
	161	#define MBOX_IDLECPU2 0xFD
	162	#define MBOX_STOPCPU2 0xFE
	163
7202fb49 BB	164	#else /* SMP */
7202fb49 BB	165
2f4dfe20	166	#define hard_smp_processor_id() 0
7202fb49 BB	167	#define smp_setup_cpu_possible_map() do { } while (0)
	168
	169	#endif /* !(SMP) */
1da177e4 LT	170
	171	#define NO_PROC_ID 0xFF
	172
	173	#endif /* !(_SPARC_SMP_H) */