[mirror_ubuntu-zesty-kernel.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(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)

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 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)
	54	BTFIXUPDEF_CALL(void, smp_message_pass, int, int, unsigned long, int)
	55	BTFIXUPDEF_CALL(int, __hard_smp_processor_id, void)
	56	BTFIXUPDEF_BLACKBOX(hard_smp_processor_id)
	57	BTFIXUPDEF_BLACKBOX(load_current)
	58
	59	#define smp_cross_call(func,arg1,arg2,arg3,arg4,arg5) BTFIXUP_CALL(smp_cross_call)(func,arg1,arg2,arg3,arg4,arg5)
	60	#define smp_message_pass(target,msg,data,wait) BTFIXUP_CALL(smp_message_pass)(target,msg,data,wait)
	61
3115624e AB	62	static inline void xc0(smpfunc_t func) { smp_cross_call(func, 0, 0, 0, 0, 0); }
3115624e AB	63	static inline void xc1(smpfunc_t func, unsigned long arg1)
1da177e4	64	{ smp_cross_call(func, arg1, 0, 0, 0, 0); }
3115624e	65	static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
1da177e4	66	{ smp_cross_call(func, arg1, arg2, 0, 0, 0); }
3115624e	67	static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
1da177e4 LT	68	unsigned long arg3)
1da177e4 LT	69	{ smp_cross_call(func, arg1, arg2, arg3, 0, 0); }
3115624e	70	static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
1da177e4 LT	71	unsigned long arg3, unsigned long arg4)
1da177e4 LT	72	{ smp_cross_call(func, arg1, arg2, arg3, arg4, 0); }
3115624e	73	static inline void xc5(smpfunc_t func, unsigned long arg1, unsigned long arg2,
1da177e4 LT	74	unsigned long arg3, unsigned long arg4, unsigned long arg5)
	75	{ smp_cross_call(func, arg1, arg2, arg3, arg4, arg5); }
	76
3115624e	77	static inline int smp_call_function(void (func)(void info), void *info, int nonatomic, int wait)
1da177e4 LT	78	{
	79	xc1((smpfunc_t)func, (unsigned long)info);
	80	return 0;
	81	}
	82
3115624e	83	static inline int cpu_logical_map(int cpu)
1da177e4	84	{
a54123e2	85	return cpu;
1da177e4 LT	86	}
1da177e4 LT	87
3115624e	88	static inline int hard_smp4m_processor_id(void)
1da177e4 LT	89	{
	90	int cpuid;
	91
	92	__asm__ __volatile__("rd %%tbr, %0\n\t"
	93	"srl %0, 12, %0\n\t"
	94	"and %0, 3, %0\n\t" :
	95	"=&r" (cpuid));
	96	return cpuid;
	97	}
	98
3115624e	99	static inline int hard_smp4d_processor_id(void)
1da177e4 LT	100	{
	101	int cpuid;
	102
	103	__asm__ __volatile__("lda [%%g0] %1, %0\n\t" :
	104	"=&r" (cpuid) : "i" (ASI_M_VIKING_TMP1));
	105	return cpuid;
	106	}
	107
	108	#ifndef MODULE
3115624e	109	static inline int hard_smp_processor_id(void)
1da177e4 LT	110	{
	111	int cpuid;
	112
	113	/* Black box - sun4m
	114	__asm__ __volatile__("rd %%tbr, %0\n\t"
	115	"srl %0, 12, %0\n\t"
	116	"and %0, 3, %0\n\t" :
	117	"=&r" (cpuid));
	118	- sun4d
	119	__asm__ __volatile__("lda [%g0] ASI_M_VIKING_TMP1, %0\n\t"
	120	"nop; nop" :
	121	"=&r" (cpuid));
	122	See btfixup.h and btfixupprep.c to understand how a blackbox works.
	123	*/
	124	__asm__ __volatile__("sethi %%hi(___b_hard_smp_processor_id), %0\n\t"
	125	"sethi %%hi(boot_cpu_id), %0\n\t"
	126	"ldub [%0 + %%lo(boot_cpu_id)], %0\n\t" :
	127	"=&r" (cpuid));
	128	return cpuid;
	129	}
	130	#else
3115624e	131	static inline int hard_smp_processor_id(void)
1da177e4 LT	132	{
	133	int cpuid;
	134
	135	__asm__ __volatile__("mov %%o7, %%g1\n\t"
	136	"call ___f___hard_smp_processor_id\n\t"
	137	" nop\n\t"
	138	"mov %%g2, %0\n\t" : "=r"(cpuid) : : "g1", "g2");
	139	return cpuid;
	140	}
	141	#endif
	142
39c715b7	143	#define raw_smp_processor_id() (current_thread_info()->cpu)
1da177e4 LT	144
	145	#define prof_multiplier(__cpu) cpu_data(__cpu).multiplier
	146	#define prof_counter(__cpu) cpu_data(__cpu).counter
	147
7202fb49 BB	148	void smp_setup_cpu_possible_map(void);
7202fb49 BB	149
1da177e4 LT	150	#endif /* !(__ASSEMBLY__) */
	151
	152	/* Sparc specific messages. */
	153	#define MSG_CROSS_CALL 0x0005 /* run func on cpus */
	154
	155	/* Empirical PROM processor mailbox constants. If the per-cpu mailbox
	156	* contains something other than one of these then the ipi is from
	157	* Linux's active_kernel_processor. This facility exists so that
	158	* the boot monitor can capture all the other cpus when one catches
	159	* a watchdog reset or the user enters the monitor using L1-A keys.
	160	*/
	161	#define MBOX_STOPCPU 0xFB
	162	#define MBOX_IDLECPU 0xFC
	163	#define MBOX_IDLECPU2 0xFD
	164	#define MBOX_STOPCPU2 0xFE
	165
7202fb49 BB	166	#else /* SMP */
	167
	168	#define smp_setup_cpu_possible_map() do { } while (0)
	169
	170	#endif /* !(SMP) */
1da177e4 LT	171
	172	#define NO_PROC_ID 0xFF
	173
	174	#endif /* !(_SPARC_SMP_H) */