[deliverable/linux.git] / include / asm-x86 / smp.h

#ifndef _ASM_X86_SMP_H_
#define _ASM_X86_SMP_H_
#ifndef __ASSEMBLY__
#include <linux/cpumask.h>
#include <linux/init.h>
#include <asm/percpu.h>

/*
 * We need the APIC definitions automatically as part of 'smp.h'
 */
#ifdef CONFIG_X86_LOCAL_APIC
# include <asm/mpspec.h>
# include <asm/apic.h>
# ifdef CONFIG_X86_IO_APIC
#  include <asm/io_apic.h>
# endif
#endif
#include <asm/pda.h>
#include <asm/thread_info.h>

extern cpumask_t cpu_callout_map;
extern cpumask_t cpu_initialized;
extern cpumask_t cpu_callin_map;

extern void (*mtrr_hook)(void);
extern void zap_low_mappings(void);

extern int smp_num_siblings;
extern unsigned int num_processors;
extern cpumask_t cpu_initialized;

extern u16 x86_cpu_to_apicid_init[];
extern u16 x86_bios_cpu_apicid_init[];
extern void *x86_cpu_to_apicid_early_ptr;
extern void *x86_bios_cpu_apicid_early_ptr;

DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
DECLARE_PER_CPU(cpumask_t, cpu_core_map);
DECLARE_PER_CPU(u16, cpu_llc_id);
DECLARE_PER_CPU(u16, x86_cpu_to_apicid);
DECLARE_PER_CPU(u16, x86_bios_cpu_apicid);

/*
 * Trampoline 80x86 program as an array.
 */
extern const unsigned char trampoline_data [];
extern const unsigned char trampoline_end  [];
extern unsigned char *trampoline_base;

/* Static state in head.S used to set up a CPU */
extern struct {
	void *sp;
	unsigned short ss;
} stack_start;

extern unsigned long init_rsp;
extern unsigned long initial_code;

struct smp_ops {
	void (*smp_prepare_boot_cpu)(void);
	void (*smp_prepare_cpus)(unsigned max_cpus);
	int (*cpu_up)(unsigned cpu);
	void (*smp_cpus_done)(unsigned max_cpus);

	void (*smp_send_stop)(void);
	void (*smp_send_reschedule)(int cpu);
	int (*smp_call_function_mask)(cpumask_t mask,
				      void (*func)(void *info), void *info,
				      int wait);
};

/* Globals due to paravirt */
extern void set_cpu_sibling_map(int cpu);

#ifdef CONFIG_SMP
#ifndef CONFIG_PARAVIRT
#define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0)
#endif
extern struct smp_ops smp_ops;

static inline void smp_send_stop(void)
{
	smp_ops.smp_send_stop();
}

static inline void smp_prepare_boot_cpu(void)
{
	smp_ops.smp_prepare_boot_cpu();
}

static inline void smp_prepare_cpus(unsigned int max_cpus)
{
	smp_ops.smp_prepare_cpus(max_cpus);
}

static inline void smp_cpus_done(unsigned int max_cpus)
{
	smp_ops.smp_cpus_done(max_cpus);
}

static inline int __cpu_up(unsigned int cpu)
{
	return smp_ops.cpu_up(cpu);
}

static inline void smp_send_reschedule(int cpu)
{
	smp_ops.smp_send_reschedule(cpu);
}

static inline int smp_call_function_mask(cpumask_t mask,
					 void (*func) (void *info), void *info,
					 int wait)
{
	return smp_ops.smp_call_function_mask(mask, func, info, wait);
}

void native_smp_prepare_boot_cpu(void);
void native_smp_prepare_cpus(unsigned int max_cpus);
void native_smp_cpus_done(unsigned int max_cpus);
int native_cpu_up(unsigned int cpunum);

extern int __cpu_disable(void);
extern void __cpu_die(unsigned int cpu);

extern unsigned disabled_cpus;
extern void prefill_possible_map(void);

#define SMP_TRAMPOLINE_BASE 0x6000
extern unsigned long setup_trampoline(void);

void smp_store_cpu_info(int id);
#define cpu_physical_id(cpu)	per_cpu(x86_cpu_to_apicid, cpu)

/* We don't mark CPUs online until __cpu_up(), so we need another measure */
static inline int num_booting_cpus(void)
{
	return cpus_weight(cpu_callout_map);
}
#endif /* CONFIG_SMP */

#ifdef CONFIG_X86_32_SMP
/*
 * This function is needed by all SMP systems. It must _always_ be valid
 * from the initial startup. We map APIC_BASE very early in page_setup(),
 * so this is correct in the x86 case.
 */
DECLARE_PER_CPU(int, cpu_number);
#define raw_smp_processor_id() (x86_read_percpu(cpu_number))
extern int safe_smp_processor_id(void);

#elif defined(CONFIG_X86_64_SMP)
#define raw_smp_processor_id()	read_pda(cpunumber)

#define stack_smp_processor_id()					\
({								\
	struct thread_info *ti;						\
	__asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK));	\
	ti->cpu;							\
})
#define safe_smp_processor_id()		smp_processor_id()

#else /* !CONFIG_X86_32_SMP && !CONFIG_X86_64_SMP */
#define cpu_physical_id(cpu)		boot_cpu_physical_apicid
#define safe_smp_processor_id()		0
#define stack_smp_processor_id() 	0
#endif

#ifdef CONFIG_X86_LOCAL_APIC

static inline int logical_smp_processor_id(void)
{
	/* we don't want to mark this access volatile - bad code generation */
	return GET_APIC_LOGICAL_ID(*(u32 *)(APIC_BASE + APIC_LDR));
}

static inline unsigned int read_apic_id(void)
{
	return *(u32 *)(APIC_BASE + APIC_ID);
}

# ifdef APIC_DEFINITION
extern int hard_smp_processor_id(void);
# else
#  include <mach_apicdef.h>
static inline int hard_smp_processor_id(void)
{
	/* we don't want to mark this access volatile - bad code generation */
	return GET_APIC_ID(read_apic_id());
}
# endif /* APIC_DEFINITION */

#else /* CONFIG_X86_LOCAL_APIC */

# ifndef CONFIG_SMP
#  define hard_smp_processor_id()	0
# endif

#endif /* CONFIG_X86_LOCAL_APIC */

#ifdef CONFIG_HOTPLUG_CPU
extern void cpu_exit_clear(void);
extern void cpu_uninit(void);
extern void remove_siblinginfo(int cpu);
#endif

extern void smp_alloc_memory(void);
extern void lock_ipi_call_lock(void);
extern void unlock_ipi_call_lock(void);
#endif /* __ASSEMBLY__ */
#endif
Commit	Line	Data
c27cfeff GC	1	#ifndef _ASM_X86_SMP_H_
	2	#define _ASM_X86_SMP_H_
	3	#ifndef __ASSEMBLY__
53ebef49	4	#include <linux/cpumask.h>
93b016f8	5	#include <linux/init.h>
7e1efc0c	6	#include <asm/percpu.h>
53ebef49	7
b23dab08 GC	8	/*
	9	* We need the APIC definitions automatically as part of 'smp.h'
	10	*/
	11	#ifdef CONFIG_X86_LOCAL_APIC
	12	# include <asm/mpspec.h>
	13	# include <asm/apic.h>
	14	# ifdef CONFIG_X86_IO_APIC
	15	# include <asm/io_apic.h>
	16	# endif
	17	#endif
	18	#include <asm/pda.h>
	19	#include <asm/thread_info.h>
	20
53ebef49	21	extern cpumask_t cpu_callout_map;
8be9ac85 GC	22	extern cpumask_t cpu_initialized;
	23	extern cpumask_t cpu_callin_map;
	24
	25	extern void (*mtrr_hook)(void);
	26	extern void zap_low_mappings(void);
53ebef49 GC	27
	28	extern int smp_num_siblings;
	29	extern unsigned int num_processors;
cb3c8b90	30	extern cpumask_t cpu_initialized;
c27cfeff	31
7e1efc0c GOC	32	extern u16 x86_cpu_to_apicid_init[];
	33	extern u16 x86_bios_cpu_apicid_init[];
	34	extern void *x86_cpu_to_apicid_early_ptr;
	35	extern void *x86_bios_cpu_apicid_early_ptr;
	36
	37	DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
	38	DECLARE_PER_CPU(cpumask_t, cpu_core_map);
	39	DECLARE_PER_CPU(u16, cpu_llc_id);
	40	DECLARE_PER_CPU(u16, x86_cpu_to_apicid);
	41	DECLARE_PER_CPU(u16, x86_bios_cpu_apicid);
	42
42068829 GC	43	/*
	44	* Trampoline 80x86 program as an array.
	45	*/
	46	extern const unsigned char trampoline_data [];
	47	extern const unsigned char trampoline_end [];
91718e8d	48	extern unsigned char *trampoline_base;
42068829	49
9d97d0da GOC	50	/* Static state in head.S used to set up a CPU */
	51	extern struct {
	52	void *sp;
	53	unsigned short ss;
	54	} stack_start;
	55
cb3c8b90 GOC	56	extern unsigned long init_rsp;
cb3c8b90 GOC	57	extern unsigned long initial_code;
9d97d0da	58
16694024 GC	59	struct smp_ops {
	60	void (*smp_prepare_boot_cpu)(void);
	61	void (*smp_prepare_cpus)(unsigned max_cpus);
	62	int (*cpu_up)(unsigned cpu);
	63	void (*smp_cpus_done)(unsigned max_cpus);
	64
	65	void (*smp_send_stop)(void);
	66	void (*smp_send_reschedule)(int cpu);
	67	int (*smp_call_function_mask)(cpumask_t mask,
	68	void (func)(void info), void *info,
	69	int wait);
	70	};
	71
14522076 GC	72	/* Globals due to paravirt */
	73	extern void set_cpu_sibling_map(int cpu);
	74
c76cb368	75	#ifdef CONFIG_SMP
d0173aea GOC	76	#ifndef CONFIG_PARAVIRT
	77	#define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0)
	78	#endif
c76cb368	79	extern struct smp_ops smp_ops;
8678969e	80
377d6984 GC	81	static inline void smp_send_stop(void)
	82	{
	83	smp_ops.smp_send_stop();
	84	}
	85
1e3fac83 GC	86	static inline void smp_prepare_boot_cpu(void)
	87	{
	88	smp_ops.smp_prepare_boot_cpu();
	89	}
	90
7557da67 GC	91	static inline void smp_prepare_cpus(unsigned int max_cpus)
	92	{
	93	smp_ops.smp_prepare_cpus(max_cpus);
	94	}
	95
c5597649 GC	96	static inline void smp_cpus_done(unsigned int max_cpus)
	97	{
	98	smp_ops.smp_cpus_done(max_cpus);
	99	}
	100
71d19549 GC	101	static inline int __cpu_up(unsigned int cpu)
	102	{
	103	return smp_ops.cpu_up(cpu);
	104	}
	105
8678969e GC	106	static inline void smp_send_reschedule(int cpu)
	107	{
	108	smp_ops.smp_send_reschedule(cpu);
	109	}
64b1a21e GC	110
	111	static inline int smp_call_function_mask(cpumask_t mask,
	112	void (func) (void info), void *info,
	113	int wait)
	114	{
	115	return smp_ops.smp_call_function_mask(mask, func, info, wait);
	116	}
71d19549	117
1e3fac83	118	void native_smp_prepare_boot_cpu(void);
7557da67	119	void native_smp_prepare_cpus(unsigned int max_cpus);
c5597649	120	void native_smp_cpus_done(unsigned int max_cpus);
71d19549	121	int native_cpu_up(unsigned int cpunum);
93b016f8	122
69c18c15 GC	123	extern int __cpu_disable(void);
	124	extern void __cpu_die(unsigned int cpu);
	125
93b016f8	126	extern unsigned disabled_cpus;
68a1c3f8	127	extern void prefill_possible_map(void);
91718e8d GC	128
	129	#define SMP_TRAMPOLINE_BASE 0x6000
	130	extern unsigned long setup_trampoline(void);
1d89a7f0 GOC	131
1d89a7f0 GOC	132	void smp_store_cpu_info(int id);
c70dcb74	133	#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
a9c057c1 GC	134
	135	/* We don't mark CPUs online until __cpu_up(), so we need another measure */
	136	static inline int num_booting_cpus(void)
	137	{
	138	return cpus_weight(cpu_callout_map);
	139	}
	140	#endif /* CONFIG_SMP */
	141
	142	#ifdef CONFIG_X86_32_SMP
	143	/*
	144	* This function is needed by all SMP systems. It must _always_ be valid
	145	* from the initial startup. We map APIC_BASE very early in page_setup(),
	146	* so this is correct in the x86 case.
	147	*/
	148	DECLARE_PER_CPU(int, cpu_number);
	149	#define raw_smp_processor_id() (x86_read_percpu(cpu_number))
	150	extern int safe_smp_processor_id(void);
	151
	152	#elif defined(CONFIG_X86_64_SMP)
	153	#define raw_smp_processor_id() read_pda(cpunumber)
	154
	155	#define stack_smp_processor_id() \
	156	({ \
	157	struct thread_info *ti; \
	158	__asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
	159	ti->cpu; \
	160	})
	161	#define safe_smp_processor_id() smp_processor_id()
	162
	163	#else /* !CONFIG_X86_32_SMP && !CONFIG_X86_64_SMP */
c70dcb74	164	#define cpu_physical_id(cpu) boot_cpu_physical_apicid
a9c057c1 GC	165	#define safe_smp_processor_id() 0
a9c057c1 GC	166	#define stack_smp_processor_id() 0
c76cb368	167	#endif
16694024	168
1b000843 GC	169	#ifdef CONFIG_X86_LOCAL_APIC
	170
	171	static inline int logical_smp_processor_id(void)
	172	{
	173	/* we don't want to mark this access volatile - bad code generation */
	174	return GET_APIC_LOGICAL_ID((u32 )(APIC_BASE + APIC_LDR));
	175	}
	176
05f2d12c JS	177	static inline unsigned int read_apic_id(void)
	178	{
	179	return (u32 )(APIC_BASE + APIC_ID);
	180	}
	181
1b000843 GC	182	# ifdef APIC_DEFINITION
	183	extern int hard_smp_processor_id(void);
	184	# else
	185	# include <mach_apicdef.h>
	186	static inline int hard_smp_processor_id(void)
	187	{
	188	/* we don't want to mark this access volatile - bad code generation */
05f2d12c	189	return GET_APIC_ID(read_apic_id());
1b000843 GC	190	}
	191	# endif /* APIC_DEFINITION */
	192
	193	#else /* CONFIG_X86_LOCAL_APIC */
	194
	195	# ifndef CONFIG_SMP
	196	# define hard_smp_processor_id() 0
	197	# endif
	198
	199	#endif /* CONFIG_X86_LOCAL_APIC */
	200
1dbb4726 GC	201	#ifdef CONFIG_HOTPLUG_CPU
	202	extern void cpu_exit_clear(void);
	203	extern void cpu_uninit(void);
	204	extern void remove_siblinginfo(int cpu);
	205	#endif
	206
639acb16 GC	207	extern void smp_alloc_memory(void);
	208	extern void lock_ipi_call_lock(void);
	209	extern void unlock_ipi_call_lock(void);
c27cfeff GC	210	#endif /* __ASSEMBLY__ */
c27cfeff GC	211	#endif