[net-next-2.6.git] / include / asm-i386 / apic.h

#ifndef __ASM_APIC_H
#define __ASM_APIC_H

#include <linux/pm.h>
#include <asm/fixmap.h>
#include <asm/apicdef.h>
#include <asm/processor.h>
#include <asm/system.h>

#define Dprintk(x...)

/*
 * Debugging macros
 */
#define APIC_QUIET   0
#define APIC_VERBOSE 1
#define APIC_DEBUG   2

extern int apic_verbosity;

/*
 * Define the default level of output to be very little
 * This can be turned up by using apic=verbose for more
 * information and apic=debug for _lots_ of information.
 * apic_verbosity is defined in apic.c
 */
#define apic_printk(v, s, a...) do {       \
		if ((v) <= apic_verbosity) \
			printk(s, ##a);    \
	} while (0)


extern void generic_apic_probe(void);

#ifdef CONFIG_X86_LOCAL_APIC

/*
 * Basic functions accessing APICs.
 */

static __inline void apic_write(unsigned long reg, unsigned long v)
{
	*((volatile unsigned long *)(APIC_BASE+reg)) = v;
}

static __inline void apic_write_atomic(unsigned long reg, unsigned long v)
{
	xchg((volatile unsigned long *)(APIC_BASE+reg), v);
}

static __inline unsigned long apic_read(unsigned long reg)
{
	return *((volatile unsigned long *)(APIC_BASE+reg));
}

static __inline__ void apic_wait_icr_idle(void)
{
	while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY )
		cpu_relax();
}

int get_physical_broadcast(void);

#ifdef CONFIG_X86_GOOD_APIC
# define FORCE_READ_AROUND_WRITE 0
# define apic_read_around(x)
# define apic_write_around(x,y) apic_write((x),(y))
#else
# define FORCE_READ_AROUND_WRITE 1
# define apic_read_around(x) apic_read(x)
# define apic_write_around(x,y) apic_write_atomic((x),(y))
#endif

static inline void ack_APIC_irq(void)
{
	/*
	 * ack_APIC_irq() actually gets compiled as a single instruction:
	 * - a single rmw on Pentium/82489DX
	 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
	 * ... yummie.
	 */

	/* Docs say use 0 for future compatibility */
	apic_write_around(APIC_EOI, 0);
}

extern void (*wait_timer_tick)(void);

extern int get_maxlvt(void);
extern void clear_local_APIC(void);
extern void connect_bsp_APIC (void);
extern void disconnect_bsp_APIC (int virt_wire_setup);
extern void disable_local_APIC (void);
extern void lapic_shutdown (void);
extern int verify_local_APIC (void);
extern void cache_APIC_registers (void);
extern void sync_Arb_IDs (void);
extern void init_bsp_APIC (void);
extern void setup_local_APIC (void);
extern void init_apic_mappings (void);
extern void smp_local_timer_interrupt (void);
extern void setup_boot_APIC_clock (void);
extern void setup_secondary_APIC_clock (void);
extern int APIC_init_uniprocessor (void);
extern void disable_APIC_timer(void);
extern void enable_APIC_timer(void);

extern void enable_NMI_through_LVT0 (void * dummy);

void smp_send_timer_broadcast_ipi(void);
void switch_APIC_timer_to_ipi(void *cpumask);
void switch_ipi_to_APIC_timer(void *cpumask);
#define ARCH_APICTIMER_STOPS_ON_C3	1

extern int timer_over_8254;

#else /* !CONFIG_X86_LOCAL_APIC */
static inline void lapic_shutdown(void) { }

#endif /* !CONFIG_X86_LOCAL_APIC */

#endif /* __ASM_APIC_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __ASM_APIC_H
	2	#define __ASM_APIC_H
	3
1da177e4 LT	4	#include <linux/pm.h>
	5	#include <asm/fixmap.h>
	6	#include <asm/apicdef.h>
9635b47d	7	#include <asm/processor.h>
1da177e4 LT	8	#include <asm/system.h>
	9
	10	#define Dprintk(x...)
	11
	12	/*
	13	* Debugging macros
	14	*/
	15	#define APIC_QUIET 0
	16	#define APIC_VERBOSE 1
	17	#define APIC_DEBUG 2
	18
	19	extern int apic_verbosity;
	20
	21	/*
	22	* Define the default level of output to be very little
	23	* This can be turned up by using apic=verbose for more
	24	* information and apic=debug for _lots_ of information.
	25	* apic_verbosity is defined in apic.c
	26	*/
	27	#define apic_printk(v, s, a...) do { \
	28	if ((v) <= apic_verbosity) \
	29	printk(s, ##a); \
	30	} while (0)
	31
	32
1a3f239d RR	33	extern void generic_apic_probe(void);
1a3f239d RR	34
1da177e4 LT	35	#ifdef CONFIG_X86_LOCAL_APIC
	36
	37	/*
	38	* Basic functions accessing APICs.
	39	*/
	40
	41	static __inline void apic_write(unsigned long reg, unsigned long v)
	42	{
	43	((volatile unsigned long )(APIC_BASE+reg)) = v;
	44	}
	45
	46	static __inline void apic_write_atomic(unsigned long reg, unsigned long v)
	47	{
	48	xchg((volatile unsigned long *)(APIC_BASE+reg), v);
	49	}
	50
	51	static __inline unsigned long apic_read(unsigned long reg)
	52	{
	53	return ((volatile unsigned long )(APIC_BASE+reg));
	54	}
	55
	56	static __inline__ void apic_wait_icr_idle(void)
	57	{
	58	while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY )
	59	cpu_relax();
	60	}
	61
	62	int get_physical_broadcast(void);
	63
	64	#ifdef CONFIG_X86_GOOD_APIC
	65	# define FORCE_READ_AROUND_WRITE 0
	66	# define apic_read_around(x)
	67	# define apic_write_around(x,y) apic_write((x),(y))
	68	#else
	69	# define FORCE_READ_AROUND_WRITE 1
	70	# define apic_read_around(x) apic_read(x)
	71	# define apic_write_around(x,y) apic_write_atomic((x),(y))
	72	#endif
	73
	74	static inline void ack_APIC_irq(void)
	75	{
	76	/*
	77	* ack_APIC_irq() actually gets compiled as a single instruction:
	78	* - a single rmw on Pentium/82489DX
	79	* - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
	80	* ... yummie.
	81	*/
	82
	83	/* Docs say use 0 for future compatibility */
	84	apic_write_around(APIC_EOI, 0);
	85	}
	86
	87	extern void (*wait_timer_tick)(void);
	88
	89	extern int get_maxlvt(void);
	90	extern void clear_local_APIC(void);
	91	extern void connect_bsp_APIC (void);
650927ef	92	extern void disconnect_bsp_APIC (int virt_wire_setup);
1da177e4 LT	93	extern void disable_local_APIC (void);
	94	extern void lapic_shutdown (void);
	95	extern int verify_local_APIC (void);
	96	extern void cache_APIC_registers (void);
	97	extern void sync_Arb_IDs (void);
	98	extern void init_bsp_APIC (void);
	99	extern void setup_local_APIC (void);
	100	extern void init_apic_mappings (void);
7d12e780	101	extern void smp_local_timer_interrupt (void);
1da177e4 LT	102	extern void setup_boot_APIC_clock (void);
1da177e4 LT	103	extern void setup_secondary_APIC_clock (void);
1da177e4 LT	104	extern int APIC_init_uniprocessor (void);
	105	extern void disable_APIC_timer(void);
	106	extern void enable_APIC_timer(void);
	107
1da177e4 LT	108	extern void enable_NMI_through_LVT0 (void * dummy);
1da177e4 LT	109
7d12e780	110	void smp_send_timer_broadcast_ipi(void);
6eb0a0fd VP	111	void switch_APIC_timer_to_ipi(void *cpumask);
	112	void switch_ipi_to_APIC_timer(void *cpumask);
	113	#define ARCH_APICTIMER_STOPS_ON_C3 1
	114
f9262c12 AK	115	extern int timer_over_8254;
f9262c12 AK	116
1da177e4 LT	117	#else /* !CONFIG_X86_LOCAL_APIC */
	118	static inline void lapic_shutdown(void) { }
	119
	120	#endif /* !CONFIG_X86_LOCAL_APIC */
	121
	122	#endif /* __ASM_APIC_H */