[linux-2.6-block.git] / include / asm-x86 / io_apic.h

#ifndef __ASM_IO_APIC_H
#define __ASM_IO_APIC_H

#include <linux/types.h>
#include <asm/mpspec.h>
#include <asm/apicdef.h>

/*
 * Intel IO-APIC support for SMP and UP systems.
 *
 * Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
 */

/* I/O Unit Redirection Table */
#define IO_APIC_REDIR_VECTOR_MASK	0x000FF
#define IO_APIC_REDIR_DEST_LOGICAL	0x00800
#define IO_APIC_REDIR_DEST_PHYSICAL	0x00000
#define IO_APIC_REDIR_SEND_PENDING	(1 << 12)
#define IO_APIC_REDIR_REMOTE_IRR	(1 << 14)
#define IO_APIC_REDIR_LEVEL_TRIGGER	(1 << 15)
#define IO_APIC_REDIR_MASKED		(1 << 16)

/*
 * The structure of the IO-APIC:
 */
union IO_APIC_reg_00 {
	u32	raw;
	struct {
		u32	__reserved_2	: 14,
			LTS		:  1,
			delivery_type	:  1,
			__reserved_1	:  8,
			ID		:  8;
	} __attribute__ ((packed)) bits;
};

union IO_APIC_reg_01 {
	u32	raw;
	struct {
		u32	version		:  8,
			__reserved_2	:  7,
			PRQ		:  1,
			entries		:  8,
			__reserved_1	:  8;
	} __attribute__ ((packed)) bits;
};

union IO_APIC_reg_02 {
	u32	raw;
	struct {
		u32	__reserved_2	: 24,
			arbitration	:  4,
			__reserved_1	:  4;
	} __attribute__ ((packed)) bits;
};

union IO_APIC_reg_03 {
	u32	raw;
	struct {
		u32	boot_DT		:  1,
			__reserved_1	: 31;
	} __attribute__ ((packed)) bits;
};

enum ioapic_irq_destination_types {
	dest_Fixed = 0,
	dest_LowestPrio = 1,
	dest_SMI = 2,
	dest__reserved_1 = 3,
	dest_NMI = 4,
	dest_INIT = 5,
	dest__reserved_2 = 6,
	dest_ExtINT = 7
};

struct IO_APIC_route_entry {
	__u32	vector		:  8,
		delivery_mode	:  3,	/* 000: FIXED
					 * 001: lowest prio
					 * 111: ExtINT
					 */
		dest_mode	:  1,	/* 0: physical, 1: logical */
		delivery_status	:  1,
		polarity	:  1,
		irr		:  1,
		trigger		:  1,	/* 0: edge, 1: level */
		mask		:  1,	/* 0: enabled, 1: disabled */
		__reserved_2	: 15;

#ifdef CONFIG_X86_32
	union {
		struct {
			__u32	__reserved_1	: 24,
				physical_dest	:  4,
				__reserved_2	:  4;
		} physical;

		struct {
			__u32	__reserved_1	: 24,
				logical_dest	:  8;
		} logical;
	} dest;
#else
	__u32	__reserved_3	: 24,
		dest		:  8;
#endif

} __attribute__ ((packed));

#ifdef CONFIG_X86_IO_APIC

/*
 * # of IO-APICs and # of IRQ routing registers
 */
extern int nr_ioapics;
extern int nr_ioapic_registers[MAX_IO_APICS];

/*
 * MP-BIOS irq configuration table structures:
 */

#define MP_MAX_IOAPIC_PIN 127

struct mp_ioapic_routing {
	int apic_id;
	int gsi_base;
	int gsi_end;
	DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1);
};

/* I/O APIC entries */
extern struct mpc_config_ioapic mp_ioapics[MAX_IO_APICS];

/* # of MP IRQ source entries */
extern int mp_irq_entries;

/* MP IRQ source entries */
extern struct mpc_config_intsrc mp_irqs[MAX_IRQ_SOURCES];

/* non-0 if default (table-less) MP configuration */
extern int mpc_default_type;

/* Older SiS APIC requires we rewrite the index register */
extern int sis_apic_bug;

/* 1 if "noapic" boot option passed */
extern int skip_ioapic_setup;

/* 1 if the timer IRQ uses the '8259A Virtual Wire' mode */
extern int timer_through_8259;

static inline void disable_ioapic_setup(void)
{
	skip_ioapic_setup = 1;
}

/*
 * If we use the IO-APIC for IRQ routing, disable automatic
 * assignment of PCI IRQ's.
 */
#define io_apic_assign_pci_irqs \
	(mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)

#ifdef CONFIG_ACPI
extern int io_apic_get_unique_id(int ioapic, int apic_id);
extern int io_apic_get_version(int ioapic);
extern int io_apic_get_redir_entries(int ioapic);
extern int io_apic_set_pci_routing(int ioapic, int pin, int irq,
				   int edge_level, int active_high_low);
#endif /* CONFIG_ACPI */

extern int (*ioapic_renumber_irq)(int ioapic, int irq);
extern void ioapic_init_mappings(void);

#else  /* !CONFIG_X86_IO_APIC */
#define io_apic_assign_pci_irqs 0
static const int timer_through_8259 = 0;
#endif

#endif
Commit	Line	Data
e1d91978 TG	1	#ifndef __ASM_IO_APIC_H
	2	#define __ASM_IO_APIC_H
	3
a1a33fa3	4	#include <linux/types.h>
e1d91978 TG	5	#include <asm/mpspec.h>
	6	#include <asm/apicdef.h>
	7
	8	/*
	9	* Intel IO-APIC support for SMP and UP systems.
	10	*
	11	* Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
	12	*/
	13
d3f020d2 CG	14	/* I/O Unit Redirection Table */
	15	#define IO_APIC_REDIR_VECTOR_MASK 0x000FF
	16	#define IO_APIC_REDIR_DEST_LOGICAL 0x00800
	17	#define IO_APIC_REDIR_DEST_PHYSICAL 0x00000
	18	#define IO_APIC_REDIR_SEND_PENDING (1 << 12)
	19	#define IO_APIC_REDIR_REMOTE_IRR (1 << 14)
	20	#define IO_APIC_REDIR_LEVEL_TRIGGER (1 << 15)
	21	#define IO_APIC_REDIR_MASKED (1 << 16)
	22
e1d91978 TG	23	/*
	24	* The structure of the IO-APIC:
	25	*/
	26	union IO_APIC_reg_00 {
	27	u32 raw;
	28	struct {
	29	u32 __reserved_2 : 14,
	30	LTS : 1,
	31	delivery_type : 1,
	32	__reserved_1 : 8,
	33	ID : 8;
	34	} __attribute__ ((packed)) bits;
	35	};
	36
	37	union IO_APIC_reg_01 {
	38	u32 raw;
	39	struct {
	40	u32 version : 8,
	41	__reserved_2 : 7,
	42	PRQ : 1,
	43	entries : 8,
	44	__reserved_1 : 8;
	45	} __attribute__ ((packed)) bits;
	46	};
	47
	48	union IO_APIC_reg_02 {
	49	u32 raw;
	50	struct {
	51	u32 __reserved_2 : 24,
	52	arbitration : 4,
	53	__reserved_1 : 4;
	54	} __attribute__ ((packed)) bits;
	55	};
	56
	57	union IO_APIC_reg_03 {
	58	u32 raw;
	59	struct {
	60	u32 boot_DT : 1,
	61	__reserved_1 : 31;
	62	} __attribute__ ((packed)) bits;
	63	};
	64
	65	enum ioapic_irq_destination_types {
	66	dest_Fixed = 0,
	67	dest_LowestPrio = 1,
	68	dest_SMI = 2,
	69	dest__reserved_1 = 3,
	70	dest_NMI = 4,
	71	dest_INIT = 5,
	72	dest__reserved_2 = 6,
	73	dest_ExtINT = 7
	74	};
	75
	76	struct IO_APIC_route_entry {
	77	__u32 vector : 8,
	78	delivery_mode : 3, /* 000: FIXED
	79	* 001: lowest prio
	80	* 111: ExtINT
	81	*/
	82	dest_mode : 1, /* 0: physical, 1: logical */
	83	delivery_status : 1,
	84	polarity : 1,
	85	irr : 1,
	86	trigger : 1, /* 0: edge, 1: level */
87	mask : 1, /* 0: enabled, 1: disabled */
88	__reserved_2 : 15;
89
96a388de	90	#ifdef CONFIG_X86_32
e1d91978 TG	91	union {
	92	struct {
	93	__u32 __reserved_1 : 24,
	94	physical_dest : 4,
	95	__reserved_2 : 4;
	96	} physical;
	97
	98	struct {
	99	__u32 __reserved_1 : 24,
	100	logical_dest : 8;
	101	} logical;
	102	} dest;
96a388de	103	#else
e1d91978 TG	104	__u32 __reserved_3 : 24,
	105	dest : 8;
	106	#endif
	107
	108	} __attribute__ ((packed));
	109
	110	#ifdef CONFIG_X86_IO_APIC
	111
	112	/*
	113	* # of IO-APICs and # of IRQ routing registers
	114	*/
	115	extern int nr_ioapics;
	116	extern int nr_ioapic_registers[MAX_IO_APICS];
	117
	118	/*
	119	* MP-BIOS irq configuration table structures:
	120	*/
	121
a1a33fa3 AM	122	#define MP_MAX_IOAPIC_PIN 127
a1a33fa3 AM	123
9e5c5f1d AS	124	struct mp_ioapic_routing {
	125	int apic_id;
	126	int gsi_base;
	127	int gsi_end;
a1a33fa3	128	DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1);
9e5c5f1d AS	129	};
9e5c5f1d AS	130
e1d91978 TG	131	/* I/O APIC entries */
	132	extern struct mpc_config_ioapic mp_ioapics[MAX_IO_APICS];
	133
	134	/* # of MP IRQ source entries */
	135	extern int mp_irq_entries;
	136
	137	/* MP IRQ source entries */
	138	extern struct mpc_config_intsrc mp_irqs[MAX_IRQ_SOURCES];
	139
	140	/* non-0 if default (table-less) MP configuration */
	141	extern int mpc_default_type;
	142
	143	/* Older SiS APIC requires we rewrite the index register */
	144	extern int sis_apic_bug;
	145
	146	/* 1 if "noapic" boot option passed */
	147	extern int skip_ioapic_setup;
	148
35542c5e MR	149	/* 1 if the timer IRQ uses the '8259A Virtual Wire' mode */
	150	extern int timer_through_8259;
	151
e1d91978 TG	152	static inline void disable_ioapic_setup(void)
	153	{
	154	skip_ioapic_setup = 1;
	155	}
	156
	157	/*
	158	* If we use the IO-APIC for IRQ routing, disable automatic
	159	* assignment of PCI IRQ's.
	160	*/
	161	#define io_apic_assign_pci_irqs \
	162	(mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)
	163
	164	#ifdef CONFIG_ACPI
	165	extern int io_apic_get_unique_id(int ioapic, int apic_id);
	166	extern int io_apic_get_version(int ioapic);
	167	extern int io_apic_get_redir_entries(int ioapic);
	168	extern int io_apic_set_pci_routing(int ioapic, int pin, int irq,
	169	int edge_level, int active_high_low);
e1d91978 TG	170	#endif /* CONFIG_ACPI */
	171
	172	extern int (*ioapic_renumber_irq)(int ioapic, int irq);
	173	extern void ioapic_init_mappings(void);
	174
	175	#else /* !CONFIG_X86_IO_APIC */
	176	#define io_apic_assign_pci_irqs 0
35542c5e	177	static const int timer_through_8259 = 0;
e1d91978 TG	178	#endif
e1d91978 TG	179
96a388de	180	#endif