[deliverable/linux.git] / arch / x86 / include / asm / io_apic.h

#ifndef _ASM_X86_IO_APIC_H
#define _ASM_X86_IO_APIC_H

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

	__u32	__reserved_3	: 24,
		dest		:  8;
} __attribute__ ((packed));

struct IR_IO_APIC_route_entry {
	__u64	vector		: 8,
		zero		: 3,
		index2		: 1,
		delivery_status : 1,
		polarity	: 1,
		irr		: 1,
		trigger		: 1,
		mask		: 1,
		reserved	: 31,
		format		: 1,
		index		: 15;
} __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_config_ioapic {
	unsigned long mp_apicaddr;
	unsigned int mp_apicid;
	unsigned char mp_type;
	unsigned char mp_apicver;
	unsigned char mp_flags;
};

struct mp_config_intsrc {
	unsigned int mp_dstapic;
	unsigned char mp_type;
	unsigned char mp_irqtype;
	unsigned short mp_irqflag;
	unsigned char mp_srcbus;
	unsigned char mp_srcbusirq;
	unsigned char mp_dstirq;
};

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

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

/* MP IRQ source entries */
extern struct mp_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 "noapic" boot option passed */
extern int noioapicquirk;

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

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

static inline void disable_ioapic_setup(void)
{
#ifdef CONFIG_PCI
	noioapicquirk = 1;
	noioapicreroute = -1;
#endif
	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);

#ifdef CONFIG_X86_64
extern int save_mask_IO_APIC_setup(void);
extern void restore_IO_APIC_setup(void);
extern void reinit_intr_remapped_IO_APIC(int);
#endif

extern void probe_nr_irqs_gsi(void);

#else  /* !CONFIG_X86_IO_APIC */
#define io_apic_assign_pci_irqs 0
static const int timer_through_8259 = 0;
static inline void ioapic_init_mappings(void)	{ }

static inline void probe_nr_irqs_gsi(void)	{ }
#endif

#endif /* _ASM_X86_IO_APIC_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_IO_APIC_H
1965aae3 PA	2	#define _ASM_X86_IO_APIC_H
e1d91978	3
a1a33fa3	4	#include <linux/types.h>
e1d91978 TG	5	#include <asm/mpspec.h>
e1d91978 TG	6	#include <asm/apicdef.h>
9d6a4d08	7	#include <asm/irq_vectors.h>
e1d91978 TG	8
	9	/*
	10	* Intel IO-APIC support for SMP and UP systems.
	11	*
	12	* Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
	13	*/
	14
d3f020d2 CG	15	/* I/O Unit Redirection Table */
	16	#define IO_APIC_REDIR_VECTOR_MASK 0x000FF
	17	#define IO_APIC_REDIR_DEST_LOGICAL 0x00800
	18	#define IO_APIC_REDIR_DEST_PHYSICAL 0x00000
	19	#define IO_APIC_REDIR_SEND_PENDING (1 << 12)
	20	#define IO_APIC_REDIR_REMOTE_IRR (1 << 14)
	21	#define IO_APIC_REDIR_LEVEL_TRIGGER (1 << 15)
	22	#define IO_APIC_REDIR_MASKED (1 << 16)
	23
e1d91978 TG	24	/*
	25	* The structure of the IO-APIC:
	26	*/
	27	union IO_APIC_reg_00 {
	28	u32 raw;
	29	struct {
	30	u32 __reserved_2 : 14,
	31	LTS : 1,
	32	delivery_type : 1,
	33	__reserved_1 : 8,
	34	ID : 8;
	35	} __attribute__ ((packed)) bits;
	36	};
	37
	38	union IO_APIC_reg_01 {
	39	u32 raw;
	40	struct {
	41	u32 version : 8,
	42	__reserved_2 : 7,
	43	PRQ : 1,
	44	entries : 8,
	45	__reserved_1 : 8;
	46	} __attribute__ ((packed)) bits;
	47	};
	48
	49	union IO_APIC_reg_02 {
	50	u32 raw;
	51	struct {
	52	u32 __reserved_2 : 24,
	53	arbitration : 4,
	54	__reserved_1 : 4;
	55	} __attribute__ ((packed)) bits;
	56	};
	57
	58	union IO_APIC_reg_03 {
	59	u32 raw;
	60	struct {
	61	u32 boot_DT : 1,
	62	__reserved_1 : 31;
	63	} __attribute__ ((packed)) bits;
	64	};
	65
	66	enum ioapic_irq_destination_types {
	67	dest_Fixed = 0,
	68	dest_LowestPrio = 1,
	69	dest_SMI = 2,
	70	dest__reserved_1 = 3,
	71	dest_NMI = 4,
	72	dest_INIT = 5,
	73	dest__reserved_2 = 6,
	74	dest_ExtINT = 7
	75	};
	76
	77	struct IO_APIC_route_entry {
	78	__u32 vector : 8,
	79	delivery_mode : 3, /* 000: FIXED
	80	* 001: lowest prio
	81	* 111: ExtINT
	82	*/
	83	dest_mode : 1, /* 0: physical, 1: logical */
	84	delivery_status : 1,
	85	polarity : 1,
	86	irr : 1,
	87	trigger : 1, /* 0: edge, 1: level */
88	mask : 1, /* 0: enabled, 1: disabled */
89	__reserved_2 : 15;
90
e1d91978 TG	91	__u32 __reserved_3 : 24,
e1d91978 TG	92	dest : 8;
e1d91978	93	} __attribute__ ((packed));
e1d91978	94
89027d35 SS	95	struct IR_IO_APIC_route_entry {
	96	__u64 vector : 8,
	97	zero : 3,
	98	index2 : 1,
	99	delivery_status : 1,
	100	polarity : 1,
	101	irr : 1,
	102	trigger : 1,
	103	mask : 1,
	104	reserved : 31,
	105	format : 1,
	106	index : 15;
e1d91978 TG	107	} __attribute__ ((packed));
	108
	109	#ifdef CONFIG_X86_IO_APIC
	110
	111	/*
	112	* # of IO-APICs and # of IRQ routing registers
	113	*/
	114	extern int nr_ioapics;
	115	extern int nr_ioapic_registers[MAX_IO_APICS];
	116
	117	/*
	118	* MP-BIOS irq configuration table structures:
	119	*/
	120
a1a33fa3 AM	121	#define MP_MAX_IOAPIC_PIN 127
a1a33fa3 AM	122
ec2cd0a2 AS	123	struct mp_config_ioapic {
	124	unsigned long mp_apicaddr;
	125	unsigned int mp_apicid;
	126	unsigned char mp_type;
	127	unsigned char mp_apicver;
	128	unsigned char mp_flags;
	129	};
	130
2fddb6e2 AS	131	struct mp_config_intsrc {
	132	unsigned int mp_dstapic;
	133	unsigned char mp_type;
	134	unsigned char mp_irqtype;
	135	unsigned short mp_irqflag;
	136	unsigned char mp_srcbus;
	137	unsigned char mp_srcbusirq;
	138	unsigned char mp_dstirq;
9e5c5f1d AS	139	};
9e5c5f1d AS	140
e1d91978	141	/* I/O APIC entries */
ec2cd0a2	142	extern struct mp_config_ioapic mp_ioapics[MAX_IO_APICS];
e1d91978 TG	143
	144	/* # of MP IRQ source entries */
	145	extern int mp_irq_entries;
	146
	147	/* MP IRQ source entries */
2fddb6e2	148	extern struct mp_config_intsrc mp_irqs[MAX_IRQ_SOURCES];
e1d91978 TG	149
	150	/* non-0 if default (table-less) MP configuration */
	151	extern int mpc_default_type;
	152
	153	/* Older SiS APIC requires we rewrite the index register */
	154	extern int sis_apic_bug;
	155
	156	/* 1 if "noapic" boot option passed */
	157	extern int skip_ioapic_setup;
	158
a9322f64 SA	159	/* 1 if "noapic" boot option passed */
	160	extern int noioapicquirk;
	161
9197979b SA	162	/* -1 if "noapic" boot option passed */
	163	extern int noioapicreroute;
	164
35542c5e MR	165	/* 1 if the timer IRQ uses the '8259A Virtual Wire' mode */
	166	extern int timer_through_8259;
	167
e1d91978 TG	168	static inline void disable_ioapic_setup(void)
e1d91978 TG	169	{
33be8333	170	#ifdef CONFIG_PCI
a9322f64	171	noioapicquirk = 1;
9197979b	172	noioapicreroute = -1;
33be8333	173	#endif
e1d91978 TG	174	skip_ioapic_setup = 1;
	175	}
	176
	177	/*
	178	* If we use the IO-APIC for IRQ routing, disable automatic
	179	* assignment of PCI IRQ's.
	180	*/
	181	#define io_apic_assign_pci_irqs \
	182	(mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)
	183
	184	#ifdef CONFIG_ACPI
	185	extern int io_apic_get_unique_id(int ioapic, int apic_id);
	186	extern int io_apic_get_version(int ioapic);
	187	extern int io_apic_get_redir_entries(int ioapic);
	188	extern int io_apic_set_pci_routing(int ioapic, int pin, int irq,
	189	int edge_level, int active_high_low);
e1d91978 TG	190	#endif /* CONFIG_ACPI */
	191
	192	extern int (*ioapic_renumber_irq)(int ioapic, int irq);
	193	extern void ioapic_init_mappings(void);
	194
4dc2f96c SS	195	#ifdef CONFIG_X86_64
	196	extern int save_mask_IO_APIC_setup(void);
	197	extern void restore_IO_APIC_setup(void);
	198	extern void reinit_intr_remapped_IO_APIC(int);
	199	#endif
	200
be5d5350	201	extern void probe_nr_irqs_gsi(void);
9d6a4d08	202
e1d91978 TG	203	#else /* !CONFIG_X86_IO_APIC */
e1d91978 TG	204	#define io_apic_assign_pci_irqs 0
35542c5e	205	static const int timer_through_8259 = 0;
50dd94e0	206	static inline void ioapic_init_mappings(void) { }
e1d91978	207
50dd94e0	208	static inline void probe_nr_irqs_gsi(void) { }
96a388de	209	#endif
e1d91978	210
1965aae3	211	#endif /* _ASM_X86_IO_APIC_H */