[mirror_ubuntu-focal-kernel.git] / arch / x86 / include / asm / hw_irq.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_HW_IRQ_H
#define _ASM_X86_HW_IRQ_H

/*
 * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
 *
 * moved some of the old arch/i386/kernel/irq.h to here. VY
 *
 * IRQ/IPI changes taken from work by Thomas Radke
 * <tomsoft@informatik.tu-chemnitz.de>
 *
 * hacked by Andi Kleen for x86-64.
 * unified by tglx
 */

#include <asm/irq_vectors.h>

#define IRQ_MATRIX_BITS		NR_VECTORS

#ifndef __ASSEMBLY__

#include <linux/percpu.h>
#include <linux/profile.h>
#include <linux/smp.h>

#include <linux/atomic.h>
#include <asm/irq.h>
#include <asm/sections.h>

/* Interrupt handlers registered during init_IRQ */
extern asmlinkage void apic_timer_interrupt(void);
extern asmlinkage void x86_platform_ipi(void);
extern asmlinkage void kvm_posted_intr_ipi(void);
extern asmlinkage void kvm_posted_intr_wakeup_ipi(void);
extern asmlinkage void kvm_posted_intr_nested_ipi(void);
extern asmlinkage void error_interrupt(void);
extern asmlinkage void irq_work_interrupt(void);
extern asmlinkage void uv_bau_message_intr1(void);

extern asmlinkage void spurious_interrupt(void);
extern asmlinkage void thermal_interrupt(void);
extern asmlinkage void reschedule_interrupt(void);

extern asmlinkage void irq_move_cleanup_interrupt(void);
extern asmlinkage void reboot_interrupt(void);
extern asmlinkage void threshold_interrupt(void);
extern asmlinkage void deferred_error_interrupt(void);

extern asmlinkage void call_function_interrupt(void);
extern asmlinkage void call_function_single_interrupt(void);

#ifdef	CONFIG_X86_LOCAL_APIC
struct irq_data;
struct pci_dev;
struct msi_desc;

enum irq_alloc_type {
	X86_IRQ_ALLOC_TYPE_IOAPIC = 1,
	X86_IRQ_ALLOC_TYPE_HPET,
	X86_IRQ_ALLOC_TYPE_MSI,
	X86_IRQ_ALLOC_TYPE_MSIX,
	X86_IRQ_ALLOC_TYPE_DMAR,
	X86_IRQ_ALLOC_TYPE_UV,
};

struct irq_alloc_info {
	enum irq_alloc_type	type;
	u32			flags;
	const struct cpumask	*mask;	/* CPU mask for vector allocation */
	union {
		int		unused;
#ifdef	CONFIG_HPET_TIMER
		struct {
			int		hpet_id;
			int		hpet_index;
			void		*hpet_data;
		};
#endif
#ifdef	CONFIG_PCI_MSI
		struct {
			struct pci_dev	*msi_dev;
			irq_hw_number_t	msi_hwirq;
		};
#endif
#ifdef	CONFIG_X86_IO_APIC
		struct {
			int		ioapic_id;
			int		ioapic_pin;
			int		ioapic_node;
			u32		ioapic_trigger : 1;
			u32		ioapic_polarity : 1;
			u32		ioapic_valid : 1;
			struct IO_APIC_route_entry *ioapic_entry;
		};
#endif
#ifdef	CONFIG_DMAR_TABLE
		struct {
			int		dmar_id;
			void		*dmar_data;
		};
#endif
#ifdef	CONFIG_X86_UV
		struct {
			int		uv_limit;
			int		uv_blade;
			unsigned long	uv_offset;
			char		*uv_name;
		};
#endif
#if IS_ENABLED(CONFIG_VMD)
		struct {
			struct msi_desc *desc;
		};
#endif
	};
};

struct irq_cfg {
	unsigned int		dest_apicid;
	unsigned int		vector;
};

extern struct irq_cfg *irq_cfg(unsigned int irq);
extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
extern void lock_vector_lock(void);
extern void unlock_vector_lock(void);
#ifdef CONFIG_SMP
extern void send_cleanup_vector(struct irq_cfg *);
extern void irq_complete_move(struct irq_cfg *cfg);
#else
static inline void send_cleanup_vector(struct irq_cfg *c) { }
static inline void irq_complete_move(struct irq_cfg *c) { }
#endif

extern void apic_ack_edge(struct irq_data *data);
#else	/*  CONFIG_X86_LOCAL_APIC */
static inline void lock_vector_lock(void) {}
static inline void unlock_vector_lock(void) {}
#endif	/* CONFIG_X86_LOCAL_APIC */

/* Statistics */
extern atomic_t irq_err_count;
extern atomic_t irq_mis_count;

extern void elcr_set_level_irq(unsigned int irq);

extern char irq_entries_start[];
#ifdef CONFIG_TRACING
#define trace_irq_entries_start irq_entries_start
#endif

extern char spurious_entries_start[];

#define VECTOR_UNUSED		NULL
#define VECTOR_SHUTDOWN		((void *)-1L)
#define VECTOR_RETRIGGERED	((void *)-2L)

typedef struct irq_desc* vector_irq_t[NR_VECTORS];
DECLARE_PER_CPU(vector_irq_t, vector_irq);

#endif /* !ASSEMBLY_ */

#endif /* _ASM_X86_HW_IRQ_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1965aae3 PA	2	#ifndef _ASM_X86_HW_IRQ_H
1965aae3 PA	3	#define _ASM_X86_HW_IRQ_H
2e088436 TG	4
	5	/*
	6	* (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
	7	*
	8	* moved some of the old arch/i386/kernel/irq.h to here. VY
	9	*
	10	* IRQ/IPI changes taken from work by Thomas Radke
	11	* <tomsoft@informatik.tu-chemnitz.de>
	12	*
	13	* hacked by Andi Kleen for x86-64.
	14	* unified by tglx
	15	*/
	16
9b7dc567	17	#include <asm/irq_vectors.h>
2e088436	18
0fa115da TG	19	#define IRQ_MATRIX_BITS NR_VECTORS
0fa115da TG	20
2e088436 TG	21	#ifndef __ASSEMBLY__
	22
	23	#include <linux/percpu.h>
	24	#include <linux/profile.h>
	25	#include <linux/smp.h>
	26
60063497	27	#include <linux/atomic.h>
2e088436 TG	28	#include <asm/irq.h>
	29	#include <asm/sections.h>
	30
2e088436	31	/* Interrupt handlers registered during init_IRQ */
1d9090e2 AK	32	extern asmlinkage void apic_timer_interrupt(void);
	33	extern asmlinkage void x86_platform_ipi(void);
	34	extern asmlinkage void kvm_posted_intr_ipi(void);
f6b3c72c	35	extern asmlinkage void kvm_posted_intr_wakeup_ipi(void);
210f84b0	36	extern asmlinkage void kvm_posted_intr_nested_ipi(void);
1d9090e2 AK	37	extern asmlinkage void error_interrupt(void);
1d9090e2 AK	38	extern asmlinkage void irq_work_interrupt(void);
151ad17f	39	extern asmlinkage void uv_bau_message_intr1(void);
1d9090e2 AK	40
	41	extern asmlinkage void spurious_interrupt(void);
	42	extern asmlinkage void thermal_interrupt(void);
	43	extern asmlinkage void reschedule_interrupt(void);
	44
1d9090e2 AK	45	extern asmlinkage void irq_move_cleanup_interrupt(void);
	46	extern asmlinkage void reboot_interrupt(void);
	47	extern asmlinkage void threshold_interrupt(void);
24fd78a8	48	extern asmlinkage void deferred_error_interrupt(void);
1d9090e2 AK	49
	50	extern asmlinkage void call_function_interrupt(void);
	51	extern asmlinkage void call_function_single_interrupt(void);
2e088436	52
26011eee	53	#ifdef CONFIG_X86_LOCAL_APIC
74afab7a	54	struct irq_data;
947045a2 JL	55	struct pci_dev;
	56	struct msi_desc;
	57
	58	enum irq_alloc_type {
	59	X86_IRQ_ALLOC_TYPE_IOAPIC = 1,
	60	X86_IRQ_ALLOC_TYPE_HPET,
	61	X86_IRQ_ALLOC_TYPE_MSI,
	62	X86_IRQ_ALLOC_TYPE_MSIX,
0921f1da	63	X86_IRQ_ALLOC_TYPE_DMAR,
43fe1abc	64	X86_IRQ_ALLOC_TYPE_UV,
947045a2	65	};
b5dc8e6c JL	66
b5dc8e6c JL	67	struct irq_alloc_info {
947045a2	68	enum irq_alloc_type type;
b5dc8e6c JL	69	u32 flags;
b5dc8e6c JL	70	const struct cpumask mask; / CPU mask for vector allocation */
947045a2 JL	71	union {
	72	int unused;
	73	#ifdef CONFIG_HPET_TIMER
	74	struct {
	75	int hpet_id;
	76	int hpet_index;
	77	void *hpet_data;
	78	};
	79	#endif
	80	#ifdef CONFIG_PCI_MSI
	81	struct {
	82	struct pci_dev *msi_dev;
	83	irq_hw_number_t msi_hwirq;
	84	};
	85	#endif
	86	#ifdef CONFIG_X86_IO_APIC
	87	struct {
	88	int ioapic_id;
	89	int ioapic_pin;
	90	int ioapic_node;
	91	u32 ioapic_trigger : 1;
	92	u32 ioapic_polarity : 1;
	93	u32 ioapic_valid : 1;
	94	struct IO_APIC_route_entry *ioapic_entry;
	95	};
0921f1da JL	96	#endif
	97	#ifdef CONFIG_DMAR_TABLE
	98	struct {
	99	int dmar_id;
	100	void *dmar_data;
	101	};
49e07d8f	102	#endif
43fe1abc JL	103	#ifdef CONFIG_X86_UV
	104	struct {
	105	int uv_limit;
	106	int uv_blade;
	107	unsigned long uv_offset;
	108	char *uv_name;
	109	};
185a383a KB	110	#endif
	111	#if IS_ENABLED(CONFIG_VMD)
	112	struct {
	113	struct msi_desc *desc;
	114	};
947045a2 JL	115	#endif
947045a2 JL	116	};
b5dc8e6c JL	117	};
b5dc8e6c JL	118
9338ad6f	119	struct irq_cfg {
5f0052f9	120	unsigned int dest_apicid;
ba224fea	121	unsigned int vector;
9338ad6f DS	122	};
9338ad6f DS	123
55a0e2b1 JL	124	extern struct irq_cfg *irq_cfg(unsigned int irq);
55a0e2b1 JL	125	extern struct irq_cfg irqd_cfg(struct irq_data irq_data);
74afab7a JL	126	extern void lock_vector_lock(void);
74afab7a JL	127	extern void unlock_vector_lock(void);
e32c67e0	128	#ifdef CONFIG_SMP
9338ad6f	129	extern void send_cleanup_vector(struct irq_cfg *);
f0e5bf75	130	extern void irq_complete_move(struct irq_cfg *cfg);
e32c67e0 JL	131	#else
e32c67e0 JL	132	static inline void send_cleanup_vector(struct irq_cfg *c) { }
f0e5bf75	133	static inline void irq_complete_move(struct irq_cfg *c) { }
e32c67e0	134	#endif
7ec13187	135
74afab7a	136	extern void apic_ack_edge(struct irq_data *data);
74afab7a	137	#else /* CONFIG_X86_LOCAL_APIC */
26011eee JL	138	static inline void lock_vector_lock(void) {}
26011eee JL	139	static inline void unlock_vector_lock(void) {}
74afab7a	140	#endif /* CONFIG_X86_LOCAL_APIC */
26011eee	141
2e088436 TG	142	/* Statistics */
	143	extern atomic_t irq_err_count;
	144	extern atomic_t irq_mis_count;
	145
ea6cd250	146	extern void elcr_set_level_irq(unsigned int irq);
1a331957	147
3304c9c3	148	extern char irq_entries_start[];
25c74b10	149	#ifdef CONFIG_TRACING
3304c9c3	150	#define trace_irq_entries_start irq_entries_start
25c74b10	151	#endif
497c9a19	152
f8a8fe61 TG	153	extern char spurious_entries_start[];
f8a8fe61 TG	154
a782a7e4	155	#define VECTOR_UNUSED NULL
e30c44e2 HK	156	#define VECTOR_SHUTDOWN ((void *)-1L)
e30c44e2 HK	157	#define VECTOR_RETRIGGERED ((void *)-2L)
9345005f	158
a782a7e4	159	typedef struct irq_desc* vector_irq_t[NR_VECTORS];
22dc12d1	160	DECLARE_PER_CPU(vector_irq_t, vector_irq);
2e088436	161
22dc12d1 TG	162	#endif /* !ASSEMBLY_ */
22dc12d1 TG	163
1965aae3	164	#endif /* _ASM_X86_HW_IRQ_H */