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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ASM_HW_IRQ_H
2#define _ASM_HW_IRQ_H
3
4/*
5 * linux/include/asm/hw_irq.h
6 *
7 * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
8 *
9 * moved some of the old arch/i386/kernel/irq.h to here. VY
10 *
11 * IRQ/IPI changes taken from work by Thomas Radke
12 * <tomsoft@informatik.tu-chemnitz.de>
13 */
14
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/profile.h>
16#include <asm/atomic.h>
17#include <asm/irq.h>
18#include <asm/sections.h>
19
Keith Owens45486f82006-06-26 13:59:41 +020020#define NMI_VECTOR 0x02
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022/*
23 * Various low-level irq details needed by irq.c, process.c,
24 * time.c, io_apic.c and smp.c
25 *
26 * Interrupt entry/exit code at both C and assembly level
27 */
28
Linus Torvalds1da177e2005-04-16 15:20:36 -070029extern void (*interrupt[NR_IRQS])(void);
30
31#ifdef CONFIG_SMP
32fastcall void reschedule_interrupt(void);
33fastcall void invalidate_interrupt(void);
34fastcall void call_function_interrupt(void);
35#endif
36
37#ifdef CONFIG_X86_LOCAL_APIC
38fastcall void apic_timer_interrupt(void);
39fastcall void error_interrupt(void);
40fastcall void spurious_interrupt(void);
David Howells7d12e782006-10-05 14:55:46 +010041fastcall void thermal_interrupt(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#define platform_legacy_irq(irq) ((irq) < 16)
43#endif
44
45void disable_8259A_irq(unsigned int irq);
46void enable_8259A_irq(unsigned int irq);
47int i8259A_irq_pending(unsigned int irq);
48void make_8259A_irq(unsigned int irq);
49void init_8259A(int aeoi);
50void FASTCALL(send_IPI_self(int vector));
51void init_VISWS_APIC_irqs(void);
52void setup_IO_APIC(void);
53void disable_IO_APIC(void);
54void print_IO_APIC(void);
55int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
56void send_IPI(int dest, int vector);
57void setup_ioapic_dest(void);
58
59extern unsigned long io_apic_irqs;
60
61extern atomic_t irq_err_count;
62extern atomic_t irq_mis_count;
63
64#define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))
65
Linus Torvalds1da177e2005-04-16 15:20:36 -070066#endif /* _ASM_HW_IRQ_H */