1 #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
15 #include <linux/profile.h>
16 #include <asm/atomic.h>
17 #include <asm/irq.h>
18 #include <asm/sections.h>
19
20 #define NMI_VECTOR 0x02
21
22 /*
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
29 extern void (*const interrupt[NR_IRQS])(void);
30
31 #ifdef CONFIG_SMP
32 void reschedule_interrupt(void);
33 void invalidate_interrupt(void);
34 void call_function_interrupt(void);
35 #endif
36
37 #ifdef CONFIG_X86_LOCAL_APIC
38 void apic_timer_interrupt(void);
39 void error_interrupt(void);
40 void spurious_interrupt(void);
41 void thermal_interrupt(void);
42 #define platform_legacy_irq(irq) ((irq) < 16)
43 #endif
44
45 void disable_8259A_irq(unsigned int irq);
46 void enable_8259A_irq(unsigned int irq);
47 int i8259A_irq_pending(unsigned int irq);
48 void make_8259A_irq(unsigned int irq);
49 void init_8259A(int aeoi);
50 void send_IPI_self(int vector);
51 void init_VISWS_APIC_irqs(void);
52 void setup_IO_APIC(void);
53 void disable_IO_APIC(void);
54 void print_IO_APIC(void);
55 int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
56 void send_IPI(int dest, int vector);
57 void setup_ioapic_dest(void);
58
59 extern unsigned long io_apic_irqs;
60
61 extern atomic_t irq_err_count;
62 extern atomic_t irq_mis_count;
63
64 #define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))
65
66 #endif /* _ASM_HW_IRQ_H */
67
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