5 * linux/include/asm/hw_irq.h
7 * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
9 * moved some of the old arch/i386/kernel/irq.h to here. VY
11 * IRQ/IPI changes taken from work by Thomas Radke
12 * <tomsoft@informatik.tu-chemnitz.de>
15 #include <linux/profile.h>
16 #include <asm/atomic.h>
18 #include <asm/sections.h>
21 * Various low-level irq details needed by irq.c, process.c,
22 * time.c, io_apic.c and smp.c
24 * Interrupt entry/exit code at both C and assembly level
27 extern void (*interrupt[NR_IRQS])(void);
30 fastcall void reschedule_interrupt(void);
31 fastcall void invalidate_interrupt(void);
32 fastcall void call_function_interrupt(void);
35 #ifdef CONFIG_X86_LOCAL_APIC
36 fastcall void apic_timer_interrupt(void);
37 fastcall void error_interrupt(void);
38 fastcall void spurious_interrupt(void);
39 fastcall void thermal_interrupt(void);
40 #define platform_legacy_irq(irq) ((irq) < 16)
43 void disable_8259A_irq(unsigned int irq);
44 void enable_8259A_irq(unsigned int irq);
45 int i8259A_irq_pending(unsigned int irq);
46 void make_8259A_irq(unsigned int irq);
47 void init_8259A(int aeoi);
48 void FASTCALL(send_IPI_self(int vector));
49 void init_VISWS_APIC_irqs(void);
50 void setup_IO_APIC(void);
51 void disable_IO_APIC(void);
52 void print_IO_APIC(void);
53 int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
54 void send_IPI(int dest, int vector);
55 void setup_ioapic_dest(void);
57 extern unsigned long io_apic_irqs;
59 extern atomic_t irq_err_count;
60 extern atomic_t irq_mis_count;
62 #define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))
64 #endif /* _ASM_HW_IRQ_H */