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#ifndef _ASM_HW_IRQ_H #define _ASM_HW_IRQ_H /* * linux/include/asm/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> */ #include <linux/config.h> #include <linux/profile.h> #include <asm/atomic.h> #include <asm/irq.h> #include <asm/sections.h> struct hw_interrupt_type; /* * Various low-level irq details needed by irq.c, process.c, * time.c, io_apic.c and smp.c * * Interrupt entry/exit code at both C and assembly level */ extern u8 irq_vector[NR_IRQ_VECTORS]; #define IO_APIC_VECTOR(irq) (irq_vector[irq]) #define AUTO_ASSIGN -1 extern void (*interrupt[NR_IRQS])(void); #ifdef CONFIG_SMP fastcall void reschedule_interrupt(void); fastcall void invalidate_interrupt(void); fastcall void call_function_interrupt(void); #endif #ifdef CONFIG_X86_LOCAL_APIC fastcall void apic_timer_interrupt(void); fastcall void error_interrupt(void); fastcall void spurious_interrupt(void); fastcall void thermal_interrupt(struct pt_regs *); #define platform_legacy_irq(irq) ((irq) < 16) #endif void disable_8259A_irq(unsigned int irq); void enable_8259A_irq(unsigned int irq); int i8259A_irq_pending(unsigned int irq); void make_8259A_irq(unsigned int irq); void init_8259A(int aeoi); void FASTCALL(send_IPI_self(int vector)); void init_VISWS_APIC_irqs(void); void setup_IO_APIC(void); void disable_IO_APIC(void); void print_IO_APIC(void); int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn); void send_IPI(int dest, int vector); void setup_ioapic_dest(void); extern unsigned long io_apic_irqs; extern atomic_t irq_err_count; extern atomic_t irq_mis_count; #define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs)) #if defined(CONFIG_X86_IO_APIC) static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) { if (IO_APIC_IRQ(i)) send_IPI_self(IO_APIC_VECTOR(i)); } #else static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {} #endif #endif /* _ASM_HW_IRQ_H */