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#ifndef _ASM_HW_IRQ_H
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#define _ASM_HW_IRQ_H
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/*
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 *      linux/include/asm/hw_irq.h
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 *
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 *      (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
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 *
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 *      moved some of the old arch/i386/kernel/irq.h to here. VY
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 *
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 *      IRQ/IPI changes taken from work by Thomas Radke
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 *      <tomsoft@informatik.tu-chemnitz.de>
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 */
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#include <linux/config.h>
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#include <linux/profile.h>
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#include <asm/atomic.h>
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#include <asm/irq.h>
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#include <asm/sections.h>
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/*
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 * Various low-level irq details needed by irq.c, process.c,
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 * time.c, io_apic.c and smp.c
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 *
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 * Interrupt entry/exit code at both C and assembly level
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 */
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extern u8 irq_vector[NR_IRQ_VECTORS];
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#define IO_APIC_VECTOR(irq)     ((int)irq_vector[irq])
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extern void (*interrupt[NR_IRQS])(void);
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#ifdef CONFIG_SMP
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asmlinkage void reschedule_interrupt(void);
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asmlinkage void invalidate_interrupt(void);
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asmlinkage void call_function_interrupt(void);
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#endif
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#ifdef CONFIG_X86_LOCAL_APIC
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asmlinkage void apic_timer_interrupt(void);
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asmlinkage void error_interrupt(void);
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asmlinkage void spurious_interrupt(void);
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asmlinkage void thermal_interrupt(struct pt_regs);
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#endif
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void mask_irq(unsigned int irq);
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void unmask_irq(unsigned int irq);
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void disable_8259A_irq(unsigned int irq);
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void enable_8259A_irq(unsigned int irq);
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int i8259A_irq_pending(unsigned int irq);
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void make_8259A_irq(unsigned int irq);
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void init_8259A(int aeoi);
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void FASTCALL(send_IPI_self(int vector));
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void init_VISWS_APIC_irqs(void);
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void setup_IO_APIC(void);
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void disable_IO_APIC(void);
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void print_IO_APIC(void);
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int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
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void send_IPI(int dest, int vector);
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void setup_ioapic_dest(cpumask_t mask);
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extern unsigned long io_apic_irqs;
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extern atomic_t irq_err_count;
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extern atomic_t irq_mis_count;
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#define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))
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/*
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 * The profiling function is SMP safe. (nothing can mess
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 * around with "current", and the profiling counters are
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 * updated with atomic operations). This is especially
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 * useful with a profiling multiplier != 1
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 */
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static inline void x86_do_profile(struct pt_regs * regs)
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{
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        unsigned long eip;
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        extern unsigned long prof_cpu_mask;
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        profile_hook(regs);
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        if (user_mode(regs))
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                return;
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        if (!prof_buffer)
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                return;
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        eip = regs->eip;
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        /*
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         * Only measure the CPUs specified by /proc/irq/prof_cpu_mask.
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         * (default is all CPUs.)
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         */
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        if (!((1<<smp_processor_id()) & prof_cpu_mask))
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                return;
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        eip -= (unsigned long)_stext;
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        eip >>= prof_shift;
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        /*
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         * Don't ignore out-of-bounds EIP values silently,
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         * put them into the last histogram slot, so if
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         * present, they will show up as a sharp peak.
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         */
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        if (eip > prof_len-1)
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                eip = prof_len-1;
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        atomic_inc((atomic_t *)&prof_buffer[eip]);
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}
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#if defined(CONFIG_X86_IO_APIC)
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static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i)
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{
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        if (IO_APIC_IRQ(i))
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                send_IPI_self(IO_APIC_VECTOR(i));
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}
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#else
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static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
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#endif
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#endif /* _ASM_HW_IRQ_H */