142 lines
3.9 KiB
C
142 lines
3.9 KiB
C
#ifndef _ASM_L_HW_IRQ_H
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#define _ASM_L_HW_IRQ_H
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/* required by linux/irq.h */
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#include <asm/irq_vectors.h>
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#include <linux/interrupt.h>
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#include <linux/profile.h>
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#include <asm/atomic.h>
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#include <asm/smp.h>
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#include <asm/current.h>
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#include <asm/sections.h>
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#include <asm/page.h>
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#ifdef CONFIG_L_LOCAL_APIC
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#ifdef CONFIG_PIC
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# define platform_legacy_irq(irq) ((irq) < 16)
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#else
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# define platform_legacy_irq(irq) 0
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#endif
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#endif
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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 atomic_t irq_err_count;
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/* IOAPIC */
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#ifdef CONFIG_PIC
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# define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs))
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extern unsigned long io_apic_irqs;
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#else
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# define IO_APIC_IRQ(x) 1
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#endif
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extern void disable_IO_APIC(void);
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struct io_apic_irq_attr {
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int ioapic;
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int ioapic_pin;
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int trigger;
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int polarity;
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};
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static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
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int ioapic, int ioapic_pin,
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int trigger, int polarity)
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{
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irq_attr->ioapic = ioapic;
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irq_attr->ioapic_pin = ioapic_pin;
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irq_attr->trigger = trigger;
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irq_attr->polarity = polarity;
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}
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/*
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* This is performance-critical, we want to do it O(1)
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*
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* Most irqs are mapped 1:1 with pins.
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*/
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struct irq_cfg {
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struct irq_pin_list *irq_2_pin;
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cpumask_var_t domain;
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cpumask_var_t old_domain;
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u8 vector;
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u8 move_in_progress : 1;
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#ifdef CONFIG_INTR_REMAP
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struct irq_2_iommu irq_2_iommu;
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#endif
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};
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extern int IO_APIC_get_PCI_irq_vector(int domain, int bus, int devfn, int pin,
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struct io_apic_irq_attr *irq_attr);
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extern int IO_APIC_get_fix_irq_vector(int domain, int bus, int slot, int func,
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int irq);
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extern void (*interrupt[NR_VECTORS])(struct pt_regs *regs);
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#ifdef CONFIG_TRACING
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#define trace_interrupt interrupt
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#endif
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#define VECTOR_UNDEFINED -1
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#define VECTOR_RETRIGGERED -2
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typedef int vector_irq_t[NR_VECTORS];
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DECLARE_PER_CPU(vector_irq_t, vector_irq);
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extern void lock_vector_lock(void);
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extern void unlock_vector_lock(void);
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extern void __setup_vector_irq(int cpu);
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#define IO_APIC_VECTOR(irq) ({ \
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struct irq_cfg *__cfg = irq_cfg(irq); \
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(__cfg) ? __cfg->vector : 0; \
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})
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extern void setup_ioapic_dest(void);
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/* Statistics */
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extern atomic_t irq_err_count;
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extern atomic_t irq_mis_count;
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/* EISA */
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extern void eisa_set_level_irq(unsigned int irq);
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/* SMP */
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extern __visible void smp_apic_timer_interrupt(struct pt_regs *);
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extern __visible void smp_spurious_interrupt(struct pt_regs *);
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extern __visible void smp_error_interrupt(struct pt_regs *);
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extern __visible void smp_irq_move_cleanup_interrupt(struct pt_regs *);
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extern __visible void smp_irq_work_interrupt(struct pt_regs *);
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#ifdef CONFIG_SMP
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extern __visible void smp_reschedule_interrupt(struct pt_regs *regs);
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extern __visible void smp_call_function_interrupt(struct pt_regs *regs);
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extern __visible void smp_call_function_single_interrupt(struct pt_regs *regs);
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#endif
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#ifdef CONFIG_TRACING
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/* Interrupt handlers registered during init_IRQ */
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extern void smp_trace_apic_timer_interrupt(struct pt_regs *regs);
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extern void smp_trace_error_interrupt(struct pt_regs *regs);
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extern void smp_trace_irq_work_interrupt(struct pt_regs *regs);
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extern void smp_trace_spurious_interrupt(struct pt_regs *regs);
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extern void smp_trace_reschedule_interrupt(struct pt_regs *regs);
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extern void smp_trace_call_function_interrupt(struct pt_regs *regs);
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extern void smp_trace_call_function_single_interrupt(struct pt_regs *regs);
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#define trace_irq_move_cleanup_interrupt irq_move_cleanup_interrupt
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#endif /* CONFIG_TRACING */
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extern void do_nmi(struct pt_regs * regs);
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extern void l_init_system_handlers_table(void);
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extern void epic_init_system_handlers_table(void);
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extern void setup_PIC_vector_handler(int vector,
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void (*handler)(struct pt_regs *), bool system, char *name);
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extern void do_IRQ(struct pt_regs * regs, unsigned int vector);
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#endif /* _ASM_L_HW_IRQ_H */
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