56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __INC_SYS_APIC_H
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#define __INC_SYS_APIC_H
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#include <drivers/ioapic.h>
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#include <drivers/loapic.h>
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#define _IRQ_TRIGGER_EDGE IOAPIC_EDGE
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#define _IRQ_TRIGGER_LEVEL IOAPIC_LEVEL
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#define _IRQ_POLARITY_HIGH IOAPIC_HIGH
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#define _IRQ_POLARITY_LOW IOAPIC_LOW
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#ifndef _ASMLANGUAGE
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#define LOAPIC_IRQ_BASE CONFIG_IOAPIC_NUM_RTES
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#define LOAPIC_IRQ_COUNT 6 /* Default to LOAPIC_TIMER to LOAPIC_ERROR */
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/* irq_controller.h interface */
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void __irq_controller_irq_config(unsigned int vector, unsigned int irq,
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u32_t flags);
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int __irq_controller_isr_vector_get(void);
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static inline void __irq_controller_eoi(void)
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{
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#if CONFIG_EOI_FORWARDING_BUG
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_lakemont_eoi();
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#else
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*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_EOI) = 0;
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#endif
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}
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#else /* _ASMLANGUAGE */
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#if CONFIG_EOI_FORWARDING_BUG
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.macro __irq_controller_eoi_macro
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call _lakemont_eoi
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.endm
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#else
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.macro __irq_controller_eoi_macro
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xorl %eax, %eax /* zeroes eax */
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loapic_eoi_reg = (CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_EOI)
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movl %eax, loapic_eoi_reg /* tell LOAPIC the IRQ is handled */
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.endm
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#endif /* CONFIG_EOI_FORWARDING_BUG */
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#endif /* _ASMLANGUAGE */
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#endif /* __INC_SYS_APIC_H */
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