94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/* loapic.h - public LOAPIC APIs */
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/*
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* Copyright (c) 2015 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __INCloapich
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#define __INCloapich
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Local APIC Register Offset */
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#define LOAPIC_ID 0x020 /* Local APIC ID Reg */
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#define LOAPIC_VER 0x030 /* Local APIC Version Reg */
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#define LOAPIC_TPR 0x080 /* Task Priority Reg */
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#define LOAPIC_APR 0x090 /* Arbitration Priority Reg */
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#define LOAPIC_PPR 0x0a0 /* Processor Priority Reg */
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#define LOAPIC_EOI 0x0b0 /* EOI Reg */
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#define LOAPIC_LDR 0x0d0 /* Logical Destination Reg */
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#define LOAPIC_DFR 0x0e0 /* Destination Format Reg */
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#define LOAPIC_SVR 0x0f0 /* Spurious Interrupt Reg */
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#define LOAPIC_ISR 0x100 /* In-service Reg */
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#define LOAPIC_TMR 0x180 /* Trigger Mode Reg */
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#define LOAPIC_IRR 0x200 /* Interrupt Request Reg */
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#define LOAPIC_ESR 0x280 /* Error Status Reg */
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#define LOAPIC_ICRLO 0x300 /* Interrupt Command Reg */
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#define LOAPIC_ICRHI 0x310 /* Interrupt Command Reg */
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#define LOAPIC_TIMER 0x320 /* LVT (Timer) */
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#define LOAPIC_THERMAL 0x330 /* LVT (Thermal) */
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#define LOAPIC_PMC 0x340 /* LVT (PMC) */
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#define LOAPIC_LINT0 0x350 /* LVT (LINT0) */
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#define LOAPIC_LINT1 0x360 /* LVT (LINT1) */
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#define LOAPIC_ERROR 0x370 /* LVT (ERROR) */
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#define LOAPIC_TIMER 0x320 /* LVT (Timer) */
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#define LOAPIC_TIMER_ICR 0x380 /* Timer Initial Count Reg */
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#define LOAPIC_TIMER_CCR 0x390 /* Timer Current Count Reg */
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#define LOAPIC_TIMER_CONFIG 0x3e0 /* Timer Divide Config Reg */
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/* Local APIC Vector Table Bits */
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#define LOAPIC_LVT_MASKED 0x00010000 /* mask */
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#ifndef _ASMLANGUAGE
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#include <device.h>
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extern void _loapic_int_vec_set(unsigned int irq, unsigned int vector);
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extern void _loapic_irq_enable(unsigned int irq);
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extern void _loapic_irq_disable(unsigned int irq);
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extern void _loapic_enable(void);
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extern void _loapic_disable(void);
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extern int _loapic_isr_vector_get(void);
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#if CONFIG_EOI_FORWARDING_BUG
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extern void _lakemont_eoi(void);
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#endif
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/**
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*
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* @brief send EOI (End Of Interrupt) signal to Local APIC
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*
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* This routine sends an EOI signal to the Local APIC's interrupting source.
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*
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* @return N/A
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*/
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static inline void _loapic_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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#endif /* _ASMLANGUAGE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCloapich */
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