77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
/*
|
|
* Copyright (C) 2018 Intel Corporation. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#ifndef IOAPIC_H
|
|
#define IOAPIC_H
|
|
|
|
#include <apicreg.h>
|
|
|
|
#define NR_LEGACY_IRQ 16U
|
|
#define NR_LEGACY_PIN NR_LEGACY_IRQ
|
|
|
|
struct ioapic_info {
|
|
uint8_t id;
|
|
uint32_t addr;
|
|
uint32_t gsi_base;
|
|
};
|
|
|
|
void ioapic_setup_irqs(void);
|
|
|
|
bool ioapic_irq_is_gsi(uint32_t irq);
|
|
uint32_t ioapic_irq_to_pin(uint32_t irq);
|
|
int32_t init_ioapic_id_info(void);
|
|
uint8_t ioapic_irq_to_ioapic_id(uint32_t irq);
|
|
|
|
/**
|
|
* @brief Get irq num from pin num
|
|
*
|
|
* @param[in] pin The pin number
|
|
*/
|
|
uint32_t ioapic_pin_to_irq(uint32_t pin);
|
|
|
|
/**
|
|
* @brief Set the redirection table entry
|
|
*
|
|
* Set the redirection table entry of an interrupt
|
|
*
|
|
* @param[in] irq The number of irq to set
|
|
* @param[in] rte Union of ioapic_rte to set
|
|
*/
|
|
void ioapic_set_rte(uint32_t irq, union ioapic_rte rte);
|
|
|
|
/**
|
|
* @brief Get the redirection table entry
|
|
*
|
|
* Get the redirection table entry of an interrupt
|
|
*
|
|
* @param[in] irq The number of irq to fetch RTE
|
|
* @param[inout] rte Pointer to union ioapic_rte to return result RTE
|
|
*
|
|
* @pre rte != NULL
|
|
*/
|
|
void ioapic_get_rte(uint32_t irq, union ioapic_rte *rte);
|
|
|
|
void suspend_ioapic(void);
|
|
void resume_ioapic(void);
|
|
|
|
void ioapic_gsi_mask_irq(uint32_t irq);
|
|
void ioapic_gsi_unmask_irq(uint32_t irq);
|
|
|
|
void ioapic_get_rte_entry(void *ioapic_addr, uint32_t pin, union ioapic_rte *rte);
|
|
|
|
struct gsi_table {
|
|
uint8_t ioapic_id;
|
|
uint32_t pin;
|
|
void *addr;
|
|
};
|
|
|
|
void *ioapic_get_gsi_irq_addr(uint32_t irq_num);
|
|
uint32_t ioapic_get_nr_gsi(void);
|
|
uint32_t get_pic_pin_from_ioapic_pin(uint32_t pin_index);
|
|
bool ioapic_is_pin_valid(uint32_t pin);
|
|
|
|
#endif /* IOAPIC_H */
|