35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
|
#ifndef _KERNEL_DRIVERS_IRQ_IRQ_API_H
|
||
|
|
#define _KERNEL_DRIVERS_IRQ_IRQ_API_H
|
||
|
|
|
||
|
|
#include <libkern/types.h>
|
||
|
|
|
||
|
|
// This value shows the maximum number of irqs OS supports. It is irqdev independent,
|
||
|
|
// thus irqdev implementations should double check the irqlines.
|
||
|
|
#define IRQ_HANDLERS_MAX 256
|
||
|
|
|
||
|
|
#define ALL_CPU_MASK 0xff
|
||
|
|
#define BOOT_CPU_MASK 0x01
|
||
|
|
|
||
|
|
typedef int irq_flags_t;
|
||
|
|
typedef int irq_line_t;
|
||
|
|
typedef uint8_t irq_priority_t;
|
||
|
|
typedef void (*irq_handler_t)(irq_line_t line);
|
||
|
|
|
||
|
|
// Currently flags maps to devtree irq_flags.
|
||
|
|
// Later we might need to enhance irq_flags_from_devtree() to use as translator.
|
||
|
|
#define IRQ_FLAG_EDGE_TRIGGERED (1 << 0)
|
||
|
|
|
||
|
|
struct irqdev_descritptor {
|
||
|
|
uint32_t (*interrupt_descriptor)();
|
||
|
|
void (*end_interrupt)(uint32_t int_desc);
|
||
|
|
void (*enable_irq)(irq_line_t line, irq_priority_t prior, irq_flags_t type, int cpu_mask);
|
||
|
|
};
|
||
|
|
typedef struct irqdev_descritptor irqdev_descritptor_t;
|
||
|
|
|
||
|
|
static inline irq_flags_t irq_flags_from_devtree(uint32_t devtree_irq_flags) { return (irq_flags_t)devtree_irq_flags; }
|
||
|
|
|
||
|
|
void irq_register_handler(irq_line_t line, irq_priority_t prior, irq_flags_t flags, irq_handler_t func, int cpu_mask);
|
||
|
|
void irq_set_dev(irqdev_descritptor_t irqdev_desc);
|
||
|
|
irq_line_t irqline_from_id(int id);
|
||
|
|
|
||
|
|
#endif
|