100 lines
1.7 KiB
C
100 lines
1.7 KiB
C
/*
|
|
* Copyright (c) 2016 Intel Corporation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief Nios II C-domain interrupt management code for use with Internal
|
|
* Interrupt Controller (IIC)
|
|
*/
|
|
|
|
|
|
#include <kernel.h>
|
|
#include <kernel_structs.h>
|
|
#include <arch/cpu.h>
|
|
#include <irq.h>
|
|
#include <misc/printk.h>
|
|
#include <sw_isr_table.h>
|
|
#include <logging/kernel_event_logger.h>
|
|
#include <ksched.h>
|
|
|
|
void _irq_spurious(void *unused)
|
|
{
|
|
ARG_UNUSED(unused);
|
|
printk("Spurious interrupt detected! ipending: %x\n",
|
|
_nios2_creg_read(NIOS2_CR_IPENDING));
|
|
_NanoFatalErrorHandler(_NANO_ERR_SPURIOUS_INT, &_default_esf);
|
|
}
|
|
|
|
|
|
void _arch_irq_enable(unsigned int irq)
|
|
{
|
|
u32_t ienable;
|
|
int key;
|
|
|
|
key = irq_lock();
|
|
|
|
ienable = _nios2_creg_read(NIOS2_CR_IENABLE);
|
|
ienable |= (1 << irq);
|
|
_nios2_creg_write(NIOS2_CR_IENABLE, ienable);
|
|
|
|
irq_unlock(key);
|
|
};
|
|
|
|
|
|
|
|
void _arch_irq_disable(unsigned int irq)
|
|
{
|
|
u32_t ienable;
|
|
int key;
|
|
|
|
key = irq_lock();
|
|
|
|
ienable = _nios2_creg_read(NIOS2_CR_IENABLE);
|
|
ienable &= ~(1 << irq);
|
|
_nios2_creg_write(NIOS2_CR_IENABLE, ienable);
|
|
|
|
irq_unlock(key);
|
|
};
|
|
|
|
|
|
/**
|
|
* @brief Interrupt demux function
|
|
*
|
|
* Given a bitfield of pending interrupts, execute the appropriate handler
|
|
*
|
|
* @param ipending Bitfield of interrupts
|
|
*/
|
|
void _enter_irq(u32_t ipending)
|
|
{
|
|
int index;
|
|
|
|
_kernel.nested++;
|
|
|
|
#ifdef CONFIG_IRQ_OFFLOAD
|
|
_irq_do_offload();
|
|
#endif
|
|
|
|
while (ipending) {
|
|
struct _isr_table_entry *ite;
|
|
|
|
#ifdef CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT
|
|
_sys_k_event_logger_interrupt();
|
|
#endif
|
|
|
|
index = find_lsb_set(ipending) - 1;
|
|
ipending &= ~(1 << index);
|
|
|
|
ite = &_sw_isr_table[index];
|
|
ite->isr(ite->arg);
|
|
}
|
|
|
|
_kernel.nested--;
|
|
#ifdef CONFIG_STACK_SENTINEL
|
|
_check_stack_sentinel();
|
|
#endif
|
|
}
|
|
|