40 lines
979 B
C
40 lines
979 B
C
/*
|
|
* Copyright (c) 2016 Cadence Design Systems, Inc.
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <kernel.h>
|
|
#include <irq_offload.h>
|
|
#include <arch/xtensa/arch.h>
|
|
#include <arch/xtensa/xtensa_api.h>
|
|
|
|
/*
|
|
* Xtensa core should support software interrupt in order to allow using
|
|
* irq_offload feature
|
|
*/
|
|
|
|
static irq_offload_routine_t offload_routine;
|
|
static void *offload_param;
|
|
|
|
/* Called by ISR dispatcher */
|
|
void z_irq_do_offload(void *unused)
|
|
{
|
|
ARG_UNUSED(unused);
|
|
offload_routine(offload_param);
|
|
}
|
|
|
|
void arch_irq_offload(irq_offload_routine_t routine, void *parameter)
|
|
{
|
|
IRQ_CONNECT(CONFIG_IRQ_OFFLOAD_INTNUM, XCHAL_EXCM_LEVEL,
|
|
z_irq_do_offload, NULL, 0);
|
|
arch_irq_disable(CONFIG_IRQ_OFFLOAD_INTNUM);
|
|
offload_routine = routine;
|
|
offload_param = parameter;
|
|
z_xt_set_intset(BIT(CONFIG_IRQ_OFFLOAD_INTNUM));
|
|
/*
|
|
* Enable the software interrupt, in case it is disabled, so that IRQ
|
|
* offload is serviced.
|
|
*/
|
|
arch_irq_enable(CONFIG_IRQ_OFFLOAD_INTNUM);
|
|
}
|