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