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https://github.com/riscv-software-src/opensbi.git
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111772353f
In addition to saving some code size, this moves the decision about setting the top-level external interrupt handler to the irqchip core, not the specific driver, which would be needed to support chained interrupt handlers. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org>
50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2022 Ventana Micro Systems Inc.
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*
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* Authors:
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* Anup Patel <apatel@ventanamicro.com>
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*/
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#ifndef __SBI_IRQCHIP_H__
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#define __SBI_IRQCHIP_H__
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#include <sbi/sbi_list.h>
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#include <sbi/sbi_types.h>
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struct sbi_scratch;
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/** irqchip hardware device */
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struct sbi_irqchip_device {
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/** Node in the list of irqchip devices */
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struct sbi_dlist node;
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/** Initialize per-hart state for the current hart */
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int (*warm_init)(struct sbi_irqchip_device *dev);
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/** Handle an IRQ from this irqchip */
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int (*irq_handle)(void);
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};
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/**
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* Process external interrupts
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*
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* This function is called by sbi_trap_handler() to handle external
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* interrupts.
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*
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* @param regs pointer for trap registers
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*/
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int sbi_irqchip_process(void);
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/** Register an irqchip device to receive callbacks */
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void sbi_irqchip_add_device(struct sbi_irqchip_device *dev);
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/** Initialize interrupt controllers */
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int sbi_irqchip_init(struct sbi_scratch *scratch, bool cold_boot);
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/** Exit interrupt controllers */
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void sbi_irqchip_exit(struct sbi_scratch *scratch);
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#endif
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