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https://github.com/riscv-software-src/opensbi.git
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e8ebd1fbc6
Allow locating irqchip device instance using a unique 32-bit ID. This 32-bit unique ID can be set by the irqchip driver at the time of adding irqchip device. Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260213055342.3124872-8-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel <anup@brainfault.org>
60 lines
1.4 KiB
C
60 lines
1.4 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_hartmask.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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/** Unique ID of this irqchip */
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u32 id;
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/** Set of harts targetted by this irqchip */
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struct sbi_hartmask target_harts;
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/** Initialize per-hart state for the current hart */
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int (*warm_init)(struct sbi_irqchip_device *chip);
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/** Process hardware interrupts from this irqchip */
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int (*process_hwirqs)(struct sbi_irqchip_device *chip);
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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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/** Find an irqchip device based on unique ID */
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struct sbi_irqchip_device *sbi_irqchip_find_device(u32 id);
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/** Register an irqchip device to receive callbacks */
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int sbi_irqchip_add_device(struct sbi_irqchip_device *chip);
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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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