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b55bb4cdcb
It is possible to have platform where an irqchip device targets a subset of harts and there are multiple irqchip devices to cover all harts. To support this scenario: 1) Add target_harts hartmask to struct sbi_irqchip_device which represents the set of harts targetted by the irqchip device 2) Call warm_init() and process_hwirqs() callbacks of an irqchip device on a hart only if irqchip device targets that particular hart Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260213055342.3124872-6-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel <anup@brainfault.org>
54 lines
1.2 KiB
C
54 lines
1.2 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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/** 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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/** 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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