mirror of
https://github.com/riscv-software-src/opensbi.git
synced 2026-05-23 14:21:32 +01:00
Anup Patel
adb4caf765
The interrupt client should be allowed to specify the line sensing type of the hwirqs for which it is registering handler. To support this, add hwirq_flags parameter to hwirq_setup() callback provided by the irqchip driver. Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260423052339.356900-4-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel <anup@brainfault.org>
123 lines
3.7 KiB
C
123 lines
3.7 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 (private) */
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struct sbi_dlist node;
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/** Internal data of all hardware interrupts of this irqchip (private) */
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struct sbi_irqchip_hwirq_data *hwirqs;
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/** List of interrupt handlers */
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struct sbi_dlist handler_list;
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/** Unique ID of this irqchip */
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u32 id;
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/** Number of hardware IRQs of this irqchip */
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u32 num_hwirq;
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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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/** Setup a hardware interrupt of this irqchip */
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int (*hwirq_setup)(struct sbi_irqchip_device *chip, u32 hwirq,
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u32 hwirq_flags);
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#define SBI_HWIRQ_FLAGS_NONE 0x00000000UL
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#define SBI_HWIRQ_FLAGS_EDGE_RISING 0x00000001UL
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#define SBI_HWIRQ_FLAGS_EDGE_FALLING 0x00000002UL
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#define SBI_HWIRQ_FLAGS_EDGE_BOTH (SBI_HWIRQ_FLAGS_EDGE_RISING | \
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SBI_HWIRQ_FLAGS_EDGE_FALLING)
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#define SBI_HWIRQ_FLAGS_LEVEL_HIGH 0x00000004UL
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#define SBI_HWIRQ_FLAGS_LEVEL_LOW 0x00000008UL
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#define SBI_HWIRQ_FLAGS_LEVEL_SENSE_MASK 0x0000000fUL
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/** Cleanup a hardware interrupt of this irqchip */
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void (*hwirq_cleanup)(struct sbi_irqchip_device *chip, u32 hwirq);
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/** End of hardware interrupt of this irqchip */
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void (*hwirq_eoi)(struct sbi_irqchip_device *chip, u32 hwirq);
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/** Mask a hardware interrupt of this irqchip */
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void (*hwirq_mask)(struct sbi_irqchip_device *chip, u32 hwirq);
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/** Unmask a hardware interrupt of this irqchip */
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void (*hwirq_unmask)(struct sbi_irqchip_device *chip, u32 hwirq);
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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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/**
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* Process a hwirq of an irqchip device
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*
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* This function is called by irqchip drivers to handle hardware
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* interrupts of the irqchip.
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*/
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int sbi_irqchip_process_hwirq(struct sbi_irqchip_device *chip, u32 hwirq);
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/** Unmask a hardware interrupt */
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int sbi_irqchip_unmask_hwirq(struct sbi_irqchip_device *chip, u32 hwirq);
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/** Mask a hardware interrupt */
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int sbi_irqchip_mask_hwirq(struct sbi_irqchip_device *chip, u32 hwirq);
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/** Default raw hardware interrupt handler */
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int sbi_irqchip_raw_handler_default(struct sbi_irqchip_device *chip, u32 hwirq);
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/** Set raw hardware interrupt handler */
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int sbi_irqchip_set_raw_handler(struct sbi_irqchip_device *chip, u32 hwirq,
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int (*raw_hndl)(struct sbi_irqchip_device *, u32));
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/** Register a hardware interrupt handler */
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int sbi_irqchip_register_handler(struct sbi_irqchip_device *chip,
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u32 first_hwirq, u32 num_hwirq, u32 hwirq_flags,
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int (*callback)(u32 hwirq, void *opaque), void *opaque);
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/** Unregister a hardware interrupt handler */
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int sbi_irqchip_unregister_handler(struct sbi_irqchip_device *chip,
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u32 first_hwirq, u32 num_hwirq);
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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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