101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
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* Copyright (C) 2018-2022 Linaro Ltd.
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*/
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#ifndef _IPA_INTERRUPT_H_
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#define _IPA_INTERRUPT_H_
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#include <linux/types.h>
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#include <linux/bits.h>
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struct ipa;
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struct ipa_interrupt;
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enum ipa_irq_id;
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/**
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* ipa_interrupt_suspend_enable - Enable TX_SUSPEND for an endpoint
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* @interrupt: IPA interrupt structure
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* @endpoint_id: Endpoint whose interrupt should be enabled
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*
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* Note: The "TX" in the name is from the perspective of the IPA hardware.
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* A TX_SUSPEND interrupt arrives on an AP RX enpoint when packet data can't
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* be delivered to the endpoint because it is suspended (or its underlying
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* channel is stopped).
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*/
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void ipa_interrupt_suspend_enable(struct ipa_interrupt *interrupt,
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u32 endpoint_id);
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/**
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* ipa_interrupt_suspend_disable - Disable TX_SUSPEND for an endpoint
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* @interrupt: IPA interrupt structure
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* @endpoint_id: Endpoint whose interrupt should be disabled
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*/
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void ipa_interrupt_suspend_disable(struct ipa_interrupt *interrupt,
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u32 endpoint_id);
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/**
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* ipa_interrupt_suspend_clear_all - clear all suspend interrupts
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* @interrupt: IPA interrupt structure
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*
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* Clear the TX_SUSPEND interrupt for all endpoints that signaled it.
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*/
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void ipa_interrupt_suspend_clear_all(struct ipa_interrupt *interrupt);
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/**
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* ipa_interrupt_simulate_suspend() - Simulate TX_SUSPEND IPA interrupt
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* @interrupt: IPA interrupt structure
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*
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* This calls the TX_SUSPEND interrupt handler, as if such an interrupt
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* had been signaled. This is needed to work around a hardware quirk
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* that occurs if aggregation is active on an endpoint when its underlying
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* channel is suspended.
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*/
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void ipa_interrupt_simulate_suspend(struct ipa_interrupt *interrupt);
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/**
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* ipa_interrupt_enable() - Enable an IPA interrupt type
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* @ipa: IPA pointer
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* @ipa_irq: IPA interrupt ID
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*/
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void ipa_interrupt_enable(struct ipa *ipa, enum ipa_irq_id ipa_irq);
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/**
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* ipa_interrupt_disable() - Disable an IPA interrupt type
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* @ipa: IPA pointer
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* @ipa_irq: IPA interrupt ID
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*/
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void ipa_interrupt_disable(struct ipa *ipa, enum ipa_irq_id ipa_irq);
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/**
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* ipa_interrupt_irq_enable() - Enable IPA interrupts
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* @ipa: IPA pointer
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*
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* This enables the IPA interrupt line
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*/
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void ipa_interrupt_irq_enable(struct ipa *ipa);
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/**
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* ipa_interrupt_irq_disable() - Disable IPA interrupts
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* @ipa: IPA pointer
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*
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* This disables the IPA interrupt line
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*/
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void ipa_interrupt_irq_disable(struct ipa *ipa);
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/**
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* ipa_interrupt_config() - Configure the IPA interrupt framework
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* @ipa: IPA pointer
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*
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* Return: Pointer to IPA SMP2P info, or a pointer-coded error
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*/
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struct ipa_interrupt *ipa_interrupt_config(struct ipa *ipa);
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/**
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* ipa_interrupt_deconfig() - Inverse of ipa_interrupt_config()
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* @interrupt: IPA interrupt structure
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*/
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void ipa_interrupt_deconfig(struct ipa_interrupt *interrupt);
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#endif /* _IPA_INTERRUPT_H_ */
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