119 lines
3.5 KiB
C
119 lines
3.5 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
|
||
|
|
/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
|
||
|
|
* Copyright (C) 2018-2020 Linaro Ltd.
|
||
|
|
*/
|
||
|
|
#ifndef _IPA_INTERRUPT_H_
|
||
|
|
#define _IPA_INTERRUPT_H_
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/bits.h>
|
||
|
|
|
||
|
|
struct ipa;
|
||
|
|
struct ipa_interrupt;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* typedef ipa_irq_handler_t - IPA interrupt handler function type
|
||
|
|
* @ipa: IPA pointer
|
||
|
|
* @irq_id: interrupt type
|
||
|
|
*
|
||
|
|
* Callback function registered by ipa_interrupt_add() to handle a specific
|
||
|
|
* IPA interrupt type
|
||
|
|
*/
|
||
|
|
typedef void (*ipa_irq_handler_t)(struct ipa *ipa, enum ipa_irq_id irq_id);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_interrupt_add() - Register a handler for an IPA interrupt type
|
||
|
|
* @interrupt: IPA interrupt structure
|
||
|
|
* @irq_id: IPA interrupt type
|
||
|
|
* @handler: Handler function for the interrupt
|
||
|
|
*
|
||
|
|
* Add a handler for an IPA interrupt and enable it. IPA interrupt
|
||
|
|
* handlers are run in threaded interrupt context, so are allowed to
|
||
|
|
* block.
|
||
|
|
*/
|
||
|
|
void ipa_interrupt_add(struct ipa_interrupt *interrupt, enum ipa_irq_id irq_id,
|
||
|
|
ipa_irq_handler_t handler);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_interrupt_remove() - Remove the handler for an IPA interrupt type
|
||
|
|
* @interrupt: IPA interrupt structure
|
||
|
|
* @irq_id: IPA interrupt type
|
||
|
|
*
|
||
|
|
* Remove an IPA interrupt handler and disable it.
|
||
|
|
*/
|
||
|
|
void ipa_interrupt_remove(struct ipa_interrupt *interrupt,
|
||
|
|
enum ipa_irq_id irq_id);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_interrupt_suspend_enable - Enable TX_SUSPEND for an endpoint
|
||
|
|
* @interrupt: IPA interrupt structure
|
||
|
|
* @endpoint_id: Endpoint whose interrupt should be enabled
|
||
|
|
*
|
||
|
|
* Note: The "TX" in the name is from the perspective of the IPA hardware.
|
||
|
|
* A TX_SUSPEND interrupt arrives on an AP RX enpoint when packet data can't
|
||
|
|
* be delivered to the endpoint because it is suspended (or its underlying
|
||
|
|
* channel is stopped).
|
||
|
|
*/
|
||
|
|
void ipa_interrupt_suspend_enable(struct ipa_interrupt *interrupt,
|
||
|
|
u32 endpoint_id);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_interrupt_suspend_disable - Disable TX_SUSPEND for an endpoint
|
||
|
|
* @interrupt: IPA interrupt structure
|
||
|
|
* @endpoint_id: Endpoint whose interrupt should be disabled
|
||
|
|
*/
|
||
|
|
void ipa_interrupt_suspend_disable(struct ipa_interrupt *interrupt,
|
||
|
|
u32 endpoint_id);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_interrupt_suspend_clear_all - clear all suspend interrupts
|
||
|
|
* @interrupt: IPA interrupt structure
|
||
|
|
*
|
||
|
|
* Clear the TX_SUSPEND interrupt for all endpoints that signaled it.
|
||
|
|
*/
|
||
|
|
void ipa_interrupt_suspend_clear_all(struct ipa_interrupt *interrupt);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_interrupt_simulate_suspend() - Simulate TX_SUSPEND IPA interrupt
|
||
|
|
* @interrupt: IPA interrupt structure
|
||
|
|
*
|
||
|
|
* This calls the TX_SUSPEND interrupt handler, as if such an interrupt
|
||
|
|
* had been signaled. This is needed to work around a hardware quirk
|
||
|
|
* that occurs if aggregation is active on an endpoint when its underlying
|
||
|
|
* channel is suspended.
|
||
|
|
*/
|
||
|
|
void ipa_interrupt_simulate_suspend(struct ipa_interrupt *interrupt);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_interrupt_irq_enable() - Enable IPA interrupts
|
||
|
|
* @ipa: IPA pointer
|
||
|
|
*
|
||
|
|
* This enables the IPA interrupt line
|
||
|
|
*/
|
||
|
|
void ipa_interrupt_irq_enable(struct ipa *ipa);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_interrupt_irq_disable() - Disable IPA interrupts
|
||
|
|
* @ipa: IPA pointer
|
||
|
|
*
|
||
|
|
* This disables the IPA interrupt line
|
||
|
|
*/
|
||
|
|
void ipa_interrupt_irq_disable(struct ipa *ipa);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_interrupt_config() - Configure the IPA interrupt framework
|
||
|
|
* @ipa: IPA pointer
|
||
|
|
*
|
||
|
|
* Return: Pointer to IPA SMP2P info, or a pointer-coded error
|
||
|
|
*/
|
||
|
|
struct ipa_interrupt *ipa_interrupt_config(struct ipa *ipa);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_interrupt_deconfig() - Inverse of ipa_interrupt_config()
|
||
|
|
* @interrupt: IPA interrupt structure
|
||
|
|
*/
|
||
|
|
void ipa_interrupt_deconfig(struct ipa_interrupt *interrupt);
|
||
|
|
|
||
|
|
#endif /* _IPA_INTERRUPT_H_ */
|