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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
*
* (C) COPYRIGHT 2014-2023 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
*/
/*
* Backend specific IRQ APIs
*/
#ifndef _KBASE_IRQ_INTERNAL_H_
#define _KBASE_IRQ_INTERNAL_H_
/* GPU IRQ Tags */
#define JOB_IRQ_TAG 0
#define MMU_IRQ_TAG 1
#define GPU_IRQ_TAG 2
/**
* kbase_install_interrupts - Install IRQs handlers.
*
* @kbdev: The kbase device
*
* This function must be called once only when a kbase device is initialized.
*
* Return: 0 on success. Error code (negative) on failure.
*/
int kbase_install_interrupts(struct kbase_device *kbdev);
/**
* kbase_release_interrupts - Uninstall IRQs handlers.
*
* @kbdev: The kbase device
*
* This function needs to be called when a kbase device is terminated.
*/
void kbase_release_interrupts(struct kbase_device *kbdev);
/**
* kbase_synchronize_irqs - Ensure that all IRQ handlers have completed
* execution
* @kbdev: The kbase device
*/
void kbase_synchronize_irqs(struct kbase_device *kbdev);
#ifdef CONFIG_MALI_DEBUG
#if IS_ENABLED(CONFIG_MALI_REAL_HW)
/**
* kbase_validate_interrupts - Validate interrupts
*
* @kbdev: The kbase device
*
* This function will be called once when a kbase device is initialized
* to check whether interrupt handlers are configured appropriately.
* If interrupt numbers and/or flags defined in the device tree are
* incorrect, then the validation might fail.
* The whold device initialization will fail if it returns error code.
*
* Return: 0 on success. Error code (negative) on failure.
*/
int kbase_validate_interrupts(struct kbase_device *const kbdev);
#endif /* CONFIG_MALI_REAL_HW */
#endif /* CONFIG_MALI_DEBUG */
/**
* kbase_get_interrupt_handler - Return default interrupt handler
* @kbdev: Kbase device
* @irq_tag: Tag to choose the handler
*
* If single interrupt line is used the combined interrupt handler
* will be returned regardless of irq_tag. Otherwise the corresponding
* interrupt handler will be returned.
*
* Return: Interrupt handler corresponding to the tag. NULL on failure.
*/
irq_handler_t kbase_get_interrupt_handler(struct kbase_device *kbdev, u32 irq_tag);
/**
* kbase_set_custom_irq_handler - Set a custom IRQ handler
*
* @kbdev: The kbase device for which the handler is to be registered
* @custom_handler: Handler to be registered
* @irq_tag: Interrupt tag
*
* Register given interrupt handler for requested interrupt tag
* In the case where irq handler is not specified, the default handler shall be
* registered
*
* Return: 0 case success, error code otherwise
*/
int kbase_set_custom_irq_handler(struct kbase_device *kbdev, irq_handler_t custom_handler,
u32 irq_tag);
#endif /* _KBASE_IRQ_INTERNAL_H_ */
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