/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 *
 * (C) COPYRIGHT 2012-2016, 2018, 2020-2022 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.
 *
 */

#ifndef _KBASE_DEBUG_JOB_FAULT_H
#define _KBASE_DEBUG_JOB_FAULT_H

#include <linux/debugfs.h>
#include <linux/seq_file.h>

#define REGISTER_DUMP_TERMINATION_FLAG 0xFFFFFFFF

/**
 * kbase_debug_job_fault_dev_init - Create the fault event wait queue
 *		per device and initialize the required lists.
 * @kbdev:	Device pointer
 *
 * Return: Zero on success or a negative error code.
 */
int kbase_debug_job_fault_dev_init(struct kbase_device *kbdev);

/**
 * kbase_debug_job_fault_debugfs_init - Initialize job fault debug sysfs
 * @kbdev:	Device pointer
 */
void kbase_debug_job_fault_debugfs_init(struct kbase_device *kbdev);

/**
 * kbase_debug_job_fault_dev_term - Clean up resources created in
 *		kbase_debug_job_fault_dev_init.
 * @kbdev:	Device pointer
 */
void kbase_debug_job_fault_dev_term(struct kbase_device *kbdev);

/**
 * kbase_debug_job_fault_context_init - Initialize the relevant
 *		data structure per context
 * @kctx: KBase context pointer
 * Return: 0 on success
 */
int kbase_debug_job_fault_context_init(struct kbase_context *kctx);

/**
 * kbase_debug_job_fault_context_term - Release the relevant
 *		resource per context
 * @kctx: KBase context pointer
 */
void kbase_debug_job_fault_context_term(struct kbase_context *kctx);

/**
 * kbase_debug_job_fault_kctx_unblock - Unblock the atoms blocked on job fault
 *					dumping on context termination.
 *
 * @kctx: KBase context pointer
 *
 * This function is called during context termination to unblock the atom for
 * which the job fault occurred and also the atoms following it. This is needed
 * otherwise the wait for zero jobs could timeout (leading to an assertion
 * failure, kernel panic in debug builds) in the pathological case where
 * although the thread/daemon capturing the job fault events is running,
 * but for some reasons has stopped consuming the events.
 */
void kbase_debug_job_fault_kctx_unblock(struct kbase_context *kctx);

/**
 * kbase_debug_job_fault_process - Process the failed job.
 *
 * @katom: The failed atom pointer
 * @completion_code: the job status
 *
 * It will send a event and wake up the job fault waiting queue
 * Then create a work queue to wait for job dump finish
 * This function should be called in the interrupt handler and before
 * jd_done that make sure the jd_done_worker will be delayed until the
 * job dump finish
 *
 * Return: true if dump is going on
 */
bool kbase_debug_job_fault_process(struct kbase_jd_atom *katom,
		u32 completion_code);

/**
 * kbase_debug_job_fault_reg_snapshot_init - Set the interested registers
 *      address during the job fault process, the relevant registers will
 *      be saved when a job fault happen
 * @kctx: KBase context pointer
 * @reg_range: Maximum register address space
 *
 * Return: true if initializing successfully
 */
bool kbase_debug_job_fault_reg_snapshot_init(struct kbase_context *kctx,
		int reg_range);

/**
 * kbase_job_fault_get_reg_snapshot - Read the interested registers for
 *      failed job dump
 *
 * @kctx: KBase context pointer
 *
 * Return: true if getting registers successfully
 */
bool kbase_job_fault_get_reg_snapshot(struct kbase_context *kctx);

#endif  /*_KBASE_DEBUG_JOB_FAULT_H*/