// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: Copyright (c) 2024-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#ifndef __HOST1X_EMU_POLL_H
#define __HOST1X_EMU_POLL_H

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/timekeeping.h>

#ifdef HOST1X_EMU_HRTIMER_FENCE_SCAN
#define HRTIMER_TIMEOUT_NSEC		200000U     /*200usec*/
#define HRTIMER_TIMEOUT_SEC         0U          /*0sec*/
#endif /*HOST1X_EMU_HRTIMER_FENCE_SCAN*/

struct host1x;
struct host1x_syncpt;
struct host1x_syncpt_fence;

struct host1x_fence_list {
    spinlock_t              lock;
    struct list_head        list;
};

struct host1x_syncpt_list {
    spinlock_t              lock;
    struct list_head        list;
};

/**
 * Description: Initialize host1x syncpoint and pool for polling
 * 
 */
int host1x_poll_init(struct host1x *host);

/**
 * Description: Deinitialize host1x syncpoint and pool for polling
 */
void host1x_poll_deinit(struct host1x *host);

/**
 * Description: Enable host1x syncpoint pool polling
 */
void host1x_poll_start(struct host1x *host);

/**
 * Description: Disable host1x syncpoint pool polling
 */
void host1x_poll_stop(struct host1x *host);

/**
 * Description: Polling Thread Handler
 */
void host1x_poll_handle_timeout(struct host1x *host, unsigned int id, ktime_t ts);

/**
 * Description: Add fence to syncpoint object fence-list
 */
void host1x_poll_add_fence_locked(struct host1x *host, struct host1x_syncpt_fence *fence);

/**
 * Description: Remove fence from syncpoint object fence-list
 */
bool host1x_poll_remove_fence(struct host1x *host, struct host1x_syncpt_fence *fence);

/**
 * Description: Check if syncpoint fence expired
 */
void host1x_poll_irq_check_syncpt_fence(struct host1x_syncpt  *sp);
#endif