linux-imx

/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Tegra host1x Syncpoints

 *

 * Copyright (c) 2010-2013, NVIDIA Corporation.

 */

​

#ifndef __HOST1X_SYNCPT_H

#define __HOST1X_SYNCPT_H

​

#include <linux/atomic.h>

#include <linux/host1x.h>

#include <linux/kernel.h>

#include <linux/sched.h>

​

#include "intr.h"

​

struct host1x;

​

/* Reserved for replacing an expired wait with a NOP */

#define HOST1X_SYNCPT_RESERVED          0

​

struct host1x_syncpt_base {

    unsigned int id;

    bool requested;

};

​

struct host1x_syncpt {

    unsigned int id;

    atomic_t min_val;

    atomic_t max_val;

    u32 base_val;

    const char *name;

    bool client_managed;

    struct host1x *host;

    struct host1x_client *client;

    struct host1x_syncpt_base *base;

​

    /* interrupt data */

    struct host1x_syncpt_intr intr;

};

​

/* Initialize sync point array  */

int host1x_syncpt_init(struct host1x *host);

​

/*  Free sync point array */

void host1x_syncpt_deinit(struct host1x *host);

​

/* Return number of sync point supported. */

unsigned int host1x_syncpt_nb_pts(struct host1x *host);

​

/* Return number of wait bases supported. */

unsigned int host1x_syncpt_nb_bases(struct host1x *host);

​

/* Return number of mlocks supported. */

unsigned int host1x_syncpt_nb_mlocks(struct host1x *host);

​

/*

 * Check sync point sanity. If max is larger than min, there have too many

 * sync point increments.

 *

 * Client managed sync point are not tracked.

 * */