hal/os/linux/kernel/gc_hal_kernel_sync.h

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*    Copyright (C) 2014 - 2020 Vivante Corporation
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#ifndef __gc_hal_kernel_sync_h_
#define __gc_hal_kernel_sync_h_

#include <linux/types.h>

#ifndef CONFIG_SYNC_FILE

/* sync.h is in drivers/staging/android/ for now. */
#include <sync.h>

#include <gc_hal.h>
#include <gc_hal_base.h>

struct viv_sync_timeline
{
    /* Parent object. */
    struct sync_timeline obj;

    /* Timestamp when sync_pt is created. */
    gctUINT64 stamp;

    /* Pointer to os struct. */
    gckOS os;
};


struct viv_sync_pt
{
    /* Parent object. */
    struct sync_pt pt;

    /* Reference signal. */
    gctSIGNAL signal;

    /* Timestamp when sync_pt is created. */
    gctUINT64 stamp;
};

/* Create viv_sync_timeline object. */
struct viv_sync_timeline * viv_sync_timeline_create(const char *name, gckOS Os);

/* Create viv_sync_pt object. */
struct sync_pt * viv_sync_pt_create(struct viv_sync_timeline *obj,
                        gctSIGNAL signal);

#else

#include <linux/sync_file.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,10,0)
#  include <linux/fence.h>
#  include <linux/fence-array.h>
#else
#  include <linux/dma-fence.h>
#  include <linux/dma-fence-array.h>
#endif

#include <gc_hal.h>
#include <gc_hal_base.h>
#include "gc_hal_kernel_linux.h"

struct viv_sync_timeline
{
    char name[64];

    /* Parent object. */
    u64 context;

    /* Timestamp when sync_pt is created. */
    atomic64_t seqno;

    /* Pointer to os struct. */
    gckOS os;
};

struct viv_fence
{
    /* must be the first. */
    struct dma_fence base;
    spinlock_t lock;

    struct viv_sync_timeline *parent;

    /* link with signal. */
    gctSIGNAL signal;
};

struct viv_sync_timeline * viv_sync_timeline_create(const char *name, gckOS Os);

void viv_sync_timeline_destroy(struct viv_sync_timeline *timeline);

struct dma_fence * viv_fence_create(struct viv_sync_timeline *timeline,
                    gcsSIGNAL *signal);

#endif

#endif /* __gc_hal_kernel_sync_h_ */