icd/intel/fence.c

/*
 * XGL
 *
 * Copyright (C) 2014 LunarG, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *   Chia-I Wu <olv@lunarg.com>
 */

#include "kmd/winsys.h"
#include "cmd.h"
#include "dev.h"
#include "fence.h"

static void fence_destroy(struct intel_obj *obj)
{
    struct intel_fence *fence = intel_fence_from_obj(obj);

    intel_fence_destroy(fence);
}

XGL_RESULT intel_fence_create(struct intel_dev *dev,
                              const XGL_FENCE_CREATE_INFO *info,
                              struct intel_fence **fence_ret)
{
    struct intel_fence *fence;

    fence = (struct intel_fence *) intel_base_create(dev, sizeof(*fence),
            dev->base.dbg, XGL_DBG_OBJECT_FENCE, info, 0);
    if (!fence)
        return XGL_ERROR_OUT_OF_MEMORY;

    fence->obj.destroy = fence_destroy;

    *fence_ret = fence;

    return XGL_SUCCESS;
}

void intel_fence_destroy(struct intel_fence *fence)
{
    intel_base_destroy(&fence->obj.base);
}

XGL_RESULT intel_fence_get_status(struct intel_fence *fence)
{
    struct intel_bo *bo = (fence->cmd) ?
        intel_cmd_get_batch(fence->cmd, NULL) : NULL;

    if (!bo)
        return XGL_ERROR_UNAVAILABLE;

    return (intel_bo_is_busy(bo)) ? XGL_NOT_READY : XGL_SUCCESS;
}

XGL_RESULT intel_fence_wait(struct intel_fence *fence, int64_t timeout_ns)
{
    struct intel_bo *bo = (fence->cmd) ?
        intel_cmd_get_batch(fence->cmd, NULL) : NULL;
    int err;

    if (!bo)
        return XGL_ERROR_UNAVAILABLE;

    err = intel_bo_wait(bo, timeout_ns);

    return (err) ? XGL_NOT_READY : XGL_SUCCESS;
}

XGL_RESULT XGLAPI intelCreateFence(
    XGL_DEVICE                                  device,
    const XGL_FENCE_CREATE_INFO*                pCreateInfo,
    XGL_FENCE*                                  pFence)
{
    struct intel_dev *dev = intel_dev(device);

    return intel_fence_create(dev, pCreateInfo,
            (struct intel_fence **) pFence);
}

XGL_RESULT XGLAPI intelGetFenceStatus(
    XGL_FENCE                                   fence_)
{
    struct intel_fence *fence = intel_fence(fence_);

    return intel_fence_get_status(fence);
}

XGL_RESULT XGLAPI intelWaitForFences(
    XGL_DEVICE                                  device,
    XGL_UINT                                    fenceCount,
    const XGL_FENCE*                            pFences,
    XGL_BOOL                                    waitAll,
    XGL_UINT64                                  timeout)
{
    XGL_RESULT ret = XGL_SUCCESS;
    XGL_UINT i;

    for (i = 0; i < fenceCount; i++) {
        struct intel_fence *fence = intel_fence(pFences[i]);
        int64_t ns;
        XGL_RESULT r;

        if (timeout <= (XGL_UINT64) (INT64_MAX / 1000 / 1000 / 1000))
            ns = timeout * 1000 * 1000 * 1000;
        else
            ns = -1;

        r = intel_fence_wait(fence, ns);

        if (!waitAll && r == XGL_SUCCESS)
            return XGL_SUCCESS;

        if (r != XGL_SUCCESS)
            ret = r;
    }

    return ret;
}