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      1 /*
      2  * Copyright (c) 2012-2015 Etnaviv Project
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sub license,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the
     12  * next paragraph) shall be included in all copies or substantial portions
     13  * of the Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     21  * DEALINGS IN THE SOFTWARE.
     22  *
     23  * Authors:
     24  *    Wladimir J. van der Laan <laanwj (at) gmail.com>
     25  *    Rob Clark <robclark (at) freedesktop.org>
     26  */
     27 
     28 #include "etnaviv_fence.h"
     29 #include "etnaviv_context.h"
     30 #include "etnaviv_screen.h"
     31 
     32 #include "util/u_inlines.h"
     33 #include "util/u_memory.h"
     34 
     35 struct pipe_fence_handle {
     36    struct pipe_reference reference;
     37    struct etna_context *ctx;
     38    struct etna_screen *screen;
     39    uint32_t timestamp;
     40 };
     41 
     42 static void
     43 etna_screen_fence_reference(struct pipe_screen *pscreen,
     44                             struct pipe_fence_handle **ptr,
     45                             struct pipe_fence_handle *fence)
     46 {
     47    if (pipe_reference(&(*ptr)->reference, &fence->reference))
     48       FREE(*ptr);
     49 
     50    *ptr = fence;
     51 }
     52 
     53 static boolean
     54 etna_screen_fence_finish(struct pipe_screen *pscreen, struct pipe_context *ctx,
     55                          struct pipe_fence_handle *fence, uint64_t timeout)
     56 {
     57    if (etna_pipe_wait_ns(fence->screen->pipe, fence->timestamp, timeout))
     58       return false;
     59 
     60    return true;
     61 }
     62 
     63 struct pipe_fence_handle *
     64 etna_fence_create(struct pipe_context *pctx)
     65 {
     66    struct pipe_fence_handle *fence;
     67    struct etna_context *ctx = etna_context(pctx);
     68 
     69    fence = CALLOC_STRUCT(pipe_fence_handle);
     70    if (!fence)
     71       return NULL;
     72 
     73    pipe_reference_init(&fence->reference, 1);
     74 
     75    fence->ctx = ctx;
     76    fence->screen = ctx->screen;
     77    fence->timestamp = etna_cmd_stream_timestamp(ctx->stream);
     78 
     79    return fence;
     80 }
     81 
     82 void
     83 etna_fence_screen_init(struct pipe_screen *pscreen)
     84 {
     85    pscreen->fence_reference = etna_screen_fence_reference;
     86    pscreen->fence_finish = etna_screen_fence_finish;
     87 }
     88