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      1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
      2 
      3 /*
      4  * Copyright (C) 2012 Rob Clark <robclark (at) freedesktop.org>
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice (including the next
     14  * paragraph) shall be included in all copies or substantial portions of the
     15  * Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     23  * SOFTWARE.
     24  *
     25  * Authors:
     26  *    Rob Clark <robclark (at) freedesktop.org>
     27  */
     28 
     29 #include <libsync.h>
     30 
     31 #include "util/u_inlines.h"
     32 
     33 #include "freedreno_fence.h"
     34 #include "freedreno_context.h"
     35 #include "freedreno_util.h"
     36 
     37 struct pipe_fence_handle {
     38 	struct pipe_reference reference;
     39 	struct fd_context *ctx;
     40 	struct fd_screen *screen;
     41 	int fence_fd;
     42 	uint32_t timestamp;
     43 };
     44 
     45 static void fd_fence_destroy(struct pipe_fence_handle *fence)
     46 {
     47 	if (fence->fence_fd != -1)
     48 		close(fence->fence_fd);
     49 	FREE(fence);
     50 }
     51 
     52 void fd_fence_ref(struct pipe_screen *pscreen,
     53 		struct pipe_fence_handle **ptr,
     54 		struct pipe_fence_handle *pfence)
     55 {
     56 	if (pipe_reference(&(*ptr)->reference, &pfence->reference))
     57 		fd_fence_destroy(*ptr);
     58 
     59 	*ptr = pfence;
     60 }
     61 
     62 boolean fd_fence_finish(struct pipe_screen *pscreen,
     63 		struct pipe_context *ctx,
     64 		struct pipe_fence_handle *fence,
     65 		uint64_t timeout)
     66 {
     67 	if (fence->fence_fd != -1) {
     68 		int ret = sync_wait(fence->fence_fd, timeout / 1000000);
     69 		return ret == 0;
     70 	}
     71 
     72 	if (fd_pipe_wait_timeout(fence->screen->pipe, fence->timestamp, timeout))
     73 		return false;
     74 
     75 	return true;
     76 }
     77 
     78 void fd_create_fence_fd(struct pipe_context *pctx,
     79 		struct pipe_fence_handle **pfence, int fd)
     80 {
     81 	*pfence = fd_fence_create(fd_context(pctx), 0, dup(fd));
     82 }
     83 
     84 void fd_fence_server_sync(struct pipe_context *pctx,
     85 		struct pipe_fence_handle *fence)
     86 {
     87 	struct fd_context *ctx = fd_context(pctx);
     88 	struct fd_batch *batch = ctx->batch;
     89 
     90 	if (sync_accumulate("freedreno", &batch->in_fence_fd, fence->fence_fd)) {
     91 		/* error */
     92 	}
     93 }
     94 
     95 int fd_fence_get_fd(struct pipe_screen *pscreen,
     96 		struct pipe_fence_handle *fence)
     97 {
     98 	return dup(fence->fence_fd);
     99 }
    100 
    101 struct pipe_fence_handle * fd_fence_create(struct fd_context *ctx,
    102 		uint32_t timestamp, int fence_fd)
    103 {
    104 	struct pipe_fence_handle *fence;
    105 
    106 	fence = CALLOC_STRUCT(pipe_fence_handle);
    107 	if (!fence)
    108 		return NULL;
    109 
    110 	pipe_reference_init(&fence->reference, 1);
    111 
    112 	fence->ctx = ctx;
    113 	fence->screen = ctx->screen;
    114 	fence->timestamp = timestamp;
    115 	fence->fence_fd = fence_fd;
    116 
    117 	return fence;
    118 }
    119