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Viewing changes to src/gallium/drivers/lima/lima_fence.c

  • Committer: mmach
  • Date: 2022-09-22 19:56:13 UTC
  • Revision ID: netbit73@gmail.com-20220922195613-wtik9mmy20tmor0i
2022-09-22 21:17:09

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src/gallium/drivers/lima/lima_fence.c
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/*
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 * Copyright (c) 2018-2019 Lima Project
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sub license,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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 * DEALINGS IN THE SOFTWARE.
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 *
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 */
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#include <fcntl.h>
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#include <libsync.h>
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#include "util/os_file.h"
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#include <util/u_memory.h>
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#include <util/u_inlines.h>
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#include "drm-uapi/lima_drm.h"
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#include "lima_screen.h"
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#include "lima_context.h"
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#include "lima_fence.h"
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#include "lima_job.h"
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struct pipe_fence_handle {
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   struct pipe_reference reference;
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   int fd;
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};
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static void
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lima_create_fence_fd(struct pipe_context *pctx,
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                     struct pipe_fence_handle **fence,
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                     int fd, enum pipe_fd_type type)
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{
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   assert(type == PIPE_FD_TYPE_NATIVE_SYNC);
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   *fence = lima_fence_create(os_dupfd_cloexec(fd));
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}
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static void
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lima_fence_server_sync(struct pipe_context *pctx,
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                       struct pipe_fence_handle *fence)
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{
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   struct lima_context *ctx = lima_context(pctx);
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   sync_accumulate("lima", &ctx->in_sync_fd, fence->fd);
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}
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void lima_fence_context_init(struct lima_context *ctx)
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{
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   ctx->base.create_fence_fd = lima_create_fence_fd;
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   ctx->base.fence_server_sync = lima_fence_server_sync;
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}
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struct pipe_fence_handle *
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lima_fence_create(int fd)
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{
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   struct pipe_fence_handle *fence;
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   fence = CALLOC_STRUCT(pipe_fence_handle);
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   if (!fence)
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      return NULL;
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   pipe_reference_init(&fence->reference, 1);
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   fence->fd = fd;
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   return fence;
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}
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static int
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lima_fence_get_fd(struct pipe_screen *pscreen,
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                  struct pipe_fence_handle *fence)
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{
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   return os_dupfd_cloexec(fence->fd);
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}
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static void
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lima_fence_destroy(struct pipe_fence_handle *fence)
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{
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   if (fence->fd >= 0)
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      close(fence->fd);
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   FREE(fence);
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}
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static void
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lima_fence_reference(struct pipe_screen *pscreen,
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                     struct pipe_fence_handle **ptr,
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                     struct pipe_fence_handle *fence)
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{
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   if (pipe_reference(&(*ptr)->reference, &fence->reference))
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      lima_fence_destroy(*ptr);
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   *ptr = fence;
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}
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static bool
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lima_fence_finish(struct pipe_screen *pscreen, struct pipe_context *pctx,
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                  struct pipe_fence_handle *fence, uint64_t timeout)
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{
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   return !sync_wait(fence->fd, timeout / 1000000);
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}
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void
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lima_fence_screen_init(struct lima_screen *screen)
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{
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   screen->base.fence_reference = lima_fence_reference;
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   screen->base.fence_finish = lima_fence_finish;
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   screen->base.fence_get_fd = lima_fence_get_fd;
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}