1 files changed, 120 insertions, 0 deletions
diff --git a/src/gallium/drivers/lima/lima_fence.c b/src/gallium/drivers/lima/lima_fence.c
new file mode 100644
index 00000000000..50114c24c2b
--- /dev/null
+++ b/src/gallium/drivers/lima/lima_fence.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2018-2019 Lima Project
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. 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.
+ *
+ */
+
+#include <fcntl.h>
+#include <libsync.h>
+
+#include <util/u_memory.h>
+#include <util/u_inlines.h>
+
+#include "drm-uapi/lima_drm.h"
+
+#include "lima_screen.h"
+#include "lima_context.h"
+#include "lima_fence.h"
+#include "lima_submit.h"
+
+struct pipe_fence_handle {
+   struct pipe_reference reference;
+   int fd;
+};
+
+static void
+lima_create_fence_fd(struct pipe_context *pctx,
+                     struct pipe_fence_handle **fence,
+                     int fd, enum pipe_fd_type type)
+{
+   assert(type == PIPE_FD_TYPE_NATIVE_SYNC);
+   *fence = lima_fence_create(fcntl(fd, F_DUPFD_CLOEXEC, 3));
+}
+
+static void
+lima_fence_server_sync(struct pipe_context *pctx,
+                       struct pipe_fence_handle *fence)
+{
+   struct lima_context *ctx = lima_context(pctx);
+
+   lima_submit_add_in_sync(ctx->gp_submit, fence->fd);
+}
+
+void lima_fence_context_init(struct lima_context *ctx)
+{
+   ctx->base.create_fence_fd = lima_create_fence_fd;
+   ctx->base.fence_server_sync = lima_fence_server_sync;
+}
+
+struct pipe_fence_handle *
+lima_fence_create(int fd)
+{
+   struct pipe_fence_handle *fence;
+
+   fence = CALLOC_STRUCT(pipe_fence_handle);
+   if (!fence)
+      return NULL;
+
+   pipe_reference_init(&fence->reference, 1);
+   fence->fd = fd;
+
+   return fence;
+}
+
+static int
+lima_fence_get_fd(struct pipe_screen *pscreen,
+                  struct pipe_fence_handle *fence)
+{
+   return fcntl(fence->fd, F_DUPFD_CLOEXEC, 3);
+}
+
+static void
+lima_fence_destroy(struct pipe_fence_handle *fence)
+{
+   if (fence->fd >= 0)
+      close(fence->fd);
+   FREE(fence);
+}
+
+static void
+lima_fence_reference(struct pipe_screen *pscreen,
+                     struct pipe_fence_handle **ptr,
+                     struct pipe_fence_handle *fence)
+{
+   if (pipe_reference(&(*ptr)->reference, &fence->reference))
+      lima_fence_destroy(*ptr);
+   *ptr = fence;
+}
+
+static boolean
+lima_fence_finish(struct pipe_screen *pscreen, struct pipe_context *pctx,
+                  struct pipe_fence_handle *fence, uint64_t timeout)
+{
+   return !sync_wait(fence->fd, timeout / 1000000);
+}
+
+void
+lima_fence_screen_init(struct lima_screen *screen)
+{
+   screen->base.fence_reference = lima_fence_reference;
+   screen->base.fence_finish = lima_fence_finish;
+   screen->base.fence_get_fd = lima_fence_get_fd;
+}