broadcom/vc4: Store job fence in syncobj

This gives us access to the fence created for the render job.

v2: Drop flag (Eric)

Signed-off-by: Stefan Schake <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>

1 files changed, 23 insertions, 1 deletions

diff --git a/src/gallium/drivers/vc4/vc4_job.c b/src/gallium/drivers/vc4/vc4_job.c
index 41c274ca1b3..3b0ba8b69cf 100644
--- a/src/gallium/drivers/vc4/vc4_job.c
+++ b/src/gallium/drivers/vc4/vc4_job.c
@@ -477,6 +477,9 @@ vc4_job_submit(struct vc4_context *vc4, struct vc4_job *job)
         }
         submit.flags |= job->flags;
 
+        if (vc4->screen->has_syncobj)
+                submit.out_sync = vc4->job_syncobj;
+
         if (!(vc4_debug & VC4_DEBUG_NORAST)) {
                 int ret;
 
@@ -530,7 +533,7 @@ vc4_job_hash(const void *key)
         return _mesa_hash_data(key, sizeof(struct vc4_job_key));
 }
 
-void
+int
 vc4_job_init(struct vc4_context *vc4)
 {
         vc4->jobs = _mesa_hash_table_create(vc4,
@@ -539,5 +542,24 @@ vc4_job_init(struct vc4_context *vc4)
         vc4->write_jobs = _mesa_hash_table_create(vc4,
                                                   _mesa_hash_pointer,
                                                   _mesa_key_pointer_equal);
+
+        if (vc4->screen->has_syncobj) {
+                /* Create the syncobj as signaled since with no job executed
+                 * there is nothing to wait on.
+                 */
+                int ret = drmSyncobjCreate(vc4->fd,
+                                           DRM_SYNCOBJ_CREATE_SIGNALED,
+                                           &vc4->job_syncobj);
+                if (ret) {
+                        /* If the screen indicated syncobj support, we should
+                         * be able to create a signaled syncobj.
+                         * At this point it is too late to pretend the screen
+                         * has no syncobj support.
+                         */
+                        return ret;
+                }
+        }
+
+        return 0;
 }