nouveau: Support semaphores

Signed-off-by: Yusuf Khan <yusisamerican@gmail.com>

src/gallium/drivers/nouveau/nouveau_fence.c

@@ -202,6 +202,16 @@ _nouveau_fence_signalled(struct nouveau_fence *fence)
    return fence->state == NOUVEAU_FENCE_STATE_SIGNALLED;
 }
 
+void
+nouveau_fence_server_signal(struct pipe_context *pipe,
+                            struct pipe_fence_handle *fence)
+{
+   struct nouveau_fence *nvfence = (struct nouveau_fence *)fence;
+
+   if (nvfence)
+      nouveau_fence_signalled(nvfence);
+}
+
 static bool
 nouveau_fence_kick(struct nouveau_fence *fence)
 {
@@ -389,3 +399,14 @@ nouveau_fence_signalled(struct nouveau_fence *fence)
    simple_mtx_unlock(&fence->screen->fence.lock);
    return ret;
 }
+
+void
+nouveau_fence_server_sync(struct pipe_context *pipe,
+                          struct pipe_fence_handle *fence)
+{
+   struct nouveau_context *ctx = nouveau_context(pipe);
+   struct nouveau_fence *nvfence = (struct nouveau_fence *)fence;
+
+   if (nvfence)
+      nouveau_fence_wait(nvfence, &ctx->debug);
+}

src/gallium/drivers/nouveau/nouveau_fence.h

@@ -67,6 +67,8 @@ void nouveau_fence_next(struct nouveau_context *);
 bool nouveau_fence_wait(struct nouveau_fence *, struct util_debug_callback *);
 bool nouveau_fence_signalled(struct nouveau_fence *);
 void nouveau_fence_ref(struct nouveau_fence *, struct nouveau_fence **);
+void nouveau_fence_server_sync(struct pipe_context *pipe, struct pipe_fence_handle *fence);
+void nouveau_fence_server_signal(struct pipe_context *pipe, struct pipe_fence_handle *fence);
 
 void nouveau_fence_unref_bo(void *data); /* generic unref bo callback */
 

src/gallium/drivers/nouveau/nv30/nv30_context.c

@@ -199,6 +199,7 @@ nv30_context_create(struct pipe_screen *pscreen, void *priv, unsigned ctxflags)
    pipe->priv = priv;
    pipe->destroy = nv30_context_destroy;
    pipe->flush = nv30_context_flush;
+   /* XXX: Is this fine? pipe->fence_server_sync = nouveau_fence_server_sync; */
 
    if (nouveau_context_init(&nv30->base, &screen->base)) {
       nv30_context_destroy(pipe);

src/gallium/drivers/nouveau/nv50/nv50_context.c

@@ -344,6 +344,8 @@ nv50_create(struct pipe_screen *pscreen, void *priv, unsigned ctxflags)
    pipe->launch_grid = nv50_launch_grid;
 
    pipe->flush = nv50_flush;
+   pipe->fence_server_sync = nouveau_fence_server_sync;
+   pipe->fence_server_signal = nouveau_fence_server_signal;
    pipe->texture_barrier = nv50_texture_barrier;
    pipe->memory_barrier = nv50_memory_barrier;
    pipe->get_sample_position = nv50_context_get_sample_position;

src/gallium/drivers/nouveau/nv50/nv50_screen.c

@@ -231,6 +231,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TEXTURE_MULTISAMPLE:
    case PIPE_CAP_FS_FINE_DERIVATIVE:
    case PIPE_CAP_SAMPLER_VIEW_TARGET:
+   case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
    case PIPE_CAP_CLIP_HALFZ:
    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
@@ -354,7 +355,6 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
-   case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
    case PIPE_CAP_PACKED_UNIFORMS:
    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:

src/gallium/drivers/nouveau/nvc0/nvc0_context.c

@@ -457,6 +457,8 @@ nvc0_create(struct pipe_screen *pscreen, void *priv, unsigned ctxflags)
    pipe->svm_migrate = nvc0_svm_migrate;
 
    pipe->flush = nvc0_flush;
+   pipe->fence_server_sync = nouveau_fence_server_sync;
+   pipe->fence_server_signal = nouveau_fence_server_signal;
    pipe->texture_barrier = nvc0_texture_barrier;
    pipe->memory_barrier = nvc0_memory_barrier;
    pipe->get_sample_position = nvc0_context_get_sample_position;

src/gallium/drivers/nouveau/nvc0/nvc0_screen.c

@@ -254,6 +254,7 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_START_INSTANCE:
    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
    case PIPE_CAP_DRAW_INDIRECT:
+   case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_USER_VERTEX_BUFFERS:
    case PIPE_CAP_TEXTURE_QUERY_LOD:
    case PIPE_CAP_SAMPLE_SHADING:
@@ -390,7 +391,6 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
-   case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
    case PIPE_CAP_PACKED_UNIFORMS:
    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES: