gallium/radeon: create and return a fence in the flush function

All flush functions get a fence parameter. cs_create_fence is removed.

Reviewed-by: Christian König <christian.koenig@amd.com>

4 files changed, 36 insertions, 22 deletions

diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
index e6668930fa9..380316ebd69 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
@@ -405,7 +405,7 @@ static void *radeon_bo_map(struct radeon_winsys_cs_handle *buf,
                  *
                  * Only check whether the buffer is being used for write. */
                 if (cs && radeon_bo_is_referenced_by_cs_for_write(cs, bo)) {
-                    cs->flush_cs(cs->flush_data, RADEON_FLUSH_ASYNC);
+                    cs->flush_cs(cs->flush_data, RADEON_FLUSH_ASYNC, NULL);
                     return NULL;
                 }
 
@@ -415,7 +415,7 @@ static void *radeon_bo_map(struct radeon_winsys_cs_handle *buf,
                 }
             } else {
                 if (cs && radeon_bo_is_referenced_by_cs(cs, bo)) {
-                    cs->flush_cs(cs->flush_data, RADEON_FLUSH_ASYNC);
+                    cs->flush_cs(cs->flush_data, RADEON_FLUSH_ASYNC, NULL);
                     return NULL;
                 }
 
@@ -436,7 +436,7 @@ static void *radeon_bo_map(struct radeon_winsys_cs_handle *buf,
                  *
                  * Only check whether the buffer is being used for write. */
                 if (cs && radeon_bo_is_referenced_by_cs_for_write(cs, bo)) {
-                    cs->flush_cs(cs->flush_data, 0);
+                    cs->flush_cs(cs->flush_data, 0, NULL);
                 }
                 radeon_bo_wait((struct pb_buffer*)bo,
                                RADEON_USAGE_WRITE);
@@ -444,7 +444,7 @@ static void *radeon_bo_map(struct radeon_winsys_cs_handle *buf,
                 /* Mapping for write. */
                 if (cs) {
                     if (radeon_bo_is_referenced_by_cs(cs, bo)) {
-                        cs->flush_cs(cs->flush_data, 0);
+                        cs->flush_cs(cs->flush_data, 0, NULL);
                     } else {
                         /* Try to avoid busy-waiting in radeon_bo_wait. */
                         if (p_atomic_read(&bo->num_active_ioctls))
@@ -751,7 +751,7 @@ static void radeon_bo_set_tiling(struct pb_buffer *_buf,
     /* Tiling determines how DRM treats the buffer data.
      * We must flush CS when changing it if the buffer is referenced. */
     if (cs && radeon_bo_is_referenced_by_cs(cs, bo)) {
-        cs->flush_cs(cs->flush_data, 0);
+        cs->flush_cs(cs->flush_data, 0, NULL);
     }
 
     while (p_atomic_read(&bo->num_active_ioctls)) {
diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_cs.c b/src/gallium/winsys/radeon/drm/radeon_drm_cs.c
index 91db6b7f365..284a404c997 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_cs.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_cs.c
@@ -75,6 +75,11 @@
 
 #define RELOC_DWORDS (sizeof(struct drm_radeon_cs_reloc) / sizeof(uint32_t))
 
+static struct pipe_fence_handle *
+radeon_cs_create_fence(struct radeon_winsys_cs *rcs);
+static void radeon_fence_reference(struct pipe_fence_handle **dst,
+                                   struct pipe_fence_handle *src);
+
 static boolean radeon_init_cs_context(struct radeon_cs_context *csc,
                                       struct radeon_drm_winsys *ws)
 {
@@ -140,7 +145,8 @@ static void radeon_destroy_cs_context(struct radeon_cs_context *csc)
 static struct radeon_winsys_cs *
 radeon_drm_cs_create(struct radeon_winsys *rws,
                      enum ring_type ring_type,
-                     void (*flush)(void *ctx, unsigned flags),
+                     void (*flush)(void *ctx, unsigned flags,
+				   struct pipe_fence_handle **fence),
                      void *flush_ctx,
                      struct radeon_winsys_cs_handle *trace_buf)
 {
@@ -349,7 +355,7 @@ static boolean radeon_drm_cs_validate(struct radeon_winsys_cs *rcs)
 
         /* Flush if there are any relocs. Clean up otherwise. */
         if (cs->csc->crelocs) {
-            cs->flush_cs(cs->flush_data, RADEON_FLUSH_ASYNC);
+            cs->flush_cs(cs->flush_data, RADEON_FLUSH_ASYNC, NULL);
         } else {
             radeon_cs_context_cleanup(cs->csc);
 
@@ -417,7 +423,10 @@ void radeon_drm_cs_sync_flush(struct radeon_winsys_cs *rcs)
 
 DEBUG_GET_ONCE_BOOL_OPTION(noop, "RADEON_NOOP", FALSE)
 
-static void radeon_drm_cs_flush(struct radeon_winsys_cs *rcs, unsigned flags, uint32_t cs_trace_id)
+static void radeon_drm_cs_flush(struct radeon_winsys_cs *rcs,
+                                unsigned flags,
+                                struct pipe_fence_handle **fence,
+                                uint32_t cs_trace_id)
 {
     struct radeon_drm_cs *cs = radeon_drm_cs(rcs);
     struct radeon_cs_context *tmp;
@@ -457,9 +466,14 @@ static void radeon_drm_cs_flush(struct radeon_winsys_cs *rcs, unsigned flags, ui
        fprintf(stderr, "radeon: command stream overflowed\n");
     }
 
+    if (fence) {
+        radeon_fence_reference(fence, NULL);
+        *fence = radeon_cs_create_fence(rcs);
+    }
+
     radeon_drm_cs_sync_flush(rcs);
 
-    /* Flip command streams. */
+    /* Swap command streams. */
     tmp = cs->csc;
     cs->csc = cs->cst;
     cs->cst = tmp;
@@ -468,7 +482,9 @@ static void radeon_drm_cs_flush(struct radeon_winsys_cs *rcs, unsigned flags, ui
 
     /* If the CS is not empty or overflowed, emit it in a separate thread. */
     if (cs->base.cdw && cs->base.cdw <= RADEON_MAX_CMDBUF_DWORDS && !debug_get_option_noop()) {
-        unsigned i, crelocs = cs->cst->crelocs;
+        unsigned i, crelocs;
+
+        crelocs = cs->cst->crelocs;
 
         cs->cst->chunks[0].length_dw = cs->base.cdw;
 
@@ -643,7 +659,6 @@ void radeon_drm_cs_init_functions(struct radeon_drm_winsys *ws)
     ws->base.cs_flush = radeon_drm_cs_flush;
     ws->base.cs_is_buffer_referenced = radeon_bo_is_referenced;
     ws->base.cs_sync_flush = radeon_drm_cs_sync_flush;
-    ws->base.cs_create_fence = radeon_cs_create_fence;
     ws->base.fence_wait = radeon_fence_wait;
     ws->base.fence_reference = radeon_fence_reference;
 }
diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_cs.h b/src/gallium/winsys/radeon/drm/radeon_drm_cs.h
index 460e9fadc10..59819a56e0a 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_cs.h
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_cs.h
@@ -73,7 +73,7 @@ struct radeon_drm_cs {
     struct radeon_drm_winsys *ws;
 
     /* Flush CS. */
-    void (*flush_cs)(void *ctx, unsigned flags);
+    void (*flush_cs)(void *ctx, unsigned flags, struct pipe_fence_handle **fence);
     void *flush_data;
 
     pipe_semaphore flush_completed;
diff --git a/src/gallium/winsys/radeon/drm/radeon_winsys.h b/src/gallium/winsys/radeon/drm/radeon_winsys.h
index 469c79beccc..fe0617b682b 100644
--- a/src/gallium/winsys/radeon/drm/radeon_winsys.h
+++ b/src/gallium/winsys/radeon/drm/radeon_winsys.h
@@ -424,7 +424,8 @@ struct radeon_winsys {
      */
     struct radeon_winsys_cs *(*cs_create)(struct radeon_winsys *ws,
                                           enum ring_type ring_type,
-                                          void (*flush)(void *ctx, unsigned flags),
+                                          void (*flush)(void *ctx, unsigned flags,
+							struct pipe_fence_handle **fence),
                                           void *flush_ctx,
                                           struct radeon_winsys_cs_handle *trace_buf);
 
@@ -488,9 +489,14 @@ struct radeon_winsys {
      *
      * \param cs          A command stream to flush.
      * \param flags,      RADEON_FLUSH_ASYNC or 0.
-     * \param cs_trace_id A unique identifiant for the cs
+     * \param fence       Pointer to a fence. If non-NULL, a fence is inserted
+     *                    after the CS and is returned through this parameter.
+     * \param cs_trace_id A unique identifier of the cs, used for tracing.
      */
-    void (*cs_flush)(struct radeon_winsys_cs *cs, unsigned flags, uint32_t cs_trace_id);
+    void (*cs_flush)(struct radeon_winsys_cs *cs,
+                     unsigned flags,
+                     struct pipe_fence_handle **fence,
+                     uint32_t cs_trace_id);
 
     /**
      * Return TRUE if a buffer is referenced by a command stream.
@@ -520,13 +526,6 @@ struct radeon_winsys {
     void (*cs_sync_flush)(struct radeon_winsys_cs *cs);
 
     /**
-     * Return a fence associated with the CS. The fence will be signalled
-     * once the CS is flushed and all commands in the CS are completed
-     * by the GPU.
-     */
-    struct pipe_fence_handle *(*cs_create_fence)(struct radeon_winsys_cs *cs);
-
-    /**
      * Wait for the fence and return true if the fence has been signalled.
      * The timeout of 0 will only return the status.
      * The timeout of PIPE_TIMEOUT_INFINITE will always wait until the fence