Dispatch command buffer when cache is full

1 files changed, 37 insertions, 25 deletions

diff --git a/src/glamo-kms-exa.c b/src/glamo-kms-exa.c
index 9c98724..99fab0c 100644
--- a/src/glamo-kms-exa.c
+++ b/src/glamo-kms-exa.c
@@ -118,9 +118,40 @@ static const CARD8 GLAMOBltRop[16] = {
 };
 
 
+/* Submit the prepared command sequence to the kernel */
+static void GlamoDRMDispatch(GlamoPtr pGlamo)
+{
+	drm_glamo_cmd_buffer_t cmdbuf;
+	int r;
+
+	cmdbuf.buf = (char *)pGlamo->cmdq_drm;
+	cmdbuf.bufsz = pGlamo->cmdq_drm_used * 2;	/* -> bytes */
+	cmdbuf.nobjs = pGlamo->cmdq_obj_used;
+	cmdbuf.objs = pGlamo->cmdq_objs;
+	cmdbuf.obj_pos = pGlamo->cmdq_obj_pos;
+
+	r = drmCommandWrite(pGlamo->drm_fd, DRM_GLAMO_CMDBUF,
+	                    &cmdbuf, sizeof(cmdbuf));
+	if ( r != 0 ) {
+		xf86DrvMsg(pGlamo->pScreen->myNum, X_ERROR,
+		           "DRM_GLAMO_CMDBUF failed\n");
+	}
+
+	/* Reset counts to zero for the next sequence */
+	pGlamo->cmdq_obj_used = 0;
+	pGlamo->cmdq_drm_used = 0;
+}
+
+
 static inline void GlamoDRMAddCommand(GlamoPtr pGlamo, uint16_t reg,
                                       uint16_t val)
 {
+	if ( pGlamo->cmdq_drm_used == pGlamo->cmdq_drm_size ) {
+		xf86DrvMsg(pGlamo->pScreen->myNum, X_INFO,
+		           "Forced command cache flush.\n");
+		GlamoDRMDispatch(pGlamo);
+	}
+
 	/* Record command */
 	pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = reg;
 	pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = val;
@@ -130,6 +161,12 @@ static inline void GlamoDRMAddCommand(GlamoPtr pGlamo, uint16_t reg,
 static inline void GlamoDRMAddCommandBO(GlamoPtr pGlamo, uint16_t reg,
                                         struct glamo_bo *bo)
 {
+	if ( pGlamo->cmdq_drm_used == pGlamo->cmdq_drm_size ) {
+		xf86DrvMsg(pGlamo->pScreen->myNum, X_INFO,
+		           "Forced command cache flush.\n");
+		GlamoDRMDispatch(pGlamo);
+	}
+
 	/* Record object position */
 	pGlamo->cmdq_objs[pGlamo->cmdq_obj_used] = bo->handle;
 	/* -> bytes */
@@ -144,31 +181,6 @@ static inline void GlamoDRMAddCommandBO(GlamoPtr pGlamo, uint16_t reg,
 }
 
 
-/* Submit the prepared command sequence to the kernel */
-static void GlamoDRMDispatch(GlamoPtr pGlamo)
-{
-	drm_glamo_cmd_buffer_t cmdbuf;
-	int r;
-
-	cmdbuf.buf = (char *)pGlamo->cmdq_drm;
-	cmdbuf.bufsz = pGlamo->cmdq_drm_used * 2;	/* -> bytes */
-	cmdbuf.nobjs = pGlamo->cmdq_obj_used;
-	cmdbuf.objs = pGlamo->cmdq_objs;
-	cmdbuf.obj_pos = pGlamo->cmdq_obj_pos;
-
-	r = drmCommandWrite(pGlamo->drm_fd, DRM_GLAMO_CMDBUF,
-	                    &cmdbuf, sizeof(cmdbuf));
-	if ( r != 0 ) {
-		xf86DrvMsg(pGlamo->pScreen->myNum, X_ERROR,
-		           "DRM_GLAMO_CMDBUF failed\n");
-	}
-
-	/* Reset counts to zero for the next sequence */
-	pGlamo->cmdq_obj_used = 0;
-	pGlamo->cmdq_drm_used = 0;
-}
-
-
 unsigned int driGetPixmapHandle(PixmapPtr pPixmap, unsigned int *flags)
 {
 	struct glamo_exa_pixmap_priv *priv;