1 files changed, 107 insertions, 0 deletions
diff --git a/src/glamo-drm.c b/src/glamo-drm.c
new file mode 100644
index 0000000..aac93bb
--- /dev/null
+++ b/src/glamo-drm.c
@@ -0,0 +1,107 @@
+/*
+ * DRI for the SMedia Glamo3362 X.org Driver
+ *
+ * Copyright 2009 Thomas White <taw@bitwiz.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <xf86.h>
+#include <xf86drm.h>
+#include <glamo_drm.h>
+#include <glamo_bo.h>
+
+#include "glamo.h"
+
+
+/* Submit the prepared command sequence to the kernel */
+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;
+}
+
+
+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;
+}
+
+
+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 */
+	pGlamo->cmdq_obj_pos[pGlamo->cmdq_obj_used] = pGlamo->cmdq_drm_used * 2;
+	pGlamo->cmdq_obj_used++;
+
+	/* Record command */
+	pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = reg;
+	pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = 0x0000;
+	pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = reg+2;
+	pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = 0x0000;
+
+	pGlamo->last_buffer_object = bo;
+}
+
+
+void GlamoDRMInit(GlamoPtr pGlamo)
+{
+	pGlamo->cmdq_objs = malloc(1024);
+	pGlamo->cmdq_obj_pos = malloc(1024);
+	pGlamo->cmdq_obj_used = 0;
+	pGlamo->cmdq_drm_used = 0;
+	pGlamo->cmdq_drm_size = 4 * 1024;
+	pGlamo->cmdq_drm = malloc(pGlamo->cmdq_drm_size);
+}