1 files changed, 91 insertions, 0 deletions
diff --git a/src/gallium/winsys/g3dvl/nouveau/nouveau_screen.c b/src/gallium/winsys/g3dvl/nouveau/nouveau_screen.c
new file mode 100644
index 0000000000..f80d00050c
--- /dev/null
+++ b/src/gallium/winsys/g3dvl/nouveau/nouveau_screen.c
@@ -0,0 +1,91 @@
+#include "pipe/p_context.h"
+#include "util/u_memory.h"
+#include "nouveau_context.h"
+#include <nouveau_drm.h>
+#include "nouveau_dri.h"
+#include "nouveau_local.h"
+#include "nouveau_screen.h"
+#include "nouveau_swapbuffers.h"
+
+#if NOUVEAU_DRM_HEADER_PATCHLEVEL != 11
+#error nouveau_drm.h version does not match expected version
+#endif
+
+/*
+PUBLIC const char __driConfigOptions[] =
+DRI_CONF_BEGIN
+DRI_CONF_END;
+static const GLuint __driNConfigOptions = 0;
+*/
+
+int nouveau_check_dri_drm_ddx(dri_version_t *dri, dri_version_t *drm, dri_version_t *ddx)
+{
+	static const dri_version_t ddx_expected = {0, 0, NOUVEAU_DRM_HEADER_PATCHLEVEL};
+	static const dri_version_t dri_expected = {4, 0, 0};
+	static const dri_version_t drm_expected = {0, 0, NOUVEAU_DRM_HEADER_PATCHLEVEL};
+
+	assert(dri);
+	assert(drm);
+	assert(ddx);
+
+	if (dri->major != dri_expected.major || dri->minor < dri_expected.minor)
+	{
+		NOUVEAU_ERR("Unexpected DRI version.\n");
+		return 1;
+	}
+	if (drm->major != drm_expected.major || drm->minor < drm_expected.minor)
+	{
+		NOUVEAU_ERR("Unexpected DRM version.\n");
+		return 1;
+	}
+	if (ddx->major != ddx_expected.major || ddx->minor < ddx_expected.minor)
+	{
+		NOUVEAU_ERR("Unexpected DDX version.\n");
+		return 1;
+	}
+
+	return 0;
+}
+
+int
+nouveau_screen_create(dri_screen_t *dri_screen, dri_framebuffer_t *dri_framebuf)
+{
+	struct nouveau_dri	*nv_dri = dri_framebuf->private;
+	struct nouveau_screen	*nv_screen;
+	int			ret;
+
+	if (nouveau_check_dri_drm_ddx(&dri_screen->dri, &dri_screen->drm, &dri_screen->ddx))
+		return 1;
+
+	nv_screen = CALLOC_STRUCT(nouveau_screen);
+	if (!nv_screen)
+		return 1;
+	nv_screen->dri_screen = dri_screen;
+	dri_screen->private = (void*)nv_screen;
+
+	/*
+	driParseOptionInfo(&nv_screen->option_cache,
+			   __driConfigOptions, __driNConfigOptions);
+	*/
+
+	if ((ret = nouveau_device_open_existing(&nv_screen->device, 0,
+						dri_screen->fd, 0))) {
+		NOUVEAU_ERR("Failed opening nouveau device: %d.\n", ret);
+		return 1;
+	}
+
+	nv_screen->front_offset = nv_dri->front_offset;
+	nv_screen->front_pitch  = nv_dri->front_pitch * (nv_dri->bpp / 8);
+	nv_screen->front_cpp = nv_dri->bpp / 8;
+	nv_screen->front_height = nv_dri->height;
+
+	return 0;
+}
+
+void
+nouveau_screen_destroy(dri_screen_t *dri_screen)
+{
+	struct nouveau_screen *nv_screen = dri_screen->private;
+
+	FREE(nv_screen);
+}