Merge pull request #182 from ascent12/drm-multi-gpu

DRM Multi-GPU

1 files changed, 145 insertions, 0 deletions

diff --git a/include/backend/drm/drm.h b/include/backend/drm/drm.h
new file mode 100644
index 00000000..6106a85a
--- /dev/null
+++ b/include/backend/drm/drm.h
@@ -0,0 +1,145 @@
+#ifndef BACKEND_DRM_DRM_H
+#define BACKEND_DRM_DRM_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <wayland-server.h>
+#include <xf86drmMode.h>
+#include <EGL/egl.h>
+#include <gbm.h>
+
+#include <wlr/backend/session.h>
+#include <wlr/backend/drm.h>
+#include <wlr/types/wlr_output.h>
+#include <wlr/egl.h>
+#include <wlr/util/list.h>
+
+#include "iface.h"
+#include "properties.h"
+#include "renderer.h"
+
+struct wlr_drm_plane {
+	uint32_t type;
+	uint32_t id;
+
+	uint32_t possible_crtcs;
+
+	struct wlr_drm_surface surf;
+	struct wlr_drm_surface mgpu_surf;
+
+	// Only used by cursor
+	float matrix[16];
+	struct wlr_renderer *wlr_rend;
+	struct wlr_texture *wlr_tex;
+	struct gbm_bo *cursor_bo;
+
+	union wlr_drm_plane_props props;
+};
+
+struct wlr_drm_crtc {
+	uint32_t id;
+	uint32_t mode_id; // atomic modesetting only
+	drmModeAtomicReq *atomic;
+
+	union {
+		struct {
+			struct wlr_drm_plane *overlay;
+			struct wlr_drm_plane *primary;
+			struct wlr_drm_plane *cursor;
+		};
+		struct wlr_drm_plane *planes[3];
+	};
+
+	union wlr_drm_crtc_props props;
+
+	struct wl_list connectors;
+};
+
+struct wlr_drm_backend {
+	struct wlr_backend backend;
+
+	struct wlr_drm_backend *parent;
+	const struct wlr_drm_interface *iface;
+
+	int fd;
+
+	size_t num_crtcs;
+	struct wlr_drm_crtc *crtcs;
+	size_t num_planes;
+	struct wlr_drm_plane *planes;
+
+	union {
+		struct {
+			size_t num_overlay_planes;
+			size_t num_primary_planes;
+			size_t num_cursor_planes;
+		};
+		size_t num_type_planes[3];
+	};
+
+	union {
+		struct {
+			struct wlr_drm_plane *overlay_planes;
+			struct wlr_drm_plane *primary_planes;
+			struct wlr_drm_plane *cursor_planes;
+		};
+		struct wlr_drm_plane *type_planes[3];
+	};
+
+	struct wl_display *display;
+	struct wl_event_source *drm_event;
+
+	struct wl_listener session_signal;
+	struct wl_listener drm_invalidated;
+
+	list_t *outputs;
+
+	struct wlr_drm_renderer renderer;
+	struct wlr_session *session;
+};
+
+enum wlr_drm_connector_state {
+	WLR_DRM_CONN_DISCONNECTED,
+	WLR_DRM_CONN_NEEDS_MODESET,
+	WLR_DRM_CONN_CLEANUP,
+	WLR_DRM_CONN_CONNECTED,
+};
+
+struct wlr_drm_mode {
+	struct wlr_output_mode wlr_mode;
+	drmModeModeInfo drm_mode;
+};
+
+struct wlr_drm_connector {
+	struct wlr_output output;
+	struct wlr_drm_backend *drm;
+
+	enum wlr_drm_connector_state state;
+	uint32_t id;
+
+	struct wlr_drm_crtc *crtc;
+	uint32_t possible_crtc;
+
+	union wlr_drm_connector_props props;
+
+	uint32_t width;
+	uint32_t height;
+
+	drmModeCrtc *old_crtc;
+
+	bool pageflip_pending;
+	struct wl_event_source *retry_pageflip;
+};
+
+bool wlr_drm_check_features(struct wlr_drm_backend *drm);
+bool wlr_drm_resources_init(struct wlr_drm_backend *drm);
+void wlr_drm_resources_free(struct wlr_drm_backend *drm);
+void wlr_drm_restore_outputs(struct wlr_drm_backend *drm);
+void wlr_drm_connector_cleanup(struct wlr_drm_connector *conn);
+void wlr_drm_scan_connectors(struct wlr_drm_backend *state);
+int wlr_drm_event(int fd, uint32_t mask, void *data);
+
+void wlr_drm_connector_start_renderer(struct wlr_drm_connector *conn);
+
+#endif