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-rw-r--r--include/backend/drm/drm.h145
-rw-r--r--include/backend/drm/iface.h35
-rw-r--r--include/backend/drm/properties.h67
-rw-r--r--include/backend/drm/renderer.h54
-rw-r--r--include/backend/drm/util.h39
5 files changed, 340 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
diff --git a/include/backend/drm/iface.h b/include/backend/drm/iface.h
new file mode 100644
index 00000000..bc61eb51
--- /dev/null
+++ b/include/backend/drm/iface.h
@@ -0,0 +1,35 @@
+#ifndef BACKEND_DRM_IFACE_H
+#define BACKEND_DRM_IFACE_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <gbm.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+struct wlr_drm_backend;
+struct wlr_drm_connector;
+struct wlr_drm_crtc;
+
+// Used to provide atomic or legacy DRM functions
+struct wlr_drm_interface {
+ // Enable or disable DPMS for connector
+ void (*conn_enable)(struct wlr_drm_backend *drm,
+ struct wlr_drm_connector *conn, bool enable);
+ // Pageflip on crtc. If mode is non-NULL perform a full modeset using it.
+ bool (*crtc_pageflip)(struct wlr_drm_backend *drm,
+ struct wlr_drm_connector *conn, struct wlr_drm_crtc *crtc,
+ uint32_t fb_id, drmModeModeInfo *mode);
+ // Enable the cursor buffer on crtc. Set bo to NULL to disable
+ bool (*crtc_set_cursor)(struct wlr_drm_backend *drm,
+ struct wlr_drm_crtc *crtc, struct gbm_bo *bo);
+ // Move the cursor on crtc
+ bool (*crtc_move_cursor)(struct wlr_drm_backend *drm,
+ struct wlr_drm_crtc *crtc, int x, int y);
+};
+
+extern const struct wlr_drm_interface atomic_iface;
+extern const struct wlr_drm_interface legacy_iface;
+
+#endif
diff --git a/include/backend/drm/properties.h b/include/backend/drm/properties.h
new file mode 100644
index 00000000..7de386ea
--- /dev/null
+++ b/include/backend/drm/properties.h
@@ -0,0 +1,67 @@
+#ifndef BACKEND_DRM_PROPERTIES_H
+#define BACKEND_DRM_PROPERTIES_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+/*
+ * These types contain the property ids for several DRM objects.
+ * See https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-kms.html#kms-properties
+ * for more details.
+ */
+
+union wlr_drm_connector_props {
+ struct {
+ uint32_t edid;
+ uint32_t dpms;
+
+ // atomic-modesetting only
+
+ uint32_t crtc_id;
+ };
+ uint32_t props[3];
+};
+
+union wlr_drm_crtc_props {
+ struct {
+ // Neither of these are guranteed to exist
+ uint32_t rotation;
+ uint32_t scaling_mode;
+
+ // atomic-modesetting only
+
+ uint32_t active;
+ uint32_t mode_id;
+ };
+ uint32_t props[4];
+};
+
+union wlr_drm_plane_props {
+ struct {
+ uint32_t type;
+ uint32_t rotation; // Not guranteed to exist
+
+ // atomic-modesetting only
+
+ uint32_t src_x;
+ uint32_t src_y;
+ uint32_t src_w;
+ uint32_t src_h;
+ uint32_t crtc_x;
+ uint32_t crtc_y;
+ uint32_t crtc_w;
+ uint32_t crtc_h;
+ uint32_t fb_id;
+ uint32_t crtc_id;
+ };
+ uint32_t props[12];
+};
+
+bool wlr_drm_get_connector_props(int fd, uint32_t id, union wlr_drm_connector_props *out);
+bool wlr_drm_get_crtc_props(int fd, uint32_t id, union wlr_drm_crtc_props *out);
+bool wlr_drm_get_plane_props(int fd, uint32_t id, union wlr_drm_plane_props *out);
+
+bool wlr_drm_get_prop(int fd, uint32_t obj, uint32_t prop, uint64_t *ret);
+void *wlr_drm_get_prop_blob(int fd, uint32_t obj, uint32_t prop, size_t *ret_len);
+
+#endif
diff --git a/include/backend/drm/renderer.h b/include/backend/drm/renderer.h
new file mode 100644
index 00000000..45127cd0
--- /dev/null
+++ b/include/backend/drm/renderer.h
@@ -0,0 +1,54 @@
+#ifndef BACKEND_DRM_RENDERER_H
+#define BACKEND_DRM_RENDERER_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <EGL/egl.h>
+#include <gbm.h>
+
+#include <wlr/render.h>
+
+struct wlr_drm_backend;
+struct wlr_drm_plane;
+
+struct wlr_drm_renderer {
+ int fd;
+ struct gbm_device *gbm;
+ struct wlr_egl egl;
+
+ struct wlr_renderer *wlr_rend;
+};
+
+struct wlr_drm_surface {
+ struct wlr_drm_renderer *renderer;
+
+ uint32_t width;
+ uint32_t height;
+
+ struct gbm_surface *gbm;
+ EGLSurface egl;
+
+ struct gbm_bo *front;
+ struct gbm_bo *back;
+};
+
+bool wlr_drm_renderer_init(struct wlr_drm_backend *drm,
+ struct wlr_drm_renderer *renderer);
+void wlr_drm_renderer_finish(struct wlr_drm_renderer *renderer);
+
+bool wlr_drm_surface_init(struct wlr_drm_surface *surf,
+ struct wlr_drm_renderer *renderer, uint32_t width, uint32_t height,
+ uint32_t format, uint32_t flags);
+
+bool wlr_drm_plane_surfaces_init(struct wlr_drm_plane *plane, struct wlr_drm_backend *drm,
+ int32_t width, uint32_t height, uint32_t format);
+
+void wlr_drm_surface_finish(struct wlr_drm_surface *surf);
+void wlr_drm_surface_make_current(struct wlr_drm_surface *surf);
+struct gbm_bo *wlr_drm_surface_swap_buffers(struct wlr_drm_surface *surf);
+struct gbm_bo *wlr_drm_surface_get_front(struct wlr_drm_surface *surf);
+void wlr_drm_surface_post(struct wlr_drm_surface *surf);
+struct gbm_bo *wlr_drm_surface_mgpu_copy(struct wlr_drm_surface *dest, struct gbm_bo *src);
+
+#endif
diff --git a/include/backend/drm/util.h b/include/backend/drm/util.h
new file mode 100644
index 00000000..6818b4db
--- /dev/null
+++ b/include/backend/drm/util.h
@@ -0,0 +1,39 @@
+#ifndef BACKEND_DRM_UTIL_H
+#define BACKEND_DRM_UTIL_H
+
+#include <stdint.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+#include <wlr/types/wlr_output.h>
+
+// Calculates a more accurate refresh rate (mHz) than what mode itself provides
+int32_t calculate_refresh_rate(drmModeModeInfo *mode);
+// Populates the make/model/phys_{width,height} of output from the edid data
+void parse_edid(struct wlr_output *restrict output, size_t len, const uint8_t *data);
+// Returns the string representation of a DRM output type
+const char *conn_get_name(uint32_t type_id);
+// Returns the DRM framebuffer id for a gbm_bo
+uint32_t get_fb_for_bo(struct gbm_bo *bo);
+
+// Part of match_obj
+enum {
+ UNMATCHED = (uint32_t)-1,
+ SKIP = (uint32_t)-2,
+};
+
+/*
+ * Tries to match some DRM objects with some other DRM resource.
+ * e.g. Match CRTCs with Encoders, CRTCs with Planes.
+ *
+ * objs contains a bit array which resources it can be matched with.
+ * e.g. Bit 0 set means can be matched with res[0]
+ *
+ * res contains an index of which objs it is matched with or UNMATCHED.
+ *
+ * This solution is left in out.
+ * Returns the total number of matched solutions.
+ */
+size_t match_obj(size_t num_objs, const uint32_t objs[static restrict num_objs],
+ size_t num_res, const uint32_t res[static restrict num_res],
+ uint32_t out[static restrict num_res]);
+#endif