linux/drivers/gpu/drm/xen/xen_drm_front_kms.c

// SPDX-License-Identifier: GPL-2.0 OR MIT

/*
 *  Xen para-virtual DRM device
 *
 * Copyright (C) 2016-2018 EPAM Systems Inc.
 *
 * Author: Oleksandr Andrushchenko <[email protected]>
 */

#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_vblank.h>

#include "xen_drm_front.h"
#include "xen_drm_front_conn.h"
#include "xen_drm_front_kms.h"

/*
 * Timeout in ms to wait for frame done event from the backend:
 * must be a bit more than IO time-out
 */
#define FRAME_DONE_TO_MS …

static struct xen_drm_front_drm_pipeline *
to_xen_drm_pipeline(struct drm_simple_display_pipe *pipe)
{ … }

static void fb_destroy(struct drm_framebuffer *fb)
{ … }

static const struct drm_framebuffer_funcs fb_funcs = …;

static struct drm_framebuffer *
fb_create(struct drm_device *dev, struct drm_file *filp,
	  const struct drm_mode_fb_cmd2 *mode_cmd)
{ … }

static const struct drm_mode_config_funcs mode_config_funcs = …;

static void send_pending_event(struct xen_drm_front_drm_pipeline *pipeline)
{ … }

static void display_enable(struct drm_simple_display_pipe *pipe,
			   struct drm_crtc_state *crtc_state,
			   struct drm_plane_state *plane_state)
{ … }

static void display_disable(struct drm_simple_display_pipe *pipe)
{ … }

void xen_drm_front_kms_on_frame_done(struct xen_drm_front_drm_pipeline *pipeline,
				     u64 fb_cookie)
{ … }

static void pflip_to_worker(struct work_struct *work)
{ … }

static bool display_send_page_flip(struct drm_simple_display_pipe *pipe,
				   struct drm_plane_state *old_plane_state)
{ … }

static int display_check(struct drm_simple_display_pipe *pipe,
			 struct drm_plane_state *plane_state,
			 struct drm_crtc_state *crtc_state)
{ … }

static void display_update(struct drm_simple_display_pipe *pipe,
			   struct drm_plane_state *old_plane_state)
{ … }

static enum drm_mode_status
display_mode_valid(struct drm_simple_display_pipe *pipe,
		   const struct drm_display_mode *mode)
{ … }

static const struct drm_simple_display_pipe_funcs display_funcs = …;

static int display_pipe_init(struct xen_drm_front_drm_info *drm_info,
			     int index, struct xen_drm_front_cfg_connector *cfg,
			     struct xen_drm_front_drm_pipeline *pipeline)
{ … }

int xen_drm_front_kms_init(struct xen_drm_front_drm_info *drm_info)
{ … }

void xen_drm_front_kms_fini(struct xen_drm_front_drm_info *drm_info)
{ … }