[linux-2.6-block.git] / drivers / gpu / drm / virtio / virtgpu_display.c

/*
 * Copyright (C) 2015 Red Hat, Inc.
 * All Rights Reserved.
 *
 * Authors:
 *    Dave Airlie
 *    Alon Levy
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include "virtgpu_drv.h"
#include <drm/drm_crtc_helper.h>
#include <drm/drm_atomic_helper.h>

#define XRES_MIN   320
#define YRES_MIN   200

#define XRES_DEF  1024
#define YRES_DEF   768

#define XRES_MAX  8192
#define YRES_MAX  8192

static void virtio_gpu_crtc_gamma_set(struct drm_crtc *crtc,
				      u16 *red, u16 *green, u16 *blue,
				      uint32_t start, uint32_t size)
{
	/* TODO */
}

static void
virtio_gpu_hide_cursor(struct virtio_gpu_device *vgdev,
		       struct virtio_gpu_output *output)
{
	output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_UPDATE_CURSOR);
	output->cursor.resource_id = 0;
	virtio_gpu_cursor_ping(vgdev, output);
}

static int virtio_gpu_crtc_cursor_set(struct drm_crtc *crtc,
				      struct drm_file *file_priv,
				      uint32_t handle,
				      uint32_t width,
				      uint32_t height,
				      int32_t hot_x, int32_t hot_y)
{
	struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
	struct virtio_gpu_output *output =
		container_of(crtc, struct virtio_gpu_output, crtc);
	struct drm_gem_object *gobj = NULL;
	struct virtio_gpu_object *qobj = NULL;
	struct virtio_gpu_fence *fence = NULL;
	int ret = 0;

	if (handle == 0) {
		virtio_gpu_hide_cursor(vgdev, output);
		return 0;
	}

	/* lookup the cursor */
	gobj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
	if (gobj == NULL)
		return -ENOENT;

	qobj = gem_to_virtio_gpu_obj(gobj);

	if (!qobj->hw_res_handle) {
		ret = -EINVAL;
		goto out;
	}

	virtio_gpu_cmd_transfer_to_host_2d(vgdev, qobj->hw_res_handle, 0,
					   cpu_to_le32(64),
					   cpu_to_le32(64),
					   0, 0, &fence);
	ret = virtio_gpu_object_reserve(qobj, false);
	if (!ret) {
		reservation_object_add_excl_fence(qobj->tbo.resv,
						  &fence->f);
		fence_put(&fence->f);
		virtio_gpu_object_unreserve(qobj);
		virtio_gpu_object_wait(qobj, false);
	}

	output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_UPDATE_CURSOR);
	output->cursor.resource_id = cpu_to_le32(qobj->hw_res_handle);
	output->cursor.hot_x = cpu_to_le32(hot_x);
	output->cursor.hot_y = cpu_to_le32(hot_y);
	virtio_gpu_cursor_ping(vgdev, output);
	ret = 0;

out:
	drm_gem_object_unreference_unlocked(gobj);
	return ret;
}

static int virtio_gpu_crtc_cursor_move(struct drm_crtc *crtc,
				    int x, int y)
{
	struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
	struct virtio_gpu_output *output =
		container_of(crtc, struct virtio_gpu_output, crtc);

	output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_MOVE_CURSOR);
	output->cursor.pos.x = cpu_to_le32(x);
	output->cursor.pos.y = cpu_to_le32(y);
	virtio_gpu_cursor_ping(vgdev, output);
	return 0;
}

static int virtio_gpu_page_flip(struct drm_crtc *crtc,
				struct drm_framebuffer *fb,
				struct drm_pending_vblank_event *event,
				uint32_t flags)
{
	struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
	struct virtio_gpu_output *output =
		container_of(crtc, struct virtio_gpu_output, crtc);
	struct drm_plane *plane = crtc->primary;
	struct virtio_gpu_framebuffer *vgfb;
	struct virtio_gpu_object *bo;
	unsigned long irqflags;
	uint32_t handle;

	plane->fb = fb;
	vgfb = to_virtio_gpu_framebuffer(plane->fb);
	bo = gem_to_virtio_gpu_obj(vgfb->obj);
	handle = bo->hw_res_handle;

	DRM_DEBUG("handle 0x%x%s, crtc %dx%d\n", handle,
		  bo->dumb ? ", dumb" : "",
		  crtc->mode.hdisplay, crtc->mode.vdisplay);
	if (bo->dumb) {
		virtio_gpu_cmd_transfer_to_host_2d
			(vgdev, handle, 0,
			 cpu_to_le32(crtc->mode.hdisplay),
			 cpu_to_le32(crtc->mode.vdisplay),
			 0, 0, NULL);
	}
	virtio_gpu_cmd_set_scanout(vgdev, output->index, handle,
				   crtc->mode.hdisplay,
				   crtc->mode.vdisplay, 0, 0);
	virtio_gpu_cmd_resource_flush(vgdev, handle, 0, 0,
				      crtc->mode.hdisplay,
				      crtc->mode.vdisplay);

	if (event) {
		spin_lock_irqsave(&crtc->dev->event_lock, irqflags);
		drm_send_vblank_event(crtc->dev, -1, event);
		spin_unlock_irqrestore(&crtc->dev->event_lock, irqflags);
	}

	return 0;
}

static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
	.cursor_set2            = virtio_gpu_crtc_cursor_set,
	.cursor_move            = virtio_gpu_crtc_cursor_move,
	.gamma_set              = virtio_gpu_crtc_gamma_set,
	.set_config             = drm_atomic_helper_set_config,
	.destroy                = drm_crtc_cleanup,

	.page_flip              = virtio_gpu_page_flip,
	.reset                  = drm_atomic_helper_crtc_reset,
	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
	.atomic_destroy_state   = drm_atomic_helper_crtc_destroy_state,
};

static void virtio_gpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
{
	struct virtio_gpu_framebuffer *virtio_gpu_fb
		= to_virtio_gpu_framebuffer(fb);

	if (virtio_gpu_fb->obj)
		drm_gem_object_unreference_unlocked(virtio_gpu_fb->obj);
	drm_framebuffer_cleanup(fb);
	kfree(virtio_gpu_fb);
}

static int
virtio_gpu_framebuffer_surface_dirty(struct drm_framebuffer *fb,
				     struct drm_file *file_priv,
				     unsigned flags, unsigned color,
				     struct drm_clip_rect *clips,
				     unsigned num_clips)
{
	struct virtio_gpu_framebuffer *virtio_gpu_fb
		= to_virtio_gpu_framebuffer(fb);

	return virtio_gpu_surface_dirty(virtio_gpu_fb, clips, num_clips);
}

static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = {
	.destroy = virtio_gpu_user_framebuffer_destroy,
	.dirty = virtio_gpu_framebuffer_surface_dirty,
};

int
virtio_gpu_framebuffer_init(struct drm_device *dev,
			    struct virtio_gpu_framebuffer *vgfb,
			    const struct drm_mode_fb_cmd2 *mode_cmd,
			    struct drm_gem_object *obj)
{
	int ret;
	struct virtio_gpu_object *bo;
	vgfb->obj = obj;

	bo = gem_to_virtio_gpu_obj(obj);

	ret = drm_framebuffer_init(dev, &vgfb->base, &virtio_gpu_fb_funcs);
	if (ret) {
		vgfb->obj = NULL;
		return ret;
	}
	drm_helper_mode_fill_fb_struct(&vgfb->base, mode_cmd);

	spin_lock_init(&vgfb->dirty_lock);
	vgfb->x1 = vgfb->y1 = INT_MAX;
	vgfb->x2 = vgfb->y2 = 0;
	return 0;
}

static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
	struct drm_device *dev = crtc->dev;
	struct virtio_gpu_device *vgdev = dev->dev_private;
	struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);

	virtio_gpu_cmd_set_scanout(vgdev, output->index, 0,
				   crtc->mode.hdisplay,
				   crtc->mode.vdisplay, 0, 0);
}

static void virtio_gpu_crtc_enable(struct drm_crtc *crtc)
{
}

static void virtio_gpu_crtc_disable(struct drm_crtc *crtc)
{
	struct drm_device *dev = crtc->dev;
	struct virtio_gpu_device *vgdev = dev->dev_private;
	struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);

	virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 0, 0, 0, 0);
}

static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc,
					struct drm_crtc_state *state)
{
	return 0;
}

static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
	.enable        = virtio_gpu_crtc_enable,
	.disable       = virtio_gpu_crtc_disable,
	.mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
	.atomic_check  = virtio_gpu_crtc_atomic_check,
};

static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
				    struct drm_display_mode *mode,
				    struct drm_display_mode *adjusted_mode)
{
}

static void virtio_gpu_enc_enable(struct drm_encoder *encoder)
{
}

static void virtio_gpu_enc_disable(struct drm_encoder *encoder)
{
}

static int virtio_gpu_conn_get_modes(struct drm_connector *connector)
{
	struct virtio_gpu_output *output =
		drm_connector_to_virtio_gpu_output(connector);
	struct drm_display_mode *mode = NULL;
	int count, width, height;

	width  = le32_to_cpu(output->info.r.width);
	height = le32_to_cpu(output->info.r.height);
	count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);

	if (width == 0 || height == 0) {
		width = XRES_DEF;
		height = YRES_DEF;
		drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
	} else {
		DRM_DEBUG("add mode: %dx%d\n", width, height);
		mode = drm_cvt_mode(connector->dev, width, height, 60,
				    false, false, false);
		mode->type |= DRM_MODE_TYPE_PREFERRED;
		drm_mode_probed_add(connector, mode);
		count++;
	}

	return count;
}

static int virtio_gpu_conn_mode_valid(struct drm_connector *connector,
				      struct drm_display_mode *mode)
{
	struct virtio_gpu_output *output =
		drm_connector_to_virtio_gpu_output(connector);
	int width, height;

	width  = le32_to_cpu(output->info.r.width);
	height = le32_to_cpu(output->info.r.height);

	if (!(mode->type & DRM_MODE_TYPE_PREFERRED))
		return MODE_OK;
	if (mode->hdisplay == XRES_DEF && mode->vdisplay == YRES_DEF)
		return MODE_OK;
	if (mode->hdisplay <= width  && mode->hdisplay >= width - 16 &&
	    mode->vdisplay <= height && mode->vdisplay >= height - 16)
		return MODE_OK;

	DRM_DEBUG("del mode: %dx%d\n", mode->hdisplay, mode->vdisplay);
	return MODE_BAD;
}

static struct drm_encoder*
virtio_gpu_best_encoder(struct drm_connector *connector)
{
	struct virtio_gpu_output *virtio_gpu_output =
		drm_connector_to_virtio_gpu_output(connector);

	return &virtio_gpu_output->enc;
}

static const struct drm_encoder_helper_funcs virtio_gpu_enc_helper_funcs = {
	.mode_set   = virtio_gpu_enc_mode_set,
	.enable     = virtio_gpu_enc_enable,
	.disable    = virtio_gpu_enc_disable,
};

static const struct drm_connector_helper_funcs virtio_gpu_conn_helper_funcs = {
	.get_modes    = virtio_gpu_conn_get_modes,
	.mode_valid   = virtio_gpu_conn_mode_valid,
	.best_encoder = virtio_gpu_best_encoder,
};

static enum drm_connector_status virtio_gpu_conn_detect(
			struct drm_connector *connector,
			bool force)
{
	struct virtio_gpu_output *output =
		drm_connector_to_virtio_gpu_output(connector);

	if (output->info.enabled)
		return connector_status_connected;
	else
		return connector_status_disconnected;
}

static void virtio_gpu_conn_destroy(struct drm_connector *connector)
{
	struct virtio_gpu_output *virtio_gpu_output =
		drm_connector_to_virtio_gpu_output(connector);

	drm_connector_unregister(connector);
	drm_connector_cleanup(connector);
	kfree(virtio_gpu_output);
}

static const struct drm_connector_funcs virtio_gpu_connector_funcs = {
	.dpms = drm_atomic_helper_connector_dpms,
	.detect = virtio_gpu_conn_detect,
	.fill_modes = drm_helper_probe_single_connector_modes,
	.destroy = virtio_gpu_conn_destroy,
	.reset = drm_atomic_helper_connector_reset,
	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};

static const struct drm_encoder_funcs virtio_gpu_enc_funcs = {
	.destroy = drm_encoder_cleanup,
};

static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index)
{
	struct drm_device *dev = vgdev->ddev;
	struct virtio_gpu_output *output = vgdev->outputs + index;
	struct drm_connector *connector = &output->conn;
	struct drm_encoder *encoder = &output->enc;
	struct drm_crtc *crtc = &output->crtc;
	struct drm_plane *plane;

	output->index = index;
	if (index == 0) {
		output->info.enabled = cpu_to_le32(true);
		output->info.r.width = cpu_to_le32(XRES_DEF);
		output->info.r.height = cpu_to_le32(YRES_DEF);
	}

	plane = virtio_gpu_plane_init(vgdev, index);
	if (IS_ERR(plane))
		return PTR_ERR(plane);
	drm_crtc_init_with_planes(dev, crtc, plane, NULL,
				  &virtio_gpu_crtc_funcs, NULL);
	drm_mode_crtc_set_gamma_size(crtc, 256);
	drm_crtc_helper_add(crtc, &virtio_gpu_crtc_helper_funcs);
	plane->crtc = crtc;

	drm_connector_init(dev, connector, &virtio_gpu_connector_funcs,
			   DRM_MODE_CONNECTOR_VIRTUAL);
	drm_connector_helper_add(connector, &virtio_gpu_conn_helper_funcs);

	drm_encoder_init(dev, encoder, &virtio_gpu_enc_funcs,
			 DRM_MODE_ENCODER_VIRTUAL, NULL);
	drm_encoder_helper_add(encoder, &virtio_gpu_enc_helper_funcs);
	encoder->possible_crtcs = 1 << index;

	drm_mode_connector_attach_encoder(connector, encoder);
	drm_connector_register(connector);
	return 0;
}

static struct drm_framebuffer *
virtio_gpu_user_framebuffer_create(struct drm_device *dev,
				   struct drm_file *file_priv,
				   const struct drm_mode_fb_cmd2 *mode_cmd)
{
	struct drm_gem_object *obj = NULL;
	struct virtio_gpu_framebuffer *virtio_gpu_fb;
	int ret;

	/* lookup object associated with res handle */
	obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
	if (!obj)
		return ERR_PTR(-EINVAL);

	virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL);
	if (virtio_gpu_fb == NULL)
		return ERR_PTR(-ENOMEM);

	ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
	if (ret) {
		kfree(virtio_gpu_fb);
		if (obj)
			drm_gem_object_unreference_unlocked(obj);
		return NULL;
	}

	return &virtio_gpu_fb->base;
}

static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
	.fb_create = virtio_gpu_user_framebuffer_create,
	.atomic_check = drm_atomic_helper_check,
	.atomic_commit = drm_atomic_helper_commit,
};

int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
{
	int i;

	drm_mode_config_init(vgdev->ddev);
	vgdev->ddev->mode_config.funcs = (void *)&virtio_gpu_mode_funcs;

	/* modes will be validated against the framebuffer size */
	vgdev->ddev->mode_config.min_width = XRES_MIN;
	vgdev->ddev->mode_config.min_height = YRES_MIN;
	vgdev->ddev->mode_config.max_width = XRES_MAX;
	vgdev->ddev->mode_config.max_height = YRES_MAX;

	for (i = 0 ; i < vgdev->num_scanouts; ++i)
		vgdev_output_init(vgdev, i);

        drm_mode_config_reset(vgdev->ddev);
	return 0;
}

void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
{
	virtio_gpu_fbdev_fini(vgdev);
	drm_mode_config_cleanup(vgdev->ddev);
}
Commit	Line	Data
dc5698e8 DA	1	/*
	2	* Copyright (C) 2015 Red Hat, Inc.
	3	* All Rights Reserved.
	4	*
	5	* Authors:
	6	* Dave Airlie
	7	* Alon Levy
	8	*
	9	* Permission is hereby granted, free of charge, to any person obtaining a
	10	* copy of this software and associated documentation files (the "Software"),
	11	* to deal in the Software without restriction, including without limitation
	12	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	13	* and/or sell copies of the Software, and to permit persons to whom the
	14	* Software is furnished to do so, subject to the following conditions:
	15	*
	16	* The above copyright notice and this permission notice shall be included in
	17	* all copies or substantial portions of the Software.
	18	*
	19	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	20	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	21	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	22	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	23	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	24	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	25	* OTHER DEALINGS IN THE SOFTWARE.
	26	*/
	27
	28	#include "virtgpu_drv.h"
	29	#include <drm/drm_crtc_helper.h>
	30	#include <drm/drm_atomic_helper.h>
	31
	32	#define XRES_MIN 320
	33	#define YRES_MIN 200
	34
	35	#define XRES_DEF 1024
	36	#define YRES_DEF 768
	37
	38	#define XRES_MAX 8192
	39	#define YRES_MAX 8192
	40
	41	static void virtio_gpu_crtc_gamma_set(struct drm_crtc *crtc,
	42	u16 red, u16 green, u16 *blue,
	43	uint32_t start, uint32_t size)
	44	{
	45	/* TODO */
	46	}
	47
	48	static void
	49	virtio_gpu_hide_cursor(struct virtio_gpu_device *vgdev,
	50	struct virtio_gpu_output *output)
	51	{
	52	output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_UPDATE_CURSOR);
	53	output->cursor.resource_id = 0;
	54	virtio_gpu_cursor_ping(vgdev, output);
	55	}
	56
	57	static int virtio_gpu_crtc_cursor_set(struct drm_crtc *crtc,
	58	struct drm_file *file_priv,
	59	uint32_t handle,
	60	uint32_t width,
	61	uint32_t height,
	62	int32_t hot_x, int32_t hot_y)
	63	{
	64	struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
65	struct virtio_gpu_output *output =
66	container_of(crtc, struct virtio_gpu_output, crtc);
67	struct drm_gem_object *gobj = NULL;
68	struct virtio_gpu_object *qobj = NULL;
69	struct virtio_gpu_fence *fence = NULL;
70	int ret = 0;
71
72	if (handle == 0) {
73	virtio_gpu_hide_cursor(vgdev, output);
74	return 0;
75	}
76
77	/* lookup the cursor */
78	gobj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
79	if (gobj == NULL)
80	return -ENOENT;
81
82	qobj = gem_to_virtio_gpu_obj(gobj);
83
84	if (!qobj->hw_res_handle) {
85	ret = -EINVAL;
86	goto out;
87	}
88
89	virtio_gpu_cmd_transfer_to_host_2d(vgdev, qobj->hw_res_handle, 0,
90	cpu_to_le32(64),
91	cpu_to_le32(64),
92	0, 0, &fence);
6d415334 GH	93	ret = virtio_gpu_object_reserve(qobj, false);
	94	if (!ret) {
	95	reservation_object_add_excl_fence(qobj->tbo.resv,
	96	&fence->f);
	97	fence_put(&fence->f);
	98	virtio_gpu_object_unreserve(qobj);
	99	virtio_gpu_object_wait(qobj, false);
	100	}
dc5698e8 DA	101
	102	output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_UPDATE_CURSOR);
	103	output->cursor.resource_id = cpu_to_le32(qobj->hw_res_handle);
	104	output->cursor.hot_x = cpu_to_le32(hot_x);
	105	output->cursor.hot_y = cpu_to_le32(hot_y);
	106	virtio_gpu_cursor_ping(vgdev, output);
	107	ret = 0;
	108
	109	out:
	110	drm_gem_object_unreference_unlocked(gobj);
	111	return ret;
	112	}
	113
	114	static int virtio_gpu_crtc_cursor_move(struct drm_crtc *crtc,
	115	int x, int y)
	116	{
	117	struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
	118	struct virtio_gpu_output *output =
	119	container_of(crtc, struct virtio_gpu_output, crtc);
	120
	121	output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_MOVE_CURSOR);
	122	output->cursor.pos.x = cpu_to_le32(x);
	123	output->cursor.pos.y = cpu_to_le32(y);
	124	virtio_gpu_cursor_ping(vgdev, output);
	125	return 0;
	126	}
	127
d24796a4 GH	128	static int virtio_gpu_page_flip(struct drm_crtc *crtc,
	129	struct drm_framebuffer *fb,
	130	struct drm_pending_vblank_event *event,
	131	uint32_t flags)
	132	{
	133	struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
	134	struct virtio_gpu_output *output =
	135	container_of(crtc, struct virtio_gpu_output, crtc);
	136	struct drm_plane *plane = crtc->primary;
	137	struct virtio_gpu_framebuffer *vgfb;
	138	struct virtio_gpu_object *bo;
	139	unsigned long irqflags;
	140	uint32_t handle;
	141
	142	plane->fb = fb;
	143	vgfb = to_virtio_gpu_framebuffer(plane->fb);
	144	bo = gem_to_virtio_gpu_obj(vgfb->obj);
	145	handle = bo->hw_res_handle;
	146
	147	DRM_DEBUG("handle 0x%x%s, crtc %dx%d\n", handle,
	148	bo->dumb ? ", dumb" : "",
	149	crtc->mode.hdisplay, crtc->mode.vdisplay);
	150	if (bo->dumb) {
	151	virtio_gpu_cmd_transfer_to_host_2d
	152	(vgdev, handle, 0,
	153	cpu_to_le32(crtc->mode.hdisplay),
	154	cpu_to_le32(crtc->mode.vdisplay),
	155	0, 0, NULL);
	156	}
	157	virtio_gpu_cmd_set_scanout(vgdev, output->index, handle,
	158	crtc->mode.hdisplay,
	159	crtc->mode.vdisplay, 0, 0);
	160	virtio_gpu_cmd_resource_flush(vgdev, handle, 0, 0,
	161	crtc->mode.hdisplay,
	162	crtc->mode.vdisplay);
	163
	164	if (event) {
	165	spin_lock_irqsave(&crtc->dev->event_lock, irqflags);
	166	drm_send_vblank_event(crtc->dev, -1, event);
	167	spin_unlock_irqrestore(&crtc->dev->event_lock, irqflags);
	168	}
	169
	170	return 0;
	171	}
	172
dc5698e8 DA	173	static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
	174	.cursor_set2 = virtio_gpu_crtc_cursor_set,
	175	.cursor_move = virtio_gpu_crtc_cursor_move,
	176	.gamma_set = virtio_gpu_crtc_gamma_set,
	177	.set_config = drm_atomic_helper_set_config,
	178	.destroy = drm_crtc_cleanup,
	179
d24796a4	180	.page_flip = virtio_gpu_page_flip,
dc5698e8 DA	181	.reset = drm_atomic_helper_crtc_reset,
	182	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
	183	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
	184	};
	185
	186	static void virtio_gpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
	187	{
	188	struct virtio_gpu_framebuffer *virtio_gpu_fb
	189	= to_virtio_gpu_framebuffer(fb);
	190
	191	if (virtio_gpu_fb->obj)
	192	drm_gem_object_unreference_unlocked(virtio_gpu_fb->obj);
	193	drm_framebuffer_cleanup(fb);
	194	kfree(virtio_gpu_fb);
	195	}
	196
	197	static int
	198	virtio_gpu_framebuffer_surface_dirty(struct drm_framebuffer *fb,
	199	struct drm_file *file_priv,
	200	unsigned flags, unsigned color,
	201	struct drm_clip_rect *clips,
	202	unsigned num_clips)
	203	{
	204	struct virtio_gpu_framebuffer *virtio_gpu_fb
	205	= to_virtio_gpu_framebuffer(fb);
	206
	207	return virtio_gpu_surface_dirty(virtio_gpu_fb, clips, num_clips);
	208	}
	209
	210	static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = {
	211	.destroy = virtio_gpu_user_framebuffer_destroy,
	212	.dirty = virtio_gpu_framebuffer_surface_dirty,
	213	};
	214
	215	int
	216	virtio_gpu_framebuffer_init(struct drm_device *dev,
	217	struct virtio_gpu_framebuffer *vgfb,
1eb83451	218	const struct drm_mode_fb_cmd2 *mode_cmd,
dc5698e8 DA	219	struct drm_gem_object *obj)
	220	{
	221	int ret;
	222	struct virtio_gpu_object *bo;
	223	vgfb->obj = obj;
	224
	225	bo = gem_to_virtio_gpu_obj(obj);
	226
	227	ret = drm_framebuffer_init(dev, &vgfb->base, &virtio_gpu_fb_funcs);
	228	if (ret) {
	229	vgfb->obj = NULL;
	230	return ret;
	231	}
	232	drm_helper_mode_fill_fb_struct(&vgfb->base, mode_cmd);
	233
	234	spin_lock_init(&vgfb->dirty_lock);
	235	vgfb->x1 = vgfb->y1 = INT_MAX;
	236	vgfb->x2 = vgfb->y2 = 0;
	237	return 0;
	238	}
	239
dc5698e8 DA	240	static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc)
	241	{
	242	struct drm_device *dev = crtc->dev;
	243	struct virtio_gpu_device *vgdev = dev->dev_private;
	244	struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
	245
	246	virtio_gpu_cmd_set_scanout(vgdev, output->index, 0,
	247	crtc->mode.hdisplay,
	248	crtc->mode.vdisplay, 0, 0);
	249	}
	250
	251	static void virtio_gpu_crtc_enable(struct drm_crtc *crtc)
	252	{
	253	}
	254
	255	static void virtio_gpu_crtc_disable(struct drm_crtc *crtc)
	256	{
	257	struct drm_device *dev = crtc->dev;
	258	struct virtio_gpu_device *vgdev = dev->dev_private;
	259	struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
	260
	261	virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 0, 0, 0, 0);
	262	}
	263
	264	static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc,
	265	struct drm_crtc_state *state)
	266	{
	267	return 0;
	268	}
	269
	270	static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
	271	.enable = virtio_gpu_crtc_enable,
	272	.disable = virtio_gpu_crtc_disable,
dc5698e8 DA	273	.mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
	274	.atomic_check = virtio_gpu_crtc_atomic_check,
	275	};
	276
dc5698e8 DA	277	static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
	278	struct drm_display_mode *mode,
	279	struct drm_display_mode *adjusted_mode)
	280	{
	281	}
	282
	283	static void virtio_gpu_enc_enable(struct drm_encoder *encoder)
	284	{
	285	}
	286
	287	static void virtio_gpu_enc_disable(struct drm_encoder *encoder)
	288	{
	289	}
	290
	291	static int virtio_gpu_conn_get_modes(struct drm_connector *connector)
	292	{
	293	struct virtio_gpu_output *output =
	294	drm_connector_to_virtio_gpu_output(connector);
	295	struct drm_display_mode *mode = NULL;
	296	int count, width, height;
	297
	298	width = le32_to_cpu(output->info.r.width);
	299	height = le32_to_cpu(output->info.r.height);
	300	count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
	301
	302	if (width == 0 \|\| height == 0) {
	303	width = XRES_DEF;
	304	height = YRES_DEF;
	305	drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
	306	} else {
	307	DRM_DEBUG("add mode: %dx%d\n", width, height);
	308	mode = drm_cvt_mode(connector->dev, width, height, 60,
	309	false, false, false);
	310	mode->type \|= DRM_MODE_TYPE_PREFERRED;
	311	drm_mode_probed_add(connector, mode);
	312	count++;
	313	}
	314
	315	return count;
	316	}
	317
	318	static int virtio_gpu_conn_mode_valid(struct drm_connector *connector,
	319	struct drm_display_mode *mode)
	320	{
	321	struct virtio_gpu_output *output =
	322	drm_connector_to_virtio_gpu_output(connector);
	323	int width, height;
	324
	325	width = le32_to_cpu(output->info.r.width);
	326	height = le32_to_cpu(output->info.r.height);
	327
	328	if (!(mode->type & DRM_MODE_TYPE_PREFERRED))
	329	return MODE_OK;
	330	if (mode->hdisplay == XRES_DEF && mode->vdisplay == YRES_DEF)
	331	return MODE_OK;
	332	if (mode->hdisplay <= width && mode->hdisplay >= width - 16 &&
	333	mode->vdisplay <= height && mode->vdisplay >= height - 16)
	334	return MODE_OK;
	335
	336	DRM_DEBUG("del mode: %dx%d\n", mode->hdisplay, mode->vdisplay);
	337	return MODE_BAD;
	338	}
	339
	340	static struct drm_encoder*
341	virtio_gpu_best_encoder(struct drm_connector *connector)
342	{
343	struct virtio_gpu_output *virtio_gpu_output =
344	drm_connector_to_virtio_gpu_output(connector);
345
346	return &virtio_gpu_output->enc;
347	}
348
349	static const struct drm_encoder_helper_funcs virtio_gpu_enc_helper_funcs = {
dc5698e8 DA	350	.mode_set = virtio_gpu_enc_mode_set,
	351	.enable = virtio_gpu_enc_enable,
	352	.disable = virtio_gpu_enc_disable,
	353	};
	354
	355	static const struct drm_connector_helper_funcs virtio_gpu_conn_helper_funcs = {
	356	.get_modes = virtio_gpu_conn_get_modes,
	357	.mode_valid = virtio_gpu_conn_mode_valid,
	358	.best_encoder = virtio_gpu_best_encoder,
	359	};
	360
dc5698e8 DA	361	static enum drm_connector_status virtio_gpu_conn_detect(
	362	struct drm_connector *connector,
	363	bool force)
	364	{
	365	struct virtio_gpu_output *output =
	366	drm_connector_to_virtio_gpu_output(connector);
	367
	368	if (output->info.enabled)
	369	return connector_status_connected;
	370	else
	371	return connector_status_disconnected;
	372	}
	373
	374	static void virtio_gpu_conn_destroy(struct drm_connector *connector)
	375	{
	376	struct virtio_gpu_output *virtio_gpu_output =
	377	drm_connector_to_virtio_gpu_output(connector);
	378
	379	drm_connector_unregister(connector);
	380	drm_connector_cleanup(connector);
	381	kfree(virtio_gpu_output);
	382	}
	383
	384	static const struct drm_connector_funcs virtio_gpu_connector_funcs = {
	385	.dpms = drm_atomic_helper_connector_dpms,
dc5698e8	386	.detect = virtio_gpu_conn_detect,
6af3e656	387	.fill_modes = drm_helper_probe_single_connector_modes,
dc5698e8 DA	388	.destroy = virtio_gpu_conn_destroy,
	389	.reset = drm_atomic_helper_connector_reset,
	390	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
	391	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
	392	};
	393
	394	static const struct drm_encoder_funcs virtio_gpu_enc_funcs = {
	395	.destroy = drm_encoder_cleanup,
	396	};
	397
	398	static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index)
	399	{
	400	struct drm_device *dev = vgdev->ddev;
	401	struct virtio_gpu_output *output = vgdev->outputs + index;
	402	struct drm_connector *connector = &output->conn;
	403	struct drm_encoder *encoder = &output->enc;
	404	struct drm_crtc *crtc = &output->crtc;
	405	struct drm_plane *plane;
	406
	407	output->index = index;
	408	if (index == 0) {
	409	output->info.enabled = cpu_to_le32(true);
	410	output->info.r.width = cpu_to_le32(XRES_DEF);
	411	output->info.r.height = cpu_to_le32(YRES_DEF);
	412	}
	413
	414	plane = virtio_gpu_plane_init(vgdev, index);
	415	if (IS_ERR(plane))
	416	return PTR_ERR(plane);
	417	drm_crtc_init_with_planes(dev, crtc, plane, NULL,
f9882876	418	&virtio_gpu_crtc_funcs, NULL);
dc5698e8 DA	419	drm_mode_crtc_set_gamma_size(crtc, 256);
	420	drm_crtc_helper_add(crtc, &virtio_gpu_crtc_helper_funcs);
	421	plane->crtc = crtc;
	422
	423	drm_connector_init(dev, connector, &virtio_gpu_connector_funcs,
	424	DRM_MODE_CONNECTOR_VIRTUAL);
	425	drm_connector_helper_add(connector, &virtio_gpu_conn_helper_funcs);
	426
	427	drm_encoder_init(dev, encoder, &virtio_gpu_enc_funcs,
13a3d91f	428	DRM_MODE_ENCODER_VIRTUAL, NULL);
dc5698e8 DA	429	drm_encoder_helper_add(encoder, &virtio_gpu_enc_helper_funcs);
	430	encoder->possible_crtcs = 1 << index;
	431
	432	drm_mode_connector_attach_encoder(connector, encoder);
	433	drm_connector_register(connector);
	434	return 0;
	435	}
	436
	437	static struct drm_framebuffer *
	438	virtio_gpu_user_framebuffer_create(struct drm_device *dev,
	439	struct drm_file *file_priv,
1eb83451	440	const struct drm_mode_fb_cmd2 *mode_cmd)
dc5698e8 DA	441	{
	442	struct drm_gem_object *obj = NULL;
	443	struct virtio_gpu_framebuffer *virtio_gpu_fb;
	444	int ret;
	445
	446	/* lookup object associated with res handle */
	447	obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
	448	if (!obj)
	449	return ERR_PTR(-EINVAL);
	450
	451	virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL);
	452	if (virtio_gpu_fb == NULL)
	453	return ERR_PTR(-ENOMEM);
	454
	455	ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
	456	if (ret) {
	457	kfree(virtio_gpu_fb);
	458	if (obj)
	459	drm_gem_object_unreference_unlocked(obj);
	460	return NULL;
	461	}
	462
	463	return &virtio_gpu_fb->base;
	464	}
	465
	466	static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
	467	.fb_create = virtio_gpu_user_framebuffer_create,
	468	.atomic_check = drm_atomic_helper_check,
	469	.atomic_commit = drm_atomic_helper_commit,
	470	};
	471
	472	int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
	473	{
	474	int i;
	475
	476	drm_mode_config_init(vgdev->ddev);
	477	vgdev->ddev->mode_config.funcs = (void *)&virtio_gpu_mode_funcs;
	478
	479	/* modes will be validated against the framebuffer size */
	480	vgdev->ddev->mode_config.min_width = XRES_MIN;
	481	vgdev->ddev->mode_config.min_height = YRES_MIN;
	482	vgdev->ddev->mode_config.max_width = XRES_MAX;
	483	vgdev->ddev->mode_config.max_height = YRES_MAX;
	484
	485	for (i = 0 ; i < vgdev->num_scanouts; ++i)
	486	vgdev_output_init(vgdev, i);
	487
	488	drm_mode_config_reset(vgdev->ddev);
	489	return 0;
	490	}
	491
	492	void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
	493	{
	494	virtio_gpu_fbdev_fini(vgdev);
	495	drm_mode_config_cleanup(vgdev->ddev);
	496	}