drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

/**************************************************************************
 *
 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
 * All Rights Reserved.
 *
 * 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, sub license, 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 (including the
 * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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 "vmwgfx_kms.h"


/* Might need a hrtimer here? */
#define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)

static int vmw_surface_dmabuf_pin(struct vmw_framebuffer *vfb);
static int vmw_surface_dmabuf_unpin(struct vmw_framebuffer *vfb);

void vmw_display_unit_cleanup(struct vmw_display_unit *du)
{
	if (du->cursor_surface)
		vmw_surface_unreference(&du->cursor_surface);
	if (du->cursor_dmabuf)
		vmw_dmabuf_unreference(&du->cursor_dmabuf);
	drm_crtc_cleanup(&du->crtc);
	drm_encoder_cleanup(&du->encoder);
	drm_connector_cleanup(&du->connector);
}

/*
 * Display Unit Cursor functions
 */

int vmw_cursor_update_image(struct vmw_private *dev_priv,
			    u32 *image, u32 width, u32 height,
			    u32 hotspotX, u32 hotspotY)
{
	struct {
		u32 cmd;
		SVGAFifoCmdDefineAlphaCursor cursor;
	} *cmd;
	u32 image_size = width * height * 4;
	u32 cmd_size = sizeof(*cmd) + image_size;

	if (!image)
		return -EINVAL;

	cmd = vmw_fifo_reserve(dev_priv, cmd_size);
	if (unlikely(cmd == NULL)) {
		DRM_ERROR("Fifo reserve failed.\n");
		return -ENOMEM;
	}

	memset(cmd, 0, sizeof(*cmd));

	memcpy(&cmd[1], image, image_size);

	cmd->cmd = cpu_to_le32(SVGA_CMD_DEFINE_ALPHA_CURSOR);
	cmd->cursor.id = cpu_to_le32(0);
	cmd->cursor.width = cpu_to_le32(width);
	cmd->cursor.height = cpu_to_le32(height);
	cmd->cursor.hotspotX = cpu_to_le32(hotspotX);
	cmd->cursor.hotspotY = cpu_to_le32(hotspotY);

	vmw_fifo_commit(dev_priv, cmd_size);

	return 0;
}

void vmw_cursor_update_position(struct vmw_private *dev_priv,
				bool show, int x, int y)
{
	__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
	uint32_t count;

	iowrite32(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
	iowrite32(x, fifo_mem + SVGA_FIFO_CURSOR_X);
	iowrite32(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
	count = ioread32(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
	iowrite32(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
}

int vmw_du_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
			   uint32_t handle, uint32_t width, uint32_t height)
{
	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
	struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
	struct vmw_surface *surface = NULL;
	struct vmw_dma_buffer *dmabuf = NULL;
	int ret;

	if (handle) {
		ret = vmw_user_surface_lookup_handle(dev_priv, tfile,
						     handle, &surface);
		if (!ret) {
			if (!surface->snooper.image) {
				DRM_ERROR("surface not suitable for cursor\n");
				return -EINVAL;
			}
		} else {
			ret = vmw_user_dmabuf_lookup(tfile,
						     handle, &dmabuf);
			if (ret) {
				DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
				return -EINVAL;
			}
		}
	}

	/* takedown old cursor */
	if (du->cursor_surface) {
		du->cursor_surface->snooper.crtc = NULL;
		vmw_surface_unreference(&du->cursor_surface);
	}
	if (du->cursor_dmabuf)
		vmw_dmabuf_unreference(&du->cursor_dmabuf);

	/* setup new image */
	if (surface) {
		/* vmw_user_surface_lookup takes one reference */
		du->cursor_surface = surface;

		du->cursor_surface->snooper.crtc = crtc;
		du->cursor_age = du->cursor_surface->snooper.age;
		vmw_cursor_update_image(dev_priv, surface->snooper.image,
					64, 64, du->hotspot_x, du->hotspot_y);
	} else if (dmabuf) {
		struct ttm_bo_kmap_obj map;
		unsigned long kmap_offset;
		unsigned long kmap_num;
		void *virtual;
		bool dummy;

		/* vmw_user_surface_lookup takes one reference */
		du->cursor_dmabuf = dmabuf;

		kmap_offset = 0;
		kmap_num = (64*64*4) >> PAGE_SHIFT;

		ret = ttm_bo_reserve(&dmabuf->base, true, false, false, 0);
		if (unlikely(ret != 0)) {
			DRM_ERROR("reserve failed\n");
			return -EINVAL;
		}

		ret = ttm_bo_kmap(&dmabuf->base, kmap_offset, kmap_num, &map);
		if (unlikely(ret != 0))
			goto err_unreserve;

		virtual = ttm_kmap_obj_virtual(&map, &dummy);
		vmw_cursor_update_image(dev_priv, virtual, 64, 64,
					du->hotspot_x, du->hotspot_y);

		ttm_bo_kunmap(&map);
err_unreserve:
		ttm_bo_unreserve(&dmabuf->base);

	} else {
		vmw_cursor_update_position(dev_priv, false, 0, 0);
		return 0;
	}

	vmw_cursor_update_position(dev_priv, true, du->cursor_x, du->cursor_y);

	return 0;
}

int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
{
	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
	bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;

	du->cursor_x = x + crtc->x;
	du->cursor_y = y + crtc->y;

	vmw_cursor_update_position(dev_priv, shown,
				   du->cursor_x, du->cursor_y);

	return 0;
}

void vmw_kms_cursor_snoop(struct vmw_surface *srf,
			  struct ttm_object_file *tfile,
			  struct ttm_buffer_object *bo,
			  SVGA3dCmdHeader *header)
{
	struct ttm_bo_kmap_obj map;
	unsigned long kmap_offset;
	unsigned long kmap_num;
	SVGA3dCopyBox *box;
	unsigned box_count;
	void *virtual;
	bool dummy;
	struct vmw_dma_cmd {
		SVGA3dCmdHeader header;
		SVGA3dCmdSurfaceDMA dma;
	} *cmd;
	int ret;

	cmd = container_of(header, struct vmw_dma_cmd, header);

	/* No snooper installed */
	if (!srf->snooper.image)
		return;

	if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
		DRM_ERROR("face and mipmap for cursors should never != 0\n");
		return;
	}

	if (cmd->header.size < 64) {
		DRM_ERROR("at least one full copy box must be given\n");
		return;
	}

	box = (SVGA3dCopyBox *)&cmd[1];
	box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
			sizeof(SVGA3dCopyBox);

	if (cmd->dma.guest.pitch != (64 * 4) ||
	    cmd->dma.guest.ptr.offset % PAGE_SIZE ||
	    box->x != 0    || box->y != 0    || box->z != 0    ||
	    box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
	    box->w != 64   || box->h != 64   || box->d != 1    ||
	    box_count != 1) {
		/* TODO handle none page aligned offsets */
		/* TODO handle partial uploads and pitch != 256 */
		/* TODO handle more then one copy (size != 64) */
		DRM_ERROR("lazy programmer, can't handle weird stuff\n");
		return;
	}

	kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
	kmap_num = (64*64*4) >> PAGE_SHIFT;

	ret = ttm_bo_reserve(bo, true, false, false, 0);
	if (unlikely(ret != 0)) {
		DRM_ERROR("reserve failed\n");
		return;
	}

	ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
	if (unlikely(ret != 0))
		goto err_unreserve;

	virtual = ttm_kmap_obj_virtual(&map, &dummy);

	memcpy(srf->snooper.image, virtual, 64*64*4);
	srf->snooper.age++;

	/* we can't call this function from this function since execbuf has
	 * reserved fifo space.
	 *
	 * if (srf->snooper.crtc)
	 *	vmw_ldu_crtc_cursor_update_image(dev_priv,
	 *					 srf->snooper.image, 64, 64,
	 *					 du->hotspot_x, du->hotspot_y);
	 */

	ttm_bo_kunmap(&map);
err_unreserve:
	ttm_bo_unreserve(bo);
}

void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
{
	struct drm_device *dev = dev_priv->dev;
	struct vmw_display_unit *du;
	struct drm_crtc *crtc;

	mutex_lock(&dev->mode_config.mutex);

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
		du = vmw_crtc_to_du(crtc);
		if (!du->cursor_surface ||
		    du->cursor_age == du->cursor_surface->snooper.age)
			continue;

		du->cursor_age = du->cursor_surface->snooper.age;
		vmw_cursor_update_image(dev_priv,
					du->cursor_surface->snooper.image,
					64, 64, du->hotspot_x, du->hotspot_y);
	}

	mutex_unlock(&dev->mode_config.mutex);
}

/*
 * Generic framebuffer code
 */

int vmw_framebuffer_create_handle(struct drm_framebuffer *fb,
				  struct drm_file *file_priv,
				  unsigned int *handle)
{
	if (handle)
		handle = 0;

	return 0;
}

/*
 * Surface framebuffer code
 */

#define vmw_framebuffer_to_vfbs(x) \
	container_of(x, struct vmw_framebuffer_surface, base.base)

struct vmw_framebuffer_surface {
	struct vmw_framebuffer base;
	struct vmw_surface *surface;
	struct vmw_dma_buffer *buffer;
	struct delayed_work d_work;
	struct mutex work_lock;
	bool present_fs;
	struct list_head head;
	struct drm_master *master;
};

/**
 * vmw_kms_idle_workqueues - Flush workqueues on this master
 *
 * @vmaster - Pointer identifying the master, for the surfaces of which
 * we idle the dirty work queues.
 *
 * This function should be called with the ttm lock held in exclusive mode
 * to idle all dirty work queues before the fifo is taken down.
 *
 * The work task may actually requeue itself, but after the flush returns we're
 * sure that there's nothing to present, since the ttm lock is held in
 * exclusive mode, so the fifo will never get used.
 */

void vmw_kms_idle_workqueues(struct vmw_master *vmaster)
{
	struct vmw_framebuffer_surface *entry;

	mutex_lock(&vmaster->fb_surf_mutex);
	list_for_each_entry(entry, &vmaster->fb_surf, head) {
		if (cancel_delayed_work_sync(&entry->d_work))
			(void) entry->d_work.work.func(&entry->d_work.work);

		(void) cancel_delayed_work_sync(&entry->d_work);
	}
	mutex_unlock(&vmaster->fb_surf_mutex);
}

void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
{
	struct vmw_framebuffer_surface *vfbs =
		vmw_framebuffer_to_vfbs(framebuffer);
	struct vmw_master *vmaster = vmw_master(vfbs->master);


	mutex_lock(&vmaster->fb_surf_mutex);
	list_del(&vfbs->head);
	mutex_unlock(&vmaster->fb_surf_mutex);

	cancel_delayed_work_sync(&vfbs->d_work);
	drm_master_put(&vfbs->master);
	drm_framebuffer_cleanup(framebuffer);
	vmw_surface_unreference(&vfbs->surface);

	kfree(vfbs);
}

static void vmw_framebuffer_present_fs_callback(struct work_struct *work)
{
	struct delayed_work *d_work =
		container_of(work, struct delayed_work, work);
	struct vmw_framebuffer_surface *vfbs =
		container_of(d_work, struct vmw_framebuffer_surface, d_work);
	struct vmw_surface *surf = vfbs->surface;
	struct drm_framebuffer *framebuffer = &vfbs->base.base;
	struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);

	struct {
		SVGA3dCmdHeader header;
		SVGA3dCmdPresent body;
		SVGA3dCopyRect cr;
	} *cmd;

	/**
	 * Strictly we should take the ttm_lock in read mode before accessing
	 * the fifo, to make sure the fifo is present and up. However,
	 * instead we flush all workqueues under the ttm lock in exclusive mode
	 * before taking down the fifo.
	 */
	mutex_lock(&vfbs->work_lock);
	if (!vfbs->present_fs)
		goto out_unlock;

	cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
	if (unlikely(cmd == NULL))
		goto out_resched;

	cmd->header.id = cpu_to_le32(SVGA_3D_CMD_PRESENT);
	cmd->header.size = cpu_to_le32(sizeof(cmd->body) + sizeof(cmd->cr));
	cmd->body.sid = cpu_to_le32(surf->res.id);
	cmd->cr.x = cpu_to_le32(0);
	cmd->cr.y = cpu_to_le32(0);
	cmd->cr.srcx = cmd->cr.x;
	cmd->cr.srcy = cmd->cr.y;
	cmd->cr.w = cpu_to_le32(framebuffer->width);
	cmd->cr.h = cpu_to_le32(framebuffer->height);
	vfbs->present_fs = false;
	vmw_fifo_commit(dev_priv, sizeof(*cmd));
out_resched:
	/**
	 * Will not re-add if already pending.
	 */
	schedule_delayed_work(&vfbs->d_work, VMWGFX_PRESENT_RATE);
out_unlock:
	mutex_unlock(&vfbs->work_lock);
}

static int do_surface_dirty_ldu(struct vmw_private *dev_priv,
				struct vmw_framebuffer *framebuffer,
				struct vmw_surface *surf,
				unsigned flags, unsigned color,
				struct drm_clip_rect *clips,
				unsigned num_clips, int inc)
{
	SVGA3dCopyRect *cr;
	int i;

	struct {
		SVGA3dCmdHeader header;
		SVGA3dCmdPresent body;
		SVGA3dCopyRect cr;
	} *cmd;

	cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) + (num_clips - 1) *
			       sizeof(cmd->cr));
	if (unlikely(cmd == NULL)) {
		DRM_ERROR("Fifo reserve failed.\n");
		return -ENOMEM;
	}

	memset(cmd, 0, sizeof(*cmd));

	cmd->header.id = cpu_to_le32(SVGA_3D_CMD_PRESENT);
	cmd->header.size = cpu_to_le32(sizeof(cmd->body) + num_clips *
				       sizeof(cmd->cr));
	cmd->body.sid = cpu_to_le32(surf->res.id);

	for (i = 0, cr = &cmd->cr; i < num_clips; i++, cr++, clips += inc) {
		cr->x = cpu_to_le16(clips->x1);
		cr->y = cpu_to_le16(clips->y1);
		cr->srcx = cr->x;
		cr->srcy = cr->y;
		cr->w = cpu_to_le16(clips->x2 - clips->x1);
		cr->h = cpu_to_le16(clips->y2 - clips->y1);
	}

	vmw_fifo_commit(dev_priv, sizeof(*cmd) + (num_clips - 1) *
			sizeof(cmd->cr));

	return 0;
}

static int do_surface_dirty_sou(struct vmw_private *dev_priv,
				struct vmw_framebuffer *framebuffer,
				struct vmw_surface *surf,
				unsigned flags, unsigned color,
				struct drm_clip_rect *clips,
				unsigned num_clips, int inc)
{
	int left = clips->x2, right = clips->x1;
	int top = clips->y2, bottom = clips->y1;
	size_t fifo_size;
	int i;

	struct {
		SVGA3dCmdHeader header;
		SVGA3dCmdBlitSurfaceToScreen body;
	} *cmd;


	fifo_size = sizeof(*cmd);
	cmd = vmw_fifo_reserve(dev_priv, fifo_size);
	if (unlikely(cmd == NULL)) {
		DRM_ERROR("Fifo reserve failed.\n");
		return -ENOMEM;
	}

	memset(cmd, 0, fifo_size);

	cmd->header.id = cpu_to_le32(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN);
	cmd->header.size = cpu_to_le32(sizeof(cmd->body));

	cmd->body.srcImage.sid = cpu_to_le32(surf->res.id);
	cmd->body.destScreenId = SVGA_ID_INVALID; /* virtual coords */

	for (i = 0; i < num_clips; i++, clips += inc) {
		left = min_t(int, left, (int)clips->x1);
		right = max_t(int, right, (int)clips->x2);
		top = min_t(int, top, (int)clips->y1);
		bottom = max_t(int, bottom, (int)clips->y2);
	}

	cmd->body.srcRect.left = left;
	cmd->body.srcRect.right = right;
	cmd->body.srcRect.top = top;
	cmd->body.srcRect.bottom = bottom;

	cmd->body.destRect.left = left;
	cmd->body.destRect.right = right;
	cmd->body.destRect.top = top;
	cmd->body.destRect.bottom = bottom;

	vmw_fifo_commit(dev_priv, fifo_size);

	return 0;
}

int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
				  struct drm_file *file_priv,
				  unsigned flags, unsigned color,
				  struct drm_clip_rect *clips,
				  unsigned num_clips)
{
	struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
	struct vmw_master *vmaster = vmw_master(file_priv->master);
	struct vmw_framebuffer_surface *vfbs =
		vmw_framebuffer_to_vfbs(framebuffer);
	struct vmw_surface *surf = vfbs->surface;
	struct drm_clip_rect norect;
	int ret, inc = 1;

	if (unlikely(vfbs->master != file_priv->master))
		return -EINVAL;

	ret = ttm_read_lock(&vmaster->lock, true);
	if (unlikely(ret != 0))
		return ret;

	/* Are we using screen objects? */
	if (!dev_priv->sou_priv) {
		int ret;

		mutex_lock(&vfbs->work_lock);
		vfbs->present_fs = true;
		ret = schedule_delayed_work(&vfbs->d_work, VMWGFX_PRESENT_RATE);
		mutex_unlock(&vfbs->work_lock);
		if (ret) {
			/**
			 * No work pending, Force immediate present.
			 */
			vmw_framebuffer_present_fs_callback(&vfbs->d_work.work);
		}
		ttm_read_unlock(&vmaster->lock);
		return 0;
	}

	if (!num_clips) {
		num_clips = 1;
		clips = &norect;
		norect.x1 = norect.y1 = 0;
		norect.x2 = framebuffer->width;
		norect.y2 = framebuffer->height;
	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
		num_clips /= 2;
		inc = 2; /* skip source rects */
	}

	if (!dev_priv->sou_priv)
		ret = do_surface_dirty_ldu(dev_priv, &vfbs->base, surf,
					   flags, color,
					   clips, num_clips, inc);
	else
		ret = do_surface_dirty_sou(dev_priv, &vfbs->base, surf,
					   flags, color,
					   clips, num_clips, inc);

	ttm_read_unlock(&vmaster->lock);
	return 0;
}

static struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
	.destroy = vmw_framebuffer_surface_destroy,
	.dirty = vmw_framebuffer_surface_dirty,
	.create_handle = vmw_framebuffer_create_handle,
};

static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
					   struct drm_file *file_priv,
					   struct vmw_surface *surface,
					   struct vmw_framebuffer **out,
					   const struct drm_mode_fb_cmd
					   *mode_cmd)

{
	struct drm_device *dev = dev_priv->dev;
	struct vmw_framebuffer_surface *vfbs;
	enum SVGA3dSurfaceFormat format;
	struct vmw_master *vmaster = vmw_master(file_priv->master);
	int ret;

	/*
	 * Sanity checks.
	 */

	if (unlikely(surface->mip_levels[0] != 1 ||
		     surface->num_sizes != 1 ||
		     surface->sizes[0].width < mode_cmd->width ||
		     surface->sizes[0].height < mode_cmd->height ||
		     surface->sizes[0].depth != 1)) {
		DRM_ERROR("Incompatible surface dimensions "
			  "for requested mode.\n");
		return -EINVAL;
	}

	switch (mode_cmd->depth) {
	case 32:
		format = SVGA3D_A8R8G8B8;
		break;
	case 24:
		format = SVGA3D_X8R8G8B8;
		break;
	case 16:
		format = SVGA3D_R5G6B5;
		break;
	case 15:
		format = SVGA3D_A1R5G5B5;
		break;
	case 8:
		format = SVGA3D_LUMINANCE8;
		break;
	default:
		DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
		return -EINVAL;
	}

	if (unlikely(format != surface->format)) {
		DRM_ERROR("Invalid surface format for requested mode.\n");
		return -EINVAL;
	}

	vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
	if (!vfbs) {
		ret = -ENOMEM;
		goto out_err1;
	}

	ret = drm_framebuffer_init(dev, &vfbs->base.base,
				   &vmw_framebuffer_surface_funcs);
	if (ret)
		goto out_err2;

	if (!vmw_surface_reference(surface)) {
		DRM_ERROR("failed to reference surface %p\n", surface);
		goto out_err3;
	}

	/* XXX get the first 3 from the surface info */
	vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
	vfbs->base.base.pitch = mode_cmd->pitch;
	vfbs->base.base.depth = mode_cmd->depth;
	vfbs->base.base.width = mode_cmd->width;
	vfbs->base.base.height = mode_cmd->height;
	/* Don't need to fill start of vram with empty
	 * buffer if we have screen objects support.
	 */
	if (!dev_priv->sou_priv) {
		vfbs->base.pin = &vmw_surface_dmabuf_pin;
		vfbs->base.unpin = &vmw_surface_dmabuf_unpin;
	}
	vfbs->surface = surface;
	vfbs->master = drm_master_get(file_priv->master);
	mutex_init(&vfbs->work_lock);

	mutex_lock(&vmaster->fb_surf_mutex);
	INIT_DELAYED_WORK(&vfbs->d_work, &vmw_framebuffer_present_fs_callback);
	list_add_tail(&vfbs->head, &vmaster->fb_surf);
	mutex_unlock(&vmaster->fb_surf_mutex);

	*out = &vfbs->base;

	return 0;

out_err3:
	drm_framebuffer_cleanup(&vfbs->base.base);
out_err2:
	kfree(vfbs);
out_err1:
	return ret;
}

/*
 * Dmabuf framebuffer code
 */

#define vmw_framebuffer_to_vfbd(x) \
	container_of(x, struct vmw_framebuffer_dmabuf, base.base)

struct vmw_framebuffer_dmabuf {
	struct vmw_framebuffer base;
	struct vmw_dma_buffer *buffer;
	uint32_t handle;
};

void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
{
	struct vmw_framebuffer_dmabuf *vfbd =
		vmw_framebuffer_to_vfbd(framebuffer);

	drm_framebuffer_cleanup(framebuffer);
	vmw_dmabuf_unreference(&vfbd->buffer);

	kfree(vfbd);
}

static int do_dmabuf_dirty_ldu(struct vmw_private *dev_priv,
			       struct vmw_framebuffer *framebuffer,
			       struct vmw_dma_buffer *buffer,
			       unsigned flags, unsigned color,
			       struct drm_clip_rect *clips,
			       unsigned num_clips, int increment)
{
	size_t fifo_size;
	int i;

	struct {
		uint32_t header;
		SVGAFifoCmdUpdate body;
	} *cmd;

	fifo_size = sizeof(*cmd) * num_clips;
	cmd = vmw_fifo_reserve(dev_priv, fifo_size);
	if (unlikely(cmd == NULL)) {
		DRM_ERROR("Fifo reserve failed.\n");
		return -ENOMEM;
	}

	memset(cmd, 0, fifo_size);
	for (i = 0; i < num_clips; i++, clips += increment) {
		cmd[i].header = cpu_to_le32(SVGA_CMD_UPDATE);
		cmd[i].body.x = cpu_to_le32(clips->x1);
		cmd[i].body.y = cpu_to_le32(clips->y1);
		cmd[i].body.width = cpu_to_le32(clips->x2 - clips->x1);
		cmd[i].body.height = cpu_to_le32(clips->y2 - clips->y1);
	}

	vmw_fifo_commit(dev_priv, fifo_size);
	return 0;
}

static int do_dmabuf_dirty_sou(struct drm_file *file_priv,
			       struct vmw_private *dev_priv,
			       struct vmw_framebuffer *framebuffer,
			       struct vmw_dma_buffer *buffer,
			       unsigned flags, unsigned color,
			       struct drm_clip_rect *clips,
			       unsigned num_clips, int increment)
{
	struct vmw_framebuffer_dmabuf *vfbd =
		vmw_framebuffer_to_vfbd(&framebuffer->base);
	size_t fifo_size;
	int i, ret;

	struct {
		uint32_t header;
		SVGAFifoCmdDefineGMRFB body;
	} *cmd;
	struct {
		uint32_t header;
		SVGAFifoCmdBlitGMRFBToScreen body;
	} *blits;

	fifo_size = sizeof(*cmd) + sizeof(*blits) * num_clips;
	cmd = kmalloc(fifo_size, GFP_KERNEL);
	if (unlikely(cmd == NULL)) {
		DRM_ERROR("Failed to allocate temporary cmd buffer.\n");
		return -ENOMEM;
	}

	memset(cmd, 0, fifo_size);
	cmd->header = SVGA_CMD_DEFINE_GMRFB;
	cmd->body.format.bitsPerPixel = framebuffer->base.bits_per_pixel;
	cmd->body.format.colorDepth = framebuffer->base.depth;
	cmd->body.format.reserved = 0;
	cmd->body.bytesPerLine = framebuffer->base.pitch;
	cmd->body.ptr.gmrId = vfbd->handle;
	cmd->body.ptr.offset = 0;

	blits = (void *)&cmd[1];
	for (i = 0; i < num_clips; i++, clips += increment) {
		blits[i].header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
		blits[i].body.srcOrigin.x = clips->x1;
		blits[i].body.srcOrigin.y = clips->y1;
		blits[i].body.destRect.left = clips->x1;
		blits[i].body.destRect.top = clips->y1;
		blits[i].body.destRect.right = clips->x2;
		blits[i].body.destRect.bottom = clips->y2;
	}

	ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
				  fifo_size, 0, NULL);

	kfree(cmd);

	return ret;
}

int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
				 struct drm_file *file_priv,
				 unsigned flags, unsigned color,
				 struct drm_clip_rect *clips,
				 unsigned num_clips)
{
	struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
	struct vmw_master *vmaster = vmw_master(file_priv->master);
	struct vmw_framebuffer_dmabuf *vfbd =
		vmw_framebuffer_to_vfbd(framebuffer);
	struct vmw_dma_buffer *dmabuf = vfbd->buffer;
	struct drm_clip_rect norect;
	int ret, increment = 1;

	ret = ttm_read_lock(&vmaster->lock, true);
	if (unlikely(ret != 0))
		return ret;

	if (!num_clips) {
		num_clips = 1;
		clips = &norect;
		norect.x1 = norect.y1 = 0;
		norect.x2 = framebuffer->width;
		norect.y2 = framebuffer->height;
	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
		num_clips /= 2;
		increment = 2;
	}

	if (dev_priv->ldu_priv) {
		ret = do_dmabuf_dirty_ldu(dev_priv, &vfbd->base, dmabuf,
					  flags, color,
					  clips, num_clips, increment);
	} else {
		ret = do_dmabuf_dirty_sou(file_priv, dev_priv, &vfbd->base,
					  dmabuf, flags, color,
					  clips, num_clips, increment);
	}

	ttm_read_unlock(&vmaster->lock);
	return ret;
}

static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
	.destroy = vmw_framebuffer_dmabuf_destroy,
	.dirty = vmw_framebuffer_dmabuf_dirty,
	.create_handle = vmw_framebuffer_create_handle,
};

/**
 * We need to reserve the start of vram because the host might
 * scribble to it at mode changes, so we need to reserve it.
 */
static int vmw_surface_dmabuf_pin(struct vmw_framebuffer *vfb)
{
	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
	struct vmw_framebuffer_surface *vfbs =
		vmw_framebuffer_to_vfbs(&vfb->base);
	unsigned long size = vfbs->base.base.pitch * vfbs->base.base.height;
	int ret;
	struct ttm_placement ne_placement = vmw_vram_ne_placement;

	ne_placement.lpfn = (size + (PAGE_SIZE - 1)) / PAGE_SIZE;

	vfbs->buffer = kzalloc(sizeof(*vfbs->buffer), GFP_KERNEL);
	if (unlikely(vfbs->buffer == NULL))
		return -ENOMEM;

	vmw_overlay_pause_all(dev_priv);
	ret = vmw_dmabuf_init(dev_priv, vfbs->buffer, size,
			       &vmw_vram_ne_placement,
			       false, &vmw_dmabuf_bo_free);
	vmw_overlay_resume_all(dev_priv);
	if (unlikely(ret != 0))
		vfbs->buffer = NULL;

	return ret;
}

/**
 * See vmw_surface_dmabuf_pin.
 */
static int vmw_surface_dmabuf_unpin(struct vmw_framebuffer *vfb)
{
	struct ttm_buffer_object *bo;
	struct vmw_framebuffer_surface *vfbs =
		vmw_framebuffer_to_vfbs(&vfb->base);

	if (unlikely(vfbs->buffer == NULL))
		return 0;

	bo = &vfbs->buffer->base;
	ttm_bo_unref(&bo);
	vfbs->buffer = NULL;

	return 0;
}

/**
 * Pin the dmabuffer to the start of vram.
 */
static int vmw_framebuffer_dmabuf_pin(struct vmw_framebuffer *vfb)
{
	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
	struct vmw_framebuffer_dmabuf *vfbd =
		vmw_framebuffer_to_vfbd(&vfb->base);
	int ret;

	/* This code should not be used with screen objects */
	BUG_ON(dev_priv->sou_priv);

	vmw_overlay_pause_all(dev_priv);

	ret = vmw_dmabuf_to_start_of_vram(dev_priv, vfbd->buffer, true, false);

	vmw_overlay_resume_all(dev_priv);

	WARN_ON(ret != 0);

	return 0;
}

static int vmw_framebuffer_dmabuf_unpin(struct vmw_framebuffer *vfb)
{
	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
	struct vmw_framebuffer_dmabuf *vfbd =
		vmw_framebuffer_to_vfbd(&vfb->base);

	if (!vfbd->buffer) {
		WARN_ON(!vfbd->buffer);
		return 0;
	}

	return vmw_dmabuf_unpin(dev_priv, vfbd->buffer, false);
}

static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
					  struct vmw_dma_buffer *dmabuf,
					  struct vmw_framebuffer **out,
					  const struct drm_mode_fb_cmd
					  *mode_cmd)

{
	struct drm_device *dev = dev_priv->dev;
	struct vmw_framebuffer_dmabuf *vfbd;
	unsigned int requested_size;
	int ret;

	requested_size = mode_cmd->height * mode_cmd->pitch;
	if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
		DRM_ERROR("Screen buffer object size is too small "
			  "for requested mode.\n");
		return -EINVAL;
	}

	vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
	if (!vfbd) {
		ret = -ENOMEM;
		goto out_err1;
	}

	ret = drm_framebuffer_init(dev, &vfbd->base.base,
				   &vmw_framebuffer_dmabuf_funcs);
	if (ret)
		goto out_err2;

	if (!vmw_dmabuf_reference(dmabuf)) {
		DRM_ERROR("failed to reference dmabuf %p\n", dmabuf);
		goto out_err3;
	}

	vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
	vfbd->base.base.pitch = mode_cmd->pitch;
	vfbd->base.base.depth = mode_cmd->depth;
	vfbd->base.base.width = mode_cmd->width;
	vfbd->base.base.height = mode_cmd->height;
	if (!dev_priv->sou_priv) {
		vfbd->base.pin = vmw_framebuffer_dmabuf_pin;
		vfbd->base.unpin = vmw_framebuffer_dmabuf_unpin;
	}
	vfbd->buffer = dmabuf;
	vfbd->handle = mode_cmd->handle;
	*out = &vfbd->base;

	return 0;

out_err3:
	drm_framebuffer_cleanup(&vfbd->base.base);
out_err2:
	kfree(vfbd);
out_err1:
	return ret;
}

/*
 * Generic Kernel modesetting functions
 */

static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
						 struct drm_file *file_priv,
						 struct drm_mode_fb_cmd *mode_cmd)
{
	struct vmw_private *dev_priv = vmw_priv(dev);
	struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
	struct vmw_framebuffer *vfb = NULL;
	struct vmw_surface *surface = NULL;
	struct vmw_dma_buffer *bo = NULL;
	u64 required_size;
	int ret;

	/**
	 * This code should be conditioned on Screen Objects not being used.
	 * If screen objects are used, we can allocate a GMR to hold the
	 * requested framebuffer.
	 */

	required_size = mode_cmd->pitch * mode_cmd->height;
	if (unlikely(required_size > (u64) dev_priv->vram_size)) {
		DRM_ERROR("VRAM size is too small for requested mode.\n");
		return NULL;
	}

	/**
	 * End conditioned code.
	 */

	ret = vmw_user_surface_lookup_handle(dev_priv, tfile,
					     mode_cmd->handle, &surface);
	if (ret)
		goto try_dmabuf;

	if (!surface->scanout)
		goto err_not_scanout;

	ret = vmw_kms_new_framebuffer_surface(dev_priv, file_priv, surface,
					      &vfb, mode_cmd);

	/* vmw_user_surface_lookup takes one ref so does new_fb */
	vmw_surface_unreference(&surface);

	if (ret) {
		DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
		return ERR_PTR(ret);
	}
	return &vfb->base;

try_dmabuf:
	DRM_INFO("%s: trying buffer\n", __func__);

	ret = vmw_user_dmabuf_lookup(tfile, mode_cmd->handle, &bo);
	if (ret) {
		DRM_ERROR("failed to find buffer: %i\n", ret);
		return ERR_PTR(-ENOENT);
	}

	ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, bo, &vfb,
					     mode_cmd);

	/* vmw_user_dmabuf_lookup takes one ref so does new_fb */
	vmw_dmabuf_unreference(&bo);

	if (ret) {
		DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
		return ERR_PTR(ret);
	}

	return &vfb->base;

err_not_scanout:
	DRM_ERROR("surface not marked as scanout\n");
	/* vmw_user_surface_lookup takes one ref */
	vmw_surface_unreference(&surface);

	return ERR_PTR(-EINVAL);
}

static struct drm_mode_config_funcs vmw_kms_funcs = {
	.fb_create = vmw_kms_fb_create,
};

int vmw_kms_init(struct vmw_private *dev_priv)
{
	struct drm_device *dev = dev_priv->dev;
	int ret;

	drm_mode_config_init(dev);
	dev->mode_config.funcs = &vmw_kms_funcs;
	dev->mode_config.min_width = 1;
	dev->mode_config.min_height = 1;
	/* assumed largest fb size */
	dev->mode_config.max_width = 8192;
	dev->mode_config.max_height = 8192;

	ret = vmw_kms_init_screen_object_display(dev_priv);
	if (ret) /* Fallback */
		(void)vmw_kms_init_legacy_display_system(dev_priv);

	return 0;
}

int vmw_kms_close(struct vmw_private *dev_priv)
{
	/*
	 * Docs says we should take the lock before calling this function
	 * but since it destroys encoders and our destructor calls
	 * drm_encoder_cleanup which takes the lock we deadlock.
	 */
	drm_mode_config_cleanup(dev_priv->dev);
	vmw_kms_close_legacy_display_system(dev_priv);
	return 0;
}

int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
				struct drm_file *file_priv)
{
	struct drm_vmw_cursor_bypass_arg *arg = data;
	struct vmw_display_unit *du;
	struct drm_mode_object *obj;
	struct drm_crtc *crtc;
	int ret = 0;


	mutex_lock(&dev->mode_config.mutex);
	if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {

		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
			du = vmw_crtc_to_du(crtc);
			du->hotspot_x = arg->xhot;
			du->hotspot_y = arg->yhot;
		}

		mutex_unlock(&dev->mode_config.mutex);
		return 0;
	}

	obj = drm_mode_object_find(dev, arg->crtc_id, DRM_MODE_OBJECT_CRTC);
	if (!obj) {
		ret = -EINVAL;
		goto out;
	}

	crtc = obj_to_crtc(obj);
	du = vmw_crtc_to_du(crtc);

	du->hotspot_x = arg->xhot;
	du->hotspot_y = arg->yhot;

out:
	mutex_unlock(&dev->mode_config.mutex);

	return ret;
}

int vmw_kms_write_svga(struct vmw_private *vmw_priv,
			unsigned width, unsigned height, unsigned pitch,
			unsigned bpp, unsigned depth)
{
	if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
		vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
	else if (vmw_fifo_have_pitchlock(vmw_priv))
		iowrite32(pitch, vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
	vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
	vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
	vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);

	if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
		DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
			  depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
		return -EINVAL;
	}

	return 0;
}

int vmw_kms_save_vga(struct vmw_private *vmw_priv)
{
	struct vmw_vga_topology_state *save;
	uint32_t i;

	vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
	vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
	vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
	if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
		vmw_priv->vga_pitchlock =
		  vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
	else if (vmw_fifo_have_pitchlock(vmw_priv))
		vmw_priv->vga_pitchlock = ioread32(vmw_priv->mmio_virt +
						       SVGA_FIFO_PITCHLOCK);

	if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
		return 0;

	vmw_priv->num_displays = vmw_read(vmw_priv,
					  SVGA_REG_NUM_GUEST_DISPLAYS);

	if (vmw_priv->num_displays == 0)
		vmw_priv->num_displays = 1;

	for (i = 0; i < vmw_priv->num_displays; ++i) {
		save = &vmw_priv->vga_save[i];
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
		save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
		save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
		save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
		save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
		save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
		if (i == 0 && vmw_priv->num_displays == 1 &&
		    save->width == 0 && save->height == 0) {

			/*
			 * It should be fairly safe to assume that these
			 * values are uninitialized.
			 */

			save->width = vmw_priv->vga_width - save->pos_x;
			save->height = vmw_priv->vga_height - save->pos_y;
		}
	}

	return 0;
}

int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
{
	struct vmw_vga_topology_state *save;
	uint32_t i;

	vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
	vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
	vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
	if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
		vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
			  vmw_priv->vga_pitchlock);
	else if (vmw_fifo_have_pitchlock(vmw_priv))
		iowrite32(vmw_priv->vga_pitchlock,
			  vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);

	if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
		return 0;

	for (i = 0; i < vmw_priv->num_displays; ++i) {
		save = &vmw_priv->vga_save[i];
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
	}

	return 0;
}

bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
				uint32_t pitch,
				uint32_t height)
{
	return ((u64) pitch * (u64) height) < (u64) dev_priv->vram_size;
}

u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc)
{
	return 0;
}


/*
 * Small shared kms functions.
 */

int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
			 struct drm_vmw_rect *rects)
{
	struct drm_device *dev = dev_priv->dev;
	struct vmw_display_unit *du;
	struct drm_connector *con;
	int i;

	mutex_lock(&dev->mode_config.mutex);

#if 0
	DRM_INFO("%s: new layout ", __func__);
	for (i = 0; i < (int)num; i++)
		DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
			 rects[i].w, rects[i].h);
	DRM_INFO("\n");
#else
	(void)i;
#endif

	list_for_each_entry(con, &dev->mode_config.connector_list, head) {
		du = vmw_connector_to_du(con);
		if (num > du->unit) {
			du->pref_width = rects[du->unit].w;
			du->pref_height = rects[du->unit].h;
			du->pref_active = true;
		} else {
			du->pref_width = 800;
			du->pref_height = 600;
			du->pref_active = false;
		}
		con->status = vmw_du_connector_detect(con, true);
	}

	mutex_unlock(&dev->mode_config.mutex);

	return 0;
}

void vmw_du_crtc_save(struct drm_crtc *crtc)
{
}

void vmw_du_crtc_restore(struct drm_crtc *crtc)
{
}

void vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
			   u16 *r, u16 *g, u16 *b,
			   uint32_t start, uint32_t size)
{
	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
	int i;

	for (i = 0; i < size; i++) {
		DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
			  r[i], g[i], b[i]);
		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
	}
}

void vmw_du_connector_dpms(struct drm_connector *connector, int mode)
{
}

void vmw_du_connector_save(struct drm_connector *connector)
{
}

void vmw_du_connector_restore(struct drm_connector *connector)
{
}

enum drm_connector_status
vmw_du_connector_detect(struct drm_connector *connector, bool force)
{
	uint32_t num_displays;
	struct drm_device *dev = connector->dev;
	struct vmw_private *dev_priv = vmw_priv(dev);

	mutex_lock(&dev_priv->hw_mutex);
	num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
	mutex_unlock(&dev_priv->hw_mutex);

	return ((vmw_connector_to_du(connector)->unit < num_displays) ?
		connector_status_connected : connector_status_disconnected);
}

static struct drm_display_mode vmw_kms_connector_builtin[] = {
	/* 640x480@60Hz */
	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
		   752, 800, 0, 480, 489, 492, 525, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
	/* 800x600@60Hz */
	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
		   968, 1056, 0, 600, 601, 605, 628, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1024x768@60Hz */
	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
		   1184, 1344, 0, 768, 771, 777, 806, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
	/* 1152x864@75Hz */
	{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
		   1344, 1600, 0, 864, 865, 868, 900, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1280x768@60Hz */
	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
		   1472, 1664, 0, 768, 771, 778, 798, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1280x800@60Hz */
	{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
		   1480, 1680, 0, 800, 803, 809, 831, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
	/* 1280x960@60Hz */
	{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
		   1488, 1800, 0, 960, 961, 964, 1000, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1280x1024@60Hz */
	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
		   1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1360x768@60Hz */
	{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
		   1536, 1792, 0, 768, 771, 777, 795, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1440x1050@60Hz */
	{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
		   1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1440x900@60Hz */
	{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
		   1672, 1904, 0, 900, 903, 909, 934, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1600x1200@60Hz */
	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
		   1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1680x1050@60Hz */
	{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
		   1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1792x1344@60Hz */
	{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
		   2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1853x1392@60Hz */
	{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
		   2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1920x1200@60Hz */
	{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
		   2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1920x1440@60Hz */
	{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
		   2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 2560x1600@60Hz */
	{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
		   3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* Terminate */
	{ DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
};

int vmw_du_connector_fill_modes(struct drm_connector *connector,
				uint32_t max_width, uint32_t max_height)
{
	struct vmw_display_unit *du = vmw_connector_to_du(connector);
	struct drm_device *dev = connector->dev;
	struct vmw_private *dev_priv = vmw_priv(dev);
	struct drm_display_mode *mode = NULL;
	struct drm_display_mode *bmode;
	struct drm_display_mode prefmode = { DRM_MODE("preferred",
		DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
		DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
	};
	int i;

	/* Add preferred mode */
	{
		mode = drm_mode_duplicate(dev, &prefmode);
		if (!mode)
			return 0;
		mode->hdisplay = du->pref_width;
		mode->vdisplay = du->pref_height;
		mode->vrefresh = drm_mode_vrefresh(mode);
		if (vmw_kms_validate_mode_vram(dev_priv, mode->hdisplay * 2,
					       mode->vdisplay)) {
			drm_mode_probed_add(connector, mode);

			if (du->pref_mode) {
				list_del_init(&du->pref_mode->head);
				drm_mode_destroy(dev, du->pref_mode);
			}

			du->pref_mode = mode;
		}
	}

	for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
		bmode = &vmw_kms_connector_builtin[i];
		if (bmode->hdisplay > max_width ||
		    bmode->vdisplay > max_height)
			continue;

		if (!vmw_kms_validate_mode_vram(dev_priv, bmode->hdisplay * 2,
						bmode->vdisplay))
			continue;

		mode = drm_mode_duplicate(dev, bmode);
		if (!mode)
			return 0;
		mode->vrefresh = drm_mode_vrefresh(mode);

		drm_mode_probed_add(connector, mode);
	}

	drm_mode_connector_list_update(connector);

	return 1;
}

int vmw_du_connector_set_property(struct drm_connector *connector,
				  struct drm_property *property,
				  uint64_t val)
{
	return 0;
}