drm/vmwgfx: Add gui_x/y to vmw_connector_state

As gui_x/y positioning is display unit is protected by
requested_layout_mutex adding vmw_connector_state copy of the same and
modeset commit will refer the state copy to sync with modeset_check
state.

v2: Tested with CONFIG_PROVE_LOCKING enabled.
Signed-off-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>

drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

@@ -1609,26 +1609,43 @@ static int vmw_kms_check_topology(struct drm_device *dev,
 	for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
 				      new_crtc_state, i) {
 		struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
+		struct drm_connector *connector;
+		struct drm_connector_state *conn_state;
+		struct vmw_connector_state *vmw_conn_state;
 
 		if (!new_crtc_state->enable && old_crtc_state->enable) {
 			rects[i].x1 = 0;
 			rects[i].y1 = 0;
 			rects[i].x2 = 0;
 			rects[i].y2 = 0;
+			continue;
 		}
 
-		if (new_crtc_state->enable) {
-			/* If display unit is not active cannot enable CRTC */
-			if (!du->pref_active) {
-				ret = -EINVAL;
-				goto clean;
-			}
+		if (!du->pref_active) {
+			ret = -EINVAL;
+			goto clean;
+		}
 
-			rects[i].x1 = du->gui_x;
-			rects[i].y1 = du->gui_y;
-			rects[i].x2 = du->gui_x + new_crtc_state->mode.hdisplay;
-			rects[i].y2 = du->gui_y + new_crtc_state->mode.vdisplay;
+		/*
+		 * For vmwgfx each crtc has only one connector attached and it
+		 * is not changed so don't really need to check the
+		 * crtc->connector_mask and iterate over it.
+		 */
+		connector = &du->connector;
+		conn_state = drm_atomic_get_connector_state(state, connector);
+		if (IS_ERR(conn_state)) {
+			ret = PTR_ERR(conn_state);
+			goto clean;
 		}
+
+		vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
+		vmw_conn_state->gui_x = du->gui_x;
+		vmw_conn_state->gui_y = du->gui_y;
+
+		rects[i].x1 = du->gui_x;
+		rects[i].y1 = du->gui_y;
+		rects[i].x2 = du->gui_x + new_crtc_state->mode.hdisplay;
+		rects[i].y2 = du->gui_y + new_crtc_state->mode.vdisplay;
 	}
 
 	ret = vmw_kms_check_display_memory(dev, dev->mode_config.num_crtc,

drivers/gpu/drm/vmwgfx/vmwgfx_kms.h

@@ -192,6 +192,24 @@ struct vmw_connector_state {
 	struct drm_connector_state base;
 
 	bool is_implicit;
+
+	/**
+	 * @gui_x:
+	 *
+	 * vmwgfx connector property representing the x position of this display
+	 * unit (connector is synonymous to display unit) in overall topology.
+	 * This is what the device expect as xRoot while creating screen.
+	 */
+	int gui_x;
+
+	/**
+	 * @gui_y:
+	 *
+	 * vmwgfx connector property representing the y position of this display
+	 * unit (connector is synonymous to display unit) in overall topology.
+	 * This is what the device expect as yRoot while creating screen.
+	 */
+	int gui_y;
 };
 
 /**

drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c

@@ -109,7 +109,7 @@ static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
  */
 static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
 			       struct vmw_screen_object_unit *sou,
-			       uint32_t x, uint32_t y,
+			       int x, int y,
 			       struct drm_display_mode *mode)
 {
 	size_t fifo_size;
@@ -139,13 +139,8 @@ static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
 		(sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0);
 	cmd->obj.size.width = mode->hdisplay;
 	cmd->obj.size.height = mode->vdisplay;
-	if (sou->base.is_implicit) {
-		cmd->obj.root.x = x;
-		cmd->obj.root.y = y;
-	} else {
-		cmd->obj.root.x = sou->base.gui_x;
-		cmd->obj.root.y = sou->base.gui_y;
-	}
+	cmd->obj.root.x = x;
+	cmd->obj.root.y = y;
 	sou->base.set_gui_x = cmd->obj.root.x;
 	sou->base.set_gui_y = cmd->obj.root.y;
 
@@ -222,12 +217,11 @@ static void vmw_sou_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	struct vmw_plane_state *vps;
 	int ret;
 
-
-	sou      = vmw_crtc_to_sou(crtc);
+	sou = vmw_crtc_to_sou(crtc);
 	dev_priv = vmw_priv(crtc->dev);
-	ps       = crtc->primary->state;
-	fb       = ps->fb;
-	vps      = vmw_plane_state_to_vps(ps);
+	ps = crtc->primary->state;
+	fb = ps->fb;
+	vps = vmw_plane_state_to_vps(ps);
 
 	vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
 
@@ -240,11 +234,25 @@ static void vmw_sou_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	}
 
 	if (vfb) {
+		struct drm_connector_state *conn_state;
+		struct vmw_connector_state *vmw_conn_state;
+		int x, y;
+
 		sou->buffer = vps->bo;
 		sou->buffer_size = vps->bo_size;
 
-		ret = vmw_sou_fifo_create(dev_priv, sou, crtc->x, crtc->y,
-					  &crtc->mode);
+		if (sou->base.is_implicit) {
+			x = crtc->x;
+			y = crtc->y;
+		} else {
+			conn_state = sou->base.connector.state;
+			vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
+
+			x = vmw_conn_state->gui_x;
+			y = vmw_conn_state->gui_y;
+		}
+
+		ret = vmw_sou_fifo_create(dev_priv, sou, x, y, &crtc->mode);
 		if (ret)
 			DRM_ERROR("Failed to define Screen Object %dx%d\n",
 				  crtc->x, crtc->y);

drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

@@ -178,13 +178,9 @@ static int vmw_stdu_define_st(struct vmw_private *dev_priv,
 	cmd->body.height = mode->vdisplay;
 	cmd->body.flags  = (0 == cmd->body.stid) ? SVGA_STFLAG_PRIMARY : 0;
 	cmd->body.dpi    = 0;
-	if (stdu->base.is_implicit) {
-		cmd->body.xRoot  = crtc_x;
-		cmd->body.yRoot  = crtc_y;
-	} else {
-		cmd->body.xRoot  = stdu->base.gui_x;
-		cmd->body.yRoot  = stdu->base.gui_y;
-	}
+	cmd->body.xRoot  = crtc_x;
+	cmd->body.yRoot  = crtc_y;
+
 	stdu->base.set_gui_x = cmd->body.xRoot;
 	stdu->base.set_gui_y = cmd->body.yRoot;
 
@@ -374,11 +370,14 @@ static void vmw_stdu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 {
 	struct vmw_private *dev_priv;
 	struct vmw_screen_target_display_unit *stdu;
-	int ret;
-
+	struct drm_connector_state *conn_state;
+	struct vmw_connector_state *vmw_conn_state;
+	int x, y, ret;
 
-	stdu     = vmw_crtc_to_stdu(crtc);
+	stdu = vmw_crtc_to_stdu(crtc);
 	dev_priv = vmw_priv(crtc->dev);
+	conn_state = stdu->base.connector.state;
+	vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
 
 	if (stdu->defined) {
 		ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
@@ -397,8 +396,16 @@ static void vmw_stdu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	if (!crtc->state->enable)
 		return;
 
+	if (stdu->base.is_implicit) {
+		x = crtc->x;
+		y = crtc->y;
+	} else {
+		x = vmw_conn_state->gui_x;
+		y = vmw_conn_state->gui_y;
+	}
+
 	vmw_svga_enable(dev_priv);
-	ret = vmw_stdu_define_st(dev_priv, stdu, &crtc->mode, crtc->x, crtc->y);
+	ret = vmw_stdu_define_st(dev_priv, stdu, &crtc->mode, x, y);
 
 	if (ret)
 		DRM_ERROR("Failed to define Screen Target of size %dx%d\n",