Merge branch 'vmwgfx-fixes-4.19' of git://people.freedesktop.org/~thomash/linux into drm-fixes

A couple of modesetting fixes and a fix for a long-standing buffer-eviction
problem cc'd stable.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Hellstrom <thellstrom@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180920063935.35492-1-thellstrom@vmware.com

4 files changed, 45 insertions, 48 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index 1f134570b759..f0ab6b2313bb 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -3729,7 +3729,7 @@ int vmw_validate_single_buffer(struct vmw_private *dev_priv,
 {
 	struct vmw_buffer_object *vbo =
 		container_of(bo, struct vmw_buffer_object, base);
-	struct ttm_operation_ctx ctx = { interruptible, true };
+	struct ttm_operation_ctx ctx = { interruptible, false };
 	int ret;
 
 	if (vbo->pin_count > 0)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 23beff5d8e3c..6a712a8d59e9 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -1512,21 +1512,19 @@ static int vmw_kms_check_display_memory(struct drm_device *dev,
 					struct drm_rect *rects)
 {
 	struct vmw_private *dev_priv = vmw_priv(dev);
-	struct drm_mode_config *mode_config = &dev->mode_config;
 	struct drm_rect bounding_box = {0};
 	u64 total_pixels = 0, pixel_mem, bb_mem;
 	int i;
 
 	for (i = 0; i < num_rects; i++) {
 		/*
-		 * Currently this check is limiting the topology within max
-		 * texture/screentarget size. This should change in future when
-		 * user-space support multiple fb with topology.
+		 * For STDU only individual screen (screen target) is limited by
+		 * SCREENTARGET_MAX_WIDTH/HEIGHT registers.
 		 */
-		if (rects[i].x1 < 0 ||  rects[i].y1 < 0 ||
-		    rects[i].x2 > mode_config->max_width ||
-		    rects[i].y2 > mode_config->max_height) {
-			DRM_ERROR("Invalid GUI layout.\n");
+		if (dev_priv->active_display_unit == vmw_du_screen_target &&
+		    (drm_rect_width(&rects[i]) > dev_priv->stdu_max_width ||
+		     drm_rect_height(&rects[i]) > dev_priv->stdu_max_height)) {
+			DRM_ERROR("Screen size not supported.\n");
 			return -EINVAL;
 		}
 
@@ -1615,7 +1613,7 @@ static int vmw_kms_check_topology(struct drm_device *dev,
 		struct drm_connector_state *conn_state;
 		struct vmw_connector_state *vmw_conn_state;
 
-		if (!new_crtc_state->enable && old_crtc_state->enable) {
+		if (!new_crtc_state->enable) {
 			rects[i].x1 = 0;
 			rects[i].y1 = 0;
 			rects[i].x2 = 0;
@@ -2216,12 +2214,16 @@ int vmw_du_connector_fill_modes(struct drm_connector *connector,
 	if (dev_priv->assume_16bpp)
 		assumed_bpp = 2;
 
+	max_width  = min(max_width,  dev_priv->texture_max_width);
+	max_height = min(max_height, dev_priv->texture_max_height);
+
+	/*
+	 * For STDU extra limit for a mode on SVGA_REG_SCREENTARGET_MAX_WIDTH/
+	 * HEIGHT registers.
+	 */
 	if (dev_priv->active_display_unit == vmw_du_screen_target) {
 		max_width  = min(max_width,  dev_priv->stdu_max_width);
-		max_width  = min(max_width,  dev_priv->texture_max_width);
-
 		max_height = min(max_height, dev_priv->stdu_max_height);
-		max_height = min(max_height, dev_priv->texture_max_height);
 	}
 
 	/* Add preferred mode */
@@ -2376,6 +2378,7 @@ int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
 				struct drm_file *file_priv)
 {
 	struct vmw_private *dev_priv = vmw_priv(dev);
+	struct drm_mode_config *mode_config = &dev->mode_config;
 	struct drm_vmw_update_layout_arg *arg =
 		(struct drm_vmw_update_layout_arg *)data;
 	void __user *user_rects;
@@ -2421,6 +2424,21 @@ int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
 		drm_rects[i].y1 = curr_rect.y;
 		drm_rects[i].x2 = curr_rect.x + curr_rect.w;
 		drm_rects[i].y2 = curr_rect.y + curr_rect.h;
+
+		/*
+		 * Currently this check is limiting the topology within
+		 * mode_config->max (which actually is max texture size
+		 * supported by virtual device). This limit is here to address
+		 * window managers that create a big framebuffer for whole
+		 * topology.
+		 */
+		if (drm_rects[i].x1 < 0 ||  drm_rects[i].y1 < 0 ||
+		    drm_rects[i].x2 > mode_config->max_width ||
+		    drm_rects[i].y2 > mode_config->max_height) {
+			DRM_ERROR("Invalid GUI layout.\n");
+			ret = -EINVAL;
+			goto out_free;
+		}
 	}
 
 	ret = vmw_kms_check_display_memory(dev, arg->num_outputs, drm_rects);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
index 93f6b96ca7bb..f30e839f7bfd 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
@@ -1600,31 +1600,6 @@ int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
 
 	dev_priv->active_display_unit = vmw_du_screen_target;
 
-	if (dev_priv->capabilities & SVGA_CAP_3D) {
-		/*
-		 * For 3D VMs, display (scanout) buffer size is the smaller of
-		 * max texture and max STDU
-		 */
-		uint32_t max_width, max_height;
-
-		max_width = min(dev_priv->texture_max_width,
-				dev_priv->stdu_max_width);
-		max_height = min(dev_priv->texture_max_height,
-				 dev_priv->stdu_max_height);
-
-		dev->mode_config.max_width = max_width;
-		dev->mode_config.max_height = max_height;
-	} else {
-		/*
-		 * Given various display aspect ratios, there's no way to
-		 * estimate these using prim_bb_mem.  So just set these to
-		 * something arbitrarily large and we will reject any layout
-		 * that doesn't fit prim_bb_mem later
-		 */
-		dev->mode_config.max_width = 8192;
-		dev->mode_config.max_height = 8192;
-	}
-
 	vmw_kms_create_implicit_placement_property(dev_priv, false);
 
 	for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
index e125233e074b..80a01cd4c051 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -1404,22 +1404,17 @@ int vmw_surface_gb_priv_define(struct drm_device *dev,
 	*srf_out = NULL;
 
 	if (for_scanout) {
-		uint32_t max_width, max_height;
-
 		if (!svga3dsurface_is_screen_target_format(format)) {
 			DRM_ERROR("Invalid Screen Target surface format.");
 			return -EINVAL;
 		}
 
-		max_width = min(dev_priv->texture_max_width,
-				dev_priv->stdu_max_width);
-		max_height = min(dev_priv->texture_max_height,
-				 dev_priv->stdu_max_height);
-
-		if (size.width > max_width || size.height > max_height) {
+		if (size.width > dev_priv->texture_max_width ||
+		    size.height > dev_priv->texture_max_height) {
 			DRM_ERROR("%ux%u\n, exceeds max surface size %ux%u",
 				  size.width, size.height,
-				  max_width, max_height);
+				  dev_priv->texture_max_width,
+				  dev_priv->texture_max_height);
 			return -EINVAL;
 		}
 	} else {
@@ -1495,8 +1490,17 @@ int vmw_surface_gb_priv_define(struct drm_device *dev,
 	if (srf->flags & SVGA3D_SURFACE_BIND_STREAM_OUTPUT)
 		srf->res.backup_size += sizeof(SVGA3dDXSOState);
 
+	/*
+	 * Don't set SVGA3D_SURFACE_SCREENTARGET flag for a scanout surface with
+	 * size greater than STDU max width/height. This is really a workaround
+	 * to support creation of big framebuffer requested by some user-space
+	 * for whole topology. That big framebuffer won't really be used for
+	 * binding with screen target as during prepare_fb a separate surface is
+	 * created so it's safe to ignore SVGA3D_SURFACE_SCREENTARGET flag.
+	 */
 	if (dev_priv->active_display_unit == vmw_du_screen_target &&
-	    for_scanout)
+	    for_scanout && size.width <= dev_priv->stdu_max_width &&
+	    size.height <= dev_priv->stdu_max_height)
 		srf->flags |= SVGA3D_SURFACE_SCREENTARGET;
 
 	/*