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drm/vmwgfx: validate the screen formats

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The kms code wasn't validating the modifiers and was letting through
unsupported formats. rgb8 was never properly supported and has no
matching svga screen target format so remove it.
This fixes format/modifier failures in kms_addfb_basic from IGT.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220318174332.440068-4-zack@kde.org
This commit is contained in:
Zack Rusin 2022-03-18 13:43:30 -04:00
parent ab709795e3
commit 8bb75aeb58
2 changed files with 16 additions and 15 deletions
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30
drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
View file

@ -1171,6 +1171,15 @@ static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
* Sanity checks.
*/
if (!drm_any_plane_has_format(&dev_priv->drm,
mode_cmd->pixel_format,
mode_cmd->modifier[0])) {
drm_dbg(&dev_priv->drm,
"unsupported pixel format %p4cc / modifier 0x%llx\n",
&mode_cmd->pixel_format, mode_cmd->modifier[0]);
return -EINVAL;
}
/* Surface must be marked as a scanout. */
if (unlikely(!surface->metadata.scanout))
return -EINVAL;
@ -1493,20 +1502,13 @@ static int vmw_kms_new_framebuffer_bo(struct vmw_private *dev_priv,
return -EINVAL;
}
/* Limited framebuffer color depth support for screen objects */
if (dev_priv->active_display_unit == vmw_du_screen_object) {
switch (mode_cmd->pixel_format) {
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ARGB8888:
break;
case DRM_FORMAT_XRGB1555:
case DRM_FORMAT_RGB565:
break;
default:
DRM_ERROR("Invalid pixel format: %p4cc\n",
&mode_cmd->pixel_format);
return -EINVAL;
}
if (!drm_any_plane_has_format(&dev_priv->drm,
mode_cmd->pixel_format,
mode_cmd->modifier[0])) {
drm_dbg(&dev_priv->drm,
"unsupported pixel format %p4cc / modifier 0x%llx\n",
&mode_cmd->pixel_format, mode_cmd->modifier[0]);
return -EINVAL;
}
vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);

1
drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
View file

@ -247,7 +247,6 @@ struct vmw_framebuffer_bo {
static const uint32_t __maybe_unused vmw_primary_plane_formats[] = {
DRM_FORMAT_XRGB1555,
DRM_FORMAT_RGB565,
DRM_FORMAT_RGB888,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ARGB8888,
};