FIMC & GSC driver can calculate the offset of planes. So there are
use cases which IPP receives just one GEM handle of an image with
multiple plane. This patch extends ipp_validate_mem_node() to validate
this case.
Signed-off-by: Hyungwon Hwang <human.hwang@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_ipp.c | 51 ++++++++++++++++++++++++---------
1 file changed, 38 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_ipp.c b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
index 54c5cf4..b3dc778 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_ipp.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
@@ -482,8 +482,8 @@ static int ipp_validate_mem_node(struct drm_device *drm_dev,
{
struct drm_exynos_ipp_config *ipp_cfg;
unsigned int num_plane;
- unsigned long min_size, size;
- unsigned int bpp;
+ unsigned long size, buf_size = 0, plane_size, img_size = 0;
+ unsigned int bpp, width, height;
int i;
ipp_cfg = &c_node->property.config[m_node->ops_id];
@@ -497,20 +497,45 @@ static int ipp_validate_mem_node(struct drm_device *drm_dev,
* but it seems more than enough
*/
for (i = 0; i < num_plane; ++i) {
- if (!m_node->buf_info.handles[i]) {
- DRM_ERROR("invalid handle for plane %d\n", i);
- return -EINVAL;
- }
+ width = ipp_cfg->sz.hsize;
+ height = ipp_cfg->sz.vsize;
bpp = drm_format_plane_cpp(ipp_cfg->fmt, i);
- min_size = (ipp_cfg->sz.hsize * ipp_cfg->sz.vsize * bpp) >> 3;
- size = exynos_drm_gem_get_size(drm_dev,
- m_node->buf_info.handles[i],
- c_node->filp);
- if (min_size > size) {
- DRM_ERROR("invalid size for plane %d\n", i);
- return -EINVAL;
+
+ /*
+ * The result of drm_format_plane_cpp() for chroma planes must
+ * be used with drm_format_xxxx_chroma_subsampling() for
+ * correct result.
+ */
+ if (i > 0) {
+ width /= drm_format_horz_chroma_subsampling(
+ ipp_cfg->fmt);
+ height /= drm_format_vert_chroma_subsampling(
+ ipp_cfg->fmt);
}
+ plane_size = width * height * bpp;
+ img_size += plane_size;
+
+ if (m_node->buf_info.handles[i]) {
+ size = exynos_drm_gem_get_size(drm_dev,
+ m_node->buf_info.handles[i],
+ c_node->filp);
+ if (plane_size > size) {
+ DRM_ERROR(
+ "buffer %d is smaller than required\n",
+ i);
+ return -EINVAL;
+ }
+
+ buf_size += size;
+ }
+ }
+
+ if (buf_size < img_size) {
+ DRM_ERROR("size of buffers(%lu) is smaller than image(%lu)\n",
+ buf_size, img_size);
+ return -EINVAL;
}
+
return 0;
}
--
1.9.1
--
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