drm/tegra: Add SET/GET_FLAGS IOCTLs
The DRM_TEGRA_GEM_SET_FLAGS IOCTL can be used to set the flags of a
buffer object after it has been allocated or imported. Flags associated
with a buffer object can be queried using the DRM_TEGRA_GEM_GET_FLAGS
IOCTL.
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Tested-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index a029525..6e2e714 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -548,6 +548,53 @@
return err;
}
+
+static int tegra_gem_set_flags(struct drm_device *drm, void *data,
+ struct drm_file *file)
+{
+ struct drm_tegra_gem_set_flags *args = data;
+ struct drm_gem_object *gem;
+ struct tegra_bo *bo;
+
+ if (args->flags & ~DRM_TEGRA_GEM_FLAGS)
+ return -EINVAL;
+
+ gem = drm_gem_object_lookup(drm, file, args->handle);
+ if (!gem)
+ return -ENOENT;
+
+ bo = to_tegra_bo(gem);
+ bo->flags = 0;
+
+ if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP)
+ bo->flags |= TEGRA_BO_BOTTOM_UP;
+
+ drm_gem_object_unreference(gem);
+
+ return 0;
+}
+
+static int tegra_gem_get_flags(struct drm_device *drm, void *data,
+ struct drm_file *file)
+{
+ struct drm_tegra_gem_get_flags *args = data;
+ struct drm_gem_object *gem;
+ struct tegra_bo *bo;
+
+ gem = drm_gem_object_lookup(drm, file, args->handle);
+ if (!gem)
+ return -ENOENT;
+
+ bo = to_tegra_bo(gem);
+ args->flags = 0;
+
+ if (bo->flags & TEGRA_BO_BOTTOM_UP)
+ args->flags |= DRM_TEGRA_GEM_BOTTOM_UP;
+
+ drm_gem_object_unreference(gem);
+
+ return 0;
+}
#endif
static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
@@ -564,6 +611,8 @@
DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags, DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags, DRM_UNLOCKED),
#endif
};