diff options
| author | Rob Clark <robdclark@chromium.org> | 2023-11-06 10:50:26 -0800 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2023-11-20 18:33:17 -0800 |
| commit | 9902cb999e4e913d98e8afe4b36c08e4a793e1ce (patch) | |
| tree | ac483307cac18761cc46f76cbbe32a8b327dac71 /include/uapi/drm | |
| parent | d1912f6972b857e63577e8094f5f1242d9fe3c7d (diff) | |
drm/msm/gem: Add metadata
The EXT_external_objects extension is a bit awkward as it doesn't pass
explicit modifiers, leaving the importer to guess with incomplete
information. In the case of vk (turnip) exporting and gl (freedreno)
importing, the "OPTIMAL_TILING_EXT" layout depends on VkImageCreateInfo
flags (among other things), which the importer does not know. Which
unfortunately leaves us with the need for a metadata back-channel.
The contents of the metadata are defined by userspace. The
EXT_external_objects extension is only required to work between
compatible versions of gl and vk drivers, as defined by device and
driver UUIDs.
v2: add missing metadata kfree
v3: Rework to move copy_from/to_user out from under gem obj lock
to avoid angering lockdep about deadlocks against fs-reclaim
Signed-off-by: Rob Clark <robdclark@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/566157/
Diffstat (limited to 'include/uapi/drm')
| -rw-r--r-- | include/uapi/drm/msm_drm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h index 6c34272a13fd..6f2a7ad04aa4 100644 --- a/include/uapi/drm/msm_drm.h +++ b/include/uapi/drm/msm_drm.h @@ -139,6 +139,8 @@ struct drm_msm_gem_new { #define MSM_INFO_GET_NAME 0x03 /* get debug name, returned by pointer */ #define MSM_INFO_SET_IOVA 0x04 /* set the iova, passed by value */ #define MSM_INFO_GET_FLAGS 0x05 /* get the MSM_BO_x flags */ +#define MSM_INFO_SET_METADATA 0x06 /* set userspace metadata */ +#define MSM_INFO_GET_METADATA 0x07 /* get userspace metadata */ struct drm_msm_gem_info { __u32 handle; /* in */ |