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| author |  Chris Wilson <chris@chris-wilson.co.uk>
| 2019-02-18 09:46:28 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk>
| 2019-02-19 09:46:31 +0000 |
| commit | be03564bd7b60b119aac60443b3602bac38d6405 (patch) | |
| tree | a8187cbf99c2d50883731ea2a188c96edb8913b6 /include/uapi/drm | |
| parent | drm/i915: Restore interrupt enabling after a reset (diff) | |
| download | linux-be03564bd7b60b119aac60443b3602bac38d6405.tar.gz linux-be03564bd7b60b119aac60443b3602bac38d6405.tar.bz2 linux-be03564bd7b60b119aac60443b3602bac38d6405.zip | |
drm/i915: Include reminders about leaving no holes in uAPI enums
We don't want to pre-reserve any holes in our uAPI for that is a sign of
nefarious and hidden activity. Add a reminder about our uAPI
expectations to encourage good practice when adding new defines/enums.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190218094628.13522-1-chris@chris-wilson.co.uk
Diffstat (limited to 'include/uapi/drm')
| -rw-r--r-- | include/uapi/drm/i915_drm.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index c890b7992d5c..8304a7f1ec3f 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -99,6 +99,8 @@ enum drm_i915_gem_engine_class { I915_ENGINE_CLASS_VIDEO = 2, I915_ENGINE_CLASS_VIDEO_ENHANCE = 3, + /* should be kept compact */ + I915_ENGINE_CLASS_INVALID = -1 }; @@ -319,6 +321,7 @@ typedef struct _drm_i915_sarea { #define DRM_I915_PERF_ADD_CONFIG 0x37 #define DRM_I915_PERF_REMOVE_CONFIG 0x38 #define DRM_I915_QUERY 0x39 +/* Must be kept compact -- no holes */ #define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t) #define DRM_IOCTL_I915_FLUSH DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH) @@ -559,6 +562,8 @@ typedef struct drm_i915_irq_wait { */ #define I915_PARAM_MMAP_GTT_COHERENT 52 +/* Must be kept compact -- no holes and well documented */ + typedef struct drm_i915_getparam { __s32 param; /* @@ -574,6 +579,7 @@ typedef struct drm_i915_getparam { #define I915_SETPARAM_TEX_LRU_LOG_GRANULARITY 2 #define I915_SETPARAM_ALLOW_BATCHBUFFER 3 #define I915_SETPARAM_NUM_USED_FENCES 4 +/* Must be kept compact -- no holes */ typedef struct drm_i915_setparam { int param; @@ -1511,6 +1517,7 @@ struct drm_i915_gem_context_param { * On creation, all new contexts are marked as recoverable. */ #define I915_CONTEXT_PARAM_RECOVERABLE 0x8 +/* Must be kept compact -- no holes and well documented */ __u64 value; }; @@ -1734,6 +1741,7 @@ struct drm_i915_perf_oa_config { struct drm_i915_query_item { __u64 query_id; #define DRM_I915_QUERY_TOPOLOGY_INFO 1 +/* Must be kept compact -- no holes and well documented */ /* * When set to zero by userspace, this is filled with the size of the |