diff options
Diffstat (limited to 'shared-core')
| -rw-r--r-- | shared-core/drm.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/shared-core/drm.h b/shared-core/drm.h index 70a25b24..6f6f2386 100644 --- a/shared-core/drm.h +++ b/shared-core/drm.h @@ -748,11 +748,31 @@ struct drm_fence_arg { /* Driver-private flags */ #define DRM_BO_MASK_DRIVER 0xFFFF000000000000ULL -/* Don't block on validate and map */ +/* + * Don't block on validate and map. Instead, return EBUSY. + */ #define DRM_BO_HINT_DONT_BLOCK 0x00000002 -/* Don't place this buffer on the unfenced list.*/ +/* + * Don't place this buffer on the unfenced list. This means + * that the buffer will not end up having a fence associated + * with it as a result of this operation + */ #define DRM_BO_HINT_DONT_FENCE 0x00000004 +/* + * Sleep while waiting for the operation to complete. + * Without this flag, the kernel will, instead, spin + * until this operation has completed. I'm not sure + * why you would ever want this, so please always + * provide DRM_BO_HINT_WAIT_LAZY to any operation + * which may block + */ #define DRM_BO_HINT_WAIT_LAZY 0x00000008 +/* + * The client has compute relocations refering to this buffer using the + * offset in the presumed_offset field. If that offset ends up matching + * where this buffer lands, the kernel is free to skip executing those + * relocations + */ #define DRM_BO_HINT_PRESUMED_OFFSET 0x00000010 #define DRM_BO_INIT_MAGIC 0xfe769812 |