diff options
| author | Danilo Krummrich <dakr@redhat.com> | 2023-08-04 20:23:51 +0200 |
|---|---|---|
| committer | Danilo Krummrich <dakr@redhat.com> | 2023-08-04 20:34:41 +0200 |
| commit | b88baab828713ce0b49b185444b2ee83bed373a8 (patch) | |
| tree | 248867f189fd3f2c05c43e501e52fb94beac36c2 /Documentation/gpu/driver-uapi.rst | |
| parent | 6b252cf42281045a9f803d2198023500cfa6ebd2 (diff) | |
| download | linux-stable-b88baab828713ce0b49b185444b2ee83bed373a8.tar.gz linux-stable-b88baab828713ce0b49b185444b2ee83bed373a8.tar.bz2 linux-stable-b88baab828713ce0b49b185444b2ee83bed373a8.zip | |
drm/nouveau: implement new VM_BIND uAPI
This commit provides the implementation for the new uapi motivated by the
Vulkan API. It allows user mode drivers (UMDs) to:
1) Initialize a GPU virtual address (VA) space via the new
DRM_IOCTL_NOUVEAU_VM_INIT ioctl for UMDs to specify the portion of VA
space managed by the kernel and userspace, respectively.
2) Allocate and free a VA space region as well as bind and unbind memory
to the GPUs VA space via the new DRM_IOCTL_NOUVEAU_VM_BIND ioctl.
UMDs can request the named operations to be processed either
synchronously or asynchronously. It supports DRM syncobjs
(incl. timelines) as synchronization mechanism. The management of the
GPU VA mappings is implemented with the DRM GPU VA manager.
3) Execute push buffers with the new DRM_IOCTL_NOUVEAU_EXEC ioctl. The
execution happens asynchronously. It supports DRM syncobj (incl.
timelines) as synchronization mechanism. DRM GEM object locking is
handled with drm_exec.
Both, DRM_IOCTL_NOUVEAU_VM_BIND and DRM_IOCTL_NOUVEAU_EXEC, use the DRM
GPU scheduler for the asynchronous paths.
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230804182406.5222-12-dakr@redhat.com
Diffstat (limited to 'Documentation/gpu/driver-uapi.rst')
| -rw-r--r-- | Documentation/gpu/driver-uapi.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/gpu/driver-uapi.rst b/Documentation/gpu/driver-uapi.rst index 9c7ca6e33a68..c08bcbb95fb3 100644 --- a/Documentation/gpu/driver-uapi.rst +++ b/Documentation/gpu/driver-uapi.rst @@ -13,4 +13,7 @@ drm/nouveau uAPI VM_BIND / EXEC uAPI ------------------- +.. kernel-doc:: drivers/gpu/drm/nouveau/nouveau_exec.c + :doc: Overview + .. kernel-doc:: include/uapi/drm/nouveau_drm.h |