Hi Donald,
On 6/9/23 13:56, Donald Robson wrote:
On Wed, 2023-06-07 at 00:31 +0200, Danilo Krummrich wrote:
Christian König (1):
drm: execution context for GEM buffers v4
Danilo Krummrich (13):
maple_tree: split up MA_STATE() macro
drm: manager to keep track of GPUs VA mappings
I have tested the drm GPUVA manager as part of using it with our new
driver. The link below shows use of the drm_gpuva_sm_[un]map()
functions. I think this is based on the v3 patches, but I have also
tried it locally using v4 patches. We will be submitting this
driver for review soon.
That's awesome - thank your for taking the effort!
https://gitlab.freedesktop.org/sarah-walker-imgtec/powervr/-/blob/dev/v3/drivers/gpu/drm/imagination/pvr_vm.c
In a previous incarnation, I used the drm_gpuva_insert() and
drm_gpuva_remove() functions directly. In some now abandoned work I
used the drm_gpuva_sm_[un]map_ops_create() route.
The only problem I encountered along the way was the maple tree init
issue already reported by Boris and fixed in v4. One caveat - as
our driver is a work in progress our testing is limited to certain
Sascha Willem tests.
I did find it quite difficult to get the prealloc route with
drm_gpuva_sm_[un]map() working. I'm not sure to what degree this
reflects me being a novice on matters DRM, but I did find myself
wishing for more direction, even with Boris's help.
I'm definitely up improving the existing documentation. Anything in
particular you think should be described in more detail?
- Danilo
Tested-by: Donald Robson <donald.rob...@imgtec.com>
drm: debugfs: provide infrastructure to dump a DRM GPU VA space
drm/nouveau: new VM_BIND uapi interfaces
drm/nouveau: get vmm via nouveau_cli_vmm()
drm/nouveau: bo: initialize GEM GPU VA interface
drm/nouveau: move usercopy helpers to nouveau_drv.h
drm/nouveau: fence: separate fence alloc and emit
drm/nouveau: fence: fail to emit when fence context is killed
drm/nouveau: chan: provide nouveau_channel_kill()
drm/nouveau: nvkm/vmm: implement raw ops to manage uvmm
drm/nouveau: implement new VM_BIND uAPI
drm/nouveau: debugfs: implement DRM GPU VA debugfs
