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| author | Danilo Krummrich <dakr@redhat.com> | 2023-08-04 21:23:51 +0300 |
|---|---|---|
| committer | Danilo Krummrich <dakr@redhat.com> | 2023-08-04 21:34:41 +0300 |
| commit | b88baab828713ce0b49b185444b2ee83bed373a8 (patch) | |
| tree | 248867f189fd3f2c05c43e501e52fb94beac36c2 /drivers/gpu/drm/nouveau/nouveau_prime.c | |
| parent | 6b252cf42281045a9f803d2198023500cfa6ebd2 (diff) | |
| download | linux-b88baab828713ce0b49b185444b2ee83bed373a8.tar.xz | |
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 'drivers/gpu/drm/nouveau/nouveau_prime.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_prime.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c index f42c2b1b0363..1b2ff0c40fc1 100644 --- a/drivers/gpu/drm/nouveau/nouveau_prime.c +++ b/drivers/gpu/drm/nouveau/nouveau_prime.c @@ -50,7 +50,7 @@ struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev, dma_resv_lock(robj, NULL); nvbo = nouveau_bo_alloc(&drm->client, &size, &align, - NOUVEAU_GEM_DOMAIN_GART, 0, 0); + NOUVEAU_GEM_DOMAIN_GART, 0, 0, true); if (IS_ERR(nvbo)) { obj = ERR_CAST(nvbo); goto unlock; @@ -102,3 +102,14 @@ void nouveau_gem_prime_unpin(struct drm_gem_object *obj) nouveau_bo_unpin(nvbo); } + +struct dma_buf *nouveau_gem_prime_export(struct drm_gem_object *gobj, + int flags) +{ + struct nouveau_bo *nvbo = nouveau_gem_object(gobj); + + if (nvbo->no_share) + return ERR_PTR(-EPERM); + + return drm_gem_prime_export(gobj, flags); +} |