Commit cdeaeb9d authored by Danilo Krummrich's avatar Danilo Krummrich
Browse files

drm: nova-drm: add initial driver skeleton 

Add the initial nova-drm driver skeleton.

nova-drm is connected to nova-core through the auxiliary bus and
implements the DRM parts of the nova driver stack.

For now, it implements the fundamental DRM abstractions, i.e. creates a
DRM device and registers it, exposing a three sample IOCTLs.

  DRM_IOCTL_NOVA_GETPARAM
    - provides the PCI bar size from the bar that maps the GPUs VRAM
      from nova-core

  DRM_IOCTL_NOVA_GEM_CREATE
    - creates a new dummy DRM GEM object and returns a handle

  DRM_IOCTL_NOVA_GEM_INFO
    - provides metadata for the DRM GEM object behind a given handle

I implemented a small userspace test suite [1] that utilizes this
interface.

Link: https://gitlab.freedesktop.org/dakr/drm-test

 [1]
Reviewed-by: default avatarMaxime Ripard <mripard@kernel.org>
Acked-by: default avatarDave Airlie <airlied@redhat.com>
Link: https://lore.kernel.org/r/20250424160452.8070-3-dakr@kernel.org


[ Kconfig: depend on DRM=y rather than just DRM. - Danilo ]
Signed-off-by: default avatarDanilo Krummrich <dakr@kernel.org>
parent e041d81a

MAINTAINERS

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@@ -7594,6 +7594,18 @@ T: git https://gitlab.freedesktop.org/drm/nova.git nova-next 
F:	Documentation/gpu/nova/

F:	drivers/gpu/nova-core/









DRM DRIVER FOR NVIDIA GPUS [RUST]









M:	Danilo Krummrich <dakr@kernel.org>









L:	nouveau@lists.freedesktop.org









S:	Supported









Q:	https://patchwork.freedesktop.org/project/nouveau/









B:	https://gitlab.freedesktop.org/drm/nova/-/issues









C:	irc://irc.oftc.net/nouveau









T:	git https://gitlab.freedesktop.org/drm/nova.git nova-next









F:	Documentation/gpu/nova/









F:	drivers/gpu/drm/nova/









F:	include/uapi/drm/nova_drm.h

















DRM DRIVER FOR OLIMEX LCD-OLINUXINO PANELS









M:	Stefan Mavrodiev <stefan@olimex.com>









S:	Maintained
































drivers/gpu/drm/Kconfig



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@@ -343,6 +343,8 @@ source "drivers/gpu/drm/amd/amdgpu/Kconfig"

















source "drivers/gpu/drm/nouveau/Kconfig"



















source "drivers/gpu/drm/nova/Kconfig"



















source "drivers/gpu/drm/i915/Kconfig"



















source "drivers/gpu/drm/xe/Kconfig"
































drivers/gpu/drm/Makefile



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@@ -176,6 +176,7 @@ obj-$(CONFIG_DRM_VMWGFX)+= vmwgfx/







obj-$(CONFIG_DRM_VGEM)	+= vgem/









obj-$(CONFIG_DRM_VKMS)	+= vkms/









obj-$(CONFIG_DRM_NOUVEAU) +=nouveau/









obj-$(CONFIG_DRM_NOVA) += nova/









obj-$(CONFIG_DRM_EXYNOS) +=exynos/









obj-$(CONFIG_DRM_ROCKCHIP) +=rockchip/









obj-$(CONFIG_DRM_GMA500) += gma500/
































drivers/gpu/drm/nova/Kconfig
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config DRM_NOVA









	tristate "Nova DRM driver"









	depends on AUXILIARY_BUS









	depends on DRM=y









	depends on PCI









	depends on RUST









	default n









	help









	  Choose this if you want to build the Nova DRM driver for Nvidia









	  GSP-based GPUs.



















	  This driver is work in progress and may not be functional.



















	  If M is selected, the module will be called nova.
























drivers/gpu/drm/nova/Makefile
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# SPDX-License-Identifier: GPL-2.0



















obj-$(CONFIG_DRM_NOVA) += nova.o