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;;; SPDX-License-Identifier: GPL-3.0-or-later
;;; Copyright © 2022, 2024, 2026 Hilton Chain <hako@ultrarare.space>
(define-module (nongnu services nvidia)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (gnu system privilege)
#:use-module (gnu packages)
#:use-module (gnu packages linux)
#:use-module (gnu services)
#:use-module (gnu services base)
#:use-module (gnu services linux)
#:use-module (gnu services shepherd)
#:use-module (nongnu packages nvidia)
#:export (nvidia-configuration
nvidia-configuration?
nvidia-configuration-record?
nvidia-service-type))
(define-record-type* <nvidia-configuration>
nvidia-configuration make-nvidia-configuration
nvidia-configuration?
(driver nvidia-configuration-driver
(default nvda)) ; file-like
(firmware nvidia-configuration-firmware
(default nvidia-firmware)) ; file-like
(module nvidia-configuration-module
(default nvidia-module)) ; file-like
(modprobe nvidia-configuration-modprobe
(default nvidia-modprobe))) ; file-like
(define (nvidia-privileged-program config)
(match-record config <nvidia-configuration>
(modprobe)
(list (file-like->setuid-program
(file-append modprobe "/bin/nvidia-modprobe")))))
;; Create paths hard-coded in NVIDIA libraries.
(define (nvidia-special-files config)
`(("/usr/bin/nvidia-modprobe" "/run/privileged/bin/nvidia-modprobe")))
;; https://github.com/Frogging-Family/nvidia-all/blob/master/system/60-nvidia.rules
(define (nvidia-udev-rule config)
(list (udev-rule "90-nvidia.rules" "\
# Device nodes are created by nvidia-modprobe, which is called by the nvidia DDX.
# In case the DDX is not started, the device nodes are never created, so call
# nvidia-modprobe in the udev rules to cover the Wayland/EGLStream and compute
# case without a started display. In the case where vfio-pci is used
# nvidia-modprobe should not be invoked.
ACTION==\"add|bind\", ATTR{vendor}==\"0x10de\", ATTR{class}==\"0x03[0-9]*\", \\
DRIVER==\"nvidia\", TEST!=\"/dev/nvidia-uvm\", \\
RUN+=\"/usr/bin/nvidia-modprobe\", \\
RUN+=\"/usr/bin/nvidia-modprobe -c0 -u\"
# Enable runtime PM for NVIDIA VGA/3D controller devices
ACTION==\"bind\", SUBSYSTEM==\"pci\", ATTR{vendor}==\"0x10de\", ATTR{class}==\"0x03[0-9]*\", TEST==\"power/control\", ATTR{power/control}=\"auto\"
# Enable runtime PM for NVIDIA Audio devices
ACTION==\"bind\", SUBSYSTEM==\"pci\", ATTR{vendor}==\"0x10de\", ATTR{class}==\"0x040300\", TEST==\"power/control\", ATTR{power/control}=\"auto\"
# Enable runtime PM for NVIDIA USB xHCI Host Controller devices
ACTION==\"bind\", SUBSYSTEM==\"pci\", ATTR{vendor}==\"0x10de\", ATTR{class}==\"0x0c0330\", TEST==\"power/control\", ATTR{power/control}=\"auto\"
# Enable runtime PM for NVIDIA USB Type-C UCSI devices
ACTION==\"bind\", SUBSYSTEM==\"pci\", ATTR{vendor}==\"0x10de\", ATTR{class}==\"0x0c8000\", TEST==\"power/control\", ATTR{power/control}=\"auto\"
# Disable runtime PM for NVIDIA VGA/3D controller devices
ACTION==\"unbind\", SUBSYSTEM==\"pci\", ATTR{vendor}==\"0x10de\", ATTR{class}==\"0x03[0-9]*\", TEST==\"power/control\", ATTR{power/control}=\"on\"
# Disable runtime PM for NVIDIA Audio devices
ACTION==\"unbind\", SUBSYSTEM==\"pci\", ATTR{vendor}==\"0x10de\", ATTR{class}==\"0x040300\", TEST==\"power/control\", ATTR{power/control}=\"on\"
# Disable runtime PM for NVIDIA USB xHCI Host Controller devices
ACTION==\"unbind\", SUBSYSTEM==\"pci\", ATTR{vendor}==\"0x10de\", ATTR{class}==\"0x0c0330\", TEST==\"power/control\", ATTR{power/control}=\"on\"
# Disable runtime PM for NVIDIA USB Type-C UCSI devices
ACTION==\"unbind\", SUBSYSTEM==\"pci\", ATTR{vendor}==\"0x10de\", ATTR{class}==\"0x0c8000\", TEST==\"power/control\", ATTR{power/control}=\"on\"
")))
(define nvidia-service-type
(service-type
(name 'nvidia)
(extensions
(list (service-extension profile-service-type
(compose list nvidia-configuration-driver))
(service-extension privileged-program-service-type
nvidia-privileged-program)
(service-extension special-files-service-type
nvidia-special-files)
(service-extension udev-service-type
nvidia-udev-rule)
(service-extension firmware-service-type
(compose list nvidia-configuration-firmware))
(service-extension linux-loadable-module-service-type
(compose list nvidia-configuration-module))))
(default-value (nvidia-configuration))
(description "Prepare system environment for NVIDIA driver.")))
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