# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

inherit desktop flag-o-matic linux-mod-r1 readme.gentoo-r1
inherit systemd toolchain-funcs unpacker user-info

NV_URI="https://download.nvidia.com/XFree86/"

DESCRIPTION="NVIDIA Accelerated Graphics Driver"
HOMEPAGE="https://www.nvidia.com/download/index.aspx"
SRC_URI="
	${NV_URI}Linux-x86_64/${PV}/NVIDIA-Linux-x86_64-${PV}.run
	$(printf "${NV_URI}%s/%s-${PV}.tar.bz2 " \
		nvidia-{installer,modprobe,persistenced,xconfig}{,})
"
# nvidia-installer is unused but here for GPL-2's "distribute sources"
S=${WORKDIR}

LICENSE="NVIDIA-r2 Apache-2.0 BSD BSD-2 GPL-2 MIT ZLIB curl openssl"
SLOT="5"
KEYWORDS="-* amd64"
IUSE="abi_x86_32 abi_x86_64 +acpi +dkms +persistenced +powerd +tools +wayland +X"
RESTRICT="strip"

COMMON_DEPEND="
	acct-group/video
	X? ( x11-libs/libpciaccess )
	persistenced? (
		acct-user/nvpd
		net-libs/libtirpc:=
	)
"
RDEPEND="
	${COMMON_DEPEND}
	dev-libs/openssl:0/3
	sys-libs/glibc
	!!x11-drivers/nvidia-drivers:3
	!!x11-drivers/nvidia-drivers:4
	acpi? ( sys-power/acpid )
	dkms? ( ~sys-kernel/${PN}-dkms-${PV}:${SLOT} )
	X? (
		media-libs/libglvnd[X,abi_x86_32(-)?]
		x11-libs/libX11[abi_x86_32(-)?]
		x11-libs/libXext[abi_x86_32(-)?]
	)
	powerd? ( sys-apps/dbus[abi_x86_32(-)?] )
	wayland? (
		gui-libs/egl-gbm
		>=gui-libs/egl-wayland-1.1.10
	)
"
DEPEND="
	${COMMON_DEPEND}
	x11-base/xorg-proto
	x11-libs/libX11
	x11-libs/libXext
"
BDEPEND="
	sys-devel/m4
	virtual/pkgconfig
"
PDEPEND="
	tools? ( x11-misc/nvidia-settings:${SLOT} )
"

QA_PREBUILT="lib/firmware/* opt/bin/* usr/lib*"

PATCHES=(
	"${FILESDIR}"/nvidia-modprobe-390.141-uvm-perms.patch
)

pkg_setup() {
	local CONFIG_CHECK="
		PROC_FS
		~DRM_KMS_HELPER
		~SYSVIPC
		~!LOCKDEP
		~!SLUB_DEBUG_ON
		!DEBUG_MUTEXES
		$(usev powerd '~CPU_FREQ')
	"

	local ERROR_DRM_KMS_HELPER="CONFIG_DRM_KMS_HELPER: is not set but required
	for drivers (no custom config), and for wayland / nvidia-drm.modeset=1.
	Cannot be directly selected in the kernel's menuconfig, and may need
	selection of a DRM device even if unused, e.g. CONFIG_DRM_AMDGPU=m or
	DRM_I915=y, DRM_NOUVEAU=m also acceptable if a module and not built-in."

	kernel_is -ge 5 8 && CONFIG_CHECK+=" X86_PAT" #817764

	CONFIG_CHECK+=" MMU_NOTIFIER" #843827
	local ERROR_MMU_NOTIFIER="CONFIG_MMU_NOTIFIER: is not set but required.
	Cannot be directly selected in the kernel's menuconfig, and may need
	selection of another option that requires it such as CONFIG_KVM."
}

src_prepare() {
	# make patches usable across versions
	rm nvidia-modprobe && mv nvidia-modprobe{-${PV},} || die
	rm nvidia-persistenced && mv nvidia-persistenced{-${PV},} || die
	rm nvidia-xconfig && mv nvidia-xconfig{-${PV},} || die

	default

	# prevent detection of incomplete kernel DRM support (bug #603818)
	sed 's/defined(CONFIG_DRM/defined(CONFIG_DRM_KMS_HELPER/g' \
		-i kernel/conftest.sh || die

	# adjust service files
	sed 's/__USER__/nvpd/' \
		nvidia-persistenced/init/systemd/nvidia-persistenced.service.template \
		> "${T}"/nvidia-persistenced.service || die
	sed -i "s|/usr|${EPREFIX}/opt|" systemd/system/nvidia-powerd.service || die

	# use alternative vulkan icd option if USE=-X (bug #909181)
	use X || sed -i 's/"libGLX/"libEGL/' nvidia_{layers,icd}.json || die

	# enable nvidia-drm.modeset=1 by default with USE=wayland
	cp "${FILESDIR}"/nvidia-545.conf "${T}"/nvidia.conf || die
	use !wayland || sed -i '/^#.*modeset=1$/s/^#//' "${T}"/nvidia.conf || die
}

src_compile() {
	tc-export AR CC CXX LD OBJCOPY OBJDUMP PKG_CONFIG

	local xnvflags=-fPIC #840389
	# lto static libraries tend to cause problems without fat objects
	tc-is-lto && xnvflags+=" $(test-flags-CC -ffat-lto-objects)"

	NV_ARGS=(
		PREFIX="${EPREFIX}"/usr
		HOST_CC="$(tc-getBUILD_CC)"
		HOST_LD="$(tc-getBUILD_LD)"
		BUILD_GTK2LIB=
		NV_USE_BUNDLED_LIBJANSSON=0
		NV_VERBOSE=1 DO_STRIP= MANPAGE_GZIP= OUTPUTDIR=out
		WAYLAND_AVAILABLE=$(usex wayland 1 0)
		XNVCTRL_CFLAGS="${xnvflags}"
	)

	use persistenced && emake "${NV_ARGS[@]}" -C nvidia-persistenced

	emake "${NV_ARGS[@]}" -C nvidia-modprobe
	use X && emake "${NV_ARGS[@]}" -C nvidia-xconfig
}

src_install() {
	local libdir=$(get_libdir) libdir32=$(ABI=x86 get_libdir)

	NV_ARGS+=( DESTDIR="${D}" LIBDIR="${ED}"/usr/${libdir} )

	local -A paths=(
		[APPLICATION_PROFILE]=/usr/share/nvidia
		[CUDA_ICD]=/etc/OpenCL/vendors
		[EGL_EXTERNAL_PLATFORM_JSON]=/usr/share/egl/egl_external_platform.d
		[FIRMWARE]=/lib/firmware/nvidia/${PV}
		[GBM_BACKEND_LIB_SYMLINK]=/usr/${libdir}/gbm
		[GLVND_EGL_ICD_JSON]=/usr/share/glvnd/egl_vendor.d
		[OPENGL_DATA]=/usr/share/nvidia
		[VULKAN_ICD_JSON]=/usr/share/vulkan
		[WINE_LIB]=/usr/${libdir}/nvidia/wine
		[XORG_OUTPUTCLASS_CONFIG]=/usr/share/X11/xorg.conf.d

		[GLX_MODULE_SHARED_LIB]=/usr/${libdir}/xorg/modules/extensions
		[GLX_MODULE_SYMLINK]=/usr/${libdir}/xorg/modules
		[XMODULE_SHARED_LIB]=/usr/${libdir}/xorg/modules
	)

	local skip_files=(
		$(usev !X "libGLX_nvidia libglxserver_nvidia")
		libGLX_indirect # non-glvnd unused fallback
		libnvidia-{gtk,wayland-client} nvidia-{settings,xconfig} # from source
		libnvidia-egl-gbm 15_nvidia_gbm # gui-libs/egl-gbm
		libnvidia-egl-wayland 10_nvidia_wayland # gui-libs/egl-wayland
		libnvidia-pkcs11.so # using the openssl3 version instead
	)
	local skip_modules=(
		$(usev !X "nvfbc vdpau xdriver")
		$(usev !powerd powerd)
		installer gsp nvpd # handled separately / built from source
	)
	local skip_types=(
		GLVND_LIB GLVND_SYMLINK EGL_CLIENT.\* GLX_CLIENT.\* # media-libs/libglvnd
		OPENCL_WRAPPER.\* # virtual/opencl
		DOCUMENTATION DOT_DESKTOP .\*_SRC DKMS_CONF SYSTEMD_UNIT # handled separately / unused
	)

	local DOCS=(
		README.txt NVIDIA_Changelog supported-gpus/supported-gpus.json
	)
	local HTML_DOCS=( html/. )
	einstalldocs

	local DISABLE_AUTOFORMATTING=yes
	local DOC_CONTENTS="\
Trusted users should be in the 'video' group to use NVIDIA devices.
You can add yourself by using: gpasswd -a my-user video\

See '${EPREFIX}/etc/modprobe.d/nvidia.conf' for modules options.\

Note that without USE=abi_x86_32 on ${PN}, 32bit applications
(typically using wine / steam) will not be able to use GPU acceleration.\

For additional information or for troubleshooting issues, please see
https://wiki.gentoo.org/wiki/NVIDIA/nvidia-drivers and NVIDIA's own
documentation that is installed alongside this README."
	readme.gentoo_create_doc

	insinto /etc/modprobe.d
	doins "${T}"/nvidia.conf

	emake "${NV_ARGS[@]}" -C nvidia-modprobe install
	fowners :video /usr/bin/nvidia-modprobe #505092
	fperms 4710 /usr/bin/nvidia-modprobe

	if use persistenced; then
		emake "${NV_ARGS[@]}" -C nvidia-persistenced install
		newconfd "${FILESDIR}"/nvidia-persistenced.confd nvidia-persistenced
		newinitd "${FILESDIR}"/nvidia-persistenced.initd nvidia-persistenced
		systemd_dounit "${T}"/nvidia-persistenced.service
	fi

	use X && emake "${NV_ARGS[@]}" -C nvidia-xconfig install

	# mimic nvidia-installer by reading .manifest to install files
	# 0:file 1:perms 2:type 3+:subtype/arguments -:module
	local m into
	while IFS=' ' read -ra m; do
		! [[ ${#m[@]} -ge 2 && ${m[-1]} =~ MODULE: ]] ||
			[[ " ${m[0]##*/}" =~ ^(\ ${skip_files[*]/%/.*|\\} )$ ]] ||
			[[ " ${m[2]}" =~ ^(\ ${skip_types[*]/%/|\\} )$ ]] ||
			has ${m[-1]#MODULE:} "${skip_modules[@]}" && continue

		case ${m[2]} in
			MANPAGE)
				gzip -dc ${m[0]} | newman - ${m[0]%.gz}; assert
				continue
			;;
			GBM_BACKEND_LIB_SYMLINK) m[4]=../${m[4]};; # missing ../
			VDPAU_SYMLINK) m[4]=vdpau/; m[5]=${m[5]#vdpau/};; # .so to vdpau/
		esac

		if [[ -v 'paths[${m[2]}]' ]]; then
			into=${paths[${m[2]}]}
		elif [[ ${m[2]} == EXPLICIT_PATH ]]; then
			into=${m[3]}
		elif [[ ${m[2]} == *_BINARY ]]; then
			into=/opt/bin
		elif [[ ${m[3]} == COMPAT32 ]]; then
			use abi_x86_32 || continue
			into=/usr/${libdir32}
		elif [[ ${m[2]} == *_@(LIB|SYMLINK) ]]; then
			into=/usr/${libdir}
		else
			die "No known installation path for ${m[0]}"
		fi
		[[ ${m[3]: -2} == ?/ ]] && into+=/${m[3]%/}
		[[ ${m[4]: -2} == ?/ ]] && into+=/${m[4]%/}

		if [[ ${m[2]} =~ _SYMLINK$ ]]; then
			[[ ${m[4]: -1} == / ]] && m[4]=${m[5]}
			dosym ${m[4]} ${into}/${m[0]}
			continue
		fi
		[[ ${m[0]} =~ ^libnvidia-ngx.so|^libnvidia-egl-gbm.so ]] &&
			dosym ${m[0]} ${into}/${m[0]%.so*}.so.1 # soname not in .manifest

		printf -v m[1] %o $((m[1] | 0200)) # 444->644
		insopts -m${m[1]}
		insinto ${into}
		doins ${m[0]}
	done < .manifest || die
	insopts -m0644 # reset

	# MODULE:installer non-skipped extras
	: "$(systemd_get_sleepdir)"
	exeinto "${_#"${EPREFIX}"}"
	doexe systemd/system-sleep/nvidia
	dobin systemd/nvidia-sleep.sh
	systemd_dounit systemd/system/nvidia-{hibernate,resume,suspend}.service

	dobin nvidia-bug-report.sh

	# MODULE:powerd extras
	if use powerd; then
		newinitd "${FILESDIR}"/nvidia-powerd.initd nvidia-powerd #923117
		systemd_dounit systemd/system/nvidia-powerd.service

		insinto /usr/share/dbus-1/system.d
		doins nvidia-dbus.conf
	fi

	# symlink non-versioned so nvidia-settings can use it even if misdetected
	dosym nvidia-application-profiles-${PV}-key-documentation \
		${paths[APPLICATION_PROFILE]}/nvidia-application-profiles-key-documentation

	# don't attempt to strip firmware files (silences errors)
	dostrip -x ${paths[FIRMWARE]}

	# sandbox issues with /dev/nvidiactl others (bug #904292,#921578)
	# are widespread and sometime affect revdeps of packages built with
	# USE=opencl/cuda making it hard to manage in ebuilds (minimal set,
	# ebuilds should handle manually if need others or addwrite)
	insinto /etc/sandbox.d
	newins - 20nvidia <<<'SANDBOX_PREDICT="/dev/nvidiactl:/dev/nvidia-caps:/dev/char"'
}

pkg_preinst() {
	# set video group id based on live system (bug #491414)
	local g=$(egetent group video | cut -d: -f3)
	[[ ${g} =~ ^[0-9]+$ ]] || die "Failed to determine video group id (got '${g}')"
	sed -i "s/@VIDEOGID@/${g}/" "${ED}"/etc/modprobe.d/nvidia.conf || die
}

pkg_postinst() {
	readme.gentoo_print_elog

	if [[ $(</proc/cmdline) == *slub_debug=[!-]* ]]; then
		ewarn "Detected that the current kernel command line is using 'slub_debug=',"
		ewarn "this may lead to system instability/freezes with this version of"
		ewarn "${PN}. Bug: https://bugs.gentoo.org/796329"
	fi
}