45 lines
1.2 KiB
Nix
45 lines
1.2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let cfg = config.services.ezpassthru;
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in {
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options.services.ezpassthru = {
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enable = mkEnableOption
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"Enable simple VM PCI passthrough config (NOTE: this is only for ppl with a primary AMD/Intel, and a non-primary NVidia)";
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PCIs = mkOption {
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description = "The ID pairs of your PCI devices to passthrough";
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example = {
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"10de:1b80" = "0000:41:00.0";
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"10de:10f0" = "0000:41:00.1";
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"1022:145c" = "0000:01:00.0";
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};
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};
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};
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config = mkIf cfg.enable {
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boot.kernelModules = [
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"kvm-intel"
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"kvm-amd"
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"vfio_virqfd"
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"vfio_pci"
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"vfio_iommu_type1"
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"vfio"
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];
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boot.kernelParams = [ "intel_iommu=on" "amd_iommu=on" "pcie_aspm=off" ];
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boot.extraModprobeConfig = "options vfio-pci ids=${
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builtins.concatStringsSep "," (builtins.attrNames cfg.PCIs)
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}";
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boot.postBootCommands = ''
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DEVS="${builtins.concatStringsSep " " (builtins.attrValues cfg.PCIs)}"
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for DEV in $DEVS; do
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echo "vfio-pci" > /sys/bus/pci/devices/$DEV/driver_override
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done
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${pkgs.kmod}/bin/modprobe -i vfio-pci
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'';
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};
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}
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