# SPDX-FileCopyrightText: 2022 Richard Brežák <richard@brezak.sk>
#
# SPDX-License-Identifier: LGPL-3.0-or-later
{ pkgs, lib, inputs', ... }:
let
  inherit (lib)
    singleton
    mkForce;

  kernelPackages = pkgs.zfsUnstable.latestCompatibleLinuxPackages;
in
{
  environment.systemPackages = [
    kernelPackages.turbostat
  ];

  hardware.cpu.intel.updateMicrocode = true;

  boot = {
    initrd.systemd.enable = true;
    initrd.availableKernelModules = [
      "xhci_pci"
      "ahci"
      "usb_storage"
      "sr_mod"
      "rtsx_pci_sdmmc"
      "nvme"
      "vmd"
    ];
    initrd.kernelModules = [];
    kernelModules = singleton "kvm-intel";

    kernelParams = [
      "zfs.zfs_arc_max=8589934592"
      "zfs.zfs_arc_sys_free=3221225472"
      # "intel_pstate=active"
      "nvidia.NVreg_EnableS0ixPowerManagement=1"
      "nvidia.NVreg_S0ixPowerManagementVideoMemoryThreshold=2048"
      # "nvme.noacpi=1"
      "nvme_core.default_ps_max_latency_us=30000"
    ];
    kernelPackages = kernelPackages;

    zfs.enableUnstable = true;
    supportedFilesystems = singleton "zfs";
  };

  hardware.enableRedistributableFirmware = true;
  hardware.nvidia.package = kernelPackages.nvidia_x11_beta;

  hardware.tuxedo-keyboard.enable = true;

  specialisation.nvidia-sync.configuration = {
    hardware.nvidia = {
      powerManagement.enable = mkForce false;
      powerManagement.finegrained = mkForce false;
      prime.offload.enableOffloadCmd = mkForce false;
      prime.offload.enable = mkForce false;
      prime.sync.enable = true;
    };
  };

  hardware.nvidia = {
    nvidiaPersistenced = true;

    powerManagement.enable = true;
    powerManagement.finegrained = true;

    prime.reverseSync.enable = false;
    prime.offload.enable = true;

    modesetting.enable = true;
  };
}