{ config, pkgs, lib, ... }:
with lib;
let
  cfg = config.aviallon.hardware.amd;
  generalCfg = config.aviallon.general;
in
{
  options.aviallon.hardware.amd = {
    enable = mkEnableOption "AMD gpus";
    useProprietary = mkEnableOption "Use proprietary AMDGPU Pro";
  };
  
  config = mkIf (cfg.enable) {
    boot.initrd.kernelModules = [ "amdgpu" ];

    aviallon.boot.cmdline = {
      # for Southern Islands (SI ie. GCN 1) cards
      "radeon.si_support" = 0;
      "amdgpu.si_support" = 1;
      # for Sea Islands (CIK ie. GCN 2) cards
      "radeon.cik_support" = 0;
      "amdgpu.cik_support" = 1;
      "amdgpu.freesync_video" = 1;
      "amdgpu.mes" = mkIf generalCfg.unsafeOptimizations 1;
    };

    environment.systemPackages = with pkgs; [
      rocm-smi
    ];

    services.xserver.videoDrivers = []
    ++ optional cfg.useProprietary "amdgpu-pro"
    ++ [
      "amdgpu"
      "radeon"
    ];

    hardware.opengl.extraPackages = with pkgs; mkIf (!cfg.useProprietary) [
      rocm-opencl-icd
      rocm-opencl-runtime
      amdvlk
    ];

    hardware.opengl.extraPackages32 = with pkgs.driversi686Linux; mkIf (!cfg.useProprietary) [
      amdvlk
      mesa
    ];
  };
}