refactor(treewide)

nixos/modules/host/hardware/cpu/amd.nix

@@ -0,0 +1,40 @@
+{ lib, config, pkgs, ... }:
+
+let
+  inherit (lib) mkMerge mkIf versionAtLeast versionOlder;
+  inherit (builtins) elem;
+  cpu = config.ooknet.host.hardware.cpu; 
+  cfg = cpu.amd;
+  kernelVersion = config.boot.kernelPackages.kernel.version;
+  kernelVersionAtLeast = versionAtLeast kernelVersion;
+  kernelVersionOlder= versionOlder kernelVersion;
+in
+
+{
+  config = mkIf (elem cpu.type ["amd"]) {
+    environment.systemPackages = [pkgs.amdctl];
+    hardware.cpu.amd.updateMicrocode = true;
+    boot = mkMerge [
+      {
+        kernelModules = [
+          "amd-pstate"
+          "amd-kvm" # virtulization
+          "msr" # required for amdctl
+        ];
+      }
+      
+      (mkIf (cfg.pstate.enable && (kernelVersionAtLeast "5.27") && (kernelVersionOlder "6.1")) {
+        kernelParams = ["initcall_blacklist-acpi_cpufreq_init"];
+        kernelModules = ["amd-pstate"];
+      })
+
+      (mkIf (cfg.pstate.enable && (kernelVersionAtLeast "6.1") && (kernelVersionOlder "6.3")) {
+        kernelParams = ["amd_pstate=passive"];
+      })
+
+      (mkIf (cfg.pstate.enable && (kernelVersionAtLeast "6.3")) {
+        kernelParams = ["amd_pstate=active"];
+      })
+    ];
+  };
+}

nixos/modules/host/hardware/cpu/default.nix

@@ -0,0 +1,6 @@
+{
+  imports = [
+    ./amd.nix
+    ./intel.nix
+  ];
+}

nixos/modules/host/hardware/cpu/intel.nix

@@ -0,0 +1,20 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf;
+  inherit (builtins) elem;
+  cpu = config.ooknet.host.hardware.cpu;
+in
+
+{
+  # TODO: put kvm/gvt behind virtualization module flag
+
+  config = mkIf (elem cpu.type ["intel"]) {
+    boot = {
+      kernelModules = ["kvm-intel"];
+      kernelParams = ["i915.fastboot=1" "enable_gvt=1"];
+    };
+    hardware.cpu.intel.updateMicrocode = true;
+    environment.systemPackages = [pkgs.intel-gpu-tools];
+  };
+}