---
- hosts: localhost
  become: yes
  vars:
    # the multipliers against power capability to determine power limits for the non-OC (default)/OC (custom) profiles
    # 0.5 = 50%
    # 1.0 = 100% (of card power capability, not stock limits)
    # should not exceed 1.0, must be a float.  driver will do some rounding/stepping
    power_max_custom_multi: 1.0 # used to boost GPU power to board capability for some overclocking
    power_max_default_multi: 0.75 # used to limit GPU power to some lower percentage on default perf mode
    gpu_clock_min: "2200" # minimum GPU clock (in 3D) - defaults 500Mhz
    gpu_clock_max: "2575" # maximum GPU clock (also 3D) - range allows up to 3000Mhz.  default 2529
    gpumem_clock_max: "1075" # maximum GPU memory clock - default 1000Mhz, range allows 1075Mhz
    # note: (all clocks based on my non-reference 6900XT)
    # consult '/sys/class/drm/{{ card }}/device/pp_od_clk_voltage'
    card: card0 # default to card0
    base_profiles: # list of source tuned profiles available on Fedora (TODO: should dynamically discover?)
      - balanced   # these are further modified with secondary (templated) profiles, see 'templates/tuned.conf.j2'
      - desktop
      - latency-performance
      - network-latency
      - network-throughput
      - powersave
      - virtual-host
    amdgpu_profiles: # statically defined mapping of the contents in /sys/class/drm/{{ card }}/device/pp_power_profile_mode
      - { name: 'default', value: 0 }
      - { name: 'custom', value: 6 }
  handlers:
    - name: restart tuned
      ansible.builtin.service:
        name: tuned
        state: restarted
  tasks:
    - name: find hwmon/max power capability file for {{ card }}
      find:
        paths: /sys/class/drm/{{ card }}/device/hwmon
        file_type: file
        recurse: yes
        use_regex: yes
        patterns:
          - '^power1_cap_max$'
      register: hwmon
    - name: get max power capability for {{ card }}
      slurp:
        src: "{{ hwmon.files.0.path }}"
      register: power_max_b64
    - name: ensure tuned is installed
      package:
        name: tuned
        state: present
    - name: create custom profile directories
      file:
        state: directory
        path: /etc/tuned/{{ item.1 }}-amdgpu-{{ item.0.name }}
        mode: "0755"
      with_nested:
        - "{{ amdgpu_profiles }}"
        - "{{ base_profiles }}"
    - name: template AMDGPU clock control scripts (tuned profile dependency)
      template:
        src: templates/amdgpu-clock.sh.j2
        dest: /etc/tuned/{{ item.1 }}-amdgpu-{{ item.0 }}/amdgpu-clock.sh
        owner: root
        group: root
        mode: "0755"
      with_nested:
        - 'custom'
        - "{{ base_profiles }}"
      notify: restart tuned
    - name: template AMDGPU clock control *reset* script (tuned profile dependency)
      template:
        src: templates/amdgpu-clock-reset.sh.j2
        dest: /etc/tuned/{{ item.1 }}-amdgpu-{{ item.0 }}/amdgpu-clock-reset.sh
        owner: root
        group: root
        mode: "0755"
      with_nested:
        - 'default'
        - "{{ base_profiles }}"
      notify: restart tuned
    - name: template custom tuned profiles
      template:
        src: templates/tuned.conf.j2
        dest: /etc/tuned/{{ item.1 }}-amdgpu-{{ item.0.name }}/tuned.conf
        owner: root
        group: root
        mode: "0644"
      with_nested:
        - "{{ amdgpu_profiles }}"
        - "{{ base_profiles }}"
      notify: restart tuned