# Copyright (c) 2017-2018 Intel Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
---
- name: Set iommu_boot_params for Intel
  set_fact:
    iommu_boot_params: ' intel_iommu=on iommu=pt'
  when: hostvars[inventory_hostname]['ansible_system_vendor'] == "Intel Corporation"

- name: Set iommu_boot_params for AMD
  set_fact:
    iommu_boot_params: ' amd_iommu=on iommu=pt'
  when: hostvars[inventory_hostname]['ansible_system_vendor'] == "AuthenticAMD"

- name: Define grub string for IOMMU
  set_fact:
    enable_iommu: 'GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX{{ iommu_boot_params }}'

- name: check if iommu is set by this role in {{ grub_file}}
  lineinfile:
    path: "{{ grub_file}}"
    regexp: '{{ iommu_help_string }}'
    line: '{{ iommu_help_string }}'
    state: absent
  check_mode: yes
  register: is_nsb_iommu_role
  ignore_errors: True

- name: Check if IOMMU is set by someone else
  lineinfile:
    path: "{{ grub_file}}"
    regexp: "_iommu="
    line: '{{ iommu_help_string }}'
    state: absent
  check_mode: yes
  register: is_iommu
  ignore_errors: True

- name: Send info that IOMMU is configured by someone else
  debug:
    msg: "INFO: NOT modified, IOMMU is already configured by someone."
  when:
    - not is_nsb_iommu_role.changed
    - is_iommu.changed

- name: Add IOMMU when it is not set
  lineinfile:
    path: "{{ grub_file }}"
    regexp: "{{ iommu_help_string }}"
    line: '{{ enable_iommu }}" {{ iommu_help_string }}'
  when:
    - not is_nsb_iommu_role.changed
    - not is_iommu.changed

- name: find boot grub.cfg
  find:
    paths: /boot
    file_type: file
    patterns: 'grub*.cfg'
    recurse: yes
  register: grub_files

- include: manual_modify_grub.yml
  # only tested on Ubuntu, kernel line is probably different on other distros
  with_items: "{{ grub_files.files }}"
  when: ansible_distribution == "Ubuntu"