Add Trusted Computing Module (TPM) support

lib/fog/libvirt/models/compute/tpm.rb

@@ -0,0 +1,64 @@
+require 'fog/core/model'
+
+module Fog
+  module Libvirt
+    class Compute
+      class TPM < Fog::Model
+        # Currently Qemu only allows for one TPM device
+
+        identity  :id
+        attribute :model
+        attribute :type
+        attribute :version
+        attribute :device_path
+        attribute :spapr_address_type
+        attribute :spapr_address_reg
+
+        # Models
+        #   crb - TCG PC Client Platform TPM Profile (PTP) Specification (2017)
+        #   tis - TCG PC Client Specific TPM Interface Specification (TIS) (2013)
+        #   spapr - Used with pSeries (ppc64)
+        #   spapr-tpm-proxy - Used with pSeries (ppc64), this is only used with 'passthrough' type
+        #
+        MODELS = ['crb', 'tis', 'spapr', 'spapr-tpm-proxy']
+
+        # Versions
+        #
+        VERSIONS = ['1.2', '2.0']
+
+        # Types
+        #
+        TYPES = ['emulator', 'passthrough']
+
+        def initialize(attributes={})
+          super defaults.merge(attributes)
+          raise Fog::Errors::Error.new("#{model} is not a supported tpm model") if new? && !MODELS.include?(model) 
+          raise Fog::Errors::Error.new("#{type} is not a supported tpm type") if new? && !TYPES.include?(type)
+        end
+
+        def new?
+          id.nil?
+        end
+
+        def save
+          raise Fog::Errors::Error.new('Creating a new tpm device is not yet implemented. Contributions welcome!')
+        end
+
+        def destroy
+          raise Fog::Errors::Error.new('Destroying a tpm device is not yet implemented. Contributions welcome!')
+        end
+
+        def defaults
+          {
+            :model => "crb",
+            :type => "emulator",
+            :version => "2.0",
+            :device_path => "/dev/tpm0",
+            :spapr_address_type => "spapr-vio",
+            :spapr_address_reg => "0x00004000",
+          }
+        end
+      end
+    end
+  end
+end