qapi: Create DEFINE_PROP_OFF_AUTO_PCIBAR

Add an option which allows the user to specify a PCI BAR number,
including an 'off' and 'auto' selection.

Cc: Markus Armbruster <armbru@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Tested-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: NEric Auger <eric.auger@redhat.com>
Tested-by: NEric Auger <eric.auger@redhat.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

hw/core/qdev-properties.c

@@ -1317,3 +1317,14 @@ const PropertyInfo qdev_prop_link = {
     .name = "link",
     .create = create_link_property,
 };
+
+/* --- OffAutoPCIBAR off/auto/bar0/bar1/bar2/bar3/bar4/bar5 --- */
+
+const PropertyInfo qdev_prop_off_auto_pcibar = {
+    .name = "OffAutoPCIBAR",
+    .description = "off/auto/bar0/bar1/bar2/bar3/bar4/bar5",
+    .enum_table = &OffAutoPCIBAR_lookup,
+    .get = get_enum,
+    .set = set_enum,
+    .set_default_value = set_default_value_enum,
+};

include/hw/qdev-properties.h

@@ -34,6 +34,7 @@ extern const PropertyInfo qdev_prop_pci_host_devaddr;
 extern const PropertyInfo qdev_prop_uuid;
 extern const PropertyInfo qdev_prop_arraylen;
 extern const PropertyInfo qdev_prop_link;
+extern const PropertyInfo qdev_prop_off_auto_pcibar;
 
 #define DEFINE_PROP(_name, _state, _field, _prop, _type) { \
         .name      = (_name),                                    \
@@ -214,6 +215,9 @@ extern const PropertyInfo qdev_prop_link;
     DEFINE_PROP(_n, _s, _f, qdev_prop_pci_host_devaddr, PCIHostDeviceAddress)
 #define DEFINE_PROP_MEMORY_REGION(_n, _s, _f)             \
     DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, MemoryRegion *)
+#define DEFINE_PROP_OFF_AUTO_PCIBAR(_n, _s, _f, _d) \
+    DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_off_auto_pcibar, \
+                        OffAutoPCIBAR)
 
 #define DEFINE_PROP_UUID(_name, _state, _field) {                  \
         .name      = (_name),                                      \

qapi/common.json

@@ -100,3 +100,29 @@
 { 'alternate': 'StrOrNull',
   'data': { 's': 'str',
             'n': 'null' } }
+
+##
+# @OffAutoPCIBAR:
+#
+# An enumeration of options for specifying a PCI BAR
+#
+# @off: The specified feature is disabled
+#
+# @auto: The PCI BAR for the feature is automatically selected
+#
+# @bar0: PCI BAR0 is used for the feature
+#
+# @bar1: PCI BAR1 is used for the feature
+#
+# @bar2: PCI BAR2 is used for the feature
+#
+# @bar3: PCI BAR3 is used for the feature
+#
+# @bar4: PCI BAR4 is used for the feature
+#
+# @bar5: PCI BAR5 is used for the feature
+#
+# Since: 2.12
+##
+{ 'enum': 'OffAutoPCIBAR',
+  'data': [ 'off', 'auto', 'bar0', 'bar1', 'bar2', 'bar3', 'bar4', 'bar5' ] }