[PATCH v2 4/8] qemu: vfio-ccw device address generation

[Boris Fiuczynski <fiuczy@xxxxxxxxxxxxx>]

From: Shalini Chellathurai Saroja <shalini@xxxxxxxxxxxxxxxxxx>

Introduces the vfio-ccw model for mediated devices and prime vfio-ccw
devices such that CCW address will be generated.

Signed-off-by: Shalini Chellathurai Saroja <shalini@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Bjoern Walk <bwalk@xxxxxxxxxxxxx>
Reviewed-by: Boris Fiuczynski <fiuczy@xxxxxxxxxxxxx>
Reviewed-by: Marc Hartmayer <mhartmay@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Stefan Zimmermann <stzi@xxxxxxxxxxxxx>
---
 docs/schemas/domaincommon.rng  |  5 ++++-
 src/qemu/qemu_domain_address.c | 20 ++++++++++++++++++++
 src/util/virmdev.c             |  3 ++-
 src/util/virmdev.h             |  1 +
 4 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 0a6b29b..bea2bc0 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -4478,7 +4478,10 @@
       <value>mdev</value>
     </attribute>
     <attribute name="model">
-      <value>vfio-pci</value>
+      <choice>
+        <value>vfio-pci</value>
+        <value>vfio-ccw</value>
+      </choice>
     </attribute>
     <element name="source">
       <ref name="mdevaddress"/>
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index 50f815c..be0424d 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -282,6 +282,23 @@ qemuDomainAssignSpaprVIOAddresses(virDomainDefPtr def)
 
 
 static void
+qemuDomainPrimeVfioDeviceAddresses(virDomainDefPtr def,
+                                      virDomainDeviceAddressType type)
+{
+    size_t i;
+
+    for (i = 0; i < def->nhostdevs; i++) {
+        virDomainHostdevSubsysPtr subsys = &def->hostdevs[i]->source.subsys;
+
+        if (virHostdevIsMdevDevice(def->hostdevs[i]) &&
+            subsys->u.mdev.model == VIR_MDEV_MODEL_TYPE_VFIO_CCW &&
+            def->hostdevs[i]->info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
+            def->hostdevs[i]->info->type = type;
+    }
+}
+
+
+static void
 qemuDomainPrimeVirtioDeviceAddresses(virDomainDefPtr def,
                                      virDomainDeviceAddressType type)
 {
@@ -397,6 +414,9 @@ qemuDomainAssignS390Addresses(virDomainDefPtr def,
 
     if (qemuDomainIsS390CCW(def) &&
         virQEMUCapsGet(qemuCaps, QEMU_CAPS_CCW)) {
+        if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VFIO_CCW))
+            qemuDomainPrimeVfioDeviceAddresses(
+                def, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW);
         qemuDomainPrimeVirtioDeviceAddresses(
             def, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW);
 
diff --git a/src/util/virmdev.c b/src/util/virmdev.c
index 536ddbe..6c51388 100644
--- a/src/util/virmdev.c
+++ b/src/util/virmdev.c
@@ -48,7 +48,8 @@ struct _virMediatedDeviceList {
 };
 
 VIR_ENUM_IMPL(virMediatedDeviceModel, VIR_MDEV_MODEL_TYPE_LAST,
-              "vfio-pci")
+              "vfio-pci",
+              "vfio-ccw")
 
 static virClassPtr virMediatedDeviceListClass;
 
diff --git a/src/util/virmdev.h b/src/util/virmdev.h
index 01ab02e..cfda2ca 100644
--- a/src/util/virmdev.h
+++ b/src/util/virmdev.h
@@ -25,6 +25,7 @@
 
 typedef enum {
     VIR_MDEV_MODEL_TYPE_VFIO_PCI = 0,
+    VIR_MDEV_MODEL_TYPE_VFIO_CCW = 1,
 
     VIR_MDEV_MODEL_TYPE_LAST
 } virMediatedDeviceModelType;
-- 
2.9.4

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