qemu: detect vfio-pci device and its bootindex parameter

QEMU_CAPS_DEVICE_VFIO_PCI is set if the device named "vfio-pci" is
supported in the qemu binary.

QEMU_CAPS_VFIO_PCI_BOOTINDEX is set if the vfio-pci device supports
the "bootindex" parameter;  for some reason, the bootindex parameter
wasn't included in early versions of vfio support (qemu 1.4) so we
have to check for it separately from vfio itself.

src/qemu/qemu_capabilities.c

@@ -223,6 +223,8 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
 
               "nvram",  /* 140 */
               "pci-bridge", /* 141 */
+              "vfio-pci", /* 142 */
+              "vfio-pci.bootindex", /* 143 */
     );
 
 struct _virQEMUCaps {
@@ -1352,6 +1354,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
     { "rng-egd", QEMU_CAPS_OBJECT_RNG_EGD },
     { "spapr-nvram", QEMU_CAPS_DEVICE_NVRAM },
     { "pci-bridge", QEMU_CAPS_DEVICE_PCI_BRIDGE },
+    { "vfio-pci", QEMU_CAPS_DEVICE_VFIO_PCI },
 };
 
 static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBlk[] = {
@@ -1374,6 +1377,10 @@ static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsPciAssign[] = {
     { "bootindex", QEMU_CAPS_PCI_BOOTINDEX },
 };
 
+static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVfioPci[] = {
+    { "bootindex", QEMU_CAPS_VFIO_PCI_BOOTINDEX },
+};
+
 static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsScsiDisk[] = {
     { "channel", QEMU_CAPS_SCSI_DISK_CHANNEL },
     { "wwn", QEMU_CAPS_SCSI_DISK_WWN },
@@ -1420,6 +1427,8 @@ static struct virQEMUCapsObjectTypeProps virQEMUCapsObjectProps[] = {
       ARRAY_CARDINALITY(virQEMUCapsObjectPropsPciAssign) },
     { "kvm-pci-assign", virQEMUCapsObjectPropsPciAssign,
       ARRAY_CARDINALITY(virQEMUCapsObjectPropsPciAssign) },
+    { "vfio-pci", virQEMUCapsObjectPropsVfioPci,
+      ARRAY_CARDINALITY(virQEMUCapsObjectPropsVfioPci) },
     { "scsi-disk", virQEMUCapsObjectPropsScsiDisk,
       ARRAY_CARDINALITY(virQEMUCapsObjectPropsScsiDisk) },
     { "ide-drive", virQEMUCapsObjectPropsIDEDrive,

src/qemu/qemu_capabilities.h

@@ -178,9 +178,10 @@ enum virQEMUCapsFlags {
     QEMU_CAPS_MACHINE_USB_OPT    = 137, /* -machine xxx,usb=on/off */
     QEMU_CAPS_DEVICE_TPM_PASSTHROUGH = 138, /* -tpmdev passthrough */
     QEMU_CAPS_DEVICE_TPM_TIS     = 139, /* -device tpm_tis */
-
     QEMU_CAPS_DEVICE_NVRAM       = 140,  /* -global spapr-nvram.reg=xxxx */
     QEMU_CAPS_DEVICE_PCI_BRIDGE  = 141, /* -device pci-bridge */
+    QEMU_CAPS_DEVICE_VFIO_PCI    = 142, /* -device vfio-pci */
+    QEMU_CAPS_VFIO_PCI_BOOTINDEX = 143, /* bootindex param for vfio-pci device */
 
     QEMU_CAPS_LAST,                   /* this must always be the last item */
 };