[libvirt] [PATCHv3 3/5] S390: Add support for virtio-s390 devices.
Michal Privoznik
mprivozn at redhat.com
Tue Jul 3 16:18:26 UTC 2012
On 29.06.2012 17:02, Viktor Mihajlovski wrote:
> The s390(x) architecture doesn't feature a PCI bus. For the purpose of
> supporting virtio devices a virtual bus called virtio-s390 is used.
> A new address type VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390 is used to
> distinguish the virtio devices on s390 from PCI-based virtio devices.
>
> V3 Change: updated QEMU_CAPS_VIRTIO_S390 to fit upstream.
>
> Signed-off-by: Viktor Mihajlovski <mihajlov at linux.vnet.ibm.com>
> ---
> src/conf/domain_conf.c | 11 +++-
> src/conf/domain_conf.h | 1 +
> src/qemu/qemu_capabilities.c | 7 +++
> src/qemu/qemu_capabilities.h | 1 +
> src/qemu/qemu_command.c | 98 +++++++++++++++++++++++++++++++++++++++--
> 5 files changed, 110 insertions(+), 8 deletions(-)
>
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index 4086dac..cf7c757 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -149,7 +149,8 @@ VIR_ENUM_IMPL(virDomainDeviceAddress, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST,
> "virtio-serial",
> "ccid",
> "usb",
> - "spapr-vio")
> + "spapr-vio",
> + "virtio-s390")
>
> VIR_ENUM_IMPL(virDomainDeviceAddressPciMulti,
> VIR_DOMAIN_DEVICE_ADDRESS_PCI_MULTI_LAST,
> @@ -2132,7 +2133,8 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
> virBufferAddLit(buf, "/>\n");
> }
>
> - if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
> + if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE ||
> + info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390)
> return 0;
>
> /* We'll be in domain/devices/[device type]/ so 3 level indent */
> @@ -4123,6 +4125,7 @@ virDomainControllerDefParseXML(xmlNodePtr node,
>
> if (def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
> def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO &&
> + def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390 &&
> def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
> virDomainReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> _("Controllers must use the 'pci' address type"));
> @@ -4676,6 +4679,7 @@ virDomainNetDefParseXML(virCapsPtr caps,
> * them we should make sure address type is correct */
> if (def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
> def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO &&
> + def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390 &&
> def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
> virDomainReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> _("Network interfaces must use 'pci' address type"));
> @@ -9078,7 +9082,8 @@ static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps,
>
> def->memballoon = memballoon;
> VIR_FREE(nodes);
> - } else {
> + } else if (!STREQ(def->os.arch,"s390x")) {
> + /* TODO: currently no balloon support on s390 -> no default balloon */
> if (def->virtType == VIR_DOMAIN_VIRT_XEN ||
> def->virtType == VIR_DOMAIN_VIRT_QEMU ||
> def->virtType == VIR_DOMAIN_VIRT_KQEMU ||
> diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
> index 7d5d60b..5e5374a 100644
> --- a/src/conf/domain_conf.h
> +++ b/src/conf/domain_conf.h
> @@ -172,6 +172,7 @@ enum virDomainDeviceAddressType {
> VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCID,
> VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB,
> VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO,
> + VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390,
>
> VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST
> };
> diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
> index 1e12a39..b6e5bd1 100644
> --- a/src/qemu/qemu_capabilities.c
> +++ b/src/qemu/qemu_capabilities.c
> @@ -166,6 +166,7 @@ VIR_ENUM_IMPL(qemuCaps, QEMU_CAPS_LAST,
> "hda-micro", /* 95 */
> "dump-guest-memory",
> "nec-usb-xhci",
> + "virtio-s390",
>
> );
>
> @@ -1430,6 +1431,12 @@ qemuCapsParseDeviceStr(const char *str, virBitmapPtr flags)
> qemuCapsSet(flags, QEMU_CAPS_USB_HUB);
> if (strstr(str, "name \"ich9-ahci\""))
> qemuCapsSet(flags, QEMU_CAPS_ICH9_AHCI);
> + if (strstr(str, "name \"virtio-blk-s390\""))
> + qemuCapsSet(flags, QEMU_CAPS_VIRTIO_S390);
> + if (strstr(str, "name \"virtio-net-s390\""))
> + qemuCapsSet(flags, QEMU_CAPS_VIRTIO_S390);
> + if (strstr(str, "name \"virtio-serial-s390\""))
> + qemuCapsSet(flags, QEMU_CAPS_VIRTIO_S390);
I think this could be joined into one if with ||
>
> /* Prefer -chardev spicevmc (detected earlier) over -device spicevmc */
> if (!qemuCapsGet(flags, QEMU_CAPS_CHARDEV_SPICEVMC) &&
> diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
> index 83c135b..9b5ff30 100644
> --- a/src/qemu/qemu_capabilities.h
> +++ b/src/qemu/qemu_capabilities.h
> @@ -133,6 +133,7 @@ enum qemuCapsFlags {
> QEMU_CAPS_HDA_MICRO = 95, /* -device hda-micro */
> QEMU_CAPS_DUMP_GUEST_MEMORY = 96, /* dump-guest-memory command */
> QEMU_CAPS_NEC_USB_XHCI = 97, /* -device nec-usb-xhci */
> + QEMU_CAPS_VIRTIO_S390 = 98, /* -device virtio-*-s390 */
>
> QEMU_CAPS_LAST, /* this must always be the last item */
> };
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index 5edf915..99dbc1a 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -735,6 +735,67 @@ qemuAssignDeviceAliases(virDomainDefPtr def, virBitmapPtr qemuCaps)
> return -1;
> }
>
> +static void
> +qemuDomainPrimeS390VirtioDevices(virDomainDefPtr def,
> + enum virDomainDeviceAddressType type)
> +{
> + /*
> + declare address-less virtio devices to be of address type 'type'
> + only disks, networks, consoles and controllers for now
> + */
> + int i;
> +
> + for (i = 0; i < def->ndisks ; i++) {
> + if (def->disks[i]->bus == VIR_DOMAIN_DISK_BUS_VIRTIO &&
> + def->disks[i]->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
> + def->disks[i]->info.type = type;
> + }
> +
> + for (i = 0; i < def->nnets ; i++) {
> + if (STREQ(def->nets[i]->model,"virtio") &&
> + def->nets[i]->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
> + def->nets[i]->info.type = type;
> + }
> +
> + for (i = 0; i < def->ncontrollers ; i++) {
> + if (def->controllers[i]->type ==
> + VIR_DOMAIN_CONTROLLER_TYPE_VIRTIO_SERIAL &&
> + def->controllers[i]->info.type ==
> + VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
> + def->controllers[i]->info.type = type;
> + }
> +
> +}
> +
> +static int
> +qemuDomainAssignS390Addresses(virDomainDefPtr def, virBitmapPtr qemuCaps)
> +{
> + int ret = -1;
> + virBitmapPtr localCaps = NULL;
> +
> + if (!qemuCaps) {
> + /* need to get information from real environment */
> + if (qemuCapsExtractVersionInfo(def->emulator, def->os.arch,
> + NULL,
> + &localCaps) < 0)
> + goto cleanup;
> + qemuCaps = localCaps;
> + }
> +
> + if (qemuCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_S390)) {
> + /* deal with legacy virtio-s390 */
> + qemuDomainPrimeS390VirtioDevices(
> + def, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390);
> + }
> +
> + ret = 0;
> +
> +cleanup:
> + qemuCapsFree(localCaps);
> +
> + return ret;
> +}
> +
> static int
> qemuSpaprVIOFindByReg(virDomainDefPtr def ATTRIBUTE_UNUSED,
> virDomainDeviceDefPtr device ATTRIBUTE_UNUSED,
> @@ -1001,6 +1062,10 @@ int qemuDomainAssignAddresses(virDomainDefPtr def, virBitmapPtr qemuCaps,
> if (rc)
> return rc;
>
> + rc = qemuDomainAssignS390Addresses(def, qemuCaps);
> + if (rc)
> + return rc;
> +
> return qemuDomainAssignPCIAddresses(def, qemuCaps, obj);
> }
>
> @@ -1545,7 +1610,10 @@ qemuAssignDevicePCISlots(virDomainDefPtr def, qemuDomainPCIAddressSetPtr addrs)
> if (def->disks[i]->bus != VIR_DOMAIN_DISK_BUS_VIRTIO)
> continue;
>
> - if (def->disks[i]->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI)
> + /* don't touch s390 devices */
> + if (def->disks[i]->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI ||
> + def->disks[i]->info.type ==
> + VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390)
> continue;
>
> if (def->disks[i]->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
> @@ -2020,7 +2088,13 @@ qemuBuildDriveStr(virConnectPtr conn ATTRIBUTE_UNUSED,
> break;
>
> case VIR_DOMAIN_DISK_BUS_VIRTIO:
> - /* Each virtio drive is a separate PCI device, no unit/busid or index */
> + if (qemuCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_S390) &&
> + (disk->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390)) {
> + /* Paranoia - leave in here for now */
> + qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("unexpected address type for s390-virtio disk"));
> + goto error;
> + }
> idx = -1;
> break;
>
> @@ -2450,7 +2524,12 @@ qemuBuildDriveDevStr(virDomainDefPtr def,
> disk->info.addr.drive.unit);
> break;
> case VIR_DOMAIN_DISK_BUS_VIRTIO:
> - virBufferAddLit(&opt, "virtio-blk-pci");
> + if (disk->info.type ==
> + VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390) {
> + virBufferAddLit(&opt, "virtio-blk-s390");
> + } else {
> + virBufferAddLit(&opt, "virtio-blk-pci");
> + }
> qemuBuildIoEventFdStr(&opt, disk->ioeventfd, qemuCaps);
> if (disk->event_idx &&
> qemuCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_BLK_EVENT_IDX)) {
> @@ -2708,6 +2787,9 @@ qemuBuildControllerDevStr(virDomainDefPtr domainDef,
> case VIR_DOMAIN_CONTROLLER_TYPE_VIRTIO_SERIAL:
> if (def->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
> virBufferAddLit(&buf, "virtio-serial-pci");
> + } else if (def->info.type ==
> + VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390) {
> + virBufferAddLit(&buf, "virtio-serial-s390");
> } else {
> virBufferAddLit(&buf, "virtio-serial");
> }
> @@ -2803,7 +2885,12 @@ qemuBuildNicDevStr(virDomainNetDefPtr net,
> if (!net->model) {
> nic = "rtl8139";
> } else if (STREQ(net->model, "virtio")) {
> - nic = "virtio-net-pci";
> + if (net->info.type ==
> + VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390) {
> + nic = "virtio-net-s390";
> + } else {
> + nic = "virtio-net-pci";
> + }
> usingVirtio = true;
> } else {
> nic = net->model;
> @@ -3606,7 +3693,8 @@ qemuBuildVirtioSerialPortDevStr(virDomainChrDefPtr dev,
> return NULL;
> }
>
> - if (dev->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
> + if (dev->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
> + dev->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390) {
> /* Check it's a virtio-serial address */
> if (dev->info.type !=
> VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL)
>
ACK with this squashed in:
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index b6e5bd1..9e4d927 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -1431,11 +1431,9 @@ qemuCapsParseDeviceStr(const char *str,
virBitmapPtr flags)
qemuCapsSet(flags, QEMU_CAPS_USB_HUB);
if (strstr(str, "name \"ich9-ahci\""))
qemuCapsSet(flags, QEMU_CAPS_ICH9_AHCI);
- if (strstr(str, "name \"virtio-blk-s390\""))
- qemuCapsSet(flags, QEMU_CAPS_VIRTIO_S390);
- if (strstr(str, "name \"virtio-net-s390\""))
- qemuCapsSet(flags, QEMU_CAPS_VIRTIO_S390);
- if (strstr(str, "name \"virtio-serial-s390\""))
+ if (strstr(str, "name \"virtio-blk-s390\"") ||
+ strstr(str, "name \"virtio-net-s390\"") ||
+ strstr(str, "name \"virtio-serial-s390\""))
qemuCapsSet(flags, QEMU_CAPS_VIRTIO_S390);
/* Prefer -chardev spicevmc (detected earlier) over -device spicevmc */
Michal
More information about the libvir-list
mailing list