Re: [libvirt] [RFC v3 PATCH 5/5] PowerPC : Add address-type "spapr-vio"

From: Michael Ellerman&lt;michael(a)ellerman.id.au&gt; Date: Tue, 29 Nov 2011 13:48:09 +0530 Subject: [PATCH 5/5] Add address-type "spapr-vio" for devices based on the same bus. For QEMU PPC64 we have a machine type ("pseries") which has a virtual bus called "spapr-vio". We need to be able to create devices on this bus, and as such need a way to specify the address for those devices. This patch adds a new address type "spapr-vio", which achieves this. The addressing is specified with a "reg" property in the address definition. The reg is optional, if it is not specified QEMU will auto-assign an address for the device. Additionally, this patch forces an "spapr-vscsi" controller to be selected for a guest running on architecture 'ppc64' and platform 'pseries'. Signed-off-by: Michael Ellerman&lt;michael(a)ellerman.id.au&gt; Signed-off-by: Prerna Saxena&lt;prerna(a)linux.vnet.ibm.com&gt; --- src/conf/domain_conf.c | 42 +++++++++++++++++++++++++++++++++++++++++- src/conf/domain_conf.h | 9 +++++++++ src/qemu/qemu_command.c | 18 ++++++++++++++---- src/qemu/qemu_command.h | 3 ++- src/qemu/qemu_hotplug.c | 2 +- 5 files changed, 67 insertions(+), 7 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 3ea99f7..5c3809e 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -139,7 +139,8 @@ VIR_ENUM_IMPL(virDomainDeviceAddress, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST, "drive", "virtio-serial", "ccid", - "usb") + "usb", + "spapr-vio") VIR_ENUM_IMPL(virDomainDeviceAddressPciMulti, VIR_DOMAIN_DEVICE_ADDRESS_PCI_MULTI_LAST, @@ -1844,6 +1845,11 @@ virDomainDeviceInfoFormat(virBufferPtr buf, info->addr.usb.port); break; + case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO: + if (info->addr.spaprvio.has_reg) + virBufferAsprintf(buf, " reg='%#llx'", info->addr.spaprvio.reg); + break; + default: virDomainReportError(VIR_ERR_INTERNAL_ERROR, _("unknown address type '%d'"), info->type); @@ -2103,6 +2109,34 @@ cleanup: } static int +virDomainDeviceSpaprVioAddressParseXML(xmlNodePtr node, + virDomainDeviceSpaprVioAddressPtr addr) +{ + char *reg; + int ret; + + memset(addr, 0, sizeof(*addr)); + addr->has_reg = false; + + reg = virXMLPropString(node, "reg"); + if (reg) { + if (virStrToLong_ull(reg, NULL, 16,&addr->reg)< 0) { + virDomainReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Cannot parse<address> 'reg' attribute")); + ret = -1; + goto cleanup; + } + + addr->has_reg = true; + } + + ret = 0; +cleanup: + VIR_FREE(reg); + return ret; +} + +static int virDomainDeviceUSBMasterParseXML(xmlNodePtr node, virDomainDeviceUSBMasterPtr master) { @@ -2215,6 +2249,11 @@ virDomainDeviceInfoParseXML(xmlNodePtr node, goto cleanup; break; + case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO: + if (virDomainDeviceSpaprVioAddressParseXML(address,&info->addr.spaprvio)< 0) + goto cleanup; + break; + default: /* Should not happen */ virDomainReportError(VIR_ERR_INTERNAL_ERROR, @@ -3048,6 +3087,7 @@ 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_PCI) { virDomainReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Controllers must use the 'pci' address type"));

diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 4439f55..b1f9260 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -69,6 +69,7 @@ enum virDomainDeviceAddressType { VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCID, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB, + VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST }; @@ -121,6 +122,13 @@ struct _virDomainDeviceUSBAddress { char *port; }; +typedef struct _virDomainDeviceSpaprVioAddress virDomainDeviceSpaprVioAddress; +typedef virDomainDeviceSpaprVioAddress *virDomainDeviceSpaprVioAddressPtr; +struct _virDomainDeviceSpaprVioAddress { + unsigned long long reg; + bool has_reg; +}; + enum virDomainControllerMaster { VIR_DOMAIN_CONTROLLER_MASTER_NONE, VIR_DOMAIN_CONTROLLER_MASTER_USB, @@ -145,6 +153,7 @@ struct _virDomainDeviceInfo { virDomainDeviceVirtioSerialAddress vioserial; virDomainDeviceCcidAddress ccid; virDomainDeviceUSBAddress usb; + virDomainDeviceSpaprVioAddress spaprvio; } addr; int mastertype; union { diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 57b25d6..0d03fbc 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -1253,6 +1253,8 @@ qemuAssignDevicePCISlots(virDomainDefPtr def, qemuDomainPCIAddressSetPtr addrs) def->controllers[i]->idx == 0) continue; + if (def->controllers[i]->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO) + continue; if (def->controllers[i]->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) continue; if (qemuDomainPCIAddressSetNextAddr(addrs,&def->controllers[i]->info)< 0) @@ -1403,6 +1405,9 @@ qemuBuildDeviceAddressStr(virBufferPtr buf, virBufferAsprintf(buf, ",bus="); qemuUsbId(buf, info->addr.usb.bus); virBufferAsprintf(buf, ".0,port=%s", info->addr.usb.port); + } else if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO) { + if (info->addr.spaprvio.has_reg) + virBufferAsprintf(buf, ",reg=%#llx", info->addr.spaprvio.reg); } return 0; @@ -2087,7 +2092,8 @@ qemuBuildUSBControllerDevStr(virDomainControllerDefPtr def, } char * -qemuBuildControllerDevStr(virDomainControllerDefPtr def, +qemuBuildControllerDevStr(virDomainDefPtr domainDef, + virDomainControllerDefPtr def, virBitmapPtr qemuCaps, int *nusbcontroller) { @@ -2095,7 +2101,11 @@ qemuBuildControllerDevStr(virDomainControllerDefPtr def, switch (def->type) { case VIR_DOMAIN_CONTROLLER_TYPE_SCSI: - virBufferAddLit(&buf, "lsi"); + if (STREQ(domainDef->os.arch, "ppc64")&& STREQ(domainDef->os.machine, "pseries")) { + virBufferAddLit(&buf, "spapr-vscsi"); + } else { + virBufferAddLit(&buf, "lsi"); + } virBufferAsprintf(&buf, ",id=scsi%d", def->idx); break; @@ -4009,7 +4019,7 @@ qemuBuildCommandLine(virConnectPtr conn, char *devstr; virCommandAddArg(cmd, "-device"); - if (!(devstr = qemuBuildControllerDevStr(cont, qemuCaps, NULL))) + if (!(devstr = qemuBuildControllerDevStr(def, cont, qemuCaps, NULL))) goto error; virCommandAddArg(cmd, devstr); @@ -4028,7 +4038,7 @@ qemuBuildCommandLine(virConnectPtr conn, virCommandAddArg(cmd, "-device"); char *devstr; - if (!(devstr = qemuBuildControllerDevStr(def->controllers[i], qemuCaps, + if (!(devstr = qemuBuildControllerDevStr(def, def->controllers[i], qemuCaps, &usbcontroller))) goto error; diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h index 1fe0394..3978b2b 100644 --- a/src/qemu/qemu_command.h +++ b/src/qemu/qemu_command.h @@ -95,7 +95,8 @@ char * qemuBuildDriveDevStr(virDomainDiskDefPtr disk, char * qemuBuildFSDevStr(virDomainFSDefPtr fs, virBitmapPtr qemuCaps); /* Current, best practice */ -char * qemuBuildControllerDevStr(virDomainControllerDefPtr def, +char * qemuBuildControllerDevStr(virDomainDefPtr domainDef, + virDomainControllerDefPtr def, virBitmapPtr qemuCaps, int *nusbcontroller); diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 96c0070..eabfeaa 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -329,7 +329,7 @@ int qemuDomainAttachPciControllerDevice(struct qemud_driver *driver, goto cleanup; } - if (!(devstr = qemuBuildControllerDevStr(controller, priv->qemuCaps, NULL))) { + if (!(devstr = qemuBuildControllerDevStr(vm->def, controller, priv->qemuCaps, NULL))) { goto cleanup; } }