qemu_domain_address.c 88.7 KB
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/*
 * qemu_domain_address.c: QEMU domain address
 *
 * Copyright (C) 2006-2016 Red Hat, Inc.
 * Copyright (C) 2006 Daniel P. Berrange
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.  If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * Author: Daniel P. Berrange <berrange@redhat.com>
 */

#include <config.h>

#include "qemu_domain_address.h"
#include "qemu_domain.h"
#include "viralloc.h"
#include "virerror.h"
#include "virlog.h"

#define VIR_FROM_THIS VIR_FROM_QEMU

VIR_LOG_INIT("qemu.qemu_domain_address");

#define VIO_ADDR_NET 0x1000ul
#define VIO_ADDR_SCSI 0x2000ul
#define VIO_ADDR_SERIAL 0x30000000ul
#define VIO_ADDR_NVRAM 0x3000ul


int
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qemuDomainSetSCSIControllerModel(const virDomainDef *def,
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                                 virQEMUCapsPtr qemuCaps,
                                 int *model)
{
    if (*model > 0) {
        switch (*model) {
        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSILOGIC:
            if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_SCSI_LSI)) {
                virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                               _("This QEMU doesn't support "
                                 "the LSI 53C895A SCSI controller"));
                return -1;
            }
            break;
        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VIRTIO_SCSI:
            if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_SCSI)) {
                virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                               _("This QEMU doesn't support "
                                 "virtio scsi controller"));
                return -1;
            }
            break;
        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_IBMVSCSI:
            /*TODO: need checking work here if necessary */
            break;
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        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSISAS1068:
            if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_SCSI_MPTSAS1068)) {
                virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                               _("This QEMU doesn't support "
                                 "the LSI SAS1068 (MPT Fusion) controller"));
                return -1;
            }
            break;
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        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSISAS1078:
            if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_SCSI_MEGASAS)) {
                virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                               _("This QEMU doesn't support "
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                                 "the LSI SAS1078 (MegaRAID) controller"));
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                return -1;
            }
            break;
        default:
            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                           _("Unsupported controller model: %s"),
                           virDomainControllerModelSCSITypeToString(*model));
            return -1;
        }
    } else {
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        if (qemuDomainMachineIsPSeries(def)) {
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            *model = VIR_DOMAIN_CONTROLLER_MODEL_SCSI_IBMVSCSI;
        } else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_SCSI_LSI)) {
            *model = VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSILOGIC;
        } else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_SCSI)) {
            *model = VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VIRTIO_SCSI;
        } else {
            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                           _("Unable to determine model for scsi controller"));
            return -1;
        }
    }

    return 0;
}


static int
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qemuDomainAssignVirtioSerialAddresses(virDomainDefPtr def)
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{
    int ret = -1;
    size_t i;
    virDomainVirtioSerialAddrSetPtr addrs = NULL;

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    if (!(addrs = virDomainVirtioSerialAddrSetCreateFromDomain(def)))
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        goto cleanup;

    VIR_DEBUG("Finished reserving existing ports");

    for (i = 0; i < def->nconsoles; i++) {
        virDomainChrDefPtr chr = def->consoles[i];
        if (chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE &&
            chr->targetType == VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_VIRTIO &&
            !virDomainVirtioSerialAddrIsComplete(&chr->info) &&
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            virDomainVirtioSerialAddrAutoAssignFromCache(def, addrs,
                                                         &chr->info, true) < 0)
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            goto cleanup;
    }

    for (i = 0; i < def->nchannels; i++) {
        virDomainChrDefPtr chr = def->channels[i];
        if (chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_CHANNEL &&
            chr->targetType == VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO &&
            !virDomainVirtioSerialAddrIsComplete(&chr->info) &&
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            virDomainVirtioSerialAddrAutoAssignFromCache(def, addrs,
                                                         &chr->info, false) < 0)
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            goto cleanup;
    }

    ret = 0;

 cleanup:
    virDomainVirtioSerialAddrSetFree(addrs);
    return ret;
}


static int
qemuDomainSpaprVIOFindByReg(virDomainDefPtr def ATTRIBUTE_UNUSED,
                            virDomainDeviceDefPtr device ATTRIBUTE_UNUSED,
                            virDomainDeviceInfoPtr info, void *opaque)
{
    virDomainDeviceInfoPtr target = opaque;

    if (info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO)
        return 0;

    /* Match a dev that has a reg, is not us, and has a matching reg */
    if (info->addr.spaprvio.has_reg && info != target &&
        info->addr.spaprvio.reg == target->addr.spaprvio.reg)
        /* Has to be < 0 so virDomainDeviceInfoIterate() will exit */
        return -1;

    return 0;
}


static int
qemuDomainAssignSpaprVIOAddress(virDomainDefPtr def,
                                virDomainDeviceInfoPtr info,
                                unsigned long long default_reg)
{
    bool user_reg;
    int ret;

    if (info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO)
        return 0;

    /* Check if the user has assigned the reg already, if so use it */
    user_reg = info->addr.spaprvio.has_reg;
    if (!user_reg) {
        info->addr.spaprvio.reg = default_reg;
        info->addr.spaprvio.has_reg = true;
    }

    ret = virDomainDeviceInfoIterate(def, qemuDomainSpaprVIOFindByReg, info);
    while (ret != 0) {
        if (user_reg) {
            virReportError(VIR_ERR_XML_ERROR,
                           _("spapr-vio address %#llx already in use"),
                           info->addr.spaprvio.reg);
            return -EEXIST;
        }

        /* We assigned the reg, so try a new value */
        info->addr.spaprvio.reg += 0x1000;
        ret = virDomainDeviceInfoIterate(def, qemuDomainSpaprVIOFindByReg,
                                         info);
    }

    return 0;
}


static int
qemuDomainAssignSpaprVIOAddresses(virDomainDefPtr def,
                                  virQEMUCapsPtr qemuCaps)
{
    size_t i;
    int ret = -1;
    int model;

    /* Default values match QEMU. See spapr_(llan|vscsi|vty).c */

    for (i = 0; i < def->nnets; i++) {
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        virDomainNetDefPtr net = def->nets[i];

        if (net->model &&
            STREQ(net->model, "spapr-vlan")) {
            net->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO;
        }

        if (qemuDomainAssignSpaprVIOAddress(def, &net->info, VIO_ADDR_NET) < 0)
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            goto cleanup;
    }

    for (i = 0; i < def->ncontrollers; i++) {
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        virDomainControllerDefPtr cont = def->controllers[i];

        model = cont->model;
        if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_SCSI) {
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            if (qemuDomainSetSCSIControllerModel(def, qemuCaps, &model) < 0)
                goto cleanup;
        }

        if (model == VIR_DOMAIN_CONTROLLER_MODEL_SCSI_IBMVSCSI &&
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            cont->type == VIR_DOMAIN_CONTROLLER_TYPE_SCSI) {
            cont->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO;
        }
        if (qemuDomainAssignSpaprVIOAddress(def, &cont->info,
                                            VIO_ADDR_SCSI) < 0) {
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            goto cleanup;
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        }
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    }

    for (i = 0; i < def->nserials; i++) {
        if (def->serials[i]->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL &&
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            qemuDomainMachineIsPSeries(def))
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            def->serials[i]->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO;
        if (qemuDomainAssignSpaprVIOAddress(def, &def->serials[i]->info,
                                            VIO_ADDR_SERIAL) < 0)
            goto cleanup;
    }

    if (def->nvram) {
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        if (qemuDomainMachineIsPSeries(def))
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            def->nvram->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO;
        if (qemuDomainAssignSpaprVIOAddress(def, &def->nvram->info,
                                            VIO_ADDR_NVRAM) < 0)
            goto cleanup;
    }

    /* No other devices are currently supported on spapr-vio */

    ret = 0;

 cleanup:
    return ret;
}


static void
qemuDomainPrimeVirtioDeviceAddresses(virDomainDefPtr def,
                                     virDomainDeviceAddressType type)
{
    /*
       declare address-less virtio devices to be of address type 'type'
       disks, networks, consoles, controllers, memballoon and rng in this
       order
       if type is ccw filesystem devices are declared to be of address type ccw
    */
    size_t 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++) {
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        virDomainNetDefPtr net = def->nets[i];

        if (STREQ(net->model, "virtio") &&
            net->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
            net->info.type = type;
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        }
    }

    for (i = 0; i < def->ninputs; i++) {
        if (def->inputs[i]->bus == VIR_DOMAIN_DISK_BUS_VIRTIO &&
            def->inputs[i]->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
            def->inputs[i]->info.type = type;
    }

    for (i = 0; i < def->ncontrollers; i++) {
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        virDomainControllerDefPtr cont = def->controllers[i];

        if ((cont->type == VIR_DOMAIN_CONTROLLER_TYPE_VIRTIO_SERIAL ||
             cont->type == VIR_DOMAIN_CONTROLLER_TYPE_SCSI) &&
            cont->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
            cont->info.type = type;
        }
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    }

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    for (i = 0; i < def->nhostdevs; i++) {
        if (def->hostdevs[i]->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
            def->hostdevs[i]->source.subsys.type ==
            VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST &&
            def->hostdevs[i]->info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
            def->hostdevs[i]->info->type = type;
    }

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    if (def->memballoon &&
        def->memballoon->model == VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO &&
        def->memballoon->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
        def->memballoon->info.type = type;

    for (i = 0; i < def->nrngs; i++) {
        if (def->rngs[i]->model == VIR_DOMAIN_RNG_MODEL_VIRTIO &&
            def->rngs[i]->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
            def->rngs[i]->info.type = type;
    }

    if (type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW) {
        for (i = 0; i < def->nfss; i++) {
            if (def->fss[i]->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
                def->fss[i]->info.type = type;
        }
    }
}

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virDomainCCWAddressSetPtr
qemuDomainCCWAddrSetCreateFromDomain(virDomainDefPtr def)
{
    virDomainCCWAddressSetPtr addrs = NULL;

    if (!(addrs = virDomainCCWAddressSetCreate()))
        goto error;

    if (virDomainDeviceInfoIterate(def, virDomainCCWAddressValidate,
                                   addrs) < 0)
        goto error;

    if (virDomainDeviceInfoIterate(def, virDomainCCWAddressAllocate,
                                   addrs) < 0)
        goto error;

    return addrs;

 error:
    virDomainCCWAddressSetFree(addrs);
    return NULL;
}
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/*
 * Three steps populating CCW devnos
 * 1. Allocate empty address set
 * 2. Gather addresses with explicit devno
 * 3. Assign defaults to the rest
 */
static int
qemuDomainAssignS390Addresses(virDomainDefPtr def,
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                              virQEMUCapsPtr qemuCaps)
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{
    int ret = -1;
    virDomainCCWAddressSetPtr addrs = NULL;

    if (qemuDomainMachineIsS390CCW(def) &&
        virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_CCW)) {
        qemuDomainPrimeVirtioDeviceAddresses(
            def, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW);

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        if (!(addrs = qemuDomainCCWAddrSetCreateFromDomain(def)))
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            goto cleanup;

    } else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_S390)) {
        /* deal with legacy virtio-s390 */
        qemuDomainPrimeVirtioDeviceAddresses(
            def, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390);
    }

    ret = 0;

 cleanup:
    virDomainCCWAddressSetFree(addrs);

    return ret;
}


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static int
qemuDomainHasVirtioMMIODevicesCallback(virDomainDefPtr def ATTRIBUTE_UNUSED,
                                       virDomainDeviceDefPtr dev ATTRIBUTE_UNUSED,
                                       virDomainDeviceInfoPtr info,
                                       void *opaque)
{
    if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_MMIO) {
        /* We can stop iterating as soon as we find the first
         * virtio-mmio device */
        *((bool *) opaque) = true;
        return -1;
    }

    return 0;
}


/**
 * qemuDomainHasVirtioMMIODevices:
 * @def: domain definition
 *
 * Scan @def looking for devices with a virtio-mmio address.
 *
 * Returns: true if there are any, false otherwise
 */
static bool
qemuDomainHasVirtioMMIODevices(virDomainDefPtr def)
{
    bool result = false;

    virDomainDeviceInfoIterate(def,
                               qemuDomainHasVirtioMMIODevicesCallback,
                               &result);

    return result;
}


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static void
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qemuDomainAssignARMVirtioMMIOAddresses(virDomainDefPtr def,
                                       virQEMUCapsPtr qemuCaps)
{
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    if (def->os.arch != VIR_ARCH_ARMV7L &&
        def->os.arch != VIR_ARCH_AARCH64)
        return;

    if (!(STRPREFIX(def->os.machine, "vexpress-") ||
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          qemuDomainMachineIsVirt(def)))
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        return;

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    /* We use virtio-mmio by default on mach-virt guests only if they already
     * have at least one virtio-mmio device: in all other cases, we prefer
     * virtio-pci */
    if (qemuDomainMachineHasPCIeRoot(def) &&
        !qemuDomainHasVirtioMMIODevices(def)) {
        qemuDomainPrimeVirtioDeviceAddresses(def,
                                             VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI);
    } else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VIRTIO_MMIO)) {
        qemuDomainPrimeVirtioDeviceAddresses(def,
                                             VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_MMIO);
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    }
}


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/**
 * qemuDomainDeviceCalculatePCIConnectFlags:
 *
 * @dev: The device to be checked
 * @pcieFlags: flags to use for a known PCI Express device
 * @virtioFlags: flags to use for a virtio device (properly vetted
 *       for the current qemu binary and arch/machinetype)
 *
 * Lowest level function to determine PCI connectFlags for a
 * device. This function relies on the next higher-level function
 * determining the value for pcieFlags and virtioFlags in advance -
 * this is to make it more efficient to call multiple times.
 *
 * Returns appropriate virDomainPCIConnectFlags for this device in
 * this domain, or 0 if the device doesn't connect using PCI. There
 * is no failure.
 */
static virDomainPCIConnectFlags
qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,
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                                         virQEMUDriverPtr driver,
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                                         virDomainPCIConnectFlags pcieFlags,
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                                         virDomainPCIConnectFlags virtioFlags)
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{
    virDomainPCIConnectFlags pciFlags = (VIR_PCI_CONNECT_TYPE_PCI_DEVICE |
                                         VIR_PCI_CONNECT_HOTPLUGGABLE);

    switch ((virDomainDeviceType) dev->type) {
    case VIR_DOMAIN_DEVICE_CONTROLLER: {
        virDomainControllerDefPtr cont = dev->data.controller;

        switch ((virDomainControllerType) cont->type) {
        case VIR_DOMAIN_CONTROLLER_TYPE_PCI:
            return virDomainPCIControllerModelToConnectType(cont->model);

        case VIR_DOMAIN_CONTROLLER_TYPE_SATA:
            return pciFlags;

        case VIR_DOMAIN_CONTROLLER_TYPE_USB:
            switch ((virDomainControllerModelUSB) cont->model) {
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_NEC_XHCI:
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                return pcieFlags;
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            case VIR_DOMAIN_CONTROLLER_MODEL_USB_EHCI:
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_EHCI1:
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI1:
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI2:
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI3:
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_VT82C686B_UHCI:
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_PIIX3_UHCI:
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_PIIX4_UHCI:
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_PCI_OHCI:
                return pciFlags;

            case VIR_DOMAIN_CONTROLLER_MODEL_USB_QUSB1: /* xen only */
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_QUSB2: /* xen only */
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_NONE:
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_LAST:
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                return 0;
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            }

        case VIR_DOMAIN_CONTROLLER_TYPE_IDE:
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            return pciFlags;

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        case VIR_DOMAIN_CONTROLLER_TYPE_SCSI:
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            switch ((virDomainControllerModelSCSI) cont->model) {
            case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VIRTIO_SCSI:
                return virtioFlags;

            case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_AUTO:
            case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_BUSLOGIC:
            case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSILOGIC:
            case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSISAS1068:
            case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VMPVSCSI:
            case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_IBMVSCSI:
            case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSISAS1078:
                return pciFlags;

            case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LAST:
                return 0;
            }

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        case VIR_DOMAIN_CONTROLLER_TYPE_VIRTIO_SERIAL:
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            return virtioFlags;
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        case VIR_DOMAIN_CONTROLLER_TYPE_FDC:
        case VIR_DOMAIN_CONTROLLER_TYPE_CCID:
        case VIR_DOMAIN_CONTROLLER_TYPE_LAST:
            /* should be 0 */
            return pciFlags;
        }
    }

    case VIR_DOMAIN_DEVICE_FS:
        /* the only type of filesystem so far is virtio-9p-pci */
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        return virtioFlags;
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    case VIR_DOMAIN_DEVICE_NET: {
        virDomainNetDefPtr net = dev->data.net;

        /* NB: a type='hostdev' will use PCI, but its
         * address is assigned when we're assigning the
         * addresses for other hostdev devices.
         */
        if (net->type == VIR_DOMAIN_NET_TYPE_HOSTDEV ||
            STREQ(net->model, "usb-net")) {
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            return 0;
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        }
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        if (STREQ(net->model, "virtio"))
            return  virtioFlags;

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        if (STREQ(net->model, "e1000e"))
            return pcieFlags;

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        return pciFlags;
    }

    case VIR_DOMAIN_DEVICE_SOUND:
        switch ((virDomainSoundModel) dev->data.sound->model) {
        case VIR_DOMAIN_SOUND_MODEL_ES1370:
        case VIR_DOMAIN_SOUND_MODEL_AC97:
        case VIR_DOMAIN_SOUND_MODEL_ICH6:
        case VIR_DOMAIN_SOUND_MODEL_ICH9:
            return pciFlags;

        case VIR_DOMAIN_SOUND_MODEL_SB16:
        case VIR_DOMAIN_SOUND_MODEL_PCSPK:
        case VIR_DOMAIN_SOUND_MODEL_USB:
        case VIR_DOMAIN_SOUND_MODEL_LAST:
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            return 0;
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        }

    case VIR_DOMAIN_DEVICE_DISK:
        switch ((virDomainDiskBus) dev->data.disk->bus) {
        case VIR_DOMAIN_DISK_BUS_VIRTIO:
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            return virtioFlags; /* only virtio disks use PCI */
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        case VIR_DOMAIN_DISK_BUS_IDE:
        case VIR_DOMAIN_DISK_BUS_FDC:
        case VIR_DOMAIN_DISK_BUS_SCSI:
        case VIR_DOMAIN_DISK_BUS_XEN:
        case VIR_DOMAIN_DISK_BUS_USB:
        case VIR_DOMAIN_DISK_BUS_UML:
        case VIR_DOMAIN_DISK_BUS_SATA:
        case VIR_DOMAIN_DISK_BUS_SD:
        case VIR_DOMAIN_DISK_BUS_LAST:
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            return 0;
612 613
        }

614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694
    case VIR_DOMAIN_DEVICE_HOSTDEV: {
        virDomainHostdevDefPtr hostdev = dev->data.hostdev;
        bool isExpress = false;
        virPCIDevicePtr pciDev;
        virPCIDeviceAddressPtr hostAddr = &hostdev->source.subsys.u.pci.addr;

        if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
            hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI) {
            return 0;
        }

        if (pciFlags == pcieFlags) {
            /* This arch/qemu only supports legacy PCI, so there
             * is no point in checking if the device is an Express
             * device.
             */
            return pciFlags;
        }

        if (virDeviceInfoPCIAddressPresent(hostdev->info)) {
            /* A guest-side address has already been assigned, so
             * we can avoid reading the PCI config, and just use
             * pcieFlags, since the pciConnectFlags checking is
             * more relaxed when an address is already assigned
             * than it is when we're looking for a new address (so
             * validation will pass regardless of whether we set
             * the flags to PCI or PCIe).
             */
            return pcieFlags;
        }

        if (!(pciDev = virPCIDeviceNew(hostAddr->domain,
                                       hostAddr->bus,
                                       hostAddr->slot,
                                       hostAddr->function))) {
            /* libvirt should be able to perform all the
             * operations in virPCIDeviceNew() even if it's
             * running unprivileged, so if this fails, the device
             * apparently doesn't currently exist on the host.
             * Since the overwhelming majority of assignable host
             * devices are PCIe, assume this one is too.
             */
            return pcieFlags;
        }

        if (!driver->privileged) {
            /* unprivileged libvirtd is unable to read *all* of a
             * device's PCI config (it can only read the first 64
             * bytes, which isn't enough for the check that's done
             * in virPCIDeviceIsPCIExpress()), so instead of
             * trying and failing, we make an educated guess based
             * on the length of the device's config file - if it
             * is 256 bytes, then it is definitely a legacy PCI
             * device. If it's larger than that, then it is
             * *probably PCIe (although it could be PCI-x, but
             * those are extremely rare). If the config file can't
             * be found (in which case the "length" will be -1),
             * then we blindly assume the most likely outcome -
             * PCIe.
             */
            off_t configLen
               = virFileLength(virPCIDeviceGetConfigPath(pciDev), -1);

            virPCIDeviceFree(pciDev);

            if (configLen == 256)
                return pciFlags;

            return pcieFlags;
        }

        /* If we are running with privileges, we can examine the
         * PCI config contents with virPCIDeviceIsPCIExpress() for
         * a definitive answer.
         */
        isExpress = virPCIDeviceIsPCIExpress(pciDev);
        virPCIDeviceFree(pciDev);

        if (isExpress)
            return pcieFlags;

695
        return pciFlags;
696
    }
697 698 699 700

    case VIR_DOMAIN_DEVICE_MEMBALLOON:
        switch ((virDomainMemballoonModel) dev->data.memballoon->model) {
        case VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO:
701
            return virtioFlags;
702 703 704 705

        case VIR_DOMAIN_MEMBALLOON_MODEL_XEN:
        case VIR_DOMAIN_MEMBALLOON_MODEL_NONE:
        case VIR_DOMAIN_MEMBALLOON_MODEL_LAST:
706
            return 0;
707 708 709 710 711
        }

    case VIR_DOMAIN_DEVICE_RNG:
        switch ((virDomainRNGModel) dev->data.rng->model) {
        case VIR_DOMAIN_RNG_MODEL_VIRTIO:
712
            return virtioFlags;
713 714

        case VIR_DOMAIN_RNG_MODEL_LAST:
715
            return 0;
716 717 718 719 720 721 722 723 724 725 726
        }

    case VIR_DOMAIN_DEVICE_WATCHDOG:
        /* only one model connects using PCI */
        switch ((virDomainWatchdogModel) dev->data.watchdog->model) {
        case VIR_DOMAIN_WATCHDOG_MODEL_I6300ESB:
            return pciFlags;

        case VIR_DOMAIN_WATCHDOG_MODEL_IB700:
        case VIR_DOMAIN_WATCHDOG_MODEL_DIAG288:
        case VIR_DOMAIN_WATCHDOG_MODEL_LAST:
727
            return 0;
728 729 730 731 732
        }

    case VIR_DOMAIN_DEVICE_VIDEO:
        switch ((virDomainVideoType) dev->data.video->type) {
        case VIR_DOMAIN_VIDEO_TYPE_VIRTIO:
733 734
            return virtioFlags;

735 736 737 738 739 740 741 742 743 744
        case VIR_DOMAIN_VIDEO_TYPE_VGA:
        case VIR_DOMAIN_VIDEO_TYPE_CIRRUS:
        case VIR_DOMAIN_VIDEO_TYPE_VMVGA:
        case VIR_DOMAIN_VIDEO_TYPE_XEN:
        case VIR_DOMAIN_VIDEO_TYPE_VBOX:
        case VIR_DOMAIN_VIDEO_TYPE_QXL:
        case VIR_DOMAIN_VIDEO_TYPE_PARALLELS:
            return pciFlags;

        case VIR_DOMAIN_VIDEO_TYPE_LAST:
745
            return 0;
746 747 748 749 750 751 752 753
        }

    case VIR_DOMAIN_DEVICE_SHMEM:
        return pciFlags;

    case VIR_DOMAIN_DEVICE_INPUT:
        switch ((virDomainInputBus) dev->data.input->bus) {
        case VIR_DOMAIN_INPUT_BUS_VIRTIO:
754
            return virtioFlags;
755 756 757 758 759 760

        case VIR_DOMAIN_INPUT_BUS_PS2:
        case VIR_DOMAIN_INPUT_BUS_USB:
        case VIR_DOMAIN_INPUT_BUS_XEN:
        case VIR_DOMAIN_INPUT_BUS_PARALLELS:
        case VIR_DOMAIN_INPUT_BUS_LAST:
761
            return 0;
762 763 764 765 766 767 768 769 770 771
        }

    case VIR_DOMAIN_DEVICE_CHR:
        switch ((virDomainChrSerialTargetType) dev->data.chr->targetType) {
        case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PCI:
            return pciFlags;

        case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_ISA:
        case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_USB:
        case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_LAST:
772
            return 0;
773 774
        }

775
        /* These devices don't ever connect with PCI */
776 777 778 779 780 781 782
    case VIR_DOMAIN_DEVICE_NVRAM:
    case VIR_DOMAIN_DEVICE_TPM:
    case VIR_DOMAIN_DEVICE_PANIC:
    case VIR_DOMAIN_DEVICE_MEMORY:
    case VIR_DOMAIN_DEVICE_HUB:
    case VIR_DOMAIN_DEVICE_REDIRDEV:
    case VIR_DOMAIN_DEVICE_SMARTCARD:
783
        /* These devices don't even have a DeviceInfo */
784 785 786 787 788
    case VIR_DOMAIN_DEVICE_LEASE:
    case VIR_DOMAIN_DEVICE_GRAPHICS:
    case VIR_DOMAIN_DEVICE_IOMMU:
    case VIR_DOMAIN_DEVICE_LAST:
    case VIR_DOMAIN_DEVICE_NONE:
789
        return 0;
790 791 792 793 794 795 796 797 798 799 800 801 802 803
    }

    /* We can never get here, because all cases are covered in the
     * switch, and they all return, but the compiler will still
     * complain "control reaches end of non-void function" unless
     * we add the following return.
     */
    return 0;
}


typedef struct {
    virDomainPCIConnectFlags virtioFlags;
    virDomainPCIConnectFlags pcieFlags;
804
    virQEMUDriverPtr driver;
805 806 807 808 809 810 811 812 813 814 815 816
} qemuDomainFillDevicePCIConnectFlagsIterData;


/**
 * qemuDomainFillDevicePCIConnectFlagsIterInit:
 *
 * Initialize the iterator data that is used when calling
 * qemuDomainCalculateDevicePCIConnectFlags().
 */
static void
qemuDomainFillDevicePCIConnectFlagsIterInit(virDomainDefPtr def,
                                            virQEMUCapsPtr qemuCaps,
817
                                            virQEMUDriverPtr driver,
818 819
                                            qemuDomainFillDevicePCIConnectFlagsIterData *data)
{
820 821 822

    data->driver = driver;

823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861
    if (qemuDomainMachineHasPCIeRoot(def)) {
        data->pcieFlags = (VIR_PCI_CONNECT_TYPE_PCIE_DEVICE |
                           VIR_PCI_CONNECT_HOTPLUGGABLE);
    } else {
        data->pcieFlags = (VIR_PCI_CONNECT_TYPE_PCI_DEVICE |
                           VIR_PCI_CONNECT_HOTPLUGGABLE);
    }

    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY)) {
        data->virtioFlags = data->pcieFlags;
    } else {
        data->virtioFlags = (VIR_PCI_CONNECT_TYPE_PCI_DEVICE |
                             VIR_PCI_CONNECT_HOTPLUGGABLE);
    }
}


/**
 * qemuDomainFillDevicePCIConnectFlagsIter:
 *
 * @def: the entire DomainDef
 * @dev: The device to be checked
 * @info: virDomainDeviceInfo within the device
 * @opaque: points to iterator data setup beforehand.
 *
 * Sets the pciConnectFlags for a single device's info. Has properly
 * formatted arguments to be called by virDomainDeviceInfoIterate().
 *
 * Always returns 0 - there is no failure.
 */
static int
qemuDomainFillDevicePCIConnectFlagsIter(virDomainDefPtr def ATTRIBUTE_UNUSED,
                                        virDomainDeviceDefPtr dev,
                                        virDomainDeviceInfoPtr info,
                                        void *opaque)
{
    qemuDomainFillDevicePCIConnectFlagsIterData *data = opaque;

    info->pciConnectFlags
862 863
        = qemuDomainDeviceCalculatePCIConnectFlags(dev, data->driver,
                                                   data->pcieFlags,
864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880
                                                   data->virtioFlags);
    return 0;
}


/**
 * qemuDomainFillAllPCIConnectFlags:
 *
 * @def: the entire DomainDef
 * @qemuCaps: as you'd expect
 *
 * Set the info->pciConnectFlags for all devices in the domain.
 *
 * Returns 0 on success or -1 on failure (the only possibility of
 * failure would be some internal problem with
 * virDomainDeviceInfoIterate())
 */
881
static int
882
qemuDomainFillAllPCIConnectFlags(virDomainDefPtr def,
883 884
                                 virQEMUCapsPtr qemuCaps,
                                 virQEMUDriverPtr driver)
885 886 887
{
    qemuDomainFillDevicePCIConnectFlagsIterData data;

888
    qemuDomainFillDevicePCIConnectFlagsIterInit(def, qemuCaps, driver, &data);
889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906

    return virDomainDeviceInfoIterate(def,
                                      qemuDomainFillDevicePCIConnectFlagsIter,
                                      &data);
}


/**
 * qemuDomainFillDevicePCIConnectFlags:
 *
 * @def: the entire DomainDef
 * @dev: The device to be checked
 * @qemuCaps: as you'd expect
 *
 * Set the info->pciConnectFlags for a single device.
 *
 * No return value.
 */
907
static void
908 909
qemuDomainFillDevicePCIConnectFlags(virDomainDefPtr def,
                                    virDomainDeviceDefPtr dev,
910 911
                                    virQEMUCapsPtr qemuCaps,
                                    virQEMUDriverPtr driver)
912 913 914 915 916 917 918 919 920 921 922 923 924 925 926
{
    virDomainDeviceInfoPtr info = virDomainDeviceGetInfo(dev);

    if (info) {
        /* qemuDomainDeviceCalculatePCIConnectFlags() is called with
         * the data setup in the ...IterData by ...IterInit() rather
         * than setting the values directly here.  It may seem like
         * pointless posturing, but it's done this way to eliminate
         * duplicated setup code while allowing more efficient
         * operation when it's being done repeatedly with the device
         * iterator (since qemuDomainFillAllPCIConnectFlags() only
         * calls ...IterInit() once for all devices).
         */
        qemuDomainFillDevicePCIConnectFlagsIterData data;

927
        qemuDomainFillDevicePCIConnectFlagsIterInit(def, qemuCaps, driver, &data);
928 929

        info->pciConnectFlags
930 931
            = qemuDomainDeviceCalculatePCIConnectFlags(dev, data.driver,
                                                       data.pcieFlags,
932 933 934 935 936
                                                       data.virtioFlags);
    }
}


937 938 939
static int
qemuDomainPCIAddressReserveNextAddr(virDomainPCIAddressSetPtr addrs,
                                    virDomainDeviceInfoPtr dev,
940
                                    unsigned int function)
941
{
942 943
    return virDomainPCIAddressReserveNextAddr(addrs, dev,
                                              dev->pciConnectFlags,
944
                                              function);
945 946 947 948 949
}


static int
qemuDomainPCIAddressReserveNextSlot(virDomainPCIAddressSetPtr addrs,
950
                                    virDomainDeviceInfoPtr dev)
951
{
952
    return qemuDomainPCIAddressReserveNextAddr(addrs, dev, -1);
953 954 955
}


956 957 958 959 960 961 962 963
static int
qemuDomainCollectPCIAddress(virDomainDefPtr def ATTRIBUTE_UNUSED,
                            virDomainDeviceDefPtr device,
                            virDomainDeviceInfoPtr info,
                            void *opaque)
{
    virDomainPCIAddressSetPtr addrs = opaque;
    int ret = -1;
964
    virPCIDeviceAddressPtr addr = &info->addr.pci;
965

966 967 968
    if (!virDeviceInfoPCIAddressPresent(info) ||
        ((device->type == VIR_DOMAIN_DEVICE_HOSTDEV) &&
         (device->data.hostdev->parent.type != VIR_DOMAIN_DEVICE_NONE))) {
969 970 971 972 973 974 975
        /* If a hostdev has a parent, its info will be a part of the
         * parent, and will have its address collected during the scan
         * of the parent's device type.
        */
        return 0;
    }

976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997
    /* If we get to here, the device has a PCI address assigned in the
     * config and we should mark it as in-use. But if the
     * pciConnectFlags are 0, then this device shouldn't have a PCI
     * address associated with it. *BUT* since there are cases in the
     * past where we've apparently allowed that, we need to pretend
     * for now that it's okay, otherwise an existing domain could
     * "disappear" from the list of domains due to a parse failure. We
     * can fix this by just forcing the pciConnectFlags to be
     * PCI_DEVICE (and then relying on validation functions to report
     * inappropriate address types.
     */
    if (!info->pciConnectFlags) {
        char *addrStr = virDomainPCIAddressAsString(&info->addr.pci);

        VIR_WARN("qemuDomainDeviceCalculatePCIConnectFlags() thinks that the "
                 "device with PCI address %s should not have a PCI address",
                 addrStr ? addrStr : "(unknown)");
        VIR_FREE(addrStr);

        info->pciConnectFlags = VIR_PCI_CONNECT_TYPE_PCI_DEVICE;
    }

998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025
    /* Ignore implicit controllers on slot 0:0:1.0:
     * implicit IDE controller on 0:0:1.1 (no qemu command line)
     * implicit USB controller on 0:0:1.2 (-usb)
     *
     * If the machine does have a PCI bus, they will get reserved
     * in qemuDomainAssignDevicePCISlots().
     */

    /* These are the IDE and USB controllers in the PIIX3, hardcoded
     * to bus 0 slot 1.  They cannot be attached to a PCIe slot, only
     * PCI.
     */
    if (device->type == VIR_DOMAIN_DEVICE_CONTROLLER && addr->domain == 0 &&
        addr->bus == 0 && addr->slot == 1) {
        virDomainControllerDefPtr cont = device->data.controller;

        if ((cont->type == VIR_DOMAIN_CONTROLLER_TYPE_IDE && cont->idx == 0 &&
             addr->function == 1) ||
            (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_USB && cont->idx == 0 &&
             (cont->model == VIR_DOMAIN_CONTROLLER_MODEL_USB_PIIX3_UHCI ||
              cont->model == -1) && addr->function == 2)) {
            /* Note the check for nbuses > 0 - if there are no PCI
             * buses, we skip this check. This is a quirk required for
             * some machinetypes such as s390, which pretend to have a
             * PCI bus for long enough to generate the "-usb" on the
             * commandline, but that don't really care if a PCI bus
             * actually exists. */
            if (addrs->nbuses > 0 &&
1026
                !(addrs->buses[0].flags & VIR_PCI_CONNECT_TYPE_PCI_DEVICE)) {
1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
                virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                               _("Bus 0 must be PCI for integrated PIIX3 "
                                 "USB or IDE controllers"));
                return -1;
            } else {
                return 0;
            }
        }
    }

1037 1038
    if (virDomainPCIAddressReserveSlot(addrs, addr,
                                       info->pciConnectFlags) < 0) {
1039
        goto cleanup;
1040
    }
1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053

    ret = 0;
 cleanup:
    return ret;
}

static virDomainPCIAddressSetPtr
qemuDomainPCIAddressSetCreate(virDomainDefPtr def,
                              unsigned int nbuses,
                              bool dryRun)
{
    virDomainPCIAddressSetPtr addrs;
    size_t i;
1054 1055
    bool hasPCIeRoot = false;
    virDomainControllerModelPCI defaultModel;
1056 1057 1058 1059 1060 1061 1062

    if ((addrs = virDomainPCIAddressSetAlloc(nbuses)) == NULL)
        return NULL;

    addrs->dryRun = dryRun;

    for (i = 0; i < def->ncontrollers; i++) {
1063 1064
        virDomainControllerDefPtr cont = def->controllers[i];
        size_t idx = cont->idx;
1065

1066
        if (cont->type != VIR_DOMAIN_CONTROLLER_TYPE_PCI)
1067 1068 1069 1070 1071
            continue;

        if (idx >= addrs->nbuses) {
            virReportError(VIR_ERR_INTERNAL_ERROR,
                           _("Inappropriate new pci controller index %zu "
1072
                             "exceeds addrs array length"), idx);
1073 1074 1075
            goto error;
        }

1076
        if (virDomainPCIAddressBusSetModel(&addrs->buses[idx], cont->model) < 0)
1077
            goto error;
1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113

        if (cont->model == VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT)
            hasPCIeRoot = true;
    }

    if (nbuses > 0 && !addrs->buses[0].model) {
        /* This is just here to replicate a safety measure already in
         * an older version of this code. In practice, the root bus
         * should have already been added at index 0 prior to
         * assigning addresses to devices.
         */
        if (virDomainPCIAddressBusSetModel(&addrs->buses[0],
                                           VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT) < 0)
            goto error;
    }

    /* Now fill in a reasonable model for all the buses in the set
     * that don't yet have a corresponding controller in the domain
     * config.
     */
    if (hasPCIeRoot)
        defaultModel = VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT_PORT;
    else
        defaultModel = VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE;

    for (i = 1; i < addrs->nbuses; i++) {

        if (addrs->buses[i].model)
            continue;

        if (virDomainPCIAddressBusSetModel(&addrs->buses[i], defaultModel) < 0)
            goto error;

        VIR_DEBUG("Auto-adding <controller type='pci' model='%s' index='%zu'/>",
                  virDomainControllerModelPCITypeToString(defaultModel), i);
    }
1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132

    if (virDomainDeviceInfoIterate(def, qemuDomainCollectPCIAddress, addrs) < 0)
        goto error;

    return addrs;

 error:
    virDomainPCIAddressSetFree(addrs);
    return NULL;
}


static int
qemuDomainValidateDevicePCISlotsPIIX3(virDomainDefPtr def,
                                      virQEMUCapsPtr qemuCaps,
                                      virDomainPCIAddressSetPtr addrs)
{
    int ret = -1;
    size_t i;
1133
    virPCIDeviceAddress tmp_addr;
1134 1135
    bool qemuDeviceVideoUsable = virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VIDEO_PRIMARY);
    char *addrStr = NULL;
1136 1137
    virDomainPCIConnectFlags flags = (VIR_PCI_CONNECT_HOTPLUGGABLE
                                      | VIR_PCI_CONNECT_TYPE_PCI_DEVICE);
1138 1139 1140

    /* Verify that first IDE and USB controllers (if any) is on the PIIX3, fn 1 */
    for (i = 0; i < def->ncontrollers; i++) {
1141 1142
        virDomainControllerDefPtr cont = def->controllers[i];

1143
        /* First IDE controller lives on the PIIX3 at slot=1, function=1 */
1144 1145 1146 1147 1148 1149 1150
        if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_IDE &&
            cont->idx == 0) {
            if (virDeviceInfoPCIAddressPresent(&cont->info)) {
                if (cont->info.addr.pci.domain != 0 ||
                    cont->info.addr.pci.bus != 0 ||
                    cont->info.addr.pci.slot != 1 ||
                    cont->info.addr.pci.function != 1) {
1151 1152 1153 1154 1155
                    virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                                   _("Primary IDE controller must have PCI address 0:0:1.1"));
                    goto cleanup;
                }
            } else {
1156 1157 1158 1159 1160
                cont->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
                cont->info.addr.pci.domain = 0;
                cont->info.addr.pci.bus = 0;
                cont->info.addr.pci.slot = 1;
                cont->info.addr.pci.function = 1;
1161
            }
1162 1163 1164 1165 1166 1167 1168 1169 1170
        } else if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_USB &&
                   cont->idx == 0 &&
                   (cont->model == VIR_DOMAIN_CONTROLLER_MODEL_USB_PIIX3_UHCI ||
                    cont->model == -1)) {
            if (virDeviceInfoPCIAddressPresent(&cont->info)) {
                if (cont->info.addr.pci.domain != 0 ||
                    cont->info.addr.pci.bus != 0 ||
                    cont->info.addr.pci.slot != 1 ||
                    cont->info.addr.pci.function != 2) {
1171 1172 1173 1174 1175
                    virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                                   _("PIIX3 USB controller must have PCI address 0:0:1.2"));
                    goto cleanup;
                }
            } else {
1176 1177 1178 1179 1180
                cont->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
                cont->info.addr.pci.domain = 0;
                cont->info.addr.pci.bus = 0;
                cont->info.addr.pci.slot = 1;
                cont->info.addr.pci.function = 2;
1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202
            }
        }
    }

    /* PIIX3 (ISA bridge, IDE controller, something else unknown, USB controller)
     * hardcoded slot=1, multifunction device
     */
    if (addrs->nbuses) {
        memset(&tmp_addr, 0, sizeof(tmp_addr));
        tmp_addr.slot = 1;
        if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0)
            goto cleanup;
    }

    if (def->nvideos > 0) {
        /* Because the PIIX3 integrated IDE/USB controllers are
         * already at slot 1, when qemu looks for the first free slot
         * to place the VGA controller (which is always the first
         * device added after integrated devices), it *always* ends up
         * at slot 2.
         */
        virDomainVideoDefPtr primaryVideo = def->videos[0];
1203
        if (virDeviceInfoPCIAddressWanted(&primaryVideo->info)) {
1204 1205 1206 1207 1208 1209
            memset(&tmp_addr, 0, sizeof(tmp_addr));
            tmp_addr.slot = 2;

            if (!(addrStr = virDomainPCIAddressAsString(&tmp_addr)))
                goto cleanup;
            if (!virDomainPCIAddressValidate(addrs, &tmp_addr,
1210
                                             addrStr, flags, true))
1211 1212 1213 1214
                goto cleanup;

            if (virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
                if (qemuDeviceVideoUsable) {
1215
                    if (qemuDomainPCIAddressReserveNextSlot(addrs,
1216
                                                            &primaryVideo->info) < 0) {
1217
                        goto cleanup;
1218
                    }
1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268
                } else {
                    virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                                   _("PCI address 0:0:2.0 is in use, "
                                     "QEMU needs it for primary video"));
                    goto cleanup;
                }
            } else {
                if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0)
                    goto cleanup;
                primaryVideo->info.addr.pci = tmp_addr;
                primaryVideo->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
            }
        } else if (!qemuDeviceVideoUsable) {
            if (primaryVideo->info.addr.pci.domain != 0 ||
                primaryVideo->info.addr.pci.bus != 0 ||
                primaryVideo->info.addr.pci.slot != 2 ||
                primaryVideo->info.addr.pci.function != 0) {
                virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                               _("Primary video card must have PCI address 0:0:2.0"));
                goto cleanup;
            }
            /* If TYPE == PCI, then qemuDomainCollectPCIAddress() function
             * has already reserved the address, so we must skip */
        }
    } else if (addrs->nbuses && !qemuDeviceVideoUsable) {
        memset(&tmp_addr, 0, sizeof(tmp_addr));
        tmp_addr.slot = 2;

        if (virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
            VIR_DEBUG("PCI address 0:0:2.0 in use, future addition of a video"
                      " device will not be possible without manual"
                      " intervention");
        } else if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0) {
            goto cleanup;
        }
    }
    ret = 0;
 cleanup:
    VIR_FREE(addrStr);
    return ret;
}


static int
qemuDomainValidateDevicePCISlotsQ35(virDomainDefPtr def,
                                    virQEMUCapsPtr qemuCaps,
                                    virDomainPCIAddressSetPtr addrs)
{
    int ret = -1;
    size_t i;
1269
    virPCIDeviceAddress tmp_addr;
1270 1271
    bool qemuDeviceVideoUsable = virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VIDEO_PRIMARY);
    char *addrStr = NULL;
1272
    virDomainPCIConnectFlags flags = VIR_PCI_CONNECT_TYPE_PCIE_DEVICE;
1273 1274

    for (i = 0; i < def->ncontrollers; i++) {
1275 1276 1277
        virDomainControllerDefPtr cont = def->controllers[i];

        switch (cont->type) {
1278 1279 1280 1281 1282
        case VIR_DOMAIN_CONTROLLER_TYPE_SATA:
            /* Verify that the first SATA controller is at 00:1F.2 the
             * q35 machine type *always* has a SATA controller at this
             * address.
             */
1283 1284 1285 1286 1287 1288
            if (cont->idx == 0) {
                if (virDeviceInfoPCIAddressPresent(&cont->info)) {
                    if (cont->info.addr.pci.domain != 0 ||
                        cont->info.addr.pci.bus != 0 ||
                        cont->info.addr.pci.slot != 0x1F ||
                        cont->info.addr.pci.function != 2) {
1289 1290 1291 1292 1293
                        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                                       _("Primary SATA controller must have PCI address 0:0:1f.2"));
                        goto cleanup;
                    }
                } else {
1294 1295 1296 1297 1298
                    cont->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
                    cont->info.addr.pci.domain = 0;
                    cont->info.addr.pci.bus = 0;
                    cont->info.addr.pci.slot = 0x1F;
                    cont->info.addr.pci.function = 2;
1299 1300 1301 1302 1303
                }
            }
            break;

        case VIR_DOMAIN_CONTROLLER_TYPE_USB:
1304 1305
            if ((cont->model == VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI1) &&
                (cont->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)) {
1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326
                /* Try to assign the first found USB2 controller to
                 * 00:1D.0 and 2nd to 00:1A.0 (because that is their
                 * standard location on real Q35 hardware) unless they
                 * are already taken, but don't insist on it.
                 *
                 * (NB: all other controllers at the same index will
                 * get assigned to the same slot as the UHCI1 when
                 * addresses are later assigned to all devices.)
                 */
                bool assign = false;

                memset(&tmp_addr, 0, sizeof(tmp_addr));
                tmp_addr.slot = 0x1D;
                if (!virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
                    assign = true;
                } else {
                    tmp_addr.slot = 0x1A;
                    if (!virDomainPCIAddressSlotInUse(addrs, &tmp_addr))
                        assign = true;
                }
                if (assign) {
1327 1328
                    if (virDomainPCIAddressReserveSlot(addrs,
                                                       &tmp_addr, flags) < 0) {
1329
                        goto cleanup;
1330 1331
                    }

1332 1333 1334 1335 1336 1337
                    cont->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
                    cont->info.addr.pci.domain = 0;
                    cont->info.addr.pci.bus = 0;
                    cont->info.addr.pci.slot = tmp_addr.slot;
                    cont->info.addr.pci.function = 0;
                    cont->info.addr.pci.multi = VIR_TRISTATE_SWITCH_ON;
1338 1339 1340 1341 1342
                }
            }
            break;

        case VIR_DOMAIN_CONTROLLER_TYPE_PCI:
1343 1344
            if (cont->model == VIR_DOMAIN_CONTROLLER_MODEL_DMI_TO_PCI_BRIDGE &&
                cont->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
1345 1346 1347 1348 1349 1350 1351
                /* Try to assign this bridge to 00:1E.0 (because that
                * is its standard location on real hardware) unless
                * it's already taken, but don't insist on it.
                */
                memset(&tmp_addr, 0, sizeof(tmp_addr));
                tmp_addr.slot = 0x1E;
                if (!virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
1352 1353
                    if (virDomainPCIAddressReserveSlot(addrs,
                                                       &tmp_addr, flags) < 0) {
1354
                        goto cleanup;
1355 1356
                    }

1357 1358 1359 1360 1361
                    cont->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
                    cont->info.addr.pci.domain = 0;
                    cont->info.addr.pci.bus = 0;
                    cont->info.addr.pci.slot = 0x1E;
                    cont->info.addr.pci.function = 0;
1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377
                }
            }
            break;
        }
    }

    /* Reserve slot 0x1F function 0 (ISA bridge, not in config model)
     * and function 3 (SMBus, also not (yet) in config model). As with
     * the SATA controller, these devices are always present in a q35
     * machine; there is no way to not have them.
     */
    if (addrs->nbuses) {
        memset(&tmp_addr, 0, sizeof(tmp_addr));
        tmp_addr.slot = 0x1F;
        tmp_addr.function = 0;
        tmp_addr.multi = VIR_TRISTATE_SWITCH_ON;
1378
        if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0)
1379
           goto cleanup;
1380

1381 1382
        tmp_addr.function = 3;
        tmp_addr.multi = VIR_TRISTATE_SWITCH_ABSENT;
1383
        if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0)
1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394
           goto cleanup;
    }

    if (def->nvideos > 0) {
        /* NB: unlike the pc machinetypes, on q35 machinetypes the
         * integrated devices are at slot 0x1f, so when qemu looks for
         * the first free lot for the first VGA, it will always be at
         * slot 1 (which was used up by the integrated PIIX3 devices
         * on pc machinetypes).
         */
        virDomainVideoDefPtr primaryVideo = def->videos[0];
1395
        if (virDeviceInfoPCIAddressWanted(&primaryVideo->info)) {
1396 1397 1398 1399 1400 1401
            memset(&tmp_addr, 0, sizeof(tmp_addr));
            tmp_addr.slot = 1;

            if (!(addrStr = virDomainPCIAddressAsString(&tmp_addr)))
                goto cleanup;
            if (!virDomainPCIAddressValidate(addrs, &tmp_addr,
1402
                                             addrStr, flags, true))
1403 1404 1405 1406
                goto cleanup;

            if (virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
                if (qemuDeviceVideoUsable) {
1407
                    if (qemuDomainPCIAddressReserveNextSlot(addrs,
1408
                                                            &primaryVideo->info) < 0)
1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442
                        goto cleanup;
                } else {
                    virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                                   _("PCI address 0:0:1.0 is in use, "
                                     "QEMU needs it for primary video"));
                    goto cleanup;
                }
            } else {
                if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0)
                    goto cleanup;
                primaryVideo->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
                primaryVideo->info.addr.pci = tmp_addr;
            }
        } else if (!qemuDeviceVideoUsable) {
            if (primaryVideo->info.addr.pci.domain != 0 ||
                primaryVideo->info.addr.pci.bus != 0 ||
                primaryVideo->info.addr.pci.slot != 1 ||
                primaryVideo->info.addr.pci.function != 0) {
                virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                               _("Primary video card must have PCI address 0:0:1.0"));
                goto cleanup;
            }
            /* If TYPE == PCI, then qemuDomainCollectPCIAddress() function
             * has already reserved the address, so we must skip */
        }
    } else if (addrs->nbuses && !qemuDeviceVideoUsable) {
        memset(&tmp_addr, 0, sizeof(tmp_addr));
        tmp_addr.slot = 1;

        if (virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
            VIR_DEBUG("PCI address 0:0:1.0 in use, future addition of a video"
                      " device will not be possible without manual"
                      " intervention");
            virResetLastError();
1443 1444
        } else if (virDomainPCIAddressReserveSlot(addrs,
                                                  &tmp_addr, flags) < 0) {
1445 1446 1447
            goto cleanup;
        }
    }
1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473

    memset(&tmp_addr, 0, sizeof(tmp_addr));
    tmp_addr.slot = 0x1B;
    if (!virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
        /* Since real Q35 hardware has an ICH9 chip that has an
         * integrated HD audio device at 0000:00:1B.0 put any
         * unaddressed ICH9 audio device at that address if it's not
         * already taken. If there's something already there, let the
         * normal device addressing assign something later.
         */
        for (i = 0; i < def->nsounds; i++) {
            virDomainSoundDefPtr sound = def->sounds[i];

            if (sound->model != VIR_DOMAIN_SOUND_MODEL_ICH9 ||
                !virDeviceInfoPCIAddressWanted(&sound->info)) {
                continue;
            }
            if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0)
                goto cleanup;

            sound->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
            sound->info.addr.pci = tmp_addr;
            break;
        }
    }

1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505
    ret = 0;
 cleanup:
    VIR_FREE(addrStr);
    return ret;
}


static int
qemuDomainValidateDevicePCISlotsChipsets(virDomainDefPtr def,
                                         virQEMUCapsPtr qemuCaps,
                                         virDomainPCIAddressSetPtr addrs)
{
    if (qemuDomainMachineIsI440FX(def) &&
        qemuDomainValidateDevicePCISlotsPIIX3(def, qemuCaps, addrs) < 0) {
        return -1;
    }

    if (qemuDomainMachineIsQ35(def) &&
        qemuDomainValidateDevicePCISlotsQ35(def, qemuCaps, addrs) < 0) {
        return -1;
    }

    return 0;
}


static bool
qemuDomainPCIBusFullyReserved(virDomainPCIAddressBusPtr bus)
{
    size_t i;

    for (i = bus->minSlot; i <= bus->maxSlot; i++)
1506
        if (!bus->slot[i].functions)
1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557
            return false;

    return true;
}


/*
 * This assigns static PCI slots to all configured devices.
 * The ordering here is chosen to match the ordering used
 * with old QEMU < 0.12, so that if a user updates a QEMU
 * host from old QEMU to QEMU >= 0.12, their guests should
 * get PCI addresses in the same order as before.
 *
 * NB, if they previously hotplugged devices then all bets
 * are off. Hotplug for old QEMU was unfixably broken wrt
 * to stable PCI addressing.
 *
 * Order is:
 *
 *  - Host bridge (slot 0)
 *  - PIIX3 ISA bridge, IDE controller, something else unknown, USB controller (slot 1)
 *  - Video (slot 2)
 *
 *  - These integrated devices were already added by
 *    qemuValidateDevicePCISlotsChipsets invoked right before this function
 *
 * Incrementally assign slots from 3 onwards:
 *
 *  - Net
 *  - Sound
 *  - SCSI controllers
 *  - VirtIO block
 *  - VirtIO balloon
 *  - Host device passthrough
 *  - Watchdog
 *  - pci serial devices
 *
 * Prior to this function being invoked, qemuDomainCollectPCIAddress() will have
 * added all existing PCI addresses from the 'def' to 'addrs'. Thus this
 * function must only try to reserve addresses if info.type == NONE and
 * skip over info.type == PCI
 */
static int
qemuDomainAssignDevicePCISlots(virDomainDefPtr def,
                               virQEMUCapsPtr qemuCaps,
                               virDomainPCIAddressSetPtr addrs)
{
    size_t i, j;

    /* PCI controllers */
    for (i = 0; i < def->ncontrollers; i++) {
1558 1559 1560 1561
        virDomainControllerDefPtr cont = def->controllers[i];

        if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI) {
            virDomainControllerModelPCI model = cont->model;
1562

1563 1564
            if (model == VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT ||
                model == VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT ||
1565
                !virDeviceInfoPCIAddressWanted(&cont->info))
1566
                continue;
1567

1568
            if (qemuDomainPCIAddressReserveNextSlot(addrs, &cont->info) < 0)
1569 1570 1571 1572 1573
                goto error;
        }
    }

    for (i = 0; i < def->nfss; i++) {
1574
        if (!virDeviceInfoPCIAddressWanted(&def->fss[i]->info))
1575 1576 1577 1578
            continue;

        /* Only support VirtIO-9p-pci so far. If that changes,
         * we might need to skip devices here */
1579
        if (qemuDomainPCIAddressReserveNextSlot(addrs, &def->fss[i]->info) < 0)
1580 1581 1582 1583 1584
            goto error;
    }

    /* Network interfaces */
    for (i = 0; i < def->nnets; i++) {
1585 1586
        virDomainNetDefPtr net = def->nets[i];

1587 1588 1589 1590
        /* type='hostdev' network devices might be USB, and are also
         * in hostdevs list anyway, so handle them with other hostdevs
         * instead of here.
         */
1591 1592
        if ((net->type == VIR_DOMAIN_NET_TYPE_HOSTDEV) ||
            !virDeviceInfoPCIAddressWanted(&net->info)) {
1593 1594
            continue;
        }
1595 1596

        if (qemuDomainPCIAddressReserveNextSlot(addrs, &net->info) < 0)
1597 1598 1599 1600 1601
            goto error;
    }

    /* Sound cards */
    for (i = 0; i < def->nsounds; i++) {
1602 1603 1604
        virDomainSoundDefPtr sound = def->sounds[i];

        if (!virDeviceInfoPCIAddressWanted(&sound->info))
1605
            continue;
1606

1607
        /* Skip ISA sound card, PCSPK and usb-audio */
1608 1609 1610
        if (sound->model == VIR_DOMAIN_SOUND_MODEL_SB16 ||
            sound->model == VIR_DOMAIN_SOUND_MODEL_PCSPK ||
            sound->model == VIR_DOMAIN_SOUND_MODEL_USB) {
1611
            continue;
1612
        }
1613

1614
        if (qemuDomainPCIAddressReserveNextSlot(addrs, &sound->info) < 0)
1615 1616 1617 1618 1619
            goto error;
    }

    /* Device controllers (SCSI, USB, but not IDE, FDC or CCID) */
    for (i = 0; i < def->ncontrollers; i++) {
1620 1621
        virDomainControllerDefPtr cont = def->controllers[i];

1622
        /* PCI controllers have been dealt with earlier */
1623
        if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI)
1624 1625 1626
            continue;

        /* USB controller model 'none' doesn't need a PCI address */
1627 1628
        if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_USB &&
            cont->model == VIR_DOMAIN_CONTROLLER_MODEL_USB_NONE)
1629 1630 1631
            continue;

        /* FDC lives behind the ISA bridge; CCID is a usb device */
1632 1633
        if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_FDC ||
            cont->type == VIR_DOMAIN_CONTROLLER_TYPE_CCID)
1634 1635 1636 1637
            continue;

        /* First IDE controller lives on the PIIX3 at slot=1, function=1,
           dealt with earlier on*/
1638 1639
        if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_IDE &&
            cont->idx == 0)
1640 1641
            continue;

1642
        if (!virDeviceInfoPCIAddressWanted(&cont->info))
1643 1644 1645
            continue;

        /* USB2 needs special handling to put all companions in the same slot */
1646
        if (IS_USB2_CONTROLLER(cont)) {
1647
            virPCIDeviceAddress addr = {0};
1648 1649 1650 1651
            bool foundAddr = false;

            for (j = 0; j < def->ncontrollers; j++) {
                if (IS_USB2_CONTROLLER(def->controllers[j]) &&
1652
                    def->controllers[j]->idx == cont->idx &&
1653
                    virDeviceInfoPCIAddressPresent(&def->controllers[j]->info)) {
1654 1655 1656 1657 1658 1659
                    addr = def->controllers[j]->info.addr.pci;
                    foundAddr = true;
                    break;
                }
            }

1660
            switch (cont->model) {
1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_EHCI1:
                addr.function = 7;
                addr.multi = VIR_TRISTATE_SWITCH_ABSENT;
                break;
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI1:
                addr.function = 0;
                addr.multi = VIR_TRISTATE_SWITCH_ON;
                break;
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI2:
                addr.function = 1;
                addr.multi = VIR_TRISTATE_SWITCH_ABSENT;
                break;
            case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI3:
                addr.function = 2;
                addr.multi = VIR_TRISTATE_SWITCH_ABSENT;
                break;
            }

1679 1680
            if (foundAddr) {
                /* Reserve this function on the slot we found */
1681 1682
                if (virDomainPCIAddressReserveSlot(addrs, &addr,
                                                   cont->info.pciConnectFlags) < 0) {
1683
                    goto error;
1684
                }
1685

1686 1687 1688 1689 1690
                cont->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
                cont->info.addr.pci = addr;
            } else {
                /* This is the first part of the controller, so need
                 * to find a free slot & then reserve this function */
1691
                if (qemuDomainPCIAddressReserveNextAddr(addrs, &cont->info,
1692
                                                        addr.function) < 0) {
1693 1694
                    goto error;
                }
1695

1696
                cont->info.addr.pci.multi = addr.multi;
1697 1698
            }
        } else {
1699 1700
            if (qemuDomainPCIAddressReserveNextSlot(addrs, &cont->info) < 0)
                 goto error;
1701 1702 1703 1704 1705 1706 1707 1708 1709 1710
        }
    }

    /* Disks (VirtIO only for now) */
    for (i = 0; i < def->ndisks; i++) {
        /* Only VirtIO disks use PCI addrs */
        if (def->disks[i]->bus != VIR_DOMAIN_DISK_BUS_VIRTIO)
            continue;

        /* don't touch s390 devices */
1711
        if (virDeviceInfoPCIAddressPresent(&def->disks[i]->info) ||
1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723
            def->disks[i]->info.type ==
            VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390 ||
            def->disks[i]->info.type ==
            VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW)
            continue;

        /* Also ignore virtio-mmio disks if our machine allows them */
        if (def->disks[i]->info.type ==
            VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_MMIO &&
            virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VIRTIO_MMIO))
            continue;

1724
        if (!virDeviceInfoPCIAddressWanted(&def->disks[i]->info)) {
1725 1726 1727 1728 1729 1730
            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                           _("virtio disk cannot have an address of type '%s'"),
                           virDomainDeviceAddressTypeToString(def->disks[i]->info.type));
            goto error;
        }

1731
        if (qemuDomainPCIAddressReserveNextSlot(addrs, &def->disks[i]->info) < 0)
1732 1733 1734 1735 1736
            goto error;
    }

    /* Host PCI devices */
    for (i = 0; i < def->nhostdevs; i++) {
1737
        if (!virDeviceInfoPCIAddressWanted(def->hostdevs[i]->info))
1738
            continue;
1739 1740 1741 1742
        if (def->hostdevs[i]->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
            continue;
        if (def->hostdevs[i]->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
            def->hostdevs[i]->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST)
1743 1744
            continue;

1745 1746
        if (qemuDomainPCIAddressReserveNextSlot(addrs,
                                                def->hostdevs[i]->info) < 0)
1747 1748 1749 1750 1751 1752
            goto error;
    }

    /* VirtIO balloon */
    if (def->memballoon &&
        def->memballoon->model == VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO &&
1753
        virDeviceInfoPCIAddressWanted(&def->memballoon->info)) {
1754

1755 1756
        if (qemuDomainPCIAddressReserveNextSlot(addrs,
                                                &def->memballoon->info) < 0)
1757 1758 1759 1760 1761 1762
            goto error;
    }

    /* VirtIO RNG */
    for (i = 0; i < def->nrngs; i++) {
        if (def->rngs[i]->model != VIR_DOMAIN_RNG_MODEL_VIRTIO ||
1763
            !virDeviceInfoPCIAddressWanted(&def->rngs[i]->info))
1764 1765
            continue;

1766
        if (qemuDomainPCIAddressReserveNextSlot(addrs, &def->rngs[i]->info) < 0)
1767 1768 1769 1770 1771 1772
            goto error;
    }

    /* A watchdog - check if it is a PCI device */
    if (def->watchdog &&
        def->watchdog->model == VIR_DOMAIN_WATCHDOG_MODEL_I6300ESB &&
1773
        virDeviceInfoPCIAddressWanted(&def->watchdog->info)) {
1774
        if (qemuDomainPCIAddressReserveNextSlot(addrs, &def->watchdog->info) < 0)
1775 1776 1777 1778 1779 1780
            goto error;
    }

    /* Assign a PCI slot to the primary video card if there is not an
     * assigned address. */
    if (def->nvideos > 0 &&
1781
        virDeviceInfoPCIAddressWanted(&def->videos[0]->info)) {
1782
        if (qemuDomainPCIAddressReserveNextSlot(addrs, &def->videos[0]->info) < 0)
1783 1784 1785 1786
            goto error;
    }

    for (i = 1; i < def->nvideos; i++) {
1787
        if (!virDeviceInfoPCIAddressWanted(&def->videos[i]->info))
1788
            continue;
1789 1790

        if (qemuDomainPCIAddressReserveNextSlot(addrs, &def->videos[i]->info) < 0)
1791 1792 1793 1794 1795
            goto error;
    }

    /* Shared Memory */
    for (i = 0; i < def->nshmems; i++) {
1796
        if (!virDeviceInfoPCIAddressWanted(&def->shmems[i]->info))
1797 1798
            continue;

1799
        if (qemuDomainPCIAddressReserveNextSlot(addrs, &def->shmems[i]->info) < 0)
1800 1801 1802
            goto error;
    }
    for (i = 0; i < def->ninputs; i++) {
1803 1804
        if (def->inputs[i]->bus != VIR_DOMAIN_INPUT_BUS_VIRTIO ||
            !virDeviceInfoPCIAddressWanted(&def->inputs[i]->info))
1805 1806
            continue;

1807
        if (qemuDomainPCIAddressReserveNextSlot(addrs, &def->inputs[i]->info) < 0)
1808 1809 1810 1811 1812 1813 1814 1815
            goto error;
    }
    for (i = 0; i < def->nparallels; i++) {
        /* Nada - none are PCI based (yet) */
    }
    for (i = 0; i < def->nserials; i++) {
        virDomainChrDefPtr chr = def->serials[i];

1816 1817
        if (chr->targetType != VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PCI ||
            !virDeviceInfoPCIAddressWanted(&chr->info))
1818 1819
            continue;

1820
        if (qemuDomainPCIAddressReserveNextSlot(addrs, &chr->info) < 0)
1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846
            goto error;
    }
    for (i = 0; i < def->nchannels; i++) {
        /* Nada - none are PCI based (yet) */
    }
    for (i = 0; i < def->nhubs; i++) {
        /* Nada - none are PCI based (yet) */
    }

    return 0;

 error:
    return -1;
}


static bool
qemuDomainSupportsPCI(virDomainDefPtr def,
                      virQEMUCapsPtr qemuCaps)
{
    if ((def->os.arch != VIR_ARCH_ARMV7L) && (def->os.arch != VIR_ARCH_AARCH64))
        return true;

    if (STREQ(def->os.machine, "versatilepb"))
        return true;

J
Ján Tomko 已提交
1847
    if (qemuDomainMachineIsVirt(def) &&
1848 1849 1850 1851 1852 1853 1854
        virQEMUCapsGet(qemuCaps, QEMU_CAPS_OBJECT_GPEX))
        return true;

    return false;
}


1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878
static void
qemuDomainPCIControllerSetDefaultModelName(virDomainControllerDefPtr cont)
{
    int *modelName = &cont->opts.pciopts.modelName;

    /* make sure it's not already set */
    if (*modelName != VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_NONE)
        return;
    switch ((virDomainControllerModelPCI)cont->model) {
    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE:
        *modelName = VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_PCI_BRIDGE;
        break;
    case VIR_DOMAIN_CONTROLLER_MODEL_DMI_TO_PCI_BRIDGE:
        *modelName = VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_I82801B11_BRIDGE;
        break;
    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT_PORT:
        *modelName = VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_IOH3420;
        break;
    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_UPSTREAM_PORT:
        *modelName = VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_X3130_UPSTREAM;
        break;
    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_DOWNSTREAM_PORT:
        *modelName = VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_XIO3130_DOWNSTREAM;
        break;
1879
    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_EXPANDER_BUS:
1880 1881
        *modelName = VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_PXB;
        break;
1882
    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_EXPANDER_BUS:
1883 1884
        *modelName = VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_PXB_PCIE;
        break;
1885 1886 1887 1888 1889 1890 1891 1892
    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT:
    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT:
    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_LAST:
        break;
    }
}


1893 1894 1895 1896 1897 1898 1899 1900 1901 1902
static int
qemuDomainAddressFindNewBusNr(virDomainDefPtr def)
{
/* Try to find a nice default for busNr for a new pci-expander-bus.
 * This is a bit tricky, since you need to satisfy the following:
 *
 * 1) There need to be enough unused bus numbers between busNr of this
 *    bus and busNr of the next highest bus for the guest to assign a
 *    unique bus number to each PCI bus that is a child of this
 *    bus. Each PCI controller. On top of this, the pxb device (which
1903
 *    implements the pci-expander-bus) includes a pci-bridge within
1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941
 *    it, and that bridge also uses one bus number (so each pxb device
 *    requires at least 2 bus numbers).
 *
 * 2) There need to be enough bus numbers *below* this for all the
 *    child controllers of the pci-expander-bus with the next lower
 *    busNr (or the pci-root bus if there are no lower
 *    pci-expander-buses).
 *
 * 3) If at all possible, we want to avoid needing to change the busNr
 *    of a bus in the future, as that changes the guest's device ABI,
 *    which could potentially lead to issues with a guest OS that is
 *    picky about such things.
 *
 *  Due to the impossibility of predicting what might be added to the
 *  config in the future, we can't make a foolproof choice, but since
 *  a pci-expander-bus (pxb) has slots for 32 devices, and the only
 *  practical use for it is to assign real devices on a particular
 *  NUMA node in the host, it's reasonably safe to assume it should
 *  never need any additional child buses (probably only a few of the
 *  32 will ever be used). So for pci-expander-bus we find the lowest
 *  existing busNr, and set this one to the current lowest - 2 (one
 *  for the pxb, one for the intergrated pci-bridge), thus leaving the
 *  maximum possible bus numbers available for other buses plugged
 *  into pci-root (i.e. pci-bridges and other
 *  pci-expander-buses). Anyone who needs more than 32 devices
 *  descended from one pci-expander-bus should set the busNr manually
 *  in the config.
 *
 *  There is room for more error checking here - in particular we
 *  can/should determine the ultimate parent (root-bus) of each PCI
 *  controller and determine if there is enough space for all the
 *  buses within the current range allotted to the bus just prior to
 *  this one.
 */
    size_t i;
    int lowestBusNr = 256;

    for (i = 0; i < def->ncontrollers; i++) {
1942 1943 1944 1945
        virDomainControllerDefPtr cont = def->controllers[i];

        if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI) {
            int thisBusNr = cont->opts.pciopts.busNr;
1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962

            if (thisBusNr >= 0 && thisBusNr < lowestBusNr)
                lowestBusNr = thisBusNr;
        }
    }

    /* If we already have a busNR = 1, then we can't auto-assign (0 is
     * the pci[e]-root, and the others may have been assigned
     * purposefully).
     */
    if (lowestBusNr <= 2)
        return -1;

    return lowestBusNr - 2;
}


1963 1964 1965
static int
qemuDomainAssignPCIAddresses(virDomainDefPtr def,
                             virQEMUCapsPtr qemuCaps,
1966
                             virQEMUDriverPtr driver,
1967 1968 1969 1970 1971
                             virDomainObjPtr obj)
{
    int ret = -1;
    virDomainPCIAddressSetPtr addrs = NULL;
    qemuDomainObjPrivatePtr priv = NULL;
1972 1973 1974 1975
    int max_idx = -1;
    int nbuses = 0;
    size_t i;
    int rv;
1976

1977
    for (i = 0; i < def->ncontrollers; i++) {
1978 1979 1980 1981 1982
        virDomainControllerDefPtr cont = def->controllers[i];

        if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI) {
            if ((int) cont->idx > max_idx)
                max_idx = cont->idx;
1983
        }
1984
    }
1985

1986
    nbuses = max_idx + 1;
1987

1988 1989 1990 1991
    /* set the connect type flags (pci vs. pcie) in the DeviceInfo
     * of all devices. This will be used to pick an appropriate
     * bus when assigning addresses.
     */
1992
    if (qemuDomainFillAllPCIConnectFlags(def, qemuCaps, driver) < 0)
1993 1994
        goto cleanup;

1995 1996
    if (nbuses > 0 &&
        virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_PCI_BRIDGE)) {
1997

1998 1999 2000
        /* 1st pass to figure out how many PCI bridges we need */
        if (!(addrs = qemuDomainPCIAddressSetCreate(def, nbuses, true)))
            goto cleanup;
2001

2002 2003 2004
        if (qemuDomainValidateDevicePCISlotsChipsets(def, qemuCaps,
                                                     addrs) < 0)
            goto cleanup;
2005

2006 2007 2008 2009 2010 2011 2012 2013
        /* For domains that have pci-root, reserve 1 extra slot for a
         * (potential) bridge (for future expansion) only if buses are
         * not fully reserved yet (if all buses are fully reserved
         * with manually/previously assigned addresses, any attempt to
         * reserve an extra slot would fail anyway. But if all buses
         * are *not* fully reserved, this extra reservation might push
         * the config to add a new pci-bridge to plug into the final
         * available slot, thus preserving the ability to expand)
2014
         *
2015 2016 2017 2018
         * We only do this for those domains that have pci-root, since
         * those with pcie-root will usually want to expand using PCIe
         * controllers, which we will do after assigning addresses for
         * all *actual* devices.
2019
         */
2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042

        if (qemuDomainMachineHasPCIRoot(def)) {
            /* This is a dummy info used to reserve a slot for a
             * legacy PCI device that doesn't exist, but may in the
             * future, e.g.  if another device is hotplugged into the
             * domain.
             */
            virDomainDeviceInfo info = {
                .pciConnectFlags = (VIR_PCI_CONNECT_HOTPLUGGABLE |
                                    VIR_PCI_CONNECT_TYPE_PCI_DEVICE)
            };
            bool buses_reserved = true;

            for (i = 0; i < addrs->nbuses; i++) {
                if (!qemuDomainPCIBusFullyReserved(&addrs->buses[i])) {
                    buses_reserved = false;
                    break;
                }
            }
            if (!buses_reserved &&
                qemuDomainPCIAddressReserveNextSlot(addrs, &info) < 0)
                goto cleanup;
        }
2043

2044 2045
        if (qemuDomainAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
            goto cleanup;
2046

2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078
        /* Only for *new* domains with pcie-root (and no other
         * manually specified PCI controllers in the definition): If,
         * after assigning addresses/reserving slots for all devices,
         * we see that any extra buses have been auto-added, we
         * understand that the application has left management of PCI
         * addresses and controllers up to libvirt. In order to allow
         * such applications to easily support hotplug, we will do a
         * "one time" reservation of one extra PCIE|HOTPLUGGABLE
         * slots, which should cause us to auto-add 1 extra
         * pcie-root-port. The single slot in this root-port will be
         * available for hotplug, or may also be used when a device is
         * added to the config offline.
         */

        if (max_idx <= 0 &&
            addrs->nbuses > max_idx + 1 &&
            qemuDomainMachineHasPCIeRoot(def)) {
            virDomainDeviceInfo info = {
                .pciConnectFlags = (VIR_PCI_CONNECT_HOTPLUGGABLE |
                                    VIR_PCI_CONNECT_TYPE_PCIE_DEVICE)
            };

            /* if there isn't an empty pcie-root-port, this will
             * cause one to be added
             */
            if (qemuDomainPCIAddressReserveNextSlot(addrs, &info) < 0)
               goto cleanup;
        }

        /* now reflect any controllers auto-added to addrs into the
         * domain controllers list
         */
2079
        for (i = 1; i < addrs->nbuses; i++) {
2080 2081
            virDomainDeviceDef dev;
            int contIndex;
2082
            virDomainPCIAddressBusPtr bus = &addrs->buses[i];
2083

2084 2085 2086 2087
            if ((rv = virDomainDefMaybeAddController(
                     def, VIR_DOMAIN_CONTROLLER_TYPE_PCI,
                     i, bus->model)) < 0)
                goto cleanup;
2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110

            if (rv == 0)
                continue; /* no new controller added */

            /* We did add a new controller, so we will need one more
             * address (and we need to set the new controller's
             * pciConnectFlags)
             */
            contIndex = virDomainControllerFind(def,
                                                VIR_DOMAIN_CONTROLLER_TYPE_PCI,
                                                i);
            if (contIndex < 0) {
                /* this should never happen - we just added it */
                virReportError(VIR_ERR_INTERNAL_ERROR,
                               _("Could not find auto-added %s controller "
                                 "with index %zu"),
                               virDomainControllerModelPCITypeToString(bus->model),
                               i);
                goto cleanup;
            }
            dev.type = VIR_DOMAIN_DEVICE_CONTROLLER;
            dev.data.controller = def->controllers[contIndex];
            /* set connect flags so it will be properly addressed */
2111
            qemuDomainFillDevicePCIConnectFlags(def, &dev, qemuCaps, driver);
2112 2113
            if (qemuDomainPCIAddressReserveNextSlot(addrs,
                                                    &dev.data.controller->info) < 0)
2114
                goto cleanup;
2115
        }
2116

2117 2118 2119
        nbuses = addrs->nbuses;
        virDomainPCIAddressSetFree(addrs);
        addrs = NULL;
2120

2121 2122 2123 2124 2125 2126
    } else if (max_idx > 0) {
        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                       _("PCI bridges are not supported "
                         "by this QEMU binary"));
        goto cleanup;
    }
2127

2128 2129
    if (!(addrs = qemuDomainPCIAddressSetCreate(def, nbuses, false)))
        goto cleanup;
2130

2131 2132 2133 2134
    if (qemuDomainSupportsPCI(def, qemuCaps)) {
        if (qemuDomainValidateDevicePCISlotsChipsets(def, qemuCaps,
                                                     addrs) < 0)
            goto cleanup;
2135

2136 2137
        if (qemuDomainAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
            goto cleanup;
2138

2139 2140 2141 2142 2143
        /* set multi attribute for devices at function 0 of
         * any slot that has multiple functions in use
         */
        virDomainPCIAddressSetAllMulti(def);

2144 2145 2146 2147 2148
        for (i = 0; i < def->ncontrollers; i++) {
            virDomainControllerDefPtr cont = def->controllers[i];
            int idx = cont->idx;
            virPCIDeviceAddressPtr addr;
            virDomainPCIControllerOptsPtr options;
2149

2150 2151
            if (cont->type != VIR_DOMAIN_CONTROLLER_TYPE_PCI)
                continue;
2152

2153 2154
            addr = &cont->info.addr.pci;
            options = &cont->opts.pciopts;
2155

2156 2157 2158 2159 2160
            /* set default model name (the actual name of the
             * device in qemu) for any controller that doesn't yet
             * have it set.
             */
            qemuDomainPCIControllerSetDefaultModelName(cont);
2161

2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187
            /* set defaults for any other auto-generated config
             * options for this controller that haven't been
             * specified in config.
             */
            switch ((virDomainControllerModelPCI)cont->model) {
            case VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE:
                if (options->chassisNr == -1)
                    options->chassisNr = cont->idx;
                break;
            case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT_PORT:
                if (options->chassis == -1)
                   options->chassis = cont->idx;
                if (options->port == -1)
                   options->port = (addr->slot << 3) + addr->function;
                break;
            case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_DOWNSTREAM_PORT:
                if (options->chassis == -1)
                   options->chassis = cont->idx;
                if (options->port == -1)
                   options->port = addr->slot;
                break;
            case VIR_DOMAIN_CONTROLLER_MODEL_PCI_EXPANDER_BUS:
            case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_EXPANDER_BUS:
                if (options->busNr == -1)
                    options->busNr = qemuDomainAddressFindNewBusNr(def);
                if (options->busNr == -1) {
2188
                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
2189 2190 2191 2192 2193
                                   _("No free busNr lower than current "
                                     "lowest busNr is available to "
                                     "auto-assign to bus %d. Must be "
                                     "manually assigned"),
                                   addr->bus);
2194 2195
                    goto cleanup;
                }
2196 2197 2198 2199 2200 2201 2202 2203 2204
                break;
            case VIR_DOMAIN_CONTROLLER_MODEL_DMI_TO_PCI_BRIDGE:
            case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_UPSTREAM_PORT:
            case VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT:
            case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT:
            case VIR_DOMAIN_CONTROLLER_MODEL_PCI_LAST:
                break;
            }

2205
            /* check if every PCI bridge controller's index is larger than
2206 2207 2208 2209 2210 2211
             * the bus it is placed onto
             */
            if (cont->model == VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE &&
                idx <= addr->bus) {
                virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                               _("PCI controller at index %d (0x%02x) has "
2212 2213
                                 "bus='0x%02x', but index must be "
                                 "larger than bus"),
2214 2215
                               idx, idx, addr->bus);
                goto cleanup;
2216 2217 2218 2219 2220 2221
            }
        }
    }

    if (obj && obj->privateData) {
        priv = obj->privateData;
J
John Ferlan 已提交
2222 2223 2224 2225
        /* if this is the live domain object, we persist the PCI addresses */
        virDomainPCIAddressSetFree(priv->pciaddrs);
        priv->pciaddrs = addrs;
        addrs = NULL;
2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236
    }

    ret = 0;

 cleanup:
    virDomainPCIAddressSetFree(addrs);

    return ret;
}


J
Ján Tomko 已提交
2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293
struct qemuAssignUSBIteratorInfo {
    virDomainUSBAddressSetPtr addrs;
    size_t count;
};


static int
qemuDomainAssignUSBPortsIterator(virDomainDeviceInfoPtr info,
                                 void *opaque)
{
    struct qemuAssignUSBIteratorInfo *data = opaque;

    if (info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
        return 0;

    return virDomainUSBAddressAssign(data->addrs, info);
}


static int
qemuDomainAssignUSBHubs(virDomainUSBAddressSetPtr addrs,
                        virDomainDefPtr def)
{
    size_t i;

    for (i = 0; i < def->nhubs; i++) {
        virDomainHubDefPtr hub = def->hubs[i];
        if (hub->type != VIR_DOMAIN_HUB_TYPE_USB)
            continue;

        if (hub->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB &&
            virDomainUSBAddressPortIsValid(hub->info.addr.usb.port))
            continue;
        if (virDomainUSBAddressAssign(addrs, &hub->info) < 0)
            return -1;

        if (virDomainUSBAddressSetAddHub(addrs, hub) < 0)
            return -1;
    }

    return 0;
}


static int
qemuDomainAssignUSBPorts(virDomainUSBAddressSetPtr addrs,
                         virDomainDefPtr def)
{
    struct qemuAssignUSBIteratorInfo data = { .addrs = addrs };

    return virDomainUSBDeviceDefForeach(def,
                                        qemuDomainAssignUSBPortsIterator,
                                        &data,
                                        true);
}


2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338
static int
qemuDomainAssignUSBPortsCounter(virDomainDeviceInfoPtr info ATTRIBUTE_UNUSED,
                                void *opaque)
{
    struct qemuAssignUSBIteratorInfo *data = opaque;

    data->count++;
    return 0;
}


static int
qemuDomainUSBAddressAddHubs(virDomainDefPtr def)
{
    struct qemuAssignUSBIteratorInfo data = { .count = 0 };
    virDomainHubDefPtr hub = NULL;
    size_t available_ports;
    int ret = -1;

    available_ports = virDomainUSBAddressCountAllPorts(def);
    ignore_value(virDomainUSBDeviceDefForeach(def,
                                              qemuDomainAssignUSBPortsCounter,
                                              &data,
                                              false));
    VIR_DEBUG("Found %zu USB devices and %zu provided USB ports",
              data.count, available_ports);

    /* Add one hub if there are more devices than ports
     * otherwise it's up to the user to specify more hubs/controllers */
    if (data.count > available_ports) {
        if (VIR_ALLOC(hub) < 0)
            return -1;
        hub->type = VIR_DOMAIN_HUB_TYPE_USB;

        if (VIR_APPEND_ELEMENT(def->hubs, def->nhubs, hub) < 0)
            goto cleanup;
    }

    ret = 0;
 cleanup:
    VIR_FREE(hub);
    return ret;
}


2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370
static virBitmapPtr
qemuDomainGetMemorySlotMap(const virDomainDef *def)
{
    virBitmapPtr ret;
    virDomainMemoryDefPtr mem;
    size_t i;

    if (!(ret = virBitmapNew(def->mem.memory_slots)))
        return NULL;

    for (i = 0; i < def->nmems; i++) {
        mem = def->mems[i];

        if (mem->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DIMM)
            ignore_value(virBitmapSetBit(ret, mem->info.addr.dimm.slot));
    }

    return ret;
}


static int
qemuAssignMemoryDeviceSlot(virDomainMemoryDefPtr mem,
                           virBitmapPtr slotmap)
{
    ssize_t nextslot = -1;

    if (mem->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DIMM)
        return 0;

    if ((nextslot = virBitmapNextClearBit(slotmap, -1)) < 0) {
        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
Y
Yuri Chornoivan 已提交
2371
                       _("failed to find an empty memory slot"));
2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426
        return -1;
    }

    ignore_value(virBitmapSetBit(slotmap, nextslot));
    mem->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DIMM;
    mem->info.addr.dimm.slot = nextslot;

    return 0;
}


int
qemuDomainAssignMemoryDeviceSlot(virDomainDefPtr def,
                                 virDomainMemoryDefPtr mem)
{
    virBitmapPtr slotmap = NULL;
    int ret;

    if (!(slotmap = qemuDomainGetMemorySlotMap(def)))
        return -1;

    ret = qemuAssignMemoryDeviceSlot(mem, slotmap);

    virBitmapFree(slotmap);
    return ret;
}


static int
qemuDomainAssignMemorySlots(virDomainDefPtr def)
{
    virBitmapPtr slotmap = NULL;
    int ret = -1;
    size_t i;

    if (!virDomainDefHasMemoryHotplug(def))
        return 0;

    if (!(slotmap = qemuDomainGetMemorySlotMap(def)))
        return -1;

    for (i = 0; i < def->nmems; i++) {
        if (qemuAssignMemoryDeviceSlot(def->mems[i], slotmap) < 0)
            goto cleanup;
    }

    ret = 0;

 cleanup:
    virBitmapFree(slotmap);
    return ret;

}


J
Ján Tomko 已提交
2427 2428
static int
qemuDomainAssignUSBAddresses(virDomainDefPtr def,
2429 2430
                             virDomainObjPtr obj,
                             bool newDomain)
J
Ján Tomko 已提交
2431 2432 2433 2434 2435
{
    int ret = -1;
    virDomainUSBAddressSetPtr addrs = NULL;
    qemuDomainObjPrivatePtr priv = NULL;

2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446
    if (!newDomain) {
        /* only create the address cache for:
         *  new domains
         *  domains that already have all the addresses specified
         * otherwise libvirt's attempt to recreate the USB topology via
         * QEMU command line might fail */
        if (virDomainUSBDeviceDefForeach(def, virDomainUSBAddressPresent, NULL,
                                         false) < 0)
            return 0;
    }

J
Ján Tomko 已提交
2447 2448 2449
    if (!(addrs = virDomainUSBAddressSetCreate()))
        goto cleanup;

2450 2451 2452
    if (qemuDomainUSBAddressAddHubs(def) < 0)
        goto cleanup;

J
Ján Tomko 已提交
2453 2454 2455 2456 2457 2458 2459 2460 2461
    if (virDomainUSBAddressSetAddControllers(addrs, def) < 0)
        goto cleanup;

    if (virDomainUSBDeviceDefForeach(def, virDomainUSBAddressReserve, addrs,
                                     true) < 0)
        goto cleanup;

    VIR_DEBUG("Existing USB addresses have been reserved");

J
Ján Tomko 已提交
2462 2463 2464 2465 2466 2467 2468 2469
    if (qemuDomainAssignUSBHubs(addrs, def) < 0)
        goto cleanup;

    if (qemuDomainAssignUSBPorts(addrs, def) < 0)
        goto cleanup;

    VIR_DEBUG("Finished assigning USB ports");

J
Ján Tomko 已提交
2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482
    if (obj && obj->privateData) {
        priv = obj->privateData;
        priv->usbaddrs = addrs;
        addrs = NULL;
    }
    ret = 0;

 cleanup:
    virDomainUSBAddressSetFree(addrs);
    return ret;
}


2483 2484 2485
int
qemuDomainAssignAddresses(virDomainDefPtr def,
                          virQEMUCapsPtr qemuCaps,
2486
                          virQEMUDriverPtr driver,
2487
                          virDomainObjPtr obj,
J
Ján Tomko 已提交
2488
                          bool newDomain)
2489
{
2490
    if (qemuDomainAssignVirtioSerialAddresses(def) < 0)
2491
        return -1;
2492

2493 2494
    if (qemuDomainAssignSpaprVIOAddresses(def, qemuCaps) < 0)
        return -1;
2495

T
Tomasz Flendrich 已提交
2496
    if (qemuDomainAssignS390Addresses(def, qemuCaps) < 0)
2497
        return -1;
2498

2499
    qemuDomainAssignARMVirtioMMIOAddresses(def, qemuCaps);
2500

2501
    if (qemuDomainAssignPCIAddresses(def, qemuCaps, driver, obj) < 0)
2502 2503
        return -1;

2504
    if (qemuDomainAssignUSBAddresses(def, obj, newDomain) < 0)
J
Ján Tomko 已提交
2505 2506
        return -1;

2507 2508 2509
    if (qemuDomainAssignMemorySlots(def) < 0)
        return -1;

2510
    return 0;
2511 2512
}

2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529
/**
 * qemuDomainEnsurePCIAddress:
 *
 * @obj: the virDomainObjPtr for the domain. This will include
 *       qemuCaps and address cache (if there is one)
 *
 * @dev: the device that we need to ensure has a PCI address
 *
 * if @dev should have a PCI address but doesn't, assign an address on
 * a compatible PCI bus, and set it in @dev->...info. If there is an
 * address already, validate that it is on a compatible bus, based on
 * @dev->...info.pciConnectFlags.
 *
 * returns 0 on success -1 on failure.
 */
int
qemuDomainEnsurePCIAddress(virDomainObjPtr obj,
2530 2531
                           virDomainDeviceDefPtr dev,
                           virQEMUDriverPtr driver)
2532 2533 2534 2535 2536 2537 2538
{
    qemuDomainObjPrivatePtr priv = obj->privateData;
    virDomainDeviceInfoPtr info = virDomainDeviceGetInfo(dev);

    if (!info)
        return 0;

2539
    qemuDomainFillDevicePCIConnectFlags(obj->def, dev, priv->qemuCaps, driver);
2540 2541 2542 2543

    return virDomainPCIAddressEnsureAddr(priv->pciaddrs, info,
                                         info->pciConnectFlags);
}
2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554

void
qemuDomainReleaseDeviceAddress(virDomainObjPtr vm,
                               virDomainDeviceInfoPtr info,
                               const char *devstr)
{
    qemuDomainObjPrivatePtr priv = vm->privateData;

    if (!devstr)
        devstr = info->alias;

T
Tomasz Flendrich 已提交
2555 2556 2557
    if (virDeviceInfoPCIAddressPresent(info) &&
        virDomainPCIAddressReleaseSlot(priv->pciaddrs,
                                       &info->addr.pci) < 0)
2558 2559
        VIR_WARN("Unable to release PCI address on %s",
                 NULLSTR(devstr));
2560

2561 2562 2563 2564 2565
    if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB &&
        priv->usbaddrs &&
        virDomainUSBAddressRelease(priv->usbaddrs, info) < 0)
        VIR_WARN("Unable to release USB address on %s",
                 NULLSTR(devstr));
2566
}