Commit 29241067 authored by Emanuele Giuseppe Esposito's avatar Emanuele Giuseppe Esposito Committed by Paolo Bonzini
Browse files

tests/libqos: virtio-balloon driver and interface nodes 



Add qgraph nodes for virtio-balloon-pci and virtio-balloon-device.
Both nodes produce virtio-balloon, but virtio-balloon-pci receives
a pci-bus and uses virtio-pci QOSGraphObject and functions,
while virtio-balloon-device receives a virtio and implements
its own functions

Signed-off-by: default avatarEmanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent dfbe8b43

tests/Makefile.include

+1 −0
Original line number Diff line number Diff line
@@ -746,6 +746,7 @@ qos-test-obj-y += tests/libqos/e1000e.o 
qos-test-obj-y += tests/libqos/sdhci.o

qos-test-obj-y += $(libqos-virtio-obj-y)

qos-test-obj-$(CONFIG_VIRTFS) += tests/libqos/virtio-9p.o

qos-test-obj-y += tests/libqos/virtio-balloon.o

qos-test-obj-y += tests/libqos/virtio-serial.o



# Machines

tests/libqos/virtio-balloon.c

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Original line number Diff line number Diff line 
/*

 * libqos driver framework

 *

 * Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License version 2 as published by the Free Software Foundation.

 *

 * 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/>

 */



#include "qemu/osdep.h"

#include "libqtest.h"

#include "libqos/qgraph.h"

#include "libqos/virtio-balloon.h"



/* virtio-balloon-device */

static void *qvirtio_balloon_get_driver(QVirtioBalloon *v_balloon,

                                        const char *interface)

{

    if (!g_strcmp0(interface, "virtio-balloon")) {

        return v_balloon;

    }

    if (!g_strcmp0(interface, "virtio")) {

        return v_balloon->vdev;

    }



    fprintf(stderr, "%s not present in virtio-balloon-device\n", interface);

    g_assert_not_reached();

}



static void *qvirtio_balloon_device_get_driver(void *object,

                                               const char *interface)

{

    QVirtioBalloonDevice *v_balloon = object;

    return qvirtio_balloon_get_driver(&v_balloon->balloon, interface);

}



static void *virtio_balloon_device_create(void *virtio_dev,

                                          QGuestAllocator *t_alloc,

                                          void *addr)

{

    QVirtioBalloonDevice *virtio_bdevice = g_new0(QVirtioBalloonDevice, 1);

    QVirtioBalloon *interface = &virtio_bdevice->balloon;



    interface->vdev = virtio_dev;



    virtio_bdevice->obj.get_driver = qvirtio_balloon_device_get_driver;



    return &virtio_bdevice->obj;

}



/* virtio-balloon-pci */

static void *qvirtio_balloon_pci_get_driver(void *object,

                                            const char *interface)

{

    QVirtioBalloonPCI *v_balloon = object;

    if (!g_strcmp0(interface, "pci-device")) {

        return v_balloon->pci_vdev.pdev;

    }

    return qvirtio_balloon_get_driver(&v_balloon->balloon, interface);

}



static void *virtio_balloon_pci_create(void *pci_bus, QGuestAllocator *t_alloc,

                                  void *addr)

{

    QVirtioBalloonPCI *virtio_bpci = g_new0(QVirtioBalloonPCI, 1);

    QVirtioBalloon *interface = &virtio_bpci->balloon;

    QOSGraphObject *obj = &virtio_bpci->pci_vdev.obj;





    virtio_pci_init(&virtio_bpci->pci_vdev, pci_bus, addr);

    interface->vdev = &virtio_bpci->pci_vdev.vdev;



    obj->get_driver = qvirtio_balloon_pci_get_driver;



    return obj;

}



static void virtio_balloon_register_nodes(void)

{

    QPCIAddress addr = {

        .devfn = QPCI_DEVFN(4, 0),

    };



    QOSGraphEdgeOptions opts = {

        .extra_device_opts = "addr=04.0",

    };



    /* virtio-balloon-device */

    qos_node_create_driver("virtio-balloon-device",

                            virtio_balloon_device_create);

    qos_node_consumes("virtio-balloon-device", "virtio-bus", NULL);

    qos_node_produces("virtio-balloon-device", "virtio");

    qos_node_produces("virtio-balloon-device", "virtio-balloon");



    /* virtio-balloon-pci */

    add_qpci_address(&opts, &addr);

    qos_node_create_driver("virtio-balloon-pci", virtio_balloon_pci_create);

    qos_node_consumes("virtio-balloon-pci", "pci-bus", &opts);

    qos_node_produces("virtio-balloon-pci", "pci-device");

    qos_node_produces("virtio-balloon-pci", "virtio");

    qos_node_produces("virtio-balloon-pci", "virtio-balloon");

}



libqos_init(virtio_balloon_register_nodes);

tests/libqos/virtio-balloon.h

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Original line number Diff line number Diff line 
/*

 * libqos driver framework

 *

 * Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License version 2 as published by the Free Software Foundation.

 *

 * 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/>

 */



#include "libqos/qgraph.h"

#include "libqos/virtio.h"

#include "libqos/virtio-pci.h"



typedef struct QVirtioBalloon QVirtioBalloon;

typedef struct QVirtioBalloonPCI QVirtioBalloonPCI;

typedef struct QVirtioBalloonDevice QVirtioBalloonDevice;



struct QVirtioBalloon {

    QVirtioDevice *vdev;

};



struct QVirtioBalloonPCI {

    QVirtioPCIDevice pci_vdev;

    QVirtioBalloon balloon;

};



struct QVirtioBalloonDevice {

    QOSGraphObject obj;

    QVirtioBalloon balloon;

};