Commit d3d400d3 authored by Emanuele Giuseppe Esposito's avatar Emanuele Giuseppe Esposito Committed by Paolo Bonzini
Browse files

tests/libqos: virtio-rng driver and interface nodes 



Add qgraph nodes for virtio-rng-pci and virtio-rng-device.
Both nodes produce virtio-rng, but virtio-rng-pci receives
a pci-bus and uses virtio-pci QOSGraphObject and functions,
while virtio-rng-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 6975bf39

tests/Makefile.include

+1 −0
Original line number Diff line number Diff line
@@ -745,6 +745,7 @@ 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-rng.o

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



# Machines

tests/libqos/virtio-rng.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-rng.h"



/* virtio-rng-device */

static void *qvirtio_rng_get_driver(QVirtioRng *v_rng,

                                    const char *interface)

{

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

        return v_rng;

    }

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

        return v_rng->vdev;

    }



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

    g_assert_not_reached();

}



static void *qvirtio_rng_device_get_driver(void *object,

                                           const char *interface)

{

    QVirtioRngDevice *v_rng = object;

    return qvirtio_rng_get_driver(&v_rng->rng, interface);

}



static void *virtio_rng_device_create(void *virtio_dev,

                                      QGuestAllocator *t_alloc,

                                      void *addr)

{

    QVirtioRngDevice *virtio_rdevice = g_new0(QVirtioRngDevice, 1);

    QVirtioRng *interface = &virtio_rdevice->rng;



    interface->vdev = virtio_dev;



    virtio_rdevice->obj.get_driver = qvirtio_rng_device_get_driver;



    return &virtio_rdevice->obj;

}



/* virtio-rng-pci */

static void *qvirtio_rng_pci_get_driver(void *object, const char *interface)

{

    QVirtioRngPCI *v_rng = object;

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

        return v_rng->pci_vdev.pdev;

    }

    return qvirtio_rng_get_driver(&v_rng->rng, interface);

}



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

                                   void *addr)

{

    QVirtioRngPCI *virtio_rpci = g_new0(QVirtioRngPCI, 1);

    QVirtioRng *interface = &virtio_rpci->rng;

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



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

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



    obj->get_driver = qvirtio_rng_pci_get_driver;



    return obj;

}



static void virtio_rng_register_nodes(void)

{

    QPCIAddress addr = {

        .devfn = QPCI_DEVFN(4, 0),

    };



    QOSGraphEdgeOptions opts = {

        .extra_device_opts = "addr=04.0",

    };



    /* virtio-rng-device */

    qos_node_create_driver("virtio-rng-device", virtio_rng_device_create);

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

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

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



    /* virtio-rng-pci */

    add_qpci_address(&opts, &addr);

    qos_node_create_driver("virtio-rng-pci", virtio_rng_pci_create);

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

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

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

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

}



libqos_init(virtio_rng_register_nodes);

tests/libqos/virtio-rng.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 QVirtioRng QVirtioRng;

typedef struct QVirtioRngPCI QVirtioRngPCI;

typedef struct QVirtioRngDevice QVirtioRngDevice;



struct QVirtioRng {

    QVirtioDevice *vdev;

};



struct QVirtioRngPCI {

    QVirtioPCIDevice pci_vdev;

    QVirtioRng rng;

};



struct QVirtioRngDevice {

    QOSGraphObject obj;

    QVirtioRng rng;

};