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173 lines
5.0 KiB
C
173 lines
5.0 KiB
C
/*
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* virtio-gpio nodes for testing
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*
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* Copyright (c) 2022 Linaro Ltd
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "standard-headers/linux/virtio_config.h"
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#include "../libqtest.h"
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#include "qemu/module.h"
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#include "qgraph.h"
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#include "virtio-gpio.h"
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static QGuestAllocator *alloc;
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static void virtio_gpio_cleanup(QVhostUserGPIO *gpio)
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{
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QVirtioDevice *vdev = gpio->vdev;
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int i;
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for (i = 0; i < 2; i++) {
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qvirtqueue_cleanup(vdev->bus, gpio->queues[i], alloc);
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}
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g_free(gpio->queues);
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}
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/*
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* This handles the VirtIO setup from the point of view of the driver
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* frontend and therefor doesn't present any vhost specific features
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* and in fact masks of the re-used bit.
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*/
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static void virtio_gpio_setup(QVhostUserGPIO *gpio)
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{
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QVirtioDevice *vdev = gpio->vdev;
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uint64_t features;
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int i;
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features = qvirtio_get_features(vdev);
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features &= ~QVIRTIO_F_BAD_FEATURE;
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qvirtio_set_features(vdev, features);
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gpio->queues = g_new(QVirtQueue *, 2);
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for (i = 0; i < 2; i++) {
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gpio->queues[i] = qvirtqueue_setup(vdev, alloc, i);
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}
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qvirtio_set_driver_ok(vdev);
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}
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static void *qvirtio_gpio_get_driver(QVhostUserGPIO *v_gpio,
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const char *interface)
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{
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if (!g_strcmp0(interface, "vhost-user-gpio")) {
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return v_gpio;
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}
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if (!g_strcmp0(interface, "virtio")) {
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return v_gpio->vdev;
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}
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g_assert_not_reached();
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}
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static void *qvirtio_gpio_device_get_driver(void *object,
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const char *interface)
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{
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QVhostUserGPIODevice *v_gpio = object;
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return qvirtio_gpio_get_driver(&v_gpio->gpio, interface);
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}
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/* virtio-gpio (mmio) */
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static void qvirtio_gpio_device_destructor(QOSGraphObject *obj)
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{
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QVhostUserGPIODevice *gpio_dev = (QVhostUserGPIODevice *) obj;
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virtio_gpio_cleanup(&gpio_dev->gpio);
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}
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static void qvirtio_gpio_device_start_hw(QOSGraphObject *obj)
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{
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QVhostUserGPIODevice *gpio_dev = (QVhostUserGPIODevice *) obj;
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virtio_gpio_setup(&gpio_dev->gpio);
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}
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static void *virtio_gpio_device_create(void *virtio_dev,
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QGuestAllocator *t_alloc,
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void *addr)
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{
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QVhostUserGPIODevice *virtio_device = g_new0(QVhostUserGPIODevice, 1);
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QVhostUserGPIO *interface = &virtio_device->gpio;
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interface->vdev = virtio_dev;
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alloc = t_alloc;
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virtio_device->obj.get_driver = qvirtio_gpio_device_get_driver;
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virtio_device->obj.start_hw = qvirtio_gpio_device_start_hw;
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virtio_device->obj.destructor = qvirtio_gpio_device_destructor;
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return &virtio_device->obj;
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}
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/* virtio-gpio-pci */
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static void qvirtio_gpio_pci_destructor(QOSGraphObject *obj)
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{
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QVhostUserGPIOPCI *gpio_pci = (QVhostUserGPIOPCI *) obj;
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QOSGraphObject *pci_vobj = &gpio_pci->pci_vdev.obj;
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virtio_gpio_cleanup(&gpio_pci->gpio);
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qvirtio_pci_destructor(pci_vobj);
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}
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static void qvirtio_gpio_pci_start_hw(QOSGraphObject *obj)
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{
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QVhostUserGPIOPCI *gpio_pci = (QVhostUserGPIOPCI *) obj;
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QOSGraphObject *pci_vobj = &gpio_pci->pci_vdev.obj;
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qvirtio_pci_start_hw(pci_vobj);
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virtio_gpio_setup(&gpio_pci->gpio);
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}
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static void *qvirtio_gpio_pci_get_driver(void *object, const char *interface)
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{
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QVhostUserGPIOPCI *v_gpio = object;
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if (!g_strcmp0(interface, "pci-device")) {
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return v_gpio->pci_vdev.pdev;
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}
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return qvirtio_gpio_get_driver(&v_gpio->gpio, interface);
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}
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static void *virtio_gpio_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
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void *addr)
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{
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QVhostUserGPIOPCI *virtio_spci = g_new0(QVhostUserGPIOPCI, 1);
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QVhostUserGPIO *interface = &virtio_spci->gpio;
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QOSGraphObject *obj = &virtio_spci->pci_vdev.obj;
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virtio_pci_init(&virtio_spci->pci_vdev, pci_bus, addr);
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interface->vdev = &virtio_spci->pci_vdev.vdev;
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alloc = t_alloc;
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obj->get_driver = qvirtio_gpio_pci_get_driver;
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obj->start_hw = qvirtio_gpio_pci_start_hw;
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obj->destructor = qvirtio_gpio_pci_destructor;
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return obj;
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}
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static void virtio_gpio_register_nodes(void)
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{
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QPCIAddress addr = {
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.devfn = QPCI_DEVFN(4, 0),
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};
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QOSGraphEdgeOptions edge_opts = { };
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/* vhost-user-gpio-device */
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edge_opts.extra_device_opts = "id=gpio0,chardev=chr-vhost-user-test "
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"-global virtio-mmio.force-legacy=false";
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qos_node_create_driver("vhost-user-gpio-device",
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virtio_gpio_device_create);
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qos_node_consumes("vhost-user-gpio-device", "virtio-bus", &edge_opts);
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qos_node_produces("vhost-user-gpio-device", "vhost-user-gpio");
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/* virtio-gpio-pci */
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edge_opts.extra_device_opts = "id=gpio0,addr=04.0,chardev=chr-vhost-user-test";
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add_qpci_address(&edge_opts, &addr);
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qos_node_create_driver("vhost-user-gpio-pci", virtio_gpio_pci_create);
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qos_node_consumes("vhost-user-gpio-pci", "pci-bus", &edge_opts);
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qos_node_produces("vhost-user-gpio-pci", "vhost-user-gpio");
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}
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libqos_init(virtio_gpio_register_nodes);
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