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