1 /* 2 * libqos driver framework 3 * 4 * Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com> 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License version 2 as published by the Free Software Foundation. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public 16 * License along with this library; if not, see <http://www.gnu.org/licenses/> 17 */ 18 19 #include "qemu/osdep.h" 20 #include "libqtest.h" 21 #include "libqos/qgraph.h" 22 #include "libqos/virtio-serial.h" 23 24 static void *qvirtio_serial_get_driver(QVirtioSerial *v_serial, 25 const char *interface) 26 { 27 if (!g_strcmp0(interface, "virtio-serial")) { 28 return v_serial; 29 } 30 if (!g_strcmp0(interface, "virtio")) { 31 return v_serial->vdev; 32 } 33 34 fprintf(stderr, "%s not present in virtio-serial-device\n", interface); 35 g_assert_not_reached(); 36 } 37 38 static void *qvirtio_serial_device_get_driver(void *object, 39 const char *interface) 40 { 41 QVirtioSerialDevice *v_serial = object; 42 return qvirtio_serial_get_driver(&v_serial->serial, interface); 43 } 44 45 static void *virtio_serial_device_create(void *virtio_dev, 46 QGuestAllocator *t_alloc, 47 void *addr) 48 { 49 QVirtioSerialDevice *virtio_device = g_new0(QVirtioSerialDevice, 1); 50 QVirtioSerial *interface = &virtio_device->serial; 51 52 interface->vdev = virtio_dev; 53 54 virtio_device->obj.get_driver = qvirtio_serial_device_get_driver; 55 56 return &virtio_device->obj; 57 } 58 59 /* virtio-serial-pci */ 60 static void *qvirtio_serial_pci_get_driver(void *object, const char *interface) 61 { 62 QVirtioSerialPCI *v_serial = object; 63 if (!g_strcmp0(interface, "pci-device")) { 64 return v_serial->pci_vdev.pdev; 65 } 66 return qvirtio_serial_get_driver(&v_serial->serial, interface); 67 } 68 69 static void *virtio_serial_pci_create(void *pci_bus, QGuestAllocator *t_alloc, 70 void *addr) 71 { 72 QVirtioSerialPCI *virtio_spci = g_new0(QVirtioSerialPCI, 1); 73 QVirtioSerial *interface = &virtio_spci->serial; 74 QOSGraphObject *obj = &virtio_spci->pci_vdev.obj; 75 76 virtio_pci_init(&virtio_spci->pci_vdev, pci_bus, addr); 77 interface->vdev = &virtio_spci->pci_vdev.vdev; 78 79 obj->get_driver = qvirtio_serial_pci_get_driver; 80 81 return obj; 82 } 83 84 static void virtio_serial_register_nodes(void) 85 { 86 QPCIAddress addr = { 87 .devfn = QPCI_DEVFN(4, 0), 88 }; 89 90 QOSGraphEdgeOptions edge_opts = { }; 91 92 /* virtio-serial-device */ 93 edge_opts.extra_device_opts = "id=vser0"; 94 qos_node_create_driver("virtio-serial-device", 95 virtio_serial_device_create); 96 qos_node_consumes("virtio-serial-device", "virtio-bus", &edge_opts); 97 qos_node_produces("virtio-serial-device", "virtio"); 98 qos_node_produces("virtio-serial-device", "virtio-serial"); 99 100 /* virtio-serial-pci */ 101 edge_opts.extra_device_opts = "id=vser0,addr=04.0"; 102 add_qpci_address(&edge_opts, &addr); 103 qos_node_create_driver("virtio-serial-pci", virtio_serial_pci_create); 104 qos_node_consumes("virtio-serial-pci", "pci-bus", &edge_opts); 105 qos_node_produces("virtio-serial-pci", "pci-device"); 106 qos_node_produces("virtio-serial-pci", "virtio"); 107 qos_node_produces("virtio-serial-pci", "virtio-serial"); 108 } 109 110 libqos_init(virtio_serial_register_nodes); 111