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 2.1 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 "qemu/module.h" 22 #include "qgraph.h" 23 #include "virtio-serial.h" 24 25 static void *qvirtio_serial_get_driver(QVirtioSerial *v_serial, 26 const char *interface) 27 { 28 if (!g_strcmp0(interface, "virtio-serial")) { 29 return v_serial; 30 } 31 if (!g_strcmp0(interface, "virtio")) { 32 return v_serial->vdev; 33 } 34 35 fprintf(stderr, "%s not present in virtio-serial-device\n", interface); 36 g_assert_not_reached(); 37 } 38 39 static void *qvirtio_serial_device_get_driver(void *object, 40 const char *interface) 41 { 42 QVirtioSerialDevice *v_serial = object; 43 return qvirtio_serial_get_driver(&v_serial->serial, interface); 44 } 45 46 static void *virtio_serial_device_create(void *virtio_dev, 47 QGuestAllocator *t_alloc, 48 void *addr) 49 { 50 QVirtioSerialDevice *virtio_device = g_new0(QVirtioSerialDevice, 1); 51 QVirtioSerial *interface = &virtio_device->serial; 52 53 interface->vdev = virtio_dev; 54 55 virtio_device->obj.get_driver = qvirtio_serial_device_get_driver; 56 57 return &virtio_device->obj; 58 } 59 60 /* virtio-serial-pci */ 61 static void *qvirtio_serial_pci_get_driver(void *object, const char *interface) 62 { 63 QVirtioSerialPCI *v_serial = object; 64 if (!g_strcmp0(interface, "pci-device")) { 65 return v_serial->pci_vdev.pdev; 66 } 67 return qvirtio_serial_get_driver(&v_serial->serial, interface); 68 } 69 70 static void *virtio_serial_pci_create(void *pci_bus, QGuestAllocator *t_alloc, 71 void *addr) 72 { 73 QVirtioSerialPCI *virtio_spci = g_new0(QVirtioSerialPCI, 1); 74 QVirtioSerial *interface = &virtio_spci->serial; 75 QOSGraphObject *obj = &virtio_spci->pci_vdev.obj; 76 77 virtio_pci_init(&virtio_spci->pci_vdev, pci_bus, addr); 78 interface->vdev = &virtio_spci->pci_vdev.vdev; 79 80 obj->get_driver = qvirtio_serial_pci_get_driver; 81 82 return obj; 83 } 84 85 static void virtio_serial_register_nodes(void) 86 { 87 QPCIAddress addr = { 88 .devfn = QPCI_DEVFN(4, 0), 89 }; 90 91 QOSGraphEdgeOptions edge_opts = { }; 92 93 /* virtio-serial-device */ 94 edge_opts.extra_device_opts = "id=vser0"; 95 qos_node_create_driver("virtio-serial-device", 96 virtio_serial_device_create); 97 qos_node_consumes("virtio-serial-device", "virtio-bus", &edge_opts); 98 qos_node_produces("virtio-serial-device", "virtio"); 99 qos_node_produces("virtio-serial-device", "virtio-serial"); 100 101 /* virtio-serial-pci */ 102 edge_opts.extra_device_opts = "id=vser0,addr=04.0"; 103 add_qpci_address(&edge_opts, &addr); 104 qos_node_create_driver("virtio-serial-pci", virtio_serial_pci_create); 105 qos_node_consumes("virtio-serial-pci", "pci-bus", &edge_opts); 106 qos_node_produces("virtio-serial-pci", "pci-device"); 107 qos_node_produces("virtio-serial-pci", "virtio"); 108 qos_node_produces("virtio-serial-pci", "virtio-serial"); 109 } 110 111 libqos_init(virtio_serial_register_nodes); 112