/* * 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 2.1 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 "qemu/module.h" #include "standard-headers/linux/virtio_ids.h" #include "qgraph.h" #include "virtio-scsi.h" /* virtio-scsi-device */ static void *qvirtio_scsi_get_driver(QVirtioSCSI *v_scsi, const char *interface) { if (!g_strcmp0(interface, "virtio-scsi")) { return v_scsi; } if (!g_strcmp0(interface, "virtio")) { return v_scsi->vdev; } fprintf(stderr, "%s not present in virtio-scsi-device\n", interface); g_assert_not_reached(); } static void *qvirtio_scsi_device_get_driver(void *object, const char *interface) { QVirtioSCSIDevice *v_scsi = object; return qvirtio_scsi_get_driver(&v_scsi->scsi, interface); } static void *virtio_scsi_device_create(void *virtio_dev, QGuestAllocator *t_alloc, void *addr) { QVirtioSCSIDevice *virtio_bdevice = g_new0(QVirtioSCSIDevice, 1); QVirtioSCSI *interface = &virtio_bdevice->scsi; interface->vdev = virtio_dev; virtio_bdevice->obj.get_driver = qvirtio_scsi_device_get_driver; return &virtio_bdevice->obj; } /* virtio-scsi-pci */ static void *qvirtio_scsi_pci_get_driver(void *object, const char *interface) { QVirtioSCSIPCI *v_scsi = object; if (!g_strcmp0(interface, "pci-device")) { return v_scsi->pci_vdev.pdev; } return qvirtio_scsi_get_driver(&v_scsi->scsi, interface); } static void *virtio_scsi_pci_create(void *pci_bus, QGuestAllocator *t_alloc, void *addr) { QVirtioSCSIPCI *virtio_spci = g_new0(QVirtioSCSIPCI, 1); QVirtioSCSI *interface = &virtio_spci->scsi; QOSGraphObject *obj = &virtio_spci->pci_vdev.obj; virtio_pci_init(&virtio_spci->pci_vdev, pci_bus, addr); interface->vdev = &virtio_spci->pci_vdev.vdev; g_assert_cmphex(interface->vdev->device_type, ==, VIRTIO_ID_SCSI); obj->get_driver = qvirtio_scsi_pci_get_driver; return obj; } static void virtio_scsi_register_nodes(void) { QPCIAddress addr = { .devfn = QPCI_DEVFN(4, 0), }; QOSGraphEdgeOptions opts = { .before_cmd_line = "-drive id=drv0,if=none,file=null-co://," "file.read-zeroes=on,format=raw", .after_cmd_line = "-device scsi-hd,bus=vs0.0,drive=drv0", }; /* virtio-scsi-device */ opts.extra_device_opts = "id=vs0"; qos_node_create_driver("virtio-scsi-device", virtio_scsi_device_create); qos_node_consumes("virtio-scsi-device", "virtio-bus", &opts); qos_node_produces("virtio-scsi-device", "virtio-scsi"); /* virtio-scsi-pci */ opts.extra_device_opts = "id=vs0,addr=04.0"; add_qpci_address(&opts, &addr); qos_node_create_driver("virtio-scsi-pci", virtio_scsi_pci_create); qos_node_consumes("virtio-scsi-pci", "pci-bus", &opts); qos_node_produces("virtio-scsi-pci", "pci-device"); qos_node_produces("virtio-scsi-pci", "virtio-scsi"); } libqos_init(virtio_scsi_register_nodes);