tests/libqos/virtio-scsi.c

   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 "standard-headers/linux/virtio_ids.h"
  22 #include "libqos/qgraph.h"
  23 #include "libqos/virtio-scsi.h"
  24
  25 /* virtio-scsi-device */
  26 static void *qvirtio_scsi_get_driver(QVirtioSCSI *v_scsi,
  27                                      const char *interface)
  28 {
  29     if (!g_strcmp0(interface, "virtio-scsi")) {
  30         return v_scsi;
  31     }
  32     if (!g_strcmp0(interface, "virtio")) {
  33         return v_scsi->vdev;
  34     }
  35
  36     fprintf(stderr, "%s not present in virtio-scsi-device\n", interface);
  37     g_assert_not_reached();
  38 }
  39
  40 static void *qvirtio_scsi_device_get_driver(void *object,
  41                                             const char *interface)
  42 {
  43     QVirtioSCSIDevice *v_scsi = object;
  44     return qvirtio_scsi_get_driver(&v_scsi->scsi, interface);
  45 }
  46
  47 static void *virtio_scsi_device_create(void *virtio_dev,
  48                                           QGuestAllocator *t_alloc,
  49                                           void *addr)
  50 {
  51     QVirtioSCSIDevice *virtio_bdevice = g_new0(QVirtioSCSIDevice, 1);
  52     QVirtioSCSI *interface = &virtio_bdevice->scsi;
  53
  54     interface->vdev = virtio_dev;
  55
  56     virtio_bdevice->obj.get_driver = qvirtio_scsi_device_get_driver;
  57
  58     return &virtio_bdevice->obj;
  59 }
  60
  61 /* virtio-scsi-pci */
  62 static void *qvirtio_scsi_pci_get_driver(void *object,
  63                                          const char *interface)
  64 {
  65     QVirtioSCSIPCI *v_scsi = object;
  66     if (!g_strcmp0(interface, "pci-device")) {
  67         return v_scsi->pci_vdev.pdev;
  68     }
  69     return qvirtio_scsi_get_driver(&v_scsi->scsi, interface);
  70 }
  71
  72 static void *virtio_scsi_pci_create(void *pci_bus,
  73                                     QGuestAllocator *t_alloc,
  74                                     void *addr)
  75 {
  76     QVirtioSCSIPCI *virtio_spci = g_new0(QVirtioSCSIPCI, 1);
  77     QVirtioSCSI *interface = &virtio_spci->scsi;
  78     QOSGraphObject *obj = &virtio_spci->pci_vdev.obj;
  79
  80     virtio_pci_init(&virtio_spci->pci_vdev, pci_bus, addr);
  81     interface->vdev = &virtio_spci->pci_vdev.vdev;
  82
  83     g_assert_cmphex(interface->vdev->device_type, ==, VIRTIO_ID_SCSI);
  84
  85     obj->get_driver = qvirtio_scsi_pci_get_driver;
  86
  87     return obj;
  88 }
  89
  90 static void virtio_scsi_register_nodes(void)
  91 {
  92     QPCIAddress addr = {
  93         .devfn = QPCI_DEVFN(4, 0),
  94     };
  95
  96     QOSGraphEdgeOptions opts = {
  97         .before_cmd_line = "-drive id=drv0,if=none,file=null-co://,format=raw",
  98         .after_cmd_line = "-device scsi-hd,bus=vs0.0,drive=drv0",
  99     };
 100
 101     /* virtio-scsi-device */
 102     opts.extra_device_opts = "id=vs0";
 103     qos_node_create_driver("virtio-scsi-device",
 104                             virtio_scsi_device_create);
 105     qos_node_consumes("virtio-scsi-device", "virtio-bus", &opts);
 106     qos_node_produces("virtio-scsi-device", "virtio-scsi");
 107
 108     /* virtio-scsi-pci */
 109     opts.extra_device_opts = "id=vs0,addr=04.0";
 110     add_qpci_address(&opts, &addr);
 111     qos_node_create_driver("virtio-scsi-pci", virtio_scsi_pci_create);
 112     qos_node_consumes("virtio-scsi-pci", "pci-bus", &opts);
 113     qos_node_produces("virtio-scsi-pci", "pci-device");
 114     qos_node_produces("virtio-scsi-pci", "virtio-scsi");
 115 }
 116
 117 libqos_init(virtio_scsi_register_nodes);