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a3713493 EGE |
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" | |
0b8fa32f | 21 | #include "qemu/module.h" |
a3713493 EGE |
22 | #include "standard-headers/linux/virtio_blk.h" |
23 | #include "libqos/qgraph.h" | |
24 | #include "libqos/virtio-blk.h" | |
25 | ||
26 | #define PCI_SLOT 0x04 | |
27 | #define PCI_FN 0x00 | |
28 | ||
29 | /* virtio-blk-device */ | |
30 | static void *qvirtio_blk_get_driver(QVirtioBlk *v_blk, | |
31 | const char *interface) | |
32 | { | |
33 | if (!g_strcmp0(interface, "virtio-blk")) { | |
34 | return v_blk; | |
35 | } | |
36 | if (!g_strcmp0(interface, "virtio")) { | |
37 | return v_blk->vdev; | |
38 | } | |
39 | ||
40 | fprintf(stderr, "%s not present in virtio-blk-device\n", interface); | |
41 | g_assert_not_reached(); | |
42 | } | |
43 | ||
44 | static void *qvirtio_blk_device_get_driver(void *object, | |
45 | const char *interface) | |
46 | { | |
47 | QVirtioBlkDevice *v_blk = object; | |
48 | return qvirtio_blk_get_driver(&v_blk->blk, interface); | |
49 | } | |
50 | ||
51 | static void *virtio_blk_device_create(void *virtio_dev, | |
52 | QGuestAllocator *t_alloc, | |
53 | void *addr) | |
54 | { | |
55 | QVirtioBlkDevice *virtio_blk = g_new0(QVirtioBlkDevice, 1); | |
56 | QVirtioBlk *interface = &virtio_blk->blk; | |
57 | ||
58 | interface->vdev = virtio_dev; | |
59 | ||
60 | virtio_blk->obj.get_driver = qvirtio_blk_device_get_driver; | |
61 | ||
62 | return &virtio_blk->obj; | |
63 | } | |
64 | ||
65 | /* virtio-blk-pci */ | |
66 | static void *qvirtio_blk_pci_get_driver(void *object, const char *interface) | |
67 | { | |
68 | QVirtioBlkPCI *v_blk = object; | |
69 | if (!g_strcmp0(interface, "pci-device")) { | |
70 | return v_blk->pci_vdev.pdev; | |
71 | } | |
72 | return qvirtio_blk_get_driver(&v_blk->blk, interface); | |
73 | } | |
74 | ||
75 | static void *virtio_blk_pci_create(void *pci_bus, QGuestAllocator *t_alloc, | |
76 | void *addr) | |
77 | { | |
78 | QVirtioBlkPCI *virtio_blk = g_new0(QVirtioBlkPCI, 1); | |
79 | QVirtioBlk *interface = &virtio_blk->blk; | |
80 | QOSGraphObject *obj = &virtio_blk->pci_vdev.obj; | |
81 | ||
82 | virtio_pci_init(&virtio_blk->pci_vdev, pci_bus, addr); | |
83 | interface->vdev = &virtio_blk->pci_vdev.vdev; | |
84 | ||
85 | g_assert_cmphex(interface->vdev->device_type, ==, VIRTIO_ID_BLOCK); | |
86 | ||
87 | obj->get_driver = qvirtio_blk_pci_get_driver; | |
88 | ||
89 | return obj; | |
90 | } | |
91 | ||
92 | static void virtio_blk_register_nodes(void) | |
93 | { | |
94 | /* FIXME: every test using these two nodes needs to setup a | |
95 | * -drive,id=drive0 otherwise QEMU is not going to start. | |
96 | * Therefore, we do not include "produces" edge for virtio | |
97 | * and pci-device yet. | |
98 | */ | |
99 | ||
100 | char *arg = g_strdup_printf("id=drv0,drive=drive0,addr=%x.%x", | |
101 | PCI_SLOT, PCI_FN); | |
102 | ||
103 | QPCIAddress addr = { | |
104 | .devfn = QPCI_DEVFN(PCI_SLOT, PCI_FN), | |
105 | }; | |
106 | ||
107 | QOSGraphEdgeOptions opts = { }; | |
108 | ||
109 | /* virtio-blk-device */ | |
110 | opts.extra_device_opts = "drive=drive0"; | |
111 | qos_node_create_driver("virtio-blk-device", virtio_blk_device_create); | |
112 | qos_node_consumes("virtio-blk-device", "virtio-bus", &opts); | |
113 | qos_node_produces("virtio-blk-device", "virtio-blk"); | |
114 | ||
115 | /* virtio-blk-pci */ | |
116 | opts.extra_device_opts = arg; | |
117 | add_qpci_address(&opts, &addr); | |
118 | qos_node_create_driver("virtio-blk-pci", virtio_blk_pci_create); | |
119 | qos_node_consumes("virtio-blk-pci", "pci-bus", &opts); | |
120 | qos_node_produces("virtio-blk-pci", "virtio-blk"); | |
121 | ||
122 | g_free(arg); | |
123 | } | |
124 | ||
125 | libqos_init(virtio_blk_register_nodes); |