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 "qemu/module.h"
22 #include "libqos/malloc.h"
23 #include "libqos/qgraph.h"
24 #include "libqos/virtio-mmio.h"
25
26 #define ARM_PAGE_SIZE 4096
27 #define VIRTIO_MMIO_BASE_ADDR 0x0A003E00
28 #define ARM_VIRT_RAM_ADDR 0x40000000
29 #define ARM_VIRT_RAM_SIZE 0x20000000
30 #define VIRTIO_MMIO_SIZE 0x00000200
31
32 typedef struct QVirtMachine QVirtMachine;
33
34 struct QVirtMachine {
35 QOSGraphObject obj;
36 QGuestAllocator alloc;
37 QVirtioMMIODevice virtio_mmio;
38 };
39
virt_destructor(QOSGraphObject * obj)40 static void virt_destructor(QOSGraphObject *obj)
41 {
42 QVirtMachine *machine = (QVirtMachine *) obj;
43 alloc_destroy(&machine->alloc);
44 }
45
virt_get_driver(void * object,const char * interface)46 static void *virt_get_driver(void *object, const char *interface)
47 {
48 QVirtMachine *machine = object;
49 if (!g_strcmp0(interface, "memory")) {
50 return &machine->alloc;
51 }
52
53 fprintf(stderr, "%s not present in arm/virtio\n", interface);
54 g_assert_not_reached();
55 }
56
virt_get_device(void * obj,const char * device)57 static QOSGraphObject *virt_get_device(void *obj, const char *device)
58 {
59 QVirtMachine *machine = obj;
60 if (!g_strcmp0(device, "virtio-mmio")) {
61 return &machine->virtio_mmio.obj;
62 }
63
64 fprintf(stderr, "%s not present in arm/virtio\n", device);
65 g_assert_not_reached();
66 }
67
qos_create_machine_arm_virt(QTestState * qts)68 static void *qos_create_machine_arm_virt(QTestState *qts)
69 {
70 QVirtMachine *machine = g_new0(QVirtMachine, 1);
71
72 alloc_init(&machine->alloc, 0,
73 ARM_VIRT_RAM_ADDR,
74 ARM_VIRT_RAM_ADDR + ARM_VIRT_RAM_SIZE,
75 ARM_PAGE_SIZE);
76 qvirtio_mmio_init_device(&machine->virtio_mmio, qts, VIRTIO_MMIO_BASE_ADDR,
77 VIRTIO_MMIO_SIZE);
78
79 machine->obj.get_device = virt_get_device;
80 machine->obj.get_driver = virt_get_driver;
81 machine->obj.destructor = virt_destructor;
82 return machine;
83 }
84
virtio_mmio_register_nodes(void)85 static void virtio_mmio_register_nodes(void)
86 {
87 qos_node_create_machine("arm/virt", qos_create_machine_arm_virt);
88 qos_node_contains("arm/virt", "virtio-mmio", NULL);
89 }
90
91 libqos_init(virtio_mmio_register_nodes);
92