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 "malloc.h" 23 #include "qgraph.h" 24 #include "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 40 static void virt_destructor(QOSGraphObject *obj) 41 { 42 QVirtMachine *machine = (QVirtMachine *) obj; 43 alloc_destroy(&machine->alloc); 44 } 45 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 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 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 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