@samitouri / QOSamiQemu
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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 "libqos-malloc.h"
23 #include "qgraph.h"
24 #include "virtio-mmio.h"
25 #include "generic-pcihost.h"
26 #include "hw/pci/pci_regs.h"
27
28 #define LOONGARCH_PAGE_SIZE 0x1000
29 #define LOONGARCH_VIRT_RAM_ADDR 0x100000
30 #define LOONGARCH_VIRT_RAM_SIZE 0xFF00000
31
32 #define LOONGARCH_VIRT_PIO_BASE 0x18000000
33 #define LOONGARCH_VIRT_PCIE_PIO_OFFSET 0x4000
34 #define LOONGARCH_VIRT_PCIE_PIO_LIMIT 0x10000
35 #define LOONGARCH_VIRT_PCIE_ECAM_BASE 0x20000000
36 #define LOONGARCH_VIRT_PCIE_MMIO32_BASE 0x40000000
37 #define LOONGARCH_VIRT_PCIE_MMIO32_LIMIT 0x80000000
38
39 typedef struct QVirtMachine QVirtMachine;
40
41 struct QVirtMachine {
42 QOSGraphObject obj;
43 QGuestAllocator alloc;
44 QVirtioMMIODevice virtio_mmio;
45 QGenericPCIHost bridge;
46 };
47
48 static void virt_destructor(QOSGraphObject *obj)
49 {
50 QVirtMachine *machine = (QVirtMachine *) obj;
51 alloc_destroy(&machine->alloc);
52 }
53
54 static void *virt_get_driver(void *object, const char *interface)
55 {
56 QVirtMachine *machine = object;
57 if (!g_strcmp0(interface, "memory")) {
58 return &machine->alloc;
59 }
60
61 fprintf(stderr, "%s not present in loongarch/virtio\n", interface);
62 g_assert_not_reached();
63 }
64
65 static QOSGraphObject *virt_get_device(void *obj, const char *device)
66 {
67 QVirtMachine *machine = obj;
68 if (!g_strcmp0(device, "generic-pcihost")) {
69 return &machine->bridge.obj;
70 } else if (!g_strcmp0(device, "virtio-mmio")) {
71 return &machine->virtio_mmio.obj;
72 }
73
74 fprintf(stderr, "%s not present in loongarch/virt\n", device);
75 g_assert_not_reached();
76 }
77
78 static void loongarch_config_qpci_bus(QGenericPCIBus *qpci)
79 {
80 qpci->gpex_pio_base = LOONGARCH_VIRT_PIO_BASE;
81 qpci->bus.pio_alloc_ptr = LOONGARCH_VIRT_PCIE_PIO_OFFSET;
82 qpci->bus.pio_limit = LOONGARCH_VIRT_PCIE_PIO_LIMIT;
83 qpci->bus.mmio_alloc_ptr = LOONGARCH_VIRT_PCIE_MMIO32_BASE;
84 qpci->bus.mmio_limit = LOONGARCH_VIRT_PCIE_MMIO32_LIMIT;
85 qpci->ecam_alloc_ptr = LOONGARCH_VIRT_PCIE_ECAM_BASE;
86 }
87
88 static void *qos_create_machine_loongarch_virt(QTestState *qts)
89 {
90 QVirtMachine *machine = g_new0(QVirtMachine, 1);
91
92 alloc_init(&machine->alloc, 0,
93 LOONGARCH_VIRT_RAM_ADDR,
94 LOONGARCH_VIRT_RAM_ADDR + LOONGARCH_VIRT_RAM_SIZE,
95 LOONGARCH_PAGE_SIZE);
96
97 qos_create_generic_pcihost(&machine->bridge, qts, &machine->alloc);
98 loongarch_config_qpci_bus(&machine->bridge.pci);
99
100 machine->obj.get_device = virt_get_device;
101 machine->obj.get_driver = virt_get_driver;
102 machine->obj.destructor = virt_destructor;
103 return machine;
104 }
105
106 static void virt_machine_register_nodes(void)
107 {
108 qos_node_create_machine_args("loongarch64/virt",
109 qos_create_machine_loongarch_virt,
110 " -cpu la464");
111 qos_node_contains("loongarch64/virt", "generic-pcihost", NULL);
112 }
113
114 libqos_init(virt_machine_register_nodes);