@samitouri / QOSamiQemu
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1 /*
2 * libqos driver framework for risc-v
3 *
4 * Initial version based on arm-virt-machine.c
5 *
6 * Copyright (c) 2024 Ventana Micro
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License version 2.1 as published by the Free Software Foundation.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>
19 */
20
21 #include "qemu/osdep.h"
22 #include "../libqtest.h"
23 #include "qemu/module.h"
24 #include "libqos-malloc.h"
25 #include "qgraph.h"
26 #include "virtio-mmio.h"
27 #include "generic-pcihost.h"
28 #include "hw/pci/pci_regs.h"
29
30 #define RISCV_PAGE_SIZE 4096
31
32 /* VIRT_DRAM */
33 #define RISCV_VIRT_RAM_ADDR 0x80000000
34 #define RISCV_VIRT_RAM_SIZE 0x20000000
35
36 /*
37 * VIRT_VIRTIO. BASE_ADDR points to the last
38 * virtio_mmio device.
39 */
40 #define VIRTIO_MMIO_BASE_ADDR 0x10008000
41 #define VIRTIO_MMIO_SIZE 0x00001000
42
43 /* VIRT_PCIE_PIO */
44 #define RISCV_GPEX_PIO_BASE 0x3000000
45 #define RISCV_BUS_PIO_LIMIT 0x10000
46
47 /* VIRT_PCIE_MMIO */
48 #define RISCV_BUS_MMIO_ALLOC_PTR 0x40000000
49 #define RISCV_BUS_MMIO_LIMIT 0x80000000
50
51 /* VIRT_PCIE_ECAM */
52 #define RISCV_ECAM_ALLOC_PTR 0x30000000
53
54 typedef struct QVirtMachine QVirtMachine;
55
56 struct QVirtMachine {
57 QOSGraphObject obj;
58 QGuestAllocator alloc;
59 QVirtioMMIODevice virtio_mmio;
60 QGenericPCIHost bridge;
61 };
62
63 static void virt_destructor(QOSGraphObject *obj)
64 {
65 QVirtMachine *machine = (QVirtMachine *) obj;
66 alloc_destroy(&machine->alloc);
67 }
68
69 static void *virt_get_driver(void *object, const char *interface)
70 {
71 QVirtMachine *machine = object;
72 if (!g_strcmp0(interface, "memory")) {
73 return &machine->alloc;
74 }
75
76 fprintf(stderr, "%s not present in riscv/virtio\n", interface);
77 g_assert_not_reached();
78 }
79
80 static QOSGraphObject *virt_get_device(void *obj, const char *device)
81 {
82 QVirtMachine *machine = obj;
83 if (!g_strcmp0(device, "generic-pcihost")) {
84 return &machine->bridge.obj;
85 } else if (!g_strcmp0(device, "virtio-mmio")) {
86 return &machine->virtio_mmio.obj;
87 }
88
89 fprintf(stderr, "%s not present in riscv/virt\n", device);
90 g_assert_not_reached();
91 }
92
93 static void riscv_config_qpci_bus(QGenericPCIBus *qpci)
94 {
95 qpci->gpex_pio_base = RISCV_GPEX_PIO_BASE;
96 qpci->bus.pio_limit = RISCV_BUS_PIO_LIMIT;
97
98 qpci->bus.mmio_alloc_ptr = RISCV_BUS_MMIO_ALLOC_PTR;
99 qpci->bus.mmio_limit = RISCV_BUS_MMIO_LIMIT;
100
101 qpci->ecam_alloc_ptr = RISCV_ECAM_ALLOC_PTR;
102 }
103
104 static void *qos_create_machine_riscv_virt(QTestState *qts)
105 {
106 QVirtMachine *machine = g_new0(QVirtMachine, 1);
107
108 alloc_init(&machine->alloc, 0,
109 RISCV_VIRT_RAM_ADDR,
110 RISCV_VIRT_RAM_ADDR + RISCV_VIRT_RAM_SIZE,
111 RISCV_PAGE_SIZE);
112 qvirtio_mmio_init_device(&machine->virtio_mmio, qts, VIRTIO_MMIO_BASE_ADDR,
113 VIRTIO_MMIO_SIZE);
114
115 qos_create_generic_pcihost(&machine->bridge, qts, &machine->alloc);
116 riscv_config_qpci_bus(&machine->bridge.pci);
117
118 machine->obj.get_device = virt_get_device;
119 machine->obj.get_driver = virt_get_driver;
120 machine->obj.destructor = virt_destructor;
121 return machine;
122 }
123
124 static void virt_machine_register_nodes(void)
125 {
126 qos_node_create_machine_args("riscv32/virt", qos_create_machine_riscv_virt,
127 "aclint=on,aia=aplic-imsic");
128 qos_node_contains("riscv32/virt", "virtio-mmio", NULL);
129 qos_node_contains("riscv32/virt", "generic-pcihost", NULL);
130
131 qos_node_create_machine_args("riscv64/virt", qos_create_machine_riscv_virt,
132 "aclint=on,aia=aplic-imsic");
133 qos_node_contains("riscv64/virt", "virtio-mmio", NULL);
134 qos_node_contains("riscv64/virt", "generic-pcihost", NULL);
135 }
136
137 libqos_init(virt_machine_register_nodes);