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3f0e7e57 JR |
1 | /* |
2 | * Machine for remote device | |
3 | * | |
4 | * This machine type is used by the remote device process in multi-process | |
5 | * QEMU. QEMU device models depend on parent busses, interrupt controllers, | |
6 | * memory regions, etc. The remote machine type offers this environment so | |
7 | * that QEMU device models can be used as remote devices. | |
8 | * | |
9 | * Copyright © 2018, 2021 Oracle and/or its affiliates. | |
10 | * | |
11 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
12 | * See the COPYING file in the top-level directory. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include "qemu/osdep.h" | |
3f0e7e57 JR |
17 | |
18 | #include "hw/remote/machine.h" | |
3f0e7e57 JR |
19 | #include "exec/memory.h" |
20 | #include "qapi/error.h" | |
bd36adb8 JR |
21 | #include "hw/pci/pci_host.h" |
22 | #include "hw/remote/iohub.h" | |
3f0e7e57 JR |
23 | |
24 | static void remote_machine_init(MachineState *machine) | |
25 | { | |
26 | MemoryRegion *system_memory, *system_io, *pci_memory; | |
27 | RemoteMachineState *s = REMOTE_MACHINE(machine); | |
28 | RemotePCIHost *rem_host; | |
bd36adb8 | 29 | PCIHostState *pci_host; |
3f0e7e57 JR |
30 | |
31 | system_memory = get_system_memory(); | |
32 | system_io = get_system_io(); | |
33 | ||
34 | pci_memory = g_new(MemoryRegion, 1); | |
35 | memory_region_init(pci_memory, NULL, "pci", UINT64_MAX); | |
36 | ||
37 | rem_host = REMOTE_PCIHOST(qdev_new(TYPE_REMOTE_PCIHOST)); | |
38 | ||
39 | rem_host->mr_pci_mem = pci_memory; | |
40 | rem_host->mr_sys_mem = system_memory; | |
41 | rem_host->mr_sys_io = system_io; | |
42 | ||
43 | s->host = rem_host; | |
44 | ||
45 | object_property_add_child(OBJECT(s), "remote-pcihost", OBJECT(rem_host)); | |
46 | memory_region_add_subregion_overlap(system_memory, 0x0, pci_memory, -1); | |
47 | ||
48 | qdev_realize(DEVICE(rem_host), sysbus_get_default(), &error_fatal); | |
bd36adb8 JR |
49 | |
50 | pci_host = PCI_HOST_BRIDGE(rem_host); | |
51 | ||
52 | remote_iohub_init(&s->iohub); | |
53 | ||
54 | pci_bus_irqs(pci_host->bus, remote_iohub_set_irq, remote_iohub_map_irq, | |
55 | &s->iohub, REMOTE_IOHUB_NB_PIRQS); | |
3f0e7e57 JR |
56 | } |
57 | ||
58 | static void remote_machine_class_init(ObjectClass *oc, void *data) | |
59 | { | |
60 | MachineClass *mc = MACHINE_CLASS(oc); | |
61 | ||
62 | mc->init = remote_machine_init; | |
63 | mc->desc = "Experimental remote machine"; | |
64 | } | |
65 | ||
66 | static const TypeInfo remote_machine = { | |
67 | .name = TYPE_REMOTE_MACHINE, | |
68 | .parent = TYPE_MACHINE, | |
69 | .instance_size = sizeof(RemoteMachineState), | |
70 | .class_init = remote_machine_class_init, | |
71 | }; | |
72 | ||
73 | static void remote_machine_register_types(void) | |
74 | { | |
75 | type_register_static(&remote_machine); | |
76 | } | |
77 | ||
78 | type_init(remote_machine_register_types); |