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" 17 #include "qemu-common.h" 18 19 #include "hw/remote/machine.h" 20 #include "exec/memory.h" 21 #include "qapi/error.h" 22 #include "hw/pci/pci_host.h" 23 #include "hw/remote/iohub.h" 24 25 static void remote_machine_init(MachineState *machine) 26 { 27 MemoryRegion *system_memory, *system_io, *pci_memory; 28 RemoteMachineState *s = REMOTE_MACHINE(machine); 29 RemotePCIHost *rem_host; 30 PCIHostState *pci_host; 31 32 system_memory = get_system_memory(); 33 system_io = get_system_io(); 34 35 pci_memory = g_new(MemoryRegion, 1); 36 memory_region_init(pci_memory, NULL, "pci", UINT64_MAX); 37 38 rem_host = REMOTE_PCIHOST(qdev_new(TYPE_REMOTE_PCIHOST)); 39 40 rem_host->mr_pci_mem = pci_memory; 41 rem_host->mr_sys_mem = system_memory; 42 rem_host->mr_sys_io = system_io; 43 44 s->host = rem_host; 45 46 object_property_add_child(OBJECT(s), "remote-pcihost", OBJECT(rem_host)); 47 memory_region_add_subregion_overlap(system_memory, 0x0, pci_memory, -1); 48 49 qdev_realize(DEVICE(rem_host), sysbus_get_default(), &error_fatal); 50 51 pci_host = PCI_HOST_BRIDGE(rem_host); 52 53 remote_iohub_init(&s->iohub); 54 55 pci_bus_irqs(pci_host->bus, remote_iohub_set_irq, remote_iohub_map_irq, 56 &s->iohub, REMOTE_IOHUB_NB_PIRQS); 57 } 58 59 static void remote_machine_class_init(ObjectClass *oc, void *data) 60 { 61 MachineClass *mc = MACHINE_CLASS(oc); 62 63 mc->init = remote_machine_init; 64 mc->desc = "Experimental remote machine"; 65 } 66 67 static const TypeInfo remote_machine = { 68 .name = TYPE_REMOTE_MACHINE, 69 .parent = TYPE_MACHINE, 70 .instance_size = sizeof(RemoteMachineState), 71 .class_init = remote_machine_class_init, 72 }; 73 74 static void remote_machine_register_types(void) 75 { 76 type_register_static(&remote_machine); 77 } 78 79 type_init(remote_machine_register_types); 80