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Add vfio-user to x-remote machine. It is a boolean, which indicates if the machine supports vfio-user protocol. The machine configures the bus differently vfio-user and multiprocess protocols, so this property informs it on how to configure the bus. This property should be short lived. Once vfio-user fully replaces multiprocess, this property could be removed. Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 5d51a152a419cbda35d070b8e49b772b60a7230a.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/*
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* Machine for remote device
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*
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* This machine type is used by the remote device process in multi-process
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* QEMU. QEMU device models depend on parent busses, interrupt controllers,
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* memory regions, etc. The remote machine type offers this environment so
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* that QEMU device models can be used as remote devices.
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*
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* Copyright © 2018, 2021 Oracle and/or its affiliates.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "hw/remote/machine.h"
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#include "exec/memory.h"
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#include "qapi/error.h"
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#include "hw/pci/pci_host.h"
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#include "hw/remote/iohub.h"
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#include "hw/qdev-core.h"
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static void remote_machine_init(MachineState *machine)
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{
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MemoryRegion *system_memory, *system_io, *pci_memory;
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RemoteMachineState *s = REMOTE_MACHINE(machine);
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RemotePCIHost *rem_host;
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PCIHostState *pci_host;
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system_memory = get_system_memory();
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system_io = get_system_io();
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pci_memory = g_new(MemoryRegion, 1);
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memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
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rem_host = REMOTE_PCIHOST(qdev_new(TYPE_REMOTE_PCIHOST));
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rem_host->mr_pci_mem = pci_memory;
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rem_host->mr_sys_mem = system_memory;
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rem_host->mr_sys_io = system_io;
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s->host = rem_host;
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object_property_add_child(OBJECT(s), "remote-pcihost", OBJECT(rem_host));
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memory_region_add_subregion_overlap(system_memory, 0x0, pci_memory, -1);
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qdev_realize(DEVICE(rem_host), sysbus_get_default(), &error_fatal);
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pci_host = PCI_HOST_BRIDGE(rem_host);
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remote_iohub_init(&s->iohub);
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pci_bus_irqs(pci_host->bus, remote_iohub_set_irq, remote_iohub_map_irq,
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&s->iohub, REMOTE_IOHUB_NB_PIRQS);
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qbus_set_hotplug_handler(BUS(pci_host->bus), OBJECT(s));
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}
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static bool remote_machine_get_vfio_user(Object *obj, Error **errp)
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{
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RemoteMachineState *s = REMOTE_MACHINE(obj);
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return s->vfio_user;
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}
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static void remote_machine_set_vfio_user(Object *obj, bool value, Error **errp)
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{
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RemoteMachineState *s = REMOTE_MACHINE(obj);
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if (phase_check(PHASE_MACHINE_CREATED)) {
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error_setg(errp, "Error enabling vfio-user - machine already created");
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return;
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}
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s->vfio_user = value;
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}
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static void remote_machine_class_init(ObjectClass *oc, void *data)
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{
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MachineClass *mc = MACHINE_CLASS(oc);
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HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
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mc->init = remote_machine_init;
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mc->desc = "Experimental remote machine";
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hc->unplug = qdev_simple_device_unplug_cb;
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object_class_property_add_bool(oc, "vfio-user",
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remote_machine_get_vfio_user,
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remote_machine_set_vfio_user);
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}
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static const TypeInfo remote_machine = {
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.name = TYPE_REMOTE_MACHINE,
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.parent = TYPE_MACHINE,
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.instance_size = sizeof(RemoteMachineState),
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.class_init = remote_machine_class_init,
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.interfaces = (InterfaceInfo[]) {
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{ TYPE_HOTPLUG_HANDLER },
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{ }
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}
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};
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static void remote_machine_register_types(void)
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{
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type_register_static(&remote_machine);
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}
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type_init(remote_machine_register_types);
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