cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

machine.c (2296B)

      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
     25static 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
     59static 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
     67static 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
     74static void remote_machine_register_types(void)
     75{
     76    type_register_static(&remote_machine);
     77}
     78
     79type_init(remote_machine_register_types);