remote-machine object sets up various subsystems of the remote
device process. Instantiate PCI host bridge object and initialize RAM, IO &
PCI memory regions.
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
---
MAINTAINERS | 2 ++
hw/i386/meson.build | 1 +
hw/i386/remote.c | 69 ++++++++++++++++++++++++++++++++++++++++++++
include/hw/i386/remote.h | 28 ++++++++++++++++++
include/hw/pci-host/remote.h | 1 +
5 files changed, 101 insertions(+)
create mode 100644 hw/i386/remote.c
create mode 100644 include/hw/i386/remote.h
diff --git a/MAINTAINERS b/MAINTAINERS
index bb1d701..12945ee 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3102,6 +3102,8 @@ M: John G Johnson <john.g.johnson@oracle.com>
S: Maintained
F: hw/pci-host/remote.c
F: include/hw/pci-host/remote.h
+F: hw/i386/remote.c
+F: include/hw/i386/remote.h
Build and test automation
-------------------------
diff --git a/hw/i386/meson.build b/hw/i386/meson.build
index e5d109f..d9d4f40 100644
--- a/hw/i386/meson.build
+++ b/hw/i386/meson.build
@@ -24,6 +24,7 @@ i386_ss.add(when: 'CONFIG_PC', if_true: files(
'pc_sysfw.c',
'acpi-build.c',
'port92.c'))
+i386_ss.add(when: 'CONFIG_MPQEMU', if_true: files('remote.c'))
subdir('kvm')
subdir('xen')
diff --git a/hw/i386/remote.c b/hw/i386/remote.c
new file mode 100644
index 0000000..a67be33
--- /dev/null
+++ b/hw/i386/remote.c
@@ -0,0 +1,69 @@
+/*
+ * Machine for remote device
+ *
+ * This machine type is used by the remote device process in multi-process
+ * QEMU. QEMU device models depend on parent busses, interrupt controllers,
+ * memory regions, etc. The remote machine type offers this environment so
+ * that QEMU device models can be used as remote devices.
+ *
+ * Copyright © 2018, 2020 Oracle and/or its affiliates.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+
+#include "hw/i386/remote.h"
+#include "exec/address-spaces.h"
+#include "exec/memory.h"
+#include "qapi/error.h"
+
+static void remote_machine_init(MachineState *machine)
+{
+ MemoryRegion *system_memory, *system_io, *pci_memory;
+ RemoteMachineState *s = REMOTE_MACHINE(machine);
+ RemotePCIHost *rem_host;
+
+ system_memory = get_system_memory();
+ system_io = get_system_io();
+
+ pci_memory = g_new(MemoryRegion, 1);
+ memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
+
+ rem_host = REMOTE_HOST_DEVICE(qdev_new(TYPE_REMOTE_HOST_DEVICE));
+
+ rem_host->mr_pci_mem = pci_memory;
+ rem_host->mr_sys_mem = system_memory;
+ rem_host->mr_sys_io = system_io;
+
+ s->host = rem_host;
+
+ object_property_add_child(OBJECT(s), "remote-device", OBJECT(rem_host));
+ memory_region_add_subregion_overlap(system_memory, 0x0, pci_memory, -1);
+
+ qdev_realize(DEVICE(rem_host), sysbus_get_default(), &error_fatal);
+}