[RFC PATCH-for-9.1 29/29] hw/i386/pc: Move ISA-only PC machine to pc_isa.c

[Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>]

Extract the ISA-only PC machine code from pc_piix.c
to a new file, pc_isa.c.

Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
---
 MAINTAINERS         |  1 +
 hw/i386/pc_isa.c    | 33 +++++++++++++++++++++++++++++++++
 hw/i386/pc_piix.c   | 23 -----------------------
 hw/i386/meson.build |  1 +
 4 files changed, 35 insertions(+), 23 deletions(-)
 create mode 100644 hw/i386/pc_isa.c

diff --git a/MAINTAINERS b/MAINTAINERS
index a07af6b9d4..a68fa813b8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1812,6 +1812,7 @@ M: Marcel Apfelbaum <marcel.apfelbaum@xxxxxxxxx>
 S: Supported
 F: include/hw/i386/
 F: hw/i386/
+X: hw/i386/pc_isa.c
 F: hw/pci-host/i440fx.c
 F: hw/pci-host/q35.c
 F: hw/pci-host/pam.c
diff --git a/hw/i386/pc_isa.c b/hw/i386/pc_isa.c
new file mode 100644
index 0000000000..a98c75f3ae
--- /dev/null
+++ b/hw/i386/pc_isa.c
@@ -0,0 +1,33 @@
+/*
+ * QEMU ISA PC System Emulator
+ *
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "qemu/osdep.h"
+#include "qom/object.h"
+#include "hw/boards.h"
+#include "hw/i386/pc.h"
+#include "hw/char/parallel-isa.h"
+#include "target/i386/cpu-qom.h"
+
+static void pc_init_isa(MachineState *machine)
+{
+    pc_piix_init(machine, NULL);
+}
+
+static void isapc_machine_options(MachineClass *m)
+{
+    m->desc = "ISA-only PC";
+    m->max_cpus = 1;
+    m->option_rom_has_mr = true;
+    m->rom_file_has_mr = false;
+    m->default_nic = "ne2k_isa";
+    m->default_cpu_type = X86_CPU_TYPE_NAME("486");
+    m->no_parallel = !module_object_class_by_name(TYPE_ISA_PARALLEL);
+}
+
+DEFINE_PC_MACHINE(isapc, "isapc", pc_init_isa,
+                  isapc_machine_options, TYPE_PC_MACHINE);
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 4a3ae72fe4..f94221ab92 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -434,13 +434,6 @@ static void pc_set_south_bridge(Object *obj, int value, 
Error **errp)
  * hw_compat_*, pc_compat_*, or * pc_*_machine_options().
  */
 
-#ifdef CONFIG_ISAPC
-static void pc_init_isa(MachineState *machine)
-{
-    pc_piix_init(machine, NULL);
-}
-#endif
-
 #ifdef CONFIG_XEN
 static void pc_xen_hvm_init_pci(MachineState *machine)
 {
@@ -820,22 +813,6 @@ static void pc_i440fx_2_4_machine_options(MachineClass *m)
 DEFINE_I440FX_MACHINE(v2_4, "pc-i440fx-2.4", NULL,
                       pc_i440fx_2_4_machine_options)
 
-#ifdef CONFIG_ISAPC
-static void isapc_machine_options(MachineClass *m)
-{
-    m->desc = "ISA-only PC";
-    m->max_cpus = 1;
-    m->option_rom_has_mr = true;
-    m->rom_file_has_mr = false;
-    m->default_nic = "ne2k_isa";
-    m->default_cpu_type = X86_CPU_TYPE_NAME("486");
-    m->no_parallel = !module_object_class_by_name(TYPE_ISA_PARALLEL);
-}
-
-DEFINE_PC_MACHINE(isapc, "isapc", pc_init_isa,
-                  isapc_machine_options, TYPE_PC_MACHINE);
-#endif
-
 #ifdef CONFIG_XEN
 static void xenfv_4_2_machine_options(MachineClass *m)
 {
diff --git a/hw/i386/meson.build b/hw/i386/meson.build
index 1a6e731196..0576fc6541 100644
--- a/hw/i386/meson.build
+++ b/hw/i386/meson.build
@@ -12,6 +12,7 @@ i386_ss.add(when: 'CONFIG_X86_IOMMU', if_true: 
files('x86-iommu.c'),
                                       if_false: files('x86-iommu-stub.c'))
 i386_ss.add(when: 'CONFIG_AMD_IOMMU', if_true: files('amd_iommu.c'),
                                       if_false: files('amd_iommu-stub.c'))
+i386_ss.add(when: 'CONFIG_ISAPC', if_true: files('pc_isa.c'))
 i386_ss.add(when: 'CONFIG_I440FX', if_true: files('pc_piix.c'))
 i386_ss.add(when: 'CONFIG_MICROVM', if_true: files('microvm.c', 
'acpi-microvm.c', 'microvm-dt.c'))
 i386_ss.add(when: 'CONFIG_Q35', if_true: files('pc_q35.c'))
-- 
2.41.0