hw/i386: Make pit a property of common x86 base machine type

Both pc and microvm have pit property individually. Let's just make it
the property of common x86 base machine type.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Sergio Lopez <slp@redhat.com>
Message-Id: <20220310122811.807794-2-xiaoyao.li@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

3 files changed, 29 insertions, 47 deletions

diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index 4b3b1dd262..89b555a2f5 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -257,7 +257,7 @@ static void microvm_devices_init(MicrovmMachineState *mms)
         g_free(i8259);
     }
 
-    if (mms->pit == ON_OFF_AUTO_ON || mms->pit == ON_OFF_AUTO_AUTO) {
+    if (x86ms->pit == ON_OFF_AUTO_ON || x86ms->pit == ON_OFF_AUTO_AUTO) {
         if (kvm_pit_in_kernel()) {
             kvm_pit_init(isa_bus, 0x40);
         } else {
@@ -508,23 +508,6 @@ static void microvm_machine_set_pic(Object *obj, Visitor *v, const char *name,
     visit_type_OnOffAuto(v, name, &mms->pic, errp);
 }
 
-static void microvm_machine_get_pit(Object *obj, Visitor *v, const char *name,
-                                    void *opaque, Error **errp)
-{
-    MicrovmMachineState *mms = MICROVM_MACHINE(obj);
-    OnOffAuto pit = mms->pit;
-
-    visit_type_OnOffAuto(v, name, &pit, errp);
-}
-
-static void microvm_machine_set_pit(Object *obj, Visitor *v, const char *name,
-                                    void *opaque, Error **errp)
-{
-    MicrovmMachineState *mms = MICROVM_MACHINE(obj);
-
-    visit_type_OnOffAuto(v, name, &mms->pit, errp);
-}
-
 static void microvm_machine_get_rtc(Object *obj, Visitor *v, const char *name,
                                     void *opaque, Error **errp)
 {
@@ -650,7 +633,6 @@ static void microvm_machine_initfn(Object *obj)
 
     /* Configuration */
     mms->pic = ON_OFF_AUTO_AUTO;
-    mms->pit = ON_OFF_AUTO_AUTO;
     mms->rtc = ON_OFF_AUTO_AUTO;
     mms->pcie = ON_OFF_AUTO_AUTO;
     mms->ioapic2 = ON_OFF_AUTO_AUTO;
@@ -709,13 +691,6 @@ static void microvm_class_init(ObjectClass *oc, void *data)
     object_class_property_set_description(oc, MICROVM_MACHINE_PIC,
         "Enable i8259 PIC");
 
-    object_class_property_add(oc, MICROVM_MACHINE_PIT, "OnOffAuto",
-                              microvm_machine_get_pit,
-                              microvm_machine_set_pit,
-                              NULL, NULL);
-    object_class_property_set_description(oc, MICROVM_MACHINE_PIT,
-        "Enable i8254 PIT");
-
     object_class_property_add(oc, MICROVM_MACHINE_RTC, "OnOffAuto",
                               microvm_machine_get_rtc,
                               microvm_machine_set_rtc,
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 15f37d8dc6..7c39c91335 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1123,6 +1123,7 @@ void pc_basic_device_init(struct PCMachineState *pcms,
     ISADevice *pit = NULL;
     MemoryRegion *ioport80_io = g_new(MemoryRegion, 1);
     MemoryRegion *ioportF0_io = g_new(MemoryRegion, 1);
+    X86MachineState *x86ms = X86_MACHINE(pcms);
 
     memory_region_init_io(ioport80_io, NULL, &ioport80_io_ops, NULL, "ioport80", 1);
     memory_region_add_subregion(isa_bus->address_space_io, 0x80, ioport80_io);
@@ -1167,7 +1168,8 @@ void pc_basic_device_init(struct PCMachineState *pcms,
 
     qemu_register_boot_set(pc_boot_set, *rtc_state);
 
-    if (!xen_enabled() && pcms->pit_enabled) {
+    if (!xen_enabled() &&
+        (x86ms->pit == ON_OFF_AUTO_AUTO || x86ms->pit == ON_OFF_AUTO_ON)) {
         if (kvm_pit_in_kernel()) {
             pit = kvm_pit_init(isa_bus, 0x40);
         } else {
@@ -1537,20 +1539,6 @@ static void pc_machine_set_sata(Object *obj, bool value, Error **errp)
     pcms->sata_enabled = value;
 }
 
-static bool pc_machine_get_pit(Object *obj, Error **errp)
-{
-    PCMachineState *pcms = PC_MACHINE(obj);
-
-    return pcms->pit_enabled;
-}
-
-static void pc_machine_set_pit(Object *obj, bool value, Error **errp)
-{
-    PCMachineState *pcms = PC_MACHINE(obj);
-
-    pcms->pit_enabled = value;
-}
-
 static bool pc_machine_get_hpet(Object *obj, Error **errp)
 {
     PCMachineState *pcms = PC_MACHINE(obj);
@@ -1707,7 +1695,6 @@ static void pc_machine_initfn(Object *obj)
     pcms->acpi_build_enabled = PC_MACHINE_GET_CLASS(pcms)->has_acpi_build;
     pcms->smbus_enabled = true;
     pcms->sata_enabled = true;
-    pcms->pit_enabled = true;
     pcms->i8042_enabled = true;
     pcms->max_fw_size = 8 * MiB;
 #ifdef CONFIG_HPET
@@ -1836,11 +1823,6 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
     object_class_property_set_description(oc, PC_MACHINE_SATA,
         "Enable/disable Serial ATA bus");
 
-    object_class_property_add_bool(oc, PC_MACHINE_PIT,
-        pc_machine_get_pit, pc_machine_set_pit);
-    object_class_property_set_description(oc, PC_MACHINE_PIT,
-        "Enable/disable Intel 8254 programmable interval timer emulation");
-
     object_class_property_add_bool(oc, "hpet",
         pc_machine_get_hpet, pc_machine_set_hpet);
     object_class_property_set_description(oc, "hpet",
diff --git a/hw/i386/x86.c b/hw/i386/x86.c
index f79e720cc2..784d54efa9 100644
--- a/hw/i386/x86.c
+++ b/hw/i386/x86.c
@@ -1244,6 +1244,23 @@ static void x86_machine_set_acpi(Object *obj, Visitor *v, const char *name,
     visit_type_OnOffAuto(v, name, &x86ms->acpi, errp);
 }
 
+static void x86_machine_get_pit(Object *obj, Visitor *v, const char *name,
+                                    void *opaque, Error **errp)
+{
+    X86MachineState *x86ms = X86_MACHINE(obj);
+    OnOffAuto pit = x86ms->pit;
+
+    visit_type_OnOffAuto(v, name, &pit, errp);
+}
+
+static void x86_machine_set_pit(Object *obj, Visitor *v, const char *name,
+                                    void *opaque, Error **errp)
+{
+    X86MachineState *x86ms = X86_MACHINE(obj);;
+
+    visit_type_OnOffAuto(v, name, &x86ms->pit, errp);
+}
+
 static char *x86_machine_get_oem_id(Object *obj, Error **errp)
 {
     X86MachineState *x86ms = X86_MACHINE(obj);
@@ -1333,6 +1350,7 @@ static void x86_machine_initfn(Object *obj)
 
     x86ms->smm = ON_OFF_AUTO_AUTO;
     x86ms->acpi = ON_OFF_AUTO_AUTO;
+    x86ms->pit = ON_OFF_AUTO_AUTO;
     x86ms->pci_irq_mask = ACPI_BUILD_PCI_IRQS;
     x86ms->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6);
     x86ms->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
@@ -1364,6 +1382,13 @@ static void x86_machine_class_init(ObjectClass *oc, void *data)
     object_class_property_set_description(oc, X86_MACHINE_ACPI,
         "Enable ACPI");
 
+    object_class_property_add(oc, X86_MACHINE_PIT, "OnOffAuto",
+                              x86_machine_get_pit,
+                              x86_machine_set_pit,
+                              NULL, NULL);
+    object_class_property_set_description(oc, X86_MACHINE_PIT,
+        "Enable i8254 PIT");
+
     object_class_property_add_str(oc, X86_MACHINE_OEM_ID,
                                   x86_machine_get_oem_id,
                                   x86_machine_set_oem_id);