[3/4] pc: make pit configurable

Commit Message

Chao Peng Nov. 5, 2016, 7:19 a.m. UTC

Signed-off-by: Chao Peng <[e-mail]>
---
 hw/i386/pc.c         | 21 ++++++++++++++++++++-
 hw/i386/pc_piix.c    |  2 +-
 hw/i386/pc_q35.c     |  3 ++-
 include/hw/i386/pc.h |  3 +++
 4 files changed, 26 insertions(+), 3 deletions(-)

Patch

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index c5c65ce..f58c75c 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1539,6 +1539,7 @@  void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi,
                           ISADevice **rtc_state,
                           bool create_fdctrl,
                           bool no_vmport,
+                          bool has_pit,
                           uint32_t hpet_irqs)
 {
     int i;
@@ -1592,7 +1593,7 @@  void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi,
 
     qemu_register_boot_set(pc_boot_set, *rtc_state);
 
-    if (!xen_enabled()) {
+    if (!xen_enabled() && has_pit) {
         if (kvm_pit_in_kernel()) {
             pit = kvm_pit_init(isa_bus, 0x40);
         } else {
@@ -2209,6 +2210,20 @@  static void pc_machine_set_sata(Object *obj, bool value, Error **errp)
     pcms->sata = value;
 }
 
+static bool pc_machine_get_pit(Object *obj, Error **errp)
+{
+    PCMachineState *pcms = PC_MACHINE(obj);
+
+    return pcms->pit;
+}
+
+static void pc_machine_set_pit(Object *obj, bool value, Error **errp)
+{
+    PCMachineState *pcms = PC_MACHINE(obj);
+
+    pcms->pit = value;
+}
+
 static void pc_machine_initfn(Object *obj)
 {
     PCMachineState *pcms = PC_MACHINE(obj);
@@ -2220,6 +2235,7 @@  static void pc_machine_initfn(Object *obj)
     pcms->acpi_nvdimm_state.is_enabled = false;
     pcms->smbus = true;
     pcms->sata = true;
+    pcms->pit = true;
 }
 
 static void pc_machine_reset(void)
@@ -2387,6 +2403,9 @@  static void pc_machine_class_init(ObjectClass *oc, void *data)
 
     object_class_property_add_bool(oc, PC_MACHINE_SATA,
         pc_machine_get_sata, pc_machine_set_sata, &error_abort);
+
+    object_class_property_add_bool(oc, PC_MACHINE_PIT,
+        pc_machine_get_pit, pc_machine_set_pit, &error_abort);
 }
 
 static const TypeInfo pc_machine_info = {
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index a54a468..5e1adbe 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -235,7 +235,7 @@  static void pc_init1(MachineState *machine,
 
     /* init basic PC hardware */
     pc_basic_device_init(isa_bus, pcms->gsi, &rtc_state, true,
-                         (pcms->vmport != ON_OFF_AUTO_ON), 0x4);
+                         (pcms->vmport != ON_OFF_AUTO_ON), pcms->pit, 0x4);
 
     pc_nic_init(isa_bus, pci_bus);
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 205c33e..d042fe0 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -227,7 +227,8 @@  static void pc_q35_init(MachineState *machine)
 
     /* init basic PC hardware */
     pc_basic_device_init(isa_bus, pcms->gsi, &rtc_state, !mc->no_floppy,
-                         (pcms->vmport != ON_OFF_AUTO_ON), 0xff0104);
+                         (pcms->vmport != ON_OFF_AUTO_ON), pcms->pit,
+                         0xff0104);
 
     /* connect pm stuff to lpc */
     ich9_lpc_pm_init(lpc, pc_machine_is_smm_enabled(pcms));
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index d7dfda6..5fb03c0 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -64,6 +64,7 @@  struct PCMachineState {
 
     bool smbus;
     bool sata;
+    bool pit;
 
     /* RAM information (sizes, addresses, configuration): */
     ram_addr_t below_4g_mem_size, above_4g_mem_size;
@@ -91,6 +92,7 @@  struct PCMachineState {
 #define PC_MACHINE_NVDIMM           "nvdimm"
 #define PC_MACHINE_SMBUS            "smbus"
 #define PC_MACHINE_SATA             "sata"
+#define PC_MACHINE_PIT              "pit"
 
 /**
  * PCMachineClass:
@@ -263,6 +265,7 @@  void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi,
                           ISADevice **rtc_state,
                           bool create_fdctrl,
                           bool no_vmport,
+                          bool has_pit,
                           uint32_t hpet_irqs);
 void pc_init_ne2k_isa(ISABus *bus, NICInfo *nd);
 void pc_cmos_init(PCMachineState *pcms,