[PULL,22/34] pc: acpi: introduce AcpiDeviceIfClass.madt_cpu hook

diff --git a/include/hw/acpi/acpi_dev_interface.h b/include/hw/acpi/acpi_dev_interface.h
index a0c4a33..da4ef7f 100644
--- a/include/hw/acpi/acpi_dev_interface.h
+++ b/include/hw/acpi/acpi_dev_interface.h
@@ -3,6 +3,7 @@ 
 
 #include "qom/object.h"
 #include "qapi-types.h"
+#include "hw/boards.h"
 
 /* These values are part of guest ABI, and can not be changed */
 typedef enum {
@@ -37,6 +38,10 @@  void acpi_send_event(DeviceState *dev, AcpiEventStatusBits event);
  * ospm_status: returns status of ACPI device objects, reported
  *              via _OST method if device supports it.
  * send_event: inject a specified event into guest
+ * madt_cpu: fills @entry with Interrupt Controller Structure
+ *           for CPU indexed by @uid in @apic_ids array,
+ *           returned structure types are:
+ *           0 - Local APIC, 9 - Local x2APIC, 0xB - GICC
  *
  * Interface is designed for providing unified interface
  * to generic ACPI functionality that could be used without
@@ -50,5 +55,7 @@  typedef struct AcpiDeviceIfClass {
     /* <public> */
     void (*ospm_status)(AcpiDeviceIf *adev, ACPIOSTInfoList ***list);
     void (*send_event)(AcpiDeviceIf *adev, AcpiEventStatusBits ev);
+    void (*madt_cpu)(AcpiDeviceIf *adev, int uid,
+                     CPUArchIdList *apic_ids, GArray *entry);
 } AcpiDeviceIfClass;
 #endif
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 49566c8..9e23929 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -17,6 +17,7 @@ 
 #include "hw/compat.h"
 #include "hw/mem/pc-dimm.h"
 #include "hw/mem/nvdimm.h"
+#include "hw/acpi/acpi_dev_interface.h"
 
 #define HPET_INTCAP "hpet-intcap"
 
@@ -345,6 +346,10 @@  void pc_system_firmware_init(MemoryRegion *rom_memory,
 /* pvpanic.c */
 uint16_t pvpanic_port(void);
 
+/* acpi-build.c */
+void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
+                       CPUArchIdList *apic_ids, GArray *entry);
+
 /* e820 types */
 #define E820_RAM        1
 #define E820_RESERVED   2
diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
index 6351d2e..6d24cb5 100644
--- a/hw/acpi/piix4.c
+++ b/hw/acpi/piix4.c
@@ -658,6 +658,7 @@  static void piix4_pm_class_init(ObjectClass *klass, void *data)
     hc->unplug = piix4_device_unplug_cb;
     adevc->ospm_status = piix4_ospm_status;
     adevc->send_event = piix4_send_gpe;
+    adevc->madt_cpu = pc_madt_cpu_entry;
 }
 
 static const TypeInfo piix4_pm_info = {
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index b3dc1df..e35a446 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -329,12 +329,38 @@  build_fadt(GArray *table_data, BIOSLinker *linker, AcpiPmInfo *pm,
                  (void *)fadt, "FACP", sizeof(*fadt), 1, oem_id, oem_table_id);
 }
 
+void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
+                       CPUArchIdList *apic_ids, GArray *entry)
+{
+    int apic_id;
+    AcpiMadtProcessorApic *apic = acpi_data_push(entry, sizeof *apic);
+
+    apic_id = apic_ids->cpus[uid].arch_id;
+    apic->type = ACPI_APIC_PROCESSOR;
+    apic->length = sizeof(*apic);
+    apic->processor_id = uid;
+    apic->local_apic_id = apic_id;
+    if (apic_ids->cpus[uid].cpu != NULL) {
+        apic->flags = cpu_to_le32(1);
+    } else {
+        /* ACPI spec says that LAPIC entry for non present
+         * CPU may be omitted from MADT or it must be marked
+         * as disabled. However omitting non present CPU from
+         * MADT breaks hotplug on linux. So possible CPUs
+         * should be put in MADT but kept disabled.
+         */
+        apic->flags = cpu_to_le32(0);
+    }
+}
+
 static void
 build_madt(GArray *table_data, BIOSLinker *linker, PCMachineState *pcms)
 {
     MachineClass *mc = MACHINE_GET_CLASS(pcms);
     CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(pcms));
     int madt_start = table_data->len;
+    AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(pcms->acpi_dev);
+    AcpiDeviceIf *adev = ACPI_DEVICE_IF(pcms->acpi_dev);
 
     AcpiMultipleApicTable *madt;
     AcpiMadtIoApic *io_apic;
@@ -347,24 +373,7 @@  build_madt(GArray *table_data, BIOSLinker *linker, PCMachineState *pcms)
     madt->flags = cpu_to_le32(1);
 
     for (i = 0; i < apic_ids->len; i++) {
-        AcpiMadtProcessorApic *apic = acpi_data_push(table_data, sizeof *apic);
-        int apic_id = apic_ids->cpus[i].arch_id;
-
-        apic->type = ACPI_APIC_PROCESSOR;
-        apic->length = sizeof(*apic);
-        apic->processor_id = i;
-        apic->local_apic_id = apic_id;
-        if (apic_ids->cpus[i].cpu != NULL) {
-            apic->flags = cpu_to_le32(1);
-        } else {
-            /* ACPI spec says that LAPIC entry for non present
-             * CPU may be omitted from MADT or it must be marked
-             * as disabled. However omitting non present CPU from
-             * MADT breaks hotplug on linux. So possible CPUs
-             * should be put in MADT but kept disabled.
-             */
-            apic->flags = cpu_to_le32(0);
-        }
+        adevc->madt_cpu(adev, i, apic_ids, table_data);
     }
     g_free(apic_ids);
 
diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
index 213741b..c1a4f1b 100644
--- a/hw/isa/lpc_ich9.c
+++ b/hw/isa/lpc_ich9.c
@@ -714,6 +714,7 @@  static void ich9_lpc_class_init(ObjectClass *klass, void *data)
     hc->unplug = ich9_pm_device_unplug_cb;
     adevc->ospm_status = ich9_pm_ospm_status;
     adevc->send_event = ich9_send_gpe;
+    adevc->madt_cpu = pc_madt_cpu_entry;
 }
 
 static const TypeInfo ich9_lpc_info = {
diff --git a/stubs/pc_madt_cpu_entry.c b/stubs/pc_madt_cpu_entry.c
new file mode 100644
index 0000000..427e772
--- /dev/null
+++ b/stubs/pc_madt_cpu_entry.c
@@ -0,0 +1,7 @@ 
+#include "qemu/osdep.h"
+#include "hw/i386/pc.h"
+
+void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
+                       CPUArchIdList *apic_ids, GArray *entry)
+{
+}
diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
index b829ee6..7cdcad4 100644
--- a/stubs/Makefile.objs
+++ b/stubs/Makefile.objs
@@ -43,3 +43,4 @@  stub-obj-y += vhost.o
 stub-obj-y += iohandler.o
 stub-obj-y += smbios_type_38.o
 stub-obj-y += ipmi.o
+stub-obj-y += pc_madt_cpu_entry.o