Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc, pci, tpm, virtio, vhost enhancements and fixes

A bunch of cleanups and fixes all over the place,
enhancements in TPM, virtio and vhost.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Mon Jun  1 13:19:48 2015 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"

* remotes/mst/tags/for_upstream: (60 commits)
  vhost-user: add multi queue support
  virtio: make features 64bit wide
  qdev: add 64bit properties
  virtio-mmio: ioeventfd support
  hw/acpi/aml-build: Fix memory leak
  acpi: add aml_while() term
  acpi: add aml_increment() term
  acpi: add aml_shiftright() term
  acpi: add aml_shiftleft() term
  acpi: add aml_index() term
  acpi: add aml_lless() term
  acpi: add aml_add() term
  TPM2 ACPI table support
  tpm: Probe for connected TPM 1.2 or TPM 2
  Extend TPM TIS interface to support TPM 2
  Add stream ID to MSI write
  acpi: Simplify printing to dynamic string
  i386: drop FDC in pc-q35-2.4+ if neither it nor floppy drives are wanted
  i386/pc_q35: don't insist on board FDC if there's no default floppy
  i386/pc: '-drive if=floppy' should imply a board-default FDC
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

14 files changed, 178 insertions, 59 deletions

diff --git a/include/exec/memattrs.h b/include/exec/memattrs.h
index 1389b4b01d..96dc440423 100644
--- a/include/exec/memattrs.h
+++ b/include/exec/memattrs.h
@@ -33,6 +33,8 @@ typedef struct MemTxAttrs {
     unsigned int secure:1;
     /* Memory access is usermode (unprivileged) */
     unsigned int user:1;
+    /* Stream ID (for MSI for example) */
+    unsigned int stream_id:16;
 } MemTxAttrs;
 
 /* Bus masters which don't specify any attributes will get this,
diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index f503ec4a97..59cf277434 100644
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -450,6 +450,9 @@ typedef struct AcpiTableMcfg AcpiTableMcfg;
 
 /*
  * TCPA Description Table
+ *
+ * Following Level 00, Rev 00.37 of specs:
+ * http://www.trustedcomputinggroup.org/resources/tcg_acpi_specification
  */
 struct Acpi20Tcpa {
     ACPI_TABLE_HEADER_DEF                    /* ACPI common table header */
@@ -459,6 +462,21 @@ struct Acpi20Tcpa {
 } QEMU_PACKED;
 typedef struct Acpi20Tcpa Acpi20Tcpa;
 
+/*
+ * TPM2
+ *
+ * Following Level 00, Rev 00.37 of specs:
+ * http://www.trustedcomputinggroup.org/resources/tcg_acpi_specification
+ */
+struct Acpi20TPM2 {
+    ACPI_TABLE_HEADER_DEF
+    uint16_t platform_class;
+    uint16_t reserved;
+    uint64_t control_area_address;
+    uint32_t start_method;
+} QEMU_PACKED;
+typedef struct Acpi20TPM2 Acpi20TPM2;
+
 /* DMAR - DMA Remapping table r2.2 */
 struct AcpiTableDmar {
     ACPI_TABLE_HEADER_DEF
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 9773bfd06b..e3afa13678 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -202,6 +202,12 @@ Aml *aml_arg(int pos);
 Aml *aml_store(Aml *val, Aml *target);
 Aml *aml_and(Aml *arg1, Aml *arg2);
 Aml *aml_or(Aml *arg1, Aml *arg2);
+Aml *aml_shiftleft(Aml *arg1, Aml *count);
+Aml *aml_shiftright(Aml *arg1, Aml *count);
+Aml *aml_lless(Aml *arg1, Aml *arg2);
+Aml *aml_add(Aml *arg1, Aml *arg2);
+Aml *aml_increment(Aml *arg);
+Aml *aml_index(Aml *arg1, Aml *idx);
 Aml *aml_notify(Aml *arg1, Aml *arg2);
 Aml *aml_call1(const char *method, Aml *arg1);
 Aml *aml_call2(const char *method, Aml *arg1, Aml *arg2);
@@ -260,6 +266,7 @@ Aml *aml_device(const char *name_format, ...) GCC_FMT_ATTR(1, 2);
 Aml *aml_method(const char *name, int arg_count);
 Aml *aml_if(Aml *predicate);
 Aml *aml_else(void);
+Aml *aml_while(Aml *predicate);
 Aml *aml_package(uint8_t num_elements);
 Aml *aml_buffer(int buffer_size, uint8_t *byte_list);
 Aml *aml_resource_template(void);
diff --git a/include/hw/acpi/tpm.h b/include/hw/acpi/tpm.h
index 792fcbf5b1..6d516c6a7f 100644
--- a/include/hw/acpi/tpm.h
+++ b/include/hw/acpi/tpm.h
@@ -26,4 +26,9 @@
 #define TPM_TCPA_ACPI_CLASS_CLIENT  0
 #define TPM_TCPA_ACPI_CLASS_SERVER  1
 
+#define TPM2_ACPI_CLASS_CLIENT      0
+#define TPM2_ACPI_CLASS_SERVER      1
+
+#define TPM2_START_METHOD_MMIO      6
+
 #endif /* HW_ACPI_TPM_H */
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 1f118811a2..ff79797ce4 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -19,31 +19,18 @@ typedef void QEMUMachineHotAddCPUFunc(const int64_t id, Error **errp);
 typedef int QEMUMachineGetKvmtypeFunc(const char *arg);
 
 struct QEMUMachine {
-    const char *family; /* NULL iff @name identifies a standalone machtype */
     const char *name;
-    const char *alias;
     const char *desc;
     QEMUMachineInitFunc *init;
-    QEMUMachineResetFunc *reset;
-    QEMUMachineHotAddCPUFunc *hot_add_cpu;
     QEMUMachineGetKvmtypeFunc *kvm_type;
     BlockInterfaceType block_default_type;
-    int units_per_default_bus;
     int max_cpus;
-    unsigned int no_serial:1,
-        no_parallel:1,
-        use_virtcon:1,
-        use_sclp:1,
-        no_floppy:1,
-        no_cdrom:1,
+    unsigned int
         no_sdcard:1,
         has_dynamic_sysbus:1;
     int is_default;
     const char *default_machine_opts;
     const char *default_boot_order;
-    const char *default_display;
-    GlobalProperty *compat_props;
-    const char *hw_version;
 };
 
 void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
diff --git a/include/hw/compat.h b/include/hw/compat.h
index 313682a708..4a43466f03 100644
--- a/include/hw/compat.h
+++ b/include/hw/compat.h
@@ -1,6 +1,12 @@
 #ifndef HW_COMPAT_H
 #define HW_COMPAT_H
 
+#define HW_COMPAT_2_3 \
+        /* empty */
+
+#define HW_COMPAT_2_2 \
+        /* empty */
+
 #define HW_COMPAT_2_1 \
         {\
             .driver   = "intel-hda",\
@@ -30,6 +36,6 @@
             .driver   = "virtio-pci",\
             .property = "virtio-pci-bus-master-bug-migration",\
             .value    = "on",\
-        }
+        },
 
 #endif /* HW_COMPAT_H */
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 1b35168e96..27bd748eab 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -73,8 +73,6 @@ typedef struct PCMachineClass PCMachineClass;
 #define PC_MACHINE_CLASS(klass) \
     OBJECT_CLASS_CHECK(PCMachineClass, (klass), TYPE_PC_MACHINE)
 
-void qemu_register_pc_machine(QEMUMachine *m);
-
 /* PC-style peripherals (also used by other machines).  */
 
 typedef struct PcPciInfo {
@@ -199,6 +197,7 @@ qemu_irq *pc_allocate_cpu_irq(void);
 DeviceState *pc_vga_init(ISABus *isa_bus, PCIBus *pci_bus);
 void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi,
                           ISADevice **rtc_state,
+                          bool create_fdctrl,
                           ISADevice **floppy,
                           bool no_vmport,
                           uint32 hpet_irqs);
@@ -295,8 +294,19 @@ int e820_add_entry(uint64_t, uint64_t, uint32_t);
 int e820_get_num_entries(void);
 bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
 
+#define PC_COMPAT_2_3 \
+        HW_COMPAT_2_3
+
+#define PC_COMPAT_2_2 \
+        PC_COMPAT_2_3 \
+        HW_COMPAT_2_2
+
+#define PC_COMPAT_2_1 \
+        PC_COMPAT_2_2 \
+        HW_COMPAT_2_1
+
 #define PC_COMPAT_2_0 \
-        HW_COMPAT_2_1, \
+        PC_COMPAT_2_1 \
         {\
             .driver   = "virtio-scsi-pci",\
             .property = "any_layout",\
@@ -353,10 +363,10 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
             .driver   = "ioh3420",\
             .property = COMPAT_PROP_PCP,\
             .value    = "off",\
-        }
+        },
 
 #define PC_COMPAT_1_7 \
-        PC_COMPAT_2_0, \
+        PC_COMPAT_2_0 \
         {\
             .driver   = TYPE_USB_DEVICE,\
             .property = "msos-desc",\
@@ -371,10 +381,10 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
             .driver   = "hpet",\
             .property = HPET_INTCAP,\
             .value    = stringify(4),\
-        }
+        },
 
 #define PC_COMPAT_1_6 \
-        PC_COMPAT_1_7, \
+        PC_COMPAT_1_7 \
         {\
             .driver   = "e1000",\
             .property = "mitigation",\
@@ -395,10 +405,10 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
             .driver   = "q35-pcihost",\
             .property = "short_root_bus",\
             .value    = stringify(1),\
-        }
+        },
 
 #define PC_COMPAT_1_5 \
-        PC_COMPAT_1_6, \
+        PC_COMPAT_1_6 \
         {\
             .driver   = "Conroe-" TYPE_X86_CPU,\
             .property = "model",\
@@ -439,31 +449,31 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
             .driver   = "q35-pcihost",\
             .property = "short_root_bus",\
             .value    = stringify(0),\
-        }
+        },
 
 #define PC_COMPAT_1_4 \
-        PC_COMPAT_1_5, \
+        PC_COMPAT_1_5 \
         {\
             .driver   = "scsi-hd",\
             .property = "discard_granularity",\
             .value    = stringify(0),\
-	},{\
+        },{\
             .driver   = "scsi-cd",\
             .property = "discard_granularity",\
             .value    = stringify(0),\
-	},{\
+        },{\
             .driver   = "scsi-disk",\
             .property = "discard_granularity",\
             .value    = stringify(0),\
-	},{\
+        },{\
             .driver   = "ide-hd",\
             .property = "discard_granularity",\
             .value    = stringify(0),\
-	},{\
+        },{\
             .driver   = "ide-cd",\
             .property = "discard_granularity",\
             .value    = stringify(0),\
-	},{\
+        },{\
             .driver   = "ide-drive",\
             .property = "discard_granularity",\
             .value    = stringify(0),\
@@ -471,7 +481,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
             .driver   = "virtio-blk-pci",\
             .property = "discard_granularity",\
             .value    = stringify(0),\
-	},{\
+        },{\
             .driver   = "virtio-serial-pci",\
             .property = "vectors",\
             /* DEV_NVECTORS_UNSPECIFIED as a uint32_t string */\
@@ -504,14 +514,45 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
             .driver   = "486-" TYPE_X86_CPU,\
             .property = "model",\
             .value    = stringify(0),\
-        }
+        },
 
-#define PC_COMMON_MACHINE_OPTIONS \
-    .default_boot_order = "cad"
+static inline void pc_common_machine_options(MachineClass *m)
+{
+    m->default_boot_order = "cad";
+}
+
+static inline void pc_default_machine_options(MachineClass *m)
+{
+    pc_common_machine_options(m);
+    m->hot_add_cpu = pc_hot_add_cpu;
+    m->max_cpus = 255;
+}
 
-#define PC_DEFAULT_MACHINE_OPTIONS \
-    PC_COMMON_MACHINE_OPTIONS, \
-    .hot_add_cpu = pc_hot_add_cpu, \
-    .max_cpus = 255
+#define DEFINE_PC_MACHINE(suffix, namestr, initfn, optsfn) \
+    static void pc_machine_##suffix##_class_init(ObjectClass *oc, void *data) \
+    { \
+        MachineClass *mc = MACHINE_CLASS(oc); \
+        optsfn(mc); \
+        mc->name = namestr; \
+        mc->init = initfn; \
+    } \
+    static const TypeInfo pc_machine_type_##suffix = { \
+        .name       = namestr TYPE_MACHINE_SUFFIX, \
+        .parent     = TYPE_PC_MACHINE, \
+        .class_init = pc_machine_##suffix##_class_init, \
+    }; \
+    static void pc_machine_init_##suffix(void) \
+    { \
+        type_register(&pc_machine_type_##suffix); \
+    } \
+    machine_init(pc_machine_init_##suffix)
+
+#define SET_MACHINE_COMPAT(m, COMPAT) do { \
+    static GlobalProperty props[] = { \
+        COMPAT \
+        { /* end of list */ } \
+    }; \
+    (m)->compat_props = props; \
+} while (0)
 
 #endif
diff --git a/include/hw/pci/msi.h b/include/hw/pci/msi.h
index 81a3848a31..50e452bd05 100644
--- a/include/hw/pci/msi.h
+++ b/include/hw/pci/msi.h
@@ -39,6 +39,7 @@ int msi_init(struct PCIDevice *dev, uint8_t offset,
 void msi_uninit(struct PCIDevice *dev);
 void msi_reset(PCIDevice *dev);
 void msi_notify(PCIDevice *dev, unsigned int vector);
+void msi_send_message(PCIDevice *dev, MSIMessage msg);
 void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len);
 unsigned int msi_nr_vectors_allocated(const PCIDevice *dev);
 
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
index d67dad5f77..0cfff1c77c 100644
--- a/include/hw/qdev-properties.h
+++ b/include/hw/qdev-properties.h
@@ -6,6 +6,7 @@
 /*** qdev-properties.c ***/
 
 extern PropertyInfo qdev_prop_bit;
+extern PropertyInfo qdev_prop_bit64;
 extern PropertyInfo qdev_prop_bool;
 extern PropertyInfo qdev_prop_uint8;
 extern PropertyInfo qdev_prop_uint16;
@@ -50,6 +51,15 @@ extern PropertyInfo qdev_prop_arraylen;
         .qtype     = QTYPE_QBOOL,                                \
         .defval    = (bool)_defval,                              \
         }
+#define DEFINE_PROP_BIT64(_name, _state, _field, _bit, _defval) {       \
+        .name      = (_name),                                           \
+        .info      = &(qdev_prop_bit),                                  \
+        .bitnr    = (_bit),                                             \
+        .offset    = offsetof(_state, _field)                           \
+            + type_check(uint64_t, typeof_field(_state, _field)),       \
+        .qtype     = QTYPE_QBOOL,                                       \
+        .defval    = (bool)_defval,                                     \
+        }
 
 #define DEFINE_PROP_BOOL(_name, _state, _field, _defval) {       \
         .name      = (_name),                                    \
diff --git a/include/hw/s390x/s390_flic.h b/include/hw/s390x/s390_flic.h
index 489d73b9b3..200e7e93fa 100644
--- a/include/hw/s390x/s390_flic.h
+++ b/include/hw/s390x/s390_flic.h
@@ -17,10 +17,13 @@
 #include "hw/s390x/adapter.h"
 #include "hw/virtio/virtio.h"
 
+#define ADAPTER_ROUTES_MAX_GSI 64
+#define VIRTIO_CCW_QUEUE_MAX ADAPTER_ROUTES_MAX_GSI
+
 typedef struct AdapterRoutes {
     AdapterInfo adapter;
     int num_routes;
-    int gsi[VIRTIO_PCI_QUEUE_MAX];
+    int gsi[ADAPTER_ROUTES_MAX_GSI];
 } AdapterRoutes;
 
 #define TYPE_S390_FLIC_COMMON "s390-flic"
diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h
index a4588ca4d9..8811415fa6 100644
--- a/include/hw/virtio/virtio-bus.h
+++ b/include/hw/virtio/virtio-bus.h
@@ -47,7 +47,6 @@ typedef struct VirtioBusClass {
     int (*load_config)(DeviceState *d, QEMUFile *f);
     int (*load_queue)(DeviceState *d, int n, QEMUFile *f);
     int (*load_done)(DeviceState *d, QEMUFile *f);
-    unsigned (*get_features)(DeviceState *d);
     bool (*query_guest_notifiers)(DeviceState *d);
     int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assign);
     int (*set_host_notifier)(DeviceState *d, int n, bool assigned);
@@ -56,7 +55,7 @@ typedef struct VirtioBusClass {
      * transport independent init function.
      * This is called by virtio-bus just after the device is plugged.
      */
-    void (*device_plugged)(DeviceState *d);
+    void (*device_plugged)(DeviceState *d, Error **errp);
     /*
      * transport independent exit function.
      * This is called by virtio-bus just before the device is unplugged.
@@ -75,7 +74,7 @@ struct VirtioBusState {
     BusState parent_obj;
 };
 
-int virtio_bus_device_plugged(VirtIODevice *vdev);
+void virtio_bus_device_plugged(VirtIODevice *vdev, Error **errp);
 void virtio_bus_reset(VirtioBusState *bus);
 void virtio_bus_device_unplugged(VirtIODevice *bus);
 /* Get the device id of the plugged device. */
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index ba74765d0b..7222a904dc 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -48,7 +48,7 @@ typedef struct VirtQueueElement
     struct iovec out_sg[VIRTQUEUE_MAX_SIZE];
 } VirtQueueElement;
 
-#define VIRTIO_PCI_QUEUE_MAX 64
+#define VIRTIO_QUEUE_MAX 1024
 
 #define VIRTIO_NO_VECTOR 0xffff
 
@@ -73,7 +73,8 @@ struct VirtIODevice
     uint8_t status;
     uint8_t isr;
     uint16_t queue_sel;
-    uint32_t guest_features;
+    uint64_t guest_features;
+    uint64_t host_features;
     size_t config_len;
     void *config;
     uint16_t config_vector;
@@ -95,8 +96,8 @@ typedef struct VirtioDeviceClass {
     /* This is what a VirtioDevice must implement */
     DeviceRealize realize;
     DeviceUnrealize unrealize;
-    uint32_t (*get_features)(VirtIODevice *vdev, uint32_t requested_features);
-    uint32_t (*bad_features)(VirtIODevice *vdev);
+    uint64_t (*get_features)(VirtIODevice *vdev, uint64_t requested_features);
+    uint64_t (*bad_features)(VirtIODevice *vdev);
     void (*set_features)(VirtIODevice *vdev, uint32_t val);
     void (*get_config)(VirtIODevice *vdev, uint8_t *config);
     void (*set_config)(VirtIODevice *vdev, const uint8_t *config);
@@ -175,6 +176,7 @@ void virtio_queue_set_addr(VirtIODevice *vdev, int n, hwaddr addr);
 hwaddr virtio_queue_get_addr(VirtIODevice *vdev, int n);
 void virtio_queue_set_num(VirtIODevice *vdev, int n, int num);
 int virtio_queue_get_num(VirtIODevice *vdev, int n);
+int virtio_get_num_queues(VirtIODevice *vdev);
 void virtio_queue_set_align(VirtIODevice *vdev, int n, int align);
 void virtio_queue_notify(VirtIODevice *vdev, int n);
 uint16_t virtio_queue_vector(VirtIODevice *vdev, int n);
@@ -193,10 +195,12 @@ typedef struct VirtIOSCSIConf VirtIOSCSIConf;
 typedef struct VirtIORNGConf VirtIORNGConf;
 
 #define DEFINE_VIRTIO_COMMON_FEATURES(_state, _field) \
-	DEFINE_PROP_BIT("indirect_desc", _state, _field, \
-			VIRTIO_RING_F_INDIRECT_DESC, true), \
-	DEFINE_PROP_BIT("event_idx", _state, _field, \
-			VIRTIO_RING_F_EVENT_IDX, true)
+    DEFINE_PROP_BIT64("indirect_desc", _state, _field,    \
+                      VIRTIO_RING_F_INDIRECT_DESC, true), \
+    DEFINE_PROP_BIT64("event_idx", _state, _field,        \
+                      VIRTIO_RING_F_EVENT_IDX, true),     \
+    DEFINE_PROP_BIT64("notify_on_empty", _state, _field,  \
+                      VIRTIO_F_NOTIFY_ON_EMPTY, true)
 
 hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n);
 hwaddr virtio_queue_get_avail_addr(VirtIODevice *vdev, int n);
@@ -223,21 +227,21 @@ void virtio_irq(VirtQueue *vq);
 VirtQueue *virtio_vector_first_queue(VirtIODevice *vdev, uint16_t vector);
 VirtQueue *virtio_vector_next_queue(VirtQueue *vq);
 
-static inline void virtio_add_feature(uint32_t *features, unsigned int fbit)
+static inline void virtio_add_feature(uint64_t *features, unsigned int fbit)
 {
-    assert(fbit < 32);
+    assert(fbit < 64);
     *features |= (1 << fbit);
 }
 
-static inline void virtio_clear_feature(uint32_t *features, unsigned int fbit)
+static inline void virtio_clear_feature(uint64_t *features, unsigned int fbit)
 {
-    assert(fbit < 32);
+    assert(fbit < 64);
     *features &= ~(1 << fbit);
 }
 
-static inline bool __virtio_has_feature(uint32_t features, unsigned int fbit)
+static inline bool __virtio_has_feature(uint64_t features, unsigned int fbit)
 {
-    assert(fbit < 32);
+    assert(fbit < 64);
     return !!(features & (1 << fbit));
 }
 
diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
index 9b81ce9189..c1438907de 100644
--- a/include/sysemu/tpm.h
+++ b/include/sysemu/tpm.h
@@ -20,11 +20,24 @@ int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
 int tpm_init(void);
 void tpm_cleanup(void);
 
+typedef enum  TPMVersion {
+    TPM_VERSION_UNSPEC = 0,
+    TPM_VERSION_1_2 = 1,
+    TPM_VERSION_2_0 = 2,
+} TPMVersion;
+
+TPMVersion tpm_tis_get_tpm_version(Object *obj);
+
 #define TYPE_TPM_TIS                "tpm-tis"
 
-static inline bool tpm_find(void)
+static inline TPMVersion tpm_get_version(void)
 {
-    return object_resolve_path_type("", TYPE_TPM_TIS, NULL);
+    Object *obj = object_resolve_path_type("", TYPE_TPM_TIS, NULL);
+
+    if (obj) {
+        return tpm_tis_get_tpm_version(obj);
+    }
+    return TPM_VERSION_UNSPEC;
 }
 
 #endif /* QEMU_TPM_H */
diff --git a/include/sysemu/tpm_backend.h b/include/sysemu/tpm_backend.h
index 540ee25477..0a366be0f2 100644
--- a/include/sysemu/tpm_backend.h
+++ b/include/sysemu/tpm_backend.h
@@ -88,6 +88,10 @@ struct TPMDriverOps {
     void (*cancel_cmd)(TPMBackend *t);
 
     bool (*get_tpm_established_flag)(TPMBackend *t);
+
+    int (*reset_tpm_established_flag)(TPMBackend *t, uint8_t locty);
+
+    TPMVersion (*get_tpm_version)(TPMBackend *t);
 };
 
 
@@ -192,6 +196,15 @@ void tpm_backend_cancel_cmd(TPMBackend *s);
 bool tpm_backend_get_tpm_established_flag(TPMBackend *s);
 
 /**
+ * tpm_backend_reset_tpm_established_flag:
+ * @s: the backend
+ * @locty: the locality number
+ *
+ * Reset the TPM establishment flag.
+ */
+int tpm_backend_reset_tpm_established_flag(TPMBackend *s, uint8_t locty);
+
+/**
  * tpm_backend_open:
  * @s: the backend to open
  * @errp: a pointer to return the #Error object if an error occurs.
@@ -201,6 +214,16 @@ bool tpm_backend_get_tpm_established_flag(TPMBackend *s);
  */
 void tpm_backend_open(TPMBackend *s, Error **errp);
 
+/**
+ * tpm_backend_get_tpm_version:
+ * @s: the backend to call into
+ *
+ * Get the TPM Version that is emulated at the backend.
+ *
+ * Returns TPMVersion.
+ */
+TPMVersion tpm_backend_get_tpm_version(TPMBackend *s);
+
 TPMBackend *qemu_find_tpm(const char *id);
 
 const TPMDriverOps *tpm_get_backend_driver(const char *type);