Merge remote-tracking branch 'afaerber/tags/qom-devices-for-anthony' into staging

QOM infrastructure fixes and device conversions

* QOM interface fixes and unit test
* Device no_user sanitization and documentation
* Device error reporting improvement
* Conversion of APIC, ICC, IOAPIC to QOM realization model

# gpg: Signature made Tue 24 Dec 2013 09:04:05 AM PST using RSA key ID 3E7E013F
# gpg: Good signature from "Andreas Färber <afaerber@suse.de>"
# gpg:                 aka "Andreas Färber <afaerber@suse.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 174F 0347 1BCC 221A 6175  6F96 FA2E D12D 3E7E 013F

* afaerber/tags/qom-devices-for-anthony: (24 commits)
  qdev-monitor: Improve error message for -device nonexistant
  ioapic: QOM'ify ioapic
  ioapic: Cleanup for QOM'ification
  icc_bus: QOM'ify ICC
  apic: QOM'ify APIC
  apic: Cleanup for QOM'ification
  qdev: Drop misleading qbus_free() function
  qom: Detect bad reentrance during object_class_foreach()
  tests: Test QOM interface casting
  qom: Do not register interface "types" in the type table and fix names
  qom: Split out object and class caches
  qdev: Document that pointer properties kill device_add
  hw: cannot_instantiate_with_device_add_yet due to pointer props
  qdev-monitor: Avoid device_add crashing on non-device driver name
  qdev: Do not let the user try to device_add when it cannot work
  isa: Clean up use of cannot_instantiate_with_device_add_yet
  vt82c686: Clean up use of cannot_instantiate_with_device_add_yet
  piix3 piix4: Clean up use of cannot_instantiate_with_device_add_yet
  ich9: Document why cannot_instantiate_with_device_add_yet
  pci-host: Consistently set cannot_instantiate_with_device_add_yet
  ...

6 files changed, 36 insertions, 7 deletions

diff --git a/include/hw/cpu/icc_bus.h b/include/hw/cpu/icc_bus.h
index b5500708dc..98a979fa1c 100644
--- a/include/hw/cpu/icc_bus.h
+++ b/include/hw/cpu/icc_bus.h
@@ -66,7 +66,7 @@ typedef struct ICCDeviceClass {
     DeviceClass parent_class;
     /*< public >*/
 
-    int (*init)(ICCDevice *dev); /* TODO replace with QOM realize */
+    DeviceRealize realize;
 } ICCDeviceClass;
 
 #define TYPE_ICC_DEVICE "icc-device"
diff --git a/include/hw/i386/apic_internal.h b/include/hw/i386/apic_internal.h
index 1b0a7fbfad..70542a6f43 100644
--- a/include/hw/i386/apic_internal.h
+++ b/include/hw/i386/apic_internal.h
@@ -80,7 +80,7 @@ typedef struct APICCommonClass
 {
     ICCDeviceClass parent_class;
 
-    void (*init)(APICCommonState *s);
+    DeviceRealize realize;
     void (*set_base)(APICCommonState *s, uint64_t val);
     void (*set_tpr)(APICCommonState *s, uint8_t val);
     uint8_t (*get_tpr)(APICCommonState *s);
diff --git a/include/hw/i386/ioapic_internal.h b/include/hw/i386/ioapic_internal.h
index 25576c819e..3be3352185 100644
--- a/include/hw/i386/ioapic_internal.h
+++ b/include/hw/i386/ioapic_internal.h
@@ -83,7 +83,8 @@ typedef struct IOAPICCommonState IOAPICCommonState;
 
 typedef struct IOAPICCommonClass {
     SysBusDeviceClass parent_class;
-    void (*init)(IOAPICCommonState *s, int instance_no);
+
+    DeviceRealize realize;
     void (*pre_save)(IOAPICCommonState *s);
     void (*post_load)(IOAPICCommonState *s);
 } IOAPICCommonClass;
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index f2043a69c2..651c3e54ee 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -97,7 +97,18 @@ typedef struct DeviceClass {
     const char *fw_name;
     const char *desc;
     Property *props;
-    int no_user;
+
+    /*
+     * Shall we hide this device model from -device / device_add?
+     * All devices should support instantiation with device_add, and
+     * this flag should not exist.  But we're not there, yet.  Some
+     * devices fail to instantiate with cryptic error messages.
+     * Others instantiate, but don't work.  Exposing users to such
+     * behavior would be cruel; this flag serves to protect them.  It
+     * should never be set without a comment explaining why it is set.
+     * TODO remove once we're there
+     */
+    bool cannot_instantiate_with_device_add_yet;
 
     /* callbacks */
     void (*reset)(DeviceState *dev);
@@ -272,8 +283,6 @@ void qdev_reset_all(DeviceState *dev);
 void qbus_reset_all(BusState *bus);
 void qbus_reset_all_fn(void *opaque);
 
-void qbus_free(BusState *bus);
-
 /* This should go away once we get rid of the NULL bus hack */
 BusState *sysbus_get_default(void);
 
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
index 692f82e935..77c6f7c037 100644
--- a/include/hw/qdev-properties.h
+++ b/include/hw/qdev-properties.h
@@ -122,8 +122,25 @@ extern PropertyInfo qdev_prop_arraylen;
 #define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d)                   \
     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_pci_devfn, int32_t)
 
+/*
+ * Please avoid pointer properties.  If you must use them, you must
+ * cover them in their device's class init function as follows:
+ *
+ * - If the property must be set, the device cannot be used with
+ *   device_add, so add code like this:
+ *   |* Reason: pointer property "NAME-OF-YOUR-PROP" *|
+ *   DeviceClass *dc = DEVICE_CLASS(class);
+ *   dc->cannot_instantiate_with_device_add_yet = true;
+ *
+ * - If the property may safely remain null, document it like this:
+ *   |*
+ *    * Note: pointer property "interrupt_vector" may remain null, thus
+ *    * no need for dc->cannot_instantiate_with_device_add_yet = true;
+ *    *|
+ */
 #define DEFINE_PROP_PTR(_n, _s, _f)             \
     DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, void*)
+
 #define DEFINE_PROP_CHR(_n, _s, _f)             \
     DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharDriverState*)
 #define DEFINE_PROP_STRING(_n, _s, _f)             \
diff --git a/include/qom/object.h b/include/qom/object.h
index a275db2092..e0ff212cb6 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -358,7 +358,8 @@ struct ObjectClass
     Type type;
     GSList *interfaces;
 
-    const char *cast_cache[OBJECT_CLASS_CAST_CACHE];
+    const char *object_cast_cache[OBJECT_CLASS_CAST_CACHE];
+    const char *class_cast_cache[OBJECT_CLASS_CAST_CACHE];
 
     ObjectUnparent *unparent;
 };
@@ -535,6 +536,7 @@ struct InterfaceClass
     ObjectClass parent_class;
     /*< private >*/
     ObjectClass *concrete_class;
+    Type interface_type;
 };
 
 #define TYPE_INTERFACE "interface"