Merge remote-tracking branch 'remotes/armbru/tags/pull-qom-2020-06-15' into staging

QOM patches for 2020-06-15

# gpg: Signature made Mon 15 Jun 2020 21:07:19 BST
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-qom-2020-06-15: (84 commits)
  MAINTAINERS: Make section QOM cover hw/core/*bus.c as well
  qdev: qdev_init_nofail() is now unused, drop
  qdev: Convert bus-less devices to qdev_realize() with Coccinelle
  qdev: Use qdev_realize() in qdev_device_add()
  qdev: Make qdev_realize() support bus-less devices
  s390x/event-facility: Simplify creation of SCLP event devices
  microbit: Eliminate two local variables in microbit_init()
  sysbus: sysbus_init_child_obj() is now unused, drop
  sysbus: Convert qdev_set_parent_bus() use with Coccinelle, part 4
  sysbus: Convert qdev_set_parent_bus() use with Coccinelle, part 3
  sysbus: Convert qdev_set_parent_bus() use with Coccinelle, part 2
  sysbus: Convert qdev_set_parent_bus() use with Coccinelle, part 1
  qdev: Drop qdev_realize() support for null bus
  sysbus: Convert to sysbus_realize() etc. with Coccinelle
  sysbus: New sysbus_realize(), sysbus_realize_and_unref()
  sysbus: Tidy up sysbus_init_child_obj()'s @childsize arg, part 2
  hw/arm/armsse: Pass correct child size to sysbus_init_child_obj()
  sysbus: Tidy up sysbus_init_child_obj()'s @childsize arg, part 1
  microbit: Tidy up sysbus_init_child_obj() @child argument
  sysbus: Drop useless OBJECT() in sysbus_init_child_obj() calls
  ...

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

1 files changed, 27 insertions, 11 deletions

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 3c06a0ac6d..7070a116ea 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -83,6 +83,10 @@ enum SDCardStates {
 struct SDState {
     DeviceState parent_obj;
 
+    /* If true, created by sd_init() for a non-qdevified caller */
+    /* TODO purge them with fire */
+    bool me_no_qdev_me_kill_mammoth_with_rocks;
+
     /* SD Memory Card Registers */
     uint32_t ocr;
     uint8_t scr[8];
@@ -129,6 +133,8 @@ struct SDState {
     bool cmd_line;
 };
 
+static void sd_realize(DeviceState *dev, Error **errp);
+
 static const char *sd_state_name(enum SDCardStates state)
 {
     static const char *state_name[] = {
@@ -590,7 +596,7 @@ static void sd_cardchange(void *opaque, bool load, Error **errp)
 {
     SDState *sd = opaque;
     DeviceState *dev = DEVICE(sd);
-    SDBus *sdbus = SD_BUS(qdev_get_parent_bus(dev));
+    SDBus *sdbus;
     bool inserted = sd_get_inserted(sd);
     bool readonly = sd_get_readonly(sd);
 
@@ -601,18 +607,16 @@ static void sd_cardchange(void *opaque, bool load, Error **errp)
         trace_sdcard_ejected();
     }
 
-    /* The IRQ notification is for legacy non-QOM SD controller devices;
-     * QOMified controllers use the SDBus APIs.
-     */
-    if (sdbus) {
-        sdbus_set_inserted(sdbus, inserted);
+    if (sd->me_no_qdev_me_kill_mammoth_with_rocks) {
+        qemu_set_irq(sd->inserted_cb, inserted);
         if (inserted) {
-            sdbus_set_readonly(sdbus, readonly);
+            qemu_set_irq(sd->readonly_cb, readonly);
         }
     } else {
-        qemu_set_irq(sd->inserted_cb, inserted);
+        sdbus = SD_BUS(qdev_get_parent_bus(dev));
+        sdbus_set_inserted(sdbus, inserted);
         if (inserted) {
-            qemu_set_irq(sd->readonly_cb, readonly);
+            sdbus_set_readonly(sdbus, readonly);
         }
     }
 }
@@ -697,6 +701,7 @@ SDState *sd_init(BlockBackend *blk, bool is_spi)
 {
     Object *obj;
     DeviceState *dev;
+    SDState *sd;
     Error *err = NULL;
 
     obj = object_new(TYPE_SD_CARD);
@@ -707,13 +712,24 @@ SDState *sd_init(BlockBackend *blk, bool is_spi)
         return NULL;
     }
     qdev_prop_set_bit(dev, "spi", is_spi);
-    object_property_set_bool(obj, true, "realized", &err);
+
+    /*
+     * Realizing the device properly would put it into the QOM
+     * composition tree even though it is not plugged into an
+     * appropriate bus.  That's a no-no.  Hide the device from
+     * QOM/qdev, and call its qdev realize callback directly.
+     */
+    object_ref(obj);
+    object_unparent(obj);
+    sd_realize(dev, &err);
     if (err) {
         error_reportf_err(err, "sd_init failed: ");
         return NULL;
     }
 
-    return SD_CARD(dev);
+    sd = SD_CARD(dev);
+    sd->me_no_qdev_me_kill_mammoth_with_rocks = true;
+    return sd;
 }
 
 void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert)