Merge tag 'pull-target-arm-20221216' of https://git.linaro.org/people/pmaydell/qemu-arm into staging

reset refactoring queue:
 * remove uses of qdev_reset_all(), qbus_reset_all(), device_legacy_reset()
 * convert various devices to 3-phase reset, so we can remove their
   uses of device_class_set_parent_reset()

# gpg: Signature made Fri 16 Dec 2022 21:41:11 GMT
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# gpg:                 aka "Peter Maydell <peter@archaic.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* tag 'pull-target-arm-20221216' of https://git.linaro.org/people/pmaydell/qemu-arm: (36 commits)
  hw/pci-host/pnv_phb3_msi: Convert TYPE_PHB3_MSI to 3-phase reset
  hw/intc/xics: Convert TYPE_ICS to 3-phase reset
  hw/intc/xics: Reset TYPE_ICS objects with device_cold_reset()
  pci: Convert child classes of TYPE_PCIE_ROOT_PORT to 3-phase reset
  pci: Convert TYPE_PCIE_ROOT_PORT to 3-phase reset
  hw/display/virtio-vga: Convert TYPE_VIRTIO_VGA_BASE to 3-phase reset
  hw/virtio: Convert TYPE_VIRTIO_PCI to 3-phase reset
  target/xtensa: Convert to 3-phase reset
  target/tricore: Convert to 3-phase reset
  target/sparc: Convert to 3-phase reset
  target/sh4: Convert to 3-phase reset
  target/rx: Convert to 3-phase reset
  target/riscv: Convert to 3-phase reset
  target/ppc: Convert to 3-phase reset
  target/openrisc: Convert to 3-phase reset
  target/nios2: Convert to 3-phase reset
  target/mips: Convert to 3-phase reset
  target/microblaze: Convert to 3-phase reset
  target/m68k: Convert to 3-phase reset
  target/loongarch: Convert to 3-phase reset
  ...

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

3 files changed, 4 insertions, 73 deletions

diff --git a/hw/core/cpu-common.c b/hw/core/cpu-common.c
index f9fdd46b9d..78b5f350a0 100644
--- a/hw/core/cpu-common.c
+++ b/hw/core/cpu-common.c
@@ -116,9 +116,9 @@ void cpu_reset(CPUState *cpu)
     trace_guest_cpu_reset(cpu);
 }
 
-static void cpu_common_reset(DeviceState *dev)
+static void cpu_common_reset_hold(Object *obj)
 {
-    CPUState *cpu = CPU(dev);
+    CPUState *cpu = CPU(obj);
     CPUClass *cc = CPU_GET_CLASS(cpu);
 
     if (qemu_loglevel_mask(CPU_LOG_RESET)) {
@@ -259,6 +259,7 @@ static int64_t cpu_common_get_arch_id(CPUState *cpu)
 static void cpu_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
+    ResettableClass *rc = RESETTABLE_CLASS(klass);
     CPUClass *k = CPU_CLASS(klass);
 
     k->parse_features = cpu_common_parse_features;
@@ -269,7 +270,7 @@ static void cpu_class_init(ObjectClass *klass, void *data)
     set_bit(DEVICE_CATEGORY_CPU, dc->categories);
     dc->realize = cpu_common_realizefn;
     dc->unrealize = cpu_common_unrealizefn;
-    dc->reset = cpu_common_reset;
+    rc->phases.hold = cpu_common_reset_hold;
     cpu_class_init_props(dc);
     /*
      * Reason: CPUs still need special care by board code: wiring up
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index c0b77a6295..d759c4602c 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -250,60 +250,6 @@ void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
     dev->alias_required_for_version = required_for_version;
 }
 
-static int qdev_prereset(DeviceState *dev, void *opaque)
-{
-    trace_qdev_reset_tree(dev, object_get_typename(OBJECT(dev)));
-    return 0;
-}
-
-static int qbus_prereset(BusState *bus, void *opaque)
-{
-    trace_qbus_reset_tree(bus, object_get_typename(OBJECT(bus)));
-    return 0;
-}
-
-static int qdev_reset_one(DeviceState *dev, void *opaque)
-{
-    device_legacy_reset(dev);
-
-    return 0;
-}
-
-static int qbus_reset_one(BusState *bus, void *opaque)
-{
-    BusClass *bc = BUS_GET_CLASS(bus);
-    trace_qbus_reset(bus, object_get_typename(OBJECT(bus)));
-    if (bc->reset) {
-        bc->reset(bus);
-    }
-    return 0;
-}
-
-void qdev_reset_all(DeviceState *dev)
-{
-    trace_qdev_reset_all(dev, object_get_typename(OBJECT(dev)));
-    qdev_walk_children(dev, qdev_prereset, qbus_prereset,
-                       qdev_reset_one, qbus_reset_one, NULL);
-}
-
-void qdev_reset_all_fn(void *opaque)
-{
-    qdev_reset_all(DEVICE(opaque));
-}
-
-void qbus_reset_all(BusState *bus)
-{
-    trace_qbus_reset_all(bus, object_get_typename(OBJECT(bus)));
-    qbus_walk_children(bus, qdev_prereset, qbus_prereset,
-                       qdev_reset_one, qbus_reset_one, NULL);
-}
-
-void qbus_reset_all_fn(void *opaque)
-{
-    BusState *bus = opaque;
-    qbus_reset_all(bus);
-}
-
 void device_cold_reset(DeviceState *dev)
 {
     resettable_reset(OBJECT(dev), RESET_TYPE_COLD);
@@ -922,16 +868,6 @@ void device_class_set_parent_unrealize(DeviceClass *dc,
     dc->unrealize = dev_unrealize;
 }
 
-void device_legacy_reset(DeviceState *dev)
-{
-    DeviceClass *klass = DEVICE_GET_CLASS(dev);
-
-    trace_qdev_reset(dev, object_get_typename(OBJECT(dev)));
-    if (klass->reset) {
-        klass->reset(dev);
-    }
-}
-
 Object *qdev_get_machine(void)
 {
     static Object *dev;
diff --git a/hw/core/trace-events b/hw/core/trace-events
index 9b3ecce3b2..56da55bd71 100644
--- a/hw/core/trace-events
+++ b/hw/core/trace-events
@@ -2,12 +2,6 @@
 loader_write_rom(const char *name, uint64_t gpa, uint64_t size, bool isrom) "%s: @0x%"PRIx64" size=0x%"PRIx64" ROM=%d"
 
 # qdev.c
-qdev_reset(void *obj, const char *objtype) "obj=%p(%s)"
-qdev_reset_all(void *obj, const char *objtype) "obj=%p(%s)"
-qdev_reset_tree(void *obj, const char *objtype) "obj=%p(%s)"
-qbus_reset(void *obj, const char *objtype) "obj=%p(%s)"
-qbus_reset_all(void *obj, const char *objtype) "obj=%p(%s)"
-qbus_reset_tree(void *obj, const char *objtype) "obj=%p(%s)"
 qdev_update_parent_bus(void *obj, const char *objtype, void *oldp, const char *oldptype, void *newp, const char *newptype) "obj=%p(%s) old_parent=%p(%s) new_parent=%p(%s)"
 
 # resettable.c