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authorPhilippe Mathieu-Daudé <f4bug@amsat.org>2021-05-02 18:39:31 +0200
committerLaurent Vivier <laurent@vivier.eu>2021-05-13 18:05:22 +0200
commitfae5a0420754453beca3407250899254fb6745a1 (patch)
tree9d0f760f6f6d075ee8e80fb8b971a9159f611a44 /hw/rtc
parent72fe4742c6e7fa3d237b5cb5866dfaf7733141e9 (diff)
hw/rtc/mc146818rtc: Convert to 3-phase reset (Resettable interface)
TYPE_MC146818_RTC is an ISA device, so its DeviceClass::reset() handler is called automatically when its qbus parent is reset (we don't need to register it manually). We have 2 reset() methods: a generic one and the qdev one. Merge them into a reset_enter handler (keeping the IRQ lowering to a reset_hold one), and remove the qemu_register_reset() call. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-Id: <20210502163931.552675-3-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'hw/rtc')
-rw-r--r--hw/rtc/mc146818rtc.c42
1 files changed, 22 insertions, 20 deletions
diff --git a/hw/rtc/mc146818rtc.c b/hw/rtc/mc146818rtc.c
index 3d2d3854e7..4fbafddb22 100644
--- a/hw/rtc/mc146818rtc.c
+++ b/hw/rtc/mc146818rtc.c
@@ -871,22 +871,6 @@ static void rtc_notify_suspend(Notifier *notifier, void *data)
rtc_set_memory(ISA_DEVICE(s), 0xF, 0xFE);
}
-static void rtc_reset(void *opaque)
-{
- RTCState *s = opaque;
-
- s->cmos_data[RTC_REG_B] &= ~(REG_B_PIE | REG_B_AIE | REG_B_SQWE);
- s->cmos_data[RTC_REG_C] &= ~(REG_C_UF | REG_C_IRQF | REG_C_PF | REG_C_AF);
- check_update_timer(s);
-
- qemu_irq_lower(s->irq);
-
- if (s->lost_tick_policy == LOST_TICK_POLICY_SLEW) {
- s->irq_coalesced = 0;
- s->irq_reinject_on_ack_count = 0;
- }
-}
-
static const MemoryRegionOps cmos_ops = {
.read = cmos_ioport_read,
.write = cmos_ioport_write,
@@ -961,7 +945,6 @@ static void rtc_realizefn(DeviceState *dev, Error **errp)
memory_region_add_coalescing(&s->coalesced_io, 0, 1);
qdev_set_legacy_instance_id(dev, RTC_ISA_BASE, 3);
- qemu_register_reset(rtc_reset, s);
object_property_add_tm(OBJECT(s), "date", rtc_get_date);
@@ -997,15 +980,32 @@ static Property mc146818rtc_properties[] = {
DEFINE_PROP_END_OF_LIST(),
};
-static void rtc_resetdev(DeviceState *d)
+static void rtc_reset_enter(Object *obj, ResetType type)
{
- RTCState *s = MC146818_RTC(d);
+ RTCState *s = MC146818_RTC(obj);
/* Reason: VM do suspend self will set 0xfe
* Reset any values other than 0xfe(Guest suspend case) */
if (s->cmos_data[0x0f] != 0xfe) {
s->cmos_data[0x0f] = 0x00;
}
+
+ s->cmos_data[RTC_REG_B] &= ~(REG_B_PIE | REG_B_AIE | REG_B_SQWE);
+ s->cmos_data[RTC_REG_C] &= ~(REG_C_UF | REG_C_IRQF | REG_C_PF | REG_C_AF);
+ check_update_timer(s);
+
+
+ if (s->lost_tick_policy == LOST_TICK_POLICY_SLEW) {
+ s->irq_coalesced = 0;
+ s->irq_reinject_on_ack_count = 0;
+ }
+}
+
+static void rtc_reset_hold(Object *obj)
+{
+ RTCState *s = MC146818_RTC(obj);
+
+ qemu_irq_lower(s->irq);
}
static void rtc_build_aml(ISADevice *isadev, Aml *scope)
@@ -1032,11 +1032,13 @@ static void rtc_build_aml(ISADevice *isadev, Aml *scope)
static void rtc_class_initfn(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
+ ResettableClass *rc = RESETTABLE_CLASS(klass);
ISADeviceClass *isa = ISA_DEVICE_CLASS(klass);
dc->realize = rtc_realizefn;
- dc->reset = rtc_resetdev;
dc->vmsd = &vmstate_rtc;
+ rc->phases.enter = rtc_reset_enter;
+ rc->phases.hold = rtc_reset_hold;
isa->build_aml = rtc_build_aml;
device_class_set_props(dc, mc146818rtc_properties);
set_bit(DEVICE_CATEGORY_MISC, dc->categories);