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hw/rtc/mc146818rtc: QOM'ify IRQ number

Browse source 
Exposing the IRQ number as a QOM property not only allows it to be
configurable but also to be displayed in HMP:

Before:

(qemu) info qtree
       ...
          dev: mc146818rtc, id ""
            gpio-out "" 1
            base_year = 0 (0x0)
            lost_tick_policy = "discard"

After:

          dev: mc146818rtc, id ""
            gpio-out "" 1
            base_year = 0 (0x0)
            irq = 8 (0x8)
            lost_tick_policy = "discard"

The reason the IRQ number didn's show up before is that this device does not
call isa_init_irq().

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220301220037.76555-2-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220307134353.1950-9-philippe.mathieu.daude@gmail.com>
Reviewed-by: Bernhard Beschow <shentey@gmail.com>
This commit is contained in:
Bernhard Beschow 2022-03-01 23:00:31 +01:00 committed by Philippe Mathieu-Daudé
parent aa85a461ef
commit 3b004a1654
3 changed files with 13 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
hw/isa/piix4.c
View file

@ -216,7 +216,7 @@ static void piix4_realize(PCIDevice *dev, Error **errp)
if (!qdev_realize(DEVICE(&s->rtc), BUS(isa_bus), errp)) {
return;
}
isa_init_irq(ISA_DEVICE(&s->rtc), &s->rtc.irq, RTC_ISA_IRQ);
isa_init_irq(ISA_DEVICE(&s->rtc), &s->rtc.irq, s->rtc.isairq);
}
static void piix4_init(Object *obj)

13
hw/rtc/mc146818rtc.c
View file

@ -912,6 +912,11 @@ static void rtc_realizefn(DeviceState *dev, Error **errp)
s->base_year = 0;
}
if (s->isairq >= ISA_NUM_IRQS) {
error_setg(errp, "Maximum value for \"irq\" is: %u", ISA_NUM_IRQS - 1);
return;
}
rtc_set_date_from_host(isadev);
switch (s->lost_tick_policy) {
@ -957,15 +962,17 @@ ISADevice *mc146818_rtc_init(ISABus *bus, int base_year, qemu_irq intercept_irq)
{
DeviceState *dev;
ISADevice *isadev;
RTCState *s;
isadev = isa_new(TYPE_MC146818_RTC);
dev = DEVICE(isadev);
s = MC146818_RTC(isadev);
qdev_prop_set_int32(dev, "base_year", base_year);
isa_realize_and_unref(isadev, bus, &error_fatal);
if (intercept_irq) {
qdev_connect_gpio_out(dev, 0, intercept_irq);
} else {
isa_connect_gpio_out(isadev, 0, RTC_ISA_IRQ);
isa_connect_gpio_out(isadev, 0, s->isairq);
}
object_property_add_alias(qdev_get_machine(), "rtc-time", OBJECT(isadev),
@ -976,6 +983,7 @@ ISADevice *mc146818_rtc_init(ISABus *bus, int base_year, qemu_irq intercept_irq)
static Property mc146818rtc_properties[] = {
DEFINE_PROP_INT32("base_year", RTCState, base_year, 1980),
DEFINE_PROP_UINT8("irq", RTCState, isairq, RTC_ISA_IRQ),
DEFINE_PROP_LOSTTICKPOLICY("lost_tick_policy", RTCState,
lost_tick_policy, LOST_TICK_POLICY_DISCARD),
DEFINE_PROP_END_OF_LIST(),
@ -1011,6 +1019,7 @@ static void rtc_reset_hold(Object *obj)
static void rtc_build_aml(ISADevice *isadev, Aml *scope)
{
RTCState *s = MC146818_RTC(isadev);
Aml *dev;
Aml *crs;
@ -1021,7 +1030,7 @@ static void rtc_build_aml(ISADevice *isadev, Aml *scope)
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, RTC_ISA_BASE, RTC_ISA_BASE,
0x01, 0x08));
aml_append(crs, aml_irq_no_flags(RTC_ISA_IRQ));
aml_append(crs, aml_irq_no_flags(s->isairq));
dev = aml_device("RTC");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0B00")));

1
include/hw/rtc/mc146818rtc.h
View file

@ -25,6 +25,7 @@ struct RTCState {
MemoryRegion coalesced_io;
uint8_t cmos_data[128];
uint8_t cmos_index;
uint8_t isairq;
int32_t base_year;
uint64_t base_rtc;
uint64_t last_update;