rtc: add RTC_ISA_BASE

Add and use RTC_ISA_BASE define instead of hardcoding 0x70.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20200429140003.7336-7-kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>

diff --git a/hw/rtc/mc146818rtc.c b/hw/rtc/mc146818rtc.c
index dc4269cc55cb8e3e82f0bcc2cb0a4bdfabfbbe40..d18c09911be272778a90fc2a7020a4a6a5669571 100644 (file)
--- a/hw/rtc/mc146818rtc.c
+++ b/hw/rtc/mc146818rtc.c
@@ -908,7 +908,6 @@ static void rtc_realizefn(DeviceState *dev, Error **errp)
 {
     ISADevice *isadev = ISA_DEVICE(dev);
     RTCState *s = MC146818_RTC(dev);
-    int base = 0x70;
 
     s->cmos_data[RTC_REG_A] = 0x26;
     s->cmos_data[RTC_REG_B] = 0x02;
@@ -951,7 +950,7 @@ static void rtc_realizefn(DeviceState *dev, Error **errp)
     qemu_register_suspend_notifier(&s->suspend_notifier);
 
     memory_region_init_io(&s->io, OBJECT(s), &cmos_ops, s, "rtc", 2);
-    isa_register_ioport(isadev, &s->io, base);
+    isa_register_ioport(isadev, &s->io, RTC_ISA_BASE);
 
     /* register rtc 0x70 port for coalesced_pio */
     memory_region_set_flush_coalesced(&s->io);
@@ -960,7 +959,7 @@ static void rtc_realizefn(DeviceState *dev, Error **errp)
     memory_region_add_subregion(&s->io, 0, &s->coalesced_io);
     memory_region_add_coalescing(&s->coalesced_io, 0, 1);
 
-    qdev_set_legacy_instance_id(dev, base, 3);
+    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, NULL);

diff --git a/include/hw/rtc/mc146818rtc.h b/include/hw/rtc/mc146818rtc.h
index 10c93a096a1d495bbdf560744e285e53d076aed3..3713181b56feab8ffdb70296e6763d2830462aab 100644 (file)
--- a/include/hw/rtc/mc146818rtc.h
+++ b/include/hw/rtc/mc146818rtc.h
@@ -47,6 +47,7 @@ typedef struct RTCState {
 } RTCState;
 
 #define RTC_ISA_IRQ 8
+#define RTC_ISA_BASE 0x70
 
 ISADevice *mc146818_rtc_init(ISABus *bus, int base_year,
                              qemu_irq intercept_irq);