Merge commit 'df84f17' into HEAD

[mirror_qemu.git] / hw / rtc / mc146818rtc.c

diff --git a/hw/rtc/mc146818rtc.c b/hw/rtc/mc146818rtc.c
index 9d4ed54f65e215300ff3902e9a7cf5c9442bce12..ee6bf82b400a3d9a9e252596c599c739a40ce7ce 100644 (file)
--- a/hw/rtc/mc146818rtc.c
+++ b/hw/rtc/mc146818rtc.c
@@ -38,12 +38,13 @@
 #include "hw/rtc/mc146818rtc_regs.h"
 #include "migration/vmstate.h"
 #include "qapi/error.h"
-#include "qapi/qapi-commands-misc-target.h"
 #include "qapi/qapi-events-misc-target.h"
 #include "qapi/visitor.h"
 #include "exec/address-spaces.h"
+#include "hw/rtc/mc146818rtc_regs.h"
 
 #ifdef TARGET_I386
+#include "qapi/qapi-commands-misc-target.h"
 #include "hw/i386/apic.h"
 #endif
 
@@ -72,36 +73,6 @@
 #define RTC_CLOCK_RATE            32768
 #define UIP_HOLD_LENGTH           (8 * NANOSECONDS_PER_SECOND / 32768)
 
-#define MC146818_RTC(obj) OBJECT_CHECK(RTCState, (obj), TYPE_MC146818_RTC)
-
-typedef struct RTCState {
-    ISADevice parent_obj;
-
-    MemoryRegion io;
-    MemoryRegion coalesced_io;
-    uint8_t cmos_data[128];
-    uint8_t cmos_index;
-    int32_t base_year;
-    uint64_t base_rtc;
-    uint64_t last_update;
-    int64_t offset;
-    qemu_irq irq;
-    int it_shift;
-    /* periodic timer */
-    QEMUTimer *periodic_timer;
-    int64_t next_periodic_time;
-    /* update-ended timer */
-    QEMUTimer *update_timer;
-    uint64_t next_alarm_time;
-    uint16_t irq_reinject_on_ack_count;
-    uint32_t irq_coalesced;
-    uint32_t period;
-    QEMUTimer *coalesced_timer;
-    LostTickPolicy lost_tick_policy;
-    Notifier suspend_notifier;
-    QLIST_ENTRY(RTCState) link;
-} RTCState;
-
 static void rtc_set_time(RTCState *s);
 static void rtc_update_time(RTCState *s);
 static void rtc_set_cmos(RTCState *s, const struct tm *tm);
@@ -204,24 +175,28 @@ periodic_timer_update(RTCState *s, int64_t current_time, uint32_t old_period)
 
     period = rtc_periodic_clock_ticks(s);
 
-    if (period) {
-        /* compute 32 khz clock */
-        cur_clock =
-            muldiv64(current_time, RTC_CLOCK_RATE, NANOSECONDS_PER_SECOND);
+    if (!period) {
+        s->irq_coalesced = 0;
+        timer_del(s->periodic_timer);
+        return;
+    }
 
-        /*
-        * if the periodic timer's update is due to period re-configuration,
-        * we should count the clock since last interrupt.
-        */
-        if (old_period) {
-            int64_t last_periodic_clock, next_periodic_clock;
-
-            next_periodic_clock = muldiv64(s->next_periodic_time,
-                                    RTC_CLOCK_RATE, NANOSECONDS_PER_SECOND);
-            last_periodic_clock = next_periodic_clock - old_period;
-            lost_clock = cur_clock - last_periodic_clock;
-            assert(lost_clock >= 0);
-        }
+    /* compute 32 khz clock */
+    cur_clock =
+        muldiv64(current_time, RTC_CLOCK_RATE, NANOSECONDS_PER_SECOND);
+
+    /*
+     * if the periodic timer's update is due to period re-configuration,
+     * we should count the clock since last interrupt.
+     */
+    if (old_period) {
+        int64_t last_periodic_clock, next_periodic_clock;
+
+        next_periodic_clock = muldiv64(s->next_periodic_time,
+                                RTC_CLOCK_RATE, NANOSECONDS_PER_SECOND);
+        last_periodic_clock = next_periodic_clock - old_period;
+        lost_clock = cur_clock - last_periodic_clock;
+        assert(lost_clock >= 0);
 
         /*
          * s->irq_coalesced can change for two reasons:
@@ -252,22 +227,19 @@ periodic_timer_update(RTCState *s, int64_t current_time, uint32_t old_period)
                 rtc_coalesced_timer_update(s);
             }
         } else {
-           /*
+            /*
              * no way to compensate the interrupt if LOST_TICK_POLICY_SLEW
              * is not used, we should make the time progress anyway.
              */
             lost_clock = MIN(lost_clock, period);
         }
+    }
 
-        assert(lost_clock >= 0 && lost_clock <= period);
+    assert(lost_clock >= 0 && lost_clock <= period);
 
-        next_irq_clock = cur_clock + period - lost_clock;
-        s->next_periodic_time = periodic_clock_to_ns(next_irq_clock) + 1;
-        timer_mod(s->periodic_timer, s->next_periodic_time);
-    } else {
-        s->irq_coalesced = 0;
-        timer_del(s->periodic_timer);
-    }
+    next_irq_clock = cur_clock + period - lost_clock;
+    s->next_periodic_time = periodic_clock_to_ns(next_irq_clock) + 1;
+    timer_mod(s->periodic_timer, s->next_periodic_time);
 }
 
 static void rtc_periodic_timer(void *opaque)
@@ -993,17 +965,16 @@ static void rtc_realizefn(DeviceState *dev, Error **errp)
     object_property_add_tm(OBJECT(s), "date", rtc_get_date, NULL);
 
     qdev_init_gpio_out(dev, &s->irq, 1);
+    QLIST_INSERT_HEAD(&rtc_devices, s, link);
 }
 
 ISADevice *mc146818_rtc_init(ISABus *bus, int base_year, qemu_irq intercept_irq)
 {
     DeviceState *dev;
     ISADevice *isadev;
-    RTCState *s;
 
     isadev = isa_create(bus, TYPE_MC146818_RTC);
     dev = DEVICE(isadev);
-    s = MC146818_RTC(isadev);
     qdev_prop_set_int32(dev, "base_year", base_year);
     qdev_init_nofail(dev);
     if (intercept_irq) {
@@ -1011,9 +982,8 @@ ISADevice *mc146818_rtc_init(ISABus *bus, int base_year, qemu_irq intercept_irq)
     } else {
         isa_connect_gpio_out(isadev, 0, RTC_ISA_IRQ);
     }
-    QLIST_INSERT_HEAD(&rtc_devices, s, link);
 
-    object_property_add_alias(qdev_get_machine(), "rtc-time", OBJECT(s),
+    object_property_add_alias(qdev_get_machine(), "rtc-time", OBJECT(isadev),
                               "date", NULL);
 
     return isadev;
@@ -1045,8 +1015,6 @@ static void rtc_class_initfn(ObjectClass *klass, void *data)
     dc->reset = rtc_resetdev;
     dc->vmsd = &vmstate_rtc;
     dc->props = mc146818rtc_properties;
-    /* Reason: needs to be wired up by rtc_init() */
-    dc->user_creatable = false;
 }
 
 static const TypeInfo mc146818rtc_info = {