/*
* QEMU MC146818 RTC emulation
- *
+ *
* Copyright (c) 2003-2004 Fabrice Bellard
- *
+ *
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-#include <getopt.h>
-#include <inttypes.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <time.h>
-#include <sys/time.h>
-#include <malloc.h>
-#include <termios.h>
-#include <sys/poll.h>
-#include <errno.h>
-#include <sys/wait.h>
-#include <netinet/in.h>
-
-#include "cpu.h"
-#include "vl.h"
+#include "hw.h"
+#include "qemu-timer.h"
+#include "sysemu.h"
+#include "pc.h"
+#include "apic.h"
+#include "isa.h"
+#include "mc146818rtc.h"
//#define DEBUG_CMOS
+//#define DEBUG_COALESCED
+
+#ifdef DEBUG_CMOS
+# define CMOS_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
+#else
+# define CMOS_DPRINTF(format, ...) do { } while (0)
+#endif
+
+#ifdef DEBUG_COALESCED
+# define DPRINTF_C(format, ...) printf(format, ## __VA_ARGS__)
+#else
+# define DPRINTF_C(format, ...) do { } while (0)
+#endif
+
+#define RTC_REINJECT_ON_ACK_COUNT 20
#define RTC_SECONDS 0
#define RTC_SECONDS_ALARM 1
#define RTC_REG_C 12
#define RTC_REG_D 13
-/* PC cmos mappings */
-#define REG_IBM_CENTURY_BYTE 0x32
-#define REG_IBM_PS2_CENTURY_BYTE 0x37
+#define REG_A_UIP 0x80
+
+#define REG_B_SET 0x80
+#define REG_B_PIE 0x40
+#define REG_B_AIE 0x20
+#define REG_B_UIE 0x10
+#define REG_B_SQWE 0x08
+#define REG_B_DM 0x04
+#define REG_B_24H 0x02
+
+#define REG_C_UF 0x10
+#define REG_C_IRQF 0x80
+#define REG_C_PF 0x40
+#define REG_C_AF 0x20
+
+typedef struct RTCState {
+ ISADevice dev;
+ uint8_t cmos_data[128];
+ uint8_t cmos_index;
+ struct tm current_tm;
+ int32_t base_year;
+ qemu_irq irq;
+ qemu_irq sqw_irq;
+ int it_shift;
+ /* periodic timer */
+ QEMUTimer *periodic_timer;
+ int64_t next_periodic_time;
+ /* second update */
+ int64_t next_second_time;
+ uint16_t irq_reinject_on_ack_count;
+ uint32_t irq_coalesced;
+ uint32_t period;
+ QEMUTimer *coalesced_timer;
+ QEMUTimer *second_timer;
+ QEMUTimer *second_timer2;
+} RTCState;
+
+static void rtc_set_time(RTCState *s);
+static void rtc_copy_date(RTCState *s);
+
+#ifdef TARGET_I386
+static void rtc_coalesced_timer_update(RTCState *s)
+{
+ if (s->irq_coalesced == 0) {
+ qemu_del_timer(s->coalesced_timer);
+ } else {
+ /* divide each RTC interval to 2 - 8 smaller intervals */
+ int c = MIN(s->irq_coalesced, 7) + 1;
+ int64_t next_clock = qemu_get_clock_ns(rtc_clock) +
+ muldiv64(s->period / c, get_ticks_per_sec(), 32768);
+ qemu_mod_timer(s->coalesced_timer, next_clock);
+ }
+}
+
+static void rtc_coalesced_timer(void *opaque)
+{
+ RTCState *s = opaque;
+
+ if (s->irq_coalesced != 0) {
+ apic_reset_irq_delivered();
+ s->cmos_data[RTC_REG_C] |= 0xc0;
+ DPRINTF_C("cmos: injecting from timer\n");
+ qemu_irq_raise(s->irq);
+ if (apic_get_irq_delivered()) {
+ s->irq_coalesced--;
+ DPRINTF_C("cmos: coalesced irqs decreased to %d\n",
+ s->irq_coalesced);
+ }
+ }
+
+ rtc_coalesced_timer_update(s);
+}
+#endif
+
+static void rtc_timer_update(RTCState *s, int64_t current_time)
+{
+ int period_code, period;
+ int64_t cur_clock, next_irq_clock;
+
+ period_code = s->cmos_data[RTC_REG_A] & 0x0f;
+ if (period_code != 0
+ && ((s->cmos_data[RTC_REG_B] & REG_B_PIE)
+ || ((s->cmos_data[RTC_REG_B] & REG_B_SQWE) && s->sqw_irq))) {
+ if (period_code <= 2)
+ period_code += 7;
+ /* period in 32 Khz cycles */
+ period = 1 << (period_code - 1);
+#ifdef TARGET_I386
+ if (period != s->period) {
+ s->irq_coalesced = (s->irq_coalesced * s->period) / period;
+ DPRINTF_C("cmos: coalesced irqs scaled to %d\n", s->irq_coalesced);
+ }
+ s->period = period;
+#endif
+ /* compute 32 khz clock */
+ cur_clock = muldiv64(current_time, 32768, get_ticks_per_sec());
+ next_irq_clock = (cur_clock & ~(period - 1)) + period;
+ s->next_periodic_time =
+ muldiv64(next_irq_clock, get_ticks_per_sec(), 32768) + 1;
+ qemu_mod_timer(s->periodic_timer, s->next_periodic_time);
+ } else {
+#ifdef TARGET_I386
+ s->irq_coalesced = 0;
+#endif
+ qemu_del_timer(s->periodic_timer);
+ }
+}
-RTCState rtc_state;
+static void rtc_periodic_timer(void *opaque)
+{
+ RTCState *s = opaque;
-static void cmos_ioport_write(CPUState *env, uint32_t addr, uint32_t data)
+ rtc_timer_update(s, s->next_periodic_time);
+ if (s->cmos_data[RTC_REG_B] & REG_B_PIE) {
+ s->cmos_data[RTC_REG_C] |= 0xc0;
+#ifdef TARGET_I386
+ if(rtc_td_hack) {
+ if (s->irq_reinject_on_ack_count >= RTC_REINJECT_ON_ACK_COUNT)
+ s->irq_reinject_on_ack_count = 0;
+ apic_reset_irq_delivered();
+ qemu_irq_raise(s->irq);
+ if (!apic_get_irq_delivered()) {
+ s->irq_coalesced++;
+ rtc_coalesced_timer_update(s);
+ DPRINTF_C("cmos: coalesced irqs increased to %d\n",
+ s->irq_coalesced);
+ }
+ } else
+#endif
+ qemu_irq_raise(s->irq);
+ }
+ if (s->cmos_data[RTC_REG_B] & REG_B_SQWE) {
+ /* Not square wave at all but we don't want 2048Hz interrupts!
+ Must be seen as a pulse. */
+ qemu_irq_raise(s->sqw_irq);
+ }
+}
+
+static void cmos_ioport_write(void *opaque, uint32_t addr, uint32_t data)
{
- RTCState *s = &rtc_state;
+ RTCState *s = opaque;
if ((addr & 1) == 0) {
s->cmos_index = data & 0x7f;
} else {
-#ifdef DEBUG_CMOS
- printf("cmos: write index=0x%02x val=0x%02x\n",
- s->cmos_index, data);
-#endif
- switch(addr) {
+ CMOS_DPRINTF("cmos: write index=0x%02x val=0x%02x\n",
+ s->cmos_index, data);
+ switch(s->cmos_index) {
case RTC_SECONDS_ALARM:
case RTC_MINUTES_ALARM:
case RTC_HOURS_ALARM:
- /* XXX: not supported */
s->cmos_data[s->cmos_index] = data;
break;
case RTC_SECONDS:
case RTC_MONTH:
case RTC_YEAR:
s->cmos_data[s->cmos_index] = data;
+ /* if in set mode, do not update the time */
+ if (!(s->cmos_data[RTC_REG_B] & REG_B_SET)) {
+ rtc_set_time(s);
+ }
break;
case RTC_REG_A:
+ /* UIP bit is read only */
+ s->cmos_data[RTC_REG_A] = (data & ~REG_A_UIP) |
+ (s->cmos_data[RTC_REG_A] & REG_A_UIP);
+ rtc_timer_update(s, qemu_get_clock_ns(rtc_clock));
+ break;
case RTC_REG_B:
- s->cmos_data[s->cmos_index] = data;
+ if (data & REG_B_SET) {
+ /* set mode: reset UIP mode */
+ s->cmos_data[RTC_REG_A] &= ~REG_A_UIP;
+ data &= ~REG_B_UIE;
+ } else {
+ /* if disabling set mode, update the time */
+ if (s->cmos_data[RTC_REG_B] & REG_B_SET) {
+ rtc_set_time(s);
+ }
+ }
+ if (((s->cmos_data[RTC_REG_B] ^ data) & (REG_B_DM | REG_B_24H)) &&
+ !(data & REG_B_SET)) {
+ /* If the time format has changed and not in set mode,
+ update the registers immediately. */
+ s->cmos_data[RTC_REG_B] = data;
+ rtc_copy_date(s);
+ } else {
+ s->cmos_data[RTC_REG_B] = data;
+ }
+ rtc_timer_update(s, qemu_get_clock_ns(rtc_clock));
break;
case RTC_REG_C:
case RTC_REG_D:
}
}
-static inline int to_bcd(int a)
+static inline int rtc_to_bcd(RTCState *s, int a)
{
- return ((a / 10) << 4) | (a % 10);
+ if (s->cmos_data[RTC_REG_B] & REG_B_DM) {
+ return a;
+ } else {
+ return ((a / 10) << 4) | (a % 10);
+ }
}
-static void cmos_update_time(RTCState *s)
+static inline int rtc_from_bcd(RTCState *s, int a)
{
- struct tm *tm;
- time_t ti;
+ if (s->cmos_data[RTC_REG_B] & REG_B_DM) {
+ return a;
+ } else {
+ return ((a >> 4) * 10) + (a & 0x0f);
+ }
+}
- ti = time(NULL);
- tm = gmtime(&ti);
- s->cmos_data[RTC_SECONDS] = to_bcd(tm->tm_sec);
- s->cmos_data[RTC_MINUTES] = to_bcd(tm->tm_min);
- s->cmos_data[RTC_HOURS] = to_bcd(tm->tm_hour);
- s->cmos_data[RTC_DAY_OF_WEEK] = to_bcd(tm->tm_wday);
- s->cmos_data[RTC_DAY_OF_MONTH] = to_bcd(tm->tm_mday);
- s->cmos_data[RTC_MONTH] = to_bcd(tm->tm_mon + 1);
- s->cmos_data[RTC_YEAR] = to_bcd(tm->tm_year % 100);
- s->cmos_data[REG_IBM_CENTURY_BYTE] = to_bcd((tm->tm_year / 100) + 19);
- s->cmos_data[REG_IBM_PS2_CENTURY_BYTE] = s->cmos_data[REG_IBM_CENTURY_BYTE];
+static void rtc_set_time(RTCState *s)
+{
+ struct tm *tm = &s->current_tm;
+
+ tm->tm_sec = rtc_from_bcd(s, s->cmos_data[RTC_SECONDS]);
+ tm->tm_min = rtc_from_bcd(s, s->cmos_data[RTC_MINUTES]);
+ tm->tm_hour = rtc_from_bcd(s, s->cmos_data[RTC_HOURS] & 0x7f);
+ if (!(s->cmos_data[RTC_REG_B] & REG_B_24H) &&
+ (s->cmos_data[RTC_HOURS] & 0x80)) {
+ tm->tm_hour += 12;
+ }
+ tm->tm_wday = rtc_from_bcd(s, s->cmos_data[RTC_DAY_OF_WEEK]) - 1;
+ tm->tm_mday = rtc_from_bcd(s, s->cmos_data[RTC_DAY_OF_MONTH]);
+ tm->tm_mon = rtc_from_bcd(s, s->cmos_data[RTC_MONTH]) - 1;
+ tm->tm_year = rtc_from_bcd(s, s->cmos_data[RTC_YEAR]) + s->base_year - 1900;
+
+ rtc_change_mon_event(tm);
+}
+
+static void rtc_copy_date(RTCState *s)
+{
+ const struct tm *tm = &s->current_tm;
+ int year;
+
+ s->cmos_data[RTC_SECONDS] = rtc_to_bcd(s, tm->tm_sec);
+ s->cmos_data[RTC_MINUTES] = rtc_to_bcd(s, tm->tm_min);
+ if (s->cmos_data[RTC_REG_B] & REG_B_24H) {
+ /* 24 hour format */
+ s->cmos_data[RTC_HOURS] = rtc_to_bcd(s, tm->tm_hour);
+ } else {
+ /* 12 hour format */
+ s->cmos_data[RTC_HOURS] = rtc_to_bcd(s, tm->tm_hour % 12);
+ if (tm->tm_hour >= 12)
+ s->cmos_data[RTC_HOURS] |= 0x80;
+ }
+ s->cmos_data[RTC_DAY_OF_WEEK] = rtc_to_bcd(s, tm->tm_wday + 1);
+ s->cmos_data[RTC_DAY_OF_MONTH] = rtc_to_bcd(s, tm->tm_mday);
+ s->cmos_data[RTC_MONTH] = rtc_to_bcd(s, tm->tm_mon + 1);
+ year = (tm->tm_year - s->base_year) % 100;
+ if (year < 0)
+ year += 100;
+ s->cmos_data[RTC_YEAR] = rtc_to_bcd(s, year);
}
-static uint32_t cmos_ioport_read(CPUState *env, uint32_t addr)
+/* month is between 0 and 11. */
+static int get_days_in_month(int month, int year)
{
- RTCState *s = &rtc_state;
+ static const int days_tab[12] = {
+ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
+ };
+ int d;
+ if ((unsigned )month >= 12)
+ return 31;
+ d = days_tab[month];
+ if (month == 1) {
+ if ((year % 4) == 0 && ((year % 100) != 0 || (year % 400) == 0))
+ d++;
+ }
+ return d;
+}
+
+/* update 'tm' to the next second */
+static void rtc_next_second(struct tm *tm)
+{
+ int days_in_month;
+
+ tm->tm_sec++;
+ if ((unsigned)tm->tm_sec >= 60) {
+ tm->tm_sec = 0;
+ tm->tm_min++;
+ if ((unsigned)tm->tm_min >= 60) {
+ tm->tm_min = 0;
+ tm->tm_hour++;
+ if ((unsigned)tm->tm_hour >= 24) {
+ tm->tm_hour = 0;
+ /* next day */
+ tm->tm_wday++;
+ if ((unsigned)tm->tm_wday >= 7)
+ tm->tm_wday = 0;
+ days_in_month = get_days_in_month(tm->tm_mon,
+ tm->tm_year + 1900);
+ tm->tm_mday++;
+ if (tm->tm_mday < 1) {
+ tm->tm_mday = 1;
+ } else if (tm->tm_mday > days_in_month) {
+ tm->tm_mday = 1;
+ tm->tm_mon++;
+ if (tm->tm_mon >= 12) {
+ tm->tm_mon = 0;
+ tm->tm_year++;
+ }
+ }
+ }
+ }
+ }
+}
+
+
+static void rtc_update_second(void *opaque)
+{
+ RTCState *s = opaque;
+ int64_t delay;
+
+ /* if the oscillator is not in normal operation, we do not update */
+ if ((s->cmos_data[RTC_REG_A] & 0x70) != 0x20) {
+ s->next_second_time += get_ticks_per_sec();
+ qemu_mod_timer(s->second_timer, s->next_second_time);
+ } else {
+ rtc_next_second(&s->current_tm);
+
+ if (!(s->cmos_data[RTC_REG_B] & REG_B_SET)) {
+ /* update in progress bit */
+ s->cmos_data[RTC_REG_A] |= REG_A_UIP;
+ }
+ /* should be 244 us = 8 / 32768 seconds, but currently the
+ timers do not have the necessary resolution. */
+ delay = (get_ticks_per_sec() * 1) / 100;
+ if (delay < 1)
+ delay = 1;
+ qemu_mod_timer(s->second_timer2,
+ s->next_second_time + delay);
+ }
+}
+
+static void rtc_update_second2(void *opaque)
+{
+ RTCState *s = opaque;
+
+ if (!(s->cmos_data[RTC_REG_B] & REG_B_SET)) {
+ rtc_copy_date(s);
+ }
+
+ /* check alarm */
+ if (s->cmos_data[RTC_REG_B] & REG_B_AIE) {
+ if (((s->cmos_data[RTC_SECONDS_ALARM] & 0xc0) == 0xc0 ||
+ rtc_from_bcd(s, s->cmos_data[RTC_SECONDS_ALARM]) == s->current_tm.tm_sec) &&
+ ((s->cmos_data[RTC_MINUTES_ALARM] & 0xc0) == 0xc0 ||
+ rtc_from_bcd(s, s->cmos_data[RTC_MINUTES_ALARM]) == s->current_tm.tm_min) &&
+ ((s->cmos_data[RTC_HOURS_ALARM] & 0xc0) == 0xc0 ||
+ rtc_from_bcd(s, s->cmos_data[RTC_HOURS_ALARM]) == s->current_tm.tm_hour)) {
+
+ s->cmos_data[RTC_REG_C] |= 0xa0;
+ qemu_irq_raise(s->irq);
+ }
+ }
+
+ /* update ended interrupt */
+ s->cmos_data[RTC_REG_C] |= REG_C_UF;
+ if (s->cmos_data[RTC_REG_B] & REG_B_UIE) {
+ s->cmos_data[RTC_REG_C] |= REG_C_IRQF;
+ qemu_irq_raise(s->irq);
+ }
+
+ /* clear update in progress bit */
+ s->cmos_data[RTC_REG_A] &= ~REG_A_UIP;
+
+ s->next_second_time += get_ticks_per_sec();
+ qemu_mod_timer(s->second_timer, s->next_second_time);
+}
+
+static uint32_t cmos_ioport_read(void *opaque, uint32_t addr)
+{
+ RTCState *s = opaque;
int ret;
if ((addr & 1) == 0) {
return 0xff;
case RTC_DAY_OF_MONTH:
case RTC_MONTH:
case RTC_YEAR:
- case REG_IBM_CENTURY_BYTE:
- case REG_IBM_PS2_CENTURY_BYTE:
- cmos_update_time(s);
ret = s->cmos_data[s->cmos_index];
break;
case RTC_REG_A:
ret = s->cmos_data[s->cmos_index];
- /* toggle update-in-progress bit for Linux (same hack as
- plex86) */
- s->cmos_data[RTC_REG_A] ^= 0x80;
break;
case RTC_REG_C:
ret = s->cmos_data[s->cmos_index];
- pic_set_irq(s->irq, 0);
- s->cmos_data[RTC_REG_C] = 0x00;
+ qemu_irq_lower(s->irq);
+#ifdef TARGET_I386
+ if(s->irq_coalesced &&
+ s->irq_reinject_on_ack_count < RTC_REINJECT_ON_ACK_COUNT) {
+ s->irq_reinject_on_ack_count++;
+ apic_reset_irq_delivered();
+ DPRINTF_C("cmos: injecting on ack\n");
+ qemu_irq_raise(s->irq);
+ if (apic_get_irq_delivered()) {
+ s->irq_coalesced--;
+ DPRINTF_C("cmos: coalesced irqs decreased to %d\n",
+ s->irq_coalesced);
+ }
+ break;
+ }
+#endif
+
+ s->cmos_data[RTC_REG_C] = 0x00;
break;
default:
ret = s->cmos_data[s->cmos_index];
break;
}
-#ifdef DEBUG_CMOS
- printf("cmos: read index=0x%02x val=0x%02x\n",
- s->cmos_index, ret);
-#endif
+ CMOS_DPRINTF("cmos: read index=0x%02x val=0x%02x\n",
+ s->cmos_index, ret);
return ret;
}
}
-void rtc_timer(void)
+void rtc_set_memory(ISADevice *dev, int addr, int val)
+{
+ RTCState *s = DO_UPCAST(RTCState, dev, dev);
+ if (addr >= 0 && addr <= 127)
+ s->cmos_data[addr] = val;
+}
+
+void rtc_set_date(ISADevice *dev, const struct tm *tm)
{
- RTCState *s = &rtc_state;
- if (s->cmos_data[RTC_REG_B] & 0x50) {
- pic_set_irq(s->irq, 1);
+ RTCState *s = DO_UPCAST(RTCState, dev, dev);
+ s->current_tm = *tm;
+ rtc_copy_date(s);
+}
+
+/* PC cmos mappings */
+#define REG_IBM_CENTURY_BYTE 0x32
+#define REG_IBM_PS2_CENTURY_BYTE 0x37
+
+static void rtc_set_date_from_host(ISADevice *dev)
+{
+ RTCState *s = DO_UPCAST(RTCState, dev, dev);
+ struct tm tm;
+ int val;
+
+ /* set the CMOS date */
+ qemu_get_timedate(&tm, 0);
+ rtc_set_date(dev, &tm);
+
+ val = rtc_to_bcd(s, (tm.tm_year / 100) + 19);
+ rtc_set_memory(dev, REG_IBM_CENTURY_BYTE, val);
+ rtc_set_memory(dev, REG_IBM_PS2_CENTURY_BYTE, val);
+}
+
+static int rtc_post_load(void *opaque, int version_id)
+{
+#ifdef TARGET_I386
+ RTCState *s = opaque;
+
+ if (version_id >= 2) {
+ if (rtc_td_hack) {
+ rtc_coalesced_timer_update(s);
+ }
}
+#endif
+ return 0;
}
-void rtc_init(int base, int irq)
+static const VMStateDescription vmstate_rtc = {
+ .name = "mc146818rtc",
+ .version_id = 2,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .post_load = rtc_post_load,
+ .fields = (VMStateField []) {
+ VMSTATE_BUFFER(cmos_data, RTCState),
+ VMSTATE_UINT8(cmos_index, RTCState),
+ VMSTATE_INT32(current_tm.tm_sec, RTCState),
+ VMSTATE_INT32(current_tm.tm_min, RTCState),
+ VMSTATE_INT32(current_tm.tm_hour, RTCState),
+ VMSTATE_INT32(current_tm.tm_wday, RTCState),
+ VMSTATE_INT32(current_tm.tm_mday, RTCState),
+ VMSTATE_INT32(current_tm.tm_mon, RTCState),
+ VMSTATE_INT32(current_tm.tm_year, RTCState),
+ VMSTATE_TIMER(periodic_timer, RTCState),
+ VMSTATE_INT64(next_periodic_time, RTCState),
+ VMSTATE_INT64(next_second_time, RTCState),
+ VMSTATE_TIMER(second_timer, RTCState),
+ VMSTATE_TIMER(second_timer2, RTCState),
+ VMSTATE_UINT32_V(irq_coalesced, RTCState, 2),
+ VMSTATE_UINT32_V(period, RTCState, 2),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void rtc_reset(void *opaque)
{
- RTCState *s = &rtc_state;
+ 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);
+
+ qemu_irq_lower(s->irq);
+
+#ifdef TARGET_I386
+ if (rtc_td_hack)
+ s->irq_coalesced = 0;
+#endif
+}
- cmos_update_time(s);
+static int rtc_initfn(ISADevice *dev)
+{
+ RTCState *s = DO_UPCAST(RTCState, dev, dev);
+ int base = 0x70;
- s->irq = irq;
s->cmos_data[RTC_REG_A] = 0x26;
s->cmos_data[RTC_REG_B] = 0x02;
s->cmos_data[RTC_REG_C] = 0x00;
s->cmos_data[RTC_REG_D] = 0x80;
- register_ioport_write(base, 2, cmos_ioport_write, 1);
- register_ioport_read(base, 2, cmos_ioport_read, 1);
+ rtc_set_date_from_host(dev);
+
+ s->periodic_timer = qemu_new_timer_ns(rtc_clock, rtc_periodic_timer, s);
+#ifdef TARGET_I386
+ if (rtc_td_hack)
+ s->coalesced_timer =
+ qemu_new_timer_ns(rtc_clock, rtc_coalesced_timer, s);
+#endif
+ s->second_timer = qemu_new_timer_ns(rtc_clock, rtc_update_second, s);
+ s->second_timer2 = qemu_new_timer_ns(rtc_clock, rtc_update_second2, s);
+
+ s->next_second_time =
+ qemu_get_clock_ns(rtc_clock) + (get_ticks_per_sec() * 99) / 100;
+ qemu_mod_timer(s->second_timer2, s->next_second_time);
+
+ register_ioport_write(base, 2, 1, cmos_ioport_write, s);
+ register_ioport_read(base, 2, 1, cmos_ioport_read, s);
+ isa_init_ioport_range(dev, base, 2);
+
+ qdev_set_legacy_instance_id(&dev->qdev, base, 2);
+ qemu_register_reset(rtc_reset, s);
+ return 0;
}
+ISADevice *rtc_init(int base_year, qemu_irq intercept_irq)
+{
+ ISADevice *dev;
+ RTCState *s;
+
+ dev = isa_create("mc146818rtc");
+ s = DO_UPCAST(RTCState, dev, dev);
+ qdev_prop_set_int32(&dev->qdev, "base_year", base_year);
+ qdev_init_nofail(&dev->qdev);
+ if (intercept_irq) {
+ s->irq = intercept_irq;
+ } else {
+ isa_init_irq(dev, &s->irq, RTC_ISA_IRQ);
+ }
+ return dev;
+}
+
+static ISADeviceInfo mc146818rtc_info = {
+ .qdev.name = "mc146818rtc",
+ .qdev.size = sizeof(RTCState),
+ .qdev.no_user = 1,
+ .qdev.vmsd = &vmstate_rtc,
+ .init = rtc_initfn,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_INT32("base_year", RTCState, base_year, 1980),
+ DEFINE_PROP_END_OF_LIST(),
+ }
+};
+
+static void mc146818rtc_register(void)
+{
+ isa_qdev_register(&mc146818rtc_info);
+}
+device_init(mc146818rtc_register)
projects / qemu.git / blobdiff