+
GENERATED_HEADERS += tests/test-qapi-types.h tests/test-qapi-visit.h
tests/test-qmp-commands.h
test-obj-y = tests/check-qint.o tests/check-qstring.o tests/check-qdict.o \
diff --git a/tests/rtc-test.c b/tests/rtc-test.c
new file mode 100644
index 0000000..22f807c
--- /dev/null
+++ b/tests/rtc-test.c
@@ -0,0 +1,263 @@
+/*
+ * QTest testcase for the MC146818 real-time clock
+ *
+ * Copyright IBM, Corp. 2012
+ *
+ * Authors:
+ * Anthony Liguori<aligu...@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+#include "libqtest.h"
+#include "hw/mc146818rtc_regs.h"
+
+#include<glib.h>
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+#include<unistd.h>
+
+static uint8_t base = 0x70;
+
+static int bcd2dec(int value)
+{
+ return (((value>> 4)& 0x0F) * 10) + (value& 0x0F);
+}
+
+static int dec2bcd(int value)
+{
+ return ((value / 10)<< 4) | (value % 10);
+}
+
+static uint8_t cmos_read(uint8_t reg)
+{
+ outb(base + 0, reg);
+ return inb(base + 1);
+}
+
+static void cmos_write(uint8_t reg, uint8_t val)
+{
+ outb(base + 0, reg);
+ outb(base + 1, val);
+}
+
+static int tm_cmp(struct tm *lhs, struct tm *rhs)
+{
+ time_t a, b;
+ struct tm d1, d2;
+
+ memcpy(&d1, lhs, sizeof(d1));
+ memcpy(&d2, rhs, sizeof(d2));
+
+ a = mktime(&d1);
+ b = mktime(&d2);
+
+ if (a< b) {
+ return -1;
+ } else if (a> b) {
+ return 1;
+ }
+
+ return 0;
+}
+
+#if 0
+static void print_tm(struct tm *tm)
+{
+ printf("%04d-%02d-%02d %02d:%02d:%02d\n",
+ tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_gmtoff);
+}
+#endif
+
+static void cmos_get_date_time(struct tm *date)
+{
+ int base_year = 2000, hour_offset;
+ int sec, min, hour, mday, mon, year;
+ time_t ts;
+ struct tm dummy;
+
+ sec = cmos_read(RTC_SECONDS);
+ min = cmos_read(RTC_MINUTES);
+ hour = cmos_read(RTC_HOURS);
+ mday = cmos_read(RTC_DAY_OF_MONTH);
+ mon = cmos_read(RTC_MONTH);
+ year = cmos_read(RTC_YEAR);
+
+ if ((cmos_read(RTC_REG_B)& REG_B_DM) == 0) {
+ sec = bcd2dec(sec);
+ min = bcd2dec(min);
+ hour = bcd2dec(hour);
+ mday = bcd2dec(mday);
+ mon = bcd2dec(mon);
+ year = bcd2dec(year);
+ hour_offset = 80;
+ } else {
+ hour_offset = 0x80;
+ }
+
+ if ((cmos_read(0x0B)& REG_B_24H) == 0) {
+ if (hour>= hour_offset) {
+ hour -= hour_offset;
+ hour += 12;
+ }
+ }
+
+ ts = time(NULL);
+ localtime_r(&ts,&dummy);
+
+ date->tm_isdst = dummy.tm_isdst;
+ date->tm_sec = sec;
+ date->tm_min = min;
+ date->tm_hour = hour;
+ date->tm_mday = mday;
+ date->tm_mon = mon - 1;
+ date->tm_year = base_year + year - 1900;
+ date->tm_gmtoff = 0;
+
+ ts = mktime(date);
+}
+
+static void check_time(int wiggle)
+{
+ struct tm start, date[4], end;
+ struct tm *datep;
+ time_t ts;
+
+ /*
+ * This check assumes a few things. First, we cannot guarantee that we get
+ * a consistent reading from the wall clock because we may hit an edge of
+ * the clock while reading. To work around this, we read four clock
readings
+ * such that at least two of them should match. We need to assume that one
+ * reading is corrupt so we need four readings to ensure that we have at
+ * least two consecutive identical readings
+ *
+ * It's also possible that we'll cross an edge reading the host clock so
+ * simply check to make sure that the clock reading is within the period of
+ * when we expect it to be.
+ */
+
+ ts = time(NULL);
+ gmtime_r(&ts,&start);
+
+ cmos_get_date_time(&date[0]);
+ cmos_get_date_time(&date[1]);
+ cmos_get_date_time(&date[2]);
+ cmos_get_date_time(&date[3]);
+
+ ts = time(NULL);
+ gmtime_r(&ts,&end);
+
+ if (tm_cmp(&date[0],&date[1]) == 0) {
+ datep =&date[0];
+ } else if (tm_cmp(&date[1],&date[2]) == 0) {
+ datep =&date[1];
+ } else if (tm_cmp(&date[2],&date[3]) == 0) {
+ datep =&date[2];
+ } else {
+ g_assert_not_reached();
+ }
+
+ if (!(tm_cmp(&start, datep)<= 0&& tm_cmp(datep,&end)<= 0)) {
+ time_t t, s;
+
+ start.tm_isdst = datep->tm_isdst;
+
+ t = mktime(datep);
+ s = mktime(&start);
+ if (t< s) {
+ g_test_message("RTC is %ld second(s) behind wall-clock\n", (s -
t));
+ } else {
+ g_test_message("RTC is %ld second(s) ahead of wall-clock\n", (t -
s));
+ }
+
+ g_assert_cmpint(ABS(t - s),<=, wiggle);
+ }
+}
+
+static int wiggle = 2;
+
+static void bcd_check_time(void)
+{
+ /* Set BCD mode */
+ cmos_write(RTC_REG_B, cmos_read(RTC_REG_B)& ~REG_B_DM);
+ check_time(wiggle);
+}
+
+static void dec_check_time(void)
+{
+ /* Set DEC mode */
+ cmos_write(RTC_REG_B, cmos_read(RTC_REG_B) | REG_B_DM);
+ check_time(wiggle);
+}
+
+static void set_alarm_time(struct tm *tm)
+{
+ int sec;
+
+ sec = tm->tm_sec;
+
+ if ((cmos_read(RTC_REG_B)& REG_B_DM) == 0) {
+ sec = dec2bcd(sec);
+ }
+
+ cmos_write(RTC_SECONDS_ALARM, sec);
+ cmos_write(RTC_MINUTES_ALARM, RTC_ALARM_DONT_CARE);
+ cmos_write(RTC_HOURS_ALARM, RTC_ALARM_DONT_CARE);
+}
+
+static void alarm_time(void)
+{
+ struct tm now;
+ time_t ts;
+ int i;
+
+ ts = time(NULL);
+ gmtime_r(&ts,&now);
+
+ /* set DEC mode */
+ cmos_write(RTC_REG_B, cmos_read(RTC_REG_B) | REG_B_DM);
+
+ g_assert(!get_irq(RTC_ISA_IRQ));
+ cmos_read(RTC_REG_C);
+
+ now.tm_sec = (now.tm_sec + 2) % 60;
+ set_alarm_time(&now);
+ cmos_write(RTC_REG_B, cmos_read(RTC_REG_B) | REG_B_AIE);
+
+ for (i = 0; i< 2 + wiggle; i++) {
+ if (get_irq(RTC_ISA_IRQ)) {
+ break;
+ }
+
+ clock_step(1000000000);
+ }
+
+ g_assert(get_irq(RTC_ISA_IRQ));
+ g_assert((cmos_read(RTC_REG_C)& REG_C_AF) != 0);
+ g_assert(cmos_read(RTC_REG_C) == 0);
+}
+
+int main(int argc, char **argv)
+{
+ QTestState *s = NULL;
+ int ret;
+
+ g_test_init(&argc,&argv, NULL);
+
+ s = qtest_start("-display none -rtc clock=vm");
+ qtest_irq_intercept_in(s, "ioapic");
+
+ qtest_add_func("/rtc/bcd/check-time", bcd_check_time);
+ qtest_add_func("/rtc/dec/check-time", dec_check_time);
+ qtest_add_func("/rtc/alarm-time", alarm_time);
+ ret = g_test_run();
+
+ if (s) {
+ qtest_quit(s);
+ }
+
+ return ret;
+}
--
1.7.9.1
