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authorPaolo Bonzini <pbonzini@redhat.com>2017-07-25 13:46:29 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2017-08-01 17:27:33 +0200
commitda3a392f0562c1deffd2bc1258d2893bb397009c (patch)
treed9f418530ee009a93a3429ebd60dbc6f582d82ab
parentbc706fa9039d875bb33ad7e9b27423a42455e17b (diff)
downloadqemu-arm-da3a392f0562c1deffd2bc1258d2893bb397009c.tar.gz
rtc-test: introduce more update tests
Test divider reset and UIP behavior. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--tests/rtc-test.c82
1 files changed, 81 insertions, 1 deletions
diff --git a/tests/rtc-test.c b/tests/rtc-test.c
index 798cf5e285..d7a96cbd79 100644
--- a/tests/rtc-test.c
+++ b/tests/rtc-test.c
@@ -325,6 +325,30 @@ static void set_datetime_bcd(int h, int min, int s, int d, int m, int y)
cmos_write(RTC_DAY_OF_MONTH, d);
}
+static void set_datetime_dec(int h, int min, int s, int d, int m, int y)
+{
+ cmos_write(RTC_HOURS, h);
+ cmos_write(RTC_MINUTES, min);
+ cmos_write(RTC_SECONDS, s);
+ cmos_write(RTC_YEAR, y % 100);
+ cmos_write(RTC_CENTURY, y / 100);
+ cmos_write(RTC_MONTH, m);
+ cmos_write(RTC_DAY_OF_MONTH, d);
+}
+
+static void set_datetime(int mode, int h, int min, int s, int d, int m, int y)
+{
+ cmos_write(RTC_REG_B, mode);
+
+ cmos_write(RTC_REG_A, 0x76);
+ if (mode & REG_B_DM) {
+ set_datetime_dec(h, min, s, d, m, y);
+ } else {
+ set_datetime_bcd(h, min, s, d, m, y);
+ }
+ cmos_write(RTC_REG_A, 0x26);
+}
+
#define assert_time(h, m, s) \
do { \
g_assert_cmpint(cmos_read(RTC_HOURS), ==, h); \
@@ -559,6 +583,60 @@ static void register_b_set_flag(void)
assert_datetime_bcd(0x02, 0x04, 0x59, 0x02, 0x02, 0x2011);
}
+static void divider_reset(void)
+{
+ /* Enable binary-coded decimal (BCD) mode in Register B*/
+ cmos_write(RTC_REG_B, REG_B_24H);
+
+ /* Enter divider reset */
+ cmos_write(RTC_REG_A, 0x76);
+ set_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
+
+ assert_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
+
+ /* Since divider reset flag is still enabled, these are equality checks. */
+ clock_step(1000000000LL);
+ assert_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
+
+ /* The first update ends 500 ms after divider reset */
+ cmos_write(RTC_REG_A, 0x26);
+ clock_step(500000000LL - UIP_HOLD_LENGTH - 1);
+ g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, ==, 0);
+ assert_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
+
+ clock_step(1);
+ g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, !=, 0);
+ clock_step(UIP_HOLD_LENGTH);
+ g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, ==, 0);
+
+ assert_datetime_bcd(0x02, 0x04, 0x59, 0x02, 0x02, 0x2011);
+}
+
+static void uip_stuck(void)
+{
+ set_datetime(REG_B_24H, 0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
+
+ /* The first update ends 500 ms after divider reset */
+ (void)cmos_read(RTC_REG_C);
+ clock_step(500000000LL);
+ g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, ==, 0);
+ assert_datetime_bcd(0x02, 0x04, 0x59, 0x02, 0x02, 0x2011);
+
+ /* UF is now set. */
+ cmos_write(RTC_HOURS_ALARM, 0x02);
+ cmos_write(RTC_MINUTES_ALARM, 0xC0);
+ cmos_write(RTC_SECONDS_ALARM, 0xC0);
+
+ /* Because the alarm will fire soon, reading register A will latch UIP. */
+ clock_step(1000000000LL - UIP_HOLD_LENGTH / 2);
+ g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, !=, 0);
+
+ /* Move the alarm far away. This must not cause UIP to remain stuck! */
+ cmos_write(RTC_HOURS_ALARM, 0x03);
+ clock_step(UIP_HOLD_LENGTH);
+ g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, ==, 0);
+}
+
#define RTC_PERIOD_CODE1 13 /* 8 Hz */
#define RTC_PERIOD_CODE2 15 /* 2 Hz */
@@ -625,7 +703,9 @@ int main(int argc, char **argv)
qtest_add_func("/rtc/basic/bcd-12h", basic_12h_bcd);
qtest_add_func("/rtc/set-year/20xx", set_year_20xx);
qtest_add_func("/rtc/set-year/1980", set_year_1980);
- qtest_add_func("/rtc/misc/register_b_set_flag", register_b_set_flag);
+ qtest_add_func("/rtc/update/register_b_set_flag", register_b_set_flag);
+ qtest_add_func("/rtc/update/divider-reset", divider_reset);
+ qtest_add_func("/rtc/update/uip-stuck", uip_stuck);
qtest_add_func("/rtc/misc/fuzz-registers", fuzz_registers);
qtest_add_func("/rtc/periodic/interrupt", periodic_timer);