jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
rtc-test: introduce more update tests
Test divider reset and UIP behavior.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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+81
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tests/rtc-test.c
+81
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tests/rtc-test.c
···
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cmos_write(RTC_DAY_OF_MONTH, d);
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}
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static void set_datetime_dec(int h, int min, int s, int d, int m, int y)
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{
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cmos_write(RTC_HOURS, h);
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cmos_write(RTC_MINUTES, min);
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cmos_write(RTC_SECONDS, s);
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cmos_write(RTC_YEAR, y % 100);
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cmos_write(RTC_CENTURY, y / 100);
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cmos_write(RTC_MONTH, m);
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cmos_write(RTC_DAY_OF_MONTH, d);
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}
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static void set_datetime(int mode, int h, int min, int s, int d, int m, int y)
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{
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cmos_write(RTC_REG_B, mode);
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cmos_write(RTC_REG_A, 0x76);
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if (mode & REG_B_DM) {
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set_datetime_dec(h, min, s, d, m, y);
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} else {
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set_datetime_bcd(h, min, s, d, m, y);
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}
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cmos_write(RTC_REG_A, 0x26);
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}
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#define assert_time(h, m, s) \
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do { \
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g_assert_cmpint(cmos_read(RTC_HOURS), ==, h); \
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assert_datetime_bcd(0x02, 0x04, 0x59, 0x02, 0x02, 0x2011);
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}
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static void divider_reset(void)
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{
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/* Enable binary-coded decimal (BCD) mode in Register B*/
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cmos_write(RTC_REG_B, REG_B_24H);
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/* Enter divider reset */
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cmos_write(RTC_REG_A, 0x76);
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set_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
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assert_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
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/* Since divider reset flag is still enabled, these are equality checks. */
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clock_step(1000000000LL);
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assert_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
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/* The first update ends 500 ms after divider reset */
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cmos_write(RTC_REG_A, 0x26);
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clock_step(500000000LL - UIP_HOLD_LENGTH - 1);
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g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, ==, 0);
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assert_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
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clock_step(1);
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g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, !=, 0);
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clock_step(UIP_HOLD_LENGTH);
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g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, ==, 0);
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assert_datetime_bcd(0x02, 0x04, 0x59, 0x02, 0x02, 0x2011);
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}
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static void uip_stuck(void)
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{
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set_datetime(REG_B_24H, 0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
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/* The first update ends 500 ms after divider reset */
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(void)cmos_read(RTC_REG_C);
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clock_step(500000000LL);
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g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, ==, 0);
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assert_datetime_bcd(0x02, 0x04, 0x59, 0x02, 0x02, 0x2011);
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/* UF is now set. */
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cmos_write(RTC_HOURS_ALARM, 0x02);
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cmos_write(RTC_MINUTES_ALARM, 0xC0);
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cmos_write(RTC_SECONDS_ALARM, 0xC0);
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/* Because the alarm will fire soon, reading register A will latch UIP. */
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clock_step(1000000000LL - UIP_HOLD_LENGTH / 2);
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g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, !=, 0);
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/* Move the alarm far away. This must not cause UIP to remain stuck! */
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cmos_write(RTC_HOURS_ALARM, 0x03);
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clock_step(UIP_HOLD_LENGTH);
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g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, ==, 0);
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}
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#define RTC_PERIOD_CODE1 13 /* 8 Hz */
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#define RTC_PERIOD_CODE2 15 /* 2 Hz */
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···
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qtest_add_func("/rtc/basic/bcd-12h", basic_12h_bcd);
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qtest_add_func("/rtc/set-year/20xx", set_year_20xx);
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qtest_add_func("/rtc/set-year/1980", set_year_1980);
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-
qtest_add_func("/rtc/misc/register_b_set_flag", register_b_set_flag);
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qtest_add_func("/rtc/update/register_b_set_flag", register_b_set_flag);
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qtest_add_func("/rtc/update/divider-reset", divider_reset);
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qtest_add_func("/rtc/update/uip-stuck", uip_stuck);
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qtest_add_func("/rtc/misc/fuzz-registers", fuzz_registers);
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qtest_add_func("/rtc/periodic/interrupt", periodic_timer);
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