diff options
| -rw-r--r-- | tests/qtest/sse-timer-test.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tests/qtest/sse-timer-test.c b/tests/qtest/sse-timer-test.c index f4f6704b30..a65d7542d5 100644 --- a/tests/qtest/sse-timer-test.c +++ b/tests/qtest/sse-timer-test.c @@ -189,6 +189,37 @@ static void test_timer(void) g_assert_cmpuint(readl(TIMER_BASE + CNTP_AIVAL_HI), ==, 0x42); } +static void test_timer_scale_change(void) +{ + /* + * Test that the timer responds correctly to counter + * scaling changes while it has an active timer. + */ + reset_counter_and_timer(); + /* Give ourselves access to the timer, and enable the counter and timer */ + writel(PERIPHNSPPC0, 1); + writel(COUNTER_BASE + CNTCR, 1); + writel(TIMER_BASE + CNTP_CTL, 1); + /* Set the CompareValue to 4000 ticks */ + writel(TIMER_BASE + CNTP_CVAL_LO, 4000); + writel(TIMER_BASE + CNTP_CVAL_HI, 0); + /* Advance halfway and check ISTATUS is not set */ + clock_step_ticks(2000); + g_assert_cmpuint(readl(TIMER_BASE + CNTP_CTL), ==, 1); + /* Reprogram the counter to run at 1/16th speed */ + writel(COUNTER_BASE + CNTCR, 0); + writel(COUNTER_BASE + CNTSCR, 0x00100000); /* 1/16th normal speed */ + writel(COUNTER_BASE + CNTCR, 5); /* EN, SCEN */ + /* Advance to where the timer would have fired and check it has not */ + clock_step_ticks(2000); + g_assert_cmpuint(readl(TIMER_BASE + CNTP_CTL), ==, 1); + /* Advance to where the timer must fire at the new clock rate */ + clock_step_ticks(29996); + g_assert_cmpuint(readl(TIMER_BASE + CNTP_CTL), ==, 1); + clock_step_ticks(4); + g_assert_cmpuint(readl(TIMER_BASE + CNTP_CTL), ==, 5); +} + int main(int argc, char **argv) { int r; @@ -199,6 +230,7 @@ int main(int argc, char **argv) qtest_add_func("/sse-timer/counter", test_counter); qtest_add_func("/sse-timer/timer", test_timer); + qtest_add_func("/sse-timer/timer-scale-change", test_timer_scale_change); r = g_test_run(); |