From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:52039) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gez41-0003uX-TD for qemu-devel@nongnu.org; Thu, 03 Jan 2019 04:13:19 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gez40-0006oM-1l for qemu-devel@nongnu.org; Thu, 03 Jan 2019 04:13:17 -0500 From: Stefan Hajnoczi Date: Thu, 3 Jan 2019 09:11:18 +0000 Message-Id: <20190103091119.9367-11-stefanha@redhat.com> In-Reply-To: <20190103091119.9367-1-stefanha@redhat.com> References: <20190103091119.9367-1-stefanha@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH 10/11] tests/microbit-test: Add Tests for nRF51 Timer List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Thomas Huth , qemu-arm@nongnu.org, Joel Stanley , Julia Suvorova , Paolo Bonzini , Jim Mussared , =?UTF-8?q?Steffen=20G=C3=B6rtz?= , Peter Maydell , Laurent Vivier , Stefan Hajnoczi From: Steffen G=C3=B6rtz Basic tests for nRF51 Timer Peripheral. Signed-off-by: Steffen G=C3=B6rtz Reviewed-by: Stefan Hajnoczi Signed-off-by: Stefan Hajnoczi --- tests/microbit-test.c | 95 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) diff --git a/tests/microbit-test.c b/tests/microbit-test.c index 535714797a..16dffb1396 100644 --- a/tests/microbit-test.c +++ b/tests/microbit-test.c @@ -20,6 +20,7 @@ =20 #include "hw/arm/nrf51.h" #include "hw/gpio/nrf51_gpio.h" +#include "hw/timer/nrf51_timer.h" =20 static void test_nrf51_gpio(void) { @@ -143,6 +144,99 @@ static void test_nrf51_gpio(void) qtest_set_irq_in(global_qtest, "/machine/nrf51", "unnamed-gpio-in", = 0, 0); } =20 +static void timer_task(hwaddr task) +{ + writel(NRF51_TIMER_BASE + task, NRF51_TRIGGER_TASK); +} + +static void timer_clear_event(hwaddr event) +{ + writel(NRF51_TIMER_BASE + event, NRF51_EVENT_CLEAR); +} + +static void timer_set_bitmode(uint8_t mode) +{ + writel(NRF51_TIMER_BASE + NRF51_TIMER_REG_BITMODE, mode); +} + +static void timer_set_prescaler(uint8_t prescaler) +{ + writel(NRF51_TIMER_BASE + NRF51_TIMER_REG_PRESCALER, prescaler); +} + +static void timer_set_cc(size_t idx, uint32_t value) +{ + writel(NRF51_TIMER_BASE + NRF51_TIMER_REG_CC0 + idx * 4, value); +} + +static void timer_assert_events(uint32_t ev0, uint32_t ev1, uint32_t ev2= , + uint32_t ev3) +{ + g_assert(readl(NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_0) =3D=3D= ev0); + g_assert(readl(NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_1) =3D=3D= ev1); + g_assert(readl(NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_2) =3D=3D= ev2); + g_assert(readl(NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_3) =3D=3D= ev3); +} + +static void test_nrf51_timer(void) +{ + uint32_t steps_to_overflow =3D 408; + + /* Compare Match */ + timer_task(NRF51_TIMER_TASK_STOP); + timer_task(NRF51_TIMER_TASK_CLEAR); + + timer_clear_event(NRF51_TIMER_EVENT_COMPARE_0); + timer_clear_event(NRF51_TIMER_EVENT_COMPARE_1); + timer_clear_event(NRF51_TIMER_EVENT_COMPARE_2); + timer_clear_event(NRF51_TIMER_EVENT_COMPARE_3); + + timer_set_bitmode(NRF51_TIMER_WIDTH_16); /* 16 MHz Timer */ + timer_set_prescaler(0); + /* Swept over in first step */ + timer_set_cc(0, 2); + /* Barely miss on first step */ + timer_set_cc(1, 162); + /* Spot on on third step */ + timer_set_cc(2, 480); + + timer_assert_events(0, 0, 0, 0); + + timer_task(NRF51_TIMER_TASK_START); + clock_step(10000); + timer_assert_events(1, 0, 0, 0); + + /* Swept over on first overflow */ + timer_set_cc(3, 114); + + clock_step(10000); + timer_assert_events(1, 1, 0, 0); + + clock_step(10000); + timer_assert_events(1, 1, 1, 0); + + /* Wrap time until internal counter overflows */ + while (steps_to_overflow--) { + timer_assert_events(1, 1, 1, 0); + clock_step(10000); + } + + timer_assert_events(1, 1, 1, 1); + + timer_clear_event(NRF51_TIMER_EVENT_COMPARE_0); + timer_clear_event(NRF51_TIMER_EVENT_COMPARE_1); + timer_clear_event(NRF51_TIMER_EVENT_COMPARE_2); + timer_clear_event(NRF51_TIMER_EVENT_COMPARE_3); + timer_assert_events(0, 0, 0, 0); + + timer_task(NRF51_TIMER_TASK_STOP); + + /* Test Proposal: Stop/Shutdown */ + /* Test Proposal: Shortcut Compare -> Clear */ + /* Test Proposal: Shortcut Compare -> Stop */ + /* Test Proposal: Counter Mode */ +} + int main(int argc, char **argv) { int ret; @@ -152,6 +246,7 @@ int main(int argc, char **argv) global_qtest =3D qtest_initf("-machine microbit"); =20 qtest_add_func("/microbit/nrf51/gpio", test_nrf51_gpio); + qtest_add_func("/microbit/nrf51/timer", test_nrf51_timer); =20 ret =3D g_test_run(); =20 --=20 2.19.2