From nobody Tue Feb 10 09:58:54 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1542059485193582.2798604957727; Mon, 12 Nov 2018 13:51:25 -0800 (PST) Received: from localhost ([::1]:50818 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gMK7A-0007ju-29 for importer@patchew.org; Mon, 12 Nov 2018 16:51:24 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53009) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gMJz6-0006kp-Qm for qemu-devel@nongnu.org; Mon, 12 Nov 2018 16:43:05 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gMJz3-0002lO-Hk for qemu-devel@nongnu.org; Mon, 12 Nov 2018 16:43:04 -0500 Received: from steffen-goertz.de ([88.198.119.201]:35646) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gMJz3-0002fF-6A for qemu-devel@nongnu.org; Mon, 12 Nov 2018 16:43:01 -0500 Received: from gouranga.nyu.edu (unknown [192.76.177.125]) by steffen-goertz.de (Postfix) with ESMTPSA id 9774350730; Mon, 12 Nov 2018 22:39:44 +0100 (CET) From: =?UTF-8?q?Steffen=20G=C3=B6rtz?= To: qemu-devel@nongnu.org Date: Mon, 12 Nov 2018 16:42:23 -0500 Message-Id: <20181112214224.31560-14-contrib@steffen-goertz.de> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181112214224.31560-1-contrib@steffen-goertz.de> References: <20181112214224.31560-1-contrib@steffen-goertz.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 88.198.119.201 Subject: [Qemu-devel] [PATCH v5 13/14] tests/microbit-test: Add Tests for nRF51 Timer X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Peter Maydell , Thomas Huth , Stefan Hajnoczi , =?UTF-8?q?Steffen=20G=C3=B6rtz?= , Jim Mussared , Joel Stanley , Paolo Bonzini , Julia Suvorova Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Basic tests for nRF51 Timer Peripheral. Signed-off-by: Steffen G=C3=B6rtz Reviewed-by: Stefan Hajnoczi --- tests/microbit-test.c | 101 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 101 insertions(+) diff --git a/tests/microbit-test.c b/tests/microbit-test.c index e606221b58..f8731e7c00 100644 --- a/tests/microbit-test.c +++ b/tests/microbit-test.c @@ -21,6 +21,7 @@ #include "hw/arm/nrf51.h" #include "hw/nvram/nrf51_nvm.h" #include "hw/gpio/nrf51_gpio.h" +#include "hw/timer/nrf51_timer.h" =20 #define FLASH_SIZE (256 * NRF51_PAGE_SIZE) =20 @@ -239,6 +240,105 @@ 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) +{ + int64_t prev_deadline, curr_deadline; + uint32_t steps_to_overflow =3D 405; + + /* 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, 483); + + timer_assert_events(0, 0, 0, 0); + + timer_task(NRF51_TIMER_TASK_START); + prev_deadline =3D clock_step_next(); + timer_assert_events(1, 0, 0, 0); + + /* Swept over on first overflow */ + timer_set_cc(3, 114); + + curr_deadline =3D clock_step_next(); + g_assert_cmpint(curr_deadline - prev_deadline, =3D=3D, 10000); + prev_deadline =3D curr_deadline; + timer_assert_events(1, 1, 0, 0); + + curr_deadline =3D clock_step_next(); + g_assert_cmpint(curr_deadline - prev_deadline, =3D=3D, 10000); + prev_deadline =3D curr_deadline; + 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_next(); + } + + 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; @@ -249,6 +349,7 @@ int main(int argc, char **argv) =20 qtest_add_func("/microbit/nrf51/nvmc", test_nrf51_nvmc); 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 2.19.1