diff mbox series

[04/25] tests: Add a simple test of the CMSDK APB watchdog

Message ID 20210121190622.22000-5-peter.maydell@linaro.org (mailing list archive)
State New, archived
Headers show
Series Convert CMSDK timer, watchdog, dualtimer to Clock framework | expand

Commit Message

Peter Maydell Jan. 21, 2021, 7:06 p.m. UTC 
Add a simple test of the CMSDK watchdog, since we're about to do some
refactoring of how it is clocked.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 tests/qtest/cmsdk-apb-watchdog-test.c | 80 +++++++++++++++++++++++++++
 MAINTAINERS                           |  1 +
 tests/qtest/meson.build               |  1 +
 3 files changed, 82 insertions(+)
 create mode 100644 tests/qtest/cmsdk-apb-watchdog-test.c

Comments

Luc Michel Jan. 24, 2021, 1:10 p.m. UTC | #1 
On 19:06 Thu 21 Jan     , Peter Maydell wrote:
> Add a simple test of the CMSDK watchdog, since we're about to do some
> refactoring of how it is clocked.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: Luc Michel <luc@lmichel.fr>

> ---
>  tests/qtest/cmsdk-apb-watchdog-test.c | 80 +++++++++++++++++++++++++++
>  MAINTAINERS                           |  1 +
>  tests/qtest/meson.build               |  1 +
>  3 files changed, 82 insertions(+)
>  create mode 100644 tests/qtest/cmsdk-apb-watchdog-test.c
> 
> diff --git a/tests/qtest/cmsdk-apb-watchdog-test.c b/tests/qtest/cmsdk-apb-watchdog-test.c
> new file mode 100644
> index 00000000000..c6add1fee85
> --- /dev/null
> +++ b/tests/qtest/cmsdk-apb-watchdog-test.c
> @@ -0,0 +1,80 @@
> +/*
> + * QTest testcase for the CMSDK APB watchdog device
> + *
> + * Copyright (c) 2021 Linaro Limited
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful, but WITHOUT
> + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
> + * for more details.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "libqtest-single.h"
> +
> +/*
> + * lm3s811evb watchdog; at board startup this runs at 200MHz / 16 == 12.5MHz,
> + * which is 80ns per tick.
> + */
> +#define WDOG_BASE 0x40000000
> +
> +#define WDOGLOAD 0
> +#define WDOGVALUE 4
> +#define WDOGCONTROL 8
> +#define WDOGINTCLR 0xc
> +#define WDOGRIS 0x10
> +#define WDOGMIS 0x14
> +#define WDOGLOCK 0xc00
> +
> +static void test_watchdog(void)
> +{
> +    g_assert_cmpuint(readl(WDOG_BASE + WDOGRIS), ==, 0);
> +
> +    writel(WDOG_BASE + WDOGCONTROL, 1);
> +    writel(WDOG_BASE + WDOGLOAD, 1000);
> +
> +    /* Step to just past the 500th tick */
> +    clock_step(500 * 80 + 1);
> +    g_assert_cmpuint(readl(WDOG_BASE + WDOGRIS), ==, 0);
> +    g_assert_cmpuint(readl(WDOG_BASE + WDOGVALUE), ==, 500);
> +
> +    /* Just past the 1000th tick: timer should have fired */
> +    clock_step(500 * 80);
> +    g_assert_cmpuint(readl(WDOG_BASE + WDOGRIS), ==, 1);
> +    g_assert_cmpuint(readl(WDOG_BASE + WDOGVALUE), ==, 0);
> +
> +    /* VALUE reloads at following tick */
> +    clock_step(80);
> +    g_assert_cmpuint(readl(WDOG_BASE + WDOGVALUE), ==, 1000);
> +
> +    /* Writing any value to WDOGINTCLR clears the interrupt and reloads */
> +    clock_step(500 * 80);
> +    g_assert_cmpuint(readl(WDOG_BASE + WDOGVALUE), ==, 500);
> +    g_assert_cmpuint(readl(WDOG_BASE + WDOGRIS), ==, 1);
> +    writel(WDOG_BASE + WDOGINTCLR, 0);
> +    g_assert_cmpuint(readl(WDOG_BASE + WDOGVALUE), ==, 1000);
> +    g_assert_cmpuint(readl(WDOG_BASE + WDOGRIS), ==, 0);
> +}
> +
> +int main(int argc, char **argv)
> +{
> +    QTestState *s;
> +    int r;
> +
> +    g_test_init(&argc, &argv, NULL);
> +
> +    s = qtest_start("-machine lm3s811evb");
> +
> +    qtest_add_func("/cmsdk-apb-watchdog/watchdog", test_watchdog);
> +
> +    r = g_test_run();
> +
> +    qtest_end();
> +
> +    return r;
> +}
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 010405b0884..58956497888 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -588,6 +588,7 @@ F: hw/char/cmsdk-apb-uart.c
>  F: include/hw/char/cmsdk-apb-uart.h
>  F: hw/watchdog/cmsdk-apb-watchdog.c
>  F: include/hw/watchdog/cmsdk-apb-watchdog.h
> +F: tests/qtest/cmsdk-apb-watchdog-test.c
>  F: hw/misc/tz-ppc.c
>  F: include/hw/misc/tz-ppc.h
>  F: hw/misc/tz-mpc.c
> diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
> index 74addd74868..9e2ebc47041 100644
> --- a/tests/qtest/meson.build
> +++ b/tests/qtest/meson.build
> @@ -142,6 +142,7 @@ qtests_npcm7xx = \
>     'npcm7xx_watchdog_timer-test']
>  qtests_arm = \
>    (config_all_devices.has_key('CONFIG_CMSDK_APB_TIMER') ? ['cmsdk-apb-timer-test'] : []) + \
> +  (config_all_devices.has_key('CONFIG_CMSDK_APB_WATCHDOG') ? ['cmsdk-apb-watchdog-test'] : []) + \
>    (config_all_devices.has_key('CONFIG_PFLASH_CFI02') ? ['pflash-cfi02-test'] : []) +         \
>    (config_all_devices.has_key('CONFIG_NPCM7XX') ? qtests_npcm7xx : []) + \
>    ['arm-cpu-features',
> -- 
> 2.20.1
> 

--
Philippe Mathieu-Daudé Jan. 27, 2021, 9:54 p.m. UTC | #2 
On 1/21/21 8:06 PM, Peter Maydell wrote:
> Add a simple test of the CMSDK watchdog, since we're about to do some
> refactoring of how it is clocked.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  tests/qtest/cmsdk-apb-watchdog-test.c | 80 +++++++++++++++++++++++++++
>  MAINTAINERS                           |  1 +
>  tests/qtest/meson.build               |  1 +
>  3 files changed, 82 insertions(+)
>  create mode 100644 tests/qtest/cmsdk-apb-watchdog-test.c

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
diff mbox series

Patch

diff --git a/tests/qtest/cmsdk-apb-watchdog-test.c b/tests/qtest/cmsdk-apb-watchdog-test.c
new file mode 100644
index 00000000000..c6add1fee85
--- /dev/null
+++ b/tests/qtest/cmsdk-apb-watchdog-test.c
@@ -0,0 +1,80 @@ 
+/*
+ * QTest testcase for the CMSDK APB watchdog device
+ *
+ * Copyright (c) 2021 Linaro Limited
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+#include "qemu/osdep.h"
+#include "libqtest-single.h"
+
+/*
+ * lm3s811evb watchdog; at board startup this runs at 200MHz / 16 == 12.5MHz,
+ * which is 80ns per tick.
+ */
+#define WDOG_BASE 0x40000000
+
+#define WDOGLOAD 0
+#define WDOGVALUE 4
+#define WDOGCONTROL 8
+#define WDOGINTCLR 0xc
+#define WDOGRIS 0x10
+#define WDOGMIS 0x14
+#define WDOGLOCK 0xc00
+
+static void test_watchdog(void)
+{
+    g_assert_cmpuint(readl(WDOG_BASE + WDOGRIS), ==, 0);
+
+    writel(WDOG_BASE + WDOGCONTROL, 1);
+    writel(WDOG_BASE + WDOGLOAD, 1000);
+
+    /* Step to just past the 500th tick */
+    clock_step(500 * 80 + 1);
+    g_assert_cmpuint(readl(WDOG_BASE + WDOGRIS), ==, 0);
+    g_assert_cmpuint(readl(WDOG_BASE + WDOGVALUE), ==, 500);
+
+    /* Just past the 1000th tick: timer should have fired */
+    clock_step(500 * 80);
+    g_assert_cmpuint(readl(WDOG_BASE + WDOGRIS), ==, 1);
+    g_assert_cmpuint(readl(WDOG_BASE + WDOGVALUE), ==, 0);
+
+    /* VALUE reloads at following tick */
+    clock_step(80);
+    g_assert_cmpuint(readl(WDOG_BASE + WDOGVALUE), ==, 1000);
+
+    /* Writing any value to WDOGINTCLR clears the interrupt and reloads */
+    clock_step(500 * 80);
+    g_assert_cmpuint(readl(WDOG_BASE + WDOGVALUE), ==, 500);
+    g_assert_cmpuint(readl(WDOG_BASE + WDOGRIS), ==, 1);
+    writel(WDOG_BASE + WDOGINTCLR, 0);
+    g_assert_cmpuint(readl(WDOG_BASE + WDOGVALUE), ==, 1000);
+    g_assert_cmpuint(readl(WDOG_BASE + WDOGRIS), ==, 0);
+}
+
+int main(int argc, char **argv)
+{
+    QTestState *s;
+    int r;
+
+    g_test_init(&argc, &argv, NULL);
+
+    s = qtest_start("-machine lm3s811evb");
+
+    qtest_add_func("/cmsdk-apb-watchdog/watchdog", test_watchdog);
+
+    r = g_test_run();
+
+    qtest_end();
+
+    return r;
+}
diff --git a/MAINTAINERS b/MAINTAINERS
index 010405b0884..58956497888 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -588,6 +588,7 @@  F: hw/char/cmsdk-apb-uart.c
 F: include/hw/char/cmsdk-apb-uart.h
 F: hw/watchdog/cmsdk-apb-watchdog.c
 F: include/hw/watchdog/cmsdk-apb-watchdog.h
+F: tests/qtest/cmsdk-apb-watchdog-test.c
 F: hw/misc/tz-ppc.c
 F: include/hw/misc/tz-ppc.h
 F: hw/misc/tz-mpc.c
diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
index 74addd74868..9e2ebc47041 100644
--- a/tests/qtest/meson.build
+++ b/tests/qtest/meson.build
@@ -142,6 +142,7 @@  qtests_npcm7xx = \
    'npcm7xx_watchdog_timer-test']
 qtests_arm = \
   (config_all_devices.has_key('CONFIG_CMSDK_APB_TIMER') ? ['cmsdk-apb-timer-test'] : []) + \
+  (config_all_devices.has_key('CONFIG_CMSDK_APB_WATCHDOG') ? ['cmsdk-apb-watchdog-test'] : []) + \
   (config_all_devices.has_key('CONFIG_PFLASH_CFI02') ? ['pflash-cfi02-test'] : []) +         \
   (config_all_devices.has_key('CONFIG_NPCM7XX') ? qtests_npcm7xx : []) + \
   ['arm-cpu-features',