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[Qemu-devel] [PATCH 2/5] tests: more thorough test of ds1338
From: |
Michael Davidsaver |
Subject: |
[Qemu-devel] [PATCH 2/5] tests: more thorough test of ds1338 |
Date: |
Sun, 18 Feb 2018 20:03:39 -0800 |
Test current time and set+get round trip.
The set+get test is repeated 4 times. These cases are
spread across a single day in an attempt to trigger some potential
issues regardless of the timezone of the machine running the tests.
Signed-off-by: Michael Davidsaver <address@hidden>
---
tests/Makefile.include | 2 +
tests/ds-rtc-i2c-test.c | 193 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 195 insertions(+)
create mode 100644 tests/ds-rtc-i2c-test.c
diff --git a/tests/Makefile.include b/tests/Makefile.include
index a1bcbffe12..f5dcd274e0 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -360,6 +360,7 @@ check-qtest-sparc64-y += tests/boot-serial-test$(EXESUF)
check-qtest-arm-y = tests/tmp105-test$(EXESUF)
check-qtest-arm-y += tests/ds1338-test$(EXESUF)
+check-qtest-arm-y += tests/ds-rtc-i2c-test$(EXESUF)
check-qtest-arm-y += tests/m25p80-test$(EXESUF)
gcov-files-arm-y += hw/misc/tmp105.c
check-qtest-arm-y += tests/virtio-blk-test$(EXESUF)
@@ -764,6 +765,7 @@ tests/bios-tables-test$(EXESUF): tests/bios-tables-test.o \
tests/pxe-test$(EXESUF): tests/pxe-test.o tests/boot-sector.o $(libqos-obj-y)
tests/tmp105-test$(EXESUF): tests/tmp105-test.o $(libqos-omap-obj-y)
tests/ds1338-test$(EXESUF): tests/ds1338-test.o $(libqos-imx-obj-y)
+tests/ds-rtc-i2c-test$(EXESUF): tests/ds-rtc-i2c-test.o $(libqos-imx-obj-y)
tests/m25p80-test$(EXESUF): tests/m25p80-test.o
tests/i440fx-test$(EXESUF): tests/i440fx-test.o $(libqos-pc-obj-y)
tests/q35-test$(EXESUF): tests/q35-test.o $(libqos-pc-obj-y)
diff --git a/tests/ds-rtc-i2c-test.c b/tests/ds-rtc-i2c-test.c
new file mode 100644
index 0000000000..464eb08558
--- /dev/null
+++ b/tests/ds-rtc-i2c-test.c
@@ -0,0 +1,193 @@
+/* Testing of Dallas/Maxim I2C bus RTC devices
+ *
+ * Copyright (c) 2017 Michael Davidsaver
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the LICENSE file in the top-level directory.
+ */
+#include <stdio.h>
+
+#include "qemu/osdep.h"
+#include "qemu/bcd.h"
+#include "qemu/cutils.h"
+#include "qemu/timer.h"
+#include "libqtest.h"
+#include "libqos/libqos.h"
+#include "libqos/i2c.h"
+
+#define IMX25_I2C_0_BASE 0x43F80000
+#define DS1338_ADDR 0x68
+
+static I2CAdapter *i2c;
+static uint8_t addr;
+static bool use_century;
+
+static
+time_t rtc_gettime(void)
+{
+ struct tm parts;
+ uint8_t buf[7];
+
+ buf[0] = 0;
+ i2c_send(i2c, addr, buf, 1);
+ i2c_recv(i2c, addr, buf, 7);
+
+ parts.tm_sec = from_bcd(buf[0]);
+ parts.tm_min = from_bcd(buf[1]);
+ if (buf[2] & 0x40) {
+ /* 12 hour */
+ /* HOUR register is 1-12. */
+ parts.tm_hour = from_bcd(buf[2] & 0x1f);
+ g_assert_cmpuint(parts.tm_hour, >=, 1);
+ g_assert_cmpuint(parts.tm_hour, <=, 12);
+ parts.tm_hour %= 12u; /* wrap 12 -> 0 */
+ if (buf[2] & 0x20) {
+ parts.tm_hour += 12u;
+ }
+ } else {
+ /* 24 hour */
+ parts.tm_hour = from_bcd(buf[2] & 0x3f);
+ }
+ parts.tm_wday = from_bcd(buf[3]);
+ parts.tm_mday = from_bcd(buf[4]);
+ parts.tm_mon = from_bcd((buf[5] & 0x1f) - 1u);
+ parts.tm_year = from_bcd(buf[6]);
+ if (!use_century || (buf[5] & 0x80)) {
+ parts.tm_year += 100u;
+ }
+
+ return mktimegm(&parts);
+}
+
+/* read back and compare with current system time */
+static
+void test_rtc_current(void)
+{
+ uint8_t buf;
+ time_t expected, actual;
+
+ /* magic address to zero RTC time offset
+ * as tests may be run in any order
+ */
+ buf = 0xff;
+ i2c_send(i2c, addr, &buf, 1);
+
+ actual = time(NULL);
+ /* new second may start here */
+ expected = rtc_gettime();
+ g_assert_cmpuint(expected, <=, actual + 1);
+ g_assert_cmpuint(expected, >=, actual);
+}
+
+
+static uint8_t test_time_24_12am[8] = {
+ 0, /* address */
+ /* Wed, 22 Nov 2017 00:30:53 +0000 */
+ 0x53,
+ 0x30,
+ 0x00, /* 12 AM in 24 hour mode */
+ 0x03, /* monday is our day 1 */
+ 0x22,
+ 0x11 | 0x80,
+ 0x17,
+};
+
+static uint8_t test_time_24_6am[8] = {
+ 0, /* address */
+ /* Wed, 22 Nov 2017 06:30:53 +0000 */
+ 0x53,
+ 0x30,
+ 0x06, /* 6 AM in 24 hour mode */
+ 0x03, /* monday is our day 1 */
+ 0x22,
+ 0x11 | 0x80,
+ 0x17,
+};
+
+static uint8_t test_time_24_12pm[8] = {
+ 0, /* address */
+ /* Wed, 22 Nov 2017 12:30:53 +0000 */
+ 0x53,
+ 0x30,
+ 0x12, /* 12 PM in 24 hour mode */
+ 0x03, /* monday is our day 1 */
+ 0x22,
+ 0x11 | 0x80,
+ 0x17,
+};
+
+static uint8_t test_time_24_6pm[8] = {
+ 0, /* address */
+ /* Wed, 22 Nov 2017 18:30:53 +0000 */
+ 0x53,
+ 0x30,
+ 0x18, /* 6 PM in 24 hour mode */
+ 0x03, /* monday is our day 1 */
+ 0x22,
+ 0x11 | 0x80,
+ 0x17,
+};
+
+/* write in and read back known time */
+static
+void test_rtc_set(const void *raw)
+{
+ const uint8_t *testtime = raw;
+ uint8_t buf[7];
+ unsigned retry = 2;
+
+ for (; retry; retry--) {
+ i2c_send(i2c, addr, testtime, 8);
+ /* new second may start here */
+ i2c_send(i2c, addr, testtime, 1);
+ i2c_recv(i2c, addr, buf, 7);
+
+ if (testtime[1] == buf[0]) {
+ break;
+ }
+ /* we raced start of second, retry */
+ };
+
+ g_assert_cmpuint(testtime[1], ==, buf[0]); /* SEC */
+ g_assert_cmpuint(testtime[2], ==, buf[1]); /* MIN */
+ g_assert_cmpuint(testtime[3], ==, buf[2]); /* HOUR */
+ /* skip comparing Day of Week. Not handled correctly */
+ g_assert_cmpuint(testtime[5], ==, buf[4]); /* DoM */
+ if (use_century) {
+ g_assert_cmpuint(testtime[6], ==, buf[5]); /* MON+century */
+ } else {
+ g_assert_cmpuint(testtime[6] & 0x7f, ==, buf[5]); /* MON */
+ }
+ g_assert_cmpuint(testtime[7], ==, buf[6]); /* YEAR */
+
+ g_assert_cmpuint(retry, >, 0);
+}
+
+int main(int argc, char *argv[])
+{
+ int ret;
+ const char *arch = qtest_get_arch();
+ QTestState *s = NULL;
+
+ g_test_init(&argc, &argv, NULL);
+
+ if (strcmp(arch, "arm") == 0) {
+ s = qtest_start("-display none -machine imx25-pdk");
+ i2c = imx_i2c_create(s, IMX25_I2C_0_BASE);
+ addr = DS1338_ADDR;
+ use_century = false;
+
+ }
+
+ qtest_add_data_func("/ds-rtc-i2c/set24_12am", test_time_24_12am,
test_rtc_set);
+ qtest_add_data_func("/ds-rtc-i2c/set24_6am", test_time_24_6am,
test_rtc_set);
+ qtest_add_data_func("/ds-rtc-i2c/set24_12pm", test_time_24_12pm,
test_rtc_set);
+ qtest_add_data_func("/ds-rtc-i2c/set24_6pm", test_time_24_6pm,
test_rtc_set);
+ qtest_add_func("/ds-rtc-i2c/current", test_rtc_current);
+
+ ret = g_test_run();
+
+ qtest_end();
+
+ return ret;
+}
--
2.11.0