Re: [Qemu-devel] [PATCH v4 7/7] qtest: add rtc-test test-case

[Anthony Liguori <anthony@codemonkey.ws>]

On 03/30/2012 12:15 PM, Blue Swirl wrote:
> On Wed, Mar 28, 2012 at 13:42, Paolo Bonzini<pbonzini@redhat.com>  wrote:
>> From: Anthony Liguori<aliguori@us.ibm.com>
>>
>> Signed-off-by: Anthony Liguori<aliguori@us.ibm.com>
>> Signed-off-by: Paolo Bonzini<pbonzini@redhat.com>
>> ---
>>   tests/Makefile   |    5 +
>>   tests/rtc-test.c |  263 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>   2 files changed, 268 insertions(+), 0 deletions(-)
>>   create mode 100644 tests/rtc-test.c
>>
>> diff --git a/tests/Makefile b/tests/Makefile
>> index 99ca308..42ce2d7 100644
>> --- a/tests/Makefile
>> +++ b/tests/Makefile
>> @@ -16,6 +16,11 @@ check-unit-y += tests/test-coroutine$(EXESUF)
>>
>>   check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
>>
>> +# All QTests for now are POSIX-only, but the dependencies are
>> +# really in libqtest, not in the testcases themselves.
>> +check-qtest-i386-y = tests/rtc-test
>> +check-qtest-x86_64-y = $(check-qtest-i386-y)
>
> I get this error when trying 'make check':
> GTESTER tests/test-string-output-visitor
> GTESTER tests/test-coroutine
> ccache gcc -O2 -g   -Wl,--warn-common -m64 -g
> /src/qemu/tests/rtc-test.c tests/libqtest.o osdep.o oslib-posix.o
> qemu-thread-posix.o   -o tests/rtc-test
> /src/qemu/tests/rtc-test.c:14:33: error: hw/mc146818rtc_regs.h: No
> such file or directory
> /src/qemu/tests/rtc-test.c:16:18: error: glib.h: No such file or directory
> /src/qemu/tests/rtc-test.c:46: warning: 'struct tm' declared inside
> parameter list
> /src/qemu/tests/rtc-test.c:46: warning: its scope is only this
> definition or declaration, which is probably not what you want
>
> It looks like the build rules are not correct. This is also an out of
> tree build. Perhaps the patsubst rules in tests/Makefile do not match
> rtc-test because it doesn't start with "qtest-"?

It works for me with an out of tree build.  I'm a bit surprised you don't have 
any LDFLAGS or LIBS set.

You are running make check at the top level, right?  And make check previously 
worked for you?

What's your host?

Regards,

Anthony Liguori

>> +
>>   GENERATED_HEADERS += tests/test-qapi-types.h tests/test-qapi-visit.h tests/test-qmp-commands.h
>>
>>   test-obj-y = tests/check-qint.o tests/check-qstring.o tests/check-qdict.o \
>> diff --git a/tests/rtc-test.c b/tests/rtc-test.c
>> new file mode 100644
>> index 0000000..22f807c
>> --- /dev/null
>> +++ b/tests/rtc-test.c
>> @@ -0,0 +1,263 @@
>> +/*
>> + * QTest testcase for the MC146818 real-time clock
>> + *
>> + * Copyright IBM, Corp. 2012
>> + *
>> + * Authors:
>> + *  Anthony Liguori<aliguori@us.ibm.com>
>> + *
>> + * This work is licensed under the terms of the GNU GPL, version 2 or later.
>> + * See the COPYING file in the top-level directory.
>> + *
>> + */
>> +#include "libqtest.h"
>> +#include "hw/mc146818rtc_regs.h"
>> +
>> +#include<glib.h>
>> +#include<stdio.h>
>> +#include<string.h>
>> +#include<stdlib.h>
>> +#include<unistd.h>
>> +
>> +static uint8_t base = 0x70;
>> +
>> +static int bcd2dec(int value)
>> +{
>> +    return (((value>>  4)&  0x0F) * 10) + (value&  0x0F);
>> +}
>> +
>> +static int dec2bcd(int value)
>> +{
>> +    return ((value / 10)<<  4) | (value % 10);
>> +}
>> +
>> +static uint8_t cmos_read(uint8_t reg)
>> +{
>> +    outb(base + 0, reg);
>> +    return inb(base + 1);
>> +}
>> +
>> +static void cmos_write(uint8_t reg, uint8_t val)
>> +{
>> +    outb(base + 0, reg);
>> +    outb(base + 1, val);
>> +}
>> +
>> +static int tm_cmp(struct tm *lhs, struct tm *rhs)
>> +{
>> +    time_t a, b;
>> +    struct tm d1, d2;
>> +
>> +    memcpy(&d1, lhs, sizeof(d1));
>> +    memcpy(&d2, rhs, sizeof(d2));
>> +
>> +    a = mktime(&d1);
>> +    b = mktime(&d2);
>> +
>> +    if (a<  b) {
>> +        return -1;
>> +    } else if (a>  b) {
>> +        return 1;
>> +    }
>> +
>> +    return 0;
>> +}
>> +
>> +#if 0
>> +static void print_tm(struct tm *tm)
>> +{
>> +    printf("%04d-%02d-%02d %02d:%02d:%02d\n",
>> +           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
>> +           tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_gmtoff);
>> +}
>> +#endif
>> +
>> +static void cmos_get_date_time(struct tm *date)
>> +{
>> +    int base_year = 2000, hour_offset;
>> +    int sec, min, hour, mday, mon, year;
>> +    time_t ts;
>> +    struct tm dummy;
>> +
>> +    sec = cmos_read(RTC_SECONDS);
>> +    min = cmos_read(RTC_MINUTES);
>> +    hour = cmos_read(RTC_HOURS);
>> +    mday = cmos_read(RTC_DAY_OF_MONTH);
>> +    mon = cmos_read(RTC_MONTH);
>> +    year = cmos_read(RTC_YEAR);
>> +
>> +    if ((cmos_read(RTC_REG_B)&  REG_B_DM) == 0) {
>> +        sec = bcd2dec(sec);
>> +        min = bcd2dec(min);
>> +        hour = bcd2dec(hour);
>> +        mday = bcd2dec(mday);
>> +        mon = bcd2dec(mon);
>> +        year = bcd2dec(year);
>> +        hour_offset = 80;
>> +    } else {
>> +        hour_offset = 0x80;
>> +    }
>> +
>> +    if ((cmos_read(0x0B)&  REG_B_24H) == 0) {
>> +        if (hour>= hour_offset) {
>> +            hour -= hour_offset;
>> +            hour += 12;
>> +        }
>> +    }
>> +
>> +    ts = time(NULL);
>> +    localtime_r(&ts,&dummy);
>> +
>> +    date->tm_isdst = dummy.tm_isdst;
>> +    date->tm_sec = sec;
>> +    date->tm_min = min;
>> +    date->tm_hour = hour;
>> +    date->tm_mday = mday;
>> +    date->tm_mon = mon - 1;
>> +    date->tm_year = base_year + year - 1900;
>> +    date->tm_gmtoff = 0;
>> +
>> +    ts = mktime(date);
>> +}
>> +
>> +static void check_time(int wiggle)
>> +{
>> +    struct tm start, date[4], end;
>> +    struct tm *datep;
>> +    time_t ts;
>> +
>> +    /*
>> +     * This check assumes a few things.  First, we cannot guarantee that we get
>> +     * a consistent reading from the wall clock because we may hit an edge of
>> +     * the clock while reading.  To work around this, we read four clock readings
>> +     * such that at least two of them should match.  We need to assume that one
>> +     * reading is corrupt so we need four readings to ensure that we have at
>> +     * least two consecutive identical readings
>> +     *
>> +     * It's also possible that we'll cross an edge reading the host clock so
>> +     * simply check to make sure that the clock reading is within the period of
>> +     * when we expect it to be.
>> +     */
>> +
>> +    ts = time(NULL);
>> +    gmtime_r(&ts,&start);
>> +
>> +    cmos_get_date_time(&date[0]);
>> +    cmos_get_date_time(&date[1]);
>> +    cmos_get_date_time(&date[2]);
>> +    cmos_get_date_time(&date[3]);
>> +
>> +    ts = time(NULL);
>> +    gmtime_r(&ts,&end);
>> +
>> +    if (tm_cmp(&date[0],&date[1]) == 0) {
>> +        datep =&date[0];
>> +    } else if (tm_cmp(&date[1],&date[2]) == 0) {
>> +        datep =&date[1];
>> +    } else if (tm_cmp(&date[2],&date[3]) == 0) {
>> +        datep =&date[2];
>> +    } else {
>> +        g_assert_not_reached();
>> +    }
>> +
>> +    if (!(tm_cmp(&start, datep)<= 0&&  tm_cmp(datep,&end)<= 0)) {
>> +        time_t t, s;
>> +
>> +        start.tm_isdst = datep->tm_isdst;
>> +
>> +        t = mktime(datep);
>> +        s = mktime(&start);
>> +        if (t<  s) {
>> +            g_test_message("RTC is %ld second(s) behind wall-clock\n", (s - t));
>> +        } else {
>> +            g_test_message("RTC is %ld second(s) ahead of wall-clock\n", (t - s));
>> +        }
>> +
>> +        g_assert_cmpint(ABS(t - s),<=, wiggle);
>> +    }
>> +}
>> +
>> +static int wiggle = 2;
>> +
>> +static void bcd_check_time(void)
>> +{
>> +    /* Set BCD mode */
>> +    cmos_write(RTC_REG_B, cmos_read(RTC_REG_B)&  ~REG_B_DM);
>> +    check_time(wiggle);
>> +}
>> +
>> +static void dec_check_time(void)
>> +{
>> +    /* Set DEC mode */
>> +    cmos_write(RTC_REG_B, cmos_read(RTC_REG_B) | REG_B_DM);
>> +    check_time(wiggle);
>> +}
>> +
>> +static void set_alarm_time(struct tm *tm)
>> +{
>> +    int sec;
>> +
>> +    sec = tm->tm_sec;
>> +
>> +    if ((cmos_read(RTC_REG_B)&  REG_B_DM) == 0) {
>> +        sec = dec2bcd(sec);
>> +    }
>> +
>> +    cmos_write(RTC_SECONDS_ALARM, sec);
>> +    cmos_write(RTC_MINUTES_ALARM, RTC_ALARM_DONT_CARE);
>> +    cmos_write(RTC_HOURS_ALARM, RTC_ALARM_DONT_CARE);
>> +}
>> +
>> +static void alarm_time(void)
>> +{
>> +    struct tm now;
>> +    time_t ts;
>> +    int i;
>> +
>> +    ts = time(NULL);
>> +    gmtime_r(&ts,&now);
>> +
>> +    /* set DEC mode */
>> +    cmos_write(RTC_REG_B, cmos_read(RTC_REG_B) | REG_B_DM);
>> +
>> +    g_assert(!get_irq(RTC_ISA_IRQ));
>> +    cmos_read(RTC_REG_C);
>> +
>> +    now.tm_sec = (now.tm_sec + 2) % 60;
>> +    set_alarm_time(&now);
>> +    cmos_write(RTC_REG_B, cmos_read(RTC_REG_B) | REG_B_AIE);
>> +
>> +    for (i = 0; i<  2 + wiggle; i++) {
>> +        if (get_irq(RTC_ISA_IRQ)) {
>> +            break;
>> +        }
>> +
>> +        clock_step(1000000000);
>> +    }
>> +
>> +    g_assert(get_irq(RTC_ISA_IRQ));
>> +    g_assert((cmos_read(RTC_REG_C)&  REG_C_AF) != 0);
>> +    g_assert(cmos_read(RTC_REG_C) == 0);
>> +}
>> +
>> +int main(int argc, char **argv)
>> +{
>> +    QTestState *s = NULL;
>> +    int ret;
>> +
>> +    g_test_init(&argc,&argv, NULL);
>> +
>> +    s = qtest_start("-display none -rtc clock=vm");
>> +    qtest_irq_intercept_in(s, "ioapic");
>> +
>> +    qtest_add_func("/rtc/bcd/check-time", bcd_check_time);
>> +    qtest_add_func("/rtc/dec/check-time", dec_check_time);
>> +    qtest_add_func("/rtc/alarm-time", alarm_time);
>> +    ret = g_test_run();
>> +
>> +    if (s) {
>> +        qtest_quit(s);
>> +    }
>> +
>> +    return ret;
>> +}
>> --
>> 1.7.9.1
>>
>>
>