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rtc-test: cleanup register_b_set_flag test

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Introduce set_datetime_bcd/assert_datetime_bcd, and handle
UIP correctly.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-07-25 13:46:07 +02:00
parent fafeb41cd0
commit bc706fa903
1 changed files with 47 additions and 31 deletions
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78
tests/rtc-test.c
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@ -17,6 +17,8 @@
#include "qemu/timer.h"
#include "hw/timer/mc146818rtc_regs.h"
#define UIP_HOLD_LENGTH (8 * NANOSECONDS_PER_SECOND / 32768)
static uint8_t base = 0x70;
static int bcd2dec(int value)
@ -297,18 +299,32 @@ static void alarm_time(void)
g_assert(cmos_read(RTC_REG_C) == 0);
}
static void set_time(int mode, int h, int m, int s)
static void set_time_regs(int h, int m, int s)
{
/* set BCD 12 hour mode */
cmos_write(RTC_REG_B, mode);
cmos_write(RTC_REG_A, 0x76);
cmos_write(RTC_HOURS, h);
cmos_write(RTC_MINUTES, m);
cmos_write(RTC_SECONDS, s);
}
static void set_time(int mode, int h, int m, int s)
{
cmos_write(RTC_REG_B, mode);
cmos_write(RTC_REG_A, 0x76);
set_time_regs(h, m, s);
cmos_write(RTC_REG_A, 0x26);
}
static void set_datetime_bcd(int h, int min, int s, int d, int m, int y)
{
cmos_write(RTC_HOURS, h);
cmos_write(RTC_MINUTES, min);
cmos_write(RTC_SECONDS, s);
cmos_write(RTC_YEAR, y & 0xFF);
cmos_write(RTC_CENTURY, y >> 8);
cmos_write(RTC_MONTH, m);
cmos_write(RTC_DAY_OF_MONTH, d);
}
#define assert_time(h, m, s) \
do { \
g_assert_cmpint(cmos_read(RTC_HOURS), ==, h); \
@ -316,6 +332,17 @@ static void set_time(int mode, int h, int m, int s)
g_assert_cmpint(cmos_read(RTC_SECONDS), ==, s); \
} while(0)
#define assert_datetime_bcd(h, min, s, d, m, y) \
do { \
g_assert_cmpint(cmos_read(RTC_HOURS), ==, h); \
g_assert_cmpint(cmos_read(RTC_MINUTES), ==, min); \
g_assert_cmpint(cmos_read(RTC_SECONDS), ==, s); \
g_assert_cmpint(cmos_read(RTC_DAY_OF_MONTH), ==, d); \
g_assert_cmpint(cmos_read(RTC_MONTH), ==, m); \
g_assert_cmpint(cmos_read(RTC_YEAR), ==, (y & 0xFF)); \
g_assert_cmpint(cmos_read(RTC_CENTURY), ==, (y >> 8)); \
} while(0)
static void basic_12h_bcd(void)
{
/* set BCD 12 hour mode */
@ -506,41 +533,30 @@ static void fuzz_registers(void)
static void register_b_set_flag(void)
{
if (cmos_read(RTC_REG_A) & REG_A_UIP) {
clock_step(UIP_HOLD_LENGTH + NANOSECONDS_PER_SECOND / 5);
}
g_assert_cmpint(cmos_read(RTC_REG_A) & REG_A_UIP, ==, 0);
/* Enable binary-coded decimal (BCD) mode and SET flag in Register B*/
cmos_write(RTC_REG_B, REG_B_24H | REG_B_SET);
cmos_write(RTC_REG_A, 0x76);
cmos_write(RTC_YEAR, 0x11);
cmos_write(RTC_CENTURY, 0x20);
cmos_write(RTC_MONTH, 0x02);
cmos_write(RTC_DAY_OF_MONTH, 0x02);
cmos_write(RTC_HOURS, 0x02);
cmos_write(RTC_MINUTES, 0x04);
cmos_write(RTC_SECONDS, 0x58);
cmos_write(RTC_REG_A, 0x26);
set_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
/* Since SET flag is still enabled, these are equality checks. */
g_assert_cmpint(cmos_read(RTC_HOURS), ==, 0x02);
g_assert_cmpint(cmos_read(RTC_MINUTES), ==, 0x04);
g_assert_cmpint(cmos_read(RTC_SECONDS), ==, 0x58);
g_assert_cmpint(cmos_read(RTC_DAY_OF_MONTH), ==, 0x02);
g_assert_cmpint(cmos_read(RTC_MONTH), ==, 0x02);
g_assert_cmpint(cmos_read(RTC_YEAR), ==, 0x11);
g_assert_cmpint(cmos_read(RTC_CENTURY), ==, 0x20);
assert_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
/* Since SET flag is still enabled, time does not advance. */
clock_step(1000000000LL);
assert_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
/* Disable SET flag in Register B */
cmos_write(RTC_REG_B, cmos_read(RTC_REG_B) & ~REG_B_SET);
g_assert_cmpint(cmos_read(RTC_HOURS), ==, 0x02);
g_assert_cmpint(cmos_read(RTC_MINUTES), ==, 0x04);
assert_datetime_bcd(0x02, 0x04, 0x58, 0x02, 0x02, 0x2011);
/* Since SET flag is disabled, this is an inequality check.
* We (reasonably) assume that no (sexagesimal) overflow occurs. */
g_assert_cmpint(cmos_read(RTC_SECONDS), >=, 0x58);
g_assert_cmpint(cmos_read(RTC_DAY_OF_MONTH), ==, 0x02);
g_assert_cmpint(cmos_read(RTC_MONTH), ==, 0x02);
g_assert_cmpint(cmos_read(RTC_YEAR), ==, 0x11);
g_assert_cmpint(cmos_read(RTC_CENTURY), ==, 0x20);
/* Since SET flag is disabled, the clock now advances. */
clock_step(1000000000LL);
assert_datetime_bcd(0x02, 0x04, 0x59, 0x02, 0x02, 0x2011);
}
#define RTC_PERIOD_CODE1 13 /* 8 Hz */