Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 578 insertions, 0 deletions

diff --git a/qemu/tests/rtc-test.c b/qemu/tests/rtc-test.c
new file mode 100644
index 000000000..4243624de
--- /dev/null
+++ b/qemu/tests/rtc-test.c
@@ -0,0 +1,578 @@
+/*
+ * 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 <glib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "libqtest.h"
+#include "hw/timer/mc146818rtc_regs.h"
+
+static uint8_t base = 0x70;
+
+static int bcd2dec(int value)
+{
+    return (((value >> 4) & 0x0F) * 10) + (value & 0x0F);
+}
+
+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;
+#ifndef __sun__
+    date->tm_gmtoff = 0;
+#endif
+
+    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)) {
+        long t, s;
+
+        start.tm_isdst = datep->tm_isdst;
+
+        t = (long)mktime(datep);
+        s = (long)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 set_year_20xx(void)
+{
+    /* Set BCD mode */
+    cmos_write(RTC_REG_B, REG_B_24H);
+    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);
+
+    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);
+
+    if (sizeof(time_t) == 4) {
+        return;
+    }
+
+    /* Set a date in 2080 to ensure there is no year-2038 overflow.  */
+    cmos_write(RTC_REG_A, 0x76);
+    cmos_write(RTC_YEAR, 0x80);
+    cmos_write(RTC_REG_A, 0x26);
+
+    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), ==, 0x80);
+    g_assert_cmpint(cmos_read(RTC_CENTURY), ==, 0x20);
+
+    cmos_write(RTC_REG_A, 0x76);
+    cmos_write(RTC_YEAR, 0x11);
+    cmos_write(RTC_REG_A, 0x26);
+
+    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);
+}
+
+static void set_year_1980(void)
+{
+    /* Set BCD mode */
+    cmos_write(RTC_REG_B, REG_B_24H);
+    cmos_write(RTC_REG_A, 0x76);
+    cmos_write(RTC_YEAR, 0x80);
+    cmos_write(RTC_CENTURY, 0x19);
+    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);
+
+    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), ==, 0x80);
+    g_assert_cmpint(cmos_read(RTC_CENTURY), ==, 0x19);
+}
+
+static void bcd_check_time(void)
+{
+    /* Set BCD mode */
+    cmos_write(RTC_REG_B, REG_B_24H);
+    check_time(wiggle);
+}
+
+static void dec_check_time(void)
+{
+    /* Set DEC mode */
+    cmos_write(RTC_REG_B, REG_B_24H | REG_B_DM);
+    check_time(wiggle);
+}
+
+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, REG_B_24H | REG_B_DM);
+
+    g_assert(!get_irq(RTC_ISA_IRQ));
+    cmos_read(RTC_REG_C);
+
+    now.tm_sec = (now.tm_sec + 2) % 60;
+    cmos_write(RTC_SECONDS_ALARM, now.tm_sec);
+    cmos_write(RTC_MINUTES_ALARM, RTC_ALARM_DONT_CARE);
+    cmos_write(RTC_HOURS_ALARM, RTC_ALARM_DONT_CARE);
+    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);
+}
+
+static void set_time(int mode, 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);
+    cmos_write(RTC_REG_A, 0x26);
+}
+
+#define assert_time(h, m, s) \
+    do { \
+        g_assert_cmpint(cmos_read(RTC_HOURS), ==, h); \
+        g_assert_cmpint(cmos_read(RTC_MINUTES), ==, m); \
+        g_assert_cmpint(cmos_read(RTC_SECONDS), ==, s); \
+    } while(0)
+
+static void basic_12h_bcd(void)
+{
+    /* set BCD 12 hour mode */
+    set_time(0, 0x81, 0x59, 0x00);
+    clock_step(1000000000LL);
+    assert_time(0x81, 0x59, 0x01);
+    clock_step(59000000000LL);
+    assert_time(0x82, 0x00, 0x00);
+
+    /* test BCD wraparound */
+    set_time(0, 0x09, 0x59, 0x59);
+    clock_step(60000000000LL);
+    assert_time(0x10, 0x00, 0x59);
+
+    /* 12 AM -> 1 AM */
+    set_time(0, 0x12, 0x59, 0x59);
+    clock_step(1000000000LL);
+    assert_time(0x01, 0x00, 0x00);
+
+    /* 12 PM -> 1 PM */
+    set_time(0, 0x92, 0x59, 0x59);
+    clock_step(1000000000LL);
+    assert_time(0x81, 0x00, 0x00);
+
+    /* 11 AM -> 12 PM */
+    set_time(0, 0x11, 0x59, 0x59);
+    clock_step(1000000000LL);
+    assert_time(0x92, 0x00, 0x00);
+    /* TODO: test day wraparound */
+
+    /* 11 PM -> 12 AM */
+    set_time(0, 0x91, 0x59, 0x59);
+    clock_step(1000000000LL);
+    assert_time(0x12, 0x00, 0x00);
+    /* TODO: test day wraparound */
+}
+
+static void basic_12h_dec(void)
+{
+    /* set decimal 12 hour mode */
+    set_time(REG_B_DM, 0x81, 59, 0);
+    clock_step(1000000000LL);
+    assert_time(0x81, 59, 1);
+    clock_step(59000000000LL);
+    assert_time(0x82, 0, 0);
+
+    /* 12 PM -> 1 PM */
+    set_time(REG_B_DM, 0x8c, 59, 59);
+    clock_step(1000000000LL);
+    assert_time(0x81, 0, 0);
+
+    /* 12 AM -> 1 AM */
+    set_time(REG_B_DM, 0x0c, 59, 59);
+    clock_step(1000000000LL);
+    assert_time(0x01, 0, 0);
+
+    /* 11 AM -> 12 PM */
+    set_time(REG_B_DM, 0x0b, 59, 59);
+    clock_step(1000000000LL);
+    assert_time(0x8c, 0, 0);
+
+    /* 11 PM -> 12 AM */
+    set_time(REG_B_DM, 0x8b, 59, 59);
+    clock_step(1000000000LL);
+    assert_time(0x0c, 0, 0);
+    /* TODO: test day wraparound */
+}
+
+static void basic_24h_bcd(void)
+{
+    /* set BCD 24 hour mode */
+    set_time(REG_B_24H, 0x09, 0x59, 0x00);
+    clock_step(1000000000LL);
+    assert_time(0x09, 0x59, 0x01);
+    clock_step(59000000000LL);
+    assert_time(0x10, 0x00, 0x00);
+
+    /* test BCD wraparound */
+    set_time(REG_B_24H, 0x09, 0x59, 0x00);
+    clock_step(60000000000LL);
+    assert_time(0x10, 0x00, 0x00);
+
+    /* TODO: test day wraparound */
+    set_time(REG_B_24H, 0x23, 0x59, 0x00);
+    clock_step(60000000000LL);
+    assert_time(0x00, 0x00, 0x00);
+}
+
+static void basic_24h_dec(void)
+{
+    /* set decimal 24 hour mode */
+    set_time(REG_B_24H | REG_B_DM, 9, 59, 0);
+    clock_step(1000000000LL);
+    assert_time(9, 59, 1);
+    clock_step(59000000000LL);
+    assert_time(10, 0, 0);
+
+    /* test BCD wraparound */
+    set_time(REG_B_24H | REG_B_DM, 9, 59, 0);
+    clock_step(60000000000LL);
+    assert_time(10, 0, 0);
+
+    /* TODO: test day wraparound */
+    set_time(REG_B_24H | REG_B_DM, 23, 59, 0);
+    clock_step(60000000000LL);
+    assert_time(0, 0, 0);
+}
+
+static void am_pm_alarm(void)
+{
+    cmos_write(RTC_MINUTES_ALARM, 0xC0);
+    cmos_write(RTC_SECONDS_ALARM, 0xC0);
+
+    /* set BCD 12 hour mode */
+    cmos_write(RTC_REG_B, 0);
+
+    /* Set time and alarm hour.  */
+    cmos_write(RTC_REG_A, 0x76);
+    cmos_write(RTC_HOURS_ALARM, 0x82);
+    cmos_write(RTC_HOURS, 0x81);
+    cmos_write(RTC_MINUTES, 0x59);
+    cmos_write(RTC_SECONDS, 0x00);
+    cmos_read(RTC_REG_C);
+    cmos_write(RTC_REG_A, 0x26);
+
+    /* Check that alarm triggers when AM/PM is set.  */
+    clock_step(60000000000LL);
+    g_assert(cmos_read(RTC_HOURS) == 0x82);
+    g_assert((cmos_read(RTC_REG_C) & REG_C_AF) != 0);
+
+    /*
+     * Each of the following two tests takes over 60 seconds due to the time
+     * needed to report the PIT interrupts.  Unfortunately, our PIT device
+     * model keeps counting even when GATE=0, so we cannot simply disable
+     * it in main().
+     */
+    if (g_test_quick()) {
+        return;
+    }
+
+    /* set DEC 12 hour mode */
+    cmos_write(RTC_REG_B, REG_B_DM);
+
+    /* Set time and alarm hour.  */
+    cmos_write(RTC_REG_A, 0x76);
+    cmos_write(RTC_HOURS_ALARM, 0x82);
+    cmos_write(RTC_HOURS, 3);
+    cmos_write(RTC_MINUTES, 0);
+    cmos_write(RTC_SECONDS, 0);
+    cmos_read(RTC_REG_C);
+    cmos_write(RTC_REG_A, 0x26);
+
+    /* Check that alarm triggers.  */
+    clock_step(3600 * 11 * 1000000000LL);
+    g_assert(cmos_read(RTC_HOURS) == 0x82);
+    g_assert((cmos_read(RTC_REG_C) & REG_C_AF) != 0);
+
+    /* Same as above, with inverted HOURS and HOURS_ALARM.  */
+    cmos_write(RTC_REG_A, 0x76);
+    cmos_write(RTC_HOURS_ALARM, 2);
+    cmos_write(RTC_HOURS, 3);
+    cmos_write(RTC_MINUTES, 0);
+    cmos_write(RTC_SECONDS, 0);
+    cmos_read(RTC_REG_C);
+    cmos_write(RTC_REG_A, 0x26);
+
+    /* Check that alarm does not trigger if hours differ only by AM/PM.  */
+    clock_step(3600 * 11 * 1000000000LL);
+    g_assert(cmos_read(RTC_HOURS) == 0x82);
+    g_assert((cmos_read(RTC_REG_C) & REG_C_AF) == 0);
+}
+
+/* success if no crash or abort */
+static void fuzz_registers(void)
+{
+    unsigned int i;
+
+    for (i = 0; i < 1000; i++) {
+        uint8_t reg, val;
+
+        reg = (uint8_t)g_test_rand_int_range(0, 16);
+        val = (uint8_t)g_test_rand_int_range(0, 256);
+
+        cmos_write(reg, val);
+        cmos_read(reg);
+    }
+}
+
+static void register_b_set_flag(void)
+{
+    /* 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);
+
+    /* 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);
+
+    /* 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);
+
+    /* 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);
+}
+
+int main(int argc, char **argv)
+{
+    QTestState *s = NULL;
+    int ret;
+
+    g_test_init(&argc, &argv, NULL);
+
+    s = qtest_start("-rtc clock=vm");
+    qtest_irq_intercept_in(s, "ioapic");
+
+    qtest_add_func("/rtc/check-time/bcd", bcd_check_time);
+    qtest_add_func("/rtc/check-time/dec", dec_check_time);
+    qtest_add_func("/rtc/alarm/interrupt", alarm_time);
+    qtest_add_func("/rtc/alarm/am-pm", am_pm_alarm);
+    qtest_add_func("/rtc/basic/dec-24h", basic_24h_dec);
+    qtest_add_func("/rtc/basic/bcd-24h", basic_24h_bcd);
+    qtest_add_func("/rtc/basic/dec-12h", basic_12h_dec);
+    qtest_add_func("/rtc/basic/bcd-12h", basic_12h_bcd);
+    qtest_add_func("/rtc/set-year/20xx", set_year_20xx);
+    qtest_add_func("/rtc/set-year/1980", set_year_1980);
+    qtest_add_func("/rtc/misc/register_b_set_flag", register_b_set_flag);
+    qtest_add_func("/rtc/misc/fuzz-registers", fuzz_registers);
+    ret = g_test_run();
+
+    if (s) {
+        qtest_quit(s);
+    }
+
+    return ret;
+}