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4a4ff4c58f
Re-run Coccinelle script scripts/coccinelle/return_directly.cocci Signed-off-by: Laurent Vivier <lvivier@redhat.com> ppc part Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
270 lines
6.4 KiB
C
270 lines
6.4 KiB
C
/*
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* QTest testcase for the M48T59 and M48T08 real-time clocks
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*
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* Based on MC146818 RTC test:
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* Copyright IBM, Corp. 2012
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "libqtest.h"
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#define RTC_SECONDS 0x9
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#define RTC_MINUTES 0xa
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#define RTC_HOURS 0xb
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#define RTC_DAY_OF_WEEK 0xc
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#define RTC_DAY_OF_MONTH 0xd
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#define RTC_MONTH 0xe
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#define RTC_YEAR 0xf
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static uint32_t base;
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static uint16_t reg_base = 0x1ff0; /* 0x7f0 for m48t02 */
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static int base_year;
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static const char *base_machine;
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static bool use_mmio;
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static uint8_t cmos_read_mmio(QTestState *s, uint8_t reg)
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{
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return qtest_readb(s, base + (uint32_t)reg_base + (uint32_t)reg);
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}
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static void cmos_write_mmio(QTestState *s, uint8_t reg, uint8_t val)
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{
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uint8_t data = val;
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qtest_writeb(s, base + (uint32_t)reg_base + (uint32_t)reg, data);
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}
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static uint8_t cmos_read_ioio(QTestState *s, uint8_t reg)
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{
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qtest_outw(s, base + 0, reg_base + (uint16_t)reg);
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return qtest_inb(s, base + 3);
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}
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static void cmos_write_ioio(QTestState *s, uint8_t reg, uint8_t val)
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{
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qtest_outw(s, base + 0, reg_base + (uint16_t)reg);
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qtest_outb(s, base + 3, val);
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}
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static uint8_t cmos_read(QTestState *s, uint8_t reg)
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{
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if (use_mmio) {
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return cmos_read_mmio(s, reg);
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} else {
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return cmos_read_ioio(s, reg);
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}
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}
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static void cmos_write(QTestState *s, uint8_t reg, uint8_t val)
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{
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if (use_mmio) {
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cmos_write_mmio(s, reg, val);
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} else {
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cmos_write_ioio(s, reg, val);
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}
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}
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static int bcd2dec(int value)
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{
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return (((value >> 4) & 0x0F) * 10) + (value & 0x0F);
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}
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static int tm_cmp(struct tm *lhs, struct tm *rhs)
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{
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time_t a, b;
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struct tm d1, d2;
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memcpy(&d1, lhs, sizeof(d1));
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memcpy(&d2, rhs, sizeof(d2));
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a = mktime(&d1);
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b = mktime(&d2);
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if (a < b) {
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return -1;
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} else if (a > b) {
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return 1;
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}
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return 0;
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}
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#if 0
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static void print_tm(struct tm *tm)
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{
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printf("%04d-%02d-%02d %02d:%02d:%02d %+02ld\n",
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tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
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tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_gmtoff);
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}
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#endif
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static void cmos_get_date_time(QTestState *s, struct tm *date)
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{
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int sec, min, hour, mday, mon, year;
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time_t ts;
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struct tm dummy;
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sec = cmos_read(s, RTC_SECONDS);
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min = cmos_read(s, RTC_MINUTES);
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hour = cmos_read(s, RTC_HOURS);
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mday = cmos_read(s, RTC_DAY_OF_MONTH);
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mon = cmos_read(s, RTC_MONTH);
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year = cmos_read(s, RTC_YEAR);
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sec = bcd2dec(sec);
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min = bcd2dec(min);
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hour = bcd2dec(hour);
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mday = bcd2dec(mday);
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mon = bcd2dec(mon);
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year = bcd2dec(year);
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ts = time(NULL);
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localtime_r(&ts, &dummy);
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date->tm_isdst = dummy.tm_isdst;
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date->tm_sec = sec;
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date->tm_min = min;
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date->tm_hour = hour;
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date->tm_mday = mday;
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date->tm_mon = mon - 1;
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date->tm_year = base_year + year - 1900;
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#ifndef __sun__
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date->tm_gmtoff = 0;
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#endif
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ts = mktime(date);
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}
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static QTestState *m48t59_qtest_start(void)
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{
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return qtest_startf("-M %s -rtc clock=vm", base_machine);
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}
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static void bcd_check_time(void)
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{
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struct tm start, date[4], end;
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struct tm *datep;
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time_t ts;
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const int wiggle = 2;
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QTestState *s = m48t59_qtest_start();
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/*
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* This check assumes a few things. First, we cannot guarantee that we get
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* a consistent reading from the wall clock because we may hit an edge of
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* the clock while reading. To work around this, we read four clock readings
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* such that at least two of them should match. We need to assume that one
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* reading is corrupt so we need four readings to ensure that we have at
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* least two consecutive identical readings
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*
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* It's also possible that we'll cross an edge reading the host clock so
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* simply check to make sure that the clock reading is within the period of
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* when we expect it to be.
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*/
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ts = time(NULL);
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gmtime_r(&ts, &start);
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cmos_get_date_time(s, &date[0]);
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cmos_get_date_time(s, &date[1]);
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cmos_get_date_time(s, &date[2]);
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cmos_get_date_time(s, &date[3]);
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ts = time(NULL);
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gmtime_r(&ts, &end);
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if (tm_cmp(&date[0], &date[1]) == 0) {
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datep = &date[0];
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} else if (tm_cmp(&date[1], &date[2]) == 0) {
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datep = &date[1];
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} else if (tm_cmp(&date[2], &date[3]) == 0) {
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datep = &date[2];
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} else {
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g_assert_not_reached();
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}
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if (!(tm_cmp(&start, datep) <= 0 && tm_cmp(datep, &end) <= 0)) {
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long t, s;
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start.tm_isdst = datep->tm_isdst;
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t = (long)mktime(datep);
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s = (long)mktime(&start);
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if (t < s) {
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g_test_message("RTC is %ld second(s) behind wall-clock\n", (s - t));
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} else {
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g_test_message("RTC is %ld second(s) ahead of wall-clock\n", (t - s));
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}
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g_assert_cmpint(ABS(t - s), <=, wiggle);
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}
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qtest_quit(s);
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}
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/* success if no crash or abort */
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static void fuzz_registers(void)
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{
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unsigned int i;
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QTestState *s = m48t59_qtest_start();
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for (i = 0; i < 1000; i++) {
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uint8_t reg, val;
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reg = (uint8_t)g_test_rand_int_range(0, 16);
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val = (uint8_t)g_test_rand_int_range(0, 256);
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if (reg == 7) {
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/* watchdog setup register, may trigger system reset, skip */
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continue;
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}
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cmos_write(s, reg, val);
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cmos_read(s, reg);
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}
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qtest_quit(s);
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}
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static void base_setup(void)
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{
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const char *arch = qtest_get_arch();
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if (g_str_equal(arch, "sparc")) {
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/* Note: For sparc64, we'd need to map-in the PCI bridge memory first */
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base = 0x71200000;
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base_year = 1968;
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base_machine = "SS-5";
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use_mmio = true;
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} else if (g_str_equal(arch, "ppc") || g_str_equal(arch, "ppc64")) {
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base = 0xF0000000;
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base_year = 1968;
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base_machine = "ref405ep";
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use_mmio = true;
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} else {
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g_assert_not_reached();
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}
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}
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int main(int argc, char **argv)
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{
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base_setup();
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g_test_init(&argc, &argv, NULL);
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if (g_test_slow()) {
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/* Do not run this in timing-sensitive environments */
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qtest_add_func("/rtc/bcd-check-time", bcd_check_time);
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}
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qtest_add_func("/rtc/fuzz-registers", fuzz_registers);
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return g_test_run();
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}
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