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tests: add testcase for TCO watchdog emulation 

This patch adds a testcase that covers the following:
  1) TCO default values
  2) first and second TCO timeout
  3) watch and validate ticks counter through TCO_RLD register
  4) maximum supported TCO timeout (0x3ff)
  5) watchdog actions (pause/reset/shutdown/none) upon second TCO
     timeout
  6) set and get of TCO control and status bits

MST: The test does not pass yet, so it's disabled by default.

Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Paulo Alcantara 2015-06-28 14:58:57 -03:00 committed by Michael S. Tsirkin
parent 920557971b
commit 45dcdb9da6
2 changed files with 462 additions and 0 deletions
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2
tests/Makefile
View File

@ -152,6 +152,7 @@ check-qtest-i386-y += tests/i440fx-test$(EXESUF)
check-qtest-i386-y += tests/fw_cfg-test$(EXESUF)
check-qtest-i386-y += tests/drive_del-test$(EXESUF)
check-qtest-i386-y += tests/wdt_ib700-test$(EXESUF)
#check-qtest-i386-y += tests/tco-test$(EXESUF)
gcov-files-i386-y += hw/watchdog/watchdog.c hw/watchdog/wdt_ib700.c
check-qtest-i386-y += $(check-qtest-pci-y)
gcov-files-i386-y += $(gcov-files-pci-y)
@ -370,6 +371,7 @@ tests/eepro100-test$(EXESUF): tests/eepro100-test.o
tests/vmxnet3-test$(EXESUF): tests/vmxnet3-test.o
tests/ne2000-test$(EXESUF): tests/ne2000-test.o
tests/wdt_ib700-test$(EXESUF): tests/wdt_ib700-test.o
tests/tco-test$(EXESUF): tests/tco-test.o $(libqos-pc-obj-y)
tests/virtio-balloon-test$(EXESUF): tests/virtio-balloon-test.o
tests/virtio-blk-test$(EXESUF): tests/virtio-blk-test.o $(libqos-virtio-obj-y)
tests/virtio-net-test$(EXESUF): tests/virtio-net-test.o $(libqos-pc-obj-y)

460
tests/tco-test.c Normal file
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@ -0,0 +1,460 @@
/*
* QEMU ICH9 TCO emulation tests
*
* Copyright (c) 2015 Paulo Alcantara <pcacjr@zytor.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 <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "libqtest.h"
#include "libqos/pci.h"
#include "libqos/pci-pc.h"
#include "hw/pci/pci_regs.h"
#include "hw/i386/ich9.h"
#include "hw/acpi/ich9.h"
#include "hw/acpi/tco.h"
#define RCBA_BASE_ADDR 0xfed1c000
#define PM_IO_BASE_ADDR 0xb000
enum {
TCO_RLD_DEFAULT = 0x0000,
TCO_DAT_IN_DEFAULT = 0x00,
TCO_DAT_OUT_DEFAULT = 0x00,
TCO1_STS_DEFAULT = 0x0000,
TCO2_STS_DEFAULT = 0x0000,
TCO1_CNT_DEFAULT = 0x0000,
TCO2_CNT_DEFAULT = 0x0008,
TCO_MESSAGE1_DEFAULT = 0x00,
TCO_MESSAGE2_DEFAULT = 0x00,
TCO_WDCNT_DEFAULT = 0x00,
TCO_TMR_DEFAULT = 0x0004,
SW_IRQ_GEN_DEFAULT = 0x03,
};
#define TCO_SECS_TO_TICKS(secs) (((secs) * 10) / 6)
#define TCO_TICKS_TO_SECS(ticks) (((ticks) * 6) / 10)
typedef struct {
const char *args;
QPCIDevice *dev;
void *lpc_base;
void *tco_io_base;
} TestData;
static void test_init(TestData *d)
{
QPCIBus *bus;
QTestState *qs;
char *s;
s = g_strdup_printf("-machine q35 %s", !d->args ? "" : d->args);
qs = qtest_start(s);
qtest_irq_intercept_in(qs, "ioapic");
g_free(s);
bus = qpci_init_pc();
d->dev = qpci_device_find(bus, QPCI_DEVFN(0x1f, 0x00));
g_assert(d->dev != NULL);
/* map PCI-to-LPC bridge interface BAR */
d->lpc_base = qpci_iomap(d->dev, 0, NULL);
qpci_device_enable(d->dev);
g_assert(d->lpc_base != NULL);
/* set ACPI PM I/O space base address */
qpci_config_writel(d->dev, (uintptr_t)d->lpc_base + ICH9_LPC_PMBASE,
PM_IO_BASE_ADDR | 0x1);
/* enable ACPI I/O */
qpci_config_writeb(d->dev, (uintptr_t)d->lpc_base + ICH9_LPC_ACPI_CTRL,
0x80);
/* set Root Complex BAR */
qpci_config_writel(d->dev, (uintptr_t)d->lpc_base + ICH9_LPC_RCBA,
RCBA_BASE_ADDR | 0x1);
d->tco_io_base = (void *)((uintptr_t)PM_IO_BASE_ADDR + 0x60);
}
static void stop_tco(const TestData *d)
{
uint32_t val;
val = qpci_io_readw(d->dev, d->tco_io_base + TCO1_CNT);
val |= TCO_TMR_HLT;
qpci_io_writew(d->dev, d->tco_io_base + TCO1_CNT, val);
}
static void start_tco(const TestData *d)
{
uint32_t val;
val = qpci_io_readw(d->dev, d->tco_io_base + TCO1_CNT);
val &= ~TCO_TMR_HLT;
qpci_io_writew(d->dev, d->tco_io_base + TCO1_CNT, val);
}
static void load_tco(const TestData *d)
{
qpci_io_writew(d->dev, d->tco_io_base + TCO_RLD, 4);
}
static void set_tco_timeout(const TestData *d, uint16_t ticks)
{
qpci_io_writew(d->dev, d->tco_io_base + TCO_TMR, ticks);
}
static void clear_tco_status(const TestData *d)
{
qpci_io_writew(d->dev, d->tco_io_base + TCO1_STS, 0x0008);
qpci_io_writew(d->dev, d->tco_io_base + TCO2_STS, 0x0002);
qpci_io_writew(d->dev, d->tco_io_base + TCO2_STS, 0x0004);
}
static void reset_on_second_timeout(bool enable)
{
uint32_t val;
val = readl(RCBA_BASE_ADDR + ICH9_CC_GCS);
if (enable) {
val &= ~ICH9_CC_GCS_NO_REBOOT;
} else {
val |= ICH9_CC_GCS_NO_REBOOT;
}
writel(RCBA_BASE_ADDR + ICH9_CC_GCS, val);
}
static void test_tco_defaults(void)
{
TestData d;
d.args = NULL;
test_init(&d);
g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_base + TCO_RLD), ==,
TCO_RLD_DEFAULT);
/* TCO_DAT_IN & TCO_DAT_OUT */
g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_base + TCO_DAT_IN), ==,
(TCO_DAT_OUT_DEFAULT << 8) | TCO_DAT_IN_DEFAULT);
/* TCO1_STS & TCO2_STS */
g_assert_cmpint(qpci_io_readl(d.dev, d.tco_io_base + TCO1_STS), ==,
(TCO2_STS_DEFAULT << 16) | TCO1_STS_DEFAULT);
/* TCO1_CNT & TCO2_CNT */
g_assert_cmpint(qpci_io_readl(d.dev, d.tco_io_base + TCO1_CNT), ==,
(TCO2_CNT_DEFAULT << 16) | TCO1_CNT_DEFAULT);
/* TCO_MESSAGE1 & TCO_MESSAGE2 */
g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_base + TCO_MESSAGE1), ==,
(TCO_MESSAGE2_DEFAULT << 8) | TCO_MESSAGE1_DEFAULT);
g_assert_cmpint(qpci_io_readb(d.dev, d.tco_io_base + TCO_WDCNT), ==,
TCO_WDCNT_DEFAULT);
g_assert_cmpint(qpci_io_readb(d.dev, d.tco_io_base + SW_IRQ_GEN), ==,
SW_IRQ_GEN_DEFAULT);
g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_base + TCO_TMR), ==,
TCO_TMR_DEFAULT);
qtest_end();
}
static void test_tco_timeout(void)
{
TestData d;
const uint16_t ticks = TCO_SECS_TO_TICKS(4);
uint32_t val;
int ret;
d.args = NULL;
test_init(&d);
stop_tco(&d);
clear_tco_status(&d);
reset_on_second_timeout(false);
set_tco_timeout(&d, ticks);
load_tco(&d);
start_tco(&d);
clock_step(ticks * TCO_TICK_NSEC);
/* test first timeout */
val = qpci_io_readw(d.dev, d.tco_io_base + TCO1_STS);
ret = val & TCO_TIMEOUT ? 1 : 0;
g_assert(ret == 1);
/* test clearing timeout bit */
val |= TCO_TIMEOUT;
qpci_io_writew(d.dev, d.tco_io_base + TCO1_STS, val);
val = qpci_io_readw(d.dev, d.tco_io_base + TCO1_STS);
ret = val & TCO_TIMEOUT ? 1 : 0;
g_assert(ret == 0);
/* test second timeout */
clock_step(ticks * TCO_TICK_NSEC);
val = qpci_io_readw(d.dev, d.tco_io_base + TCO1_STS);
ret = val & TCO_TIMEOUT ? 1 : 0;
g_assert(ret == 1);
val = qpci_io_readw(d.dev, d.tco_io_base + TCO2_STS);
ret = val & TCO_SECOND_TO_STS ? 1 : 0;
g_assert(ret == 1);
stop_tco(&d);
qtest_end();
}
static void test_tco_max_timeout(void)
{
TestData d;
const uint16_t ticks = 0xffff;
uint32_t val;
int ret;
d.args = NULL;
test_init(&d);
stop_tco(&d);
clear_tco_status(&d);
reset_on_second_timeout(false);
set_tco_timeout(&d, ticks);
load_tco(&d);
start_tco(&d);
clock_step(((ticks & TCO_TMR_MASK) - 1) * TCO_TICK_NSEC);
val = qpci_io_readw(d.dev, d.tco_io_base + TCO_RLD);
g_assert_cmpint(val & TCO_RLD_MASK, ==, 1);
val = qpci_io_readw(d.dev, d.tco_io_base + TCO1_STS);
ret = val & TCO_TIMEOUT ? 1 : 0;
g_assert(ret == 0);
clock_step(TCO_TICK_NSEC);
val = qpci_io_readw(d.dev, d.tco_io_base + TCO1_STS);
ret = val & TCO_TIMEOUT ? 1 : 0;
g_assert(ret == 1);
stop_tco(&d);
qtest_end();
}
static QDict *get_watchdog_action(void)
{
QDict *ev = qmp("");
QDict *data;
g_assert(!strcmp(qdict_get_str(ev, "event"), "WATCHDOG"));
data = qdict_get_qdict(ev, "data");
QINCREF(data);
QDECREF(ev);
return data;
}
static void test_tco_second_timeout_pause(void)
{
TestData td;
const uint16_t ticks = TCO_SECS_TO_TICKS(32);
QDict *ad;
td.args = "-watchdog-action pause";
test_init(&td);
stop_tco(&td);
clear_tco_status(&td);
reset_on_second_timeout(true);
set_tco_timeout(&td, TCO_SECS_TO_TICKS(16));
load_tco(&td);
start_tco(&td);
clock_step(ticks * TCO_TICK_NSEC * 2);
ad = get_watchdog_action();
g_assert(!strcmp(qdict_get_str(ad, "action"), "pause"));
QDECREF(ad);
stop_tco(&td);
qtest_end();
}
static void test_tco_second_timeout_reset(void)
{
TestData td;
const uint16_t ticks = TCO_SECS_TO_TICKS(16);
QDict *ad;
td.args = "-watchdog-action reset";
test_init(&td);
stop_tco(&td);
clear_tco_status(&td);
reset_on_second_timeout(true);
set_tco_timeout(&td, TCO_SECS_TO_TICKS(16));
load_tco(&td);
start_tco(&td);
clock_step(ticks * TCO_TICK_NSEC * 2);
ad = get_watchdog_action();
g_assert(!strcmp(qdict_get_str(ad, "action"), "reset"));
QDECREF(ad);
stop_tco(&td);
qtest_end();
}
static void test_tco_second_timeout_shutdown(void)
{
TestData td;
const uint16_t ticks = TCO_SECS_TO_TICKS(128);
QDict *ad;
td.args = "-watchdog-action shutdown";
test_init(&td);
stop_tco(&td);
clear_tco_status(&td);
reset_on_second_timeout(true);
set_tco_timeout(&td, ticks);
load_tco(&td);
start_tco(&td);
clock_step(ticks * TCO_TICK_NSEC * 2);
ad = get_watchdog_action();
g_assert(!strcmp(qdict_get_str(ad, "action"), "shutdown"));
QDECREF(ad);
stop_tco(&td);
qtest_end();
}
static void test_tco_second_timeout_none(void)
{
TestData td;
const uint16_t ticks = TCO_SECS_TO_TICKS(256);
QDict *ad;
td.args = "-watchdog-action none";
test_init(&td);
stop_tco(&td);
clear_tco_status(&td);
reset_on_second_timeout(true);
set_tco_timeout(&td, ticks);
load_tco(&td);
start_tco(&td);
clock_step(ticks * TCO_TICK_NSEC * 2);
ad = get_watchdog_action();
g_assert(!strcmp(qdict_get_str(ad, "action"), "none"));
QDECREF(ad);
stop_tco(&td);
qtest_end();
}
static void test_tco_ticks_counter(void)
{
TestData d;
uint16_t ticks = TCO_SECS_TO_TICKS(8);
uint16_t rld;
d.args = NULL;
test_init(&d);
stop_tco(&d);
clear_tco_status(&d);
reset_on_second_timeout(false);
set_tco_timeout(&d, ticks);
load_tco(&d);
start_tco(&d);
do {
rld = qpci_io_readw(d.dev, d.tco_io_base + TCO_RLD) & TCO_RLD_MASK;
g_assert_cmpint(rld, ==, ticks);
clock_step(TCO_TICK_NSEC);
ticks--;
} while (!(qpci_io_readw(d.dev, d.tco_io_base + TCO1_STS) & TCO_TIMEOUT));
stop_tco(&d);
qtest_end();
}
static void test_tco1_control_bits(void)
{
TestData d;
uint16_t val;
d.args = NULL;
test_init(&d);
val = TCO_LOCK;
qpci_io_writew(d.dev, d.tco_io_base + TCO1_CNT, val);
val &= ~TCO_LOCK;
qpci_io_writew(d.dev, d.tco_io_base + TCO1_CNT, val);
g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_base + TCO1_CNT), ==,
TCO_LOCK);
qtest_end();
}
static void test_tco1_status_bits(void)
{
TestData d;
uint16_t ticks = 8;
uint16_t val;
int ret;
d.args = NULL;
test_init(&d);
stop_tco(&d);
clear_tco_status(&d);
reset_on_second_timeout(false);
set_tco_timeout(&d, ticks);
load_tco(&d);
start_tco(&d);
clock_step(ticks * TCO_TICK_NSEC);
qpci_io_writeb(d.dev, d.tco_io_base + TCO_DAT_IN, 0);
qpci_io_writeb(d.dev, d.tco_io_base + TCO_DAT_OUT, 0);
val = qpci_io_readw(d.dev, d.tco_io_base + TCO1_STS);
ret = val & (TCO_TIMEOUT | SW_TCO_SMI | TCO_INT_STS) ? 1 : 0;
g_assert(ret == 1);
qpci_io_writew(d.dev, d.tco_io_base + TCO1_STS, val);
g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_base + TCO1_STS), ==, 0);
qtest_end();
}
static void test_tco2_status_bits(void)
{
TestData d;
uint16_t ticks = 8;
uint16_t val;
int ret;
d.args = "-watchdog-action none";
test_init(&d);
stop_tco(&d);
clear_tco_status(&d);
reset_on_second_timeout(true);
set_tco_timeout(&d, ticks);
load_tco(&d);
start_tco(&d);
clock_step(ticks * TCO_TICK_NSEC * 2);
val = qpci_io_readw(d.dev, d.tco_io_base + TCO2_STS);
ret = val & (TCO_SECOND_TO_STS | TCO_BOOT_STS) ? 1 : 0;
g_assert(ret == 1);
qpci_io_writew(d.dev, d.tco_io_base + TCO2_STS, val);
g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_base + TCO2_STS), ==, 0);
qtest_end();
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
qtest_add_func("tco/defaults", test_tco_defaults);
qtest_add_func("tco/timeout/no_action", test_tco_timeout);
qtest_add_func("tco/timeout/no_action/max", test_tco_max_timeout);
qtest_add_func("tco/second_timeout/pause", test_tco_second_timeout_pause);
qtest_add_func("tco/second_timeout/reset", test_tco_second_timeout_reset);
qtest_add_func("tco/second_timeout/shutdown",
test_tco_second_timeout_shutdown);
qtest_add_func("tco/second_timeout/none", test_tco_second_timeout_none);
qtest_add_func("tco/counter", test_tco_ticks_counter);
qtest_add_func("tco/tco1_control/bits", test_tco1_control_bits);
qtest_add_func("tco/tco1_status/bits", test_tco1_status_bits);
qtest_add_func("tco/tco2_status/bits", test_tco2_status_bits);
return g_test_run();
}