qtest: new test for wdt_ib700

Since the "pause" watchdog action had a regression and it went
unnoticed for a while, let's add a test for it.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

tests/Makefile

@@ -141,6 +141,8 @@ check-qtest-i386-y += tests/i440fx-test$(EXESUF)
 check-qtest-i386-y += tests/fw_cfg-test$(EXESUF)
 check-qtest-i386-y += tests/blockdev-test$(EXESUF)
 check-qtest-i386-y += tests/qdev-monitor-test$(EXESUF)
+check-qtest-i386-y += tests/wdt_ib700-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 += $(gcov-files-pci-y)
 check-qtest-i386-y += tests/vmxnet3-test$(EXESUF)
@@ -311,6 +313,7 @@ tests/pcnet-test$(EXESUF): tests/pcnet-test.o
 tests/eepro100-test$(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$(EXESUF): tests/wdt_ib700-test.o
 tests/virtio-balloon-test$(EXESUF): tests/virtio-balloon-test.o
 tests/virtio-blk-test$(EXESUF): tests/virtio-blk-test.o
 tests/virtio-net-test$(EXESUF): tests/virtio-net-test.o

tests/wdt_ib700-test.c

+/*
+ * QTest testcase for the IB700 watchdog
+ *
+ * Copyright (c) 2014 Red Hat, Inc.
+ *
+ * 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 "libqtest.h"
+#include "qemu/osdep.h"
+
+#define NS_PER_SEC 1000000000ULL
+
+static void qmp_check_no_event(void)
+{
+    QDict *resp = qmp("{'execute':'query-status'}");
+    g_assert(qdict_haskey(resp, "return"));
+    QDECREF(resp);
+}
+
+static QDict *qmp_get_event(const char *name)
+{
+    QDict *event = qmp("");
+    QDict *data;
+    g_assert(qdict_haskey(event, "event"));
+    g_assert(!strcmp(qdict_get_str(event, "event"), name));
+
+    if (qdict_haskey(event, "data")) {
+        data = qdict_get_qdict(event, "data");
+        QINCREF(data);
+    } else {
+        data = NULL;
+    }
+
+    QDECREF(event);
+    return data;
+}
+
+static QDict *ib700_program_and_wait(QTestState *s)
+{
+    clock_step(NS_PER_SEC * 40);
+    qmp_check_no_event();
+
+    /* 2 second limit */
+    outb(0x443, 14);
+
+    /* Ping */
+    clock_step(NS_PER_SEC);
+    qmp_check_no_event();
+    outb(0x443, 14);
+
+    /* Disable */
+    clock_step(NS_PER_SEC);
+    qmp_check_no_event();
+    outb(0x441, 1);
+    clock_step(3 * NS_PER_SEC);
+    qmp_check_no_event();
+
+    /* Enable and let it fire */
+    outb(0x443, 13);
+    clock_step(3 * NS_PER_SEC);
+    qmp_check_no_event();
+    clock_step(2 * NS_PER_SEC);
+    return qmp_get_event("WATCHDOG");
+}
+
+
+static void ib700_pause(void)
+{
+    QDict *d;
+    QTestState *s = qtest_start("-watchdog-action pause -device ib700");
+    qtest_irq_intercept_in(s, "ioapic");
+    d = ib700_program_and_wait(s);
+    g_assert(!strcmp(qdict_get_str(d, "action"), "pause"));
+    QDECREF(d);
+    d = qmp_get_event("STOP");
+    QDECREF(d);
+    qtest_end();
+}
+
+static void ib700_reset(void)
+{
+    QDict *d;
+    QTestState *s = qtest_start("-watchdog-action reset -device ib700");
+    qtest_irq_intercept_in(s, "ioapic");
+    d = ib700_program_and_wait(s);
+    g_assert(!strcmp(qdict_get_str(d, "action"), "reset"));
+    QDECREF(d);
+    d = qmp_get_event("RESET");
+    QDECREF(d);
+    qtest_end();
+}
+
+static void ib700_shutdown(void)
+{
+    QDict *d;
+    QTestState *s = qtest_start("-watchdog-action reset -no-reboot -device ib700");
+    qtest_irq_intercept_in(s, "ioapic");
+    d = ib700_program_and_wait(s);
+    g_assert(!strcmp(qdict_get_str(d, "action"), "reset"));
+    QDECREF(d);
+    d = qmp_get_event("SHUTDOWN");
+    QDECREF(d);
+    qtest_end();
+}
+
+static void ib700_none(void)
+{
+    QDict *d;
+    QTestState *s = qtest_start("-watchdog-action none -device ib700");
+    qtest_irq_intercept_in(s, "ioapic");
+    d = ib700_program_and_wait(s);
+    g_assert(!strcmp(qdict_get_str(d, "action"), "none"));
+    QDECREF(d);
+    qtest_end();
+}
+
+int main(int argc, char **argv)
+{
+    int ret;
+
+    g_test_init(&argc, &argv, NULL);
+    qtest_add_func("/wdt_ib700/pause", ib700_pause);
+    qtest_add_func("/wdt_ib700/reset", ib700_reset);
+    qtest_add_func("/wdt_ib700/shutdown", ib700_shutdown);
+    qtest_add_func("/wdt_ib700/none", ib700_none);
+
+    ret = g_test_run();
+
+    return ret;
+}