tests/qtest: add a test case for pvpanic-pci

Add a test case for pvpanic-pci device. The scenario is the same as pvpanic
ISA device, but is using the PCI bus.

Signed-off-by: Mihai Carabas <mihai.carabas@oracle.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Mihai Carabas <mihai.carabas@oracle.com>
[PMM: added code to free dev and pcibus, which the oss-fuzz
 build otherwise complains about as a leak]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

tests/qtest/meson.build

@@ -34,6 +34,7 @@ qtests_i386 = \
    config_all_devices.has_key('CONFIG_ISA_IPMI_BT') ? ['ipmi-bt-test'] : []) +              \
   (config_all_devices.has_key('CONFIG_WDT_IB700') ? ['wdt_ib700-test'] : []) +              \
   (config_all_devices.has_key('CONFIG_PVPANIC_ISA') ? ['pvpanic-test'] : []) +              \
+  (config_all_devices.has_key('CONFIG_PVPANIC_PCI') ? ['pvpanic-pci-test'] : []) +          \
   (config_all_devices.has_key('CONFIG_HDA') ? ['intel-hda-test'] : []) +                    \
   (config_all_devices.has_key('CONFIG_I82801B11') ? ['i82801b11-test'] : []) +             \
   (config_all_devices.has_key('CONFIG_IOH3420') ? ['ioh3420-test'] : []) +                  \

tests/qtest/pvpanic-pci-test.c

@@ -0,0 +1,98 @@
+/*
+ * QTest testcase for PV Panic PCI device
+ *
+ * Copyright (C) 2020 Oracle
+ *
+ * Authors:
+ *     Mihai Carabas <mihai.carabas@oracle.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 "qemu/osdep.h"
+#include "libqos/libqtest.h"
+#include "qapi/qmp/qdict.h"
+#include "libqos/pci.h"
+#include "libqos/pci-pc.h"
+#include "hw/pci/pci_regs.h"
+
+static void test_panic_nopause(void)
+{
+    uint8_t val;
+    QDict *response, *data;
+    QTestState *qts;
+    QPCIBus *pcibus;
+    QPCIDevice *dev;
+    QPCIBar bar;
+
+    qts = qtest_init("-device pvpanic-pci,addr=04.0 -action panic=none");
+    pcibus = qpci_new_pc(qts, NULL);
+    dev = qpci_device_find(pcibus, QPCI_DEVFN(0x4, 0x0));
+    qpci_device_enable(dev);
+    bar = qpci_iomap(dev, 0, NULL);
+
+    qpci_memread(dev, bar, 0, &val, sizeof(val));
+    g_assert_cmpuint(val, ==, 3);
+
+    val = 1;
+    qpci_memwrite(dev, bar, 0, &val, sizeof(val));
+
+    response = qtest_qmp_eventwait_ref(qts, "GUEST_PANICKED");
+    g_assert(qdict_haskey(response, "data"));
+    data = qdict_get_qdict(response, "data");
+    g_assert(qdict_haskey(data, "action"));
+    g_assert_cmpstr(qdict_get_str(data, "action"), ==, "run");
+    qobject_unref(response);
+
+    g_free(dev);
+    qpci_free_pc(pcibus);
+    qtest_quit(qts);
+}
+
+static void test_panic(void)
+{
+    uint8_t val;
+    QDict *response, *data;
+    QTestState *qts;
+    QPCIBus *pcibus;
+    QPCIDevice *dev;
+    QPCIBar bar;
+
+    qts = qtest_init("-device pvpanic-pci,addr=04.0 -action panic=pause");
+    pcibus = qpci_new_pc(qts, NULL);
+    dev = qpci_device_find(pcibus, QPCI_DEVFN(0x4, 0x0));
+    qpci_device_enable(dev);
+    bar = qpci_iomap(dev, 0, NULL);
+
+    qpci_memread(dev, bar, 0, &val, sizeof(val));
+    g_assert_cmpuint(val, ==, 3);
+
+    val = 1;
+    qpci_memwrite(dev, bar, 0, &val, sizeof(val));
+
+    response = qtest_qmp_eventwait_ref(qts, "GUEST_PANICKED");
+    g_assert(qdict_haskey(response, "data"));
+    data = qdict_get_qdict(response, "data");
+    g_assert(qdict_haskey(data, "action"));
+    g_assert_cmpstr(qdict_get_str(data, "action"), ==, "pause");
+    qobject_unref(response);
+
+    g_free(dev);
+    qpci_free_pc(pcibus);
+    qtest_quit(qts);
+}
+
+int main(int argc, char **argv)
+{
+    int ret;
+
+    g_test_init(&argc, &argv, NULL);
+    qtest_add_func("/pvpanic-pci/panic", test_panic);
+    qtest_add_func("/pvpanic-pci/panic-nopause", test_panic_nopause);
+
+    ret = g_test_run();
+
+    return ret;
+}