Yaya48
cf256aa081
Upstream: https://gitlab.com/qemu-project/qemu.git Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475
135 lines
4.0 KiB
C
135 lines
4.0 KiB
C
/*
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* QTest testcase for USB xHCI controller
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*
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* Copyright (c) 2014 HUAWEI TECHNOLOGIES CO., LTD.
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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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#include "qemu/osdep.h"
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#include "libqtest-single.h"
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#include "libqos/usb.h"
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#include "qobject/qdict.h"
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static void wait_device_deleted_event(QTestState *qtest, const char *id)
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{
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QDict *resp, *data;
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const char *device;
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/*
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* Other devices might get removed along with the removed device. Skip
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* these. The device of interest will be the last one.
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*/
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for (;;) {
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resp = qtest_qmp_eventwait_ref(qtest, "DEVICE_DELETED");
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data = qdict_get_qdict(resp, "data");
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device = data ? qdict_get_try_str(data, "device") : NULL;
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if (device && !strcmp(device, id)) {
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qobject_unref(resp);
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break;
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}
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qobject_unref(resp);
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}
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}
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/*
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* Regression test for the xHCI-PCI "host" strong-link reference cycle.
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*
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* The xHCI PCI wrapper embeds an xhci-core child whose strong "host" link
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* points back at the PCI device, forming a refcount cycle. If
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* usb_xhci_pci_exit() does not break that cycle, the device's refcount never
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* reaches 0 on unplug, device_finalize() never runs, and therefore the
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* DEVICE_DELETED event (emitted from device_finalize()) is never sent.
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*
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* This test hot-plugs an xHCI controller into an ACPI-hotpluggable bus,
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* requests its removal and waits for DEVICE_DELETED. Without the fix the event
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* is never delivered (device_finalize() is blocked), so the test would
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* hang/time out.
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*/
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static void test_xhci_unplug_finalize(void)
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{
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QTestState *qtest;
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const char *arch = qtest_get_arch();
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if (strcmp(arch, "i386") != 0 && strcmp(arch, "x86_64") != 0) {
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g_test_skip("Test only runs on x86 (ACPI PCI hotplug)");
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return;
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}
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if (!qtest_has_device("nec-usb-xhci")) {
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g_test_skip("Device nec-usb-xhci not available");
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return;
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}
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qtest = qtest_initf("-machine pc");
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qtest_qmp_device_add(qtest, "nec-usb-xhci", "xhci-finalize", "{}");
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/*
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* Request device removal. As the guest is not running, the unplug request
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* won't be processed until the next system reset, which performs the
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* removal and triggers device_finalize() (and thus DEVICE_DELETED).
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*/
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qtest_qmp_device_del_send(qtest, "xhci-finalize");
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qtest_system_reset_nowait(qtest);
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wait_device_deleted_event(qtest, "xhci-finalize");
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qtest_quit(qtest);
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}
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static void test_xhci_hotplug(void)
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{
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usb_test_hotplug(global_qtest, "xhci", "1", NULL);
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}
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static void test_usb_uas_hotplug(void)
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{
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QTestState *qts = global_qtest;
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qtest_qmp_device_add(qts, "usb-uas", "uas", "{}");
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qtest_qmp_device_add(qts, "scsi-hd", "scsihd", "{'drive': 'drive0'}");
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/* TODO:
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UAS HBA driver in libqos, to check that
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added disk is visible after BUS rescan
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*/
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qtest_qmp_device_del(qts, "scsihd");
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qtest_qmp_device_del(qts, "uas");
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}
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static void test_usb_ccid_hotplug(void)
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{
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QTestState *qts = global_qtest;
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qtest_qmp_device_add(qts, "usb-ccid", "ccid", "{}");
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qtest_qmp_device_del(qts, "ccid");
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/* check the device can be added again */
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qtest_qmp_device_add(qts, "usb-ccid", "ccid", "{}");
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qtest_qmp_device_del(qts, "ccid");
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}
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int main(int argc, char **argv)
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{
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int ret;
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g_test_init(&argc, &argv, NULL);
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qtest_add_func("/xhci/pci/hotplug", test_xhci_hotplug);
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qtest_add_func("/xhci/pci/unplug/finalize", test_xhci_unplug_finalize);
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if (qtest_has_device("usb-uas")) {
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qtest_add_func("/xhci/pci/hotplug/usb-uas", test_usb_uas_hotplug);
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}
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if (qtest_has_device("usb-ccid")) {
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qtest_add_func("/xhci/pci/hotplug/usb-ccid", test_usb_ccid_hotplug);
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}
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qtest_start("-device nec-usb-xhci,id=xhci"
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" -drive id=drive0,if=none,file=null-co://,"
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"file.read-zeroes=on,format=raw");
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ret = g_test_run();
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qtest_end();
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return ret;
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}
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