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031616cd75
Test if the audio subsystem can handle extreme up- and down- sampling ratios like 44100/1 and 1/44100. For some time these used to trigger QEMU aborts. The test was taken from https://gitlab.com/qemu-project/qemu/-/issues/71 where it was used to demonstrate a very different issue. Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> Message-Id: <20230520113313.5177-1-vr_qemu@t-online.de> Signed-off-by: Thomas Huth <thuth@redhat.com>
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/*
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* QTest testcase for AC97
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*
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* Copyright (c) 2014 SUSE LINUX Products GmbH
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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.h"
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#include "qemu/module.h"
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#include "libqos/qgraph.h"
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#include "libqos/pci.h"
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typedef struct QAC97 QAC97;
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struct QAC97 {
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QOSGraphObject obj;
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QPCIDevice dev;
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};
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static void *ac97_get_driver(void *obj, const char *interface)
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{
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QAC97 *ac97 = obj;
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if (!g_strcmp0(interface, "pci-device")) {
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return &ac97->dev;
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}
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fprintf(stderr, "%s not present in ac97\n", interface);
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g_assert_not_reached();
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}
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static void *ac97_create(void *pci_bus, QGuestAllocator *alloc, void *addr)
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{
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QAC97 *ac97 = g_new0(QAC97, 1);
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QPCIBus *bus = pci_bus;
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qpci_device_init(&ac97->dev, bus, addr);
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ac97->obj.get_driver = ac97_get_driver;
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return &ac97->obj;
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}
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/*
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* This is rather a test of the audio subsystem and not an AC97 test. Test if
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* the audio subsystem can handle a 44100/1 upsample ratio. For some time this
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* used to trigger QEMU aborts.
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*/
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static void ac97_playback_upsample(void *obj, void *data, QGuestAllocator *alloc)
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{
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QAC97 *ac97 = obj;
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QPCIDevice *dev = &ac97->dev;
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QPCIBar bar0;
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qpci_device_enable(dev);
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bar0 = qpci_iomap(dev, 0, NULL);
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/* IOBAR0 offset 0x2c: PCM Front DAC Rate */
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qpci_io_writew(dev, bar0, 0x2c, 0x1);
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}
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/*
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* This test is similar to the playback upsample test. QEMU shouldn't abort if
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* asked for a 1/44100 downsample ratio.
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*/
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static void ac97_record_downsample(void *obj, void *data, QGuestAllocator *alloc)
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{
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QAC97 *ac97 = obj;
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QPCIDevice *dev = &ac97->dev;
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QPCIBar bar0;
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qpci_device_enable(dev);
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bar0 = qpci_iomap(dev, 0, NULL);
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/* IOBAR0 offset 0x32: PCM L/R ADC Rate */
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qpci_io_writew(dev, bar0, 0x32, 0x1);
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}
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static void ac97_register_nodes(void)
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{
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QOSGraphEdgeOptions opts = {
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.extra_device_opts = "addr=04.0,audiodev=snd0",
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.after_cmd_line = "-audiodev none,id=snd0"
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",out.frequency=44100,in.frequency=44100",
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};
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add_qpci_address(&opts, &(QPCIAddress) { .devfn = QPCI_DEVFN(4, 0) });
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qos_node_create_driver("AC97", ac97_create);
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qos_node_produces("AC97", "pci-device");
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qos_node_consumes("AC97", "pci-bus", &opts);
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qos_add_test("playback_upsample", "AC97", ac97_playback_upsample, NULL);
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qos_add_test("record_downsample", "AC97", ac97_record_downsample, NULL);
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}
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libqos_init(ac97_register_nodes);
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