tests/qtest/ac97-test.c

   1 /*
   2  * QTest testcase for AC97
   3  *
   4  * Copyright (c) 2014 SUSE LINUX Products GmbH
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  */
   9
  10 #include "qemu/osdep.h"
  11 #include "libqtest.h"
  12 #include "qemu/module.h"
  13 #include "libqos/qgraph.h"
  14 #include "libqos/pci.h"
  15
  16 typedef struct QAC97 QAC97;
  17
  18 struct QAC97 {
  19     QOSGraphObject obj;
  20     QPCIDevice dev;
  21 };
  22
  23 static void *ac97_get_driver(void *obj, const char *interface)
  24 {
  25     QAC97 *ac97 = obj;
  26
  27     if (!g_strcmp0(interface, "pci-device")) {
  28         return &ac97->dev;
  29     }
  30
  31     fprintf(stderr, "%s not present in ac97\n", interface);
  32     g_assert_not_reached();
  33 }
  34
  35 static void *ac97_create(void *pci_bus, QGuestAllocator *alloc, void *addr)
  36 {
  37     QAC97 *ac97 = g_new0(QAC97, 1);
  38     QPCIBus *bus = pci_bus;
  39
  40     qpci_device_init(&ac97->dev, bus, addr);
  41     ac97->obj.get_driver = ac97_get_driver;
  42     return &ac97->obj;
  43 }
  44
  45 /*
  46  * This is rather a test of the audio subsystem and not an AC97 test. Test if
  47  * the audio subsystem can handle a 44100/1 upsample ratio. For some time this
  48  * used to trigger QEMU aborts.
  49  */
  50 static void ac97_playback_upsample(void *obj, void *data, QGuestAllocator *alloc)
  51 {
  52     QAC97 *ac97 = obj;
  53     QPCIDevice *dev = &ac97->dev;
  54     QPCIBar bar0;
  55
  56     qpci_device_enable(dev);
  57     bar0 = qpci_iomap(dev, 0, NULL);
  58     /* IOBAR0 offset 0x2c: PCM Front DAC Rate */
  59     qpci_io_writew(dev, bar0, 0x2c, 0x1);
  60 }
  61
  62 /*
  63  * This test is similar to the playback upsample test. QEMU shouldn't abort if
  64  * asked for a 1/44100 downsample ratio.
  65  */
  66 static void ac97_record_downsample(void *obj, void *data, QGuestAllocator *alloc)
  67 {
  68     QAC97 *ac97 = obj;
  69     QPCIDevice *dev = &ac97->dev;
  70     QPCIBar bar0;
  71
  72     qpci_device_enable(dev);
  73     bar0 = qpci_iomap(dev, 0, NULL);
  74     /* IOBAR0 offset 0x32: PCM L/R ADC Rate */
  75     qpci_io_writew(dev, bar0, 0x32, 0x1);
  76 }
  77
  78 static void ac97_register_nodes(void)
  79 {
  80     QOSGraphEdgeOptions opts = {
  81         .extra_device_opts = "addr=04.0,audiodev=snd0",
  82         .after_cmd_line = "-audiodev none,id=snd0"
  83                           ",out.frequency=44100,in.frequency=44100",
  84     };
  85     add_qpci_address(&opts, &(QPCIAddress) { .devfn = QPCI_DEVFN(4, 0) });
  86
  87     qos_node_create_driver("AC97", ac97_create);
  88     qos_node_produces("AC97", "pci-device");
  89     qos_node_consumes("AC97", "pci-bus", &opts);
  90
  91     qos_add_test("playback_upsample", "AC97", ac97_playback_upsample, NULL);
  92     qos_add_test("record_downsample", "AC97", ac97_record_downsample, NULL);
  93 }
  94
  95 libqos_init(ac97_register_nodes);