Re: [Qemu-devel] [PULL 1/7] audio: fix pc speaker init

[David Hildenbrand]

On 24.01.19 14:20, Gerd Hoffmann wrote:
> Get rid of the pcspk_state global, allow pc speaker
> be added using "-device isa-pcspk".
> 
> Signed-off-by: Gerd Hoffmann <address@hidden>
> Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
> Message-id: address@hidden
> ---
>  hw/audio/pcspk.c | 35 +++++++++++++++--------------------
>  1 file changed, 15 insertions(+), 20 deletions(-)
> 
> diff --git a/hw/audio/pcspk.c b/hw/audio/pcspk.c
> index 908696d483..b80a62ce90 100644
> --- a/hw/audio/pcspk.c
> +++ b/hw/audio/pcspk.c
> @@ -57,7 +57,6 @@ typedef struct {
>  } PCSpkState;
>  
>  static const char *s_spk = "pcspk";
> -static PCSpkState *pcspk_state;
>  
>  static inline void generate_samples(PCSpkState *s)
>  {
> @@ -111,22 +110,6 @@ static void pcspk_callback(void *opaque, int free)
>      }
>  }
>  
> -static int pcspk_audio_init(ISABus *bus)
> -{
> -    PCSpkState *s = pcspk_state;
> -    struct audsettings as = {PCSPK_SAMPLE_RATE, 1, AUD_FMT_U8, 0};
> -
> -    AUD_register_card(s_spk, &s->card);
> -
> -    s->voice = AUD_open_out(&s->card, s->voice, s_spk, s, pcspk_callback, 
> &as);
> -    if (!s->voice) {
> -        AUD_log(s_spk, "Could not open voice\n");
> -        return -1;
> -    }
> -
> -    return 0;
> -}
> -
>  static uint64_t pcspk_io_read(void *opaque, hwaddr addr,
>                                unsigned size)
>  {
> @@ -179,12 +162,20 @@ static void pcspk_initfn(Object *obj)
>  
>  static void pcspk_realizefn(DeviceState *dev, Error **errp)
>  {
> +    struct audsettings as = {PCSPK_SAMPLE_RATE, 1, AUD_FMT_U8, 0};
>      ISADevice *isadev = ISA_DEVICE(dev);
>      PCSpkState *s = PC_SPEAKER(dev);
>  
>      isa_register_ioport(isadev, &s->ioport, s->iobase);
>  
> -    pcspk_state = s;
> +    AUD_register_card(s_spk, &s->card);
> +
> +    s->voice = AUD_open_out(&s->card, s->voice, s_spk, s, pcspk_callback, 
> &as);
> +    if (!s->voice) {
> +        error_setg(errp, "Initializing audio voice failed");
> +        AUD_remove_card(&s->card);
> +        return;
> +    }
>  }
>  
>  static bool migrate_needed(void *opaque)
> @@ -221,8 +212,6 @@ static void pcspk_class_initfn(ObjectClass *klass, void 
> *data)
>      set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
>      dc->vmsd = &vmstate_spk;
>      dc->props = pcspk_properties;
> -    /* Reason: realize sets global pcspk_state */
> -    dc->user_creatable = false;
>  }
>  
>  static const TypeInfo pcspk_info = {
> @@ -233,6 +222,12 @@ static const TypeInfo pcspk_info = {
>      .class_init     = pcspk_class_initfn,
>  };
>  
> +static int pcspk_audio_init(ISABus *bus)
> +{
> +    isa_create_simple(bus, TYPE_PC_SPEAKER);
> +    return 0;
> +}
> +
>  static void pcspk_register(void)
>  {
>      type_register_static(&pcspk_info);
> 

I suddenly get (under fedora 28)

ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect:
Connection refused

alsa: Could not initialize DAC
alsa: Failed to open `default':
alsa: Reason: Connection refused
ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect:
Connection refused

alsa: Could not initialize DAC
alsa: Failed to open `default':
alsa: Reason: Connection refused
audio: Failed to create voice `pcspk'
qemu-system-x86_64: Initialization of device isa-pcspk failed:
Initializing audio voice failed


With

sudo x86_64-softmmu/qemu-system-x86_64 \
    --enable-kvm \
    -m 4G,maxmem=40G,slots=2 \
    -smp sockets=2,cores=2 \
    -numa node,nodeid=0,cpus=0-1 -numa node,nodeid=1,cpus=2-3 \
    -kernel /boot/vmlinuz-4.19.6-200.fc28.x86_64 \
    -append "console=ttyS0 rd.shell rd.luks=0 rd.lvm=0 rd.md=0 rd.dm=0" \
    -initrd /boot/initramfs-4.19.6-200.fc28.x86_64.img \
    -machine pc,nvdimm \
    -nographic \
    -nodefaults \
    -chardev stdio,id=serial \
    --trace events=to_trace \
    -device isa-serial,chardev=serial \
    -chardev socket,id=monitor,path=/var/tmp/monitor,server,nowait \
    -mon chardev=monitor,mode=readline


Could this be related to this patch? (or is maybe something about my
system messed up? will try rebooting, but other audio - e.g. via firefox
- works fine)

-- 

Thanks,

David / dhildenb