Date: Sat, 30 Jul 2016 10:56:38 +0300 From: Alex Teaca <ionutalex.teaca@gmail.com> To: soc-status@freebsd.org Subject: Re: [GSOC 2016] HD Audio Emulation For Bhyve Status Message-ID: <CAP0yNupBJWGvdO4C7_L7yjWbtsVC0EtwN3d9qa7ewmnWYD08CQ@mail.gmail.com> In-Reply-To: <CAP0yNurOFWzEN3oxewsTPMrFV6EzxKnHEp45XPpBdgd8jk7LuQ@mail.gmail.com> References: <CAP0yNupzDmLnaEPLL91FEf72V_LRRasD2FpexmkF6NaGrtt1kw@mail.gmail.com> <CAP0yNuoUmU_Xhj5sY-L-G--_PkzgWWNQ-5D7ub-Jn6jvM_EhJg@mail.gmail.com> <CAP0yNurOFWzEN3oxewsTPMrFV6EzxKnHEp45XPpBdgd8jk7LuQ@mail.gmail.com>
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Hi, Meanwhile I have added some small functionalities in order to make it work with Linux and Windows virtual machines. The difficult part was rather to find the right setup to run Windows properly. Now, it works playing audio on FreeBSD, Linux (ubuntu 14.04 server) and Windows 2k8 server guests. One limitation I still have is the necessity to use hw.snd.latency=0 when play with Windows. I am working at the input features in order to capture audio. Thanks, Alex On Sun, Jun 26, 2016 at 8:49 PM, Alex Teaca <ionutalex.teaca@gmail.com> wrote: > Hi, > > Short update. > > - implement the stream management operations (stream_start, stream_stop, > hda stream interrupts, hda_transfer) in the hda and hda codec > - create one thread per stream in the initialization of the codec which > runs as long as the stream is started and waits on a conditional variable > when the stream is stopped. > - implement the Audio Player used to play samples to the sound device > (/dev/dsp) (3 functions: audio_init, audio_set_params and audio_playback) > > Results: manage to play music in a bhyve virtual machine :) > > Thanks, > Alex > > > On Fri, Jun 17, 2016 at 9:52 PM, Alex Teaca <ionutalex.teaca@gmail.com> > wrote: > >> Hi, >> >> I added a pin widget (Line-out) and now the Audio Output Widget is >> enabled. The codec is installed as pcm0: >> root@vm_hda:~ # cat /dev/sndstat >> Installed devices: >> pcm0: <Generic (0x8086) (Analog Line-out)> (play) default >> >> The next step is to implement the stream management operations such as >> start_stream and stop_stream. I have taken a look on the Stream management >> chapter from the HDA specification in order to get familiar with these >> operations and study the driver implementation (hdaa_audio_setup, >> hdac_stream_start, hdac_stream_stop) to see what registers are programmed >> and what commands are sent to the codec. >> >> Together with Peter and Alexander we chose the design of the interaction >> between the HDA controller, codecs and Audio player regarding the stream >> management. >> >> Thanks, >> Alex >> >> >> On Mon, Jun 6, 2016 at 10:01 PM, Alex Teaca <ionutalex.teaca@gmail.com> >> wrote: >> >>> Hi, >>> >>> Here is the status with the features I have implemented so far. >>> >>> - set up the HDA controller as a PCI device in bhyve >>> - design the layout of registers and implement the read and write >>> access to the registers >>> - implement the CORB and RIRB mechanisms in order to get commands from >>> driver and respond back >>> - add the hdac_codec module and implement the interface of >>> communication between the hda controller and codec >>> - describe the hda codec parameters for each node (ROOT, FG and AUDIO >>> OUTPUT) >>> - handle the GET_PARAMETER verb >>> >>> At the moment there is only one widget: the Autio Output Widget and the >>> hda driver has disabled it because it does not find any Pin widget. >>> >>> The plan is to add the Pin output widget and to continue with the >>> streams data in order to play some samples. >>> >>> Thanks, >>> Alex >>> >>> >> >
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