Re: [alsa-devel] hdmi sound rerouted?

Re: [alsa-devel] hdmi sound rerouted?

[Clemens Ladisch]

Dagg Stompler wrote:
>> daggs@gmx.com wrote:
>>> card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
>>> card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
>>> card 2: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
>>
>> The second one is called "Generic" because your kernel does not (yet)
>> know the hardware.
>>
>>> 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cedar HDMI Audio [Radeon HD 5400/6300 Series]
>>> 06:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] RV635 HDMI Audio [Radeon HD 3600 Series]
>>
>> These are the HDMI outputs of *two* graphics cards. The first one's
>> model is so new that the driver doesn't know it.
>
> the 3600 doesn't have hdmi socket so I think it is irrelevant for my issue.

The RV635 chip does support HDMI outputs (even if none are actually
connected), so the corresponding PCI device shows up here.

>>> If you update the kernel, you will get two devices named "HDA ATI HDMI".
>
> upgrade to where?

Oops.  Even the latest driver lacks the PCI IDs of many HDMI HDA devices
(aa50/aa58/aa60/aa68/aa80/aa88/aa90/aa98: Cypress/Juniper/Redwood/Cedar/
Cayman+Antilles/Barts/Turks/Caicos).

Alex, are these devices that require disabling snooping?


Regards,
Clemens

------------------------------------------------------------------------------
October Webinars: Code for Performance
Free Intel webinars can help you accelerate application performance.
Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from 
the latest Intel processors and coprocessors. See abstracts and register >
http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk

Re: [Alsa-user] hdmi sound rerouted?

[Deucher, Alexander]

> -----Original Message-----
> From: Clemens Ladisch [mailto:cladisch@googlemail.com]
> Sent: Saturday, September 28, 2013 6:33 PM
> To: Dagg Stompler
> Cc: alsa-user@lists.sourceforge.net; Deucher, Alexander; alsa-devel@alsa-
> project.org
> Subject: Re: [Alsa-user] [alsa-devel] hdmi sound rerouted?
> 
> Dagg Stompler wrote:
> >> daggs@gmx.com wrote:
> >>> card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
> >>> card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
> >>> card 2: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
> >>
> >> The second one is called "Generic" because your kernel does not (yet)
> >> know the hardware.
> >>
> >>> 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cedar
> HDMI Audio [Radeon HD 5400/6300 Series]
> >>> 06:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] RV635
> HDMI Audio [Radeon HD 3600 Series]
> >>
> >> These are the HDMI outputs of *two* graphics cards. The first one's
> >> model is so new that the driver doesn't know it.
> >
> > the 3600 doesn't have hdmi socket so I think it is irrelevant for my issue.
> 
> The RV635 chip does support HDMI outputs (even if none are actually
> connected), so the corresponding PCI device shows up here.
> 
> >>> If you update the kernel, you will get two devices named "HDA ATI
> HDMI".
> >
> > upgrade to where?
> 
> Oops.  Even the latest driver lacks the PCI IDs of many HDMI HDA devices
> (aa50/aa58/aa60/aa68/aa80/aa88/aa90/aa98:
> Cypress/Juniper/Redwood/Cedar/
> Cayman+Antilles/Barts/Turks/Caicos).
> 
> Alex, are these devices that require disabling snooping?

Sorry what does snooping mean in this context?

Alex

Re: [Alsa-user] hdmi sound rerouted?

[Clemens Ladisch]

Deucher, Alexander wrote:
>> Even the latest driver lacks the PCI IDs of many HDMI HDA devices
>> (aa50/aa58/aa60/aa68/aa80/aa88/aa90/aa98: Cypress/Juniper/Redwood/Cedar/
>> Cayman+Antilles/Barts/Turks/Caicos).
>>
>> Alex, are these devices that require disabling snooping?
>
> Sorry what does snooping mean in this context?

Coherent memory accesses, i.e., not setting bit 18 in the stream
descriptor control register; the HDA spec says:
| Traffic Priority (TP):  If set to a 1, the stream will be treated as
| preferred traffic if the underlying bus supports it.  If set to a 0,
| the traffic will be handled on a “best effort” basis.  [...]
| On PCI Express, for example, setting the TP bit to a 1 might cause
| the controller to generate non-snooped isochronous traffic, while
| a PCI implementation may ignore this bit.
| It is permitted to implement this bit as RO if there is no
| controllability available.

So "require" might be wrong, this is just an optimization.  Anyway,
devices up to aa48 use snooping, while from aaa0 (Tahiti XT) forward,
the driver sets TP (<http://git.kernel.org/linus/1815b34a6267>).
The question is, what was the first device to support this?


Regards,
Clemens
_______________________________________________
Alsa-devel mailing list
Alsa-devel@alsa-project.org
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

Re: [Alsa-user] hdmi sound rerouted?

[Takashi Iwai]

At Mon, 30 Sep 2013 02:23:22 +0000,
Deucher, Alexander wrote:
> 
> > -----Original Message-----
> > From: Clemens Ladisch [mailto:cladisch@googlemail.com]
> > Sent: Saturday, September 28, 2013 6:33 PM
> > To: Dagg Stompler
> > Cc: alsa-user@lists.sourceforge.net; Deucher, Alexander; alsa-devel@alsa-
> > project.org
> > Subject: Re: [Alsa-user] [alsa-devel] hdmi sound rerouted?
> > 
> > Dagg Stompler wrote:
> > >> daggs@gmx.com wrote:
> > >>> card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
> > >>> card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
> > >>> card 2: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
> > >>
> > >> The second one is called "Generic" because your kernel does not (yet)
> > >> know the hardware.
> > >>
> > >>> 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cedar
> > HDMI Audio [Radeon HD 5400/6300 Series]
> > >>> 06:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] RV635
> > HDMI Audio [Radeon HD 3600 Series]
> > >>
> > >> These are the HDMI outputs of *two* graphics cards. The first one's
> > >> model is so new that the driver doesn't know it.
> > >
> > > the 3600 doesn't have hdmi socket so I think it is irrelevant for my issue.
> > 
> > The RV635 chip does support HDMI outputs (even if none are actually
> > connected), so the corresponding PCI device shows up here.
> > 
> > >>> If you update the kernel, you will get two devices named "HDA ATI
> > HDMI".
> > >
> > > upgrade to where?
> > 
> > Oops.  Even the latest driver lacks the PCI IDs of many HDMI HDA devices
> > (aa50/aa58/aa60/aa68/aa80/aa88/aa90/aa98:
> > Cypress/Juniper/Redwood/Cedar/
> > Cayman+Antilles/Barts/Turks/Caicos).
> > 
> > Alex, are these devices that require disabling snooping?
> 
> Sorry what does snooping mean in this context?

Most of HD-audio controller have a snoop control, but the recent AMD
HDMI audio controller don't have the feature, thus the driver must use
the non-cached pages.  At least, PCI ID 1002:aaa0, aaa8 and aab0 are
known to require such.

Now the question is whether all new chips above (aa50,...) require the
same workaround, too.  Could you check this or forward the inquiry to
someone in AMD?

FWIW, such a chip needs to set AZX_DRIVER_ATIHDMI_NS bits in
driver_data of pci entries in sound/pci/hda/hda_intel.c.


thanks,

Takashi

Re: [Alsa-user] hdmi sound rerouted?

[Deucher, Alexander]

> -----Original Message-----
> From: Takashi Iwai [mailto:tiwai@suse.de]
> Sent: Monday, September 30, 2013 5:18 AM
> To: Deucher, Alexander
> Cc: Clemens Ladisch; Dagg Stompler; alsa-user@lists.sourceforge.net; alsa-
> devel@alsa-project.org
> Subject: Re: [alsa-devel] [Alsa-user] hdmi sound rerouted?
> 
> At Mon, 30 Sep 2013 02:23:22 +0000,
> Deucher, Alexander wrote:
> >
> > > -----Original Message-----
> > > From: Clemens Ladisch [mailto:cladisch@googlemail.com]
> > > Sent: Saturday, September 28, 2013 6:33 PM
> > > To: Dagg Stompler
> > > Cc: alsa-user@lists.sourceforge.net; Deucher, Alexander; alsa-
> devel@alsa-
> > > project.org
> > > Subject: Re: [Alsa-user] [alsa-devel] hdmi sound rerouted?
> > >
> > > Dagg Stompler wrote:
> > > >> daggs@gmx.com wrote:
> > > >>> card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
> > > >>> card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
> > > >>> card 2: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
> > > >>
> > > >> The second one is called "Generic" because your kernel does not (yet)
> > > >> know the hardware.
> > > >>
> > > >>> 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cedar
> > > HDMI Audio [Radeon HD 5400/6300 Series]
> > > >>> 06:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] RV635
> > > HDMI Audio [Radeon HD 3600 Series]
> > > >>
> > > >> These are the HDMI outputs of *two* graphics cards. The first one's
> > > >> model is so new that the driver doesn't know it.
> > > >
> > > > the 3600 doesn't have hdmi socket so I think it is irrelevant for my issue.
> > >
> > > The RV635 chip does support HDMI outputs (even if none are actually
> > > connected), so the corresponding PCI device shows up here.
> > >
> > > >>> If you update the kernel, you will get two devices named "HDA ATI
> > > HDMI".
> > > >
> > > > upgrade to where?
> > >
> > > Oops.  Even the latest driver lacks the PCI IDs of many HDMI HDA devices
> > > (aa50/aa58/aa60/aa68/aa80/aa88/aa90/aa98:
> > > Cypress/Juniper/Redwood/Cedar/
> > > Cayman+Antilles/Barts/Turks/Caicos).
> > >
> > > Alex, are these devices that require disabling snooping?
> >
> > Sorry what does snooping mean in this context?
> 
> Most of HD-audio controller have a snoop control, but the recent AMD
> HDMI audio controller don't have the feature, thus the driver must use
> the non-cached pages.  At least, PCI ID 1002:aaa0, aaa8 and aab0 are
> known to require such.
> 
> Now the question is whether all new chips above (aa50,...) require the
> same workaround, too.  Could you check this or forward the inquiry to
> someone in AMD?

According to our internal teams, disabling snooping is only required on the audio parts included in Evergreen and Northern Islands GPUs.  Older chips like R7xx (aa48) and newer chips like Southern Islands (aaa0) are able to use snooping.  I'm not real familiar with the audio portions of the GPUs so if you need further clarification, let me know.

Alex

> 
> FWIW, such a chip needs to set AZX_DRIVER_ATIHDMI_NS bits in
> driver_data of pci entries in sound/pci/hda/hda_intel.c.
> 
> 
> thanks,
> 
> Takashi

Re: [Alsa-user] hdmi sound rerouted?

[Takashi Iwai]

At Mon, 7 Oct 2013 13:36:24 +0000,
Deucher, Alexander wrote:
> 
> > -----Original Message-----
> > From: Takashi Iwai [mailto:tiwai@suse.de]
> > Sent: Monday, September 30, 2013 5:18 AM
> > To: Deucher, Alexander
> > Cc: Clemens Ladisch; Dagg Stompler; alsa-user@lists.sourceforge.net; alsa-
> > devel@alsa-project.org
> > Subject: Re: [alsa-devel] [Alsa-user] hdmi sound rerouted?
> > 
> > At Mon, 30 Sep 2013 02:23:22 +0000,
> > Deucher, Alexander wrote:
> > >
> > > > -----Original Message-----
> > > > From: Clemens Ladisch [mailto:cladisch@googlemail.com]
> > > > Sent: Saturday, September 28, 2013 6:33 PM
> > > > To: Dagg Stompler
> > > > Cc: alsa-user@lists.sourceforge.net; Deucher, Alexander; alsa-
> > devel@alsa-
> > > > project.org
> > > > Subject: Re: [Alsa-user] [alsa-devel] hdmi sound rerouted?
> > > >
> > > > Dagg Stompler wrote:
> > > > >> daggs@gmx.com wrote:
> > > > >>> card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
> > > > >>> card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
> > > > >>> card 2: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
> > > > >>
> > > > >> The second one is called "Generic" because your kernel does not (yet)
> > > > >> know the hardware.
> > > > >>
> > > > >>> 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cedar
> > > > HDMI Audio [Radeon HD 5400/6300 Series]
> > > > >>> 06:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] RV635
> > > > HDMI Audio [Radeon HD 3600 Series]
> > > > >>
> > > > >> These are the HDMI outputs of *two* graphics cards. The first one's
> > > > >> model is so new that the driver doesn't know it.
> > > > >
> > > > > the 3600 doesn't have hdmi socket so I think it is irrelevant for my issue.
> > > >
> > > > The RV635 chip does support HDMI outputs (even if none are actually
> > > > connected), so the corresponding PCI device shows up here.
> > > >
> > > > >>> If you update the kernel, you will get two devices named "HDA ATI
> > > > HDMI".
> > > > >
> > > > > upgrade to where?
> > > >
> > > > Oops.  Even the latest driver lacks the PCI IDs of many HDMI HDA devices
> > > > (aa50/aa58/aa60/aa68/aa80/aa88/aa90/aa98:
> > > > Cypress/Juniper/Redwood/Cedar/
> > > > Cayman+Antilles/Barts/Turks/Caicos).
> > > >
> > > > Alex, are these devices that require disabling snooping?
> > >
> > > Sorry what does snooping mean in this context?
> > 
> > Most of HD-audio controller have a snoop control, but the recent AMD
> > HDMI audio controller don't have the feature, thus the driver must use
> > the non-cached pages.  At least, PCI ID 1002:aaa0, aaa8 and aab0 are
> > known to require such.
> > 
> > Now the question is whether all new chips above (aa50,...) require the
> > same workaround, too.  Could you check this or forward the inquiry to
> > someone in AMD?
> 
> According to our internal teams, disabling snooping is only required on the audio parts included in Evergreen and Northern Islands GPUs.  Older chips like R7xx (aa48) and newer chips like Southern Islands (aaa0) are able to use snooping.  I'm not real familiar with the audio portions of the GPUs so if you need further clarification, let me know.

Thanks for the information.

Though, it's strange that the information doesn't match with what I've
heard (and also with what I've tested with a laptop).  I've heard that
it's Southern Island HDMI that needs the snoop-disablement.

Could you ask again whether it's really Evergreen / Nothern Islands?


thanks,

Takashi

> 
> Alex
> 
> > 
> > FWIW, such a chip needs to set AZX_DRIVER_ATIHDMI_NS bits in
> > driver_data of pci entries in sound/pci/hda/hda_intel.c.
> > 
> > 
> > thanks,
> > 
> > Takashi
> 
> 

Re: [alsa-devel] hdmi sound rerouted?

[Dagg Stompler]

> ----- Original Message -----
> From: Takashi Iwai
> Sent: 10/08/13 10:49 AM
> To: Deucher, Alexander
> Subject: Re: [alsa-devel] [Alsa-user]  hdmi sound rerouted?
> 
> At Mon, 7 Oct 2013 13:36:24 +0000,
> Deucher, Alexander wrote:
> > 
> > > -----Original Message-----
> > > From: Takashi Iwai [mailto:tiwai@suse.de]
> > > Sent: Monday, September 30, 2013 5:18 AM
> > > To: Deucher, Alexander
> > > Cc: Clemens Ladisch; Dagg Stompler; alsa-user@lists.sourceforge.net; alsa-
> > > devel@alsa-project.org
> > > Subject: Re: [alsa-devel] [Alsa-user] hdmi sound rerouted?
> > > 
> > > At Mon, 30 Sep 2013 02:23:22 +0000,
> > > Deucher, Alexander wrote:
> > > >
> > > > > -----Original Message-----
> > > > > From: Clemens Ladisch [mailto:cladisch@googlemail.com]
> > > > > Sent: Saturday, September 28, 2013 6:33 PM
> > > > > To: Dagg Stompler
> > > > > Cc: alsa-user@lists.sourceforge.net; Deucher, Alexander; alsa-
> > > devel@alsa-
> > > > > project.org
> > > > > Subject: Re: [Alsa-user] [alsa-devel] hdmi sound rerouted?
> > > > >
> > > > > Dagg Stompler wrote:
> > > > > >> daggs@gmx.com wrote:
> > > > > >>> card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
> > > > > >>> card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
> > > > > >>> card 2: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
> > > > > >>
> > > > > >> The second one is called "Generic" because your kernel does not (yet)
> > > > > >> know the hardware.
> > > > > >>
> > > > > >>> 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cedar
> > > > > HDMI Audio [Radeon HD 5400/6300 Series]
> > > > > >>> 06:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] RV635
> > > > > HDMI Audio [Radeon HD 3600 Series]
> > > > > >>
> > > > > >> These are the HDMI outputs of *two* graphics cards. The first one's
> > > > > >> model is so new that the driver doesn't know it.
> > > > > >
> > > > > > the 3600 doesn't have hdmi socket so I think it is irrelevant for my issue.
> > > > >
> > > > > The RV635 chip does support HDMI outputs (even if none are actually
> > > > > connected), so the corresponding PCI device shows up here.
> > > > >
> > > > > >>> If you update the kernel, you will get two devices named "HDA ATI
> > > > > HDMI".
> > > > > >
> > > > > > upgrade to where?
> > > > >
> > > > > Oops. Even the latest driver lacks the PCI IDs of many HDMI HDA devices
> > > > > (aa50/aa58/aa60/aa68/aa80/aa88/aa90/aa98:
> > > > > Cypress/Juniper/Redwood/Cedar/
> > > > > Cayman+Antilles/Barts/Turks/Caicos).
> > > > >
> > > > > Alex, are these devices that require disabling snooping?
> > > >
> > > > Sorry what does snooping mean in this context?
> > > 
> > > Most of HD-audio controller have a snoop control, but the recent AMD
> > > HDMI audio controller don't have the feature, thus the driver must use
> > > the non-cached pages. At least, PCI ID 1002:aaa0, aaa8 and aab0 are
> > > known to require such.
> > > 
> > > Now the question is whether all new chips above (aa50,...) require the
> > > same workaround, too. Could you check this or forward the inquiry to
> > > someone in AMD?
> > 
> > According to our internal teams, disabling snooping is only required on the audio parts included in Evergreen and Northern Islands GPUs. Older chips like R7xx (aa48) and newer chips like Southern Islands (aaa0) are able to use snooping. I'm not real familiar with the audio portions of the GPUs so if you need further clarification, let me know.
> 
> Thanks for the information.
> 
> Though, it's strange that the information doesn't match with what I've
> heard (and also with what I've tested with a laptop). I've heard that
> it's Southern Island HDMI that needs the snoop-disablement.
> 
> Could you ask again whether it's really Evergreen / Nothern Islands?
> 
> 
> thanks,
> 
> Takashi
> 
> > 
> > Alex
> > 
> > > 
> > > FWIW, such a chip needs to set AZX_DRIVER_ATIHDMI_NS bits in
> > > driver_data of pci entries in sound/pci/hda/hda_intel.c.
> > > 
> > > 
> > > thanks,
> > > 
> > > Takashi
> > 
> >

any updates on the matter guys?

------------------------------------------------------------------------------
October Webinars: Code for Performance
Free Intel webinars can help you accelerate application performance.
Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from 
the latest Intel processors and coprocessors. See abstracts and register >
http://pubads.g.doubleclick.net/gampad/clk?id=60135031&iu=/4140/ostg.clktrk
_______________________________________________
Alsa-user mailing list
Alsa-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/alsa-user