Re: [alsa-devel] [Alsa-user] 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?
Regards, Clemens
-----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
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
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
-----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
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
participants (4)
-
Clemens Ladisch -
Clemens Ladisch -
Deucher, Alexander -
Takashi Iwai