ATI AC 97 Sounds (SB400) effort

[thedopefishlives]

Does anyone have time to look on the driver?

Yes, I just haven't had much motivation to do so yet. It's a hard project for me to dig into.

[Peter Gammelgaard]

Yes, I just haven't had much motivation to do so yet. It's a hard project for me to dig into.

 

Okay. It is good to hear someone is trying to do something..

[Geek]

My sound card has a device id of 4341 and vendor id of 1002, it shows up as realtek ac 97 audio in dxdiag. Is this is the device this driver is supposed to be for? Or else how can i get this working in 10.4.6?? Also is there any support for Atheros AR5005GS Wireless Adapter or Realtek RTL8139/810x under 10.4.6 I would really like to get these working. I know this is a little off topic but any help would be appreciated.

 

Thanks

[Elv13]

the driver actually dont work, and for atheros wireless, it work or it dont, for me it worked without any hack

[Geek]

Ya I realize this driver isnt finished yet...but i was wondering if this would or should work when its finished or should I be looking for something else that is already out there for my card? Thanks for your response

[zelda]

For Atheros use IO80211Family.kext from 10.4.5, works like a charm.

 

Tariq

[crackmaker]

hi to all...i m italian computer science student and i want help you to build the driver. Can sameone send me some documentation of actual work?

[Elv13]

look in previous page and make a search on the forum for link to apple doc

[Geek]

For Atheros use IO80211Family.kext from 10.4.5, works like a charm.

 

Tariq

 

Is there a special way to do this when i try to do a kextload it doesnt seem to work...im a lil bit of a n00b with this so please help i was able to extract the kext from the 10.4.5 package thou.

[Elv13]

you need to reapair permission and delete 2 file in /system/library related to extensions (there is only 2 anyway)

[thedopefishlives]

Okay. It is good to hear someone is trying to do something..

I understand.

For progress, I think I'm reasonably certain what's wrong: I don't think Mac OS X is triggering the interrupt handler. Like I posted earlier (before I got confused, hehe), I'm sure the hardware needs an interrupt in order to advance the hardware pointer and finish the sample - this is the function of the "ack" in the interrupt handler. If the handler doesn't fire, the ack doesn't get sent, and it simply hangs in an "indeterminate" state - the DMA is still "running", but nothing's happening because it's waiting for the interrupt to be serviced. The software then tries to shoot the next sample to the DMA, but it's flagged as still running, so the software kicks the bucket and returns to the user. End result: Infinite loop.

 

If someone who knows more about Mac OS interrupt handling than I do would care to look at the code and see where the handler has gone so wrong, I'm reasonably certain we'll get sound working.

[Geek]

you need to reapair permission and delete 2 file in /system/library related to extensions (there is only 2 anyway)

 

any idea which two files and the commands to do that?

[chrs2021]

the two files are extensions.mkext and extensions.kextcache. also the commands are chown and to use that command you have to type sudo chown -R root:wheel /system/Library/Extensions/filename.kext

[zelda]

thedopefishlives,

 

Have you seen this site ?

 

http://gemma.apple.com/documentation/Devic...000730-BBCCCFFA

 

 

Tariq

[odumso]

the two files are extensions.mkext and extensions.kextcache. also the commands are chown and to use that command you have to type sudo chown -R root:wheel /system/Library/Extensions/filename.kext

 

I did that but i keep getting the message that

 

Missing dependencies

 

com.apple.iokit.IONetworkingFamily

No Valid versions of this dependency can be found

 

I even took the IONetworking.kext from 10.4.5 hoping that would help but it didnt.

 

I know this is wayyy but this is the only place i can seem to find good help

 

Thanks

[thedopefishlives]

No, I haven't. And I also took a look at some code samples from other Apple resources, and the code from which our code was borrowed. I can't figure out WTH is going wrong.

[SkylerF]

I have the same conexant stuff and it works via ALSA in my Gentoo Linux install. Is there any chance of porting ALSA to Mac OS and using that?

[EdFlyer]

we're kinda already doing it. mac os x's version of ALSA is the AC97 framework.

 

so we've been working on getting the code from ALSA to work with AC97, the problem is that ALSA is in C while the AC97 framework is in OOP C++, hence our problem. We missed something when translating the code, but what we missed is not so obvious.

[SkylerF]

I see. Well let me know if I can help in anyway. I'm not much more than a novice programmer though

[EdFlyer]

download the most recent code posts, and study the other code, to see what is working, look at the alsa code for the ATI sound driver, understand what it does, and then look at our code to see what we missed.

[thedopefishlives]

Ed, I've tried a coupla dozen things I thought would fix it, and nothing worked. I'm thinking when I get some more time in OS X, I'm going to try a major rewrite of the interrupt-handling and DMA code - basically reorganizing everything so that I can understand the code flow and see where everything leads.

[EdFlyer]

Go for it, when your done with the reorganization, post it up.

[thedopefishlives]

Okay, so I scrapped the reorganization 'cuz I spotted a couple of what looked for all the world like bugs to me... That, and it was time-consuming and I need to design things out more before taking the plunge. But anyway, Ed, I noticed in your hwActivateConfiguration() function, you never activated the DMA... The statement read

if (data & ATI_REG_CMD_OUT_DMA_EN)
{
data |= ATI_REG_CMD_OUT_DMA_EN;
fMemBase->write32(ATI_REG_CMD, data);
}

I think the correct reading of the if statement should be

if (!(data & ATI_REG_CMD_OUT_DMA_EN))

but I could be wrong. In any event, I patched that, and now I get a kernel panic. If I was wrong about that fix, let me know; otherwise, here's the modified file, maybe you could play around with it and see if you can figure out why the system locks up. I can't figure out how to debug it.

AppleAC97AudioATIIXP.cpp.txt

[konaZ]

Okay, so I scrapped the reorganization 'cuz I spotted a couple of what looked for all the world like bugs to me... That, and it was time-consuming and I need to design things out more before taking the plunge. But anyway, Ed, I noticed in your hwActivateConfiguration() function, you never activated the DMA... The statement read

if (data & ATI_REG_CMD_OUT_DMA_EN)
{
data |= ATI_REG_CMD_OUT_DMA_EN;
fMemBase->write32(ATI_REG_CMD, data);
}

I think the correct reading of the if statement should be

if (!(data & ATI_REG_CMD_OUT_DMA_EN))

but I could be wrong. In any event, I patched that, and now I get a kernel panic. If I was wrong about that fix, let me know; otherwise, here's the modified file, maybe you could play around with it and see if you can figure out why the system locks up. I can't figure out how to debug it.

 

I tried that fixed file and osx started, but if i tried to listen music or any audio and whole osx crashed ( everything freezed )

 

i think that there is only little bug/bugs becouse now i saw Audio output device on Audio config.

i have osx version 10.4.6

 

keep up good work!

[thedopefishlives]

Well, I've been doing a lot of "little bugfixes" over the past day, and - well, I fixed the kernel panic/lockup, but I'm no closer to solving the hardware pointer problem than I was. I'm quite irked about it, but I'm at a loss for now. Maybe Ed or scousi can come up with a solution.