[alsa-devel] Alsa-driver compile fail on Ubuntu powerpc

[nguyen tritai]

Takashi,

The issue is still present with the latest alsa-driver.
Do you think that it's problem with 64 bit resource  with  pcm _mmap.
Here is dmesg :

TASK = cf8b70c0[1579] 'aplay' THREAD: cfab4000
GPR00: f0f0f0f4 cfab5e20 cf8b70c0 c0ae7040 00000000 4814b000 cfab2900
00000000
GPR08: 00000000 00004000 00000000 f0f0f0f0 20008448 1002557c 10020000
10020000
GPR16: 10010000 10024a58 00000008 10042050 100406d8 0ff80d50 cfa41d40
00000000
GPR24: 00000000 4814b000 00000000 cfa12948 00000000 4814b000 cfab2900
cfab5e38
NIP [d10d4814] snd_pcm_mmap_data_fault+0x78/0xec [snd_pcm]
LR [c0059fe8] __do_fault+0x64/0x428
Call Trace:
[cfab5e20] [c004b748] unlock_page+0x48/0x5c (unreliable)
[cfab5e30] [c0059fe8] __do_fault+0x64/0x428
[cfab5e80] [c000fd88] do_page_fault+0x2e8/0x540
[cfab5f40] [c000d2ec] handle_page_fault+0xc/0x80
Instruction dump:
80090028 2f800000 419e0074 7c0903a6 4e800421 2c030000 41820048 80030000
7c6b1b78 70094000 40820074 380b0004 <7d200028> 31290001 7d20012d 40a2fff4
---[ end trace 11885f716998bc3c ]---



Please show me where the issue is from and can I do something to fix it ?

Thanks
TaiNguyen


On Mon, Aug 18, 2008 at 6:58 PM, Takashi Iwai <tiwai at suse.de> wrote:

> At Mon, 18 Aug 2008 18:26:40 +0700,
> nguyen tritai wrote:
> >
> > Takashi,
> >
> > Now I can build and install driver for ca0106 sb Audigy but I got another
> > issue when play an example file.
> > >> aplay -vv child.wav
> > Playing WAVE '/root/child.wav' : Unsigned 8 bit, Rate 22050 Hz, Mono
> > Plug PCM: Rate conversion PCM (48000, sformat=U8)
> > Its setup is:
> >   stream       : PLAYBACK
> >   access       : RW_INTERLEAVED
> >   format       : U8
> >   subformat    : STD
> >   channels     : 1
> >   rate         : 22050
> >   exact rate   : 22050 (22050/1)
> >   msbits       : 8
> >   buffer_size  : 3763
> >   period_size  : 470
> >   period_time  : 21333
> >   tstamp_mode  : NONE
> >   period_step  : 1
> >   avail_min    : 470
> >   period_event : 0
> >   start_threshold  : 3763
> >   stop_threshold   : 3763
> >   silence_threshold: 0
> >   silence_size : 0
> >   boundary     : 493223936
> > Slave: Route conversion PCM (sformat=S32_LE)
> >   Transformation table:
> >     0 <- 0
> >     1 <- 0
> > Its setup is:
> >   stream       : PLAYBACK
> >   access       : MMAP_INTERLEAVED
> >   format       : U8
> >   subformat    : STD
> >   channels     : 1
> >   rate         : 48000
> >   exact rate   : 48000 (48000/1)
> >   msbits       : 8
> >   buffer_size  : 8192
> >   period_size  : 1024
> >   period_time  : 21333
> >   tstamp_mode  : NONE
> >   period_step  : 1
> >   avail_min    : 1024
> >   period_event : 0
> >   start_threshold  : 8192
> >   stop_threshold   : 8192
> >   silence_threshold: 0
> >   silence_size : 0
> >   boundary     : 1073741824
> > Slave: Direct Stream Mixing PCM
> > Its setup is:
> >   stream       : PLAYBACK
> >   access       : MMAP_INTERLEAVED
> >   format       : S32_LE
> >   subformat    : STD
> >   channels     : 2
> >   rate         : 48000
> >   exact rate   : 48000 (48000/1)
> >   msbits       : 32
> >   buffer_size  : 8192
> >   period_size  : 1024
> >   period_time  : 21333
> >   tstamp_mode  : NONE
> >   period_step  : 1
> >   avail_min    : 1024
> >   period_event : 0
> >   start_threshold  : 8192
> >   stop_threshold   : 8192
> >   silence_threshold: 0
> >   silence_size : 0
> >   boundary     : 1073741824
> > Hardware PCM card 0 'CA0106' device 0 subdevice 0
> > Its setup is:
> >   stream       : PLAYBACK
> >   access       : MMAP_INTERLEAVED
> >   format       : S32_LE
> >   subformat    : STD
> >   channels     : 2
> >   rate         : 48000
> >   exact rate   : 48000 (48000/1)
> >   msbits       : 32
> >   buffer_size  : 8192
> >   period_size  : 1024
> >   period_time  : 21333
> >   tstamp_mode  : ENABLE
> >   period_step  : 1
> >   avail_min    : 1024
> >   period_event : 0
> >   start_threshold  : 1
> >   stop_threshold   : 1073741824
> >   silence_threshold: 0
> >   silence_size : 1073741824
> >   boundary     : 1073741824
> > #########         +                                | 35%Segmentation
> fault
> >
> > Kernel dump message
> > >> dmesg
> > Unable to handle kernel paging request for data at address 0x00000000
> > Faulting instruction address: 0xc0033fd4
> > Oops: Kernel access of bad area, sig: 11 [#7]
> > Canyonlands
> > Modules linked in: snd_seq_midi snd_ca0106 snd_rawmidi snd_seq_oss
> > snd_seq_midi_event snd_seq snd_seq_device snd_ac97_codec snd_pcm_oss
> > snd_mixer_oss snd_pcm snd_timer snd_page_alloc snd ac97_bus
> > NIP: c0033fd4 LR: c004ac94 CTR: e901a6c8
> > REGS: dfbf3d40 TRAP: 0300   Tainted: G      D
>  (2.6.26-00015-gc0b03c1-dirty)
> > MSR: 00029000 <EE,ME>  CR: 48022444  XER: 20000000
> > DEAR: 00000000, ESR: 00000000
> > TASK = dfa57000[15245] 'aplay' THREAD: dfbf2000
> > GPR00: c004ac94 dfbf3df0 dfa57000 00000000 c0b2c180 00000000 3f10c149
> 00000000
> > GPR08: 00000000 00000000 9e370001 c030b10c 00000149 10025478 1000bd14
> bff7ab68
> > GPR16: c0320000 c030ae74 c0320000 00000000 00000000 00000000 00000000
> de14c340
> > GPR24: 4814b000 00000000 dfbf2000 de00c2c0 c0b2c180 00000000 00000000
> c0b2c180
> > NIP [c0033fd4] __wake_up_bit+0x10/0x40
> > LR [c004ac94] unlock_page+0x48/0x5c
> > Call Trace:
> > [dfbf3e10] [c004ac94] unlock_page+0x48/0x5c
> > [dfbf3e20] [c005a2d8] __do_fault+0x254/0x618
> > [dfbf3e80] [c000faf0] do_page_fault+0x2d8/0x518
> > [dfbf3f40] [c000d134] handle_page_fault+0xc/0x80
> > Instruction dump:
> > 7d6b4a14 800b0280 812b0278 20000020 7c630430 54631838 7c634a14 4e800020
> > 7c0802a6 9421ffe0 90810008 90010024 <80030000> 90a1000c 7f801800 419e0014
> > ---[ end trace a0b9d3bfbd44991b ]---
> >
> > I tried with another example file.wav but the problem is the same.
> > The issue seems from accessing memory.
> > I'm using AMCC 460EX board with distribution Ubuntu-7.04
>
> It's a known problem with non-coherent PPC architecture.
> Try my sound-unstable-2.6 git tree (or alsa-driver-unstable snapshot).
>
>
> Takashi
>