Can anyone help?

Can anyone help?

[Adrian McMenamin]

I cannot get aplay to work on my architecture (afaics anyway) eg

/ # aplay -D hw:0,0 /bin/busybox
aplay: pcm.c: 2119: snd_pcm_open: Assertion `pcmp && name' failed.
Aborted

(Nobody has explained to me what that error is - and my reading of the
code hasn't helped too much :-< )

So how can I test my driver code?

I can do things like this:

/ # cat /bin/busybox > /dev/snd/pcmC0D0p
ALSA /home/adrian/aica/aica/snd_card_aica.c:151: In snd_aicapcm_pcm_open
cat: Write Error: File descriptor in bad state
/ # Feb 10 00:01:02 dreamy user.warn kernel:
ALSA /home/adrian/aica/aica/snd_card_aica.c:151: In snd_aicapcm_pcm_open

But as the above fragment shows this opens the device file but not much
else (as I assume it has no automagic way of accessing the alsa
subsystem)

My driver code is at http://newgolddream.dyndns.info/repos btw



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Re: Can anyone help?

[Lee Revell]

On Thu, 2006-02-09 at 23:07 +0000, Adrian McMenamin wrote:
> I cannot get aplay to work on my architecture (afaics anyway) eg
> 
> / # aplay -D hw:0,0 /bin/busybox
> aplay: pcm.c: 2119: snd_pcm_open: Assertion `pcmp && name' failed.
> Aborted
> 
> (Nobody has explained to me what that error is - and my reading of the
> code hasn't helped too much :-< )
> 
> So how can I test my driver code?
> 
> I can do things like this:
> 
> / # cat /bin/busybox > /dev/snd/pcmC0D0p
> ALSA /home/adrian/aica/aica/snd_card_aica.c:151: In snd_aicapcm_pcm_open
> cat: Write Error: File descriptor in bad state
> / # Feb 10 00:01:02 dreamy user.warn kernel:
> ALSA /home/adrian/aica/aica/snd_card_aica.c:151: In snd_aicapcm_pcm_open
> 
> But as the above fragment shows this opens the device file but not much
> else (as I assume it has no automagic way of accessing the alsa
> subsystem)

It looks like you fail to set card->id in your __devinit routine.  This
field is used by the alsa-lib to find the right config file
in /usr/share/alsa/cards/.  For example if alsa-lib is supposed to use 
/usr/share/alsa/cards/Audigy2.conf set it to "Audigy2".

The ID is available in /proc/asound/cardX/id.

Here is the code from the emu10k1 driver:

        if (!*card->id && c->id) { 
                int i, n = 0; 
                strlcpy(card->id, c->id, sizeof(card->id));
                for (;;) {
                        for (i = 0; i < snd_ecards_limit; i++) {
                                if (snd_cards[i] && !strcmp(snd_cards[i]->id, card->id))
                                        break;
                        }
                        if (i >= snd_ecards_limit)
                                break;
                        n++;
                        if (n >= SNDRV_CARDS)
                                break;
                        snprintf(card->id, sizeof(card->id), "%s_%d", c->id, n);
                }
        }


Lee



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Re: Can anyone help?

[Adrian McMenamin]

On Thu, 2006-02-09 at 18:19 -0500, Lee Revell wrote:
> On Thu, 2006-02-09 at 23:07 +0000, Adrian McMenamin wrote:

> It looks like you fail to set card->id in your __devinit routine.  This
> field is used by the alsa-lib to find the right config file
> in /usr/share/alsa/cards/.  For example if alsa-lib is supposed to use 
> /usr/share/alsa/cards/Audigy2.conf set it to "Audigy2".
> 

I don't think that is it:

/ # modprobe snd_card_aica
ALSA /home/adrian/aica/aica/snd_card_aica.c:323: Probing for AICA device
ALSA /home/adrian/aica/aica/snd_card_aica.c:305: Loading aica firmware
ALSA /home/adrian/aica/aica/snd_card_aica.c:366: ALSA Driver for Yamaha
AICA Super Intelligent Sound Processor on slot 0
/ # cd /proc/asound
/proc/asound # ls
AICA     card0    cards    devices  modules  pcm      timers   version
/proc/asound # cd card0
/proc/asound/card0 # ls -l
-r--r--r--    1 root     root            0 Feb 10 00:39 id
dr-xr-xr-x    3 root     root            0 Feb 10 00:39 pcm0p
/proc/asound/card0 # cat id
AICA


There are no setup files, but the wiki says that aplay -D hw:0,0 ought
to get round that anyway. have I misunderstood that?





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Re: Can anyone help?

[Lee Revell]

On Thu, 2006-02-09 at 23:33 +0000, Adrian McMenamin wrote:
> 
> There are no setup files, but the wiki says that aplay -D hw:0,0 ought
> to get round that anyway. have I misunderstood that? 

Do you mean you have nothing under /usr/share/alsa?  You should try
installing alsa-lib and see what happens. The ALSA wikis are full of bad
information.

Lee



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Re: Can anyone help?

[Adrian McMenamin]

On Thu, 2006-02-09 at 18:39 -0500, Lee Revell wrote:
> On Thu, 2006-02-09 at 23:33 +0000, Adrian McMenamin wrote:
> > 
> > There are no setup files, but the wiki says that aplay -D hw:0,0 ought
> > to get round that anyway. have I misunderstood that? 
> 
> Do you mean you have nothing under /usr/share/alsa?  You should try
> installing alsa-lib and see what happens. The ALSA wikis are full of bad
> information.
> 
> Lee
> 

I have done this now - build and installed the library again: configured
thus:

CC=/home/adrian/buildroot/build_sh4/staging_dir/bin/sh4-linux-gcc
LDFLAGS=-L/tftpboot/192.168.61.55/lib ./configure --host=sh4-linux
--with-debug=yes --prefix=/tftpboot/192.168.61.55/usr

Unfortunately the install fails towards the end (this is being linked
against uclibc rather than glibc) - (see below - though )

But the basic problem remains the same:

/lib # aplay -L
aplay: pcm_list:280: snd_config_updte: Invalid argument
/lib # aplay -L
aplay: pcm_list:280: snd_config_update: Invalid argument
/lib # aplay -D hw:0,0
aplay: pcm.c: 2119: snd_pcm_open: Assertion `pcmp && name' failed.
Aborted


Though I have a populated /usr/share/alsa directory on the target
machine now... have I missed something?

Thanks for all the help.

Adrian



Install output...


/home/adrian/buildroot/build_sh4/staging_dir/bin/sh4-linux-gcc
-shared  .libs/sbase.o  -Wl,--rpath -Wl,/tftpboot/192.168.61.55/usr/lib
-L/tftpboot/192.168.61.55/lib -L/tftpboot/192.168.61.55/usr/lib -lasound
-Wl,-soname -Wl,smixer-sbase.so -o .libs/smixer-sbase.so
/home/adrian/buildroot/build_sh4/staging_dir/lib/gcc/sh4-linux-uclibc/3.4.2/../../../../sh4-linux-uclibc/bin/ld: cannot find /lib/libc.so.0
collect2: ld returned 1 exit status
libtool: install: error: relink `smixer-sbase.la' with the above command
before installing it
 /bin/sh ../../../libtool --mode=install /usr/bin/install -c
smixer-ac97.la /tftpboot/192.168.61.55/usr/lib/alsa-lib/smixer/smixer-ac97.la
libtool: install: warning: relinking `smixer-ac97.la'
(cd /home/adrian/alsa-lib-1.0.10/modules/mixer/simple; /bin/sh ../../../libtool --mode=relink /home/adrian/buildroot/build_sh4/staging_dir/bin/sh4-linux-gcc -g -O2 -W -Wall -g -O2 -L/tftpboot/192.168.61.55/lib -o smixer-ac97.la -rpath /tftpboot/192.168.61.55/usr/lib/alsa-lib/smixer -module -avoid-version ac97.lo sbasedl.lo ../../../src/libasound.la )
/home/adrian/buildroot/build_sh4/staging_dir/bin/sh4-linux-gcc
-shared  .libs/ac97.o .libs/sbasedl.o  -Wl,--rpath
-Wl,/tftpboot/192.168.61.55/usr/lib -L/tftpboot/192.168.61.55/lib
-L/tftpboot/192.168.61.55/usr/lib -lasound  -Wl,-soname
-Wl,smixer-ac97.so -o .libs/smixer-ac97.so
/home/adrian/buildroot/build_sh4/staging_dir/lib/gcc/sh4-linux-uclibc/3.4.2/../../../../sh4-linux-uclibc/bin/ld: cannot find /lib/libc.so.0
collect2: ld returned 1 exit status
libtool: install: error: relink `smixer-ac97.la' with the above command
before installing it
 /bin/sh ../../../libtool --mode=install /usr/bin/install -c
smixer-hda.la /tftpboot/192.168.61.55/usr/lib/alsa-lib/smixer/smixer-hda.la
libtool: install: warning: relinking `smixer-hda.la'
(cd /home/adrian/alsa-lib-1.0.10/modules/mixer/simple; /bin/sh ../../../libtool --mode=relink /home/adrian/buildroot/build_sh4/staging_dir/bin/sh4-linux-gcc -g -O2 -W -Wall -g -O2 -L/tftpboot/192.168.61.55/lib -o smixer-hda.la -rpath /tftpboot/192.168.61.55/usr/lib/alsa-lib/smixer -module -avoid-version hda.lo sbasedl.lo ../../../src/libasound.la )
/home/adrian/buildroot/build_sh4/staging_dir/bin/sh4-linux-gcc
-shared  .libs/hda.o .libs/sbasedl.o  -Wl,--rpath
-Wl,/tftpboot/192.168.61.55/usr/lib -L/tftpboot/192.168.61.55/lib
-L/tftpboot/192.168.61.55/usr/lib -lasound  -Wl,-soname
-Wl,smixer-hda.so -o .libs/smixer-hda.so
/home/adrian/buildroot/build_sh4/staging_dir/lib/gcc/sh4-linux-uclibc/3.4.2/../../../../sh4-linux-uclibc/bin/ld: cannot find /lib/libc.so.0
collect2: ld returned 1 exit status
libtool: install: error: relink `smixer-hda.la' with the above command
before installing it
make[4]: *** [install-pkglibLTLIBRARIES] Error 1
make[4]: Leaving directory
`/home/adrian/alsa-lib-1.0.10/modules/mixer/simple'
make[3]: *** [install-am] Error 2
make[3]: Leaving directory
`/home/adrian/alsa-lib-1.0.10/modules/mixer/simple'
make[2]: *** [install-recursive] Error 1
make[2]: Leaving directory `/home/adrian/alsa-lib-1.0.10/modules/mixer'
make[1]: *** [install-recursive] Error 1
make[1]: Leaving directory `/home/adrian/alsa-lib-1.0.10/modules'
make: *** [install-recursive] Error 1


NB the /lib directory on the target box is like this...

/lib # ls -l
drwxr-xr-x    2 root     root         4096 Jan 2:34 firmware
-rwsr-xr-x    1 root     root        17204 Jan 28 23:11
ld-uClibc-0.9.28.so
lrwxrwxrwx    1 root     root           19 Jan 28 23:11 ld-uClibc.so.0
-> ld-uClibc-0.9.28.so
-rw-r--r--    1 root     root        76028 Jan 28 23:11 libbusybox.so
lrwxrwxrwx    1 root     root           9 Jan 28 23:11 libbusybox.so.1
-> libbusybox.so.1.1.1
-rw-r--r--    1 root     root        76028 Jan 28 23:11
libbusybox.so.1.1
-rw-r--r--    1 root     root        76028 Jan 28 23:11
libbusybox.so.1.1.1
lrwxrwxrwx    1 root     root           19 Jan 28 23:11 libc.so.0 ->
libuClibc-0.9.28.so
-rw-r--r--    1 root     root         8888 Jan 28 23:11
libcrypt-0.9.28.so
lrwxrwxrwx    1 root     root           18 Jan 28 23:11 libcrypt.so.0 ->
libcrypt-0.9.28.so
-rw-r--r--    1 root     root         9036 Jan 28 23:11 libdl-0.9.28.so
lrwxrwxrwx    1 root     root           15 Jan 28 23:11 libdl.so.0 ->
libdl-0.9.28.so
lrwxrwxrwx    1 root     root           13 Jan 28 23:11 libgcc_s.so ->
libgcc_s.so.1
-rw-r--r--    1 root     root        62104 Jan 28 23:11 libgcc_s.so.1
-rw-r--r--    1 root     root        54136 Jan 28 23:11 libm-0.9.28.so
lrwxrwxrwx    1 root     root           14 Jan 28 23:11 libm.so.0 ->
libm-0.9.28.so
lrwxrwxrwx    1 root     root           15 Jan 28 23:11 libncurses.so ->
libncurses.so.5
lrwxrwxrwx    1 root     root           17 Jan 28 23:11 libncurses.so.5
-> libncurses.so.5.5
-rw-r--r--    1 root     root       271140 Jan 28 23:11
libncurses.so.5.5
-rw-r--r--    1 root     root         4784 Jan 28 23:11 libnsl-0.9.28.so
lrwxrwxrwx    1 root     root           16 Jan 28 23:11 libnsl.so.0 ->
libnsl-0.9.28.so
-rw-r--r--    1 root     root        73951 Jan 28 23:11
libpthread-0.9.28.so
lrwxrwxrwx    1 root     root           20 Jan 28 23:11 libpthread.so.0
-> libpthread-0.9.28.so
-rw-r--r--    1 root     root         4788 Jan 28 23:11
libresolv-0.9.28.so
lrwxrwxrwx    1 root     root           19 Jan 28 23:11 libresolv.so.0
-> libresolv-0.9.28.so
-rw-r--r--    1 root     root         4732 Jan 28 23:11 lirt-0.9.28.so
lrwxrwxrwx    1 root     root           15 Jan 28 23:11 librt.so.0 ->
librt-0.9.28.so
-rw-r--r--    1 root     ro        13076 Jan 28 23:11
libthread_db-0.9.28.so
lrwxrwxrwx    1 root     root         22 Jan 28 23:11 libthread_db.so.1
-> libthread_db-0.9.28.so
-rw-r--r--    1 root     root       289544 Jan 28 23:11
libuClibc-0.9.28.so
-rw-r--r--    1 root     root         4860 Jan 28 23:11
libutil-0.9.28.so
lrwxrwxrwx    1 root     root           17 Jan 28 23:11 libutil.so.0 ->
libutil-0.9.28.so
lrwxrwxrwx    1 root     root           13 Jan 28 23:11 libz.so ->
libz.so.1.2.3
lrwxrwxrwx    1 root     root           13 Jan 28 23:11 libz.so.1 ->
libz.so.1.2.3
-rw-r--r--    1 root     root        59276 Jan 28 23:11 libz.so.1.2.3
drwxr-xr-x    4 root     root         4096 Feb  7 21:37 modules





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Re: Can anyone help?

[Lee Revell]

On Mon, 2006-02-13 at 00:04 +0000, Adrian McMenamin wrote:
> But the basic problem remains the same:
> 
> /lib # aplay -L
> aplay: pcm_list:280: snd_config_updte: Invalid argument
> /lib # aplay -L
> aplay: pcm_list:280: snd_config_update: Invalid argument
> /lib # aplay -D hw:0,0
> aplay: pcm.c: 2119: snd_pcm_open: Assertion `pcmp && name' failed.
> Aborted
> 

You must be forgetting to initialize something in the driver.

Go over your driver source carefully with a known working driver
side-by-side.

Add more debug output to alsa-lib and your driver.

I really have no idea what's wrong.

Lee



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Re: Can anyone help?

[Lee Revell]

On Sun, 2006-02-12 at 19:25 -0500, Lee Revell wrote:
> On Mon, 2006-02-13 at 00:04 +0000, Adrian McMenamin wrote:
> > But the basic problem remains the same:
> > 
> > /lib # aplay -L
> > aplay: pcm_list:280: snd_config_updte: Invalid argument
> > /lib # aplay -L
> > aplay: pcm_list:280: snd_config_update: Invalid argument
> > /lib # aplay -D hw:0,0
> > aplay: pcm.c: 2119: snd_pcm_open: Assertion `pcmp && name' failed.
> > Aborted
> > 
> 
> You must be forgetting to initialize something in the driver.
> 
> Go over your driver source carefully with a known working driver
> side-by-side.
> 
> Add more debug output to alsa-lib and your driver.
> 
> I really have no idea what's wrong.
> 

Does /usr/share/alsa/alsa.conf exist?

Lee



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Re: Can anyone help?

[Lee Revell]

On Thu, 2006-02-09 at 23:07 +0000, Adrian McMenamin wrote:
> / # cat /bin/busybox > /dev/snd/pcmC0D0p
> ALSA /home/adrian/aica/aica/snd_card_aica.c:151: In
> snd_aicapcm_pcm_open
> cat: Write Error: File descriptor in bad state
> / # Feb 10 00:01:02 dreamy user.warn kernel:
> ALSA /home/adrian/aica/aica/snd_card_aica.c:151: In
> snd_aicapcm_pcm_open
> 
> But as the above fragment shows this opens the device file but not
> much
> else (as I assume it has no automagic way of accessing the alsa
> subsystem)
> 

Yes, "cat file > /dev/snd/pcmX" makes no sense, that's now how ALSA
works.  The only supported interface to these is via alsa-lib.

Lee



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Re: Can anyone help?

[Lee Revell]

On Thu, 2006-02-09 at 23:07 +0000, Adrian McMenamin wrote:
> I cannot get aplay to work on my architecture (afaics anyway) eg
> 
> / # aplay -D hw:0,0 /bin/busybox
> aplay: pcm.c: 2119: snd_pcm_open: Assertion `pcmp && name' failed.
> Aborted
> 

Try this patch:

--- /home/rlrevell/cvs/alsa/alsa-lib/src/pcm/pcm.c~	2006-01-12 20:00:54.000000000 -0500
+++ /home/rlrevell/cvs/alsa/alsa-lib/src/pcm/pcm.c	2006-02-12 19:27:08.000000000 -0500
@@ -2124,7 +2124,8 @@
 		 snd_pcm_stream_t stream, int mode)
 {
 	int err;
-	assert(pcmp && name);
+	assert(pcmp);
+        assert(name);
 	err = snd_config_update();
 	if (err < 0)
 		return err;

to see if it's the PCM handle or name that's not set.

Lee



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Re: Can anyone help?

[Adrian McMenamin]

On Sun, 2006-02-12 at 19:28 -0500, Lee Revell wrote:
> On Thu, 2006-02-09 at 23:07 +0000, Adrian McMenamin wrote:
> > I cannot get aplay to work on my architecture (afaics anyway) eg
> > 
> > / # aplay -D hw:0,0 /bin/busybox
> > aplay: pcm.c: 2119: snd_pcm_open: Assertion `pcmp && name' failed.
> > Aborted
> > 
> 
> Try this patch:
> 
[snip]
> to see if it's the PCM handle or name that's not set.
> 
> Lee



Get this now:
/usr/share/alsa # aplay -L
aplay: pcm_list:280: snd_config_update: Invalid argument
/usr/share/alsa # aplay -D hw:0,0
aplay: pcm.c: 2120: snd_pcm_open: Assertion `name' failed.
Aborted

alsa.conf is installed.


Thanks for the help, I'll return to this tomorrow - it's getting on for
1am here now :)



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