Hi,
I am at my wits end trying to make a Opti82C931 chip based card
(MED 3931 ver.2.0) work on my Linux box. I have it working on
my Wn95 and NT 4.0 OSs. I even had it working with OSS's mad16 driver.
To be honest, I thing something is amiss or buggy here because ISA PnP
doesn't seem to work as it should.
I have a Mandrake 8.1 installation, I compiled a new kernel with:
1. IsaPnP and generic PNP support
2. Sound kernel
3. No OSS modules or drivers were compiled into the kernel (I actually
removed these, period)
4. I compiled with symbol versioning
As for the Alsa stuff I:
1. Compiled the drivers with the following options:
./configure --with-isapnp=no \
--with-sequencer=yes \
--with-oss=yes \
--with-debug=full
2. I also made & installed the libraries, tools and utilities (in that
order).
3. I followed the instructions in INSTALL to no avail.
Here is what I have:
/etc/modules.conf-----------------
# ALSA: native device number
alias char-major-116 snd
# OSS/Free portion: kernel soundcore muliplexer + OSS compatibility
alias char-major-14 soundcore
# ALSA: toplevel soundcard
alias snd-card-0 snd-opti93x
# OSS/Free portion: OSS support
alias sound-slot-0 snd-card-0
# /proc/isapnp
# snd_fm_port - port # for OPL3 device (0x388) ??
options snd-opti93x snd_isapnp=0 snd_port=0x530 snd_fm_port=0x388 snd_mpu_port=0x330
snd_irq=10 snd_mpu_irq=9 snd_dma1=0 snd_dma2=1
# OSS/Free emulation modules
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
/etc/modules.conf-----------------
/etc/devfsd.conf-----------------
# ALSA stuff
#LOOKUP snd MODLOAD ACTION snd
#REGISTER sound/.* EXECUTE /sbin/pam_console_apply
#REGISTER snd/.* EXECUTE /sbin/pam_console_apply
# New
LOOKUP snd MODLOAD ACTION snd
REGISTER ^sound/.* PERMISSIONS root.audio 660
REGISTER ^snd/.* PERMISSIONS root.audio 660
/etc/devfsd.conf-----------------
Ok, this is what I have noticed (someone may already know these symptoms):
1. When I set the parameters via isapnp, the Alsa driver will change these.
This seems to happen wether or not the parameters are the same.
2. The parameters that are shown by a pnpdump are all the same for WSS/MSS
port number (0x534). ALSA driver snd-opt93x does not like this and generates
an error.I have to use a 0x530.
3. The OPL device is not activated if I use ioport 0x380. I can use 0x388
though.
2. I can only seem to load the modules if I:
a) do not activate the devices in the isapnp.conf files or
b) use the snd_isapnp=0 option
c) add "(CSN 1 (LD 0 ( REG 2 (POKE 4))))" to the isapnp.conf file
and configure the card directly.
Please note that, point b) occurs when I try to configure the card directly
(see http://www.woodyweb.ca/~woody/opti931.html)
Ok, now the interesting part. Once the driver is loaded I get the following
modules into the system:
lsmod ----------------------
Module Size Used by
snd-opti93x 13344 0
snd-pcm 60192 0 [snd-opti93x]
snd-opl3-lib 6864 0 [snd-opti93x]
snd-timer 11792 0 [snd-pcm snd-opl3-lib]
snd-hwdep 4528 0 [snd-opl3-lib]
snd-mpu401-uart 3600 0 [snd-opti93x]
snd-rawmidi 14144 0 [snd-mpu401-uart]
snd-seq-device 4352 0 [snd-opl3-lib snd-rawmidi]
snd 34848 0 [snd-opti93x snd-pcm snd-opl3-lib snd-timer
snd-hwdep snd-mpu401-uart snd-rawmidi snd-seq-device]
soundcore 4176 3 [snd]
....
lsmod ----------------------
A few interesting observations:
1.) Although I configured interrupts 9 & 10, only interrupt 9 is listed.
CPU0
0: 283776 XT-PIC timer
1: 13044 XT-PIC keyboard
2: 0 XT-PIC cascade
4: 16341 XT-PIC serial
8: 1 XT-PIC rtc
9: 0 XT-PIC MPU401 UART
13: 0 XT-PIC fpu
14: 16641 XT-PIC ide0
15: 1573 XT-PIC ide1
NMI: 0
ERR: 0
The count remains at 0 always.
2.) Attempts to play "au" or "midi" files generates this error (using aplay):
ALSA ../alsa-kernel/core/pcm_lib.c:1871: playback write error (DMA or IRQ trouble?)
ALSA ../alsa-kernel/core/pcm_native.c:1098: playback drain error (DMA or IRQ trouble?)
ALSA ../alsa-kernel/core/pcm_native.c:1098: playback drain error (DMA or IRQ trouble?)
...
The errors from aplay are:
laying raw data '/usr/share/sndconfig/sample.midi' : Unsigned 8 bit, Rate 8000 Hz, Mono
ALSA lib pcm_hw.c:407:(snd_pcm_hw_drain) SNDRV_PCM_IOCTL_DRAIN failed: Input/output
error
or
Playing Sparc Audio '/usr/share/sndconfig/sample.au' : Mu-Law, Rate 8000 Hz, Mono
aplay: pcm_write:968: write error: Input/output error
3.) Attempts to cat directly to the devices generates errors of
"file descriptor in bad state"
example "cat file > /proc/asound/dev/pcmC0D0p"
4.) When I unload the drivers using moprobe's -r option (with or without a
following rmmod -a), "cat /proc/ioports", "cat /proc/dma"
generates a segmentation fault.
The alsa driver generates the following errors:
ALSA ../../alsa-kernel/isa/opti9xx/opti92x-ad1848.c:1268: bad MAGIC (0x22)
ALSA ../alsa-kernel/core/device.c:65: device free failure
ALSA ../alsa-kernel/core/memory.c:74: Not freed snd_alloc_kmalloc = 100
ALSA ../alsa-kernel/core/memory.c:84: kmalloc(100) from c48644e7 not freed
5) Calling "alsamixer -c 0" always causes a core dump (Floating point exception)
6) Calling "amixer -c 0" always causes a core dump (Floating point exception)
7) Calling "amixer -c 0 contents" or "controls" seems to work
8) Attempts to change the mixer's values fails.
I would like to know what steps I may take to diagnose/debug this problems.
I think this is a question of the ISA configuration but I cannot seem to
find the corrcet parameters.
BTW, does anyone have the chip's datasheets. I cannot seem to get these from
Opti's site.
I have placed additional data at the end of this (already veruy long) e-mail
in case this is also needed.
TIA.
Hugo Ferreira
cat /proc/asound ------------------------
card0/
cards
dev/
devices
hwdep
meminfo
oss/
pcm
seq/
timers
version
cat /proc/asound/card0/midi -------------------
MPU-401 (UART)
Output 0
Tx bytes : 0
Input 0
Rx bytes : 0
cat /proc/asound/card0/pcm0c/info-----------------
card: 0
device: 0
subdevice: 0
stream: CAPTURE
id: OPTi 82C93X
name: 82C931
subname: subdevice #0
class: 0
subclass: 0
subdevices_count: 1
subdevices_avail: 1
cat /proc/asound/card0/pcm0c/info-----------------
card: 0
device: 0
subdevice: 0
stream: PLAYBACK
id: OPTi 82C93X
name: 82C931
subname: subdevice #0
class: 0
subclass: 0
subdevices_count: 1
subdevices_avail: 1
cat /proc/asound/devices -----------------
0: [0- 0]: ctl
4: [0- 0]: hardware dependent
8: [0- 0]: raw midi
16: [0- 0]: digital audio playback
24: [0- 0]: digital audio capture
33: : timer
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