AWE 64 and DMA Buffer Size

AWE 64 and DMA Buffer Size

Post by Randy Robinso » Sat, 26 Sep 1998 04:00:00



     Can someone please take a look at this and let me know where my
problem is.
I am a "semi-newbie" and after hacking for a few weeks I have HP
printer,
PNP modem, etc. all working, all except SB AWE 64 Value.  I have
refrained
from the usual stupid posts that seem to always recieve a spiteful
'read the
READMES' response.  But I could really use some help here.
    Problem-compiled kernel using awe-drv patch but AWE32 drivers are
not
loaded.  Trying to do a simple test as cat sound > /dev/audio results in
something
like "DMA buffer out of memory" I believe the AWE 64 Value has 512k of
RAM,
which was the value I origanally used during config. I  tried other
values as well
but no luck.  Am I headed down the correct path??
Any help is GREATLY appreciated.  Here is relevant info (maybe)
Many Thanks in advance

******************************************************************
relevant isapnp.conf info
******************************************************************

# Card 2: (serial identifier a9 16 bd de 30 e4 00 8c 0e)
# Vendor Id CTL00e4, Serial Number 381541936, checksum 0xA9.
#     Version 1.0, Vendor version 1.0
#     ANSI string -->Creative SB AWE64  PnP<--
#     Vendor defined tag:  73 02 45 20
#
# Logical device id CTL0045


#
(CONFIGURE CTL00e4/381541936 (LD 1
#     ANSI string -->Audio<--

 (INT 0 (IRQ 5 (MODE +E)))

 (DMA 0 (CHANNEL 1))
 (DMA 1 (CHANNEL 5))
 (IO 0 (BASE 0x0220))
 (IO 1 (BASE 0x0330))
 (IO 2 (BASE 0x0388))
 (ACT Y)
))

# Logical device id CTL7002



#
# Edit the entries below to uncomment out the configuration required.
# Note that only the first value of any range is given, this may be
changed if required
# Don't forget to uncomment the activate (ACT Y) when happy

(CONFIGURE CTL00e4/381541936 (LD 2
#     Compatible device id PNPb02f
#     ANSI string -->Game<--
 (IO 0 (BASE 0x0200))
# (IO 0 (BASE 0x0200))
#     End dependent functions
 (ACT Y)
))

# Logical device id CTL0022


(CONFIGURE CTL00e4/381541936 (LD 3
#     ANSI string -->WaveTable<--

(IO 0 (BASE 0x0620))
(IO 1 (BASE 0x0A20))
(IO 2 (BASE 0x0E20))

#     Vendor defined tag:  75 01 69 46 35 55
 (ACT Y)
))
# End tag... Checksum 0x00 (OK)

# Returns all cards to the "Wait for Key" state
(WAITFORKEY)

*****************************************************************
here's copy of initialization script
*****************************************************************

#!/bin/sh
#
# /etc/rc.d/rc.local:  Local system initialization script.
#
# Put any local setup commands in here:
isapnp /etc/isapnp.conf
setserial /dev/ttyS0 irq 4 autoconfig
setserial /dev/ttyS0 spd_vhi
setserial /dev/ttyS0
modprobe -r sound
modprobe -a sound trace_init=1

*****************************************************************
here's  cat /dev/sndstat.... No AWE 32 driver  enabled
*****************************************************************

Sound Driver:3.5.4-960630 (Thu Sep 24 23:15:23 CDT 1998 root,
Linux Blackhole 2.0.34 #26 Thu Sep 24 21:59:20 CDT 1998 i586 unknown)
Kernel: Linux Blackhole 2.0.34 #29 Thu Sep 24 23:29:17 CDT 1998 i586
Config options: 0

Installed drivers:
Type 1: OPL-2/OPL-3 FM
Type 2: Sound Blaster
Type 7: SB MPU-401

Card config:
Sound Blaster at 0x220 irq 5 drq 1,5
SB MPU-401 at 0x330 irq 5 drq 0
OPL-2/OPL-3 FM at 0x388 drq 0

Audio devices:
0: Sound Blaster 16 (4.16)

Synth devices:
0: Yamaha OPL-3

Midi devices:
0: Sound Blaster 16

Timers:
0: System clock

Mixers:
0: Sound Blaster

 
 
 

1. UDP receive buffer size > 64 K ?

Hi,

There seems to be a limit on the size of the UDP receive buffer under
Linux (RH 5.2, stock kernel 2.0.36). The default is 64 K, and I'm
unable to set it to a higher value. (But I can reduce the value...)

Is there a way to get a 256 KB UDP receive buffer, by applying a patch,
of maybe upgrading to kernel 2.2?

Thanks

--
Attik System
Philippe Lang
Switzerland
http://www.attiksystem.ch

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