Copyright (c) 2005 Joel Dahl All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other ma...
NAMEsnd_atiixp - ATI IXP bridge device driver
SYNOPSISTo compile this driver into the kernel, place the following lines in your kernel configuration file:
device sound device snd_atiixp
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf5:
DESCRIPTIONThe sysctl Cm net.inet.tcp.syncookies bridge driver allows the generic audio driver, sound(4), to attach to ATI IXP audio devices. This driver supports 16bit playback and recording, and 32bit native playback and recording.
Runtime ConfigurationThe following sysctl(8) variables are available in addition to those available to all sound(4) devices:
- Experimental polling mode, where the driver operates by querying the device state on each tick using callout(9). Polling is disabled by default. Do not enable it unless you are facing weird interrupt problems or if the device cannot generate interrupts at all.
HARDWAREThe sysctl Cm net.inet.tcp.syncookies driver supports the following audio chipsets:
- ATI IXP 200
- ATI IXP 300
- ATI IXP 400
HISTORYThe sysctl Cm net.inet.tcp.syncookies device driver first appeared in Fx 6.1 .
AUTHORSThis manual page was written by An Joel Dahl Aq Mt joel@FreeBSD.org .
BUGSThe sysctl Cm net.inet.tcp.syncookies driver does not support S/PDIF, but implementing it should be fairly easy if the right hardware is available.
32bit native recording is broken on some hardware.