"oversize frame." Also, some an(4) instances (esp. w/ firmware
version 5+) would not reliably interoperate with some Cisco APs.
Add a sysctl for enabling/disabling debugging.
The problem with Aironet AP interoperability was that the rx frame
'gap' will sometimes be loaded with the 802.2 SNAP header, and
sometimes omitted, when connected to a Cisco AP; an(4) was *always*
discarding the gap. The problem with "oversize frames" was an
off-by-2 error in the frame-length arithmetic.
While we're here, pad some RIDs to the length that new firmware
really expects.
Thanks to Jim Miller for his valuable bug reports and testing, and
to Dheeraj Reddy for RID-length patches. Some clues from various
Linux drivers for Cisco/Aironet cards led to the gap fix.
desc->dagList is set to NULL before continuing. If we don't,
there's a danger that we'll try to re-free these items later.
(This should fix a panic reported to me via private communciation.)
style fixes
* Don't associate a name with the types
* The function type must be declared on a line by itself
preceding the function.
* DO NOT initialize variables in the declarations.
* No parentheses are needed around the return value.
IXP-200 and family motherboard chips. Its functional for both recording and
playback.
Note that quadraphonic and Dolby 5.1 audio are not tested by me but ought
to work fine. I can set the number of channels etc. OK but i can't listen
to the result. Any feedback on this performance would be greatly
apreciated.
audio framework
Summary of changes:
* struct audio_params
- remove sw_code, factor, factor_denom, hw_sample_rate,
hw_encoding ,hw_precision, and hw_channels. Conversion information
is conveyed by stream_filter_list_t.
- change the type of sample_rate: u_long -> u_int
- add `validbits,' which represents the valid data size in
precision bits. It is required in order to distinguish 24/32bit
from 24/24bit or 32/32bit.
* audio_hw_if
- add two parameters to set_params()
stream_filter_list_t *pfil, stream_filter_list *rfil
A HW driver should set filter recipes for requested formats
- constify audio_params parameters of trigger_output() and
trigger_input(). They represent audio formats for the hardware.
- make open() and close() optional
- add int (AUMODE_PLAY or AUMODE_RECORD) and audio_params_t parameters
to round_blocksize()
* sw_code is replaced with stream_filter_t.
stream_filer_t converts audio data in an input buffer and writes
into another output buffer unlike sw_code, which converts data in
single buffer.
converters in dev/auconv.c, dev/mulaw.c, dev/aurateconv.c,
dev/tc/bba.c, dev/ic/msm6258.c, and arch/arm/iomd/vidcaudio.c are
reimplemented as stream_filter_t
* MI audio
- audiosetinfo() builds filter pipelines from stream_filter_list_t
filled by audio_hw_if::set_params()
- audiosetinfo() returns with EINVAL if mmapped and set_params()
requests filters
- audio_write(), audio_pint(), and audio_rint() invoke a filter
pipeline.
- ioctl() for FIONREAD, AUDIO_WSEEK, AUDIO_GETIOFFS,
AUDIO_GETOOFFS, and audio_prinfo::{seek,samples} for
AUDIO_GETINFO handle values for a buffer nearest to userland.
* add `struct device *' parameter to ac97_attach()
* all of audio HW drivers follow audio_hw_if and ac97 changes
changes the "tickle" model of wdogctl(8), it was modified as well;
while I was in there, I cleaned up the argument parsing.
The code was reviewed by simonb@.
kent