audio accelerators.
Mixing is done in hardware by the ASSP, but is limited to 4 simultaneous
channels due to the restricted "minisrc" image that we are currently
working with.
Due to limitations in the audio subsystem, I'm currently attaching multiple
'audio' devices to 'esa', one for each voice. Because of this hack, the
default ESA_NUM_VOICES is 1.
http://mail-index.netbsd.org/tech-kern/2002/03/04/0005.html
auconv.c: Add conversion functions
audio.c: Sample alignment, calling conversion functions, etc.
audio_if.h: Add four hw_* members to "struct audio_params"
audiovar.h: Add conversion buffers, etc.
auich and uaudio: Add conversion request code to *_set_params().
- Change structures for each device to make them more suitable with
our scsipi mid-layer.
- Use ADAPTER_REQ_SET_XFER_MODE callback.
- Cleanup misc functions/structures/style.
XXX Tagged queuieng support is disabled for now.
XXX Maybe we should have common library of the scsi protocol engine
XXX to share it among all other drivers..
jumbo frames.
* Work around broken PXE firmware on some boards, which leave the ROM
BAR enabled even after the PXE stack has been unloaded.
* Set up the initial values for sc_tx_fill_thresh, sc_tx_drain_thresh, and
sc_rx_drain_thresh in sip_attach(), rather than in sip_init().
Distinguish between 2312 and 2300 cards (they *are* different). Enable
RIO (Reduced Interrupt Operation) for the LVD cards (hey- I've seen
batched completions of the 30 commands at a time with this,....)...
If we get a Port Logout on local loop topologies, we have to force the
f/w to log back in. The easiest way (for us) to do this is to force
a LIP. This also will wake up the disk that probably just had a f/w crash.
Implement mailbox 'continuations'- this allows interrupts to re-drive
a mailbox command if it's one that just essentially repeats the previous
mailbox command (e.g., f/w download). This saves a boatload of sleep/wakeup
twitches.
If we're not a 2300 and we're about to return with a 'bogus interrupt'- check
the semaphore register to be non-zero at all and outgoing mailbox 0- this
seems to be where some of the lost ISP1080 commands came from.
a byte-size quantity, the CacheLine Size configuration register specifies
the system cacheline size in units of 32-bit words; per PCI Local Bus
Specification, rev. 2.1, section 6.2.4.
jmcneill