Fixed problems:
LS120/ZIP drives still currupted data.
Reworked once again, buffered I/O is just ignoring any sizehints
it is given :(
Now the atapifd driver splits up requests for devices that has
limitted transfer size.
ISA only configs fails on boot with interrupt timeouts.
The new-bus integration introduced a bug where the softc ptr
was lost during the probe.
Some minor cleanups and rearrangements as well.
As usual USE AT YOUR OWN RISK!!, this is still pre alpha level code.
Especially the DMA support can hose your disk real bad if anything
goes wrong, again you have been warned :)
Notebook owners should be carefull that their machines dont suspend
as this might cause trouble...
But please tell me how it works for you!
Enjoy!
Added "options ATA_STATIC_ID" that wires ATA disks like the old wd driver.
Fixed problems:
Dont use more sectors/intr than the drive supports.
Fix announce of > 8.4G disks.
Dont call ad_interrupt/ad_transfer when no disks config'd.
Use the right page# for CDR write mode params.
Fix breakage when no PCI support in kernel.
Implement DEVFS stuff.
General code clenaup.
