the original ad-audiomp branch notes:
Add MP locking to the audio drivers.
Making the audio drivers MP safe is necessary before efforts
can be made to make the VM system MP safe.
The are two locks per device instance, an ISR lock and
a character device lock. The ISR lock replaces calls to
splaudio()/splx(), and will be held across calls to device
methods which were called at splaudio() before (e.g.
trigger_output). The character device lock is held across
calls to nearly all of the methods, excluding some only
used for initialization, e.g. get_locks.
Welcome to 5.99.57.
- Change the attimer <-> pcppi communication using device_t so that
pcppi(4) doesn't have to know about the contents of struct attimer_softc.
XXX pcppi's childdet function is completely wrong. This has to be
XXX revisited later.
pcppi_attach(), which now accepts "struct pcppi_softc";
Split ISA specific bits from pcppi_attach() into pcppi_isa_attach()
(needed by the upcoming pcppi(4) ACPI attachment).
Reviewed by christos@.
a call to hook up a bell-ringer (since the keyboard itself has no bell).
This eliminates the need for #ifdefs for the bell-ringer in the pckbd
driver.
- Add cnbell() support to pckbd.
