* Add IPL_HIGH. Alias IPL_HIGH to IPL_RTTY
* Define splrtty (used by the scn driver).
* Add iv_level and iv_mask to struct iv. These define the IPL at
which the handler should run.
* intr_establish now takes *two* ipls. One at which the handler should run,
and one in which the interrupt should get blocked.
* Define SCN_RING_HIWAT and add sc_rbhiwat to scn_softc. When the
ringbuffer gets full up to this mark, rts gets asserted (Ian Dall).
* Add sc_rx_blocked to scn_softc. This is used to tell scnsoft that
rxinterrupts are blocked (Ian Dall).
* intr_establish now takes *two* ipls. One at which the handler should run,
and one in which the interrupt should get blocked.
All the following changes were provided by Ian Dall:
* Remove SCN_HSOFT. Now that the pc532's software interrupt system is running
from int14, this won't work anymore.
* Add code to detect uart type (SCN2681, SCC2692 or SCC26C92).
* Cleanup my RECOVER mess. Thank's to Ian Dall for reading the datasheet
and removing all the unnecessary RECOVERs.
* Cleanup scnrxintr.
* Implement scnhiwflow.
* Do not use automatic RTS. This and scnhiflow and some changes to the
interrupt system suggested by Ian fix the scn overrun problem at 57600
baud.
* intr_establish now takes *two* ipls. One at which the handler should run,
and one in which the interrupt should get blocked.
* Make transfersize configurable for input and output. Default the input
transfersize to 128 bytes. That way interrupts won't be disabled for more
then about 128us-256us for slow targets. This is necessary to prevent scn
fifo overruns. Cleanup the pdma code. Thank's to Ian Dall for these
changes.
* Make it work on 30mhz machines.
* Configure MSDOSFS, CD9660, KERNFS, NFSCLIENT and INET.
* Configure SCSI-cds, slip and ppp.
* Update for mi ramdisk driver.
* Initialize iv_level for all interrupts.
* Protect the call to the sir-handler with splraise.
* intr_establish now takes *two* ipls. One at which the handler should run,
and one in which the interrupt should get blocked.
* Compute iv_mask for all interrupts in intr_establish.
'const char *', and 'void *', respectively. The second arg is taken directly
from user arguments, and is const there, so must be const in the prototypes
and functions. The third arg is also taken directly from user arguments.
It doesn't have to be changed, but since it's cleaner to keep the type
the same as the user arg's type, and I'm already making the 'const char *'
change...
* Fix arguments to various copyin()/copyout() invocations, to avoid
gratuitous casts.
* Some KNF formatting fixes
* Change sockargs()'s second argument to be a const void *, to help
with dealing with the syscall argument type fixups/const poisoning.
to be a caddr_t, but since it's being passed constant user argument pointers
it needs to be const, and since it's being passed a variety of argument
pointer types it makes sense to change it to void *. That argument is
simply being handed to copyin().
'const char *', and 'void *', respectively. The second arg is taken directly
from user arguments, and is const there, so must be const in the prototypes
and functions. The third arg is also taken directly from user arguments.
It doesn't have to be changed, but since it's cleaner to keep the type
the same as the user arg's type, and I'm already making the 'const char *'
change...
