The driver backend is capable of supporting also ISA cards (no DMA)
and primary rate (PRI) cards in addition to the basic rate ones,
but I don't any to test on right now, so we don't support those
currently.
This code was originally written by Juha-Matti Liukkonen <jml@cubical.fi>
of Cubical Solutions Ltd. for FreeBSD, and was ported to NetBSD by
myself for the same company.
CCB is returned to the caller.
- Make code paths that can use twe_ccb_alloc_wait() use it, and assert
that a CCB is always returned from that function.
- Assert that a CCB is always returned when allocating the reserved CCB
for an AEN fetch.
reserved CCB. This means that all remaining callers of twe_param_get*()
are called from a valid thread context, and thus have no need to use a
reserved CCB. This will allow for further cleanup in a future commit.
1) Don't wait for DRQ on an IDENTIFY command -- if it's not set when we see
BSY clear, abort the command and ignore the drive. (Do this by testing
for DRQ in the read/write cases in __wdccommand_intr().)
2) Don't wait for DRQ to deassert when we finish an IDENTIFY (or any other
non-block command that reads data) -- we don't do this for block I/O, and
empirically it doesn't clear on my CF cards at all, causing a pointless 1s
delay.
3) Add comments to some of the delay()s, and add missing ones in wdcreset()
and the WDCC_RECAL in the so-called "pre-ATA" probe.
4) Slightly simplify the reset sequence -- we were doing an extra I/O.
5) Modify the register writability test to make sure that registers are not
overlapped -- this can happen in some weird cases with a missing device 1.
6) Check the error register value after the reset -- if it's not 01h or 81h,
as appropriate (see ATA spec), punt.
Tested with a number of ATA-only, ATAPI-only, mixed ATA-ATAPI, CF, and IDE
disk configurations.
Also remove the SINGLE_DRIVE nonsense again.
- Make AENs use the generic code table stuff.
- Add a few more AEN codes (from FreeBSD).
- Correct the context of a few AEN codes (some were listed as
"unit context" when they're really "port context").
- Add a queue of AENs that management tools in userspace can poll
(from FreeBSD).
* introduce fsetown(), fgetown(), fownsignal() - this sets/retrieves/signals
the owner of descriptor, according to appropriate sematics
of TIOCSPGRP/FIOSETOWN/SIOCSPGRP/TIOCGPGRP/FIOGETOWN/SIOCGPGRP ioctl; use
these routines instead of custom code where appropriate
* make every place handling TIOCSPGRP/TIOCGPGRP handle also FIOSETOWN/FIOGETOWN
properly, and remove the translation of FIO[SG]OWN to TIOC[SG]PGRP
in sys_ioctl() & sys_fcntl()
* also remove the socket-specific hack in sys_ioctl()/sys_fcntl() and
pass the ioctls down to soo_ioctl() as any other ioctl
change discussed on tech-kern@
of struct wsdisplay_softc. Unused entries are NULL, and there were
a lot of places where we did not checked that the caller did not
requested an operation on a NULL entry.
While we are there, one bit of KNFification, and make return code more
consistent by always returning the same code (EINVAL) when a screen
number higer than the maximum is requested.
