UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some
minor portions derived from the old Mach code. i provided some help
getting swap and paging working, and other bug fixes/ideas. chuck
silvers <chuq@chuq.com> also provided some other fixes.
this is the sparc portion.
this will be KNF'd shortly. :-)
a char *, because that's what was really intended, and because
if the print function modifies the string, various things could become
unhappy (so the string should _not_ be modified).
- split softc size and match/attach out from cfdriver into
a new struct cfattach.
- new "attach" directive for files.*. May specify the name of
the cfattach structure, so that devices may be easily attached
to parents with different autoconfiguration semantics.
rather than SEEKCOMPLETE before retrying the operation. If implied seeks
are being used, the state is set to DOIO (no change). This is why I
couldn't reproduce the disk_unbusy() panic on my SS2; it uses implied
seeks. Patch from John F. Woods <jfw@jfwhome.funhouse.com>
- Better disklabel handling. While a disklabel isn't used
in the driver, some versions of the OpenPROM insist on
one being present in order to boot from floppy. These
changes provide a default label (in a way similar to how
the SCSI disk driver provides a default) so that a user
can more easily place the label on the disk.
- Fix semi-bug in bootpath handling. It appears as if the
bootpath can appear in a couple of formats: "/fd@0,0", which
is what bootpath_fake() creates on v0 proms and may be
passed by some v2 proms, and "/fd0" which is what the
v2 prom on my SS2 passes. We now handle both formats.
- Use a mountroot hook to eject the floppy and wait for
the user to insert a filesystem floppy if we're the boot/root
device.
- New metrics handling. Metrics are now kept in the new
`struct disk'. Busy time is now stored as a timeval, and
transfer count in bytes.
- Storage for disklabels is now dynamically allocated, so that
the size of the disk structure is not machine-dependent.
- Several new functions for attaching and detaching disks, and
handling metrics calculation.
Old-style instrumentation is still supported in drivers that did it before.
However, old-style instrumentation is being deprecated, and will go away
once the userland utilities are updated for the new framework.
For usage and architectural details, see the forthcoming disk(9) manual
page.
pk